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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" |
ca39e6f2 FXC |
31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
37 | |
38 | ||
524af0d6 | 39 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
40 | |
41 | ||
2054fc29 | 42 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
46fa431d | 47 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
6f855a26 | 57 | static int attr_seen; |
6de9cd9a | 58 | |
a8b3b0b6 | 59 | /* The current binding label (if any). */ |
9975a30b | 60 | static const char* curr_binding_label; |
a8b3b0b6 CR |
61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
25d8f0a2 TS |
68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
6de9cd9a DN |
92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
1c8bcdf7 | 96 | bool gfc_matching_function; |
e2d29968 | 97 | |
170a8bd6 EB |
98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
facf0354 ML |
101 | /* Map of middle-end built-ins that should be vectorized. */ |
102 | hash_map<nofree_string_hash, int> *gfc_vectorized_builtins; | |
103 | ||
5bab4c96 PT |
104 | /* If a kind expression of a component of a parameterized derived type is |
105 | parameterized, temporarily store the expression here. */ | |
106 | static gfc_expr *saved_kind_expr = NULL; | |
107 | ||
108 | /* Used to store the parameter list arising in a PDT declaration and | |
109 | in the typespec of a PDT variable or component. */ | |
110 | static gfc_actual_arglist *decl_type_param_list; | |
111 | static gfc_actual_arglist *type_param_spec_list; | |
112 | ||
294fbfc8 TS |
113 | /********************* DATA statement subroutines *********************/ |
114 | ||
2220652d PT |
115 | static bool in_match_data = false; |
116 | ||
117 | bool | |
118 | gfc_in_match_data (void) | |
119 | { | |
120 | return in_match_data; | |
121 | } | |
122 | ||
ca39e6f2 FXC |
123 | static void |
124 | set_in_match_data (bool set_value) | |
2220652d PT |
125 | { |
126 | in_match_data = set_value; | |
127 | } | |
128 | ||
294fbfc8 TS |
129 | /* Free a gfc_data_variable structure and everything beneath it. */ |
130 | ||
131 | static void | |
636dff67 | 132 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
133 | { |
134 | gfc_data_variable *q; | |
135 | ||
136 | for (; p; p = q) | |
137 | { | |
138 | q = p->next; | |
139 | gfc_free_expr (p->expr); | |
140 | gfc_free_iterator (&p->iter, 0); | |
141 | free_variable (p->list); | |
cede9502 | 142 | free (p); |
294fbfc8 TS |
143 | } |
144 | } | |
145 | ||
146 | ||
147 | /* Free a gfc_data_value structure and everything beneath it. */ | |
148 | ||
149 | static void | |
636dff67 | 150 | free_value (gfc_data_value *p) |
294fbfc8 TS |
151 | { |
152 | gfc_data_value *q; | |
153 | ||
154 | for (; p; p = q) | |
155 | { | |
156 | q = p->next; | |
c9d75a48 | 157 | mpz_clear (p->repeat); |
294fbfc8 | 158 | gfc_free_expr (p->expr); |
cede9502 | 159 | free (p); |
294fbfc8 TS |
160 | } |
161 | } | |
162 | ||
163 | ||
164 | /* Free a list of gfc_data structures. */ | |
165 | ||
166 | void | |
636dff67 | 167 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
168 | { |
169 | gfc_data *q; | |
170 | ||
171 | for (; p; p = q) | |
172 | { | |
173 | q = p->next; | |
294fbfc8 TS |
174 | free_variable (p->var); |
175 | free_value (p->value); | |
cede9502 | 176 | free (p); |
294fbfc8 TS |
177 | } |
178 | } | |
179 | ||
180 | ||
a9f6f1f2 | 181 | /* Free all data in a namespace. */ |
636dff67 | 182 | |
a9f6f1f2 | 183 | static void |
66e4ab31 | 184 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
185 | { |
186 | gfc_data *d; | |
187 | ||
188 | for (;ns->data;) | |
189 | { | |
190 | d = ns->data->next; | |
cede9502 | 191 | free (ns->data); |
a9f6f1f2 JD |
192 | ns->data = d; |
193 | } | |
194 | } | |
195 | ||
d5e2274d SB |
196 | /* Reject data parsed since the last restore point was marked. */ |
197 | ||
198 | void | |
199 | gfc_reject_data (gfc_namespace *ns) | |
200 | { | |
201 | gfc_data *d; | |
202 | ||
203 | while (ns->data && ns->data != ns->old_data) | |
204 | { | |
205 | d = ns->data->next; | |
206 | free (ns->data); | |
207 | ns->data = d; | |
208 | } | |
209 | } | |
a9f6f1f2 | 210 | |
294fbfc8 TS |
211 | static match var_element (gfc_data_variable *); |
212 | ||
213 | /* Match a list of variables terminated by an iterator and a right | |
214 | parenthesis. */ | |
215 | ||
216 | static match | |
636dff67 | 217 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
218 | { |
219 | gfc_data_variable *tail, var; | |
220 | match m; | |
221 | ||
222 | m = var_element (&var); | |
223 | if (m == MATCH_ERROR) | |
224 | return MATCH_ERROR; | |
225 | if (m == MATCH_NO) | |
226 | goto syntax; | |
227 | ||
228 | tail = gfc_get_data_variable (); | |
229 | *tail = var; | |
230 | ||
231 | parent->list = tail; | |
232 | ||
233 | for (;;) | |
234 | { | |
235 | if (gfc_match_char (',') != MATCH_YES) | |
236 | goto syntax; | |
237 | ||
238 | m = gfc_match_iterator (&parent->iter, 1); | |
239 | if (m == MATCH_YES) | |
240 | break; | |
241 | if (m == MATCH_ERROR) | |
242 | return MATCH_ERROR; | |
243 | ||
244 | m = var_element (&var); | |
245 | if (m == MATCH_ERROR) | |
246 | return MATCH_ERROR; | |
247 | if (m == MATCH_NO) | |
248 | goto syntax; | |
249 | ||
250 | tail->next = gfc_get_data_variable (); | |
251 | tail = tail->next; | |
252 | ||
253 | *tail = var; | |
254 | } | |
255 | ||
256 | if (gfc_match_char (')') != MATCH_YES) | |
257 | goto syntax; | |
258 | return MATCH_YES; | |
259 | ||
260 | syntax: | |
261 | gfc_syntax_error (ST_DATA); | |
262 | return MATCH_ERROR; | |
263 | } | |
264 | ||
265 | ||
266 | /* Match a single element in a data variable list, which can be a | |
267 | variable-iterator list. */ | |
268 | ||
269 | static match | |
7b901ac4 | 270 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
271 | { |
272 | match m; | |
273 | gfc_symbol *sym; | |
274 | ||
7b901ac4 | 275 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
276 | |
277 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 278 | return var_list (new_var); |
294fbfc8 | 279 | |
7b901ac4 | 280 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
281 | if (m != MATCH_YES) |
282 | return m; | |
283 | ||
094a0ecc SK |
284 | if (new_var->expr->expr_type == EXPR_CONSTANT |
285 | && new_var->expr->symtree == NULL) | |
286 | { | |
287 | gfc_error ("Inquiry parameter cannot appear in a " | |
288 | "data-stmt-object-list at %C"); | |
289 | return MATCH_ERROR; | |
290 | } | |
291 | ||
7b901ac4 | 292 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 293 | |
f37e928c | 294 | /* Symbol should already have an associated type. */ |
524af0d6 | 295 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
296 | return MATCH_ERROR; |
297 | ||
636dff67 SK |
298 | if (!sym->attr.function && gfc_current_ns->parent |
299 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 300 | { |
c4100eae | 301 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 302 | "statement at %C", sym->name); |
294fbfc8 TS |
303 | return MATCH_ERROR; |
304 | } | |
305 | ||
4075a94e | 306 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 307 | && sym->attr.in_common |
524af0d6 | 308 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 309 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 310 | sym->name)) |
4075a94e | 311 | return MATCH_ERROR; |
294fbfc8 | 312 | |
524af0d6 | 313 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
314 | return MATCH_ERROR; |
315 | ||
316 | return MATCH_YES; | |
317 | } | |
318 | ||
319 | ||
320 | /* Match the top-level list of data variables. */ | |
321 | ||
322 | static match | |
636dff67 | 323 | top_var_list (gfc_data *d) |
294fbfc8 | 324 | { |
7b901ac4 | 325 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
326 | match m; |
327 | ||
328 | tail = NULL; | |
329 | ||
330 | for (;;) | |
331 | { | |
332 | m = var_element (&var); | |
333 | if (m == MATCH_NO) | |
334 | goto syntax; | |
335 | if (m == MATCH_ERROR) | |
336 | return MATCH_ERROR; | |
337 | ||
7b901ac4 KG |
338 | new_var = gfc_get_data_variable (); |
339 | *new_var = var; | |
bebf94af SK |
340 | if (new_var->expr) |
341 | new_var->expr->where = gfc_current_locus; | |
294fbfc8 TS |
342 | |
343 | if (tail == NULL) | |
7b901ac4 | 344 | d->var = new_var; |
294fbfc8 | 345 | else |
7b901ac4 | 346 | tail->next = new_var; |
294fbfc8 | 347 | |
7b901ac4 | 348 | tail = new_var; |
294fbfc8 TS |
349 | |
350 | if (gfc_match_char ('/') == MATCH_YES) | |
351 | break; | |
352 | if (gfc_match_char (',') != MATCH_YES) | |
353 | goto syntax; | |
354 | } | |
355 | ||
356 | return MATCH_YES; | |
357 | ||
358 | syntax: | |
359 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 360 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
361 | return MATCH_ERROR; |
362 | } | |
363 | ||
364 | ||
365 | static match | |
636dff67 | 366 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
367 | { |
368 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 369 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
370 | gfc_expr *expr; |
371 | match m; | |
36d3fb4c | 372 | locus old_loc; |
294fbfc8 TS |
373 | |
374 | m = gfc_match_literal_constant (&expr, 1); | |
375 | if (m == MATCH_YES) | |
376 | { | |
377 | *result = expr; | |
378 | return MATCH_YES; | |
379 | } | |
380 | ||
381 | if (m == MATCH_ERROR) | |
382 | return MATCH_ERROR; | |
383 | ||
384 | m = gfc_match_null (result); | |
385 | if (m != MATCH_NO) | |
386 | return m; | |
387 | ||
36d3fb4c PT |
388 | old_loc = gfc_current_locus; |
389 | ||
390 | /* Should this be a structure component, try to match it | |
391 | before matching a name. */ | |
392 | m = gfc_match_rvalue (result); | |
393 | if (m == MATCH_ERROR) | |
394 | return m; | |
395 | ||
396 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
397 | { | |
524af0d6 | 398 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
399 | m = MATCH_ERROR; |
400 | return m; | |
401 | } | |
46f4f794 | 402 | else if (m == MATCH_YES) |
b6e841a6 | 403 | { |
19adb97a SK |
404 | /* If a parameter inquiry ends up here, symtree is NULL but **result |
405 | contains the right constant expression. Check here. */ | |
406 | if ((*result)->symtree == NULL | |
407 | && (*result)->expr_type == EXPR_CONSTANT | |
408 | && ((*result)->ts.type == BT_INTEGER | |
409 | || (*result)->ts.type == BT_REAL)) | |
410 | return m; | |
411 | ||
b6e841a6 SK |
412 | /* F2018:R845 data-stmt-constant is initial-data-target. |
413 | A data-stmt-constant shall be ... initial-data-target if and | |
414 | only if the corresponding data-stmt-object has the POINTER | |
415 | attribute. ... If data-stmt-constant is initial-data-target | |
416 | the corresponding data statement object shall be | |
417 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
418 | data target; the data statement object is initially associated | |
419 | with the target. */ | |
420 | if ((*result)->symtree->n.sym->attr.save | |
421 | && (*result)->symtree->n.sym->attr.target) | |
422 | return m; | |
423 | gfc_free_expr (*result); | |
424 | } | |
36d3fb4c PT |
425 | |
426 | gfc_current_locus = old_loc; | |
427 | ||
294fbfc8 TS |
428 | m = gfc_match_name (name); |
429 | if (m != MATCH_YES) | |
430 | return m; | |
431 | ||
432 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
433 | return MATCH_ERROR; | |
434 | ||
c3f34952 TB |
435 | if (sym && sym->attr.generic) |
436 | dt_sym = gfc_find_dt_in_generic (sym); | |
437 | ||
294fbfc8 | 438 | if (sym == NULL |
c3f34952 | 439 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 440 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 441 | { |
c4100eae | 442 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 443 | name); |
89f1f37e | 444 | *result = NULL; |
294fbfc8 TS |
445 | return MATCH_ERROR; |
446 | } | |
f6288c24 | 447 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 448 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 449 | |
d46e0870 JD |
450 | /* Check to see if the value is an initialization array expression. */ |
451 | if (sym->value->expr_type == EXPR_ARRAY) | |
452 | { | |
453 | gfc_current_locus = old_loc; | |
454 | ||
455 | m = gfc_match_init_expr (result); | |
456 | if (m == MATCH_ERROR) | |
457 | return m; | |
458 | ||
459 | if (m == MATCH_YES) | |
460 | { | |
524af0d6 | 461 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
462 | m = MATCH_ERROR; |
463 | ||
464 | if ((*result)->expr_type == EXPR_CONSTANT) | |
465 | return m; | |
466 | else | |
467 | { | |
468 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
469 | return MATCH_ERROR; | |
470 | } | |
471 | } | |
472 | } | |
473 | ||
294fbfc8 TS |
474 | *result = gfc_copy_expr (sym->value); |
475 | return MATCH_YES; | |
476 | } | |
477 | ||
478 | ||
479 | /* Match a list of values in a DATA statement. The leading '/' has | |
480 | already been seen at this point. */ | |
481 | ||
482 | static match | |
636dff67 | 483 | top_val_list (gfc_data *data) |
294fbfc8 | 484 | { |
7b901ac4 | 485 | gfc_data_value *new_val, *tail; |
294fbfc8 | 486 | gfc_expr *expr; |
294fbfc8 TS |
487 | match m; |
488 | ||
489 | tail = NULL; | |
490 | ||
491 | for (;;) | |
492 | { | |
493 | m = match_data_constant (&expr); | |
494 | if (m == MATCH_NO) | |
495 | goto syntax; | |
496 | if (m == MATCH_ERROR) | |
497 | return MATCH_ERROR; | |
498 | ||
7b901ac4 KG |
499 | new_val = gfc_get_data_value (); |
500 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
501 | |
502 | if (tail == NULL) | |
7b901ac4 | 503 | data->value = new_val; |
294fbfc8 | 504 | else |
7b901ac4 | 505 | tail->next = new_val; |
294fbfc8 | 506 | |
7b901ac4 | 507 | tail = new_val; |
294fbfc8 TS |
508 | |
509 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
510 | { | |
511 | tail->expr = expr; | |
f2112868 | 512 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
513 | } |
514 | else | |
515 | { | |
46f4f794 | 516 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 517 | gfc_free_expr (expr); |
294fbfc8 TS |
518 | |
519 | m = match_data_constant (&tail->expr); | |
520 | if (m == MATCH_NO) | |
521 | goto syntax; | |
522 | if (m == MATCH_ERROR) | |
523 | return MATCH_ERROR; | |
524 | } | |
525 | ||
526 | if (gfc_match_char ('/') == MATCH_YES) | |
527 | break; | |
528 | if (gfc_match_char (',') == MATCH_NO) | |
529 | goto syntax; | |
530 | } | |
531 | ||
532 | return MATCH_YES; | |
533 | ||
534 | syntax: | |
535 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 536 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
537 | return MATCH_ERROR; |
538 | } | |
539 | ||
540 | ||
541 | /* Matches an old style initialization. */ | |
542 | ||
543 | static match | |
544 | match_old_style_init (const char *name) | |
545 | { | |
546 | match m; | |
547 | gfc_symtree *st; | |
ed0e3607 | 548 | gfc_symbol *sym; |
294fbfc8 TS |
549 | gfc_data *newdata; |
550 | ||
551 | /* Set up data structure to hold initializers. */ | |
552 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
553 | sym = st->n.sym; |
554 | ||
294fbfc8 TS |
555 | newdata = gfc_get_data (); |
556 | newdata->var = gfc_get_data_variable (); | |
557 | newdata->var->expr = gfc_get_variable_expr (st); | |
e11449d1 | 558 | newdata->var->expr->where = sym->declared_at; |
8c5c0b80 | 559 | newdata->where = gfc_current_locus; |
294fbfc8 | 560 | |
66e4ab31 | 561 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
562 | m = top_val_list (newdata); |
563 | if (m != MATCH_YES) | |
564 | { | |
cede9502 | 565 | free (newdata); |
294fbfc8 TS |
566 | return m; |
567 | } | |
568 | ||
569 | if (gfc_pure (NULL)) | |
570 | { | |
571 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 572 | free (newdata); |
294fbfc8 TS |
573 | return MATCH_ERROR; |
574 | } | |
ccd7751b | 575 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 576 | |
ed0e3607 | 577 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 578 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 579 | { |
cede9502 | 580 | free (newdata); |
ed0e3607 AL |
581 | return MATCH_ERROR; |
582 | } | |
583 | ||
294fbfc8 TS |
584 | /* Chain in namespace list of DATA initializers. */ |
585 | newdata->next = gfc_current_ns->data; | |
586 | gfc_current_ns->data = newdata; | |
587 | ||
588 | return m; | |
589 | } | |
590 | ||
636dff67 | 591 | |
294fbfc8 | 592 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 593 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 594 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 595 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
596 | |
597 | match | |
598 | gfc_match_data (void) | |
599 | { | |
7b901ac4 | 600 | gfc_data *new_data; |
02543f02 | 601 | gfc_expr *e; |
bebf94af | 602 | gfc_ref *ref; |
294fbfc8 TS |
603 | match m; |
604 | ||
5f0ba745 SK |
605 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
606 | if ((gfc_current_state () == COMP_FUNCTION | |
607 | || gfc_current_state () == COMP_SUBROUTINE) | |
608 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
609 | { | |
610 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
611 | return MATCH_ERROR; | |
612 | } | |
613 | ||
ca39e6f2 | 614 | set_in_match_data (true); |
2220652d | 615 | |
294fbfc8 TS |
616 | for (;;) |
617 | { | |
7b901ac4 KG |
618 | new_data = gfc_get_data (); |
619 | new_data->where = gfc_current_locus; | |
294fbfc8 | 620 | |
7b901ac4 | 621 | m = top_var_list (new_data); |
294fbfc8 TS |
622 | if (m != MATCH_YES) |
623 | goto cleanup; | |
624 | ||
c034c38f SK |
625 | if (new_data->var->iter.var |
626 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
627 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
628 | && new_data->var->list | |
629 | && new_data->var->list->expr | |
630 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
631 | && new_data->var->list->expr->ref | |
632 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
633 | { | |
634 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
635 | "statement", &new_data->var->list->expr->where); | |
636 | goto cleanup; | |
637 | } | |
638 | ||
02543f02 SK |
639 | /* Check for an entity with an allocatable component, which is not |
640 | allowed. */ | |
641 | e = new_data->var->expr; | |
642 | if (e) | |
643 | { | |
644 | bool invalid; | |
645 | ||
646 | invalid = false; | |
bebf94af | 647 | for (ref = e->ref; ref; ref = ref->next) |
02543f02 SK |
648 | if ((ref->type == REF_COMPONENT |
649 | && ref->u.c.component->attr.allocatable) | |
650 | || (ref->type == REF_ARRAY | |
651 | && e->symtree->n.sym->attr.pointer != 1 | |
652 | && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED)) | |
653 | invalid = true; | |
654 | ||
655 | if (invalid) | |
656 | { | |
657 | gfc_error ("Allocatable component or deferred-shaped array " | |
658 | "near %C in DATA statement"); | |
659 | goto cleanup; | |
660 | } | |
bebf94af SK |
661 | |
662 | /* F2008:C567 (R536) A data-i-do-object or a variable that appears | |
663 | as a data-stmt-object shall not be an object designator in which | |
664 | a pointer appears other than as the entire rightmost part-ref. */ | |
665 | ref = e->ref; | |
666 | if (e->symtree->n.sym->ts.type == BT_DERIVED | |
667 | && e->symtree->n.sym->attr.pointer | |
668 | && ref->type == REF_COMPONENT) | |
669 | goto partref; | |
670 | ||
671 | for (; ref; ref = ref->next) | |
672 | if (ref->type == REF_COMPONENT | |
673 | && ref->u.c.component->attr.pointer | |
674 | && ref->next) | |
675 | goto partref; | |
02543f02 SK |
676 | } |
677 | ||
7b901ac4 | 678 | m = top_val_list (new_data); |
294fbfc8 TS |
679 | if (m != MATCH_YES) |
680 | goto cleanup; | |
681 | ||
7b901ac4 KG |
682 | new_data->next = gfc_current_ns->data; |
683 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
684 | |
685 | if (gfc_match_eos () == MATCH_YES) | |
686 | break; | |
687 | ||
688 | gfc_match_char (','); /* Optional comma */ | |
689 | } | |
690 | ||
ca39e6f2 | 691 | set_in_match_data (false); |
2220652d | 692 | |
294fbfc8 TS |
693 | if (gfc_pure (NULL)) |
694 | { | |
695 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
696 | return MATCH_ERROR; | |
697 | } | |
ccd7751b | 698 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 699 | |
294fbfc8 TS |
700 | return MATCH_YES; |
701 | ||
bebf94af SK |
702 | partref: |
703 | ||
704 | gfc_error ("part-ref with pointer attribute near %L is not " | |
705 | "rightmost part-ref of data-stmt-object", | |
706 | &e->where); | |
707 | ||
294fbfc8 | 708 | cleanup: |
ca39e6f2 | 709 | set_in_match_data (false); |
7b901ac4 | 710 | gfc_free_data (new_data); |
294fbfc8 TS |
711 | return MATCH_ERROR; |
712 | } | |
713 | ||
714 | ||
715 | /************************ Declaration statements *********************/ | |
716 | ||
d3a9eea2 | 717 | |
f6288c24 FR |
718 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
719 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 720 | and is surrounded by '/'. |
f6288c24 FR |
721 | The typespec ts must match the typespec of the variable which the |
722 | clist is initializing. | |
6442a6f4 | 723 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
724 | corresponding to array elements or a scalar (as == NULL). */ |
725 | ||
726 | static match | |
727 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
728 | { | |
729 | gfc_constructor_base array_head = NULL; | |
730 | gfc_expr *expr = NULL; | |
e11449d1 | 731 | match m = MATCH_ERROR; |
f6288c24 | 732 | locus where; |
9b24c104 | 733 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
734 | bool scalar; |
735 | int cmp; | |
736 | ||
737 | gcc_assert (ts); | |
738 | ||
f6288c24 FR |
739 | /* We have already matched '/' - now look for a constant list, as with |
740 | top_val_list from decl.c, but append the result to an array. */ | |
741 | if (gfc_match ("/") == MATCH_YES) | |
742 | { | |
743 | gfc_error ("Empty old style initializer list at %C"); | |
e11449d1 | 744 | return MATCH_ERROR; |
f6288c24 FR |
745 | } |
746 | ||
747 | where = gfc_current_locus; | |
e11449d1 FR |
748 | scalar = !as || !as->rank; |
749 | ||
750 | if (!scalar && !spec_size (as, &as_size)) | |
751 | { | |
752 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
753 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
754 | /* Nothing to cleanup yet. */ | |
755 | return MATCH_ERROR; | |
756 | } | |
757 | ||
758 | mpz_init_set_ui (repeat, 0); | |
759 | ||
f6288c24 FR |
760 | for (;;) |
761 | { | |
762 | m = match_data_constant (&expr); | |
763 | if (m != MATCH_YES) | |
764 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
765 | if (m == MATCH_NO) | |
766 | goto syntax; | |
767 | if (m == MATCH_ERROR) | |
768 | goto cleanup; | |
769 | ||
770 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
771 | if ( gfc_match_char ('*') == MATCH_YES) | |
772 | { | |
773 | if (scalar) | |
774 | { | |
775 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
776 | goto cleanup; | |
777 | } | |
778 | if (expr->ts.type != BT_INTEGER) | |
779 | { | |
780 | gfc_error ("Repeat spec must be an integer at %C"); | |
781 | goto cleanup; | |
782 | } | |
783 | mpz_set (repeat, expr->value.integer); | |
784 | gfc_free_expr (expr); | |
785 | expr = NULL; | |
786 | ||
787 | m = match_data_constant (&expr); | |
788 | if (m == MATCH_NO) | |
e11449d1 FR |
789 | { |
790 | m = MATCH_ERROR; | |
791 | gfc_error ("Expected data constant after repeat spec at %C"); | |
792 | } | |
f6288c24 FR |
793 | if (m != MATCH_YES) |
794 | goto cleanup; | |
795 | } | |
796 | /* No repeat spec, we matched the data constant itself. */ | |
797 | else | |
798 | mpz_set_ui (repeat, 1); | |
799 | ||
800 | if (!scalar) | |
801 | { | |
802 | /* Add the constant initializer as many times as repeated. */ | |
803 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
804 | { | |
805 | /* Make sure types of elements match */ | |
806 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
807 | && !gfc_convert_type (expr, ts, 1)) | |
808 | goto cleanup; | |
809 | ||
810 | gfc_constructor_append_expr (&array_head, | |
811 | gfc_copy_expr (expr), &gfc_current_locus); | |
812 | } | |
813 | ||
814 | gfc_free_expr (expr); | |
815 | expr = NULL; | |
816 | } | |
817 | ||
818 | /* For scalar initializers quit after one element. */ | |
819 | else | |
820 | { | |
821 | if(gfc_match_char ('/') != MATCH_YES) | |
822 | { | |
823 | gfc_error ("End of scalar initializer expected at %C"); | |
824 | goto cleanup; | |
825 | } | |
826 | break; | |
827 | } | |
828 | ||
829 | if (gfc_match_char ('/') == MATCH_YES) | |
830 | break; | |
831 | if (gfc_match_char (',') == MATCH_NO) | |
832 | goto syntax; | |
833 | } | |
834 | ||
e11449d1 FR |
835 | /* If we break early from here out, we encountered an error. */ |
836 | m = MATCH_ERROR; | |
837 | ||
f6288c24 FR |
838 | /* Set up expr as an array constructor. */ |
839 | if (!scalar) | |
840 | { | |
841 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
842 | expr->ts = *ts; | |
843 | expr->value.constructor = array_head; | |
844 | ||
845 | expr->rank = as->rank; | |
846 | expr->shape = gfc_get_shape (expr->rank); | |
847 | ||
9b24c104 FR |
848 | /* Validate sizes. We built expr ourselves, so cons_size will be |
849 | constant (we fail above for non-constant expressions). | |
e11449d1 | 850 | We still need to verify that the sizes match. */ |
9b24c104 | 851 | gcc_assert (gfc_array_size (expr, &cons_size)); |
e11449d1 FR |
852 | cmp = mpz_cmp (cons_size, as_size); |
853 | if (cmp < 0) | |
854 | gfc_error ("Not enough elements in array initializer at %C"); | |
855 | else if (cmp > 0) | |
856 | gfc_error ("Too many elements in array initializer at %C"); | |
9b24c104 | 857 | mpz_clear (cons_size); |
f6288c24 | 858 | if (cmp) |
9b24c104 | 859 | goto cleanup; |
f6288c24 FR |
860 | } |
861 | ||
862 | /* Make sure scalar types match. */ | |
863 | else if (!gfc_compare_types (&expr->ts, ts) | |
864 | && !gfc_convert_type (expr, ts, 1)) | |
865 | goto cleanup; | |
866 | ||
867 | if (expr->ts.u.cl) | |
868 | expr->ts.u.cl->length_from_typespec = 1; | |
869 | ||
870 | *result = expr; | |
e11449d1 FR |
871 | m = MATCH_YES; |
872 | goto done; | |
f6288c24 FR |
873 | |
874 | syntax: | |
e11449d1 | 875 | m = MATCH_ERROR; |
f6288c24 FR |
876 | gfc_error ("Syntax error in old style initializer list at %C"); |
877 | ||
878 | cleanup: | |
879 | if (expr) | |
880 | expr->value.constructor = NULL; | |
881 | gfc_free_expr (expr); | |
882 | gfc_constructor_free (array_head); | |
e11449d1 FR |
883 | |
884 | done: | |
f6288c24 | 885 | mpz_clear (repeat); |
e11449d1 FR |
886 | if (!scalar) |
887 | mpz_clear (as_size); | |
888 | return m; | |
f6288c24 FR |
889 | } |
890 | ||
891 | ||
eea58adb | 892 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 893 | |
524af0d6 | 894 | static bool |
d3a9eea2 TB |
895 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
896 | { | |
93d1ab50 | 897 | int i, j; |
d3a9eea2 | 898 | |
63fbf586 TB |
899 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
900 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
901 | { | |
902 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 903 | return false; |
63fbf586 | 904 | } |
c62c6622 | 905 | |
d3a9eea2 TB |
906 | if (to->rank == 0 && from->rank > 0) |
907 | { | |
908 | to->rank = from->rank; | |
909 | to->type = from->type; | |
910 | to->cray_pointee = from->cray_pointee; | |
911 | to->cp_was_assumed = from->cp_was_assumed; | |
912 | ||
913 | for (i = 0; i < to->corank; i++) | |
914 | { | |
93d1ab50 SK |
915 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
916 | cleans up elsewhere. */ | |
917 | j = from->rank + i; | |
918 | if (j >= GFC_MAX_DIMENSIONS) | |
919 | break; | |
920 | ||
921 | to->lower[j] = to->lower[i]; | |
922 | to->upper[j] = to->upper[i]; | |
d3a9eea2 TB |
923 | } |
924 | for (i = 0; i < from->rank; i++) | |
925 | { | |
926 | if (copy) | |
927 | { | |
928 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
929 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
930 | } | |
931 | else | |
932 | { | |
933 | to->lower[i] = from->lower[i]; | |
934 | to->upper[i] = from->upper[i]; | |
935 | } | |
936 | } | |
937 | } | |
938 | else if (to->corank == 0 && from->corank > 0) | |
939 | { | |
940 | to->corank = from->corank; | |
941 | to->cotype = from->cotype; | |
942 | ||
943 | for (i = 0; i < from->corank; i++) | |
944 | { | |
93d1ab50 SK |
945 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
946 | cleans up elsewhere. */ | |
947 | j = to->rank + i; | |
948 | if (j >= GFC_MAX_DIMENSIONS) | |
949 | break; | |
950 | ||
d3a9eea2 TB |
951 | if (copy) |
952 | { | |
93d1ab50 SK |
953 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
954 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
d3a9eea2 TB |
955 | } |
956 | else | |
957 | { | |
93d1ab50 SK |
958 | to->lower[j] = from->lower[i]; |
959 | to->upper[j] = from->upper[i]; | |
d3a9eea2 TB |
960 | } |
961 | } | |
962 | } | |
63fbf586 | 963 | |
299ab1b2 | 964 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
93d1ab50 SK |
965 | { |
966 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
967 | "allowed dimensions of %d", | |
968 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
969 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
970 | return false; | |
971 | } | |
524af0d6 | 972 | return true; |
d3a9eea2 TB |
973 | } |
974 | ||
975 | ||
6de9cd9a DN |
976 | /* Match an intent specification. Since this can only happen after an |
977 | INTENT word, a legal intent-spec must follow. */ | |
978 | ||
979 | static sym_intent | |
980 | match_intent_spec (void) | |
981 | { | |
982 | ||
983 | if (gfc_match (" ( in out )") == MATCH_YES) | |
984 | return INTENT_INOUT; | |
985 | if (gfc_match (" ( in )") == MATCH_YES) | |
986 | return INTENT_IN; | |
987 | if (gfc_match (" ( out )") == MATCH_YES) | |
988 | return INTENT_OUT; | |
989 | ||
990 | gfc_error ("Bad INTENT specification at %C"); | |
991 | return INTENT_UNKNOWN; | |
992 | } | |
993 | ||
994 | ||
995 | /* Matches a character length specification, which is either a | |
e69afb29 | 996 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
997 | |
998 | static match | |
e69afb29 | 999 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 1000 | { |
cba28dad JD |
1001 | match m; |
1002 | ||
e69afb29 SK |
1003 | *expr = NULL; |
1004 | *deferred = false; | |
1005 | ||
6de9cd9a | 1006 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
1007 | return MATCH_YES; |
1008 | ||
1009 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 1010 | { |
98a819ea | 1011 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
1012 | return MATCH_ERROR; |
1013 | ||
1014 | *deferred = true; | |
1015 | ||
6de9cd9a DN |
1016 | return MATCH_YES; |
1017 | } | |
1018 | ||
cba28dad | 1019 | m = gfc_match_expr (expr); |
f37e928c | 1020 | |
98a819ea SK |
1021 | if (m == MATCH_NO || m == MATCH_ERROR) |
1022 | return m; | |
1023 | ||
1024 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
1025 | return MATCH_ERROR; |
1026 | ||
98a819ea | 1027 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 1028 | { |
8d48826b SK |
1029 | if ((*expr)->ts.type == BT_INTEGER |
1030 | || ((*expr)->ts.type == BT_UNKNOWN | |
1031 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
1032 | return MATCH_YES; | |
1033 | ||
1034 | goto syntax; | |
1035 | } | |
1036 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
1037 | { | |
1038 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
1039 | processor dependent and its value is greater than or equal to zero. | |
1040 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
1041 | to a negative value, the length of character entities declared | |
1042 | is zero. */ | |
1043 | ||
1044 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 1045 | { |
8d48826b SK |
1046 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
1047 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 1048 | } |
8d48826b SK |
1049 | else |
1050 | goto syntax; | |
cba28dad | 1051 | } |
8d48826b SK |
1052 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1053 | goto syntax; | |
1054 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1055 | { | |
fb42421e | 1056 | bool t; |
8d48826b SK |
1057 | gfc_expr *e; |
1058 | ||
1059 | e = gfc_copy_expr (*expr); | |
1060 | ||
1061 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1062 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
1063 | if (e->ref && e->ref->type == REF_ARRAY |
1064 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
1065 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1066 | goto syntax; | |
1067 | ||
fb42421e SK |
1068 | t = gfc_reduce_init_expr (e); |
1069 | ||
8d987deb SK |
1070 | if (!t && e->ts.type == BT_UNKNOWN |
1071 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
1072 | && (flag_implicit_none |
1073 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 1074 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
1075 | { |
1076 | gfc_free_expr (e); | |
1077 | goto syntax; | |
1078 | } | |
98a819ea | 1079 | |
54b96a2d | 1080 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 1081 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
1082 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1083 | { | |
1084 | gfc_free_expr (e); | |
1085 | goto syntax; | |
1086 | } | |
1087 | ||
1088 | gfc_free_expr (e); | |
1089 | } | |
98a819ea | 1090 | |
cba28dad JD |
1091 | return m; |
1092 | ||
1093 | syntax: | |
8d48826b | 1094 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 1095 | return MATCH_ERROR; |
6de9cd9a DN |
1096 | } |
1097 | ||
1098 | ||
1099 | /* A character length is a '*' followed by a literal integer or a | |
1100 | char_len_param_value in parenthesis. */ | |
1101 | ||
1102 | static match | |
62732c30 | 1103 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 1104 | { |
5cf54585 | 1105 | int length; |
6de9cd9a DN |
1106 | match m; |
1107 | ||
f5acf0f2 | 1108 | *deferred = false; |
6de9cd9a DN |
1109 | m = gfc_match_char ('*'); |
1110 | if (m != MATCH_YES) | |
1111 | return m; | |
1112 | ||
5cf54585 | 1113 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1114 | if (m == MATCH_ERROR) |
1115 | return m; | |
1116 | ||
1117 | if (m == MATCH_YES) | |
1118 | { | |
62732c30 | 1119 | if (obsolescent_check |
524af0d6 | 1120 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1121 | return MATCH_ERROR; |
f622221a | 1122 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1123 | return m; |
1124 | } | |
1125 | ||
1126 | if (gfc_match_char ('(') == MATCH_NO) | |
1127 | goto syntax; | |
1128 | ||
e69afb29 | 1129 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1130 | if (m != MATCH_YES && gfc_matching_function) |
1131 | { | |
1132 | gfc_undo_symbols (); | |
1133 | m = MATCH_YES; | |
1134 | } | |
1135 | ||
6de9cd9a DN |
1136 | if (m == MATCH_ERROR) |
1137 | return m; | |
1138 | if (m == MATCH_NO) | |
1139 | goto syntax; | |
1140 | ||
1141 | if (gfc_match_char (')') == MATCH_NO) | |
1142 | { | |
1143 | gfc_free_expr (*expr); | |
1144 | *expr = NULL; | |
1145 | goto syntax; | |
1146 | } | |
1147 | ||
1148 | return MATCH_YES; | |
1149 | ||
1150 | syntax: | |
1151 | gfc_error ("Syntax error in character length specification at %C"); | |
1152 | return MATCH_ERROR; | |
1153 | } | |
1154 | ||
1155 | ||
9e35b386 EE |
1156 | /* Special subroutine for finding a symbol. Check if the name is found |
1157 | in the current name space. If not, and we're compiling a function or | |
1158 | subroutine and the parent compilation unit is an interface, then check | |
1159 | to see if the name we've been given is the name of the interface | |
1160 | (located in another namespace). */ | |
6de9cd9a DN |
1161 | |
1162 | static int | |
08a6b8e0 | 1163 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1164 | { |
1165 | gfc_state_data *s; | |
08a6b8e0 | 1166 | gfc_symtree *st; |
9e35b386 | 1167 | int i; |
6de9cd9a | 1168 | |
08a6b8e0 | 1169 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1170 | if (i == 0) |
08a6b8e0 TB |
1171 | { |
1172 | *result = st ? st->n.sym : NULL; | |
1173 | goto end; | |
1174 | } | |
d51347f9 | 1175 | |
6de9cd9a DN |
1176 | if (gfc_current_state () != COMP_SUBROUTINE |
1177 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1178 | goto end; |
6de9cd9a DN |
1179 | |
1180 | s = gfc_state_stack->previous; | |
1181 | if (s == NULL) | |
9e35b386 | 1182 | goto end; |
6de9cd9a DN |
1183 | |
1184 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1185 | goto end; |
6de9cd9a | 1186 | if (s->sym == NULL) |
66e4ab31 | 1187 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1188 | |
1189 | if (strcmp (name, s->sym->name) == 0) | |
1190 | { | |
1191 | *result = s->sym; | |
1192 | return 0; | |
1193 | } | |
1194 | ||
9e35b386 EE |
1195 | end: |
1196 | return i; | |
6de9cd9a DN |
1197 | } |
1198 | ||
1199 | ||
1200 | /* Special subroutine for getting a symbol node associated with a | |
1201 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1202 | symbol is created in the parent using with symtree node in the | |
1203 | child unit pointing to the symbol. If the current namespace has no | |
1204 | parent, then the symbol is just created in the current unit. */ | |
1205 | ||
1206 | static int | |
636dff67 | 1207 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1208 | { |
1209 | gfc_symtree *st; | |
1210 | gfc_symbol *sym; | |
a7ca4d8d | 1211 | int rc = 0; |
6de9cd9a | 1212 | |
1a492601 PT |
1213 | /* Module functions have to be left in their own namespace because |
1214 | they have potentially (almost certainly!) already been referenced. | |
1215 | In this sense, they are rather like external functions. This is | |
1216 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1217 | space is set to point to the master function, so that the fake | |
1218 | result mechanism can work. */ | |
1219 | if (module_fcn_entry) | |
6c12686b PT |
1220 | { |
1221 | /* Present if entry is declared to be a module procedure. */ | |
1222 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1223 | |
6c12686b PT |
1224 | if (*result == NULL) |
1225 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1226 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1227 | && (*result)->ts.type == BT_UNKNOWN |
1228 | && sym->attr.flavor == FL_UNKNOWN) | |
1229 | /* Pick up the typespec for the entry, if declared in the function | |
1230 | body. Note that this symbol is FL_UNKNOWN because it will | |
1231 | only have appeared in a type declaration. The local symtree | |
1232 | is set to point to the module symbol and a unique symtree | |
1233 | to the local version. This latter ensures a correct clearing | |
1234 | of the symbols. */ | |
2e32a71e PT |
1235 | { |
1236 | /* If the ENTRY proceeds its specification, we need to ensure | |
1237 | that this does not raise a "has no IMPLICIT type" error. */ | |
1238 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1239 | sym->attr.untyped = 1; |
2e32a71e | 1240 | |
0e5a218b | 1241 | (*result)->ts = sym->ts; |
2e32a71e PT |
1242 | |
1243 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1244 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1245 | can be applied. */ |
1246 | (*result)->ns = gfc_current_ns; | |
1247 | ||
1248 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1249 | st->n.sym = *result; | |
1250 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1251 | sym->refs++; |
2e32a71e PT |
1252 | st->n.sym = sym; |
1253 | } | |
6c12686b | 1254 | } |
68ea355b PT |
1255 | else |
1256 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1257 | |
a7ca4d8d PT |
1258 | if (rc) |
1259 | return rc; | |
1260 | ||
68ea355b | 1261 | sym = *result; |
79124116 PT |
1262 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1263 | return rc; | |
6de9cd9a | 1264 | |
96c8b253 | 1265 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4668d6f9 PT |
1266 | { |
1267 | /* Create a partially populated interface symbol to carry the | |
1268 | characteristics of the procedure and the result. */ | |
c064374d | 1269 | sym->tlink = gfc_new_symbol (name, sym->ns); |
96c8b253 | 1270 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
c064374d | 1271 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1272 | if (sym->attr.dimension) |
c064374d | 1273 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1274 | |
1275 | /* Ideally, at this point, a copy would be made of the formal | |
1276 | arguments and their namespace. However, this does not appear | |
1277 | to be necessary, albeit at the expense of not being able to | |
1278 | use gfc_compare_interfaces directly. */ | |
1279 | ||
1280 | if (sym->result && sym->result != sym) | |
1281 | { | |
c064374d | 1282 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1283 | sym->result = NULL; |
1284 | } | |
1285 | else if (sym->result) | |
1286 | { | |
c064374d | 1287 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1288 | } |
1289 | } | |
1290 | else if (sym && !sym->gfc_new | |
1291 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1292 | { |
cda7004b PT |
1293 | /* Trap another encompassed procedure with the same name. All |
1294 | these conditions are necessary to avoid picking up an entry | |
1295 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1296 | this is handled using gsymbols to register unique, globally |
cda7004b | 1297 | accessible names. */ |
68ea355b | 1298 | if (sym->attr.flavor != 0 |
636dff67 | 1299 | && sym->attr.proc != 0 |
64300da7 | 1300 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
636dff67 | 1301 | && sym->attr.if_source != IFSRC_UNKNOWN) |
b4439561 TB |
1302 | { |
1303 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1304 | name, &sym->declared_at); | |
1305 | return true; | |
1306 | } | |
64300da7 SK |
1307 | if (sym->attr.flavor != 0 |
1308 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
b4439561 TB |
1309 | { |
1310 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1311 | name, &sym->declared_at); | |
1312 | return true; | |
1313 | } | |
64300da7 | 1314 | |
81ea7c11 SK |
1315 | if (sym->attr.external && sym->attr.procedure |
1316 | && gfc_current_state () == COMP_CONTAINS) | |
b4439561 TB |
1317 | { |
1318 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1319 | "procedure defined at %L", | |
1320 | name, &sym->declared_at); | |
1321 | return true; | |
1322 | } | |
81ea7c11 | 1323 | |
fd3e70af JD |
1324 | /* Trap a procedure with a name the same as interface in the |
1325 | encompassing scope. */ | |
1326 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1327 | && (sym->attr.subroutine || sym->attr.function) |
1328 | && !sym->attr.mod_proc) | |
b4439561 TB |
1329 | { |
1330 | gfc_error_now ("Name %qs at %C is already defined" | |
1331 | " as a generic interface at %L", | |
1332 | name, &sym->declared_at); | |
1333 | return true; | |
1334 | } | |
fd3e70af | 1335 | |
68ea355b PT |
1336 | /* Trap declarations of attributes in encompassing scope. The |
1337 | signature for this is that ts.kind is set. Legitimate | |
1338 | references only set ts.type. */ | |
1339 | if (sym->ts.kind != 0 | |
636dff67 SK |
1340 | && !sym->attr.implicit_type |
1341 | && sym->attr.proc == 0 | |
1342 | && gfc_current_ns->parent != NULL | |
1343 | && sym->attr.access == 0 | |
1344 | && !module_fcn_entry) | |
b4439561 TB |
1345 | { |
1346 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
96c8b253 | 1347 | "from a previous declaration", name); |
b4439561 TB |
1348 | return true; |
1349 | } | |
96c8b253 SK |
1350 | } |
1351 | ||
b74fa126 SK |
1352 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1353 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1354 | body that is declared in the scoping unit of a module or submodule. */ | |
1355 | if (sym->attr.external | |
1356 | && (sym->attr.subroutine || sym->attr.function) | |
1357 | && sym->attr.if_source == IFSRC_IFBODY | |
1358 | && !current_attr.module_procedure | |
1359 | && sym->attr.proc == PROC_MODULE | |
1360 | && gfc_state_stack->state == COMP_CONTAINS) | |
b4439561 TB |
1361 | { |
1362 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1363 | "clashes with internal procedure defined at %C", | |
1364 | name, &sym->declared_at); | |
1365 | return true; | |
1366 | } | |
b74fa126 SK |
1367 | |
1368 | if (sym && !sym->gfc_new | |
1369 | && sym->attr.flavor != FL_UNKNOWN | |
1370 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1371 | && gfc_state_stack->state == COMP_CONTAINS | |
1372 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
b4439561 TB |
1373 | { |
1374 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1375 | name, &sym->declared_at); | |
1376 | return true; | |
1377 | } | |
68ea355b PT |
1378 | |
1379 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1380 | return rc; | |
6de9cd9a | 1381 | |
1a492601 PT |
1382 | /* Module function entries will already have a symtree in |
1383 | the current namespace but will need one at module level. */ | |
1384 | if (module_fcn_entry) | |
6c12686b PT |
1385 | { |
1386 | /* Present if entry is declared to be a module procedure. */ | |
1387 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1388 | if (st == NULL) | |
1389 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1390 | } | |
1a492601 PT |
1391 | else |
1392 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1393 | |
6de9cd9a DN |
1394 | st->n.sym = sym; |
1395 | sym->refs++; | |
1396 | ||
66e4ab31 | 1397 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1398 | |
1a492601 | 1399 | if (((sym->ns->proc_name != NULL |
96c8b253 SK |
1400 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1401 | && sym->attr.proc != PROC_MODULE) | |
1402 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1403 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
6de9cd9a DN |
1404 | rc = 2; |
1405 | ||
1406 | return rc; | |
1407 | } | |
1408 | ||
1409 | ||
a8b3b0b6 CR |
1410 | /* Verify that the given symbol representing a parameter is C |
1411 | interoperable, by checking to see if it was marked as such after | |
1412 | its declaration. If the given symbol is not interoperable, a | |
1413 | warning is reported, thus removing the need to return the status to | |
1414 | the calling function. The standard does not require the user use | |
1415 | one of the iso_c_binding named constants to declare an | |
1416 | interoperable parameter, but we can't be sure if the param is C | |
1417 | interop or not if the user doesn't. For example, integer(4) may be | |
1418 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1419 | a number of the C types, which causes a problem because the | |
1420 | compiler can't know which one. This code is almost certainly not | |
1421 | portable, and the user will get what they deserve if the C type | |
1422 | across platforms isn't always interoperable with integer(4). If | |
1423 | the user had used something like integer(c_int) or integer(c_long), | |
1424 | the compiler could have automatically handled the varying sizes | |
1425 | across platforms. */ | |
1426 | ||
524af0d6 | 1427 | bool |
00820a2a | 1428 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1429 | { |
1430 | int is_c_interop = 0; | |
524af0d6 | 1431 | bool retval = true; |
a8b3b0b6 CR |
1432 | |
1433 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1434 | Don't repeat the checks here. */ | |
1435 | if (sym->attr.implicit_type) | |
524af0d6 | 1436 | return true; |
f5acf0f2 | 1437 | |
a8b3b0b6 CR |
1438 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1439 | they're interoperable if they're BIND(C) and their params are all | |
1440 | interoperable. */ | |
1441 | if (sym->attr.flavor == FL_PROCEDURE) | |
1442 | { | |
1443 | if (sym->attr.is_bind_c == 0) | |
1444 | { | |
4daa149b TB |
1445 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1446 | "attribute to be C interoperable", sym->name, | |
1447 | &(sym->declared_at)); | |
524af0d6 | 1448 | return false; |
a8b3b0b6 CR |
1449 | } |
1450 | else | |
1451 | { | |
1452 | if (sym->attr.is_c_interop == 1) | |
1453 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1454 | return true; |
a8b3b0b6 CR |
1455 | else |
1456 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1457 | sym->common_block); | |
1458 | } | |
1459 | } | |
f5acf0f2 | 1460 | |
a8b3b0b6 CR |
1461 | /* See if we've stored a reference to a procedure that owns sym. */ |
1462 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1463 | { | |
1464 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1465 | { | |
524af0d6 | 1466 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1467 | |
1468 | if (is_c_interop != 1) | |
1469 | { | |
1470 | /* Make personalized messages to give better feedback. */ | |
1471 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1472 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1473 | "BIND(C) procedure %qs but is not C interoperable " | |
1474 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1475 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1476 | sym->ns->proc_name->name, |
bc21d315 | 1477 | sym->ts.u.derived->name); |
00820a2a | 1478 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1479 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1480 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1481 | "because it is polymorphic", |
