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6de9cd9a | 1 | /* Declaration statement matcher |
a5544970 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
2adfab87 AM |
24 | #include "options.h" |
25 | #include "tree.h" | |
6de9cd9a | 26 | #include "gfortran.h" |
2adfab87 | 27 | #include "stringpool.h" |
6de9cd9a DN |
28 | #include "match.h" |
29 | #include "parse.h" | |
b7e75771 | 30 | #include "constructor.h" |
e8cecccc | 31 | #include "target.h" |
ca39e6f2 FXC |
32 | |
33 | /* Macros to access allocate memory for gfc_data_variable, | |
34 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
35 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
36 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
37 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
38 | |
39 | ||
524af0d6 | 40 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
41 | |
42 | ||
2054fc29 | 43 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
44 | during a type-declaration statement. */ |
45 | ||
46 | static int old_char_selector; | |
47 | ||
46fa431d | 48 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
49 | statement, they get them from the following static variables. The |
50 | first part of a declaration sets these variables and the second | |
51 | part copies these into symbol structures. */ | |
52 | ||
53 | static gfc_typespec current_ts; | |
54 | ||
55 | static symbol_attribute current_attr; | |
56 | static gfc_array_spec *current_as; | |
57 | static int colon_seen; | |
6f855a26 | 58 | static int attr_seen; |
6de9cd9a | 59 | |
a8b3b0b6 | 60 | /* The current binding label (if any). */ |
9975a30b | 61 | static const char* curr_binding_label; |
a8b3b0b6 CR |
62 | /* Need to know how many identifiers are on the current data declaration |
63 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
64 | static int num_idents_on_line; | |
65 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
66 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
67 | static int has_name_equals = 0; | |
68 | ||
25d8f0a2 TS |
69 | /* Initializer of the previous enumerator. */ |
70 | ||
71 | static gfc_expr *last_initializer; | |
72 | ||
73 | /* History of all the enumerators is maintained, so that | |
74 | kind values of all the enumerators could be updated depending | |
75 | upon the maximum initialized value. */ | |
76 | ||
77 | typedef struct enumerator_history | |
78 | { | |
79 | gfc_symbol *sym; | |
80 | gfc_expr *initializer; | |
81 | struct enumerator_history *next; | |
82 | } | |
83 | enumerator_history; | |
84 | ||
85 | /* Header of enum history chain. */ | |
86 | ||
87 | static enumerator_history *enum_history = NULL; | |
88 | ||
89 | /* Pointer of enum history node containing largest initializer. */ | |
90 | ||
91 | static enumerator_history *max_enum = NULL; | |
92 | ||
6de9cd9a DN |
93 | /* gfc_new_block points to the symbol of a newly matched block. */ |
94 | ||
95 | gfc_symbol *gfc_new_block; | |
96 | ||
1c8bcdf7 | 97 | bool gfc_matching_function; |
e2d29968 | 98 | |
170a8bd6 EB |
99 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
100 | int directive_unroll = -1; | |
101 | ||
facf0354 ML |
102 | /* Map of middle-end built-ins that should be vectorized. */ |
103 | hash_map<nofree_string_hash, int> *gfc_vectorized_builtins; | |
104 | ||
5bab4c96 PT |
105 | /* If a kind expression of a component of a parameterized derived type is |
106 | parameterized, temporarily store the expression here. */ | |
107 | static gfc_expr *saved_kind_expr = NULL; | |
108 | ||
109 | /* Used to store the parameter list arising in a PDT declaration and | |
110 | in the typespec of a PDT variable or component. */ | |
111 | static gfc_actual_arglist *decl_type_param_list; | |
112 | static gfc_actual_arglist *type_param_spec_list; | |
113 | ||
294fbfc8 TS |
114 | /********************* DATA statement subroutines *********************/ |
115 | ||
2220652d PT |
116 | static bool in_match_data = false; |
117 | ||
118 | bool | |
119 | gfc_in_match_data (void) | |
120 | { | |
121 | return in_match_data; | |
122 | } | |
123 | ||
ca39e6f2 FXC |
124 | static void |
125 | set_in_match_data (bool set_value) | |
2220652d PT |
126 | { |
127 | in_match_data = set_value; | |
128 | } | |
129 | ||
294fbfc8 TS |
130 | /* Free a gfc_data_variable structure and everything beneath it. */ |
131 | ||
132 | static void | |
636dff67 | 133 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
134 | { |
135 | gfc_data_variable *q; | |
136 | ||
137 | for (; p; p = q) | |
138 | { | |
139 | q = p->next; | |
140 | gfc_free_expr (p->expr); | |
141 | gfc_free_iterator (&p->iter, 0); | |
142 | free_variable (p->list); | |
cede9502 | 143 | free (p); |
294fbfc8 TS |
144 | } |
145 | } | |
146 | ||
147 | ||
148 | /* Free a gfc_data_value structure and everything beneath it. */ | |
149 | ||
150 | static void | |
636dff67 | 151 | free_value (gfc_data_value *p) |
294fbfc8 TS |
152 | { |
153 | gfc_data_value *q; | |
154 | ||
155 | for (; p; p = q) | |
156 | { | |
157 | q = p->next; | |
c9d75a48 | 158 | mpz_clear (p->repeat); |
294fbfc8 | 159 | gfc_free_expr (p->expr); |
cede9502 | 160 | free (p); |
294fbfc8 TS |
161 | } |
162 | } | |
163 | ||
164 | ||
165 | /* Free a list of gfc_data structures. */ | |
166 | ||
167 | void | |
636dff67 | 168 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
169 | { |
170 | gfc_data *q; | |
171 | ||
172 | for (; p; p = q) | |
173 | { | |
174 | q = p->next; | |
294fbfc8 TS |
175 | free_variable (p->var); |
176 | free_value (p->value); | |
cede9502 | 177 | free (p); |
294fbfc8 TS |
178 | } |
179 | } | |
180 | ||
181 | ||
a9f6f1f2 | 182 | /* Free all data in a namespace. */ |
636dff67 | 183 | |
a9f6f1f2 | 184 | static void |
66e4ab31 | 185 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
186 | { |
187 | gfc_data *d; | |
188 | ||
189 | for (;ns->data;) | |
190 | { | |
191 | d = ns->data->next; | |
cede9502 | 192 | free (ns->data); |
a9f6f1f2 JD |
193 | ns->data = d; |
194 | } | |
195 | } | |
196 | ||
d5e2274d SB |
197 | /* Reject data parsed since the last restore point was marked. */ |
198 | ||
199 | void | |
200 | gfc_reject_data (gfc_namespace *ns) | |
201 | { | |
202 | gfc_data *d; | |
203 | ||
204 | while (ns->data && ns->data != ns->old_data) | |
205 | { | |
206 | d = ns->data->next; | |
207 | free (ns->data); | |
208 | ns->data = d; | |
209 | } | |
210 | } | |
a9f6f1f2 | 211 | |
294fbfc8 TS |
212 | static match var_element (gfc_data_variable *); |
213 | ||
214 | /* Match a list of variables terminated by an iterator and a right | |
215 | parenthesis. */ | |
216 | ||
217 | static match | |
636dff67 | 218 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
219 | { |
220 | gfc_data_variable *tail, var; | |
221 | match m; | |
222 | ||
223 | m = var_element (&var); | |
224 | if (m == MATCH_ERROR) | |
225 | return MATCH_ERROR; | |
226 | if (m == MATCH_NO) | |
227 | goto syntax; | |
228 | ||
229 | tail = gfc_get_data_variable (); | |
230 | *tail = var; | |
231 | ||
232 | parent->list = tail; | |
233 | ||
234 | for (;;) | |
235 | { | |
236 | if (gfc_match_char (',') != MATCH_YES) | |
237 | goto syntax; | |
238 | ||
239 | m = gfc_match_iterator (&parent->iter, 1); | |
240 | if (m == MATCH_YES) | |
241 | break; | |
242 | if (m == MATCH_ERROR) | |
243 | return MATCH_ERROR; | |
244 | ||
245 | m = var_element (&var); | |
246 | if (m == MATCH_ERROR) | |
247 | return MATCH_ERROR; | |
248 | if (m == MATCH_NO) | |
249 | goto syntax; | |
250 | ||
251 | tail->next = gfc_get_data_variable (); | |
252 | tail = tail->next; | |
253 | ||
254 | *tail = var; | |
255 | } | |
256 | ||
257 | if (gfc_match_char (')') != MATCH_YES) | |
258 | goto syntax; | |
259 | return MATCH_YES; | |
260 | ||
261 | syntax: | |
262 | gfc_syntax_error (ST_DATA); | |
263 | return MATCH_ERROR; | |
264 | } | |
265 | ||
266 | ||
267 | /* Match a single element in a data variable list, which can be a | |
268 | variable-iterator list. */ | |
269 | ||
270 | static match | |
7b901ac4 | 271 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
272 | { |
273 | match m; | |
274 | gfc_symbol *sym; | |
275 | ||
7b901ac4 | 276 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
277 | |
278 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 279 | return var_list (new_var); |
294fbfc8 | 280 | |
7b901ac4 | 281 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
282 | if (m != MATCH_YES) |
283 | return m; | |
284 | ||
094a0ecc SK |
285 | if (new_var->expr->expr_type == EXPR_CONSTANT |
286 | && new_var->expr->symtree == NULL) | |
287 | { | |
288 | gfc_error ("Inquiry parameter cannot appear in a " | |
289 | "data-stmt-object-list at %C"); | |
290 | return MATCH_ERROR; | |
291 | } | |
292 | ||
7b901ac4 | 293 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 294 | |
f37e928c | 295 | /* Symbol should already have an associated type. */ |
524af0d6 | 296 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
297 | return MATCH_ERROR; |
298 | ||
636dff67 SK |
299 | if (!sym->attr.function && gfc_current_ns->parent |
300 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 301 | { |
c4100eae | 302 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 303 | "statement at %C", sym->name); |
294fbfc8 TS |
304 | return MATCH_ERROR; |
305 | } | |
306 | ||
4075a94e | 307 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 308 | && sym->attr.in_common |
524af0d6 | 309 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 310 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 311 | sym->name)) |
4075a94e | 312 | return MATCH_ERROR; |
294fbfc8 | 313 | |
524af0d6 | 314 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
315 | return MATCH_ERROR; |
316 | ||
317 | return MATCH_YES; | |
318 | } | |
319 | ||
320 | ||
321 | /* Match the top-level list of data variables. */ | |
322 | ||
323 | static match | |
636dff67 | 324 | top_var_list (gfc_data *d) |
294fbfc8 | 325 | { |
7b901ac4 | 326 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
327 | match m; |
328 | ||
329 | tail = NULL; | |
330 | ||
331 | for (;;) | |
332 | { | |
333 | m = var_element (&var); | |
334 | if (m == MATCH_NO) | |
335 | goto syntax; | |
336 | if (m == MATCH_ERROR) | |
337 | return MATCH_ERROR; | |
338 | ||
7b901ac4 KG |
339 | new_var = gfc_get_data_variable (); |
340 | *new_var = var; | |
bebf94af SK |
341 | if (new_var->expr) |
342 | new_var->expr->where = gfc_current_locus; | |
294fbfc8 TS |
343 | |
344 | if (tail == NULL) | |
7b901ac4 | 345 | d->var = new_var; |
294fbfc8 | 346 | else |
7b901ac4 | 347 | tail->next = new_var; |
294fbfc8 | 348 | |
7b901ac4 | 349 | tail = new_var; |
294fbfc8 TS |
350 | |
351 | if (gfc_match_char ('/') == MATCH_YES) | |
352 | break; | |
353 | if (gfc_match_char (',') != MATCH_YES) | |
354 | goto syntax; | |
355 | } | |
356 | ||
357 | return MATCH_YES; | |
358 | ||
359 | syntax: | |
360 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 361 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
362 | return MATCH_ERROR; |
363 | } | |
364 | ||
365 | ||
366 | static match | |
636dff67 | 367 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
368 | { |
369 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 370 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
371 | gfc_expr *expr; |
372 | match m; | |
36d3fb4c | 373 | locus old_loc; |
294fbfc8 TS |
374 | |
375 | m = gfc_match_literal_constant (&expr, 1); | |
376 | if (m == MATCH_YES) | |
377 | { | |
378 | *result = expr; | |
379 | return MATCH_YES; | |
380 | } | |
381 | ||
382 | if (m == MATCH_ERROR) | |
383 | return MATCH_ERROR; | |
384 | ||
385 | m = gfc_match_null (result); | |
386 | if (m != MATCH_NO) | |
387 | return m; | |
388 | ||
36d3fb4c PT |
389 | old_loc = gfc_current_locus; |
390 | ||
391 | /* Should this be a structure component, try to match it | |
392 | before matching a name. */ | |
393 | m = gfc_match_rvalue (result); | |
394 | if (m == MATCH_ERROR) | |
395 | return m; | |
396 | ||
397 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
398 | { | |
524af0d6 | 399 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
400 | m = MATCH_ERROR; |
401 | return m; | |
402 | } | |
46f4f794 | 403 | else if (m == MATCH_YES) |
b6e841a6 | 404 | { |
19adb97a SK |
405 | /* If a parameter inquiry ends up here, symtree is NULL but **result |
406 | contains the right constant expression. Check here. */ | |
407 | if ((*result)->symtree == NULL | |
408 | && (*result)->expr_type == EXPR_CONSTANT | |
0a524296 | 409 | && ((*result)->ts.type == BT_INTEGER |
19adb97a SK |
410 | || (*result)->ts.type == BT_REAL)) |
411 | return m; | |
412 | ||
b6e841a6 SK |
413 | /* F2018:R845 data-stmt-constant is initial-data-target. |
414 | A data-stmt-constant shall be ... initial-data-target if and | |
415 | only if the corresponding data-stmt-object has the POINTER | |
416 | attribute. ... If data-stmt-constant is initial-data-target | |
417 | the corresponding data statement object shall be | |
418 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
419 | data target; the data statement object is initially associated | |
420 | with the target. */ | |
421 | if ((*result)->symtree->n.sym->attr.save | |
422 | && (*result)->symtree->n.sym->attr.target) | |
423 | return m; | |
424 | gfc_free_expr (*result); | |
425 | } | |
36d3fb4c PT |
426 | |
427 | gfc_current_locus = old_loc; | |
428 | ||
294fbfc8 TS |
429 | m = gfc_match_name (name); |
430 | if (m != MATCH_YES) | |
431 | return m; | |
432 | ||
433 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
434 | return MATCH_ERROR; | |
435 | ||
c3f34952 TB |
436 | if (sym && sym->attr.generic) |
437 | dt_sym = gfc_find_dt_in_generic (sym); | |
438 | ||
294fbfc8 | 439 | if (sym == NULL |
c3f34952 | 440 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 441 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 442 | { |
c4100eae | 443 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 444 | name); |
89f1f37e | 445 | *result = NULL; |
294fbfc8 TS |
446 | return MATCH_ERROR; |
447 | } | |
f6288c24 | 448 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 449 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 450 | |
d46e0870 JD |
451 | /* Check to see if the value is an initialization array expression. */ |
452 | if (sym->value->expr_type == EXPR_ARRAY) | |
453 | { | |
454 | gfc_current_locus = old_loc; | |
455 | ||
456 | m = gfc_match_init_expr (result); | |
457 | if (m == MATCH_ERROR) | |
458 | return m; | |
459 | ||
460 | if (m == MATCH_YES) | |
461 | { | |
524af0d6 | 462 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
463 | m = MATCH_ERROR; |
464 | ||
465 | if ((*result)->expr_type == EXPR_CONSTANT) | |
466 | return m; | |
467 | else | |
468 | { | |
469 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
470 | return MATCH_ERROR; | |
471 | } | |
472 | } | |
473 | } | |
474 | ||
294fbfc8 TS |
475 | *result = gfc_copy_expr (sym->value); |
476 | return MATCH_YES; | |
477 | } | |
478 | ||
479 | ||
480 | /* Match a list of values in a DATA statement. The leading '/' has | |
481 | already been seen at this point. */ | |
482 | ||
483 | static match | |
636dff67 | 484 | top_val_list (gfc_data *data) |
294fbfc8 | 485 | { |
7b901ac4 | 486 | gfc_data_value *new_val, *tail; |
294fbfc8 | 487 | gfc_expr *expr; |
294fbfc8 TS |
488 | match m; |
489 | ||
490 | tail = NULL; | |
491 | ||
492 | for (;;) | |
493 | { | |
494 | m = match_data_constant (&expr); | |
495 | if (m == MATCH_NO) | |
496 | goto syntax; | |
497 | if (m == MATCH_ERROR) | |
498 | return MATCH_ERROR; | |
499 | ||
7b901ac4 KG |
500 | new_val = gfc_get_data_value (); |
501 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
502 | |
503 | if (tail == NULL) | |
7b901ac4 | 504 | data->value = new_val; |
294fbfc8 | 505 | else |
7b901ac4 | 506 | tail->next = new_val; |
294fbfc8 | 507 | |
7b901ac4 | 508 | tail = new_val; |
294fbfc8 TS |
509 | |
510 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
511 | { | |
512 | tail->expr = expr; | |
f2112868 | 513 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
514 | } |
515 | else | |
516 | { | |
46f4f794 | 517 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 518 | gfc_free_expr (expr); |
294fbfc8 TS |
519 | |
520 | m = match_data_constant (&tail->expr); | |
521 | if (m == MATCH_NO) | |
522 | goto syntax; | |
523 | if (m == MATCH_ERROR) | |
524 | return MATCH_ERROR; | |
525 | } | |
526 | ||
527 | if (gfc_match_char ('/') == MATCH_YES) | |
528 | break; | |
529 | if (gfc_match_char (',') == MATCH_NO) | |
530 | goto syntax; | |
531 | } | |
532 | ||
533 | return MATCH_YES; | |
534 | ||
535 | syntax: | |
536 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 537 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
538 | return MATCH_ERROR; |
539 | } | |
540 | ||
541 | ||
542 | /* Matches an old style initialization. */ | |
543 | ||
544 | static match | |
545 | match_old_style_init (const char *name) | |
546 | { | |
547 | match m; | |
548 | gfc_symtree *st; | |
ed0e3607 | 549 | gfc_symbol *sym; |
8dc63166 | 550 | gfc_data *newdata, *nd; |
294fbfc8 TS |
551 | |
552 | /* Set up data structure to hold initializers. */ | |
553 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
554 | sym = st->n.sym; |
555 | ||
294fbfc8 TS |
556 | newdata = gfc_get_data (); |
557 | newdata->var = gfc_get_data_variable (); | |
558 | newdata->var->expr = gfc_get_variable_expr (st); | |
e11449d1 | 559 | newdata->var->expr->where = sym->declared_at; |
8c5c0b80 | 560 | newdata->where = gfc_current_locus; |
294fbfc8 | 561 | |
66e4ab31 | 562 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
563 | m = top_val_list (newdata); |
564 | if (m != MATCH_YES) | |
565 | { | |
cede9502 | 566 | free (newdata); |
294fbfc8 TS |
567 | return m; |
568 | } | |
569 | ||
8dc63166 SK |
570 | /* Check that a BOZ did not creep into an old-style initialization. */ |
571 | for (nd = newdata; nd; nd = nd->next) | |
572 | { | |
573 | if (nd->value->expr->ts.type == BT_BOZ | |
574 | && gfc_invalid_boz ("BOZ at %L cannot appear in an old-style " | |
575 | "initialization", &nd->value->expr->where)) | |
576 | return MATCH_ERROR; | |
577 | ||
578 | if (nd->var->expr->ts.type != BT_INTEGER | |
579 | && nd->var->expr->ts.type != BT_REAL | |
580 | && nd->value->expr->ts.type == BT_BOZ) | |
581 | { | |
582 | gfc_error ("Mismatch in variable type and BOZ literal constant " | |
583 | "at %L in an old-style initialization", | |
584 | &nd->value->expr->where); | |
585 | return MATCH_ERROR; | |
586 | } | |
587 | } | |
588 | ||
294fbfc8 TS |
589 | if (gfc_pure (NULL)) |
590 | { | |
591 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 592 | free (newdata); |
294fbfc8 TS |
593 | return MATCH_ERROR; |
594 | } | |
ccd7751b | 595 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 596 | |
ed0e3607 | 597 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 598 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 599 | { |
cede9502 | 600 | free (newdata); |
ed0e3607 AL |
601 | return MATCH_ERROR; |
602 | } | |
603 | ||
294fbfc8 TS |
604 | /* Chain in namespace list of DATA initializers. */ |
605 | newdata->next = gfc_current_ns->data; | |
606 | gfc_current_ns->data = newdata; | |
607 | ||
608 | return m; | |
609 | } | |
610 | ||
636dff67 | 611 | |
294fbfc8 | 612 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 613 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 614 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 615 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
616 | |
617 | match | |
618 | gfc_match_data (void) | |
619 | { | |
7b901ac4 | 620 | gfc_data *new_data; |
02543f02 | 621 | gfc_expr *e; |
bebf94af | 622 | gfc_ref *ref; |
294fbfc8 | 623 | match m; |
623c32bc SK |
624 | char c; |
625 | ||
626 | /* DATA has been matched. In free form source code, the next character | |
719f5a10 SK |
627 | needs to be whitespace or '(' from an implied do-loop. Check that |
628 | here. */ | |
623c32bc | 629 | c = gfc_peek_ascii_char (); |
719f5a10 | 630 | if (gfc_current_form == FORM_FREE && !gfc_is_whitespace (c) && c != '(') |
623c32bc | 631 | return MATCH_NO; |
294fbfc8 | 632 | |
5f0ba745 SK |
633 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
634 | if ((gfc_current_state () == COMP_FUNCTION | |
635 | || gfc_current_state () == COMP_SUBROUTINE) | |
636 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
637 | { | |
638 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
639 | return MATCH_ERROR; | |
640 | } | |
641 | ||
ca39e6f2 | 642 | set_in_match_data (true); |
2220652d | 643 | |
294fbfc8 TS |
644 | for (;;) |
645 | { | |
7b901ac4 KG |
646 | new_data = gfc_get_data (); |
647 | new_data->where = gfc_current_locus; | |
294fbfc8 | 648 | |
7b901ac4 | 649 | m = top_var_list (new_data); |
294fbfc8 TS |
650 | if (m != MATCH_YES) |
651 | goto cleanup; | |
652 | ||
c034c38f SK |
653 | if (new_data->var->iter.var |
654 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
655 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
656 | && new_data->var->list | |
657 | && new_data->var->list->expr | |
658 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
659 | && new_data->var->list->expr->ref | |
660 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
661 | { | |
662 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
663 | "statement", &new_data->var->list->expr->where); | |
664 | goto cleanup; | |
665 | } | |
666 | ||
02543f02 SK |
667 | /* Check for an entity with an allocatable component, which is not |
668 | allowed. */ | |
669 | e = new_data->var->expr; | |
670 | if (e) | |
671 | { | |
672 | bool invalid; | |
673 | ||
674 | invalid = false; | |
bebf94af | 675 | for (ref = e->ref; ref; ref = ref->next) |
02543f02 SK |
676 | if ((ref->type == REF_COMPONENT |
677 | && ref->u.c.component->attr.allocatable) | |
678 | || (ref->type == REF_ARRAY | |
679 | && e->symtree->n.sym->attr.pointer != 1 | |
680 | && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED)) | |
681 | invalid = true; | |
682 | ||
683 | if (invalid) | |
684 | { | |
685 | gfc_error ("Allocatable component or deferred-shaped array " | |
686 | "near %C in DATA statement"); | |
687 | goto cleanup; | |
688 | } | |
bebf94af SK |
689 | |
690 | /* F2008:C567 (R536) A data-i-do-object or a variable that appears | |
691 | as a data-stmt-object shall not be an object designator in which | |
692 | a pointer appears other than as the entire rightmost part-ref. */ | |
693 | ref = e->ref; | |
694 | if (e->symtree->n.sym->ts.type == BT_DERIVED | |
695 | && e->symtree->n.sym->attr.pointer | |
696 | && ref->type == REF_COMPONENT) | |
697 | goto partref; | |
698 | ||
699 | for (; ref; ref = ref->next) | |
700 | if (ref->type == REF_COMPONENT | |
701 | && ref->u.c.component->attr.pointer | |
702 | && ref->next) | |
703 | goto partref; | |
02543f02 SK |
704 | } |
705 | ||
7b901ac4 | 706 | m = top_val_list (new_data); |
294fbfc8 TS |
707 | if (m != MATCH_YES) |
708 | goto cleanup; | |
709 | ||
7b901ac4 KG |
710 | new_data->next = gfc_current_ns->data; |
711 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
712 | |
713 | if (gfc_match_eos () == MATCH_YES) | |
714 | break; | |
715 | ||
716 | gfc_match_char (','); /* Optional comma */ | |
717 | } | |
718 | ||
ca39e6f2 | 719 | set_in_match_data (false); |
2220652d | 720 | |
294fbfc8 TS |
721 | if (gfc_pure (NULL)) |
722 | { | |
723 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
724 | return MATCH_ERROR; | |
725 | } | |
ccd7751b | 726 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 727 | |
294fbfc8 TS |
728 | return MATCH_YES; |
729 | ||
bebf94af SK |
730 | partref: |
731 | ||
732 | gfc_error ("part-ref with pointer attribute near %L is not " | |
733 | "rightmost part-ref of data-stmt-object", | |
734 | &e->where); | |
735 | ||
294fbfc8 | 736 | cleanup: |
ca39e6f2 | 737 | set_in_match_data (false); |
7b901ac4 | 738 | gfc_free_data (new_data); |
294fbfc8 TS |
739 | return MATCH_ERROR; |
740 | } | |
741 | ||
742 | ||
743 | /************************ Declaration statements *********************/ | |
744 | ||
d3a9eea2 | 745 | |
f6288c24 FR |
746 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
747 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 748 | and is surrounded by '/'. |
f6288c24 FR |
749 | The typespec ts must match the typespec of the variable which the |
750 | clist is initializing. | |
6442a6f4 | 751 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
752 | corresponding to array elements or a scalar (as == NULL). */ |
753 | ||
754 | static match | |
755 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
756 | { | |
757 | gfc_constructor_base array_head = NULL; | |
758 | gfc_expr *expr = NULL; | |
e11449d1 | 759 | match m = MATCH_ERROR; |
f6288c24 | 760 | locus where; |
9b24c104 | 761 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
762 | bool scalar; |
763 | int cmp; | |
764 | ||
765 | gcc_assert (ts); | |
766 | ||
f6288c24 FR |
767 | /* We have already matched '/' - now look for a constant list, as with |
768 | top_val_list from decl.c, but append the result to an array. */ | |
769 | if (gfc_match ("/") == MATCH_YES) | |
770 | { | |
771 | gfc_error ("Empty old style initializer list at %C"); | |
e11449d1 | 772 | return MATCH_ERROR; |
f6288c24 FR |
773 | } |
774 | ||
775 | where = gfc_current_locus; | |
e11449d1 FR |
776 | scalar = !as || !as->rank; |
777 | ||
778 | if (!scalar && !spec_size (as, &as_size)) | |
779 | { | |
780 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
781 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
782 | /* Nothing to cleanup yet. */ | |
783 | return MATCH_ERROR; | |
784 | } | |
785 | ||
786 | mpz_init_set_ui (repeat, 0); | |
787 | ||
f6288c24 FR |
788 | for (;;) |
789 | { | |
790 | m = match_data_constant (&expr); | |
791 | if (m != MATCH_YES) | |
792 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
793 | if (m == MATCH_NO) | |
794 | goto syntax; | |
795 | if (m == MATCH_ERROR) | |
796 | goto cleanup; | |
797 | ||
798 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
799 | if ( gfc_match_char ('*') == MATCH_YES) | |
800 | { | |
801 | if (scalar) | |
802 | { | |
803 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
804 | goto cleanup; | |
805 | } | |
806 | if (expr->ts.type != BT_INTEGER) | |
807 | { | |
808 | gfc_error ("Repeat spec must be an integer at %C"); | |
809 | goto cleanup; | |
810 | } | |
811 | mpz_set (repeat, expr->value.integer); | |
812 | gfc_free_expr (expr); | |
813 | expr = NULL; | |
814 | ||
815 | m = match_data_constant (&expr); | |
816 | if (m == MATCH_NO) | |
e11449d1 FR |
817 | { |
818 | m = MATCH_ERROR; | |
819 | gfc_error ("Expected data constant after repeat spec at %C"); | |
820 | } | |
f6288c24 FR |
821 | if (m != MATCH_YES) |
822 | goto cleanup; | |
823 | } | |
824 | /* No repeat spec, we matched the data constant itself. */ | |
825 | else | |
826 | mpz_set_ui (repeat, 1); | |
827 | ||
828 | if (!scalar) | |
829 | { | |
830 | /* Add the constant initializer as many times as repeated. */ | |
831 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
832 | { | |
833 | /* Make sure types of elements match */ | |
834 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
835 | && !gfc_convert_type (expr, ts, 1)) | |
836 | goto cleanup; | |
837 | ||
838 | gfc_constructor_append_expr (&array_head, | |
839 | gfc_copy_expr (expr), &gfc_current_locus); | |
840 | } | |
841 | ||
842 | gfc_free_expr (expr); | |
843 | expr = NULL; | |
844 | } | |
845 | ||
846 | /* For scalar initializers quit after one element. */ | |
847 | else | |
848 | { | |
849 | if(gfc_match_char ('/') != MATCH_YES) | |
850 | { | |
851 | gfc_error ("End of scalar initializer expected at %C"); | |
852 | goto cleanup; | |
853 | } | |
854 | break; | |
855 | } | |
856 | ||
857 | if (gfc_match_char ('/') == MATCH_YES) | |
858 | break; | |
859 | if (gfc_match_char (',') == MATCH_NO) | |
860 | goto syntax; | |
861 | } | |
862 | ||
e11449d1 FR |
863 | /* If we break early from here out, we encountered an error. */ |
864 | m = MATCH_ERROR; | |
865 | ||
f6288c24 FR |
866 | /* Set up expr as an array constructor. */ |
867 | if (!scalar) | |
868 | { | |
869 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
870 | expr->ts = *ts; | |
871 | expr->value.constructor = array_head; | |
872 | ||
873 | expr->rank = as->rank; | |
874 | expr->shape = gfc_get_shape (expr->rank); | |
875 | ||
9b24c104 FR |
876 | /* Validate sizes. We built expr ourselves, so cons_size will be |
877 | constant (we fail above for non-constant expressions). | |
e11449d1 | 878 | We still need to verify that the sizes match. */ |
9b24c104 | 879 | gcc_assert (gfc_array_size (expr, &cons_size)); |
e11449d1 FR |
880 | cmp = mpz_cmp (cons_size, as_size); |
881 | if (cmp < 0) | |
882 | gfc_error ("Not enough elements in array initializer at %C"); | |
883 | else if (cmp > 0) | |
884 | gfc_error ("Too many elements in array initializer at %C"); | |
9b24c104 | 885 | mpz_clear (cons_size); |
f6288c24 | 886 | if (cmp) |
9b24c104 | 887 | goto cleanup; |
f6288c24 FR |
888 | } |
889 | ||
890 | /* Make sure scalar types match. */ | |
891 | else if (!gfc_compare_types (&expr->ts, ts) | |
892 | && !gfc_convert_type (expr, ts, 1)) | |
893 | goto cleanup; | |
894 | ||
895 | if (expr->ts.u.cl) | |
896 | expr->ts.u.cl->length_from_typespec = 1; | |
897 | ||
898 | *result = expr; | |
e11449d1 FR |
899 | m = MATCH_YES; |
900 | goto done; | |
f6288c24 FR |
901 | |
902 | syntax: | |
e11449d1 | 903 | m = MATCH_ERROR; |
f6288c24 FR |
904 | gfc_error ("Syntax error in old style initializer list at %C"); |
905 | ||
906 | cleanup: | |
907 | if (expr) | |
908 | expr->value.constructor = NULL; | |
909 | gfc_free_expr (expr); | |
910 | gfc_constructor_free (array_head); | |
e11449d1 FR |
911 | |
912 | done: | |
f6288c24 | 913 | mpz_clear (repeat); |
e11449d1 FR |
914 | if (!scalar) |
915 | mpz_clear (as_size); | |
916 | return m; | |
f6288c24 FR |
917 | } |
918 | ||
919 | ||
eea58adb | 920 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 921 | |
524af0d6 | 922 | static bool |
d3a9eea2 TB |
923 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
924 | { | |
93d1ab50 | 925 | int i, j; |
d3a9eea2 | 926 | |
63fbf586 TB |
927 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
928 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
929 | { | |
930 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 931 | return false; |
63fbf586 | 932 | } |
c62c6622 | 933 | |
d3a9eea2 TB |
934 | if (to->rank == 0 && from->rank > 0) |
935 | { | |
936 | to->rank = from->rank; | |
937 | to->type = from->type; | |
938 | to->cray_pointee = from->cray_pointee; | |
939 | to->cp_was_assumed = from->cp_was_assumed; | |
940 | ||
941 | for (i = 0; i < to->corank; i++) | |
942 | { | |
93d1ab50 SK |
943 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
944 | cleans up elsewhere. */ | |
945 | j = from->rank + i; | |
946 | if (j >= GFC_MAX_DIMENSIONS) | |
947 | break; | |
948 | ||
949 | to->lower[j] = to->lower[i]; | |
950 | to->upper[j] = to->upper[i]; | |
d3a9eea2 TB |
951 | } |
952 | for (i = 0; i < from->rank; i++) | |
953 | { | |
954 | if (copy) | |
955 | { | |
956 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
957 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
958 | } | |
959 | else | |
960 | { | |
961 | to->lower[i] = from->lower[i]; | |
962 | to->upper[i] = from->upper[i]; | |
963 | } | |
964 | } | |
965 | } | |
966 | else if (to->corank == 0 && from->corank > 0) | |
967 | { | |
968 | to->corank = from->corank; | |
969 | to->cotype = from->cotype; | |
970 | ||
971 | for (i = 0; i < from->corank; i++) | |
972 | { | |
93d1ab50 SK |
973 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
974 | cleans up elsewhere. */ | |
975 | j = to->rank + i; | |
976 | if (j >= GFC_MAX_DIMENSIONS) | |
977 | break; | |
978 | ||
d3a9eea2 TB |
979 | if (copy) |
980 | { | |
93d1ab50 SK |
981 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
982 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
d3a9eea2 TB |
983 | } |
984 | else | |
985 | { | |
93d1ab50 SK |
986 | to->lower[j] = from->lower[i]; |
987 | to->upper[j] = from->upper[i]; | |
d3a9eea2 TB |
988 | } |
989 | } | |
990 | } | |
63fbf586 | 991 | |
299ab1b2 | 992 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
93d1ab50 SK |
993 | { |
994 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
995 | "allowed dimensions of %d", | |
996 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
997 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
998 | return false; | |
999 | } | |
524af0d6 | 1000 | return true; |
d3a9eea2 TB |
1001 | } |
1002 | ||
1003 | ||
6de9cd9a DN |
1004 | /* Match an intent specification. Since this can only happen after an |
1005 | INTENT word, a legal intent-spec must follow. */ | |
1006 | ||
1007 | static sym_intent | |
1008 | match_intent_spec (void) | |
1009 | { | |
1010 | ||
1011 | if (gfc_match (" ( in out )") == MATCH_YES) | |
1012 | return INTENT_INOUT; | |
