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6de9cd9a | 1 | /* Declaration statement matcher |
8d9254fc | 2 | Copyright (C) 2002-2020 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" |
e8cecccc | 31 | #include "target.h" |
ca39e6f2 FXC |
32 | |
33 | /* Macros to access allocate memory for gfc_data_variable, | |
34 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
35 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
36 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
37 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
38 | |
39 | ||
524af0d6 | 40 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
41 | |
42 | ||
2054fc29 | 43 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
44 | during a type-declaration statement. */ |
45 | ||
46 | static int old_char_selector; | |
47 | ||
46fa431d | 48 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
49 | statement, they get them from the following static variables. The |
50 | first part of a declaration sets these variables and the second | |
51 | part copies these into symbol structures. */ | |
52 | ||
53 | static gfc_typespec current_ts; | |
54 | ||
55 | static symbol_attribute current_attr; | |
56 | static gfc_array_spec *current_as; | |
57 | static int colon_seen; | |
6f855a26 | 58 | static int attr_seen; |
6de9cd9a | 59 | |
a8b3b0b6 | 60 | /* The current binding label (if any). */ |
9975a30b | 61 | static const char* curr_binding_label; |
a8b3b0b6 CR |
62 | /* Need to know how many identifiers are on the current data declaration |
63 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
64 | static int num_idents_on_line; | |
65 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
66 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
67 | static int has_name_equals = 0; | |
68 | ||
25d8f0a2 TS |
69 | /* Initializer of the previous enumerator. */ |
70 | ||
71 | static gfc_expr *last_initializer; | |
72 | ||
73 | /* History of all the enumerators is maintained, so that | |
74 | kind values of all the enumerators could be updated depending | |
75 | upon the maximum initialized value. */ | |
76 | ||
77 | typedef struct enumerator_history | |
78 | { | |
79 | gfc_symbol *sym; | |
80 | gfc_expr *initializer; | |
81 | struct enumerator_history *next; | |
82 | } | |
83 | enumerator_history; | |
84 | ||
85 | /* Header of enum history chain. */ | |
86 | ||
87 | static enumerator_history *enum_history = NULL; | |
88 | ||
89 | /* Pointer of enum history node containing largest initializer. */ | |
90 | ||
91 | static enumerator_history *max_enum = NULL; | |
92 | ||
6de9cd9a DN |
93 | /* gfc_new_block points to the symbol of a newly matched block. */ |
94 | ||
95 | gfc_symbol *gfc_new_block; | |
96 | ||
1c8bcdf7 | 97 | bool gfc_matching_function; |
e2d29968 | 98 | |
170a8bd6 EB |
99 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
100 | int directive_unroll = -1; | |
101 | ||
2bd86b95 HA |
102 | /* Set upon parsing supported !GCC$ pragmas for use in the next loop. */ |
103 | bool directive_ivdep = false; | |
104 | bool directive_vector = false; | |
105 | bool directive_novector = false; | |
106 | ||
facf0354 ML |
107 | /* Map of middle-end built-ins that should be vectorized. */ |
108 | hash_map<nofree_string_hash, int> *gfc_vectorized_builtins; | |
109 | ||
5bab4c96 PT |
110 | /* If a kind expression of a component of a parameterized derived type is |
111 | parameterized, temporarily store the expression here. */ | |
112 | static gfc_expr *saved_kind_expr = NULL; | |
113 | ||
114 | /* Used to store the parameter list arising in a PDT declaration and | |
115 | in the typespec of a PDT variable or component. */ | |
116 | static gfc_actual_arglist *decl_type_param_list; | |
117 | static gfc_actual_arglist *type_param_spec_list; | |
118 | ||
294fbfc8 TS |
119 | /********************* DATA statement subroutines *********************/ |
120 | ||
2220652d PT |
121 | static bool in_match_data = false; |
122 | ||
123 | bool | |
124 | gfc_in_match_data (void) | |
125 | { | |
126 | return in_match_data; | |
127 | } | |
128 | ||
ca39e6f2 FXC |
129 | static void |
130 | set_in_match_data (bool set_value) | |
2220652d PT |
131 | { |
132 | in_match_data = set_value; | |
133 | } | |
134 | ||
294fbfc8 TS |
135 | /* Free a gfc_data_variable structure and everything beneath it. */ |
136 | ||
137 | static void | |
636dff67 | 138 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
139 | { |
140 | gfc_data_variable *q; | |
141 | ||
142 | for (; p; p = q) | |
143 | { | |
144 | q = p->next; | |
145 | gfc_free_expr (p->expr); | |
146 | gfc_free_iterator (&p->iter, 0); | |
147 | free_variable (p->list); | |
cede9502 | 148 | free (p); |
294fbfc8 TS |
149 | } |
150 | } | |
151 | ||
152 | ||
153 | /* Free a gfc_data_value structure and everything beneath it. */ | |
154 | ||
155 | static void | |
636dff67 | 156 | free_value (gfc_data_value *p) |
294fbfc8 TS |
157 | { |
158 | gfc_data_value *q; | |
159 | ||
160 | for (; p; p = q) | |
161 | { | |
162 | q = p->next; | |
c9d75a48 | 163 | mpz_clear (p->repeat); |
294fbfc8 | 164 | gfc_free_expr (p->expr); |
cede9502 | 165 | free (p); |
294fbfc8 TS |
166 | } |
167 | } | |
168 | ||
169 | ||
170 | /* Free a list of gfc_data structures. */ | |
171 | ||
172 | void | |
636dff67 | 173 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
174 | { |
175 | gfc_data *q; | |
176 | ||
177 | for (; p; p = q) | |
178 | { | |
179 | q = p->next; | |
294fbfc8 TS |
180 | free_variable (p->var); |
181 | free_value (p->value); | |
cede9502 | 182 | free (p); |
294fbfc8 TS |
183 | } |
184 | } | |
185 | ||
186 | ||
a9f6f1f2 | 187 | /* Free all data in a namespace. */ |
636dff67 | 188 | |
a9f6f1f2 | 189 | static void |
66e4ab31 | 190 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
191 | { |
192 | gfc_data *d; | |
193 | ||
194 | for (;ns->data;) | |
195 | { | |
196 | d = ns->data->next; | |
cede9502 | 197 | free (ns->data); |
a9f6f1f2 JD |
198 | ns->data = d; |
199 | } | |
200 | } | |
201 | ||
d5e2274d SB |
202 | /* Reject data parsed since the last restore point was marked. */ |
203 | ||
204 | void | |
205 | gfc_reject_data (gfc_namespace *ns) | |
206 | { | |
207 | gfc_data *d; | |
208 | ||
209 | while (ns->data && ns->data != ns->old_data) | |
210 | { | |
211 | d = ns->data->next; | |
212 | free (ns->data); | |
213 | ns->data = d; | |
214 | } | |
215 | } | |
a9f6f1f2 | 216 | |
294fbfc8 TS |
217 | static match var_element (gfc_data_variable *); |
218 | ||
219 | /* Match a list of variables terminated by an iterator and a right | |
220 | parenthesis. */ | |
221 | ||
222 | static match | |
636dff67 | 223 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
224 | { |
225 | gfc_data_variable *tail, var; | |
226 | match m; | |
227 | ||
228 | m = var_element (&var); | |
229 | if (m == MATCH_ERROR) | |
230 | return MATCH_ERROR; | |
231 | if (m == MATCH_NO) | |
232 | goto syntax; | |
233 | ||
234 | tail = gfc_get_data_variable (); | |
235 | *tail = var; | |
236 | ||
237 | parent->list = tail; | |
238 | ||
239 | for (;;) | |
240 | { | |
241 | if (gfc_match_char (',') != MATCH_YES) | |
242 | goto syntax; | |
243 | ||
244 | m = gfc_match_iterator (&parent->iter, 1); | |
245 | if (m == MATCH_YES) | |
246 | break; | |
247 | if (m == MATCH_ERROR) | |
248 | return MATCH_ERROR; | |
249 | ||
250 | m = var_element (&var); | |
251 | if (m == MATCH_ERROR) | |
252 | return MATCH_ERROR; | |
253 | if (m == MATCH_NO) | |
254 | goto syntax; | |
255 | ||
256 | tail->next = gfc_get_data_variable (); | |
257 | tail = tail->next; | |
258 | ||
259 | *tail = var; | |
260 | } | |
261 | ||
262 | if (gfc_match_char (')') != MATCH_YES) | |
263 | goto syntax; | |
264 | return MATCH_YES; | |
265 | ||
266 | syntax: | |
267 | gfc_syntax_error (ST_DATA); | |
268 | return MATCH_ERROR; | |
269 | } | |
270 | ||
271 | ||
272 | /* Match a single element in a data variable list, which can be a | |
273 | variable-iterator list. */ | |
274 | ||
275 | static match | |
7b901ac4 | 276 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
277 | { |
278 | match m; | |
279 | gfc_symbol *sym; | |
280 | ||
7b901ac4 | 281 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
282 | |
283 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 284 | return var_list (new_var); |
294fbfc8 | 285 | |
7b901ac4 | 286 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
287 | if (m != MATCH_YES) |
288 | return m; | |
289 | ||
094a0ecc SK |
290 | if (new_var->expr->expr_type == EXPR_CONSTANT |
291 | && new_var->expr->symtree == NULL) | |
292 | { | |
293 | gfc_error ("Inquiry parameter cannot appear in a " | |
294 | "data-stmt-object-list at %C"); | |
295 | return MATCH_ERROR; | |
296 | } | |
297 | ||
7b901ac4 | 298 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 299 | |
f37e928c | 300 | /* Symbol should already have an associated type. */ |
524af0d6 | 301 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
302 | return MATCH_ERROR; |
303 | ||
636dff67 SK |
304 | if (!sym->attr.function && gfc_current_ns->parent |
305 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 306 | { |
c4100eae | 307 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 308 | "statement at %C", sym->name); |
294fbfc8 TS |
309 | return MATCH_ERROR; |
310 | } | |
311 | ||
4075a94e | 312 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 313 | && sym->attr.in_common |
524af0d6 | 314 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 315 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 316 | sym->name)) |
4075a94e | 317 | return MATCH_ERROR; |
294fbfc8 | 318 | |
524af0d6 | 319 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
320 | return MATCH_ERROR; |
321 | ||
322 | return MATCH_YES; | |
323 | } | |
324 | ||
325 | ||
326 | /* Match the top-level list of data variables. */ | |
327 | ||
328 | static match | |
636dff67 | 329 | top_var_list (gfc_data *d) |
294fbfc8 | 330 | { |
7b901ac4 | 331 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
332 | match m; |
333 | ||
334 | tail = NULL; | |
335 | ||
336 | for (;;) | |
337 | { | |
338 | m = var_element (&var); | |
339 | if (m == MATCH_NO) | |
340 | goto syntax; | |
341 | if (m == MATCH_ERROR) | |
342 | return MATCH_ERROR; | |
343 | ||
7b901ac4 KG |
344 | new_var = gfc_get_data_variable (); |
345 | *new_var = var; | |
bebf94af SK |
346 | if (new_var->expr) |
347 | new_var->expr->where = gfc_current_locus; | |
294fbfc8 TS |
348 | |
349 | if (tail == NULL) | |
7b901ac4 | 350 | d->var = new_var; |
294fbfc8 | 351 | else |
7b901ac4 | 352 | tail->next = new_var; |
294fbfc8 | 353 | |
7b901ac4 | 354 | tail = new_var; |
294fbfc8 TS |
355 | |
356 | if (gfc_match_char ('/') == MATCH_YES) | |
357 | break; | |
358 | if (gfc_match_char (',') != MATCH_YES) | |
359 | goto syntax; | |
360 | } | |
361 | ||
362 | return MATCH_YES; | |
363 | ||
364 | syntax: | |
365 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 366 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
367 | return MATCH_ERROR; |
368 | } | |
369 | ||
370 | ||
371 | static match | |
636dff67 | 372 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
373 | { |
374 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 375 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
376 | gfc_expr *expr; |
377 | match m; | |
36d3fb4c | 378 | locus old_loc; |
294fbfc8 TS |
379 | |
380 | m = gfc_match_literal_constant (&expr, 1); | |
381 | if (m == MATCH_YES) | |
382 | { | |
383 | *result = expr; | |
384 | return MATCH_YES; | |
385 | } | |
386 | ||
387 | if (m == MATCH_ERROR) | |
388 | return MATCH_ERROR; | |
389 | ||
390 | m = gfc_match_null (result); | |
391 | if (m != MATCH_NO) | |
392 | return m; | |
393 | ||
36d3fb4c PT |
394 | old_loc = gfc_current_locus; |
395 | ||
396 | /* Should this be a structure component, try to match it | |
397 | before matching a name. */ | |
398 | m = gfc_match_rvalue (result); | |
399 | if (m == MATCH_ERROR) | |
400 | return m; | |
401 | ||
402 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
403 | { | |
524af0d6 | 404 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
405 | m = MATCH_ERROR; |
406 | return m; | |
407 | } | |
46f4f794 | 408 | else if (m == MATCH_YES) |
b6e841a6 | 409 | { |
19adb97a SK |
410 | /* If a parameter inquiry ends up here, symtree is NULL but **result |
411 | contains the right constant expression. Check here. */ | |
412 | if ((*result)->symtree == NULL | |
413 | && (*result)->expr_type == EXPR_CONSTANT | |
0a524296 | 414 | && ((*result)->ts.type == BT_INTEGER |
19adb97a SK |
415 | || (*result)->ts.type == BT_REAL)) |
416 | return m; | |
417 | ||
b6e841a6 SK |
418 | /* F2018:R845 data-stmt-constant is initial-data-target. |
419 | A data-stmt-constant shall be ... initial-data-target if and | |
420 | only if the corresponding data-stmt-object has the POINTER | |
421 | attribute. ... If data-stmt-constant is initial-data-target | |
422 | the corresponding data statement object shall be | |
423 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
424 | data target; the data statement object is initially associated | |
425 | with the target. */ | |
426 | if ((*result)->symtree->n.sym->attr.save | |
427 | && (*result)->symtree->n.sym->attr.target) | |
428 | return m; | |
429 | gfc_free_expr (*result); | |
430 | } | |
36d3fb4c PT |
431 | |
432 | gfc_current_locus = old_loc; | |
433 | ||
294fbfc8 TS |
434 | m = gfc_match_name (name); |
435 | if (m != MATCH_YES) | |
436 | return m; | |
437 | ||
438 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
439 | return MATCH_ERROR; | |
440 | ||
c3f34952 TB |
441 | if (sym && sym->attr.generic) |
442 | dt_sym = gfc_find_dt_in_generic (sym); | |
443 | ||
294fbfc8 | 444 | if (sym == NULL |
c3f34952 | 445 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 446 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 447 | { |
c4100eae | 448 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 449 | name); |
89f1f37e | 450 | *result = NULL; |
294fbfc8 TS |
451 | return MATCH_ERROR; |
452 | } | |
f6288c24 | 453 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 454 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 455 | |
d46e0870 JD |
456 | /* Check to see if the value is an initialization array expression. */ |
457 | if (sym->value->expr_type == EXPR_ARRAY) | |
458 | { | |
459 | gfc_current_locus = old_loc; | |
460 | ||
461 | m = gfc_match_init_expr (result); | |
462 | if (m == MATCH_ERROR) | |
463 | return m; | |
464 | ||
465 | if (m == MATCH_YES) | |
466 | { | |
524af0d6 | 467 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
468 | m = MATCH_ERROR; |
469 | ||
470 | if ((*result)->expr_type == EXPR_CONSTANT) | |
471 | return m; | |
472 | else | |
473 | { | |
474 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
475 | return MATCH_ERROR; | |
476 | } | |
477 | } | |
478 | } | |
479 | ||
294fbfc8 TS |
480 | *result = gfc_copy_expr (sym->value); |
481 | return MATCH_YES; | |
482 | } | |
483 | ||
484 | ||
485 | /* Match a list of values in a DATA statement. The leading '/' has | |
486 | already been seen at this point. */ | |
487 | ||
488 | static match | |
636dff67 | 489 | top_val_list (gfc_data *data) |
294fbfc8 | 490 | { |
7b901ac4 | 491 | gfc_data_value *new_val, *tail; |
294fbfc8 | 492 | gfc_expr *expr; |
294fbfc8 TS |
493 | match m; |
494 | ||
495 | tail = NULL; | |
496 | ||
497 | for (;;) | |
498 | { | |
499 | m = match_data_constant (&expr); | |
500 | if (m == MATCH_NO) | |
501 | goto syntax; | |
502 | if (m == MATCH_ERROR) | |
503 | return MATCH_ERROR; | |
504 | ||
7b901ac4 KG |
505 | new_val = gfc_get_data_value (); |
506 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
507 | |
508 | if (tail == NULL) | |
7b901ac4 | 509 | data->value = new_val; |
294fbfc8 | 510 | else |
7b901ac4 | 511 | tail->next = new_val; |
294fbfc8 | 512 | |
7b901ac4 | 513 | tail = new_val; |
294fbfc8 TS |
514 | |
515 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
516 | { | |
517 | tail->expr = expr; | |
f2112868 | 518 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
519 | } |
520 | else | |
521 | { | |
46f4f794 | 522 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 523 | gfc_free_expr (expr); |
294fbfc8 TS |
524 | |
525 | m = match_data_constant (&tail->expr); | |
526 | if (m == MATCH_NO) | |
527 | goto syntax; | |
528 | if (m == MATCH_ERROR) | |
529 | return MATCH_ERROR; | |
530 | } | |
531 | ||
532 | if (gfc_match_char ('/') == MATCH_YES) | |
533 | break; | |
534 | if (gfc_match_char (',') == MATCH_NO) | |
535 | goto syntax; | |
536 | } | |
537 | ||
538 | return MATCH_YES; | |
539 | ||
540 | syntax: | |
541 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 542 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
543 | return MATCH_ERROR; |
544 | } | |
545 | ||
546 | ||
547 | /* Matches an old style initialization. */ | |
548 | ||
549 | static match | |
550 | match_old_style_init (const char *name) | |
551 | { | |
552 | match m; | |
553 | gfc_symtree *st; | |
ed0e3607 | 554 | gfc_symbol *sym; |
8dc63166 | 555 | gfc_data *newdata, *nd; |
294fbfc8 TS |
556 | |
557 | /* Set up data structure to hold initializers. */ | |
558 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
559 | sym = st->n.sym; |
560 | ||
294fbfc8 TS |
561 | newdata = gfc_get_data (); |
562 | newdata->var = gfc_get_data_variable (); | |
563 | newdata->var->expr = gfc_get_variable_expr (st); | |
e11449d1 | 564 | newdata->var->expr->where = sym->declared_at; |
8c5c0b80 | 565 | newdata->where = gfc_current_locus; |
294fbfc8 | 566 | |
66e4ab31 | 567 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
568 | m = top_val_list (newdata); |
569 | if (m != MATCH_YES) | |
570 | { | |
cede9502 | 571 | free (newdata); |
294fbfc8 TS |
572 | return m; |
573 | } | |
574 | ||
8dc63166 SK |
575 | /* Check that a BOZ did not creep into an old-style initialization. */ |
576 | for (nd = newdata; nd; nd = nd->next) | |
577 | { | |
578 | if (nd->value->expr->ts.type == BT_BOZ | |
579 | && gfc_invalid_boz ("BOZ at %L cannot appear in an old-style " | |
580 | "initialization", &nd->value->expr->where)) | |
581 | return MATCH_ERROR; | |
582 | ||
583 | if (nd->var->expr->ts.type != BT_INTEGER | |
584 | && nd->var->expr->ts.type != BT_REAL | |
585 | && nd->value->expr->ts.type == BT_BOZ) | |
586 | { | |
878f88b7 SK |
587 | gfc_error ("BOZ literal constant near %L cannot be assigned to " |
588 | "a %qs variable in an old-style initialization", | |
589 | &nd->value->expr->where, | |
590 | gfc_typename (&nd->value->expr->ts)); | |
8dc63166 SK |
591 | return MATCH_ERROR; |
592 | } | |
593 | } | |
594 | ||
294fbfc8 TS |
595 | if (gfc_pure (NULL)) |
596 | { | |
597 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 598 | free (newdata); |
294fbfc8 TS |
599 | return MATCH_ERROR; |
600 | } | |
ccd7751b | 601 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 602 | |
ed0e3607 | 603 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 604 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 605 | { |
cede9502 | 606 | free (newdata); |
ed0e3607 AL |
607 | return MATCH_ERROR; |
608 | } | |
609 | ||
294fbfc8 TS |
610 | /* Chain in namespace list of DATA initializers. */ |
611 | newdata->next = gfc_current_ns->data; | |
612 | gfc_current_ns->data = newdata; | |
613 | ||
614 | return m; | |
615 | } | |
616 | ||
636dff67 | 617 | |
294fbfc8 | 618 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 619 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 620 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 621 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
622 | |
623 | match | |
624 | gfc_match_data (void) | |
625 | { | |
7b901ac4 | 626 | gfc_data *new_data; |
02543f02 | 627 | gfc_expr *e; |
bebf94af | 628 | gfc_ref *ref; |
294fbfc8 | 629 | match m; |
623c32bc SK |
630 | char c; |
631 | ||
632 | /* DATA has been matched. In free form source code, the next character | |
719f5a10 SK |
633 | needs to be whitespace or '(' from an implied do-loop. Check that |
634 | here. */ | |
623c32bc | 635 | c = gfc_peek_ascii_char (); |
719f5a10 | 636 | if (gfc_current_form == FORM_FREE && !gfc_is_whitespace (c) && c != '(') |
623c32bc | 637 | return MATCH_NO; |
294fbfc8 | 638 | |
5f0ba745 SK |
639 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
640 | if ((gfc_current_state () == COMP_FUNCTION | |
641 | || gfc_current_state () == COMP_SUBROUTINE) | |
642 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
643 | { | |
644 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
645 | return MATCH_ERROR; | |
646 | } | |
647 | ||
ca39e6f2 | 648 | set_in_match_data (true); |
2220652d | 649 | |
294fbfc8 TS |
650 | for (;;) |
651 | { | |
7b901ac4 KG |
652 | new_data = gfc_get_data (); |
653 | new_data->where = gfc_current_locus; | |
294fbfc8 | 654 | |
7b901ac4 | 655 | m = top_var_list (new_data); |
294fbfc8 TS |
656 | if (m != MATCH_YES) |
657 | goto cleanup; | |
658 | ||
c034c38f SK |
659 | if (new_data->var->iter.var |
660 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
661 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
662 | && new_data->var->list | |
663 | && new_data->var->list->expr | |
664 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
665 | && new_data->var->list->expr->ref | |
666 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
667 | { | |
668 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
669 | "statement", &new_data->var->list->expr->where); | |
670 | goto cleanup; | |
671 | } | |
672 | ||
02543f02 SK |
673 | /* Check for an entity with an allocatable component, which is not |
674 | allowed. */ | |
675 | e = new_data->var->expr; | |
676 | if (e) | |
677 | { | |
678 | bool invalid; | |
679 | ||
680 | invalid = false; | |
bebf94af | 681 | for (ref = e->ref; ref; ref = ref->next) |
02543f02 SK |
682 | if ((ref->type == REF_COMPONENT |
683 | && ref->u.c.component->attr.allocatable) | |
684 | || (ref->type == REF_ARRAY | |
685 | && e->symtree->n.sym->attr.pointer != 1 | |
686 | && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED)) | |
687 | invalid = true; | |
688 | ||
689 | if (invalid) | |
690 | { | |
691 | gfc_error ("Allocatable component or deferred-shaped array " | |
692 | "near %C in DATA statement"); | |
693 | goto cleanup; | |
694 | } | |
bebf94af SK |
695 | |
696 | /* F2008:C567 (R536) A data-i-do-object or a variable that appears | |
697 | as a data-stmt-object shall not be an object designator in which | |
698 | a pointer appears other than as the entire rightmost part-ref. */ | |
d42a2e46 FR |
699 | if (!e->ref && e->ts.type == BT_DERIVED |
700 | && e->symtree->n.sym->attr.pointer) | |
701 | goto partref; | |
702 | ||
bebf94af SK |
703 | ref = e->ref; |
704 | if (e->symtree->n.sym->ts.type == BT_DERIVED | |
705 | && e->symtree->n.sym->attr.pointer | |
706 | && ref->type == REF_COMPONENT) | |
707 | goto partref; | |
708 | ||
709 | for (; ref; ref = ref->next) | |
710 | if (ref->type == REF_COMPONENT | |
711 | && ref->u.c.component->attr.pointer | |
712 | && ref->next) | |
713 | goto partref; | |
02543f02 SK |
714 | } |
715 | ||
7b901ac4 | 716 | m = top_val_list (new_data); |
294fbfc8 TS |
717 | if (m != MATCH_YES) |
718 | goto cleanup; | |
719 | ||
7b901ac4 KG |
720 | new_data->next = gfc_current_ns->data; |
721 | gfc_current_ns->data = new_data; | |
294fbfc8 | 722 | |
c77b6f95 ME |
723 | /* A BOZ literal constant cannot appear in a structure constructor. |
724 | Check for that here for a data statement value. */ | |
725 | if (new_data->value->expr->ts.type == BT_DERIVED | |
726 | && new_data->value->expr->value.constructor) | |
727 | { | |
728 | gfc_constructor *c; | |
729 | c = gfc_constructor_first (new_data->value->expr->value.constructor); | |
730 | for (; c; c = gfc_constructor_next (c)) | |
731 | if (c->expr->ts.type == BT_BOZ) | |
732 | { | |
733 | gfc_error ("BOZ literal constant at %L cannot appear in a " | |
734 | "structure constructor", &c->expr->where); | |
735 | return MATCH_ERROR; | |
736 | } | |
737 | } | |
738 | ||
294fbfc8 TS |
739 | if (gfc_match_eos () == MATCH_YES) |
740 | break; | |
741 | ||
742 | gfc_match_char (','); /* Optional comma */ | |
743 | } | |
744 | ||
ca39e6f2 | 745 | set_in_match_data (false); |
2220652d | 746 | |
294fbfc8 TS |
747 | if (gfc_pure (NULL)) |
748 | { | |
749 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
750 | return MATCH_ERROR; | |
751 | } | |
ccd7751b | 752 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 753 | |
294fbfc8 TS |
754 | return MATCH_YES; |
755 | ||
bebf94af SK |
756 | partref: |
757 | ||
758 | gfc_error ("part-ref with pointer attribute near %L is not " | |
759 | "rightmost part-ref of data-stmt-object", | |
760 | &e->where); | |
761 | ||
294fbfc8 | 762 | cleanup: |
ca39e6f2 | 763 | set_in_match_data (false); |
7b901ac4 | 764 | gfc_free_data (new_data); |
294fbfc8 TS |
765 | return MATCH_ERROR; |
766 | } | |
767 | ||
768 | ||
769 | /************************ Declaration statements *********************/ | |
770 | ||
d3a9eea2 | 771 | |
f6288c24 FR |
772 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
773 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 774 | and is surrounded by '/'. |
f6288c24 FR |
775 | The typespec ts must match the typespec of the variable which the |
776 | clist is initializing. | |
6442a6f4 | 777 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
778 | corresponding to array elements or a scalar (as == NULL). */ |
779 | ||
780 | static match | |
781 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
782 | { | |
783 | gfc_constructor_base array_head = NULL; | |
784 | gfc_expr *expr = NULL; | |
e11449d1 | 785 | match m = MATCH_ERROR; |
f6288c24 | 786 | locus where; |
9b24c104 | 787 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
788 | bool scalar; |
789 | int cmp; | |
790 | ||
791 | gcc_assert (ts); | |
792 | ||
f6288c24 FR |
793 | /* We have already matched '/' - now look for a constant list, as with |
794 | top_val_list from decl.c, but append the result to an array. */ | |
795 | if (gfc_match ("/") == MATCH_YES) | |
796 | { | |
797 | gfc_error ("Empty old style initializer list at %C"); | |
e11449d1 | 798 | return MATCH_ERROR; |
f6288c24 FR |
799 | } |
800 | ||
801 | where = gfc_current_locus; | |
e11449d1 FR |
802 | scalar = !as || !as->rank; |
803 | ||
804 | if (!scalar && !spec_size (as, &as_size)) | |
805 | { | |
806 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
807 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
808 | /* Nothing to cleanup yet. */ | |
809 | return MATCH_ERROR; | |
810 | } | |
811 | ||
812 | mpz_init_set_ui (repeat, 0); | |
813 | ||
f6288c24 FR |
814 | for (;;) |
815 | { | |
816 | m = match_data_constant (&expr); | |
817 | if (m != MATCH_YES) | |
818 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
819 | if (m == MATCH_NO) | |
820 | goto syntax; | |
821 | if (m == MATCH_ERROR) | |
822 | goto cleanup; | |
823 | ||
824 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
825 | if ( gfc_match_char ('*') == MATCH_YES) | |
826 | { | |
827 | if (scalar) | |
828 | { | |
829 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
830 | goto cleanup; | |
831 | } | |
832 | if (expr->ts.type != BT_INTEGER) | |
833 | { | |
834 | gfc_error ("Repeat spec must be an integer at %C"); | |
835 | goto cleanup; | |
836 | } | |
837 | mpz_set (repeat, expr->value.integer); | |
838 | gfc_free_expr (expr); | |
839 | expr = NULL; | |
840 | ||
841 | m = match_data_constant (&expr); | |
842 | if (m == MATCH_NO) | |
e11449d1 FR |
843 | { |
844 | m = MATCH_ERROR; | |
845 | gfc_error ("Expected data constant after repeat spec at %C"); | |
846 | } | |
f6288c24 FR |
847 | if (m != MATCH_YES) |
848 | goto cleanup; | |
849 | } | |
850 | /* No repeat spec, we matched the data constant itself. */ | |
851 | else | |
852 | mpz_set_ui (repeat, 1); | |
853 | ||
854 | if (!scalar) | |
855 | { | |
856 | /* Add the constant initializer as many times as repeated. */ | |
857 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
858 | { | |
859 | /* Make sure types of elements match */ | |
860 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
861 | && !gfc_convert_type (expr, ts, 1)) | |
862 | goto cleanup; | |
863 | ||
864 | gfc_constructor_append_expr (&array_head, | |
865 | gfc_copy_expr (expr), &gfc_current_locus); | |
866 | } | |
867 | ||
868 | gfc_free_expr (expr); | |
869 | expr = NULL; | |
870 | } | |
871 | ||
872 | /* For scalar initializers quit after one element. */ | |
873 | else | |
874 | { | |
875 | if(gfc_match_char ('/') != MATCH_YES) | |
876 | { | |
877 | gfc_error ("End of scalar initializer expected at %C"); | |
878 | goto cleanup; | |
879 | } | |
880 | break; | |
881 | } | |
882 | ||
883 | if (gfc_match_char ('/') == MATCH_YES) | |
884 | break; | |
885 | if (gfc_match_char (',') == MATCH_NO) | |
886 | goto syntax; | |
887 | } | |
888 | ||
e11449d1 FR |
889 | /* If we break early from here out, we encountered an error. */ |
890 | m = MATCH_ERROR; | |
891 | ||
f6288c24 FR |
892 | /* Set up expr as an array constructor. */ |
893 | if (!scalar) | |
894 | { | |
895 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
896 | expr->ts = *ts; | |
897 | expr->value.constructor = array_head; | |
898 | ||
899 | expr->rank = as->rank; | |
900 | expr->shape = gfc_get_shape (expr->rank); | |
901 | ||
9b24c104 FR |
902 | /* Validate sizes. We built expr ourselves, so cons_size will be |
903 | constant (we fail above for non-constant expressions). | |
e11449d1 | 904 | We still need to verify that the sizes match. */ |
9b24c104 | 905 | gcc_assert (gfc_array_size (expr, &cons_size)); |
e11449d1 FR |
906 | cmp = mpz_cmp (cons_size, as_size); |
907 | if (cmp < 0) | |
908 | gfc_error ("Not enough elements in array initializer at %C"); | |
909 | else if (cmp > 0) | |
910 | gfc_error ("Too many elements in array initializer at %C"); | |
9b24c104 | 911 | mpz_clear (cons_size); |
f6288c24 | 912 | if (cmp) |
9b24c104 | 913 | goto cleanup; |
f6288c24 FR |
914 | } |
915 | ||
916 | /* Make sure scalar types match. */ | |
917 | else if (!gfc_compare_types (&expr->ts, ts) | |
918 | && !gfc_convert_type (expr, ts, 1)) | |
919 | goto cleanup; | |
920 | ||
921 | if (expr->ts.u.cl) | |
922 | expr->ts.u.cl->length_from_typespec = 1; | |
923 | ||
924 | *result = expr; | |
e11449d1 FR |
925 | m = MATCH_YES; |
926 | goto done; | |
f6288c24 FR |
927 | |
928 | syntax: | |
e11449d1 | 929 | m = MATCH_ERROR; |
f6288c24 FR |
930 | gfc_error ("Syntax error in old style initializer list at %C"); |
931 | ||
932 | cleanup: | |
933 | if (expr) | |
934 | expr->value.constructor = NULL; | |
935 | gfc_free_expr (expr); | |
936 | gfc_constructor_free (array_head); | |
e11449d1 FR |
937 | |
938 | done: | |
f6288c24 | 939 | mpz_clear (repeat); |
e11449d1 FR |
940 | if (!scalar) |
941 | mpz_clear (as_size); | |
942 | return m; | |
f6288c24 FR |
943 | } |
944 | ||
945 | ||
eea58adb | 946 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 947 | |
524af0d6 | 948 | static bool |
d3a9eea2 TB |
949 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
950 | { | |
63fbf586 TB |
951 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
952 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
953 | { | |
954 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 955 | return false; |
63fbf586 | 956 | } |
c62c6622 | 957 | |
d3a9eea2 TB |
958 | if (to->rank == 0 && from->rank > 0) |
959 | { | |
960 | to->rank = from->rank; | |
961 | to->type = from->type; | |
962 | to->cray_pointee = from->cray_pointee; | |
963 | to->cp_was_assumed = from->cp_was_assumed; | |
964 | ||
15df0040 | 965 | for (int i = to->corank - 1; i >= 0; i--) |
d3a9eea2 | 966 | { |
93d1ab50 SK |
967 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
968 | cleans up elsewhere. */ | |
15df0040 | 969 | int j = from->rank + i; |
93d1ab50 SK |
970 | if (j >= GFC_MAX_DIMENSIONS) |
971 | break; | |
972 | ||
973 | to->lower[j] = to->lower[i]; | |
974 | to->upper[j] = to->upper[i]; | |
d3a9eea2 | 975 | } |
15df0040 | 976 | for (int i = 0; i < from->rank; i++) |
d3a9eea2 TB |
977 | { |
978 | if (copy) | |
979 | { | |
980 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
981 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
982 | } | |
983 | else | |
984 | { | |
985 | to->lower[i] = from->lower[i]; | |
986 | to->upper[i] = from->upper[i]; | |
987 | } | |
988 | } | |
989 | } | |
990 | else if (to->corank == 0 && from->corank > 0) | |
991 | { | |
992 | to->corank = from->corank; | |
993 | to->cotype = from->cotype; | |
994 | ||
15df0040 | 995 | for (int i = 0; i < from->corank; i++) |
d3a9eea2 | 996 | { |
93d1ab50 SK |
997 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
998 | cleans up elsewhere. */ | |
15df0040 TB |
999 | int k = from->rank + i; |
1000 | int j = to->rank + i; | |
93d1ab50 SK |
1001 | if (j >= GFC_MAX_DIMENSIONS) |
1002 | break; | |
1003 | ||
d3a9eea2 TB |
1004 | if (copy) |
1005 | { | |
15df0040 TB |
1006 | to->lower[j] = gfc_copy_expr (from->lower[k]); |
1007 | to->upper[j] = gfc_copy_expr (from->upper[k]); | |
d3a9eea2 TB |
1008 | } |
1009 | else | |
1010 | { | |
15df0040 TB |
1011 | to->lower[j] = from->lower[k]; |
1012 | to->upper[j] = from->upper[k]; | |
d3a9eea2 TB |
1013 | } |
1014 | } | |
1015 | } | |
63fbf586 | 1016 | |
299ab1b2 | 1017 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
93d1ab50 SK |
1018 | { |
1019 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
1020 | "allowed dimensions of %d", | |
1021 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
1022 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
1023 | return false; | |
1024 | } | |
524af0d6 | 1025 | return true; |
d3a9eea2 TB |
1026 | } |
1027 | ||
1028 | ||
6de9cd9a DN |
1029 | /* Match an intent specification. Since this can only happen after an |
1030 | INTENT word, a legal intent-spec must follow. */ | |
1031 | ||
1032 | static sym_intent | |
1033 | match_intent_spec (void) | |
1034 | { | |
1035 | ||
1036 | if (gfc_match (" ( in out )") == MATCH_YES) | |
1037 | return INTENT_INOUT; | |
1038 | if (gfc_match (" ( in )") == MATCH_YES) | |
1039 | return INTENT_IN; | |
1040 | if (gfc_match (" ( out )") == MATCH_YES) | |
1041 | return INTENT_OUT; | |
1042 | ||
1043 | gfc_error ("Bad INTENT specification at %C"); | |
1044 | return INTENT_UNKNOWN; | |
1045 | } | |
1046 | ||
1047 | ||
1048 | /* Matches a character length specification, which is either a | |
e69afb29 | 1049 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
1050 | |
1051 | static match | |
e69afb29 | 1052 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 1053 | { |
cba28dad JD |
1054 | match m; |
1055 | ||
e69afb29 SK |
1056 | *expr = NULL; |
1057 | *deferred = false; | |
1058 | ||
6de9cd9a | 1059 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
1060 | return MATCH_YES; |
1061 | ||
1062 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 1063 | { |
98a819ea | 1064 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
1065 | return MATCH_ERROR; |
1066 | ||
1067 | *deferred = true; | |
1068 | ||
6de9cd9a DN |
1069 | return MATCH_YES; |
1070 | } | |
1071 | ||
cba28dad | 1072 | m = gfc_match_expr (expr); |
f37e928c | 1073 | |
98a819ea SK |
1074 | if (m == MATCH_NO || m == MATCH_ERROR) |
1075 | return m; | |
1076 | ||
1077 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
1078 | return MATCH_ERROR; |
1079 | ||
98a819ea | 1080 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 1081 | { |
8d48826b SK |
1082 | if ((*expr)->ts.type == BT_INTEGER |
1083 | || ((*expr)->ts.type == BT_UNKNOWN | |
1084 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
1085 | return MATCH_YES; | |
1086 | ||
1087 | goto syntax; | |
1088 | } | |
1089 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
1090 | { | |
1091 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
1092 | processor dependent and its value is greater than or equal to zero. | |
1093 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
1094 | to a negative value, the length of character entities declared | |
1095 | is zero. */ | |
1096 | ||
1097 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 1098 | { |
8d48826b SK |
1099 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
1100 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 1101 | } |
8d48826b SK |
1102 | else |
1103 | goto syntax; | |
cba28dad | 1104 | } |
8d48826b SK |
1105 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1106 | goto syntax; | |
1107 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1108 | { | |
fb42421e | 1109 | bool t; |
8d48826b SK |
1110 | gfc_expr *e; |
1111 | ||
1112 | e = gfc_copy_expr (*expr); | |
1113 | ||
1114 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1115 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
1116 | if (e->ref && e->ref->type == REF_ARRAY |
1117 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
1118 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1119 | goto syntax; | |
1120 | ||
fb42421e SK |
1121 | t = gfc_reduce_init_expr (e); |
1122 | ||
8d987deb SK |
1123 | if (!t && e->ts.type == BT_UNKNOWN |
1124 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
1125 | && (flag_implicit_none |
1126 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 1127 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
1128 | { |
1129 | gfc_free_expr (e); | |
1130 | goto syntax; | |
1131 | } | |
98a819ea | 1132 | |
54b96a2d | 1133 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 1134 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
1135 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1136 | { | |
1137 | gfc_free_expr (e); | |
1138 | goto syntax; | |
1139 | } | |
1140 | ||
1141 | gfc_free_expr (e); | |
1142 | } | |
98a819ea | 1143 | |
cba28dad JD |
1144 | return m; |
1145 | ||
1146 | syntax: | |
8d48826b | 1147 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 1148 | return MATCH_ERROR; |
6de9cd9a DN |
1149 | } |
1150 | ||
1151 | ||
1152 | /* A character length is a '*' followed by a literal integer or a | |
1153 | char_len_param_value in parenthesis. */ | |
1154 | ||
1155 | static match | |
62732c30 | 1156 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 1157 | { |
5cf54585 | 1158 | int length; |
6de9cd9a DN |
1159 | match m; |
1160 | ||
f5acf0f2 | 1161 | *deferred = false; |
6de9cd9a DN |
1162 | m = gfc_match_char ('*'); |
1163 | if (m != MATCH_YES) | |
1164 | return m; | |
1165 | ||
5cf54585 | 1166 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1167 | if (m == MATCH_ERROR) |
1168 | return m; | |
1169 | ||
1170 | if (m == MATCH_YES) | |
1171 | { | |
62732c30 | 1172 | if (obsolescent_check |
524af0d6 | 1173 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1174 | return MATCH_ERROR; |
f622221a | 1175 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1176 | return m; |
1177 | } | |
1178 | ||
1179 | if (gfc_match_char ('(') == MATCH_NO) | |
1180 | goto syntax; | |
1181 | ||
e69afb29 | 1182 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1183 | if (m != MATCH_YES && gfc_matching_function) |
1184 | { | |
1185 | gfc_undo_symbols (); | |
1186 | m = MATCH_YES; | |
1187 | } | |
1188 | ||
6de9cd9a DN |
1189 | if (m == MATCH_ERROR) |
1190 | return m; | |
1191 | if (m == MATCH_NO) | |
1192 | goto syntax; | |
1193 | ||
1194 | if (gfc_match_char (')') == MATCH_NO) | |
1195 | { | |
1196 | gfc_free_expr (*expr); | |
1197 | *expr = NULL; | |
1198 | goto syntax; | |
1199 | } | |
1200 | ||
1201 | return MATCH_YES; | |
1202 | ||
1203 | syntax: | |
1204 | gfc_error ("Syntax error in character length specification at %C"); | |
1205 | return MATCH_ERROR; | |
1206 | } | |
1207 | ||
1208 | ||
9e35b386 EE |
1209 | /* Special subroutine for finding a symbol. Check if the name is found |
1210 | in the current name space. If not, and we're compiling a function or | |
1211 | subroutine and the parent compilation unit is an interface, then check | |
1212 | to see if the name we've been given is the name of the interface | |
1213 | (located in another namespace). */ | |
6de9cd9a DN |
1214 | |
1215 | static int | |
08a6b8e0 | 1216 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1217 | { |
1218 | gfc_state_data *s; | |
08a6b8e0 | 1219 | gfc_symtree *st; |
9e35b386 | 1220 | int i; |
6de9cd9a | 1221 | |
08a6b8e0 | 1222 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1223 | if (i == 0) |
08a6b8e0 TB |
1224 | { |
1225 | *result = st ? st->n.sym : NULL; | |
1226 | goto end; | |
1227 | } | |
d51347f9 | 1228 | |
6de9cd9a DN |
1229 | if (gfc_current_state () != COMP_SUBROUTINE |
1230 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1231 | goto end; |
6de9cd9a DN |
1232 | |
1233 | s = gfc_state_stack->previous; | |
1234 | if (s == NULL) | |
9e35b386 | 1235 | goto end; |
6de9cd9a DN |
1236 | |
1237 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1238 | goto end; |
6de9cd9a | 1239 | if (s->sym == NULL) |
66e4ab31 | 1240 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1241 | |
1242 | if (strcmp (name, s->sym->name) == 0) | |
1243 | { | |
1244 | *result = s->sym; | |
1245 | return 0; | |
1246 | } | |
1247 | ||
9e35b386 EE |
1248 | end: |
1249 | return i; | |
6de9cd9a DN |
1250 | } |
1251 | ||
1252 | ||
1253 | /* Special subroutine for getting a symbol node associated with a | |
1254 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1255 | symbol is created in the parent using with symtree node in the | |
1256 | child unit pointing to the symbol. If the current namespace has no | |
1257 | parent, then the symbol is just created in the current unit. */ | |
1258 | ||
1259 | static int | |
636dff67 | 1260 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1261 | { |
1262 | gfc_symtree *st; | |
1263 | gfc_symbol *sym; | |
a7ca4d8d | 1264 | int rc = 0; |
6de9cd9a | 1265 | |
1a492601 PT |
1266 | /* Module functions have to be left in their own namespace because |
1267 | they have potentially (almost certainly!) already been referenced. | |
1268 | In this sense, they are rather like external functions. This is | |
1269 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1270 | space is set to point to the master function, so that the fake | |
1271 | result mechanism can work. */ | |
1272 | if (module_fcn_entry) | |
6c12686b PT |
1273 | { |
1274 | /* Present if entry is declared to be a module procedure. */ | |
1275 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1276 | |
6c12686b PT |
1277 | if (*result == NULL) |
1278 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1279 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1280 | && (*result)->ts.type == BT_UNKNOWN |
1281 | && sym->attr.flavor == FL_UNKNOWN) | |
1282 | /* Pick up the typespec for the entry, if declared in the function | |
1283 | body. Note that this symbol is FL_UNKNOWN because it will | |
1284 | only have appeared in a type declaration. The local symtree | |
1285 | is set to point to the module symbol and a unique symtree | |
1286 | to the local version. This latter ensures a correct clearing | |
1287 | of the symbols. */ | |
2e32a71e PT |
1288 | { |
1289 | /* If the ENTRY proceeds its specification, we need to ensure | |
1290 | that this does not raise a "has no IMPLICIT type" error. */ | |
1291 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1292 | sym->attr.untyped = 1; |
2e32a71e | 1293 | |
0e5a218b | 1294 | (*result)->ts = sym->ts; |
2e32a71e PT |
1295 | |
1296 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1297 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1298 | can be applied. */ |
1299 | (*result)->ns = gfc_current_ns; | |
1300 | ||
1301 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1302 | st->n.sym = *result; | |
1303 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1304 | sym->refs++; |
2e32a71e PT |
1305 | st->n.sym = sym; |
1306 | } | |
6c12686b | 1307 | } |
68ea355b PT |
1308 | else |
1309 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1310 | |
a7ca4d8d PT |
1311 | if (rc) |
1312 | return rc; | |
1313 | ||
68ea355b | 1314 | sym = *result; |
79124116 PT |
1315 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1316 | return rc; | |
6de9cd9a | 1317 | |
96c8b253 | 1318 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4668d6f9 PT |
1319 | { |
1320 | /* Create a partially populated interface symbol to carry the | |
1321 | characteristics of the procedure and the result. */ | |
c064374d | 1322 | sym->tlink = gfc_new_symbol (name, sym->ns); |
96c8b253 | 1323 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
c064374d | 1324 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1325 | if (sym->attr.dimension) |
c064374d | 1326 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1327 | |
1328 | /* Ideally, at this point, a copy would be made of the formal | |
1329 | arguments and their namespace. However, this does not appear | |
1330 | to be necessary, albeit at the expense of not being able to | |
1331 | use gfc_compare_interfaces directly. */ | |
1332 | ||
1333 | if (sym->result && sym->result != sym) | |
1334 | { | |
c064374d | 1335 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1336 | sym->result = NULL; |
1337 | } | |
1338 | else if (sym->result) | |
1339 | { | |
c064374d | 1340 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1341 | } |
1342 | } | |
1343 | else if (sym && !sym->gfc_new | |
1344 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1345 | { |
cda7004b PT |
1346 | /* Trap another encompassed procedure with the same name. All |
1347 | these conditions are necessary to avoid picking up an entry | |
1348 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1349 | this is handled using gsymbols to register unique, globally |
cda7004b | 1350 | accessible names. */ |
68ea355b | 1351 | if (sym->attr.flavor != 0 |
636dff67 | 1352 | && sym->attr.proc != 0 |
64300da7 | 1353 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
636dff67 | 1354 | && sym->attr.if_source != IFSRC_UNKNOWN) |
b4439561 TB |
1355 | { |
1356 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1357 | name, &sym->declared_at); | |
1358 | return true; | |
1359 | } | |
64300da7 SK |
1360 | if (sym->attr.flavor != 0 |
1361 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
b4439561 TB |
1362 | { |
1363 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1364 | name, &sym->declared_at); | |
1365 | return true; | |
1366 | } | |
64300da7 | 1367 | |
81ea7c11 SK |
1368 | if (sym->attr.external && sym->attr.procedure |
1369 | && gfc_current_state () == COMP_CONTAINS) | |
b4439561 TB |
1370 | { |
1371 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1372 | "procedure defined at %L", | |
1373 | name, &sym->declared_at); | |
1374 | return true; | |
1375 | } | |
81ea7c11 | 1376 | |
fd3e70af JD |
1377 | /* Trap a procedure with a name the same as interface in the |
1378 | encompassing scope. */ | |
1379 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1380 | && (sym->attr.subroutine || sym->attr.function) |
1381 | && !sym->attr.mod_proc) | |
b4439561 TB |
1382 | { |
1383 | gfc_error_now ("Name %qs at %C is already defined" | |
1384 | " as a generic interface at %L", | |
1385 | name, &sym->declared_at); | |
1386 | return true; | |
1387 | } | |
fd3e70af | 1388 | |
68ea355b | 1389 | /* Trap declarations of attributes in encompassing scope. The |
1c3925e3 SK |
1390 | signature for this is that ts.kind is nonzero for no-CLASS |
1391 | entity. For a CLASS entity, ts.kind is zero. */ | |
1392 | if ((sym->ts.kind != 0 || sym->ts.type == BT_CLASS) | |
636dff67 SK |
1393 | && !sym->attr.implicit_type |
1394 | && sym->attr.proc == 0 | |
1395 | && gfc_current_ns->parent != NULL | |
1396 | && sym->attr.access == 0 | |
1397 | && !module_fcn_entry) | |
b4439561 TB |
1398 | { |
1399 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
96c8b253 | 1400 | "from a previous declaration", name); |
b4439561 TB |
1401 | return true; |
1402 | } | |
96c8b253 SK |
1403 | } |
1404 | ||
b74fa126 SK |
1405 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1406 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1407 | body that is declared in the scoping unit of a module or submodule. */ | |
1408 | if (sym->attr.external | |
1409 | && (sym->attr.subroutine || sym->attr.function) | |
1410 | && sym->attr.if_source == IFSRC_IFBODY | |
1411 | && !current_attr.module_procedure | |
1412 | && sym->attr.proc == PROC_MODULE | |
1413 | && gfc_state_stack->state == COMP_CONTAINS) | |
b4439561 TB |
1414 | { |
1415 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1416 | "clashes with internal procedure defined at %C", | |
1417 | name, &sym->declared_at); | |
1418 | return true; | |
1419 | } | |
b74fa126 SK |
1420 | |
1421 | if (sym && !sym->gfc_new | |
1422 | && sym->attr.flavor != FL_UNKNOWN | |
1423 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1424 | && gfc_state_stack->state == COMP_CONTAINS | |
1425 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
b4439561 TB |
1426 | { |
1427 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1428 | name, &sym->declared_at); | |
1429 | return true; | |
1430 | } | |
68ea355b PT |
1431 | |
1432 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1433 | return rc; | |
6de9cd9a | 1434 | |
1a492601 PT |
1435 | /* Module function entries will already have a symtree in |
1436 | the current namespace but will need one at module level. */ | |
1437 | if (module_fcn_entry) | |
6c12686b PT |
1438 | { |
1439 | /* Present if entry is declared to be a module procedure. */ | |
1440 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1441 | if (st == NULL) | |
1442 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1443 | } | |
1a492601 PT |
1444 | else |
1445 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1446 | |
6de9cd9a DN |
1447 | st->n.sym = sym; |
1448 | sym->refs++; | |
1449 | ||
66e4ab31 | 1450 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1451 | |
1a492601 | 1452 | if (((sym->ns->proc_name != NULL |
96c8b253 SK |
1453 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1454 | && sym->attr.proc != PROC_MODULE) | |
1455 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1456 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
6de9cd9a DN |
1457 | rc = 2; |
1458 | ||
1459 | return rc; | |
1460 | } | |
1461 | ||
1462 | ||
a8b3b0b6 CR |
1463 | /* Verify that the given symbol representing a parameter is C |
1464 | interoperable, by checking to see if it was marked as such after | |
1465 | its declaration. If the given symbol is not interoperable, a | |
1466 | warning is reported, thus removing the need to return the status to | |
1467 | the calling function. The standard does not require the user use | |
1468 | one of the iso_c_binding named constants to declare an | |
1469 | interoperable parameter, but we can't be sure if the param is C | |
1470 | interop or not if the user doesn't. For example, integer(4) may be | |
1471 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1472 | a number of the C types, which causes a problem because the | |
1473 | compiler can't know which one. This code is almost certainly not | |
1474 | portable, and the user will get what they deserve if the C type | |
1475 | across platforms isn't always interoperable with integer(4). If | |
1476 | the user had used something like integer(c_int) or integer(c_long), | |
1477 | the compiler could have automatically handled the varying sizes | |