1482 | sym->name, &(sym->declared_at), | |
1483 | sym->ns->proc_name->name); | |
4daa149b | 1484 | else if (warn_c_binding_type) |
48749dbc MLI |
1485 | gfc_warning (OPT_Wc_binding_type, |
1486 | "Variable %qs at %L is a dummy argument of the " | |
1487 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1488 | "interoperable", |
1489 | sym->name, &(sym->declared_at), | |
1490 | sym->ns->proc_name->name); | |
1491 | } | |
aa5e22f0 CR |
1492 | |
1493 | /* Character strings are only C interoperable if they have a | |
1494 | length of 1. */ | |
1495 | if (sym->ts.type == BT_CHARACTER) | |
1496 | { | |
bc21d315 | 1497 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1498 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1499 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1500 | { | |
c4100eae | 1501 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1502 | "must be length 1 because " |
c4100eae | 1503 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1504 | sym->name, &sym->declared_at, |
1505 | sym->ns->proc_name->name); | |
524af0d6 | 1506 | retval = false; |
aa5e22f0 CR |
1507 | } |
1508 | } | |
1509 | ||
a8b3b0b6 CR |
1510 | /* We have to make sure that any param to a bind(c) routine does |
1511 | not have the allocatable, pointer, or optional attributes, | |
1512 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1513 | if (sym->attr.allocatable == 1 |
286f737c | 1514 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1515 | "ALLOCATABLE attribute in procedure %qs " |
60f6ca95 TB |
1516 | "with BIND(C)", sym->name, |
1517 | &(sym->declared_at), | |
1518 | sym->ns->proc_name->name)) | |
1519 | retval = false; | |
1520 | ||
1521 | if (sym->attr.pointer == 1 | |
286f737c | 1522 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1523 | "POINTER attribute in procedure %qs " |
60f6ca95 TB |
1524 | "with BIND(C)", sym->name, |
1525 | &(sym->declared_at), | |
1526 | sym->ns->proc_name->name)) | |
1527 | retval = false; | |
1528 | ||
1529 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1530 | { |
c4100eae MLI |
1531 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1532 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1533 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1534 | sym->ns->proc_name->name); |
524af0d6 | 1535 | retval = false; |
a8b3b0b6 CR |
1536 | } |
1537 | ||
2e8d9212 | 1538 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1539 | { |
c4100eae MLI |
1540 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1541 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1542 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1543 | sym->ns->proc_name->name); |
524af0d6 | 1544 | retval = false; |
a8b3b0b6 | 1545 | } |
2e8d9212 | 1546 | else if (sym->attr.optional == 1 |
286f737c | 1547 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
524af0d6 | 1548 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1549 | "procedure %qs which is BIND(C)", |
1550 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1551 | sym->ns->proc_name->name)) |
1552 | retval = false; | |
a8b3b0b6 CR |
1553 | |
1554 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1555 | either assumed size or explicit shape. Deferred shape is already |
1556 | covered by the pointer/allocatable attribute. */ | |
1557 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
286f737c | 1558 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
524af0d6 | 1559 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1560 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1561 | &(sym->declared_at), |
1562 | sym->ns->proc_name->name, | |
524af0d6 JB |
1563 | &(sym->ns->proc_name->declared_at))) |
1564 | retval = false; | |
a8b3b0b6 CR |
1565 | } |
1566 | } | |
1567 | ||
1568 | return retval; | |
1569 | } | |
1570 | ||
1571 | ||
cf2b3c22 | 1572 | |
a8b3b0b6 | 1573 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1574 | |
524af0d6 | 1575 | static bool |
e69afb29 | 1576 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1577 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1578 | { |
1579 | symbol_attribute attr; | |
1580 | gfc_symbol *sym; | |
1e6025b6 | 1581 | int upper; |
bedee914 PT |
1582 | gfc_symtree *st; |
1583 | ||
1584 | /* Symbols in a submodule are host associated from the parent module or | |
1585 | submodules. Therefore, they can be overridden by declarations in the | |
1586 | submodule scope. Deal with this by attaching the existing symbol to | |
1587 | a new symtree and recycling the old symtree with a new symbol... */ | |
1588 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1589 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1590 | && st->n.sym != NULL | |
1591 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1592 | { | |
1593 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1594 | s->n.sym = st->n.sym; | |
1595 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1596 | |
bedee914 PT |
1597 | |
1598 | st->n.sym = sym; | |
1599 | sym->refs++; | |
1600 | gfc_set_sym_referenced (sym); | |
1601 | } | |
1602 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1603 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1604 | return false; |
6de9cd9a | 1605 | |
1e6025b6 TK |
1606 | /* Check if the name has already been defined as a type. The |
1607 | first letter of the symtree will be in upper case then. Of | |
1608 | course, this is only necessary if the upper case letter is | |
1609 | actually different. */ | |
1610 | ||
1611 | upper = TOUPPER(name[0]); | |
1612 | if (upper != name[0]) | |
1613 | { | |
1614 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1615 | gfc_symtree *st; | |
1e6025b6 | 1616 | |
025d57f0 MS |
1617 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1618 | strcpy (u_name, name); | |
1e6025b6 TK |
1619 | u_name[0] = upper; |
1620 | ||
1621 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1622 | ||
f6288c24 FR |
1623 | /* STRUCTURE types can alias symbol names */ |
1624 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1625 | { |
1626 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1627 | &st->n.sym->declared_at); | |
1628 | return false; | |
1629 | } | |
1630 | } | |
1631 | ||
66e4ab31 | 1632 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1633 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1634 | && (sym->attr.implicit_type == 0 |
1635 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1636 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1637 | return false; | |
6de9cd9a DN |
1638 | |
1639 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1640 | { |
1641 | sym->ts.u.cl = cl; | |
1642 | sym->ts.deferred = cl_deferred; | |
1643 | } | |
6de9cd9a DN |
1644 | |
1645 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1646 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1647 | return false; | |
6de9cd9a DN |
1648 | *as = NULL; |
1649 | ||
1650 | /* Add attribute to symbol. The copy is so that we can reset the | |
1651 | dimension attribute. */ | |
1652 | attr = current_attr; | |
1653 | attr.dimension = 0; | |
be59db2d | 1654 | attr.codimension = 0; |
6de9cd9a | 1655 | |
524af0d6 JB |
1656 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1657 | return false; | |
6de9cd9a | 1658 | |
a8b3b0b6 CR |
1659 | /* Finish any work that may need to be done for the binding label, |
1660 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1661 | is made, and before the symbol name (for data decls), so the | |
1662 | current_ts is holding the binding label, or nothing if the | |
1663 | name= attr wasn't given. Therefore, test here if we're dealing | |
1664 | with a bind(c) and make sure the binding label is set correctly. */ | |
1665 | if (sym->attr.is_bind_c == 1) | |
1666 | { | |
62603fae | 1667 | if (!sym->binding_label) |
a8b3b0b6 | 1668 | { |
ad4a2f64 TB |
1669 | /* Set the binding label and verify that if a NAME= was specified |
1670 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1671 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1672 | num_idents_on_line)) |
1673 | return false; | |
a8b3b0b6 CR |
1674 | } |
1675 | } | |
1676 | ||
1677 | /* See if we know we're in a common block, and if it's a bind(c) | |
1678 | common then we need to make sure we're an interoperable type. */ | |
1679 | if (sym->attr.in_common == 1) | |
1680 | { | |
1681 | /* Test the common block object. */ | |
1682 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1683 | && sym->ts.is_c_interop != 1) | |
1684 | { | |
4daa149b | 1685 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1686 | "must be declared with a C interoperable " |
4daa149b | 1687 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1688 | sym->name, sym->common_block->name, |
1689 | sym->common_block->name); | |
1690 | gfc_clear_error (); | |
1691 | } | |
1692 | } | |
1693 | ||
9a3db5a3 PT |
1694 | sym->attr.implied_index = 0; |
1695 | ||
5bab4c96 PT |
1696 | /* Use the parameter expressions for a parameterized derived type. */ |
1697 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1698 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1699 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1700 | ||
528622fd | 1701 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1702 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1703 | |
524af0d6 | 1704 | return true; |
6de9cd9a DN |
1705 | } |
1706 | ||
636dff67 | 1707 | |
df7cc9b5 | 1708 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1709 | truncated. If we're inside an array constructor without a typespec, we |
1710 | additionally check that all elements have the same length; check_len -1 | |
1711 | means no checking. */ | |
df7cc9b5 FW |
1712 | |
1713 | void | |
6b271a2e JB |
1714 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1715 | gfc_charlen_t check_len) | |
df7cc9b5 | 1716 | { |
00660189 | 1717 | gfc_char_t *s; |
6b271a2e | 1718 | gfc_charlen_t slen; |
df7cc9b5 | 1719 | |
834e9dbb SK |
1720 | if (expr->ts.type != BT_CHARACTER) |
1721 | return; | |
63af1586 | 1722 | |
b441ae1d SK |
1723 | if (expr->expr_type != EXPR_CONSTANT) |
1724 | { | |
1725 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1726 | return; | |
1727 | } | |
df7cc9b5 FW |
1728 | |
1729 | slen = expr->value.character.length; | |
1730 | if (len != slen) | |
1731 | { | |
00660189 FXC |
1732 | s = gfc_get_wide_string (len + 1); |
1733 | memcpy (s, expr->value.character.string, | |
1734 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1735 | if (len > slen) |
00660189 | 1736 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1737 | |
a96c39ea | 1738 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1739 | gfc_warning_now (OPT_Wcharacter_truncation, |
1740 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1741 | "(%ld/%ld)", &expr->where, |
1742 | (long) slen, (long) len); | |
2220652d PT |
1743 | |
1744 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1745 | initializers. */ | |
d2848082 DK |
1746 | if (check_len != -1 && slen != check_len |
1747 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1748 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1749 | "at %L must have the same length (%ld/%ld)", |
1750 | &expr->where, (long) slen, | |
1751 | (long) check_len); | |
2220652d | 1752 | |
150675a8 | 1753 | s[len] = '\0'; |
cede9502 | 1754 | free (expr->value.character.string); |
df7cc9b5 FW |
1755 | expr->value.character.string = s; |
1756 | expr->value.character.length = len; | |
1757 | } | |
1758 | } | |
6de9cd9a | 1759 | |
25d8f0a2 | 1760 | |
d51347f9 | 1761 | /* Function to create and update the enumerator history |
25d8f0a2 | 1762 | using the information passed as arguments. |
d51347f9 TB |
1763 | Pointer "max_enum" is also updated, to point to |
1764 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1765 | |
1766 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1767 | INIT points to its enumerator value. */ |
25d8f0a2 | 1768 | |
d51347f9 | 1769 | static void |
636dff67 | 1770 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1771 | { |
1772 | enumerator_history *new_enum_history; | |
1773 | gcc_assert (sym != NULL && init != NULL); | |
1774 | ||
ece3f663 | 1775 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1776 | |
1777 | new_enum_history->sym = sym; | |
1778 | new_enum_history->initializer = init; | |
1779 | new_enum_history->next = NULL; | |
1780 | ||
1781 | if (enum_history == NULL) | |
1782 | { | |
1783 | enum_history = new_enum_history; | |
1784 | max_enum = enum_history; | |
1785 | } | |
1786 | else | |
1787 | { | |
1788 | new_enum_history->next = enum_history; | |
1789 | enum_history = new_enum_history; | |
1790 | ||
d51347f9 | 1791 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1792 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1793 | max_enum = new_enum_history; |
25d8f0a2 TS |
1794 | } |
1795 | } | |
1796 | ||
1797 | ||
d51347f9 | 1798 | /* Function to free enum kind history. */ |
25d8f0a2 | 1799 | |
d51347f9 | 1800 | void |
636dff67 | 1801 | gfc_free_enum_history (void) |
25d8f0a2 | 1802 | { |
d51347f9 TB |
1803 | enumerator_history *current = enum_history; |
1804 | enumerator_history *next; | |
25d8f0a2 TS |
1805 | |
1806 | while (current != NULL) | |
1807 | { | |
1808 | next = current->next; | |
cede9502 | 1809 | free (current); |
25d8f0a2 TS |
1810 | current = next; |
1811 | } | |
1812 | max_enum = NULL; | |
1813 | enum_history = NULL; | |
1814 | } | |
1815 | ||
1816 | ||
6de9cd9a DN |
1817 | /* Function called by variable_decl() that adds an initialization |
1818 | expression to a symbol. */ | |
1819 | ||
524af0d6 | 1820 | static bool |
66e4ab31 | 1821 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1822 | { |
1823 | symbol_attribute attr; | |
1824 | gfc_symbol *sym; | |
1825 | gfc_expr *init; | |
1826 | ||
1827 | init = *initp; | |
08a6b8e0 | 1828 | if (find_special (name, &sym, false)) |
524af0d6 | 1829 | return false; |
6de9cd9a DN |
1830 | |
1831 | attr = sym->attr; | |
1832 | ||
1833 | /* If this symbol is confirming an implicit parameter type, | |
1834 | then an initialization expression is not allowed. */ | |
1835 | if (attr.flavor == FL_PARAMETER | |
1836 | && sym->value != NULL | |
1837 | && *initp != NULL) | |
1838 | { | |
c4100eae | 1839 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1840 | sym->name); |
524af0d6 | 1841 | return false; |
6de9cd9a DN |
1842 | } |
1843 | ||
1844 | if (init == NULL) | |
1845 | { | |
1846 | /* An initializer is required for PARAMETER declarations. */ | |
1847 | if (attr.flavor == FL_PARAMETER) | |
1848 | { | |
1849 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1850 | return false; |
6de9cd9a DN |
1851 | } |
1852 | } | |
1853 | else | |
1854 | { | |
1855 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1856 | initializer. */ |
6de9cd9a DN |
1857 | if (sym->attr.data) |
1858 | { | |
c4100eae | 1859 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1860 | "appears in a DATA statement", sym->name); |
524af0d6 | 1861 | return false; |
6de9cd9a DN |
1862 | } |
1863 | ||
75d17889 | 1864 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1865 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1866 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1867 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1868 | && !sym->attr.proc_pointer |
524af0d6 JB |
1869 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1870 | return false; | |
6de9cd9a | 1871 | |
bc21d315 | 1872 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1873 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1874 | { |
1875 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1876 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1877 | return false; | |
51b128a0 | 1878 | |
bc21d315 | 1879 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1880 | { |
f622221a | 1881 | gfc_charlen_t clen; |
66e4ab31 SK |
1882 | /* If there are multiple CHARACTER variables declared on the |
1883 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1884 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1885 | |
a99288e5 PT |
1886 | if (sym->attr.flavor == FL_PARAMETER) |
1887 | { | |
1888 | if (init->expr_type == EXPR_CONSTANT) | |
1889 | { | |
1890 | clen = init->value.character.length; | |
b7e75771 | 1891 | sym->ts.u.cl->length |
f622221a | 1892 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1893 | NULL, clen); |
a99288e5 PT |
1894 | } |
1895 | else if (init->expr_type == EXPR_ARRAY) | |
1896 | { | |
c004a341 | 1897 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1898 | { |
1899 | const gfc_expr *length = init->ts.u.cl->length; | |
1900 | if (length->expr_type != EXPR_CONSTANT) | |
1901 | { | |
1902 | gfc_error ("Cannot initialize parameter array " | |
1903 | "at %L " | |
1904 | "with variable length elements", | |
1905 | &sym->declared_at); | |
1906 | return false; | |
1907 | } | |
1908 | clen = mpz_get_si (length->value.integer); | |
1909 | } | |
dc0f176a SK |
1910 | else if (init->value.constructor) |
1911 | { | |
1912 | gfc_constructor *c; | |
70112e2a | 1913 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1914 | clen = c->expr->value.character.length; |
1915 | } | |
1916 | else | |
1917 | gcc_unreachable (); | |
b7e75771 | 1918 | sym->ts.u.cl->length |
f622221a | 1919 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1920 | NULL, clen); |
a99288e5 | 1921 | } |
bc21d315 JW |
1922 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1923 | sym->ts.u.cl->length = | |
1924 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1925 | } |
df7cc9b5 FW |
1926 | } |
1927 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1928 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1929 | { |
d30ecc9c SK |
1930 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1931 | return false; | |
1932 | ||
aeb8c028 JJ |
1933 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1934 | false); | |
1935 | /* resolve_charlen will complain later on if the length | |
1936 | is too large. Just skeep the initialization in that case. */ | |
1937 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1938 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1939 | { |
aeb8c028 JJ |
1940 | HOST_WIDE_INT len |
1941 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1942 | ||
1943 | if (init->expr_type == EXPR_CONSTANT) | |
1944 | gfc_set_constant_character_len (len, init, -1); | |
1945 | else if (init->expr_type == EXPR_ARRAY) | |
1946 | { | |
1947 | gfc_constructor *c; | |
b7e75771 | 1948 | |
aeb8c028 JJ |
1949 | /* Build a new charlen to prevent simplification from |
1950 | deleting the length before it is resolved. */ | |
1951 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1952 | init->ts.u.cl->length | |
1953 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 1954 | |
aeb8c028 JJ |
1955 | for (c = gfc_constructor_first (init->value.constructor); |
1956 | c; c = gfc_constructor_next (c)) | |
1957 | gfc_set_constant_character_len (len, c->expr, -1); | |
1958 | } | |
df7cc9b5 FW |
1959 | } |
1960 | } | |
1961 | } | |
1962 | ||
f5ca06e6 DK |
1963 | /* If sym is implied-shape, set its upper bounds from init. */ |
1964 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1965 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1966 | { | |
1967 | int dim; | |
1968 | ||
1969 | if (init->rank == 0) | |
1970 | { | |
1971 | gfc_error ("Can't initialize implied-shape array at %L" | |
1972 | " with scalar", &sym->declared_at); | |
524af0d6 | 1973 | return false; |
f5ca06e6 | 1974 | } |
f5ca06e6 DK |
1975 | |
1976 | /* Shape should be present, we get an initialization expression. */ | |
1977 | gcc_assert (init->shape); | |
1978 | ||
1979 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1980 | { | |
1981 | int k; | |
cdffe788 | 1982 | gfc_expr *e, *lower; |
f5acf0f2 | 1983 | |
f5ca06e6 | 1984 | lower = sym->as->lower[dim]; |
cdffe788 | 1985 | |
70112e2a | 1986 | /* If the lower bound is an array element from another |
cdffe788 SK |
1987 | parameterized array, then it is marked with EXPR_VARIABLE and |
1988 | is an initialization expression. Try to reduce it. */ | |
1989 | if (lower->expr_type == EXPR_VARIABLE) | |
1990 | gfc_reduce_init_expr (lower); | |
1991 | ||
1992 | if (lower->expr_type == EXPR_CONSTANT) | |
1993 | { | |
1994 | /* All dimensions must be without upper bound. */ | |
1995 | gcc_assert (!sym->as->upper[dim]); | |
1996 | ||
1997 | k = lower->ts.kind; | |
1998 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1999 | mpz_add (e->value.integer, lower->value.integer, | |
2000 | init->shape[dim]); | |
2001 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
2002 | sym->as->upper[dim] = e; | |
2003 | } | |
2004 | else | |
f5ca06e6 DK |
2005 | { |
2006 | gfc_error ("Non-constant lower bound in implied-shape" | |
2007 | " declaration at %L", &lower->where); | |
524af0d6 | 2008 | return false; |
f5ca06e6 | 2009 | } |
f5ca06e6 DK |
2010 | } |
2011 | ||
2012 | sym->as->type = AS_EXPLICIT; | |
2013 | } | |
2014 | ||
a8b3b0b6 CR |
2015 | /* Need to check if the expression we initialized this |
2016 | to was one of the iso_c_binding named constants. If so, | |
2017 | and we're a parameter (constant), let it be iso_c. | |
2018 | For example: | |
2019 | integer(c_int), parameter :: my_int = c_int | |
2020 | integer(my_int) :: my_int_2 | |
2021 | If we mark my_int as iso_c (since we can see it's value | |
2022 | is equal to one of the named constants), then my_int_2 | |
2023 | will be considered C interoperable. */ | |
f6288c24 | 2024 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
2025 | { |
2026 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2027 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2028 | /* attr bits needed for module files. */ | |
2029 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2030 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2031 | if (init->ts.is_iso_c) | |
2032 | sym->ts.f90_type = init->ts.f90_type; | |
2033 | } | |
b7e75771 | 2034 | |
6de9cd9a DN |
2035 | /* Add initializer. Make sure we keep the ranks sane. */ |
2036 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
2037 | { |
2038 | mpz_t size; | |
2039 | gfc_expr *array; | |
a9b43781 PT |
2040 | int n; |
2041 | if (sym->attr.flavor == FL_PARAMETER | |
2042 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 2043 | && spec_size (sym->as, &size) |
a9b43781 PT |
2044 | && mpz_cmp_si (size, 0) > 0) |
2045 | { | |
b7e75771 JD |
2046 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2047 | &init->where); | |
a9b43781 | 2048 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
2049 | gfc_constructor_append_expr (&array->value.constructor, |
2050 | n == 0 | |
2051 | ? init | |
2052 | : gfc_copy_expr (init), | |
2053 | &init->where); | |
f5acf0f2 | 2054 | |
a9b43781 PT |
2055 | array->shape = gfc_get_shape (sym->as->rank); |
2056 | for (n = 0; n < sym->as->rank; n++) | |
2057 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2058 | ||
2059 | init = array; | |
2060 | mpz_clear (size); | |
2061 | } | |
2062 | init->rank = sym->as->rank; | |
2063 | } | |
6de9cd9a DN |
2064 | |
2065 | sym->value = init; | |
ef7236d2 DF |
2066 | if (sym->attr.save == SAVE_NONE) |
2067 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2068 | *initp = NULL; |
2069 | } | |
2070 | ||
524af0d6 | 2071 | return true; |
6de9cd9a DN |
2072 | } |
2073 | ||
2074 | ||
2075 | /* Function called by variable_decl() that adds a name to a structure | |
2076 | being built. */ | |
2077 | ||
524af0d6 | 2078 | static bool |
636dff67 SK |
2079 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2080 | gfc_array_spec **as) | |
6de9cd9a | 2081 | { |
f6288c24 | 2082 | gfc_state_data *s; |
6de9cd9a DN |
2083 | gfc_component *c; |
2084 | ||
619dd721 | 2085 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 2086 | constructing, it must have the pointer attribute. */ |
619dd721 | 2087 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 2088 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
2089 | && current_attr.pointer == 0) |
2090 | { | |
bf9f15ee PT |
2091 | if (current_attr.allocatable |
2092 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2093 | "must have the POINTER attribute")) | |
2094 | { | |
2095 | return false; | |
2096 | } | |
2097 | else if (current_attr.allocatable == 0) | |
2098 | { | |
9cbf8673 JW |
2099 | gfc_error ("Component at %C must have the POINTER attribute"); |
2100 | return false; | |
2101 | } | |
6de9cd9a | 2102 | } |
9cbf8673 JW |
2103 | |
2104 | /* F03:C437. */ | |
2105 | if (current_ts.type == BT_CLASS | |
2106 | && !(current_attr.pointer || current_attr.allocatable)) | |
2107 | { | |
2108 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2109 | "or pointer", name); | |
2110 | return false; | |
bf9f15ee | 2111 | } |
6de9cd9a | 2112 | |
636dff67 | 2113 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
2114 | { |
2115 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2116 | { | |
2117 | gfc_error ("Array component of structure at %C must have explicit " | |
2118 | "or deferred shape"); | |
524af0d6 | 2119 | return false; |
6de9cd9a DN |
2120 | } |
2121 | } | |
2122 | ||
f6288c24 FR |
2123 | /* If we are in a nested union/map definition, gfc_add_component will not |
2124 | properly find repeated components because: | |
6442a6f4 | 2125 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
2126 | and maps are implicity chained so nested components may conflict. |
2127 | (ii) Unions and maps are not linked as components of their parent | |
2128 | structures until after they are parsed. | |
2129 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2130 | we search each block directly from the parse stack until we find the top | |
2131 | level structure. */ | |
2132 | ||
2133 | s = gfc_state_stack; | |
2134 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2135 | { | |
2136 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2137 | { | |
2138 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2139 | if (c != NULL) | |
2140 | { | |
2f029c08 | 2141 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
2142 | name, &c->loc); |
2143 | return false; | |
2144 | } | |
2145 | /* Break after we've searched the entire chain. */ | |
2146 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2147 | break; | |
2148 | s = s->previous; | |
2149 | } | |
2150 | } | |
2151 | ||
524af0d6 JB |
2152 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2153 | return false; | |
6de9cd9a DN |
2154 | |
2155 | c->ts = current_ts; | |
bc21d315 JW |
2156 | if (c->ts.type == BT_CHARACTER) |
2157 | c->ts.u.cl = cl; | |
5bab4c96 PT |
2158 | |
2159 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2160 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2161 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2162 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2163 | ||
d4b7d0f0 | 2164 | c->attr = current_attr; |
6de9cd9a DN |
2165 | |
2166 | c->initializer = *init; | |
2167 | *init = NULL; | |
2168 | ||
2169 | c->as = *as; | |
2170 | if (c->as != NULL) | |
be59db2d TB |
2171 | { |
2172 | if (c->as->corank) | |
2173 | c->attr.codimension = 1; | |
2174 | if (c->as->rank) | |
2175 | c->attr.dimension = 1; | |
2176 | } | |
6de9cd9a DN |
2177 | *as = NULL; |
2178 | ||
7fc61626 | 2179 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2180 | |
6de9cd9a | 2181 | /* Check array components. */ |
d4b7d0f0 | 2182 | if (!c->attr.dimension) |
2e23972e | 2183 | goto scalar; |
6de9cd9a | 2184 | |
d4b7d0f0 | 2185 | if (c->attr.pointer) |
6de9cd9a DN |
2186 | { |
2187 | if (c->as->type != AS_DEFERRED) | |
2188 | { | |
5046aff5 PT |
2189 | gfc_error ("Pointer array component of structure at %C must have a " |
2190 | "deferred shape"); | |
a4f15a7d | 2191 | return false; |
5046aff5 PT |
2192 | } |
2193 | } | |
d4b7d0f0 | 2194 | else if (c->attr.allocatable) |
5046aff5 PT |
2195 | { |
2196 | if (c->as->type != AS_DEFERRED) | |
2197 | { | |
2198 | gfc_error ("Allocatable component of structure at %C must have a " | |
2199 | "deferred shape"); | |
a4f15a7d | 2200 | return false; |
6de9cd9a DN |
2201 | } |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | if (c->as->type != AS_EXPLICIT) | |
2206 | { | |
636dff67 SK |
2207 | gfc_error ("Array component of structure at %C must have an " |
2208 | "explicit shape"); | |
a4f15a7d | 2209 | return false; |
6de9cd9a DN |
2210 | } |
2211 | } | |
2212 | ||
2e23972e JW |
2213 | scalar: |
2214 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2215 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2216 | |
5bab4c96 PT |
2217 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2218 | { | |
2219 | gfc_symbol *sym; | |
2220 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2221 | 0, &sym); | |
2222 | if (sym == NULL) | |
2223 | { | |
2224 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2225 | "in the type parameter name list at %L", | |
2226 | c->name, &gfc_current_block ()->declared_at); | |
2227 | return false; | |
2228 | } | |
2229 | sym->ts = c->ts; | |
2230 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2231 | sym->attr.pdt_len = c->attr.pdt_len; | |
2232 | if (c->initializer) | |
2233 | sym->value = gfc_copy_expr (c->initializer); | |
2234 | sym->attr.flavor = FL_VARIABLE; | |
2235 | } | |
2236 | ||
2237 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2238 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2239 | && decl_type_param_list) | |
2240 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2241 | ||
a4f15a7d | 2242 | return true; |
6de9cd9a DN |
2243 | } |
2244 | ||
2245 | ||
2246 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2247 | ||
2248 | match | |
636dff67 | 2249 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2250 | { |
2251 | gfc_symbol *sym; | |
576f6da6 | 2252 | match m, m2 = MATCH_NO; |
6de9cd9a | 2253 | |
576f6da6 TB |
2254 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2255 | return MATCH_ERROR; | |
2256 | ||
2257 | if (m == MATCH_NO) | |
2258 | { | |
2259 | locus old_loc; | |
2260 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2261 | ||
94241120 | 2262 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2263 | return m2; |
2264 | ||
2265 | old_loc = gfc_current_locus; | |
2266 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2267 | return MATCH_ERROR; | |
2268 | if (m2 != MATCH_YES | |
2269 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2270 | return MATCH_ERROR; | |
2271 | if (m2 == MATCH_NO) | |
2272 | { | |
2273 | gfc_current_locus = old_loc; | |
2274 | return MATCH_NO; | |
2275 | } | |
2276 | } | |
6de9cd9a DN |
2277 | |
2278 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2279 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2280 | { | |
2281 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2282 | return MATCH_ERROR; | |
2283 | } | |
2284 | ||
2285 | gfc_intrinsic_symbol (sym); | |
2286 | ||
2287 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2288 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2289 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2290 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2291 | return MATCH_ERROR; |
2292 | ||
b7e75771 | 2293 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2294 | |
576f6da6 TB |
2295 | /* Invalid per F2008, C512. */ |
2296 | if (m2 == MATCH_YES) | |
2297 | { | |
2298 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2299 | return MATCH_ERROR; | |
2300 | } | |
2301 | ||
6de9cd9a DN |
2302 | return MATCH_YES; |
2303 | } | |
2304 | ||
2305 | ||
80f95228 JW |
2306 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2307 | ||
2308 | static match | |
2309 | match_pointer_init (gfc_expr **init, int procptr) | |
2310 | { | |
2311 | match m; | |
2312 | ||
f6288c24 | 2313 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2314 | { |
2315 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2316 | "a PURE procedure"); | |
2317 | return MATCH_ERROR; | |
2318 | } | |
ccd7751b | 2319 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2320 | |
eea58adb | 2321 | /* Match NULL() initialization. */ |
80f95228 JW |
2322 | m = gfc_match_null (init); |
2323 | if (m != MATCH_NO) | |
2324 | return m; | |
2325 | ||
2326 | /* Match non-NULL initialization. */ | |
837c4b78 | 2327 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2328 | gfc_matching_procptr_assignment = procptr; |
2329 | m = gfc_match_rvalue (init); | |
837c4b78 | 2330 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2331 | gfc_matching_procptr_assignment = 0; |
2332 | if (m == MATCH_ERROR) | |
2333 | return MATCH_ERROR; | |
2334 | else if (m == MATCH_NO) | |
2335 | { | |
2336 | gfc_error ("Error in pointer initialization at %C"); | |
2337 | return MATCH_ERROR; | |
2338 | } | |
2339 | ||
dc9a54fa JW |
2340 | if (!procptr && !gfc_resolve_expr (*init)) |
2341 | return MATCH_ERROR; | |
f5acf0f2 | 2342 | |
524af0d6 JB |
2343 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2344 | "initialization at %C")) | |
80f95228 JW |
2345 | return MATCH_ERROR; |
2346 | ||
2347 | return MATCH_YES; | |
2348 | } | |
2349 | ||
2350 | ||
524af0d6 | 2351 | static bool |
bb9de0c4 JW |
2352 | check_function_name (char *name) |
2353 | { | |
2354 | /* In functions that have a RESULT variable defined, the function name always | |
2355 | refers to function calls. Therefore, the name is not allowed to appear in | |
2356 | specification statements. When checking this, be careful about | |
2357 | 'hidden' procedure pointer results ('ppr@'). */ | |
2358 | ||
2359 | if (gfc_current_state () == COMP_FUNCTION) | |
2360 | { | |
2361 | gfc_symbol *block = gfc_current_block (); | |
2362 | if (block && block->result && block->result != block | |
2363 | && strcmp (block->result->name, "ppr@") != 0 | |
2364 | && strcmp (block->name, name) == 0) | |
2365 | { | |
ba77f7ba SK |
2366 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2367 | "from appearing in a specification statement", | |
2368 | block->result->name, &block->result->declared_at, name); | |
524af0d6 | 2369 | return false; |
bb9de0c4 JW |
2370 | } |
2371 | } | |
2372 | ||
524af0d6 | 2373 | return true; |
bb9de0c4 JW |
2374 | } |
2375 | ||
2376 | ||
6de9cd9a DN |
2377 | /* Match a variable name with an optional initializer. When this |
2378 | subroutine is called, a variable is expected to be parsed next. | |
2379 | Depending on what is happening at the moment, updates either the | |
2380 | symbol table or the current interface. */ | |
2381 | ||
2382 | static match | |
949d5b72 | 2383 | variable_decl (int elem) |
6de9cd9a DN |
2384 | { |
2385 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2386 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2387 | gfc_expr *initializer, *char_len; |
2388 | gfc_array_spec *as; | |
83d890b9 | 2389 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2390 | gfc_charlen *cl; |
e69afb29 | 2391 | bool cl_deferred; |
6de9cd9a DN |
2392 | locus var_locus; |
2393 | match m; | |
524af0d6 | 2394 | bool t; |
83d890b9 | 2395 | gfc_symbol *sym; |
6de9cd9a DN |
2396 | |
2397 | initializer = NULL; | |
2398 | as = NULL; | |
83d890b9 | 2399 | cp_as = NULL; |
6de9cd9a DN |
2400 | |
2401 | /* When we get here, we've just matched a list of attributes and | |
2402 | maybe a type and a double colon. The next thing we expect to see | |
2403 | is the name of the symbol. */ | |
6f855a26 FR |
2404 | |
2405 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2406 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2407 | m = MATCH_NO; | |
2408 | gfc_gobble_whitespace (); | |
2409 | if (gfc_peek_ascii_char () == '%') | |
2410 | { | |
2411 | gfc_next_ascii_char (); | |
2412 | m = gfc_match ("fill"); | |
2413 | } | |
2414 | ||
6de9cd9a | 2415 | if (m != MATCH_YES) |
6f855a26 FR |
2416 | { |
2417 | m = gfc_match_name (name); | |
2418 | if (m != MATCH_YES) | |
2419 | goto cleanup; | |
2420 | } | |
2421 | ||
2422 | else | |
2423 | { | |
2424 | m = MATCH_ERROR; | |
2425 | if (gfc_current_state () != COMP_STRUCTURE) | |
2426 | { | |
2427 | if (flag_dec_structure) | |
2428 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2429 | else | |
2430 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2431 | "%<-fdec-structure%>", "%FILL"); | |
2432 | goto cleanup; | |
2433 | } | |
2434 | ||
2435 | if (attr_seen) | |
2436 | { | |
2437 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2438 | goto cleanup; | |
2439 | } | |
2440 | ||
2441 | /* %FILL components are given invalid fortran names. */ | |
2442 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2443 | m = MATCH_YES; | |
2444 | } | |
6de9cd9a | 2445 | |
63645982 | 2446 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2447 | |
2448 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2449 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2450 | if (m == MATCH_ERROR) |
6de9cd9a | 2451 | goto cleanup; |
25d8f0a2 | 2452 | |
6de9cd9a DN |
2453 | if (m == MATCH_NO) |
2454 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2455 | else if (current_as |
524af0d6 | 2456 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2457 | { |
2458 | m = MATCH_ERROR; | |
2459 | goto cleanup; | |
2460 | } | |
6de9cd9a | 2461 | |
c61819ff | 2462 | if (flag_cray_pointer) |
11126dc0 AL |
2463 | cp_as = gfc_copy_array_spec (as); |
2464 | ||
f5ca06e6 DK |
2465 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2466 | determine (and check) whether it can be implied-shape. If it | |
67914693 | 2467 | was parsed as assumed-size, change it because PARAMETERs cannot |
09ef33c1 SK |
2468 | be assumed-size. |
2469 | ||
2470 | An explicit-shape-array cannot appear under several conditions. | |
2471 | That check is done here as well. */ | |
f5ca06e6 DK |
2472 | if (as) |
2473 | { | |
2474 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2475 | { | |
2476 | m = MATCH_ERROR; | |
c4100eae | 2477 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2478 | name, &var_locus); |
2479 | goto cleanup; | |
2480 | } | |
2481 | ||
2482 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2483 | && current_attr.flavor == FL_PARAMETER) | |
2484 | as->type = AS_IMPLIED_SHAPE; | |
2485 | ||
2486 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2487 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2488 | &var_locus)) |
f5ca06e6 DK |
2489 | { |
2490 | m = MATCH_ERROR; | |
2491 | goto cleanup; | |
2492 | } | |
09ef33c1 SK |
2493 | |
2494 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2495 | constant expressions shall appear only in a subprogram, derived | |
2496 | type definition, BLOCK construct, or interface body. */ | |
2497 | if (as->type == AS_EXPLICIT | |
2498 | && gfc_current_state () != COMP_BLOCK | |
2499 | && gfc_current_state () != COMP_DERIVED | |
2500 | && gfc_current_state () != COMP_FUNCTION | |
2501 | && gfc_current_state () != COMP_INTERFACE | |
2502 | && gfc_current_state () != COMP_SUBROUTINE) | |
2503 | { | |
2504 | gfc_expr *e; | |
2505 | bool not_constant = false; | |
2506 | ||
2507 | for (int i = 0; i < as->rank; i++) | |
2508 | { | |
2509 | e = gfc_copy_expr (as->lower[i]); | |
2510 | gfc_resolve_expr (e); | |
2511 | gfc_simplify_expr (e, 0); | |
2512 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2513 | { | |
2514 | not_constant = true; | |
2515 | break; | |
2516 | } | |
2517 | gfc_free_expr (e); | |
2518 | ||
2519 | e = gfc_copy_expr (as->upper[i]); | |
2520 | gfc_resolve_expr (e); | |
2521 | gfc_simplify_expr (e, 0); | |
2522 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2523 | { | |
2524 | not_constant = true; | |
2525 | break; | |
2526 | } | |
2527 | gfc_free_expr (e); | |
2528 | } | |
2529 | ||
2530 | if (not_constant) | |
5b9a3332 | 2531 | { |
09ef33c1 SK |
2532 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2533 | m = MATCH_ERROR; | |
2534 | goto cleanup; | |
2535 | } | |
2536 | } | |
078c5aff TK |
2537 | if (as->type == AS_EXPLICIT) |
2538 | { | |
2539 | for (int i = 0; i < as->rank; i++) | |
2540 | { | |
2541 | gfc_expr *e, *n; | |
2542 | e = as->lower[i]; | |
2543 | if (e->expr_type != EXPR_CONSTANT) | |
2544 | { | |
2545 | n = gfc_copy_expr (e); | |
2546 | gfc_simplify_expr (n, 1); | |
2547 | if (n->expr_type == EXPR_CONSTANT) | |
2548 | gfc_replace_expr (e, n); | |
2549 | else | |
2550 | gfc_free_expr (n); | |
2551 | } | |
2552 | e = as->upper[i]; | |
2553 | if (e->expr_type != EXPR_CONSTANT) | |
2554 | { | |
2555 | n = gfc_copy_expr (e); | |
2556 | gfc_simplify_expr (n, 1); | |
2557 | if (n->expr_type == EXPR_CONSTANT) | |
2558 | gfc_replace_expr (e, n); | |
2559 | else | |
2560 | gfc_free_expr (n); | |
2561 | } | |
2562 | } | |
2563 | } | |
f5ca06e6 DK |
2564 | } |
2565 | ||
6de9cd9a DN |
2566 | char_len = NULL; |
2567 | cl = NULL; | |
e69afb29 | 2568 | cl_deferred = false; |
6de9cd9a DN |
2569 | |
2570 | if (current_ts.type == BT_CHARACTER) | |
2571 | { | |
2767f2cc | 2572 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2573 | { |
2574 | case MATCH_YES: | |
b76e28c6 | 2575 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2576 | |
2577 | cl->length = char_len; | |
2578 | break; | |
2579 | ||
949d5b72 | 2580 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2581 | element. Also copy assumed lengths. */ |
6de9cd9a | 2582 | case MATCH_NO: |
9b21a380 | 2583 | if (elem > 1 |
bc21d315 JW |
2584 | && (current_ts.u.cl->length == NULL |
2585 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2586 | { |
b76e28c6 | 2587 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2588 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2589 | } |
2590 | else | |
bc21d315 | 2591 | cl = current_ts.u.cl; |
949d5b72 | 2592 | |
e69afb29 SK |
2593 | cl_deferred = current_ts.deferred; |
2594 | ||
6de9cd9a DN |
2595 | break; |
2596 | ||
2597 | case MATCH_ERROR: | |
2598 | goto cleanup; | |
2599 | } | |
2600 | } | |
2601 | ||
4668d6f9 PT |
2602 | /* The dummy arguments and result of the abreviated form of MODULE |
2603 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2604 | if (gfc_current_ns->proc_name | |
2605 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2606 | { | |
2607 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2608 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2609 | { | |
2610 | m = MATCH_ERROR; | |
811582ec | 2611 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2612 | "in the corresponding interface for MODULE " |
811582ec | 2613 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2614 | gfc_current_ns->proc_name->name); |
2615 | goto cleanup; | |
2616 | } | |
2617 | } | |
2618 | ||
6f855a26 | 2619 | /* %FILL components may not have initializers. */ |
2eb3745a | 2620 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
6f855a26 FR |
2621 | { |
2622 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2623 | m = MATCH_ERROR; | |
2624 | goto cleanup; | |
2625 | } | |
2626 | ||
83d890b9 | 2627 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2628 | and this is not a component declaration, |
66e4ab31 | 2629 | then we want to set the type & bail out. */ |
f6288c24 | 2630 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2631 | { |
2632 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2633 | if (sym != NULL && sym->attr.cray_pointee) | |
2634 | { | |
83d890b9 | 2635 | m = MATCH_YES; |
5b9a3332 PT |
2636 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2637 | { | |
2638 | m = MATCH_ERROR; | |
2639 | goto cleanup; | |
2640 | } | |
f5acf0f2 | 2641 | |
83d890b9 AL |
2642 | /* Check to see if we have an array specification. */ |
2643 | if (cp_as != NULL) | |
2644 | { | |
2645 | if (sym->as != NULL) | |
2646 | { | |
e25a0da3 | 2647 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2648 | gfc_free_array_spec (cp_as); |
2649 | m = MATCH_ERROR; | |
2650 | goto cleanup; | |
2651 | } | |
2652 | else | |
2653 | { | |
524af0d6 | 2654 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2655 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2656 | |
83d890b9 | 2657 | /* Fix the array spec. */ |
d51347f9 | 2658 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2659 | if (m == MATCH_ERROR) |
2660 | goto cleanup; | |
2661 | } | |
d51347f9 | 2662 | } |
83d890b9 AL |
2663 | goto cleanup; |
2664 | } | |
2665 | else | |
2666 | { | |
2667 | gfc_free_array_spec (cp_as); | |
2668 | } | |
2669 | } | |
d51347f9 | 2670 | |
3070bab4 JW |
2671 | /* Procedure pointer as function result. */ |
2672 | if (gfc_current_state () == COMP_FUNCTION | |
2673 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2674 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2675 | strcpy (name, "ppr@"); | |
2676 | ||
2677 | if (gfc_current_state () == COMP_FUNCTION | |
2678 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2679 | && gfc_current_block ()->result | |
2680 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2681 | strcpy (name, "ppr@"); | |
d51347f9 | 2682 | |
6de9cd9a DN |
2683 | /* OK, we've successfully matched the declaration. Now put the |
2684 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2685 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2686 | perfectly legal: |
2687 | ||
2688 | integer, parameter :: i = huge(i) | |
2689 | ||
2690 | This is only true for parameters or variables of a basic type. | |
2691 | For components of derived types, it is not true, so we don't | |
2692 | create a symbol for those yet. If we fail to create the symbol, | |
2693 | bail out. */ | |
f6288c24 | 2694 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2695 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2696 | { |
72af9f0b PT |
2697 | m = MATCH_ERROR; |
2698 | goto cleanup; | |
2699 | } | |
2700 | ||
524af0d6 | 2701 | if (!check_function_name (name)) |
6de9cd9a | 2702 | { |
6de9cd9a DN |
2703 | m = MATCH_ERROR; |
2704 | goto cleanup; | |
2705 | } | |
2706 | ||
294fbfc8 TS |
2707 | /* We allow old-style initializations of the form |
2708 | integer i /2/, j(4) /3*3, 1/ | |
2709 | (if no colon has been seen). These are different from data | |
2710 | statements in that initializers are only allowed to apply to the | |
2711 | variable immediately preceding, i.e. | |
2712 | integer i, j /1, 2/ | |
2713 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2714 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2715 | |
2716 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2717 | { | |
524af0d6 JB |
2718 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2719 | "initialization at %C")) | |
294fbfc8 | 2720 | return MATCH_ERROR; |
f6288c24 FR |
2721 | |
2722 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2723 | but not components of derived types. */ | |
b18f1efc JJ |
2724 | else if (gfc_current_state () == COMP_DERIVED) |
2725 | { | |
2726 | gfc_error ("Invalid old style initialization for derived type " | |
2727 | "component at %C"); | |
2728 | m = MATCH_ERROR; | |
2729 | goto cleanup; | |
2730 | } | |
f5acf0f2 | 2731 | |
f6288c24 FR |
2732 | /* For structure components, read the initializer as a special |
2733 | expression and let the rest of this function apply the initializer | |
2734 | as usual. */ | |
2735 | else if (gfc_comp_struct (gfc_current_state ())) | |
2736 | { | |
2737 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2738 | if (m == MATCH_NO) | |
2739 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2740 | name); | |
2741 | if (m != MATCH_YES) | |
2742 | goto cleanup; | |
2743 | } | |
2744 | ||
2745 | /* Otherwise we treat the old style initialization just like a | |
2746 | DATA declaration for the current variable. */ | |
2747 | else | |
2748 | return match_old_style_init (name); | |
294fbfc8 TS |
2749 | } |
2750 | ||
6de9cd9a DN |
2751 | /* The double colon must be present in order to have initializers. |
2752 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2753 | if (colon_seen) | |
2754 | { | |
2755 | if (gfc_match (" =>") == MATCH_YES) | |
2756 | { | |
6de9cd9a DN |
2757 | if (!current_attr.pointer) |
2758 | { | |
2759 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2760 | m = MATCH_ERROR; | |
2761 | goto cleanup; | |
2762 | } | |
2763 | ||
80f95228 | 2764 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2765 | if (m != MATCH_YES) |
2766 | goto cleanup; | |
6de9cd9a DN |
2767 | } |
2768 | else if (gfc_match_char ('=') == MATCH_YES) | |
2769 | { | |
2770 | if (current_attr.pointer) | |
2771 | { | |
a4d9b221 TB |
2772 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2773 | "not %<=%>"); | |
6de9cd9a DN |
2774 | m = MATCH_ERROR; |
2775 | goto cleanup; | |
2776 | } | |
2777 | ||
2778 | m = gfc_match_init_expr (&initializer); | |
2779 | if (m == MATCH_NO) | |
2780 | { | |
2781 | gfc_error ("Expected an initialization expression at %C"); | |
2782 | m = MATCH_ERROR; | |
2783 | } | |
2784 | ||
ade20620 | 2785 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2786 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2787 | { |
636dff67 SK |
2788 | gfc_error ("Initialization of variable at %C is not allowed in " |
