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6de9cd9a | 1 | /* Declaration statement matcher |
85ec4feb | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
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 | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
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. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
2adfab87 AM |
24 | #include "options.h" |
25 | #include "tree.h" | |
6de9cd9a | 26 | #include "gfortran.h" |
2adfab87 | 27 | #include "stringpool.h" |
6de9cd9a DN |
28 | #include "match.h" |
29 | #include "parse.h" | |
b7e75771 | 30 | #include "constructor.h" |
ca39e6f2 FXC |
31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
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) | |
ca39e6f2 FXC |
37 | |
38 | ||
524af0d6 | 39 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
40 | |
41 | ||
2054fc29 | 42 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
46fa431d | 47 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
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; | |
6f855a26 | 57 | static int attr_seen; |
6de9cd9a | 58 | |
a8b3b0b6 | 59 | /* The current binding label (if any). */ |
9975a30b | 60 | static const char* curr_binding_label; |
a8b3b0b6 CR |
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 | ||
25d8f0a2 TS |
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 | ||
6de9cd9a DN |
92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
1c8bcdf7 | 96 | bool gfc_matching_function; |
e2d29968 | 97 | |
170a8bd6 EB |
98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
5bab4c96 PT |
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 | ||
294fbfc8 TS |
110 | /********************* DATA statement subroutines *********************/ |
111 | ||
2220652d PT |
112 | static bool in_match_data = false; |
113 | ||
114 | bool | |
115 | gfc_in_match_data (void) | |
116 | { | |
117 | return in_match_data; | |
118 | } | |
119 | ||
ca39e6f2 FXC |
120 | static void |
121 | set_in_match_data (bool set_value) | |
2220652d PT |
122 | { |
123 | in_match_data = set_value; | |
124 | } | |
125 | ||
294fbfc8 TS |
126 | /* Free a gfc_data_variable structure and everything beneath it. */ |
127 | ||
128 | static void | |
636dff67 | 129 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
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); | |
cede9502 | 139 | free (p); |
294fbfc8 TS |
140 | } |
141 | } | |
142 | ||
143 | ||
144 | /* Free a gfc_data_value structure and everything beneath it. */ | |
145 | ||
146 | static void | |
636dff67 | 147 | free_value (gfc_data_value *p) |
294fbfc8 TS |
148 | { |
149 | gfc_data_value *q; | |
150 | ||
151 | for (; p; p = q) | |
152 | { | |
153 | q = p->next; | |
c9d75a48 | 154 | mpz_clear (p->repeat); |
294fbfc8 | 155 | gfc_free_expr (p->expr); |
cede9502 | 156 | free (p); |
294fbfc8 TS |
157 | } |
158 | } | |
159 | ||
160 | ||
161 | /* Free a list of gfc_data structures. */ | |
162 | ||
163 | void | |
636dff67 | 164 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
165 | { |
166 | gfc_data *q; | |
167 | ||
168 | for (; p; p = q) | |
169 | { | |
170 | q = p->next; | |
294fbfc8 TS |
171 | free_variable (p->var); |
172 | free_value (p->value); | |
cede9502 | 173 | free (p); |
294fbfc8 TS |
174 | } |
175 | } | |
176 | ||
177 | ||
a9f6f1f2 | 178 | /* Free all data in a namespace. */ |
636dff67 | 179 | |
a9f6f1f2 | 180 | static void |
66e4ab31 | 181 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
182 | { |
183 | gfc_data *d; | |
184 | ||
185 | for (;ns->data;) | |
186 | { | |
187 | d = ns->data->next; | |
cede9502 | 188 | free (ns->data); |
a9f6f1f2 JD |
189 | ns->data = d; |
190 | } | |
191 | } | |
192 | ||
d5e2274d SB |
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 | } | |
a9f6f1f2 | 207 | |
294fbfc8 TS |
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 | |
636dff67 | 214 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
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 | |
7b901ac4 | 267 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
268 | { |
269 | match m; | |
270 | gfc_symbol *sym; | |
271 | ||
7b901ac4 | 272 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
273 | |
274 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 275 | return var_list (new_var); |
294fbfc8 | 276 | |
7b901ac4 | 277 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
278 | if (m != MATCH_YES) |
279 | return m; | |
280 | ||
7b901ac4 | 281 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 282 | |
f37e928c | 283 | /* Symbol should already have an associated type. */ |
524af0d6 | 284 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
285 | return MATCH_ERROR; |
286 | ||
636dff67 SK |
287 | if (!sym->attr.function && gfc_current_ns->parent |
288 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 289 | { |
c4100eae | 290 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 291 | "statement at %C", sym->name); |
294fbfc8 TS |
292 | return MATCH_ERROR; |
293 | } | |
294 | ||
4075a94e | 295 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 296 | && sym->attr.in_common |
524af0d6 | 297 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 298 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 299 | sym->name)) |
4075a94e | 300 | return MATCH_ERROR; |
294fbfc8 | 301 | |
524af0d6 | 302 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
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 | |
636dff67 | 312 | top_var_list (gfc_data *d) |
294fbfc8 | 313 | { |
7b901ac4 | 314 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
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 | ||
7b901ac4 KG |
327 | new_var = gfc_get_data_variable (); |
328 | *new_var = var; | |
294fbfc8 TS |
329 | |
330 | if (tail == NULL) | |
7b901ac4 | 331 | d->var = new_var; |
294fbfc8 | 332 | else |
7b901ac4 | 333 | tail->next = new_var; |
294fbfc8 | 334 | |
7b901ac4 | 335 | tail = new_var; |
294fbfc8 TS |
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); | |
a9f6f1f2 | 347 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
348 | return MATCH_ERROR; |
349 | } | |
350 | ||
351 | ||
352 | static match | |
636dff67 | 353 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
354 | { |
355 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 356 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
357 | gfc_expr *expr; |
358 | match m; | |
36d3fb4c | 359 | locus old_loc; |
294fbfc8 TS |
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 | ||
36d3fb4c PT |
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 | { | |
524af0d6 | 385 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
386 | m = MATCH_ERROR; |
387 | return m; | |
388 | } | |
46f4f794 TB |
389 | else if (m == MATCH_YES) |
390 | gfc_free_expr (*result); | |
36d3fb4c PT |
391 | |
392 | gfc_current_locus = old_loc; | |
393 | ||
294fbfc8 TS |
394 | m = gfc_match_name (name); |
395 | if (m != MATCH_YES) | |
396 | return m; | |
397 | ||
398 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
399 | return MATCH_ERROR; | |
400 | ||
c3f34952 TB |
401 | if (sym && sym->attr.generic) |
402 | dt_sym = gfc_find_dt_in_generic (sym); | |
403 | ||
294fbfc8 | 404 | if (sym == NULL |
c3f34952 | 405 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 406 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 407 | { |
c4100eae | 408 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 409 | name); |
89f1f37e | 410 | *result = NULL; |
294fbfc8 TS |
411 | return MATCH_ERROR; |
412 | } | |
f6288c24 | 413 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 414 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 415 | |
d46e0870 JD |
416 | /* Check to see if the value is an initialization array expression. */ |
417 | if (sym->value->expr_type == EXPR_ARRAY) | |
418 | { | |
419 | gfc_current_locus = old_loc; | |
420 | ||
421 | m = gfc_match_init_expr (result); | |
422 | if (m == MATCH_ERROR) | |
423 | return m; | |
424 | ||
425 | if (m == MATCH_YES) | |
426 | { | |
524af0d6 | 427 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
428 | m = MATCH_ERROR; |
429 | ||
430 | if ((*result)->expr_type == EXPR_CONSTANT) | |
431 | return m; | |
432 | else | |
433 | { | |
434 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
435 | return MATCH_ERROR; | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
294fbfc8 TS |
440 | *result = gfc_copy_expr (sym->value); |
441 | return MATCH_YES; | |
442 | } | |
443 | ||
444 | ||
445 | /* Match a list of values in a DATA statement. The leading '/' has | |
446 | already been seen at this point. */ | |
447 | ||
448 | static match | |
636dff67 | 449 | top_val_list (gfc_data *data) |
294fbfc8 | 450 | { |
7b901ac4 | 451 | gfc_data_value *new_val, *tail; |
294fbfc8 | 452 | gfc_expr *expr; |
294fbfc8 TS |
453 | match m; |
454 | ||
455 | tail = NULL; | |
456 | ||
457 | for (;;) | |
458 | { | |
459 | m = match_data_constant (&expr); | |
460 | if (m == MATCH_NO) | |
461 | goto syntax; | |
462 | if (m == MATCH_ERROR) | |
463 | return MATCH_ERROR; | |
464 | ||
7b901ac4 KG |
465 | new_val = gfc_get_data_value (); |
466 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
467 | |
468 | if (tail == NULL) | |
7b901ac4 | 469 | data->value = new_val; |
294fbfc8 | 470 | else |
7b901ac4 | 471 | tail->next = new_val; |
294fbfc8 | 472 | |
7b901ac4 | 473 | tail = new_val; |
294fbfc8 TS |
474 | |
475 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
476 | { | |
477 | tail->expr = expr; | |
f2112868 | 478 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
479 | } |
480 | else | |
481 | { | |
46f4f794 | 482 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 483 | gfc_free_expr (expr); |
294fbfc8 TS |
484 | |
485 | m = match_data_constant (&tail->expr); | |
486 | if (m == MATCH_NO) | |
487 | goto syntax; | |
488 | if (m == MATCH_ERROR) | |
489 | return MATCH_ERROR; | |
490 | } | |
491 | ||
492 | if (gfc_match_char ('/') == MATCH_YES) | |
493 | break; | |
494 | if (gfc_match_char (',') == MATCH_NO) | |
495 | goto syntax; | |
496 | } | |
497 | ||
498 | return MATCH_YES; | |
499 | ||
500 | syntax: | |
501 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 502 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
503 | return MATCH_ERROR; |
504 | } | |
505 | ||
506 | ||
507 | /* Matches an old style initialization. */ | |
508 | ||
509 | static match | |
510 | match_old_style_init (const char *name) | |
511 | { | |
512 | match m; | |
513 | gfc_symtree *st; | |
ed0e3607 | 514 | gfc_symbol *sym; |
294fbfc8 TS |
515 | gfc_data *newdata; |
516 | ||
517 | /* Set up data structure to hold initializers. */ | |
518 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
519 | sym = st->n.sym; |
520 | ||
294fbfc8 TS |
521 | newdata = gfc_get_data (); |
522 | newdata->var = gfc_get_data_variable (); | |
523 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 524 | newdata->where = gfc_current_locus; |
294fbfc8 | 525 | |
66e4ab31 | 526 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
527 | m = top_val_list (newdata); |
528 | if (m != MATCH_YES) | |
529 | { | |
cede9502 | 530 | free (newdata); |
294fbfc8 TS |
531 | return m; |
532 | } | |
533 | ||
534 | if (gfc_pure (NULL)) | |
535 | { | |
536 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 537 | free (newdata); |
294fbfc8 TS |
538 | return MATCH_ERROR; |
539 | } | |
ccd7751b | 540 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 541 | |
ed0e3607 | 542 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 543 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 544 | { |
cede9502 | 545 | free (newdata); |
ed0e3607 AL |
546 | return MATCH_ERROR; |
547 | } | |
548 | ||
294fbfc8 TS |
549 | /* Chain in namespace list of DATA initializers. */ |
550 | newdata->next = gfc_current_ns->data; | |
551 | gfc_current_ns->data = newdata; | |
552 | ||
553 | return m; | |
554 | } | |
555 | ||
636dff67 | 556 | |
294fbfc8 | 557 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 558 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 559 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 560 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
561 | |
562 | match | |
563 | gfc_match_data (void) | |
564 | { | |
7b901ac4 | 565 | gfc_data *new_data; |
294fbfc8 TS |
566 | match m; |
567 | ||
5f0ba745 SK |
568 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
569 | if ((gfc_current_state () == COMP_FUNCTION | |
570 | || gfc_current_state () == COMP_SUBROUTINE) | |
571 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
572 | { | |
573 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
574 | return MATCH_ERROR; | |
575 | } | |
576 | ||
ca39e6f2 | 577 | set_in_match_data (true); |
2220652d | 578 | |
294fbfc8 TS |
579 | for (;;) |
580 | { | |
7b901ac4 KG |
581 | new_data = gfc_get_data (); |
582 | new_data->where = gfc_current_locus; | |
294fbfc8 | 583 | |
7b901ac4 | 584 | m = top_var_list (new_data); |
294fbfc8 TS |
585 | if (m != MATCH_YES) |
586 | goto cleanup; | |
587 | ||
c034c38f SK |
588 | if (new_data->var->iter.var |
589 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
590 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
591 | && new_data->var->list | |
592 | && new_data->var->list->expr | |
593 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
594 | && new_data->var->list->expr->ref | |
595 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
596 | { | |
597 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
598 | "statement", &new_data->var->list->expr->where); | |
599 | goto cleanup; | |
600 | } | |
601 | ||
7b901ac4 | 602 | m = top_val_list (new_data); |
294fbfc8 TS |
603 | if (m != MATCH_YES) |
604 | goto cleanup; | |
605 | ||
7b901ac4 KG |
606 | new_data->next = gfc_current_ns->data; |
607 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
608 | |
609 | if (gfc_match_eos () == MATCH_YES) | |
610 | break; | |
611 | ||
612 | gfc_match_char (','); /* Optional comma */ | |
613 | } | |
614 | ||
ca39e6f2 | 615 | set_in_match_data (false); |
2220652d | 616 | |
294fbfc8 TS |
617 | if (gfc_pure (NULL)) |
618 | { | |
619 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
620 | return MATCH_ERROR; | |
621 | } | |
ccd7751b | 622 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 623 | |
294fbfc8 TS |
624 | return MATCH_YES; |
625 | ||
626 | cleanup: | |
ca39e6f2 | 627 | set_in_match_data (false); |
7b901ac4 | 628 | gfc_free_data (new_data); |
294fbfc8 TS |
629 | return MATCH_ERROR; |
630 | } | |
631 | ||
632 | ||
633 | /************************ Declaration statements *********************/ | |
634 | ||
d3a9eea2 | 635 | |
f6288c24 FR |
636 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
637 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 638 | and is surrounded by '/'. |
f6288c24 FR |
639 | The typespec ts must match the typespec of the variable which the |
640 | clist is initializing. | |
6442a6f4 | 641 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
642 | corresponding to array elements or a scalar (as == NULL). */ |
643 | ||
644 | static match | |
645 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
646 | { | |
647 | gfc_constructor_base array_head = NULL; | |
648 | gfc_expr *expr = NULL; | |
649 | match m; | |
650 | locus where; | |
9b24c104 | 651 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
652 | bool scalar; |
653 | int cmp; | |
654 | ||
655 | gcc_assert (ts); | |
656 | ||
657 | mpz_init_set_ui (repeat, 0); | |
f6288c24 FR |
658 | scalar = !as || !as->rank; |
659 | ||
660 | /* We have already matched '/' - now look for a constant list, as with | |
661 | top_val_list from decl.c, but append the result to an array. */ | |
662 | if (gfc_match ("/") == MATCH_YES) | |
663 | { | |
664 | gfc_error ("Empty old style initializer list at %C"); | |
665 | goto cleanup; | |
666 | } | |
667 | ||
668 | where = gfc_current_locus; | |
669 | for (;;) | |
670 | { | |
671 | m = match_data_constant (&expr); | |
672 | if (m != MATCH_YES) | |
673 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
674 | if (m == MATCH_NO) | |
675 | goto syntax; | |
676 | if (m == MATCH_ERROR) | |
677 | goto cleanup; | |
678 | ||
679 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
680 | if ( gfc_match_char ('*') == MATCH_YES) | |
681 | { | |
682 | if (scalar) | |
683 | { | |
684 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
685 | goto cleanup; | |
686 | } | |
687 | if (expr->ts.type != BT_INTEGER) | |
688 | { | |
689 | gfc_error ("Repeat spec must be an integer at %C"); | |
690 | goto cleanup; | |
691 | } | |
692 | mpz_set (repeat, expr->value.integer); | |
693 | gfc_free_expr (expr); | |
694 | expr = NULL; | |
695 | ||
696 | m = match_data_constant (&expr); | |
697 | if (m == MATCH_NO) | |
698 | gfc_error ("Expected data constant after repeat spec at %C"); | |
699 | if (m != MATCH_YES) | |
700 | goto cleanup; | |
701 | } | |
702 | /* No repeat spec, we matched the data constant itself. */ | |
703 | else | |
704 | mpz_set_ui (repeat, 1); | |
705 | ||
706 | if (!scalar) | |
707 | { | |
708 | /* Add the constant initializer as many times as repeated. */ | |
709 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
710 | { | |
711 | /* Make sure types of elements match */ | |
712 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
713 | && !gfc_convert_type (expr, ts, 1)) | |
714 | goto cleanup; | |
715 | ||
716 | gfc_constructor_append_expr (&array_head, | |
717 | gfc_copy_expr (expr), &gfc_current_locus); | |
718 | } | |
719 | ||
720 | gfc_free_expr (expr); | |
721 | expr = NULL; | |
722 | } | |
723 | ||
724 | /* For scalar initializers quit after one element. */ | |
725 | else | |
726 | { | |
727 | if(gfc_match_char ('/') != MATCH_YES) | |
728 | { | |
729 | gfc_error ("End of scalar initializer expected at %C"); | |
730 | goto cleanup; | |
731 | } | |
732 | break; | |
733 | } | |
734 | ||
735 | if (gfc_match_char ('/') == MATCH_YES) | |
736 | break; | |
737 | if (gfc_match_char (',') == MATCH_NO) | |
738 | goto syntax; | |
739 | } | |
740 | ||
741 | /* Set up expr as an array constructor. */ | |
742 | if (!scalar) | |
743 | { | |
744 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
745 | expr->ts = *ts; | |
746 | expr->value.constructor = array_head; | |
747 | ||
748 | expr->rank = as->rank; | |
749 | expr->shape = gfc_get_shape (expr->rank); | |
750 | ||
9b24c104 FR |
751 | /* Validate sizes. We built expr ourselves, so cons_size will be |
752 | constant (we fail above for non-constant expressions). | |
753 | We still need to verify that the array-spec has constant size. */ | |
754 | cmp = 0; | |
755 | gcc_assert (gfc_array_size (expr, &cons_size)); | |
756 | if (!spec_size (as, &as_size)) | |
757 | { | |
758 | gfc_error ("Expected constant array-spec in initializer list at %L", | |
759 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
760 | cmp = -1; | |
761 | } | |
762 | else | |
763 | { | |
764 | /* Make sure the specs are of the same size. */ | |
765 | cmp = mpz_cmp (cons_size, as_size); | |
766 | if (cmp < 0) | |
767 | gfc_error ("Not enough elements in array initializer at %C"); | |
768 | else if (cmp > 0) | |
769 | gfc_error ("Too many elements in array initializer at %C"); | |
770 | mpz_clear (as_size); | |
771 | } | |
772 | mpz_clear (cons_size); | |
f6288c24 | 773 | if (cmp) |
9b24c104 | 774 | goto cleanup; |
f6288c24 FR |
775 | } |
776 | ||
777 | /* Make sure scalar types match. */ | |
778 | else if (!gfc_compare_types (&expr->ts, ts) | |
779 | && !gfc_convert_type (expr, ts, 1)) | |
780 | goto cleanup; | |
781 | ||
782 | if (expr->ts.u.cl) | |
783 | expr->ts.u.cl->length_from_typespec = 1; | |
784 | ||
785 | *result = expr; | |
f6288c24 FR |
786 | mpz_clear (repeat); |
787 | return MATCH_YES; | |
788 | ||
789 | syntax: | |
790 | gfc_error ("Syntax error in old style initializer list at %C"); | |
791 | ||
792 | cleanup: | |
793 | if (expr) | |
794 | expr->value.constructor = NULL; | |
795 | gfc_free_expr (expr); | |
796 | gfc_constructor_free (array_head); | |
f6288c24 FR |
797 | mpz_clear (repeat); |
798 | return MATCH_ERROR; | |
799 | } | |
800 | ||
801 | ||
eea58adb | 802 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 803 | |
524af0d6 | 804 | static bool |
d3a9eea2 TB |
805 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
806 | { | |
93d1ab50 | 807 | int i, j; |
d3a9eea2 | 808 | |
63fbf586 TB |
809 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
810 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
811 | { | |
812 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 813 | return false; |
63fbf586 | 814 | } |
c62c6622 | 815 | |
d3a9eea2 TB |
816 | if (to->rank == 0 && from->rank > 0) |
817 | { | |
818 | to->rank = from->rank; | |
819 | to->type = from->type; | |
820 | to->cray_pointee = from->cray_pointee; | |
821 | to->cp_was_assumed = from->cp_was_assumed; | |
822 | ||
823 | for (i = 0; i < to->corank; i++) | |
824 | { | |
93d1ab50 SK |
825 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
826 | cleans up elsewhere. */ | |
827 | j = from->rank + i; | |
828 | if (j >= GFC_MAX_DIMENSIONS) | |
829 | break; | |
830 | ||
831 | to->lower[j] = to->lower[i]; | |
832 | to->upper[j] = to->upper[i]; | |
d3a9eea2 TB |
833 | } |
834 | for (i = 0; i < from->rank; i++) | |
835 | { | |
836 | if (copy) | |
837 | { | |
838 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
839 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
840 | } | |
841 | else | |
842 | { | |
843 | to->lower[i] = from->lower[i]; | |
844 | to->upper[i] = from->upper[i]; | |
845 | } | |
846 | } | |
847 | } | |
848 | else if (to->corank == 0 && from->corank > 0) | |
849 | { | |
850 | to->corank = from->corank; | |
851 | to->cotype = from->cotype; | |
852 | ||
853 | for (i = 0; i < from->corank; i++) | |
854 | { | |
93d1ab50 SK |
855 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
856 | cleans up elsewhere. */ | |
857 | j = to->rank + i; | |
858 | if (j >= GFC_MAX_DIMENSIONS) | |
859 | break; | |
860 | ||
d3a9eea2 TB |
861 | if (copy) |
862 | { | |
93d1ab50 SK |
863 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
864 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
d3a9eea2 TB |
865 | } |
866 | else | |
867 | { | |
93d1ab50 SK |
868 | to->lower[j] = from->lower[i]; |
869 | to->upper[j] = from->upper[i]; | |
d3a9eea2 TB |
870 | } |
871 | } | |
872 | } | |
63fbf586 | 873 | |
299ab1b2 | 874 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
93d1ab50 SK |
875 | { |
876 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
877 | "allowed dimensions of %d", | |
878 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
879 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
880 | return false; | |
881 | } | |
524af0d6 | 882 | return true; |
d3a9eea2 TB |
883 | } |
884 | ||
885 | ||
6de9cd9a DN |
886 | /* Match an intent specification. Since this can only happen after an |
887 | INTENT word, a legal intent-spec must follow. */ | |
888 | ||
889 | static sym_intent | |
890 | match_intent_spec (void) | |
891 | { | |
892 | ||
893 | if (gfc_match (" ( in out )") == MATCH_YES) | |
894 | return INTENT_INOUT; | |
895 | if (gfc_match (" ( in )") == MATCH_YES) | |
896 | return INTENT_IN; | |
897 | if (gfc_match (" ( out )") == MATCH_YES) | |
898 | return INTENT_OUT; | |
899 | ||
900 | gfc_error ("Bad INTENT specification at %C"); | |
901 | return INTENT_UNKNOWN; | |
902 | } | |
903 | ||
904 | ||
905 | /* Matches a character length specification, which is either a | |
e69afb29 | 906 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
907 | |
908 | static match | |
e69afb29 | 909 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 910 | { |
cba28dad JD |
911 | match m; |
912 | ||
e69afb29 SK |
913 | *expr = NULL; |
914 | *deferred = false; | |
915 | ||
6de9cd9a | 916 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
917 | return MATCH_YES; |
918 | ||
919 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 920 | { |
98a819ea | 921 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
922 | return MATCH_ERROR; |
923 | ||
924 | *deferred = true; | |
925 | ||
6de9cd9a DN |
926 | return MATCH_YES; |
927 | } | |
928 | ||
cba28dad | 929 | m = gfc_match_expr (expr); |
f37e928c | 930 | |
98a819ea SK |
931 | if (m == MATCH_NO || m == MATCH_ERROR) |
932 | return m; | |
933 | ||
934 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
935 | return MATCH_ERROR; |
936 | ||
98a819ea | 937 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 938 | { |
8d48826b SK |
939 | if ((*expr)->ts.type == BT_INTEGER |
940 | || ((*expr)->ts.type == BT_UNKNOWN | |
941 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
942 | return MATCH_YES; | |
943 | ||
944 | goto syntax; | |
945 | } | |
946 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
947 | { | |
948 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
949 | processor dependent and its value is greater than or equal to zero. | |
950 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
951 | to a negative value, the length of character entities declared | |
952 | is zero. */ | |
953 | ||
954 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 955 | { |
8d48826b SK |
956 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
957 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 958 | } |
8d48826b SK |
959 | else |
960 | goto syntax; | |
cba28dad | 961 | } |
8d48826b SK |
962 | else if ((*expr)->expr_type == EXPR_ARRAY) |
963 | goto syntax; | |
964 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
965 | { | |
fb42421e | 966 | bool t; |
8d48826b SK |
967 | gfc_expr *e; |
968 | ||
969 | e = gfc_copy_expr (*expr); | |
970 | ||
971 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
972 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
973 | if (e->ref && e->ref->type == REF_ARRAY |
974 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
975 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
976 | goto syntax; | |
977 | ||
fb42421e SK |
978 | t = gfc_reduce_init_expr (e); |
979 | ||
8d987deb SK |
980 | if (!t && e->ts.type == BT_UNKNOWN |
981 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
982 | && (flag_implicit_none |
983 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 984 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
985 | { |
986 | gfc_free_expr (e); | |
987 | goto syntax; | |
988 | } | |
98a819ea | 989 | |
54b96a2d | 990 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 991 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
992 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
993 | { | |
994 | gfc_free_expr (e); | |
995 | goto syntax; | |
996 | } | |
997 | ||
998 | gfc_free_expr (e); | |
999 | } | |
98a819ea | 1000 | |
cba28dad JD |
1001 | return m; |
1002 | ||
1003 | syntax: | |
8d48826b | 1004 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 1005 | return MATCH_ERROR; |
6de9cd9a DN |
1006 | } |
1007 | ||
1008 | ||
1009 | /* A character length is a '*' followed by a literal integer or a | |
1010 | char_len_param_value in parenthesis. */ | |
1011 | ||
1012 | static match | |
62732c30 | 1013 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 1014 | { |
5cf54585 | 1015 | int length; |
6de9cd9a DN |
1016 | match m; |
1017 | ||
f5acf0f2 | 1018 | *deferred = false; |
6de9cd9a DN |
1019 | m = gfc_match_char ('*'); |
1020 | if (m != MATCH_YES) | |
1021 | return m; | |
1022 | ||
5cf54585 | 1023 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1024 | if (m == MATCH_ERROR) |
1025 | return m; | |
1026 | ||
1027 | if (m == MATCH_YES) | |
1028 | { | |
62732c30 | 1029 | if (obsolescent_check |
524af0d6 | 1030 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1031 | return MATCH_ERROR; |
f622221a | 1032 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1033 | return m; |
1034 | } | |
1035 | ||
1036 | if (gfc_match_char ('(') == MATCH_NO) | |
1037 | goto syntax; | |
1038 | ||
e69afb29 | 1039 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1040 | if (m != MATCH_YES && gfc_matching_function) |
1041 | { | |
1042 | gfc_undo_symbols (); | |
1043 | m = MATCH_YES; | |
1044 | } | |
1045 | ||
6de9cd9a DN |
1046 | if (m == MATCH_ERROR) |
1047 | return m; | |
1048 | if (m == MATCH_NO) | |
1049 | goto syntax; | |
1050 | ||
1051 | if (gfc_match_char (')') == MATCH_NO) | |
1052 | { | |
1053 | gfc_free_expr (*expr); | |
1054 | *expr = NULL; | |
1055 | goto syntax; | |
1056 | } | |
1057 | ||
1058 | return MATCH_YES; | |
1059 | ||
1060 | syntax: | |
1061 | gfc_error ("Syntax error in character length specification at %C"); | |
1062 | return MATCH_ERROR; | |
1063 | } | |
1064 | ||
1065 | ||
9e35b386 EE |
1066 | /* Special subroutine for finding a symbol. Check if the name is found |
1067 | in the current name space. If not, and we're compiling a function or | |
1068 | subroutine and the parent compilation unit is an interface, then check | |
1069 | to see if the name we've been given is the name of the interface | |
1070 | (located in another namespace). */ | |
6de9cd9a DN |
1071 | |
1072 | static int | |
08a6b8e0 | 1073 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1074 | { |
1075 | gfc_state_data *s; | |
08a6b8e0 | 1076 | gfc_symtree *st; |
9e35b386 | 1077 | int i; |
6de9cd9a | 1078 | |
08a6b8e0 | 1079 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1080 | if (i == 0) |
08a6b8e0 TB |
1081 | { |
1082 | *result = st ? st->n.sym : NULL; | |
1083 | goto end; | |
1084 | } | |
d51347f9 | 1085 | |
6de9cd9a DN |
1086 | if (gfc_current_state () != COMP_SUBROUTINE |
1087 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1088 | goto end; |
6de9cd9a DN |
1089 | |
1090 | s = gfc_state_stack->previous; | |
1091 | if (s == NULL) | |
9e35b386 | 1092 | goto end; |
6de9cd9a DN |
1093 | |
1094 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1095 | goto end; |
6de9cd9a | 1096 | if (s->sym == NULL) |
66e4ab31 | 1097 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1098 | |
1099 | if (strcmp (name, s->sym->name) == 0) | |
1100 | { | |
1101 | *result = s->sym; | |
1102 | return 0; | |
1103 | } | |
1104 | ||
9e35b386 EE |
1105 | end: |
1106 | return i; | |
6de9cd9a DN |
1107 | } |
1108 | ||
1109 | ||
1110 | /* Special subroutine for getting a symbol node associated with a | |
1111 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1112 | symbol is created in the parent using with symtree node in the | |
1113 | child unit pointing to the symbol. If the current namespace has no | |
1114 | parent, then the symbol is just created in the current unit. */ | |
1115 | ||
1116 | static int | |
636dff67 | 1117 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1118 | { |
1119 | gfc_symtree *st; | |
1120 | gfc_symbol *sym; | |
a7ca4d8d | 1121 | int rc = 0; |
6de9cd9a | 1122 | |
1a492601 PT |
1123 | /* Module functions have to be left in their own namespace because |
1124 | they have potentially (almost certainly!) already been referenced. | |
1125 | In this sense, they are rather like external functions. This is | |
1126 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1127 | space is set to point to the master function, so that the fake | |
1128 | result mechanism can work. */ | |
1129 | if (module_fcn_entry) | |
6c12686b PT |
1130 | { |
1131 | /* Present if entry is declared to be a module procedure. */ | |
1132 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1133 | |
6c12686b PT |
1134 | if (*result == NULL) |
1135 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1136 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1137 | && (*result)->ts.type == BT_UNKNOWN |
1138 | && sym->attr.flavor == FL_UNKNOWN) | |
1139 | /* Pick up the typespec for the entry, if declared in the function | |
1140 | body. Note that this symbol is FL_UNKNOWN because it will | |
1141 | only have appeared in a type declaration. The local symtree | |
1142 | is set to point to the module symbol and a unique symtree | |
1143 | to the local version. This latter ensures a correct clearing | |
1144 | of the symbols. */ | |
2e32a71e PT |
1145 | { |
1146 | /* If the ENTRY proceeds its specification, we need to ensure | |
1147 | that this does not raise a "has no IMPLICIT type" error. */ | |
1148 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1149 | sym->attr.untyped = 1; |
2e32a71e | 1150 | |
0e5a218b | 1151 | (*result)->ts = sym->ts; |
2e32a71e PT |
1152 | |
1153 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1154 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1155 | can be applied. */ |
1156 | (*result)->ns = gfc_current_ns; | |
1157 | ||
1158 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1159 | st->n.sym = *result; | |
1160 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1161 | sym->refs++; |
2e32a71e PT |
1162 | st->n.sym = sym; |
1163 | } | |
6c12686b | 1164 | } |
68ea355b PT |
1165 | else |
1166 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1167 | |
a7ca4d8d PT |
1168 | if (rc) |
1169 | return rc; | |
1170 | ||
68ea355b | 1171 | sym = *result; |
79124116 PT |
1172 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1173 | return rc; | |
6de9cd9a | 1174 | |
4668d6f9 PT |
1175 | if (sym->attr.module_procedure |
1176 | && sym->attr.if_source == IFSRC_IFBODY) | |
1177 | { | |
1178 | /* Create a partially populated interface symbol to carry the | |
1179 | characteristics of the procedure and the result. */ | |
c064374d PT |
1180 | sym->tlink = gfc_new_symbol (name, sym->ns); |
1181 | gfc_add_type (sym->tlink, &(sym->ts), | |
4668d6f9 | 1182 | &gfc_current_locus); |
c064374d | 1183 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1184 | if (sym->attr.dimension) |
c064374d | 1185 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1186 | |
1187 | /* Ideally, at this point, a copy would be made of the formal | |
1188 | arguments and their namespace. However, this does not appear | |
1189 | to be necessary, albeit at the expense of not being able to | |
1190 | use gfc_compare_interfaces directly. */ | |
1191 | ||
1192 | if (sym->result && sym->result != sym) | |
1193 | { | |
c064374d | 1194 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1195 | sym->result = NULL; |
1196 | } | |
1197 | else if (sym->result) | |
1198 | { | |
c064374d | 1199 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1200 | } |
1201 | } | |
1202 | else if (sym && !sym->gfc_new | |
1203 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1204 | { |
cda7004b PT |
1205 | /* Trap another encompassed procedure with the same name. All |
1206 | these conditions are necessary to avoid picking up an entry | |
1207 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1208 | this is handled using gsymbols to register unique, globally |
cda7004b | 1209 | accessible names. */ |
68ea355b | 1210 | if (sym->attr.flavor != 0 |
636dff67 | 1211 | && sym->attr.proc != 0 |
64300da7 | 1212 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
636dff67 | 1213 | && sym->attr.if_source != IFSRC_UNKNOWN) |
fea70c99 MLI |
1214 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1215 | name, &sym->declared_at); | |
68ea355b | 1216 | |
64300da7 SK |
1217 | if (sym->attr.flavor != 0 |
1218 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
1219 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1220 | name, &sym->declared_at); | |
1221 | ||
fd3e70af JD |
1222 | /* Trap a procedure with a name the same as interface in the |
1223 | encompassing scope. */ | |
1224 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1225 | && (sym->attr.subroutine || sym->attr.function) |
1226 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
1227 | gfc_error_now ("Name %qs at %C is already defined" |
1228 | " as a generic interface at %L", | |
1229 | name, &sym->declared_at); | |
fd3e70af | 1230 | |
68ea355b PT |
1231 | /* Trap declarations of attributes in encompassing scope. The |
1232 | signature for this is that ts.kind is set. Legitimate | |
1233 | references only set ts.type. */ | |
1234 | if (sym->ts.kind != 0 | |
636dff67 SK |
1235 | && !sym->attr.implicit_type |
1236 | && sym->attr.proc == 0 | |
1237 | && gfc_current_ns->parent != NULL | |
1238 | && sym->attr.access == 0 | |
1239 | && !module_fcn_entry) | |
fea70c99 MLI |
1240 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1241 | "and must not have attributes declared at %L", | |
1242 | name, &sym->declared_at); | |
68ea355b PT |
1243 | } |
1244 | ||
1245 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1246 | return rc; | |
6de9cd9a | 1247 | |
1a492601 PT |
1248 | /* Module function entries will already have a symtree in |
1249 | the current namespace but will need one at module level. */ | |
1250 | if (module_fcn_entry) | |
6c12686b PT |
1251 | { |
1252 | /* Present if entry is declared to be a module procedure. */ | |
1253 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1254 | if (st == NULL) | |
1255 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1256 | } | |
1a492601 PT |
1257 | else |
1258 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1259 | |
6de9cd9a DN |
1260 | st->n.sym = sym; |
1261 | sym->refs++; | |
1262 | ||
66e4ab31 | 1263 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1264 | |
1a492601 | 1265 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1266 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1267 | && sym->attr.proc != PROC_MODULE) | |
1268 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1269 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1270 | rc = 2; |
1271 | ||
1272 | return rc; | |
1273 | } | |
1274 | ||
1275 | ||
a8b3b0b6 CR |
1276 | /* Verify that the given symbol representing a parameter is C |
1277 | interoperable, by checking to see if it was marked as such after | |
1278 | its declaration. If the given symbol is not interoperable, a | |
1279 | warning is reported, thus removing the need to return the status to | |
1280 | the calling function. The standard does not require the user use | |
1281 | one of the iso_c_binding named constants to declare an | |
1282 | interoperable parameter, but we can't be sure if the param is C | |
1283 | interop or not if the user doesn't. For example, integer(4) may be | |
1284 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1285 | a number of the C types, which causes a problem because the | |
1286 | compiler can't know which one. This code is almost certainly not | |
1287 | portable, and the user will get what they deserve if the C type | |
1288 | across platforms isn't always interoperable with integer(4). If | |
1289 | the user had used something like integer(c_int) or integer(c_long), | |
1290 | the compiler could have automatically handled the varying sizes | |
1291 | across platforms. */ | |
1292 | ||
524af0d6 | 1293 | bool |
00820a2a | 1294 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1295 | { |
1296 | int is_c_interop = 0; | |
524af0d6 | 1297 | bool retval = true; |
a8b3b0b6 CR |
1298 | |
1299 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1300 | Don't repeat the checks here. */ | |
1301 | if (sym->attr.implicit_type) | |
524af0d6 | 1302 | return true; |
f5acf0f2 | 1303 | |
a8b3b0b6 CR |
1304 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1305 | they're interoperable if they're BIND(C) and their params are all | |
1306 | interoperable. */ | |
1307 | if (sym->attr.flavor == FL_PROCEDURE) | |
1308 | { | |
1309 | if (sym->attr.is_bind_c == 0) | |
1310 | { | |
4daa149b TB |
1311 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1312 | "attribute to be C interoperable", sym->name, | |
1313 | &(sym->declared_at)); | |
524af0d6 | 1314 | return false; |
a8b3b0b6 CR |
1315 | } |
1316 | else | |
1317 | { | |
1318 | if (sym->attr.is_c_interop == 1) | |
1319 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1320 | return true; |
a8b3b0b6 CR |
1321 | else |
1322 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1323 | sym->common_block); | |
1324 | } | |
1325 | } | |
f5acf0f2 | 1326 | |
a8b3b0b6 CR |
1327 | /* See if we've stored a reference to a procedure that owns sym. */ |
1328 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1329 | { | |
1330 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1331 | { | |
524af0d6 | 1332 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1333 | |
1334 | if (is_c_interop != 1) | |
1335 | { | |
1336 | /* Make personalized messages to give better feedback. */ | |
1337 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1338 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1339 | "BIND(C) procedure %qs but is not C interoperable " | |
1340 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1341 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1342 | sym->ns->proc_name->name, |
bc21d315 | 1343 | sym->ts.u.derived->name); |
00820a2a | 1344 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1345 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1346 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1347 | "because it is polymorphic", |
1348 | sym->name, &(sym->declared_at), | |
1349 | sym->ns->proc_name->name); | |
4daa149b | 1350 | else if (warn_c_binding_type) |
48749dbc MLI |
1351 | gfc_warning (OPT_Wc_binding_type, |
1352 | "Variable %qs at %L is a dummy argument of the " | |
1353 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1354 | "interoperable", |
1355 | sym->name, &(sym->declared_at), | |
1356 | sym->ns->proc_name->name); | |
1357 | } | |
aa5e22f0 CR |
1358 | |
1359 | /* Character strings are only C interoperable if they have a | |
1360 | length of 1. */ | |
1361 | if (sym->ts.type == BT_CHARACTER) | |
1362 | { | |
bc21d315 | 1363 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1364 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1365 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1366 | { | |
c4100eae | 1367 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1368 | "must be length 1 because " |
c4100eae | 1369 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1370 | sym->name, &sym->declared_at, |
1371 | sym->ns->proc_name->name); | |
524af0d6 | 1372 | retval = false; |
aa5e22f0 CR |
1373 | } |
1374 | } | |
1375 | ||
a8b3b0b6 CR |
1376 | /* We have to make sure that any param to a bind(c) routine does |
1377 | not have the allocatable, pointer, or optional attributes, | |
1378 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1379 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1380 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1381 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1382 | "with BIND(C)", sym->name, |
1383 | &(sym->declared_at), | |
1384 | sym->ns->proc_name->name)) | |
1385 | retval = false; | |
1386 | ||
1387 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1388 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1389 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1390 | "with BIND(C)", sym->name, |
1391 | &(sym->declared_at), | |
1392 | sym->ns->proc_name->name)) | |
1393 | retval = false; | |
1394 | ||
1395 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1396 | { |
c4100eae MLI |
1397 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1398 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1399 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1400 | sym->ns->proc_name->name); |
524af0d6 | 1401 | retval = false; |
a8b3b0b6 CR |
1402 | } |
1403 | ||
2e8d9212 | 1404 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1405 | { |
c4100eae MLI |
1406 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1407 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1408 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1409 | sym->ns->proc_name->name); |
524af0d6 | 1410 | retval = false; |
a8b3b0b6 | 1411 | } |
2e8d9212 | 1412 | else if (sym->attr.optional == 1 |
a4d9b221 | 1413 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1414 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1415 | "procedure %qs which is BIND(C)", |
1416 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1417 | sym->ns->proc_name->name)) |
1418 | retval = false; | |
a8b3b0b6 CR |
1419 | |
1420 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1421 | either assumed size or explicit shape. Deferred shape is already |
1422 | covered by the pointer/allocatable attribute. */ | |
1423 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1424 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 | 1425 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1426 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1427 | &(sym->declared_at), |
1428 | sym->ns->proc_name->name, | |
524af0d6 JB |
1429 | &(sym->ns->proc_name->declared_at))) |
1430 | retval = false; | |
a8b3b0b6 CR |
1431 | } |
1432 | } | |
1433 | ||
1434 | return retval; | |
1435 | } | |
1436 | ||
1437 | ||
cf2b3c22 | 1438 | |
a8b3b0b6 | 1439 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1440 | |
524af0d6 | 1441 | static bool |
e69afb29 | 1442 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1443 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1444 | { |
1445 | symbol_attribute attr; | |
1446 | gfc_symbol *sym; | |
1e6025b6 | 1447 | int upper; |
bedee914 PT |
1448 | gfc_symtree *st; |
1449 | ||
1450 | /* Symbols in a submodule are host associated from the parent module or | |
1451 | submodules. Therefore, they can be overridden by declarations in the | |
1452 | submodule scope. Deal with this by attaching the existing symbol to | |
1453 | a new symtree and recycling the old symtree with a new symbol... */ | |
1454 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1455 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1456 | && st->n.sym != NULL | |
1457 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1458 | { | |
1459 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1460 | s->n.sym = st->n.sym; | |
1461 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1462 | |
bedee914 PT |
1463 | |
1464 | st->n.sym = sym; | |
1465 | sym->refs++; | |
1466 | gfc_set_sym_referenced (sym); | |
1467 | } | |
1468 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1469 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1470 | return false; |
6de9cd9a | 1471 | |
1e6025b6 TK |
1472 | /* Check if the name has already been defined as a type. The |
1473 | first letter of the symtree will be in upper case then. Of | |
1474 | course, this is only necessary if the upper case letter is | |
1475 | actually different. */ | |
1476 | ||
1477 | upper = TOUPPER(name[0]); | |
1478 | if (upper != name[0]) | |
1479 | { | |
1480 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1481 | gfc_symtree *st; | |
1e6025b6 | 1482 | |
025d57f0 MS |
1483 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1484 | strcpy (u_name, name); | |
1e6025b6 TK |
1485 | u_name[0] = upper; |
1486 | ||
1487 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1488 | ||
f6288c24 FR |
1489 | /* STRUCTURE types can alias symbol names */ |
1490 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1491 | { |
1492 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1493 | &st->n.sym->declared_at); | |
1494 | return false; | |
1495 | } | |
1496 | } | |
1497 | ||
66e4ab31 | 1498 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1499 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1500 | && (sym->attr.implicit_type == 0 |
1501 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1502 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1503 | return false; | |