1478 | across platforms. */ | |
1479 | ||
524af0d6 | 1480 | bool |
00820a2a | 1481 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1482 | { |
1483 | int is_c_interop = 0; | |
524af0d6 | 1484 | bool retval = true; |
a8b3b0b6 CR |
1485 | |
1486 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1487 | Don't repeat the checks here. */ | |
1488 | if (sym->attr.implicit_type) | |
524af0d6 | 1489 | return true; |
f5acf0f2 | 1490 | |
a8b3b0b6 CR |
1491 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1492 | they're interoperable if they're BIND(C) and their params are all | |
1493 | interoperable. */ | |
1494 | if (sym->attr.flavor == FL_PROCEDURE) | |
1495 | { | |
1496 | if (sym->attr.is_bind_c == 0) | |
1497 | { | |
4daa149b TB |
1498 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1499 | "attribute to be C interoperable", sym->name, | |
1500 | &(sym->declared_at)); | |
524af0d6 | 1501 | return false; |
a8b3b0b6 CR |
1502 | } |
1503 | else | |
1504 | { | |
1505 | if (sym->attr.is_c_interop == 1) | |
1506 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1507 | return true; |
a8b3b0b6 CR |
1508 | else |
1509 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1510 | sym->common_block); | |
1511 | } | |
1512 | } | |
f5acf0f2 | 1513 | |
a8b3b0b6 CR |
1514 | /* See if we've stored a reference to a procedure that owns sym. */ |
1515 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1516 | { | |
1517 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1518 | { | |
524af0d6 | 1519 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1520 | |
1521 | if (is_c_interop != 1) | |
1522 | { | |
1523 | /* Make personalized messages to give better feedback. */ | |
1524 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1525 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1526 | "BIND(C) procedure %qs but is not C interoperable " | |
1527 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1528 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1529 | sym->ns->proc_name->name, |
bc21d315 | 1530 | sym->ts.u.derived->name); |
00820a2a | 1531 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1532 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1533 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1534 | "because it is polymorphic", |
1535 | sym->name, &(sym->declared_at), | |
1536 | sym->ns->proc_name->name); | |
4daa149b | 1537 | else if (warn_c_binding_type) |
48749dbc MLI |
1538 | gfc_warning (OPT_Wc_binding_type, |
1539 | "Variable %qs at %L is a dummy argument of the " | |
1540 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1541 | "interoperable", |
1542 | sym->name, &(sym->declared_at), | |
1543 | sym->ns->proc_name->name); | |
1544 | } | |
aa5e22f0 CR |
1545 | |
1546 | /* Character strings are only C interoperable if they have a | |
1547 | length of 1. */ | |
0a524296 | 1548 | if (sym->ts.type == BT_CHARACTER && !sym->attr.dimension) |
aa5e22f0 | 1549 | { |
bc21d315 | 1550 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1551 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1552 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1553 | { | |
0a524296 PT |
1554 | gfc_error ("Character argument %qs at %L " |
1555 | "must be length 1 because " | |
1556 | "procedure %qs is BIND(C)", | |
1557 | sym->name, &sym->declared_at, | |
1558 | sym->ns->proc_name->name); | |
1559 | retval = false; | |
aa5e22f0 CR |
1560 | } |
1561 | } | |
1562 | ||
a8b3b0b6 CR |
1563 | /* We have to make sure that any param to a bind(c) routine does |
1564 | not have the allocatable, pointer, or optional attributes, | |
1565 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1566 | if (sym->attr.allocatable == 1 |
286f737c | 1567 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1568 | "ALLOCATABLE attribute in procedure %qs " |
60f6ca95 TB |
1569 | "with BIND(C)", sym->name, |
1570 | &(sym->declared_at), | |
1571 | sym->ns->proc_name->name)) | |
1572 | retval = false; | |
1573 | ||
1574 | if (sym->attr.pointer == 1 | |
286f737c | 1575 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1576 | "POINTER attribute in procedure %qs " |
60f6ca95 TB |
1577 | "with BIND(C)", sym->name, |
1578 | &(sym->declared_at), | |
1579 | sym->ns->proc_name->name)) | |
1580 | retval = false; | |
1581 | ||
2e8d9212 | 1582 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1583 | { |
c4100eae MLI |
1584 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1585 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1586 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1587 | sym->ns->proc_name->name); |
524af0d6 | 1588 | retval = false; |
a8b3b0b6 | 1589 | } |
2e8d9212 | 1590 | else if (sym->attr.optional == 1 |
286f737c | 1591 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
524af0d6 | 1592 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1593 | "procedure %qs which is BIND(C)", |
1594 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1595 | sym->ns->proc_name->name)) |
1596 | retval = false; | |
a8b3b0b6 CR |
1597 | |
1598 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1599 | either assumed size or explicit shape. Deferred shape is already |
1600 | covered by the pointer/allocatable attribute. */ | |
1601 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
286f737c | 1602 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
524af0d6 | 1603 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1604 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1605 | &(sym->declared_at), |
1606 | sym->ns->proc_name->name, | |
524af0d6 JB |
1607 | &(sym->ns->proc_name->declared_at))) |
1608 | retval = false; | |
a8b3b0b6 CR |
1609 | } |
1610 | } | |
1611 | ||
1612 | return retval; | |
1613 | } | |
1614 | ||
1615 | ||
cf2b3c22 | 1616 | |
a8b3b0b6 | 1617 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1618 | |
524af0d6 | 1619 | static bool |
e69afb29 | 1620 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1621 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1622 | { |
1623 | symbol_attribute attr; | |
1624 | gfc_symbol *sym; | |
1e6025b6 | 1625 | int upper; |
bedee914 PT |
1626 | gfc_symtree *st; |
1627 | ||
1628 | /* Symbols in a submodule are host associated from the parent module or | |
1629 | submodules. Therefore, they can be overridden by declarations in the | |
1630 | submodule scope. Deal with this by attaching the existing symbol to | |
1631 | a new symtree and recycling the old symtree with a new symbol... */ | |
1632 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1633 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1634 | && st->n.sym != NULL | |
1635 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1636 | { | |
1637 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1638 | s->n.sym = st->n.sym; | |
1639 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1640 | |
bedee914 PT |
1641 | |
1642 | st->n.sym = sym; | |
1643 | sym->refs++; | |
1644 | gfc_set_sym_referenced (sym); | |
1645 | } | |
1646 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1647 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1648 | return false; |
6de9cd9a | 1649 | |
1e6025b6 TK |
1650 | /* Check if the name has already been defined as a type. The |
1651 | first letter of the symtree will be in upper case then. Of | |
1652 | course, this is only necessary if the upper case letter is | |
1653 | actually different. */ | |
1654 | ||
1655 | upper = TOUPPER(name[0]); | |
1656 | if (upper != name[0]) | |
1657 | { | |
1658 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1659 | gfc_symtree *st; | |
1e6025b6 | 1660 | |
025d57f0 MS |
1661 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1662 | strcpy (u_name, name); | |
1e6025b6 TK |
1663 | u_name[0] = upper; |
1664 | ||
1665 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1666 | ||
f6288c24 FR |
1667 | /* STRUCTURE types can alias symbol names */ |
1668 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1669 | { |
1670 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1671 | &st->n.sym->declared_at); | |
1672 | return false; | |
1673 | } | |
1674 | } | |
1675 | ||
66e4ab31 | 1676 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1677 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1678 | && (sym->attr.implicit_type == 0 |
1679 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1680 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1681 | return false; | |
6de9cd9a DN |
1682 | |
1683 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1684 | { |
1685 | sym->ts.u.cl = cl; | |
1686 | sym->ts.deferred = cl_deferred; | |
1687 | } | |
6de9cd9a DN |
1688 | |
1689 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1690 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1691 | return false; | |
6de9cd9a DN |
1692 | *as = NULL; |
1693 | ||
1694 | /* Add attribute to symbol. The copy is so that we can reset the | |
1695 | dimension attribute. */ | |
1696 | attr = current_attr; | |
1697 | attr.dimension = 0; | |
be59db2d | 1698 | attr.codimension = 0; |
6de9cd9a | 1699 | |
524af0d6 JB |
1700 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1701 | return false; | |
6de9cd9a | 1702 | |
a8b3b0b6 CR |
1703 | /* Finish any work that may need to be done for the binding label, |
1704 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1705 | is made, and before the symbol name (for data decls), so the | |
1706 | current_ts is holding the binding label, or nothing if the | |
1707 | name= attr wasn't given. Therefore, test here if we're dealing | |
1708 | with a bind(c) and make sure the binding label is set correctly. */ | |
1709 | if (sym->attr.is_bind_c == 1) | |
1710 | { | |
62603fae | 1711 | if (!sym->binding_label) |
a8b3b0b6 | 1712 | { |
ad4a2f64 TB |
1713 | /* Set the binding label and verify that if a NAME= was specified |
1714 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1715 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1716 | num_idents_on_line)) |
1717 | return false; | |
a8b3b0b6 CR |
1718 | } |
1719 | } | |
1720 | ||
1721 | /* See if we know we're in a common block, and if it's a bind(c) | |
1722 | common then we need to make sure we're an interoperable type. */ | |
1723 | if (sym->attr.in_common == 1) | |
1724 | { | |
1725 | /* Test the common block object. */ | |
1726 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1727 | && sym->ts.is_c_interop != 1) | |
1728 | { | |
4daa149b | 1729 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1730 | "must be declared with a C interoperable " |
4daa149b | 1731 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1732 | sym->name, sym->common_block->name, |
1733 | sym->common_block->name); | |
1734 | gfc_clear_error (); | |
1735 | } | |
1736 | } | |
1737 | ||
9a3db5a3 PT |
1738 | sym->attr.implied_index = 0; |
1739 | ||
5bab4c96 PT |
1740 | /* Use the parameter expressions for a parameterized derived type. */ |
1741 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1742 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1743 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1744 | ||
528622fd | 1745 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1746 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1747 | |
524af0d6 | 1748 | return true; |
6de9cd9a DN |
1749 | } |
1750 | ||
636dff67 | 1751 | |
df7cc9b5 | 1752 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1753 | truncated. If we're inside an array constructor without a typespec, we |
1754 | additionally check that all elements have the same length; check_len -1 | |
1755 | means no checking. */ | |
df7cc9b5 FW |
1756 | |
1757 | void | |
6b271a2e JB |
1758 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1759 | gfc_charlen_t check_len) | |
df7cc9b5 | 1760 | { |
00660189 | 1761 | gfc_char_t *s; |
6b271a2e | 1762 | gfc_charlen_t slen; |
df7cc9b5 | 1763 | |
834e9dbb SK |
1764 | if (expr->ts.type != BT_CHARACTER) |
1765 | return; | |
63af1586 | 1766 | |
b441ae1d SK |
1767 | if (expr->expr_type != EXPR_CONSTANT) |
1768 | { | |
1769 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1770 | return; | |
1771 | } | |
df7cc9b5 FW |
1772 | |
1773 | slen = expr->value.character.length; | |
1774 | if (len != slen) | |
1775 | { | |
00660189 FXC |
1776 | s = gfc_get_wide_string (len + 1); |
1777 | memcpy (s, expr->value.character.string, | |
1778 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1779 | if (len > slen) |
00660189 | 1780 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1781 | |
a96c39ea | 1782 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1783 | gfc_warning_now (OPT_Wcharacter_truncation, |
1784 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1785 | "(%ld/%ld)", &expr->where, |
1786 | (long) slen, (long) len); | |
2220652d PT |
1787 | |
1788 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1789 | initializers. */ | |
d2848082 DK |
1790 | if (check_len != -1 && slen != check_len |
1791 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1792 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1793 | "at %L must have the same length (%ld/%ld)", |
1794 | &expr->where, (long) slen, | |
1795 | (long) check_len); | |
2220652d | 1796 | |
150675a8 | 1797 | s[len] = '\0'; |
cede9502 | 1798 | free (expr->value.character.string); |
df7cc9b5 FW |
1799 | expr->value.character.string = s; |
1800 | expr->value.character.length = len; | |
e6ca33ba HA |
1801 | /* If explicit representation was given, clear it |
1802 | as it is no longer needed after padding. */ | |
1803 | if (expr->representation.length) | |
1804 | { | |
1805 | expr->representation.length = 0; | |
1806 | free (expr->representation.string); | |
1807 | expr->representation.string = NULL; | |
1808 | } | |
df7cc9b5 FW |
1809 | } |
1810 | } | |
6de9cd9a | 1811 | |
25d8f0a2 | 1812 | |
d51347f9 | 1813 | /* Function to create and update the enumerator history |
25d8f0a2 | 1814 | using the information passed as arguments. |
d51347f9 TB |
1815 | Pointer "max_enum" is also updated, to point to |
1816 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1817 | |
1818 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1819 | INIT points to its enumerator value. */ |
25d8f0a2 | 1820 | |
d51347f9 | 1821 | static void |
636dff67 | 1822 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1823 | { |
1824 | enumerator_history *new_enum_history; | |
1825 | gcc_assert (sym != NULL && init != NULL); | |
1826 | ||
ece3f663 | 1827 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1828 | |
1829 | new_enum_history->sym = sym; | |
1830 | new_enum_history->initializer = init; | |
1831 | new_enum_history->next = NULL; | |
1832 | ||
1833 | if (enum_history == NULL) | |
1834 | { | |
1835 | enum_history = new_enum_history; | |
1836 | max_enum = enum_history; | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | new_enum_history->next = enum_history; | |
1841 | enum_history = new_enum_history; | |
1842 | ||
d51347f9 | 1843 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1844 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1845 | max_enum = new_enum_history; |
25d8f0a2 TS |
1846 | } |
1847 | } | |
1848 | ||
1849 | ||
d51347f9 | 1850 | /* Function to free enum kind history. */ |
25d8f0a2 | 1851 | |
d51347f9 | 1852 | void |
636dff67 | 1853 | gfc_free_enum_history (void) |
25d8f0a2 | 1854 | { |
d51347f9 TB |
1855 | enumerator_history *current = enum_history; |
1856 | enumerator_history *next; | |
25d8f0a2 TS |
1857 | |
1858 | while (current != NULL) | |
1859 | { | |
1860 | next = current->next; | |
cede9502 | 1861 | free (current); |
25d8f0a2 TS |
1862 | current = next; |
1863 | } | |
1864 | max_enum = NULL; | |
1865 | enum_history = NULL; | |
1866 | } | |
1867 | ||
1868 | ||
6de9cd9a DN |
1869 | /* Function called by variable_decl() that adds an initialization |
1870 | expression to a symbol. */ | |
1871 | ||
524af0d6 | 1872 | static bool |
66e4ab31 | 1873 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1874 | { |
1875 | symbol_attribute attr; | |
1876 | gfc_symbol *sym; | |
1877 | gfc_expr *init; | |
1878 | ||
1879 | init = *initp; | |
08a6b8e0 | 1880 | if (find_special (name, &sym, false)) |
524af0d6 | 1881 | return false; |
6de9cd9a DN |
1882 | |
1883 | attr = sym->attr; | |
1884 | ||
1885 | /* If this symbol is confirming an implicit parameter type, | |
1886 | then an initialization expression is not allowed. */ | |
1887 | if (attr.flavor == FL_PARAMETER | |
1888 | && sym->value != NULL | |
1889 | && *initp != NULL) | |
1890 | { | |
c4100eae | 1891 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1892 | sym->name); |
524af0d6 | 1893 | return false; |
6de9cd9a DN |
1894 | } |
1895 | ||
1896 | if (init == NULL) | |
1897 | { | |
1898 | /* An initializer is required for PARAMETER declarations. */ | |
1899 | if (attr.flavor == FL_PARAMETER) | |
1900 | { | |
1901 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1902 | return false; |
6de9cd9a DN |
1903 | } |
1904 | } | |
1905 | else | |
1906 | { | |
1907 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1908 | initializer. */ |
6de9cd9a DN |
1909 | if (sym->attr.data) |
1910 | { | |
c4100eae | 1911 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1912 | "appears in a DATA statement", sym->name); |
524af0d6 | 1913 | return false; |
6de9cd9a DN |
1914 | } |
1915 | ||
75d17889 | 1916 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1917 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1918 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1919 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1920 | && !sym->attr.proc_pointer |
524af0d6 JB |
1921 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1922 | return false; | |
6de9cd9a | 1923 | |
bc21d315 | 1924 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1925 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1926 | { |
1927 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1928 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1929 | return false; | |
51b128a0 | 1930 | |
bc21d315 | 1931 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1932 | { |
f622221a | 1933 | gfc_charlen_t clen; |
66e4ab31 SK |
1934 | /* If there are multiple CHARACTER variables declared on the |
1935 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1936 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1937 | |
a99288e5 PT |
1938 | if (sym->attr.flavor == FL_PARAMETER) |
1939 | { | |
1940 | if (init->expr_type == EXPR_CONSTANT) | |
1941 | { | |
1942 | clen = init->value.character.length; | |
b7e75771 | 1943 | sym->ts.u.cl->length |
f622221a | 1944 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1945 | NULL, clen); |
a99288e5 PT |
1946 | } |
1947 | else if (init->expr_type == EXPR_ARRAY) | |
1948 | { | |
c004a341 | 1949 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1950 | { |
1951 | const gfc_expr *length = init->ts.u.cl->length; | |
1952 | if (length->expr_type != EXPR_CONSTANT) | |
1953 | { | |
1954 | gfc_error ("Cannot initialize parameter array " | |
1955 | "at %L " | |
1956 | "with variable length elements", | |
1957 | &sym->declared_at); | |
1958 | return false; | |
1959 | } | |
1960 | clen = mpz_get_si (length->value.integer); | |
1961 | } | |
dc0f176a SK |
1962 | else if (init->value.constructor) |
1963 | { | |
1964 | gfc_constructor *c; | |
70112e2a | 1965 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1966 | clen = c->expr->value.character.length; |
1967 | } | |
1968 | else | |
1969 | gcc_unreachable (); | |
b7e75771 | 1970 | sym->ts.u.cl->length |
f622221a | 1971 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1972 | NULL, clen); |
a99288e5 | 1973 | } |
bc21d315 JW |
1974 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1975 | sym->ts.u.cl->length = | |
bc1efcb7 | 1976 | gfc_copy_expr (init->ts.u.cl->length); |
a99288e5 | 1977 | } |
df7cc9b5 FW |
1978 | } |
1979 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1980 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1981 | { |
d30ecc9c SK |
1982 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1983 | return false; | |
1984 | ||
aeb8c028 JJ |
1985 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1986 | false); | |
1987 | /* resolve_charlen will complain later on if the length | |
1988 | is too large. Just skeep the initialization in that case. */ | |
1989 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1990 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1991 | { |
aeb8c028 JJ |
1992 | HOST_WIDE_INT len |
1993 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1994 | ||
1995 | if (init->expr_type == EXPR_CONSTANT) | |
1996 | gfc_set_constant_character_len (len, init, -1); | |
1997 | else if (init->expr_type == EXPR_ARRAY) | |
1998 | { | |
1999 | gfc_constructor *c; | |
b7e75771 | 2000 | |
aeb8c028 JJ |
2001 | /* Build a new charlen to prevent simplification from |
2002 | deleting the length before it is resolved. */ | |
2003 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
2004 | init->ts.u.cl->length | |
2005 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 2006 | |
aeb8c028 JJ |
2007 | for (c = gfc_constructor_first (init->value.constructor); |
2008 | c; c = gfc_constructor_next (c)) | |
2009 | gfc_set_constant_character_len (len, c->expr, -1); | |
2010 | } | |
df7cc9b5 FW |
2011 | } |
2012 | } | |
2013 | } | |
2014 | ||
f5ca06e6 DK |
2015 | /* If sym is implied-shape, set its upper bounds from init. */ |
2016 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
2017 | && sym->as->type == AS_IMPLIED_SHAPE) | |
2018 | { | |
2019 | int dim; | |
2020 | ||
2021 | if (init->rank == 0) | |
2022 | { | |
1fe61adf | 2023 | gfc_error ("Cannot initialize implied-shape array at %L" |
f5ca06e6 | 2024 | " with scalar", &sym->declared_at); |
524af0d6 | 2025 | return false; |
f5ca06e6 | 2026 | } |
f5ca06e6 | 2027 | |
8ed5ae52 TK |
2028 | /* The shape may be NULL for EXPR_ARRAY, set it. */ |
2029 | if (init->shape == NULL) | |
2030 | { | |
2031 | gcc_assert (init->expr_type == EXPR_ARRAY); | |
2032 | init->shape = gfc_get_shape (1); | |
2033 | if (!gfc_array_size (init, &init->shape[0])) | |
2034 | gfc_internal_error ("gfc_array_size failed"); | |
2035 | } | |
f5ca06e6 DK |
2036 | |
2037 | for (dim = 0; dim < sym->as->rank; ++dim) | |
2038 | { | |
2039 | int k; | |
cdffe788 | 2040 | gfc_expr *e, *lower; |
f5acf0f2 | 2041 | |
f5ca06e6 | 2042 | lower = sym->as->lower[dim]; |
cdffe788 | 2043 | |
70112e2a | 2044 | /* If the lower bound is an array element from another |
cdffe788 SK |
2045 | parameterized array, then it is marked with EXPR_VARIABLE and |
2046 | is an initialization expression. Try to reduce it. */ | |
2047 | if (lower->expr_type == EXPR_VARIABLE) | |
2048 | gfc_reduce_init_expr (lower); | |
2049 | ||
2050 | if (lower->expr_type == EXPR_CONSTANT) | |
2051 | { | |
2052 | /* All dimensions must be without upper bound. */ | |
2053 | gcc_assert (!sym->as->upper[dim]); | |
2054 | ||
2055 | k = lower->ts.kind; | |
2056 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
2057 | mpz_add (e->value.integer, lower->value.integer, | |
2058 | init->shape[dim]); | |
2059 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
2060 | sym->as->upper[dim] = e; | |
2061 | } | |
2062 | else | |
f5ca06e6 DK |
2063 | { |
2064 | gfc_error ("Non-constant lower bound in implied-shape" | |
2065 | " declaration at %L", &lower->where); | |
524af0d6 | 2066 | return false; |
f5ca06e6 | 2067 | } |
f5ca06e6 DK |
2068 | } |
2069 | ||
2070 | sym->as->type = AS_EXPLICIT; | |
2071 | } | |
2072 | ||
a8b3b0b6 CR |
2073 | /* Need to check if the expression we initialized this |
2074 | to was one of the iso_c_binding named constants. If so, | |
2075 | and we're a parameter (constant), let it be iso_c. | |
2076 | For example: | |
2077 | integer(c_int), parameter :: my_int = c_int | |
2078 | integer(my_int) :: my_int_2 | |
2079 | If we mark my_int as iso_c (since we can see it's value | |
2080 | is equal to one of the named constants), then my_int_2 | |
2081 | will be considered C interoperable. */ | |
f6288c24 | 2082 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
2083 | { |
2084 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2085 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2086 | /* attr bits needed for module files. */ | |
2087 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2088 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2089 | if (init->ts.is_iso_c) | |
2090 | sym->ts.f90_type = init->ts.f90_type; | |
2091 | } | |
b7e75771 | 2092 | |
6de9cd9a DN |
2093 | /* Add initializer. Make sure we keep the ranks sane. */ |
2094 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
2095 | { |
2096 | mpz_t size; | |
2097 | gfc_expr *array; | |
a9b43781 PT |
2098 | int n; |
2099 | if (sym->attr.flavor == FL_PARAMETER | |
2100 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 2101 | && spec_size (sym->as, &size) |
a9b43781 PT |
2102 | && mpz_cmp_si (size, 0) > 0) |
2103 | { | |
b7e75771 JD |
2104 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2105 | &init->where); | |
a9b43781 | 2106 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
2107 | gfc_constructor_append_expr (&array->value.constructor, |
2108 | n == 0 | |
2109 | ? init | |
2110 | : gfc_copy_expr (init), | |
2111 | &init->where); | |
f5acf0f2 | 2112 | |
a9b43781 PT |
2113 | array->shape = gfc_get_shape (sym->as->rank); |
2114 | for (n = 0; n < sym->as->rank; n++) | |
2115 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2116 | ||
2117 | init = array; | |
2118 | mpz_clear (size); | |
2119 | } | |
2120 | init->rank = sym->as->rank; | |
2121 | } | |
6de9cd9a DN |
2122 | |
2123 | sym->value = init; | |
ef7236d2 DF |
2124 | if (sym->attr.save == SAVE_NONE) |
2125 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2126 | *initp = NULL; |
2127 | } | |
2128 | ||
524af0d6 | 2129 | return true; |
6de9cd9a DN |
2130 | } |
2131 | ||
2132 | ||
2133 | /* Function called by variable_decl() that adds a name to a structure | |
2134 | being built. */ | |
2135 | ||
524af0d6 | 2136 | static bool |
636dff67 SK |
2137 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2138 | gfc_array_spec **as) | |
6de9cd9a | 2139 | { |
f6288c24 | 2140 | gfc_state_data *s; |
6de9cd9a DN |
2141 | gfc_component *c; |
2142 | ||
619dd721 | 2143 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 2144 | constructing, it must have the pointer attribute. */ |
619dd721 | 2145 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 2146 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
2147 | && current_attr.pointer == 0) |
2148 | { | |
bf9f15ee PT |
2149 | if (current_attr.allocatable |
2150 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2151 | "must have the POINTER attribute")) | |
2152 | { | |
2153 | return false; | |
2154 | } | |
2155 | else if (current_attr.allocatable == 0) | |
2156 | { | |
9cbf8673 JW |
2157 | gfc_error ("Component at %C must have the POINTER attribute"); |
2158 | return false; | |
2159 | } | |
6de9cd9a | 2160 | } |
9cbf8673 JW |
2161 | |
2162 | /* F03:C437. */ | |
2163 | if (current_ts.type == BT_CLASS | |
2164 | && !(current_attr.pointer || current_attr.allocatable)) | |
2165 | { | |
2166 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2167 | "or pointer", name); | |
2168 | return false; | |
bf9f15ee | 2169 | } |
6de9cd9a | 2170 | |
636dff67 | 2171 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
2172 | { |
2173 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2174 | { | |
2175 | gfc_error ("Array component of structure at %C must have explicit " | |
2176 | "or deferred shape"); | |
524af0d6 | 2177 | return false; |
6de9cd9a DN |
2178 | } |
2179 | } | |
2180 | ||
f6288c24 FR |
2181 | /* If we are in a nested union/map definition, gfc_add_component will not |
2182 | properly find repeated components because: | |
6442a6f4 | 2183 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
2184 | and maps are implicity chained so nested components may conflict. |
2185 | (ii) Unions and maps are not linked as components of their parent | |
2186 | structures until after they are parsed. | |
2187 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2188 | we search each block directly from the parse stack until we find the top | |
2189 | level structure. */ | |
2190 | ||
2191 | s = gfc_state_stack; | |
2192 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2193 | { | |
2194 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2195 | { | |
2196 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2197 | if (c != NULL) | |
2198 | { | |
2f029c08 | 2199 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
2200 | name, &c->loc); |
2201 | return false; | |
2202 | } | |
2203 | /* Break after we've searched the entire chain. */ | |
2204 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2205 | break; | |
2206 | s = s->previous; | |
2207 | } | |
2208 | } | |
2209 | ||
524af0d6 JB |
2210 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2211 | return false; | |
6de9cd9a DN |
2212 | |
2213 | c->ts = current_ts; | |
bc21d315 JW |
2214 | if (c->ts.type == BT_CHARACTER) |
2215 | c->ts.u.cl = cl; | |
5bab4c96 PT |
2216 | |
2217 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2218 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2219 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2220 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2221 | ||
d4b7d0f0 | 2222 | c->attr = current_attr; |
6de9cd9a DN |
2223 | |
2224 | c->initializer = *init; | |
2225 | *init = NULL; | |
2226 | ||
2227 | c->as = *as; | |
2228 | if (c->as != NULL) | |
be59db2d TB |
2229 | { |
2230 | if (c->as->corank) | |
2231 | c->attr.codimension = 1; | |
2232 | if (c->as->rank) | |
2233 | c->attr.dimension = 1; | |
2234 | } | |
6de9cd9a DN |
2235 | *as = NULL; |
2236 | ||
7fc61626 | 2237 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2238 | |
6de9cd9a | 2239 | /* Check array components. */ |
d4b7d0f0 | 2240 | if (!c->attr.dimension) |
2e23972e | 2241 | goto scalar; |
6de9cd9a | 2242 | |
d4b7d0f0 | 2243 | if (c->attr.pointer) |
6de9cd9a DN |
2244 | { |
2245 | if (c->as->type != AS_DEFERRED) | |
2246 | { | |
5046aff5 PT |
2247 | gfc_error ("Pointer array component of structure at %C must have a " |
2248 | "deferred shape"); | |
a4f15a7d | 2249 | return false; |
5046aff5 PT |
2250 | } |
2251 | } | |
d4b7d0f0 | 2252 | else if (c->attr.allocatable) |
5046aff5 PT |
2253 | { |
2254 | if (c->as->type != AS_DEFERRED) | |
2255 | { | |
2256 | gfc_error ("Allocatable component of structure at %C must have a " | |
2257 | "deferred shape"); | |
a4f15a7d | 2258 | return false; |
6de9cd9a DN |
2259 | } |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | if (c->as->type != AS_EXPLICIT) | |
2264 | { | |
636dff67 SK |
2265 | gfc_error ("Array component of structure at %C must have an " |
2266 | "explicit shape"); | |
a4f15a7d | 2267 | return false; |
6de9cd9a DN |
2268 | } |
2269 | } | |
2270 | ||
2e23972e JW |
2271 | scalar: |
2272 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2273 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2274 | |
5bab4c96 PT |
2275 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2276 | { | |
2277 | gfc_symbol *sym; | |
2278 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2279 | 0, &sym); | |
2280 | if (sym == NULL) | |
2281 | { | |
2282 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2283 | "in the type parameter name list at %L", | |
2284 | c->name, &gfc_current_block ()->declared_at); | |
2285 | return false; | |
2286 | } | |
2287 | sym->ts = c->ts; | |
2288 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2289 | sym->attr.pdt_len = c->attr.pdt_len; | |
2290 | if (c->initializer) | |
2291 | sym->value = gfc_copy_expr (c->initializer); | |
2292 | sym->attr.flavor = FL_VARIABLE; | |
2293 | } | |
2294 | ||
2295 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2296 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2297 | && decl_type_param_list) | |
2298 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2299 | ||
a4f15a7d | 2300 | return true; |
6de9cd9a DN |
2301 | } |
2302 | ||
2303 | ||
2304 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2305 | ||
2306 | match | |
636dff67 | 2307 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2308 | { |
2309 | gfc_symbol *sym; | |
576f6da6 | 2310 | match m, m2 = MATCH_NO; |
6de9cd9a | 2311 | |
576f6da6 TB |
2312 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2313 | return MATCH_ERROR; | |
2314 | ||
2315 | if (m == MATCH_NO) | |
2316 | { | |
2317 | locus old_loc; | |
2318 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2319 | ||
94241120 | 2320 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2321 | return m2; |
2322 | ||
2323 | old_loc = gfc_current_locus; | |
2324 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2325 | return MATCH_ERROR; | |
2326 | if (m2 != MATCH_YES | |
2327 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2328 | return MATCH_ERROR; | |
2329 | if (m2 == MATCH_NO) | |
2330 | { | |
2331 | gfc_current_locus = old_loc; | |
2332 | return MATCH_NO; | |
2333 | } | |
2334 | } | |
6de9cd9a DN |
2335 | |
2336 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2337 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2338 | { | |
2339 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2340 | return MATCH_ERROR; | |
2341 | } | |
2342 | ||
2343 | gfc_intrinsic_symbol (sym); | |
2344 | ||
2345 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2346 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2347 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2348 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2349 | return MATCH_ERROR; |
2350 | ||
b7e75771 | 2351 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2352 | |
576f6da6 TB |
2353 | /* Invalid per F2008, C512. */ |
2354 | if (m2 == MATCH_YES) | |
2355 | { | |
2356 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2357 | return MATCH_ERROR; | |
2358 | } | |
2359 | ||
6de9cd9a DN |
2360 | return MATCH_YES; |
2361 | } | |
2362 | ||
2363 | ||
80f95228 JW |
2364 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2365 | ||
2366 | static match | |
2367 | match_pointer_init (gfc_expr **init, int procptr) | |
2368 | { | |
2369 | match m; | |
2370 | ||
f6288c24 | 2371 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2372 | { |
2373 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2374 | "a PURE procedure"); | |
2375 | return MATCH_ERROR; | |
2376 | } | |
ccd7751b | 2377 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2378 | |
eea58adb | 2379 | /* Match NULL() initialization. */ |
80f95228 JW |
2380 | m = gfc_match_null (init); |
2381 | if (m != MATCH_NO) | |
2382 | return m; | |
2383 | ||
2384 | /* Match non-NULL initialization. */ | |
837c4b78 | 2385 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2386 | gfc_matching_procptr_assignment = procptr; |
2387 | m = gfc_match_rvalue (init); | |
837c4b78 | 2388 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2389 | gfc_matching_procptr_assignment = 0; |
2390 | if (m == MATCH_ERROR) | |
2391 | return MATCH_ERROR; | |
2392 | else if (m == MATCH_NO) | |
2393 | { | |
2394 | gfc_error ("Error in pointer initialization at %C"); | |
2395 | return MATCH_ERROR; | |
2396 | } | |
2397 | ||
dc9a54fa JW |
2398 | if (!procptr && !gfc_resolve_expr (*init)) |
2399 | return MATCH_ERROR; | |
f5acf0f2 | 2400 | |
524af0d6 JB |
2401 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2402 | "initialization at %C")) | |
80f95228 JW |
2403 | return MATCH_ERROR; |
2404 | ||
2405 | return MATCH_YES; | |
2406 | } | |
2407 | ||
2408 | ||
524af0d6 | 2409 | static bool |
bb9de0c4 JW |
2410 | check_function_name (char *name) |
2411 | { | |
2412 | /* In functions that have a RESULT variable defined, the function name always | |
2413 | refers to function calls. Therefore, the name is not allowed to appear in | |
2414 | specification statements. When checking this, be careful about | |
2415 | 'hidden' procedure pointer results ('ppr@'). */ | |
2416 | ||
2417 | if (gfc_current_state () == COMP_FUNCTION) | |
2418 | { | |
2419 | gfc_symbol *block = gfc_current_block (); | |
2420 | if (block && block->result && block->result != block | |
2421 | && strcmp (block->result->name, "ppr@") != 0 | |
2422 | && strcmp (block->name, name) == 0) | |
2423 | { | |
ba77f7ba SK |
2424 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2425 | "from appearing in a specification statement", | |
2426 | block->result->name, &block->result->declared_at, name); | |
524af0d6 | 2427 | return false; |
bb9de0c4 JW |
2428 | } |
2429 | } | |
2430 | ||
524af0d6 | 2431 | return true; |
bb9de0c4 JW |
2432 | } |
2433 | ||
2434 | ||
6de9cd9a DN |
2435 | /* Match a variable name with an optional initializer. When this |
2436 | subroutine is called, a variable is expected to be parsed next. | |
2437 | Depending on what is happening at the moment, updates either the | |
2438 | symbol table or the current interface. */ | |
2439 | ||
2440 | static match | |
949d5b72 | 2441 | variable_decl (int elem) |
6de9cd9a DN |
2442 | { |
2443 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2444 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2445 | gfc_expr *initializer, *char_len; |
2446 | gfc_array_spec *as; | |
83d890b9 | 2447 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2448 | gfc_charlen *cl; |
e69afb29 | 2449 | bool cl_deferred; |
6de9cd9a DN |
2450 | locus var_locus; |
2451 | match m; | |
524af0d6 | 2452 | bool t; |
83d890b9 | 2453 | gfc_symbol *sym; |
0e8879cb | 2454 | char c; |
6de9cd9a DN |
2455 | |
2456 | initializer = NULL; | |
2457 | as = NULL; | |
83d890b9 | 2458 | cp_as = NULL; |
6de9cd9a DN |
2459 | |
2460 | /* When we get here, we've just matched a list of attributes and | |
2461 | maybe a type and a double colon. The next thing we expect to see | |
2462 | is the name of the symbol. */ | |
6f855a26 FR |
2463 | |
2464 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2465 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2466 | m = MATCH_NO; | |
2467 | gfc_gobble_whitespace (); | |
0e8879cb SK |
2468 | c = gfc_peek_ascii_char (); |
2469 | if (c == '%') | |
6f855a26 | 2470 | { |
0e8879cb | 2471 | gfc_next_ascii_char (); /* Burn % character. */ |
6f855a26 | 2472 | m = gfc_match ("fill"); |
0e8879cb | 2473 | if (m == MATCH_YES) |
6f855a26 | 2474 | { |
0e8879cb SK |
2475 | if (gfc_current_state () != COMP_STRUCTURE) |
2476 | { | |
2477 | if (flag_dec_structure) | |
2478 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2479 | else | |
2480 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
6f855a26 | 2481 | "%<-fdec-structure%>", "%FILL"); |
0e8879cb SK |
2482 | m = MATCH_ERROR; |
2483 | goto cleanup; | |
2484 | } | |
2485 | ||
2486 | if (attr_seen) | |
2487 | { | |
2488 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2489 | m = MATCH_ERROR; | |
2490 | goto cleanup; | |
2491 | } | |
6f855a26 | 2492 | |
0e8879cb SK |
2493 | /* %FILL components are given invalid fortran names. */ |
2494 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2495 | } | |
2496 | else | |
6f855a26 | 2497 | { |
0e8879cb SK |
2498 | gfc_error ("Invalid character %qc in variable name at %C", c); |
2499 | return MATCH_ERROR; | |
6f855a26 | 2500 | } |
0e8879cb SK |
2501 | } |
2502 | else | |
2503 | { | |
2504 | m = gfc_match_name (name); | |
2505 | if (m != MATCH_YES) | |
2506 | goto cleanup; | |
6f855a26 | 2507 | } |
6de9cd9a | 2508 | |
63645982 | 2509 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2510 | |
2511 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2512 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2513 | if (m == MATCH_ERROR) |
6de9cd9a | 2514 | goto cleanup; |
25d8f0a2 | 2515 | |
6de9cd9a DN |
2516 | if (m == MATCH_NO) |
2517 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2518 | else if (current_as |
524af0d6 | 2519 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2520 | { |
2521 | m = MATCH_ERROR; | |
2522 | goto cleanup; | |
2523 | } | |
6de9cd9a | 2524 | |
c61819ff | 2525 | if (flag_cray_pointer) |
11126dc0 AL |
2526 | cp_as = gfc_copy_array_spec (as); |
2527 | ||
f5ca06e6 DK |
2528 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2529 | determine (and check) whether it can be implied-shape. If it | |
67914693 | 2530 | was parsed as assumed-size, change it because PARAMETERs cannot |
09ef33c1 SK |
2531 | be assumed-size. |
2532 | ||
2533 | An explicit-shape-array cannot appear under several conditions. | |
2534 | That check is done here as well. */ | |
f5ca06e6 DK |
2535 | if (as) |
2536 | { | |
2537 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2538 | { | |
2539 | m = MATCH_ERROR; | |
1fe61adf | 2540 | gfc_error ("Non-PARAMETER symbol %qs at %L cannot be implied-shape", |
f5ca06e6 DK |
2541 | name, &var_locus); |
2542 | goto cleanup; | |
2543 | } | |
2544 | ||
2545 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2546 | && current_attr.flavor == FL_PARAMETER) | |
2547 | as->type = AS_IMPLIED_SHAPE; | |
2548 | ||
2549 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2550 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2551 | &var_locus)) |
f5ca06e6 DK |
2552 | { |
2553 | m = MATCH_ERROR; | |
2554 | goto cleanup; | |
2555 | } | |
09ef33c1 | 2556 | |
67251118 TK |
2557 | gfc_seen_div0 = false; |
2558 | ||
09ef33c1 SK |
2559 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not |
2560 | constant expressions shall appear only in a subprogram, derived | |
2561 | type definition, BLOCK construct, or interface body. */ | |
2562 | if (as->type == AS_EXPLICIT | |
2563 | && gfc_current_state () != COMP_BLOCK | |
2564 | && gfc_current_state () != COMP_DERIVED | |
2565 | && gfc_current_state () != COMP_FUNCTION | |
2566 | && gfc_current_state () != COMP_INTERFACE | |
2567 | && gfc_current_state () != COMP_SUBROUTINE) | |
2568 | { | |
2569 | gfc_expr *e; | |
2570 | bool not_constant = false; | |
2571 | ||
2572 | for (int i = 0; i < as->rank; i++) | |
2573 | { | |
2574 | e = gfc_copy_expr (as->lower[i]); | |
67251118 TK |
2575 | if (!gfc_resolve_expr (e) && gfc_seen_div0) |
2576 | { | |
2577 | m = MATCH_ERROR; | |
2578 | goto cleanup; | |
2579 | } | |
2580 | ||
09ef33c1 SK |
2581 | gfc_simplify_expr (e, 0); |
2582 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2583 | { | |
2584 | not_constant = true; | |
2585 | break; | |
2586 | } | |
2587 | gfc_free_expr (e); | |
2588 | ||
2589 | e = gfc_copy_expr (as->upper[i]); | |
67251118 TK |
2590 | if (!gfc_resolve_expr (e) && gfc_seen_div0) |
2591 | { | |
2592 | m = MATCH_ERROR; | |
2593 | goto cleanup; | |
2594 | } | |
2595 | ||
09ef33c1 SK |
2596 | gfc_simplify_expr (e, 0); |
2597 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2598 | { | |
2599 | not_constant = true; | |
2600 | break; | |
2601 | } | |
2602 | gfc_free_expr (e); | |
2603 | } | |
2604 | ||
2605 | if (not_constant) | |
5b9a3332 | 2606 | { |
09ef33c1 SK |
2607 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2608 | m = MATCH_ERROR; | |
2609 | goto cleanup; | |
2610 | } | |
2611 | } | |
078c5aff TK |
2612 | if (as->type == AS_EXPLICIT) |
2613 | { | |
2614 | for (int i = 0; i < as->rank; i++) | |
2615 | { | |
2616 | gfc_expr *e, *n; | |
2617 | e = as->lower[i]; | |
2618 | if (e->expr_type != EXPR_CONSTANT) | |
2619 | { | |
2620 | n = gfc_copy_expr (e); | |
67251118 TK |
2621 | if (!gfc_simplify_expr (n, 1) && gfc_seen_div0) |
2622 | { | |
2623 | m = MATCH_ERROR; | |
2624 | goto cleanup; | |
2625 | } | |
2626 | ||
078c5aff TK |
2627 | if (n->expr_type == EXPR_CONSTANT) |
2628 | gfc_replace_expr (e, n); | |
2629 | else | |
2630 | gfc_free_expr (n); | |
2631 | } | |
2632 | e = as->upper[i]; | |
2633 | if (e->expr_type != EXPR_CONSTANT) | |
2634 | { | |
2635 | n = gfc_copy_expr (e); | |
67251118 TK |
2636 | if (!gfc_simplify_expr (n, 1) && gfc_seen_div0) |
2637 | { | |
2638 | m = MATCH_ERROR; | |
2639 | goto cleanup; | |
2640 | } | |
2641 | ||
078c5aff TK |
2642 | if (n->expr_type == EXPR_CONSTANT) |
2643 | gfc_replace_expr (e, n); | |
2644 | else | |
2645 | gfc_free_expr (n); | |
2646 | } | |
2647 | } | |
2648 | } | |
f5ca06e6 DK |
2649 | } |
2650 | ||
6de9cd9a DN |
2651 | char_len = NULL; |
2652 | cl = NULL; | |
e69afb29 | 2653 | cl_deferred = false; |
6de9cd9a DN |
2654 | |
2655 | if (current_ts.type == BT_CHARACTER) | |
2656 | { | |
2767f2cc | 2657 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2658 | { |
2659 | case MATCH_YES: | |
b76e28c6 | 2660 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2661 | |
2662 | cl->length = char_len; | |
2663 | break; | |
2664 | ||
949d5b72 | 2665 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2666 | element. Also copy assumed lengths. */ |
6de9cd9a | 2667 | case MATCH_NO: |
9b21a380 | 2668 | if (elem > 1 |
bc21d315 JW |
2669 | && (current_ts.u.cl->length == NULL |
2670 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2671 | { |
b76e28c6 | 2672 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2673 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2674 | } |
2675 | else | |
bc21d315 | 2676 | cl = current_ts.u.cl; |
949d5b72 | 2677 | |
e69afb29 SK |
2678 | cl_deferred = current_ts.deferred; |
2679 | ||
6de9cd9a DN |
2680 | break; |
2681 | ||
2682 | case MATCH_ERROR: | |
2683 | goto cleanup; | |
2684 | } | |
2685 | } | |
2686 | ||
4668d6f9 PT |
2687 | /* The dummy arguments and result of the abreviated form of MODULE |
2688 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2689 | if (gfc_current_ns->proc_name | |
2690 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2691 | { | |
2692 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2693 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2694 | { | |
2695 | m = MATCH_ERROR; | |
811582ec | 2696 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2697 | "in the corresponding interface for MODULE " |
811582ec | 2698 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2699 | gfc_current_ns->proc_name->name); |
2700 | goto cleanup; | |
2701 | } | |
2702 | } | |
2703 | ||
6f855a26 | 2704 | /* %FILL components may not have initializers. */ |
2eb3745a | 2705 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
6f855a26 FR |
2706 | { |
2707 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2708 | m = MATCH_ERROR; | |
2709 | goto cleanup; | |
2710 | } | |
2711 | ||
83d890b9 | 2712 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2713 | and this is not a component declaration, |
66e4ab31 | 2714 | then we want to set the type & bail out. */ |
f6288c24 | 2715 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 | 2716 | { |
2345fe52 | 2717 | gfc_find_symbol (name, gfc_current_ns, 0, &sym); |
83d890b9 AL |
2718 | if (sym != NULL && sym->attr.cray_pointee) |
2719 | { | |
83d890b9 | 2720 | m = MATCH_YES; |
5b9a3332 PT |
2721 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2722 | { | |
2723 | m = MATCH_ERROR; | |
2724 | goto cleanup; | |
2725 | } | |
f5acf0f2 | 2726 | |
83d890b9 AL |
2727 | /* Check to see if we have an array specification. */ |
2728 | if (cp_as != NULL) | |
2729 | { | |
2730 | if (sym->as != NULL) | |
2731 | { | |
e25a0da3 | 2732 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2733 | gfc_free_array_spec (cp_as); |
2734 | m = MATCH_ERROR; | |
2735 | goto cleanup; | |
2736 | } | |
2737 | else | |
2738 | { | |
524af0d6 | 2739 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
1fe61adf | 2740 | gfc_internal_error ("Cannot set pointee array spec."); |
d51347f9 | 2741 | |
83d890b9 | 2742 | /* Fix the array spec. */ |
d51347f9 | 2743 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2744 | if (m == MATCH_ERROR) |
2745 | goto cleanup; | |
2746 | } | |
d51347f9 | 2747 | } |
83d890b9 AL |
2748 | goto cleanup; |
2749 | } | |
2750 | else | |
2751 | { | |
2752 | gfc_free_array_spec (cp_as); | |
2753 | } | |
2754 | } | |
d51347f9 | 2755 | |
3070bab4 JW |
2756 | /* Procedure pointer as function result. */ |
2757 | if (gfc_current_state () == COMP_FUNCTION | |
2758 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2759 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2760 | strcpy (name, "ppr@"); | |
2761 | ||
2762 | if (gfc_current_state () == COMP_FUNCTION | |
2763 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2764 | && gfc_current_block ()->result | |
2765 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2766 | strcpy (name, "ppr@"); | |
d51347f9 | 2767 | |
6de9cd9a DN |
2768 | /* OK, we've successfully matched the declaration. Now put the |
2769 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2770 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2771 | perfectly legal: |
2772 | ||
2773 | integer, parameter :: i = huge(i) | |
2774 | ||
2775 | This is only true for parameters or variables of a basic type. | |
2776 | For components of derived types, it is not true, so we don't | |
2777 | create a symbol for those yet. If we fail to create the symbol, | |
2778 | bail out. */ | |
f6288c24 | 2779 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2780 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2781 | { |
72af9f0b PT |
2782 | m = MATCH_ERROR; |
2783 | goto cleanup; | |
2784 | } | |
2785 | ||
524af0d6 | 2786 | if (!check_function_name (name)) |
6de9cd9a | 2787 | { |
6de9cd9a DN |
2788 | m = MATCH_ERROR; |
2789 | goto cleanup; | |
2790 | } | |
2791 | ||
294fbfc8 TS |
2792 | /* We allow old-style initializations of the form |
2793 | integer i /2/, j(4) /3*3, 1/ | |
2794 | (if no colon has been seen). These are different from data | |
2795 | statements in that initializers are only allowed to apply to the | |
2796 | variable immediately preceding, i.e. | |
2797 | integer i, j /1, 2/ | |
2798 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2799 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2800 | |
2801 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2802 | { | |
524af0d6 JB |
2803 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2804 | "initialization at %C")) | |
294fbfc8 | 2805 | return MATCH_ERROR; |
f6288c24 FR |
2806 | |
2807 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2808 | but not components of derived types. */ | |
b18f1efc JJ |
2809 | else if (gfc_current_state () == COMP_DERIVED) |
2810 | { | |
2811 | gfc_error ("Invalid old style initialization for derived type " | |
2812 | "component at %C"); | |
2813 | m = MATCH_ERROR; | |
2814 | goto cleanup; | |
2815 | } | |
f5acf0f2 | 2816 | |
f6288c24 FR |
2817 | /* For structure components, read the initializer as a special |
2818 | expression and let the rest of this function apply the initializer | |
2819 | as usual. */ | |
2820 | else if (gfc_comp_struct (gfc_current_state ())) | |
2821 | { | |
2822 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2823 | if (m == MATCH_NO) | |
2824 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2825 | name); | |
2826 | if (m != MATCH_YES) | |
2827 | goto cleanup; | |
2828 | } | |
2829 | ||
2830 | /* Otherwise we treat the old style initialization just like a | |
2831 | DATA declaration for the current variable. */ | |
2832 | else | |
2833 | return match_old_style_init (name); | |
294fbfc8 TS |
2834 | } |
2835 | ||
6de9cd9a DN |
2836 | /* The double colon must be present in order to have initializers. |
2837 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2838 | if (colon_seen) | |