1013 | if (gfc_match (" ( in )") == MATCH_YES) | |
1014 | return INTENT_IN; | |
1015 | if (gfc_match (" ( out )") == MATCH_YES) | |
1016 | return INTENT_OUT; | |
1017 | ||
1018 | gfc_error ("Bad INTENT specification at %C"); | |
1019 | return INTENT_UNKNOWN; | |
1020 | } | |
1021 | ||
1022 | ||
1023 | /* Matches a character length specification, which is either a | |
e69afb29 | 1024 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
1025 | |
1026 | static match | |
e69afb29 | 1027 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 1028 | { |
cba28dad JD |
1029 | match m; |
1030 | ||
e69afb29 SK |
1031 | *expr = NULL; |
1032 | *deferred = false; | |
1033 | ||
6de9cd9a | 1034 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
1035 | return MATCH_YES; |
1036 | ||
1037 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 1038 | { |
98a819ea | 1039 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
1040 | return MATCH_ERROR; |
1041 | ||
1042 | *deferred = true; | |
1043 | ||
6de9cd9a DN |
1044 | return MATCH_YES; |
1045 | } | |
1046 | ||
cba28dad | 1047 | m = gfc_match_expr (expr); |
f37e928c | 1048 | |
98a819ea SK |
1049 | if (m == MATCH_NO || m == MATCH_ERROR) |
1050 | return m; | |
1051 | ||
1052 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
1053 | return MATCH_ERROR; |
1054 | ||
98a819ea | 1055 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 1056 | { |
8d48826b SK |
1057 | if ((*expr)->ts.type == BT_INTEGER |
1058 | || ((*expr)->ts.type == BT_UNKNOWN | |
1059 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
1060 | return MATCH_YES; | |
1061 | ||
1062 | goto syntax; | |
1063 | } | |
1064 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
1065 | { | |
1066 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
1067 | processor dependent and its value is greater than or equal to zero. | |
1068 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
1069 | to a negative value, the length of character entities declared | |
1070 | is zero. */ | |
1071 | ||
1072 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 1073 | { |
8d48826b SK |
1074 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
1075 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 1076 | } |
8d48826b SK |
1077 | else |
1078 | goto syntax; | |
cba28dad | 1079 | } |
8d48826b SK |
1080 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1081 | goto syntax; | |
1082 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1083 | { | |
fb42421e | 1084 | bool t; |
8d48826b SK |
1085 | gfc_expr *e; |
1086 | ||
1087 | e = gfc_copy_expr (*expr); | |
1088 | ||
1089 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1090 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
1091 | if (e->ref && e->ref->type == REF_ARRAY |
1092 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
1093 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1094 | goto syntax; | |
1095 | ||
fb42421e SK |
1096 | t = gfc_reduce_init_expr (e); |
1097 | ||
8d987deb SK |
1098 | if (!t && e->ts.type == BT_UNKNOWN |
1099 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
1100 | && (flag_implicit_none |
1101 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 1102 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
1103 | { |
1104 | gfc_free_expr (e); | |
1105 | goto syntax; | |
1106 | } | |
98a819ea | 1107 | |
54b96a2d | 1108 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 1109 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
1110 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1111 | { | |
1112 | gfc_free_expr (e); | |
1113 | goto syntax; | |
1114 | } | |
1115 | ||
1116 | gfc_free_expr (e); | |
1117 | } | |
98a819ea | 1118 | |
cba28dad JD |
1119 | return m; |
1120 | ||
1121 | syntax: | |
8d48826b | 1122 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 1123 | return MATCH_ERROR; |
6de9cd9a DN |
1124 | } |
1125 | ||
1126 | ||
1127 | /* A character length is a '*' followed by a literal integer or a | |
1128 | char_len_param_value in parenthesis. */ | |
1129 | ||
1130 | static match | |
62732c30 | 1131 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 1132 | { |
5cf54585 | 1133 | int length; |
6de9cd9a DN |
1134 | match m; |
1135 | ||
f5acf0f2 | 1136 | *deferred = false; |
6de9cd9a DN |
1137 | m = gfc_match_char ('*'); |
1138 | if (m != MATCH_YES) | |
1139 | return m; | |
1140 | ||
5cf54585 | 1141 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1142 | if (m == MATCH_ERROR) |
1143 | return m; | |
1144 | ||
1145 | if (m == MATCH_YES) | |
1146 | { | |
62732c30 | 1147 | if (obsolescent_check |
524af0d6 | 1148 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1149 | return MATCH_ERROR; |
f622221a | 1150 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1151 | return m; |
1152 | } | |
1153 | ||
1154 | if (gfc_match_char ('(') == MATCH_NO) | |
1155 | goto syntax; | |
1156 | ||
e69afb29 | 1157 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1158 | if (m != MATCH_YES && gfc_matching_function) |
1159 | { | |
1160 | gfc_undo_symbols (); | |
1161 | m = MATCH_YES; | |
1162 | } | |
1163 | ||
6de9cd9a DN |
1164 | if (m == MATCH_ERROR) |
1165 | return m; | |
1166 | if (m == MATCH_NO) | |
1167 | goto syntax; | |
1168 | ||
1169 | if (gfc_match_char (')') == MATCH_NO) | |
1170 | { | |
1171 | gfc_free_expr (*expr); | |
1172 | *expr = NULL; | |
1173 | goto syntax; | |
1174 | } | |
1175 | ||
1176 | return MATCH_YES; | |
1177 | ||
1178 | syntax: | |
1179 | gfc_error ("Syntax error in character length specification at %C"); | |
1180 | return MATCH_ERROR; | |
1181 | } | |
1182 | ||
1183 | ||
9e35b386 EE |
1184 | /* Special subroutine for finding a symbol. Check if the name is found |
1185 | in the current name space. If not, and we're compiling a function or | |
1186 | subroutine and the parent compilation unit is an interface, then check | |
1187 | to see if the name we've been given is the name of the interface | |
1188 | (located in another namespace). */ | |
6de9cd9a DN |
1189 | |
1190 | static int | |
08a6b8e0 | 1191 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1192 | { |
1193 | gfc_state_data *s; | |
08a6b8e0 | 1194 | gfc_symtree *st; |
9e35b386 | 1195 | int i; |
6de9cd9a | 1196 | |
08a6b8e0 | 1197 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1198 | if (i == 0) |
08a6b8e0 TB |
1199 | { |
1200 | *result = st ? st->n.sym : NULL; | |
1201 | goto end; | |
1202 | } | |
d51347f9 | 1203 | |
6de9cd9a DN |
1204 | if (gfc_current_state () != COMP_SUBROUTINE |
1205 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1206 | goto end; |
6de9cd9a DN |
1207 | |
1208 | s = gfc_state_stack->previous; | |
1209 | if (s == NULL) | |
9e35b386 | 1210 | goto end; |
6de9cd9a DN |
1211 | |
1212 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1213 | goto end; |
6de9cd9a | 1214 | if (s->sym == NULL) |
66e4ab31 | 1215 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1216 | |
1217 | if (strcmp (name, s->sym->name) == 0) | |
1218 | { | |
1219 | *result = s->sym; | |
1220 | return 0; | |
1221 | } | |
1222 | ||
9e35b386 EE |
1223 | end: |
1224 | return i; | |
6de9cd9a DN |
1225 | } |
1226 | ||
1227 | ||
1228 | /* Special subroutine for getting a symbol node associated with a | |
1229 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1230 | symbol is created in the parent using with symtree node in the | |
1231 | child unit pointing to the symbol. If the current namespace has no | |
1232 | parent, then the symbol is just created in the current unit. */ | |
1233 | ||
1234 | static int | |
636dff67 | 1235 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1236 | { |
1237 | gfc_symtree *st; | |
1238 | gfc_symbol *sym; | |
a7ca4d8d | 1239 | int rc = 0; |
6de9cd9a | 1240 | |
1a492601 PT |
1241 | /* Module functions have to be left in their own namespace because |
1242 | they have potentially (almost certainly!) already been referenced. | |
1243 | In this sense, they are rather like external functions. This is | |
1244 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1245 | space is set to point to the master function, so that the fake | |
1246 | result mechanism can work. */ | |
1247 | if (module_fcn_entry) | |
6c12686b PT |
1248 | { |
1249 | /* Present if entry is declared to be a module procedure. */ | |
1250 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1251 | |
6c12686b PT |
1252 | if (*result == NULL) |
1253 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1254 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1255 | && (*result)->ts.type == BT_UNKNOWN |
1256 | && sym->attr.flavor == FL_UNKNOWN) | |
1257 | /* Pick up the typespec for the entry, if declared in the function | |
1258 | body. Note that this symbol is FL_UNKNOWN because it will | |
1259 | only have appeared in a type declaration. The local symtree | |
1260 | is set to point to the module symbol and a unique symtree | |
1261 | to the local version. This latter ensures a correct clearing | |
1262 | of the symbols. */ | |
2e32a71e PT |
1263 | { |
1264 | /* If the ENTRY proceeds its specification, we need to ensure | |
1265 | that this does not raise a "has no IMPLICIT type" error. */ | |
1266 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1267 | sym->attr.untyped = 1; |
2e32a71e | 1268 | |
0e5a218b | 1269 | (*result)->ts = sym->ts; |
2e32a71e PT |
1270 | |
1271 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1272 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1273 | can be applied. */ |
1274 | (*result)->ns = gfc_current_ns; | |
1275 | ||
1276 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1277 | st->n.sym = *result; | |
1278 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1279 | sym->refs++; |
2e32a71e PT |
1280 | st->n.sym = sym; |
1281 | } | |
6c12686b | 1282 | } |
68ea355b PT |
1283 | else |
1284 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1285 | |
a7ca4d8d PT |
1286 | if (rc) |
1287 | return rc; | |
1288 | ||
68ea355b | 1289 | sym = *result; |
79124116 PT |
1290 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1291 | return rc; | |
6de9cd9a | 1292 | |
96c8b253 | 1293 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4668d6f9 PT |
1294 | { |
1295 | /* Create a partially populated interface symbol to carry the | |
1296 | characteristics of the procedure and the result. */ | |
c064374d | 1297 | sym->tlink = gfc_new_symbol (name, sym->ns); |
96c8b253 | 1298 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
c064374d | 1299 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1300 | if (sym->attr.dimension) |
c064374d | 1301 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1302 | |
1303 | /* Ideally, at this point, a copy would be made of the formal | |
1304 | arguments and their namespace. However, this does not appear | |
1305 | to be necessary, albeit at the expense of not being able to | |
1306 | use gfc_compare_interfaces directly. */ | |
1307 | ||
1308 | if (sym->result && sym->result != sym) | |
1309 | { | |
c064374d | 1310 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1311 | sym->result = NULL; |
1312 | } | |
1313 | else if (sym->result) | |
1314 | { | |
c064374d | 1315 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1316 | } |
1317 | } | |
1318 | else if (sym && !sym->gfc_new | |
1319 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1320 | { |
cda7004b PT |
1321 | /* Trap another encompassed procedure with the same name. All |
1322 | these conditions are necessary to avoid picking up an entry | |
1323 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1324 | this is handled using gsymbols to register unique, globally |
cda7004b | 1325 | accessible names. */ |
68ea355b | 1326 | if (sym->attr.flavor != 0 |
636dff67 | 1327 | && sym->attr.proc != 0 |
64300da7 | 1328 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
636dff67 | 1329 | && sym->attr.if_source != IFSRC_UNKNOWN) |
b4439561 TB |
1330 | { |
1331 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1332 | name, &sym->declared_at); | |
1333 | return true; | |
1334 | } | |
64300da7 SK |
1335 | if (sym->attr.flavor != 0 |
1336 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
b4439561 TB |
1337 | { |
1338 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1339 | name, &sym->declared_at); | |
1340 | return true; | |
1341 | } | |
64300da7 | 1342 | |
81ea7c11 SK |
1343 | if (sym->attr.external && sym->attr.procedure |
1344 | && gfc_current_state () == COMP_CONTAINS) | |
b4439561 TB |
1345 | { |
1346 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1347 | "procedure defined at %L", | |
1348 | name, &sym->declared_at); | |
1349 | return true; | |
1350 | } | |
81ea7c11 | 1351 | |
fd3e70af JD |
1352 | /* Trap a procedure with a name the same as interface in the |
1353 | encompassing scope. */ | |
1354 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1355 | && (sym->attr.subroutine || sym->attr.function) |
1356 | && !sym->attr.mod_proc) | |
b4439561 TB |
1357 | { |
1358 | gfc_error_now ("Name %qs at %C is already defined" | |
1359 | " as a generic interface at %L", | |
1360 | name, &sym->declared_at); | |
1361 | return true; | |
1362 | } | |
fd3e70af | 1363 | |
68ea355b PT |
1364 | /* Trap declarations of attributes in encompassing scope. The |
1365 | signature for this is that ts.kind is set. Legitimate | |
1366 | references only set ts.type. */ | |
1367 | if (sym->ts.kind != 0 | |
636dff67 SK |
1368 | && !sym->attr.implicit_type |
1369 | && sym->attr.proc == 0 | |
1370 | && gfc_current_ns->parent != NULL | |
1371 | && sym->attr.access == 0 | |
1372 | && !module_fcn_entry) | |
b4439561 TB |
1373 | { |
1374 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
96c8b253 | 1375 | "from a previous declaration", name); |
b4439561 TB |
1376 | return true; |
1377 | } | |
96c8b253 SK |
1378 | } |
1379 | ||
b74fa126 SK |
1380 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1381 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1382 | body that is declared in the scoping unit of a module or submodule. */ | |
1383 | if (sym->attr.external | |
1384 | && (sym->attr.subroutine || sym->attr.function) | |
1385 | && sym->attr.if_source == IFSRC_IFBODY | |
1386 | && !current_attr.module_procedure | |
1387 | && sym->attr.proc == PROC_MODULE | |
1388 | && gfc_state_stack->state == COMP_CONTAINS) | |
b4439561 TB |
1389 | { |
1390 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1391 | "clashes with internal procedure defined at %C", | |
1392 | name, &sym->declared_at); | |
1393 | return true; | |
1394 | } | |
b74fa126 SK |
1395 | |
1396 | if (sym && !sym->gfc_new | |
1397 | && sym->attr.flavor != FL_UNKNOWN | |
1398 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1399 | && gfc_state_stack->state == COMP_CONTAINS | |
1400 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
b4439561 TB |
1401 | { |
1402 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1403 | name, &sym->declared_at); | |
1404 | return true; | |
1405 | } | |
68ea355b PT |
1406 | |
1407 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1408 | return rc; | |
6de9cd9a | 1409 | |
1a492601 PT |
1410 | /* Module function entries will already have a symtree in |
1411 | the current namespace but will need one at module level. */ | |
1412 | if (module_fcn_entry) | |
6c12686b PT |
1413 | { |
1414 | /* Present if entry is declared to be a module procedure. */ | |
1415 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1416 | if (st == NULL) | |
1417 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1418 | } | |
1a492601 PT |
1419 | else |
1420 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1421 | |
6de9cd9a DN |
1422 | st->n.sym = sym; |
1423 | sym->refs++; | |
1424 | ||
66e4ab31 | 1425 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1426 | |
1a492601 | 1427 | if (((sym->ns->proc_name != NULL |
96c8b253 SK |
1428 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1429 | && sym->attr.proc != PROC_MODULE) | |
1430 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1431 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
6de9cd9a DN |
1432 | rc = 2; |
1433 | ||
1434 | return rc; | |
1435 | } | |
1436 | ||
1437 | ||
a8b3b0b6 CR |
1438 | /* Verify that the given symbol representing a parameter is C |
1439 | interoperable, by checking to see if it was marked as such after | |
1440 | its declaration. If the given symbol is not interoperable, a | |
1441 | warning is reported, thus removing the need to return the status to | |
1442 | the calling function. The standard does not require the user use | |
1443 | one of the iso_c_binding named constants to declare an | |
1444 | interoperable parameter, but we can't be sure if the param is C | |
1445 | interop or not if the user doesn't. For example, integer(4) may be | |
1446 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1447 | a number of the C types, which causes a problem because the | |
1448 | compiler can't know which one. This code is almost certainly not | |
1449 | portable, and the user will get what they deserve if the C type | |
1450 | across platforms isn't always interoperable with integer(4). If | |
1451 | the user had used something like integer(c_int) or integer(c_long), | |
1452 | the compiler could have automatically handled the varying sizes | |
1453 | across platforms. */ | |
1454 | ||
524af0d6 | 1455 | bool |
00820a2a | 1456 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1457 | { |
1458 | int is_c_interop = 0; | |
524af0d6 | 1459 | bool retval = true; |
a8b3b0b6 CR |
1460 | |
1461 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1462 | Don't repeat the checks here. */ | |
1463 | if (sym->attr.implicit_type) | |
524af0d6 | 1464 | return true; |
f5acf0f2 | 1465 | |
a8b3b0b6 CR |
1466 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1467 | they're interoperable if they're BIND(C) and their params are all | |
1468 | interoperable. */ | |
1469 | if (sym->attr.flavor == FL_PROCEDURE) | |
1470 | { | |
1471 | if (sym->attr.is_bind_c == 0) | |
1472 | { | |
4daa149b TB |
1473 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1474 | "attribute to be C interoperable", sym->name, | |
1475 | &(sym->declared_at)); | |
524af0d6 | 1476 | return false; |
a8b3b0b6 CR |
1477 | } |
1478 | else | |
1479 | { | |
1480 | if (sym->attr.is_c_interop == 1) | |
1481 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1482 | return true; |
a8b3b0b6 CR |
1483 | else |
1484 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1485 | sym->common_block); | |
1486 | } | |
1487 | } | |
f5acf0f2 | 1488 | |
a8b3b0b6 CR |
1489 | /* See if we've stored a reference to a procedure that owns sym. */ |
1490 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1491 | { | |
1492 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1493 | { | |
524af0d6 | 1494 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1495 | |
1496 | if (is_c_interop != 1) | |
1497 | { | |
1498 | /* Make personalized messages to give better feedback. */ | |
1499 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1500 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1501 | "BIND(C) procedure %qs but is not C interoperable " | |
1502 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1503 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1504 | sym->ns->proc_name->name, |
bc21d315 | 1505 | sym->ts.u.derived->name); |
00820a2a | 1506 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1507 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1508 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1509 | "because it is polymorphic", |
1510 | sym->name, &(sym->declared_at), | |
1511 | sym->ns->proc_name->name); | |
4daa149b | 1512 | else if (warn_c_binding_type) |
48749dbc MLI |
1513 | gfc_warning (OPT_Wc_binding_type, |
1514 | "Variable %qs at %L is a dummy argument of the " | |
1515 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1516 | "interoperable", |
1517 | sym->name, &(sym->declared_at), | |
1518 | sym->ns->proc_name->name); | |
1519 | } | |
aa5e22f0 CR |
1520 | |
1521 | /* Character strings are only C interoperable if they have a | |
1522 | length of 1. */ | |
0a524296 | 1523 | if (sym->ts.type == BT_CHARACTER && !sym->attr.dimension) |
aa5e22f0 | 1524 | { |
bc21d315 | 1525 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1526 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1527 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1528 | { | |
0a524296 PT |
1529 | gfc_error ("Character argument %qs at %L " |
1530 | "must be length 1 because " | |
1531 | "procedure %qs is BIND(C)", | |
1532 | sym->name, &sym->declared_at, | |
1533 | sym->ns->proc_name->name); | |
1534 | retval = false; | |
aa5e22f0 CR |
1535 | } |
1536 | } | |
1537 | ||
a8b3b0b6 CR |
1538 | /* We have to make sure that any param to a bind(c) routine does |
1539 | not have the allocatable, pointer, or optional attributes, | |
1540 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1541 | if (sym->attr.allocatable == 1 |
286f737c | 1542 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1543 | "ALLOCATABLE attribute in procedure %qs " |
60f6ca95 TB |
1544 | "with BIND(C)", sym->name, |
1545 | &(sym->declared_at), | |
1546 | sym->ns->proc_name->name)) | |
1547 | retval = false; | |
1548 | ||
1549 | if (sym->attr.pointer == 1 | |
286f737c | 1550 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1551 | "POINTER attribute in procedure %qs " |
60f6ca95 TB |
1552 | "with BIND(C)", sym->name, |
1553 | &(sym->declared_at), | |
1554 | sym->ns->proc_name->name)) | |
1555 | retval = false; | |
1556 | ||
1557 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1558 | { |
c4100eae MLI |
1559 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1560 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1561 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1562 | sym->ns->proc_name->name); |
524af0d6 | 1563 | retval = false; |
a8b3b0b6 CR |
1564 | } |
1565 | ||
2e8d9212 | 1566 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1567 | { |
c4100eae MLI |
1568 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1569 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1570 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1571 | sym->ns->proc_name->name); |
524af0d6 | 1572 | retval = false; |
a8b3b0b6 | 1573 | } |
2e8d9212 | 1574 | else if (sym->attr.optional == 1 |
286f737c | 1575 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
524af0d6 | 1576 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1577 | "procedure %qs which is BIND(C)", |
1578 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1579 | sym->ns->proc_name->name)) |
1580 | retval = false; | |
a8b3b0b6 CR |
1581 | |
1582 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1583 | either assumed size or explicit shape. Deferred shape is already |
1584 | covered by the pointer/allocatable attribute. */ | |
1585 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
286f737c | 1586 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
524af0d6 | 1587 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1588 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1589 | &(sym->declared_at), |
1590 | sym->ns->proc_name->name, | |
524af0d6 JB |
1591 | &(sym->ns->proc_name->declared_at))) |
1592 | retval = false; | |
a8b3b0b6 CR |
1593 | } |
1594 | } | |
1595 | ||
1596 | return retval; | |
1597 | } | |
1598 | ||
1599 | ||
cf2b3c22 | 1600 | |
a8b3b0b6 | 1601 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1602 | |
524af0d6 | 1603 | static bool |
e69afb29 | 1604 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1605 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1606 | { |
1607 | symbol_attribute attr; | |
1608 | gfc_symbol *sym; | |
1e6025b6 | 1609 | int upper; |
bedee914 PT |
1610 | gfc_symtree *st; |
1611 | ||
1612 | /* Symbols in a submodule are host associated from the parent module or | |
1613 | submodules. Therefore, they can be overridden by declarations in the | |
1614 | submodule scope. Deal with this by attaching the existing symbol to | |
1615 | a new symtree and recycling the old symtree with a new symbol... */ | |
1616 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1617 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1618 | && st->n.sym != NULL | |
1619 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1620 | { | |
1621 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1622 | s->n.sym = st->n.sym; | |
1623 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1624 | |
bedee914 PT |
1625 | |
1626 | st->n.sym = sym; | |
1627 | sym->refs++; | |
1628 | gfc_set_sym_referenced (sym); | |
1629 | } | |
1630 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1631 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1632 | return false; |
6de9cd9a | 1633 | |
1e6025b6 TK |
1634 | /* Check if the name has already been defined as a type. The |
1635 | first letter of the symtree will be in upper case then. Of | |
1636 | course, this is only necessary if the upper case letter is | |
1637 | actually different. */ | |
1638 | ||
1639 | upper = TOUPPER(name[0]); | |
1640 | if (upper != name[0]) | |
1641 | { | |
1642 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1643 | gfc_symtree *st; | |
1e6025b6 | 1644 | |
025d57f0 MS |
1645 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1646 | strcpy (u_name, name); | |
1e6025b6 TK |
1647 | u_name[0] = upper; |
1648 | ||
1649 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1650 | ||
f6288c24 FR |
1651 | /* STRUCTURE types can alias symbol names */ |
1652 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1653 | { |
1654 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1655 | &st->n.sym->declared_at); | |
1656 | return false; | |
1657 | } | |
1658 | } | |
1659 | ||
66e4ab31 | 1660 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1661 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1662 | && (sym->attr.implicit_type == 0 |
1663 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1664 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1665 | return false; | |
6de9cd9a DN |
1666 | |
1667 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1668 | { |
1669 | sym->ts.u.cl = cl; | |
1670 | sym->ts.deferred = cl_deferred; | |
1671 | } | |
6de9cd9a DN |
1672 | |
1673 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1674 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1675 | return false; | |
6de9cd9a DN |
1676 | *as = NULL; |
1677 | ||
1678 | /* Add attribute to symbol. The copy is so that we can reset the | |
1679 | dimension attribute. */ | |
1680 | attr = current_attr; | |
1681 | attr.dimension = 0; | |
be59db2d | 1682 | attr.codimension = 0; |
6de9cd9a | 1683 | |
524af0d6 JB |
1684 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1685 | return false; | |
6de9cd9a | 1686 | |
a8b3b0b6 CR |
1687 | /* Finish any work that may need to be done for the binding label, |
1688 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1689 | is made, and before the symbol name (for data decls), so the | |
1690 | current_ts is holding the binding label, or nothing if the | |
1691 | name= attr wasn't given. Therefore, test here if we're dealing | |
1692 | with a bind(c) and make sure the binding label is set correctly. */ | |
1693 | if (sym->attr.is_bind_c == 1) | |
1694 | { | |
62603fae | 1695 | if (!sym->binding_label) |
a8b3b0b6 | 1696 | { |
ad4a2f64 TB |
1697 | /* Set the binding label and verify that if a NAME= was specified |
1698 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1699 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1700 | num_idents_on_line)) |
1701 | return false; | |
a8b3b0b6 CR |
1702 | } |
1703 | } | |
1704 | ||
1705 | /* See if we know we're in a common block, and if it's a bind(c) | |
1706 | common then we need to make sure we're an interoperable type. */ | |
1707 | if (sym->attr.in_common == 1) | |
1708 | { | |
1709 | /* Test the common block object. */ | |
1710 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1711 | && sym->ts.is_c_interop != 1) | |
1712 | { | |
4daa149b | 1713 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1714 | "must be declared with a C interoperable " |
4daa149b | 1715 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1716 | sym->name, sym->common_block->name, |
1717 | sym->common_block->name); | |
1718 | gfc_clear_error (); | |
1719 | } | |
1720 | } | |
1721 | ||
9a3db5a3 PT |
1722 | sym->attr.implied_index = 0; |
1723 | ||
5bab4c96 PT |
1724 | /* Use the parameter expressions for a parameterized derived type. */ |
1725 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1726 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1727 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1728 | ||
528622fd | 1729 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1730 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1731 | |
524af0d6 | 1732 | return true; |
6de9cd9a DN |
1733 | } |
1734 | ||
636dff67 | 1735 | |
df7cc9b5 | 1736 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1737 | truncated. If we're inside an array constructor without a typespec, we |
1738 | additionally check that all elements have the same length; check_len -1 | |
1739 | means no checking. */ | |
df7cc9b5 FW |
1740 | |
1741 | void | |
6b271a2e JB |
1742 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1743 | gfc_charlen_t check_len) | |
df7cc9b5 | 1744 | { |
00660189 | 1745 | gfc_char_t *s; |
6b271a2e | 1746 | gfc_charlen_t slen; |
df7cc9b5 | 1747 | |
834e9dbb SK |
1748 | if (expr->ts.type != BT_CHARACTER) |
1749 | return; | |
63af1586 | 1750 | |
b441ae1d SK |
1751 | if (expr->expr_type != EXPR_CONSTANT) |
1752 | { | |
1753 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1754 | return; | |
1755 | } | |
df7cc9b5 FW |
1756 | |
1757 | slen = expr->value.character.length; | |
1758 | if (len != slen) | |
1759 | { | |
00660189 FXC |
1760 | s = gfc_get_wide_string (len + 1); |
1761 | memcpy (s, expr->value.character.string, | |
1762 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1763 | if (len > slen) |
00660189 | 1764 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1765 | |
a96c39ea | 1766 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1767 | gfc_warning_now (OPT_Wcharacter_truncation, |
1768 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1769 | "(%ld/%ld)", &expr->where, |
1770 | (long) slen, (long) len); | |
2220652d PT |
1771 | |
1772 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1773 | initializers. */ | |
d2848082 DK |
1774 | if (check_len != -1 && slen != check_len |
1775 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1776 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1777 | "at %L must have the same length (%ld/%ld)", |
1778 | &expr->where, (long) slen, | |
1779 | (long) check_len); | |
2220652d | 1780 | |
150675a8 | 1781 | s[len] = '\0'; |
cede9502 | 1782 | free (expr->value.character.string); |
df7cc9b5 FW |
1783 | expr->value.character.string = s; |
1784 | expr->value.character.length = len; | |
e6ca33ba HA |
1785 | /* If explicit representation was given, clear it |
1786 | as it is no longer needed after padding. */ | |
1787 | if (expr->representation.length) | |
1788 | { | |
1789 | expr->representation.length = 0; | |
1790 | free (expr->representation.string); | |
1791 | expr->representation.string = NULL; | |
1792 | } | |
df7cc9b5 FW |
1793 | } |
1794 | } | |
6de9cd9a | 1795 | |
25d8f0a2 | 1796 | |
d51347f9 | 1797 | /* Function to create and update the enumerator history |
25d8f0a2 | 1798 | using the information passed as arguments. |
d51347f9 TB |
1799 | Pointer "max_enum" is also updated, to point to |
1800 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1801 | |
1802 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1803 | INIT points to its enumerator value. */ |
25d8f0a2 | 1804 | |
d51347f9 | 1805 | static void |
636dff67 | 1806 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1807 | { |
1808 | enumerator_history *new_enum_history; | |
1809 | gcc_assert (sym != NULL && init != NULL); | |
1810 | ||
ece3f663 | 1811 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1812 | |
1813 | new_enum_history->sym = sym; | |
1814 | new_enum_history->initializer = init; | |
1815 | new_enum_history->next = NULL; | |
1816 | ||
1817 | if (enum_history == NULL) | |
1818 | { | |
1819 | enum_history = new_enum_history; | |
1820 | max_enum = enum_history; | |
1821 | } | |
1822 | else | |
1823 | { | |
1824 | new_enum_history->next = enum_history; | |
1825 | enum_history = new_enum_history; | |
1826 | ||
d51347f9 | 1827 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1828 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1829 | max_enum = new_enum_history; |
25d8f0a2 TS |
1830 | } |
1831 | } | |
1832 | ||
1833 | ||
d51347f9 | 1834 | /* Function to free enum kind history. */ |
25d8f0a2 | 1835 | |
d51347f9 | 1836 | void |
636dff67 | 1837 | gfc_free_enum_history (void) |
25d8f0a2 | 1838 | { |
d51347f9 TB |