6de9cd9a DN |
1504 | |
1505 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1506 | { |
1507 | sym->ts.u.cl = cl; | |
1508 | sym->ts.deferred = cl_deferred; | |
1509 | } | |
6de9cd9a DN |
1510 | |
1511 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1512 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1513 | return false; | |
6de9cd9a DN |
1514 | *as = NULL; |
1515 | ||
1516 | /* Add attribute to symbol. The copy is so that we can reset the | |
1517 | dimension attribute. */ | |
1518 | attr = current_attr; | |
1519 | attr.dimension = 0; | |
be59db2d | 1520 | attr.codimension = 0; |
6de9cd9a | 1521 | |
524af0d6 JB |
1522 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1523 | return false; | |
6de9cd9a | 1524 | |
a8b3b0b6 CR |
1525 | /* Finish any work that may need to be done for the binding label, |
1526 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1527 | is made, and before the symbol name (for data decls), so the | |
1528 | current_ts is holding the binding label, or nothing if the | |
1529 | name= attr wasn't given. Therefore, test here if we're dealing | |
1530 | with a bind(c) and make sure the binding label is set correctly. */ | |
1531 | if (sym->attr.is_bind_c == 1) | |
1532 | { | |
62603fae | 1533 | if (!sym->binding_label) |
a8b3b0b6 | 1534 | { |
ad4a2f64 TB |
1535 | /* Set the binding label and verify that if a NAME= was specified |
1536 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1537 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1538 | num_idents_on_line)) |
1539 | return false; | |
a8b3b0b6 CR |
1540 | } |
1541 | } | |
1542 | ||
1543 | /* See if we know we're in a common block, and if it's a bind(c) | |
1544 | common then we need to make sure we're an interoperable type. */ | |
1545 | if (sym->attr.in_common == 1) | |
1546 | { | |
1547 | /* Test the common block object. */ | |
1548 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1549 | && sym->ts.is_c_interop != 1) | |
1550 | { | |
4daa149b | 1551 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1552 | "must be declared with a C interoperable " |
4daa149b | 1553 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1554 | sym->name, sym->common_block->name, |
1555 | sym->common_block->name); | |
1556 | gfc_clear_error (); | |
1557 | } | |
1558 | } | |
1559 | ||
9a3db5a3 PT |
1560 | sym->attr.implied_index = 0; |
1561 | ||
5bab4c96 PT |
1562 | /* Use the parameter expressions for a parameterized derived type. */ |
1563 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1564 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1565 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1566 | ||
528622fd | 1567 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1568 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1569 | |
524af0d6 | 1570 | return true; |
6de9cd9a DN |
1571 | } |
1572 | ||
636dff67 | 1573 | |
df7cc9b5 | 1574 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1575 | truncated. If we're inside an array constructor without a typespec, we |
1576 | additionally check that all elements have the same length; check_len -1 | |
1577 | means no checking. */ | |
df7cc9b5 FW |
1578 | |
1579 | void | |
6b271a2e JB |
1580 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1581 | gfc_charlen_t check_len) | |
df7cc9b5 | 1582 | { |
00660189 | 1583 | gfc_char_t *s; |
6b271a2e | 1584 | gfc_charlen_t slen; |
df7cc9b5 | 1585 | |
834e9dbb SK |
1586 | if (expr->ts.type != BT_CHARACTER) |
1587 | return; | |
63af1586 | 1588 | |
b441ae1d SK |
1589 | if (expr->expr_type != EXPR_CONSTANT) |
1590 | { | |
1591 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1592 | return; | |
1593 | } | |
df7cc9b5 FW |
1594 | |
1595 | slen = expr->value.character.length; | |
1596 | if (len != slen) | |
1597 | { | |
00660189 FXC |
1598 | s = gfc_get_wide_string (len + 1); |
1599 | memcpy (s, expr->value.character.string, | |
1600 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1601 | if (len > slen) |
00660189 | 1602 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1603 | |
a96c39ea | 1604 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1605 | gfc_warning_now (OPT_Wcharacter_truncation, |
1606 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1607 | "(%ld/%ld)", &expr->where, |
1608 | (long) slen, (long) len); | |
2220652d PT |
1609 | |
1610 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1611 | initializers. */ | |
d2848082 DK |
1612 | if (check_len != -1 && slen != check_len |
1613 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1614 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1615 | "at %L must have the same length (%ld/%ld)", |
1616 | &expr->where, (long) slen, | |
1617 | (long) check_len); | |
2220652d | 1618 | |
150675a8 | 1619 | s[len] = '\0'; |
cede9502 | 1620 | free (expr->value.character.string); |
df7cc9b5 FW |
1621 | expr->value.character.string = s; |
1622 | expr->value.character.length = len; | |
1623 | } | |
1624 | } | |
6de9cd9a | 1625 | |
25d8f0a2 | 1626 | |
d51347f9 | 1627 | /* Function to create and update the enumerator history |
25d8f0a2 | 1628 | using the information passed as arguments. |
d51347f9 TB |
1629 | Pointer "max_enum" is also updated, to point to |
1630 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1631 | |
1632 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1633 | INIT points to its enumerator value. */ |
25d8f0a2 | 1634 | |
d51347f9 | 1635 | static void |
636dff67 | 1636 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1637 | { |
1638 | enumerator_history *new_enum_history; | |
1639 | gcc_assert (sym != NULL && init != NULL); | |
1640 | ||
ece3f663 | 1641 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1642 | |
1643 | new_enum_history->sym = sym; | |
1644 | new_enum_history->initializer = init; | |
1645 | new_enum_history->next = NULL; | |
1646 | ||
1647 | if (enum_history == NULL) | |
1648 | { | |
1649 | enum_history = new_enum_history; | |
1650 | max_enum = enum_history; | |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | new_enum_history->next = enum_history; | |
1655 | enum_history = new_enum_history; | |
1656 | ||
d51347f9 | 1657 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1658 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1659 | max_enum = new_enum_history; |
25d8f0a2 TS |
1660 | } |
1661 | } | |
1662 | ||
1663 | ||
d51347f9 | 1664 | /* Function to free enum kind history. */ |
25d8f0a2 | 1665 | |
d51347f9 | 1666 | void |
636dff67 | 1667 | gfc_free_enum_history (void) |
25d8f0a2 | 1668 | { |
d51347f9 TB |
1669 | enumerator_history *current = enum_history; |
1670 | enumerator_history *next; | |
25d8f0a2 TS |
1671 | |
1672 | while (current != NULL) | |
1673 | { | |
1674 | next = current->next; | |
cede9502 | 1675 | free (current); |
25d8f0a2 TS |
1676 | current = next; |
1677 | } | |
1678 | max_enum = NULL; | |
1679 | enum_history = NULL; | |
1680 | } | |
1681 | ||
1682 | ||
6de9cd9a DN |
1683 | /* Function called by variable_decl() that adds an initialization |
1684 | expression to a symbol. */ | |
1685 | ||
524af0d6 | 1686 | static bool |
66e4ab31 | 1687 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1688 | { |
1689 | symbol_attribute attr; | |
1690 | gfc_symbol *sym; | |
1691 | gfc_expr *init; | |
1692 | ||
1693 | init = *initp; | |
08a6b8e0 | 1694 | if (find_special (name, &sym, false)) |
524af0d6 | 1695 | return false; |
6de9cd9a DN |
1696 | |
1697 | attr = sym->attr; | |
1698 | ||
1699 | /* If this symbol is confirming an implicit parameter type, | |
1700 | then an initialization expression is not allowed. */ | |
1701 | if (attr.flavor == FL_PARAMETER | |
1702 | && sym->value != NULL | |
1703 | && *initp != NULL) | |
1704 | { | |
c4100eae | 1705 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1706 | sym->name); |
524af0d6 | 1707 | return false; |
6de9cd9a DN |
1708 | } |
1709 | ||
1710 | if (init == NULL) | |
1711 | { | |
1712 | /* An initializer is required for PARAMETER declarations. */ | |
1713 | if (attr.flavor == FL_PARAMETER) | |
1714 | { | |
1715 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1716 | return false; |
6de9cd9a DN |
1717 | } |
1718 | } | |
1719 | else | |
1720 | { | |
1721 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1722 | initializer. */ |
6de9cd9a DN |
1723 | if (sym->attr.data) |
1724 | { | |
c4100eae | 1725 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1726 | "appears in a DATA statement", sym->name); |
524af0d6 | 1727 | return false; |
6de9cd9a DN |
1728 | } |
1729 | ||
75d17889 | 1730 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1731 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1732 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1733 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1734 | && !sym->attr.proc_pointer |
524af0d6 JB |
1735 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1736 | return false; | |
6de9cd9a | 1737 | |
bc21d315 | 1738 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1739 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1740 | { |
1741 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1742 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1743 | return false; | |
51b128a0 | 1744 | |
bc21d315 | 1745 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1746 | { |
f622221a | 1747 | gfc_charlen_t clen; |
66e4ab31 SK |
1748 | /* If there are multiple CHARACTER variables declared on the |
1749 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1750 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1751 | |
a99288e5 PT |
1752 | if (sym->attr.flavor == FL_PARAMETER) |
1753 | { | |
1754 | if (init->expr_type == EXPR_CONSTANT) | |
1755 | { | |
1756 | clen = init->value.character.length; | |
b7e75771 | 1757 | sym->ts.u.cl->length |
f622221a | 1758 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1759 | NULL, clen); |
a99288e5 PT |
1760 | } |
1761 | else if (init->expr_type == EXPR_ARRAY) | |
1762 | { | |
c004a341 | 1763 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1764 | { |
1765 | const gfc_expr *length = init->ts.u.cl->length; | |
1766 | if (length->expr_type != EXPR_CONSTANT) | |
1767 | { | |
1768 | gfc_error ("Cannot initialize parameter array " | |
1769 | "at %L " | |
1770 | "with variable length elements", | |
1771 | &sym->declared_at); | |
1772 | return false; | |
1773 | } | |
1774 | clen = mpz_get_si (length->value.integer); | |
1775 | } | |
dc0f176a SK |
1776 | else if (init->value.constructor) |
1777 | { | |
1778 | gfc_constructor *c; | |
70112e2a | 1779 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1780 | clen = c->expr->value.character.length; |
1781 | } | |
1782 | else | |
1783 | gcc_unreachable (); | |
b7e75771 | 1784 | sym->ts.u.cl->length |
f622221a | 1785 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1786 | NULL, clen); |
a99288e5 | 1787 | } |
bc21d315 JW |
1788 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1789 | sym->ts.u.cl->length = | |
1790 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1791 | } |
df7cc9b5 FW |
1792 | } |
1793 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1794 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1795 | { |
d30ecc9c SK |
1796 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1797 | return false; | |
1798 | ||
aeb8c028 JJ |
1799 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1800 | false); | |
1801 | /* resolve_charlen will complain later on if the length | |
1802 | is too large. Just skeep the initialization in that case. */ | |
1803 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1804 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1805 | { |
aeb8c028 JJ |
1806 | HOST_WIDE_INT len |
1807 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1808 | ||
1809 | if (init->expr_type == EXPR_CONSTANT) | |
1810 | gfc_set_constant_character_len (len, init, -1); | |
1811 | else if (init->expr_type == EXPR_ARRAY) | |
1812 | { | |
1813 | gfc_constructor *c; | |
b7e75771 | 1814 | |
aeb8c028 JJ |
1815 | /* Build a new charlen to prevent simplification from |
1816 | deleting the length before it is resolved. */ | |
1817 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1818 | init->ts.u.cl->length | |
1819 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 1820 | |
aeb8c028 JJ |
1821 | for (c = gfc_constructor_first (init->value.constructor); |
1822 | c; c = gfc_constructor_next (c)) | |
1823 | gfc_set_constant_character_len (len, c->expr, -1); | |
1824 | } | |
df7cc9b5 FW |
1825 | } |
1826 | } | |
1827 | } | |
1828 | ||
f5ca06e6 DK |
1829 | /* If sym is implied-shape, set its upper bounds from init. */ |
1830 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1831 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1832 | { | |
1833 | int dim; | |
1834 | ||
1835 | if (init->rank == 0) | |
1836 | { | |
1837 | gfc_error ("Can't initialize implied-shape array at %L" | |
1838 | " with scalar", &sym->declared_at); | |
524af0d6 | 1839 | return false; |
f5ca06e6 | 1840 | } |
f5ca06e6 DK |
1841 | |
1842 | /* Shape should be present, we get an initialization expression. */ | |
1843 | gcc_assert (init->shape); | |
1844 | ||
1845 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1846 | { | |
1847 | int k; | |
cdffe788 | 1848 | gfc_expr *e, *lower; |
f5acf0f2 | 1849 | |
f5ca06e6 | 1850 | lower = sym->as->lower[dim]; |
cdffe788 | 1851 | |
70112e2a | 1852 | /* If the lower bound is an array element from another |
cdffe788 SK |
1853 | parameterized array, then it is marked with EXPR_VARIABLE and |
1854 | is an initialization expression. Try to reduce it. */ | |
1855 | if (lower->expr_type == EXPR_VARIABLE) | |
1856 | gfc_reduce_init_expr (lower); | |
1857 | ||
1858 | if (lower->expr_type == EXPR_CONSTANT) | |
1859 | { | |
1860 | /* All dimensions must be without upper bound. */ | |
1861 | gcc_assert (!sym->as->upper[dim]); | |
1862 | ||
1863 | k = lower->ts.kind; | |
1864 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1865 | mpz_add (e->value.integer, lower->value.integer, | |
1866 | init->shape[dim]); | |
1867 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1868 | sym->as->upper[dim] = e; | |
1869 | } | |
1870 | else | |
f5ca06e6 DK |
1871 | { |
1872 | gfc_error ("Non-constant lower bound in implied-shape" | |
1873 | " declaration at %L", &lower->where); | |
524af0d6 | 1874 | return false; |
f5ca06e6 | 1875 | } |
f5ca06e6 DK |
1876 | } |
1877 | ||
1878 | sym->as->type = AS_EXPLICIT; | |
1879 | } | |
1880 | ||
a8b3b0b6 CR |
1881 | /* Need to check if the expression we initialized this |
1882 | to was one of the iso_c_binding named constants. If so, | |
1883 | and we're a parameter (constant), let it be iso_c. | |
1884 | For example: | |
1885 | integer(c_int), parameter :: my_int = c_int | |
1886 | integer(my_int) :: my_int_2 | |
1887 | If we mark my_int as iso_c (since we can see it's value | |
1888 | is equal to one of the named constants), then my_int_2 | |
1889 | will be considered C interoperable. */ | |
f6288c24 | 1890 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
1891 | { |
1892 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1893 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1894 | /* attr bits needed for module files. */ | |
1895 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1896 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1897 | if (init->ts.is_iso_c) | |
1898 | sym->ts.f90_type = init->ts.f90_type; | |
1899 | } | |
b7e75771 | 1900 | |
6de9cd9a DN |
1901 | /* Add initializer. Make sure we keep the ranks sane. */ |
1902 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1903 | { |
1904 | mpz_t size; | |
1905 | gfc_expr *array; | |
a9b43781 PT |
1906 | int n; |
1907 | if (sym->attr.flavor == FL_PARAMETER | |
1908 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1909 | && spec_size (sym->as, &size) |
a9b43781 PT |
1910 | && mpz_cmp_si (size, 0) > 0) |
1911 | { | |
b7e75771 JD |
1912 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1913 | &init->where); | |
a9b43781 | 1914 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1915 | gfc_constructor_append_expr (&array->value.constructor, |
1916 | n == 0 | |
1917 | ? init | |
1918 | : gfc_copy_expr (init), | |
1919 | &init->where); | |
f5acf0f2 | 1920 | |
a9b43781 PT |
1921 | array->shape = gfc_get_shape (sym->as->rank); |
1922 | for (n = 0; n < sym->as->rank; n++) | |
1923 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1924 | ||
1925 | init = array; | |
1926 | mpz_clear (size); | |
1927 | } | |
1928 | init->rank = sym->as->rank; | |
1929 | } | |
6de9cd9a DN |
1930 | |
1931 | sym->value = init; | |
ef7236d2 DF |
1932 | if (sym->attr.save == SAVE_NONE) |
1933 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1934 | *initp = NULL; |
1935 | } | |
1936 | ||
524af0d6 | 1937 | return true; |
6de9cd9a DN |
1938 | } |
1939 | ||
1940 | ||
1941 | /* Function called by variable_decl() that adds a name to a structure | |
1942 | being built. */ | |
1943 | ||
524af0d6 | 1944 | static bool |
636dff67 SK |
1945 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1946 | gfc_array_spec **as) | |
6de9cd9a | 1947 | { |
f6288c24 | 1948 | gfc_state_data *s; |
6de9cd9a DN |
1949 | gfc_component *c; |
1950 | ||
619dd721 | 1951 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1952 | constructing, it must have the pointer attribute. */ |
619dd721 | 1953 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1954 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1955 | && current_attr.pointer == 0) |
1956 | { | |
bf9f15ee PT |
1957 | if (current_attr.allocatable |
1958 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
1959 | "must have the POINTER attribute")) | |
1960 | { | |
1961 | return false; | |
1962 | } | |
1963 | else if (current_attr.allocatable == 0) | |
1964 | { | |
9cbf8673 JW |
1965 | gfc_error ("Component at %C must have the POINTER attribute"); |
1966 | return false; | |
1967 | } | |
6de9cd9a | 1968 | } |
9cbf8673 JW |
1969 | |
1970 | /* F03:C437. */ | |
1971 | if (current_ts.type == BT_CLASS | |
1972 | && !(current_attr.pointer || current_attr.allocatable)) | |
1973 | { | |
1974 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
1975 | "or pointer", name); | |
1976 | return false; | |
bf9f15ee | 1977 | } |
6de9cd9a | 1978 | |
636dff67 | 1979 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1980 | { |
1981 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1982 | { | |
1983 | gfc_error ("Array component of structure at %C must have explicit " | |
1984 | "or deferred shape"); | |
524af0d6 | 1985 | return false; |
6de9cd9a DN |
1986 | } |
1987 | } | |
1988 | ||
f6288c24 FR |
1989 | /* If we are in a nested union/map definition, gfc_add_component will not |
1990 | properly find repeated components because: | |
6442a6f4 | 1991 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
1992 | and maps are implicity chained so nested components may conflict. |
1993 | (ii) Unions and maps are not linked as components of their parent | |
1994 | structures until after they are parsed. | |
1995 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
1996 | we search each block directly from the parse stack until we find the top | |
1997 | level structure. */ | |
1998 | ||
1999 | s = gfc_state_stack; | |
2000 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2001 | { | |
2002 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2003 | { | |
2004 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2005 | if (c != NULL) | |
2006 | { | |
2f029c08 | 2007 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
2008 | name, &c->loc); |
2009 | return false; | |
2010 | } | |
2011 | /* Break after we've searched the entire chain. */ | |
2012 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2013 | break; | |
2014 | s = s->previous; | |
2015 | } | |
2016 | } | |
2017 | ||
524af0d6 JB |
2018 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2019 | return false; | |
6de9cd9a DN |
2020 | |
2021 | c->ts = current_ts; | |
bc21d315 JW |
2022 | if (c->ts.type == BT_CHARACTER) |
2023 | c->ts.u.cl = cl; | |
5bab4c96 PT |
2024 | |
2025 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2026 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2027 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2028 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2029 | ||
d4b7d0f0 | 2030 | c->attr = current_attr; |
6de9cd9a DN |
2031 | |
2032 | c->initializer = *init; | |
2033 | *init = NULL; | |
2034 | ||
2035 | c->as = *as; | |
2036 | if (c->as != NULL) | |
be59db2d TB |
2037 | { |
2038 | if (c->as->corank) | |
2039 | c->attr.codimension = 1; | |
2040 | if (c->as->rank) | |
2041 | c->attr.dimension = 1; | |
2042 | } | |
6de9cd9a DN |
2043 | *as = NULL; |
2044 | ||
7fc61626 | 2045 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2046 | |
6de9cd9a | 2047 | /* Check array components. */ |
d4b7d0f0 | 2048 | if (!c->attr.dimension) |
2e23972e | 2049 | goto scalar; |
6de9cd9a | 2050 | |
d4b7d0f0 | 2051 | if (c->attr.pointer) |
6de9cd9a DN |
2052 | { |
2053 | if (c->as->type != AS_DEFERRED) | |
2054 | { | |
5046aff5 PT |
2055 | gfc_error ("Pointer array component of structure at %C must have a " |
2056 | "deferred shape"); | |
a4f15a7d | 2057 | return false; |
5046aff5 PT |
2058 | } |
2059 | } | |
d4b7d0f0 | 2060 | else if (c->attr.allocatable) |
5046aff5 PT |
2061 | { |
2062 | if (c->as->type != AS_DEFERRED) | |
2063 | { | |
2064 | gfc_error ("Allocatable component of structure at %C must have a " | |
2065 | "deferred shape"); | |
a4f15a7d | 2066 | return false; |
6de9cd9a DN |
2067 | } |
2068 | } | |
2069 | else | |
2070 | { | |
2071 | if (c->as->type != AS_EXPLICIT) | |
2072 | { | |
636dff67 SK |
2073 | gfc_error ("Array component of structure at %C must have an " |
2074 | "explicit shape"); | |
a4f15a7d | 2075 | return false; |
6de9cd9a DN |
2076 | } |
2077 | } | |
2078 | ||
2e23972e JW |
2079 | scalar: |
2080 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2081 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2082 | |
5bab4c96 PT |
2083 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2084 | { | |
2085 | gfc_symbol *sym; | |
2086 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2087 | 0, &sym); | |
2088 | if (sym == NULL) | |
2089 | { | |
2090 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2091 | "in the type parameter name list at %L", | |
2092 | c->name, &gfc_current_block ()->declared_at); | |
2093 | return false; | |
2094 | } | |
2095 | sym->ts = c->ts; | |
2096 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2097 | sym->attr.pdt_len = c->attr.pdt_len; | |
2098 | if (c->initializer) | |
2099 | sym->value = gfc_copy_expr (c->initializer); | |
2100 | sym->attr.flavor = FL_VARIABLE; | |
2101 | } | |
2102 | ||
2103 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2104 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2105 | && decl_type_param_list) | |
2106 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2107 | ||
a4f15a7d | 2108 | return true; |
6de9cd9a DN |
2109 | } |
2110 | ||
2111 | ||
2112 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2113 | ||
2114 | match | |
636dff67 | 2115 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2116 | { |
2117 | gfc_symbol *sym; | |
576f6da6 | 2118 | match m, m2 = MATCH_NO; |
6de9cd9a | 2119 | |
576f6da6 TB |
2120 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2121 | return MATCH_ERROR; | |
2122 | ||
2123 | if (m == MATCH_NO) | |
2124 | { | |
2125 | locus old_loc; | |
2126 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2127 | ||
94241120 | 2128 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2129 | return m2; |
2130 | ||
2131 | old_loc = gfc_current_locus; | |
2132 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2133 | return MATCH_ERROR; | |
2134 | if (m2 != MATCH_YES | |
2135 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2136 | return MATCH_ERROR; | |
2137 | if (m2 == MATCH_NO) | |
2138 | { | |
2139 | gfc_current_locus = old_loc; | |
2140 | return MATCH_NO; | |
2141 | } | |
2142 | } | |
6de9cd9a DN |
2143 | |
2144 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2145 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2146 | { | |
2147 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2148 | return MATCH_ERROR; | |
2149 | } | |
2150 | ||
2151 | gfc_intrinsic_symbol (sym); | |
2152 | ||
2153 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2154 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2155 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2156 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2157 | return MATCH_ERROR; |
2158 | ||
b7e75771 | 2159 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2160 | |
576f6da6 TB |
2161 | /* Invalid per F2008, C512. */ |
2162 | if (m2 == MATCH_YES) | |
2163 | { | |
2164 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2165 | return MATCH_ERROR; | |
2166 | } | |
2167 | ||
6de9cd9a DN |
2168 | return MATCH_YES; |
2169 | } | |
2170 | ||
2171 | ||
80f95228 JW |
2172 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2173 | ||
2174 | static match | |
2175 | match_pointer_init (gfc_expr **init, int procptr) | |
2176 | { | |
2177 | match m; | |
2178 | ||
f6288c24 | 2179 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2180 | { |
2181 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2182 | "a PURE procedure"); | |
2183 | return MATCH_ERROR; | |
2184 | } | |
ccd7751b | 2185 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2186 | |
eea58adb | 2187 | /* Match NULL() initialization. */ |
80f95228 JW |
2188 | m = gfc_match_null (init); |
2189 | if (m != MATCH_NO) | |
2190 | return m; | |
2191 | ||
2192 | /* Match non-NULL initialization. */ | |
837c4b78 | 2193 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2194 | gfc_matching_procptr_assignment = procptr; |
2195 | m = gfc_match_rvalue (init); | |
837c4b78 | 2196 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2197 | gfc_matching_procptr_assignment = 0; |
2198 | if (m == MATCH_ERROR) | |
2199 | return MATCH_ERROR; | |
2200 | else if (m == MATCH_NO) | |
2201 | { | |
2202 | gfc_error ("Error in pointer initialization at %C"); | |
2203 | return MATCH_ERROR; | |
2204 | } | |
2205 | ||
dc9a54fa JW |
2206 | if (!procptr && !gfc_resolve_expr (*init)) |
2207 | return MATCH_ERROR; | |
f5acf0f2 | 2208 | |
524af0d6 JB |
2209 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2210 | "initialization at %C")) | |
80f95228 JW |
2211 | return MATCH_ERROR; |
2212 | ||
2213 | return MATCH_YES; | |
2214 | } | |
2215 | ||
2216 | ||
524af0d6 | 2217 | static bool |
bb9de0c4 JW |
2218 | check_function_name (char *name) |
2219 | { | |
2220 | /* In functions that have a RESULT variable defined, the function name always | |
2221 | refers to function calls. Therefore, the name is not allowed to appear in | |
2222 | specification statements. When checking this, be careful about | |
2223 | 'hidden' procedure pointer results ('ppr@'). */ | |
2224 | ||
2225 | if (gfc_current_state () == COMP_FUNCTION) | |
2226 | { | |
2227 | gfc_symbol *block = gfc_current_block (); | |
2228 | if (block && block->result && block->result != block | |
2229 | && strcmp (block->result->name, "ppr@") != 0 | |
2230 | && strcmp (block->name, name) == 0) | |
2231 | { | |
c4100eae | 2232 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 2233 | return false; |
bb9de0c4 JW |
2234 | } |
2235 | } | |
2236 | ||
524af0d6 | 2237 | return true; |
bb9de0c4 JW |
2238 | } |
2239 | ||
2240 | ||
6de9cd9a DN |
2241 | /* Match a variable name with an optional initializer. When this |
2242 | subroutine is called, a variable is expected to be parsed next. | |
2243 | Depending on what is happening at the moment, updates either the | |
2244 | symbol table or the current interface. */ | |
2245 | ||
2246 | static match | |
949d5b72 | 2247 | variable_decl (int elem) |
6de9cd9a DN |
2248 | { |
2249 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2250 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2251 | gfc_expr *initializer, *char_len; |
2252 | gfc_array_spec *as; | |
83d890b9 | 2253 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2254 | gfc_charlen *cl; |
e69afb29 | 2255 | bool cl_deferred; |
6de9cd9a DN |
2256 | locus var_locus; |
2257 | match m; | |
524af0d6 | 2258 | bool t; |
83d890b9 | 2259 | gfc_symbol *sym; |
6de9cd9a DN |
2260 | |
2261 | initializer = NULL; | |
2262 | as = NULL; | |
83d890b9 | 2263 | cp_as = NULL; |
6de9cd9a DN |
2264 | |
2265 | /* When we get here, we've just matched a list of attributes and | |
2266 | maybe a type and a double colon. The next thing we expect to see | |
2267 | is the name of the symbol. */ | |
6f855a26 FR |
2268 | |
2269 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2270 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2271 | m = MATCH_NO; | |
2272 | gfc_gobble_whitespace (); | |
2273 | if (gfc_peek_ascii_char () == '%') | |
2274 | { | |
2275 | gfc_next_ascii_char (); | |
2276 | m = gfc_match ("fill"); | |
2277 | } | |
2278 | ||
6de9cd9a | 2279 | if (m != MATCH_YES) |
6f855a26 FR |
2280 | { |
2281 | m = gfc_match_name (name); | |
2282 | if (m != MATCH_YES) | |
2283 | goto cleanup; | |
2284 | } | |
2285 | ||
2286 | else | |
2287 | { | |
2288 | m = MATCH_ERROR; | |
2289 | if (gfc_current_state () != COMP_STRUCTURE) | |
2290 | { | |
2291 | if (flag_dec_structure) | |
2292 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2293 | else | |
2294 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2295 | "%<-fdec-structure%>", "%FILL"); | |
2296 | goto cleanup; | |
2297 | } | |
2298 | ||
2299 | if (attr_seen) | |
2300 | { | |
2301 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2302 | goto cleanup; | |
2303 | } | |
2304 | ||
2305 | /* %FILL components are given invalid fortran names. */ | |
2306 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2307 | m = MATCH_YES; | |
2308 | } | |
6de9cd9a | 2309 | |
63645982 | 2310 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2311 | |
2312 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2313 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2314 | if (m == MATCH_ERROR) |
6de9cd9a | 2315 | goto cleanup; |
25d8f0a2 | 2316 | |
6de9cd9a DN |
2317 | if (m == MATCH_NO) |
2318 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2319 | else if (current_as |
524af0d6 | 2320 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2321 | { |
2322 | m = MATCH_ERROR; | |
2323 | goto cleanup; | |
2324 | } | |
6de9cd9a | 2325 | |
c61819ff | 2326 | if (flag_cray_pointer) |
11126dc0 AL |
2327 | cp_as = gfc_copy_array_spec (as); |
2328 | ||
f5ca06e6 DK |
2329 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2330 | determine (and check) whether it can be implied-shape. If it | |
2331 | was parsed as assumed-size, change it because PARAMETERs can not | |
09ef33c1 SK |
2332 | be assumed-size. |
2333 | ||
2334 | An explicit-shape-array cannot appear under several conditions. | |
2335 | That check is done here as well. */ | |
f5ca06e6 DK |
2336 | if (as) |
2337 | { | |
2338 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2339 | { | |
2340 | m = MATCH_ERROR; | |
c4100eae | 2341 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2342 | name, &var_locus); |
2343 | goto cleanup; | |
2344 | } | |
2345 | ||
2346 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2347 | && current_attr.flavor == FL_PARAMETER) | |
2348 | as->type = AS_IMPLIED_SHAPE; | |
2349 | ||
2350 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2351 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2352 | &var_locus)) |
f5ca06e6 DK |
2353 | { |
2354 | m = MATCH_ERROR; | |
2355 | goto cleanup; | |
2356 | } | |
09ef33c1 SK |
2357 | |
2358 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2359 | constant expressions shall appear only in a subprogram, derived | |
2360 | type definition, BLOCK construct, or interface body. */ | |
2361 | if (as->type == AS_EXPLICIT | |
2362 | && gfc_current_state () != COMP_BLOCK | |
2363 | && gfc_current_state () != COMP_DERIVED | |
2364 | && gfc_current_state () != COMP_FUNCTION | |
2365 | && gfc_current_state () != COMP_INTERFACE | |
2366 | && gfc_current_state () != COMP_SUBROUTINE) | |
2367 | { | |
2368 | gfc_expr *e; | |
2369 | bool not_constant = false; | |
2370 | ||
2371 | for (int i = 0; i < as->rank; i++) | |
2372 | { | |
2373 | e = gfc_copy_expr (as->lower[i]); | |
2374 | gfc_resolve_expr (e); | |
2375 | gfc_simplify_expr (e, 0); | |
2376 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2377 | { | |
2378 | not_constant = true; | |
2379 | break; | |
2380 | } | |
2381 | gfc_free_expr (e); | |
2382 | ||
2383 | e = gfc_copy_expr (as->upper[i]); | |
2384 | gfc_resolve_expr (e); | |
2385 | gfc_simplify_expr (e, 0); | |
2386 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2387 | { | |
2388 | not_constant = true; | |
2389 | break; | |
2390 | } | |
2391 | gfc_free_expr (e); | |
2392 | } | |
2393 | ||
2394 | if (not_constant) | |
2395 | { | |
2396 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); | |
2397 | m = MATCH_ERROR; | |
2398 | goto cleanup; | |
2399 | } | |
2400 | } | |
f5ca06e6 DK |
2401 | } |
2402 | ||
6de9cd9a DN |
2403 | char_len = NULL; |
2404 | cl = NULL; | |
e69afb29 | 2405 | cl_deferred = false; |
6de9cd9a DN |
2406 | |
2407 | if (current_ts.type == BT_CHARACTER) | |
2408 | { | |
2767f2cc | 2409 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2410 | { |
2411 | case MATCH_YES: | |
b76e28c6 | 2412 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2413 | |
2414 | cl->length = char_len; | |
2415 | break; | |
2416 | ||
949d5b72 | 2417 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2418 | element. Also copy assumed lengths. */ |
6de9cd9a | 2419 | case MATCH_NO: |
9b21a380 | 2420 | if (elem > 1 |
bc21d315 JW |
2421 | && (current_ts.u.cl->length == NULL |
2422 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2423 | { |
b76e28c6 | 2424 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2425 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2426 | } |
2427 | else | |
bc21d315 | 2428 | cl = current_ts.u.cl; |
949d5b72 | 2429 | |
e69afb29 SK |
2430 | cl_deferred = current_ts.deferred; |
2431 | ||
6de9cd9a DN |
2432 | break; |
2433 | ||
2434 | case MATCH_ERROR: | |
2435 | goto cleanup; | |
2436 | } | |
2437 | } | |
2438 | ||
4668d6f9 PT |
2439 | /* The dummy arguments and result of the abreviated form of MODULE |
2440 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2441 | if (gfc_current_ns->proc_name | |
2442 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2443 | { | |
2444 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2445 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2446 | { | |
2447 | m = MATCH_ERROR; | |
811582ec | 2448 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2449 | "in the corresponding interface for MODULE " |
811582ec | 2450 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2451 | gfc_current_ns->proc_name->name); |
2452 | goto cleanup; | |
2453 | } | |
2454 | } | |
2455 | ||
6f855a26 FR |
2456 | /* %FILL components may not have initializers. */ |
2457 | if (strncmp (name, "%FILL", 5) == 0 && gfc_match_eos () != MATCH_YES) | |
2458 | { | |
2459 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2460 | m = MATCH_ERROR; | |
2461 | goto cleanup; | |
2462 | } | |
2463 | ||
83d890b9 | 2464 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2465 | and this is not a component declaration, |
66e4ab31 | 2466 | then we want to set the type & bail out. */ |
f6288c24 | 2467 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2468 | { |
2469 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2470 | if (sym != NULL && sym->attr.cray_pointee) | |
2471 | { | |
2472 | sym->ts.type = current_ts.type; | |
2473 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2474 | sym->ts.u.cl = cl; |
2475 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2476 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2477 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2478 | m = MATCH_YES; |
f5acf0f2 | 2479 | |
83d890b9 AL |
2480 | /* Check to see if we have an array specification. */ |
2481 | if (cp_as != NULL) | |
2482 | { | |
2483 | if (sym->as != NULL) | |
2484 | { | |
e25a0da3 | 2485 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2486 | gfc_free_array_spec (cp_as); |
2487 | m = MATCH_ERROR; | |
2488 | goto cleanup; | |
2489 | } | |
2490 | else | |
2491 | { | |
524af0d6 | 2492 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2493 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2494 | |
83d890b9 | 2495 | /* Fix the array spec. */ |
d51347f9 | 2496 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2497 | if (m == MATCH_ERROR) |
2498 | goto cleanup; | |
2499 | } | |
d51347f9 | 2500 | } |
83d890b9 AL |
2501 | goto cleanup; |
2502 | } | |
2503 | else | |
2504 | { | |
2505 | gfc_free_array_spec (cp_as); | |
2506 | } | |
2507 | } | |
d51347f9 | 2508 | |
3070bab4 JW |
2509 | /* Procedure pointer as function result. */ |
2510 | if (gfc_current_state () == COMP_FUNCTION | |
2511 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2512 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2513 | strcpy (name, "ppr@"); | |
2514 | ||
2515 | if (gfc_current_state () == COMP_FUNCTION | |
2516 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2517 | && gfc_current_block ()->result | |
2518 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2519 | strcpy (name, "ppr@"); | |
d51347f9 | 2520 | |
6de9cd9a DN |
2521 | /* OK, we've successfully matched the declaration. Now put the |
2522 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2523 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2524 | perfectly legal: |
2525 | ||
2526 | integer, parameter :: i = huge(i) | |
2527 | ||
2528 | This is only true for parameters or variables of a basic type. | |
2529 | For components of derived types, it is not true, so we don't | |
2530 | create a symbol for those yet. If we fail to create the symbol, | |
2531 | bail out. */ | |
f6288c24 | 2532 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2533 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2534 | { |
72af9f0b PT |
2535 | m = MATCH_ERROR; |
2536 | goto cleanup; | |
2537 | } | |
2538 | ||
524af0d6 | 2539 | if (!check_function_name (name)) |
6de9cd9a | 2540 | { |
6de9cd9a DN |
2541 | m = MATCH_ERROR; |
2542 | goto cleanup; | |
2543 | } | |
2544 | ||
294fbfc8 TS |
2545 | /* We allow old-style initializations of the form |
2546 | integer i /2/, j(4) /3*3, 1/ | |
2547 | (if no colon has been seen). These are different from data | |
2548 | statements in that initializers are only allowed to apply to the | |
2549 | variable immediately preceding, i.e. | |
2550 | integer i, j /1, 2/ | |
2551 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2552 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2553 | |
2554 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2555 | { | |
524af0d6 JB |
2556 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2557 | "initialization at %C")) | |
294fbfc8 | 2558 | return MATCH_ERROR; |
f6288c24 FR |
2559 | |
2560 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2561 | but not components of derived types. */ | |
b18f1efc JJ |
2562 | else if (gfc_current_state () == COMP_DERIVED) |
2563 | { | |
2564 | gfc_error ("Invalid old style initialization for derived type " | |
2565 | "component at %C"); | |
2566 | m = MATCH_ERROR; | |
2567 | goto cleanup; | |
2568 | } | |
f5acf0f2 | 2569 | |
f6288c24 FR |
2570 | /* For structure components, read the initializer as a special |
2571 | expression and let the rest of this function apply the initializer | |
2572 | as usual. */ | |
2573 | else if (gfc_comp_struct (gfc_current_state ())) | |
2574 | { | |
2575 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2576 | if (m == MATCH_NO) | |
2577 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2578 | name); | |
2579 | if (m != MATCH_YES) | |
2580 | goto cleanup; | |
2581 | } | |
2582 | ||
2583 | /* Otherwise we treat the old style initialization just like a | |
2584 | DATA declaration for the current variable. */ | |
2585 | else | |
2586 | return match_old_style_init (name); | |
294fbfc8 TS |
2587 | } |
2588 | ||
6de9cd9a DN |
2589 | /* The double colon must be present in order to have initializers. |
2590 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2591 | if (colon_seen) | |
2592 | { | |
2593 | if (gfc_match (" =>") == MATCH_YES) | |
2594 | { | |
6de9cd9a DN |
2595 | if (!current_attr.pointer) |
2596 | { | |
2597 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2598 | m = MATCH_ERROR; | |
2599 | goto cleanup; | |
2600 | } | |
2601 | ||
80f95228 | 2602 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2603 | if (m != MATCH_YES) |
2604 | goto cleanup; | |
6de9cd9a DN |
2605 | } |
2606 | else if (gfc_match_char ('=') == MATCH_YES) | |
2607 | { | |
2608 | if (current_attr.pointer) | |
2609 | { | |
a4d9b221 TB |
2610 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2611 | "not %<=%>"); | |
6de9cd9a DN |
2612 | m = MATCH_ERROR; |
2613 | goto cleanup; | |
2614 | } | |
2615 | ||
2616 | m = gfc_match_init_expr (&initializer); | |
2617 | if (m == MATCH_NO) | |
2618 | { | |
2619 | gfc_error ("Expected an initialization expression at %C"); | |
2620 | m = MATCH_ERROR; | |
2621 | } | |
2622 | ||
ade20620 | 2623 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2624 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2625 | { |
636dff67 SK |
2626 | gfc_error ("Initialization of variable at %C is not allowed in " |
2627 | "a PURE procedure"); | |
6de9cd9a DN |
2628 | m = MATCH_ERROR; |
2629 | } | |
2630 | ||
ccd7751b | 2631 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2632 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2633 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2634 | ||
6de9cd9a DN |
2635 | if (m != MATCH_YES) |
2636 | goto cleanup; | |
2637 | } | |
cb44ab82 VL |
2638 | } |
2639 | ||
5046aff5 | 2640 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2641 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2642 | { |
636dff67 SK |
2643 | gfc_error ("Initialization of allocatable component at %C is not " |
2644 | "allowed"); | |
5046aff5 PT |
2645 | m = MATCH_ERROR; |
2646 | goto cleanup; | |
2647 | } | |
2648 | ||
18a4e7e3 PT |
2649 | if (gfc_current_state () == COMP_DERIVED |
2650 | && gfc_current_block ()->attr.pdt_template) | |
2651 | { | |
2652 | gfc_symbol *param; | |
2653 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2654 | 0, ¶m); | |
2655 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2656 | { | |
2657 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2658 | "not appear in the type parameter list at %L", | |
2659 | &gfc_current_block ()->declared_at); | |
2660 | m = MATCH_ERROR; | |
2661 | goto cleanup; | |
2662 | } | |
2663 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2664 | { | |
2665 | gfc_error ("The component at %C that appears in the type parameter " | |
2666 | "list at %L has neither the KIND nor LEN attribute", | |
2667 | &gfc_current_block ()->declared_at); | |
2668 | m = MATCH_ERROR; | |
2669 | goto cleanup; | |
2670 | } | |
2671 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2672 | { | |
2673 | gfc_error ("The component at %C which is a type parameter must be " | |
2674 | "a scalar"); | |
2675 | m = MATCH_ERROR; | |
2676 | goto cleanup; | |
2677 | } | |
2678 | else if (param && initializer) | |
2679 | param->value = gfc_copy_expr (initializer); | |
2680 | } | |
2681 | ||
54b4ba60 | 2682 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2683 | NULL here, because we sometimes also need to check if a |
2684 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2685 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2686 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2687 | else | |
54b4ba60 | 2688 | { |
5046aff5 | 2689 | if (current_ts.type == BT_DERIVED |
636dff67 | 2690 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2691 | initializer = gfc_default_initializer (¤t_ts); |
2692 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2693 | |
2694 | /* If we match a nested structure definition we expect to see the | |
2695 | * body even if the variable declarations blow up, so we need to keep | |
2696 | * the structure declaration around. */ | |
2697 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2698 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2699 | } |
6de9cd9a | 2700 | |
524af0d6 | 2701 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2702 | |
2703 | cleanup: | |
2704 | /* Free stuff up and return. */ | |
2705 | gfc_free_expr (initializer); | |
2706 | gfc_free_array_spec (as); | |
2707 | ||
2708 | return m; | |
2709 | } | |
2710 | ||
2711 | ||
b2b81a3f BM |
2712 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2713 | This assumes that the byte size is equal to the kind number for | |
2714 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2715 | |
2716 | match | |
636dff67 | 2717 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2718 | { |
2719 | match m; | |
5cf54585 | 2720 | int original_kind; |
6de9cd9a DN |
2721 | |
2722 | if (gfc_match_char ('*') != MATCH_YES) | |
2723 | return MATCH_NO; | |
2724 | ||
5cf54585 | 2725 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2726 | if (m != MATCH_YES) |
2727 | return MATCH_ERROR; | |
2728 | ||
e45b3c75 ES |
2729 | original_kind = ts->kind; |
2730 | ||
6de9cd9a | 2731 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2732 | if (ts->type == BT_COMPLEX) |
2733 | { | |
2734 | if (ts->kind % 2) | |
636dff67 SK |
2735 | { |
2736 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2737 | gfc_basic_typename (ts->type), original_kind); | |
2738 | return MATCH_ERROR; | |
2739 | } | |
e45b3c75 | 2740 | ts->kind /= 2; |
f4347334 ZG |
2741 | |
2742 | } | |
2743 | ||
203c7ebf | 2744 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2745 | ts->kind = 8; |
2746 | ||
2747 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2748 | { | |
2749 | if (ts->kind == 4) | |
2750 | { | |
203c7ebf | 2751 | if (flag_real4_kind == 8) |
f4347334 | 2752 | ts->kind = 8; |
203c7ebf | 2753 | if (flag_real4_kind == 10) |
f4347334 | 2754 | ts->kind = 10; |
203c7ebf | 2755 | if (flag_real4_kind == 16) |
f4347334 ZG |
2756 | ts->kind = 16; |
2757 | } | |
2758 | ||
2759 | if (ts->kind == 8) | |
2760 | { | |
203c7ebf | 2761 | if (flag_real8_kind == 4) |
f4347334 | 2762 | ts->kind = 4; |
203c7ebf | 2763 | if (flag_real8_kind == 10) |
f4347334 | 2764 | ts->kind = 10; |
203c7ebf | 2765 | if (flag_real8_kind == 16) |
f4347334 ZG |
2766 | ts->kind = 16; |
2767 | } | |
e45b3c75 | 2768 | } |
6de9cd9a | 2769 | |
e7a2d5fb | 2770 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2771 | { |
e45b3c75 | 2772 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2773 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2774 | return MATCH_ERROR; |
2775 | } | |
2776 | ||
70112e2a PT |
2777 | if (!gfc_notify_std (GFC_STD_GNU, |
2778 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2779 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2780 | return MATCH_ERROR; |
2781 | ||
6de9cd9a DN |
2782 | return MATCH_YES; |
2783 | } | |
2784 | ||
2785 | ||
2786 | /* Match a kind specification. Since kinds are generally optional, we | |