2839 | { | |
2840 | if (gfc_match (" =>") == MATCH_YES) | |
2841 | { | |
6de9cd9a DN |
2842 | if (!current_attr.pointer) |
2843 | { | |
2844 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2845 | m = MATCH_ERROR; | |
2846 | goto cleanup; | |
2847 | } | |
2848 | ||
80f95228 | 2849 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2850 | if (m != MATCH_YES) |
2851 | goto cleanup; | |
2cf4aa79 SK |
2852 | |
2853 | /* The target of a pointer initialization must have the SAVE | |
2854 | attribute. A variable in PROGRAM, MODULE, or SUBMODULE scope | |
2855 | is implicit SAVEd. Explicitly, set the SAVE_IMPLICIT value. */ | |
2856 | if (initializer->expr_type == EXPR_VARIABLE | |
2857 | && initializer->symtree->n.sym->attr.save == SAVE_NONE | |
2858 | && (gfc_current_state () == COMP_PROGRAM | |
2859 | || gfc_current_state () == COMP_MODULE | |
2860 | || gfc_current_state () == COMP_SUBMODULE)) | |
2861 | initializer->symtree->n.sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2862 | } |
2863 | else if (gfc_match_char ('=') == MATCH_YES) | |
2864 | { | |
2865 | if (current_attr.pointer) | |
2866 | { | |
a4d9b221 TB |
2867 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2868 | "not %<=%>"); | |
6de9cd9a DN |
2869 | m = MATCH_ERROR; |
2870 | goto cleanup; | |
2871 | } | |
2872 | ||
2873 | m = gfc_match_init_expr (&initializer); | |
2874 | if (m == MATCH_NO) | |
2875 | { | |
2876 | gfc_error ("Expected an initialization expression at %C"); | |
2877 | m = MATCH_ERROR; | |
2878 | } | |
2879 | ||
ade20620 | 2880 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2881 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2882 | { |
636dff67 SK |
2883 | gfc_error ("Initialization of variable at %C is not allowed in " |
2884 | "a PURE procedure"); | |
6de9cd9a DN |
2885 | m = MATCH_ERROR; |
2886 | } | |
2887 | ||
ccd7751b | 2888 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2889 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2890 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2891 | ||
6de9cd9a DN |
2892 | if (m != MATCH_YES) |
2893 | goto cleanup; | |
2894 | } | |
cb44ab82 VL |
2895 | } |
2896 | ||
5046aff5 | 2897 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2898 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2899 | { |
636dff67 SK |
2900 | gfc_error ("Initialization of allocatable component at %C is not " |
2901 | "allowed"); | |
5046aff5 PT |
2902 | m = MATCH_ERROR; |
2903 | goto cleanup; | |
2904 | } | |
2905 | ||
18a4e7e3 PT |
2906 | if (gfc_current_state () == COMP_DERIVED |
2907 | && gfc_current_block ()->attr.pdt_template) | |
2908 | { | |
2909 | gfc_symbol *param; | |
2910 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2911 | 0, ¶m); | |
2912 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2913 | { | |
2914 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2915 | "not appear in the type parameter list at %L", | |
2916 | &gfc_current_block ()->declared_at); | |
2917 | m = MATCH_ERROR; | |
2918 | goto cleanup; | |
2919 | } | |
2920 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2921 | { | |
2922 | gfc_error ("The component at %C that appears in the type parameter " | |
2923 | "list at %L has neither the KIND nor LEN attribute", | |
2924 | &gfc_current_block ()->declared_at); | |
2925 | m = MATCH_ERROR; | |
2926 | goto cleanup; | |
2927 | } | |
2928 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2929 | { | |
2930 | gfc_error ("The component at %C which is a type parameter must be " | |
2931 | "a scalar"); | |
2932 | m = MATCH_ERROR; | |
2933 | goto cleanup; | |
2934 | } | |
2935 | else if (param && initializer) | |
a2ec7c4a SK |
2936 | { |
2937 | if (initializer->ts.type == BT_BOZ) | |
2938 | { | |
2939 | gfc_error ("BOZ literal constant at %L cannot appear as an " | |
2940 | "initializer", &initializer->where); | |
2941 | m = MATCH_ERROR; | |
2942 | goto cleanup; | |
2943 | } | |
2944 | param->value = gfc_copy_expr (initializer); | |
2945 | } | |
18a4e7e3 PT |
2946 | } |
2947 | ||
e310b381 | 2948 | /* Before adding a possible initilizer, do a simple check for compatibility |
26ca4e05 | 2949 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
e310b381 SK |
2950 | good thing. */ |
2951 | if (current_ts.type == BT_DERIVED && initializer | |
2952 | && (gfc_numeric_ts (&initializer->ts) | |
2953 | || initializer->ts.type == BT_LOGICAL | |
2954 | || initializer->ts.type == BT_CHARACTER)) | |
2955 | { | |
26ca4e05 | 2956 | gfc_error ("Incompatible initialization between a derived type " |
e310b381 | 2957 | "entity and an entity with %qs type at %C", |
f61e54e5 | 2958 | gfc_typename (initializer)); |
e310b381 SK |
2959 | m = MATCH_ERROR; |
2960 | goto cleanup; | |
2961 | } | |
2962 | ||
2963 | ||
54b4ba60 | 2964 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2965 | NULL here, because we sometimes also need to check if a |
2966 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2967 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2968 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2969 | else | |
54b4ba60 | 2970 | { |
5046aff5 | 2971 | if (current_ts.type == BT_DERIVED |
636dff67 | 2972 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2973 | initializer = gfc_default_initializer (¤t_ts); |
2974 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2975 | |
2976 | /* If we match a nested structure definition we expect to see the | |
2977 | * body even if the variable declarations blow up, so we need to keep | |
2978 | * the structure declaration around. */ | |
2979 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2980 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2981 | } |
6de9cd9a | 2982 | |
524af0d6 | 2983 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2984 | |
2985 | cleanup: | |
2986 | /* Free stuff up and return. */ | |
67251118 | 2987 | gfc_seen_div0 = false; |
6de9cd9a DN |
2988 | gfc_free_expr (initializer); |
2989 | gfc_free_array_spec (as); | |
2990 | ||
2991 | return m; | |
2992 | } | |
2993 | ||
2994 | ||
b2b81a3f BM |
2995 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2996 | This assumes that the byte size is equal to the kind number for | |
2997 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2998 | |
2999 | match | |
636dff67 | 3000 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
3001 | { |
3002 | match m; | |
5cf54585 | 3003 | int original_kind; |
6de9cd9a DN |
3004 | |
3005 | if (gfc_match_char ('*') != MATCH_YES) | |
3006 | return MATCH_NO; | |
3007 | ||
5cf54585 | 3008 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
3009 | if (m != MATCH_YES) |
3010 | return MATCH_ERROR; | |
3011 | ||
e45b3c75 ES |
3012 | original_kind = ts->kind; |
3013 | ||
6de9cd9a | 3014 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
3015 | if (ts->type == BT_COMPLEX) |
3016 | { | |
3017 | if (ts->kind % 2) | |
636dff67 SK |
3018 | { |
3019 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
3020 | gfc_basic_typename (ts->type), original_kind); | |
3021 | return MATCH_ERROR; | |
3022 | } | |
e45b3c75 | 3023 | ts->kind /= 2; |
f4347334 ZG |
3024 | |
3025 | } | |
3026 | ||
203c7ebf | 3027 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
3028 | ts->kind = 8; |
3029 | ||
3030 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3031 | { | |
3032 | if (ts->kind == 4) | |
3033 | { | |
203c7ebf | 3034 | if (flag_real4_kind == 8) |
f4347334 | 3035 | ts->kind = 8; |
203c7ebf | 3036 | if (flag_real4_kind == 10) |
f4347334 | 3037 | ts->kind = 10; |
203c7ebf | 3038 | if (flag_real4_kind == 16) |
f4347334 ZG |
3039 | ts->kind = 16; |
3040 | } | |
3041 | ||
3042 | if (ts->kind == 8) | |
3043 | { | |
203c7ebf | 3044 | if (flag_real8_kind == 4) |
f4347334 | 3045 | ts->kind = 4; |
203c7ebf | 3046 | if (flag_real8_kind == 10) |
f4347334 | 3047 | ts->kind = 10; |
203c7ebf | 3048 | if (flag_real8_kind == 16) |
f4347334 ZG |
3049 | ts->kind = 16; |
3050 | } | |
e45b3c75 | 3051 | } |
6de9cd9a | 3052 | |
e7a2d5fb | 3053 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 3054 | { |
e45b3c75 | 3055 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 3056 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
3057 | return MATCH_ERROR; |
3058 | } | |
3059 | ||
70112e2a PT |
3060 | if (!gfc_notify_std (GFC_STD_GNU, |
3061 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 3062 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
3063 | return MATCH_ERROR; |
3064 | ||
6de9cd9a DN |
3065 | return MATCH_YES; |
3066 | } | |
3067 | ||
3068 | ||
3069 | /* Match a kind specification. Since kinds are generally optional, we | |
3070 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
3071 | string is found, then we know we have an error. */ | |
3072 | ||
3073 | match | |
e2d29968 | 3074 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 3075 | { |
e2d29968 | 3076 | locus where, loc; |
6de9cd9a DN |
3077 | gfc_expr *e; |
3078 | match m, n; | |
96ee3a4a | 3079 | char c; |
6de9cd9a DN |
3080 | |
3081 | m = MATCH_NO; | |
e2d29968 | 3082 | n = MATCH_YES; |
6de9cd9a | 3083 | e = NULL; |
5bab4c96 | 3084 | saved_kind_expr = NULL; |
6de9cd9a | 3085 | |
e2d29968 PT |
3086 | where = loc = gfc_current_locus; |
3087 | ||
3088 | if (kind_expr_only) | |
3089 | goto kind_expr; | |
6de9cd9a DN |
3090 | |
3091 | if (gfc_match_char ('(') == MATCH_NO) | |
3092 | return MATCH_NO; | |
3093 | ||
3094 | /* Also gobbles optional text. */ | |
3095 | if (gfc_match (" kind = ") == MATCH_YES) | |
3096 | m = MATCH_ERROR; | |
3097 | ||
e2d29968 PT |
3098 | loc = gfc_current_locus; |
3099 | ||
3100 | kind_expr: | |
5bab4c96 | 3101 | |
6de9cd9a | 3102 | n = gfc_match_init_expr (&e); |
e2d29968 | 3103 | |
5bab4c96 PT |
3104 | if (gfc_derived_parameter_expr (e)) |
3105 | { | |
3106 | ts->kind = 0; | |
3107 | saved_kind_expr = gfc_copy_expr (e); | |
3108 | goto close_brackets; | |
3109 | } | |
3110 | ||
6de9cd9a | 3111 | if (n != MATCH_YES) |
e2d29968 | 3112 | { |
1c8bcdf7 | 3113 | if (gfc_matching_function) |
e2d29968 | 3114 | { |
f5acf0f2 | 3115 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
3116 | imported parameters and try again after the specification |
3117 | expressions..... */ | |
e2d29968 PT |
3118 | if (gfc_match_char (')') != MATCH_YES) |
3119 | { | |
3120 | gfc_error ("Missing right parenthesis at %C"); | |
3121 | m = MATCH_ERROR; | |
3122 | goto no_match; | |
3123 | } | |
3124 | ||
3125 | gfc_free_expr (e); | |
e2d29968 PT |
3126 | gfc_undo_symbols (); |
3127 | return MATCH_YES; | |
3128 | } | |
3129 | else | |
3130 | { | |
3131 | /* ....or else, the match is real. */ | |
3132 | if (n == MATCH_NO) | |
3133 | gfc_error ("Expected initialization expression at %C"); | |
3134 | if (n != MATCH_YES) | |
3135 | return MATCH_ERROR; | |
3136 | } | |
3137 | } | |
6de9cd9a DN |
3138 | |
3139 | if (e->rank != 0) | |
3140 | { | |
3141 | gfc_error ("Expected scalar initialization expression at %C"); | |
3142 | m = MATCH_ERROR; | |
3143 | goto no_match; | |
3144 | } | |
3145 | ||
51f03c6b | 3146 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 3147 | { |
6de9cd9a DN |
3148 | m = MATCH_ERROR; |
3149 | goto no_match; | |
3150 | } | |
3151 | ||
a8b3b0b6 CR |
3152 | /* Before throwing away the expression, let's see if we had a |
3153 | C interoperable kind (and store the fact). */ | |
3154 | if (e->ts.is_c_interop == 1) | |
3155 | { | |
eea58adb | 3156 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
3157 | of the named constants from iso_c_binding. */ |
3158 | ts->is_c_interop = e->ts.is_iso_c; | |
3159 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
3160 | if (e->symtree) |
3161 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 3162 | } |
f5acf0f2 | 3163 | |
6de9cd9a DN |
3164 | gfc_free_expr (e); |
3165 | e = NULL; | |
3166 | ||
a8b3b0b6 CR |
3167 | /* Ignore errors to this point, if we've gotten here. This means |
3168 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 3169 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
3170 | { |
3171 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3172 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
3173 | gfc_current_locus = where; |
3174 | return MATCH_ERROR; | |
6de9cd9a | 3175 | } |
96ee3a4a | 3176 | |
2ec855f1 TB |
3177 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3178 | if, e.g., c_double is used for COMPLEX as the standard | |
3179 | explicitly says that the kind type parameter for complex and real | |
3180 | variable is the same, i.e. c_float == c_float_complex. */ | |
3181 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3182 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3183 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 3184 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
3185 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3186 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 3187 | |
5bab4c96 PT |
3188 | close_brackets: |
3189 | ||
96ee3a4a | 3190 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
3191 | if ((c = gfc_next_ascii_char ()) != ')' |
3192 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 3193 | { |
96ee3a4a TB |
3194 | if (ts->type == BT_CHARACTER) |
3195 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3196 | else | |
3197 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 3198 | m = MATCH_ERROR; |
6de9cd9a | 3199 | } |
a8b3b0b6 CR |
3200 | else |
3201 | /* All tests passed. */ | |
3202 | m = MATCH_YES; | |
6de9cd9a | 3203 | |
a8b3b0b6 CR |
3204 | if(m == MATCH_ERROR) |
3205 | gfc_current_locus = where; | |
f4347334 | 3206 | |
203c7ebf | 3207 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
3208 | ts->kind = 8; |
3209 | ||
3210 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3211 | { | |
3212 | if (ts->kind == 4) | |
3213 | { | |
203c7ebf | 3214 | if (flag_real4_kind == 8) |
f4347334 | 3215 | ts->kind = 8; |
203c7ebf | 3216 | if (flag_real4_kind == 10) |
f4347334 | 3217 | ts->kind = 10; |
203c7ebf | 3218 | if (flag_real4_kind == 16) |
f4347334 ZG |
3219 | ts->kind = 16; |
3220 | } | |
3221 | ||
3222 | if (ts->kind == 8) | |
3223 | { | |
203c7ebf | 3224 | if (flag_real8_kind == 4) |
f4347334 | 3225 | ts->kind = 4; |
203c7ebf | 3226 | if (flag_real8_kind == 10) |
f4347334 | 3227 | ts->kind = 10; |
203c7ebf | 3228 | if (flag_real8_kind == 16) |
f4347334 ZG |
3229 | ts->kind = 16; |
3230 | } | |
3231 | } | |
3232 | ||
a8b3b0b6 CR |
3233 | /* Return what we know from the test(s). */ |
3234 | return m; | |
6de9cd9a DN |
3235 | |
3236 | no_match: | |
3237 | gfc_free_expr (e); | |
63645982 | 3238 | gfc_current_locus = where; |
6de9cd9a DN |
3239 | return m; |
3240 | } | |
3241 | ||
3242 | ||
187de1ed FXC |
3243 | static match |
3244 | match_char_kind (int * kind, int * is_iso_c) | |
3245 | { | |
3246 | locus where; | |
3247 | gfc_expr *e; | |
3248 | match m, n; | |
51f03c6b | 3249 | bool fail; |
187de1ed FXC |
3250 | |
3251 | m = MATCH_NO; | |
3252 | e = NULL; | |
3253 | where = gfc_current_locus; | |
3254 | ||
3255 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 3256 | |
1c8bcdf7 | 3257 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 3258 | { |
1c8bcdf7 | 3259 | /* The expression might include use-associated or imported |
f5acf0f2 | 3260 | parameters and try again after the specification |
1c8bcdf7 | 3261 | expressions. */ |
96ee3a4a | 3262 | gfc_free_expr (e); |
96ee3a4a TB |
3263 | gfc_undo_symbols (); |
3264 | return MATCH_YES; | |
3265 | } | |
3266 | ||
187de1ed FXC |
3267 | if (n == MATCH_NO) |
3268 | gfc_error ("Expected initialization expression at %C"); | |
3269 | if (n != MATCH_YES) | |
3270 | return MATCH_ERROR; | |
3271 | ||
3272 | if (e->rank != 0) | |
3273 | { | |
3274 | gfc_error ("Expected scalar initialization expression at %C"); | |
3275 | m = MATCH_ERROR; | |
3276 | goto no_match; | |
3277 | } | |
3278 | ||
87f3a5cf PT |
3279 | if (gfc_derived_parameter_expr (e)) |
3280 | { | |
3281 | saved_kind_expr = e; | |
3282 | *kind = 0; | |
3283 | return MATCH_YES; | |
3284 | } | |
3285 | ||
51f03c6b | 3286 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 3287 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 3288 | if (fail) |
187de1ed | 3289 | { |
187de1ed FXC |
3290 | m = MATCH_ERROR; |
3291 | goto no_match; | |
3292 | } | |
3293 | ||
3294 | gfc_free_expr (e); | |
3295 | ||
3296 | /* Ignore errors to this point, if we've gotten here. This means | |
3297 | we ignore the m=MATCH_ERROR from above. */ | |
3298 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3299 | { | |
3300 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3301 | m = MATCH_ERROR; | |
3302 | } | |
3303 | else | |
3304 | /* All tests passed. */ | |
3305 | m = MATCH_YES; | |
3306 | ||
3307 | if (m == MATCH_ERROR) | |
3308 | gfc_current_locus = where; | |
f5acf0f2 | 3309 | |
187de1ed FXC |
3310 | /* Return what we know from the test(s). */ |
3311 | return m; | |
3312 | ||
3313 | no_match: | |
3314 | gfc_free_expr (e); | |
3315 | gfc_current_locus = where; | |
3316 | return m; | |
3317 | } | |
3318 | ||
8234e5e0 | 3319 | |
6de9cd9a DN |
3320 | /* Match the various kind/length specifications in a CHARACTER |
3321 | declaration. We don't return MATCH_NO. */ | |
3322 | ||
8234e5e0 SK |
3323 | match |
3324 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3325 | { |
187de1ed | 3326 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3327 | gfc_charlen *cl; |
3328 | gfc_expr *len; | |
3329 | match m; | |
e69afb29 | 3330 | bool deferred; |
187de1ed | 3331 | |
6de9cd9a DN |
3332 | len = NULL; |
3333 | seen_length = 0; | |
187de1ed FXC |
3334 | kind = 0; |
3335 | is_iso_c = 0; | |
e69afb29 | 3336 | deferred = false; |
6de9cd9a DN |
3337 | |
3338 | /* Try the old-style specification first. */ | |
3339 | old_char_selector = 0; | |
3340 | ||
2767f2cc | 3341 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3342 | if (m != MATCH_NO) |
3343 | { | |
3344 | if (m == MATCH_YES) | |
3345 | old_char_selector = 1; | |
3346 | seen_length = 1; | |
3347 | goto done; | |
3348 | } | |
3349 | ||
3350 | m = gfc_match_char ('('); | |
3351 | if (m != MATCH_YES) | |
3352 | { | |
a8b3b0b6 | 3353 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3354 | goto done; |
3355 | } | |
3356 | ||
a8b3b0b6 | 3357 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3358 | if (gfc_match (" kind =") == MATCH_YES) |
3359 | { | |
187de1ed | 3360 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3361 | |
6de9cd9a DN |
3362 | if (m == MATCH_ERROR) |
3363 | goto done; | |
3364 | if (m == MATCH_NO) | |
3365 | goto syntax; | |
3366 | ||
3367 | if (gfc_match (" , len =") == MATCH_NO) | |
3368 | goto rparen; | |
3369 | ||
e69afb29 | 3370 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3371 | if (m == MATCH_NO) |
3372 | goto syntax; | |
3373 | if (m == MATCH_ERROR) | |
3374 | goto done; | |
3375 | seen_length = 1; | |
3376 | ||
3377 | goto rparen; | |
3378 | } | |
3379 | ||
66e4ab31 | 3380 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3381 | if (gfc_match (" len =") == MATCH_YES) |
3382 | { | |
e69afb29 | 3383 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3384 | if (m == MATCH_NO) |
3385 | goto syntax; | |
3386 | if (m == MATCH_ERROR) | |
3387 | goto done; | |
3388 | seen_length = 1; | |
3389 | ||
3390 | if (gfc_match_char (')') == MATCH_YES) | |
3391 | goto done; | |
3392 | ||
3393 | if (gfc_match (" , kind =") != MATCH_YES) | |
3394 | goto syntax; | |
3395 | ||
187de1ed FXC |
3396 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3397 | goto done; | |
6de9cd9a DN |
3398 | |
3399 | goto rparen; | |
3400 | } | |
3401 | ||
66e4ab31 | 3402 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3403 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3404 | if (m == MATCH_NO) |
3405 | goto syntax; | |
3406 | if (m == MATCH_ERROR) | |
3407 | goto done; | |
3408 | seen_length = 1; | |
3409 | ||
3410 | m = gfc_match_char (')'); | |
3411 | if (m == MATCH_YES) | |
3412 | goto done; | |
3413 | ||
3414 | if (gfc_match_char (',') != MATCH_YES) | |
3415 | goto syntax; | |
3416 | ||
a8b3b0b6 | 3417 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3418 | |
187de1ed | 3419 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3420 | if (m == MATCH_ERROR) |
3421 | goto done; | |
3422 | if (m == MATCH_NO) | |
3423 | goto syntax; | |
3424 | ||
3425 | rparen: | |
3426 | /* Require a right-paren at this point. */ | |
3427 | m = gfc_match_char (')'); | |
3428 | if (m == MATCH_YES) | |
3429 | goto done; | |
3430 | ||
3431 | syntax: | |
3432 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3433 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3434 | gfc_free_expr (len); |
3435 | return m; | |
6de9cd9a DN |
3436 | |
3437 | done: | |
a99d95a2 PT |
3438 | /* Deal with character functions after USE and IMPORT statements. */ |
3439 | if (gfc_matching_function) | |
1c8bcdf7 | 3440 | { |
a99d95a2 | 3441 | gfc_free_expr (len); |
1c8bcdf7 PT |
3442 | gfc_undo_symbols (); |
3443 | return MATCH_YES; | |
3444 | } | |
3445 | ||
6de9cd9a DN |
3446 | if (m != MATCH_YES) |
3447 | { | |
3448 | gfc_free_expr (len); | |
3449 | return m; | |
3450 | } | |
3451 | ||
3452 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3453 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3454 | |
3455 | if (seen_length == 0) | |
f622221a | 3456 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3457 | else |
00df7c36 | 3458 | { |
3cf89a7b SK |
3459 | /* If gfortran ends up here, then len may be reducible to a constant. |
3460 | Try to do that here. If it does not reduce, simply assign len to | |
3461 | charlen. A complication occurs with user-defined generic functions, | |
3462 | which are not resolved. Use a private namespace to deal with | |
3463 | generic functions. */ | |
3464 | ||
00df7c36 SK |
3465 | if (len && len->expr_type != EXPR_CONSTANT) |
3466 | { | |
3cf89a7b | 3467 | gfc_namespace *old_ns; |
00df7c36 | 3468 | gfc_expr *e; |
3cf89a7b SK |
3469 | |
3470 | old_ns = gfc_current_ns; | |
3471 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3472 | ||
00df7c36 SK |
3473 | e = gfc_copy_expr (len); |
3474 | gfc_reduce_init_expr (e); | |
3475 | if (e->expr_type == EXPR_CONSTANT) | |
58da192e SK |
3476 | { |
3477 | gfc_replace_expr (len, e); | |
3478 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3479 | mpz_set_ui (len->value.integer, 0); | |
3480 | } | |
00df7c36 SK |
3481 | else |
3482 | gfc_free_expr (e); | |
3cf89a7b SK |
3483 | |
3484 | gfc_free_namespace (gfc_current_ns); | |
3485 | gfc_current_ns = old_ns; | |
00df7c36 | 3486 | } |
3cf89a7b SK |
3487 | |
3488 | cl->length = len; | |
00df7c36 | 3489 | } |
6de9cd9a | 3490 | |
bc21d315 | 3491 | ts->u.cl = cl; |
187de1ed | 3492 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3493 | ts->deferred = deferred; |
6de9cd9a | 3494 | |
eea58adb | 3495 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3496 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3497 | if (kind != 0) |
eea58adb | 3498 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3499 | of the named constants from iso_c_binding. */ |
3500 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3501 | else if (len != NULL) |
187de1ed FXC |
3502 | /* Here, we might have parsed something such as: character(c_char) |
3503 | In this case, the parsing code above grabs the c_char when | |
3504 | looking for the length (line 1690, roughly). it's the last | |
3505 | testcase for parsing the kind params of a character variable. | |
3506 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3507 | could be an error. |
187de1ed FXC |
3508 | To see if the user used a C interop kind, test the expr |
3509 | of the so called length, and see if it's C interoperable. */ | |
3510 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3511 | |
6de9cd9a DN |
3512 | return MATCH_YES; |
3513 | } | |
3514 | ||
3515 | ||
f6288c24 FR |
3516 | /* Matches a RECORD declaration. */ |
3517 | ||
3518 | static match | |
e79e6763 | 3519 | match_record_decl (char *name) |
f6288c24 FR |
3520 | { |
3521 | locus old_loc; | |
3522 | old_loc = gfc_current_locus; | |
e79e6763 | 3523 | match m; |
f6288c24 | 3524 | |
e79e6763 FR |
3525 | m = gfc_match (" record /"); |
3526 | if (m == MATCH_YES) | |
f6288c24 | 3527 | { |
f6d17ecd | 3528 | if (!flag_dec_structure) |
f6288c24 FR |
3529 | { |
3530 | gfc_current_locus = old_loc; | |
3531 | gfc_error ("RECORD at %C is an extension, enable it with " | |
a3f9f006 | 3532 | "%<-fdec-structure%>"); |
f6288c24 FR |
3533 | return MATCH_ERROR; |
3534 | } | |
e79e6763 FR |
3535 | m = gfc_match (" %n/", name); |
3536 | if (m == MATCH_YES) | |
3537 | return MATCH_YES; | |
f6288c24 FR |
3538 | } |
3539 | ||
e79e6763 | 3540 | gfc_current_locus = old_loc; |
f6d17ecd | 3541 | if (flag_dec_structure |
e79e6763 FR |
3542 | && (gfc_match (" record% ") == MATCH_YES |
3543 | || gfc_match (" record%t") == MATCH_YES)) | |
3544 | gfc_error ("Structure name expected after RECORD at %C"); | |
3545 | if (m == MATCH_NO) | |
f6288c24 | 3546 | return MATCH_NO; |
e79e6763 FR |
3547 | |
3548 | return MATCH_ERROR; | |
f6288c24 FR |
3549 | } |
3550 | ||
5bab4c96 PT |
3551 | |
3552 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3553 | of expressions to substitute into the possibly parameterized expression | |
3554 | 'e'. Using a list is inefficient but should not be too bad since the | |
3555 | number of type parameters is not likely to be large. */ | |
3556 | static bool | |
3557 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3558 | int* f) | |
3559 | { | |
3560 | gfc_actual_arglist *param; | |
3561 | gfc_expr *copy; | |
3562 | ||
3563 | if (e->expr_type != EXPR_VARIABLE) | |
3564 | return false; | |
3565 | ||
3566 | gcc_assert (e->symtree); | |
3567 | if (e->symtree->n.sym->attr.pdt_kind | |
3568 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3569 | { | |
3570 | for (param = type_param_spec_list; param; param = param->next) | |
3571 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3572 | break; | |
3573 | ||
3574 | if (param) | |
3575 | { | |
3576 | copy = gfc_copy_expr (param->expr); | |
3577 | *e = *copy; | |
3578 | free (copy); | |
3579 | } | |
3580 | } | |
3581 | ||
3582 | return false; | |
3583 | } | |
3584 | ||
3585 | ||
3586 | bool | |
3587 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3588 | { | |
3589 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3590 | } | |
3591 | ||
3592 | ||
3593 | bool | |
3594 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3595 | { | |
3596 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3597 | type_param_spec_list = param_list; | |
3598 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3599 | type_param_spec_list = NULL; | |
3600 | type_param_spec_list = old_param_spec_list; | |
3601 | } | |
3602 | ||
3603 | /* Determines the instance of a parameterized derived type to be used by | |
3604 | matching determining the values of the kind parameters and using them | |
3605 | in the name of the instance. If the instance exists, it is used, otherwise | |
3606 | a new derived type is created. */ | |
3607 | match | |
3608 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3609 | gfc_actual_arglist **ext_param_list) | |
3610 | { | |
3611 | /* The PDT template symbol. */ | |
3612 | gfc_symbol *pdt = *sym; | |
3613 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3614 | gfc_symbol *param; | |
3615 | /* The hoped for instance of the PDT. */ | |
3616 | gfc_symbol *instance; | |
3617 | /* The list of parameters appearing in the PDT declaration. */ | |
3618 | gfc_formal_arglist *type_param_name_list; | |
3619 | /* Used to store the parameter specification list during recursive calls. */ | |
3620 | gfc_actual_arglist *old_param_spec_list; | |
3621 | /* Pointers to the parameter specification being used. */ | |
3622 | gfc_actual_arglist *actual_param; | |
3623 | gfc_actual_arglist *tail = NULL; | |
3624 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3625 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3626 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3627 | ||
3628 | bool name_seen = (param_list == NULL); | |
3629 | bool assumed_seen = false; | |
3630 | bool deferred_seen = false; | |
3631 | bool spec_error = false; | |
3632 | int kind_value, i; | |
3633 | gfc_expr *kind_expr; | |
3634 | gfc_component *c1, *c2; | |
3635 | match m; | |
3636 | ||
3637 | type_param_spec_list = NULL; | |
3638 | ||
3639 | type_param_name_list = pdt->formal; | |
3640 | actual_param = param_list; | |
3641 | sprintf (name, "Pdt%s", pdt->name); | |
3642 | ||
3643 | /* Run through the parameter name list and pick up the actual | |
3644 | parameter values or use the default values in the PDT declaration. */ | |
3645 | for (; type_param_name_list; | |
3646 | type_param_name_list = type_param_name_list->next) | |
3647 | { | |
3648 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3649 | { | |
3650 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3651 | spec_error = deferred_seen; | |
3652 | else | |
3653 | spec_error = assumed_seen; | |
3654 | ||
3655 | if (spec_error) | |
3656 | { | |
3657 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3658 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3659 | goto error_return; |
5bab4c96 PT |
3660 | } |
3661 | } | |
3662 | ||
3663 | if (actual_param && actual_param->name) | |
3664 | name_seen = true; | |
3665 | param = type_param_name_list->sym; | |
3666 | ||
276515e6 PT |
3667 | if (!param || !param->name) |
3668 | continue; | |
3669 | ||
18a4e7e3 | 3670 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3671 | /* An error should already have been thrown in resolve.c |
3672 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3673 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3674 | goto error_return; |
18a4e7e3 | 3675 | |
5bab4c96 PT |
3676 | kind_expr = NULL; |
3677 | if (!name_seen) | |
3678 | { | |
18a4e7e3 PT |
3679 | if (!actual_param && !(c1 && c1->initializer)) |
3680 | { | |
3681 | gfc_error ("The type parameter spec list at %C does not contain " | |
3682 | "enough parameter expressions"); | |
3683 | goto error_return; | |
3684 | } | |
3685 | else if (!actual_param && c1 && c1->initializer) | |
3686 | kind_expr = gfc_copy_expr (c1->initializer); | |
3687 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3688 | kind_expr = gfc_copy_expr (actual_param->expr); |
3689 | } | |
3690 | else | |
3691 | { | |
3692 | actual_param = param_list; | |
3693 | for (;actual_param; actual_param = actual_param->next) | |
3694 | if (actual_param->name | |
3695 | && strcmp (actual_param->name, param->name) == 0) | |
3696 | break; | |
3697 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3698 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3699 | else | |
3700 | { | |
62d3c075 PT |
3701 | if (c1->initializer) |
3702 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3703 | else if (!(actual_param && param->attr.pdt_len)) |
3704 | { | |
71a21b9e | 3705 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3706 | "have a default value", param->name); |
18a4e7e3 | 3707 | goto error_return; |
5bab4c96 PT |
3708 | } |
3709 | } | |
3710 | } | |
3711 | ||
3712 | /* Store the current parameter expressions in a temporary actual | |
3713 | arglist 'list' so that they can be substituted in the corresponding | |
3714 | expressions in the PDT instance. */ | |
3715 | if (type_param_spec_list == NULL) | |
3716 | { | |
3717 | type_param_spec_list = gfc_get_actual_arglist (); | |
3718 | tail = type_param_spec_list; | |
3719 | } | |
3720 | else | |
3721 | { | |
3722 | tail->next = gfc_get_actual_arglist (); | |
3723 | tail = tail->next; | |
3724 | } | |
3725 | tail->name = param->name; | |
3726 | ||
3727 | if (kind_expr) | |
3728 | { | |
87f3a5cf PT |
3729 | /* Try simplification even for LEN expressions. */ |
3730 | gfc_resolve_expr (kind_expr); | |
3731 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3732 | /* Variable expressions seem to default to BT_PROCEDURE. |
3733 | TODO find out why this is and fix it. */ | |
3734 | if (kind_expr->ts.type != BT_INTEGER | |
3735 | && kind_expr->ts.type != BT_PROCEDURE) | |
3736 | { | |
3737 | gfc_error ("The parameter expression at %C must be of " | |
3738 | "INTEGER type and not %s type", | |
3739 | gfc_basic_typename (kind_expr->ts.type)); | |
3740 | goto error_return; | |
3741 | } | |
3742 | ||
5bab4c96 | 3743 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3744 | } |
3745 | ||
3746 | if (actual_param) | |
3747 | tail->spec_type = actual_param->spec_type; | |
3748 | ||
3749 | if (!param->attr.pdt_kind) | |
3750 | { | |
18a4e7e3 | 3751 | if (!name_seen && actual_param) |
5bab4c96 PT |
3752 | actual_param = actual_param->next; |
3753 | if (kind_expr) | |
3754 | { | |
3755 | gfc_free_expr (kind_expr); | |
3756 | kind_expr = NULL; | |
3757 | } | |
3758 | continue; | |
3759 | } | |
3760 | ||
3761 | if (actual_param | |
3762 | && (actual_param->spec_type == SPEC_ASSUMED | |
3763 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3764 | { | |
71a21b9e | 3765 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3766 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3767 | goto error_return; |
5bab4c96 PT |
3768 | } |
3769 | ||
3770 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3771 | { | |
71a21b9e | 3772 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3773 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3774 | goto error_return; |
5bab4c96 PT |
3775 | } |
3776 | ||
3777 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3778 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3779 | |
3780 | if (!name_seen && actual_param) | |
3781 | actual_param = actual_param->next; | |
3782 | gfc_free_expr (kind_expr); | |
3783 | } | |
3784 | ||
18a4e7e3 PT |
3785 | if (!name_seen && actual_param) |
3786 | { | |
3787 | gfc_error ("The type parameter spec list at %C contains too many " | |
3788 | "parameter expressions"); | |
3789 | goto error_return; | |
3790 | } | |
3791 | ||
5bab4c96 PT |
3792 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3793 | build it, using 'pdt' as a template. */ | |
3794 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3795 | { | |
3796 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3797 | goto error_return; |
5bab4c96 PT |
3798 | } |
3799 | ||
3800 | m = MATCH_YES; | |
3801 | ||
3802 | if (instance->attr.flavor == FL_DERIVED | |
3803 | && instance->attr.pdt_type) | |
3804 | { | |
3805 | instance->refs++; | |
3806 | if (ext_param_list) | |
3807 | *ext_param_list = type_param_spec_list; | |
3808 | *sym = instance; | |
3809 | gfc_commit_symbols (); | |
3810 | return m; | |
3811 | } | |
3812 | ||
3813 | /* Start building the new instance of the parameterized type. */ | |
3814 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3815 | instance->attr.pdt_template = 0; | |
3816 | instance->attr.pdt_type = 1; | |
3817 | instance->declared_at = gfc_current_locus; | |
3818 | ||
3819 | /* Add the components, replacing the parameters in all expressions | |
3820 | with the expressions for their values in 'type_param_spec_list'. */ | |
3821 | c1 = pdt->components; | |
3822 | tail = type_param_spec_list; | |
3823 | for (; c1; c1 = c1->next) | |
3824 | { | |
3825 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3826 | |
5bab4c96 PT |
3827 | c2->ts = c1->ts; |
3828 | c2->attr = c1->attr; | |
3829 | ||
276515e6 PT |
3830 | /* The order of declaration of the type_specs might not be the |
3831 | same as that of the components. */ | |
3832 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3833 | { | |
3834 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3835 | if (strcmp (c1->name, tail->name) == 0) | |
3836 | break; | |
3837 | } | |
3838 | ||
5bab4c96 PT |
3839 | /* Deal with type extension by recursively calling this function |
3840 | to obtain the instance of the extended type. */ | |
3841 | if (gfc_current_state () != COMP_DERIVED | |
3842 | && c1 == pdt->components | |
3843 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3844 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3845 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3846 | { | |
3847 | gfc_formal_arglist *f; | |
3848 | ||
3849 | old_param_spec_list = type_param_spec_list; | |
3850 | ||
3851 | /* Obtain a spec list appropriate to the extended type..*/ | |
3852 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3853 | type_param_spec_list = actual_param; | |
3854 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3855 | actual_param = actual_param->next; | |
3856 | if (actual_param) | |
3857 | { | |
3858 | gfc_free_actual_arglist (actual_param->next); | |
3859 | actual_param->next = NULL; | |
3860 | } | |
3861 | ||
3862 | /* Now obtain the PDT instance for the extended type. */ | |
3863 | c2->param_list = type_param_spec_list; | |
3864 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3865 | NULL); | |
3866 | type_param_spec_list = old_param_spec_list; | |
3867 | ||
3868 | c2->ts.u.derived->refs++; | |
3869 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3870 | ||
3871 | /* Set extension level. */ | |
3872 | if (c2->ts.u.derived->attr.extension == 255) | |
3873 | { | |
3874 | /* Since the extension field is 8 bit wide, we can only have | |
3875 | up to 255 extension levels. */ | |
3876 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3877 | c2->ts.u.derived->name, | |
3878 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3879 | goto error_return; |
5bab4c96 PT |
3880 | } |
3881 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3882 | ||
5bab4c96 PT |
3883 | continue; |
3884 | } | |
3885 | ||
3886 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3887 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3888 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3889 | { |
3890 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3891 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3892 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3893 | gfc_extract_int (e, &c2->ts.kind); |
3894 | gfc_free_expr (e); | |
18a4e7e3 PT |
3895 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3896 | { | |
3897 | gfc_error ("Kind %d not supported for type %s at %C", | |
3898 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3899 | goto error_return; | |
3900 | } | |
5bab4c96 PT |
3901 | } |
3902 | ||
3903 | /* Similarly, set the string length if parameterized. */ | |
3904 | if (c1->ts.type == BT_CHARACTER | |
3905 | && c1->ts.u.cl->length | |
3906 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3907 | { | |
3908 | gfc_expr *e; | |
3909 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3910 | gfc_insert_kind_parameter_exprs (e); | |
3911 | gfc_simplify_expr (e, 1); | |
3912 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3913 | c2->ts.u.cl->length = e; | |
3914 | c2->attr.pdt_string = 1; | |
3915 | } | |
3916 | ||
3917 | /* Set up either the KIND/LEN initializer, if constant, | |
3918 | or the parameterized expression. Use the template | |
3919 | initializer if one is not already set in this instance. */ | |
3920 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3921 | { | |
3922 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3923 | c2->initializer = gfc_copy_expr (tail->expr); | |
3924 | else if (tail && tail->expr) | |
3925 | { | |
3926 | c2->param_list = gfc_get_actual_arglist (); | |
3927 | c2->param_list->name = tail->name; | |
3928 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3929 | c2->param_list->next = NULL; | |
3930 | } | |
3931 | ||
3932 | if (!c2->initializer && c1->initializer) | |
3933 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3934 | } |
3935 | ||
3936 | /* Copy the array spec. */ | |
3937 | c2->as = gfc_copy_array_spec (c1->as); | |
3938 | if (c1->ts.type == BT_CLASS) | |
3939 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3940 | ||
3941 | /* Determine if an array spec is parameterized. If so, substitute | |
3942 | in the parameter expressions for the bounds and set the pdt_array | |
3943 | attribute. Notice that this attribute must be unconditionally set | |
3944 | if this is an array of parameterized character length. */ | |
3945 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3946 | { | |
3947 | bool pdt_array = false; | |
3948 | ||
3949 | /* Are the bounds of the array parameterized? */ | |
3950 | for (i = 0; i < c1->as->rank; i++) | |
3951 | { | |
3952 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3953 | pdt_array = true; | |
3954 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3955 | pdt_array = true; | |
3956 | } | |
3957 | ||
3958 | /* If they are, free the expressions for the bounds and | |
3959 | replace them with the template expressions with substitute | |
3960 | values. */ | |
3961 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3962 | { | |
3963 | gfc_expr *e; | |
3964 | e = gfc_copy_expr (c1->as->lower[i]); | |
3965 | gfc_insert_kind_parameter_exprs (e); | |
3966 | gfc_simplify_expr (e, 1); | |
3967 | gfc_free_expr (c2->as->lower[i]); | |
3968 | c2->as->lower[i] = e; | |
3969 | e = gfc_copy_expr (c1->as->upper[i]); | |
3970 | gfc_insert_kind_parameter_exprs (e); | |
3971 | gfc_simplify_expr (e, 1); | |
3972 | gfc_free_expr (c2->as->upper[i]); | |
3973 | c2->as->upper[i] = e; | |
3974 | } | |
3975 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3976 | if (c1->initializer) |
3977 | { | |
3978 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3979 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3980 | gfc_simplify_expr (c2->initializer, 1); | |
3981 | } | |
5bab4c96 PT |
3982 | } |
3983 | ||
3984 | /* Recurse into this function for PDT components. */ | |
3985 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3986 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3987 | { | |
3988 | gfc_actual_arglist *params; | |
3989 | /* The component in the template has a list of specification | |
3990 | expressions derived from its declaration. */ | |
3991 | params = gfc_copy_actual_arglist (c1->param_list); | |
3992 | actual_param = params; | |
3993 | /* Substitute the template parameters with the expressions | |
3994 | from the specification list. */ | |
3995 | for (;actual_param; actual_param = actual_param->next) | |
3996 | gfc_insert_parameter_exprs (actual_param->expr, | |
3997 | type_param_spec_list); | |
3998 | ||
3999 | /* Now obtain the PDT instance for the component. */ | |
4000 | old_param_spec_list = type_param_spec_list; | |
4001 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
4002 | type_param_spec_list = old_param_spec_list; | |
4003 | ||
4004 | c2->param_list = params; | |
2fcd5884 PT |
4005 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
4006 | c2->initializer = gfc_default_initializer (&c2->ts); | |
4007 | ||
4008 | if (c2->attr.allocatable) | |
4009 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
4010 | } |
4011 | } | |
4012 | ||
4013 | gfc_commit_symbol (instance); | |
4014 | if (ext_param_list) | |
4015 | *ext_param_list = type_param_spec_list; | |
4016 | *sym = instance; | |
4017 | return m; | |
18a4e7e3 PT |
4018 | |
4019 | error_return: | |
4020 | gfc_free_actual_arglist (type_param_spec_list); | |
4021 | return MATCH_ERROR; | |
5bab4c96 PT |
4022 | } |
4023 | ||
4024 | ||
2028ce45 SK |
4025 | /* Match a legacy nonstandard BYTE type-spec. */ |
4026 | ||
4027 | static match | |
4028 | match_byte_typespec (gfc_typespec *ts) | |
4029 | { | |
4030 | if (gfc_match (" byte") == MATCH_YES) | |
4031 | { | |
4032 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) | |
4033 | return MATCH_ERROR; | |
4034 | ||
4035 | if (gfc_current_form == FORM_FREE) | |
4036 | { | |
4037 | char c = gfc_peek_ascii_char (); | |
4038 | if (!gfc_is_whitespace (c) && c != ',') | |
4039 | return MATCH_NO; | |
4040 | } | |
4041 | ||
4042 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
4043 | { | |
4044 | gfc_error ("BYTE type used at %C " | |
4045 | "is not available on the target machine"); | |
4046 | return MATCH_ERROR; | |
4047 | } | |
4048 | ||
4049 | ts->type = BT_INTEGER; | |
4050 | ts->kind = 1; | |
4051 | return MATCH_YES; | |
4052 | } | |
4053 | return MATCH_NO; | |
4054 | } | |
4055 | ||
4056 | ||
e74f1cc8 JW |
4057 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
4058 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
4059 | IMPLICIT statements. |
4060 | ||
d51347f9 | 4061 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 4062 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
4063 | statement correctly. */ |
4064 | ||
e2d29968 | 4065 | match |
e74f1cc8 | 4066 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
4067 | { |
4068 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 4069 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 4070 | match m; |
8fc541d3 | 4071 | char c; |
0fb56814 | 4072 | bool seen_deferred_kind, matched_type; |
c3f34952 | 4073 | const char *dt_name; |
6de9cd9a | 4074 | |
5bab4c96 PT |
4075 | decl_type_param_list = NULL; |
4076 | ||
1c8bcdf7 PT |
4077 | /* A belt and braces check that the typespec is correctly being treated |
4078 | as a deferred characteristic association. */ | |
4079 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
4080 | && (gfc_current_block ()->result->ts.kind == -1) |
4081 | && (ts->kind == -1); | |
6de9cd9a | 4082 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
4083 | if (seen_deferred_kind) |
4084 | ts->kind = -1; | |
6de9cd9a | 4085 | |
a8b3b0b6 | 4086 | /* Clear the current binding label, in case one is given. */ |
62603fae | 4087 | curr_binding_label = NULL; |
a8b3b0b6 | 4088 | |
2028ce45 SK |
4089 | /* Match BYTE type-spec. */ |
4090 | m = match_byte_typespec (ts); | |
4091 | if (m != MATCH_NO) | |
4092 | return m; | |
5f700e6d | 4093 | |
45a69325 | 4094 | m = gfc_match (" type ("); |
0fb56814 | 4095 | matched_type = (m == MATCH_YES); |
45a69325 TB |
4096 | if (matched_type) |
4097 | { | |
4098 | gfc_gobble_whitespace (); | |
4099 | if (gfc_peek_ascii_char () == '*') | |
4100 | { | |
4101 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
4102 | return m; | |
f6288c24 | 4103 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
4104 | { |
4105 | gfc_error ("Assumed type at %C is not allowed for components"); | |
4106 | return MATCH_ERROR; | |
4107 | } | |
286f737c | 4108 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
45a69325 TB |
4109 | return MATCH_ERROR; |
4110 | ts->type = BT_ASSUMED; | |
4111 | return MATCH_YES; | |
4112 | } | |
4113 | ||
4114 | m = gfc_match ("%n", name); | |
4115 | matched_type = (m == MATCH_YES); | |
4116 | } | |
4117 | ||
0fb56814 TB |
4118 | if ((matched_type && strcmp ("integer", name) == 0) |
4119 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
4120 | { |
4121 | ts->type = BT_INTEGER; | |
9d64df18 | 4122 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
4123 | goto get_kind; |
4124 | } | |
4125 | ||
0fb56814 TB |
4126 | if ((matched_type && strcmp ("character", name) == 0) |
4127 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 4128 | { |
0fb56814 | 4129 | if (matched_type |
524af0d6 JB |
4130 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4131 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4132 | return MATCH_ERROR; |
4133 | ||
6de9cd9a | 4134 | ts->type = BT_CHARACTER; |
e5ddaa24 | 4135 | if (implicit_flag == 0) |
0fb56814 | 4136 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 4137 | else |
0fb56814 TB |
4138 | m = MATCH_YES; |
4139 | ||
4140 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
0e521c64 SK |
4141 | { |
4142 | gfc_error ("Malformed type-spec at %C"); | |
4143 | return MATCH_ERROR; | |
4144 | } | |
0fb56814 TB |
4145 | |
4146 | return m; | |
6de9cd9a DN |
4147 | } |
4148 | ||
0fb56814 TB |
4149 | if ((matched_type && strcmp ("real", name) == 0) |
4150 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
4151 | { |
4152 | ts->type = BT_REAL; | |
9d64df18 | 4153 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
4154 | goto get_kind; |
4155 | } | |
4156 | ||
0fb56814 TB |
4157 | if ((matched_type |
4158 | && (strcmp ("doubleprecision", name) == 0 | |
4159 | || (strcmp ("double", name) == 0 | |
4160 | && gfc_match (" precision") == MATCH_YES))) | |
4161 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 4162 | { |
0fb56814 | 4163 | if (matched_type |
524af0d6 JB |
4164 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4165 | "intrinsic-type-spec at %C")) | |
0fb56814 | 4166 | return MATCH_ERROR; |
0e521c64 | 4167 | |
0fb56814 | 4168 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
0e521c64 SK |
4169 | { |
4170 | gfc_error ("Malformed type-spec at %C"); | |
4171 | return MATCH_ERROR; | |
4172 | } | |
0fb56814 | 4173 | |
6de9cd9a | 4174 | ts->type = BT_REAL; |
9d64df18 | 4175 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4176 | return MATCH_YES; |
4177 | } | |
4178 | ||
0fb56814 TB |
4179 | if ((matched_type && strcmp ("complex", name) == 0) |
4180 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
4181 | { |
4182 | ts->type = BT_COMPLEX; | |
9d64df18 | 4183 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
4184 | goto get_kind; |
4185 | } | |
4186 | ||
0fb56814 TB |
4187 | if ((matched_type |
4188 | && (strcmp ("doublecomplex", name) == 0 | |
4189 | || (strcmp ("double", name) == 0 | |
4190 | && gfc_match (" complex") == MATCH_YES))) | |
4191 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 4192 | { |
524af0d6 | 4193 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
4194 | return MATCH_ERROR; |
4195 | ||
4196 | if (matched_type | |
524af0d6 JB |
4197 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4198 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4199 | return MATCH_ERROR; |
4200 | ||
4201 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
0e521c64 SK |
4202 | { |
4203 | gfc_error ("Malformed type-spec at %C"); | |
4204 | return MATCH_ERROR; | |
4205 | } | |
df8652dc | 4206 | |
6de9cd9a | 4207 | ts->type = BT_COMPLEX; |
9d64df18 | 4208 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4209 | return MATCH_YES; |
4210 | } | |
4211 | ||
0fb56814 TB |
4212 | if ((matched_type && strcmp ("logical", name) == 0) |
4213 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
4214 | { |
4215 | ts->type = BT_LOGICAL; | |
9d64df18 | 4216 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
4217 | goto get_kind; |
4218 | } | |
4219 | ||
0fb56814 | 4220 | if (matched_type) |
5bab4c96 PT |
4221 | { |
4222 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4223 | if (m == MATCH_ERROR) | |
4224 | return m; | |
4225 | ||
0e521c64 SK |
4226 | gfc_gobble_whitespace (); |
4227 | if (gfc_peek_ascii_char () != ')') | |
4228 | { | |
4229 | gfc_error ("Malformed type-spec at %C"); | |
4230 | return MATCH_ERROR; | |
4231 | } | |
4232 | m = gfc_match_char (')'); /* Burn closing ')'. */ | |
5bab4c96 | 4233 | } |
0fb56814 | 4234 | |
f6288c24 FR |
4235 | if (m != MATCH_YES) |
4236 | m = match_record_decl (name); | |
4237 | ||
4238 | if (matched_type || m == MATCH_YES) | |
4239 | { | |
4240 | ts->type = BT_DERIVED; | |
4241 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4242 | * don't need all the extra derived-type stuff for structures. */ | |
4243 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4244 | { | |
2f029c08 | 4245 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