1839 | enumerator_history *current = enum_history; |
1840 | enumerator_history *next; | |
25d8f0a2 TS |
1841 | |
1842 | while (current != NULL) | |
1843 | { | |
1844 | next = current->next; | |
cede9502 | 1845 | free (current); |
25d8f0a2 TS |
1846 | current = next; |
1847 | } | |
1848 | max_enum = NULL; | |
1849 | enum_history = NULL; | |
1850 | } | |
1851 | ||
1852 | ||
6de9cd9a DN |
1853 | /* Function called by variable_decl() that adds an initialization |
1854 | expression to a symbol. */ | |
1855 | ||
524af0d6 | 1856 | static bool |
66e4ab31 | 1857 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1858 | { |
1859 | symbol_attribute attr; | |
1860 | gfc_symbol *sym; | |
1861 | gfc_expr *init; | |
1862 | ||
1863 | init = *initp; | |
08a6b8e0 | 1864 | if (find_special (name, &sym, false)) |
524af0d6 | 1865 | return false; |
6de9cd9a DN |
1866 | |
1867 | attr = sym->attr; | |
1868 | ||
1869 | /* If this symbol is confirming an implicit parameter type, | |
1870 | then an initialization expression is not allowed. */ | |
1871 | if (attr.flavor == FL_PARAMETER | |
1872 | && sym->value != NULL | |
1873 | && *initp != NULL) | |
1874 | { | |
c4100eae | 1875 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1876 | sym->name); |
524af0d6 | 1877 | return false; |
6de9cd9a DN |
1878 | } |
1879 | ||
1880 | if (init == NULL) | |
1881 | { | |
1882 | /* An initializer is required for PARAMETER declarations. */ | |
1883 | if (attr.flavor == FL_PARAMETER) | |
1884 | { | |
1885 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1886 | return false; |
6de9cd9a DN |
1887 | } |
1888 | } | |
1889 | else | |
1890 | { | |
1891 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1892 | initializer. */ |
6de9cd9a DN |
1893 | if (sym->attr.data) |
1894 | { | |
c4100eae | 1895 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1896 | "appears in a DATA statement", sym->name); |
524af0d6 | 1897 | return false; |
6de9cd9a DN |
1898 | } |
1899 | ||
75d17889 | 1900 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1901 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1902 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1903 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1904 | && !sym->attr.proc_pointer |
524af0d6 JB |
1905 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1906 | return false; | |
6de9cd9a | 1907 | |
bc21d315 | 1908 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1909 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1910 | { |
1911 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1912 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1913 | return false; | |
51b128a0 | 1914 | |
bc21d315 | 1915 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1916 | { |
f622221a | 1917 | gfc_charlen_t clen; |
66e4ab31 SK |
1918 | /* If there are multiple CHARACTER variables declared on the |
1919 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1920 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1921 | |
a99288e5 PT |
1922 | if (sym->attr.flavor == FL_PARAMETER) |
1923 | { | |
1924 | if (init->expr_type == EXPR_CONSTANT) | |
1925 | { | |
1926 | clen = init->value.character.length; | |
b7e75771 | 1927 | sym->ts.u.cl->length |
f622221a | 1928 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1929 | NULL, clen); |
a99288e5 PT |
1930 | } |
1931 | else if (init->expr_type == EXPR_ARRAY) | |
1932 | { | |
c004a341 | 1933 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1934 | { |
1935 | const gfc_expr *length = init->ts.u.cl->length; | |
1936 | if (length->expr_type != EXPR_CONSTANT) | |
1937 | { | |
1938 | gfc_error ("Cannot initialize parameter array " | |
1939 | "at %L " | |
1940 | "with variable length elements", | |
1941 | &sym->declared_at); | |
1942 | return false; | |
1943 | } | |
1944 | clen = mpz_get_si (length->value.integer); | |
1945 | } | |
dc0f176a SK |
1946 | else if (init->value.constructor) |
1947 | { | |
1948 | gfc_constructor *c; | |
70112e2a | 1949 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1950 | clen = c->expr->value.character.length; |
1951 | } | |
1952 | else | |
1953 | gcc_unreachable (); | |
b7e75771 | 1954 | sym->ts.u.cl->length |
f622221a | 1955 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1956 | NULL, clen); |
a99288e5 | 1957 | } |
bc21d315 JW |
1958 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1959 | sym->ts.u.cl->length = | |
bc1efcb7 | 1960 | gfc_copy_expr (init->ts.u.cl->length); |
a99288e5 | 1961 | } |
df7cc9b5 FW |
1962 | } |
1963 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1964 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1965 | { |
d30ecc9c SK |
1966 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1967 | return false; | |
1968 | ||
aeb8c028 JJ |
1969 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1970 | false); | |
1971 | /* resolve_charlen will complain later on if the length | |
1972 | is too large. Just skeep the initialization in that case. */ | |
1973 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1974 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1975 | { |
aeb8c028 JJ |
1976 | HOST_WIDE_INT len |
1977 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1978 | ||
1979 | if (init->expr_type == EXPR_CONSTANT) | |
1980 | gfc_set_constant_character_len (len, init, -1); | |
1981 | else if (init->expr_type == EXPR_ARRAY) | |
1982 | { | |
1983 | gfc_constructor *c; | |
b7e75771 | 1984 | |
aeb8c028 JJ |
1985 | /* Build a new charlen to prevent simplification from |
1986 | deleting the length before it is resolved. */ | |
1987 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1988 | init->ts.u.cl->length | |
1989 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 1990 | |
aeb8c028 JJ |
1991 | for (c = gfc_constructor_first (init->value.constructor); |
1992 | c; c = gfc_constructor_next (c)) | |
1993 | gfc_set_constant_character_len (len, c->expr, -1); | |
1994 | } | |
df7cc9b5 FW |
1995 | } |
1996 | } | |
1997 | } | |
1998 | ||
f5ca06e6 DK |
1999 | /* If sym is implied-shape, set its upper bounds from init. */ |
2000 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
2001 | && sym->as->type == AS_IMPLIED_SHAPE) | |
2002 | { | |
2003 | int dim; | |
2004 | ||
2005 | if (init->rank == 0) | |
2006 | { | |
1fe61adf | 2007 | gfc_error ("Cannot initialize implied-shape array at %L" |
f5ca06e6 | 2008 | " with scalar", &sym->declared_at); |
524af0d6 | 2009 | return false; |
f5ca06e6 | 2010 | } |
f5ca06e6 | 2011 | |
8ed5ae52 TK |
2012 | /* The shape may be NULL for EXPR_ARRAY, set it. */ |
2013 | if (init->shape == NULL) | |
2014 | { | |
2015 | gcc_assert (init->expr_type == EXPR_ARRAY); | |
2016 | init->shape = gfc_get_shape (1); | |
2017 | if (!gfc_array_size (init, &init->shape[0])) | |
2018 | gfc_internal_error ("gfc_array_size failed"); | |
2019 | } | |
f5ca06e6 DK |
2020 | |
2021 | for (dim = 0; dim < sym->as->rank; ++dim) | |
2022 | { | |
2023 | int k; | |
cdffe788 | 2024 | gfc_expr *e, *lower; |
f5acf0f2 | 2025 | |
f5ca06e6 | 2026 | lower = sym->as->lower[dim]; |
cdffe788 | 2027 | |
70112e2a | 2028 | /* If the lower bound is an array element from another |
cdffe788 SK |
2029 | parameterized array, then it is marked with EXPR_VARIABLE and |
2030 | is an initialization expression. Try to reduce it. */ | |
2031 | if (lower->expr_type == EXPR_VARIABLE) | |
2032 | gfc_reduce_init_expr (lower); | |
2033 | ||
2034 | if (lower->expr_type == EXPR_CONSTANT) | |
2035 | { | |
2036 | /* All dimensions must be without upper bound. */ | |
2037 | gcc_assert (!sym->as->upper[dim]); | |
2038 | ||
2039 | k = lower->ts.kind; | |
2040 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
2041 | mpz_add (e->value.integer, lower->value.integer, | |
2042 | init->shape[dim]); | |
2043 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
2044 | sym->as->upper[dim] = e; | |
2045 | } | |
2046 | else | |
f5ca06e6 DK |
2047 | { |
2048 | gfc_error ("Non-constant lower bound in implied-shape" | |
2049 | " declaration at %L", &lower->where); | |
524af0d6 | 2050 | return false; |
f5ca06e6 | 2051 | } |
f5ca06e6 DK |
2052 | } |
2053 | ||
2054 | sym->as->type = AS_EXPLICIT; | |
2055 | } | |
2056 | ||
a8b3b0b6 CR |
2057 | /* Need to check if the expression we initialized this |
2058 | to was one of the iso_c_binding named constants. If so, | |
2059 | and we're a parameter (constant), let it be iso_c. | |
2060 | For example: | |
2061 | integer(c_int), parameter :: my_int = c_int | |
2062 | integer(my_int) :: my_int_2 | |
2063 | If we mark my_int as iso_c (since we can see it's value | |
2064 | is equal to one of the named constants), then my_int_2 | |
2065 | will be considered C interoperable. */ | |
f6288c24 | 2066 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
2067 | { |
2068 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2069 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2070 | /* attr bits needed for module files. */ | |
2071 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2072 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2073 | if (init->ts.is_iso_c) | |
2074 | sym->ts.f90_type = init->ts.f90_type; | |
2075 | } | |
b7e75771 | 2076 | |
6de9cd9a DN |
2077 | /* Add initializer. Make sure we keep the ranks sane. */ |
2078 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
2079 | { |
2080 | mpz_t size; | |
2081 | gfc_expr *array; | |
a9b43781 PT |
2082 | int n; |
2083 | if (sym->attr.flavor == FL_PARAMETER | |
2084 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 2085 | && spec_size (sym->as, &size) |
a9b43781 PT |
2086 | && mpz_cmp_si (size, 0) > 0) |
2087 | { | |
b7e75771 JD |
2088 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2089 | &init->where); | |
a9b43781 | 2090 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
2091 | gfc_constructor_append_expr (&array->value.constructor, |
2092 | n == 0 | |
2093 | ? init | |
2094 | : gfc_copy_expr (init), | |
2095 | &init->where); | |
f5acf0f2 | 2096 | |
a9b43781 PT |
2097 | array->shape = gfc_get_shape (sym->as->rank); |
2098 | for (n = 0; n < sym->as->rank; n++) | |
2099 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2100 | ||
2101 | init = array; | |
2102 | mpz_clear (size); | |
2103 | } | |
2104 | init->rank = sym->as->rank; | |
2105 | } | |
6de9cd9a DN |
2106 | |
2107 | sym->value = init; | |
ef7236d2 DF |
2108 | if (sym->attr.save == SAVE_NONE) |
2109 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2110 | *initp = NULL; |
2111 | } | |
2112 | ||
524af0d6 | 2113 | return true; |
6de9cd9a DN |
2114 | } |
2115 | ||
2116 | ||
2117 | /* Function called by variable_decl() that adds a name to a structure | |
2118 | being built. */ | |
2119 | ||
524af0d6 | 2120 | static bool |
636dff67 SK |
2121 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2122 | gfc_array_spec **as) | |
6de9cd9a | 2123 | { |
f6288c24 | 2124 | gfc_state_data *s; |
6de9cd9a DN |
2125 | gfc_component *c; |
2126 | ||
619dd721 | 2127 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 2128 | constructing, it must have the pointer attribute. */ |
619dd721 | 2129 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 2130 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
2131 | && current_attr.pointer == 0) |
2132 | { | |
bf9f15ee PT |
2133 | if (current_attr.allocatable |
2134 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2135 | "must have the POINTER attribute")) | |
2136 | { | |
2137 | return false; | |
2138 | } | |
2139 | else if (current_attr.allocatable == 0) | |
2140 | { | |
9cbf8673 JW |
2141 | gfc_error ("Component at %C must have the POINTER attribute"); |
2142 | return false; | |
2143 | } | |
6de9cd9a | 2144 | } |
9cbf8673 JW |
2145 | |
2146 | /* F03:C437. */ | |
2147 | if (current_ts.type == BT_CLASS | |
2148 | && !(current_attr.pointer || current_attr.allocatable)) | |
2149 | { | |
2150 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2151 | "or pointer", name); | |
2152 | return false; | |
bf9f15ee | 2153 | } |
6de9cd9a | 2154 | |
636dff67 | 2155 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
2156 | { |
2157 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2158 | { | |
2159 | gfc_error ("Array component of structure at %C must have explicit " | |
2160 | "or deferred shape"); | |
524af0d6 | 2161 | return false; |
6de9cd9a DN |
2162 | } |
2163 | } | |
2164 | ||
f6288c24 FR |
2165 | /* If we are in a nested union/map definition, gfc_add_component will not |
2166 | properly find repeated components because: | |
6442a6f4 | 2167 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
2168 | and maps are implicity chained so nested components may conflict. |
2169 | (ii) Unions and maps are not linked as components of their parent | |
2170 | structures until after they are parsed. | |
2171 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2172 | we search each block directly from the parse stack until we find the top | |
2173 | level structure. */ | |
2174 | ||
2175 | s = gfc_state_stack; | |
2176 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2177 | { | |
2178 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2179 | { | |
2180 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2181 | if (c != NULL) | |
2182 | { | |
2f029c08 | 2183 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
2184 | name, &c->loc); |
2185 | return false; | |
2186 | } | |
2187 | /* Break after we've searched the entire chain. */ | |
2188 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2189 | break; | |
2190 | s = s->previous; | |
2191 | } | |
2192 | } | |
2193 | ||
524af0d6 JB |
2194 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2195 | return false; | |
6de9cd9a DN |
2196 | |
2197 | c->ts = current_ts; | |
bc21d315 JW |
2198 | if (c->ts.type == BT_CHARACTER) |
2199 | c->ts.u.cl = cl; | |
5bab4c96 PT |
2200 | |
2201 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2202 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2203 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2204 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2205 | ||
d4b7d0f0 | 2206 | c->attr = current_attr; |
6de9cd9a DN |
2207 | |
2208 | c->initializer = *init; | |
2209 | *init = NULL; | |
2210 | ||
2211 | c->as = *as; | |
2212 | if (c->as != NULL) | |
be59db2d TB |
2213 | { |
2214 | if (c->as->corank) | |
2215 | c->attr.codimension = 1; | |
2216 | if (c->as->rank) | |
2217 | c->attr.dimension = 1; | |
2218 | } | |
6de9cd9a DN |
2219 | *as = NULL; |
2220 | ||
7fc61626 | 2221 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2222 | |
6de9cd9a | 2223 | /* Check array components. */ |
d4b7d0f0 | 2224 | if (!c->attr.dimension) |
2e23972e | 2225 | goto scalar; |
6de9cd9a | 2226 | |
d4b7d0f0 | 2227 | if (c->attr.pointer) |
6de9cd9a DN |
2228 | { |
2229 | if (c->as->type != AS_DEFERRED) | |
2230 | { | |
5046aff5 PT |
2231 | gfc_error ("Pointer array component of structure at %C must have a " |
2232 | "deferred shape"); | |
a4f15a7d | 2233 | return false; |
5046aff5 PT |
2234 | } |
2235 | } | |
d4b7d0f0 | 2236 | else if (c->attr.allocatable) |
5046aff5 PT |
2237 | { |
2238 | if (c->as->type != AS_DEFERRED) | |
2239 | { | |
2240 | gfc_error ("Allocatable component of structure at %C must have a " | |
2241 | "deferred shape"); | |
a4f15a7d | 2242 | return false; |
6de9cd9a DN |
2243 | } |
2244 | } | |
2245 | else | |
2246 | { | |
2247 | if (c->as->type != AS_EXPLICIT) | |
2248 | { | |
636dff67 SK |
2249 | gfc_error ("Array component of structure at %C must have an " |
2250 | "explicit shape"); | |
a4f15a7d | 2251 | return false; |
6de9cd9a DN |
2252 | } |
2253 | } | |
2254 | ||
2e23972e JW |
2255 | scalar: |
2256 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2257 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2258 | |
5bab4c96 PT |
2259 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2260 | { | |
2261 | gfc_symbol *sym; | |
2262 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2263 | 0, &sym); | |
2264 | if (sym == NULL) | |
2265 | { | |
2266 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2267 | "in the type parameter name list at %L", | |
2268 | c->name, &gfc_current_block ()->declared_at); | |
2269 | return false; | |
2270 | } | |
2271 | sym->ts = c->ts; | |
2272 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2273 | sym->attr.pdt_len = c->attr.pdt_len; | |
2274 | if (c->initializer) | |
2275 | sym->value = gfc_copy_expr (c->initializer); | |
2276 | sym->attr.flavor = FL_VARIABLE; | |
2277 | } | |
2278 | ||
2279 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2280 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2281 | && decl_type_param_list) | |
2282 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2283 | ||
a4f15a7d | 2284 | return true; |
6de9cd9a DN |
2285 | } |
2286 | ||
2287 | ||
2288 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2289 | ||
2290 | match | |
636dff67 | 2291 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2292 | { |
2293 | gfc_symbol *sym; | |
576f6da6 | 2294 | match m, m2 = MATCH_NO; |
6de9cd9a | 2295 | |
576f6da6 TB |
2296 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2297 | return MATCH_ERROR; | |
2298 | ||
2299 | if (m == MATCH_NO) | |
2300 | { | |
2301 | locus old_loc; | |
2302 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2303 | ||
94241120 | 2304 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2305 | return m2; |
2306 | ||
2307 | old_loc = gfc_current_locus; | |
2308 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2309 | return MATCH_ERROR; | |
2310 | if (m2 != MATCH_YES | |
2311 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2312 | return MATCH_ERROR; | |
2313 | if (m2 == MATCH_NO) | |
2314 | { | |
2315 | gfc_current_locus = old_loc; | |
2316 | return MATCH_NO; | |
2317 | } | |
2318 | } | |
6de9cd9a DN |
2319 | |
2320 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2321 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2322 | { | |
2323 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2324 | return MATCH_ERROR; | |
2325 | } | |
2326 | ||
2327 | gfc_intrinsic_symbol (sym); | |
2328 | ||
2329 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2330 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2331 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2332 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2333 | return MATCH_ERROR; |
2334 | ||
b7e75771 | 2335 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2336 | |
576f6da6 TB |
2337 | /* Invalid per F2008, C512. */ |
2338 | if (m2 == MATCH_YES) | |
2339 | { | |
2340 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2341 | return MATCH_ERROR; | |
2342 | } | |
2343 | ||
6de9cd9a DN |
2344 | return MATCH_YES; |
2345 | } | |
2346 | ||
2347 | ||
80f95228 JW |
2348 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2349 | ||
2350 | static match | |
2351 | match_pointer_init (gfc_expr **init, int procptr) | |
2352 | { | |
2353 | match m; | |
2354 | ||
f6288c24 | 2355 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2356 | { |
2357 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2358 | "a PURE procedure"); | |
2359 | return MATCH_ERROR; | |
2360 | } | |
ccd7751b | 2361 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2362 | |
eea58adb | 2363 | /* Match NULL() initialization. */ |
80f95228 JW |
2364 | m = gfc_match_null (init); |
2365 | if (m != MATCH_NO) | |
2366 | return m; | |
2367 | ||
2368 | /* Match non-NULL initialization. */ | |
837c4b78 | 2369 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2370 | gfc_matching_procptr_assignment = procptr; |
2371 | m = gfc_match_rvalue (init); | |
837c4b78 | 2372 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2373 | gfc_matching_procptr_assignment = 0; |
2374 | if (m == MATCH_ERROR) | |
2375 | return MATCH_ERROR; | |
2376 | else if (m == MATCH_NO) | |
2377 | { | |
2378 | gfc_error ("Error in pointer initialization at %C"); | |
2379 | return MATCH_ERROR; | |
2380 | } | |
2381 | ||
dc9a54fa JW |
2382 | if (!procptr && !gfc_resolve_expr (*init)) |
2383 | return MATCH_ERROR; | |
f5acf0f2 | 2384 | |
524af0d6 JB |
2385 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2386 | "initialization at %C")) | |
80f95228 JW |
2387 | return MATCH_ERROR; |
2388 | ||
2389 | return MATCH_YES; | |
2390 | } | |
2391 | ||
2392 | ||
524af0d6 | 2393 | static bool |
bb9de0c4 JW |
2394 | check_function_name (char *name) |
2395 | { | |
2396 | /* In functions that have a RESULT variable defined, the function name always | |
2397 | refers to function calls. Therefore, the name is not allowed to appear in | |
2398 | specification statements. When checking this, be careful about | |
2399 | 'hidden' procedure pointer results ('ppr@'). */ | |
2400 | ||
2401 | if (gfc_current_state () == COMP_FUNCTION) | |
2402 | { | |
2403 | gfc_symbol *block = gfc_current_block (); | |
2404 | if (block && block->result && block->result != block | |
2405 | && strcmp (block->result->name, "ppr@") != 0 | |
2406 | && strcmp (block->name, name) == 0) | |
2407 | { | |
ba77f7ba SK |
2408 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2409 | "from appearing in a specification statement", | |
2410 | block->result->name, &block->result->declared_at, name); | |
524af0d6 | 2411 | return false; |
bb9de0c4 JW |
2412 | } |
2413 | } | |
2414 | ||
524af0d6 | 2415 | return true; |
bb9de0c4 JW |
2416 | } |
2417 | ||
2418 | ||
6de9cd9a DN |
2419 | /* Match a variable name with an optional initializer. When this |
2420 | subroutine is called, a variable is expected to be parsed next. | |
2421 | Depending on what is happening at the moment, updates either the | |
2422 | symbol table or the current interface. */ | |
2423 | ||
2424 | static match | |
949d5b72 | 2425 | variable_decl (int elem) |
6de9cd9a DN |
2426 | { |
2427 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2428 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2429 | gfc_expr *initializer, *char_len; |
2430 | gfc_array_spec *as; | |
83d890b9 | 2431 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2432 | gfc_charlen *cl; |
e69afb29 | 2433 | bool cl_deferred; |
6de9cd9a DN |
2434 | locus var_locus; |
2435 | match m; | |
524af0d6 | 2436 | bool t; |
83d890b9 | 2437 | gfc_symbol *sym; |
6de9cd9a DN |
2438 | |
2439 | initializer = NULL; | |
2440 | as = NULL; | |
83d890b9 | 2441 | cp_as = NULL; |
6de9cd9a DN |
2442 | |
2443 | /* When we get here, we've just matched a list of attributes and | |
2444 | maybe a type and a double colon. The next thing we expect to see | |
2445 | is the name of the symbol. */ | |
6f855a26 FR |
2446 | |
2447 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2448 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2449 | m = MATCH_NO; | |
2450 | gfc_gobble_whitespace (); | |
2451 | if (gfc_peek_ascii_char () == '%') | |
2452 | { | |
2453 | gfc_next_ascii_char (); | |
2454 | m = gfc_match ("fill"); | |
2455 | } | |
2456 | ||
6de9cd9a | 2457 | if (m != MATCH_YES) |
6f855a26 FR |
2458 | { |
2459 | m = gfc_match_name (name); | |
2460 | if (m != MATCH_YES) | |
2461 | goto cleanup; | |
2462 | } | |
2463 | ||
2464 | else | |
2465 | { | |
2466 | m = MATCH_ERROR; | |
2467 | if (gfc_current_state () != COMP_STRUCTURE) | |
2468 | { | |
2469 | if (flag_dec_structure) | |
2470 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2471 | else | |
2472 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2473 | "%<-fdec-structure%>", "%FILL"); | |
2474 | goto cleanup; | |
2475 | } | |
2476 | ||
2477 | if (attr_seen) | |
2478 | { | |
2479 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2480 | goto cleanup; | |
2481 | } | |
2482 | ||
2483 | /* %FILL components are given invalid fortran names. */ | |
2484 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
6f855a26 | 2485 | } |
6de9cd9a | 2486 | |
63645982 | 2487 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2488 | |
2489 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2490 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2491 | if (m == MATCH_ERROR) |
6de9cd9a | 2492 | goto cleanup; |
25d8f0a2 | 2493 | |
6de9cd9a DN |
2494 | if (m == MATCH_NO) |
2495 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2496 | else if (current_as |
524af0d6 | 2497 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2498 | { |
2499 | m = MATCH_ERROR; | |
2500 | goto cleanup; | |
2501 | } | |
6de9cd9a | 2502 | |
c61819ff | 2503 | if (flag_cray_pointer) |
11126dc0 AL |
2504 | cp_as = gfc_copy_array_spec (as); |
2505 | ||
f5ca06e6 DK |
2506 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2507 | determine (and check) whether it can be implied-shape. If it | |
67914693 | 2508 | was parsed as assumed-size, change it because PARAMETERs cannot |
09ef33c1 SK |
2509 | be assumed-size. |
2510 | ||
2511 | An explicit-shape-array cannot appear under several conditions. | |
2512 | That check is done here as well. */ | |
f5ca06e6 DK |
2513 | if (as) |
2514 | { | |
2515 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2516 | { | |
2517 | m = MATCH_ERROR; | |
1fe61adf | 2518 | gfc_error ("Non-PARAMETER symbol %qs at %L cannot be implied-shape", |
f5ca06e6 DK |
2519 | name, &var_locus); |
2520 | goto cleanup; | |
2521 | } | |
2522 | ||
2523 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2524 | && current_attr.flavor == FL_PARAMETER) | |
2525 | as->type = AS_IMPLIED_SHAPE; | |
2526 | ||
2527 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2528 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2529 | &var_locus)) |
f5ca06e6 DK |
2530 | { |
2531 | m = MATCH_ERROR; | |
2532 | goto cleanup; | |
2533 | } | |
09ef33c1 SK |
2534 | |
2535 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2536 | constant expressions shall appear only in a subprogram, derived | |
2537 | type definition, BLOCK construct, or interface body. */ | |
2538 | if (as->type == AS_EXPLICIT | |
2539 | && gfc_current_state () != COMP_BLOCK | |
2540 | && gfc_current_state () != COMP_DERIVED | |
2541 | && gfc_current_state () != COMP_FUNCTION | |
2542 | && gfc_current_state () != COMP_INTERFACE | |
2543 | && gfc_current_state () != COMP_SUBROUTINE) | |
2544 | { | |
2545 | gfc_expr *e; | |
2546 | bool not_constant = false; | |
2547 | ||
2548 | for (int i = 0; i < as->rank; i++) | |
2549 | { | |
2550 | e = gfc_copy_expr (as->lower[i]); | |
2551 | gfc_resolve_expr (e); | |
2552 | gfc_simplify_expr (e, 0); | |
2553 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2554 | { | |
2555 | not_constant = true; | |
2556 | break; | |
2557 | } | |
2558 | gfc_free_expr (e); | |
2559 | ||
2560 | e = gfc_copy_expr (as->upper[i]); | |
2561 | gfc_resolve_expr (e); | |
2562 | gfc_simplify_expr (e, 0); | |
2563 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2564 | { | |
2565 | not_constant = true; | |
2566 | break; | |
2567 | } | |
2568 | gfc_free_expr (e); | |
2569 | } | |
2570 | ||
2571 | if (not_constant) | |
5b9a3332 | 2572 | { |
09ef33c1 SK |
2573 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2574 | m = MATCH_ERROR; | |
2575 | goto cleanup; | |
2576 | } | |
2577 | } | |
078c5aff TK |
2578 | if (as->type == AS_EXPLICIT) |
2579 | { | |
2580 | for (int i = 0; i < as->rank; i++) | |
2581 | { | |
2582 | gfc_expr *e, *n; | |
2583 | e = as->lower[i]; | |
2584 | if (e->expr_type != EXPR_CONSTANT) | |
2585 | { | |
2586 | n = gfc_copy_expr (e); | |
2587 | gfc_simplify_expr (n, 1); | |
2588 | if (n->expr_type == EXPR_CONSTANT) | |
2589 | gfc_replace_expr (e, n); | |
2590 | else | |
2591 | gfc_free_expr (n); | |
2592 | } | |
2593 | e = as->upper[i]; | |
2594 | if (e->expr_type != EXPR_CONSTANT) | |
2595 | { | |
2596 | n = gfc_copy_expr (e); | |
2597 | gfc_simplify_expr (n, 1); | |
2598 | if (n->expr_type == EXPR_CONSTANT) | |
2599 | gfc_replace_expr (e, n); | |
2600 | else | |
2601 | gfc_free_expr (n); | |
2602 | } | |
2603 | } | |
2604 | } | |
f5ca06e6 DK |
2605 | } |
2606 | ||
6de9cd9a DN |
2607 | char_len = NULL; |
2608 | cl = NULL; | |
e69afb29 | 2609 | cl_deferred = false; |
6de9cd9a DN |
2610 | |
2611 | if (current_ts.type == BT_CHARACTER) | |
2612 | { | |
2767f2cc | 2613 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2614 | { |
2615 | case MATCH_YES: | |
b76e28c6 | 2616 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2617 | |
2618 | cl->length = char_len; | |
2619 | break; | |
2620 | ||
949d5b72 | 2621 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2622 | element. Also copy assumed lengths. */ |
6de9cd9a | 2623 | case MATCH_NO: |
9b21a380 | 2624 | if (elem > 1 |
bc21d315 JW |
2625 | && (current_ts.u.cl->length == NULL |
2626 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2627 | { |
b76e28c6 | 2628 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2629 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2630 | } |
2631 | else | |
bc21d315 | 2632 | cl = current_ts.u.cl; |
949d5b72 | 2633 | |
e69afb29 SK |
2634 | cl_deferred = current_ts.deferred; |
2635 | ||
6de9cd9a DN |
2636 | break; |
2637 | ||
2638 | case MATCH_ERROR: | |
2639 | goto cleanup; | |
2640 | } | |
2641 | } | |
2642 | ||
4668d6f9 PT |
2643 | /* The dummy arguments and result of the abreviated form of MODULE |
2644 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2645 | if (gfc_current_ns->proc_name | |
2646 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2647 | { | |
2648 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2649 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2650 | { | |
2651 | m = MATCH_ERROR; | |
811582ec | 2652 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2653 | "in the corresponding interface for MODULE " |
811582ec | 2654 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2655 | gfc_current_ns->proc_name->name); |
2656 | goto cleanup; | |
2657 | } | |
2658 | } | |
2659 | ||
6f855a26 | 2660 | /* %FILL components may not have initializers. */ |
2eb3745a | 2661 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
6f855a26 FR |
2662 | { |
2663 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2664 | m = MATCH_ERROR; | |
2665 | goto cleanup; | |
2666 | } | |
2667 | ||
83d890b9 | 2668 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2669 | and this is not a component declaration, |
66e4ab31 | 2670 | then we want to set the type & bail out. */ |
f6288c24 | 2671 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2672 | { |
2673 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2674 | if (sym != NULL && sym->attr.cray_pointee) | |
2675 | { | |
83d890b9 | 2676 | m = MATCH_YES; |
5b9a3332 PT |
2677 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2678 | { | |
2679 | m = MATCH_ERROR; | |
2680 | goto cleanup; | |
2681 | } | |
f5acf0f2 | 2682 | |
83d890b9 AL |
2683 | /* Check to see if we have an array specification. */ |
2684 | if (cp_as != NULL) | |
2685 | { | |
2686 | if (sym->as != NULL) | |
2687 | { | |
e25a0da3 | 2688 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2689 | gfc_free_array_spec (cp_as); |
2690 | m = MATCH_ERROR; | |
2691 | goto cleanup; | |
2692 | } | |
2693 | else | |
2694 | { | |
524af0d6 | 2695 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
1fe61adf | 2696 | gfc_internal_error ("Cannot set pointee array spec."); |
d51347f9 | 2697 | |
83d890b9 | 2698 | /* Fix the array spec. */ |
d51347f9 | 2699 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2700 | if (m == MATCH_ERROR) |
2701 | goto cleanup; | |
2702 | } | |
d51347f9 | 2703 | } |
83d890b9 AL |
2704 | goto cleanup; |
2705 | } | |
2706 | else | |
2707 | { | |
2708 | gfc_free_array_spec (cp_as); | |
2709 | } | |
2710 | } | |
d51347f9 | 2711 | |
3070bab4 JW |
2712 | /* Procedure pointer as function result. */ |
2713 | if (gfc_current_state () == COMP_FUNCTION | |
2714 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2715 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2716 | strcpy (name, "ppr@"); | |
2717 | ||
2718 | if (gfc_current_state () == COMP_FUNCTION | |
2719 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2720 | && gfc_current_block ()->result | |
2721 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2722 | strcpy (name, "ppr@"); | |
d51347f9 | 2723 | |
6de9cd9a DN |
2724 | /* OK, we've successfully matched the declaration. Now put the |
2725 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2726 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2727 | perfectly legal: |
2728 | ||
2729 | integer, parameter :: i = huge(i) | |
2730 | ||
2731 | This is only true for parameters or variables of a basic type. | |
2732 | For components of derived types, it is not true, so we don't | |
2733 | create a symbol for those yet. If we fail to create the symbol, | |
2734 | bail out. */ | |
f6288c24 | 2735 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2736 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2737 | { |
72af9f0b PT |
2738 | m = MATCH_ERROR; |
2739 | goto cleanup; | |
2740 | } | |
2741 | ||
524af0d6 | 2742 | if (!check_function_name (name)) |
6de9cd9a | 2743 | { |
6de9cd9a DN |
2744 | m = MATCH_ERROR; |