2787 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2788 | string is found, then we know we have an error. */ | |
2789 | ||
2790 | match | |
e2d29968 | 2791 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2792 | { |
e2d29968 | 2793 | locus where, loc; |
6de9cd9a DN |
2794 | gfc_expr *e; |
2795 | match m, n; | |
96ee3a4a | 2796 | char c; |
6de9cd9a DN |
2797 | |
2798 | m = MATCH_NO; | |
e2d29968 | 2799 | n = MATCH_YES; |
6de9cd9a | 2800 | e = NULL; |
5bab4c96 | 2801 | saved_kind_expr = NULL; |
6de9cd9a | 2802 | |
e2d29968 PT |
2803 | where = loc = gfc_current_locus; |
2804 | ||
2805 | if (kind_expr_only) | |
2806 | goto kind_expr; | |
6de9cd9a DN |
2807 | |
2808 | if (gfc_match_char ('(') == MATCH_NO) | |
2809 | return MATCH_NO; | |
2810 | ||
2811 | /* Also gobbles optional text. */ | |
2812 | if (gfc_match (" kind = ") == MATCH_YES) | |
2813 | m = MATCH_ERROR; | |
2814 | ||
e2d29968 PT |
2815 | loc = gfc_current_locus; |
2816 | ||
2817 | kind_expr: | |
5bab4c96 | 2818 | |
6de9cd9a | 2819 | n = gfc_match_init_expr (&e); |
e2d29968 | 2820 | |
5bab4c96 PT |
2821 | if (gfc_derived_parameter_expr (e)) |
2822 | { | |
2823 | ts->kind = 0; | |
2824 | saved_kind_expr = gfc_copy_expr (e); | |
2825 | goto close_brackets; | |
2826 | } | |
2827 | ||
6de9cd9a | 2828 | if (n != MATCH_YES) |
e2d29968 | 2829 | { |
1c8bcdf7 | 2830 | if (gfc_matching_function) |
e2d29968 | 2831 | { |
f5acf0f2 | 2832 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2833 | imported parameters and try again after the specification |
2834 | expressions..... */ | |
e2d29968 PT |
2835 | if (gfc_match_char (')') != MATCH_YES) |
2836 | { | |
2837 | gfc_error ("Missing right parenthesis at %C"); | |
2838 | m = MATCH_ERROR; | |
2839 | goto no_match; | |
2840 | } | |
2841 | ||
2842 | gfc_free_expr (e); | |
e2d29968 PT |
2843 | gfc_undo_symbols (); |
2844 | return MATCH_YES; | |
2845 | } | |
2846 | else | |
2847 | { | |
2848 | /* ....or else, the match is real. */ | |
2849 | if (n == MATCH_NO) | |
2850 | gfc_error ("Expected initialization expression at %C"); | |
2851 | if (n != MATCH_YES) | |
2852 | return MATCH_ERROR; | |
2853 | } | |
2854 | } | |
6de9cd9a DN |
2855 | |
2856 | if (e->rank != 0) | |
2857 | { | |
2858 | gfc_error ("Expected scalar initialization expression at %C"); | |
2859 | m = MATCH_ERROR; | |
2860 | goto no_match; | |
2861 | } | |
2862 | ||
51f03c6b | 2863 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 2864 | { |
6de9cd9a DN |
2865 | m = MATCH_ERROR; |
2866 | goto no_match; | |
2867 | } | |
2868 | ||
a8b3b0b6 CR |
2869 | /* Before throwing away the expression, let's see if we had a |
2870 | C interoperable kind (and store the fact). */ | |
2871 | if (e->ts.is_c_interop == 1) | |
2872 | { | |
eea58adb | 2873 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2874 | of the named constants from iso_c_binding. */ |
2875 | ts->is_c_interop = e->ts.is_iso_c; | |
2876 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
2877 | if (e->symtree) |
2878 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 2879 | } |
f5acf0f2 | 2880 | |
6de9cd9a DN |
2881 | gfc_free_expr (e); |
2882 | e = NULL; | |
2883 | ||
a8b3b0b6 CR |
2884 | /* Ignore errors to this point, if we've gotten here. This means |
2885 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2886 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2887 | { |
2888 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2889 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2890 | gfc_current_locus = where; |
2891 | return MATCH_ERROR; | |
6de9cd9a | 2892 | } |
96ee3a4a | 2893 | |
2ec855f1 TB |
2894 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2895 | if, e.g., c_double is used for COMPLEX as the standard | |
2896 | explicitly says that the kind type parameter for complex and real | |
2897 | variable is the same, i.e. c_float == c_float_complex. */ | |
2898 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2899 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2900 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2901 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2902 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2903 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2904 | |
5bab4c96 PT |
2905 | close_brackets: |
2906 | ||
96ee3a4a | 2907 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2908 | if ((c = gfc_next_ascii_char ()) != ')' |
2909 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2910 | { |
96ee3a4a TB |
2911 | if (ts->type == BT_CHARACTER) |
2912 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2913 | else | |
2914 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2915 | m = MATCH_ERROR; |
6de9cd9a | 2916 | } |
a8b3b0b6 CR |
2917 | else |
2918 | /* All tests passed. */ | |
2919 | m = MATCH_YES; | |
6de9cd9a | 2920 | |
a8b3b0b6 CR |
2921 | if(m == MATCH_ERROR) |
2922 | gfc_current_locus = where; | |
f4347334 | 2923 | |
203c7ebf | 2924 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2925 | ts->kind = 8; |
2926 | ||
2927 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2928 | { | |
2929 | if (ts->kind == 4) | |
2930 | { | |
203c7ebf | 2931 | if (flag_real4_kind == 8) |
f4347334 | 2932 | ts->kind = 8; |
203c7ebf | 2933 | if (flag_real4_kind == 10) |
f4347334 | 2934 | ts->kind = 10; |
203c7ebf | 2935 | if (flag_real4_kind == 16) |
f4347334 ZG |
2936 | ts->kind = 16; |
2937 | } | |
2938 | ||
2939 | if (ts->kind == 8) | |
2940 | { | |
203c7ebf | 2941 | if (flag_real8_kind == 4) |
f4347334 | 2942 | ts->kind = 4; |
203c7ebf | 2943 | if (flag_real8_kind == 10) |
f4347334 | 2944 | ts->kind = 10; |
203c7ebf | 2945 | if (flag_real8_kind == 16) |
f4347334 ZG |
2946 | ts->kind = 16; |
2947 | } | |
2948 | } | |
2949 | ||
a8b3b0b6 CR |
2950 | /* Return what we know from the test(s). */ |
2951 | return m; | |
6de9cd9a DN |
2952 | |
2953 | no_match: | |
2954 | gfc_free_expr (e); | |
63645982 | 2955 | gfc_current_locus = where; |
6de9cd9a DN |
2956 | return m; |
2957 | } | |
2958 | ||
2959 | ||
187de1ed FXC |
2960 | static match |
2961 | match_char_kind (int * kind, int * is_iso_c) | |
2962 | { | |
2963 | locus where; | |
2964 | gfc_expr *e; | |
2965 | match m, n; | |
51f03c6b | 2966 | bool fail; |
187de1ed FXC |
2967 | |
2968 | m = MATCH_NO; | |
2969 | e = NULL; | |
2970 | where = gfc_current_locus; | |
2971 | ||
2972 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2973 | |
1c8bcdf7 | 2974 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2975 | { |
1c8bcdf7 | 2976 | /* The expression might include use-associated or imported |
f5acf0f2 | 2977 | parameters and try again after the specification |
1c8bcdf7 | 2978 | expressions. */ |
96ee3a4a | 2979 | gfc_free_expr (e); |
96ee3a4a TB |
2980 | gfc_undo_symbols (); |
2981 | return MATCH_YES; | |
2982 | } | |
2983 | ||
187de1ed FXC |
2984 | if (n == MATCH_NO) |
2985 | gfc_error ("Expected initialization expression at %C"); | |
2986 | if (n != MATCH_YES) | |
2987 | return MATCH_ERROR; | |
2988 | ||
2989 | if (e->rank != 0) | |
2990 | { | |
2991 | gfc_error ("Expected scalar initialization expression at %C"); | |
2992 | m = MATCH_ERROR; | |
2993 | goto no_match; | |
2994 | } | |
2995 | ||
87f3a5cf PT |
2996 | if (gfc_derived_parameter_expr (e)) |
2997 | { | |
2998 | saved_kind_expr = e; | |
2999 | *kind = 0; | |
3000 | return MATCH_YES; | |
3001 | } | |
3002 | ||
51f03c6b | 3003 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 3004 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 3005 | if (fail) |
187de1ed | 3006 | { |
187de1ed FXC |
3007 | m = MATCH_ERROR; |
3008 | goto no_match; | |
3009 | } | |
3010 | ||
3011 | gfc_free_expr (e); | |
3012 | ||
3013 | /* Ignore errors to this point, if we've gotten here. This means | |
3014 | we ignore the m=MATCH_ERROR from above. */ | |
3015 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3016 | { | |
3017 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3018 | m = MATCH_ERROR; | |
3019 | } | |
3020 | else | |
3021 | /* All tests passed. */ | |
3022 | m = MATCH_YES; | |
3023 | ||
3024 | if (m == MATCH_ERROR) | |
3025 | gfc_current_locus = where; | |
f5acf0f2 | 3026 | |
187de1ed FXC |
3027 | /* Return what we know from the test(s). */ |
3028 | return m; | |
3029 | ||
3030 | no_match: | |
3031 | gfc_free_expr (e); | |
3032 | gfc_current_locus = where; | |
3033 | return m; | |
3034 | } | |
3035 | ||
8234e5e0 | 3036 | |
6de9cd9a DN |
3037 | /* Match the various kind/length specifications in a CHARACTER |
3038 | declaration. We don't return MATCH_NO. */ | |
3039 | ||
8234e5e0 SK |
3040 | match |
3041 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3042 | { |
187de1ed | 3043 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3044 | gfc_charlen *cl; |
3045 | gfc_expr *len; | |
3046 | match m; | |
e69afb29 | 3047 | bool deferred; |
187de1ed | 3048 | |
6de9cd9a DN |
3049 | len = NULL; |
3050 | seen_length = 0; | |
187de1ed FXC |
3051 | kind = 0; |
3052 | is_iso_c = 0; | |
e69afb29 | 3053 | deferred = false; |
6de9cd9a DN |
3054 | |
3055 | /* Try the old-style specification first. */ | |
3056 | old_char_selector = 0; | |
3057 | ||
2767f2cc | 3058 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3059 | if (m != MATCH_NO) |
3060 | { | |
3061 | if (m == MATCH_YES) | |
3062 | old_char_selector = 1; | |
3063 | seen_length = 1; | |
3064 | goto done; | |
3065 | } | |
3066 | ||
3067 | m = gfc_match_char ('('); | |
3068 | if (m != MATCH_YES) | |
3069 | { | |
a8b3b0b6 | 3070 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3071 | goto done; |
3072 | } | |
3073 | ||
a8b3b0b6 | 3074 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3075 | if (gfc_match (" kind =") == MATCH_YES) |
3076 | { | |
187de1ed | 3077 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3078 | |
6de9cd9a DN |
3079 | if (m == MATCH_ERROR) |
3080 | goto done; | |
3081 | if (m == MATCH_NO) | |
3082 | goto syntax; | |
3083 | ||
3084 | if (gfc_match (" , len =") == MATCH_NO) | |
3085 | goto rparen; | |
3086 | ||
e69afb29 | 3087 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3088 | if (m == MATCH_NO) |
3089 | goto syntax; | |
3090 | if (m == MATCH_ERROR) | |
3091 | goto done; | |
3092 | seen_length = 1; | |
3093 | ||
3094 | goto rparen; | |
3095 | } | |
3096 | ||
66e4ab31 | 3097 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3098 | if (gfc_match (" len =") == MATCH_YES) |
3099 | { | |
e69afb29 | 3100 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3101 | if (m == MATCH_NO) |
3102 | goto syntax; | |
3103 | if (m == MATCH_ERROR) | |
3104 | goto done; | |
3105 | seen_length = 1; | |
3106 | ||
3107 | if (gfc_match_char (')') == MATCH_YES) | |
3108 | goto done; | |
3109 | ||
3110 | if (gfc_match (" , kind =") != MATCH_YES) | |
3111 | goto syntax; | |
3112 | ||
187de1ed FXC |
3113 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3114 | goto done; | |
6de9cd9a DN |
3115 | |
3116 | goto rparen; | |
3117 | } | |
3118 | ||
66e4ab31 | 3119 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3120 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3121 | if (m == MATCH_NO) |
3122 | goto syntax; | |
3123 | if (m == MATCH_ERROR) | |
3124 | goto done; | |
3125 | seen_length = 1; | |
3126 | ||
3127 | m = gfc_match_char (')'); | |
3128 | if (m == MATCH_YES) | |
3129 | goto done; | |
3130 | ||
3131 | if (gfc_match_char (',') != MATCH_YES) | |
3132 | goto syntax; | |
3133 | ||
a8b3b0b6 | 3134 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3135 | |
187de1ed | 3136 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3137 | if (m == MATCH_ERROR) |
3138 | goto done; | |
3139 | if (m == MATCH_NO) | |
3140 | goto syntax; | |
3141 | ||
3142 | rparen: | |
3143 | /* Require a right-paren at this point. */ | |
3144 | m = gfc_match_char (')'); | |
3145 | if (m == MATCH_YES) | |
3146 | goto done; | |
3147 | ||
3148 | syntax: | |
3149 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3150 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3151 | gfc_free_expr (len); |
3152 | return m; | |
6de9cd9a DN |
3153 | |
3154 | done: | |
a99d95a2 PT |
3155 | /* Deal with character functions after USE and IMPORT statements. */ |
3156 | if (gfc_matching_function) | |
1c8bcdf7 | 3157 | { |
a99d95a2 | 3158 | gfc_free_expr (len); |
1c8bcdf7 PT |
3159 | gfc_undo_symbols (); |
3160 | return MATCH_YES; | |
3161 | } | |
3162 | ||
6de9cd9a DN |
3163 | if (m != MATCH_YES) |
3164 | { | |
3165 | gfc_free_expr (len); | |
3166 | return m; | |
3167 | } | |
3168 | ||
3169 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3170 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3171 | |
3172 | if (seen_length == 0) | |
f622221a | 3173 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3174 | else |
00df7c36 SK |
3175 | { |
3176 | /* If gfortran ends up here, then the len may be reducible to a | |
3177 | constant. Try to do that here. If it does not reduce, simply | |
3178 | assign len to the charlen. */ | |
3179 | if (len && len->expr_type != EXPR_CONSTANT) | |
3180 | { | |
3181 | gfc_expr *e; | |
3182 | e = gfc_copy_expr (len); | |
3183 | gfc_reduce_init_expr (e); | |
3184 | if (e->expr_type == EXPR_CONSTANT) | |
3185 | gfc_replace_expr (len, e); | |
3186 | else | |
3187 | gfc_free_expr (e); | |
3188 | cl->length = len; | |
3189 | } | |
3190 | else | |
3191 | cl->length = len; | |
3192 | } | |
6de9cd9a | 3193 | |
bc21d315 | 3194 | ts->u.cl = cl; |
187de1ed | 3195 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3196 | ts->deferred = deferred; |
6de9cd9a | 3197 | |
eea58adb | 3198 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3199 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3200 | if (kind != 0) |
eea58adb | 3201 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3202 | of the named constants from iso_c_binding. */ |
3203 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3204 | else if (len != NULL) |
187de1ed FXC |
3205 | /* Here, we might have parsed something such as: character(c_char) |
3206 | In this case, the parsing code above grabs the c_char when | |
3207 | looking for the length (line 1690, roughly). it's the last | |
3208 | testcase for parsing the kind params of a character variable. | |
3209 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3210 | could be an error. |
187de1ed FXC |
3211 | To see if the user used a C interop kind, test the expr |
3212 | of the so called length, and see if it's C interoperable. */ | |
3213 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3214 | |
6de9cd9a DN |
3215 | return MATCH_YES; |
3216 | } | |
3217 | ||
3218 | ||
f6288c24 FR |
3219 | /* Matches a RECORD declaration. */ |
3220 | ||
3221 | static match | |
e79e6763 | 3222 | match_record_decl (char *name) |
f6288c24 FR |
3223 | { |
3224 | locus old_loc; | |
3225 | old_loc = gfc_current_locus; | |
e79e6763 | 3226 | match m; |
f6288c24 | 3227 | |
e79e6763 FR |
3228 | m = gfc_match (" record /"); |
3229 | if (m == MATCH_YES) | |
f6288c24 | 3230 | { |
f6d17ecd | 3231 | if (!flag_dec_structure) |
f6288c24 FR |
3232 | { |
3233 | gfc_current_locus = old_loc; | |
3234 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3235 | "-fdec-structure"); | |
3236 | return MATCH_ERROR; | |
3237 | } | |
e79e6763 FR |
3238 | m = gfc_match (" %n/", name); |
3239 | if (m == MATCH_YES) | |
3240 | return MATCH_YES; | |
f6288c24 FR |
3241 | } |
3242 | ||
e79e6763 | 3243 | gfc_current_locus = old_loc; |
f6d17ecd | 3244 | if (flag_dec_structure |
e79e6763 FR |
3245 | && (gfc_match (" record% ") == MATCH_YES |
3246 | || gfc_match (" record%t") == MATCH_YES)) | |
3247 | gfc_error ("Structure name expected after RECORD at %C"); | |
3248 | if (m == MATCH_NO) | |
f6288c24 | 3249 | return MATCH_NO; |
e79e6763 FR |
3250 | |
3251 | return MATCH_ERROR; | |
f6288c24 FR |
3252 | } |
3253 | ||
5bab4c96 PT |
3254 | |
3255 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3256 | of expressions to substitute into the possibly parameterized expression | |
3257 | 'e'. Using a list is inefficient but should not be too bad since the | |
3258 | number of type parameters is not likely to be large. */ | |
3259 | static bool | |
3260 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3261 | int* f) | |
3262 | { | |
3263 | gfc_actual_arglist *param; | |
3264 | gfc_expr *copy; | |
3265 | ||
3266 | if (e->expr_type != EXPR_VARIABLE) | |
3267 | return false; | |
3268 | ||
3269 | gcc_assert (e->symtree); | |
3270 | if (e->symtree->n.sym->attr.pdt_kind | |
3271 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3272 | { | |
3273 | for (param = type_param_spec_list; param; param = param->next) | |
3274 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3275 | break; | |
3276 | ||
3277 | if (param) | |
3278 | { | |
3279 | copy = gfc_copy_expr (param->expr); | |
3280 | *e = *copy; | |
3281 | free (copy); | |
3282 | } | |
3283 | } | |
3284 | ||
3285 | return false; | |
3286 | } | |
3287 | ||
3288 | ||
3289 | bool | |
3290 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3291 | { | |
3292 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3293 | } | |
3294 | ||
3295 | ||
3296 | bool | |
3297 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3298 | { | |
3299 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3300 | type_param_spec_list = param_list; | |
3301 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3302 | type_param_spec_list = NULL; | |
3303 | type_param_spec_list = old_param_spec_list; | |
3304 | } | |
3305 | ||
3306 | /* Determines the instance of a parameterized derived type to be used by | |
3307 | matching determining the values of the kind parameters and using them | |
3308 | in the name of the instance. If the instance exists, it is used, otherwise | |
3309 | a new derived type is created. */ | |
3310 | match | |
3311 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3312 | gfc_actual_arglist **ext_param_list) | |
3313 | { | |
3314 | /* The PDT template symbol. */ | |
3315 | gfc_symbol *pdt = *sym; | |
3316 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3317 | gfc_symbol *param; | |
3318 | /* The hoped for instance of the PDT. */ | |
3319 | gfc_symbol *instance; | |
3320 | /* The list of parameters appearing in the PDT declaration. */ | |
3321 | gfc_formal_arglist *type_param_name_list; | |
3322 | /* Used to store the parameter specification list during recursive calls. */ | |
3323 | gfc_actual_arglist *old_param_spec_list; | |
3324 | /* Pointers to the parameter specification being used. */ | |
3325 | gfc_actual_arglist *actual_param; | |
3326 | gfc_actual_arglist *tail = NULL; | |
3327 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3328 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3329 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3330 | ||
3331 | bool name_seen = (param_list == NULL); | |
3332 | bool assumed_seen = false; | |
3333 | bool deferred_seen = false; | |
3334 | bool spec_error = false; | |
3335 | int kind_value, i; | |
3336 | gfc_expr *kind_expr; | |
3337 | gfc_component *c1, *c2; | |
3338 | match m; | |
3339 | ||
3340 | type_param_spec_list = NULL; | |
3341 | ||
3342 | type_param_name_list = pdt->formal; | |
3343 | actual_param = param_list; | |
3344 | sprintf (name, "Pdt%s", pdt->name); | |
3345 | ||
3346 | /* Run through the parameter name list and pick up the actual | |
3347 | parameter values or use the default values in the PDT declaration. */ | |
3348 | for (; type_param_name_list; | |
3349 | type_param_name_list = type_param_name_list->next) | |
3350 | { | |
3351 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3352 | { | |
3353 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3354 | spec_error = deferred_seen; | |
3355 | else | |
3356 | spec_error = assumed_seen; | |
3357 | ||
3358 | if (spec_error) | |
3359 | { | |
3360 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3361 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3362 | goto error_return; |
5bab4c96 PT |
3363 | } |
3364 | } | |
3365 | ||
3366 | if (actual_param && actual_param->name) | |
3367 | name_seen = true; | |
3368 | param = type_param_name_list->sym; | |
3369 | ||
276515e6 PT |
3370 | if (!param || !param->name) |
3371 | continue; | |
3372 | ||
18a4e7e3 | 3373 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3374 | /* An error should already have been thrown in resolve.c |
3375 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3376 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3377 | goto error_return; |
18a4e7e3 | 3378 | |
5bab4c96 PT |
3379 | kind_expr = NULL; |
3380 | if (!name_seen) | |
3381 | { | |
18a4e7e3 PT |
3382 | if (!actual_param && !(c1 && c1->initializer)) |
3383 | { | |
3384 | gfc_error ("The type parameter spec list at %C does not contain " | |
3385 | "enough parameter expressions"); | |
3386 | goto error_return; | |
3387 | } | |
3388 | else if (!actual_param && c1 && c1->initializer) | |
3389 | kind_expr = gfc_copy_expr (c1->initializer); | |
3390 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3391 | kind_expr = gfc_copy_expr (actual_param->expr); |
3392 | } | |
3393 | else | |
3394 | { | |
3395 | actual_param = param_list; | |
3396 | for (;actual_param; actual_param = actual_param->next) | |
3397 | if (actual_param->name | |
3398 | && strcmp (actual_param->name, param->name) == 0) | |
3399 | break; | |
3400 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3401 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3402 | else | |
3403 | { | |
62d3c075 PT |
3404 | if (c1->initializer) |
3405 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3406 | else if (!(actual_param && param->attr.pdt_len)) |
3407 | { | |
71a21b9e | 3408 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3409 | "have a default value", param->name); |
18a4e7e3 | 3410 | goto error_return; |
5bab4c96 PT |
3411 | } |
3412 | } | |
3413 | } | |
3414 | ||
3415 | /* Store the current parameter expressions in a temporary actual | |
3416 | arglist 'list' so that they can be substituted in the corresponding | |
3417 | expressions in the PDT instance. */ | |
3418 | if (type_param_spec_list == NULL) | |
3419 | { | |
3420 | type_param_spec_list = gfc_get_actual_arglist (); | |
3421 | tail = type_param_spec_list; | |
3422 | } | |
3423 | else | |
3424 | { | |
3425 | tail->next = gfc_get_actual_arglist (); | |
3426 | tail = tail->next; | |
3427 | } | |
3428 | tail->name = param->name; | |
3429 | ||
3430 | if (kind_expr) | |
3431 | { | |
87f3a5cf PT |
3432 | /* Try simplification even for LEN expressions. */ |
3433 | gfc_resolve_expr (kind_expr); | |
3434 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3435 | /* Variable expressions seem to default to BT_PROCEDURE. |
3436 | TODO find out why this is and fix it. */ | |
3437 | if (kind_expr->ts.type != BT_INTEGER | |
3438 | && kind_expr->ts.type != BT_PROCEDURE) | |
3439 | { | |
3440 | gfc_error ("The parameter expression at %C must be of " | |
3441 | "INTEGER type and not %s type", | |
3442 | gfc_basic_typename (kind_expr->ts.type)); | |
3443 | goto error_return; | |
3444 | } | |
3445 | ||
5bab4c96 | 3446 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3447 | } |
3448 | ||
3449 | if (actual_param) | |
3450 | tail->spec_type = actual_param->spec_type; | |
3451 | ||
3452 | if (!param->attr.pdt_kind) | |
3453 | { | |
18a4e7e3 | 3454 | if (!name_seen && actual_param) |
5bab4c96 PT |
3455 | actual_param = actual_param->next; |
3456 | if (kind_expr) | |
3457 | { | |
3458 | gfc_free_expr (kind_expr); | |
3459 | kind_expr = NULL; | |
3460 | } | |
3461 | continue; | |
3462 | } | |
3463 | ||
3464 | if (actual_param | |
3465 | && (actual_param->spec_type == SPEC_ASSUMED | |
3466 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3467 | { | |
71a21b9e | 3468 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3469 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3470 | goto error_return; |
5bab4c96 PT |
3471 | } |
3472 | ||
3473 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3474 | { | |
71a21b9e | 3475 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3476 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3477 | goto error_return; |
5bab4c96 PT |
3478 | } |
3479 | ||
3480 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3481 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3482 | |
3483 | if (!name_seen && actual_param) | |
3484 | actual_param = actual_param->next; | |
3485 | gfc_free_expr (kind_expr); | |
3486 | } | |
3487 | ||
18a4e7e3 PT |
3488 | if (!name_seen && actual_param) |
3489 | { | |
3490 | gfc_error ("The type parameter spec list at %C contains too many " | |
3491 | "parameter expressions"); | |
3492 | goto error_return; | |
3493 | } | |
3494 | ||
5bab4c96 PT |
3495 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3496 | build it, using 'pdt' as a template. */ | |
3497 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3498 | { | |
3499 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3500 | goto error_return; |
5bab4c96 PT |
3501 | } |
3502 | ||
3503 | m = MATCH_YES; | |
3504 | ||
3505 | if (instance->attr.flavor == FL_DERIVED | |
3506 | && instance->attr.pdt_type) | |
3507 | { | |
3508 | instance->refs++; | |
3509 | if (ext_param_list) | |
3510 | *ext_param_list = type_param_spec_list; | |
3511 | *sym = instance; | |
3512 | gfc_commit_symbols (); | |
3513 | return m; | |
3514 | } | |
3515 | ||
3516 | /* Start building the new instance of the parameterized type. */ | |
3517 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3518 | instance->attr.pdt_template = 0; | |
3519 | instance->attr.pdt_type = 1; | |
3520 | instance->declared_at = gfc_current_locus; | |
3521 | ||
3522 | /* Add the components, replacing the parameters in all expressions | |
3523 | with the expressions for their values in 'type_param_spec_list'. */ | |
3524 | c1 = pdt->components; | |
3525 | tail = type_param_spec_list; | |
3526 | for (; c1; c1 = c1->next) | |
3527 | { | |
3528 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3529 | |
5bab4c96 PT |
3530 | c2->ts = c1->ts; |
3531 | c2->attr = c1->attr; | |
3532 | ||
276515e6 PT |
3533 | /* The order of declaration of the type_specs might not be the |
3534 | same as that of the components. */ | |
3535 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3536 | { | |
3537 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3538 | if (strcmp (c1->name, tail->name) == 0) | |
3539 | break; | |
3540 | } | |
3541 | ||
5bab4c96 PT |
3542 | /* Deal with type extension by recursively calling this function |
3543 | to obtain the instance of the extended type. */ | |
3544 | if (gfc_current_state () != COMP_DERIVED | |
3545 | && c1 == pdt->components | |
3546 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3547 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3548 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3549 | { | |
3550 | gfc_formal_arglist *f; | |
3551 | ||
3552 | old_param_spec_list = type_param_spec_list; | |
3553 | ||
3554 | /* Obtain a spec list appropriate to the extended type..*/ | |
3555 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3556 | type_param_spec_list = actual_param; | |
3557 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3558 | actual_param = actual_param->next; | |
3559 | if (actual_param) | |
3560 | { | |
3561 | gfc_free_actual_arglist (actual_param->next); | |
3562 | actual_param->next = NULL; | |
3563 | } | |
3564 | ||
3565 | /* Now obtain the PDT instance for the extended type. */ | |
3566 | c2->param_list = type_param_spec_list; | |
3567 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3568 | NULL); | |
3569 | type_param_spec_list = old_param_spec_list; | |
3570 | ||
3571 | c2->ts.u.derived->refs++; | |
3572 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3573 | ||
3574 | /* Set extension level. */ | |
3575 | if (c2->ts.u.derived->attr.extension == 255) | |
3576 | { | |
3577 | /* Since the extension field is 8 bit wide, we can only have | |
3578 | up to 255 extension levels. */ | |
3579 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3580 | c2->ts.u.derived->name, | |
3581 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3582 | goto error_return; |
5bab4c96 PT |
3583 | } |
3584 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3585 | ||
5bab4c96 PT |
3586 | continue; |
3587 | } | |
3588 | ||
3589 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3590 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3591 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3592 | { |
3593 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3594 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3595 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3596 | gfc_extract_int (e, &c2->ts.kind); |
3597 | gfc_free_expr (e); | |
18a4e7e3 PT |
3598 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3599 | { | |
3600 | gfc_error ("Kind %d not supported for type %s at %C", | |
3601 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3602 | goto error_return; | |
3603 | } | |
5bab4c96 PT |
3604 | } |
3605 | ||
3606 | /* Similarly, set the string length if parameterized. */ | |
3607 | if (c1->ts.type == BT_CHARACTER | |
3608 | && c1->ts.u.cl->length | |
3609 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3610 | { | |
3611 | gfc_expr *e; | |
3612 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3613 | gfc_insert_kind_parameter_exprs (e); | |
3614 | gfc_simplify_expr (e, 1); | |
3615 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3616 | c2->ts.u.cl->length = e; | |
3617 | c2->attr.pdt_string = 1; | |
3618 | } | |
3619 | ||
3620 | /* Set up either the KIND/LEN initializer, if constant, | |
3621 | or the parameterized expression. Use the template | |
3622 | initializer if one is not already set in this instance. */ | |
3623 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3624 | { | |
3625 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3626 | c2->initializer = gfc_copy_expr (tail->expr); | |
3627 | else if (tail && tail->expr) | |
3628 | { | |
3629 | c2->param_list = gfc_get_actual_arglist (); | |
3630 | c2->param_list->name = tail->name; | |
3631 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3632 | c2->param_list->next = NULL; | |
3633 | } | |
3634 | ||
3635 | if (!c2->initializer && c1->initializer) | |
3636 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3637 | } |
3638 | ||
3639 | /* Copy the array spec. */ | |
3640 | c2->as = gfc_copy_array_spec (c1->as); | |
3641 | if (c1->ts.type == BT_CLASS) | |
3642 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3643 | ||
3644 | /* Determine if an array spec is parameterized. If so, substitute | |
3645 | in the parameter expressions for the bounds and set the pdt_array | |
3646 | attribute. Notice that this attribute must be unconditionally set | |
3647 | if this is an array of parameterized character length. */ | |
3648 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3649 | { | |
3650 | bool pdt_array = false; | |
3651 | ||
3652 | /* Are the bounds of the array parameterized? */ | |
3653 | for (i = 0; i < c1->as->rank; i++) | |
3654 | { | |
3655 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3656 | pdt_array = true; | |
3657 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3658 | pdt_array = true; | |
3659 | } | |
3660 | ||
3661 | /* If they are, free the expressions for the bounds and | |
3662 | replace them with the template expressions with substitute | |
3663 | values. */ | |
3664 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3665 | { | |
3666 | gfc_expr *e; | |
3667 | e = gfc_copy_expr (c1->as->lower[i]); | |
3668 | gfc_insert_kind_parameter_exprs (e); | |
3669 | gfc_simplify_expr (e, 1); | |
3670 | gfc_free_expr (c2->as->lower[i]); | |
3671 | c2->as->lower[i] = e; | |
3672 | e = gfc_copy_expr (c1->as->upper[i]); | |
3673 | gfc_insert_kind_parameter_exprs (e); | |
3674 | gfc_simplify_expr (e, 1); | |
3675 | gfc_free_expr (c2->as->upper[i]); | |
3676 | c2->as->upper[i] = e; | |
3677 | } | |
3678 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3679 | if (c1->initializer) |
3680 | { | |
3681 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3682 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3683 | gfc_simplify_expr (c2->initializer, 1); | |
3684 | } | |
5bab4c96 PT |
3685 | } |
3686 | ||
3687 | /* Recurse into this function for PDT components. */ | |
3688 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3689 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3690 | { | |
3691 | gfc_actual_arglist *params; | |
3692 | /* The component in the template has a list of specification | |
3693 | expressions derived from its declaration. */ | |
3694 | params = gfc_copy_actual_arglist (c1->param_list); | |
3695 | actual_param = params; | |
3696 | /* Substitute the template parameters with the expressions | |
3697 | from the specification list. */ | |
3698 | for (;actual_param; actual_param = actual_param->next) | |
3699 | gfc_insert_parameter_exprs (actual_param->expr, | |
3700 | type_param_spec_list); | |
3701 | ||
3702 | /* Now obtain the PDT instance for the component. */ | |
3703 | old_param_spec_list = type_param_spec_list; | |
3704 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3705 | type_param_spec_list = old_param_spec_list; | |
3706 | ||
3707 | c2->param_list = params; | |
2fcd5884 PT |
3708 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3709 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3710 | ||
3711 | if (c2->attr.allocatable) | |
3712 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3713 | } |
3714 | } | |
3715 | ||
3716 | gfc_commit_symbol (instance); | |
3717 | if (ext_param_list) | |
3718 | *ext_param_list = type_param_spec_list; | |
3719 | *sym = instance; | |
3720 | return m; | |
18a4e7e3 PT |
3721 | |
3722 | error_return: | |
3723 | gfc_free_actual_arglist (type_param_spec_list); | |
3724 | return MATCH_ERROR; | |
5bab4c96 PT |
3725 | } |
3726 | ||
3727 | ||
e74f1cc8 JW |
3728 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3729 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3730 | IMPLICIT statements. |
3731 | ||
d51347f9 | 3732 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3733 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3734 | statement correctly. */ |
3735 | ||
e2d29968 | 3736 | match |
e74f1cc8 | 3737 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3738 | { |
3739 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3740 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3741 | match m; |
8fc541d3 | 3742 | char c; |
0fb56814 | 3743 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3744 | const char *dt_name; |
6de9cd9a | 3745 | |
5bab4c96 PT |
3746 | decl_type_param_list = NULL; |
3747 | ||
1c8bcdf7 PT |
3748 | /* A belt and braces check that the typespec is correctly being treated |
3749 | as a deferred characteristic association. */ | |
3750 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
3751 | && (gfc_current_block ()->result->ts.kind == -1) |
3752 | && (ts->kind == -1); | |
6de9cd9a | 3753 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
3754 | if (seen_deferred_kind) |
3755 | ts->kind = -1; | |
6de9cd9a | 3756 | |
a8b3b0b6 | 3757 | /* Clear the current binding label, in case one is given. */ |
62603fae | 3758 | curr_binding_label = NULL; |
a8b3b0b6 | 3759 | |
5f700e6d AL |
3760 | if (gfc_match (" byte") == MATCH_YES) |
3761 | { | |
524af0d6 | 3762 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
3763 | return MATCH_ERROR; |
3764 | ||
3765 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3766 | { | |
3767 | gfc_error ("BYTE type used at %C " | |
3768 | "is not available on the target machine"); | |
3769 | return MATCH_ERROR; | |
3770 | } | |
d51347f9 | 3771 | |
5f700e6d AL |
3772 | ts->type = BT_INTEGER; |
3773 | ts->kind = 1; | |
3774 | return MATCH_YES; | |
3775 | } | |
3776 | ||
0fb56814 | 3777 | |
45a69325 | 3778 | m = gfc_match (" type ("); |
0fb56814 | 3779 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3780 | if (matched_type) |
3781 | { | |
3782 | gfc_gobble_whitespace (); | |
3783 | if (gfc_peek_ascii_char () == '*') | |
3784 | { | |
3785 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3786 | return m; | |
f6288c24 | 3787 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3788 | { |
3789 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3790 | return MATCH_ERROR; | |
3791 | } | |
524af0d6 JB |
3792 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
3793 | "at %C")) | |
45a69325 TB |
3794 | return MATCH_ERROR; |
3795 | ts->type = BT_ASSUMED; | |
3796 | return MATCH_YES; | |
3797 | } | |
3798 | ||
3799 | m = gfc_match ("%n", name); | |
3800 | matched_type = (m == MATCH_YES); | |
3801 | } | |
3802 | ||
0fb56814 TB |
3803 | if ((matched_type && strcmp ("integer", name) == 0) |
3804 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3805 | { |
3806 | ts->type = BT_INTEGER; | |
9d64df18 | 3807 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3808 | goto get_kind; |
3809 | } | |
3810 | ||
0fb56814 TB |
3811 | if ((matched_type && strcmp ("character", name) == 0) |
3812 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 3813 | { |
0fb56814 | 3814 | if (matched_type |
524af0d6 JB |
3815 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3816 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3817 | return MATCH_ERROR; |
3818 | ||
6de9cd9a | 3819 | ts->type = BT_CHARACTER; |
e5ddaa24 | 3820 | if (implicit_flag == 0) |
0fb56814 | 3821 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 3822 | else |
0fb56814 TB |
3823 | m = MATCH_YES; |
3824 | ||
3825 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3826 | m = MATCH_ERROR; | |
3827 | ||
3828 | return m; | |
6de9cd9a DN |
3829 | } |
3830 | ||
0fb56814 TB |
3831 | if ((matched_type && strcmp ("real", name) == 0) |
3832 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
3833 | { |
3834 | ts->type = BT_REAL; | |
9d64df18 | 3835 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
3836 | goto get_kind; |
3837 | } | |
3838 | ||
0fb56814 TB |
3839 | if ((matched_type |
3840 | && (strcmp ("doubleprecision", name) == 0 | |
3841 | || (strcmp ("double", name) == 0 | |
3842 | && gfc_match (" precision") == MATCH_YES))) | |
3843 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 3844 | { |
0fb56814 | 3845 | if (matched_type |
524af0d6 JB |
3846 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3847 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3848 | return MATCH_ERROR; |
3849 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3850 | return MATCH_ERROR; | |
3851 | ||
6de9cd9a | 3852 | ts->type = BT_REAL; |
9d64df18 | 3853 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3854 | return MATCH_YES; |
3855 | } | |
3856 | ||
0fb56814 TB |
3857 | if ((matched_type && strcmp ("complex", name) == 0) |
3858 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
3859 | { |
3860 | ts->type = BT_COMPLEX; | |
9d64df18 | 3861 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
3862 | goto get_kind; |
3863 | } | |
3864 | ||
0fb56814 TB |
3865 | if ((matched_type |
3866 | && (strcmp ("doublecomplex", name) == 0 | |
3867 | || (strcmp ("double", name) == 0 | |
3868 | && gfc_match (" complex") == MATCH_YES))) | |
3869 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 3870 | { |
524af0d6 | 3871 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
3872 | return MATCH_ERROR; |
3873 | ||
3874 | if (matched_type | |
524af0d6 JB |
3875 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3876 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3877 | return MATCH_ERROR; |
3878 | ||
3879 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
3880 | return MATCH_ERROR; |
3881 | ||
6de9cd9a | 3882 | ts->type = BT_COMPLEX; |
9d64df18 | 3883 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3884 | return MATCH_YES; |
3885 | } | |
3886 | ||
0fb56814 TB |
3887 | if ((matched_type && strcmp ("logical", name) == 0) |
3888 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
3889 | { |
3890 | ts->type = BT_LOGICAL; | |
9d64df18 | 3891 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
3892 | goto get_kind; |
3893 | } | |
3894 | ||
0fb56814 | 3895 | if (matched_type) |
5bab4c96 PT |
3896 | { |
3897 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
3898 | if (m == MATCH_ERROR) | |
3899 | return m; | |
3900 | ||
0fb56814 | 3901 | m = gfc_match_char (')'); |
5bab4c96 | 3902 | } |
0fb56814 | 3903 | |
f6288c24 FR |
3904 | if (m != MATCH_YES) |
3905 | m = match_record_decl (name); | |
3906 | ||
3907 | if (matched_type || m == MATCH_YES) | |
3908 | { | |
3909 | ts->type = BT_DERIVED; | |
3910 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3911 | * don't need all the extra derived-type stuff for structures. */ | |
3912 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
3913 | { | |
2f029c08 | 3914 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
3915 | return MATCH_ERROR; |
3916 | } | |
5bab4c96 PT |
3917 | |
3918 | if (sym && sym->attr.flavor == FL_DERIVED | |
3919 | && sym->attr.pdt_template | |
3920 | && gfc_current_state () != COMP_DERIVED) | |
3921 | { | |
3922 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
3923 | if (m != MATCH_YES) | |
3924 | return m; | |
3925 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
3926 | ts->u.derived = sym; | |
3927 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
3928 | } | |
3929 | ||
f6288c24 FR |
3930 | if (sym && sym->attr.flavor == FL_STRUCT) |
3931 | { | |
3932 | ts->u.derived = sym; | |
3933 | return MATCH_YES; | |
3934 | } | |
3935 | /* Actually a derived type. */ | |
3936 | } | |
3937 | ||
cf2b3c22 | 3938 | else |
727e8544 | 3939 | { |
f6288c24 | 3940 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 3941 | structure declaration. */ |
f6d17ecd | 3942 | if (flag_dec_structure |
e79e6763 FR |
3943 | && (gfc_current_state () == COMP_STRUCTURE |
3944 | || gfc_current_state () == COMP_MAP)) | |
3945 | { | |
3946 | m = gfc_match (" structure"); | |
3947 | if (m == MATCH_YES) | |
3948 | { | |
3949 | m = gfc_match_structure_decl (); | |
3950 | if (m == MATCH_YES) | |
3951 | { | |
3952 | /* gfc_new_block is updated by match_structure_decl. */ | |
3953 | ts->type = BT_DERIVED; | |
3954 | ts->u.derived = gfc_new_block; | |
3955 | return MATCH_YES; | |
3956 | } | |
3957 | } | |
3958 | if (m == MATCH_ERROR) | |
3959 | return MATCH_ERROR; | |
3960 | } | |
f6288c24 | 3961 | |
528622fd JW |
3962 | /* Match CLASS declarations. */ |
3963 | m = gfc_match (" class ( * )"); | |
3964 | if (m == MATCH_ERROR) | |
3965 | return MATCH_ERROR; | |
3966 | else if (m == MATCH_YES) | |
3967 | { | |
8b704316 PT |
3968 | gfc_symbol *upe; |
3969 | gfc_symtree *st; | |
3970 | ts->type = BT_CLASS; | |
f5acf0f2 | 3971 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
3972 | if (upe == NULL) |
3973 | { | |
f5acf0f2 PT |
3974 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
3975 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
3976 | st->n.sym = upe; |
3977 | gfc_set_sym_referenced (upe); | |
3978 | upe->refs++; | |
3979 | upe->ts.type = BT_VOID; | |
3980 | upe->attr.unlimited_polymorphic = 1; | |
3981 | /* This is essential to force the construction of | |
3982 | unlimited polymorphic component class containers. */ | |
3983 | upe->attr.zero_comp = 1; | |
70112e2a | 3984 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 3985 | &gfc_current_locus)) |
b93d8a3f JW |
3986 | return MATCH_ERROR; |
3987 | } | |
8b704316 PT |
3988 | else |
3989 | { | |
b93d8a3f | 3990 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
3991 | st->n.sym = upe; |
3992 | upe->refs++; | |
3993 | } | |
3994 | ts->u.derived = upe; | |
3995 | return m; | |
3996 | } | |
528622fd | 3997 | |
5bab4c96 PT |
3998 | m = gfc_match (" class ("); |
3999 | ||
4000 | if (m == MATCH_YES) | |
4001 | m = gfc_match ("%n", name); | |
4002 | else | |
4003 | return m; | |
4004 | ||
727e8544 JW |
4005 | if (m != MATCH_YES) |
4006 | return m; | |
cf2b3c22 | 4007 | ts->type = BT_CLASS; |
727e8544 | 4008 | |
524af0d6 | 4009 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 4010 | return MATCH_ERROR; |
5bab4c96 PT |
4011 | |
4012 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4013 | if (m == MATCH_ERROR) | |
4014 | return m; | |
4015 | ||
4016 | m = gfc_match_char (')'); | |
4017 | if (m != MATCH_YES) | |
4018 | return m; | |
727e8544 | 4019 | } |
6de9cd9a | 4020 | |
1c8bcdf7 PT |
4021 | /* Defer association of the derived type until the end of the |
4022 | specification block. However, if the derived type can be | |
f5acf0f2 | 4023 | found, add it to the typespec. */ |
1c8bcdf7 | 4024 | if (gfc_matching_function) |
e2d29968 | 4025 | { |
bc21d315 | 4026 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4027 | if (gfc_current_state () != COMP_INTERFACE |
4028 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4029 | { |
4030 | sym = gfc_find_dt_in_generic (sym); | |
4031 | ts->u.derived = sym; | |
4032 | } | |
e2d29968 PT |
4033 | return MATCH_YES; |
4034 | } | |
4035 | ||
4036 | /* Search for the name but allow the components to be defined later. If | |
4037 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4038 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4039 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4040 | symtree with the all lower-case name contains the associated |
4041 | generic function. */ | |
f6288c24 | 4042 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4043 | sym = NULL; |
c3f34952 TB |
4044 | dt_sym = NULL; |
4045 | if (ts->kind != -1) | |
6de9cd9a | 4046 | { |
c3f34952 TB |
4047 | gfc_get_ha_symbol (name, &sym); |
4048 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4049 | { | |
c4100eae | 4050 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4051 | return MATCH_ERROR; |
4052 | } | |
4053 | if (sym->generic && !dt_sym) | |
4054 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4055 | |
4056 | /* Host associated PDTs can get confused with their constructors | |
4057 | because they ar instantiated in the template's namespace. */ | |
4058 | if (!dt_sym) | |
4059 | { | |
4060 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4061 | { | |
4062 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4063 | return MATCH_ERROR; | |
4064 | } | |
4065 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4066 | dt_sym = NULL; | |
4067 | } | |
6de9cd9a | 4068 | } |
e2d29968 PT |
4069 | else if (ts->kind == -1) |
4070 | { | |
1c8bcdf7 PT |
4071 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4072 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4073 | gfc_find_symbol (name, NULL, iface, &sym); |
4074 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4075 | { |
c4100eae | 4076 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4077 | return MATCH_ERROR; |
4078 | } | |
c3f34952 TB |
4079 | if (sym && sym->generic && !dt_sym) |
4080 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4081 | |
1c8bcdf7 | 4082 | ts->kind = 0; |
e2d29968 PT |
4083 | if (sym == NULL) |
4084 | return MATCH_NO; | |
4085 | } | |
6de9cd9a | 4086 | |
f6288c24 | 4087 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4088 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4089 | || sym->attr.subroutine) | |
4090 | { | |
fea70c99 MLI |
4091 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4092 | "entity at %L, which has the same name", name, | |
4093 | &sym->declared_at); | |
