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6de9cd9a | 1 | /* Declaration statement matcher |
a5544970 | 2 | Copyright (C) 2002-2019 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. */ | |
699 | ref = e->ref; | |
700 | if (e->symtree->n.sym->ts.type == BT_DERIVED | |
701 | && e->symtree->n.sym->attr.pointer | |
702 | && ref->type == REF_COMPONENT) | |
703 | goto partref; | |
704 | ||
705 | for (; ref; ref = ref->next) | |
706 | if (ref->type == REF_COMPONENT | |
707 | && ref->u.c.component->attr.pointer | |
708 | && ref->next) | |
709 | goto partref; | |
02543f02 SK |
710 | } |
711 | ||
7b901ac4 | 712 | m = top_val_list (new_data); |
294fbfc8 TS |
713 | if (m != MATCH_YES) |
714 | goto cleanup; | |
715 | ||
7b901ac4 KG |
716 | new_data->next = gfc_current_ns->data; |
717 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
718 | |
719 | if (gfc_match_eos () == MATCH_YES) | |
720 | break; | |
721 | ||
722 | gfc_match_char (','); /* Optional comma */ | |
723 | } | |
724 | ||
ca39e6f2 | 725 | set_in_match_data (false); |
2220652d | 726 | |
294fbfc8 TS |
727 | if (gfc_pure (NULL)) |
728 | { | |
729 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
730 | return MATCH_ERROR; | |
731 | } | |
ccd7751b | 732 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 733 | |
294fbfc8 TS |
734 | return MATCH_YES; |
735 | ||
bebf94af SK |
736 | partref: |
737 | ||
738 | gfc_error ("part-ref with pointer attribute near %L is not " | |
739 | "rightmost part-ref of data-stmt-object", | |
740 | &e->where); | |
741 | ||
294fbfc8 | 742 | cleanup: |
ca39e6f2 | 743 | set_in_match_data (false); |
7b901ac4 | 744 | gfc_free_data (new_data); |
294fbfc8 TS |
745 | return MATCH_ERROR; |
746 | } | |
747 | ||
748 | ||
749 | /************************ Declaration statements *********************/ | |
750 | ||
d3a9eea2 | 751 | |
f6288c24 FR |
752 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
753 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 754 | and is surrounded by '/'. |
f6288c24 FR |
755 | The typespec ts must match the typespec of the variable which the |
756 | clist is initializing. | |
6442a6f4 | 757 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
758 | corresponding to array elements or a scalar (as == NULL). */ |
759 | ||
760 | static match | |
761 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
762 | { | |
763 | gfc_constructor_base array_head = NULL; | |
764 | gfc_expr *expr = NULL; | |
e11449d1 | 765 | match m = MATCH_ERROR; |
f6288c24 | 766 | locus where; |
9b24c104 | 767 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
768 | bool scalar; |
769 | int cmp; | |
770 | ||
771 | gcc_assert (ts); | |
772 | ||
f6288c24 FR |
773 | /* We have already matched '/' - now look for a constant list, as with |
774 | top_val_list from decl.c, but append the result to an array. */ | |
775 | if (gfc_match ("/") == MATCH_YES) | |
776 | { | |
777 | gfc_error ("Empty old style initializer list at %C"); | |
e11449d1 | 778 | return MATCH_ERROR; |
f6288c24 FR |
779 | } |
780 | ||
781 | where = gfc_current_locus; | |
e11449d1 FR |
782 | scalar = !as || !as->rank; |
783 | ||
784 | if (!scalar && !spec_size (as, &as_size)) | |
785 | { | |
786 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
787 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
788 | /* Nothing to cleanup yet. */ | |
789 | return MATCH_ERROR; | |
790 | } | |
791 | ||
792 | mpz_init_set_ui (repeat, 0); | |
793 | ||
f6288c24 FR |
794 | for (;;) |
795 | { | |
796 | m = match_data_constant (&expr); | |
797 | if (m != MATCH_YES) | |
798 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
799 | if (m == MATCH_NO) | |
800 | goto syntax; | |
801 | if (m == MATCH_ERROR) | |
802 | goto cleanup; | |
803 | ||
804 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
805 | if ( gfc_match_char ('*') == MATCH_YES) | |
806 | { | |
807 | if (scalar) | |
808 | { | |
809 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
810 | goto cleanup; | |
811 | } | |
812 | if (expr->ts.type != BT_INTEGER) | |
813 | { | |
814 | gfc_error ("Repeat spec must be an integer at %C"); | |
815 | goto cleanup; | |
816 | } | |
817 | mpz_set (repeat, expr->value.integer); | |
818 | gfc_free_expr (expr); | |
819 | expr = NULL; | |
820 | ||
821 | m = match_data_constant (&expr); | |
822 | if (m == MATCH_NO) | |
e11449d1 FR |
823 | { |
824 | m = MATCH_ERROR; | |
825 | gfc_error ("Expected data constant after repeat spec at %C"); | |
826 | } | |
f6288c24 FR |
827 | if (m != MATCH_YES) |
828 | goto cleanup; | |
829 | } | |
830 | /* No repeat spec, we matched the data constant itself. */ | |
831 | else | |
832 | mpz_set_ui (repeat, 1); | |
833 | ||
834 | if (!scalar) | |
835 | { | |
836 | /* Add the constant initializer as many times as repeated. */ | |
837 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
838 | { | |
839 | /* Make sure types of elements match */ | |
840 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
841 | && !gfc_convert_type (expr, ts, 1)) | |
842 | goto cleanup; | |
843 | ||
844 | gfc_constructor_append_expr (&array_head, | |
845 | gfc_copy_expr (expr), &gfc_current_locus); | |
846 | } | |
847 | ||
848 | gfc_free_expr (expr); | |
849 | expr = NULL; | |
850 | } | |
851 | ||
852 | /* For scalar initializers quit after one element. */ | |
853 | else | |
854 | { | |
855 | if(gfc_match_char ('/') != MATCH_YES) | |
856 | { | |
857 | gfc_error ("End of scalar initializer expected at %C"); | |
858 | goto cleanup; | |
859 | } | |
860 | break; | |
861 | } | |
862 | ||
863 | if (gfc_match_char ('/') == MATCH_YES) | |
864 | break; | |
865 | if (gfc_match_char (',') == MATCH_NO) | |
866 | goto syntax; | |
867 | } | |
868 | ||
e11449d1 FR |
869 | /* If we break early from here out, we encountered an error. */ |
870 | m = MATCH_ERROR; | |
871 | ||
f6288c24 FR |
872 | /* Set up expr as an array constructor. */ |
873 | if (!scalar) | |
874 | { | |
875 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
876 | expr->ts = *ts; | |
877 | expr->value.constructor = array_head; | |
878 | ||
879 | expr->rank = as->rank; | |
880 | expr->shape = gfc_get_shape (expr->rank); | |
881 | ||
9b24c104 FR |
882 | /* Validate sizes. We built expr ourselves, so cons_size will be |
883 | constant (we fail above for non-constant expressions). | |
e11449d1 | 884 | We still need to verify that the sizes match. */ |
9b24c104 | 885 | gcc_assert (gfc_array_size (expr, &cons_size)); |
e11449d1 FR |
886 | cmp = mpz_cmp (cons_size, as_size); |
887 | if (cmp < 0) | |
888 | gfc_error ("Not enough elements in array initializer at %C"); | |
889 | else if (cmp > 0) | |
890 | gfc_error ("Too many elements in array initializer at %C"); | |
9b24c104 | 891 | mpz_clear (cons_size); |
f6288c24 | 892 | if (cmp) |
9b24c104 | 893 | goto cleanup; |
f6288c24 FR |
894 | } |
895 | ||
896 | /* Make sure scalar types match. */ | |
897 | else if (!gfc_compare_types (&expr->ts, ts) | |
898 | && !gfc_convert_type (expr, ts, 1)) | |
899 | goto cleanup; | |
900 | ||
901 | if (expr->ts.u.cl) | |
902 | expr->ts.u.cl->length_from_typespec = 1; | |
903 | ||
904 | *result = expr; | |
e11449d1 FR |
905 | m = MATCH_YES; |
906 | goto done; | |
f6288c24 FR |
907 | |
908 | syntax: | |
e11449d1 | 909 | m = MATCH_ERROR; |
f6288c24 FR |
910 | gfc_error ("Syntax error in old style initializer list at %C"); |
911 | ||
912 | cleanup: | |
913 | if (expr) | |
914 | expr->value.constructor = NULL; | |
915 | gfc_free_expr (expr); | |
916 | gfc_constructor_free (array_head); | |
e11449d1 FR |
917 | |
918 | done: | |
f6288c24 | 919 | mpz_clear (repeat); |
e11449d1 FR |
920 | if (!scalar) |
921 | mpz_clear (as_size); | |
922 | return m; | |
f6288c24 FR |
923 | } |
924 | ||
925 | ||
eea58adb | 926 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 927 | |
524af0d6 | 928 | static bool |
d3a9eea2 TB |
929 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
930 | { | |
93d1ab50 | 931 | int i, j; |
d3a9eea2 | 932 | |
63fbf586 TB |
933 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
934 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
935 | { | |
936 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 937 | return false; |
63fbf586 | 938 | } |
c62c6622 | 939 | |
d3a9eea2 TB |
940 | if (to->rank == 0 && from->rank > 0) |
941 | { | |
942 | to->rank = from->rank; | |
943 | to->type = from->type; | |
944 | to->cray_pointee = from->cray_pointee; | |
945 | to->cp_was_assumed = from->cp_was_assumed; | |
946 | ||
947 | for (i = 0; i < to->corank; i++) | |
948 | { | |
93d1ab50 SK |
949 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
950 | cleans up elsewhere. */ | |
951 | j = from->rank + i; | |
952 | if (j >= GFC_MAX_DIMENSIONS) | |
953 | break; | |
954 | ||
955 | to->lower[j] = to->lower[i]; | |
956 | to->upper[j] = to->upper[i]; | |
d3a9eea2 TB |
957 | } |
958 | for (i = 0; i < from->rank; i++) | |
959 | { | |
960 | if (copy) | |
961 | { | |
962 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
963 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
964 | } | |
965 | else | |
966 | { | |
967 | to->lower[i] = from->lower[i]; | |
968 | to->upper[i] = from->upper[i]; | |
969 | } | |
970 | } | |
971 | } | |
972 | else if (to->corank == 0 && from->corank > 0) | |
973 | { | |
974 | to->corank = from->corank; | |
975 | to->cotype = from->cotype; | |
976 | ||
977 | for (i = 0; i < from->corank; i++) | |
978 | { | |
93d1ab50 SK |
979 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
980 | cleans up elsewhere. */ | |
981 | j = to->rank + i; | |
982 | if (j >= GFC_MAX_DIMENSIONS) | |
983 | break; | |
984 | ||
d3a9eea2 TB |
985 | if (copy) |
986 | { | |
93d1ab50 SK |
987 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
988 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
d3a9eea2 TB |
989 | } |
990 | else | |
991 | { | |
93d1ab50 SK |
992 | to->lower[j] = from->lower[i]; |
993 | to->upper[j] = from->upper[i]; | |
d3a9eea2 TB |
994 | } |
995 | } | |
996 | } | |
63fbf586 | 997 | |
299ab1b2 | 998 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
93d1ab50 SK |
999 | { |
1000 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
1001 | "allowed dimensions of %d", | |
1002 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
1003 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
1004 | return false; | |
1005 | } | |
524af0d6 | 1006 | return true; |
d3a9eea2 TB |
1007 | } |
1008 | ||
1009 | ||
6de9cd9a DN |
1010 | /* Match an intent specification. Since this can only happen after an |
1011 | INTENT word, a legal intent-spec must follow. */ | |
1012 | ||
1013 | static sym_intent | |
1014 | match_intent_spec (void) | |
1015 | { | |
1016 | ||
1017 | if (gfc_match (" ( in out )") == MATCH_YES) | |
1018 | return INTENT_INOUT; | |
1019 | if (gfc_match (" ( in )") == MATCH_YES) | |
1020 | return INTENT_IN; | |
1021 | if (gfc_match (" ( out )") == MATCH_YES) | |
1022 | return INTENT_OUT; | |
1023 | ||
1024 | gfc_error ("Bad INTENT specification at %C"); | |
1025 | return INTENT_UNKNOWN; | |
1026 | } | |
1027 | ||
1028 | ||
1029 | /* Matches a character length specification, which is either a | |
e69afb29 | 1030 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
1031 | |
1032 | static match | |
e69afb29 | 1033 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 1034 | { |
cba28dad JD |
1035 | match m; |
1036 | ||
e69afb29 SK |
1037 | *expr = NULL; |
1038 | *deferred = false; | |
1039 | ||
6de9cd9a | 1040 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
1041 | return MATCH_YES; |
1042 | ||
1043 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 1044 | { |
98a819ea | 1045 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
1046 | return MATCH_ERROR; |
1047 | ||
1048 | *deferred = true; | |
1049 | ||
6de9cd9a DN |
1050 | return MATCH_YES; |
1051 | } | |
1052 | ||
cba28dad | 1053 | m = gfc_match_expr (expr); |
f37e928c | 1054 | |
98a819ea SK |
1055 | if (m == MATCH_NO || m == MATCH_ERROR) |
1056 | return m; | |
1057 | ||
1058 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
1059 | return MATCH_ERROR; |
1060 | ||
98a819ea | 1061 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 1062 | { |
8d48826b SK |
1063 | if ((*expr)->ts.type == BT_INTEGER |
1064 | || ((*expr)->ts.type == BT_UNKNOWN | |
1065 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
1066 | return MATCH_YES; | |
1067 | ||
1068 | goto syntax; | |
1069 | } | |
1070 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
1071 | { | |
1072 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
1073 | processor dependent and its value is greater than or equal to zero. | |
1074 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
1075 | to a negative value, the length of character entities declared | |
1076 | is zero. */ | |
1077 | ||
1078 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 1079 | { |
8d48826b SK |
1080 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
1081 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 1082 | } |
8d48826b SK |
1083 | else |
1084 | goto syntax; | |
cba28dad | 1085 | } |
8d48826b SK |
1086 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1087 | goto syntax; | |
1088 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1089 | { | |
fb42421e | 1090 | bool t; |
8d48826b SK |
1091 | gfc_expr *e; |
1092 | ||
1093 | e = gfc_copy_expr (*expr); | |
1094 | ||
1095 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1096 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
1097 | if (e->ref && e->ref->type == REF_ARRAY |
1098 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
1099 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1100 | goto syntax; | |
1101 | ||
fb42421e SK |
1102 | t = gfc_reduce_init_expr (e); |
1103 | ||
8d987deb SK |
1104 | if (!t && e->ts.type == BT_UNKNOWN |
1105 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
1106 | && (flag_implicit_none |
1107 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 1108 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
1109 | { |
1110 | gfc_free_expr (e); | |
1111 | goto syntax; | |
1112 | } | |
98a819ea | 1113 | |
54b96a2d | 1114 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 1115 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
1116 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1117 | { | |
1118 | gfc_free_expr (e); | |
1119 | goto syntax; | |
1120 | } | |
1121 | ||
1122 | gfc_free_expr (e); | |
1123 | } | |
98a819ea | 1124 | |
cba28dad JD |
1125 | return m; |
1126 | ||
1127 | syntax: | |
8d48826b | 1128 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 1129 | return MATCH_ERROR; |
6de9cd9a DN |
1130 | } |
1131 | ||
1132 | ||
1133 | /* A character length is a '*' followed by a literal integer or a | |
1134 | char_len_param_value in parenthesis. */ | |
1135 | ||
1136 | static match | |
62732c30 | 1137 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 1138 | { |
5cf54585 | 1139 | int length; |
6de9cd9a DN |
1140 | match m; |
1141 | ||
f5acf0f2 | 1142 | *deferred = false; |
6de9cd9a DN |
1143 | m = gfc_match_char ('*'); |
1144 | if (m != MATCH_YES) | |
1145 | return m; | |
1146 | ||
5cf54585 | 1147 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1148 | if (m == MATCH_ERROR) |
1149 | return m; | |
1150 | ||
1151 | if (m == MATCH_YES) | |
1152 | { | |
62732c30 | 1153 | if (obsolescent_check |
524af0d6 | 1154 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1155 | return MATCH_ERROR; |
f622221a | 1156 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1157 | return m; |
1158 | } | |
1159 | ||
1160 | if (gfc_match_char ('(') == MATCH_NO) | |
1161 | goto syntax; | |
1162 | ||
e69afb29 | 1163 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1164 | if (m != MATCH_YES && gfc_matching_function) |
1165 | { | |
1166 | gfc_undo_symbols (); | |
1167 | m = MATCH_YES; | |
1168 | } | |
1169 | ||
6de9cd9a DN |
1170 | if (m == MATCH_ERROR) |
1171 | return m; | |
1172 | if (m == MATCH_NO) | |
1173 | goto syntax; | |
1174 | ||
1175 | if (gfc_match_char (')') == MATCH_NO) | |
1176 | { | |
1177 | gfc_free_expr (*expr); | |
1178 | *expr = NULL; | |
1179 | goto syntax; | |
1180 | } | |
1181 | ||
1182 | return MATCH_YES; | |
1183 | ||
1184 | syntax: | |
1185 | gfc_error ("Syntax error in character length specification at %C"); | |
1186 | return MATCH_ERROR; | |
1187 | } | |
1188 | ||
1189 | ||
9e35b386 EE |
1190 | /* Special subroutine for finding a symbol. Check if the name is found |
1191 | in the current name space. If not, and we're compiling a function or | |
1192 | subroutine and the parent compilation unit is an interface, then check | |
1193 | to see if the name we've been given is the name of the interface | |
1194 | (located in another namespace). */ | |
6de9cd9a DN |
1195 | |
1196 | static int | |
08a6b8e0 | 1197 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1198 | { |
1199 | gfc_state_data *s; | |
08a6b8e0 | 1200 | gfc_symtree *st; |
9e35b386 | 1201 | int i; |
6de9cd9a | 1202 | |
08a6b8e0 | 1203 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1204 | if (i == 0) |
08a6b8e0 TB |
1205 | { |
1206 | *result = st ? st->n.sym : NULL; | |
1207 | goto end; | |
1208 | } | |
d51347f9 | 1209 | |
6de9cd9a DN |
1210 | if (gfc_current_state () != COMP_SUBROUTINE |
1211 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1212 | goto end; |
6de9cd9a DN |
1213 | |
1214 | s = gfc_state_stack->previous; | |
1215 | if (s == NULL) | |
9e35b386 | 1216 | goto end; |
6de9cd9a DN |
1217 | |
1218 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1219 | goto end; |
6de9cd9a | 1220 | if (s->sym == NULL) |
66e4ab31 | 1221 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1222 | |
1223 | if (strcmp (name, s->sym->name) == 0) | |
1224 | { | |
1225 | *result = s->sym; | |
1226 | return 0; | |
1227 | } | |
1228 | ||
9e35b386 EE |
1229 | end: |
1230 | return i; | |
6de9cd9a DN |
1231 | } |
1232 | ||
1233 | ||
1234 | /* Special subroutine for getting a symbol node associated with a | |
1235 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1236 | symbol is created in the parent using with symtree node in the | |
1237 | child unit pointing to the symbol. If the current namespace has no | |
1238 | parent, then the symbol is just created in the current unit. */ | |
1239 | ||
1240 | static int | |
636dff67 | 1241 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1242 | { |
1243 | gfc_symtree *st; | |
1244 | gfc_symbol *sym; | |
a7ca4d8d | 1245 | int rc = 0; |
6de9cd9a | 1246 | |
1a492601 PT |
1247 | /* Module functions have to be left in their own namespace because |
1248 | they have potentially (almost certainly!) already been referenced. | |
1249 | In this sense, they are rather like external functions. This is | |
1250 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1251 | space is set to point to the master function, so that the fake | |
1252 | result mechanism can work. */ | |
1253 | if (module_fcn_entry) | |
6c12686b PT |
1254 | { |
1255 | /* Present if entry is declared to be a module procedure. */ | |
1256 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1257 | |
6c12686b PT |
1258 | if (*result == NULL) |
1259 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1260 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1261 | && (*result)->ts.type == BT_UNKNOWN |
1262 | && sym->attr.flavor == FL_UNKNOWN) | |
1263 | /* Pick up the typespec for the entry, if declared in the function | |
1264 | body. Note that this symbol is FL_UNKNOWN because it will | |
1265 | only have appeared in a type declaration. The local symtree | |
1266 | is set to point to the module symbol and a unique symtree | |
1267 | to the local version. This latter ensures a correct clearing | |
1268 | of the symbols. */ | |
2e32a71e PT |
1269 | { |
1270 | /* If the ENTRY proceeds its specification, we need to ensure | |
1271 | that this does not raise a "has no IMPLICIT type" error. */ | |
1272 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1273 | sym->attr.untyped = 1; |
2e32a71e | 1274 | |
0e5a218b | 1275 | (*result)->ts = sym->ts; |
2e32a71e PT |
1276 | |
1277 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1278 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1279 | can be applied. */ |
1280 | (*result)->ns = gfc_current_ns; | |
1281 | ||
1282 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1283 | st->n.sym = *result; | |
1284 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1285 | sym->refs++; |
2e32a71e PT |
1286 | st->n.sym = sym; |
1287 | } | |
6c12686b | 1288 | } |
68ea355b PT |
1289 | else |
1290 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1291 | |
a7ca4d8d PT |
1292 | if (rc) |
1293 | return rc; | |
1294 | ||
68ea355b | 1295 | sym = *result; |
79124116 PT |
1296 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1297 | return rc; | |
6de9cd9a | 1298 | |
96c8b253 | 1299 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4668d6f9 PT |
1300 | { |
1301 | /* Create a partially populated interface symbol to carry the | |
1302 | characteristics of the procedure and the result. */ | |
c064374d | 1303 | sym->tlink = gfc_new_symbol (name, sym->ns); |
96c8b253 | 1304 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
c064374d | 1305 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1306 | if (sym->attr.dimension) |
c064374d | 1307 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1308 | |
1309 | /* Ideally, at this point, a copy would be made of the formal | |
1310 | arguments and their namespace. However, this does not appear | |
1311 | to be necessary, albeit at the expense of not being able to | |
1312 | use gfc_compare_interfaces directly. */ | |
1313 | ||
1314 | if (sym->result && sym->result != sym) | |
1315 | { | |
c064374d | 1316 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1317 | sym->result = NULL; |
1318 | } | |
1319 | else if (sym->result) | |
1320 | { | |
c064374d | 1321 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1322 | } |
1323 | } | |
1324 | else if (sym && !sym->gfc_new | |
1325 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1326 | { |
cda7004b PT |
1327 | /* Trap another encompassed procedure with the same name. All |
1328 | these conditions are necessary to avoid picking up an entry | |
1329 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1330 | this is handled using gsymbols to register unique, globally |
cda7004b | 1331 | accessible names. */ |
68ea355b | 1332 | if (sym->attr.flavor != 0 |
636dff67 | 1333 | && sym->attr.proc != 0 |
64300da7 | 1334 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
636dff67 | 1335 | && sym->attr.if_source != IFSRC_UNKNOWN) |
b4439561 TB |
1336 | { |
1337 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1338 | name, &sym->declared_at); | |
1339 | return true; | |
1340 | } | |
64300da7 SK |
1341 | if (sym->attr.flavor != 0 |
1342 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
b4439561 TB |
1343 | { |
1344 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1345 | name, &sym->declared_at); | |
1346 | return true; | |
1347 | } | |
64300da7 | 1348 | |
81ea7c11 SK |
1349 | if (sym->attr.external && sym->attr.procedure |
1350 | && gfc_current_state () == COMP_CONTAINS) | |
b4439561 TB |
1351 | { |
1352 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1353 | "procedure defined at %L", | |
1354 | name, &sym->declared_at); | |
1355 | return true; | |
1356 | } | |
81ea7c11 | 1357 | |
fd3e70af JD |
1358 | /* Trap a procedure with a name the same as interface in the |
1359 | encompassing scope. */ | |
1360 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1361 | && (sym->attr.subroutine || sym->attr.function) |
1362 | && !sym->attr.mod_proc) | |
b4439561 TB |
1363 | { |
1364 | gfc_error_now ("Name %qs at %C is already defined" | |
1365 | " as a generic interface at %L", | |
1366 | name, &sym->declared_at); | |
1367 | return true; | |
1368 | } | |
fd3e70af | 1369 | |
68ea355b | 1370 | /* Trap declarations of attributes in encompassing scope. The |
1c3925e3 SK |
1371 | signature for this is that ts.kind is nonzero for no-CLASS |
1372 | entity. For a CLASS entity, ts.kind is zero. */ | |
1373 | if ((sym->ts.kind != 0 || sym->ts.type == BT_CLASS) | |
636dff67 SK |
1374 | && !sym->attr.implicit_type |
1375 | && sym->attr.proc == 0 | |
1376 | && gfc_current_ns->parent != NULL | |
1377 | && sym->attr.access == 0 | |
1378 | && !module_fcn_entry) | |
b4439561 TB |
1379 | { |
1380 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
96c8b253 | 1381 | "from a previous declaration", name); |
b4439561 TB |
1382 | return true; |
1383 | } | |
96c8b253 SK |
1384 | } |
1385 | ||
b74fa126 SK |
1386 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1387 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1388 | body that is declared in the scoping unit of a module or submodule. */ | |
1389 | if (sym->attr.external | |
1390 | && (sym->attr.subroutine || sym->attr.function) | |
1391 | && sym->attr.if_source == IFSRC_IFBODY | |
1392 | && !current_attr.module_procedure | |
1393 | && sym->attr.proc == PROC_MODULE | |
1394 | && gfc_state_stack->state == COMP_CONTAINS) | |
b4439561 TB |
1395 | { |
1396 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1397 | "clashes with internal procedure defined at %C", | |
1398 | name, &sym->declared_at); | |
1399 | return true; | |
1400 | } | |
b74fa126 SK |
1401 | |
1402 | if (sym && !sym->gfc_new | |
1403 | && sym->attr.flavor != FL_UNKNOWN | |
1404 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1405 | && gfc_state_stack->state == COMP_CONTAINS | |
1406 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
b4439561 TB |
1407 | { |
1408 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1409 | name, &sym->declared_at); | |
1410 | return true; | |
1411 | } | |
68ea355b PT |
1412 | |
1413 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1414 | return rc; | |
6de9cd9a | 1415 | |
1a492601 PT |
1416 | /* Module function entries will already have a symtree in |
1417 | the current namespace but will need one at module level. */ | |
1418 | if (module_fcn_entry) | |
6c12686b PT |
1419 | { |
1420 | /* Present if entry is declared to be a module procedure. */ | |
1421 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1422 | if (st == NULL) | |
1423 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1424 | } | |
1a492601 PT |
1425 | else |
1426 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1427 | |
6de9cd9a DN |
1428 | st->n.sym = sym; |
1429 | sym->refs++; | |
1430 | ||
66e4ab31 | 1431 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1432 | |
1a492601 | 1433 | if (((sym->ns->proc_name != NULL |
96c8b253 SK |
1434 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1435 | && sym->attr.proc != PROC_MODULE) | |
1436 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1437 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
6de9cd9a DN |
1438 | rc = 2; |
1439 | ||
1440 | return rc; | |
1441 | } | |
1442 | ||
1443 | ||
a8b3b0b6 CR |
1444 | /* Verify that the given symbol representing a parameter is C |
1445 | interoperable, by checking to see if it was marked as such after | |
1446 | its declaration. If the given symbol is not interoperable, a | |
1447 | warning is reported, thus removing the need to return the status to | |
1448 | the calling function. The standard does not require the user use | |
1449 | one of the iso_c_binding named constants to declare an | |
1450 | interoperable parameter, but we can't be sure if the param is C | |
1451 | interop or not if the user doesn't. For example, integer(4) may be | |
1452 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1453 | a number of the C types, which causes a problem because the | |
1454 | compiler can't know which one. This code is almost certainly not | |
1455 | portable, and the user will get what they deserve if the C type | |
1456 | across platforms isn't always interoperable with integer(4). If | |
1457 | the user had used something like integer(c_int) or integer(c_long), | |
1458 | the compiler could have automatically handled the varying sizes | |
1459 | across platforms. */ | |
1460 | ||
524af0d6 | 1461 | bool |
00820a2a | 1462 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1463 | { |
1464 | int is_c_interop = 0; | |
524af0d6 | 1465 | bool retval = true; |
a8b3b0b6 CR |
1466 | |
1467 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1468 | Don't repeat the checks here. */ | |
1469 | if (sym->attr.implicit_type) | |
524af0d6 | 1470 | return true; |
f5acf0f2 | 1471 | |
a8b3b0b6 CR |
1472 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1473 | they're interoperable if they're BIND(C) and their params are all | |
1474 | interoperable. */ | |
1475 | if (sym->attr.flavor == FL_PROCEDURE) | |
1476 | { | |
1477 | if (sym->attr.is_bind_c == 0) | |
1478 | { | |
4daa149b TB |
1479 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1480 | "attribute to be C interoperable", sym->name, | |
1481 | &(sym->declared_at)); | |
524af0d6 | 1482 | return false; |
a8b3b0b6 CR |
1483 | } |
1484 | else | |
1485 | { | |
1486 | if (sym->attr.is_c_interop == 1) | |
1487 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1488 | return true; |
a8b3b0b6 CR |
1489 | else |
1490 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1491 | sym->common_block); | |
1492 | } | |
1493 | } | |
f5acf0f2 | 1494 | |
a8b3b0b6 CR |
1495 | /* See if we've stored a reference to a procedure that owns sym. */ |
1496 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1497 | { | |
1498 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1499 | { | |
524af0d6 | 1500 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1501 | |
1502 | if (is_c_interop != 1) | |
1503 | { | |
1504 | /* Make personalized messages to give better feedback. */ | |
1505 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1506 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1507 | "BIND(C) procedure %qs but is not C interoperable " | |
1508 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1509 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1510 | sym->ns->proc_name->name, |
bc21d315 | 1511 | sym->ts.u.derived->name); |
00820a2a | 1512 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1513 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1514 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1515 | "because it is polymorphic", |
1516 | sym->name, &(sym->declared_at), | |
1517 | sym->ns->proc_name->name); | |
4daa149b | 1518 | else if (warn_c_binding_type) |
48749dbc MLI |
1519 | gfc_warning (OPT_Wc_binding_type, |
1520 | "Variable %qs at %L is a dummy argument of the " | |
1521 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1522 | "interoperable", |
1523 | sym->name, &(sym->declared_at), | |
1524 | sym->ns->proc_name->name); | |
1525 | } | |
aa5e22f0 CR |
1526 | |
1527 | /* Character strings are only C interoperable if they have a | |
1528 | length of 1. */ | |
0a524296 | 1529 | if (sym->ts.type == BT_CHARACTER && !sym->attr.dimension) |
aa5e22f0 | 1530 | { |
bc21d315 | 1531 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1532 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1533 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1534 | { | |
0a524296 PT |
1535 | gfc_error ("Character argument %qs at %L " |
1536 | "must be length 1 because " | |
1537 | "procedure %qs is BIND(C)", | |
1538 | sym->name, &sym->declared_at, | |
1539 | sym->ns->proc_name->name); | |
1540 | retval = false; | |
aa5e22f0 CR |
1541 | } |
1542 | } | |
1543 | ||
a8b3b0b6 CR |
1544 | /* We have to make sure that any param to a bind(c) routine does |
1545 | not have the allocatable, pointer, or optional attributes, | |
1546 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1547 | if (sym->attr.allocatable == 1 |
286f737c | 1548 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1549 | "ALLOCATABLE attribute in procedure %qs " |
60f6ca95 TB |
1550 | "with BIND(C)", sym->name, |
1551 | &(sym->declared_at), | |
1552 | sym->ns->proc_name->name)) | |
1553 | retval = false; | |
1554 | ||
1555 | if (sym->attr.pointer == 1 | |
286f737c | 1556 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1557 | "POINTER attribute in procedure %qs " |
60f6ca95 TB |
1558 | "with BIND(C)", sym->name, |
1559 | &(sym->declared_at), | |
1560 | sym->ns->proc_name->name)) | |
1561 | retval = false; | |
1562 | ||
1563 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1564 | { |
c4100eae MLI |
1565 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1566 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1567 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1568 | sym->ns->proc_name->name); |
524af0d6 | 1569 | retval = false; |
a8b3b0b6 CR |
1570 | } |
1571 | ||
2e8d9212 | 1572 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1573 | { |
c4100eae MLI |
1574 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1575 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1576 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1577 | sym->ns->proc_name->name); |
524af0d6 | 1578 | retval = false; |
a8b3b0b6 | 1579 | } |
2e8d9212 | 1580 | else if (sym->attr.optional == 1 |
286f737c | 1581 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
524af0d6 | 1582 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1583 | "procedure %qs which is BIND(C)", |
1584 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1585 | sym->ns->proc_name->name)) |
1586 | retval = false; | |
a8b3b0b6 CR |
1587 | |
1588 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1589 | either assumed size or explicit shape. Deferred shape is already |
1590 | covered by the pointer/allocatable attribute. */ | |
1591 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
286f737c | 1592 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
524af0d6 | 1593 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1594 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1595 | &(sym->declared_at), |
1596 | sym->ns->proc_name->name, | |
524af0d6 JB |
1597 | &(sym->ns->proc_name->declared_at))) |
1598 | retval = false; | |
a8b3b0b6 CR |
1599 | } |
1600 | } | |
1601 | ||
1602 | return retval; | |
1603 | } | |
1604 | ||
1605 | ||
cf2b3c22 | 1606 | |
a8b3b0b6 | 1607 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1608 | |
524af0d6 | 1609 | static bool |
e69afb29 | 1610 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1611 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1612 | { |
1613 | symbol_attribute attr; | |
1614 | gfc_symbol *sym; | |
1e6025b6 | 1615 | int upper; |
bedee914 PT |
1616 | gfc_symtree *st; |
1617 | ||
1618 | /* Symbols in a submodule are host associated from the parent module or | |
1619 | submodules. Therefore, they can be overridden by declarations in the | |
1620 | submodule scope. Deal with this by attaching the existing symbol to | |
1621 | a new symtree and recycling the old symtree with a new symbol... */ | |
1622 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1623 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1624 | && st->n.sym != NULL | |
1625 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1626 | { | |
1627 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1628 | s->n.sym = st->n.sym; | |
1629 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1630 | |
bedee914 PT |
1631 | |
1632 | st->n.sym = sym; | |
1633 | sym->refs++; | |
1634 | gfc_set_sym_referenced (sym); | |
1635 | } | |
1636 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1637 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1638 | return false; |
6de9cd9a | 1639 | |
1e6025b6 TK |
1640 | /* Check if the name has already been defined as a type. The |
1641 | first letter of the symtree will be in upper case then. Of | |
1642 | course, this is only necessary if the upper case letter is | |
1643 | actually different. */ | |
1644 | ||
1645 | upper = TOUPPER(name[0]); | |
1646 | if (upper != name[0]) | |
1647 | { | |
1648 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1649 | gfc_symtree *st; | |
1e6025b6 | 1650 | |
025d57f0 MS |
1651 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1652 | strcpy (u_name, name); | |
1e6025b6 TK |
1653 | u_name[0] = upper; |
1654 | ||
1655 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1656 | ||
f6288c24 FR |
1657 | /* STRUCTURE types can alias symbol names */ |
1658 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1659 | { |
1660 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1661 | &st->n.sym->declared_at); | |
1662 | return false; | |
1663 | } | |
1664 | } | |
1665 | ||
66e4ab31 | 1666 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1667 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1668 | && (sym->attr.implicit_type == 0 |
1669 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1670 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1671 | return false; | |
6de9cd9a DN |
1672 | |
1673 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1674 | { |
1675 | sym->ts.u.cl = cl; | |
1676 | sym->ts.deferred = cl_deferred; | |
1677 | } | |
6de9cd9a DN |
1678 | |
1679 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1680 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1681 | return false; | |
6de9cd9a DN |
1682 | *as = NULL; |
1683 | ||
1684 | /* Add attribute to symbol. The copy is so that we can reset the | |
1685 | dimension attribute. */ | |
1686 | attr = current_attr; | |
1687 | attr.dimension = 0; | |
be59db2d | 1688 | attr.codimension = 0; |
6de9cd9a | 1689 | |
524af0d6 JB |
1690 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1691 | return false; | |
6de9cd9a | 1692 | |
a8b3b0b6 CR |
1693 | /* Finish any work that may need to be done for the binding label, |
1694 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1695 | is made, and before the symbol name (for data decls), so the | |
1696 | current_ts is holding the binding label, or nothing if the | |
1697 | name= attr wasn't given. Therefore, test here if we're dealing | |
1698 | with a bind(c) and make sure the binding label is set correctly. */ | |
1699 | if (sym->attr.is_bind_c == 1) | |
1700 | { | |
62603fae | 1701 | if (!sym->binding_label) |
a8b3b0b6 | 1702 | { |
ad4a2f64 TB |
1703 | /* Set the binding label and verify that if a NAME= was specified |
1704 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1705 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1706 | num_idents_on_line)) |
1707 | return false; | |
a8b3b0b6 CR |
1708 | } |
1709 | } | |
1710 | ||
1711 | /* See if we know we're in a common block, and if it's a bind(c) | |
1712 | common then we need to make sure we're an interoperable type. */ | |
1713 | if (sym->attr.in_common == 1) | |
1714 | { | |
1715 | /* Test the common block object. */ | |
1716 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1717 | && sym->ts.is_c_interop != 1) | |
1718 | { | |
4daa149b | 1719 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1720 | "must be declared with a C interoperable " |
4daa149b | 1721 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1722 | sym->name, sym->common_block->name, |
1723 | sym->common_block->name); | |
1724 | gfc_clear_error (); | |
1725 | } | |
1726 | } | |
1727 | ||
9a3db5a3 PT |
1728 | sym->attr.implied_index = 0; |
1729 | ||
5bab4c96 PT |
1730 | /* Use the parameter expressions for a parameterized derived type. */ |
1731 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1732 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1733 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1734 | ||
528622fd | 1735 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1736 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1737 | |
524af0d6 | 1738 | return true; |
6de9cd9a DN |
1739 | } |
1740 | ||
636dff67 | 1741 | |
df7cc9b5 | 1742 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1743 | truncated. If we're inside an array constructor without a typespec, we |
1744 | additionally check that all elements have the same length; check_len -1 | |
1745 | means no checking. */ | |
df7cc9b5 FW |
1746 | |
1747 | void | |
6b271a2e JB |
1748 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1749 | gfc_charlen_t check_len) | |
df7cc9b5 | 1750 | { |
00660189 | 1751 | gfc_char_t *s; |
6b271a2e | 1752 | gfc_charlen_t slen; |
df7cc9b5 | 1753 | |
834e9dbb SK |
1754 | if (expr->ts.type != BT_CHARACTER) |
1755 | return; | |
63af1586 | 1756 | |
b441ae1d SK |
1757 | if (expr->expr_type != EXPR_CONSTANT) |
1758 | { | |
1759 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1760 | return; | |
1761 | } | |
df7cc9b5 FW |
1762 | |
1763 | slen = expr->value.character.length; | |
1764 | if (len != slen) | |
1765 | { | |
00660189 FXC |
1766 | s = gfc_get_wide_string (len + 1); |
1767 | memcpy (s, expr->value.character.string, | |
1768 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1769 | if (len > slen) |
00660189 | 1770 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1771 | |
a96c39ea | 1772 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1773 | gfc_warning_now (OPT_Wcharacter_truncation, |
1774 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1775 | "(%ld/%ld)", &expr->where, |
1776 | (long) slen, (long) len); | |
2220652d PT |
1777 | |
1778 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1779 | initializers. */ | |
d2848082 DK |
1780 | if (check_len != -1 && slen != check_len |
1781 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1782 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1783 | "at %L must have the same length (%ld/%ld)", |
1784 | &expr->where, (long) slen, | |
1785 | (long) check_len); | |
2220652d | 1786 | |
150675a8 | 1787 | s[len] = '\0'; |
cede9502 | 1788 | free (expr->value.character.string); |
df7cc9b5 FW |
1789 | expr->value.character.string = s; |
1790 | expr->value.character.length = len; | |
e6ca33ba HA |
1791 | /* If explicit representation was given, clear it |
1792 | as it is no longer needed after padding. */ | |
1793 | if (expr->representation.length) | |
1794 | { | |
1795 | expr->representation.length = 0; | |
1796 | free (expr->representation.string); | |
1797 | expr->representation.string = NULL; | |
1798 | } | |
df7cc9b5 FW |
1799 | } |
1800 | } | |
6de9cd9a | 1801 | |
25d8f0a2 | 1802 | |
d51347f9 | 1803 | /* Function to create and update the enumerator history |
25d8f0a2 | 1804 | using the information passed as arguments. |
d51347f9 TB |
1805 | Pointer "max_enum" is also updated, to point to |
1806 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1807 | |
1808 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1809 | INIT points to its enumerator value. */ |
25d8f0a2 | 1810 | |
d51347f9 | 1811 | static void |
636dff67 | 1812 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1813 | { |
1814 | enumerator_history *new_enum_history; | |
1815 | gcc_assert (sym != NULL && init != NULL); | |
1816 | ||
ece3f663 | 1817 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1818 | |
1819 | new_enum_history->sym = sym; | |
1820 | new_enum_history->initializer = init; | |
1821 | new_enum_history->next = NULL; | |
1822 | ||
1823 | if (enum_history == NULL) | |
1824 | { | |
1825 | enum_history = new_enum_history; | |
1826 | max_enum = enum_history; | |
1827 | } | |
1828 | else | |
1829 | { | |
1830 | new_enum_history->next = enum_history; | |
1831 | enum_history = new_enum_history; | |
1832 | ||
d51347f9 | 1833 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1834 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1835 | max_enum = new_enum_history; |
25d8f0a2 TS |
1836 | } |
1837 | } | |
1838 | ||
1839 | ||
d51347f9 | 1840 | /* Function to free enum kind history. */ |
25d8f0a2 | 1841 | |
d51347f9 | 1842 | void |
636dff67 | 1843 | gfc_free_enum_history (void) |
25d8f0a2 | 1844 | { |
d51347f9 TB |
1845 | enumerator_history *current = enum_history; |
1846 | enumerator_history *next; | |
25d8f0a2 TS |
1847 | |
1848 | while (current != NULL) | |
1849 | { | |
1850 | next = current->next; | |
cede9502 | 1851 | free (current); |
25d8f0a2 TS |
1852 | current = next; |
1853 | } | |
1854 | max_enum = NULL; | |
1855 | enum_history = NULL; | |
1856 | } | |
1857 | ||
1858 | ||
6de9cd9a DN |
1859 | /* Function called by variable_decl() that adds an initialization |
1860 | expression to a symbol. */ | |
1861 | ||
524af0d6 | 1862 | static bool |
66e4ab31 | 1863 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1864 | { |
1865 | symbol_attribute attr; | |
1866 | gfc_symbol *sym; | |
1867 | gfc_expr *init; | |
1868 | ||
1869 | init = *initp; | |
08a6b8e0 | 1870 | if (find_special (name, &sym, false)) |
524af0d6 | 1871 | return false; |
6de9cd9a DN |
1872 | |
1873 | attr = sym->attr; | |
1874 | ||
1875 | /* If this symbol is confirming an implicit parameter type, | |
1876 | then an initialization expression is not allowed. */ | |
1877 | if (attr.flavor == FL_PARAMETER | |
1878 | && sym->value != NULL | |
1879 | && *initp != NULL) | |
1880 | { | |
c4100eae | 1881 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1882 | sym->name); |
524af0d6 | 1883 | return false; |
6de9cd9a DN |
1884 | } |
1885 | ||
1886 | if (init == NULL) | |
1887 | { | |
1888 | /* An initializer is required for PARAMETER declarations. */ | |
1889 | if (attr.flavor == FL_PARAMETER) | |
1890 | { | |
1891 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1892 | return false; |
6de9cd9a DN |
1893 | } |
1894 | } | |
1895 | else | |
1896 | { | |
1897 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1898 | initializer. */ |
6de9cd9a DN |
1899 | if (sym->attr.data) |
1900 | { | |
c4100eae | 1901 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1902 | "appears in a DATA statement", sym->name); |
524af0d6 | 1903 | return false; |
6de9cd9a DN |
1904 | } |
1905 | ||
75d17889 | 1906 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1907 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1908 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1909 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1910 | && !sym->attr.proc_pointer |
524af0d6 JB |
1911 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1912 | return false; | |
6de9cd9a | 1913 | |
bc21d315 | 1914 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1915 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1916 | { |
1917 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1918 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1919 | return false; | |
51b128a0 | 1920 | |
bc21d315 | 1921 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1922 | { |
f622221a | 1923 | gfc_charlen_t clen; |
66e4ab31 SK |
1924 | /* If there are multiple CHARACTER variables declared on the |
1925 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1926 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1927 | |
a99288e5 PT |
1928 | if (sym->attr.flavor == FL_PARAMETER) |
1929 | { | |
1930 | if (init->expr_type == EXPR_CONSTANT) | |
1931 | { | |
1932 | clen = init->value.character.length; | |
b7e75771 | 1933 | sym->ts.u.cl->length |
f622221a | 1934 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1935 | NULL, clen); |
a99288e5 PT |
1936 | } |
1937 | else if (init->expr_type == EXPR_ARRAY) | |
1938 | { | |
c004a341 | 1939 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1940 | { |
1941 | const gfc_expr *length = init->ts.u.cl->length; | |
1942 | if (length->expr_type != EXPR_CONSTANT) | |
1943 | { | |
1944 | gfc_error ("Cannot initialize parameter array " | |
1945 | "at %L " | |
1946 | "with variable length elements", | |
1947 | &sym->declared_at); | |
1948 | return false; | |
1949 | } | |
1950 | clen = mpz_get_si (length->value.integer); | |
1951 | } | |