4246 | return MATCH_ERROR; |
4247 | } | |
5bab4c96 PT |
4248 | |
4249 | if (sym && sym->attr.flavor == FL_DERIVED | |
4250 | && sym->attr.pdt_template | |
4251 | && gfc_current_state () != COMP_DERIVED) | |
4252 | { | |
4253 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4254 | if (m != MATCH_YES) | |
4255 | return m; | |
4256 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4257 | ts->u.derived = sym; | |
4258 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4259 | } | |
4260 | ||
f6288c24 FR |
4261 | if (sym && sym->attr.flavor == FL_STRUCT) |
4262 | { | |
4263 | ts->u.derived = sym; | |
4264 | return MATCH_YES; | |
4265 | } | |
4266 | /* Actually a derived type. */ | |
4267 | } | |
4268 | ||
cf2b3c22 | 4269 | else |
727e8544 | 4270 | { |
f6288c24 | 4271 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 4272 | structure declaration. */ |
f6d17ecd | 4273 | if (flag_dec_structure |
e79e6763 FR |
4274 | && (gfc_current_state () == COMP_STRUCTURE |
4275 | || gfc_current_state () == COMP_MAP)) | |
4276 | { | |
4277 | m = gfc_match (" structure"); | |
4278 | if (m == MATCH_YES) | |
4279 | { | |
4280 | m = gfc_match_structure_decl (); | |
4281 | if (m == MATCH_YES) | |
4282 | { | |
4283 | /* gfc_new_block is updated by match_structure_decl. */ | |
4284 | ts->type = BT_DERIVED; | |
4285 | ts->u.derived = gfc_new_block; | |
4286 | return MATCH_YES; | |
4287 | } | |
4288 | } | |
4289 | if (m == MATCH_ERROR) | |
4290 | return MATCH_ERROR; | |
4291 | } | |
f6288c24 | 4292 | |
528622fd JW |
4293 | /* Match CLASS declarations. */ |
4294 | m = gfc_match (" class ( * )"); | |
4295 | if (m == MATCH_ERROR) | |
4296 | return MATCH_ERROR; | |
4297 | else if (m == MATCH_YES) | |
4298 | { | |
8b704316 PT |
4299 | gfc_symbol *upe; |
4300 | gfc_symtree *st; | |
4301 | ts->type = BT_CLASS; | |
f5acf0f2 | 4302 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
4303 | if (upe == NULL) |
4304 | { | |
f5acf0f2 PT |
4305 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4306 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
4307 | st->n.sym = upe; |
4308 | gfc_set_sym_referenced (upe); | |
4309 | upe->refs++; | |
4310 | upe->ts.type = BT_VOID; | |
4311 | upe->attr.unlimited_polymorphic = 1; | |
4312 | /* This is essential to force the construction of | |
4313 | unlimited polymorphic component class containers. */ | |
4314 | upe->attr.zero_comp = 1; | |
70112e2a | 4315 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 4316 | &gfc_current_locus)) |
b93d8a3f JW |
4317 | return MATCH_ERROR; |
4318 | } | |
8b704316 PT |
4319 | else |
4320 | { | |
b93d8a3f | 4321 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
4322 | st->n.sym = upe; |
4323 | upe->refs++; | |
4324 | } | |
4325 | ts->u.derived = upe; | |
4326 | return m; | |
4327 | } | |
528622fd | 4328 | |
5bab4c96 PT |
4329 | m = gfc_match (" class ("); |
4330 | ||
4331 | if (m == MATCH_YES) | |
4332 | m = gfc_match ("%n", name); | |
4333 | else | |
4334 | return m; | |
4335 | ||
727e8544 JW |
4336 | if (m != MATCH_YES) |
4337 | return m; | |
cf2b3c22 | 4338 | ts->type = BT_CLASS; |
727e8544 | 4339 | |
524af0d6 | 4340 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 4341 | return MATCH_ERROR; |
5bab4c96 PT |
4342 | |
4343 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4344 | if (m == MATCH_ERROR) | |
4345 | return m; | |
4346 | ||
4347 | m = gfc_match_char (')'); | |
4348 | if (m != MATCH_YES) | |
4349 | return m; | |
727e8544 | 4350 | } |
6de9cd9a | 4351 | |
1c8bcdf7 PT |
4352 | /* Defer association of the derived type until the end of the |
4353 | specification block. However, if the derived type can be | |
f5acf0f2 | 4354 | found, add it to the typespec. */ |
1c8bcdf7 | 4355 | if (gfc_matching_function) |
e2d29968 | 4356 | { |
bc21d315 | 4357 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4358 | if (gfc_current_state () != COMP_INTERFACE |
4359 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4360 | { |
4361 | sym = gfc_find_dt_in_generic (sym); | |
4362 | ts->u.derived = sym; | |
4363 | } | |
e2d29968 PT |
4364 | return MATCH_YES; |
4365 | } | |
4366 | ||
4367 | /* Search for the name but allow the components to be defined later. If | |
4368 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4369 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4370 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4371 | symtree with the all lower-case name contains the associated |
4372 | generic function. */ | |
f6288c24 | 4373 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4374 | sym = NULL; |
c3f34952 TB |
4375 | dt_sym = NULL; |
4376 | if (ts->kind != -1) | |
6de9cd9a | 4377 | { |
c3f34952 TB |
4378 | gfc_get_ha_symbol (name, &sym); |
4379 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4380 | { | |
c4100eae | 4381 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4382 | return MATCH_ERROR; |
4383 | } | |
4384 | if (sym->generic && !dt_sym) | |
4385 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4386 | |
4387 | /* Host associated PDTs can get confused with their constructors | |
4388 | because they ar instantiated in the template's namespace. */ | |
4389 | if (!dt_sym) | |
4390 | { | |
4391 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4392 | { | |
4393 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4394 | return MATCH_ERROR; | |
4395 | } | |
4396 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4397 | dt_sym = NULL; | |
4398 | } | |
6de9cd9a | 4399 | } |
e2d29968 PT |
4400 | else if (ts->kind == -1) |
4401 | { | |
1c8bcdf7 PT |
4402 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4403 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4404 | gfc_find_symbol (name, NULL, iface, &sym); |
4405 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4406 | { |
c4100eae | 4407 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4408 | return MATCH_ERROR; |
4409 | } | |
c3f34952 TB |
4410 | if (sym && sym->generic && !dt_sym) |
4411 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4412 | |
1c8bcdf7 | 4413 | ts->kind = 0; |
e2d29968 PT |
4414 | if (sym == NULL) |
4415 | return MATCH_NO; | |
4416 | } | |
6de9cd9a | 4417 | |
f6288c24 | 4418 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4419 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4420 | || sym->attr.subroutine) | |
4421 | { | |
fea70c99 MLI |
4422 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4423 | "entity at %L, which has the same name", name, | |
4424 | &sym->declared_at); | |
c3f34952 TB |
4425 | return MATCH_ERROR; |
4426 | } | |
6de9cd9a | 4427 | |
5bab4c96 PT |
4428 | if (sym && sym->attr.flavor == FL_DERIVED |
4429 | && sym->attr.pdt_template | |
4430 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4431 | { |
4432 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4433 | if (m != MATCH_YES) | |
4434 | return m; | |
4435 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4436 | ts->u.derived = sym; | |
4437 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4438 | } | |
5bab4c96 | 4439 | |
44c57c2f | 4440 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4441 | gfc_set_sym_referenced (sym); |
c3f34952 | 4442 | if (!sym->attr.generic |
524af0d6 | 4443 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4444 | return MATCH_ERROR; |
4445 | ||
4446 | if (!sym->attr.function | |
524af0d6 | 4447 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4448 | return MATCH_ERROR; |
4449 | ||
5bab4c96 PT |
4450 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4451 | && dt_sym->attr.pdt_template | |
4452 | && gfc_current_state () != COMP_DERIVED) | |
4453 | { | |
4454 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4455 | if (m != MATCH_YES) | |
4456 | return m; | |
4457 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4458 | } | |
4459 | ||
c3f34952 TB |
4460 | if (!dt_sym) |
4461 | { | |
4462 | gfc_interface *intr, *head; | |
4463 | ||
4464 | /* Use upper case to save the actual derived-type symbol. */ | |
4465 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4466 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4467 | head = sym->generic; |
4468 | intr = gfc_get_interface (); | |
4469 | intr->sym = dt_sym; | |
4470 | intr->where = gfc_current_locus; | |
4471 | intr->next = head; | |
4472 | sym->generic = intr; | |
4473 | sym->attr.if_source = IFSRC_DECL; | |
4474 | } | |
44c57c2f MM |
4475 | else |
4476 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4477 | |
4478 | gfc_set_sym_referenced (dt_sym); | |
4479 | ||
f6288c24 | 4480 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4481 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4482 | return MATCH_ERROR; |
4483 | ||
4484 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4485 | |
4486 | return MATCH_YES; | |
4487 | ||
4488 | get_kind: | |
0fb56814 | 4489 | if (matched_type |
524af0d6 JB |
4490 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4491 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4492 | return MATCH_ERROR; |
4493 | ||
6de9cd9a DN |
4494 | /* For all types except double, derived and character, look for an |
4495 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4496 | if (implicit_flag == 1) |
0fb56814 TB |
4497 | { |
4498 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4499 | return MATCH_ERROR; | |
4500 | ||
4501 | return MATCH_YES; | |
4502 | } | |
6de9cd9a | 4503 | |
0ff0dfbf TS |
4504 | if (gfc_current_form == FORM_FREE) |
4505 | { | |
0b3624f6 SK |
4506 | c = gfc_peek_ascii_char (); |
4507 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4508 | && c != ':' && c != ',') |
0fb56814 TB |
4509 | { |
4510 | if (matched_type && c == ')') | |
4511 | { | |
4512 | gfc_next_ascii_char (); | |
4513 | return MATCH_YES; | |
4514 | } | |
c4770ba0 | 4515 | gfc_error ("Malformed type-spec at %C"); |
0fb56814 TB |
4516 | return MATCH_NO; |
4517 | } | |
0ff0dfbf TS |
4518 | } |
4519 | ||
e2d29968 | 4520 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4521 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4522 | { |
4523 | m = gfc_match_old_kind_spec (ts); | |
4524 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4525 | return MATCH_ERROR; | |
4526 | } | |
6de9cd9a | 4527 | |
0fb56814 | 4528 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
c4770ba0 SK |
4529 | { |
4530 | gfc_error ("Malformed type-spec at %C"); | |
4531 | return MATCH_ERROR; | |
4532 | } | |
0fb56814 | 4533 | |
1c8bcdf7 PT |
4534 | /* Defer association of the KIND expression of function results |
4535 | until after USE and IMPORT statements. */ | |
4536 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4537 | || gfc_matching_function) | |
4538 | return MATCH_YES; | |
4539 | ||
6de9cd9a DN |
4540 | if (m == MATCH_NO) |
4541 | m = MATCH_YES; /* No kind specifier found. */ | |
4542 | ||
4543 | return m; | |
4544 | } | |
4545 | ||
4546 | ||
e5ddaa24 TS |
4547 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4548 | already matched in parse.c, or we would not end up here in the | |
4549 | first place. So the only thing we need to check, is if there is | |
4550 | trailing garbage. If not, the match is successful. */ | |
4551 | ||
4552 | match | |
4553 | gfc_match_implicit_none (void) | |
4554 | { | |
8b7a967e TB |
4555 | char c; |
4556 | match m; | |
4557 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4558 | bool type = false; | |
4559 | bool external = false; | |
a6c63173 TB |
4560 | locus cur_loc = gfc_current_locus; |
4561 | ||
4562 | if (gfc_current_ns->seen_implicit_none | |
4563 | || gfc_current_ns->has_implicit_none_export) | |
4564 | { | |
4565 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4566 | return MATCH_ERROR; | |
4567 | } | |
8b7a967e TB |
4568 | |
4569 | gfc_gobble_whitespace (); | |
4570 | c = gfc_peek_ascii_char (); | |
4571 | if (c == '(') | |
4572 | { | |
4573 | (void) gfc_next_ascii_char (); | |
8179b067 | 4574 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4575 | return MATCH_ERROR; |
a6c63173 TB |
4576 | |
4577 | gfc_gobble_whitespace (); | |
4578 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4579 | { |
a6c63173 TB |
4580 | (void) gfc_next_ascii_char (); |
4581 | type = true; | |
4582 | } | |
4583 | else | |
4584 | for(;;) | |
4585 | { | |
4586 | m = gfc_match (" %n", name); | |
4587 | if (m != MATCH_YES) | |
4588 | return MATCH_ERROR; | |
8b7a967e | 4589 | |
a6c63173 TB |
4590 | if (strcmp (name, "type") == 0) |
4591 | type = true; | |
4592 | else if (strcmp (name, "external") == 0) | |
4593 | external = true; | |
4594 | else | |
4595 | return MATCH_ERROR; | |
8b7a967e | 4596 | |
a6c63173 TB |
4597 | gfc_gobble_whitespace (); |
4598 | c = gfc_next_ascii_char (); | |
4599 | if (c == ',') | |
4600 | continue; | |
4601 | if (c == ')') | |
4602 | break; | |
4603 | return MATCH_ERROR; | |
4604 | } | |
8b7a967e TB |
4605 | } |
4606 | else | |
4607 | type = true; | |
4608 | ||
4609 | if (gfc_match_eos () != MATCH_YES) | |
4610 | return MATCH_ERROR; | |
4611 | ||
a6c63173 | 4612 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4613 | |
4614 | return MATCH_YES; | |
e5ddaa24 TS |
4615 | } |
4616 | ||
4617 | ||
4618 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4619 | ||
4620 | static match | |
1107b970 | 4621 | match_implicit_range (void) |
e5ddaa24 | 4622 | { |
8fc541d3 FXC |
4623 | char c, c1, c2; |
4624 | int inner; | |
e5ddaa24 TS |
4625 | locus cur_loc; |
4626 | ||
4627 | cur_loc = gfc_current_locus; | |
4628 | ||
4629 | gfc_gobble_whitespace (); | |
8fc541d3 | 4630 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4631 | if (c != '(') |
4632 | { | |
4633 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4634 | goto bad; | |
4635 | } | |
4636 | ||
4637 | inner = 1; | |
4638 | while (inner) | |
4639 | { | |
4640 | gfc_gobble_whitespace (); | |
8fc541d3 | 4641 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4642 | if (!ISALPHA (c1)) |
4643 | goto bad; | |
4644 | ||
4645 | gfc_gobble_whitespace (); | |
8fc541d3 | 4646 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4647 | |
4648 | switch (c) | |
4649 | { | |
4650 | case ')': | |
66e4ab31 | 4651 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4652 | |
4653 | case ',': | |
4654 | c2 = c1; | |
4655 | break; | |
4656 | ||
4657 | case '-': | |
4658 | gfc_gobble_whitespace (); | |
8fc541d3 | 4659 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4660 | if (!ISALPHA (c2)) |
4661 | goto bad; | |
4662 | ||
4663 | gfc_gobble_whitespace (); | |
8fc541d3 | 4664 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4665 | |
4666 | if ((c != ',') && (c != ')')) | |
4667 | goto bad; | |
4668 | if (c == ')') | |
4669 | inner = 0; | |
4670 | ||
4671 | break; | |
4672 | ||
4673 | default: | |
4674 | goto bad; | |
4675 | } | |
4676 | ||
4677 | if (c1 > c2) | |
4678 | { | |
4679 | gfc_error ("Letters must be in alphabetic order in " | |
4680 | "IMPLICIT statement at %C"); | |
4681 | goto bad; | |
4682 | } | |
4683 | ||
4684 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4685 | implicits from this IMPLICIT statement. We do not check for |
4686 | conflicts with whatever earlier IMPLICIT statements may have | |
4687 | set. This is done when we've successfully finished matching | |
4688 | the current one. */ | |
524af0d6 | 4689 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4690 | goto bad; |
4691 | } | |
4692 | ||
4693 | return MATCH_YES; | |
4694 | ||
4695 | bad: | |
4696 | gfc_syntax_error (ST_IMPLICIT); | |
4697 | ||
4698 | gfc_current_locus = cur_loc; | |
4699 | return MATCH_ERROR; | |
4700 | } | |
4701 | ||
4702 | ||
4703 | /* Match an IMPLICIT statement, storing the types for | |
4704 | gfc_set_implicit() if the statement is accepted by the parser. | |
4705 | There is a strange looking, but legal syntactic construction | |
4706 | possible. It looks like: | |
4707 | ||
4708 | IMPLICIT INTEGER (a-b) (c-d) | |
4709 | ||
4710 | This is legal if "a-b" is a constant expression that happens to | |
4711 | equal one of the legal kinds for integers. The real problem | |
4712 | happens with an implicit specification that looks like: | |
4713 | ||
4714 | IMPLICIT INTEGER (a-b) | |
4715 | ||
4716 | In this case, a typespec matcher that is "greedy" (as most of the | |
4717 | matchers are) gobbles the character range as a kindspec, leaving | |
4718 | nothing left. We therefore have to go a bit more slowly in the | |
4719 | matching process by inhibiting the kindspec checking during | |
4720 | typespec matching and checking for a kind later. */ | |
4721 | ||
4722 | match | |
4723 | gfc_match_implicit (void) | |
4724 | { | |
4725 | gfc_typespec ts; | |
4726 | locus cur_loc; | |
8fc541d3 | 4727 | char c; |
e5ddaa24 TS |
4728 | match m; |
4729 | ||
8b7a967e TB |
4730 | if (gfc_current_ns->seen_implicit_none) |
4731 | { | |
4732 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4733 | "statement"); | |
4734 | return MATCH_ERROR; | |
4735 | } | |
4736 | ||
44000dbb JD |
4737 | gfc_clear_ts (&ts); |
4738 | ||
e5ddaa24 TS |
4739 | /* We don't allow empty implicit statements. */ |
4740 | if (gfc_match_eos () == MATCH_YES) | |
4741 | { | |
4742 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4743 | return MATCH_ERROR; | |
4744 | } | |
4745 | ||
e5ddaa24 TS |
4746 | do |
4747 | { | |
1107b970 PB |
4748 | /* First cleanup. */ |
4749 | gfc_clear_new_implicit (); | |
4750 | ||
e5ddaa24 | 4751 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4752 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4753 | if (m == MATCH_ERROR) |
4754 | goto error; | |
4755 | if (m == MATCH_NO) | |
4756 | goto syntax; | |
4757 | ||
4758 | cur_loc = gfc_current_locus; | |
1107b970 | 4759 | m = match_implicit_range (); |
e5ddaa24 TS |
4760 | |
4761 | if (m == MATCH_YES) | |
4762 | { | |
1107b970 | 4763 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4764 | gfc_gobble_whitespace (); |
a6c63173 TB |
4765 | c = gfc_peek_ascii_char (); |
4766 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4767 | { |
4768 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4769 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4770 | { |
9d64df18 | 4771 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4772 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4773 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4774 | NULL, 1); |
1107b970 PB |
4775 | } |
4776 | ||
4777 | /* Record the Successful match. */ | |
524af0d6 | 4778 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4779 | return MATCH_ERROR; |
a6c63173 TB |
4780 | if (c == ',') |
4781 | c = gfc_next_ascii_char (); | |
4782 | else if (gfc_match_eos () == MATCH_ERROR) | |
4783 | goto error; | |
1107b970 PB |
4784 | continue; |
4785 | } | |
e5ddaa24 TS |
4786 | |
4787 | gfc_current_locus = cur_loc; | |
4788 | } | |
4789 | ||
1107b970 PB |
4790 | /* Discard the (incorrectly) matched range. */ |
4791 | gfc_clear_new_implicit (); | |
4792 | ||
4793 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4794 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4795 | m = gfc_match_char_spec (&ts); |
1107b970 | 4796 | else |
e5ddaa24 | 4797 | { |
e2d29968 | 4798 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4799 | if (m == MATCH_NO) |
1107b970 PB |
4800 | { |
4801 | m = gfc_match_old_kind_spec (&ts); | |
4802 | if (m == MATCH_ERROR) | |
4803 | goto error; | |
4804 | if (m == MATCH_NO) | |
4805 | goto syntax; | |
4806 | } | |
e5ddaa24 | 4807 | } |
1107b970 PB |
4808 | if (m == MATCH_ERROR) |
4809 | goto error; | |
e5ddaa24 | 4810 | |
1107b970 | 4811 | m = match_implicit_range (); |
e5ddaa24 TS |
4812 | if (m == MATCH_ERROR) |
4813 | goto error; | |
4814 | if (m == MATCH_NO) | |
4815 | goto syntax; | |
4816 | ||
4817 | gfc_gobble_whitespace (); | |
8fc541d3 | 4818 | c = gfc_next_ascii_char (); |
a6c63173 | 4819 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4820 | goto syntax; |
4821 | ||
524af0d6 | 4822 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4823 | return MATCH_ERROR; |
e5ddaa24 TS |
4824 | } |
4825 | while (c == ','); | |
4826 | ||
1107b970 | 4827 | return MATCH_YES; |
e5ddaa24 TS |
4828 | |
4829 | syntax: | |
4830 | gfc_syntax_error (ST_IMPLICIT); | |
4831 | ||
4832 | error: | |
4833 | return MATCH_ERROR; | |
4834 | } | |
4835 | ||
66e4ab31 | 4836 | |
8998be20 TB |
4837 | match |
4838 | gfc_match_import (void) | |
4839 | { | |
4840 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4841 | match m; | |
4842 | gfc_symbol *sym; | |
4843 | gfc_symtree *st; | |
4844 | ||
66e4ab31 SK |
4845 | if (gfc_current_ns->proc_name == NULL |
4846 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4847 | { |
4848 | gfc_error ("IMPORT statement at %C only permitted in " | |
4849 | "an INTERFACE body"); | |
4850 | return MATCH_ERROR; | |
4851 | } | |
4852 | ||
4668d6f9 PT |
4853 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4854 | { | |
4855 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4856 | "in a module procedure interface body"); | |
4857 | return MATCH_ERROR; | |
4858 | } | |
4859 | ||
524af0d6 | 4860 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4861 | return MATCH_ERROR; |
4862 | ||
4863 | if (gfc_match_eos () == MATCH_YES) | |
4864 | { | |
4865 | /* All host variables should be imported. */ | |
4866 | gfc_current_ns->has_import_set = 1; | |
4867 | return MATCH_YES; | |
4868 | } | |
4869 | ||
4870 | if (gfc_match (" ::") == MATCH_YES) | |
4871 | { | |
4872 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4873 | { |
4874 | gfc_error ("Expecting list of named entities at %C"); | |
4875 | return MATCH_ERROR; | |
4876 | } | |
8998be20 TB |
4877 | } |
4878 | ||
4879 | for(;;) | |
4880 | { | |
2e8d9212 | 4881 | sym = NULL; |
8998be20 TB |
4882 | m = gfc_match (" %n", name); |
4883 | switch (m) | |
4884 | { | |
4885 | case MATCH_YES: | |
36d3fb4c | 4886 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4887 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4888 | { |
c4100eae | 4889 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4890 | return MATCH_ERROR; |
4891 | } | |
4e2cf5f5 | 4892 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4893 | && gfc_find_symbol (name, |
4894 | gfc_current_ns->proc_name->ns->parent, | |
4895 | 1, &sym)) | |
636dff67 | 4896 | { |
c4100eae | 4897 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4898 | return MATCH_ERROR; |
4899 | } | |
4900 | ||
4901 | if (sym == NULL) | |
4902 | { | |
c4100eae | 4903 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4904 | "at %C - does not exist.", name); |
4905 | return MATCH_ERROR; | |
4906 | } | |
4907 | ||
dd8b9dde | 4908 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4909 | { |
db30e21c | 4910 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4911 | "at %C", name); |
636dff67 SK |
4912 | goto next_item; |
4913 | } | |
4914 | ||
dd8b9dde | 4915 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4916 | st->n.sym = sym; |
4917 | sym->refs++; | |
5a8af0b4 | 4918 | sym->attr.imported = 1; |
8998be20 | 4919 | |
c3f34952 TB |
4920 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4921 | { | |
4922 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4923 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4924 | lower-case name contains the associated generic function. */ |
c3f34952 | 4925 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4926 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4927 | st->n.sym = sym; |
4928 | sym->refs++; | |
4929 | sym->attr.imported = 1; | |
4930 | } | |
4931 | ||
8998be20 TB |
4932 | goto next_item; |
4933 | ||
4934 | case MATCH_NO: | |
4935 | break; | |
4936 | ||
4937 | case MATCH_ERROR: | |
4938 | return MATCH_ERROR; | |
4939 | } | |
4940 | ||
4941 | next_item: | |
4942 | if (gfc_match_eos () == MATCH_YES) | |
4943 | break; | |
4944 | if (gfc_match_char (',') != MATCH_YES) | |
4945 | goto syntax; | |
4946 | } | |
4947 | ||
4948 | return MATCH_YES; | |
4949 | ||
4950 | syntax: | |
4951 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4952 | return MATCH_ERROR; | |
4953 | } | |
e5ddaa24 | 4954 | |
66e4ab31 | 4955 | |
f2449db4 RS |
4956 | /* A minimal implementation of gfc_match without whitespace, escape |
4957 | characters or variable arguments. Returns true if the next | |
4958 | characters match the TARGET template exactly. */ | |
4959 | ||
4960 | static bool | |
4961 | match_string_p (const char *target) | |
4962 | { | |
4963 | const char *p; | |
4964 | ||
4965 | for (p = target; *p; p++) | |
8fc541d3 | 4966 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4967 | return false; |
4968 | return true; | |
4969 | } | |
4970 | ||
6de9cd9a DN |
4971 | /* Matches an attribute specification including array specs. If |
4972 | successful, leaves the variables current_attr and current_as | |
4973 | holding the specification. Also sets the colon_seen variable for | |
4974 | later use by matchers associated with initializations. | |
4975 | ||
4976 | This subroutine is a little tricky in the sense that we don't know | |
4977 | if we really have an attr-spec until we hit the double colon. | |
4978 | Until that time, we can only return MATCH_NO. This forces us to | |
4979 | check for duplicate specification at this level. */ | |
4980 | ||
4981 | static match | |
4982 | match_attr_spec (void) | |
4983 | { | |
6de9cd9a | 4984 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4985 | enum |
ea20e8be JW |
4986 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4987 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4988 | DECL_DIMENSION, DECL_EXTERNAL, | |
4989 | DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4990 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4991 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4992 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4993 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4994 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4995 | }; |
6de9cd9a DN |
4996 | |
4997 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4998 | #define NUM_DECL GFC_DECL_END | |
4999 | ||
ea20e8be JW |
5000 | /* Make sure that values from sym_intent are safe to be used here. */ |
5001 | gcc_assert (INTENT_IN > 0); | |
5002 | ||
6de9cd9a DN |
5003 | locus start, seen_at[NUM_DECL]; |
5004 | int seen[NUM_DECL]; | |
09639a83 | 5005 | unsigned int d; |
6de9cd9a DN |
5006 | const char *attr; |
5007 | match m; | |
524af0d6 | 5008 | bool t; |
6de9cd9a DN |
5009 | |
5010 | gfc_clear_attr (¤t_attr); | |
63645982 | 5011 | start = gfc_current_locus; |
6de9cd9a DN |
5012 | |
5013 | current_as = NULL; | |
5014 | colon_seen = 0; | |
6f855a26 | 5015 | attr_seen = 0; |
6de9cd9a DN |
5016 | |
5017 | /* See if we get all of the keywords up to the final double colon. */ | |
5018 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5019 | seen[d] = 0; | |
5020 | ||
5021 | for (;;) | |
5022 | { | |
8fc541d3 | 5023 | char ch; |
a8b3b0b6 | 5024 | |
f2449db4 RS |
5025 | d = DECL_NONE; |
5026 | gfc_gobble_whitespace (); | |
5027 | ||
8fc541d3 | 5028 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5029 | if (ch == ':') |
5030 | { | |
5031 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 5032 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
5033 | break; |
5034 | } | |
5035 | else if (ch == ',') | |
a8b3b0b6 | 5036 | { |
a8b3b0b6 | 5037 | gfc_gobble_whitespace (); |
8fc541d3 | 5038 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 5039 | { |
f2449db4 | 5040 | case 'a': |
1eee5628 TB |
5041 | gfc_next_ascii_char (); |
5042 | switch (gfc_next_ascii_char ()) | |
5043 | { | |
5044 | case 'l': | |
5045 | if (match_string_p ("locatable")) | |
5046 | { | |
5047 | /* Matched "allocatable". */ | |
5048 | d = DECL_ALLOCATABLE; | |
5049 | } | |
5050 | break; | |
5051 | ||
5052 | case 's': | |
5053 | if (match_string_p ("ynchronous")) | |
5054 | { | |
5055 | /* Matched "asynchronous". */ | |
5056 | d = DECL_ASYNCHRONOUS; | |
5057 | } | |
5058 | break; | |
34d567d1 FR |
5059 | |
5060 | case 'u': | |
5061 | if (match_string_p ("tomatic")) | |
5062 | { | |
5063 | /* Matched "automatic". */ | |
5064 | d = DECL_AUTOMATIC; | |
5065 | } | |
5066 | break; | |
1eee5628 | 5067 | } |
fe4e525c | 5068 | break; |
f2449db4 RS |
5069 | |
5070 | case 'b': | |
a8b3b0b6 | 5071 | /* Try and match the bind(c). */ |
1eabf70a | 5072 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 5073 | if (m == MATCH_YES) |
a8b3b0b6 | 5074 | d = DECL_IS_BIND_C; |
129d15a3 JW |
5075 | else if (m == MATCH_ERROR) |
5076 | goto cleanup; | |
f2449db4 RS |
5077 | break; |
5078 | ||
be59db2d | 5079 | case 'c': |
fe4e525c TB |
5080 | gfc_next_ascii_char (); |
5081 | if ('o' != gfc_next_ascii_char ()) | |
5082 | break; | |
5083 | switch (gfc_next_ascii_char ()) | |
5084 | { | |
5085 | case 'd': | |
5086 | if (match_string_p ("imension")) | |
5087 | { | |
5088 | d = DECL_CODIMENSION; | |
5089 | break; | |
5090 | } | |
191816a3 | 5091 | /* FALLTHRU */ |
fe4e525c TB |
5092 | case 'n': |
5093 | if (match_string_p ("tiguous")) | |
5094 | { | |
5095 | d = DECL_CONTIGUOUS; | |
5096 | break; | |
5097 | } | |
5098 | } | |
be59db2d TB |
5099 | break; |
5100 | ||
f2449db4 RS |
5101 | case 'd': |
5102 | if (match_string_p ("dimension")) | |
5103 | d = DECL_DIMENSION; | |
5104 | break; | |
5105 | ||
5106 | case 'e': | |
5107 | if (match_string_p ("external")) | |
5108 | d = DECL_EXTERNAL; | |
5109 | break; | |
5110 | ||
5111 | case 'i': | |
5112 | if (match_string_p ("int")) | |
5113 | { | |
8fc541d3 | 5114 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5115 | if (ch == 'e') |
5116 | { | |
5117 | if (match_string_p ("nt")) | |
5118 | { | |
5119 | /* Matched "intent". */ | |
ea20e8be JW |
5120 | d = match_intent_spec (); |
5121 | if (d == INTENT_UNKNOWN) | |
5122 | { | |
5123 | m = MATCH_ERROR; | |
5124 | goto cleanup; | |
5125 | } | |
f2449db4 RS |
5126 | } |
5127 | } | |
5128 | else if (ch == 'r') | |
5129 | { | |
5130 | if (match_string_p ("insic")) | |
5131 | { | |
5132 | /* Matched "intrinsic". */ | |
5133 | d = DECL_INTRINSIC; | |
5134 | } | |
5135 | } | |
5136 | } | |
5137 | break; | |
5138 | ||
5bab4c96 PT |
5139 | case 'k': |
5140 | if (match_string_p ("kind")) | |
5141 | d = DECL_KIND; | |
5142 | break; | |
5143 | ||
5144 | case 'l': | |
5145 | if (match_string_p ("len")) | |
5146 | d = DECL_LEN; | |
5147 | break; | |
5148 | ||
f2449db4 RS |
5149 | case 'o': |
5150 | if (match_string_p ("optional")) | |
5151 | d = DECL_OPTIONAL; | |
5152 | break; | |
5153 | ||
5154 | case 'p': | |
8fc541d3 FXC |
5155 | gfc_next_ascii_char (); |
5156 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
5157 | { |
5158 | case 'a': | |
5159 | if (match_string_p ("rameter")) | |
5160 | { | |
5161 | /* Matched "parameter". */ | |
5162 | d = DECL_PARAMETER; | |
5163 | } | |
5164 | break; | |
5165 | ||
5166 | case 'o': | |
5167 | if (match_string_p ("inter")) | |
5168 | { | |
5169 | /* Matched "pointer". */ | |
5170 | d = DECL_POINTER; | |
5171 | } | |
5172 | break; | |
5173 | ||
5174 | case 'r': | |
8fc541d3 | 5175 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5176 | if (ch == 'i') |
5177 | { | |
5178 | if (match_string_p ("vate")) | |
5179 | { | |
5180 | /* Matched "private". */ | |
5181 | d = DECL_PRIVATE; | |
5182 | } | |
5183 | } | |
5184 | else if (ch == 'o') | |
5185 | { | |
5186 | if (match_string_p ("tected")) | |
5187 | { | |
5188 | /* Matched "protected". */ | |
5189 | d = DECL_PROTECTED; | |
5190 | } | |
5191 | } | |
5192 | break; | |
5193 | ||
5194 | case 'u': | |
5195 | if (match_string_p ("blic")) | |
5196 | { | |
5197 | /* Matched "public". */ | |
5198 | d = DECL_PUBLIC; | |
5199 | } | |
5200 | break; | |
5201 | } | |
5202 | break; | |
5203 | ||
5204 | case 's': | |
34d567d1 FR |
5205 | gfc_next_ascii_char (); |
5206 | switch (gfc_next_ascii_char ()) | |
5207 | { | |
5208 | case 'a': | |
5209 | if (match_string_p ("ve")) | |
5210 | { | |
5211 | /* Matched "save". */ | |
5212 | d = DECL_SAVE; | |
5213 | } | |
5214 | break; | |
5215 | ||
5216 | case 't': | |
5217 | if (match_string_p ("atic")) | |
5218 | { | |
5219 | /* Matched "static". */ | |
5220 | d = DECL_STATIC; | |
5221 | } | |
5222 | break; | |
5223 | } | |
f2449db4 RS |
5224 | break; |
5225 | ||
5226 | case 't': | |
5227 | if (match_string_p ("target")) | |
5228 | d = DECL_TARGET; | |
5229 | break; | |
5230 | ||
5231 | case 'v': | |
8fc541d3 FXC |
5232 | gfc_next_ascii_char (); |
5233 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
5234 | if (ch == 'a') |
5235 | { | |
5236 | if (match_string_p ("lue")) | |
5237 | { | |
5238 | /* Matched "value". */ | |
5239 | d = DECL_VALUE; | |
5240 | } | |
5241 | } | |
5242 | else if (ch == 'o') | |
5243 | { | |
5244 | if (match_string_p ("latile")) | |
5245 | { | |
5246 | /* Matched "volatile". */ | |
5247 | d = DECL_VOLATILE; | |
5248 | } | |
5249 | } | |
5250 | break; | |
a8b3b0b6 CR |
5251 | } |
5252 | } | |
d468bcdb | 5253 | |
f2449db4 RS |
5254 | /* No double colon and no recognizable decl_type, so assume that |
5255 | we've been looking at something else the whole time. */ | |
5256 | if (d == DECL_NONE) | |
5257 | { | |
5258 | m = MATCH_NO; | |
5259 | goto cleanup; | |
5260 | } | |
d51347f9 | 5261 | |
acb388a0 JD |
5262 | /* Check to make sure any parens are paired up correctly. */ |
5263 | if (gfc_match_parens () == MATCH_ERROR) | |
5264 | { | |
5265 | m = MATCH_ERROR; | |
5266 | goto cleanup; | |
5267 | } | |
5268 | ||
6de9cd9a | 5269 | seen[d]++; |
63645982 | 5270 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 5271 | |
d3a9eea2 | 5272 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 5273 | { |
d3a9eea2 | 5274 | gfc_array_spec *as = NULL; |
6de9cd9a | 5275 | |
d3a9eea2 TB |
5276 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5277 | d == DECL_CODIMENSION); | |
5278 | ||
5279 | if (current_as == NULL) | |
5280 | current_as = as; | |
5281 | else if (m == MATCH_YES) | |
6de9cd9a | 5282 | { |
524af0d6 | 5283 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 5284 | m = MATCH_ERROR; |
cede9502 | 5285 | free (as); |
6de9cd9a DN |
5286 | } |
5287 | ||
be59db2d TB |
5288 | if (m == MATCH_NO) |
5289 | { | |
d3a9eea2 TB |
5290 | if (d == DECL_CODIMENSION) |
5291 | gfc_error ("Missing codimension specification at %C"); | |
5292 | else | |
5293 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
5294 | m = MATCH_ERROR; |
5295 | } | |
5296 | ||
5297 | if (m == MATCH_ERROR) | |
5298 | goto cleanup; | |
5299 | } | |
6de9cd9a DN |
5300 | } |
5301 | ||
6de9cd9a DN |
5302 | /* Since we've seen a double colon, we have to be looking at an |
5303 | attr-spec. This means that we can now issue errors. */ | |
5304 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5305 | if (seen[d] > 1) | |
5306 | { | |
5307 | switch (d) | |
5308 | { | |
5309 | case DECL_ALLOCATABLE: | |
5310 | attr = "ALLOCATABLE"; | |
5311 | break; | |
1eee5628 TB |
5312 | case DECL_ASYNCHRONOUS: |
5313 | attr = "ASYNCHRONOUS"; | |
5314 | break; | |
be59db2d TB |
5315 | case DECL_CODIMENSION: |
5316 | attr = "CODIMENSION"; | |
5317 | break; | |
fe4e525c TB |
5318 | case DECL_CONTIGUOUS: |
5319 | attr = "CONTIGUOUS"; | |
5320 | break; | |
6de9cd9a DN |
5321 | case DECL_DIMENSION: |
5322 | attr = "DIMENSION"; | |
5323 | break; | |
5324 | case DECL_EXTERNAL: | |
5325 | attr = "EXTERNAL"; | |
5326 | break; | |
5327 | case DECL_IN: | |
5328 | attr = "INTENT (IN)"; | |
5329 | break; | |
5330 | case DECL_OUT: | |
5331 | attr = "INTENT (OUT)"; | |
5332 | break; | |
5333 | case DECL_INOUT: | |
5334 | attr = "INTENT (IN OUT)"; | |
5335 | break; | |
5336 | case DECL_INTRINSIC: | |
5337 | attr = "INTRINSIC"; | |
5338 | break; | |
5339 | case DECL_OPTIONAL: | |
5340 | attr = "OPTIONAL"; | |
5341 | break; | |
5bab4c96 PT |
5342 | case DECL_KIND: |
5343 | attr = "KIND"; | |
5344 | break; | |
5345 | case DECL_LEN: | |
5346 | attr = "LEN"; | |
5347 | break; | |
6de9cd9a DN |
5348 | case DECL_PARAMETER: |
5349 | attr = "PARAMETER"; | |
5350 | break; | |
5351 | case DECL_POINTER: | |
5352 | attr = "POINTER"; | |
5353 | break; | |
ee7e677f TB |
5354 | case DECL_PROTECTED: |
5355 | attr = "PROTECTED"; | |
5356 | break; | |
6de9cd9a DN |
5357 | case DECL_PRIVATE: |
5358 | attr = "PRIVATE"; | |
5359 | break; | |
5360 | case DECL_PUBLIC: | |
5361 | attr = "PUBLIC"; | |
5362 | break; | |
5363 | case DECL_SAVE: | |
5364 | attr = "SAVE"; | |
5365 | break; | |
34d567d1 FR |
5366 | case DECL_STATIC: |
5367 | attr = "STATIC"; | |
5368 | break; | |
5369 | case DECL_AUTOMATIC: | |
5370 | attr = "AUTOMATIC"; | |
5371 | break; | |
6de9cd9a DN |
5372 | case DECL_TARGET: |
5373 | attr = "TARGET"; | |
5374 | break; | |
a8b3b0b6 CR |
5375 | case DECL_IS_BIND_C: |
5376 | attr = "IS_BIND_C"; | |
5377 | break; | |
5378 | case DECL_VALUE: | |
5379 | attr = "VALUE"; | |
5380 | break; | |
775e6c3a TB |
5381 | case DECL_VOLATILE: |
5382 | attr = "VOLATILE"; | |
5383 | break; | |
6de9cd9a | 5384 | default: |
66e4ab31 | 5385 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5386 | } |
5387 | ||
5388 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5389 | m = MATCH_ERROR; | |
5390 | goto cleanup; | |
5391 | } | |
5392 | ||
5393 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5394 | to the current attribute. */ | |
5395 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5396 | { | |
5397 | if (seen[d] == 0) | |
5398 | continue; | |
6f855a26 FR |
5399 | else |
5400 | attr_seen = 1; | |
6de9cd9a | 5401 | |
34d567d1 FR |
5402 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5403 | && !flag_dec_static) | |
5404 | { | |
cf004230 FR |
5405 | gfc_error ("%s at %L is a DEC extension, enable with " |
5406 | "%<-fdec-static%>", | |
34d567d1 FR |
5407 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5408 | m = MATCH_ERROR; | |
5409 | goto cleanup; | |
5410 | } | |
5411 | /* Allow SAVE with STATIC, but don't complain. */ | |
5412 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5413 | continue; | |
5414 | ||
0cd74f35 | 5415 | if (gfc_comp_struct (gfc_current_state ()) |
be59db2d TB |
5416 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5417 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5418 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5419 | { |
0cd74f35 | 5420 | bool is_derived = gfc_current_state () == COMP_DERIVED; |
5046aff5 PT |
5421 | if (d == DECL_ALLOCATABLE) |
5422 | { | |
0cd74f35 FR |
5423 | if (!gfc_notify_std (GFC_STD_F2003, is_derived |
5424 | ? G_("ALLOCATABLE attribute at %C in a " | |
5425 | "TYPE definition") | |
5426 | : G_("ALLOCATABLE attribute at %C in a " | |
5427 | "STRUCTURE definition"))) | |
5046aff5 PT |
5428 | { |
5429 | m = MATCH_ERROR; | |
5430 | goto cleanup; | |
5431 | } | |
636dff67 | 5432 | } |
5bab4c96 PT |
5433 | else if (d == DECL_KIND) |
5434 | { | |
0cd74f35 FR |
5435 | if (!gfc_notify_std (GFC_STD_F2003, is_derived |
5436 | ? G_("KIND attribute at %C in a " | |
5437 | "TYPE definition") | |
5438 | : G_("KIND attribute at %C in a " | |
5439 | "STRUCTURE definition"))) | |
5bab4c96 PT |
5440 | { |
5441 | m = MATCH_ERROR; | |
5442 | goto cleanup; | |
5443 | } | |
5444 | if (current_ts.type != BT_INTEGER) | |
5445 | { | |
5446 | gfc_error ("Component with KIND attribute at %C must be " | |
5447 | "INTEGER"); | |
5448 | m = MATCH_ERROR; | |
5449 | goto cleanup; | |
5450 | } | |
5451 | if (current_ts.kind != gfc_default_integer_kind) | |
5452 | { | |
5453 | gfc_error ("Component with KIND attribute at %C must be " | |
5454 | "default integer kind (%d)", | |
5455 | gfc_default_integer_kind); | |
5456 | m = MATCH_ERROR; | |
5457 | goto cleanup; | |
5458 | } | |
5459 | } | |
5460 | else if (d == DECL_LEN) | |
5461 | { | |
0cd74f35 FR |
5462 | if (!gfc_notify_std (GFC_STD_F2003, is_derived |
5463 | ? G_("LEN attribute at %C in a " | |
5464 | "TYPE definition") | |
5465 | : G_("LEN attribute at %C in a " | |
5466 | "STRUCTURE definition"))) | |
5bab4c96 PT |
5467 | { |
5468 | m = MATCH_ERROR; | |
5469 | goto cleanup; | |
5470 | } | |
5471 | if (current_ts.type != BT_INTEGER) | |
5472 | { | |
5473 | gfc_error ("Component with LEN attribute at %C must be " | |
5474 | "INTEGER"); | |
5475 | m = MATCH_ERROR; | |
5476 | goto cleanup; | |
5477 | } | |
5478 | if (current_ts.kind != gfc_default_integer_kind) | |
5479 | { | |
5480 | gfc_error ("Component with LEN attribute at %C must be " | |
5481 | "default integer kind (%d)", | |
5482 | gfc_default_integer_kind); | |
5483 | m = MATCH_ERROR; | |
5484 | goto cleanup; | |
5485 | } | |
5486 | } | |
636dff67 | 5487 | else |
5046aff5 | 5488 | { |
0cd74f35 FR |
5489 | gfc_error (is_derived ? G_("Attribute at %L is not allowed in a " |
5490 | "TYPE definition") | |
5491 | : G_("Attribute at %L is not allowed in a " | |
5492 | "STRUCTURE definition"), &seen_at[d]); | |
5046aff5 PT |
5493 | m = MATCH_ERROR; |
5494 | goto cleanup; | |
5495 | } | |
6de9cd9a DN |
5496 | } |
5497 | ||
4213f93b | 5498 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5499 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5500 | { |
5501 | if (d == DECL_PRIVATE) | |
5502 | attr = "PRIVATE"; | |
5503 | else | |
5504 | attr = "PUBLIC"; | |
d51347f9 TB |
5505 | if (gfc_current_state () == COMP_DERIVED |
5506 | && gfc_state_stack->previous | |
5507 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5508 | { | |
524af0d6 | 5509 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5510 | "at %L in a TYPE definition", attr, |
524af0d6 | 5511 | &seen_at[d])) |
d51347f9 TB |
5512 | { |
5513 | m = MATCH_ERROR; | |
5514 | goto cleanup; | |
5515 | } | |
5516 | } | |
5517 | else | |
5518 | { | |
5519 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5520 | "specification part of a module", attr, &seen_at[d]); | |
5521 | m = MATCH_ERROR; | |
5522 | goto cleanup; | |
5523 | } | |
4213f93b PT |
5524 | } |
5525 | ||
5bab4c96 PT |
5526 | if (gfc_current_state () != COMP_DERIVED |
5527 | && (d == DECL_KIND || d == DECL_LEN)) | |
5528 | { | |
5529 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5530 | "definition", &seen_at[d]); | |
5531 | m = MATCH_ERROR; | |
5532 | goto cleanup; | |
5533 | } | |
5534 | ||
6de9cd9a DN |
5535 | switch (d) |
5536 | { | |
5537 | case DECL_ALLOCATABLE: | |
5538 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5539 | break; | |
5540 | ||
1eee5628 | 5541 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5542 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5543 | t = false; | |
1eee5628 TB |
5544 | else |
5545 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5546 | break; | |
5547 | ||
be59db2d TB |
5548 | case DECL_CODIMENSION: |
5549 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5550 | break; | |
5551 | ||
fe4e525c | 5552 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5553 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5554 | t = false; | |
fe4e525c TB |
5555 | else |
5556 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5557 | break; | |
5558 | ||
6de9cd9a | 5559 | case DECL_DIMENSION: |
231b2fcc | 5560 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5561 | break; |
5562 | ||
5563 | case DECL_EXTERNAL: | |
5564 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5565 | break; | |
5566 | ||
5567 | case DECL_IN: | |
5568 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5569 | break; | |
5570 | ||
5571 | case DECL_OUT: | |
5572 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5573 | break; | |
5574 | ||
5575 | case DECL_INOUT: | |
5576 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5577 | break; | |
5578 | ||
5579 | case DECL_INTRINSIC: | |
5580 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5581 | break; | |
5582 | ||
5583 | case DECL_OPTIONAL: | |
5584 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5585 | break; | |
5586 | ||
5bab4c96 PT |
5587 | case DECL_KIND: |
5588 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5589 | break; | |
5590 | ||
5591 | case DECL_LEN: | |
5592 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5593 | break; | |
5594 | ||
6de9cd9a | 5595 | case DECL_PARAMETER: |
231b2fcc | 5596 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5597 | break; |
5598 | ||
5599 | case DECL_POINTER: | |
5600 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5601 | break; | |
5602 | ||
ee7e677f | 5603 | case DECL_PROTECTED: |
721be0f4 SK |
5604 | if (gfc_current_state () != COMP_MODULE |
5605 | || (gfc_current_ns->proc_name | |
5606 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5607 | { |
5608 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5609 | "part of a module"); | |
524af0d6 | 5610 | t = false; |
ee7e677f TB |
5611 | break; |
5612 | } | |
5613 | ||
524af0d6 JB |
5614 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5615 | t = false; | |
ee7e677f TB |
5616 | else |
5617 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5618 | break; | |
5619 | ||
6de9cd9a | 5620 | case DECL_PRIVATE: |
231b2fcc TS |
5621 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5622 | &seen_at[d]); | |
6de9cd9a DN |
5623 | break; |
5624 | ||
5625 | case DECL_PUBLIC: | |
231b2fcc TS |
5626 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5627 | &seen_at[d]); | |
6de9cd9a DN |
5628 | break; |
5629 | ||
34d567d1 | 5630 | case DECL_STATIC: |
6de9cd9a | 5631 | case DECL_SAVE: |
80f95228 | 5632 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5633 | break; |
5634 | ||
34d567d1 FR |
5635 | case DECL_AUTOMATIC: |
5636 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5637 | break; | |
5638 | ||
6de9cd9a DN |
5639 | case DECL_TARGET: |
5640 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5641 | break; | |
5642 | ||
a8b3b0b6 CR |
5643 | case DECL_IS_BIND_C: |
5644 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5645 | break; | |
f5acf0f2 | 5646 | |
06469efd | 5647 | case DECL_VALUE: |
524af0d6 JB |
5648 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5649 | t = false; | |
06469efd PT |
5650 | else |
5651 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5652 | break; | |
5653 | ||
775e6c3a | 5654 | case DECL_VOLATILE: |
524af0d6 JB |
5655 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5656 | t = false; | |
775e6c3a TB |
5657 | else |
5658 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5659 | break; | |
5660 | ||
6de9cd9a DN |
5661 | default: |
5662 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5663 | } | |
5664 | ||
524af0d6 | 5665 | if (!t) |
6de9cd9a DN |
5666 | { |
5667 | m = MATCH_ERROR; | |
5668 | goto cleanup; | |
5669 | } | |
5670 | } | |
5671 | ||
dab2cbf8 | 5672 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5673 | if ((gfc_current_state () == COMP_MODULE |
5674 | || gfc_current_state () == COMP_SUBMODULE) | |
5675 | && !current_attr.save | |
dab2cbf8 | 5676 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5677 | current_attr.save = SAVE_IMPLICIT; |
5678 | ||
6de9cd9a DN |
5679 | colon_seen = 1; |
5680 | return MATCH_YES; | |
5681 | ||
5682 | cleanup: | |
63645982 | 5683 | gfc_current_locus = start; |
6de9cd9a DN |
5684 | gfc_free_array_spec (current_as); |
5685 | current_as = NULL; | |
6f855a26 | 5686 | attr_seen = 0; |
6de9cd9a DN |
5687 | return m; |
5688 | } | |
5689 | ||
5690 | ||
a8b3b0b6 CR |
5691 | /* Set the binding label, dest_label, either with the binding label |
5692 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5693 | will be the symbol name in all lower case, as required by the draft | |
5694 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5695 | there is more than one argument (num_idents), it is an error. */ | |
5696 | ||
524af0d6 | 5697 | static bool |
f5acf0f2 | 5698 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5699 | int num_idents) |
a8b3b0b6 | 5700 | { |
ad4a2f64 | 5701 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5702 | { |
ad4a2f64 TB |
5703 | gfc_error ("Multiple identifiers provided with " |
5704 | "single NAME= specifier at %C"); | |
524af0d6 | 5705 | return false; |
ad4a2f64 | 5706 | } |
a8b3b0b6 | 5707 | |
62603fae | 5708 | if (curr_binding_label) |
eea58adb | 5709 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5710 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5711 | else |
5712 | { | |
5713 | /* No binding label given, and the NAME= specifier did not exist, | |
5714 | which means there was no NAME="". */ | |
5715 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5716 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5717 | } |
f5acf0f2 | 5718 | |
524af0d6 | 5719 | return true; |
a8b3b0b6 CR |
5720 | } |
5721 | ||
5722 | ||
5723 | /* Set the status of the given common block as being BIND(C) or not, | |
5724 | depending on the given parameter, is_bind_c. */ | |
5725 | ||
5726 | void | |
5727 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5728 | { | |
5729 | com_block->is_bind_c = is_bind_c; | |
5730 | return; | |
5731 | } | |
5732 | ||
5733 | ||
5734 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5735 | ||
524af0d6 | 5736 | bool |
00820a2a | 5737 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5738 | { |
bc21d315 | 5739 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5740 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5741 | ? true : false; |
00820a2a | 5742 | else if (ts->type == BT_CLASS) |
524af0d6 | 5743 | return false; |
45a69325 | 5744 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5745 | return false; |
45a69325 | 5746 | |
524af0d6 | 5747 | return true; |
a8b3b0b6 CR |
5748 | } |
5749 | ||
5750 | ||
5751 | /* Verify that the variables of a given common block, which has been | |
5752 | defined with the attribute specifier bind(c), to be of a C | |
5753 | interoperable type. Errors will be reported here, if | |
5754 | encountered. */ | |
5755 | ||
524af0d6 | 5756 | bool |
a8b3b0b6 CR |
5757 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5758 | { | |
5759 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5760 | bool retval = true; |
a8b3b0b6 CR |
5761 | |
5762 | curr_sym = com_block->head; | |
f5acf0f2 | 5763 | |
a8b3b0b6 CR |
5764 | /* Make sure we have at least one symbol. */ |
5765 | if (curr_sym == NULL) | |
5766 | return retval; | |
5767 | ||
5768 | /* Here we know we have a symbol, so we'll execute this loop | |
5769 | at least once. */ | |
5770 | do | |
5771 | { | |
5772 | /* The second to last param, 1, says this is in a common block. */ | |
5773 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5774 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5775 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5776 | |
5777 | return retval; | |
5778 | } | |
5779 | ||
5780 | ||
5781 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5782 | an appropriate error message is reported. */ | |
5783 | ||
524af0d6 | 5784 | bool |
a8b3b0b6 CR |
5785 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5786 | int is_in_common, gfc_common_head *com_block) | |
5787 | { | |
8327f9c2 | 5788 | bool bind_c_function = false; |
524af0d6 | 5789 | bool retval = true; |
d8fa96e0 | 5790 | |
8327f9c2 TB |
5791 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5792 | bind_c_function = true; | |
5793 | ||
d8fa96e0 CR |
5794 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5795 | { | |
5796 | tmp_sym = tmp_sym->result; | |
5797 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5798 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5799 | { |
48749dbc MLI |
5800 | gfc_warning (OPT_Wc_binding_type, |