c3f34952 TB |
4094 | return MATCH_ERROR; |
4095 | } | |
6de9cd9a | 4096 | |
5bab4c96 PT |
4097 | if (sym && sym->attr.flavor == FL_DERIVED |
4098 | && sym->attr.pdt_template | |
4099 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4100 | { |
4101 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4102 | if (m != MATCH_YES) | |
4103 | return m; | |
4104 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4105 | ts->u.derived = sym; | |
4106 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4107 | } | |
5bab4c96 | 4108 | |
44c57c2f | 4109 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4110 | gfc_set_sym_referenced (sym); |
c3f34952 | 4111 | if (!sym->attr.generic |
524af0d6 | 4112 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4113 | return MATCH_ERROR; |
4114 | ||
4115 | if (!sym->attr.function | |
524af0d6 | 4116 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4117 | return MATCH_ERROR; |
4118 | ||
5bab4c96 PT |
4119 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4120 | && dt_sym->attr.pdt_template | |
4121 | && gfc_current_state () != COMP_DERIVED) | |
4122 | { | |
4123 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4124 | if (m != MATCH_YES) | |
4125 | return m; | |
4126 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4127 | } | |
4128 | ||
c3f34952 TB |
4129 | if (!dt_sym) |
4130 | { | |
4131 | gfc_interface *intr, *head; | |
4132 | ||
4133 | /* Use upper case to save the actual derived-type symbol. */ | |
4134 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4135 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4136 | head = sym->generic; |
4137 | intr = gfc_get_interface (); | |
4138 | intr->sym = dt_sym; | |
4139 | intr->where = gfc_current_locus; | |
4140 | intr->next = head; | |
4141 | sym->generic = intr; | |
4142 | sym->attr.if_source = IFSRC_DECL; | |
4143 | } | |
44c57c2f MM |
4144 | else |
4145 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4146 | |
4147 | gfc_set_sym_referenced (dt_sym); | |
4148 | ||
f6288c24 | 4149 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4150 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4151 | return MATCH_ERROR; |
4152 | ||
4153 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4154 | |
4155 | return MATCH_YES; | |
4156 | ||
4157 | get_kind: | |
0fb56814 | 4158 | if (matched_type |
524af0d6 JB |
4159 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4160 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4161 | return MATCH_ERROR; |
4162 | ||
6de9cd9a DN |
4163 | /* For all types except double, derived and character, look for an |
4164 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4165 | if (implicit_flag == 1) |
0fb56814 TB |
4166 | { |
4167 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4168 | return MATCH_ERROR; | |
4169 | ||
4170 | return MATCH_YES; | |
4171 | } | |
6de9cd9a | 4172 | |
0ff0dfbf TS |
4173 | if (gfc_current_form == FORM_FREE) |
4174 | { | |
0b3624f6 SK |
4175 | c = gfc_peek_ascii_char (); |
4176 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4177 | && c != ':' && c != ',') |
0fb56814 TB |
4178 | { |
4179 | if (matched_type && c == ')') | |
4180 | { | |
4181 | gfc_next_ascii_char (); | |
4182 | return MATCH_YES; | |
4183 | } | |
4184 | return MATCH_NO; | |
4185 | } | |
0ff0dfbf TS |
4186 | } |
4187 | ||
e2d29968 | 4188 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4189 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4190 | { |
4191 | m = gfc_match_old_kind_spec (ts); | |
4192 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4193 | return MATCH_ERROR; | |
4194 | } | |
6de9cd9a | 4195 | |
0fb56814 TB |
4196 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4197 | return MATCH_ERROR; | |
4198 | ||
1c8bcdf7 PT |
4199 | /* Defer association of the KIND expression of function results |
4200 | until after USE and IMPORT statements. */ | |
4201 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4202 | || gfc_matching_function) | |
4203 | return MATCH_YES; | |
4204 | ||
6de9cd9a DN |
4205 | if (m == MATCH_NO) |
4206 | m = MATCH_YES; /* No kind specifier found. */ | |
4207 | ||
4208 | return m; | |
4209 | } | |
4210 | ||
4211 | ||
e5ddaa24 TS |
4212 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4213 | already matched in parse.c, or we would not end up here in the | |
4214 | first place. So the only thing we need to check, is if there is | |
4215 | trailing garbage. If not, the match is successful. */ | |
4216 | ||
4217 | match | |
4218 | gfc_match_implicit_none (void) | |
4219 | { | |
8b7a967e TB |
4220 | char c; |
4221 | match m; | |
4222 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4223 | bool type = false; | |
4224 | bool external = false; | |
a6c63173 TB |
4225 | locus cur_loc = gfc_current_locus; |
4226 | ||
4227 | if (gfc_current_ns->seen_implicit_none | |
4228 | || gfc_current_ns->has_implicit_none_export) | |
4229 | { | |
4230 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4231 | return MATCH_ERROR; | |
4232 | } | |
8b7a967e TB |
4233 | |
4234 | gfc_gobble_whitespace (); | |
4235 | c = gfc_peek_ascii_char (); | |
4236 | if (c == '(') | |
4237 | { | |
4238 | (void) gfc_next_ascii_char (); | |
8179b067 | 4239 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4240 | return MATCH_ERROR; |
a6c63173 TB |
4241 | |
4242 | gfc_gobble_whitespace (); | |
4243 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4244 | { |
a6c63173 TB |
4245 | (void) gfc_next_ascii_char (); |
4246 | type = true; | |
4247 | } | |
4248 | else | |
4249 | for(;;) | |
4250 | { | |
4251 | m = gfc_match (" %n", name); | |
4252 | if (m != MATCH_YES) | |
4253 | return MATCH_ERROR; | |
8b7a967e | 4254 | |
a6c63173 TB |
4255 | if (strcmp (name, "type") == 0) |
4256 | type = true; | |
4257 | else if (strcmp (name, "external") == 0) | |
4258 | external = true; | |
4259 | else | |
4260 | return MATCH_ERROR; | |
8b7a967e | 4261 | |
a6c63173 TB |
4262 | gfc_gobble_whitespace (); |
4263 | c = gfc_next_ascii_char (); | |
4264 | if (c == ',') | |
4265 | continue; | |
4266 | if (c == ')') | |
4267 | break; | |
4268 | return MATCH_ERROR; | |
4269 | } | |
8b7a967e TB |
4270 | } |
4271 | else | |
4272 | type = true; | |
4273 | ||
4274 | if (gfc_match_eos () != MATCH_YES) | |
4275 | return MATCH_ERROR; | |
4276 | ||
a6c63173 | 4277 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4278 | |
4279 | return MATCH_YES; | |
e5ddaa24 TS |
4280 | } |
4281 | ||
4282 | ||
4283 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4284 | ||
4285 | static match | |
1107b970 | 4286 | match_implicit_range (void) |
e5ddaa24 | 4287 | { |
8fc541d3 FXC |
4288 | char c, c1, c2; |
4289 | int inner; | |
e5ddaa24 TS |
4290 | locus cur_loc; |
4291 | ||
4292 | cur_loc = gfc_current_locus; | |
4293 | ||
4294 | gfc_gobble_whitespace (); | |
8fc541d3 | 4295 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4296 | if (c != '(') |
4297 | { | |
4298 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4299 | goto bad; | |
4300 | } | |
4301 | ||
4302 | inner = 1; | |
4303 | while (inner) | |
4304 | { | |
4305 | gfc_gobble_whitespace (); | |
8fc541d3 | 4306 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4307 | if (!ISALPHA (c1)) |
4308 | goto bad; | |
4309 | ||
4310 | gfc_gobble_whitespace (); | |
8fc541d3 | 4311 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4312 | |
4313 | switch (c) | |
4314 | { | |
4315 | case ')': | |
66e4ab31 | 4316 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4317 | |
4318 | case ',': | |
4319 | c2 = c1; | |
4320 | break; | |
4321 | ||
4322 | case '-': | |
4323 | gfc_gobble_whitespace (); | |
8fc541d3 | 4324 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4325 | if (!ISALPHA (c2)) |
4326 | goto bad; | |
4327 | ||
4328 | gfc_gobble_whitespace (); | |
8fc541d3 | 4329 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4330 | |
4331 | if ((c != ',') && (c != ')')) | |
4332 | goto bad; | |
4333 | if (c == ')') | |
4334 | inner = 0; | |
4335 | ||
4336 | break; | |
4337 | ||
4338 | default: | |
4339 | goto bad; | |
4340 | } | |
4341 | ||
4342 | if (c1 > c2) | |
4343 | { | |
4344 | gfc_error ("Letters must be in alphabetic order in " | |
4345 | "IMPLICIT statement at %C"); | |
4346 | goto bad; | |
4347 | } | |
4348 | ||
4349 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4350 | implicits from this IMPLICIT statement. We do not check for |
4351 | conflicts with whatever earlier IMPLICIT statements may have | |
4352 | set. This is done when we've successfully finished matching | |
4353 | the current one. */ | |
524af0d6 | 4354 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4355 | goto bad; |
4356 | } | |
4357 | ||
4358 | return MATCH_YES; | |
4359 | ||
4360 | bad: | |
4361 | gfc_syntax_error (ST_IMPLICIT); | |
4362 | ||
4363 | gfc_current_locus = cur_loc; | |
4364 | return MATCH_ERROR; | |
4365 | } | |
4366 | ||
4367 | ||
4368 | /* Match an IMPLICIT statement, storing the types for | |
4369 | gfc_set_implicit() if the statement is accepted by the parser. | |
4370 | There is a strange looking, but legal syntactic construction | |
4371 | possible. It looks like: | |
4372 | ||
4373 | IMPLICIT INTEGER (a-b) (c-d) | |
4374 | ||
4375 | This is legal if "a-b" is a constant expression that happens to | |
4376 | equal one of the legal kinds for integers. The real problem | |
4377 | happens with an implicit specification that looks like: | |
4378 | ||
4379 | IMPLICIT INTEGER (a-b) | |
4380 | ||
4381 | In this case, a typespec matcher that is "greedy" (as most of the | |
4382 | matchers are) gobbles the character range as a kindspec, leaving | |
4383 | nothing left. We therefore have to go a bit more slowly in the | |
4384 | matching process by inhibiting the kindspec checking during | |
4385 | typespec matching and checking for a kind later. */ | |
4386 | ||
4387 | match | |
4388 | gfc_match_implicit (void) | |
4389 | { | |
4390 | gfc_typespec ts; | |
4391 | locus cur_loc; | |
8fc541d3 | 4392 | char c; |
e5ddaa24 TS |
4393 | match m; |
4394 | ||
8b7a967e TB |
4395 | if (gfc_current_ns->seen_implicit_none) |
4396 | { | |
4397 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4398 | "statement"); | |
4399 | return MATCH_ERROR; | |
4400 | } | |
4401 | ||
44000dbb JD |
4402 | gfc_clear_ts (&ts); |
4403 | ||
e5ddaa24 TS |
4404 | /* We don't allow empty implicit statements. */ |
4405 | if (gfc_match_eos () == MATCH_YES) | |
4406 | { | |
4407 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4408 | return MATCH_ERROR; | |
4409 | } | |
4410 | ||
e5ddaa24 TS |
4411 | do |
4412 | { | |
1107b970 PB |
4413 | /* First cleanup. */ |
4414 | gfc_clear_new_implicit (); | |
4415 | ||
e5ddaa24 | 4416 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4417 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4418 | if (m == MATCH_ERROR) |
4419 | goto error; | |
4420 | if (m == MATCH_NO) | |
4421 | goto syntax; | |
4422 | ||
4423 | cur_loc = gfc_current_locus; | |
1107b970 | 4424 | m = match_implicit_range (); |
e5ddaa24 TS |
4425 | |
4426 | if (m == MATCH_YES) | |
4427 | { | |
1107b970 | 4428 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4429 | gfc_gobble_whitespace (); |
a6c63173 TB |
4430 | c = gfc_peek_ascii_char (); |
4431 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4432 | { |
4433 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4434 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4435 | { |
9d64df18 | 4436 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4437 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4438 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4439 | NULL, 1); |
1107b970 PB |
4440 | } |
4441 | ||
4442 | /* Record the Successful match. */ | |
524af0d6 | 4443 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4444 | return MATCH_ERROR; |
a6c63173 TB |
4445 | if (c == ',') |
4446 | c = gfc_next_ascii_char (); | |
4447 | else if (gfc_match_eos () == MATCH_ERROR) | |
4448 | goto error; | |
1107b970 PB |
4449 | continue; |
4450 | } | |
e5ddaa24 TS |
4451 | |
4452 | gfc_current_locus = cur_loc; | |
4453 | } | |
4454 | ||
1107b970 PB |
4455 | /* Discard the (incorrectly) matched range. */ |
4456 | gfc_clear_new_implicit (); | |
4457 | ||
4458 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4459 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4460 | m = gfc_match_char_spec (&ts); |
1107b970 | 4461 | else |
e5ddaa24 | 4462 | { |
e2d29968 | 4463 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4464 | if (m == MATCH_NO) |
1107b970 PB |
4465 | { |
4466 | m = gfc_match_old_kind_spec (&ts); | |
4467 | if (m == MATCH_ERROR) | |
4468 | goto error; | |
4469 | if (m == MATCH_NO) | |
4470 | goto syntax; | |
4471 | } | |
e5ddaa24 | 4472 | } |
1107b970 PB |
4473 | if (m == MATCH_ERROR) |
4474 | goto error; | |
e5ddaa24 | 4475 | |
1107b970 | 4476 | m = match_implicit_range (); |
e5ddaa24 TS |
4477 | if (m == MATCH_ERROR) |
4478 | goto error; | |
4479 | if (m == MATCH_NO) | |
4480 | goto syntax; | |
4481 | ||
4482 | gfc_gobble_whitespace (); | |
8fc541d3 | 4483 | c = gfc_next_ascii_char (); |
a6c63173 | 4484 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4485 | goto syntax; |
4486 | ||
524af0d6 | 4487 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4488 | return MATCH_ERROR; |
e5ddaa24 TS |
4489 | } |
4490 | while (c == ','); | |
4491 | ||
1107b970 | 4492 | return MATCH_YES; |
e5ddaa24 TS |
4493 | |
4494 | syntax: | |
4495 | gfc_syntax_error (ST_IMPLICIT); | |
4496 | ||
4497 | error: | |
4498 | return MATCH_ERROR; | |
4499 | } | |
4500 | ||
66e4ab31 | 4501 | |
8998be20 TB |
4502 | match |
4503 | gfc_match_import (void) | |
4504 | { | |
4505 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4506 | match m; | |
4507 | gfc_symbol *sym; | |
4508 | gfc_symtree *st; | |
4509 | ||
66e4ab31 SK |
4510 | if (gfc_current_ns->proc_name == NULL |
4511 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4512 | { |
4513 | gfc_error ("IMPORT statement at %C only permitted in " | |
4514 | "an INTERFACE body"); | |
4515 | return MATCH_ERROR; | |
4516 | } | |
4517 | ||
4668d6f9 PT |
4518 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4519 | { | |
4520 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4521 | "in a module procedure interface body"); | |
4522 | return MATCH_ERROR; | |
4523 | } | |
4524 | ||
524af0d6 | 4525 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4526 | return MATCH_ERROR; |
4527 | ||
4528 | if (gfc_match_eos () == MATCH_YES) | |
4529 | { | |
4530 | /* All host variables should be imported. */ | |
4531 | gfc_current_ns->has_import_set = 1; | |
4532 | return MATCH_YES; | |
4533 | } | |
4534 | ||
4535 | if (gfc_match (" ::") == MATCH_YES) | |
4536 | { | |
4537 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4538 | { |
4539 | gfc_error ("Expecting list of named entities at %C"); | |
4540 | return MATCH_ERROR; | |
4541 | } | |
8998be20 TB |
4542 | } |
4543 | ||
4544 | for(;;) | |
4545 | { | |
2e8d9212 | 4546 | sym = NULL; |
8998be20 TB |
4547 | m = gfc_match (" %n", name); |
4548 | switch (m) | |
4549 | { | |
4550 | case MATCH_YES: | |
36d3fb4c | 4551 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4552 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4553 | { |
c4100eae | 4554 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4555 | return MATCH_ERROR; |
4556 | } | |
4e2cf5f5 | 4557 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4558 | && gfc_find_symbol (name, |
4559 | gfc_current_ns->proc_name->ns->parent, | |
4560 | 1, &sym)) | |
636dff67 | 4561 | { |
c4100eae | 4562 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4563 | return MATCH_ERROR; |
4564 | } | |
4565 | ||
4566 | if (sym == NULL) | |
4567 | { | |
c4100eae | 4568 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4569 | "at %C - does not exist.", name); |
4570 | return MATCH_ERROR; | |
4571 | } | |
4572 | ||
dd8b9dde | 4573 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4574 | { |
db30e21c | 4575 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4576 | "at %C", name); |
636dff67 SK |
4577 | goto next_item; |
4578 | } | |
4579 | ||
dd8b9dde | 4580 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4581 | st->n.sym = sym; |
4582 | sym->refs++; | |
5a8af0b4 | 4583 | sym->attr.imported = 1; |
8998be20 | 4584 | |
c3f34952 TB |
4585 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4586 | { | |
4587 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4588 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4589 | lower-case name contains the associated generic function. */ |
c3f34952 | 4590 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4591 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4592 | st->n.sym = sym; |
4593 | sym->refs++; | |
4594 | sym->attr.imported = 1; | |
4595 | } | |
4596 | ||
8998be20 TB |
4597 | goto next_item; |
4598 | ||
4599 | case MATCH_NO: | |
4600 | break; | |
4601 | ||
4602 | case MATCH_ERROR: | |
4603 | return MATCH_ERROR; | |
4604 | } | |
4605 | ||
4606 | next_item: | |
4607 | if (gfc_match_eos () == MATCH_YES) | |
4608 | break; | |
4609 | if (gfc_match_char (',') != MATCH_YES) | |
4610 | goto syntax; | |
4611 | } | |
4612 | ||
4613 | return MATCH_YES; | |
4614 | ||
4615 | syntax: | |
4616 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4617 | return MATCH_ERROR; | |
4618 | } | |
e5ddaa24 | 4619 | |
66e4ab31 | 4620 | |
f2449db4 RS |
4621 | /* A minimal implementation of gfc_match without whitespace, escape |
4622 | characters or variable arguments. Returns true if the next | |
4623 | characters match the TARGET template exactly. */ | |
4624 | ||
4625 | static bool | |
4626 | match_string_p (const char *target) | |
4627 | { | |
4628 | const char *p; | |
4629 | ||
4630 | for (p = target; *p; p++) | |
8fc541d3 | 4631 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4632 | return false; |
4633 | return true; | |
4634 | } | |
4635 | ||
6de9cd9a DN |
4636 | /* Matches an attribute specification including array specs. If |
4637 | successful, leaves the variables current_attr and current_as | |
4638 | holding the specification. Also sets the colon_seen variable for | |
4639 | later use by matchers associated with initializations. | |
4640 | ||
4641 | This subroutine is a little tricky in the sense that we don't know | |
4642 | if we really have an attr-spec until we hit the double colon. | |
4643 | Until that time, we can only return MATCH_NO. This forces us to | |
4644 | check for duplicate specification at this level. */ | |
4645 | ||
4646 | static match | |
4647 | match_attr_spec (void) | |
4648 | { | |
6de9cd9a | 4649 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4650 | enum |
6de9cd9a DN |
4651 | { GFC_DECL_BEGIN = 0, |
4652 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
4653 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4654 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4655 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4656 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4657 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4658 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4659 | }; |
6de9cd9a DN |
4660 | |
4661 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4662 | #define NUM_DECL GFC_DECL_END | |
4663 | ||
6de9cd9a DN |
4664 | locus start, seen_at[NUM_DECL]; |
4665 | int seen[NUM_DECL]; | |
09639a83 | 4666 | unsigned int d; |
6de9cd9a DN |
4667 | const char *attr; |
4668 | match m; | |
524af0d6 | 4669 | bool t; |
6de9cd9a DN |
4670 | |
4671 | gfc_clear_attr (¤t_attr); | |
63645982 | 4672 | start = gfc_current_locus; |
6de9cd9a DN |
4673 | |
4674 | current_as = NULL; | |
4675 | colon_seen = 0; | |
6f855a26 | 4676 | attr_seen = 0; |
6de9cd9a DN |
4677 | |
4678 | /* See if we get all of the keywords up to the final double colon. */ | |
4679 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4680 | seen[d] = 0; | |
4681 | ||
4682 | for (;;) | |
4683 | { | |
8fc541d3 | 4684 | char ch; |
a8b3b0b6 | 4685 | |
f2449db4 RS |
4686 | d = DECL_NONE; |
4687 | gfc_gobble_whitespace (); | |
4688 | ||
8fc541d3 | 4689 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4690 | if (ch == ':') |
4691 | { | |
4692 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4693 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4694 | break; |
4695 | } | |
4696 | else if (ch == ',') | |
a8b3b0b6 | 4697 | { |
a8b3b0b6 | 4698 | gfc_gobble_whitespace (); |
8fc541d3 | 4699 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4700 | { |
f2449db4 | 4701 | case 'a': |
1eee5628 TB |
4702 | gfc_next_ascii_char (); |
4703 | switch (gfc_next_ascii_char ()) | |
4704 | { | |
4705 | case 'l': | |
4706 | if (match_string_p ("locatable")) | |
4707 | { | |
4708 | /* Matched "allocatable". */ | |
4709 | d = DECL_ALLOCATABLE; | |
4710 | } | |
4711 | break; | |
4712 | ||
4713 | case 's': | |
4714 | if (match_string_p ("ynchronous")) | |
4715 | { | |
4716 | /* Matched "asynchronous". */ | |
4717 | d = DECL_ASYNCHRONOUS; | |
4718 | } | |
4719 | break; | |
34d567d1 FR |
4720 | |
4721 | case 'u': | |
4722 | if (match_string_p ("tomatic")) | |
4723 | { | |
4724 | /* Matched "automatic". */ | |
4725 | d = DECL_AUTOMATIC; | |
4726 | } | |
4727 | break; | |
1eee5628 | 4728 | } |
fe4e525c | 4729 | break; |
f2449db4 RS |
4730 | |
4731 | case 'b': | |
a8b3b0b6 | 4732 | /* Try and match the bind(c). */ |
1eabf70a | 4733 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4734 | if (m == MATCH_YES) |
a8b3b0b6 | 4735 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4736 | else if (m == MATCH_ERROR) |
4737 | goto cleanup; | |
f2449db4 RS |
4738 | break; |
4739 | ||
be59db2d | 4740 | case 'c': |
fe4e525c TB |
4741 | gfc_next_ascii_char (); |
4742 | if ('o' != gfc_next_ascii_char ()) | |
4743 | break; | |
4744 | switch (gfc_next_ascii_char ()) | |
4745 | { | |
4746 | case 'd': | |
4747 | if (match_string_p ("imension")) | |
4748 | { | |
4749 | d = DECL_CODIMENSION; | |
4750 | break; | |
4751 | } | |
191816a3 | 4752 | /* FALLTHRU */ |
fe4e525c TB |
4753 | case 'n': |
4754 | if (match_string_p ("tiguous")) | |
4755 | { | |
4756 | d = DECL_CONTIGUOUS; | |
4757 | break; | |
4758 | } | |
4759 | } | |
be59db2d TB |
4760 | break; |
4761 | ||
f2449db4 RS |
4762 | case 'd': |
4763 | if (match_string_p ("dimension")) | |
4764 | d = DECL_DIMENSION; | |
4765 | break; | |
4766 | ||
4767 | case 'e': | |
4768 | if (match_string_p ("external")) | |
4769 | d = DECL_EXTERNAL; | |
4770 | break; | |
4771 | ||
4772 | case 'i': | |
4773 | if (match_string_p ("int")) | |
4774 | { | |
8fc541d3 | 4775 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4776 | if (ch == 'e') |
4777 | { | |
4778 | if (match_string_p ("nt")) | |
4779 | { | |
4780 | /* Matched "intent". */ | |
4781 | /* TODO: Call match_intent_spec from here. */ | |
4782 | if (gfc_match (" ( in out )") == MATCH_YES) | |
4783 | d = DECL_INOUT; | |
4784 | else if (gfc_match (" ( in )") == MATCH_YES) | |
4785 | d = DECL_IN; | |
4786 | else if (gfc_match (" ( out )") == MATCH_YES) | |
4787 | d = DECL_OUT; | |
4788 | } | |
4789 | } | |
4790 | else if (ch == 'r') | |
4791 | { | |
4792 | if (match_string_p ("insic")) | |
4793 | { | |
4794 | /* Matched "intrinsic". */ | |
4795 | d = DECL_INTRINSIC; | |
4796 | } | |
4797 | } | |
4798 | } | |
4799 | break; | |
4800 | ||
5bab4c96 PT |
4801 | case 'k': |
4802 | if (match_string_p ("kind")) | |
4803 | d = DECL_KIND; | |
4804 | break; | |
4805 | ||
4806 | case 'l': | |
4807 | if (match_string_p ("len")) | |
4808 | d = DECL_LEN; | |
4809 | break; | |
4810 | ||
f2449db4 RS |
4811 | case 'o': |
4812 | if (match_string_p ("optional")) | |
4813 | d = DECL_OPTIONAL; | |
4814 | break; | |
4815 | ||
4816 | case 'p': | |
8fc541d3 FXC |
4817 | gfc_next_ascii_char (); |
4818 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
4819 | { |
4820 | case 'a': | |
4821 | if (match_string_p ("rameter")) | |
4822 | { | |
4823 | /* Matched "parameter". */ | |
4824 | d = DECL_PARAMETER; | |
4825 | } | |
4826 | break; | |
4827 | ||
4828 | case 'o': | |
4829 | if (match_string_p ("inter")) | |
4830 | { | |
4831 | /* Matched "pointer". */ | |
4832 | d = DECL_POINTER; | |
4833 | } | |
4834 | break; | |
4835 | ||
4836 | case 'r': | |
8fc541d3 | 4837 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4838 | if (ch == 'i') |
4839 | { | |
4840 | if (match_string_p ("vate")) | |
4841 | { | |
4842 | /* Matched "private". */ | |
4843 | d = DECL_PRIVATE; | |
4844 | } | |
4845 | } | |
4846 | else if (ch == 'o') | |
4847 | { | |
4848 | if (match_string_p ("tected")) | |
4849 | { | |
4850 | /* Matched "protected". */ | |
4851 | d = DECL_PROTECTED; | |
4852 | } | |
4853 | } | |
4854 | break; | |
4855 | ||
4856 | case 'u': | |
4857 | if (match_string_p ("blic")) | |
4858 | { | |
4859 | /* Matched "public". */ | |
4860 | d = DECL_PUBLIC; | |
4861 | } | |
4862 | break; | |
4863 | } | |
4864 | break; | |
4865 | ||
4866 | case 's': | |
34d567d1 FR |
4867 | gfc_next_ascii_char (); |
4868 | switch (gfc_next_ascii_char ()) | |
4869 | { | |
4870 | case 'a': | |
4871 | if (match_string_p ("ve")) | |
4872 | { | |
4873 | /* Matched "save". */ | |
4874 | d = DECL_SAVE; | |
4875 | } | |
4876 | break; | |
4877 | ||
4878 | case 't': | |
4879 | if (match_string_p ("atic")) | |
4880 | { | |
4881 | /* Matched "static". */ | |
4882 | d = DECL_STATIC; | |
4883 | } | |
4884 | break; | |
4885 | } | |
f2449db4 RS |
4886 | break; |
4887 | ||
4888 | case 't': | |
4889 | if (match_string_p ("target")) | |
4890 | d = DECL_TARGET; | |
4891 | break; | |
4892 | ||
4893 | case 'v': | |
8fc541d3 FXC |
4894 | gfc_next_ascii_char (); |
4895 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
4896 | if (ch == 'a') |
4897 | { | |
4898 | if (match_string_p ("lue")) | |
4899 | { | |
4900 | /* Matched "value". */ | |
4901 | d = DECL_VALUE; | |
4902 | } | |
4903 | } | |
4904 | else if (ch == 'o') | |
4905 | { | |
4906 | if (match_string_p ("latile")) | |
4907 | { | |
4908 | /* Matched "volatile". */ | |
4909 | d = DECL_VOLATILE; | |
4910 | } | |
4911 | } | |
4912 | break; | |
a8b3b0b6 CR |
4913 | } |
4914 | } | |
d468bcdb | 4915 | |
f2449db4 RS |
4916 | /* No double colon and no recognizable decl_type, so assume that |
4917 | we've been looking at something else the whole time. */ | |
4918 | if (d == DECL_NONE) | |
4919 | { | |
4920 | m = MATCH_NO; | |
4921 | goto cleanup; | |
4922 | } | |
d51347f9 | 4923 | |
acb388a0 JD |
4924 | /* Check to make sure any parens are paired up correctly. */ |
4925 | if (gfc_match_parens () == MATCH_ERROR) | |
4926 | { | |
4927 | m = MATCH_ERROR; | |
4928 | goto cleanup; | |
4929 | } | |
4930 | ||
6de9cd9a | 4931 | seen[d]++; |
63645982 | 4932 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 4933 | |
d3a9eea2 | 4934 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 4935 | { |
d3a9eea2 | 4936 | gfc_array_spec *as = NULL; |
6de9cd9a | 4937 | |
d3a9eea2 TB |
4938 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
4939 | d == DECL_CODIMENSION); | |
4940 | ||
4941 | if (current_as == NULL) | |
4942 | current_as = as; | |
4943 | else if (m == MATCH_YES) | |
6de9cd9a | 4944 | { |
524af0d6 | 4945 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 4946 | m = MATCH_ERROR; |
cede9502 | 4947 | free (as); |
6de9cd9a DN |
4948 | } |
4949 | ||
be59db2d TB |
4950 | if (m == MATCH_NO) |
4951 | { | |
d3a9eea2 TB |
4952 | if (d == DECL_CODIMENSION) |
4953 | gfc_error ("Missing codimension specification at %C"); | |
4954 | else | |
4955 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
4956 | m = MATCH_ERROR; |
4957 | } | |
4958 | ||
4959 | if (m == MATCH_ERROR) | |
4960 | goto cleanup; | |
4961 | } | |
6de9cd9a DN |
4962 | } |
4963 | ||
6de9cd9a DN |
4964 | /* Since we've seen a double colon, we have to be looking at an |
4965 | attr-spec. This means that we can now issue errors. */ | |
4966 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4967 | if (seen[d] > 1) | |
4968 | { | |
4969 | switch (d) | |
4970 | { | |
4971 | case DECL_ALLOCATABLE: | |
4972 | attr = "ALLOCATABLE"; | |
4973 | break; | |
1eee5628 TB |
4974 | case DECL_ASYNCHRONOUS: |
4975 | attr = "ASYNCHRONOUS"; | |
4976 | break; | |
be59db2d TB |
4977 | case DECL_CODIMENSION: |
4978 | attr = "CODIMENSION"; | |
4979 | break; | |
fe4e525c TB |
4980 | case DECL_CONTIGUOUS: |
4981 | attr = "CONTIGUOUS"; | |
4982 | break; | |
6de9cd9a DN |
4983 | case DECL_DIMENSION: |
4984 | attr = "DIMENSION"; | |
4985 | break; | |
4986 | case DECL_EXTERNAL: | |
4987 | attr = "EXTERNAL"; | |
4988 | break; | |
4989 | case DECL_IN: | |
4990 | attr = "INTENT (IN)"; | |
4991 | break; | |
4992 | case DECL_OUT: | |
4993 | attr = "INTENT (OUT)"; | |
4994 | break; | |
4995 | case DECL_INOUT: | |
4996 | attr = "INTENT (IN OUT)"; | |
4997 | break; | |
4998 | case DECL_INTRINSIC: | |
4999 | attr = "INTRINSIC"; | |
5000 | break; | |
5001 | case DECL_OPTIONAL: | |
5002 | attr = "OPTIONAL"; | |
5003 | break; | |
5bab4c96 PT |
5004 | case DECL_KIND: |
5005 | attr = "KIND"; | |
5006 | break; | |
5007 | case DECL_LEN: | |
5008 | attr = "LEN"; | |
5009 | break; | |
6de9cd9a DN |
5010 | case DECL_PARAMETER: |
5011 | attr = "PARAMETER"; | |
5012 | break; | |
5013 | case DECL_POINTER: | |
5014 | attr = "POINTER"; | |
5015 | break; | |
ee7e677f TB |
5016 | case DECL_PROTECTED: |
5017 | attr = "PROTECTED"; | |
5018 | break; | |
6de9cd9a DN |
5019 | case DECL_PRIVATE: |
5020 | attr = "PRIVATE"; | |
5021 | break; | |
5022 | case DECL_PUBLIC: | |
5023 | attr = "PUBLIC"; | |
5024 | break; | |
5025 | case DECL_SAVE: | |
5026 | attr = "SAVE"; | |
5027 | break; | |
34d567d1 FR |
5028 | case DECL_STATIC: |
5029 | attr = "STATIC"; | |
5030 | break; | |
5031 | case DECL_AUTOMATIC: | |
5032 | attr = "AUTOMATIC"; | |
5033 | break; | |
6de9cd9a DN |
5034 | case DECL_TARGET: |
5035 | attr = "TARGET"; | |
5036 | break; | |
a8b3b0b6 CR |
5037 | case DECL_IS_BIND_C: |
5038 | attr = "IS_BIND_C"; | |
5039 | break; | |
5040 | case DECL_VALUE: | |
5041 | attr = "VALUE"; | |
5042 | break; | |
775e6c3a TB |
5043 | case DECL_VOLATILE: |
5044 | attr = "VOLATILE"; | |
5045 | break; | |
6de9cd9a | 5046 | default: |
66e4ab31 | 5047 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5048 | } |
5049 | ||
5050 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5051 | m = MATCH_ERROR; | |
5052 | goto cleanup; | |
5053 | } | |
5054 | ||
5055 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5056 | to the current attribute. */ | |
5057 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5058 | { | |
5059 | if (seen[d] == 0) | |
5060 | continue; | |
6f855a26 FR |
5061 | else |
5062 | attr_seen = 1; | |
6de9cd9a | 5063 | |
34d567d1 FR |
5064 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5065 | && !flag_dec_static) | |
5066 | { | |
cf004230 FR |
5067 | gfc_error ("%s at %L is a DEC extension, enable with " |
5068 | "%<-fdec-static%>", | |
34d567d1 FR |
5069 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5070 | m = MATCH_ERROR; | |
5071 | goto cleanup; | |
5072 | } | |
5073 | /* Allow SAVE with STATIC, but don't complain. */ | |
5074 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5075 | continue; | |
5076 | ||
6de9cd9a | 5077 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
5078 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5079 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5080 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5081 | { |
5046aff5 PT |
5082 | if (d == DECL_ALLOCATABLE) |
5083 | { | |
524af0d6 JB |
5084 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5085 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
5086 | { |
5087 | m = MATCH_ERROR; | |
5088 | goto cleanup; | |
5089 | } | |
636dff67 | 5090 | } |
5bab4c96 PT |
5091 | else if (d == DECL_KIND) |
5092 | { | |
5093 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5094 | "attribute at %C in a TYPE definition")) | |
5095 | { | |
5096 | m = MATCH_ERROR; | |
5097 | goto cleanup; | |
5098 | } | |
5099 | if (current_ts.type != BT_INTEGER) | |
5100 | { | |
5101 | gfc_error ("Component with KIND attribute at %C must be " | |
5102 | "INTEGER"); | |
5103 | m = MATCH_ERROR; | |
5104 | goto cleanup; | |
5105 | } | |
5106 | if (current_ts.kind != gfc_default_integer_kind) | |
5107 | { | |
5108 | gfc_error ("Component with KIND attribute at %C must be " | |
5109 | "default integer kind (%d)", | |
5110 | gfc_default_integer_kind); | |
5111 | m = MATCH_ERROR; | |
5112 | goto cleanup; | |
5113 | } | |
5114 | } | |
5115 | else if (d == DECL_LEN) | |
5116 | { | |
5117 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5118 | "attribute at %C in a TYPE definition")) | |
5119 | { | |
5120 | m = MATCH_ERROR; | |
5121 | goto cleanup; | |
5122 | } | |
5123 | if (current_ts.type != BT_INTEGER) | |
5124 | { | |
5125 | gfc_error ("Component with LEN attribute at %C must be " | |
5126 | "INTEGER"); | |
5127 | m = MATCH_ERROR; | |
5128 | goto cleanup; | |
5129 | } | |
5130 | if (current_ts.kind != gfc_default_integer_kind) | |
5131 | { | |
5132 | gfc_error ("Component with LEN attribute at %C must be " | |
5133 | "default integer kind (%d)", | |
5134 | gfc_default_integer_kind); | |
5135 | m = MATCH_ERROR; | |
5136 | goto cleanup; | |
5137 | } | |
5138 | } | |
636dff67 | 5139 | else |
5046aff5 PT |
5140 | { |
5141 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5142 | &seen_at[d]); |
5046aff5 PT |
5143 | m = MATCH_ERROR; |
5144 | goto cleanup; | |
5145 | } | |
6de9cd9a DN |
5146 | } |
5147 | ||
4213f93b | 5148 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5149 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5150 | { |
5151 | if (d == DECL_PRIVATE) | |
5152 | attr = "PRIVATE"; | |
5153 | else | |
5154 | attr = "PUBLIC"; | |
d51347f9 TB |
5155 | if (gfc_current_state () == COMP_DERIVED |
5156 | && gfc_state_stack->previous | |
5157 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5158 | { | |
524af0d6 | 5159 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5160 | "at %L in a TYPE definition", attr, |
524af0d6 | 5161 | &seen_at[d])) |
d51347f9 TB |
5162 | { |
5163 | m = MATCH_ERROR; | |
5164 | goto cleanup; | |
5165 | } | |
5166 | } | |
5167 | else | |
5168 | { | |
5169 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5170 | "specification part of a module", attr, &seen_at[d]); | |
5171 | m = MATCH_ERROR; | |
5172 | goto cleanup; | |
5173 | } | |
4213f93b PT |
5174 | } |
5175 | ||
5bab4c96 PT |
5176 | if (gfc_current_state () != COMP_DERIVED |
5177 | && (d == DECL_KIND || d == DECL_LEN)) | |
5178 | { | |
5179 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5180 | "definition", &seen_at[d]); | |
5181 | m = MATCH_ERROR; | |
5182 | goto cleanup; | |
5183 | } | |
5184 | ||
6de9cd9a DN |
5185 | switch (d) |
5186 | { | |
5187 | case DECL_ALLOCATABLE: | |
5188 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5189 | break; | |
5190 | ||
1eee5628 | 5191 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5192 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5193 | t = false; | |
1eee5628 TB |
5194 | else |
5195 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5196 | break; | |
5197 | ||
be59db2d TB |
5198 | case DECL_CODIMENSION: |
5199 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5200 | break; | |
5201 | ||
fe4e525c | 5202 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5203 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5204 | t = false; | |
fe4e525c TB |
5205 | else |
5206 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5207 | break; | |
5208 | ||
6de9cd9a | 5209 | case DECL_DIMENSION: |
231b2fcc | 5210 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5211 | break; |
5212 | ||
5213 | case DECL_EXTERNAL: | |
5214 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5215 | break; | |
5216 | ||
5217 | case DECL_IN: | |
5218 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5219 | break; | |
5220 | ||
5221 | case DECL_OUT: | |
5222 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5223 | break; | |
5224 | ||
5225 | case DECL_INOUT: | |
5226 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5227 | break; | |
5228 | ||
5229 | case DECL_INTRINSIC: | |
5230 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5231 | break; | |
5232 | ||
5233 | case DECL_OPTIONAL: | |
5234 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5235 | break; | |
5236 | ||
5bab4c96 PT |
5237 | case DECL_KIND: |
5238 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5239 | break; | |
5240 | ||
5241 | case DECL_LEN: | |
5242 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5243 | break; | |
5244 | ||
6de9cd9a | 5245 | case DECL_PARAMETER: |
231b2fcc | 5246 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5247 | break; |
5248 | ||
5249 | case DECL_POINTER: | |
5250 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5251 | break; | |
5252 | ||
ee7e677f | 5253 | case DECL_PROTECTED: |
721be0f4 SK |
5254 | if (gfc_current_state () != COMP_MODULE |
5255 | || (gfc_current_ns->proc_name | |
5256 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5257 | { |
5258 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5259 | "part of a module"); | |
524af0d6 | 5260 | t = false; |
ee7e677f TB |
5261 | break; |
5262 | } | |
5263 | ||
524af0d6 JB |
5264 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5265 | t = false; | |
ee7e677f TB |
5266 | else |
5267 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5268 | break; | |
5269 | ||
6de9cd9a | 5270 | case DECL_PRIVATE: |
231b2fcc TS |
5271 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5272 | &seen_at[d]); | |
6de9cd9a DN |
5273 | break; |
5274 | ||
5275 | case DECL_PUBLIC: | |
231b2fcc TS |
5276 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5277 | &seen_at[d]); | |
6de9cd9a DN |
5278 | break; |
5279 | ||
34d567d1 | 5280 | case DECL_STATIC: |
6de9cd9a | 5281 | case DECL_SAVE: |
80f95228 | 5282 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5283 | break; |
5284 | ||
34d567d1 FR |
5285 | case DECL_AUTOMATIC: |
5286 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5287 | break; | |
5288 | ||
6de9cd9a DN |
5289 | case DECL_TARGET: |
5290 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5291 | break; | |
5292 | ||
a8b3b0b6 CR |
5293 | case DECL_IS_BIND_C: |
5294 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5295 | break; | |
f5acf0f2 | 5296 | |
06469efd | 5297 | case DECL_VALUE: |
524af0d6 JB |
5298 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5299 | t = false; | |
06469efd PT |
5300 | else |
5301 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5302 | break; | |
5303 | ||
775e6c3a | 5304 | case DECL_VOLATILE: |
524af0d6 JB |
5305 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5306 | t = false; | |
775e6c3a TB |
5307 | else |
5308 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5309 | break; | |
5310 | ||
6de9cd9a DN |
5311 | default: |
5312 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5313 | } | |
5314 | ||
524af0d6 | 5315 | if (!t) |
6de9cd9a DN |
5316 | { |
5317 | m = MATCH_ERROR; | |
5318 | goto cleanup; | |
5319 | } | |
5320 | } | |
5321 | ||
dab2cbf8 | 5322 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5323 | if ((gfc_current_state () == COMP_MODULE |
5324 | || gfc_current_state () == COMP_SUBMODULE) | |
5325 | && !current_attr.save | |
dab2cbf8 | 5326 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5327 | current_attr.save = SAVE_IMPLICIT; |
5328 | ||
6de9cd9a DN |
5329 | colon_seen = 1; |
5330 | return MATCH_YES; | |
5331 | ||
5332 | cleanup: | |
63645982 | 5333 | gfc_current_locus = start; |
6de9cd9a DN |
5334 | gfc_free_array_spec (current_as); |
5335 | current_as = NULL; | |
6f855a26 | 5336 | attr_seen = 0; |
6de9cd9a DN |
5337 | return m; |
5338 | } | |
5339 | ||
5340 | ||
a8b3b0b6 CR |
5341 | /* Set the binding label, dest_label, either with the binding label |
5342 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5343 | will be the symbol name in all lower case, as required by the draft | |
5344 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5345 | there is more than one argument (num_idents), it is an error. */ | |
5346 | ||
524af0d6 | 5347 | static bool |
f5acf0f2 | 5348 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5349 | int num_idents) |
a8b3b0b6 | 5350 | { |
ad4a2f64 | 5351 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5352 | { |
ad4a2f64 TB |
5353 | gfc_error ("Multiple identifiers provided with " |
5354 | "single NAME= specifier at %C"); | |
524af0d6 | 5355 | return false; |
ad4a2f64 | 5356 | } |
a8b3b0b6 | 5357 | |
62603fae | 5358 | if (curr_binding_label) |
eea58adb | 5359 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5360 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5361 | else |
5362 | { | |
5363 | /* No binding label given, and the NAME= specifier did not exist, | |
5364 | which means there was no NAME="". */ | |
5365 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5366 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5367 | } |
f5acf0f2 | 5368 | |
524af0d6 | 5369 | return true; |
a8b3b0b6 CR |
5370 | } |
5371 | ||
5372 | ||
5373 | /* Set the status of the given common block as being BIND(C) or not, | |
5374 | depending on the given parameter, is_bind_c. */ | |
5375 | ||
5376 | void | |
5377 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5378 | { | |
5379 | com_block->is_bind_c = is_bind_c; | |
5380 | return; | |
5381 | } | |
5382 | ||
5383 | ||
5384 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5385 | ||
524af0d6 | 5386 | bool |
00820a2a | 5387 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5388 | { |
bc21d315 | 5389 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5390 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5391 | ? true : false; |
00820a2a | 5392 | else if (ts->type == BT_CLASS) |
524af0d6 | 5393 | return false; |
45a69325 | 5394 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5395 | return false; |
45a69325 | 5396 | |
524af0d6 | 5397 | return true; |
a8b3b0b6 CR |
5398 | } |
5399 | ||
5400 | ||
5401 | /* Verify that the variables of a given common block, which has been | |
5402 | defined with the attribute specifier bind(c), to be of a C | |
5403 | interoperable type. Errors will be reported here, if | |
5404 | encountered. */ | |
5405 | ||
524af0d6 | 5406 | bool |
a8b3b0b6 CR |
5407 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5408 | { | |
5409 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5410 | bool retval = true; |
a8b3b0b6 CR |
5411 | |
5412 | curr_sym = com_block->head; | |
f5acf0f2 | 5413 | |
a8b3b0b6 CR |
5414 | /* Make sure we have at least one symbol. */ |
5415 | if (curr_sym == NULL) | |
5416 | return retval; | |
5417 | ||
5418 | /* Here we know we have a symbol, so we'll execute this loop | |
5419 | at least once. */ | |
5420 | do | |
5421 | { | |
5422 | /* The second to last param, 1, says this is in a common block. */ | |
5423 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5424 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5425 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5426 | |
5427 | return retval; | |
5428 | } | |
5429 | ||
5430 | ||
5431 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5432 | an appropriate error message is reported. */ | |
5433 | ||
524af0d6 | 5434 | bool |
a8b3b0b6 CR |
5435 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5436 | int is_in_common, gfc_common_head *com_block) | |
5437 | { | |
8327f9c2 | 5438 | bool bind_c_function = false; |
524af0d6 | 5439 | bool retval = true; |
d8fa96e0 | 5440 | |
8327f9c2 TB |
5441 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5442 | bind_c_function = true; | |
5443 | ||
d8fa96e0 CR |
5444 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5445 | { | |
5446 | tmp_sym = tmp_sym->result; | |
5447 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5448 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5449 | { |
48749dbc MLI |
5450 | gfc_warning (OPT_Wc_binding_type, |
5451 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5452 | "%L may not be C interoperable", tmp_sym->name, |
5453 | &tmp_sym->declared_at); | |
5454 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5455 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5456 | tmp_sym->ts.is_c_interop = 1; | |
5457 | tmp_sym->attr.is_c_interop = 1; | |
5458 | } | |
5459 | } | |
8327f9c2 | 5460 | |
a8b3b0b6 CR |
5461 | /* Here, we know we have the bind(c) attribute, so if we have |
5462 | enough type info, then verify that it's a C interop kind. | |
5463 | The info could be in the symbol already, or possibly still in | |
5464 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5465 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5466 | { |
524af0d6 | 5467 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5468 | { |
5469 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5470 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5471 | { |
48749dbc MLI |
5472 | gfc_warning (OPT_Wc_binding_type, |
5473 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5474 | "may not be a C interoperable " |
48749dbc | 5475 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5476 | tmp_sym->name, com_block->name, |
5477 | &(tmp_sym->declared_at), com_block->name); | |
5478 | } | |
5479 | else | |
5480 | { | |
5481 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5482 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5483 | "interoperable but it is BIND(C)", |
5484 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5485 | else if (warn_c_binding_type) |
48749dbc | 5486 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5487 | "may not be a C interoperable " |
c4100eae | 5488 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5489 | tmp_sym->name, &(tmp_sym->declared_at)); |
5490 | } | |
5491 | } | |
f5acf0f2 | 5492 | |
a8b3b0b6 CR |
5493 | /* Variables declared w/in a common block can't be bind(c) |
5494 | since there's no way for C to see these variables, so there's | |
5495 | semantically no reason for the attribute. */ | |
5496 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5497 | { | |
c4100eae | 5498 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5499 | "%L cannot be declared with BIND(C) " |
5500 | "since it is not a global", | |
5501 | tmp_sym->name, com_block->name, | |
5502 | &(tmp_sym->declared_at)); | |
524af0d6 | 5503 | retval = false; |
a8b3b0b6 | 5504 | } |
f5acf0f2 | 5505 | |
a8b3b0b6 CR |
5506 | /* Scalar variables that are bind(c) can not have the pointer |
5507 | or allocatable attributes. */ | |
5508 | if (tmp_sym->attr.is_bind_c == 1) | |
5509 | { | |
5510 | if (tmp_sym->attr.pointer == 1) | |
5511 | { | |
c4100eae | 5512 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5513 | "POINTER and BIND(C) attributes", |
5514 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5515 | retval = false; |
a8b3b0b6 CR |
5516 | } |
5517 | ||
5518 | if (tmp_sym->attr.allocatable == 1) | |
5519 | { | |
c4100eae | 5520 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5521 | "ALLOCATABLE and BIND(C) attributes", |
5522 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5523 | retval = false; |
a8b3b0b6 CR |
5524 | } |
5525 | ||
8327f9c2 TB |
5526 | } |
5527 | ||
5528 | /* If it is a BIND(C) function, make sure the return value is a | |
5529 | scalar value. The previous tests in this function made sure | |
5530 | the type is interoperable. */ | |