dc0f176a SK |
1952 | else if (init->value.constructor) |
1953 | { | |
1954 | gfc_constructor *c; | |
70112e2a | 1955 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1956 | clen = c->expr->value.character.length; |
1957 | } | |
1958 | else | |
1959 | gcc_unreachable (); | |
b7e75771 | 1960 | sym->ts.u.cl->length |
f622221a | 1961 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1962 | NULL, clen); |
a99288e5 | 1963 | } |
bc21d315 JW |
1964 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1965 | sym->ts.u.cl->length = | |
bc1efcb7 | 1966 | gfc_copy_expr (init->ts.u.cl->length); |
a99288e5 | 1967 | } |
df7cc9b5 FW |
1968 | } |
1969 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1970 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1971 | { |
d30ecc9c SK |
1972 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1973 | return false; | |
1974 | ||
aeb8c028 JJ |
1975 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1976 | false); | |
1977 | /* resolve_charlen will complain later on if the length | |
1978 | is too large. Just skeep the initialization in that case. */ | |
1979 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1980 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1981 | { |
aeb8c028 JJ |
1982 | HOST_WIDE_INT len |
1983 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1984 | ||
1985 | if (init->expr_type == EXPR_CONSTANT) | |
1986 | gfc_set_constant_character_len (len, init, -1); | |
1987 | else if (init->expr_type == EXPR_ARRAY) | |
1988 | { | |
1989 | gfc_constructor *c; | |
b7e75771 | 1990 | |
aeb8c028 JJ |
1991 | /* Build a new charlen to prevent simplification from |
1992 | deleting the length before it is resolved. */ | |
1993 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1994 | init->ts.u.cl->length | |
1995 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 1996 | |
aeb8c028 JJ |
1997 | for (c = gfc_constructor_first (init->value.constructor); |
1998 | c; c = gfc_constructor_next (c)) | |
1999 | gfc_set_constant_character_len (len, c->expr, -1); | |
2000 | } | |
df7cc9b5 FW |
2001 | } |
2002 | } | |
2003 | } | |
2004 | ||
f5ca06e6 DK |
2005 | /* If sym is implied-shape, set its upper bounds from init. */ |
2006 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
2007 | && sym->as->type == AS_IMPLIED_SHAPE) | |
2008 | { | |
2009 | int dim; | |
2010 | ||
2011 | if (init->rank == 0) | |
2012 | { | |
1fe61adf | 2013 | gfc_error ("Cannot initialize implied-shape array at %L" |
f5ca06e6 | 2014 | " with scalar", &sym->declared_at); |
524af0d6 | 2015 | return false; |
f5ca06e6 | 2016 | } |
f5ca06e6 | 2017 | |
8ed5ae52 TK |
2018 | /* The shape may be NULL for EXPR_ARRAY, set it. */ |
2019 | if (init->shape == NULL) | |
2020 | { | |
2021 | gcc_assert (init->expr_type == EXPR_ARRAY); | |
2022 | init->shape = gfc_get_shape (1); | |
2023 | if (!gfc_array_size (init, &init->shape[0])) | |
2024 | gfc_internal_error ("gfc_array_size failed"); | |
2025 | } | |
f5ca06e6 DK |
2026 | |
2027 | for (dim = 0; dim < sym->as->rank; ++dim) | |
2028 | { | |
2029 | int k; | |
cdffe788 | 2030 | gfc_expr *e, *lower; |
f5acf0f2 | 2031 | |
f5ca06e6 | 2032 | lower = sym->as->lower[dim]; |
cdffe788 | 2033 | |
70112e2a | 2034 | /* If the lower bound is an array element from another |
cdffe788 SK |
2035 | parameterized array, then it is marked with EXPR_VARIABLE and |
2036 | is an initialization expression. Try to reduce it. */ | |
2037 | if (lower->expr_type == EXPR_VARIABLE) | |
2038 | gfc_reduce_init_expr (lower); | |
2039 | ||
2040 | if (lower->expr_type == EXPR_CONSTANT) | |
2041 | { | |
2042 | /* All dimensions must be without upper bound. */ | |
2043 | gcc_assert (!sym->as->upper[dim]); | |
2044 | ||
2045 | k = lower->ts.kind; | |
2046 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
2047 | mpz_add (e->value.integer, lower->value.integer, | |
2048 | init->shape[dim]); | |
2049 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
2050 | sym->as->upper[dim] = e; | |
2051 | } | |
2052 | else | |
f5ca06e6 DK |
2053 | { |
2054 | gfc_error ("Non-constant lower bound in implied-shape" | |
2055 | " declaration at %L", &lower->where); | |
524af0d6 | 2056 | return false; |
f5ca06e6 | 2057 | } |
f5ca06e6 DK |
2058 | } |
2059 | ||
2060 | sym->as->type = AS_EXPLICIT; | |
2061 | } | |
2062 | ||
a8b3b0b6 CR |
2063 | /* Need to check if the expression we initialized this |
2064 | to was one of the iso_c_binding named constants. If so, | |
2065 | and we're a parameter (constant), let it be iso_c. | |
2066 | For example: | |
2067 | integer(c_int), parameter :: my_int = c_int | |
2068 | integer(my_int) :: my_int_2 | |
2069 | If we mark my_int as iso_c (since we can see it's value | |
2070 | is equal to one of the named constants), then my_int_2 | |
2071 | will be considered C interoperable. */ | |
f6288c24 | 2072 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
2073 | { |
2074 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2075 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2076 | /* attr bits needed for module files. */ | |
2077 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2078 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2079 | if (init->ts.is_iso_c) | |
2080 | sym->ts.f90_type = init->ts.f90_type; | |
2081 | } | |
b7e75771 | 2082 | |
6de9cd9a DN |
2083 | /* Add initializer. Make sure we keep the ranks sane. */ |
2084 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
2085 | { |
2086 | mpz_t size; | |
2087 | gfc_expr *array; | |
a9b43781 PT |
2088 | int n; |
2089 | if (sym->attr.flavor == FL_PARAMETER | |
2090 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 2091 | && spec_size (sym->as, &size) |
a9b43781 PT |
2092 | && mpz_cmp_si (size, 0) > 0) |
2093 | { | |
b7e75771 JD |
2094 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2095 | &init->where); | |
a9b43781 | 2096 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
2097 | gfc_constructor_append_expr (&array->value.constructor, |
2098 | n == 0 | |
2099 | ? init | |
2100 | : gfc_copy_expr (init), | |
2101 | &init->where); | |
f5acf0f2 | 2102 | |
a9b43781 PT |
2103 | array->shape = gfc_get_shape (sym->as->rank); |
2104 | for (n = 0; n < sym->as->rank; n++) | |
2105 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2106 | ||
2107 | init = array; | |
2108 | mpz_clear (size); | |
2109 | } | |
2110 | init->rank = sym->as->rank; | |
2111 | } | |
6de9cd9a DN |
2112 | |
2113 | sym->value = init; | |
ef7236d2 DF |
2114 | if (sym->attr.save == SAVE_NONE) |
2115 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2116 | *initp = NULL; |
2117 | } | |
2118 | ||
524af0d6 | 2119 | return true; |
6de9cd9a DN |
2120 | } |
2121 | ||
2122 | ||
2123 | /* Function called by variable_decl() that adds a name to a structure | |
2124 | being built. */ | |
2125 | ||
524af0d6 | 2126 | static bool |
636dff67 SK |
2127 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2128 | gfc_array_spec **as) | |
6de9cd9a | 2129 | { |
f6288c24 | 2130 | gfc_state_data *s; |
6de9cd9a DN |
2131 | gfc_component *c; |
2132 | ||
619dd721 | 2133 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 2134 | constructing, it must have the pointer attribute. */ |
619dd721 | 2135 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 2136 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
2137 | && current_attr.pointer == 0) |
2138 | { | |
bf9f15ee PT |
2139 | if (current_attr.allocatable |
2140 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2141 | "must have the POINTER attribute")) | |
2142 | { | |
2143 | return false; | |
2144 | } | |
2145 | else if (current_attr.allocatable == 0) | |
2146 | { | |
9cbf8673 JW |
2147 | gfc_error ("Component at %C must have the POINTER attribute"); |
2148 | return false; | |
2149 | } | |
6de9cd9a | 2150 | } |
9cbf8673 JW |
2151 | |
2152 | /* F03:C437. */ | |
2153 | if (current_ts.type == BT_CLASS | |
2154 | && !(current_attr.pointer || current_attr.allocatable)) | |
2155 | { | |
2156 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2157 | "or pointer", name); | |
2158 | return false; | |
bf9f15ee | 2159 | } |
6de9cd9a | 2160 | |
636dff67 | 2161 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
2162 | { |
2163 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2164 | { | |
2165 | gfc_error ("Array component of structure at %C must have explicit " | |
2166 | "or deferred shape"); | |
524af0d6 | 2167 | return false; |
6de9cd9a DN |
2168 | } |
2169 | } | |
2170 | ||
f6288c24 FR |
2171 | /* If we are in a nested union/map definition, gfc_add_component will not |
2172 | properly find repeated components because: | |
6442a6f4 | 2173 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
2174 | and maps are implicity chained so nested components may conflict. |
2175 | (ii) Unions and maps are not linked as components of their parent | |
2176 | structures until after they are parsed. | |
2177 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2178 | we search each block directly from the parse stack until we find the top | |
2179 | level structure. */ | |
2180 | ||
2181 | s = gfc_state_stack; | |
2182 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2183 | { | |
2184 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2185 | { | |
2186 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2187 | if (c != NULL) | |
2188 | { | |
2f029c08 | 2189 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
2190 | name, &c->loc); |
2191 | return false; | |
2192 | } | |
2193 | /* Break after we've searched the entire chain. */ | |
2194 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2195 | break; | |
2196 | s = s->previous; | |
2197 | } | |
2198 | } | |
2199 | ||
524af0d6 JB |
2200 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2201 | return false; | |
6de9cd9a DN |
2202 | |
2203 | c->ts = current_ts; | |
bc21d315 JW |
2204 | if (c->ts.type == BT_CHARACTER) |
2205 | c->ts.u.cl = cl; | |
5bab4c96 PT |
2206 | |
2207 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2208 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2209 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2210 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2211 | ||
d4b7d0f0 | 2212 | c->attr = current_attr; |
6de9cd9a DN |
2213 | |
2214 | c->initializer = *init; | |
2215 | *init = NULL; | |
2216 | ||
2217 | c->as = *as; | |
2218 | if (c->as != NULL) | |
be59db2d TB |
2219 | { |
2220 | if (c->as->corank) | |
2221 | c->attr.codimension = 1; | |
2222 | if (c->as->rank) | |
2223 | c->attr.dimension = 1; | |
2224 | } | |
6de9cd9a DN |
2225 | *as = NULL; |
2226 | ||
7fc61626 | 2227 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2228 | |
6de9cd9a | 2229 | /* Check array components. */ |
d4b7d0f0 | 2230 | if (!c->attr.dimension) |
2e23972e | 2231 | goto scalar; |
6de9cd9a | 2232 | |
d4b7d0f0 | 2233 | if (c->attr.pointer) |
6de9cd9a DN |
2234 | { |
2235 | if (c->as->type != AS_DEFERRED) | |
2236 | { | |
5046aff5 PT |
2237 | gfc_error ("Pointer array component of structure at %C must have a " |
2238 | "deferred shape"); | |
a4f15a7d | 2239 | return false; |
5046aff5 PT |
2240 | } |
2241 | } | |
d4b7d0f0 | 2242 | else if (c->attr.allocatable) |
5046aff5 PT |
2243 | { |
2244 | if (c->as->type != AS_DEFERRED) | |
2245 | { | |
2246 | gfc_error ("Allocatable component of structure at %C must have a " | |
2247 | "deferred shape"); | |
a4f15a7d | 2248 | return false; |
6de9cd9a DN |
2249 | } |
2250 | } | |
2251 | else | |
2252 | { | |
2253 | if (c->as->type != AS_EXPLICIT) | |
2254 | { | |
636dff67 SK |
2255 | gfc_error ("Array component of structure at %C must have an " |
2256 | "explicit shape"); | |
a4f15a7d | 2257 | return false; |
6de9cd9a DN |
2258 | } |
2259 | } | |
2260 | ||
2e23972e JW |
2261 | scalar: |
2262 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2263 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2264 | |
5bab4c96 PT |
2265 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2266 | { | |
2267 | gfc_symbol *sym; | |
2268 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2269 | 0, &sym); | |
2270 | if (sym == NULL) | |
2271 | { | |
2272 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2273 | "in the type parameter name list at %L", | |
2274 | c->name, &gfc_current_block ()->declared_at); | |
2275 | return false; | |
2276 | } | |
2277 | sym->ts = c->ts; | |
2278 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2279 | sym->attr.pdt_len = c->attr.pdt_len; | |
2280 | if (c->initializer) | |
2281 | sym->value = gfc_copy_expr (c->initializer); | |
2282 | sym->attr.flavor = FL_VARIABLE; | |
2283 | } | |
2284 | ||
2285 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2286 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2287 | && decl_type_param_list) | |
2288 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2289 | ||
a4f15a7d | 2290 | return true; |
6de9cd9a DN |
2291 | } |
2292 | ||
2293 | ||
2294 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2295 | ||
2296 | match | |
636dff67 | 2297 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2298 | { |
2299 | gfc_symbol *sym; | |
576f6da6 | 2300 | match m, m2 = MATCH_NO; |
6de9cd9a | 2301 | |
576f6da6 TB |
2302 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2303 | return MATCH_ERROR; | |
2304 | ||
2305 | if (m == MATCH_NO) | |
2306 | { | |
2307 | locus old_loc; | |
2308 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2309 | ||
94241120 | 2310 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2311 | return m2; |
2312 | ||
2313 | old_loc = gfc_current_locus; | |
2314 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2315 | return MATCH_ERROR; | |
2316 | if (m2 != MATCH_YES | |
2317 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2318 | return MATCH_ERROR; | |
2319 | if (m2 == MATCH_NO) | |
2320 | { | |
2321 | gfc_current_locus = old_loc; | |
2322 | return MATCH_NO; | |
2323 | } | |
2324 | } | |
6de9cd9a DN |
2325 | |
2326 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2327 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2328 | { | |
2329 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2330 | return MATCH_ERROR; | |
2331 | } | |
2332 | ||
2333 | gfc_intrinsic_symbol (sym); | |
2334 | ||
2335 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2336 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2337 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2338 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2339 | return MATCH_ERROR; |
2340 | ||
b7e75771 | 2341 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2342 | |
576f6da6 TB |
2343 | /* Invalid per F2008, C512. */ |
2344 | if (m2 == MATCH_YES) | |
2345 | { | |
2346 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2347 | return MATCH_ERROR; | |
2348 | } | |
2349 | ||
6de9cd9a DN |
2350 | return MATCH_YES; |
2351 | } | |
2352 | ||
2353 | ||
80f95228 JW |
2354 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2355 | ||
2356 | static match | |
2357 | match_pointer_init (gfc_expr **init, int procptr) | |
2358 | { | |
2359 | match m; | |
2360 | ||
f6288c24 | 2361 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2362 | { |
2363 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2364 | "a PURE procedure"); | |
2365 | return MATCH_ERROR; | |
2366 | } | |
ccd7751b | 2367 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2368 | |
eea58adb | 2369 | /* Match NULL() initialization. */ |
80f95228 JW |
2370 | m = gfc_match_null (init); |
2371 | if (m != MATCH_NO) | |
2372 | return m; | |
2373 | ||
2374 | /* Match non-NULL initialization. */ | |
837c4b78 | 2375 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2376 | gfc_matching_procptr_assignment = procptr; |
2377 | m = gfc_match_rvalue (init); | |
837c4b78 | 2378 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2379 | gfc_matching_procptr_assignment = 0; |
2380 | if (m == MATCH_ERROR) | |
2381 | return MATCH_ERROR; | |
2382 | else if (m == MATCH_NO) | |
2383 | { | |
2384 | gfc_error ("Error in pointer initialization at %C"); | |
2385 | return MATCH_ERROR; | |
2386 | } | |
2387 | ||
dc9a54fa JW |
2388 | if (!procptr && !gfc_resolve_expr (*init)) |
2389 | return MATCH_ERROR; | |
f5acf0f2 | 2390 | |
524af0d6 JB |
2391 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2392 | "initialization at %C")) | |
80f95228 JW |
2393 | return MATCH_ERROR; |
2394 | ||
2395 | return MATCH_YES; | |
2396 | } | |
2397 | ||
2398 | ||
524af0d6 | 2399 | static bool |
bb9de0c4 JW |
2400 | check_function_name (char *name) |
2401 | { | |
2402 | /* In functions that have a RESULT variable defined, the function name always | |
2403 | refers to function calls. Therefore, the name is not allowed to appear in | |
2404 | specification statements. When checking this, be careful about | |
2405 | 'hidden' procedure pointer results ('ppr@'). */ | |
2406 | ||
2407 | if (gfc_current_state () == COMP_FUNCTION) | |
2408 | { | |
2409 | gfc_symbol *block = gfc_current_block (); | |
2410 | if (block && block->result && block->result != block | |
2411 | && strcmp (block->result->name, "ppr@") != 0 | |
2412 | && strcmp (block->name, name) == 0) | |
2413 | { | |
ba77f7ba SK |
2414 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2415 | "from appearing in a specification statement", | |
2416 | block->result->name, &block->result->declared_at, name); | |
524af0d6 | 2417 | return false; |
bb9de0c4 JW |
2418 | } |
2419 | } | |
2420 | ||
524af0d6 | 2421 | return true; |
bb9de0c4 JW |
2422 | } |
2423 | ||
2424 | ||
6de9cd9a DN |
2425 | /* Match a variable name with an optional initializer. When this |
2426 | subroutine is called, a variable is expected to be parsed next. | |
2427 | Depending on what is happening at the moment, updates either the | |
2428 | symbol table or the current interface. */ | |
2429 | ||
2430 | static match | |
949d5b72 | 2431 | variable_decl (int elem) |
6de9cd9a DN |
2432 | { |
2433 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2434 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2435 | gfc_expr *initializer, *char_len; |
2436 | gfc_array_spec *as; | |
83d890b9 | 2437 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2438 | gfc_charlen *cl; |
e69afb29 | 2439 | bool cl_deferred; |
6de9cd9a DN |
2440 | locus var_locus; |
2441 | match m; | |
524af0d6 | 2442 | bool t; |
83d890b9 | 2443 | gfc_symbol *sym; |
6de9cd9a DN |
2444 | |
2445 | initializer = NULL; | |
2446 | as = NULL; | |
83d890b9 | 2447 | cp_as = NULL; |
6de9cd9a DN |
2448 | |
2449 | /* When we get here, we've just matched a list of attributes and | |
2450 | maybe a type and a double colon. The next thing we expect to see | |
2451 | is the name of the symbol. */ | |
6f855a26 FR |
2452 | |
2453 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2454 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2455 | m = MATCH_NO; | |
2456 | gfc_gobble_whitespace (); | |
2457 | if (gfc_peek_ascii_char () == '%') | |
2458 | { | |
2459 | gfc_next_ascii_char (); | |
2460 | m = gfc_match ("fill"); | |
2461 | } | |
2462 | ||
6de9cd9a | 2463 | if (m != MATCH_YES) |
6f855a26 FR |
2464 | { |
2465 | m = gfc_match_name (name); | |
2466 | if (m != MATCH_YES) | |
2467 | goto cleanup; | |
2468 | } | |
2469 | ||
2470 | else | |
2471 | { | |
2472 | m = MATCH_ERROR; | |
2473 | if (gfc_current_state () != COMP_STRUCTURE) | |
2474 | { | |
2475 | if (flag_dec_structure) | |
2476 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2477 | else | |
2478 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2479 | "%<-fdec-structure%>", "%FILL"); | |
2480 | goto cleanup; | |
2481 | } | |
2482 | ||
2483 | if (attr_seen) | |
2484 | { | |
2485 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2486 | goto cleanup; | |
2487 | } | |
2488 | ||
2489 | /* %FILL components are given invalid fortran names. */ | |
2490 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
6f855a26 | 2491 | } |
6de9cd9a | 2492 | |
63645982 | 2493 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2494 | |
2495 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2496 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2497 | if (m == MATCH_ERROR) |
6de9cd9a | 2498 | goto cleanup; |
25d8f0a2 | 2499 | |
6de9cd9a DN |
2500 | if (m == MATCH_NO) |
2501 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2502 | else if (current_as |
524af0d6 | 2503 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2504 | { |
2505 | m = MATCH_ERROR; | |
2506 | goto cleanup; | |
2507 | } | |
6de9cd9a | 2508 | |
c61819ff | 2509 | if (flag_cray_pointer) |
11126dc0 AL |
2510 | cp_as = gfc_copy_array_spec (as); |
2511 | ||
f5ca06e6 DK |
2512 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2513 | determine (and check) whether it can be implied-shape. If it | |
67914693 | 2514 | was parsed as assumed-size, change it because PARAMETERs cannot |
09ef33c1 SK |
2515 | be assumed-size. |
2516 | ||
2517 | An explicit-shape-array cannot appear under several conditions. | |
2518 | That check is done here as well. */ | |
f5ca06e6 DK |
2519 | if (as) |
2520 | { | |
2521 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2522 | { | |
2523 | m = MATCH_ERROR; | |
1fe61adf | 2524 | gfc_error ("Non-PARAMETER symbol %qs at %L cannot be implied-shape", |
f5ca06e6 DK |
2525 | name, &var_locus); |
2526 | goto cleanup; | |
2527 | } | |
2528 | ||
2529 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2530 | && current_attr.flavor == FL_PARAMETER) | |
2531 | as->type = AS_IMPLIED_SHAPE; | |
2532 | ||
2533 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2534 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2535 | &var_locus)) |
f5ca06e6 DK |
2536 | { |
2537 | m = MATCH_ERROR; | |
2538 | goto cleanup; | |
2539 | } | |
09ef33c1 SK |
2540 | |
2541 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2542 | constant expressions shall appear only in a subprogram, derived | |
2543 | type definition, BLOCK construct, or interface body. */ | |
2544 | if (as->type == AS_EXPLICIT | |
2545 | && gfc_current_state () != COMP_BLOCK | |
2546 | && gfc_current_state () != COMP_DERIVED | |
2547 | && gfc_current_state () != COMP_FUNCTION | |
2548 | && gfc_current_state () != COMP_INTERFACE | |
2549 | && gfc_current_state () != COMP_SUBROUTINE) | |
2550 | { | |
2551 | gfc_expr *e; | |
2552 | bool not_constant = false; | |
2553 | ||
2554 | for (int i = 0; i < as->rank; i++) | |
2555 | { | |
2556 | e = gfc_copy_expr (as->lower[i]); | |
2557 | gfc_resolve_expr (e); | |
2558 | gfc_simplify_expr (e, 0); | |
2559 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2560 | { | |
2561 | not_constant = true; | |
2562 | break; | |
2563 | } | |
2564 | gfc_free_expr (e); | |
2565 | ||
2566 | e = gfc_copy_expr (as->upper[i]); | |
2567 | gfc_resolve_expr (e); | |
2568 | gfc_simplify_expr (e, 0); | |
2569 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2570 | { | |
2571 | not_constant = true; | |
2572 | break; | |
2573 | } | |
2574 | gfc_free_expr (e); | |
2575 | } | |
2576 | ||
2577 | if (not_constant) | |
5b9a3332 | 2578 | { |
09ef33c1 SK |
2579 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2580 | m = MATCH_ERROR; | |
2581 | goto cleanup; | |
2582 | } | |
2583 | } | |
078c5aff TK |
2584 | if (as->type == AS_EXPLICIT) |
2585 | { | |
2586 | for (int i = 0; i < as->rank; i++) | |
2587 | { | |
2588 | gfc_expr *e, *n; | |
2589 | e = as->lower[i]; | |
2590 | if (e->expr_type != EXPR_CONSTANT) | |
2591 | { | |
2592 | n = gfc_copy_expr (e); | |
2593 | gfc_simplify_expr (n, 1); | |
2594 | if (n->expr_type == EXPR_CONSTANT) | |
2595 | gfc_replace_expr (e, n); | |
2596 | else | |
2597 | gfc_free_expr (n); | |
2598 | } | |
2599 | e = as->upper[i]; | |
2600 | if (e->expr_type != EXPR_CONSTANT) | |
2601 | { | |
2602 | n = gfc_copy_expr (e); | |
2603 | gfc_simplify_expr (n, 1); | |
2604 | if (n->expr_type == EXPR_CONSTANT) | |
2605 | gfc_replace_expr (e, n); | |
2606 | else | |
2607 | gfc_free_expr (n); | |
2608 | } | |
2609 | } | |
2610 | } | |
f5ca06e6 DK |
2611 | } |
2612 | ||
6de9cd9a DN |
2613 | char_len = NULL; |
2614 | cl = NULL; | |
e69afb29 | 2615 | cl_deferred = false; |
6de9cd9a DN |
2616 | |
2617 | if (current_ts.type == BT_CHARACTER) | |
2618 | { | |
2767f2cc | 2619 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2620 | { |
2621 | case MATCH_YES: | |
b76e28c6 | 2622 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2623 | |
2624 | cl->length = char_len; | |
2625 | break; | |
2626 | ||
949d5b72 | 2627 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2628 | element. Also copy assumed lengths. */ |
6de9cd9a | 2629 | case MATCH_NO: |
9b21a380 | 2630 | if (elem > 1 |
bc21d315 JW |
2631 | && (current_ts.u.cl->length == NULL |
2632 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2633 | { |
b76e28c6 | 2634 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2635 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2636 | } |
2637 | else | |
bc21d315 | 2638 | cl = current_ts.u.cl; |
949d5b72 | 2639 | |
e69afb29 SK |
2640 | cl_deferred = current_ts.deferred; |
2641 | ||
6de9cd9a DN |
2642 | break; |
2643 | ||
2644 | case MATCH_ERROR: | |
2645 | goto cleanup; | |
2646 | } | |
2647 | } | |
2648 | ||
4668d6f9 PT |
2649 | /* The dummy arguments and result of the abreviated form of MODULE |
2650 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2651 | if (gfc_current_ns->proc_name | |
2652 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2653 | { | |
2654 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2655 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2656 | { | |
2657 | m = MATCH_ERROR; | |
811582ec | 2658 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2659 | "in the corresponding interface for MODULE " |
811582ec | 2660 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2661 | gfc_current_ns->proc_name->name); |
2662 | goto cleanup; | |
2663 | } | |
2664 | } | |
2665 | ||
6f855a26 | 2666 | /* %FILL components may not have initializers. */ |
2eb3745a | 2667 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
6f855a26 FR |
2668 | { |
2669 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2670 | m = MATCH_ERROR; | |
2671 | goto cleanup; | |
2672 | } | |
2673 | ||
83d890b9 | 2674 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2675 | and this is not a component declaration, |
66e4ab31 | 2676 | then we want to set the type & bail out. */ |
f6288c24 | 2677 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2678 | { |
2679 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2680 | if (sym != NULL && sym->attr.cray_pointee) | |
2681 | { | |
83d890b9 | 2682 | m = MATCH_YES; |
5b9a3332 PT |
2683 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2684 | { | |
2685 | m = MATCH_ERROR; | |
2686 | goto cleanup; | |
2687 | } | |
f5acf0f2 | 2688 | |
83d890b9 AL |
2689 | /* Check to see if we have an array specification. */ |
2690 | if (cp_as != NULL) | |
2691 | { | |
2692 | if (sym->as != NULL) | |
2693 | { | |
e25a0da3 | 2694 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2695 | gfc_free_array_spec (cp_as); |
2696 | m = MATCH_ERROR; | |
2697 | goto cleanup; | |
2698 | } | |
2699 | else | |
2700 | { | |
524af0d6 | 2701 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
1fe61adf | 2702 | gfc_internal_error ("Cannot set pointee array spec."); |
d51347f9 | 2703 | |
83d890b9 | 2704 | /* Fix the array spec. */ |
d51347f9 | 2705 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2706 | if (m == MATCH_ERROR) |
2707 | goto cleanup; | |
2708 | } | |
d51347f9 | 2709 | } |
83d890b9 AL |
2710 | goto cleanup; |
2711 | } | |
2712 | else | |
2713 | { | |
2714 | gfc_free_array_spec (cp_as); | |
2715 | } | |
2716 | } | |
d51347f9 | 2717 | |
3070bab4 JW |
2718 | /* Procedure pointer as function result. */ |
2719 | if (gfc_current_state () == COMP_FUNCTION | |
2720 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2721 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2722 | strcpy (name, "ppr@"); | |
2723 | ||
2724 | if (gfc_current_state () == COMP_FUNCTION | |
2725 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2726 | && gfc_current_block ()->result | |
2727 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2728 | strcpy (name, "ppr@"); | |
d51347f9 | 2729 | |
6de9cd9a DN |
2730 | /* OK, we've successfully matched the declaration. Now put the |
2731 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2732 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2733 | perfectly legal: |
2734 | ||
2735 | integer, parameter :: i = huge(i) | |
2736 | ||
2737 | This is only true for parameters or variables of a basic type. | |
2738 | For components of derived types, it is not true, so we don't | |
2739 | create a symbol for those yet. If we fail to create the symbol, | |
2740 | bail out. */ | |
f6288c24 | 2741 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2742 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2743 | { |
72af9f0b PT |
2744 | m = MATCH_ERROR; |
2745 | goto cleanup; | |
2746 | } | |
2747 | ||
524af0d6 | 2748 | if (!check_function_name (name)) |
6de9cd9a | 2749 | { |
6de9cd9a DN |
2750 | m = MATCH_ERROR; |
2751 | goto cleanup; | |
2752 | } | |
2753 | ||
294fbfc8 TS |
2754 | /* We allow old-style initializations of the form |
2755 | integer i /2/, j(4) /3*3, 1/ | |
2756 | (if no colon has been seen). These are different from data | |
2757 | statements in that initializers are only allowed to apply to the | |
2758 | variable immediately preceding, i.e. | |
2759 | integer i, j /1, 2/ | |
2760 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2761 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2762 | |
2763 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2764 | { | |
524af0d6 JB |
2765 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2766 | "initialization at %C")) | |
294fbfc8 | 2767 | return MATCH_ERROR; |
f6288c24 FR |
2768 | |
2769 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2770 | but not components of derived types. */ | |
b18f1efc JJ |
2771 | else if (gfc_current_state () == COMP_DERIVED) |
2772 | { | |
2773 | gfc_error ("Invalid old style initialization for derived type " | |
2774 | "component at %C"); | |
2775 | m = MATCH_ERROR; | |
2776 | goto cleanup; | |
2777 | } | |
f5acf0f2 | 2778 | |
f6288c24 FR |
2779 | /* For structure components, read the initializer as a special |
2780 | expression and let the rest of this function apply the initializer | |
2781 | as usual. */ | |
2782 | else if (gfc_comp_struct (gfc_current_state ())) | |
2783 | { | |
2784 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2785 | if (m == MATCH_NO) | |
2786 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2787 | name); | |
2788 | if (m != MATCH_YES) | |
2789 | goto cleanup; | |
2790 | } | |
2791 | ||
2792 | /* Otherwise we treat the old style initialization just like a | |
2793 | DATA declaration for the current variable. */ | |
2794 | else | |
2795 | return match_old_style_init (name); | |
294fbfc8 TS |
2796 | } |
2797 | ||
6de9cd9a DN |
2798 | /* The double colon must be present in order to have initializers. |
2799 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2800 | if (colon_seen) | |
2801 | { | |
2802 | if (gfc_match (" =>") == MATCH_YES) | |
2803 | { | |
6de9cd9a DN |
2804 | if (!current_attr.pointer) |
2805 | { | |
2806 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2807 | m = MATCH_ERROR; | |
2808 | goto cleanup; | |
2809 | } | |
2810 | ||
80f95228 | 2811 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2812 | if (m != MATCH_YES) |
2813 | goto cleanup; | |
2cf4aa79 SK |
2814 | |
2815 | /* The target of a pointer initialization must have the SAVE | |
2816 | attribute. A variable in PROGRAM, MODULE, or SUBMODULE scope | |
2817 | is implicit SAVEd. Explicitly, set the SAVE_IMPLICIT value. */ | |
2818 | if (initializer->expr_type == EXPR_VARIABLE | |
2819 | && initializer->symtree->n.sym->attr.save == SAVE_NONE | |
2820 | && (gfc_current_state () == COMP_PROGRAM | |
2821 | || gfc_current_state () == COMP_MODULE | |
2822 | || gfc_current_state () == COMP_SUBMODULE)) | |
2823 | initializer->symtree->n.sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2824 | } |
2825 | else if (gfc_match_char ('=') == MATCH_YES) | |
2826 | { | |
2827 | if (current_attr.pointer) | |
2828 | { | |
a4d9b221 TB |
2829 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2830 | "not %<=%>"); | |
6de9cd9a DN |
2831 | m = MATCH_ERROR; |
2832 | goto cleanup; | |
2833 | } | |
2834 | ||
2835 | m = gfc_match_init_expr (&initializer); | |
2836 | if (m == MATCH_NO) | |
2837 | { | |
2838 | gfc_error ("Expected an initialization expression at %C"); | |
2839 | m = MATCH_ERROR; | |
2840 | } | |
2841 | ||
ade20620 | 2842 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2843 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2844 | { |
636dff67 SK |
2845 | gfc_error ("Initialization of variable at %C is not allowed in " |
2846 | "a PURE procedure"); | |
6de9cd9a DN |
2847 | m = MATCH_ERROR; |
2848 | } | |
2849 | ||
ccd7751b | 2850 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2851 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2852 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2853 | ||
6de9cd9a DN |
2854 | if (m != MATCH_YES) |
2855 | goto cleanup; | |
2856 | } | |
cb44ab82 VL |
2857 | } |
2858 | ||
5046aff5 | 2859 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2860 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2861 | { |
636dff67 SK |
2862 | gfc_error ("Initialization of allocatable component at %C is not " |
2863 | "allowed"); | |
5046aff5 PT |
2864 | m = MATCH_ERROR; |
2865 | goto cleanup; | |
2866 | } | |
2867 | ||
18a4e7e3 PT |
2868 | if (gfc_current_state () == COMP_DERIVED |
2869 | && gfc_current_block ()->attr.pdt_template) | |
2870 | { | |
2871 | gfc_symbol *param; | |
2872 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2873 | 0, ¶m); | |
2874 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2875 | { | |
2876 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2877 | "not appear in the type parameter list at %L", | |
2878 | &gfc_current_block ()->declared_at); | |
2879 | m = MATCH_ERROR; | |
2880 | goto cleanup; | |
2881 | } | |
2882 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2883 | { | |
2884 | gfc_error ("The component at %C that appears in the type parameter " | |
2885 | "list at %L has neither the KIND nor LEN attribute", | |
2886 | &gfc_current_block ()->declared_at); | |
2887 | m = MATCH_ERROR; | |
2888 | goto cleanup; | |
2889 | } | |
2890 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2891 | { | |
2892 | gfc_error ("The component at %C which is a type parameter must be " | |
2893 | "a scalar"); | |
2894 | m = MATCH_ERROR; | |
2895 | goto cleanup; | |
2896 | } | |
2897 | else if (param && initializer) | |
2898 | param->value = gfc_copy_expr (initializer); | |
2899 | } | |
2900 | ||
e310b381 | 2901 | /* Before adding a possible initilizer, do a simple check for compatibility |
26ca4e05 | 2902 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
e310b381 SK |
2903 | good thing. */ |
2904 | if (current_ts.type == BT_DERIVED && initializer | |
2905 | && (gfc_numeric_ts (&initializer->ts) | |
2906 | || initializer->ts.type == BT_LOGICAL | |
2907 | || initializer->ts.type == BT_CHARACTER)) | |
2908 | { | |
26ca4e05 | 2909 | gfc_error ("Incompatible initialization between a derived type " |
e310b381 SK |
2910 | "entity and an entity with %qs type at %C", |
2911 | gfc_typename (&initializer->ts)); | |
2912 | m = MATCH_ERROR; | |
2913 | goto cleanup; | |
2914 | } | |
2915 | ||
2916 | ||
54b4ba60 | 2917 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2918 | NULL here, because we sometimes also need to check if a |
2919 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2920 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2921 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2922 | else | |
54b4ba60 | 2923 | { |
5046aff5 | 2924 | if (current_ts.type == BT_DERIVED |
636dff67 | 2925 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2926 | initializer = gfc_default_initializer (¤t_ts); |
2927 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2928 | |
2929 | /* If we match a nested structure definition we expect to see the | |
2930 | * body even if the variable declarations blow up, so we need to keep | |
2931 | * the structure declaration around. */ | |
2932 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2933 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2934 | } |
6de9cd9a | 2935 | |
524af0d6 | 2936 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2937 | |
2938 | cleanup: | |
2939 | /* Free stuff up and return. */ | |
2940 | gfc_free_expr (initializer); | |
2941 | gfc_free_array_spec (as); | |
2942 | ||
2943 | return m; | |
2944 | } | |
2945 | ||
2946 | ||
b2b81a3f BM |
2947 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2948 | This assumes that the byte size is equal to the kind number for | |
2949 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2950 | |
2951 | match | |
636dff67 | 2952 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2953 | { |
2954 | match m; | |
5cf54585 | 2955 | int original_kind; |
6de9cd9a DN |
2956 | |
2957 | if (gfc_match_char ('*') != MATCH_YES) | |
2958 | return MATCH_NO; | |
2959 | ||
5cf54585 | 2960 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2961 | if (m != MATCH_YES) |
2962 | return MATCH_ERROR; | |
2963 | ||
e45b3c75 ES |
2964 | original_kind = ts->kind; |
2965 | ||
6de9cd9a | 2966 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2967 | if (ts->type == BT_COMPLEX) |
2968 | { | |
2969 | if (ts->kind % 2) | |
636dff67 SK |
2970 | { |
2971 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2972 | gfc_basic_typename (ts->type), original_kind); | |
2973 | return MATCH_ERROR; | |
2974 | } | |
e45b3c75 | 2975 | ts->kind /= 2; |
f4347334 ZG |
2976 | |
2977 | } | |
2978 | ||
203c7ebf | 2979 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2980 | ts->kind = 8; |
2981 | ||
2982 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2983 | { | |
2984 | if (ts->kind == 4) | |
2985 | { | |
203c7ebf | 2986 | if (flag_real4_kind == 8) |
f4347334 | 2987 | ts->kind = 8; |
203c7ebf | 2988 | if (flag_real4_kind == 10) |
f4347334 | 2989 | ts->kind = 10; |
203c7ebf | 2990 | if (flag_real4_kind == 16) |
f4347334 ZG |
2991 | ts->kind = 16; |
2992 | } | |
2993 | ||
2994 | if (ts->kind == 8) | |
2995 | { | |
203c7ebf | 2996 | if (flag_real8_kind == 4) |
f4347334 | 2997 | ts->kind = 4; |
203c7ebf | 2998 | if (flag_real8_kind == 10) |
f4347334 | 2999 | ts->kind = 10; |
203c7ebf | 3000 | if (flag_real8_kind == 16) |
f4347334 ZG |
3001 | ts->kind = 16; |
3002 | } | |
e45b3c75 | 3003 | } |
6de9cd9a | 3004 | |
e7a2d5fb | 3005 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 3006 | { |
e45b3c75 | 3007 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 3008 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
3009 | return MATCH_ERROR; |
3010 | } | |
3011 | ||
70112e2a PT |
3012 | if (!gfc_notify_std (GFC_STD_GNU, |
3013 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 3014 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
3015 | return MATCH_ERROR; |
3016 | ||
6de9cd9a DN |
3017 | return MATCH_YES; |
3018 | } | |
3019 | ||
3020 | ||
3021 | /* Match a kind specification. Since kinds are generally optional, we | |
3022 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
3023 | string is found, then we know we have an error. */ | |
3024 | ||
3025 | match | |
e2d29968 | 3026 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 3027 | { |
e2d29968 | 3028 | locus where, loc; |
6de9cd9a DN |
3029 | gfc_expr *e; |
3030 | match m, n; | |
96ee3a4a | 3031 | char c; |
6de9cd9a DN |
3032 | |
3033 | m = MATCH_NO; | |
e2d29968 | 3034 | n = MATCH_YES; |
6de9cd9a | 3035 | e = NULL; |
5bab4c96 | 3036 | saved_kind_expr = NULL; |
6de9cd9a | 3037 | |
e2d29968 PT |
3038 | where = loc = gfc_current_locus; |
3039 | ||
3040 | if (kind_expr_only) | |
3041 | goto kind_expr; | |
6de9cd9a DN |
3042 | |
3043 | if (gfc_match_char ('(') == MATCH_NO) | |
3044 | return MATCH_NO; | |
3045 | ||
3046 | /* Also gobbles optional text. */ | |
3047 | if (gfc_match (" kind = ") == MATCH_YES) | |
3048 | m = MATCH_ERROR; | |
3049 | ||
e2d29968 PT |
3050 | loc = gfc_current_locus; |
3051 | ||
3052 | kind_expr: | |
5bab4c96 | 3053 | |
6de9cd9a | 3054 | n = gfc_match_init_expr (&e); |
e2d29968 | 3055 | |
5bab4c96 PT |
3056 | if (gfc_derived_parameter_expr (e)) |
3057 | { | |
3058 | ts->kind = 0; | |
3059 | saved_kind_expr = gfc_copy_expr (e); | |
3060 | goto close_brackets; | |
3061 | } | |
3062 | ||
6de9cd9a | 3063 | if (n != MATCH_YES) |
e2d29968 | 3064 | { |
1c8bcdf7 | 3065 | if (gfc_matching_function) |
e2d29968 | 3066 | { |
f5acf0f2 | 3067 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
3068 | imported parameters and try again after the specification |
3069 | expressions..... */ | |
e2d29968 PT |
3070 | if (gfc_match_char (')') != MATCH_YES) |
3071 | { | |
3072 | gfc_error ("Missing right parenthesis at %C"); | |
3073 | m = MATCH_ERROR; | |
3074 | goto no_match; | |
3075 | } | |
3076 | ||
3077 | gfc_free_expr (e); | |
e2d29968 PT |
3078 | gfc_undo_symbols (); |
3079 | return MATCH_YES; | |
3080 | } | |
3081 | else | |
3082 | { | |
3083 | /* ....or else, the match is real. */ | |
3084 | if (n == MATCH_NO) | |
3085 | gfc_error ("Expected initialization expression at %C"); | |
3086 | if (n != MATCH_YES) | |
3087 | return MATCH_ERROR; | |
3088 | } | |
3089 | } | |
6de9cd9a DN |
3090 | |
3091 | if (e->rank != 0) | |
3092 | { | |
3093 | gfc_error ("Expected scalar initialization expression at %C"); | |
3094 | m = MATCH_ERROR; | |
3095 | goto no_match; | |
3096 | } | |
3097 | ||
51f03c6b | 3098 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 3099 | { |
6de9cd9a DN |
3100 | m = MATCH_ERROR; |
3101 | goto no_match; | |
3102 | } | |
3103 | ||
a8b3b0b6 CR |
3104 | /* Before throwing away the expression, let's see if we had a |
3105 | C interoperable kind (and store the fact). */ | |
3106 | if (e->ts.is_c_interop == 1) | |
3107 | { | |
eea58adb | 3108 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
3109 | of the named constants from iso_c_binding. */ |
3110 | ts->is_c_interop = e->ts.is_iso_c; | |
3111 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
3112 | if (e->symtree) |
3113 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 3114 | } |
f5acf0f2 | 3115 | |
6de9cd9a DN |
3116 | gfc_free_expr (e); |
3117 | e = NULL; | |
3118 | ||
a8b3b0b6 CR |
3119 | /* Ignore errors to this point, if we've gotten here. This means |
3120 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 3121 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
3122 | { |
3123 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3124 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
3125 | gfc_current_locus = where; |
3126 | return MATCH_ERROR; | |
6de9cd9a | 3127 | } |
96ee3a4a | 3128 | |
2ec855f1 TB |
3129 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3130 | if, e.g., c_double is used for COMPLEX as the standard | |
3131 | explicitly says that the kind type parameter for complex and real | |
3132 | variable is the same, i.e. c_float == c_float_complex. */ | |
3133 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3134 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3135 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 3136 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
3137 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3138 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 3139 | |
5bab4c96 PT |
3140 | close_brackets: |
3141 | ||
96ee3a4a | 3142 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
3143 | if ((c = gfc_next_ascii_char ()) != ')' |
3144 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 3145 | { |
96ee3a4a TB |
3146 | if (ts->type == BT_CHARACTER) |
3147 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3148 | else | |
3149 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 3150 | m = MATCH_ERROR; |
6de9cd9a | 3151 | } |
a8b3b0b6 CR |
3152 | else |
3153 | /* All tests passed. */ | |
3154 | m = MATCH_YES; | |
6de9cd9a | 3155 | |
a8b3b0b6 CR |
3156 | if(m == MATCH_ERROR) |
3157 | gfc_current_locus = where; | |
f4347334 | 3158 | |
203c7ebf | 3159 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
3160 | ts->kind = 8; |
3161 | ||
3162 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3163 | { | |
3164 | if (ts->kind == 4) | |
3165 | { | |
203c7ebf | 3166 | if (flag_real4_kind == 8) |
f4347334 | 3167 | ts->kind = 8; |
203c7ebf | 3168 | if (flag_real4_kind == 10) |
f4347334 | 3169 | ts->kind = 10; |
203c7ebf | 3170 | if (flag_real4_kind == 16) |
f4347334 ZG |
3171 | ts->kind = 16; |
3172 | } | |
3173 | ||
3174 | if (ts->kind == 8) | |
3175 | { | |
203c7ebf | 3176 | if (flag_real8_kind == 4) |
f4347334 | 3177 | ts->kind = 4; |
203c7ebf | 3178 | if (flag_real8_kind == 10) |
f4347334 | 3179 | ts->kind = 10; |
203c7ebf | 3180 | if (flag_real8_kind == 16) |
f4347334 ZG |
3181 | ts->kind = 16; |
3182 | } | |
3183 | } | |
3184 | ||
a8b3b0b6 CR |
3185 | /* Return what we know from the test(s). */ |
3186 | return m; | |
6de9cd9a DN |
3187 | |
3188 | no_match: | |
3189 | gfc_free_expr (e); | |
63645982 | 3190 | gfc_current_locus = where; |
6de9cd9a DN |
3191 | return m; |
3192 | } | |
3193 | ||
3194 | ||
187de1ed FXC |
3195 | static match |
3196 | match_char_kind (int * kind, int * is_iso_c) | |
3197 | { | |
3198 | locus where; | |
3199 | gfc_expr *e; | |
3200 | match m, n; | |
51f03c6b | 3201 | bool fail; |
187de1ed FXC |
3202 | |
3203 | m = MATCH_NO; | |
3204 | e = NULL; | |
3205 | where = gfc_current_locus; | |
3206 | ||
3207 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 3208 | |
1c8bcdf7 | 3209 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 3210 | { |
1c8bcdf7 | 3211 | /* The expression might include use-associated or imported |
f5acf0f2 | 3212 | parameters and try again after the specification |
1c8bcdf7 | 3213 | expressions. */ |
96ee3a4a | 3214 | gfc_free_expr (e); |
96ee3a4a TB |
3215 | gfc_undo_symbols (); |
3216 | return MATCH_YES; | |
3217 | } | |
3218 | ||
187de1ed FXC |
3219 | if (n == MATCH_NO) |
3220 | gfc_error ("Expected initialization expression at %C"); | |
3221 | if (n != MATCH_YES) | |
3222 | return MATCH_ERROR; | |
3223 | ||
3224 | if (e->rank != 0) | |
3225 | { | |
3226 | gfc_error ("Expected scalar initialization expression at %C"); | |
3227 | m = MATCH_ERROR; | |
3228 | goto no_match; | |
3229 | } | |
3230 | ||
87f3a5cf PT |
3231 | if (gfc_derived_parameter_expr (e)) |
3232 | { | |
3233 | saved_kind_expr = e; | |
3234 | *kind = 0; | |
3235 | return MATCH_YES; | |
3236 | } | |
3237 | ||
51f03c6b | 3238 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 3239 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 3240 | if (fail) |
187de1ed | 3241 | { |
187de1ed FXC |
3242 | m = MATCH_ERROR; |
3243 | goto no_match; | |
3244 | } | |
3245 | ||
3246 | gfc_free_expr (e); | |
3247 | ||
3248 | /* Ignore errors to this point, if we've gotten here. This means | |
3249 | we ignore the m=MATCH_ERROR from above. */ | |
3250 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3251 | { | |
3252 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3253 | m = MATCH_ERROR; | |
3254 | } | |
3255 | else | |
3256 | /* All tests passed. */ | |
3257 | m = MATCH_YES; | |
3258 | ||
3259 | if (m == MATCH_ERROR) | |
3260 | gfc_current_locus = where; | |
f5acf0f2 | 3261 | |
187de1ed FXC |
3262 | /* Return what we know from the test(s). */ |
3263 | return m; | |
3264 | ||