5801 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5802 | "%L may not be C interoperable", tmp_sym->name, |
5803 | &tmp_sym->declared_at); | |
5804 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5805 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5806 | tmp_sym->ts.is_c_interop = 1; | |
5807 | tmp_sym->attr.is_c_interop = 1; | |
5808 | } | |
5809 | } | |
8327f9c2 | 5810 | |
a8b3b0b6 CR |
5811 | /* Here, we know we have the bind(c) attribute, so if we have |
5812 | enough type info, then verify that it's a C interop kind. | |
5813 | The info could be in the symbol already, or possibly still in | |
5814 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5815 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5816 | { |
524af0d6 | 5817 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5818 | { |
5819 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5820 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5821 | { |
48749dbc MLI |
5822 | gfc_warning (OPT_Wc_binding_type, |
5823 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5824 | "may not be a C interoperable " |
48749dbc | 5825 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5826 | tmp_sym->name, com_block->name, |
5827 | &(tmp_sym->declared_at), com_block->name); | |
5828 | } | |
5829 | else | |
5830 | { | |
5831 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5832 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5833 | "interoperable but it is BIND(C)", |
5834 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5835 | else if (warn_c_binding_type) |
48749dbc | 5836 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5837 | "may not be a C interoperable " |
c4100eae | 5838 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5839 | tmp_sym->name, &(tmp_sym->declared_at)); |
5840 | } | |
5841 | } | |
f5acf0f2 | 5842 | |
a8b3b0b6 CR |
5843 | /* Variables declared w/in a common block can't be bind(c) |
5844 | since there's no way for C to see these variables, so there's | |
5845 | semantically no reason for the attribute. */ | |
5846 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5847 | { | |
c4100eae | 5848 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5849 | "%L cannot be declared with BIND(C) " |
5850 | "since it is not a global", | |
5851 | tmp_sym->name, com_block->name, | |
5852 | &(tmp_sym->declared_at)); | |
524af0d6 | 5853 | retval = false; |
a8b3b0b6 | 5854 | } |
f5acf0f2 | 5855 | |
67914693 | 5856 | /* Scalar variables that are bind(c) cannot have the pointer |
a8b3b0b6 CR |
5857 | or allocatable attributes. */ |
5858 | if (tmp_sym->attr.is_bind_c == 1) | |
5859 | { | |
5860 | if (tmp_sym->attr.pointer == 1) | |
5861 | { | |
c4100eae | 5862 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5863 | "POINTER and BIND(C) attributes", |
5864 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5865 | retval = false; |
a8b3b0b6 CR |
5866 | } |
5867 | ||
5868 | if (tmp_sym->attr.allocatable == 1) | |
5869 | { | |
c4100eae | 5870 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5871 | "ALLOCATABLE and BIND(C) attributes", |
5872 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5873 | retval = false; |
a8b3b0b6 CR |
5874 | } |
5875 | ||
8327f9c2 TB |
5876 | } |
5877 | ||
5878 | /* If it is a BIND(C) function, make sure the return value is a | |
5879 | scalar value. The previous tests in this function made sure | |
5880 | the type is interoperable. */ | |
5881 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5882 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5883 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5884 | ||
67914693 | 5885 | /* BIND(C) functions cannot return a character string. */ |
8327f9c2 | 5886 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) |
bc21d315 JW |
5887 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5888 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5889 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
86ba9ce6 | 5890 | gfc_error ("Return type of BIND(C) function %qs of character " |
0f4f8561 | 5891 | "type at %L must have length 1", tmp_sym->name, |
a8b3b0b6 | 5892 | &(tmp_sym->declared_at)); |
a8b3b0b6 CR |
5893 | } |
5894 | ||
5895 | /* See if the symbol has been marked as private. If it has, make sure | |
5896 | there is no binding label and warn the user if there is one. */ | |
5897 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5898 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5899 | /* Use gfc_warning_now because we won't say that the symbol fails |
5900 | just because of this. */ | |
db30e21c | 5901 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5902 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5903 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5904 | ||
5905 | return retval; | |
5906 | } | |
5907 | ||
5908 | ||
5909 | /* Set the appropriate fields for a symbol that's been declared as | |
5910 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5911 | the type is C interoperable. Errors are reported by the functions | |
5912 | used to set/test these fields. */ | |
5913 | ||
524af0d6 | 5914 | bool |
a8b3b0b6 CR |
5915 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5916 | { | |
524af0d6 | 5917 | bool retval = true; |
f5acf0f2 | 5918 | |
a8b3b0b6 CR |
5919 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5920 | ||
5921 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5922 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5923 | ||
524af0d6 JB |
5924 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5925 | return false; | |
a8b3b0b6 CR |
5926 | |
5927 | return retval; | |
5928 | } | |
5929 | ||
5930 | ||
5931 | /* Set the fields marking the given common block as BIND(C), including | |
5932 | a binding label, and report any errors encountered. */ | |
5933 | ||
524af0d6 | 5934 | bool |
a8b3b0b6 CR |
5935 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5936 | { | |
524af0d6 | 5937 | bool retval = true; |
f5acf0f2 | 5938 | |
a8b3b0b6 | 5939 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5940 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5941 | num_idents)) |
5942 | return false; | |
a8b3b0b6 CR |
5943 | |
5944 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5945 | set_com_block_bind_c (com_block, 1); | |
5946 | ||
5947 | return retval; | |
5948 | } | |
5949 | ||
5950 | ||
5951 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5952 | attribute applies to. */ | |
5953 | ||
524af0d6 | 5954 | bool |
a8b3b0b6 CR |
5955 | get_bind_c_idents (void) |
5956 | { | |
5957 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5958 | int num_idents = 0; | |
5959 | gfc_symbol *tmp_sym = NULL; | |
5960 | match found_id; | |
5961 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5962 | |
a8b3b0b6 CR |
5963 | if (gfc_match_name (name) == MATCH_YES) |
5964 | { | |
5965 | found_id = MATCH_YES; | |
5966 | gfc_get_ha_symbol (name, &tmp_sym); | |
5967 | } | |
5968 | else if (match_common_name (name) == MATCH_YES) | |
5969 | { | |
5970 | found_id = MATCH_YES; | |
5971 | com_block = gfc_get_common (name, 0); | |
5972 | } | |
5973 | else | |
5974 | { | |
5975 | gfc_error ("Need either entity or common block name for " | |
5976 | "attribute specification statement at %C"); | |
524af0d6 | 5977 | return false; |
a8b3b0b6 | 5978 | } |
f5acf0f2 | 5979 | |
a8b3b0b6 CR |
5980 | /* Save the current identifier and look for more. */ |
5981 | do | |
5982 | { | |
5983 | /* Increment the number of identifiers found for this spec stmt. */ | |
5984 | num_idents++; | |
5985 | ||
5986 | /* Make sure we have a sym or com block, and verify that it can | |
5987 | be bind(c). Set the appropriate field(s) and look for more | |
5988 | identifiers. */ | |
f5acf0f2 | 5989 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5990 | { |
5991 | if (tmp_sym != NULL) | |
5992 | { | |
524af0d6 JB |
5993 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5994 | return false; | |
a8b3b0b6 CR |
5995 | } |
5996 | else | |
5997 | { | |
524af0d6 JB |
5998 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5999 | return false; | |
a8b3b0b6 | 6000 | } |
f5acf0f2 | 6001 | |
a8b3b0b6 CR |
6002 | /* Look to see if we have another identifier. */ |
6003 | tmp_sym = NULL; | |
6004 | if (gfc_match_eos () == MATCH_YES) | |
6005 | found_id = MATCH_NO; | |
6006 | else if (gfc_match_char (',') != MATCH_YES) | |
6007 | found_id = MATCH_NO; | |
6008 | else if (gfc_match_name (name) == MATCH_YES) | |
6009 | { | |
6010 | found_id = MATCH_YES; | |
6011 | gfc_get_ha_symbol (name, &tmp_sym); | |
6012 | } | |
6013 | else if (match_common_name (name) == MATCH_YES) | |
6014 | { | |
6015 | found_id = MATCH_YES; | |
6016 | com_block = gfc_get_common (name, 0); | |
6017 | } | |
6018 | else | |
6019 | { | |
6020 | gfc_error ("Missing entity or common block name for " | |
6021 | "attribute specification statement at %C"); | |
524af0d6 | 6022 | return false; |
a8b3b0b6 CR |
6023 | } |
6024 | } | |
6025 | else | |
6026 | { | |
6027 | gfc_internal_error ("Missing symbol"); | |
6028 | } | |
6029 | } while (found_id == MATCH_YES); | |
6030 | ||
6031 | /* if we get here we were successful */ | |
524af0d6 | 6032 | return true; |
a8b3b0b6 CR |
6033 | } |
6034 | ||
6035 | ||
6036 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 6037 | |
a8b3b0b6 CR |
6038 | match |
6039 | gfc_match_bind_c_stmt (void) | |
6040 | { | |
6041 | match found_match = MATCH_NO; | |
6042 | gfc_typespec *ts; | |
6043 | ||
6044 | ts = ¤t_ts; | |
f5acf0f2 | 6045 | |
a8b3b0b6 CR |
6046 | /* This may not be necessary. */ |
6047 | gfc_clear_ts (ts); | |
6048 | /* Clear the temporary binding label holder. */ | |
62603fae | 6049 | curr_binding_label = NULL; |
a8b3b0b6 CR |
6050 | |
6051 | /* Look for the bind(c). */ | |
1eabf70a | 6052 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
6053 | |
6054 | if (found_match == MATCH_YES) | |
6055 | { | |
878cdb7b TB |
6056 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
6057 | return MATCH_ERROR; | |
6058 | ||
a8b3b0b6 CR |
6059 | /* Look for the :: now, but it is not required. */ |
6060 | gfc_match (" :: "); | |
6061 | ||
6062 | /* Get the identifier(s) that needs to be updated. This may need to | |
6063 | change to hand the flag(s) for the attr specified so all identifiers | |
6064 | found can have all appropriate parts updated (assuming that the same | |
6065 | spec stmt can have multiple attrs, such as both bind(c) and | |
6066 | allocatable...). */ | |
524af0d6 | 6067 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
6068 | /* Error message should have printed already. */ |
6069 | return MATCH_ERROR; | |
6070 | } | |
6071 | ||
6072 | return found_match; | |
6073 | } | |
6074 | ||
6075 | ||
6de9cd9a DN |
6076 | /* Match a data declaration statement. */ |
6077 | ||
6078 | match | |
6079 | gfc_match_data_decl (void) | |
6080 | { | |
6081 | gfc_symbol *sym; | |
6082 | match m; | |
949d5b72 | 6083 | int elem; |
6de9cd9a | 6084 | |
5bab4c96 PT |
6085 | type_param_spec_list = NULL; |
6086 | decl_type_param_list = NULL; | |
6087 | ||
a8b3b0b6 | 6088 | num_idents_on_line = 0; |
f5acf0f2 | 6089 | |
e74f1cc8 | 6090 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
6091 | if (m != MATCH_YES) |
6092 | return m; | |
6093 | ||
2e23972e | 6094 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 6095 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 6096 | { |
bc21d315 | 6097 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
6098 | |
6099 | if (sym == NULL) | |
6100 | { | |
6101 | m = MATCH_ERROR; | |
6102 | goto cleanup; | |
6103 | } | |
6104 | ||
bc21d315 | 6105 | current_ts.u.derived = sym; |
6de9cd9a DN |
6106 | } |
6107 | ||
6108 | m = match_attr_spec (); | |
6109 | if (m == MATCH_ERROR) | |
6110 | { | |
6111 | m = MATCH_NO; | |
6112 | goto cleanup; | |
6113 | } | |
6114 | ||
8b704316 PT |
6115 | if (current_ts.type == BT_CLASS |
6116 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
6117 | goto ok; | |
6118 | ||
2e23972e JW |
6119 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
6120 | && current_ts.u.derived->components == NULL | |
bc21d315 | 6121 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
6122 | { |
6123 | ||
f6288c24 | 6124 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
6125 | goto ok; |
6126 | ||
00cad178 | 6127 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
bf9f15ee PT |
6128 | goto ok; |
6129 | ||
bc21d315 | 6130 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 6131 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 6132 | |
976e21f6 | 6133 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
6134 | which has its components defined, or be a structure definition |
6135 | actively being parsed. */ | |
6136 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 6137 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
6138 | || current_ts.u.derived->attr.zero_comp |
6139 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
6140 | goto ok; |
6141 | ||
a1b80ec7 JW |
6142 | gfc_error ("Derived type at %C has not been previously defined " |
6143 | "and so cannot appear in a derived type definition"); | |
6144 | m = MATCH_ERROR; | |
6145 | goto cleanup; | |
6de9cd9a DN |
6146 | } |
6147 | ||
6148 | ok: | |
6149 | /* If we have an old-style character declaration, and no new-style | |
6150 | attribute specifications, then there a comma is optional between | |
6151 | the type specification and the variable list. */ | |
6152 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
6153 | gfc_match_char (','); | |
6154 | ||
949d5b72 PT |
6155 | /* Give the types/attributes to symbols that follow. Give the element |
6156 | a number so that repeat character length expressions can be copied. */ | |
6157 | elem = 1; | |
6de9cd9a DN |
6158 | for (;;) |
6159 | { | |
a8b3b0b6 | 6160 | num_idents_on_line++; |
949d5b72 | 6161 | m = variable_decl (elem++); |
6de9cd9a DN |
6162 | if (m == MATCH_ERROR) |
6163 | goto cleanup; | |
6164 | if (m == MATCH_NO) | |
6165 | break; | |
6166 | ||
6167 | if (gfc_match_eos () == MATCH_YES) | |
6168 | goto cleanup; | |
6169 | if (gfc_match_char (',') != MATCH_YES) | |
6170 | break; | |
6171 | } | |
6172 | ||
0f447a6e | 6173 | if (!gfc_error_flag_test ()) |
94903212 FR |
6174 | { |
6175 | /* An anonymous structure declaration is unambiguous; if we matched one | |
6176 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
6177 | here to avoid confusing the remaining matchers, even if there was an | |
6178 | error during variable_decl. We must flush any such errors. Note this | |
6179 | causes the parser to gracefully continue parsing the remaining input | |
6180 | as a structure body, which likely follows. */ | |
6181 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6182 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6183 | { | |
6184 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6185 | " at %C"); | |
6186 | /* Skip the bad variable_decl and line up for the start of the | |
6187 | structure body. */ | |
6188 | gfc_error_recovery (); | |
6189 | m = MATCH_YES; | |
6190 | goto cleanup; | |
6191 | } | |
6192 | ||
6193 | gfc_error ("Syntax error in data declaration at %C"); | |
6194 | } | |
6195 | ||
6de9cd9a DN |
6196 | m = MATCH_ERROR; |
6197 | ||
a9f6f1f2 JD |
6198 | gfc_free_data_all (gfc_current_ns); |
6199 | ||
6de9cd9a | 6200 | cleanup: |
5bab4c96 PT |
6201 | if (saved_kind_expr) |
6202 | gfc_free_expr (saved_kind_expr); | |
6203 | if (type_param_spec_list) | |
6204 | gfc_free_actual_arglist (type_param_spec_list); | |
6205 | if (decl_type_param_list) | |
6206 | gfc_free_actual_arglist (decl_type_param_list); | |
6207 | saved_kind_expr = NULL; | |
6de9cd9a DN |
6208 | gfc_free_array_spec (current_as); |
6209 | current_as = NULL; | |
6210 | return m; | |
6211 | } | |
6212 | ||
2810dfab SK |
6213 | static bool |
6214 | in_module_or_interface(void) | |
6215 | { | |
6216 | if (gfc_current_state () == COMP_MODULE | |
0a524296 | 6217 | || gfc_current_state () == COMP_SUBMODULE |
2810dfab SK |
6218 | || gfc_current_state () == COMP_INTERFACE) |
6219 | return true; | |
6220 | ||
6221 | if (gfc_state_stack->state == COMP_CONTAINS | |
6222 | || gfc_state_stack->state == COMP_FUNCTION | |
6223 | || gfc_state_stack->state == COMP_SUBROUTINE) | |
6224 | { | |
6225 | gfc_state_data *p; | |
6226 | for (p = gfc_state_stack->previous; p ; p = p->previous) | |
6227 | { | |
0a524296 | 6228 | if (p->state == COMP_MODULE || p->state == COMP_SUBMODULE |
2810dfab SK |
6229 | || p->state == COMP_INTERFACE) |
6230 | return true; | |
6231 | } | |
6232 | } | |
6233 | return false; | |
6234 | } | |
6de9cd9a DN |
6235 | |
6236 | /* Match a prefix associated with a function or subroutine | |
6237 | declaration. If the typespec pointer is nonnull, then a typespec | |
6238 | can be matched. Note that if nothing matches, MATCH_YES is | |
6239 | returned (the null string was matched). */ | |
6240 | ||
1c8bcdf7 PT |
6241 | match |
6242 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 6243 | { |
7389bce6 | 6244 | bool seen_type; |
e6c14898 DK |
6245 | bool seen_impure; |
6246 | bool found_prefix; | |
6de9cd9a DN |
6247 | |
6248 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
6249 | seen_type = false; |
6250 | seen_impure = false; | |
6de9cd9a | 6251 | |
3df684e2 DK |
6252 | gcc_assert (!gfc_matching_prefix); |
6253 | gfc_matching_prefix = true; | |
f37e928c | 6254 | |
e6c14898 | 6255 | do |
6de9cd9a | 6256 | { |
e6c14898 | 6257 | found_prefix = false; |
6de9cd9a | 6258 | |
70112e2a PT |
6259 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6260 | corresponding attribute seems natural and distinguishes these | |
6261 | procedures from procedure types of PROC_MODULE, which these are | |
6262 | as well. */ | |
6263 | if (gfc_match ("module% ") == MATCH_YES) | |
6264 | { | |
6265 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6266 | goto error; | |
6267 | ||
2810dfab SK |
6268 | if (!in_module_or_interface ()) |
6269 | { | |
6270 | gfc_error ("MODULE prefix at %C found outside of a module, " | |
6271 | "submodule, or interface"); | |
6272 | goto error; | |
6273 | } | |
6274 | ||
70112e2a PT |
6275 | current_attr.module_procedure = 1; |
6276 | found_prefix = true; | |
6277 | } | |
6278 | ||
95040e7e | 6279 | if (!seen_type && ts != NULL) |
e6c14898 | 6280 | { |
95040e7e SK |
6281 | match m; |
6282 | m = gfc_match_decl_type_spec (ts, 0); | |
6283 | if (m == MATCH_ERROR) | |
6284 | goto error; | |
6285 | if (m == MATCH_YES && gfc_match_space () == MATCH_YES) | |
6286 | { | |
6287 | seen_type = true; | |
6288 | found_prefix = true; | |
6289 | } | |
e6c14898 DK |
6290 | } |
6291 | ||
6292 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6293 | { | |
524af0d6 | 6294 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
6295 | goto error; |
6296 | ||
6297 | found_prefix = true; | |
6298 | } | |
6299 | ||
6300 | if (gfc_match ("pure% ") == MATCH_YES) | |
6301 | { | |
524af0d6 | 6302 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
6303 | goto error; |
6304 | ||
6305 | found_prefix = true; | |
6306 | } | |
6de9cd9a | 6307 | |
e6c14898 DK |
6308 | if (gfc_match ("recursive% ") == MATCH_YES) |
6309 | { | |
524af0d6 | 6310 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
6311 | goto error; |
6312 | ||
6313 | found_prefix = true; | |
6314 | } | |
6315 | ||
6316 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6317 | attribute but rather only prevents ELEMENTAL routines from being | |
6318 | automatically PURE. */ | |
6319 | if (gfc_match ("impure% ") == MATCH_YES) | |
6320 | { | |
524af0d6 | 6321 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
6322 | goto error; |
6323 | ||
6324 | seen_impure = true; | |
6325 | found_prefix = true; | |
6326 | } | |
6de9cd9a | 6327 | } |
e6c14898 | 6328 | while (found_prefix); |
6de9cd9a | 6329 | |
e6c14898 DK |
6330 | /* IMPURE and PURE must not both appear, of course. */ |
6331 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 6332 | { |
e6c14898 DK |
6333 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6334 | goto error; | |
6de9cd9a DN |
6335 | } |
6336 | ||
e6c14898 DK |
6337 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6338 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 6339 | { |
524af0d6 | 6340 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 6341 | goto error; |
6de9cd9a DN |
6342 | } |
6343 | ||
6344 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 6345 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 6346 | |
3df684e2 | 6347 | gfc_matching_prefix = false; |
6de9cd9a | 6348 | return MATCH_YES; |
f37e928c DK |
6349 | |
6350 | error: | |
3df684e2 DK |
6351 | gcc_assert (gfc_matching_prefix); |
6352 | gfc_matching_prefix = false; | |
f37e928c | 6353 | return MATCH_ERROR; |
6de9cd9a DN |
6354 | } |
6355 | ||
6356 | ||
1c8bcdf7 | 6357 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 6358 | |
524af0d6 | 6359 | static bool |
636dff67 | 6360 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 6361 | { |
6442a6f4 PT |
6362 | if (dest->module_procedure) |
6363 | { | |
6364 | if (current_attr.elemental) | |
6365 | dest->elemental = 1; | |
6366 | ||
6367 | if (current_attr.pure) | |
6368 | dest->pure = 1; | |
6369 | ||
6370 | if (current_attr.recursive) | |
6371 | dest->recursive = 1; | |
6372 | ||
6373 | /* Module procedures are unusual in that the 'dest' is copied from | |
6374 | the interface declaration. However, this is an oportunity to | |
6375 | check that the submodule declaration is compliant with the | |
6376 | interface. */ | |
6377 | if (dest->elemental && !current_attr.elemental) | |
6378 | { | |
6379 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6380 | "missing at %L", where); | |
6381 | return false; | |
6382 | } | |
6383 | ||
6384 | if (dest->pure && !current_attr.pure) | |
6385 | { | |
6386 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6387 | "missing at %L", where); | |
6388 | return false; | |
6389 | } | |
6390 | ||
6391 | if (dest->recursive && !current_attr.recursive) | |
6392 | { | |
6393 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6394 | "missing at %L", where); | |
6395 | return false; | |
6396 | } | |
6397 | ||
6398 | return true; | |
6399 | } | |
6de9cd9a | 6400 | |
524af0d6 JB |
6401 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6402 | return false; | |
6de9cd9a | 6403 | |
6442a6f4 PT |
6404 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6405 | return false; | |
6406 | ||
524af0d6 JB |
6407 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6408 | return false; | |
6de9cd9a | 6409 | |
524af0d6 | 6410 | return true; |
6de9cd9a DN |
6411 | } |
6412 | ||
6413 | ||
5bab4c96 PT |
6414 | /* Match a formal argument list or, if typeparam is true, a |
6415 | type_param_name_list. */ | |
6de9cd9a DN |
6416 | |
6417 | match | |
5bab4c96 PT |
6418 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6419 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6420 | { |
6421 | gfc_formal_arglist *head, *tail, *p, *q; | |
6422 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6423 | gfc_symbol *sym; | |
6424 | match m; | |
4668d6f9 | 6425 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6426 | |
6427 | head = tail = NULL; | |
6428 | ||
4668d6f9 PT |
6429 | /* Keep the interface formal argument list and null it so that the |
6430 | matching for the new declaration can be done. The numbers and | |
6431 | names of the arguments are checked here. The interface formal | |
6432 | arguments are retained in formal_arglist and the characteristics | |
6433 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6434 | in get_proc_name about the eventual need to copy the formal_arglist | |
6435 | and populate the formal namespace of the interface symbol. */ | |
6436 | if (progname->attr.module_procedure | |
6437 | && progname->attr.host_assoc) | |
6438 | { | |
6439 | formal = progname->formal; | |
6440 | progname->formal = NULL; | |
6441 | } | |
6442 | ||
6de9cd9a DN |
6443 | if (gfc_match_char ('(') != MATCH_YES) |
6444 | { | |
6445 | if (null_flag) | |
6446 | goto ok; | |
6447 | return MATCH_NO; | |
6448 | } | |
6449 | ||
6450 | if (gfc_match_char (')') == MATCH_YES) | |
0a524296 | 6451 | { |
84083a71 JW |
6452 | if (typeparam) |
6453 | { | |
6454 | gfc_error_now ("A type parameter list is required at %C"); | |
6455 | m = MATCH_ERROR; | |
6456 | goto cleanup; | |
6457 | } | |
6458 | else | |
6459 | goto ok; | |
6460 | } | |
6de9cd9a DN |
6461 | |
6462 | for (;;) | |
6463 | { | |
6464 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6465 | { |
6466 | sym = NULL; | |
276515e6 PT |
6467 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6468 | "Alternate-return argument at %C")) | |
9362a03b JW |
6469 | { |
6470 | m = MATCH_ERROR; | |
6471 | goto cleanup; | |
6472 | } | |
276515e6 PT |
6473 | else if (typeparam) |
6474 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6475 | } |
6de9cd9a DN |
6476 | else |
6477 | { | |
6478 | m = gfc_match_name (name); | |
6479 | if (m != MATCH_YES) | |
276515e6 PT |
6480 | { |
6481 | if(typeparam) | |
6482 | gfc_error_now ("A parameter name is required at %C"); | |
6483 | goto cleanup; | |
6484 | } | |
6de9cd9a | 6485 | |
5bab4c96 PT |
6486 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6487 | goto cleanup; | |
6488 | else if (typeparam | |
6489 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6490 | goto cleanup; |
6491 | } | |
6492 | ||
6493 | p = gfc_get_formal_arglist (); | |
6494 | ||
6495 | if (head == NULL) | |
6496 | head = tail = p; | |
6497 | else | |
6498 | { | |
6499 | tail->next = p; | |
6500 | tail = p; | |
6501 | } | |
6502 | ||
6503 | tail->sym = sym; | |
6504 | ||
6505 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6506 | dummy procedure. We don't apply these attributes to formal |
6507 | arguments of statement functions. */ | |
6de9cd9a | 6508 | if (sym != NULL && !st_flag |
524af0d6 JB |
6509 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6510 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6511 | { |
6512 | m = MATCH_ERROR; | |
6513 | goto cleanup; | |
6514 | } | |
6515 | ||
6516 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6517 | so check for it explicitly. After the statement is accepted, |
6518 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6519 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6520 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6521 | { | |
c4100eae | 6522 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6523 | sym->name); |
6524 | m = MATCH_ERROR; | |
6525 | goto cleanup; | |
6526 | } | |
6527 | ||
6528 | if (gfc_match_char (')') == MATCH_YES) | |
6529 | goto ok; | |
6530 | ||
6531 | m = gfc_match_char (','); | |
6532 | if (m != MATCH_YES) | |
6533 | { | |
de624bee PT |
6534 | if (typeparam) |
6535 | gfc_error_now ("Expected parameter list in type declaration " | |
6536 | "at %C"); | |
6537 | else | |
6538 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6539 | goto cleanup; |
6540 | } | |
6541 | } | |
6542 | ||
6543 | ok: | |
6544 | /* Check for duplicate symbols in the formal argument list. */ | |
6545 | if (head != NULL) | |
6546 | { | |
6547 | for (p = head; p->next; p = p->next) | |
6548 | { | |
6549 | if (p->sym == NULL) | |
6550 | continue; | |
6551 | ||
6552 | for (q = p->next; q; q = q->next) | |
6553 | if (p->sym == q->sym) | |
6554 | { | |
de624bee PT |
6555 | if (typeparam) |
6556 | gfc_error_now ("Duplicate name %qs in parameter " | |
6557 | "list at %C", p->sym->name); | |
6558 | else | |
6559 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6560 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6561 | |
6562 | m = MATCH_ERROR; | |
6563 | goto cleanup; | |
6564 | } | |
6565 | } | |
6566 | } | |
6567 | ||
524af0d6 | 6568 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6569 | { |
6570 | m = MATCH_ERROR; | |
6571 | goto cleanup; | |
6572 | } | |
6573 | ||
e9d9b48d PT |
6574 | /* gfc_error_now used in following and return with MATCH_YES because |
6575 | doing otherwise results in a cascade of extraneous errors and in | |
6576 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6577 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6578 | { |
0ef5fbc1 PT |
6579 | bool arg_count_mismatch = false; |
6580 | ||
6581 | if (!formal && head) | |
6582 | arg_count_mismatch = true; | |
6583 | ||
6584 | /* Abbreviated module procedure declaration is not meant to have any | |
6585 | formal arguments! */ | |
e9d9b48d | 6586 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6587 | arg_count_mismatch = true; |
6588 | ||
4668d6f9 PT |
6589 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6590 | { | |
6591 | if ((p->next != NULL && q->next == NULL) | |
6592 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6593 | arg_count_mismatch = true; |
4668d6f9 PT |
6594 | else if ((p->sym == NULL && q->sym == NULL) |
6595 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6596 | continue; | |
6597 | else | |
6598 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6599 | "argument names (%s/%s) at %C", | |
6600 | p->sym->name, q->sym->name); | |
6601 | } | |
0ef5fbc1 PT |
6602 | |
6603 | if (arg_count_mismatch) | |
6604 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6605 | "formal arguments at %C"); | |
4668d6f9 PT |
6606 | } |
6607 | ||
6de9cd9a DN |
6608 | return MATCH_YES; |
6609 | ||
6610 | cleanup: | |
6611 | gfc_free_formal_arglist (head); | |
6612 | return m; | |
6613 | } | |
6614 | ||
6615 | ||
6616 | /* Match a RESULT specification following a function declaration or | |
6617 | ENTRY statement. Also matches the end-of-statement. */ | |
6618 | ||
6619 | static match | |
66e4ab31 | 6620 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6621 | { |
6622 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6623 | gfc_symbol *r; | |
6624 | match m; | |
6625 | ||
6626 | if (gfc_match (" result (") != MATCH_YES) | |
6627 | return MATCH_NO; | |
6628 | ||
6629 | m = gfc_match_name (name); | |
6630 | if (m != MATCH_YES) | |
6631 | return m; | |
6632 | ||
a8b3b0b6 CR |
6633 | /* Get the right paren, and that's it because there could be the |
6634 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6635 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6636 | { |
a8b3b0b6 | 6637 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6638 | return MATCH_ERROR; |
6639 | } | |
6640 | ||
6641 | if (strcmp (function->name, name) == 0) | |
6642 | { | |
636dff67 | 6643 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6644 | return MATCH_ERROR; |
6645 | } | |
6646 | ||
6647 | if (gfc_get_symbol (name, NULL, &r)) | |
6648 | return MATCH_ERROR; | |
6649 | ||
524af0d6 | 6650 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6651 | return MATCH_ERROR; |
6652 | ||
6653 | *result = r; | |
6654 | ||
6655 | return MATCH_YES; | |
6656 | } | |
6657 | ||
6658 | ||
a8b3b0b6 CR |
6659 | /* Match a function suffix, which could be a combination of a result |
6660 | clause and BIND(C), either one, or neither. The draft does not | |
6661 | require them to come in a specific order. */ | |
6662 | ||
6663 | match | |
6664 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6665 | { | |
6666 | match is_bind_c; /* Found bind(c). */ | |
6667 | match is_result; /* Found result clause. */ | |
6668 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6669 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6670 | bool allow_binding_name; |
a8b3b0b6 CR |
6671 | |
6672 | /* Initialize to having found nothing. */ | |
6673 | found_match = MATCH_NO; | |
f5acf0f2 | 6674 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6675 | is_result = MATCH_NO; |
6676 | ||
6677 | /* Get the next char to narrow between result and bind(c). */ | |
6678 | gfc_gobble_whitespace (); | |
8fc541d3 | 6679 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6680 | |
1eabf70a TB |
6681 | /* C binding names are not allowed for internal procedures. */ |
6682 | if (gfc_current_state () == COMP_CONTAINS | |
6683 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6684 | allow_binding_name = false; | |
6685 | else | |
6686 | allow_binding_name = true; | |
6687 | ||
a8b3b0b6 CR |
6688 | switch (peek_char) |
6689 | { | |
6690 | case 'r': | |
6691 | /* Look for result clause. */ | |
6692 | is_result = match_result (sym, result); | |
6693 | if (is_result == MATCH_YES) | |
6694 | { | |
6695 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6696 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6697 | /* We've found the result clause and possibly bind(c). */ |
6698 | found_match = MATCH_YES; | |
6699 | } | |
6700 | else | |
6701 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6702 | found_match = is_result; |
a8b3b0b6 CR |
6703 | break; |
6704 | case 'b': | |
6705 | /* Look for bind(c) first. */ | |
1eabf70a | 6706 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6707 | if (is_bind_c == MATCH_YES) |
6708 | { | |
6709 | /* Now see if a result clause followed it. */ | |
6710 | is_result = match_result (sym, result); | |
6711 | found_match = MATCH_YES; | |
6712 | } | |
6713 | else | |
6714 | { | |
6715 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6716 | found_match = MATCH_ERROR; | |
6717 | } | |
6718 | break; | |
6719 | default: | |
6720 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6721 | found_match = MATCH_ERROR; | |
6722 | break; | |
6723 | } | |
6724 | ||
a8b3b0b6 | 6725 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6726 | { |
1eabf70a | 6727 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6728 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6729 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6730 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6731 | "at %L may not be specified for an internal " | |
6732 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6733 | return MATCH_ERROR; |
6734 | ||
524af0d6 | 6735 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6736 | return MATCH_ERROR; |
6737 | } | |
f5acf0f2 | 6738 | |
a8b3b0b6 CR |
6739 | return found_match; |
6740 | } | |
6741 | ||
6742 | ||
3070bab4 JW |
6743 | /* Procedure pointer return value without RESULT statement: |
6744 | Add "hidden" result variable named "ppr@". */ | |
6745 | ||
524af0d6 | 6746 | static bool |
3070bab4 JW |
6747 | add_hidden_procptr_result (gfc_symbol *sym) |
6748 | { | |
6749 | bool case1,case2; | |
6750 | ||
6751 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6752 | return false; |
3070bab4 JW |
6753 | |
6754 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6755 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6756 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6757 | && sym->attr.external; | |
6758 | /* Second usage case: INTERFACE statements. */ | |
6759 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6760 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6761 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6762 | ||
6763 | if (case1 || case2) | |
6764 | { | |
6765 | gfc_symtree *stree; | |
6766 | if (case1) | |
08a6b8e0 | 6767 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
5433e401 | 6768 | else |
c73b6478 JW |
6769 | { |
6770 | gfc_symtree *st2; | |
08a6b8e0 | 6771 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6772 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6773 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6774 | stree->n.sym->refs++; |
c73b6478 | 6775 | } |
3070bab4 JW |
6776 | sym->result = stree->n.sym; |
6777 | ||
6778 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6779 | sym->result->attr.pointer = sym->attr.pointer; | |
6780 | sym->result->attr.external = sym->attr.external; | |
6781 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6782 | sym->result->ts = sym->ts; |
3070bab4 JW |
6783 | sym->attr.proc_pointer = 0; |
6784 | sym->attr.pointer = 0; | |
6785 | sym->attr.external = 0; | |
6786 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6787 | { | |
6788 | sym->result->attr.pointer = 0; | |
6789 | sym->result->attr.proc_pointer = 1; | |
6790 | } | |
6791 | ||
6792 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6793 | } | |
6794 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6795 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6796 | && sym->result && sym->result != sym && sym->result->attr.external | |
6797 | && sym == gfc_current_ns->proc_name | |
6798 | && sym == sym->result->ns->proc_name | |
6799 | && strcmp ("ppr@", sym->result->name) == 0) | |
6800 | { | |
6801 | sym->result->attr.proc_pointer = 1; | |
6802 | sym->attr.pointer = 0; | |
524af0d6 | 6803 | return true; |
3070bab4 JW |
6804 | } |
6805 | else | |
524af0d6 | 6806 | return false; |
3070bab4 JW |
6807 | } |
6808 | ||
6809 | ||
713485cc JW |
6810 | /* Match the interface for a PROCEDURE declaration, |
6811 | including brackets (R1212). */ | |
69773742 JW |
6812 | |
6813 | static match | |
713485cc | 6814 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6815 | { |
6816 | match m; | |
3276e0b3 | 6817 | gfc_symtree *st; |
69773742 | 6818 | locus old_loc, entry_loc; |
3276e0b3 PT |
6819 | gfc_namespace *old_ns = gfc_current_ns; |
6820 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6821 | |
3276e0b3 | 6822 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6823 | gfc_clear_ts (¤t_ts); |
6824 | ||
6825 | if (gfc_match (" (") != MATCH_YES) | |
6826 | { | |
6827 | gfc_current_locus = entry_loc; | |
6828 | return MATCH_NO; | |
6829 | } | |
6830 | ||
6831 | /* Get the type spec. for the procedure interface. */ | |
6832 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6833 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6834 | gfc_gobble_whitespace (); |
8fc541d3 | 6835 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6836 | goto got_ts; |
6837 | ||
6838 | if (m == MATCH_ERROR) | |
6839 | return m; | |
6840 | ||
3276e0b3 | 6841 | /* Procedure interface is itself a procedure. */ |
69773742 | 6842 | gfc_current_locus = old_loc; |
3276e0b3 | 6843 | m = gfc_match_name (name); |
69773742 | 6844 | |
3276e0b3 PT |
6845 | /* First look to see if it is already accessible in the current |
6846 | namespace because it is use associated or contained. */ | |
6847 | st = NULL; | |
6848 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6849 | return MATCH_ERROR; | |
6850 | ||
6851 | /* If it is still not found, then try the parent namespace, if it | |
6852 | exists and create the symbol there if it is still not found. */ | |
6853 | if (gfc_current_ns->parent) | |
6854 | gfc_current_ns = gfc_current_ns->parent; | |
6855 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6856 | return MATCH_ERROR; | |
6857 | ||
6858 | gfc_current_ns = old_ns; | |
6859 | *proc_if = st->n.sym; | |
69773742 | 6860 | |
713485cc | 6861 | if (*proc_if) |
69773742 | 6862 | { |
713485cc | 6863 | (*proc_if)->refs++; |
bb343a6c TB |
6864 | /* Resolve interface if possible. That way, attr.procedure is only set |
6865 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6866 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6867 | while ((*proc_if)->ts.interface |
6868 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6869 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6870 | |
0e8d854e JW |
6871 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6872 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6873 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6874 | (*proc_if)->name, NULL)) |
0e8d854e | 6875 | return MATCH_ERROR; |
69773742 JW |
6876 | } |
6877 | ||
6878 | got_ts: | |
69773742 JW |
6879 | if (gfc_match (" )") != MATCH_YES) |
6880 | { | |
6881 | gfc_current_locus = entry_loc; | |
6882 | return MATCH_NO; | |
6883 | } | |
6884 | ||
713485cc JW |
6885 | return MATCH_YES; |
6886 | } | |
6887 | ||
6888 | ||
6889 | /* Match a PROCEDURE declaration (R1211). */ | |
6890 | ||
6891 | static match | |
6892 | match_procedure_decl (void) | |
6893 | { | |
6894 | match m; | |
6895 | gfc_symbol *sym, *proc_if = NULL; | |
6896 | int num; | |
6897 | gfc_expr *initializer = NULL; | |
6898 | ||
1cc0e193 | 6899 | /* Parse interface (with brackets). */ |
713485cc JW |
6900 | m = match_procedure_interface (&proc_if); |
6901 | if (m != MATCH_YES) | |
6902 | return m; | |
6903 | ||
6904 | /* Parse attributes (with colons). */ | |
69773742 JW |
6905 | m = match_attr_spec(); |
6906 | if (m == MATCH_ERROR) | |
6907 | return MATCH_ERROR; | |
6908 | ||
0859be17 TB |
6909 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6910 | { | |
6911 | current_attr.is_bind_c = 1; | |
6912 | has_name_equals = 0; | |
6913 | curr_binding_label = NULL; | |
6914 | } | |
6915 | ||
69773742 JW |
6916 | /* Get procedure symbols. */ |
6917 | for(num=1;;num++) | |
6918 | { | |
69773742 JW |
6919 | m = gfc_match_symbol (&sym, 0); |
6920 | if (m == MATCH_NO) | |
6921 | goto syntax; | |
6922 | else if (m == MATCH_ERROR) | |
6923 | return m; | |
6924 | ||
6925 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6926 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6927 | return MATCH_ERROR; |
6928 | ||
6929 | if (sym->attr.is_bind_c) | |
6930 | { | |
6931 | /* Check for C1218. */ | |
6932 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6933 | { | |
6934 | gfc_error ("BIND(C) attribute at %C requires " | |
6935 | "an interface with BIND(C)"); | |
6936 | return MATCH_ERROR; | |
6937 | } | |
6938 | /* Check for C1217. */ | |
6939 | if (has_name_equals && sym->attr.pointer) | |
6940 | { | |
6941 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6942 | "POINTER attribute at %C"); | |
6943 | return MATCH_ERROR; | |
6944 | } | |
6945 | if (has_name_equals && sym->attr.dummy) | |
6946 | { | |
6947 | gfc_error ("Dummy procedure at %C may not have " | |
6948 | "BIND(C) attribute with NAME"); | |
6949 | return MATCH_ERROR; | |
6950 | } | |
6951 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6952 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6953 | return MATCH_ERROR; |
6954 | } | |
6955 | ||
524af0d6 | 6956 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6957 | return MATCH_ERROR; |
3070bab4 | 6958 | |
524af0d6 | 6959 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6960 | sym = sym->result; |
6961 | ||
524af0d6 | 6962 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6963 | return MATCH_ERROR; |
6964 | ||
6965 | /* Set interface. */ | |
6966 | if (proc_if != NULL) | |
6cc309c9 | 6967 | { |
1d146030 JW |
6968 | if (sym->ts.type != BT_UNKNOWN) |
6969 | { | |
c4100eae | 6970 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6971 | sym->name, &gfc_current_locus, |
6972 | gfc_basic_typename (sym->ts.type)); | |
6973 | return MATCH_ERROR; | |
6974 | } | |
32d99e68 | 6975 | sym->ts.interface = proc_if; |
6cc309c9 | 6976 | sym->attr.untyped = 1; |
c73b6478 | 6977 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6978 | } |
69773742 JW |
6979 | else if (current_ts.type != BT_UNKNOWN) |
6980 | { | |
524af0d6 | 6981 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6982 | return MATCH_ERROR; |
32d99e68 JW |
6983 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6984 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6985 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6986 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6987 | sym->attr.function = 1; |
c73b6478 | 6988 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6989 | } |
6990 | ||
8fb74da4 JW |
6991 | if (gfc_match (" =>") == MATCH_YES) |
6992 | { | |
6993 | if (!current_attr.pointer) | |
6994 | { | |
6995 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6996 | m = MATCH_ERROR; | |
6997 | goto cleanup; | |
6998 | } | |
6999 | ||
80f95228 | 7000 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
7001 | if (m != MATCH_YES) |
7002 | goto cleanup; | |
7003 | ||
524af0d6 | 7004 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
7005 | goto cleanup; |
7006 | ||
7007 | } | |
7008 | ||
69773742 JW |
7009 | if (gfc_match_eos () == MATCH_YES) |
7010 | return MATCH_YES; | |
7011 | if (gfc_match_char (',') != MATCH_YES) | |
7012 | goto syntax; | |
7013 | } | |
7014 | ||
7015 | syntax: | |
7016 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7017 | return MATCH_ERROR; | |
8fb74da4 JW |
7018 | |
7019 | cleanup: | |
7020 | /* Free stuff up and return. */ | |
7021 | gfc_free_expr (initializer); | |
7022 | return m; | |
69773742 JW |
7023 | } |
7024 | ||
7025 | ||
713485cc JW |
7026 | static match |
7027 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
7028 | ||
7029 | ||
7030 | /* Match a procedure pointer component declaration (R445). */ | |
7031 | ||
7032 | static match | |
7033 | match_ppc_decl (void) | |
7034 | { | |
7035 | match m; | |
7036 | gfc_symbol *proc_if = NULL; | |
7037 | gfc_typespec ts; | |
7038 | int num; | |
7039 | gfc_component *c; | |
7040 | gfc_expr *initializer = NULL; | |
7041 | gfc_typebound_proc* tb; | |
7042 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7043 | ||
7044 | /* Parse interface (with brackets). */ | |
7045 | m = match_procedure_interface (&proc_if); | |
7046 | if (m != MATCH_YES) | |
7047 | goto syntax; | |
7048 | ||
7049 | /* Parse attributes. */ | |
7050 | tb = XCNEW (gfc_typebound_proc); | |
7051 | tb->where = gfc_current_locus; | |
7052 | m = match_binding_attributes (tb, false, true); | |
7053 | if (m == MATCH_ERROR) | |
7054 | return m; | |
7055 | ||
713485cc JW |
7056 | gfc_clear_attr (¤t_attr); |
7057 | current_attr.procedure = 1; | |
7058 | current_attr.proc_pointer = 1; | |
7059 | current_attr.access = tb->access; | |
7060 | current_attr.flavor = FL_PROCEDURE; | |
7061 | ||
7062 | /* Match the colons (required). */ | |
7063 | if (gfc_match (" ::") != MATCH_YES) | |
7064 | { | |
a4d9b221 | 7065 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
7066 | return MATCH_ERROR; |
7067 | } | |
7068 | ||
7069 | /* Check for C450. */ | |
7070 | if (!tb->nopass && proc_if == NULL) | |
7071 | { | |
7072 | gfc_error("NOPASS or explicit interface required at %C"); | |
7073 | return MATCH_ERROR; | |
7074 | } | |
7075 | ||
524af0d6 | 7076 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
7077 | return MATCH_ERROR; |
7078 | ||
713485cc JW |
7079 | /* Match PPC names. */ |
7080 | ts = current_ts; | |
7081 | for(num=1;;num++) | |
7082 | { | |
7083 | m = gfc_match_name (name); | |
7084 | if (m == MATCH_NO) | |
7085 | goto syntax; | |
7086 | else if (m == MATCH_ERROR) | |
7087 | return m; | |
7088 | ||
524af0d6 | 7089 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
7090 | return MATCH_ERROR; |
7091 | ||
7092 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 7093 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
7094 | return MATCH_ERROR; |
7095 | ||
524af0d6 | 7096 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
7097 | return MATCH_ERROR; |
7098 | ||
524af0d6 | 7099 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
7100 | return MATCH_ERROR; |
7101 | ||
2be03814 TB |
7102 | if (num == 1) |
7103 | c->tb = tb; | |
7104 | else | |
7105 | { | |
7106 | c->tb = XCNEW (gfc_typebound_proc); | |
7107 | c->tb->where = gfc_current_locus; | |
7108 | *c->tb = *tb; | |
7109 | } | |
90661f26 | 7110 | |
713485cc JW |
7111 | /* Set interface. */ |
7112 | if (proc_if != NULL) | |
7113 | { | |
7114 | c->ts.interface = proc_if; | |
7115 | c->attr.untyped = 1; | |
7116 | c->attr.if_source = IFSRC_IFBODY; | |
7117 | } | |
7118 | else if (ts.type != BT_UNKNOWN) | |
7119 | { | |
7120 | c->ts = ts; | |
7121 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 7122 | c->ts.interface->result = c->ts.interface; |
713485cc | 7123 | c->ts.interface->ts = ts; |
d91909c0 | 7124 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 7125 | c->ts.interface->attr.function = 1; |
d91909c0 | 7126 | c->attr.function = 1; |
713485cc JW |
7127 | c->attr.if_source = IFSRC_UNKNOWN; |
7128 | } | |
7129 | ||
7130 | if (gfc_match (" =>") == MATCH_YES) | |
7131 | { | |
80f95228 | 7132 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
7133 | if (m != MATCH_YES) |
7134 | { | |
7135 | gfc_free_expr (initializer); | |
7136 | return m; | |
7137 | } | |
7138 | c->initializer = initializer; | |
7139 | } | |
7140 | ||
7141 | if (gfc_match_eos () == MATCH_YES) | |
7142 | return MATCH_YES; | |
7143 | if (gfc_match_char (',') != MATCH_YES) | |
7144 | goto syntax; | |
7145 | } | |
7146 | ||
7147 | syntax: | |
7148 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
7149 | return MATCH_ERROR; | |
7150 | } | |
7151 | ||
7152 | ||
69773742 JW |
7153 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
7154 | ||
7155 | static match | |
7156 | match_procedure_in_interface (void) | |
7157 | { | |
7158 | match m; | |
7159 | gfc_symbol *sym; | |
7160 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 7161 | locus old_locus; |
69773742 JW |
7162 | |
7163 | if (current_interface.type == INTERFACE_NAMELESS | |
7164 | || current_interface.type == INTERFACE_ABSTRACT) | |
7165 | { | |
7166 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
7167 | return MATCH_ERROR; | |
7168 | } | |
7169 | ||
a6fcd41a TB |
7170 | /* Check if the F2008 optional double colon appears. */ |
7171 | gfc_gobble_whitespace (); | |
7172 | old_locus = gfc_current_locus; | |
7173 | if (gfc_match ("::") == MATCH_YES) | |
7174 | { | |
524af0d6 JB |
7175 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7176 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
7177 | return MATCH_ERROR; |
7178 | } | |
7179 | else | |
7180 | gfc_current_locus = old_locus; | |
7181 | ||
69773742 JW |
7182 | for(;;) |
7183 | { | |
7184 | m = gfc_match_name (name); | |
7185 | if (m == MATCH_NO) | |
7186 | goto syntax; | |
7187 | else if (m == MATCH_ERROR) | |
7188 | return m; | |
7189 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
7190 | return MATCH_ERROR; | |
7191 | ||
524af0d6 | 7192 | if (!gfc_add_interface (sym)) |
69773742 JW |
7193 | return MATCH_ERROR; |
7194 | ||
69773742 JW |
7195 | if (gfc_match_eos () == MATCH_YES) |
7196 | break; | |
7197 | if (gfc_match_char (',') != MATCH_YES) | |
7198 | goto syntax; | |
7199 | } | |
7200 | ||
7201 | return MATCH_YES; | |
7202 | ||
7203 | syntax: | |
7204 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7205 | return MATCH_ERROR; | |
7206 | } | |
7207 | ||
7208 | ||
7209 | /* General matcher for PROCEDURE declarations. */ | |
7210 | ||
30b608eb DK |
7211 | static match match_procedure_in_type (void); |
7212 | ||
69773742 JW |
7213 | match |
7214 | gfc_match_procedure (void) | |
7215 | { | |
7216 | match m; | |
7217 | ||
7218 | switch (gfc_current_state ()) | |
7219 | { | |
7220 | case COMP_NONE: | |
7221 | case COMP_PROGRAM: | |
7222 | case COMP_MODULE: | |
4668d6f9 | 7223 | case COMP_SUBMODULE: |
69773742 JW |
7224 | case COMP_SUBROUTINE: |
7225 | case COMP_FUNCTION: | |
3547d57e | 7226 | case COMP_BLOCK: |
69773742 JW |
7227 | m = match_procedure_decl (); |
7228 | break; | |
7229 | case COMP_INTERFACE: | |
7230 | m = match_procedure_in_interface (); | |
7231 | break; | |
7232 | case COMP_DERIVED: | |
713485cc JW |
7233 | m = match_ppc_decl (); |
7234 | break; | |
30b608eb DK |
7235 | case COMP_DERIVED_CONTAINS: |
7236 | m = match_procedure_in_type (); | |
7237 | break; | |
69773742 JW |
7238 | default: |
7239 | return MATCH_NO; | |
7240 | } | |
7241 | ||
7242 | if (m != MATCH_YES) | |
7243 | return m; | |
7244 | ||