5531 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5532 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5533 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5534 | ||
5535 | /* BIND(C) functions can not return a character string. */ | |
5536 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
5537 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5538 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5539 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 5540 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
5541 | "be a character string", tmp_sym->name, |
5542 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
5543 | } |
5544 | ||
5545 | /* See if the symbol has been marked as private. If it has, make sure | |
5546 | there is no binding label and warn the user if there is one. */ | |
5547 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5548 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5549 | /* Use gfc_warning_now because we won't say that the symbol fails |
5550 | just because of this. */ | |
db30e21c | 5551 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5552 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5553 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5554 | ||
5555 | return retval; | |
5556 | } | |
5557 | ||
5558 | ||
5559 | /* Set the appropriate fields for a symbol that's been declared as | |
5560 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5561 | the type is C interoperable. Errors are reported by the functions | |
5562 | used to set/test these fields. */ | |
5563 | ||
524af0d6 | 5564 | bool |
a8b3b0b6 CR |
5565 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5566 | { | |
524af0d6 | 5567 | bool retval = true; |
f5acf0f2 | 5568 | |
a8b3b0b6 CR |
5569 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5570 | ||
5571 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5572 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5573 | ||
524af0d6 JB |
5574 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5575 | return false; | |
a8b3b0b6 CR |
5576 | |
5577 | return retval; | |
5578 | } | |
5579 | ||
5580 | ||
5581 | /* Set the fields marking the given common block as BIND(C), including | |
5582 | a binding label, and report any errors encountered. */ | |
5583 | ||
524af0d6 | 5584 | bool |
a8b3b0b6 CR |
5585 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5586 | { | |
524af0d6 | 5587 | bool retval = true; |
f5acf0f2 | 5588 | |
a8b3b0b6 | 5589 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5590 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5591 | num_idents)) |
5592 | return false; | |
a8b3b0b6 CR |
5593 | |
5594 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5595 | set_com_block_bind_c (com_block, 1); | |
5596 | ||
5597 | return retval; | |
5598 | } | |
5599 | ||
5600 | ||
5601 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5602 | attribute applies to. */ | |
5603 | ||
524af0d6 | 5604 | bool |
a8b3b0b6 CR |
5605 | get_bind_c_idents (void) |
5606 | { | |
5607 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5608 | int num_idents = 0; | |
5609 | gfc_symbol *tmp_sym = NULL; | |
5610 | match found_id; | |
5611 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5612 | |
a8b3b0b6 CR |
5613 | if (gfc_match_name (name) == MATCH_YES) |
5614 | { | |
5615 | found_id = MATCH_YES; | |
5616 | gfc_get_ha_symbol (name, &tmp_sym); | |
5617 | } | |
5618 | else if (match_common_name (name) == MATCH_YES) | |
5619 | { | |
5620 | found_id = MATCH_YES; | |
5621 | com_block = gfc_get_common (name, 0); | |
5622 | } | |
5623 | else | |
5624 | { | |
5625 | gfc_error ("Need either entity or common block name for " | |
5626 | "attribute specification statement at %C"); | |
524af0d6 | 5627 | return false; |
a8b3b0b6 | 5628 | } |
f5acf0f2 | 5629 | |
a8b3b0b6 CR |
5630 | /* Save the current identifier and look for more. */ |
5631 | do | |
5632 | { | |
5633 | /* Increment the number of identifiers found for this spec stmt. */ | |
5634 | num_idents++; | |
5635 | ||
5636 | /* Make sure we have a sym or com block, and verify that it can | |
5637 | be bind(c). Set the appropriate field(s) and look for more | |
5638 | identifiers. */ | |
f5acf0f2 | 5639 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5640 | { |
5641 | if (tmp_sym != NULL) | |
5642 | { | |
524af0d6 JB |
5643 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5644 | return false; | |
a8b3b0b6 CR |
5645 | } |
5646 | else | |
5647 | { | |
524af0d6 JB |
5648 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5649 | return false; | |
a8b3b0b6 | 5650 | } |
f5acf0f2 | 5651 | |
a8b3b0b6 CR |
5652 | /* Look to see if we have another identifier. */ |
5653 | tmp_sym = NULL; | |
5654 | if (gfc_match_eos () == MATCH_YES) | |
5655 | found_id = MATCH_NO; | |
5656 | else if (gfc_match_char (',') != MATCH_YES) | |
5657 | found_id = MATCH_NO; | |
5658 | else if (gfc_match_name (name) == MATCH_YES) | |
5659 | { | |
5660 | found_id = MATCH_YES; | |
5661 | gfc_get_ha_symbol (name, &tmp_sym); | |
5662 | } | |
5663 | else if (match_common_name (name) == MATCH_YES) | |
5664 | { | |
5665 | found_id = MATCH_YES; | |
5666 | com_block = gfc_get_common (name, 0); | |
5667 | } | |
5668 | else | |
5669 | { | |
5670 | gfc_error ("Missing entity or common block name for " | |
5671 | "attribute specification statement at %C"); | |
524af0d6 | 5672 | return false; |
a8b3b0b6 CR |
5673 | } |
5674 | } | |
5675 | else | |
5676 | { | |
5677 | gfc_internal_error ("Missing symbol"); | |
5678 | } | |
5679 | } while (found_id == MATCH_YES); | |
5680 | ||
5681 | /* if we get here we were successful */ | |
524af0d6 | 5682 | return true; |
a8b3b0b6 CR |
5683 | } |
5684 | ||
5685 | ||
5686 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5687 | |
a8b3b0b6 CR |
5688 | match |
5689 | gfc_match_bind_c_stmt (void) | |
5690 | { | |
5691 | match found_match = MATCH_NO; | |
5692 | gfc_typespec *ts; | |
5693 | ||
5694 | ts = ¤t_ts; | |
f5acf0f2 | 5695 | |
a8b3b0b6 CR |
5696 | /* This may not be necessary. */ |
5697 | gfc_clear_ts (ts); | |
5698 | /* Clear the temporary binding label holder. */ | |
62603fae | 5699 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5700 | |
5701 | /* Look for the bind(c). */ | |
1eabf70a | 5702 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5703 | |
5704 | if (found_match == MATCH_YES) | |
5705 | { | |
878cdb7b TB |
5706 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5707 | return MATCH_ERROR; | |
5708 | ||
a8b3b0b6 CR |
5709 | /* Look for the :: now, but it is not required. */ |
5710 | gfc_match (" :: "); | |
5711 | ||
5712 | /* Get the identifier(s) that needs to be updated. This may need to | |
5713 | change to hand the flag(s) for the attr specified so all identifiers | |
5714 | found can have all appropriate parts updated (assuming that the same | |
5715 | spec stmt can have multiple attrs, such as both bind(c) and | |
5716 | allocatable...). */ | |
524af0d6 | 5717 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5718 | /* Error message should have printed already. */ |
5719 | return MATCH_ERROR; | |
5720 | } | |
5721 | ||
5722 | return found_match; | |
5723 | } | |
5724 | ||
5725 | ||
6de9cd9a DN |
5726 | /* Match a data declaration statement. */ |
5727 | ||
5728 | match | |
5729 | gfc_match_data_decl (void) | |
5730 | { | |
5731 | gfc_symbol *sym; | |
5732 | match m; | |
949d5b72 | 5733 | int elem; |
6de9cd9a | 5734 | |
5bab4c96 PT |
5735 | type_param_spec_list = NULL; |
5736 | decl_type_param_list = NULL; | |
5737 | ||
a8b3b0b6 | 5738 | num_idents_on_line = 0; |
f5acf0f2 | 5739 | |
e74f1cc8 | 5740 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5741 | if (m != MATCH_YES) |
5742 | return m; | |
5743 | ||
2e23972e | 5744 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5745 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5746 | { |
bc21d315 | 5747 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5748 | |
5749 | if (sym == NULL) | |
5750 | { | |
5751 | m = MATCH_ERROR; | |
5752 | goto cleanup; | |
5753 | } | |
5754 | ||
bc21d315 | 5755 | current_ts.u.derived = sym; |
6de9cd9a DN |
5756 | } |
5757 | ||
5758 | m = match_attr_spec (); | |
5759 | if (m == MATCH_ERROR) | |
5760 | { | |
5761 | m = MATCH_NO; | |
5762 | goto cleanup; | |
5763 | } | |
5764 | ||
8b704316 PT |
5765 | if (current_ts.type == BT_CLASS |
5766 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5767 | goto ok; | |
5768 | ||
2e23972e JW |
5769 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5770 | && current_ts.u.derived->components == NULL | |
bc21d315 | 5771 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
5772 | { |
5773 | ||
f6288c24 | 5774 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
5775 | goto ok; |
5776 | ||
bf9f15ee PT |
5777 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED |
5778 | && current_ts.u.derived == gfc_current_block ()) | |
5779 | goto ok; | |
5780 | ||
bc21d315 | 5781 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 5782 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 5783 | |
976e21f6 | 5784 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
5785 | which has its components defined, or be a structure definition |
5786 | actively being parsed. */ | |
5787 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 5788 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
5789 | || current_ts.u.derived->attr.zero_comp |
5790 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
5791 | goto ok; |
5792 | ||
a1b80ec7 JW |
5793 | gfc_error ("Derived type at %C has not been previously defined " |
5794 | "and so cannot appear in a derived type definition"); | |
5795 | m = MATCH_ERROR; | |
5796 | goto cleanup; | |
6de9cd9a DN |
5797 | } |
5798 | ||
5799 | ok: | |
5800 | /* If we have an old-style character declaration, and no new-style | |
5801 | attribute specifications, then there a comma is optional between | |
5802 | the type specification and the variable list. */ | |
5803 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5804 | gfc_match_char (','); | |
5805 | ||
949d5b72 PT |
5806 | /* Give the types/attributes to symbols that follow. Give the element |
5807 | a number so that repeat character length expressions can be copied. */ | |
5808 | elem = 1; | |
6de9cd9a DN |
5809 | for (;;) |
5810 | { | |
a8b3b0b6 | 5811 | num_idents_on_line++; |
949d5b72 | 5812 | m = variable_decl (elem++); |
6de9cd9a DN |
5813 | if (m == MATCH_ERROR) |
5814 | goto cleanup; | |
5815 | if (m == MATCH_NO) | |
5816 | break; | |
5817 | ||
5818 | if (gfc_match_eos () == MATCH_YES) | |
5819 | goto cleanup; | |
5820 | if (gfc_match_char (',') != MATCH_YES) | |
5821 | break; | |
5822 | } | |
5823 | ||
0f447a6e | 5824 | if (!gfc_error_flag_test ()) |
94903212 FR |
5825 | { |
5826 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5827 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5828 | here to avoid confusing the remaining matchers, even if there was an | |
5829 | error during variable_decl. We must flush any such errors. Note this | |
5830 | causes the parser to gracefully continue parsing the remaining input | |
5831 | as a structure body, which likely follows. */ | |
5832 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5833 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5834 | { | |
5835 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5836 | " at %C"); | |
5837 | /* Skip the bad variable_decl and line up for the start of the | |
5838 | structure body. */ | |
5839 | gfc_error_recovery (); | |
5840 | m = MATCH_YES; | |
5841 | goto cleanup; | |
5842 | } | |
5843 | ||
5844 | gfc_error ("Syntax error in data declaration at %C"); | |
5845 | } | |
5846 | ||
6de9cd9a DN |
5847 | m = MATCH_ERROR; |
5848 | ||
a9f6f1f2 JD |
5849 | gfc_free_data_all (gfc_current_ns); |
5850 | ||
6de9cd9a | 5851 | cleanup: |
5bab4c96 PT |
5852 | if (saved_kind_expr) |
5853 | gfc_free_expr (saved_kind_expr); | |
5854 | if (type_param_spec_list) | |
5855 | gfc_free_actual_arglist (type_param_spec_list); | |
5856 | if (decl_type_param_list) | |
5857 | gfc_free_actual_arglist (decl_type_param_list); | |
5858 | saved_kind_expr = NULL; | |
6de9cd9a DN |
5859 | gfc_free_array_spec (current_as); |
5860 | current_as = NULL; | |
5861 | return m; | |
5862 | } | |
5863 | ||
5864 | ||
5865 | /* Match a prefix associated with a function or subroutine | |
5866 | declaration. If the typespec pointer is nonnull, then a typespec | |
5867 | can be matched. Note that if nothing matches, MATCH_YES is | |
5868 | returned (the null string was matched). */ | |
5869 | ||
1c8bcdf7 PT |
5870 | match |
5871 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 5872 | { |
7389bce6 | 5873 | bool seen_type; |
e6c14898 DK |
5874 | bool seen_impure; |
5875 | bool found_prefix; | |
6de9cd9a DN |
5876 | |
5877 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
5878 | seen_type = false; |
5879 | seen_impure = false; | |
6de9cd9a | 5880 | |
3df684e2 DK |
5881 | gcc_assert (!gfc_matching_prefix); |
5882 | gfc_matching_prefix = true; | |
f37e928c | 5883 | |
e6c14898 | 5884 | do |
6de9cd9a | 5885 | { |
e6c14898 | 5886 | found_prefix = false; |
6de9cd9a | 5887 | |
70112e2a PT |
5888 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
5889 | corresponding attribute seems natural and distinguishes these | |
5890 | procedures from procedure types of PROC_MODULE, which these are | |
5891 | as well. */ | |
5892 | if (gfc_match ("module% ") == MATCH_YES) | |
5893 | { | |
5894 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
5895 | goto error; | |
5896 | ||
5897 | current_attr.module_procedure = 1; | |
5898 | found_prefix = true; | |
5899 | } | |
5900 | ||
e6c14898 DK |
5901 | if (!seen_type && ts != NULL |
5902 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
5903 | && gfc_match_space () == MATCH_YES) | |
5904 | { | |
6de9cd9a | 5905 | |
e6c14898 DK |
5906 | seen_type = true; |
5907 | found_prefix = true; | |
5908 | } | |
5909 | ||
5910 | if (gfc_match ("elemental% ") == MATCH_YES) | |
5911 | { | |
524af0d6 | 5912 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
5913 | goto error; |
5914 | ||
5915 | found_prefix = true; | |
5916 | } | |
5917 | ||
5918 | if (gfc_match ("pure% ") == MATCH_YES) | |
5919 | { | |
524af0d6 | 5920 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
5921 | goto error; |
5922 | ||
5923 | found_prefix = true; | |
5924 | } | |
6de9cd9a | 5925 | |
e6c14898 DK |
5926 | if (gfc_match ("recursive% ") == MATCH_YES) |
5927 | { | |
524af0d6 | 5928 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
5929 | goto error; |
5930 | ||
5931 | found_prefix = true; | |
5932 | } | |
5933 | ||
5934 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
5935 | attribute but rather only prevents ELEMENTAL routines from being | |
5936 | automatically PURE. */ | |
5937 | if (gfc_match ("impure% ") == MATCH_YES) | |
5938 | { | |
524af0d6 | 5939 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
5940 | goto error; |
5941 | ||
5942 | seen_impure = true; | |
5943 | found_prefix = true; | |
5944 | } | |
6de9cd9a | 5945 | } |
e6c14898 | 5946 | while (found_prefix); |
6de9cd9a | 5947 | |
e6c14898 DK |
5948 | /* IMPURE and PURE must not both appear, of course. */ |
5949 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 5950 | { |
e6c14898 DK |
5951 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
5952 | goto error; | |
6de9cd9a DN |
5953 | } |
5954 | ||
e6c14898 DK |
5955 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
5956 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 5957 | { |
524af0d6 | 5958 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 5959 | goto error; |
6de9cd9a DN |
5960 | } |
5961 | ||
5962 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 5963 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 5964 | |
3df684e2 | 5965 | gfc_matching_prefix = false; |
6de9cd9a | 5966 | return MATCH_YES; |
f37e928c DK |
5967 | |
5968 | error: | |
3df684e2 DK |
5969 | gcc_assert (gfc_matching_prefix); |
5970 | gfc_matching_prefix = false; | |
f37e928c | 5971 | return MATCH_ERROR; |
6de9cd9a DN |
5972 | } |
5973 | ||
5974 | ||
1c8bcdf7 | 5975 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 5976 | |
524af0d6 | 5977 | static bool |
636dff67 | 5978 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 5979 | { |
6442a6f4 PT |
5980 | if (dest->module_procedure) |
5981 | { | |
5982 | if (current_attr.elemental) | |
5983 | dest->elemental = 1; | |
5984 | ||
5985 | if (current_attr.pure) | |
5986 | dest->pure = 1; | |
5987 | ||
5988 | if (current_attr.recursive) | |
5989 | dest->recursive = 1; | |
5990 | ||
5991 | /* Module procedures are unusual in that the 'dest' is copied from | |
5992 | the interface declaration. However, this is an oportunity to | |
5993 | check that the submodule declaration is compliant with the | |
5994 | interface. */ | |
5995 | if (dest->elemental && !current_attr.elemental) | |
5996 | { | |
5997 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
5998 | "missing at %L", where); | |
5999 | return false; | |
6000 | } | |
6001 | ||
6002 | if (dest->pure && !current_attr.pure) | |
6003 | { | |
6004 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6005 | "missing at %L", where); | |
6006 | return false; | |
6007 | } | |
6008 | ||
6009 | if (dest->recursive && !current_attr.recursive) | |
6010 | { | |
6011 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6012 | "missing at %L", where); | |
6013 | return false; | |
6014 | } | |
6015 | ||
6016 | return true; | |
6017 | } | |
6de9cd9a | 6018 | |
524af0d6 JB |
6019 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6020 | return false; | |
6de9cd9a | 6021 | |
6442a6f4 PT |
6022 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6023 | return false; | |
6024 | ||
524af0d6 JB |
6025 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6026 | return false; | |
6de9cd9a | 6027 | |
524af0d6 | 6028 | return true; |
6de9cd9a DN |
6029 | } |
6030 | ||
6031 | ||
5bab4c96 PT |
6032 | /* Match a formal argument list or, if typeparam is true, a |
6033 | type_param_name_list. */ | |
6de9cd9a DN |
6034 | |
6035 | match | |
5bab4c96 PT |
6036 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6037 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6038 | { |
6039 | gfc_formal_arglist *head, *tail, *p, *q; | |
6040 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6041 | gfc_symbol *sym; | |
6042 | match m; | |
4668d6f9 | 6043 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6044 | |
6045 | head = tail = NULL; | |
6046 | ||
4668d6f9 PT |
6047 | /* Keep the interface formal argument list and null it so that the |
6048 | matching for the new declaration can be done. The numbers and | |
6049 | names of the arguments are checked here. The interface formal | |
6050 | arguments are retained in formal_arglist and the characteristics | |
6051 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6052 | in get_proc_name about the eventual need to copy the formal_arglist | |
6053 | and populate the formal namespace of the interface symbol. */ | |
6054 | if (progname->attr.module_procedure | |
6055 | && progname->attr.host_assoc) | |
6056 | { | |
6057 | formal = progname->formal; | |
6058 | progname->formal = NULL; | |
6059 | } | |
6060 | ||
6de9cd9a DN |
6061 | if (gfc_match_char ('(') != MATCH_YES) |
6062 | { | |
6063 | if (null_flag) | |
6064 | goto ok; | |
6065 | return MATCH_NO; | |
6066 | } | |
6067 | ||
6068 | if (gfc_match_char (')') == MATCH_YES) | |
6069 | goto ok; | |
6070 | ||
6071 | for (;;) | |
6072 | { | |
6073 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6074 | { |
6075 | sym = NULL; | |
276515e6 PT |
6076 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6077 | "Alternate-return argument at %C")) | |
9362a03b JW |
6078 | { |
6079 | m = MATCH_ERROR; | |
6080 | goto cleanup; | |
6081 | } | |
276515e6 PT |
6082 | else if (typeparam) |
6083 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6084 | } |
6de9cd9a DN |
6085 | else |
6086 | { | |
6087 | m = gfc_match_name (name); | |
6088 | if (m != MATCH_YES) | |
276515e6 PT |
6089 | { |
6090 | if(typeparam) | |
6091 | gfc_error_now ("A parameter name is required at %C"); | |
6092 | goto cleanup; | |
6093 | } | |
6de9cd9a | 6094 | |
5bab4c96 PT |
6095 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6096 | goto cleanup; | |
6097 | else if (typeparam | |
6098 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6099 | goto cleanup; |
6100 | } | |
6101 | ||
6102 | p = gfc_get_formal_arglist (); | |
6103 | ||
6104 | if (head == NULL) | |
6105 | head = tail = p; | |
6106 | else | |
6107 | { | |
6108 | tail->next = p; | |
6109 | tail = p; | |
6110 | } | |
6111 | ||
6112 | tail->sym = sym; | |
6113 | ||
6114 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6115 | dummy procedure. We don't apply these attributes to formal |
6116 | arguments of statement functions. */ | |
6de9cd9a | 6117 | if (sym != NULL && !st_flag |
524af0d6 JB |
6118 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6119 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6120 | { |
6121 | m = MATCH_ERROR; | |
6122 | goto cleanup; | |
6123 | } | |
6124 | ||
6125 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6126 | so check for it explicitly. After the statement is accepted, |
6127 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6128 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6129 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6130 | { | |
c4100eae | 6131 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6132 | sym->name); |
6133 | m = MATCH_ERROR; | |
6134 | goto cleanup; | |
6135 | } | |
6136 | ||
6137 | if (gfc_match_char (')') == MATCH_YES) | |
6138 | goto ok; | |
6139 | ||
6140 | m = gfc_match_char (','); | |
6141 | if (m != MATCH_YES) | |
6142 | { | |
de624bee PT |
6143 | if (typeparam) |
6144 | gfc_error_now ("Expected parameter list in type declaration " | |
6145 | "at %C"); | |
6146 | else | |
6147 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6148 | goto cleanup; |
6149 | } | |
6150 | } | |
6151 | ||
6152 | ok: | |
6153 | /* Check for duplicate symbols in the formal argument list. */ | |
6154 | if (head != NULL) | |
6155 | { | |
6156 | for (p = head; p->next; p = p->next) | |
6157 | { | |
6158 | if (p->sym == NULL) | |
6159 | continue; | |
6160 | ||
6161 | for (q = p->next; q; q = q->next) | |
6162 | if (p->sym == q->sym) | |
6163 | { | |
de624bee PT |
6164 | if (typeparam) |
6165 | gfc_error_now ("Duplicate name %qs in parameter " | |
6166 | "list at %C", p->sym->name); | |
6167 | else | |
6168 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6169 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6170 | |
6171 | m = MATCH_ERROR; | |
6172 | goto cleanup; | |
6173 | } | |
6174 | } | |
6175 | } | |
6176 | ||
524af0d6 | 6177 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6178 | { |
6179 | m = MATCH_ERROR; | |
6180 | goto cleanup; | |
6181 | } | |
6182 | ||
e9d9b48d PT |
6183 | /* gfc_error_now used in following and return with MATCH_YES because |
6184 | doing otherwise results in a cascade of extraneous errors and in | |
6185 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6186 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6187 | { |
0ef5fbc1 PT |
6188 | bool arg_count_mismatch = false; |
6189 | ||
6190 | if (!formal && head) | |
6191 | arg_count_mismatch = true; | |
6192 | ||
6193 | /* Abbreviated module procedure declaration is not meant to have any | |
6194 | formal arguments! */ | |
e9d9b48d | 6195 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6196 | arg_count_mismatch = true; |
6197 | ||
4668d6f9 PT |
6198 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6199 | { | |
6200 | if ((p->next != NULL && q->next == NULL) | |
6201 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6202 | arg_count_mismatch = true; |
4668d6f9 PT |
6203 | else if ((p->sym == NULL && q->sym == NULL) |
6204 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6205 | continue; | |
6206 | else | |
6207 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6208 | "argument names (%s/%s) at %C", | |
6209 | p->sym->name, q->sym->name); | |
6210 | } | |
0ef5fbc1 PT |
6211 | |
6212 | if (arg_count_mismatch) | |
6213 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6214 | "formal arguments at %C"); | |
4668d6f9 PT |
6215 | } |
6216 | ||
6de9cd9a DN |
6217 | return MATCH_YES; |
6218 | ||
6219 | cleanup: | |
6220 | gfc_free_formal_arglist (head); | |
6221 | return m; | |
6222 | } | |
6223 | ||
6224 | ||
6225 | /* Match a RESULT specification following a function declaration or | |
6226 | ENTRY statement. Also matches the end-of-statement. */ | |
6227 | ||
6228 | static match | |
66e4ab31 | 6229 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6230 | { |
6231 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6232 | gfc_symbol *r; | |
6233 | match m; | |
6234 | ||
6235 | if (gfc_match (" result (") != MATCH_YES) | |
6236 | return MATCH_NO; | |
6237 | ||
6238 | m = gfc_match_name (name); | |
6239 | if (m != MATCH_YES) | |
6240 | return m; | |
6241 | ||
a8b3b0b6 CR |
6242 | /* Get the right paren, and that's it because there could be the |
6243 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6244 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6245 | { |
a8b3b0b6 | 6246 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6247 | return MATCH_ERROR; |
6248 | } | |
6249 | ||
6250 | if (strcmp (function->name, name) == 0) | |
6251 | { | |
636dff67 | 6252 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6253 | return MATCH_ERROR; |
6254 | } | |
6255 | ||
6256 | if (gfc_get_symbol (name, NULL, &r)) | |
6257 | return MATCH_ERROR; | |
6258 | ||
524af0d6 | 6259 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6260 | return MATCH_ERROR; |
6261 | ||
6262 | *result = r; | |
6263 | ||
6264 | return MATCH_YES; | |
6265 | } | |
6266 | ||
6267 | ||
a8b3b0b6 CR |
6268 | /* Match a function suffix, which could be a combination of a result |
6269 | clause and BIND(C), either one, or neither. The draft does not | |
6270 | require them to come in a specific order. */ | |
6271 | ||
6272 | match | |
6273 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6274 | { | |
6275 | match is_bind_c; /* Found bind(c). */ | |
6276 | match is_result; /* Found result clause. */ | |
6277 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6278 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6279 | bool allow_binding_name; |
a8b3b0b6 CR |
6280 | |
6281 | /* Initialize to having found nothing. */ | |
6282 | found_match = MATCH_NO; | |
f5acf0f2 | 6283 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6284 | is_result = MATCH_NO; |
6285 | ||
6286 | /* Get the next char to narrow between result and bind(c). */ | |
6287 | gfc_gobble_whitespace (); | |
8fc541d3 | 6288 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6289 | |
1eabf70a TB |
6290 | /* C binding names are not allowed for internal procedures. */ |
6291 | if (gfc_current_state () == COMP_CONTAINS | |
6292 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6293 | allow_binding_name = false; | |
6294 | else | |
6295 | allow_binding_name = true; | |
6296 | ||
a8b3b0b6 CR |
6297 | switch (peek_char) |
6298 | { | |
6299 | case 'r': | |
6300 | /* Look for result clause. */ | |
6301 | is_result = match_result (sym, result); | |
6302 | if (is_result == MATCH_YES) | |
6303 | { | |
6304 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6305 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6306 | /* We've found the result clause and possibly bind(c). */ |
6307 | found_match = MATCH_YES; | |
6308 | } | |
6309 | else | |
6310 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6311 | found_match = is_result; |
a8b3b0b6 CR |
6312 | break; |
6313 | case 'b': | |
6314 | /* Look for bind(c) first. */ | |
1eabf70a | 6315 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6316 | if (is_bind_c == MATCH_YES) |
6317 | { | |
6318 | /* Now see if a result clause followed it. */ | |
6319 | is_result = match_result (sym, result); | |
6320 | found_match = MATCH_YES; | |
6321 | } | |
6322 | else | |
6323 | { | |
6324 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6325 | found_match = MATCH_ERROR; | |
6326 | } | |
6327 | break; | |
6328 | default: | |
6329 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6330 | found_match = MATCH_ERROR; | |
6331 | break; | |
6332 | } | |
6333 | ||
a8b3b0b6 | 6334 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6335 | { |
1eabf70a | 6336 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6337 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6338 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6339 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6340 | "at %L may not be specified for an internal " | |
6341 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6342 | return MATCH_ERROR; |
6343 | ||
524af0d6 | 6344 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6345 | return MATCH_ERROR; |
6346 | } | |
f5acf0f2 | 6347 | |
a8b3b0b6 CR |
6348 | return found_match; |
6349 | } | |
6350 | ||
6351 | ||
3070bab4 JW |
6352 | /* Procedure pointer return value without RESULT statement: |
6353 | Add "hidden" result variable named "ppr@". */ | |
6354 | ||
524af0d6 | 6355 | static bool |
3070bab4 JW |
6356 | add_hidden_procptr_result (gfc_symbol *sym) |
6357 | { | |
6358 | bool case1,case2; | |
6359 | ||
6360 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6361 | return false; |
3070bab4 JW |
6362 | |
6363 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6364 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6365 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6366 | && sym->attr.external; | |
6367 | /* Second usage case: INTERFACE statements. */ | |
6368 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6369 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6370 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6371 | ||
6372 | if (case1 || case2) | |
6373 | { | |
6374 | gfc_symtree *stree; | |
6375 | if (case1) | |
08a6b8e0 | 6376 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 6377 | else if (case2) |
c73b6478 JW |
6378 | { |
6379 | gfc_symtree *st2; | |
08a6b8e0 | 6380 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6381 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6382 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6383 | stree->n.sym->refs++; |
c73b6478 | 6384 | } |
3070bab4 JW |
6385 | sym->result = stree->n.sym; |
6386 | ||
6387 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6388 | sym->result->attr.pointer = sym->attr.pointer; | |
6389 | sym->result->attr.external = sym->attr.external; | |
6390 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6391 | sym->result->ts = sym->ts; |
3070bab4 JW |
6392 | sym->attr.proc_pointer = 0; |
6393 | sym->attr.pointer = 0; | |
6394 | sym->attr.external = 0; | |
6395 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6396 | { | |
6397 | sym->result->attr.pointer = 0; | |
6398 | sym->result->attr.proc_pointer = 1; | |
6399 | } | |
6400 | ||
6401 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6402 | } | |
6403 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6404 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6405 | && sym->result && sym->result != sym && sym->result->attr.external | |
6406 | && sym == gfc_current_ns->proc_name | |
6407 | && sym == sym->result->ns->proc_name | |
6408 | && strcmp ("ppr@", sym->result->name) == 0) | |
6409 | { | |
6410 | sym->result->attr.proc_pointer = 1; | |
6411 | sym->attr.pointer = 0; | |
524af0d6 | 6412 | return true; |
3070bab4 JW |
6413 | } |
6414 | else | |
524af0d6 | 6415 | return false; |
3070bab4 JW |
6416 | } |
6417 | ||
6418 | ||
713485cc JW |
6419 | /* Match the interface for a PROCEDURE declaration, |
6420 | including brackets (R1212). */ | |
69773742 JW |
6421 | |
6422 | static match | |
713485cc | 6423 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6424 | { |
6425 | match m; | |
3276e0b3 | 6426 | gfc_symtree *st; |
69773742 | 6427 | locus old_loc, entry_loc; |
3276e0b3 PT |
6428 | gfc_namespace *old_ns = gfc_current_ns; |
6429 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6430 | |
3276e0b3 | 6431 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6432 | gfc_clear_ts (¤t_ts); |
6433 | ||
6434 | if (gfc_match (" (") != MATCH_YES) | |
6435 | { | |
6436 | gfc_current_locus = entry_loc; | |
6437 | return MATCH_NO; | |
6438 | } | |
6439 | ||
6440 | /* Get the type spec. for the procedure interface. */ | |
6441 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6442 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6443 | gfc_gobble_whitespace (); |
8fc541d3 | 6444 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6445 | goto got_ts; |
6446 | ||
6447 | if (m == MATCH_ERROR) | |
6448 | return m; | |
6449 | ||
3276e0b3 | 6450 | /* Procedure interface is itself a procedure. */ |
69773742 | 6451 | gfc_current_locus = old_loc; |
3276e0b3 | 6452 | m = gfc_match_name (name); |
69773742 | 6453 | |
3276e0b3 PT |
6454 | /* First look to see if it is already accessible in the current |
6455 | namespace because it is use associated or contained. */ | |
6456 | st = NULL; | |
6457 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6458 | return MATCH_ERROR; | |
6459 | ||
6460 | /* If it is still not found, then try the parent namespace, if it | |
6461 | exists and create the symbol there if it is still not found. */ | |
6462 | if (gfc_current_ns->parent) | |
6463 | gfc_current_ns = gfc_current_ns->parent; | |
6464 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6465 | return MATCH_ERROR; | |
6466 | ||
6467 | gfc_current_ns = old_ns; | |
6468 | *proc_if = st->n.sym; | |
69773742 | 6469 | |
713485cc | 6470 | if (*proc_if) |
69773742 | 6471 | { |
713485cc | 6472 | (*proc_if)->refs++; |
bb343a6c TB |
6473 | /* Resolve interface if possible. That way, attr.procedure is only set |
6474 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6475 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6476 | while ((*proc_if)->ts.interface |
6477 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6478 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6479 | |
0e8d854e JW |
6480 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6481 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6482 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6483 | (*proc_if)->name, NULL)) |
0e8d854e | 6484 | return MATCH_ERROR; |
69773742 JW |
6485 | } |
6486 | ||
6487 | got_ts: | |
69773742 JW |
6488 | if (gfc_match (" )") != MATCH_YES) |
6489 | { | |
6490 | gfc_current_locus = entry_loc; | |
6491 | return MATCH_NO; | |
6492 | } | |
6493 | ||
713485cc JW |
6494 | return MATCH_YES; |
6495 | } | |
6496 | ||
6497 | ||
6498 | /* Match a PROCEDURE declaration (R1211). */ | |
6499 | ||
6500 | static match | |
6501 | match_procedure_decl (void) | |
6502 | { | |
6503 | match m; | |
6504 | gfc_symbol *sym, *proc_if = NULL; | |
6505 | int num; | |
6506 | gfc_expr *initializer = NULL; | |
6507 | ||
1cc0e193 | 6508 | /* Parse interface (with brackets). */ |
713485cc JW |
6509 | m = match_procedure_interface (&proc_if); |
6510 | if (m != MATCH_YES) | |
6511 | return m; | |
6512 | ||
6513 | /* Parse attributes (with colons). */ | |
69773742 JW |
6514 | m = match_attr_spec(); |
6515 | if (m == MATCH_ERROR) | |
6516 | return MATCH_ERROR; | |
6517 | ||
0859be17 TB |
6518 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6519 | { | |
6520 | current_attr.is_bind_c = 1; | |
6521 | has_name_equals = 0; | |
6522 | curr_binding_label = NULL; | |
6523 | } | |
6524 | ||
69773742 JW |
6525 | /* Get procedure symbols. */ |
6526 | for(num=1;;num++) | |
6527 | { | |
69773742 JW |
6528 | m = gfc_match_symbol (&sym, 0); |
6529 | if (m == MATCH_NO) | |
6530 | goto syntax; | |
6531 | else if (m == MATCH_ERROR) | |
6532 | return m; | |
6533 | ||
6534 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6535 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6536 | return MATCH_ERROR; |
6537 | ||
6538 | if (sym->attr.is_bind_c) | |
6539 | { | |
6540 | /* Check for C1218. */ | |
6541 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6542 | { | |
6543 | gfc_error ("BIND(C) attribute at %C requires " | |
6544 | "an interface with BIND(C)"); | |
6545 | return MATCH_ERROR; | |
6546 | } | |
6547 | /* Check for C1217. */ | |
6548 | if (has_name_equals && sym->attr.pointer) | |
6549 | { | |
6550 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6551 | "POINTER attribute at %C"); | |
6552 | return MATCH_ERROR; | |
6553 | } | |
6554 | if (has_name_equals && sym->attr.dummy) | |
6555 | { | |
6556 | gfc_error ("Dummy procedure at %C may not have " | |
6557 | "BIND(C) attribute with NAME"); | |
6558 | return MATCH_ERROR; | |
6559 | } | |
6560 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6561 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6562 | return MATCH_ERROR; |
6563 | } | |
6564 | ||
524af0d6 | 6565 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6566 | return MATCH_ERROR; |
3070bab4 | 6567 | |
524af0d6 | 6568 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6569 | sym = sym->result; |
6570 | ||
524af0d6 | 6571 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6572 | return MATCH_ERROR; |
6573 | ||
6574 | /* Set interface. */ | |
6575 | if (proc_if != NULL) | |
6cc309c9 | 6576 | { |
1d146030 JW |
6577 | if (sym->ts.type != BT_UNKNOWN) |
6578 | { | |
c4100eae | 6579 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6580 | sym->name, &gfc_current_locus, |
6581 | gfc_basic_typename (sym->ts.type)); | |
6582 | return MATCH_ERROR; | |
6583 | } | |
32d99e68 | 6584 | sym->ts.interface = proc_if; |
6cc309c9 | 6585 | sym->attr.untyped = 1; |
c73b6478 | 6586 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6587 | } |
69773742 JW |
6588 | else if (current_ts.type != BT_UNKNOWN) |
6589 | { | |
524af0d6 | 6590 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6591 | return MATCH_ERROR; |
32d99e68 JW |
6592 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6593 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6594 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6595 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6596 | sym->attr.function = 1; |
c73b6478 | 6597 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6598 | } |
6599 | ||
8fb74da4 JW |
6600 | if (gfc_match (" =>") == MATCH_YES) |
6601 | { | |
6602 | if (!current_attr.pointer) | |
6603 | { | |
6604 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6605 | m = MATCH_ERROR; | |
6606 | goto cleanup; | |
6607 | } | |
6608 | ||
80f95228 | 6609 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6610 | if (m != MATCH_YES) |
6611 | goto cleanup; | |
6612 | ||
524af0d6 | 6613 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6614 | goto cleanup; |
6615 | ||
6616 | } | |
6617 | ||
69773742 JW |
6618 | if (gfc_match_eos () == MATCH_YES) |
6619 | return MATCH_YES; | |
6620 | if (gfc_match_char (',') != MATCH_YES) | |
6621 | goto syntax; | |
6622 | } | |
6623 | ||
6624 | syntax: | |
6625 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6626 | return MATCH_ERROR; | |
8fb74da4 JW |
6627 | |
6628 | cleanup: | |
6629 | /* Free stuff up and return. */ | |
6630 | gfc_free_expr (initializer); | |
6631 | return m; | |
69773742 JW |
6632 | } |
6633 | ||
6634 | ||
713485cc JW |
6635 | static match |
6636 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6637 | ||
6638 | ||
6639 | /* Match a procedure pointer component declaration (R445). */ | |
6640 | ||
6641 | static match | |
6642 | match_ppc_decl (void) | |
6643 | { | |
6644 | match m; | |
6645 | gfc_symbol *proc_if = NULL; | |
6646 | gfc_typespec ts; | |
6647 | int num; | |
6648 | gfc_component *c; | |
6649 | gfc_expr *initializer = NULL; | |
6650 | gfc_typebound_proc* tb; | |
6651 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6652 | ||
6653 | /* Parse interface (with brackets). */ | |
6654 | m = match_procedure_interface (&proc_if); | |
6655 | if (m != MATCH_YES) | |
6656 | goto syntax; | |
6657 | ||
6658 | /* Parse attributes. */ | |
6659 | tb = XCNEW (gfc_typebound_proc); | |
6660 | tb->where = gfc_current_locus; | |
6661 | m = match_binding_attributes (tb, false, true); | |
6662 | if (m == MATCH_ERROR) | |
6663 | return m; | |
6664 | ||
713485cc JW |
6665 | gfc_clear_attr (¤t_attr); |
6666 | current_attr.procedure = 1; | |
6667 | current_attr.proc_pointer = 1; | |
6668 | current_attr.access = tb->access; | |
6669 | current_attr.flavor = FL_PROCEDURE; | |
6670 | ||
6671 | /* Match the colons (required). */ | |
6672 | if (gfc_match (" ::") != MATCH_YES) | |
6673 | { | |
a4d9b221 | 6674 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6675 | return MATCH_ERROR; |
6676 | } | |
6677 | ||
6678 | /* Check for C450. */ | |
6679 | if (!tb->nopass && proc_if == NULL) | |
6680 | { | |
6681 | gfc_error("NOPASS or explicit interface required at %C"); | |
6682 | return MATCH_ERROR; | |
6683 | } | |
6684 | ||
524af0d6 | 6685 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6686 | return MATCH_ERROR; |
6687 | ||
713485cc JW |
6688 | /* Match PPC names. */ |
6689 | ts = current_ts; | |
6690 | for(num=1;;num++) | |
6691 | { | |
6692 | m = gfc_match_name (name); | |
6693 | if (m == MATCH_NO) | |
6694 | goto syntax; | |
6695 | else if (m == MATCH_ERROR) | |
6696 | return m; | |
6697 | ||
524af0d6 | 6698 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6699 | return MATCH_ERROR; |
6700 | ||
6701 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6702 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6703 | return MATCH_ERROR; |
6704 | ||
524af0d6 | 6705 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6706 | return MATCH_ERROR; |
6707 | ||
524af0d6 | 6708 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6709 | return MATCH_ERROR; |
6710 | ||
2be03814 TB |
6711 | if (num == 1) |
6712 | c->tb = tb; | |
6713 | else | |
6714 | { | |
6715 | c->tb = XCNEW (gfc_typebound_proc); | |
6716 | c->tb->where = gfc_current_locus; | |
6717 | *c->tb = *tb; | |
6718 | } | |
90661f26 | 6719 | |
713485cc JW |
6720 | /* Set interface. */ |
6721 | if (proc_if != NULL) | |
6722 | { | |
6723 | c->ts.interface = proc_if; | |
6724 | c->attr.untyped = 1; | |
6725 | c->attr.if_source = IFSRC_IFBODY; | |
6726 | } | |
6727 | else if (ts.type != BT_UNKNOWN) | |
6728 | { | |
6729 | c->ts = ts; | |
6730 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 6731 | c->ts.interface->result = c->ts.interface; |
713485cc | 6732 | c->ts.interface->ts = ts; |
d91909c0 | 6733 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 6734 | c->ts.interface->attr.function = 1; |
d91909c0 | 6735 | c->attr.function = 1; |
713485cc JW |
6736 | c->attr.if_source = IFSRC_UNKNOWN; |
6737 | } | |
6738 | ||
6739 | if (gfc_match (" =>") == MATCH_YES) | |
6740 | { | |
80f95228 | 6741 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
6742 | if (m != MATCH_YES) |
6743 | { | |
6744 | gfc_free_expr (initializer); | |
6745 | return m; | |
6746 | } | |
6747 | c->initializer = initializer; | |
6748 | } | |
6749 | ||
6750 | if (gfc_match_eos () == MATCH_YES) | |
6751 | return MATCH_YES; | |
6752 | if (gfc_match_char (',') != MATCH_YES) | |
6753 | goto syntax; | |
6754 | } | |
6755 | ||
6756 | syntax: | |
6757 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6758 | return MATCH_ERROR; | |
6759 | } | |
6760 | ||
6761 | ||
69773742 JW |
6762 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6763 | ||
6764 | static match | |
6765 | match_procedure_in_interface (void) | |
6766 | { | |
6767 | match m; | |
6768 | gfc_symbol *sym; | |
6769 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 6770 | locus old_locus; |
69773742 JW |
6771 | |
6772 | if (current_interface.type == INTERFACE_NAMELESS | |
6773 | || current_interface.type == INTERFACE_ABSTRACT) | |
6774 | { | |
6775 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6776 | return MATCH_ERROR; | |
6777 | } | |
6778 | ||
a6fcd41a TB |
6779 | /* Check if the F2008 optional double colon appears. */ |
6780 | gfc_gobble_whitespace (); | |
6781 | old_locus = gfc_current_locus; | |
6782 | if (gfc_match ("::") == MATCH_YES) | |
6783 | { | |
524af0d6 JB |
6784 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6785 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
6786 | return MATCH_ERROR; |
6787 | } | |
6788 | else | |
6789 | gfc_current_locus = old_locus; | |
6790 | ||
69773742 JW |
6791 | for(;;) |
6792 | { | |
6793 | m = gfc_match_name (name); | |
6794 | if (m == MATCH_NO) | |
6795 | goto syntax; | |
6796 | else if (m == MATCH_ERROR) | |
6797 | return m; | |
6798 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6799 | return MATCH_ERROR; | |
6800 | ||
524af0d6 | 6801 | if (!gfc_add_interface (sym)) |
69773742 JW |
6802 | return MATCH_ERROR; |
6803 | ||
69773742 JW |
6804 | if (gfc_match_eos () == MATCH_YES) |
6805 | break; | |
6806 | if (gfc_match_char (',') != MATCH_YES) | |
6807 | goto syntax; | |
6808 | } | |
6809 | ||
6810 | return MATCH_YES; | |
6811 | ||
6812 | syntax: | |
6813 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6814 | return MATCH_ERROR; | |
6815 | } | |
6816 | ||
6817 | ||
6818 | /* General matcher for PROCEDURE declarations. */ | |
6819 | ||
30b608eb DK |
6820 | static match match_procedure_in_type (void); |
6821 | ||
69773742 JW |
6822 | match |
6823 | gfc_match_procedure (void) | |
6824 | { | |
6825 | match m; | |
6826 | ||
6827 | switch (gfc_current_state ()) | |
6828 | { | |
6829 | case COMP_NONE: | |
6830 | case COMP_PROGRAM: | |
6831 | case COMP_MODULE: | |
4668d6f9 | 6832 | case COMP_SUBMODULE: |
69773742 JW |
6833 | case COMP_SUBROUTINE: |
6834 | case COMP_FUNCTION: | |
3547d57e | 6835 | case COMP_BLOCK: |
69773742 JW |
6836 | m = match_procedure_decl (); |
6837 | break; | |
6838 | case COMP_INTERFACE: | |
6839 | m = match_procedure_in_interface (); | |
6840 | break; | |
6841 | case COMP_DERIVED: | |
713485cc JW |
6842 | m = match_ppc_decl (); |
6843 | break; | |
30b608eb DK |
6844 | case COMP_DERIVED_CONTAINS: |
6845 | m = match_procedure_in_type (); | |
6846 | break; | |
69773742 JW |
6847 | default: |
6848 | return MATCH_NO; | |
6849 | } | |
6850 | ||
6851 | if (m != MATCH_YES) | |
6852 | return m; | |
6853 | ||
524af0d6 | 6854 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
6855 | return MATCH_ERROR; |
6856 | ||
6857 | return m; | |
6858 | } | |
6859 | ||
6860 | ||
c3005b0f DK |
6861 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
6862 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
6863 | parser-state-stack to find out whether we're in a module. */ | |
6864 | ||
6865 | static void | |
73e42eef | 6866 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
6867 | { |
6868 | bool in_module; | |
6869 | ||
6870 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
6871 | && (gfc_state_stack->previous->state == COMP_MODULE |
6872 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
6873 | |
6874 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
6875 | } | |
6876 | ||
6877 | ||
6de9cd9a DN |
6878 | /* Match a function declaration. */ |
6879 | ||
6880 | match | |
6881 | gfc_match_function_decl (void) | |
6882 | { | |
6883 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6884 | gfc_symbol *sym, *result; | |
