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6de9cd9a | 1 | /* Declaration statement matcher |
cbe34bb5 | 2 | Copyright (C) 2002-2017 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 | |
5bab4c96 PT |
98 | /* If a kind expression of a component of a parameterized derived type is |
99 | parameterized, temporarily store the expression here. */ | |
100 | static gfc_expr *saved_kind_expr = NULL; | |
101 | ||
102 | /* Used to store the parameter list arising in a PDT declaration and | |
103 | in the typespec of a PDT variable or component. */ | |
104 | static gfc_actual_arglist *decl_type_param_list; | |
105 | static gfc_actual_arglist *type_param_spec_list; | |
106 | ||
6de9cd9a | 107 | |
294fbfc8 TS |
108 | /********************* DATA statement subroutines *********************/ |
109 | ||
2220652d PT |
110 | static bool in_match_data = false; |
111 | ||
112 | bool | |
113 | gfc_in_match_data (void) | |
114 | { | |
115 | return in_match_data; | |
116 | } | |
117 | ||
ca39e6f2 FXC |
118 | static void |
119 | set_in_match_data (bool set_value) | |
2220652d PT |
120 | { |
121 | in_match_data = set_value; | |
122 | } | |
123 | ||
294fbfc8 TS |
124 | /* Free a gfc_data_variable structure and everything beneath it. */ |
125 | ||
126 | static void | |
636dff67 | 127 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
128 | { |
129 | gfc_data_variable *q; | |
130 | ||
131 | for (; p; p = q) | |
132 | { | |
133 | q = p->next; | |
134 | gfc_free_expr (p->expr); | |
135 | gfc_free_iterator (&p->iter, 0); | |
136 | free_variable (p->list); | |
cede9502 | 137 | free (p); |
294fbfc8 TS |
138 | } |
139 | } | |
140 | ||
141 | ||
142 | /* Free a gfc_data_value structure and everything beneath it. */ | |
143 | ||
144 | static void | |
636dff67 | 145 | free_value (gfc_data_value *p) |
294fbfc8 TS |
146 | { |
147 | gfc_data_value *q; | |
148 | ||
149 | for (; p; p = q) | |
150 | { | |
151 | q = p->next; | |
c9d75a48 | 152 | mpz_clear (p->repeat); |
294fbfc8 | 153 | gfc_free_expr (p->expr); |
cede9502 | 154 | free (p); |
294fbfc8 TS |
155 | } |
156 | } | |
157 | ||
158 | ||
159 | /* Free a list of gfc_data structures. */ | |
160 | ||
161 | void | |
636dff67 | 162 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
163 | { |
164 | gfc_data *q; | |
165 | ||
166 | for (; p; p = q) | |
167 | { | |
168 | q = p->next; | |
294fbfc8 TS |
169 | free_variable (p->var); |
170 | free_value (p->value); | |
cede9502 | 171 | free (p); |
294fbfc8 TS |
172 | } |
173 | } | |
174 | ||
175 | ||
a9f6f1f2 | 176 | /* Free all data in a namespace. */ |
636dff67 | 177 | |
a9f6f1f2 | 178 | static void |
66e4ab31 | 179 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
180 | { |
181 | gfc_data *d; | |
182 | ||
183 | for (;ns->data;) | |
184 | { | |
185 | d = ns->data->next; | |
cede9502 | 186 | free (ns->data); |
a9f6f1f2 JD |
187 | ns->data = d; |
188 | } | |
189 | } | |
190 | ||
d5e2274d SB |
191 | /* Reject data parsed since the last restore point was marked. */ |
192 | ||
193 | void | |
194 | gfc_reject_data (gfc_namespace *ns) | |
195 | { | |
196 | gfc_data *d; | |
197 | ||
198 | while (ns->data && ns->data != ns->old_data) | |
199 | { | |
200 | d = ns->data->next; | |
201 | free (ns->data); | |
202 | ns->data = d; | |
203 | } | |
204 | } | |
a9f6f1f2 | 205 | |
294fbfc8 TS |
206 | static match var_element (gfc_data_variable *); |
207 | ||
208 | /* Match a list of variables terminated by an iterator and a right | |
209 | parenthesis. */ | |
210 | ||
211 | static match | |
636dff67 | 212 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
213 | { |
214 | gfc_data_variable *tail, var; | |
215 | match m; | |
216 | ||
217 | m = var_element (&var); | |
218 | if (m == MATCH_ERROR) | |
219 | return MATCH_ERROR; | |
220 | if (m == MATCH_NO) | |
221 | goto syntax; | |
222 | ||
223 | tail = gfc_get_data_variable (); | |
224 | *tail = var; | |
225 | ||
226 | parent->list = tail; | |
227 | ||
228 | for (;;) | |
229 | { | |
230 | if (gfc_match_char (',') != MATCH_YES) | |
231 | goto syntax; | |
232 | ||
233 | m = gfc_match_iterator (&parent->iter, 1); | |
234 | if (m == MATCH_YES) | |
235 | break; | |
236 | if (m == MATCH_ERROR) | |
237 | return MATCH_ERROR; | |
238 | ||
239 | m = var_element (&var); | |
240 | if (m == MATCH_ERROR) | |
241 | return MATCH_ERROR; | |
242 | if (m == MATCH_NO) | |
243 | goto syntax; | |
244 | ||
245 | tail->next = gfc_get_data_variable (); | |
246 | tail = tail->next; | |
247 | ||
248 | *tail = var; | |
249 | } | |
250 | ||
251 | if (gfc_match_char (')') != MATCH_YES) | |
252 | goto syntax; | |
253 | return MATCH_YES; | |
254 | ||
255 | syntax: | |
256 | gfc_syntax_error (ST_DATA); | |
257 | return MATCH_ERROR; | |
258 | } | |
259 | ||
260 | ||
261 | /* Match a single element in a data variable list, which can be a | |
262 | variable-iterator list. */ | |
263 | ||
264 | static match | |
7b901ac4 | 265 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
266 | { |
267 | match m; | |
268 | gfc_symbol *sym; | |
269 | ||
7b901ac4 | 270 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
271 | |
272 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 273 | return var_list (new_var); |
294fbfc8 | 274 | |
7b901ac4 | 275 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
276 | if (m != MATCH_YES) |
277 | return m; | |
278 | ||
7b901ac4 | 279 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 280 | |
f37e928c | 281 | /* Symbol should already have an associated type. */ |
524af0d6 | 282 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
283 | return MATCH_ERROR; |
284 | ||
636dff67 SK |
285 | if (!sym->attr.function && gfc_current_ns->parent |
286 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 287 | { |
c4100eae | 288 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 289 | "statement at %C", sym->name); |
294fbfc8 TS |
290 | return MATCH_ERROR; |
291 | } | |
292 | ||
4075a94e | 293 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 294 | && sym->attr.in_common |
524af0d6 | 295 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 296 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 297 | sym->name)) |
4075a94e | 298 | return MATCH_ERROR; |
294fbfc8 | 299 | |
524af0d6 | 300 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
301 | return MATCH_ERROR; |
302 | ||
303 | return MATCH_YES; | |
304 | } | |
305 | ||
306 | ||
307 | /* Match the top-level list of data variables. */ | |
308 | ||
309 | static match | |
636dff67 | 310 | top_var_list (gfc_data *d) |
294fbfc8 | 311 | { |
7b901ac4 | 312 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
313 | match m; |
314 | ||
315 | tail = NULL; | |
316 | ||
317 | for (;;) | |
318 | { | |
319 | m = var_element (&var); | |
320 | if (m == MATCH_NO) | |
321 | goto syntax; | |
322 | if (m == MATCH_ERROR) | |
323 | return MATCH_ERROR; | |
324 | ||
7b901ac4 KG |
325 | new_var = gfc_get_data_variable (); |
326 | *new_var = var; | |
294fbfc8 TS |
327 | |
328 | if (tail == NULL) | |
7b901ac4 | 329 | d->var = new_var; |
294fbfc8 | 330 | else |
7b901ac4 | 331 | tail->next = new_var; |
294fbfc8 | 332 | |
7b901ac4 | 333 | tail = new_var; |
294fbfc8 TS |
334 | |
335 | if (gfc_match_char ('/') == MATCH_YES) | |
336 | break; | |
337 | if (gfc_match_char (',') != MATCH_YES) | |
338 | goto syntax; | |
339 | } | |
340 | ||
341 | return MATCH_YES; | |
342 | ||
343 | syntax: | |
344 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 345 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
346 | return MATCH_ERROR; |
347 | } | |
348 | ||
349 | ||
350 | static match | |
636dff67 | 351 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
352 | { |
353 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 354 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
355 | gfc_expr *expr; |
356 | match m; | |
36d3fb4c | 357 | locus old_loc; |
294fbfc8 TS |
358 | |
359 | m = gfc_match_literal_constant (&expr, 1); | |
360 | if (m == MATCH_YES) | |
361 | { | |
362 | *result = expr; | |
363 | return MATCH_YES; | |
364 | } | |
365 | ||
366 | if (m == MATCH_ERROR) | |
367 | return MATCH_ERROR; | |
368 | ||
369 | m = gfc_match_null (result); | |
370 | if (m != MATCH_NO) | |
371 | return m; | |
372 | ||
36d3fb4c PT |
373 | old_loc = gfc_current_locus; |
374 | ||
375 | /* Should this be a structure component, try to match it | |
376 | before matching a name. */ | |
377 | m = gfc_match_rvalue (result); | |
378 | if (m == MATCH_ERROR) | |
379 | return m; | |
380 | ||
381 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
382 | { | |
524af0d6 | 383 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
384 | m = MATCH_ERROR; |
385 | return m; | |
386 | } | |
46f4f794 TB |
387 | else if (m == MATCH_YES) |
388 | gfc_free_expr (*result); | |
36d3fb4c PT |
389 | |
390 | gfc_current_locus = old_loc; | |
391 | ||
294fbfc8 TS |
392 | m = gfc_match_name (name); |
393 | if (m != MATCH_YES) | |
394 | return m; | |
395 | ||
396 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
397 | return MATCH_ERROR; | |
398 | ||
c3f34952 TB |
399 | if (sym && sym->attr.generic) |
400 | dt_sym = gfc_find_dt_in_generic (sym); | |
401 | ||
294fbfc8 | 402 | if (sym == NULL |
c3f34952 | 403 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 404 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 405 | { |
c4100eae | 406 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 407 | name); |
89f1f37e | 408 | *result = NULL; |
294fbfc8 TS |
409 | return MATCH_ERROR; |
410 | } | |
f6288c24 | 411 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 412 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 413 | |
d46e0870 JD |
414 | /* Check to see if the value is an initialization array expression. */ |
415 | if (sym->value->expr_type == EXPR_ARRAY) | |
416 | { | |
417 | gfc_current_locus = old_loc; | |
418 | ||
419 | m = gfc_match_init_expr (result); | |
420 | if (m == MATCH_ERROR) | |
421 | return m; | |
422 | ||
423 | if (m == MATCH_YES) | |
424 | { | |
524af0d6 | 425 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
426 | m = MATCH_ERROR; |
427 | ||
428 | if ((*result)->expr_type == EXPR_CONSTANT) | |
429 | return m; | |
430 | else | |
431 | { | |
432 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
433 | return MATCH_ERROR; | |
434 | } | |
435 | } | |
436 | } | |
437 | ||
294fbfc8 TS |
438 | *result = gfc_copy_expr (sym->value); |
439 | return MATCH_YES; | |
440 | } | |
441 | ||
442 | ||
443 | /* Match a list of values in a DATA statement. The leading '/' has | |
444 | already been seen at this point. */ | |
445 | ||
446 | static match | |
636dff67 | 447 | top_val_list (gfc_data *data) |
294fbfc8 | 448 | { |
7b901ac4 | 449 | gfc_data_value *new_val, *tail; |
294fbfc8 | 450 | gfc_expr *expr; |
294fbfc8 TS |
451 | match m; |
452 | ||
453 | tail = NULL; | |
454 | ||
455 | for (;;) | |
456 | { | |
457 | m = match_data_constant (&expr); | |
458 | if (m == MATCH_NO) | |
459 | goto syntax; | |
460 | if (m == MATCH_ERROR) | |
461 | return MATCH_ERROR; | |
462 | ||
7b901ac4 KG |
463 | new_val = gfc_get_data_value (); |
464 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
465 | |
466 | if (tail == NULL) | |
7b901ac4 | 467 | data->value = new_val; |
294fbfc8 | 468 | else |
7b901ac4 | 469 | tail->next = new_val; |
294fbfc8 | 470 | |
7b901ac4 | 471 | tail = new_val; |
294fbfc8 TS |
472 | |
473 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
474 | { | |
475 | tail->expr = expr; | |
f2112868 | 476 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
477 | } |
478 | else | |
479 | { | |
46f4f794 | 480 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 481 | gfc_free_expr (expr); |
294fbfc8 TS |
482 | |
483 | m = match_data_constant (&tail->expr); | |
484 | if (m == MATCH_NO) | |
485 | goto syntax; | |
486 | if (m == MATCH_ERROR) | |
487 | return MATCH_ERROR; | |
488 | } | |
489 | ||
490 | if (gfc_match_char ('/') == MATCH_YES) | |
491 | break; | |
492 | if (gfc_match_char (',') == MATCH_NO) | |
493 | goto syntax; | |
494 | } | |
495 | ||
496 | return MATCH_YES; | |
497 | ||
498 | syntax: | |
499 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 500 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
501 | return MATCH_ERROR; |
502 | } | |
503 | ||
504 | ||
505 | /* Matches an old style initialization. */ | |
506 | ||
507 | static match | |
508 | match_old_style_init (const char *name) | |
509 | { | |
510 | match m; | |
511 | gfc_symtree *st; | |
ed0e3607 | 512 | gfc_symbol *sym; |
294fbfc8 TS |
513 | gfc_data *newdata; |
514 | ||
515 | /* Set up data structure to hold initializers. */ | |
516 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
517 | sym = st->n.sym; |
518 | ||
294fbfc8 TS |
519 | newdata = gfc_get_data (); |
520 | newdata->var = gfc_get_data_variable (); | |
521 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 522 | newdata->where = gfc_current_locus; |
294fbfc8 | 523 | |
66e4ab31 | 524 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
525 | m = top_val_list (newdata); |
526 | if (m != MATCH_YES) | |
527 | { | |
cede9502 | 528 | free (newdata); |
294fbfc8 TS |
529 | return m; |
530 | } | |
531 | ||
532 | if (gfc_pure (NULL)) | |
533 | { | |
534 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 535 | free (newdata); |
294fbfc8 TS |
536 | return MATCH_ERROR; |
537 | } | |
ccd7751b | 538 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 539 | |
ed0e3607 | 540 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 541 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 542 | { |
cede9502 | 543 | free (newdata); |
ed0e3607 AL |
544 | return MATCH_ERROR; |
545 | } | |
546 | ||
294fbfc8 TS |
547 | /* Chain in namespace list of DATA initializers. */ |
548 | newdata->next = gfc_current_ns->data; | |
549 | gfc_current_ns->data = newdata; | |
550 | ||
551 | return m; | |
552 | } | |
553 | ||
636dff67 | 554 | |
294fbfc8 | 555 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 556 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 557 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 558 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
559 | |
560 | match | |
561 | gfc_match_data (void) | |
562 | { | |
7b901ac4 | 563 | gfc_data *new_data; |
294fbfc8 TS |
564 | match m; |
565 | ||
5f0ba745 SK |
566 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
567 | if ((gfc_current_state () == COMP_FUNCTION | |
568 | || gfc_current_state () == COMP_SUBROUTINE) | |
569 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
570 | { | |
571 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
572 | return MATCH_ERROR; | |
573 | } | |
574 | ||
ca39e6f2 | 575 | set_in_match_data (true); |
2220652d | 576 | |
294fbfc8 TS |
577 | for (;;) |
578 | { | |
7b901ac4 KG |
579 | new_data = gfc_get_data (); |
580 | new_data->where = gfc_current_locus; | |
294fbfc8 | 581 | |
7b901ac4 | 582 | m = top_var_list (new_data); |
294fbfc8 TS |
583 | if (m != MATCH_YES) |
584 | goto cleanup; | |
585 | ||
7b901ac4 | 586 | m = top_val_list (new_data); |
294fbfc8 TS |
587 | if (m != MATCH_YES) |
588 | goto cleanup; | |
589 | ||
7b901ac4 KG |
590 | new_data->next = gfc_current_ns->data; |
591 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
592 | |
593 | if (gfc_match_eos () == MATCH_YES) | |
594 | break; | |
595 | ||
596 | gfc_match_char (','); /* Optional comma */ | |
597 | } | |
598 | ||
ca39e6f2 | 599 | set_in_match_data (false); |
2220652d | 600 | |
294fbfc8 TS |
601 | if (gfc_pure (NULL)) |
602 | { | |
603 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
604 | return MATCH_ERROR; | |
605 | } | |
ccd7751b | 606 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 607 | |
294fbfc8 TS |
608 | return MATCH_YES; |
609 | ||
610 | cleanup: | |
ca39e6f2 | 611 | set_in_match_data (false); |
7b901ac4 | 612 | gfc_free_data (new_data); |
294fbfc8 TS |
613 | return MATCH_ERROR; |
614 | } | |
615 | ||
616 | ||
617 | /************************ Declaration statements *********************/ | |
618 | ||
d3a9eea2 | 619 | |
f6288c24 FR |
620 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
621 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 622 | and is surrounded by '/'. |
f6288c24 FR |
623 | The typespec ts must match the typespec of the variable which the |
624 | clist is initializing. | |
6442a6f4 | 625 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
626 | corresponding to array elements or a scalar (as == NULL). */ |
627 | ||
628 | static match | |
629 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
630 | { | |
631 | gfc_constructor_base array_head = NULL; | |
632 | gfc_expr *expr = NULL; | |
633 | match m; | |
634 | locus where; | |
635 | mpz_t repeat, size; | |
636 | bool scalar; | |
637 | int cmp; | |
638 | ||
639 | gcc_assert (ts); | |
640 | ||
641 | mpz_init_set_ui (repeat, 0); | |
642 | mpz_init (size); | |
643 | scalar = !as || !as->rank; | |
644 | ||
645 | /* We have already matched '/' - now look for a constant list, as with | |
646 | top_val_list from decl.c, but append the result to an array. */ | |
647 | if (gfc_match ("/") == MATCH_YES) | |
648 | { | |
649 | gfc_error ("Empty old style initializer list at %C"); | |
650 | goto cleanup; | |
651 | } | |
652 | ||
653 | where = gfc_current_locus; | |
654 | for (;;) | |
655 | { | |
656 | m = match_data_constant (&expr); | |
657 | if (m != MATCH_YES) | |
658 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
659 | if (m == MATCH_NO) | |
660 | goto syntax; | |
661 | if (m == MATCH_ERROR) | |
662 | goto cleanup; | |
663 | ||
664 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
665 | if ( gfc_match_char ('*') == MATCH_YES) | |
666 | { | |
667 | if (scalar) | |
668 | { | |
669 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
670 | goto cleanup; | |
671 | } | |
672 | if (expr->ts.type != BT_INTEGER) | |
673 | { | |
674 | gfc_error ("Repeat spec must be an integer at %C"); | |
675 | goto cleanup; | |
676 | } | |
677 | mpz_set (repeat, expr->value.integer); | |
678 | gfc_free_expr (expr); | |
679 | expr = NULL; | |
680 | ||
681 | m = match_data_constant (&expr); | |
682 | if (m == MATCH_NO) | |
683 | gfc_error ("Expected data constant after repeat spec at %C"); | |
684 | if (m != MATCH_YES) | |
685 | goto cleanup; | |
686 | } | |
687 | /* No repeat spec, we matched the data constant itself. */ | |
688 | else | |
689 | mpz_set_ui (repeat, 1); | |
690 | ||
691 | if (!scalar) | |
692 | { | |
693 | /* Add the constant initializer as many times as repeated. */ | |
694 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
695 | { | |
696 | /* Make sure types of elements match */ | |
697 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
698 | && !gfc_convert_type (expr, ts, 1)) | |
699 | goto cleanup; | |
700 | ||
701 | gfc_constructor_append_expr (&array_head, | |
702 | gfc_copy_expr (expr), &gfc_current_locus); | |
703 | } | |
704 | ||
705 | gfc_free_expr (expr); | |
706 | expr = NULL; | |
707 | } | |
708 | ||
709 | /* For scalar initializers quit after one element. */ | |
710 | else | |
711 | { | |
712 | if(gfc_match_char ('/') != MATCH_YES) | |
713 | { | |
714 | gfc_error ("End of scalar initializer expected at %C"); | |
715 | goto cleanup; | |
716 | } | |
717 | break; | |
718 | } | |
719 | ||
720 | if (gfc_match_char ('/') == MATCH_YES) | |
721 | break; | |
722 | if (gfc_match_char (',') == MATCH_NO) | |
723 | goto syntax; | |
724 | } | |
725 | ||
726 | /* Set up expr as an array constructor. */ | |
727 | if (!scalar) | |
728 | { | |
729 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
730 | expr->ts = *ts; | |
731 | expr->value.constructor = array_head; | |
732 | ||
733 | expr->rank = as->rank; | |
734 | expr->shape = gfc_get_shape (expr->rank); | |
735 | ||
736 | /* Validate sizes. */ | |
737 | gcc_assert (gfc_array_size (expr, &size)); | |
738 | gcc_assert (spec_size (as, &repeat)); | |
739 | cmp = mpz_cmp (size, repeat); | |
740 | if (cmp < 0) | |
741 | gfc_error ("Not enough elements in array initializer at %C"); | |
742 | else if (cmp > 0) | |
743 | gfc_error ("Too many elements in array initializer at %C"); | |
744 | if (cmp) | |
745 | goto cleanup; | |
746 | } | |
747 | ||
748 | /* Make sure scalar types match. */ | |
749 | else if (!gfc_compare_types (&expr->ts, ts) | |
750 | && !gfc_convert_type (expr, ts, 1)) | |
751 | goto cleanup; | |
752 | ||
753 | if (expr->ts.u.cl) | |
754 | expr->ts.u.cl->length_from_typespec = 1; | |
755 | ||
756 | *result = expr; | |
757 | mpz_clear (size); | |
758 | mpz_clear (repeat); | |
759 | return MATCH_YES; | |
760 | ||
761 | syntax: | |
762 | gfc_error ("Syntax error in old style initializer list at %C"); | |
763 | ||
764 | cleanup: | |
765 | if (expr) | |
766 | expr->value.constructor = NULL; | |
767 | gfc_free_expr (expr); | |
768 | gfc_constructor_free (array_head); | |
769 | mpz_clear (size); | |
770 | mpz_clear (repeat); | |
771 | return MATCH_ERROR; | |
772 | } | |
773 | ||
774 | ||
eea58adb | 775 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 776 | |
524af0d6 | 777 | static bool |
d3a9eea2 TB |
778 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
779 | { | |
780 | int i; | |
781 | ||
63fbf586 TB |
782 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
783 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
784 | { | |
785 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 786 | return false; |
63fbf586 | 787 | } |
c62c6622 | 788 | |
d3a9eea2 TB |
789 | if (to->rank == 0 && from->rank > 0) |
790 | { | |
791 | to->rank = from->rank; | |
792 | to->type = from->type; | |
793 | to->cray_pointee = from->cray_pointee; | |
794 | to->cp_was_assumed = from->cp_was_assumed; | |
795 | ||
796 | for (i = 0; i < to->corank; i++) | |
797 | { | |
798 | to->lower[from->rank + i] = to->lower[i]; | |
799 | to->upper[from->rank + i] = to->upper[i]; | |
800 | } | |
801 | for (i = 0; i < from->rank; i++) | |
802 | { | |
803 | if (copy) | |
804 | { | |
805 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
806 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
807 | } | |
808 | else | |
809 | { | |
810 | to->lower[i] = from->lower[i]; | |
811 | to->upper[i] = from->upper[i]; | |
812 | } | |
813 | } | |
814 | } | |
815 | else if (to->corank == 0 && from->corank > 0) | |
816 | { | |
817 | to->corank = from->corank; | |
818 | to->cotype = from->cotype; | |
819 | ||
820 | for (i = 0; i < from->corank; i++) | |
821 | { | |
822 | if (copy) | |
823 | { | |
824 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
825 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
826 | } | |
827 | else | |
828 | { | |
829 | to->lower[to->rank + i] = from->lower[i]; | |
830 | to->upper[to->rank + i] = from->upper[i]; | |
831 | } | |
832 | } | |
833 | } | |
63fbf586 | 834 | |
524af0d6 | 835 | return true; |
d3a9eea2 TB |
836 | } |
837 | ||
838 | ||
6de9cd9a DN |
839 | /* Match an intent specification. Since this can only happen after an |
840 | INTENT word, a legal intent-spec must follow. */ | |
841 | ||
842 | static sym_intent | |
843 | match_intent_spec (void) | |
844 | { | |
845 | ||
846 | if (gfc_match (" ( in out )") == MATCH_YES) | |
847 | return INTENT_INOUT; | |
848 | if (gfc_match (" ( in )") == MATCH_YES) | |
849 | return INTENT_IN; | |
850 | if (gfc_match (" ( out )") == MATCH_YES) | |
851 | return INTENT_OUT; | |
852 | ||
853 | gfc_error ("Bad INTENT specification at %C"); | |
854 | return INTENT_UNKNOWN; | |
855 | } | |
856 | ||
857 | ||
858 | /* Matches a character length specification, which is either a | |
e69afb29 | 859 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
860 | |
861 | static match | |
e69afb29 | 862 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 863 | { |
cba28dad JD |
864 | match m; |
865 | ||
e69afb29 SK |
866 | *expr = NULL; |
867 | *deferred = false; | |
868 | ||
6de9cd9a | 869 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
870 | return MATCH_YES; |
871 | ||
872 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 873 | { |
98a819ea | 874 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
875 | return MATCH_ERROR; |
876 | ||
877 | *deferred = true; | |
878 | ||
6de9cd9a DN |
879 | return MATCH_YES; |
880 | } | |
881 | ||
cba28dad | 882 | m = gfc_match_expr (expr); |
f37e928c | 883 | |
98a819ea SK |
884 | if (m == MATCH_NO || m == MATCH_ERROR) |
885 | return m; | |
886 | ||
887 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
888 | return MATCH_ERROR; |
889 | ||
98a819ea | 890 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 891 | { |
8d48826b SK |
892 | if ((*expr)->ts.type == BT_INTEGER |
893 | || ((*expr)->ts.type == BT_UNKNOWN | |
894 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
895 | return MATCH_YES; | |
896 | ||
897 | goto syntax; | |
898 | } | |
899 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
900 | { | |
901 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
902 | processor dependent and its value is greater than or equal to zero. | |
903 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
904 | to a negative value, the length of character entities declared | |
905 | is zero. */ | |
906 | ||
907 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 908 | { |
8d48826b SK |
909 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
910 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 911 | } |
8d48826b SK |
912 | else |
913 | goto syntax; | |
cba28dad | 914 | } |
8d48826b SK |
915 | else if ((*expr)->expr_type == EXPR_ARRAY) |
916 | goto syntax; | |
917 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
918 | { | |
fb42421e | 919 | bool t; |
8d48826b SK |
920 | gfc_expr *e; |
921 | ||
922 | e = gfc_copy_expr (*expr); | |
923 | ||
924 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
925 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
926 | if (e->ref && e->ref->type == REF_ARRAY |
927 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
928 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
929 | goto syntax; | |
930 | ||
fb42421e SK |
931 | t = gfc_reduce_init_expr (e); |
932 | ||
8d987deb SK |
933 | if (!t && e->ts.type == BT_UNKNOWN |
934 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
935 | && (flag_implicit_none |
936 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 937 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
938 | { |
939 | gfc_free_expr (e); | |
940 | goto syntax; | |
941 | } | |
98a819ea | 942 | |
54b96a2d | 943 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 944 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
945 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
946 | { | |
947 | gfc_free_expr (e); | |
948 | goto syntax; | |
949 | } | |
950 | ||
951 | gfc_free_expr (e); | |
952 | } | |
98a819ea | 953 | |
cba28dad JD |
954 | return m; |
955 | ||
956 | syntax: | |
8d48826b | 957 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 958 | return MATCH_ERROR; |
6de9cd9a DN |
959 | } |
960 | ||
961 | ||
962 | /* A character length is a '*' followed by a literal integer or a | |
963 | char_len_param_value in parenthesis. */ | |
964 | ||
965 | static match | |
62732c30 | 966 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 967 | { |
5cf54585 | 968 | int length; |
6de9cd9a DN |
969 | match m; |
970 | ||
f5acf0f2 | 971 | *deferred = false; |
6de9cd9a DN |
972 | m = gfc_match_char ('*'); |
973 | if (m != MATCH_YES) | |
974 | return m; | |
975 | ||
5cf54585 | 976 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
977 | if (m == MATCH_ERROR) |
978 | return m; | |
979 | ||
980 | if (m == MATCH_YES) | |
981 | { | |
62732c30 | 982 | if (obsolescent_check |
524af0d6 | 983 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 984 | return MATCH_ERROR; |
b7e75771 | 985 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
986 | return m; |
987 | } | |
988 | ||
989 | if (gfc_match_char ('(') == MATCH_NO) | |
990 | goto syntax; | |
991 | ||
e69afb29 | 992 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
993 | if (m != MATCH_YES && gfc_matching_function) |
994 | { | |
995 | gfc_undo_symbols (); | |
996 | m = MATCH_YES; | |
997 | } | |
998 | ||
6de9cd9a DN |
999 | if (m == MATCH_ERROR) |
1000 | return m; | |
1001 | if (m == MATCH_NO) | |
1002 | goto syntax; | |
1003 | ||
1004 | if (gfc_match_char (')') == MATCH_NO) | |
1005 | { | |
1006 | gfc_free_expr (*expr); | |
1007 | *expr = NULL; | |
1008 | goto syntax; | |
1009 | } | |
1010 | ||
1011 | return MATCH_YES; | |
1012 | ||
1013 | syntax: | |
1014 | gfc_error ("Syntax error in character length specification at %C"); | |
1015 | return MATCH_ERROR; | |
1016 | } | |
1017 | ||
1018 | ||
9e35b386 EE |
1019 | /* Special subroutine for finding a symbol. Check if the name is found |
1020 | in the current name space. If not, and we're compiling a function or | |
1021 | subroutine and the parent compilation unit is an interface, then check | |
1022 | to see if the name we've been given is the name of the interface | |
1023 | (located in another namespace). */ | |
6de9cd9a DN |
1024 | |
1025 | static int | |
08a6b8e0 | 1026 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1027 | { |
1028 | gfc_state_data *s; | |
08a6b8e0 | 1029 | gfc_symtree *st; |
9e35b386 | 1030 | int i; |
6de9cd9a | 1031 | |
08a6b8e0 | 1032 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1033 | if (i == 0) |
08a6b8e0 TB |
1034 | { |
1035 | *result = st ? st->n.sym : NULL; | |
1036 | goto end; | |
1037 | } | |
d51347f9 | 1038 | |
6de9cd9a DN |
1039 | if (gfc_current_state () != COMP_SUBROUTINE |
1040 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1041 | goto end; |
6de9cd9a DN |
1042 | |
1043 | s = gfc_state_stack->previous; | |
1044 | if (s == NULL) | |
9e35b386 | 1045 | goto end; |
6de9cd9a DN |
1046 | |
1047 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1048 | goto end; |
6de9cd9a | 1049 | if (s->sym == NULL) |
66e4ab31 | 1050 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1051 | |
1052 | if (strcmp (name, s->sym->name) == 0) | |
1053 | { | |
1054 | *result = s->sym; | |
1055 | return 0; | |
1056 | } | |
1057 | ||
9e35b386 EE |
1058 | end: |
1059 | return i; | |
6de9cd9a DN |
1060 | } |
1061 | ||
1062 | ||
1063 | /* Special subroutine for getting a symbol node associated with a | |
1064 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1065 | symbol is created in the parent using with symtree node in the | |
1066 | child unit pointing to the symbol. If the current namespace has no | |
1067 | parent, then the symbol is just created in the current unit. */ | |
1068 | ||
1069 | static int | |
636dff67 | 1070 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1071 | { |
1072 | gfc_symtree *st; | |
1073 | gfc_symbol *sym; | |
a7ca4d8d | 1074 | int rc = 0; |
6de9cd9a | 1075 | |
1a492601 PT |
1076 | /* Module functions have to be left in their own namespace because |
1077 | they have potentially (almost certainly!) already been referenced. | |
1078 | In this sense, they are rather like external functions. This is | |
1079 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1080 | space is set to point to the master function, so that the fake | |
1081 | result mechanism can work. */ | |
1082 | if (module_fcn_entry) | |
6c12686b PT |
1083 | { |
1084 | /* Present if entry is declared to be a module procedure. */ | |
1085 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1086 | |
6c12686b PT |
1087 | if (*result == NULL) |
1088 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1089 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1090 | && (*result)->ts.type == BT_UNKNOWN |
1091 | && sym->attr.flavor == FL_UNKNOWN) | |
1092 | /* Pick up the typespec for the entry, if declared in the function | |
1093 | body. Note that this symbol is FL_UNKNOWN because it will | |
1094 | only have appeared in a type declaration. The local symtree | |
1095 | is set to point to the module symbol and a unique symtree | |
1096 | to the local version. This latter ensures a correct clearing | |
1097 | of the symbols. */ | |
2e32a71e PT |
1098 | { |
1099 | /* If the ENTRY proceeds its specification, we need to ensure | |
1100 | that this does not raise a "has no IMPLICIT type" error. */ | |
1101 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1102 | sym->attr.untyped = 1; |
2e32a71e | 1103 | |
0e5a218b | 1104 | (*result)->ts = sym->ts; |
2e32a71e PT |
1105 | |
1106 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1107 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1108 | can be applied. */ |
1109 | (*result)->ns = gfc_current_ns; | |
1110 | ||
1111 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1112 | st->n.sym = *result; | |
1113 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1114 | sym->refs++; |
2e32a71e PT |
1115 | st->n.sym = sym; |
1116 | } | |
6c12686b | 1117 | } |
68ea355b PT |
1118 | else |
1119 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1120 | |
a7ca4d8d PT |
1121 | if (rc) |
1122 | return rc; | |
1123 | ||
68ea355b | 1124 | sym = *result; |
79124116 PT |
1125 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1126 | return rc; | |
6de9cd9a | 1127 | |
4668d6f9 PT |
1128 | if (sym->attr.module_procedure |
1129 | && sym->attr.if_source == IFSRC_IFBODY) | |
1130 | { | |
1131 | /* Create a partially populated interface symbol to carry the | |
1132 | characteristics of the procedure and the result. */ | |
c064374d PT |
1133 | sym->tlink = gfc_new_symbol (name, sym->ns); |
1134 | gfc_add_type (sym->tlink, &(sym->ts), | |
4668d6f9 | 1135 | &gfc_current_locus); |
c064374d | 1136 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1137 | if (sym->attr.dimension) |
c064374d | 1138 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1139 | |
1140 | /* Ideally, at this point, a copy would be made of the formal | |
1141 | arguments and their namespace. However, this does not appear | |
1142 | to be necessary, albeit at the expense of not being able to | |
1143 | use gfc_compare_interfaces directly. */ | |
1144 | ||
1145 | if (sym->result && sym->result != sym) | |
1146 | { | |
c064374d | 1147 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1148 | sym->result = NULL; |
1149 | } | |
1150 | else if (sym->result) | |
1151 | { | |
c064374d | 1152 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1153 | } |
1154 | } | |
1155 | else if (sym && !sym->gfc_new | |
1156 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1157 | { |
cda7004b PT |
1158 | /* Trap another encompassed procedure with the same name. All |
1159 | these conditions are necessary to avoid picking up an entry | |
1160 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1161 | this is handled using gsymbols to register unique, globally |
cda7004b | 1162 | accessible names. */ |
68ea355b | 1163 | if (sym->attr.flavor != 0 |
636dff67 SK |
1164 | && sym->attr.proc != 0 |
1165 | && (sym->attr.subroutine || sym->attr.function) | |
1166 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
1167 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1168 | name, &sym->declared_at); | |
68ea355b | 1169 | |
fd3e70af JD |
1170 | /* Trap a procedure with a name the same as interface in the |
1171 | encompassing scope. */ | |
1172 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1173 | && (sym->attr.subroutine || sym->attr.function) |
1174 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
1175 | gfc_error_now ("Name %qs at %C is already defined" |
1176 | " as a generic interface at %L", | |
1177 | name, &sym->declared_at); | |
fd3e70af | 1178 | |
68ea355b PT |
1179 | /* Trap declarations of attributes in encompassing scope. The |
1180 | signature for this is that ts.kind is set. Legitimate | |
1181 | references only set ts.type. */ | |
1182 | if (sym->ts.kind != 0 | |
636dff67 SK |
1183 | && !sym->attr.implicit_type |
1184 | && sym->attr.proc == 0 | |
1185 | && gfc_current_ns->parent != NULL | |
1186 | && sym->attr.access == 0 | |
1187 | && !module_fcn_entry) | |
fea70c99 MLI |
1188 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1189 | "and must not have attributes declared at %L", | |
1190 | name, &sym->declared_at); | |
68ea355b PT |
1191 | } |
1192 | ||
1193 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1194 | return rc; | |
6de9cd9a | 1195 | |
1a492601 PT |
1196 | /* Module function entries will already have a symtree in |
1197 | the current namespace but will need one at module level. */ | |
1198 | if (module_fcn_entry) | |
6c12686b PT |
1199 | { |
1200 | /* Present if entry is declared to be a module procedure. */ | |
1201 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1202 | if (st == NULL) | |
1203 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1204 | } | |
1a492601 PT |
1205 | else |
1206 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1207 | |
6de9cd9a DN |
1208 | st->n.sym = sym; |
1209 | sym->refs++; | |
1210 | ||
66e4ab31 | 1211 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1212 | |
1a492601 | 1213 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1214 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1215 | && sym->attr.proc != PROC_MODULE) | |
1216 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1217 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1218 | rc = 2; |
1219 | ||
1220 | return rc; | |
1221 | } | |
1222 | ||
1223 | ||
a8b3b0b6 CR |
1224 | /* Verify that the given symbol representing a parameter is C |
1225 | interoperable, by checking to see if it was marked as such after | |
1226 | its declaration. If the given symbol is not interoperable, a | |
1227 | warning is reported, thus removing the need to return the status to | |
1228 | the calling function. The standard does not require the user use | |
1229 | one of the iso_c_binding named constants to declare an | |
1230 | interoperable parameter, but we can't be sure if the param is C | |
1231 | interop or not if the user doesn't. For example, integer(4) may be | |
1232 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1233 | a number of the C types, which causes a problem because the | |
1234 | compiler can't know which one. This code is almost certainly not | |
1235 | portable, and the user will get what they deserve if the C type | |
1236 | across platforms isn't always interoperable with integer(4). If | |
1237 | the user had used something like integer(c_int) or integer(c_long), | |
1238 | the compiler could have automatically handled the varying sizes | |
1239 | across platforms. */ | |
1240 | ||
524af0d6 | 1241 | bool |
00820a2a | 1242 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1243 | { |
1244 | int is_c_interop = 0; | |
524af0d6 | 1245 | bool retval = true; |
a8b3b0b6 CR |
1246 | |
1247 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1248 | Don't repeat the checks here. */ | |
1249 | if (sym->attr.implicit_type) | |
524af0d6 | 1250 | return true; |
f5acf0f2 | 1251 | |
a8b3b0b6 CR |
1252 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1253 | they're interoperable if they're BIND(C) and their params are all | |
1254 | interoperable. */ | |
1255 | if (sym->attr.flavor == FL_PROCEDURE) | |
1256 | { | |
1257 | if (sym->attr.is_bind_c == 0) | |
1258 | { | |
4daa149b TB |
1259 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1260 | "attribute to be C interoperable", sym->name, | |
1261 | &(sym->declared_at)); | |
524af0d6 | 1262 | return false; |
a8b3b0b6 CR |
1263 | } |
1264 | else | |
1265 | { | |
1266 | if (sym->attr.is_c_interop == 1) | |
1267 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1268 | return true; |
a8b3b0b6 CR |
1269 | else |
1270 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1271 | sym->common_block); | |
1272 | } | |
1273 | } | |
f5acf0f2 | 1274 | |
a8b3b0b6 CR |
1275 | /* See if we've stored a reference to a procedure that owns sym. */ |
1276 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1277 | { | |
1278 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1279 | { | |
524af0d6 | 1280 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1281 | |
1282 | if (is_c_interop != 1) | |
1283 | { | |
1284 | /* Make personalized messages to give better feedback. */ | |
1285 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1286 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1287 | "BIND(C) procedure %qs but is not C interoperable " | |
1288 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1289 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1290 | sym->ns->proc_name->name, |
bc21d315 | 1291 | sym->ts.u.derived->name); |
00820a2a | 1292 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1293 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1294 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1295 | "because it is polymorphic", |
1296 | sym->name, &(sym->declared_at), | |
1297 | sym->ns->proc_name->name); | |
4daa149b | 1298 | else if (warn_c_binding_type) |
48749dbc MLI |
1299 | gfc_warning (OPT_Wc_binding_type, |
1300 | "Variable %qs at %L is a dummy argument of the " | |
1301 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1302 | "interoperable", |
1303 | sym->name, &(sym->declared_at), | |
1304 | sym->ns->proc_name->name); | |
1305 | } | |
aa5e22f0 CR |
1306 | |
1307 | /* Character strings are only C interoperable if they have a | |
1308 | length of 1. */ | |
1309 | if (sym->ts.type == BT_CHARACTER) | |
1310 | { | |
bc21d315 | 1311 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1312 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1313 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1314 | { | |
c4100eae | 1315 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1316 | "must be length 1 because " |
c4100eae | 1317 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1318 | sym->name, &sym->declared_at, |
1319 | sym->ns->proc_name->name); | |
524af0d6 | 1320 | retval = false; |
aa5e22f0 CR |
1321 | } |
1322 | } | |
1323 | ||
a8b3b0b6 CR |
1324 | /* We have to make sure that any param to a bind(c) routine does |
1325 | not have the allocatable, pointer, or optional attributes, | |
1326 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1327 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1328 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1329 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1330 | "with BIND(C)", sym->name, |
1331 | &(sym->declared_at), | |
1332 | sym->ns->proc_name->name)) | |
1333 | retval = false; | |
1334 | ||
1335 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1336 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1337 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1338 | "with BIND(C)", sym->name, |
1339 | &(sym->declared_at), | |
1340 | sym->ns->proc_name->name)) | |
1341 | retval = false; | |
1342 | ||
1343 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1344 | { |
c4100eae MLI |
1345 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1346 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1347 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1348 | sym->ns->proc_name->name); |
524af0d6 | 1349 | retval = false; |
a8b3b0b6 CR |
1350 | } |
1351 | ||
2e8d9212 | 1352 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1353 | { |
c4100eae MLI |
1354 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1355 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1356 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1357 | sym->ns->proc_name->name); |
524af0d6 | 1358 | retval = false; |
a8b3b0b6 | 1359 | } |
2e8d9212 | 1360 | else if (sym->attr.optional == 1 |
a4d9b221 | 1361 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1362 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1363 | "procedure %qs which is BIND(C)", |
1364 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1365 | sym->ns->proc_name->name)) |
1366 | retval = false; | |
a8b3b0b6 CR |
1367 | |
1368 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1369 | either assumed size or explicit shape. Deferred shape is already |
1370 | covered by the pointer/allocatable attribute. */ | |
1371 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1372 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 | 1373 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1374 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1375 | &(sym->declared_at), |
1376 | sym->ns->proc_name->name, | |
524af0d6 JB |
1377 | &(sym->ns->proc_name->declared_at))) |
1378 | retval = false; | |
a8b3b0b6 CR |
1379 | } |
1380 | } | |
1381 | ||
1382 | return retval; | |
1383 | } | |
1384 | ||
1385 | ||
cf2b3c22 | 1386 | |
a8b3b0b6 | 1387 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1388 | |
524af0d6 | 1389 | static bool |
e69afb29 | 1390 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1391 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1392 | { |
1393 | symbol_attribute attr; | |
1394 | gfc_symbol *sym; | |
1e6025b6 | 1395 | int upper; |
bedee914 PT |
1396 | gfc_symtree *st; |
1397 | ||
1398 | /* Symbols in a submodule are host associated from the parent module or | |
1399 | submodules. Therefore, they can be overridden by declarations in the | |
1400 | submodule scope. Deal with this by attaching the existing symbol to | |
1401 | a new symtree and recycling the old symtree with a new symbol... */ | |
1402 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1403 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1404 | && st->n.sym != NULL | |
1405 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1406 | { | |
1407 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1408 | s->n.sym = st->n.sym; | |
1409 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1410 | |
bedee914 PT |
1411 | |
1412 | st->n.sym = sym; | |
1413 | sym->refs++; | |
1414 | gfc_set_sym_referenced (sym); | |
1415 | } | |
1416 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1417 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1418 | return false; |
6de9cd9a | 1419 | |
1e6025b6 TK |
1420 | /* Check if the name has already been defined as a type. The |
1421 | first letter of the symtree will be in upper case then. Of | |
1422 | course, this is only necessary if the upper case letter is | |
1423 | actually different. */ | |
1424 | ||
1425 | upper = TOUPPER(name[0]); | |
1426 | if (upper != name[0]) | |
1427 | { | |
1428 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1429 | gfc_symtree *st; | |
1430 | int nlen; | |
1431 | ||
1432 | nlen = strlen(name); | |
1433 | gcc_assert (nlen <= GFC_MAX_SYMBOL_LEN); | |
1434 | strncpy (u_name, name, nlen + 1); | |
1435 | u_name[0] = upper; | |
1436 | ||
1437 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1438 | ||
f6288c24 FR |
1439 | /* STRUCTURE types can alias symbol names */ |
1440 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1441 | { |
1442 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1443 | &st->n.sym->declared_at); | |