524af0d6 | 7245 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
7246 | return MATCH_ERROR; |
7247 | ||
7248 | return m; | |
7249 | } | |
7250 | ||
7251 | ||
c3005b0f DK |
7252 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7253 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7254 | parser-state-stack to find out whether we're in a module. */ | |
7255 | ||
7256 | static void | |
73e42eef | 7257 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
7258 | { |
7259 | bool in_module; | |
7260 | ||
7261 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
7262 | && (gfc_state_stack->previous->state == COMP_MODULE |
7263 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
7264 | |
7265 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7266 | } | |
7267 | ||
7268 | ||
6de9cd9a DN |
7269 | /* Match a function declaration. */ |
7270 | ||
7271 | match | |
7272 | gfc_match_function_decl (void) | |
7273 | { | |
7274 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7275 | gfc_symbol *sym, *result; | |
7276 | locus old_loc; | |
7277 | match m; | |
a8b3b0b6 | 7278 | match suffix_match; |
f5acf0f2 | 7279 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
7280 | |
7281 | if (gfc_current_state () != COMP_NONE | |
7282 | && gfc_current_state () != COMP_INTERFACE | |
7283 | && gfc_current_state () != COMP_CONTAINS) | |
7284 | return MATCH_NO; | |
7285 | ||
7286 | gfc_clear_ts (¤t_ts); | |
7287 | ||
63645982 | 7288 | old_loc = gfc_current_locus; |
6de9cd9a | 7289 | |
1c8bcdf7 | 7290 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
7291 | if (m != MATCH_YES) |
7292 | { | |
63645982 | 7293 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7294 | return m; |
7295 | } | |
7296 | ||
7297 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7298 | { | |
63645982 | 7299 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7300 | return MATCH_NO; |
7301 | } | |
4668d6f9 | 7302 | |
1a492601 | 7303 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7304 | return MATCH_ERROR; |
3070bab4 | 7305 | |
524af0d6 | 7306 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7307 | sym = sym->result; |
7308 | ||
4668d6f9 PT |
7309 | if (current_attr.module_procedure) |
7310 | sym->attr.module_procedure = 1; | |
7311 | ||
6de9cd9a DN |
7312 | gfc_new_block = sym; |
7313 | ||
7314 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7315 | if (m == MATCH_NO) | |
2b9a33ae TS |
7316 | { |
7317 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 7318 | "definition at %C"); |
2b9a33ae TS |
7319 | m = MATCH_ERROR; |
7320 | goto cleanup; | |
7321 | } | |
6de9cd9a DN |
7322 | else if (m == MATCH_ERROR) |
7323 | goto cleanup; | |
7324 | ||
7325 | result = NULL; | |
7326 | ||
a8b3b0b6 CR |
7327 | /* According to the draft, the bind(c) and result clause can |
7328 | come in either order after the formal_arg_list (i.e., either | |
7329 | can be first, both can exist together or by themselves or neither | |
7330 | one). Therefore, the match_result can't match the end of the | |
7331 | string, and check for the bind(c) or result clause in either order. */ | |
7332 | found_match = gfc_match_eos (); | |
7333 | ||
7334 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7335 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7336 | not allowed for procedures. */ | |
7337 | if (sym->attr.is_bind_c == 1) | |
7338 | { | |
7339 | sym->attr.is_bind_c = 0; | |
51992f15 SK |
7340 | |
7341 | if (gfc_state_stack->previous | |
7342 | && gfc_state_stack->previous->state != COMP_SUBMODULE) | |
7343 | { | |
7344 | locus loc; | |
7345 | loc = sym->old_symbol != NULL | |
7346 | ? sym->old_symbol->declared_at : gfc_current_locus; | |
7347 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7348 | "variables or common blocks", &loc); | |
7349 | } | |
6de9cd9a DN |
7350 | } |
7351 | ||
a8b3b0b6 | 7352 | if (found_match != MATCH_YES) |
6de9cd9a | 7353 | { |
a8b3b0b6 CR |
7354 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7355 | suffix_match = gfc_match_suffix (sym, &result); | |
7356 | if (suffix_match == MATCH_YES) | |
7357 | /* Need to get the eos now. */ | |
7358 | found_match = gfc_match_eos (); | |
7359 | else | |
7360 | found_match = suffix_match; | |
6de9cd9a DN |
7361 | } |
7362 | ||
51992f15 SK |
7363 | /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module |
7364 | subprogram and a binding label is specified, it shall be the | |
7365 | same as the binding label specified in the corresponding module | |
7366 | procedure interface body. */ | |
7367 | if (sym->attr.is_bind_c && sym->attr.module_procedure && sym->old_symbol | |
7368 | && strcmp (sym->name, sym->old_symbol->name) == 0 | |
7369 | && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0) | |
7370 | { | |
7371 | const char *null = "NULL", *s1, *s2; | |
7372 | s1 = sym->binding_label; | |
7373 | if (!s1) s1 = null; | |
7374 | s2 = sym->old_symbol->binding_label; | |
7375 | if (!s2) s2 = null; | |
7376 | gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2); | |
7377 | sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */ | |
7378 | return MATCH_ERROR; | |
7379 | } | |
7380 | ||
a8b3b0b6 CR |
7381 | if(found_match != MATCH_YES) |
7382 | m = MATCH_ERROR; | |
6de9cd9a DN |
7383 | else |
7384 | { | |
a8b3b0b6 CR |
7385 | /* Make changes to the symbol. */ |
7386 | m = MATCH_ERROR; | |
f5acf0f2 | 7387 | |
524af0d6 | 7388 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 7389 | goto cleanup; |
f5acf0f2 | 7390 | |
70112e2a | 7391 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 7392 | goto cleanup; |
6de9cd9a | 7393 | |
70112e2a PT |
7394 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7395 | { | |
7396 | if(!sym->attr.module_procedure) | |
7397 | goto cleanup; | |
7398 | else | |
7399 | gfc_error_check (); | |
7400 | } | |
7401 | ||
a99d95a2 | 7402 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 7403 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
7404 | sym->declared_at = old_loc; |
7405 | if (current_ts.type != BT_UNKNOWN) | |
7406 | current_ts.kind = -1; | |
7407 | else | |
7408 | current_ts.kind = 0; | |
1c8bcdf7 | 7409 | |
a8b3b0b6 CR |
7410 | if (result == NULL) |
7411 | { | |
6de7294f | 7412 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7413 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7414 | goto cleanup; |
a8b3b0b6 CR |
7415 | sym->result = sym; |
7416 | } | |
7417 | else | |
7418 | { | |
6de7294f | 7419 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7420 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7421 | goto cleanup; |
a8b3b0b6 CR |
7422 | sym->result = result; |
7423 | } | |
7424 | ||
c3005b0f | 7425 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 7426 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 7427 | |
a8b3b0b6 CR |
7428 | return MATCH_YES; |
7429 | } | |
6de9cd9a DN |
7430 | |
7431 | cleanup: | |
63645982 | 7432 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7433 | return m; |
7434 | } | |
7435 | ||
636dff67 SK |
7436 | |
7437 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7438 | pass the name of the entry, rather than the gfc_current_block name, and | |
7439 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7440 | |
7441 | static bool | |
3a43b5b3 TB |
7442 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7443 | locus *where) | |
68ea355b PT |
7444 | { |
7445 | gfc_gsymbol *s; | |
32e8bb8e | 7446 | enum gfc_symbol_type type; |
68ea355b | 7447 | |
7389bce6 | 7448 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7449 | |
f11de7c5 TB |
7450 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7451 | name is a global identifier. */ | |
7452 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7453 | { |
55b9c612 | 7454 | s = gfc_get_gsymbol (name, false); |
f11de7c5 TB |
7455 | |
7456 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7457 | { | |
3a43b5b3 | 7458 | gfc_global_used (s, where); |
f11de7c5 TB |
7459 | return false; |
7460 | } | |
7461 | else | |
7462 | { | |
7463 | s->type = type; | |
77f8682b | 7464 | s->sym_name = name; |
3a43b5b3 | 7465 | s->where = *where; |
f11de7c5 TB |
7466 | s->defined = 1; |
7467 | s->ns = gfc_current_ns; | |
7468 | } | |
68ea355b | 7469 | } |
f11de7c5 TB |
7470 | |
7471 | /* Don't add the symbol multiple times. */ | |
7472 | if (binding_label | |
7473 | && (!gfc_notification_std (GFC_STD_F2008) | |
7474 | || strcmp (name, binding_label) != 0)) | |
7475 | { | |
55b9c612 | 7476 | s = gfc_get_gsymbol (binding_label, true); |
f11de7c5 TB |
7477 | |
7478 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7479 | { | |
3a43b5b3 | 7480 | gfc_global_used (s, where); |
f11de7c5 TB |
7481 | return false; |
7482 | } | |
7483 | else | |
7484 | { | |
7485 | s->type = type; | |
77f8682b | 7486 | s->sym_name = name; |
f11de7c5 | 7487 | s->binding_label = binding_label; |
3a43b5b3 | 7488 | s->where = *where; |
f11de7c5 TB |
7489 | s->defined = 1; |
7490 | s->ns = gfc_current_ns; | |
7491 | } | |
7492 | } | |
7493 | ||
7494 | return true; | |
68ea355b | 7495 | } |
6de9cd9a | 7496 | |
636dff67 | 7497 | |
6de9cd9a DN |
7498 | /* Match an ENTRY statement. */ |
7499 | ||
7500 | match | |
7501 | gfc_match_entry (void) | |
7502 | { | |
3d79abbd PB |
7503 | gfc_symbol *proc; |
7504 | gfc_symbol *result; | |
7505 | gfc_symbol *entry; | |
6de9cd9a DN |
7506 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7507 | gfc_compile_state state; | |
7508 | match m; | |
3d79abbd | 7509 | gfc_entry_list *el; |
c96cfa49 | 7510 | locus old_loc; |
1a492601 | 7511 | bool module_procedure; |
bc3e7a8c TB |
7512 | char peek_char; |
7513 | match is_bind_c; | |
6de9cd9a DN |
7514 | |
7515 | m = gfc_match_name (name); | |
7516 | if (m != MATCH_YES) | |
7517 | return m; | |
7518 | ||
524af0d6 | 7519 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7520 | return MATCH_ERROR; |
7521 | ||
3d79abbd | 7522 | state = gfc_current_state (); |
4c93c95a | 7523 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7524 | { |
4c93c95a FXC |
7525 | switch (state) |
7526 | { | |
7527 | case COMP_PROGRAM: | |
7528 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7529 | break; | |
7530 | case COMP_MODULE: | |
7531 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7532 | break; | |
4668d6f9 PT |
7533 | case COMP_SUBMODULE: |
7534 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7535 | break; | |
4c93c95a | 7536 | case COMP_BLOCK_DATA: |
636dff67 SK |
7537 | gfc_error ("ENTRY statement at %C cannot appear within " |
7538 | "a BLOCK DATA"); | |
4c93c95a FXC |
7539 | break; |
7540 | case COMP_INTERFACE: | |
636dff67 SK |
7541 | gfc_error ("ENTRY statement at %C cannot appear within " |
7542 | "an INTERFACE"); | |
4c93c95a | 7543 | break; |
f6288c24 FR |
7544 | case COMP_STRUCTURE: |
7545 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7546 | "a STRUCTURE block"); | |
7547 | break; | |
4c93c95a | 7548 | case COMP_DERIVED: |
636dff67 SK |
7549 | gfc_error ("ENTRY statement at %C cannot appear within " |
7550 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7551 | break; |
7552 | case COMP_IF: | |
636dff67 SK |
7553 | gfc_error ("ENTRY statement at %C cannot appear within " |
7554 | "an IF-THEN block"); | |
4c93c95a FXC |
7555 | break; |
7556 | case COMP_DO: | |
8c6a85e3 | 7557 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7558 | gfc_error ("ENTRY statement at %C cannot appear within " |
7559 | "a DO block"); | |
4c93c95a FXC |
7560 | break; |
7561 | case COMP_SELECT: | |
636dff67 SK |
7562 | gfc_error ("ENTRY statement at %C cannot appear within " |
7563 | "a SELECT block"); | |
4c93c95a FXC |
7564 | break; |
7565 | case COMP_FORALL: | |
636dff67 SK |
7566 | gfc_error ("ENTRY statement at %C cannot appear within " |
7567 | "a FORALL block"); | |
4c93c95a FXC |
7568 | break; |
7569 | case COMP_WHERE: | |
636dff67 SK |
7570 | gfc_error ("ENTRY statement at %C cannot appear within " |
7571 | "a WHERE block"); | |
4c93c95a FXC |
7572 | break; |
7573 | case COMP_CONTAINS: | |
636dff67 SK |
7574 | gfc_error ("ENTRY statement at %C cannot appear within " |
7575 | "a contained subprogram"); | |
4c93c95a FXC |
7576 | break; |
7577 | default: | |
fce523bf | 7578 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7579 | } |
3d79abbd PB |
7580 | return MATCH_ERROR; |
7581 | } | |
7582 | ||
5f0ba745 SK |
7583 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7584 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7585 | { | |
7586 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7587 | return MATCH_ERROR; | |
7588 | } | |
7589 | ||
1a492601 | 7590 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7591 | && gfc_current_ns->parent->proc_name |
7592 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7593 | == FL_MODULE; | |
1a492601 | 7594 | |
3d79abbd PB |
7595 | if (gfc_current_ns->parent != NULL |
7596 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7597 | && !module_procedure) |
3d79abbd PB |
7598 | { |
7599 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7600 | "contained procedure"); | |
7601 | return MATCH_ERROR; | |
7602 | } | |
7603 | ||
1a492601 PT |
7604 | /* Module function entries need special care in get_proc_name |
7605 | because previous references within the function will have | |
7606 | created symbols attached to the current namespace. */ | |
7607 | if (get_proc_name (name, &entry, | |
7608 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7609 | && module_procedure)) |
6de9cd9a DN |
7610 | return MATCH_ERROR; |
7611 | ||
3d79abbd PB |
7612 | proc = gfc_current_block (); |
7613 | ||
bc3e7a8c TB |
7614 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7615 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7616 | not allowed for procedures. */ | |
7617 | if (entry->attr.is_bind_c == 1) | |
7618 | { | |
51992f15 SK |
7619 | locus loc; |
7620 | ||
bc3e7a8c | 7621 | entry->attr.is_bind_c = 0; |
51992f15 SK |
7622 | |
7623 | loc = entry->old_symbol != NULL | |
0313a84a | 7624 | ? entry->old_symbol->declared_at : gfc_current_locus; |
51992f15 SK |
7625 | gfc_error_now ("BIND(C) attribute at %L can only be used for " |
7626 | "variables or common blocks", &loc); | |
7627 | } | |
f5acf0f2 | 7628 | |
bc3e7a8c TB |
7629 | /* Check what next non-whitespace character is so we can tell if there |
7630 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7631 | old_loc = gfc_current_locus; |
bc3e7a8c | 7632 | gfc_gobble_whitespace (); |
8fc541d3 | 7633 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7634 | |
3d79abbd | 7635 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7636 | { |
6de9cd9a DN |
7637 | m = gfc_match_formal_arglist (entry, 0, 1); |
7638 | if (m != MATCH_YES) | |
7639 | return MATCH_ERROR; | |
7640 | ||
1eabf70a TB |
7641 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7642 | never be an internal procedure. */ | |
7643 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7644 | if (is_bind_c == MATCH_ERROR) |
7645 | return MATCH_ERROR; | |
7646 | if (is_bind_c == MATCH_YES) | |
7647 | { | |
7648 | if (peek_char != '(') | |
7649 | { | |
7650 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7651 | return MATCH_ERROR; | |
7652 | } | |
89508a3f SK |
7653 | |
7654 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, | |
7655 | &(entry->declared_at), 1)) | |
7656 | return MATCH_ERROR; | |
0a524296 | 7657 | |
bc3e7a8c TB |
7658 | } |
7659 | ||
f11de7c5 | 7660 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7661 | && !add_global_entry (name, entry->binding_label, true, |
7662 | &old_loc)) | |
f11de7c5 TB |
7663 | return MATCH_ERROR; |
7664 | ||
7665 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7666 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7667 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7668 | return MATCH_ERROR; |
3d79abbd PB |
7669 | } |
7670 | else | |
7671 | { | |
c96cfa49 | 7672 | /* An entry in a function. |
636dff67 SK |
7673 | We need to take special care because writing |
7674 | ENTRY f() | |
7675 | as | |
7676 | ENTRY f | |
7677 | is allowed, whereas | |
7678 | ENTRY f() RESULT (r) | |
7679 | can't be written as | |
7680 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7681 | if (gfc_match_eos () == MATCH_YES) |
7682 | { | |
7683 | gfc_current_locus = old_loc; | |
7684 | /* Match the empty argument list, and add the interface to | |
7685 | the symbol. */ | |
7686 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7687 | } | |
7688 | else | |
7689 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7690 | ||
6de9cd9a DN |
7691 | if (m != MATCH_YES) |
7692 | return MATCH_ERROR; | |
7693 | ||
6de9cd9a DN |
7694 | result = NULL; |
7695 | ||
7696 | if (gfc_match_eos () == MATCH_YES) | |
7697 | { | |
524af0d6 JB |
7698 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7699 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7700 | return MATCH_ERROR; |
7701 | ||
d198b59a | 7702 | entry->result = entry; |
6de9cd9a DN |
7703 | } |
7704 | else | |
7705 | { | |
bc3e7a8c | 7706 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7707 | if (m == MATCH_NO) |
7708 | gfc_syntax_error (ST_ENTRY); | |
7709 | if (m != MATCH_YES) | |
7710 | return MATCH_ERROR; | |
7711 | ||
bc3e7a8c TB |
7712 | if (result) |
7713 | { | |
524af0d6 JB |
7714 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7715 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7716 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7717 | return MATCH_ERROR; |
7718 | entry->result = result; | |
7719 | } | |
7720 | else | |
7721 | { | |
524af0d6 JB |
7722 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7723 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7724 | return MATCH_ERROR; |
7725 | entry->result = entry; | |
7726 | } | |
6de9cd9a | 7727 | } |
f11de7c5 TB |
7728 | |
7729 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7730 | && !add_global_entry (name, entry->binding_label, false, |
7731 | &old_loc)) | |
f11de7c5 | 7732 | return MATCH_ERROR; |
6de9cd9a DN |
7733 | } |
7734 | ||
7735 | if (gfc_match_eos () != MATCH_YES) | |
7736 | { | |
7737 | gfc_syntax_error (ST_ENTRY); | |
7738 | return MATCH_ERROR; | |
7739 | } | |
7740 | ||
89508a3f SK |
7741 | /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */ |
7742 | if (proc->attr.elemental && entry->attr.is_bind_c) | |
7743 | { | |
7744 | gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an " | |
7745 | "elemental procedure", &entry->declared_at); | |
7746 | return MATCH_ERROR; | |
7747 | } | |
7748 | ||
3d79abbd PB |
7749 | entry->attr.recursive = proc->attr.recursive; |
7750 | entry->attr.elemental = proc->attr.elemental; | |
7751 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7752 | |
3d79abbd PB |
7753 | el = gfc_get_entry_list (); |
7754 | el->sym = entry; | |
7755 | el->next = gfc_current_ns->entries; | |
7756 | gfc_current_ns->entries = el; | |
7757 | if (el->next) | |
7758 | el->id = el->next->id + 1; | |
7759 | else | |
7760 | el->id = 1; | |
6de9cd9a | 7761 | |
3d79abbd PB |
7762 | new_st.op = EXEC_ENTRY; |
7763 | new_st.ext.entry = el; | |
7764 | ||
7765 | return MATCH_YES; | |
6de9cd9a DN |
7766 | } |
7767 | ||
7768 | ||
7769 | /* Match a subroutine statement, including optional prefixes. */ | |
7770 | ||
7771 | match | |
7772 | gfc_match_subroutine (void) | |
7773 | { | |
7774 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7775 | gfc_symbol *sym; | |
7776 | match m; | |
a8b3b0b6 CR |
7777 | match is_bind_c; |
7778 | char peek_char; | |
1eabf70a | 7779 | bool allow_binding_name; |
f28c46cd | 7780 | locus loc; |
6de9cd9a DN |
7781 | |
7782 | if (gfc_current_state () != COMP_NONE | |
7783 | && gfc_current_state () != COMP_INTERFACE | |
7784 | && gfc_current_state () != COMP_CONTAINS) | |
7785 | return MATCH_NO; | |
7786 | ||
1c8bcdf7 | 7787 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7788 | if (m != MATCH_YES) |
7789 | return m; | |
7790 | ||
7791 | m = gfc_match ("subroutine% %n", name); | |
7792 | if (m != MATCH_YES) | |
7793 | return m; | |
7794 | ||
1a492601 | 7795 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7796 | return MATCH_ERROR; |
3070bab4 | 7797 | |
7fcd5ad5 | 7798 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7799 | the symbol existed before. */ |
7fcd5ad5 TB |
7800 | sym->declared_at = gfc_current_locus; |
7801 | ||
4668d6f9 PT |
7802 | if (current_attr.module_procedure) |
7803 | sym->attr.module_procedure = 1; | |
7804 | ||
524af0d6 | 7805 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7806 | sym = sym->result; |
7807 | ||
6de9cd9a DN |
7808 | gfc_new_block = sym; |
7809 | ||
a8b3b0b6 | 7810 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7811 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7812 | gfc_gobble_whitespace (); |
8fc541d3 | 7813 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7814 | |
524af0d6 | 7815 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7816 | return MATCH_ERROR; |
7817 | ||
7818 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7819 | return MATCH_ERROR; | |
7820 | ||
a8b3b0b6 CR |
7821 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7822 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7823 | not allowed for procedures. */ | |
7824 | if (sym->attr.is_bind_c == 1) | |
7825 | { | |
7826 | sym->attr.is_bind_c = 0; | |
51992f15 SK |
7827 | |
7828 | if (gfc_state_stack->previous | |
7829 | && gfc_state_stack->previous->state != COMP_SUBMODULE) | |
7830 | { | |
7831 | locus loc; | |
7832 | loc = sym->old_symbol != NULL | |
7833 | ? sym->old_symbol->declared_at : gfc_current_locus; | |
7834 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7835 | "variables or common blocks", &loc); | |
7836 | } | |
a8b3b0b6 | 7837 | } |
1eabf70a TB |
7838 | |
7839 | /* C binding names are not allowed for internal procedures. */ | |
7840 | if (gfc_current_state () == COMP_CONTAINS | |
7841 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7842 | allow_binding_name = false; | |
7843 | else | |
7844 | allow_binding_name = true; | |
7845 | ||
a8b3b0b6 CR |
7846 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7847 | so, then we need to make sure it's all correct. If it doesn't, | |
7848 | we still need to continue matching the rest of the subroutine line. */ | |
f28c46cd SK |
7849 | gfc_gobble_whitespace (); |
7850 | loc = gfc_current_locus; | |
1eabf70a | 7851 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7852 | if (is_bind_c == MATCH_ERROR) |
7853 | { | |
7854 | /* There was an attempt at the bind(c), but it was wrong. An | |
7855 | error message should have been printed w/in the gfc_match_bind_c | |
7856 | so here we'll just return the MATCH_ERROR. */ | |
7857 | return MATCH_ERROR; | |
7858 | } | |
7859 | ||
7860 | if (is_bind_c == MATCH_YES) | |
7861 | { | |
f28c46cd SK |
7862 | gfc_formal_arglist *arg; |
7863 | ||
1eabf70a | 7864 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7865 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7866 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7867 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7868 | "at %L may not be specified for an internal " | |
7869 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7870 | return MATCH_ERROR; |
7871 | ||
a8b3b0b6 CR |
7872 | if (peek_char != '(') |
7873 | { | |
7874 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7875 | return MATCH_ERROR; | |
7876 | } | |
f28c46cd | 7877 | |
51992f15 SK |
7878 | /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module |
7879 | subprogram and a binding label is specified, it shall be the | |
7880 | same as the binding label specified in the corresponding module | |
7881 | procedure interface body. */ | |
7882 | if (sym->attr.module_procedure && sym->old_symbol | |
7883 | && strcmp (sym->name, sym->old_symbol->name) == 0 | |
7884 | && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0) | |
7885 | { | |
7886 | const char *null = "NULL", *s1, *s2; | |
7887 | s1 = sym->binding_label; | |
7888 | if (!s1) s1 = null; | |
7889 | s2 = sym->old_symbol->binding_label; | |
7890 | if (!s2) s2 = null; | |
7891 | gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2); | |
7892 | sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */ | |
7893 | return MATCH_ERROR; | |
7894 | } | |
7895 | ||
f28c46cd SK |
7896 | /* Scan the dummy arguments for an alternate return. */ |
7897 | for (arg = sym->formal; arg; arg = arg->next) | |
7898 | if (!arg->sym) | |
7899 | { | |
7900 | gfc_error ("Alternate return dummy argument cannot appear in a " | |
7901 | "SUBROUTINE with the BIND(C) attribute at %L", &loc); | |
7902 | return MATCH_ERROR; | |
7903 | } | |
7904 | ||
7905 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
7906 | return MATCH_ERROR; |
7907 | } | |
f5acf0f2 | 7908 | |
6de9cd9a DN |
7909 | if (gfc_match_eos () != MATCH_YES) |
7910 | { | |
7911 | gfc_syntax_error (ST_SUBROUTINE); | |
7912 | return MATCH_ERROR; | |
7913 | } | |
7914 | ||
524af0d6 | 7915 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7916 | { |
7917 | if(!sym->attr.module_procedure) | |
7918 | return MATCH_ERROR; | |
7919 | else | |
7920 | gfc_error_check (); | |
7921 | } | |
6de9cd9a | 7922 | |
c3005b0f | 7923 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7924 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7925 | |
6de9cd9a DN |
7926 | return MATCH_YES; |
7927 | } | |
7928 | ||
7929 | ||
3b37ccd4 FXC |
7930 | /* Check that the NAME identifier in a BIND attribute or statement |
7931 | is conform to C identifier rules. */ | |
7932 | ||
7933 | match | |
7934 | check_bind_name_identifier (char **name) | |
7935 | { | |
7936 | char *n = *name, *p; | |
7937 | ||
7938 | /* Remove leading spaces. */ | |
7939 | while (*n == ' ') | |
7940 | n++; | |
7941 | ||
7942 | /* On an empty string, free memory and set name to NULL. */ | |
7943 | if (*n == '\0') | |
7944 | { | |
7945 | free (*name); | |
7946 | *name = NULL; | |
7947 | return MATCH_YES; | |
7948 | } | |
7949 | ||
7950 | /* Remove trailing spaces. */ | |
7951 | p = n + strlen(n) - 1; | |
7952 | while (*p == ' ') | |
7953 | *(p--) = '\0'; | |
7954 | ||
7955 | /* Insert the identifier into the symbol table. */ | |
7956 | p = xstrdup (n); | |
7957 | free (*name); | |
7958 | *name = p; | |
7959 | ||
7960 | /* Now check that identifier is valid under C rules. */ | |
7961 | if (ISDIGIT (*p)) | |
7962 | { | |
7963 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7964 | return MATCH_ERROR; | |
7965 | } | |
7966 | ||
7967 | for (; *p; p++) | |
7968 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7969 | { | |
7970 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7971 | return MATCH_ERROR; | |
7972 | } | |
7973 | ||
7974 | return MATCH_YES; | |
7975 | } | |
7976 | ||
7977 | ||
a8b3b0b6 CR |
7978 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7979 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7980 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7981 | encounter the BIND(C) before the declaration itself. Return |
7982 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7983 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7984 | or MATCH_YES if the specifier was correct and the binding label and | |
7985 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7986 | current_ts. If allow_binding_name is false, no binding name may be |
7987 | given. */ | |
a8b3b0b6 CR |
7988 | |
7989 | match | |
1eabf70a | 7990 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7991 | { |
3b37ccd4 FXC |
7992 | char *binding_label = NULL; |
7993 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7994 | |
f5acf0f2 | 7995 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7996 | specifier or not. */ |
7997 | has_name_equals = 0; | |
7998 | ||
a8b3b0b6 CR |
7999 | /* This much we have to be able to match, in this order, if |
8000 | there is a bind(c) label. */ | |
8001 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
8002 | return MATCH_NO; | |
8003 | ||
8004 | /* Now see if there is a binding label, or if we've reached the | |
8005 | end of the bind(c) attribute without one. */ | |
8006 | if (gfc_match_char (',') == MATCH_YES) | |
8007 | { | |
8008 | if (gfc_match (" name = ") != MATCH_YES) | |
8009 | { | |
8010 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
8011 | "at %C"); | |
8012 | /* should give an error message here */ | |
8013 | return MATCH_ERROR; | |
8014 | } | |
8015 | ||
8016 | has_name_equals = 1; | |
8017 | ||
3b37ccd4 FXC |
8018 | if (gfc_match_init_expr (&e) != MATCH_YES) |
8019 | { | |
8020 | gfc_free_expr (e); | |
8021 | return MATCH_ERROR; | |
8022 | } | |
f5acf0f2 | 8023 | |
3b37ccd4 | 8024 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 8025 | { |
3b37ccd4 FXC |
8026 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
8027 | gfc_free_expr (e); | |
8028 | return MATCH_ERROR; | |
a8b3b0b6 | 8029 | } |
3b37ccd4 FXC |
8030 | |
8031 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
8032 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 8033 | { |
3b37ccd4 FXC |
8034 | gfc_error ("NAME= specifier at %C should be a scalar of " |
8035 | "default character kind"); | |
8036 | gfc_free_expr(e); | |
8037 | return MATCH_ERROR; | |
a8b3b0b6 | 8038 | } |
3b37ccd4 FXC |
8039 | |
8040 | // Get a C string from the Fortran string constant | |
8041 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
8042 | e->value.character.length); | |
8043 | gfc_free_expr(e); | |
8044 | ||
8045 | // Check that it is valid (old gfc_match_name_C) | |
8046 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
8047 | return MATCH_ERROR; | |
8048 | } | |
a8b3b0b6 CR |
8049 | |
8050 | /* Get the required right paren. */ | |
8051 | if (gfc_match_char (')') != MATCH_YES) | |
8052 | { | |
8053 | gfc_error ("Missing closing paren for binding label at %C"); | |
8054 | return MATCH_ERROR; | |
8055 | } | |
8056 | ||
1eabf70a TB |
8057 | if (has_name_equals && !allow_binding_name) |
8058 | { | |
8059 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
8060 | return MATCH_ERROR; | |
8061 | } | |
8062 | ||
8063 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
8064 | { | |
8065 | gfc_error ("For dummy procedure %s, no binding name is " | |
8066 | "allowed in BIND(C) at %C", sym->name); | |
8067 | return MATCH_ERROR; | |
8068 | } | |
8069 | ||
8070 | ||
a8b3b0b6 CR |
8071 | /* Save the binding label to the symbol. If sym is null, we're |
8072 | probably matching the typespec attributes of a declaration and | |
8073 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 8074 | if (binding_label) |
a8b3b0b6 CR |
8075 | { |
8076 | if (sym != NULL) | |
62603fae | 8077 | sym->binding_label = binding_label; |
a8b3b0b6 | 8078 | else |
62603fae | 8079 | curr_binding_label = binding_label; |
a8b3b0b6 | 8080 | } |
1eabf70a | 8081 | else if (allow_binding_name) |
a8b3b0b6 CR |
8082 | { |
8083 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
8084 | can set the label for it here. |
8085 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 8086 | created. */ |
a8b3b0b6 | 8087 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 8088 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 8089 | } |
9e1d712c | 8090 | |
129d15a3 JW |
8091 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
8092 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
8093 | { |
8094 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
8095 | return MATCH_ERROR; | |
8096 | } | |
8097 | ||
a8b3b0b6 CR |
8098 | return MATCH_YES; |
8099 | } | |
8100 | ||
8101 | ||
1f2959f0 | 8102 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
8103 | |
8104 | static int | |
8105 | contained_procedure (void) | |
8106 | { | |
083de129 | 8107 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 8108 | |
083de129 TB |
8109 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
8110 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
8111 | return 1; | |
ddc9ce91 TS |
8112 | |
8113 | return 0; | |
8114 | } | |
8115 | ||
d51347f9 | 8116 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
8117 | interoperable with the corresponding C enumeration type, making |
8118 | sure that -fshort-enums is honored. */ | |
8119 | ||
8120 | static void | |
8121 | set_enum_kind(void) | |
8122 | { | |
8123 | enumerator_history *current_history = NULL; | |
8124 | int kind; | |
8125 | int i; | |
8126 | ||
8127 | if (max_enum == NULL || enum_history == NULL) | |
8128 | return; | |
8129 | ||
cab129d1 | 8130 | if (!flag_short_enums) |
d51347f9 TB |
8131 | return; |
8132 | ||
25d8f0a2 TS |
8133 | i = 0; |
8134 | do | |
8135 | { | |
8136 | kind = gfc_integer_kinds[i++].kind; | |
8137 | } | |
d51347f9 | 8138 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
8139 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
8140 | kind) != ARITH_OK); | |
8141 | ||
8142 | current_history = enum_history; | |
8143 | while (current_history != NULL) | |
8144 | { | |
8145 | current_history->sym->ts.kind = kind; | |
8146 | current_history = current_history->next; | |
8147 | } | |
8148 | } | |
8149 | ||
636dff67 | 8150 | |
6de9cd9a | 8151 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
8152 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
8153 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
8154 | |
8155 | match | |
636dff67 | 8156 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
8157 | { |
8158 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8159 | gfc_compile_state state; | |
8160 | locus old_loc; | |
8161 | const char *block_name; | |
8162 | const char *target; | |
ddc9ce91 | 8163 | int eos_ok; |
6de9cd9a | 8164 | match m; |
0cab6b73 TK |
8165 | gfc_namespace *parent_ns, *ns, *prev_ns; |
8166 | gfc_namespace **nsp; | |
63af1586 | 8167 | bool abreviated_modproc_decl = false; |
874108a9 | 8168 | bool got_matching_end = false; |
6de9cd9a | 8169 | |
63645982 | 8170 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8171 | if (gfc_match ("end") != MATCH_YES) |
8172 | return MATCH_NO; | |
8173 | ||
8174 | state = gfc_current_state (); | |
636dff67 SK |
8175 | block_name = gfc_current_block () == NULL |
8176 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 8177 | |
03af1e4c | 8178 | switch (state) |
6de9cd9a | 8179 | { |
03af1e4c DK |
8180 | case COMP_ASSOCIATE: |
8181 | case COMP_BLOCK: | |
2eb3745a | 8182 | if (gfc_str_startswith (block_name, "block@")) |
03af1e4c DK |
8183 | block_name = NULL; |
8184 | break; | |
8185 | ||
8186 | case COMP_CONTAINS: | |
8187 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 8188 | state = gfc_state_stack->previous->state; |
636dff67 SK |
8189 | block_name = gfc_state_stack->previous->sym == NULL |
8190 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
8191 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
8192 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
8193 | break; |
8194 | ||
8195 | default: | |
8196 | break; | |
6de9cd9a DN |
8197 | } |
8198 | ||
63af1586 PT |
8199 | if (!abreviated_modproc_decl) |
8200 | abreviated_modproc_decl = gfc_current_block () | |
8201 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 8202 | |
6de9cd9a DN |
8203 | switch (state) |
8204 | { | |
8205 | case COMP_NONE: | |
8206 | case COMP_PROGRAM: | |
8207 | *st = ST_END_PROGRAM; | |
8208 | target = " program"; | |
ddc9ce91 | 8209 | eos_ok = 1; |
6de9cd9a DN |
8210 | break; |
8211 | ||
8212 | case COMP_SUBROUTINE: | |
8213 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 8214 | if (!abreviated_modproc_decl) |
6de9cd9a | 8215 | target = " subroutine"; |
4668d6f9 PT |
8216 | else |
8217 | target = " procedure"; | |
ddc9ce91 | 8218 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
8219 | break; |
8220 | ||
8221 | case COMP_FUNCTION: | |
8222 | *st = ST_END_FUNCTION; | |
4668d6f9 | 8223 | if (!abreviated_modproc_decl) |
6de9cd9a | 8224 | target = " function"; |
4668d6f9 PT |
8225 | else |
8226 | target = " procedure"; | |
ddc9ce91 | 8227 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
8228 | break; |
8229 | ||
8230 | case COMP_BLOCK_DATA: | |
8231 | *st = ST_END_BLOCK_DATA; | |
8232 | target = " block data"; | |
ddc9ce91 | 8233 | eos_ok = 1; |
6de9cd9a DN |
8234 | break; |
8235 | ||
8236 | case COMP_MODULE: | |
8237 | *st = ST_END_MODULE; | |
8238 | target = " module"; | |
ddc9ce91 | 8239 | eos_ok = 1; |
6de9cd9a DN |
8240 | break; |
8241 | ||
4668d6f9 PT |
8242 | case COMP_SUBMODULE: |
8243 | *st = ST_END_SUBMODULE; | |
8244 | target = " submodule"; | |
8245 | eos_ok = 1; | |
8246 | break; | |
8247 | ||
6de9cd9a DN |
8248 | case COMP_INTERFACE: |
8249 | *st = ST_END_INTERFACE; | |
8250 | target = " interface"; | |
ddc9ce91 | 8251 | eos_ok = 0; |
6de9cd9a DN |
8252 | break; |
8253 | ||
f6288c24 FR |
8254 | case COMP_MAP: |
8255 | *st = ST_END_MAP; | |
8256 | target = " map"; | |
8257 | eos_ok = 0; | |
8258 | break; | |
8259 | ||
8260 | case COMP_UNION: | |
8261 | *st = ST_END_UNION; | |
8262 | target = " union"; | |
8263 | eos_ok = 0; | |
8264 | break; | |
8265 | ||
8266 | case COMP_STRUCTURE: | |
8267 | *st = ST_END_STRUCTURE; | |
8268 | target = " structure"; | |
8269 | eos_ok = 0; | |
8270 | break; | |
8271 | ||
6de9cd9a | 8272 | case COMP_DERIVED: |
30b608eb | 8273 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
8274 | *st = ST_END_TYPE; |
8275 | target = " type"; | |
ddc9ce91 | 8276 | eos_ok = 0; |
6de9cd9a DN |
8277 | break; |
8278 | ||
03af1e4c DK |
8279 | case COMP_ASSOCIATE: |
8280 | *st = ST_END_ASSOCIATE; | |
8281 | target = " associate"; | |
8282 | eos_ok = 0; | |
8283 | break; | |
8284 | ||
9abe5e56 DK |
8285 | case COMP_BLOCK: |
8286 | *st = ST_END_BLOCK; | |
8287 | target = " block"; | |
8288 | eos_ok = 0; | |
8289 | break; | |
8290 | ||
6de9cd9a DN |
8291 | case COMP_IF: |
8292 | *st = ST_ENDIF; | |
8293 | target = " if"; | |
ddc9ce91 | 8294 | eos_ok = 0; |
6de9cd9a DN |
8295 | break; |
8296 | ||
8297 | case COMP_DO: | |
8c6a85e3 | 8298 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
8299 | *st = ST_ENDDO; |
8300 | target = " do"; | |
ddc9ce91 | 8301 | eos_ok = 0; |
6de9cd9a DN |
8302 | break; |
8303 | ||
d0a4a61c TB |
8304 | case COMP_CRITICAL: |
8305 | *st = ST_END_CRITICAL; | |
8306 | target = " critical"; | |
8307 | eos_ok = 0; | |
8308 | break; | |
8309 | ||
6de9cd9a | 8310 | case COMP_SELECT: |
cf2b3c22 | 8311 | case COMP_SELECT_TYPE: |
70570ec1 | 8312 | case COMP_SELECT_RANK: |
6de9cd9a DN |
8313 | *st = ST_END_SELECT; |
8314 | target = " select"; | |
ddc9ce91 | 8315 | eos_ok = 0; |
6de9cd9a DN |
8316 | break; |
8317 | ||
8318 | case COMP_FORALL: | |
8319 | *st = ST_END_FORALL; | |
8320 | target = " forall"; | |
ddc9ce91 | 8321 | eos_ok = 0; |
6de9cd9a DN |
8322 | break; |
8323 | ||
8324 | case COMP_WHERE: | |
8325 | *st = ST_END_WHERE; | |
8326 | target = " where"; | |
ddc9ce91 | 8327 | eos_ok = 0; |
6de9cd9a DN |
8328 | break; |
8329 | ||
25d8f0a2 TS |
8330 | case COMP_ENUM: |
8331 | *st = ST_END_ENUM; | |
8332 | target = " enum"; | |
8333 | eos_ok = 0; | |
8334 | last_initializer = NULL; | |
8335 | set_enum_kind (); | |
8336 | gfc_free_enum_history (); | |
8337 | break; | |
8338 | ||
6de9cd9a DN |
8339 | default: |
8340 | gfc_error ("Unexpected END statement at %C"); | |
8341 | goto cleanup; | |
8342 | } | |
8343 | ||
3a43b5b3 | 8344 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8345 | if (gfc_match_eos () == MATCH_YES) |
8346 | { | |
272001a2 TB |
8347 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8348 | { | |
524af0d6 | 8349 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 8350 | "instead of %s statement at %L", |
4668d6f9 PT |
8351 | abreviated_modproc_decl ? "END PROCEDURE" |
8352 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
8353 | goto cleanup; |
8354 | } | |
8355 | else if (!eos_ok) | |
6de9cd9a | 8356 | { |
66e4ab31 | 8357 | /* We would have required END [something]. */ |
59ce85b5 TS |
8358 | gfc_error ("%s statement expected at %L", |
8359 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
8360 | goto cleanup; |
8361 | } | |
8362 | ||
8363 | return MATCH_YES; | |
8364 | } | |
8365 | ||
8366 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8367 | if (gfc_match (target) != MATCH_YES) | |
8368 | { | |
4668d6f9 PT |
8369 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8370 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
8371 | goto cleanup; |
8372 | } | |
874108a9 AV |
8373 | else |
8374 | got_matching_end = true; | |
6de9cd9a | 8375 | |
3a43b5b3 | 8376 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8377 | /* If we're at the end, make sure a block name wasn't required. */ |
8378 | if (gfc_match_eos () == MATCH_YES) | |
8379 | { | |
8380 | ||
690af379 | 8381 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 8382 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 8383 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
8384 | return MATCH_YES; |
8385 | ||
9abe5e56 | 8386 | if (!block_name) |
6de9cd9a DN |
8387 | return MATCH_YES; |
8388 | ||
c4100eae | 8389 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 8390 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
8391 | |
8392 | return MATCH_ERROR; | |
8393 | } | |
8394 | ||
8395 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8396 | if (*st == ST_END_INTERFACE) | |
8397 | return gfc_match_end_interface (); | |
8398 | ||
66e4ab31 SK |
8399 | /* We haven't hit the end of statement, so what is left must be an |
8400 | end-name. */ | |
6de9cd9a DN |
8401 | m = gfc_match_space (); |
8402 | if (m == MATCH_YES) | |
8403 | m = gfc_match_name (name); | |
8404 | ||
8405 | if (m == MATCH_NO) | |
8406 | gfc_error ("Expected terminating name at %C"); | |
8407 | if (m != MATCH_YES) | |
8408 | goto cleanup; | |
8409 | ||
8410 | if (block_name == NULL) | |
8411 | goto syntax; | |
8412 | ||
3d5dc929 PT |
8413 | /* We have to pick out the declared submodule name from the composite |
8414 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8415 | if (state == COMP_SUBMODULE) | |
8416 | block_name = strchr (block_name, '.') + 1; | |
8417 | ||
3070bab4 | 8418 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 8419 | { |
c4100eae | 8420 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
8421 | gfc_ascii_statement (*st)); |
8422 | goto cleanup; | |
8423 | } | |
3070bab4 JW |
8424 | /* Procedure pointer as function result. */ |
8425 | else if (strcmp (block_name, "ppr@") == 0 | |
8426 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8427 | { | |
c4100eae | 8428 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
8429 | gfc_current_block ()->ns->proc_name->name, |
8430 | gfc_ascii_statement (*st)); | |
8431 | goto cleanup; | |
8432 | } | |
6de9cd9a DN |
8433 | |
8434 | if (gfc_match_eos () == MATCH_YES) | |
8435 | return MATCH_YES; | |
8436 | ||
8437 | syntax: | |
8438 | gfc_syntax_error (*st); | |
8439 | ||
8440 | cleanup: | |
63645982 | 8441 | gfc_current_locus = old_loc; |
0cab6b73 TK |
8442 | |
8443 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8444 | Remove it from the parent namespace's sibling list. */ | |
8445 | ||
874108a9 | 8446 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
8447 | { |
8448 | parent_ns = gfc_current_ns->parent; | |
8449 | ||
8450 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8451 | ||
8452 | prev_ns = NULL; | |
8453 | ns = *nsp; | |
8454 | while (ns) | |
8455 | { | |
8456 | if (ns == gfc_current_ns) | |
8457 | { | |
8458 | if (prev_ns == NULL) | |
8459 | *nsp = NULL; | |
8460 | else | |
8461 | prev_ns->sibling = ns->sibling; | |
8462 | } | |
8463 | prev_ns = ns; | |
8464 | ns = ns->sibling; | |
8465 | } | |
874108a9 | 8466 | |
0cab6b73 TK |
8467 | gfc_free_namespace (gfc_current_ns); |
8468 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
8469 | gfc_state_stack = gfc_state_stack->previous; |
8470 | state = gfc_current_state (); | |
0cab6b73 TK |
8471 | } |
8472 | ||
6de9cd9a DN |
8473 | return MATCH_ERROR; |
8474 | } | |
8475 | ||
8476 | ||
8477 | ||
8478 | /***************** Attribute declaration statements ****************/ | |
8479 | ||
8480 | /* Set the attribute of a single variable. */ | |
8481 | ||
8482 | static match | |
8483 | attr_decl1 (void) | |
8484 | { | |
8485 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8486 | gfc_array_spec *as; | |
97440db5 ML |
8487 | |
8488 | /* Workaround -Wmaybe-uninitialized false positive during | |
8489 | profiledbootstrap by initializing them. */ | |
8490 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8491 | locus var_locus; |
8492 | match m; | |
8493 | ||
8494 | as = NULL; | |
8495 | ||
8496 | m = gfc_match_name (name); | |
8497 | if (m != MATCH_YES) | |
8498 | goto cleanup; | |
8499 | ||
08a6b8e0 | 8500 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8501 | return MATCH_ERROR; |
8502 | ||
524af0d6 | 8503 | if (!check_function_name (name)) |
bb9de0c4 JW |
8504 | { |
8505 | m = MATCH_ERROR; | |
8506 | goto cleanup; | |
8507 | } | |
f5acf0f2 | 8508 | |
63645982 | 8509 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8510 | |
8511 | /* Deal with possible array specification for certain attributes. */ | |
8512 | if (current_attr.dimension | |
be59db2d | 8513 | || current_attr.codimension |
6de9cd9a DN |
8514 | || current_attr.allocatable |
8515 | || current_attr.pointer | |
8516 | || current_attr.target) | |
8517 | { | |
be59db2d TB |
8518 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8519 | !current_attr.dimension | |
8520 | && !current_attr.pointer | |
8521 | && !current_attr.target); | |
6de9cd9a DN |
8522 | if (m == MATCH_ERROR) |
8523 | goto cleanup; | |
8524 | ||
8525 | if (current_attr.dimension && m == MATCH_NO) | |
8526 | { | |
636dff67 SK |
8527 | gfc_error ("Missing array specification at %L in DIMENSION " |
8528 | "statement", &var_locus); | |
6de9cd9a DN |
8529 | m = MATCH_ERROR; |
8530 | goto cleanup; | |
8531 | } | |
8532 | ||
1283ab12 TB |
8533 | if (current_attr.dimension && sym->value) |
8534 | { | |
8535 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8536 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8537 | m = MATCH_ERROR; |
8538 | goto cleanup; | |
8539 | } | |
8540 | ||
be59db2d TB |
8541 | if (current_attr.codimension && m == MATCH_NO) |
8542 | { | |
8543 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8544 | "statement", &var_locus); | |
8545 | m = MATCH_ERROR; | |
8546 | goto cleanup; | |
8547 | } | |
8548 | ||
6de9cd9a DN |
8549 | if ((current_attr.allocatable || current_attr.pointer) |
8550 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8551 | { | |
636dff67 | 8552 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8553 | m = MATCH_ERROR; |
8554 | goto cleanup; | |
8555 | } | |
8556 | } | |
8557 | ||
2e23972e JW |
8558 | /* Update symbol table. DIMENSION attribute is set in |
8559 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8560 | to the first component, or '_data' field. */ |
d40477b4 | 8561 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8562 | { |
c9935123 SK |
8563 | /* gfc_set_array_spec sets sym->attr not CLASS_DATA(sym)->attr. Check |
8564 | for duplicate attribute here. */ | |
8565 | if (CLASS_DATA(sym)->attr.dimension == 1 && as) | |
8566 | { | |
8567 | gfc_error ("Duplicate DIMENSION attribute at %C"); | |
8568 | m = MATCH_ERROR; | |
8569 | goto cleanup; | |
8570 | } | |
8571 | ||
524af0d6 | 8572 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8573 | { |
8574 | m = MATCH_ERROR; | |
8575 | goto cleanup; | |
8576 | } | |
2e23972e JW |
8577 | } |
8578 | else | |
8579 | { | |
be59db2d | 8580 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8581 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8582 | { |
8583 | m = MATCH_ERROR; | |
8584 | goto cleanup; | |
8585 | } | |
6de9cd9a | 8586 | } |
f5acf0f2 | 8587 | |
528622fd | 8588 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8589 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8590 | { |
8591 | m = MATCH_ERROR; | |
8592 | goto cleanup; | |
8593 | } | |
6de9cd9a | 8594 | |
524af0d6 | 8595 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8596 | { |
8597 | m = MATCH_ERROR; | |
8598 | goto cleanup; | |
8599 | } | |
d51347f9 | 8600 | |
83d890b9 AL |
8601 | if (sym->attr.cray_pointee && sym->as != NULL) |
8602 | { | |
8603 | /* Fix the array spec. */ | |
f5acf0f2 | 8604 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8605 | if (m == MATCH_ERROR) |
8606 | goto cleanup; | |
8607 | } | |
6de9cd9a | 8608 | |
524af0d6 | 8609 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8610 | { |
8611 | m = MATCH_ERROR; | |
8612 | goto cleanup; | |
8613 | } | |
8614 | ||
6de9cd9a DN |
8615 | if ((current_attr.external || current_attr.intrinsic) |
8616 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8617 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8618 | { |
8619 | m = MATCH_ERROR; | |
8620 | goto cleanup; | |
8621 | } | |
8622 | ||
3070bab4 JW |
8623 | add_hidden_procptr_result (sym); |
8624 | ||
6de9cd9a DN |
8625 | return MATCH_YES; |
8626 | ||
8627 | cleanup: | |
8628 | gfc_free_array_spec (as); | |
8629 | return m; | |
8630 | } | |
8631 | ||
8632 | ||
8633 | /* Generic attribute declaration subroutine. Used for attributes that | |
8634 | just have a list of names. */ | |
8635 | ||
8636 | static match | |
8637 | attr_decl (void) | |
8638 | { | |
8639 | match m; | |
8640 | ||
8641 | /* Gobble the optional double colon, by simply ignoring the result | |
8642 | of gfc_match(). */ | |
8643 | gfc_match (" ::"); | |
8644 | ||
8645 | for (;;) | |
8646 | { | |
8647 | m = attr_decl1 (); | |
8648 | if (m != MATCH_YES) | |
8649 | break; | |
8650 | ||
8651 | if (gfc_match_eos () == MATCH_YES) | |
8652 | { | |
8653 | m = MATCH_YES; | |
8654 | break; | |
8655 | } | |
8656 | ||
8657 | if (gfc_match_char (',') != MATCH_YES) | |
8658 | { | |
8659 | gfc_error ("Unexpected character in variable list at %C"); | |
8660 | m = MATCH_ERROR; | |
8661 | break; | |
8662 | } | |
8663 | } | |
8664 | ||
8665 | return m; | |
8666 | } | |
8667 | ||
8668 | ||
83d890b9 AL |
8669 | /* This routine matches Cray Pointer declarations of the form: |
8670 | pointer ( <pointer>, <pointee> ) | |
8671 | or | |
d51347f9 TB |
8672 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8673 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8674 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8675 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8676 | the pointee. For the statement |
83d890b9 AL |
8677 | pointer (ipt, ar(10)) |
8678 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8679 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8680 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8681 | |
8682 | static match | |
8683 | cray_pointer_decl (void) | |
8684 | { | |
8685 | match m; | |
be59db2d | 8686 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8687 | gfc_symbol *cptr; /* Pointer symbol. */ |
8688 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8689 | locus var_locus; | |
8690 | bool done = false; | |
8691 | ||
8692 | while (!done) | |
8693 | { | |
8694 | if (gfc_match_char ('(') != MATCH_YES) | |
8695 | { | |
a4d9b221 | 8696 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8697 | return MATCH_ERROR; |
83d890b9 | 8698 | } |
d51347f9 | 8699 | |
83d890b9 AL |
8700 | /* Match pointer. */ |
8701 | var_locus = gfc_current_locus; | |
8702 | gfc_clear_attr (¤t_attr); | |
8703 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8704 | current_ts.type = BT_INTEGER; | |