3265 | no_match: | |
3266 | gfc_free_expr (e); | |
3267 | gfc_current_locus = where; | |
3268 | return m; | |
3269 | } | |
3270 | ||
8234e5e0 | 3271 | |
6de9cd9a DN |
3272 | /* Match the various kind/length specifications in a CHARACTER |
3273 | declaration. We don't return MATCH_NO. */ | |
3274 | ||
8234e5e0 SK |
3275 | match |
3276 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3277 | { |
187de1ed | 3278 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3279 | gfc_charlen *cl; |
3280 | gfc_expr *len; | |
3281 | match m; | |
e69afb29 | 3282 | bool deferred; |
187de1ed | 3283 | |
6de9cd9a DN |
3284 | len = NULL; |
3285 | seen_length = 0; | |
187de1ed FXC |
3286 | kind = 0; |
3287 | is_iso_c = 0; | |
e69afb29 | 3288 | deferred = false; |
6de9cd9a DN |
3289 | |
3290 | /* Try the old-style specification first. */ | |
3291 | old_char_selector = 0; | |
3292 | ||
2767f2cc | 3293 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3294 | if (m != MATCH_NO) |
3295 | { | |
3296 | if (m == MATCH_YES) | |
3297 | old_char_selector = 1; | |
3298 | seen_length = 1; | |
3299 | goto done; | |
3300 | } | |
3301 | ||
3302 | m = gfc_match_char ('('); | |
3303 | if (m != MATCH_YES) | |
3304 | { | |
a8b3b0b6 | 3305 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3306 | goto done; |
3307 | } | |
3308 | ||
a8b3b0b6 | 3309 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3310 | if (gfc_match (" kind =") == MATCH_YES) |
3311 | { | |
187de1ed | 3312 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3313 | |
6de9cd9a DN |
3314 | if (m == MATCH_ERROR) |
3315 | goto done; | |
3316 | if (m == MATCH_NO) | |
3317 | goto syntax; | |
3318 | ||
3319 | if (gfc_match (" , len =") == MATCH_NO) | |
3320 | goto rparen; | |
3321 | ||
e69afb29 | 3322 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3323 | if (m == MATCH_NO) |
3324 | goto syntax; | |
3325 | if (m == MATCH_ERROR) | |
3326 | goto done; | |
3327 | seen_length = 1; | |
3328 | ||
3329 | goto rparen; | |
3330 | } | |
3331 | ||
66e4ab31 | 3332 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3333 | if (gfc_match (" len =") == MATCH_YES) |
3334 | { | |
e69afb29 | 3335 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3336 | if (m == MATCH_NO) |
3337 | goto syntax; | |
3338 | if (m == MATCH_ERROR) | |
3339 | goto done; | |
3340 | seen_length = 1; | |
3341 | ||
3342 | if (gfc_match_char (')') == MATCH_YES) | |
3343 | goto done; | |
3344 | ||
3345 | if (gfc_match (" , kind =") != MATCH_YES) | |
3346 | goto syntax; | |
3347 | ||
187de1ed FXC |
3348 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3349 | goto done; | |
6de9cd9a DN |
3350 | |
3351 | goto rparen; | |
3352 | } | |
3353 | ||
66e4ab31 | 3354 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3355 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3356 | if (m == MATCH_NO) |
3357 | goto syntax; | |
3358 | if (m == MATCH_ERROR) | |
3359 | goto done; | |
3360 | seen_length = 1; | |
3361 | ||
3362 | m = gfc_match_char (')'); | |
3363 | if (m == MATCH_YES) | |
3364 | goto done; | |
3365 | ||
3366 | if (gfc_match_char (',') != MATCH_YES) | |
3367 | goto syntax; | |
3368 | ||
a8b3b0b6 | 3369 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3370 | |
187de1ed | 3371 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3372 | if (m == MATCH_ERROR) |
3373 | goto done; | |
3374 | if (m == MATCH_NO) | |
3375 | goto syntax; | |
3376 | ||
3377 | rparen: | |
3378 | /* Require a right-paren at this point. */ | |
3379 | m = gfc_match_char (')'); | |
3380 | if (m == MATCH_YES) | |
3381 | goto done; | |
3382 | ||
3383 | syntax: | |
3384 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3385 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3386 | gfc_free_expr (len); |
3387 | return m; | |
6de9cd9a DN |
3388 | |
3389 | done: | |
a99d95a2 PT |
3390 | /* Deal with character functions after USE and IMPORT statements. */ |
3391 | if (gfc_matching_function) | |
1c8bcdf7 | 3392 | { |
a99d95a2 | 3393 | gfc_free_expr (len); |
1c8bcdf7 PT |
3394 | gfc_undo_symbols (); |
3395 | return MATCH_YES; | |
3396 | } | |
3397 | ||
6de9cd9a DN |
3398 | if (m != MATCH_YES) |
3399 | { | |
3400 | gfc_free_expr (len); | |
3401 | return m; | |
3402 | } | |
3403 | ||
3404 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3405 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3406 | |
3407 | if (seen_length == 0) | |
f622221a | 3408 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3409 | else |
00df7c36 | 3410 | { |
3cf89a7b SK |
3411 | /* If gfortran ends up here, then len may be reducible to a constant. |
3412 | Try to do that here. If it does not reduce, simply assign len to | |
3413 | charlen. A complication occurs with user-defined generic functions, | |
3414 | which are not resolved. Use a private namespace to deal with | |
3415 | generic functions. */ | |
3416 | ||
00df7c36 SK |
3417 | if (len && len->expr_type != EXPR_CONSTANT) |
3418 | { | |
3cf89a7b | 3419 | gfc_namespace *old_ns; |
00df7c36 | 3420 | gfc_expr *e; |
3cf89a7b SK |
3421 | |
3422 | old_ns = gfc_current_ns; | |
3423 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3424 | ||
00df7c36 SK |
3425 | e = gfc_copy_expr (len); |
3426 | gfc_reduce_init_expr (e); | |
3427 | if (e->expr_type == EXPR_CONSTANT) | |
58da192e SK |
3428 | { |
3429 | gfc_replace_expr (len, e); | |
3430 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3431 | mpz_set_ui (len->value.integer, 0); | |
3432 | } | |
00df7c36 SK |
3433 | else |
3434 | gfc_free_expr (e); | |
3cf89a7b SK |
3435 | |
3436 | gfc_free_namespace (gfc_current_ns); | |
3437 | gfc_current_ns = old_ns; | |
00df7c36 | 3438 | } |
3cf89a7b SK |
3439 | |
3440 | cl->length = len; | |
00df7c36 | 3441 | } |
6de9cd9a | 3442 | |
bc21d315 | 3443 | ts->u.cl = cl; |
187de1ed | 3444 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3445 | ts->deferred = deferred; |
6de9cd9a | 3446 | |
eea58adb | 3447 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3448 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3449 | if (kind != 0) |
eea58adb | 3450 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3451 | of the named constants from iso_c_binding. */ |
3452 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3453 | else if (len != NULL) |
187de1ed FXC |
3454 | /* Here, we might have parsed something such as: character(c_char) |
3455 | In this case, the parsing code above grabs the c_char when | |
3456 | looking for the length (line 1690, roughly). it's the last | |
3457 | testcase for parsing the kind params of a character variable. | |
3458 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3459 | could be an error. |
187de1ed FXC |
3460 | To see if the user used a C interop kind, test the expr |
3461 | of the so called length, and see if it's C interoperable. */ | |
3462 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3463 | |
6de9cd9a DN |
3464 | return MATCH_YES; |
3465 | } | |
3466 | ||
3467 | ||
f6288c24 FR |
3468 | /* Matches a RECORD declaration. */ |
3469 | ||
3470 | static match | |
e79e6763 | 3471 | match_record_decl (char *name) |
f6288c24 FR |
3472 | { |
3473 | locus old_loc; | |
3474 | old_loc = gfc_current_locus; | |
e79e6763 | 3475 | match m; |
f6288c24 | 3476 | |
e79e6763 FR |
3477 | m = gfc_match (" record /"); |
3478 | if (m == MATCH_YES) | |
f6288c24 | 3479 | { |
f6d17ecd | 3480 | if (!flag_dec_structure) |
f6288c24 FR |
3481 | { |
3482 | gfc_current_locus = old_loc; | |
3483 | gfc_error ("RECORD at %C is an extension, enable it with " | |
a3f9f006 | 3484 | "%<-fdec-structure%>"); |
f6288c24 FR |
3485 | return MATCH_ERROR; |
3486 | } | |
e79e6763 FR |
3487 | m = gfc_match (" %n/", name); |
3488 | if (m == MATCH_YES) | |
3489 | return MATCH_YES; | |
f6288c24 FR |
3490 | } |
3491 | ||
e79e6763 | 3492 | gfc_current_locus = old_loc; |
f6d17ecd | 3493 | if (flag_dec_structure |
e79e6763 FR |
3494 | && (gfc_match (" record% ") == MATCH_YES |
3495 | || gfc_match (" record%t") == MATCH_YES)) | |
3496 | gfc_error ("Structure name expected after RECORD at %C"); | |
3497 | if (m == MATCH_NO) | |
f6288c24 | 3498 | return MATCH_NO; |
e79e6763 FR |
3499 | |
3500 | return MATCH_ERROR; | |
f6288c24 FR |
3501 | } |
3502 | ||
5bab4c96 PT |
3503 | |
3504 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3505 | of expressions to substitute into the possibly parameterized expression | |
3506 | 'e'. Using a list is inefficient but should not be too bad since the | |
3507 | number of type parameters is not likely to be large. */ | |
3508 | static bool | |
3509 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3510 | int* f) | |
3511 | { | |
3512 | gfc_actual_arglist *param; | |
3513 | gfc_expr *copy; | |
3514 | ||
3515 | if (e->expr_type != EXPR_VARIABLE) | |
3516 | return false; | |
3517 | ||
3518 | gcc_assert (e->symtree); | |
3519 | if (e->symtree->n.sym->attr.pdt_kind | |
3520 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3521 | { | |
3522 | for (param = type_param_spec_list; param; param = param->next) | |
3523 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3524 | break; | |
3525 | ||
3526 | if (param) | |
3527 | { | |
3528 | copy = gfc_copy_expr (param->expr); | |
3529 | *e = *copy; | |
3530 | free (copy); | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | return false; | |
3535 | } | |
3536 | ||
3537 | ||
3538 | bool | |
3539 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3540 | { | |
3541 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3542 | } | |
3543 | ||
3544 | ||
3545 | bool | |
3546 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3547 | { | |
3548 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3549 | type_param_spec_list = param_list; | |
3550 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3551 | type_param_spec_list = NULL; | |
3552 | type_param_spec_list = old_param_spec_list; | |
3553 | } | |
3554 | ||
3555 | /* Determines the instance of a parameterized derived type to be used by | |
3556 | matching determining the values of the kind parameters and using them | |
3557 | in the name of the instance. If the instance exists, it is used, otherwise | |
3558 | a new derived type is created. */ | |
3559 | match | |
3560 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3561 | gfc_actual_arglist **ext_param_list) | |
3562 | { | |
3563 | /* The PDT template symbol. */ | |
3564 | gfc_symbol *pdt = *sym; | |
3565 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3566 | gfc_symbol *param; | |
3567 | /* The hoped for instance of the PDT. */ | |
3568 | gfc_symbol *instance; | |
3569 | /* The list of parameters appearing in the PDT declaration. */ | |
3570 | gfc_formal_arglist *type_param_name_list; | |
3571 | /* Used to store the parameter specification list during recursive calls. */ | |
3572 | gfc_actual_arglist *old_param_spec_list; | |
3573 | /* Pointers to the parameter specification being used. */ | |
3574 | gfc_actual_arglist *actual_param; | |
3575 | gfc_actual_arglist *tail = NULL; | |
3576 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3577 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3578 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3579 | ||
3580 | bool name_seen = (param_list == NULL); | |
3581 | bool assumed_seen = false; | |
3582 | bool deferred_seen = false; | |
3583 | bool spec_error = false; | |
3584 | int kind_value, i; | |
3585 | gfc_expr *kind_expr; | |
3586 | gfc_component *c1, *c2; | |
3587 | match m; | |
3588 | ||
3589 | type_param_spec_list = NULL; | |
3590 | ||
3591 | type_param_name_list = pdt->formal; | |
3592 | actual_param = param_list; | |
3593 | sprintf (name, "Pdt%s", pdt->name); | |
3594 | ||
3595 | /* Run through the parameter name list and pick up the actual | |
3596 | parameter values or use the default values in the PDT declaration. */ | |
3597 | for (; type_param_name_list; | |
3598 | type_param_name_list = type_param_name_list->next) | |
3599 | { | |
3600 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3601 | { | |
3602 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3603 | spec_error = deferred_seen; | |
3604 | else | |
3605 | spec_error = assumed_seen; | |
3606 | ||
3607 | if (spec_error) | |
3608 | { | |
3609 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3610 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3611 | goto error_return; |
5bab4c96 PT |
3612 | } |
3613 | } | |
3614 | ||
3615 | if (actual_param && actual_param->name) | |
3616 | name_seen = true; | |
3617 | param = type_param_name_list->sym; | |
3618 | ||
276515e6 PT |
3619 | if (!param || !param->name) |
3620 | continue; | |
3621 | ||
18a4e7e3 | 3622 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3623 | /* An error should already have been thrown in resolve.c |
3624 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3625 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3626 | goto error_return; |
18a4e7e3 | 3627 | |
5bab4c96 PT |
3628 | kind_expr = NULL; |
3629 | if (!name_seen) | |
3630 | { | |
18a4e7e3 PT |
3631 | if (!actual_param && !(c1 && c1->initializer)) |
3632 | { | |
3633 | gfc_error ("The type parameter spec list at %C does not contain " | |
3634 | "enough parameter expressions"); | |
3635 | goto error_return; | |
3636 | } | |
3637 | else if (!actual_param && c1 && c1->initializer) | |
3638 | kind_expr = gfc_copy_expr (c1->initializer); | |
3639 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3640 | kind_expr = gfc_copy_expr (actual_param->expr); |
3641 | } | |
3642 | else | |
3643 | { | |
3644 | actual_param = param_list; | |
3645 | for (;actual_param; actual_param = actual_param->next) | |
3646 | if (actual_param->name | |
3647 | && strcmp (actual_param->name, param->name) == 0) | |
3648 | break; | |
3649 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3650 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3651 | else | |
3652 | { | |
62d3c075 PT |
3653 | if (c1->initializer) |
3654 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3655 | else if (!(actual_param && param->attr.pdt_len)) |
3656 | { | |
71a21b9e | 3657 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3658 | "have a default value", param->name); |
18a4e7e3 | 3659 | goto error_return; |
5bab4c96 PT |
3660 | } |
3661 | } | |
3662 | } | |
3663 | ||
3664 | /* Store the current parameter expressions in a temporary actual | |
3665 | arglist 'list' so that they can be substituted in the corresponding | |
3666 | expressions in the PDT instance. */ | |
3667 | if (type_param_spec_list == NULL) | |
3668 | { | |
3669 | type_param_spec_list = gfc_get_actual_arglist (); | |
3670 | tail = type_param_spec_list; | |
3671 | } | |
3672 | else | |
3673 | { | |
3674 | tail->next = gfc_get_actual_arglist (); | |
3675 | tail = tail->next; | |
3676 | } | |
3677 | tail->name = param->name; | |
3678 | ||
3679 | if (kind_expr) | |
3680 | { | |
87f3a5cf PT |
3681 | /* Try simplification even for LEN expressions. */ |
3682 | gfc_resolve_expr (kind_expr); | |
3683 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3684 | /* Variable expressions seem to default to BT_PROCEDURE. |
3685 | TODO find out why this is and fix it. */ | |
3686 | if (kind_expr->ts.type != BT_INTEGER | |
3687 | && kind_expr->ts.type != BT_PROCEDURE) | |
3688 | { | |
3689 | gfc_error ("The parameter expression at %C must be of " | |
3690 | "INTEGER type and not %s type", | |
3691 | gfc_basic_typename (kind_expr->ts.type)); | |
3692 | goto error_return; | |
3693 | } | |
3694 | ||
5bab4c96 | 3695 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3696 | } |
3697 | ||
3698 | if (actual_param) | |
3699 | tail->spec_type = actual_param->spec_type; | |
3700 | ||
3701 | if (!param->attr.pdt_kind) | |
3702 | { | |
18a4e7e3 | 3703 | if (!name_seen && actual_param) |
5bab4c96 PT |
3704 | actual_param = actual_param->next; |
3705 | if (kind_expr) | |
3706 | { | |
3707 | gfc_free_expr (kind_expr); | |
3708 | kind_expr = NULL; | |
3709 | } | |
3710 | continue; | |
3711 | } | |
3712 | ||
3713 | if (actual_param | |
3714 | && (actual_param->spec_type == SPEC_ASSUMED | |
3715 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3716 | { | |
71a21b9e | 3717 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3718 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3719 | goto error_return; |
5bab4c96 PT |
3720 | } |
3721 | ||
3722 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3723 | { | |
71a21b9e | 3724 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3725 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3726 | goto error_return; |
5bab4c96 PT |
3727 | } |
3728 | ||
3729 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3730 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3731 | |
3732 | if (!name_seen && actual_param) | |
3733 | actual_param = actual_param->next; | |
3734 | gfc_free_expr (kind_expr); | |
3735 | } | |
3736 | ||
18a4e7e3 PT |
3737 | if (!name_seen && actual_param) |
3738 | { | |
3739 | gfc_error ("The type parameter spec list at %C contains too many " | |
3740 | "parameter expressions"); | |
3741 | goto error_return; | |
3742 | } | |
3743 | ||
5bab4c96 PT |
3744 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3745 | build it, using 'pdt' as a template. */ | |
3746 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3747 | { | |
3748 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3749 | goto error_return; |
5bab4c96 PT |
3750 | } |
3751 | ||
3752 | m = MATCH_YES; | |
3753 | ||
3754 | if (instance->attr.flavor == FL_DERIVED | |
3755 | && instance->attr.pdt_type) | |
3756 | { | |
3757 | instance->refs++; | |
3758 | if (ext_param_list) | |
3759 | *ext_param_list = type_param_spec_list; | |
3760 | *sym = instance; | |
3761 | gfc_commit_symbols (); | |
3762 | return m; | |
3763 | } | |
3764 | ||
3765 | /* Start building the new instance of the parameterized type. */ | |
3766 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3767 | instance->attr.pdt_template = 0; | |
3768 | instance->attr.pdt_type = 1; | |
3769 | instance->declared_at = gfc_current_locus; | |
3770 | ||
3771 | /* Add the components, replacing the parameters in all expressions | |
3772 | with the expressions for their values in 'type_param_spec_list'. */ | |
3773 | c1 = pdt->components; | |
3774 | tail = type_param_spec_list; | |
3775 | for (; c1; c1 = c1->next) | |
3776 | { | |
3777 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3778 | |
5bab4c96 PT |
3779 | c2->ts = c1->ts; |
3780 | c2->attr = c1->attr; | |
3781 | ||
276515e6 PT |
3782 | /* The order of declaration of the type_specs might not be the |
3783 | same as that of the components. */ | |
3784 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3785 | { | |
3786 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3787 | if (strcmp (c1->name, tail->name) == 0) | |
3788 | break; | |
3789 | } | |
3790 | ||
5bab4c96 PT |
3791 | /* Deal with type extension by recursively calling this function |
3792 | to obtain the instance of the extended type. */ | |
3793 | if (gfc_current_state () != COMP_DERIVED | |
3794 | && c1 == pdt->components | |
3795 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3796 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3797 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3798 | { | |
3799 | gfc_formal_arglist *f; | |
3800 | ||
3801 | old_param_spec_list = type_param_spec_list; | |
3802 | ||
3803 | /* Obtain a spec list appropriate to the extended type..*/ | |
3804 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3805 | type_param_spec_list = actual_param; | |
3806 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3807 | actual_param = actual_param->next; | |
3808 | if (actual_param) | |
3809 | { | |
3810 | gfc_free_actual_arglist (actual_param->next); | |
3811 | actual_param->next = NULL; | |
3812 | } | |
3813 | ||
3814 | /* Now obtain the PDT instance for the extended type. */ | |
3815 | c2->param_list = type_param_spec_list; | |
3816 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3817 | NULL); | |
3818 | type_param_spec_list = old_param_spec_list; | |
3819 | ||
3820 | c2->ts.u.derived->refs++; | |
3821 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3822 | ||
3823 | /* Set extension level. */ | |
3824 | if (c2->ts.u.derived->attr.extension == 255) | |
3825 | { | |
3826 | /* Since the extension field is 8 bit wide, we can only have | |
3827 | up to 255 extension levels. */ | |
3828 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3829 | c2->ts.u.derived->name, | |
3830 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3831 | goto error_return; |
5bab4c96 PT |
3832 | } |
3833 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3834 | ||
5bab4c96 PT |
3835 | continue; |
3836 | } | |
3837 | ||
3838 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3839 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3840 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3841 | { |
3842 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3843 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3844 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3845 | gfc_extract_int (e, &c2->ts.kind); |
3846 | gfc_free_expr (e); | |
18a4e7e3 PT |
3847 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3848 | { | |
3849 | gfc_error ("Kind %d not supported for type %s at %C", | |
3850 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3851 | goto error_return; | |
3852 | } | |
5bab4c96 PT |
3853 | } |
3854 | ||
3855 | /* Similarly, set the string length if parameterized. */ | |
3856 | if (c1->ts.type == BT_CHARACTER | |
3857 | && c1->ts.u.cl->length | |
3858 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3859 | { | |
3860 | gfc_expr *e; | |
3861 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3862 | gfc_insert_kind_parameter_exprs (e); | |
3863 | gfc_simplify_expr (e, 1); | |
3864 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3865 | c2->ts.u.cl->length = e; | |
3866 | c2->attr.pdt_string = 1; | |
3867 | } | |
3868 | ||
3869 | /* Set up either the KIND/LEN initializer, if constant, | |
3870 | or the parameterized expression. Use the template | |
3871 | initializer if one is not already set in this instance. */ | |
3872 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3873 | { | |
3874 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3875 | c2->initializer = gfc_copy_expr (tail->expr); | |
3876 | else if (tail && tail->expr) | |
3877 | { | |
3878 | c2->param_list = gfc_get_actual_arglist (); | |
3879 | c2->param_list->name = tail->name; | |
3880 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3881 | c2->param_list->next = NULL; | |
3882 | } | |
3883 | ||
3884 | if (!c2->initializer && c1->initializer) | |
3885 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3886 | } |
3887 | ||
3888 | /* Copy the array spec. */ | |
3889 | c2->as = gfc_copy_array_spec (c1->as); | |
3890 | if (c1->ts.type == BT_CLASS) | |
3891 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3892 | ||
3893 | /* Determine if an array spec is parameterized. If so, substitute | |
3894 | in the parameter expressions for the bounds and set the pdt_array | |
3895 | attribute. Notice that this attribute must be unconditionally set | |
3896 | if this is an array of parameterized character length. */ | |
3897 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3898 | { | |
3899 | bool pdt_array = false; | |
3900 | ||
3901 | /* Are the bounds of the array parameterized? */ | |
3902 | for (i = 0; i < c1->as->rank; i++) | |
3903 | { | |
3904 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3905 | pdt_array = true; | |
3906 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3907 | pdt_array = true; | |
3908 | } | |
3909 | ||
3910 | /* If they are, free the expressions for the bounds and | |
3911 | replace them with the template expressions with substitute | |
3912 | values. */ | |
3913 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3914 | { | |
3915 | gfc_expr *e; | |
3916 | e = gfc_copy_expr (c1->as->lower[i]); | |
3917 | gfc_insert_kind_parameter_exprs (e); | |
3918 | gfc_simplify_expr (e, 1); | |
3919 | gfc_free_expr (c2->as->lower[i]); | |
3920 | c2->as->lower[i] = e; | |
3921 | e = gfc_copy_expr (c1->as->upper[i]); | |
3922 | gfc_insert_kind_parameter_exprs (e); | |
3923 | gfc_simplify_expr (e, 1); | |
3924 | gfc_free_expr (c2->as->upper[i]); | |
3925 | c2->as->upper[i] = e; | |
3926 | } | |
3927 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3928 | if (c1->initializer) |
3929 | { | |
3930 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3931 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3932 | gfc_simplify_expr (c2->initializer, 1); | |
3933 | } | |
5bab4c96 PT |
3934 | } |
3935 | ||
3936 | /* Recurse into this function for PDT components. */ | |
3937 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3938 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3939 | { | |
3940 | gfc_actual_arglist *params; | |
3941 | /* The component in the template has a list of specification | |
3942 | expressions derived from its declaration. */ | |
3943 | params = gfc_copy_actual_arglist (c1->param_list); | |
3944 | actual_param = params; | |
3945 | /* Substitute the template parameters with the expressions | |
3946 | from the specification list. */ | |
3947 | for (;actual_param; actual_param = actual_param->next) | |
3948 | gfc_insert_parameter_exprs (actual_param->expr, | |
3949 | type_param_spec_list); | |
3950 | ||
3951 | /* Now obtain the PDT instance for the component. */ | |
3952 | old_param_spec_list = type_param_spec_list; | |
3953 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3954 | type_param_spec_list = old_param_spec_list; | |
3955 | ||
3956 | c2->param_list = params; | |
2fcd5884 PT |
3957 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3958 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3959 | ||
3960 | if (c2->attr.allocatable) | |
3961 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3962 | } |
3963 | } | |
3964 | ||
3965 | gfc_commit_symbol (instance); | |
3966 | if (ext_param_list) | |
3967 | *ext_param_list = type_param_spec_list; | |
3968 | *sym = instance; | |
3969 | return m; | |
18a4e7e3 PT |
3970 | |
3971 | error_return: | |
3972 | gfc_free_actual_arglist (type_param_spec_list); | |
3973 | return MATCH_ERROR; | |
5bab4c96 PT |
3974 | } |
3975 | ||
3976 | ||
e74f1cc8 JW |
3977 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3978 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3979 | IMPLICIT statements. |
3980 | ||
d51347f9 | 3981 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3982 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3983 | statement correctly. */ |
3984 | ||
e2d29968 | 3985 | match |
e74f1cc8 | 3986 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3987 | { |
3988 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3989 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3990 | match m; |
8fc541d3 | 3991 | char c; |
0fb56814 | 3992 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3993 | const char *dt_name; |
6de9cd9a | 3994 | |
5bab4c96 PT |
3995 | decl_type_param_list = NULL; |
3996 | ||
1c8bcdf7 PT |
3997 | /* A belt and braces check that the typespec is correctly being treated |
3998 | as a deferred characteristic association. */ | |
3999 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
4000 | && (gfc_current_block ()->result->ts.kind == -1) |
4001 | && (ts->kind == -1); | |
6de9cd9a | 4002 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
4003 | if (seen_deferred_kind) |
4004 | ts->kind = -1; | |
6de9cd9a | 4005 | |
a8b3b0b6 | 4006 | /* Clear the current binding label, in case one is given. */ |
62603fae | 4007 | curr_binding_label = NULL; |
a8b3b0b6 | 4008 | |
5f700e6d AL |
4009 | if (gfc_match (" byte") == MATCH_YES) |
4010 | { | |
524af0d6 | 4011 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
4012 | return MATCH_ERROR; |
4013 | ||
4014 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
4015 | { | |
4016 | gfc_error ("BYTE type used at %C " | |
4017 | "is not available on the target machine"); | |
4018 | return MATCH_ERROR; | |
4019 | } | |
d51347f9 | 4020 | |
5f700e6d AL |
4021 | ts->type = BT_INTEGER; |
4022 | ts->kind = 1; | |
4023 | return MATCH_YES; | |
4024 | } | |
4025 | ||
0fb56814 | 4026 | |
45a69325 | 4027 | m = gfc_match (" type ("); |
0fb56814 | 4028 | matched_type = (m == MATCH_YES); |
45a69325 TB |
4029 | if (matched_type) |
4030 | { | |
4031 | gfc_gobble_whitespace (); | |
4032 | if (gfc_peek_ascii_char () == '*') | |
4033 | { | |
4034 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
4035 | return m; | |
f6288c24 | 4036 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
4037 | { |
4038 | gfc_error ("Assumed type at %C is not allowed for components"); | |
4039 | return MATCH_ERROR; | |
4040 | } | |
286f737c | 4041 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
45a69325 TB |
4042 | return MATCH_ERROR; |
4043 | ts->type = BT_ASSUMED; | |
4044 | return MATCH_YES; | |
4045 | } | |
4046 | ||
4047 | m = gfc_match ("%n", name); | |
4048 | matched_type = (m == MATCH_YES); | |
4049 | } | |
4050 | ||
0fb56814 TB |
4051 | if ((matched_type && strcmp ("integer", name) == 0) |
4052 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
4053 | { |
4054 | ts->type = BT_INTEGER; | |
9d64df18 | 4055 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
4056 | goto get_kind; |
4057 | } | |
4058 | ||
0fb56814 TB |
4059 | if ((matched_type && strcmp ("character", name) == 0) |
4060 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 4061 | { |
0fb56814 | 4062 | if (matched_type |
524af0d6 JB |
4063 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4064 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4065 | return MATCH_ERROR; |
4066 | ||
6de9cd9a | 4067 | ts->type = BT_CHARACTER; |
e5ddaa24 | 4068 | if (implicit_flag == 0) |
0fb56814 | 4069 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 4070 | else |
0fb56814 TB |
4071 | m = MATCH_YES; |
4072 | ||
4073 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
4074 | m = MATCH_ERROR; | |
4075 | ||
4076 | return m; | |
6de9cd9a DN |
4077 | } |
4078 | ||
0fb56814 TB |
4079 | if ((matched_type && strcmp ("real", name) == 0) |
4080 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
4081 | { |
4082 | ts->type = BT_REAL; | |
9d64df18 | 4083 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
4084 | goto get_kind; |
4085 | } | |
4086 | ||
0fb56814 TB |
4087 | if ((matched_type |
4088 | && (strcmp ("doubleprecision", name) == 0 | |
4089 | || (strcmp ("double", name) == 0 | |
4090 | && gfc_match (" precision") == MATCH_YES))) | |
4091 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 4092 | { |
0fb56814 | 4093 | if (matched_type |
524af0d6 JB |
4094 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4095 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4096 | return MATCH_ERROR; |
4097 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4098 | return MATCH_ERROR; | |
4099 | ||
6de9cd9a | 4100 | ts->type = BT_REAL; |
9d64df18 | 4101 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4102 | return MATCH_YES; |
4103 | } | |
4104 | ||
0fb56814 TB |
4105 | if ((matched_type && strcmp ("complex", name) == 0) |
4106 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
4107 | { |
4108 | ts->type = BT_COMPLEX; | |
9d64df18 | 4109 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
4110 | goto get_kind; |
4111 | } | |
4112 | ||
0fb56814 TB |
4113 | if ((matched_type |
4114 | && (strcmp ("doublecomplex", name) == 0 | |
4115 | || (strcmp ("double", name) == 0 | |
4116 | && gfc_match (" complex") == MATCH_YES))) | |
4117 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 4118 | { |
524af0d6 | 4119 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
4120 | return MATCH_ERROR; |
4121 | ||
4122 | if (matched_type | |
524af0d6 JB |
4123 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4124 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4125 | return MATCH_ERROR; |
4126 | ||
4127 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
4128 | return MATCH_ERROR; |
4129 | ||
6de9cd9a | 4130 | ts->type = BT_COMPLEX; |
9d64df18 | 4131 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4132 | return MATCH_YES; |
4133 | } | |
4134 | ||
0fb56814 TB |
4135 | if ((matched_type && strcmp ("logical", name) == 0) |
4136 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
4137 | { |
4138 | ts->type = BT_LOGICAL; | |
9d64df18 | 4139 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
4140 | goto get_kind; |
4141 | } | |
4142 | ||
0fb56814 | 4143 | if (matched_type) |
5bab4c96 PT |
4144 | { |
4145 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4146 | if (m == MATCH_ERROR) | |
4147 | return m; | |
4148 | ||
0fb56814 | 4149 | m = gfc_match_char (')'); |
5bab4c96 | 4150 | } |
0fb56814 | 4151 | |
f6288c24 FR |
4152 | if (m != MATCH_YES) |
4153 | m = match_record_decl (name); | |
4154 | ||
4155 | if (matched_type || m == MATCH_YES) | |
4156 | { | |
4157 | ts->type = BT_DERIVED; | |
4158 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4159 | * don't need all the extra derived-type stuff for structures. */ | |
4160 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4161 | { | |
2f029c08 | 4162 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
4163 | return MATCH_ERROR; |
4164 | } | |
5bab4c96 PT |
4165 | |
4166 | if (sym && sym->attr.flavor == FL_DERIVED | |
4167 | && sym->attr.pdt_template | |
4168 | && gfc_current_state () != COMP_DERIVED) | |
4169 | { | |
4170 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4171 | if (m != MATCH_YES) | |
4172 | return m; | |
4173 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4174 | ts->u.derived = sym; | |
4175 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4176 | } | |
4177 | ||
f6288c24 FR |
4178 | if (sym && sym->attr.flavor == FL_STRUCT) |
4179 | { | |
4180 | ts->u.derived = sym; | |
4181 | return MATCH_YES; | |
4182 | } | |
4183 | /* Actually a derived type. */ | |
4184 | } | |
4185 | ||
cf2b3c22 | 4186 | else |
727e8544 | 4187 | { |
f6288c24 | 4188 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 4189 | structure declaration. */ |
f6d17ecd | 4190 | if (flag_dec_structure |
e79e6763 FR |
4191 | && (gfc_current_state () == COMP_STRUCTURE |
4192 | || gfc_current_state () == COMP_MAP)) | |
4193 | { | |
4194 | m = gfc_match (" structure"); | |
4195 | if (m == MATCH_YES) | |
4196 | { | |
4197 | m = gfc_match_structure_decl (); | |
4198 | if (m == MATCH_YES) | |
4199 | { | |
4200 | /* gfc_new_block is updated by match_structure_decl. */ | |
4201 | ts->type = BT_DERIVED; | |
4202 | ts->u.derived = gfc_new_block; | |
4203 | return MATCH_YES; | |
4204 | } | |
4205 | } | |
4206 | if (m == MATCH_ERROR) | |
4207 | return MATCH_ERROR; | |
4208 | } | |
f6288c24 | 4209 | |
528622fd JW |
4210 | /* Match CLASS declarations. */ |
4211 | m = gfc_match (" class ( * )"); | |
4212 | if (m == MATCH_ERROR) | |
4213 | return MATCH_ERROR; | |
4214 | else if (m == MATCH_YES) | |
4215 | { | |
8b704316 PT |
4216 | gfc_symbol *upe; |
4217 | gfc_symtree *st; | |
4218 | ts->type = BT_CLASS; | |
f5acf0f2 | 4219 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
4220 | if (upe == NULL) |
4221 | { | |
f5acf0f2 PT |
4222 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4223 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
4224 | st->n.sym = upe; |
4225 | gfc_set_sym_referenced (upe); | |
4226 | upe->refs++; | |
4227 | upe->ts.type = BT_VOID; | |
4228 | upe->attr.unlimited_polymorphic = 1; | |
4229 | /* This is essential to force the construction of | |
4230 | unlimited polymorphic component class containers. */ | |
4231 | upe->attr.zero_comp = 1; | |
70112e2a | 4232 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 4233 | &gfc_current_locus)) |
b93d8a3f JW |
4234 | return MATCH_ERROR; |
4235 | } | |
8b704316 PT |
4236 | else |
4237 | { | |
b93d8a3f | 4238 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
4239 | st->n.sym = upe; |
4240 | upe->refs++; | |
4241 | } | |
4242 | ts->u.derived = upe; | |
4243 | return m; | |
4244 | } | |
528622fd | 4245 | |
5bab4c96 PT |
4246 | m = gfc_match (" class ("); |
4247 | ||
4248 | if (m == MATCH_YES) | |
4249 | m = gfc_match ("%n", name); | |
4250 | else | |
4251 | return m; | |
4252 | ||
727e8544 JW |
4253 | if (m != MATCH_YES) |
4254 | return m; | |
cf2b3c22 | 4255 | ts->type = BT_CLASS; |
727e8544 | 4256 | |
524af0d6 | 4257 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 4258 | return MATCH_ERROR; |
5bab4c96 PT |
4259 | |
4260 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4261 | if (m == MATCH_ERROR) | |
4262 | return m; | |
4263 | ||
4264 | m = gfc_match_char (')'); | |
4265 | if (m != MATCH_YES) | |
4266 | return m; | |
727e8544 | 4267 | } |
6de9cd9a | 4268 | |
1c8bcdf7 PT |
4269 | /* Defer association of the derived type until the end of the |
4270 | specification block. However, if the derived type can be | |
f5acf0f2 | 4271 | found, add it to the typespec. */ |
1c8bcdf7 | 4272 | if (gfc_matching_function) |
e2d29968 | 4273 | { |
bc21d315 | 4274 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4275 | if (gfc_current_state () != COMP_INTERFACE |
4276 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4277 | { |
4278 | sym = gfc_find_dt_in_generic (sym); | |
4279 | ts->u.derived = sym; | |
4280 | } | |
e2d29968 PT |
4281 | return MATCH_YES; |
4282 | } | |
4283 | ||
4284 | /* Search for the name but allow the components to be defined later. If | |
4285 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4286 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4287 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4288 | symtree with the all lower-case name contains the associated |
4289 | generic function. */ | |
f6288c24 | 4290 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4291 | sym = NULL; |
c3f34952 TB |
4292 | dt_sym = NULL; |
4293 | if (ts->kind != -1) | |
6de9cd9a | 4294 | { |
c3f34952 TB |
4295 | gfc_get_ha_symbol (name, &sym); |
4296 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4297 | { | |
c4100eae | 4298 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4299 | return MATCH_ERROR; |
4300 | } | |
4301 | if (sym->generic && !dt_sym) | |
4302 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4303 | |
4304 | /* Host associated PDTs can get confused with their constructors | |
4305 | because they ar instantiated in the template's namespace. */ | |
4306 | if (!dt_sym) | |
4307 | { | |
4308 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4309 | { | |
4310 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4311 | return MATCH_ERROR; | |
4312 | } | |
4313 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4314 | dt_sym = NULL; | |
4315 | } | |
6de9cd9a | 4316 | } |
e2d29968 PT |
4317 | else if (ts->kind == -1) |
4318 | { | |
1c8bcdf7 PT |
4319 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4320 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4321 | gfc_find_symbol (name, NULL, iface, &sym); |
4322 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4323 | { |
c4100eae | 4324 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4325 | return MATCH_ERROR; |
4326 | } | |
c3f34952 TB |
4327 | if (sym && sym->generic && !dt_sym) |
4328 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4329 | |
1c8bcdf7 | 4330 | ts->kind = 0; |
e2d29968 PT |
4331 | if (sym == NULL) |
4332 | return MATCH_NO; | |
4333 | } | |
6de9cd9a | 4334 | |
f6288c24 | 4335 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4336 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4337 | || sym->attr.subroutine) | |
4338 | { | |
fea70c99 MLI |
4339 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4340 | "entity at %L, which has the same name", name, | |
4341 | &sym->declared_at); | |
c3f34952 TB |
4342 | return MATCH_ERROR; |
4343 | } | |
6de9cd9a | 4344 | |
5bab4c96 PT |
4345 | if (sym && sym->attr.flavor == FL_DERIVED |
4346 | && sym->attr.pdt_template | |
4347 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4348 | { |
4349 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4350 | if (m != MATCH_YES) | |
4351 | return m; | |
4352 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4353 | ts->u.derived = sym; | |
4354 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4355 | } | |
5bab4c96 | 4356 | |
44c57c2f | 4357 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4358 | gfc_set_sym_referenced (sym); |
c3f34952 | 4359 | if (!sym->attr.generic |
524af0d6 | 4360 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4361 | return MATCH_ERROR; |
4362 | ||
4363 | if (!sym->attr.function | |
524af0d6 | 4364 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4365 | return MATCH_ERROR; |
4366 | ||
5bab4c96 PT |
4367 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4368 | && dt_sym->attr.pdt_template | |
4369 | && gfc_current_state () != COMP_DERIVED) | |
4370 | { | |
4371 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4372 | if (m != MATCH_YES) | |
4373 | return m; | |
4374 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4375 | } | |
4376 | ||
c3f34952 TB |
4377 | if (!dt_sym) |
4378 | { | |
4379 | gfc_interface *intr, *head; | |
4380 | ||
4381 | /* Use upper case to save the actual derived-type symbol. */ | |
4382 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4383 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4384 | head = sym->generic; |
4385 | intr = gfc_get_interface (); | |
4386 | intr->sym = dt_sym; | |
4387 | intr->where = gfc_current_locus; | |
4388 | intr->next = head; | |
4389 | sym->generic = intr; | |
4390 | sym->attr.if_source = IFSRC_DECL; | |
4391 | } | |
44c57c2f MM |
4392 | else |
4393 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4394 | |
4395 | gfc_set_sym_referenced (dt_sym); | |
4396 | ||
f6288c24 | 4397 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4398 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4399 | return MATCH_ERROR; |
4400 | ||
4401 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4402 | |
4403 | return MATCH_YES; | |
4404 | ||
4405 | get_kind: | |
0fb56814 | 4406 | if (matched_type |
524af0d6 JB |
4407 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4408 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4409 | return MATCH_ERROR; |
4410 | ||
6de9cd9a DN |
4411 | /* For all types except double, derived and character, look for an |
4412 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4413 | if (implicit_flag == 1) |
0fb56814 TB |
4414 | { |
4415 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4416 | return MATCH_ERROR; | |
4417 | ||
4418 | return MATCH_YES; | |
4419 | } | |
6de9cd9a | 4420 | |
0ff0dfbf TS |
4421 | if (gfc_current_form == FORM_FREE) |
4422 | { | |
0b3624f6 SK |
4423 | c = gfc_peek_ascii_char (); |
4424 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4425 | && c != ':' && c != ',') |
0fb56814 TB |
4426 | { |
4427 | if (matched_type && c == ')') | |
4428 | { | |
4429 | gfc_next_ascii_char (); | |
4430 | return MATCH_YES; | |
4431 | } | |
4432 | return MATCH_NO; | |
4433 | } | |
0ff0dfbf TS |
4434 | } |
4435 | ||
e2d29968 | 4436 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4437 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4438 | { |
4439 | m = gfc_match_old_kind_spec (ts); | |
4440 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4441 | return MATCH_ERROR; | |
4442 | } | |
6de9cd9a | 4443 | |
0fb56814 TB |
4444 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4445 | return MATCH_ERROR; | |
4446 | ||
1c8bcdf7 PT |
4447 | /* Defer association of the KIND expression of function results |
4448 | until after USE and IMPORT statements. */ | |
4449 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4450 | || gfc_matching_function) | |
4451 | return MATCH_YES; | |
4452 | ||
6de9cd9a DN |
4453 | if (m == MATCH_NO) |
4454 | m = MATCH_YES; /* No kind specifier found. */ | |
4455 | ||
4456 | return m; | |
4457 | } | |
4458 | ||
4459 | ||
e5ddaa24 TS |
4460 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4461 | already matched in parse.c, or we would not end up here in the | |
4462 | first place. So the only thing we need to check, is if there is | |
4463 | trailing garbage. If not, the match is successful. */ | |
4464 | ||
4465 | match | |
4466 | gfc_match_implicit_none (void) | |
4467 | { | |
8b7a967e TB |
4468 | char c; |
4469 | match m; | |
4470 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4471 | bool type = false; | |
4472 | bool external = false; | |
a6c63173 TB |
4473 | locus cur_loc = gfc_current_locus; |
4474 | ||
4475 | if (gfc_current_ns->seen_implicit_none | |
4476 | || gfc_current_ns->has_implicit_none_export) | |
4477 | { | |
4478 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4479 | return MATCH_ERROR; | |
4480 | } | |
8b7a967e TB |
4481 | |
4482 | gfc_gobble_whitespace (); | |
4483 | c = gfc_peek_ascii_char (); | |
4484 | if (c == '(') | |
4485 | { | |
4486 | (void) gfc_next_ascii_char (); | |
8179b067 | 4487 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4488 | return MATCH_ERROR; |
a6c63173 TB |
4489 | |
4490 | gfc_gobble_whitespace (); | |
4491 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4492 | { |
a6c63173 TB |
4493 | (void) gfc_next_ascii_char (); |
4494 | type = true; | |
4495 | } | |
4496 | else | |
4497 | for(;;) | |
4498 | { | |
4499 | m = gfc_match (" %n", name); | |
4500 | if (m != MATCH_YES) | |
4501 | return MATCH_ERROR; | |
8b7a967e | 4502 | |
a6c63173 TB |
4503 | if (strcmp (name, "type") == 0) |
4504 | type = true; | |
4505 | else if (strcmp (name, "external") == 0) | |
4506 | external = true; | |
4507 | else | |
4508 | return MATCH_ERROR; | |
8b7a967e | 4509 | |
a6c63173 TB |
4510 | gfc_gobble_whitespace (); |
4511 | c = gfc_next_ascii_char (); | |
4512 | if (c == ',') | |
4513 | continue; | |
4514 | if (c == ')') | |
4515 | break; | |
4516 | return MATCH_ERROR; | |
4517 | } | |
8b7a967e TB |
4518 | } |
4519 | else | |
4520 | type = true; | |
4521 | ||
4522 | if (gfc_match_eos () != MATCH_YES) | |
4523 | return MATCH_ERROR; | |
4524 | ||
a6c63173 | 4525 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4526 | |
4527 | return MATCH_YES; | |
e5ddaa24 TS |
4528 | } |
4529 | ||
4530 | ||
4531 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4532 | ||
4533 | static match | |
1107b970 | 4534 | match_implicit_range (void) |
e5ddaa24 | 4535 | { |
8fc541d3 FXC |
4536 | char c, c1, c2; |
4537 | int inner; | |
e5ddaa24 TS |
4538 | locus cur_loc; |
4539 | ||
4540 | cur_loc = gfc_current_locus; | |
4541 | ||
4542 | gfc_gobble_whitespace (); | |
8fc541d3 | 4543 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4544 | if (c != '(') |
4545 | { | |
4546 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4547 | goto bad; | |
4548 | } | |
4549 | ||
4550 | inner = 1; | |
4551 | while (inner) | |
4552 | { | |
4553 | gfc_gobble_whitespace (); | |
8fc541d3 | 4554 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4555 | if (!ISALPHA (c1)) |
4556 | goto bad; | |
4557 | ||
4558 | gfc_gobble_whitespace (); | |
8fc541d3 | 4559 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4560 | |
4561 | switch (c) | |
4562 | { | |
4563 | case ')': | |
66e4ab31 | 4564 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4565 | |
4566 | case ',': | |
4567 | c2 = c1; | |
4568 | break; | |
4569 | ||
4570 | case '-': | |
4571 | gfc_gobble_whitespace (); | |
8fc541d3 | 4572 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4573 | if (!ISALPHA (c2)) |
4574 | goto bad; | |
4575 | ||
4576 | gfc_gobble_whitespace (); | |