1444 | return false; | |
1445 | } | |
1446 | } | |
1447 | ||
66e4ab31 | 1448 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1449 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1450 | && (sym->attr.implicit_type == 0 |
1451 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1452 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1453 | return false; | |
6de9cd9a DN |
1454 | |
1455 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1456 | { |
1457 | sym->ts.u.cl = cl; | |
1458 | sym->ts.deferred = cl_deferred; | |
1459 | } | |
6de9cd9a DN |
1460 | |
1461 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1462 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1463 | return false; | |
6de9cd9a DN |
1464 | *as = NULL; |
1465 | ||
1466 | /* Add attribute to symbol. The copy is so that we can reset the | |
1467 | dimension attribute. */ | |
1468 | attr = current_attr; | |
1469 | attr.dimension = 0; | |
be59db2d | 1470 | attr.codimension = 0; |
6de9cd9a | 1471 | |
524af0d6 JB |
1472 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1473 | return false; | |
6de9cd9a | 1474 | |
a8b3b0b6 CR |
1475 | /* Finish any work that may need to be done for the binding label, |
1476 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1477 | is made, and before the symbol name (for data decls), so the | |
1478 | current_ts is holding the binding label, or nothing if the | |
1479 | name= attr wasn't given. Therefore, test here if we're dealing | |
1480 | with a bind(c) and make sure the binding label is set correctly. */ | |
1481 | if (sym->attr.is_bind_c == 1) | |
1482 | { | |
62603fae | 1483 | if (!sym->binding_label) |
a8b3b0b6 | 1484 | { |
ad4a2f64 TB |
1485 | /* Set the binding label and verify that if a NAME= was specified |
1486 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1487 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1488 | num_idents_on_line)) |
1489 | return false; | |
a8b3b0b6 CR |
1490 | } |
1491 | } | |
1492 | ||
1493 | /* See if we know we're in a common block, and if it's a bind(c) | |
1494 | common then we need to make sure we're an interoperable type. */ | |
1495 | if (sym->attr.in_common == 1) | |
1496 | { | |
1497 | /* Test the common block object. */ | |
1498 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1499 | && sym->ts.is_c_interop != 1) | |
1500 | { | |
4daa149b | 1501 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1502 | "must be declared with a C interoperable " |
4daa149b | 1503 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1504 | sym->name, sym->common_block->name, |
1505 | sym->common_block->name); | |
1506 | gfc_clear_error (); | |
1507 | } | |
1508 | } | |
1509 | ||
9a3db5a3 PT |
1510 | sym->attr.implied_index = 0; |
1511 | ||
5bab4c96 PT |
1512 | /* Use the parameter expressions for a parameterized derived type. */ |
1513 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1514 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1515 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1516 | ||
528622fd | 1517 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1518 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1519 | |
524af0d6 | 1520 | return true; |
6de9cd9a DN |
1521 | } |
1522 | ||
636dff67 | 1523 | |
df7cc9b5 | 1524 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1525 | truncated. If we're inside an array constructor without a typespec, we |
1526 | additionally check that all elements have the same length; check_len -1 | |
1527 | means no checking. */ | |
df7cc9b5 FW |
1528 | |
1529 | void | |
d2848082 | 1530 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1531 | { |
00660189 | 1532 | gfc_char_t *s; |
df7cc9b5 FW |
1533 | int slen; |
1534 | ||
834e9dbb SK |
1535 | if (expr->ts.type != BT_CHARACTER) |
1536 | return; | |
63af1586 | 1537 | |
b441ae1d SK |
1538 | if (expr->expr_type != EXPR_CONSTANT) |
1539 | { | |
1540 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1541 | return; | |
1542 | } | |
df7cc9b5 FW |
1543 | |
1544 | slen = expr->value.character.length; | |
1545 | if (len != slen) | |
1546 | { | |
00660189 FXC |
1547 | s = gfc_get_wide_string (len + 1); |
1548 | memcpy (s, expr->value.character.string, | |
1549 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1550 | if (len > slen) |
00660189 | 1551 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1552 | |
a96c39ea | 1553 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1554 | gfc_warning_now (OPT_Wcharacter_truncation, |
1555 | "CHARACTER expression at %L is being truncated " | |
1556 | "(%d/%d)", &expr->where, slen, len); | |
2220652d PT |
1557 | |
1558 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1559 | initializers. */ | |
d2848082 DK |
1560 | if (check_len != -1 && slen != check_len |
1561 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1562 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1563 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1564 | &expr->where, slen, check_len); |
2220652d | 1565 | |
150675a8 | 1566 | s[len] = '\0'; |
cede9502 | 1567 | free (expr->value.character.string); |
df7cc9b5 FW |
1568 | expr->value.character.string = s; |
1569 | expr->value.character.length = len; | |
1570 | } | |
1571 | } | |
6de9cd9a | 1572 | |
25d8f0a2 | 1573 | |
d51347f9 | 1574 | /* Function to create and update the enumerator history |
25d8f0a2 | 1575 | using the information passed as arguments. |
d51347f9 TB |
1576 | Pointer "max_enum" is also updated, to point to |
1577 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1578 | |
1579 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1580 | INIT points to its enumerator value. */ |
25d8f0a2 | 1581 | |
d51347f9 | 1582 | static void |
636dff67 | 1583 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1584 | { |
1585 | enumerator_history *new_enum_history; | |
1586 | gcc_assert (sym != NULL && init != NULL); | |
1587 | ||
ece3f663 | 1588 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1589 | |
1590 | new_enum_history->sym = sym; | |
1591 | new_enum_history->initializer = init; | |
1592 | new_enum_history->next = NULL; | |
1593 | ||
1594 | if (enum_history == NULL) | |
1595 | { | |
1596 | enum_history = new_enum_history; | |
1597 | max_enum = enum_history; | |
1598 | } | |
1599 | else | |
1600 | { | |
1601 | new_enum_history->next = enum_history; | |
1602 | enum_history = new_enum_history; | |
1603 | ||
d51347f9 | 1604 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1605 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1606 | max_enum = new_enum_history; |
25d8f0a2 TS |
1607 | } |
1608 | } | |
1609 | ||
1610 | ||
d51347f9 | 1611 | /* Function to free enum kind history. */ |
25d8f0a2 | 1612 | |
d51347f9 | 1613 | void |
636dff67 | 1614 | gfc_free_enum_history (void) |
25d8f0a2 | 1615 | { |
d51347f9 TB |
1616 | enumerator_history *current = enum_history; |
1617 | enumerator_history *next; | |
25d8f0a2 TS |
1618 | |
1619 | while (current != NULL) | |
1620 | { | |
1621 | next = current->next; | |
cede9502 | 1622 | free (current); |
25d8f0a2 TS |
1623 | current = next; |
1624 | } | |
1625 | max_enum = NULL; | |
1626 | enum_history = NULL; | |
1627 | } | |
1628 | ||
1629 | ||
6de9cd9a DN |
1630 | /* Function called by variable_decl() that adds an initialization |
1631 | expression to a symbol. */ | |
1632 | ||
524af0d6 | 1633 | static bool |
66e4ab31 | 1634 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1635 | { |
1636 | symbol_attribute attr; | |
1637 | gfc_symbol *sym; | |
1638 | gfc_expr *init; | |
1639 | ||
1640 | init = *initp; | |
08a6b8e0 | 1641 | if (find_special (name, &sym, false)) |
524af0d6 | 1642 | return false; |
6de9cd9a DN |
1643 | |
1644 | attr = sym->attr; | |
1645 | ||
1646 | /* If this symbol is confirming an implicit parameter type, | |
1647 | then an initialization expression is not allowed. */ | |
1648 | if (attr.flavor == FL_PARAMETER | |
1649 | && sym->value != NULL | |
1650 | && *initp != NULL) | |
1651 | { | |
c4100eae | 1652 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1653 | sym->name); |
524af0d6 | 1654 | return false; |
6de9cd9a DN |
1655 | } |
1656 | ||
1657 | if (init == NULL) | |
1658 | { | |
1659 | /* An initializer is required for PARAMETER declarations. */ | |
1660 | if (attr.flavor == FL_PARAMETER) | |
1661 | { | |
1662 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1663 | return false; |
6de9cd9a DN |
1664 | } |
1665 | } | |
1666 | else | |
1667 | { | |
1668 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1669 | initializer. */ |
6de9cd9a DN |
1670 | if (sym->attr.data) |
1671 | { | |
c4100eae | 1672 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1673 | "appears in a DATA statement", sym->name); |
524af0d6 | 1674 | return false; |
6de9cd9a DN |
1675 | } |
1676 | ||
75d17889 | 1677 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1678 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1679 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1680 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1681 | && !sym->attr.proc_pointer |
524af0d6 JB |
1682 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1683 | return false; | |
6de9cd9a | 1684 | |
bc21d315 | 1685 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1686 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1687 | { |
1688 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1689 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1690 | return false; | |
51b128a0 | 1691 | |
bc21d315 | 1692 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1693 | { |
a99288e5 | 1694 | int clen; |
66e4ab31 SK |
1695 | /* If there are multiple CHARACTER variables declared on the |
1696 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1697 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1698 | |
a99288e5 PT |
1699 | if (sym->attr.flavor == FL_PARAMETER) |
1700 | { | |
1701 | if (init->expr_type == EXPR_CONSTANT) | |
1702 | { | |
1703 | clen = init->value.character.length; | |
b7e75771 JD |
1704 | sym->ts.u.cl->length |
1705 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1706 | NULL, clen); | |
a99288e5 PT |
1707 | } |
1708 | else if (init->expr_type == EXPR_ARRAY) | |
1709 | { | |
dc0f176a | 1710 | if (init->ts.u.cl) |
39abef62 LK |
1711 | { |
1712 | const gfc_expr *length = init->ts.u.cl->length; | |
1713 | if (length->expr_type != EXPR_CONSTANT) | |
1714 | { | |
1715 | gfc_error ("Cannot initialize parameter array " | |
1716 | "at %L " | |
1717 | "with variable length elements", | |
1718 | &sym->declared_at); | |
1719 | return false; | |
1720 | } | |
1721 | clen = mpz_get_si (length->value.integer); | |
1722 | } | |
dc0f176a SK |
1723 | else if (init->value.constructor) |
1724 | { | |
1725 | gfc_constructor *c; | |
70112e2a | 1726 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1727 | clen = c->expr->value.character.length; |
1728 | } | |
1729 | else | |
1730 | gcc_unreachable (); | |
b7e75771 JD |
1731 | sym->ts.u.cl->length |
1732 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1733 | NULL, clen); | |
a99288e5 | 1734 | } |
bc21d315 JW |
1735 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1736 | sym->ts.u.cl->length = | |
1737 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1738 | } |
df7cc9b5 FW |
1739 | } |
1740 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1741 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1742 | { |
d30ecc9c SK |
1743 | int len; |
1744 | ||
1745 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1746 | return false; | |
1747 | ||
1748 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
df7cc9b5 FW |
1749 | |
1750 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1751 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1752 | else if (init->expr_type == EXPR_ARRAY) |
1753 | { | |
b7e75771 JD |
1754 | gfc_constructor *c; |
1755 | ||
dcdc7b6c PT |
1756 | /* Build a new charlen to prevent simplification from |
1757 | deleting the length before it is resolved. */ | |
b76e28c6 | 1758 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1759 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1760 | |
b7e75771 JD |
1761 | for (c = gfc_constructor_first (init->value.constructor); |
1762 | c; c = gfc_constructor_next (c)) | |
1763 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1764 | } |
1765 | } | |
1766 | } | |
1767 | ||
f5ca06e6 DK |
1768 | /* If sym is implied-shape, set its upper bounds from init. */ |
1769 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1770 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1771 | { | |
1772 | int dim; | |
1773 | ||
1774 | if (init->rank == 0) | |
1775 | { | |
1776 | gfc_error ("Can't initialize implied-shape array at %L" | |
1777 | " with scalar", &sym->declared_at); | |
524af0d6 | 1778 | return false; |
f5ca06e6 | 1779 | } |
f5ca06e6 DK |
1780 | |
1781 | /* Shape should be present, we get an initialization expression. */ | |
1782 | gcc_assert (init->shape); | |
1783 | ||
1784 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1785 | { | |
1786 | int k; | |
cdffe788 | 1787 | gfc_expr *e, *lower; |
f5acf0f2 | 1788 | |
f5ca06e6 | 1789 | lower = sym->as->lower[dim]; |
cdffe788 | 1790 | |
70112e2a | 1791 | /* If the lower bound is an array element from another |
cdffe788 SK |
1792 | parameterized array, then it is marked with EXPR_VARIABLE and |
1793 | is an initialization expression. Try to reduce it. */ | |
1794 | if (lower->expr_type == EXPR_VARIABLE) | |
1795 | gfc_reduce_init_expr (lower); | |
1796 | ||
1797 | if (lower->expr_type == EXPR_CONSTANT) | |
1798 | { | |
1799 | /* All dimensions must be without upper bound. */ | |
1800 | gcc_assert (!sym->as->upper[dim]); | |
1801 | ||
1802 | k = lower->ts.kind; | |
1803 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1804 | mpz_add (e->value.integer, lower->value.integer, | |
1805 | init->shape[dim]); | |
1806 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1807 | sym->as->upper[dim] = e; | |
1808 | } | |
1809 | else | |
f5ca06e6 DK |
1810 | { |
1811 | gfc_error ("Non-constant lower bound in implied-shape" | |
1812 | " declaration at %L", &lower->where); | |
524af0d6 | 1813 | return false; |
f5ca06e6 | 1814 | } |
f5ca06e6 DK |
1815 | } |
1816 | ||
1817 | sym->as->type = AS_EXPLICIT; | |
1818 | } | |
1819 | ||
a8b3b0b6 CR |
1820 | /* Need to check if the expression we initialized this |
1821 | to was one of the iso_c_binding named constants. If so, | |
1822 | and we're a parameter (constant), let it be iso_c. | |
1823 | For example: | |
1824 | integer(c_int), parameter :: my_int = c_int | |
1825 | integer(my_int) :: my_int_2 | |
1826 | If we mark my_int as iso_c (since we can see it's value | |
1827 | is equal to one of the named constants), then my_int_2 | |
1828 | will be considered C interoperable. */ | |
f6288c24 | 1829 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
1830 | { |
1831 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1832 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1833 | /* attr bits needed for module files. */ | |
1834 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1835 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1836 | if (init->ts.is_iso_c) | |
1837 | sym->ts.f90_type = init->ts.f90_type; | |
1838 | } | |
b7e75771 | 1839 | |
6de9cd9a DN |
1840 | /* Add initializer. Make sure we keep the ranks sane. */ |
1841 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1842 | { |
1843 | mpz_t size; | |
1844 | gfc_expr *array; | |
a9b43781 PT |
1845 | int n; |
1846 | if (sym->attr.flavor == FL_PARAMETER | |
1847 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1848 | && spec_size (sym->as, &size) |
a9b43781 PT |
1849 | && mpz_cmp_si (size, 0) > 0) |
1850 | { | |
b7e75771 JD |
1851 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1852 | &init->where); | |
a9b43781 | 1853 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1854 | gfc_constructor_append_expr (&array->value.constructor, |
1855 | n == 0 | |
1856 | ? init | |
1857 | : gfc_copy_expr (init), | |
1858 | &init->where); | |
f5acf0f2 | 1859 | |
a9b43781 PT |
1860 | array->shape = gfc_get_shape (sym->as->rank); |
1861 | for (n = 0; n < sym->as->rank; n++) | |
1862 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1863 | ||
1864 | init = array; | |
1865 | mpz_clear (size); | |
1866 | } | |
1867 | init->rank = sym->as->rank; | |
1868 | } | |
6de9cd9a DN |
1869 | |
1870 | sym->value = init; | |
ef7236d2 DF |
1871 | if (sym->attr.save == SAVE_NONE) |
1872 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1873 | *initp = NULL; |
1874 | } | |
1875 | ||
524af0d6 | 1876 | return true; |
6de9cd9a DN |
1877 | } |
1878 | ||
1879 | ||
1880 | /* Function called by variable_decl() that adds a name to a structure | |
1881 | being built. */ | |
1882 | ||
524af0d6 | 1883 | static bool |
636dff67 SK |
1884 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1885 | gfc_array_spec **as) | |
6de9cd9a | 1886 | { |
f6288c24 | 1887 | gfc_state_data *s; |
6de9cd9a DN |
1888 | gfc_component *c; |
1889 | ||
619dd721 | 1890 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1891 | constructing, it must have the pointer attribute. */ |
619dd721 | 1892 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1893 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1894 | && current_attr.pointer == 0) |
1895 | { | |
bf9f15ee PT |
1896 | if (current_attr.allocatable |
1897 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
1898 | "must have the POINTER attribute")) | |
1899 | { | |
1900 | return false; | |
1901 | } | |
1902 | else if (current_attr.allocatable == 0) | |
1903 | { | |
9cbf8673 JW |
1904 | gfc_error ("Component at %C must have the POINTER attribute"); |
1905 | return false; | |
1906 | } | |
6de9cd9a | 1907 | } |
9cbf8673 JW |
1908 | |
1909 | /* F03:C437. */ | |
1910 | if (current_ts.type == BT_CLASS | |
1911 | && !(current_attr.pointer || current_attr.allocatable)) | |
1912 | { | |
1913 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
1914 | "or pointer", name); | |
1915 | return false; | |
bf9f15ee | 1916 | } |
6de9cd9a | 1917 | |
636dff67 | 1918 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1919 | { |
1920 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1921 | { | |
1922 | gfc_error ("Array component of structure at %C must have explicit " | |
1923 | "or deferred shape"); | |
524af0d6 | 1924 | return false; |
6de9cd9a DN |
1925 | } |
1926 | } | |
1927 | ||
f6288c24 FR |
1928 | /* If we are in a nested union/map definition, gfc_add_component will not |
1929 | properly find repeated components because: | |
6442a6f4 | 1930 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
1931 | and maps are implicity chained so nested components may conflict. |
1932 | (ii) Unions and maps are not linked as components of their parent | |
1933 | structures until after they are parsed. | |
1934 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
1935 | we search each block directly from the parse stack until we find the top | |
1936 | level structure. */ | |
1937 | ||
1938 | s = gfc_state_stack; | |
1939 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
1940 | { | |
1941 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
1942 | { | |
1943 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
1944 | if (c != NULL) | |
1945 | { | |
2f029c08 | 1946 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
1947 | name, &c->loc); |
1948 | return false; | |
1949 | } | |
1950 | /* Break after we've searched the entire chain. */ | |
1951 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
1952 | break; | |
1953 | s = s->previous; | |
1954 | } | |
1955 | } | |
1956 | ||
524af0d6 JB |
1957 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1958 | return false; | |
6de9cd9a DN |
1959 | |
1960 | c->ts = current_ts; | |
bc21d315 JW |
1961 | if (c->ts.type == BT_CHARACTER) |
1962 | c->ts.u.cl = cl; | |
5bab4c96 PT |
1963 | |
1964 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
1965 | && c->ts.kind == 0 && saved_kind_expr != NULL) | |
1966 | c->kind_expr = gfc_copy_expr (saved_kind_expr); | |
1967 | ||
d4b7d0f0 | 1968 | c->attr = current_attr; |
6de9cd9a DN |
1969 | |
1970 | c->initializer = *init; | |
1971 | *init = NULL; | |
1972 | ||
1973 | c->as = *as; | |
1974 | if (c->as != NULL) | |
be59db2d TB |
1975 | { |
1976 | if (c->as->corank) | |
1977 | c->attr.codimension = 1; | |
1978 | if (c->as->rank) | |
1979 | c->attr.dimension = 1; | |
1980 | } | |
6de9cd9a DN |
1981 | *as = NULL; |
1982 | ||
7fc61626 | 1983 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 1984 | |
6de9cd9a | 1985 | /* Check array components. */ |
d4b7d0f0 | 1986 | if (!c->attr.dimension) |
2e23972e | 1987 | goto scalar; |
6de9cd9a | 1988 | |
d4b7d0f0 | 1989 | if (c->attr.pointer) |
6de9cd9a DN |
1990 | { |
1991 | if (c->as->type != AS_DEFERRED) | |
1992 | { | |
5046aff5 PT |
1993 | gfc_error ("Pointer array component of structure at %C must have a " |
1994 | "deferred shape"); | |
a4f15a7d | 1995 | return false; |
5046aff5 PT |
1996 | } |
1997 | } | |
d4b7d0f0 | 1998 | else if (c->attr.allocatable) |
5046aff5 PT |
1999 | { |
2000 | if (c->as->type != AS_DEFERRED) | |
2001 | { | |
2002 | gfc_error ("Allocatable component of structure at %C must have a " | |
2003 | "deferred shape"); | |
a4f15a7d | 2004 | return false; |
6de9cd9a DN |
2005 | } |
2006 | } | |
2007 | else | |
2008 | { | |
2009 | if (c->as->type != AS_EXPLICIT) | |
2010 | { | |
636dff67 SK |
2011 | gfc_error ("Array component of structure at %C must have an " |
2012 | "explicit shape"); | |
a4f15a7d | 2013 | return false; |
6de9cd9a DN |
2014 | } |
2015 | } | |
2016 | ||
2e23972e JW |
2017 | scalar: |
2018 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2019 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2020 | |
5bab4c96 PT |
2021 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2022 | { | |
2023 | gfc_symbol *sym; | |
2024 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2025 | 0, &sym); | |
2026 | if (sym == NULL) | |
2027 | { | |
2028 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2029 | "in the type parameter name list at %L", | |
2030 | c->name, &gfc_current_block ()->declared_at); | |
2031 | return false; | |
2032 | } | |
2033 | sym->ts = c->ts; | |
2034 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2035 | sym->attr.pdt_len = c->attr.pdt_len; | |
2036 | if (c->initializer) | |
2037 | sym->value = gfc_copy_expr (c->initializer); | |
2038 | sym->attr.flavor = FL_VARIABLE; | |
2039 | } | |
2040 | ||
2041 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2042 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2043 | && decl_type_param_list) | |
2044 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2045 | ||
a4f15a7d | 2046 | return true; |
6de9cd9a DN |
2047 | } |
2048 | ||
2049 | ||
2050 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2051 | ||
2052 | match | |
636dff67 | 2053 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2054 | { |
2055 | gfc_symbol *sym; | |
576f6da6 | 2056 | match m, m2 = MATCH_NO; |
6de9cd9a | 2057 | |
576f6da6 TB |
2058 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2059 | return MATCH_ERROR; | |
2060 | ||
2061 | if (m == MATCH_NO) | |
2062 | { | |
2063 | locus old_loc; | |
2064 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2065 | ||
94241120 | 2066 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2067 | return m2; |
2068 | ||
2069 | old_loc = gfc_current_locus; | |
2070 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2071 | return MATCH_ERROR; | |
2072 | if (m2 != MATCH_YES | |
2073 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2074 | return MATCH_ERROR; | |
2075 | if (m2 == MATCH_NO) | |
2076 | { | |
2077 | gfc_current_locus = old_loc; | |
2078 | return MATCH_NO; | |
2079 | } | |
2080 | } | |
6de9cd9a DN |
2081 | |
2082 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2083 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2084 | { | |
2085 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2086 | return MATCH_ERROR; | |
2087 | } | |
2088 | ||
2089 | gfc_intrinsic_symbol (sym); | |
2090 | ||
2091 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2092 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2093 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2094 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2095 | return MATCH_ERROR; |
2096 | ||
b7e75771 | 2097 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2098 | |
576f6da6 TB |
2099 | /* Invalid per F2008, C512. */ |
2100 | if (m2 == MATCH_YES) | |
2101 | { | |
2102 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2103 | return MATCH_ERROR; | |
2104 | } | |
2105 | ||
6de9cd9a DN |
2106 | return MATCH_YES; |
2107 | } | |
2108 | ||
2109 | ||
80f95228 JW |
2110 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2111 | ||
2112 | static match | |
2113 | match_pointer_init (gfc_expr **init, int procptr) | |
2114 | { | |
2115 | match m; | |
2116 | ||
f6288c24 | 2117 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2118 | { |
2119 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2120 | "a PURE procedure"); | |
2121 | return MATCH_ERROR; | |
2122 | } | |
ccd7751b | 2123 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2124 | |
eea58adb | 2125 | /* Match NULL() initialization. */ |
80f95228 JW |
2126 | m = gfc_match_null (init); |
2127 | if (m != MATCH_NO) | |
2128 | return m; | |
2129 | ||
2130 | /* Match non-NULL initialization. */ | |
837c4b78 | 2131 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2132 | gfc_matching_procptr_assignment = procptr; |
2133 | m = gfc_match_rvalue (init); | |
837c4b78 | 2134 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2135 | gfc_matching_procptr_assignment = 0; |
2136 | if (m == MATCH_ERROR) | |
2137 | return MATCH_ERROR; | |
2138 | else if (m == MATCH_NO) | |
2139 | { | |
2140 | gfc_error ("Error in pointer initialization at %C"); | |
2141 | return MATCH_ERROR; | |
2142 | } | |
2143 | ||
dc9a54fa JW |
2144 | if (!procptr && !gfc_resolve_expr (*init)) |
2145 | return MATCH_ERROR; | |
f5acf0f2 | 2146 | |
524af0d6 JB |
2147 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2148 | "initialization at %C")) | |
80f95228 JW |
2149 | return MATCH_ERROR; |
2150 | ||
2151 | return MATCH_YES; | |
2152 | } | |
2153 | ||
2154 | ||
524af0d6 | 2155 | static bool |
bb9de0c4 JW |
2156 | check_function_name (char *name) |
2157 | { | |
2158 | /* In functions that have a RESULT variable defined, the function name always | |
2159 | refers to function calls. Therefore, the name is not allowed to appear in | |
2160 | specification statements. When checking this, be careful about | |
2161 | 'hidden' procedure pointer results ('ppr@'). */ | |
2162 | ||
2163 | if (gfc_current_state () == COMP_FUNCTION) | |
2164 | { | |
2165 | gfc_symbol *block = gfc_current_block (); | |
2166 | if (block && block->result && block->result != block | |
2167 | && strcmp (block->result->name, "ppr@") != 0 | |
2168 | && strcmp (block->name, name) == 0) | |
2169 | { | |
c4100eae | 2170 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 2171 | return false; |
bb9de0c4 JW |
2172 | } |
2173 | } | |
2174 | ||
524af0d6 | 2175 | return true; |
bb9de0c4 JW |
2176 | } |
2177 | ||
2178 | ||
6de9cd9a DN |
2179 | /* Match a variable name with an optional initializer. When this |
2180 | subroutine is called, a variable is expected to be parsed next. | |
2181 | Depending on what is happening at the moment, updates either the | |
2182 | symbol table or the current interface. */ | |
2183 | ||
2184 | static match | |
949d5b72 | 2185 | variable_decl (int elem) |
6de9cd9a DN |
2186 | { |
2187 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2188 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2189 | gfc_expr *initializer, *char_len; |
2190 | gfc_array_spec *as; | |
83d890b9 | 2191 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2192 | gfc_charlen *cl; |
e69afb29 | 2193 | bool cl_deferred; |
6de9cd9a DN |
2194 | locus var_locus; |
2195 | match m; | |
524af0d6 | 2196 | bool t; |
83d890b9 | 2197 | gfc_symbol *sym; |
6de9cd9a DN |
2198 | |
2199 | initializer = NULL; | |
2200 | as = NULL; | |
83d890b9 | 2201 | cp_as = NULL; |
6de9cd9a DN |
2202 | |
2203 | /* When we get here, we've just matched a list of attributes and | |
2204 | maybe a type and a double colon. The next thing we expect to see | |
2205 | is the name of the symbol. */ | |
6f855a26 FR |
2206 | |
2207 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2208 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2209 | m = MATCH_NO; | |
2210 | gfc_gobble_whitespace (); | |
2211 | if (gfc_peek_ascii_char () == '%') | |
2212 | { | |
2213 | gfc_next_ascii_char (); | |
2214 | m = gfc_match ("fill"); | |
2215 | } | |
2216 | ||
6de9cd9a | 2217 | if (m != MATCH_YES) |
6f855a26 FR |
2218 | { |
2219 | m = gfc_match_name (name); | |
2220 | if (m != MATCH_YES) | |
2221 | goto cleanup; | |
2222 | } | |
2223 | ||
2224 | else | |
2225 | { | |
2226 | m = MATCH_ERROR; | |
2227 | if (gfc_current_state () != COMP_STRUCTURE) | |
2228 | { | |
2229 | if (flag_dec_structure) | |
2230 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2231 | else | |
2232 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2233 | "%<-fdec-structure%>", "%FILL"); | |
2234 | goto cleanup; | |
2235 | } | |
2236 | ||
2237 | if (attr_seen) | |
2238 | { | |
2239 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2240 | goto cleanup; | |
2241 | } | |
2242 | ||
2243 | /* %FILL components are given invalid fortran names. */ | |
2244 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2245 | m = MATCH_YES; | |
2246 | } | |
6de9cd9a | 2247 | |
63645982 | 2248 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2249 | |
2250 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2251 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2252 | if (m == MATCH_ERROR) |
6de9cd9a | 2253 | goto cleanup; |
25d8f0a2 | 2254 | |
6de9cd9a DN |
2255 | if (m == MATCH_NO) |
2256 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2257 | else if (current_as |
524af0d6 | 2258 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2259 | { |
2260 | m = MATCH_ERROR; | |
2261 | goto cleanup; | |
2262 | } | |
6de9cd9a | 2263 | |
c61819ff | 2264 | if (flag_cray_pointer) |
11126dc0 AL |
2265 | cp_as = gfc_copy_array_spec (as); |
2266 | ||
f5ca06e6 DK |
2267 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2268 | determine (and check) whether it can be implied-shape. If it | |
2269 | was parsed as assumed-size, change it because PARAMETERs can not | |
2270 | be assumed-size. */ | |
2271 | if (as) | |
2272 | { | |
2273 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2274 | { | |
2275 | m = MATCH_ERROR; | |
c4100eae | 2276 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2277 | name, &var_locus); |
2278 | goto cleanup; | |
2279 | } | |
2280 | ||
2281 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2282 | && current_attr.flavor == FL_PARAMETER) | |
2283 | as->type = AS_IMPLIED_SHAPE; | |
2284 | ||
2285 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2286 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2287 | &var_locus)) |
f5ca06e6 DK |
2288 | { |
2289 | m = MATCH_ERROR; | |
2290 | goto cleanup; | |
2291 | } | |
2292 | } | |
2293 | ||
6de9cd9a DN |
2294 | char_len = NULL; |
2295 | cl = NULL; | |
e69afb29 | 2296 | cl_deferred = false; |
6de9cd9a DN |
2297 | |
2298 | if (current_ts.type == BT_CHARACTER) | |
2299 | { | |
2767f2cc | 2300 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2301 | { |
2302 | case MATCH_YES: | |
b76e28c6 | 2303 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2304 | |
2305 | cl->length = char_len; | |
2306 | break; | |
2307 | ||
949d5b72 | 2308 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2309 | element. Also copy assumed lengths. */ |
6de9cd9a | 2310 | case MATCH_NO: |
9b21a380 | 2311 | if (elem > 1 |
bc21d315 JW |
2312 | && (current_ts.u.cl->length == NULL |
2313 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2314 | { |
b76e28c6 | 2315 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2316 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2317 | } |
2318 | else | |
bc21d315 | 2319 | cl = current_ts.u.cl; |
949d5b72 | 2320 | |
e69afb29 SK |
2321 | cl_deferred = current_ts.deferred; |
2322 | ||
6de9cd9a DN |
2323 | break; |
2324 | ||
2325 | case MATCH_ERROR: | |
2326 | goto cleanup; | |
2327 | } | |
2328 | } | |
2329 | ||
4668d6f9 PT |
2330 | /* The dummy arguments and result of the abreviated form of MODULE |
2331 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2332 | if (gfc_current_ns->proc_name | |
2333 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2334 | { | |
2335 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2336 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2337 | { | |
2338 | m = MATCH_ERROR; | |
811582ec | 2339 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2340 | "in the corresponding interface for MODULE " |
811582ec | 2341 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2342 | gfc_current_ns->proc_name->name); |
2343 | goto cleanup; | |
2344 | } | |
2345 | } | |
2346 | ||
6f855a26 FR |
2347 | /* %FILL components may not have initializers. */ |
2348 | if (strncmp (name, "%FILL", 5) == 0 && gfc_match_eos () != MATCH_YES) | |
2349 | { | |
2350 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2351 | m = MATCH_ERROR; | |
2352 | goto cleanup; | |
2353 | } | |
2354 | ||
83d890b9 | 2355 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2356 | and this is not a component declaration, |
66e4ab31 | 2357 | then we want to set the type & bail out. */ |
f6288c24 | 2358 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2359 | { |
2360 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2361 | if (sym != NULL && sym->attr.cray_pointee) | |
2362 | { | |
2363 | sym->ts.type = current_ts.type; | |
2364 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2365 | sym->ts.u.cl = cl; |
2366 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2367 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2368 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2369 | m = MATCH_YES; |
f5acf0f2 | 2370 | |
83d890b9 AL |
2371 | /* Check to see if we have an array specification. */ |
2372 | if (cp_as != NULL) | |
2373 | { | |
2374 | if (sym->as != NULL) | |
2375 | { | |
e25a0da3 | 2376 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2377 | gfc_free_array_spec (cp_as); |
2378 | m = MATCH_ERROR; | |
2379 | goto cleanup; | |
2380 | } | |
2381 | else | |
2382 | { | |
524af0d6 | 2383 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2384 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2385 | |
83d890b9 | 2386 | /* Fix the array spec. */ |
d51347f9 | 2387 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2388 | if (m == MATCH_ERROR) |
2389 | goto cleanup; | |
2390 | } | |
d51347f9 | 2391 | } |
83d890b9 AL |
2392 | goto cleanup; |
2393 | } | |
2394 | else | |
2395 | { | |
2396 | gfc_free_array_spec (cp_as); | |
2397 | } | |
2398 | } | |
d51347f9 | 2399 | |
3070bab4 JW |
2400 | /* Procedure pointer as function result. */ |
2401 | if (gfc_current_state () == COMP_FUNCTION | |
2402 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2403 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2404 | strcpy (name, "ppr@"); | |
2405 | ||
2406 | if (gfc_current_state () == COMP_FUNCTION | |
2407 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2408 | && gfc_current_block ()->result | |
2409 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2410 | strcpy (name, "ppr@"); | |
d51347f9 | 2411 | |
6de9cd9a DN |
2412 | /* OK, we've successfully matched the declaration. Now put the |
2413 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2414 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2415 | perfectly legal: |
2416 | ||
2417 | integer, parameter :: i = huge(i) | |
2418 | ||
2419 | This is only true for parameters or variables of a basic type. | |
2420 | For components of derived types, it is not true, so we don't | |
2421 | create a symbol for those yet. If we fail to create the symbol, | |
2422 | bail out. */ | |
f6288c24 | 2423 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2424 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2425 | { |
72af9f0b PT |
2426 | m = MATCH_ERROR; |
2427 | goto cleanup; | |
2428 | } | |
2429 | ||
524af0d6 | 2430 | if (!check_function_name (name)) |
6de9cd9a | 2431 | { |
6de9cd9a DN |
2432 | m = MATCH_ERROR; |
2433 | goto cleanup; | |
2434 | } | |
2435 | ||
294fbfc8 TS |
2436 | /* We allow old-style initializations of the form |
2437 | integer i /2/, j(4) /3*3, 1/ | |
2438 | (if no colon has been seen). These are different from data | |
2439 | statements in that initializers are only allowed to apply to the | |
2440 | variable immediately preceding, i.e. | |
2441 | integer i, j /1, 2/ | |
2442 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2443 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2444 | |
2445 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2446 | { | |
524af0d6 JB |
2447 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2448 | "initialization at %C")) | |
294fbfc8 | 2449 | return MATCH_ERROR; |
f6288c24 FR |
2450 | |
2451 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2452 | but not components of derived types. */ | |
b18f1efc JJ |
2453 | else if (gfc_current_state () == COMP_DERIVED) |
2454 | { | |
2455 | gfc_error ("Invalid old style initialization for derived type " | |
2456 | "component at %C"); | |
2457 | m = MATCH_ERROR; | |
2458 | goto cleanup; | |
2459 | } | |
f5acf0f2 | 2460 | |
f6288c24 FR |
2461 | /* For structure components, read the initializer as a special |
2462 | expression and let the rest of this function apply the initializer | |
2463 | as usual. */ | |
2464 | else if (gfc_comp_struct (gfc_current_state ())) | |
2465 | { | |
2466 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2467 | if (m == MATCH_NO) | |
2468 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2469 | name); | |
2470 | if (m != MATCH_YES) | |
2471 | goto cleanup; | |
2472 | } | |
2473 | ||
2474 | /* Otherwise we treat the old style initialization just like a | |
2475 | DATA declaration for the current variable. */ | |
2476 | else | |
2477 | return match_old_style_init (name); | |
294fbfc8 TS |
2478 | } |
2479 | ||
6de9cd9a DN |
2480 | /* The double colon must be present in order to have initializers. |
2481 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2482 | if (colon_seen) | |
2483 | { | |
2484 | if (gfc_match (" =>") == MATCH_YES) | |
2485 | { | |
6de9cd9a DN |
2486 | if (!current_attr.pointer) |
2487 | { | |
2488 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2489 | m = MATCH_ERROR; | |
2490 | goto cleanup; | |
2491 | } | |
2492 | ||
80f95228 | 2493 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2494 | if (m != MATCH_YES) |
2495 | goto cleanup; | |
6de9cd9a DN |
2496 | } |
2497 | else if (gfc_match_char ('=') == MATCH_YES) | |
2498 | { | |
2499 | if (current_attr.pointer) | |
2500 | { | |
a4d9b221 TB |
2501 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2502 | "not %<=%>"); | |
6de9cd9a DN |
2503 | m = MATCH_ERROR; |
2504 | goto cleanup; | |
2505 | } | |
2506 | ||
2507 | m = gfc_match_init_expr (&initializer); | |
2508 | if (m == MATCH_NO) | |
2509 | { | |
2510 | gfc_error ("Expected an initialization expression at %C"); | |
2511 | m = MATCH_ERROR; | |
2512 | } | |
2513 | ||
ade20620 | 2514 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2515 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2516 | { |
636dff67 SK |
2517 | gfc_error ("Initialization of variable at %C is not allowed in " |
2518 | "a PURE procedure"); | |
6de9cd9a DN |
2519 | m = MATCH_ERROR; |
2520 | } | |
2521 | ||
ccd7751b | 2522 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2523 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2524 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2525 | ||
6de9cd9a DN |
2526 | if (m != MATCH_YES) |
2527 | goto cleanup; | |
2528 | } | |
cb44ab82 VL |
2529 | } |
2530 | ||
5046aff5 | 2531 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2532 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2533 | { |
636dff67 SK |
2534 | gfc_error ("Initialization of allocatable component at %C is not " |
2535 | "allowed"); | |
5046aff5 PT |
2536 | m = MATCH_ERROR; |
2537 | goto cleanup; | |
2538 | } | |
2539 | ||
18a4e7e3 PT |
2540 | if (gfc_current_state () == COMP_DERIVED |
2541 | && gfc_current_block ()->attr.pdt_template) | |
2542 | { | |
2543 | gfc_symbol *param; | |
2544 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2545 | 0, ¶m); | |
2546 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2547 | { | |
2548 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2549 | "not appear in the type parameter list at %L", | |
2550 | &gfc_current_block ()->declared_at); | |
2551 | m = MATCH_ERROR; | |
2552 | goto cleanup; | |
2553 | } | |
2554 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2555 | { | |
2556 | gfc_error ("The component at %C that appears in the type parameter " | |
2557 | "list at %L has neither the KIND nor LEN attribute", | |
2558 | &gfc_current_block ()->declared_at); | |
2559 | m = MATCH_ERROR; | |
2560 | goto cleanup; | |
2561 | } | |
2562 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2563 | { | |
2564 | gfc_error ("The component at %C which is a type parameter must be " | |
2565 | "a scalar"); | |
2566 | m = MATCH_ERROR; | |
2567 | goto cleanup; | |
2568 | } | |
2569 | else if (param && initializer) | |
2570 | param->value = gfc_copy_expr (initializer); | |
2571 | } | |
2572 | ||
54b4ba60 | 2573 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2574 | NULL here, because we sometimes also need to check if a |
2575 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2576 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2577 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2578 | else | |
54b4ba60 | 2579 | { |
5046aff5 | 2580 | if (current_ts.type == BT_DERIVED |
636dff67 | 2581 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2582 | initializer = gfc_default_initializer (¤t_ts); |
2583 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2584 | |
2585 | /* If we match a nested structure definition we expect to see the | |
2586 | * body even if the variable declarations blow up, so we need to keep | |
2587 | * the structure declaration around. */ | |
2588 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2589 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2590 | } |
6de9cd9a | 2591 | |
524af0d6 | 2592 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2593 | |
2594 | cleanup: | |
2595 | /* Free stuff up and return. */ | |
2596 | gfc_free_expr (initializer); | |
2597 | gfc_free_array_spec (as); | |
2598 | ||
2599 | return m; | |
2600 | } | |
2601 | ||
2602 | ||
b2b81a3f BM |
2603 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2604 | This assumes that the byte size is equal to the kind number for | |
2605 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2606 | |
2607 | match | |
636dff67 | 2608 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2609 | { |
2610 | match m; | |
5cf54585 | 2611 | int original_kind; |
6de9cd9a DN |
2612 | |
2613 | if (gfc_match_char ('*') != MATCH_YES) | |
2614 | return MATCH_NO; | |
2615 | ||
5cf54585 | 2616 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2617 | if (m != MATCH_YES) |
2618 | return MATCH_ERROR; | |
2619 | ||
e45b3c75 ES |
2620 | original_kind = ts->kind; |
2621 | ||
6de9cd9a | 2622 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2623 | if (ts->type == BT_COMPLEX) |
2624 | { | |
2625 | if (ts->kind % 2) | |
636dff67 SK |
2626 | { |
2627 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2628 | gfc_basic_typename (ts->type), original_kind); | |
2629 | return MATCH_ERROR; | |
2630 | } | |
e45b3c75 | 2631 | ts->kind /= 2; |
f4347334 ZG |
2632 | |
2633 | } | |
2634 | ||
203c7ebf | 2635 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2636 | ts->kind = 8; |
2637 | ||
2638 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2639 | { | |
2640 | if (ts->kind == 4) | |
2641 | { | |
203c7ebf | 2642 | if (flag_real4_kind == 8) |
f4347334 | 2643 | ts->kind = 8; |
203c7ebf | 2644 | if (flag_real4_kind == 10) |
f4347334 | 2645 | ts->kind = 10; |
203c7ebf | 2646 | if (flag_real4_kind == 16) |
f4347334 ZG |
2647 | ts->kind = 16; |
2648 | } | |
2649 | ||
2650 | if (ts->kind == 8) | |
2651 | { | |
203c7ebf | 2652 | if (flag_real8_kind == 4) |
f4347334 | 2653 | ts->kind = 4; |
203c7ebf | 2654 | if (flag_real8_kind == 10) |
f4347334 | 2655 | ts->kind = 10; |
203c7ebf | 2656 | if (flag_real8_kind == 16) |
f4347334 ZG |
2657 | ts->kind = 16; |
2658 | } | |
e45b3c75 | 2659 | } |
6de9cd9a | 2660 | |
e7a2d5fb | 2661 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2662 | { |
e45b3c75 | 2663 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2664 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2665 | return MATCH_ERROR; |
2666 | } | |
2667 | ||
70112e2a PT |
2668 | if (!gfc_notify_std (GFC_STD_GNU, |
2669 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2670 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2671 | return MATCH_ERROR; |
2672 | ||
6de9cd9a DN |
2673 | return MATCH_YES; |
2674 | } | |
2675 | ||
2676 | ||
2677 | /* Match a kind specification. Since kinds are generally optional, we | |
2678 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2679 | string is found, then we know we have an error. */ | |
2680 | ||
2681 | match | |
e2d29968 | 2682 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2683 | { |
e2d29968 | 2684 | locus where, loc; |
6de9cd9a DN |
2685 | gfc_expr *e; |
2686 | match m, n; | |
96ee3a4a | 2687 | char c; |
6de9cd9a DN |
2688 | |
2689 | m = MATCH_NO; | |
e2d29968 | 2690 | n = MATCH_YES; |
6de9cd9a | 2691 | e = NULL; |
5bab4c96 | 2692 | saved_kind_expr = NULL; |
6de9cd9a | 2693 | |
e2d29968 PT |
2694 | where = loc = gfc_current_locus; |
2695 | ||
2696 | if (kind_expr_only) | |
2697 | goto kind_expr; | |
6de9cd9a DN |
2698 | |
2699 | if (gfc_match_char ('(') == MATCH_NO) | |
2700 | return MATCH_NO; | |
2701 | ||
2702 | /* Also gobbles optional text. */ | |
2703 | if (gfc_match (" kind = ") == MATCH_YES) | |
2704 | m = MATCH_ERROR; | |
2705 | ||
e2d29968 PT |
2706 | loc = gfc_current_locus; |
2707 | ||
2708 | kind_expr: | |
5bab4c96 | 2709 | |
6de9cd9a | 2710 | n = gfc_match_init_expr (&e); |
e2d29968 | 2711 | |
5bab4c96 PT |
2712 | if (gfc_derived_parameter_expr (e)) |
2713 | { | |
2714 | ts->kind = 0; | |