8705 | current_ts.kind = gfc_index_integer_kind; | |
8706 | ||
d51347f9 | 8707 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8708 | if (m != MATCH_YES) |
8709 | { | |
8710 | gfc_error ("Expected variable name at %C"); | |
8711 | return m; | |
8712 | } | |
d51347f9 | 8713 | |
524af0d6 | 8714 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8715 | return MATCH_ERROR; |
8716 | ||
d51347f9 | 8717 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8718 | |
8719 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8720 | { | |
8721 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8722 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8723 | } |
8724 | else if (cptr->ts.type != BT_INTEGER) | |
8725 | { | |
e25a0da3 | 8726 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8727 | return MATCH_ERROR; |
8728 | } | |
8729 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8730 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8731 | " memory addresses require %d bytes", |
636dff67 | 8732 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8733 | |
8734 | if (gfc_match_char (',') != MATCH_YES) | |
8735 | { | |
8736 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8737 | return MATCH_ERROR; |
83d890b9 AL |
8738 | } |
8739 | ||
d51347f9 | 8740 | /* Match Pointee. */ |
83d890b9 AL |
8741 | var_locus = gfc_current_locus; |
8742 | gfc_clear_attr (¤t_attr); | |
8743 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8744 | current_ts.type = BT_UNKNOWN; | |
8745 | current_ts.kind = 0; | |
8746 | ||
8747 | m = gfc_match_symbol (&cpte, 0); | |
8748 | if (m != MATCH_YES) | |
8749 | { | |
8750 | gfc_error ("Expected variable name at %C"); | |
8751 | return m; | |
8752 | } | |
d51347f9 | 8753 | |
83d890b9 | 8754 | /* Check for an optional array spec. */ |
be59db2d | 8755 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8756 | if (m == MATCH_ERROR) |
8757 | { | |
8758 | gfc_free_array_spec (as); | |
8759 | return m; | |
8760 | } | |
8761 | else if (m == MATCH_NO) | |
8762 | { | |
8763 | gfc_free_array_spec (as); | |
8764 | as = NULL; | |
f5acf0f2 | 8765 | } |
83d890b9 | 8766 | |
524af0d6 | 8767 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8768 | return MATCH_ERROR; |
8769 | ||
8770 | gfc_set_sym_referenced (cpte); | |
8771 | ||
8772 | if (cpte->as == NULL) | |
8773 | { | |
524af0d6 | 8774 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
1fe61adf | 8775 | gfc_internal_error ("Cannot set Cray pointee array spec."); |
83d890b9 AL |
8776 | } |
8777 | else if (as != NULL) | |
8778 | { | |
e25a0da3 | 8779 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8780 | gfc_free_array_spec (as); |
8781 | return MATCH_ERROR; | |
8782 | } | |
f5acf0f2 | 8783 | |
83d890b9 | 8784 | as = NULL; |
f5acf0f2 | 8785 | |
83d890b9 AL |
8786 | if (cpte->as != NULL) |
8787 | { | |
8788 | /* Fix array spec. */ | |
8789 | m = gfc_mod_pointee_as (cpte->as); | |
8790 | if (m == MATCH_ERROR) | |
8791 | return m; | |
f5acf0f2 PT |
8792 | } |
8793 | ||
83d890b9 | 8794 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8795 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8796 | |
8797 | if (gfc_match_char (')') != MATCH_YES) | |
8798 | { | |
8799 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8800 | return MATCH_ERROR; |
83d890b9 AL |
8801 | } |
8802 | m = gfc_match_char (','); | |
8803 | if (m != MATCH_YES) | |
8804 | done = true; /* Stop searching for more declarations. */ | |
8805 | ||
8806 | } | |
f5acf0f2 | 8807 | |
83d890b9 AL |
8808 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8809 | || gfc_match_eos () != MATCH_YES) | |
8810 | { | |
a4d9b221 | 8811 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8812 | return MATCH_ERROR; |
8813 | } | |
8814 | return MATCH_YES; | |
8815 | } | |
8816 | ||
8817 | ||
6de9cd9a DN |
8818 | match |
8819 | gfc_match_external (void) | |
8820 | { | |
8821 | ||
8822 | gfc_clear_attr (¤t_attr); | |
1902704e | 8823 | current_attr.external = 1; |
6de9cd9a DN |
8824 | |
8825 | return attr_decl (); | |
8826 | } | |
8827 | ||
8828 | ||
6de9cd9a DN |
8829 | match |
8830 | gfc_match_intent (void) | |
8831 | { | |
8832 | sym_intent intent; | |
8833 | ||
9abe5e56 DK |
8834 | /* This is not allowed within a BLOCK construct! */ |
8835 | if (gfc_current_state () == COMP_BLOCK) | |
8836 | { | |
8837 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8838 | return MATCH_ERROR; | |
8839 | } | |
8840 | ||
6de9cd9a DN |
8841 | intent = match_intent_spec (); |
8842 | if (intent == INTENT_UNKNOWN) | |
8843 | return MATCH_ERROR; | |
8844 | ||
8845 | gfc_clear_attr (¤t_attr); | |
1902704e | 8846 | current_attr.intent = intent; |
6de9cd9a DN |
8847 | |
8848 | return attr_decl (); | |
8849 | } | |
8850 | ||
8851 | ||
8852 | match | |
8853 | gfc_match_intrinsic (void) | |
8854 | { | |
8855 | ||
8856 | gfc_clear_attr (¤t_attr); | |
1902704e | 8857 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8858 | |
8859 | return attr_decl (); | |
8860 | } | |
8861 | ||
8862 | ||
8863 | match | |
8864 | gfc_match_optional (void) | |
8865 | { | |
9abe5e56 DK |
8866 | /* This is not allowed within a BLOCK construct! */ |
8867 | if (gfc_current_state () == COMP_BLOCK) | |
8868 | { | |
8869 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8870 | return MATCH_ERROR; | |
8871 | } | |
6de9cd9a DN |
8872 | |
8873 | gfc_clear_attr (¤t_attr); | |
1902704e | 8874 | current_attr.optional = 1; |
6de9cd9a DN |
8875 | |
8876 | return attr_decl (); | |
8877 | } | |
8878 | ||
8879 | ||
8880 | match | |
8881 | gfc_match_pointer (void) | |
8882 | { | |
83d890b9 | 8883 | gfc_gobble_whitespace (); |
8fc541d3 | 8884 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8885 | { |
c61819ff | 8886 | if (!flag_cray_pointer) |
83d890b9 | 8887 | { |
a3f9f006 ML |
8888 | gfc_error ("Cray pointer declaration at %C requires " |
8889 | "%<-fcray-pointer%> flag"); | |
83d890b9 AL |
8890 | return MATCH_ERROR; |
8891 | } | |
8892 | return cray_pointer_decl (); | |
8893 | } | |
8894 | else | |
8895 | { | |
8896 | gfc_clear_attr (¤t_attr); | |
1902704e | 8897 | current_attr.pointer = 1; |
f5acf0f2 | 8898 | |
83d890b9 AL |
8899 | return attr_decl (); |
8900 | } | |
6de9cd9a DN |
8901 | } |
8902 | ||
8903 | ||
8904 | match | |
8905 | gfc_match_allocatable (void) | |
8906 | { | |
6de9cd9a | 8907 | gfc_clear_attr (¤t_attr); |
1902704e | 8908 | current_attr.allocatable = 1; |
6de9cd9a DN |
8909 | |
8910 | return attr_decl (); | |
8911 | } | |
8912 | ||
8913 | ||
be59db2d TB |
8914 | match |
8915 | gfc_match_codimension (void) | |
8916 | { | |
8917 | gfc_clear_attr (¤t_attr); | |
8918 | current_attr.codimension = 1; | |
8919 | ||
8920 | return attr_decl (); | |
8921 | } | |
8922 | ||
8923 | ||
fe4e525c TB |
8924 | match |
8925 | gfc_match_contiguous (void) | |
8926 | { | |
524af0d6 | 8927 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8928 | return MATCH_ERROR; |
8929 | ||
8930 | gfc_clear_attr (¤t_attr); | |
8931 | current_attr.contiguous = 1; | |
8932 | ||
8933 | return attr_decl (); | |
8934 | } | |
8935 | ||
8936 | ||
6de9cd9a DN |
8937 | match |
8938 | gfc_match_dimension (void) | |
8939 | { | |
6de9cd9a | 8940 | gfc_clear_attr (¤t_attr); |
1902704e | 8941 | current_attr.dimension = 1; |
6de9cd9a DN |
8942 | |
8943 | return attr_decl (); | |
8944 | } | |
8945 | ||
8946 | ||
8947 | match | |
8948 | gfc_match_target (void) | |
8949 | { | |
6de9cd9a | 8950 | gfc_clear_attr (¤t_attr); |
1902704e | 8951 | current_attr.target = 1; |
6de9cd9a DN |
8952 | |
8953 | return attr_decl (); | |
8954 | } | |
8955 | ||
8956 | ||
8957 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8958 | statement. */ | |
8959 | ||
8960 | static match | |
8961 | access_attr_decl (gfc_statement st) | |
8962 | { | |
8963 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8964 | interface_type type; | |
8965 | gfc_user_op *uop; | |
c3f34952 | 8966 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8967 | gfc_intrinsic_op op; |
6de9cd9a | 8968 | match m; |
b4882698 | 8969 | gfc_access access = (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
6de9cd9a DN |
8970 | |
8971 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8972 | goto done; | |
8973 | ||
8974 | for (;;) | |
8975 | { | |
a1ee985f | 8976 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8977 | if (m == MATCH_NO) |
8978 | goto syntax; | |
8979 | if (m == MATCH_ERROR) | |
b4882698 | 8980 | goto done; |
6de9cd9a DN |
8981 | |
8982 | switch (type) | |
8983 | { | |
8984 | case INTERFACE_NAMELESS: | |
9e1d712c | 8985 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8986 | goto syntax; |
8987 | ||
8988 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8989 | case INTERFACE_DTIO: |
dc42a736 | 8990 | |
6de9cd9a DN |
8991 | if (gfc_get_symbol (name, NULL, &sym)) |
8992 | goto done; | |
8993 | ||
41036686 PT |
8994 | if (type == INTERFACE_DTIO |
8995 | && gfc_current_ns->proc_name | |
8996 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8997 | && sym->attr.flavor == FL_UNKNOWN) | |
8998 | sym->attr.flavor = FL_PROCEDURE; | |
8999 | ||
b4882698 SK |
9000 | if (!gfc_add_access (&sym->attr, access, sym->name, NULL)) |
9001 | goto done; | |
6de9cd9a | 9002 | |
c3f34952 | 9003 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
b4882698 SK |
9004 | && !gfc_add_access (&dt_sym->attr, access, sym->name, NULL)) |
9005 | goto done; | |
c3f34952 | 9006 | |
6de9cd9a DN |
9007 | break; |
9008 | ||
9009 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 9010 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 9011 | { |
fb03a37e TK |
9012 | gfc_intrinsic_op other_op; |
9013 | ||
b4882698 | 9014 | gfc_current_ns->operator_access[op] = access; |
fb03a37e TK |
9015 | |
9016 | /* Handle the case if there is another op with the same | |
9017 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
9018 | other_op = gfc_equivalent_op (op); | |
9019 | ||
9020 | if (other_op != INTRINSIC_NONE) | |
b4882698 | 9021 | gfc_current_ns->operator_access[other_op] = access; |
6de9cd9a DN |
9022 | } |
9023 | else | |
9024 | { | |
9025 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 9026 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
9027 | goto done; |
9028 | } | |
9029 | ||
9030 | break; | |
9031 | ||
9032 | case INTERFACE_USER_OP: | |
9033 | uop = gfc_get_uop (name); | |
9034 | ||
9035 | if (uop->access == ACCESS_UNKNOWN) | |
9036 | { | |
b4882698 | 9037 | uop->access = access; |
6de9cd9a DN |
9038 | } |
9039 | else | |
9040 | { | |
636dff67 SK |
9041 | gfc_error ("Access specification of the .%s. operator at %C " |
9042 | "has already been specified", sym->name); | |
6de9cd9a DN |
9043 | goto done; |
9044 | } | |
9045 | ||
9046 | break; | |
9047 | } | |
9048 | ||
9049 | if (gfc_match_char (',') == MATCH_NO) | |
9050 | break; | |
9051 | } | |
9052 | ||
9053 | if (gfc_match_eos () != MATCH_YES) | |
9054 | goto syntax; | |
9055 | return MATCH_YES; | |
9056 | ||
9057 | syntax: | |
9058 | gfc_syntax_error (st); | |
9059 | ||
9060 | done: | |
9061 | return MATCH_ERROR; | |
9062 | } | |
9063 | ||
9064 | ||
ee7e677f TB |
9065 | match |
9066 | gfc_match_protected (void) | |
9067 | { | |
9068 | gfc_symbol *sym; | |
9069 | match m; | |
b4882698 SK |
9070 | char c; |
9071 | ||
9072 | /* PROTECTED has already been seen, but must be followed by whitespace | |
9073 | or ::. */ | |
9074 | c = gfc_peek_ascii_char (); | |
9075 | if (!gfc_is_whitespace (c) && c != ':') | |
9076 | return MATCH_NO; | |
ee7e677f | 9077 | |
73641c88 SK |
9078 | if (!gfc_current_ns->proc_name |
9079 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
9080 | { |
9081 | gfc_error ("PROTECTED at %C only allowed in specification " | |
9082 | "part of a module"); | |
9083 | return MATCH_ERROR; | |
9084 | ||
9085 | } | |
9086 | ||
b4882698 SK |
9087 | gfc_match (" ::"); |
9088 | ||
524af0d6 | 9089 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
9090 | return MATCH_ERROR; |
9091 | ||
b4882698 | 9092 | /* PROTECTED has an entity-list. */ |
ee7e677f TB |
9093 | if (gfc_match_eos () == MATCH_YES) |
9094 | goto syntax; | |
9095 | ||
9096 | for(;;) | |
9097 | { | |
9098 | m = gfc_match_symbol (&sym, 0); | |
9099 | switch (m) | |
9100 | { | |
9101 | case MATCH_YES: | |
524af0d6 | 9102 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
9103 | return MATCH_ERROR; |
9104 | goto next_item; | |
9105 | ||
9106 | case MATCH_NO: | |
9107 | break; | |
9108 | ||
9109 | case MATCH_ERROR: | |
9110 | return MATCH_ERROR; | |
9111 | } | |
9112 | ||
9113 | next_item: | |
9114 | if (gfc_match_eos () == MATCH_YES) | |
9115 | break; | |
9116 | if (gfc_match_char (',') != MATCH_YES) | |
9117 | goto syntax; | |
9118 | } | |
9119 | ||
9120 | return MATCH_YES; | |
9121 | ||
9122 | syntax: | |
9123 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
9124 | return MATCH_ERROR; | |
9125 | } | |
9126 | ||
9127 | ||
86bf520d | 9128 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 9129 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
9130 | type declaration or a module. */ |
9131 | ||
9132 | match | |
636dff67 | 9133 | gfc_match_private (gfc_statement *st) |
6de9cd9a | 9134 | { |
b4882698 | 9135 | gfc_state_data *prev; |
6de9cd9a DN |
9136 | |
9137 | if (gfc_match ("private") != MATCH_YES) | |
9138 | return MATCH_NO; | |
9139 | ||
b4882698 SK |
9140 | /* Try matching PRIVATE without an access-list. */ |
9141 | if (gfc_match_eos () == MATCH_YES) | |
6de9cd9a | 9142 | { |
b4882698 SK |
9143 | prev = gfc_state_stack->previous; |
9144 | if (gfc_current_state () != COMP_MODULE | |
9145 | && !(gfc_current_state () == COMP_DERIVED | |
9146 | && prev && prev->state == COMP_MODULE) | |
9147 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
9148 | && prev->previous && prev->previous->state == COMP_MODULE)) | |
6de9cd9a | 9149 | { |
b4882698 SK |
9150 | gfc_error ("PRIVATE statement at %C is only allowed in the " |
9151 | "specification part of a module"); | |
9152 | return MATCH_ERROR; | |
6de9cd9a DN |
9153 | } |
9154 | ||
b4882698 SK |
9155 | *st = ST_PRIVATE; |
9156 | return MATCH_YES; | |
6de9cd9a DN |
9157 | } |
9158 | ||
c7e34433 SK |
9159 | /* At this point in free-form source code, PRIVATE must be followed |
9160 | by whitespace or ::. */ | |
9161 | if (gfc_current_form == FORM_FREE) | |
9162 | { | |
9163 | char c = gfc_peek_ascii_char (); | |
9164 | if (!gfc_is_whitespace (c) && c != ':') | |
9165 | return MATCH_NO; | |
9166 | } | |
b4882698 SK |
9167 | |
9168 | prev = gfc_state_stack->previous; | |
9169 | if (gfc_current_state () != COMP_MODULE | |
9170 | && !(gfc_current_state () == COMP_DERIVED | |
9171 | && prev && prev->state == COMP_MODULE) | |
9172 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
9173 | && prev->previous && prev->previous->state == COMP_MODULE)) | |
6de9cd9a | 9174 | { |
b4882698 SK |
9175 | gfc_error ("PRIVATE statement at %C is only allowed in the " |
9176 | "specification part of a module"); | |
9177 | return MATCH_ERROR; | |
6de9cd9a DN |
9178 | } |
9179 | ||
9180 | *st = ST_ATTR_DECL; | |
9181 | return access_attr_decl (ST_PRIVATE); | |
9182 | } | |
9183 | ||
9184 | ||
9185 | match | |
636dff67 | 9186 | gfc_match_public (gfc_statement *st) |
6de9cd9a | 9187 | { |
6de9cd9a DN |
9188 | if (gfc_match ("public") != MATCH_YES) |
9189 | return MATCH_NO; | |
9190 | ||
b4882698 SK |
9191 | /* Try matching PUBLIC without an access-list. */ |
9192 | if (gfc_match_eos () == MATCH_YES) | |
9193 | { | |
9194 | if (gfc_current_state () != COMP_MODULE) | |
9195 | { | |
9196 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
9197 | "specification part of a module"); | |
9198 | return MATCH_ERROR; | |
9199 | } | |
9200 | ||
9201 | *st = ST_PUBLIC; | |
9202 | return MATCH_YES; | |
9203 | } | |
9204 | ||
c7e34433 SK |
9205 | /* At this point in free-form source code, PUBLIC must be followed |
9206 | by whitespace or ::. */ | |
9207 | if (gfc_current_form == FORM_FREE) | |
9208 | { | |
9209 | char c = gfc_peek_ascii_char (); | |
9210 | if (!gfc_is_whitespace (c) && c != ':') | |
9211 | return MATCH_NO; | |
9212 | } | |
b4882698 | 9213 | |
d51347f9 TB |
9214 | if (gfc_current_state () != COMP_MODULE) |
9215 | { | |
9216 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
9217 | "specification part of a module"); | |
9218 | return MATCH_ERROR; | |
9219 | } | |
9220 | ||
6de9cd9a DN |
9221 | *st = ST_ATTR_DECL; |
9222 | return access_attr_decl (ST_PUBLIC); | |
9223 | } | |
9224 | ||
9225 | ||
9226 | /* Workhorse for gfc_match_parameter. */ | |
9227 | ||
9228 | static match | |
9229 | do_parm (void) | |
9230 | { | |
9231 | gfc_symbol *sym; | |
9232 | gfc_expr *init; | |
9233 | match m; | |
524af0d6 | 9234 | bool t; |
6de9cd9a DN |
9235 | |
9236 | m = gfc_match_symbol (&sym, 0); | |
9237 | if (m == MATCH_NO) | |
9238 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
9239 | ||
9240 | if (m != MATCH_YES) | |
9241 | return m; | |
9242 | ||
9243 | if (gfc_match_char ('=') == MATCH_NO) | |
9244 | { | |
9245 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
9246 | return MATCH_ERROR; | |
9247 | } | |
9248 | ||
9249 | m = gfc_match_init_expr (&init); | |
9250 | if (m == MATCH_NO) | |
9251 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
9252 | if (m != MATCH_YES) | |
9253 | return m; | |
9254 | ||
9255 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 9256 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
9257 | { |
9258 | m = MATCH_ERROR; | |
9259 | goto cleanup; | |
9260 | } | |
9261 | ||
524af0d6 JB |
9262 | if (!gfc_check_assign_symbol (sym, NULL, init) |
9263 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
9264 | { |
9265 | m = MATCH_ERROR; | |
9266 | goto cleanup; | |
9267 | } | |
9268 | ||
1283ab12 TB |
9269 | if (sym->value) |
9270 | { | |
9271 | gfc_error ("Initializing already initialized variable at %C"); | |
9272 | m = MATCH_ERROR; | |
9273 | goto cleanup; | |
9274 | } | |
9275 | ||
7919373d | 9276 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 9277 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
9278 | |
9279 | cleanup: | |
9280 | gfc_free_expr (init); | |
9281 | return m; | |
9282 | } | |
9283 | ||
9284 | ||
9285 | /* Match a parameter statement, with the weird syntax that these have. */ | |
9286 | ||
9287 | match | |
9288 | gfc_match_parameter (void) | |
9289 | { | |
35ea947f | 9290 | const char *term = " )%t"; |
6de9cd9a DN |
9291 | match m; |
9292 | ||
9293 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
9294 | { |
9295 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
9296 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
9297 | return MATCH_NO; | |
9298 | term = " %t"; | |
9299 | } | |
6de9cd9a DN |
9300 | |
9301 | for (;;) | |
9302 | { | |
9303 | m = do_parm (); | |
9304 | if (m != MATCH_YES) | |
9305 | break; | |
9306 | ||
35ea947f | 9307 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
9308 | break; |
9309 | ||
9310 | if (gfc_match_char (',') != MATCH_YES) | |
9311 | { | |
9312 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
9313 | m = MATCH_ERROR; | |
9314 | break; | |
9315 | } | |
9316 | } | |
9317 | ||
9318 | return m; | |
9319 | } | |
9320 | ||
9321 | ||
34d567d1 FR |
9322 | match |
9323 | gfc_match_automatic (void) | |
9324 | { | |
9325 | gfc_symbol *sym; | |
9326 | match m; | |
9327 | bool seen_symbol = false; | |
9328 | ||
9329 | if (!flag_dec_static) | |
9330 | { | |
cf004230 FR |
9331 | gfc_error ("%s at %C is a DEC extension, enable with " |
9332 | "%<-fdec-static%>", | |
9333 | "AUTOMATIC" | |
9334 | ); | |
34d567d1 FR |
9335 | return MATCH_ERROR; |
9336 | } | |
9337 | ||
9338 | gfc_match (" ::"); | |
9339 | ||
9340 | for (;;) | |
9341 | { | |
9342 | m = gfc_match_symbol (&sym, 0); | |
9343 | switch (m) | |
9344 | { | |
9345 | case MATCH_NO: | |
9346 | break; | |
9347 | ||
9348 | case MATCH_ERROR: | |
9349 | return MATCH_ERROR; | |
9350 | ||
9351 | case MATCH_YES: | |
9352 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9353 | return MATCH_ERROR; | |
9354 | seen_symbol = true; | |
9355 | break; | |
9356 | } | |
9357 | ||
9358 | if (gfc_match_eos () == MATCH_YES) | |
9359 | break; | |
9360 | if (gfc_match_char (',') != MATCH_YES) | |
9361 | goto syntax; | |
9362 | } | |
9363 | ||
9364 | if (!seen_symbol) | |
9365 | { | |
9366 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9367 | return MATCH_ERROR; | |
9368 | } | |
9369 | ||
9370 | return MATCH_YES; | |
9371 | ||
9372 | syntax: | |
9373 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9374 | return MATCH_ERROR; | |
9375 | } | |
9376 | ||
9377 | ||
9378 | match | |
9379 | gfc_match_static (void) | |
9380 | { | |
9381 | gfc_symbol *sym; | |
9382 | match m; | |
9383 | bool seen_symbol = false; | |
9384 | ||
9385 | if (!flag_dec_static) | |
9386 | { | |
cf004230 FR |
9387 | gfc_error ("%s at %C is a DEC extension, enable with " |
9388 | "%<-fdec-static%>", | |
9389 | "STATIC"); | |
34d567d1 FR |
9390 | return MATCH_ERROR; |
9391 | } | |
9392 | ||
9393 | gfc_match (" ::"); | |
9394 | ||
9395 | for (;;) | |
9396 | { | |
9397 | m = gfc_match_symbol (&sym, 0); | |
9398 | switch (m) | |
9399 | { | |
9400 | case MATCH_NO: | |
9401 | break; | |
9402 | ||
9403 | case MATCH_ERROR: | |
9404 | return MATCH_ERROR; | |
9405 | ||
9406 | case MATCH_YES: | |
9407 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9408 | &gfc_current_locus)) | |
9409 | return MATCH_ERROR; | |
9410 | seen_symbol = true; | |
9411 | break; | |
9412 | } | |
9413 | ||
9414 | if (gfc_match_eos () == MATCH_YES) | |
9415 | break; | |
9416 | if (gfc_match_char (',') != MATCH_YES) | |
9417 | goto syntax; | |
9418 | } | |
9419 | ||
9420 | if (!seen_symbol) | |
9421 | { | |
9422 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9423 | return MATCH_ERROR; | |
9424 | } | |
9425 | ||
9426 | return MATCH_YES; | |
9427 | ||
9428 | syntax: | |
9429 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9430 | return MATCH_ERROR; | |
9431 | } | |
9432 | ||
9433 | ||
6de9cd9a DN |
9434 | /* Save statements have a special syntax. */ |
9435 | ||
9436 | match | |
9437 | gfc_match_save (void) | |
9438 | { | |
9056bd70 TS |
9439 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9440 | gfc_common_head *c; | |
6de9cd9a DN |
9441 | gfc_symbol *sym; |
9442 | match m; | |
9443 | ||
9444 | if (gfc_match_eos () == MATCH_YES) | |
9445 | { | |
9446 | if (gfc_current_ns->seen_save) | |
9447 | { | |
524af0d6 JB |
9448 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9449 | "follows previous SAVE statement")) | |
09e87839 | 9450 | return MATCH_ERROR; |
6de9cd9a DN |
9451 | } |
9452 | ||
9453 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9454 | return MATCH_YES; | |
9455 | } | |
9456 | ||
9457 | if (gfc_current_ns->save_all) | |
9458 | { | |
524af0d6 JB |
9459 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9460 | "blanket SAVE statement")) | |
09e87839 | 9461 | return MATCH_ERROR; |
6de9cd9a DN |
9462 | } |
9463 | ||
9464 | gfc_match (" ::"); | |
9465 | ||
9466 | for (;;) | |
9467 | { | |
9468 | m = gfc_match_symbol (&sym, 0); | |
9469 | switch (m) | |
9470 | { | |
9471 | case MATCH_YES: | |
70112e2a | 9472 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 9473 | &gfc_current_locus)) |
6de9cd9a DN |
9474 | return MATCH_ERROR; |
9475 | goto next_item; | |
9476 | ||
9477 | case MATCH_NO: | |
9478 | break; | |
9479 | ||
9480 | case MATCH_ERROR: | |
9481 | return MATCH_ERROR; | |
9482 | } | |
9483 | ||
9056bd70 | 9484 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
9485 | if (m == MATCH_ERROR) |
9486 | return MATCH_ERROR; | |
9487 | if (m == MATCH_NO) | |
9488 | goto syntax; | |
9489 | ||
53814b8f | 9490 | c = gfc_get_common (n, 0); |
9056bd70 TS |
9491 | c->saved = 1; |
9492 | ||
6de9cd9a DN |
9493 | gfc_current_ns->seen_save = 1; |
9494 | ||
9495 | next_item: | |
9496 | if (gfc_match_eos () == MATCH_YES) | |
9497 | break; | |
9498 | if (gfc_match_char (',') != MATCH_YES) | |
9499 | goto syntax; | |
9500 | } | |
9501 | ||
9502 | return MATCH_YES; | |
9503 | ||
9504 | syntax: | |
69352933 SK |
9505 | if (gfc_current_ns->seen_save) |
9506 | { | |
9507 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9508 | return MATCH_ERROR; | |
9509 | } | |
9510 | else | |
9511 | return MATCH_NO; | |
6de9cd9a DN |
9512 | } |
9513 | ||
9514 | ||
06469efd PT |
9515 | match |
9516 | gfc_match_value (void) | |
9517 | { | |
9518 | gfc_symbol *sym; | |
9519 | match m; | |
9520 | ||
9abe5e56 DK |
9521 | /* This is not allowed within a BLOCK construct! */ |
9522 | if (gfc_current_state () == COMP_BLOCK) | |
9523 | { | |
9524 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9525 | return MATCH_ERROR; | |
9526 | } | |
9527 | ||
524af0d6 | 9528 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9529 | return MATCH_ERROR; |
9530 | ||
9531 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9532 | { | |
9533 | return MATCH_ERROR; | |
9534 | } | |
9535 | ||
9536 | if (gfc_match_eos () == MATCH_YES) | |
9537 | goto syntax; | |
9538 | ||
9539 | for(;;) | |
9540 | { | |
9541 | m = gfc_match_symbol (&sym, 0); | |
9542 | switch (m) | |
9543 | { | |
9544 | case MATCH_YES: | |
524af0d6 | 9545 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9546 | return MATCH_ERROR; |
9547 | goto next_item; | |
9548 | ||
9549 | case MATCH_NO: | |
9550 | break; | |
9551 | ||
9552 | case MATCH_ERROR: | |
9553 | return MATCH_ERROR; | |
9554 | } | |
9555 | ||
9556 | next_item: | |
9557 | if (gfc_match_eos () == MATCH_YES) | |
9558 | break; | |
9559 | if (gfc_match_char (',') != MATCH_YES) | |
9560 | goto syntax; | |
9561 | } | |
9562 | ||
9563 | return MATCH_YES; | |
9564 | ||
9565 | syntax: | |
9566 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9567 | return MATCH_ERROR; | |
9568 | } | |
9569 | ||
66e4ab31 | 9570 | |
775e6c3a TB |
9571 | match |
9572 | gfc_match_volatile (void) | |
9573 | { | |
9574 | gfc_symbol *sym; | |
ba77f7ba | 9575 | char *name; |
775e6c3a TB |
9576 | match m; |
9577 | ||
524af0d6 | 9578 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9579 | return MATCH_ERROR; |
9580 | ||
9581 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9582 | { | |
9583 | return MATCH_ERROR; | |
9584 | } | |
9585 | ||
9586 | if (gfc_match_eos () == MATCH_YES) | |
9587 | goto syntax; | |
9588 | ||
9589 | for(;;) | |
9590 | { | |
f5acf0f2 | 9591 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9592 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9593 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9594 | switch (m) |
9595 | { | |
9596 | case MATCH_YES: | |
ba77f7ba SK |
9597 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9598 | strcpy (name, sym->name); | |
9599 | if (!check_function_name (name)) | |
9600 | return MATCH_ERROR; | |
be59db2d TB |
9601 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9602 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9603 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9604 | { | |
c4100eae | 9605 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9606 | "%C, which is use-/host-associated", sym->name); |
9607 | return MATCH_ERROR; | |
9608 | } | |
524af0d6 | 9609 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9610 | return MATCH_ERROR; |
9611 | goto next_item; | |
9612 | ||
9613 | case MATCH_NO: | |
9614 | break; | |
9615 | ||
9616 | case MATCH_ERROR: | |
9617 | return MATCH_ERROR; | |
9618 | } | |
9619 | ||
9620 | next_item: | |
9621 | if (gfc_match_eos () == MATCH_YES) | |
9622 | break; | |
9623 | if (gfc_match_char (',') != MATCH_YES) | |
9624 | goto syntax; | |
9625 | } | |
9626 | ||
9627 | return MATCH_YES; | |
9628 | ||
9629 | syntax: | |
9630 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9631 | return MATCH_ERROR; | |
9632 | } | |
9633 | ||
9634 | ||
1eee5628 TB |
9635 | match |
9636 | gfc_match_asynchronous (void) | |
9637 | { | |
9638 | gfc_symbol *sym; | |
ba77f7ba | 9639 | char *name; |
1eee5628 TB |
9640 | match m; |
9641 | ||
524af0d6 | 9642 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9643 | return MATCH_ERROR; |
9644 | ||
9645 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9646 | { | |
9647 | return MATCH_ERROR; | |
9648 | } | |
9649 | ||
9650 | if (gfc_match_eos () == MATCH_YES) | |
9651 | goto syntax; | |
9652 | ||
9653 | for(;;) | |
9654 | { | |
f5acf0f2 | 9655 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9656 | symbols locally. */ |
9657 | m = gfc_match_symbol (&sym, 1); | |
9658 | switch (m) | |
9659 | { | |
9660 | case MATCH_YES: | |
ba77f7ba SK |
9661 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9662 | strcpy (name, sym->name); | |
9663 | if (!check_function_name (name)) | |
9664 | return MATCH_ERROR; | |
524af0d6 | 9665 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9666 | return MATCH_ERROR; |
9667 | goto next_item; | |
9668 | ||
9669 | case MATCH_NO: | |
9670 | break; | |
9671 | ||
9672 | case MATCH_ERROR: | |
9673 | return MATCH_ERROR; | |
9674 | } | |
9675 | ||
9676 | next_item: | |
9677 | if (gfc_match_eos () == MATCH_YES) | |
9678 | break; | |
9679 | if (gfc_match_char (',') != MATCH_YES) | |
9680 | goto syntax; | |
9681 | } | |
9682 | ||
9683 | return MATCH_YES; | |
9684 | ||
9685 | syntax: | |
9686 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9687 | return MATCH_ERROR; | |
9688 | } | |
9689 | ||
9690 | ||
4668d6f9 PT |
9691 | /* Match a module procedure statement in a submodule. */ |
9692 | ||
9693 | match | |
9694 | gfc_match_submod_proc (void) | |
9695 | { | |
9696 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9697 | gfc_symbol *sym, *fsym; | |
9698 | match m; | |
9699 | gfc_formal_arglist *formal, *head, *tail; | |
9700 | ||
9701 | if (gfc_current_state () != COMP_CONTAINS | |
9702 | || !(gfc_state_stack->previous | |
70112e2a PT |
9703 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9704 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9705 | return MATCH_NO; |
9706 | ||
9707 | m = gfc_match (" module% procedure% %n", name); | |
9708 | if (m != MATCH_YES) | |
9709 | return m; | |
9710 | ||
9711 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9712 | "at %C")) | |
9713 | return MATCH_ERROR; | |
9714 | ||
9715 | if (get_proc_name (name, &sym, false)) | |
9716 | return MATCH_ERROR; | |
9717 | ||
3fb7f2fb | 9718 | /* Make sure that the result field is appropriately filled. */ |
c064374d | 9719 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9720 | { |
3fb7f2fb TB |
9721 | if (sym->tlink->result && sym->tlink->result != sym->tlink) |
9722 | { | |
9723 | sym->result = sym->tlink->result; | |
9724 | if (!sym->result->attr.use_assoc) | |
9725 | { | |
9726 | gfc_symtree *st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
9727 | sym->result->name); | |
9728 | st->n.sym = sym->result; | |
9729 | sym->result->refs++; | |
9730 | } | |
9731 | } | |
4668d6f9 PT |
9732 | else |
9733 | sym->result = sym; | |
9734 | } | |
9735 | ||
9736 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9737 | the symbol existed before. */ | |
9738 | sym->declared_at = gfc_current_locus; | |
9739 | ||
9740 | if (!sym->attr.module_procedure) | |
9741 | return MATCH_ERROR; | |
9742 | ||
9743 | /* Signal match_end to expect "end procedure". */ | |
9744 | sym->abr_modproc_decl = 1; | |
9745 | ||
9746 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9747 | sym->attr.if_source = IFSRC_DECL; | |
9748 | ||
9749 | gfc_new_block = sym; | |
9750 | ||
9751 | /* Make a new formal arglist with the symbols in the procedure | |
9752 | namespace. */ | |
9753 | head = tail = NULL; | |
9754 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9755 | { | |
9756 | if (formal == sym->formal) | |
9757 | head = tail = gfc_get_formal_arglist (); | |
9758 | else | |
9759 | { | |
9760 | tail->next = gfc_get_formal_arglist (); | |
9761 | tail = tail->next; | |
9762 | } | |
9763 | ||
9764 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9765 | goto cleanup; | |
9766 | ||
9767 | tail->sym = fsym; | |
9768 | gfc_set_sym_referenced (fsym); | |
9769 | } | |
9770 | ||
9771 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9772 | interface declaration is cleared. This allows us to add the | |
9773 | explicit interface as is done for other type of procedure. */ | |
9774 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9775 | &gfc_current_locus)) | |
9776 | return MATCH_ERROR; | |
9777 | ||
9778 | if (gfc_match_eos () != MATCH_YES) | |
9779 | { | |
9780 | gfc_syntax_error (ST_MODULE_PROC); | |
9781 | return MATCH_ERROR; | |
9782 | } | |
9783 | ||
9784 | return MATCH_YES; | |
9785 | ||
9786 | cleanup: | |
9787 | gfc_free_formal_arglist (head); | |
9788 | return MATCH_ERROR; | |
9789 | } | |
9790 | ||
9791 | ||
6de9cd9a DN |
9792 | /* Match a module procedure statement. Note that we have to modify |
9793 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9794 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9795 | |
9796 | match | |
9797 | gfc_match_modproc (void) | |
9798 | { | |
9799 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9800 | gfc_symbol *sym; | |
9801 | match m; | |
162b5a21 | 9802 | locus old_locus; |
060fca4a | 9803 | gfc_namespace *module_ns; |
2b77e908 | 9804 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9805 | |
9806 | if (gfc_state_stack->state != COMP_INTERFACE | |
9807 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9808 | || current_interface.type == INTERFACE_NAMELESS |
9809 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9810 | { |
636dff67 SK |
9811 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9812 | "interface"); | |
6de9cd9a DN |
9813 | return MATCH_ERROR; |
9814 | } | |
9815 | ||
060fca4a PT |
9816 | module_ns = gfc_current_ns->parent; |
9817 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9818 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9819 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9820 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9821 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9822 | break; |
9823 | ||
9824 | if (module_ns == NULL) | |
9825 | return MATCH_ERROR; | |
9826 | ||
2b77e908 FXC |
9827 | /* Store the current state of the interface. We will need it if we |
9828 | end up with a syntax error and need to recover. */ | |
9829 | old_interface_head = gfc_current_interface_head (); | |
9830 | ||
162b5a21 SK |
9831 | /* Check if the F2008 optional double colon appears. */ |
9832 | gfc_gobble_whitespace (); | |
9833 | old_locus = gfc_current_locus; | |
9834 | if (gfc_match ("::") == MATCH_YES) | |
9835 | { | |
524af0d6 JB |
9836 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9837 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9838 | return MATCH_ERROR; |
9839 | } | |
9840 | else | |
9841 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9842 | |
6de9cd9a DN |
9843 | for (;;) |
9844 | { | |
2b77e908 | 9845 | bool last = false; |
162b5a21 | 9846 | old_locus = gfc_current_locus; |
2b77e908 | 9847 | |
6de9cd9a DN |
9848 | m = gfc_match_name (name); |
9849 | if (m == MATCH_NO) | |
9850 | goto syntax; | |
9851 | if (m != MATCH_YES) | |
9852 | return MATCH_ERROR; | |
9853 | ||
2b77e908 FXC |
9854 | /* Check for syntax error before starting to add symbols to the |
9855 | current namespace. */ | |
9856 | if (gfc_match_eos () == MATCH_YES) | |
9857 | last = true; | |
162b5a21 | 9858 | |
2b77e908 FXC |
9859 | if (!last && gfc_match_char (',') != MATCH_YES) |
9860 | goto syntax; | |
9861 | ||
9862 | /* Now we're sure the syntax is valid, we process this item | |
9863 | further. */ | |
060fca4a | 9864 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9865 | return MATCH_ERROR; |
9866 | ||
43dfd40c SK |
9867 | if (sym->attr.intrinsic) |
9868 | { | |
9869 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9870 | "PROCEDURE", &old_locus); | |
9871 | return MATCH_ERROR; | |
9872 | } | |
9873 | ||
6de9cd9a | 9874 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9875 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9876 | return MATCH_ERROR; |
9877 | ||
524af0d6 | 9878 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9879 | return MATCH_ERROR; |
9880 | ||
71f77fd7 | 9881 | sym->attr.mod_proc = 1; |
43dfd40c | 9882 | sym->declared_at = old_locus; |
71f77fd7 | 9883 | |
2b77e908 | 9884 | if (last) |
6de9cd9a | 9885 | break; |
6de9cd9a DN |
9886 | } |
9887 | ||
9888 | return MATCH_YES; | |
9889 | ||
9890 | syntax: | |
2b77e908 FXC |
9891 | /* Restore the previous state of the interface. */ |
9892 | interface = gfc_current_interface_head (); | |
9893 | gfc_set_current_interface_head (old_interface_head); | |
9894 | ||
9895 | /* Free the new interfaces. */ | |
9896 | while (interface != old_interface_head) | |
9897 | { | |
9898 | gfc_interface *i = interface->next; | |
cede9502 | 9899 | free (interface); |
2b77e908 FXC |
9900 | interface = i; |
9901 | } | |
9902 | ||
9903 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9904 | gfc_syntax_error (ST_MODULE_PROC); |
9905 | return MATCH_ERROR; | |
9906 | } | |
9907 | ||
9908 | ||
7d1f1e61 | 9909 | /* Check a derived type that is being extended. */ |
42e3d759 | 9910 | |
7d1f1e61 PT |
9911 | static gfc_symbol* |
9912 | check_extended_derived_type (char *name) | |
9913 | { | |
9914 | gfc_symbol *extended; | |
9915 | ||
9916 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9917 | { | |
9918 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9919 | return NULL; | |
9920 | } | |
9921 | ||
42e3d759 JW |
9922 | extended = gfc_find_dt_in_generic (extended); |
9923 | ||
9924 | /* F08:C428. */ | |
7d1f1e61 PT |
9925 | if (!extended) |
9926 | { | |
c4100eae | 9927 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9928 | return NULL; |
9929 | } | |
9930 | ||
9931 | if (extended->attr.flavor != FL_DERIVED) | |
9932 | { | |
c4100eae | 9933 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9934 | "derived type", name); |
9935 | return NULL; | |
9936 | } | |
9937 | ||
9938 | if (extended->attr.is_bind_c) | |
9939 | { | |
c4100eae | 9940 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9941 | "is BIND(C)", extended->name); |
9942 | return NULL; | |
9943 | } | |
9944 | ||
9945 | if (extended->attr.sequence) | |
9946 | { | |
c4100eae | 9947 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9948 | "is a SEQUENCE type", extended->name); |
9949 | return NULL; | |
9950 | } | |
9951 | ||
9952 | return extended; | |
9953 | } | |
9954 | ||
9955 | ||
a8b3b0b6 CR |
9956 | /* Match the optional attribute specifiers for a type declaration. |
9957 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9958 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9959 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9960 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9961 | |
9962 | match | |
7d1f1e61 | 9963 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9964 | { |
a8b3b0b6 | 9965 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9966 | if (gfc_match (" , private") == MATCH_YES) |
9967 | { | |
d51347f9 | 9968 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9969 | { |
d51347f9 TB |
9970 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9971 | "specification part of a module"); | |
6de9cd9a DN |
9972 | return MATCH_ERROR; |
9973 | } | |
9974 | ||
524af0d6 | 9975 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9976 | return MATCH_ERROR; |
6de9cd9a | 9977 | } |
a8b3b0b6 | 9978 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9979 | { |
d51347f9 | 9980 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9981 | { |
d51347f9 TB |
9982 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9983 | "specification part of a module"); | |
6de9cd9a DN |
9984 | return MATCH_ERROR; |
9985 | } | |
9986 | ||
524af0d6 | 9987 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9988 | return MATCH_ERROR; |
6de9cd9a | 9989 | } |
52f49934 | 9990 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9991 | { |
9992 | /* If the type is defined to be bind(c) it then needs to make | |
9993 | sure that all fields are interoperable. This will | |
9994 | need to be a semantic check on the finished derived type. | |
9995 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9996 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9997 | return MATCH_ERROR; |
9998 | ||
9999 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
10000 | } | |
52f49934 DK |
10001 | else if (gfc_match (" , abstract") == MATCH_YES) |
10002 | { | |
524af0d6 | 10003 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
10004 | return MATCH_ERROR; |
10005 | ||
524af0d6 | 10006 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
10007 | return MATCH_ERROR; |
10008 | } | |
524af0d6 | 10009 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 10010 | { |
524af0d6 | 10011 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
10012 | return MATCH_ERROR; |
10013 | } | |
a8b3b0b6 CR |
10014 | else |
10015 | return MATCH_NO; | |
10016 | ||
10017 | /* If we get here, something matched. */ | |
10018 | return MATCH_YES; | |
10019 | } | |
10020 | ||
10021 | ||
f6288c24 FR |
10022 | /* Common function for type declaration blocks similar to derived types, such |
10023 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
10024 | does NOT have a generic symbol matching the name given by the user. | |
10025 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
10026 | for the creation of an independent symbol. | |
6442a6f4 | 10027 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
10028 | type to be created, and the flavor to add to the resulting symbol. */ |
10029 | ||
10030 | static bool | |
10031 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
10032 | gfc_symbol **result) | |
10033 | { | |
10034 | gfc_symbol *sym; | |
10035 | locus where; | |
10036 | ||
10037 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
10038 | ||
10039 | if (decl) | |
10040 | where = *decl; | |
10041 | else | |
10042 | where = gfc_current_locus; | |
10043 | ||
10044 | if (gfc_get_symbol (name, NULL, &sym)) | |
10045 | return false; | |
10046 | ||
10047 | if (!sym) | |
10048 | { | |
10049 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
10050 | return false; | |
10051 | } | |
10052 | ||
10053 | if (sym->components != NULL || sym->attr.zero_comp) | |
10054 | { | |
2f029c08 | 10055 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
10056 | sym->name, &sym->declared_at); |
10057 | return false; | |
10058 | } | |
10059 | ||
10060 | sym->declared_at = where; | |
10061 | ||
10062 | if (sym->attr.flavor != fl | |
10063 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
10064 | return false; | |
10065 | ||
10066 | if (!sym->hash_value) | |
10067 | /* Set the hash for the compound name for this type. */ | |
10068 | sym->hash_value = gfc_hash_value (sym); | |
10069 | ||
10070 | /* Normally the type is expected to have been completely parsed by the time | |
10071 | a field declaration with this type is seen. For unions, maps, and nested | |
10072 | structure declarations, we need to indicate that it is okay that we | |
10073 | haven't seen any components yet. This will be updated after the structure | |
10074 | is fully parsed. */ | |
10075 | sym->attr.zero_comp = 0; | |
10076 | ||
10077 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
10078 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
10079 | ||
10080 | if (result) *result = sym; | |
10081 | ||
10082 | return true; | |
10083 | } | |
10084 | ||
10085 | ||
10086 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
10087 | behaves identical to STRUCTURE blocks. */ | |
10088 | ||
10089 | match | |
10090 | gfc_match_map (void) | |
10091 | { | |
05b8fcb4 FR |
10092 | /* Counter used to give unique internal names to map structures. */ |
10093 | static unsigned int gfc_map_id = 0; | |
10094 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10095 | gfc_symbol *sym; | |
10096 | locus old_loc; | |
f6288c24 | 10097 | |
05b8fcb4 | 10098 | old_loc = gfc_current_locus; |
f6288c24 | 10099 | |
05b8fcb4 FR |
10100 | if (gfc_match_eos () != MATCH_YES) |
10101 | { | |
10102 | gfc_error ("Junk after MAP statement at %C"); | |
10103 | gfc_current_locus = old_loc; | |
10104 | return MATCH_ERROR; | |
10105 | } | |
f6288c24 | 10106 | |
05b8fcb4 FR |
10107 | /* Map blocks are anonymous so we make up unique names for the symbol table |
10108 | which are invalid Fortran identifiers. */ | |
10109 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 10110 | |
05b8fcb4 FR |
10111 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
10112 | return MATCH_ERROR; | |
f6288c24 | 10113 | |
05b8fcb4 | 10114 | gfc_new_block = sym; |
f6288c24 | 10115 | |
05b8fcb4 | 10116 | return MATCH_YES; |
f6288c24 FR |
10117 | } |
10118 | ||
10119 | ||
10120 | /* Match the opening of a UNION block. */ | |
10121 | ||
10122 | match | |
10123 | gfc_match_union (void) | |
10124 | { | |
05b8fcb4 FR |
10125 | /* Counter used to give unique internal names to union types. */ |
10126 | static unsigned int gfc_union_id = 0; | |
10127 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10128 | gfc_symbol *sym; | |
10129 | locus old_loc; | |
f6288c24 | 10130 | |
05b8fcb4 | 10131 | old_loc = gfc_current_locus; |
f6288c24 | 10132 | |
05b8fcb4 FR |
10133 | if (gfc_match_eos () != MATCH_YES) |
10134 | { | |
10135 | gfc_error ("Junk after UNION statement at %C"); | |
10136 | gfc_current_locus = old_loc; | |
10137 | return MATCH_ERROR; | |
10138 | } | |
f6288c24 | 10139 | |
05b8fcb4 FR |
10140 | /* Unions are anonymous so we make up unique names for the symbol table |
10141 | which are invalid Fortran identifiers. */ | |
10142 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 10143 | |
05b8fcb4 FR |
10144 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
10145 | return MATCH_ERROR; | |
f6288c24 | 10146 | |
05b8fcb4 | 10147 | gfc_new_block = sym; |
f6288c24 | 10148 | |
05b8fcb4 | 10149 | return MATCH_YES; |
f6288c24 FR |
10150 | } |
10151 | ||
10152 | ||
10153 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
10154 | matching the beginning of a derived type declaration with a few | |
10155 | twists. The resulting type symbol has no access control or other | |
10156 | interesting attributes. */ | |
10157 | ||
10158 | match | |
10159 | gfc_match_structure_decl (void) | |
10160 | { | |
05b8fcb4 FR |
10161 | /* Counter used to give unique internal names to anonymous structures. */ |
10162 | static unsigned int gfc_structure_id = 0; | |
10163 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10164 | gfc_symbol *sym; | |
10165 | match m; | |
10166 | locus where; | |
f6288c24 | 10167 | |
05b8fcb4 FR |
10168 | if (!flag_dec_structure) |
10169 | { | |
cf004230 FR |
10170 | gfc_error ("%s at %C is a DEC extension, enable with " |
10171 | "%<-fdec-structure%>", | |
10172 | "STRUCTURE"); | |
05b8fcb4 FR |
10173 | return MATCH_ERROR; |
10174 | } | |
f6288c24 | 10175 | |
05b8fcb4 | 10176 | name[0] = '\0'; |
f6288c24 | 10177 | |
05b8fcb4 FR |
10178 | m = gfc_match (" /%n/", name); |
10179 | if (m != MATCH_YES) | |
10180 | { | |
10181 | /* Non-nested structure declarations require a structure name. */ | |
10182 | if (!gfc_comp_struct (gfc_current_state ())) | |
10183 | { | |
10184 | gfc_error ("Structure name expected in non-nested structure " | |
10185 | "declaration at %C"); | |
10186 | return MATCH_ERROR; | |
10187 | } | |
10188 | /* This is an anonymous structure; make up a unique name for it | |
10189 | (upper-case letters never make it to symbol names from the source). | |
10190 | The important thing is initializing the type variable | |
10191 | and setting gfc_new_symbol, which is immediately used by | |
10192 | parse_structure () and variable_decl () to add components of | |
10193 | this type. */ | |
10194 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
10195 | } | |
f6288c24 | 10196 | |
05b8fcb4 FR |
10197 | where = gfc_current_locus; |
10198 | /* No field list allowed after non-nested structure declaration. */ | |
10199 | if (!gfc_comp_struct (gfc_current_state ()) | |
10200 | && gfc_match_eos () != MATCH_YES) | |
10201 | { | |
10202 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
10203 | return MATCH_ERROR; | |
10204 | } | |
f6288c24 | 10205 | |
05b8fcb4 FR |
10206 | /* Make sure the name is not the name of an intrinsic type. */ |
10207 | if (gfc_is_intrinsic_typename (name)) | |
10208 | { | |
2f029c08 | 10209 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
10210 | " intrinsic type", name); |
10211 | return MATCH_ERROR; | |
10212 | } | |
f6288c24 | 10213 | |
05b8fcb4 FR |
10214 | /* Store the actual type symbol for the structure with an upper-case first |
10215 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 10216 | |
51f03c6b | 10217 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 10218 | return MATCH_ERROR; |
f6288c24 | 10219 | |
05b8fcb4 FR |
10220 | gfc_new_block = sym; |
10221 | return MATCH_YES; | |
f6288c24 FR |
10222 | } |
10223 | ||
90051c26 FR |
10224 | |
10225 | /* This function does some work to determine which matcher should be used to | |
58b9de9e | 10226 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
90051c26 | 10227 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
58b9de9e | 10228 | * and [parameterized] derived type declarations. */ |
90051c26 FR |
10229 | |
10230 | match | |
10231 | gfc_match_type (gfc_statement *st) | |
10232 | { | |
10233 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10234 | match m; | |
10235 | locus old_loc; | |
10236 | ||
10237 | /* Requires -fdec. */ | |
10238 | if (!flag_dec) | |
10239 | return MATCH_NO; | |
10240 | ||
10241 | m = gfc_match ("type"); | |
10242 | if (m != MATCH_YES) | |
10243 | return m; | |
10244 | /* If we already have an error in the buffer, it is probably from failing to | |
10245 | * match a derived type data declaration. Let it happen. */ | |
10246 | else if (gfc_error_flag_test ()) | |
10247 | return MATCH_NO; | |
10248 | ||
10249 | old_loc = gfc_current_locus; | |
10250 | *st = ST_NONE; | |
10251 | ||
10252 | /* If we see an attribute list before anything else it's definitely a derived | |
10253 | * type declaration. */ | |
10254 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
58b9de9e | 10255 | goto derived; |
90051c26 FR |
10256 | |
10257 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
10258 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
10259 | m = gfc_match_name (name); | |
10260 | if (m != MATCH_YES) | |
10261 | { | |
10262 | /* Let print match if it can, otherwise throw an error from | |
10263 | * gfc_match_derived_decl. */ | |
10264 | gfc_current_locus = old_loc; | |
10265 | if (gfc_match_print () == MATCH_YES) | |
10266 | { | |
10267 | *st = ST_WRITE; | |
10268 | return MATCH_YES; | |
10269 | } | |
58b9de9e | 10270 | goto derived; |
90051c26 FR |
10271 | } |
10272 | ||
58b9de9e FR |
10273 | /* Check for EOS. */ |
10274 | if (gfc_match_eos () == MATCH_YES) | |
90051c26 FR |
10275 | { |
10276 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
10277 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
10278 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
10279 | * symbol which can be printed. */ | |
10280 | gfc_current_locus = old_loc; | |
10281 | m = gfc_match_derived_decl (); | |
10282 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
10283 | { | |
10284 | *st = ST_DERIVED_DECL; | |
10285 | return m; | |
10286 | } | |