8fc541d3 | 4577 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4578 | |
4579 | if ((c != ',') && (c != ')')) | |
4580 | goto bad; | |
4581 | if (c == ')') | |
4582 | inner = 0; | |
4583 | ||
4584 | break; | |
4585 | ||
4586 | default: | |
4587 | goto bad; | |
4588 | } | |
4589 | ||
4590 | if (c1 > c2) | |
4591 | { | |
4592 | gfc_error ("Letters must be in alphabetic order in " | |
4593 | "IMPLICIT statement at %C"); | |
4594 | goto bad; | |
4595 | } | |
4596 | ||
4597 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4598 | implicits from this IMPLICIT statement. We do not check for |
4599 | conflicts with whatever earlier IMPLICIT statements may have | |
4600 | set. This is done when we've successfully finished matching | |
4601 | the current one. */ | |
524af0d6 | 4602 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4603 | goto bad; |
4604 | } | |
4605 | ||
4606 | return MATCH_YES; | |
4607 | ||
4608 | bad: | |
4609 | gfc_syntax_error (ST_IMPLICIT); | |
4610 | ||
4611 | gfc_current_locus = cur_loc; | |
4612 | return MATCH_ERROR; | |
4613 | } | |
4614 | ||
4615 | ||
4616 | /* Match an IMPLICIT statement, storing the types for | |
4617 | gfc_set_implicit() if the statement is accepted by the parser. | |
4618 | There is a strange looking, but legal syntactic construction | |
4619 | possible. It looks like: | |
4620 | ||
4621 | IMPLICIT INTEGER (a-b) (c-d) | |
4622 | ||
4623 | This is legal if "a-b" is a constant expression that happens to | |
4624 | equal one of the legal kinds for integers. The real problem | |
4625 | happens with an implicit specification that looks like: | |
4626 | ||
4627 | IMPLICIT INTEGER (a-b) | |
4628 | ||
4629 | In this case, a typespec matcher that is "greedy" (as most of the | |
4630 | matchers are) gobbles the character range as a kindspec, leaving | |
4631 | nothing left. We therefore have to go a bit more slowly in the | |
4632 | matching process by inhibiting the kindspec checking during | |
4633 | typespec matching and checking for a kind later. */ | |
4634 | ||
4635 | match | |
4636 | gfc_match_implicit (void) | |
4637 | { | |
4638 | gfc_typespec ts; | |
4639 | locus cur_loc; | |
8fc541d3 | 4640 | char c; |
e5ddaa24 TS |
4641 | match m; |
4642 | ||
8b7a967e TB |
4643 | if (gfc_current_ns->seen_implicit_none) |
4644 | { | |
4645 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4646 | "statement"); | |
4647 | return MATCH_ERROR; | |
4648 | } | |
4649 | ||
44000dbb JD |
4650 | gfc_clear_ts (&ts); |
4651 | ||
e5ddaa24 TS |
4652 | /* We don't allow empty implicit statements. */ |
4653 | if (gfc_match_eos () == MATCH_YES) | |
4654 | { | |
4655 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4656 | return MATCH_ERROR; | |
4657 | } | |
4658 | ||
e5ddaa24 TS |
4659 | do |
4660 | { | |
1107b970 PB |
4661 | /* First cleanup. */ |
4662 | gfc_clear_new_implicit (); | |
4663 | ||
e5ddaa24 | 4664 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4665 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4666 | if (m == MATCH_ERROR) |
4667 | goto error; | |
4668 | if (m == MATCH_NO) | |
4669 | goto syntax; | |
4670 | ||
4671 | cur_loc = gfc_current_locus; | |
1107b970 | 4672 | m = match_implicit_range (); |
e5ddaa24 TS |
4673 | |
4674 | if (m == MATCH_YES) | |
4675 | { | |
1107b970 | 4676 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4677 | gfc_gobble_whitespace (); |
a6c63173 TB |
4678 | c = gfc_peek_ascii_char (); |
4679 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4680 | { |
4681 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4682 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4683 | { |
9d64df18 | 4684 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4685 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4686 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4687 | NULL, 1); |
1107b970 PB |
4688 | } |
4689 | ||
4690 | /* Record the Successful match. */ | |
524af0d6 | 4691 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4692 | return MATCH_ERROR; |
a6c63173 TB |
4693 | if (c == ',') |
4694 | c = gfc_next_ascii_char (); | |
4695 | else if (gfc_match_eos () == MATCH_ERROR) | |
4696 | goto error; | |
1107b970 PB |
4697 | continue; |
4698 | } | |
e5ddaa24 TS |
4699 | |
4700 | gfc_current_locus = cur_loc; | |
4701 | } | |
4702 | ||
1107b970 PB |
4703 | /* Discard the (incorrectly) matched range. */ |
4704 | gfc_clear_new_implicit (); | |
4705 | ||
4706 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4707 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4708 | m = gfc_match_char_spec (&ts); |
1107b970 | 4709 | else |
e5ddaa24 | 4710 | { |
e2d29968 | 4711 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4712 | if (m == MATCH_NO) |
1107b970 PB |
4713 | { |
4714 | m = gfc_match_old_kind_spec (&ts); | |
4715 | if (m == MATCH_ERROR) | |
4716 | goto error; | |
4717 | if (m == MATCH_NO) | |
4718 | goto syntax; | |
4719 | } | |
e5ddaa24 | 4720 | } |
1107b970 PB |
4721 | if (m == MATCH_ERROR) |
4722 | goto error; | |
e5ddaa24 | 4723 | |
1107b970 | 4724 | m = match_implicit_range (); |
e5ddaa24 TS |
4725 | if (m == MATCH_ERROR) |
4726 | goto error; | |
4727 | if (m == MATCH_NO) | |
4728 | goto syntax; | |
4729 | ||
4730 | gfc_gobble_whitespace (); | |
8fc541d3 | 4731 | c = gfc_next_ascii_char (); |
a6c63173 | 4732 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4733 | goto syntax; |
4734 | ||
524af0d6 | 4735 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4736 | return MATCH_ERROR; |
e5ddaa24 TS |
4737 | } |
4738 | while (c == ','); | |
4739 | ||
1107b970 | 4740 | return MATCH_YES; |
e5ddaa24 TS |
4741 | |
4742 | syntax: | |
4743 | gfc_syntax_error (ST_IMPLICIT); | |
4744 | ||
4745 | error: | |
4746 | return MATCH_ERROR; | |
4747 | } | |
4748 | ||
66e4ab31 | 4749 | |
8998be20 TB |
4750 | match |
4751 | gfc_match_import (void) | |
4752 | { | |
4753 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4754 | match m; | |
4755 | gfc_symbol *sym; | |
4756 | gfc_symtree *st; | |
4757 | ||
66e4ab31 SK |
4758 | if (gfc_current_ns->proc_name == NULL |
4759 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4760 | { |
4761 | gfc_error ("IMPORT statement at %C only permitted in " | |
4762 | "an INTERFACE body"); | |
4763 | return MATCH_ERROR; | |
4764 | } | |
4765 | ||
4668d6f9 PT |
4766 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4767 | { | |
4768 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4769 | "in a module procedure interface body"); | |
4770 | return MATCH_ERROR; | |
4771 | } | |
4772 | ||
524af0d6 | 4773 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4774 | return MATCH_ERROR; |
4775 | ||
4776 | if (gfc_match_eos () == MATCH_YES) | |
4777 | { | |
4778 | /* All host variables should be imported. */ | |
4779 | gfc_current_ns->has_import_set = 1; | |
4780 | return MATCH_YES; | |
4781 | } | |
4782 | ||
4783 | if (gfc_match (" ::") == MATCH_YES) | |
4784 | { | |
4785 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4786 | { |
4787 | gfc_error ("Expecting list of named entities at %C"); | |
4788 | return MATCH_ERROR; | |
4789 | } | |
8998be20 TB |
4790 | } |
4791 | ||
4792 | for(;;) | |
4793 | { | |
2e8d9212 | 4794 | sym = NULL; |
8998be20 TB |
4795 | m = gfc_match (" %n", name); |
4796 | switch (m) | |
4797 | { | |
4798 | case MATCH_YES: | |
36d3fb4c | 4799 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4800 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4801 | { |
c4100eae | 4802 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4803 | return MATCH_ERROR; |
4804 | } | |
4e2cf5f5 | 4805 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4806 | && gfc_find_symbol (name, |
4807 | gfc_current_ns->proc_name->ns->parent, | |
4808 | 1, &sym)) | |
636dff67 | 4809 | { |
c4100eae | 4810 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4811 | return MATCH_ERROR; |
4812 | } | |
4813 | ||
4814 | if (sym == NULL) | |
4815 | { | |
c4100eae | 4816 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4817 | "at %C - does not exist.", name); |
4818 | return MATCH_ERROR; | |
4819 | } | |
4820 | ||
dd8b9dde | 4821 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4822 | { |
db30e21c | 4823 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4824 | "at %C", name); |
636dff67 SK |
4825 | goto next_item; |
4826 | } | |
4827 | ||
dd8b9dde | 4828 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4829 | st->n.sym = sym; |
4830 | sym->refs++; | |
5a8af0b4 | 4831 | sym->attr.imported = 1; |
8998be20 | 4832 | |
c3f34952 TB |
4833 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4834 | { | |
4835 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4836 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4837 | lower-case name contains the associated generic function. */ |
c3f34952 | 4838 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4839 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4840 | st->n.sym = sym; |
4841 | sym->refs++; | |
4842 | sym->attr.imported = 1; | |
4843 | } | |
4844 | ||
8998be20 TB |
4845 | goto next_item; |
4846 | ||
4847 | case MATCH_NO: | |
4848 | break; | |
4849 | ||
4850 | case MATCH_ERROR: | |
4851 | return MATCH_ERROR; | |
4852 | } | |
4853 | ||
4854 | next_item: | |
4855 | if (gfc_match_eos () == MATCH_YES) | |
4856 | break; | |
4857 | if (gfc_match_char (',') != MATCH_YES) | |
4858 | goto syntax; | |
4859 | } | |
4860 | ||
4861 | return MATCH_YES; | |
4862 | ||
4863 | syntax: | |
4864 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4865 | return MATCH_ERROR; | |
4866 | } | |
e5ddaa24 | 4867 | |
66e4ab31 | 4868 | |
f2449db4 RS |
4869 | /* A minimal implementation of gfc_match without whitespace, escape |
4870 | characters or variable arguments. Returns true if the next | |
4871 | characters match the TARGET template exactly. */ | |
4872 | ||
4873 | static bool | |
4874 | match_string_p (const char *target) | |
4875 | { | |
4876 | const char *p; | |
4877 | ||
4878 | for (p = target; *p; p++) | |
8fc541d3 | 4879 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4880 | return false; |
4881 | return true; | |
4882 | } | |
4883 | ||
6de9cd9a DN |
4884 | /* Matches an attribute specification including array specs. If |
4885 | successful, leaves the variables current_attr and current_as | |
4886 | holding the specification. Also sets the colon_seen variable for | |
4887 | later use by matchers associated with initializations. | |
4888 | ||
4889 | This subroutine is a little tricky in the sense that we don't know | |
4890 | if we really have an attr-spec until we hit the double colon. | |
4891 | Until that time, we can only return MATCH_NO. This forces us to | |
4892 | check for duplicate specification at this level. */ | |
4893 | ||
4894 | static match | |
4895 | match_attr_spec (void) | |
4896 | { | |
6de9cd9a | 4897 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4898 | enum |
ea20e8be JW |
4899 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4900 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4901 | DECL_DIMENSION, DECL_EXTERNAL, | |
4902 | DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4903 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4904 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4905 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4906 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4907 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4908 | }; |
6de9cd9a DN |
4909 | |
4910 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4911 | #define NUM_DECL GFC_DECL_END | |
4912 | ||
ea20e8be JW |
4913 | /* Make sure that values from sym_intent are safe to be used here. */ |
4914 | gcc_assert (INTENT_IN > 0); | |
4915 | ||
6de9cd9a DN |
4916 | locus start, seen_at[NUM_DECL]; |
4917 | int seen[NUM_DECL]; | |
09639a83 | 4918 | unsigned int d; |
6de9cd9a DN |
4919 | const char *attr; |
4920 | match m; | |
524af0d6 | 4921 | bool t; |
6de9cd9a DN |
4922 | |
4923 | gfc_clear_attr (¤t_attr); | |
63645982 | 4924 | start = gfc_current_locus; |
6de9cd9a DN |
4925 | |
4926 | current_as = NULL; | |
4927 | colon_seen = 0; | |
6f855a26 | 4928 | attr_seen = 0; |
6de9cd9a DN |
4929 | |
4930 | /* See if we get all of the keywords up to the final double colon. */ | |
4931 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4932 | seen[d] = 0; | |
4933 | ||
4934 | for (;;) | |
4935 | { | |
8fc541d3 | 4936 | char ch; |
a8b3b0b6 | 4937 | |
f2449db4 RS |
4938 | d = DECL_NONE; |
4939 | gfc_gobble_whitespace (); | |
4940 | ||
8fc541d3 | 4941 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4942 | if (ch == ':') |
4943 | { | |
4944 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4945 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4946 | break; |
4947 | } | |
4948 | else if (ch == ',') | |
a8b3b0b6 | 4949 | { |
a8b3b0b6 | 4950 | gfc_gobble_whitespace (); |
8fc541d3 | 4951 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4952 | { |
f2449db4 | 4953 | case 'a': |
1eee5628 TB |
4954 | gfc_next_ascii_char (); |
4955 | switch (gfc_next_ascii_char ()) | |
4956 | { | |
4957 | case 'l': | |
4958 | if (match_string_p ("locatable")) | |
4959 | { | |
4960 | /* Matched "allocatable". */ | |
4961 | d = DECL_ALLOCATABLE; | |
4962 | } | |
4963 | break; | |
4964 | ||
4965 | case 's': | |
4966 | if (match_string_p ("ynchronous")) | |
4967 | { | |
4968 | /* Matched "asynchronous". */ | |
4969 | d = DECL_ASYNCHRONOUS; | |
4970 | } | |
4971 | break; | |
34d567d1 FR |
4972 | |
4973 | case 'u': | |
4974 | if (match_string_p ("tomatic")) | |
4975 | { | |
4976 | /* Matched "automatic". */ | |
4977 | d = DECL_AUTOMATIC; | |
4978 | } | |
4979 | break; | |
1eee5628 | 4980 | } |
fe4e525c | 4981 | break; |
f2449db4 RS |
4982 | |
4983 | case 'b': | |
a8b3b0b6 | 4984 | /* Try and match the bind(c). */ |
1eabf70a | 4985 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4986 | if (m == MATCH_YES) |
a8b3b0b6 | 4987 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4988 | else if (m == MATCH_ERROR) |
4989 | goto cleanup; | |
f2449db4 RS |
4990 | break; |
4991 | ||
be59db2d | 4992 | case 'c': |
fe4e525c TB |
4993 | gfc_next_ascii_char (); |
4994 | if ('o' != gfc_next_ascii_char ()) | |
4995 | break; | |
4996 | switch (gfc_next_ascii_char ()) | |
4997 | { | |
4998 | case 'd': | |
4999 | if (match_string_p ("imension")) | |
5000 | { | |
5001 | d = DECL_CODIMENSION; | |
5002 | break; | |
5003 | } | |
191816a3 | 5004 | /* FALLTHRU */ |
fe4e525c TB |
5005 | case 'n': |
5006 | if (match_string_p ("tiguous")) | |
5007 | { | |
5008 | d = DECL_CONTIGUOUS; | |
5009 | break; | |
5010 | } | |
5011 | } | |
be59db2d TB |
5012 | break; |
5013 | ||
f2449db4 RS |
5014 | case 'd': |
5015 | if (match_string_p ("dimension")) | |
5016 | d = DECL_DIMENSION; | |
5017 | break; | |
5018 | ||
5019 | case 'e': | |
5020 | if (match_string_p ("external")) | |
5021 | d = DECL_EXTERNAL; | |
5022 | break; | |
5023 | ||
5024 | case 'i': | |
5025 | if (match_string_p ("int")) | |
5026 | { | |
8fc541d3 | 5027 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5028 | if (ch == 'e') |
5029 | { | |
5030 | if (match_string_p ("nt")) | |
5031 | { | |
5032 | /* Matched "intent". */ | |
ea20e8be JW |
5033 | d = match_intent_spec (); |
5034 | if (d == INTENT_UNKNOWN) | |
5035 | { | |
5036 | m = MATCH_ERROR; | |
5037 | goto cleanup; | |
5038 | } | |
f2449db4 RS |
5039 | } |
5040 | } | |
5041 | else if (ch == 'r') | |
5042 | { | |
5043 | if (match_string_p ("insic")) | |
5044 | { | |
5045 | /* Matched "intrinsic". */ | |
5046 | d = DECL_INTRINSIC; | |
5047 | } | |
5048 | } | |
5049 | } | |
5050 | break; | |
5051 | ||
5bab4c96 PT |
5052 | case 'k': |
5053 | if (match_string_p ("kind")) | |
5054 | d = DECL_KIND; | |
5055 | break; | |
5056 | ||
5057 | case 'l': | |
5058 | if (match_string_p ("len")) | |
5059 | d = DECL_LEN; | |
5060 | break; | |
5061 | ||
f2449db4 RS |
5062 | case 'o': |
5063 | if (match_string_p ("optional")) | |
5064 | d = DECL_OPTIONAL; | |
5065 | break; | |
5066 | ||
5067 | case 'p': | |
8fc541d3 FXC |
5068 | gfc_next_ascii_char (); |
5069 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
5070 | { |
5071 | case 'a': | |
5072 | if (match_string_p ("rameter")) | |
5073 | { | |
5074 | /* Matched "parameter". */ | |
5075 | d = DECL_PARAMETER; | |
5076 | } | |
5077 | break; | |
5078 | ||
5079 | case 'o': | |
5080 | if (match_string_p ("inter")) | |
5081 | { | |
5082 | /* Matched "pointer". */ | |
5083 | d = DECL_POINTER; | |
5084 | } | |
5085 | break; | |
5086 | ||
5087 | case 'r': | |
8fc541d3 | 5088 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5089 | if (ch == 'i') |
5090 | { | |
5091 | if (match_string_p ("vate")) | |
5092 | { | |
5093 | /* Matched "private". */ | |
5094 | d = DECL_PRIVATE; | |
5095 | } | |
5096 | } | |
5097 | else if (ch == 'o') | |
5098 | { | |
5099 | if (match_string_p ("tected")) | |
5100 | { | |
5101 | /* Matched "protected". */ | |
5102 | d = DECL_PROTECTED; | |
5103 | } | |
5104 | } | |
5105 | break; | |
5106 | ||
5107 | case 'u': | |
5108 | if (match_string_p ("blic")) | |
5109 | { | |
5110 | /* Matched "public". */ | |
5111 | d = DECL_PUBLIC; | |
5112 | } | |
5113 | break; | |
5114 | } | |
5115 | break; | |
5116 | ||
5117 | case 's': | |
34d567d1 FR |
5118 | gfc_next_ascii_char (); |
5119 | switch (gfc_next_ascii_char ()) | |
5120 | { | |
5121 | case 'a': | |
5122 | if (match_string_p ("ve")) | |
5123 | { | |
5124 | /* Matched "save". */ | |
5125 | d = DECL_SAVE; | |
5126 | } | |
5127 | break; | |
5128 | ||
5129 | case 't': | |
5130 | if (match_string_p ("atic")) | |
5131 | { | |
5132 | /* Matched "static". */ | |
5133 | d = DECL_STATIC; | |
5134 | } | |
5135 | break; | |
5136 | } | |
f2449db4 RS |
5137 | break; |
5138 | ||
5139 | case 't': | |
5140 | if (match_string_p ("target")) | |
5141 | d = DECL_TARGET; | |
5142 | break; | |
5143 | ||
5144 | case 'v': | |
8fc541d3 FXC |
5145 | gfc_next_ascii_char (); |
5146 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
5147 | if (ch == 'a') |
5148 | { | |
5149 | if (match_string_p ("lue")) | |
5150 | { | |
5151 | /* Matched "value". */ | |
5152 | d = DECL_VALUE; | |
5153 | } | |
5154 | } | |
5155 | else if (ch == 'o') | |
5156 | { | |
5157 | if (match_string_p ("latile")) | |
5158 | { | |
5159 | /* Matched "volatile". */ | |
5160 | d = DECL_VOLATILE; | |
5161 | } | |
5162 | } | |
5163 | break; | |
a8b3b0b6 CR |
5164 | } |
5165 | } | |
d468bcdb | 5166 | |
f2449db4 RS |
5167 | /* No double colon and no recognizable decl_type, so assume that |
5168 | we've been looking at something else the whole time. */ | |
5169 | if (d == DECL_NONE) | |
5170 | { | |
5171 | m = MATCH_NO; | |
5172 | goto cleanup; | |
5173 | } | |
d51347f9 | 5174 | |
acb388a0 JD |
5175 | /* Check to make sure any parens are paired up correctly. */ |
5176 | if (gfc_match_parens () == MATCH_ERROR) | |
5177 | { | |
5178 | m = MATCH_ERROR; | |
5179 | goto cleanup; | |
5180 | } | |
5181 | ||
6de9cd9a | 5182 | seen[d]++; |
63645982 | 5183 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 5184 | |
d3a9eea2 | 5185 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 5186 | { |
d3a9eea2 | 5187 | gfc_array_spec *as = NULL; |
6de9cd9a | 5188 | |
d3a9eea2 TB |
5189 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5190 | d == DECL_CODIMENSION); | |
5191 | ||
5192 | if (current_as == NULL) | |
5193 | current_as = as; | |
5194 | else if (m == MATCH_YES) | |
6de9cd9a | 5195 | { |
524af0d6 | 5196 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 5197 | m = MATCH_ERROR; |
cede9502 | 5198 | free (as); |
6de9cd9a DN |
5199 | } |
5200 | ||
be59db2d TB |
5201 | if (m == MATCH_NO) |
5202 | { | |
d3a9eea2 TB |
5203 | if (d == DECL_CODIMENSION) |
5204 | gfc_error ("Missing codimension specification at %C"); | |
5205 | else | |
5206 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
5207 | m = MATCH_ERROR; |
5208 | } | |
5209 | ||
5210 | if (m == MATCH_ERROR) | |
5211 | goto cleanup; | |
5212 | } | |
6de9cd9a DN |
5213 | } |
5214 | ||
6de9cd9a DN |
5215 | /* Since we've seen a double colon, we have to be looking at an |
5216 | attr-spec. This means that we can now issue errors. */ | |
5217 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5218 | if (seen[d] > 1) | |
5219 | { | |
5220 | switch (d) | |
5221 | { | |
5222 | case DECL_ALLOCATABLE: | |
5223 | attr = "ALLOCATABLE"; | |
5224 | break; | |
1eee5628 TB |
5225 | case DECL_ASYNCHRONOUS: |
5226 | attr = "ASYNCHRONOUS"; | |
5227 | break; | |
be59db2d TB |
5228 | case DECL_CODIMENSION: |
5229 | attr = "CODIMENSION"; | |
5230 | break; | |
fe4e525c TB |
5231 | case DECL_CONTIGUOUS: |
5232 | attr = "CONTIGUOUS"; | |
5233 | break; | |
6de9cd9a DN |
5234 | case DECL_DIMENSION: |
5235 | attr = "DIMENSION"; | |
5236 | break; | |
5237 | case DECL_EXTERNAL: | |
5238 | attr = "EXTERNAL"; | |
5239 | break; | |
5240 | case DECL_IN: | |
5241 | attr = "INTENT (IN)"; | |
5242 | break; | |
5243 | case DECL_OUT: | |
5244 | attr = "INTENT (OUT)"; | |
5245 | break; | |
5246 | case DECL_INOUT: | |
5247 | attr = "INTENT (IN OUT)"; | |
5248 | break; | |
5249 | case DECL_INTRINSIC: | |
5250 | attr = "INTRINSIC"; | |
5251 | break; | |
5252 | case DECL_OPTIONAL: | |
5253 | attr = "OPTIONAL"; | |
5254 | break; | |
5bab4c96 PT |
5255 | case DECL_KIND: |
5256 | attr = "KIND"; | |
5257 | break; | |
5258 | case DECL_LEN: | |
5259 | attr = "LEN"; | |
5260 | break; | |
6de9cd9a DN |
5261 | case DECL_PARAMETER: |
5262 | attr = "PARAMETER"; | |
5263 | break; | |
5264 | case DECL_POINTER: | |
5265 | attr = "POINTER"; | |
5266 | break; | |
ee7e677f TB |
5267 | case DECL_PROTECTED: |
5268 | attr = "PROTECTED"; | |
5269 | break; | |
6de9cd9a DN |
5270 | case DECL_PRIVATE: |
5271 | attr = "PRIVATE"; | |
5272 | break; | |
5273 | case DECL_PUBLIC: | |
5274 | attr = "PUBLIC"; | |
5275 | break; | |
5276 | case DECL_SAVE: | |
5277 | attr = "SAVE"; | |
5278 | break; | |
34d567d1 FR |
5279 | case DECL_STATIC: |
5280 | attr = "STATIC"; | |
5281 | break; | |
5282 | case DECL_AUTOMATIC: | |
5283 | attr = "AUTOMATIC"; | |
5284 | break; | |
6de9cd9a DN |
5285 | case DECL_TARGET: |
5286 | attr = "TARGET"; | |
5287 | break; | |
a8b3b0b6 CR |
5288 | case DECL_IS_BIND_C: |
5289 | attr = "IS_BIND_C"; | |
5290 | break; | |
5291 | case DECL_VALUE: | |
5292 | attr = "VALUE"; | |
5293 | break; | |
775e6c3a TB |
5294 | case DECL_VOLATILE: |
5295 | attr = "VOLATILE"; | |
5296 | break; | |
6de9cd9a | 5297 | default: |
66e4ab31 | 5298 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5299 | } |
5300 | ||
5301 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5302 | m = MATCH_ERROR; | |
5303 | goto cleanup; | |
5304 | } | |
5305 | ||
5306 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5307 | to the current attribute. */ | |
5308 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5309 | { | |
5310 | if (seen[d] == 0) | |
5311 | continue; | |
6f855a26 FR |
5312 | else |
5313 | attr_seen = 1; | |
6de9cd9a | 5314 | |
34d567d1 FR |
5315 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5316 | && !flag_dec_static) | |
5317 | { | |
cf004230 FR |
5318 | gfc_error ("%s at %L is a DEC extension, enable with " |
5319 | "%<-fdec-static%>", | |
34d567d1 FR |
5320 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5321 | m = MATCH_ERROR; | |
5322 | goto cleanup; | |
5323 | } | |
5324 | /* Allow SAVE with STATIC, but don't complain. */ | |
5325 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5326 | continue; | |
5327 | ||
6de9cd9a | 5328 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
5329 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5330 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5331 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5332 | { |
5046aff5 PT |
5333 | if (d == DECL_ALLOCATABLE) |
5334 | { | |
524af0d6 JB |
5335 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5336 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
5337 | { |
5338 | m = MATCH_ERROR; | |
5339 | goto cleanup; | |
5340 | } | |
636dff67 | 5341 | } |
5bab4c96 PT |
5342 | else if (d == DECL_KIND) |
5343 | { | |
5344 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5345 | "attribute at %C in a TYPE definition")) | |
5346 | { | |
5347 | m = MATCH_ERROR; | |
5348 | goto cleanup; | |
5349 | } | |
5350 | if (current_ts.type != BT_INTEGER) | |
5351 | { | |
5352 | gfc_error ("Component with KIND attribute at %C must be " | |
5353 | "INTEGER"); | |
5354 | m = MATCH_ERROR; | |
5355 | goto cleanup; | |
5356 | } | |
5357 | if (current_ts.kind != gfc_default_integer_kind) | |
5358 | { | |
5359 | gfc_error ("Component with KIND attribute at %C must be " | |
5360 | "default integer kind (%d)", | |
5361 | gfc_default_integer_kind); | |
5362 | m = MATCH_ERROR; | |
5363 | goto cleanup; | |
5364 | } | |
5365 | } | |
5366 | else if (d == DECL_LEN) | |
5367 | { | |
5368 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5369 | "attribute at %C in a TYPE definition")) | |
5370 | { | |
5371 | m = MATCH_ERROR; | |
5372 | goto cleanup; | |
5373 | } | |
5374 | if (current_ts.type != BT_INTEGER) | |
5375 | { | |
5376 | gfc_error ("Component with LEN attribute at %C must be " | |
5377 | "INTEGER"); | |
5378 | m = MATCH_ERROR; | |
5379 | goto cleanup; | |
5380 | } | |
5381 | if (current_ts.kind != gfc_default_integer_kind) | |
5382 | { | |
5383 | gfc_error ("Component with LEN attribute at %C must be " | |
5384 | "default integer kind (%d)", | |
5385 | gfc_default_integer_kind); | |
5386 | m = MATCH_ERROR; | |
5387 | goto cleanup; | |
5388 | } | |
5389 | } | |
636dff67 | 5390 | else |
5046aff5 PT |
5391 | { |
5392 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5393 | &seen_at[d]); |
5046aff5 PT |
5394 | m = MATCH_ERROR; |
5395 | goto cleanup; | |
5396 | } | |
6de9cd9a DN |
5397 | } |
5398 | ||
4213f93b | 5399 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5400 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5401 | { |
5402 | if (d == DECL_PRIVATE) | |
5403 | attr = "PRIVATE"; | |
5404 | else | |
5405 | attr = "PUBLIC"; | |
d51347f9 TB |
5406 | if (gfc_current_state () == COMP_DERIVED |
5407 | && gfc_state_stack->previous | |
5408 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5409 | { | |
524af0d6 | 5410 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5411 | "at %L in a TYPE definition", attr, |
524af0d6 | 5412 | &seen_at[d])) |
d51347f9 TB |
5413 | { |
5414 | m = MATCH_ERROR; | |
5415 | goto cleanup; | |
5416 | } | |
5417 | } | |
5418 | else | |
5419 | { | |
5420 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5421 | "specification part of a module", attr, &seen_at[d]); | |
5422 | m = MATCH_ERROR; | |
5423 | goto cleanup; | |
5424 | } | |
4213f93b PT |
5425 | } |
5426 | ||
5bab4c96 PT |
5427 | if (gfc_current_state () != COMP_DERIVED |
5428 | && (d == DECL_KIND || d == DECL_LEN)) | |
5429 | { | |
5430 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5431 | "definition", &seen_at[d]); | |
5432 | m = MATCH_ERROR; | |
5433 | goto cleanup; | |
5434 | } | |
5435 | ||
6de9cd9a DN |
5436 | switch (d) |
5437 | { | |
5438 | case DECL_ALLOCATABLE: | |
5439 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5440 | break; | |
5441 | ||
1eee5628 | 5442 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5443 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5444 | t = false; | |
1eee5628 TB |
5445 | else |
5446 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5447 | break; | |
5448 | ||
be59db2d TB |
5449 | case DECL_CODIMENSION: |
5450 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5451 | break; | |
5452 | ||
fe4e525c | 5453 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5454 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5455 | t = false; | |
fe4e525c TB |
5456 | else |
5457 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5458 | break; | |
5459 | ||
6de9cd9a | 5460 | case DECL_DIMENSION: |
231b2fcc | 5461 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5462 | break; |
5463 | ||
5464 | case DECL_EXTERNAL: | |
5465 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5466 | break; | |
5467 | ||
5468 | case DECL_IN: | |
5469 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5470 | break; | |
5471 | ||
5472 | case DECL_OUT: | |
5473 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5474 | break; | |
5475 | ||
5476 | case DECL_INOUT: | |
5477 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5478 | break; | |
5479 | ||
5480 | case DECL_INTRINSIC: | |
5481 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5482 | break; | |
5483 | ||
5484 | case DECL_OPTIONAL: | |
5485 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5486 | break; | |
5487 | ||
5bab4c96 PT |
5488 | case DECL_KIND: |
5489 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5490 | break; | |
5491 | ||
5492 | case DECL_LEN: | |
5493 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5494 | break; | |
5495 | ||
6de9cd9a | 5496 | case DECL_PARAMETER: |
231b2fcc | 5497 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5498 | break; |
5499 | ||
5500 | case DECL_POINTER: | |
5501 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5502 | break; | |
5503 | ||
ee7e677f | 5504 | case DECL_PROTECTED: |
721be0f4 SK |
5505 | if (gfc_current_state () != COMP_MODULE |
5506 | || (gfc_current_ns->proc_name | |
5507 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5508 | { |
5509 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5510 | "part of a module"); | |
524af0d6 | 5511 | t = false; |
ee7e677f TB |
5512 | break; |
5513 | } | |
5514 | ||
524af0d6 JB |
5515 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5516 | t = false; | |
ee7e677f TB |
5517 | else |
5518 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5519 | break; | |
5520 | ||
6de9cd9a | 5521 | case DECL_PRIVATE: |
231b2fcc TS |
5522 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5523 | &seen_at[d]); | |
6de9cd9a DN |
5524 | break; |
5525 | ||
5526 | case DECL_PUBLIC: | |
231b2fcc TS |
5527 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5528 | &seen_at[d]); | |
6de9cd9a DN |
5529 | break; |
5530 | ||
34d567d1 | 5531 | case DECL_STATIC: |
6de9cd9a | 5532 | case DECL_SAVE: |
80f95228 | 5533 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5534 | break; |
5535 | ||
34d567d1 FR |
5536 | case DECL_AUTOMATIC: |
5537 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5538 | break; | |
5539 | ||
6de9cd9a DN |
5540 | case DECL_TARGET: |
5541 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5542 | break; | |
5543 | ||
a8b3b0b6 CR |
5544 | case DECL_IS_BIND_C: |
5545 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5546 | break; | |
f5acf0f2 | 5547 | |
06469efd | 5548 | case DECL_VALUE: |
524af0d6 JB |
5549 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5550 | t = false; | |
06469efd PT |
5551 | else |
5552 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5553 | break; | |
5554 | ||
775e6c3a | 5555 | case DECL_VOLATILE: |
524af0d6 JB |
5556 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5557 | t = false; | |
775e6c3a TB |
5558 | else |
5559 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5560 | break; | |
5561 | ||
6de9cd9a DN |
5562 | default: |
5563 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5564 | } | |
5565 | ||
524af0d6 | 5566 | if (!t) |
6de9cd9a DN |
5567 | { |
5568 | m = MATCH_ERROR; | |
5569 | goto cleanup; | |
5570 | } | |
5571 | } | |
5572 | ||
dab2cbf8 | 5573 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5574 | if ((gfc_current_state () == COMP_MODULE |
5575 | || gfc_current_state () == COMP_SUBMODULE) | |
5576 | && !current_attr.save | |
dab2cbf8 | 5577 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5578 | current_attr.save = SAVE_IMPLICIT; |
5579 | ||
6de9cd9a DN |
5580 | colon_seen = 1; |
5581 | return MATCH_YES; | |
5582 | ||
5583 | cleanup: | |
63645982 | 5584 | gfc_current_locus = start; |
6de9cd9a DN |
5585 | gfc_free_array_spec (current_as); |
5586 | current_as = NULL; | |
6f855a26 | 5587 | attr_seen = 0; |
6de9cd9a DN |
5588 | return m; |
5589 | } | |
5590 | ||
5591 | ||
a8b3b0b6 CR |
5592 | /* Set the binding label, dest_label, either with the binding label |
5593 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5594 | will be the symbol name in all lower case, as required by the draft | |
5595 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5596 | there is more than one argument (num_idents), it is an error. */ | |
5597 | ||
524af0d6 | 5598 | static bool |
f5acf0f2 | 5599 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5600 | int num_idents) |
a8b3b0b6 | 5601 | { |
ad4a2f64 | 5602 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5603 | { |
ad4a2f64 TB |
5604 | gfc_error ("Multiple identifiers provided with " |
5605 | "single NAME= specifier at %C"); | |
524af0d6 | 5606 | return false; |
ad4a2f64 | 5607 | } |
a8b3b0b6 | 5608 | |
62603fae | 5609 | if (curr_binding_label) |
eea58adb | 5610 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5611 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5612 | else |
5613 | { | |
5614 | /* No binding label given, and the NAME= specifier did not exist, | |
5615 | which means there was no NAME="". */ | |
5616 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5617 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5618 | } |
f5acf0f2 | 5619 | |
524af0d6 | 5620 | return true; |
a8b3b0b6 CR |
5621 | } |
5622 | ||
5623 | ||
5624 | /* Set the status of the given common block as being BIND(C) or not, | |
5625 | depending on the given parameter, is_bind_c. */ | |
5626 | ||
5627 | void | |
5628 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5629 | { | |
5630 | com_block->is_bind_c = is_bind_c; | |
5631 | return; | |
5632 | } | |
5633 | ||
5634 | ||
5635 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5636 | ||
524af0d6 | 5637 | bool |
00820a2a | 5638 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5639 | { |
bc21d315 | 5640 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5641 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5642 | ? true : false; |
00820a2a | 5643 | else if (ts->type == BT_CLASS) |
524af0d6 | 5644 | return false; |
45a69325 | 5645 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5646 | return false; |
45a69325 | 5647 | |
524af0d6 | 5648 | return true; |
a8b3b0b6 CR |
5649 | } |
5650 | ||
5651 | ||
5652 | /* Verify that the variables of a given common block, which has been | |
5653 | defined with the attribute specifier bind(c), to be of a C | |
5654 | interoperable type. Errors will be reported here, if | |
5655 | encountered. */ | |
5656 | ||
524af0d6 | 5657 | bool |
a8b3b0b6 CR |
5658 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5659 | { | |
5660 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5661 | bool retval = true; |
a8b3b0b6 CR |
5662 | |
5663 | curr_sym = com_block->head; | |
f5acf0f2 | 5664 | |
a8b3b0b6 CR |
5665 | /* Make sure we have at least one symbol. */ |
5666 | if (curr_sym == NULL) | |
5667 | return retval; | |
5668 | ||
5669 | /* Here we know we have a symbol, so we'll execute this loop | |
5670 | at least once. */ | |
5671 | do | |
5672 | { | |
5673 | /* The second to last param, 1, says this is in a common block. */ | |
5674 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5675 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5676 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5677 | |
5678 | return retval; | |
5679 | } | |
5680 | ||
5681 | ||
5682 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5683 | an appropriate error message is reported. */ | |
5684 | ||
524af0d6 | 5685 | bool |
a8b3b0b6 CR |
5686 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5687 | int is_in_common, gfc_common_head *com_block) | |
5688 | { | |
8327f9c2 | 5689 | bool bind_c_function = false; |
524af0d6 | 5690 | bool retval = true; |
d8fa96e0 | 5691 | |
8327f9c2 TB |
5692 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5693 | bind_c_function = true; | |
5694 | ||
d8fa96e0 CR |
5695 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5696 | { | |
5697 | tmp_sym = tmp_sym->result; | |
5698 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5699 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5700 | { |
48749dbc MLI |
5701 | gfc_warning (OPT_Wc_binding_type, |
5702 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5703 | "%L may not be C interoperable", tmp_sym->name, |
5704 | &tmp_sym->declared_at); | |
5705 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5706 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5707 | tmp_sym->ts.is_c_interop = 1; | |
5708 | tmp_sym->attr.is_c_interop = 1; | |
5709 | } | |
5710 | } | |
8327f9c2 | 5711 | |
a8b3b0b6 CR |
5712 | /* Here, we know we have the bind(c) attribute, so if we have |
5713 | enough type info, then verify that it's a C interop kind. | |
5714 | The info could be in the symbol already, or possibly still in | |
5715 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5716 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5717 | { |
524af0d6 | 5718 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5719 | { |
5720 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5721 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5722 | { |
48749dbc MLI |
5723 | gfc_warning (OPT_Wc_binding_type, |
5724 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5725 | "may not be a C interoperable " |
48749dbc | 5726 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5727 | tmp_sym->name, com_block->name, |
5728 | &(tmp_sym->declared_at), com_block->name); | |
5729 | } | |
5730 | else | |
5731 | { | |
5732 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5733 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5734 | "interoperable but it is BIND(C)", |
5735 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5736 | else if (warn_c_binding_type) |
48749dbc | 5737 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5738 | "may not be a C interoperable " |
c4100eae | 5739 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5740 | tmp_sym->name, &(tmp_sym->declared_at)); |
5741 | } | |
5742 | } | |
f5acf0f2 | 5743 | |
a8b3b0b6 CR |
5744 | /* Variables declared w/in a common block can't be bind(c) |
5745 | since there's no way for C to see these variables, so there's | |
5746 | semantically no reason for the attribute. */ | |
5747 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5748 | { | |
c4100eae | 5749 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5750 | "%L cannot be declared with BIND(C) " |
5751 | "since it is not a global", | |
5752 | tmp_sym->name, com_block->name, | |
5753 | &(tmp_sym->declared_at)); | |
524af0d6 | 5754 | retval = false; |
a8b3b0b6 | 5755 | } |
f5acf0f2 | 5756 | |
67914693 | 5757 | /* Scalar variables that are bind(c) cannot have the pointer |
a8b3b0b6 CR |
5758 | or allocatable attributes. */ |
5759 | if (tmp_sym->attr.is_bind_c == 1) | |
5760 | { | |
5761 | if (tmp_sym->attr.pointer == 1) | |
5762 | { | |
c4100eae | 5763 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5764 | "POINTER and BIND(C) attributes", |
5765 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5766 | retval = false; |
a8b3b0b6 CR |
5767 | } |
5768 | ||
5769 | if (tmp_sym->attr.allocatable == 1) | |
5770 | { | |
c4100eae | 5771 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5772 | "ALLOCATABLE and BIND(C) attributes", |
5773 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5774 | retval = false; |
a8b3b0b6 CR |
5775 | } |
5776 | ||
8327f9c2 TB |
5777 | } |
5778 | ||
5779 | /* If it is a BIND(C) function, make sure the return value is a | |
5780 | scalar value. The previous tests in this function made sure | |
5781 | the type is interoperable. */ | |
5782 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5783 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5784 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5785 | ||
67914693 | 5786 | /* BIND(C) functions cannot return a character string. */ |
8327f9c2 | 5787 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) |
bc21d315 JW |
5788 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5789 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5790 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
86ba9ce6 | 5791 | gfc_error ("Return type of BIND(C) function %qs of character " |
0f4f8561 | 5792 | "type at %L must have length 1", tmp_sym->name, |
a8b3b0b6 | 5793 | &(tmp_sym->declared_at)); |
a8b3b0b6 CR |
5794 | } |
5795 | ||
5796 | /* See if the symbol has been marked as private. If it has, make sure | |
5797 | there is no binding label and warn the user if there is one. */ | |
5798 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5799 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5800 | /* Use gfc_warning_now because we won't say that the symbol fails |
5801 | just because of this. */ | |
db30e21c | 5802 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5803 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5804 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5805 | ||
5806 | return retval; | |
5807 | } | |
5808 | ||
5809 | ||
5810 | /* Set the appropriate fields for a symbol that's been declared as | |
5811 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5812 | the type is C interoperable. Errors are reported by the functions | |
5813 | used to set/test these fields. */ | |
5814 | ||
524af0d6 | 5815 | bool |
a8b3b0b6 CR |
5816 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5817 | { | |
524af0d6 | 5818 | bool retval = true; |
f5acf0f2 | 5819 | |
a8b3b0b6 CR |
5820 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5821 | ||
5822 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5823 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5824 | ||
524af0d6 JB |
5825 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5826 | return false; | |
a8b3b0b6 CR |
5827 | |
5828 | return retval; | |
5829 | } | |
5830 | ||
5831 | ||
5832 | /* Set the fields marking the given common block as BIND(C), including | |
5833 | a binding label, and report any errors encountered. */ | |
5834 | ||
524af0d6 | 5835 | bool |
a8b3b0b6 CR |
5836 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5837 | { | |
524af0d6 | 5838 | bool retval = true; |
f5acf0f2 | 5839 | |
a8b3b0b6 | 5840 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5841 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5842 | num_idents)) |
5843 | return false; | |
a8b3b0b6 CR |
5844 | |
5845 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5846 | set_com_block_bind_c (com_block, 1); | |
5847 | ||
5848 | return retval; | |
5849 | } | |
5850 | ||
5851 | ||
5852 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5853 | attribute applies to. */ | |
5854 | ||
524af0d6 | 5855 | bool |
a8b3b0b6 CR |
5856 | get_bind_c_idents (void) |
5857 | { | |
5858 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5859 | int num_idents = 0; | |
5860 | gfc_symbol *tmp_sym = NULL; | |
5861 | match found_id; | |
5862 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5863 | |
a8b3b0b6 CR |
5864 | if (gfc_match_name (name) == MATCH_YES) |
5865 | { | |
5866 | found_id = MATCH_YES; | |
5867 | gfc_get_ha_symbol (name, &tmp_sym); | |
5868 | } | |
5869 | else if (match_common_name (name) == MATCH_YES) | |
5870 | { | |
5871 | found_id = MATCH_YES; | |
5872 | com_block = gfc_get_common (name, 0); | |
5873 | } | |
5874 | else | |
5875 | { | |
5876 | gfc_error ("Need either entity or common block name for " | |
5877 | "attribute specification statement at %C"); | |
524af0d6 | 5878 | return false; |
a8b3b0b6 | 5879 | } |
f5acf0f2 | 5880 | |
a8b3b0b6 CR |
5881 | /* Save the current identifier and look for more. */ |
5882 | do | |
5883 | { | |
5884 | /* Increment the number of identifiers found for this spec stmt. */ | |
5885 | num_idents++; | |
5886 | ||
5887 | /* Make sure we have a sym or com block, and verify that it can | |
5888 | be bind(c). Set the appropriate field(s) and look for more | |
5889 | identifiers. */ | |
f5acf0f2 | 5890 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5891 | { |
5892 | if (tmp_sym != NULL) | |
5893 | { | |
524af0d6 JB |
5894 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5895 | return false; | |
a8b3b0b6 CR |
5896 | } |
5897 | else | |
5898 | { | |
524af0d6 JB |
5899 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5900 | return false; | |
a8b3b0b6 | 5901 | } |
f5acf0f2 | 5902 | |
a8b3b0b6 CR |
5903 | /* Look to see if we have another identifier. */ |
5904 | tmp_sym = NULL; | |
5905 | if (gfc_match_eos () == MATCH_YES) | |
5906 | found_id = MATCH_NO; | |
5907 | else if (gfc_match_char (',') != MATCH_YES) | |
5908 | found_id = MATCH_NO; | |
5909 | else if (gfc_match_name (name) == MATCH_YES) | |
5910 | { | |
5911 | found_id = MATCH_YES; | |
5912 | gfc_get_ha_symbol (name, &tmp_sym); | |
5913 | } | |
5914 | else if (match_common_name (name) == MATCH_YES) | |
5915 | { | |
5916 | found_id = MATCH_YES; | |
5917 | com_block = gfc_get_common (name, 0); | |
5918 | } | |
5919 | else | |
5920 | { | |
5921 | gfc_error ("Missing entity or common block name for " | |
5922 | "attribute specification statement at %C"); | |
524af0d6 | 5923 | return false; |
a8b3b0b6 CR |
5924 | } |
5925 | } | |
5926 | else | |
5927 | { | |
5928 | gfc_internal_error ("Missing symbol"); | |
5929 | } | |
5930 | } while (found_id == MATCH_YES); | |
5931 | ||
5932 | /* if we get here we were successful */ | |
524af0d6 | 5933 | return true; |
a8b3b0b6 CR |
5934 | } |
5935 | ||
5936 | ||
5937 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5938 | |
a8b3b0b6 CR |
5939 | match |
5940 | gfc_match_bind_c_stmt (void) | |
5941 | { | |
5942 | match found_match = MATCH_NO; | |
5943 | gfc_typespec *ts; | |
5944 | ||
5945 | ts = ¤t_ts; | |
f5acf0f2 | 5946 | |
a8b3b0b6 CR |
5947 | /* This may not be necessary. */ |
5948 | gfc_clear_ts (ts); | |
5949 | /* Clear the temporary binding label holder. */ | |
62603fae | 5950 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5951 | |
5952 | /* Look for the bind(c). */ | |
1eabf70a | 5953 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5954 | |
5955 | if (found_match == MATCH_YES) | |
5956 | { | |
878cdb7b TB |
5957 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5958 | return MATCH_ERROR; | |
5959 | ||
a8b3b0b6 CR |
5960 | /* Look for the :: now, but it is not required. */ |
5961 | gfc_match (" :: "); | |
5962 | ||
5963 | /* Get the identifier(s) that needs to be updated. This may need to | |
5964 | change to hand the flag(s) for the attr specified so all identifiers | |
5965 | found can have all appropriate parts updated (assuming that the same | |
5966 | spec stmt can have multiple attrs, such as both bind(c) and | |
5967 | allocatable...). */ | |
524af0d6 | 5968 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5969 | /* Error message should have printed already. */ |
5970 | return MATCH_ERROR; | |
5971 | } | |
5972 | ||
5973 | return found_match; | |
5974 | } | |
5975 | ||
5976 | ||
6de9cd9a DN |
5977 | /* Match a data declaration statement. */ |
5978 | ||
5979 | match | |
5980 | gfc_match_data_decl (void) | |
5981 | { | |
5982 | gfc_symbol *sym; | |
5983 | match m; | |
949d5b72 | 5984 | int elem; |
6de9cd9a | 5985 | |
5bab4c96 PT |
5986 | type_param_spec_list = NULL; |
5987 | decl_type_param_list = NULL; | |
5988 | ||
a8b3b0b6 | 5989 | num_idents_on_line = 0; |
f5acf0f2 | 5990 | |
e74f1cc8 | 5991 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5992 | if (m != MATCH_YES) |
5993 | return m; | |
5994 | ||
2e23972e | 5995 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5996 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5997 | { |