6885 | locus old_loc; | |
6886 | match m; | |
a8b3b0b6 | 6887 | match suffix_match; |
f5acf0f2 | 6888 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
6889 | |
6890 | if (gfc_current_state () != COMP_NONE | |
6891 | && gfc_current_state () != COMP_INTERFACE | |
6892 | && gfc_current_state () != COMP_CONTAINS) | |
6893 | return MATCH_NO; | |
6894 | ||
6895 | gfc_clear_ts (¤t_ts); | |
6896 | ||
63645982 | 6897 | old_loc = gfc_current_locus; |
6de9cd9a | 6898 | |
1c8bcdf7 | 6899 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
6900 | if (m != MATCH_YES) |
6901 | { | |
63645982 | 6902 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6903 | return m; |
6904 | } | |
6905 | ||
6906 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
6907 | { | |
63645982 | 6908 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6909 | return MATCH_NO; |
6910 | } | |
4668d6f9 | 6911 | |
1a492601 | 6912 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 6913 | return MATCH_ERROR; |
3070bab4 | 6914 | |
524af0d6 | 6915 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6916 | sym = sym->result; |
6917 | ||
4668d6f9 PT |
6918 | if (current_attr.module_procedure) |
6919 | sym->attr.module_procedure = 1; | |
6920 | ||
6de9cd9a DN |
6921 | gfc_new_block = sym; |
6922 | ||
6923 | m = gfc_match_formal_arglist (sym, 0, 0); | |
6924 | if (m == MATCH_NO) | |
2b9a33ae TS |
6925 | { |
6926 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 6927 | "definition at %C"); |
2b9a33ae TS |
6928 | m = MATCH_ERROR; |
6929 | goto cleanup; | |
6930 | } | |
6de9cd9a DN |
6931 | else if (m == MATCH_ERROR) |
6932 | goto cleanup; | |
6933 | ||
6934 | result = NULL; | |
6935 | ||
a8b3b0b6 CR |
6936 | /* According to the draft, the bind(c) and result clause can |
6937 | come in either order after the formal_arg_list (i.e., either | |
6938 | can be first, both can exist together or by themselves or neither | |
6939 | one). Therefore, the match_result can't match the end of the | |
6940 | string, and check for the bind(c) or result clause in either order. */ | |
6941 | found_match = gfc_match_eos (); | |
6942 | ||
6943 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
6944 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6945 | not allowed for procedures. */ | |
6946 | if (sym->attr.is_bind_c == 1) | |
6947 | { | |
6948 | sym->attr.is_bind_c = 0; | |
6949 | if (sym->old_symbol != NULL) | |
6950 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6951 | "variables or common blocks", | |
6952 | &(sym->old_symbol->declared_at)); | |
6953 | else | |
6954 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6955 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
6956 | } |
6957 | ||
a8b3b0b6 | 6958 | if (found_match != MATCH_YES) |
6de9cd9a | 6959 | { |
a8b3b0b6 CR |
6960 | /* If we haven't found the end-of-statement, look for a suffix. */ |
6961 | suffix_match = gfc_match_suffix (sym, &result); | |
6962 | if (suffix_match == MATCH_YES) | |
6963 | /* Need to get the eos now. */ | |
6964 | found_match = gfc_match_eos (); | |
6965 | else | |
6966 | found_match = suffix_match; | |
6de9cd9a DN |
6967 | } |
6968 | ||
a8b3b0b6 CR |
6969 | if(found_match != MATCH_YES) |
6970 | m = MATCH_ERROR; | |
6de9cd9a DN |
6971 | else |
6972 | { | |
a8b3b0b6 CR |
6973 | /* Make changes to the symbol. */ |
6974 | m = MATCH_ERROR; | |
f5acf0f2 | 6975 | |
524af0d6 | 6976 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 6977 | goto cleanup; |
f5acf0f2 | 6978 | |
70112e2a | 6979 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 6980 | goto cleanup; |
6de9cd9a | 6981 | |
70112e2a PT |
6982 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6983 | { | |
6984 | if(!sym->attr.module_procedure) | |
6985 | goto cleanup; | |
6986 | else | |
6987 | gfc_error_check (); | |
6988 | } | |
6989 | ||
a99d95a2 | 6990 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 6991 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
6992 | sym->declared_at = old_loc; |
6993 | if (current_ts.type != BT_UNKNOWN) | |
6994 | current_ts.kind = -1; | |
6995 | else | |
6996 | current_ts.kind = 0; | |
1c8bcdf7 | 6997 | |
a8b3b0b6 CR |
6998 | if (result == NULL) |
6999 | { | |
6de7294f | 7000 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7001 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7002 | goto cleanup; |
a8b3b0b6 CR |
7003 | sym->result = sym; |
7004 | } | |
7005 | else | |
7006 | { | |
6de7294f | 7007 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7008 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7009 | goto cleanup; |
a8b3b0b6 CR |
7010 | sym->result = result; |
7011 | } | |
7012 | ||
c3005b0f | 7013 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 7014 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 7015 | |
a8b3b0b6 CR |
7016 | return MATCH_YES; |
7017 | } | |
6de9cd9a DN |
7018 | |
7019 | cleanup: | |
63645982 | 7020 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7021 | return m; |
7022 | } | |
7023 | ||
636dff67 SK |
7024 | |
7025 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7026 | pass the name of the entry, rather than the gfc_current_block name, and | |
7027 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7028 | |
7029 | static bool | |
3a43b5b3 TB |
7030 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7031 | locus *where) | |
68ea355b PT |
7032 | { |
7033 | gfc_gsymbol *s; | |
32e8bb8e | 7034 | enum gfc_symbol_type type; |
68ea355b | 7035 | |
7389bce6 | 7036 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7037 | |
f11de7c5 TB |
7038 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7039 | name is a global identifier. */ | |
7040 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7041 | { |
f11de7c5 TB |
7042 | s = gfc_get_gsymbol (name); |
7043 | ||
7044 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7045 | { | |
3a43b5b3 | 7046 | gfc_global_used (s, where); |
f11de7c5 TB |
7047 | return false; |
7048 | } | |
7049 | else | |
7050 | { | |
7051 | s->type = type; | |
77f8682b | 7052 | s->sym_name = name; |
3a43b5b3 | 7053 | s->where = *where; |
f11de7c5 TB |
7054 | s->defined = 1; |
7055 | s->ns = gfc_current_ns; | |
7056 | } | |
68ea355b | 7057 | } |
f11de7c5 TB |
7058 | |
7059 | /* Don't add the symbol multiple times. */ | |
7060 | if (binding_label | |
7061 | && (!gfc_notification_std (GFC_STD_F2008) | |
7062 | || strcmp (name, binding_label) != 0)) | |
7063 | { | |
7064 | s = gfc_get_gsymbol (binding_label); | |
7065 | ||
7066 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7067 | { | |
3a43b5b3 | 7068 | gfc_global_used (s, where); |
f11de7c5 TB |
7069 | return false; |
7070 | } | |
7071 | else | |
7072 | { | |
7073 | s->type = type; | |
77f8682b | 7074 | s->sym_name = name; |
f11de7c5 | 7075 | s->binding_label = binding_label; |
3a43b5b3 | 7076 | s->where = *where; |
f11de7c5 TB |
7077 | s->defined = 1; |
7078 | s->ns = gfc_current_ns; | |
7079 | } | |
7080 | } | |
7081 | ||
7082 | return true; | |
68ea355b | 7083 | } |
6de9cd9a | 7084 | |
636dff67 | 7085 | |
6de9cd9a DN |
7086 | /* Match an ENTRY statement. */ |
7087 | ||
7088 | match | |
7089 | gfc_match_entry (void) | |
7090 | { | |
3d79abbd PB |
7091 | gfc_symbol *proc; |
7092 | gfc_symbol *result; | |
7093 | gfc_symbol *entry; | |
6de9cd9a DN |
7094 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7095 | gfc_compile_state state; | |
7096 | match m; | |
3d79abbd | 7097 | gfc_entry_list *el; |
c96cfa49 | 7098 | locus old_loc; |
1a492601 | 7099 | bool module_procedure; |
bc3e7a8c TB |
7100 | char peek_char; |
7101 | match is_bind_c; | |
6de9cd9a DN |
7102 | |
7103 | m = gfc_match_name (name); | |
7104 | if (m != MATCH_YES) | |
7105 | return m; | |
7106 | ||
524af0d6 | 7107 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7108 | return MATCH_ERROR; |
7109 | ||
3d79abbd | 7110 | state = gfc_current_state (); |
4c93c95a | 7111 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7112 | { |
4c93c95a FXC |
7113 | switch (state) |
7114 | { | |
7115 | case COMP_PROGRAM: | |
7116 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7117 | break; | |
7118 | case COMP_MODULE: | |
7119 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7120 | break; | |
4668d6f9 PT |
7121 | case COMP_SUBMODULE: |
7122 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7123 | break; | |
4c93c95a | 7124 | case COMP_BLOCK_DATA: |
636dff67 SK |
7125 | gfc_error ("ENTRY statement at %C cannot appear within " |
7126 | "a BLOCK DATA"); | |
4c93c95a FXC |
7127 | break; |
7128 | case COMP_INTERFACE: | |
636dff67 SK |
7129 | gfc_error ("ENTRY statement at %C cannot appear within " |
7130 | "an INTERFACE"); | |
4c93c95a | 7131 | break; |
f6288c24 FR |
7132 | case COMP_STRUCTURE: |
7133 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7134 | "a STRUCTURE block"); | |
7135 | break; | |
4c93c95a | 7136 | case COMP_DERIVED: |
636dff67 SK |
7137 | gfc_error ("ENTRY statement at %C cannot appear within " |
7138 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7139 | break; |
7140 | case COMP_IF: | |
636dff67 SK |
7141 | gfc_error ("ENTRY statement at %C cannot appear within " |
7142 | "an IF-THEN block"); | |
4c93c95a FXC |
7143 | break; |
7144 | case COMP_DO: | |
8c6a85e3 | 7145 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7146 | gfc_error ("ENTRY statement at %C cannot appear within " |
7147 | "a DO block"); | |
4c93c95a FXC |
7148 | break; |
7149 | case COMP_SELECT: | |
636dff67 SK |
7150 | gfc_error ("ENTRY statement at %C cannot appear within " |
7151 | "a SELECT block"); | |
4c93c95a FXC |
7152 | break; |
7153 | case COMP_FORALL: | |
636dff67 SK |
7154 | gfc_error ("ENTRY statement at %C cannot appear within " |
7155 | "a FORALL block"); | |
4c93c95a FXC |
7156 | break; |
7157 | case COMP_WHERE: | |
636dff67 SK |
7158 | gfc_error ("ENTRY statement at %C cannot appear within " |
7159 | "a WHERE block"); | |
4c93c95a FXC |
7160 | break; |
7161 | case COMP_CONTAINS: | |
636dff67 SK |
7162 | gfc_error ("ENTRY statement at %C cannot appear within " |
7163 | "a contained subprogram"); | |
4c93c95a FXC |
7164 | break; |
7165 | default: | |
fce523bf | 7166 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7167 | } |
3d79abbd PB |
7168 | return MATCH_ERROR; |
7169 | } | |
7170 | ||
5f0ba745 SK |
7171 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7172 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7173 | { | |
7174 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7175 | return MATCH_ERROR; | |
7176 | } | |
7177 | ||
1a492601 | 7178 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7179 | && gfc_current_ns->parent->proc_name |
7180 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7181 | == FL_MODULE; | |
1a492601 | 7182 | |
3d79abbd PB |
7183 | if (gfc_current_ns->parent != NULL |
7184 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7185 | && !module_procedure) |
3d79abbd PB |
7186 | { |
7187 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7188 | "contained procedure"); | |
7189 | return MATCH_ERROR; | |
7190 | } | |
7191 | ||
1a492601 PT |
7192 | /* Module function entries need special care in get_proc_name |
7193 | because previous references within the function will have | |
7194 | created symbols attached to the current namespace. */ | |
7195 | if (get_proc_name (name, &entry, | |
7196 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7197 | && module_procedure)) |
6de9cd9a DN |
7198 | return MATCH_ERROR; |
7199 | ||
3d79abbd PB |
7200 | proc = gfc_current_block (); |
7201 | ||
bc3e7a8c TB |
7202 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7203 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7204 | not allowed for procedures. */ | |
7205 | if (entry->attr.is_bind_c == 1) | |
7206 | { | |
7207 | entry->attr.is_bind_c = 0; | |
7208 | if (entry->old_symbol != NULL) | |
7209 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7210 | "variables or common blocks", | |
7211 | &(entry->old_symbol->declared_at)); | |
7212 | else | |
7213 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7214 | "variables or common blocks", &gfc_current_locus); | |
7215 | } | |
f5acf0f2 | 7216 | |
bc3e7a8c TB |
7217 | /* Check what next non-whitespace character is so we can tell if there |
7218 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7219 | old_loc = gfc_current_locus; |
bc3e7a8c | 7220 | gfc_gobble_whitespace (); |
8fc541d3 | 7221 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7222 | |
3d79abbd | 7223 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7224 | { |
6de9cd9a DN |
7225 | m = gfc_match_formal_arglist (entry, 0, 1); |
7226 | if (m != MATCH_YES) | |
7227 | return MATCH_ERROR; | |
7228 | ||
1eabf70a TB |
7229 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7230 | never be an internal procedure. */ | |
7231 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7232 | if (is_bind_c == MATCH_ERROR) |
7233 | return MATCH_ERROR; | |
7234 | if (is_bind_c == MATCH_YES) | |
7235 | { | |
7236 | if (peek_char != '(') | |
7237 | { | |
7238 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7239 | return MATCH_ERROR; | |
7240 | } | |
70112e2a | 7241 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 7242 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
7243 | return MATCH_ERROR; |
7244 | } | |
7245 | ||
f11de7c5 | 7246 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7247 | && !add_global_entry (name, entry->binding_label, true, |
7248 | &old_loc)) | |
f11de7c5 TB |
7249 | return MATCH_ERROR; |
7250 | ||
7251 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7252 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7253 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7254 | return MATCH_ERROR; |
3d79abbd PB |
7255 | } |
7256 | else | |
7257 | { | |
c96cfa49 | 7258 | /* An entry in a function. |
636dff67 SK |
7259 | We need to take special care because writing |
7260 | ENTRY f() | |
7261 | as | |
7262 | ENTRY f | |
7263 | is allowed, whereas | |
7264 | ENTRY f() RESULT (r) | |
7265 | can't be written as | |
7266 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7267 | if (gfc_match_eos () == MATCH_YES) |
7268 | { | |
7269 | gfc_current_locus = old_loc; | |
7270 | /* Match the empty argument list, and add the interface to | |
7271 | the symbol. */ | |
7272 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7273 | } | |
7274 | else | |
7275 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7276 | ||
6de9cd9a DN |
7277 | if (m != MATCH_YES) |
7278 | return MATCH_ERROR; | |
7279 | ||
6de9cd9a DN |
7280 | result = NULL; |
7281 | ||
7282 | if (gfc_match_eos () == MATCH_YES) | |
7283 | { | |
524af0d6 JB |
7284 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7285 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7286 | return MATCH_ERROR; |
7287 | ||
d198b59a | 7288 | entry->result = entry; |
6de9cd9a DN |
7289 | } |
7290 | else | |
7291 | { | |
bc3e7a8c | 7292 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7293 | if (m == MATCH_NO) |
7294 | gfc_syntax_error (ST_ENTRY); | |
7295 | if (m != MATCH_YES) | |
7296 | return MATCH_ERROR; | |
7297 | ||
bc3e7a8c TB |
7298 | if (result) |
7299 | { | |
524af0d6 JB |
7300 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7301 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7302 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7303 | return MATCH_ERROR; |
7304 | entry->result = result; | |
7305 | } | |
7306 | else | |
7307 | { | |
524af0d6 JB |
7308 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7309 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7310 | return MATCH_ERROR; |
7311 | entry->result = entry; | |
7312 | } | |
6de9cd9a | 7313 | } |
f11de7c5 TB |
7314 | |
7315 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7316 | && !add_global_entry (name, entry->binding_label, false, |
7317 | &old_loc)) | |
f11de7c5 | 7318 | return MATCH_ERROR; |
6de9cd9a DN |
7319 | } |
7320 | ||
7321 | if (gfc_match_eos () != MATCH_YES) | |
7322 | { | |
7323 | gfc_syntax_error (ST_ENTRY); | |
7324 | return MATCH_ERROR; | |
7325 | } | |
7326 | ||
3d79abbd PB |
7327 | entry->attr.recursive = proc->attr.recursive; |
7328 | entry->attr.elemental = proc->attr.elemental; | |
7329 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7330 | |
3d79abbd PB |
7331 | el = gfc_get_entry_list (); |
7332 | el->sym = entry; | |
7333 | el->next = gfc_current_ns->entries; | |
7334 | gfc_current_ns->entries = el; | |
7335 | if (el->next) | |
7336 | el->id = el->next->id + 1; | |
7337 | else | |
7338 | el->id = 1; | |
6de9cd9a | 7339 | |
3d79abbd PB |
7340 | new_st.op = EXEC_ENTRY; |
7341 | new_st.ext.entry = el; | |
7342 | ||
7343 | return MATCH_YES; | |
6de9cd9a DN |
7344 | } |
7345 | ||
7346 | ||
7347 | /* Match a subroutine statement, including optional prefixes. */ | |
7348 | ||
7349 | match | |
7350 | gfc_match_subroutine (void) | |
7351 | { | |
7352 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7353 | gfc_symbol *sym; | |
7354 | match m; | |
a8b3b0b6 CR |
7355 | match is_bind_c; |
7356 | char peek_char; | |
1eabf70a | 7357 | bool allow_binding_name; |
6de9cd9a DN |
7358 | |
7359 | if (gfc_current_state () != COMP_NONE | |
7360 | && gfc_current_state () != COMP_INTERFACE | |
7361 | && gfc_current_state () != COMP_CONTAINS) | |
7362 | return MATCH_NO; | |
7363 | ||
1c8bcdf7 | 7364 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7365 | if (m != MATCH_YES) |
7366 | return m; | |
7367 | ||
7368 | m = gfc_match ("subroutine% %n", name); | |
7369 | if (m != MATCH_YES) | |
7370 | return m; | |
7371 | ||
1a492601 | 7372 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7373 | return MATCH_ERROR; |
3070bab4 | 7374 | |
7fcd5ad5 | 7375 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7376 | the symbol existed before. */ |
7fcd5ad5 TB |
7377 | sym->declared_at = gfc_current_locus; |
7378 | ||
4668d6f9 PT |
7379 | if (current_attr.module_procedure) |
7380 | sym->attr.module_procedure = 1; | |
7381 | ||
524af0d6 | 7382 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7383 | sym = sym->result; |
7384 | ||
6de9cd9a DN |
7385 | gfc_new_block = sym; |
7386 | ||
a8b3b0b6 | 7387 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7388 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7389 | gfc_gobble_whitespace (); |
8fc541d3 | 7390 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7391 | |
524af0d6 | 7392 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7393 | return MATCH_ERROR; |
7394 | ||
7395 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7396 | return MATCH_ERROR; | |
7397 | ||
a8b3b0b6 CR |
7398 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7399 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7400 | not allowed for procedures. */ | |
7401 | if (sym->attr.is_bind_c == 1) | |
7402 | { | |
7403 | sym->attr.is_bind_c = 0; | |
7404 | if (sym->old_symbol != NULL) | |
7405 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7406 | "variables or common blocks", | |
7407 | &(sym->old_symbol->declared_at)); | |
7408 | else | |
7409 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7410 | "variables or common blocks", &gfc_current_locus); | |
7411 | } | |
1eabf70a TB |
7412 | |
7413 | /* C binding names are not allowed for internal procedures. */ | |
7414 | if (gfc_current_state () == COMP_CONTAINS | |
7415 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7416 | allow_binding_name = false; | |
7417 | else | |
7418 | allow_binding_name = true; | |
7419 | ||
a8b3b0b6 CR |
7420 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7421 | so, then we need to make sure it's all correct. If it doesn't, | |
7422 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 7423 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7424 | if (is_bind_c == MATCH_ERROR) |
7425 | { | |
7426 | /* There was an attempt at the bind(c), but it was wrong. An | |
7427 | error message should have been printed w/in the gfc_match_bind_c | |
7428 | so here we'll just return the MATCH_ERROR. */ | |
7429 | return MATCH_ERROR; | |
7430 | } | |
7431 | ||
7432 | if (is_bind_c == MATCH_YES) | |
7433 | { | |
1eabf70a | 7434 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7435 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7436 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7437 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7438 | "at %L may not be specified for an internal " | |
7439 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7440 | return MATCH_ERROR; |
7441 | ||
a8b3b0b6 CR |
7442 | if (peek_char != '(') |
7443 | { | |
7444 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7445 | return MATCH_ERROR; | |
7446 | } | |
70112e2a | 7447 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 7448 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
7449 | return MATCH_ERROR; |
7450 | } | |
f5acf0f2 | 7451 | |
6de9cd9a DN |
7452 | if (gfc_match_eos () != MATCH_YES) |
7453 | { | |
7454 | gfc_syntax_error (ST_SUBROUTINE); | |
7455 | return MATCH_ERROR; | |
7456 | } | |
7457 | ||
524af0d6 | 7458 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7459 | { |
7460 | if(!sym->attr.module_procedure) | |
7461 | return MATCH_ERROR; | |
7462 | else | |
7463 | gfc_error_check (); | |
7464 | } | |
6de9cd9a | 7465 | |
c3005b0f | 7466 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7467 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7468 | |
6de9cd9a DN |
7469 | return MATCH_YES; |
7470 | } | |
7471 | ||
7472 | ||
3b37ccd4 FXC |
7473 | /* Check that the NAME identifier in a BIND attribute or statement |
7474 | is conform to C identifier rules. */ | |
7475 | ||
7476 | match | |
7477 | check_bind_name_identifier (char **name) | |
7478 | { | |
7479 | char *n = *name, *p; | |
7480 | ||
7481 | /* Remove leading spaces. */ | |
7482 | while (*n == ' ') | |
7483 | n++; | |
7484 | ||
7485 | /* On an empty string, free memory and set name to NULL. */ | |
7486 | if (*n == '\0') | |
7487 | { | |
7488 | free (*name); | |
7489 | *name = NULL; | |
7490 | return MATCH_YES; | |
7491 | } | |
7492 | ||
7493 | /* Remove trailing spaces. */ | |
7494 | p = n + strlen(n) - 1; | |
7495 | while (*p == ' ') | |
7496 | *(p--) = '\0'; | |
7497 | ||
7498 | /* Insert the identifier into the symbol table. */ | |
7499 | p = xstrdup (n); | |
7500 | free (*name); | |
7501 | *name = p; | |
7502 | ||
7503 | /* Now check that identifier is valid under C rules. */ | |
7504 | if (ISDIGIT (*p)) | |
7505 | { | |
7506 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7507 | return MATCH_ERROR; | |
7508 | } | |
7509 | ||
7510 | for (; *p; p++) | |
7511 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7512 | { | |
7513 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7514 | return MATCH_ERROR; | |
7515 | } | |
7516 | ||
7517 | return MATCH_YES; | |
7518 | } | |
7519 | ||
7520 | ||
a8b3b0b6 CR |
7521 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7522 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7523 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7524 | encounter the BIND(C) before the declaration itself. Return |
7525 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7526 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7527 | or MATCH_YES if the specifier was correct and the binding label and | |
7528 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7529 | current_ts. If allow_binding_name is false, no binding name may be |
7530 | given. */ | |
a8b3b0b6 CR |
7531 | |
7532 | match | |
1eabf70a | 7533 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7534 | { |
3b37ccd4 FXC |
7535 | char *binding_label = NULL; |
7536 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7537 | |
f5acf0f2 | 7538 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7539 | specifier or not. */ |
7540 | has_name_equals = 0; | |
7541 | ||
a8b3b0b6 CR |
7542 | /* This much we have to be able to match, in this order, if |
7543 | there is a bind(c) label. */ | |
7544 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7545 | return MATCH_NO; | |
7546 | ||
7547 | /* Now see if there is a binding label, or if we've reached the | |
7548 | end of the bind(c) attribute without one. */ | |
7549 | if (gfc_match_char (',') == MATCH_YES) | |
7550 | { | |
7551 | if (gfc_match (" name = ") != MATCH_YES) | |
7552 | { | |
7553 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7554 | "at %C"); | |
7555 | /* should give an error message here */ | |
7556 | return MATCH_ERROR; | |
7557 | } | |
7558 | ||
7559 | has_name_equals = 1; | |
7560 | ||
3b37ccd4 FXC |
7561 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7562 | { | |
7563 | gfc_free_expr (e); | |
7564 | return MATCH_ERROR; | |
7565 | } | |
f5acf0f2 | 7566 | |
3b37ccd4 | 7567 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7568 | { |
3b37ccd4 FXC |
7569 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7570 | gfc_free_expr (e); | |
7571 | return MATCH_ERROR; | |
a8b3b0b6 | 7572 | } |
3b37ccd4 FXC |
7573 | |
7574 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7575 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7576 | { |
3b37ccd4 FXC |
7577 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7578 | "default character kind"); | |
7579 | gfc_free_expr(e); | |
7580 | return MATCH_ERROR; | |
a8b3b0b6 | 7581 | } |
3b37ccd4 FXC |
7582 | |
7583 | // Get a C string from the Fortran string constant | |
7584 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7585 | e->value.character.length); | |
7586 | gfc_free_expr(e); | |
7587 | ||
7588 | // Check that it is valid (old gfc_match_name_C) | |
7589 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7590 | return MATCH_ERROR; | |
7591 | } | |
a8b3b0b6 CR |
7592 | |
7593 | /* Get the required right paren. */ | |
7594 | if (gfc_match_char (')') != MATCH_YES) | |
7595 | { | |
7596 | gfc_error ("Missing closing paren for binding label at %C"); | |
7597 | return MATCH_ERROR; | |
7598 | } | |
7599 | ||
1eabf70a TB |
7600 | if (has_name_equals && !allow_binding_name) |
7601 | { | |
7602 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7603 | return MATCH_ERROR; | |
7604 | } | |
7605 | ||
7606 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7607 | { | |
7608 | gfc_error ("For dummy procedure %s, no binding name is " | |
7609 | "allowed in BIND(C) at %C", sym->name); | |
7610 | return MATCH_ERROR; | |
7611 | } | |
7612 | ||
7613 | ||
a8b3b0b6 CR |
7614 | /* Save the binding label to the symbol. If sym is null, we're |
7615 | probably matching the typespec attributes of a declaration and | |
7616 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7617 | if (binding_label) |
a8b3b0b6 CR |
7618 | { |
7619 | if (sym != NULL) | |
62603fae | 7620 | sym->binding_label = binding_label; |
a8b3b0b6 | 7621 | else |
62603fae | 7622 | curr_binding_label = binding_label; |
a8b3b0b6 | 7623 | } |
1eabf70a | 7624 | else if (allow_binding_name) |
a8b3b0b6 CR |
7625 | { |
7626 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7627 | can set the label for it here. |
7628 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7629 | created. */ |
a8b3b0b6 | 7630 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7631 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7632 | } |
9e1d712c | 7633 | |
129d15a3 JW |
7634 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7635 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7636 | { |
7637 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7638 | return MATCH_ERROR; | |
7639 | } | |
7640 | ||
a8b3b0b6 CR |
7641 | return MATCH_YES; |
7642 | } | |
7643 | ||
7644 | ||
1f2959f0 | 7645 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7646 | |
7647 | static int | |
7648 | contained_procedure (void) | |
7649 | { | |
083de129 | 7650 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7651 | |
083de129 TB |
7652 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7653 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7654 | return 1; | |
ddc9ce91 TS |
7655 | |
7656 | return 0; | |
7657 | } | |
7658 | ||
d51347f9 | 7659 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7660 | interoperable with the corresponding C enumeration type, making |
7661 | sure that -fshort-enums is honored. */ | |
7662 | ||
7663 | static void | |
7664 | set_enum_kind(void) | |
7665 | { | |
7666 | enumerator_history *current_history = NULL; | |
7667 | int kind; | |
7668 | int i; | |
7669 | ||
7670 | if (max_enum == NULL || enum_history == NULL) | |
7671 | return; | |
7672 | ||
cab129d1 | 7673 | if (!flag_short_enums) |
d51347f9 TB |
7674 | return; |
7675 | ||
25d8f0a2 TS |
7676 | i = 0; |
7677 | do | |
7678 | { | |
7679 | kind = gfc_integer_kinds[i++].kind; | |
7680 | } | |
d51347f9 | 7681 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7682 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7683 | kind) != ARITH_OK); | |
7684 | ||
7685 | current_history = enum_history; | |
7686 | while (current_history != NULL) | |
7687 | { | |
7688 | current_history->sym->ts.kind = kind; | |
7689 | current_history = current_history->next; | |
7690 | } | |
7691 | } | |
7692 | ||
636dff67 | 7693 | |
6de9cd9a | 7694 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
7695 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7696 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
7697 | |
7698 | match | |
636dff67 | 7699 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
7700 | { |
7701 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7702 | gfc_compile_state state; | |
7703 | locus old_loc; | |
7704 | const char *block_name; | |
7705 | const char *target; | |
ddc9ce91 | 7706 | int eos_ok; |
6de9cd9a | 7707 | match m; |
0cab6b73 TK |
7708 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7709 | gfc_namespace **nsp; | |
63af1586 | 7710 | bool abreviated_modproc_decl = false; |
874108a9 | 7711 | bool got_matching_end = false; |
6de9cd9a | 7712 | |
63645982 | 7713 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7714 | if (gfc_match ("end") != MATCH_YES) |
7715 | return MATCH_NO; | |
7716 | ||
7717 | state = gfc_current_state (); | |
636dff67 SK |
7718 | block_name = gfc_current_block () == NULL |
7719 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 7720 | |
03af1e4c | 7721 | switch (state) |
6de9cd9a | 7722 | { |
03af1e4c DK |
7723 | case COMP_ASSOCIATE: |
7724 | case COMP_BLOCK: | |
3a1fd30c | 7725 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
7726 | block_name = NULL; |
7727 | break; | |
7728 | ||
7729 | case COMP_CONTAINS: | |
7730 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 7731 | state = gfc_state_stack->previous->state; |
636dff67 SK |
7732 | block_name = gfc_state_stack->previous->sym == NULL |
7733 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
7734 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7735 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
7736 | break; |
7737 | ||
7738 | default: | |
7739 | break; | |
6de9cd9a DN |
7740 | } |
7741 | ||
63af1586 PT |
7742 | if (!abreviated_modproc_decl) |
7743 | abreviated_modproc_decl = gfc_current_block () | |
7744 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 7745 | |
6de9cd9a DN |
7746 | switch (state) |
7747 | { | |
7748 | case COMP_NONE: | |
7749 | case COMP_PROGRAM: | |
7750 | *st = ST_END_PROGRAM; | |
7751 | target = " program"; | |
ddc9ce91 | 7752 | eos_ok = 1; |
6de9cd9a DN |
7753 | break; |
7754 | ||
7755 | case COMP_SUBROUTINE: | |
7756 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 7757 | if (!abreviated_modproc_decl) |
6de9cd9a | 7758 | target = " subroutine"; |
4668d6f9 PT |
7759 | else |
7760 | target = " procedure"; | |
ddc9ce91 | 7761 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7762 | break; |
7763 | ||
7764 | case COMP_FUNCTION: | |
7765 | *st = ST_END_FUNCTION; | |
4668d6f9 | 7766 | if (!abreviated_modproc_decl) |
6de9cd9a | 7767 | target = " function"; |
4668d6f9 PT |
7768 | else |
7769 | target = " procedure"; | |
ddc9ce91 | 7770 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7771 | break; |
7772 | ||
7773 | case COMP_BLOCK_DATA: | |
7774 | *st = ST_END_BLOCK_DATA; | |
7775 | target = " block data"; | |
ddc9ce91 | 7776 | eos_ok = 1; |
6de9cd9a DN |
7777 | break; |
7778 | ||
7779 | case COMP_MODULE: | |
7780 | *st = ST_END_MODULE; | |
7781 | target = " module"; | |
ddc9ce91 | 7782 | eos_ok = 1; |
6de9cd9a DN |
7783 | break; |
7784 | ||
4668d6f9 PT |
7785 | case COMP_SUBMODULE: |
7786 | *st = ST_END_SUBMODULE; | |
7787 | target = " submodule"; | |
7788 | eos_ok = 1; | |
7789 | break; | |
7790 | ||
6de9cd9a DN |
7791 | case COMP_INTERFACE: |
7792 | *st = ST_END_INTERFACE; | |
7793 | target = " interface"; | |
ddc9ce91 | 7794 | eos_ok = 0; |
6de9cd9a DN |
7795 | break; |
7796 | ||
f6288c24 FR |
7797 | case COMP_MAP: |
7798 | *st = ST_END_MAP; | |
7799 | target = " map"; | |
7800 | eos_ok = 0; | |
7801 | break; | |
7802 | ||
7803 | case COMP_UNION: | |
7804 | *st = ST_END_UNION; | |
7805 | target = " union"; | |
7806 | eos_ok = 0; | |
7807 | break; | |
7808 | ||
7809 | case COMP_STRUCTURE: | |
7810 | *st = ST_END_STRUCTURE; | |
7811 | target = " structure"; | |
7812 | eos_ok = 0; | |
7813 | break; | |
7814 | ||
6de9cd9a | 7815 | case COMP_DERIVED: |
30b608eb | 7816 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
7817 | *st = ST_END_TYPE; |
7818 | target = " type"; | |
ddc9ce91 | 7819 | eos_ok = 0; |
6de9cd9a DN |
7820 | break; |
7821 | ||
03af1e4c DK |
7822 | case COMP_ASSOCIATE: |
7823 | *st = ST_END_ASSOCIATE; | |
7824 | target = " associate"; | |
7825 | eos_ok = 0; | |
7826 | break; | |
7827 | ||
9abe5e56 DK |
7828 | case COMP_BLOCK: |
7829 | *st = ST_END_BLOCK; | |
7830 | target = " block"; | |
7831 | eos_ok = 0; | |
7832 | break; | |
7833 | ||
6de9cd9a DN |
7834 | case COMP_IF: |
7835 | *st = ST_ENDIF; | |
7836 | target = " if"; | |
ddc9ce91 | 7837 | eos_ok = 0; |
6de9cd9a DN |
7838 | break; |
7839 | ||
7840 | case COMP_DO: | |
8c6a85e3 | 7841 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
7842 | *st = ST_ENDDO; |
7843 | target = " do"; | |
ddc9ce91 | 7844 | eos_ok = 0; |
6de9cd9a DN |
7845 | break; |
7846 | ||
d0a4a61c TB |
7847 | case COMP_CRITICAL: |
7848 | *st = ST_END_CRITICAL; | |
7849 | target = " critical"; | |
7850 | eos_ok = 0; | |
7851 | break; | |
7852 | ||
6de9cd9a | 7853 | case COMP_SELECT: |
cf2b3c22 | 7854 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
7855 | *st = ST_END_SELECT; |
7856 | target = " select"; | |
ddc9ce91 | 7857 | eos_ok = 0; |
6de9cd9a DN |
7858 | break; |
7859 | ||
7860 | case COMP_FORALL: | |
7861 | *st = ST_END_FORALL; | |
7862 | target = " forall"; | |
ddc9ce91 | 7863 | eos_ok = 0; |
6de9cd9a DN |
7864 | break; |
7865 | ||
7866 | case COMP_WHERE: | |
7867 | *st = ST_END_WHERE; | |
7868 | target = " where"; | |
ddc9ce91 | 7869 | eos_ok = 0; |
6de9cd9a DN |
7870 | break; |
7871 | ||
25d8f0a2 TS |
7872 | case COMP_ENUM: |
7873 | *st = ST_END_ENUM; | |
7874 | target = " enum"; | |
7875 | eos_ok = 0; | |
7876 | last_initializer = NULL; | |
7877 | set_enum_kind (); | |
7878 | gfc_free_enum_history (); | |
7879 | break; | |
7880 | ||
6de9cd9a DN |
7881 | default: |
7882 | gfc_error ("Unexpected END statement at %C"); | |
7883 | goto cleanup; | |
7884 | } | |
7885 | ||
3a43b5b3 | 7886 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7887 | if (gfc_match_eos () == MATCH_YES) |
7888 | { | |
272001a2 TB |
7889 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
7890 | { | |
524af0d6 | 7891 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 7892 | "instead of %s statement at %L", |
4668d6f9 PT |
7893 | abreviated_modproc_decl ? "END PROCEDURE" |
7894 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
7895 | goto cleanup; |
7896 | } | |
7897 | else if (!eos_ok) | |
6de9cd9a | 7898 | { |
66e4ab31 | 7899 | /* We would have required END [something]. */ |
59ce85b5 TS |
7900 | gfc_error ("%s statement expected at %L", |
7901 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
7902 | goto cleanup; |
7903 | } | |
7904 | ||
7905 | return MATCH_YES; | |
7906 | } | |
7907 | ||
7908 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
7909 | if (gfc_match (target) != MATCH_YES) | |
7910 | { | |
4668d6f9 PT |
7911 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
7912 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
7913 | goto cleanup; |
7914 | } | |
874108a9 AV |
7915 | else |
7916 | got_matching_end = true; | |
6de9cd9a | 7917 | |
3a43b5b3 | 7918 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7919 | /* If we're at the end, make sure a block name wasn't required. */ |
7920 | if (gfc_match_eos () == MATCH_YES) | |
7921 | { | |
7922 | ||
690af379 | 7923 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 7924 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 7925 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
7926 | return MATCH_YES; |
7927 | ||
9abe5e56 | 7928 | if (!block_name) |
6de9cd9a DN |
7929 | return MATCH_YES; |
7930 | ||
c4100eae | 7931 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 7932 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
7933 | |
7934 | return MATCH_ERROR; | |
7935 | } | |
7936 | ||
7937 | /* END INTERFACE has a special handler for its several possible endings. */ | |
7938 | if (*st == ST_END_INTERFACE) | |
7939 | return gfc_match_end_interface (); | |
7940 | ||
66e4ab31 SK |
7941 | /* We haven't hit the end of statement, so what is left must be an |
7942 | end-name. */ | |
6de9cd9a DN |
7943 | m = gfc_match_space (); |
7944 | if (m == MATCH_YES) | |
7945 | m = gfc_match_name (name); | |
7946 | ||
7947 | if (m == MATCH_NO) | |
7948 | gfc_error ("Expected terminating name at %C"); | |
7949 | if (m != MATCH_YES) | |
7950 | goto cleanup; | |
7951 | ||
7952 | if (block_name == NULL) | |
7953 | goto syntax; | |
7954 | ||
3d5dc929 PT |
7955 | /* We have to pick out the declared submodule name from the composite |
7956 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
7957 | if (state == COMP_SUBMODULE) | |
7958 | block_name = strchr (block_name, '.') + 1; | |
7959 | ||
3070bab4 | 7960 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 7961 | { |
c4100eae | 7962 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
7963 | gfc_ascii_statement (*st)); |
7964 | goto cleanup; | |
7965 | } | |
3070bab4 JW |
7966 | /* Procedure pointer as function result. */ |
7967 | else if (strcmp (block_name, "ppr@") == 0 | |
7968 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
7969 | { | |
c4100eae | 7970 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
7971 | gfc_current_block ()->ns->proc_name->name, |
7972 | gfc_ascii_statement (*st)); | |
7973 | goto cleanup; | |
7974 | } | |
6de9cd9a DN |
7975 | |
7976 | if (gfc_match_eos () == MATCH_YES) | |
7977 | return MATCH_YES; | |
7978 | ||
7979 | syntax: | |
7980 | gfc_syntax_error (*st); | |
7981 | ||
7982 | cleanup: | |
63645982 | 7983 | gfc_current_locus = old_loc; |
0cab6b73 TK |
7984 | |
7985 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
7986 | Remove it from the parent namespace's sibling list. */ | |
7987 | ||
874108a9 | 7988 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
7989 | { |
7990 | parent_ns = gfc_current_ns->parent; | |
7991 | ||
7992 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
7993 | ||
7994 | prev_ns = NULL; | |
7995 | ns = *nsp; | |
7996 | while (ns) | |
7997 | { | |
7998 | if (ns == gfc_current_ns) | |
7999 | { | |
8000 | if (prev_ns == NULL) | |
8001 | *nsp = NULL; | |
8002 | else | |
8003 | prev_ns->sibling = ns->sibling; | |
8004 | } | |
8005 | prev_ns = ns; | |
8006 | ns = ns->sibling; | |
8007 | } | |
874108a9 | 8008 | |
0cab6b73 TK |
8009 | gfc_free_namespace (gfc_current_ns); |
8010 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
8011 | gfc_state_stack = gfc_state_stack->previous; |
8012 | state = gfc_current_state (); | |
0cab6b73 TK |
8013 | } |
8014 | ||
6de9cd9a DN |
8015 | return MATCH_ERROR; |
8016 | } | |
8017 | ||
8018 | ||
8019 | ||
8020 | /***************** Attribute declaration statements ****************/ | |
8021 | ||
8022 | /* Set the attribute of a single variable. */ | |
8023 | ||
8024 | static match | |
8025 | attr_decl1 (void) | |
8026 | { | |
8027 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8028 | gfc_array_spec *as; | |
97440db5 ML |
8029 | |
8030 | /* Workaround -Wmaybe-uninitialized false positive during | |
8031 | profiledbootstrap by initializing them. */ | |
8032 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8033 | locus var_locus; |
8034 | match m; | |
8035 | ||
8036 | as = NULL; | |
8037 | ||
8038 | m = gfc_match_name (name); | |
8039 | if (m != MATCH_YES) | |
8040 | goto cleanup; | |
8041 | ||
08a6b8e0 | 8042 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8043 | return MATCH_ERROR; |
8044 | ||
524af0d6 | 8045 | if (!check_function_name (name)) |
bb9de0c4 JW |
8046 | { |
8047 | m = MATCH_ERROR; | |
8048 | goto cleanup; | |
8049 | } | |
f5acf0f2 | 8050 | |
63645982 | 8051 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8052 | |
8053 | /* Deal with possible array specification for certain attributes. */ | |
8054 | if (current_attr.dimension | |
be59db2d | 8055 | || current_attr.codimension |
6de9cd9a DN |
8056 | || current_attr.allocatable |
8057 | || current_attr.pointer | |
8058 | || current_attr.target) | |
8059 | { | |
be59db2d TB |
8060 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8061 | !current_attr.dimension | |
8062 | && !current_attr.pointer | |
8063 | && !current_attr.target); | |
6de9cd9a DN |
8064 | if (m == MATCH_ERROR) |
8065 | goto cleanup; | |
8066 | ||
8067 | if (current_attr.dimension && m == MATCH_NO) | |
8068 | { | |
636dff67 SK |
8069 | gfc_error ("Missing array specification at %L in DIMENSION " |
8070 | "statement", &var_locus); | |
6de9cd9a DN |
8071 | m = MATCH_ERROR; |
8072 | goto cleanup; | |
8073 | } | |
8074 | ||
1283ab12 TB |
8075 | if (current_attr.dimension && sym->value) |
8076 | { | |
8077 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8078 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8079 | m = MATCH_ERROR; |
8080 | goto cleanup; | |
8081 | } | |
8082 | ||
be59db2d TB |
8083 | if (current_attr.codimension && m == MATCH_NO) |
8084 | { | |
8085 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8086 | "statement", &var_locus); | |
8087 | m = MATCH_ERROR; | |
8088 | goto cleanup; | |
8089 | } | |
8090 | ||
6de9cd9a DN |
8091 | if ((current_attr.allocatable || current_attr.pointer) |
8092 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8093 | { | |
636dff67 | 8094 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8095 | m = MATCH_ERROR; |
8096 | goto cleanup; | |
8097 | } | |
8098 | } | |
8099 | ||
2e23972e JW |
8100 | /* Update symbol table. DIMENSION attribute is set in |
8101 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8102 | to the first component, or '_data' field. */ |
d40477b4 | 8103 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8104 | { |
524af0d6 | 8105 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8106 | { |
8107 | m = MATCH_ERROR; | |
8108 | goto cleanup; | |
8109 | } | |
2e23972e JW |
8110 | } |
8111 | else | |
8112 | { | |
be59db2d | 8113 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8114 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8115 | { |
8116 | m = MATCH_ERROR; | |
8117 | goto cleanup; | |
8118 | } | |
6de9cd9a | 8119 | } |
f5acf0f2 | 8120 | |
528622fd | 8121 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8122 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8123 | { |
8124 | m = MATCH_ERROR; | |
8125 | goto cleanup; | |
8126 | } | |
6de9cd9a | 8127 | |
524af0d6 | 8128 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8129 | { |
8130 | m = MATCH_ERROR; | |
8131 | goto cleanup; | |
8132 | } | |
d51347f9 | 8133 | |
83d890b9 AL |
8134 | if (sym->attr.cray_pointee && sym->as != NULL) |
8135 | { | |
8136 | /* Fix the array spec. */ | |
f5acf0f2 | 8137 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8138 | if (m == MATCH_ERROR) |
8139 | goto cleanup; | |
8140 | } | |
6de9cd9a | 8141 | |
524af0d6 | 8142 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8143 | { |
8144 | m = MATCH_ERROR; | |
8145 | goto cleanup; | |
8146 | } | |
8147 | ||
6de9cd9a DN |
8148 | if ((current_attr.external || current_attr.intrinsic) |
8149 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8150 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8151 | { |
8152 | m = MATCH_ERROR; | |
8153 | goto cleanup; | |
8154 | } | |
8155 | ||
3070bab4 JW |
8156 | add_hidden_procptr_result (sym); |
8157 | ||
6de9cd9a DN |
8158 | return MATCH_YES; |
8159 | ||
8160 | cleanup: | |
8161 | gfc_free_array_spec (as); | |
8162 | return m; | |
8163 | } | |
8164 | ||
8165 | ||
8166 | /* Generic attribute declaration subroutine. Used for attributes that | |
8167 | just have a list of names. */ | |
8168 | ||
8169 | static match | |
8170 | attr_decl (void) | |
8171 | { | |
8172 | match m; | |
8173 | ||
8174 | /* Gobble the optional double colon, by simply ignoring the result | |
8175 | of gfc_match(). */ | |
8176 | gfc_match (" ::"); | |
8177 | ||
8178 | for (;;) | |
8179 | { | |
8180 | m = attr_decl1 (); | |
8181 | if (m != MATCH_YES) | |
8182 | break; | |
8183 | ||
8184 | if (gfc_match_eos () == MATCH_YES) | |
8185 | { | |
8186 | m = MATCH_YES; | |
8187 | break; | |
8188 | } | |
8189 | ||
8190 | if (gfc_match_char (',') != MATCH_YES) | |
8191 | { | |
8192 | gfc_error ("Unexpected character in variable list at %C"); | |
8193 | m = MATCH_ERROR; | |
8194 | break; | |
8195 | } | |
8196 | } | |
8197 | ||
8198 | return m; | |
8199 | } | |
8200 | ||
8201 | ||
83d890b9 AL |
8202 | /* This routine matches Cray Pointer declarations of the form: |
8203 | pointer ( <pointer>, <pointee> ) | |
8204 | or | |
d51347f9 TB |
8205 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8206 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8207 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8208 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8209 | the pointee. For the statement |
83d890b9 AL |
8210 | pointer (ipt, ar(10)) |
8211 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8212 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8213 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8214 | |
8215 | static match | |
8216 | cray_pointer_decl (void) | |
8217 | { | |
8218 | match m; | |
be59db2d | 8219 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8220 | gfc_symbol *cptr; /* Pointer symbol. */ |
8221 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8222 | locus var_locus; | |
8223 | bool done = false; | |
8224 | ||
8225 | while (!done) | |
8226 | { | |
8227 | if (gfc_match_char ('(') != MATCH_YES) | |
8228 | { | |
a4d9b221 | 8229 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8230 | return MATCH_ERROR; |
83d890b9 | 8231 | } |
d51347f9 | 8232 | |
83d890b9 AL |
8233 | /* Match pointer. */ |
8234 | var_locus = gfc_current_locus; | |
8235 | gfc_clear_attr (¤t_attr); | |
8236 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8237 | current_ts.type = BT_INTEGER; | |
8238 | current_ts.kind = gfc_index_integer_kind; | |
8239 | ||
d51347f9 | 8240 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8241 | if (m != MATCH_YES) |
8242 | { | |
8243 | gfc_error ("Expected variable name at %C"); | |
8244 | return m; | |
8245 | } | |
d51347f9 | 8246 | |