2789 | "a PURE procedure"); | |
6de9cd9a DN |
2790 | m = MATCH_ERROR; |
2791 | } | |
2792 | ||
ccd7751b | 2793 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2794 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2795 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2796 | ||
6de9cd9a DN |
2797 | if (m != MATCH_YES) |
2798 | goto cleanup; | |
2799 | } | |
cb44ab82 VL |
2800 | } |
2801 | ||
5046aff5 | 2802 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2803 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2804 | { |
636dff67 SK |
2805 | gfc_error ("Initialization of allocatable component at %C is not " |
2806 | "allowed"); | |
5046aff5 PT |
2807 | m = MATCH_ERROR; |
2808 | goto cleanup; | |
2809 | } | |
2810 | ||
18a4e7e3 PT |
2811 | if (gfc_current_state () == COMP_DERIVED |
2812 | && gfc_current_block ()->attr.pdt_template) | |
2813 | { | |
2814 | gfc_symbol *param; | |
2815 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2816 | 0, ¶m); | |
2817 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2818 | { | |
2819 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2820 | "not appear in the type parameter list at %L", | |
2821 | &gfc_current_block ()->declared_at); | |
2822 | m = MATCH_ERROR; | |
2823 | goto cleanup; | |
2824 | } | |
2825 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2826 | { | |
2827 | gfc_error ("The component at %C that appears in the type parameter " | |
2828 | "list at %L has neither the KIND nor LEN attribute", | |
2829 | &gfc_current_block ()->declared_at); | |
2830 | m = MATCH_ERROR; | |
2831 | goto cleanup; | |
2832 | } | |
2833 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2834 | { | |
2835 | gfc_error ("The component at %C which is a type parameter must be " | |
2836 | "a scalar"); | |
2837 | m = MATCH_ERROR; | |
2838 | goto cleanup; | |
2839 | } | |
2840 | else if (param && initializer) | |
2841 | param->value = gfc_copy_expr (initializer); | |
2842 | } | |
2843 | ||
e310b381 | 2844 | /* Before adding a possible initilizer, do a simple check for compatibility |
26ca4e05 | 2845 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
e310b381 SK |
2846 | good thing. */ |
2847 | if (current_ts.type == BT_DERIVED && initializer | |
2848 | && (gfc_numeric_ts (&initializer->ts) | |
2849 | || initializer->ts.type == BT_LOGICAL | |
2850 | || initializer->ts.type == BT_CHARACTER)) | |
2851 | { | |
26ca4e05 | 2852 | gfc_error ("Incompatible initialization between a derived type " |
e310b381 SK |
2853 | "entity and an entity with %qs type at %C", |
2854 | gfc_typename (&initializer->ts)); | |
2855 | m = MATCH_ERROR; | |
2856 | goto cleanup; | |
2857 | } | |
2858 | ||
2859 | ||
54b4ba60 | 2860 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2861 | NULL here, because we sometimes also need to check if a |
2862 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2863 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2864 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2865 | else | |
54b4ba60 | 2866 | { |
5046aff5 | 2867 | if (current_ts.type == BT_DERIVED |
636dff67 | 2868 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2869 | initializer = gfc_default_initializer (¤t_ts); |
2870 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2871 | |
2872 | /* If we match a nested structure definition we expect to see the | |
2873 | * body even if the variable declarations blow up, so we need to keep | |
2874 | * the structure declaration around. */ | |
2875 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2876 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2877 | } |
6de9cd9a | 2878 | |
524af0d6 | 2879 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2880 | |
2881 | cleanup: | |
2882 | /* Free stuff up and return. */ | |
2883 | gfc_free_expr (initializer); | |
2884 | gfc_free_array_spec (as); | |
2885 | ||
2886 | return m; | |
2887 | } | |
2888 | ||
2889 | ||
b2b81a3f BM |
2890 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2891 | This assumes that the byte size is equal to the kind number for | |
2892 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2893 | |
2894 | match | |
636dff67 | 2895 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2896 | { |
2897 | match m; | |
5cf54585 | 2898 | int original_kind; |
6de9cd9a DN |
2899 | |
2900 | if (gfc_match_char ('*') != MATCH_YES) | |
2901 | return MATCH_NO; | |
2902 | ||
5cf54585 | 2903 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2904 | if (m != MATCH_YES) |
2905 | return MATCH_ERROR; | |
2906 | ||
e45b3c75 ES |
2907 | original_kind = ts->kind; |
2908 | ||
6de9cd9a | 2909 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2910 | if (ts->type == BT_COMPLEX) |
2911 | { | |
2912 | if (ts->kind % 2) | |
636dff67 SK |
2913 | { |
2914 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2915 | gfc_basic_typename (ts->type), original_kind); | |
2916 | return MATCH_ERROR; | |
2917 | } | |
e45b3c75 | 2918 | ts->kind /= 2; |
f4347334 ZG |
2919 | |
2920 | } | |
2921 | ||
203c7ebf | 2922 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2923 | ts->kind = 8; |
2924 | ||
2925 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2926 | { | |
2927 | if (ts->kind == 4) | |
2928 | { | |
203c7ebf | 2929 | if (flag_real4_kind == 8) |
f4347334 | 2930 | ts->kind = 8; |
203c7ebf | 2931 | if (flag_real4_kind == 10) |
f4347334 | 2932 | ts->kind = 10; |
203c7ebf | 2933 | if (flag_real4_kind == 16) |
f4347334 ZG |
2934 | ts->kind = 16; |
2935 | } | |
2936 | ||
2937 | if (ts->kind == 8) | |
2938 | { | |
203c7ebf | 2939 | if (flag_real8_kind == 4) |
f4347334 | 2940 | ts->kind = 4; |
203c7ebf | 2941 | if (flag_real8_kind == 10) |
f4347334 | 2942 | ts->kind = 10; |
203c7ebf | 2943 | if (flag_real8_kind == 16) |
f4347334 ZG |
2944 | ts->kind = 16; |
2945 | } | |
e45b3c75 | 2946 | } |
6de9cd9a | 2947 | |
e7a2d5fb | 2948 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2949 | { |
e45b3c75 | 2950 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2951 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2952 | return MATCH_ERROR; |
2953 | } | |
2954 | ||
70112e2a PT |
2955 | if (!gfc_notify_std (GFC_STD_GNU, |
2956 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2957 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2958 | return MATCH_ERROR; |
2959 | ||
6de9cd9a DN |
2960 | return MATCH_YES; |
2961 | } | |
2962 | ||
2963 | ||
2964 | /* Match a kind specification. Since kinds are generally optional, we | |
2965 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2966 | string is found, then we know we have an error. */ | |
2967 | ||
2968 | match | |
e2d29968 | 2969 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2970 | { |
e2d29968 | 2971 | locus where, loc; |
6de9cd9a DN |
2972 | gfc_expr *e; |
2973 | match m, n; | |
96ee3a4a | 2974 | char c; |
6de9cd9a DN |
2975 | |
2976 | m = MATCH_NO; | |
e2d29968 | 2977 | n = MATCH_YES; |
6de9cd9a | 2978 | e = NULL; |
5bab4c96 | 2979 | saved_kind_expr = NULL; |
6de9cd9a | 2980 | |
e2d29968 PT |
2981 | where = loc = gfc_current_locus; |
2982 | ||
2983 | if (kind_expr_only) | |
2984 | goto kind_expr; | |
6de9cd9a DN |
2985 | |
2986 | if (gfc_match_char ('(') == MATCH_NO) | |
2987 | return MATCH_NO; | |
2988 | ||
2989 | /* Also gobbles optional text. */ | |
2990 | if (gfc_match (" kind = ") == MATCH_YES) | |
2991 | m = MATCH_ERROR; | |
2992 | ||
e2d29968 PT |
2993 | loc = gfc_current_locus; |
2994 | ||
2995 | kind_expr: | |
5bab4c96 | 2996 | |
6de9cd9a | 2997 | n = gfc_match_init_expr (&e); |
e2d29968 | 2998 | |
5bab4c96 PT |
2999 | if (gfc_derived_parameter_expr (e)) |
3000 | { | |
3001 | ts->kind = 0; | |
3002 | saved_kind_expr = gfc_copy_expr (e); | |
3003 | goto close_brackets; | |
3004 | } | |
3005 | ||
6de9cd9a | 3006 | if (n != MATCH_YES) |
e2d29968 | 3007 | { |
1c8bcdf7 | 3008 | if (gfc_matching_function) |
e2d29968 | 3009 | { |
f5acf0f2 | 3010 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
3011 | imported parameters and try again after the specification |
3012 | expressions..... */ | |
e2d29968 PT |
3013 | if (gfc_match_char (')') != MATCH_YES) |
3014 | { | |
3015 | gfc_error ("Missing right parenthesis at %C"); | |
3016 | m = MATCH_ERROR; | |
3017 | goto no_match; | |
3018 | } | |
3019 | ||
3020 | gfc_free_expr (e); | |
e2d29968 PT |
3021 | gfc_undo_symbols (); |
3022 | return MATCH_YES; | |
3023 | } | |
3024 | else | |
3025 | { | |
3026 | /* ....or else, the match is real. */ | |
3027 | if (n == MATCH_NO) | |
3028 | gfc_error ("Expected initialization expression at %C"); | |
3029 | if (n != MATCH_YES) | |
3030 | return MATCH_ERROR; | |
3031 | } | |
3032 | } | |
6de9cd9a DN |
3033 | |
3034 | if (e->rank != 0) | |
3035 | { | |
3036 | gfc_error ("Expected scalar initialization expression at %C"); | |
3037 | m = MATCH_ERROR; | |
3038 | goto no_match; | |
3039 | } | |
3040 | ||
51f03c6b | 3041 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 3042 | { |
6de9cd9a DN |
3043 | m = MATCH_ERROR; |
3044 | goto no_match; | |
3045 | } | |
3046 | ||
a8b3b0b6 CR |
3047 | /* Before throwing away the expression, let's see if we had a |
3048 | C interoperable kind (and store the fact). */ | |
3049 | if (e->ts.is_c_interop == 1) | |
3050 | { | |
eea58adb | 3051 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
3052 | of the named constants from iso_c_binding. */ |
3053 | ts->is_c_interop = e->ts.is_iso_c; | |
3054 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
3055 | if (e->symtree) |
3056 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 3057 | } |
f5acf0f2 | 3058 | |
6de9cd9a DN |
3059 | gfc_free_expr (e); |
3060 | e = NULL; | |
3061 | ||
a8b3b0b6 CR |
3062 | /* Ignore errors to this point, if we've gotten here. This means |
3063 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 3064 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
3065 | { |
3066 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3067 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
3068 | gfc_current_locus = where; |
3069 | return MATCH_ERROR; | |
6de9cd9a | 3070 | } |
96ee3a4a | 3071 | |
2ec855f1 TB |
3072 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3073 | if, e.g., c_double is used for COMPLEX as the standard | |
3074 | explicitly says that the kind type parameter for complex and real | |
3075 | variable is the same, i.e. c_float == c_float_complex. */ | |
3076 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3077 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3078 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 3079 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
3080 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3081 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 3082 | |
5bab4c96 PT |
3083 | close_brackets: |
3084 | ||
96ee3a4a | 3085 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
3086 | if ((c = gfc_next_ascii_char ()) != ')' |
3087 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 3088 | { |
96ee3a4a TB |
3089 | if (ts->type == BT_CHARACTER) |
3090 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3091 | else | |
3092 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 3093 | m = MATCH_ERROR; |
6de9cd9a | 3094 | } |
a8b3b0b6 CR |
3095 | else |
3096 | /* All tests passed. */ | |
3097 | m = MATCH_YES; | |
6de9cd9a | 3098 | |
a8b3b0b6 CR |
3099 | if(m == MATCH_ERROR) |
3100 | gfc_current_locus = where; | |
f4347334 | 3101 | |
203c7ebf | 3102 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
3103 | ts->kind = 8; |
3104 | ||
3105 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3106 | { | |
3107 | if (ts->kind == 4) | |
3108 | { | |
203c7ebf | 3109 | if (flag_real4_kind == 8) |
f4347334 | 3110 | ts->kind = 8; |
203c7ebf | 3111 | if (flag_real4_kind == 10) |
f4347334 | 3112 | ts->kind = 10; |
203c7ebf | 3113 | if (flag_real4_kind == 16) |
f4347334 ZG |
3114 | ts->kind = 16; |
3115 | } | |
3116 | ||
3117 | if (ts->kind == 8) | |
3118 | { | |
203c7ebf | 3119 | if (flag_real8_kind == 4) |
f4347334 | 3120 | ts->kind = 4; |
203c7ebf | 3121 | if (flag_real8_kind == 10) |
f4347334 | 3122 | ts->kind = 10; |
203c7ebf | 3123 | if (flag_real8_kind == 16) |
f4347334 ZG |
3124 | ts->kind = 16; |
3125 | } | |
3126 | } | |
3127 | ||
a8b3b0b6 CR |
3128 | /* Return what we know from the test(s). */ |
3129 | return m; | |
6de9cd9a DN |
3130 | |
3131 | no_match: | |
3132 | gfc_free_expr (e); | |
63645982 | 3133 | gfc_current_locus = where; |
6de9cd9a DN |
3134 | return m; |
3135 | } | |
3136 | ||
3137 | ||
187de1ed FXC |
3138 | static match |
3139 | match_char_kind (int * kind, int * is_iso_c) | |
3140 | { | |
3141 | locus where; | |
3142 | gfc_expr *e; | |
3143 | match m, n; | |
51f03c6b | 3144 | bool fail; |
187de1ed FXC |
3145 | |
3146 | m = MATCH_NO; | |
3147 | e = NULL; | |
3148 | where = gfc_current_locus; | |
3149 | ||
3150 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 3151 | |
1c8bcdf7 | 3152 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 3153 | { |
1c8bcdf7 | 3154 | /* The expression might include use-associated or imported |
f5acf0f2 | 3155 | parameters and try again after the specification |
1c8bcdf7 | 3156 | expressions. */ |
96ee3a4a | 3157 | gfc_free_expr (e); |
96ee3a4a TB |
3158 | gfc_undo_symbols (); |
3159 | return MATCH_YES; | |
3160 | } | |
3161 | ||
187de1ed FXC |
3162 | if (n == MATCH_NO) |
3163 | gfc_error ("Expected initialization expression at %C"); | |
3164 | if (n != MATCH_YES) | |
3165 | return MATCH_ERROR; | |
3166 | ||
3167 | if (e->rank != 0) | |
3168 | { | |
3169 | gfc_error ("Expected scalar initialization expression at %C"); | |
3170 | m = MATCH_ERROR; | |
3171 | goto no_match; | |
3172 | } | |
3173 | ||
87f3a5cf PT |
3174 | if (gfc_derived_parameter_expr (e)) |
3175 | { | |
3176 | saved_kind_expr = e; | |
3177 | *kind = 0; | |
3178 | return MATCH_YES; | |
3179 | } | |
3180 | ||
51f03c6b | 3181 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 3182 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 3183 | if (fail) |
187de1ed | 3184 | { |
187de1ed FXC |
3185 | m = MATCH_ERROR; |
3186 | goto no_match; | |
3187 | } | |
3188 | ||
3189 | gfc_free_expr (e); | |
3190 | ||
3191 | /* Ignore errors to this point, if we've gotten here. This means | |
3192 | we ignore the m=MATCH_ERROR from above. */ | |
3193 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3194 | { | |
3195 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3196 | m = MATCH_ERROR; | |
3197 | } | |
3198 | else | |
3199 | /* All tests passed. */ | |
3200 | m = MATCH_YES; | |
3201 | ||
3202 | if (m == MATCH_ERROR) | |
3203 | gfc_current_locus = where; | |
f5acf0f2 | 3204 | |
187de1ed FXC |
3205 | /* Return what we know from the test(s). */ |
3206 | return m; | |
3207 | ||
3208 | no_match: | |
3209 | gfc_free_expr (e); | |
3210 | gfc_current_locus = where; | |
3211 | return m; | |
3212 | } | |
3213 | ||
8234e5e0 | 3214 | |
6de9cd9a DN |
3215 | /* Match the various kind/length specifications in a CHARACTER |
3216 | declaration. We don't return MATCH_NO. */ | |
3217 | ||
8234e5e0 SK |
3218 | match |
3219 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3220 | { |
187de1ed | 3221 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3222 | gfc_charlen *cl; |
3223 | gfc_expr *len; | |
3224 | match m; | |
e69afb29 | 3225 | bool deferred; |
187de1ed | 3226 | |
6de9cd9a DN |
3227 | len = NULL; |
3228 | seen_length = 0; | |
187de1ed FXC |
3229 | kind = 0; |
3230 | is_iso_c = 0; | |
e69afb29 | 3231 | deferred = false; |
6de9cd9a DN |
3232 | |
3233 | /* Try the old-style specification first. */ | |
3234 | old_char_selector = 0; | |
3235 | ||
2767f2cc | 3236 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3237 | if (m != MATCH_NO) |
3238 | { | |
3239 | if (m == MATCH_YES) | |
3240 | old_char_selector = 1; | |
3241 | seen_length = 1; | |
3242 | goto done; | |
3243 | } | |
3244 | ||
3245 | m = gfc_match_char ('('); | |
3246 | if (m != MATCH_YES) | |
3247 | { | |
a8b3b0b6 | 3248 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3249 | goto done; |
3250 | } | |
3251 | ||
a8b3b0b6 | 3252 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3253 | if (gfc_match (" kind =") == MATCH_YES) |
3254 | { | |
187de1ed | 3255 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3256 | |
6de9cd9a DN |
3257 | if (m == MATCH_ERROR) |
3258 | goto done; | |
3259 | if (m == MATCH_NO) | |
3260 | goto syntax; | |
3261 | ||
3262 | if (gfc_match (" , len =") == MATCH_NO) | |
3263 | goto rparen; | |
3264 | ||
e69afb29 | 3265 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3266 | if (m == MATCH_NO) |
3267 | goto syntax; | |
3268 | if (m == MATCH_ERROR) | |
3269 | goto done; | |
3270 | seen_length = 1; | |
3271 | ||
3272 | goto rparen; | |
3273 | } | |
3274 | ||
66e4ab31 | 3275 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3276 | if (gfc_match (" len =") == MATCH_YES) |
3277 | { | |
e69afb29 | 3278 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3279 | if (m == MATCH_NO) |
3280 | goto syntax; | |
3281 | if (m == MATCH_ERROR) | |
3282 | goto done; | |
3283 | seen_length = 1; | |
3284 | ||
3285 | if (gfc_match_char (')') == MATCH_YES) | |
3286 | goto done; | |
3287 | ||
3288 | if (gfc_match (" , kind =") != MATCH_YES) | |
3289 | goto syntax; | |
3290 | ||
187de1ed FXC |
3291 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3292 | goto done; | |
6de9cd9a DN |
3293 | |
3294 | goto rparen; | |
3295 | } | |
3296 | ||
66e4ab31 | 3297 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3298 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3299 | if (m == MATCH_NO) |
3300 | goto syntax; | |
3301 | if (m == MATCH_ERROR) | |
3302 | goto done; | |
3303 | seen_length = 1; | |
3304 | ||
3305 | m = gfc_match_char (')'); | |
3306 | if (m == MATCH_YES) | |
3307 | goto done; | |
3308 | ||
3309 | if (gfc_match_char (',') != MATCH_YES) | |
3310 | goto syntax; | |
3311 | ||
a8b3b0b6 | 3312 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3313 | |
187de1ed | 3314 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3315 | if (m == MATCH_ERROR) |
3316 | goto done; | |
3317 | if (m == MATCH_NO) | |
3318 | goto syntax; | |
3319 | ||
3320 | rparen: | |
3321 | /* Require a right-paren at this point. */ | |
3322 | m = gfc_match_char (')'); | |
3323 | if (m == MATCH_YES) | |
3324 | goto done; | |
3325 | ||
3326 | syntax: | |
3327 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3328 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3329 | gfc_free_expr (len); |
3330 | return m; | |
6de9cd9a DN |
3331 | |
3332 | done: | |
a99d95a2 PT |
3333 | /* Deal with character functions after USE and IMPORT statements. */ |
3334 | if (gfc_matching_function) | |
1c8bcdf7 | 3335 | { |
a99d95a2 | 3336 | gfc_free_expr (len); |
1c8bcdf7 PT |
3337 | gfc_undo_symbols (); |
3338 | return MATCH_YES; | |
3339 | } | |
3340 | ||
6de9cd9a DN |
3341 | if (m != MATCH_YES) |
3342 | { | |
3343 | gfc_free_expr (len); | |
3344 | return m; | |
3345 | } | |
3346 | ||
3347 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3348 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3349 | |
3350 | if (seen_length == 0) | |
f622221a | 3351 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3352 | else |
00df7c36 | 3353 | { |
3cf89a7b SK |
3354 | /* If gfortran ends up here, then len may be reducible to a constant. |
3355 | Try to do that here. If it does not reduce, simply assign len to | |
3356 | charlen. A complication occurs with user-defined generic functions, | |
3357 | which are not resolved. Use a private namespace to deal with | |
3358 | generic functions. */ | |
3359 | ||
00df7c36 SK |
3360 | if (len && len->expr_type != EXPR_CONSTANT) |
3361 | { | |
3cf89a7b | 3362 | gfc_namespace *old_ns; |
00df7c36 | 3363 | gfc_expr *e; |
3cf89a7b SK |
3364 | |
3365 | old_ns = gfc_current_ns; | |
3366 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3367 | ||
00df7c36 SK |
3368 | e = gfc_copy_expr (len); |
3369 | gfc_reduce_init_expr (e); | |
3370 | if (e->expr_type == EXPR_CONSTANT) | |
58da192e SK |
3371 | { |
3372 | gfc_replace_expr (len, e); | |
3373 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3374 | mpz_set_ui (len->value.integer, 0); | |
3375 | } | |
00df7c36 SK |
3376 | else |
3377 | gfc_free_expr (e); | |
3cf89a7b SK |
3378 | |
3379 | gfc_free_namespace (gfc_current_ns); | |
3380 | gfc_current_ns = old_ns; | |
00df7c36 | 3381 | } |
3cf89a7b SK |
3382 | |
3383 | cl->length = len; | |
00df7c36 | 3384 | } |
6de9cd9a | 3385 | |
bc21d315 | 3386 | ts->u.cl = cl; |
187de1ed | 3387 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3388 | ts->deferred = deferred; |
6de9cd9a | 3389 | |
eea58adb | 3390 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3391 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3392 | if (kind != 0) |
eea58adb | 3393 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3394 | of the named constants from iso_c_binding. */ |
3395 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3396 | else if (len != NULL) |
187de1ed FXC |
3397 | /* Here, we might have parsed something such as: character(c_char) |
3398 | In this case, the parsing code above grabs the c_char when | |
3399 | looking for the length (line 1690, roughly). it's the last | |
3400 | testcase for parsing the kind params of a character variable. | |
3401 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3402 | could be an error. |
187de1ed FXC |
3403 | To see if the user used a C interop kind, test the expr |
3404 | of the so called length, and see if it's C interoperable. */ | |
3405 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3406 | |
6de9cd9a DN |
3407 | return MATCH_YES; |
3408 | } | |
3409 | ||
3410 | ||
f6288c24 FR |
3411 | /* Matches a RECORD declaration. */ |
3412 | ||
3413 | static match | |
e79e6763 | 3414 | match_record_decl (char *name) |
f6288c24 FR |
3415 | { |
3416 | locus old_loc; | |
3417 | old_loc = gfc_current_locus; | |
e79e6763 | 3418 | match m; |
f6288c24 | 3419 | |
e79e6763 FR |
3420 | m = gfc_match (" record /"); |
3421 | if (m == MATCH_YES) | |
f6288c24 | 3422 | { |
f6d17ecd | 3423 | if (!flag_dec_structure) |
f6288c24 FR |
3424 | { |
3425 | gfc_current_locus = old_loc; | |
3426 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3427 | "-fdec-structure"); | |
3428 | return MATCH_ERROR; | |
3429 | } | |
e79e6763 FR |
3430 | m = gfc_match (" %n/", name); |
3431 | if (m == MATCH_YES) | |
3432 | return MATCH_YES; | |
f6288c24 FR |
3433 | } |
3434 | ||
e79e6763 | 3435 | gfc_current_locus = old_loc; |
f6d17ecd | 3436 | if (flag_dec_structure |
e79e6763 FR |
3437 | && (gfc_match (" record% ") == MATCH_YES |
3438 | || gfc_match (" record%t") == MATCH_YES)) | |
3439 | gfc_error ("Structure name expected after RECORD at %C"); | |
3440 | if (m == MATCH_NO) | |
f6288c24 | 3441 | return MATCH_NO; |
e79e6763 FR |
3442 | |
3443 | return MATCH_ERROR; | |
f6288c24 FR |
3444 | } |
3445 | ||
5bab4c96 PT |
3446 | |
3447 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3448 | of expressions to substitute into the possibly parameterized expression | |
3449 | 'e'. Using a list is inefficient but should not be too bad since the | |
3450 | number of type parameters is not likely to be large. */ | |
3451 | static bool | |
3452 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3453 | int* f) | |
3454 | { | |
3455 | gfc_actual_arglist *param; | |
3456 | gfc_expr *copy; | |
3457 | ||
3458 | if (e->expr_type != EXPR_VARIABLE) | |
3459 | return false; | |
3460 | ||
3461 | gcc_assert (e->symtree); | |
3462 | if (e->symtree->n.sym->attr.pdt_kind | |
3463 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3464 | { | |
3465 | for (param = type_param_spec_list; param; param = param->next) | |
3466 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3467 | break; | |
3468 | ||
3469 | if (param) | |
3470 | { | |
3471 | copy = gfc_copy_expr (param->expr); | |
3472 | *e = *copy; | |
3473 | free (copy); | |
3474 | } | |
3475 | } | |
3476 | ||
3477 | return false; | |
3478 | } | |
3479 | ||
3480 | ||
3481 | bool | |
3482 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3483 | { | |
3484 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3485 | } | |
3486 | ||
3487 | ||
3488 | bool | |
3489 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3490 | { | |
3491 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3492 | type_param_spec_list = param_list; | |
3493 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3494 | type_param_spec_list = NULL; | |
3495 | type_param_spec_list = old_param_spec_list; | |
3496 | } | |
3497 | ||
3498 | /* Determines the instance of a parameterized derived type to be used by | |
3499 | matching determining the values of the kind parameters and using them | |
3500 | in the name of the instance. If the instance exists, it is used, otherwise | |
3501 | a new derived type is created. */ | |
3502 | match | |
3503 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3504 | gfc_actual_arglist **ext_param_list) | |
3505 | { | |
3506 | /* The PDT template symbol. */ | |
3507 | gfc_symbol *pdt = *sym; | |
3508 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3509 | gfc_symbol *param; | |
3510 | /* The hoped for instance of the PDT. */ | |
3511 | gfc_symbol *instance; | |
3512 | /* The list of parameters appearing in the PDT declaration. */ | |
3513 | gfc_formal_arglist *type_param_name_list; | |
3514 | /* Used to store the parameter specification list during recursive calls. */ | |
3515 | gfc_actual_arglist *old_param_spec_list; | |
3516 | /* Pointers to the parameter specification being used. */ | |
3517 | gfc_actual_arglist *actual_param; | |
3518 | gfc_actual_arglist *tail = NULL; | |
3519 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3520 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3521 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3522 | ||
3523 | bool name_seen = (param_list == NULL); | |
3524 | bool assumed_seen = false; | |
3525 | bool deferred_seen = false; | |
3526 | bool spec_error = false; | |
3527 | int kind_value, i; | |
3528 | gfc_expr *kind_expr; | |
3529 | gfc_component *c1, *c2; | |
3530 | match m; | |
3531 | ||
3532 | type_param_spec_list = NULL; | |
3533 | ||
3534 | type_param_name_list = pdt->formal; | |
3535 | actual_param = param_list; | |
3536 | sprintf (name, "Pdt%s", pdt->name); | |
3537 | ||
3538 | /* Run through the parameter name list and pick up the actual | |
3539 | parameter values or use the default values in the PDT declaration. */ | |
3540 | for (; type_param_name_list; | |
3541 | type_param_name_list = type_param_name_list->next) | |
3542 | { | |
3543 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3544 | { | |
3545 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3546 | spec_error = deferred_seen; | |
3547 | else | |
3548 | spec_error = assumed_seen; | |
3549 | ||
3550 | if (spec_error) | |
3551 | { | |
3552 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3553 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3554 | goto error_return; |
5bab4c96 PT |
3555 | } |
3556 | } | |
3557 | ||
3558 | if (actual_param && actual_param->name) | |
3559 | name_seen = true; | |
3560 | param = type_param_name_list->sym; | |
3561 | ||
276515e6 PT |
3562 | if (!param || !param->name) |
3563 | continue; | |
3564 | ||
18a4e7e3 | 3565 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3566 | /* An error should already have been thrown in resolve.c |
3567 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3568 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3569 | goto error_return; |
18a4e7e3 | 3570 | |
5bab4c96 PT |
3571 | kind_expr = NULL; |
3572 | if (!name_seen) | |
3573 | { | |
18a4e7e3 PT |
3574 | if (!actual_param && !(c1 && c1->initializer)) |
3575 | { | |
3576 | gfc_error ("The type parameter spec list at %C does not contain " | |
3577 | "enough parameter expressions"); | |
3578 | goto error_return; | |
3579 | } | |
3580 | else if (!actual_param && c1 && c1->initializer) | |
3581 | kind_expr = gfc_copy_expr (c1->initializer); | |
3582 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3583 | kind_expr = gfc_copy_expr (actual_param->expr); |
3584 | } | |
3585 | else | |
3586 | { | |
3587 | actual_param = param_list; | |
3588 | for (;actual_param; actual_param = actual_param->next) | |
3589 | if (actual_param->name | |
3590 | && strcmp (actual_param->name, param->name) == 0) | |
3591 | break; | |
3592 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3593 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3594 | else | |
3595 | { | |
62d3c075 PT |
3596 | if (c1->initializer) |
3597 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3598 | else if (!(actual_param && param->attr.pdt_len)) |
3599 | { | |
71a21b9e | 3600 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3601 | "have a default value", param->name); |
18a4e7e3 | 3602 | goto error_return; |
5bab4c96 PT |
3603 | } |
3604 | } | |
3605 | } | |
3606 | ||
3607 | /* Store the current parameter expressions in a temporary actual | |
3608 | arglist 'list' so that they can be substituted in the corresponding | |
3609 | expressions in the PDT instance. */ | |
3610 | if (type_param_spec_list == NULL) | |
3611 | { | |
3612 | type_param_spec_list = gfc_get_actual_arglist (); | |
3613 | tail = type_param_spec_list; | |
3614 | } | |
3615 | else | |
3616 | { | |
3617 | tail->next = gfc_get_actual_arglist (); | |
3618 | tail = tail->next; | |
3619 | } | |
3620 | tail->name = param->name; | |
3621 | ||
3622 | if (kind_expr) | |
3623 | { | |
87f3a5cf PT |
3624 | /* Try simplification even for LEN expressions. */ |
3625 | gfc_resolve_expr (kind_expr); | |
3626 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3627 | /* Variable expressions seem to default to BT_PROCEDURE. |
3628 | TODO find out why this is and fix it. */ | |
3629 | if (kind_expr->ts.type != BT_INTEGER | |
3630 | && kind_expr->ts.type != BT_PROCEDURE) | |
3631 | { | |
3632 | gfc_error ("The parameter expression at %C must be of " | |
3633 | "INTEGER type and not %s type", | |
3634 | gfc_basic_typename (kind_expr->ts.type)); | |
3635 | goto error_return; | |
3636 | } | |
3637 | ||
5bab4c96 | 3638 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3639 | } |
3640 | ||
3641 | if (actual_param) | |
3642 | tail->spec_type = actual_param->spec_type; | |
3643 | ||
3644 | if (!param->attr.pdt_kind) | |
3645 | { | |
18a4e7e3 | 3646 | if (!name_seen && actual_param) |
5bab4c96 PT |
3647 | actual_param = actual_param->next; |
3648 | if (kind_expr) | |
3649 | { | |
3650 | gfc_free_expr (kind_expr); | |
3651 | kind_expr = NULL; | |
3652 | } | |
3653 | continue; | |
3654 | } | |
3655 | ||
3656 | if (actual_param | |
3657 | && (actual_param->spec_type == SPEC_ASSUMED | |
3658 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3659 | { | |
71a21b9e | 3660 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3661 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3662 | goto error_return; |
5bab4c96 PT |
3663 | } |
3664 | ||
3665 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3666 | { | |
71a21b9e | 3667 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3668 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3669 | goto error_return; |
5bab4c96 PT |
3670 | } |
3671 | ||
3672 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3673 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3674 | |
3675 | if (!name_seen && actual_param) | |
3676 | actual_param = actual_param->next; | |
3677 | gfc_free_expr (kind_expr); | |
3678 | } | |
3679 | ||
18a4e7e3 PT |
3680 | if (!name_seen && actual_param) |
3681 | { | |
3682 | gfc_error ("The type parameter spec list at %C contains too many " | |
3683 | "parameter expressions"); | |
3684 | goto error_return; | |
3685 | } | |
3686 | ||
5bab4c96 PT |
3687 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3688 | build it, using 'pdt' as a template. */ | |
3689 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3690 | { | |
3691 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3692 | goto error_return; |
5bab4c96 PT |
3693 | } |
3694 | ||
3695 | m = MATCH_YES; | |
3696 | ||
3697 | if (instance->attr.flavor == FL_DERIVED | |
3698 | && instance->attr.pdt_type) | |
3699 | { | |
3700 | instance->refs++; | |
3701 | if (ext_param_list) | |
3702 | *ext_param_list = type_param_spec_list; | |
3703 | *sym = instance; | |
3704 | gfc_commit_symbols (); | |
3705 | return m; | |
3706 | } | |
3707 | ||
3708 | /* Start building the new instance of the parameterized type. */ | |
3709 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3710 | instance->attr.pdt_template = 0; | |
3711 | instance->attr.pdt_type = 1; | |
3712 | instance->declared_at = gfc_current_locus; | |
3713 | ||
3714 | /* Add the components, replacing the parameters in all expressions | |
3715 | with the expressions for their values in 'type_param_spec_list'. */ | |
3716 | c1 = pdt->components; | |
3717 | tail = type_param_spec_list; | |
3718 | for (; c1; c1 = c1->next) | |
3719 | { | |
3720 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3721 | |
5bab4c96 PT |
3722 | c2->ts = c1->ts; |
3723 | c2->attr = c1->attr; | |
3724 | ||
276515e6 PT |
3725 | /* The order of declaration of the type_specs might not be the |
3726 | same as that of the components. */ | |
3727 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3728 | { | |
3729 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3730 | if (strcmp (c1->name, tail->name) == 0) | |
3731 | break; | |
3732 | } | |
3733 | ||
5bab4c96 PT |
3734 | /* Deal with type extension by recursively calling this function |
3735 | to obtain the instance of the extended type. */ | |
3736 | if (gfc_current_state () != COMP_DERIVED | |
3737 | && c1 == pdt->components | |
3738 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3739 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3740 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3741 | { | |
3742 | gfc_formal_arglist *f; | |
3743 | ||
3744 | old_param_spec_list = type_param_spec_list; | |
3745 | ||
3746 | /* Obtain a spec list appropriate to the extended type..*/ | |
3747 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3748 | type_param_spec_list = actual_param; | |
3749 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3750 | actual_param = actual_param->next; | |
3751 | if (actual_param) | |
3752 | { | |
3753 | gfc_free_actual_arglist (actual_param->next); | |
3754 | actual_param->next = NULL; | |
3755 | } | |
3756 | ||
3757 | /* Now obtain the PDT instance for the extended type. */ | |
3758 | c2->param_list = type_param_spec_list; | |
3759 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3760 | NULL); | |
3761 | type_param_spec_list = old_param_spec_list; | |
3762 | ||
3763 | c2->ts.u.derived->refs++; | |
3764 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3765 | ||
3766 | /* Set extension level. */ | |
3767 | if (c2->ts.u.derived->attr.extension == 255) | |
3768 | { | |
3769 | /* Since the extension field is 8 bit wide, we can only have | |
3770 | up to 255 extension levels. */ | |
3771 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3772 | c2->ts.u.derived->name, | |
3773 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3774 | goto error_return; |
5bab4c96 PT |
3775 | } |
3776 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3777 | ||
5bab4c96 PT |
3778 | continue; |
3779 | } | |
3780 | ||
3781 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3782 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3783 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3784 | { |
3785 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3786 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3787 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3788 | gfc_extract_int (e, &c2->ts.kind); |
3789 | gfc_free_expr (e); | |
18a4e7e3 PT |
3790 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3791 | { | |
3792 | gfc_error ("Kind %d not supported for type %s at %C", | |
3793 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3794 | goto error_return; | |
3795 | } | |
5bab4c96 PT |
3796 | } |
3797 | ||
3798 | /* Similarly, set the string length if parameterized. */ | |
3799 | if (c1->ts.type == BT_CHARACTER | |
3800 | && c1->ts.u.cl->length | |
3801 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3802 | { | |
3803 | gfc_expr *e; | |
3804 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3805 | gfc_insert_kind_parameter_exprs (e); | |
3806 | gfc_simplify_expr (e, 1); | |
3807 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3808 | c2->ts.u.cl->length = e; | |
3809 | c2->attr.pdt_string = 1; | |
3810 | } | |
3811 | ||
3812 | /* Set up either the KIND/LEN initializer, if constant, | |
3813 | or the parameterized expression. Use the template | |
3814 | initializer if one is not already set in this instance. */ | |
3815 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3816 | { | |
3817 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3818 | c2->initializer = gfc_copy_expr (tail->expr); | |
3819 | else if (tail && tail->expr) | |
3820 | { | |
3821 | c2->param_list = gfc_get_actual_arglist (); | |
3822 | c2->param_list->name = tail->name; | |
3823 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3824 | c2->param_list->next = NULL; | |
3825 | } | |
3826 | ||
3827 | if (!c2->initializer && c1->initializer) | |
3828 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3829 | } |
3830 | ||
3831 | /* Copy the array spec. */ | |
3832 | c2->as = gfc_copy_array_spec (c1->as); | |
3833 | if (c1->ts.type == BT_CLASS) | |
3834 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3835 | ||
3836 | /* Determine if an array spec is parameterized. If so, substitute | |
3837 | in the parameter expressions for the bounds and set the pdt_array | |
3838 | attribute. Notice that this attribute must be unconditionally set | |
3839 | if this is an array of parameterized character length. */ | |
3840 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3841 | { | |
3842 | bool pdt_array = false; | |
3843 | ||
3844 | /* Are the bounds of the array parameterized? */ | |
3845 | for (i = 0; i < c1->as->rank; i++) | |
3846 | { | |
3847 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3848 | pdt_array = true; | |
3849 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3850 | pdt_array = true; | |
3851 | } | |
3852 | ||
3853 | /* If they are, free the expressions for the bounds and | |
3854 | replace them with the template expressions with substitute | |
3855 | values. */ | |
3856 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3857 | { | |
3858 | gfc_expr *e; | |
3859 | e = gfc_copy_expr (c1->as->lower[i]); | |
3860 | gfc_insert_kind_parameter_exprs (e); | |
3861 | gfc_simplify_expr (e, 1); | |
3862 | gfc_free_expr (c2->as->lower[i]); | |
3863 | c2->as->lower[i] = e; | |
3864 | e = gfc_copy_expr (c1->as->upper[i]); | |
3865 | gfc_insert_kind_parameter_exprs (e); | |
3866 | gfc_simplify_expr (e, 1); | |
3867 | gfc_free_expr (c2->as->upper[i]); | |
3868 | c2->as->upper[i] = e; | |
3869 | } | |
3870 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3871 | if (c1->initializer) |
3872 | { | |
3873 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3874 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3875 | gfc_simplify_expr (c2->initializer, 1); | |
3876 | } | |
5bab4c96 PT |
3877 | } |
3878 | ||
3879 | /* Recurse into this function for PDT components. */ | |
3880 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3881 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3882 | { | |
3883 | gfc_actual_arglist *params; | |
3884 | /* The component in the template has a list of specification | |
3885 | expressions derived from its declaration. */ | |
3886 | params = gfc_copy_actual_arglist (c1->param_list); | |
3887 | actual_param = params; | |
3888 | /* Substitute the template parameters with the expressions | |
3889 | from the specification list. */ | |
3890 | for (;actual_param; actual_param = actual_param->next) | |
3891 | gfc_insert_parameter_exprs (actual_param->expr, | |
3892 | type_param_spec_list); | |
3893 | ||
3894 | /* Now obtain the PDT instance for the component. */ | |
3895 | old_param_spec_list = type_param_spec_list; | |
3896 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3897 | type_param_spec_list = old_param_spec_list; | |
3898 | ||
3899 | c2->param_list = params; | |
2fcd5884 PT |
3900 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3901 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3902 | ||
3903 | if (c2->attr.allocatable) | |
3904 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3905 | } |
3906 | } | |
3907 | ||
3908 | gfc_commit_symbol (instance); | |
3909 | if (ext_param_list) | |
3910 | *ext_param_list = type_param_spec_list; | |
3911 | *sym = instance; | |
3912 | return m; | |
18a4e7e3 PT |
3913 | |
3914 | error_return: | |
3915 | gfc_free_actual_arglist (type_param_spec_list); | |
3916 | return MATCH_ERROR; | |
5bab4c96 PT |
3917 | } |
3918 | ||
3919 | ||
e74f1cc8 JW |
3920 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3921 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3922 | IMPLICIT statements. |
3923 | ||
d51347f9 | 3924 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3925 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3926 | statement correctly. */ |
3927 | ||
e2d29968 | 3928 | match |
e74f1cc8 | 3929 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3930 | { |
3931 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3932 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3933 | match m; |
8fc541d3 | 3934 | char c; |
0fb56814 | 3935 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3936 | const char *dt_name; |
6de9cd9a | 3937 | |
5bab4c96 PT |
3938 | decl_type_param_list = NULL; |
3939 | ||
1c8bcdf7 PT |
3940 | /* A belt and braces check that the typespec is correctly being treated |
3941 | as a deferred characteristic association. */ | |
3942 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
3943 | && (gfc_current_block ()->result->ts.kind == -1) |
3944 | && (ts->kind == -1); | |
6de9cd9a | 3945 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
3946 | if (seen_deferred_kind) |
3947 | ts->kind = -1; | |
6de9cd9a | 3948 | |
a8b3b0b6 | 3949 | /* Clear the current binding label, in case one is given. */ |
62603fae | 3950 | curr_binding_label = NULL; |
a8b3b0b6 | 3951 | |
5f700e6d AL |
3952 | if (gfc_match (" byte") == MATCH_YES) |
3953 | { | |
524af0d6 | 3954 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
3955 | return MATCH_ERROR; |
3956 | ||
3957 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3958 | { | |
3959 | gfc_error ("BYTE type used at %C " | |
3960 | "is not available on the target machine"); | |
3961 | return MATCH_ERROR; | |
3962 | } | |
d51347f9 | 3963 | |
5f700e6d AL |
3964 | ts->type = BT_INTEGER; |
3965 | ts->kind = 1; | |
3966 | return MATCH_YES; | |
3967 | } | |
3968 | ||
0fb56814 | 3969 | |
45a69325 | 3970 | m = gfc_match (" type ("); |
0fb56814 | 3971 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3972 | if (matched_type) |
3973 | { | |
3974 | gfc_gobble_whitespace (); | |
3975 | if (gfc_peek_ascii_char () == '*') | |
3976 | { | |
3977 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3978 | return m; | |
f6288c24 | 3979 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3980 | { |
3981 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3982 | return MATCH_ERROR; | |
3983 | } | |
286f737c | 3984 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
45a69325 TB |
3985 | return MATCH_ERROR; |
3986 | ts->type = BT_ASSUMED; | |
3987 | return MATCH_YES; | |
3988 | } | |
3989 | ||
3990 | m = gfc_match ("%n", name); | |
3991 | matched_type = (m == MATCH_YES); | |
3992 | } | |
3993 | ||
0fb56814 TB |
3994 | if ((matched_type && strcmp ("integer", name) == 0) |
3995 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3996 | { |
3997 | ts->type = BT_INTEGER; | |
9d64df18 | 3998 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3999 | goto get_kind; |
4000 | } | |
4001 | ||
0fb56814 TB |
4002 | if ((matched_type && strcmp ("character", name) == 0) |
4003 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 4004 | { |
0fb56814 | 4005 | if (matched_type |
524af0d6 JB |
4006 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4007 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4008 | return MATCH_ERROR; |
4009 | ||
6de9cd9a | 4010 | ts->type = BT_CHARACTER; |
e5ddaa24 | 4011 | if (implicit_flag == 0) |
0fb56814 | 4012 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 4013 | else |
0fb56814 TB |
4014 | m = MATCH_YES; |
4015 | ||
4016 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
4017 | m = MATCH_ERROR; | |
4018 | ||
4019 | return m; | |
6de9cd9a DN |
4020 | } |
4021 | ||
0fb56814 TB |
4022 | if ((matched_type && strcmp ("real", name) == 0) |
4023 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
4024 | { |
4025 | ts->type = BT_REAL; | |
9d64df18 | 4026 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
4027 | goto get_kind; |
4028 | } | |
4029 | ||
0fb56814 TB |
4030 | if ((matched_type |
4031 | && (strcmp ("doubleprecision", name) == 0 | |
4032 | || (strcmp ("double", name) == 0 | |
4033 | && gfc_match (" precision") == MATCH_YES))) | |
4034 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 4035 | { |
0fb56814 | 4036 | if (matched_type |
524af0d6 JB |
4037 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4038 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4039 | return MATCH_ERROR; |
4040 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4041 | return MATCH_ERROR; | |
4042 | ||
6de9cd9a | 4043 | ts->type = BT_REAL; |
9d64df18 | 4044 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4045 | return MATCH_YES; |
4046 | } | |
4047 | ||
0fb56814 TB |
4048 | if ((matched_type && strcmp ("complex", name) == 0) |
4049 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
4050 | { |
4051 | ts->type = BT_COMPLEX; | |
9d64df18 | 4052 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
4053 | goto get_kind; |
4054 | } | |
4055 | ||
0fb56814 TB |
4056 | if ((matched_type |
4057 | && (strcmp ("doublecomplex", name) == 0 | |
4058 | || (strcmp ("double", name) == 0 | |
4059 | && gfc_match (" complex") == MATCH_YES))) | |
4060 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 4061 | { |
524af0d6 | 4062 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
4063 | return MATCH_ERROR; |
4064 | ||
4065 | if (matched_type | |
524af0d6 JB |
4066 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4067 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4068 | return MATCH_ERROR; |
4069 | ||
4070 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
4071 | return MATCH_ERROR; |
4072 | ||
6de9cd9a | 4073 | ts->type = BT_COMPLEX; |
9d64df18 | 4074 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4075 | return MATCH_YES; |
4076 | } | |
4077 | ||
0fb56814 TB |
4078 | if ((matched_type && strcmp ("logical", name) == 0) |
4079 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
4080 | { |
4081 | ts->type = BT_LOGICAL; | |
9d64df18 | 4082 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
4083 | goto get_kind; |
4084 | } | |
4085 | ||
0fb56814 | 4086 | if (matched_type) |
5bab4c96 PT |
4087 | { |
4088 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4089 | if (m == MATCH_ERROR) | |
4090 | return m; | |
4091 | ||
0fb56814 | 4092 | m = gfc_match_char (')'); |
5bab4c96 | 4093 | } |
0fb56814 | 4094 | |
f6288c24 FR |
4095 | if (m != MATCH_YES) |
4096 | m = match_record_decl (name); | |
4097 | ||
4098 | if (matched_type || m == MATCH_YES) | |
4099 | { | |
4100 | ts->type = BT_DERIVED; | |
4101 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4102 | * don't need all the extra derived-type stuff for structures. */ | |
4103 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4104 | { | |
2f029c08 | 4105 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
4106 | return MATCH_ERROR; |
4107 | } | |
5bab4c96 PT |
4108 | |
4109 | if (sym && sym->attr.flavor == FL_DERIVED | |
4110 | && sym->attr.pdt_template | |
4111 | && gfc_current_state () != COMP_DERIVED) | |
4112 | { | |
4113 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4114 | if (m != MATCH_YES) | |
4115 | return m; | |
4116 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4117 | ts->u.derived = sym; | |
4118 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4119 | } | |
4120 | ||
f6288c24 FR |
4121 | if (sym && sym->attr.flavor == FL_STRUCT) |
4122 | { | |
4123 | ts->u.derived = sym; | |
4124 | return MATCH_YES; | |
4125 | } | |
4126 | /* Actually a derived type. */ | |
4127 | } | |
4128 | ||
cf2b3c22 | 4129 | else |
727e8544 | 4130 | { |
f6288c24 | 4131 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 4132 | structure declaration. */ |
f6d17ecd | 4133 | if (flag_dec_structure |
e79e6763 FR |
4134 | && (gfc_current_state () == COMP_STRUCTURE |