2745 | goto cleanup; | |
2746 | } | |
2747 | ||
294fbfc8 TS |
2748 | /* We allow old-style initializations of the form |
2749 | integer i /2/, j(4) /3*3, 1/ | |
2750 | (if no colon has been seen). These are different from data | |
2751 | statements in that initializers are only allowed to apply to the | |
2752 | variable immediately preceding, i.e. | |
2753 | integer i, j /1, 2/ | |
2754 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2755 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2756 | |
2757 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2758 | { | |
524af0d6 JB |
2759 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2760 | "initialization at %C")) | |
294fbfc8 | 2761 | return MATCH_ERROR; |
f6288c24 FR |
2762 | |
2763 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2764 | but not components of derived types. */ | |
b18f1efc JJ |
2765 | else if (gfc_current_state () == COMP_DERIVED) |
2766 | { | |
2767 | gfc_error ("Invalid old style initialization for derived type " | |
2768 | "component at %C"); | |
2769 | m = MATCH_ERROR; | |
2770 | goto cleanup; | |
2771 | } | |
f5acf0f2 | 2772 | |
f6288c24 FR |
2773 | /* For structure components, read the initializer as a special |
2774 | expression and let the rest of this function apply the initializer | |
2775 | as usual. */ | |
2776 | else if (gfc_comp_struct (gfc_current_state ())) | |
2777 | { | |
2778 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2779 | if (m == MATCH_NO) | |
2780 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2781 | name); | |
2782 | if (m != MATCH_YES) | |
2783 | goto cleanup; | |
2784 | } | |
2785 | ||
2786 | /* Otherwise we treat the old style initialization just like a | |
2787 | DATA declaration for the current variable. */ | |
2788 | else | |
2789 | return match_old_style_init (name); | |
294fbfc8 TS |
2790 | } |
2791 | ||
6de9cd9a DN |
2792 | /* The double colon must be present in order to have initializers. |
2793 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2794 | if (colon_seen) | |
2795 | { | |
2796 | if (gfc_match (" =>") == MATCH_YES) | |
2797 | { | |
6de9cd9a DN |
2798 | if (!current_attr.pointer) |
2799 | { | |
2800 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2801 | m = MATCH_ERROR; | |
2802 | goto cleanup; | |
2803 | } | |
2804 | ||
80f95228 | 2805 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2806 | if (m != MATCH_YES) |
2807 | goto cleanup; | |
2cf4aa79 SK |
2808 | |
2809 | /* The target of a pointer initialization must have the SAVE | |
2810 | attribute. A variable in PROGRAM, MODULE, or SUBMODULE scope | |
2811 | is implicit SAVEd. Explicitly, set the SAVE_IMPLICIT value. */ | |
2812 | if (initializer->expr_type == EXPR_VARIABLE | |
2813 | && initializer->symtree->n.sym->attr.save == SAVE_NONE | |
2814 | && (gfc_current_state () == COMP_PROGRAM | |
2815 | || gfc_current_state () == COMP_MODULE | |
2816 | || gfc_current_state () == COMP_SUBMODULE)) | |
2817 | initializer->symtree->n.sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2818 | } |
2819 | else if (gfc_match_char ('=') == MATCH_YES) | |
2820 | { | |
2821 | if (current_attr.pointer) | |
2822 | { | |
a4d9b221 TB |
2823 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2824 | "not %<=%>"); | |
6de9cd9a DN |
2825 | m = MATCH_ERROR; |
2826 | goto cleanup; | |
2827 | } | |
2828 | ||
2829 | m = gfc_match_init_expr (&initializer); | |
2830 | if (m == MATCH_NO) | |
2831 | { | |
2832 | gfc_error ("Expected an initialization expression at %C"); | |
2833 | m = MATCH_ERROR; | |
2834 | } | |
2835 | ||
ade20620 | 2836 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2837 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2838 | { |
636dff67 SK |
2839 | gfc_error ("Initialization of variable at %C is not allowed in " |
2840 | "a PURE procedure"); | |
6de9cd9a DN |
2841 | m = MATCH_ERROR; |
2842 | } | |
2843 | ||
ccd7751b | 2844 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2845 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2846 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2847 | ||
6de9cd9a DN |
2848 | if (m != MATCH_YES) |
2849 | goto cleanup; | |
2850 | } | |
cb44ab82 VL |
2851 | } |
2852 | ||
5046aff5 | 2853 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2854 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2855 | { |
636dff67 SK |
2856 | gfc_error ("Initialization of allocatable component at %C is not " |
2857 | "allowed"); | |
5046aff5 PT |
2858 | m = MATCH_ERROR; |
2859 | goto cleanup; | |
2860 | } | |
2861 | ||
18a4e7e3 PT |
2862 | if (gfc_current_state () == COMP_DERIVED |
2863 | && gfc_current_block ()->attr.pdt_template) | |
2864 | { | |
2865 | gfc_symbol *param; | |
2866 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2867 | 0, ¶m); | |
2868 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2869 | { | |
2870 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2871 | "not appear in the type parameter list at %L", | |
2872 | &gfc_current_block ()->declared_at); | |
2873 | m = MATCH_ERROR; | |
2874 | goto cleanup; | |
2875 | } | |
2876 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2877 | { | |
2878 | gfc_error ("The component at %C that appears in the type parameter " | |
2879 | "list at %L has neither the KIND nor LEN attribute", | |
2880 | &gfc_current_block ()->declared_at); | |
2881 | m = MATCH_ERROR; | |
2882 | goto cleanup; | |
2883 | } | |
2884 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2885 | { | |
2886 | gfc_error ("The component at %C which is a type parameter must be " | |
2887 | "a scalar"); | |
2888 | m = MATCH_ERROR; | |
2889 | goto cleanup; | |
2890 | } | |
2891 | else if (param && initializer) | |
2892 | param->value = gfc_copy_expr (initializer); | |
2893 | } | |
2894 | ||
e310b381 | 2895 | /* Before adding a possible initilizer, do a simple check for compatibility |
26ca4e05 | 2896 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
e310b381 SK |
2897 | good thing. */ |
2898 | if (current_ts.type == BT_DERIVED && initializer | |
2899 | && (gfc_numeric_ts (&initializer->ts) | |
2900 | || initializer->ts.type == BT_LOGICAL | |
2901 | || initializer->ts.type == BT_CHARACTER)) | |
2902 | { | |
26ca4e05 | 2903 | gfc_error ("Incompatible initialization between a derived type " |
e310b381 SK |
2904 | "entity and an entity with %qs type at %C", |
2905 | gfc_typename (&initializer->ts)); | |
2906 | m = MATCH_ERROR; | |
2907 | goto cleanup; | |
2908 | } | |
2909 | ||
2910 | ||
54b4ba60 | 2911 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2912 | NULL here, because we sometimes also need to check if a |
2913 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2914 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2915 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2916 | else | |
54b4ba60 | 2917 | { |
5046aff5 | 2918 | if (current_ts.type == BT_DERIVED |
636dff67 | 2919 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2920 | initializer = gfc_default_initializer (¤t_ts); |
2921 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2922 | |
2923 | /* If we match a nested structure definition we expect to see the | |
2924 | * body even if the variable declarations blow up, so we need to keep | |
2925 | * the structure declaration around. */ | |
2926 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2927 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2928 | } |
6de9cd9a | 2929 | |
524af0d6 | 2930 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2931 | |
2932 | cleanup: | |
2933 | /* Free stuff up and return. */ | |
2934 | gfc_free_expr (initializer); | |
2935 | gfc_free_array_spec (as); | |
2936 | ||
2937 | return m; | |
2938 | } | |
2939 | ||
2940 | ||
b2b81a3f BM |
2941 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2942 | This assumes that the byte size is equal to the kind number for | |
2943 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2944 | |
2945 | match | |
636dff67 | 2946 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2947 | { |
2948 | match m; | |
5cf54585 | 2949 | int original_kind; |
6de9cd9a DN |
2950 | |
2951 | if (gfc_match_char ('*') != MATCH_YES) | |
2952 | return MATCH_NO; | |
2953 | ||
5cf54585 | 2954 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2955 | if (m != MATCH_YES) |
2956 | return MATCH_ERROR; | |
2957 | ||
e45b3c75 ES |
2958 | original_kind = ts->kind; |
2959 | ||
6de9cd9a | 2960 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2961 | if (ts->type == BT_COMPLEX) |
2962 | { | |
2963 | if (ts->kind % 2) | |
636dff67 SK |
2964 | { |
2965 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2966 | gfc_basic_typename (ts->type), original_kind); | |
2967 | return MATCH_ERROR; | |
2968 | } | |
e45b3c75 | 2969 | ts->kind /= 2; |
f4347334 ZG |
2970 | |
2971 | } | |
2972 | ||
203c7ebf | 2973 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2974 | ts->kind = 8; |
2975 | ||
2976 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2977 | { | |
2978 | if (ts->kind == 4) | |
2979 | { | |
203c7ebf | 2980 | if (flag_real4_kind == 8) |
f4347334 | 2981 | ts->kind = 8; |
203c7ebf | 2982 | if (flag_real4_kind == 10) |
f4347334 | 2983 | ts->kind = 10; |
203c7ebf | 2984 | if (flag_real4_kind == 16) |
f4347334 ZG |
2985 | ts->kind = 16; |
2986 | } | |
2987 | ||
2988 | if (ts->kind == 8) | |
2989 | { | |
203c7ebf | 2990 | if (flag_real8_kind == 4) |
f4347334 | 2991 | ts->kind = 4; |
203c7ebf | 2992 | if (flag_real8_kind == 10) |
f4347334 | 2993 | ts->kind = 10; |
203c7ebf | 2994 | if (flag_real8_kind == 16) |
f4347334 ZG |
2995 | ts->kind = 16; |
2996 | } | |
e45b3c75 | 2997 | } |
6de9cd9a | 2998 | |
e7a2d5fb | 2999 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 3000 | { |
e45b3c75 | 3001 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 3002 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
3003 | return MATCH_ERROR; |
3004 | } | |
3005 | ||
70112e2a PT |
3006 | if (!gfc_notify_std (GFC_STD_GNU, |
3007 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 3008 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
3009 | return MATCH_ERROR; |
3010 | ||
6de9cd9a DN |
3011 | return MATCH_YES; |
3012 | } | |
3013 | ||
3014 | ||
3015 | /* Match a kind specification. Since kinds are generally optional, we | |
3016 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
3017 | string is found, then we know we have an error. */ | |
3018 | ||
3019 | match | |
e2d29968 | 3020 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 3021 | { |
e2d29968 | 3022 | locus where, loc; |
6de9cd9a DN |
3023 | gfc_expr *e; |
3024 | match m, n; | |
96ee3a4a | 3025 | char c; |
6de9cd9a DN |
3026 | |
3027 | m = MATCH_NO; | |
e2d29968 | 3028 | n = MATCH_YES; |
6de9cd9a | 3029 | e = NULL; |
5bab4c96 | 3030 | saved_kind_expr = NULL; |
6de9cd9a | 3031 | |
e2d29968 PT |
3032 | where = loc = gfc_current_locus; |
3033 | ||
3034 | if (kind_expr_only) | |
3035 | goto kind_expr; | |
6de9cd9a DN |
3036 | |
3037 | if (gfc_match_char ('(') == MATCH_NO) | |
3038 | return MATCH_NO; | |
3039 | ||
3040 | /* Also gobbles optional text. */ | |
3041 | if (gfc_match (" kind = ") == MATCH_YES) | |
3042 | m = MATCH_ERROR; | |
3043 | ||
e2d29968 PT |
3044 | loc = gfc_current_locus; |
3045 | ||
3046 | kind_expr: | |
5bab4c96 | 3047 | |
6de9cd9a | 3048 | n = gfc_match_init_expr (&e); |
e2d29968 | 3049 | |
5bab4c96 PT |
3050 | if (gfc_derived_parameter_expr (e)) |
3051 | { | |
3052 | ts->kind = 0; | |
3053 | saved_kind_expr = gfc_copy_expr (e); | |
3054 | goto close_brackets; | |
3055 | } | |
3056 | ||
6de9cd9a | 3057 | if (n != MATCH_YES) |
e2d29968 | 3058 | { |
1c8bcdf7 | 3059 | if (gfc_matching_function) |
e2d29968 | 3060 | { |
f5acf0f2 | 3061 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
3062 | imported parameters and try again after the specification |
3063 | expressions..... */ | |
e2d29968 PT |
3064 | if (gfc_match_char (')') != MATCH_YES) |
3065 | { | |
3066 | gfc_error ("Missing right parenthesis at %C"); | |
3067 | m = MATCH_ERROR; | |
3068 | goto no_match; | |
3069 | } | |
3070 | ||
3071 | gfc_free_expr (e); | |
e2d29968 PT |
3072 | gfc_undo_symbols (); |
3073 | return MATCH_YES; | |
3074 | } | |
3075 | else | |
3076 | { | |
3077 | /* ....or else, the match is real. */ | |
3078 | if (n == MATCH_NO) | |
3079 | gfc_error ("Expected initialization expression at %C"); | |
3080 | if (n != MATCH_YES) | |
3081 | return MATCH_ERROR; | |
3082 | } | |
3083 | } | |
6de9cd9a DN |
3084 | |
3085 | if (e->rank != 0) | |
3086 | { | |
3087 | gfc_error ("Expected scalar initialization expression at %C"); | |
3088 | m = MATCH_ERROR; | |
3089 | goto no_match; | |
3090 | } | |
3091 | ||
51f03c6b | 3092 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 3093 | { |
6de9cd9a DN |
3094 | m = MATCH_ERROR; |
3095 | goto no_match; | |
3096 | } | |
3097 | ||
a8b3b0b6 CR |
3098 | /* Before throwing away the expression, let's see if we had a |
3099 | C interoperable kind (and store the fact). */ | |
3100 | if (e->ts.is_c_interop == 1) | |
3101 | { | |
eea58adb | 3102 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
3103 | of the named constants from iso_c_binding. */ |
3104 | ts->is_c_interop = e->ts.is_iso_c; | |
3105 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
3106 | if (e->symtree) |
3107 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 3108 | } |
f5acf0f2 | 3109 | |
6de9cd9a DN |
3110 | gfc_free_expr (e); |
3111 | e = NULL; | |
3112 | ||
a8b3b0b6 CR |
3113 | /* Ignore errors to this point, if we've gotten here. This means |
3114 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 3115 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
3116 | { |
3117 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3118 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
3119 | gfc_current_locus = where; |
3120 | return MATCH_ERROR; | |
6de9cd9a | 3121 | } |
96ee3a4a | 3122 | |
2ec855f1 TB |
3123 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3124 | if, e.g., c_double is used for COMPLEX as the standard | |
3125 | explicitly says that the kind type parameter for complex and real | |
3126 | variable is the same, i.e. c_float == c_float_complex. */ | |
3127 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3128 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3129 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 3130 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
3131 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3132 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 3133 | |
5bab4c96 PT |
3134 | close_brackets: |
3135 | ||
96ee3a4a | 3136 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
3137 | if ((c = gfc_next_ascii_char ()) != ')' |
3138 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 3139 | { |
96ee3a4a TB |
3140 | if (ts->type == BT_CHARACTER) |
3141 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3142 | else | |
3143 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 3144 | m = MATCH_ERROR; |
6de9cd9a | 3145 | } |
a8b3b0b6 CR |
3146 | else |
3147 | /* All tests passed. */ | |
3148 | m = MATCH_YES; | |
6de9cd9a | 3149 | |
a8b3b0b6 CR |
3150 | if(m == MATCH_ERROR) |
3151 | gfc_current_locus = where; | |
f4347334 | 3152 | |
203c7ebf | 3153 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
3154 | ts->kind = 8; |
3155 | ||
3156 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3157 | { | |
3158 | if (ts->kind == 4) | |
3159 | { | |
203c7ebf | 3160 | if (flag_real4_kind == 8) |
f4347334 | 3161 | ts->kind = 8; |
203c7ebf | 3162 | if (flag_real4_kind == 10) |
f4347334 | 3163 | ts->kind = 10; |
203c7ebf | 3164 | if (flag_real4_kind == 16) |
f4347334 ZG |
3165 | ts->kind = 16; |
3166 | } | |
3167 | ||
3168 | if (ts->kind == 8) | |
3169 | { | |
203c7ebf | 3170 | if (flag_real8_kind == 4) |
f4347334 | 3171 | ts->kind = 4; |
203c7ebf | 3172 | if (flag_real8_kind == 10) |
f4347334 | 3173 | ts->kind = 10; |
203c7ebf | 3174 | if (flag_real8_kind == 16) |
f4347334 ZG |
3175 | ts->kind = 16; |
3176 | } | |
3177 | } | |
3178 | ||
a8b3b0b6 CR |
3179 | /* Return what we know from the test(s). */ |
3180 | return m; | |
6de9cd9a DN |
3181 | |
3182 | no_match: | |
3183 | gfc_free_expr (e); | |
63645982 | 3184 | gfc_current_locus = where; |
6de9cd9a DN |
3185 | return m; |
3186 | } | |
3187 | ||
3188 | ||
187de1ed FXC |
3189 | static match |
3190 | match_char_kind (int * kind, int * is_iso_c) | |
3191 | { | |
3192 | locus where; | |
3193 | gfc_expr *e; | |
3194 | match m, n; | |
51f03c6b | 3195 | bool fail; |
187de1ed FXC |
3196 | |
3197 | m = MATCH_NO; | |
3198 | e = NULL; | |
3199 | where = gfc_current_locus; | |
3200 | ||
3201 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 3202 | |
1c8bcdf7 | 3203 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 3204 | { |
1c8bcdf7 | 3205 | /* The expression might include use-associated or imported |
f5acf0f2 | 3206 | parameters and try again after the specification |
1c8bcdf7 | 3207 | expressions. */ |
96ee3a4a | 3208 | gfc_free_expr (e); |
96ee3a4a TB |
3209 | gfc_undo_symbols (); |
3210 | return MATCH_YES; | |
3211 | } | |
3212 | ||
187de1ed FXC |
3213 | if (n == MATCH_NO) |
3214 | gfc_error ("Expected initialization expression at %C"); | |
3215 | if (n != MATCH_YES) | |
3216 | return MATCH_ERROR; | |
3217 | ||
3218 | if (e->rank != 0) | |
3219 | { | |
3220 | gfc_error ("Expected scalar initialization expression at %C"); | |
3221 | m = MATCH_ERROR; | |
3222 | goto no_match; | |
3223 | } | |
3224 | ||
87f3a5cf PT |
3225 | if (gfc_derived_parameter_expr (e)) |
3226 | { | |
3227 | saved_kind_expr = e; | |
3228 | *kind = 0; | |
3229 | return MATCH_YES; | |
3230 | } | |
3231 | ||
51f03c6b | 3232 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 3233 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 3234 | if (fail) |
187de1ed | 3235 | { |
187de1ed FXC |
3236 | m = MATCH_ERROR; |
3237 | goto no_match; | |
3238 | } | |
3239 | ||
3240 | gfc_free_expr (e); | |
3241 | ||
3242 | /* Ignore errors to this point, if we've gotten here. This means | |
3243 | we ignore the m=MATCH_ERROR from above. */ | |
3244 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3245 | { | |
3246 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3247 | m = MATCH_ERROR; | |
3248 | } | |
3249 | else | |
3250 | /* All tests passed. */ | |
3251 | m = MATCH_YES; | |
3252 | ||
3253 | if (m == MATCH_ERROR) | |
3254 | gfc_current_locus = where; | |
f5acf0f2 | 3255 | |
187de1ed FXC |
3256 | /* Return what we know from the test(s). */ |
3257 | return m; | |
3258 | ||
3259 | no_match: | |
3260 | gfc_free_expr (e); | |
3261 | gfc_current_locus = where; | |
3262 | return m; | |
3263 | } | |
3264 | ||
8234e5e0 | 3265 | |
6de9cd9a DN |
3266 | /* Match the various kind/length specifications in a CHARACTER |
3267 | declaration. We don't return MATCH_NO. */ | |
3268 | ||
8234e5e0 SK |
3269 | match |
3270 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3271 | { |
187de1ed | 3272 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3273 | gfc_charlen *cl; |
3274 | gfc_expr *len; | |
3275 | match m; | |
e69afb29 | 3276 | bool deferred; |
187de1ed | 3277 | |
6de9cd9a DN |
3278 | len = NULL; |
3279 | seen_length = 0; | |
187de1ed FXC |
3280 | kind = 0; |
3281 | is_iso_c = 0; | |
e69afb29 | 3282 | deferred = false; |
6de9cd9a DN |
3283 | |
3284 | /* Try the old-style specification first. */ | |
3285 | old_char_selector = 0; | |
3286 | ||
2767f2cc | 3287 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3288 | if (m != MATCH_NO) |
3289 | { | |
3290 | if (m == MATCH_YES) | |
3291 | old_char_selector = 1; | |
3292 | seen_length = 1; | |
3293 | goto done; | |
3294 | } | |
3295 | ||
3296 | m = gfc_match_char ('('); | |
3297 | if (m != MATCH_YES) | |
3298 | { | |
a8b3b0b6 | 3299 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3300 | goto done; |
3301 | } | |
3302 | ||
a8b3b0b6 | 3303 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3304 | if (gfc_match (" kind =") == MATCH_YES) |
3305 | { | |
187de1ed | 3306 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3307 | |
6de9cd9a DN |
3308 | if (m == MATCH_ERROR) |
3309 | goto done; | |
3310 | if (m == MATCH_NO) | |
3311 | goto syntax; | |
3312 | ||
3313 | if (gfc_match (" , len =") == MATCH_NO) | |
3314 | goto rparen; | |
3315 | ||
e69afb29 | 3316 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3317 | if (m == MATCH_NO) |
3318 | goto syntax; | |
3319 | if (m == MATCH_ERROR) | |
3320 | goto done; | |
3321 | seen_length = 1; | |
3322 | ||
3323 | goto rparen; | |
3324 | } | |
3325 | ||
66e4ab31 | 3326 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3327 | if (gfc_match (" len =") == MATCH_YES) |
3328 | { | |
e69afb29 | 3329 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3330 | if (m == MATCH_NO) |
3331 | goto syntax; | |
3332 | if (m == MATCH_ERROR) | |
3333 | goto done; | |
3334 | seen_length = 1; | |
3335 | ||
3336 | if (gfc_match_char (')') == MATCH_YES) | |
3337 | goto done; | |
3338 | ||
3339 | if (gfc_match (" , kind =") != MATCH_YES) | |
3340 | goto syntax; | |
3341 | ||
187de1ed FXC |
3342 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3343 | goto done; | |
6de9cd9a DN |
3344 | |
3345 | goto rparen; | |
3346 | } | |
3347 | ||
66e4ab31 | 3348 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3349 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3350 | if (m == MATCH_NO) |
3351 | goto syntax; | |
3352 | if (m == MATCH_ERROR) | |
3353 | goto done; | |
3354 | seen_length = 1; | |
3355 | ||
3356 | m = gfc_match_char (')'); | |
3357 | if (m == MATCH_YES) | |
3358 | goto done; | |
3359 | ||
3360 | if (gfc_match_char (',') != MATCH_YES) | |
3361 | goto syntax; | |
3362 | ||
a8b3b0b6 | 3363 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3364 | |
187de1ed | 3365 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3366 | if (m == MATCH_ERROR) |
3367 | goto done; | |
3368 | if (m == MATCH_NO) | |
3369 | goto syntax; | |
3370 | ||
3371 | rparen: | |
3372 | /* Require a right-paren at this point. */ | |
3373 | m = gfc_match_char (')'); | |
3374 | if (m == MATCH_YES) | |
3375 | goto done; | |
3376 | ||
3377 | syntax: | |
3378 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3379 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3380 | gfc_free_expr (len); |
3381 | return m; | |
6de9cd9a DN |
3382 | |
3383 | done: | |
a99d95a2 PT |
3384 | /* Deal with character functions after USE and IMPORT statements. */ |
3385 | if (gfc_matching_function) | |
1c8bcdf7 | 3386 | { |
a99d95a2 | 3387 | gfc_free_expr (len); |
1c8bcdf7 PT |
3388 | gfc_undo_symbols (); |
3389 | return MATCH_YES; | |
3390 | } | |
3391 | ||
6de9cd9a DN |
3392 | if (m != MATCH_YES) |
3393 | { | |
3394 | gfc_free_expr (len); | |
3395 | return m; | |
3396 | } | |
3397 | ||
3398 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3399 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3400 | |
3401 | if (seen_length == 0) | |
f622221a | 3402 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3403 | else |
00df7c36 | 3404 | { |
3cf89a7b SK |
3405 | /* If gfortran ends up here, then len may be reducible to a constant. |
3406 | Try to do that here. If it does not reduce, simply assign len to | |
3407 | charlen. A complication occurs with user-defined generic functions, | |
3408 | which are not resolved. Use a private namespace to deal with | |
3409 | generic functions. */ | |
3410 | ||
00df7c36 SK |
3411 | if (len && len->expr_type != EXPR_CONSTANT) |
3412 | { | |
3cf89a7b | 3413 | gfc_namespace *old_ns; |
00df7c36 | 3414 | gfc_expr *e; |
3cf89a7b SK |
3415 | |
3416 | old_ns = gfc_current_ns; | |
3417 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3418 | ||
00df7c36 SK |
3419 | e = gfc_copy_expr (len); |
3420 | gfc_reduce_init_expr (e); | |
3421 | if (e->expr_type == EXPR_CONSTANT) | |
58da192e SK |
3422 | { |
3423 | gfc_replace_expr (len, e); | |
3424 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3425 | mpz_set_ui (len->value.integer, 0); | |
3426 | } | |
00df7c36 SK |
3427 | else |
3428 | gfc_free_expr (e); | |
3cf89a7b SK |
3429 | |
3430 | gfc_free_namespace (gfc_current_ns); | |
3431 | gfc_current_ns = old_ns; | |
00df7c36 | 3432 | } |
3cf89a7b SK |
3433 | |
3434 | cl->length = len; | |
00df7c36 | 3435 | } |
6de9cd9a | 3436 | |
bc21d315 | 3437 | ts->u.cl = cl; |
187de1ed | 3438 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3439 | ts->deferred = deferred; |
6de9cd9a | 3440 | |
eea58adb | 3441 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3442 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3443 | if (kind != 0) |
eea58adb | 3444 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3445 | of the named constants from iso_c_binding. */ |
3446 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3447 | else if (len != NULL) |
187de1ed FXC |
3448 | /* Here, we might have parsed something such as: character(c_char) |
3449 | In this case, the parsing code above grabs the c_char when | |
3450 | looking for the length (line 1690, roughly). it's the last | |
3451 | testcase for parsing the kind params of a character variable. | |
3452 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3453 | could be an error. |
187de1ed FXC |
3454 | To see if the user used a C interop kind, test the expr |
3455 | of the so called length, and see if it's C interoperable. */ | |
3456 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3457 | |
6de9cd9a DN |
3458 | return MATCH_YES; |
3459 | } | |
3460 | ||
3461 | ||
f6288c24 FR |
3462 | /* Matches a RECORD declaration. */ |
3463 | ||
3464 | static match | |
e79e6763 | 3465 | match_record_decl (char *name) |
f6288c24 FR |
3466 | { |
3467 | locus old_loc; | |
3468 | old_loc = gfc_current_locus; | |
e79e6763 | 3469 | match m; |
f6288c24 | 3470 | |
e79e6763 FR |
3471 | m = gfc_match (" record /"); |
3472 | if (m == MATCH_YES) | |
f6288c24 | 3473 | { |
f6d17ecd | 3474 | if (!flag_dec_structure) |
f6288c24 FR |
3475 | { |
3476 | gfc_current_locus = old_loc; | |
3477 | gfc_error ("RECORD at %C is an extension, enable it with " | |
a3f9f006 | 3478 | "%<-fdec-structure%>"); |
f6288c24 FR |
3479 | return MATCH_ERROR; |
3480 | } | |
e79e6763 FR |
3481 | m = gfc_match (" %n/", name); |
3482 | if (m == MATCH_YES) | |
3483 | return MATCH_YES; | |
f6288c24 FR |
3484 | } |
3485 | ||
e79e6763 | 3486 | gfc_current_locus = old_loc; |
f6d17ecd | 3487 | if (flag_dec_structure |
e79e6763 FR |
3488 | && (gfc_match (" record% ") == MATCH_YES |
3489 | || gfc_match (" record%t") == MATCH_YES)) | |
3490 | gfc_error ("Structure name expected after RECORD at %C"); | |
3491 | if (m == MATCH_NO) | |
f6288c24 | 3492 | return MATCH_NO; |
e79e6763 FR |
3493 | |
3494 | return MATCH_ERROR; | |
f6288c24 FR |
3495 | } |
3496 | ||
5bab4c96 PT |
3497 | |
3498 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3499 | of expressions to substitute into the possibly parameterized expression | |
3500 | 'e'. Using a list is inefficient but should not be too bad since the | |
3501 | number of type parameters is not likely to be large. */ | |
3502 | static bool | |
3503 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3504 | int* f) | |
3505 | { | |
3506 | gfc_actual_arglist *param; | |
3507 | gfc_expr *copy; | |
3508 | ||
3509 | if (e->expr_type != EXPR_VARIABLE) | |
3510 | return false; | |
3511 | ||
3512 | gcc_assert (e->symtree); | |
3513 | if (e->symtree->n.sym->attr.pdt_kind | |
3514 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3515 | { | |
3516 | for (param = type_param_spec_list; param; param = param->next) | |
3517 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3518 | break; | |
3519 | ||
3520 | if (param) | |
3521 | { | |
3522 | copy = gfc_copy_expr (param->expr); | |
3523 | *e = *copy; | |
3524 | free (copy); | |
3525 | } | |
3526 | } | |
3527 | ||
3528 | return false; | |
3529 | } | |
3530 | ||
3531 | ||
3532 | bool | |
3533 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3534 | { | |
3535 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3536 | } | |
3537 | ||
3538 | ||
3539 | bool | |
3540 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3541 | { | |
3542 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3543 | type_param_spec_list = param_list; | |
3544 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3545 | type_param_spec_list = NULL; | |
3546 | type_param_spec_list = old_param_spec_list; | |
3547 | } | |
3548 | ||
3549 | /* Determines the instance of a parameterized derived type to be used by | |
3550 | matching determining the values of the kind parameters and using them | |
3551 | in the name of the instance. If the instance exists, it is used, otherwise | |
3552 | a new derived type is created. */ | |
3553 | match | |
3554 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3555 | gfc_actual_arglist **ext_param_list) | |
3556 | { | |
3557 | /* The PDT template symbol. */ | |
3558 | gfc_symbol *pdt = *sym; | |
3559 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3560 | gfc_symbol *param; | |
3561 | /* The hoped for instance of the PDT. */ | |
3562 | gfc_symbol *instance; | |
3563 | /* The list of parameters appearing in the PDT declaration. */ | |
3564 | gfc_formal_arglist *type_param_name_list; | |
3565 | /* Used to store the parameter specification list during recursive calls. */ | |
3566 | gfc_actual_arglist *old_param_spec_list; | |
3567 | /* Pointers to the parameter specification being used. */ | |
3568 | gfc_actual_arglist *actual_param; | |
3569 | gfc_actual_arglist *tail = NULL; | |
3570 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3571 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3572 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3573 | ||
3574 | bool name_seen = (param_list == NULL); | |
3575 | bool assumed_seen = false; | |
3576 | bool deferred_seen = false; | |
3577 | bool spec_error = false; | |
3578 | int kind_value, i; | |
3579 | gfc_expr *kind_expr; | |
3580 | gfc_component *c1, *c2; | |
3581 | match m; | |
3582 | ||
3583 | type_param_spec_list = NULL; | |
3584 | ||
3585 | type_param_name_list = pdt->formal; | |
3586 | actual_param = param_list; | |
3587 | sprintf (name, "Pdt%s", pdt->name); | |
3588 | ||
3589 | /* Run through the parameter name list and pick up the actual | |
3590 | parameter values or use the default values in the PDT declaration. */ | |
3591 | for (; type_param_name_list; | |
3592 | type_param_name_list = type_param_name_list->next) | |
3593 | { | |
3594 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3595 | { | |
3596 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3597 | spec_error = deferred_seen; | |
3598 | else | |
3599 | spec_error = assumed_seen; | |
3600 | ||
3601 | if (spec_error) | |
3602 | { | |
3603 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3604 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3605 | goto error_return; |
5bab4c96 PT |
3606 | } |
3607 | } | |
3608 | ||
3609 | if (actual_param && actual_param->name) | |
3610 | name_seen = true; | |
3611 | param = type_param_name_list->sym; | |
3612 | ||
276515e6 PT |
3613 | if (!param || !param->name) |
3614 | continue; | |
3615 | ||
18a4e7e3 | 3616 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3617 | /* An error should already have been thrown in resolve.c |
3618 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3619 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3620 | goto error_return; |
18a4e7e3 | 3621 | |
5bab4c96 PT |
3622 | kind_expr = NULL; |
3623 | if (!name_seen) | |
3624 | { | |
18a4e7e3 PT |
3625 | if (!actual_param && !(c1 && c1->initializer)) |
3626 | { | |
3627 | gfc_error ("The type parameter spec list at %C does not contain " | |
3628 | "enough parameter expressions"); | |
3629 | goto error_return; | |
3630 | } | |
3631 | else if (!actual_param && c1 && c1->initializer) | |
3632 | kind_expr = gfc_copy_expr (c1->initializer); | |
3633 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3634 | kind_expr = gfc_copy_expr (actual_param->expr); |
3635 | } | |
3636 | else | |
3637 | { | |
3638 | actual_param = param_list; | |
3639 | for (;actual_param; actual_param = actual_param->next) | |
3640 | if (actual_param->name | |
3641 | && strcmp (actual_param->name, param->name) == 0) | |
3642 | break; | |
3643 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3644 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3645 | else | |
3646 | { | |
62d3c075 PT |
3647 | if (c1->initializer) |
3648 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3649 | else if (!(actual_param && param->attr.pdt_len)) |
3650 | { | |
71a21b9e | 3651 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3652 | "have a default value", param->name); |
18a4e7e3 | 3653 | goto error_return; |
5bab4c96 PT |
3654 | } |
3655 | } | |
3656 | } | |
3657 | ||
3658 | /* Store the current parameter expressions in a temporary actual | |
3659 | arglist 'list' so that they can be substituted in the corresponding | |