524af0d6 | 8247 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8248 | return MATCH_ERROR; |
8249 | ||
d51347f9 | 8250 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8251 | |
8252 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8253 | { | |
8254 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8255 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8256 | } |
8257 | else if (cptr->ts.type != BT_INTEGER) | |
8258 | { | |
e25a0da3 | 8259 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8260 | return MATCH_ERROR; |
8261 | } | |
8262 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8263 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8264 | " memory addresses require %d bytes", |
636dff67 | 8265 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8266 | |
8267 | if (gfc_match_char (',') != MATCH_YES) | |
8268 | { | |
8269 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8270 | return MATCH_ERROR; |
83d890b9 AL |
8271 | } |
8272 | ||
d51347f9 | 8273 | /* Match Pointee. */ |
83d890b9 AL |
8274 | var_locus = gfc_current_locus; |
8275 | gfc_clear_attr (¤t_attr); | |
8276 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8277 | current_ts.type = BT_UNKNOWN; | |
8278 | current_ts.kind = 0; | |
8279 | ||
8280 | m = gfc_match_symbol (&cpte, 0); | |
8281 | if (m != MATCH_YES) | |
8282 | { | |
8283 | gfc_error ("Expected variable name at %C"); | |
8284 | return m; | |
8285 | } | |
d51347f9 | 8286 | |
83d890b9 | 8287 | /* Check for an optional array spec. */ |
be59db2d | 8288 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8289 | if (m == MATCH_ERROR) |
8290 | { | |
8291 | gfc_free_array_spec (as); | |
8292 | return m; | |
8293 | } | |
8294 | else if (m == MATCH_NO) | |
8295 | { | |
8296 | gfc_free_array_spec (as); | |
8297 | as = NULL; | |
f5acf0f2 | 8298 | } |
83d890b9 | 8299 | |
524af0d6 | 8300 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8301 | return MATCH_ERROR; |
8302 | ||
8303 | gfc_set_sym_referenced (cpte); | |
8304 | ||
8305 | if (cpte->as == NULL) | |
8306 | { | |
524af0d6 | 8307 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
8308 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8309 | } | |
8310 | else if (as != NULL) | |
8311 | { | |
e25a0da3 | 8312 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8313 | gfc_free_array_spec (as); |
8314 | return MATCH_ERROR; | |
8315 | } | |
f5acf0f2 | 8316 | |
83d890b9 | 8317 | as = NULL; |
f5acf0f2 | 8318 | |
83d890b9 AL |
8319 | if (cpte->as != NULL) |
8320 | { | |
8321 | /* Fix array spec. */ | |
8322 | m = gfc_mod_pointee_as (cpte->as); | |
8323 | if (m == MATCH_ERROR) | |
8324 | return m; | |
f5acf0f2 PT |
8325 | } |
8326 | ||
83d890b9 | 8327 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8328 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8329 | |
8330 | if (gfc_match_char (')') != MATCH_YES) | |
8331 | { | |
8332 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8333 | return MATCH_ERROR; |
83d890b9 AL |
8334 | } |
8335 | m = gfc_match_char (','); | |
8336 | if (m != MATCH_YES) | |
8337 | done = true; /* Stop searching for more declarations. */ | |
8338 | ||
8339 | } | |
f5acf0f2 | 8340 | |
83d890b9 AL |
8341 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8342 | || gfc_match_eos () != MATCH_YES) | |
8343 | { | |
a4d9b221 | 8344 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8345 | return MATCH_ERROR; |
8346 | } | |
8347 | return MATCH_YES; | |
8348 | } | |
8349 | ||
8350 | ||
6de9cd9a DN |
8351 | match |
8352 | gfc_match_external (void) | |
8353 | { | |
8354 | ||
8355 | gfc_clear_attr (¤t_attr); | |
1902704e | 8356 | current_attr.external = 1; |
6de9cd9a DN |
8357 | |
8358 | return attr_decl (); | |
8359 | } | |
8360 | ||
8361 | ||
6de9cd9a DN |
8362 | match |
8363 | gfc_match_intent (void) | |
8364 | { | |
8365 | sym_intent intent; | |
8366 | ||
9abe5e56 DK |
8367 | /* This is not allowed within a BLOCK construct! */ |
8368 | if (gfc_current_state () == COMP_BLOCK) | |
8369 | { | |
8370 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8371 | return MATCH_ERROR; | |
8372 | } | |
8373 | ||
6de9cd9a DN |
8374 | intent = match_intent_spec (); |
8375 | if (intent == INTENT_UNKNOWN) | |
8376 | return MATCH_ERROR; | |
8377 | ||
8378 | gfc_clear_attr (¤t_attr); | |
1902704e | 8379 | current_attr.intent = intent; |
6de9cd9a DN |
8380 | |
8381 | return attr_decl (); | |
8382 | } | |
8383 | ||
8384 | ||
8385 | match | |
8386 | gfc_match_intrinsic (void) | |
8387 | { | |
8388 | ||
8389 | gfc_clear_attr (¤t_attr); | |
1902704e | 8390 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8391 | |
8392 | return attr_decl (); | |
8393 | } | |
8394 | ||
8395 | ||
8396 | match | |
8397 | gfc_match_optional (void) | |
8398 | { | |
9abe5e56 DK |
8399 | /* This is not allowed within a BLOCK construct! */ |
8400 | if (gfc_current_state () == COMP_BLOCK) | |
8401 | { | |
8402 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8403 | return MATCH_ERROR; | |
8404 | } | |
6de9cd9a DN |
8405 | |
8406 | gfc_clear_attr (¤t_attr); | |
1902704e | 8407 | current_attr.optional = 1; |
6de9cd9a DN |
8408 | |
8409 | return attr_decl (); | |
8410 | } | |
8411 | ||
8412 | ||
8413 | match | |
8414 | gfc_match_pointer (void) | |
8415 | { | |
83d890b9 | 8416 | gfc_gobble_whitespace (); |
8fc541d3 | 8417 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8418 | { |
c61819ff | 8419 | if (!flag_cray_pointer) |
83d890b9 | 8420 | { |
636dff67 SK |
8421 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8422 | "flag"); | |
83d890b9 AL |
8423 | return MATCH_ERROR; |
8424 | } | |
8425 | return cray_pointer_decl (); | |
8426 | } | |
8427 | else | |
8428 | { | |
8429 | gfc_clear_attr (¤t_attr); | |
1902704e | 8430 | current_attr.pointer = 1; |
f5acf0f2 | 8431 | |
83d890b9 AL |
8432 | return attr_decl (); |
8433 | } | |
6de9cd9a DN |
8434 | } |
8435 | ||
8436 | ||
8437 | match | |
8438 | gfc_match_allocatable (void) | |
8439 | { | |
6de9cd9a | 8440 | gfc_clear_attr (¤t_attr); |
1902704e | 8441 | current_attr.allocatable = 1; |
6de9cd9a DN |
8442 | |
8443 | return attr_decl (); | |
8444 | } | |
8445 | ||
8446 | ||
be59db2d TB |
8447 | match |
8448 | gfc_match_codimension (void) | |
8449 | { | |
8450 | gfc_clear_attr (¤t_attr); | |
8451 | current_attr.codimension = 1; | |
8452 | ||
8453 | return attr_decl (); | |
8454 | } | |
8455 | ||
8456 | ||
fe4e525c TB |
8457 | match |
8458 | gfc_match_contiguous (void) | |
8459 | { | |
524af0d6 | 8460 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8461 | return MATCH_ERROR; |
8462 | ||
8463 | gfc_clear_attr (¤t_attr); | |
8464 | current_attr.contiguous = 1; | |
8465 | ||
8466 | return attr_decl (); | |
8467 | } | |
8468 | ||
8469 | ||
6de9cd9a DN |
8470 | match |
8471 | gfc_match_dimension (void) | |
8472 | { | |
6de9cd9a | 8473 | gfc_clear_attr (¤t_attr); |
1902704e | 8474 | current_attr.dimension = 1; |
6de9cd9a DN |
8475 | |
8476 | return attr_decl (); | |
8477 | } | |
8478 | ||
8479 | ||
8480 | match | |
8481 | gfc_match_target (void) | |
8482 | { | |
6de9cd9a | 8483 | gfc_clear_attr (¤t_attr); |
1902704e | 8484 | current_attr.target = 1; |
6de9cd9a DN |
8485 | |
8486 | return attr_decl (); | |
8487 | } | |
8488 | ||
8489 | ||
8490 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8491 | statement. */ | |
8492 | ||
8493 | static match | |
8494 | access_attr_decl (gfc_statement st) | |
8495 | { | |
8496 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8497 | interface_type type; | |
8498 | gfc_user_op *uop; | |
c3f34952 | 8499 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8500 | gfc_intrinsic_op op; |
6de9cd9a DN |
8501 | match m; |
8502 | ||
8503 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8504 | goto done; | |
8505 | ||
8506 | for (;;) | |
8507 | { | |
a1ee985f | 8508 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8509 | if (m == MATCH_NO) |
8510 | goto syntax; | |
8511 | if (m == MATCH_ERROR) | |
8512 | return MATCH_ERROR; | |
8513 | ||
8514 | switch (type) | |
8515 | { | |
8516 | case INTERFACE_NAMELESS: | |
9e1d712c | 8517 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8518 | goto syntax; |
8519 | ||
8520 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8521 | case INTERFACE_DTIO: |
dc42a736 | 8522 | |
6de9cd9a DN |
8523 | if (gfc_get_symbol (name, NULL, &sym)) |
8524 | goto done; | |
8525 | ||
41036686 PT |
8526 | if (type == INTERFACE_DTIO |
8527 | && gfc_current_ns->proc_name | |
8528 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8529 | && sym->attr.flavor == FL_UNKNOWN) | |
8530 | sym->attr.flavor = FL_PROCEDURE; | |
8531 | ||
70112e2a PT |
8532 | if (!gfc_add_access (&sym->attr, |
8533 | (st == ST_PUBLIC) | |
8534 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8535 | sym->name, NULL)) |
6de9cd9a DN |
8536 | return MATCH_ERROR; |
8537 | ||
c3f34952 | 8538 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
8539 | && !gfc_add_access (&dt_sym->attr, |
8540 | (st == ST_PUBLIC) | |
8541 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8542 | sym->name, NULL)) |
c3f34952 TB |
8543 | return MATCH_ERROR; |
8544 | ||
6de9cd9a DN |
8545 | break; |
8546 | ||
8547 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8548 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8549 | { |
fb03a37e TK |
8550 | gfc_intrinsic_op other_op; |
8551 | ||
a1ee985f | 8552 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 8553 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
8554 | |
8555 | /* Handle the case if there is another op with the same | |
8556 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8557 | other_op = gfc_equivalent_op (op); | |
8558 | ||
8559 | if (other_op != INTRINSIC_NONE) | |
8560 | gfc_current_ns->operator_access[other_op] = | |
8561 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8562 | ||
6de9cd9a DN |
8563 | } |
8564 | else | |
8565 | { | |
8566 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8567 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8568 | goto done; |
8569 | } | |
8570 | ||
8571 | break; | |
8572 | ||
8573 | case INTERFACE_USER_OP: | |
8574 | uop = gfc_get_uop (name); | |
8575 | ||
8576 | if (uop->access == ACCESS_UNKNOWN) | |
8577 | { | |
636dff67 SK |
8578 | uop->access = (st == ST_PUBLIC) |
8579 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
8580 | } |
8581 | else | |
8582 | { | |
636dff67 SK |
8583 | gfc_error ("Access specification of the .%s. operator at %C " |
8584 | "has already been specified", sym->name); | |
6de9cd9a DN |
8585 | goto done; |
8586 | } | |
8587 | ||
8588 | break; | |
8589 | } | |
8590 | ||
8591 | if (gfc_match_char (',') == MATCH_NO) | |
8592 | break; | |
8593 | } | |
8594 | ||
8595 | if (gfc_match_eos () != MATCH_YES) | |
8596 | goto syntax; | |
8597 | return MATCH_YES; | |
8598 | ||
8599 | syntax: | |
8600 | gfc_syntax_error (st); | |
8601 | ||
8602 | done: | |
8603 | return MATCH_ERROR; | |
8604 | } | |
8605 | ||
8606 | ||
ee7e677f TB |
8607 | match |
8608 | gfc_match_protected (void) | |
8609 | { | |
8610 | gfc_symbol *sym; | |
8611 | match m; | |
8612 | ||
73641c88 SK |
8613 | if (!gfc_current_ns->proc_name |
8614 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8615 | { |
8616 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8617 | "part of a module"); | |
8618 | return MATCH_ERROR; | |
8619 | ||
8620 | } | |
8621 | ||
524af0d6 | 8622 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8623 | return MATCH_ERROR; |
8624 | ||
8625 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8626 | { | |
8627 | return MATCH_ERROR; | |
8628 | } | |
8629 | ||
8630 | if (gfc_match_eos () == MATCH_YES) | |
8631 | goto syntax; | |
8632 | ||
8633 | for(;;) | |
8634 | { | |
8635 | m = gfc_match_symbol (&sym, 0); | |
8636 | switch (m) | |
8637 | { | |
8638 | case MATCH_YES: | |
524af0d6 | 8639 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8640 | return MATCH_ERROR; |
8641 | goto next_item; | |
8642 | ||
8643 | case MATCH_NO: | |
8644 | break; | |
8645 | ||
8646 | case MATCH_ERROR: | |
8647 | return MATCH_ERROR; | |
8648 | } | |
8649 | ||
8650 | next_item: | |
8651 | if (gfc_match_eos () == MATCH_YES) | |
8652 | break; | |
8653 | if (gfc_match_char (',') != MATCH_YES) | |
8654 | goto syntax; | |
8655 | } | |
8656 | ||
8657 | return MATCH_YES; | |
8658 | ||
8659 | syntax: | |
8660 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8661 | return MATCH_ERROR; | |
8662 | } | |
8663 | ||
8664 | ||
86bf520d | 8665 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8666 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8667 | type declaration or a module. */ |
8668 | ||
8669 | match | |
636dff67 | 8670 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
8671 | { |
8672 | ||
8673 | if (gfc_match ("private") != MATCH_YES) | |
8674 | return MATCH_NO; | |
8675 | ||
d51347f9 | 8676 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
8677 | && !(gfc_current_state () == COMP_DERIVED |
8678 | && gfc_state_stack->previous | |
8679 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8680 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8681 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8682 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
8683 | { |
8684 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8685 | "specification part of a module"); | |
8686 | return MATCH_ERROR; | |
8687 | } | |
8688 | ||
6de9cd9a DN |
8689 | if (gfc_current_state () == COMP_DERIVED) |
8690 | { | |
8691 | if (gfc_match_eos () == MATCH_YES) | |
8692 | { | |
8693 | *st = ST_PRIVATE; | |
8694 | return MATCH_YES; | |
8695 | } | |
8696 | ||
8697 | gfc_syntax_error (ST_PRIVATE); | |
8698 | return MATCH_ERROR; | |
8699 | } | |
8700 | ||
8701 | if (gfc_match_eos () == MATCH_YES) | |
8702 | { | |
8703 | *st = ST_PRIVATE; | |
8704 | return MATCH_YES; | |
8705 | } | |
8706 | ||
8707 | *st = ST_ATTR_DECL; | |
8708 | return access_attr_decl (ST_PRIVATE); | |
8709 | } | |
8710 | ||
8711 | ||
8712 | match | |
636dff67 | 8713 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
8714 | { |
8715 | ||
8716 | if (gfc_match ("public") != MATCH_YES) | |
8717 | return MATCH_NO; | |
8718 | ||
d51347f9 TB |
8719 | if (gfc_current_state () != COMP_MODULE) |
8720 | { | |
8721 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8722 | "specification part of a module"); | |
8723 | return MATCH_ERROR; | |
8724 | } | |
8725 | ||
6de9cd9a DN |
8726 | if (gfc_match_eos () == MATCH_YES) |
8727 | { | |
8728 | *st = ST_PUBLIC; | |
8729 | return MATCH_YES; | |
8730 | } | |
8731 | ||
8732 | *st = ST_ATTR_DECL; | |
8733 | return access_attr_decl (ST_PUBLIC); | |
8734 | } | |
8735 | ||
8736 | ||
8737 | /* Workhorse for gfc_match_parameter. */ | |
8738 | ||
8739 | static match | |
8740 | do_parm (void) | |
8741 | { | |
8742 | gfc_symbol *sym; | |
8743 | gfc_expr *init; | |
8744 | match m; | |
524af0d6 | 8745 | bool t; |
6de9cd9a DN |
8746 | |
8747 | m = gfc_match_symbol (&sym, 0); | |
8748 | if (m == MATCH_NO) | |
8749 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8750 | ||
8751 | if (m != MATCH_YES) | |
8752 | return m; | |
8753 | ||
8754 | if (gfc_match_char ('=') == MATCH_NO) | |
8755 | { | |
8756 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8757 | return MATCH_ERROR; | |
8758 | } | |
8759 | ||
8760 | m = gfc_match_init_expr (&init); | |
8761 | if (m == MATCH_NO) | |
8762 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8763 | if (m != MATCH_YES) | |
8764 | return m; | |
8765 | ||
8766 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 8767 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
8768 | { |
8769 | m = MATCH_ERROR; | |
8770 | goto cleanup; | |
8771 | } | |
8772 | ||
524af0d6 JB |
8773 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8774 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
8775 | { |
8776 | m = MATCH_ERROR; | |
8777 | goto cleanup; | |
8778 | } | |
8779 | ||
1283ab12 TB |
8780 | if (sym->value) |
8781 | { | |
8782 | gfc_error ("Initializing already initialized variable at %C"); | |
8783 | m = MATCH_ERROR; | |
8784 | goto cleanup; | |
8785 | } | |
8786 | ||
7919373d | 8787 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 8788 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
8789 | |
8790 | cleanup: | |
8791 | gfc_free_expr (init); | |
8792 | return m; | |
8793 | } | |
8794 | ||
8795 | ||
8796 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8797 | ||
8798 | match | |
8799 | gfc_match_parameter (void) | |
8800 | { | |
35ea947f | 8801 | const char *term = " )%t"; |
6de9cd9a DN |
8802 | match m; |
8803 | ||
8804 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
8805 | { |
8806 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8807 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8808 | return MATCH_NO; | |
8809 | term = " %t"; | |
8810 | } | |
6de9cd9a DN |
8811 | |
8812 | for (;;) | |
8813 | { | |
8814 | m = do_parm (); | |
8815 | if (m != MATCH_YES) | |
8816 | break; | |
8817 | ||
35ea947f | 8818 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
8819 | break; |
8820 | ||
8821 | if (gfc_match_char (',') != MATCH_YES) | |
8822 | { | |
8823 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8824 | m = MATCH_ERROR; | |
8825 | break; | |
8826 | } | |
8827 | } | |
8828 | ||
8829 | return m; | |
8830 | } | |
8831 | ||
8832 | ||
34d567d1 FR |
8833 | match |
8834 | gfc_match_automatic (void) | |
8835 | { | |
8836 | gfc_symbol *sym; | |
8837 | match m; | |
8838 | bool seen_symbol = false; | |
8839 | ||
8840 | if (!flag_dec_static) | |
8841 | { | |
cf004230 FR |
8842 | gfc_error ("%s at %C is a DEC extension, enable with " |
8843 | "%<-fdec-static%>", | |
8844 | "AUTOMATIC" | |
8845 | ); | |
34d567d1 FR |
8846 | return MATCH_ERROR; |
8847 | } | |
8848 | ||
8849 | gfc_match (" ::"); | |
8850 | ||
8851 | for (;;) | |
8852 | { | |
8853 | m = gfc_match_symbol (&sym, 0); | |
8854 | switch (m) | |
8855 | { | |
8856 | case MATCH_NO: | |
8857 | break; | |
8858 | ||
8859 | case MATCH_ERROR: | |
8860 | return MATCH_ERROR; | |
8861 | ||
8862 | case MATCH_YES: | |
8863 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
8864 | return MATCH_ERROR; | |
8865 | seen_symbol = true; | |
8866 | break; | |
8867 | } | |
8868 | ||
8869 | if (gfc_match_eos () == MATCH_YES) | |
8870 | break; | |
8871 | if (gfc_match_char (',') != MATCH_YES) | |
8872 | goto syntax; | |
8873 | } | |
8874 | ||
8875 | if (!seen_symbol) | |
8876 | { | |
8877 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
8878 | return MATCH_ERROR; | |
8879 | } | |
8880 | ||
8881 | return MATCH_YES; | |
8882 | ||
8883 | syntax: | |
8884 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
8885 | return MATCH_ERROR; | |
8886 | } | |
8887 | ||
8888 | ||
8889 | match | |
8890 | gfc_match_static (void) | |
8891 | { | |
8892 | gfc_symbol *sym; | |
8893 | match m; | |
8894 | bool seen_symbol = false; | |
8895 | ||
8896 | if (!flag_dec_static) | |
8897 | { | |
cf004230 FR |
8898 | gfc_error ("%s at %C is a DEC extension, enable with " |
8899 | "%<-fdec-static%>", | |
8900 | "STATIC"); | |
34d567d1 FR |
8901 | return MATCH_ERROR; |
8902 | } | |
8903 | ||
8904 | gfc_match (" ::"); | |
8905 | ||
8906 | for (;;) | |
8907 | { | |
8908 | m = gfc_match_symbol (&sym, 0); | |
8909 | switch (m) | |
8910 | { | |
8911 | case MATCH_NO: | |
8912 | break; | |
8913 | ||
8914 | case MATCH_ERROR: | |
8915 | return MATCH_ERROR; | |
8916 | ||
8917 | case MATCH_YES: | |
8918 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
8919 | &gfc_current_locus)) | |
8920 | return MATCH_ERROR; | |
8921 | seen_symbol = true; | |
8922 | break; | |
8923 | } | |
8924 | ||
8925 | if (gfc_match_eos () == MATCH_YES) | |
8926 | break; | |
8927 | if (gfc_match_char (',') != MATCH_YES) | |
8928 | goto syntax; | |
8929 | } | |
8930 | ||
8931 | if (!seen_symbol) | |
8932 | { | |
8933 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
8934 | return MATCH_ERROR; | |
8935 | } | |
8936 | ||
8937 | return MATCH_YES; | |
8938 | ||
8939 | syntax: | |
8940 | gfc_error ("Syntax error in STATIC statement at %C"); | |
8941 | return MATCH_ERROR; | |
8942 | } | |
8943 | ||
8944 | ||
6de9cd9a DN |
8945 | /* Save statements have a special syntax. */ |
8946 | ||
8947 | match | |
8948 | gfc_match_save (void) | |
8949 | { | |
9056bd70 TS |
8950 | char n[GFC_MAX_SYMBOL_LEN+1]; |
8951 | gfc_common_head *c; | |
6de9cd9a DN |
8952 | gfc_symbol *sym; |
8953 | match m; | |
8954 | ||
8955 | if (gfc_match_eos () == MATCH_YES) | |
8956 | { | |
8957 | if (gfc_current_ns->seen_save) | |
8958 | { | |
524af0d6 JB |
8959 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
8960 | "follows previous SAVE statement")) | |
09e87839 | 8961 | return MATCH_ERROR; |
6de9cd9a DN |
8962 | } |
8963 | ||
8964 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
8965 | return MATCH_YES; | |
8966 | } | |
8967 | ||
8968 | if (gfc_current_ns->save_all) | |
8969 | { | |
524af0d6 JB |
8970 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
8971 | "blanket SAVE statement")) | |
09e87839 | 8972 | return MATCH_ERROR; |
6de9cd9a DN |
8973 | } |
8974 | ||
8975 | gfc_match (" ::"); | |
8976 | ||
8977 | for (;;) | |
8978 | { | |
8979 | m = gfc_match_symbol (&sym, 0); | |
8980 | switch (m) | |
8981 | { | |
8982 | case MATCH_YES: | |
70112e2a | 8983 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 8984 | &gfc_current_locus)) |
6de9cd9a DN |
8985 | return MATCH_ERROR; |
8986 | goto next_item; | |
8987 | ||
8988 | case MATCH_NO: | |
8989 | break; | |
8990 | ||
8991 | case MATCH_ERROR: | |
8992 | return MATCH_ERROR; | |
8993 | } | |
8994 | ||
9056bd70 | 8995 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
8996 | if (m == MATCH_ERROR) |
8997 | return MATCH_ERROR; | |
8998 | if (m == MATCH_NO) | |
8999 | goto syntax; | |
9000 | ||
53814b8f | 9001 | c = gfc_get_common (n, 0); |
9056bd70 TS |
9002 | c->saved = 1; |
9003 | ||
6de9cd9a DN |
9004 | gfc_current_ns->seen_save = 1; |
9005 | ||
9006 | next_item: | |
9007 | if (gfc_match_eos () == MATCH_YES) | |
9008 | break; | |
9009 | if (gfc_match_char (',') != MATCH_YES) | |
9010 | goto syntax; | |
9011 | } | |
9012 | ||
9013 | return MATCH_YES; | |
9014 | ||
9015 | syntax: | |
9016 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9017 | return MATCH_ERROR; | |
9018 | } | |
9019 | ||
9020 | ||
06469efd PT |
9021 | match |
9022 | gfc_match_value (void) | |
9023 | { | |
9024 | gfc_symbol *sym; | |
9025 | match m; | |
9026 | ||
9abe5e56 DK |
9027 | /* This is not allowed within a BLOCK construct! */ |
9028 | if (gfc_current_state () == COMP_BLOCK) | |
9029 | { | |
9030 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9031 | return MATCH_ERROR; | |
9032 | } | |
9033 | ||
524af0d6 | 9034 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9035 | return MATCH_ERROR; |
9036 | ||
9037 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9038 | { | |
9039 | return MATCH_ERROR; | |
9040 | } | |
9041 | ||
9042 | if (gfc_match_eos () == MATCH_YES) | |
9043 | goto syntax; | |
9044 | ||
9045 | for(;;) | |
9046 | { | |
9047 | m = gfc_match_symbol (&sym, 0); | |
9048 | switch (m) | |
9049 | { | |
9050 | case MATCH_YES: | |
524af0d6 | 9051 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9052 | return MATCH_ERROR; |
9053 | goto next_item; | |
9054 | ||
9055 | case MATCH_NO: | |
9056 | break; | |
9057 | ||
9058 | case MATCH_ERROR: | |
9059 | return MATCH_ERROR; | |
9060 | } | |
9061 | ||
9062 | next_item: | |
9063 | if (gfc_match_eos () == MATCH_YES) | |
9064 | break; | |
9065 | if (gfc_match_char (',') != MATCH_YES) | |
9066 | goto syntax; | |
9067 | } | |
9068 | ||
9069 | return MATCH_YES; | |
9070 | ||
9071 | syntax: | |
9072 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9073 | return MATCH_ERROR; | |
9074 | } | |
9075 | ||
66e4ab31 | 9076 | |
775e6c3a TB |
9077 | match |
9078 | gfc_match_volatile (void) | |
9079 | { | |
9080 | gfc_symbol *sym; | |
9081 | match m; | |
9082 | ||
524af0d6 | 9083 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9084 | return MATCH_ERROR; |
9085 | ||
9086 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9087 | { | |
9088 | return MATCH_ERROR; | |
9089 | } | |
9090 | ||
9091 | if (gfc_match_eos () == MATCH_YES) | |
9092 | goto syntax; | |
9093 | ||
9094 | for(;;) | |
9095 | { | |
f5acf0f2 | 9096 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9097 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9098 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9099 | switch (m) |
9100 | { | |
9101 | case MATCH_YES: | |
be59db2d TB |
9102 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9103 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9104 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9105 | { | |
c4100eae | 9106 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9107 | "%C, which is use-/host-associated", sym->name); |
9108 | return MATCH_ERROR; | |
9109 | } | |
524af0d6 | 9110 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9111 | return MATCH_ERROR; |
9112 | goto next_item; | |
9113 | ||
9114 | case MATCH_NO: | |
9115 | break; | |
9116 | ||
9117 | case MATCH_ERROR: | |
9118 | return MATCH_ERROR; | |
9119 | } | |
9120 | ||
9121 | next_item: | |
9122 | if (gfc_match_eos () == MATCH_YES) | |
9123 | break; | |
9124 | if (gfc_match_char (',') != MATCH_YES) | |
9125 | goto syntax; | |
9126 | } | |
9127 | ||
9128 | return MATCH_YES; | |
9129 | ||
9130 | syntax: | |
9131 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9132 | return MATCH_ERROR; | |
9133 | } | |
9134 | ||
9135 | ||
1eee5628 TB |
9136 | match |
9137 | gfc_match_asynchronous (void) | |
9138 | { | |
9139 | gfc_symbol *sym; | |
9140 | match m; | |
9141 | ||
524af0d6 | 9142 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9143 | return MATCH_ERROR; |
9144 | ||
9145 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9146 | { | |
9147 | return MATCH_ERROR; | |
9148 | } | |
9149 | ||
9150 | if (gfc_match_eos () == MATCH_YES) | |
9151 | goto syntax; | |
9152 | ||
9153 | for(;;) | |
9154 | { | |
f5acf0f2 | 9155 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9156 | symbols locally. */ |
9157 | m = gfc_match_symbol (&sym, 1); | |
9158 | switch (m) | |
9159 | { | |
9160 | case MATCH_YES: | |
524af0d6 | 9161 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9162 | return MATCH_ERROR; |
9163 | goto next_item; | |
9164 | ||
9165 | case MATCH_NO: | |
9166 | break; | |
9167 | ||
9168 | case MATCH_ERROR: | |
9169 | return MATCH_ERROR; | |
9170 | } | |
9171 | ||
9172 | next_item: | |
9173 | if (gfc_match_eos () == MATCH_YES) | |
9174 | break; | |
9175 | if (gfc_match_char (',') != MATCH_YES) | |
9176 | goto syntax; | |
9177 | } | |
9178 | ||
9179 | return MATCH_YES; | |
9180 | ||
9181 | syntax: | |
9182 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9183 | return MATCH_ERROR; | |
9184 | } | |
9185 | ||
9186 | ||
4668d6f9 PT |
9187 | /* Match a module procedure statement in a submodule. */ |
9188 | ||
9189 | match | |
9190 | gfc_match_submod_proc (void) | |
9191 | { | |
9192 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9193 | gfc_symbol *sym, *fsym; | |
9194 | match m; | |
9195 | gfc_formal_arglist *formal, *head, *tail; | |
9196 | ||
9197 | if (gfc_current_state () != COMP_CONTAINS | |
9198 | || !(gfc_state_stack->previous | |
70112e2a PT |
9199 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9200 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9201 | return MATCH_NO; |
9202 | ||
9203 | m = gfc_match (" module% procedure% %n", name); | |
9204 | if (m != MATCH_YES) | |
9205 | return m; | |
9206 | ||
9207 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9208 | "at %C")) | |
9209 | return MATCH_ERROR; | |
9210 | ||
9211 | if (get_proc_name (name, &sym, false)) | |
9212 | return MATCH_ERROR; | |
9213 | ||
9214 | /* Make sure that the result field is appropriately filled, even though | |
9215 | the result symbol will be replaced later on. */ | |
c064374d | 9216 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9217 | { |
c064374d PT |
9218 | if (sym->tlink->result |
9219 | && sym->tlink->result != sym->tlink) | |
9220 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9221 | else |
9222 | sym->result = sym; | |
9223 | } | |
9224 | ||
9225 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9226 | the symbol existed before. */ | |
9227 | sym->declared_at = gfc_current_locus; | |
9228 | ||
9229 | if (!sym->attr.module_procedure) | |
9230 | return MATCH_ERROR; | |
9231 | ||
9232 | /* Signal match_end to expect "end procedure". */ | |
9233 | sym->abr_modproc_decl = 1; | |
9234 | ||
9235 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9236 | sym->attr.if_source = IFSRC_DECL; | |
9237 | ||
9238 | gfc_new_block = sym; | |
9239 | ||
9240 | /* Make a new formal arglist with the symbols in the procedure | |
9241 | namespace. */ | |
9242 | head = tail = NULL; | |
9243 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9244 | { | |
9245 | if (formal == sym->formal) | |
9246 | head = tail = gfc_get_formal_arglist (); | |
9247 | else | |
9248 | { | |
9249 | tail->next = gfc_get_formal_arglist (); | |
9250 | tail = tail->next; | |
9251 | } | |
9252 | ||
9253 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9254 | goto cleanup; | |
9255 | ||
9256 | tail->sym = fsym; | |
9257 | gfc_set_sym_referenced (fsym); | |
9258 | } | |
9259 | ||
9260 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9261 | interface declaration is cleared. This allows us to add the | |
9262 | explicit interface as is done for other type of procedure. */ | |
9263 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9264 | &gfc_current_locus)) | |
9265 | return MATCH_ERROR; | |
9266 | ||
9267 | if (gfc_match_eos () != MATCH_YES) | |
9268 | { | |
9269 | gfc_syntax_error (ST_MODULE_PROC); | |
9270 | return MATCH_ERROR; | |
9271 | } | |
9272 | ||
9273 | return MATCH_YES; | |
9274 | ||
9275 | cleanup: | |
9276 | gfc_free_formal_arglist (head); | |
9277 | return MATCH_ERROR; | |
9278 | } | |
9279 | ||
9280 | ||
6de9cd9a DN |
9281 | /* Match a module procedure statement. Note that we have to modify |
9282 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9283 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9284 | |
9285 | match | |
9286 | gfc_match_modproc (void) | |
9287 | { | |
9288 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9289 | gfc_symbol *sym; | |
9290 | match m; | |
162b5a21 | 9291 | locus old_locus; |
060fca4a | 9292 | gfc_namespace *module_ns; |
2b77e908 | 9293 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9294 | |
9295 | if (gfc_state_stack->state != COMP_INTERFACE | |
9296 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9297 | || current_interface.type == INTERFACE_NAMELESS |
9298 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9299 | { |
636dff67 SK |
9300 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9301 | "interface"); | |
6de9cd9a DN |
9302 | return MATCH_ERROR; |
9303 | } | |
9304 | ||
060fca4a PT |
9305 | module_ns = gfc_current_ns->parent; |
9306 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9307 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9308 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9309 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9310 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9311 | break; |
9312 | ||
9313 | if (module_ns == NULL) | |
9314 | return MATCH_ERROR; | |
9315 | ||
2b77e908 FXC |
9316 | /* Store the current state of the interface. We will need it if we |
9317 | end up with a syntax error and need to recover. */ | |
9318 | old_interface_head = gfc_current_interface_head (); | |
9319 | ||
162b5a21 SK |
9320 | /* Check if the F2008 optional double colon appears. */ |
9321 | gfc_gobble_whitespace (); | |
9322 | old_locus = gfc_current_locus; | |
9323 | if (gfc_match ("::") == MATCH_YES) | |
9324 | { | |
524af0d6 JB |
9325 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9326 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9327 | return MATCH_ERROR; |
9328 | } | |
9329 | else | |
9330 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9331 | |
6de9cd9a DN |
9332 | for (;;) |
9333 | { | |
2b77e908 | 9334 | bool last = false; |
162b5a21 | 9335 | old_locus = gfc_current_locus; |
2b77e908 | 9336 | |
6de9cd9a DN |
9337 | m = gfc_match_name (name); |
9338 | if (m == MATCH_NO) | |
9339 | goto syntax; | |
9340 | if (m != MATCH_YES) | |
9341 | return MATCH_ERROR; | |
9342 | ||
2b77e908 FXC |
9343 | /* Check for syntax error before starting to add symbols to the |
9344 | current namespace. */ | |
9345 | if (gfc_match_eos () == MATCH_YES) | |
9346 | last = true; | |
162b5a21 | 9347 | |
2b77e908 FXC |
9348 | if (!last && gfc_match_char (',') != MATCH_YES) |
9349 | goto syntax; | |
9350 | ||
9351 | /* Now we're sure the syntax is valid, we process this item | |
9352 | further. */ | |
060fca4a | 9353 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9354 | return MATCH_ERROR; |
9355 | ||
43dfd40c SK |
9356 | if (sym->attr.intrinsic) |
9357 | { | |
9358 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9359 | "PROCEDURE", &old_locus); | |
9360 | return MATCH_ERROR; | |
9361 | } | |
9362 | ||
6de9cd9a | 9363 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9364 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9365 | return MATCH_ERROR; |
9366 | ||
524af0d6 | 9367 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9368 | return MATCH_ERROR; |
9369 | ||
71f77fd7 | 9370 | sym->attr.mod_proc = 1; |
43dfd40c | 9371 | sym->declared_at = old_locus; |
71f77fd7 | 9372 | |
2b77e908 | 9373 | if (last) |
6de9cd9a | 9374 | break; |
6de9cd9a DN |
9375 | } |
9376 | ||
9377 | return MATCH_YES; | |
9378 | ||
9379 | syntax: | |
2b77e908 FXC |
9380 | /* Restore the previous state of the interface. */ |
9381 | interface = gfc_current_interface_head (); | |
9382 | gfc_set_current_interface_head (old_interface_head); | |
9383 | ||
9384 | /* Free the new interfaces. */ | |
9385 | while (interface != old_interface_head) | |
9386 | { | |
9387 | gfc_interface *i = interface->next; | |
cede9502 | 9388 | free (interface); |
2b77e908 FXC |
9389 | interface = i; |
9390 | } | |
9391 | ||
9392 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9393 | gfc_syntax_error (ST_MODULE_PROC); |
9394 | return MATCH_ERROR; | |
9395 | } | |
9396 | ||
9397 | ||
7d1f1e61 | 9398 | /* Check a derived type that is being extended. */ |
42e3d759 | 9399 | |
7d1f1e61 PT |
9400 | static gfc_symbol* |
9401 | check_extended_derived_type (char *name) | |
9402 | { | |
9403 | gfc_symbol *extended; | |
9404 | ||
9405 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9406 | { | |
9407 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9408 | return NULL; | |
9409 | } | |
9410 | ||
42e3d759 JW |
9411 | extended = gfc_find_dt_in_generic (extended); |
9412 | ||
9413 | /* F08:C428. */ | |
7d1f1e61 PT |
9414 | if (!extended) |
9415 | { | |
c4100eae | 9416 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9417 | return NULL; |
9418 | } | |
9419 | ||
9420 | if (extended->attr.flavor != FL_DERIVED) | |
9421 | { | |
c4100eae | 9422 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9423 | "derived type", name); |
9424 | return NULL; | |
9425 | } | |
9426 | ||
9427 | if (extended->attr.is_bind_c) | |
9428 | { | |
c4100eae | 9429 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9430 | "is BIND(C)", extended->name); |
9431 | return NULL; | |
9432 | } | |
9433 | ||
9434 | if (extended->attr.sequence) | |
9435 | { | |
c4100eae | 9436 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9437 | "is a SEQUENCE type", extended->name); |
9438 | return NULL; | |
9439 | } | |
9440 | ||
9441 | return extended; | |
9442 | } | |
9443 | ||
9444 | ||
a8b3b0b6 CR |
9445 | /* Match the optional attribute specifiers for a type declaration. |
9446 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9447 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9448 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9449 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9450 | |
9451 | match | |
7d1f1e61 | 9452 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9453 | { |
a8b3b0b6 | 9454 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9455 | if (gfc_match (" , private") == MATCH_YES) |
9456 | { | |
d51347f9 | 9457 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9458 | { |
d51347f9 TB |
9459 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9460 | "specification part of a module"); | |
6de9cd9a DN |
9461 | return MATCH_ERROR; |
9462 | } | |
9463 | ||
524af0d6 | 9464 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9465 | return MATCH_ERROR; |
6de9cd9a | 9466 | } |
a8b3b0b6 | 9467 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9468 | { |
d51347f9 | 9469 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9470 | { |
d51347f9 TB |
9471 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9472 | "specification part of a module"); | |
6de9cd9a DN |
9473 | return MATCH_ERROR; |
9474 | } | |
9475 | ||
524af0d6 | 9476 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9477 | return MATCH_ERROR; |
6de9cd9a | 9478 | } |
52f49934 | 9479 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9480 | { |
9481 | /* If the type is defined to be bind(c) it then needs to make | |
9482 | sure that all fields are interoperable. This will | |
9483 | need to be a semantic check on the finished derived type. | |
9484 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9485 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9486 | return MATCH_ERROR; |
9487 | ||
9488 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9489 | } | |
52f49934 DK |
9490 | else if (gfc_match (" , abstract") == MATCH_YES) |
9491 | { | |
524af0d6 | 9492 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9493 | return MATCH_ERROR; |
9494 | ||
524af0d6 | 9495 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9496 | return MATCH_ERROR; |
9497 | } | |
524af0d6 | 9498 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9499 | { |
524af0d6 | 9500 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9501 | return MATCH_ERROR; |
9502 | } | |
a8b3b0b6 CR |
9503 | else |
9504 | return MATCH_NO; | |
9505 | ||
9506 | /* If we get here, something matched. */ | |
9507 | return MATCH_YES; | |
9508 | } | |
9509 | ||
9510 | ||
f6288c24 FR |
9511 | /* Common function for type declaration blocks similar to derived types, such |
9512 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9513 | does NOT have a generic symbol matching the name given by the user. | |
9514 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9515 | for the creation of an independent symbol. | |
6442a6f4 | 9516 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9517 | type to be created, and the flavor to add to the resulting symbol. */ |
9518 | ||
9519 | static bool | |
9520 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9521 | gfc_symbol **result) | |
9522 | { | |
9523 | gfc_symbol *sym; | |
9524 | locus where; | |
9525 | ||
9526 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9527 | ||
9528 | if (decl) | |
9529 | where = *decl; | |
9530 | else | |
9531 | where = gfc_current_locus; | |
9532 | ||
9533 | if (gfc_get_symbol (name, NULL, &sym)) | |
9534 | return false; | |
9535 | ||
9536 | if (!sym) | |
9537 | { | |
9538 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9539 | return false; | |
9540 | } | |
9541 | ||
9542 | if (sym->components != NULL || sym->attr.zero_comp) | |
9543 | { | |
2f029c08 | 9544 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9545 | sym->name, &sym->declared_at); |
9546 | return false; | |
9547 | } | |
9548 | ||
9549 | sym->declared_at = where; | |
9550 | ||
9551 | if (sym->attr.flavor != fl | |
9552 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9553 | return false; | |
9554 | ||
9555 | if (!sym->hash_value) | |
9556 | /* Set the hash for the compound name for this type. */ | |
9557 | sym->hash_value = gfc_hash_value (sym); | |
9558 | ||
9559 | /* Normally the type is expected to have been completely parsed by the time | |
9560 | a field declaration with this type is seen. For unions, maps, and nested | |
9561 | structure declarations, we need to indicate that it is okay that we | |
9562 | haven't seen any components yet. This will be updated after the structure | |
9563 | is fully parsed. */ | |
9564 | sym->attr.zero_comp = 0; | |
9565 | ||
9566 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9567 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9568 | ||
9569 | if (result) *result = sym; | |
9570 | ||
9571 | return true; | |
9572 | } | |
9573 | ||
9574 | ||
9575 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9576 | behaves identical to STRUCTURE blocks. */ | |
9577 | ||
9578 | match | |
9579 | gfc_match_map (void) | |
9580 | { | |
05b8fcb4 FR |
9581 | /* Counter used to give unique internal names to map structures. */ |
9582 | static unsigned int gfc_map_id = 0; | |
9583 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9584 | gfc_symbol *sym; | |
9585 | locus old_loc; | |
f6288c24 | 9586 | |
05b8fcb4 | 9587 | old_loc = gfc_current_locus; |
f6288c24 | 9588 | |
05b8fcb4 FR |
9589 | if (gfc_match_eos () != MATCH_YES) |
9590 | { | |
9591 | gfc_error ("Junk after MAP statement at %C"); | |
9592 | gfc_current_locus = old_loc; | |
9593 | return MATCH_ERROR; | |
9594 | } | |
f6288c24 | 9595 | |
05b8fcb4 FR |
9596 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9597 | which are invalid Fortran identifiers. */ | |
9598 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9599 | |
05b8fcb4 FR |
9600 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9601 | return MATCH_ERROR; | |
f6288c24 | 9602 | |
05b8fcb4 | 9603 | gfc_new_block = sym; |
f6288c24 | 9604 | |
05b8fcb4 | 9605 | return MATCH_YES; |
f6288c24 FR |
9606 | } |
9607 | ||
9608 | ||
9609 | /* Match the opening of a UNION block. */ | |
9610 | ||
9611 | match | |
9612 | gfc_match_union (void) | |
9613 | { | |
05b8fcb4 FR |
9614 | /* Counter used to give unique internal names to union types. */ |
9615 | static unsigned int gfc_union_id = 0; | |
9616 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9617 | gfc_symbol *sym; | |
9618 | locus old_loc; | |
f6288c24 | 9619 | |
05b8fcb4 | 9620 | old_loc = gfc_current_locus; |
f6288c24 | 9621 | |
05b8fcb4 FR |
9622 | if (gfc_match_eos () != MATCH_YES) |
9623 | { | |
9624 | gfc_error ("Junk after UNION statement at %C"); | |
9625 | gfc_current_locus = old_loc; | |
9626 | return MATCH_ERROR; | |
9627 | } | |
f6288c24 | 9628 | |
05b8fcb4 FR |
9629 | /* Unions are anonymous so we make up unique names for the symbol table |
9630 | which are invalid Fortran identifiers. */ | |
9631 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9632 | |
05b8fcb4 FR |
9633 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9634 | return MATCH_ERROR; | |
f6288c24 | 9635 | |
05b8fcb4 | 9636 | gfc_new_block = sym; |
f6288c24 | 9637 | |
05b8fcb4 | 9638 | return MATCH_YES; |
f6288c24 FR |
9639 | } |
9640 | ||
9641 | ||
9642 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9643 | matching the beginning of a derived type declaration with a few | |
9644 | twists. The resulting type symbol has no access control or other | |
9645 | interesting attributes. */ | |
9646 | ||
9647 | match | |
9648 | gfc_match_structure_decl (void) | |
9649 | { | |
05b8fcb4 FR |
9650 | /* Counter used to give unique internal names to anonymous structures. */ |
9651 | static unsigned int gfc_structure_id = 0; | |
9652 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9653 | gfc_symbol *sym; | |
9654 | match m; | |
9655 | locus where; | |
f6288c24 | 9656 | |
05b8fcb4 FR |
9657 | if (!flag_dec_structure) |
9658 | { | |
cf004230 FR |
9659 | gfc_error ("%s at %C is a DEC extension, enable with " |
9660 | "%<-fdec-structure%>", | |
9661 | "STRUCTURE"); | |
05b8fcb4 FR |
9662 | return MATCH_ERROR; |
9663 | } | |
f6288c24 | 9664 | |
05b8fcb4 | 9665 | name[0] = '\0'; |
f6288c24 | 9666 | |
05b8fcb4 FR |
9667 | m = gfc_match (" /%n/", name); |
9668 | if (m != MATCH_YES) | |
9669 | { | |
9670 | /* Non-nested structure declarations require a structure name. */ | |
9671 | if (!gfc_comp_struct (gfc_current_state ())) | |
9672 | { | |
9673 | gfc_error ("Structure name expected in non-nested structure " | |
9674 | "declaration at %C"); | |
9675 | return MATCH_ERROR; | |
9676 | } | |
9677 | /* This is an anonymous structure; make up a unique name for it | |
9678 | (upper-case letters never make it to symbol names from the source). | |
9679 | The important thing is initializing the type variable | |
9680 | and setting gfc_new_symbol, which is immediately used by | |
9681 | parse_structure () and variable_decl () to add components of | |
9682 | this type. */ | |
9683 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9684 | } | |
f6288c24 | 9685 | |
05b8fcb4 FR |
9686 | where = gfc_current_locus; |
9687 | /* No field list allowed after non-nested structure declaration. */ | |
9688 | if (!gfc_comp_struct (gfc_current_state ()) | |
9689 | && gfc_match_eos () != MATCH_YES) | |
9690 | { | |
9691 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9692 | return MATCH_ERROR; | |
9693 | } | |
f6288c24 | 9694 | |
05b8fcb4 FR |
9695 | /* Make sure the name is not the name of an intrinsic type. */ |
9696 | if (gfc_is_intrinsic_typename (name)) | |
9697 | { | |
2f029c08 | 9698 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
9699 | " intrinsic type", name); |
9700 | return MATCH_ERROR; | |
9701 | } | |
f6288c24 | 9702 | |
05b8fcb4 FR |
9703 | /* Store the actual type symbol for the structure with an upper-case first |
9704 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 9705 | |
51f03c6b | 9706 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 9707 | return MATCH_ERROR; |
f6288c24 | 9708 | |
05b8fcb4 FR |
9709 | gfc_new_block = sym; |
9710 | return MATCH_YES; | |
f6288c24 FR |
9711 | } |
9712 | ||
90051c26 FR |
9713 | |
9714 | /* This function does some work to determine which matcher should be used to | |
9715 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE | |
9716 | * as an alias for PRINT from derived type declarations, TYPE IS statements, | |
9717 | * and derived type data declarations. */ | |
9718 | ||
9719 | match | |
9720 | gfc_match_type (gfc_statement *st) | |
9721 | { | |
9722 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9723 | match m; | |
9724 | locus old_loc; | |
9725 | ||
9726 | /* Requires -fdec. */ | |
9727 | if (!flag_dec) | |
9728 | return MATCH_NO; | |
9729 | ||
9730 | m = gfc_match ("type"); | |
9731 | if (m != MATCH_YES) | |
9732 | return m; | |
9733 | /* If we already have an error in the buffer, it is probably from failing to | |
9734 | * match a derived type data declaration. Let it happen. */ | |
9735 | else if (gfc_error_flag_test ()) | |
9736 | return MATCH_NO; | |
9737 | ||
9738 | old_loc = gfc_current_locus; | |
9739 | *st = ST_NONE; | |
9740 | ||
9741 | /* If we see an attribute list before anything else it's definitely a derived | |
9742 | * type declaration. */ | |
9743 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
9744 | { | |
9745 | gfc_current_locus = old_loc; | |
9746 | *st = ST_DERIVED_DECL; | |
9747 | return gfc_match_derived_decl (); | |
9748 | } | |
9749 | ||
9750 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9751 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9752 | m = gfc_match_name (name); | |