4135 | || gfc_current_state () == COMP_MAP)) | |
4136 | { | |
4137 | m = gfc_match (" structure"); | |
4138 | if (m == MATCH_YES) | |
4139 | { | |
4140 | m = gfc_match_structure_decl (); | |
4141 | if (m == MATCH_YES) | |
4142 | { | |
4143 | /* gfc_new_block is updated by match_structure_decl. */ | |
4144 | ts->type = BT_DERIVED; | |
4145 | ts->u.derived = gfc_new_block; | |
4146 | return MATCH_YES; | |
4147 | } | |
4148 | } | |
4149 | if (m == MATCH_ERROR) | |
4150 | return MATCH_ERROR; | |
4151 | } | |
f6288c24 | 4152 | |
528622fd JW |
4153 | /* Match CLASS declarations. */ |
4154 | m = gfc_match (" class ( * )"); | |
4155 | if (m == MATCH_ERROR) | |
4156 | return MATCH_ERROR; | |
4157 | else if (m == MATCH_YES) | |
4158 | { | |
8b704316 PT |
4159 | gfc_symbol *upe; |
4160 | gfc_symtree *st; | |
4161 | ts->type = BT_CLASS; | |
f5acf0f2 | 4162 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
4163 | if (upe == NULL) |
4164 | { | |
f5acf0f2 PT |
4165 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4166 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
4167 | st->n.sym = upe; |
4168 | gfc_set_sym_referenced (upe); | |
4169 | upe->refs++; | |
4170 | upe->ts.type = BT_VOID; | |
4171 | upe->attr.unlimited_polymorphic = 1; | |
4172 | /* This is essential to force the construction of | |
4173 | unlimited polymorphic component class containers. */ | |
4174 | upe->attr.zero_comp = 1; | |
70112e2a | 4175 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 4176 | &gfc_current_locus)) |
b93d8a3f JW |
4177 | return MATCH_ERROR; |
4178 | } | |
8b704316 PT |
4179 | else |
4180 | { | |
b93d8a3f | 4181 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
4182 | st->n.sym = upe; |
4183 | upe->refs++; | |
4184 | } | |
4185 | ts->u.derived = upe; | |
4186 | return m; | |
4187 | } | |
528622fd | 4188 | |
5bab4c96 PT |
4189 | m = gfc_match (" class ("); |
4190 | ||
4191 | if (m == MATCH_YES) | |
4192 | m = gfc_match ("%n", name); | |
4193 | else | |
4194 | return m; | |
4195 | ||
727e8544 JW |
4196 | if (m != MATCH_YES) |
4197 | return m; | |
cf2b3c22 | 4198 | ts->type = BT_CLASS; |
727e8544 | 4199 | |
524af0d6 | 4200 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 4201 | return MATCH_ERROR; |
5bab4c96 PT |
4202 | |
4203 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4204 | if (m == MATCH_ERROR) | |
4205 | return m; | |
4206 | ||
4207 | m = gfc_match_char (')'); | |
4208 | if (m != MATCH_YES) | |
4209 | return m; | |
727e8544 | 4210 | } |
6de9cd9a | 4211 | |
1c8bcdf7 PT |
4212 | /* Defer association of the derived type until the end of the |
4213 | specification block. However, if the derived type can be | |
f5acf0f2 | 4214 | found, add it to the typespec. */ |
1c8bcdf7 | 4215 | if (gfc_matching_function) |
e2d29968 | 4216 | { |
bc21d315 | 4217 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4218 | if (gfc_current_state () != COMP_INTERFACE |
4219 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4220 | { |
4221 | sym = gfc_find_dt_in_generic (sym); | |
4222 | ts->u.derived = sym; | |
4223 | } | |
e2d29968 PT |
4224 | return MATCH_YES; |
4225 | } | |
4226 | ||
4227 | /* Search for the name but allow the components to be defined later. If | |
4228 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4229 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4230 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4231 | symtree with the all lower-case name contains the associated |
4232 | generic function. */ | |
f6288c24 | 4233 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4234 | sym = NULL; |
c3f34952 TB |
4235 | dt_sym = NULL; |
4236 | if (ts->kind != -1) | |
6de9cd9a | 4237 | { |
c3f34952 TB |
4238 | gfc_get_ha_symbol (name, &sym); |
4239 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4240 | { | |
c4100eae | 4241 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4242 | return MATCH_ERROR; |
4243 | } | |
4244 | if (sym->generic && !dt_sym) | |
4245 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4246 | |
4247 | /* Host associated PDTs can get confused with their constructors | |
4248 | because they ar instantiated in the template's namespace. */ | |
4249 | if (!dt_sym) | |
4250 | { | |
4251 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4252 | { | |
4253 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4254 | return MATCH_ERROR; | |
4255 | } | |
4256 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4257 | dt_sym = NULL; | |
4258 | } | |
6de9cd9a | 4259 | } |
e2d29968 PT |
4260 | else if (ts->kind == -1) |
4261 | { | |
1c8bcdf7 PT |
4262 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4263 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4264 | gfc_find_symbol (name, NULL, iface, &sym); |
4265 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4266 | { |
c4100eae | 4267 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4268 | return MATCH_ERROR; |
4269 | } | |
c3f34952 TB |
4270 | if (sym && sym->generic && !dt_sym) |
4271 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4272 | |
1c8bcdf7 | 4273 | ts->kind = 0; |
e2d29968 PT |
4274 | if (sym == NULL) |
4275 | return MATCH_NO; | |
4276 | } | |
6de9cd9a | 4277 | |
f6288c24 | 4278 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4279 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4280 | || sym->attr.subroutine) | |
4281 | { | |
fea70c99 MLI |
4282 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4283 | "entity at %L, which has the same name", name, | |
4284 | &sym->declared_at); | |
c3f34952 TB |
4285 | return MATCH_ERROR; |
4286 | } | |
6de9cd9a | 4287 | |
5bab4c96 PT |
4288 | if (sym && sym->attr.flavor == FL_DERIVED |
4289 | && sym->attr.pdt_template | |
4290 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4291 | { |
4292 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4293 | if (m != MATCH_YES) | |
4294 | return m; | |
4295 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4296 | ts->u.derived = sym; | |
4297 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4298 | } | |
5bab4c96 | 4299 | |
44c57c2f | 4300 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4301 | gfc_set_sym_referenced (sym); |
c3f34952 | 4302 | if (!sym->attr.generic |
524af0d6 | 4303 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4304 | return MATCH_ERROR; |
4305 | ||
4306 | if (!sym->attr.function | |
524af0d6 | 4307 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4308 | return MATCH_ERROR; |
4309 | ||
5bab4c96 PT |
4310 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4311 | && dt_sym->attr.pdt_template | |
4312 | && gfc_current_state () != COMP_DERIVED) | |
4313 | { | |
4314 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4315 | if (m != MATCH_YES) | |
4316 | return m; | |
4317 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4318 | } | |
4319 | ||
c3f34952 TB |
4320 | if (!dt_sym) |
4321 | { | |
4322 | gfc_interface *intr, *head; | |
4323 | ||
4324 | /* Use upper case to save the actual derived-type symbol. */ | |
4325 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4326 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4327 | head = sym->generic; |
4328 | intr = gfc_get_interface (); | |
4329 | intr->sym = dt_sym; | |
4330 | intr->where = gfc_current_locus; | |
4331 | intr->next = head; | |
4332 | sym->generic = intr; | |
4333 | sym->attr.if_source = IFSRC_DECL; | |
4334 | } | |
44c57c2f MM |
4335 | else |
4336 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4337 | |
4338 | gfc_set_sym_referenced (dt_sym); | |
4339 | ||
f6288c24 | 4340 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4341 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4342 | return MATCH_ERROR; |
4343 | ||
4344 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4345 | |
4346 | return MATCH_YES; | |
4347 | ||
4348 | get_kind: | |
0fb56814 | 4349 | if (matched_type |
524af0d6 JB |
4350 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4351 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4352 | return MATCH_ERROR; |
4353 | ||
6de9cd9a DN |
4354 | /* For all types except double, derived and character, look for an |
4355 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4356 | if (implicit_flag == 1) |
0fb56814 TB |
4357 | { |
4358 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4359 | return MATCH_ERROR; | |
4360 | ||
4361 | return MATCH_YES; | |
4362 | } | |
6de9cd9a | 4363 | |
0ff0dfbf TS |
4364 | if (gfc_current_form == FORM_FREE) |
4365 | { | |
0b3624f6 SK |
4366 | c = gfc_peek_ascii_char (); |
4367 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4368 | && c != ':' && c != ',') |
0fb56814 TB |
4369 | { |
4370 | if (matched_type && c == ')') | |
4371 | { | |
4372 | gfc_next_ascii_char (); | |
4373 | return MATCH_YES; | |
4374 | } | |
4375 | return MATCH_NO; | |
4376 | } | |
0ff0dfbf TS |
4377 | } |
4378 | ||
e2d29968 | 4379 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4380 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4381 | { |
4382 | m = gfc_match_old_kind_spec (ts); | |
4383 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4384 | return MATCH_ERROR; | |
4385 | } | |
6de9cd9a | 4386 | |
0fb56814 TB |
4387 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4388 | return MATCH_ERROR; | |
4389 | ||
1c8bcdf7 PT |
4390 | /* Defer association of the KIND expression of function results |
4391 | until after USE and IMPORT statements. */ | |
4392 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4393 | || gfc_matching_function) | |
4394 | return MATCH_YES; | |
4395 | ||
6de9cd9a DN |
4396 | if (m == MATCH_NO) |
4397 | m = MATCH_YES; /* No kind specifier found. */ | |
4398 | ||
4399 | return m; | |
4400 | } | |
4401 | ||
4402 | ||
e5ddaa24 TS |
4403 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4404 | already matched in parse.c, or we would not end up here in the | |
4405 | first place. So the only thing we need to check, is if there is | |
4406 | trailing garbage. If not, the match is successful. */ | |
4407 | ||
4408 | match | |
4409 | gfc_match_implicit_none (void) | |
4410 | { | |
8b7a967e TB |
4411 | char c; |
4412 | match m; | |
4413 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4414 | bool type = false; | |
4415 | bool external = false; | |
a6c63173 TB |
4416 | locus cur_loc = gfc_current_locus; |
4417 | ||
4418 | if (gfc_current_ns->seen_implicit_none | |
4419 | || gfc_current_ns->has_implicit_none_export) | |
4420 | { | |
4421 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4422 | return MATCH_ERROR; | |
4423 | } | |
8b7a967e TB |
4424 | |
4425 | gfc_gobble_whitespace (); | |
4426 | c = gfc_peek_ascii_char (); | |
4427 | if (c == '(') | |
4428 | { | |
4429 | (void) gfc_next_ascii_char (); | |
8179b067 | 4430 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4431 | return MATCH_ERROR; |
a6c63173 TB |
4432 | |
4433 | gfc_gobble_whitespace (); | |
4434 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4435 | { |
a6c63173 TB |
4436 | (void) gfc_next_ascii_char (); |
4437 | type = true; | |
4438 | } | |
4439 | else | |
4440 | for(;;) | |
4441 | { | |
4442 | m = gfc_match (" %n", name); | |
4443 | if (m != MATCH_YES) | |
4444 | return MATCH_ERROR; | |
8b7a967e | 4445 | |
a6c63173 TB |
4446 | if (strcmp (name, "type") == 0) |
4447 | type = true; | |
4448 | else if (strcmp (name, "external") == 0) | |
4449 | external = true; | |
4450 | else | |
4451 | return MATCH_ERROR; | |
8b7a967e | 4452 | |
a6c63173 TB |
4453 | gfc_gobble_whitespace (); |
4454 | c = gfc_next_ascii_char (); | |
4455 | if (c == ',') | |
4456 | continue; | |
4457 | if (c == ')') | |
4458 | break; | |
4459 | return MATCH_ERROR; | |
4460 | } | |
8b7a967e TB |
4461 | } |
4462 | else | |
4463 | type = true; | |
4464 | ||
4465 | if (gfc_match_eos () != MATCH_YES) | |
4466 | return MATCH_ERROR; | |
4467 | ||
a6c63173 | 4468 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4469 | |
4470 | return MATCH_YES; | |
e5ddaa24 TS |
4471 | } |
4472 | ||
4473 | ||
4474 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4475 | ||
4476 | static match | |
1107b970 | 4477 | match_implicit_range (void) |
e5ddaa24 | 4478 | { |
8fc541d3 FXC |
4479 | char c, c1, c2; |
4480 | int inner; | |
e5ddaa24 TS |
4481 | locus cur_loc; |
4482 | ||
4483 | cur_loc = gfc_current_locus; | |
4484 | ||
4485 | gfc_gobble_whitespace (); | |
8fc541d3 | 4486 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4487 | if (c != '(') |
4488 | { | |
4489 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4490 | goto bad; | |
4491 | } | |
4492 | ||
4493 | inner = 1; | |
4494 | while (inner) | |
4495 | { | |
4496 | gfc_gobble_whitespace (); | |
8fc541d3 | 4497 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4498 | if (!ISALPHA (c1)) |
4499 | goto bad; | |
4500 | ||
4501 | gfc_gobble_whitespace (); | |
8fc541d3 | 4502 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4503 | |
4504 | switch (c) | |
4505 | { | |
4506 | case ')': | |
66e4ab31 | 4507 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4508 | |
4509 | case ',': | |
4510 | c2 = c1; | |
4511 | break; | |
4512 | ||
4513 | case '-': | |
4514 | gfc_gobble_whitespace (); | |
8fc541d3 | 4515 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4516 | if (!ISALPHA (c2)) |
4517 | goto bad; | |
4518 | ||
4519 | gfc_gobble_whitespace (); | |
8fc541d3 | 4520 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4521 | |
4522 | if ((c != ',') && (c != ')')) | |
4523 | goto bad; | |
4524 | if (c == ')') | |
4525 | inner = 0; | |
4526 | ||
4527 | break; | |
4528 | ||
4529 | default: | |
4530 | goto bad; | |
4531 | } | |
4532 | ||
4533 | if (c1 > c2) | |
4534 | { | |
4535 | gfc_error ("Letters must be in alphabetic order in " | |
4536 | "IMPLICIT statement at %C"); | |
4537 | goto bad; | |
4538 | } | |
4539 | ||
4540 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4541 | implicits from this IMPLICIT statement. We do not check for |
4542 | conflicts with whatever earlier IMPLICIT statements may have | |
4543 | set. This is done when we've successfully finished matching | |
4544 | the current one. */ | |
524af0d6 | 4545 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4546 | goto bad; |
4547 | } | |
4548 | ||
4549 | return MATCH_YES; | |
4550 | ||
4551 | bad: | |
4552 | gfc_syntax_error (ST_IMPLICIT); | |
4553 | ||
4554 | gfc_current_locus = cur_loc; | |
4555 | return MATCH_ERROR; | |
4556 | } | |
4557 | ||
4558 | ||
4559 | /* Match an IMPLICIT statement, storing the types for | |
4560 | gfc_set_implicit() if the statement is accepted by the parser. | |
4561 | There is a strange looking, but legal syntactic construction | |
4562 | possible. It looks like: | |
4563 | ||
4564 | IMPLICIT INTEGER (a-b) (c-d) | |
4565 | ||
4566 | This is legal if "a-b" is a constant expression that happens to | |
4567 | equal one of the legal kinds for integers. The real problem | |
4568 | happens with an implicit specification that looks like: | |
4569 | ||
4570 | IMPLICIT INTEGER (a-b) | |
4571 | ||
4572 | In this case, a typespec matcher that is "greedy" (as most of the | |
4573 | matchers are) gobbles the character range as a kindspec, leaving | |
4574 | nothing left. We therefore have to go a bit more slowly in the | |
4575 | matching process by inhibiting the kindspec checking during | |
4576 | typespec matching and checking for a kind later. */ | |
4577 | ||
4578 | match | |
4579 | gfc_match_implicit (void) | |
4580 | { | |
4581 | gfc_typespec ts; | |
4582 | locus cur_loc; | |
8fc541d3 | 4583 | char c; |
e5ddaa24 TS |
4584 | match m; |
4585 | ||
8b7a967e TB |
4586 | if (gfc_current_ns->seen_implicit_none) |
4587 | { | |
4588 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4589 | "statement"); | |
4590 | return MATCH_ERROR; | |
4591 | } | |
4592 | ||
44000dbb JD |
4593 | gfc_clear_ts (&ts); |
4594 | ||
e5ddaa24 TS |
4595 | /* We don't allow empty implicit statements. */ |
4596 | if (gfc_match_eos () == MATCH_YES) | |
4597 | { | |
4598 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4599 | return MATCH_ERROR; | |
4600 | } | |
4601 | ||
e5ddaa24 TS |
4602 | do |
4603 | { | |
1107b970 PB |
4604 | /* First cleanup. */ |
4605 | gfc_clear_new_implicit (); | |
4606 | ||
e5ddaa24 | 4607 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4608 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4609 | if (m == MATCH_ERROR) |
4610 | goto error; | |
4611 | if (m == MATCH_NO) | |
4612 | goto syntax; | |
4613 | ||
4614 | cur_loc = gfc_current_locus; | |
1107b970 | 4615 | m = match_implicit_range (); |
e5ddaa24 TS |
4616 | |
4617 | if (m == MATCH_YES) | |
4618 | { | |
1107b970 | 4619 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4620 | gfc_gobble_whitespace (); |
a6c63173 TB |
4621 | c = gfc_peek_ascii_char (); |
4622 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4623 | { |
4624 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4625 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4626 | { |
9d64df18 | 4627 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4628 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4629 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4630 | NULL, 1); |
1107b970 PB |
4631 | } |
4632 | ||
4633 | /* Record the Successful match. */ | |
524af0d6 | 4634 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4635 | return MATCH_ERROR; |
a6c63173 TB |
4636 | if (c == ',') |
4637 | c = gfc_next_ascii_char (); | |
4638 | else if (gfc_match_eos () == MATCH_ERROR) | |
4639 | goto error; | |
1107b970 PB |
4640 | continue; |
4641 | } | |
e5ddaa24 TS |
4642 | |
4643 | gfc_current_locus = cur_loc; | |
4644 | } | |
4645 | ||
1107b970 PB |
4646 | /* Discard the (incorrectly) matched range. */ |
4647 | gfc_clear_new_implicit (); | |
4648 | ||
4649 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4650 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4651 | m = gfc_match_char_spec (&ts); |
1107b970 | 4652 | else |
e5ddaa24 | 4653 | { |
e2d29968 | 4654 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4655 | if (m == MATCH_NO) |
1107b970 PB |
4656 | { |
4657 | m = gfc_match_old_kind_spec (&ts); | |
4658 | if (m == MATCH_ERROR) | |
4659 | goto error; | |
4660 | if (m == MATCH_NO) | |
4661 | goto syntax; | |
4662 | } | |
e5ddaa24 | 4663 | } |
1107b970 PB |
4664 | if (m == MATCH_ERROR) |
4665 | goto error; | |
e5ddaa24 | 4666 | |
1107b970 | 4667 | m = match_implicit_range (); |
e5ddaa24 TS |
4668 | if (m == MATCH_ERROR) |
4669 | goto error; | |
4670 | if (m == MATCH_NO) | |
4671 | goto syntax; | |
4672 | ||
4673 | gfc_gobble_whitespace (); | |
8fc541d3 | 4674 | c = gfc_next_ascii_char (); |
a6c63173 | 4675 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4676 | goto syntax; |
4677 | ||
524af0d6 | 4678 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4679 | return MATCH_ERROR; |
e5ddaa24 TS |
4680 | } |
4681 | while (c == ','); | |
4682 | ||
1107b970 | 4683 | return MATCH_YES; |
e5ddaa24 TS |
4684 | |
4685 | syntax: | |
4686 | gfc_syntax_error (ST_IMPLICIT); | |
4687 | ||
4688 | error: | |
4689 | return MATCH_ERROR; | |
4690 | } | |
4691 | ||
66e4ab31 | 4692 | |
8998be20 TB |
4693 | match |
4694 | gfc_match_import (void) | |
4695 | { | |
4696 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4697 | match m; | |
4698 | gfc_symbol *sym; | |
4699 | gfc_symtree *st; | |
4700 | ||
66e4ab31 SK |
4701 | if (gfc_current_ns->proc_name == NULL |
4702 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4703 | { |
4704 | gfc_error ("IMPORT statement at %C only permitted in " | |
4705 | "an INTERFACE body"); | |
4706 | return MATCH_ERROR; | |
4707 | } | |
4708 | ||
4668d6f9 PT |
4709 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4710 | { | |
4711 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4712 | "in a module procedure interface body"); | |
4713 | return MATCH_ERROR; | |
4714 | } | |
4715 | ||
524af0d6 | 4716 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4717 | return MATCH_ERROR; |
4718 | ||
4719 | if (gfc_match_eos () == MATCH_YES) | |
4720 | { | |
4721 | /* All host variables should be imported. */ | |
4722 | gfc_current_ns->has_import_set = 1; | |
4723 | return MATCH_YES; | |
4724 | } | |
4725 | ||
4726 | if (gfc_match (" ::") == MATCH_YES) | |
4727 | { | |
4728 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4729 | { |
4730 | gfc_error ("Expecting list of named entities at %C"); | |
4731 | return MATCH_ERROR; | |
4732 | } | |
8998be20 TB |
4733 | } |
4734 | ||
4735 | for(;;) | |
4736 | { | |
2e8d9212 | 4737 | sym = NULL; |
8998be20 TB |
4738 | m = gfc_match (" %n", name); |
4739 | switch (m) | |
4740 | { | |
4741 | case MATCH_YES: | |
36d3fb4c | 4742 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4743 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4744 | { |
c4100eae | 4745 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4746 | return MATCH_ERROR; |
4747 | } | |
4e2cf5f5 | 4748 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4749 | && gfc_find_symbol (name, |
4750 | gfc_current_ns->proc_name->ns->parent, | |
4751 | 1, &sym)) | |
636dff67 | 4752 | { |
c4100eae | 4753 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4754 | return MATCH_ERROR; |
4755 | } | |
4756 | ||
4757 | if (sym == NULL) | |
4758 | { | |
c4100eae | 4759 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4760 | "at %C - does not exist.", name); |
4761 | return MATCH_ERROR; | |
4762 | } | |
4763 | ||
dd8b9dde | 4764 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4765 | { |
db30e21c | 4766 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4767 | "at %C", name); |
636dff67 SK |
4768 | goto next_item; |
4769 | } | |
4770 | ||
dd8b9dde | 4771 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4772 | st->n.sym = sym; |
4773 | sym->refs++; | |
5a8af0b4 | 4774 | sym->attr.imported = 1; |
8998be20 | 4775 | |
c3f34952 TB |
4776 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4777 | { | |
4778 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4779 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4780 | lower-case name contains the associated generic function. */ |
c3f34952 | 4781 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4782 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4783 | st->n.sym = sym; |
4784 | sym->refs++; | |
4785 | sym->attr.imported = 1; | |
4786 | } | |
4787 | ||
8998be20 TB |
4788 | goto next_item; |
4789 | ||
4790 | case MATCH_NO: | |
4791 | break; | |
4792 | ||
4793 | case MATCH_ERROR: | |
4794 | return MATCH_ERROR; | |
4795 | } | |
4796 | ||
4797 | next_item: | |
4798 | if (gfc_match_eos () == MATCH_YES) | |
4799 | break; | |
4800 | if (gfc_match_char (',') != MATCH_YES) | |
4801 | goto syntax; | |
4802 | } | |
4803 | ||
4804 | return MATCH_YES; | |
4805 | ||
4806 | syntax: | |
4807 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4808 | return MATCH_ERROR; | |
4809 | } | |
e5ddaa24 | 4810 | |
66e4ab31 | 4811 | |
f2449db4 RS |
4812 | /* A minimal implementation of gfc_match without whitespace, escape |
4813 | characters or variable arguments. Returns true if the next | |
4814 | characters match the TARGET template exactly. */ | |
4815 | ||
4816 | static bool | |
4817 | match_string_p (const char *target) | |
4818 | { | |
4819 | const char *p; | |
4820 | ||
4821 | for (p = target; *p; p++) | |
8fc541d3 | 4822 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4823 | return false; |
4824 | return true; | |
4825 | } | |
4826 | ||
6de9cd9a DN |
4827 | /* Matches an attribute specification including array specs. If |
4828 | successful, leaves the variables current_attr and current_as | |
4829 | holding the specification. Also sets the colon_seen variable for | |
4830 | later use by matchers associated with initializations. | |
4831 | ||
4832 | This subroutine is a little tricky in the sense that we don't know | |
4833 | if we really have an attr-spec until we hit the double colon. | |
4834 | Until that time, we can only return MATCH_NO. This forces us to | |
4835 | check for duplicate specification at this level. */ | |
4836 | ||
4837 | static match | |
4838 | match_attr_spec (void) | |
4839 | { | |
6de9cd9a | 4840 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4841 | enum |
ea20e8be JW |
4842 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4843 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4844 | DECL_DIMENSION, DECL_EXTERNAL, | |
4845 | DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4846 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4847 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4848 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4849 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4850 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4851 | }; |
6de9cd9a DN |
4852 | |
4853 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4854 | #define NUM_DECL GFC_DECL_END | |
4855 | ||
ea20e8be JW |
4856 | /* Make sure that values from sym_intent are safe to be used here. */ |
4857 | gcc_assert (INTENT_IN > 0); | |
4858 | ||
6de9cd9a DN |
4859 | locus start, seen_at[NUM_DECL]; |
4860 | int seen[NUM_DECL]; | |
09639a83 | 4861 | unsigned int d; |
6de9cd9a DN |
4862 | const char *attr; |
4863 | match m; | |
524af0d6 | 4864 | bool t; |
6de9cd9a DN |
4865 | |
4866 | gfc_clear_attr (¤t_attr); | |
63645982 | 4867 | start = gfc_current_locus; |
6de9cd9a DN |
4868 | |
4869 | current_as = NULL; | |
4870 | colon_seen = 0; | |
6f855a26 | 4871 | attr_seen = 0; |
6de9cd9a DN |
4872 | |
4873 | /* See if we get all of the keywords up to the final double colon. */ | |
4874 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4875 | seen[d] = 0; | |
4876 | ||
4877 | for (;;) | |
4878 | { | |
8fc541d3 | 4879 | char ch; |
a8b3b0b6 | 4880 | |
f2449db4 RS |
4881 | d = DECL_NONE; |
4882 | gfc_gobble_whitespace (); | |
4883 | ||
8fc541d3 | 4884 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4885 | if (ch == ':') |
4886 | { | |
4887 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4888 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4889 | break; |
4890 | } | |
4891 | else if (ch == ',') | |
a8b3b0b6 | 4892 | { |
a8b3b0b6 | 4893 | gfc_gobble_whitespace (); |
8fc541d3 | 4894 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4895 | { |
f2449db4 | 4896 | case 'a': |
1eee5628 TB |
4897 | gfc_next_ascii_char (); |
4898 | switch (gfc_next_ascii_char ()) | |
4899 | { | |
4900 | case 'l': | |
4901 | if (match_string_p ("locatable")) | |
4902 | { | |
4903 | /* Matched "allocatable". */ | |
4904 | d = DECL_ALLOCATABLE; | |
4905 | } | |
4906 | break; | |
4907 | ||
4908 | case 's': | |
4909 | if (match_string_p ("ynchronous")) | |
4910 | { | |
4911 | /* Matched "asynchronous". */ | |
4912 | d = DECL_ASYNCHRONOUS; | |
4913 | } | |
4914 | break; | |
34d567d1 FR |
4915 | |
4916 | case 'u': | |
4917 | if (match_string_p ("tomatic")) | |
4918 | { | |
4919 | /* Matched "automatic". */ | |
4920 | d = DECL_AUTOMATIC; | |
4921 | } | |
4922 | break; | |
1eee5628 | 4923 | } |
fe4e525c | 4924 | break; |
f2449db4 RS |
4925 | |
4926 | case 'b': | |
a8b3b0b6 | 4927 | /* Try and match the bind(c). */ |
1eabf70a | 4928 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4929 | if (m == MATCH_YES) |
a8b3b0b6 | 4930 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4931 | else if (m == MATCH_ERROR) |
4932 | goto cleanup; | |
f2449db4 RS |
4933 | break; |
4934 | ||
be59db2d | 4935 | case 'c': |
fe4e525c TB |
4936 | gfc_next_ascii_char (); |
4937 | if ('o' != gfc_next_ascii_char ()) | |
4938 | break; | |
4939 | switch (gfc_next_ascii_char ()) | |
4940 | { | |
4941 | case 'd': | |
4942 | if (match_string_p ("imension")) | |
4943 | { | |
4944 | d = DECL_CODIMENSION; | |
4945 | break; | |
4946 | } | |
191816a3 | 4947 | /* FALLTHRU */ |
fe4e525c TB |
4948 | case 'n': |
4949 | if (match_string_p ("tiguous")) | |
4950 | { | |
4951 | d = DECL_CONTIGUOUS; | |
4952 | break; | |
4953 | } | |
4954 | } | |
be59db2d TB |
4955 | break; |
4956 | ||
f2449db4 RS |
4957 | case 'd': |
4958 | if (match_string_p ("dimension")) | |
4959 | d = DECL_DIMENSION; | |
4960 | break; | |
4961 | ||
4962 | case 'e': | |
4963 | if (match_string_p ("external")) | |
4964 | d = DECL_EXTERNAL; | |
4965 | break; | |
4966 | ||
4967 | case 'i': | |
4968 | if (match_string_p ("int")) | |
4969 | { | |
8fc541d3 | 4970 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4971 | if (ch == 'e') |
4972 | { | |
4973 | if (match_string_p ("nt")) | |
4974 | { | |
4975 | /* Matched "intent". */ | |
ea20e8be JW |
4976 | d = match_intent_spec (); |
4977 | if (d == INTENT_UNKNOWN) | |
4978 | { | |
4979 | m = MATCH_ERROR; | |
4980 | goto cleanup; | |
4981 | } | |
f2449db4 RS |
4982 | } |
4983 | } | |
4984 | else if (ch == 'r') | |
4985 | { | |
4986 | if (match_string_p ("insic")) | |
4987 | { | |
4988 | /* Matched "intrinsic". */ | |
4989 | d = DECL_INTRINSIC; | |
4990 | } | |
4991 | } | |
4992 | } | |
4993 | break; | |
4994 | ||
5bab4c96 PT |
4995 | case 'k': |
4996 | if (match_string_p ("kind")) | |
4997 | d = DECL_KIND; | |
4998 | break; | |
4999 | ||
5000 | case 'l': | |
5001 | if (match_string_p ("len")) | |
5002 | d = DECL_LEN; | |
5003 | break; | |
5004 | ||
f2449db4 RS |
5005 | case 'o': |
5006 | if (match_string_p ("optional")) | |
5007 | d = DECL_OPTIONAL; | |
5008 | break; | |
5009 | ||
5010 | case 'p': | |
8fc541d3 FXC |
5011 | gfc_next_ascii_char (); |
5012 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
5013 | { |
5014 | case 'a': | |
5015 | if (match_string_p ("rameter")) | |
5016 | { | |
5017 | /* Matched "parameter". */ | |
5018 | d = DECL_PARAMETER; | |
5019 | } | |
5020 | break; | |
5021 | ||
5022 | case 'o': | |
5023 | if (match_string_p ("inter")) | |
5024 | { | |
5025 | /* Matched "pointer". */ | |
5026 | d = DECL_POINTER; | |
5027 | } | |
5028 | break; | |
5029 | ||
5030 | case 'r': | |
8fc541d3 | 5031 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5032 | if (ch == 'i') |
5033 | { | |
5034 | if (match_string_p ("vate")) | |
5035 | { | |
5036 | /* Matched "private". */ | |
5037 | d = DECL_PRIVATE; | |
5038 | } | |
5039 | } | |
5040 | else if (ch == 'o') | |
5041 | { | |
5042 | if (match_string_p ("tected")) | |
5043 | { | |
5044 | /* Matched "protected". */ | |
5045 | d = DECL_PROTECTED; | |
5046 | } | |
5047 | } | |
5048 | break; | |
5049 | ||
5050 | case 'u': | |
5051 | if (match_string_p ("blic")) | |
5052 | { | |
5053 | /* Matched "public". */ | |
5054 | d = DECL_PUBLIC; | |
5055 | } | |
5056 | break; | |
5057 | } | |
5058 | break; | |
5059 | ||
5060 | case 's': | |
34d567d1 FR |
5061 | gfc_next_ascii_char (); |
5062 | switch (gfc_next_ascii_char ()) | |
5063 | { | |
5064 | case 'a': | |
5065 | if (match_string_p ("ve")) | |
5066 | { | |
5067 | /* Matched "save". */ | |
5068 | d = DECL_SAVE; | |
5069 | } | |
5070 | break; | |
5071 | ||
5072 | case 't': | |
5073 | if (match_string_p ("atic")) | |
5074 | { | |
5075 | /* Matched "static". */ | |
5076 | d = DECL_STATIC; | |
5077 | } | |
5078 | break; | |
5079 | } | |
f2449db4 RS |
5080 | break; |
5081 | ||
5082 | case 't': | |
5083 | if (match_string_p ("target")) | |
5084 | d = DECL_TARGET; | |
5085 | break; | |
5086 | ||
5087 | case 'v': | |
8fc541d3 FXC |
5088 | gfc_next_ascii_char (); |
5089 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
5090 | if (ch == 'a') |
5091 | { | |
5092 | if (match_string_p ("lue")) | |
5093 | { | |
5094 | /* Matched "value". */ | |
5095 | d = DECL_VALUE; | |
5096 | } | |
5097 | } | |
5098 | else if (ch == 'o') | |
5099 | { | |
5100 | if (match_string_p ("latile")) | |
5101 | { | |
5102 | /* Matched "volatile". */ | |
5103 | d = DECL_VOLATILE; | |
5104 | } | |
5105 | } | |
5106 | break; | |
a8b3b0b6 CR |
5107 | } |
5108 | } | |
d468bcdb | 5109 | |
f2449db4 RS |
5110 | /* No double colon and no recognizable decl_type, so assume that |
5111 | we've been looking at something else the whole time. */ | |
5112 | if (d == DECL_NONE) | |
5113 | { | |
5114 | m = MATCH_NO; | |
5115 | goto cleanup; | |
5116 | } | |
d51347f9 | 5117 | |
acb388a0 JD |
5118 | /* Check to make sure any parens are paired up correctly. */ |
5119 | if (gfc_match_parens () == MATCH_ERROR) | |
5120 | { | |
5121 | m = MATCH_ERROR; | |
5122 | goto cleanup; | |
5123 | } | |
5124 | ||
6de9cd9a | 5125 | seen[d]++; |
63645982 | 5126 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 5127 | |
d3a9eea2 | 5128 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 5129 | { |
d3a9eea2 | 5130 | gfc_array_spec *as = NULL; |
6de9cd9a | 5131 | |
d3a9eea2 TB |
5132 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5133 | d == DECL_CODIMENSION); | |
5134 | ||
5135 | if (current_as == NULL) | |
5136 | current_as = as; | |
5137 | else if (m == MATCH_YES) | |
6de9cd9a | 5138 | { |
524af0d6 | 5139 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 5140 | m = MATCH_ERROR; |
cede9502 | 5141 | free (as); |
6de9cd9a DN |
5142 | } |
5143 | ||
be59db2d TB |
5144 | if (m == MATCH_NO) |
5145 | { | |
d3a9eea2 TB |
5146 | if (d == DECL_CODIMENSION) |
5147 | gfc_error ("Missing codimension specification at %C"); | |
5148 | else | |
5149 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
5150 | m = MATCH_ERROR; |
5151 | } | |
5152 | ||
5153 | if (m == MATCH_ERROR) | |
5154 | goto cleanup; | |
5155 | } | |
6de9cd9a DN |
5156 | } |
5157 | ||
6de9cd9a DN |
5158 | /* Since we've seen a double colon, we have to be looking at an |
5159 | attr-spec. This means that we can now issue errors. */ | |
5160 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5161 | if (seen[d] > 1) | |
5162 | { | |
5163 | switch (d) | |
5164 | { | |
5165 | case DECL_ALLOCATABLE: | |
5166 | attr = "ALLOCATABLE"; | |
5167 | break; | |
1eee5628 TB |
5168 | case DECL_ASYNCHRONOUS: |
5169 | attr = "ASYNCHRONOUS"; | |
5170 | break; | |
be59db2d TB |
5171 | case DECL_CODIMENSION: |
5172 | attr = "CODIMENSION"; | |
5173 | break; | |
fe4e525c TB |
5174 | case DECL_CONTIGUOUS: |
5175 | attr = "CONTIGUOUS"; | |
5176 | break; | |
6de9cd9a DN |
5177 | case DECL_DIMENSION: |
5178 | attr = "DIMENSION"; | |
5179 | break; | |
5180 | case DECL_EXTERNAL: | |
5181 | attr = "EXTERNAL"; | |
5182 | break; | |
5183 | case DECL_IN: | |
5184 | attr = "INTENT (IN)"; | |
5185 | break; | |
5186 | case DECL_OUT: | |
5187 | attr = "INTENT (OUT)"; | |
5188 | break; | |
5189 | case DECL_INOUT: | |
5190 | attr = "INTENT (IN OUT)"; | |
5191 | break; | |
5192 | case DECL_INTRINSIC: | |
5193 | attr = "INTRINSIC"; | |
5194 | break; | |
5195 | case DECL_OPTIONAL: | |
5196 | attr = "OPTIONAL"; | |
5197 | break; | |
5bab4c96 PT |
5198 | case DECL_KIND: |
5199 | attr = "KIND"; | |
5200 | break; | |
5201 | case DECL_LEN: | |
5202 | attr = "LEN"; | |
5203 | break; | |
6de9cd9a DN |
5204 | case DECL_PARAMETER: |
5205 | attr = "PARAMETER"; | |
5206 | break; | |
5207 | case DECL_POINTER: | |
5208 | attr = "POINTER"; | |
5209 | break; | |
ee7e677f TB |
5210 | case DECL_PROTECTED: |
5211 | attr = "PROTECTED"; | |
5212 | break; | |
6de9cd9a DN |
5213 | case DECL_PRIVATE: |
5214 | attr = "PRIVATE"; | |
5215 | break; | |
5216 | case DECL_PUBLIC: | |
5217 | attr = "PUBLIC"; | |
5218 | break; | |
5219 | case DECL_SAVE: | |
5220 | attr = "SAVE"; | |
5221 | break; | |
34d567d1 FR |
5222 | case DECL_STATIC: |
5223 | attr = "STATIC"; | |
5224 | break; | |
5225 | case DECL_AUTOMATIC: | |
5226 | attr = "AUTOMATIC"; | |
5227 | break; | |
6de9cd9a DN |
5228 | case DECL_TARGET: |
5229 | attr = "TARGET"; | |
5230 | break; | |
a8b3b0b6 CR |
5231 | case DECL_IS_BIND_C: |
5232 | attr = "IS_BIND_C"; | |
5233 | break; | |
5234 | case DECL_VALUE: | |
5235 | attr = "VALUE"; | |
5236 | break; | |
775e6c3a TB |
5237 | case DECL_VOLATILE: |
5238 | attr = "VOLATILE"; | |
5239 | break; | |
6de9cd9a | 5240 | default: |
66e4ab31 | 5241 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5242 | } |
5243 | ||
5244 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5245 | m = MATCH_ERROR; | |
5246 | goto cleanup; | |
5247 | } | |
5248 | ||
5249 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5250 | to the current attribute. */ | |
5251 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5252 | { | |
5253 | if (seen[d] == 0) | |
5254 | continue; | |
6f855a26 FR |
5255 | else |
5256 | attr_seen = 1; | |
6de9cd9a | 5257 | |
34d567d1 FR |
5258 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5259 | && !flag_dec_static) | |
5260 | { | |
cf004230 FR |
5261 | gfc_error ("%s at %L is a DEC extension, enable with " |
5262 | "%<-fdec-static%>", | |
34d567d1 FR |
5263 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5264 | m = MATCH_ERROR; | |
5265 | goto cleanup; | |
5266 | } | |
5267 | /* Allow SAVE with STATIC, but don't complain. */ | |
5268 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5269 | continue; | |
5270 | ||
6de9cd9a | 5271 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
5272 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5273 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5274 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5275 | { |
5046aff5 PT |
5276 | if (d == DECL_ALLOCATABLE) |
5277 | { | |
524af0d6 JB |
5278 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5279 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
5280 | { |
5281 | m = MATCH_ERROR; | |
5282 | goto cleanup; | |
5283 | } | |
636dff67 | 5284 | } |
5bab4c96 PT |
5285 | else if (d == DECL_KIND) |
5286 | { | |
5287 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5288 | "attribute at %C in a TYPE definition")) | |
5289 | { | |
5290 | m = MATCH_ERROR; | |
5291 | goto cleanup; | |
5292 | } | |
5293 | if (current_ts.type != BT_INTEGER) | |
5294 | { | |
5295 | gfc_error ("Component with KIND attribute at %C must be " | |
5296 | "INTEGER"); | |
5297 | m = MATCH_ERROR; | |
5298 | goto cleanup; | |
5299 | } | |
5300 | if (current_ts.kind != gfc_default_integer_kind) | |
5301 | { | |
5302 | gfc_error ("Component with KIND attribute at %C must be " | |
5303 | "default integer kind (%d)", | |
5304 | gfc_default_integer_kind); | |
5305 | m = MATCH_ERROR; | |
5306 | goto cleanup; | |
5307 | } | |
5308 | } | |
5309 | else if (d == DECL_LEN) | |
5310 | { | |
5311 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5312 | "attribute at %C in a TYPE definition")) | |
5313 | { | |
5314 | m = MATCH_ERROR; | |
5315 | goto cleanup; | |
5316 | } | |
5317 | if (current_ts.type != BT_INTEGER) | |
5318 | { | |
5319 | gfc_error ("Component with LEN attribute at %C must be " | |
5320 | "INTEGER"); | |
5321 | m = MATCH_ERROR; | |
5322 | goto cleanup; | |
5323 | } | |
5324 | if (current_ts.kind != gfc_default_integer_kind) | |
5325 | { | |
5326 | gfc_error ("Component with LEN attribute at %C must be " | |
5327 | "default integer kind (%d)", | |
5328 | gfc_default_integer_kind); | |
5329 | m = MATCH_ERROR; | |
5330 | goto cleanup; | |
5331 | } | |
5332 | } | |
636dff67 | 5333 | else |
5046aff5 PT |
5334 | { |
5335 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5336 | &seen_at[d]); |
5046aff5 PT |
5337 | m = MATCH_ERROR; |
5338 | goto cleanup; | |
5339 | } | |
6de9cd9a DN |
5340 | } |
5341 | ||
4213f93b | 5342 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5343 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5344 | { |
5345 | if (d == DECL_PRIVATE) | |
5346 | attr = "PRIVATE"; | |
5347 | else | |
5348 | attr = "PUBLIC"; | |
d51347f9 TB |
5349 | if (gfc_current_state () == COMP_DERIVED |
5350 | && gfc_state_stack->previous | |
5351 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5352 | { | |
524af0d6 | 5353 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5354 | "at %L in a TYPE definition", attr, |
524af0d6 | 5355 | &seen_at[d])) |
d51347f9 TB |
5356 | { |
5357 | m = MATCH_ERROR; | |
5358 | goto cleanup; | |
5359 | } | |
5360 | } | |
5361 | else | |
5362 | { | |
5363 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5364 | "specification part of a module", attr, &seen_at[d]); | |
5365 | m = MATCH_ERROR; | |
5366 | goto cleanup; | |
5367 | } | |
4213f93b PT |
5368 | } |
5369 | ||
5bab4c96 PT |
5370 | if (gfc_current_state () != COMP_DERIVED |
5371 | && (d == DECL_KIND || d == DECL_LEN)) | |
5372 | { | |
5373 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5374 | "definition", &seen_at[d]); | |
5375 | m = MATCH_ERROR; | |
5376 | goto cleanup; | |
5377 | } | |
5378 | ||
6de9cd9a DN |
5379 | switch (d) |
5380 | { | |
5381 | case DECL_ALLOCATABLE: | |
5382 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5383 | break; | |
5384 | ||
1eee5628 | 5385 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5386 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5387 | t = false; | |
1eee5628 TB |
5388 | else |
5389 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5390 | break; | |
5391 | ||
be59db2d TB |
5392 | case DECL_CODIMENSION: |
5393 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5394 | break; | |
5395 | ||
fe4e525c | 5396 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5397 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5398 | t = false; | |
fe4e525c TB |
5399 | else |
5400 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5401 | break; | |
5402 | ||
6de9cd9a | 5403 | case DECL_DIMENSION: |
231b2fcc | 5404 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5405 | break; |
5406 | ||
5407 | case DECL_EXTERNAL: | |
5408 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5409 | break; | |
5410 | ||
5411 | case DECL_IN: | |
5412 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5413 | break; | |
5414 | ||
5415 | case DECL_OUT: | |
5416 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5417 | break; | |
5418 | ||
5419 | case DECL_INOUT: | |
5420 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5421 | break; | |
5422 | ||
5423 | case DECL_INTRINSIC: | |
5424 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5425 | break; | |
5426 | ||
5427 | case DECL_OPTIONAL: | |
5428 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5429 | break; | |
5430 | ||
5bab4c96 PT |
5431 | case DECL_KIND: |
5432 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5433 | break; | |
5434 | ||
5435 | case DECL_LEN: | |
5436 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5437 | break; | |
5438 | ||
6de9cd9a | 5439 | case DECL_PARAMETER: |
231b2fcc | 5440 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5441 | break; |
5442 | ||
5443 | case DECL_POINTER: | |
5444 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5445 | break; | |
5446 | ||
ee7e677f | 5447 | case DECL_PROTECTED: |
721be0f4 SK |
5448 | if (gfc_current_state () != COMP_MODULE |
5449 | || (gfc_current_ns->proc_name | |
5450 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5451 | { |
5452 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5453 | "part of a module"); | |
524af0d6 | 5454 | t = false; |
ee7e677f TB |
5455 | break; |
5456 | } | |
5457 | ||
524af0d6 JB |
5458 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5459 | t = false; | |
ee7e677f TB |
5460 | else |
5461 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5462 | break; | |
5463 | ||
6de9cd9a | 5464 | case DECL_PRIVATE: |
231b2fcc TS |
5465 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5466 | &seen_at[d]); | |
6de9cd9a DN |
5467 | break; |
5468 | ||
5469 | case DECL_PUBLIC: | |
231b2fcc TS |
5470 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5471 | &seen_at[d]); | |
6de9cd9a DN |
5472 | break; |
5473 | ||
34d567d1 | 5474 | case DECL_STATIC: |
6de9cd9a | 5475 | case DECL_SAVE: |
80f95228 | 5476 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5477 | break; |
5478 | ||
34d567d1 FR |
5479 | case DECL_AUTOMATIC: |
5480 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5481 | break; | |
5482 | ||
6de9cd9a DN |
5483 | case DECL_TARGET: |
5484 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5485 | break; | |
5486 | ||
a8b3b0b6 CR |
5487 | case DECL_IS_BIND_C: |
5488 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5489 | break; | |
f5acf0f2 | 5490 | |
06469efd | 5491 | case DECL_VALUE: |
524af0d6 JB |
5492 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5493 | t = false; | |
06469efd PT |
5494 | else |
5495 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5496 | break; | |
5497 | ||
775e6c3a | 5498 | case DECL_VOLATILE: |
524af0d6 JB |
5499 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5500 | t = false; | |
775e6c3a TB |
5501 | else |
5502 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5503 | break; | |
5504 | ||
6de9cd9a DN |
5505 | default: |
5506 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5507 | } | |
5508 | ||
524af0d6 | 5509 | if (!t) |
6de9cd9a DN |
5510 | { |
5511 | m = MATCH_ERROR; | |
5512 | goto cleanup; | |
5513 | } | |
5514 | } | |
5515 | ||
dab2cbf8 | 5516 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5517 | if ((gfc_current_state () == COMP_MODULE |
5518 | || gfc_current_state () == COMP_SUBMODULE) | |
5519 | && !current_attr.save | |
dab2cbf8 | 5520 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5521 | current_attr.save = SAVE_IMPLICIT; |
5522 | ||
6de9cd9a DN |
5523 | colon_seen = 1; |
5524 | return MATCH_YES; | |
5525 | ||
5526 | cleanup: | |
63645982 | 5527 | gfc_current_locus = start; |
6de9cd9a DN |
5528 | gfc_free_array_spec (current_as); |
5529 | current_as = NULL; | |
6f855a26 | 5530 | attr_seen = 0; |
6de9cd9a DN |
5531 | return m; |
5532 | } | |
5533 | ||
5534 | ||
a8b3b0b6 CR |
5535 | /* Set the binding label, dest_label, either with the binding label |
5536 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5537 | will be the symbol name in all lower case, as required by the draft | |
5538 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5539 | there is more than one argument (num_idents), it is an error. */ | |
5540 | ||
524af0d6 | 5541 | static bool |
f5acf0f2 | 5542 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5543 | int num_idents) |
a8b3b0b6 | 5544 | { |
ad4a2f64 | 5545 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5546 | { |
ad4a2f64 TB |
5547 | gfc_error ("Multiple identifiers provided with " |
5548 | "single NAME= specifier at %C"); | |
524af0d6 | 5549 | return false; |
ad4a2f64 | 5550 | } |
a8b3b0b6 | 5551 | |
62603fae | 5552 | if (curr_binding_label) |
eea58adb | 5553 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5554 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5555 | else |
5556 | { | |
5557 | /* No binding label given, and the NAME= specifier did not exist, | |
5558 | which means there was no NAME="". */ | |
5559 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5560 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5561 | } |
f5acf0f2 | 5562 | |
524af0d6 | 5563 | return true; |
a8b3b0b6 CR |
5564 | } |
5565 | ||
5566 | ||
5567 | /* Set the status of the given common block as being BIND(C) or not, | |
5568 | depending on the given parameter, is_bind_c. */ | |
5569 | ||
5570 | void | |
5571 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5572 | { | |
5573 | com_block->is_bind_c = is_bind_c; | |
5574 | return; | |
5575 | } | |
5576 | ||
5577 | ||
5578 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5579 | ||
524af0d6 | 5580 | bool |
00820a2a | 5581 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5582 | { |
bc21d315 | 5583 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5584 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5585 | ? true : false; |
00820a2a | 5586 | else if (ts->type == BT_CLASS) |
524af0d6 | 5587 | return false; |
45a69325 | 5588 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5589 | return false; |
45a69325 | 5590 | |
524af0d6 | 5591 | return true; |
a8b3b0b6 CR |
5592 | } |
5593 | ||
5594 | ||
5595 | /* Verify that the variables of a given common block, which has been | |
5596 | defined with the attribute specifier bind(c), to be of a C | |
5597 | interoperable type. Errors will be reported here, if | |
5598 | encountered. */ | |
5599 | ||
524af0d6 | 5600 | bool |
a8b3b0b6 CR |
5601 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5602 | { | |
5603 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5604 | bool retval = true; |
a8b3b0b6 CR |
5605 | |
5606 | curr_sym = com_block->head; | |
f5acf0f2 | 5607 | |
a8b3b0b6 CR |
5608 | /* Make sure we have at least one symbol. */ |
5609 | if (curr_sym == NULL) | |
5610 | return retval; | |
5611 | ||
5612 | /* Here we know we have a symbol, so we'll execute this loop | |
5613 | at least once. */ | |
5614 | do | |
5615 | { | |
5616 | /* The second to last param, 1, says this is in a common block. */ | |
5617 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5618 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5619 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5620 | |
5621 | return retval; | |
5622 | } | |
5623 | ||
5624 | ||
5625 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5626 | an appropriate error message is reported. */ | |
5627 | ||
524af0d6 | 5628 | bool |
a8b3b0b6 CR |
5629 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5630 | int is_in_common, gfc_common_head *com_block) | |