2715 | saved_kind_expr = gfc_copy_expr (e); | |
2716 | goto close_brackets; | |
2717 | } | |
2718 | ||
6de9cd9a | 2719 | if (n != MATCH_YES) |
e2d29968 | 2720 | { |
1c8bcdf7 | 2721 | if (gfc_matching_function) |
e2d29968 | 2722 | { |
f5acf0f2 | 2723 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2724 | imported parameters and try again after the specification |
2725 | expressions..... */ | |
e2d29968 PT |
2726 | if (gfc_match_char (')') != MATCH_YES) |
2727 | { | |
2728 | gfc_error ("Missing right parenthesis at %C"); | |
2729 | m = MATCH_ERROR; | |
2730 | goto no_match; | |
2731 | } | |
2732 | ||
2733 | gfc_free_expr (e); | |
e2d29968 PT |
2734 | gfc_undo_symbols (); |
2735 | return MATCH_YES; | |
2736 | } | |
2737 | else | |
2738 | { | |
2739 | /* ....or else, the match is real. */ | |
2740 | if (n == MATCH_NO) | |
2741 | gfc_error ("Expected initialization expression at %C"); | |
2742 | if (n != MATCH_YES) | |
2743 | return MATCH_ERROR; | |
2744 | } | |
2745 | } | |
6de9cd9a DN |
2746 | |
2747 | if (e->rank != 0) | |
2748 | { | |
2749 | gfc_error ("Expected scalar initialization expression at %C"); | |
2750 | m = MATCH_ERROR; | |
2751 | goto no_match; | |
2752 | } | |
2753 | ||
51f03c6b | 2754 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 2755 | { |
6de9cd9a DN |
2756 | m = MATCH_ERROR; |
2757 | goto no_match; | |
2758 | } | |
2759 | ||
a8b3b0b6 CR |
2760 | /* Before throwing away the expression, let's see if we had a |
2761 | C interoperable kind (and store the fact). */ | |
2762 | if (e->ts.is_c_interop == 1) | |
2763 | { | |
eea58adb | 2764 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2765 | of the named constants from iso_c_binding. */ |
2766 | ts->is_c_interop = e->ts.is_iso_c; | |
2767 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
2768 | if (e->symtree) |
2769 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 2770 | } |
f5acf0f2 | 2771 | |
6de9cd9a DN |
2772 | gfc_free_expr (e); |
2773 | e = NULL; | |
2774 | ||
a8b3b0b6 CR |
2775 | /* Ignore errors to this point, if we've gotten here. This means |
2776 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2777 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2778 | { |
2779 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2780 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2781 | gfc_current_locus = where; |
2782 | return MATCH_ERROR; | |
6de9cd9a | 2783 | } |
96ee3a4a | 2784 | |
2ec855f1 TB |
2785 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2786 | if, e.g., c_double is used for COMPLEX as the standard | |
2787 | explicitly says that the kind type parameter for complex and real | |
2788 | variable is the same, i.e. c_float == c_float_complex. */ | |
2789 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2790 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2791 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2792 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2793 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2794 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2795 | |
5bab4c96 PT |
2796 | close_brackets: |
2797 | ||
96ee3a4a | 2798 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2799 | if ((c = gfc_next_ascii_char ()) != ')' |
2800 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2801 | { |
96ee3a4a TB |
2802 | if (ts->type == BT_CHARACTER) |
2803 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2804 | else | |
2805 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2806 | m = MATCH_ERROR; |
6de9cd9a | 2807 | } |
a8b3b0b6 CR |
2808 | else |
2809 | /* All tests passed. */ | |
2810 | m = MATCH_YES; | |
6de9cd9a | 2811 | |
a8b3b0b6 CR |
2812 | if(m == MATCH_ERROR) |
2813 | gfc_current_locus = where; | |
f4347334 | 2814 | |
203c7ebf | 2815 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2816 | ts->kind = 8; |
2817 | ||
2818 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2819 | { | |
2820 | if (ts->kind == 4) | |
2821 | { | |
203c7ebf | 2822 | if (flag_real4_kind == 8) |
f4347334 | 2823 | ts->kind = 8; |
203c7ebf | 2824 | if (flag_real4_kind == 10) |
f4347334 | 2825 | ts->kind = 10; |
203c7ebf | 2826 | if (flag_real4_kind == 16) |
f4347334 ZG |
2827 | ts->kind = 16; |
2828 | } | |
2829 | ||
2830 | if (ts->kind == 8) | |
2831 | { | |
203c7ebf | 2832 | if (flag_real8_kind == 4) |
f4347334 | 2833 | ts->kind = 4; |
203c7ebf | 2834 | if (flag_real8_kind == 10) |
f4347334 | 2835 | ts->kind = 10; |
203c7ebf | 2836 | if (flag_real8_kind == 16) |
f4347334 ZG |
2837 | ts->kind = 16; |
2838 | } | |
2839 | } | |
2840 | ||
a8b3b0b6 CR |
2841 | /* Return what we know from the test(s). */ |
2842 | return m; | |
6de9cd9a DN |
2843 | |
2844 | no_match: | |
2845 | gfc_free_expr (e); | |
63645982 | 2846 | gfc_current_locus = where; |
6de9cd9a DN |
2847 | return m; |
2848 | } | |
2849 | ||
2850 | ||
187de1ed FXC |
2851 | static match |
2852 | match_char_kind (int * kind, int * is_iso_c) | |
2853 | { | |
2854 | locus where; | |
2855 | gfc_expr *e; | |
2856 | match m, n; | |
51f03c6b | 2857 | bool fail; |
187de1ed FXC |
2858 | |
2859 | m = MATCH_NO; | |
2860 | e = NULL; | |
2861 | where = gfc_current_locus; | |
2862 | ||
2863 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2864 | |
1c8bcdf7 | 2865 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2866 | { |
1c8bcdf7 | 2867 | /* The expression might include use-associated or imported |
f5acf0f2 | 2868 | parameters and try again after the specification |
1c8bcdf7 | 2869 | expressions. */ |
96ee3a4a | 2870 | gfc_free_expr (e); |
96ee3a4a TB |
2871 | gfc_undo_symbols (); |
2872 | return MATCH_YES; | |
2873 | } | |
2874 | ||
187de1ed FXC |
2875 | if (n == MATCH_NO) |
2876 | gfc_error ("Expected initialization expression at %C"); | |
2877 | if (n != MATCH_YES) | |
2878 | return MATCH_ERROR; | |
2879 | ||
2880 | if (e->rank != 0) | |
2881 | { | |
2882 | gfc_error ("Expected scalar initialization expression at %C"); | |
2883 | m = MATCH_ERROR; | |
2884 | goto no_match; | |
2885 | } | |
2886 | ||
87f3a5cf PT |
2887 | if (gfc_derived_parameter_expr (e)) |
2888 | { | |
2889 | saved_kind_expr = e; | |
2890 | *kind = 0; | |
2891 | return MATCH_YES; | |
2892 | } | |
2893 | ||
51f03c6b | 2894 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 2895 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 2896 | if (fail) |
187de1ed | 2897 | { |
187de1ed FXC |
2898 | m = MATCH_ERROR; |
2899 | goto no_match; | |
2900 | } | |
2901 | ||
2902 | gfc_free_expr (e); | |
2903 | ||
2904 | /* Ignore errors to this point, if we've gotten here. This means | |
2905 | we ignore the m=MATCH_ERROR from above. */ | |
2906 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2907 | { | |
2908 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2909 | m = MATCH_ERROR; | |
2910 | } | |
2911 | else | |
2912 | /* All tests passed. */ | |
2913 | m = MATCH_YES; | |
2914 | ||
2915 | if (m == MATCH_ERROR) | |
2916 | gfc_current_locus = where; | |
f5acf0f2 | 2917 | |
187de1ed FXC |
2918 | /* Return what we know from the test(s). */ |
2919 | return m; | |
2920 | ||
2921 | no_match: | |
2922 | gfc_free_expr (e); | |
2923 | gfc_current_locus = where; | |
2924 | return m; | |
2925 | } | |
2926 | ||
8234e5e0 | 2927 | |
6de9cd9a DN |
2928 | /* Match the various kind/length specifications in a CHARACTER |
2929 | declaration. We don't return MATCH_NO. */ | |
2930 | ||
8234e5e0 SK |
2931 | match |
2932 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2933 | { |
187de1ed | 2934 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2935 | gfc_charlen *cl; |
2936 | gfc_expr *len; | |
2937 | match m; | |
e69afb29 | 2938 | bool deferred; |
187de1ed | 2939 | |
6de9cd9a DN |
2940 | len = NULL; |
2941 | seen_length = 0; | |
187de1ed FXC |
2942 | kind = 0; |
2943 | is_iso_c = 0; | |
e69afb29 | 2944 | deferred = false; |
6de9cd9a DN |
2945 | |
2946 | /* Try the old-style specification first. */ | |
2947 | old_char_selector = 0; | |
2948 | ||
2767f2cc | 2949 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2950 | if (m != MATCH_NO) |
2951 | { | |
2952 | if (m == MATCH_YES) | |
2953 | old_char_selector = 1; | |
2954 | seen_length = 1; | |
2955 | goto done; | |
2956 | } | |
2957 | ||
2958 | m = gfc_match_char ('('); | |
2959 | if (m != MATCH_YES) | |
2960 | { | |
a8b3b0b6 | 2961 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2962 | goto done; |
2963 | } | |
2964 | ||
a8b3b0b6 | 2965 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2966 | if (gfc_match (" kind =") == MATCH_YES) |
2967 | { | |
187de1ed | 2968 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2969 | |
6de9cd9a DN |
2970 | if (m == MATCH_ERROR) |
2971 | goto done; | |
2972 | if (m == MATCH_NO) | |
2973 | goto syntax; | |
2974 | ||
2975 | if (gfc_match (" , len =") == MATCH_NO) | |
2976 | goto rparen; | |
2977 | ||
e69afb29 | 2978 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2979 | if (m == MATCH_NO) |
2980 | goto syntax; | |
2981 | if (m == MATCH_ERROR) | |
2982 | goto done; | |
2983 | seen_length = 1; | |
2984 | ||
2985 | goto rparen; | |
2986 | } | |
2987 | ||
66e4ab31 | 2988 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2989 | if (gfc_match (" len =") == MATCH_YES) |
2990 | { | |
e69afb29 | 2991 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2992 | if (m == MATCH_NO) |
2993 | goto syntax; | |
2994 | if (m == MATCH_ERROR) | |
2995 | goto done; | |
2996 | seen_length = 1; | |
2997 | ||
2998 | if (gfc_match_char (')') == MATCH_YES) | |
2999 | goto done; | |
3000 | ||
3001 | if (gfc_match (" , kind =") != MATCH_YES) | |
3002 | goto syntax; | |
3003 | ||
187de1ed FXC |
3004 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3005 | goto done; | |
6de9cd9a DN |
3006 | |
3007 | goto rparen; | |
3008 | } | |
3009 | ||
66e4ab31 | 3010 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3011 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3012 | if (m == MATCH_NO) |
3013 | goto syntax; | |
3014 | if (m == MATCH_ERROR) | |
3015 | goto done; | |
3016 | seen_length = 1; | |
3017 | ||
3018 | m = gfc_match_char (')'); | |
3019 | if (m == MATCH_YES) | |
3020 | goto done; | |
3021 | ||
3022 | if (gfc_match_char (',') != MATCH_YES) | |
3023 | goto syntax; | |
3024 | ||
a8b3b0b6 | 3025 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3026 | |
187de1ed | 3027 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3028 | if (m == MATCH_ERROR) |
3029 | goto done; | |
3030 | if (m == MATCH_NO) | |
3031 | goto syntax; | |
3032 | ||
3033 | rparen: | |
3034 | /* Require a right-paren at this point. */ | |
3035 | m = gfc_match_char (')'); | |
3036 | if (m == MATCH_YES) | |
3037 | goto done; | |
3038 | ||
3039 | syntax: | |
3040 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3041 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3042 | gfc_free_expr (len); |
3043 | return m; | |
6de9cd9a DN |
3044 | |
3045 | done: | |
a99d95a2 PT |
3046 | /* Deal with character functions after USE and IMPORT statements. */ |
3047 | if (gfc_matching_function) | |
1c8bcdf7 | 3048 | { |
a99d95a2 | 3049 | gfc_free_expr (len); |
1c8bcdf7 PT |
3050 | gfc_undo_symbols (); |
3051 | return MATCH_YES; | |
3052 | } | |
3053 | ||
6de9cd9a DN |
3054 | if (m != MATCH_YES) |
3055 | { | |
3056 | gfc_free_expr (len); | |
3057 | return m; | |
3058 | } | |
3059 | ||
3060 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3061 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3062 | |
3063 | if (seen_length == 0) | |
b7e75771 | 3064 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 3065 | else |
5cd09fac | 3066 | cl->length = len; |
6de9cd9a | 3067 | |
bc21d315 | 3068 | ts->u.cl = cl; |
187de1ed | 3069 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3070 | ts->deferred = deferred; |
6de9cd9a | 3071 | |
eea58adb | 3072 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3073 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3074 | if (kind != 0) |
eea58adb | 3075 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3076 | of the named constants from iso_c_binding. */ |
3077 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3078 | else if (len != NULL) |
187de1ed FXC |
3079 | /* Here, we might have parsed something such as: character(c_char) |
3080 | In this case, the parsing code above grabs the c_char when | |
3081 | looking for the length (line 1690, roughly). it's the last | |
3082 | testcase for parsing the kind params of a character variable. | |
3083 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3084 | could be an error. |
187de1ed FXC |
3085 | To see if the user used a C interop kind, test the expr |
3086 | of the so called length, and see if it's C interoperable. */ | |
3087 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3088 | |
6de9cd9a DN |
3089 | return MATCH_YES; |
3090 | } | |
3091 | ||
3092 | ||
f6288c24 FR |
3093 | /* Matches a RECORD declaration. */ |
3094 | ||
3095 | static match | |
e79e6763 | 3096 | match_record_decl (char *name) |
f6288c24 FR |
3097 | { |
3098 | locus old_loc; | |
3099 | old_loc = gfc_current_locus; | |
e79e6763 | 3100 | match m; |
f6288c24 | 3101 | |
e79e6763 FR |
3102 | m = gfc_match (" record /"); |
3103 | if (m == MATCH_YES) | |
f6288c24 | 3104 | { |
f6d17ecd | 3105 | if (!flag_dec_structure) |
f6288c24 FR |
3106 | { |
3107 | gfc_current_locus = old_loc; | |
3108 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3109 | "-fdec-structure"); | |
3110 | return MATCH_ERROR; | |
3111 | } | |
e79e6763 FR |
3112 | m = gfc_match (" %n/", name); |
3113 | if (m == MATCH_YES) | |
3114 | return MATCH_YES; | |
f6288c24 FR |
3115 | } |
3116 | ||
e79e6763 | 3117 | gfc_current_locus = old_loc; |
f6d17ecd | 3118 | if (flag_dec_structure |
e79e6763 FR |
3119 | && (gfc_match (" record% ") == MATCH_YES |
3120 | || gfc_match (" record%t") == MATCH_YES)) | |
3121 | gfc_error ("Structure name expected after RECORD at %C"); | |
3122 | if (m == MATCH_NO) | |
f6288c24 | 3123 | return MATCH_NO; |
e79e6763 FR |
3124 | |
3125 | return MATCH_ERROR; | |
f6288c24 FR |
3126 | } |
3127 | ||
5bab4c96 PT |
3128 | |
3129 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3130 | of expressions to substitute into the possibly parameterized expression | |
3131 | 'e'. Using a list is inefficient but should not be too bad since the | |
3132 | number of type parameters is not likely to be large. */ | |
3133 | static bool | |
3134 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3135 | int* f) | |
3136 | { | |
3137 | gfc_actual_arglist *param; | |
3138 | gfc_expr *copy; | |
3139 | ||
3140 | if (e->expr_type != EXPR_VARIABLE) | |
3141 | return false; | |
3142 | ||
3143 | gcc_assert (e->symtree); | |
3144 | if (e->symtree->n.sym->attr.pdt_kind | |
3145 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3146 | { | |
3147 | for (param = type_param_spec_list; param; param = param->next) | |
3148 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3149 | break; | |
3150 | ||
3151 | if (param) | |
3152 | { | |
3153 | copy = gfc_copy_expr (param->expr); | |
3154 | *e = *copy; | |
3155 | free (copy); | |
3156 | } | |
3157 | } | |
3158 | ||
3159 | return false; | |
3160 | } | |
3161 | ||
3162 | ||
3163 | bool | |
3164 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3165 | { | |
3166 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3167 | } | |
3168 | ||
3169 | ||
3170 | bool | |
3171 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3172 | { | |
3173 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3174 | type_param_spec_list = param_list; | |
3175 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3176 | type_param_spec_list = NULL; | |
3177 | type_param_spec_list = old_param_spec_list; | |
3178 | } | |
3179 | ||
3180 | /* Determines the instance of a parameterized derived type to be used by | |
3181 | matching determining the values of the kind parameters and using them | |
3182 | in the name of the instance. If the instance exists, it is used, otherwise | |
3183 | a new derived type is created. */ | |
3184 | match | |
3185 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3186 | gfc_actual_arglist **ext_param_list) | |
3187 | { | |
3188 | /* The PDT template symbol. */ | |
3189 | gfc_symbol *pdt = *sym; | |
3190 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3191 | gfc_symbol *param; | |
3192 | /* The hoped for instance of the PDT. */ | |
3193 | gfc_symbol *instance; | |
3194 | /* The list of parameters appearing in the PDT declaration. */ | |
3195 | gfc_formal_arglist *type_param_name_list; | |
3196 | /* Used to store the parameter specification list during recursive calls. */ | |
3197 | gfc_actual_arglist *old_param_spec_list; | |
3198 | /* Pointers to the parameter specification being used. */ | |
3199 | gfc_actual_arglist *actual_param; | |
3200 | gfc_actual_arglist *tail = NULL; | |
3201 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3202 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3203 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3204 | ||
3205 | bool name_seen = (param_list == NULL); | |
3206 | bool assumed_seen = false; | |
3207 | bool deferred_seen = false; | |
3208 | bool spec_error = false; | |
3209 | int kind_value, i; | |
3210 | gfc_expr *kind_expr; | |
3211 | gfc_component *c1, *c2; | |
3212 | match m; | |
3213 | ||
3214 | type_param_spec_list = NULL; | |
3215 | ||
3216 | type_param_name_list = pdt->formal; | |
3217 | actual_param = param_list; | |
3218 | sprintf (name, "Pdt%s", pdt->name); | |
3219 | ||
3220 | /* Run through the parameter name list and pick up the actual | |
3221 | parameter values or use the default values in the PDT declaration. */ | |
3222 | for (; type_param_name_list; | |
3223 | type_param_name_list = type_param_name_list->next) | |
3224 | { | |
3225 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3226 | { | |
3227 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3228 | spec_error = deferred_seen; | |
3229 | else | |
3230 | spec_error = assumed_seen; | |
3231 | ||
3232 | if (spec_error) | |
3233 | { | |
3234 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3235 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3236 | goto error_return; |
5bab4c96 PT |
3237 | } |
3238 | } | |
3239 | ||
3240 | if (actual_param && actual_param->name) | |
3241 | name_seen = true; | |
3242 | param = type_param_name_list->sym; | |
3243 | ||
18a4e7e3 PT |
3244 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
3245 | if (!pdt->attr.use_assoc && !c1) | |
3246 | { | |
3247 | gfc_error ("The type parameter name list at %L contains a parameter " | |
3248 | "'%qs' , which is not declared as a component of the type", | |
3249 | &pdt->declared_at, param->name); | |
3250 | goto error_return; | |
3251 | } | |
3252 | ||
5bab4c96 PT |
3253 | kind_expr = NULL; |
3254 | if (!name_seen) | |
3255 | { | |
18a4e7e3 PT |
3256 | if (!actual_param && !(c1 && c1->initializer)) |
3257 | { | |
3258 | gfc_error ("The type parameter spec list at %C does not contain " | |
3259 | "enough parameter expressions"); | |
3260 | goto error_return; | |
3261 | } | |
3262 | else if (!actual_param && c1 && c1->initializer) | |
3263 | kind_expr = gfc_copy_expr (c1->initializer); | |
3264 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3265 | kind_expr = gfc_copy_expr (actual_param->expr); |
3266 | } | |
3267 | else | |
3268 | { | |
3269 | actual_param = param_list; | |
3270 | for (;actual_param; actual_param = actual_param->next) | |
3271 | if (actual_param->name | |
3272 | && strcmp (actual_param->name, param->name) == 0) | |
3273 | break; | |
3274 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3275 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3276 | else | |
3277 | { | |
62d3c075 PT |
3278 | if (c1->initializer) |
3279 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3280 | else if (!(actual_param && param->attr.pdt_len)) |
3281 | { | |
3282 | gfc_error ("The derived parameter '%qs' at %C does not " | |
3283 | "have a default value", param->name); | |
18a4e7e3 | 3284 | goto error_return; |
5bab4c96 PT |
3285 | } |
3286 | } | |
3287 | } | |
3288 | ||
3289 | /* Store the current parameter expressions in a temporary actual | |
3290 | arglist 'list' so that they can be substituted in the corresponding | |
3291 | expressions in the PDT instance. */ | |
3292 | if (type_param_spec_list == NULL) | |
3293 | { | |
3294 | type_param_spec_list = gfc_get_actual_arglist (); | |
3295 | tail = type_param_spec_list; | |
3296 | } | |
3297 | else | |
3298 | { | |
3299 | tail->next = gfc_get_actual_arglist (); | |
3300 | tail = tail->next; | |
3301 | } | |
3302 | tail->name = param->name; | |
3303 | ||
3304 | if (kind_expr) | |
3305 | { | |
87f3a5cf PT |
3306 | /* Try simplification even for LEN expressions. */ |
3307 | gfc_resolve_expr (kind_expr); | |
3308 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3309 | /* Variable expressions seem to default to BT_PROCEDURE. |
3310 | TODO find out why this is and fix it. */ | |
3311 | if (kind_expr->ts.type != BT_INTEGER | |
3312 | && kind_expr->ts.type != BT_PROCEDURE) | |
3313 | { | |
3314 | gfc_error ("The parameter expression at %C must be of " | |
3315 | "INTEGER type and not %s type", | |
3316 | gfc_basic_typename (kind_expr->ts.type)); | |
3317 | goto error_return; | |
3318 | } | |
3319 | ||
5bab4c96 | 3320 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3321 | } |
3322 | ||
3323 | if (actual_param) | |
3324 | tail->spec_type = actual_param->spec_type; | |
3325 | ||
3326 | if (!param->attr.pdt_kind) | |
3327 | { | |
18a4e7e3 | 3328 | if (!name_seen && actual_param) |
5bab4c96 PT |
3329 | actual_param = actual_param->next; |
3330 | if (kind_expr) | |
3331 | { | |
3332 | gfc_free_expr (kind_expr); | |
3333 | kind_expr = NULL; | |
3334 | } | |
3335 | continue; | |
3336 | } | |
3337 | ||
3338 | if (actual_param | |
3339 | && (actual_param->spec_type == SPEC_ASSUMED | |
3340 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3341 | { | |
3342 | gfc_error ("The KIND parameter '%qs' at %C cannot either be " | |
3343 | "ASSUMED or DEFERRED", param->name); | |
18a4e7e3 | 3344 | goto error_return; |
5bab4c96 PT |
3345 | } |
3346 | ||
3347 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3348 | { | |
3349 | gfc_error ("The value for the KIND parameter '%qs' at %C does not " | |
3350 | "reduce to a constant expression", param->name); | |
18a4e7e3 | 3351 | goto error_return; |
5bab4c96 PT |
3352 | } |
3353 | ||
3354 | gfc_extract_int (kind_expr, &kind_value); | |
3355 | sprintf (name, "%s_%d", name, kind_value); | |
3356 | ||
3357 | if (!name_seen && actual_param) | |
3358 | actual_param = actual_param->next; | |
3359 | gfc_free_expr (kind_expr); | |
3360 | } | |
3361 | ||
18a4e7e3 PT |
3362 | if (!name_seen && actual_param) |
3363 | { | |
3364 | gfc_error ("The type parameter spec list at %C contains too many " | |
3365 | "parameter expressions"); | |
3366 | goto error_return; | |
3367 | } | |
3368 | ||
5bab4c96 PT |
3369 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3370 | build it, using 'pdt' as a template. */ | |
3371 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3372 | { | |
3373 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3374 | goto error_return; |
5bab4c96 PT |
3375 | } |
3376 | ||
3377 | m = MATCH_YES; | |
3378 | ||
3379 | if (instance->attr.flavor == FL_DERIVED | |
3380 | && instance->attr.pdt_type) | |
3381 | { | |
3382 | instance->refs++; | |
3383 | if (ext_param_list) | |
3384 | *ext_param_list = type_param_spec_list; | |
3385 | *sym = instance; | |
3386 | gfc_commit_symbols (); | |
3387 | return m; | |
3388 | } | |
3389 | ||
3390 | /* Start building the new instance of the parameterized type. */ | |
3391 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3392 | instance->attr.pdt_template = 0; | |
3393 | instance->attr.pdt_type = 1; | |
3394 | instance->declared_at = gfc_current_locus; | |
3395 | ||
3396 | /* Add the components, replacing the parameters in all expressions | |
3397 | with the expressions for their values in 'type_param_spec_list'. */ | |
3398 | c1 = pdt->components; | |
3399 | tail = type_param_spec_list; | |
3400 | for (; c1; c1 = c1->next) | |
3401 | { | |
3402 | gfc_add_component (instance, c1->name, &c2); | |
3403 | c2->ts = c1->ts; | |
3404 | c2->attr = c1->attr; | |
3405 | ||
3406 | /* Deal with type extension by recursively calling this function | |
3407 | to obtain the instance of the extended type. */ | |
3408 | if (gfc_current_state () != COMP_DERIVED | |
3409 | && c1 == pdt->components | |
3410 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3411 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3412 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3413 | { | |
3414 | gfc_formal_arglist *f; | |
3415 | ||
3416 | old_param_spec_list = type_param_spec_list; | |
3417 | ||
3418 | /* Obtain a spec list appropriate to the extended type..*/ | |
3419 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3420 | type_param_spec_list = actual_param; | |
3421 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3422 | actual_param = actual_param->next; | |
3423 | if (actual_param) | |
3424 | { | |
3425 | gfc_free_actual_arglist (actual_param->next); | |
3426 | actual_param->next = NULL; | |
3427 | } | |
3428 | ||
3429 | /* Now obtain the PDT instance for the extended type. */ | |
3430 | c2->param_list = type_param_spec_list; | |
3431 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3432 | NULL); | |
3433 | type_param_spec_list = old_param_spec_list; | |
3434 | ||
3435 | c2->ts.u.derived->refs++; | |
3436 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3437 | ||
3438 | /* Set extension level. */ | |
3439 | if (c2->ts.u.derived->attr.extension == 255) | |
3440 | { | |
3441 | /* Since the extension field is 8 bit wide, we can only have | |
3442 | up to 255 extension levels. */ | |
3443 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3444 | c2->ts.u.derived->name, | |
3445 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3446 | goto error_return; |
5bab4c96 PT |
3447 | } |
3448 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3449 | ||
3450 | /* Advance the position in the spec list by the number of | |
3451 | parameters in the extended type. */ | |
3452 | tail = type_param_spec_list; | |
3453 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3454 | tail = tail->next; | |
3455 | ||
3456 | continue; | |
3457 | } | |
3458 | ||
3459 | /* Set the component kind using the parameterized expression. */ | |
3460 | if (c1->ts.kind == 0 && c1->kind_expr != NULL) | |
3461 | { | |
3462 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3463 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3464 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3465 | gfc_extract_int (e, &c2->ts.kind); |
3466 | gfc_free_expr (e); | |
18a4e7e3 PT |
3467 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3468 | { | |
3469 | gfc_error ("Kind %d not supported for type %s at %C", | |
3470 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3471 | goto error_return; | |
3472 | } | |
5bab4c96 PT |
3473 | } |
3474 | ||
3475 | /* Similarly, set the string length if parameterized. */ | |
3476 | if (c1->ts.type == BT_CHARACTER | |
3477 | && c1->ts.u.cl->length | |
3478 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3479 | { | |
3480 | gfc_expr *e; | |
3481 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3482 | gfc_insert_kind_parameter_exprs (e); | |
3483 | gfc_simplify_expr (e, 1); | |
3484 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3485 | c2->ts.u.cl->length = e; | |
3486 | c2->attr.pdt_string = 1; | |
3487 | } | |
3488 | ||
3489 | /* Set up either the KIND/LEN initializer, if constant, | |
3490 | or the parameterized expression. Use the template | |
3491 | initializer if one is not already set in this instance. */ | |
3492 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3493 | { | |
3494 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3495 | c2->initializer = gfc_copy_expr (tail->expr); | |
3496 | else if (tail && tail->expr) | |
3497 | { | |
3498 | c2->param_list = gfc_get_actual_arglist (); | |
3499 | c2->param_list->name = tail->name; | |
3500 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3501 | c2->param_list->next = NULL; | |
3502 | } | |
3503 | ||
3504 | if (!c2->initializer && c1->initializer) | |
3505 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3506 | ||
3507 | tail = tail->next; | |
3508 | } | |
3509 | ||
3510 | /* Copy the array spec. */ | |
3511 | c2->as = gfc_copy_array_spec (c1->as); | |
3512 | if (c1->ts.type == BT_CLASS) | |
3513 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3514 | ||
3515 | /* Determine if an array spec is parameterized. If so, substitute | |
3516 | in the parameter expressions for the bounds and set the pdt_array | |
3517 | attribute. Notice that this attribute must be unconditionally set | |
3518 | if this is an array of parameterized character length. */ | |
3519 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3520 | { | |
3521 | bool pdt_array = false; | |
3522 | ||
3523 | /* Are the bounds of the array parameterized? */ | |
3524 | for (i = 0; i < c1->as->rank; i++) | |
3525 | { | |
3526 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3527 | pdt_array = true; | |
3528 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3529 | pdt_array = true; | |
3530 | } | |
3531 | ||
3532 | /* If they are, free the expressions for the bounds and | |
3533 | replace them with the template expressions with substitute | |
3534 | values. */ | |
3535 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3536 | { | |
3537 | gfc_expr *e; | |
3538 | e = gfc_copy_expr (c1->as->lower[i]); | |
3539 | gfc_insert_kind_parameter_exprs (e); | |
3540 | gfc_simplify_expr (e, 1); | |
3541 | gfc_free_expr (c2->as->lower[i]); | |
3542 | c2->as->lower[i] = e; | |
3543 | e = gfc_copy_expr (c1->as->upper[i]); | |
3544 | gfc_insert_kind_parameter_exprs (e); | |
3545 | gfc_simplify_expr (e, 1); | |
3546 | gfc_free_expr (c2->as->upper[i]); | |
3547 | c2->as->upper[i] = e; | |
3548 | } | |
3549 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
3550 | } | |
3551 | ||
3552 | /* Recurse into this function for PDT components. */ | |
3553 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3554 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3555 | { | |
3556 | gfc_actual_arglist *params; | |
3557 | /* The component in the template has a list of specification | |
3558 | expressions derived from its declaration. */ | |
3559 | params = gfc_copy_actual_arglist (c1->param_list); | |
3560 | actual_param = params; | |
3561 | /* Substitute the template parameters with the expressions | |
3562 | from the specification list. */ | |
3563 | for (;actual_param; actual_param = actual_param->next) | |
3564 | gfc_insert_parameter_exprs (actual_param->expr, | |
3565 | type_param_spec_list); | |
3566 | ||
3567 | /* Now obtain the PDT instance for the component. */ | |
3568 | old_param_spec_list = type_param_spec_list; | |
3569 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3570 | type_param_spec_list = old_param_spec_list; | |
3571 | ||
3572 | c2->param_list = params; | |
2fcd5884 PT |
3573 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3574 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3575 | ||
3576 | if (c2->attr.allocatable) | |
3577 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3578 | } |
3579 | } | |
3580 | ||
3581 | gfc_commit_symbol (instance); | |
3582 | if (ext_param_list) | |
3583 | *ext_param_list = type_param_spec_list; | |
3584 | *sym = instance; | |
3585 | return m; | |
18a4e7e3 PT |
3586 | |
3587 | error_return: | |
3588 | gfc_free_actual_arglist (type_param_spec_list); | |
3589 | return MATCH_ERROR; | |
5bab4c96 PT |
3590 | } |
3591 | ||
3592 | ||
e74f1cc8 JW |
3593 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3594 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3595 | IMPLICIT statements. |
3596 | ||
d51347f9 | 3597 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3598 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3599 | statement correctly. */ |
3600 | ||
e2d29968 | 3601 | match |
e74f1cc8 | 3602 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3603 | { |
3604 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3605 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3606 | match m; |
8fc541d3 | 3607 | char c; |
0fb56814 | 3608 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3609 | const char *dt_name; |
6de9cd9a | 3610 | |
5bab4c96 PT |
3611 | decl_type_param_list = NULL; |
3612 | ||
1c8bcdf7 PT |
3613 | /* A belt and braces check that the typespec is correctly being treated |
3614 | as a deferred characteristic association. */ | |
3615 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
3616 | && (gfc_current_block ()->result->ts.kind == -1) |
3617 | && (ts->kind == -1); | |
6de9cd9a | 3618 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
3619 | if (seen_deferred_kind) |
3620 | ts->kind = -1; | |
6de9cd9a | 3621 | |
a8b3b0b6 | 3622 | /* Clear the current binding label, in case one is given. */ |
62603fae | 3623 | curr_binding_label = NULL; |
a8b3b0b6 | 3624 | |
5f700e6d AL |
3625 | if (gfc_match (" byte") == MATCH_YES) |
3626 | { | |
524af0d6 | 3627 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
3628 | return MATCH_ERROR; |
3629 | ||
3630 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3631 | { | |
3632 | gfc_error ("BYTE type used at %C " | |
3633 | "is not available on the target machine"); | |
3634 | return MATCH_ERROR; | |
3635 | } | |
d51347f9 | 3636 | |
5f700e6d AL |
3637 | ts->type = BT_INTEGER; |
3638 | ts->kind = 1; | |
3639 | return MATCH_YES; | |
3640 | } | |
3641 | ||
0fb56814 | 3642 | |
45a69325 | 3643 | m = gfc_match (" type ("); |
0fb56814 | 3644 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3645 | if (matched_type) |
3646 | { | |
3647 | gfc_gobble_whitespace (); | |
3648 | if (gfc_peek_ascii_char () == '*') | |
3649 | { | |
3650 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3651 | return m; | |
f6288c24 | 3652 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3653 | { |
3654 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3655 | return MATCH_ERROR; | |
3656 | } | |
524af0d6 JB |
3657 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
3658 | "at %C")) | |
45a69325 TB |
3659 | return MATCH_ERROR; |
3660 | ts->type = BT_ASSUMED; | |
3661 | return MATCH_YES; | |
3662 | } | |
3663 | ||
3664 | m = gfc_match ("%n", name); | |
3665 | matched_type = (m == MATCH_YES); | |
3666 | } | |
3667 | ||
0fb56814 TB |
3668 | if ((matched_type && strcmp ("integer", name) == 0) |
3669 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3670 | { |
3671 | ts->type = BT_INTEGER; | |
9d64df18 | 3672 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3673 | goto get_kind; |
3674 | } | |
3675 | ||
0fb56814 TB |
3676 | if ((matched_type && strcmp ("character", name) == 0) |
3677 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 3678 | { |
0fb56814 | 3679 | if (matched_type |
524af0d6 JB |
3680 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3681 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3682 | return MATCH_ERROR; |
3683 | ||
6de9cd9a | 3684 | ts->type = BT_CHARACTER; |
e5ddaa24 | 3685 | if (implicit_flag == 0) |
0fb56814 | 3686 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 3687 | else |
0fb56814 TB |
3688 | m = MATCH_YES; |
3689 | ||
3690 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3691 | m = MATCH_ERROR; | |
3692 | ||
3693 | return m; | |
6de9cd9a DN |
3694 | } |
3695 | ||
0fb56814 TB |
3696 | if ((matched_type && strcmp ("real", name) == 0) |
3697 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
3698 | { |
3699 | ts->type = BT_REAL; | |
9d64df18 | 3700 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
3701 | goto get_kind; |
3702 | } | |
3703 | ||
0fb56814 TB |
3704 | if ((matched_type |
3705 | && (strcmp ("doubleprecision", name) == 0 | |
3706 | || (strcmp ("double", name) == 0 | |
3707 | && gfc_match (" precision") == MATCH_YES))) | |
3708 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 3709 | { |
0fb56814 | 3710 | if (matched_type |
524af0d6 JB |
3711 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3712 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3713 | return MATCH_ERROR; |
3714 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3715 | return MATCH_ERROR; | |
3716 | ||
6de9cd9a | 3717 | ts->type = BT_REAL; |
9d64df18 | 3718 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3719 | return MATCH_YES; |
3720 | } | |
3721 | ||
0fb56814 TB |
3722 | if ((matched_type && strcmp ("complex", name) == 0) |
3723 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
3724 | { |
3725 | ts->type = BT_COMPLEX; | |
9d64df18 | 3726 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
3727 | goto get_kind; |
3728 | } | |
3729 | ||
0fb56814 TB |
3730 | if ((matched_type |
3731 | && (strcmp ("doublecomplex", name) == 0 | |
3732 | || (strcmp ("double", name) == 0 | |
3733 | && gfc_match (" complex") == MATCH_YES))) | |
3734 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 3735 | { |
524af0d6 | 3736 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
3737 | return MATCH_ERROR; |
3738 | ||
3739 | if (matched_type | |
524af0d6 JB |
3740 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3741 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3742 | return MATCH_ERROR; |
3743 | ||
3744 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
3745 | return MATCH_ERROR; |
3746 | ||
6de9cd9a | 3747 | ts->type = BT_COMPLEX; |
9d64df18 | 3748 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3749 | return MATCH_YES; |
3750 | } | |
3751 | ||
0fb56814 TB |
3752 | if ((matched_type && strcmp ("logical", name) == 0) |
3753 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
3754 | { |
3755 | ts->type = BT_LOGICAL; | |
9d64df18 | 3756 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
3757 | goto get_kind; |
3758 | } | |
3759 | ||
0fb56814 | 3760 | if (matched_type) |
5bab4c96 PT |
3761 | { |
3762 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
3763 | if (m == MATCH_ERROR) | |
3764 | return m; | |
3765 | ||
0fb56814 | 3766 | m = gfc_match_char (')'); |
5bab4c96 | 3767 | } |
0fb56814 | 3768 | |
f6288c24 FR |
3769 | if (m != MATCH_YES) |
3770 | m = match_record_decl (name); | |
3771 | ||
3772 | if (matched_type || m == MATCH_YES) | |
3773 | { | |
3774 | ts->type = BT_DERIVED; | |
3775 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3776 | * don't need all the extra derived-type stuff for structures. */ | |
3777 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
3778 | { | |
2f029c08 | 3779 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
3780 | return MATCH_ERROR; |
3781 | } | |
5bab4c96 PT |
3782 | |
3783 | if (sym && sym->attr.flavor == FL_DERIVED | |
3784 | && sym->attr.pdt_template | |
3785 | && gfc_current_state () != COMP_DERIVED) | |
3786 | { | |
3787 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
3788 | if (m != MATCH_YES) | |
3789 | return m; | |
3790 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
3791 | ts->u.derived = sym; | |
3792 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
3793 | } | |
3794 | ||
f6288c24 FR |
3795 | if (sym && sym->attr.flavor == FL_STRUCT) |
3796 | { | |
3797 | ts->u.derived = sym; | |
3798 | return MATCH_YES; | |
3799 | } | |
3800 | /* Actually a derived type. */ | |
3801 | } | |
3802 | ||
cf2b3c22 | 3803 | else |
727e8544 | 3804 | { |
f6288c24 | 3805 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 3806 | structure declaration. */ |
f6d17ecd | 3807 | if (flag_dec_structure |
e79e6763 FR |
3808 | && (gfc_current_state () == COMP_STRUCTURE |
3809 | || gfc_current_state () == COMP_MAP)) | |
3810 | { | |
3811 | m = gfc_match (" structure"); | |
3812 | if (m == MATCH_YES) | |
3813 | { | |
3814 | m = gfc_match_structure_decl (); | |
3815 | if (m == MATCH_YES) | |
3816 | { | |
3817 | /* gfc_new_block is updated by match_structure_decl. */ | |
3818 | ts->type = BT_DERIVED; | |
3819 | ts->u.derived = gfc_new_block; | |
3820 | return MATCH_YES; | |
3821 | } | |
3822 | } | |
3823 | if (m == MATCH_ERROR) | |
3824 | return MATCH_ERROR; | |
3825 | } | |
f6288c24 | 3826 | |
528622fd JW |
3827 | /* Match CLASS declarations. */ |
3828 | m = gfc_match (" class ( * )"); | |
3829 | if (m == MATCH_ERROR) | |
3830 | return MATCH_ERROR; | |
3831 | else if (m == MATCH_YES) | |
3832 | { | |
8b704316 PT |
3833 | gfc_symbol *upe; |
3834 | gfc_symtree *st; | |
3835 | ts->type = BT_CLASS; | |
f5acf0f2 | 3836 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
3837 | if (upe == NULL) |
3838 | { | |
f5acf0f2 PT |
3839 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
3840 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
3841 | st->n.sym = upe; |
3842 | gfc_set_sym_referenced (upe); | |
3843 | upe->refs++; | |
3844 | upe->ts.type = BT_VOID; | |
3845 | upe->attr.unlimited_polymorphic = 1; | |
3846 | /* This is essential to force the construction of | |
3847 | unlimited polymorphic component class containers. */ | |
3848 | upe->attr.zero_comp = 1; | |
70112e2a | 3849 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 3850 | &gfc_current_locus)) |
b93d8a3f JW |
3851 | return MATCH_ERROR; |
3852 | } | |
8b704316 PT |
3853 | else |
3854 | { | |
b93d8a3f | 3855 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
3856 | st->n.sym = upe; |
3857 | upe->refs++; | |
3858 | } | |
3859 | ts->u.derived = upe; | |
3860 | return m; | |
3861 | } | |
528622fd | 3862 | |
5bab4c96 PT |
3863 | m = gfc_match (" class ("); |
3864 | ||
3865 | if (m == MATCH_YES) | |
3866 | m = gfc_match ("%n", name); | |
3867 | else | |
3868 | return m; | |
3869 | ||
727e8544 JW |
3870 | if (m != MATCH_YES) |
3871 | return m; | |
cf2b3c22 | 3872 | ts->type = BT_CLASS; |
727e8544 | 3873 | |
524af0d6 | 3874 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 3875 | return MATCH_ERROR; |
5bab4c96 PT |
3876 | |
3877 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
3878 | if (m == MATCH_ERROR) | |
3879 | return m; | |
3880 | ||
3881 | m = gfc_match_char (')'); | |
3882 | if (m != MATCH_YES) | |
3883 | return m; | |
727e8544 | 3884 | } |
6de9cd9a | 3885 | |
1c8bcdf7 PT |
3886 | /* Defer association of the derived type until the end of the |
3887 | specification block. However, if the derived type can be | |
f5acf0f2 | 3888 | found, add it to the typespec. */ |
1c8bcdf7 | 3889 | if (gfc_matching_function) |
e2d29968 | 3890 | { |
bc21d315 | 3891 | ts->u.derived = NULL; |
1c8bcdf7 PT |
3892 | if (gfc_current_state () != COMP_INTERFACE |
3893 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
3894 | { |
3895 | sym = gfc_find_dt_in_generic (sym); | |
3896 | ts->u.derived = sym; | |
3897 | } | |
e2d29968 PT |
3898 | return MATCH_YES; |
3899 | } | |
3900 | ||
3901 | /* Search for the name but allow the components to be defined later. If | |
3902 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 3903 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 3904 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
3905 | symtree with the all lower-case name contains the associated |
3906 | generic function. */ | |
f6288c24 | 3907 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 3908 | sym = NULL; |
c3f34952 TB |
3909 | dt_sym = NULL; |
3910 | if (ts->kind != -1) | |
6de9cd9a | 3911 | { |
c3f34952 TB |
3912 | gfc_get_ha_symbol (name, &sym); |
3913 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
3914 | { | |
c4100eae | 3915 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
3916 | return MATCH_ERROR; |
3917 | } | |
3918 | if (sym->generic && !dt_sym) | |
3919 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
3920 | |
3921 | /* Host associated PDTs can get confused with their constructors | |
3922 | because they ar instantiated in the template's namespace. */ | |
3923 | if (!dt_sym) | |
3924 | { | |
3925 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
3926 | { | |
3927 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
3928 | return MATCH_ERROR; | |
3929 | } | |
3930 | if (dt_sym && !dt_sym->attr.pdt_type) | |
3931 | dt_sym = NULL; | |
3932 | } | |
6de9cd9a | 3933 | } |
e2d29968 PT |
3934 | else if (ts->kind == -1) |
3935 | { | |
1c8bcdf7 PT |
3936 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
3937 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
3938 | gfc_find_symbol (name, NULL, iface, &sym); |
3939 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 3940 | { |
c4100eae | 3941 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
3942 | return MATCH_ERROR; |
3943 | } | |
c3f34952 TB |
3944 | if (sym && sym->generic && !dt_sym) |
3945 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 3946 | |
1c8bcdf7 | 3947 | ts->kind = 0; |
e2d29968 PT |
3948 | if (sym == NULL) |
3949 | return MATCH_NO; | |
3950 | } | |
6de9cd9a | 3951 | |
f6288c24 | 3952 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
3953 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
3954 | || sym->attr.subroutine) | |
3955 | { | |
fea70c99 MLI |
3956 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
3957 | "entity at %L, which has the same name", name, | |
3958 | &sym->declared_at); | |
c3f34952 TB |
3959 | return MATCH_ERROR; |
3960 | } | |
6de9cd9a | 3961 | |
5bab4c96 PT |
3962 | if (sym && sym->attr.flavor == FL_DERIVED |
3963 | && sym->attr.pdt_template | |
3964 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
3965 | { |
3966 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
3967 | if (m != MATCH_YES) | |
3968 | return m; | |
3969 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
3970 | ts->u.derived = sym; | |
3971 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
3972 | } | |
5bab4c96 | 3973 | |
44c57c2f | 3974 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 3975 | gfc_set_sym_referenced (sym); |
c3f34952 | 3976 | if (!sym->attr.generic |
524af0d6 | 3977 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
3978 | return MATCH_ERROR; |
3979 | ||
3980 | if (!sym->attr.function | |
524af0d6 | 3981 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
3982 | return MATCH_ERROR; |
3983 | ||
5bab4c96 PT |
3984 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
3985 | && dt_sym->attr.pdt_template | |
3986 | && gfc_current_state () != COMP_DERIVED) | |
3987 | { | |
3988 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
3989 | if (m != MATCH_YES) | |
3990 | return m; | |
3991 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
3992 | } | |
3993 | ||
c3f34952 TB |
3994 | if (!dt_sym) |
3995 | { | |
3996 | gfc_interface *intr, *head; | |
3997 | ||