bc21d315 | 5998 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5999 | |
6000 | if (sym == NULL) | |
6001 | { | |
6002 | m = MATCH_ERROR; | |
6003 | goto cleanup; | |
6004 | } | |
6005 | ||
bc21d315 | 6006 | current_ts.u.derived = sym; |
6de9cd9a DN |
6007 | } |
6008 | ||
6009 | m = match_attr_spec (); | |
6010 | if (m == MATCH_ERROR) | |
6011 | { | |
6012 | m = MATCH_NO; | |
6013 | goto cleanup; | |
6014 | } | |
6015 | ||
8b704316 PT |
6016 | if (current_ts.type == BT_CLASS |
6017 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
6018 | goto ok; | |
6019 | ||
2e23972e JW |
6020 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
6021 | && current_ts.u.derived->components == NULL | |
bc21d315 | 6022 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
6023 | { |
6024 | ||
f6288c24 | 6025 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
6026 | goto ok; |
6027 | ||
00cad178 | 6028 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
bf9f15ee PT |
6029 | goto ok; |
6030 | ||
bc21d315 | 6031 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 6032 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 6033 | |
976e21f6 | 6034 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
6035 | which has its components defined, or be a structure definition |
6036 | actively being parsed. */ | |
6037 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 6038 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
6039 | || current_ts.u.derived->attr.zero_comp |
6040 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
6041 | goto ok; |
6042 | ||
a1b80ec7 JW |
6043 | gfc_error ("Derived type at %C has not been previously defined " |
6044 | "and so cannot appear in a derived type definition"); | |
6045 | m = MATCH_ERROR; | |
6046 | goto cleanup; | |
6de9cd9a DN |
6047 | } |
6048 | ||
6049 | ok: | |
6050 | /* If we have an old-style character declaration, and no new-style | |
6051 | attribute specifications, then there a comma is optional between | |
6052 | the type specification and the variable list. */ | |
6053 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
6054 | gfc_match_char (','); | |
6055 | ||
949d5b72 PT |
6056 | /* Give the types/attributes to symbols that follow. Give the element |
6057 | a number so that repeat character length expressions can be copied. */ | |
6058 | elem = 1; | |
6de9cd9a DN |
6059 | for (;;) |
6060 | { | |
a8b3b0b6 | 6061 | num_idents_on_line++; |
949d5b72 | 6062 | m = variable_decl (elem++); |
6de9cd9a DN |
6063 | if (m == MATCH_ERROR) |
6064 | goto cleanup; | |
6065 | if (m == MATCH_NO) | |
6066 | break; | |
6067 | ||
6068 | if (gfc_match_eos () == MATCH_YES) | |
6069 | goto cleanup; | |
6070 | if (gfc_match_char (',') != MATCH_YES) | |
6071 | break; | |
6072 | } | |
6073 | ||
0f447a6e | 6074 | if (!gfc_error_flag_test ()) |
94903212 FR |
6075 | { |
6076 | /* An anonymous structure declaration is unambiguous; if we matched one | |
6077 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
6078 | here to avoid confusing the remaining matchers, even if there was an | |
6079 | error during variable_decl. We must flush any such errors. Note this | |
6080 | causes the parser to gracefully continue parsing the remaining input | |
6081 | as a structure body, which likely follows. */ | |
6082 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6083 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6084 | { | |
6085 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6086 | " at %C"); | |
6087 | /* Skip the bad variable_decl and line up for the start of the | |
6088 | structure body. */ | |
6089 | gfc_error_recovery (); | |
6090 | m = MATCH_YES; | |
6091 | goto cleanup; | |
6092 | } | |
6093 | ||
6094 | gfc_error ("Syntax error in data declaration at %C"); | |
6095 | } | |
6096 | ||
6de9cd9a DN |
6097 | m = MATCH_ERROR; |
6098 | ||
a9f6f1f2 JD |
6099 | gfc_free_data_all (gfc_current_ns); |
6100 | ||
6de9cd9a | 6101 | cleanup: |
5bab4c96 PT |
6102 | if (saved_kind_expr) |
6103 | gfc_free_expr (saved_kind_expr); | |
6104 | if (type_param_spec_list) | |
6105 | gfc_free_actual_arglist (type_param_spec_list); | |
6106 | if (decl_type_param_list) | |
6107 | gfc_free_actual_arglist (decl_type_param_list); | |
6108 | saved_kind_expr = NULL; | |
6de9cd9a DN |
6109 | gfc_free_array_spec (current_as); |
6110 | current_as = NULL; | |
6111 | return m; | |
6112 | } | |
6113 | ||
2810dfab SK |
6114 | static bool |
6115 | in_module_or_interface(void) | |
6116 | { | |
6117 | if (gfc_current_state () == COMP_MODULE | |
0a524296 | 6118 | || gfc_current_state () == COMP_SUBMODULE |
2810dfab SK |
6119 | || gfc_current_state () == COMP_INTERFACE) |
6120 | return true; | |
6121 | ||
6122 | if (gfc_state_stack->state == COMP_CONTAINS | |
6123 | || gfc_state_stack->state == COMP_FUNCTION | |
6124 | || gfc_state_stack->state == COMP_SUBROUTINE) | |
6125 | { | |
6126 | gfc_state_data *p; | |
6127 | for (p = gfc_state_stack->previous; p ; p = p->previous) | |
6128 | { | |
0a524296 | 6129 | if (p->state == COMP_MODULE || p->state == COMP_SUBMODULE |
2810dfab SK |
6130 | || p->state == COMP_INTERFACE) |
6131 | return true; | |
6132 | } | |
6133 | } | |
6134 | return false; | |
6135 | } | |
6de9cd9a DN |
6136 | |
6137 | /* Match a prefix associated with a function or subroutine | |
6138 | declaration. If the typespec pointer is nonnull, then a typespec | |
6139 | can be matched. Note that if nothing matches, MATCH_YES is | |
6140 | returned (the null string was matched). */ | |
6141 | ||
1c8bcdf7 PT |
6142 | match |
6143 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 6144 | { |
7389bce6 | 6145 | bool seen_type; |
e6c14898 DK |
6146 | bool seen_impure; |
6147 | bool found_prefix; | |
6de9cd9a DN |
6148 | |
6149 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
6150 | seen_type = false; |
6151 | seen_impure = false; | |
6de9cd9a | 6152 | |
3df684e2 DK |
6153 | gcc_assert (!gfc_matching_prefix); |
6154 | gfc_matching_prefix = true; | |
f37e928c | 6155 | |
e6c14898 | 6156 | do |
6de9cd9a | 6157 | { |
e6c14898 | 6158 | found_prefix = false; |
6de9cd9a | 6159 | |
70112e2a PT |
6160 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6161 | corresponding attribute seems natural and distinguishes these | |
6162 | procedures from procedure types of PROC_MODULE, which these are | |
6163 | as well. */ | |
6164 | if (gfc_match ("module% ") == MATCH_YES) | |
6165 | { | |
6166 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6167 | goto error; | |
6168 | ||
2810dfab SK |
6169 | if (!in_module_or_interface ()) |
6170 | { | |
6171 | gfc_error ("MODULE prefix at %C found outside of a module, " | |
6172 | "submodule, or interface"); | |
6173 | goto error; | |
6174 | } | |
6175 | ||
70112e2a PT |
6176 | current_attr.module_procedure = 1; |
6177 | found_prefix = true; | |
6178 | } | |
6179 | ||
e6c14898 DK |
6180 | if (!seen_type && ts != NULL |
6181 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6182 | && gfc_match_space () == MATCH_YES) | |
6183 | { | |
6de9cd9a | 6184 | |
e6c14898 DK |
6185 | seen_type = true; |
6186 | found_prefix = true; | |
6187 | } | |
6188 | ||
6189 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6190 | { | |
524af0d6 | 6191 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
6192 | goto error; |
6193 | ||
6194 | found_prefix = true; | |
6195 | } | |
6196 | ||
6197 | if (gfc_match ("pure% ") == MATCH_YES) | |
6198 | { | |
524af0d6 | 6199 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
6200 | goto error; |
6201 | ||
6202 | found_prefix = true; | |
6203 | } | |
6de9cd9a | 6204 | |
e6c14898 DK |
6205 | if (gfc_match ("recursive% ") == MATCH_YES) |
6206 | { | |
524af0d6 | 6207 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
6208 | goto error; |
6209 | ||
6210 | found_prefix = true; | |
6211 | } | |
6212 | ||
6213 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6214 | attribute but rather only prevents ELEMENTAL routines from being | |
6215 | automatically PURE. */ | |
6216 | if (gfc_match ("impure% ") == MATCH_YES) | |
6217 | { | |
524af0d6 | 6218 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
6219 | goto error; |
6220 | ||
6221 | seen_impure = true; | |
6222 | found_prefix = true; | |
6223 | } | |
6de9cd9a | 6224 | } |
e6c14898 | 6225 | while (found_prefix); |
6de9cd9a | 6226 | |
e6c14898 DK |
6227 | /* IMPURE and PURE must not both appear, of course. */ |
6228 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 6229 | { |
e6c14898 DK |
6230 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6231 | goto error; | |
6de9cd9a DN |
6232 | } |
6233 | ||
e6c14898 DK |
6234 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6235 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 6236 | { |
524af0d6 | 6237 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 6238 | goto error; |
6de9cd9a DN |
6239 | } |
6240 | ||
6241 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 6242 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 6243 | |
3df684e2 | 6244 | gfc_matching_prefix = false; |
6de9cd9a | 6245 | return MATCH_YES; |
f37e928c DK |
6246 | |
6247 | error: | |
3df684e2 DK |
6248 | gcc_assert (gfc_matching_prefix); |
6249 | gfc_matching_prefix = false; | |
f37e928c | 6250 | return MATCH_ERROR; |
6de9cd9a DN |
6251 | } |
6252 | ||
6253 | ||
1c8bcdf7 | 6254 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 6255 | |
524af0d6 | 6256 | static bool |
636dff67 | 6257 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 6258 | { |
6442a6f4 PT |
6259 | if (dest->module_procedure) |
6260 | { | |
6261 | if (current_attr.elemental) | |
6262 | dest->elemental = 1; | |
6263 | ||
6264 | if (current_attr.pure) | |
6265 | dest->pure = 1; | |
6266 | ||
6267 | if (current_attr.recursive) | |
6268 | dest->recursive = 1; | |
6269 | ||
6270 | /* Module procedures are unusual in that the 'dest' is copied from | |
6271 | the interface declaration. However, this is an oportunity to | |
6272 | check that the submodule declaration is compliant with the | |
6273 | interface. */ | |
6274 | if (dest->elemental && !current_attr.elemental) | |
6275 | { | |
6276 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6277 | "missing at %L", where); | |
6278 | return false; | |
6279 | } | |
6280 | ||
6281 | if (dest->pure && !current_attr.pure) | |
6282 | { | |
6283 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6284 | "missing at %L", where); | |
6285 | return false; | |
6286 | } | |
6287 | ||
6288 | if (dest->recursive && !current_attr.recursive) | |
6289 | { | |
6290 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6291 | "missing at %L", where); | |
6292 | return false; | |
6293 | } | |
6294 | ||
6295 | return true; | |
6296 | } | |
6de9cd9a | 6297 | |
524af0d6 JB |
6298 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6299 | return false; | |
6de9cd9a | 6300 | |
6442a6f4 PT |
6301 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6302 | return false; | |
6303 | ||
524af0d6 JB |
6304 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6305 | return false; | |
6de9cd9a | 6306 | |
524af0d6 | 6307 | return true; |
6de9cd9a DN |
6308 | } |
6309 | ||
6310 | ||
5bab4c96 PT |
6311 | /* Match a formal argument list or, if typeparam is true, a |
6312 | type_param_name_list. */ | |
6de9cd9a DN |
6313 | |
6314 | match | |
5bab4c96 PT |
6315 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6316 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6317 | { |
6318 | gfc_formal_arglist *head, *tail, *p, *q; | |
6319 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6320 | gfc_symbol *sym; | |
6321 | match m; | |
4668d6f9 | 6322 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6323 | |
6324 | head = tail = NULL; | |
6325 | ||
4668d6f9 PT |
6326 | /* Keep the interface formal argument list and null it so that the |
6327 | matching for the new declaration can be done. The numbers and | |
6328 | names of the arguments are checked here. The interface formal | |
6329 | arguments are retained in formal_arglist and the characteristics | |
6330 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6331 | in get_proc_name about the eventual need to copy the formal_arglist | |
6332 | and populate the formal namespace of the interface symbol. */ | |
6333 | if (progname->attr.module_procedure | |
6334 | && progname->attr.host_assoc) | |
6335 | { | |
6336 | formal = progname->formal; | |
6337 | progname->formal = NULL; | |
6338 | } | |
6339 | ||
6de9cd9a DN |
6340 | if (gfc_match_char ('(') != MATCH_YES) |
6341 | { | |
6342 | if (null_flag) | |
6343 | goto ok; | |
6344 | return MATCH_NO; | |
6345 | } | |
6346 | ||
6347 | if (gfc_match_char (')') == MATCH_YES) | |
0a524296 | 6348 | { |
84083a71 JW |
6349 | if (typeparam) |
6350 | { | |
6351 | gfc_error_now ("A type parameter list is required at %C"); | |
6352 | m = MATCH_ERROR; | |
6353 | goto cleanup; | |
6354 | } | |
6355 | else | |
6356 | goto ok; | |
6357 | } | |
6de9cd9a DN |
6358 | |
6359 | for (;;) | |
6360 | { | |
6361 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6362 | { |
6363 | sym = NULL; | |
276515e6 PT |
6364 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6365 | "Alternate-return argument at %C")) | |
9362a03b JW |
6366 | { |
6367 | m = MATCH_ERROR; | |
6368 | goto cleanup; | |
6369 | } | |
276515e6 PT |
6370 | else if (typeparam) |
6371 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6372 | } |
6de9cd9a DN |
6373 | else |
6374 | { | |
6375 | m = gfc_match_name (name); | |
6376 | if (m != MATCH_YES) | |
276515e6 PT |
6377 | { |
6378 | if(typeparam) | |
6379 | gfc_error_now ("A parameter name is required at %C"); | |
6380 | goto cleanup; | |
6381 | } | |
6de9cd9a | 6382 | |
5bab4c96 PT |
6383 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6384 | goto cleanup; | |
6385 | else if (typeparam | |
6386 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6387 | goto cleanup; |
6388 | } | |
6389 | ||
6390 | p = gfc_get_formal_arglist (); | |
6391 | ||
6392 | if (head == NULL) | |
6393 | head = tail = p; | |
6394 | else | |
6395 | { | |
6396 | tail->next = p; | |
6397 | tail = p; | |
6398 | } | |
6399 | ||
6400 | tail->sym = sym; | |
6401 | ||
6402 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6403 | dummy procedure. We don't apply these attributes to formal |
6404 | arguments of statement functions. */ | |
6de9cd9a | 6405 | if (sym != NULL && !st_flag |
524af0d6 JB |
6406 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6407 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6408 | { |
6409 | m = MATCH_ERROR; | |
6410 | goto cleanup; | |
6411 | } | |
6412 | ||
6413 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6414 | so check for it explicitly. After the statement is accepted, |
6415 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6416 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6417 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6418 | { | |
c4100eae | 6419 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6420 | sym->name); |
6421 | m = MATCH_ERROR; | |
6422 | goto cleanup; | |
6423 | } | |
6424 | ||
6425 | if (gfc_match_char (')') == MATCH_YES) | |
6426 | goto ok; | |
6427 | ||
6428 | m = gfc_match_char (','); | |
6429 | if (m != MATCH_YES) | |
6430 | { | |
de624bee PT |
6431 | if (typeparam) |
6432 | gfc_error_now ("Expected parameter list in type declaration " | |
6433 | "at %C"); | |
6434 | else | |
6435 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6436 | goto cleanup; |
6437 | } | |
6438 | } | |
6439 | ||
6440 | ok: | |
6441 | /* Check for duplicate symbols in the formal argument list. */ | |
6442 | if (head != NULL) | |
6443 | { | |
6444 | for (p = head; p->next; p = p->next) | |
6445 | { | |
6446 | if (p->sym == NULL) | |
6447 | continue; | |
6448 | ||
6449 | for (q = p->next; q; q = q->next) | |
6450 | if (p->sym == q->sym) | |
6451 | { | |
de624bee PT |
6452 | if (typeparam) |
6453 | gfc_error_now ("Duplicate name %qs in parameter " | |
6454 | "list at %C", p->sym->name); | |
6455 | else | |
6456 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6457 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6458 | |
6459 | m = MATCH_ERROR; | |
6460 | goto cleanup; | |
6461 | } | |
6462 | } | |
6463 | } | |
6464 | ||
524af0d6 | 6465 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6466 | { |
6467 | m = MATCH_ERROR; | |
6468 | goto cleanup; | |
6469 | } | |
6470 | ||
e9d9b48d PT |
6471 | /* gfc_error_now used in following and return with MATCH_YES because |
6472 | doing otherwise results in a cascade of extraneous errors and in | |
6473 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6474 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6475 | { |
0ef5fbc1 PT |
6476 | bool arg_count_mismatch = false; |
6477 | ||
6478 | if (!formal && head) | |
6479 | arg_count_mismatch = true; | |
6480 | ||
6481 | /* Abbreviated module procedure declaration is not meant to have any | |
6482 | formal arguments! */ | |
e9d9b48d | 6483 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6484 | arg_count_mismatch = true; |
6485 | ||
4668d6f9 PT |
6486 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6487 | { | |
6488 | if ((p->next != NULL && q->next == NULL) | |
6489 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6490 | arg_count_mismatch = true; |
4668d6f9 PT |
6491 | else if ((p->sym == NULL && q->sym == NULL) |
6492 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6493 | continue; | |
6494 | else | |
6495 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6496 | "argument names (%s/%s) at %C", | |
6497 | p->sym->name, q->sym->name); | |
6498 | } | |
0ef5fbc1 PT |
6499 | |
6500 | if (arg_count_mismatch) | |
6501 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6502 | "formal arguments at %C"); | |
4668d6f9 PT |
6503 | } |
6504 | ||
6de9cd9a DN |
6505 | return MATCH_YES; |
6506 | ||
6507 | cleanup: | |
6508 | gfc_free_formal_arglist (head); | |
6509 | return m; | |
6510 | } | |
6511 | ||
6512 | ||
6513 | /* Match a RESULT specification following a function declaration or | |
6514 | ENTRY statement. Also matches the end-of-statement. */ | |
6515 | ||
6516 | static match | |
66e4ab31 | 6517 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6518 | { |
6519 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6520 | gfc_symbol *r; | |
6521 | match m; | |
6522 | ||
6523 | if (gfc_match (" result (") != MATCH_YES) | |
6524 | return MATCH_NO; | |
6525 | ||
6526 | m = gfc_match_name (name); | |
6527 | if (m != MATCH_YES) | |
6528 | return m; | |
6529 | ||
a8b3b0b6 CR |
6530 | /* Get the right paren, and that's it because there could be the |
6531 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6532 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6533 | { |
a8b3b0b6 | 6534 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6535 | return MATCH_ERROR; |
6536 | } | |
6537 | ||
6538 | if (strcmp (function->name, name) == 0) | |
6539 | { | |
636dff67 | 6540 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6541 | return MATCH_ERROR; |
6542 | } | |
6543 | ||
6544 | if (gfc_get_symbol (name, NULL, &r)) | |
6545 | return MATCH_ERROR; | |
6546 | ||
524af0d6 | 6547 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6548 | return MATCH_ERROR; |
6549 | ||
6550 | *result = r; | |
6551 | ||
6552 | return MATCH_YES; | |
6553 | } | |
6554 | ||
6555 | ||
a8b3b0b6 CR |
6556 | /* Match a function suffix, which could be a combination of a result |
6557 | clause and BIND(C), either one, or neither. The draft does not | |
6558 | require them to come in a specific order. */ | |
6559 | ||
6560 | match | |
6561 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6562 | { | |
6563 | match is_bind_c; /* Found bind(c). */ | |
6564 | match is_result; /* Found result clause. */ | |
6565 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6566 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6567 | bool allow_binding_name; |
a8b3b0b6 CR |
6568 | |
6569 | /* Initialize to having found nothing. */ | |
6570 | found_match = MATCH_NO; | |
f5acf0f2 | 6571 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6572 | is_result = MATCH_NO; |
6573 | ||
6574 | /* Get the next char to narrow between result and bind(c). */ | |
6575 | gfc_gobble_whitespace (); | |
8fc541d3 | 6576 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6577 | |
1eabf70a TB |
6578 | /* C binding names are not allowed for internal procedures. */ |
6579 | if (gfc_current_state () == COMP_CONTAINS | |
6580 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6581 | allow_binding_name = false; | |
6582 | else | |
6583 | allow_binding_name = true; | |
6584 | ||
a8b3b0b6 CR |
6585 | switch (peek_char) |
6586 | { | |
6587 | case 'r': | |
6588 | /* Look for result clause. */ | |
6589 | is_result = match_result (sym, result); | |
6590 | if (is_result == MATCH_YES) | |
6591 | { | |
6592 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6593 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6594 | /* We've found the result clause and possibly bind(c). */ |
6595 | found_match = MATCH_YES; | |
6596 | } | |
6597 | else | |
6598 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6599 | found_match = is_result; |
a8b3b0b6 CR |
6600 | break; |
6601 | case 'b': | |
6602 | /* Look for bind(c) first. */ | |
1eabf70a | 6603 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6604 | if (is_bind_c == MATCH_YES) |
6605 | { | |
6606 | /* Now see if a result clause followed it. */ | |
6607 | is_result = match_result (sym, result); | |
6608 | found_match = MATCH_YES; | |
6609 | } | |
6610 | else | |
6611 | { | |
6612 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6613 | found_match = MATCH_ERROR; | |
6614 | } | |
6615 | break; | |
6616 | default: | |
6617 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6618 | found_match = MATCH_ERROR; | |
6619 | break; | |
6620 | } | |
6621 | ||
a8b3b0b6 | 6622 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6623 | { |
1eabf70a | 6624 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6625 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6626 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6627 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6628 | "at %L may not be specified for an internal " | |
6629 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6630 | return MATCH_ERROR; |
6631 | ||
524af0d6 | 6632 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6633 | return MATCH_ERROR; |
6634 | } | |
f5acf0f2 | 6635 | |
a8b3b0b6 CR |
6636 | return found_match; |
6637 | } | |
6638 | ||
6639 | ||
3070bab4 JW |
6640 | /* Procedure pointer return value without RESULT statement: |
6641 | Add "hidden" result variable named "ppr@". */ | |
6642 | ||
524af0d6 | 6643 | static bool |
3070bab4 JW |
6644 | add_hidden_procptr_result (gfc_symbol *sym) |
6645 | { | |
6646 | bool case1,case2; | |
6647 | ||
6648 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6649 | return false; |
3070bab4 JW |
6650 | |
6651 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6652 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6653 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6654 | && sym->attr.external; | |
6655 | /* Second usage case: INTERFACE statements. */ | |
6656 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6657 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6658 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6659 | ||
6660 | if (case1 || case2) | |
6661 | { | |
6662 | gfc_symtree *stree; | |
6663 | if (case1) | |
08a6b8e0 | 6664 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
5433e401 | 6665 | else |
c73b6478 JW |
6666 | { |
6667 | gfc_symtree *st2; | |
08a6b8e0 | 6668 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6669 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6670 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6671 | stree->n.sym->refs++; |
c73b6478 | 6672 | } |
3070bab4 JW |
6673 | sym->result = stree->n.sym; |
6674 | ||
6675 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6676 | sym->result->attr.pointer = sym->attr.pointer; | |
6677 | sym->result->attr.external = sym->attr.external; | |
6678 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6679 | sym->result->ts = sym->ts; |
3070bab4 JW |
6680 | sym->attr.proc_pointer = 0; |
6681 | sym->attr.pointer = 0; | |
6682 | sym->attr.external = 0; | |
6683 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6684 | { | |
6685 | sym->result->attr.pointer = 0; | |
6686 | sym->result->attr.proc_pointer = 1; | |
6687 | } | |
6688 | ||
6689 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6690 | } | |
6691 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6692 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6693 | && sym->result && sym->result != sym && sym->result->attr.external | |
6694 | && sym == gfc_current_ns->proc_name | |
6695 | && sym == sym->result->ns->proc_name | |
6696 | && strcmp ("ppr@", sym->result->name) == 0) | |
6697 | { | |
6698 | sym->result->attr.proc_pointer = 1; | |
6699 | sym->attr.pointer = 0; | |
524af0d6 | 6700 | return true; |
3070bab4 JW |
6701 | } |
6702 | else | |
524af0d6 | 6703 | return false; |
3070bab4 JW |
6704 | } |
6705 | ||
6706 | ||
713485cc JW |
6707 | /* Match the interface for a PROCEDURE declaration, |
6708 | including brackets (R1212). */ | |
69773742 JW |
6709 | |
6710 | static match | |
713485cc | 6711 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6712 | { |
6713 | match m; | |
3276e0b3 | 6714 | gfc_symtree *st; |
69773742 | 6715 | locus old_loc, entry_loc; |
3276e0b3 PT |
6716 | gfc_namespace *old_ns = gfc_current_ns; |
6717 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6718 | |
3276e0b3 | 6719 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6720 | gfc_clear_ts (¤t_ts); |
6721 | ||
6722 | if (gfc_match (" (") != MATCH_YES) | |
6723 | { | |
6724 | gfc_current_locus = entry_loc; | |
6725 | return MATCH_NO; | |
6726 | } | |
6727 | ||
6728 | /* Get the type spec. for the procedure interface. */ | |
6729 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6730 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6731 | gfc_gobble_whitespace (); |
8fc541d3 | 6732 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6733 | goto got_ts; |
6734 | ||
6735 | if (m == MATCH_ERROR) | |
6736 | return m; | |
6737 | ||
3276e0b3 | 6738 | /* Procedure interface is itself a procedure. */ |
69773742 | 6739 | gfc_current_locus = old_loc; |
3276e0b3 | 6740 | m = gfc_match_name (name); |
69773742 | 6741 | |
3276e0b3 PT |
6742 | /* First look to see if it is already accessible in the current |
6743 | namespace because it is use associated or contained. */ | |
6744 | st = NULL; | |
6745 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6746 | return MATCH_ERROR; | |
6747 | ||
6748 | /* If it is still not found, then try the parent namespace, if it | |
6749 | exists and create the symbol there if it is still not found. */ | |
6750 | if (gfc_current_ns->parent) | |
6751 | gfc_current_ns = gfc_current_ns->parent; | |
6752 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6753 | return MATCH_ERROR; | |
6754 | ||
6755 | gfc_current_ns = old_ns; | |
6756 | *proc_if = st->n.sym; | |
69773742 | 6757 | |
713485cc | 6758 | if (*proc_if) |
69773742 | 6759 | { |
713485cc | 6760 | (*proc_if)->refs++; |
bb343a6c TB |
6761 | /* Resolve interface if possible. That way, attr.procedure is only set |
6762 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6763 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6764 | while ((*proc_if)->ts.interface |
6765 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6766 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6767 | |
0e8d854e JW |
6768 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6769 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6770 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6771 | (*proc_if)->name, NULL)) |
0e8d854e | 6772 | return MATCH_ERROR; |
69773742 JW |
6773 | } |
6774 | ||
6775 | got_ts: | |
69773742 JW |
6776 | if (gfc_match (" )") != MATCH_YES) |
6777 | { | |
6778 | gfc_current_locus = entry_loc; | |
6779 | return MATCH_NO; | |
6780 | } | |
6781 | ||
713485cc JW |
6782 | return MATCH_YES; |
6783 | } | |
6784 | ||
6785 | ||
6786 | /* Match a PROCEDURE declaration (R1211). */ | |
6787 | ||
6788 | static match | |
6789 | match_procedure_decl (void) | |
6790 | { | |
6791 | match m; | |
6792 | gfc_symbol *sym, *proc_if = NULL; | |
6793 | int num; | |
6794 | gfc_expr *initializer = NULL; | |
6795 | ||
1cc0e193 | 6796 | /* Parse interface (with brackets). */ |
713485cc JW |
6797 | m = match_procedure_interface (&proc_if); |
6798 | if (m != MATCH_YES) | |
6799 | return m; | |
6800 | ||
6801 | /* Parse attributes (with colons). */ | |
69773742 JW |
6802 | m = match_attr_spec(); |
6803 | if (m == MATCH_ERROR) | |
6804 | return MATCH_ERROR; | |
6805 | ||
0859be17 TB |
6806 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6807 | { | |
6808 | current_attr.is_bind_c = 1; | |
6809 | has_name_equals = 0; | |
6810 | curr_binding_label = NULL; | |
6811 | } | |
6812 | ||
69773742 JW |
6813 | /* Get procedure symbols. */ |
6814 | for(num=1;;num++) | |
6815 | { | |
69773742 JW |
6816 | m = gfc_match_symbol (&sym, 0); |
6817 | if (m == MATCH_NO) | |
6818 | goto syntax; | |
6819 | else if (m == MATCH_ERROR) | |
6820 | return m; | |
6821 | ||
6822 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6823 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6824 | return MATCH_ERROR; |
6825 | ||
6826 | if (sym->attr.is_bind_c) | |
6827 | { | |
6828 | /* Check for C1218. */ | |
6829 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6830 | { | |
6831 | gfc_error ("BIND(C) attribute at %C requires " | |
6832 | "an interface with BIND(C)"); | |
6833 | return MATCH_ERROR; | |
6834 | } | |
6835 | /* Check for C1217. */ | |
6836 | if (has_name_equals && sym->attr.pointer) | |
6837 | { | |
6838 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6839 | "POINTER attribute at %C"); | |
6840 | return MATCH_ERROR; | |
6841 | } | |
6842 | if (has_name_equals && sym->attr.dummy) | |
6843 | { | |
6844 | gfc_error ("Dummy procedure at %C may not have " | |
6845 | "BIND(C) attribute with NAME"); | |
6846 | return MATCH_ERROR; | |
6847 | } | |
6848 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6849 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6850 | return MATCH_ERROR; |
6851 | } | |
6852 | ||
524af0d6 | 6853 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6854 | return MATCH_ERROR; |
3070bab4 | 6855 | |
524af0d6 | 6856 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6857 | sym = sym->result; |
6858 | ||
524af0d6 | 6859 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6860 | return MATCH_ERROR; |
6861 | ||
6862 | /* Set interface. */ | |
6863 | if (proc_if != NULL) | |
6cc309c9 | 6864 | { |
1d146030 JW |
6865 | if (sym->ts.type != BT_UNKNOWN) |
6866 | { | |
c4100eae | 6867 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6868 | sym->name, &gfc_current_locus, |
6869 | gfc_basic_typename (sym->ts.type)); | |
6870 | return MATCH_ERROR; | |
6871 | } | |
32d99e68 | 6872 | sym->ts.interface = proc_if; |
6cc309c9 | 6873 | sym->attr.untyped = 1; |
c73b6478 | 6874 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6875 | } |
69773742 JW |
6876 | else if (current_ts.type != BT_UNKNOWN) |
6877 | { | |
524af0d6 | 6878 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6879 | return MATCH_ERROR; |
32d99e68 JW |
6880 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6881 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6882 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6883 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6884 | sym->attr.function = 1; |
c73b6478 | 6885 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6886 | } |
6887 | ||
8fb74da4 JW |
6888 | if (gfc_match (" =>") == MATCH_YES) |
6889 | { | |
6890 | if (!current_attr.pointer) | |
6891 | { | |
6892 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6893 | m = MATCH_ERROR; | |
6894 | goto cleanup; | |
6895 | } | |
6896 | ||
80f95228 | 6897 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6898 | if (m != MATCH_YES) |
6899 | goto cleanup; | |
6900 | ||
524af0d6 | 6901 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6902 | goto cleanup; |
6903 | ||
6904 | } | |
6905 | ||
69773742 JW |
6906 | if (gfc_match_eos () == MATCH_YES) |
6907 | return MATCH_YES; | |
6908 | if (gfc_match_char (',') != MATCH_YES) | |
6909 | goto syntax; | |
6910 | } | |
6911 | ||
6912 | syntax: | |
6913 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6914 | return MATCH_ERROR; | |
8fb74da4 JW |
6915 | |
6916 | cleanup: | |
6917 | /* Free stuff up and return. */ | |
6918 | gfc_free_expr (initializer); | |
6919 | return m; | |
69773742 JW |
6920 | } |
6921 | ||
6922 | ||
713485cc JW |
6923 | static match |
6924 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6925 | ||
6926 | ||
6927 | /* Match a procedure pointer component declaration (R445). */ | |
6928 | ||
6929 | static match | |
6930 | match_ppc_decl (void) | |
6931 | { | |
6932 | match m; | |
6933 | gfc_symbol *proc_if = NULL; | |
6934 | gfc_typespec ts; | |
6935 | int num; | |
6936 | gfc_component *c; | |
6937 | gfc_expr *initializer = NULL; | |
6938 | gfc_typebound_proc* tb; | |
6939 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6940 | ||
6941 | /* Parse interface (with brackets). */ | |
6942 | m = match_procedure_interface (&proc_if); | |
6943 | if (m != MATCH_YES) | |
6944 | goto syntax; | |
6945 | ||
6946 | /* Parse attributes. */ | |
6947 | tb = XCNEW (gfc_typebound_proc); | |
6948 | tb->where = gfc_current_locus; | |
6949 | m = match_binding_attributes (tb, false, true); | |
6950 | if (m == MATCH_ERROR) | |
6951 | return m; | |
6952 | ||
713485cc JW |
6953 | gfc_clear_attr (¤t_attr); |
6954 | current_attr.procedure = 1; | |
6955 | current_attr.proc_pointer = 1; | |
6956 | current_attr.access = tb->access; | |
6957 | current_attr.flavor = FL_PROCEDURE; | |
6958 | ||
6959 | /* Match the colons (required). */ | |
6960 | if (gfc_match (" ::") != MATCH_YES) | |
6961 | { | |
a4d9b221 | 6962 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6963 | return MATCH_ERROR; |
6964 | } | |
6965 | ||
6966 | /* Check for C450. */ | |
6967 | if (!tb->nopass && proc_if == NULL) | |
6968 | { | |
6969 | gfc_error("NOPASS or explicit interface required at %C"); | |
6970 | return MATCH_ERROR; | |
6971 | } | |
6972 | ||
524af0d6 | 6973 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6974 | return MATCH_ERROR; |
6975 | ||
713485cc JW |
6976 | /* Match PPC names. */ |
6977 | ts = current_ts; | |
6978 | for(num=1;;num++) | |
6979 | { | |
6980 | m = gfc_match_name (name); | |
6981 | if (m == MATCH_NO) | |
6982 | goto syntax; | |
6983 | else if (m == MATCH_ERROR) | |
6984 | return m; | |
6985 | ||
524af0d6 | 6986 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6987 | return MATCH_ERROR; |
6988 | ||
6989 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6990 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6991 | return MATCH_ERROR; |
6992 | ||
524af0d6 | 6993 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6994 | return MATCH_ERROR; |
6995 | ||
524af0d6 | 6996 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6997 | return MATCH_ERROR; |
6998 | ||
2be03814 TB |
6999 | if (num == 1) |
7000 | c->tb = tb; | |
7001 | else | |
7002 | { | |
7003 | c->tb = XCNEW (gfc_typebound_proc); | |
7004 | c->tb->where = gfc_current_locus; | |
7005 | *c->tb = *tb; | |
7006 | } | |
90661f26 | 7007 | |
713485cc JW |
7008 | /* Set interface. */ |
7009 | if (proc_if != NULL) | |
7010 | { | |
7011 | c->ts.interface = proc_if; | |
7012 | c->attr.untyped = 1; | |
7013 | c->attr.if_source = IFSRC_IFBODY; | |
7014 | } | |
7015 | else if (ts.type != BT_UNKNOWN) | |
7016 | { | |
7017 | c->ts = ts; | |
7018 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 7019 | c->ts.interface->result = c->ts.interface; |
713485cc | 7020 | c->ts.interface->ts = ts; |
d91909c0 | 7021 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 7022 | c->ts.interface->attr.function = 1; |
d91909c0 | 7023 | c->attr.function = 1; |
713485cc JW |
7024 | c->attr.if_source = IFSRC_UNKNOWN; |
7025 | } | |
7026 | ||
7027 | if (gfc_match (" =>") == MATCH_YES) | |
7028 | { | |
80f95228 | 7029 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
7030 | if (m != MATCH_YES) |
7031 | { | |
7032 | gfc_free_expr (initializer); | |
7033 | return m; | |
7034 | } | |
7035 | c->initializer = initializer; | |
7036 | } | |
7037 | ||
7038 | if (gfc_match_eos () == MATCH_YES) | |
7039 | return MATCH_YES; | |
7040 | if (gfc_match_char (',') != MATCH_YES) | |
7041 | goto syntax; | |
7042 | } | |
7043 | ||
7044 | syntax: | |
7045 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
7046 | return MATCH_ERROR; | |
7047 | } | |
7048 | ||
7049 | ||
69773742 JW |
7050 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
7051 | ||
7052 | static match | |
7053 | match_procedure_in_interface (void) | |
7054 | { | |
7055 | match m; | |
7056 | gfc_symbol *sym; | |
7057 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 7058 | locus old_locus; |
69773742 JW |
7059 | |
7060 | if (current_interface.type == INTERFACE_NAMELESS | |
7061 | || current_interface.type == INTERFACE_ABSTRACT) | |
7062 | { | |
7063 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
7064 | return MATCH_ERROR; | |
7065 | } | |
7066 | ||
a6fcd41a TB |
7067 | /* Check if the F2008 optional double colon appears. */ |
7068 | gfc_gobble_whitespace (); | |
7069 | old_locus = gfc_current_locus; | |
7070 | if (gfc_match ("::") == MATCH_YES) | |
7071 | { | |
524af0d6 JB |
7072 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7073 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
7074 | return MATCH_ERROR; |
7075 | } | |
7076 | else | |
7077 | gfc_current_locus = old_locus; | |
7078 | ||
69773742 JW |
7079 | for(;;) |
7080 | { | |
7081 | m = gfc_match_name (name); | |
7082 | if (m == MATCH_NO) | |
7083 | goto syntax; | |
7084 | else if (m == MATCH_ERROR) | |
7085 | return m; | |
7086 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
7087 | return MATCH_ERROR; | |
7088 | ||
524af0d6 | 7089 | if (!gfc_add_interface (sym)) |
69773742 JW |
7090 | return MATCH_ERROR; |
7091 | ||
69773742 JW |
7092 | if (gfc_match_eos () == MATCH_YES) |
7093 | break; | |
7094 | if (gfc_match_char (',') != MATCH_YES) | |
7095 | goto syntax; | |
7096 | } | |
7097 | ||
7098 | return MATCH_YES; | |
7099 | ||
7100 | syntax: | |
7101 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7102 | return MATCH_ERROR; | |
7103 | } | |
7104 | ||
7105 | ||
7106 | /* General matcher for PROCEDURE declarations. */ | |
7107 | ||
30b608eb DK |
7108 | static match match_procedure_in_type (void); |
7109 | ||
69773742 JW |
7110 | match |
7111 | gfc_match_procedure (void) | |
7112 | { | |
7113 | match m; | |
7114 | ||
7115 | switch (gfc_current_state ()) | |
7116 | { | |
7117 | case COMP_NONE: | |
7118 | case COMP_PROGRAM: | |
7119 | case COMP_MODULE: | |
4668d6f9 | 7120 | case COMP_SUBMODULE: |
69773742 JW |
7121 | case COMP_SUBROUTINE: |
7122 | case COMP_FUNCTION: | |
3547d57e | 7123 | case COMP_BLOCK: |
69773742 JW |
7124 | m = match_procedure_decl (); |
7125 | break; | |
7126 | case COMP_INTERFACE: | |
7127 | m = match_procedure_in_interface (); | |
7128 | break; | |
7129 | case COMP_DERIVED: | |
713485cc JW |
7130 | m = match_ppc_decl (); |
7131 | break; | |
30b608eb DK |
7132 | case COMP_DERIVED_CONTAINS: |
7133 | m = match_procedure_in_type (); | |
7134 | break; | |
69773742 JW |
7135 | default: |
7136 | return MATCH_NO; | |
7137 | } | |
7138 | ||
7139 | if (m != MATCH_YES) | |
7140 | return m; | |
7141 | ||
524af0d6 | 7142 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
7143 | return MATCH_ERROR; |
7144 | ||
7145 | return m; | |
7146 | } | |
7147 | ||
7148 | ||
c3005b0f DK |
7149 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7150 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7151 | parser-state-stack to find out whether we're in a module. */ | |
7152 | ||
7153 | static void | |
73e42eef | 7154 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
7155 | { |
7156 | bool in_module; | |
7157 | ||
7158 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
7159 | && (gfc_state_stack->previous->state == COMP_MODULE |
7160 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
7161 | |
7162 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7163 | } | |
7164 | ||
7165 | ||
6de9cd9a DN |
7166 | /* Match a function declaration. */ |
7167 | ||
7168 | match | |
7169 | gfc_match_function_decl (void) | |
7170 | { | |
7171 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7172 | gfc_symbol *sym, *result; | |
7173 | locus old_loc; | |
7174 | match m; | |
a8b3b0b6 | 7175 | match suffix_match; |
f5acf0f2 | 7176 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
7177 | |
7178 | if (gfc_current_state () != COMP_NONE | |
7179 | && gfc_current_state () != COMP_INTERFACE | |
7180 | && gfc_current_state () != COMP_CONTAINS) | |
7181 | return MATCH_NO; | |
7182 | ||
7183 | gfc_clear_ts (¤t_ts); | |
7184 | ||
63645982 | 7185 | old_loc = gfc_current_locus; |
6de9cd9a | 7186 | |
1c8bcdf7 | 7187 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
7188 | if (m != MATCH_YES) |
7189 | { | |
63645982 | 7190 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7191 | return m; |
7192 | } | |
7193 | ||
7194 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7195 | { | |
63645982 | 7196 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7197 | return MATCH_NO; |
7198 | } | |
4668d6f9 | 7199 | |
1a492601 | 7200 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7201 | return MATCH_ERROR; |
3070bab4 | 7202 | |
524af0d6 | 7203 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7204 | sym = sym->result; |
7205 | ||
4668d6f9 PT |
7206 | if (current_attr.module_procedure) |
7207 | sym->attr.module_procedure = 1; | |
7208 | ||
6de9cd9a DN |
7209 | gfc_new_block = sym; |
7210 | ||
7211 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7212 | if (m == MATCH_NO) | |
2b9a33ae TS |
7213 | { |
7214 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 7215 | "definition at %C"); |
2b9a33ae TS |
7216 | m = MATCH_ERROR; |
7217 | goto cleanup; | |
7218 | } | |
6de9cd9a DN |
7219 | else if (m == MATCH_ERROR) |
7220 | goto cleanup; | |
7221 | ||
7222 | result = NULL; | |
7223 | ||
a8b3b0b6 CR |
7224 | /* According to the draft, the bind(c) and result clause can |
7225 | come in either order after the formal_arg_list (i.e., either | |
7226 | can be first, both can exist together or by themselves or neither | |
7227 | one). Therefore, the match_result can't match the end of the | |
7228 | string, and check for the bind(c) or result clause in either order. */ | |
7229 | found_match = gfc_match_eos (); | |
7230 | ||
7231 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7232 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7233 | not allowed for procedures. */ | |
7234 | if (sym->attr.is_bind_c == 1) | |
7235 | { | |
7236 | sym->attr.is_bind_c = 0; | |
7237 | if (sym->old_symbol != NULL) | |
7238 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7239 | "variables or common blocks", | |
7240 | &(sym->old_symbol->declared_at)); | |
7241 | else | |
7242 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7243 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
7244 | } |
7245 | ||
a8b3b0b6 | 7246 | if (found_match != MATCH_YES) |
6de9cd9a | 7247 | { |
a8b3b0b6 CR |
7248 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7249 | suffix_match = gfc_match_suffix (sym, &result); | |
7250 | if (suffix_match == MATCH_YES) | |
7251 | /* Need to get the eos now. */ | |
7252 | found_match = gfc_match_eos (); | |
7253 | else | |
7254 | found_match = suffix_match; | |
6de9cd9a DN |
7255 | } |
7256 | ||
a8b3b0b6 CR |
7257 | if(found_match != MATCH_YES) |
7258 | m = MATCH_ERROR; | |
6de9cd9a DN |
7259 | else |
7260 | { | |
a8b3b0b6 CR |
7261 | /* Make changes to the symbol. */ |
7262 | m = MATCH_ERROR; | |
f5acf0f2 | 7263 | |
524af0d6 | 7264 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 7265 | goto cleanup; |
f5acf0f2 | 7266 | |
70112e2a | 7267 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 7268 | goto cleanup; |
6de9cd9a | 7269 | |
70112e2a PT |
7270 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7271 | { | |
7272 | if(!sym->attr.module_procedure) | |
7273 | goto cleanup; | |
7274 | else | |
7275 | gfc_error_check (); | |
7276 | } | |
7277 | ||
a99d95a2 | 7278 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 7279 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
7280 | sym->declared_at = old_loc; |
7281 | if (current_ts.type != BT_UNKNOWN) | |
7282 | current_ts.kind = -1; | |
7283 | else | |
7284 | current_ts.kind = 0; | |
1c8bcdf7 | 7285 | |
a8b3b0b6 CR |
7286 | if (result == NULL) |
7287 | { | |
6de7294f | 7288 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7289 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7290 | goto cleanup; |
a8b3b0b6 CR |
7291 | sym->result = sym; |
7292 | } | |
7293 | else | |
7294 | { | |
6de7294f | 7295 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7296 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7297 | goto cleanup; |
a8b3b0b6 CR |
7298 | sym->result = result; |
7299 | } | |
7300 | ||
c3005b0f | 7301 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 7302 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 7303 | |
a8b3b0b6 CR |
7304 | return MATCH_YES; |
7305 | } | |
6de9cd9a DN |
7306 | |
7307 | cleanup: | |
63645982 | 7308 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7309 | return m; |
7310 | } | |
7311 | ||
636dff67 SK |
7312 | |
7313 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7314 | pass the name of the entry, rather than the gfc_current_block name, and | |
7315 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7316 | |
7317 | static bool | |
3a43b5b3 TB |
7318 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7319 | locus *where) | |
68ea355b PT |
7320 | { |
7321 | gfc_gsymbol *s; | |
32e8bb8e | 7322 | enum gfc_symbol_type type; |
68ea355b | 7323 | |
7389bce6 | 7324 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7325 | |
f11de7c5 TB |
7326 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7327 | name is a global identifier. */ | |
7328 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7329 | { |
55b9c612 | 7330 | s = gfc_get_gsymbol (name, false); |
f11de7c5 TB |
7331 | |
7332 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7333 | { | |
3a43b5b3 | 7334 | gfc_global_used (s, where); |
f11de7c5 TB |
7335 | return false; |
7336 | } | |
7337 | else | |
7338 | { | |
7339 | s->type = type; | |
77f8682b | 7340 | s->sym_name = name; |
3a43b5b3 | 7341 | s->where = *where; |
f11de7c5 TB |
7342 | s->defined = 1; |
7343 | s->ns = gfc_current_ns; | |
7344 | } | |
68ea355b | 7345 | } |
f11de7c5 TB |
7346 | |
7347 | /* Don't add the symbol multiple times. */ | |
7348 | if (binding_label | |
7349 | && (!gfc_notification_std (GFC_STD_F2008) | |
7350 | || strcmp (name, binding_label) != 0)) | |
7351 | { | |
55b9c612 | 7352 | s = gfc_get_gsymbol (binding_label, true); |
f11de7c5 TB |
7353 | |
7354 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7355 | { | |
3a43b5b3 | 7356 | gfc_global_used (s, where); |
f11de7c5 TB |
7357 | return false; |
7358 | } | |
7359 | else | |
7360 | { | |
7361 | s->type = type; | |
77f8682b | 7362 | s->sym_name = name; |
f11de7c5 | 7363 | s->binding_label = binding_label; |