3660 | expressions in the PDT instance. */ | |
3661 | if (type_param_spec_list == NULL) | |
3662 | { | |
3663 | type_param_spec_list = gfc_get_actual_arglist (); | |
3664 | tail = type_param_spec_list; | |
3665 | } | |
3666 | else | |
3667 | { | |
3668 | tail->next = gfc_get_actual_arglist (); | |
3669 | tail = tail->next; | |
3670 | } | |
3671 | tail->name = param->name; | |
3672 | ||
3673 | if (kind_expr) | |
3674 | { | |
87f3a5cf PT |
3675 | /* Try simplification even for LEN expressions. */ |
3676 | gfc_resolve_expr (kind_expr); | |
3677 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3678 | /* Variable expressions seem to default to BT_PROCEDURE. |
3679 | TODO find out why this is and fix it. */ | |
3680 | if (kind_expr->ts.type != BT_INTEGER | |
3681 | && kind_expr->ts.type != BT_PROCEDURE) | |
3682 | { | |
3683 | gfc_error ("The parameter expression at %C must be of " | |
3684 | "INTEGER type and not %s type", | |
3685 | gfc_basic_typename (kind_expr->ts.type)); | |
3686 | goto error_return; | |
3687 | } | |
3688 | ||
5bab4c96 | 3689 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3690 | } |
3691 | ||
3692 | if (actual_param) | |
3693 | tail->spec_type = actual_param->spec_type; | |
3694 | ||
3695 | if (!param->attr.pdt_kind) | |
3696 | { | |
18a4e7e3 | 3697 | if (!name_seen && actual_param) |
5bab4c96 PT |
3698 | actual_param = actual_param->next; |
3699 | if (kind_expr) | |
3700 | { | |
3701 | gfc_free_expr (kind_expr); | |
3702 | kind_expr = NULL; | |
3703 | } | |
3704 | continue; | |
3705 | } | |
3706 | ||
3707 | if (actual_param | |
3708 | && (actual_param->spec_type == SPEC_ASSUMED | |
3709 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3710 | { | |
71a21b9e | 3711 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3712 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3713 | goto error_return; |
5bab4c96 PT |
3714 | } |
3715 | ||
3716 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3717 | { | |
71a21b9e | 3718 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3719 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3720 | goto error_return; |
5bab4c96 PT |
3721 | } |
3722 | ||
3723 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3724 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3725 | |
3726 | if (!name_seen && actual_param) | |
3727 | actual_param = actual_param->next; | |
3728 | gfc_free_expr (kind_expr); | |
3729 | } | |
3730 | ||
18a4e7e3 PT |
3731 | if (!name_seen && actual_param) |
3732 | { | |
3733 | gfc_error ("The type parameter spec list at %C contains too many " | |
3734 | "parameter expressions"); | |
3735 | goto error_return; | |
3736 | } | |
3737 | ||
5bab4c96 PT |
3738 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3739 | build it, using 'pdt' as a template. */ | |
3740 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3741 | { | |
3742 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3743 | goto error_return; |
5bab4c96 PT |
3744 | } |
3745 | ||
3746 | m = MATCH_YES; | |
3747 | ||
3748 | if (instance->attr.flavor == FL_DERIVED | |
3749 | && instance->attr.pdt_type) | |
3750 | { | |
3751 | instance->refs++; | |
3752 | if (ext_param_list) | |
3753 | *ext_param_list = type_param_spec_list; | |
3754 | *sym = instance; | |
3755 | gfc_commit_symbols (); | |
3756 | return m; | |
3757 | } | |
3758 | ||
3759 | /* Start building the new instance of the parameterized type. */ | |
3760 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3761 | instance->attr.pdt_template = 0; | |
3762 | instance->attr.pdt_type = 1; | |
3763 | instance->declared_at = gfc_current_locus; | |
3764 | ||
3765 | /* Add the components, replacing the parameters in all expressions | |
3766 | with the expressions for their values in 'type_param_spec_list'. */ | |
3767 | c1 = pdt->components; | |
3768 | tail = type_param_spec_list; | |
3769 | for (; c1; c1 = c1->next) | |
3770 | { | |
3771 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3772 | |
5bab4c96 PT |
3773 | c2->ts = c1->ts; |
3774 | c2->attr = c1->attr; | |
3775 | ||
276515e6 PT |
3776 | /* The order of declaration of the type_specs might not be the |
3777 | same as that of the components. */ | |
3778 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3779 | { | |
3780 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3781 | if (strcmp (c1->name, tail->name) == 0) | |
3782 | break; | |
3783 | } | |
3784 | ||
5bab4c96 PT |
3785 | /* Deal with type extension by recursively calling this function |
3786 | to obtain the instance of the extended type. */ | |
3787 | if (gfc_current_state () != COMP_DERIVED | |
3788 | && c1 == pdt->components | |
3789 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3790 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3791 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3792 | { | |
3793 | gfc_formal_arglist *f; | |
3794 | ||
3795 | old_param_spec_list = type_param_spec_list; | |
3796 | ||
3797 | /* Obtain a spec list appropriate to the extended type..*/ | |
3798 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3799 | type_param_spec_list = actual_param; | |
3800 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3801 | actual_param = actual_param->next; | |
3802 | if (actual_param) | |
3803 | { | |
3804 | gfc_free_actual_arglist (actual_param->next); | |
3805 | actual_param->next = NULL; | |
3806 | } | |
3807 | ||
3808 | /* Now obtain the PDT instance for the extended type. */ | |
3809 | c2->param_list = type_param_spec_list; | |
3810 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3811 | NULL); | |
3812 | type_param_spec_list = old_param_spec_list; | |
3813 | ||
3814 | c2->ts.u.derived->refs++; | |
3815 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3816 | ||
3817 | /* Set extension level. */ | |
3818 | if (c2->ts.u.derived->attr.extension == 255) | |
3819 | { | |
3820 | /* Since the extension field is 8 bit wide, we can only have | |
3821 | up to 255 extension levels. */ | |
3822 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3823 | c2->ts.u.derived->name, | |
3824 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3825 | goto error_return; |
5bab4c96 PT |
3826 | } |
3827 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3828 | ||
5bab4c96 PT |
3829 | continue; |
3830 | } | |
3831 | ||
3832 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3833 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3834 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3835 | { |
3836 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3837 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3838 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3839 | gfc_extract_int (e, &c2->ts.kind); |
3840 | gfc_free_expr (e); | |
18a4e7e3 PT |
3841 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3842 | { | |
3843 | gfc_error ("Kind %d not supported for type %s at %C", | |
3844 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3845 | goto error_return; | |
3846 | } | |
5bab4c96 PT |
3847 | } |
3848 | ||
3849 | /* Similarly, set the string length if parameterized. */ | |
3850 | if (c1->ts.type == BT_CHARACTER | |
3851 | && c1->ts.u.cl->length | |
3852 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3853 | { | |
3854 | gfc_expr *e; | |
3855 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3856 | gfc_insert_kind_parameter_exprs (e); | |
3857 | gfc_simplify_expr (e, 1); | |
3858 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3859 | c2->ts.u.cl->length = e; | |
3860 | c2->attr.pdt_string = 1; | |
3861 | } | |
3862 | ||
3863 | /* Set up either the KIND/LEN initializer, if constant, | |
3864 | or the parameterized expression. Use the template | |
3865 | initializer if one is not already set in this instance. */ | |
3866 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3867 | { | |
3868 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3869 | c2->initializer = gfc_copy_expr (tail->expr); | |
3870 | else if (tail && tail->expr) | |
3871 | { | |
3872 | c2->param_list = gfc_get_actual_arglist (); | |
3873 | c2->param_list->name = tail->name; | |
3874 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3875 | c2->param_list->next = NULL; | |
3876 | } | |
3877 | ||
3878 | if (!c2->initializer && c1->initializer) | |
3879 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3880 | } |
3881 | ||
3882 | /* Copy the array spec. */ | |
3883 | c2->as = gfc_copy_array_spec (c1->as); | |
3884 | if (c1->ts.type == BT_CLASS) | |
3885 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3886 | ||
3887 | /* Determine if an array spec is parameterized. If so, substitute | |
3888 | in the parameter expressions for the bounds and set the pdt_array | |
3889 | attribute. Notice that this attribute must be unconditionally set | |
3890 | if this is an array of parameterized character length. */ | |
3891 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3892 | { | |
3893 | bool pdt_array = false; | |
3894 | ||
3895 | /* Are the bounds of the array parameterized? */ | |
3896 | for (i = 0; i < c1->as->rank; i++) | |
3897 | { | |
3898 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3899 | pdt_array = true; | |
3900 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3901 | pdt_array = true; | |
3902 | } | |
3903 | ||
3904 | /* If they are, free the expressions for the bounds and | |
3905 | replace them with the template expressions with substitute | |
3906 | values. */ | |
3907 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3908 | { | |
3909 | gfc_expr *e; | |
3910 | e = gfc_copy_expr (c1->as->lower[i]); | |
3911 | gfc_insert_kind_parameter_exprs (e); | |
3912 | gfc_simplify_expr (e, 1); | |
3913 | gfc_free_expr (c2->as->lower[i]); | |
3914 | c2->as->lower[i] = e; | |
3915 | e = gfc_copy_expr (c1->as->upper[i]); | |
3916 | gfc_insert_kind_parameter_exprs (e); | |
3917 | gfc_simplify_expr (e, 1); | |
3918 | gfc_free_expr (c2->as->upper[i]); | |
3919 | c2->as->upper[i] = e; | |
3920 | } | |
3921 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3922 | if (c1->initializer) |
3923 | { | |
3924 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3925 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3926 | gfc_simplify_expr (c2->initializer, 1); | |
3927 | } | |
5bab4c96 PT |
3928 | } |
3929 | ||
3930 | /* Recurse into this function for PDT components. */ | |
3931 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3932 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3933 | { | |
3934 | gfc_actual_arglist *params; | |
3935 | /* The component in the template has a list of specification | |
3936 | expressions derived from its declaration. */ | |
3937 | params = gfc_copy_actual_arglist (c1->param_list); | |
3938 | actual_param = params; | |
3939 | /* Substitute the template parameters with the expressions | |
3940 | from the specification list. */ | |
3941 | for (;actual_param; actual_param = actual_param->next) | |
3942 | gfc_insert_parameter_exprs (actual_param->expr, | |
3943 | type_param_spec_list); | |
3944 | ||
3945 | /* Now obtain the PDT instance for the component. */ | |
3946 | old_param_spec_list = type_param_spec_list; | |
3947 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3948 | type_param_spec_list = old_param_spec_list; | |
3949 | ||
3950 | c2->param_list = params; | |
2fcd5884 PT |
3951 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3952 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3953 | ||
3954 | if (c2->attr.allocatable) | |
3955 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3956 | } |
3957 | } | |
3958 | ||
3959 | gfc_commit_symbol (instance); | |
3960 | if (ext_param_list) | |
3961 | *ext_param_list = type_param_spec_list; | |
3962 | *sym = instance; | |
3963 | return m; | |
18a4e7e3 PT |
3964 | |
3965 | error_return: | |
3966 | gfc_free_actual_arglist (type_param_spec_list); | |
3967 | return MATCH_ERROR; | |
5bab4c96 PT |
3968 | } |
3969 | ||
3970 | ||
e74f1cc8 JW |
3971 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3972 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3973 | IMPLICIT statements. |
3974 | ||
d51347f9 | 3975 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3976 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3977 | statement correctly. */ |
3978 | ||
e2d29968 | 3979 | match |
e74f1cc8 | 3980 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3981 | { |
3982 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3983 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3984 | match m; |
8fc541d3 | 3985 | char c; |
0fb56814 | 3986 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3987 | const char *dt_name; |
6de9cd9a | 3988 | |
5bab4c96 PT |
3989 | decl_type_param_list = NULL; |
3990 | ||
1c8bcdf7 PT |
3991 | /* A belt and braces check that the typespec is correctly being treated |
3992 | as a deferred characteristic association. */ | |
3993 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
3994 | && (gfc_current_block ()->result->ts.kind == -1) |
3995 | && (ts->kind == -1); | |
6de9cd9a | 3996 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
3997 | if (seen_deferred_kind) |
3998 | ts->kind = -1; | |
6de9cd9a | 3999 | |
a8b3b0b6 | 4000 | /* Clear the current binding label, in case one is given. */ |
62603fae | 4001 | curr_binding_label = NULL; |
a8b3b0b6 | 4002 | |
5f700e6d AL |
4003 | if (gfc_match (" byte") == MATCH_YES) |
4004 | { | |
524af0d6 | 4005 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
4006 | return MATCH_ERROR; |
4007 | ||
4008 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
4009 | { | |
4010 | gfc_error ("BYTE type used at %C " | |
4011 | "is not available on the target machine"); | |
4012 | return MATCH_ERROR; | |
4013 | } | |
d51347f9 | 4014 | |
5f700e6d AL |
4015 | ts->type = BT_INTEGER; |
4016 | ts->kind = 1; | |
4017 | return MATCH_YES; | |
4018 | } | |
4019 | ||
0fb56814 | 4020 | |
45a69325 | 4021 | m = gfc_match (" type ("); |
0fb56814 | 4022 | matched_type = (m == MATCH_YES); |
45a69325 TB |
4023 | if (matched_type) |
4024 | { | |
4025 | gfc_gobble_whitespace (); | |
4026 | if (gfc_peek_ascii_char () == '*') | |
4027 | { | |
4028 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
4029 | return m; | |
f6288c24 | 4030 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
4031 | { |
4032 | gfc_error ("Assumed type at %C is not allowed for components"); | |
4033 | return MATCH_ERROR; | |
4034 | } | |
286f737c | 4035 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
45a69325 TB |
4036 | return MATCH_ERROR; |
4037 | ts->type = BT_ASSUMED; | |
4038 | return MATCH_YES; | |
4039 | } | |
4040 | ||
4041 | m = gfc_match ("%n", name); | |
4042 | matched_type = (m == MATCH_YES); | |
4043 | } | |
4044 | ||
0fb56814 TB |
4045 | if ((matched_type && strcmp ("integer", name) == 0) |
4046 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
4047 | { |
4048 | ts->type = BT_INTEGER; | |
9d64df18 | 4049 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
4050 | goto get_kind; |
4051 | } | |
4052 | ||
0fb56814 TB |
4053 | if ((matched_type && strcmp ("character", name) == 0) |
4054 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 4055 | { |
0fb56814 | 4056 | if (matched_type |
524af0d6 JB |
4057 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4058 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4059 | return MATCH_ERROR; |
4060 | ||
6de9cd9a | 4061 | ts->type = BT_CHARACTER; |
e5ddaa24 | 4062 | if (implicit_flag == 0) |
0fb56814 | 4063 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 4064 | else |
0fb56814 TB |
4065 | m = MATCH_YES; |
4066 | ||
4067 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
4068 | m = MATCH_ERROR; | |
4069 | ||
4070 | return m; | |
6de9cd9a DN |
4071 | } |
4072 | ||
0fb56814 TB |
4073 | if ((matched_type && strcmp ("real", name) == 0) |
4074 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
4075 | { |
4076 | ts->type = BT_REAL; | |
9d64df18 | 4077 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
4078 | goto get_kind; |
4079 | } | |
4080 | ||
0fb56814 TB |
4081 | if ((matched_type |
4082 | && (strcmp ("doubleprecision", name) == 0 | |
4083 | || (strcmp ("double", name) == 0 | |
4084 | && gfc_match (" precision") == MATCH_YES))) | |
4085 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 4086 | { |
0fb56814 | 4087 | if (matched_type |
524af0d6 JB |
4088 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4089 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4090 | return MATCH_ERROR; |
4091 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4092 | return MATCH_ERROR; | |
4093 | ||
6de9cd9a | 4094 | ts->type = BT_REAL; |
9d64df18 | 4095 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4096 | return MATCH_YES; |
4097 | } | |
4098 | ||
0fb56814 TB |
4099 | if ((matched_type && strcmp ("complex", name) == 0) |
4100 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
4101 | { |
4102 | ts->type = BT_COMPLEX; | |
9d64df18 | 4103 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
4104 | goto get_kind; |
4105 | } | |
4106 | ||
0fb56814 TB |
4107 | if ((matched_type |
4108 | && (strcmp ("doublecomplex", name) == 0 | |
4109 | || (strcmp ("double", name) == 0 | |
4110 | && gfc_match (" complex") == MATCH_YES))) | |
4111 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 4112 | { |
524af0d6 | 4113 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
4114 | return MATCH_ERROR; |
4115 | ||
4116 | if (matched_type | |
524af0d6 JB |
4117 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4118 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4119 | return MATCH_ERROR; |
4120 | ||
4121 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
4122 | return MATCH_ERROR; |
4123 | ||
6de9cd9a | 4124 | ts->type = BT_COMPLEX; |
9d64df18 | 4125 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
4126 | return MATCH_YES; |
4127 | } | |
4128 | ||
0fb56814 TB |
4129 | if ((matched_type && strcmp ("logical", name) == 0) |
4130 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
4131 | { |
4132 | ts->type = BT_LOGICAL; | |
9d64df18 | 4133 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
4134 | goto get_kind; |
4135 | } | |
4136 | ||
0fb56814 | 4137 | if (matched_type) |
5bab4c96 PT |
4138 | { |
4139 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4140 | if (m == MATCH_ERROR) | |
4141 | return m; | |
4142 | ||
0fb56814 | 4143 | m = gfc_match_char (')'); |
5bab4c96 | 4144 | } |
0fb56814 | 4145 | |
f6288c24 FR |
4146 | if (m != MATCH_YES) |
4147 | m = match_record_decl (name); | |
4148 | ||
4149 | if (matched_type || m == MATCH_YES) | |
4150 | { | |
4151 | ts->type = BT_DERIVED; | |
4152 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4153 | * don't need all the extra derived-type stuff for structures. */ | |
4154 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4155 | { | |
2f029c08 | 4156 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
4157 | return MATCH_ERROR; |
4158 | } | |
5bab4c96 PT |
4159 | |
4160 | if (sym && sym->attr.flavor == FL_DERIVED | |
4161 | && sym->attr.pdt_template | |
4162 | && gfc_current_state () != COMP_DERIVED) | |
4163 | { | |
4164 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4165 | if (m != MATCH_YES) | |
4166 | return m; | |
4167 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4168 | ts->u.derived = sym; | |
4169 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4170 | } | |
4171 | ||
f6288c24 FR |
4172 | if (sym && sym->attr.flavor == FL_STRUCT) |
4173 | { | |
4174 | ts->u.derived = sym; | |
4175 | return MATCH_YES; | |
4176 | } | |
4177 | /* Actually a derived type. */ | |
4178 | } | |
4179 | ||
cf2b3c22 | 4180 | else |
727e8544 | 4181 | { |
f6288c24 | 4182 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 4183 | structure declaration. */ |
f6d17ecd | 4184 | if (flag_dec_structure |
e79e6763 FR |
4185 | && (gfc_current_state () == COMP_STRUCTURE |
4186 | || gfc_current_state () == COMP_MAP)) | |
4187 | { | |
4188 | m = gfc_match (" structure"); | |
4189 | if (m == MATCH_YES) | |
4190 | { | |
4191 | m = gfc_match_structure_decl (); | |
4192 | if (m == MATCH_YES) | |
4193 | { | |
4194 | /* gfc_new_block is updated by match_structure_decl. */ | |
4195 | ts->type = BT_DERIVED; | |
4196 | ts->u.derived = gfc_new_block; | |
4197 | return MATCH_YES; | |
4198 | } | |
4199 | } | |
4200 | if (m == MATCH_ERROR) | |
4201 | return MATCH_ERROR; | |
4202 | } | |
f6288c24 | 4203 | |
528622fd JW |
4204 | /* Match CLASS declarations. */ |
4205 | m = gfc_match (" class ( * )"); | |
4206 | if (m == MATCH_ERROR) | |
4207 | return MATCH_ERROR; | |
4208 | else if (m == MATCH_YES) | |
4209 | { | |
8b704316 PT |
4210 | gfc_symbol *upe; |
4211 | gfc_symtree *st; | |
4212 | ts->type = BT_CLASS; | |
f5acf0f2 | 4213 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
4214 | if (upe == NULL) |
4215 | { | |
f5acf0f2 PT |
4216 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4217 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
4218 | st->n.sym = upe; |
4219 | gfc_set_sym_referenced (upe); | |
4220 | upe->refs++; | |
4221 | upe->ts.type = BT_VOID; | |
4222 | upe->attr.unlimited_polymorphic = 1; | |
4223 | /* This is essential to force the construction of | |
4224 | unlimited polymorphic component class containers. */ | |
4225 | upe->attr.zero_comp = 1; | |
70112e2a | 4226 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 4227 | &gfc_current_locus)) |
b93d8a3f JW |
4228 | return MATCH_ERROR; |
4229 | } | |
8b704316 PT |
4230 | else |
4231 | { | |
b93d8a3f | 4232 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
4233 | st->n.sym = upe; |
4234 | upe->refs++; | |
4235 | } | |
4236 | ts->u.derived = upe; | |
4237 | return m; | |
4238 | } | |
528622fd | 4239 | |
5bab4c96 PT |
4240 | m = gfc_match (" class ("); |
4241 | ||
4242 | if (m == MATCH_YES) | |
4243 | m = gfc_match ("%n", name); | |
4244 | else | |
4245 | return m; | |
4246 | ||
727e8544 JW |
4247 | if (m != MATCH_YES) |
4248 | return m; | |
cf2b3c22 | 4249 | ts->type = BT_CLASS; |
727e8544 | 4250 | |
524af0d6 | 4251 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 4252 | return MATCH_ERROR; |
5bab4c96 PT |
4253 | |
4254 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4255 | if (m == MATCH_ERROR) | |
4256 | return m; | |
4257 | ||
4258 | m = gfc_match_char (')'); | |
4259 | if (m != MATCH_YES) | |
4260 | return m; | |
727e8544 | 4261 | } |
6de9cd9a | 4262 | |
1c8bcdf7 PT |
4263 | /* Defer association of the derived type until the end of the |
4264 | specification block. However, if the derived type can be | |
f5acf0f2 | 4265 | found, add it to the typespec. */ |
1c8bcdf7 | 4266 | if (gfc_matching_function) |
e2d29968 | 4267 | { |
bc21d315 | 4268 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4269 | if (gfc_current_state () != COMP_INTERFACE |
4270 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4271 | { |
4272 | sym = gfc_find_dt_in_generic (sym); | |
4273 | ts->u.derived = sym; | |
4274 | } | |
e2d29968 PT |
4275 | return MATCH_YES; |
4276 | } | |
4277 | ||
4278 | /* Search for the name but allow the components to be defined later. If | |
4279 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4280 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4281 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4282 | symtree with the all lower-case name contains the associated |
4283 | generic function. */ | |
f6288c24 | 4284 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4285 | sym = NULL; |
c3f34952 TB |
4286 | dt_sym = NULL; |
4287 | if (ts->kind != -1) | |
6de9cd9a | 4288 | { |
c3f34952 TB |
4289 | gfc_get_ha_symbol (name, &sym); |
4290 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4291 | { | |
c4100eae | 4292 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4293 | return MATCH_ERROR; |
4294 | } | |
4295 | if (sym->generic && !dt_sym) | |
4296 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4297 | |
4298 | /* Host associated PDTs can get confused with their constructors | |
4299 | because they ar instantiated in the template's namespace. */ | |
4300 | if (!dt_sym) | |
4301 | { | |
4302 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4303 | { | |
4304 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4305 | return MATCH_ERROR; | |
4306 | } | |
4307 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4308 | dt_sym = NULL; | |
4309 | } | |
6de9cd9a | 4310 | } |
e2d29968 PT |
4311 | else if (ts->kind == -1) |
4312 | { | |
1c8bcdf7 PT |
4313 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4314 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4315 | gfc_find_symbol (name, NULL, iface, &sym); |
4316 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4317 | { |
c4100eae | 4318 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4319 | return MATCH_ERROR; |
4320 | } | |
c3f34952 TB |
4321 | if (sym && sym->generic && !dt_sym) |
4322 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4323 | |
1c8bcdf7 | 4324 | ts->kind = 0; |
e2d29968 PT |
4325 | if (sym == NULL) |
4326 | return MATCH_NO; | |
4327 | } | |
6de9cd9a | 4328 | |
f6288c24 | 4329 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4330 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4331 | || sym->attr.subroutine) | |
4332 | { | |
fea70c99 MLI |
4333 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4334 | "entity at %L, which has the same name", name, | |
4335 | &sym->declared_at); | |
c3f34952 TB |
4336 | return MATCH_ERROR; |
4337 | } | |
6de9cd9a | 4338 | |
5bab4c96 PT |
4339 | if (sym && sym->attr.flavor == FL_DERIVED |
4340 | && sym->attr.pdt_template | |
4341 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4342 | { |
4343 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4344 | if (m != MATCH_YES) | |
4345 | return m; | |
4346 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4347 | ts->u.derived = sym; | |
4348 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4349 | } | |
5bab4c96 | 4350 | |
44c57c2f | 4351 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4352 | gfc_set_sym_referenced (sym); |
c3f34952 | 4353 | if (!sym->attr.generic |
524af0d6 | 4354 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4355 | return MATCH_ERROR; |
4356 | ||
4357 | if (!sym->attr.function | |
524af0d6 | 4358 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4359 | return MATCH_ERROR; |
4360 | ||
5bab4c96 PT |
4361 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4362 | && dt_sym->attr.pdt_template | |
4363 | && gfc_current_state () != COMP_DERIVED) | |
4364 | { | |
4365 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4366 | if (m != MATCH_YES) | |
4367 | return m; | |
4368 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4369 | } | |
4370 | ||
c3f34952 TB |
4371 | if (!dt_sym) |
4372 | { | |
4373 | gfc_interface *intr, *head; | |
4374 | ||
4375 | /* Use upper case to save the actual derived-type symbol. */ | |
4376 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4377 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4378 | head = sym->generic; |
4379 | intr = gfc_get_interface (); | |
4380 | intr->sym = dt_sym; | |
4381 | intr->where = gfc_current_locus; | |
4382 | intr->next = head; | |
4383 | sym->generic = intr; | |
4384 | sym->attr.if_source = IFSRC_DECL; | |
4385 | } | |
44c57c2f MM |
4386 | else |
4387 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4388 | |
4389 | gfc_set_sym_referenced (dt_sym); | |
4390 | ||
f6288c24 | 4391 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4392 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4393 | return MATCH_ERROR; |
4394 | ||
4395 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4396 | |
4397 | return MATCH_YES; | |
4398 | ||
4399 | get_kind: | |
0fb56814 | 4400 | if (matched_type |
524af0d6 JB |
4401 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4402 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4403 | return MATCH_ERROR; |
4404 | ||
6de9cd9a DN |
4405 | /* For all types except double, derived and character, look for an |
4406 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4407 | if (implicit_flag == 1) |
0fb56814 TB |
4408 | { |
4409 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4410 | return MATCH_ERROR; | |
4411 | ||
4412 | return MATCH_YES; | |
4413 | } | |
6de9cd9a | 4414 | |
0ff0dfbf TS |
4415 | if (gfc_current_form == FORM_FREE) |
4416 | { | |
0b3624f6 SK |
4417 | c = gfc_peek_ascii_char (); |
4418 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4419 | && c != ':' && c != ',') |
0fb56814 TB |
4420 | { |
4421 | if (matched_type && c == ')') | |
4422 | { | |
4423 | gfc_next_ascii_char (); | |
4424 | return MATCH_YES; | |
4425 | } | |
4426 | return MATCH_NO; | |
4427 | } | |
0ff0dfbf TS |
4428 | } |
4429 | ||
e2d29968 | 4430 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4431 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4432 | { |
4433 | m = gfc_match_old_kind_spec (ts); | |
4434 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4435 | return MATCH_ERROR; | |
4436 | } | |
6de9cd9a | 4437 | |
0fb56814 TB |
4438 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4439 | return MATCH_ERROR; | |
4440 | ||
1c8bcdf7 PT |
4441 | /* Defer association of the KIND expression of function results |
4442 | until after USE and IMPORT statements. */ | |
4443 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4444 | || gfc_matching_function) | |
4445 | return MATCH_YES; | |
4446 | ||
6de9cd9a DN |
4447 | if (m == MATCH_NO) |
4448 | m = MATCH_YES; /* No kind specifier found. */ | |
4449 | ||
4450 | return m; | |
4451 | } | |
4452 | ||
4453 | ||
e5ddaa24 TS |
4454 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4455 | already matched in parse.c, or we would not end up here in the | |
4456 | first place. So the only thing we need to check, is if there is | |
4457 | trailing garbage. If not, the match is successful. */ | |
4458 | ||
4459 | match | |
4460 | gfc_match_implicit_none (void) | |
4461 | { | |
8b7a967e TB |
4462 | char c; |
4463 | match m; | |
4464 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4465 | bool type = false; | |
4466 | bool external = false; | |
a6c63173 TB |
4467 | locus cur_loc = gfc_current_locus; |
4468 | ||
4469 | if (gfc_current_ns->seen_implicit_none | |
4470 | || gfc_current_ns->has_implicit_none_export) | |
4471 | { | |
4472 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4473 | return MATCH_ERROR; | |
4474 | } | |
8b7a967e TB |
4475 | |
4476 | gfc_gobble_whitespace (); | |
4477 | c = gfc_peek_ascii_char (); | |
4478 | if (c == '(') | |
4479 | { | |
4480 | (void) gfc_next_ascii_char (); | |
8179b067 | 4481 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4482 | return MATCH_ERROR; |
a6c63173 TB |
4483 | |
4484 | gfc_gobble_whitespace (); | |
4485 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4486 | { |
a6c63173 TB |
4487 | (void) gfc_next_ascii_char (); |
4488 | type = true; | |
4489 | } | |
4490 | else | |
4491 | for(;;) | |
4492 | { | |
4493 | m = gfc_match (" %n", name); | |
4494 | if (m != MATCH_YES) | |
4495 | return MATCH_ERROR; | |
8b7a967e | 4496 | |
a6c63173 TB |
4497 | if (strcmp (name, "type") == 0) |
4498 | type = true; | |
4499 | else if (strcmp (name, "external") == 0) | |
4500 | external = true; | |
4501 | else | |
4502 | return MATCH_ERROR; | |
8b7a967e | 4503 | |
a6c63173 TB |
4504 | gfc_gobble_whitespace (); |
4505 | c = gfc_next_ascii_char (); | |
4506 | if (c == ',') | |
4507 | continue; | |
4508 | if (c == ')') | |
4509 | break; | |
4510 | return MATCH_ERROR; | |
4511 | } | |
8b7a967e TB |
4512 | } |
4513 | else | |
4514 | type = true; | |
4515 | ||
4516 | if (gfc_match_eos () != MATCH_YES) | |
4517 | return MATCH_ERROR; | |
4518 | ||
a6c63173 | 4519 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4520 | |
4521 | return MATCH_YES; | |
e5ddaa24 TS |
4522 | } |
4523 | ||
4524 | ||
4525 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4526 | ||
4527 | static match | |
1107b970 | 4528 | match_implicit_range (void) |
e5ddaa24 | 4529 | { |
8fc541d3 FXC |
4530 | char c, c1, c2; |
4531 | int inner; | |
e5ddaa24 TS |
4532 | locus cur_loc; |
4533 | ||
4534 | cur_loc = gfc_current_locus; | |
4535 | ||
4536 | gfc_gobble_whitespace (); | |
8fc541d3 | 4537 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4538 | if (c != '(') |
4539 | { | |
4540 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4541 | goto bad; | |
4542 | } | |
4543 | ||
4544 | inner = 1; | |
4545 | while (inner) | |
4546 | { | |
4547 | gfc_gobble_whitespace (); | |
8fc541d3 | 4548 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4549 | if (!ISALPHA (c1)) |
4550 | goto bad; | |
4551 | ||
4552 | gfc_gobble_whitespace (); | |
8fc541d3 | 4553 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4554 | |
4555 | switch (c) | |
4556 | { | |
4557 | case ')': | |
66e4ab31 | 4558 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4559 | |