5631 | { | |
8327f9c2 | 5632 | bool bind_c_function = false; |
524af0d6 | 5633 | bool retval = true; |
d8fa96e0 | 5634 | |
8327f9c2 TB |
5635 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5636 | bind_c_function = true; | |
5637 | ||
d8fa96e0 CR |
5638 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5639 | { | |
5640 | tmp_sym = tmp_sym->result; | |
5641 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5642 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5643 | { |
48749dbc MLI |
5644 | gfc_warning (OPT_Wc_binding_type, |
5645 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5646 | "%L may not be C interoperable", tmp_sym->name, |
5647 | &tmp_sym->declared_at); | |
5648 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5649 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5650 | tmp_sym->ts.is_c_interop = 1; | |
5651 | tmp_sym->attr.is_c_interop = 1; | |
5652 | } | |
5653 | } | |
8327f9c2 | 5654 | |
a8b3b0b6 CR |
5655 | /* Here, we know we have the bind(c) attribute, so if we have |
5656 | enough type info, then verify that it's a C interop kind. | |
5657 | The info could be in the symbol already, or possibly still in | |
5658 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5659 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5660 | { |
524af0d6 | 5661 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5662 | { |
5663 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5664 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5665 | { |
48749dbc MLI |
5666 | gfc_warning (OPT_Wc_binding_type, |
5667 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5668 | "may not be a C interoperable " |
48749dbc | 5669 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5670 | tmp_sym->name, com_block->name, |
5671 | &(tmp_sym->declared_at), com_block->name); | |
5672 | } | |
5673 | else | |
5674 | { | |
5675 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5676 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5677 | "interoperable but it is BIND(C)", |
5678 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5679 | else if (warn_c_binding_type) |
48749dbc | 5680 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5681 | "may not be a C interoperable " |
c4100eae | 5682 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5683 | tmp_sym->name, &(tmp_sym->declared_at)); |
5684 | } | |
5685 | } | |
f5acf0f2 | 5686 | |
a8b3b0b6 CR |
5687 | /* Variables declared w/in a common block can't be bind(c) |
5688 | since there's no way for C to see these variables, so there's | |
5689 | semantically no reason for the attribute. */ | |
5690 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5691 | { | |
c4100eae | 5692 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5693 | "%L cannot be declared with BIND(C) " |
5694 | "since it is not a global", | |
5695 | tmp_sym->name, com_block->name, | |
5696 | &(tmp_sym->declared_at)); | |
524af0d6 | 5697 | retval = false; |
a8b3b0b6 | 5698 | } |
f5acf0f2 | 5699 | |
67914693 | 5700 | /* Scalar variables that are bind(c) cannot have the pointer |
a8b3b0b6 CR |
5701 | or allocatable attributes. */ |
5702 | if (tmp_sym->attr.is_bind_c == 1) | |
5703 | { | |
5704 | if (tmp_sym->attr.pointer == 1) | |
5705 | { | |
c4100eae | 5706 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5707 | "POINTER and BIND(C) attributes", |
5708 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5709 | retval = false; |
a8b3b0b6 CR |
5710 | } |
5711 | ||
5712 | if (tmp_sym->attr.allocatable == 1) | |
5713 | { | |
c4100eae | 5714 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5715 | "ALLOCATABLE and BIND(C) attributes", |
5716 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5717 | retval = false; |
a8b3b0b6 CR |
5718 | } |
5719 | ||
8327f9c2 TB |
5720 | } |
5721 | ||
5722 | /* If it is a BIND(C) function, make sure the return value is a | |
5723 | scalar value. The previous tests in this function made sure | |
5724 | the type is interoperable. */ | |
5725 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5726 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5727 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5728 | ||
67914693 | 5729 | /* BIND(C) functions cannot return a character string. */ |
8327f9c2 | 5730 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) |
bc21d315 JW |
5731 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5732 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5733 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
86ba9ce6 | 5734 | gfc_error ("Return type of BIND(C) function %qs of character " |
0f4f8561 | 5735 | "type at %L must have length 1", tmp_sym->name, |
a8b3b0b6 | 5736 | &(tmp_sym->declared_at)); |
a8b3b0b6 CR |
5737 | } |
5738 | ||
5739 | /* See if the symbol has been marked as private. If it has, make sure | |
5740 | there is no binding label and warn the user if there is one. */ | |
5741 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5742 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5743 | /* Use gfc_warning_now because we won't say that the symbol fails |
5744 | just because of this. */ | |
db30e21c | 5745 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5746 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5747 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5748 | ||
5749 | return retval; | |
5750 | } | |
5751 | ||
5752 | ||
5753 | /* Set the appropriate fields for a symbol that's been declared as | |
5754 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5755 | the type is C interoperable. Errors are reported by the functions | |
5756 | used to set/test these fields. */ | |
5757 | ||
524af0d6 | 5758 | bool |
a8b3b0b6 CR |
5759 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5760 | { | |
524af0d6 | 5761 | bool retval = true; |
f5acf0f2 | 5762 | |
a8b3b0b6 CR |
5763 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5764 | ||
5765 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5766 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5767 | ||
524af0d6 JB |
5768 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5769 | return false; | |
a8b3b0b6 CR |
5770 | |
5771 | return retval; | |
5772 | } | |
5773 | ||
5774 | ||
5775 | /* Set the fields marking the given common block as BIND(C), including | |
5776 | a binding label, and report any errors encountered. */ | |
5777 | ||
524af0d6 | 5778 | bool |
a8b3b0b6 CR |
5779 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5780 | { | |
524af0d6 | 5781 | bool retval = true; |
f5acf0f2 | 5782 | |
a8b3b0b6 | 5783 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5784 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5785 | num_idents)) |
5786 | return false; | |
a8b3b0b6 CR |
5787 | |
5788 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5789 | set_com_block_bind_c (com_block, 1); | |
5790 | ||
5791 | return retval; | |
5792 | } | |
5793 | ||
5794 | ||
5795 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5796 | attribute applies to. */ | |
5797 | ||
524af0d6 | 5798 | bool |
a8b3b0b6 CR |
5799 | get_bind_c_idents (void) |
5800 | { | |
5801 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5802 | int num_idents = 0; | |
5803 | gfc_symbol *tmp_sym = NULL; | |
5804 | match found_id; | |
5805 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5806 | |
a8b3b0b6 CR |
5807 | if (gfc_match_name (name) == MATCH_YES) |
5808 | { | |
5809 | found_id = MATCH_YES; | |
5810 | gfc_get_ha_symbol (name, &tmp_sym); | |
5811 | } | |
5812 | else if (match_common_name (name) == MATCH_YES) | |
5813 | { | |
5814 | found_id = MATCH_YES; | |
5815 | com_block = gfc_get_common (name, 0); | |
5816 | } | |
5817 | else | |
5818 | { | |
5819 | gfc_error ("Need either entity or common block name for " | |
5820 | "attribute specification statement at %C"); | |
524af0d6 | 5821 | return false; |
a8b3b0b6 | 5822 | } |
f5acf0f2 | 5823 | |
a8b3b0b6 CR |
5824 | /* Save the current identifier and look for more. */ |
5825 | do | |
5826 | { | |
5827 | /* Increment the number of identifiers found for this spec stmt. */ | |
5828 | num_idents++; | |
5829 | ||
5830 | /* Make sure we have a sym or com block, and verify that it can | |
5831 | be bind(c). Set the appropriate field(s) and look for more | |
5832 | identifiers. */ | |
f5acf0f2 | 5833 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5834 | { |
5835 | if (tmp_sym != NULL) | |
5836 | { | |
524af0d6 JB |
5837 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5838 | return false; | |
a8b3b0b6 CR |
5839 | } |
5840 | else | |
5841 | { | |
524af0d6 JB |
5842 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5843 | return false; | |
a8b3b0b6 | 5844 | } |
f5acf0f2 | 5845 | |
a8b3b0b6 CR |
5846 | /* Look to see if we have another identifier. */ |
5847 | tmp_sym = NULL; | |
5848 | if (gfc_match_eos () == MATCH_YES) | |
5849 | found_id = MATCH_NO; | |
5850 | else if (gfc_match_char (',') != MATCH_YES) | |
5851 | found_id = MATCH_NO; | |
5852 | else if (gfc_match_name (name) == MATCH_YES) | |
5853 | { | |
5854 | found_id = MATCH_YES; | |
5855 | gfc_get_ha_symbol (name, &tmp_sym); | |
5856 | } | |
5857 | else if (match_common_name (name) == MATCH_YES) | |
5858 | { | |
5859 | found_id = MATCH_YES; | |
5860 | com_block = gfc_get_common (name, 0); | |
5861 | } | |
5862 | else | |
5863 | { | |
5864 | gfc_error ("Missing entity or common block name for " | |
5865 | "attribute specification statement at %C"); | |
524af0d6 | 5866 | return false; |
a8b3b0b6 CR |
5867 | } |
5868 | } | |
5869 | else | |
5870 | { | |
5871 | gfc_internal_error ("Missing symbol"); | |
5872 | } | |
5873 | } while (found_id == MATCH_YES); | |
5874 | ||
5875 | /* if we get here we were successful */ | |
524af0d6 | 5876 | return true; |
a8b3b0b6 CR |
5877 | } |
5878 | ||
5879 | ||
5880 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5881 | |
a8b3b0b6 CR |
5882 | match |
5883 | gfc_match_bind_c_stmt (void) | |
5884 | { | |
5885 | match found_match = MATCH_NO; | |
5886 | gfc_typespec *ts; | |
5887 | ||
5888 | ts = ¤t_ts; | |
f5acf0f2 | 5889 | |
a8b3b0b6 CR |
5890 | /* This may not be necessary. */ |
5891 | gfc_clear_ts (ts); | |
5892 | /* Clear the temporary binding label holder. */ | |
62603fae | 5893 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5894 | |
5895 | /* Look for the bind(c). */ | |
1eabf70a | 5896 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5897 | |
5898 | if (found_match == MATCH_YES) | |
5899 | { | |
878cdb7b TB |
5900 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5901 | return MATCH_ERROR; | |
5902 | ||
a8b3b0b6 CR |
5903 | /* Look for the :: now, but it is not required. */ |
5904 | gfc_match (" :: "); | |
5905 | ||
5906 | /* Get the identifier(s) that needs to be updated. This may need to | |
5907 | change to hand the flag(s) for the attr specified so all identifiers | |
5908 | found can have all appropriate parts updated (assuming that the same | |
5909 | spec stmt can have multiple attrs, such as both bind(c) and | |
5910 | allocatable...). */ | |
524af0d6 | 5911 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5912 | /* Error message should have printed already. */ |
5913 | return MATCH_ERROR; | |
5914 | } | |
5915 | ||
5916 | return found_match; | |
5917 | } | |
5918 | ||
5919 | ||
6de9cd9a DN |
5920 | /* Match a data declaration statement. */ |
5921 | ||
5922 | match | |
5923 | gfc_match_data_decl (void) | |
5924 | { | |
5925 | gfc_symbol *sym; | |
5926 | match m; | |
949d5b72 | 5927 | int elem; |
6de9cd9a | 5928 | |
5bab4c96 PT |
5929 | type_param_spec_list = NULL; |
5930 | decl_type_param_list = NULL; | |
5931 | ||
a8b3b0b6 | 5932 | num_idents_on_line = 0; |
f5acf0f2 | 5933 | |
e74f1cc8 | 5934 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5935 | if (m != MATCH_YES) |
5936 | return m; | |
5937 | ||
2e23972e | 5938 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5939 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5940 | { |
bc21d315 | 5941 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5942 | |
5943 | if (sym == NULL) | |
5944 | { | |
5945 | m = MATCH_ERROR; | |
5946 | goto cleanup; | |
5947 | } | |
5948 | ||
bc21d315 | 5949 | current_ts.u.derived = sym; |
6de9cd9a DN |
5950 | } |
5951 | ||
5952 | m = match_attr_spec (); | |
5953 | if (m == MATCH_ERROR) | |
5954 | { | |
5955 | m = MATCH_NO; | |
5956 | goto cleanup; | |
5957 | } | |
5958 | ||
8b704316 PT |
5959 | if (current_ts.type == BT_CLASS |
5960 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5961 | goto ok; | |
5962 | ||
2e23972e JW |
5963 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5964 | && current_ts.u.derived->components == NULL | |
bc21d315 | 5965 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
5966 | { |
5967 | ||
f6288c24 | 5968 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
5969 | goto ok; |
5970 | ||
00cad178 | 5971 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
bf9f15ee PT |
5972 | goto ok; |
5973 | ||
bc21d315 | 5974 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 5975 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 5976 | |
976e21f6 | 5977 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
5978 | which has its components defined, or be a structure definition |
5979 | actively being parsed. */ | |
5980 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 5981 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
5982 | || current_ts.u.derived->attr.zero_comp |
5983 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
5984 | goto ok; |
5985 | ||
a1b80ec7 JW |
5986 | gfc_error ("Derived type at %C has not been previously defined " |
5987 | "and so cannot appear in a derived type definition"); | |
5988 | m = MATCH_ERROR; | |
5989 | goto cleanup; | |
6de9cd9a DN |
5990 | } |
5991 | ||
5992 | ok: | |
5993 | /* If we have an old-style character declaration, and no new-style | |
5994 | attribute specifications, then there a comma is optional between | |
5995 | the type specification and the variable list. */ | |
5996 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5997 | gfc_match_char (','); | |
5998 | ||
949d5b72 PT |
5999 | /* Give the types/attributes to symbols that follow. Give the element |
6000 | a number so that repeat character length expressions can be copied. */ | |
6001 | elem = 1; | |
6de9cd9a DN |
6002 | for (;;) |
6003 | { | |
a8b3b0b6 | 6004 | num_idents_on_line++; |
949d5b72 | 6005 | m = variable_decl (elem++); |
6de9cd9a DN |
6006 | if (m == MATCH_ERROR) |
6007 | goto cleanup; | |
6008 | if (m == MATCH_NO) | |
6009 | break; | |
6010 | ||
6011 | if (gfc_match_eos () == MATCH_YES) | |
6012 | goto cleanup; | |
6013 | if (gfc_match_char (',') != MATCH_YES) | |
6014 | break; | |
6015 | } | |
6016 | ||
0f447a6e | 6017 | if (!gfc_error_flag_test ()) |
94903212 FR |
6018 | { |
6019 | /* An anonymous structure declaration is unambiguous; if we matched one | |
6020 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
6021 | here to avoid confusing the remaining matchers, even if there was an | |
6022 | error during variable_decl. We must flush any such errors. Note this | |
6023 | causes the parser to gracefully continue parsing the remaining input | |
6024 | as a structure body, which likely follows. */ | |
6025 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6026 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6027 | { | |
6028 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6029 | " at %C"); | |
6030 | /* Skip the bad variable_decl and line up for the start of the | |
6031 | structure body. */ | |
6032 | gfc_error_recovery (); | |
6033 | m = MATCH_YES; | |
6034 | goto cleanup; | |
6035 | } | |
6036 | ||
6037 | gfc_error ("Syntax error in data declaration at %C"); | |
6038 | } | |
6039 | ||
6de9cd9a DN |
6040 | m = MATCH_ERROR; |
6041 | ||
a9f6f1f2 JD |
6042 | gfc_free_data_all (gfc_current_ns); |
6043 | ||
6de9cd9a | 6044 | cleanup: |
5bab4c96 PT |
6045 | if (saved_kind_expr) |
6046 | gfc_free_expr (saved_kind_expr); | |
6047 | if (type_param_spec_list) | |
6048 | gfc_free_actual_arglist (type_param_spec_list); | |
6049 | if (decl_type_param_list) | |
6050 | gfc_free_actual_arglist (decl_type_param_list); | |
6051 | saved_kind_expr = NULL; | |
6de9cd9a DN |
6052 | gfc_free_array_spec (current_as); |
6053 | current_as = NULL; | |
6054 | return m; | |
6055 | } | |
6056 | ||
6057 | ||
6058 | /* Match a prefix associated with a function or subroutine | |
6059 | declaration. If the typespec pointer is nonnull, then a typespec | |
6060 | can be matched. Note that if nothing matches, MATCH_YES is | |
6061 | returned (the null string was matched). */ | |
6062 | ||
1c8bcdf7 PT |
6063 | match |
6064 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 6065 | { |
7389bce6 | 6066 | bool seen_type; |
e6c14898 DK |
6067 | bool seen_impure; |
6068 | bool found_prefix; | |
6de9cd9a DN |
6069 | |
6070 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
6071 | seen_type = false; |
6072 | seen_impure = false; | |
6de9cd9a | 6073 | |
3df684e2 DK |
6074 | gcc_assert (!gfc_matching_prefix); |
6075 | gfc_matching_prefix = true; | |
f37e928c | 6076 | |
e6c14898 | 6077 | do |
6de9cd9a | 6078 | { |
e6c14898 | 6079 | found_prefix = false; |
6de9cd9a | 6080 | |
70112e2a PT |
6081 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6082 | corresponding attribute seems natural and distinguishes these | |
6083 | procedures from procedure types of PROC_MODULE, which these are | |
6084 | as well. */ | |
6085 | if (gfc_match ("module% ") == MATCH_YES) | |
6086 | { | |
6087 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6088 | goto error; | |
6089 | ||
6090 | current_attr.module_procedure = 1; | |
6091 | found_prefix = true; | |
6092 | } | |
6093 | ||
e6c14898 DK |
6094 | if (!seen_type && ts != NULL |
6095 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6096 | && gfc_match_space () == MATCH_YES) | |
6097 | { | |
6de9cd9a | 6098 | |
e6c14898 DK |
6099 | seen_type = true; |
6100 | found_prefix = true; | |
6101 | } | |
6102 | ||
6103 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6104 | { | |
524af0d6 | 6105 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
6106 | goto error; |
6107 | ||
6108 | found_prefix = true; | |
6109 | } | |
6110 | ||
6111 | if (gfc_match ("pure% ") == MATCH_YES) | |
6112 | { | |
524af0d6 | 6113 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
6114 | goto error; |
6115 | ||
6116 | found_prefix = true; | |
6117 | } | |
6de9cd9a | 6118 | |
e6c14898 DK |
6119 | if (gfc_match ("recursive% ") == MATCH_YES) |
6120 | { | |
524af0d6 | 6121 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
6122 | goto error; |
6123 | ||
6124 | found_prefix = true; | |
6125 | } | |
6126 | ||
6127 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6128 | attribute but rather only prevents ELEMENTAL routines from being | |
6129 | automatically PURE. */ | |
6130 | if (gfc_match ("impure% ") == MATCH_YES) | |
6131 | { | |
524af0d6 | 6132 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
6133 | goto error; |
6134 | ||
6135 | seen_impure = true; | |
6136 | found_prefix = true; | |
6137 | } | |
6de9cd9a | 6138 | } |
e6c14898 | 6139 | while (found_prefix); |
6de9cd9a | 6140 | |
e6c14898 DK |
6141 | /* IMPURE and PURE must not both appear, of course. */ |
6142 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 6143 | { |
e6c14898 DK |
6144 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6145 | goto error; | |
6de9cd9a DN |
6146 | } |
6147 | ||
e6c14898 DK |
6148 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6149 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 6150 | { |
524af0d6 | 6151 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 6152 | goto error; |
6de9cd9a DN |
6153 | } |
6154 | ||
6155 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 6156 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 6157 | |
3df684e2 | 6158 | gfc_matching_prefix = false; |
6de9cd9a | 6159 | return MATCH_YES; |
f37e928c DK |
6160 | |
6161 | error: | |
3df684e2 DK |
6162 | gcc_assert (gfc_matching_prefix); |
6163 | gfc_matching_prefix = false; | |
f37e928c | 6164 | return MATCH_ERROR; |
6de9cd9a DN |
6165 | } |
6166 | ||
6167 | ||
1c8bcdf7 | 6168 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 6169 | |
524af0d6 | 6170 | static bool |
636dff67 | 6171 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 6172 | { |
6442a6f4 PT |
6173 | if (dest->module_procedure) |
6174 | { | |
6175 | if (current_attr.elemental) | |
6176 | dest->elemental = 1; | |
6177 | ||
6178 | if (current_attr.pure) | |
6179 | dest->pure = 1; | |
6180 | ||
6181 | if (current_attr.recursive) | |
6182 | dest->recursive = 1; | |
6183 | ||
6184 | /* Module procedures are unusual in that the 'dest' is copied from | |
6185 | the interface declaration. However, this is an oportunity to | |
6186 | check that the submodule declaration is compliant with the | |
6187 | interface. */ | |
6188 | if (dest->elemental && !current_attr.elemental) | |
6189 | { | |
6190 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6191 | "missing at %L", where); | |
6192 | return false; | |
6193 | } | |
6194 | ||
6195 | if (dest->pure && !current_attr.pure) | |
6196 | { | |
6197 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6198 | "missing at %L", where); | |
6199 | return false; | |
6200 | } | |
6201 | ||
6202 | if (dest->recursive && !current_attr.recursive) | |
6203 | { | |
6204 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6205 | "missing at %L", where); | |
6206 | return false; | |
6207 | } | |
6208 | ||
6209 | return true; | |
6210 | } | |
6de9cd9a | 6211 | |
524af0d6 JB |
6212 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6213 | return false; | |
6de9cd9a | 6214 | |
6442a6f4 PT |
6215 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6216 | return false; | |
6217 | ||
524af0d6 JB |
6218 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6219 | return false; | |
6de9cd9a | 6220 | |
524af0d6 | 6221 | return true; |
6de9cd9a DN |
6222 | } |
6223 | ||
6224 | ||
5bab4c96 PT |
6225 | /* Match a formal argument list or, if typeparam is true, a |
6226 | type_param_name_list. */ | |
6de9cd9a DN |
6227 | |
6228 | match | |
5bab4c96 PT |
6229 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6230 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6231 | { |
6232 | gfc_formal_arglist *head, *tail, *p, *q; | |
6233 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6234 | gfc_symbol *sym; | |
6235 | match m; | |
4668d6f9 | 6236 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6237 | |
6238 | head = tail = NULL; | |
6239 | ||
4668d6f9 PT |
6240 | /* Keep the interface formal argument list and null it so that the |
6241 | matching for the new declaration can be done. The numbers and | |
6242 | names of the arguments are checked here. The interface formal | |
6243 | arguments are retained in formal_arglist and the characteristics | |
6244 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6245 | in get_proc_name about the eventual need to copy the formal_arglist | |
6246 | and populate the formal namespace of the interface symbol. */ | |
6247 | if (progname->attr.module_procedure | |
6248 | && progname->attr.host_assoc) | |
6249 | { | |
6250 | formal = progname->formal; | |
6251 | progname->formal = NULL; | |
6252 | } | |
6253 | ||
6de9cd9a DN |
6254 | if (gfc_match_char ('(') != MATCH_YES) |
6255 | { | |
6256 | if (null_flag) | |
6257 | goto ok; | |
6258 | return MATCH_NO; | |
6259 | } | |
6260 | ||
6261 | if (gfc_match_char (')') == MATCH_YES) | |
6262 | goto ok; | |
6263 | ||
6264 | for (;;) | |
6265 | { | |
6266 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6267 | { |
6268 | sym = NULL; | |
276515e6 PT |
6269 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6270 | "Alternate-return argument at %C")) | |
9362a03b JW |
6271 | { |
6272 | m = MATCH_ERROR; | |
6273 | goto cleanup; | |
6274 | } | |
276515e6 PT |
6275 | else if (typeparam) |
6276 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6277 | } |
6de9cd9a DN |
6278 | else |
6279 | { | |
6280 | m = gfc_match_name (name); | |
6281 | if (m != MATCH_YES) | |
276515e6 PT |
6282 | { |
6283 | if(typeparam) | |
6284 | gfc_error_now ("A parameter name is required at %C"); | |
6285 | goto cleanup; | |
6286 | } | |
6de9cd9a | 6287 | |
5bab4c96 PT |
6288 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6289 | goto cleanup; | |
6290 | else if (typeparam | |
6291 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6292 | goto cleanup; |
6293 | } | |
6294 | ||
6295 | p = gfc_get_formal_arglist (); | |
6296 | ||
6297 | if (head == NULL) | |
6298 | head = tail = p; | |
6299 | else | |
6300 | { | |
6301 | tail->next = p; | |
6302 | tail = p; | |
6303 | } | |
6304 | ||
6305 | tail->sym = sym; | |
6306 | ||
6307 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6308 | dummy procedure. We don't apply these attributes to formal |
6309 | arguments of statement functions. */ | |
6de9cd9a | 6310 | if (sym != NULL && !st_flag |
524af0d6 JB |
6311 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6312 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6313 | { |
6314 | m = MATCH_ERROR; | |
6315 | goto cleanup; | |
6316 | } | |
6317 | ||
6318 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6319 | so check for it explicitly. After the statement is accepted, |
6320 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6321 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6322 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6323 | { | |
c4100eae | 6324 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6325 | sym->name); |
6326 | m = MATCH_ERROR; | |
6327 | goto cleanup; | |
6328 | } | |
6329 | ||
6330 | if (gfc_match_char (')') == MATCH_YES) | |
6331 | goto ok; | |
6332 | ||
6333 | m = gfc_match_char (','); | |
6334 | if (m != MATCH_YES) | |
6335 | { | |
de624bee PT |
6336 | if (typeparam) |
6337 | gfc_error_now ("Expected parameter list in type declaration " | |
6338 | "at %C"); | |
6339 | else | |
6340 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6341 | goto cleanup; |
6342 | } | |
6343 | } | |
6344 | ||
6345 | ok: | |
6346 | /* Check for duplicate symbols in the formal argument list. */ | |
6347 | if (head != NULL) | |
6348 | { | |
6349 | for (p = head; p->next; p = p->next) | |
6350 | { | |
6351 | if (p->sym == NULL) | |
6352 | continue; | |
6353 | ||
6354 | for (q = p->next; q; q = q->next) | |
6355 | if (p->sym == q->sym) | |
6356 | { | |
de624bee PT |
6357 | if (typeparam) |
6358 | gfc_error_now ("Duplicate name %qs in parameter " | |
6359 | "list at %C", p->sym->name); | |
6360 | else | |
6361 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6362 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6363 | |
6364 | m = MATCH_ERROR; | |
6365 | goto cleanup; | |
6366 | } | |
6367 | } | |
6368 | } | |
6369 | ||
524af0d6 | 6370 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6371 | { |
6372 | m = MATCH_ERROR; | |
6373 | goto cleanup; | |
6374 | } | |
6375 | ||
e9d9b48d PT |
6376 | /* gfc_error_now used in following and return with MATCH_YES because |
6377 | doing otherwise results in a cascade of extraneous errors and in | |
6378 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6379 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6380 | { |
0ef5fbc1 PT |
6381 | bool arg_count_mismatch = false; |
6382 | ||
6383 | if (!formal && head) | |
6384 | arg_count_mismatch = true; | |
6385 | ||
6386 | /* Abbreviated module procedure declaration is not meant to have any | |
6387 | formal arguments! */ | |
e9d9b48d | 6388 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6389 | arg_count_mismatch = true; |
6390 | ||
4668d6f9 PT |
6391 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6392 | { | |
6393 | if ((p->next != NULL && q->next == NULL) | |
6394 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6395 | arg_count_mismatch = true; |
4668d6f9 PT |
6396 | else if ((p->sym == NULL && q->sym == NULL) |
6397 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6398 | continue; | |
6399 | else | |
6400 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6401 | "argument names (%s/%s) at %C", | |
6402 | p->sym->name, q->sym->name); | |
6403 | } | |
0ef5fbc1 PT |
6404 | |
6405 | if (arg_count_mismatch) | |
6406 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6407 | "formal arguments at %C"); | |
4668d6f9 PT |
6408 | } |
6409 | ||
6de9cd9a DN |
6410 | return MATCH_YES; |
6411 | ||
6412 | cleanup: | |
6413 | gfc_free_formal_arglist (head); | |
6414 | return m; | |
6415 | } | |
6416 | ||
6417 | ||
6418 | /* Match a RESULT specification following a function declaration or | |
6419 | ENTRY statement. Also matches the end-of-statement. */ | |
6420 | ||
6421 | static match | |
66e4ab31 | 6422 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6423 | { |
6424 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6425 | gfc_symbol *r; | |
6426 | match m; | |
6427 | ||
6428 | if (gfc_match (" result (") != MATCH_YES) | |
6429 | return MATCH_NO; | |
6430 | ||
6431 | m = gfc_match_name (name); | |
6432 | if (m != MATCH_YES) | |
6433 | return m; | |
6434 | ||
a8b3b0b6 CR |
6435 | /* Get the right paren, and that's it because there could be the |
6436 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6437 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6438 | { |
a8b3b0b6 | 6439 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6440 | return MATCH_ERROR; |
6441 | } | |
6442 | ||
6443 | if (strcmp (function->name, name) == 0) | |
6444 | { | |
636dff67 | 6445 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6446 | return MATCH_ERROR; |
6447 | } | |
6448 | ||
6449 | if (gfc_get_symbol (name, NULL, &r)) | |
6450 | return MATCH_ERROR; | |
6451 | ||
524af0d6 | 6452 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6453 | return MATCH_ERROR; |
6454 | ||
6455 | *result = r; | |
6456 | ||
6457 | return MATCH_YES; | |
6458 | } | |
6459 | ||
6460 | ||
a8b3b0b6 CR |
6461 | /* Match a function suffix, which could be a combination of a result |
6462 | clause and BIND(C), either one, or neither. The draft does not | |
6463 | require them to come in a specific order. */ | |
6464 | ||
6465 | match | |
6466 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6467 | { | |
6468 | match is_bind_c; /* Found bind(c). */ | |
6469 | match is_result; /* Found result clause. */ | |
6470 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6471 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6472 | bool allow_binding_name; |
a8b3b0b6 CR |
6473 | |
6474 | /* Initialize to having found nothing. */ | |
6475 | found_match = MATCH_NO; | |
f5acf0f2 | 6476 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6477 | is_result = MATCH_NO; |
6478 | ||
6479 | /* Get the next char to narrow between result and bind(c). */ | |
6480 | gfc_gobble_whitespace (); | |
8fc541d3 | 6481 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6482 | |
1eabf70a TB |
6483 | /* C binding names are not allowed for internal procedures. */ |
6484 | if (gfc_current_state () == COMP_CONTAINS | |
6485 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6486 | allow_binding_name = false; | |
6487 | else | |
6488 | allow_binding_name = true; | |
6489 | ||
a8b3b0b6 CR |
6490 | switch (peek_char) |
6491 | { | |
6492 | case 'r': | |
6493 | /* Look for result clause. */ | |
6494 | is_result = match_result (sym, result); | |
6495 | if (is_result == MATCH_YES) | |
6496 | { | |
6497 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6498 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6499 | /* We've found the result clause and possibly bind(c). */ |
6500 | found_match = MATCH_YES; | |
6501 | } | |
6502 | else | |
6503 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6504 | found_match = is_result; |
a8b3b0b6 CR |
6505 | break; |
6506 | case 'b': | |
6507 | /* Look for bind(c) first. */ | |
1eabf70a | 6508 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6509 | if (is_bind_c == MATCH_YES) |
6510 | { | |
6511 | /* Now see if a result clause followed it. */ | |
6512 | is_result = match_result (sym, result); | |
6513 | found_match = MATCH_YES; | |
6514 | } | |
6515 | else | |
6516 | { | |
6517 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6518 | found_match = MATCH_ERROR; | |
6519 | } | |
6520 | break; | |
6521 | default: | |
6522 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6523 | found_match = MATCH_ERROR; | |
6524 | break; | |
6525 | } | |
6526 | ||
a8b3b0b6 | 6527 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6528 | { |
1eabf70a | 6529 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6530 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6531 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6532 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6533 | "at %L may not be specified for an internal " | |
6534 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6535 | return MATCH_ERROR; |
6536 | ||
524af0d6 | 6537 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6538 | return MATCH_ERROR; |
6539 | } | |
f5acf0f2 | 6540 | |
a8b3b0b6 CR |
6541 | return found_match; |
6542 | } | |
6543 | ||
6544 | ||
3070bab4 JW |
6545 | /* Procedure pointer return value without RESULT statement: |
6546 | Add "hidden" result variable named "ppr@". */ | |
6547 | ||
524af0d6 | 6548 | static bool |
3070bab4 JW |
6549 | add_hidden_procptr_result (gfc_symbol *sym) |
6550 | { | |
6551 | bool case1,case2; | |
6552 | ||
6553 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6554 | return false; |
3070bab4 JW |
6555 | |
6556 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6557 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6558 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6559 | && sym->attr.external; | |
6560 | /* Second usage case: INTERFACE statements. */ | |
6561 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6562 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6563 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6564 | ||
6565 | if (case1 || case2) | |
6566 | { | |
6567 | gfc_symtree *stree; | |
6568 | if (case1) | |
08a6b8e0 | 6569 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
5433e401 | 6570 | else |
c73b6478 JW |
6571 | { |
6572 | gfc_symtree *st2; | |
08a6b8e0 | 6573 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6574 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6575 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6576 | stree->n.sym->refs++; |
c73b6478 | 6577 | } |
3070bab4 JW |
6578 | sym->result = stree->n.sym; |
6579 | ||
6580 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6581 | sym->result->attr.pointer = sym->attr.pointer; | |
6582 | sym->result->attr.external = sym->attr.external; | |
6583 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6584 | sym->result->ts = sym->ts; |
3070bab4 JW |
6585 | sym->attr.proc_pointer = 0; |
6586 | sym->attr.pointer = 0; | |
6587 | sym->attr.external = 0; | |
6588 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6589 | { | |
6590 | sym->result->attr.pointer = 0; | |
6591 | sym->result->attr.proc_pointer = 1; | |
6592 | } | |
6593 | ||
6594 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6595 | } | |
6596 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6597 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6598 | && sym->result && sym->result != sym && sym->result->attr.external | |
6599 | && sym == gfc_current_ns->proc_name | |
6600 | && sym == sym->result->ns->proc_name | |
6601 | && strcmp ("ppr@", sym->result->name) == 0) | |
6602 | { | |
6603 | sym->result->attr.proc_pointer = 1; | |
6604 | sym->attr.pointer = 0; | |
524af0d6 | 6605 | return true; |
3070bab4 JW |
6606 | } |
6607 | else | |
524af0d6 | 6608 | return false; |
3070bab4 JW |
6609 | } |
6610 | ||
6611 | ||
713485cc JW |
6612 | /* Match the interface for a PROCEDURE declaration, |
6613 | including brackets (R1212). */ | |
69773742 JW |
6614 | |
6615 | static match | |
713485cc | 6616 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6617 | { |
6618 | match m; | |
3276e0b3 | 6619 | gfc_symtree *st; |
69773742 | 6620 | locus old_loc, entry_loc; |
3276e0b3 PT |
6621 | gfc_namespace *old_ns = gfc_current_ns; |
6622 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6623 | |
3276e0b3 | 6624 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6625 | gfc_clear_ts (¤t_ts); |
6626 | ||
6627 | if (gfc_match (" (") != MATCH_YES) | |
6628 | { | |
6629 | gfc_current_locus = entry_loc; | |
6630 | return MATCH_NO; | |
6631 | } | |
6632 | ||
6633 | /* Get the type spec. for the procedure interface. */ | |
6634 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6635 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6636 | gfc_gobble_whitespace (); |
8fc541d3 | 6637 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6638 | goto got_ts; |
6639 | ||
6640 | if (m == MATCH_ERROR) | |
6641 | return m; | |
6642 | ||
3276e0b3 | 6643 | /* Procedure interface is itself a procedure. */ |
69773742 | 6644 | gfc_current_locus = old_loc; |
3276e0b3 | 6645 | m = gfc_match_name (name); |
69773742 | 6646 | |
3276e0b3 PT |
6647 | /* First look to see if it is already accessible in the current |
6648 | namespace because it is use associated or contained. */ | |
6649 | st = NULL; | |
6650 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6651 | return MATCH_ERROR; | |
6652 | ||
6653 | /* If it is still not found, then try the parent namespace, if it | |
6654 | exists and create the symbol there if it is still not found. */ | |
6655 | if (gfc_current_ns->parent) | |
6656 | gfc_current_ns = gfc_current_ns->parent; | |
6657 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6658 | return MATCH_ERROR; | |
6659 | ||
6660 | gfc_current_ns = old_ns; | |
6661 | *proc_if = st->n.sym; | |
69773742 | 6662 | |
713485cc | 6663 | if (*proc_if) |
69773742 | 6664 | { |
713485cc | 6665 | (*proc_if)->refs++; |
bb343a6c TB |
6666 | /* Resolve interface if possible. That way, attr.procedure is only set |
6667 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6668 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6669 | while ((*proc_if)->ts.interface |
6670 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6671 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6672 | |
0e8d854e JW |
6673 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6674 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6675 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6676 | (*proc_if)->name, NULL)) |
0e8d854e | 6677 | return MATCH_ERROR; |
69773742 JW |
6678 | } |
6679 | ||
6680 | got_ts: | |
69773742 JW |
6681 | if (gfc_match (" )") != MATCH_YES) |
6682 | { | |
6683 | gfc_current_locus = entry_loc; | |
6684 | return MATCH_NO; | |
6685 | } | |
6686 | ||
713485cc JW |
6687 | return MATCH_YES; |
6688 | } | |
6689 | ||
6690 | ||
6691 | /* Match a PROCEDURE declaration (R1211). */ | |
6692 | ||
6693 | static match | |
6694 | match_procedure_decl (void) | |
6695 | { | |
6696 | match m; | |
6697 | gfc_symbol *sym, *proc_if = NULL; | |
6698 | int num; | |
6699 | gfc_expr *initializer = NULL; | |
6700 | ||
1cc0e193 | 6701 | /* Parse interface (with brackets). */ |
713485cc JW |
6702 | m = match_procedure_interface (&proc_if); |
6703 | if (m != MATCH_YES) | |
6704 | return m; | |
6705 | ||
6706 | /* Parse attributes (with colons). */ | |
69773742 JW |
6707 | m = match_attr_spec(); |
6708 | if (m == MATCH_ERROR) | |
6709 | return MATCH_ERROR; | |
6710 | ||
0859be17 TB |
6711 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6712 | { | |
6713 | current_attr.is_bind_c = 1; | |
6714 | has_name_equals = 0; | |
6715 | curr_binding_label = NULL; | |
6716 | } | |
6717 | ||
69773742 JW |
6718 | /* Get procedure symbols. */ |
6719 | for(num=1;;num++) | |
6720 | { | |
69773742 JW |
6721 | m = gfc_match_symbol (&sym, 0); |
6722 | if (m == MATCH_NO) | |
6723 | goto syntax; | |
6724 | else if (m == MATCH_ERROR) | |
6725 | return m; | |
6726 | ||
6727 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6728 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6729 | return MATCH_ERROR; |
6730 | ||
6731 | if (sym->attr.is_bind_c) | |
6732 | { | |
6733 | /* Check for C1218. */ | |
6734 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6735 | { | |
6736 | gfc_error ("BIND(C) attribute at %C requires " | |
6737 | "an interface with BIND(C)"); | |
6738 | return MATCH_ERROR; | |
6739 | } | |
6740 | /* Check for C1217. */ | |
6741 | if (has_name_equals && sym->attr.pointer) | |
6742 | { | |
6743 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6744 | "POINTER attribute at %C"); | |
6745 | return MATCH_ERROR; | |
6746 | } | |
6747 | if (has_name_equals && sym->attr.dummy) | |
6748 | { | |
6749 | gfc_error ("Dummy procedure at %C may not have " | |
6750 | "BIND(C) attribute with NAME"); | |
6751 | return MATCH_ERROR; | |
6752 | } | |
6753 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6754 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6755 | return MATCH_ERROR; |
6756 | } | |
6757 | ||
524af0d6 | 6758 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6759 | return MATCH_ERROR; |
3070bab4 | 6760 | |
524af0d6 | 6761 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6762 | sym = sym->result; |
6763 | ||
524af0d6 | 6764 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6765 | return MATCH_ERROR; |
6766 | ||
6767 | /* Set interface. */ | |
6768 | if (proc_if != NULL) | |
6cc309c9 | 6769 | { |
1d146030 JW |
6770 | if (sym->ts.type != BT_UNKNOWN) |
6771 | { | |
c4100eae | 6772 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6773 | sym->name, &gfc_current_locus, |
6774 | gfc_basic_typename (sym->ts.type)); | |
6775 | return MATCH_ERROR; | |
6776 | } | |
32d99e68 | 6777 | sym->ts.interface = proc_if; |
6cc309c9 | 6778 | sym->attr.untyped = 1; |
c73b6478 | 6779 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6780 | } |
69773742 JW |
6781 | else if (current_ts.type != BT_UNKNOWN) |
6782 | { | |
524af0d6 | 6783 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6784 | return MATCH_ERROR; |
32d99e68 JW |
6785 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6786 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6787 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6788 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6789 | sym->attr.function = 1; |
c73b6478 | 6790 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6791 | } |
6792 | ||
8fb74da4 JW |
6793 | if (gfc_match (" =>") == MATCH_YES) |
6794 | { | |
6795 | if (!current_attr.pointer) | |
6796 | { | |
6797 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6798 | m = MATCH_ERROR; | |
6799 | goto cleanup; | |
6800 | } | |
6801 | ||
80f95228 | 6802 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6803 | if (m != MATCH_YES) |
6804 | goto cleanup; | |
6805 | ||
524af0d6 | 6806 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6807 | goto cleanup; |
6808 | ||
6809 | } | |
6810 | ||
69773742 JW |
6811 | if (gfc_match_eos () == MATCH_YES) |
6812 | return MATCH_YES; | |
6813 | if (gfc_match_char (',') != MATCH_YES) | |
6814 | goto syntax; | |
6815 | } | |
6816 | ||
6817 | syntax: | |
6818 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6819 | return MATCH_ERROR; | |
8fb74da4 JW |
6820 | |
6821 | cleanup: | |
6822 | /* Free stuff up and return. */ | |
6823 | gfc_free_expr (initializer); | |
6824 | return m; | |
69773742 JW |
6825 | } |
6826 | ||
6827 | ||
713485cc JW |
6828 | static match |
6829 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6830 | ||
6831 | ||
6832 | /* Match a procedure pointer component declaration (R445). */ | |
6833 | ||
6834 | static match | |
6835 | match_ppc_decl (void) | |
6836 | { | |
6837 | match m; | |
6838 | gfc_symbol *proc_if = NULL; | |
6839 | gfc_typespec ts; | |
6840 | int num; | |
6841 | gfc_component *c; | |
6842 | gfc_expr *initializer = NULL; | |
6843 | gfc_typebound_proc* tb; | |
6844 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6845 | ||
6846 | /* Parse interface (with brackets). */ | |
6847 | m = match_procedure_interface (&proc_if); | |
6848 | if (m != MATCH_YES) | |
6849 | goto syntax; | |
6850 | ||
6851 | /* Parse attributes. */ | |
6852 | tb = XCNEW (gfc_typebound_proc); | |
6853 | tb->where = gfc_current_locus; | |
6854 | m = match_binding_attributes (tb, false, true); | |
6855 | if (m == MATCH_ERROR) | |
6856 | return m; | |
6857 | ||
713485cc JW |
6858 | gfc_clear_attr (¤t_attr); |
6859 | current_attr.procedure = 1; | |
6860 | current_attr.proc_pointer = 1; | |
6861 | current_attr.access = tb->access; | |
6862 | current_attr.flavor = FL_PROCEDURE; | |
6863 | ||
6864 | /* Match the colons (required). */ | |
6865 | if (gfc_match (" ::") != MATCH_YES) | |
6866 | { | |
a4d9b221 | 6867 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6868 | return MATCH_ERROR; |
6869 | } | |
6870 | ||
6871 | /* Check for C450. */ | |
6872 | if (!tb->nopass && proc_if == NULL) | |
6873 | { | |
6874 | gfc_error("NOPASS or explicit interface required at %C"); | |
6875 | return MATCH_ERROR; | |
6876 | } | |
6877 | ||
524af0d6 | 6878 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6879 | return MATCH_ERROR; |
6880 | ||
713485cc JW |
6881 | /* Match PPC names. */ |
6882 | ts = current_ts; | |
6883 | for(num=1;;num++) | |
6884 | { | |
6885 | m = gfc_match_name (name); | |
6886 | if (m == MATCH_NO) | |
6887 | goto syntax; | |
6888 | else if (m == MATCH_ERROR) | |
6889 | return m; | |
6890 | ||
524af0d6 | 6891 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6892 | return MATCH_ERROR; |
6893 | ||
6894 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6895 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6896 | return MATCH_ERROR; |
6897 | ||
524af0d6 | 6898 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6899 | return MATCH_ERROR; |
6900 | ||
524af0d6 | 6901 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6902 | return MATCH_ERROR; |
6903 | ||
2be03814 TB |
6904 | if (num == 1) |
6905 | c->tb = tb; | |
6906 | else | |
6907 | { | |
6908 | c->tb = XCNEW (gfc_typebound_proc); | |
6909 | c->tb->where = gfc_current_locus; | |
6910 | *c->tb = *tb; | |
6911 | } | |
90661f26 | 6912 | |
713485cc JW |
6913 | /* Set interface. */ |
6914 | if (proc_if != NULL) | |
6915 | { | |
6916 | c->ts.interface = proc_if; | |
6917 | c->attr.untyped = 1; | |
6918 | c->attr.if_source = IFSRC_IFBODY; | |
6919 | } | |
6920 | else if (ts.type != BT_UNKNOWN) | |
6921 | { | |
6922 | c->ts = ts; | |
6923 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 6924 | c->ts.interface->result = c->ts.interface; |
713485cc | 6925 | c->ts.interface->ts = ts; |
d91909c0 | 6926 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 6927 | c->ts.interface->attr.function = 1; |
d91909c0 | 6928 | c->attr.function = 1; |
713485cc JW |
6929 | c->attr.if_source = IFSRC_UNKNOWN; |
6930 | } | |
6931 | ||
6932 | if (gfc_match (" =>") == MATCH_YES) | |
6933 | { | |
80f95228 | 6934 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
6935 | if (m != MATCH_YES) |
6936 | { | |
6937 | gfc_free_expr (initializer); | |
6938 | return m; | |
6939 | } | |
6940 | c->initializer = initializer; | |
6941 | } | |
6942 | ||
6943 | if (gfc_match_eos () == MATCH_YES) | |
6944 | return MATCH_YES; | |
6945 | if (gfc_match_char (',') != MATCH_YES) | |
6946 | goto syntax; | |
6947 | } | |
6948 | ||
6949 | syntax: | |
6950 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6951 | return MATCH_ERROR; | |
6952 | } | |
6953 | ||
6954 | ||
69773742 JW |
6955 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6956 | ||
6957 | static match | |
6958 | match_procedure_in_interface (void) | |
6959 | { | |
6960 | match m; | |
6961 | gfc_symbol *sym; | |
6962 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 6963 | locus old_locus; |
69773742 JW |
6964 | |
6965 | if (current_interface.type == INTERFACE_NAMELESS | |
6966 | || current_interface.type == INTERFACE_ABSTRACT) | |
6967 | { | |
6968 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6969 | return MATCH_ERROR; | |
6970 | } | |
6971 | ||
a6fcd41a TB |
6972 | /* Check if the F2008 optional double colon appears. */ |
6973 | gfc_gobble_whitespace (); | |
6974 | old_locus = gfc_current_locus; | |
6975 | if (gfc_match ("::") == MATCH_YES) | |
6976 | { | |
524af0d6 JB |
6977 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6978 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
6979 | return MATCH_ERROR; |
6980 | } | |
6981 | else | |
6982 | gfc_current_locus = old_locus; | |
6983 | ||
69773742 JW |
6984 | for(;;) |
6985 | { | |
6986 | m = gfc_match_name (name); | |
6987 | if (m == MATCH_NO) | |
6988 | goto syntax; | |
6989 | else if (m == MATCH_ERROR) | |
6990 | return m; | |
6991 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6992 | return MATCH_ERROR; | |
6993 | ||
524af0d6 | 6994 | if (!gfc_add_interface (sym)) |