3998 | /* Use upper case to save the actual derived-type symbol. */ | |
3999 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4000 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4001 | head = sym->generic; |
4002 | intr = gfc_get_interface (); | |
4003 | intr->sym = dt_sym; | |
4004 | intr->where = gfc_current_locus; | |
4005 | intr->next = head; | |
4006 | sym->generic = intr; | |
4007 | sym->attr.if_source = IFSRC_DECL; | |
4008 | } | |
44c57c2f MM |
4009 | else |
4010 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4011 | |
4012 | gfc_set_sym_referenced (dt_sym); | |
4013 | ||
f6288c24 | 4014 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4015 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4016 | return MATCH_ERROR; |
4017 | ||
4018 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4019 | |
4020 | return MATCH_YES; | |
4021 | ||
4022 | get_kind: | |
0fb56814 | 4023 | if (matched_type |
524af0d6 JB |
4024 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4025 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4026 | return MATCH_ERROR; |
4027 | ||
6de9cd9a DN |
4028 | /* For all types except double, derived and character, look for an |
4029 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4030 | if (implicit_flag == 1) |
0fb56814 TB |
4031 | { |
4032 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4033 | return MATCH_ERROR; | |
4034 | ||
4035 | return MATCH_YES; | |
4036 | } | |
6de9cd9a | 4037 | |
0ff0dfbf TS |
4038 | if (gfc_current_form == FORM_FREE) |
4039 | { | |
0b3624f6 SK |
4040 | c = gfc_peek_ascii_char (); |
4041 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4042 | && c != ':' && c != ',') |
0fb56814 TB |
4043 | { |
4044 | if (matched_type && c == ')') | |
4045 | { | |
4046 | gfc_next_ascii_char (); | |
4047 | return MATCH_YES; | |
4048 | } | |
4049 | return MATCH_NO; | |
4050 | } | |
0ff0dfbf TS |
4051 | } |
4052 | ||
e2d29968 | 4053 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4054 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4055 | { |
4056 | m = gfc_match_old_kind_spec (ts); | |
4057 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4058 | return MATCH_ERROR; | |
4059 | } | |
6de9cd9a | 4060 | |
0fb56814 TB |
4061 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4062 | return MATCH_ERROR; | |
4063 | ||
1c8bcdf7 PT |
4064 | /* Defer association of the KIND expression of function results |
4065 | until after USE and IMPORT statements. */ | |
4066 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4067 | || gfc_matching_function) | |
4068 | return MATCH_YES; | |
4069 | ||
6de9cd9a DN |
4070 | if (m == MATCH_NO) |
4071 | m = MATCH_YES; /* No kind specifier found. */ | |
4072 | ||
4073 | return m; | |
4074 | } | |
4075 | ||
4076 | ||
e5ddaa24 TS |
4077 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4078 | already matched in parse.c, or we would not end up here in the | |
4079 | first place. So the only thing we need to check, is if there is | |
4080 | trailing garbage. If not, the match is successful. */ | |
4081 | ||
4082 | match | |
4083 | gfc_match_implicit_none (void) | |
4084 | { | |
8b7a967e TB |
4085 | char c; |
4086 | match m; | |
4087 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4088 | bool type = false; | |
4089 | bool external = false; | |
a6c63173 TB |
4090 | locus cur_loc = gfc_current_locus; |
4091 | ||
4092 | if (gfc_current_ns->seen_implicit_none | |
4093 | || gfc_current_ns->has_implicit_none_export) | |
4094 | { | |
4095 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4096 | return MATCH_ERROR; | |
4097 | } | |
8b7a967e TB |
4098 | |
4099 | gfc_gobble_whitespace (); | |
4100 | c = gfc_peek_ascii_char (); | |
4101 | if (c == '(') | |
4102 | { | |
4103 | (void) gfc_next_ascii_char (); | |
4104 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
4105 | return MATCH_ERROR; | |
a6c63173 TB |
4106 | |
4107 | gfc_gobble_whitespace (); | |
4108 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4109 | { |
a6c63173 TB |
4110 | (void) gfc_next_ascii_char (); |
4111 | type = true; | |
4112 | } | |
4113 | else | |
4114 | for(;;) | |
4115 | { | |
4116 | m = gfc_match (" %n", name); | |
4117 | if (m != MATCH_YES) | |
4118 | return MATCH_ERROR; | |
8b7a967e | 4119 | |
a6c63173 TB |
4120 | if (strcmp (name, "type") == 0) |
4121 | type = true; | |
4122 | else if (strcmp (name, "external") == 0) | |
4123 | external = true; | |
4124 | else | |
4125 | return MATCH_ERROR; | |
8b7a967e | 4126 | |
a6c63173 TB |
4127 | gfc_gobble_whitespace (); |
4128 | c = gfc_next_ascii_char (); | |
4129 | if (c == ',') | |
4130 | continue; | |
4131 | if (c == ')') | |
4132 | break; | |
4133 | return MATCH_ERROR; | |
4134 | } | |
8b7a967e TB |
4135 | } |
4136 | else | |
4137 | type = true; | |
4138 | ||
4139 | if (gfc_match_eos () != MATCH_YES) | |
4140 | return MATCH_ERROR; | |
4141 | ||
a6c63173 | 4142 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4143 | |
4144 | return MATCH_YES; | |
e5ddaa24 TS |
4145 | } |
4146 | ||
4147 | ||
4148 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4149 | ||
4150 | static match | |
1107b970 | 4151 | match_implicit_range (void) |
e5ddaa24 | 4152 | { |
8fc541d3 FXC |
4153 | char c, c1, c2; |
4154 | int inner; | |
e5ddaa24 TS |
4155 | locus cur_loc; |
4156 | ||
4157 | cur_loc = gfc_current_locus; | |
4158 | ||
4159 | gfc_gobble_whitespace (); | |
8fc541d3 | 4160 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4161 | if (c != '(') |
4162 | { | |
4163 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4164 | goto bad; | |
4165 | } | |
4166 | ||
4167 | inner = 1; | |
4168 | while (inner) | |
4169 | { | |
4170 | gfc_gobble_whitespace (); | |
8fc541d3 | 4171 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4172 | if (!ISALPHA (c1)) |
4173 | goto bad; | |
4174 | ||
4175 | gfc_gobble_whitespace (); | |
8fc541d3 | 4176 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4177 | |
4178 | switch (c) | |
4179 | { | |
4180 | case ')': | |
66e4ab31 | 4181 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4182 | |
4183 | case ',': | |
4184 | c2 = c1; | |
4185 | break; | |
4186 | ||
4187 | case '-': | |
4188 | gfc_gobble_whitespace (); | |
8fc541d3 | 4189 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4190 | if (!ISALPHA (c2)) |
4191 | goto bad; | |
4192 | ||
4193 | gfc_gobble_whitespace (); | |
8fc541d3 | 4194 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4195 | |
4196 | if ((c != ',') && (c != ')')) | |
4197 | goto bad; | |
4198 | if (c == ')') | |
4199 | inner = 0; | |
4200 | ||
4201 | break; | |
4202 | ||
4203 | default: | |
4204 | goto bad; | |
4205 | } | |
4206 | ||
4207 | if (c1 > c2) | |
4208 | { | |
4209 | gfc_error ("Letters must be in alphabetic order in " | |
4210 | "IMPLICIT statement at %C"); | |
4211 | goto bad; | |
4212 | } | |
4213 | ||
4214 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4215 | implicits from this IMPLICIT statement. We do not check for |
4216 | conflicts with whatever earlier IMPLICIT statements may have | |
4217 | set. This is done when we've successfully finished matching | |
4218 | the current one. */ | |
524af0d6 | 4219 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4220 | goto bad; |
4221 | } | |
4222 | ||
4223 | return MATCH_YES; | |
4224 | ||
4225 | bad: | |
4226 | gfc_syntax_error (ST_IMPLICIT); | |
4227 | ||
4228 | gfc_current_locus = cur_loc; | |
4229 | return MATCH_ERROR; | |
4230 | } | |
4231 | ||
4232 | ||
4233 | /* Match an IMPLICIT statement, storing the types for | |
4234 | gfc_set_implicit() if the statement is accepted by the parser. | |
4235 | There is a strange looking, but legal syntactic construction | |
4236 | possible. It looks like: | |
4237 | ||
4238 | IMPLICIT INTEGER (a-b) (c-d) | |
4239 | ||
4240 | This is legal if "a-b" is a constant expression that happens to | |
4241 | equal one of the legal kinds for integers. The real problem | |
4242 | happens with an implicit specification that looks like: | |
4243 | ||
4244 | IMPLICIT INTEGER (a-b) | |
4245 | ||
4246 | In this case, a typespec matcher that is "greedy" (as most of the | |
4247 | matchers are) gobbles the character range as a kindspec, leaving | |
4248 | nothing left. We therefore have to go a bit more slowly in the | |
4249 | matching process by inhibiting the kindspec checking during | |
4250 | typespec matching and checking for a kind later. */ | |
4251 | ||
4252 | match | |
4253 | gfc_match_implicit (void) | |
4254 | { | |
4255 | gfc_typespec ts; | |
4256 | locus cur_loc; | |
8fc541d3 | 4257 | char c; |
e5ddaa24 TS |
4258 | match m; |
4259 | ||
8b7a967e TB |
4260 | if (gfc_current_ns->seen_implicit_none) |
4261 | { | |
4262 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4263 | "statement"); | |
4264 | return MATCH_ERROR; | |
4265 | } | |
4266 | ||
44000dbb JD |
4267 | gfc_clear_ts (&ts); |
4268 | ||
e5ddaa24 TS |
4269 | /* We don't allow empty implicit statements. */ |
4270 | if (gfc_match_eos () == MATCH_YES) | |
4271 | { | |
4272 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4273 | return MATCH_ERROR; | |
4274 | } | |
4275 | ||
e5ddaa24 TS |
4276 | do |
4277 | { | |
1107b970 PB |
4278 | /* First cleanup. */ |
4279 | gfc_clear_new_implicit (); | |
4280 | ||
e5ddaa24 | 4281 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4282 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4283 | if (m == MATCH_ERROR) |
4284 | goto error; | |
4285 | if (m == MATCH_NO) | |
4286 | goto syntax; | |
4287 | ||
4288 | cur_loc = gfc_current_locus; | |
1107b970 | 4289 | m = match_implicit_range (); |
e5ddaa24 TS |
4290 | |
4291 | if (m == MATCH_YES) | |
4292 | { | |
1107b970 | 4293 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4294 | gfc_gobble_whitespace (); |
a6c63173 TB |
4295 | c = gfc_peek_ascii_char (); |
4296 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4297 | { |
4298 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4299 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4300 | { |
9d64df18 | 4301 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4302 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
4303 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
4304 | NULL, 1); | |
1107b970 PB |
4305 | } |
4306 | ||
4307 | /* Record the Successful match. */ | |
524af0d6 | 4308 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4309 | return MATCH_ERROR; |
a6c63173 TB |
4310 | if (c == ',') |
4311 | c = gfc_next_ascii_char (); | |
4312 | else if (gfc_match_eos () == MATCH_ERROR) | |
4313 | goto error; | |
1107b970 PB |
4314 | continue; |
4315 | } | |
e5ddaa24 TS |
4316 | |
4317 | gfc_current_locus = cur_loc; | |
4318 | } | |
4319 | ||
1107b970 PB |
4320 | /* Discard the (incorrectly) matched range. */ |
4321 | gfc_clear_new_implicit (); | |
4322 | ||
4323 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4324 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4325 | m = gfc_match_char_spec (&ts); |
1107b970 | 4326 | else |
e5ddaa24 | 4327 | { |
e2d29968 | 4328 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4329 | if (m == MATCH_NO) |
1107b970 PB |
4330 | { |
4331 | m = gfc_match_old_kind_spec (&ts); | |
4332 | if (m == MATCH_ERROR) | |
4333 | goto error; | |
4334 | if (m == MATCH_NO) | |
4335 | goto syntax; | |
4336 | } | |
e5ddaa24 | 4337 | } |
1107b970 PB |
4338 | if (m == MATCH_ERROR) |
4339 | goto error; | |
e5ddaa24 | 4340 | |
1107b970 | 4341 | m = match_implicit_range (); |
e5ddaa24 TS |
4342 | if (m == MATCH_ERROR) |
4343 | goto error; | |
4344 | if (m == MATCH_NO) | |
4345 | goto syntax; | |
4346 | ||
4347 | gfc_gobble_whitespace (); | |
8fc541d3 | 4348 | c = gfc_next_ascii_char (); |
a6c63173 | 4349 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4350 | goto syntax; |
4351 | ||
524af0d6 | 4352 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4353 | return MATCH_ERROR; |
e5ddaa24 TS |
4354 | } |
4355 | while (c == ','); | |
4356 | ||
1107b970 | 4357 | return MATCH_YES; |
e5ddaa24 TS |
4358 | |
4359 | syntax: | |
4360 | gfc_syntax_error (ST_IMPLICIT); | |
4361 | ||
4362 | error: | |
4363 | return MATCH_ERROR; | |
4364 | } | |
4365 | ||
66e4ab31 | 4366 | |
8998be20 TB |
4367 | match |
4368 | gfc_match_import (void) | |
4369 | { | |
4370 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4371 | match m; | |
4372 | gfc_symbol *sym; | |
4373 | gfc_symtree *st; | |
4374 | ||
66e4ab31 SK |
4375 | if (gfc_current_ns->proc_name == NULL |
4376 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4377 | { |
4378 | gfc_error ("IMPORT statement at %C only permitted in " | |
4379 | "an INTERFACE body"); | |
4380 | return MATCH_ERROR; | |
4381 | } | |
4382 | ||
4668d6f9 PT |
4383 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4384 | { | |
4385 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4386 | "in a module procedure interface body"); | |
4387 | return MATCH_ERROR; | |
4388 | } | |
4389 | ||
524af0d6 | 4390 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4391 | return MATCH_ERROR; |
4392 | ||
4393 | if (gfc_match_eos () == MATCH_YES) | |
4394 | { | |
4395 | /* All host variables should be imported. */ | |
4396 | gfc_current_ns->has_import_set = 1; | |
4397 | return MATCH_YES; | |
4398 | } | |
4399 | ||
4400 | if (gfc_match (" ::") == MATCH_YES) | |
4401 | { | |
4402 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4403 | { |
4404 | gfc_error ("Expecting list of named entities at %C"); | |
4405 | return MATCH_ERROR; | |
4406 | } | |
8998be20 TB |
4407 | } |
4408 | ||
4409 | for(;;) | |
4410 | { | |
2e8d9212 | 4411 | sym = NULL; |
8998be20 TB |
4412 | m = gfc_match (" %n", name); |
4413 | switch (m) | |
4414 | { | |
4415 | case MATCH_YES: | |
36d3fb4c | 4416 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4417 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4418 | { |
c4100eae | 4419 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4420 | return MATCH_ERROR; |
4421 | } | |
4e2cf5f5 | 4422 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4423 | && gfc_find_symbol (name, |
4424 | gfc_current_ns->proc_name->ns->parent, | |
4425 | 1, &sym)) | |
636dff67 | 4426 | { |
c4100eae | 4427 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4428 | return MATCH_ERROR; |
4429 | } | |
4430 | ||
4431 | if (sym == NULL) | |
4432 | { | |
c4100eae | 4433 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4434 | "at %C - does not exist.", name); |
4435 | return MATCH_ERROR; | |
4436 | } | |
4437 | ||
dd8b9dde | 4438 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4439 | { |
db30e21c | 4440 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4441 | "at %C", name); |
636dff67 SK |
4442 | goto next_item; |
4443 | } | |
4444 | ||
dd8b9dde | 4445 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4446 | st->n.sym = sym; |
4447 | sym->refs++; | |
5a8af0b4 | 4448 | sym->attr.imported = 1; |
8998be20 | 4449 | |
c3f34952 TB |
4450 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4451 | { | |
4452 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4453 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4454 | lower-case name contains the associated generic function. */ |
c3f34952 | 4455 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4456 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4457 | st->n.sym = sym; |
4458 | sym->refs++; | |
4459 | sym->attr.imported = 1; | |
4460 | } | |
4461 | ||
8998be20 TB |
4462 | goto next_item; |
4463 | ||
4464 | case MATCH_NO: | |
4465 | break; | |
4466 | ||
4467 | case MATCH_ERROR: | |
4468 | return MATCH_ERROR; | |
4469 | } | |
4470 | ||
4471 | next_item: | |
4472 | if (gfc_match_eos () == MATCH_YES) | |
4473 | break; | |
4474 | if (gfc_match_char (',') != MATCH_YES) | |
4475 | goto syntax; | |
4476 | } | |
4477 | ||
4478 | return MATCH_YES; | |
4479 | ||
4480 | syntax: | |
4481 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4482 | return MATCH_ERROR; | |
4483 | } | |
e5ddaa24 | 4484 | |
66e4ab31 | 4485 | |
f2449db4 RS |
4486 | /* A minimal implementation of gfc_match without whitespace, escape |
4487 | characters or variable arguments. Returns true if the next | |
4488 | characters match the TARGET template exactly. */ | |
4489 | ||
4490 | static bool | |
4491 | match_string_p (const char *target) | |
4492 | { | |
4493 | const char *p; | |
4494 | ||
4495 | for (p = target; *p; p++) | |
8fc541d3 | 4496 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4497 | return false; |
4498 | return true; | |
4499 | } | |
4500 | ||
6de9cd9a DN |
4501 | /* Matches an attribute specification including array specs. If |
4502 | successful, leaves the variables current_attr and current_as | |
4503 | holding the specification. Also sets the colon_seen variable for | |
4504 | later use by matchers associated with initializations. | |
4505 | ||
4506 | This subroutine is a little tricky in the sense that we don't know | |
4507 | if we really have an attr-spec until we hit the double colon. | |
4508 | Until that time, we can only return MATCH_NO. This forces us to | |
4509 | check for duplicate specification at this level. */ | |
4510 | ||
4511 | static match | |
4512 | match_attr_spec (void) | |
4513 | { | |
6de9cd9a | 4514 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4515 | enum |
6de9cd9a DN |
4516 | { GFC_DECL_BEGIN = 0, |
4517 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
4518 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4519 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4520 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4521 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4522 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4523 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4524 | }; |
6de9cd9a DN |
4525 | |
4526 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4527 | #define NUM_DECL GFC_DECL_END | |
4528 | ||
6de9cd9a DN |
4529 | locus start, seen_at[NUM_DECL]; |
4530 | int seen[NUM_DECL]; | |
09639a83 | 4531 | unsigned int d; |
6de9cd9a DN |
4532 | const char *attr; |
4533 | match m; | |
524af0d6 | 4534 | bool t; |
6de9cd9a DN |
4535 | |
4536 | gfc_clear_attr (¤t_attr); | |
63645982 | 4537 | start = gfc_current_locus; |
6de9cd9a DN |
4538 | |
4539 | current_as = NULL; | |
4540 | colon_seen = 0; | |
6f855a26 | 4541 | attr_seen = 0; |
6de9cd9a DN |
4542 | |
4543 | /* See if we get all of the keywords up to the final double colon. */ | |
4544 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4545 | seen[d] = 0; | |
4546 | ||
4547 | for (;;) | |
4548 | { | |
8fc541d3 | 4549 | char ch; |
a8b3b0b6 | 4550 | |
f2449db4 RS |
4551 | d = DECL_NONE; |
4552 | gfc_gobble_whitespace (); | |
4553 | ||
8fc541d3 | 4554 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4555 | if (ch == ':') |
4556 | { | |
4557 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4558 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4559 | break; |
4560 | } | |
4561 | else if (ch == ',') | |
a8b3b0b6 | 4562 | { |
a8b3b0b6 | 4563 | gfc_gobble_whitespace (); |
8fc541d3 | 4564 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4565 | { |
f2449db4 | 4566 | case 'a': |
1eee5628 TB |
4567 | gfc_next_ascii_char (); |
4568 | switch (gfc_next_ascii_char ()) | |
4569 | { | |
4570 | case 'l': | |
4571 | if (match_string_p ("locatable")) | |
4572 | { | |
4573 | /* Matched "allocatable". */ | |
4574 | d = DECL_ALLOCATABLE; | |
4575 | } | |
4576 | break; | |
4577 | ||
4578 | case 's': | |
4579 | if (match_string_p ("ynchronous")) | |
4580 | { | |
4581 | /* Matched "asynchronous". */ | |
4582 | d = DECL_ASYNCHRONOUS; | |
4583 | } | |
4584 | break; | |
34d567d1 FR |
4585 | |
4586 | case 'u': | |
4587 | if (match_string_p ("tomatic")) | |
4588 | { | |
4589 | /* Matched "automatic". */ | |
4590 | d = DECL_AUTOMATIC; | |
4591 | } | |
4592 | break; | |
1eee5628 | 4593 | } |
fe4e525c | 4594 | break; |
f2449db4 RS |
4595 | |
4596 | case 'b': | |
a8b3b0b6 | 4597 | /* Try and match the bind(c). */ |
1eabf70a | 4598 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4599 | if (m == MATCH_YES) |
a8b3b0b6 | 4600 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4601 | else if (m == MATCH_ERROR) |
4602 | goto cleanup; | |
f2449db4 RS |
4603 | break; |
4604 | ||
be59db2d | 4605 | case 'c': |
fe4e525c TB |
4606 | gfc_next_ascii_char (); |
4607 | if ('o' != gfc_next_ascii_char ()) | |
4608 | break; | |
4609 | switch (gfc_next_ascii_char ()) | |
4610 | { | |
4611 | case 'd': | |
4612 | if (match_string_p ("imension")) | |
4613 | { | |
4614 | d = DECL_CODIMENSION; | |
4615 | break; | |
4616 | } | |
191816a3 | 4617 | /* FALLTHRU */ |
fe4e525c TB |
4618 | case 'n': |
4619 | if (match_string_p ("tiguous")) | |
4620 | { | |
4621 | d = DECL_CONTIGUOUS; | |
4622 | break; | |
4623 | } | |
4624 | } | |
be59db2d TB |
4625 | break; |
4626 | ||
f2449db4 RS |
4627 | case 'd': |
4628 | if (match_string_p ("dimension")) | |
4629 | d = DECL_DIMENSION; | |
4630 | break; | |
4631 | ||
4632 | case 'e': | |
4633 | if (match_string_p ("external")) | |
4634 | d = DECL_EXTERNAL; | |
4635 | break; | |
4636 | ||
4637 | case 'i': | |
4638 | if (match_string_p ("int")) | |
4639 | { | |
8fc541d3 | 4640 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4641 | if (ch == 'e') |
4642 | { | |
4643 | if (match_string_p ("nt")) | |
4644 | { | |
4645 | /* Matched "intent". */ | |
4646 | /* TODO: Call match_intent_spec from here. */ | |
4647 | if (gfc_match (" ( in out )") == MATCH_YES) | |
4648 | d = DECL_INOUT; | |
4649 | else if (gfc_match (" ( in )") == MATCH_YES) | |
4650 | d = DECL_IN; | |
4651 | else if (gfc_match (" ( out )") == MATCH_YES) | |
4652 | d = DECL_OUT; | |
4653 | } | |
4654 | } | |
4655 | else if (ch == 'r') | |
4656 | { | |
4657 | if (match_string_p ("insic")) | |
4658 | { | |
4659 | /* Matched "intrinsic". */ | |
4660 | d = DECL_INTRINSIC; | |
4661 | } | |
4662 | } | |
4663 | } | |
4664 | break; | |
4665 | ||
5bab4c96 PT |
4666 | case 'k': |
4667 | if (match_string_p ("kind")) | |
4668 | d = DECL_KIND; | |
4669 | break; | |
4670 | ||
4671 | case 'l': | |
4672 | if (match_string_p ("len")) | |
4673 | d = DECL_LEN; | |
4674 | break; | |
4675 | ||
f2449db4 RS |
4676 | case 'o': |
4677 | if (match_string_p ("optional")) | |
4678 | d = DECL_OPTIONAL; | |
4679 | break; | |
4680 | ||
4681 | case 'p': | |
8fc541d3 FXC |
4682 | gfc_next_ascii_char (); |
4683 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
4684 | { |
4685 | case 'a': | |
4686 | if (match_string_p ("rameter")) | |
4687 | { | |
4688 | /* Matched "parameter". */ | |
4689 | d = DECL_PARAMETER; | |
4690 | } | |
4691 | break; | |
4692 | ||
4693 | case 'o': | |
4694 | if (match_string_p ("inter")) | |
4695 | { | |
4696 | /* Matched "pointer". */ | |
4697 | d = DECL_POINTER; | |
4698 | } | |
4699 | break; | |
4700 | ||
4701 | case 'r': | |
8fc541d3 | 4702 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4703 | if (ch == 'i') |
4704 | { | |
4705 | if (match_string_p ("vate")) | |
4706 | { | |
4707 | /* Matched "private". */ | |
4708 | d = DECL_PRIVATE; | |
4709 | } | |
4710 | } | |
4711 | else if (ch == 'o') | |
4712 | { | |
4713 | if (match_string_p ("tected")) | |
4714 | { | |
4715 | /* Matched "protected". */ | |
4716 | d = DECL_PROTECTED; | |
4717 | } | |
4718 | } | |
4719 | break; | |
4720 | ||
4721 | case 'u': | |
4722 | if (match_string_p ("blic")) | |
4723 | { | |
4724 | /* Matched "public". */ | |
4725 | d = DECL_PUBLIC; | |
4726 | } | |
4727 | break; | |
4728 | } | |
4729 | break; | |
4730 | ||
4731 | case 's': | |
34d567d1 FR |
4732 | gfc_next_ascii_char (); |
4733 | switch (gfc_next_ascii_char ()) | |
4734 | { | |
4735 | case 'a': | |
4736 | if (match_string_p ("ve")) | |
4737 | { | |
4738 | /* Matched "save". */ | |
4739 | d = DECL_SAVE; | |
4740 | } | |
4741 | break; | |
4742 | ||
4743 | case 't': | |
4744 | if (match_string_p ("atic")) | |
4745 | { | |
4746 | /* Matched "static". */ | |
4747 | d = DECL_STATIC; | |
4748 | } | |
4749 | break; | |
4750 | } | |
f2449db4 RS |
4751 | break; |
4752 | ||
4753 | case 't': | |
4754 | if (match_string_p ("target")) | |
4755 | d = DECL_TARGET; | |
4756 | break; | |
4757 | ||
4758 | case 'v': | |
8fc541d3 FXC |
4759 | gfc_next_ascii_char (); |
4760 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
4761 | if (ch == 'a') |
4762 | { | |
4763 | if (match_string_p ("lue")) | |
4764 | { | |
4765 | /* Matched "value". */ | |
4766 | d = DECL_VALUE; | |
4767 | } | |
4768 | } | |
4769 | else if (ch == 'o') | |
4770 | { | |
4771 | if (match_string_p ("latile")) | |
4772 | { | |
4773 | /* Matched "volatile". */ | |
4774 | d = DECL_VOLATILE; | |
4775 | } | |
4776 | } | |
4777 | break; | |
a8b3b0b6 CR |
4778 | } |
4779 | } | |
d468bcdb | 4780 | |
f2449db4 RS |
4781 | /* No double colon and no recognizable decl_type, so assume that |
4782 | we've been looking at something else the whole time. */ | |
4783 | if (d == DECL_NONE) | |
4784 | { | |
4785 | m = MATCH_NO; | |
4786 | goto cleanup; | |
4787 | } | |
d51347f9 | 4788 | |
acb388a0 JD |
4789 | /* Check to make sure any parens are paired up correctly. */ |
4790 | if (gfc_match_parens () == MATCH_ERROR) | |
4791 | { | |
4792 | m = MATCH_ERROR; | |
4793 | goto cleanup; | |
4794 | } | |
4795 | ||
6de9cd9a | 4796 | seen[d]++; |
63645982 | 4797 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 4798 | |
d3a9eea2 | 4799 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 4800 | { |
d3a9eea2 | 4801 | gfc_array_spec *as = NULL; |
6de9cd9a | 4802 | |
d3a9eea2 TB |
4803 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
4804 | d == DECL_CODIMENSION); | |
4805 | ||
4806 | if (current_as == NULL) | |
4807 | current_as = as; | |
4808 | else if (m == MATCH_YES) | |
6de9cd9a | 4809 | { |
524af0d6 | 4810 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 4811 | m = MATCH_ERROR; |
cede9502 | 4812 | free (as); |
6de9cd9a DN |
4813 | } |
4814 | ||
be59db2d TB |
4815 | if (m == MATCH_NO) |
4816 | { | |
d3a9eea2 TB |
4817 | if (d == DECL_CODIMENSION) |
4818 | gfc_error ("Missing codimension specification at %C"); | |
4819 | else | |
4820 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
4821 | m = MATCH_ERROR; |
4822 | } | |
4823 | ||
4824 | if (m == MATCH_ERROR) | |
4825 | goto cleanup; | |
4826 | } | |
6de9cd9a DN |
4827 | } |
4828 | ||
6de9cd9a DN |
4829 | /* Since we've seen a double colon, we have to be looking at an |
4830 | attr-spec. This means that we can now issue errors. */ | |
4831 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4832 | if (seen[d] > 1) | |
4833 | { | |
4834 | switch (d) | |
4835 | { | |
4836 | case DECL_ALLOCATABLE: | |
4837 | attr = "ALLOCATABLE"; | |
4838 | break; | |
1eee5628 TB |
4839 | case DECL_ASYNCHRONOUS: |
4840 | attr = "ASYNCHRONOUS"; | |
4841 | break; | |
be59db2d TB |
4842 | case DECL_CODIMENSION: |
4843 | attr = "CODIMENSION"; | |
4844 | break; | |
fe4e525c TB |
4845 | case DECL_CONTIGUOUS: |
4846 | attr = "CONTIGUOUS"; | |
4847 | break; | |
6de9cd9a DN |
4848 | case DECL_DIMENSION: |
4849 | attr = "DIMENSION"; | |
4850 | break; | |
4851 | case DECL_EXTERNAL: | |
4852 | attr = "EXTERNAL"; | |
4853 | break; | |
4854 | case DECL_IN: | |
4855 | attr = "INTENT (IN)"; | |
4856 | break; | |
4857 | case DECL_OUT: | |
4858 | attr = "INTENT (OUT)"; | |
4859 | break; | |
4860 | case DECL_INOUT: | |
4861 | attr = "INTENT (IN OUT)"; | |
4862 | break; | |
4863 | case DECL_INTRINSIC: | |
4864 | attr = "INTRINSIC"; | |
4865 | break; | |
4866 | case DECL_OPTIONAL: | |
4867 | attr = "OPTIONAL"; | |
4868 | break; | |
5bab4c96 PT |
4869 | case DECL_KIND: |
4870 | attr = "KIND"; | |
4871 | break; | |
4872 | case DECL_LEN: | |
4873 | attr = "LEN"; | |
4874 | break; | |
6de9cd9a DN |
4875 | case DECL_PARAMETER: |
4876 | attr = "PARAMETER"; | |
4877 | break; | |
4878 | case DECL_POINTER: | |
4879 | attr = "POINTER"; | |
4880 | break; | |
ee7e677f TB |
4881 | case DECL_PROTECTED: |
4882 | attr = "PROTECTED"; | |
4883 | break; | |
6de9cd9a DN |
4884 | case DECL_PRIVATE: |
4885 | attr = "PRIVATE"; | |
4886 | break; | |
4887 | case DECL_PUBLIC: | |
4888 | attr = "PUBLIC"; | |
4889 | break; | |
4890 | case DECL_SAVE: | |
4891 | attr = "SAVE"; | |
4892 | break; | |
34d567d1 FR |
4893 | case DECL_STATIC: |
4894 | attr = "STATIC"; | |
4895 | break; | |
4896 | case DECL_AUTOMATIC: | |
4897 | attr = "AUTOMATIC"; | |
4898 | break; | |
6de9cd9a DN |
4899 | case DECL_TARGET: |
4900 | attr = "TARGET"; | |
4901 | break; | |
a8b3b0b6 CR |
4902 | case DECL_IS_BIND_C: |
4903 | attr = "IS_BIND_C"; | |
4904 | break; | |
4905 | case DECL_VALUE: | |
4906 | attr = "VALUE"; | |
4907 | break; | |
775e6c3a TB |
4908 | case DECL_VOLATILE: |
4909 | attr = "VOLATILE"; | |
4910 | break; | |
6de9cd9a | 4911 | default: |
66e4ab31 | 4912 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
4913 | } |
4914 | ||
4915 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
4916 | m = MATCH_ERROR; | |
4917 | goto cleanup; | |
4918 | } | |
4919 | ||
4920 | /* Now that we've dealt with duplicate attributes, add the attributes | |
4921 | to the current attribute. */ | |
4922 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4923 | { | |
4924 | if (seen[d] == 0) | |
4925 | continue; | |
6f855a26 FR |
4926 | else |
4927 | attr_seen = 1; | |
6de9cd9a | 4928 | |
34d567d1 FR |
4929 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
4930 | && !flag_dec_static) | |
4931 | { | |
cf004230 FR |
4932 | gfc_error ("%s at %L is a DEC extension, enable with " |
4933 | "%<-fdec-static%>", | |
34d567d1 FR |
4934 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
4935 | m = MATCH_ERROR; | |
4936 | goto cleanup; | |
4937 | } | |
4938 | /* Allow SAVE with STATIC, but don't complain. */ | |
4939 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
4940 | continue; | |
4941 | ||
6de9cd9a | 4942 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
4943 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
4944 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 4945 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 4946 | { |
5046aff5 PT |
4947 | if (d == DECL_ALLOCATABLE) |
4948 | { | |
524af0d6 JB |
4949 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
4950 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
4951 | { |
4952 | m = MATCH_ERROR; | |
4953 | goto cleanup; | |
4954 | } | |
636dff67 | 4955 | } |
5bab4c96 PT |
4956 | else if (d == DECL_KIND) |
4957 | { | |
4958 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
4959 | "attribute at %C in a TYPE definition")) | |
4960 | { | |
4961 | m = MATCH_ERROR; | |
4962 | goto cleanup; | |
4963 | } | |
4964 | if (current_ts.type != BT_INTEGER) | |
4965 | { | |
4966 | gfc_error ("Component with KIND attribute at %C must be " | |
4967 | "INTEGER"); | |
4968 | m = MATCH_ERROR; | |
4969 | goto cleanup; | |
4970 | } | |
4971 | if (current_ts.kind != gfc_default_integer_kind) | |
4972 | { | |
4973 | gfc_error ("Component with KIND attribute at %C must be " | |
4974 | "default integer kind (%d)", | |
4975 | gfc_default_integer_kind); | |
4976 | m = MATCH_ERROR; | |
4977 | goto cleanup; | |
4978 | } | |
4979 | } | |
4980 | else if (d == DECL_LEN) | |
4981 | { | |
4982 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
4983 | "attribute at %C in a TYPE definition")) | |
4984 | { | |
4985 | m = MATCH_ERROR; | |
4986 | goto cleanup; | |
4987 | } | |
4988 | if (current_ts.type != BT_INTEGER) | |
4989 | { | |
4990 | gfc_error ("Component with LEN attribute at %C must be " | |
4991 | "INTEGER"); | |
4992 | m = MATCH_ERROR; | |
4993 | goto cleanup; | |
4994 | } | |
4995 | if (current_ts.kind != gfc_default_integer_kind) | |
4996 | { | |
4997 | gfc_error ("Component with LEN attribute at %C must be " | |
4998 | "default integer kind (%d)", | |
4999 | gfc_default_integer_kind); | |
5000 | m = MATCH_ERROR; | |
5001 | goto cleanup; | |
5002 | } | |
5003 | } | |
636dff67 | 5004 | else |
5046aff5 PT |
5005 | { |
5006 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5007 | &seen_at[d]); |
5046aff5 PT |
5008 | m = MATCH_ERROR; |
5009 | goto cleanup; | |
5010 | } | |
6de9cd9a DN |
5011 | } |
5012 | ||
4213f93b | 5013 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5014 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5015 | { |
5016 | if (d == DECL_PRIVATE) | |
5017 | attr = "PRIVATE"; | |
5018 | else | |
5019 | attr = "PUBLIC"; | |
d51347f9 TB |
5020 | if (gfc_current_state () == COMP_DERIVED |
5021 | && gfc_state_stack->previous | |
5022 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5023 | { | |
524af0d6 | 5024 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5025 | "at %L in a TYPE definition", attr, |
524af0d6 | 5026 | &seen_at[d])) |
d51347f9 TB |
5027 | { |
5028 | m = MATCH_ERROR; | |
5029 | goto cleanup; | |
5030 | } | |
5031 | } | |
5032 | else | |
5033 | { | |
5034 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5035 | "specification part of a module", attr, &seen_at[d]); | |
5036 | m = MATCH_ERROR; | |
5037 | goto cleanup; | |
5038 | } | |
4213f93b PT |
5039 | } |
5040 | ||
5bab4c96 PT |
5041 | if (gfc_current_state () != COMP_DERIVED |
5042 | && (d == DECL_KIND || d == DECL_LEN)) | |
5043 | { | |
5044 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5045 | "definition", &seen_at[d]); | |
5046 | m = MATCH_ERROR; | |
5047 | goto cleanup; | |
5048 | } | |
5049 | ||
6de9cd9a DN |
5050 | switch (d) |
5051 | { | |
5052 | case DECL_ALLOCATABLE: | |
5053 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5054 | break; | |
5055 | ||
1eee5628 | 5056 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5057 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5058 | t = false; | |
1eee5628 TB |
5059 | else |
5060 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5061 | break; | |
5062 | ||
be59db2d TB |
5063 | case DECL_CODIMENSION: |
5064 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5065 | break; | |
5066 | ||
fe4e525c | 5067 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5068 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5069 | t = false; | |
fe4e525c TB |
5070 | else |
5071 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5072 | break; | |
5073 | ||
6de9cd9a | 5074 | case DECL_DIMENSION: |
231b2fcc | 5075 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5076 | break; |
5077 | ||
5078 | case DECL_EXTERNAL: | |
5079 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5080 | break; | |
5081 | ||
5082 | case DECL_IN: | |
5083 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5084 | break; | |
5085 | ||
5086 | case DECL_OUT: | |
5087 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5088 | break; | |
5089 | ||
5090 | case DECL_INOUT: | |
5091 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5092 | break; | |
5093 | ||
5094 | case DECL_INTRINSIC: | |
5095 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5096 | break; | |
5097 | ||
5098 | case DECL_OPTIONAL: | |
5099 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5100 | break; | |
5101 | ||
5bab4c96 PT |
5102 | case DECL_KIND: |
5103 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5104 | break; | |
5105 | ||
5106 | case DECL_LEN: | |
5107 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5108 | break; | |
5109 | ||
6de9cd9a | 5110 | case DECL_PARAMETER: |
231b2fcc | 5111 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5112 | break; |
5113 | ||
5114 | case DECL_POINTER: | |
5115 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5116 | break; | |
5117 | ||
ee7e677f | 5118 | case DECL_PROTECTED: |
721be0f4 SK |
5119 | if (gfc_current_state () != COMP_MODULE |
5120 | || (gfc_current_ns->proc_name | |
5121 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5122 | { |
5123 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5124 | "part of a module"); | |
524af0d6 | 5125 | t = false; |
ee7e677f TB |
5126 | break; |
5127 | } | |
5128 | ||
524af0d6 JB |
5129 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5130 | t = false; | |
ee7e677f TB |
5131 | else |
5132 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5133 | break; | |
5134 | ||
6de9cd9a | 5135 | case DECL_PRIVATE: |
231b2fcc TS |
5136 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5137 | &seen_at[d]); | |
6de9cd9a DN |
5138 | break; |
5139 | ||
5140 | case DECL_PUBLIC: | |
231b2fcc TS |
5141 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5142 | &seen_at[d]); | |
6de9cd9a DN |
5143 | break; |
5144 | ||
34d567d1 | 5145 | case DECL_STATIC: |
6de9cd9a | 5146 | case DECL_SAVE: |
80f95228 | 5147 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5148 | break; |
5149 | ||
34d567d1 FR |
5150 | case DECL_AUTOMATIC: |
5151 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5152 | break; | |
5153 | ||
6de9cd9a DN |
5154 | case DECL_TARGET: |
5155 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5156 | break; | |
5157 | ||
a8b3b0b6 CR |
5158 | case DECL_IS_BIND_C: |
5159 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5160 | break; | |
f5acf0f2 | 5161 | |
06469efd | 5162 | case DECL_VALUE: |
524af0d6 JB |
5163 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5164 | t = false; | |
06469efd PT |
5165 | else |
5166 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5167 | break; | |
5168 | ||
775e6c3a | 5169 | case DECL_VOLATILE: |
524af0d6 JB |
5170 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5171 | t = false; | |
775e6c3a TB |
5172 | else |
5173 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5174 | break; | |
5175 | ||
6de9cd9a DN |
5176 | default: |
5177 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5178 | } | |
5179 | ||
524af0d6 | 5180 | if (!t) |
6de9cd9a DN |
5181 | { |
5182 | m = MATCH_ERROR; | |
5183 | goto cleanup; | |
5184 | } | |
5185 | } | |
5186 | ||
dab2cbf8 | 5187 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5188 | if ((gfc_current_state () == COMP_MODULE |
5189 | || gfc_current_state () == COMP_SUBMODULE) | |
5190 | && !current_attr.save | |
dab2cbf8 | 5191 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5192 | current_attr.save = SAVE_IMPLICIT; |
5193 | ||
6de9cd9a DN |
5194 | colon_seen = 1; |
5195 | return MATCH_YES; | |
5196 | ||
5197 | cleanup: | |
63645982 | 5198 | gfc_current_locus = start; |
6de9cd9a DN |
5199 | gfc_free_array_spec (current_as); |
5200 | current_as = NULL; | |
6f855a26 | 5201 | attr_seen = 0; |
6de9cd9a DN |
5202 | return m; |
5203 | } | |
5204 | ||
5205 | ||
a8b3b0b6 CR |
5206 | /* Set the binding label, dest_label, either with the binding label |
5207 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5208 | will be the symbol name in all lower case, as required by the draft | |
5209 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5210 | there is more than one argument (num_idents), it is an error. */ | |
5211 | ||
524af0d6 | 5212 | static bool |
f5acf0f2 | 5213 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5214 | int num_idents) |
a8b3b0b6 | 5215 | { |
ad4a2f64 | 5216 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5217 | { |
ad4a2f64 TB |
5218 | gfc_error ("Multiple identifiers provided with " |
5219 | "single NAME= specifier at %C"); | |
524af0d6 | 5220 | return false; |
ad4a2f64 | 5221 | } |
a8b3b0b6 | 5222 | |
62603fae | 5223 | if (curr_binding_label) |
eea58adb | 5224 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5225 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5226 | else |
5227 | { | |
5228 | /* No binding label given, and the NAME= specifier did not exist, | |
5229 | which means there was no NAME="". */ | |
5230 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5231 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5232 | } |
f5acf0f2 | 5233 | |
524af0d6 | 5234 | return true; |
a8b3b0b6 CR |
5235 | } |
5236 | ||
5237 | ||
5238 | /* Set the status of the given common block as being BIND(C) or not, | |
5239 | depending on the given parameter, is_bind_c. */ | |
5240 | ||
5241 | void | |
5242 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5243 | { | |
5244 | com_block->is_bind_c = is_bind_c; | |
5245 | return; | |
5246 | } | |
5247 | ||
5248 | ||
5249 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5250 | ||
524af0d6 | 5251 | bool |
00820a2a | 5252 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5253 | { |
bc21d315 | 5254 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5255 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5256 | ? true : false; |
00820a2a | 5257 | else if (ts->type == BT_CLASS) |
524af0d6 | 5258 | return false; |
45a69325 | 5259 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5260 | return false; |
45a69325 | 5261 | |
524af0d6 | 5262 | return true; |
a8b3b0b6 CR |
5263 | } |
5264 | ||
5265 | ||
5266 | /* Verify that the variables of a given common block, which has been | |
5267 | defined with the attribute specifier bind(c), to be of a C | |
5268 | interoperable type. Errors will be reported here, if | |
5269 | encountered. */ | |
5270 | ||
524af0d6 | 5271 | bool |
a8b3b0b6 CR |
5272 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5273 | { | |
5274 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5275 | bool retval = true; |
a8b3b0b6 CR |
5276 | |
5277 | curr_sym = com_block->head; | |
f5acf0f2 | 5278 | |
a8b3b0b6 CR |
5279 | /* Make sure we have at least one symbol. */ |
5280 | if (curr_sym == NULL) | |
5281 | return retval; | |
5282 | ||
5283 | /* Here we know we have a symbol, so we'll execute this loop | |
5284 | at least once. */ | |
5285 | do | |
5286 | { | |
5287 | /* The second to last param, 1, says this is in a common block. */ | |
5288 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5289 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5290 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5291 | |
5292 | return retval; | |
5293 | } | |
5294 | ||
5295 | ||
5296 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5297 | an appropriate error message is reported. */ | |
5298 | ||
524af0d6 | 5299 | bool |
a8b3b0b6 CR |
5300 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5301 | int is_in_common, gfc_common_head *com_block) | |
5302 | { | |
8327f9c2 | 5303 | bool bind_c_function = false; |
524af0d6 | 5304 | bool retval = true; |
d8fa96e0 | 5305 | |
8327f9c2 TB |
5306 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5307 | bind_c_function = true; | |
5308 | ||
d8fa96e0 CR |
5309 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5310 | { | |
5311 | tmp_sym = tmp_sym->result; | |
5312 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5313 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5314 | { |
48749dbc MLI |
5315 | gfc_warning (OPT_Wc_binding_type, |
5316 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5317 | "%L may not be C interoperable", tmp_sym->name, |
5318 | &tmp_sym->declared_at); | |
5319 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5320 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5321 | tmp_sym->ts.is_c_interop = 1; | |
5322 | tmp_sym->attr.is_c_interop = 1; | |
5323 | } | |
5324 | } | |
8327f9c2 | 5325 | |
a8b3b0b6 CR |
5326 | /* Here, we know we have the bind(c) attribute, so if we have |
5327 | enough type info, then verify that it's a C interop kind. | |
5328 | The info could be in the symbol already, or possibly still in | |
5329 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5330 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5331 | { |
524af0d6 | 5332 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5333 | { |
5334 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5335 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5336 | { |
48749dbc MLI |
5337 | gfc_warning (OPT_Wc_binding_type, |
5338 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5339 | "may not be a C interoperable " |
48749dbc | 5340 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5341 | tmp_sym->name, com_block->name, |
5342 | &(tmp_sym->declared_at), com_block->name); | |
5343 | } | |
5344 | else | |
5345 | { | |
5346 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5347 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5348 | "interoperable but it is BIND(C)", |
5349 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5350 | else if (warn_c_binding_type) |
48749dbc | 5351 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5352 | "may not be a C interoperable " |
c4100eae | 5353 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5354 | tmp_sym->name, &(tmp_sym->declared_at)); |
5355 | } | |
5356 | } | |
f5acf0f2 | 5357 | |
a8b3b0b6 CR |
5358 | /* Variables declared w/in a common block can't be bind(c) |
5359 | since there's no way for C to see these variables, so there's | |
5360 | semantically no reason for the attribute. */ | |
5361 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5362 | { | |
c4100eae | 5363 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5364 | "%L cannot be declared with BIND(C) " |
5365 | "since it is not a global", | |
5366 | tmp_sym->name, com_block->name, | |
5367 | &(tmp_sym->declared_at)); | |
524af0d6 | 5368 | retval = false; |
a8b3b0b6 | 5369 | } |
f5acf0f2 | 5370 | |
a8b3b0b6 CR |
5371 | /* Scalar variables that are bind(c) can not have the pointer |
5372 | or allocatable attributes. */ | |
5373 | if (tmp_sym->attr.is_bind_c == 1) | |
5374 | { | |
5375 | if (tmp_sym->attr.pointer == 1) | |
5376 | { | |
c4100eae | 5377 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5378 | "POINTER and BIND(C) attributes", |
5379 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5380 | retval = false; |
a8b3b0b6 CR |
5381 | } |
5382 | ||
5383 | if (tmp_sym->attr.allocatable == 1) | |
5384 | { | |
c4100eae | 5385 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5386 | "ALLOCATABLE and BIND(C) attributes", |
5387 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5388 | retval = false; |
a8b3b0b6 CR |
5389 | } |
5390 | ||
8327f9c2 TB |
5391 | } |
5392 | ||
5393 | /* If it is a BIND(C) function, make sure the return value is a | |
5394 | scalar value. The previous tests in this function made sure | |
5395 | the type is interoperable. */ | |
5396 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5397 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5398 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5399 | ||
5400 | /* BIND(C) functions can not return a character string. */ | |
5401 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
5402 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5403 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5404 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 5405 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
5406 | "be a character string", tmp_sym->name, |
5407 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
5408 | } |
5409 | ||
5410 | /* See if the symbol has been marked as private. If it has, make sure | |