90051c26 | 10287 | } |
58b9de9e FR |
10288 | else |
10289 | { | |
10290 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
10291 | like <type name(parameter)>. */ | |
10292 | gfc_gobble_whitespace (); | |
10293 | bool paren = gfc_peek_ascii_char () == '('; | |
10294 | if (paren) | |
10295 | { | |
10296 | if (strcmp ("is", name) == 0) | |
10297 | goto typeis; | |
10298 | else | |
10299 | goto derived; | |
10300 | } | |
10301 | } | |
10302 | ||
10303 | /* Treat TYPE... like PRINT... */ | |
10304 | gfc_current_locus = old_loc; | |
10305 | *st = ST_WRITE; | |
10306 | return gfc_match_print (); | |
90051c26 | 10307 | |
58b9de9e FR |
10308 | derived: |
10309 | gfc_current_locus = old_loc; | |
10310 | *st = ST_DERIVED_DECL; | |
10311 | return gfc_match_derived_decl (); | |
10312 | ||
10313 | typeis: | |
10314 | gfc_current_locus = old_loc; | |
10315 | *st = ST_TYPE_IS; | |
10316 | return gfc_match_type_is (); | |
90051c26 FR |
10317 | } |
10318 | ||
10319 | ||
a8b3b0b6 CR |
10320 | /* Match the beginning of a derived type declaration. If a type name |
10321 | was the result of a function, then it is possible to have a symbol | |
10322 | already to be known as a derived type yet have no components. */ | |
10323 | ||
10324 | match | |
10325 | gfc_match_derived_decl (void) | |
10326 | { | |
10327 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 10328 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 10329 | symbol_attribute attr; |
c3f34952 | 10330 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 10331 | gfc_symbol *extended; |
a8b3b0b6 CR |
10332 | match m; |
10333 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 10334 | bool seen_attr = false; |
c3f34952 | 10335 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
10336 | bool parameterized_type = false; |
10337 | bool seen_colons = false; | |
a8b3b0b6 | 10338 | |
f6288c24 | 10339 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
10340 | return MATCH_NO; |
10341 | ||
7d1f1e61 PT |
10342 | name[0] = '\0'; |
10343 | parent[0] = '\0'; | |
a8b3b0b6 | 10344 | gfc_clear_attr (&attr); |
7d1f1e61 | 10345 | extended = NULL; |
a8b3b0b6 CR |
10346 | |
10347 | do | |
10348 | { | |
7d1f1e61 | 10349 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
10350 | if (is_type_attr_spec == MATCH_ERROR) |
10351 | return MATCH_ERROR; | |
e7303e85 FXC |
10352 | if (is_type_attr_spec == MATCH_YES) |
10353 | seen_attr = true; | |
a8b3b0b6 | 10354 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 10355 | |
63a3341a PT |
10356 | /* Deal with derived type extensions. The extension attribute has |
10357 | been added to 'attr' but now the parent type must be found and | |
10358 | checked. */ | |
7d1f1e61 PT |
10359 | if (parent[0]) |
10360 | extended = check_extended_derived_type (parent); | |
10361 | ||
10362 | if (parent[0] && !extended) | |
10363 | return MATCH_ERROR; | |
10364 | ||
5bab4c96 PT |
10365 | m = gfc_match (" ::"); |
10366 | if (m == MATCH_YES) | |
10367 | { | |
10368 | seen_colons = true; | |
10369 | } | |
10370 | else if (seen_attr) | |
6de9cd9a DN |
10371 | { |
10372 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10373 | return MATCH_ERROR; | |
10374 | } | |
10375 | ||
c4770ba0 | 10376 | /* In free source form, need to check for TYPE XXX as oppose to TYPEXXX. |
0313a84a | 10377 | But, we need to simply return for TYPE(. */ |
c4770ba0 SK |
10378 | if (m == MATCH_NO && gfc_current_form == FORM_FREE) |
10379 | { | |
10380 | char c = gfc_peek_ascii_char (); | |
10381 | if (c == '(') | |
10382 | return m; | |
10383 | if (!gfc_is_whitespace (c)) | |
10384 | { | |
10385 | gfc_error ("Mangled derived type definition at %C"); | |
10386 | return MATCH_NO; | |
10387 | } | |
10388 | } | |
10389 | ||
5bab4c96 | 10390 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
10391 | if (m != MATCH_YES) |
10392 | return m; | |
10393 | ||
5bab4c96 PT |
10394 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10395 | derived type named 'is'. | |
10396 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
c4770ba0 | 10397 | and checking if this is a(n intrinsic) typename. This picks up |
5bab4c96 PT |
10398 | misplaced TYPE IS statements such as in select_type_1.f03. */ |
10399 | if (gfc_peek_ascii_char () == '(') | |
10400 | { | |
10401 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10402 | || (!seen_colons && !strcmp (name, "is"))) | |
10403 | return MATCH_NO; | |
10404 | parameterized_type = true; | |
10405 | } | |
10406 | ||
10407 | m = gfc_match_eos (); | |
10408 | if (m != MATCH_YES && !parameterized_type) | |
10409 | return m; | |
10410 | ||
e9c06563 TB |
10411 | /* Make sure the name is not the name of an intrinsic type. */ |
10412 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 10413 | { |
c4100eae | 10414 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 10415 | "type", name); |
6de9cd9a DN |
10416 | return MATCH_ERROR; |
10417 | } | |
10418 | ||
c3f34952 | 10419 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
10420 | return MATCH_ERROR; |
10421 | ||
c3f34952 | 10422 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 10423 | { |
1072bff8 SK |
10424 | if (gensym->ts.u.derived) |
10425 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10426 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10427 | else | |
10428 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10429 | gensym->name); | |
c3f34952 TB |
10430 | return MATCH_ERROR; |
10431 | } | |
10432 | ||
10433 | if (!gensym->attr.generic | |
524af0d6 | 10434 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10435 | return MATCH_ERROR; |
10436 | ||
10437 | if (!gensym->attr.function | |
524af0d6 | 10438 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10439 | return MATCH_ERROR; |
10440 | ||
e00e1954 SK |
10441 | if (gensym->attr.dummy) |
10442 | { | |
10443 | gfc_error ("Dummy argument %qs at %L cannot be a derived type at %C", | |
10444 | name, &gensym->declared_at); | |
10445 | return MATCH_ERROR; | |
10446 | } | |
10447 | ||
c3f34952 TB |
10448 | sym = gfc_find_dt_in_generic (gensym); |
10449 | ||
10450 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10451 | { | |
c4100eae | 10452 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 10453 | "defined", sym->name); |
6de9cd9a DN |
10454 | return MATCH_ERROR; |
10455 | } | |
10456 | ||
c3f34952 TB |
10457 | if (!sym) |
10458 | { | |
10459 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 10460 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 10461 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
10462 | head = gensym->generic; |
10463 | intr = gfc_get_interface (); | |
10464 | intr->sym = sym; | |
10465 | intr->where = gfc_current_locus; | |
10466 | intr->sym->declared_at = gfc_current_locus; | |
10467 | intr->next = head; | |
10468 | gensym->generic = intr; | |
10469 | gensym->attr.if_source = IFSRC_DECL; | |
10470 | } | |
10471 | ||
6de9cd9a DN |
10472 | /* The symbol may already have the derived attribute without the |
10473 | components. The ways this can happen is via a function | |
10474 | definition, an INTRINSIC statement or a subtype in another | |
10475 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 10476 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 10477 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 10478 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
10479 | return MATCH_ERROR; |
10480 | ||
6de9cd9a | 10481 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 10482 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 10483 | return MATCH_ERROR; |
c3f34952 TB |
10484 | else if (sym->attr.access == ACCESS_UNKNOWN |
10485 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 10486 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 10487 | sym->name, NULL)) |
c3f34952 TB |
10488 | return MATCH_ERROR; |
10489 | ||
10490 | if (sym->attr.access != ACCESS_UNKNOWN | |
10491 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10492 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 10493 | |
a8b3b0b6 CR |
10494 | /* See if the derived type was labeled as bind(c). */ |
10495 | if (attr.is_bind_c != 0) | |
10496 | sym->attr.is_bind_c = attr.is_bind_c; | |
10497 | ||
34523524 DK |
10498 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10499 | if (!sym->f2k_derived) | |
10500 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 10501 | |
5bab4c96 PT |
10502 | if (parameterized_type) |
10503 | { | |
276515e6 PT |
10504 | /* Ignore error or mismatches by going to the end of the statement |
10505 | in order to avoid the component declarations causing problems. */ | |
10506 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10507 | if (m != MATCH_YES) | |
10508 | gfc_error_recovery (); | |
84083a71 JW |
10509 | else |
10510 | sym->attr.pdt_template = 1; | |
5bab4c96 PT |
10511 | m = gfc_match_eos (); |
10512 | if (m != MATCH_YES) | |
f59986b2 PT |
10513 | { |
10514 | gfc_error_recovery (); | |
10515 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10516 | } | |
5bab4c96 PT |
10517 | } |
10518 | ||
7d1f1e61 PT |
10519 | if (extended && !sym->components) |
10520 | { | |
10521 | gfc_component *p; | |
5bab4c96 | 10522 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
10523 | |
10524 | /* Add the extended derived type as the first component. */ | |
10525 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
10526 | extended->refs++; |
10527 | gfc_set_sym_referenced (extended); | |
10528 | ||
10529 | p->ts.type = BT_DERIVED; | |
bc21d315 | 10530 | p->ts.u.derived = extended; |
7d1f1e61 | 10531 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 10532 | |
7c1dab0d JW |
10533 | /* Set extension level. */ |
10534 | if (extended->attr.extension == 255) | |
10535 | { | |
10536 | /* Since the extension field is 8 bit wide, we can only have | |
10537 | up to 255 extension levels. */ | |
c4100eae | 10538 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
10539 | extended->name, &extended->declared_at); |
10540 | return MATCH_ERROR; | |
10541 | } | |
10542 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
10543 | |
10544 | /* Provide the links between the extended type and its extension. */ | |
10545 | if (!extended->f2k_derived) | |
10546 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
10547 | |
10548 | /* Copy the extended type-param-name-list from the extended type, | |
10549 | append those of the extension and add the whole lot to the | |
10550 | extension. */ | |
10551 | if (extended->attr.pdt_template) | |
10552 | { | |
10553 | g = h = NULL; | |
10554 | sym->attr.pdt_template = 1; | |
10555 | for (f = extended->formal; f; f = f->next) | |
10556 | { | |
10557 | if (f == extended->formal) | |
10558 | { | |
10559 | g = gfc_get_formal_arglist (); | |
10560 | h = g; | |
10561 | } | |
10562 | else | |
10563 | { | |
10564 | g->next = gfc_get_formal_arglist (); | |
10565 | g = g->next; | |
10566 | } | |
10567 | g->sym = f->sym; | |
10568 | } | |
10569 | g->next = sym->formal; | |
10570 | sym->formal = h; | |
10571 | } | |
7d1f1e61 PT |
10572 | } |
10573 | ||
7c1dab0d JW |
10574 | if (!sym->hash_value) |
10575 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10576 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10577 | |
52f49934 DK |
10578 | /* Take over the ABSTRACT attribute. */ |
10579 | sym->attr.abstract = attr.abstract; | |
10580 | ||
6de9cd9a DN |
10581 | gfc_new_block = sym; |
10582 | ||
10583 | return MATCH_YES; | |
10584 | } | |
83d890b9 AL |
10585 | |
10586 | ||
f5acf0f2 | 10587 | /* Cray Pointees can be declared as: |
b3aefde2 | 10588 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10589 | |
32e8bb8e | 10590 | match |
83d890b9 AL |
10591 | gfc_mod_pointee_as (gfc_array_spec *as) |
10592 | { | |
10593 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10594 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10595 | as->cp_was_assumed = true; |
83d890b9 AL |
10596 | else if (as->type == AS_ASSUMED_SHAPE) |
10597 | { | |
10598 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10599 | return MATCH_ERROR; | |
10600 | } | |
10601 | return MATCH_YES; | |
10602 | } | |
25d8f0a2 TS |
10603 | |
10604 | ||
f5acf0f2 PT |
10605 | /* Match the enum definition statement, here we are trying to match |
10606 | the first line of enum definition statement. | |
25d8f0a2 TS |
10607 | Returns MATCH_YES if match is found. */ |
10608 | ||
10609 | match | |
10610 | gfc_match_enum (void) | |
10611 | { | |
10612 | match m; | |
f5acf0f2 | 10613 | |
25d8f0a2 TS |
10614 | m = gfc_match_eos (); |
10615 | if (m != MATCH_YES) | |
10616 | return m; | |
10617 | ||
524af0d6 | 10618 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10619 | return MATCH_ERROR; |
10620 | ||
10621 | return MATCH_YES; | |
10622 | } | |
10623 | ||
10624 | ||
31224396 SK |
10625 | /* Returns an initializer whose value is one higher than the value of the |
10626 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10627 | initializers value will be set to zero. The initializer's kind | |
10628 | will be set to gfc_c_int_kind. | |
10629 | ||
10630 | If -fshort-enums is given, the appropriate kind will be selected | |
10631 | later after all enumerators have been parsed. A warning is issued | |
10632 | here if an initializer exceeds gfc_c_int_kind. */ | |
10633 | ||
10634 | static gfc_expr * | |
10635 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10636 | { | |
10637 | gfc_expr *result; | |
b7e75771 | 10638 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10639 | |
10640 | mpz_init (result->value.integer); | |
10641 | ||
10642 | if (last_initializer != NULL) | |
10643 | { | |
10644 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10645 | result->where = last_initializer->where; | |
10646 | ||
10647 | if (gfc_check_integer_range (result->value.integer, | |
10648 | gfc_c_int_kind) != ARITH_OK) | |
10649 | { | |
10650 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10651 | return NULL; | |
10652 | } | |
10653 | } | |
10654 | else | |
10655 | { | |
10656 | /* Control comes here, if it's the very first enumerator and no | |
10657 | initializer has been given. It will be initialized to zero. */ | |
10658 | mpz_set_si (result->value.integer, 0); | |
10659 | } | |
10660 | ||
10661 | return result; | |
10662 | } | |
10663 | ||
10664 | ||
6133c68a TS |
10665 | /* Match a variable name with an optional initializer. When this |
10666 | subroutine is called, a variable is expected to be parsed next. | |
10667 | Depending on what is happening at the moment, updates either the | |
10668 | symbol table or the current interface. */ | |
10669 | ||
10670 | static match | |
10671 | enumerator_decl (void) | |
10672 | { | |
10673 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10674 | gfc_expr *initializer; | |
10675 | gfc_array_spec *as = NULL; | |
10676 | gfc_symbol *sym; | |
10677 | locus var_locus; | |
10678 | match m; | |
524af0d6 | 10679 | bool t; |
6133c68a TS |
10680 | locus old_locus; |
10681 | ||
10682 | initializer = NULL; | |
10683 | old_locus = gfc_current_locus; | |
10684 | ||
10685 | /* When we get here, we've just matched a list of attributes and | |
10686 | maybe a type and a double colon. The next thing we expect to see | |
10687 | is the name of the symbol. */ | |
10688 | m = gfc_match_name (name); | |
10689 | if (m != MATCH_YES) | |
10690 | goto cleanup; | |
10691 | ||
10692 | var_locus = gfc_current_locus; | |
10693 | ||
10694 | /* OK, we've successfully matched the declaration. Now put the | |
10695 | symbol in the current namespace. If we fail to create the symbol, | |
10696 | bail out. */ | |
524af0d6 | 10697 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10698 | { |
10699 | m = MATCH_ERROR; | |
10700 | goto cleanup; | |
10701 | } | |
10702 | ||
10703 | /* The double colon must be present in order to have initializers. | |
10704 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10705 | if (colon_seen) | |
10706 | { | |
10707 | if (gfc_match_char ('=') == MATCH_YES) | |
10708 | { | |
10709 | m = gfc_match_init_expr (&initializer); | |
10710 | if (m == MATCH_NO) | |
10711 | { | |
10712 | gfc_error ("Expected an initialization expression at %C"); | |
10713 | m = MATCH_ERROR; | |
10714 | } | |
10715 | ||
10716 | if (m != MATCH_YES) | |
10717 | goto cleanup; | |
10718 | } | |
10719 | } | |
10720 | ||
10721 | /* If we do not have an initializer, the initialization value of the | |
10722 | previous enumerator (stored in last_initializer) is incremented | |
10723 | by 1 and is used to initialize the current enumerator. */ | |
10724 | if (initializer == NULL) | |
31224396 | 10725 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10726 | |
6133c68a TS |
10727 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10728 | { | |
01e64c3d JJ |
10729 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10730 | &var_locus); | |
d51347f9 | 10731 | m = MATCH_ERROR; |
6133c68a TS |
10732 | goto cleanup; |
10733 | } | |
10734 | ||
10735 | /* Store this current initializer, for the next enumerator variable | |
10736 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10737 | use last_initializer below. */ | |
10738 | last_initializer = initializer; | |
10739 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10740 | ||
10741 | /* Maintain enumerator history. */ | |
10742 | gfc_find_symbol (name, NULL, 0, &sym); | |
10743 | create_enum_history (sym, last_initializer); | |
10744 | ||
524af0d6 | 10745 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10746 | |
10747 | cleanup: | |
10748 | /* Free stuff up and return. */ | |
10749 | gfc_free_expr (initializer); | |
10750 | ||
10751 | return m; | |
10752 | } | |
10753 | ||
10754 | ||
66e4ab31 | 10755 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10756 | |
10757 | match | |
10758 | gfc_match_enumerator_def (void) | |
10759 | { | |
10760 | match m; | |
524af0d6 | 10761 | bool t; |
d51347f9 | 10762 | |
25d8f0a2 | 10763 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10764 | |
25d8f0a2 TS |
10765 | m = gfc_match (" enumerator"); |
10766 | if (m != MATCH_YES) | |
10767 | return m; | |
6133c68a TS |
10768 | |
10769 | m = gfc_match (" :: "); | |
10770 | if (m == MATCH_ERROR) | |
10771 | return m; | |
10772 | ||
10773 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10774 | |
25d8f0a2 TS |
10775 | if (gfc_current_state () != COMP_ENUM) |
10776 | { | |
10777 | gfc_error ("ENUM definition statement expected before %C"); | |
10778 | gfc_free_enum_history (); | |
10779 | return MATCH_ERROR; | |
10780 | } | |
10781 | ||
10782 | (¤t_ts)->type = BT_INTEGER; | |
10783 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10784 | |
6133c68a TS |
10785 | gfc_clear_attr (¤t_attr); |
10786 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10787 | if (!t) |
25d8f0a2 | 10788 | { |
6133c68a | 10789 | m = MATCH_ERROR; |
25d8f0a2 TS |
10790 | goto cleanup; |
10791 | } | |
10792 | ||
25d8f0a2 TS |
10793 | for (;;) |
10794 | { | |
6133c68a | 10795 | m = enumerator_decl (); |
25d8f0a2 | 10796 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10797 | { |
10798 | gfc_free_enum_history (); | |
10799 | goto cleanup; | |
10800 | } | |
25d8f0a2 TS |
10801 | if (m == MATCH_NO) |
10802 | break; | |
10803 | ||
10804 | if (gfc_match_eos () == MATCH_YES) | |
10805 | goto cleanup; | |
10806 | if (gfc_match_char (',') != MATCH_YES) | |
10807 | break; | |
10808 | } | |
10809 | ||
10810 | if (gfc_current_state () == COMP_ENUM) | |
10811 | { | |
10812 | gfc_free_enum_history (); | |
10813 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10814 | m = MATCH_ERROR; | |
10815 | } | |
10816 | ||
10817 | cleanup: | |
10818 | gfc_free_array_spec (current_as); | |
10819 | current_as = NULL; | |
10820 | return m; | |
10821 | ||
10822 | } | |
10823 | ||
f6fad28e | 10824 | |
30b608eb DK |
10825 | /* Match binding attributes. */ |
10826 | ||
10827 | static match | |
713485cc | 10828 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10829 | { |
10830 | bool found_passing = false; | |
713485cc | 10831 | bool seen_ptr = false; |
90661f26 | 10832 | match m = MATCH_YES; |
30b608eb | 10833 | |
eea58adb | 10834 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10835 | this case the defaults are in there. */ |
10836 | ba->access = ACCESS_UNKNOWN; | |
10837 | ba->pass_arg = NULL; | |
10838 | ba->pass_arg_num = 0; | |
10839 | ba->nopass = 0; | |
10840 | ba->non_overridable = 0; | |
b0e5fa94 | 10841 | ba->deferred = 0; |
90661f26 | 10842 | ba->ppc = ppc; |
30b608eb DK |
10843 | |
10844 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10845 | m = gfc_match_char (','); |
10846 | if (m == MATCH_NO) | |
10847 | goto done; | |
30b608eb DK |
10848 | |
10849 | do | |
10850 | { | |
e157f736 DK |
10851 | /* Access specifier. */ |
10852 | ||
10853 | m = gfc_match (" public"); | |
30b608eb DK |
10854 | if (m == MATCH_ERROR) |
10855 | goto error; | |
10856 | if (m == MATCH_YES) | |
10857 | { | |
e157f736 | 10858 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10859 | { |
e157f736 | 10860 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10861 | goto error; |
10862 | } | |
10863 | ||
e157f736 | 10864 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10865 | continue; |
10866 | } | |
10867 | ||
e157f736 | 10868 | m = gfc_match (" private"); |
30b608eb DK |
10869 | if (m == MATCH_ERROR) |
10870 | goto error; | |
10871 | if (m == MATCH_YES) | |
10872 | { | |
e157f736 | 10873 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10874 | { |
e157f736 | 10875 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10876 | goto error; |
10877 | } | |
10878 | ||
e157f736 | 10879 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10880 | continue; |
10881 | } | |
10882 | ||
e157f736 DK |
10883 | /* If inside GENERIC, the following is not allowed. */ |
10884 | if (!generic) | |
30b608eb | 10885 | { |
30b608eb | 10886 | |
e157f736 DK |
10887 | /* NOPASS flag. */ |
10888 | m = gfc_match (" nopass"); | |
10889 | if (m == MATCH_ERROR) | |
10890 | goto error; | |
10891 | if (m == MATCH_YES) | |
30b608eb | 10892 | { |
e157f736 DK |
10893 | if (found_passing) |
10894 | { | |
10895 | gfc_error ("Binding attributes already specify passing," | |
10896 | " illegal NOPASS at %C"); | |
10897 | goto error; | |
10898 | } | |
10899 | ||
10900 | found_passing = true; | |
10901 | ba->nopass = 1; | |
10902 | continue; | |
30b608eb DK |
10903 | } |
10904 | ||
e157f736 DK |
10905 | /* PASS possibly including argument. */ |
10906 | m = gfc_match (" pass"); | |
10907 | if (m == MATCH_ERROR) | |
10908 | goto error; | |
10909 | if (m == MATCH_YES) | |
30b608eb | 10910 | { |
e157f736 DK |
10911 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10912 | ||
10913 | if (found_passing) | |
10914 | { | |
10915 | gfc_error ("Binding attributes already specify passing," | |
10916 | " illegal PASS at %C"); | |
10917 | goto error; | |
10918 | } | |
10919 | ||
10920 | m = gfc_match (" ( %n )", arg); | |
10921 | if (m == MATCH_ERROR) | |
10922 | goto error; | |
10923 | if (m == MATCH_YES) | |
51f03c6b | 10924 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10925 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10926 | ||
10927 | found_passing = true; | |
10928 | ba->nopass = 0; | |
10929 | continue; | |
30b608eb DK |
10930 | } |
10931 | ||
713485cc JW |
10932 | if (ppc) |
10933 | { | |
10934 | /* POINTER flag. */ | |
10935 | m = gfc_match (" pointer"); | |
10936 | if (m == MATCH_ERROR) | |
10937 | goto error; | |
10938 | if (m == MATCH_YES) | |
10939 | { | |
10940 | if (seen_ptr) | |
10941 | { | |
10942 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10943 | goto error; | |
10944 | } | |
10945 | ||
10946 | seen_ptr = true; | |
713485cc JW |
10947 | continue; |
10948 | } | |
10949 | } | |
10950 | else | |
10951 | { | |
10952 | /* NON_OVERRIDABLE flag. */ | |
10953 | m = gfc_match (" non_overridable"); | |
10954 | if (m == MATCH_ERROR) | |
10955 | goto error; | |
10956 | if (m == MATCH_YES) | |
10957 | { | |
10958 | if (ba->non_overridable) | |
10959 | { | |
10960 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10961 | goto error; | |
10962 | } | |
10963 | ||
10964 | ba->non_overridable = 1; | |
10965 | continue; | |
10966 | } | |
10967 | ||
10968 | /* DEFERRED flag. */ | |
10969 | m = gfc_match (" deferred"); | |
10970 | if (m == MATCH_ERROR) | |
10971 | goto error; | |
10972 | if (m == MATCH_YES) | |
10973 | { | |
10974 | if (ba->deferred) | |
10975 | { | |
10976 | gfc_error ("Duplicate DEFERRED at %C"); | |
10977 | goto error; | |
10978 | } | |
10979 | ||
10980 | ba->deferred = 1; | |
10981 | continue; | |
10982 | } | |
10983 | } | |
10984 | ||
30b608eb DK |
10985 | } |
10986 | ||
10987 | /* Nothing matching found. */ | |
e157f736 DK |
10988 | if (generic) |
10989 | gfc_error ("Expected access-specifier at %C"); | |
10990 | else | |
10991 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10992 | goto error; |
10993 | } | |
10994 | while (gfc_match_char (',') == MATCH_YES); | |
10995 | ||
b0e5fa94 DK |
10996 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10997 | if (ba->non_overridable && ba->deferred) | |
10998 | { | |
1fe61adf | 10999 | gfc_error ("NON_OVERRIDABLE and DEFERRED cannot both appear at %C"); |
b0e5fa94 DK |
11000 | goto error; |
11001 | } | |
11002 | ||
90661f26 JW |
11003 | m = MATCH_YES; |
11004 | ||
11005 | done: | |
e157f736 | 11006 | if (ba->access == ACCESS_UNKNOWN) |
d4beaf2a JW |
11007 | ba->access = ppc ? gfc_current_block()->component_access |
11008 | : gfc_typebound_default_access; | |
e157f736 | 11009 | |
713485cc JW |
11010 | if (ppc && !seen_ptr) |
11011 | { | |
11012 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
11013 | " at %C"); | |
11014 | goto error; | |
11015 | } | |
11016 | ||
90661f26 | 11017 | return m; |
30b608eb DK |
11018 | |
11019 | error: | |
30b608eb DK |
11020 | return MATCH_ERROR; |
11021 | } | |
11022 | ||
11023 | ||
11024 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
11025 | ||
11026 | static match | |
11027 | match_procedure_in_type (void) | |
11028 | { | |
11029 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11030 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 11031 | char* target = NULL, *ifc = NULL; |
3e15518b | 11032 | gfc_typebound_proc tb; |
30b608eb DK |
11033 | bool seen_colons; |
11034 | bool seen_attrs; | |
11035 | match m; | |
11036 | gfc_symtree* stree; | |
11037 | gfc_namespace* ns; | |
11038 | gfc_symbol* block; | |
1be17993 | 11039 | int num; |
30b608eb DK |
11040 | |
11041 | /* Check current state. */ | |
11042 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
11043 | block = gfc_state_stack->previous->sym; | |
11044 | gcc_assert (block); | |
11045 | ||
b0e5fa94 | 11046 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
11047 | if (gfc_match (" (") == MATCH_YES) |
11048 | { | |
b0e5fa94 DK |
11049 | m = gfc_match_name (target_buf); |
11050 | if (m == MATCH_ERROR) | |
11051 | return m; | |
11052 | if (m != MATCH_YES) | |
11053 | { | |
a4d9b221 | 11054 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
11055 | return MATCH_ERROR; |
11056 | } | |
11057 | ||
11058 | if (gfc_match (" )") != MATCH_YES) | |
11059 | { | |
a4d9b221 | 11060 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
11061 | return MATCH_ERROR; |
11062 | } | |
11063 | ||
1be17993 | 11064 | ifc = target_buf; |
30b608eb DK |
11065 | } |
11066 | ||
11067 | /* Construct the data structure. */ | |
ff5b6492 | 11068 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 11069 | tb.where = gfc_current_locus; |
30b608eb DK |
11070 | |
11071 | /* Match binding attributes. */ | |
3e15518b | 11072 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
11073 | if (m == MATCH_ERROR) |
11074 | return m; | |
11075 | seen_attrs = (m == MATCH_YES); | |
11076 | ||
1be17993 | 11077 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 11078 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
11079 | { |
11080 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
11081 | return MATCH_ERROR; | |
11082 | } | |
3e15518b | 11083 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
11084 | { |
11085 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
11086 | return MATCH_ERROR; | |
11087 | } | |
11088 | ||
30b608eb DK |
11089 | /* Match the colons. */ |
11090 | m = gfc_match (" ::"); | |
11091 | if (m == MATCH_ERROR) | |
11092 | return m; | |
11093 | seen_colons = (m == MATCH_YES); | |
11094 | if (seen_attrs && !seen_colons) | |
11095 | { | |
a4d9b221 | 11096 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
11097 | return MATCH_ERROR; |
11098 | } | |
11099 | ||
f5acf0f2 | 11100 | /* Match the binding names. */ |
1be17993 | 11101 | for(num=1;;num++) |
30b608eb | 11102 | { |
1be17993 JW |
11103 | m = gfc_match_name (name); |
11104 | if (m == MATCH_ERROR) | |
11105 | return m; | |
11106 | if (m == MATCH_NO) | |
b0e5fa94 | 11107 | { |
1be17993 | 11108 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
11109 | return MATCH_ERROR; |
11110 | } | |
11111 | ||
524af0d6 | 11112 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 11113 | return MATCH_ERROR; |
30b608eb | 11114 | |
1be17993 JW |
11115 | /* Try to match the '=> target', if it's there. */ |
11116 | target = ifc; | |
11117 | m = gfc_match (" =>"); | |
30b608eb DK |
11118 | if (m == MATCH_ERROR) |
11119 | return m; | |
1be17993 | 11120 | if (m == MATCH_YES) |
30b608eb | 11121 | { |
3e15518b | 11122 | if (tb.deferred) |
1be17993 | 11123 | { |
a4d9b221 | 11124 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
11125 | return MATCH_ERROR; |
11126 | } | |
11127 | ||
11128 | if (!seen_colons) | |
11129 | { | |
a4d9b221 | 11130 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
11131 | " at %C"); |
11132 | return MATCH_ERROR; | |
11133 | } | |
11134 | ||
11135 | m = gfc_match_name (target_buf); | |
11136 | if (m == MATCH_ERROR) | |
11137 | return m; | |
11138 | if (m == MATCH_NO) | |
11139 | { | |
a4d9b221 | 11140 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
11141 | return MATCH_ERROR; |
11142 | } | |
11143 | target = target_buf; | |
30b608eb | 11144 | } |
30b608eb | 11145 | |
1be17993 JW |
11146 | /* If no target was found, it has the same name as the binding. */ |
11147 | if (!target) | |
11148 | target = name; | |
30b608eb | 11149 | |
1be17993 JW |
11150 | /* Get the namespace to insert the symbols into. */ |
11151 | ns = block->f2k_derived; | |
11152 | gcc_assert (ns); | |
30b608eb | 11153 | |
1be17993 | 11154 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 11155 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 11156 | { |
c4100eae | 11157 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
11158 | "is not ABSTRACT", block->name); |
11159 | return MATCH_ERROR; | |
11160 | } | |
30b608eb | 11161 | |
1be17993 | 11162 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 11163 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
11164 | be already there but then typebound is still NULL. */ |
11165 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 11166 | if (stree && stree->n.tb) |
1be17993 | 11167 | { |
c4100eae MLI |
11168 | gfc_error ("There is already a procedure with binding name %qs for " |
11169 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
11170 | return MATCH_ERROR; |
11171 | } | |
b0e5fa94 | 11172 | |
1be17993 | 11173 | /* Insert it and set attributes. */ |
30b608eb | 11174 | |
9f23af48 MM |
11175 | if (!stree) |
11176 | { | |
11177 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
11178 | gcc_assert (stree); | |
11179 | } | |
3e15518b | 11180 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 11181 | |
3e15518b JW |
11182 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
11183 | false)) | |
1be17993 | 11184 | return MATCH_ERROR; |
3e15518b | 11185 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
11186 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
11187 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 11188 | |
1be17993 JW |
11189 | if (gfc_match_eos () == MATCH_YES) |
11190 | return MATCH_YES; | |
11191 | if (gfc_match_char (',') != MATCH_YES) | |
11192 | goto syntax; | |
e34ccb4c | 11193 | } |
30b608eb | 11194 | |
1be17993 JW |
11195 | syntax: |
11196 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
11197 | return MATCH_ERROR; | |
30b608eb DK |
11198 | } |
11199 | ||
11200 | ||
e157f736 DK |
11201 | /* Match a GENERIC procedure binding inside a derived type. */ |
11202 | ||
11203 | match | |
11204 | gfc_match_generic (void) | |
11205 | { | |
11206 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 11207 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
11208 | gfc_symbol* block; |
11209 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
11210 | gfc_typebound_proc* tb; | |
e157f736 | 11211 | gfc_namespace* ns; |
94747289 DK |
11212 | interface_type op_type; |
11213 | gfc_intrinsic_op op; | |
e157f736 DK |
11214 | match m; |
11215 | ||
11216 | /* Check current state. */ | |
11217 | if (gfc_current_state () == COMP_DERIVED) | |
11218 | { | |
11219 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
11220 | return MATCH_ERROR; | |
11221 | } | |
11222 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
11223 | return MATCH_NO; | |
11224 | block = gfc_state_stack->previous->sym; | |
11225 | ns = block->f2k_derived; | |
11226 | gcc_assert (block && ns); | |
11227 | ||
ff5b6492 MM |
11228 | memset (&tbattr, 0, sizeof (tbattr)); |
11229 | tbattr.where = gfc_current_locus; | |
11230 | ||
e157f736 | 11231 | /* See if we get an access-specifier. */ |
713485cc | 11232 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
11233 | if (m == MATCH_ERROR) |
11234 | goto error; | |
11235 | ||
11236 | /* Now the colons, those are required. */ | |
11237 | if (gfc_match (" ::") != MATCH_YES) | |
11238 | { | |
a4d9b221 | 11239 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
11240 | goto error; |
11241 | } | |
11242 | ||
94747289 DK |
11243 | /* Match the binding name; depending on type (operator / generic) format |
11244 | it for future error messages into bind_name. */ | |
f5acf0f2 | 11245 | |
94747289 | 11246 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
11247 | if (m == MATCH_ERROR) |
11248 | return MATCH_ERROR; | |
11249 | if (m == MATCH_NO) | |
11250 | { | |
94747289 | 11251 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
11252 | goto error; |
11253 | } | |
11254 | ||
94747289 | 11255 | switch (op_type) |
e157f736 | 11256 | { |
94747289 | 11257 | case INTERFACE_GENERIC: |
e73d3ca6 | 11258 | case INTERFACE_DTIO: |
94747289 DK |
11259 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
11260 | break; | |
f5acf0f2 | 11261 | |
94747289 DK |
11262 | case INTERFACE_USER_OP: |
11263 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
11264 | break; | |
f5acf0f2 | 11265 | |
94747289 DK |
11266 | case INTERFACE_INTRINSIC_OP: |
11267 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
11268 | gfc_op2string (op)); | |
11269 | break; | |
11270 | ||
377e37c1 SK |
11271 | case INTERFACE_NAMELESS: |
11272 | gfc_error ("Malformed GENERIC statement at %C"); | |
11273 | goto error; | |
11274 | break; | |
11275 | ||
94747289 DK |
11276 | default: |
11277 | gcc_unreachable (); | |
11278 | } | |
e34ccb4c | 11279 | |
94747289 DK |
11280 | /* Match the required =>. */ |
11281 | if (gfc_match (" =>") != MATCH_YES) | |
11282 | { | |
a4d9b221 | 11283 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
11284 | goto error; |
11285 | } | |
f5acf0f2 | 11286 | |
94747289 DK |
11287 | /* Try to find existing GENERIC binding with this name / for this operator; |
11288 | if there is something, check that it is another GENERIC and then extend | |
11289 | it rather than building a new node. Otherwise, create it and put it | |
11290 | at the right position. */ | |
11291 | ||
11292 | switch (op_type) | |
11293 | { | |
e73d3ca6 | 11294 | case INTERFACE_DTIO: |
94747289 DK |
11295 | case INTERFACE_USER_OP: |
11296 | case INTERFACE_GENERIC: | |
11297 | { | |
11298 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
11299 | gfc_symtree* st; | |
11300 | ||
11301 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 11302 | tb = st ? st->n.tb : NULL; |
94747289 DK |
11303 | break; |
11304 | } | |
11305 | ||
11306 | case INTERFACE_INTRINSIC_OP: | |
11307 | tb = ns->tb_op[op]; | |
11308 | break; | |
11309 | ||
11310 | default: | |
11311 | gcc_unreachable (); | |
11312 | } | |
11313 | ||
11314 | if (tb) | |
11315 | { | |
e34ccb4c | 11316 | if (!tb->is_generic) |
e157f736 | 11317 | { |
94747289 | 11318 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 11319 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 11320 | " %qs for the derived type %qs at %C", |
94747289 | 11321 | bind_name, block->name); |
e157f736 DK |
11322 | goto error; |
11323 | } | |
11324 | ||
e157f736 DK |
11325 | if (tb->access != tbattr.access) |
11326 | { | |
11327 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 11328 | " defined binding %qs", bind_name); |
e157f736 DK |
11329 | goto error; |
11330 | } | |
11331 | } | |
11332 | else | |
11333 | { | |
3e15518b | 11334 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
11335 | tb->where = gfc_current_locus; |
11336 | tb->access = tbattr.access; | |
11337 | tb->is_generic = 1; | |
11338 | tb->u.generic = NULL; | |
94747289 DK |
11339 | |
11340 | switch (op_type) | |
11341 | { | |
e73d3ca6 | 11342 | case INTERFACE_DTIO: |
94747289 DK |
11343 | case INTERFACE_GENERIC: |
11344 | case INTERFACE_USER_OP: | |
11345 | { | |
11346 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
11347 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
11348 | &ns->tb_sym_root, name); | |
94747289 DK |
11349 | gcc_assert (st); |
11350 | st->n.tb = tb; | |
11351 | ||
11352 | break; | |
11353 | } | |
f5acf0f2 | 11354 | |
94747289 DK |
11355 | case INTERFACE_INTRINSIC_OP: |
11356 | ns->tb_op[op] = tb; | |
11357 | break; | |
11358 | ||
11359 | default: | |
11360 | gcc_unreachable (); | |
11361 | } | |
e157f736 DK |
11362 | } |
11363 | ||
11364 | /* Now, match all following names as specific targets. */ | |
11365 | do | |
11366 | { | |
11367 | gfc_symtree* target_st; | |
11368 | gfc_tbp_generic* target; | |
11369 | ||
11370 | m = gfc_match_name (name); | |
11371 | if (m == MATCH_ERROR) | |
11372 | goto error; | |
11373 | if (m == MATCH_NO) | |
11374 | { | |
11375 | gfc_error ("Expected specific binding name at %C"); | |
11376 | goto error; | |
11377 | } | |
11378 | ||
e34ccb4c | 11379 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
11380 | |
11381 | /* See if this is a duplicate specification. */ | |
11382 | for (target = tb->u.generic; target; target = target->next) | |
11383 | if (target_st == target->specific_st) | |
11384 | { | |
c4100eae MLI |
11385 | gfc_error ("%qs already defined as specific binding for the" |
11386 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
11387 | goto error; |
11388 | } | |
11389 | ||
e157f736 DK |
11390 | target = gfc_get_tbp_generic (); |
11391 | target->specific_st = target_st; | |
11392 | target->specific = NULL; | |
11393 | target->next = tb->u.generic; | |
218e1228 TB |
11394 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11395 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
11396 | tb->u.generic = target; |
11397 | } | |
11398 | while (gfc_match (" ,") == MATCH_YES); | |
11399 | ||
11400 | /* Here should be the end. */ | |
11401 | if (gfc_match_eos () != MATCH_YES) | |
11402 | { | |
11403 | gfc_error ("Junk after GENERIC binding at %C"); | |
11404 | goto error; | |
11405 | } | |
11406 | ||
11407 | return MATCH_YES; | |
11408 | ||
11409 | error: | |
11410 | return MATCH_ERROR; | |
11411 | } | |
11412 | ||
11413 | ||
34523524 DK |
11414 | /* Match a FINAL declaration inside a derived type. */ |
11415 | ||
11416 | match | |
11417 | gfc_match_final_decl (void) | |
11418 | { | |
11419 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11420 | gfc_symbol* sym; | |
11421 | match m; | |
11422 | gfc_namespace* module_ns; | |
11423 | bool first, last; | |
30b608eb | 11424 | gfc_symbol* block; |
34523524 | 11425 | |
33344e0f JW |
11426 | if (gfc_current_form == FORM_FREE) |
11427 | { | |
11428 | char c = gfc_peek_ascii_char (); | |
11429 | if (!gfc_is_whitespace (c) && c != ':') | |
11430 | return MATCH_NO; | |
11431 | } | |
f5acf0f2 | 11432 | |
30b608eb | 11433 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 11434 | { |
33344e0f JW |
11435 | if (gfc_current_form == FORM_FIXED) |
11436 | return MATCH_NO; | |
11437 | ||
34523524 | 11438 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 11439 | "CONTAINS section"); |
34523524 DK |
11440 | return MATCH_ERROR; |
11441 | } | |
11442 | ||
30b608eb DK |
11443 | block = gfc_state_stack->previous->sym; |
11444 | gcc_assert (block); | |
34523524 | 11445 | |
30b608eb DK |
11446 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11447 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
11448 | { |
11449 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11450 | " specification part of a MODULE"); | |
11451 | return MATCH_ERROR; | |
11452 | } | |
11453 | ||
11454 | module_ns = gfc_current_ns; | |
11455 | gcc_assert (module_ns); | |
11456 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11457 | ||
11458 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11459 | if (gfc_match (" ::") == MATCH_ERROR) | |
11460 | return MATCH_ERROR; | |
11461 | ||
11462 | /* Match the sequence of procedure names. */ | |
11463 | first = true; | |
11464 | last = false; | |
11465 | do | |
11466 | { | |
11467 | gfc_finalizer* f; | |
11468 | ||
11469 | if (first && gfc_match_eos () == MATCH_YES) | |
11470 | { | |
11471 | gfc_error ("Empty FINAL at %C"); | |
11472 | return MATCH_ERROR; | |
11473 | } | |
11474 | ||
11475 | m = gfc_match_name (name); | |
11476 | if (m == MATCH_NO) | |
11477 | { | |
11478 | gfc_error ("Expected module procedure name at %C"); | |
11479 | return MATCH_ERROR; | |
11480 | } | |
11481 | else if (m != MATCH_YES) | |
11482 | return MATCH_ERROR; | |
11483 | ||
11484 | if (gfc_match_eos () == MATCH_YES) | |
11485 | last = true; | |
11486 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11487 | { | |
a4d9b221 | 11488 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
11489 | return MATCH_ERROR; |
11490 | } | |
11491 | ||
11492 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11493 | { | |
c4100eae | 11494 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
11495 | return MATCH_ERROR; |
11496 | } | |
11497 | ||
11498 | /* Mark the symbol as module procedure. */ | |
11499 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 11500 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
11501 | return MATCH_ERROR; |
11502 | ||
11503 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 11504 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 11505 | if (f->proc_sym == sym) |
34523524 | 11506 | { |
546c8974 | 11507 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
11508 | name); |
11509 | return MATCH_ERROR; | |
11510 | } | |
11511 | ||
11512 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 11513 | gcc_assert (block->f2k_derived); |
2050626a | 11514 | sym->refs++; |
ece3f663 | 11515 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
11516 | f->proc_sym = sym; |
11517 | f->proc_tree = NULL; | |
34523524 | 11518 | f->where = gfc_current_locus; |
30b608eb DK |
11519 | f->next = block->f2k_derived->finalizers; |
11520 | block->f2k_derived->finalizers = f; | |
34523524 DK |
11521 | |
11522 | first = false; | |
11523 | } | |
11524 | while (!last); | |
11525 | ||
11526 | return MATCH_YES; | |
11527 | } | |
08a6b8e0 TB |
11528 | |
11529 | ||
11530 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
11531 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11532 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11533 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11534 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11535 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11536 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11537 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
11538 | }; |
11539 | ||
11540 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11541 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11542 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11543 | ||
11544 | TODO: We should support all GCC attributes using the same syntax for | |
11545 | the attribute list, i.e. the list in C | |
11546 | __attributes(( attribute-list )) | |
11547 | matches then | |
11548 | !GCC$ ATTRIBUTES attribute-list :: | |
11549 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11550 | saved into a TREE. | |
11551 | ||
11552 | As there is absolutely no risk of confusion, we should never return | |
11553 | MATCH_NO. */ | |
11554 | match | |
11555 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 11556 | { |
08a6b8e0 TB |
11557 | symbol_attribute attr; |
11558 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11559 | unsigned id; | |
11560 | gfc_symbol *sym; | |
11561 | match m; | |
11562 | ||
11563 | gfc_clear_attr (&attr); | |
11564 | for(;;) | |
11565 | { | |
11566 | char ch; | |
11567 | ||
11568 | if (gfc_match_name (name) != MATCH_YES) | |
11569 | return MATCH_ERROR; | |
11570 | ||
11571 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11572 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11573 | break; | |
11574 | ||
11575 | if (id == EXT_ATTR_LAST) | |
11576 | { | |
11577 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11578 | return MATCH_ERROR; | |
11579 | } | |
11580 | ||
524af0d6 | 11581 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11582 | return MATCH_ERROR; |
11583 | ||
11584 | gfc_gobble_whitespace (); | |
11585 | ch = gfc_next_ascii_char (); | |
11586 | if (ch == ':') | |
11587 | { | |
11588 | /* This is the successful exit condition for the loop. */ | |
11589 | if (gfc_next_ascii_char () == ':') | |
11590 | break; | |
11591 | } | |
11592 | ||
11593 | if (ch == ',') | |
11594 | continue; | |
11595 | ||
11596 | goto syntax; | |
11597 | } | |
11598 | ||
11599 | if (gfc_match_eos () == MATCH_YES) | |
11600 | goto syntax; | |
11601 | ||
11602 | for(;;) | |
11603 | { | |
11604 | m = gfc_match_name (name); | |
11605 | if (m != MATCH_YES) | |
11606 | return m; | |
11607 | ||
11608 | if (find_special (name, &sym, true)) | |
11609 | return MATCH_ERROR; | |
f5acf0f2 | 11610 | |
08a6b8e0 TB |
11611 | sym->attr.ext_attr |= attr.ext_attr; |
11612 | ||
11613 | if (gfc_match_eos () == MATCH_YES) | |
11614 | break; | |
11615 | ||
11616 | if (gfc_match_char (',') != MATCH_YES) | |
11617 | goto syntax; | |
11618 | } | |
11619 | ||
11620 | return MATCH_YES; | |
11621 | ||
11622 | syntax: | |
11623 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11624 | return MATCH_ERROR; | |
11625 | } | |
170a8bd6 EB |
11626 | |
11627 | ||
11628 | /* Match a !GCC$ UNROLL statement of the form: | |
11629 | !GCC$ UNROLL n | |
11630 | ||
11631 | The parameter n is the number of times we are supposed to unroll. | |
11632 | ||
11633 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11634 | match | |
11635 | gfc_match_gcc_unroll (void) | |
11636 | { | |
11637 | int value; | |
11638 | ||
11639 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11640 | { | |
11641 | if (value < 0 || value > USHRT_MAX) | |
11642 | { | |
11643 | gfc_error ("%<GCC unroll%> directive requires a" | |
11644 | " non-negative integral constant" | |
11645 | " less than or equal to %u at %C", | |
11646 | USHRT_MAX | |
11647 | ); | |
11648 | return MATCH_ERROR; | |
11649 | } | |
11650 | if (gfc_match_eos () == MATCH_YES) | |
11651 | { | |
11652 | directive_unroll = value == 0 ? 1 : value; | |
11653 | return MATCH_YES; | |
11654 | } | |
11655 | } | |
11656 | ||
11657 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11658 | return MATCH_ERROR; | |
11659 | } | |
facf0354 | 11660 | |
e8cecccc | 11661 | /* Match a !GCC$ builtin (b) attributes simd flags if('target') form: |
facf0354 ML |
11662 | |
11663 | The parameter b is name of a middle-end built-in. | |
e8cecccc ML |
11664 | FLAGS is optional and must be one of: |
11665 | - (inbranch) | |
11666 | - (notinbranch) | |
11667 | ||
11668 | IF('target') is optional and TARGET is a name of a multilib ABI. | |
facf0354 ML |
11669 | |
11670 | When we come here, we have already matched the !GCC$ builtin string. */ | |
e8cecccc | 11671 | |
facf0354 ML |
11672 | match |
11673 | gfc_match_gcc_builtin (void) | |
11674 | { | |
11675 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
e8cecccc | 11676 | char target[GFC_MAX_SYMBOL_LEN + 1]; |
facf0354 ML |
11677 | |
11678 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11679 | return MATCH_ERROR; | |
11680 | ||
11681 | gfc_simd_clause clause = SIMD_NONE; | |
11682 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11683 | clause = SIMD_NOTINBRANCH; | |
11684 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11685 | clause = SIMD_INBRANCH; | |
11686 | ||
e8cecccc ML |
11687 | if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES) |
11688 | { | |
11689 | const char *abi = targetm.get_multilib_abi_name (); | |
11690 | if (abi == NULL || strcmp (abi, target) != 0) | |
11691 | return MATCH_YES; | |
11692 | } | |
11693 | ||
facf0354 ML |
11694 | if (gfc_vectorized_builtins == NULL) |
11695 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11696 | ||
11697 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11698 | sprintf (r, "__builtin_%s", builtin); | |
11699 | ||
11700 | bool existed; | |
11701 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11702 | value |= clause; | |
11703 | if (existed) | |
11704 | free (r); | |
11705 | ||
11706 | return MATCH_YES; | |
11707 | } | |
2bd86b95 HA |
11708 | |
11709 | /* Match an !GCC$ IVDEP statement. | |
11710 | When we come here, we have already matched the !GCC$ IVDEP string. */ | |
11711 | ||
11712 | match | |
11713 | gfc_match_gcc_ivdep (void) | |
11714 | { | |
11715 | if (gfc_match_eos () == MATCH_YES) | |
11716 | { | |
11717 | directive_ivdep = true; | |
11718 | return MATCH_YES; | |
11719 | } | |
11720 | ||
11721 | gfc_error ("Syntax error in !GCC$ IVDEP directive at %C"); | |
11722 | return MATCH_ERROR; | |
11723 | } | |
11724 | ||
11725 | /* Match an !GCC$ VECTOR statement. | |
11726 | When we come here, we have already matched the !GCC$ VECTOR string. */ | |
11727 | ||
11728 | match | |
11729 | gfc_match_gcc_vector (void) | |
11730 | { | |
11731 | if (gfc_match_eos () == MATCH_YES) | |
11732 | { | |
11733 | directive_vector = true; | |
11734 | directive_novector = false; | |
11735 | return MATCH_YES; | |
11736 | } | |
11737 | ||
11738 | gfc_error ("Syntax error in !GCC$ VECTOR directive at %C"); | |
11739 | return MATCH_ERROR; | |
11740 | } | |
11741 | ||
11742 | /* Match an !GCC$ NOVECTOR statement. | |
11743 | When we come here, we have already matched the !GCC$ NOVECTOR string. */ | |
11744 | ||
11745 | match | |
11746 | gfc_match_gcc_novector (void) | |
11747 | { | |
11748 | if (gfc_match_eos () == MATCH_YES) | |
11749 | { | |
11750 | directive_novector = true; | |
11751 | directive_vector = false; | |
11752 | return MATCH_YES; | |
11753 | } | |
11754 | ||
11755 | gfc_error ("Syntax error in !GCC$ NOVECTOR directive at %C"); | |
11756 | return MATCH_ERROR; | |
11757 | } |