69773742 JW |
6995 | return MATCH_ERROR; |
6996 | ||
69773742 JW |
6997 | if (gfc_match_eos () == MATCH_YES) |
6998 | break; | |
6999 | if (gfc_match_char (',') != MATCH_YES) | |
7000 | goto syntax; | |
7001 | } | |
7002 | ||
7003 | return MATCH_YES; | |
7004 | ||
7005 | syntax: | |
7006 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7007 | return MATCH_ERROR; | |
7008 | } | |
7009 | ||
7010 | ||
7011 | /* General matcher for PROCEDURE declarations. */ | |
7012 | ||
30b608eb DK |
7013 | static match match_procedure_in_type (void); |
7014 | ||
69773742 JW |
7015 | match |
7016 | gfc_match_procedure (void) | |
7017 | { | |
7018 | match m; | |
7019 | ||
7020 | switch (gfc_current_state ()) | |
7021 | { | |
7022 | case COMP_NONE: | |
7023 | case COMP_PROGRAM: | |
7024 | case COMP_MODULE: | |
4668d6f9 | 7025 | case COMP_SUBMODULE: |
69773742 JW |
7026 | case COMP_SUBROUTINE: |
7027 | case COMP_FUNCTION: | |
3547d57e | 7028 | case COMP_BLOCK: |
69773742 JW |
7029 | m = match_procedure_decl (); |
7030 | break; | |
7031 | case COMP_INTERFACE: | |
7032 | m = match_procedure_in_interface (); | |
7033 | break; | |
7034 | case COMP_DERIVED: | |
713485cc JW |
7035 | m = match_ppc_decl (); |
7036 | break; | |
30b608eb DK |
7037 | case COMP_DERIVED_CONTAINS: |
7038 | m = match_procedure_in_type (); | |
7039 | break; | |
69773742 JW |
7040 | default: |
7041 | return MATCH_NO; | |
7042 | } | |
7043 | ||
7044 | if (m != MATCH_YES) | |
7045 | return m; | |
7046 | ||
524af0d6 | 7047 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
7048 | return MATCH_ERROR; |
7049 | ||
7050 | return m; | |
7051 | } | |
7052 | ||
7053 | ||
c3005b0f DK |
7054 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7055 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7056 | parser-state-stack to find out whether we're in a module. */ | |
7057 | ||
7058 | static void | |
73e42eef | 7059 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
7060 | { |
7061 | bool in_module; | |
7062 | ||
7063 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
7064 | && (gfc_state_stack->previous->state == COMP_MODULE |
7065 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
7066 | |
7067 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7068 | } | |
7069 | ||
7070 | ||
6de9cd9a DN |
7071 | /* Match a function declaration. */ |
7072 | ||
7073 | match | |
7074 | gfc_match_function_decl (void) | |
7075 | { | |
7076 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7077 | gfc_symbol *sym, *result; | |
7078 | locus old_loc; | |
7079 | match m; | |
a8b3b0b6 | 7080 | match suffix_match; |
f5acf0f2 | 7081 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
7082 | |
7083 | if (gfc_current_state () != COMP_NONE | |
7084 | && gfc_current_state () != COMP_INTERFACE | |
7085 | && gfc_current_state () != COMP_CONTAINS) | |
7086 | return MATCH_NO; | |
7087 | ||
7088 | gfc_clear_ts (¤t_ts); | |
7089 | ||
63645982 | 7090 | old_loc = gfc_current_locus; |
6de9cd9a | 7091 | |
1c8bcdf7 | 7092 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
7093 | if (m != MATCH_YES) |
7094 | { | |
63645982 | 7095 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7096 | return m; |
7097 | } | |
7098 | ||
7099 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7100 | { | |
63645982 | 7101 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7102 | return MATCH_NO; |
7103 | } | |
4668d6f9 | 7104 | |
1a492601 | 7105 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7106 | return MATCH_ERROR; |
3070bab4 | 7107 | |
524af0d6 | 7108 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7109 | sym = sym->result; |
7110 | ||
4668d6f9 PT |
7111 | if (current_attr.module_procedure) |
7112 | sym->attr.module_procedure = 1; | |
7113 | ||
6de9cd9a DN |
7114 | gfc_new_block = sym; |
7115 | ||
7116 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7117 | if (m == MATCH_NO) | |
2b9a33ae TS |
7118 | { |
7119 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 7120 | "definition at %C"); |
2b9a33ae TS |
7121 | m = MATCH_ERROR; |
7122 | goto cleanup; | |
7123 | } | |
6de9cd9a DN |
7124 | else if (m == MATCH_ERROR) |
7125 | goto cleanup; | |
7126 | ||
7127 | result = NULL; | |
7128 | ||
a8b3b0b6 CR |
7129 | /* According to the draft, the bind(c) and result clause can |
7130 | come in either order after the formal_arg_list (i.e., either | |
7131 | can be first, both can exist together or by themselves or neither | |
7132 | one). Therefore, the match_result can't match the end of the | |
7133 | string, and check for the bind(c) or result clause in either order. */ | |
7134 | found_match = gfc_match_eos (); | |
7135 | ||
7136 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7137 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7138 | not allowed for procedures. */ | |
7139 | if (sym->attr.is_bind_c == 1) | |
7140 | { | |
7141 | sym->attr.is_bind_c = 0; | |
7142 | if (sym->old_symbol != NULL) | |
7143 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7144 | "variables or common blocks", | |
7145 | &(sym->old_symbol->declared_at)); | |
7146 | else | |
7147 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7148 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
7149 | } |
7150 | ||
a8b3b0b6 | 7151 | if (found_match != MATCH_YES) |
6de9cd9a | 7152 | { |
a8b3b0b6 CR |
7153 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7154 | suffix_match = gfc_match_suffix (sym, &result); | |
7155 | if (suffix_match == MATCH_YES) | |
7156 | /* Need to get the eos now. */ | |
7157 | found_match = gfc_match_eos (); | |
7158 | else | |
7159 | found_match = suffix_match; | |
6de9cd9a DN |
7160 | } |
7161 | ||
a8b3b0b6 CR |
7162 | if(found_match != MATCH_YES) |
7163 | m = MATCH_ERROR; | |
6de9cd9a DN |
7164 | else |
7165 | { | |
a8b3b0b6 CR |
7166 | /* Make changes to the symbol. */ |
7167 | m = MATCH_ERROR; | |
f5acf0f2 | 7168 | |
524af0d6 | 7169 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 7170 | goto cleanup; |
f5acf0f2 | 7171 | |
70112e2a | 7172 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 7173 | goto cleanup; |
6de9cd9a | 7174 | |
70112e2a PT |
7175 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7176 | { | |
7177 | if(!sym->attr.module_procedure) | |
7178 | goto cleanup; | |
7179 | else | |
7180 | gfc_error_check (); | |
7181 | } | |
7182 | ||
a99d95a2 | 7183 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 7184 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
7185 | sym->declared_at = old_loc; |
7186 | if (current_ts.type != BT_UNKNOWN) | |
7187 | current_ts.kind = -1; | |
7188 | else | |
7189 | current_ts.kind = 0; | |
1c8bcdf7 | 7190 | |
a8b3b0b6 CR |
7191 | if (result == NULL) |
7192 | { | |
6de7294f | 7193 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7194 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7195 | goto cleanup; |
a8b3b0b6 CR |
7196 | sym->result = sym; |
7197 | } | |
7198 | else | |
7199 | { | |
6de7294f | 7200 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7201 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7202 | goto cleanup; |
a8b3b0b6 CR |
7203 | sym->result = result; |
7204 | } | |
7205 | ||
c3005b0f | 7206 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 7207 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 7208 | |
a8b3b0b6 CR |
7209 | return MATCH_YES; |
7210 | } | |
6de9cd9a DN |
7211 | |
7212 | cleanup: | |
63645982 | 7213 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7214 | return m; |
7215 | } | |
7216 | ||
636dff67 SK |
7217 | |
7218 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7219 | pass the name of the entry, rather than the gfc_current_block name, and | |
7220 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7221 | |
7222 | static bool | |
3a43b5b3 TB |
7223 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7224 | locus *where) | |
68ea355b PT |
7225 | { |
7226 | gfc_gsymbol *s; | |
32e8bb8e | 7227 | enum gfc_symbol_type type; |
68ea355b | 7228 | |
7389bce6 | 7229 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7230 | |
f11de7c5 TB |
7231 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7232 | name is a global identifier. */ | |
7233 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7234 | { |
f11de7c5 TB |
7235 | s = gfc_get_gsymbol (name); |
7236 | ||
7237 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7238 | { | |
3a43b5b3 | 7239 | gfc_global_used (s, where); |
f11de7c5 TB |
7240 | return false; |
7241 | } | |
7242 | else | |
7243 | { | |
7244 | s->type = type; | |
77f8682b | 7245 | s->sym_name = name; |
3a43b5b3 | 7246 | s->where = *where; |
f11de7c5 TB |
7247 | s->defined = 1; |
7248 | s->ns = gfc_current_ns; | |
7249 | } | |
68ea355b | 7250 | } |
f11de7c5 TB |
7251 | |
7252 | /* Don't add the symbol multiple times. */ | |
7253 | if (binding_label | |
7254 | && (!gfc_notification_std (GFC_STD_F2008) | |
7255 | || strcmp (name, binding_label) != 0)) | |
7256 | { | |
7257 | s = gfc_get_gsymbol (binding_label); | |
7258 | ||
7259 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7260 | { | |
3a43b5b3 | 7261 | gfc_global_used (s, where); |
f11de7c5 TB |
7262 | return false; |
7263 | } | |
7264 | else | |
7265 | { | |
7266 | s->type = type; | |
77f8682b | 7267 | s->sym_name = name; |
f11de7c5 | 7268 | s->binding_label = binding_label; |
3a43b5b3 | 7269 | s->where = *where; |
f11de7c5 TB |
7270 | s->defined = 1; |
7271 | s->ns = gfc_current_ns; | |
7272 | } | |
7273 | } | |
7274 | ||
7275 | return true; | |
68ea355b | 7276 | } |
6de9cd9a | 7277 | |
636dff67 | 7278 | |
6de9cd9a DN |
7279 | /* Match an ENTRY statement. */ |
7280 | ||
7281 | match | |
7282 | gfc_match_entry (void) | |
7283 | { | |
3d79abbd PB |
7284 | gfc_symbol *proc; |
7285 | gfc_symbol *result; | |
7286 | gfc_symbol *entry; | |
6de9cd9a DN |
7287 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7288 | gfc_compile_state state; | |
7289 | match m; | |
3d79abbd | 7290 | gfc_entry_list *el; |
c96cfa49 | 7291 | locus old_loc; |
1a492601 | 7292 | bool module_procedure; |
bc3e7a8c TB |
7293 | char peek_char; |
7294 | match is_bind_c; | |
6de9cd9a DN |
7295 | |
7296 | m = gfc_match_name (name); | |
7297 | if (m != MATCH_YES) | |
7298 | return m; | |
7299 | ||
524af0d6 | 7300 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7301 | return MATCH_ERROR; |
7302 | ||
3d79abbd | 7303 | state = gfc_current_state (); |
4c93c95a | 7304 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7305 | { |
4c93c95a FXC |
7306 | switch (state) |
7307 | { | |
7308 | case COMP_PROGRAM: | |
7309 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7310 | break; | |
7311 | case COMP_MODULE: | |
7312 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7313 | break; | |
4668d6f9 PT |
7314 | case COMP_SUBMODULE: |
7315 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7316 | break; | |
4c93c95a | 7317 | case COMP_BLOCK_DATA: |
636dff67 SK |
7318 | gfc_error ("ENTRY statement at %C cannot appear within " |
7319 | "a BLOCK DATA"); | |
4c93c95a FXC |
7320 | break; |
7321 | case COMP_INTERFACE: | |
636dff67 SK |
7322 | gfc_error ("ENTRY statement at %C cannot appear within " |
7323 | "an INTERFACE"); | |
4c93c95a | 7324 | break; |
f6288c24 FR |
7325 | case COMP_STRUCTURE: |
7326 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7327 | "a STRUCTURE block"); | |
7328 | break; | |
4c93c95a | 7329 | case COMP_DERIVED: |
636dff67 SK |
7330 | gfc_error ("ENTRY statement at %C cannot appear within " |
7331 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7332 | break; |
7333 | case COMP_IF: | |
636dff67 SK |
7334 | gfc_error ("ENTRY statement at %C cannot appear within " |
7335 | "an IF-THEN block"); | |
4c93c95a FXC |
7336 | break; |
7337 | case COMP_DO: | |
8c6a85e3 | 7338 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7339 | gfc_error ("ENTRY statement at %C cannot appear within " |
7340 | "a DO block"); | |
4c93c95a FXC |
7341 | break; |
7342 | case COMP_SELECT: | |
636dff67 SK |
7343 | gfc_error ("ENTRY statement at %C cannot appear within " |
7344 | "a SELECT block"); | |
4c93c95a FXC |
7345 | break; |
7346 | case COMP_FORALL: | |
636dff67 SK |
7347 | gfc_error ("ENTRY statement at %C cannot appear within " |
7348 | "a FORALL block"); | |
4c93c95a FXC |
7349 | break; |
7350 | case COMP_WHERE: | |
636dff67 SK |
7351 | gfc_error ("ENTRY statement at %C cannot appear within " |
7352 | "a WHERE block"); | |
4c93c95a FXC |
7353 | break; |
7354 | case COMP_CONTAINS: | |
636dff67 SK |
7355 | gfc_error ("ENTRY statement at %C cannot appear within " |
7356 | "a contained subprogram"); | |
4c93c95a FXC |
7357 | break; |
7358 | default: | |
fce523bf | 7359 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7360 | } |
3d79abbd PB |
7361 | return MATCH_ERROR; |
7362 | } | |
7363 | ||
5f0ba745 SK |
7364 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7365 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7366 | { | |
7367 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7368 | return MATCH_ERROR; | |
7369 | } | |
7370 | ||
1a492601 | 7371 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7372 | && gfc_current_ns->parent->proc_name |
7373 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7374 | == FL_MODULE; | |
1a492601 | 7375 | |
3d79abbd PB |
7376 | if (gfc_current_ns->parent != NULL |
7377 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7378 | && !module_procedure) |
3d79abbd PB |
7379 | { |
7380 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7381 | "contained procedure"); | |
7382 | return MATCH_ERROR; | |
7383 | } | |
7384 | ||
1a492601 PT |
7385 | /* Module function entries need special care in get_proc_name |
7386 | because previous references within the function will have | |
7387 | created symbols attached to the current namespace. */ | |
7388 | if (get_proc_name (name, &entry, | |
7389 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7390 | && module_procedure)) |
6de9cd9a DN |
7391 | return MATCH_ERROR; |
7392 | ||
3d79abbd PB |
7393 | proc = gfc_current_block (); |
7394 | ||
bc3e7a8c TB |
7395 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7396 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7397 | not allowed for procedures. */ | |
7398 | if (entry->attr.is_bind_c == 1) | |
7399 | { | |
7400 | entry->attr.is_bind_c = 0; | |
7401 | if (entry->old_symbol != NULL) | |
7402 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7403 | "variables or common blocks", | |
7404 | &(entry->old_symbol->declared_at)); | |
7405 | else | |
7406 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7407 | "variables or common blocks", &gfc_current_locus); | |
7408 | } | |
f5acf0f2 | 7409 | |
bc3e7a8c TB |
7410 | /* Check what next non-whitespace character is so we can tell if there |
7411 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7412 | old_loc = gfc_current_locus; |
bc3e7a8c | 7413 | gfc_gobble_whitespace (); |
8fc541d3 | 7414 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7415 | |
3d79abbd | 7416 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7417 | { |
6de9cd9a DN |
7418 | m = gfc_match_formal_arglist (entry, 0, 1); |
7419 | if (m != MATCH_YES) | |
7420 | return MATCH_ERROR; | |
7421 | ||
1eabf70a TB |
7422 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7423 | never be an internal procedure. */ | |
7424 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7425 | if (is_bind_c == MATCH_ERROR) |
7426 | return MATCH_ERROR; | |
7427 | if (is_bind_c == MATCH_YES) | |
7428 | { | |
7429 | if (peek_char != '(') | |
7430 | { | |
7431 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7432 | return MATCH_ERROR; | |
7433 | } | |
70112e2a | 7434 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 7435 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
7436 | return MATCH_ERROR; |
7437 | } | |
7438 | ||
f11de7c5 | 7439 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7440 | && !add_global_entry (name, entry->binding_label, true, |
7441 | &old_loc)) | |
f11de7c5 TB |
7442 | return MATCH_ERROR; |
7443 | ||
7444 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7445 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7446 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7447 | return MATCH_ERROR; |
3d79abbd PB |
7448 | } |
7449 | else | |
7450 | { | |
c96cfa49 | 7451 | /* An entry in a function. |
636dff67 SK |
7452 | We need to take special care because writing |
7453 | ENTRY f() | |
7454 | as | |
7455 | ENTRY f | |
7456 | is allowed, whereas | |
7457 | ENTRY f() RESULT (r) | |
7458 | can't be written as | |
7459 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7460 | if (gfc_match_eos () == MATCH_YES) |
7461 | { | |
7462 | gfc_current_locus = old_loc; | |
7463 | /* Match the empty argument list, and add the interface to | |
7464 | the symbol. */ | |
7465 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7466 | } | |
7467 | else | |
7468 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7469 | ||
6de9cd9a DN |
7470 | if (m != MATCH_YES) |
7471 | return MATCH_ERROR; | |
7472 | ||
6de9cd9a DN |
7473 | result = NULL; |
7474 | ||
7475 | if (gfc_match_eos () == MATCH_YES) | |
7476 | { | |
524af0d6 JB |
7477 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7478 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7479 | return MATCH_ERROR; |
7480 | ||
d198b59a | 7481 | entry->result = entry; |
6de9cd9a DN |
7482 | } |
7483 | else | |
7484 | { | |
bc3e7a8c | 7485 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7486 | if (m == MATCH_NO) |
7487 | gfc_syntax_error (ST_ENTRY); | |
7488 | if (m != MATCH_YES) | |
7489 | return MATCH_ERROR; | |
7490 | ||
bc3e7a8c TB |
7491 | if (result) |
7492 | { | |
524af0d6 JB |
7493 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7494 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7495 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7496 | return MATCH_ERROR; |
7497 | entry->result = result; | |
7498 | } | |
7499 | else | |
7500 | { | |
524af0d6 JB |
7501 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7502 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7503 | return MATCH_ERROR; |
7504 | entry->result = entry; | |
7505 | } | |
6de9cd9a | 7506 | } |
f11de7c5 TB |
7507 | |
7508 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7509 | && !add_global_entry (name, entry->binding_label, false, |
7510 | &old_loc)) | |
f11de7c5 | 7511 | return MATCH_ERROR; |
6de9cd9a DN |
7512 | } |
7513 | ||
7514 | if (gfc_match_eos () != MATCH_YES) | |
7515 | { | |
7516 | gfc_syntax_error (ST_ENTRY); | |
7517 | return MATCH_ERROR; | |
7518 | } | |
7519 | ||
3d79abbd PB |
7520 | entry->attr.recursive = proc->attr.recursive; |
7521 | entry->attr.elemental = proc->attr.elemental; | |
7522 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7523 | |
3d79abbd PB |
7524 | el = gfc_get_entry_list (); |
7525 | el->sym = entry; | |
7526 | el->next = gfc_current_ns->entries; | |
7527 | gfc_current_ns->entries = el; | |
7528 | if (el->next) | |
7529 | el->id = el->next->id + 1; | |
7530 | else | |
7531 | el->id = 1; | |
6de9cd9a | 7532 | |
3d79abbd PB |
7533 | new_st.op = EXEC_ENTRY; |
7534 | new_st.ext.entry = el; | |
7535 | ||
7536 | return MATCH_YES; | |
6de9cd9a DN |
7537 | } |
7538 | ||
7539 | ||
7540 | /* Match a subroutine statement, including optional prefixes. */ | |
7541 | ||
7542 | match | |
7543 | gfc_match_subroutine (void) | |
7544 | { | |
7545 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7546 | gfc_symbol *sym; | |
7547 | match m; | |
a8b3b0b6 CR |
7548 | match is_bind_c; |
7549 | char peek_char; | |
1eabf70a | 7550 | bool allow_binding_name; |
6de9cd9a DN |
7551 | |
7552 | if (gfc_current_state () != COMP_NONE | |
7553 | && gfc_current_state () != COMP_INTERFACE | |
7554 | && gfc_current_state () != COMP_CONTAINS) | |
7555 | return MATCH_NO; | |
7556 | ||
1c8bcdf7 | 7557 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7558 | if (m != MATCH_YES) |
7559 | return m; | |
7560 | ||
7561 | m = gfc_match ("subroutine% %n", name); | |
7562 | if (m != MATCH_YES) | |
7563 | return m; | |
7564 | ||
1a492601 | 7565 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7566 | return MATCH_ERROR; |
3070bab4 | 7567 | |
7fcd5ad5 | 7568 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7569 | the symbol existed before. */ |
7fcd5ad5 TB |
7570 | sym->declared_at = gfc_current_locus; |
7571 | ||
4668d6f9 PT |
7572 | if (current_attr.module_procedure) |
7573 | sym->attr.module_procedure = 1; | |
7574 | ||
524af0d6 | 7575 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7576 | sym = sym->result; |
7577 | ||
6de9cd9a DN |
7578 | gfc_new_block = sym; |
7579 | ||
a8b3b0b6 | 7580 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7581 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7582 | gfc_gobble_whitespace (); |
8fc541d3 | 7583 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7584 | |
524af0d6 | 7585 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7586 | return MATCH_ERROR; |
7587 | ||
7588 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7589 | return MATCH_ERROR; | |
7590 | ||
a8b3b0b6 CR |
7591 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7592 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7593 | not allowed for procedures. */ | |
7594 | if (sym->attr.is_bind_c == 1) | |
7595 | { | |
7596 | sym->attr.is_bind_c = 0; | |
7597 | if (sym->old_symbol != NULL) | |
7598 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7599 | "variables or common blocks", | |
7600 | &(sym->old_symbol->declared_at)); | |
7601 | else | |
7602 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7603 | "variables or common blocks", &gfc_current_locus); | |
7604 | } | |
1eabf70a TB |
7605 | |
7606 | /* C binding names are not allowed for internal procedures. */ | |
7607 | if (gfc_current_state () == COMP_CONTAINS | |
7608 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7609 | allow_binding_name = false; | |
7610 | else | |
7611 | allow_binding_name = true; | |
7612 | ||
a8b3b0b6 CR |
7613 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7614 | so, then we need to make sure it's all correct. If it doesn't, | |
7615 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 7616 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7617 | if (is_bind_c == MATCH_ERROR) |
7618 | { | |
7619 | /* There was an attempt at the bind(c), but it was wrong. An | |
7620 | error message should have been printed w/in the gfc_match_bind_c | |
7621 | so here we'll just return the MATCH_ERROR. */ | |
7622 | return MATCH_ERROR; | |
7623 | } | |
7624 | ||
7625 | if (is_bind_c == MATCH_YES) | |
7626 | { | |
1eabf70a | 7627 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7628 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7629 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7630 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7631 | "at %L may not be specified for an internal " | |
7632 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7633 | return MATCH_ERROR; |
7634 | ||
a8b3b0b6 CR |
7635 | if (peek_char != '(') |
7636 | { | |
7637 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7638 | return MATCH_ERROR; | |
7639 | } | |
70112e2a | 7640 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 7641 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
7642 | return MATCH_ERROR; |
7643 | } | |
f5acf0f2 | 7644 | |
6de9cd9a DN |
7645 | if (gfc_match_eos () != MATCH_YES) |
7646 | { | |
7647 | gfc_syntax_error (ST_SUBROUTINE); | |
7648 | return MATCH_ERROR; | |
7649 | } | |
7650 | ||
524af0d6 | 7651 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7652 | { |
7653 | if(!sym->attr.module_procedure) | |
7654 | return MATCH_ERROR; | |
7655 | else | |
7656 | gfc_error_check (); | |
7657 | } | |
6de9cd9a | 7658 | |
c3005b0f | 7659 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7660 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7661 | |
6de9cd9a DN |
7662 | return MATCH_YES; |
7663 | } | |
7664 | ||
7665 | ||
3b37ccd4 FXC |
7666 | /* Check that the NAME identifier in a BIND attribute or statement |
7667 | is conform to C identifier rules. */ | |
7668 | ||
7669 | match | |
7670 | check_bind_name_identifier (char **name) | |
7671 | { | |
7672 | char *n = *name, *p; | |
7673 | ||
7674 | /* Remove leading spaces. */ | |
7675 | while (*n == ' ') | |
7676 | n++; | |
7677 | ||
7678 | /* On an empty string, free memory and set name to NULL. */ | |
7679 | if (*n == '\0') | |
7680 | { | |
7681 | free (*name); | |
7682 | *name = NULL; | |
7683 | return MATCH_YES; | |
7684 | } | |
7685 | ||
7686 | /* Remove trailing spaces. */ | |
7687 | p = n + strlen(n) - 1; | |
7688 | while (*p == ' ') | |
7689 | *(p--) = '\0'; | |
7690 | ||
7691 | /* Insert the identifier into the symbol table. */ | |
7692 | p = xstrdup (n); | |
7693 | free (*name); | |
7694 | *name = p; | |
7695 | ||
7696 | /* Now check that identifier is valid under C rules. */ | |
7697 | if (ISDIGIT (*p)) | |
7698 | { | |
7699 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7700 | return MATCH_ERROR; | |
7701 | } | |
7702 | ||
7703 | for (; *p; p++) | |
7704 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7705 | { | |
7706 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7707 | return MATCH_ERROR; | |
7708 | } | |
7709 | ||
7710 | return MATCH_YES; | |
7711 | } | |
7712 | ||
7713 | ||
a8b3b0b6 CR |
7714 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7715 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7716 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7717 | encounter the BIND(C) before the declaration itself. Return |
7718 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7719 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7720 | or MATCH_YES if the specifier was correct and the binding label and | |
7721 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7722 | current_ts. If allow_binding_name is false, no binding name may be |
7723 | given. */ | |
a8b3b0b6 CR |
7724 | |
7725 | match | |
1eabf70a | 7726 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7727 | { |
3b37ccd4 FXC |
7728 | char *binding_label = NULL; |
7729 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7730 | |
f5acf0f2 | 7731 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7732 | specifier or not. */ |
7733 | has_name_equals = 0; | |
7734 | ||
a8b3b0b6 CR |
7735 | /* This much we have to be able to match, in this order, if |
7736 | there is a bind(c) label. */ | |
7737 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7738 | return MATCH_NO; | |
7739 | ||
7740 | /* Now see if there is a binding label, or if we've reached the | |
7741 | end of the bind(c) attribute without one. */ | |
7742 | if (gfc_match_char (',') == MATCH_YES) | |
7743 | { | |
7744 | if (gfc_match (" name = ") != MATCH_YES) | |
7745 | { | |
7746 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7747 | "at %C"); | |
7748 | /* should give an error message here */ | |
7749 | return MATCH_ERROR; | |
7750 | } | |
7751 | ||
7752 | has_name_equals = 1; | |
7753 | ||
3b37ccd4 FXC |
7754 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7755 | { | |
7756 | gfc_free_expr (e); | |
7757 | return MATCH_ERROR; | |
7758 | } | |
f5acf0f2 | 7759 | |
3b37ccd4 | 7760 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7761 | { |
3b37ccd4 FXC |
7762 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7763 | gfc_free_expr (e); | |
7764 | return MATCH_ERROR; | |
a8b3b0b6 | 7765 | } |
3b37ccd4 FXC |
7766 | |
7767 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7768 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7769 | { |
3b37ccd4 FXC |
7770 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7771 | "default character kind"); | |
7772 | gfc_free_expr(e); | |
7773 | return MATCH_ERROR; | |
a8b3b0b6 | 7774 | } |
3b37ccd4 FXC |
7775 | |
7776 | // Get a C string from the Fortran string constant | |
7777 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7778 | e->value.character.length); | |
7779 | gfc_free_expr(e); | |
7780 | ||
7781 | // Check that it is valid (old gfc_match_name_C) | |
7782 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7783 | return MATCH_ERROR; | |
7784 | } | |
a8b3b0b6 CR |
7785 | |
7786 | /* Get the required right paren. */ | |
7787 | if (gfc_match_char (')') != MATCH_YES) | |
7788 | { | |
7789 | gfc_error ("Missing closing paren for binding label at %C"); | |
7790 | return MATCH_ERROR; | |
7791 | } | |
7792 | ||
1eabf70a TB |
7793 | if (has_name_equals && !allow_binding_name) |
7794 | { | |
7795 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7796 | return MATCH_ERROR; | |
7797 | } | |
7798 | ||
7799 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7800 | { | |
7801 | gfc_error ("For dummy procedure %s, no binding name is " | |
7802 | "allowed in BIND(C) at %C", sym->name); | |
7803 | return MATCH_ERROR; | |
7804 | } | |
7805 | ||
7806 | ||
a8b3b0b6 CR |
7807 | /* Save the binding label to the symbol. If sym is null, we're |
7808 | probably matching the typespec attributes of a declaration and | |
7809 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7810 | if (binding_label) |
a8b3b0b6 CR |
7811 | { |
7812 | if (sym != NULL) | |
62603fae | 7813 | sym->binding_label = binding_label; |
a8b3b0b6 | 7814 | else |
62603fae | 7815 | curr_binding_label = binding_label; |
a8b3b0b6 | 7816 | } |
1eabf70a | 7817 | else if (allow_binding_name) |
a8b3b0b6 CR |
7818 | { |
7819 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7820 | can set the label for it here. |
7821 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7822 | created. */ |
a8b3b0b6 | 7823 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7824 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7825 | } |
9e1d712c | 7826 | |
129d15a3 JW |
7827 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7828 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7829 | { |
7830 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7831 | return MATCH_ERROR; | |
7832 | } | |
7833 | ||
a8b3b0b6 CR |
7834 | return MATCH_YES; |
7835 | } | |
7836 | ||
7837 | ||
1f2959f0 | 7838 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7839 | |
7840 | static int | |
7841 | contained_procedure (void) | |
7842 | { | |
083de129 | 7843 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7844 | |
083de129 TB |
7845 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7846 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7847 | return 1; | |
ddc9ce91 TS |
7848 | |
7849 | return 0; | |
7850 | } | |
7851 | ||
d51347f9 | 7852 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7853 | interoperable with the corresponding C enumeration type, making |
7854 | sure that -fshort-enums is honored. */ | |
7855 | ||
7856 | static void | |
7857 | set_enum_kind(void) | |
7858 | { | |
7859 | enumerator_history *current_history = NULL; | |
7860 | int kind; | |
7861 | int i; | |
7862 | ||
7863 | if (max_enum == NULL || enum_history == NULL) | |
7864 | return; | |
7865 | ||
cab129d1 | 7866 | if (!flag_short_enums) |
d51347f9 TB |
7867 | return; |
7868 | ||
25d8f0a2 TS |
7869 | i = 0; |
7870 | do | |
7871 | { | |
7872 | kind = gfc_integer_kinds[i++].kind; | |
7873 | } | |
d51347f9 | 7874 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7875 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7876 | kind) != ARITH_OK); | |
7877 | ||
7878 | current_history = enum_history; | |
7879 | while (current_history != NULL) | |
7880 | { | |
7881 | current_history->sym->ts.kind = kind; | |
7882 | current_history = current_history->next; | |
7883 | } | |
7884 | } | |
7885 | ||
636dff67 | 7886 | |
6de9cd9a | 7887 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
7888 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7889 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
7890 | |
7891 | match | |
636dff67 | 7892 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
7893 | { |
7894 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7895 | gfc_compile_state state; | |
7896 | locus old_loc; | |
7897 | const char *block_name; | |
7898 | const char *target; | |
ddc9ce91 | 7899 | int eos_ok; |
6de9cd9a | 7900 | match m; |
0cab6b73 TK |
7901 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7902 | gfc_namespace **nsp; | |
63af1586 | 7903 | bool abreviated_modproc_decl = false; |
874108a9 | 7904 | bool got_matching_end = false; |
6de9cd9a | 7905 | |
63645982 | 7906 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7907 | if (gfc_match ("end") != MATCH_YES) |
7908 | return MATCH_NO; | |
7909 | ||
7910 | state = gfc_current_state (); | |
636dff67 SK |
7911 | block_name = gfc_current_block () == NULL |
7912 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 7913 | |
03af1e4c | 7914 | switch (state) |
6de9cd9a | 7915 | { |
03af1e4c DK |
7916 | case COMP_ASSOCIATE: |
7917 | case COMP_BLOCK: | |
2eb3745a | 7918 | if (gfc_str_startswith (block_name, "block@")) |
03af1e4c DK |
7919 | block_name = NULL; |
7920 | break; | |
7921 | ||
7922 | case COMP_CONTAINS: | |
7923 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 7924 | state = gfc_state_stack->previous->state; |
636dff67 SK |
7925 | block_name = gfc_state_stack->previous->sym == NULL |
7926 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
7927 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7928 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
7929 | break; |
7930 | ||
7931 | default: | |
7932 | break; | |
6de9cd9a DN |
7933 | } |
7934 | ||
63af1586 PT |
7935 | if (!abreviated_modproc_decl) |
7936 | abreviated_modproc_decl = gfc_current_block () | |
7937 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 7938 | |
6de9cd9a DN |
7939 | switch (state) |
7940 | { | |
7941 | case COMP_NONE: | |
7942 | case COMP_PROGRAM: | |
7943 | *st = ST_END_PROGRAM; | |
7944 | target = " program"; | |
ddc9ce91 | 7945 | eos_ok = 1; |
6de9cd9a DN |
7946 | break; |
7947 | ||
7948 | case COMP_SUBROUTINE: | |
7949 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 7950 | if (!abreviated_modproc_decl) |
6de9cd9a | 7951 | target = " subroutine"; |
4668d6f9 PT |
7952 | else |
7953 | target = " procedure"; | |
ddc9ce91 | 7954 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7955 | break; |
7956 | ||
7957 | case COMP_FUNCTION: | |
7958 | *st = ST_END_FUNCTION; | |
4668d6f9 | 7959 | if (!abreviated_modproc_decl) |
6de9cd9a | 7960 | target = " function"; |
4668d6f9 PT |
7961 | else |
7962 | target = " procedure"; | |
ddc9ce91 | 7963 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7964 | break; |
7965 | ||
7966 | case COMP_BLOCK_DATA: | |
7967 | *st = ST_END_BLOCK_DATA; | |
7968 | target = " block data"; | |
ddc9ce91 | 7969 | eos_ok = 1; |
6de9cd9a DN |
7970 | break; |
7971 | ||
7972 | case COMP_MODULE: | |
7973 | *st = ST_END_MODULE; | |
7974 | target = " module"; | |
ddc9ce91 | 7975 | eos_ok = 1; |
6de9cd9a DN |
7976 | break; |
7977 | ||
4668d6f9 PT |
7978 | case COMP_SUBMODULE: |
7979 | *st = ST_END_SUBMODULE; | |
7980 | target = " submodule"; | |
7981 | eos_ok = 1; | |
7982 | break; | |
7983 | ||
6de9cd9a DN |
7984 | case COMP_INTERFACE: |
7985 | *st = ST_END_INTERFACE; | |
7986 | target = " interface"; | |
ddc9ce91 | 7987 | eos_ok = 0; |
6de9cd9a DN |
7988 | break; |
7989 | ||
f6288c24 FR |
7990 | case COMP_MAP: |
7991 | *st = ST_END_MAP; | |
7992 | target = " map"; | |
7993 | eos_ok = 0; | |
7994 | break; | |
7995 | ||
7996 | case COMP_UNION: | |
7997 | *st = ST_END_UNION; | |
7998 | target = " union"; | |
7999 | eos_ok = 0; | |
8000 | break; | |
8001 | ||
8002 | case COMP_STRUCTURE: | |
8003 | *st = ST_END_STRUCTURE; | |
8004 | target = " structure"; | |
8005 | eos_ok = 0; | |
8006 | break; | |
8007 | ||
6de9cd9a | 8008 | case COMP_DERIVED: |
30b608eb | 8009 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
8010 | *st = ST_END_TYPE; |
8011 | target = " type"; | |
ddc9ce91 | 8012 | eos_ok = 0; |
6de9cd9a DN |
8013 | break; |
8014 | ||
03af1e4c DK |
8015 | case COMP_ASSOCIATE: |
8016 | *st = ST_END_ASSOCIATE; | |
8017 | target = " associate"; | |
8018 | eos_ok = 0; | |
8019 | break; | |
8020 | ||
9abe5e56 DK |
8021 | case COMP_BLOCK: |
8022 | *st = ST_END_BLOCK; | |
8023 | target = " block"; | |
8024 | eos_ok = 0; | |
8025 | break; | |
8026 | ||
6de9cd9a DN |
8027 | case COMP_IF: |
8028 | *st = ST_ENDIF; | |
8029 | target = " if"; | |
ddc9ce91 | 8030 | eos_ok = 0; |
6de9cd9a DN |
8031 | break; |
8032 | ||
8033 | case COMP_DO: | |
8c6a85e3 | 8034 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
8035 | *st = ST_ENDDO; |
8036 | target = " do"; | |
ddc9ce91 | 8037 | eos_ok = 0; |
6de9cd9a DN |
8038 | break; |
8039 | ||
d0a4a61c TB |
8040 | case COMP_CRITICAL: |
8041 | *st = ST_END_CRITICAL; | |
8042 | target = " critical"; | |
8043 | eos_ok = 0; | |
8044 | break; | |
8045 | ||
6de9cd9a | 8046 | case COMP_SELECT: |
cf2b3c22 | 8047 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
8048 | *st = ST_END_SELECT; |
8049 | target = " select"; | |
ddc9ce91 | 8050 | eos_ok = 0; |
6de9cd9a DN |
8051 | break; |
8052 | ||
8053 | case COMP_FORALL: | |
8054 | *st = ST_END_FORALL; | |
8055 | target = " forall"; | |
ddc9ce91 | 8056 | eos_ok = 0; |
6de9cd9a DN |
8057 | break; |
8058 | ||
8059 | case COMP_WHERE: | |
8060 | *st = ST_END_WHERE; | |
8061 | target = " where"; | |
ddc9ce91 | 8062 | eos_ok = 0; |
6de9cd9a DN |
8063 | break; |
8064 | ||
25d8f0a2 TS |
8065 | case COMP_ENUM: |
8066 | *st = ST_END_ENUM; | |
8067 | target = " enum"; | |
8068 | eos_ok = 0; | |
8069 | last_initializer = NULL; | |
8070 | set_enum_kind (); | |
8071 | gfc_free_enum_history (); | |
8072 | break; | |
8073 | ||
6de9cd9a DN |
8074 | default: |
8075 | gfc_error ("Unexpected END statement at %C"); | |
8076 | goto cleanup; | |
8077 | } | |
8078 | ||
3a43b5b3 | 8079 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8080 | if (gfc_match_eos () == MATCH_YES) |
8081 | { | |
272001a2 TB |
8082 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8083 | { | |
524af0d6 | 8084 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 8085 | "instead of %s statement at %L", |
4668d6f9 PT |
8086 | abreviated_modproc_decl ? "END PROCEDURE" |
8087 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
8088 | goto cleanup; |
8089 | } | |
8090 | else if (!eos_ok) | |
6de9cd9a | 8091 | { |
66e4ab31 | 8092 | /* We would have required END [something]. */ |
59ce85b5 TS |
8093 | gfc_error ("%s statement expected at %L", |
8094 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
8095 | goto cleanup; |
8096 | } | |
8097 | ||
8098 | return MATCH_YES; | |
8099 | } | |
8100 | ||
8101 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8102 | if (gfc_match (target) != MATCH_YES) | |
8103 | { | |
4668d6f9 PT |
8104 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8105 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
8106 | goto cleanup; |
8107 | } | |
874108a9 AV |
8108 | else |
8109 | got_matching_end = true; | |
6de9cd9a | 8110 | |
3a43b5b3 | 8111 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8112 | /* If we're at the end, make sure a block name wasn't required. */ |
8113 | if (gfc_match_eos () == MATCH_YES) | |
8114 | { | |
8115 | ||
690af379 | 8116 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 8117 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 8118 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
8119 | return MATCH_YES; |
8120 | ||
9abe5e56 | 8121 | if (!block_name) |
6de9cd9a DN |
8122 | return MATCH_YES; |
8123 | ||
c4100eae | 8124 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 8125 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
8126 | |
8127 | return MATCH_ERROR; | |
8128 | } | |
8129 | ||
8130 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8131 | if (*st == ST_END_INTERFACE) | |
8132 | return gfc_match_end_interface (); | |
8133 | ||
66e4ab31 SK |
8134 | /* We haven't hit the end of statement, so what is left must be an |
8135 | end-name. */ | |
6de9cd9a DN |
8136 | m = gfc_match_space (); |
8137 | if (m == MATCH_YES) | |
8138 | m = gfc_match_name (name); | |
8139 | ||
8140 | if (m == MATCH_NO) | |
8141 | gfc_error ("Expected terminating name at %C"); | |
8142 | if (m != MATCH_YES) | |
8143 | goto cleanup; | |
8144 | ||
8145 | if (block_name == NULL) | |
8146 | goto syntax; | |
8147 | ||
3d5dc929 PT |
8148 | /* We have to pick out the declared submodule name from the composite |
8149 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8150 | if (state == COMP_SUBMODULE) | |
8151 | block_name = strchr (block_name, '.') + 1; | |
8152 | ||
3070bab4 | 8153 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 8154 | { |
c4100eae | 8155 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
8156 | gfc_ascii_statement (*st)); |
8157 | goto cleanup; | |
8158 | } | |
3070bab4 JW |
8159 | /* Procedure pointer as function result. */ |
8160 | else if (strcmp (block_name, "ppr@") == 0 | |
8161 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8162 | { | |
c4100eae | 8163 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
8164 | gfc_current_block ()->ns->proc_name->name, |
8165 | gfc_ascii_statement (*st)); | |
8166 | goto cleanup; | |
8167 | } | |
6de9cd9a DN |
8168 | |
8169 | if (gfc_match_eos () == MATCH_YES) | |
8170 | return MATCH_YES; | |
8171 | ||
8172 | syntax: | |
8173 | gfc_syntax_error (*st); | |
8174 | ||
8175 | cleanup: | |
63645982 | 8176 | gfc_current_locus = old_loc; |
0cab6b73 TK |
8177 | |
8178 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8179 | Remove it from the parent namespace's sibling list. */ | |
8180 | ||
874108a9 | 8181 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
8182 | { |
8183 | parent_ns = gfc_current_ns->parent; | |
8184 | ||
8185 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8186 | ||
8187 | prev_ns = NULL; | |
8188 | ns = *nsp; | |
8189 | while (ns) | |
8190 | { | |
8191 | if (ns == gfc_current_ns) | |
8192 | { | |
8193 | if (prev_ns == NULL) | |
8194 | *nsp = NULL; | |
8195 | else | |
8196 | prev_ns->sibling = ns->sibling; | |
8197 | } | |
8198 | prev_ns = ns; | |
8199 | ns = ns->sibling; | |
8200 | } | |
874108a9 | 8201 | |
0cab6b73 TK |
8202 | gfc_free_namespace (gfc_current_ns); |
8203 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
8204 | gfc_state_stack = gfc_state_stack->previous; |
8205 | state = gfc_current_state (); | |
0cab6b73 TK |
8206 | } |
8207 | ||
6de9cd9a DN |
8208 | return MATCH_ERROR; |
8209 | } | |
8210 | ||
8211 | ||
8212 | ||
8213 | /***************** Attribute declaration statements ****************/ | |
8214 | ||
8215 | /* Set the attribute of a single variable. */ | |
8216 | ||
8217 | static match | |
8218 | attr_decl1 (void) | |
8219 | { | |
8220 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8221 | gfc_array_spec *as; | |
97440db5 ML |
8222 | |
8223 | /* Workaround -Wmaybe-uninitialized false positive during | |
8224 | profiledbootstrap by initializing them. */ | |
8225 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8226 | locus var_locus; |
8227 | match m; | |
8228 | ||
8229 | as = NULL; | |
8230 | ||
8231 | m = gfc_match_name (name); | |
8232 | if (m != MATCH_YES) | |
8233 | goto cleanup; | |
8234 | ||
08a6b8e0 | 8235 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8236 | return MATCH_ERROR; |
8237 | ||
524af0d6 | 8238 | if (!check_function_name (name)) |
bb9de0c4 JW |
8239 | { |
8240 | m = MATCH_ERROR; | |
8241 | goto cleanup; | |
8242 | } | |
f5acf0f2 | 8243 | |
63645982 | 8244 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8245 | |
8246 | /* Deal with possible array specification for certain attributes. */ | |
8247 | if (current_attr.dimension | |
be59db2d | 8248 | || current_attr.codimension |
6de9cd9a DN |
8249 | || current_attr.allocatable |
8250 | || current_attr.pointer | |
8251 | || current_attr.target) | |
8252 | { | |
be59db2d TB |
8253 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8254 | !current_attr.dimension | |
8255 | && !current_attr.pointer | |
8256 | && !current_attr.target); | |
6de9cd9a DN |
8257 | if (m == MATCH_ERROR) |
8258 | goto cleanup; | |
8259 | ||
8260 | if (current_attr.dimension && m == MATCH_NO) | |
8261 | { | |
636dff67 SK |
8262 | gfc_error ("Missing array specification at %L in DIMENSION " |
8263 | "statement", &var_locus); | |
6de9cd9a DN |
8264 | m = MATCH_ERROR; |
8265 | goto cleanup; | |
8266 | } | |
8267 | ||
1283ab12 TB |
8268 | if (current_attr.dimension && sym->value) |
8269 | { | |
8270 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8271 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8272 | m = MATCH_ERROR; |
8273 | goto cleanup; | |
8274 | } | |
8275 | ||
be59db2d TB |
8276 | if (current_attr.codimension && m == MATCH_NO) |
8277 | { | |
8278 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8279 | "statement", &var_locus); | |
8280 | m = MATCH_ERROR; | |
8281 | goto cleanup; | |
8282 | } | |
8283 | ||
6de9cd9a DN |
8284 | if ((current_attr.allocatable || current_attr.pointer) |
8285 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8286 | { | |
636dff67 | 8287 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8288 | m = MATCH_ERROR; |
8289 | goto cleanup; | |
8290 | } | |
8291 | } | |
8292 | ||
2e23972e JW |
8293 | /* Update symbol table. DIMENSION attribute is set in |
8294 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8295 | to the first component, or '_data' field. */ |
d40477b4 | 8296 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8297 | { |
524af0d6 | 8298 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8299 | { |
8300 | m = MATCH_ERROR; | |
8301 | goto cleanup; | |
8302 | } | |
2e23972e JW |
8303 | } |
8304 | else | |
8305 | { | |
be59db2d | 8306 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8307 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8308 | { |
8309 | m = MATCH_ERROR; | |
8310 | goto cleanup; | |
8311 | } | |
6de9cd9a | 8312 | } |
f5acf0f2 | 8313 | |
528622fd | 8314 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8315 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8316 | { |
8317 | m = MATCH_ERROR; | |
8318 | goto cleanup; | |
8319 | } | |
6de9cd9a | 8320 | |
524af0d6 | 8321 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8322 | { |
8323 | m = MATCH_ERROR; | |
8324 | goto cleanup; | |
8325 | } | |
d51347f9 | 8326 | |
83d890b9 AL |
8327 | if (sym->attr.cray_pointee && sym->as != NULL) |
8328 | { | |
8329 | /* Fix the array spec. */ | |
f5acf0f2 | 8330 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8331 | if (m == MATCH_ERROR) |
8332 | goto cleanup; | |
8333 | } | |
6de9cd9a | 8334 | |
524af0d6 | 8335 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8336 | { |
8337 | m = MATCH_ERROR; | |
8338 | goto cleanup; | |
8339 | } | |
8340 | ||
6de9cd9a DN |
8341 | if ((current_attr.external || current_attr.intrinsic) |
8342 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8343 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8344 | { |
8345 | m = MATCH_ERROR; | |
8346 | goto cleanup; | |
8347 | } | |
8348 | ||
3070bab4 JW |
8349 | add_hidden_procptr_result (sym); |
8350 | ||
6de9cd9a DN |
8351 | return MATCH_YES; |
8352 | ||
8353 | cleanup: | |
8354 | gfc_free_array_spec (as); | |
8355 | return m; | |
8356 | } | |
8357 | ||
8358 | ||
8359 | /* Generic attribute declaration subroutine. Used for attributes that | |
8360 | just have a list of names. */ | |
8361 | ||
8362 | static match | |
8363 | attr_decl (void) | |
8364 | { | |
8365 | match m; | |
8366 | ||
8367 | /* Gobble the optional double colon, by simply ignoring the result | |
8368 | of gfc_match(). */ | |
8369 | gfc_match (" ::"); | |
8370 | ||
8371 | for (;;) | |
8372 | { | |
8373 | m = attr_decl1 (); | |
8374 | if (m != MATCH_YES) | |
8375 | break; | |
8376 | ||
8377 | if (gfc_match_eos () == MATCH_YES) | |
8378 | { | |
8379 | m = MATCH_YES; | |
8380 | break; | |
8381 | } | |
8382 | ||
8383 | if (gfc_match_char (',') != MATCH_YES) | |
8384 | { | |
8385 | gfc_error ("Unexpected character in variable list at %C"); | |
8386 | m = MATCH_ERROR; | |
8387 | break; | |
8388 | } | |
8389 | } | |
8390 | ||
8391 | return m; | |
8392 | } | |
8393 | ||
8394 | ||
83d890b9 AL |
8395 | /* This routine matches Cray Pointer declarations of the form: |
8396 | pointer ( <pointer>, <pointee> ) | |
8397 | or | |
d51347f9 TB |
8398 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8399 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8400 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8401 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8402 | the pointee. For the statement |
83d890b9 AL |
8403 | pointer (ipt, ar(10)) |
8404 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8405 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8406 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8407 | |
8408 | static match | |
8409 | cray_pointer_decl (void) | |
8410 | { | |
8411 | match m; | |
be59db2d | 8412 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8413 | gfc_symbol *cptr; /* Pointer symbol. */ |