9753 | if (m != MATCH_YES) | |
9754 | { | |
9755 | /* Let print match if it can, otherwise throw an error from | |
9756 | * gfc_match_derived_decl. */ | |
9757 | gfc_current_locus = old_loc; | |
9758 | if (gfc_match_print () == MATCH_YES) | |
9759 | { | |
9760 | *st = ST_WRITE; | |
9761 | return MATCH_YES; | |
9762 | } | |
9763 | gfc_current_locus = old_loc; | |
9764 | *st = ST_DERIVED_DECL; | |
9765 | return gfc_match_derived_decl (); | |
9766 | } | |
9767 | ||
9768 | /* A derived type declaration requires an EOS. Without it, assume print. */ | |
9769 | m = gfc_match_eos (); | |
9770 | if (m == MATCH_NO) | |
9771 | { | |
9772 | /* Check manually for TYPE IS (... - this is invalid print syntax. */ | |
9773 | if (strncmp ("is", name, 3) == 0 | |
9774 | && gfc_match (" (", name) == MATCH_YES) | |
9775 | { | |
9776 | gfc_current_locus = old_loc; | |
9777 | gcc_assert (gfc_match (" is") == MATCH_YES); | |
9778 | *st = ST_TYPE_IS; | |
9779 | return gfc_match_type_is (); | |
9780 | } | |
9781 | gfc_current_locus = old_loc; | |
9782 | *st = ST_WRITE; | |
9783 | return gfc_match_print (); | |
9784 | } | |
9785 | else | |
9786 | { | |
9787 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9788 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9789 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9790 | * symbol which can be printed. */ | |
9791 | gfc_current_locus = old_loc; | |
9792 | m = gfc_match_derived_decl (); | |
9793 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9794 | { | |
9795 | *st = ST_DERIVED_DECL; | |
9796 | return m; | |
9797 | } | |
9798 | gfc_current_locus = old_loc; | |
9799 | *st = ST_WRITE; | |
9800 | return gfc_match_print (); | |
9801 | } | |
9802 | ||
9803 | return MATCH_NO; | |
9804 | } | |
9805 | ||
9806 | ||
a8b3b0b6 CR |
9807 | /* Match the beginning of a derived type declaration. If a type name |
9808 | was the result of a function, then it is possible to have a symbol | |
9809 | already to be known as a derived type yet have no components. */ | |
9810 | ||
9811 | match | |
9812 | gfc_match_derived_decl (void) | |
9813 | { | |
9814 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 9815 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 9816 | symbol_attribute attr; |
c3f34952 | 9817 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 9818 | gfc_symbol *extended; |
a8b3b0b6 CR |
9819 | match m; |
9820 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 9821 | bool seen_attr = false; |
c3f34952 | 9822 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
9823 | bool parameterized_type = false; |
9824 | bool seen_colons = false; | |
a8b3b0b6 | 9825 | |
f6288c24 | 9826 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
9827 | return MATCH_NO; |
9828 | ||
7d1f1e61 PT |
9829 | name[0] = '\0'; |
9830 | parent[0] = '\0'; | |
a8b3b0b6 | 9831 | gfc_clear_attr (&attr); |
7d1f1e61 | 9832 | extended = NULL; |
a8b3b0b6 CR |
9833 | |
9834 | do | |
9835 | { | |
7d1f1e61 | 9836 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
9837 | if (is_type_attr_spec == MATCH_ERROR) |
9838 | return MATCH_ERROR; | |
e7303e85 FXC |
9839 | if (is_type_attr_spec == MATCH_YES) |
9840 | seen_attr = true; | |
a8b3b0b6 | 9841 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 9842 | |
63a3341a PT |
9843 | /* Deal with derived type extensions. The extension attribute has |
9844 | been added to 'attr' but now the parent type must be found and | |
9845 | checked. */ | |
7d1f1e61 PT |
9846 | if (parent[0]) |
9847 | extended = check_extended_derived_type (parent); | |
9848 | ||
9849 | if (parent[0] && !extended) | |
9850 | return MATCH_ERROR; | |
9851 | ||
5bab4c96 PT |
9852 | m = gfc_match (" ::"); |
9853 | if (m == MATCH_YES) | |
9854 | { | |
9855 | seen_colons = true; | |
9856 | } | |
9857 | else if (seen_attr) | |
6de9cd9a DN |
9858 | { |
9859 | gfc_error ("Expected :: in TYPE definition at %C"); | |
9860 | return MATCH_ERROR; | |
9861 | } | |
9862 | ||
5bab4c96 | 9863 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
9864 | if (m != MATCH_YES) |
9865 | return m; | |
9866 | ||
5bab4c96 PT |
9867 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
9868 | derived type named 'is'. | |
9869 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
9870 | and checking if this is a(n intrinsic) typename. his picks up | |
9871 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
9872 | if (gfc_peek_ascii_char () == '(') | |
9873 | { | |
9874 | if (gfc_current_state () == COMP_SELECT_TYPE | |
9875 | || (!seen_colons && !strcmp (name, "is"))) | |
9876 | return MATCH_NO; | |
9877 | parameterized_type = true; | |
9878 | } | |
9879 | ||
9880 | m = gfc_match_eos (); | |
9881 | if (m != MATCH_YES && !parameterized_type) | |
9882 | return m; | |
9883 | ||
e9c06563 TB |
9884 | /* Make sure the name is not the name of an intrinsic type. */ |
9885 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 9886 | { |
c4100eae | 9887 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 9888 | "type", name); |
6de9cd9a DN |
9889 | return MATCH_ERROR; |
9890 | } | |
9891 | ||
c3f34952 | 9892 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
9893 | return MATCH_ERROR; |
9894 | ||
c3f34952 | 9895 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 9896 | { |
c4100eae | 9897 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
9898 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
9899 | return MATCH_ERROR; | |
9900 | } | |
9901 | ||
9902 | if (!gensym->attr.generic | |
524af0d6 | 9903 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
9904 | return MATCH_ERROR; |
9905 | ||
9906 | if (!gensym->attr.function | |
524af0d6 | 9907 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
9908 | return MATCH_ERROR; |
9909 | ||
9910 | sym = gfc_find_dt_in_generic (gensym); | |
9911 | ||
9912 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
9913 | { | |
c4100eae | 9914 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 9915 | "defined", sym->name); |
6de9cd9a DN |
9916 | return MATCH_ERROR; |
9917 | } | |
9918 | ||
c3f34952 TB |
9919 | if (!sym) |
9920 | { | |
9921 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 9922 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 9923 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
9924 | head = gensym->generic; |
9925 | intr = gfc_get_interface (); | |
9926 | intr->sym = sym; | |
9927 | intr->where = gfc_current_locus; | |
9928 | intr->sym->declared_at = gfc_current_locus; | |
9929 | intr->next = head; | |
9930 | gensym->generic = intr; | |
9931 | gensym->attr.if_source = IFSRC_DECL; | |
9932 | } | |
9933 | ||
6de9cd9a DN |
9934 | /* The symbol may already have the derived attribute without the |
9935 | components. The ways this can happen is via a function | |
9936 | definition, an INTRINSIC statement or a subtype in another | |
9937 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 9938 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 9939 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 9940 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
9941 | return MATCH_ERROR; |
9942 | ||
6de9cd9a | 9943 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 9944 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 9945 | return MATCH_ERROR; |
c3f34952 TB |
9946 | else if (sym->attr.access == ACCESS_UNKNOWN |
9947 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 9948 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 9949 | sym->name, NULL)) |
c3f34952 TB |
9950 | return MATCH_ERROR; |
9951 | ||
9952 | if (sym->attr.access != ACCESS_UNKNOWN | |
9953 | && gensym->attr.access == ACCESS_UNKNOWN) | |
9954 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 9955 | |
a8b3b0b6 CR |
9956 | /* See if the derived type was labeled as bind(c). */ |
9957 | if (attr.is_bind_c != 0) | |
9958 | sym->attr.is_bind_c = attr.is_bind_c; | |
9959 | ||
34523524 DK |
9960 | /* Construct the f2k_derived namespace if it is not yet there. */ |
9961 | if (!sym->f2k_derived) | |
9962 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 9963 | |
5bab4c96 PT |
9964 | if (parameterized_type) |
9965 | { | |
276515e6 PT |
9966 | /* Ignore error or mismatches by going to the end of the statement |
9967 | in order to avoid the component declarations causing problems. */ | |
9968 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
9969 | if (m != MATCH_YES) | |
9970 | gfc_error_recovery (); | |
5bab4c96 PT |
9971 | m = gfc_match_eos (); |
9972 | if (m != MATCH_YES) | |
f59986b2 PT |
9973 | { |
9974 | gfc_error_recovery (); | |
9975 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
9976 | } | |
5bab4c96 PT |
9977 | sym->attr.pdt_template = 1; |
9978 | } | |
9979 | ||
7d1f1e61 PT |
9980 | if (extended && !sym->components) |
9981 | { | |
9982 | gfc_component *p; | |
5bab4c96 | 9983 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
9984 | |
9985 | /* Add the extended derived type as the first component. */ | |
9986 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
9987 | extended->refs++; |
9988 | gfc_set_sym_referenced (extended); | |
9989 | ||
9990 | p->ts.type = BT_DERIVED; | |
bc21d315 | 9991 | p->ts.u.derived = extended; |
7d1f1e61 | 9992 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 9993 | |
7c1dab0d JW |
9994 | /* Set extension level. */ |
9995 | if (extended->attr.extension == 255) | |
9996 | { | |
9997 | /* Since the extension field is 8 bit wide, we can only have | |
9998 | up to 255 extension levels. */ | |
c4100eae | 9999 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
10000 | extended->name, &extended->declared_at); |
10001 | return MATCH_ERROR; | |
10002 | } | |
10003 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
10004 | |
10005 | /* Provide the links between the extended type and its extension. */ | |
10006 | if (!extended->f2k_derived) | |
10007 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
10008 | |
10009 | /* Copy the extended type-param-name-list from the extended type, | |
10010 | append those of the extension and add the whole lot to the | |
10011 | extension. */ | |
10012 | if (extended->attr.pdt_template) | |
10013 | { | |
10014 | g = h = NULL; | |
10015 | sym->attr.pdt_template = 1; | |
10016 | for (f = extended->formal; f; f = f->next) | |
10017 | { | |
10018 | if (f == extended->formal) | |
10019 | { | |
10020 | g = gfc_get_formal_arglist (); | |
10021 | h = g; | |
10022 | } | |
10023 | else | |
10024 | { | |
10025 | g->next = gfc_get_formal_arglist (); | |
10026 | g = g->next; | |
10027 | } | |
10028 | g->sym = f->sym; | |
10029 | } | |
10030 | g->next = sym->formal; | |
10031 | sym->formal = h; | |
10032 | } | |
7d1f1e61 PT |
10033 | } |
10034 | ||
7c1dab0d JW |
10035 | if (!sym->hash_value) |
10036 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10037 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10038 | |
52f49934 DK |
10039 | /* Take over the ABSTRACT attribute. */ |
10040 | sym->attr.abstract = attr.abstract; | |
10041 | ||
6de9cd9a DN |
10042 | gfc_new_block = sym; |
10043 | ||
10044 | return MATCH_YES; | |
10045 | } | |
83d890b9 AL |
10046 | |
10047 | ||
f5acf0f2 | 10048 | /* Cray Pointees can be declared as: |
b3aefde2 | 10049 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10050 | |
32e8bb8e | 10051 | match |
83d890b9 AL |
10052 | gfc_mod_pointee_as (gfc_array_spec *as) |
10053 | { | |
10054 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10055 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10056 | as->cp_was_assumed = true; |
83d890b9 AL |
10057 | else if (as->type == AS_ASSUMED_SHAPE) |
10058 | { | |
10059 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10060 | return MATCH_ERROR; | |
10061 | } | |
10062 | return MATCH_YES; | |
10063 | } | |
25d8f0a2 TS |
10064 | |
10065 | ||
f5acf0f2 PT |
10066 | /* Match the enum definition statement, here we are trying to match |
10067 | the first line of enum definition statement. | |
25d8f0a2 TS |
10068 | Returns MATCH_YES if match is found. */ |
10069 | ||
10070 | match | |
10071 | gfc_match_enum (void) | |
10072 | { | |
10073 | match m; | |
f5acf0f2 | 10074 | |
25d8f0a2 TS |
10075 | m = gfc_match_eos (); |
10076 | if (m != MATCH_YES) | |
10077 | return m; | |
10078 | ||
524af0d6 | 10079 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10080 | return MATCH_ERROR; |
10081 | ||
10082 | return MATCH_YES; | |
10083 | } | |
10084 | ||
10085 | ||
31224396 SK |
10086 | /* Returns an initializer whose value is one higher than the value of the |
10087 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10088 | initializers value will be set to zero. The initializer's kind | |
10089 | will be set to gfc_c_int_kind. | |
10090 | ||
10091 | If -fshort-enums is given, the appropriate kind will be selected | |
10092 | later after all enumerators have been parsed. A warning is issued | |
10093 | here if an initializer exceeds gfc_c_int_kind. */ | |
10094 | ||
10095 | static gfc_expr * | |
10096 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10097 | { | |
10098 | gfc_expr *result; | |
b7e75771 | 10099 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10100 | |
10101 | mpz_init (result->value.integer); | |
10102 | ||
10103 | if (last_initializer != NULL) | |
10104 | { | |
10105 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10106 | result->where = last_initializer->where; | |
10107 | ||
10108 | if (gfc_check_integer_range (result->value.integer, | |
10109 | gfc_c_int_kind) != ARITH_OK) | |
10110 | { | |
10111 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10112 | return NULL; | |
10113 | } | |
10114 | } | |
10115 | else | |
10116 | { | |
10117 | /* Control comes here, if it's the very first enumerator and no | |
10118 | initializer has been given. It will be initialized to zero. */ | |
10119 | mpz_set_si (result->value.integer, 0); | |
10120 | } | |
10121 | ||
10122 | return result; | |
10123 | } | |
10124 | ||
10125 | ||
6133c68a TS |
10126 | /* Match a variable name with an optional initializer. When this |
10127 | subroutine is called, a variable is expected to be parsed next. | |
10128 | Depending on what is happening at the moment, updates either the | |
10129 | symbol table or the current interface. */ | |
10130 | ||
10131 | static match | |
10132 | enumerator_decl (void) | |
10133 | { | |
10134 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10135 | gfc_expr *initializer; | |
10136 | gfc_array_spec *as = NULL; | |
10137 | gfc_symbol *sym; | |
10138 | locus var_locus; | |
10139 | match m; | |
524af0d6 | 10140 | bool t; |
6133c68a TS |
10141 | locus old_locus; |
10142 | ||
10143 | initializer = NULL; | |
10144 | old_locus = gfc_current_locus; | |
10145 | ||
10146 | /* When we get here, we've just matched a list of attributes and | |
10147 | maybe a type and a double colon. The next thing we expect to see | |
10148 | is the name of the symbol. */ | |
10149 | m = gfc_match_name (name); | |
10150 | if (m != MATCH_YES) | |
10151 | goto cleanup; | |
10152 | ||
10153 | var_locus = gfc_current_locus; | |
10154 | ||
10155 | /* OK, we've successfully matched the declaration. Now put the | |
10156 | symbol in the current namespace. If we fail to create the symbol, | |
10157 | bail out. */ | |
524af0d6 | 10158 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10159 | { |
10160 | m = MATCH_ERROR; | |
10161 | goto cleanup; | |
10162 | } | |
10163 | ||
10164 | /* The double colon must be present in order to have initializers. | |
10165 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10166 | if (colon_seen) | |
10167 | { | |
10168 | if (gfc_match_char ('=') == MATCH_YES) | |
10169 | { | |
10170 | m = gfc_match_init_expr (&initializer); | |
10171 | if (m == MATCH_NO) | |
10172 | { | |
10173 | gfc_error ("Expected an initialization expression at %C"); | |
10174 | m = MATCH_ERROR; | |
10175 | } | |
10176 | ||
10177 | if (m != MATCH_YES) | |
10178 | goto cleanup; | |
10179 | } | |
10180 | } | |
10181 | ||
10182 | /* If we do not have an initializer, the initialization value of the | |
10183 | previous enumerator (stored in last_initializer) is incremented | |
10184 | by 1 and is used to initialize the current enumerator. */ | |
10185 | if (initializer == NULL) | |
31224396 | 10186 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10187 | |
6133c68a TS |
10188 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10189 | { | |
01e64c3d JJ |
10190 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10191 | &var_locus); | |
d51347f9 | 10192 | m = MATCH_ERROR; |
6133c68a TS |
10193 | goto cleanup; |
10194 | } | |
10195 | ||
10196 | /* Store this current initializer, for the next enumerator variable | |
10197 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10198 | use last_initializer below. */ | |
10199 | last_initializer = initializer; | |
10200 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10201 | ||
10202 | /* Maintain enumerator history. */ | |
10203 | gfc_find_symbol (name, NULL, 0, &sym); | |
10204 | create_enum_history (sym, last_initializer); | |
10205 | ||
524af0d6 | 10206 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10207 | |
10208 | cleanup: | |
10209 | /* Free stuff up and return. */ | |
10210 | gfc_free_expr (initializer); | |
10211 | ||
10212 | return m; | |
10213 | } | |
10214 | ||
10215 | ||
66e4ab31 | 10216 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10217 | |
10218 | match | |
10219 | gfc_match_enumerator_def (void) | |
10220 | { | |
10221 | match m; | |
524af0d6 | 10222 | bool t; |
d51347f9 | 10223 | |
25d8f0a2 | 10224 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10225 | |
25d8f0a2 TS |
10226 | m = gfc_match (" enumerator"); |
10227 | if (m != MATCH_YES) | |
10228 | return m; | |
6133c68a TS |
10229 | |
10230 | m = gfc_match (" :: "); | |
10231 | if (m == MATCH_ERROR) | |
10232 | return m; | |
10233 | ||
10234 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10235 | |
25d8f0a2 TS |
10236 | if (gfc_current_state () != COMP_ENUM) |
10237 | { | |
10238 | gfc_error ("ENUM definition statement expected before %C"); | |
10239 | gfc_free_enum_history (); | |
10240 | return MATCH_ERROR; | |
10241 | } | |
10242 | ||
10243 | (¤t_ts)->type = BT_INTEGER; | |
10244 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10245 | |
6133c68a TS |
10246 | gfc_clear_attr (¤t_attr); |
10247 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10248 | if (!t) |
25d8f0a2 | 10249 | { |
6133c68a | 10250 | m = MATCH_ERROR; |
25d8f0a2 TS |
10251 | goto cleanup; |
10252 | } | |
10253 | ||
25d8f0a2 TS |
10254 | for (;;) |
10255 | { | |
6133c68a | 10256 | m = enumerator_decl (); |
25d8f0a2 | 10257 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10258 | { |
10259 | gfc_free_enum_history (); | |
10260 | goto cleanup; | |
10261 | } | |
25d8f0a2 TS |
10262 | if (m == MATCH_NO) |
10263 | break; | |
10264 | ||
10265 | if (gfc_match_eos () == MATCH_YES) | |
10266 | goto cleanup; | |
10267 | if (gfc_match_char (',') != MATCH_YES) | |
10268 | break; | |
10269 | } | |
10270 | ||
10271 | if (gfc_current_state () == COMP_ENUM) | |
10272 | { | |
10273 | gfc_free_enum_history (); | |
10274 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10275 | m = MATCH_ERROR; | |
10276 | } | |
10277 | ||
10278 | cleanup: | |
10279 | gfc_free_array_spec (current_as); | |
10280 | current_as = NULL; | |
10281 | return m; | |
10282 | ||
10283 | } | |
10284 | ||
f6fad28e | 10285 | |
30b608eb DK |
10286 | /* Match binding attributes. */ |
10287 | ||
10288 | static match | |
713485cc | 10289 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10290 | { |
10291 | bool found_passing = false; | |
713485cc | 10292 | bool seen_ptr = false; |
90661f26 | 10293 | match m = MATCH_YES; |
30b608eb | 10294 | |
eea58adb | 10295 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10296 | this case the defaults are in there. */ |
10297 | ba->access = ACCESS_UNKNOWN; | |
10298 | ba->pass_arg = NULL; | |
10299 | ba->pass_arg_num = 0; | |
10300 | ba->nopass = 0; | |
10301 | ba->non_overridable = 0; | |
b0e5fa94 | 10302 | ba->deferred = 0; |
90661f26 | 10303 | ba->ppc = ppc; |
30b608eb DK |
10304 | |
10305 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10306 | m = gfc_match_char (','); |
10307 | if (m == MATCH_NO) | |
10308 | goto done; | |
30b608eb DK |
10309 | |
10310 | do | |
10311 | { | |
e157f736 DK |
10312 | /* Access specifier. */ |
10313 | ||
10314 | m = gfc_match (" public"); | |
30b608eb DK |
10315 | if (m == MATCH_ERROR) |
10316 | goto error; | |
10317 | if (m == MATCH_YES) | |
10318 | { | |
e157f736 | 10319 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10320 | { |
e157f736 | 10321 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10322 | goto error; |
10323 | } | |
10324 | ||
e157f736 | 10325 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10326 | continue; |
10327 | } | |
10328 | ||
e157f736 | 10329 | m = gfc_match (" private"); |
30b608eb DK |
10330 | if (m == MATCH_ERROR) |
10331 | goto error; | |
10332 | if (m == MATCH_YES) | |
10333 | { | |
e157f736 | 10334 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10335 | { |
e157f736 | 10336 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10337 | goto error; |
10338 | } | |
10339 | ||
e157f736 | 10340 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10341 | continue; |
10342 | } | |
10343 | ||
e157f736 DK |
10344 | /* If inside GENERIC, the following is not allowed. */ |
10345 | if (!generic) | |
30b608eb | 10346 | { |
30b608eb | 10347 | |
e157f736 DK |
10348 | /* NOPASS flag. */ |
10349 | m = gfc_match (" nopass"); | |
10350 | if (m == MATCH_ERROR) | |
10351 | goto error; | |
10352 | if (m == MATCH_YES) | |
30b608eb | 10353 | { |
e157f736 DK |
10354 | if (found_passing) |
10355 | { | |
10356 | gfc_error ("Binding attributes already specify passing," | |
10357 | " illegal NOPASS at %C"); | |
10358 | goto error; | |
10359 | } | |
10360 | ||
10361 | found_passing = true; | |
10362 | ba->nopass = 1; | |
10363 | continue; | |
30b608eb DK |
10364 | } |
10365 | ||
e157f736 DK |
10366 | /* PASS possibly including argument. */ |
10367 | m = gfc_match (" pass"); | |
10368 | if (m == MATCH_ERROR) | |
10369 | goto error; | |
10370 | if (m == MATCH_YES) | |
30b608eb | 10371 | { |
e157f736 DK |
10372 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10373 | ||
10374 | if (found_passing) | |
10375 | { | |
10376 | gfc_error ("Binding attributes already specify passing," | |
10377 | " illegal PASS at %C"); | |
10378 | goto error; | |
10379 | } | |
10380 | ||
10381 | m = gfc_match (" ( %n )", arg); | |
10382 | if (m == MATCH_ERROR) | |
10383 | goto error; | |
10384 | if (m == MATCH_YES) | |
51f03c6b | 10385 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10386 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10387 | ||
10388 | found_passing = true; | |
10389 | ba->nopass = 0; | |
10390 | continue; | |
30b608eb DK |
10391 | } |
10392 | ||
713485cc JW |
10393 | if (ppc) |
10394 | { | |
10395 | /* POINTER flag. */ | |
10396 | m = gfc_match (" pointer"); | |
10397 | if (m == MATCH_ERROR) | |
10398 | goto error; | |
10399 | if (m == MATCH_YES) | |
10400 | { | |
10401 | if (seen_ptr) | |
10402 | { | |
10403 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10404 | goto error; | |
10405 | } | |
10406 | ||
10407 | seen_ptr = true; | |
713485cc JW |
10408 | continue; |
10409 | } | |
10410 | } | |
10411 | else | |
10412 | { | |
10413 | /* NON_OVERRIDABLE flag. */ | |
10414 | m = gfc_match (" non_overridable"); | |
10415 | if (m == MATCH_ERROR) | |
10416 | goto error; | |
10417 | if (m == MATCH_YES) | |
10418 | { | |
10419 | if (ba->non_overridable) | |
10420 | { | |
10421 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10422 | goto error; | |
10423 | } | |
10424 | ||
10425 | ba->non_overridable = 1; | |
10426 | continue; | |
10427 | } | |
10428 | ||
10429 | /* DEFERRED flag. */ | |
10430 | m = gfc_match (" deferred"); | |
10431 | if (m == MATCH_ERROR) | |
10432 | goto error; | |
10433 | if (m == MATCH_YES) | |
10434 | { | |
10435 | if (ba->deferred) | |
10436 | { | |
10437 | gfc_error ("Duplicate DEFERRED at %C"); | |
10438 | goto error; | |
10439 | } | |
10440 | ||
10441 | ba->deferred = 1; | |
10442 | continue; | |
10443 | } | |
10444 | } | |
10445 | ||
30b608eb DK |
10446 | } |
10447 | ||
10448 | /* Nothing matching found. */ | |
e157f736 DK |
10449 | if (generic) |
10450 | gfc_error ("Expected access-specifier at %C"); | |
10451 | else | |
10452 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10453 | goto error; |
10454 | } | |
10455 | while (gfc_match_char (',') == MATCH_YES); | |
10456 | ||
b0e5fa94 DK |
10457 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10458 | if (ba->non_overridable && ba->deferred) | |
10459 | { | |
10460 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10461 | goto error; | |
10462 | } | |
10463 | ||
90661f26 JW |
10464 | m = MATCH_YES; |
10465 | ||
10466 | done: | |
e157f736 DK |
10467 | if (ba->access == ACCESS_UNKNOWN) |
10468 | ba->access = gfc_typebound_default_access; | |
10469 | ||
713485cc JW |
10470 | if (ppc && !seen_ptr) |
10471 | { | |
10472 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10473 | " at %C"); | |
10474 | goto error; | |
10475 | } | |
10476 | ||
90661f26 | 10477 | return m; |
30b608eb DK |
10478 | |
10479 | error: | |
30b608eb DK |
10480 | return MATCH_ERROR; |
10481 | } | |
10482 | ||
10483 | ||
10484 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10485 | ||
10486 | static match | |
10487 | match_procedure_in_type (void) | |
10488 | { | |
10489 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10490 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10491 | char* target = NULL, *ifc = NULL; |
3e15518b | 10492 | gfc_typebound_proc tb; |
30b608eb DK |
10493 | bool seen_colons; |
10494 | bool seen_attrs; | |
10495 | match m; | |
10496 | gfc_symtree* stree; | |
10497 | gfc_namespace* ns; | |
10498 | gfc_symbol* block; | |
1be17993 | 10499 | int num; |
30b608eb DK |
10500 | |
10501 | /* Check current state. */ | |
10502 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10503 | block = gfc_state_stack->previous->sym; | |
10504 | gcc_assert (block); | |
10505 | ||
b0e5fa94 | 10506 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10507 | if (gfc_match (" (") == MATCH_YES) |
10508 | { | |
b0e5fa94 DK |
10509 | m = gfc_match_name (target_buf); |
10510 | if (m == MATCH_ERROR) | |
10511 | return m; | |
10512 | if (m != MATCH_YES) | |
10513 | { | |
a4d9b221 | 10514 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10515 | return MATCH_ERROR; |
10516 | } | |
10517 | ||
10518 | if (gfc_match (" )") != MATCH_YES) | |
10519 | { | |
a4d9b221 | 10520 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10521 | return MATCH_ERROR; |
10522 | } | |
10523 | ||
1be17993 | 10524 | ifc = target_buf; |
30b608eb DK |
10525 | } |
10526 | ||
10527 | /* Construct the data structure. */ | |
ff5b6492 | 10528 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10529 | tb.where = gfc_current_locus; |
30b608eb DK |
10530 | |
10531 | /* Match binding attributes. */ | |
3e15518b | 10532 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10533 | if (m == MATCH_ERROR) |
10534 | return m; | |
10535 | seen_attrs = (m == MATCH_YES); | |
10536 | ||
1be17993 | 10537 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10538 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10539 | { |
10540 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10541 | return MATCH_ERROR; | |
10542 | } | |
3e15518b | 10543 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10544 | { |
10545 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10546 | return MATCH_ERROR; | |
10547 | } | |
10548 | ||
30b608eb DK |
10549 | /* Match the colons. */ |
10550 | m = gfc_match (" ::"); | |
10551 | if (m == MATCH_ERROR) | |
10552 | return m; | |
10553 | seen_colons = (m == MATCH_YES); | |
10554 | if (seen_attrs && !seen_colons) | |
10555 | { | |
a4d9b221 | 10556 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10557 | return MATCH_ERROR; |
10558 | } | |
10559 | ||
f5acf0f2 | 10560 | /* Match the binding names. */ |
1be17993 | 10561 | for(num=1;;num++) |
30b608eb | 10562 | { |
1be17993 JW |
10563 | m = gfc_match_name (name); |
10564 | if (m == MATCH_ERROR) | |
10565 | return m; | |
10566 | if (m == MATCH_NO) | |
b0e5fa94 | 10567 | { |
1be17993 | 10568 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10569 | return MATCH_ERROR; |
10570 | } | |
10571 | ||
524af0d6 | 10572 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10573 | return MATCH_ERROR; |
30b608eb | 10574 | |
1be17993 JW |
10575 | /* Try to match the '=> target', if it's there. */ |
10576 | target = ifc; | |
10577 | m = gfc_match (" =>"); | |
30b608eb DK |
10578 | if (m == MATCH_ERROR) |
10579 | return m; | |
1be17993 | 10580 | if (m == MATCH_YES) |
30b608eb | 10581 | { |
3e15518b | 10582 | if (tb.deferred) |
1be17993 | 10583 | { |
a4d9b221 | 10584 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10585 | return MATCH_ERROR; |
10586 | } | |
10587 | ||
10588 | if (!seen_colons) | |
10589 | { | |
a4d9b221 | 10590 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10591 | " at %C"); |
10592 | return MATCH_ERROR; | |
10593 | } | |
10594 | ||
10595 | m = gfc_match_name (target_buf); | |
10596 | if (m == MATCH_ERROR) | |
10597 | return m; | |
10598 | if (m == MATCH_NO) | |
10599 | { | |
a4d9b221 | 10600 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10601 | return MATCH_ERROR; |
10602 | } | |
10603 | target = target_buf; | |
30b608eb | 10604 | } |
30b608eb | 10605 | |
1be17993 JW |
10606 | /* If no target was found, it has the same name as the binding. */ |
10607 | if (!target) | |
10608 | target = name; | |
30b608eb | 10609 | |
1be17993 JW |
10610 | /* Get the namespace to insert the symbols into. */ |
10611 | ns = block->f2k_derived; | |
10612 | gcc_assert (ns); | |
30b608eb | 10613 | |
1be17993 | 10614 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10615 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10616 | { |
c4100eae | 10617 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10618 | "is not ABSTRACT", block->name); |
10619 | return MATCH_ERROR; | |
10620 | } | |
30b608eb | 10621 | |
1be17993 | 10622 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10623 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10624 | be already there but then typebound is still NULL. */ |
10625 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10626 | if (stree && stree->n.tb) |
1be17993 | 10627 | { |
c4100eae MLI |
10628 | gfc_error ("There is already a procedure with binding name %qs for " |
10629 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10630 | return MATCH_ERROR; |
10631 | } | |
b0e5fa94 | 10632 | |
1be17993 | 10633 | /* Insert it and set attributes. */ |
30b608eb | 10634 | |
9f23af48 MM |
10635 | if (!stree) |
10636 | { | |
10637 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10638 | gcc_assert (stree); | |
10639 | } | |
3e15518b | 10640 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 10641 | |
3e15518b JW |
10642 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10643 | false)) | |
1be17993 | 10644 | return MATCH_ERROR; |
3e15518b | 10645 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
10646 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10647 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 10648 | |
1be17993 JW |
10649 | if (gfc_match_eos () == MATCH_YES) |
10650 | return MATCH_YES; | |
10651 | if (gfc_match_char (',') != MATCH_YES) | |
10652 | goto syntax; | |
e34ccb4c | 10653 | } |
30b608eb | 10654 | |
1be17993 JW |
10655 | syntax: |
10656 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10657 | return MATCH_ERROR; | |
30b608eb DK |
10658 | } |
10659 | ||
10660 | ||
e157f736 DK |
10661 | /* Match a GENERIC procedure binding inside a derived type. */ |
10662 | ||
10663 | match | |
10664 | gfc_match_generic (void) | |
10665 | { | |
10666 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 10667 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
10668 | gfc_symbol* block; |
10669 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10670 | gfc_typebound_proc* tb; | |
e157f736 | 10671 | gfc_namespace* ns; |
94747289 DK |
10672 | interface_type op_type; |
10673 | gfc_intrinsic_op op; | |
e157f736 DK |
10674 | match m; |
10675 | ||
10676 | /* Check current state. */ | |
10677 | if (gfc_current_state () == COMP_DERIVED) | |
10678 | { | |
10679 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10680 | return MATCH_ERROR; | |
10681 | } | |
10682 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10683 | return MATCH_NO; | |
10684 | block = gfc_state_stack->previous->sym; | |
10685 | ns = block->f2k_derived; | |
10686 | gcc_assert (block && ns); | |
10687 | ||
ff5b6492 MM |
10688 | memset (&tbattr, 0, sizeof (tbattr)); |
10689 | tbattr.where = gfc_current_locus; | |
10690 | ||
e157f736 | 10691 | /* See if we get an access-specifier. */ |
713485cc | 10692 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
10693 | if (m == MATCH_ERROR) |
10694 | goto error; | |
10695 | ||
10696 | /* Now the colons, those are required. */ | |
10697 | if (gfc_match (" ::") != MATCH_YES) | |
10698 | { | |
a4d9b221 | 10699 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
10700 | goto error; |
10701 | } | |
10702 | ||
94747289 DK |
10703 | /* Match the binding name; depending on type (operator / generic) format |
10704 | it for future error messages into bind_name. */ | |
f5acf0f2 | 10705 | |
94747289 | 10706 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
10707 | if (m == MATCH_ERROR) |
10708 | return MATCH_ERROR; | |
10709 | if (m == MATCH_NO) | |
10710 | { | |
94747289 | 10711 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
10712 | goto error; |
10713 | } | |
10714 | ||
94747289 | 10715 | switch (op_type) |
e157f736 | 10716 | { |
94747289 | 10717 | case INTERFACE_GENERIC: |
e73d3ca6 | 10718 | case INTERFACE_DTIO: |
94747289 DK |
10719 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10720 | break; | |
f5acf0f2 | 10721 | |
94747289 DK |
10722 | case INTERFACE_USER_OP: |
10723 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10724 | break; | |
f5acf0f2 | 10725 | |
94747289 DK |
10726 | case INTERFACE_INTRINSIC_OP: |
10727 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10728 | gfc_op2string (op)); | |
10729 | break; | |
10730 | ||
377e37c1 SK |
10731 | case INTERFACE_NAMELESS: |
10732 | gfc_error ("Malformed GENERIC statement at %C"); | |
10733 | goto error; | |
10734 | break; | |
10735 | ||
94747289 DK |
10736 | default: |
10737 | gcc_unreachable (); | |
10738 | } | |
e34ccb4c | 10739 | |
94747289 DK |
10740 | /* Match the required =>. */ |
10741 | if (gfc_match (" =>") != MATCH_YES) | |
10742 | { | |
a4d9b221 | 10743 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
10744 | goto error; |
10745 | } | |
f5acf0f2 | 10746 | |
94747289 DK |
10747 | /* Try to find existing GENERIC binding with this name / for this operator; |
10748 | if there is something, check that it is another GENERIC and then extend | |
10749 | it rather than building a new node. Otherwise, create it and put it | |
10750 | at the right position. */ | |
10751 | ||
10752 | switch (op_type) | |
10753 | { | |
e73d3ca6 | 10754 | case INTERFACE_DTIO: |
94747289 DK |
10755 | case INTERFACE_USER_OP: |
10756 | case INTERFACE_GENERIC: | |
10757 | { | |
10758 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10759 | gfc_symtree* st; | |
10760 | ||
10761 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 10762 | tb = st ? st->n.tb : NULL; |
94747289 DK |
10763 | break; |
10764 | } | |
10765 | ||
10766 | case INTERFACE_INTRINSIC_OP: | |
10767 | tb = ns->tb_op[op]; | |
10768 | break; | |
10769 | ||
10770 | default: | |
10771 | gcc_unreachable (); | |
10772 | } | |
10773 | ||
10774 | if (tb) | |
10775 | { | |
e34ccb4c | 10776 | if (!tb->is_generic) |
e157f736 | 10777 | { |
94747289 | 10778 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 10779 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 10780 | " %qs for the derived type %qs at %C", |
94747289 | 10781 | bind_name, block->name); |
e157f736 DK |
10782 | goto error; |
10783 | } | |
10784 | ||
e157f736 DK |
10785 | if (tb->access != tbattr.access) |
10786 | { | |
10787 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 10788 | " defined binding %qs", bind_name); |
e157f736 DK |
10789 | goto error; |
10790 | } | |
10791 | } | |
10792 | else | |
10793 | { | |
3e15518b | 10794 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
10795 | tb->where = gfc_current_locus; |
10796 | tb->access = tbattr.access; | |
10797 | tb->is_generic = 1; | |
10798 | tb->u.generic = NULL; | |
94747289 DK |
10799 | |
10800 | switch (op_type) | |
10801 | { | |
e73d3ca6 | 10802 | case INTERFACE_DTIO: |
94747289 DK |
10803 | case INTERFACE_GENERIC: |
10804 | case INTERFACE_USER_OP: | |
10805 | { | |
10806 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
10807 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10808 | &ns->tb_sym_root, name); | |
94747289 DK |
10809 | gcc_assert (st); |
10810 | st->n.tb = tb; | |
10811 | ||
10812 | break; | |
10813 | } | |
f5acf0f2 | 10814 | |
94747289 DK |
10815 | case INTERFACE_INTRINSIC_OP: |
10816 | ns->tb_op[op] = tb; | |
10817 | break; | |
10818 | ||
10819 | default: | |
10820 | gcc_unreachable (); | |
10821 | } | |
e157f736 DK |
10822 | } |
10823 | ||
10824 | /* Now, match all following names as specific targets. */ | |
10825 | do | |
10826 | { | |
10827 | gfc_symtree* target_st; | |
10828 | gfc_tbp_generic* target; | |
10829 | ||
10830 | m = gfc_match_name (name); | |
10831 | if (m == MATCH_ERROR) | |
10832 | goto error; | |
10833 | if (m == MATCH_NO) | |
10834 | { | |
10835 | gfc_error ("Expected specific binding name at %C"); | |
10836 | goto error; | |
10837 | } | |
10838 | ||
e34ccb4c | 10839 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
10840 | |
10841 | /* See if this is a duplicate specification. */ | |
10842 | for (target = tb->u.generic; target; target = target->next) | |
10843 | if (target_st == target->specific_st) | |
10844 | { | |
c4100eae MLI |
10845 | gfc_error ("%qs already defined as specific binding for the" |
10846 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
10847 | goto error; |
10848 | } | |
10849 | ||
e157f736 DK |
10850 | target = gfc_get_tbp_generic (); |
10851 | target->specific_st = target_st; | |
10852 | target->specific = NULL; | |
10853 | target->next = tb->u.generic; | |
218e1228 TB |
10854 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
10855 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
10856 | tb->u.generic = target; |
10857 | } | |
10858 | while (gfc_match (" ,") == MATCH_YES); | |
10859 | ||
10860 | /* Here should be the end. */ | |
10861 | if (gfc_match_eos () != MATCH_YES) | |
10862 | { | |
10863 | gfc_error ("Junk after GENERIC binding at %C"); | |
10864 | goto error; | |
10865 | } | |
10866 | ||
10867 | return MATCH_YES; | |
10868 | ||
10869 | error: | |
10870 | return MATCH_ERROR; | |
10871 | } | |
10872 | ||
10873 | ||
34523524 DK |
10874 | /* Match a FINAL declaration inside a derived type. */ |
10875 | ||
10876 | match | |
10877 | gfc_match_final_decl (void) | |
10878 | { | |
10879 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10880 | gfc_symbol* sym; | |
10881 | match m; | |
10882 | gfc_namespace* module_ns; | |
10883 | bool first, last; | |
30b608eb | 10884 | gfc_symbol* block; |
34523524 | 10885 | |
33344e0f JW |
10886 | if (gfc_current_form == FORM_FREE) |
10887 | { | |
10888 | char c = gfc_peek_ascii_char (); | |
10889 | if (!gfc_is_whitespace (c) && c != ':') | |
10890 | return MATCH_NO; | |
10891 | } | |
f5acf0f2 | 10892 | |
30b608eb | 10893 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 10894 | { |
33344e0f JW |
10895 | if (gfc_current_form == FORM_FIXED) |
10896 | return MATCH_NO; | |
10897 | ||
34523524 | 10898 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 10899 | "CONTAINS section"); |
34523524 DK |
10900 | return MATCH_ERROR; |
10901 | } | |
10902 | ||
30b608eb DK |
10903 | block = gfc_state_stack->previous->sym; |
10904 | gcc_assert (block); | |
34523524 | 10905 | |
30b608eb DK |
10906 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
10907 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
10908 | { |
10909 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
10910 | " specification part of a MODULE"); | |
10911 | return MATCH_ERROR; | |
10912 | } | |
10913 | ||
10914 | module_ns = gfc_current_ns; | |
10915 | gcc_assert (module_ns); | |
10916 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
10917 | ||
10918 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
10919 | if (gfc_match (" ::") == MATCH_ERROR) | |
10920 | return MATCH_ERROR; | |
10921 | ||
10922 | /* Match the sequence of procedure names. */ | |
10923 | first = true; | |
10924 | last = false; | |
10925 | do | |
10926 | { | |
10927 | gfc_finalizer* f; | |
10928 | ||
10929 | if (first && gfc_match_eos () == MATCH_YES) | |
10930 | { | |
10931 | gfc_error ("Empty FINAL at %C"); | |
10932 | return MATCH_ERROR; | |
10933 | } | |
10934 | ||
10935 | m = gfc_match_name (name); | |
10936 | if (m == MATCH_NO) | |
10937 | { | |
10938 | gfc_error ("Expected module procedure name at %C"); | |
10939 | return MATCH_ERROR; | |
10940 | } | |
10941 | else if (m != MATCH_YES) | |
10942 | return MATCH_ERROR; | |
10943 | ||
10944 | if (gfc_match_eos () == MATCH_YES) | |
10945 | last = true; | |
10946 | if (!last && gfc_match_char (',') != MATCH_YES) | |
10947 | { | |
a4d9b221 | 10948 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
10949 | return MATCH_ERROR; |
10950 | } | |
10951 | ||
10952 | if (gfc_get_symbol (name, module_ns, &sym)) | |
10953 | { | |
c4100eae | 10954 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
10955 | return MATCH_ERROR; |
10956 | } | |
10957 | ||
10958 | /* Mark the symbol as module procedure. */ | |
10959 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 10960 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
10961 | return MATCH_ERROR; |
10962 | ||
10963 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 10964 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 10965 | if (f->proc_sym == sym) |
34523524 | 10966 | { |
546c8974 | 10967 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
10968 | name); |
10969 | return MATCH_ERROR; | |
10970 | } | |
10971 | ||
10972 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 10973 | gcc_assert (block->f2k_derived); |
2050626a | 10974 | sym->refs++; |
ece3f663 | 10975 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
10976 | f->proc_sym = sym; |
10977 | f->proc_tree = NULL; | |
34523524 | 10978 | f->where = gfc_current_locus; |
30b608eb DK |
10979 | f->next = block->f2k_derived->finalizers; |
10980 | block->f2k_derived->finalizers = f; | |
34523524 DK |
10981 | |
10982 | first = false; | |
10983 | } | |
10984 | while (!last); | |
10985 | ||
10986 | return MATCH_YES; | |
10987 | } | |
08a6b8e0 TB |
10988 | |
10989 | ||
10990 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
10991 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
10992 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
10993 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
10994 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
10995 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
10996 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
10997 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
10998 | }; |
10999 | ||
11000 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11001 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11002 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11003 | ||
11004 | TODO: We should support all GCC attributes using the same syntax for | |
11005 | the attribute list, i.e. the list in C | |
11006 | __attributes(( attribute-list )) | |
11007 | matches then | |
11008 | !GCC$ ATTRIBUTES attribute-list :: | |
11009 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11010 | saved into a TREE. | |
11011 | ||
11012 | As there is absolutely no risk of confusion, we should never return | |
11013 | MATCH_NO. */ | |
11014 | match | |
11015 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 11016 | { |
08a6b8e0 TB |
11017 | symbol_attribute attr; |
11018 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11019 | unsigned id; | |
11020 | gfc_symbol *sym; | |
11021 | match m; | |
11022 | ||
11023 | gfc_clear_attr (&attr); | |
11024 | for(;;) | |
11025 | { | |
11026 | char ch; | |
11027 | ||
11028 | if (gfc_match_name (name) != MATCH_YES) | |
11029 | return MATCH_ERROR; | |
11030 | ||
11031 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11032 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11033 | break; | |
11034 | ||
11035 | if (id == EXT_ATTR_LAST) | |
11036 | { | |
11037 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11038 | return MATCH_ERROR; | |
11039 | } | |
11040 | ||
524af0d6 | 11041 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11042 | return MATCH_ERROR; |
11043 | ||
11044 | gfc_gobble_whitespace (); | |
11045 | ch = gfc_next_ascii_char (); | |
11046 | if (ch == ':') | |
11047 | { | |
11048 | /* This is the successful exit condition for the loop. */ | |
11049 | if (gfc_next_ascii_char () == ':') | |
11050 | break; | |
11051 | } | |
11052 | ||
11053 | if (ch == ',') | |
11054 | continue; | |
11055 | ||
11056 | goto syntax; | |
11057 | } | |
11058 | ||
11059 | if (gfc_match_eos () == MATCH_YES) | |
11060 | goto syntax; | |
11061 | ||
11062 | for(;;) | |
11063 | { | |
11064 | m = gfc_match_name (name); | |
11065 | if (m != MATCH_YES) | |
11066 | return m; | |
11067 | ||
11068 | if (find_special (name, &sym, true)) | |
11069 | return MATCH_ERROR; | |
f5acf0f2 | 11070 | |
08a6b8e0 TB |
11071 | sym->attr.ext_attr |= attr.ext_attr; |
11072 | ||
11073 | if (gfc_match_eos () == MATCH_YES) | |
11074 | break; | |
11075 | ||
11076 | if (gfc_match_char (',') != MATCH_YES) | |
11077 | goto syntax; | |
11078 | } | |
11079 | ||
11080 | return MATCH_YES; | |
11081 | ||
11082 | syntax: | |
11083 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11084 | return MATCH_ERROR; | |
11085 | } | |
170a8bd6 EB |
11086 | |
11087 | ||
11088 | /* Match a !GCC$ UNROLL statement of the form: | |
11089 | !GCC$ UNROLL n | |
11090 | ||
11091 | The parameter n is the number of times we are supposed to unroll. | |
11092 | ||
11093 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11094 | match | |
11095 | gfc_match_gcc_unroll (void) | |
11096 | { | |
11097 | int value; | |
11098 | ||
11099 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11100 | { | |
11101 | if (value < 0 || value > USHRT_MAX) | |
11102 | { | |
11103 | gfc_error ("%<GCC unroll%> directive requires a" | |
11104 | " non-negative integral constant" | |
11105 | " less than or equal to %u at %C", | |
11106 | USHRT_MAX | |
11107 | ); | |
11108 | return MATCH_ERROR; | |
11109 | } | |
11110 | if (gfc_match_eos () == MATCH_YES) | |
11111 | { | |
11112 | directive_unroll = value == 0 ? 1 : value; | |
11113 | return MATCH_YES; | |
11114 | } | |
11115 | } | |
11116 | ||
11117 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11118 | return MATCH_ERROR; | |
11119 | } |