4560 | case ',': | |
4561 | c2 = c1; | |
4562 | break; | |
4563 | ||
4564 | case '-': | |
4565 | gfc_gobble_whitespace (); | |
8fc541d3 | 4566 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4567 | if (!ISALPHA (c2)) |
4568 | goto bad; | |
4569 | ||
4570 | gfc_gobble_whitespace (); | |
8fc541d3 | 4571 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4572 | |
4573 | if ((c != ',') && (c != ')')) | |
4574 | goto bad; | |
4575 | if (c == ')') | |
4576 | inner = 0; | |
4577 | ||
4578 | break; | |
4579 | ||
4580 | default: | |
4581 | goto bad; | |
4582 | } | |
4583 | ||
4584 | if (c1 > c2) | |
4585 | { | |
4586 | gfc_error ("Letters must be in alphabetic order in " | |
4587 | "IMPLICIT statement at %C"); | |
4588 | goto bad; | |
4589 | } | |
4590 | ||
4591 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4592 | implicits from this IMPLICIT statement. We do not check for |
4593 | conflicts with whatever earlier IMPLICIT statements may have | |
4594 | set. This is done when we've successfully finished matching | |
4595 | the current one. */ | |
524af0d6 | 4596 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4597 | goto bad; |
4598 | } | |
4599 | ||
4600 | return MATCH_YES; | |
4601 | ||
4602 | bad: | |
4603 | gfc_syntax_error (ST_IMPLICIT); | |
4604 | ||
4605 | gfc_current_locus = cur_loc; | |
4606 | return MATCH_ERROR; | |
4607 | } | |
4608 | ||
4609 | ||
4610 | /* Match an IMPLICIT statement, storing the types for | |
4611 | gfc_set_implicit() if the statement is accepted by the parser. | |
4612 | There is a strange looking, but legal syntactic construction | |
4613 | possible. It looks like: | |
4614 | ||
4615 | IMPLICIT INTEGER (a-b) (c-d) | |
4616 | ||
4617 | This is legal if "a-b" is a constant expression that happens to | |
4618 | equal one of the legal kinds for integers. The real problem | |
4619 | happens with an implicit specification that looks like: | |
4620 | ||
4621 | IMPLICIT INTEGER (a-b) | |
4622 | ||
4623 | In this case, a typespec matcher that is "greedy" (as most of the | |
4624 | matchers are) gobbles the character range as a kindspec, leaving | |
4625 | nothing left. We therefore have to go a bit more slowly in the | |
4626 | matching process by inhibiting the kindspec checking during | |
4627 | typespec matching and checking for a kind later. */ | |
4628 | ||
4629 | match | |
4630 | gfc_match_implicit (void) | |
4631 | { | |
4632 | gfc_typespec ts; | |
4633 | locus cur_loc; | |
8fc541d3 | 4634 | char c; |
e5ddaa24 TS |
4635 | match m; |
4636 | ||
8b7a967e TB |
4637 | if (gfc_current_ns->seen_implicit_none) |
4638 | { | |
4639 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4640 | "statement"); | |
4641 | return MATCH_ERROR; | |
4642 | } | |
4643 | ||
44000dbb JD |
4644 | gfc_clear_ts (&ts); |
4645 | ||
e5ddaa24 TS |
4646 | /* We don't allow empty implicit statements. */ |
4647 | if (gfc_match_eos () == MATCH_YES) | |
4648 | { | |
4649 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4650 | return MATCH_ERROR; | |
4651 | } | |
4652 | ||
e5ddaa24 TS |
4653 | do |
4654 | { | |
1107b970 PB |
4655 | /* First cleanup. */ |
4656 | gfc_clear_new_implicit (); | |
4657 | ||
e5ddaa24 | 4658 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4659 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4660 | if (m == MATCH_ERROR) |
4661 | goto error; | |
4662 | if (m == MATCH_NO) | |
4663 | goto syntax; | |
4664 | ||
4665 | cur_loc = gfc_current_locus; | |
1107b970 | 4666 | m = match_implicit_range (); |
e5ddaa24 TS |
4667 | |
4668 | if (m == MATCH_YES) | |
4669 | { | |
1107b970 | 4670 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4671 | gfc_gobble_whitespace (); |
a6c63173 TB |
4672 | c = gfc_peek_ascii_char (); |
4673 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4674 | { |
4675 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4676 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4677 | { |
9d64df18 | 4678 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4679 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4680 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4681 | NULL, 1); |
1107b970 PB |
4682 | } |
4683 | ||
4684 | /* Record the Successful match. */ | |
524af0d6 | 4685 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4686 | return MATCH_ERROR; |
a6c63173 TB |
4687 | if (c == ',') |
4688 | c = gfc_next_ascii_char (); | |
4689 | else if (gfc_match_eos () == MATCH_ERROR) | |
4690 | goto error; | |
1107b970 PB |
4691 | continue; |
4692 | } | |
e5ddaa24 TS |
4693 | |
4694 | gfc_current_locus = cur_loc; | |
4695 | } | |
4696 | ||
1107b970 PB |
4697 | /* Discard the (incorrectly) matched range. */ |
4698 | gfc_clear_new_implicit (); | |
4699 | ||
4700 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4701 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4702 | m = gfc_match_char_spec (&ts); |
1107b970 | 4703 | else |
e5ddaa24 | 4704 | { |
e2d29968 | 4705 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4706 | if (m == MATCH_NO) |
1107b970 PB |
4707 | { |
4708 | m = gfc_match_old_kind_spec (&ts); | |
4709 | if (m == MATCH_ERROR) | |
4710 | goto error; | |
4711 | if (m == MATCH_NO) | |
4712 | goto syntax; | |
4713 | } | |
e5ddaa24 | 4714 | } |
1107b970 PB |
4715 | if (m == MATCH_ERROR) |
4716 | goto error; | |
e5ddaa24 | 4717 | |
1107b970 | 4718 | m = match_implicit_range (); |
e5ddaa24 TS |
4719 | if (m == MATCH_ERROR) |
4720 | goto error; | |
4721 | if (m == MATCH_NO) | |
4722 | goto syntax; | |
4723 | ||
4724 | gfc_gobble_whitespace (); | |
8fc541d3 | 4725 | c = gfc_next_ascii_char (); |
a6c63173 | 4726 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4727 | goto syntax; |
4728 | ||
524af0d6 | 4729 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4730 | return MATCH_ERROR; |
e5ddaa24 TS |
4731 | } |
4732 | while (c == ','); | |
4733 | ||
1107b970 | 4734 | return MATCH_YES; |
e5ddaa24 TS |
4735 | |
4736 | syntax: | |
4737 | gfc_syntax_error (ST_IMPLICIT); | |
4738 | ||
4739 | error: | |
4740 | return MATCH_ERROR; | |
4741 | } | |
4742 | ||
66e4ab31 | 4743 | |
8998be20 TB |
4744 | match |
4745 | gfc_match_import (void) | |
4746 | { | |
4747 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4748 | match m; | |
4749 | gfc_symbol *sym; | |
4750 | gfc_symtree *st; | |
4751 | ||
66e4ab31 SK |
4752 | if (gfc_current_ns->proc_name == NULL |
4753 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4754 | { |
4755 | gfc_error ("IMPORT statement at %C only permitted in " | |
4756 | "an INTERFACE body"); | |
4757 | return MATCH_ERROR; | |
4758 | } | |
4759 | ||
4668d6f9 PT |
4760 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4761 | { | |
4762 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4763 | "in a module procedure interface body"); | |
4764 | return MATCH_ERROR; | |
4765 | } | |
4766 | ||
524af0d6 | 4767 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4768 | return MATCH_ERROR; |
4769 | ||
4770 | if (gfc_match_eos () == MATCH_YES) | |
4771 | { | |
4772 | /* All host variables should be imported. */ | |
4773 | gfc_current_ns->has_import_set = 1; | |
4774 | return MATCH_YES; | |
4775 | } | |
4776 | ||
4777 | if (gfc_match (" ::") == MATCH_YES) | |
4778 | { | |
4779 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4780 | { |
4781 | gfc_error ("Expecting list of named entities at %C"); | |
4782 | return MATCH_ERROR; | |
4783 | } | |
8998be20 TB |
4784 | } |
4785 | ||
4786 | for(;;) | |
4787 | { | |
2e8d9212 | 4788 | sym = NULL; |
8998be20 TB |
4789 | m = gfc_match (" %n", name); |
4790 | switch (m) | |
4791 | { | |
4792 | case MATCH_YES: | |
36d3fb4c | 4793 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4794 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4795 | { |
c4100eae | 4796 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4797 | return MATCH_ERROR; |
4798 | } | |
4e2cf5f5 | 4799 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4800 | && gfc_find_symbol (name, |
4801 | gfc_current_ns->proc_name->ns->parent, | |
4802 | 1, &sym)) | |
636dff67 | 4803 | { |
c4100eae | 4804 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4805 | return MATCH_ERROR; |
4806 | } | |
4807 | ||
4808 | if (sym == NULL) | |
4809 | { | |
c4100eae | 4810 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4811 | "at %C - does not exist.", name); |
4812 | return MATCH_ERROR; | |
4813 | } | |
4814 | ||
dd8b9dde | 4815 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4816 | { |
db30e21c | 4817 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4818 | "at %C", name); |
636dff67 SK |
4819 | goto next_item; |
4820 | } | |
4821 | ||
dd8b9dde | 4822 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4823 | st->n.sym = sym; |
4824 | sym->refs++; | |
5a8af0b4 | 4825 | sym->attr.imported = 1; |
8998be20 | 4826 | |
c3f34952 TB |
4827 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4828 | { | |
4829 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4830 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4831 | lower-case name contains the associated generic function. */ |
c3f34952 | 4832 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4833 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4834 | st->n.sym = sym; |
4835 | sym->refs++; | |
4836 | sym->attr.imported = 1; | |
4837 | } | |
4838 | ||
8998be20 TB |
4839 | goto next_item; |
4840 | ||
4841 | case MATCH_NO: | |
4842 | break; | |
4843 | ||
4844 | case MATCH_ERROR: | |
4845 | return MATCH_ERROR; | |
4846 | } | |
4847 | ||
4848 | next_item: | |
4849 | if (gfc_match_eos () == MATCH_YES) | |
4850 | break; | |
4851 | if (gfc_match_char (',') != MATCH_YES) | |
4852 | goto syntax; | |
4853 | } | |
4854 | ||
4855 | return MATCH_YES; | |
4856 | ||
4857 | syntax: | |
4858 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4859 | return MATCH_ERROR; | |
4860 | } | |
e5ddaa24 | 4861 | |
66e4ab31 | 4862 | |
f2449db4 RS |
4863 | /* A minimal implementation of gfc_match without whitespace, escape |
4864 | characters or variable arguments. Returns true if the next | |
4865 | characters match the TARGET template exactly. */ | |
4866 | ||
4867 | static bool | |
4868 | match_string_p (const char *target) | |
4869 | { | |
4870 | const char *p; | |
4871 | ||
4872 | for (p = target; *p; p++) | |
8fc541d3 | 4873 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4874 | return false; |
4875 | return true; | |
4876 | } | |
4877 | ||
6de9cd9a DN |
4878 | /* Matches an attribute specification including array specs. If |
4879 | successful, leaves the variables current_attr and current_as | |
4880 | holding the specification. Also sets the colon_seen variable for | |
4881 | later use by matchers associated with initializations. | |
4882 | ||
4883 | This subroutine is a little tricky in the sense that we don't know | |
4884 | if we really have an attr-spec until we hit the double colon. | |
4885 | Until that time, we can only return MATCH_NO. This forces us to | |
4886 | check for duplicate specification at this level. */ | |
4887 | ||
4888 | static match | |
4889 | match_attr_spec (void) | |
4890 | { | |
6de9cd9a | 4891 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4892 | enum |
ea20e8be JW |
4893 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4894 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4895 | DECL_DIMENSION, DECL_EXTERNAL, | |
4896 | DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4897 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4898 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4899 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4900 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4901 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4902 | }; |
6de9cd9a DN |
4903 | |
4904 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4905 | #define NUM_DECL GFC_DECL_END | |
4906 | ||
ea20e8be JW |
4907 | /* Make sure that values from sym_intent are safe to be used here. */ |
4908 | gcc_assert (INTENT_IN > 0); | |
4909 | ||
6de9cd9a DN |
4910 | locus start, seen_at[NUM_DECL]; |
4911 | int seen[NUM_DECL]; | |
09639a83 | 4912 | unsigned int d; |
6de9cd9a DN |
4913 | const char *attr; |
4914 | match m; | |
524af0d6 | 4915 | bool t; |
6de9cd9a DN |
4916 | |
4917 | gfc_clear_attr (¤t_attr); | |
63645982 | 4918 | start = gfc_current_locus; |
6de9cd9a DN |
4919 | |
4920 | current_as = NULL; | |
4921 | colon_seen = 0; | |
6f855a26 | 4922 | attr_seen = 0; |
6de9cd9a DN |
4923 | |
4924 | /* See if we get all of the keywords up to the final double colon. */ | |
4925 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4926 | seen[d] = 0; | |
4927 | ||
4928 | for (;;) | |
4929 | { | |
8fc541d3 | 4930 | char ch; |
a8b3b0b6 | 4931 | |
f2449db4 RS |
4932 | d = DECL_NONE; |
4933 | gfc_gobble_whitespace (); | |
4934 | ||
8fc541d3 | 4935 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4936 | if (ch == ':') |
4937 | { | |
4938 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4939 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4940 | break; |
4941 | } | |
4942 | else if (ch == ',') | |
a8b3b0b6 | 4943 | { |
a8b3b0b6 | 4944 | gfc_gobble_whitespace (); |
8fc541d3 | 4945 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4946 | { |
f2449db4 | 4947 | case 'a': |
1eee5628 TB |
4948 | gfc_next_ascii_char (); |
4949 | switch (gfc_next_ascii_char ()) | |
4950 | { | |
4951 | case 'l': | |
4952 | if (match_string_p ("locatable")) | |
4953 | { | |
4954 | /* Matched "allocatable". */ | |
4955 | d = DECL_ALLOCATABLE; | |
4956 | } | |
4957 | break; | |
4958 | ||
4959 | case 's': | |
4960 | if (match_string_p ("ynchronous")) | |
4961 | { | |
4962 | /* Matched "asynchronous". */ | |
4963 | d = DECL_ASYNCHRONOUS; | |
4964 | } | |
4965 | break; | |
34d567d1 FR |
4966 | |
4967 | case 'u': | |
4968 | if (match_string_p ("tomatic")) | |
4969 | { | |
4970 | /* Matched "automatic". */ | |
4971 | d = DECL_AUTOMATIC; | |
4972 | } | |
4973 | break; | |
1eee5628 | 4974 | } |
fe4e525c | 4975 | break; |
f2449db4 RS |
4976 | |
4977 | case 'b': | |
a8b3b0b6 | 4978 | /* Try and match the bind(c). */ |
1eabf70a | 4979 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4980 | if (m == MATCH_YES) |
a8b3b0b6 | 4981 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4982 | else if (m == MATCH_ERROR) |
4983 | goto cleanup; | |
f2449db4 RS |
4984 | break; |
4985 | ||
be59db2d | 4986 | case 'c': |
fe4e525c TB |
4987 | gfc_next_ascii_char (); |
4988 | if ('o' != gfc_next_ascii_char ()) | |
4989 | break; | |
4990 | switch (gfc_next_ascii_char ()) | |
4991 | { | |
4992 | case 'd': | |
4993 | if (match_string_p ("imension")) | |
4994 | { | |
4995 | d = DECL_CODIMENSION; | |
4996 | break; | |
4997 | } | |
191816a3 | 4998 | /* FALLTHRU */ |
fe4e525c TB |
4999 | case 'n': |
5000 | if (match_string_p ("tiguous")) | |
5001 | { | |
5002 | d = DECL_CONTIGUOUS; | |
5003 | break; | |
5004 | } | |
5005 | } | |
be59db2d TB |
5006 | break; |
5007 | ||
f2449db4 RS |
5008 | case 'd': |
5009 | if (match_string_p ("dimension")) | |
5010 | d = DECL_DIMENSION; | |
5011 | break; | |
5012 | ||
5013 | case 'e': | |
5014 | if (match_string_p ("external")) | |
5015 | d = DECL_EXTERNAL; | |
5016 | break; | |
5017 | ||
5018 | case 'i': | |
5019 | if (match_string_p ("int")) | |
5020 | { | |
8fc541d3 | 5021 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5022 | if (ch == 'e') |
5023 | { | |
5024 | if (match_string_p ("nt")) | |
5025 | { | |
5026 | /* Matched "intent". */ | |
ea20e8be JW |
5027 | d = match_intent_spec (); |
5028 | if (d == INTENT_UNKNOWN) | |
5029 | { | |
5030 | m = MATCH_ERROR; | |
5031 | goto cleanup; | |
5032 | } | |
f2449db4 RS |
5033 | } |
5034 | } | |
5035 | else if (ch == 'r') | |
5036 | { | |
5037 | if (match_string_p ("insic")) | |
5038 | { | |
5039 | /* Matched "intrinsic". */ | |
5040 | d = DECL_INTRINSIC; | |
5041 | } | |
5042 | } | |
5043 | } | |
5044 | break; | |
5045 | ||
5bab4c96 PT |
5046 | case 'k': |
5047 | if (match_string_p ("kind")) | |
5048 | d = DECL_KIND; | |
5049 | break; | |
5050 | ||
5051 | case 'l': | |
5052 | if (match_string_p ("len")) | |
5053 | d = DECL_LEN; | |
5054 | break; | |
5055 | ||
f2449db4 RS |
5056 | case 'o': |
5057 | if (match_string_p ("optional")) | |
5058 | d = DECL_OPTIONAL; | |
5059 | break; | |
5060 | ||
5061 | case 'p': | |
8fc541d3 FXC |
5062 | gfc_next_ascii_char (); |
5063 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
5064 | { |
5065 | case 'a': | |
5066 | if (match_string_p ("rameter")) | |
5067 | { | |
5068 | /* Matched "parameter". */ | |
5069 | d = DECL_PARAMETER; | |
5070 | } | |
5071 | break; | |
5072 | ||
5073 | case 'o': | |
5074 | if (match_string_p ("inter")) | |
5075 | { | |
5076 | /* Matched "pointer". */ | |
5077 | d = DECL_POINTER; | |
5078 | } | |
5079 | break; | |
5080 | ||
5081 | case 'r': | |
8fc541d3 | 5082 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
5083 | if (ch == 'i') |
5084 | { | |
5085 | if (match_string_p ("vate")) | |
5086 | { | |
5087 | /* Matched "private". */ | |
5088 | d = DECL_PRIVATE; | |
5089 | } | |
5090 | } | |
5091 | else if (ch == 'o') | |
5092 | { | |
5093 | if (match_string_p ("tected")) | |
5094 | { | |
5095 | /* Matched "protected". */ | |
5096 | d = DECL_PROTECTED; | |
5097 | } | |
5098 | } | |
5099 | break; | |
5100 | ||
5101 | case 'u': | |
5102 | if (match_string_p ("blic")) | |
5103 | { | |
5104 | /* Matched "public". */ | |
5105 | d = DECL_PUBLIC; | |
5106 | } | |
5107 | break; | |
5108 | } | |
5109 | break; | |
5110 | ||
5111 | case 's': | |
34d567d1 FR |
5112 | gfc_next_ascii_char (); |
5113 | switch (gfc_next_ascii_char ()) | |
5114 | { | |
5115 | case 'a': | |
5116 | if (match_string_p ("ve")) | |
5117 | { | |
5118 | /* Matched "save". */ | |
5119 | d = DECL_SAVE; | |
5120 | } | |
5121 | break; | |
5122 | ||
5123 | case 't': | |
5124 | if (match_string_p ("atic")) | |
5125 | { | |
5126 | /* Matched "static". */ | |
5127 | d = DECL_STATIC; | |
5128 | } | |
5129 | break; | |
5130 | } | |
f2449db4 RS |
5131 | break; |
5132 | ||
5133 | case 't': | |
5134 | if (match_string_p ("target")) | |
5135 | d = DECL_TARGET; | |
5136 | break; | |
5137 | ||
5138 | case 'v': | |
8fc541d3 FXC |
5139 | gfc_next_ascii_char (); |
5140 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
5141 | if (ch == 'a') |
5142 | { | |
5143 | if (match_string_p ("lue")) | |
5144 | { | |
5145 | /* Matched "value". */ | |
5146 | d = DECL_VALUE; | |
5147 | } | |
5148 | } | |
5149 | else if (ch == 'o') | |
5150 | { | |
5151 | if (match_string_p ("latile")) | |
5152 | { | |
5153 | /* Matched "volatile". */ | |
5154 | d = DECL_VOLATILE; | |
5155 | } | |
5156 | } | |
5157 | break; | |
a8b3b0b6 CR |
5158 | } |
5159 | } | |
d468bcdb | 5160 | |
f2449db4 RS |
5161 | /* No double colon and no recognizable decl_type, so assume that |
5162 | we've been looking at something else the whole time. */ | |
5163 | if (d == DECL_NONE) | |
5164 | { | |
5165 | m = MATCH_NO; | |
5166 | goto cleanup; | |
5167 | } | |
d51347f9 | 5168 | |
acb388a0 JD |
5169 | /* Check to make sure any parens are paired up correctly. */ |
5170 | if (gfc_match_parens () == MATCH_ERROR) | |
5171 | { | |
5172 | m = MATCH_ERROR; | |
5173 | goto cleanup; | |
5174 | } | |
5175 | ||
6de9cd9a | 5176 | seen[d]++; |
63645982 | 5177 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 5178 | |
d3a9eea2 | 5179 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 5180 | { |
d3a9eea2 | 5181 | gfc_array_spec *as = NULL; |
6de9cd9a | 5182 | |
d3a9eea2 TB |
5183 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5184 | d == DECL_CODIMENSION); | |
5185 | ||
5186 | if (current_as == NULL) | |
5187 | current_as = as; | |
5188 | else if (m == MATCH_YES) | |
6de9cd9a | 5189 | { |
524af0d6 | 5190 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 5191 | m = MATCH_ERROR; |
cede9502 | 5192 | free (as); |
6de9cd9a DN |
5193 | } |
5194 | ||
be59db2d TB |
5195 | if (m == MATCH_NO) |
5196 | { | |
d3a9eea2 TB |
5197 | if (d == DECL_CODIMENSION) |
5198 | gfc_error ("Missing codimension specification at %C"); | |
5199 | else | |
5200 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
5201 | m = MATCH_ERROR; |
5202 | } | |
5203 | ||
5204 | if (m == MATCH_ERROR) | |
5205 | goto cleanup; | |
5206 | } | |
6de9cd9a DN |
5207 | } |
5208 | ||
6de9cd9a DN |
5209 | /* Since we've seen a double colon, we have to be looking at an |
5210 | attr-spec. This means that we can now issue errors. */ | |
5211 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5212 | if (seen[d] > 1) | |
5213 | { | |
5214 | switch (d) | |
5215 | { | |
5216 | case DECL_ALLOCATABLE: | |
5217 | attr = "ALLOCATABLE"; | |
5218 | break; | |
1eee5628 TB |
5219 | case DECL_ASYNCHRONOUS: |
5220 | attr = "ASYNCHRONOUS"; | |
5221 | break; | |
be59db2d TB |
5222 | case DECL_CODIMENSION: |
5223 | attr = "CODIMENSION"; | |
5224 | break; | |
fe4e525c TB |
5225 | case DECL_CONTIGUOUS: |
5226 | attr = "CONTIGUOUS"; | |
5227 | break; | |
6de9cd9a DN |
5228 | case DECL_DIMENSION: |
5229 | attr = "DIMENSION"; | |
5230 | break; | |
5231 | case DECL_EXTERNAL: | |
5232 | attr = "EXTERNAL"; | |
5233 | break; | |
5234 | case DECL_IN: | |
5235 | attr = "INTENT (IN)"; | |
5236 | break; | |
5237 | case DECL_OUT: | |
5238 | attr = "INTENT (OUT)"; | |
5239 | break; | |
5240 | case DECL_INOUT: | |
5241 | attr = "INTENT (IN OUT)"; | |
5242 | break; | |
5243 | case DECL_INTRINSIC: | |
5244 | attr = "INTRINSIC"; | |
5245 | break; | |
5246 | case DECL_OPTIONAL: | |
5247 | attr = "OPTIONAL"; | |
5248 | break; | |
5bab4c96 PT |
5249 | case DECL_KIND: |
5250 | attr = "KIND"; | |
5251 | break; | |
5252 | case DECL_LEN: | |
5253 | attr = "LEN"; | |
5254 | break; | |
6de9cd9a DN |
5255 | case DECL_PARAMETER: |
5256 | attr = "PARAMETER"; | |
5257 | break; | |
5258 | case DECL_POINTER: | |
5259 | attr = "POINTER"; | |
5260 | break; | |
ee7e677f TB |
5261 | case DECL_PROTECTED: |
5262 | attr = "PROTECTED"; | |
5263 | break; | |
6de9cd9a DN |
5264 | case DECL_PRIVATE: |
5265 | attr = "PRIVATE"; | |
5266 | break; | |
5267 | case DECL_PUBLIC: | |
5268 | attr = "PUBLIC"; | |
5269 | break; | |
5270 | case DECL_SAVE: | |
5271 | attr = "SAVE"; | |
5272 | break; | |
34d567d1 FR |
5273 | case DECL_STATIC: |
5274 | attr = "STATIC"; | |
5275 | break; | |
5276 | case DECL_AUTOMATIC: | |
5277 | attr = "AUTOMATIC"; | |
5278 | break; | |
6de9cd9a DN |
5279 | case DECL_TARGET: |
5280 | attr = "TARGET"; | |
5281 | break; | |
a8b3b0b6 CR |
5282 | case DECL_IS_BIND_C: |
5283 | attr = "IS_BIND_C"; | |
5284 | break; | |
5285 | case DECL_VALUE: | |
5286 | attr = "VALUE"; | |
5287 | break; | |
775e6c3a TB |
5288 | case DECL_VOLATILE: |
5289 | attr = "VOLATILE"; | |
5290 | break; | |
6de9cd9a | 5291 | default: |
66e4ab31 | 5292 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5293 | } |
5294 | ||
5295 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5296 | m = MATCH_ERROR; | |
5297 | goto cleanup; | |
5298 | } | |
5299 | ||
5300 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5301 | to the current attribute. */ | |
5302 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5303 | { | |
5304 | if (seen[d] == 0) | |
5305 | continue; | |
6f855a26 FR |
5306 | else |
5307 | attr_seen = 1; | |
6de9cd9a | 5308 | |
34d567d1 FR |
5309 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5310 | && !flag_dec_static) | |
5311 | { | |
cf004230 FR |
5312 | gfc_error ("%s at %L is a DEC extension, enable with " |
5313 | "%<-fdec-static%>", | |
34d567d1 FR |
5314 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5315 | m = MATCH_ERROR; | |
5316 | goto cleanup; | |
5317 | } | |
5318 | /* Allow SAVE with STATIC, but don't complain. */ | |
5319 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5320 | continue; | |
5321 | ||
6de9cd9a | 5322 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
5323 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5324 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5325 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5326 | { |
5046aff5 PT |
5327 | if (d == DECL_ALLOCATABLE) |
5328 | { | |
524af0d6 JB |
5329 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5330 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
5331 | { |
5332 | m = MATCH_ERROR; | |
5333 | goto cleanup; | |
5334 | } | |
636dff67 | 5335 | } |
5bab4c96 PT |
5336 | else if (d == DECL_KIND) |
5337 | { | |
5338 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5339 | "attribute at %C in a TYPE definition")) | |
5340 | { | |
5341 | m = MATCH_ERROR; | |
5342 | goto cleanup; | |
5343 | } | |
5344 | if (current_ts.type != BT_INTEGER) | |
5345 | { | |
5346 | gfc_error ("Component with KIND attribute at %C must be " | |
5347 | "INTEGER"); | |
5348 | m = MATCH_ERROR; | |
5349 | goto cleanup; | |
5350 | } | |
5351 | if (current_ts.kind != gfc_default_integer_kind) | |
5352 | { | |
5353 | gfc_error ("Component with KIND attribute at %C must be " | |
5354 | "default integer kind (%d)", | |
5355 | gfc_default_integer_kind); | |
5356 | m = MATCH_ERROR; | |
5357 | goto cleanup; | |
5358 | } | |
5359 | } | |
5360 | else if (d == DECL_LEN) | |
5361 | { | |
5362 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5363 | "attribute at %C in a TYPE definition")) | |
5364 | { | |
5365 | m = MATCH_ERROR; | |
5366 | goto cleanup; | |
5367 | } | |
5368 | if (current_ts.type != BT_INTEGER) | |
5369 | { | |
5370 | gfc_error ("Component with LEN attribute at %C must be " | |
5371 | "INTEGER"); | |
5372 | m = MATCH_ERROR; | |
5373 | goto cleanup; | |
5374 | } | |
5375 | if (current_ts.kind != gfc_default_integer_kind) | |
5376 | { | |
5377 | gfc_error ("Component with LEN attribute at %C must be " | |
5378 | "default integer kind (%d)", | |
5379 | gfc_default_integer_kind); | |
5380 | m = MATCH_ERROR; | |
5381 | goto cleanup; | |
5382 | } | |
5383 | } | |
636dff67 | 5384 | else |
5046aff5 PT |
5385 | { |
5386 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5387 | &seen_at[d]); |
5046aff5 PT |
5388 | m = MATCH_ERROR; |
5389 | goto cleanup; | |
5390 | } | |
6de9cd9a DN |
5391 | } |
5392 | ||
4213f93b | 5393 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5394 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5395 | { |
5396 | if (d == DECL_PRIVATE) | |
5397 | attr = "PRIVATE"; | |
5398 | else | |
5399 | attr = "PUBLIC"; | |
d51347f9 TB |
5400 | if (gfc_current_state () == COMP_DERIVED |
5401 | && gfc_state_stack->previous | |
5402 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5403 | { | |
524af0d6 | 5404 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5405 | "at %L in a TYPE definition", attr, |
524af0d6 | 5406 | &seen_at[d])) |
d51347f9 TB |
5407 | { |
5408 | m = MATCH_ERROR; | |
5409 | goto cleanup; | |
5410 | } | |
5411 | } | |
5412 | else | |
5413 | { | |
5414 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5415 | "specification part of a module", attr, &seen_at[d]); | |
5416 | m = MATCH_ERROR; | |
5417 | goto cleanup; | |
5418 | } | |
4213f93b PT |
5419 | } |
5420 | ||
5bab4c96 PT |
5421 | if (gfc_current_state () != COMP_DERIVED |
5422 | && (d == DECL_KIND || d == DECL_LEN)) | |
5423 | { | |
5424 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5425 | "definition", &seen_at[d]); | |
5426 | m = MATCH_ERROR; | |
5427 | goto cleanup; | |
5428 | } | |
5429 | ||
6de9cd9a DN |
5430 | switch (d) |
5431 | { | |
5432 | case DECL_ALLOCATABLE: | |
5433 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5434 | break; | |
5435 | ||
1eee5628 | 5436 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5437 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5438 | t = false; | |
1eee5628 TB |
5439 | else |
5440 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5441 | break; | |
5442 | ||
be59db2d TB |
5443 | case DECL_CODIMENSION: |
5444 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5445 | break; | |
5446 | ||
fe4e525c | 5447 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5448 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5449 | t = false; | |
fe4e525c TB |
5450 | else |
5451 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5452 | break; | |
5453 | ||
6de9cd9a | 5454 | case DECL_DIMENSION: |
231b2fcc | 5455 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5456 | break; |
5457 | ||
5458 | case DECL_EXTERNAL: | |
5459 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5460 | break; | |
5461 | ||
5462 | case DECL_IN: | |
5463 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5464 | break; | |
5465 | ||
5466 | case DECL_OUT: | |
5467 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5468 | break; | |
5469 | ||
5470 | case DECL_INOUT: | |
5471 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5472 | break; | |
5473 | ||
5474 | case DECL_INTRINSIC: | |
5475 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5476 | break; | |
5477 | ||
5478 | case DECL_OPTIONAL: | |
5479 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5480 | break; | |
5481 | ||
5bab4c96 PT |
5482 | case DECL_KIND: |
5483 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5484 | break; | |
5485 | ||
5486 | case DECL_LEN: | |
5487 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5488 | break; | |
5489 | ||
6de9cd9a | 5490 | case DECL_PARAMETER: |
231b2fcc | 5491 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5492 | break; |
5493 | ||
5494 | case DECL_POINTER: | |
5495 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5496 | break; | |
5497 | ||
ee7e677f | 5498 | case DECL_PROTECTED: |
721be0f4 SK |
5499 | if (gfc_current_state () != COMP_MODULE |
5500 | || (gfc_current_ns->proc_name | |
5501 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5502 | { |
5503 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5504 | "part of a module"); | |
524af0d6 | 5505 | t = false; |
ee7e677f TB |
5506 | break; |
5507 | } | |
5508 | ||
524af0d6 JB |
5509 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5510 | t = false; | |
ee7e677f TB |
5511 | else |
5512 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5513 | break; | |
5514 | ||
6de9cd9a | 5515 | case DECL_PRIVATE: |
231b2fcc TS |
5516 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5517 | &seen_at[d]); | |
6de9cd9a DN |
5518 | break; |
5519 | ||
5520 | case DECL_PUBLIC: | |
231b2fcc TS |
5521 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5522 | &seen_at[d]); | |
6de9cd9a DN |
5523 | break; |
5524 | ||
34d567d1 | 5525 | case DECL_STATIC: |
6de9cd9a | 5526 | case DECL_SAVE: |
80f95228 | 5527 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5528 | break; |
5529 | ||
34d567d1 FR |
5530 | case DECL_AUTOMATIC: |
5531 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5532 | break; | |
5533 | ||
6de9cd9a DN |
5534 | case DECL_TARGET: |
5535 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5536 | break; | |
5537 | ||
a8b3b0b6 CR |
5538 | case DECL_IS_BIND_C: |
5539 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5540 | break; | |
f5acf0f2 | 5541 | |
06469efd | 5542 | case DECL_VALUE: |
524af0d6 JB |
5543 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5544 | t = false; | |
06469efd PT |
5545 | else |
5546 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5547 | break; | |
5548 | ||
775e6c3a | 5549 | case DECL_VOLATILE: |
524af0d6 JB |
5550 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5551 | t = false; | |
775e6c3a TB |
5552 | else |
5553 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5554 | break; | |
5555 | ||
6de9cd9a DN |
5556 | default: |
5557 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5558 | } | |
5559 | ||
524af0d6 | 5560 | if (!t) |
6de9cd9a DN |
5561 | { |
5562 | m = MATCH_ERROR; | |
5563 | goto cleanup; | |
5564 | } | |
5565 | } | |
5566 | ||
dab2cbf8 | 5567 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5568 | if ((gfc_current_state () == COMP_MODULE |
5569 | || gfc_current_state () == COMP_SUBMODULE) | |
5570 | && !current_attr.save | |
dab2cbf8 | 5571 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5572 | current_attr.save = SAVE_IMPLICIT; |
5573 | ||
6de9cd9a DN |
5574 | colon_seen = 1; |
5575 | return MATCH_YES; | |
5576 | ||
5577 | cleanup: | |
63645982 | 5578 | gfc_current_locus = start; |
6de9cd9a DN |
5579 | gfc_free_array_spec (current_as); |
5580 | current_as = NULL; | |
6f855a26 | 5581 | attr_seen = 0; |
6de9cd9a DN |
5582 | return m; |
5583 | } | |
5584 | ||
5585 | ||
a8b3b0b6 CR |
5586 | /* Set the binding label, dest_label, either with the binding label |
5587 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5588 | will be the symbol name in all lower case, as required by the draft | |
5589 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5590 | there is more than one argument (num_idents), it is an error. */ | |
5591 | ||
524af0d6 | 5592 | static bool |
f5acf0f2 | 5593 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5594 | int num_idents) |
a8b3b0b6 | 5595 | { |
ad4a2f64 | 5596 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5597 | { |
ad4a2f64 TB |