8414 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8415 | locus var_locus; | |
8416 | bool done = false; | |
8417 | ||
8418 | while (!done) | |
8419 | { | |
8420 | if (gfc_match_char ('(') != MATCH_YES) | |
8421 | { | |
a4d9b221 | 8422 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8423 | return MATCH_ERROR; |
83d890b9 | 8424 | } |
d51347f9 | 8425 | |
83d890b9 AL |
8426 | /* Match pointer. */ |
8427 | var_locus = gfc_current_locus; | |
8428 | gfc_clear_attr (¤t_attr); | |
8429 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8430 | current_ts.type = BT_INTEGER; | |
8431 | current_ts.kind = gfc_index_integer_kind; | |
8432 | ||
d51347f9 | 8433 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8434 | if (m != MATCH_YES) |
8435 | { | |
8436 | gfc_error ("Expected variable name at %C"); | |
8437 | return m; | |
8438 | } | |
d51347f9 | 8439 | |
524af0d6 | 8440 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8441 | return MATCH_ERROR; |
8442 | ||
d51347f9 | 8443 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8444 | |
8445 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8446 | { | |
8447 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8448 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8449 | } |
8450 | else if (cptr->ts.type != BT_INTEGER) | |
8451 | { | |
e25a0da3 | 8452 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8453 | return MATCH_ERROR; |
8454 | } | |
8455 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8456 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8457 | " memory addresses require %d bytes", |
636dff67 | 8458 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8459 | |
8460 | if (gfc_match_char (',') != MATCH_YES) | |
8461 | { | |
8462 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8463 | return MATCH_ERROR; |
83d890b9 AL |
8464 | } |
8465 | ||
d51347f9 | 8466 | /* Match Pointee. */ |
83d890b9 AL |
8467 | var_locus = gfc_current_locus; |
8468 | gfc_clear_attr (¤t_attr); | |
8469 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8470 | current_ts.type = BT_UNKNOWN; | |
8471 | current_ts.kind = 0; | |
8472 | ||
8473 | m = gfc_match_symbol (&cpte, 0); | |
8474 | if (m != MATCH_YES) | |
8475 | { | |
8476 | gfc_error ("Expected variable name at %C"); | |
8477 | return m; | |
8478 | } | |
d51347f9 | 8479 | |
83d890b9 | 8480 | /* Check for an optional array spec. */ |
be59db2d | 8481 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8482 | if (m == MATCH_ERROR) |
8483 | { | |
8484 | gfc_free_array_spec (as); | |
8485 | return m; | |
8486 | } | |
8487 | else if (m == MATCH_NO) | |
8488 | { | |
8489 | gfc_free_array_spec (as); | |
8490 | as = NULL; | |
f5acf0f2 | 8491 | } |
83d890b9 | 8492 | |
524af0d6 | 8493 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8494 | return MATCH_ERROR; |
8495 | ||
8496 | gfc_set_sym_referenced (cpte); | |
8497 | ||
8498 | if (cpte->as == NULL) | |
8499 | { | |
524af0d6 | 8500 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
8501 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8502 | } | |
8503 | else if (as != NULL) | |
8504 | { | |
e25a0da3 | 8505 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8506 | gfc_free_array_spec (as); |
8507 | return MATCH_ERROR; | |
8508 | } | |
f5acf0f2 | 8509 | |
83d890b9 | 8510 | as = NULL; |
f5acf0f2 | 8511 | |
83d890b9 AL |
8512 | if (cpte->as != NULL) |
8513 | { | |
8514 | /* Fix array spec. */ | |
8515 | m = gfc_mod_pointee_as (cpte->as); | |
8516 | if (m == MATCH_ERROR) | |
8517 | return m; | |
f5acf0f2 PT |
8518 | } |
8519 | ||
83d890b9 | 8520 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8521 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8522 | |
8523 | if (gfc_match_char (')') != MATCH_YES) | |
8524 | { | |
8525 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8526 | return MATCH_ERROR; |
83d890b9 AL |
8527 | } |
8528 | m = gfc_match_char (','); | |
8529 | if (m != MATCH_YES) | |
8530 | done = true; /* Stop searching for more declarations. */ | |
8531 | ||
8532 | } | |
f5acf0f2 | 8533 | |
83d890b9 AL |
8534 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8535 | || gfc_match_eos () != MATCH_YES) | |
8536 | { | |
a4d9b221 | 8537 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8538 | return MATCH_ERROR; |
8539 | } | |
8540 | return MATCH_YES; | |
8541 | } | |
8542 | ||
8543 | ||
6de9cd9a DN |
8544 | match |
8545 | gfc_match_external (void) | |
8546 | { | |
8547 | ||
8548 | gfc_clear_attr (¤t_attr); | |
1902704e | 8549 | current_attr.external = 1; |
6de9cd9a DN |
8550 | |
8551 | return attr_decl (); | |
8552 | } | |
8553 | ||
8554 | ||
6de9cd9a DN |
8555 | match |
8556 | gfc_match_intent (void) | |
8557 | { | |
8558 | sym_intent intent; | |
8559 | ||
9abe5e56 DK |
8560 | /* This is not allowed within a BLOCK construct! */ |
8561 | if (gfc_current_state () == COMP_BLOCK) | |
8562 | { | |
8563 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8564 | return MATCH_ERROR; | |
8565 | } | |
8566 | ||
6de9cd9a DN |
8567 | intent = match_intent_spec (); |
8568 | if (intent == INTENT_UNKNOWN) | |
8569 | return MATCH_ERROR; | |
8570 | ||
8571 | gfc_clear_attr (¤t_attr); | |
1902704e | 8572 | current_attr.intent = intent; |
6de9cd9a DN |
8573 | |
8574 | return attr_decl (); | |
8575 | } | |
8576 | ||
8577 | ||
8578 | match | |
8579 | gfc_match_intrinsic (void) | |
8580 | { | |
8581 | ||
8582 | gfc_clear_attr (¤t_attr); | |
1902704e | 8583 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8584 | |
8585 | return attr_decl (); | |
8586 | } | |
8587 | ||
8588 | ||
8589 | match | |
8590 | gfc_match_optional (void) | |
8591 | { | |
9abe5e56 DK |
8592 | /* This is not allowed within a BLOCK construct! */ |
8593 | if (gfc_current_state () == COMP_BLOCK) | |
8594 | { | |
8595 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8596 | return MATCH_ERROR; | |
8597 | } | |
6de9cd9a DN |
8598 | |
8599 | gfc_clear_attr (¤t_attr); | |
1902704e | 8600 | current_attr.optional = 1; |
6de9cd9a DN |
8601 | |
8602 | return attr_decl (); | |
8603 | } | |
8604 | ||
8605 | ||
8606 | match | |
8607 | gfc_match_pointer (void) | |
8608 | { | |
83d890b9 | 8609 | gfc_gobble_whitespace (); |
8fc541d3 | 8610 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8611 | { |
c61819ff | 8612 | if (!flag_cray_pointer) |
83d890b9 | 8613 | { |
636dff67 SK |
8614 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8615 | "flag"); | |
83d890b9 AL |
8616 | return MATCH_ERROR; |
8617 | } | |
8618 | return cray_pointer_decl (); | |
8619 | } | |
8620 | else | |
8621 | { | |
8622 | gfc_clear_attr (¤t_attr); | |
1902704e | 8623 | current_attr.pointer = 1; |
f5acf0f2 | 8624 | |
83d890b9 AL |
8625 | return attr_decl (); |
8626 | } | |
6de9cd9a DN |
8627 | } |
8628 | ||
8629 | ||
8630 | match | |
8631 | gfc_match_allocatable (void) | |
8632 | { | |
6de9cd9a | 8633 | gfc_clear_attr (¤t_attr); |
1902704e | 8634 | current_attr.allocatable = 1; |
6de9cd9a DN |
8635 | |
8636 | return attr_decl (); | |
8637 | } | |
8638 | ||
8639 | ||
be59db2d TB |
8640 | match |
8641 | gfc_match_codimension (void) | |
8642 | { | |
8643 | gfc_clear_attr (¤t_attr); | |
8644 | current_attr.codimension = 1; | |
8645 | ||
8646 | return attr_decl (); | |
8647 | } | |
8648 | ||
8649 | ||
fe4e525c TB |
8650 | match |
8651 | gfc_match_contiguous (void) | |
8652 | { | |
524af0d6 | 8653 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8654 | return MATCH_ERROR; |
8655 | ||
8656 | gfc_clear_attr (¤t_attr); | |
8657 | current_attr.contiguous = 1; | |
8658 | ||
8659 | return attr_decl (); | |
8660 | } | |
8661 | ||
8662 | ||
6de9cd9a DN |
8663 | match |
8664 | gfc_match_dimension (void) | |
8665 | { | |
6de9cd9a | 8666 | gfc_clear_attr (¤t_attr); |
1902704e | 8667 | current_attr.dimension = 1; |
6de9cd9a DN |
8668 | |
8669 | return attr_decl (); | |
8670 | } | |
8671 | ||
8672 | ||
8673 | match | |
8674 | gfc_match_target (void) | |
8675 | { | |
6de9cd9a | 8676 | gfc_clear_attr (¤t_attr); |
1902704e | 8677 | current_attr.target = 1; |
6de9cd9a DN |
8678 | |
8679 | return attr_decl (); | |
8680 | } | |
8681 | ||
8682 | ||
8683 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8684 | statement. */ | |
8685 | ||
8686 | static match | |
8687 | access_attr_decl (gfc_statement st) | |
8688 | { | |
8689 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8690 | interface_type type; | |
8691 | gfc_user_op *uop; | |
c3f34952 | 8692 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8693 | gfc_intrinsic_op op; |
6de9cd9a DN |
8694 | match m; |
8695 | ||
8696 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8697 | goto done; | |
8698 | ||
8699 | for (;;) | |
8700 | { | |
a1ee985f | 8701 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8702 | if (m == MATCH_NO) |
8703 | goto syntax; | |
8704 | if (m == MATCH_ERROR) | |
8705 | return MATCH_ERROR; | |
8706 | ||
8707 | switch (type) | |
8708 | { | |
8709 | case INTERFACE_NAMELESS: | |
9e1d712c | 8710 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8711 | goto syntax; |
8712 | ||
8713 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8714 | case INTERFACE_DTIO: |
dc42a736 | 8715 | |
6de9cd9a DN |
8716 | if (gfc_get_symbol (name, NULL, &sym)) |
8717 | goto done; | |
8718 | ||
41036686 PT |
8719 | if (type == INTERFACE_DTIO |
8720 | && gfc_current_ns->proc_name | |
8721 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8722 | && sym->attr.flavor == FL_UNKNOWN) | |
8723 | sym->attr.flavor = FL_PROCEDURE; | |
8724 | ||
70112e2a PT |
8725 | if (!gfc_add_access (&sym->attr, |
8726 | (st == ST_PUBLIC) | |
8727 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8728 | sym->name, NULL)) |
6de9cd9a DN |
8729 | return MATCH_ERROR; |
8730 | ||
c3f34952 | 8731 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
8732 | && !gfc_add_access (&dt_sym->attr, |
8733 | (st == ST_PUBLIC) | |
8734 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8735 | sym->name, NULL)) |
c3f34952 TB |
8736 | return MATCH_ERROR; |
8737 | ||
6de9cd9a DN |
8738 | break; |
8739 | ||
8740 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8741 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8742 | { |
fb03a37e TK |
8743 | gfc_intrinsic_op other_op; |
8744 | ||
a1ee985f | 8745 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 8746 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
8747 | |
8748 | /* Handle the case if there is another op with the same | |
8749 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8750 | other_op = gfc_equivalent_op (op); | |
8751 | ||
8752 | if (other_op != INTRINSIC_NONE) | |
8753 | gfc_current_ns->operator_access[other_op] = | |
8754 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8755 | ||
6de9cd9a DN |
8756 | } |
8757 | else | |
8758 | { | |
8759 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8760 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8761 | goto done; |
8762 | } | |
8763 | ||
8764 | break; | |
8765 | ||
8766 | case INTERFACE_USER_OP: | |
8767 | uop = gfc_get_uop (name); | |
8768 | ||
8769 | if (uop->access == ACCESS_UNKNOWN) | |
8770 | { | |
636dff67 SK |
8771 | uop->access = (st == ST_PUBLIC) |
8772 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
8773 | } |
8774 | else | |
8775 | { | |
636dff67 SK |
8776 | gfc_error ("Access specification of the .%s. operator at %C " |
8777 | "has already been specified", sym->name); | |
6de9cd9a DN |
8778 | goto done; |
8779 | } | |
8780 | ||
8781 | break; | |
8782 | } | |
8783 | ||
8784 | if (gfc_match_char (',') == MATCH_NO) | |
8785 | break; | |
8786 | } | |
8787 | ||
8788 | if (gfc_match_eos () != MATCH_YES) | |
8789 | goto syntax; | |
8790 | return MATCH_YES; | |
8791 | ||
8792 | syntax: | |
8793 | gfc_syntax_error (st); | |
8794 | ||
8795 | done: | |
8796 | return MATCH_ERROR; | |
8797 | } | |
8798 | ||
8799 | ||
ee7e677f TB |
8800 | match |
8801 | gfc_match_protected (void) | |
8802 | { | |
8803 | gfc_symbol *sym; | |
8804 | match m; | |
8805 | ||
73641c88 SK |
8806 | if (!gfc_current_ns->proc_name |
8807 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8808 | { |
8809 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8810 | "part of a module"); | |
8811 | return MATCH_ERROR; | |
8812 | ||
8813 | } | |
8814 | ||
524af0d6 | 8815 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8816 | return MATCH_ERROR; |
8817 | ||
8818 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8819 | { | |
8820 | return MATCH_ERROR; | |
8821 | } | |
8822 | ||
8823 | if (gfc_match_eos () == MATCH_YES) | |
8824 | goto syntax; | |
8825 | ||
8826 | for(;;) | |
8827 | { | |
8828 | m = gfc_match_symbol (&sym, 0); | |
8829 | switch (m) | |
8830 | { | |
8831 | case MATCH_YES: | |
524af0d6 | 8832 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8833 | return MATCH_ERROR; |
8834 | goto next_item; | |
8835 | ||
8836 | case MATCH_NO: | |
8837 | break; | |
8838 | ||
8839 | case MATCH_ERROR: | |
8840 | return MATCH_ERROR; | |
8841 | } | |
8842 | ||
8843 | next_item: | |
8844 | if (gfc_match_eos () == MATCH_YES) | |
8845 | break; | |
8846 | if (gfc_match_char (',') != MATCH_YES) | |
8847 | goto syntax; | |
8848 | } | |
8849 | ||
8850 | return MATCH_YES; | |
8851 | ||
8852 | syntax: | |
8853 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8854 | return MATCH_ERROR; | |
8855 | } | |
8856 | ||
8857 | ||
86bf520d | 8858 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8859 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8860 | type declaration or a module. */ |
8861 | ||
8862 | match | |
636dff67 | 8863 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
8864 | { |
8865 | ||
8866 | if (gfc_match ("private") != MATCH_YES) | |
8867 | return MATCH_NO; | |
8868 | ||
d51347f9 | 8869 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
8870 | && !(gfc_current_state () == COMP_DERIVED |
8871 | && gfc_state_stack->previous | |
8872 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8873 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8874 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8875 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
8876 | { |
8877 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8878 | "specification part of a module"); | |
8879 | return MATCH_ERROR; | |
8880 | } | |
8881 | ||
6de9cd9a DN |
8882 | if (gfc_current_state () == COMP_DERIVED) |
8883 | { | |
8884 | if (gfc_match_eos () == MATCH_YES) | |
8885 | { | |
8886 | *st = ST_PRIVATE; | |
8887 | return MATCH_YES; | |
8888 | } | |
8889 | ||
8890 | gfc_syntax_error (ST_PRIVATE); | |
8891 | return MATCH_ERROR; | |
8892 | } | |
8893 | ||
8894 | if (gfc_match_eos () == MATCH_YES) | |
8895 | { | |
8896 | *st = ST_PRIVATE; | |
8897 | return MATCH_YES; | |
8898 | } | |
8899 | ||
8900 | *st = ST_ATTR_DECL; | |
8901 | return access_attr_decl (ST_PRIVATE); | |
8902 | } | |
8903 | ||
8904 | ||
8905 | match | |
636dff67 | 8906 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
8907 | { |
8908 | ||
8909 | if (gfc_match ("public") != MATCH_YES) | |
8910 | return MATCH_NO; | |
8911 | ||
d51347f9 TB |
8912 | if (gfc_current_state () != COMP_MODULE) |
8913 | { | |
8914 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8915 | "specification part of a module"); | |
8916 | return MATCH_ERROR; | |
8917 | } | |
8918 | ||
6de9cd9a DN |
8919 | if (gfc_match_eos () == MATCH_YES) |
8920 | { | |
8921 | *st = ST_PUBLIC; | |
8922 | return MATCH_YES; | |
8923 | } | |
8924 | ||
8925 | *st = ST_ATTR_DECL; | |
8926 | return access_attr_decl (ST_PUBLIC); | |
8927 | } | |
8928 | ||
8929 | ||
8930 | /* Workhorse for gfc_match_parameter. */ | |
8931 | ||
8932 | static match | |
8933 | do_parm (void) | |
8934 | { | |
8935 | gfc_symbol *sym; | |
8936 | gfc_expr *init; | |
8937 | match m; | |
524af0d6 | 8938 | bool t; |
6de9cd9a DN |
8939 | |
8940 | m = gfc_match_symbol (&sym, 0); | |
8941 | if (m == MATCH_NO) | |
8942 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8943 | ||
8944 | if (m != MATCH_YES) | |
8945 | return m; | |
8946 | ||
8947 | if (gfc_match_char ('=') == MATCH_NO) | |
8948 | { | |
8949 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8950 | return MATCH_ERROR; | |
8951 | } | |
8952 | ||
8953 | m = gfc_match_init_expr (&init); | |
8954 | if (m == MATCH_NO) | |
8955 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8956 | if (m != MATCH_YES) | |
8957 | return m; | |
8958 | ||
8959 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 8960 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
8961 | { |
8962 | m = MATCH_ERROR; | |
8963 | goto cleanup; | |
8964 | } | |
8965 | ||
524af0d6 JB |
8966 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8967 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
8968 | { |
8969 | m = MATCH_ERROR; | |
8970 | goto cleanup; | |
8971 | } | |
8972 | ||
1283ab12 TB |
8973 | if (sym->value) |
8974 | { | |
8975 | gfc_error ("Initializing already initialized variable at %C"); | |
8976 | m = MATCH_ERROR; | |
8977 | goto cleanup; | |
8978 | } | |
8979 | ||
7919373d | 8980 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 8981 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
8982 | |
8983 | cleanup: | |
8984 | gfc_free_expr (init); | |
8985 | return m; | |
8986 | } | |
8987 | ||
8988 | ||
8989 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8990 | ||
8991 | match | |
8992 | gfc_match_parameter (void) | |
8993 | { | |
35ea947f | 8994 | const char *term = " )%t"; |
6de9cd9a DN |
8995 | match m; |
8996 | ||
8997 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
8998 | { |
8999 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
9000 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
9001 | return MATCH_NO; | |
9002 | term = " %t"; | |
9003 | } | |
6de9cd9a DN |
9004 | |
9005 | for (;;) | |
9006 | { | |
9007 | m = do_parm (); | |
9008 | if (m != MATCH_YES) | |
9009 | break; | |
9010 | ||
35ea947f | 9011 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
9012 | break; |
9013 | ||
9014 | if (gfc_match_char (',') != MATCH_YES) | |
9015 | { | |
9016 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
9017 | m = MATCH_ERROR; | |
9018 | break; | |
9019 | } | |
9020 | } | |
9021 | ||
9022 | return m; | |
9023 | } | |
9024 | ||
9025 | ||
34d567d1 FR |
9026 | match |
9027 | gfc_match_automatic (void) | |
9028 | { | |
9029 | gfc_symbol *sym; | |
9030 | match m; | |
9031 | bool seen_symbol = false; | |
9032 | ||
9033 | if (!flag_dec_static) | |
9034 | { | |
cf004230 FR |
9035 | gfc_error ("%s at %C is a DEC extension, enable with " |
9036 | "%<-fdec-static%>", | |
9037 | "AUTOMATIC" | |
9038 | ); | |
34d567d1 FR |
9039 | return MATCH_ERROR; |
9040 | } | |
9041 | ||
9042 | gfc_match (" ::"); | |
9043 | ||
9044 | for (;;) | |
9045 | { | |
9046 | m = gfc_match_symbol (&sym, 0); | |
9047 | switch (m) | |
9048 | { | |
9049 | case MATCH_NO: | |
9050 | break; | |
9051 | ||
9052 | case MATCH_ERROR: | |
9053 | return MATCH_ERROR; | |
9054 | ||
9055 | case MATCH_YES: | |
9056 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9057 | return MATCH_ERROR; | |
9058 | seen_symbol = true; | |
9059 | break; | |
9060 | } | |
9061 | ||
9062 | if (gfc_match_eos () == MATCH_YES) | |
9063 | break; | |
9064 | if (gfc_match_char (',') != MATCH_YES) | |
9065 | goto syntax; | |
9066 | } | |
9067 | ||
9068 | if (!seen_symbol) | |
9069 | { | |
9070 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9071 | return MATCH_ERROR; | |
9072 | } | |
9073 | ||
9074 | return MATCH_YES; | |
9075 | ||
9076 | syntax: | |
9077 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9078 | return MATCH_ERROR; | |
9079 | } | |
9080 | ||
9081 | ||
9082 | match | |
9083 | gfc_match_static (void) | |
9084 | { | |
9085 | gfc_symbol *sym; | |
9086 | match m; | |
9087 | bool seen_symbol = false; | |
9088 | ||
9089 | if (!flag_dec_static) | |
9090 | { | |
cf004230 FR |
9091 | gfc_error ("%s at %C is a DEC extension, enable with " |
9092 | "%<-fdec-static%>", | |
9093 | "STATIC"); | |
34d567d1 FR |
9094 | return MATCH_ERROR; |
9095 | } | |
9096 | ||
9097 | gfc_match (" ::"); | |
9098 | ||
9099 | for (;;) | |
9100 | { | |
9101 | m = gfc_match_symbol (&sym, 0); | |
9102 | switch (m) | |
9103 | { | |
9104 | case MATCH_NO: | |
9105 | break; | |
9106 | ||
9107 | case MATCH_ERROR: | |
9108 | return MATCH_ERROR; | |
9109 | ||
9110 | case MATCH_YES: | |
9111 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9112 | &gfc_current_locus)) | |
9113 | return MATCH_ERROR; | |
9114 | seen_symbol = true; | |
9115 | break; | |
9116 | } | |
9117 | ||
9118 | if (gfc_match_eos () == MATCH_YES) | |
9119 | break; | |
9120 | if (gfc_match_char (',') != MATCH_YES) | |
9121 | goto syntax; | |
9122 | } | |
9123 | ||
9124 | if (!seen_symbol) | |
9125 | { | |
9126 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9127 | return MATCH_ERROR; | |
9128 | } | |
9129 | ||
9130 | return MATCH_YES; | |
9131 | ||
9132 | syntax: | |
9133 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9134 | return MATCH_ERROR; | |
9135 | } | |
9136 | ||
9137 | ||
6de9cd9a DN |
9138 | /* Save statements have a special syntax. */ |
9139 | ||
9140 | match | |
9141 | gfc_match_save (void) | |
9142 | { | |
9056bd70 TS |
9143 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9144 | gfc_common_head *c; | |
6de9cd9a DN |
9145 | gfc_symbol *sym; |
9146 | match m; | |
9147 | ||
9148 | if (gfc_match_eos () == MATCH_YES) | |
9149 | { | |
9150 | if (gfc_current_ns->seen_save) | |
9151 | { | |
524af0d6 JB |
9152 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9153 | "follows previous SAVE statement")) | |
09e87839 | 9154 | return MATCH_ERROR; |
6de9cd9a DN |
9155 | } |
9156 | ||
9157 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9158 | return MATCH_YES; | |
9159 | } | |
9160 | ||
9161 | if (gfc_current_ns->save_all) | |
9162 | { | |
524af0d6 JB |
9163 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9164 | "blanket SAVE statement")) | |
09e87839 | 9165 | return MATCH_ERROR; |
6de9cd9a DN |
9166 | } |
9167 | ||
9168 | gfc_match (" ::"); | |
9169 | ||
9170 | for (;;) | |
9171 | { | |
9172 | m = gfc_match_symbol (&sym, 0); | |
9173 | switch (m) | |
9174 | { | |
9175 | case MATCH_YES: | |
70112e2a | 9176 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 9177 | &gfc_current_locus)) |
6de9cd9a DN |
9178 | return MATCH_ERROR; |
9179 | goto next_item; | |
9180 | ||
9181 | case MATCH_NO: | |
9182 | break; | |
9183 | ||
9184 | case MATCH_ERROR: | |
9185 | return MATCH_ERROR; | |
9186 | } | |
9187 | ||
9056bd70 | 9188 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
9189 | if (m == MATCH_ERROR) |
9190 | return MATCH_ERROR; | |
9191 | if (m == MATCH_NO) | |
9192 | goto syntax; | |
9193 | ||
53814b8f | 9194 | c = gfc_get_common (n, 0); |
9056bd70 TS |
9195 | c->saved = 1; |
9196 | ||
6de9cd9a DN |
9197 | gfc_current_ns->seen_save = 1; |
9198 | ||
9199 | next_item: | |
9200 | if (gfc_match_eos () == MATCH_YES) | |
9201 | break; | |
9202 | if (gfc_match_char (',') != MATCH_YES) | |
9203 | goto syntax; | |
9204 | } | |
9205 | ||
9206 | return MATCH_YES; | |
9207 | ||
9208 | syntax: | |
9209 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9210 | return MATCH_ERROR; | |
9211 | } | |
9212 | ||
9213 | ||
06469efd PT |
9214 | match |
9215 | gfc_match_value (void) | |
9216 | { | |
9217 | gfc_symbol *sym; | |
9218 | match m; | |
9219 | ||
9abe5e56 DK |
9220 | /* This is not allowed within a BLOCK construct! */ |
9221 | if (gfc_current_state () == COMP_BLOCK) | |
9222 | { | |
9223 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9224 | return MATCH_ERROR; | |
9225 | } | |
9226 | ||
524af0d6 | 9227 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9228 | return MATCH_ERROR; |
9229 | ||
9230 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9231 | { | |
9232 | return MATCH_ERROR; | |
9233 | } | |
9234 | ||
9235 | if (gfc_match_eos () == MATCH_YES) | |
9236 | goto syntax; | |
9237 | ||
9238 | for(;;) | |
9239 | { | |
9240 | m = gfc_match_symbol (&sym, 0); | |
9241 | switch (m) | |
9242 | { | |
9243 | case MATCH_YES: | |
524af0d6 | 9244 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9245 | return MATCH_ERROR; |
9246 | goto next_item; | |
9247 | ||
9248 | case MATCH_NO: | |
9249 | break; | |
9250 | ||
9251 | case MATCH_ERROR: | |
9252 | return MATCH_ERROR; | |
9253 | } | |
9254 | ||
9255 | next_item: | |
9256 | if (gfc_match_eos () == MATCH_YES) | |
9257 | break; | |
9258 | if (gfc_match_char (',') != MATCH_YES) | |
9259 | goto syntax; | |
9260 | } | |
9261 | ||
9262 | return MATCH_YES; | |
9263 | ||
9264 | syntax: | |
9265 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9266 | return MATCH_ERROR; | |
9267 | } | |
9268 | ||
66e4ab31 | 9269 | |
775e6c3a TB |
9270 | match |
9271 | gfc_match_volatile (void) | |
9272 | { | |
9273 | gfc_symbol *sym; | |
ba77f7ba | 9274 | char *name; |
775e6c3a TB |
9275 | match m; |
9276 | ||
524af0d6 | 9277 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9278 | return MATCH_ERROR; |
9279 | ||
9280 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9281 | { | |
9282 | return MATCH_ERROR; | |
9283 | } | |
9284 | ||
9285 | if (gfc_match_eos () == MATCH_YES) | |
9286 | goto syntax; | |
9287 | ||
9288 | for(;;) | |
9289 | { | |
f5acf0f2 | 9290 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9291 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9292 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9293 | switch (m) |
9294 | { | |
9295 | case MATCH_YES: | |
ba77f7ba SK |
9296 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9297 | strcpy (name, sym->name); | |
9298 | if (!check_function_name (name)) | |
9299 | return MATCH_ERROR; | |
be59db2d TB |
9300 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9301 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9302 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9303 | { | |
c4100eae | 9304 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9305 | "%C, which is use-/host-associated", sym->name); |
9306 | return MATCH_ERROR; | |
9307 | } | |
524af0d6 | 9308 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9309 | return MATCH_ERROR; |
9310 | goto next_item; | |
9311 | ||
9312 | case MATCH_NO: | |
9313 | break; | |
9314 | ||
9315 | case MATCH_ERROR: | |
9316 | return MATCH_ERROR; | |
9317 | } | |
9318 | ||
9319 | next_item: | |
9320 | if (gfc_match_eos () == MATCH_YES) | |
9321 | break; | |
9322 | if (gfc_match_char (',') != MATCH_YES) | |
9323 | goto syntax; | |
9324 | } | |
9325 | ||
9326 | return MATCH_YES; | |
9327 | ||
9328 | syntax: | |
9329 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9330 | return MATCH_ERROR; | |
9331 | } | |
9332 | ||
9333 | ||
1eee5628 TB |
9334 | match |
9335 | gfc_match_asynchronous (void) | |
9336 | { | |
9337 | gfc_symbol *sym; | |
ba77f7ba | 9338 | char *name; |
1eee5628 TB |
9339 | match m; |
9340 | ||
524af0d6 | 9341 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9342 | return MATCH_ERROR; |
9343 | ||
9344 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9345 | { | |
9346 | return MATCH_ERROR; | |
9347 | } | |
9348 | ||
9349 | if (gfc_match_eos () == MATCH_YES) | |
9350 | goto syntax; | |
9351 | ||
9352 | for(;;) | |
9353 | { | |
f5acf0f2 | 9354 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9355 | symbols locally. */ |
9356 | m = gfc_match_symbol (&sym, 1); | |
9357 | switch (m) | |
9358 | { | |
9359 | case MATCH_YES: | |
ba77f7ba SK |
9360 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9361 | strcpy (name, sym->name); | |
9362 | if (!check_function_name (name)) | |
9363 | return MATCH_ERROR; | |
524af0d6 | 9364 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9365 | return MATCH_ERROR; |
9366 | goto next_item; | |
9367 | ||
9368 | case MATCH_NO: | |
9369 | break; | |
9370 | ||
9371 | case MATCH_ERROR: | |
9372 | return MATCH_ERROR; | |
9373 | } | |
9374 | ||
9375 | next_item: | |
9376 | if (gfc_match_eos () == MATCH_YES) | |
9377 | break; | |
9378 | if (gfc_match_char (',') != MATCH_YES) | |
9379 | goto syntax; | |
9380 | } | |
9381 | ||
9382 | return MATCH_YES; | |
9383 | ||
9384 | syntax: | |
9385 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9386 | return MATCH_ERROR; | |
9387 | } | |
9388 | ||
9389 | ||
4668d6f9 PT |
9390 | /* Match a module procedure statement in a submodule. */ |
9391 | ||
9392 | match | |
9393 | gfc_match_submod_proc (void) | |
9394 | { | |
9395 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9396 | gfc_symbol *sym, *fsym; | |
9397 | match m; | |
9398 | gfc_formal_arglist *formal, *head, *tail; | |
9399 | ||
9400 | if (gfc_current_state () != COMP_CONTAINS | |
9401 | || !(gfc_state_stack->previous | |
70112e2a PT |
9402 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9403 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9404 | return MATCH_NO; |
9405 | ||
9406 | m = gfc_match (" module% procedure% %n", name); | |
9407 | if (m != MATCH_YES) | |
9408 | return m; | |
9409 | ||
9410 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9411 | "at %C")) | |
9412 | return MATCH_ERROR; | |
9413 | ||
9414 | if (get_proc_name (name, &sym, false)) | |
9415 | return MATCH_ERROR; | |
9416 | ||
9417 | /* Make sure that the result field is appropriately filled, even though | |
9418 | the result symbol will be replaced later on. */ | |
c064374d | 9419 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9420 | { |
c064374d PT |
9421 | if (sym->tlink->result |
9422 | && sym->tlink->result != sym->tlink) | |
9423 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9424 | else |
9425 | sym->result = sym; | |
9426 | } | |
9427 | ||
9428 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9429 | the symbol existed before. */ | |
9430 | sym->declared_at = gfc_current_locus; | |
9431 | ||
9432 | if (!sym->attr.module_procedure) | |
9433 | return MATCH_ERROR; | |
9434 | ||
9435 | /* Signal match_end to expect "end procedure". */ | |
9436 | sym->abr_modproc_decl = 1; | |
9437 | ||
9438 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9439 | sym->attr.if_source = IFSRC_DECL; | |
9440 | ||
9441 | gfc_new_block = sym; | |
9442 | ||
9443 | /* Make a new formal arglist with the symbols in the procedure | |
9444 | namespace. */ | |
9445 | head = tail = NULL; | |
9446 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9447 | { | |
9448 | if (formal == sym->formal) | |
9449 | head = tail = gfc_get_formal_arglist (); | |
9450 | else | |
9451 | { | |
9452 | tail->next = gfc_get_formal_arglist (); | |
9453 | tail = tail->next; | |
9454 | } | |
9455 | ||
9456 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9457 | goto cleanup; | |
9458 | ||
9459 | tail->sym = fsym; | |
9460 | gfc_set_sym_referenced (fsym); | |
9461 | } | |
9462 | ||
9463 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9464 | interface declaration is cleared. This allows us to add the | |
9465 | explicit interface as is done for other type of procedure. */ | |
9466 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9467 | &gfc_current_locus)) | |
9468 | return MATCH_ERROR; | |
9469 | ||
9470 | if (gfc_match_eos () != MATCH_YES) | |
9471 | { | |
9472 | gfc_syntax_error (ST_MODULE_PROC); | |
9473 | return MATCH_ERROR; | |
9474 | } | |
9475 | ||
9476 | return MATCH_YES; | |
9477 | ||
9478 | cleanup: | |
9479 | gfc_free_formal_arglist (head); | |
9480 | return MATCH_ERROR; | |
9481 | } | |
9482 | ||
9483 | ||
6de9cd9a DN |
9484 | /* Match a module procedure statement. Note that we have to modify |
9485 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9486 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9487 | |
9488 | match | |
9489 | gfc_match_modproc (void) | |
9490 | { | |
9491 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9492 | gfc_symbol *sym; | |
9493 | match m; | |
162b5a21 | 9494 | locus old_locus; |
060fca4a | 9495 | gfc_namespace *module_ns; |
2b77e908 | 9496 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9497 | |
9498 | if (gfc_state_stack->state != COMP_INTERFACE | |
9499 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9500 | || current_interface.type == INTERFACE_NAMELESS |
9501 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9502 | { |
636dff67 SK |
9503 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9504 | "interface"); | |
6de9cd9a DN |
9505 | return MATCH_ERROR; |
9506 | } | |
9507 | ||
060fca4a PT |
9508 | module_ns = gfc_current_ns->parent; |
9509 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9510 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9511 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9512 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9513 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9514 | break; |
9515 | ||
9516 | if (module_ns == NULL) | |
9517 | return MATCH_ERROR; | |
9518 | ||
2b77e908 FXC |
9519 | /* Store the current state of the interface. We will need it if we |
9520 | end up with a syntax error and need to recover. */ | |
9521 | old_interface_head = gfc_current_interface_head (); | |
9522 | ||
162b5a21 SK |
9523 | /* Check if the F2008 optional double colon appears. */ |
9524 | gfc_gobble_whitespace (); | |
9525 | old_locus = gfc_current_locus; | |
9526 | if (gfc_match ("::") == MATCH_YES) | |
9527 | { | |
524af0d6 JB |
9528 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9529 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9530 | return MATCH_ERROR; |
9531 | } | |
9532 | else | |
9533 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9534 | |
6de9cd9a DN |
9535 | for (;;) |
9536 | { | |
2b77e908 | 9537 | bool last = false; |
162b5a21 | 9538 | old_locus = gfc_current_locus; |
2b77e908 | 9539 | |
6de9cd9a DN |
9540 | m = gfc_match_name (name); |
9541 | if (m == MATCH_NO) | |
9542 | goto syntax; | |
9543 | if (m != MATCH_YES) | |
9544 | return MATCH_ERROR; | |
9545 | ||
2b77e908 FXC |
9546 | /* Check for syntax error before starting to add symbols to the |
9547 | current namespace. */ | |
9548 | if (gfc_match_eos () == MATCH_YES) | |
9549 | last = true; | |
162b5a21 | 9550 | |
2b77e908 FXC |
9551 | if (!last && gfc_match_char (',') != MATCH_YES) |
9552 | goto syntax; | |
9553 | ||
9554 | /* Now we're sure the syntax is valid, we process this item | |
9555 | further. */ | |
060fca4a | 9556 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9557 | return MATCH_ERROR; |
9558 | ||
43dfd40c SK |
9559 | if (sym->attr.intrinsic) |
9560 | { | |
9561 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9562 | "PROCEDURE", &old_locus); | |
9563 | return MATCH_ERROR; | |
9564 | } | |
9565 | ||
6de9cd9a | 9566 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9567 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9568 | return MATCH_ERROR; |
9569 | ||
524af0d6 | 9570 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9571 | return MATCH_ERROR; |
9572 | ||
71f77fd7 | 9573 | sym->attr.mod_proc = 1; |
43dfd40c | 9574 | sym->declared_at = old_locus; |
71f77fd7 | 9575 | |
2b77e908 | 9576 | if (last) |
6de9cd9a | 9577 | break; |
6de9cd9a DN |
9578 | } |
9579 | ||
9580 | return MATCH_YES; | |
9581 | ||
9582 | syntax: | |
2b77e908 FXC |
9583 | /* Restore the previous state of the interface. */ |
9584 | interface = gfc_current_interface_head (); | |
9585 | gfc_set_current_interface_head (old_interface_head); | |
9586 | ||
9587 | /* Free the new interfaces. */ | |
9588 | while (interface != old_interface_head) | |
9589 | { | |
9590 | gfc_interface *i = interface->next; | |
cede9502 | 9591 | free (interface); |
2b77e908 FXC |
9592 | interface = i; |
9593 | } | |
9594 | ||
9595 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9596 | gfc_syntax_error (ST_MODULE_PROC); |
9597 | return MATCH_ERROR; | |
9598 | } | |
9599 | ||
9600 | ||
7d1f1e61 | 9601 | /* Check a derived type that is being extended. */ |
42e3d759 | 9602 | |
7d1f1e61 PT |
9603 | static gfc_symbol* |
9604 | check_extended_derived_type (char *name) | |
9605 | { | |
9606 | gfc_symbol *extended; | |
9607 | ||
9608 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9609 | { | |
9610 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9611 | return NULL; | |
9612 | } | |
9613 | ||
42e3d759 JW |
9614 | extended = gfc_find_dt_in_generic (extended); |
9615 | ||
9616 | /* F08:C428. */ | |
7d1f1e61 PT |
9617 | if (!extended) |
9618 | { | |
c4100eae | 9619 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9620 | return NULL; |
9621 | } | |
9622 | ||
9623 | if (extended->attr.flavor != FL_DERIVED) | |
9624 | { | |
c4100eae | 9625 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9626 | "derived type", name); |
9627 | return NULL; | |
9628 | } | |
9629 | ||
9630 | if (extended->attr.is_bind_c) | |
9631 | { | |
c4100eae | 9632 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9633 | "is BIND(C)", extended->name); |
9634 | return NULL; | |
9635 | } | |
9636 | ||
9637 | if (extended->attr.sequence) | |
9638 | { | |
c4100eae | 9639 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9640 | "is a SEQUENCE type", extended->name); |
9641 | return NULL; | |
9642 | } | |
9643 | ||
9644 | return extended; | |
9645 | } | |
9646 | ||
9647 | ||
a8b3b0b6 CR |
9648 | /* Match the optional attribute specifiers for a type declaration. |
9649 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9650 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9651 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9652 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9653 | |
9654 | match | |
7d1f1e61 | 9655 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9656 | { |
a8b3b0b6 | 9657 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9658 | if (gfc_match (" , private") == MATCH_YES) |
9659 | { | |
d51347f9 | 9660 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9661 | { |
d51347f9 TB |
9662 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9663 | "specification part of a module"); | |
6de9cd9a DN |
9664 | return MATCH_ERROR; |
9665 | } | |
9666 | ||
524af0d6 | 9667 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9668 | return MATCH_ERROR; |
6de9cd9a | 9669 | } |
a8b3b0b6 | 9670 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9671 | { |
d51347f9 | 9672 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9673 | { |
d51347f9 TB |
9674 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9675 | "specification part of a module"); | |
6de9cd9a DN |
9676 | return MATCH_ERROR; |
9677 | } | |
9678 | ||
524af0d6 | 9679 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9680 | return MATCH_ERROR; |
6de9cd9a | 9681 | } |
52f49934 | 9682 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9683 | { |
9684 | /* If the type is defined to be bind(c) it then needs to make | |
9685 | sure that all fields are interoperable. This will | |
9686 | need to be a semantic check on the finished derived type. | |
9687 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9688 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9689 | return MATCH_ERROR; |
9690 | ||
9691 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9692 | } | |
52f49934 DK |
9693 | else if (gfc_match (" , abstract") == MATCH_YES) |
9694 | { | |
524af0d6 | 9695 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9696 | return MATCH_ERROR; |
9697 | ||
524af0d6 | 9698 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9699 | return MATCH_ERROR; |
9700 | } | |
524af0d6 | 9701 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9702 | { |
524af0d6 | 9703 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9704 | return MATCH_ERROR; |
9705 | } | |
a8b3b0b6 CR |
9706 | else |
9707 | return MATCH_NO; | |
9708 | ||
9709 | /* If we get here, something matched. */ | |
9710 | return MATCH_YES; | |
9711 | } | |
9712 | ||
9713 | ||
f6288c24 FR |
9714 | /* Common function for type declaration blocks similar to derived types, such |
9715 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9716 | does NOT have a generic symbol matching the name given by the user. | |
9717 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9718 | for the creation of an independent symbol. | |
6442a6f4 | 9719 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9720 | type to be created, and the flavor to add to the resulting symbol. */ |
9721 | ||
9722 | static bool | |
9723 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9724 | gfc_symbol **result) | |
9725 | { | |
9726 | gfc_symbol *sym; | |
9727 | locus where; | |
9728 | ||
9729 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9730 | ||
9731 | if (decl) | |
9732 | where = *decl; | |
9733 | else | |
9734 | where = gfc_current_locus; | |
9735 | ||
9736 | if (gfc_get_symbol (name, NULL, &sym)) | |
9737 | return false; | |
9738 | ||
9739 | if (!sym) | |
9740 | { | |
9741 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9742 | return false; | |
9743 | } | |
9744 | ||
9745 | if (sym->components != NULL || sym->attr.zero_comp) | |
9746 | { | |
2f029c08 | 9747 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9748 | sym->name, &sym->declared_at); |
9749 | return false; | |
9750 | } | |
9751 | ||
9752 | sym->declared_at = where; | |
9753 | ||
9754 | if (sym->attr.flavor != fl | |
9755 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9756 | return false; | |
9757 | ||
9758 | if (!sym->hash_value) | |
9759 | /* Set the hash for the compound name for this type. */ | |
9760 | sym->hash_value = gfc_hash_value (sym); | |
9761 | ||
9762 | /* Normally the type is expected to have been completely parsed by the time | |
9763 | a field declaration with this type is seen. For unions, maps, and nested | |
9764 | structure declarations, we need to indicate that it is okay that we | |
9765 | haven't seen any components yet. This will be updated after the structure | |
9766 | is fully parsed. */ | |
9767 | sym->attr.zero_comp = 0; | |
9768 | ||
9769 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9770 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9771 | ||
9772 | if (result) *result = sym; | |
9773 | ||
9774 | return true; | |
9775 | } | |
9776 | ||
9777 | ||
9778 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9779 | behaves identical to STRUCTURE blocks. */ | |
9780 | ||
9781 | match | |
9782 | gfc_match_map (void) | |
9783 | { | |
05b8fcb4 FR |
9784 | /* Counter used to give unique internal names to map structures. */ |
9785 | static unsigned int gfc_map_id = 0; | |
9786 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9787 | gfc_symbol *sym; | |
9788 | locus old_loc; | |
f6288c24 | 9789 | |
05b8fcb4 | 9790 | old_loc = gfc_current_locus; |
f6288c24 | 9791 | |
05b8fcb4 FR |
9792 | if (gfc_match_eos () != MATCH_YES) |
9793 | { | |
9794 | gfc_error ("Junk after MAP statement at %C"); | |
9795 | gfc_current_locus = old_loc; | |
9796 | return MATCH_ERROR; | |
9797 | } | |
f6288c24 | 9798 | |
05b8fcb4 FR |
9799 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9800 | which are invalid Fortran identifiers. */ | |
9801 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9802 | |
05b8fcb4 FR |
9803 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9804 | return MATCH_ERROR; | |
f6288c24 | 9805 | |
05b8fcb4 | 9806 | gfc_new_block = sym; |
f6288c24 | 9807 | |
05b8fcb4 | 9808 | return MATCH_YES; |
f6288c24 FR |
9809 | } |
9810 | ||
9811 | ||
9812 | /* Match the opening of a UNION block. */ | |
9813 | ||
9814 | match | |
9815 | gfc_match_union (void) | |
9816 | { | |
05b8fcb4 FR |
9817 | /* Counter used to give unique internal names to union types. */ |
9818 | static unsigned int gfc_union_id = 0; | |
9819 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9820 | gfc_symbol *sym; | |
9821 | locus old_loc; | |
f6288c24 | 9822 | |
05b8fcb4 | 9823 | old_loc = gfc_current_locus; |
f6288c24 | 9824 | |
05b8fcb4 FR |
9825 | if (gfc_match_eos () != MATCH_YES) |
9826 | { | |
9827 | gfc_error ("Junk after UNION statement at %C"); | |
9828 | gfc_current_locus = old_loc; | |
9829 | return MATCH_ERROR; | |
9830 | } | |
f6288c24 | 9831 | |
05b8fcb4 FR |
9832 | /* Unions are anonymous so we make up unique names for the symbol table |
9833 | which are invalid Fortran identifiers. */ | |
9834 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9835 | |
05b8fcb4 FR |
9836 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9837 | return MATCH_ERROR; | |
f6288c24 | 9838 | |
05b8fcb4 | 9839 | gfc_new_block = sym; |
f6288c24 | 9840 | |
05b8fcb4 | 9841 | return MATCH_YES; |
f6288c24 FR |
9842 | } |
9843 | ||
9844 | ||
9845 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9846 | matching the beginning of a derived type declaration with a few | |
9847 | twists. The resulting type symbol has no access control or other | |
9848 | interesting attributes. */ | |
9849 | ||
9850 | match | |
9851 | gfc_match_structure_decl (void) | |
9852 | { | |
05b8fcb4 FR |
9853 | /* Counter used to give unique internal names to anonymous structures. */ |
9854 | static unsigned int gfc_structure_id = 0; | |
9855 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9856 | gfc_symbol *sym; | |
9857 | match m; | |
9858 | locus where; | |
f6288c24 | 9859 | |
05b8fcb4 FR |
9860 | if (!flag_dec_structure) |
9861 | { | |
cf004230 FR |
9862 | gfc_error ("%s at %C is a DEC extension, enable with " |
9863 | "%<-fdec-structure%>", | |
9864 | "STRUCTURE"); | |
05b8fcb4 FR |
9865 | return MATCH_ERROR; |
9866 | } | |
f6288c24 | 9867 | |
05b8fcb4 | 9868 | name[0] = '\0'; |
f6288c24 | 9869 | |
05b8fcb4 FR |
9870 | m = gfc_match (" /%n/", name); |
9871 | if (m != MATCH_YES) | |
9872 | { | |
9873 | /* Non-nested structure declarations require a structure name. */ | |
9874 | if (!gfc_comp_struct (gfc_current_state ())) | |
9875 | { | |
9876 | gfc_error ("Structure name expected in non-nested structure " | |
9877 | "declaration at %C"); | |
9878 | return MATCH_ERROR; | |
9879 | } | |
9880 | /* This is an anonymous structure; make up a unique name for it | |
9881 | (upper-case letters never make it to symbol names from the source). | |
9882 | The important thing is initializing the type variable | |
9883 | and setting gfc_new_symbol, which is immediately used by | |
9884 | parse_structure () and variable_decl () to add components of | |
9885 | this type. */ | |
9886 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9887 | } | |
f6288c24 | 9888 | |
05b8fcb4 FR |
9889 | where = gfc_current_locus; |
9890 | /* No field list allowed after non-nested structure declaration. */ | |
9891 | if (!gfc_comp_struct (gfc_current_state ()) | |
9892 | && gfc_match_eos () != MATCH_YES) | |
9893 | { | |
9894 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9895 | return MATCH_ERROR; | |
9896 | } | |
f6288c24 | 9897 | |
05b8fcb4 FR |
9898 | /* Make sure the name is not the name of an intrinsic type. */ |
9899 | if (gfc_is_intrinsic_typename (name)) | |
9900 | { | |
2f029c08 | 9901 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
9902 | " intrinsic type", name); |
9903 | return MATCH_ERROR; | |
9904 | } | |
f6288c24 | 9905 | |
05b8fcb4 FR |
9906 | /* Store the actual type symbol for the structure with an upper-case first |
9907 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 9908 | |
51f03c6b | 9909 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 9910 | return MATCH_ERROR; |
f6288c24 | 9911 | |
05b8fcb4 FR |
9912 | gfc_new_block = sym; |
9913 | return MATCH_YES; | |
f6288c24 FR |
9914 | } |
9915 | ||
90051c26 FR |
9916 | |
9917 | /* This function does some work to determine which matcher should be used to | |
58b9de9e | 9918 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
90051c26 | 9919 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
58b9de9e | 9920 | * and [parameterized] derived type declarations. */ |
90051c26 FR |
9921 | |
9922 | match | |
9923 | gfc_match_type (gfc_statement *st) | |
9924 | { | |
9925 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9926 | match m; | |
9927 | locus old_loc; | |
9928 | ||
9929 | /* Requires -fdec. */ | |
9930 | if (!flag_dec) | |
9931 | return MATCH_NO; | |
9932 | ||
9933 | m = gfc_match ("type"); | |
9934 | if (m != MATCH_YES) | |
9935 | return m; | |
9936 | /* If we already have an error in the buffer, it is probably from failing to | |
9937 | * match a derived type data declaration. Let it happen. */ | |
9938 | else if (gfc_error_flag_test ()) | |
9939 | return MATCH_NO; | |
9940 | ||
9941 | old_loc = gfc_current_locus; | |
9942 | *st = ST_NONE; | |
9943 | ||
9944 | /* If we see an attribute list before anything else it's definitely a derived | |
9945 | * type declaration. */ | |
9946 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
58b9de9e | 9947 | goto derived; |
90051c26 FR |
9948 | |
9949 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9950 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9951 | m = gfc_match_name (name); | |
9952 | if (m != MATCH_YES) | |
9953 | { | |
9954 | /* Let print match if it can, otherwise throw an error from | |
9955 | * gfc_match_derived_decl. */ | |
9956 | gfc_current_locus = old_loc; | |