3a43b5b3 | 7364 | s->where = *where; |
f11de7c5 TB |
7365 | s->defined = 1; |
7366 | s->ns = gfc_current_ns; | |
7367 | } | |
7368 | } | |
7369 | ||
7370 | return true; | |
68ea355b | 7371 | } |
6de9cd9a | 7372 | |
636dff67 | 7373 | |
6de9cd9a DN |
7374 | /* Match an ENTRY statement. */ |
7375 | ||
7376 | match | |
7377 | gfc_match_entry (void) | |
7378 | { | |
3d79abbd PB |
7379 | gfc_symbol *proc; |
7380 | gfc_symbol *result; | |
7381 | gfc_symbol *entry; | |
6de9cd9a DN |
7382 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7383 | gfc_compile_state state; | |
7384 | match m; | |
3d79abbd | 7385 | gfc_entry_list *el; |
c96cfa49 | 7386 | locus old_loc; |
1a492601 | 7387 | bool module_procedure; |
bc3e7a8c TB |
7388 | char peek_char; |
7389 | match is_bind_c; | |
6de9cd9a DN |
7390 | |
7391 | m = gfc_match_name (name); | |
7392 | if (m != MATCH_YES) | |
7393 | return m; | |
7394 | ||
524af0d6 | 7395 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7396 | return MATCH_ERROR; |
7397 | ||
3d79abbd | 7398 | state = gfc_current_state (); |
4c93c95a | 7399 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7400 | { |
4c93c95a FXC |
7401 | switch (state) |
7402 | { | |
7403 | case COMP_PROGRAM: | |
7404 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7405 | break; | |
7406 | case COMP_MODULE: | |
7407 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7408 | break; | |
4668d6f9 PT |
7409 | case COMP_SUBMODULE: |
7410 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7411 | break; | |
4c93c95a | 7412 | case COMP_BLOCK_DATA: |
636dff67 SK |
7413 | gfc_error ("ENTRY statement at %C cannot appear within " |
7414 | "a BLOCK DATA"); | |
4c93c95a FXC |
7415 | break; |
7416 | case COMP_INTERFACE: | |
636dff67 SK |
7417 | gfc_error ("ENTRY statement at %C cannot appear within " |
7418 | "an INTERFACE"); | |
4c93c95a | 7419 | break; |
f6288c24 FR |
7420 | case COMP_STRUCTURE: |
7421 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7422 | "a STRUCTURE block"); | |
7423 | break; | |
4c93c95a | 7424 | case COMP_DERIVED: |
636dff67 SK |
7425 | gfc_error ("ENTRY statement at %C cannot appear within " |
7426 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7427 | break; |
7428 | case COMP_IF: | |
636dff67 SK |
7429 | gfc_error ("ENTRY statement at %C cannot appear within " |
7430 | "an IF-THEN block"); | |
4c93c95a FXC |
7431 | break; |
7432 | case COMP_DO: | |
8c6a85e3 | 7433 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7434 | gfc_error ("ENTRY statement at %C cannot appear within " |
7435 | "a DO block"); | |
4c93c95a FXC |
7436 | break; |
7437 | case COMP_SELECT: | |
636dff67 SK |
7438 | gfc_error ("ENTRY statement at %C cannot appear within " |
7439 | "a SELECT block"); | |
4c93c95a FXC |
7440 | break; |
7441 | case COMP_FORALL: | |
636dff67 SK |
7442 | gfc_error ("ENTRY statement at %C cannot appear within " |
7443 | "a FORALL block"); | |
4c93c95a FXC |
7444 | break; |
7445 | case COMP_WHERE: | |
636dff67 SK |
7446 | gfc_error ("ENTRY statement at %C cannot appear within " |
7447 | "a WHERE block"); | |
4c93c95a FXC |
7448 | break; |
7449 | case COMP_CONTAINS: | |
636dff67 SK |
7450 | gfc_error ("ENTRY statement at %C cannot appear within " |
7451 | "a contained subprogram"); | |
4c93c95a FXC |
7452 | break; |
7453 | default: | |
fce523bf | 7454 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7455 | } |
3d79abbd PB |
7456 | return MATCH_ERROR; |
7457 | } | |
7458 | ||
5f0ba745 SK |
7459 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7460 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7461 | { | |
7462 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7463 | return MATCH_ERROR; | |
7464 | } | |
7465 | ||
1a492601 | 7466 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7467 | && gfc_current_ns->parent->proc_name |
7468 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7469 | == FL_MODULE; | |
1a492601 | 7470 | |
3d79abbd PB |
7471 | if (gfc_current_ns->parent != NULL |
7472 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7473 | && !module_procedure) |
3d79abbd PB |
7474 | { |
7475 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7476 | "contained procedure"); | |
7477 | return MATCH_ERROR; | |
7478 | } | |
7479 | ||
1a492601 PT |
7480 | /* Module function entries need special care in get_proc_name |
7481 | because previous references within the function will have | |
7482 | created symbols attached to the current namespace. */ | |
7483 | if (get_proc_name (name, &entry, | |
7484 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7485 | && module_procedure)) |
6de9cd9a DN |
7486 | return MATCH_ERROR; |
7487 | ||
3d79abbd PB |
7488 | proc = gfc_current_block (); |
7489 | ||
bc3e7a8c TB |
7490 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7491 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7492 | not allowed for procedures. */ | |
7493 | if (entry->attr.is_bind_c == 1) | |
7494 | { | |
7495 | entry->attr.is_bind_c = 0; | |
7496 | if (entry->old_symbol != NULL) | |
7497 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7498 | "variables or common blocks", | |
7499 | &(entry->old_symbol->declared_at)); | |
7500 | else | |
7501 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7502 | "variables or common blocks", &gfc_current_locus); | |
7503 | } | |
f5acf0f2 | 7504 | |
bc3e7a8c TB |
7505 | /* Check what next non-whitespace character is so we can tell if there |
7506 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7507 | old_loc = gfc_current_locus; |
bc3e7a8c | 7508 | gfc_gobble_whitespace (); |
8fc541d3 | 7509 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7510 | |
3d79abbd | 7511 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7512 | { |
6de9cd9a DN |
7513 | m = gfc_match_formal_arglist (entry, 0, 1); |
7514 | if (m != MATCH_YES) | |
7515 | return MATCH_ERROR; | |
7516 | ||
1eabf70a TB |
7517 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7518 | never be an internal procedure. */ | |
7519 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7520 | if (is_bind_c == MATCH_ERROR) |
7521 | return MATCH_ERROR; | |
7522 | if (is_bind_c == MATCH_YES) | |
7523 | { | |
7524 | if (peek_char != '(') | |
7525 | { | |
7526 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7527 | return MATCH_ERROR; | |
7528 | } | |
89508a3f SK |
7529 | |
7530 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, | |
7531 | &(entry->declared_at), 1)) | |
7532 | return MATCH_ERROR; | |
0a524296 | 7533 | |
bc3e7a8c TB |
7534 | } |
7535 | ||
f11de7c5 | 7536 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7537 | && !add_global_entry (name, entry->binding_label, true, |
7538 | &old_loc)) | |
f11de7c5 TB |
7539 | return MATCH_ERROR; |
7540 | ||
7541 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7542 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7543 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7544 | return MATCH_ERROR; |
3d79abbd PB |
7545 | } |
7546 | else | |
7547 | { | |
c96cfa49 | 7548 | /* An entry in a function. |
636dff67 SK |
7549 | We need to take special care because writing |
7550 | ENTRY f() | |
7551 | as | |
7552 | ENTRY f | |
7553 | is allowed, whereas | |
7554 | ENTRY f() RESULT (r) | |
7555 | can't be written as | |
7556 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7557 | if (gfc_match_eos () == MATCH_YES) |
7558 | { | |
7559 | gfc_current_locus = old_loc; | |
7560 | /* Match the empty argument list, and add the interface to | |
7561 | the symbol. */ | |
7562 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7563 | } | |
7564 | else | |
7565 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7566 | ||
6de9cd9a DN |
7567 | if (m != MATCH_YES) |
7568 | return MATCH_ERROR; | |
7569 | ||
6de9cd9a DN |
7570 | result = NULL; |
7571 | ||
7572 | if (gfc_match_eos () == MATCH_YES) | |
7573 | { | |
524af0d6 JB |
7574 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7575 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7576 | return MATCH_ERROR; |
7577 | ||
d198b59a | 7578 | entry->result = entry; |
6de9cd9a DN |
7579 | } |
7580 | else | |
7581 | { | |
bc3e7a8c | 7582 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7583 | if (m == MATCH_NO) |
7584 | gfc_syntax_error (ST_ENTRY); | |
7585 | if (m != MATCH_YES) | |
7586 | return MATCH_ERROR; | |
7587 | ||
bc3e7a8c TB |
7588 | if (result) |
7589 | { | |
524af0d6 JB |
7590 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7591 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7592 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7593 | return MATCH_ERROR; |
7594 | entry->result = result; | |
7595 | } | |
7596 | else | |
7597 | { | |
524af0d6 JB |
7598 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7599 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7600 | return MATCH_ERROR; |
7601 | entry->result = entry; | |
7602 | } | |
6de9cd9a | 7603 | } |
f11de7c5 TB |
7604 | |
7605 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7606 | && !add_global_entry (name, entry->binding_label, false, |
7607 | &old_loc)) | |
f11de7c5 | 7608 | return MATCH_ERROR; |
6de9cd9a DN |
7609 | } |
7610 | ||
7611 | if (gfc_match_eos () != MATCH_YES) | |
7612 | { | |
7613 | gfc_syntax_error (ST_ENTRY); | |
7614 | return MATCH_ERROR; | |
7615 | } | |
7616 | ||
89508a3f SK |
7617 | /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */ |
7618 | if (proc->attr.elemental && entry->attr.is_bind_c) | |
7619 | { | |
7620 | gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an " | |
7621 | "elemental procedure", &entry->declared_at); | |
7622 | return MATCH_ERROR; | |
7623 | } | |
7624 | ||
3d79abbd PB |
7625 | entry->attr.recursive = proc->attr.recursive; |
7626 | entry->attr.elemental = proc->attr.elemental; | |
7627 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7628 | |
3d79abbd PB |
7629 | el = gfc_get_entry_list (); |
7630 | el->sym = entry; | |
7631 | el->next = gfc_current_ns->entries; | |
7632 | gfc_current_ns->entries = el; | |
7633 | if (el->next) | |
7634 | el->id = el->next->id + 1; | |
7635 | else | |
7636 | el->id = 1; | |
6de9cd9a | 7637 | |
3d79abbd PB |
7638 | new_st.op = EXEC_ENTRY; |
7639 | new_st.ext.entry = el; | |
7640 | ||
7641 | return MATCH_YES; | |
6de9cd9a DN |
7642 | } |
7643 | ||
7644 | ||
7645 | /* Match a subroutine statement, including optional prefixes. */ | |
7646 | ||
7647 | match | |
7648 | gfc_match_subroutine (void) | |
7649 | { | |
7650 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7651 | gfc_symbol *sym; | |
7652 | match m; | |
a8b3b0b6 CR |
7653 | match is_bind_c; |
7654 | char peek_char; | |
1eabf70a | 7655 | bool allow_binding_name; |
f28c46cd | 7656 | locus loc; |
6de9cd9a DN |
7657 | |
7658 | if (gfc_current_state () != COMP_NONE | |
7659 | && gfc_current_state () != COMP_INTERFACE | |
7660 | && gfc_current_state () != COMP_CONTAINS) | |
7661 | return MATCH_NO; | |
7662 | ||
1c8bcdf7 | 7663 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7664 | if (m != MATCH_YES) |
7665 | return m; | |
7666 | ||
7667 | m = gfc_match ("subroutine% %n", name); | |
7668 | if (m != MATCH_YES) | |
7669 | return m; | |
7670 | ||
1a492601 | 7671 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7672 | return MATCH_ERROR; |
3070bab4 | 7673 | |
7fcd5ad5 | 7674 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7675 | the symbol existed before. */ |
7fcd5ad5 TB |
7676 | sym->declared_at = gfc_current_locus; |
7677 | ||
4668d6f9 PT |
7678 | if (current_attr.module_procedure) |
7679 | sym->attr.module_procedure = 1; | |
7680 | ||
524af0d6 | 7681 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7682 | sym = sym->result; |
7683 | ||
6de9cd9a DN |
7684 | gfc_new_block = sym; |
7685 | ||
a8b3b0b6 | 7686 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7687 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7688 | gfc_gobble_whitespace (); |
8fc541d3 | 7689 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7690 | |
524af0d6 | 7691 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7692 | return MATCH_ERROR; |
7693 | ||
7694 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7695 | return MATCH_ERROR; | |
7696 | ||
a8b3b0b6 CR |
7697 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7698 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7699 | not allowed for procedures. */ | |
7700 | if (sym->attr.is_bind_c == 1) | |
7701 | { | |
7702 | sym->attr.is_bind_c = 0; | |
7703 | if (sym->old_symbol != NULL) | |
7704 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7705 | "variables or common blocks", | |
7706 | &(sym->old_symbol->declared_at)); | |
7707 | else | |
7708 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7709 | "variables or common blocks", &gfc_current_locus); | |
7710 | } | |
1eabf70a TB |
7711 | |
7712 | /* C binding names are not allowed for internal procedures. */ | |
7713 | if (gfc_current_state () == COMP_CONTAINS | |
7714 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7715 | allow_binding_name = false; | |
7716 | else | |
7717 | allow_binding_name = true; | |
7718 | ||
a8b3b0b6 CR |
7719 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7720 | so, then we need to make sure it's all correct. If it doesn't, | |
7721 | we still need to continue matching the rest of the subroutine line. */ | |
f28c46cd SK |
7722 | gfc_gobble_whitespace (); |
7723 | loc = gfc_current_locus; | |
1eabf70a | 7724 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7725 | if (is_bind_c == MATCH_ERROR) |
7726 | { | |
7727 | /* There was an attempt at the bind(c), but it was wrong. An | |
7728 | error message should have been printed w/in the gfc_match_bind_c | |
7729 | so here we'll just return the MATCH_ERROR. */ | |
7730 | return MATCH_ERROR; | |
7731 | } | |
7732 | ||
7733 | if (is_bind_c == MATCH_YES) | |
7734 | { | |
f28c46cd SK |
7735 | gfc_formal_arglist *arg; |
7736 | ||
1eabf70a | 7737 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7738 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7739 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7740 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7741 | "at %L may not be specified for an internal " | |
7742 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7743 | return MATCH_ERROR; |
7744 | ||
a8b3b0b6 CR |
7745 | if (peek_char != '(') |
7746 | { | |
7747 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7748 | return MATCH_ERROR; | |
7749 | } | |
f28c46cd SK |
7750 | |
7751 | /* Scan the dummy arguments for an alternate return. */ | |
7752 | for (arg = sym->formal; arg; arg = arg->next) | |
7753 | if (!arg->sym) | |
7754 | { | |
7755 | gfc_error ("Alternate return dummy argument cannot appear in a " | |
7756 | "SUBROUTINE with the BIND(C) attribute at %L", &loc); | |
7757 | return MATCH_ERROR; | |
7758 | } | |
7759 | ||
7760 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
7761 | return MATCH_ERROR; |
7762 | } | |
f5acf0f2 | 7763 | |
6de9cd9a DN |
7764 | if (gfc_match_eos () != MATCH_YES) |
7765 | { | |
7766 | gfc_syntax_error (ST_SUBROUTINE); | |
7767 | return MATCH_ERROR; | |
7768 | } | |
7769 | ||
524af0d6 | 7770 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7771 | { |
7772 | if(!sym->attr.module_procedure) | |
7773 | return MATCH_ERROR; | |
7774 | else | |
7775 | gfc_error_check (); | |
7776 | } | |
6de9cd9a | 7777 | |
c3005b0f | 7778 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7779 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7780 | |
6de9cd9a DN |
7781 | return MATCH_YES; |
7782 | } | |
7783 | ||
7784 | ||
3b37ccd4 FXC |
7785 | /* Check that the NAME identifier in a BIND attribute or statement |
7786 | is conform to C identifier rules. */ | |
7787 | ||
7788 | match | |
7789 | check_bind_name_identifier (char **name) | |
7790 | { | |
7791 | char *n = *name, *p; | |
7792 | ||
7793 | /* Remove leading spaces. */ | |
7794 | while (*n == ' ') | |
7795 | n++; | |
7796 | ||
7797 | /* On an empty string, free memory and set name to NULL. */ | |
7798 | if (*n == '\0') | |
7799 | { | |
7800 | free (*name); | |
7801 | *name = NULL; | |
7802 | return MATCH_YES; | |
7803 | } | |
7804 | ||
7805 | /* Remove trailing spaces. */ | |
7806 | p = n + strlen(n) - 1; | |
7807 | while (*p == ' ') | |
7808 | *(p--) = '\0'; | |
7809 | ||
7810 | /* Insert the identifier into the symbol table. */ | |
7811 | p = xstrdup (n); | |
7812 | free (*name); | |
7813 | *name = p; | |
7814 | ||
7815 | /* Now check that identifier is valid under C rules. */ | |
7816 | if (ISDIGIT (*p)) | |
7817 | { | |
7818 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7819 | return MATCH_ERROR; | |
7820 | } | |
7821 | ||
7822 | for (; *p; p++) | |
7823 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7824 | { | |
7825 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7826 | return MATCH_ERROR; | |
7827 | } | |
7828 | ||
7829 | return MATCH_YES; | |
7830 | } | |
7831 | ||
7832 | ||
a8b3b0b6 CR |
7833 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7834 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7835 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7836 | encounter the BIND(C) before the declaration itself. Return |
7837 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7838 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7839 | or MATCH_YES if the specifier was correct and the binding label and | |
7840 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7841 | current_ts. If allow_binding_name is false, no binding name may be |
7842 | given. */ | |
a8b3b0b6 CR |
7843 | |
7844 | match | |
1eabf70a | 7845 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7846 | { |
3b37ccd4 FXC |
7847 | char *binding_label = NULL; |
7848 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7849 | |
f5acf0f2 | 7850 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7851 | specifier or not. */ |
7852 | has_name_equals = 0; | |
7853 | ||
a8b3b0b6 CR |
7854 | /* This much we have to be able to match, in this order, if |
7855 | there is a bind(c) label. */ | |
7856 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7857 | return MATCH_NO; | |
7858 | ||
7859 | /* Now see if there is a binding label, or if we've reached the | |
7860 | end of the bind(c) attribute without one. */ | |
7861 | if (gfc_match_char (',') == MATCH_YES) | |
7862 | { | |
7863 | if (gfc_match (" name = ") != MATCH_YES) | |
7864 | { | |
7865 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7866 | "at %C"); | |
7867 | /* should give an error message here */ | |
7868 | return MATCH_ERROR; | |
7869 | } | |
7870 | ||
7871 | has_name_equals = 1; | |
7872 | ||
3b37ccd4 FXC |
7873 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7874 | { | |
7875 | gfc_free_expr (e); | |
7876 | return MATCH_ERROR; | |
7877 | } | |
f5acf0f2 | 7878 | |
3b37ccd4 | 7879 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7880 | { |
3b37ccd4 FXC |
7881 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7882 | gfc_free_expr (e); | |
7883 | return MATCH_ERROR; | |
a8b3b0b6 | 7884 | } |
3b37ccd4 FXC |
7885 | |
7886 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7887 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7888 | { |
3b37ccd4 FXC |
7889 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7890 | "default character kind"); | |
7891 | gfc_free_expr(e); | |
7892 | return MATCH_ERROR; | |
a8b3b0b6 | 7893 | } |
3b37ccd4 FXC |
7894 | |
7895 | // Get a C string from the Fortran string constant | |
7896 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7897 | e->value.character.length); | |
7898 | gfc_free_expr(e); | |
7899 | ||
7900 | // Check that it is valid (old gfc_match_name_C) | |
7901 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7902 | return MATCH_ERROR; | |
7903 | } | |
a8b3b0b6 CR |
7904 | |
7905 | /* Get the required right paren. */ | |
7906 | if (gfc_match_char (')') != MATCH_YES) | |
7907 | { | |
7908 | gfc_error ("Missing closing paren for binding label at %C"); | |
7909 | return MATCH_ERROR; | |
7910 | } | |
7911 | ||
1eabf70a TB |
7912 | if (has_name_equals && !allow_binding_name) |
7913 | { | |
7914 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7915 | return MATCH_ERROR; | |
7916 | } | |
7917 | ||
7918 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7919 | { | |
7920 | gfc_error ("For dummy procedure %s, no binding name is " | |
7921 | "allowed in BIND(C) at %C", sym->name); | |
7922 | return MATCH_ERROR; | |
7923 | } | |
7924 | ||
7925 | ||
a8b3b0b6 CR |
7926 | /* Save the binding label to the symbol. If sym is null, we're |
7927 | probably matching the typespec attributes of a declaration and | |
7928 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7929 | if (binding_label) |
a8b3b0b6 CR |
7930 | { |
7931 | if (sym != NULL) | |
62603fae | 7932 | sym->binding_label = binding_label; |
a8b3b0b6 | 7933 | else |
62603fae | 7934 | curr_binding_label = binding_label; |
a8b3b0b6 | 7935 | } |
1eabf70a | 7936 | else if (allow_binding_name) |
a8b3b0b6 CR |
7937 | { |
7938 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7939 | can set the label for it here. |
7940 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7941 | created. */ |
a8b3b0b6 | 7942 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7943 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7944 | } |
9e1d712c | 7945 | |
129d15a3 JW |
7946 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7947 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7948 | { |
7949 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7950 | return MATCH_ERROR; | |
7951 | } | |
7952 | ||
a8b3b0b6 CR |
7953 | return MATCH_YES; |
7954 | } | |
7955 | ||
7956 | ||
1f2959f0 | 7957 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7958 | |
7959 | static int | |
7960 | contained_procedure (void) | |
7961 | { | |
083de129 | 7962 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7963 | |
083de129 TB |
7964 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7965 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7966 | return 1; | |
ddc9ce91 TS |
7967 | |
7968 | return 0; | |
7969 | } | |
7970 | ||
d51347f9 | 7971 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7972 | interoperable with the corresponding C enumeration type, making |
7973 | sure that -fshort-enums is honored. */ | |
7974 | ||
7975 | static void | |
7976 | set_enum_kind(void) | |
7977 | { | |
7978 | enumerator_history *current_history = NULL; | |
7979 | int kind; | |
7980 | int i; | |
7981 | ||
7982 | if (max_enum == NULL || enum_history == NULL) | |
7983 | return; | |
7984 | ||
cab129d1 | 7985 | if (!flag_short_enums) |
d51347f9 TB |
7986 | return; |
7987 | ||
25d8f0a2 TS |
7988 | i = 0; |
7989 | do | |
7990 | { | |
7991 | kind = gfc_integer_kinds[i++].kind; | |
7992 | } | |
d51347f9 | 7993 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7994 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7995 | kind) != ARITH_OK); | |
7996 | ||
7997 | current_history = enum_history; | |
7998 | while (current_history != NULL) | |
7999 | { | |
8000 | current_history->sym->ts.kind = kind; | |
8001 | current_history = current_history->next; | |
8002 | } | |
8003 | } | |
8004 | ||
636dff67 | 8005 | |
6de9cd9a | 8006 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
8007 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
8008 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
8009 | |
8010 | match | |
636dff67 | 8011 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
8012 | { |
8013 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8014 | gfc_compile_state state; | |
8015 | locus old_loc; | |
8016 | const char *block_name; | |
8017 | const char *target; | |
ddc9ce91 | 8018 | int eos_ok; |
6de9cd9a | 8019 | match m; |
0cab6b73 TK |
8020 | gfc_namespace *parent_ns, *ns, *prev_ns; |
8021 | gfc_namespace **nsp; | |
63af1586 | 8022 | bool abreviated_modproc_decl = false; |
874108a9 | 8023 | bool got_matching_end = false; |
6de9cd9a | 8024 | |
63645982 | 8025 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8026 | if (gfc_match ("end") != MATCH_YES) |
8027 | return MATCH_NO; | |
8028 | ||
8029 | state = gfc_current_state (); | |
636dff67 SK |
8030 | block_name = gfc_current_block () == NULL |
8031 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 8032 | |
03af1e4c | 8033 | switch (state) |
6de9cd9a | 8034 | { |
03af1e4c DK |
8035 | case COMP_ASSOCIATE: |
8036 | case COMP_BLOCK: | |
2eb3745a | 8037 | if (gfc_str_startswith (block_name, "block@")) |
03af1e4c DK |
8038 | block_name = NULL; |
8039 | break; | |
8040 | ||
8041 | case COMP_CONTAINS: | |
8042 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 8043 | state = gfc_state_stack->previous->state; |
636dff67 SK |
8044 | block_name = gfc_state_stack->previous->sym == NULL |
8045 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
8046 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
8047 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
8048 | break; |
8049 | ||
8050 | default: | |
8051 | break; | |
6de9cd9a DN |
8052 | } |
8053 | ||
63af1586 PT |
8054 | if (!abreviated_modproc_decl) |
8055 | abreviated_modproc_decl = gfc_current_block () | |
8056 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 8057 | |
6de9cd9a DN |
8058 | switch (state) |
8059 | { | |
8060 | case COMP_NONE: | |
8061 | case COMP_PROGRAM: | |
8062 | *st = ST_END_PROGRAM; | |
8063 | target = " program"; | |
ddc9ce91 | 8064 | eos_ok = 1; |
6de9cd9a DN |
8065 | break; |
8066 | ||
8067 | case COMP_SUBROUTINE: | |
8068 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 8069 | if (!abreviated_modproc_decl) |
6de9cd9a | 8070 | target = " subroutine"; |
4668d6f9 PT |
8071 | else |
8072 | target = " procedure"; | |
ddc9ce91 | 8073 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
8074 | break; |
8075 | ||
8076 | case COMP_FUNCTION: | |
8077 | *st = ST_END_FUNCTION; | |
4668d6f9 | 8078 | if (!abreviated_modproc_decl) |
6de9cd9a | 8079 | target = " function"; |
4668d6f9 PT |
8080 | else |
8081 | target = " procedure"; | |
ddc9ce91 | 8082 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
8083 | break; |
8084 | ||
8085 | case COMP_BLOCK_DATA: | |
8086 | *st = ST_END_BLOCK_DATA; | |
8087 | target = " block data"; | |
ddc9ce91 | 8088 | eos_ok = 1; |
6de9cd9a DN |
8089 | break; |
8090 | ||
8091 | case COMP_MODULE: | |
8092 | *st = ST_END_MODULE; | |
8093 | target = " module"; | |
ddc9ce91 | 8094 | eos_ok = 1; |
6de9cd9a DN |
8095 | break; |
8096 | ||
4668d6f9 PT |
8097 | case COMP_SUBMODULE: |
8098 | *st = ST_END_SUBMODULE; | |
8099 | target = " submodule"; | |
8100 | eos_ok = 1; | |
8101 | break; | |
8102 | ||
6de9cd9a DN |
8103 | case COMP_INTERFACE: |
8104 | *st = ST_END_INTERFACE; | |
8105 | target = " interface"; | |
ddc9ce91 | 8106 | eos_ok = 0; |
6de9cd9a DN |
8107 | break; |
8108 | ||
f6288c24 FR |
8109 | case COMP_MAP: |
8110 | *st = ST_END_MAP; | |
8111 | target = " map"; | |
8112 | eos_ok = 0; | |
8113 | break; | |
8114 | ||
8115 | case COMP_UNION: | |
8116 | *st = ST_END_UNION; | |
8117 | target = " union"; | |
8118 | eos_ok = 0; | |
8119 | break; | |
8120 | ||
8121 | case COMP_STRUCTURE: | |
8122 | *st = ST_END_STRUCTURE; | |
8123 | target = " structure"; | |
8124 | eos_ok = 0; | |
8125 | break; | |
8126 | ||
6de9cd9a | 8127 | case COMP_DERIVED: |
30b608eb | 8128 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
8129 | *st = ST_END_TYPE; |
8130 | target = " type"; | |
ddc9ce91 | 8131 | eos_ok = 0; |
6de9cd9a DN |
8132 | break; |
8133 | ||
03af1e4c DK |
8134 | case COMP_ASSOCIATE: |
8135 | *st = ST_END_ASSOCIATE; | |
8136 | target = " associate"; | |
8137 | eos_ok = 0; | |
8138 | break; | |
8139 | ||
9abe5e56 DK |
8140 | case COMP_BLOCK: |
8141 | *st = ST_END_BLOCK; | |
8142 | target = " block"; | |
8143 | eos_ok = 0; | |
8144 | break; | |
8145 | ||
6de9cd9a DN |
8146 | case COMP_IF: |
8147 | *st = ST_ENDIF; | |
8148 | target = " if"; | |
ddc9ce91 | 8149 | eos_ok = 0; |
6de9cd9a DN |
8150 | break; |
8151 | ||
8152 | case COMP_DO: | |
8c6a85e3 | 8153 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
8154 | *st = ST_ENDDO; |
8155 | target = " do"; | |
ddc9ce91 | 8156 | eos_ok = 0; |
6de9cd9a DN |
8157 | break; |
8158 | ||
d0a4a61c TB |
8159 | case COMP_CRITICAL: |
8160 | *st = ST_END_CRITICAL; | |
8161 | target = " critical"; | |
8162 | eos_ok = 0; | |
8163 | break; | |
8164 | ||
6de9cd9a | 8165 | case COMP_SELECT: |
cf2b3c22 | 8166 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
8167 | *st = ST_END_SELECT; |
8168 | target = " select"; | |
ddc9ce91 | 8169 | eos_ok = 0; |
6de9cd9a DN |
8170 | break; |
8171 | ||
8172 | case COMP_FORALL: | |
8173 | *st = ST_END_FORALL; | |
8174 | target = " forall"; | |
ddc9ce91 | 8175 | eos_ok = 0; |
6de9cd9a DN |
8176 | break; |
8177 | ||
8178 | case COMP_WHERE: | |
8179 | *st = ST_END_WHERE; | |
8180 | target = " where"; | |
ddc9ce91 | 8181 | eos_ok = 0; |
6de9cd9a DN |
8182 | break; |
8183 | ||
25d8f0a2 TS |
8184 | case COMP_ENUM: |
8185 | *st = ST_END_ENUM; | |
8186 | target = " enum"; | |
8187 | eos_ok = 0; | |
8188 | last_initializer = NULL; | |
8189 | set_enum_kind (); | |
8190 | gfc_free_enum_history (); | |
8191 | break; | |
8192 | ||
6de9cd9a DN |
8193 | default: |
8194 | gfc_error ("Unexpected END statement at %C"); | |
8195 | goto cleanup; | |
8196 | } | |
8197 | ||
3a43b5b3 | 8198 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8199 | if (gfc_match_eos () == MATCH_YES) |
8200 | { | |
272001a2 TB |
8201 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8202 | { | |
524af0d6 | 8203 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 8204 | "instead of %s statement at %L", |
4668d6f9 PT |
8205 | abreviated_modproc_decl ? "END PROCEDURE" |
8206 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
8207 | goto cleanup; |
8208 | } | |
8209 | else if (!eos_ok) | |
6de9cd9a | 8210 | { |
66e4ab31 | 8211 | /* We would have required END [something]. */ |
59ce85b5 TS |
8212 | gfc_error ("%s statement expected at %L", |
8213 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
8214 | goto cleanup; |
8215 | } | |
8216 | ||
8217 | return MATCH_YES; | |
8218 | } | |
8219 | ||
8220 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8221 | if (gfc_match (target) != MATCH_YES) | |
8222 | { | |
4668d6f9 PT |
8223 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8224 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
8225 | goto cleanup; |
8226 | } | |
874108a9 AV |
8227 | else |
8228 | got_matching_end = true; | |
6de9cd9a | 8229 | |
3a43b5b3 | 8230 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8231 | /* If we're at the end, make sure a block name wasn't required. */ |
8232 | if (gfc_match_eos () == MATCH_YES) | |
8233 | { | |
8234 | ||
690af379 | 8235 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 8236 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 8237 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
8238 | return MATCH_YES; |
8239 | ||
9abe5e56 | 8240 | if (!block_name) |
6de9cd9a DN |
8241 | return MATCH_YES; |
8242 | ||
c4100eae | 8243 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 8244 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
8245 | |
8246 | return MATCH_ERROR; | |
8247 | } | |
8248 | ||
8249 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8250 | if (*st == ST_END_INTERFACE) | |
8251 | return gfc_match_end_interface (); | |
8252 | ||
66e4ab31 SK |
8253 | /* We haven't hit the end of statement, so what is left must be an |
8254 | end-name. */ | |
6de9cd9a DN |
8255 | m = gfc_match_space (); |
8256 | if (m == MATCH_YES) | |
8257 | m = gfc_match_name (name); | |
8258 | ||
8259 | if (m == MATCH_NO) | |
8260 | gfc_error ("Expected terminating name at %C"); | |
8261 | if (m != MATCH_YES) | |
8262 | goto cleanup; | |
8263 | ||
8264 | if (block_name == NULL) | |
8265 | goto syntax; | |
8266 | ||
3d5dc929 PT |
8267 | /* We have to pick out the declared submodule name from the composite |
8268 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8269 | if (state == COMP_SUBMODULE) | |
8270 | block_name = strchr (block_name, '.') + 1; | |
8271 | ||
3070bab4 | 8272 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 8273 | { |
c4100eae | 8274 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
8275 | gfc_ascii_statement (*st)); |
8276 | goto cleanup; | |
8277 | } | |
3070bab4 JW |
8278 | /* Procedure pointer as function result. */ |
8279 | else if (strcmp (block_name, "ppr@") == 0 | |
8280 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8281 | { | |
c4100eae | 8282 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
8283 | gfc_current_block ()->ns->proc_name->name, |
8284 | gfc_ascii_statement (*st)); | |
8285 | goto cleanup; | |
8286 | } | |
6de9cd9a DN |
8287 | |
8288 | if (gfc_match_eos () == MATCH_YES) | |
8289 | return MATCH_YES; | |
8290 | ||
8291 | syntax: | |
8292 | gfc_syntax_error (*st); | |
8293 | ||
8294 | cleanup: | |
63645982 | 8295 | gfc_current_locus = old_loc; |
0cab6b73 TK |
8296 | |
8297 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8298 | Remove it from the parent namespace's sibling list. */ | |
8299 | ||
874108a9 | 8300 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
8301 | { |
8302 | parent_ns = gfc_current_ns->parent; | |
8303 | ||
8304 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8305 | ||
8306 | prev_ns = NULL; | |
8307 | ns = *nsp; | |
8308 | while (ns) | |
8309 | { | |
8310 | if (ns == gfc_current_ns) | |
8311 | { | |
8312 | if (prev_ns == NULL) | |
8313 | *nsp = NULL; | |
8314 | else | |
8315 | prev_ns->sibling = ns->sibling; | |
8316 | } | |
8317 | prev_ns = ns; | |
8318 | ns = ns->sibling; | |
8319 | } | |
874108a9 | 8320 | |
0cab6b73 TK |
8321 | gfc_free_namespace (gfc_current_ns); |
8322 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
8323 | gfc_state_stack = gfc_state_stack->previous; |
8324 | state = gfc_current_state (); | |
0cab6b73 TK |
8325 | } |
8326 | ||
6de9cd9a DN |
8327 | return MATCH_ERROR; |
8328 | } | |
8329 | ||
8330 | ||
8331 | ||
8332 | /***************** Attribute declaration statements ****************/ | |
8333 | ||
8334 | /* Set the attribute of a single variable. */ | |
8335 | ||
8336 | static match | |
8337 | attr_decl1 (void) | |
8338 | { | |
8339 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8340 | gfc_array_spec *as; | |
97440db5 ML |
8341 | |
8342 | /* Workaround -Wmaybe-uninitialized false positive during | |
8343 | profiledbootstrap by initializing them. */ | |
8344 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8345 | locus var_locus; |
8346 | match m; | |
8347 | ||
8348 | as = NULL; | |
8349 | ||
8350 | m = gfc_match_name (name); | |
8351 | if (m != MATCH_YES) | |
8352 | goto cleanup; | |
8353 | ||
08a6b8e0 | 8354 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8355 | return MATCH_ERROR; |
8356 | ||
524af0d6 | 8357 | if (!check_function_name (name)) |
bb9de0c4 JW |
8358 | { |
8359 | m = MATCH_ERROR; | |
8360 | goto cleanup; | |
8361 | } | |
f5acf0f2 | 8362 | |
63645982 | 8363 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8364 | |
8365 | /* Deal with possible array specification for certain attributes. */ | |
8366 | if (current_attr.dimension | |
be59db2d | 8367 | || current_attr.codimension |
6de9cd9a DN |
8368 | || current_attr.allocatable |
8369 | || current_attr.pointer | |
8370 | || current_attr.target) | |
8371 | { | |
be59db2d TB |
8372 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8373 | !current_attr.dimension | |
8374 | && !current_attr.pointer | |
8375 | && !current_attr.target); | |
6de9cd9a DN |
8376 | if (m == MATCH_ERROR) |
8377 | goto cleanup; | |
8378 | ||
8379 | if (current_attr.dimension && m == MATCH_NO) | |
8380 | { | |
636dff67 SK |
8381 | gfc_error ("Missing array specification at %L in DIMENSION " |
8382 | "statement", &var_locus); | |
6de9cd9a DN |
8383 | m = MATCH_ERROR; |
8384 | goto cleanup; | |
8385 | } | |
8386 | ||
1283ab12 TB |
8387 | if (current_attr.dimension && sym->value) |
8388 | { | |
8389 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8390 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8391 | m = MATCH_ERROR; |
8392 | goto cleanup; | |
8393 | } | |
8394 | ||
be59db2d TB |
8395 | if (current_attr.codimension && m == MATCH_NO) |
8396 | { | |
8397 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8398 | "statement", &var_locus); | |
8399 | m = MATCH_ERROR; | |
8400 | goto cleanup; | |
8401 | } | |
8402 | ||
6de9cd9a DN |
8403 | if ((current_attr.allocatable || current_attr.pointer) |
8404 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8405 | { | |
636dff67 | 8406 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8407 | m = MATCH_ERROR; |
8408 | goto cleanup; | |
8409 | } | |
8410 | } | |
8411 | ||
2e23972e JW |
8412 | /* Update symbol table. DIMENSION attribute is set in |
8413 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8414 | to the first component, or '_data' field. */ |
d40477b4 | 8415 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8416 | { |
c9935123 SK |
8417 | /* gfc_set_array_spec sets sym->attr not CLASS_DATA(sym)->attr. Check |
8418 | for duplicate attribute here. */ | |
8419 | if (CLASS_DATA(sym)->attr.dimension == 1 && as) | |
8420 | { | |
8421 | gfc_error ("Duplicate DIMENSION attribute at %C"); | |
8422 | m = MATCH_ERROR; | |
8423 | goto cleanup; | |
8424 | } | |
8425 | ||
524af0d6 | 8426 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8427 | { |
8428 | m = MATCH_ERROR; | |
8429 | goto cleanup; | |
8430 | } | |
2e23972e JW |
8431 | } |
8432 | else | |
8433 | { | |
be59db2d | 8434 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8435 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8436 | { |
8437 | m = MATCH_ERROR; | |
8438 | goto cleanup; | |
8439 | } | |
6de9cd9a | 8440 | } |
f5acf0f2 | 8441 | |
528622fd | 8442 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8443 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8444 | { |
8445 | m = MATCH_ERROR; | |
8446 | goto cleanup; | |
8447 | } | |
6de9cd9a | 8448 | |
524af0d6 | 8449 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8450 | { |
8451 | m = MATCH_ERROR; | |
8452 | goto cleanup; | |
8453 | } | |
d51347f9 | 8454 | |
83d890b9 AL |
8455 | if (sym->attr.cray_pointee && sym->as != NULL) |
8456 | { | |
8457 | /* Fix the array spec. */ | |
f5acf0f2 | 8458 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8459 | if (m == MATCH_ERROR) |
8460 | goto cleanup; | |
8461 | } | |
6de9cd9a | 8462 | |
524af0d6 | 8463 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8464 | { |
8465 | m = MATCH_ERROR; | |
8466 | goto cleanup; | |
8467 | } | |
8468 | ||
6de9cd9a DN |
8469 | if ((current_attr.external || current_attr.intrinsic) |
8470 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8471 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8472 | { |
8473 | m = MATCH_ERROR; | |
8474 | goto cleanup; | |
8475 | } | |
8476 | ||
3070bab4 JW |
8477 | add_hidden_procptr_result (sym); |
8478 | ||
6de9cd9a DN |
8479 | return MATCH_YES; |
8480 | ||
8481 | cleanup: | |
8482 | gfc_free_array_spec (as); | |
8483 | return m; | |
8484 | } | |
8485 | ||
8486 | ||
8487 | /* Generic attribute declaration subroutine. Used for attributes that | |
8488 | just have a list of names. */ | |
8489 | ||
8490 | static match | |
8491 | attr_decl (void) | |
8492 | { | |
8493 | match m; | |
8494 | ||
8495 | /* Gobble the optional double colon, by simply ignoring the result | |
8496 | of gfc_match(). */ | |
8497 | gfc_match (" ::"); | |
8498 | ||
8499 | for (;;) | |
8500 | { | |
8501 | m = attr_decl1 (); | |
8502 | if (m != MATCH_YES) | |
8503 | break; | |
8504 | ||
8505 | if (gfc_match_eos () == MATCH_YES) | |
8506 | { | |
8507 | m = MATCH_YES; | |
8508 | break; | |
8509 | } | |
8510 | ||
8511 | if (gfc_match_char (',') != MATCH_YES) | |
8512 | { | |
8513 | gfc_error ("Unexpected character in variable list at %C"); | |
8514 | m = MATCH_ERROR; | |
8515 | break; | |
8516 | } | |
8517 | } | |
8518 | ||
8519 | return m; | |
8520 | } | |
8521 | ||
8522 | ||
83d890b9 AL |
8523 | /* This routine matches Cray Pointer declarations of the form: |
8524 | pointer ( <pointer>, <pointee> ) | |
8525 | or | |
d51347f9 TB |
8526 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8527 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8528 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8529 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8530 | the pointee. For the statement |
83d890b9 AL |
8531 | pointer (ipt, ar(10)) |
8532 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8533 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8534 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8535 | |
8536 | static match | |
8537 | cray_pointer_decl (void) | |
8538 | { | |
8539 | match m; | |
be59db2d | 8540 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8541 | gfc_symbol *cptr; /* Pointer symbol. */ |
8542 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8543 | locus var_locus; | |
8544 | bool done = false; | |
8545 | ||
8546 | while (!done) | |
8547 | { | |
8548 | if (gfc_match_char ('(') != MATCH_YES) | |
8549 | { | |
a4d9b221 | 8550 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8551 | return MATCH_ERROR; |
83d890b9 | 8552 | } |
d51347f9 | 8553 | |
83d890b9 AL |
8554 | /* Match pointer. */ |
8555 | var_locus = gfc_current_locus; | |
8556 | gfc_clear_attr (¤t_attr); | |
8557 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8558 | current_ts.type = BT_INTEGER; | |
8559 | current_ts.kind = gfc_index_integer_kind; | |
8560 | ||
d51347f9 | 8561 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8562 | if (m != MATCH_YES) |
8563 | { | |
8564 | gfc_error ("Expected variable name at %C"); | |
8565 | return m; | |
8566 | } | |
d51347f9 | 8567 | |
524af0d6 | 8568 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8569 | return MATCH_ERROR; |
8570 | ||
d51347f9 | 8571 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8572 | |
8573 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8574 | { | |
8575 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8576 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8577 | } |
8578 | else if (cptr->ts.type != BT_INTEGER) | |
8579 | { | |
e25a0da3 | 8580 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8581 | return MATCH_ERROR; |
8582 | } | |
8583 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8584 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8585 | " memory addresses require %d bytes", |
636dff67 | 8586 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8587 | |
8588 | if (gfc_match_char (',') != MATCH_YES) | |
8589 | { | |
8590 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8591 | return MATCH_ERROR; |
83d890b9 AL |
8592 | } |
8593 | ||
d51347f9 | 8594 | /* Match Pointee. */ |
83d890b9 AL |
8595 | var_locus = gfc_current_locus; |
8596 | gfc_clear_attr (¤t_attr); | |
8597 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8598 | current_ts.type = BT_UNKNOWN; | |
8599 | current_ts.kind = 0; | |
8600 | ||
8601 | m = gfc_match_symbol (&cpte, 0); | |
8602 | if (m != MATCH_YES) | |
8603 | { | |
8604 | gfc_error ("Expected variable name at %C"); | |
8605 | return m; | |
8606 | } | |
d51347f9 | 8607 | |
83d890b9 | 8608 | /* Check for an optional array spec. */ |
be59db2d | 8609 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8610 | if (m == MATCH_ERROR) |
8611 | { | |
8612 | gfc_free_array_spec (as); | |
8613 | return m; | |
8614 | } | |
8615 | else if (m == MATCH_NO) | |
8616 | { | |
8617 | gfc_free_array_spec (as); | |
8618 | as = NULL; | |
f5acf0f2 | 8619 | } |
83d890b9 | 8620 | |
524af0d6 | 8621 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8622 | return MATCH_ERROR; |
8623 | ||
8624 | gfc_set_sym_referenced (cpte); | |
8625 | ||
8626 | if (cpte->as == NULL) | |
8627 | { | |
524af0d6 | 8628 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
1fe61adf | 8629 | gfc_internal_error ("Cannot set Cray pointee array spec."); |
83d890b9 AL |
8630 | } |
8631 | else if (as != NULL) | |
8632 | { | |
e25a0da3 | 8633 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8634 | gfc_free_array_spec (as); |
8635 | return MATCH_ERROR; | |
8636 | } | |
f5acf0f2 | 8637 | |
83d890b9 | 8638 | as = NULL; |
f5acf0f2 | 8639 | |
83d890b9 AL |
8640 | if (cpte->as != NULL) |
8641 | { | |
8642 | /* Fix array spec. */ | |
8643 | m = gfc_mod_pointee_as (cpte->as); | |
8644 | if (m == MATCH_ERROR) | |
8645 | return m; | |
f5acf0f2 PT |
8646 | } |
8647 | ||
83d890b9 | 8648 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8649 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8650 | |
8651 | if (gfc_match_char (')') != MATCH_YES) | |
8652 | { | |
8653 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8654 | return MATCH_ERROR; |
83d890b9 AL |
8655 | } |
8656 | m = gfc_match_char (','); | |
8657 | if (m != MATCH_YES) | |
8658 | done = true; /* Stop searching for more declarations. */ | |
8659 | ||
8660 | } | |
f5acf0f2 | 8661 | |
83d890b9 AL |
8662 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8663 | || gfc_match_eos () != MATCH_YES) | |
8664 | { | |
a4d9b221 | 8665 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8666 | return MATCH_ERROR; |
8667 | } | |
8668 | return MATCH_YES; | |
8669 | } | |
8670 | ||
8671 | ||
6de9cd9a DN |
8672 | match |
8673 | gfc_match_external (void) | |
8674 | { | |
8675 | ||
8676 | gfc_clear_attr (¤t_attr); | |
1902704e | 8677 | current_attr.external = 1; |
6de9cd9a DN |
8678 | |
8679 | return attr_decl (); | |
8680 | } | |
8681 | ||
8682 | ||
6de9cd9a DN |
8683 | match |
8684 | gfc_match_intent (void) | |
8685 | { | |
8686 | sym_intent intent; | |
8687 | ||
9abe5e56 DK |
8688 | /* This is not allowed within a BLOCK construct! */ |
8689 | if (gfc_current_state () == COMP_BLOCK) | |
8690 | { | |
8691 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8692 | return MATCH_ERROR; | |
8693 | } | |
8694 | ||
6de9cd9a DN |
8695 | intent = match_intent_spec (); |
8696 | if (intent == INTENT_UNKNOWN) | |
8697 | return MATCH_ERROR; | |
8698 | ||
8699 | gfc_clear_attr (¤t_attr); | |
1902704e | 8700 | current_attr.intent = intent; |
6de9cd9a DN |
8701 | |
8702 | return attr_decl (); | |
8703 | } | |
8704 | ||
8705 | ||
8706 | match | |
8707 | gfc_match_intrinsic (void) | |
8708 | { | |
8709 | ||
8710 | gfc_clear_attr (¤t_attr); | |
1902704e | 8711 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8712 | |
8713 | return attr_decl (); | |
8714 | } | |
8715 | ||
8716 | ||
8717 | match | |
8718 | gfc_match_optional (void) | |
8719 | { | |
9abe5e56 DK |
8720 | /* This is not allowed within a BLOCK construct! */ |
8721 | if (gfc_current_state () == COMP_BLOCK) | |
8722 | { | |
8723 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8724 | return MATCH_ERROR; | |
8725 | } | |
6de9cd9a DN |
8726 | |
8727 | gfc_clear_attr (¤t_attr); | |
1902704e | 8728 | current_attr.optional = 1; |
6de9cd9a DN |
8729 | |
8730 | return attr_decl (); | |
8731 | } | |
8732 | ||
8733 | ||
8734 | match | |
8735 | gfc_match_pointer (void) | |
8736 | { | |
83d890b9 | 8737 | gfc_gobble_whitespace (); |
8fc541d3 | 8738 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8739 | { |
c61819ff | 8740 | if (!flag_cray_pointer) |
83d890b9 | 8741 | { |
a3f9f006 ML |
8742 | gfc_error ("Cray pointer declaration at %C requires " |
8743 | "%<-fcray-pointer%> flag"); | |
83d890b9 AL |
8744 | return MATCH_ERROR; |
8745 | } | |
8746 | return cray_pointer_decl (); | |
8747 | } | |
8748 | else | |
8749 | { | |
8750 | gfc_clear_attr (¤t_attr); | |
1902704e | 8751 | current_attr.pointer = 1; |