5411 | there is no binding label and warn the user if there is one. */ | |
5412 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5413 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5414 | /* Use gfc_warning_now because we won't say that the symbol fails |
5415 | just because of this. */ | |
db30e21c | 5416 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5417 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5418 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5419 | ||
5420 | return retval; | |
5421 | } | |
5422 | ||
5423 | ||
5424 | /* Set the appropriate fields for a symbol that's been declared as | |
5425 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5426 | the type is C interoperable. Errors are reported by the functions | |
5427 | used to set/test these fields. */ | |
5428 | ||
524af0d6 | 5429 | bool |
a8b3b0b6 CR |
5430 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5431 | { | |
524af0d6 | 5432 | bool retval = true; |
f5acf0f2 | 5433 | |
a8b3b0b6 CR |
5434 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5435 | ||
5436 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5437 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5438 | ||
524af0d6 JB |
5439 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5440 | return false; | |
a8b3b0b6 CR |
5441 | |
5442 | return retval; | |
5443 | } | |
5444 | ||
5445 | ||
5446 | /* Set the fields marking the given common block as BIND(C), including | |
5447 | a binding label, and report any errors encountered. */ | |
5448 | ||
524af0d6 | 5449 | bool |
a8b3b0b6 CR |
5450 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5451 | { | |
524af0d6 | 5452 | bool retval = true; |
f5acf0f2 | 5453 | |
a8b3b0b6 | 5454 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5455 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5456 | num_idents)) |
5457 | return false; | |
a8b3b0b6 CR |
5458 | |
5459 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5460 | set_com_block_bind_c (com_block, 1); | |
5461 | ||
5462 | return retval; | |
5463 | } | |
5464 | ||
5465 | ||
5466 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5467 | attribute applies to. */ | |
5468 | ||
524af0d6 | 5469 | bool |
a8b3b0b6 CR |
5470 | get_bind_c_idents (void) |
5471 | { | |
5472 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5473 | int num_idents = 0; | |
5474 | gfc_symbol *tmp_sym = NULL; | |
5475 | match found_id; | |
5476 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5477 | |
a8b3b0b6 CR |
5478 | if (gfc_match_name (name) == MATCH_YES) |
5479 | { | |
5480 | found_id = MATCH_YES; | |
5481 | gfc_get_ha_symbol (name, &tmp_sym); | |
5482 | } | |
5483 | else if (match_common_name (name) == MATCH_YES) | |
5484 | { | |
5485 | found_id = MATCH_YES; | |
5486 | com_block = gfc_get_common (name, 0); | |
5487 | } | |
5488 | else | |
5489 | { | |
5490 | gfc_error ("Need either entity or common block name for " | |
5491 | "attribute specification statement at %C"); | |
524af0d6 | 5492 | return false; |
a8b3b0b6 | 5493 | } |
f5acf0f2 | 5494 | |
a8b3b0b6 CR |
5495 | /* Save the current identifier and look for more. */ |
5496 | do | |
5497 | { | |
5498 | /* Increment the number of identifiers found for this spec stmt. */ | |
5499 | num_idents++; | |
5500 | ||
5501 | /* Make sure we have a sym or com block, and verify that it can | |
5502 | be bind(c). Set the appropriate field(s) and look for more | |
5503 | identifiers. */ | |
f5acf0f2 | 5504 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5505 | { |
5506 | if (tmp_sym != NULL) | |
5507 | { | |
524af0d6 JB |
5508 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5509 | return false; | |
a8b3b0b6 CR |
5510 | } |
5511 | else | |
5512 | { | |
524af0d6 JB |
5513 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5514 | return false; | |
a8b3b0b6 | 5515 | } |
f5acf0f2 | 5516 | |
a8b3b0b6 CR |
5517 | /* Look to see if we have another identifier. */ |
5518 | tmp_sym = NULL; | |
5519 | if (gfc_match_eos () == MATCH_YES) | |
5520 | found_id = MATCH_NO; | |
5521 | else if (gfc_match_char (',') != MATCH_YES) | |
5522 | found_id = MATCH_NO; | |
5523 | else if (gfc_match_name (name) == MATCH_YES) | |
5524 | { | |
5525 | found_id = MATCH_YES; | |
5526 | gfc_get_ha_symbol (name, &tmp_sym); | |
5527 | } | |
5528 | else if (match_common_name (name) == MATCH_YES) | |
5529 | { | |
5530 | found_id = MATCH_YES; | |
5531 | com_block = gfc_get_common (name, 0); | |
5532 | } | |
5533 | else | |
5534 | { | |
5535 | gfc_error ("Missing entity or common block name for " | |
5536 | "attribute specification statement at %C"); | |
524af0d6 | 5537 | return false; |
a8b3b0b6 CR |
5538 | } |
5539 | } | |
5540 | else | |
5541 | { | |
5542 | gfc_internal_error ("Missing symbol"); | |
5543 | } | |
5544 | } while (found_id == MATCH_YES); | |
5545 | ||
5546 | /* if we get here we were successful */ | |
524af0d6 | 5547 | return true; |
a8b3b0b6 CR |
5548 | } |
5549 | ||
5550 | ||
5551 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5552 | |
a8b3b0b6 CR |
5553 | match |
5554 | gfc_match_bind_c_stmt (void) | |
5555 | { | |
5556 | match found_match = MATCH_NO; | |
5557 | gfc_typespec *ts; | |
5558 | ||
5559 | ts = ¤t_ts; | |
f5acf0f2 | 5560 | |
a8b3b0b6 CR |
5561 | /* This may not be necessary. */ |
5562 | gfc_clear_ts (ts); | |
5563 | /* Clear the temporary binding label holder. */ | |
62603fae | 5564 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5565 | |
5566 | /* Look for the bind(c). */ | |
1eabf70a | 5567 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5568 | |
5569 | if (found_match == MATCH_YES) | |
5570 | { | |
878cdb7b TB |
5571 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5572 | return MATCH_ERROR; | |
5573 | ||
a8b3b0b6 CR |
5574 | /* Look for the :: now, but it is not required. */ |
5575 | gfc_match (" :: "); | |
5576 | ||
5577 | /* Get the identifier(s) that needs to be updated. This may need to | |
5578 | change to hand the flag(s) for the attr specified so all identifiers | |
5579 | found can have all appropriate parts updated (assuming that the same | |
5580 | spec stmt can have multiple attrs, such as both bind(c) and | |
5581 | allocatable...). */ | |
524af0d6 | 5582 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5583 | /* Error message should have printed already. */ |
5584 | return MATCH_ERROR; | |
5585 | } | |
5586 | ||
5587 | return found_match; | |
5588 | } | |
5589 | ||
5590 | ||
6de9cd9a DN |
5591 | /* Match a data declaration statement. */ |
5592 | ||
5593 | match | |
5594 | gfc_match_data_decl (void) | |
5595 | { | |
5596 | gfc_symbol *sym; | |
5597 | match m; | |
949d5b72 | 5598 | int elem; |
6de9cd9a | 5599 | |
5bab4c96 PT |
5600 | type_param_spec_list = NULL; |
5601 | decl_type_param_list = NULL; | |
5602 | ||
a8b3b0b6 | 5603 | num_idents_on_line = 0; |
f5acf0f2 | 5604 | |
e74f1cc8 | 5605 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5606 | if (m != MATCH_YES) |
5607 | return m; | |
5608 | ||
2e23972e | 5609 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5610 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5611 | { |
bc21d315 | 5612 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5613 | |
5614 | if (sym == NULL) | |
5615 | { | |
5616 | m = MATCH_ERROR; | |
5617 | goto cleanup; | |
5618 | } | |
5619 | ||
bc21d315 | 5620 | current_ts.u.derived = sym; |
6de9cd9a DN |
5621 | } |
5622 | ||
5623 | m = match_attr_spec (); | |
5624 | if (m == MATCH_ERROR) | |
5625 | { | |
5626 | m = MATCH_NO; | |
5627 | goto cleanup; | |
5628 | } | |
5629 | ||
8b704316 PT |
5630 | if (current_ts.type == BT_CLASS |
5631 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5632 | goto ok; | |
5633 | ||
2e23972e JW |
5634 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5635 | && current_ts.u.derived->components == NULL | |
bc21d315 | 5636 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
5637 | { |
5638 | ||
f6288c24 | 5639 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
5640 | goto ok; |
5641 | ||
bf9f15ee PT |
5642 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED |
5643 | && current_ts.u.derived == gfc_current_block ()) | |
5644 | goto ok; | |
5645 | ||
bc21d315 | 5646 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 5647 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 5648 | |
976e21f6 | 5649 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
5650 | which has its components defined, or be a structure definition |
5651 | actively being parsed. */ | |
5652 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 5653 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
5654 | || current_ts.u.derived->attr.zero_comp |
5655 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
5656 | goto ok; |
5657 | ||
a1b80ec7 JW |
5658 | gfc_error ("Derived type at %C has not been previously defined " |
5659 | "and so cannot appear in a derived type definition"); | |
5660 | m = MATCH_ERROR; | |
5661 | goto cleanup; | |
6de9cd9a DN |
5662 | } |
5663 | ||
5664 | ok: | |
5665 | /* If we have an old-style character declaration, and no new-style | |
5666 | attribute specifications, then there a comma is optional between | |
5667 | the type specification and the variable list. */ | |
5668 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5669 | gfc_match_char (','); | |
5670 | ||
949d5b72 PT |
5671 | /* Give the types/attributes to symbols that follow. Give the element |
5672 | a number so that repeat character length expressions can be copied. */ | |
5673 | elem = 1; | |
6de9cd9a DN |
5674 | for (;;) |
5675 | { | |
a8b3b0b6 | 5676 | num_idents_on_line++; |
949d5b72 | 5677 | m = variable_decl (elem++); |
6de9cd9a DN |
5678 | if (m == MATCH_ERROR) |
5679 | goto cleanup; | |
5680 | if (m == MATCH_NO) | |
5681 | break; | |
5682 | ||
5683 | if (gfc_match_eos () == MATCH_YES) | |
5684 | goto cleanup; | |
5685 | if (gfc_match_char (',') != MATCH_YES) | |
5686 | break; | |
5687 | } | |
5688 | ||
0f447a6e | 5689 | if (!gfc_error_flag_test ()) |
94903212 FR |
5690 | { |
5691 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5692 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5693 | here to avoid confusing the remaining matchers, even if there was an | |
5694 | error during variable_decl. We must flush any such errors. Note this | |
5695 | causes the parser to gracefully continue parsing the remaining input | |
5696 | as a structure body, which likely follows. */ | |
5697 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5698 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5699 | { | |
5700 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5701 | " at %C"); | |
5702 | /* Skip the bad variable_decl and line up for the start of the | |
5703 | structure body. */ | |
5704 | gfc_error_recovery (); | |
5705 | m = MATCH_YES; | |
5706 | goto cleanup; | |
5707 | } | |
5708 | ||
5709 | gfc_error ("Syntax error in data declaration at %C"); | |
5710 | } | |
5711 | ||
6de9cd9a DN |
5712 | m = MATCH_ERROR; |
5713 | ||
a9f6f1f2 JD |
5714 | gfc_free_data_all (gfc_current_ns); |
5715 | ||
6de9cd9a | 5716 | cleanup: |
5bab4c96 PT |
5717 | if (saved_kind_expr) |
5718 | gfc_free_expr (saved_kind_expr); | |
5719 | if (type_param_spec_list) | |
5720 | gfc_free_actual_arglist (type_param_spec_list); | |
5721 | if (decl_type_param_list) | |
5722 | gfc_free_actual_arglist (decl_type_param_list); | |
5723 | saved_kind_expr = NULL; | |
6de9cd9a DN |
5724 | gfc_free_array_spec (current_as); |
5725 | current_as = NULL; | |
5726 | return m; | |
5727 | } | |
5728 | ||
5729 | ||
5730 | /* Match a prefix associated with a function or subroutine | |
5731 | declaration. If the typespec pointer is nonnull, then a typespec | |
5732 | can be matched. Note that if nothing matches, MATCH_YES is | |
5733 | returned (the null string was matched). */ | |
5734 | ||
1c8bcdf7 PT |
5735 | match |
5736 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 5737 | { |
7389bce6 | 5738 | bool seen_type; |
e6c14898 DK |
5739 | bool seen_impure; |
5740 | bool found_prefix; | |
6de9cd9a DN |
5741 | |
5742 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
5743 | seen_type = false; |
5744 | seen_impure = false; | |
6de9cd9a | 5745 | |
3df684e2 DK |
5746 | gcc_assert (!gfc_matching_prefix); |
5747 | gfc_matching_prefix = true; | |
f37e928c | 5748 | |
e6c14898 | 5749 | do |
6de9cd9a | 5750 | { |
e6c14898 | 5751 | found_prefix = false; |
6de9cd9a | 5752 | |
70112e2a PT |
5753 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
5754 | corresponding attribute seems natural and distinguishes these | |
5755 | procedures from procedure types of PROC_MODULE, which these are | |
5756 | as well. */ | |
5757 | if (gfc_match ("module% ") == MATCH_YES) | |
5758 | { | |
5759 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
5760 | goto error; | |
5761 | ||
5762 | current_attr.module_procedure = 1; | |
5763 | found_prefix = true; | |
5764 | } | |
5765 | ||
e6c14898 DK |
5766 | if (!seen_type && ts != NULL |
5767 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
5768 | && gfc_match_space () == MATCH_YES) | |
5769 | { | |
6de9cd9a | 5770 | |
e6c14898 DK |
5771 | seen_type = true; |
5772 | found_prefix = true; | |
5773 | } | |
5774 | ||
5775 | if (gfc_match ("elemental% ") == MATCH_YES) | |
5776 | { | |
524af0d6 | 5777 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
5778 | goto error; |
5779 | ||
5780 | found_prefix = true; | |
5781 | } | |
5782 | ||
5783 | if (gfc_match ("pure% ") == MATCH_YES) | |
5784 | { | |
524af0d6 | 5785 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
5786 | goto error; |
5787 | ||
5788 | found_prefix = true; | |
5789 | } | |
6de9cd9a | 5790 | |
e6c14898 DK |
5791 | if (gfc_match ("recursive% ") == MATCH_YES) |
5792 | { | |
524af0d6 | 5793 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
5794 | goto error; |
5795 | ||
5796 | found_prefix = true; | |
5797 | } | |
5798 | ||
5799 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
5800 | attribute but rather only prevents ELEMENTAL routines from being | |
5801 | automatically PURE. */ | |
5802 | if (gfc_match ("impure% ") == MATCH_YES) | |
5803 | { | |
524af0d6 | 5804 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
5805 | goto error; |
5806 | ||
5807 | seen_impure = true; | |
5808 | found_prefix = true; | |
5809 | } | |
6de9cd9a | 5810 | } |
e6c14898 | 5811 | while (found_prefix); |
6de9cd9a | 5812 | |
e6c14898 DK |
5813 | /* IMPURE and PURE must not both appear, of course. */ |
5814 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 5815 | { |
e6c14898 DK |
5816 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
5817 | goto error; | |
6de9cd9a DN |
5818 | } |
5819 | ||
e6c14898 DK |
5820 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
5821 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 5822 | { |
524af0d6 | 5823 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 5824 | goto error; |
6de9cd9a DN |
5825 | } |
5826 | ||
5827 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 5828 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 5829 | |
3df684e2 | 5830 | gfc_matching_prefix = false; |
6de9cd9a | 5831 | return MATCH_YES; |
f37e928c DK |
5832 | |
5833 | error: | |
3df684e2 DK |
5834 | gcc_assert (gfc_matching_prefix); |
5835 | gfc_matching_prefix = false; | |
f37e928c | 5836 | return MATCH_ERROR; |
6de9cd9a DN |
5837 | } |
5838 | ||
5839 | ||
1c8bcdf7 | 5840 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 5841 | |
524af0d6 | 5842 | static bool |
636dff67 | 5843 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 5844 | { |
6442a6f4 PT |
5845 | if (dest->module_procedure) |
5846 | { | |
5847 | if (current_attr.elemental) | |
5848 | dest->elemental = 1; | |
5849 | ||
5850 | if (current_attr.pure) | |
5851 | dest->pure = 1; | |
5852 | ||
5853 | if (current_attr.recursive) | |
5854 | dest->recursive = 1; | |
5855 | ||
5856 | /* Module procedures are unusual in that the 'dest' is copied from | |
5857 | the interface declaration. However, this is an oportunity to | |
5858 | check that the submodule declaration is compliant with the | |
5859 | interface. */ | |
5860 | if (dest->elemental && !current_attr.elemental) | |
5861 | { | |
5862 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
5863 | "missing at %L", where); | |
5864 | return false; | |
5865 | } | |
5866 | ||
5867 | if (dest->pure && !current_attr.pure) | |
5868 | { | |
5869 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
5870 | "missing at %L", where); | |
5871 | return false; | |
5872 | } | |
5873 | ||
5874 | if (dest->recursive && !current_attr.recursive) | |
5875 | { | |
5876 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
5877 | "missing at %L", where); | |
5878 | return false; | |
5879 | } | |
5880 | ||
5881 | return true; | |
5882 | } | |
6de9cd9a | 5883 | |
524af0d6 JB |
5884 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
5885 | return false; | |
6de9cd9a | 5886 | |
6442a6f4 PT |
5887 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
5888 | return false; | |
5889 | ||
524af0d6 JB |
5890 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
5891 | return false; | |
6de9cd9a | 5892 | |
524af0d6 | 5893 | return true; |
6de9cd9a DN |
5894 | } |
5895 | ||
5896 | ||
5bab4c96 PT |
5897 | /* Match a formal argument list or, if typeparam is true, a |
5898 | type_param_name_list. */ | |
6de9cd9a DN |
5899 | |
5900 | match | |
5bab4c96 PT |
5901 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
5902 | int null_flag, bool typeparam) | |
6de9cd9a DN |
5903 | { |
5904 | gfc_formal_arglist *head, *tail, *p, *q; | |
5905 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5906 | gfc_symbol *sym; | |
5907 | match m; | |
4668d6f9 | 5908 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
5909 | |
5910 | head = tail = NULL; | |
5911 | ||
4668d6f9 PT |
5912 | /* Keep the interface formal argument list and null it so that the |
5913 | matching for the new declaration can be done. The numbers and | |
5914 | names of the arguments are checked here. The interface formal | |
5915 | arguments are retained in formal_arglist and the characteristics | |
5916 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
5917 | in get_proc_name about the eventual need to copy the formal_arglist | |
5918 | and populate the formal namespace of the interface symbol. */ | |
5919 | if (progname->attr.module_procedure | |
5920 | && progname->attr.host_assoc) | |
5921 | { | |
5922 | formal = progname->formal; | |
5923 | progname->formal = NULL; | |
5924 | } | |
5925 | ||
6de9cd9a DN |
5926 | if (gfc_match_char ('(') != MATCH_YES) |
5927 | { | |
5928 | if (null_flag) | |
5929 | goto ok; | |
5930 | return MATCH_NO; | |
5931 | } | |
5932 | ||
5933 | if (gfc_match_char (')') == MATCH_YES) | |
5934 | goto ok; | |
5935 | ||
5936 | for (;;) | |
5937 | { | |
5938 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
5939 | { |
5940 | sym = NULL; | |
524af0d6 JB |
5941 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
5942 | "at %C")) | |
9362a03b JW |
5943 | { |
5944 | m = MATCH_ERROR; | |
5945 | goto cleanup; | |
5946 | } | |
5947 | } | |
6de9cd9a DN |
5948 | else |
5949 | { | |
5950 | m = gfc_match_name (name); | |
5951 | if (m != MATCH_YES) | |
5952 | goto cleanup; | |
5953 | ||
5bab4c96 PT |
5954 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
5955 | goto cleanup; | |
5956 | else if (typeparam | |
5957 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
5958 | goto cleanup; |
5959 | } | |
5960 | ||
5961 | p = gfc_get_formal_arglist (); | |
5962 | ||
5963 | if (head == NULL) | |
5964 | head = tail = p; | |
5965 | else | |
5966 | { | |
5967 | tail->next = p; | |
5968 | tail = p; | |
5969 | } | |
5970 | ||
5971 | tail->sym = sym; | |
5972 | ||
5973 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
5974 | dummy procedure. We don't apply these attributes to formal |
5975 | arguments of statement functions. */ | |
6de9cd9a | 5976 | if (sym != NULL && !st_flag |
524af0d6 JB |
5977 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
5978 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
5979 | { |
5980 | m = MATCH_ERROR; | |
5981 | goto cleanup; | |
5982 | } | |
5983 | ||
5984 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
5985 | so check for it explicitly. After the statement is accepted, |
5986 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
5987 | if (gfc_new_block != NULL && sym != NULL |
5988 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
5989 | { | |
c4100eae | 5990 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
5991 | sym->name); |
5992 | m = MATCH_ERROR; | |
5993 | goto cleanup; | |
5994 | } | |
5995 | ||
5996 | if (gfc_match_char (')') == MATCH_YES) | |
5997 | goto ok; | |
5998 | ||
5999 | m = gfc_match_char (','); | |
6000 | if (m != MATCH_YES) | |
6001 | { | |
6002 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6003 | goto cleanup; | |
6004 | } | |
6005 | } | |
6006 | ||
6007 | ok: | |
6008 | /* Check for duplicate symbols in the formal argument list. */ | |
6009 | if (head != NULL) | |
6010 | { | |
6011 | for (p = head; p->next; p = p->next) | |
6012 | { | |
6013 | if (p->sym == NULL) | |
6014 | continue; | |
6015 | ||
6016 | for (q = p->next; q; q = q->next) | |
6017 | if (p->sym == q->sym) | |
6018 | { | |
c4100eae | 6019 | gfc_error ("Duplicate symbol %qs in formal argument list " |
636dff67 | 6020 | "at %C", p->sym->name); |
6de9cd9a DN |
6021 | |
6022 | m = MATCH_ERROR; | |
6023 | goto cleanup; | |
6024 | } | |
6025 | } | |
6026 | } | |
6027 | ||
524af0d6 | 6028 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6029 | { |
6030 | m = MATCH_ERROR; | |
6031 | goto cleanup; | |
6032 | } | |
6033 | ||
e9d9b48d PT |
6034 | /* gfc_error_now used in following and return with MATCH_YES because |
6035 | doing otherwise results in a cascade of extraneous errors and in | |
6036 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6037 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6038 | { |
0ef5fbc1 PT |
6039 | bool arg_count_mismatch = false; |
6040 | ||
6041 | if (!formal && head) | |
6042 | arg_count_mismatch = true; | |
6043 | ||
6044 | /* Abbreviated module procedure declaration is not meant to have any | |
6045 | formal arguments! */ | |
e9d9b48d | 6046 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6047 | arg_count_mismatch = true; |
6048 | ||
4668d6f9 PT |
6049 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6050 | { | |
6051 | if ((p->next != NULL && q->next == NULL) | |
6052 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6053 | arg_count_mismatch = true; |
4668d6f9 PT |
6054 | else if ((p->sym == NULL && q->sym == NULL) |
6055 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6056 | continue; | |
6057 | else | |
6058 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6059 | "argument names (%s/%s) at %C", | |
6060 | p->sym->name, q->sym->name); | |
6061 | } | |
0ef5fbc1 PT |
6062 | |
6063 | if (arg_count_mismatch) | |
6064 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6065 | "formal arguments at %C"); | |
4668d6f9 PT |
6066 | } |
6067 | ||
6de9cd9a DN |
6068 | return MATCH_YES; |
6069 | ||
6070 | cleanup: | |
6071 | gfc_free_formal_arglist (head); | |
6072 | return m; | |
6073 | } | |
6074 | ||
6075 | ||
6076 | /* Match a RESULT specification following a function declaration or | |
6077 | ENTRY statement. Also matches the end-of-statement. */ | |
6078 | ||
6079 | static match | |
66e4ab31 | 6080 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6081 | { |
6082 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6083 | gfc_symbol *r; | |
6084 | match m; | |
6085 | ||
6086 | if (gfc_match (" result (") != MATCH_YES) | |
6087 | return MATCH_NO; | |
6088 | ||
6089 | m = gfc_match_name (name); | |
6090 | if (m != MATCH_YES) | |
6091 | return m; | |
6092 | ||
a8b3b0b6 CR |
6093 | /* Get the right paren, and that's it because there could be the |
6094 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6095 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6096 | { |
a8b3b0b6 | 6097 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6098 | return MATCH_ERROR; |
6099 | } | |
6100 | ||
6101 | if (strcmp (function->name, name) == 0) | |
6102 | { | |
636dff67 | 6103 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6104 | return MATCH_ERROR; |
6105 | } | |
6106 | ||
6107 | if (gfc_get_symbol (name, NULL, &r)) | |
6108 | return MATCH_ERROR; | |
6109 | ||
524af0d6 | 6110 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6111 | return MATCH_ERROR; |
6112 | ||
6113 | *result = r; | |
6114 | ||
6115 | return MATCH_YES; | |
6116 | } | |
6117 | ||
6118 | ||
a8b3b0b6 CR |
6119 | /* Match a function suffix, which could be a combination of a result |
6120 | clause and BIND(C), either one, or neither. The draft does not | |
6121 | require them to come in a specific order. */ | |
6122 | ||
6123 | match | |
6124 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6125 | { | |
6126 | match is_bind_c; /* Found bind(c). */ | |
6127 | match is_result; /* Found result clause. */ | |
6128 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6129 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6130 | bool allow_binding_name; |
a8b3b0b6 CR |
6131 | |
6132 | /* Initialize to having found nothing. */ | |
6133 | found_match = MATCH_NO; | |
f5acf0f2 | 6134 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6135 | is_result = MATCH_NO; |
6136 | ||
6137 | /* Get the next char to narrow between result and bind(c). */ | |
6138 | gfc_gobble_whitespace (); | |
8fc541d3 | 6139 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6140 | |
1eabf70a TB |
6141 | /* C binding names are not allowed for internal procedures. */ |
6142 | if (gfc_current_state () == COMP_CONTAINS | |
6143 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6144 | allow_binding_name = false; | |
6145 | else | |
6146 | allow_binding_name = true; | |
6147 | ||
a8b3b0b6 CR |
6148 | switch (peek_char) |
6149 | { | |
6150 | case 'r': | |
6151 | /* Look for result clause. */ | |
6152 | is_result = match_result (sym, result); | |
6153 | if (is_result == MATCH_YES) | |
6154 | { | |
6155 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6156 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6157 | /* We've found the result clause and possibly bind(c). */ |
6158 | found_match = MATCH_YES; | |
6159 | } | |
6160 | else | |
6161 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6162 | found_match = is_result; |
a8b3b0b6 CR |
6163 | break; |
6164 | case 'b': | |
6165 | /* Look for bind(c) first. */ | |
1eabf70a | 6166 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6167 | if (is_bind_c == MATCH_YES) |
6168 | { | |
6169 | /* Now see if a result clause followed it. */ | |
6170 | is_result = match_result (sym, result); | |
6171 | found_match = MATCH_YES; | |
6172 | } | |
6173 | else | |
6174 | { | |
6175 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6176 | found_match = MATCH_ERROR; | |
6177 | } | |
6178 | break; | |
6179 | default: | |
6180 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6181 | found_match = MATCH_ERROR; | |
6182 | break; | |
6183 | } | |
6184 | ||
a8b3b0b6 | 6185 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6186 | { |
1eabf70a | 6187 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6188 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6189 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6190 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6191 | "at %L may not be specified for an internal " | |
6192 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6193 | return MATCH_ERROR; |
6194 | ||
524af0d6 | 6195 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6196 | return MATCH_ERROR; |
6197 | } | |
f5acf0f2 | 6198 | |
a8b3b0b6 CR |
6199 | return found_match; |
6200 | } | |
6201 | ||
6202 | ||
3070bab4 JW |
6203 | /* Procedure pointer return value without RESULT statement: |
6204 | Add "hidden" result variable named "ppr@". */ | |
6205 | ||
524af0d6 | 6206 | static bool |
3070bab4 JW |
6207 | add_hidden_procptr_result (gfc_symbol *sym) |
6208 | { | |
6209 | bool case1,case2; | |
6210 | ||
6211 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6212 | return false; |
3070bab4 JW |
6213 | |
6214 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6215 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6216 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6217 | && sym->attr.external; | |
6218 | /* Second usage case: INTERFACE statements. */ | |
6219 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6220 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6221 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6222 | ||
6223 | if (case1 || case2) | |
6224 | { | |
6225 | gfc_symtree *stree; | |
6226 | if (case1) | |
08a6b8e0 | 6227 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 6228 | else if (case2) |
c73b6478 JW |
6229 | { |
6230 | gfc_symtree *st2; | |
08a6b8e0 | 6231 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6232 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6233 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6234 | stree->n.sym->refs++; |
c73b6478 | 6235 | } |
3070bab4 JW |
6236 | sym->result = stree->n.sym; |
6237 | ||
6238 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6239 | sym->result->attr.pointer = sym->attr.pointer; | |
6240 | sym->result->attr.external = sym->attr.external; | |
6241 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6242 | sym->result->ts = sym->ts; |
3070bab4 JW |
6243 | sym->attr.proc_pointer = 0; |
6244 | sym->attr.pointer = 0; | |
6245 | sym->attr.external = 0; | |
6246 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6247 | { | |
6248 | sym->result->attr.pointer = 0; | |
6249 | sym->result->attr.proc_pointer = 1; | |
6250 | } | |
6251 | ||
6252 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6253 | } | |
6254 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6255 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6256 | && sym->result && sym->result != sym && sym->result->attr.external | |
6257 | && sym == gfc_current_ns->proc_name | |
6258 | && sym == sym->result->ns->proc_name | |
6259 | && strcmp ("ppr@", sym->result->name) == 0) | |
6260 | { | |
6261 | sym->result->attr.proc_pointer = 1; | |
6262 | sym->attr.pointer = 0; | |
524af0d6 | 6263 | return true; |
3070bab4 JW |
6264 | } |
6265 | else | |
524af0d6 | 6266 | return false; |
3070bab4 JW |
6267 | } |
6268 | ||
6269 | ||
713485cc JW |
6270 | /* Match the interface for a PROCEDURE declaration, |
6271 | including brackets (R1212). */ | |
69773742 JW |
6272 | |
6273 | static match | |
713485cc | 6274 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6275 | { |
6276 | match m; | |
3276e0b3 | 6277 | gfc_symtree *st; |
69773742 | 6278 | locus old_loc, entry_loc; |
3276e0b3 PT |
6279 | gfc_namespace *old_ns = gfc_current_ns; |
6280 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6281 | |
3276e0b3 | 6282 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6283 | gfc_clear_ts (¤t_ts); |
6284 | ||
6285 | if (gfc_match (" (") != MATCH_YES) | |
6286 | { | |
6287 | gfc_current_locus = entry_loc; | |
6288 | return MATCH_NO; | |
6289 | } | |
6290 | ||
6291 | /* Get the type spec. for the procedure interface. */ | |
6292 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6293 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6294 | gfc_gobble_whitespace (); |
8fc541d3 | 6295 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6296 | goto got_ts; |
6297 | ||
6298 | if (m == MATCH_ERROR) | |
6299 | return m; | |
6300 | ||
3276e0b3 | 6301 | /* Procedure interface is itself a procedure. */ |
69773742 | 6302 | gfc_current_locus = old_loc; |
3276e0b3 | 6303 | m = gfc_match_name (name); |
69773742 | 6304 | |
3276e0b3 PT |
6305 | /* First look to see if it is already accessible in the current |
6306 | namespace because it is use associated or contained. */ | |
6307 | st = NULL; | |
6308 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6309 | return MATCH_ERROR; | |
6310 | ||
6311 | /* If it is still not found, then try the parent namespace, if it | |
6312 | exists and create the symbol there if it is still not found. */ | |
6313 | if (gfc_current_ns->parent) | |
6314 | gfc_current_ns = gfc_current_ns->parent; | |
6315 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6316 | return MATCH_ERROR; | |
6317 | ||
6318 | gfc_current_ns = old_ns; | |
6319 | *proc_if = st->n.sym; | |
69773742 | 6320 | |
713485cc | 6321 | if (*proc_if) |
69773742 | 6322 | { |
713485cc | 6323 | (*proc_if)->refs++; |
bb343a6c TB |
6324 | /* Resolve interface if possible. That way, attr.procedure is only set |
6325 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6326 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6327 | while ((*proc_if)->ts.interface |
6328 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6329 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6330 | |
0e8d854e JW |
6331 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6332 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6333 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6334 | (*proc_if)->name, NULL)) |
0e8d854e | 6335 | return MATCH_ERROR; |
69773742 JW |
6336 | } |
6337 | ||
6338 | got_ts: | |
69773742 JW |
6339 | if (gfc_match (" )") != MATCH_YES) |
6340 | { | |
6341 | gfc_current_locus = entry_loc; | |
6342 | return MATCH_NO; | |
6343 | } | |
6344 | ||
713485cc JW |
6345 | return MATCH_YES; |
6346 | } | |
6347 | ||
6348 | ||
6349 | /* Match a PROCEDURE declaration (R1211). */ | |
6350 | ||
6351 | static match | |
6352 | match_procedure_decl (void) | |
6353 | { | |
6354 | match m; | |
6355 | gfc_symbol *sym, *proc_if = NULL; | |
6356 | int num; | |
6357 | gfc_expr *initializer = NULL; | |
6358 | ||
1cc0e193 | 6359 | /* Parse interface (with brackets). */ |
713485cc JW |
6360 | m = match_procedure_interface (&proc_if); |
6361 | if (m != MATCH_YES) | |
6362 | return m; | |
6363 | ||
6364 | /* Parse attributes (with colons). */ | |
69773742 JW |
6365 | m = match_attr_spec(); |
6366 | if (m == MATCH_ERROR) | |
6367 | return MATCH_ERROR; | |
6368 | ||
0859be17 TB |
6369 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6370 | { | |
6371 | current_attr.is_bind_c = 1; | |
6372 | has_name_equals = 0; | |
6373 | curr_binding_label = NULL; | |
6374 | } | |
6375 | ||
69773742 JW |
6376 | /* Get procedure symbols. */ |
6377 | for(num=1;;num++) | |
6378 | { | |
69773742 JW |
6379 | m = gfc_match_symbol (&sym, 0); |
6380 | if (m == MATCH_NO) | |
6381 | goto syntax; | |
6382 | else if (m == MATCH_ERROR) | |
6383 | return m; | |
6384 | ||
6385 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6386 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6387 | return MATCH_ERROR; |
6388 | ||
6389 | if (sym->attr.is_bind_c) | |
6390 | { | |
6391 | /* Check for C1218. */ | |
6392 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6393 | { | |
6394 | gfc_error ("BIND(C) attribute at %C requires " | |
6395 | "an interface with BIND(C)"); | |
6396 | return MATCH_ERROR; | |
6397 | } | |
6398 | /* Check for C1217. */ | |
6399 | if (has_name_equals && sym->attr.pointer) | |
6400 | { | |
6401 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6402 | "POINTER attribute at %C"); | |
6403 | return MATCH_ERROR; | |
6404 | } | |
6405 | if (has_name_equals && sym->attr.dummy) | |
6406 | { | |
6407 | gfc_error ("Dummy procedure at %C may not have " | |
6408 | "BIND(C) attribute with NAME"); | |
6409 | return MATCH_ERROR; | |
6410 | } | |
6411 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6412 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6413 | return MATCH_ERROR; |
6414 | } | |
6415 | ||
524af0d6 | 6416 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6417 | return MATCH_ERROR; |
3070bab4 | 6418 | |
524af0d6 | 6419 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6420 | sym = sym->result; |
6421 | ||
524af0d6 | 6422 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6423 | return MATCH_ERROR; |
6424 | ||
6425 | /* Set interface. */ | |
6426 | if (proc_if != NULL) | |
6cc309c9 | 6427 | { |
1d146030 JW |
6428 | if (sym->ts.type != BT_UNKNOWN) |
6429 | { | |
c4100eae | 6430 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6431 | sym->name, &gfc_current_locus, |
6432 | gfc_basic_typename (sym->ts.type)); | |
6433 | return MATCH_ERROR; | |
6434 | } | |
32d99e68 | 6435 | sym->ts.interface = proc_if; |
6cc309c9 | 6436 | sym->attr.untyped = 1; |
c73b6478 | 6437 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6438 | } |
69773742 JW |
6439 | else if (current_ts.type != BT_UNKNOWN) |
6440 | { | |
524af0d6 | 6441 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6442 | return MATCH_ERROR; |
32d99e68 JW |
6443 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6444 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6445 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6446 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6447 | sym->attr.function = 1; |
c73b6478 | 6448 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6449 | } |
6450 | ||
8fb74da4 JW |
6451 | if (gfc_match (" =>") == MATCH_YES) |
6452 | { | |
6453 | if (!current_attr.pointer) | |
6454 | { | |
6455 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6456 | m = MATCH_ERROR; | |
6457 | goto cleanup; | |
6458 | } | |
6459 | ||
80f95228 | 6460 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6461 | if (m != MATCH_YES) |
6462 | goto cleanup; | |
6463 | ||
524af0d6 | 6464 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6465 | goto cleanup; |
6466 | ||
6467 | } | |
6468 | ||
69773742 JW |
6469 | if (gfc_match_eos () == MATCH_YES) |
6470 | return MATCH_YES; | |
6471 | if (gfc_match_char (',') != MATCH_YES) | |
6472 | goto syntax; | |
6473 | } | |
6474 | ||
6475 | syntax: | |
6476 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6477 | return MATCH_ERROR; | |
8fb74da4 JW |
6478 | |
6479 | cleanup: | |
6480 | /* Free stuff up and return. */ | |
6481 | gfc_free_expr (initializer); | |
6482 | return m; | |
69773742 JW |
6483 | } |
6484 | ||
6485 | ||
713485cc JW |
6486 | static match |
6487 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6488 | ||
6489 | ||
6490 | /* Match a procedure pointer component declaration (R445). */ | |
6491 | ||
6492 | static match | |
6493 | match_ppc_decl (void) | |
6494 | { | |
6495 | match m; | |
6496 | gfc_symbol *proc_if = NULL; | |
6497 | gfc_typespec ts; | |
6498 | int num; | |
6499 | gfc_component *c; | |
6500 | gfc_expr *initializer = NULL; | |
6501 | gfc_typebound_proc* tb; | |
6502 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6503 | ||
6504 | /* Parse interface (with brackets). */ | |
6505 | m = match_procedure_interface (&proc_if); | |
6506 | if (m != MATCH_YES) | |
6507 | goto syntax; | |
6508 | ||
6509 | /* Parse attributes. */ | |
6510 | tb = XCNEW (gfc_typebound_proc); | |
6511 | tb->where = gfc_current_locus; | |
6512 | m = match_binding_attributes (tb, false, true); | |
6513 | if (m == MATCH_ERROR) | |
6514 | return m; | |
6515 | ||
713485cc JW |
6516 | gfc_clear_attr (¤t_attr); |
6517 | current_attr.procedure = 1; | |
6518 | current_attr.proc_pointer = 1; | |
6519 | current_attr.access = tb->access; | |
6520 | current_attr.flavor = FL_PROCEDURE; | |
6521 | ||
6522 | /* Match the colons (required). */ | |
6523 | if (gfc_match (" ::") != MATCH_YES) | |
6524 | { | |
a4d9b221 | 6525 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6526 | return MATCH_ERROR; |
6527 | } | |
6528 | ||
6529 | /* Check for C450. */ | |
6530 | if (!tb->nopass && proc_if == NULL) | |
6531 | { | |
6532 | gfc_error("NOPASS or explicit interface required at %C"); | |
6533 | return MATCH_ERROR; | |
6534 | } | |
6535 | ||
524af0d6 | 6536 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6537 | return MATCH_ERROR; |
6538 | ||
713485cc JW |
6539 | /* Match PPC names. */ |
6540 | ts = current_ts; | |
6541 | for(num=1;;num++) | |
6542 | { | |
6543 | m = gfc_match_name (name); | |
6544 | if (m == MATCH_NO) | |
6545 | goto syntax; | |
6546 | else if (m == MATCH_ERROR) | |
6547 | return m; | |
6548 | ||
524af0d6 | 6549 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6550 | return MATCH_ERROR; |
6551 | ||
6552 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6553 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6554 | return MATCH_ERROR; |
6555 | ||
524af0d6 | 6556 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6557 | return MATCH_ERROR; |
6558 | ||
524af0d6 | 6559 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6560 | return MATCH_ERROR; |
6561 | ||
2be03814 TB |
6562 | if (num == 1) |
6563 | c->tb = tb; | |
6564 | else | |
6565 | { | |
6566 | c->tb = XCNEW (gfc_typebound_proc); | |
6567 | c->tb->where = gfc_current_locus; | |
6568 | *c->tb = *tb; | |
6569 | } | |
90661f26 | 6570 | |
713485cc JW |
6571 | /* Set interface. */ |
6572 | if (proc_if != NULL) | |
6573 | { | |
6574 | c->ts.interface = proc_if; | |
6575 | c->attr.untyped = 1; | |
6576 | c->attr.if_source = IFSRC_IFBODY; | |
6577 | } | |
6578 | else if (ts.type != BT_UNKNOWN) | |
6579 | { | |
6580 | c->ts = ts; | |
6581 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 6582 | c->ts.interface->result = c->ts.interface; |
713485cc | 6583 | c->ts.interface->ts = ts; |
d91909c0 | 6584 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 6585 | c->ts.interface->attr.function = 1; |
d91909c0 | 6586 | c->attr.function = 1; |
713485cc JW |
6587 | c->attr.if_source = IFSRC_UNKNOWN; |
6588 | } | |
6589 | ||
6590 | if (gfc_match (" =>") == MATCH_YES) | |
6591 | { | |
80f95228 | 6592 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
6593 | if (m != MATCH_YES) |
6594 | { | |
6595 | gfc_free_expr (initializer); | |
6596 | return m; | |
6597 | } | |
6598 | c->initializer = initializer; | |
6599 | } | |
6600 | ||
6601 | if (gfc_match_eos () == MATCH_YES) | |
6602 | return MATCH_YES; | |
6603 | if (gfc_match_char (',') != MATCH_YES) | |
6604 | goto syntax; | |
6605 | } | |
6606 | ||
6607 | syntax: | |
6608 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6609 | return MATCH_ERROR; | |
6610 | } | |
6611 | ||
6612 | ||
69773742 JW |
6613 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6614 | ||
6615 | static match | |
6616 | match_procedure_in_interface (void) | |
6617 | { | |
6618 | match m; | |
6619 | gfc_symbol *sym; | |
6620 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 6621 | locus old_locus; |
69773742 JW |
6622 | |
6623 | if (current_interface.type == INTERFACE_NAMELESS | |
6624 | || current_interface.type == INTERFACE_ABSTRACT) | |
6625 | { | |
6626 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6627 | return MATCH_ERROR; | |
6628 | } | |
6629 | ||
a6fcd41a TB |
6630 | /* Check if the F2008 optional double colon appears. */ |
6631 | gfc_gobble_whitespace (); | |
6632 | old_locus = gfc_current_locus; | |
6633 | if (gfc_match ("::") == MATCH_YES) | |
6634 | { | |
524af0d6 JB |
6635 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6636 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
6637 | return MATCH_ERROR; |
6638 | } | |
6639 | else | |
6640 | gfc_current_locus = old_locus; | |
6641 | ||
69773742 JW |
6642 | for(;;) |
6643 | { | |
6644 | m = gfc_match_name (name); | |
6645 | if (m == MATCH_NO) | |
6646 | goto syntax; | |
6647 | else if (m == MATCH_ERROR) | |
6648 | return m; | |
6649 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6650 | return MATCH_ERROR; | |
6651 | ||
524af0d6 | 6652 | if (!gfc_add_interface (sym)) |
69773742 JW |
6653 | return MATCH_ERROR; |
6654 | ||
69773742 JW |
6655 | if (gfc_match_eos () == MATCH_YES) |
6656 | break; | |
6657 | if (gfc_match_char (',') != MATCH_YES) | |
6658 | goto syntax; | |
6659 | } | |
6660 | ||
6661 | return MATCH_YES; | |
6662 | ||
6663 | syntax: | |
6664 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6665 | return MATCH_ERROR; | |
6666 | } | |
6667 | ||
6668 | ||
6669 | /* General matcher for PROCEDURE declarations. */ | |
6670 | ||
30b608eb DK |
6671 | static match match_procedure_in_type (void); |
6672 | ||
69773742 JW |
6673 | match |
6674 | gfc_match_procedure (void) | |
6675 | { | |
6676 | match m; | |
6677 | ||
6678 | switch (gfc_current_state ()) | |
6679 | { | |
6680 | case COMP_NONE: | |
6681 | case COMP_PROGRAM: | |
6682 | case COMP_MODULE: | |
4668d6f9 | 6683 | case COMP_SUBMODULE: |
69773742 JW |
6684 | case COMP_SUBROUTINE: |
6685 | case COMP_FUNCTION: | |
3547d57e | 6686 | case COMP_BLOCK: |
69773742 JW |
6687 | m = match_procedure_decl (); |
6688 | break; | |
6689 | case COMP_INTERFACE: | |
6690 | m = match_procedure_in_interface (); | |
6691 | break; | |
6692 | case COMP_DERIVED: | |
713485cc JW |
6693 | m = match_ppc_decl (); |
6694 | break; | |
30b608eb DK |
6695 | case COMP_DERIVED_CONTAINS: |
6696 | m = match_procedure_in_type (); | |
6697 | break; | |
69773742 JW |
6698 | default: |
6699 | return MATCH_NO; | |
6700 | } | |
6701 | ||
6702 | if (m != MATCH_YES) | |
6703 | return m; | |
6704 | ||
524af0d6 | 6705 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
6706 | return MATCH_ERROR; |
6707 | ||
6708 | return m; | |
6709 | } | |
6710 | ||
6711 | ||
c3005b0f DK |
6712 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
6713 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
6714 | parser-state-stack to find out whether we're in a module. */ | |
6715 | ||
6716 | static void | |
73e42eef | 6717 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
6718 | { |
6719 | bool in_module; | |
6720 | ||
6721 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
6722 | && (gfc_state_stack->previous->state == COMP_MODULE |
6723 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
6724 | |
6725 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
6726 | } | |
6727 | ||
6728 | ||
6de9cd9a DN |
6729 | /* Match a function declaration. */ |
6730 | ||
6731 | match | |
6732 | gfc_match_function_decl (void) | |
6733 | { | |
6734 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6735 | gfc_symbol *sym, *result; | |
6736 | locus old_loc; | |
6737 | match m; | |
a8b3b0b6 | 6738 | match suffix_match; |
f5acf0f2 | 6739 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
6740 | |
6741 | if (gfc_current_state () != COMP_NONE | |
6742 | && gfc_current_state () != COMP_INTERFACE | |
6743 | && gfc_current_state () != COMP_CONTAINS) | |
6744 | return MATCH_NO; | |
6745 | ||
6746 | gfc_clear_ts (¤t_ts); | |
6747 | ||
63645982 | 6748 | old_loc = gfc_current_locus; |
6de9cd9a | 6749 | |
1c8bcdf7 | 6750 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
6751 | if (m != MATCH_YES) |
6752 | { | |