9957 | if (gfc_match_print () == MATCH_YES) | |
9958 | { | |
9959 | *st = ST_WRITE; | |
9960 | return MATCH_YES; | |
9961 | } | |
58b9de9e | 9962 | goto derived; |
90051c26 FR |
9963 | } |
9964 | ||
58b9de9e FR |
9965 | /* Check for EOS. */ |
9966 | if (gfc_match_eos () == MATCH_YES) | |
90051c26 FR |
9967 | { |
9968 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9969 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9970 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9971 | * symbol which can be printed. */ | |
9972 | gfc_current_locus = old_loc; | |
9973 | m = gfc_match_derived_decl (); | |
9974 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9975 | { | |
9976 | *st = ST_DERIVED_DECL; | |
9977 | return m; | |
9978 | } | |
90051c26 | 9979 | } |
58b9de9e FR |
9980 | else |
9981 | { | |
9982 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
9983 | like <type name(parameter)>. */ | |
9984 | gfc_gobble_whitespace (); | |
9985 | bool paren = gfc_peek_ascii_char () == '('; | |
9986 | if (paren) | |
9987 | { | |
9988 | if (strcmp ("is", name) == 0) | |
9989 | goto typeis; | |
9990 | else | |
9991 | goto derived; | |
9992 | } | |
9993 | } | |
9994 | ||
9995 | /* Treat TYPE... like PRINT... */ | |
9996 | gfc_current_locus = old_loc; | |
9997 | *st = ST_WRITE; | |
9998 | return gfc_match_print (); | |
90051c26 | 9999 | |
58b9de9e FR |
10000 | derived: |
10001 | gfc_current_locus = old_loc; | |
10002 | *st = ST_DERIVED_DECL; | |
10003 | return gfc_match_derived_decl (); | |
10004 | ||
10005 | typeis: | |
10006 | gfc_current_locus = old_loc; | |
10007 | *st = ST_TYPE_IS; | |
10008 | return gfc_match_type_is (); | |
90051c26 FR |
10009 | } |
10010 | ||
10011 | ||
a8b3b0b6 CR |
10012 | /* Match the beginning of a derived type declaration. If a type name |
10013 | was the result of a function, then it is possible to have a symbol | |
10014 | already to be known as a derived type yet have no components. */ | |
10015 | ||
10016 | match | |
10017 | gfc_match_derived_decl (void) | |
10018 | { | |
10019 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 10020 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 10021 | symbol_attribute attr; |
c3f34952 | 10022 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 10023 | gfc_symbol *extended; |
a8b3b0b6 CR |
10024 | match m; |
10025 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 10026 | bool seen_attr = false; |
c3f34952 | 10027 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
10028 | bool parameterized_type = false; |
10029 | bool seen_colons = false; | |
a8b3b0b6 | 10030 | |
f6288c24 | 10031 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
10032 | return MATCH_NO; |
10033 | ||
7d1f1e61 PT |
10034 | name[0] = '\0'; |
10035 | parent[0] = '\0'; | |
a8b3b0b6 | 10036 | gfc_clear_attr (&attr); |
7d1f1e61 | 10037 | extended = NULL; |
a8b3b0b6 CR |
10038 | |
10039 | do | |
10040 | { | |
7d1f1e61 | 10041 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
10042 | if (is_type_attr_spec == MATCH_ERROR) |
10043 | return MATCH_ERROR; | |
e7303e85 FXC |
10044 | if (is_type_attr_spec == MATCH_YES) |
10045 | seen_attr = true; | |
a8b3b0b6 | 10046 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 10047 | |
63a3341a PT |
10048 | /* Deal with derived type extensions. The extension attribute has |
10049 | been added to 'attr' but now the parent type must be found and | |
10050 | checked. */ | |
7d1f1e61 PT |
10051 | if (parent[0]) |
10052 | extended = check_extended_derived_type (parent); | |
10053 | ||
10054 | if (parent[0] && !extended) | |
10055 | return MATCH_ERROR; | |
10056 | ||
5bab4c96 PT |
10057 | m = gfc_match (" ::"); |
10058 | if (m == MATCH_YES) | |
10059 | { | |
10060 | seen_colons = true; | |
10061 | } | |
10062 | else if (seen_attr) | |
6de9cd9a DN |
10063 | { |
10064 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10065 | return MATCH_ERROR; | |
10066 | } | |
10067 | ||
5bab4c96 | 10068 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
10069 | if (m != MATCH_YES) |
10070 | return m; | |
10071 | ||
5bab4c96 PT |
10072 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10073 | derived type named 'is'. | |
10074 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10075 | and checking if this is a(n intrinsic) typename. his picks up | |
10076 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10077 | if (gfc_peek_ascii_char () == '(') | |
10078 | { | |
10079 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10080 | || (!seen_colons && !strcmp (name, "is"))) | |
10081 | return MATCH_NO; | |
10082 | parameterized_type = true; | |
10083 | } | |
10084 | ||
10085 | m = gfc_match_eos (); | |
10086 | if (m != MATCH_YES && !parameterized_type) | |
10087 | return m; | |
10088 | ||
e9c06563 TB |
10089 | /* Make sure the name is not the name of an intrinsic type. */ |
10090 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 10091 | { |
c4100eae | 10092 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 10093 | "type", name); |
6de9cd9a DN |
10094 | return MATCH_ERROR; |
10095 | } | |
10096 | ||
c3f34952 | 10097 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
10098 | return MATCH_ERROR; |
10099 | ||
c3f34952 | 10100 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 10101 | { |
1072bff8 SK |
10102 | if (gensym->ts.u.derived) |
10103 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10104 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10105 | else | |
10106 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10107 | gensym->name); | |
c3f34952 TB |
10108 | return MATCH_ERROR; |
10109 | } | |
10110 | ||
10111 | if (!gensym->attr.generic | |
524af0d6 | 10112 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10113 | return MATCH_ERROR; |
10114 | ||
10115 | if (!gensym->attr.function | |
524af0d6 | 10116 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10117 | return MATCH_ERROR; |
10118 | ||
10119 | sym = gfc_find_dt_in_generic (gensym); | |
10120 | ||
10121 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10122 | { | |
c4100eae | 10123 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 10124 | "defined", sym->name); |
6de9cd9a DN |
10125 | return MATCH_ERROR; |
10126 | } | |
10127 | ||
c3f34952 TB |
10128 | if (!sym) |
10129 | { | |
10130 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 10131 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 10132 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
10133 | head = gensym->generic; |
10134 | intr = gfc_get_interface (); | |
10135 | intr->sym = sym; | |
10136 | intr->where = gfc_current_locus; | |
10137 | intr->sym->declared_at = gfc_current_locus; | |
10138 | intr->next = head; | |
10139 | gensym->generic = intr; | |
10140 | gensym->attr.if_source = IFSRC_DECL; | |
10141 | } | |
10142 | ||
6de9cd9a DN |
10143 | /* The symbol may already have the derived attribute without the |
10144 | components. The ways this can happen is via a function | |
10145 | definition, an INTRINSIC statement or a subtype in another | |
10146 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 10147 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 10148 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 10149 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
10150 | return MATCH_ERROR; |
10151 | ||
6de9cd9a | 10152 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 10153 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 10154 | return MATCH_ERROR; |
c3f34952 TB |
10155 | else if (sym->attr.access == ACCESS_UNKNOWN |
10156 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 10157 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 10158 | sym->name, NULL)) |
c3f34952 TB |
10159 | return MATCH_ERROR; |
10160 | ||
10161 | if (sym->attr.access != ACCESS_UNKNOWN | |
10162 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10163 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 10164 | |
a8b3b0b6 CR |
10165 | /* See if the derived type was labeled as bind(c). */ |
10166 | if (attr.is_bind_c != 0) | |
10167 | sym->attr.is_bind_c = attr.is_bind_c; | |
10168 | ||
34523524 DK |
10169 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10170 | if (!sym->f2k_derived) | |
10171 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 10172 | |
5bab4c96 PT |
10173 | if (parameterized_type) |
10174 | { | |
276515e6 PT |
10175 | /* Ignore error or mismatches by going to the end of the statement |
10176 | in order to avoid the component declarations causing problems. */ | |
10177 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10178 | if (m != MATCH_YES) | |
10179 | gfc_error_recovery (); | |
5bab4c96 PT |
10180 | m = gfc_match_eos (); |
10181 | if (m != MATCH_YES) | |
f59986b2 PT |
10182 | { |
10183 | gfc_error_recovery (); | |
10184 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10185 | } | |
5bab4c96 PT |
10186 | sym->attr.pdt_template = 1; |
10187 | } | |
10188 | ||
7d1f1e61 PT |
10189 | if (extended && !sym->components) |
10190 | { | |
10191 | gfc_component *p; | |
5bab4c96 | 10192 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
10193 | |
10194 | /* Add the extended derived type as the first component. */ | |
10195 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
10196 | extended->refs++; |
10197 | gfc_set_sym_referenced (extended); | |
10198 | ||
10199 | p->ts.type = BT_DERIVED; | |
bc21d315 | 10200 | p->ts.u.derived = extended; |
7d1f1e61 | 10201 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 10202 | |
7c1dab0d JW |
10203 | /* Set extension level. */ |
10204 | if (extended->attr.extension == 255) | |
10205 | { | |
10206 | /* Since the extension field is 8 bit wide, we can only have | |
10207 | up to 255 extension levels. */ | |
c4100eae | 10208 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
10209 | extended->name, &extended->declared_at); |
10210 | return MATCH_ERROR; | |
10211 | } | |
10212 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
10213 | |
10214 | /* Provide the links between the extended type and its extension. */ | |
10215 | if (!extended->f2k_derived) | |
10216 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
10217 | |
10218 | /* Copy the extended type-param-name-list from the extended type, | |
10219 | append those of the extension and add the whole lot to the | |
10220 | extension. */ | |
10221 | if (extended->attr.pdt_template) | |
10222 | { | |
10223 | g = h = NULL; | |
10224 | sym->attr.pdt_template = 1; | |
10225 | for (f = extended->formal; f; f = f->next) | |
10226 | { | |
10227 | if (f == extended->formal) | |
10228 | { | |
10229 | g = gfc_get_formal_arglist (); | |
10230 | h = g; | |
10231 | } | |
10232 | else | |
10233 | { | |
10234 | g->next = gfc_get_formal_arglist (); | |
10235 | g = g->next; | |
10236 | } | |
10237 | g->sym = f->sym; | |
10238 | } | |
10239 | g->next = sym->formal; | |
10240 | sym->formal = h; | |
10241 | } | |
7d1f1e61 PT |
10242 | } |
10243 | ||
7c1dab0d JW |
10244 | if (!sym->hash_value) |
10245 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10246 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10247 | |
52f49934 DK |
10248 | /* Take over the ABSTRACT attribute. */ |
10249 | sym->attr.abstract = attr.abstract; | |
10250 | ||
6de9cd9a DN |
10251 | gfc_new_block = sym; |
10252 | ||
10253 | return MATCH_YES; | |
10254 | } | |
83d890b9 AL |
10255 | |
10256 | ||
f5acf0f2 | 10257 | /* Cray Pointees can be declared as: |
b3aefde2 | 10258 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10259 | |
32e8bb8e | 10260 | match |
83d890b9 AL |
10261 | gfc_mod_pointee_as (gfc_array_spec *as) |
10262 | { | |
10263 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10264 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10265 | as->cp_was_assumed = true; |
83d890b9 AL |
10266 | else if (as->type == AS_ASSUMED_SHAPE) |
10267 | { | |
10268 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10269 | return MATCH_ERROR; | |
10270 | } | |
10271 | return MATCH_YES; | |
10272 | } | |
25d8f0a2 TS |
10273 | |
10274 | ||
f5acf0f2 PT |
10275 | /* Match the enum definition statement, here we are trying to match |
10276 | the first line of enum definition statement. | |
25d8f0a2 TS |
10277 | Returns MATCH_YES if match is found. */ |
10278 | ||
10279 | match | |
10280 | gfc_match_enum (void) | |
10281 | { | |
10282 | match m; | |
f5acf0f2 | 10283 | |
25d8f0a2 TS |
10284 | m = gfc_match_eos (); |
10285 | if (m != MATCH_YES) | |
10286 | return m; | |
10287 | ||
524af0d6 | 10288 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10289 | return MATCH_ERROR; |
10290 | ||
10291 | return MATCH_YES; | |
10292 | } | |
10293 | ||
10294 | ||
31224396 SK |
10295 | /* Returns an initializer whose value is one higher than the value of the |
10296 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10297 | initializers value will be set to zero. The initializer's kind | |
10298 | will be set to gfc_c_int_kind. | |
10299 | ||
10300 | If -fshort-enums is given, the appropriate kind will be selected | |
10301 | later after all enumerators have been parsed. A warning is issued | |
10302 | here if an initializer exceeds gfc_c_int_kind. */ | |
10303 | ||
10304 | static gfc_expr * | |
10305 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10306 | { | |
10307 | gfc_expr *result; | |
b7e75771 | 10308 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10309 | |
10310 | mpz_init (result->value.integer); | |
10311 | ||
10312 | if (last_initializer != NULL) | |
10313 | { | |
10314 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10315 | result->where = last_initializer->where; | |
10316 | ||
10317 | if (gfc_check_integer_range (result->value.integer, | |
10318 | gfc_c_int_kind) != ARITH_OK) | |
10319 | { | |
10320 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10321 | return NULL; | |
10322 | } | |
10323 | } | |
10324 | else | |
10325 | { | |
10326 | /* Control comes here, if it's the very first enumerator and no | |
10327 | initializer has been given. It will be initialized to zero. */ | |
10328 | mpz_set_si (result->value.integer, 0); | |
10329 | } | |
10330 | ||
10331 | return result; | |
10332 | } | |
10333 | ||
10334 | ||
6133c68a TS |
10335 | /* Match a variable name with an optional initializer. When this |
10336 | subroutine is called, a variable is expected to be parsed next. | |
10337 | Depending on what is happening at the moment, updates either the | |
10338 | symbol table or the current interface. */ | |
10339 | ||
10340 | static match | |
10341 | enumerator_decl (void) | |
10342 | { | |
10343 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10344 | gfc_expr *initializer; | |
10345 | gfc_array_spec *as = NULL; | |
10346 | gfc_symbol *sym; | |
10347 | locus var_locus; | |
10348 | match m; | |
524af0d6 | 10349 | bool t; |
6133c68a TS |
10350 | locus old_locus; |
10351 | ||
10352 | initializer = NULL; | |
10353 | old_locus = gfc_current_locus; | |
10354 | ||
10355 | /* When we get here, we've just matched a list of attributes and | |
10356 | maybe a type and a double colon. The next thing we expect to see | |
10357 | is the name of the symbol. */ | |
10358 | m = gfc_match_name (name); | |
10359 | if (m != MATCH_YES) | |
10360 | goto cleanup; | |
10361 | ||
10362 | var_locus = gfc_current_locus; | |
10363 | ||
10364 | /* OK, we've successfully matched the declaration. Now put the | |
10365 | symbol in the current namespace. If we fail to create the symbol, | |
10366 | bail out. */ | |
524af0d6 | 10367 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10368 | { |
10369 | m = MATCH_ERROR; | |
10370 | goto cleanup; | |
10371 | } | |
10372 | ||
10373 | /* The double colon must be present in order to have initializers. | |
10374 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10375 | if (colon_seen) | |
10376 | { | |
10377 | if (gfc_match_char ('=') == MATCH_YES) | |
10378 | { | |
10379 | m = gfc_match_init_expr (&initializer); | |
10380 | if (m == MATCH_NO) | |
10381 | { | |
10382 | gfc_error ("Expected an initialization expression at %C"); | |
10383 | m = MATCH_ERROR; | |
10384 | } | |
10385 | ||
10386 | if (m != MATCH_YES) | |
10387 | goto cleanup; | |
10388 | } | |
10389 | } | |
10390 | ||
10391 | /* If we do not have an initializer, the initialization value of the | |
10392 | previous enumerator (stored in last_initializer) is incremented | |
10393 | by 1 and is used to initialize the current enumerator. */ | |
10394 | if (initializer == NULL) | |
31224396 | 10395 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10396 | |
6133c68a TS |
10397 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10398 | { | |
01e64c3d JJ |
10399 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10400 | &var_locus); | |
d51347f9 | 10401 | m = MATCH_ERROR; |
6133c68a TS |
10402 | goto cleanup; |
10403 | } | |
10404 | ||
10405 | /* Store this current initializer, for the next enumerator variable | |
10406 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10407 | use last_initializer below. */ | |
10408 | last_initializer = initializer; | |
10409 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10410 | ||
10411 | /* Maintain enumerator history. */ | |
10412 | gfc_find_symbol (name, NULL, 0, &sym); | |
10413 | create_enum_history (sym, last_initializer); | |
10414 | ||
524af0d6 | 10415 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10416 | |
10417 | cleanup: | |
10418 | /* Free stuff up and return. */ | |
10419 | gfc_free_expr (initializer); | |
10420 | ||
10421 | return m; | |
10422 | } | |
10423 | ||
10424 | ||
66e4ab31 | 10425 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10426 | |
10427 | match | |
10428 | gfc_match_enumerator_def (void) | |
10429 | { | |
10430 | match m; | |
524af0d6 | 10431 | bool t; |
d51347f9 | 10432 | |
25d8f0a2 | 10433 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10434 | |
25d8f0a2 TS |
10435 | m = gfc_match (" enumerator"); |
10436 | if (m != MATCH_YES) | |
10437 | return m; | |
6133c68a TS |
10438 | |
10439 | m = gfc_match (" :: "); | |
10440 | if (m == MATCH_ERROR) | |
10441 | return m; | |
10442 | ||
10443 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10444 | |
25d8f0a2 TS |
10445 | if (gfc_current_state () != COMP_ENUM) |
10446 | { | |
10447 | gfc_error ("ENUM definition statement expected before %C"); | |
10448 | gfc_free_enum_history (); | |
10449 | return MATCH_ERROR; | |
10450 | } | |
10451 | ||
10452 | (¤t_ts)->type = BT_INTEGER; | |
10453 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10454 | |
6133c68a TS |
10455 | gfc_clear_attr (¤t_attr); |
10456 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10457 | if (!t) |
25d8f0a2 | 10458 | { |
6133c68a | 10459 | m = MATCH_ERROR; |
25d8f0a2 TS |
10460 | goto cleanup; |
10461 | } | |
10462 | ||
25d8f0a2 TS |
10463 | for (;;) |
10464 | { | |
6133c68a | 10465 | m = enumerator_decl (); |
25d8f0a2 | 10466 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10467 | { |
10468 | gfc_free_enum_history (); | |
10469 | goto cleanup; | |
10470 | } | |
25d8f0a2 TS |
10471 | if (m == MATCH_NO) |
10472 | break; | |
10473 | ||
10474 | if (gfc_match_eos () == MATCH_YES) | |
10475 | goto cleanup; | |
10476 | if (gfc_match_char (',') != MATCH_YES) | |
10477 | break; | |
10478 | } | |
10479 | ||
10480 | if (gfc_current_state () == COMP_ENUM) | |
10481 | { | |
10482 | gfc_free_enum_history (); | |
10483 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10484 | m = MATCH_ERROR; | |
10485 | } | |
10486 | ||
10487 | cleanup: | |
10488 | gfc_free_array_spec (current_as); | |
10489 | current_as = NULL; | |
10490 | return m; | |
10491 | ||
10492 | } | |
10493 | ||
f6fad28e | 10494 | |
30b608eb DK |
10495 | /* Match binding attributes. */ |
10496 | ||
10497 | static match | |
713485cc | 10498 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10499 | { |
10500 | bool found_passing = false; | |
713485cc | 10501 | bool seen_ptr = false; |
90661f26 | 10502 | match m = MATCH_YES; |
30b608eb | 10503 | |
eea58adb | 10504 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10505 | this case the defaults are in there. */ |
10506 | ba->access = ACCESS_UNKNOWN; | |
10507 | ba->pass_arg = NULL; | |
10508 | ba->pass_arg_num = 0; | |
10509 | ba->nopass = 0; | |
10510 | ba->non_overridable = 0; | |
b0e5fa94 | 10511 | ba->deferred = 0; |
90661f26 | 10512 | ba->ppc = ppc; |
30b608eb DK |
10513 | |
10514 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10515 | m = gfc_match_char (','); |
10516 | if (m == MATCH_NO) | |
10517 | goto done; | |
30b608eb DK |
10518 | |
10519 | do | |
10520 | { | |
e157f736 DK |
10521 | /* Access specifier. */ |
10522 | ||
10523 | m = gfc_match (" public"); | |
30b608eb DK |
10524 | if (m == MATCH_ERROR) |
10525 | goto error; | |
10526 | if (m == MATCH_YES) | |
10527 | { | |
e157f736 | 10528 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10529 | { |
e157f736 | 10530 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10531 | goto error; |
10532 | } | |
10533 | ||
e157f736 | 10534 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10535 | continue; |
10536 | } | |
10537 | ||
e157f736 | 10538 | m = gfc_match (" private"); |
30b608eb DK |
10539 | if (m == MATCH_ERROR) |
10540 | goto error; | |
10541 | if (m == MATCH_YES) | |
10542 | { | |
e157f736 | 10543 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10544 | { |
e157f736 | 10545 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10546 | goto error; |
10547 | } | |
10548 | ||
e157f736 | 10549 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10550 | continue; |
10551 | } | |
10552 | ||
e157f736 DK |
10553 | /* If inside GENERIC, the following is not allowed. */ |
10554 | if (!generic) | |
30b608eb | 10555 | { |
30b608eb | 10556 | |
e157f736 DK |
10557 | /* NOPASS flag. */ |
10558 | m = gfc_match (" nopass"); | |
10559 | if (m == MATCH_ERROR) | |
10560 | goto error; | |
10561 | if (m == MATCH_YES) | |
30b608eb | 10562 | { |
e157f736 DK |
10563 | if (found_passing) |
10564 | { | |
10565 | gfc_error ("Binding attributes already specify passing," | |
10566 | " illegal NOPASS at %C"); | |
10567 | goto error; | |
10568 | } | |
10569 | ||
10570 | found_passing = true; | |
10571 | ba->nopass = 1; | |
10572 | continue; | |
30b608eb DK |
10573 | } |
10574 | ||
e157f736 DK |
10575 | /* PASS possibly including argument. */ |
10576 | m = gfc_match (" pass"); | |
10577 | if (m == MATCH_ERROR) | |
10578 | goto error; | |
10579 | if (m == MATCH_YES) | |
30b608eb | 10580 | { |
e157f736 DK |
10581 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10582 | ||
10583 | if (found_passing) | |
10584 | { | |
10585 | gfc_error ("Binding attributes already specify passing," | |
10586 | " illegal PASS at %C"); | |
10587 | goto error; | |
10588 | } | |
10589 | ||
10590 | m = gfc_match (" ( %n )", arg); | |
10591 | if (m == MATCH_ERROR) | |
10592 | goto error; | |
10593 | if (m == MATCH_YES) | |
51f03c6b | 10594 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10595 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10596 | ||
10597 | found_passing = true; | |
10598 | ba->nopass = 0; | |
10599 | continue; | |
30b608eb DK |
10600 | } |
10601 | ||
713485cc JW |
10602 | if (ppc) |
10603 | { | |
10604 | /* POINTER flag. */ | |
10605 | m = gfc_match (" pointer"); | |
10606 | if (m == MATCH_ERROR) | |
10607 | goto error; | |
10608 | if (m == MATCH_YES) | |
10609 | { | |
10610 | if (seen_ptr) | |
10611 | { | |
10612 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10613 | goto error; | |
10614 | } | |
10615 | ||
10616 | seen_ptr = true; | |
713485cc JW |
10617 | continue; |
10618 | } | |
10619 | } | |
10620 | else | |
10621 | { | |
10622 | /* NON_OVERRIDABLE flag. */ | |
10623 | m = gfc_match (" non_overridable"); | |
10624 | if (m == MATCH_ERROR) | |
10625 | goto error; | |
10626 | if (m == MATCH_YES) | |
10627 | { | |
10628 | if (ba->non_overridable) | |
10629 | { | |
10630 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10631 | goto error; | |
10632 | } | |
10633 | ||
10634 | ba->non_overridable = 1; | |
10635 | continue; | |
10636 | } | |
10637 | ||
10638 | /* DEFERRED flag. */ | |
10639 | m = gfc_match (" deferred"); | |
10640 | if (m == MATCH_ERROR) | |
10641 | goto error; | |
10642 | if (m == MATCH_YES) | |
10643 | { | |
10644 | if (ba->deferred) | |
10645 | { | |
10646 | gfc_error ("Duplicate DEFERRED at %C"); | |
10647 | goto error; | |
10648 | } | |
10649 | ||
10650 | ba->deferred = 1; | |
10651 | continue; | |
10652 | } | |
10653 | } | |
10654 | ||
30b608eb DK |
10655 | } |
10656 | ||
10657 | /* Nothing matching found. */ | |
e157f736 DK |
10658 | if (generic) |
10659 | gfc_error ("Expected access-specifier at %C"); | |
10660 | else | |
10661 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10662 | goto error; |
10663 | } | |
10664 | while (gfc_match_char (',') == MATCH_YES); | |
10665 | ||
b0e5fa94 DK |
10666 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10667 | if (ba->non_overridable && ba->deferred) | |
10668 | { | |
10669 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10670 | goto error; | |
10671 | } | |
10672 | ||
90661f26 JW |
10673 | m = MATCH_YES; |
10674 | ||
10675 | done: | |
e157f736 | 10676 | if (ba->access == ACCESS_UNKNOWN) |
d4beaf2a JW |
10677 | ba->access = ppc ? gfc_current_block()->component_access |
10678 | : gfc_typebound_default_access; | |
e157f736 | 10679 | |
713485cc JW |
10680 | if (ppc && !seen_ptr) |
10681 | { | |
10682 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10683 | " at %C"); | |
10684 | goto error; | |
10685 | } | |
10686 | ||
90661f26 | 10687 | return m; |
30b608eb DK |
10688 | |
10689 | error: | |
30b608eb DK |
10690 | return MATCH_ERROR; |
10691 | } | |
10692 | ||
10693 | ||
10694 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10695 | ||
10696 | static match | |
10697 | match_procedure_in_type (void) | |
10698 | { | |
10699 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10700 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10701 | char* target = NULL, *ifc = NULL; |
3e15518b | 10702 | gfc_typebound_proc tb; |
30b608eb DK |
10703 | bool seen_colons; |
10704 | bool seen_attrs; | |
10705 | match m; | |
10706 | gfc_symtree* stree; | |
10707 | gfc_namespace* ns; | |
10708 | gfc_symbol* block; | |
1be17993 | 10709 | int num; |
30b608eb DK |
10710 | |
10711 | /* Check current state. */ | |
10712 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10713 | block = gfc_state_stack->previous->sym; | |
10714 | gcc_assert (block); | |
10715 | ||
b0e5fa94 | 10716 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10717 | if (gfc_match (" (") == MATCH_YES) |
10718 | { | |
b0e5fa94 DK |
10719 | m = gfc_match_name (target_buf); |
10720 | if (m == MATCH_ERROR) | |
10721 | return m; | |
10722 | if (m != MATCH_YES) | |
10723 | { | |
a4d9b221 | 10724 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10725 | return MATCH_ERROR; |
10726 | } | |
10727 | ||
10728 | if (gfc_match (" )") != MATCH_YES) | |
10729 | { | |
a4d9b221 | 10730 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10731 | return MATCH_ERROR; |
10732 | } | |
10733 | ||
1be17993 | 10734 | ifc = target_buf; |
30b608eb DK |
10735 | } |
10736 | ||
10737 | /* Construct the data structure. */ | |
ff5b6492 | 10738 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10739 | tb.where = gfc_current_locus; |
30b608eb DK |
10740 | |
10741 | /* Match binding attributes. */ | |
3e15518b | 10742 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10743 | if (m == MATCH_ERROR) |
10744 | return m; | |
10745 | seen_attrs = (m == MATCH_YES); | |
10746 | ||
1be17993 | 10747 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10748 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10749 | { |
10750 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10751 | return MATCH_ERROR; | |
10752 | } | |
3e15518b | 10753 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10754 | { |
10755 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10756 | return MATCH_ERROR; | |
10757 | } | |
10758 | ||
30b608eb DK |
10759 | /* Match the colons. */ |
10760 | m = gfc_match (" ::"); | |
10761 | if (m == MATCH_ERROR) | |
10762 | return m; | |
10763 | seen_colons = (m == MATCH_YES); | |
10764 | if (seen_attrs && !seen_colons) | |
10765 | { | |
a4d9b221 | 10766 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10767 | return MATCH_ERROR; |
10768 | } | |
10769 | ||
f5acf0f2 | 10770 | /* Match the binding names. */ |
1be17993 | 10771 | for(num=1;;num++) |
30b608eb | 10772 | { |
1be17993 JW |
10773 | m = gfc_match_name (name); |
10774 | if (m == MATCH_ERROR) | |
10775 | return m; | |
10776 | if (m == MATCH_NO) | |
b0e5fa94 | 10777 | { |
1be17993 | 10778 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10779 | return MATCH_ERROR; |
10780 | } | |
10781 | ||
524af0d6 | 10782 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10783 | return MATCH_ERROR; |
30b608eb | 10784 | |
1be17993 JW |
10785 | /* Try to match the '=> target', if it's there. */ |
10786 | target = ifc; | |
10787 | m = gfc_match (" =>"); | |
30b608eb DK |
10788 | if (m == MATCH_ERROR) |
10789 | return m; | |
1be17993 | 10790 | if (m == MATCH_YES) |
30b608eb | 10791 | { |
3e15518b | 10792 | if (tb.deferred) |
1be17993 | 10793 | { |
a4d9b221 | 10794 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10795 | return MATCH_ERROR; |
10796 | } | |
10797 | ||
10798 | if (!seen_colons) | |
10799 | { | |
a4d9b221 | 10800 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10801 | " at %C"); |
10802 | return MATCH_ERROR; | |
10803 | } | |
10804 | ||
10805 | m = gfc_match_name (target_buf); | |
10806 | if (m == MATCH_ERROR) | |
10807 | return m; | |
10808 | if (m == MATCH_NO) | |
10809 | { | |
a4d9b221 | 10810 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10811 | return MATCH_ERROR; |
10812 | } | |
10813 | target = target_buf; | |
30b608eb | 10814 | } |
30b608eb | 10815 | |
1be17993 JW |
10816 | /* If no target was found, it has the same name as the binding. */ |
10817 | if (!target) | |
10818 | target = name; | |
30b608eb | 10819 | |
1be17993 JW |
10820 | /* Get the namespace to insert the symbols into. */ |
10821 | ns = block->f2k_derived; | |
10822 | gcc_assert (ns); | |
30b608eb | 10823 | |
1be17993 | 10824 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10825 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10826 | { |
c4100eae | 10827 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10828 | "is not ABSTRACT", block->name); |
10829 | return MATCH_ERROR; | |
10830 | } | |
30b608eb | 10831 | |
1be17993 | 10832 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10833 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10834 | be already there but then typebound is still NULL. */ |
10835 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10836 | if (stree && stree->n.tb) |
1be17993 | 10837 | { |
c4100eae MLI |
10838 | gfc_error ("There is already a procedure with binding name %qs for " |
10839 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10840 | return MATCH_ERROR; |
10841 | } | |
b0e5fa94 | 10842 | |
1be17993 | 10843 | /* Insert it and set attributes. */ |
30b608eb | 10844 | |
9f23af48 MM |
10845 | if (!stree) |
10846 | { | |
10847 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10848 | gcc_assert (stree); | |
10849 | } | |
3e15518b | 10850 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 10851 | |
3e15518b JW |
10852 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10853 | false)) | |
1be17993 | 10854 | return MATCH_ERROR; |
3e15518b | 10855 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
10856 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10857 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 10858 | |
1be17993 JW |
10859 | if (gfc_match_eos () == MATCH_YES) |
10860 | return MATCH_YES; | |
10861 | if (gfc_match_char (',') != MATCH_YES) | |
10862 | goto syntax; | |
e34ccb4c | 10863 | } |
30b608eb | 10864 | |
1be17993 JW |
10865 | syntax: |
10866 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10867 | return MATCH_ERROR; | |
30b608eb DK |
10868 | } |
10869 | ||
10870 | ||
e157f736 DK |
10871 | /* Match a GENERIC procedure binding inside a derived type. */ |
10872 | ||
10873 | match | |
10874 | gfc_match_generic (void) | |
10875 | { | |
10876 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 10877 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
10878 | gfc_symbol* block; |
10879 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10880 | gfc_typebound_proc* tb; | |
e157f736 | 10881 | gfc_namespace* ns; |
94747289 DK |
10882 | interface_type op_type; |
10883 | gfc_intrinsic_op op; | |
e157f736 DK |
10884 | match m; |
10885 | ||
10886 | /* Check current state. */ | |
10887 | if (gfc_current_state () == COMP_DERIVED) | |
10888 | { | |
10889 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10890 | return MATCH_ERROR; | |
10891 | } | |
10892 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10893 | return MATCH_NO; | |
10894 | block = gfc_state_stack->previous->sym; | |
10895 | ns = block->f2k_derived; | |
10896 | gcc_assert (block && ns); | |
10897 | ||
ff5b6492 MM |
10898 | memset (&tbattr, 0, sizeof (tbattr)); |
10899 | tbattr.where = gfc_current_locus; | |
10900 | ||
e157f736 | 10901 | /* See if we get an access-specifier. */ |
713485cc | 10902 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
10903 | if (m == MATCH_ERROR) |
10904 | goto error; | |
10905 | ||
10906 | /* Now the colons, those are required. */ | |
10907 | if (gfc_match (" ::") != MATCH_YES) | |
10908 | { | |
a4d9b221 | 10909 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
10910 | goto error; |
10911 | } | |
10912 | ||
94747289 DK |
10913 | /* Match the binding name; depending on type (operator / generic) format |
10914 | it for future error messages into bind_name. */ | |
f5acf0f2 | 10915 | |
94747289 | 10916 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
10917 | if (m == MATCH_ERROR) |
10918 | return MATCH_ERROR; | |
10919 | if (m == MATCH_NO) | |
10920 | { | |
94747289 | 10921 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
10922 | goto error; |
10923 | } | |
10924 | ||
94747289 | 10925 | switch (op_type) |
e157f736 | 10926 | { |
94747289 | 10927 | case INTERFACE_GENERIC: |
e73d3ca6 | 10928 | case INTERFACE_DTIO: |
94747289 DK |
10929 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10930 | break; | |
f5acf0f2 | 10931 | |
94747289 DK |
10932 | case INTERFACE_USER_OP: |
10933 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10934 | break; | |
f5acf0f2 | 10935 | |
94747289 DK |
10936 | case INTERFACE_INTRINSIC_OP: |
10937 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10938 | gfc_op2string (op)); | |
10939 | break; | |
10940 | ||
377e37c1 SK |
10941 | case INTERFACE_NAMELESS: |
10942 | gfc_error ("Malformed GENERIC statement at %C"); | |
10943 | goto error; | |
10944 | break; | |
10945 | ||
94747289 DK |
10946 | default: |
10947 | gcc_unreachable (); | |
10948 | } | |
e34ccb4c | 10949 | |
94747289 DK |
10950 | /* Match the required =>. */ |
10951 | if (gfc_match (" =>") != MATCH_YES) | |
10952 | { | |
a4d9b221 | 10953 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
10954 | goto error; |
10955 | } | |
f5acf0f2 | 10956 | |
94747289 DK |
10957 | /* Try to find existing GENERIC binding with this name / for this operator; |
10958 | if there is something, check that it is another GENERIC and then extend | |
10959 | it rather than building a new node. Otherwise, create it and put it | |
10960 | at the right position. */ | |
10961 | ||
10962 | switch (op_type) | |
10963 | { | |
e73d3ca6 | 10964 | case INTERFACE_DTIO: |
94747289 DK |
10965 | case INTERFACE_USER_OP: |
10966 | case INTERFACE_GENERIC: | |
10967 | { | |
10968 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10969 | gfc_symtree* st; | |
10970 | ||
10971 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 10972 | tb = st ? st->n.tb : NULL; |
94747289 DK |
10973 | break; |
10974 | } | |
10975 | ||
10976 | case INTERFACE_INTRINSIC_OP: | |
10977 | tb = ns->tb_op[op]; | |
10978 | break; | |
10979 | ||
10980 | default: | |
10981 | gcc_unreachable (); | |
10982 | } | |
10983 | ||
10984 | if (tb) | |
10985 | { | |
e34ccb4c | 10986 | if (!tb->is_generic) |
e157f736 | 10987 | { |
94747289 | 10988 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 10989 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 10990 | " %qs for the derived type %qs at %C", |
94747289 | 10991 | bind_name, block->name); |
e157f736 DK |
10992 | goto error; |
10993 | } | |
10994 | ||
e157f736 DK |
10995 | if (tb->access != tbattr.access) |
10996 | { | |
10997 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 10998 | " defined binding %qs", bind_name); |
e157f736 DK |
10999 | goto error; |
11000 | } | |
11001 | } | |
11002 | else | |
11003 | { | |
3e15518b | 11004 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
11005 | tb->where = gfc_current_locus; |
11006 | tb->access = tbattr.access; | |
11007 | tb->is_generic = 1; | |
11008 | tb->u.generic = NULL; | |
94747289 DK |
11009 | |
11010 | switch (op_type) | |
11011 | { | |
e73d3ca6 | 11012 | case INTERFACE_DTIO: |
94747289 DK |
11013 | case INTERFACE_GENERIC: |
11014 | case INTERFACE_USER_OP: | |
11015 | { | |
11016 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
11017 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
11018 | &ns->tb_sym_root, name); | |
94747289 DK |
11019 | gcc_assert (st); |
11020 | st->n.tb = tb; | |
11021 | ||
11022 | break; | |
11023 | } | |
f5acf0f2 | 11024 | |
94747289 DK |
11025 | case INTERFACE_INTRINSIC_OP: |
11026 | ns->tb_op[op] = tb; | |
11027 | break; | |
11028 | ||
11029 | default: | |
11030 | gcc_unreachable (); | |
11031 | } | |
e157f736 DK |
11032 | } |
11033 | ||
11034 | /* Now, match all following names as specific targets. */ | |
11035 | do | |
11036 | { | |
11037 | gfc_symtree* target_st; | |
11038 | gfc_tbp_generic* target; | |
11039 | ||
11040 | m = gfc_match_name (name); | |
11041 | if (m == MATCH_ERROR) | |
11042 | goto error; | |
11043 | if (m == MATCH_NO) | |
11044 | { | |
11045 | gfc_error ("Expected specific binding name at %C"); | |
11046 | goto error; | |
11047 | } | |
11048 | ||
e34ccb4c | 11049 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
11050 | |
11051 | /* See if this is a duplicate specification. */ | |
11052 | for (target = tb->u.generic; target; target = target->next) | |
11053 | if (target_st == target->specific_st) | |
11054 | { | |
c4100eae MLI |
11055 | gfc_error ("%qs already defined as specific binding for the" |
11056 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
11057 | goto error; |
11058 | } | |
11059 | ||
e157f736 DK |
11060 | target = gfc_get_tbp_generic (); |
11061 | target->specific_st = target_st; | |
11062 | target->specific = NULL; | |
11063 | target->next = tb->u.generic; | |
218e1228 TB |
11064 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11065 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
11066 | tb->u.generic = target; |
11067 | } | |
11068 | while (gfc_match (" ,") == MATCH_YES); | |
11069 | ||
11070 | /* Here should be the end. */ | |
11071 | if (gfc_match_eos () != MATCH_YES) | |
11072 | { | |
11073 | gfc_error ("Junk after GENERIC binding at %C"); | |
11074 | goto error; | |
11075 | } | |
11076 | ||
11077 | return MATCH_YES; | |
11078 | ||
11079 | error: | |
11080 | return MATCH_ERROR; | |
11081 | } | |
11082 | ||
11083 | ||
34523524 DK |
11084 | /* Match a FINAL declaration inside a derived type. */ |
11085 | ||
11086 | match | |
11087 | gfc_match_final_decl (void) | |
11088 | { | |
11089 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11090 | gfc_symbol* sym; | |
11091 | match m; | |
11092 | gfc_namespace* module_ns; | |
11093 | bool first, last; | |
30b608eb | 11094 | gfc_symbol* block; |
34523524 | 11095 | |
33344e0f JW |
11096 | if (gfc_current_form == FORM_FREE) |
11097 | { | |
11098 | char c = gfc_peek_ascii_char (); | |
11099 | if (!gfc_is_whitespace (c) && c != ':') | |
11100 | return MATCH_NO; | |
11101 | } | |
f5acf0f2 | 11102 | |
30b608eb | 11103 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 11104 | { |
33344e0f JW |
11105 | if (gfc_current_form == FORM_FIXED) |
11106 | return MATCH_NO; | |
11107 | ||
34523524 | 11108 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 11109 | "CONTAINS section"); |
34523524 DK |
11110 | return MATCH_ERROR; |
11111 | } | |
11112 | ||
30b608eb DK |
11113 | block = gfc_state_stack->previous->sym; |
11114 | gcc_assert (block); | |
34523524 | 11115 | |
30b608eb DK |
11116 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11117 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
11118 | { |
11119 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11120 | " specification part of a MODULE"); | |
11121 | return MATCH_ERROR; | |
11122 | } | |
11123 | ||
11124 | module_ns = gfc_current_ns; | |
11125 | gcc_assert (module_ns); | |
11126 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11127 | ||
11128 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11129 | if (gfc_match (" ::") == MATCH_ERROR) | |
11130 | return MATCH_ERROR; | |
11131 | ||
11132 | /* Match the sequence of procedure names. */ | |
11133 | first = true; | |
11134 | last = false; | |
11135 | do | |
11136 | { | |
11137 | gfc_finalizer* f; | |
11138 | ||
11139 | if (first && gfc_match_eos () == MATCH_YES) | |
11140 | { | |
11141 | gfc_error ("Empty FINAL at %C"); | |
11142 | return MATCH_ERROR; | |
11143 | } | |
11144 | ||
11145 | m = gfc_match_name (name); | |
11146 | if (m == MATCH_NO) | |
11147 | { | |
11148 | gfc_error ("Expected module procedure name at %C"); | |
11149 | return MATCH_ERROR; | |
11150 | } | |
11151 | else if (m != MATCH_YES) | |
11152 | return MATCH_ERROR; | |
11153 | ||
11154 | if (gfc_match_eos () == MATCH_YES) | |
11155 | last = true; | |
11156 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11157 | { | |
a4d9b221 | 11158 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
11159 | return MATCH_ERROR; |
11160 | } | |
11161 | ||
11162 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11163 | { | |
c4100eae | 11164 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
11165 | return MATCH_ERROR; |
11166 | } | |
11167 | ||
11168 | /* Mark the symbol as module procedure. */ | |
11169 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 11170 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
11171 | return MATCH_ERROR; |
11172 | ||
11173 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 11174 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 11175 | if (f->proc_sym == sym) |
34523524 | 11176 | { |
546c8974 | 11177 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
11178 | name); |
11179 | return MATCH_ERROR; | |
11180 | } | |
11181 | ||
11182 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 11183 | gcc_assert (block->f2k_derived); |
2050626a | 11184 | sym->refs++; |
ece3f663 | 11185 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
11186 | f->proc_sym = sym; |
11187 | f->proc_tree = NULL; | |
34523524 | 11188 | f->where = gfc_current_locus; |
30b608eb DK |
11189 | f->next = block->f2k_derived->finalizers; |
11190 | block->f2k_derived->finalizers = f; | |
34523524 DK |
11191 | |
11192 | first = false; | |
11193 | } | |
11194 | while (!last); | |
11195 | ||
11196 | return MATCH_YES; | |
11197 | } | |
08a6b8e0 TB |
11198 | |
11199 | ||
11200 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
11201 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11202 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11203 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11204 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11205 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11206 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11207 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
11208 | }; |
11209 | ||
11210 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11211 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11212 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11213 | ||
11214 | TODO: We should support all GCC attributes using the same syntax for | |
11215 | the attribute list, i.e. the list in C | |
11216 | __attributes(( attribute-list )) | |
11217 | matches then | |
11218 | !GCC$ ATTRIBUTES attribute-list :: | |
11219 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11220 | saved into a TREE. | |
11221 | ||
11222 | As there is absolutely no risk of confusion, we should never return | |
11223 | MATCH_NO. */ | |
11224 | match | |
11225 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 11226 | { |
08a6b8e0 TB |
11227 | symbol_attribute attr; |
11228 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11229 | unsigned id; | |
11230 | gfc_symbol *sym; | |
11231 | match m; | |
11232 | ||
11233 | gfc_clear_attr (&attr); | |
11234 | for(;;) | |
11235 | { | |
11236 | char ch; | |
11237 | ||
11238 | if (gfc_match_name (name) != MATCH_YES) | |
11239 | return MATCH_ERROR; | |
11240 | ||
11241 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11242 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11243 | break; | |
11244 | ||
11245 | if (id == EXT_ATTR_LAST) | |
11246 | { | |
11247 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11248 | return MATCH_ERROR; | |
11249 | } | |
11250 | ||
524af0d6 | 11251 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11252 | return MATCH_ERROR; |
11253 | ||
11254 | gfc_gobble_whitespace (); | |
11255 | ch = gfc_next_ascii_char (); | |
11256 | if (ch == ':') | |
11257 | { | |
11258 | /* This is the successful exit condition for the loop. */ | |
11259 | if (gfc_next_ascii_char () == ':') | |
11260 | break; | |
11261 | } | |
11262 | ||
11263 | if (ch == ',') | |
11264 | continue; | |
11265 | ||
11266 | goto syntax; | |
11267 | } | |
11268 | ||
11269 | if (gfc_match_eos () == MATCH_YES) | |
11270 | goto syntax; | |
11271 | ||
11272 | for(;;) | |
11273 | { | |
11274 | m = gfc_match_name (name); | |
11275 | if (m != MATCH_YES) | |
11276 | return m; | |
11277 | ||
11278 | if (find_special (name, &sym, true)) | |
11279 | return MATCH_ERROR; | |
f5acf0f2 | 11280 | |
08a6b8e0 TB |
11281 | sym->attr.ext_attr |= attr.ext_attr; |
11282 | ||
11283 | if (gfc_match_eos () == MATCH_YES) | |
11284 | break; | |
11285 | ||
11286 | if (gfc_match_char (',') != MATCH_YES) | |
11287 | goto syntax; | |
11288 | } | |
11289 | ||
11290 | return MATCH_YES; | |
11291 | ||
11292 | syntax: | |
11293 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11294 | return MATCH_ERROR; | |
11295 | } | |
170a8bd6 EB |
11296 | |
11297 | ||
11298 | /* Match a !GCC$ UNROLL statement of the form: | |
11299 | !GCC$ UNROLL n | |
11300 | ||
11301 | The parameter n is the number of times we are supposed to unroll. | |
11302 | ||
11303 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11304 | match | |
11305 | gfc_match_gcc_unroll (void) | |
11306 | { | |
11307 | int value; | |
11308 | ||
11309 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11310 | { | |
11311 | if (value < 0 || value > USHRT_MAX) | |
11312 | { | |
11313 | gfc_error ("%<GCC unroll%> directive requires a" | |
11314 | " non-negative integral constant" | |
11315 | " less than or equal to %u at %C", | |
11316 | USHRT_MAX | |
11317 | ); | |
11318 | return MATCH_ERROR; | |
11319 | } | |
11320 | if (gfc_match_eos () == MATCH_YES) | |
11321 | { | |
11322 | directive_unroll = value == 0 ? 1 : value; | |
11323 | return MATCH_YES; | |
11324 | } | |
11325 | } | |
11326 | ||
11327 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11328 | return MATCH_ERROR; | |
11329 | } | |
facf0354 ML |
11330 | |
11331 | /* Match a !GCC$ builtin (b) attributes simd flags form: | |
11332 | ||
11333 | The parameter b is name of a middle-end built-in. | |
11334 | Flags are one of: | |
11335 | - (empty) | |
11336 | - inbranch | |
11337 | - notinbranch | |
11338 | ||
11339 | When we come here, we have already matched the !GCC$ builtin string. */ | |
11340 | match | |
11341 | gfc_match_gcc_builtin (void) | |
11342 | { | |
11343 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
11344 | ||
11345 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11346 | return MATCH_ERROR; | |
11347 | ||
11348 | gfc_simd_clause clause = SIMD_NONE; | |
11349 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11350 | clause = SIMD_NOTINBRANCH; | |
11351 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11352 | clause = SIMD_INBRANCH; | |
11353 | ||
11354 | if (gfc_vectorized_builtins == NULL) | |
11355 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11356 | ||
11357 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11358 | sprintf (r, "__builtin_%s", builtin); | |
11359 | ||
11360 | bool existed; | |
11361 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11362 | value |= clause; | |
11363 | if (existed) | |
11364 | free (r); | |
11365 | ||
11366 | return MATCH_YES; | |
11367 | } |