f5acf0f2 | 8752 | |
83d890b9 AL |
8753 | return attr_decl (); |
8754 | } | |
6de9cd9a DN |
8755 | } |
8756 | ||
8757 | ||
8758 | match | |
8759 | gfc_match_allocatable (void) | |
8760 | { | |
6de9cd9a | 8761 | gfc_clear_attr (¤t_attr); |
1902704e | 8762 | current_attr.allocatable = 1; |
6de9cd9a DN |
8763 | |
8764 | return attr_decl (); | |
8765 | } | |
8766 | ||
8767 | ||
be59db2d TB |
8768 | match |
8769 | gfc_match_codimension (void) | |
8770 | { | |
8771 | gfc_clear_attr (¤t_attr); | |
8772 | current_attr.codimension = 1; | |
8773 | ||
8774 | return attr_decl (); | |
8775 | } | |
8776 | ||
8777 | ||
fe4e525c TB |
8778 | match |
8779 | gfc_match_contiguous (void) | |
8780 | { | |
524af0d6 | 8781 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8782 | return MATCH_ERROR; |
8783 | ||
8784 | gfc_clear_attr (¤t_attr); | |
8785 | current_attr.contiguous = 1; | |
8786 | ||
8787 | return attr_decl (); | |
8788 | } | |
8789 | ||
8790 | ||
6de9cd9a DN |
8791 | match |
8792 | gfc_match_dimension (void) | |
8793 | { | |
6de9cd9a | 8794 | gfc_clear_attr (¤t_attr); |
1902704e | 8795 | current_attr.dimension = 1; |
6de9cd9a DN |
8796 | |
8797 | return attr_decl (); | |
8798 | } | |
8799 | ||
8800 | ||
8801 | match | |
8802 | gfc_match_target (void) | |
8803 | { | |
6de9cd9a | 8804 | gfc_clear_attr (¤t_attr); |
1902704e | 8805 | current_attr.target = 1; |
6de9cd9a DN |
8806 | |
8807 | return attr_decl (); | |
8808 | } | |
8809 | ||
8810 | ||
8811 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8812 | statement. */ | |
8813 | ||
8814 | static match | |
8815 | access_attr_decl (gfc_statement st) | |
8816 | { | |
8817 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8818 | interface_type type; | |
8819 | gfc_user_op *uop; | |
c3f34952 | 8820 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8821 | gfc_intrinsic_op op; |
6de9cd9a | 8822 | match m; |
b4882698 | 8823 | gfc_access access = (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
6de9cd9a DN |
8824 | |
8825 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8826 | goto done; | |
8827 | ||
8828 | for (;;) | |
8829 | { | |
a1ee985f | 8830 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8831 | if (m == MATCH_NO) |
8832 | goto syntax; | |
8833 | if (m == MATCH_ERROR) | |
b4882698 | 8834 | goto done; |
6de9cd9a DN |
8835 | |
8836 | switch (type) | |
8837 | { | |
8838 | case INTERFACE_NAMELESS: | |
9e1d712c | 8839 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8840 | goto syntax; |
8841 | ||
8842 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8843 | case INTERFACE_DTIO: |
dc42a736 | 8844 | |
6de9cd9a DN |
8845 | if (gfc_get_symbol (name, NULL, &sym)) |
8846 | goto done; | |
8847 | ||
41036686 PT |
8848 | if (type == INTERFACE_DTIO |
8849 | && gfc_current_ns->proc_name | |
8850 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8851 | && sym->attr.flavor == FL_UNKNOWN) | |
8852 | sym->attr.flavor = FL_PROCEDURE; | |
8853 | ||
b4882698 SK |
8854 | if (!gfc_add_access (&sym->attr, access, sym->name, NULL)) |
8855 | goto done; | |
6de9cd9a | 8856 | |
c3f34952 | 8857 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
b4882698 SK |
8858 | && !gfc_add_access (&dt_sym->attr, access, sym->name, NULL)) |
8859 | goto done; | |
c3f34952 | 8860 | |
6de9cd9a DN |
8861 | break; |
8862 | ||
8863 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8864 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8865 | { |
fb03a37e TK |
8866 | gfc_intrinsic_op other_op; |
8867 | ||
b4882698 | 8868 | gfc_current_ns->operator_access[op] = access; |
fb03a37e TK |
8869 | |
8870 | /* Handle the case if there is another op with the same | |
8871 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8872 | other_op = gfc_equivalent_op (op); | |
8873 | ||
8874 | if (other_op != INTRINSIC_NONE) | |
b4882698 | 8875 | gfc_current_ns->operator_access[other_op] = access; |
6de9cd9a DN |
8876 | } |
8877 | else | |
8878 | { | |
8879 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8880 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8881 | goto done; |
8882 | } | |
8883 | ||
8884 | break; | |
8885 | ||
8886 | case INTERFACE_USER_OP: | |
8887 | uop = gfc_get_uop (name); | |
8888 | ||
8889 | if (uop->access == ACCESS_UNKNOWN) | |
8890 | { | |
b4882698 | 8891 | uop->access = access; |
6de9cd9a DN |
8892 | } |
8893 | else | |
8894 | { | |
636dff67 SK |
8895 | gfc_error ("Access specification of the .%s. operator at %C " |
8896 | "has already been specified", sym->name); | |
6de9cd9a DN |
8897 | goto done; |
8898 | } | |
8899 | ||
8900 | break; | |
8901 | } | |
8902 | ||
8903 | if (gfc_match_char (',') == MATCH_NO) | |
8904 | break; | |
8905 | } | |
8906 | ||
8907 | if (gfc_match_eos () != MATCH_YES) | |
8908 | goto syntax; | |
8909 | return MATCH_YES; | |
8910 | ||
8911 | syntax: | |
8912 | gfc_syntax_error (st); | |
8913 | ||
8914 | done: | |
8915 | return MATCH_ERROR; | |
8916 | } | |
8917 | ||
8918 | ||
ee7e677f TB |
8919 | match |
8920 | gfc_match_protected (void) | |
8921 | { | |
8922 | gfc_symbol *sym; | |
8923 | match m; | |
b4882698 SK |
8924 | char c; |
8925 | ||
8926 | /* PROTECTED has already been seen, but must be followed by whitespace | |
8927 | or ::. */ | |
8928 | c = gfc_peek_ascii_char (); | |
8929 | if (!gfc_is_whitespace (c) && c != ':') | |
8930 | return MATCH_NO; | |
ee7e677f | 8931 | |
73641c88 SK |
8932 | if (!gfc_current_ns->proc_name |
8933 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8934 | { |
8935 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8936 | "part of a module"); | |
8937 | return MATCH_ERROR; | |
8938 | ||
8939 | } | |
8940 | ||
b4882698 SK |
8941 | gfc_match (" ::"); |
8942 | ||
524af0d6 | 8943 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8944 | return MATCH_ERROR; |
8945 | ||
b4882698 | 8946 | /* PROTECTED has an entity-list. */ |
ee7e677f TB |
8947 | if (gfc_match_eos () == MATCH_YES) |
8948 | goto syntax; | |
8949 | ||
8950 | for(;;) | |
8951 | { | |
8952 | m = gfc_match_symbol (&sym, 0); | |
8953 | switch (m) | |
8954 | { | |
8955 | case MATCH_YES: | |
524af0d6 | 8956 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8957 | return MATCH_ERROR; |
8958 | goto next_item; | |
8959 | ||
8960 | case MATCH_NO: | |
8961 | break; | |
8962 | ||
8963 | case MATCH_ERROR: | |
8964 | return MATCH_ERROR; | |
8965 | } | |
8966 | ||
8967 | next_item: | |
8968 | if (gfc_match_eos () == MATCH_YES) | |
8969 | break; | |
8970 | if (gfc_match_char (',') != MATCH_YES) | |
8971 | goto syntax; | |
8972 | } | |
8973 | ||
8974 | return MATCH_YES; | |
8975 | ||
8976 | syntax: | |
8977 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8978 | return MATCH_ERROR; | |
8979 | } | |
8980 | ||
8981 | ||
86bf520d | 8982 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8983 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8984 | type declaration or a module. */ |
8985 | ||
8986 | match | |
636dff67 | 8987 | gfc_match_private (gfc_statement *st) |
6de9cd9a | 8988 | { |
b4882698 SK |
8989 | gfc_state_data *prev; |
8990 | char c; | |
6de9cd9a DN |
8991 | |
8992 | if (gfc_match ("private") != MATCH_YES) | |
8993 | return MATCH_NO; | |
8994 | ||
b4882698 SK |
8995 | /* Try matching PRIVATE without an access-list. */ |
8996 | if (gfc_match_eos () == MATCH_YES) | |
6de9cd9a | 8997 | { |
b4882698 SK |
8998 | prev = gfc_state_stack->previous; |
8999 | if (gfc_current_state () != COMP_MODULE | |
9000 | && !(gfc_current_state () == COMP_DERIVED | |
9001 | && prev && prev->state == COMP_MODULE) | |
9002 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
9003 | && prev->previous && prev->previous->state == COMP_MODULE)) | |
6de9cd9a | 9004 | { |
b4882698 SK |
9005 | gfc_error ("PRIVATE statement at %C is only allowed in the " |
9006 | "specification part of a module"); | |
9007 | return MATCH_ERROR; | |
6de9cd9a DN |
9008 | } |
9009 | ||
b4882698 SK |
9010 | *st = ST_PRIVATE; |
9011 | return MATCH_YES; | |
6de9cd9a DN |
9012 | } |
9013 | ||
b4882698 SK |
9014 | /* At this point, PRIVATE must be followed by whitespace or ::. */ |
9015 | c = gfc_peek_ascii_char (); | |
9016 | if (!gfc_is_whitespace (c) && c != ':') | |
9017 | return MATCH_NO; | |
9018 | ||
9019 | prev = gfc_state_stack->previous; | |
9020 | if (gfc_current_state () != COMP_MODULE | |
9021 | && !(gfc_current_state () == COMP_DERIVED | |
9022 | && prev && prev->state == COMP_MODULE) | |
9023 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
9024 | && prev->previous && prev->previous->state == COMP_MODULE)) | |
6de9cd9a | 9025 | { |
b4882698 SK |
9026 | gfc_error ("PRIVATE statement at %C is only allowed in the " |
9027 | "specification part of a module"); | |
9028 | return MATCH_ERROR; | |
6de9cd9a DN |
9029 | } |
9030 | ||
9031 | *st = ST_ATTR_DECL; | |
9032 | return access_attr_decl (ST_PRIVATE); | |
9033 | } | |
9034 | ||
9035 | ||
9036 | match | |
636dff67 | 9037 | gfc_match_public (gfc_statement *st) |
6de9cd9a | 9038 | { |
b4882698 | 9039 | char c; |
6de9cd9a DN |
9040 | |
9041 | if (gfc_match ("public") != MATCH_YES) | |
9042 | return MATCH_NO; | |
9043 | ||
b4882698 SK |
9044 | /* Try matching PUBLIC without an access-list. */ |
9045 | if (gfc_match_eos () == MATCH_YES) | |
9046 | { | |
9047 | if (gfc_current_state () != COMP_MODULE) | |
9048 | { | |
9049 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
9050 | "specification part of a module"); | |
9051 | return MATCH_ERROR; | |
9052 | } | |
9053 | ||
9054 | *st = ST_PUBLIC; | |
9055 | return MATCH_YES; | |
9056 | } | |
9057 | ||
9058 | /* At this point, PUBLIC must be followed by whitespace or ::. */ | |
9059 | c = gfc_peek_ascii_char (); | |
9060 | if (!gfc_is_whitespace (c) && c != ':') | |
9061 | return MATCH_NO; | |
9062 | ||
d51347f9 TB |
9063 | if (gfc_current_state () != COMP_MODULE) |
9064 | { | |
9065 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
9066 | "specification part of a module"); | |
9067 | return MATCH_ERROR; | |
9068 | } | |
9069 | ||
6de9cd9a DN |
9070 | *st = ST_ATTR_DECL; |
9071 | return access_attr_decl (ST_PUBLIC); | |
9072 | } | |
9073 | ||
9074 | ||
9075 | /* Workhorse for gfc_match_parameter. */ | |
9076 | ||
9077 | static match | |
9078 | do_parm (void) | |
9079 | { | |
9080 | gfc_symbol *sym; | |
9081 | gfc_expr *init; | |
9082 | match m; | |
524af0d6 | 9083 | bool t; |
6de9cd9a DN |
9084 | |
9085 | m = gfc_match_symbol (&sym, 0); | |
9086 | if (m == MATCH_NO) | |
9087 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
9088 | ||
9089 | if (m != MATCH_YES) | |
9090 | return m; | |
9091 | ||
9092 | if (gfc_match_char ('=') == MATCH_NO) | |
9093 | { | |
9094 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
9095 | return MATCH_ERROR; | |
9096 | } | |
9097 | ||
9098 | m = gfc_match_init_expr (&init); | |
9099 | if (m == MATCH_NO) | |
9100 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
9101 | if (m != MATCH_YES) | |
9102 | return m; | |
9103 | ||
9104 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 9105 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
9106 | { |
9107 | m = MATCH_ERROR; | |
9108 | goto cleanup; | |
9109 | } | |
9110 | ||
524af0d6 JB |
9111 | if (!gfc_check_assign_symbol (sym, NULL, init) |
9112 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
9113 | { |
9114 | m = MATCH_ERROR; | |
9115 | goto cleanup; | |
9116 | } | |
9117 | ||
1283ab12 TB |
9118 | if (sym->value) |
9119 | { | |
9120 | gfc_error ("Initializing already initialized variable at %C"); | |
9121 | m = MATCH_ERROR; | |
9122 | goto cleanup; | |
9123 | } | |
9124 | ||
7919373d | 9125 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 9126 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
9127 | |
9128 | cleanup: | |
9129 | gfc_free_expr (init); | |
9130 | return m; | |
9131 | } | |
9132 | ||
9133 | ||
9134 | /* Match a parameter statement, with the weird syntax that these have. */ | |
9135 | ||
9136 | match | |
9137 | gfc_match_parameter (void) | |
9138 | { | |
35ea947f | 9139 | const char *term = " )%t"; |
6de9cd9a DN |
9140 | match m; |
9141 | ||
9142 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
9143 | { |
9144 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
9145 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
9146 | return MATCH_NO; | |
9147 | term = " %t"; | |
9148 | } | |
6de9cd9a DN |
9149 | |
9150 | for (;;) | |
9151 | { | |
9152 | m = do_parm (); | |
9153 | if (m != MATCH_YES) | |
9154 | break; | |
9155 | ||
35ea947f | 9156 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
9157 | break; |
9158 | ||
9159 | if (gfc_match_char (',') != MATCH_YES) | |
9160 | { | |
9161 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
9162 | m = MATCH_ERROR; | |
9163 | break; | |
9164 | } | |
9165 | } | |
9166 | ||
9167 | return m; | |
9168 | } | |
9169 | ||
9170 | ||
34d567d1 FR |
9171 | match |
9172 | gfc_match_automatic (void) | |
9173 | { | |
9174 | gfc_symbol *sym; | |
9175 | match m; | |
9176 | bool seen_symbol = false; | |
9177 | ||
9178 | if (!flag_dec_static) | |
9179 | { | |
cf004230 FR |
9180 | gfc_error ("%s at %C is a DEC extension, enable with " |
9181 | "%<-fdec-static%>", | |
9182 | "AUTOMATIC" | |
9183 | ); | |
34d567d1 FR |
9184 | return MATCH_ERROR; |
9185 | } | |
9186 | ||
9187 | gfc_match (" ::"); | |
9188 | ||
9189 | for (;;) | |
9190 | { | |
9191 | m = gfc_match_symbol (&sym, 0); | |
9192 | switch (m) | |
9193 | { | |
9194 | case MATCH_NO: | |
9195 | break; | |
9196 | ||
9197 | case MATCH_ERROR: | |
9198 | return MATCH_ERROR; | |
9199 | ||
9200 | case MATCH_YES: | |
9201 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9202 | return MATCH_ERROR; | |
9203 | seen_symbol = true; | |
9204 | break; | |
9205 | } | |
9206 | ||
9207 | if (gfc_match_eos () == MATCH_YES) | |
9208 | break; | |
9209 | if (gfc_match_char (',') != MATCH_YES) | |
9210 | goto syntax; | |
9211 | } | |
9212 | ||
9213 | if (!seen_symbol) | |
9214 | { | |
9215 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9216 | return MATCH_ERROR; | |
9217 | } | |
9218 | ||
9219 | return MATCH_YES; | |
9220 | ||
9221 | syntax: | |
9222 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9223 | return MATCH_ERROR; | |
9224 | } | |
9225 | ||
9226 | ||
9227 | match | |
9228 | gfc_match_static (void) | |
9229 | { | |
9230 | gfc_symbol *sym; | |
9231 | match m; | |
9232 | bool seen_symbol = false; | |
9233 | ||
9234 | if (!flag_dec_static) | |
9235 | { | |
cf004230 FR |
9236 | gfc_error ("%s at %C is a DEC extension, enable with " |
9237 | "%<-fdec-static%>", | |
9238 | "STATIC"); | |
34d567d1 FR |
9239 | return MATCH_ERROR; |
9240 | } | |
9241 | ||
9242 | gfc_match (" ::"); | |
9243 | ||
9244 | for (;;) | |
9245 | { | |
9246 | m = gfc_match_symbol (&sym, 0); | |
9247 | switch (m) | |
9248 | { | |
9249 | case MATCH_NO: | |
9250 | break; | |
9251 | ||
9252 | case MATCH_ERROR: | |
9253 | return MATCH_ERROR; | |
9254 | ||
9255 | case MATCH_YES: | |
9256 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9257 | &gfc_current_locus)) | |
9258 | return MATCH_ERROR; | |
9259 | seen_symbol = true; | |
9260 | break; | |
9261 | } | |
9262 | ||
9263 | if (gfc_match_eos () == MATCH_YES) | |
9264 | break; | |
9265 | if (gfc_match_char (',') != MATCH_YES) | |
9266 | goto syntax; | |
9267 | } | |
9268 | ||
9269 | if (!seen_symbol) | |
9270 | { | |
9271 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9272 | return MATCH_ERROR; | |
9273 | } | |
9274 | ||
9275 | return MATCH_YES; | |
9276 | ||
9277 | syntax: | |
9278 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9279 | return MATCH_ERROR; | |
9280 | } | |
9281 | ||
9282 | ||
6de9cd9a DN |
9283 | /* Save statements have a special syntax. */ |
9284 | ||
9285 | match | |
9286 | gfc_match_save (void) | |
9287 | { | |
9056bd70 TS |
9288 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9289 | gfc_common_head *c; | |
6de9cd9a DN |
9290 | gfc_symbol *sym; |
9291 | match m; | |
9292 | ||
9293 | if (gfc_match_eos () == MATCH_YES) | |
9294 | { | |
9295 | if (gfc_current_ns->seen_save) | |
9296 | { | |
524af0d6 JB |
9297 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9298 | "follows previous SAVE statement")) | |
09e87839 | 9299 | return MATCH_ERROR; |
6de9cd9a DN |
9300 | } |
9301 | ||
9302 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9303 | return MATCH_YES; | |
9304 | } | |
9305 | ||
9306 | if (gfc_current_ns->save_all) | |
9307 | { | |
524af0d6 JB |
9308 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9309 | "blanket SAVE statement")) | |
09e87839 | 9310 | return MATCH_ERROR; |
6de9cd9a DN |
9311 | } |
9312 | ||
9313 | gfc_match (" ::"); | |
9314 | ||
9315 | for (;;) | |
9316 | { | |
9317 | m = gfc_match_symbol (&sym, 0); | |
9318 | switch (m) | |
9319 | { | |
9320 | case MATCH_YES: | |
70112e2a | 9321 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 9322 | &gfc_current_locus)) |
6de9cd9a DN |
9323 | return MATCH_ERROR; |
9324 | goto next_item; | |
9325 | ||
9326 | case MATCH_NO: | |
9327 | break; | |
9328 | ||
9329 | case MATCH_ERROR: | |
9330 | return MATCH_ERROR; | |
9331 | } | |
9332 | ||
9056bd70 | 9333 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
9334 | if (m == MATCH_ERROR) |
9335 | return MATCH_ERROR; | |
9336 | if (m == MATCH_NO) | |
9337 | goto syntax; | |
9338 | ||
53814b8f | 9339 | c = gfc_get_common (n, 0); |
9056bd70 TS |
9340 | c->saved = 1; |
9341 | ||
6de9cd9a DN |
9342 | gfc_current_ns->seen_save = 1; |
9343 | ||
9344 | next_item: | |
9345 | if (gfc_match_eos () == MATCH_YES) | |
9346 | break; | |
9347 | if (gfc_match_char (',') != MATCH_YES) | |
9348 | goto syntax; | |
9349 | } | |
9350 | ||
9351 | return MATCH_YES; | |
9352 | ||
9353 | syntax: | |
69352933 SK |
9354 | if (gfc_current_ns->seen_save) |
9355 | { | |
9356 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9357 | return MATCH_ERROR; | |
9358 | } | |
9359 | else | |
9360 | return MATCH_NO; | |
6de9cd9a DN |
9361 | } |
9362 | ||
9363 | ||
06469efd PT |
9364 | match |
9365 | gfc_match_value (void) | |
9366 | { | |
9367 | gfc_symbol *sym; | |
9368 | match m; | |
9369 | ||
9abe5e56 DK |
9370 | /* This is not allowed within a BLOCK construct! */ |
9371 | if (gfc_current_state () == COMP_BLOCK) | |
9372 | { | |
9373 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9374 | return MATCH_ERROR; | |
9375 | } | |
9376 | ||
524af0d6 | 9377 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9378 | return MATCH_ERROR; |
9379 | ||
9380 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9381 | { | |
9382 | return MATCH_ERROR; | |
9383 | } | |
9384 | ||
9385 | if (gfc_match_eos () == MATCH_YES) | |
9386 | goto syntax; | |
9387 | ||
9388 | for(;;) | |
9389 | { | |
9390 | m = gfc_match_symbol (&sym, 0); | |
9391 | switch (m) | |
9392 | { | |
9393 | case MATCH_YES: | |
524af0d6 | 9394 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9395 | return MATCH_ERROR; |
9396 | goto next_item; | |
9397 | ||
9398 | case MATCH_NO: | |
9399 | break; | |
9400 | ||
9401 | case MATCH_ERROR: | |
9402 | return MATCH_ERROR; | |
9403 | } | |
9404 | ||
9405 | next_item: | |
9406 | if (gfc_match_eos () == MATCH_YES) | |
9407 | break; | |
9408 | if (gfc_match_char (',') != MATCH_YES) | |
9409 | goto syntax; | |
9410 | } | |
9411 | ||
9412 | return MATCH_YES; | |
9413 | ||
9414 | syntax: | |
9415 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9416 | return MATCH_ERROR; | |
9417 | } | |
9418 | ||
66e4ab31 | 9419 | |
775e6c3a TB |
9420 | match |
9421 | gfc_match_volatile (void) | |
9422 | { | |
9423 | gfc_symbol *sym; | |
ba77f7ba | 9424 | char *name; |
775e6c3a TB |
9425 | match m; |
9426 | ||
524af0d6 | 9427 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9428 | return MATCH_ERROR; |
9429 | ||
9430 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9431 | { | |
9432 | return MATCH_ERROR; | |
9433 | } | |
9434 | ||
9435 | if (gfc_match_eos () == MATCH_YES) | |
9436 | goto syntax; | |
9437 | ||
9438 | for(;;) | |
9439 | { | |
f5acf0f2 | 9440 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9441 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9442 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9443 | switch (m) |
9444 | { | |
9445 | case MATCH_YES: | |
ba77f7ba SK |
9446 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9447 | strcpy (name, sym->name); | |
9448 | if (!check_function_name (name)) | |
9449 | return MATCH_ERROR; | |
be59db2d TB |
9450 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9451 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9452 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9453 | { | |
c4100eae | 9454 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9455 | "%C, which is use-/host-associated", sym->name); |
9456 | return MATCH_ERROR; | |
9457 | } | |
524af0d6 | 9458 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9459 | return MATCH_ERROR; |
9460 | goto next_item; | |
9461 | ||
9462 | case MATCH_NO: | |
9463 | break; | |
9464 | ||
9465 | case MATCH_ERROR: | |
9466 | return MATCH_ERROR; | |
9467 | } | |
9468 | ||
9469 | next_item: | |
9470 | if (gfc_match_eos () == MATCH_YES) | |
9471 | break; | |
9472 | if (gfc_match_char (',') != MATCH_YES) | |
9473 | goto syntax; | |
9474 | } | |
9475 | ||
9476 | return MATCH_YES; | |
9477 | ||
9478 | syntax: | |
9479 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9480 | return MATCH_ERROR; | |
9481 | } | |
9482 | ||
9483 | ||
1eee5628 TB |
9484 | match |
9485 | gfc_match_asynchronous (void) | |
9486 | { | |
9487 | gfc_symbol *sym; | |
ba77f7ba | 9488 | char *name; |
1eee5628 TB |
9489 | match m; |
9490 | ||
524af0d6 | 9491 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9492 | return MATCH_ERROR; |
9493 | ||
9494 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9495 | { | |
9496 | return MATCH_ERROR; | |
9497 | } | |
9498 | ||
9499 | if (gfc_match_eos () == MATCH_YES) | |
9500 | goto syntax; | |
9501 | ||
9502 | for(;;) | |
9503 | { | |
f5acf0f2 | 9504 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9505 | symbols locally. */ |
9506 | m = gfc_match_symbol (&sym, 1); | |
9507 | switch (m) | |
9508 | { | |
9509 | case MATCH_YES: | |
ba77f7ba SK |
9510 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9511 | strcpy (name, sym->name); | |
9512 | if (!check_function_name (name)) | |
9513 | return MATCH_ERROR; | |
524af0d6 | 9514 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9515 | return MATCH_ERROR; |
9516 | goto next_item; | |
9517 | ||
9518 | case MATCH_NO: | |
9519 | break; | |
9520 | ||
9521 | case MATCH_ERROR: | |
9522 | return MATCH_ERROR; | |
9523 | } | |
9524 | ||
9525 | next_item: | |
9526 | if (gfc_match_eos () == MATCH_YES) | |
9527 | break; | |
9528 | if (gfc_match_char (',') != MATCH_YES) | |
9529 | goto syntax; | |
9530 | } | |
9531 | ||
9532 | return MATCH_YES; | |
9533 | ||
9534 | syntax: | |
9535 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9536 | return MATCH_ERROR; | |
9537 | } | |
9538 | ||
9539 | ||
4668d6f9 PT |
9540 | /* Match a module procedure statement in a submodule. */ |
9541 | ||
9542 | match | |
9543 | gfc_match_submod_proc (void) | |
9544 | { | |
9545 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9546 | gfc_symbol *sym, *fsym; | |
9547 | match m; | |
9548 | gfc_formal_arglist *formal, *head, *tail; | |
9549 | ||
9550 | if (gfc_current_state () != COMP_CONTAINS | |
9551 | || !(gfc_state_stack->previous | |
70112e2a PT |
9552 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9553 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9554 | return MATCH_NO; |
9555 | ||
9556 | m = gfc_match (" module% procedure% %n", name); | |
9557 | if (m != MATCH_YES) | |
9558 | return m; | |
9559 | ||
9560 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9561 | "at %C")) | |
9562 | return MATCH_ERROR; | |
9563 | ||
9564 | if (get_proc_name (name, &sym, false)) | |
9565 | return MATCH_ERROR; | |
9566 | ||
9567 | /* Make sure that the result field is appropriately filled, even though | |
9568 | the result symbol will be replaced later on. */ | |
c064374d | 9569 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9570 | { |
c064374d PT |
9571 | if (sym->tlink->result |
9572 | && sym->tlink->result != sym->tlink) | |
9573 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9574 | else |
9575 | sym->result = sym; | |
9576 | } | |
9577 | ||
9578 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9579 | the symbol existed before. */ | |
9580 | sym->declared_at = gfc_current_locus; | |
9581 | ||
9582 | if (!sym->attr.module_procedure) | |
9583 | return MATCH_ERROR; | |
9584 | ||
9585 | /* Signal match_end to expect "end procedure". */ | |
9586 | sym->abr_modproc_decl = 1; | |
9587 | ||
9588 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9589 | sym->attr.if_source = IFSRC_DECL; | |
9590 | ||
9591 | gfc_new_block = sym; | |
9592 | ||
9593 | /* Make a new formal arglist with the symbols in the procedure | |
9594 | namespace. */ | |
9595 | head = tail = NULL; | |
9596 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9597 | { | |
9598 | if (formal == sym->formal) | |
9599 | head = tail = gfc_get_formal_arglist (); | |
9600 | else | |
9601 | { | |
9602 | tail->next = gfc_get_formal_arglist (); | |
9603 | tail = tail->next; | |
9604 | } | |
9605 | ||
9606 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9607 | goto cleanup; | |
9608 | ||
9609 | tail->sym = fsym; | |
9610 | gfc_set_sym_referenced (fsym); | |
9611 | } | |
9612 | ||
9613 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9614 | interface declaration is cleared. This allows us to add the | |
9615 | explicit interface as is done for other type of procedure. */ | |
9616 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9617 | &gfc_current_locus)) | |
9618 | return MATCH_ERROR; | |
9619 | ||
9620 | if (gfc_match_eos () != MATCH_YES) | |
9621 | { | |
9622 | gfc_syntax_error (ST_MODULE_PROC); | |
9623 | return MATCH_ERROR; | |
9624 | } | |
9625 | ||
9626 | return MATCH_YES; | |
9627 | ||
9628 | cleanup: | |
9629 | gfc_free_formal_arglist (head); | |
9630 | return MATCH_ERROR; | |
9631 | } | |
9632 | ||
9633 | ||
6de9cd9a DN |
9634 | /* Match a module procedure statement. Note that we have to modify |
9635 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9636 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9637 | |
9638 | match | |
9639 | gfc_match_modproc (void) | |
9640 | { | |
9641 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9642 | gfc_symbol *sym; | |
9643 | match m; | |
162b5a21 | 9644 | locus old_locus; |
060fca4a | 9645 | gfc_namespace *module_ns; |
2b77e908 | 9646 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9647 | |
9648 | if (gfc_state_stack->state != COMP_INTERFACE | |
9649 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9650 | || current_interface.type == INTERFACE_NAMELESS |
9651 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9652 | { |
636dff67 SK |
9653 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9654 | "interface"); | |
6de9cd9a DN |
9655 | return MATCH_ERROR; |
9656 | } | |
9657 | ||
060fca4a PT |
9658 | module_ns = gfc_current_ns->parent; |
9659 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9660 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9661 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9662 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9663 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9664 | break; |
9665 | ||
9666 | if (module_ns == NULL) | |
9667 | return MATCH_ERROR; | |
9668 | ||
2b77e908 FXC |
9669 | /* Store the current state of the interface. We will need it if we |
9670 | end up with a syntax error and need to recover. */ | |
9671 | old_interface_head = gfc_current_interface_head (); | |
9672 | ||
162b5a21 SK |
9673 | /* Check if the F2008 optional double colon appears. */ |
9674 | gfc_gobble_whitespace (); | |
9675 | old_locus = gfc_current_locus; | |
9676 | if (gfc_match ("::") == MATCH_YES) | |
9677 | { | |
524af0d6 JB |
9678 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9679 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9680 | return MATCH_ERROR; |
9681 | } | |
9682 | else | |
9683 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9684 | |
6de9cd9a DN |
9685 | for (;;) |
9686 | { | |
2b77e908 | 9687 | bool last = false; |
162b5a21 | 9688 | old_locus = gfc_current_locus; |
2b77e908 | 9689 | |
6de9cd9a DN |
9690 | m = gfc_match_name (name); |
9691 | if (m == MATCH_NO) | |
9692 | goto syntax; | |
9693 | if (m != MATCH_YES) | |
9694 | return MATCH_ERROR; | |
9695 | ||
2b77e908 FXC |
9696 | /* Check for syntax error before starting to add symbols to the |
9697 | current namespace. */ | |
9698 | if (gfc_match_eos () == MATCH_YES) | |
9699 | last = true; | |
162b5a21 | 9700 | |
2b77e908 FXC |
9701 | if (!last && gfc_match_char (',') != MATCH_YES) |
9702 | goto syntax; | |
9703 | ||
9704 | /* Now we're sure the syntax is valid, we process this item | |
9705 | further. */ | |
060fca4a | 9706 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9707 | return MATCH_ERROR; |
9708 | ||
43dfd40c SK |
9709 | if (sym->attr.intrinsic) |
9710 | { | |
9711 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9712 | "PROCEDURE", &old_locus); | |
9713 | return MATCH_ERROR; | |
9714 | } | |
9715 | ||
6de9cd9a | 9716 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9717 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9718 | return MATCH_ERROR; |
9719 | ||
524af0d6 | 9720 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9721 | return MATCH_ERROR; |
9722 | ||
71f77fd7 | 9723 | sym->attr.mod_proc = 1; |
43dfd40c | 9724 | sym->declared_at = old_locus; |
71f77fd7 | 9725 | |
2b77e908 | 9726 | if (last) |
6de9cd9a | 9727 | break; |
6de9cd9a DN |
9728 | } |
9729 | ||
9730 | return MATCH_YES; | |
9731 | ||
9732 | syntax: | |
2b77e908 FXC |
9733 | /* Restore the previous state of the interface. */ |
9734 | interface = gfc_current_interface_head (); | |
9735 | gfc_set_current_interface_head (old_interface_head); | |
9736 | ||
9737 | /* Free the new interfaces. */ | |
9738 | while (interface != old_interface_head) | |
9739 | { | |
9740 | gfc_interface *i = interface->next; | |
cede9502 | 9741 | free (interface); |
2b77e908 FXC |
9742 | interface = i; |
9743 | } | |
9744 | ||
9745 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9746 | gfc_syntax_error (ST_MODULE_PROC); |
9747 | return MATCH_ERROR; | |
9748 | } | |
9749 | ||
9750 | ||
7d1f1e61 | 9751 | /* Check a derived type that is being extended. */ |
42e3d759 | 9752 | |
7d1f1e61 PT |
9753 | static gfc_symbol* |
9754 | check_extended_derived_type (char *name) | |
9755 | { | |
9756 | gfc_symbol *extended; | |
9757 | ||
9758 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9759 | { | |
9760 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9761 | return NULL; | |
9762 | } | |
9763 | ||
42e3d759 JW |
9764 | extended = gfc_find_dt_in_generic (extended); |
9765 | ||
9766 | /* F08:C428. */ | |
7d1f1e61 PT |
9767 | if (!extended) |
9768 | { | |
c4100eae | 9769 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9770 | return NULL; |
9771 | } | |
9772 | ||
9773 | if (extended->attr.flavor != FL_DERIVED) | |
9774 | { | |
c4100eae | 9775 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9776 | "derived type", name); |
9777 | return NULL; | |
9778 | } | |
9779 | ||
9780 | if (extended->attr.is_bind_c) | |
9781 | { | |
c4100eae | 9782 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9783 | "is BIND(C)", extended->name); |
9784 | return NULL; | |
9785 | } | |
9786 | ||
9787 | if (extended->attr.sequence) | |
9788 | { | |
c4100eae | 9789 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9790 | "is a SEQUENCE type", extended->name); |
9791 | return NULL; | |
9792 | } | |
9793 | ||
9794 | return extended; | |
9795 | } | |
9796 | ||
9797 | ||
a8b3b0b6 CR |
9798 | /* Match the optional attribute specifiers for a type declaration. |
9799 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9800 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9801 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9802 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9803 | |
9804 | match | |
7d1f1e61 | 9805 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9806 | { |
a8b3b0b6 | 9807 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9808 | if (gfc_match (" , private") == MATCH_YES) |
9809 | { | |
d51347f9 | 9810 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9811 | { |
d51347f9 TB |
9812 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9813 | "specification part of a module"); | |
6de9cd9a DN |
9814 | return MATCH_ERROR; |
9815 | } | |
9816 | ||
524af0d6 | 9817 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9818 | return MATCH_ERROR; |
6de9cd9a | 9819 | } |
a8b3b0b6 | 9820 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9821 | { |
d51347f9 | 9822 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9823 | { |
d51347f9 TB |
9824 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9825 | "specification part of a module"); | |
6de9cd9a DN |
9826 | return MATCH_ERROR; |
9827 | } | |
9828 | ||
524af0d6 | 9829 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9830 | return MATCH_ERROR; |
6de9cd9a | 9831 | } |
52f49934 | 9832 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9833 | { |
9834 | /* If the type is defined to be bind(c) it then needs to make | |
9835 | sure that all fields are interoperable. This will | |
9836 | need to be a semantic check on the finished derived type. | |
9837 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9838 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9839 | return MATCH_ERROR; |
9840 | ||
9841 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9842 | } | |
52f49934 DK |
9843 | else if (gfc_match (" , abstract") == MATCH_YES) |
9844 | { | |
524af0d6 | 9845 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9846 | return MATCH_ERROR; |
9847 | ||
524af0d6 | 9848 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9849 | return MATCH_ERROR; |
9850 | } | |
524af0d6 | 9851 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9852 | { |
524af0d6 | 9853 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9854 | return MATCH_ERROR; |
9855 | } | |
a8b3b0b6 CR |
9856 | else |
9857 | return MATCH_NO; | |
9858 | ||
9859 | /* If we get here, something matched. */ | |
9860 | return MATCH_YES; | |
9861 | } | |
9862 | ||
9863 | ||
f6288c24 FR |
9864 | /* Common function for type declaration blocks similar to derived types, such |
9865 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9866 | does NOT have a generic symbol matching the name given by the user. | |
9867 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9868 | for the creation of an independent symbol. | |
6442a6f4 | 9869 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9870 | type to be created, and the flavor to add to the resulting symbol. */ |
9871 | ||
9872 | static bool | |
9873 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9874 | gfc_symbol **result) | |
9875 | { | |
9876 | gfc_symbol *sym; | |
9877 | locus where; | |
9878 | ||
9879 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9880 | ||
9881 | if (decl) | |
9882 | where = *decl; | |
9883 | else | |
9884 | where = gfc_current_locus; | |
9885 | ||
9886 | if (gfc_get_symbol (name, NULL, &sym)) | |
9887 | return false; | |
9888 | ||
9889 | if (!sym) | |
9890 | { | |
9891 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9892 | return false; | |
9893 | } | |
9894 | ||
9895 | if (sym->components != NULL || sym->attr.zero_comp) | |
9896 | { | |
2f029c08 | 9897 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9898 | sym->name, &sym->declared_at); |
9899 | return false; | |
9900 | } | |
9901 | ||
9902 | sym->declared_at = where; | |
9903 | ||
9904 | if (sym->attr.flavor != fl | |
9905 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9906 | return false; | |
9907 | ||
9908 | if (!sym->hash_value) | |
9909 | /* Set the hash for the compound name for this type. */ | |
9910 | sym->hash_value = gfc_hash_value (sym); | |
9911 | ||
9912 | /* Normally the type is expected to have been completely parsed by the time | |
9913 | a field declaration with this type is seen. For unions, maps, and nested | |
9914 | structure declarations, we need to indicate that it is okay that we | |
9915 | haven't seen any components yet. This will be updated after the structure | |
9916 | is fully parsed. */ | |
9917 | sym->attr.zero_comp = 0; | |
9918 | ||
9919 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9920 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9921 | ||
9922 | if (result) *result = sym; | |
9923 | ||
9924 | return true; | |
9925 | } | |
9926 | ||
9927 | ||
9928 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9929 | behaves identical to STRUCTURE blocks. */ | |
9930 | ||
9931 | match | |
9932 | gfc_match_map (void) | |
9933 | { | |
05b8fcb4 FR |
9934 | /* Counter used to give unique internal names to map structures. */ |
9935 | static unsigned int gfc_map_id = 0; | |
9936 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9937 | gfc_symbol *sym; | |
9938 | locus old_loc; | |
f6288c24 | 9939 | |
05b8fcb4 | 9940 | old_loc = gfc_current_locus; |
f6288c24 | 9941 | |
05b8fcb4 FR |
9942 | if (gfc_match_eos () != MATCH_YES) |
9943 | { | |
9944 | gfc_error ("Junk after MAP statement at %C"); | |
9945 | gfc_current_locus = old_loc; | |
9946 | return MATCH_ERROR; | |
9947 | } | |
f6288c24 | 9948 | |
05b8fcb4 FR |
9949 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9950 | which are invalid Fortran identifiers. */ | |
9951 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9952 | |
05b8fcb4 FR |
9953 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9954 | return MATCH_ERROR; | |
f6288c24 | 9955 | |
05b8fcb4 | 9956 | gfc_new_block = sym; |
f6288c24 | 9957 | |
05b8fcb4 | 9958 | return MATCH_YES; |
f6288c24 FR |
9959 | } |
9960 | ||
9961 | ||
9962 | /* Match the opening of a UNION block. */ | |
9963 | ||
9964 | match | |
9965 | gfc_match_union (void) | |
9966 | { | |
05b8fcb4 FR |
9967 | /* Counter used to give unique internal names to union types. */ |
9968 | static unsigned int gfc_union_id = 0; | |
9969 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9970 | gfc_symbol *sym; | |
9971 | locus old_loc; | |
f6288c24 | 9972 | |
05b8fcb4 | 9973 | old_loc = gfc_current_locus; |
f6288c24 | 9974 | |
05b8fcb4 FR |
9975 | if (gfc_match_eos () != MATCH_YES) |
9976 | { | |
9977 | gfc_error ("Junk after UNION statement at %C"); | |
9978 | gfc_current_locus = old_loc; | |
9979 | return MATCH_ERROR; | |
9980 | } | |
f6288c24 | 9981 | |
05b8fcb4 FR |
9982 | /* Unions are anonymous so we make up unique names for the symbol table |
9983 | which are invalid Fortran identifiers. */ | |
9984 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9985 | |
05b8fcb4 FR |
9986 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9987 | return MATCH_ERROR; | |
f6288c24 | 9988 | |
05b8fcb4 | 9989 | gfc_new_block = sym; |
f6288c24 | 9990 | |
05b8fcb4 | 9991 | return MATCH_YES; |
f6288c24 FR |
9992 | } |
9993 | ||
9994 | ||
9995 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9996 | matching the beginning of a derived type declaration with a few | |
9997 | twists. The resulting type symbol has no access control or other | |
9998 | interesting attributes. */ | |
9999 | ||
10000 | match | |
10001 | gfc_match_structure_decl (void) | |
10002 | { | |
05b8fcb4 FR |
10003 | /* Counter used to give unique internal names to anonymous structures. */ |
10004 | static unsigned int gfc_structure_id = 0; | |
10005 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10006 | gfc_symbol *sym; | |
10007 | match m; | |
10008 | locus where; | |
f6288c24 | 10009 | |
05b8fcb4 FR |
10010 | if (!flag_dec_structure) |
10011 | { | |
cf004230 FR |
10012 | gfc_error ("%s at %C is a DEC extension, enable with " |
10013 | "%<-fdec-structure%>", | |
10014 | "STRUCTURE"); | |
05b8fcb4 FR |
10015 | return MATCH_ERROR; |
10016 | } | |
f6288c24 | 10017 | |
05b8fcb4 | 10018 | name[0] = '\0'; |
f6288c24 | 10019 | |
05b8fcb4 FR |
10020 | m = gfc_match (" /%n/", name); |
10021 | if (m != MATCH_YES) | |
10022 | { | |
10023 | /* Non-nested structure declarations require a structure name. */ | |
10024 | if (!gfc_comp_struct (gfc_current_state ())) | |
10025 | { | |
10026 | gfc_error ("Structure name expected in non-nested structure " | |
10027 | "declaration at %C"); | |
10028 | return MATCH_ERROR; | |
10029 | } | |
10030 | /* This is an anonymous structure; make up a unique name for it | |
10031 | (upper-case letters never make it to symbol names from the source). | |
10032 | The important thing is initializing the type variable | |
10033 | and setting gfc_new_symbol, which is immediately used by | |
10034 | parse_structure () and variable_decl () to add components of | |
10035 | this type. */ | |
10036 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
10037 | } | |
f6288c24 | 10038 | |
05b8fcb4 FR |
10039 | where = gfc_current_locus; |
10040 | /* No field list allowed after non-nested structure declaration. */ | |
10041 | if (!gfc_comp_struct (gfc_current_state ()) | |
10042 | && gfc_match_eos () != MATCH_YES) | |
10043 | { | |
10044 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
10045 | return MATCH_ERROR; | |
10046 | } | |
f6288c24 | 10047 | |
05b8fcb4 FR |
10048 | /* Make sure the name is not the name of an intrinsic type. */ |
10049 | if (gfc_is_intrinsic_typename (name)) | |
10050 | { | |
2f029c08 | 10051 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
10052 | " intrinsic type", name); |
10053 | return MATCH_ERROR; | |
10054 | } | |
f6288c24 | 10055 | |
05b8fcb4 FR |
10056 | /* Store the actual type symbol for the structure with an upper-case first |
10057 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 10058 | |
51f03c6b | 10059 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 10060 | return MATCH_ERROR; |
f6288c24 | 10061 | |
05b8fcb4 FR |
10062 | gfc_new_block = sym; |
10063 | return MATCH_YES; | |
f6288c24 FR |
10064 | } |
10065 | ||
90051c26 FR |
10066 | |
10067 | /* This function does some work to determine which matcher should be used to | |
58b9de9e | 10068 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
90051c26 | 10069 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
58b9de9e | 10070 | * and [parameterized] derived type declarations. */ |
90051c26 FR |
10071 | |
10072 | match | |
10073 | gfc_match_type (gfc_statement *st) | |
10074 | { | |
10075 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10076 | match m; | |
10077 | locus old_loc; | |
10078 | ||
10079 | /* Requires -fdec. */ | |
10080 | if (!flag_dec) | |
10081 | return MATCH_NO; | |
10082 | ||
10083 | m = gfc_match ("type"); | |
10084 | if (m != MATCH_YES) | |
10085 | return m; | |
10086 | /* If we already have an error in the buffer, it is probably from failing to | |
10087 | * match a derived type data declaration. Let it happen. */ | |
10088 | else if (gfc_error_flag_test ()) | |
10089 | return MATCH_NO; | |
10090 | ||
10091 | old_loc = gfc_current_locus; | |
10092 | *st = ST_NONE; | |
10093 | ||
10094 | /* If we see an attribute list before anything else it's definitely a derived | |
10095 | * type declaration. */ | |
10096 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
58b9de9e | 10097 | goto derived; |
90051c26 FR |
10098 | |
10099 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
10100 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
10101 | m = gfc_match_name (name); | |
10102 | if (m != MATCH_YES) | |
10103 | { | |
10104 | /* Let print match if it can, otherwise throw an error from | |
10105 | * gfc_match_derived_decl. */ | |
10106 | gfc_current_locus = old_loc; | |
10107 | if (gfc_match_print () == MATCH_YES) | |
10108 | { | |
10109 | *st = ST_WRITE; | |
10110 | return MATCH_YES; | |
10111 | } | |
58b9de9e | 10112 | goto derived; |
90051c26 FR |
10113 | } |
10114 | ||
58b9de9e FR |
10115 | /* Check for EOS. */ |
10116 | if (gfc_match_eos () == MATCH_YES) | |
90051c26 FR |
10117 | { |
10118 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
10119 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
10120 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
10121 | * symbol which can be printed. */ | |
10122 | gfc_current_locus = old_loc; | |
10123 | m = gfc_match_derived_decl (); | |
10124 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
10125 | { | |
10126 | *st = ST_DERIVED_DECL; | |
10127 | return m; | |
10128 | } | |
90051c26 | 10129 | } |
58b9de9e FR |
10130 | else |
10131 | { | |
10132 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
10133 | like <type name(parameter)>. */ | |
10134 | gfc_gobble_whitespace (); | |
10135 | bool paren = gfc_peek_ascii_char () == '('; | |
10136 | if (paren) | |
10137 | { | |
10138 | if (strcmp ("is", name) == 0) | |
10139 | goto typeis; | |
10140 | else | |
10141 | goto derived; | |
10142 | } | |
10143 | } | |
10144 | ||
10145 | /* Treat TYPE... like PRINT... */ | |
10146 | gfc_current_locus = old_loc; | |
10147 | *st = ST_WRITE; | |
10148 | return gfc_match_print (); | |
90051c26 | 10149 | |
58b9de9e FR |
10150 | derived: |
10151 | gfc_current_locus = old_loc; | |
10152 | *st = ST_DERIVED_DECL; | |
10153 | return gfc_match_derived_decl (); | |
10154 | ||
10155 | typeis: | |
10156 | gfc_current_locus = old_loc; | |
10157 | *st = ST_TYPE_IS; | |
10158 | return gfc_match_type_is (); | |
90051c26 FR |
10159 | } |
10160 | ||
10161 | ||
a8b3b0b6 CR |
10162 | /* Match the beginning of a derived type declaration. If a type name |
10163 | was the result of a function, then it is possible to have a symbol | |
10164 | already to be known as a derived type yet have no components. */ | |
10165 | ||
10166 | match | |
10167 | gfc_match_derived_decl (void) | |
10168 | { | |
10169 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 10170 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 10171 | symbol_attribute attr; |
c3f34952 | 10172 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 10173 | gfc_symbol *extended; |
a8b3b0b6 CR |
10174 | match m; |
10175 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 10176 | bool seen_attr = false; |
c3f34952 | 10177 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
10178 | bool parameterized_type = false; |
10179 | bool seen_colons = false; | |
a8b3b0b6 | 10180 | |
f6288c24 | 10181 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
10182 | return MATCH_NO; |
10183 | ||
7d1f1e61 PT |
10184 | name[0] = '\0'; |
10185 | parent[0] = '\0'; | |
a8b3b0b6 | 10186 | gfc_clear_attr (&attr); |
7d1f1e61 | 10187 | extended = NULL; |
a8b3b0b6 CR |
10188 | |
10189 | do | |
10190 | { | |
7d1f1e61 | 10191 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
10192 | if (is_type_attr_spec == MATCH_ERROR) |
10193 | return MATCH_ERROR; | |
e7303e85 FXC |
10194 | if (is_type_attr_spec == MATCH_YES) |
10195 | seen_attr = true; | |
a8b3b0b6 | 10196 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 10197 | |
63a3341a PT |
10198 | /* Deal with derived type extensions. The extension attribute has |
10199 | been added to 'attr' but now the parent type must be found and | |
10200 | checked. */ | |
7d1f1e61 PT |
10201 | if (parent[0]) |
10202 | extended = check_extended_derived_type (parent); | |
10203 | ||
10204 | if (parent[0] && !extended) | |
10205 | return MATCH_ERROR; | |
10206 | ||
5bab4c96 PT |
10207 | m = gfc_match (" ::"); |
10208 | if (m == MATCH_YES) | |
10209 | { | |
10210 | seen_colons = true; | |
10211 | } | |
10212 | else if (seen_attr) | |
6de9cd9a DN |
10213 | { |