5598 | gfc_error ("Multiple identifiers provided with " |
5599 | "single NAME= specifier at %C"); | |
524af0d6 | 5600 | return false; |
ad4a2f64 | 5601 | } |
a8b3b0b6 | 5602 | |
62603fae | 5603 | if (curr_binding_label) |
eea58adb | 5604 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5605 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5606 | else |
5607 | { | |
5608 | /* No binding label given, and the NAME= specifier did not exist, | |
5609 | which means there was no NAME="". */ | |
5610 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5611 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5612 | } |
f5acf0f2 | 5613 | |
524af0d6 | 5614 | return true; |
a8b3b0b6 CR |
5615 | } |
5616 | ||
5617 | ||
5618 | /* Set the status of the given common block as being BIND(C) or not, | |
5619 | depending on the given parameter, is_bind_c. */ | |
5620 | ||
5621 | void | |
5622 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5623 | { | |
5624 | com_block->is_bind_c = is_bind_c; | |
5625 | return; | |
5626 | } | |
5627 | ||
5628 | ||
5629 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5630 | ||
524af0d6 | 5631 | bool |
00820a2a | 5632 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5633 | { |
bc21d315 | 5634 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5635 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5636 | ? true : false; |
00820a2a | 5637 | else if (ts->type == BT_CLASS) |
524af0d6 | 5638 | return false; |
45a69325 | 5639 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5640 | return false; |
45a69325 | 5641 | |
524af0d6 | 5642 | return true; |
a8b3b0b6 CR |
5643 | } |
5644 | ||
5645 | ||
5646 | /* Verify that the variables of a given common block, which has been | |
5647 | defined with the attribute specifier bind(c), to be of a C | |
5648 | interoperable type. Errors will be reported here, if | |
5649 | encountered. */ | |
5650 | ||
524af0d6 | 5651 | bool |
a8b3b0b6 CR |
5652 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5653 | { | |
5654 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5655 | bool retval = true; |
a8b3b0b6 CR |
5656 | |
5657 | curr_sym = com_block->head; | |
f5acf0f2 | 5658 | |
a8b3b0b6 CR |
5659 | /* Make sure we have at least one symbol. */ |
5660 | if (curr_sym == NULL) | |
5661 | return retval; | |
5662 | ||
5663 | /* Here we know we have a symbol, so we'll execute this loop | |
5664 | at least once. */ | |
5665 | do | |
5666 | { | |
5667 | /* The second to last param, 1, says this is in a common block. */ | |
5668 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5669 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5670 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5671 | |
5672 | return retval; | |
5673 | } | |
5674 | ||
5675 | ||
5676 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5677 | an appropriate error message is reported. */ | |
5678 | ||
524af0d6 | 5679 | bool |
a8b3b0b6 CR |
5680 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5681 | int is_in_common, gfc_common_head *com_block) | |
5682 | { | |
8327f9c2 | 5683 | bool bind_c_function = false; |
524af0d6 | 5684 | bool retval = true; |
d8fa96e0 | 5685 | |
8327f9c2 TB |
5686 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5687 | bind_c_function = true; | |
5688 | ||
d8fa96e0 CR |
5689 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5690 | { | |
5691 | tmp_sym = tmp_sym->result; | |
5692 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5693 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5694 | { |
48749dbc MLI |
5695 | gfc_warning (OPT_Wc_binding_type, |
5696 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5697 | "%L may not be C interoperable", tmp_sym->name, |
5698 | &tmp_sym->declared_at); | |
5699 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5700 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5701 | tmp_sym->ts.is_c_interop = 1; | |
5702 | tmp_sym->attr.is_c_interop = 1; | |
5703 | } | |
5704 | } | |
8327f9c2 | 5705 | |
a8b3b0b6 CR |
5706 | /* Here, we know we have the bind(c) attribute, so if we have |
5707 | enough type info, then verify that it's a C interop kind. | |
5708 | The info could be in the symbol already, or possibly still in | |
5709 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5710 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5711 | { |
524af0d6 | 5712 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5713 | { |
5714 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5715 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5716 | { |
48749dbc MLI |
5717 | gfc_warning (OPT_Wc_binding_type, |
5718 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5719 | "may not be a C interoperable " |
48749dbc | 5720 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5721 | tmp_sym->name, com_block->name, |
5722 | &(tmp_sym->declared_at), com_block->name); | |
5723 | } | |
5724 | else | |
5725 | { | |
5726 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5727 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5728 | "interoperable but it is BIND(C)", |
5729 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5730 | else if (warn_c_binding_type) |
48749dbc | 5731 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5732 | "may not be a C interoperable " |
c4100eae | 5733 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5734 | tmp_sym->name, &(tmp_sym->declared_at)); |
5735 | } | |
5736 | } | |
f5acf0f2 | 5737 | |
a8b3b0b6 CR |
5738 | /* Variables declared w/in a common block can't be bind(c) |
5739 | since there's no way for C to see these variables, so there's | |
5740 | semantically no reason for the attribute. */ | |
5741 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5742 | { | |
c4100eae | 5743 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5744 | "%L cannot be declared with BIND(C) " |
5745 | "since it is not a global", | |
5746 | tmp_sym->name, com_block->name, | |
5747 | &(tmp_sym->declared_at)); | |
524af0d6 | 5748 | retval = false; |
a8b3b0b6 | 5749 | } |
f5acf0f2 | 5750 | |
67914693 | 5751 | /* Scalar variables that are bind(c) cannot have the pointer |
a8b3b0b6 CR |
5752 | or allocatable attributes. */ |
5753 | if (tmp_sym->attr.is_bind_c == 1) | |
5754 | { | |
5755 | if (tmp_sym->attr.pointer == 1) | |
5756 | { | |
c4100eae | 5757 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5758 | "POINTER and BIND(C) attributes", |
5759 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5760 | retval = false; |
a8b3b0b6 CR |
5761 | } |
5762 | ||
5763 | if (tmp_sym->attr.allocatable == 1) | |
5764 | { | |
c4100eae | 5765 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5766 | "ALLOCATABLE and BIND(C) attributes", |
5767 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5768 | retval = false; |
a8b3b0b6 CR |
5769 | } |
5770 | ||
8327f9c2 TB |
5771 | } |
5772 | ||
5773 | /* If it is a BIND(C) function, make sure the return value is a | |
5774 | scalar value. The previous tests in this function made sure | |
5775 | the type is interoperable. */ | |
5776 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5777 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5778 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5779 | ||
67914693 | 5780 | /* BIND(C) functions cannot return a character string. */ |
8327f9c2 | 5781 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) |
bc21d315 JW |
5782 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5783 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5784 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
86ba9ce6 | 5785 | gfc_error ("Return type of BIND(C) function %qs of character " |
0f4f8561 | 5786 | "type at %L must have length 1", tmp_sym->name, |
a8b3b0b6 | 5787 | &(tmp_sym->declared_at)); |
a8b3b0b6 CR |
5788 | } |
5789 | ||
5790 | /* See if the symbol has been marked as private. If it has, make sure | |
5791 | there is no binding label and warn the user if there is one. */ | |
5792 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5793 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5794 | /* Use gfc_warning_now because we won't say that the symbol fails |
5795 | just because of this. */ | |
db30e21c | 5796 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5797 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5798 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5799 | ||
5800 | return retval; | |
5801 | } | |
5802 | ||
5803 | ||
5804 | /* Set the appropriate fields for a symbol that's been declared as | |
5805 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5806 | the type is C interoperable. Errors are reported by the functions | |
5807 | used to set/test these fields. */ | |
5808 | ||
524af0d6 | 5809 | bool |
a8b3b0b6 CR |
5810 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5811 | { | |
524af0d6 | 5812 | bool retval = true; |
f5acf0f2 | 5813 | |
a8b3b0b6 CR |
5814 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5815 | ||
5816 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5817 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5818 | ||
524af0d6 JB |
5819 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5820 | return false; | |
a8b3b0b6 CR |
5821 | |
5822 | return retval; | |
5823 | } | |
5824 | ||
5825 | ||
5826 | /* Set the fields marking the given common block as BIND(C), including | |
5827 | a binding label, and report any errors encountered. */ | |
5828 | ||
524af0d6 | 5829 | bool |
a8b3b0b6 CR |
5830 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5831 | { | |
524af0d6 | 5832 | bool retval = true; |
f5acf0f2 | 5833 | |
a8b3b0b6 | 5834 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5835 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5836 | num_idents)) |
5837 | return false; | |
a8b3b0b6 CR |
5838 | |
5839 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5840 | set_com_block_bind_c (com_block, 1); | |
5841 | ||
5842 | return retval; | |
5843 | } | |
5844 | ||
5845 | ||
5846 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5847 | attribute applies to. */ | |
5848 | ||
524af0d6 | 5849 | bool |
a8b3b0b6 CR |
5850 | get_bind_c_idents (void) |
5851 | { | |
5852 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5853 | int num_idents = 0; | |
5854 | gfc_symbol *tmp_sym = NULL; | |
5855 | match found_id; | |
5856 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5857 | |
a8b3b0b6 CR |
5858 | if (gfc_match_name (name) == MATCH_YES) |
5859 | { | |
5860 | found_id = MATCH_YES; | |
5861 | gfc_get_ha_symbol (name, &tmp_sym); | |
5862 | } | |
5863 | else if (match_common_name (name) == MATCH_YES) | |
5864 | { | |
5865 | found_id = MATCH_YES; | |
5866 | com_block = gfc_get_common (name, 0); | |
5867 | } | |
5868 | else | |
5869 | { | |
5870 | gfc_error ("Need either entity or common block name for " | |
5871 | "attribute specification statement at %C"); | |
524af0d6 | 5872 | return false; |
a8b3b0b6 | 5873 | } |
f5acf0f2 | 5874 | |
a8b3b0b6 CR |
5875 | /* Save the current identifier and look for more. */ |
5876 | do | |
5877 | { | |
5878 | /* Increment the number of identifiers found for this spec stmt. */ | |
5879 | num_idents++; | |
5880 | ||
5881 | /* Make sure we have a sym or com block, and verify that it can | |
5882 | be bind(c). Set the appropriate field(s) and look for more | |
5883 | identifiers. */ | |
f5acf0f2 | 5884 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5885 | { |
5886 | if (tmp_sym != NULL) | |
5887 | { | |
524af0d6 JB |
5888 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5889 | return false; | |
a8b3b0b6 CR |
5890 | } |
5891 | else | |
5892 | { | |
524af0d6 JB |
5893 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5894 | return false; | |
a8b3b0b6 | 5895 | } |
f5acf0f2 | 5896 | |
a8b3b0b6 CR |
5897 | /* Look to see if we have another identifier. */ |
5898 | tmp_sym = NULL; | |
5899 | if (gfc_match_eos () == MATCH_YES) | |
5900 | found_id = MATCH_NO; | |
5901 | else if (gfc_match_char (',') != MATCH_YES) | |
5902 | found_id = MATCH_NO; | |
5903 | else if (gfc_match_name (name) == MATCH_YES) | |
5904 | { | |
5905 | found_id = MATCH_YES; | |
5906 | gfc_get_ha_symbol (name, &tmp_sym); | |
5907 | } | |
5908 | else if (match_common_name (name) == MATCH_YES) | |
5909 | { | |
5910 | found_id = MATCH_YES; | |
5911 | com_block = gfc_get_common (name, 0); | |
5912 | } | |
5913 | else | |
5914 | { | |
5915 | gfc_error ("Missing entity or common block name for " | |
5916 | "attribute specification statement at %C"); | |
524af0d6 | 5917 | return false; |
a8b3b0b6 CR |
5918 | } |
5919 | } | |
5920 | else | |
5921 | { | |
5922 | gfc_internal_error ("Missing symbol"); | |
5923 | } | |
5924 | } while (found_id == MATCH_YES); | |
5925 | ||
5926 | /* if we get here we were successful */ | |
524af0d6 | 5927 | return true; |
a8b3b0b6 CR |
5928 | } |
5929 | ||
5930 | ||
5931 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5932 | |
a8b3b0b6 CR |
5933 | match |
5934 | gfc_match_bind_c_stmt (void) | |
5935 | { | |
5936 | match found_match = MATCH_NO; | |
5937 | gfc_typespec *ts; | |
5938 | ||
5939 | ts = ¤t_ts; | |
f5acf0f2 | 5940 | |
a8b3b0b6 CR |
5941 | /* This may not be necessary. */ |
5942 | gfc_clear_ts (ts); | |
5943 | /* Clear the temporary binding label holder. */ | |
62603fae | 5944 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5945 | |
5946 | /* Look for the bind(c). */ | |
1eabf70a | 5947 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5948 | |
5949 | if (found_match == MATCH_YES) | |
5950 | { | |
878cdb7b TB |
5951 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5952 | return MATCH_ERROR; | |
5953 | ||
a8b3b0b6 CR |
5954 | /* Look for the :: now, but it is not required. */ |
5955 | gfc_match (" :: "); | |
5956 | ||
5957 | /* Get the identifier(s) that needs to be updated. This may need to | |
5958 | change to hand the flag(s) for the attr specified so all identifiers | |
5959 | found can have all appropriate parts updated (assuming that the same | |
5960 | spec stmt can have multiple attrs, such as both bind(c) and | |
5961 | allocatable...). */ | |
524af0d6 | 5962 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5963 | /* Error message should have printed already. */ |
5964 | return MATCH_ERROR; | |
5965 | } | |
5966 | ||
5967 | return found_match; | |
5968 | } | |
5969 | ||
5970 | ||
6de9cd9a DN |
5971 | /* Match a data declaration statement. */ |
5972 | ||
5973 | match | |
5974 | gfc_match_data_decl (void) | |
5975 | { | |
5976 | gfc_symbol *sym; | |
5977 | match m; | |
949d5b72 | 5978 | int elem; |
6de9cd9a | 5979 | |
5bab4c96 PT |
5980 | type_param_spec_list = NULL; |
5981 | decl_type_param_list = NULL; | |
5982 | ||
a8b3b0b6 | 5983 | num_idents_on_line = 0; |
f5acf0f2 | 5984 | |
e74f1cc8 | 5985 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5986 | if (m != MATCH_YES) |
5987 | return m; | |
5988 | ||
2e23972e | 5989 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5990 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5991 | { |
bc21d315 | 5992 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5993 | |
5994 | if (sym == NULL) | |
5995 | { | |
5996 | m = MATCH_ERROR; | |
5997 | goto cleanup; | |
5998 | } | |
5999 | ||
bc21d315 | 6000 | current_ts.u.derived = sym; |
6de9cd9a DN |
6001 | } |
6002 | ||
6003 | m = match_attr_spec (); | |
6004 | if (m == MATCH_ERROR) | |
6005 | { | |
6006 | m = MATCH_NO; | |
6007 | goto cleanup; | |
6008 | } | |
6009 | ||
8b704316 PT |
6010 | if (current_ts.type == BT_CLASS |
6011 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
6012 | goto ok; | |
6013 | ||
2e23972e JW |
6014 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
6015 | && current_ts.u.derived->components == NULL | |
bc21d315 | 6016 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
6017 | { |
6018 | ||
f6288c24 | 6019 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
6020 | goto ok; |
6021 | ||
00cad178 | 6022 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
bf9f15ee PT |
6023 | goto ok; |
6024 | ||
bc21d315 | 6025 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 6026 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 6027 | |
976e21f6 | 6028 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
6029 | which has its components defined, or be a structure definition |
6030 | actively being parsed. */ | |
6031 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 6032 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
6033 | || current_ts.u.derived->attr.zero_comp |
6034 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
6035 | goto ok; |
6036 | ||
a1b80ec7 JW |
6037 | gfc_error ("Derived type at %C has not been previously defined " |
6038 | "and so cannot appear in a derived type definition"); | |
6039 | m = MATCH_ERROR; | |
6040 | goto cleanup; | |
6de9cd9a DN |
6041 | } |
6042 | ||
6043 | ok: | |
6044 | /* If we have an old-style character declaration, and no new-style | |
6045 | attribute specifications, then there a comma is optional between | |
6046 | the type specification and the variable list. */ | |
6047 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
6048 | gfc_match_char (','); | |
6049 | ||
949d5b72 PT |
6050 | /* Give the types/attributes to symbols that follow. Give the element |
6051 | a number so that repeat character length expressions can be copied. */ | |
6052 | elem = 1; | |
6de9cd9a DN |
6053 | for (;;) |
6054 | { | |
a8b3b0b6 | 6055 | num_idents_on_line++; |
949d5b72 | 6056 | m = variable_decl (elem++); |
6de9cd9a DN |
6057 | if (m == MATCH_ERROR) |
6058 | goto cleanup; | |
6059 | if (m == MATCH_NO) | |
6060 | break; | |
6061 | ||
6062 | if (gfc_match_eos () == MATCH_YES) | |
6063 | goto cleanup; | |
6064 | if (gfc_match_char (',') != MATCH_YES) | |
6065 | break; | |
6066 | } | |
6067 | ||
0f447a6e | 6068 | if (!gfc_error_flag_test ()) |
94903212 FR |
6069 | { |
6070 | /* An anonymous structure declaration is unambiguous; if we matched one | |
6071 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
6072 | here to avoid confusing the remaining matchers, even if there was an | |
6073 | error during variable_decl. We must flush any such errors. Note this | |
6074 | causes the parser to gracefully continue parsing the remaining input | |
6075 | as a structure body, which likely follows. */ | |
6076 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6077 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6078 | { | |
6079 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6080 | " at %C"); | |
6081 | /* Skip the bad variable_decl and line up for the start of the | |
6082 | structure body. */ | |
6083 | gfc_error_recovery (); | |
6084 | m = MATCH_YES; | |
6085 | goto cleanup; | |
6086 | } | |
6087 | ||
6088 | gfc_error ("Syntax error in data declaration at %C"); | |
6089 | } | |
6090 | ||
6de9cd9a DN |
6091 | m = MATCH_ERROR; |
6092 | ||
a9f6f1f2 JD |
6093 | gfc_free_data_all (gfc_current_ns); |
6094 | ||
6de9cd9a | 6095 | cleanup: |
5bab4c96 PT |
6096 | if (saved_kind_expr) |
6097 | gfc_free_expr (saved_kind_expr); | |
6098 | if (type_param_spec_list) | |
6099 | gfc_free_actual_arglist (type_param_spec_list); | |
6100 | if (decl_type_param_list) | |
6101 | gfc_free_actual_arglist (decl_type_param_list); | |
6102 | saved_kind_expr = NULL; | |
6de9cd9a DN |
6103 | gfc_free_array_spec (current_as); |
6104 | current_as = NULL; | |
6105 | return m; | |
6106 | } | |
6107 | ||
2810dfab SK |
6108 | static bool |
6109 | in_module_or_interface(void) | |
6110 | { | |
6111 | if (gfc_current_state () == COMP_MODULE | |
0a524296 | 6112 | || gfc_current_state () == COMP_SUBMODULE |
2810dfab SK |
6113 | || gfc_current_state () == COMP_INTERFACE) |
6114 | return true; | |
6115 | ||
6116 | if (gfc_state_stack->state == COMP_CONTAINS | |
6117 | || gfc_state_stack->state == COMP_FUNCTION | |
6118 | || gfc_state_stack->state == COMP_SUBROUTINE) | |
6119 | { | |
6120 | gfc_state_data *p; | |
6121 | for (p = gfc_state_stack->previous; p ; p = p->previous) | |
6122 | { | |
0a524296 | 6123 | if (p->state == COMP_MODULE || p->state == COMP_SUBMODULE |
2810dfab SK |
6124 | || p->state == COMP_INTERFACE) |
6125 | return true; | |
6126 | } | |
6127 | } | |
6128 | return false; | |
6129 | } | |
6de9cd9a DN |
6130 | |
6131 | /* Match a prefix associated with a function or subroutine | |
6132 | declaration. If the typespec pointer is nonnull, then a typespec | |
6133 | can be matched. Note that if nothing matches, MATCH_YES is | |
6134 | returned (the null string was matched). */ | |
6135 | ||
1c8bcdf7 PT |
6136 | match |
6137 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 6138 | { |
7389bce6 | 6139 | bool seen_type; |
e6c14898 DK |
6140 | bool seen_impure; |
6141 | bool found_prefix; | |
6de9cd9a DN |
6142 | |
6143 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
6144 | seen_type = false; |
6145 | seen_impure = false; | |
6de9cd9a | 6146 | |
3df684e2 DK |
6147 | gcc_assert (!gfc_matching_prefix); |
6148 | gfc_matching_prefix = true; | |
f37e928c | 6149 | |
e6c14898 | 6150 | do |
6de9cd9a | 6151 | { |
e6c14898 | 6152 | found_prefix = false; |
6de9cd9a | 6153 | |
70112e2a PT |
6154 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6155 | corresponding attribute seems natural and distinguishes these | |
6156 | procedures from procedure types of PROC_MODULE, which these are | |
6157 | as well. */ | |
6158 | if (gfc_match ("module% ") == MATCH_YES) | |
6159 | { | |
6160 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6161 | goto error; | |
6162 | ||
2810dfab SK |
6163 | if (!in_module_or_interface ()) |
6164 | { | |
6165 | gfc_error ("MODULE prefix at %C found outside of a module, " | |
6166 | "submodule, or interface"); | |
6167 | goto error; | |
6168 | } | |
6169 | ||
70112e2a PT |
6170 | current_attr.module_procedure = 1; |
6171 | found_prefix = true; | |
6172 | } | |
6173 | ||
e6c14898 DK |
6174 | if (!seen_type && ts != NULL |
6175 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6176 | && gfc_match_space () == MATCH_YES) | |
6177 | { | |
6de9cd9a | 6178 | |
e6c14898 DK |
6179 | seen_type = true; |
6180 | found_prefix = true; | |
6181 | } | |
6182 | ||
6183 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6184 | { | |
524af0d6 | 6185 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
6186 | goto error; |
6187 | ||
6188 | found_prefix = true; | |
6189 | } | |
6190 | ||
6191 | if (gfc_match ("pure% ") == MATCH_YES) | |
6192 | { | |
524af0d6 | 6193 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
6194 | goto error; |
6195 | ||
6196 | found_prefix = true; | |
6197 | } | |
6de9cd9a | 6198 | |
e6c14898 DK |
6199 | if (gfc_match ("recursive% ") == MATCH_YES) |
6200 | { | |
524af0d6 | 6201 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
6202 | goto error; |
6203 | ||
6204 | found_prefix = true; | |
6205 | } | |
6206 | ||
6207 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6208 | attribute but rather only prevents ELEMENTAL routines from being | |
6209 | automatically PURE. */ | |
6210 | if (gfc_match ("impure% ") == MATCH_YES) | |
6211 | { | |
524af0d6 | 6212 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
6213 | goto error; |
6214 | ||
6215 | seen_impure = true; | |
6216 | found_prefix = true; | |
6217 | } | |
6de9cd9a | 6218 | } |
e6c14898 | 6219 | while (found_prefix); |
6de9cd9a | 6220 | |
e6c14898 DK |
6221 | /* IMPURE and PURE must not both appear, of course. */ |
6222 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 6223 | { |
e6c14898 DK |
6224 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6225 | goto error; | |
6de9cd9a DN |
6226 | } |
6227 | ||
e6c14898 DK |
6228 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6229 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 6230 | { |
524af0d6 | 6231 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 6232 | goto error; |
6de9cd9a DN |
6233 | } |
6234 | ||
6235 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 6236 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 6237 | |
3df684e2 | 6238 | gfc_matching_prefix = false; |
6de9cd9a | 6239 | return MATCH_YES; |
f37e928c DK |
6240 | |
6241 | error: | |
3df684e2 DK |
6242 | gcc_assert (gfc_matching_prefix); |
6243 | gfc_matching_prefix = false; | |
f37e928c | 6244 | return MATCH_ERROR; |
6de9cd9a DN |
6245 | } |
6246 | ||
6247 | ||
1c8bcdf7 | 6248 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 6249 | |
524af0d6 | 6250 | static bool |
636dff67 | 6251 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 6252 | { |
6442a6f4 PT |
6253 | if (dest->module_procedure) |
6254 | { | |
6255 | if (current_attr.elemental) | |
6256 | dest->elemental = 1; | |
6257 | ||
6258 | if (current_attr.pure) | |
6259 | dest->pure = 1; | |
6260 | ||
6261 | if (current_attr.recursive) | |
6262 | dest->recursive = 1; | |
6263 | ||
6264 | /* Module procedures are unusual in that the 'dest' is copied from | |
6265 | the interface declaration. However, this is an oportunity to | |
6266 | check that the submodule declaration is compliant with the | |
6267 | interface. */ | |
6268 | if (dest->elemental && !current_attr.elemental) | |
6269 | { | |
6270 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6271 | "missing at %L", where); | |
6272 | return false; | |
6273 | } | |
6274 | ||
6275 | if (dest->pure && !current_attr.pure) | |
6276 | { | |
6277 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6278 | "missing at %L", where); | |
6279 | return false; | |
6280 | } | |
6281 | ||
6282 | if (dest->recursive && !current_attr.recursive) | |
6283 | { | |
6284 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6285 | "missing at %L", where); | |
6286 | return false; | |
6287 | } | |
6288 | ||
6289 | return true; | |
6290 | } | |
6de9cd9a | 6291 | |
524af0d6 JB |
6292 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6293 | return false; | |
6de9cd9a | 6294 | |
6442a6f4 PT |
6295 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6296 | return false; | |
6297 | ||
524af0d6 JB |
6298 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6299 | return false; | |
6de9cd9a | 6300 | |
524af0d6 | 6301 | return true; |
6de9cd9a DN |
6302 | } |
6303 | ||
6304 | ||
5bab4c96 PT |
6305 | /* Match a formal argument list or, if typeparam is true, a |
6306 | type_param_name_list. */ | |
6de9cd9a DN |
6307 | |
6308 | match | |
5bab4c96 PT |
6309 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6310 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6311 | { |
6312 | gfc_formal_arglist *head, *tail, *p, *q; | |
6313 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6314 | gfc_symbol *sym; | |
6315 | match m; | |
4668d6f9 | 6316 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6317 | |
6318 | head = tail = NULL; | |
6319 | ||
4668d6f9 PT |
6320 | /* Keep the interface formal argument list and null it so that the |
6321 | matching for the new declaration can be done. The numbers and | |
6322 | names of the arguments are checked here. The interface formal | |
6323 | arguments are retained in formal_arglist and the characteristics | |
6324 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6325 | in get_proc_name about the eventual need to copy the formal_arglist | |
6326 | and populate the formal namespace of the interface symbol. */ | |
6327 | if (progname->attr.module_procedure | |
6328 | && progname->attr.host_assoc) | |
6329 | { | |
6330 | formal = progname->formal; | |
6331 | progname->formal = NULL; | |
6332 | } | |
6333 | ||
6de9cd9a DN |
6334 | if (gfc_match_char ('(') != MATCH_YES) |
6335 | { | |
6336 | if (null_flag) | |
6337 | goto ok; | |
6338 | return MATCH_NO; | |
6339 | } | |
6340 | ||
6341 | if (gfc_match_char (')') == MATCH_YES) | |
0a524296 | 6342 | { |
84083a71 JW |
6343 | if (typeparam) |
6344 | { | |
6345 | gfc_error_now ("A type parameter list is required at %C"); | |
6346 | m = MATCH_ERROR; | |
6347 | goto cleanup; | |
6348 | } | |
6349 | else | |
6350 | goto ok; | |
6351 | } | |
6de9cd9a DN |
6352 | |
6353 | for (;;) | |
6354 | { | |
6355 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6356 | { |
6357 | sym = NULL; | |
276515e6 PT |
6358 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6359 | "Alternate-return argument at %C")) | |
9362a03b JW |
6360 | { |
6361 | m = MATCH_ERROR; | |
6362 | goto cleanup; | |
6363 | } | |
276515e6 PT |
6364 | else if (typeparam) |
6365 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6366 | } |
6de9cd9a DN |
6367 | else |
6368 | { | |
6369 | m = gfc_match_name (name); | |
6370 | if (m != MATCH_YES) | |
276515e6 PT |
6371 | { |
6372 | if(typeparam) | |
6373 | gfc_error_now ("A parameter name is required at %C"); | |
6374 | goto cleanup; | |
6375 | } | |
6de9cd9a | 6376 | |
5bab4c96 PT |
6377 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6378 | goto cleanup; | |
6379 | else if (typeparam | |
6380 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6381 | goto cleanup; |
6382 | } | |
6383 | ||
6384 | p = gfc_get_formal_arglist (); | |
6385 | ||
6386 | if (head == NULL) | |
6387 | head = tail = p; | |
6388 | else | |
6389 | { | |
6390 | tail->next = p; | |
6391 | tail = p; | |
6392 | } | |
6393 | ||
6394 | tail->sym = sym; | |
6395 | ||
6396 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6397 | dummy procedure. We don't apply these attributes to formal |
6398 | arguments of statement functions. */ | |
6de9cd9a | 6399 | if (sym != NULL && !st_flag |
524af0d6 JB |
6400 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6401 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6402 | { |
6403 | m = MATCH_ERROR; | |
6404 | goto cleanup; | |
6405 | } | |
6406 | ||
6407 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6408 | so check for it explicitly. After the statement is accepted, |
6409 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6410 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6411 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6412 | { | |
c4100eae | 6413 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6414 | sym->name); |
6415 | m = MATCH_ERROR; | |
6416 | goto cleanup; | |
6417 | } | |
6418 | ||
6419 | if (gfc_match_char (')') == MATCH_YES) | |
6420 | goto ok; | |
6421 | ||
6422 | m = gfc_match_char (','); | |
6423 | if (m != MATCH_YES) | |
6424 | { | |
de624bee PT |
6425 | if (typeparam) |
6426 | gfc_error_now ("Expected parameter list in type declaration " | |
6427 | "at %C"); | |
6428 | else | |
6429 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6430 | goto cleanup; |
6431 | } | |
6432 | } | |
6433 | ||
6434 | ok: | |
6435 | /* Check for duplicate symbols in the formal argument list. */ | |
6436 | if (head != NULL) | |
6437 | { | |
6438 | for (p = head; p->next; p = p->next) | |
6439 | { | |
6440 | if (p->sym == NULL) | |
6441 | continue; | |
6442 | ||
6443 | for (q = p->next; q; q = q->next) | |
6444 | if (p->sym == q->sym) | |
6445 | { | |
de624bee PT |
6446 | if (typeparam) |
6447 | gfc_error_now ("Duplicate name %qs in parameter " | |
6448 | "list at %C", p->sym->name); | |
6449 | else | |
6450 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6451 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6452 | |
6453 | m = MATCH_ERROR; | |
6454 | goto cleanup; | |
6455 | } | |
6456 | } | |
6457 | } | |
6458 | ||
524af0d6 | 6459 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6460 | { |
6461 | m = MATCH_ERROR; | |
6462 | goto cleanup; | |
6463 | } | |
6464 | ||
e9d9b48d PT |
6465 | /* gfc_error_now used in following and return with MATCH_YES because |
6466 | doing otherwise results in a cascade of extraneous errors and in | |
6467 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6468 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6469 | { |
0ef5fbc1 PT |
6470 | bool arg_count_mismatch = false; |
6471 | ||
6472 | if (!formal && head) | |
6473 | arg_count_mismatch = true; | |
6474 | ||
6475 | /* Abbreviated module procedure declaration is not meant to have any | |
6476 | formal arguments! */ | |
e9d9b48d | 6477 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6478 | arg_count_mismatch = true; |
6479 | ||
4668d6f9 PT |
6480 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6481 | { | |
6482 | if ((p->next != NULL && q->next == NULL) | |
6483 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6484 | arg_count_mismatch = true; |
4668d6f9 PT |
6485 | else if ((p->sym == NULL && q->sym == NULL) |
6486 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6487 | continue; | |
6488 | else | |
6489 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6490 | "argument names (%s/%s) at %C", | |
6491 | p->sym->name, q->sym->name); | |
6492 | } | |
0ef5fbc1 PT |
6493 | |
6494 | if (arg_count_mismatch) | |
6495 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6496 | "formal arguments at %C"); | |
4668d6f9 PT |
6497 | } |
6498 | ||
6de9cd9a DN |
6499 | return MATCH_YES; |
6500 | ||
6501 | cleanup: | |
6502 | gfc_free_formal_arglist (head); | |
6503 | return m; | |