63645982 | 6753 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6754 | return m; |
6755 | } | |
6756 | ||
6757 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
6758 | { | |
63645982 | 6759 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6760 | return MATCH_NO; |
6761 | } | |
4668d6f9 | 6762 | |
1a492601 | 6763 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 6764 | return MATCH_ERROR; |
3070bab4 | 6765 | |
524af0d6 | 6766 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6767 | sym = sym->result; |
6768 | ||
4668d6f9 PT |
6769 | if (current_attr.module_procedure) |
6770 | sym->attr.module_procedure = 1; | |
6771 | ||
6de9cd9a DN |
6772 | gfc_new_block = sym; |
6773 | ||
6774 | m = gfc_match_formal_arglist (sym, 0, 0); | |
6775 | if (m == MATCH_NO) | |
2b9a33ae TS |
6776 | { |
6777 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 6778 | "definition at %C"); |
2b9a33ae TS |
6779 | m = MATCH_ERROR; |
6780 | goto cleanup; | |
6781 | } | |
6de9cd9a DN |
6782 | else if (m == MATCH_ERROR) |
6783 | goto cleanup; | |
6784 | ||
6785 | result = NULL; | |
6786 | ||
a8b3b0b6 CR |
6787 | /* According to the draft, the bind(c) and result clause can |
6788 | come in either order after the formal_arg_list (i.e., either | |
6789 | can be first, both can exist together or by themselves or neither | |
6790 | one). Therefore, the match_result can't match the end of the | |
6791 | string, and check for the bind(c) or result clause in either order. */ | |
6792 | found_match = gfc_match_eos (); | |
6793 | ||
6794 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
6795 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6796 | not allowed for procedures. */ | |
6797 | if (sym->attr.is_bind_c == 1) | |
6798 | { | |
6799 | sym->attr.is_bind_c = 0; | |
6800 | if (sym->old_symbol != NULL) | |
6801 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6802 | "variables or common blocks", | |
6803 | &(sym->old_symbol->declared_at)); | |
6804 | else | |
6805 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6806 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
6807 | } |
6808 | ||
a8b3b0b6 | 6809 | if (found_match != MATCH_YES) |
6de9cd9a | 6810 | { |
a8b3b0b6 CR |
6811 | /* If we haven't found the end-of-statement, look for a suffix. */ |
6812 | suffix_match = gfc_match_suffix (sym, &result); | |
6813 | if (suffix_match == MATCH_YES) | |
6814 | /* Need to get the eos now. */ | |
6815 | found_match = gfc_match_eos (); | |
6816 | else | |
6817 | found_match = suffix_match; | |
6de9cd9a DN |
6818 | } |
6819 | ||
a8b3b0b6 CR |
6820 | if(found_match != MATCH_YES) |
6821 | m = MATCH_ERROR; | |
6de9cd9a DN |
6822 | else |
6823 | { | |
a8b3b0b6 CR |
6824 | /* Make changes to the symbol. */ |
6825 | m = MATCH_ERROR; | |
f5acf0f2 | 6826 | |
524af0d6 | 6827 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 6828 | goto cleanup; |
f5acf0f2 | 6829 | |
70112e2a | 6830 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 6831 | goto cleanup; |
6de9cd9a | 6832 | |
70112e2a PT |
6833 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6834 | { | |
6835 | if(!sym->attr.module_procedure) | |
6836 | goto cleanup; | |
6837 | else | |
6838 | gfc_error_check (); | |
6839 | } | |
6840 | ||
a99d95a2 | 6841 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 6842 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
6843 | sym->declared_at = old_loc; |
6844 | if (current_ts.type != BT_UNKNOWN) | |
6845 | current_ts.kind = -1; | |
6846 | else | |
6847 | current_ts.kind = 0; | |
1c8bcdf7 | 6848 | |
a8b3b0b6 CR |
6849 | if (result == NULL) |
6850 | { | |
6de7294f | 6851 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6852 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6853 | goto cleanup; |
a8b3b0b6 CR |
6854 | sym->result = sym; |
6855 | } | |
6856 | else | |
6857 | { | |
6de7294f | 6858 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6859 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6860 | goto cleanup; |
a8b3b0b6 CR |
6861 | sym->result = result; |
6862 | } | |
6863 | ||
c3005b0f | 6864 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 6865 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 6866 | |
a8b3b0b6 CR |
6867 | return MATCH_YES; |
6868 | } | |
6de9cd9a DN |
6869 | |
6870 | cleanup: | |
63645982 | 6871 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6872 | return m; |
6873 | } | |
6874 | ||
636dff67 SK |
6875 | |
6876 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
6877 | pass the name of the entry, rather than the gfc_current_block name, and | |
6878 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
6879 | |
6880 | static bool | |
3a43b5b3 TB |
6881 | add_global_entry (const char *name, const char *binding_label, bool sub, |
6882 | locus *where) | |
68ea355b PT |
6883 | { |
6884 | gfc_gsymbol *s; | |
32e8bb8e | 6885 | enum gfc_symbol_type type; |
68ea355b | 6886 | |
7389bce6 | 6887 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 6888 | |
f11de7c5 TB |
6889 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
6890 | name is a global identifier. */ | |
6891 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 6892 | { |
f11de7c5 TB |
6893 | s = gfc_get_gsymbol (name); |
6894 | ||
6895 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6896 | { | |
3a43b5b3 | 6897 | gfc_global_used (s, where); |
f11de7c5 TB |
6898 | return false; |
6899 | } | |
6900 | else | |
6901 | { | |
6902 | s->type = type; | |
77f8682b | 6903 | s->sym_name = name; |
3a43b5b3 | 6904 | s->where = *where; |
f11de7c5 TB |
6905 | s->defined = 1; |
6906 | s->ns = gfc_current_ns; | |
6907 | } | |
68ea355b | 6908 | } |
f11de7c5 TB |
6909 | |
6910 | /* Don't add the symbol multiple times. */ | |
6911 | if (binding_label | |
6912 | && (!gfc_notification_std (GFC_STD_F2008) | |
6913 | || strcmp (name, binding_label) != 0)) | |
6914 | { | |
6915 | s = gfc_get_gsymbol (binding_label); | |
6916 | ||
6917 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6918 | { | |
3a43b5b3 | 6919 | gfc_global_used (s, where); |
f11de7c5 TB |
6920 | return false; |
6921 | } | |
6922 | else | |
6923 | { | |
6924 | s->type = type; | |
77f8682b | 6925 | s->sym_name = name; |
f11de7c5 | 6926 | s->binding_label = binding_label; |
3a43b5b3 | 6927 | s->where = *where; |
f11de7c5 TB |
6928 | s->defined = 1; |
6929 | s->ns = gfc_current_ns; | |
6930 | } | |
6931 | } | |
6932 | ||
6933 | return true; | |
68ea355b | 6934 | } |
6de9cd9a | 6935 | |
636dff67 | 6936 | |
6de9cd9a DN |
6937 | /* Match an ENTRY statement. */ |
6938 | ||
6939 | match | |
6940 | gfc_match_entry (void) | |
6941 | { | |
3d79abbd PB |
6942 | gfc_symbol *proc; |
6943 | gfc_symbol *result; | |
6944 | gfc_symbol *entry; | |
6de9cd9a DN |
6945 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
6946 | gfc_compile_state state; | |
6947 | match m; | |
3d79abbd | 6948 | gfc_entry_list *el; |
c96cfa49 | 6949 | locus old_loc; |
1a492601 | 6950 | bool module_procedure; |
bc3e7a8c TB |
6951 | char peek_char; |
6952 | match is_bind_c; | |
6de9cd9a DN |
6953 | |
6954 | m = gfc_match_name (name); | |
6955 | if (m != MATCH_YES) | |
6956 | return m; | |
6957 | ||
524af0d6 | 6958 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
6959 | return MATCH_ERROR; |
6960 | ||
3d79abbd | 6961 | state = gfc_current_state (); |
4c93c95a | 6962 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 6963 | { |
4c93c95a FXC |
6964 | switch (state) |
6965 | { | |
6966 | case COMP_PROGRAM: | |
6967 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
6968 | break; | |
6969 | case COMP_MODULE: | |
6970 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
6971 | break; | |
4668d6f9 PT |
6972 | case COMP_SUBMODULE: |
6973 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
6974 | break; | |
4c93c95a | 6975 | case COMP_BLOCK_DATA: |
636dff67 SK |
6976 | gfc_error ("ENTRY statement at %C cannot appear within " |
6977 | "a BLOCK DATA"); | |
4c93c95a FXC |
6978 | break; |
6979 | case COMP_INTERFACE: | |
636dff67 SK |
6980 | gfc_error ("ENTRY statement at %C cannot appear within " |
6981 | "an INTERFACE"); | |
4c93c95a | 6982 | break; |
f6288c24 FR |
6983 | case COMP_STRUCTURE: |
6984 | gfc_error ("ENTRY statement at %C cannot appear within " | |
6985 | "a STRUCTURE block"); | |
6986 | break; | |
4c93c95a | 6987 | case COMP_DERIVED: |
636dff67 SK |
6988 | gfc_error ("ENTRY statement at %C cannot appear within " |
6989 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
6990 | break; |
6991 | case COMP_IF: | |
636dff67 SK |
6992 | gfc_error ("ENTRY statement at %C cannot appear within " |
6993 | "an IF-THEN block"); | |
4c93c95a FXC |
6994 | break; |
6995 | case COMP_DO: | |
8c6a85e3 | 6996 | case COMP_DO_CONCURRENT: |
636dff67 SK |
6997 | gfc_error ("ENTRY statement at %C cannot appear within " |
6998 | "a DO block"); | |
4c93c95a FXC |
6999 | break; |
7000 | case COMP_SELECT: | |
636dff67 SK |
7001 | gfc_error ("ENTRY statement at %C cannot appear within " |
7002 | "a SELECT block"); | |
4c93c95a FXC |
7003 | break; |
7004 | case COMP_FORALL: | |
636dff67 SK |
7005 | gfc_error ("ENTRY statement at %C cannot appear within " |
7006 | "a FORALL block"); | |
4c93c95a FXC |
7007 | break; |
7008 | case COMP_WHERE: | |
636dff67 SK |
7009 | gfc_error ("ENTRY statement at %C cannot appear within " |
7010 | "a WHERE block"); | |
4c93c95a FXC |
7011 | break; |
7012 | case COMP_CONTAINS: | |
636dff67 SK |
7013 | gfc_error ("ENTRY statement at %C cannot appear within " |
7014 | "a contained subprogram"); | |
4c93c95a FXC |
7015 | break; |
7016 | default: | |
fce523bf | 7017 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7018 | } |
3d79abbd PB |
7019 | return MATCH_ERROR; |
7020 | } | |
7021 | ||
5f0ba745 SK |
7022 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7023 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7024 | { | |
7025 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7026 | return MATCH_ERROR; | |
7027 | } | |
7028 | ||
1a492601 | 7029 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7030 | && gfc_current_ns->parent->proc_name |
7031 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7032 | == FL_MODULE; | |
1a492601 | 7033 | |
3d79abbd PB |
7034 | if (gfc_current_ns->parent != NULL |
7035 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7036 | && !module_procedure) |
3d79abbd PB |
7037 | { |
7038 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7039 | "contained procedure"); | |
7040 | return MATCH_ERROR; | |
7041 | } | |
7042 | ||
1a492601 PT |
7043 | /* Module function entries need special care in get_proc_name |
7044 | because previous references within the function will have | |
7045 | created symbols attached to the current namespace. */ | |
7046 | if (get_proc_name (name, &entry, | |
7047 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7048 | && module_procedure)) |
6de9cd9a DN |
7049 | return MATCH_ERROR; |
7050 | ||
3d79abbd PB |
7051 | proc = gfc_current_block (); |
7052 | ||
bc3e7a8c TB |
7053 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7054 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7055 | not allowed for procedures. */ | |
7056 | if (entry->attr.is_bind_c == 1) | |
7057 | { | |
7058 | entry->attr.is_bind_c = 0; | |
7059 | if (entry->old_symbol != NULL) | |
7060 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7061 | "variables or common blocks", | |
7062 | &(entry->old_symbol->declared_at)); | |
7063 | else | |
7064 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7065 | "variables or common blocks", &gfc_current_locus); | |
7066 | } | |
f5acf0f2 | 7067 | |
bc3e7a8c TB |
7068 | /* Check what next non-whitespace character is so we can tell if there |
7069 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7070 | old_loc = gfc_current_locus; |
bc3e7a8c | 7071 | gfc_gobble_whitespace (); |
8fc541d3 | 7072 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7073 | |
3d79abbd | 7074 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7075 | { |
6de9cd9a DN |
7076 | m = gfc_match_formal_arglist (entry, 0, 1); |
7077 | if (m != MATCH_YES) | |
7078 | return MATCH_ERROR; | |
7079 | ||
1eabf70a TB |
7080 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7081 | never be an internal procedure. */ | |
7082 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7083 | if (is_bind_c == MATCH_ERROR) |
7084 | return MATCH_ERROR; | |
7085 | if (is_bind_c == MATCH_YES) | |
7086 | { | |
7087 | if (peek_char != '(') | |
7088 | { | |
7089 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7090 | return MATCH_ERROR; | |
7091 | } | |
70112e2a | 7092 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 7093 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
7094 | return MATCH_ERROR; |
7095 | } | |
7096 | ||
f11de7c5 | 7097 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7098 | && !add_global_entry (name, entry->binding_label, true, |
7099 | &old_loc)) | |
f11de7c5 TB |
7100 | return MATCH_ERROR; |
7101 | ||
7102 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7103 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7104 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7105 | return MATCH_ERROR; |
3d79abbd PB |
7106 | } |
7107 | else | |
7108 | { | |
c96cfa49 | 7109 | /* An entry in a function. |
636dff67 SK |
7110 | We need to take special care because writing |
7111 | ENTRY f() | |
7112 | as | |
7113 | ENTRY f | |
7114 | is allowed, whereas | |
7115 | ENTRY f() RESULT (r) | |
7116 | can't be written as | |
7117 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7118 | if (gfc_match_eos () == MATCH_YES) |
7119 | { | |
7120 | gfc_current_locus = old_loc; | |
7121 | /* Match the empty argument list, and add the interface to | |
7122 | the symbol. */ | |
7123 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7124 | } | |
7125 | else | |
7126 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7127 | ||
6de9cd9a DN |
7128 | if (m != MATCH_YES) |
7129 | return MATCH_ERROR; | |
7130 | ||
6de9cd9a DN |
7131 | result = NULL; |
7132 | ||
7133 | if (gfc_match_eos () == MATCH_YES) | |
7134 | { | |
524af0d6 JB |
7135 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7136 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7137 | return MATCH_ERROR; |
7138 | ||
d198b59a | 7139 | entry->result = entry; |
6de9cd9a DN |
7140 | } |
7141 | else | |
7142 | { | |
bc3e7a8c | 7143 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7144 | if (m == MATCH_NO) |
7145 | gfc_syntax_error (ST_ENTRY); | |
7146 | if (m != MATCH_YES) | |
7147 | return MATCH_ERROR; | |
7148 | ||
bc3e7a8c TB |
7149 | if (result) |
7150 | { | |
524af0d6 JB |
7151 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7152 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7153 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7154 | return MATCH_ERROR; |
7155 | entry->result = result; | |
7156 | } | |
7157 | else | |
7158 | { | |
524af0d6 JB |
7159 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7160 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7161 | return MATCH_ERROR; |
7162 | entry->result = entry; | |
7163 | } | |
6de9cd9a | 7164 | } |
f11de7c5 TB |
7165 | |
7166 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7167 | && !add_global_entry (name, entry->binding_label, false, |
7168 | &old_loc)) | |
f11de7c5 | 7169 | return MATCH_ERROR; |
6de9cd9a DN |
7170 | } |
7171 | ||
7172 | if (gfc_match_eos () != MATCH_YES) | |
7173 | { | |
7174 | gfc_syntax_error (ST_ENTRY); | |
7175 | return MATCH_ERROR; | |
7176 | } | |
7177 | ||
3d79abbd PB |
7178 | entry->attr.recursive = proc->attr.recursive; |
7179 | entry->attr.elemental = proc->attr.elemental; | |
7180 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7181 | |
3d79abbd PB |
7182 | el = gfc_get_entry_list (); |
7183 | el->sym = entry; | |
7184 | el->next = gfc_current_ns->entries; | |
7185 | gfc_current_ns->entries = el; | |
7186 | if (el->next) | |
7187 | el->id = el->next->id + 1; | |
7188 | else | |
7189 | el->id = 1; | |
6de9cd9a | 7190 | |
3d79abbd PB |
7191 | new_st.op = EXEC_ENTRY; |
7192 | new_st.ext.entry = el; | |
7193 | ||
7194 | return MATCH_YES; | |
6de9cd9a DN |
7195 | } |
7196 | ||
7197 | ||
7198 | /* Match a subroutine statement, including optional prefixes. */ | |
7199 | ||
7200 | match | |
7201 | gfc_match_subroutine (void) | |
7202 | { | |
7203 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7204 | gfc_symbol *sym; | |
7205 | match m; | |
a8b3b0b6 CR |
7206 | match is_bind_c; |
7207 | char peek_char; | |
1eabf70a | 7208 | bool allow_binding_name; |
6de9cd9a DN |
7209 | |
7210 | if (gfc_current_state () != COMP_NONE | |
7211 | && gfc_current_state () != COMP_INTERFACE | |
7212 | && gfc_current_state () != COMP_CONTAINS) | |
7213 | return MATCH_NO; | |
7214 | ||
1c8bcdf7 | 7215 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7216 | if (m != MATCH_YES) |
7217 | return m; | |
7218 | ||
7219 | m = gfc_match ("subroutine% %n", name); | |
7220 | if (m != MATCH_YES) | |
7221 | return m; | |
7222 | ||
1a492601 | 7223 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7224 | return MATCH_ERROR; |
3070bab4 | 7225 | |
7fcd5ad5 | 7226 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7227 | the symbol existed before. */ |
7fcd5ad5 TB |
7228 | sym->declared_at = gfc_current_locus; |
7229 | ||
4668d6f9 PT |
7230 | if (current_attr.module_procedure) |
7231 | sym->attr.module_procedure = 1; | |
7232 | ||
524af0d6 | 7233 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7234 | sym = sym->result; |
7235 | ||
6de9cd9a DN |
7236 | gfc_new_block = sym; |
7237 | ||
a8b3b0b6 | 7238 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7239 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7240 | gfc_gobble_whitespace (); |
8fc541d3 | 7241 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7242 | |
524af0d6 | 7243 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7244 | return MATCH_ERROR; |
7245 | ||
7246 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7247 | return MATCH_ERROR; | |
7248 | ||
a8b3b0b6 CR |
7249 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7250 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7251 | not allowed for procedures. */ | |
7252 | if (sym->attr.is_bind_c == 1) | |
7253 | { | |
7254 | sym->attr.is_bind_c = 0; | |
7255 | if (sym->old_symbol != NULL) | |
7256 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7257 | "variables or common blocks", | |
7258 | &(sym->old_symbol->declared_at)); | |
7259 | else | |
7260 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7261 | "variables or common blocks", &gfc_current_locus); | |
7262 | } | |
1eabf70a TB |
7263 | |
7264 | /* C binding names are not allowed for internal procedures. */ | |
7265 | if (gfc_current_state () == COMP_CONTAINS | |
7266 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7267 | allow_binding_name = false; | |
7268 | else | |
7269 | allow_binding_name = true; | |
7270 | ||
a8b3b0b6 CR |
7271 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7272 | so, then we need to make sure it's all correct. If it doesn't, | |
7273 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 7274 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7275 | if (is_bind_c == MATCH_ERROR) |
7276 | { | |
7277 | /* There was an attempt at the bind(c), but it was wrong. An | |
7278 | error message should have been printed w/in the gfc_match_bind_c | |
7279 | so here we'll just return the MATCH_ERROR. */ | |
7280 | return MATCH_ERROR; | |
7281 | } | |
7282 | ||
7283 | if (is_bind_c == MATCH_YES) | |
7284 | { | |
1eabf70a | 7285 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7286 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7287 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7288 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7289 | "at %L may not be specified for an internal " | |
7290 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7291 | return MATCH_ERROR; |
7292 | ||
a8b3b0b6 CR |
7293 | if (peek_char != '(') |
7294 | { | |
7295 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7296 | return MATCH_ERROR; | |
7297 | } | |
70112e2a | 7298 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 7299 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
7300 | return MATCH_ERROR; |
7301 | } | |
f5acf0f2 | 7302 | |
6de9cd9a DN |
7303 | if (gfc_match_eos () != MATCH_YES) |
7304 | { | |
7305 | gfc_syntax_error (ST_SUBROUTINE); | |
7306 | return MATCH_ERROR; | |
7307 | } | |
7308 | ||
524af0d6 | 7309 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7310 | { |
7311 | if(!sym->attr.module_procedure) | |
7312 | return MATCH_ERROR; | |
7313 | else | |
7314 | gfc_error_check (); | |
7315 | } | |
6de9cd9a | 7316 | |
c3005b0f | 7317 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7318 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7319 | |
6de9cd9a DN |
7320 | return MATCH_YES; |
7321 | } | |
7322 | ||
7323 | ||
3b37ccd4 FXC |
7324 | /* Check that the NAME identifier in a BIND attribute or statement |
7325 | is conform to C identifier rules. */ | |
7326 | ||
7327 | match | |
7328 | check_bind_name_identifier (char **name) | |
7329 | { | |
7330 | char *n = *name, *p; | |
7331 | ||
7332 | /* Remove leading spaces. */ | |
7333 | while (*n == ' ') | |
7334 | n++; | |
7335 | ||
7336 | /* On an empty string, free memory and set name to NULL. */ | |
7337 | if (*n == '\0') | |
7338 | { | |
7339 | free (*name); | |
7340 | *name = NULL; | |
7341 | return MATCH_YES; | |
7342 | } | |
7343 | ||
7344 | /* Remove trailing spaces. */ | |
7345 | p = n + strlen(n) - 1; | |
7346 | while (*p == ' ') | |
7347 | *(p--) = '\0'; | |
7348 | ||
7349 | /* Insert the identifier into the symbol table. */ | |
7350 | p = xstrdup (n); | |
7351 | free (*name); | |
7352 | *name = p; | |
7353 | ||
7354 | /* Now check that identifier is valid under C rules. */ | |
7355 | if (ISDIGIT (*p)) | |
7356 | { | |
7357 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7358 | return MATCH_ERROR; | |
7359 | } | |
7360 | ||
7361 | for (; *p; p++) | |
7362 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7363 | { | |
7364 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7365 | return MATCH_ERROR; | |
7366 | } | |
7367 | ||
7368 | return MATCH_YES; | |
7369 | } | |
7370 | ||
7371 | ||
a8b3b0b6 CR |
7372 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7373 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7374 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7375 | encounter the BIND(C) before the declaration itself. Return |
7376 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7377 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7378 | or MATCH_YES if the specifier was correct and the binding label and | |
7379 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7380 | current_ts. If allow_binding_name is false, no binding name may be |
7381 | given. */ | |
a8b3b0b6 CR |
7382 | |
7383 | match | |
1eabf70a | 7384 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7385 | { |
3b37ccd4 FXC |
7386 | char *binding_label = NULL; |
7387 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7388 | |
f5acf0f2 | 7389 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7390 | specifier or not. */ |
7391 | has_name_equals = 0; | |
7392 | ||
a8b3b0b6 CR |
7393 | /* This much we have to be able to match, in this order, if |
7394 | there is a bind(c) label. */ | |
7395 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7396 | return MATCH_NO; | |
7397 | ||
7398 | /* Now see if there is a binding label, or if we've reached the | |
7399 | end of the bind(c) attribute without one. */ | |
7400 | if (gfc_match_char (',') == MATCH_YES) | |
7401 | { | |
7402 | if (gfc_match (" name = ") != MATCH_YES) | |
7403 | { | |
7404 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7405 | "at %C"); | |
7406 | /* should give an error message here */ | |
7407 | return MATCH_ERROR; | |
7408 | } | |
7409 | ||
7410 | has_name_equals = 1; | |
7411 | ||
3b37ccd4 FXC |
7412 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7413 | { | |
7414 | gfc_free_expr (e); | |
7415 | return MATCH_ERROR; | |
7416 | } | |
f5acf0f2 | 7417 | |
3b37ccd4 | 7418 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7419 | { |
3b37ccd4 FXC |
7420 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7421 | gfc_free_expr (e); | |
7422 | return MATCH_ERROR; | |
a8b3b0b6 | 7423 | } |
3b37ccd4 FXC |
7424 | |
7425 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7426 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7427 | { |
3b37ccd4 FXC |
7428 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7429 | "default character kind"); | |
7430 | gfc_free_expr(e); | |
7431 | return MATCH_ERROR; | |
a8b3b0b6 | 7432 | } |
3b37ccd4 FXC |
7433 | |
7434 | // Get a C string from the Fortran string constant | |
7435 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7436 | e->value.character.length); | |
7437 | gfc_free_expr(e); | |
7438 | ||
7439 | // Check that it is valid (old gfc_match_name_C) | |
7440 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7441 | return MATCH_ERROR; | |
7442 | } | |
a8b3b0b6 CR |
7443 | |
7444 | /* Get the required right paren. */ | |
7445 | if (gfc_match_char (')') != MATCH_YES) | |
7446 | { | |
7447 | gfc_error ("Missing closing paren for binding label at %C"); | |
7448 | return MATCH_ERROR; | |
7449 | } | |
7450 | ||
1eabf70a TB |
7451 | if (has_name_equals && !allow_binding_name) |
7452 | { | |
7453 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7454 | return MATCH_ERROR; | |
7455 | } | |
7456 | ||
7457 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7458 | { | |
7459 | gfc_error ("For dummy procedure %s, no binding name is " | |
7460 | "allowed in BIND(C) at %C", sym->name); | |
7461 | return MATCH_ERROR; | |
7462 | } | |
7463 | ||
7464 | ||
a8b3b0b6 CR |
7465 | /* Save the binding label to the symbol. If sym is null, we're |
7466 | probably matching the typespec attributes of a declaration and | |
7467 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7468 | if (binding_label) |
a8b3b0b6 CR |
7469 | { |
7470 | if (sym != NULL) | |
62603fae | 7471 | sym->binding_label = binding_label; |
a8b3b0b6 | 7472 | else |
62603fae | 7473 | curr_binding_label = binding_label; |
a8b3b0b6 | 7474 | } |
1eabf70a | 7475 | else if (allow_binding_name) |
a8b3b0b6 CR |
7476 | { |
7477 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7478 | can set the label for it here. |
7479 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7480 | created. */ |
a8b3b0b6 | 7481 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7482 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7483 | } |
9e1d712c | 7484 | |
129d15a3 JW |
7485 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7486 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7487 | { |
7488 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7489 | return MATCH_ERROR; | |
7490 | } | |
7491 | ||
a8b3b0b6 CR |
7492 | return MATCH_YES; |
7493 | } | |
7494 | ||
7495 | ||
1f2959f0 | 7496 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7497 | |
7498 | static int | |
7499 | contained_procedure (void) | |
7500 | { | |
083de129 | 7501 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7502 | |
083de129 TB |
7503 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7504 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7505 | return 1; | |
ddc9ce91 TS |
7506 | |
7507 | return 0; | |
7508 | } | |
7509 | ||
d51347f9 | 7510 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7511 | interoperable with the corresponding C enumeration type, making |
7512 | sure that -fshort-enums is honored. */ | |
7513 | ||
7514 | static void | |
7515 | set_enum_kind(void) | |
7516 | { | |
7517 | enumerator_history *current_history = NULL; | |
7518 | int kind; | |
7519 | int i; | |
7520 | ||
7521 | if (max_enum == NULL || enum_history == NULL) | |
7522 | return; | |
7523 | ||
cab129d1 | 7524 | if (!flag_short_enums) |
d51347f9 TB |
7525 | return; |
7526 | ||
25d8f0a2 TS |
7527 | i = 0; |
7528 | do | |
7529 | { | |
7530 | kind = gfc_integer_kinds[i++].kind; | |
7531 | } | |
d51347f9 | 7532 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7533 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7534 | kind) != ARITH_OK); | |
7535 | ||
7536 | current_history = enum_history; | |
7537 | while (current_history != NULL) | |
7538 | { | |
7539 | current_history->sym->ts.kind = kind; | |
7540 | current_history = current_history->next; | |
7541 | } | |
7542 | } | |
7543 | ||
636dff67 | 7544 | |
6de9cd9a | 7545 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
7546 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7547 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
7548 | |
7549 | match | |
636dff67 | 7550 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
7551 | { |
7552 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7553 | gfc_compile_state state; | |
7554 | locus old_loc; | |
7555 | const char *block_name; | |
7556 | const char *target; | |
ddc9ce91 | 7557 | int eos_ok; |
6de9cd9a | 7558 | match m; |
0cab6b73 TK |
7559 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7560 | gfc_namespace **nsp; | |
63af1586 | 7561 | bool abreviated_modproc_decl = false; |
874108a9 | 7562 | bool got_matching_end = false; |
6de9cd9a | 7563 | |
63645982 | 7564 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7565 | if (gfc_match ("end") != MATCH_YES) |
7566 | return MATCH_NO; | |
7567 | ||
7568 | state = gfc_current_state (); | |
636dff67 SK |
7569 | block_name = gfc_current_block () == NULL |
7570 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 7571 | |
03af1e4c | 7572 | switch (state) |
6de9cd9a | 7573 | { |
03af1e4c DK |
7574 | case COMP_ASSOCIATE: |
7575 | case COMP_BLOCK: | |
3a1fd30c | 7576 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
7577 | block_name = NULL; |
7578 | break; | |
7579 | ||
7580 | case COMP_CONTAINS: | |
7581 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 7582 | state = gfc_state_stack->previous->state; |
636dff67 SK |
7583 | block_name = gfc_state_stack->previous->sym == NULL |
7584 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
7585 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7586 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
7587 | break; |
7588 | ||
7589 | default: | |
7590 | break; | |
6de9cd9a DN |
7591 | } |
7592 | ||
63af1586 PT |
7593 | if (!abreviated_modproc_decl) |
7594 | abreviated_modproc_decl = gfc_current_block () | |
7595 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 7596 | |
6de9cd9a DN |
7597 | switch (state) |
7598 | { | |
7599 | case COMP_NONE: | |
7600 | case COMP_PROGRAM: | |
7601 | *st = ST_END_PROGRAM; | |
7602 | target = " program"; | |
ddc9ce91 | 7603 | eos_ok = 1; |
6de9cd9a DN |
7604 | break; |
7605 | ||
7606 | case COMP_SUBROUTINE: | |
7607 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 7608 | if (!abreviated_modproc_decl) |
6de9cd9a | 7609 | target = " subroutine"; |
4668d6f9 PT |
7610 | else |
7611 | target = " procedure"; | |
ddc9ce91 | 7612 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7613 | break; |
7614 | ||
7615 | case COMP_FUNCTION: | |
7616 | *st = ST_END_FUNCTION; | |
4668d6f9 | 7617 | if (!abreviated_modproc_decl) |
6de9cd9a | 7618 | target = " function"; |
4668d6f9 PT |
7619 | else |
7620 | target = " procedure"; | |
ddc9ce91 | 7621 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7622 | break; |
7623 | ||
7624 | case COMP_BLOCK_DATA: | |
7625 | *st = ST_END_BLOCK_DATA; | |
7626 | target = " block data"; | |
ddc9ce91 | 7627 | eos_ok = 1; |
6de9cd9a DN |
7628 | break; |
7629 | ||
7630 | case COMP_MODULE: | |
7631 | *st = ST_END_MODULE; | |
7632 | target = " module"; | |
ddc9ce91 | 7633 | eos_ok = 1; |
6de9cd9a DN |
7634 | break; |
7635 | ||
4668d6f9 PT |
7636 | case COMP_SUBMODULE: |
7637 | *st = ST_END_SUBMODULE; | |
7638 | target = " submodule"; | |
7639 | eos_ok = 1; | |
7640 | break; | |
7641 | ||
6de9cd9a DN |
7642 | case COMP_INTERFACE: |
7643 | *st = ST_END_INTERFACE; | |
7644 | target = " interface"; | |
ddc9ce91 | 7645 | eos_ok = 0; |
6de9cd9a DN |
7646 | break; |
7647 | ||
f6288c24 FR |
7648 | case COMP_MAP: |
7649 | *st = ST_END_MAP; | |
7650 | target = " map"; | |
7651 | eos_ok = 0; | |
7652 | break; | |
7653 | ||
7654 | case COMP_UNION: | |
7655 | *st = ST_END_UNION; | |
7656 | target = " union"; | |
7657 | eos_ok = 0; | |
7658 | break; | |
7659 | ||
7660 | case COMP_STRUCTURE: | |
7661 | *st = ST_END_STRUCTURE; | |
7662 | target = " structure"; | |
7663 | eos_ok = 0; | |
7664 | break; | |
7665 | ||
6de9cd9a | 7666 | case COMP_DERIVED: |
30b608eb | 7667 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
7668 | *st = ST_END_TYPE; |
7669 | target = " type"; | |
ddc9ce91 | 7670 | eos_ok = 0; |
6de9cd9a DN |
7671 | break; |
7672 | ||
03af1e4c DK |
7673 | case COMP_ASSOCIATE: |
7674 | *st = ST_END_ASSOCIATE; | |
7675 | target = " associate"; | |
7676 | eos_ok = 0; | |
7677 | break; | |
7678 | ||
9abe5e56 DK |
7679 | case COMP_BLOCK: |
7680 | *st = ST_END_BLOCK; | |
7681 | target = " block"; | |
7682 | eos_ok = 0; | |
7683 | break; | |
7684 | ||
6de9cd9a DN |
7685 | case COMP_IF: |
7686 | *st = ST_ENDIF; | |
7687 | target = " if"; | |
ddc9ce91 | 7688 | eos_ok = 0; |
6de9cd9a DN |
7689 | break; |
7690 | ||
7691 | case COMP_DO: | |
8c6a85e3 | 7692 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
7693 | *st = ST_ENDDO; |
7694 | target = " do"; | |
ddc9ce91 | 7695 | eos_ok = 0; |
6de9cd9a DN |
7696 | break; |
7697 | ||
d0a4a61c TB |
7698 | case COMP_CRITICAL: |
7699 | *st = ST_END_CRITICAL; | |
7700 | target = " critical"; | |
7701 | eos_ok = 0; | |
7702 | break; | |
7703 | ||
6de9cd9a | 7704 | case COMP_SELECT: |
cf2b3c22 | 7705 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
7706 | *st = ST_END_SELECT; |
7707 | target = " select"; | |
ddc9ce91 | 7708 | eos_ok = 0; |
6de9cd9a DN |
7709 | break; |
7710 | ||
7711 | case COMP_FORALL: | |
7712 | *st = ST_END_FORALL; | |
7713 | target = " forall"; | |
ddc9ce91 | 7714 | eos_ok = 0; |
6de9cd9a DN |
7715 | break; |
7716 | ||
7717 | case COMP_WHERE: | |
7718 | *st = ST_END_WHERE; | |
7719 | target = " where"; | |
ddc9ce91 | 7720 | eos_ok = 0; |
6de9cd9a DN |
7721 | break; |
7722 | ||
25d8f0a2 TS |
7723 | case COMP_ENUM: |
7724 | *st = ST_END_ENUM; | |
7725 | target = " enum"; | |
7726 | eos_ok = 0; | |
7727 | last_initializer = NULL; | |
7728 | set_enum_kind (); | |
7729 | gfc_free_enum_history (); | |
7730 | break; | |
7731 | ||
6de9cd9a DN |
7732 | default: |
7733 | gfc_error ("Unexpected END statement at %C"); | |
7734 | goto cleanup; | |
7735 | } | |
7736 | ||
3a43b5b3 | 7737 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7738 | if (gfc_match_eos () == MATCH_YES) |
7739 | { | |
272001a2 TB |
7740 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
7741 | { | |
524af0d6 | 7742 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 7743 | "instead of %s statement at %L", |
4668d6f9 PT |
7744 | abreviated_modproc_decl ? "END PROCEDURE" |
7745 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
7746 | goto cleanup; |
7747 | } | |
7748 | else if (!eos_ok) | |
6de9cd9a | 7749 | { |
66e4ab31 | 7750 | /* We would have required END [something]. */ |
59ce85b5 TS |
7751 | gfc_error ("%s statement expected at %L", |
7752 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
7753 | goto cleanup; |
7754 | } | |
7755 | ||
7756 | return MATCH_YES; | |
7757 | } | |
7758 | ||
7759 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
7760 | if (gfc_match (target) != MATCH_YES) | |
7761 | { | |
4668d6f9 PT |
7762 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
7763 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
7764 | goto cleanup; |
7765 | } | |
874108a9 AV |
7766 | else |
7767 | got_matching_end = true; | |
6de9cd9a | 7768 | |
3a43b5b3 | 7769 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7770 | /* If we're at the end, make sure a block name wasn't required. */ |
7771 | if (gfc_match_eos () == MATCH_YES) | |
7772 | { | |
7773 | ||
690af379 | 7774 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 7775 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 7776 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
7777 | return MATCH_YES; |
7778 | ||
9abe5e56 | 7779 | if (!block_name) |
6de9cd9a DN |
7780 | return MATCH_YES; |
7781 | ||
c4100eae | 7782 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 7783 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
7784 | |
7785 | return MATCH_ERROR; | |
7786 | } | |
7787 | ||
7788 | /* END INTERFACE has a special handler for its several possible endings. */ | |
7789 | if (*st == ST_END_INTERFACE) | |
7790 | return gfc_match_end_interface (); | |
7791 | ||
66e4ab31 SK |
7792 | /* We haven't hit the end of statement, so what is left must be an |
7793 | end-name. */ | |
6de9cd9a DN |
7794 | m = gfc_match_space (); |
7795 | if (m == MATCH_YES) | |
7796 | m = gfc_match_name (name); | |
7797 | ||
7798 | if (m == MATCH_NO) | |
7799 | gfc_error ("Expected terminating name at %C"); | |
7800 | if (m != MATCH_YES) | |
7801 | goto cleanup; | |
7802 | ||
7803 | if (block_name == NULL) | |
7804 | goto syntax; | |
7805 | ||
3d5dc929 PT |
7806 | /* We have to pick out the declared submodule name from the composite |
7807 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
7808 | if (state == COMP_SUBMODULE) | |
7809 | block_name = strchr (block_name, '.') + 1; | |
7810 | ||
3070bab4 | 7811 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 7812 | { |
c4100eae | 7813 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
7814 | gfc_ascii_statement (*st)); |
7815 | goto cleanup; | |
7816 | } | |
3070bab4 JW |
7817 | /* Procedure pointer as function result. */ |
7818 | else if (strcmp (block_name, "ppr@") == 0 | |
7819 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
7820 | { | |
c4100eae | 7821 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
7822 | gfc_current_block ()->ns->proc_name->name, |
7823 | gfc_ascii_statement (*st)); | |
7824 | goto cleanup; | |
7825 | } | |
6de9cd9a DN |
7826 | |
7827 | if (gfc_match_eos () == MATCH_YES) | |
7828 | return MATCH_YES; | |
7829 | ||
7830 | syntax: | |
7831 | gfc_syntax_error (*st); | |
7832 | ||
7833 | cleanup: | |
63645982 | 7834 | gfc_current_locus = old_loc; |
0cab6b73 TK |
7835 | |
7836 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
7837 | Remove it from the parent namespace's sibling list. */ | |
7838 | ||
874108a9 | 7839 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
7840 | { |
7841 | parent_ns = gfc_current_ns->parent; | |
7842 | ||
7843 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
7844 | ||
7845 | prev_ns = NULL; | |
7846 | ns = *nsp; | |
7847 | while (ns) | |
7848 | { | |
7849 | if (ns == gfc_current_ns) | |
7850 | { | |
7851 | if (prev_ns == NULL) | |
7852 | *nsp = NULL; | |
7853 | else | |
7854 | prev_ns->sibling = ns->sibling; | |
7855 | } | |
7856 | prev_ns = ns; | |
7857 | ns = ns->sibling; | |
7858 | } | |
874108a9 | 7859 | |
0cab6b73 TK |
7860 | gfc_free_namespace (gfc_current_ns); |
7861 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
7862 | gfc_state_stack = gfc_state_stack->previous; |
7863 | state = gfc_current_state (); | |
0cab6b73 TK |
7864 | } |
7865 | ||
6de9cd9a DN |
7866 | return MATCH_ERROR; |
7867 | } | |
7868 | ||
7869 | ||
7870 | ||
7871 | /***************** Attribute declaration statements ****************/ | |
7872 | ||
7873 | /* Set the attribute of a single variable. */ | |
7874 | ||
7875 | static match | |
7876 | attr_decl1 (void) | |
7877 | { | |
7878 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7879 | gfc_array_spec *as; | |
97440db5 ML |
7880 | |
7881 | /* Workaround -Wmaybe-uninitialized false positive during | |
7882 | profiledbootstrap by initializing them. */ | |
7883 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
7884 | locus var_locus; |
7885 | match m; | |
7886 | ||
7887 | as = NULL; | |
7888 | ||
7889 | m = gfc_match_name (name); | |
7890 | if (m != MATCH_YES) | |
7891 | goto cleanup; | |
7892 | ||
08a6b8e0 | 7893 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
7894 | return MATCH_ERROR; |
7895 | ||
524af0d6 | 7896 | if (!check_function_name (name)) |
bb9de0c4 JW |
7897 | { |
7898 | m = MATCH_ERROR; | |
7899 | goto cleanup; | |
7900 | } | |
f5acf0f2 | 7901 | |
63645982 | 7902 | var_locus = gfc_current_locus; |
6de9cd9a DN |
7903 | |
7904 | /* Deal with possible array specification for certain attributes. */ | |
7905 | if (current_attr.dimension | |
be59db2d | 7906 | || current_attr.codimension |
6de9cd9a DN |
7907 | || current_attr.allocatable |
7908 | || current_attr.pointer | |
7909 | || current_attr.target) | |
7910 | { | |
be59db2d TB |
7911 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
7912 | !current_attr.dimension | |
7913 | && !current_attr.pointer | |
7914 | && !current_attr.target); | |
6de9cd9a DN |
7915 | if (m == MATCH_ERROR) |
7916 | goto cleanup; | |
7917 | ||
7918 | if (current_attr.dimension && m == MATCH_NO) | |
7919 | { | |
636dff67 SK |
7920 | gfc_error ("Missing array specification at %L in DIMENSION " |
7921 | "statement", &var_locus); | |
6de9cd9a DN |
7922 | m = MATCH_ERROR; |
7923 | goto cleanup; | |
7924 | } | |
7925 | ||
1283ab12 TB |
7926 | if (current_attr.dimension && sym->value) |
7927 | { | |
7928 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 7929 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
7930 | m = MATCH_ERROR; |
7931 | goto cleanup; | |
7932 | } | |
7933 | ||
be59db2d TB |
7934 | if (current_attr.codimension && m == MATCH_NO) |
7935 | { | |
7936 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
7937 | "statement", &var_locus); | |
7938 | m = MATCH_ERROR; | |
7939 | goto cleanup; | |
7940 | } | |
7941 | ||
6de9cd9a DN |
7942 | if ((current_attr.allocatable || current_attr.pointer) |
7943 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
7944 | { | |
636dff67 | 7945 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
7946 | m = MATCH_ERROR; |
7947 | goto cleanup; | |
7948 | } | |
7949 | } | |
7950 | ||
2e23972e JW |
7951 | /* Update symbol table. DIMENSION attribute is set in |
7952 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 7953 | to the first component, or '_data' field. */ |
d40477b4 | 7954 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 7955 | { |
524af0d6 | 7956 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
7957 | { |
7958 | m = MATCH_ERROR; | |
7959 | goto cleanup; | |
7960 | } | |
2e23972e JW |
7961 | } |
7962 | else | |
7963 | { | |
be59db2d | 7964 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 7965 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
7966 | { |
7967 | m = MATCH_ERROR; | |
7968 | goto cleanup; | |
7969 | } | |
6de9cd9a | 7970 | } |
f5acf0f2 | 7971 | |
528622fd | 7972 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 7973 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
7974 | { |
7975 | m = MATCH_ERROR; | |
7976 | goto cleanup; | |
7977 | } | |
6de9cd9a | 7978 | |
524af0d6 | 7979 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
7980 | { |
7981 | m = MATCH_ERROR; | |
7982 | goto cleanup; | |
7983 | } | |
d51347f9 | 7984 | |
83d890b9 AL |
7985 | if (sym->attr.cray_pointee && sym->as != NULL) |
7986 | { | |
7987 | /* Fix the array spec. */ | |
f5acf0f2 | 7988 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
7989 | if (m == MATCH_ERROR) |
7990 | goto cleanup; | |
7991 | } | |
6de9cd9a | 7992 | |
524af0d6 | 7993 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
7994 | { |
7995 | m = MATCH_ERROR; | |
7996 | goto cleanup; | |
7997 | } | |
7998 | ||
6de9cd9a DN |
7999 | if ((current_attr.external || current_attr.intrinsic) |
8000 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8001 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8002 | { |
8003 | m = MATCH_ERROR; | |
8004 | goto cleanup; | |
8005 | } | |
8006 | ||
3070bab4 JW |
8007 | add_hidden_procptr_result (sym); |
8008 | ||
6de9cd9a DN |
8009 | return MATCH_YES; |
8010 | ||
8011 | cleanup: | |
8012 | gfc_free_array_spec (as); | |
8013 | return m; | |
8014 | } | |
8015 | ||
8016 | ||
8017 | /* Generic attribute declaration subroutine. Used for attributes that | |
8018 | just have a list of names. */ | |
8019 | ||
8020 | static match | |
8021 | attr_decl (void) | |
8022 | { | |
8023 | match m; | |
8024 | ||
8025 | /* Gobble the optional double colon, by simply ignoring the result | |
8026 | of gfc_match(). */ | |
8027 | gfc_match (" ::"); | |
8028 | ||
8029 | for (;;) | |
8030 | { | |
8031 | m = attr_decl1 (); | |
8032 | if (m != MATCH_YES) | |
8033 | break; | |
8034 | ||
8035 | if (gfc_match_eos () == MATCH_YES) | |
8036 | { | |
8037 | m = MATCH_YES; | |
8038 | break; | |
8039 | } | |
8040 | ||
8041 | if (gfc_match_char (',') != MATCH_YES) | |
8042 | { | |
8043 | gfc_error ("Unexpected character in variable list at %C"); | |
8044 | m = MATCH_ERROR; | |
8045 | break; | |
8046 | } | |
8047 | } | |
8048 | ||
8049 | return m; | |
8050 | } | |
8051 | ||
8052 | ||
83d890b9 AL |
8053 | /* This routine matches Cray Pointer declarations of the form: |
8054 | pointer ( <pointer>, <pointee> ) | |
8055 | or | |
d51347f9 TB |
8056 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8057 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8058 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8059 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8060 | the pointee. For the statement |
83d890b9 AL |
8061 | pointer (ipt, ar(10)) |
8062 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8063 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8064 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8065 | |
8066 | static match | |
8067 | cray_pointer_decl (void) | |
8068 | { | |
8069 | match m; | |
be59db2d | 8070 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8071 | gfc_symbol *cptr; /* Pointer symbol. */ |
8072 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8073 | locus var_locus; | |
8074 | bool done = false; | |
8075 | ||
8076 | while (!done) | |
8077 | { | |
8078 | if (gfc_match_char ('(') != MATCH_YES) | |
8079 | { | |
a4d9b221 | 8080 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8081 | return MATCH_ERROR; |
83d890b9 | 8082 | } |
d51347f9 | 8083 | |
83d890b9 AL |
8084 | /* Match pointer. */ |
8085 | var_locus = gfc_current_locus; | |
8086 | gfc_clear_attr (¤t_attr); | |
8087 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8088 | current_ts.type = BT_INTEGER; | |
8089 | current_ts.kind = gfc_index_integer_kind; | |
8090 | ||
d51347f9 | 8091 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8092 | if (m != MATCH_YES) |
8093 | { | |