10214 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10215 | return MATCH_ERROR; | |
10216 | } | |
10217 | ||
5bab4c96 | 10218 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
10219 | if (m != MATCH_YES) |
10220 | return m; | |
10221 | ||
5bab4c96 PT |
10222 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10223 | derived type named 'is'. | |
10224 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10225 | and checking if this is a(n intrinsic) typename. his picks up | |
10226 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10227 | if (gfc_peek_ascii_char () == '(') | |
10228 | { | |
10229 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10230 | || (!seen_colons && !strcmp (name, "is"))) | |
10231 | return MATCH_NO; | |
10232 | parameterized_type = true; | |
10233 | } | |
10234 | ||
10235 | m = gfc_match_eos (); | |
10236 | if (m != MATCH_YES && !parameterized_type) | |
10237 | return m; | |
10238 | ||
e9c06563 TB |
10239 | /* Make sure the name is not the name of an intrinsic type. */ |
10240 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 10241 | { |
c4100eae | 10242 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 10243 | "type", name); |
6de9cd9a DN |
10244 | return MATCH_ERROR; |
10245 | } | |
10246 | ||
c3f34952 | 10247 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
10248 | return MATCH_ERROR; |
10249 | ||
c3f34952 | 10250 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 10251 | { |
1072bff8 SK |
10252 | if (gensym->ts.u.derived) |
10253 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10254 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10255 | else | |
10256 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10257 | gensym->name); | |
c3f34952 TB |
10258 | return MATCH_ERROR; |
10259 | } | |
10260 | ||
10261 | if (!gensym->attr.generic | |
524af0d6 | 10262 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10263 | return MATCH_ERROR; |
10264 | ||
10265 | if (!gensym->attr.function | |
524af0d6 | 10266 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10267 | return MATCH_ERROR; |
10268 | ||
e00e1954 SK |
10269 | if (gensym->attr.dummy) |
10270 | { | |
10271 | gfc_error ("Dummy argument %qs at %L cannot be a derived type at %C", | |
10272 | name, &gensym->declared_at); | |
10273 | return MATCH_ERROR; | |
10274 | } | |
10275 | ||
c3f34952 TB |
10276 | sym = gfc_find_dt_in_generic (gensym); |
10277 | ||
10278 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10279 | { | |
c4100eae | 10280 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 10281 | "defined", sym->name); |
6de9cd9a DN |
10282 | return MATCH_ERROR; |
10283 | } | |
10284 | ||
c3f34952 TB |
10285 | if (!sym) |
10286 | { | |
10287 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 10288 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 10289 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
10290 | head = gensym->generic; |
10291 | intr = gfc_get_interface (); | |
10292 | intr->sym = sym; | |
10293 | intr->where = gfc_current_locus; | |
10294 | intr->sym->declared_at = gfc_current_locus; | |
10295 | intr->next = head; | |
10296 | gensym->generic = intr; | |
10297 | gensym->attr.if_source = IFSRC_DECL; | |
10298 | } | |
10299 | ||
6de9cd9a DN |
10300 | /* The symbol may already have the derived attribute without the |
10301 | components. The ways this can happen is via a function | |
10302 | definition, an INTRINSIC statement or a subtype in another | |
10303 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 10304 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 10305 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 10306 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
10307 | return MATCH_ERROR; |
10308 | ||
6de9cd9a | 10309 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 10310 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 10311 | return MATCH_ERROR; |
c3f34952 TB |
10312 | else if (sym->attr.access == ACCESS_UNKNOWN |
10313 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 10314 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 10315 | sym->name, NULL)) |
c3f34952 TB |
10316 | return MATCH_ERROR; |
10317 | ||
10318 | if (sym->attr.access != ACCESS_UNKNOWN | |
10319 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10320 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 10321 | |
a8b3b0b6 CR |
10322 | /* See if the derived type was labeled as bind(c). */ |
10323 | if (attr.is_bind_c != 0) | |
10324 | sym->attr.is_bind_c = attr.is_bind_c; | |
10325 | ||
34523524 DK |
10326 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10327 | if (!sym->f2k_derived) | |
10328 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 10329 | |
5bab4c96 PT |
10330 | if (parameterized_type) |
10331 | { | |
276515e6 PT |
10332 | /* Ignore error or mismatches by going to the end of the statement |
10333 | in order to avoid the component declarations causing problems. */ | |
10334 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10335 | if (m != MATCH_YES) | |
10336 | gfc_error_recovery (); | |
84083a71 JW |
10337 | else |
10338 | sym->attr.pdt_template = 1; | |
5bab4c96 PT |
10339 | m = gfc_match_eos (); |
10340 | if (m != MATCH_YES) | |
f59986b2 PT |
10341 | { |
10342 | gfc_error_recovery (); | |
10343 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10344 | } | |
5bab4c96 PT |
10345 | } |
10346 | ||
7d1f1e61 PT |
10347 | if (extended && !sym->components) |
10348 | { | |
10349 | gfc_component *p; | |
5bab4c96 | 10350 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
10351 | |
10352 | /* Add the extended derived type as the first component. */ | |
10353 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
10354 | extended->refs++; |
10355 | gfc_set_sym_referenced (extended); | |
10356 | ||
10357 | p->ts.type = BT_DERIVED; | |
bc21d315 | 10358 | p->ts.u.derived = extended; |
7d1f1e61 | 10359 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 10360 | |
7c1dab0d JW |
10361 | /* Set extension level. */ |
10362 | if (extended->attr.extension == 255) | |
10363 | { | |
10364 | /* Since the extension field is 8 bit wide, we can only have | |
10365 | up to 255 extension levels. */ | |
c4100eae | 10366 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
10367 | extended->name, &extended->declared_at); |
10368 | return MATCH_ERROR; | |
10369 | } | |
10370 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
10371 | |
10372 | /* Provide the links between the extended type and its extension. */ | |
10373 | if (!extended->f2k_derived) | |
10374 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
10375 | |
10376 | /* Copy the extended type-param-name-list from the extended type, | |
10377 | append those of the extension and add the whole lot to the | |
10378 | extension. */ | |
10379 | if (extended->attr.pdt_template) | |
10380 | { | |
10381 | g = h = NULL; | |
10382 | sym->attr.pdt_template = 1; | |
10383 | for (f = extended->formal; f; f = f->next) | |
10384 | { | |
10385 | if (f == extended->formal) | |
10386 | { | |
10387 | g = gfc_get_formal_arglist (); | |
10388 | h = g; | |
10389 | } | |
10390 | else | |
10391 | { | |
10392 | g->next = gfc_get_formal_arglist (); | |
10393 | g = g->next; | |
10394 | } | |
10395 | g->sym = f->sym; | |
10396 | } | |
10397 | g->next = sym->formal; | |
10398 | sym->formal = h; | |
10399 | } | |
7d1f1e61 PT |
10400 | } |
10401 | ||
7c1dab0d JW |
10402 | if (!sym->hash_value) |
10403 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10404 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10405 | |
52f49934 DK |
10406 | /* Take over the ABSTRACT attribute. */ |
10407 | sym->attr.abstract = attr.abstract; | |
10408 | ||
6de9cd9a DN |
10409 | gfc_new_block = sym; |
10410 | ||
10411 | return MATCH_YES; | |
10412 | } | |
83d890b9 AL |
10413 | |
10414 | ||
f5acf0f2 | 10415 | /* Cray Pointees can be declared as: |
b3aefde2 | 10416 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10417 | |
32e8bb8e | 10418 | match |
83d890b9 AL |
10419 | gfc_mod_pointee_as (gfc_array_spec *as) |
10420 | { | |
10421 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10422 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10423 | as->cp_was_assumed = true; |
83d890b9 AL |
10424 | else if (as->type == AS_ASSUMED_SHAPE) |
10425 | { | |
10426 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10427 | return MATCH_ERROR; | |
10428 | } | |
10429 | return MATCH_YES; | |
10430 | } | |
25d8f0a2 TS |
10431 | |
10432 | ||
f5acf0f2 PT |
10433 | /* Match the enum definition statement, here we are trying to match |
10434 | the first line of enum definition statement. | |
25d8f0a2 TS |
10435 | Returns MATCH_YES if match is found. */ |
10436 | ||
10437 | match | |
10438 | gfc_match_enum (void) | |
10439 | { | |
10440 | match m; | |
f5acf0f2 | 10441 | |
25d8f0a2 TS |
10442 | m = gfc_match_eos (); |
10443 | if (m != MATCH_YES) | |
10444 | return m; | |
10445 | ||
524af0d6 | 10446 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10447 | return MATCH_ERROR; |
10448 | ||
10449 | return MATCH_YES; | |
10450 | } | |
10451 | ||
10452 | ||
31224396 SK |
10453 | /* Returns an initializer whose value is one higher than the value of the |
10454 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10455 | initializers value will be set to zero. The initializer's kind | |
10456 | will be set to gfc_c_int_kind. | |
10457 | ||
10458 | If -fshort-enums is given, the appropriate kind will be selected | |
10459 | later after all enumerators have been parsed. A warning is issued | |
10460 | here if an initializer exceeds gfc_c_int_kind. */ | |
10461 | ||
10462 | static gfc_expr * | |
10463 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10464 | { | |
10465 | gfc_expr *result; | |
b7e75771 | 10466 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10467 | |
10468 | mpz_init (result->value.integer); | |
10469 | ||
10470 | if (last_initializer != NULL) | |
10471 | { | |
10472 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10473 | result->where = last_initializer->where; | |
10474 | ||
10475 | if (gfc_check_integer_range (result->value.integer, | |
10476 | gfc_c_int_kind) != ARITH_OK) | |
10477 | { | |
10478 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10479 | return NULL; | |
10480 | } | |
10481 | } | |
10482 | else | |
10483 | { | |
10484 | /* Control comes here, if it's the very first enumerator and no | |
10485 | initializer has been given. It will be initialized to zero. */ | |
10486 | mpz_set_si (result->value.integer, 0); | |
10487 | } | |
10488 | ||
10489 | return result; | |
10490 | } | |
10491 | ||
10492 | ||
6133c68a TS |
10493 | /* Match a variable name with an optional initializer. When this |
10494 | subroutine is called, a variable is expected to be parsed next. | |
10495 | Depending on what is happening at the moment, updates either the | |
10496 | symbol table or the current interface. */ | |
10497 | ||
10498 | static match | |
10499 | enumerator_decl (void) | |
10500 | { | |
10501 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10502 | gfc_expr *initializer; | |
10503 | gfc_array_spec *as = NULL; | |
10504 | gfc_symbol *sym; | |
10505 | locus var_locus; | |
10506 | match m; | |
524af0d6 | 10507 | bool t; |
6133c68a TS |
10508 | locus old_locus; |
10509 | ||
10510 | initializer = NULL; | |
10511 | old_locus = gfc_current_locus; | |
10512 | ||
10513 | /* When we get here, we've just matched a list of attributes and | |
10514 | maybe a type and a double colon. The next thing we expect to see | |
10515 | is the name of the symbol. */ | |
10516 | m = gfc_match_name (name); | |
10517 | if (m != MATCH_YES) | |
10518 | goto cleanup; | |
10519 | ||
10520 | var_locus = gfc_current_locus; | |
10521 | ||
10522 | /* OK, we've successfully matched the declaration. Now put the | |
10523 | symbol in the current namespace. If we fail to create the symbol, | |
10524 | bail out. */ | |
524af0d6 | 10525 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10526 | { |
10527 | m = MATCH_ERROR; | |
10528 | goto cleanup; | |
10529 | } | |
10530 | ||
10531 | /* The double colon must be present in order to have initializers. | |
10532 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10533 | if (colon_seen) | |
10534 | { | |
10535 | if (gfc_match_char ('=') == MATCH_YES) | |
10536 | { | |
10537 | m = gfc_match_init_expr (&initializer); | |
10538 | if (m == MATCH_NO) | |
10539 | { | |
10540 | gfc_error ("Expected an initialization expression at %C"); | |
10541 | m = MATCH_ERROR; | |
10542 | } | |
10543 | ||
10544 | if (m != MATCH_YES) | |
10545 | goto cleanup; | |
10546 | } | |
10547 | } | |
10548 | ||
10549 | /* If we do not have an initializer, the initialization value of the | |
10550 | previous enumerator (stored in last_initializer) is incremented | |
10551 | by 1 and is used to initialize the current enumerator. */ | |
10552 | if (initializer == NULL) | |
31224396 | 10553 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10554 | |
6133c68a TS |
10555 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10556 | { | |
01e64c3d JJ |
10557 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10558 | &var_locus); | |
d51347f9 | 10559 | m = MATCH_ERROR; |
6133c68a TS |
10560 | goto cleanup; |
10561 | } | |
10562 | ||
10563 | /* Store this current initializer, for the next enumerator variable | |
10564 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10565 | use last_initializer below. */ | |
10566 | last_initializer = initializer; | |
10567 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10568 | ||
10569 | /* Maintain enumerator history. */ | |
10570 | gfc_find_symbol (name, NULL, 0, &sym); | |
10571 | create_enum_history (sym, last_initializer); | |
10572 | ||
524af0d6 | 10573 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10574 | |
10575 | cleanup: | |
10576 | /* Free stuff up and return. */ | |
10577 | gfc_free_expr (initializer); | |
10578 | ||
10579 | return m; | |
10580 | } | |
10581 | ||
10582 | ||
66e4ab31 | 10583 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10584 | |
10585 | match | |
10586 | gfc_match_enumerator_def (void) | |
10587 | { | |
10588 | match m; | |
524af0d6 | 10589 | bool t; |
d51347f9 | 10590 | |
25d8f0a2 | 10591 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10592 | |
25d8f0a2 TS |
10593 | m = gfc_match (" enumerator"); |
10594 | if (m != MATCH_YES) | |
10595 | return m; | |
6133c68a TS |
10596 | |
10597 | m = gfc_match (" :: "); | |
10598 | if (m == MATCH_ERROR) | |
10599 | return m; | |
10600 | ||
10601 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10602 | |
25d8f0a2 TS |
10603 | if (gfc_current_state () != COMP_ENUM) |
10604 | { | |
10605 | gfc_error ("ENUM definition statement expected before %C"); | |
10606 | gfc_free_enum_history (); | |
10607 | return MATCH_ERROR; | |
10608 | } | |
10609 | ||
10610 | (¤t_ts)->type = BT_INTEGER; | |
10611 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10612 | |
6133c68a TS |
10613 | gfc_clear_attr (¤t_attr); |
10614 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10615 | if (!t) |
25d8f0a2 | 10616 | { |
6133c68a | 10617 | m = MATCH_ERROR; |
25d8f0a2 TS |
10618 | goto cleanup; |
10619 | } | |
10620 | ||
25d8f0a2 TS |
10621 | for (;;) |
10622 | { | |
6133c68a | 10623 | m = enumerator_decl (); |
25d8f0a2 | 10624 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10625 | { |
10626 | gfc_free_enum_history (); | |
10627 | goto cleanup; | |
10628 | } | |
25d8f0a2 TS |
10629 | if (m == MATCH_NO) |
10630 | break; | |
10631 | ||
10632 | if (gfc_match_eos () == MATCH_YES) | |
10633 | goto cleanup; | |
10634 | if (gfc_match_char (',') != MATCH_YES) | |
10635 | break; | |
10636 | } | |
10637 | ||
10638 | if (gfc_current_state () == COMP_ENUM) | |
10639 | { | |
10640 | gfc_free_enum_history (); | |
10641 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10642 | m = MATCH_ERROR; | |
10643 | } | |
10644 | ||
10645 | cleanup: | |
10646 | gfc_free_array_spec (current_as); | |
10647 | current_as = NULL; | |
10648 | return m; | |
10649 | ||
10650 | } | |
10651 | ||
f6fad28e | 10652 | |
30b608eb DK |
10653 | /* Match binding attributes. */ |
10654 | ||
10655 | static match | |
713485cc | 10656 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10657 | { |
10658 | bool found_passing = false; | |
713485cc | 10659 | bool seen_ptr = false; |
90661f26 | 10660 | match m = MATCH_YES; |
30b608eb | 10661 | |
eea58adb | 10662 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10663 | this case the defaults are in there. */ |
10664 | ba->access = ACCESS_UNKNOWN; | |
10665 | ba->pass_arg = NULL; | |
10666 | ba->pass_arg_num = 0; | |
10667 | ba->nopass = 0; | |
10668 | ba->non_overridable = 0; | |
b0e5fa94 | 10669 | ba->deferred = 0; |
90661f26 | 10670 | ba->ppc = ppc; |
30b608eb DK |
10671 | |
10672 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10673 | m = gfc_match_char (','); |
10674 | if (m == MATCH_NO) | |
10675 | goto done; | |
30b608eb DK |
10676 | |
10677 | do | |
10678 | { | |
e157f736 DK |
10679 | /* Access specifier. */ |
10680 | ||
10681 | m = gfc_match (" public"); | |
30b608eb DK |
10682 | if (m == MATCH_ERROR) |
10683 | goto error; | |
10684 | if (m == MATCH_YES) | |
10685 | { | |
e157f736 | 10686 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10687 | { |
e157f736 | 10688 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10689 | goto error; |
10690 | } | |
10691 | ||
e157f736 | 10692 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10693 | continue; |
10694 | } | |
10695 | ||
e157f736 | 10696 | m = gfc_match (" private"); |
30b608eb DK |
10697 | if (m == MATCH_ERROR) |
10698 | goto error; | |
10699 | if (m == MATCH_YES) | |
10700 | { | |
e157f736 | 10701 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10702 | { |
e157f736 | 10703 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10704 | goto error; |
10705 | } | |
10706 | ||
e157f736 | 10707 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10708 | continue; |
10709 | } | |
10710 | ||
e157f736 DK |
10711 | /* If inside GENERIC, the following is not allowed. */ |
10712 | if (!generic) | |
30b608eb | 10713 | { |
30b608eb | 10714 | |
e157f736 DK |
10715 | /* NOPASS flag. */ |
10716 | m = gfc_match (" nopass"); | |
10717 | if (m == MATCH_ERROR) | |
10718 | goto error; | |
10719 | if (m == MATCH_YES) | |
30b608eb | 10720 | { |
e157f736 DK |
10721 | if (found_passing) |
10722 | { | |
10723 | gfc_error ("Binding attributes already specify passing," | |
10724 | " illegal NOPASS at %C"); | |
10725 | goto error; | |
10726 | } | |
10727 | ||
10728 | found_passing = true; | |
10729 | ba->nopass = 1; | |
10730 | continue; | |
30b608eb DK |
10731 | } |
10732 | ||
e157f736 DK |
10733 | /* PASS possibly including argument. */ |
10734 | m = gfc_match (" pass"); | |
10735 | if (m == MATCH_ERROR) | |
10736 | goto error; | |
10737 | if (m == MATCH_YES) | |
30b608eb | 10738 | { |
e157f736 DK |
10739 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10740 | ||
10741 | if (found_passing) | |
10742 | { | |
10743 | gfc_error ("Binding attributes already specify passing," | |
10744 | " illegal PASS at %C"); | |
10745 | goto error; | |
10746 | } | |
10747 | ||
10748 | m = gfc_match (" ( %n )", arg); | |
10749 | if (m == MATCH_ERROR) | |
10750 | goto error; | |
10751 | if (m == MATCH_YES) | |
51f03c6b | 10752 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10753 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10754 | ||
10755 | found_passing = true; | |
10756 | ba->nopass = 0; | |
10757 | continue; | |
30b608eb DK |
10758 | } |
10759 | ||
713485cc JW |
10760 | if (ppc) |
10761 | { | |
10762 | /* POINTER flag. */ | |
10763 | m = gfc_match (" pointer"); | |
10764 | if (m == MATCH_ERROR) | |
10765 | goto error; | |
10766 | if (m == MATCH_YES) | |
10767 | { | |
10768 | if (seen_ptr) | |
10769 | { | |
10770 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10771 | goto error; | |
10772 | } | |
10773 | ||
10774 | seen_ptr = true; | |
713485cc JW |
10775 | continue; |
10776 | } | |
10777 | } | |
10778 | else | |
10779 | { | |
10780 | /* NON_OVERRIDABLE flag. */ | |
10781 | m = gfc_match (" non_overridable"); | |
10782 | if (m == MATCH_ERROR) | |
10783 | goto error; | |
10784 | if (m == MATCH_YES) | |
10785 | { | |
10786 | if (ba->non_overridable) | |
10787 | { | |
10788 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10789 | goto error; | |
10790 | } | |
10791 | ||
10792 | ba->non_overridable = 1; | |
10793 | continue; | |
10794 | } | |
10795 | ||
10796 | /* DEFERRED flag. */ | |
10797 | m = gfc_match (" deferred"); | |
10798 | if (m == MATCH_ERROR) | |
10799 | goto error; | |
10800 | if (m == MATCH_YES) | |
10801 | { | |
10802 | if (ba->deferred) | |
10803 | { | |
10804 | gfc_error ("Duplicate DEFERRED at %C"); | |
10805 | goto error; | |
10806 | } | |
10807 | ||
10808 | ba->deferred = 1; | |
10809 | continue; | |
10810 | } | |
10811 | } | |
10812 | ||
30b608eb DK |
10813 | } |
10814 | ||
10815 | /* Nothing matching found. */ | |
e157f736 DK |
10816 | if (generic) |
10817 | gfc_error ("Expected access-specifier at %C"); | |
10818 | else | |
10819 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10820 | goto error; |
10821 | } | |
10822 | while (gfc_match_char (',') == MATCH_YES); | |
10823 | ||
b0e5fa94 DK |
10824 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10825 | if (ba->non_overridable && ba->deferred) | |
10826 | { | |
1fe61adf | 10827 | gfc_error ("NON_OVERRIDABLE and DEFERRED cannot both appear at %C"); |
b0e5fa94 DK |
10828 | goto error; |
10829 | } | |
10830 | ||
90661f26 JW |
10831 | m = MATCH_YES; |
10832 | ||
10833 | done: | |
e157f736 | 10834 | if (ba->access == ACCESS_UNKNOWN) |
d4beaf2a JW |
10835 | ba->access = ppc ? gfc_current_block()->component_access |
10836 | : gfc_typebound_default_access; | |
e157f736 | 10837 | |
713485cc JW |
10838 | if (ppc && !seen_ptr) |
10839 | { | |
10840 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10841 | " at %C"); | |
10842 | goto error; | |
10843 | } | |
10844 | ||
90661f26 | 10845 | return m; |
30b608eb DK |
10846 | |
10847 | error: | |
30b608eb DK |
10848 | return MATCH_ERROR; |
10849 | } | |
10850 | ||
10851 | ||
10852 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10853 | ||
10854 | static match | |
10855 | match_procedure_in_type (void) | |
10856 | { | |
10857 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10858 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10859 | char* target = NULL, *ifc = NULL; |
3e15518b | 10860 | gfc_typebound_proc tb; |
30b608eb DK |
10861 | bool seen_colons; |
10862 | bool seen_attrs; | |
10863 | match m; | |
10864 | gfc_symtree* stree; | |
10865 | gfc_namespace* ns; | |
10866 | gfc_symbol* block; | |
1be17993 | 10867 | int num; |
30b608eb DK |
10868 | |
10869 | /* Check current state. */ | |
10870 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10871 | block = gfc_state_stack->previous->sym; | |
10872 | gcc_assert (block); | |
10873 | ||
b0e5fa94 | 10874 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10875 | if (gfc_match (" (") == MATCH_YES) |
10876 | { | |
b0e5fa94 DK |
10877 | m = gfc_match_name (target_buf); |
10878 | if (m == MATCH_ERROR) | |
10879 | return m; | |
10880 | if (m != MATCH_YES) | |
10881 | { | |
a4d9b221 | 10882 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10883 | return MATCH_ERROR; |
10884 | } | |
10885 | ||
10886 | if (gfc_match (" )") != MATCH_YES) | |
10887 | { | |
a4d9b221 | 10888 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10889 | return MATCH_ERROR; |
10890 | } | |
10891 | ||
1be17993 | 10892 | ifc = target_buf; |
30b608eb DK |
10893 | } |
10894 | ||
10895 | /* Construct the data structure. */ | |
ff5b6492 | 10896 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10897 | tb.where = gfc_current_locus; |
30b608eb DK |
10898 | |
10899 | /* Match binding attributes. */ | |
3e15518b | 10900 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10901 | if (m == MATCH_ERROR) |
10902 | return m; | |
10903 | seen_attrs = (m == MATCH_YES); | |
10904 | ||
1be17993 | 10905 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10906 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10907 | { |
10908 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10909 | return MATCH_ERROR; | |
10910 | } | |
3e15518b | 10911 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10912 | { |
10913 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10914 | return MATCH_ERROR; | |
10915 | } | |
10916 | ||
30b608eb DK |
10917 | /* Match the colons. */ |
10918 | m = gfc_match (" ::"); | |
10919 | if (m == MATCH_ERROR) | |
10920 | return m; | |
10921 | seen_colons = (m == MATCH_YES); | |
10922 | if (seen_attrs && !seen_colons) | |
10923 | { | |
a4d9b221 | 10924 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10925 | return MATCH_ERROR; |
10926 | } | |
10927 | ||
f5acf0f2 | 10928 | /* Match the binding names. */ |
1be17993 | 10929 | for(num=1;;num++) |
30b608eb | 10930 | { |
1be17993 JW |
10931 | m = gfc_match_name (name); |
10932 | if (m == MATCH_ERROR) | |
10933 | return m; | |
10934 | if (m == MATCH_NO) | |
b0e5fa94 | 10935 | { |
1be17993 | 10936 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10937 | return MATCH_ERROR; |
10938 | } | |
10939 | ||
524af0d6 | 10940 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10941 | return MATCH_ERROR; |
30b608eb | 10942 | |
1be17993 JW |
10943 | /* Try to match the '=> target', if it's there. */ |
10944 | target = ifc; | |
10945 | m = gfc_match (" =>"); | |
30b608eb DK |
10946 | if (m == MATCH_ERROR) |
10947 | return m; | |
1be17993 | 10948 | if (m == MATCH_YES) |
30b608eb | 10949 | { |
3e15518b | 10950 | if (tb.deferred) |
1be17993 | 10951 | { |
a4d9b221 | 10952 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10953 | return MATCH_ERROR; |
10954 | } | |
10955 | ||
10956 | if (!seen_colons) | |
10957 | { | |
a4d9b221 | 10958 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10959 | " at %C"); |
10960 | return MATCH_ERROR; | |
10961 | } | |
10962 | ||
10963 | m = gfc_match_name (target_buf); | |
10964 | if (m == MATCH_ERROR) | |
10965 | return m; | |
10966 | if (m == MATCH_NO) | |
10967 | { | |
a4d9b221 | 10968 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10969 | return MATCH_ERROR; |
10970 | } | |
10971 | target = target_buf; | |
30b608eb | 10972 | } |
30b608eb | 10973 | |
1be17993 JW |
10974 | /* If no target was found, it has the same name as the binding. */ |
10975 | if (!target) | |
10976 | target = name; | |
30b608eb | 10977 | |
1be17993 JW |
10978 | /* Get the namespace to insert the symbols into. */ |
10979 | ns = block->f2k_derived; | |
10980 | gcc_assert (ns); | |
30b608eb | 10981 | |
1be17993 | 10982 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10983 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10984 | { |
c4100eae | 10985 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10986 | "is not ABSTRACT", block->name); |
10987 | return MATCH_ERROR; | |
10988 | } | |
30b608eb | 10989 | |
1be17993 | 10990 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10991 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10992 | be already there but then typebound is still NULL. */ |
10993 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10994 | if (stree && stree->n.tb) |
1be17993 | 10995 | { |
c4100eae MLI |
10996 | gfc_error ("There is already a procedure with binding name %qs for " |
10997 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10998 | return MATCH_ERROR; |
10999 | } | |
b0e5fa94 | 11000 | |
1be17993 | 11001 | /* Insert it and set attributes. */ |
30b608eb | 11002 | |
9f23af48 MM |
11003 | if (!stree) |
11004 | { | |
11005 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
11006 | gcc_assert (stree); | |
11007 | } | |
3e15518b | 11008 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 11009 | |
3e15518b JW |
11010 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
11011 | false)) | |
1be17993 | 11012 | return MATCH_ERROR; |
3e15518b | 11013 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
11014 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
11015 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 11016 | |
1be17993 JW |
11017 | if (gfc_match_eos () == MATCH_YES) |
11018 | return MATCH_YES; | |
11019 | if (gfc_match_char (',') != MATCH_YES) | |
11020 | goto syntax; | |
e34ccb4c | 11021 | } |
30b608eb | 11022 | |
1be17993 JW |
11023 | syntax: |
11024 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
11025 | return MATCH_ERROR; | |
30b608eb DK |
11026 | } |
11027 | ||
11028 | ||
e157f736 DK |
11029 | /* Match a GENERIC procedure binding inside a derived type. */ |
11030 | ||
11031 | match | |
11032 | gfc_match_generic (void) | |
11033 | { | |
11034 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 11035 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
11036 | gfc_symbol* block; |
11037 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
11038 | gfc_typebound_proc* tb; | |
e157f736 | 11039 | gfc_namespace* ns; |
94747289 DK |
11040 | interface_type op_type; |
11041 | gfc_intrinsic_op op; | |
e157f736 DK |
11042 | match m; |
11043 | ||
11044 | /* Check current state. */ | |
11045 | if (gfc_current_state () == COMP_DERIVED) | |
11046 | { | |
11047 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
11048 | return MATCH_ERROR; | |
11049 | } | |
11050 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
11051 | return MATCH_NO; | |
11052 | block = gfc_state_stack->previous->sym; | |
11053 | ns = block->f2k_derived; | |
11054 | gcc_assert (block && ns); | |
11055 | ||
ff5b6492 MM |
11056 | memset (&tbattr, 0, sizeof (tbattr)); |
11057 | tbattr.where = gfc_current_locus; | |
11058 | ||
e157f736 | 11059 | /* See if we get an access-specifier. */ |
713485cc | 11060 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
11061 | if (m == MATCH_ERROR) |
11062 | goto error; | |
11063 | ||
11064 | /* Now the colons, those are required. */ | |
11065 | if (gfc_match (" ::") != MATCH_YES) | |
11066 | { | |
a4d9b221 | 11067 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
11068 | goto error; |
11069 | } | |
11070 | ||
94747289 DK |
11071 | /* Match the binding name; depending on type (operator / generic) format |
11072 | it for future error messages into bind_name. */ | |
f5acf0f2 | 11073 | |
94747289 | 11074 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
11075 | if (m == MATCH_ERROR) |
11076 | return MATCH_ERROR; | |
11077 | if (m == MATCH_NO) | |
11078 | { | |
94747289 | 11079 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
11080 | goto error; |
11081 | } | |
11082 | ||
94747289 | 11083 | switch (op_type) |
e157f736 | 11084 | { |
94747289 | 11085 | case INTERFACE_GENERIC: |
e73d3ca6 | 11086 | case INTERFACE_DTIO: |
94747289 DK |
11087 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
11088 | break; | |
f5acf0f2 | 11089 | |
94747289 DK |
11090 | case INTERFACE_USER_OP: |
11091 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
11092 | break; | |
f5acf0f2 | 11093 | |
94747289 DK |
11094 | case INTERFACE_INTRINSIC_OP: |
11095 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
11096 | gfc_op2string (op)); | |
11097 | break; | |
11098 | ||
377e37c1 SK |
11099 | case INTERFACE_NAMELESS: |
11100 | gfc_error ("Malformed GENERIC statement at %C"); | |
11101 | goto error; | |
11102 | break; | |
11103 | ||
94747289 DK |
11104 | default: |
11105 | gcc_unreachable (); | |
11106 | } | |
e34ccb4c | 11107 | |
94747289 DK |
11108 | /* Match the required =>. */ |
11109 | if (gfc_match (" =>") != MATCH_YES) | |
11110 | { | |
a4d9b221 | 11111 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
11112 | goto error; |
11113 | } | |
f5acf0f2 | 11114 | |
94747289 DK |
11115 | /* Try to find existing GENERIC binding with this name / for this operator; |
11116 | if there is something, check that it is another GENERIC and then extend | |
11117 | it rather than building a new node. Otherwise, create it and put it | |
11118 | at the right position. */ | |
11119 | ||
11120 | switch (op_type) | |
11121 | { | |
e73d3ca6 | 11122 | case INTERFACE_DTIO: |
94747289 DK |
11123 | case INTERFACE_USER_OP: |
11124 | case INTERFACE_GENERIC: | |
11125 | { | |
11126 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
11127 | gfc_symtree* st; | |
11128 | ||
11129 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 11130 | tb = st ? st->n.tb : NULL; |
94747289 DK |
11131 | break; |
11132 | } | |
11133 | ||
11134 | case INTERFACE_INTRINSIC_OP: | |
11135 | tb = ns->tb_op[op]; | |
11136 | break; | |
11137 | ||
11138 | default: | |
11139 | gcc_unreachable (); | |
11140 | } | |
11141 | ||
11142 | if (tb) | |
11143 | { | |
e34ccb4c | 11144 | if (!tb->is_generic) |
e157f736 | 11145 | { |
94747289 | 11146 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 11147 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 11148 | " %qs for the derived type %qs at %C", |
94747289 | 11149 | bind_name, block->name); |
e157f736 DK |
11150 | goto error; |
11151 | } | |
11152 | ||
e157f736 DK |
11153 | if (tb->access != tbattr.access) |
11154 | { | |
11155 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 11156 | " defined binding %qs", bind_name); |
e157f736 DK |
11157 | goto error; |
11158 | } | |
11159 | } | |
11160 | else | |
11161 | { | |
3e15518b | 11162 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
11163 | tb->where = gfc_current_locus; |
11164 | tb->access = tbattr.access; | |
11165 | tb->is_generic = 1; | |
11166 | tb->u.generic = NULL; | |
94747289 DK |
11167 | |
11168 | switch (op_type) | |
11169 | { | |
e73d3ca6 | 11170 | case INTERFACE_DTIO: |
94747289 DK |
11171 | case INTERFACE_GENERIC: |
11172 | case INTERFACE_USER_OP: | |
11173 | { | |
11174 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
11175 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
11176 | &ns->tb_sym_root, name); | |
94747289 DK |
11177 | gcc_assert (st); |
11178 | st->n.tb = tb; | |
11179 | ||
11180 | break; | |
11181 | } | |
f5acf0f2 | 11182 | |
94747289 DK |
11183 | case INTERFACE_INTRINSIC_OP: |
11184 | ns->tb_op[op] = tb; | |
11185 | break; | |
11186 | ||
11187 | default: | |
11188 | gcc_unreachable (); | |
11189 | } | |
e157f736 DK |
11190 | } |
11191 | ||
11192 | /* Now, match all following names as specific targets. */ | |
11193 | do | |
11194 | { | |
11195 | gfc_symtree* target_st; | |
11196 | gfc_tbp_generic* target; | |
11197 | ||
11198 | m = gfc_match_name (name); | |
11199 | if (m == MATCH_ERROR) | |
11200 | goto error; | |
11201 | if (m == MATCH_NO) | |
11202 | { | |
11203 | gfc_error ("Expected specific binding name at %C"); | |
11204 | goto error; | |
11205 | } | |
11206 | ||
e34ccb4c | 11207 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
11208 | |
11209 | /* See if this is a duplicate specification. */ | |
11210 | for (target = tb->u.generic; target; target = target->next) | |
11211 | if (target_st == target->specific_st) | |
11212 | { | |
c4100eae MLI |
11213 | gfc_error ("%qs already defined as specific binding for the" |
11214 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
11215 | goto error; |
11216 | } | |
11217 | ||
e157f736 DK |
11218 | target = gfc_get_tbp_generic (); |
11219 | target->specific_st = target_st; | |
11220 | target->specific = NULL; | |
11221 | target->next = tb->u.generic; | |
218e1228 TB |
11222 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11223 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
11224 | tb->u.generic = target; |
11225 | } | |
11226 | while (gfc_match (" ,") == MATCH_YES); | |
11227 | ||
11228 | /* Here should be the end. */ | |
11229 | if (gfc_match_eos () != MATCH_YES) | |
11230 | { | |
11231 | gfc_error ("Junk after GENERIC binding at %C"); | |
11232 | goto error; | |
11233 | } | |
11234 | ||
11235 | return MATCH_YES; | |
11236 | ||
11237 | error: | |
11238 | return MATCH_ERROR; | |
11239 | } | |
11240 | ||
11241 | ||
34523524 DK |
11242 | /* Match a FINAL declaration inside a derived type. */ |
11243 | ||
11244 | match | |
11245 | gfc_match_final_decl (void) | |
11246 | { | |
11247 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11248 | gfc_symbol* sym; | |
11249 | match m; | |
11250 | gfc_namespace* module_ns; | |
11251 | bool first, last; | |
30b608eb | 11252 | gfc_symbol* block; |
34523524 | 11253 | |
33344e0f JW |
11254 | if (gfc_current_form == FORM_FREE) |
11255 | { | |
11256 | char c = gfc_peek_ascii_char (); | |
11257 | if (!gfc_is_whitespace (c) && c != ':') | |
11258 | return MATCH_NO; | |
11259 | } | |
f5acf0f2 | 11260 | |
30b608eb | 11261 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 11262 | { |
33344e0f JW |
11263 | if (gfc_current_form == FORM_FIXED) |
11264 | return MATCH_NO; | |
11265 | ||
34523524 | 11266 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 11267 | "CONTAINS section"); |
34523524 DK |
11268 | return MATCH_ERROR; |
11269 | } | |
11270 | ||
30b608eb DK |
11271 | block = gfc_state_stack->previous->sym; |
11272 | gcc_assert (block); | |
34523524 | 11273 | |
30b608eb DK |
11274 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11275 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
11276 | { |
11277 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11278 | " specification part of a MODULE"); | |
11279 | return MATCH_ERROR; | |
11280 | } | |
11281 | ||
11282 | module_ns = gfc_current_ns; | |
11283 | gcc_assert (module_ns); | |
11284 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11285 | ||
11286 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11287 | if (gfc_match (" ::") == MATCH_ERROR) | |
11288 | return MATCH_ERROR; | |
11289 | ||
11290 | /* Match the sequence of procedure names. */ | |
11291 | first = true; | |
11292 | last = false; | |
11293 | do | |
11294 | { | |
11295 | gfc_finalizer* f; | |
11296 | ||
11297 | if (first && gfc_match_eos () == MATCH_YES) | |
11298 | { | |
11299 | gfc_error ("Empty FINAL at %C"); | |
11300 | return MATCH_ERROR; | |
11301 | } | |
11302 | ||
11303 | m = gfc_match_name (name); | |
11304 | if (m == MATCH_NO) | |
11305 | { | |
11306 | gfc_error ("Expected module procedure name at %C"); | |
11307 | return MATCH_ERROR; | |
11308 | } | |
11309 | else if (m != MATCH_YES) | |
11310 | return MATCH_ERROR; | |
11311 | ||
11312 | if (gfc_match_eos () == MATCH_YES) | |
11313 | last = true; | |
11314 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11315 | { | |
a4d9b221 | 11316 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
11317 | return MATCH_ERROR; |
11318 | } | |
11319 | ||
11320 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11321 | { | |
c4100eae | 11322 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
11323 | return MATCH_ERROR; |
11324 | } | |
11325 | ||
11326 | /* Mark the symbol as module procedure. */ | |
11327 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 11328 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
11329 | return MATCH_ERROR; |
11330 | ||
11331 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 11332 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 11333 | if (f->proc_sym == sym) |
34523524 | 11334 | { |
546c8974 | 11335 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
11336 | name); |
11337 | return MATCH_ERROR; | |
11338 | } | |
11339 | ||
11340 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 11341 | gcc_assert (block->f2k_derived); |
2050626a | 11342 | sym->refs++; |
ece3f663 | 11343 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
11344 | f->proc_sym = sym; |
11345 | f->proc_tree = NULL; | |
34523524 | 11346 | f->where = gfc_current_locus; |
30b608eb DK |
11347 | f->next = block->f2k_derived->finalizers; |
11348 | block->f2k_derived->finalizers = f; | |
34523524 DK |
11349 | |
11350 | first = false; | |
11351 | } | |
11352 | while (!last); | |
11353 | ||
11354 | return MATCH_YES; | |
11355 | } | |
08a6b8e0 TB |
11356 | |
11357 | ||
11358 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
11359 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11360 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11361 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11362 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11363 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11364 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11365 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
11366 | }; |
11367 | ||
11368 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11369 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11370 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11371 | ||
11372 | TODO: We should support all GCC attributes using the same syntax for | |
11373 | the attribute list, i.e. the list in C | |
11374 | __attributes(( attribute-list )) | |
11375 | matches then | |
11376 | !GCC$ ATTRIBUTES attribute-list :: | |
11377 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11378 | saved into a TREE. | |
11379 | ||
11380 | As there is absolutely no risk of confusion, we should never return | |
11381 | MATCH_NO. */ | |
11382 | match | |
11383 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 11384 | { |
08a6b8e0 TB |
11385 | symbol_attribute attr; |
11386 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11387 | unsigned id; | |
11388 | gfc_symbol *sym; | |
11389 | match m; | |
11390 | ||
11391 | gfc_clear_attr (&attr); | |
11392 | for(;;) | |
11393 | { | |
11394 | char ch; | |
11395 | ||
11396 | if (gfc_match_name (name) != MATCH_YES) | |
11397 | return MATCH_ERROR; | |
11398 | ||
11399 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11400 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11401 | break; | |
11402 | ||
11403 | if (id == EXT_ATTR_LAST) | |
11404 | { | |
11405 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11406 | return MATCH_ERROR; | |
11407 | } | |
11408 | ||
524af0d6 | 11409 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11410 | return MATCH_ERROR; |
11411 | ||
11412 | gfc_gobble_whitespace (); | |
11413 | ch = gfc_next_ascii_char (); | |
11414 | if (ch == ':') | |
11415 | { | |
11416 | /* This is the successful exit condition for the loop. */ | |
11417 | if (gfc_next_ascii_char () == ':') | |
11418 | break; | |
11419 | } | |
11420 | ||
11421 | if (ch == ',') | |
11422 | continue; | |
11423 | ||
11424 | goto syntax; | |
11425 | } | |
11426 | ||
11427 | if (gfc_match_eos () == MATCH_YES) | |
11428 | goto syntax; | |
11429 | ||
11430 | for(;;) | |
11431 | { | |
11432 | m = gfc_match_name (name); | |
11433 | if (m != MATCH_YES) | |
11434 | return m; | |
11435 | ||
11436 | if (find_special (name, &sym, true)) | |
11437 | return MATCH_ERROR; | |
f5acf0f2 | 11438 | |
08a6b8e0 TB |
11439 | sym->attr.ext_attr |= attr.ext_attr; |
11440 | ||
11441 | if (gfc_match_eos () == MATCH_YES) | |
11442 | break; | |
11443 | ||
11444 | if (gfc_match_char (',') != MATCH_YES) | |
11445 | goto syntax; | |
11446 | } | |
11447 | ||
11448 | return MATCH_YES; | |
11449 | ||
11450 | syntax: | |
11451 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11452 | return MATCH_ERROR; | |
11453 | } | |
170a8bd6 EB |
11454 | |
11455 | ||
11456 | /* Match a !GCC$ UNROLL statement of the form: | |
11457 | !GCC$ UNROLL n | |
11458 | ||
11459 | The parameter n is the number of times we are supposed to unroll. | |
11460 | ||
11461 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11462 | match | |
11463 | gfc_match_gcc_unroll (void) | |
11464 | { | |
11465 | int value; | |
11466 | ||
11467 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11468 | { | |
11469 | if (value < 0 || value > USHRT_MAX) | |
11470 | { | |
11471 | gfc_error ("%<GCC unroll%> directive requires a" | |
11472 | " non-negative integral constant" | |
11473 | " less than or equal to %u at %C", | |
11474 | USHRT_MAX | |
11475 | ); | |
11476 | return MATCH_ERROR; | |
11477 | } | |
11478 | if (gfc_match_eos () == MATCH_YES) | |
11479 | { | |
11480 | directive_unroll = value == 0 ? 1 : value; | |
11481 | return MATCH_YES; | |
11482 | } | |
11483 | } | |
11484 | ||
11485 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11486 | return MATCH_ERROR; | |
11487 | } | |
facf0354 | 11488 | |
e8cecccc | 11489 | /* Match a !GCC$ builtin (b) attributes simd flags if('target') form: |
facf0354 ML |
11490 | |
11491 | The parameter b is name of a middle-end built-in. | |
e8cecccc ML |
11492 | FLAGS is optional and must be one of: |
11493 | - (inbranch) | |
11494 | - (notinbranch) | |
11495 | ||
11496 | IF('target') is optional and TARGET is a name of a multilib ABI. | |
facf0354 ML |
11497 | |
11498 | When we come here, we have already matched the !GCC$ builtin string. */ | |
e8cecccc | 11499 | |
facf0354 ML |
11500 | match |
11501 | gfc_match_gcc_builtin (void) | |
11502 | { | |
11503 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
e8cecccc | 11504 | char target[GFC_MAX_SYMBOL_LEN + 1]; |
facf0354 ML |
11505 | |
11506 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11507 | return MATCH_ERROR; | |
11508 | ||
11509 | gfc_simd_clause clause = SIMD_NONE; | |
11510 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11511 | clause = SIMD_NOTINBRANCH; | |
11512 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11513 | clause = SIMD_INBRANCH; | |
11514 | ||
e8cecccc ML |
11515 | if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES) |
11516 | { | |
11517 | const char *abi = targetm.get_multilib_abi_name (); | |
11518 | if (abi == NULL || strcmp (abi, target) != 0) | |
11519 | return MATCH_YES; | |
11520 | } | |
11521 | ||
facf0354 ML |
11522 | if (gfc_vectorized_builtins == NULL) |
11523 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11524 | ||
11525 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11526 | sprintf (r, "__builtin_%s", builtin); | |
11527 | ||
11528 | bool existed; | |
11529 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11530 | value |= clause; | |
11531 | if (existed) | |
11532 | free (r); | |
11533 | ||
11534 | return MATCH_YES; | |
11535 | } | |
2bd86b95 HA |
11536 | |
11537 | /* Match an !GCC$ IVDEP statement. | |
11538 | When we come here, we have already matched the !GCC$ IVDEP string. */ | |
11539 | ||
11540 | match | |
11541 | gfc_match_gcc_ivdep (void) | |
11542 | { | |
11543 | if (gfc_match_eos () == MATCH_YES) | |
11544 | { | |
11545 | directive_ivdep = true; | |
11546 | return MATCH_YES; | |
11547 | } | |
11548 | ||
11549 | gfc_error ("Syntax error in !GCC$ IVDEP directive at %C"); | |
11550 | return MATCH_ERROR; | |
11551 | } | |
11552 | ||
11553 | /* Match an !GCC$ VECTOR statement. | |
11554 | When we come here, we have already matched the !GCC$ VECTOR string. */ | |
11555 | ||
11556 | match | |
11557 | gfc_match_gcc_vector (void) | |
11558 | { | |
11559 | if (gfc_match_eos () == MATCH_YES) | |
11560 | { | |
11561 | directive_vector = true; | |
11562 | directive_novector = false; | |
11563 | return MATCH_YES; | |
11564 | } | |
11565 | ||
11566 | gfc_error ("Syntax error in !GCC$ VECTOR directive at %C"); | |
11567 | return MATCH_ERROR; | |
11568 | } | |
11569 | ||
11570 | /* Match an !GCC$ NOVECTOR statement. | |
11571 | When we come here, we have already matched the !GCC$ NOVECTOR string. */ | |
11572 | ||
11573 | match | |
11574 | gfc_match_gcc_novector (void) | |
11575 | { | |
11576 | if (gfc_match_eos () == MATCH_YES) | |
11577 | { | |
11578 | directive_novector = true; | |
11579 | directive_vector = false; | |
11580 | return MATCH_YES; | |
11581 | } | |
11582 | ||
11583 | gfc_error ("Syntax error in !GCC$ NOVECTOR directive at %C"); | |
11584 | return MATCH_ERROR; | |
11585 | } |