8094 | gfc_error ("Expected variable name at %C"); | |
8095 | return m; | |
8096 | } | |
d51347f9 | 8097 | |
524af0d6 | 8098 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8099 | return MATCH_ERROR; |
8100 | ||
d51347f9 | 8101 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8102 | |
8103 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8104 | { | |
8105 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8106 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8107 | } |
8108 | else if (cptr->ts.type != BT_INTEGER) | |
8109 | { | |
e25a0da3 | 8110 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8111 | return MATCH_ERROR; |
8112 | } | |
8113 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8114 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8115 | " memory addresses require %d bytes", |
636dff67 | 8116 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8117 | |
8118 | if (gfc_match_char (',') != MATCH_YES) | |
8119 | { | |
8120 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8121 | return MATCH_ERROR; |
83d890b9 AL |
8122 | } |
8123 | ||
d51347f9 | 8124 | /* Match Pointee. */ |
83d890b9 AL |
8125 | var_locus = gfc_current_locus; |
8126 | gfc_clear_attr (¤t_attr); | |
8127 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8128 | current_ts.type = BT_UNKNOWN; | |
8129 | current_ts.kind = 0; | |
8130 | ||
8131 | m = gfc_match_symbol (&cpte, 0); | |
8132 | if (m != MATCH_YES) | |
8133 | { | |
8134 | gfc_error ("Expected variable name at %C"); | |
8135 | return m; | |
8136 | } | |
d51347f9 | 8137 | |
83d890b9 | 8138 | /* Check for an optional array spec. */ |
be59db2d | 8139 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8140 | if (m == MATCH_ERROR) |
8141 | { | |
8142 | gfc_free_array_spec (as); | |
8143 | return m; | |
8144 | } | |
8145 | else if (m == MATCH_NO) | |
8146 | { | |
8147 | gfc_free_array_spec (as); | |
8148 | as = NULL; | |
f5acf0f2 | 8149 | } |
83d890b9 | 8150 | |
524af0d6 | 8151 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8152 | return MATCH_ERROR; |
8153 | ||
8154 | gfc_set_sym_referenced (cpte); | |
8155 | ||
8156 | if (cpte->as == NULL) | |
8157 | { | |
524af0d6 | 8158 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
8159 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8160 | } | |
8161 | else if (as != NULL) | |
8162 | { | |
e25a0da3 | 8163 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8164 | gfc_free_array_spec (as); |
8165 | return MATCH_ERROR; | |
8166 | } | |
f5acf0f2 | 8167 | |
83d890b9 | 8168 | as = NULL; |
f5acf0f2 | 8169 | |
83d890b9 AL |
8170 | if (cpte->as != NULL) |
8171 | { | |
8172 | /* Fix array spec. */ | |
8173 | m = gfc_mod_pointee_as (cpte->as); | |
8174 | if (m == MATCH_ERROR) | |
8175 | return m; | |
f5acf0f2 PT |
8176 | } |
8177 | ||
83d890b9 | 8178 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8179 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8180 | |
8181 | if (gfc_match_char (')') != MATCH_YES) | |
8182 | { | |
8183 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8184 | return MATCH_ERROR; |
83d890b9 AL |
8185 | } |
8186 | m = gfc_match_char (','); | |
8187 | if (m != MATCH_YES) | |
8188 | done = true; /* Stop searching for more declarations. */ | |
8189 | ||
8190 | } | |
f5acf0f2 | 8191 | |
83d890b9 AL |
8192 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8193 | || gfc_match_eos () != MATCH_YES) | |
8194 | { | |
a4d9b221 | 8195 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8196 | return MATCH_ERROR; |
8197 | } | |
8198 | return MATCH_YES; | |
8199 | } | |
8200 | ||
8201 | ||
6de9cd9a DN |
8202 | match |
8203 | gfc_match_external (void) | |
8204 | { | |
8205 | ||
8206 | gfc_clear_attr (¤t_attr); | |
1902704e | 8207 | current_attr.external = 1; |
6de9cd9a DN |
8208 | |
8209 | return attr_decl (); | |
8210 | } | |
8211 | ||
8212 | ||
6de9cd9a DN |
8213 | match |
8214 | gfc_match_intent (void) | |
8215 | { | |
8216 | sym_intent intent; | |
8217 | ||
9abe5e56 DK |
8218 | /* This is not allowed within a BLOCK construct! */ |
8219 | if (gfc_current_state () == COMP_BLOCK) | |
8220 | { | |
8221 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8222 | return MATCH_ERROR; | |
8223 | } | |
8224 | ||
6de9cd9a DN |
8225 | intent = match_intent_spec (); |
8226 | if (intent == INTENT_UNKNOWN) | |
8227 | return MATCH_ERROR; | |
8228 | ||
8229 | gfc_clear_attr (¤t_attr); | |
1902704e | 8230 | current_attr.intent = intent; |
6de9cd9a DN |
8231 | |
8232 | return attr_decl (); | |
8233 | } | |
8234 | ||
8235 | ||
8236 | match | |
8237 | gfc_match_intrinsic (void) | |
8238 | { | |
8239 | ||
8240 | gfc_clear_attr (¤t_attr); | |
1902704e | 8241 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8242 | |
8243 | return attr_decl (); | |
8244 | } | |
8245 | ||
8246 | ||
8247 | match | |
8248 | gfc_match_optional (void) | |
8249 | { | |
9abe5e56 DK |
8250 | /* This is not allowed within a BLOCK construct! */ |
8251 | if (gfc_current_state () == COMP_BLOCK) | |
8252 | { | |
8253 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8254 | return MATCH_ERROR; | |
8255 | } | |
6de9cd9a DN |
8256 | |
8257 | gfc_clear_attr (¤t_attr); | |
1902704e | 8258 | current_attr.optional = 1; |
6de9cd9a DN |
8259 | |
8260 | return attr_decl (); | |
8261 | } | |
8262 | ||
8263 | ||
8264 | match | |
8265 | gfc_match_pointer (void) | |
8266 | { | |
83d890b9 | 8267 | gfc_gobble_whitespace (); |
8fc541d3 | 8268 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8269 | { |
c61819ff | 8270 | if (!flag_cray_pointer) |
83d890b9 | 8271 | { |
636dff67 SK |
8272 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8273 | "flag"); | |
83d890b9 AL |
8274 | return MATCH_ERROR; |
8275 | } | |
8276 | return cray_pointer_decl (); | |
8277 | } | |
8278 | else | |
8279 | { | |
8280 | gfc_clear_attr (¤t_attr); | |
1902704e | 8281 | current_attr.pointer = 1; |
f5acf0f2 | 8282 | |
83d890b9 AL |
8283 | return attr_decl (); |
8284 | } | |
6de9cd9a DN |
8285 | } |
8286 | ||
8287 | ||
8288 | match | |
8289 | gfc_match_allocatable (void) | |
8290 | { | |
6de9cd9a | 8291 | gfc_clear_attr (¤t_attr); |
1902704e | 8292 | current_attr.allocatable = 1; |
6de9cd9a DN |
8293 | |
8294 | return attr_decl (); | |
8295 | } | |
8296 | ||
8297 | ||
be59db2d TB |
8298 | match |
8299 | gfc_match_codimension (void) | |
8300 | { | |
8301 | gfc_clear_attr (¤t_attr); | |
8302 | current_attr.codimension = 1; | |
8303 | ||
8304 | return attr_decl (); | |
8305 | } | |
8306 | ||
8307 | ||
fe4e525c TB |
8308 | match |
8309 | gfc_match_contiguous (void) | |
8310 | { | |
524af0d6 | 8311 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8312 | return MATCH_ERROR; |
8313 | ||
8314 | gfc_clear_attr (¤t_attr); | |
8315 | current_attr.contiguous = 1; | |
8316 | ||
8317 | return attr_decl (); | |
8318 | } | |
8319 | ||
8320 | ||
6de9cd9a DN |
8321 | match |
8322 | gfc_match_dimension (void) | |
8323 | { | |
6de9cd9a | 8324 | gfc_clear_attr (¤t_attr); |
1902704e | 8325 | current_attr.dimension = 1; |
6de9cd9a DN |
8326 | |
8327 | return attr_decl (); | |
8328 | } | |
8329 | ||
8330 | ||
8331 | match | |
8332 | gfc_match_target (void) | |
8333 | { | |
6de9cd9a | 8334 | gfc_clear_attr (¤t_attr); |
1902704e | 8335 | current_attr.target = 1; |
6de9cd9a DN |
8336 | |
8337 | return attr_decl (); | |
8338 | } | |
8339 | ||
8340 | ||
8341 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8342 | statement. */ | |
8343 | ||
8344 | static match | |
8345 | access_attr_decl (gfc_statement st) | |
8346 | { | |
8347 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8348 | interface_type type; | |
8349 | gfc_user_op *uop; | |
c3f34952 | 8350 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8351 | gfc_intrinsic_op op; |
6de9cd9a DN |
8352 | match m; |
8353 | ||
8354 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8355 | goto done; | |
8356 | ||
8357 | for (;;) | |
8358 | { | |
a1ee985f | 8359 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8360 | if (m == MATCH_NO) |
8361 | goto syntax; | |
8362 | if (m == MATCH_ERROR) | |
8363 | return MATCH_ERROR; | |
8364 | ||
8365 | switch (type) | |
8366 | { | |
8367 | case INTERFACE_NAMELESS: | |
9e1d712c | 8368 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8369 | goto syntax; |
8370 | ||
8371 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8372 | case INTERFACE_DTIO: |
dc42a736 | 8373 | |
6de9cd9a DN |
8374 | if (gfc_get_symbol (name, NULL, &sym)) |
8375 | goto done; | |
8376 | ||
41036686 PT |
8377 | if (type == INTERFACE_DTIO |
8378 | && gfc_current_ns->proc_name | |
8379 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8380 | && sym->attr.flavor == FL_UNKNOWN) | |
8381 | sym->attr.flavor = FL_PROCEDURE; | |
8382 | ||
70112e2a PT |
8383 | if (!gfc_add_access (&sym->attr, |
8384 | (st == ST_PUBLIC) | |
8385 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8386 | sym->name, NULL)) |
6de9cd9a DN |
8387 | return MATCH_ERROR; |
8388 | ||
c3f34952 | 8389 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
8390 | && !gfc_add_access (&dt_sym->attr, |
8391 | (st == ST_PUBLIC) | |
8392 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8393 | sym->name, NULL)) |
c3f34952 TB |
8394 | return MATCH_ERROR; |
8395 | ||
6de9cd9a DN |
8396 | break; |
8397 | ||
8398 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8399 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8400 | { |
fb03a37e TK |
8401 | gfc_intrinsic_op other_op; |
8402 | ||
a1ee985f | 8403 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 8404 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
8405 | |
8406 | /* Handle the case if there is another op with the same | |
8407 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8408 | other_op = gfc_equivalent_op (op); | |
8409 | ||
8410 | if (other_op != INTRINSIC_NONE) | |
8411 | gfc_current_ns->operator_access[other_op] = | |
8412 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8413 | ||
6de9cd9a DN |
8414 | } |
8415 | else | |
8416 | { | |
8417 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8418 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8419 | goto done; |
8420 | } | |
8421 | ||
8422 | break; | |
8423 | ||
8424 | case INTERFACE_USER_OP: | |
8425 | uop = gfc_get_uop (name); | |
8426 | ||
8427 | if (uop->access == ACCESS_UNKNOWN) | |
8428 | { | |
636dff67 SK |
8429 | uop->access = (st == ST_PUBLIC) |
8430 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
8431 | } |
8432 | else | |
8433 | { | |
636dff67 SK |
8434 | gfc_error ("Access specification of the .%s. operator at %C " |
8435 | "has already been specified", sym->name); | |
6de9cd9a DN |
8436 | goto done; |
8437 | } | |
8438 | ||
8439 | break; | |
8440 | } | |
8441 | ||
8442 | if (gfc_match_char (',') == MATCH_NO) | |
8443 | break; | |
8444 | } | |
8445 | ||
8446 | if (gfc_match_eos () != MATCH_YES) | |
8447 | goto syntax; | |
8448 | return MATCH_YES; | |
8449 | ||
8450 | syntax: | |
8451 | gfc_syntax_error (st); | |
8452 | ||
8453 | done: | |
8454 | return MATCH_ERROR; | |
8455 | } | |
8456 | ||
8457 | ||
ee7e677f TB |
8458 | match |
8459 | gfc_match_protected (void) | |
8460 | { | |
8461 | gfc_symbol *sym; | |
8462 | match m; | |
8463 | ||
73641c88 SK |
8464 | if (!gfc_current_ns->proc_name |
8465 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8466 | { |
8467 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8468 | "part of a module"); | |
8469 | return MATCH_ERROR; | |
8470 | ||
8471 | } | |
8472 | ||
524af0d6 | 8473 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8474 | return MATCH_ERROR; |
8475 | ||
8476 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8477 | { | |
8478 | return MATCH_ERROR; | |
8479 | } | |
8480 | ||
8481 | if (gfc_match_eos () == MATCH_YES) | |
8482 | goto syntax; | |
8483 | ||
8484 | for(;;) | |
8485 | { | |
8486 | m = gfc_match_symbol (&sym, 0); | |
8487 | switch (m) | |
8488 | { | |
8489 | case MATCH_YES: | |
524af0d6 | 8490 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8491 | return MATCH_ERROR; |
8492 | goto next_item; | |
8493 | ||
8494 | case MATCH_NO: | |
8495 | break; | |
8496 | ||
8497 | case MATCH_ERROR: | |
8498 | return MATCH_ERROR; | |
8499 | } | |
8500 | ||
8501 | next_item: | |
8502 | if (gfc_match_eos () == MATCH_YES) | |
8503 | break; | |
8504 | if (gfc_match_char (',') != MATCH_YES) | |
8505 | goto syntax; | |
8506 | } | |
8507 | ||
8508 | return MATCH_YES; | |
8509 | ||
8510 | syntax: | |
8511 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8512 | return MATCH_ERROR; | |
8513 | } | |
8514 | ||
8515 | ||
86bf520d | 8516 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8517 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8518 | type declaration or a module. */ |
8519 | ||
8520 | match | |
636dff67 | 8521 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
8522 | { |
8523 | ||
8524 | if (gfc_match ("private") != MATCH_YES) | |
8525 | return MATCH_NO; | |
8526 | ||
d51347f9 | 8527 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
8528 | && !(gfc_current_state () == COMP_DERIVED |
8529 | && gfc_state_stack->previous | |
8530 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8531 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8532 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8533 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
8534 | { |
8535 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8536 | "specification part of a module"); | |
8537 | return MATCH_ERROR; | |
8538 | } | |
8539 | ||
6de9cd9a DN |
8540 | if (gfc_current_state () == COMP_DERIVED) |
8541 | { | |
8542 | if (gfc_match_eos () == MATCH_YES) | |
8543 | { | |
8544 | *st = ST_PRIVATE; | |
8545 | return MATCH_YES; | |
8546 | } | |
8547 | ||
8548 | gfc_syntax_error (ST_PRIVATE); | |
8549 | return MATCH_ERROR; | |
8550 | } | |
8551 | ||
8552 | if (gfc_match_eos () == MATCH_YES) | |
8553 | { | |
8554 | *st = ST_PRIVATE; | |
8555 | return MATCH_YES; | |
8556 | } | |
8557 | ||
8558 | *st = ST_ATTR_DECL; | |
8559 | return access_attr_decl (ST_PRIVATE); | |
8560 | } | |
8561 | ||
8562 | ||
8563 | match | |
636dff67 | 8564 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
8565 | { |
8566 | ||
8567 | if (gfc_match ("public") != MATCH_YES) | |
8568 | return MATCH_NO; | |
8569 | ||
d51347f9 TB |
8570 | if (gfc_current_state () != COMP_MODULE) |
8571 | { | |
8572 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8573 | "specification part of a module"); | |
8574 | return MATCH_ERROR; | |
8575 | } | |
8576 | ||
6de9cd9a DN |
8577 | if (gfc_match_eos () == MATCH_YES) |
8578 | { | |
8579 | *st = ST_PUBLIC; | |
8580 | return MATCH_YES; | |
8581 | } | |
8582 | ||
8583 | *st = ST_ATTR_DECL; | |
8584 | return access_attr_decl (ST_PUBLIC); | |
8585 | } | |
8586 | ||
8587 | ||
8588 | /* Workhorse for gfc_match_parameter. */ | |
8589 | ||
8590 | static match | |
8591 | do_parm (void) | |
8592 | { | |
8593 | gfc_symbol *sym; | |
8594 | gfc_expr *init; | |
8595 | match m; | |
524af0d6 | 8596 | bool t; |
6de9cd9a DN |
8597 | |
8598 | m = gfc_match_symbol (&sym, 0); | |
8599 | if (m == MATCH_NO) | |
8600 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8601 | ||
8602 | if (m != MATCH_YES) | |
8603 | return m; | |
8604 | ||
8605 | if (gfc_match_char ('=') == MATCH_NO) | |
8606 | { | |
8607 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8608 | return MATCH_ERROR; | |
8609 | } | |
8610 | ||
8611 | m = gfc_match_init_expr (&init); | |
8612 | if (m == MATCH_NO) | |
8613 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8614 | if (m != MATCH_YES) | |
8615 | return m; | |
8616 | ||
8617 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 8618 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
8619 | { |
8620 | m = MATCH_ERROR; | |
8621 | goto cleanup; | |
8622 | } | |
8623 | ||
524af0d6 JB |
8624 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8625 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
8626 | { |
8627 | m = MATCH_ERROR; | |
8628 | goto cleanup; | |
8629 | } | |
8630 | ||
1283ab12 TB |
8631 | if (sym->value) |
8632 | { | |
8633 | gfc_error ("Initializing already initialized variable at %C"); | |
8634 | m = MATCH_ERROR; | |
8635 | goto cleanup; | |
8636 | } | |
8637 | ||
7919373d | 8638 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 8639 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
8640 | |
8641 | cleanup: | |
8642 | gfc_free_expr (init); | |
8643 | return m; | |
8644 | } | |
8645 | ||
8646 | ||
8647 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8648 | ||
8649 | match | |
8650 | gfc_match_parameter (void) | |
8651 | { | |
35ea947f | 8652 | const char *term = " )%t"; |
6de9cd9a DN |
8653 | match m; |
8654 | ||
8655 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
8656 | { |
8657 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8658 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8659 | return MATCH_NO; | |
8660 | term = " %t"; | |
8661 | } | |
6de9cd9a DN |
8662 | |
8663 | for (;;) | |
8664 | { | |
8665 | m = do_parm (); | |
8666 | if (m != MATCH_YES) | |
8667 | break; | |
8668 | ||
35ea947f | 8669 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
8670 | break; |
8671 | ||
8672 | if (gfc_match_char (',') != MATCH_YES) | |
8673 | { | |
8674 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8675 | m = MATCH_ERROR; | |
8676 | break; | |
8677 | } | |
8678 | } | |
8679 | ||
8680 | return m; | |
8681 | } | |
8682 | ||
8683 | ||
34d567d1 FR |
8684 | match |
8685 | gfc_match_automatic (void) | |
8686 | { | |
8687 | gfc_symbol *sym; | |
8688 | match m; | |
8689 | bool seen_symbol = false; | |
8690 | ||
8691 | if (!flag_dec_static) | |
8692 | { | |
cf004230 FR |
8693 | gfc_error ("%s at %C is a DEC extension, enable with " |
8694 | "%<-fdec-static%>", | |
8695 | "AUTOMATIC" | |
8696 | ); | |
34d567d1 FR |
8697 | return MATCH_ERROR; |
8698 | } | |
8699 | ||
8700 | gfc_match (" ::"); | |
8701 | ||
8702 | for (;;) | |
8703 | { | |
8704 | m = gfc_match_symbol (&sym, 0); | |
8705 | switch (m) | |
8706 | { | |
8707 | case MATCH_NO: | |
8708 | break; | |
8709 | ||
8710 | case MATCH_ERROR: | |
8711 | return MATCH_ERROR; | |
8712 | ||
8713 | case MATCH_YES: | |
8714 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
8715 | return MATCH_ERROR; | |
8716 | seen_symbol = true; | |
8717 | break; | |
8718 | } | |
8719 | ||
8720 | if (gfc_match_eos () == MATCH_YES) | |
8721 | break; | |
8722 | if (gfc_match_char (',') != MATCH_YES) | |
8723 | goto syntax; | |
8724 | } | |
8725 | ||
8726 | if (!seen_symbol) | |
8727 | { | |
8728 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
8729 | return MATCH_ERROR; | |
8730 | } | |
8731 | ||
8732 | return MATCH_YES; | |
8733 | ||
8734 | syntax: | |
8735 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
8736 | return MATCH_ERROR; | |
8737 | } | |
8738 | ||
8739 | ||
8740 | match | |
8741 | gfc_match_static (void) | |
8742 | { | |
8743 | gfc_symbol *sym; | |
8744 | match m; | |
8745 | bool seen_symbol = false; | |
8746 | ||
8747 | if (!flag_dec_static) | |
8748 | { | |
cf004230 FR |
8749 | gfc_error ("%s at %C is a DEC extension, enable with " |
8750 | "%<-fdec-static%>", | |
8751 | "STATIC"); | |
34d567d1 FR |
8752 | return MATCH_ERROR; |
8753 | } | |
8754 | ||
8755 | gfc_match (" ::"); | |
8756 | ||
8757 | for (;;) | |
8758 | { | |
8759 | m = gfc_match_symbol (&sym, 0); | |
8760 | switch (m) | |
8761 | { | |
8762 | case MATCH_NO: | |
8763 | break; | |
8764 | ||
8765 | case MATCH_ERROR: | |
8766 | return MATCH_ERROR; | |
8767 | ||
8768 | case MATCH_YES: | |
8769 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
8770 | &gfc_current_locus)) | |
8771 | return MATCH_ERROR; | |
8772 | seen_symbol = true; | |
8773 | break; | |
8774 | } | |
8775 | ||
8776 | if (gfc_match_eos () == MATCH_YES) | |
8777 | break; | |
8778 | if (gfc_match_char (',') != MATCH_YES) | |
8779 | goto syntax; | |
8780 | } | |
8781 | ||
8782 | if (!seen_symbol) | |
8783 | { | |
8784 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
8785 | return MATCH_ERROR; | |
8786 | } | |
8787 | ||
8788 | return MATCH_YES; | |
8789 | ||
8790 | syntax: | |
8791 | gfc_error ("Syntax error in STATIC statement at %C"); | |
8792 | return MATCH_ERROR; | |
8793 | } | |
8794 | ||
8795 | ||
6de9cd9a DN |
8796 | /* Save statements have a special syntax. */ |
8797 | ||
8798 | match | |
8799 | gfc_match_save (void) | |
8800 | { | |
9056bd70 TS |
8801 | char n[GFC_MAX_SYMBOL_LEN+1]; |
8802 | gfc_common_head *c; | |
6de9cd9a DN |
8803 | gfc_symbol *sym; |
8804 | match m; | |
8805 | ||
8806 | if (gfc_match_eos () == MATCH_YES) | |
8807 | { | |
8808 | if (gfc_current_ns->seen_save) | |
8809 | { | |
524af0d6 JB |
8810 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
8811 | "follows previous SAVE statement")) | |
09e87839 | 8812 | return MATCH_ERROR; |
6de9cd9a DN |
8813 | } |
8814 | ||
8815 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
8816 | return MATCH_YES; | |
8817 | } | |
8818 | ||
8819 | if (gfc_current_ns->save_all) | |
8820 | { | |
524af0d6 JB |
8821 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
8822 | "blanket SAVE statement")) | |
09e87839 | 8823 | return MATCH_ERROR; |
6de9cd9a DN |
8824 | } |
8825 | ||
8826 | gfc_match (" ::"); | |
8827 | ||
8828 | for (;;) | |
8829 | { | |
8830 | m = gfc_match_symbol (&sym, 0); | |
8831 | switch (m) | |
8832 | { | |
8833 | case MATCH_YES: | |
70112e2a | 8834 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 8835 | &gfc_current_locus)) |
6de9cd9a DN |
8836 | return MATCH_ERROR; |
8837 | goto next_item; | |
8838 | ||
8839 | case MATCH_NO: | |
8840 | break; | |
8841 | ||
8842 | case MATCH_ERROR: | |
8843 | return MATCH_ERROR; | |
8844 | } | |
8845 | ||
9056bd70 | 8846 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
8847 | if (m == MATCH_ERROR) |
8848 | return MATCH_ERROR; | |
8849 | if (m == MATCH_NO) | |
8850 | goto syntax; | |
8851 | ||
53814b8f | 8852 | c = gfc_get_common (n, 0); |
9056bd70 TS |
8853 | c->saved = 1; |
8854 | ||
6de9cd9a DN |
8855 | gfc_current_ns->seen_save = 1; |
8856 | ||
8857 | next_item: | |
8858 | if (gfc_match_eos () == MATCH_YES) | |
8859 | break; | |
8860 | if (gfc_match_char (',') != MATCH_YES) | |
8861 | goto syntax; | |
8862 | } | |
8863 | ||
8864 | return MATCH_YES; | |
8865 | ||
8866 | syntax: | |
8867 | gfc_error ("Syntax error in SAVE statement at %C"); | |
8868 | return MATCH_ERROR; | |
8869 | } | |
8870 | ||
8871 | ||
06469efd PT |
8872 | match |
8873 | gfc_match_value (void) | |
8874 | { | |
8875 | gfc_symbol *sym; | |
8876 | match m; | |
8877 | ||
9abe5e56 DK |
8878 | /* This is not allowed within a BLOCK construct! */ |
8879 | if (gfc_current_state () == COMP_BLOCK) | |
8880 | { | |
8881 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
8882 | return MATCH_ERROR; | |
8883 | } | |
8884 | ||
524af0d6 | 8885 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
8886 | return MATCH_ERROR; |
8887 | ||
8888 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8889 | { | |
8890 | return MATCH_ERROR; | |
8891 | } | |
8892 | ||
8893 | if (gfc_match_eos () == MATCH_YES) | |
8894 | goto syntax; | |
8895 | ||
8896 | for(;;) | |
8897 | { | |
8898 | m = gfc_match_symbol (&sym, 0); | |
8899 | switch (m) | |
8900 | { | |
8901 | case MATCH_YES: | |
524af0d6 | 8902 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
8903 | return MATCH_ERROR; |
8904 | goto next_item; | |
8905 | ||
8906 | case MATCH_NO: | |
8907 | break; | |
8908 | ||
8909 | case MATCH_ERROR: | |
8910 | return MATCH_ERROR; | |
8911 | } | |
8912 | ||
8913 | next_item: | |
8914 | if (gfc_match_eos () == MATCH_YES) | |
8915 | break; | |
8916 | if (gfc_match_char (',') != MATCH_YES) | |
8917 | goto syntax; | |
8918 | } | |
8919 | ||
8920 | return MATCH_YES; | |
8921 | ||
8922 | syntax: | |
8923 | gfc_error ("Syntax error in VALUE statement at %C"); | |
8924 | return MATCH_ERROR; | |
8925 | } | |
8926 | ||
66e4ab31 | 8927 | |
775e6c3a TB |
8928 | match |
8929 | gfc_match_volatile (void) | |
8930 | { | |
8931 | gfc_symbol *sym; | |
8932 | match m; | |
8933 | ||
524af0d6 | 8934 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
8935 | return MATCH_ERROR; |
8936 | ||
8937 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8938 | { | |
8939 | return MATCH_ERROR; | |
8940 | } | |
8941 | ||
8942 | if (gfc_match_eos () == MATCH_YES) | |
8943 | goto syntax; | |
8944 | ||
8945 | for(;;) | |
8946 | { | |
f5acf0f2 | 8947 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 8948 | symbols locally. Except for coarrays. */ |
9bce3c1c | 8949 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
8950 | switch (m) |
8951 | { | |
8952 | case MATCH_YES: | |
be59db2d TB |
8953 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
8954 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
8955 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
8956 | { | |
c4100eae | 8957 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
8958 | "%C, which is use-/host-associated", sym->name); |
8959 | return MATCH_ERROR; | |
8960 | } | |
524af0d6 | 8961 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
8962 | return MATCH_ERROR; |
8963 | goto next_item; | |
8964 | ||
8965 | case MATCH_NO: | |
8966 | break; | |
8967 | ||
8968 | case MATCH_ERROR: | |
8969 | return MATCH_ERROR; | |
8970 | } | |
8971 | ||
8972 | next_item: | |
8973 | if (gfc_match_eos () == MATCH_YES) | |
8974 | break; | |
8975 | if (gfc_match_char (',') != MATCH_YES) | |
8976 | goto syntax; | |
8977 | } | |
8978 | ||
8979 | return MATCH_YES; | |
8980 | ||
8981 | syntax: | |
8982 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
8983 | return MATCH_ERROR; | |
8984 | } | |
8985 | ||
8986 | ||
1eee5628 TB |
8987 | match |
8988 | gfc_match_asynchronous (void) | |
8989 | { | |
8990 | gfc_symbol *sym; | |
8991 | match m; | |
8992 | ||
524af0d6 | 8993 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
8994 | return MATCH_ERROR; |
8995 | ||
8996 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8997 | { | |
8998 | return MATCH_ERROR; | |
8999 | } | |
9000 | ||
9001 | if (gfc_match_eos () == MATCH_YES) | |
9002 | goto syntax; | |
9003 | ||
9004 | for(;;) | |
9005 | { | |
f5acf0f2 | 9006 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9007 | symbols locally. */ |
9008 | m = gfc_match_symbol (&sym, 1); | |
9009 | switch (m) | |
9010 | { | |
9011 | case MATCH_YES: | |
524af0d6 | 9012 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9013 | return MATCH_ERROR; |
9014 | goto next_item; | |
9015 | ||
9016 | case MATCH_NO: | |
9017 | break; | |
9018 | ||
9019 | case MATCH_ERROR: | |
9020 | return MATCH_ERROR; | |
9021 | } | |
9022 | ||
9023 | next_item: | |
9024 | if (gfc_match_eos () == MATCH_YES) | |
9025 | break; | |
9026 | if (gfc_match_char (',') != MATCH_YES) | |
9027 | goto syntax; | |
9028 | } | |
9029 | ||
9030 | return MATCH_YES; | |
9031 | ||
9032 | syntax: | |
9033 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9034 | return MATCH_ERROR; | |
9035 | } | |
9036 | ||
9037 | ||
4668d6f9 PT |
9038 | /* Match a module procedure statement in a submodule. */ |
9039 | ||
9040 | match | |
9041 | gfc_match_submod_proc (void) | |
9042 | { | |
9043 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9044 | gfc_symbol *sym, *fsym; | |
9045 | match m; | |
9046 | gfc_formal_arglist *formal, *head, *tail; | |
9047 | ||
9048 | if (gfc_current_state () != COMP_CONTAINS | |
9049 | || !(gfc_state_stack->previous | |
70112e2a PT |
9050 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9051 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9052 | return MATCH_NO; |
9053 | ||
9054 | m = gfc_match (" module% procedure% %n", name); | |
9055 | if (m != MATCH_YES) | |
9056 | return m; | |
9057 | ||
9058 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9059 | "at %C")) | |
9060 | return MATCH_ERROR; | |
9061 | ||
9062 | if (get_proc_name (name, &sym, false)) | |
9063 | return MATCH_ERROR; | |
9064 | ||
9065 | /* Make sure that the result field is appropriately filled, even though | |
9066 | the result symbol will be replaced later on. */ | |
c064374d | 9067 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9068 | { |
c064374d PT |
9069 | if (sym->tlink->result |
9070 | && sym->tlink->result != sym->tlink) | |
9071 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9072 | else |
9073 | sym->result = sym; | |
9074 | } | |
9075 | ||
9076 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9077 | the symbol existed before. */ | |
9078 | sym->declared_at = gfc_current_locus; | |
9079 | ||
9080 | if (!sym->attr.module_procedure) | |
9081 | return MATCH_ERROR; | |
9082 | ||
9083 | /* Signal match_end to expect "end procedure". */ | |
9084 | sym->abr_modproc_decl = 1; | |
9085 | ||
9086 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9087 | sym->attr.if_source = IFSRC_DECL; | |
9088 | ||
9089 | gfc_new_block = sym; | |
9090 | ||
9091 | /* Make a new formal arglist with the symbols in the procedure | |
9092 | namespace. */ | |
9093 | head = tail = NULL; | |
9094 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9095 | { | |
9096 | if (formal == sym->formal) | |
9097 | head = tail = gfc_get_formal_arglist (); | |
9098 | else | |
9099 | { | |
9100 | tail->next = gfc_get_formal_arglist (); | |
9101 | tail = tail->next; | |
9102 | } | |
9103 | ||
9104 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9105 | goto cleanup; | |
9106 | ||
9107 | tail->sym = fsym; | |
9108 | gfc_set_sym_referenced (fsym); | |
9109 | } | |
9110 | ||
9111 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9112 | interface declaration is cleared. This allows us to add the | |
9113 | explicit interface as is done for other type of procedure. */ | |
9114 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9115 | &gfc_current_locus)) | |
9116 | return MATCH_ERROR; | |
9117 | ||
9118 | if (gfc_match_eos () != MATCH_YES) | |
9119 | { | |
9120 | gfc_syntax_error (ST_MODULE_PROC); | |
9121 | return MATCH_ERROR; | |
9122 | } | |
9123 | ||
9124 | return MATCH_YES; | |
9125 | ||
9126 | cleanup: | |
9127 | gfc_free_formal_arglist (head); | |
9128 | return MATCH_ERROR; | |
9129 | } | |
9130 | ||
9131 | ||
6de9cd9a DN |
9132 | /* Match a module procedure statement. Note that we have to modify |
9133 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9134 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9135 | |
9136 | match | |
9137 | gfc_match_modproc (void) | |
9138 | { | |
9139 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9140 | gfc_symbol *sym; | |
9141 | match m; | |
162b5a21 | 9142 | locus old_locus; |
060fca4a | 9143 | gfc_namespace *module_ns; |
2b77e908 | 9144 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9145 | |
9146 | if (gfc_state_stack->state != COMP_INTERFACE | |
9147 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9148 | || current_interface.type == INTERFACE_NAMELESS |
9149 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9150 | { |
636dff67 SK |
9151 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9152 | "interface"); | |
6de9cd9a DN |
9153 | return MATCH_ERROR; |
9154 | } | |
9155 | ||
060fca4a PT |
9156 | module_ns = gfc_current_ns->parent; |
9157 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9158 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9159 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9160 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9161 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9162 | break; |
9163 | ||
9164 | if (module_ns == NULL) | |
9165 | return MATCH_ERROR; | |
9166 | ||
2b77e908 FXC |
9167 | /* Store the current state of the interface. We will need it if we |
9168 | end up with a syntax error and need to recover. */ | |
9169 | old_interface_head = gfc_current_interface_head (); | |
9170 | ||
162b5a21 SK |
9171 | /* Check if the F2008 optional double colon appears. */ |
9172 | gfc_gobble_whitespace (); | |
9173 | old_locus = gfc_current_locus; | |
9174 | if (gfc_match ("::") == MATCH_YES) | |
9175 | { | |
524af0d6 JB |
9176 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9177 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9178 | return MATCH_ERROR; |
9179 | } | |
9180 | else | |
9181 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9182 | |
6de9cd9a DN |
9183 | for (;;) |
9184 | { | |
2b77e908 | 9185 | bool last = false; |
162b5a21 | 9186 | old_locus = gfc_current_locus; |
2b77e908 | 9187 | |
6de9cd9a DN |
9188 | m = gfc_match_name (name); |
9189 | if (m == MATCH_NO) | |
9190 | goto syntax; | |
9191 | if (m != MATCH_YES) | |
9192 | return MATCH_ERROR; | |
9193 | ||
2b77e908 FXC |
9194 | /* Check for syntax error before starting to add symbols to the |
9195 | current namespace. */ | |
9196 | if (gfc_match_eos () == MATCH_YES) | |
9197 | last = true; | |
162b5a21 | 9198 | |
2b77e908 FXC |
9199 | if (!last && gfc_match_char (',') != MATCH_YES) |
9200 | goto syntax; | |
9201 | ||
9202 | /* Now we're sure the syntax is valid, we process this item | |
9203 | further. */ | |
060fca4a | 9204 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9205 | return MATCH_ERROR; |
9206 | ||
43dfd40c SK |
9207 | if (sym->attr.intrinsic) |
9208 | { | |
9209 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9210 | "PROCEDURE", &old_locus); | |
9211 | return MATCH_ERROR; | |
9212 | } | |
9213 | ||
6de9cd9a | 9214 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9215 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9216 | return MATCH_ERROR; |
9217 | ||
524af0d6 | 9218 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9219 | return MATCH_ERROR; |
9220 | ||
71f77fd7 | 9221 | sym->attr.mod_proc = 1; |
43dfd40c | 9222 | sym->declared_at = old_locus; |
71f77fd7 | 9223 | |
2b77e908 | 9224 | if (last) |
6de9cd9a | 9225 | break; |
6de9cd9a DN |
9226 | } |
9227 | ||
9228 | return MATCH_YES; | |
9229 | ||
9230 | syntax: | |
2b77e908 FXC |
9231 | /* Restore the previous state of the interface. */ |
9232 | interface = gfc_current_interface_head (); | |
9233 | gfc_set_current_interface_head (old_interface_head); | |
9234 | ||
9235 | /* Free the new interfaces. */ | |
9236 | while (interface != old_interface_head) | |
9237 | { | |
9238 | gfc_interface *i = interface->next; | |
cede9502 | 9239 | free (interface); |
2b77e908 FXC |
9240 | interface = i; |
9241 | } | |
9242 | ||
9243 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9244 | gfc_syntax_error (ST_MODULE_PROC); |
9245 | return MATCH_ERROR; | |
9246 | } | |
9247 | ||
9248 | ||
7d1f1e61 | 9249 | /* Check a derived type that is being extended. */ |
42e3d759 | 9250 | |
7d1f1e61 PT |
9251 | static gfc_symbol* |
9252 | check_extended_derived_type (char *name) | |
9253 | { | |
9254 | gfc_symbol *extended; | |
9255 | ||
9256 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9257 | { | |
9258 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9259 | return NULL; | |
9260 | } | |
9261 | ||
42e3d759 JW |
9262 | extended = gfc_find_dt_in_generic (extended); |
9263 | ||
9264 | /* F08:C428. */ | |
7d1f1e61 PT |
9265 | if (!extended) |
9266 | { | |
c4100eae | 9267 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9268 | return NULL; |
9269 | } | |
9270 | ||
9271 | if (extended->attr.flavor != FL_DERIVED) | |
9272 | { | |
c4100eae | 9273 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9274 | "derived type", name); |
9275 | return NULL; | |
9276 | } | |
9277 | ||
9278 | if (extended->attr.is_bind_c) | |
9279 | { | |
c4100eae | 9280 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9281 | "is BIND(C)", extended->name); |
9282 | return NULL; | |
9283 | } | |
9284 | ||
9285 | if (extended->attr.sequence) | |
9286 | { | |
c4100eae | 9287 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9288 | "is a SEQUENCE type", extended->name); |
9289 | return NULL; | |
9290 | } | |
9291 | ||
9292 | return extended; | |
9293 | } | |
9294 | ||
9295 | ||
a8b3b0b6 CR |
9296 | /* Match the optional attribute specifiers for a type declaration. |
9297 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9298 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9299 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9300 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9301 | |
9302 | match | |
7d1f1e61 | 9303 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9304 | { |
a8b3b0b6 | 9305 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9306 | if (gfc_match (" , private") == MATCH_YES) |
9307 | { | |
d51347f9 | 9308 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9309 | { |
d51347f9 TB |
9310 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9311 | "specification part of a module"); | |
6de9cd9a DN |
9312 | return MATCH_ERROR; |
9313 | } | |
9314 | ||
524af0d6 | 9315 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9316 | return MATCH_ERROR; |
6de9cd9a | 9317 | } |
a8b3b0b6 | 9318 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9319 | { |
d51347f9 | 9320 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9321 | { |
d51347f9 TB |
9322 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9323 | "specification part of a module"); | |
6de9cd9a DN |
9324 | return MATCH_ERROR; |
9325 | } | |
9326 | ||
524af0d6 | 9327 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9328 | return MATCH_ERROR; |
6de9cd9a | 9329 | } |
52f49934 | 9330 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9331 | { |
9332 | /* If the type is defined to be bind(c) it then needs to make | |
9333 | sure that all fields are interoperable. This will | |
9334 | need to be a semantic check on the finished derived type. | |
9335 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9336 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9337 | return MATCH_ERROR; |
9338 | ||
9339 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9340 | } | |
52f49934 DK |
9341 | else if (gfc_match (" , abstract") == MATCH_YES) |
9342 | { | |
524af0d6 | 9343 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9344 | return MATCH_ERROR; |
9345 | ||
524af0d6 | 9346 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9347 | return MATCH_ERROR; |
9348 | } | |
524af0d6 | 9349 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9350 | { |
524af0d6 | 9351 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9352 | return MATCH_ERROR; |
9353 | } | |
a8b3b0b6 CR |
9354 | else |
9355 | return MATCH_NO; | |
9356 | ||
9357 | /* If we get here, something matched. */ | |
9358 | return MATCH_YES; | |
9359 | } | |
9360 | ||
9361 | ||
f6288c24 FR |
9362 | /* Common function for type declaration blocks similar to derived types, such |
9363 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9364 | does NOT have a generic symbol matching the name given by the user. | |
9365 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9366 | for the creation of an independent symbol. | |
6442a6f4 | 9367 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9368 | type to be created, and the flavor to add to the resulting symbol. */ |
9369 | ||
9370 | static bool | |
9371 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9372 | gfc_symbol **result) | |
9373 | { | |
9374 | gfc_symbol *sym; | |
9375 | locus where; | |
9376 | ||
9377 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9378 | ||
9379 | if (decl) | |
9380 | where = *decl; | |
9381 | else | |
9382 | where = gfc_current_locus; | |
9383 | ||
9384 | if (gfc_get_symbol (name, NULL, &sym)) | |
9385 | return false; | |
9386 | ||
9387 | if (!sym) | |
9388 | { | |
9389 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9390 | return false; | |
9391 | } | |
9392 | ||
9393 | if (sym->components != NULL || sym->attr.zero_comp) | |
9394 | { | |
2f029c08 | 9395 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9396 | sym->name, &sym->declared_at); |
9397 | return false; | |
9398 | } | |
9399 | ||
9400 | sym->declared_at = where; | |
9401 | ||
9402 | if (sym->attr.flavor != fl | |
9403 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9404 | return false; | |
9405 | ||
9406 | if (!sym->hash_value) | |
9407 | /* Set the hash for the compound name for this type. */ | |
9408 | sym->hash_value = gfc_hash_value (sym); | |
9409 | ||
9410 | /* Normally the type is expected to have been completely parsed by the time | |
9411 | a field declaration with this type is seen. For unions, maps, and nested | |
9412 | structure declarations, we need to indicate that it is okay that we | |
9413 | haven't seen any components yet. This will be updated after the structure | |
9414 | is fully parsed. */ | |
9415 | sym->attr.zero_comp = 0; | |
9416 | ||
9417 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9418 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9419 | ||
9420 | if (result) *result = sym; | |
9421 | ||
9422 | return true; | |
9423 | } | |
9424 | ||
9425 | ||
9426 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9427 | behaves identical to STRUCTURE blocks. */ | |
9428 | ||
9429 | match | |
9430 | gfc_match_map (void) | |
9431 | { | |
05b8fcb4 FR |
9432 | /* Counter used to give unique internal names to map structures. */ |
9433 | static unsigned int gfc_map_id = 0; | |
9434 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9435 | gfc_symbol *sym; | |
9436 | locus old_loc; | |
f6288c24 | 9437 | |
05b8fcb4 | 9438 | old_loc = gfc_current_locus; |
f6288c24 | 9439 | |
05b8fcb4 FR |
9440 | if (gfc_match_eos () != MATCH_YES) |
9441 | { | |
9442 | gfc_error ("Junk after MAP statement at %C"); | |
9443 | gfc_current_locus = old_loc; | |
9444 | return MATCH_ERROR; | |
9445 | } | |
f6288c24 | 9446 | |
05b8fcb4 FR |
9447 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9448 | which are invalid Fortran identifiers. */ | |
9449 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9450 | |
05b8fcb4 FR |
9451 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9452 | return MATCH_ERROR; | |
f6288c24 | 9453 | |
05b8fcb4 | 9454 | gfc_new_block = sym; |
f6288c24 | 9455 | |
05b8fcb4 | 9456 | return MATCH_YES; |
f6288c24 FR |
9457 | } |
9458 | ||
9459 | ||
9460 | /* Match the opening of a UNION block. */ | |
9461 | ||
9462 | match | |
9463 | gfc_match_union (void) | |
9464 | { | |
05b8fcb4 FR |
9465 | /* Counter used to give unique internal names to union types. */ |
9466 | static unsigned int gfc_union_id = 0; | |
9467 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9468 | gfc_symbol *sym; | |
9469 | locus old_loc; | |
f6288c24 | 9470 | |
05b8fcb4 | 9471 | old_loc = gfc_current_locus; |
f6288c24 | 9472 | |
05b8fcb4 FR |
9473 | if (gfc_match_eos () != MATCH_YES) |
9474 | { | |
9475 | gfc_error ("Junk after UNION statement at %C"); | |
9476 | gfc_current_locus = old_loc; | |
9477 | return MATCH_ERROR; | |
9478 | } | |
f6288c24 | 9479 | |
05b8fcb4 FR |
9480 | /* Unions are anonymous so we make up unique names for the symbol table |
9481 | which are invalid Fortran identifiers. */ | |
9482 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9483 | |
05b8fcb4 FR |
9484 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9485 | return MATCH_ERROR; | |
f6288c24 | 9486 | |
05b8fcb4 | 9487 | gfc_new_block = sym; |
f6288c24 | 9488 | |
05b8fcb4 | 9489 | return MATCH_YES; |
f6288c24 FR |
9490 | } |
9491 | ||
9492 | ||
9493 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9494 | matching the beginning of a derived type declaration with a few | |
9495 | twists. The resulting type symbol has no access control or other | |
9496 | interesting attributes. */ | |
9497 | ||
9498 | match | |
9499 | gfc_match_structure_decl (void) | |
9500 | { | |
05b8fcb4 FR |
9501 | /* Counter used to give unique internal names to anonymous structures. */ |
9502 | static unsigned int gfc_structure_id = 0; | |
9503 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9504 | gfc_symbol *sym; | |
9505 | match m; | |
9506 | locus where; | |
f6288c24 | 9507 | |
05b8fcb4 FR |
9508 | if (!flag_dec_structure) |
9509 | { | |
cf004230 FR |
9510 | gfc_error ("%s at %C is a DEC extension, enable with " |
9511 | "%<-fdec-structure%>", | |
9512 | "STRUCTURE"); | |
05b8fcb4 FR |
9513 | return MATCH_ERROR; |
9514 | } | |
f6288c24 | 9515 | |
05b8fcb4 | 9516 | name[0] = '\0'; |
f6288c24 | 9517 | |
05b8fcb4 FR |
9518 | m = gfc_match (" /%n/", name); |
9519 | if (m != MATCH_YES) | |
9520 | { | |
9521 | /* Non-nested structure declarations require a structure name. */ | |
9522 | if (!gfc_comp_struct (gfc_current_state ())) | |
9523 | { | |
9524 | gfc_error ("Structure name expected in non-nested structure " | |
9525 | "declaration at %C"); | |
9526 | return MATCH_ERROR; | |
9527 | } | |
9528 | /* This is an anonymous structure; make up a unique name for it | |
9529 | (upper-case letters never make it to symbol names from the source). | |
9530 | The important thing is initializing the type variable | |
9531 | and setting gfc_new_symbol, which is immediately used by | |
9532 | parse_structure () and variable_decl () to add components of | |
9533 | this type. */ | |
9534 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9535 | } | |
f6288c24 | 9536 | |
05b8fcb4 FR |
9537 | where = gfc_current_locus; |
9538 | /* No field list allowed after non-nested structure declaration. */ | |
9539 | if (!gfc_comp_struct (gfc_current_state ()) | |
9540 | && gfc_match_eos () != MATCH_YES) | |
9541 | { | |
9542 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9543 | return MATCH_ERROR; | |
9544 | } | |
f6288c24 | 9545 | |
05b8fcb4 FR |
9546 | /* Make sure the name is not the name of an intrinsic type. */ |
9547 | if (gfc_is_intrinsic_typename (name)) | |
9548 | { | |
2f029c08 | 9549 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
9550 | " intrinsic type", name); |
9551 | return MATCH_ERROR; | |
9552 | } | |
f6288c24 | 9553 | |
05b8fcb4 FR |
9554 | /* Store the actual type symbol for the structure with an upper-case first |
9555 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 9556 | |
51f03c6b | 9557 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 9558 | return MATCH_ERROR; |
f6288c24 | 9559 | |
05b8fcb4 FR |
9560 | gfc_new_block = sym; |
9561 | return MATCH_YES; | |
f6288c24 FR |
9562 | } |
9563 | ||
90051c26 FR |
9564 | |
9565 | /* This function does some work to determine which matcher should be used to | |
9566 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE | |
9567 | * as an alias for PRINT from derived type declarations, TYPE IS statements, | |
9568 | * and derived type data declarations. */ | |
9569 | ||
9570 | match | |
9571 | gfc_match_type (gfc_statement *st) | |
9572 | { | |
9573 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9574 | match m; | |
9575 | locus old_loc; | |
9576 | ||
9577 | /* Requires -fdec. */ | |
9578 | if (!flag_dec) | |
9579 | return MATCH_NO; | |
9580 | ||
9581 | m = gfc_match ("type"); | |
9582 | if (m != MATCH_YES) | |
9583 | return m; | |
9584 | /* If we already have an error in the buffer, it is probably from failing to | |
9585 | * match a derived type data declaration. Let it happen. */ | |
9586 | else if (gfc_error_flag_test ()) | |
9587 | return MATCH_NO; | |
9588 | ||
9589 | old_loc = gfc_current_locus; | |
9590 | *st = ST_NONE; | |
9591 | ||
9592 | /* If we see an attribute list before anything else it's definitely a derived | |
9593 | * type declaration. */ | |
9594 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
9595 | { | |
9596 | gfc_current_locus = old_loc; | |
9597 | *st = ST_DERIVED_DECL; | |
9598 | return gfc_match_derived_decl (); | |
9599 | } | |
9600 | ||
9601 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9602 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9603 | m = gfc_match_name (name); | |
9604 | if (m != MATCH_YES) | |
9605 | { | |
9606 | /* Let print match if it can, otherwise throw an error from | |
9607 | * gfc_match_derived_decl. */ | |
9608 | gfc_current_locus = old_loc; | |
9609 | if (gfc_match_print () == MATCH_YES) | |
9610 | { | |
9611 | *st = ST_WRITE; | |
9612 | return MATCH_YES; | |
9613 | } | |
9614 | gfc_current_locus = old_loc; | |
9615 | *st = ST_DERIVED_DECL; | |
9616 | return gfc_match_derived_decl (); | |
9617 | } | |
9618 | ||
9619 | /* A derived type declaration requires an EOS. Without it, assume print. */ | |
9620 | m = gfc_match_eos (); | |
9621 | if (m == MATCH_NO) | |
9622 | { | |
9623 | /* Check manually for TYPE IS (... - this is invalid print syntax. */ | |
9624 | if (strncmp ("is", name, 3) == 0 | |
9625 | && gfc_match (" (", name) == MATCH_YES) | |
9626 | { | |
9627 | gfc_current_locus = old_loc; | |
9628 | gcc_assert (gfc_match (" is") == MATCH_YES); | |
9629 | *st = ST_TYPE_IS; | |
9630 | return gfc_match_type_is (); | |
9631 | } | |
9632 | gfc_current_locus = old_loc; | |
9633 | *st = ST_WRITE; | |
9634 | return gfc_match_print (); | |
9635 | } | |
9636 | else | |
9637 | { | |
9638 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9639 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9640 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9641 | * symbol which can be printed. */ | |
9642 | gfc_current_locus = old_loc; | |
9643 | m = gfc_match_derived_decl (); | |
9644 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9645 | { | |
9646 | *st = ST_DERIVED_DECL; | |
9647 | return m; | |
9648 | } | |
9649 | gfc_current_locus = old_loc; | |
9650 | *st = ST_WRITE; | |
9651 | return gfc_match_print (); | |
9652 | } | |
9653 | ||
9654 | return MATCH_NO; | |
9655 | } | |
9656 | ||
9657 | ||
a8b3b0b6 CR |
9658 | /* Match the beginning of a derived type declaration. If a type name |
9659 | was the result of a function, then it is possible to have a symbol | |
9660 | already to be known as a derived type yet have no components. */ | |
9661 | ||
9662 | match | |
9663 | gfc_match_derived_decl (void) | |
9664 | { | |
9665 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 9666 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 9667 | symbol_attribute attr; |
c3f34952 | 9668 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 9669 | gfc_symbol *extended; |
a8b3b0b6 CR |
9670 | match m; |
9671 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 9672 | bool seen_attr = false; |
c3f34952 | 9673 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
9674 | bool parameterized_type = false; |
9675 | bool seen_colons = false; | |
a8b3b0b6 | 9676 | |
f6288c24 | 9677 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
9678 | return MATCH_NO; |
9679 | ||
7d1f1e61 PT |
9680 | name[0] = '\0'; |
9681 | parent[0] = '\0'; | |
a8b3b0b6 | 9682 | gfc_clear_attr (&attr); |
7d1f1e61 | 9683 | extended = NULL; |
a8b3b0b6 CR |
9684 | |
9685 | do | |
9686 | { | |
7d1f1e61 | 9687 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
9688 | if (is_type_attr_spec == MATCH_ERROR) |
9689 | return MATCH_ERROR; | |
e7303e85 FXC |
9690 | if (is_type_attr_spec == MATCH_YES) |
9691 | seen_attr = true; | |
a8b3b0b6 | 9692 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 9693 | |
63a3341a PT |
9694 | /* Deal with derived type extensions. The extension attribute has |
9695 | been added to 'attr' but now the parent type must be found and | |
9696 | checked. */ | |
7d1f1e61 PT |
9697 | if (parent[0]) |
9698 | extended = check_extended_derived_type (parent); | |
9699 | ||
9700 | if (parent[0] && !extended) | |
9701 | return MATCH_ERROR; | |
9702 | ||
5bab4c96 PT |
9703 | m = gfc_match (" ::"); |
9704 | if (m == MATCH_YES) | |
9705 | { | |
9706 | seen_colons = true; | |
9707 | } | |
9708 | else if (seen_attr) | |
6de9cd9a DN |
9709 | { |
9710 | gfc_error ("Expected :: in TYPE definition at %C"); | |
9711 | return MATCH_ERROR; | |
9712 | } | |
9713 | ||
5bab4c96 | 9714 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
9715 | if (m != MATCH_YES) |
9716 | return m; | |
9717 | ||
5bab4c96 PT |
9718 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
9719 | derived type named 'is'. | |
9720 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
9721 | and checking if this is a(n intrinsic) typename. his picks up | |
9722 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
9723 | if (gfc_peek_ascii_char () == '(') | |
9724 | { | |
9725 | if (gfc_current_state () == COMP_SELECT_TYPE | |
9726 | || (!seen_colons && !strcmp (name, "is"))) | |
9727 | return MATCH_NO; | |
9728 | parameterized_type = true; | |
9729 | } | |
9730 | ||
9731 | m = gfc_match_eos (); | |
9732 | if (m != MATCH_YES && !parameterized_type) | |
9733 | return m; | |
9734 | ||
e9c06563 TB |
9735 | /* Make sure the name is not the name of an intrinsic type. */ |
9736 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 9737 | { |
c4100eae | 9738 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 9739 | "type", name); |
6de9cd9a DN |
9740 | return MATCH_ERROR; |
9741 | } | |
9742 | ||
c3f34952 | 9743 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
9744 | return MATCH_ERROR; |
9745 | ||
c3f34952 | 9746 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 9747 | { |
c4100eae | 9748 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
9749 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
9750 | return MATCH_ERROR; | |
9751 | } | |
9752 | ||
9753 | if (!gensym->attr.generic | |
524af0d6 | 9754 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
9755 | return MATCH_ERROR; |
9756 | ||
9757 | if (!gensym->attr.function | |
524af0d6 | 9758 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
9759 | return MATCH_ERROR; |
9760 | ||
9761 | sym = gfc_find_dt_in_generic (gensym); | |
9762 | ||
9763 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
9764 | { | |
c4100eae | 9765 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 9766 | "defined", sym->name); |
6de9cd9a DN |
9767 | return MATCH_ERROR; |
9768 | } | |
9769 | ||
c3f34952 TB |
9770 | if (!sym) |
9771 | { | |
9772 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 9773 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 9774 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
9775 | head = gensym->generic; |
9776 | intr = gfc_get_interface (); | |
9777 | intr->sym = sym; | |
9778 | intr->where = gfc_current_locus; | |
9779 | intr->sym->declared_at = gfc_current_locus; | |
9780 | intr->next = head; | |
9781 | gensym->generic = intr; | |
9782 | gensym->attr.if_source = IFSRC_DECL; | |
9783 | } | |
9784 | ||
6de9cd9a DN |
9785 | /* The symbol may already have the derived attribute without the |
9786 | components. The ways this can happen is via a function | |
9787 | definition, an INTRINSIC statement or a subtype in another | |
9788 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 9789 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 9790 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 9791 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
9792 | return MATCH_ERROR; |
9793 | ||
6de9cd9a | 9794 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 9795 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 9796 | return MATCH_ERROR; |
c3f34952 TB |
9797 | else if (sym->attr.access == ACCESS_UNKNOWN |
9798 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 9799 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 9800 | sym->name, NULL)) |
c3f34952 TB |
9801 | return MATCH_ERROR; |
9802 | ||
9803 | if (sym->attr.access != ACCESS_UNKNOWN | |
9804 | && gensym->attr.access == ACCESS_UNKNOWN) | |
9805 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 9806 | |
a8b3b0b6 CR |
9807 | /* See if the derived type was labeled as bind(c). */ |
9808 | if (attr.is_bind_c != 0) | |
9809 | sym->attr.is_bind_c = attr.is_bind_c; | |
9810 | ||
34523524 DK |
9811 | /* Construct the f2k_derived namespace if it is not yet there. */ |
9812 | if (!sym->f2k_derived) | |
9813 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 9814 | |
5bab4c96 PT |
9815 | if (parameterized_type) |
9816 | { | |
9817 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
9818 | if (m != MATCH_YES) | |
9819 | return m; | |
9820 | m = gfc_match_eos (); | |
9821 | if (m != MATCH_YES) | |
9822 | return m; | |
9823 | sym->attr.pdt_template = 1; | |
9824 | } | |
9825 | ||
7d1f1e61 PT |
9826 | if (extended && !sym->components) |
9827 | { | |
9828 | gfc_component *p; | |
5bab4c96 | 9829 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
9830 | |
9831 | /* Add the extended derived type as the first component. */ | |
9832 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
9833 | extended->refs++; |
9834 | gfc_set_sym_referenced (extended); | |
9835 | ||
9836 | p->ts.type = BT_DERIVED; | |
bc21d315 | 9837 | p->ts.u.derived = extended; |
7d1f1e61 | 9838 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 9839 | |
7c1dab0d JW |
9840 | /* Set extension level. */ |
9841 | if (extended->attr.extension == 255) | |
9842 | { | |
9843 | /* Since the extension field is 8 bit wide, we can only have | |
9844 | up to 255 extension levels. */ | |
c4100eae | 9845 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
9846 | extended->name, &extended->declared_at); |
9847 | return MATCH_ERROR; | |
9848 | } | |
9849 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
9850 | |
9851 | /* Provide the links between the extended type and its extension. */ | |
9852 | if (!extended->f2k_derived) | |
9853 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
9854 | |
9855 | /* Copy the extended type-param-name-list from the extended type, | |
9856 | append those of the extension and add the whole lot to the | |
9857 | extension. */ | |
9858 | if (extended->attr.pdt_template) | |
9859 | { | |
9860 | g = h = NULL; | |
9861 | sym->attr.pdt_template = 1; | |
9862 | for (f = extended->formal; f; f = f->next) | |
9863 | { | |
9864 | if (f == extended->formal) | |
9865 | { | |
9866 | g = gfc_get_formal_arglist (); | |
9867 | h = g; | |
9868 | } | |
9869 | else | |
9870 | { | |
9871 | g->next = gfc_get_formal_arglist (); | |
9872 | g = g->next; | |
9873 | } | |
9874 | g->sym = f->sym; | |
9875 | } | |
9876 | g->next = sym->formal; | |
9877 | sym->formal = h; | |
9878 | } | |
7d1f1e61 PT |
9879 | } |
9880 | ||
7c1dab0d JW |
9881 | if (!sym->hash_value) |
9882 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 9883 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 9884 | |
52f49934 DK |
9885 | /* Take over the ABSTRACT attribute. */ |
9886 | sym->attr.abstract = attr.abstract; | |
9887 | ||
6de9cd9a DN |
9888 | gfc_new_block = sym; |
9889 | ||
9890 | return MATCH_YES; | |
9891 | } | |
83d890b9 AL |
9892 | |
9893 | ||
f5acf0f2 | 9894 | /* Cray Pointees can be declared as: |
b3aefde2 | 9895 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 9896 | |
32e8bb8e | 9897 | match |
83d890b9 AL |
9898 | gfc_mod_pointee_as (gfc_array_spec *as) |
9899 | { | |
9900 | as->cray_pointee = true; /* This will be useful to know later. */ | |
9901 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 9902 | as->cp_was_assumed = true; |
83d890b9 AL |
9903 | else if (as->type == AS_ASSUMED_SHAPE) |
9904 | { | |
9905 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
9906 | return MATCH_ERROR; | |
9907 | } | |
9908 | return MATCH_YES; | |
9909 | } | |
25d8f0a2 TS |
9910 | |
9911 | ||
f5acf0f2 PT |
9912 | /* Match the enum definition statement, here we are trying to match |
9913 | the first line of enum definition statement. | |
25d8f0a2 TS |
9914 | Returns MATCH_YES if match is found. */ |
9915 | ||
9916 | match | |
9917 | gfc_match_enum (void) | |
9918 | { | |
9919 | match m; | |
f5acf0f2 | 9920 | |
25d8f0a2 TS |
9921 | m = gfc_match_eos (); |
9922 | if (m != MATCH_YES) | |
9923 | return m; | |
9924 | ||
524af0d6 | 9925 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
9926 | return MATCH_ERROR; |
9927 | ||
9928 | return MATCH_YES; | |
9929 | } | |
9930 | ||
9931 | ||
31224396 SK |
9932 | /* Returns an initializer whose value is one higher than the value of the |
9933 | LAST_INITIALIZER argument. If the argument is NULL, the | |
9934 | initializers value will be set to zero. The initializer's kind | |
9935 | will be set to gfc_c_int_kind. | |
9936 | ||
9937 | If -fshort-enums is given, the appropriate kind will be selected | |
9938 | later after all enumerators have been parsed. A warning is issued | |
9939 | here if an initializer exceeds gfc_c_int_kind. */ | |
9940 | ||
9941 | static gfc_expr * | |
9942 | enum_initializer (gfc_expr *last_initializer, locus where) | |
9943 | { | |
9944 | gfc_expr *result; | |
b7e75771 | 9945 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
9946 | |
9947 | mpz_init (result->value.integer); | |
9948 | ||
9949 | if (last_initializer != NULL) | |
9950 | { | |
9951 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
9952 | result->where = last_initializer->where; | |
9953 | ||
9954 | if (gfc_check_integer_range (result->value.integer, | |
9955 | gfc_c_int_kind) != ARITH_OK) | |
9956 | { | |
9957 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
9958 | return NULL; | |
9959 | } | |
9960 | } | |
9961 | else | |
9962 | { | |
9963 | /* Control comes here, if it's the very first enumerator and no | |
9964 | initializer has been given. It will be initialized to zero. */ | |
9965 | mpz_set_si (result->value.integer, 0); | |
9966 | } | |
9967 | ||
9968 | return result; | |
9969 | } | |
9970 | ||
9971 | ||
6133c68a TS |
9972 | /* Match a variable name with an optional initializer. When this |
9973 | subroutine is called, a variable is expected to be parsed next. | |
9974 | Depending on what is happening at the moment, updates either the | |
9975 | symbol table or the current interface. */ | |
9976 | ||
9977 | static match | |
9978 | enumerator_decl (void) | |
9979 | { | |
9980 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9981 | gfc_expr *initializer; | |
9982 | gfc_array_spec *as = NULL; | |
9983 | gfc_symbol *sym; | |
9984 | locus var_locus; | |
9985 | match m; | |
524af0d6 | 9986 | bool t; |
6133c68a TS |
9987 | locus old_locus; |
9988 | ||
9989 | initializer = NULL; | |
9990 | old_locus = gfc_current_locus; | |
9991 | ||
9992 | /* When we get here, we've just matched a list of attributes and | |
9993 | maybe a type and a double colon. The next thing we expect to see | |
9994 | is the name of the symbol. */ | |
9995 | m = gfc_match_name (name); | |
9996 | if (m != MATCH_YES) | |
9997 | goto cleanup; | |
9998 | ||
9999 | var_locus = gfc_current_locus; | |
10000 | ||
10001 | /* OK, we've successfully matched the declaration. Now put the | |
10002 | symbol in the current namespace. If we fail to create the symbol, | |
10003 | bail out. */ | |
524af0d6 | 10004 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10005 | { |
10006 | m = MATCH_ERROR; | |
10007 | goto cleanup; | |
10008 | } | |
10009 | ||
10010 | /* The double colon must be present in order to have initializers. | |
10011 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10012 | if (colon_seen) | |
10013 | { | |
10014 | if (gfc_match_char ('=') == MATCH_YES) | |
10015 | { | |
10016 | m = gfc_match_init_expr (&initializer); | |
10017 | if (m == MATCH_NO) | |
10018 | { | |
10019 | gfc_error ("Expected an initialization expression at %C"); | |
10020 | m = MATCH_ERROR; | |
10021 | } | |
10022 | ||
10023 | if (m != MATCH_YES) | |
10024 | goto cleanup; | |
10025 | } | |
10026 | } | |
10027 | ||
10028 | /* If we do not have an initializer, the initialization value of the | |
10029 | previous enumerator (stored in last_initializer) is incremented | |
10030 | by 1 and is used to initialize the current enumerator. */ | |
10031 | if (initializer == NULL) | |
31224396 | 10032 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10033 | |
6133c68a TS |
10034 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10035 | { | |
01e64c3d JJ |
10036 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10037 | &var_locus); | |
d51347f9 | 10038 | m = MATCH_ERROR; |
6133c68a TS |
10039 | goto cleanup; |
10040 | } | |
10041 | ||
10042 | /* Store this current initializer, for the next enumerator variable | |
10043 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10044 | use last_initializer below. */ | |
10045 | last_initializer = initializer; | |
10046 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10047 | ||
10048 | /* Maintain enumerator history. */ | |
10049 | gfc_find_symbol (name, NULL, 0, &sym); | |
10050 | create_enum_history (sym, last_initializer); | |
10051 | ||
524af0d6 | 10052 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10053 | |
10054 | cleanup: | |
10055 | /* Free stuff up and return. */ | |
10056 | gfc_free_expr (initializer); | |
10057 | ||
10058 | return m; | |
10059 | } | |
10060 | ||
10061 | ||
66e4ab31 | 10062 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10063 | |
10064 | match | |
10065 | gfc_match_enumerator_def (void) | |
10066 | { | |
10067 | match m; | |
524af0d6 | 10068 | bool t; |
d51347f9 | 10069 | |
25d8f0a2 | 10070 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10071 | |
25d8f0a2 TS |
10072 | m = gfc_match (" enumerator"); |
10073 | if (m != MATCH_YES) | |
10074 | return m; | |
6133c68a TS |
10075 | |
10076 | m = gfc_match (" :: "); | |
10077 | if (m == MATCH_ERROR) | |
10078 | return m; | |
10079 | ||
10080 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10081 | |
25d8f0a2 TS |
10082 | if (gfc_current_state () != COMP_ENUM) |
10083 | { | |
10084 | gfc_error ("ENUM definition statement expected before %C"); | |
10085 | gfc_free_enum_history (); | |
10086 | return MATCH_ERROR; | |
10087 | } | |
10088 | ||
10089 | (¤t_ts)->type = BT_INTEGER; | |
10090 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10091 | |
6133c68a TS |
10092 | gfc_clear_attr (¤t_attr); |
10093 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10094 | if (!t) |
25d8f0a2 | 10095 | { |
6133c68a | 10096 | m = MATCH_ERROR; |
25d8f0a2 TS |
10097 | goto cleanup; |
10098 | } | |
10099 | ||
25d8f0a2 TS |
10100 | for (;;) |
10101 | { | |
6133c68a | 10102 | m = enumerator_decl (); |
25d8f0a2 | 10103 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10104 | { |
10105 | gfc_free_enum_history (); | |
10106 | goto cleanup; | |
10107 | } | |
25d8f0a2 TS |
10108 | if (m == MATCH_NO) |
10109 | break; | |
10110 | ||
10111 | if (gfc_match_eos () == MATCH_YES) | |
10112 | goto cleanup; | |
10113 | if (gfc_match_char (',') != MATCH_YES) | |
10114 | break; | |
10115 | } | |
10116 | ||
10117 | if (gfc_current_state () == COMP_ENUM) | |
10118 | { | |
10119 | gfc_free_enum_history (); | |
10120 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10121 | m = MATCH_ERROR; | |
10122 | } | |
10123 | ||
10124 | cleanup: | |
10125 | gfc_free_array_spec (current_as); | |
10126 | current_as = NULL; | |
10127 | return m; | |
10128 | ||
10129 | } | |
10130 | ||
f6fad28e | 10131 | |
30b608eb DK |
10132 | /* Match binding attributes. */ |
10133 | ||
10134 | static match | |
713485cc | 10135 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10136 | { |
10137 | bool found_passing = false; | |
713485cc | 10138 | bool seen_ptr = false; |
90661f26 | 10139 | match m = MATCH_YES; |
30b608eb | 10140 | |
eea58adb | 10141 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10142 | this case the defaults are in there. */ |
10143 | ba->access = ACCESS_UNKNOWN; | |
10144 | ba->pass_arg = NULL; | |
10145 | ba->pass_arg_num = 0; | |
10146 | ba->nopass = 0; | |
10147 | ba->non_overridable = 0; | |
b0e5fa94 | 10148 | ba->deferred = 0; |
90661f26 | 10149 | ba->ppc = ppc; |
30b608eb DK |
10150 | |
10151 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10152 | m = gfc_match_char (','); |
10153 | if (m == MATCH_NO) | |
10154 | goto done; | |
30b608eb DK |
10155 | |
10156 | do | |
10157 | { | |
e157f736 DK |
10158 | /* Access specifier. */ |
10159 | ||
10160 | m = gfc_match (" public"); | |
30b608eb DK |
10161 | if (m == MATCH_ERROR) |
10162 | goto error; | |
10163 | if (m == MATCH_YES) | |
10164 | { | |
e157f736 | 10165 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10166 | { |
e157f736 | 10167 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10168 | goto error; |
10169 | } | |
10170 | ||
e157f736 | 10171 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10172 | continue; |
10173 | } | |
10174 | ||
e157f736 | 10175 | m = gfc_match (" private"); |
30b608eb DK |
10176 | if (m == MATCH_ERROR) |
10177 | goto error; | |
10178 | if (m == MATCH_YES) | |
10179 | { | |
e157f736 | 10180 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10181 | { |
e157f736 | 10182 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10183 | goto error; |
10184 | } | |
10185 | ||
e157f736 | 10186 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10187 | continue; |
10188 | } | |
10189 | ||
e157f736 DK |
10190 | /* If inside GENERIC, the following is not allowed. */ |
10191 | if (!generic) | |
30b608eb | 10192 | { |
30b608eb | 10193 | |
e157f736 DK |
10194 | /* NOPASS flag. */ |
10195 | m = gfc_match (" nopass"); | |
10196 | if (m == MATCH_ERROR) | |
10197 | goto error; | |
10198 | if (m == MATCH_YES) | |
30b608eb | 10199 | { |
e157f736 DK |
10200 | if (found_passing) |
10201 | { | |
10202 | gfc_error ("Binding attributes already specify passing," | |
10203 | " illegal NOPASS at %C"); | |
10204 | goto error; | |
10205 | } | |
10206 | ||
10207 | found_passing = true; | |
10208 | ba->nopass = 1; | |
10209 | continue; | |
30b608eb DK |
10210 | } |
10211 | ||
e157f736 DK |
10212 | /* PASS possibly including argument. */ |
10213 | m = gfc_match (" pass"); | |
10214 | if (m == MATCH_ERROR) | |
10215 | goto error; | |
10216 | if (m == MATCH_YES) | |
30b608eb | 10217 | { |
e157f736 DK |
10218 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10219 | ||
10220 | if (found_passing) | |
10221 | { | |
10222 | gfc_error ("Binding attributes already specify passing," | |
10223 | " illegal PASS at %C"); | |
10224 | goto error; | |
10225 | } | |
10226 | ||
10227 | m = gfc_match (" ( %n )", arg); | |
10228 | if (m == MATCH_ERROR) | |
10229 | goto error; | |
10230 | if (m == MATCH_YES) | |
51f03c6b | 10231 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10232 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10233 | ||
10234 | found_passing = true; | |
10235 | ba->nopass = 0; | |
10236 | continue; | |
30b608eb DK |
10237 | } |
10238 | ||
713485cc JW |
10239 | if (ppc) |
10240 | { | |
10241 | /* POINTER flag. */ | |
10242 | m = gfc_match (" pointer"); | |
10243 | if (m == MATCH_ERROR) | |
10244 | goto error; | |
10245 | if (m == MATCH_YES) | |
10246 | { | |
10247 | if (seen_ptr) | |
10248 | { | |
10249 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10250 | goto error; | |
10251 | } | |
10252 | ||
10253 | seen_ptr = true; | |
713485cc JW |
10254 | continue; |
10255 | } | |
10256 | } | |
10257 | else | |
10258 | { | |
10259 | /* NON_OVERRIDABLE flag. */ | |
10260 | m = gfc_match (" non_overridable"); | |
10261 | if (m == MATCH_ERROR) | |
10262 | goto error; | |
10263 | if (m == MATCH_YES) | |
10264 | { | |
10265 | if (ba->non_overridable) | |
10266 | { | |
10267 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10268 | goto error; | |
10269 | } | |
10270 | ||
10271 | ba->non_overridable = 1; | |
10272 | continue; | |
10273 | } | |
10274 | ||
10275 | /* DEFERRED flag. */ | |
10276 | m = gfc_match (" deferred"); | |
10277 | if (m == MATCH_ERROR) | |
10278 | goto error; | |
10279 | if (m == MATCH_YES) | |
10280 | { | |
10281 | if (ba->deferred) | |
10282 | { | |
10283 | gfc_error ("Duplicate DEFERRED at %C"); | |
10284 | goto error; | |
10285 | } | |
10286 | ||
10287 | ba->deferred = 1; | |
10288 | continue; | |
10289 | } | |
10290 | } | |
10291 | ||
30b608eb DK |
10292 | } |
10293 | ||
10294 | /* Nothing matching found. */ | |
e157f736 DK |
10295 | if (generic) |
10296 | gfc_error ("Expected access-specifier at %C"); | |
10297 | else | |
10298 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10299 | goto error; |
10300 | } | |
10301 | while (gfc_match_char (',') == MATCH_YES); | |
10302 | ||
b0e5fa94 DK |
10303 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10304 | if (ba->non_overridable && ba->deferred) | |
10305 | { | |
10306 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10307 | goto error; | |
10308 | } | |
10309 | ||
90661f26 JW |
10310 | m = MATCH_YES; |
10311 | ||
10312 | done: | |
e157f736 DK |
10313 | if (ba->access == ACCESS_UNKNOWN) |
10314 | ba->access = gfc_typebound_default_access; | |
10315 | ||
713485cc JW |
10316 | if (ppc && !seen_ptr) |
10317 | { | |
10318 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10319 | " at %C"); | |
10320 | goto error; | |
10321 | } | |
10322 | ||
90661f26 | 10323 | return m; |
30b608eb DK |
10324 | |
10325 | error: | |
30b608eb DK |
10326 | return MATCH_ERROR; |
10327 | } | |
10328 | ||
10329 | ||
10330 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10331 | ||
10332 | static match | |
10333 | match_procedure_in_type (void) | |
10334 | { | |
10335 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10336 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10337 | char* target = NULL, *ifc = NULL; |
3e15518b | 10338 | gfc_typebound_proc tb; |
30b608eb DK |
10339 | bool seen_colons; |
10340 | bool seen_attrs; | |
10341 | match m; | |
10342 | gfc_symtree* stree; | |
10343 | gfc_namespace* ns; | |
10344 | gfc_symbol* block; | |
1be17993 | 10345 | int num; |
30b608eb DK |
10346 | |
10347 | /* Check current state. */ | |
10348 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10349 | block = gfc_state_stack->previous->sym; | |
10350 | gcc_assert (block); | |
10351 | ||
b0e5fa94 | 10352 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10353 | if (gfc_match (" (") == MATCH_YES) |
10354 | { | |
b0e5fa94 DK |
10355 | m = gfc_match_name (target_buf); |
10356 | if (m == MATCH_ERROR) | |
10357 | return m; | |
10358 | if (m != MATCH_YES) | |
10359 | { | |
a4d9b221 | 10360 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10361 | return MATCH_ERROR; |
10362 | } | |
10363 | ||
10364 | if (gfc_match (" )") != MATCH_YES) | |
10365 | { | |
a4d9b221 | 10366 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10367 | return MATCH_ERROR; |
10368 | } | |
10369 | ||
1be17993 | 10370 | ifc = target_buf; |
30b608eb DK |
10371 | } |
10372 | ||
10373 | /* Construct the data structure. */ | |
ff5b6492 | 10374 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10375 | tb.where = gfc_current_locus; |
30b608eb DK |
10376 | |
10377 | /* Match binding attributes. */ | |
3e15518b | 10378 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10379 | if (m == MATCH_ERROR) |
10380 | return m; | |
10381 | seen_attrs = (m == MATCH_YES); | |
10382 | ||
1be17993 | 10383 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10384 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10385 | { |
10386 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10387 | return MATCH_ERROR; | |
10388 | } | |
3e15518b | 10389 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10390 | { |
10391 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10392 | return MATCH_ERROR; | |
10393 | } | |
10394 | ||
30b608eb DK |
10395 | /* Match the colons. */ |
10396 | m = gfc_match (" ::"); | |
10397 | if (m == MATCH_ERROR) | |
10398 | return m; | |
10399 | seen_colons = (m == MATCH_YES); | |
10400 | if (seen_attrs && !seen_colons) | |
10401 | { | |
a4d9b221 | 10402 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10403 | return MATCH_ERROR; |
10404 | } | |
10405 | ||
f5acf0f2 | 10406 | /* Match the binding names. */ |
1be17993 | 10407 | for(num=1;;num++) |
30b608eb | 10408 | { |
1be17993 JW |
10409 | m = gfc_match_name (name); |
10410 | if (m == MATCH_ERROR) | |
10411 | return m; | |
10412 | if (m == MATCH_NO) | |
b0e5fa94 | 10413 | { |
1be17993 | 10414 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10415 | return MATCH_ERROR; |
10416 | } | |
10417 | ||
524af0d6 | 10418 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10419 | return MATCH_ERROR; |
30b608eb | 10420 | |
1be17993 JW |
10421 | /* Try to match the '=> target', if it's there. */ |
10422 | target = ifc; | |
10423 | m = gfc_match (" =>"); | |
30b608eb DK |
10424 | if (m == MATCH_ERROR) |
10425 | return m; | |
1be17993 | 10426 | if (m == MATCH_YES) |
30b608eb | 10427 | { |
3e15518b | 10428 | if (tb.deferred) |
1be17993 | 10429 | { |
a4d9b221 | 10430 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10431 | return MATCH_ERROR; |
10432 | } | |
10433 | ||
10434 | if (!seen_colons) | |
10435 | { | |
a4d9b221 | 10436 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10437 | " at %C"); |
10438 | return MATCH_ERROR; | |
10439 | } | |
10440 | ||
10441 | m = gfc_match_name (target_buf); | |
10442 | if (m == MATCH_ERROR) | |
10443 | return m; | |
10444 | if (m == MATCH_NO) | |
10445 | { | |
a4d9b221 | 10446 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10447 | return MATCH_ERROR; |
10448 | } | |
10449 | target = target_buf; | |
30b608eb | 10450 | } |
30b608eb | 10451 | |
1be17993 JW |
10452 | /* If no target was found, it has the same name as the binding. */ |
10453 | if (!target) | |
10454 | target = name; | |
30b608eb | 10455 | |
1be17993 JW |
10456 | /* Get the namespace to insert the symbols into. */ |
10457 | ns = block->f2k_derived; | |
10458 | gcc_assert (ns); | |
30b608eb | 10459 | |
1be17993 | 10460 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10461 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10462 | { |
c4100eae | 10463 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10464 | "is not ABSTRACT", block->name); |
10465 | return MATCH_ERROR; | |
10466 | } | |
30b608eb | 10467 | |
1be17993 | 10468 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10469 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10470 | be already there but then typebound is still NULL. */ |
10471 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10472 | if (stree && stree->n.tb) |
1be17993 | 10473 | { |
c4100eae MLI |
10474 | gfc_error ("There is already a procedure with binding name %qs for " |
10475 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10476 | return MATCH_ERROR; |
10477 | } | |
b0e5fa94 | 10478 | |
1be17993 | 10479 | /* Insert it and set attributes. */ |
30b608eb | 10480 | |
9f23af48 MM |
10481 | if (!stree) |
10482 | { | |
10483 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10484 | gcc_assert (stree); | |
10485 | } | |
3e15518b | 10486 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 10487 | |
3e15518b JW |
10488 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10489 | false)) | |
1be17993 | 10490 | return MATCH_ERROR; |
3e15518b | 10491 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
10492 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10493 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 10494 | |
1be17993 JW |
10495 | if (gfc_match_eos () == MATCH_YES) |
10496 | return MATCH_YES; | |
10497 | if (gfc_match_char (',') != MATCH_YES) | |
10498 | goto syntax; | |
e34ccb4c | 10499 | } |
30b608eb | 10500 | |
1be17993 JW |
10501 | syntax: |
10502 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10503 | return MATCH_ERROR; | |
30b608eb DK |
10504 | } |
10505 | ||
10506 | ||
e157f736 DK |
10507 | /* Match a GENERIC procedure binding inside a derived type. */ |
10508 | ||
10509 | match | |
10510 | gfc_match_generic (void) | |
10511 | { | |
10512 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 10513 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
10514 | gfc_symbol* block; |
10515 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10516 | gfc_typebound_proc* tb; | |
e157f736 | 10517 | gfc_namespace* ns; |
94747289 DK |
10518 | interface_type op_type; |
10519 | gfc_intrinsic_op op; | |
e157f736 DK |
10520 | match m; |
10521 | ||
10522 | /* Check current state. */ | |
10523 | if (gfc_current_state () == COMP_DERIVED) | |
10524 | { | |
10525 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10526 | return MATCH_ERROR; | |
10527 | } | |
10528 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10529 | return MATCH_NO; | |
10530 | block = gfc_state_stack->previous->sym; | |
10531 | ns = block->f2k_derived; | |
10532 | gcc_assert (block && ns); | |
10533 | ||
ff5b6492 MM |
10534 | memset (&tbattr, 0, sizeof (tbattr)); |
10535 | tbattr.where = gfc_current_locus; | |
10536 | ||
e157f736 | 10537 | /* See if we get an access-specifier. */ |
713485cc | 10538 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
10539 | if (m == MATCH_ERROR) |
10540 | goto error; | |
10541 | ||
10542 | /* Now the colons, those are required. */ | |
10543 | if (gfc_match (" ::") != MATCH_YES) | |
10544 | { | |
a4d9b221 | 10545 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
10546 | goto error; |
10547 | } | |
10548 | ||
94747289 DK |
10549 | /* Match the binding name; depending on type (operator / generic) format |
10550 | it for future error messages into bind_name. */ | |
f5acf0f2 | 10551 | |
94747289 | 10552 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
10553 | if (m == MATCH_ERROR) |
10554 | return MATCH_ERROR; | |
10555 | if (m == MATCH_NO) | |
10556 | { | |
94747289 | 10557 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
10558 | goto error; |
10559 | } | |
10560 | ||
94747289 | 10561 | switch (op_type) |
e157f736 | 10562 | { |
94747289 | 10563 | case INTERFACE_GENERIC: |
e73d3ca6 | 10564 | case INTERFACE_DTIO: |
94747289 DK |
10565 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10566 | break; | |
f5acf0f2 | 10567 | |
94747289 DK |
10568 | case INTERFACE_USER_OP: |
10569 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10570 | break; | |
f5acf0f2 | 10571 | |
94747289 DK |
10572 | case INTERFACE_INTRINSIC_OP: |
10573 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10574 | gfc_op2string (op)); | |
10575 | break; | |
10576 | ||
377e37c1 SK |
10577 | case INTERFACE_NAMELESS: |
10578 | gfc_error ("Malformed GENERIC statement at %C"); | |
10579 | goto error; | |
10580 | break; | |
10581 | ||
94747289 DK |
10582 | default: |
10583 | gcc_unreachable (); | |
10584 | } | |
e34ccb4c | 10585 | |
94747289 DK |
10586 | /* Match the required =>. */ |
10587 | if (gfc_match (" =>") != MATCH_YES) | |
10588 | { | |
a4d9b221 | 10589 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
10590 | goto error; |
10591 | } | |
f5acf0f2 | 10592 | |
94747289 DK |
10593 | /* Try to find existing GENERIC binding with this name / for this operator; |
10594 | if there is something, check that it is another GENERIC and then extend | |
10595 | it rather than building a new node. Otherwise, create it and put it | |
10596 | at the right position. */ | |
10597 | ||
10598 | switch (op_type) | |
10599 | { | |
e73d3ca6 | 10600 | case INTERFACE_DTIO: |
94747289 DK |
10601 | case INTERFACE_USER_OP: |
10602 | case INTERFACE_GENERIC: | |
10603 | { | |
10604 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10605 | gfc_symtree* st; | |
10606 | ||
10607 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 10608 | tb = st ? st->n.tb : NULL; |
94747289 DK |
10609 | break; |
10610 | } | |
10611 | ||
10612 | case INTERFACE_INTRINSIC_OP: | |
10613 | tb = ns->tb_op[op]; | |
10614 | break; | |
10615 | ||
10616 | default: | |
10617 | gcc_unreachable (); | |
10618 | } | |
10619 | ||
10620 | if (tb) | |
10621 | { | |
e34ccb4c | 10622 | if (!tb->is_generic) |
e157f736 | 10623 | { |
94747289 | 10624 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 10625 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 10626 | " %qs for the derived type %qs at %C", |
94747289 | 10627 | bind_name, block->name); |
e157f736 DK |
10628 | goto error; |
10629 | } | |
10630 | ||
e157f736 DK |
10631 | if (tb->access != tbattr.access) |
10632 | { | |
10633 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 10634 | " defined binding %qs", bind_name); |
e157f736 DK |
10635 | goto error; |
10636 | } | |
10637 | } | |
10638 | else | |
10639 | { | |
3e15518b | 10640 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
10641 | tb->where = gfc_current_locus; |
10642 | tb->access = tbattr.access; | |
10643 | tb->is_generic = 1; | |
10644 | tb->u.generic = NULL; | |
94747289 DK |
10645 | |
10646 | switch (op_type) | |
10647 | { | |
e73d3ca6 | 10648 | case INTERFACE_DTIO: |
94747289 DK |
10649 | case INTERFACE_GENERIC: |
10650 | case INTERFACE_USER_OP: | |
10651 | { | |
10652 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
10653 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10654 | &ns->tb_sym_root, name); | |
94747289 DK |
10655 | gcc_assert (st); |
10656 | st->n.tb = tb; | |
10657 | ||
10658 | break; | |
10659 | } | |
f5acf0f2 | 10660 | |
94747289 DK |
10661 | case INTERFACE_INTRINSIC_OP: |
10662 | ns->tb_op[op] = tb; | |
10663 | break; | |
10664 | ||
10665 | default: | |
10666 | gcc_unreachable (); | |
10667 | } | |
e157f736 DK |
10668 | } |
10669 | ||
10670 | /* Now, match all following names as specific targets. */ | |
10671 | do | |
10672 | { | |
10673 | gfc_symtree* target_st; | |
10674 | gfc_tbp_generic* target; | |
10675 | ||
10676 | m = gfc_match_name (name); | |
10677 | if (m == MATCH_ERROR) | |
10678 | goto error; | |
10679 | if (m == MATCH_NO) | |
10680 | { | |
10681 | gfc_error ("Expected specific binding name at %C"); | |
10682 | goto error; | |
10683 | } | |
10684 | ||
e34ccb4c | 10685 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
10686 | |
10687 | /* See if this is a duplicate specification. */ | |
10688 | for (target = tb->u.generic; target; target = target->next) | |
10689 | if (target_st == target->specific_st) | |
10690 | { | |
c4100eae MLI |
10691 | gfc_error ("%qs already defined as specific binding for the" |
10692 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
10693 | goto error; |
10694 | } | |
10695 | ||
e157f736 DK |
10696 | target = gfc_get_tbp_generic (); |
10697 | target->specific_st = target_st; | |
10698 | target->specific = NULL; | |
10699 | target->next = tb->u.generic; | |
218e1228 TB |
10700 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
10701 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
10702 | tb->u.generic = target; |
10703 | } | |
10704 | while (gfc_match (" ,") == MATCH_YES); | |
10705 | ||
10706 | /* Here should be the end. */ | |
10707 | if (gfc_match_eos () != MATCH_YES) | |
10708 | { | |
10709 | gfc_error ("Junk after GENERIC binding at %C"); | |
10710 | goto error; | |
10711 | } | |
10712 | ||
10713 | return MATCH_YES; | |
10714 | ||
10715 | error: | |
10716 | return MATCH_ERROR; | |
10717 | } | |
10718 | ||
10719 | ||
34523524 DK |
10720 | /* Match a FINAL declaration inside a derived type. */ |
10721 | ||
10722 | match | |
10723 | gfc_match_final_decl (void) | |
10724 | { | |
10725 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10726 | gfc_symbol* sym; | |
10727 | match m; | |
10728 | gfc_namespace* module_ns; | |
10729 | bool first, last; | |
30b608eb | 10730 | gfc_symbol* block; |
34523524 | 10731 | |
33344e0f JW |
10732 | if (gfc_current_form == FORM_FREE) |
10733 | { | |
10734 | char c = gfc_peek_ascii_char (); | |
10735 | if (!gfc_is_whitespace (c) && c != ':') | |
10736 | return MATCH_NO; | |
10737 | } | |
f5acf0f2 | 10738 | |
30b608eb | 10739 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 10740 | { |
33344e0f JW |
10741 | if (gfc_current_form == FORM_FIXED) |
10742 | return MATCH_NO; | |
10743 | ||
34523524 | 10744 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 10745 | "CONTAINS section"); |
34523524 DK |
10746 | return MATCH_ERROR; |
10747 | } | |
10748 | ||
30b608eb DK |
10749 | block = gfc_state_stack->previous->sym; |
10750 | gcc_assert (block); | |
34523524 | 10751 | |
30b608eb DK |
10752 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
10753 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
10754 | { |
10755 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
10756 | " specification part of a MODULE"); | |
10757 | return MATCH_ERROR; | |
10758 | } | |
10759 | ||
10760 | module_ns = gfc_current_ns; | |
10761 | gcc_assert (module_ns); | |
10762 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
10763 | ||
10764 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
10765 | if (gfc_match (" ::") == MATCH_ERROR) | |
10766 | return MATCH_ERROR; | |
10767 | ||
10768 | /* Match the sequence of procedure names. */ | |
10769 | first = true; | |
10770 | last = false; | |
10771 | do | |
10772 | { | |
10773 | gfc_finalizer* f; | |
10774 | ||
10775 | if (first && gfc_match_eos () == MATCH_YES) | |
10776 | { | |
10777 | gfc_error ("Empty FINAL at %C"); | |
10778 | return MATCH_ERROR; | |
10779 | } | |
10780 | ||
10781 | m = gfc_match_name (name); | |
10782 | if (m == MATCH_NO) | |
10783 | { | |
10784 | gfc_error ("Expected module procedure name at %C"); | |
10785 | return MATCH_ERROR; | |
10786 | } | |
10787 | else if (m != MATCH_YES) | |
10788 | return MATCH_ERROR; | |
10789 | ||
10790 | if (gfc_match_eos () == MATCH_YES) | |
10791 | last = true; | |
10792 | if (!last && gfc_match_char (',') != MATCH_YES) | |
10793 | { | |
a4d9b221 | 10794 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
10795 | return MATCH_ERROR; |
10796 | } | |
10797 | ||
10798 | if (gfc_get_symbol (name, module_ns, &sym)) | |
10799 | { | |
c4100eae | 10800 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
10801 | return MATCH_ERROR; |
10802 | } | |
10803 | ||
10804 | /* Mark the symbol as module procedure. */ | |
10805 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 10806 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
10807 | return MATCH_ERROR; |
10808 | ||
10809 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 10810 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 10811 | if (f->proc_sym == sym) |
34523524 | 10812 | { |
546c8974 | 10813 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
10814 | name); |
10815 | return MATCH_ERROR; | |
10816 | } | |
10817 | ||
10818 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 10819 | gcc_assert (block->f2k_derived); |
2050626a | 10820 | sym->refs++; |
ece3f663 | 10821 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
10822 | f->proc_sym = sym; |
10823 | f->proc_tree = NULL; | |
34523524 | 10824 | f->where = gfc_current_locus; |
30b608eb DK |
10825 | f->next = block->f2k_derived->finalizers; |
10826 | block->f2k_derived->finalizers = f; | |
34523524 DK |
10827 | |
10828 | first = false; | |
10829 | } | |
10830 | while (!last); | |
10831 | ||
10832 | return MATCH_YES; | |
10833 | } | |
08a6b8e0 TB |
10834 | |
10835 | ||
10836 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
10837 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
10838 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
10839 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
10840 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
10841 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
10842 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
10843 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
10844 | }; |
10845 | ||
10846 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
10847 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
10848 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
10849 | ||
10850 | TODO: We should support all GCC attributes using the same syntax for | |
10851 | the attribute list, i.e. the list in C | |
10852 | __attributes(( attribute-list )) | |
10853 | matches then | |
10854 | !GCC$ ATTRIBUTES attribute-list :: | |
10855 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
10856 | saved into a TREE. | |
10857 | ||
10858 | As there is absolutely no risk of confusion, we should never return | |
10859 | MATCH_NO. */ | |
10860 | match | |
10861 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 10862 | { |
08a6b8e0 TB |
10863 | symbol_attribute attr; |
10864 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10865 | unsigned id; | |
10866 | gfc_symbol *sym; | |
10867 | match m; | |
10868 | ||
10869 | gfc_clear_attr (&attr); | |
10870 | for(;;) | |
10871 | { | |
10872 | char ch; | |
10873 | ||
10874 | if (gfc_match_name (name) != MATCH_YES) | |
10875 | return MATCH_ERROR; | |
10876 | ||
10877 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
10878 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
10879 | break; | |
10880 | ||
10881 | if (id == EXT_ATTR_LAST) | |
10882 | { | |
10883 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
10884 | return MATCH_ERROR; | |
10885 | } | |
10886 | ||
524af0d6 | 10887 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
10888 | return MATCH_ERROR; |
10889 | ||
10890 | gfc_gobble_whitespace (); | |
10891 | ch = gfc_next_ascii_char (); | |
10892 | if (ch == ':') | |
10893 | { | |
10894 | /* This is the successful exit condition for the loop. */ | |
10895 | if (gfc_next_ascii_char () == ':') | |
10896 | break; | |
10897 | } | |
10898 | ||
10899 | if (ch == ',') | |
10900 | continue; | |
10901 | ||
10902 | goto syntax; | |
10903 | } | |
10904 | ||
10905 | if (gfc_match_eos () == MATCH_YES) | |
10906 | goto syntax; | |
10907 | ||
10908 | for(;;) | |
10909 | { | |
10910 | m = gfc_match_name (name); | |
10911 | if (m != MATCH_YES) | |
10912 | return m; | |
10913 | ||
10914 | if (find_special (name, &sym, true)) | |
10915 | return MATCH_ERROR; | |
f5acf0f2 | 10916 | |
08a6b8e0 TB |
10917 | sym->attr.ext_attr |= attr.ext_attr; |
10918 | ||
10919 | if (gfc_match_eos () == MATCH_YES) | |
10920 | break; | |
10921 | ||
10922 | if (gfc_match_char (',') != MATCH_YES) | |
10923 | goto syntax; | |
10924 | } | |
10925 | ||
10926 | return MATCH_YES; | |
10927 | ||
10928 | syntax: | |
10929 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
10930 | return MATCH_ERROR; | |
10931 | } |