6504 | } | |
6505 | ||
6506 | ||
6507 | /* Match a RESULT specification following a function declaration or | |
6508 | ENTRY statement. Also matches the end-of-statement. */ | |
6509 | ||
6510 | static match | |
66e4ab31 | 6511 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6512 | { |
6513 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6514 | gfc_symbol *r; | |
6515 | match m; | |
6516 | ||
6517 | if (gfc_match (" result (") != MATCH_YES) | |
6518 | return MATCH_NO; | |
6519 | ||
6520 | m = gfc_match_name (name); | |
6521 | if (m != MATCH_YES) | |
6522 | return m; | |
6523 | ||
a8b3b0b6 CR |
6524 | /* Get the right paren, and that's it because there could be the |
6525 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6526 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6527 | { |
a8b3b0b6 | 6528 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6529 | return MATCH_ERROR; |
6530 | } | |
6531 | ||
6532 | if (strcmp (function->name, name) == 0) | |
6533 | { | |
636dff67 | 6534 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6535 | return MATCH_ERROR; |
6536 | } | |
6537 | ||
6538 | if (gfc_get_symbol (name, NULL, &r)) | |
6539 | return MATCH_ERROR; | |
6540 | ||
524af0d6 | 6541 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6542 | return MATCH_ERROR; |
6543 | ||
6544 | *result = r; | |
6545 | ||
6546 | return MATCH_YES; | |
6547 | } | |
6548 | ||
6549 | ||
a8b3b0b6 CR |
6550 | /* Match a function suffix, which could be a combination of a result |
6551 | clause and BIND(C), either one, or neither. The draft does not | |
6552 | require them to come in a specific order. */ | |
6553 | ||
6554 | match | |
6555 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6556 | { | |
6557 | match is_bind_c; /* Found bind(c). */ | |
6558 | match is_result; /* Found result clause. */ | |
6559 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6560 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6561 | bool allow_binding_name; |
a8b3b0b6 CR |
6562 | |
6563 | /* Initialize to having found nothing. */ | |
6564 | found_match = MATCH_NO; | |
f5acf0f2 | 6565 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6566 | is_result = MATCH_NO; |
6567 | ||
6568 | /* Get the next char to narrow between result and bind(c). */ | |
6569 | gfc_gobble_whitespace (); | |
8fc541d3 | 6570 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6571 | |
1eabf70a TB |
6572 | /* C binding names are not allowed for internal procedures. */ |
6573 | if (gfc_current_state () == COMP_CONTAINS | |
6574 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6575 | allow_binding_name = false; | |
6576 | else | |
6577 | allow_binding_name = true; | |
6578 | ||
a8b3b0b6 CR |
6579 | switch (peek_char) |
6580 | { | |
6581 | case 'r': | |
6582 | /* Look for result clause. */ | |
6583 | is_result = match_result (sym, result); | |
6584 | if (is_result == MATCH_YES) | |
6585 | { | |
6586 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6587 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6588 | /* We've found the result clause and possibly bind(c). */ |
6589 | found_match = MATCH_YES; | |
6590 | } | |
6591 | else | |
6592 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6593 | found_match = is_result; |
a8b3b0b6 CR |
6594 | break; |
6595 | case 'b': | |
6596 | /* Look for bind(c) first. */ | |
1eabf70a | 6597 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6598 | if (is_bind_c == MATCH_YES) |
6599 | { | |
6600 | /* Now see if a result clause followed it. */ | |
6601 | is_result = match_result (sym, result); | |
6602 | found_match = MATCH_YES; | |
6603 | } | |
6604 | else | |
6605 | { | |
6606 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6607 | found_match = MATCH_ERROR; | |
6608 | } | |
6609 | break; | |
6610 | default: | |
6611 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6612 | found_match = MATCH_ERROR; | |
6613 | break; | |
6614 | } | |
6615 | ||
a8b3b0b6 | 6616 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6617 | { |
1eabf70a | 6618 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6619 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6620 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6621 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6622 | "at %L may not be specified for an internal " | |
6623 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6624 | return MATCH_ERROR; |
6625 | ||
524af0d6 | 6626 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6627 | return MATCH_ERROR; |
6628 | } | |
f5acf0f2 | 6629 | |
a8b3b0b6 CR |
6630 | return found_match; |
6631 | } | |
6632 | ||
6633 | ||
3070bab4 JW |
6634 | /* Procedure pointer return value without RESULT statement: |
6635 | Add "hidden" result variable named "ppr@". */ | |
6636 | ||
524af0d6 | 6637 | static bool |
3070bab4 JW |
6638 | add_hidden_procptr_result (gfc_symbol *sym) |
6639 | { | |
6640 | bool case1,case2; | |
6641 | ||
6642 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6643 | return false; |
3070bab4 JW |
6644 | |
6645 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6646 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6647 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6648 | && sym->attr.external; | |
6649 | /* Second usage case: INTERFACE statements. */ | |
6650 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6651 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6652 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6653 | ||
6654 | if (case1 || case2) | |
6655 | { | |
6656 | gfc_symtree *stree; | |
6657 | if (case1) | |
08a6b8e0 | 6658 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
5433e401 | 6659 | else |
c73b6478 JW |
6660 | { |
6661 | gfc_symtree *st2; | |
08a6b8e0 | 6662 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6663 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6664 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6665 | stree->n.sym->refs++; |
c73b6478 | 6666 | } |
3070bab4 JW |
6667 | sym->result = stree->n.sym; |
6668 | ||
6669 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6670 | sym->result->attr.pointer = sym->attr.pointer; | |
6671 | sym->result->attr.external = sym->attr.external; | |
6672 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6673 | sym->result->ts = sym->ts; |
3070bab4 JW |
6674 | sym->attr.proc_pointer = 0; |
6675 | sym->attr.pointer = 0; | |
6676 | sym->attr.external = 0; | |
6677 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6678 | { | |
6679 | sym->result->attr.pointer = 0; | |
6680 | sym->result->attr.proc_pointer = 1; | |
6681 | } | |
6682 | ||
6683 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6684 | } | |
6685 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6686 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6687 | && sym->result && sym->result != sym && sym->result->attr.external | |
6688 | && sym == gfc_current_ns->proc_name | |
6689 | && sym == sym->result->ns->proc_name | |
6690 | && strcmp ("ppr@", sym->result->name) == 0) | |
6691 | { | |
6692 | sym->result->attr.proc_pointer = 1; | |
6693 | sym->attr.pointer = 0; | |
524af0d6 | 6694 | return true; |
3070bab4 JW |
6695 | } |
6696 | else | |
524af0d6 | 6697 | return false; |
3070bab4 JW |
6698 | } |
6699 | ||
6700 | ||
713485cc JW |
6701 | /* Match the interface for a PROCEDURE declaration, |
6702 | including brackets (R1212). */ | |
69773742 JW |
6703 | |
6704 | static match | |
713485cc | 6705 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6706 | { |
6707 | match m; | |
3276e0b3 | 6708 | gfc_symtree *st; |
69773742 | 6709 | locus old_loc, entry_loc; |
3276e0b3 PT |
6710 | gfc_namespace *old_ns = gfc_current_ns; |
6711 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6712 | |
3276e0b3 | 6713 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6714 | gfc_clear_ts (¤t_ts); |
6715 | ||
6716 | if (gfc_match (" (") != MATCH_YES) | |
6717 | { | |
6718 | gfc_current_locus = entry_loc; | |
6719 | return MATCH_NO; | |
6720 | } | |
6721 | ||
6722 | /* Get the type spec. for the procedure interface. */ | |
6723 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6724 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6725 | gfc_gobble_whitespace (); |
8fc541d3 | 6726 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6727 | goto got_ts; |
6728 | ||
6729 | if (m == MATCH_ERROR) | |
6730 | return m; | |
6731 | ||
3276e0b3 | 6732 | /* Procedure interface is itself a procedure. */ |
69773742 | 6733 | gfc_current_locus = old_loc; |
3276e0b3 | 6734 | m = gfc_match_name (name); |
69773742 | 6735 | |
3276e0b3 PT |
6736 | /* First look to see if it is already accessible in the current |
6737 | namespace because it is use associated or contained. */ | |
6738 | st = NULL; | |
6739 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6740 | return MATCH_ERROR; | |
6741 | ||
6742 | /* If it is still not found, then try the parent namespace, if it | |
6743 | exists and create the symbol there if it is still not found. */ | |
6744 | if (gfc_current_ns->parent) | |
6745 | gfc_current_ns = gfc_current_ns->parent; | |
6746 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6747 | return MATCH_ERROR; | |
6748 | ||
6749 | gfc_current_ns = old_ns; | |
6750 | *proc_if = st->n.sym; | |
69773742 | 6751 | |
713485cc | 6752 | if (*proc_if) |
69773742 | 6753 | { |
713485cc | 6754 | (*proc_if)->refs++; |
bb343a6c TB |
6755 | /* Resolve interface if possible. That way, attr.procedure is only set |
6756 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6757 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6758 | while ((*proc_if)->ts.interface |
6759 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6760 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6761 | |
0e8d854e JW |
6762 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6763 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6764 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6765 | (*proc_if)->name, NULL)) |
0e8d854e | 6766 | return MATCH_ERROR; |
69773742 JW |
6767 | } |
6768 | ||
6769 | got_ts: | |
69773742 JW |
6770 | if (gfc_match (" )") != MATCH_YES) |
6771 | { | |
6772 | gfc_current_locus = entry_loc; | |
6773 | return MATCH_NO; | |
6774 | } | |
6775 | ||
713485cc JW |
6776 | return MATCH_YES; |
6777 | } | |
6778 | ||
6779 | ||
6780 | /* Match a PROCEDURE declaration (R1211). */ | |
6781 | ||
6782 | static match | |
6783 | match_procedure_decl (void) | |
6784 | { | |
6785 | match m; | |
6786 | gfc_symbol *sym, *proc_if = NULL; | |
6787 | int num; | |
6788 | gfc_expr *initializer = NULL; | |
6789 | ||
1cc0e193 | 6790 | /* Parse interface (with brackets). */ |
713485cc JW |
6791 | m = match_procedure_interface (&proc_if); |
6792 | if (m != MATCH_YES) | |
6793 | return m; | |
6794 | ||
6795 | /* Parse attributes (with colons). */ | |
69773742 JW |
6796 | m = match_attr_spec(); |
6797 | if (m == MATCH_ERROR) | |
6798 | return MATCH_ERROR; | |
6799 | ||
0859be17 TB |
6800 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6801 | { | |
6802 | current_attr.is_bind_c = 1; | |
6803 | has_name_equals = 0; | |
6804 | curr_binding_label = NULL; | |
6805 | } | |
6806 | ||
69773742 JW |
6807 | /* Get procedure symbols. */ |
6808 | for(num=1;;num++) | |
6809 | { | |
69773742 JW |
6810 | m = gfc_match_symbol (&sym, 0); |
6811 | if (m == MATCH_NO) | |
6812 | goto syntax; | |
6813 | else if (m == MATCH_ERROR) | |
6814 | return m; | |
6815 | ||
6816 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6817 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6818 | return MATCH_ERROR; |
6819 | ||
6820 | if (sym->attr.is_bind_c) | |
6821 | { | |
6822 | /* Check for C1218. */ | |
6823 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6824 | { | |
6825 | gfc_error ("BIND(C) attribute at %C requires " | |
6826 | "an interface with BIND(C)"); | |
6827 | return MATCH_ERROR; | |
6828 | } | |
6829 | /* Check for C1217. */ | |
6830 | if (has_name_equals && sym->attr.pointer) | |
6831 | { | |
6832 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6833 | "POINTER attribute at %C"); | |
6834 | return MATCH_ERROR; | |
6835 | } | |
6836 | if (has_name_equals && sym->attr.dummy) | |
6837 | { | |
6838 | gfc_error ("Dummy procedure at %C may not have " | |
6839 | "BIND(C) attribute with NAME"); | |
6840 | return MATCH_ERROR; | |
6841 | } | |
6842 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6843 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6844 | return MATCH_ERROR; |
6845 | } | |
6846 | ||
524af0d6 | 6847 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6848 | return MATCH_ERROR; |
3070bab4 | 6849 | |
524af0d6 | 6850 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6851 | sym = sym->result; |
6852 | ||
524af0d6 | 6853 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6854 | return MATCH_ERROR; |
6855 | ||
6856 | /* Set interface. */ | |
6857 | if (proc_if != NULL) | |
6cc309c9 | 6858 | { |
1d146030 JW |
6859 | if (sym->ts.type != BT_UNKNOWN) |
6860 | { | |
c4100eae | 6861 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6862 | sym->name, &gfc_current_locus, |
6863 | gfc_basic_typename (sym->ts.type)); | |
6864 | return MATCH_ERROR; | |
6865 | } | |
32d99e68 | 6866 | sym->ts.interface = proc_if; |
6cc309c9 | 6867 | sym->attr.untyped = 1; |
c73b6478 | 6868 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6869 | } |
69773742 JW |
6870 | else if (current_ts.type != BT_UNKNOWN) |
6871 | { | |
524af0d6 | 6872 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6873 | return MATCH_ERROR; |
32d99e68 JW |
6874 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6875 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6876 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6877 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6878 | sym->attr.function = 1; |
c73b6478 | 6879 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6880 | } |
6881 | ||
8fb74da4 JW |
6882 | if (gfc_match (" =>") == MATCH_YES) |
6883 | { | |
6884 | if (!current_attr.pointer) | |
6885 | { | |
6886 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6887 | m = MATCH_ERROR; | |
6888 | goto cleanup; | |
6889 | } | |
6890 | ||
80f95228 | 6891 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6892 | if (m != MATCH_YES) |
6893 | goto cleanup; | |
6894 | ||
524af0d6 | 6895 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6896 | goto cleanup; |
6897 | ||
6898 | } | |
6899 | ||
69773742 JW |
6900 | if (gfc_match_eos () == MATCH_YES) |
6901 | return MATCH_YES; | |
6902 | if (gfc_match_char (',') != MATCH_YES) | |
6903 | goto syntax; | |
6904 | } | |
6905 | ||
6906 | syntax: | |
6907 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6908 | return MATCH_ERROR; | |
8fb74da4 JW |
6909 | |
6910 | cleanup: | |
6911 | /* Free stuff up and return. */ | |
6912 | gfc_free_expr (initializer); | |
6913 | return m; | |
69773742 JW |
6914 | } |
6915 | ||
6916 | ||
713485cc JW |
6917 | static match |
6918 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6919 | ||
6920 | ||
6921 | /* Match a procedure pointer component declaration (R445). */ | |
6922 | ||
6923 | static match | |
6924 | match_ppc_decl (void) | |
6925 | { | |
6926 | match m; | |
6927 | gfc_symbol *proc_if = NULL; | |
6928 | gfc_typespec ts; | |
6929 | int num; | |
6930 | gfc_component *c; | |
6931 | gfc_expr *initializer = NULL; | |
6932 | gfc_typebound_proc* tb; | |
6933 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6934 | ||
6935 | /* Parse interface (with brackets). */ | |
6936 | m = match_procedure_interface (&proc_if); | |
6937 | if (m != MATCH_YES) | |
6938 | goto syntax; | |
6939 | ||
6940 | /* Parse attributes. */ | |
6941 | tb = XCNEW (gfc_typebound_proc); | |
6942 | tb->where = gfc_current_locus; | |
6943 | m = match_binding_attributes (tb, false, true); | |
6944 | if (m == MATCH_ERROR) | |
6945 | return m; | |
6946 | ||
713485cc JW |
6947 | gfc_clear_attr (¤t_attr); |
6948 | current_attr.procedure = 1; | |
6949 | current_attr.proc_pointer = 1; | |
6950 | current_attr.access = tb->access; | |
6951 | current_attr.flavor = FL_PROCEDURE; | |
6952 | ||
6953 | /* Match the colons (required). */ | |
6954 | if (gfc_match (" ::") != MATCH_YES) | |
6955 | { | |
a4d9b221 | 6956 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6957 | return MATCH_ERROR; |
6958 | } | |
6959 | ||
6960 | /* Check for C450. */ | |
6961 | if (!tb->nopass && proc_if == NULL) | |
6962 | { | |
6963 | gfc_error("NOPASS or explicit interface required at %C"); | |
6964 | return MATCH_ERROR; | |
6965 | } | |
6966 | ||
524af0d6 | 6967 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6968 | return MATCH_ERROR; |
6969 | ||
713485cc JW |
6970 | /* Match PPC names. */ |
6971 | ts = current_ts; | |
6972 | for(num=1;;num++) | |
6973 | { | |
6974 | m = gfc_match_name (name); | |
6975 | if (m == MATCH_NO) | |
6976 | goto syntax; | |
6977 | else if (m == MATCH_ERROR) | |
6978 | return m; | |
6979 | ||
524af0d6 | 6980 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6981 | return MATCH_ERROR; |
6982 | ||
6983 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6984 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6985 | return MATCH_ERROR; |
6986 | ||
524af0d6 | 6987 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6988 | return MATCH_ERROR; |
6989 | ||
524af0d6 | 6990 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6991 | return MATCH_ERROR; |
6992 | ||
2be03814 TB |
6993 | if (num == 1) |
6994 | c->tb = tb; | |
6995 | else | |
6996 | { | |
6997 | c->tb = XCNEW (gfc_typebound_proc); | |
6998 | c->tb->where = gfc_current_locus; | |
6999 | *c->tb = *tb; | |
7000 | } | |
90661f26 | 7001 | |
713485cc JW |
7002 | /* Set interface. */ |
7003 | if (proc_if != NULL) | |
7004 | { | |
7005 | c->ts.interface = proc_if; | |
7006 | c->attr.untyped = 1; | |
7007 | c->attr.if_source = IFSRC_IFBODY; | |
7008 | } | |
7009 | else if (ts.type != BT_UNKNOWN) | |
7010 | { | |
7011 | c->ts = ts; | |
7012 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 7013 | c->ts.interface->result = c->ts.interface; |
713485cc | 7014 | c->ts.interface->ts = ts; |
d91909c0 | 7015 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 7016 | c->ts.interface->attr.function = 1; |
d91909c0 | 7017 | c->attr.function = 1; |
713485cc JW |
7018 | c->attr.if_source = IFSRC_UNKNOWN; |
7019 | } | |
7020 | ||
7021 | if (gfc_match (" =>") == MATCH_YES) | |
7022 | { | |
80f95228 | 7023 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
7024 | if (m != MATCH_YES) |
7025 | { | |
7026 | gfc_free_expr (initializer); | |
7027 | return m; | |
7028 | } | |
7029 | c->initializer = initializer; | |
7030 | } | |
7031 | ||
7032 | if (gfc_match_eos () == MATCH_YES) | |
7033 | return MATCH_YES; | |
7034 | if (gfc_match_char (',') != MATCH_YES) | |
7035 | goto syntax; | |
7036 | } | |
7037 | ||
7038 | syntax: | |
7039 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
7040 | return MATCH_ERROR; | |
7041 | } | |
7042 | ||
7043 | ||
69773742 JW |
7044 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
7045 | ||
7046 | static match | |
7047 | match_procedure_in_interface (void) | |
7048 | { | |
7049 | match m; | |
7050 | gfc_symbol *sym; | |
7051 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 7052 | locus old_locus; |
69773742 JW |
7053 | |
7054 | if (current_interface.type == INTERFACE_NAMELESS | |
7055 | || current_interface.type == INTERFACE_ABSTRACT) | |
7056 | { | |
7057 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
7058 | return MATCH_ERROR; | |
7059 | } | |
7060 | ||
a6fcd41a TB |
7061 | /* Check if the F2008 optional double colon appears. */ |
7062 | gfc_gobble_whitespace (); | |
7063 | old_locus = gfc_current_locus; | |
7064 | if (gfc_match ("::") == MATCH_YES) | |
7065 | { | |
524af0d6 JB |
7066 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7067 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
7068 | return MATCH_ERROR; |
7069 | } | |
7070 | else | |
7071 | gfc_current_locus = old_locus; | |
7072 | ||
69773742 JW |
7073 | for(;;) |
7074 | { | |
7075 | m = gfc_match_name (name); | |
7076 | if (m == MATCH_NO) | |
7077 | goto syntax; | |
7078 | else if (m == MATCH_ERROR) | |
7079 | return m; | |
7080 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
7081 | return MATCH_ERROR; | |
7082 | ||
524af0d6 | 7083 | if (!gfc_add_interface (sym)) |
69773742 JW |
7084 | return MATCH_ERROR; |
7085 | ||
69773742 JW |
7086 | if (gfc_match_eos () == MATCH_YES) |
7087 | break; | |
7088 | if (gfc_match_char (',') != MATCH_YES) | |
7089 | goto syntax; | |
7090 | } | |
7091 | ||
7092 | return MATCH_YES; | |
7093 | ||
7094 | syntax: | |
7095 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7096 | return MATCH_ERROR; | |
7097 | } | |
7098 | ||
7099 | ||
7100 | /* General matcher for PROCEDURE declarations. */ | |
7101 | ||
30b608eb DK |
7102 | static match match_procedure_in_type (void); |
7103 | ||
69773742 JW |
7104 | match |
7105 | gfc_match_procedure (void) | |
7106 | { | |
7107 | match m; | |
7108 | ||
7109 | switch (gfc_current_state ()) | |
7110 | { | |
7111 | case COMP_NONE: | |
7112 | case COMP_PROGRAM: | |
7113 | case COMP_MODULE: | |
4668d6f9 | 7114 | case COMP_SUBMODULE: |
69773742 JW |
7115 | case COMP_SUBROUTINE: |
7116 | case COMP_FUNCTION: | |
3547d57e | 7117 | case COMP_BLOCK: |
69773742 JW |
7118 | m = match_procedure_decl (); |
7119 | break; | |
7120 | case COMP_INTERFACE: | |
7121 | m = match_procedure_in_interface (); | |
7122 | break; | |
7123 | case COMP_DERIVED: | |
713485cc JW |
7124 | m = match_ppc_decl (); |
7125 | break; | |
30b608eb DK |
7126 | case COMP_DERIVED_CONTAINS: |
7127 | m = match_procedure_in_type (); | |
7128 | break; | |
69773742 JW |
7129 | default: |
7130 | return MATCH_NO; | |
7131 | } | |
7132 | ||
7133 | if (m != MATCH_YES) | |
7134 | return m; | |
7135 | ||
524af0d6 | 7136 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
7137 | return MATCH_ERROR; |
7138 | ||
7139 | return m; | |
7140 | } | |
7141 | ||
7142 | ||
c3005b0f DK |
7143 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7144 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7145 | parser-state-stack to find out whether we're in a module. */ | |
7146 | ||
7147 | static void | |
73e42eef | 7148 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
7149 | { |
7150 | bool in_module; | |
7151 | ||
7152 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
7153 | && (gfc_state_stack->previous->state == COMP_MODULE |
7154 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
7155 | |
7156 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7157 | } | |
7158 | ||
7159 | ||
6de9cd9a DN |
7160 | /* Match a function declaration. */ |
7161 | ||
7162 | match | |
7163 | gfc_match_function_decl (void) | |
7164 | { | |
7165 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7166 | gfc_symbol *sym, *result; | |
7167 | locus old_loc; | |
7168 | match m; | |
a8b3b0b6 | 7169 | match suffix_match; |
f5acf0f2 | 7170 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
7171 | |
7172 | if (gfc_current_state () != COMP_NONE | |
7173 | && gfc_current_state () != COMP_INTERFACE | |
7174 | && gfc_current_state () != COMP_CONTAINS) | |
7175 | return MATCH_NO; | |
7176 | ||
7177 | gfc_clear_ts (¤t_ts); | |
7178 | ||
63645982 | 7179 | old_loc = gfc_current_locus; |
6de9cd9a | 7180 | |
1c8bcdf7 | 7181 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
7182 | if (m != MATCH_YES) |
7183 | { | |
63645982 | 7184 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7185 | return m; |
7186 | } | |
7187 | ||
7188 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7189 | { | |
63645982 | 7190 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7191 | return MATCH_NO; |
7192 | } | |
4668d6f9 | 7193 | |
1a492601 | 7194 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7195 | return MATCH_ERROR; |
3070bab4 | 7196 | |
524af0d6 | 7197 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7198 | sym = sym->result; |
7199 | ||
4668d6f9 PT |
7200 | if (current_attr.module_procedure) |
7201 | sym->attr.module_procedure = 1; | |
7202 | ||
6de9cd9a DN |
7203 | gfc_new_block = sym; |
7204 | ||
7205 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7206 | if (m == MATCH_NO) | |
2b9a33ae TS |
7207 | { |
7208 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 7209 | "definition at %C"); |
2b9a33ae TS |
7210 | m = MATCH_ERROR; |
7211 | goto cleanup; | |
7212 | } | |
6de9cd9a DN |
7213 | else if (m == MATCH_ERROR) |
7214 | goto cleanup; | |
7215 | ||
7216 | result = NULL; | |
7217 | ||
a8b3b0b6 CR |
7218 | /* According to the draft, the bind(c) and result clause can |
7219 | come in either order after the formal_arg_list (i.e., either | |
7220 | can be first, both can exist together or by themselves or neither | |
7221 | one). Therefore, the match_result can't match the end of the | |
7222 | string, and check for the bind(c) or result clause in either order. */ | |
7223 | found_match = gfc_match_eos (); | |
7224 | ||
7225 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7226 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7227 | not allowed for procedures. */ | |
7228 | if (sym->attr.is_bind_c == 1) | |
7229 | { | |
7230 | sym->attr.is_bind_c = 0; | |
7231 | if (sym->old_symbol != NULL) | |
7232 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7233 | "variables or common blocks", | |
7234 | &(sym->old_symbol->declared_at)); | |
7235 | else | |
7236 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7237 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
7238 | } |
7239 | ||
a8b3b0b6 | 7240 | if (found_match != MATCH_YES) |
6de9cd9a | 7241 | { |
a8b3b0b6 CR |
7242 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7243 | suffix_match = gfc_match_suffix (sym, &result); | |
7244 | if (suffix_match == MATCH_YES) | |
7245 | /* Need to get the eos now. */ | |
7246 | found_match = gfc_match_eos (); | |
7247 | else | |
7248 | found_match = suffix_match; | |
6de9cd9a DN |
7249 | } |
7250 | ||
a8b3b0b6 CR |
7251 | if(found_match != MATCH_YES) |
7252 | m = MATCH_ERROR; | |
6de9cd9a DN |
7253 | else |
7254 | { | |
a8b3b0b6 CR |
7255 | /* Make changes to the symbol. */ |
7256 | m = MATCH_ERROR; | |
f5acf0f2 | 7257 | |
524af0d6 | 7258 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 7259 | goto cleanup; |
f5acf0f2 | 7260 | |
70112e2a | 7261 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 7262 | goto cleanup; |
6de9cd9a | 7263 | |
70112e2a PT |
7264 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7265 | { | |
7266 | if(!sym->attr.module_procedure) | |
7267 | goto cleanup; | |
7268 | else | |
7269 | gfc_error_check (); | |
7270 | } | |
7271 | ||
a99d95a2 | 7272 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 7273 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
7274 | sym->declared_at = old_loc; |
7275 | if (current_ts.type != BT_UNKNOWN) | |
7276 | current_ts.kind = -1; | |
7277 | else | |
7278 | current_ts.kind = 0; | |
1c8bcdf7 | 7279 | |
a8b3b0b6 CR |
7280 | if (result == NULL) |
7281 | { | |
6de7294f | 7282 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7283 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7284 | goto cleanup; |
a8b3b0b6 CR |
7285 | sym->result = sym; |
7286 | } | |
7287 | else | |
7288 | { | |
6de7294f | 7289 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7290 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7291 | goto cleanup; |
a8b3b0b6 CR |
7292 | sym->result = result; |
7293 | } | |
7294 | ||
c3005b0f | 7295 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 7296 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 7297 | |
a8b3b0b6 CR |
7298 | return MATCH_YES; |
7299 | } | |
6de9cd9a DN |
7300 | |
7301 | cleanup: | |
63645982 | 7302 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7303 | return m; |
7304 | } | |
7305 | ||
636dff67 SK |
7306 | |
7307 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7308 | pass the name of the entry, rather than the gfc_current_block name, and | |
7309 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7310 | |
7311 | static bool | |
3a43b5b3 TB |
7312 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7313 | locus *where) | |
68ea355b PT |
7314 | { |
7315 | gfc_gsymbol *s; | |
32e8bb8e | 7316 | enum gfc_symbol_type type; |
68ea355b | 7317 | |
7389bce6 | 7318 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7319 | |
f11de7c5 TB |
7320 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7321 | name is a global identifier. */ | |
7322 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7323 | { |
55b9c612 | 7324 | s = gfc_get_gsymbol (name, false); |
f11de7c5 TB |
7325 | |
7326 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7327 | { | |
3a43b5b3 | 7328 | gfc_global_used (s, where); |
f11de7c5 TB |
7329 | return false; |
7330 | } | |
7331 | else | |
7332 | { | |
7333 | s->type = type; | |
77f8682b | 7334 | s->sym_name = name; |
3a43b5b3 | 7335 | s->where = *where; |
f11de7c5 TB |
7336 | s->defined = 1; |
7337 | s->ns = gfc_current_ns; | |
7338 | } | |
68ea355b | 7339 | } |
f11de7c5 TB |
7340 | |
7341 | /* Don't add the symbol multiple times. */ | |
7342 | if (binding_label | |
7343 | && (!gfc_notification_std (GFC_STD_F2008) | |
7344 | || strcmp (name, binding_label) != 0)) | |
7345 | { | |
55b9c612 | 7346 | s = gfc_get_gsymbol (binding_label, true); |
f11de7c5 TB |
7347 | |
7348 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7349 | { | |
3a43b5b3 | 7350 | gfc_global_used (s, where); |
f11de7c5 TB |
7351 | return false; |
7352 | } | |
7353 | else | |
7354 | { | |
7355 | s->type = type; | |
77f8682b | 7356 | s->sym_name = name; |
f11de7c5 | 7357 | s->binding_label = binding_label; |
3a43b5b3 | 7358 | s->where = *where; |
f11de7c5 TB |
7359 | s->defined = 1; |
7360 | s->ns = gfc_current_ns; | |
7361 | } | |
7362 | } | |
7363 | ||
7364 | return true; | |
68ea355b | 7365 | } |
6de9cd9a | 7366 | |
636dff67 | 7367 | |
6de9cd9a DN |
7368 | /* Match an ENTRY statement. */ |
7369 | ||
7370 | match | |
7371 | gfc_match_entry (void) | |
7372 | { | |
3d79abbd PB |
7373 | gfc_symbol *proc; |
7374 | gfc_symbol *result; | |
7375 | gfc_symbol *entry; | |
6de9cd9a DN |
7376 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7377 | gfc_compile_state state; | |
7378 | match m; | |
3d79abbd | 7379 | gfc_entry_list *el; |
c96cfa49 | 7380 | locus old_loc; |
1a492601 | 7381 | bool module_procedure; |
bc3e7a8c TB |
7382 | char peek_char; |
7383 | match is_bind_c; | |
6de9cd9a DN |
7384 | |
7385 | m = gfc_match_name (name); | |
7386 | if (m != MATCH_YES) | |
7387 | return m; | |
7388 | ||
524af0d6 | 7389 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7390 | return MATCH_ERROR; |
7391 | ||
3d79abbd | 7392 | state = gfc_current_state (); |
4c93c95a | 7393 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7394 | { |
4c93c95a FXC |
7395 | switch (state) |
7396 | { | |
7397 | case COMP_PROGRAM: | |
7398 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7399 | break; | |
7400 | case COMP_MODULE: | |
7401 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7402 | break; | |
4668d6f9 PT |
7403 | case COMP_SUBMODULE: |
7404 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7405 | break; | |
4c93c95a | 7406 | case COMP_BLOCK_DATA: |
636dff67 SK |
7407 | gfc_error ("ENTRY statement at %C cannot appear within " |
7408 | "a BLOCK DATA"); | |
4c93c95a FXC |
7409 | break; |
7410 | case COMP_INTERFACE: | |
636dff67 SK |
7411 | gfc_error ("ENTRY statement at %C cannot appear within " |
7412 | "an INTERFACE"); | |
4c93c95a | 7413 | break; |
f6288c24 FR |
7414 | case COMP_STRUCTURE: |
7415 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7416 | "a STRUCTURE block"); | |
7417 | break; | |
4c93c95a | 7418 | case COMP_DERIVED: |
636dff67 SK |
7419 | gfc_error ("ENTRY statement at %C cannot appear within " |
7420 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7421 | break; |
7422 | case COMP_IF: | |
636dff67 SK |
7423 | gfc_error ("ENTRY statement at %C cannot appear within " |
7424 | "an IF-THEN block"); | |
4c93c95a FXC |
7425 | break; |
7426 | case COMP_DO: | |
8c6a85e3 | 7427 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7428 | gfc_error ("ENTRY statement at %C cannot appear within " |
7429 | "a DO block"); | |
4c93c95a FXC |
7430 | break; |
7431 | case COMP_SELECT: | |
636dff67 SK |
7432 | gfc_error ("ENTRY statement at %C cannot appear within " |
7433 | "a SELECT block"); | |
4c93c95a FXC |
7434 | break; |
7435 | case COMP_FORALL: | |
636dff67 SK |
7436 | gfc_error ("ENTRY statement at %C cannot appear within " |
7437 | "a FORALL block"); | |
4c93c95a FXC |
7438 | break; |
7439 | case COMP_WHERE: | |
636dff67 SK |
7440 | gfc_error ("ENTRY statement at %C cannot appear within " |
7441 | "a WHERE block"); | |
4c93c95a FXC |
7442 | break; |
7443 | case COMP_CONTAINS: | |
636dff67 SK |
7444 | gfc_error ("ENTRY statement at %C cannot appear within " |
7445 | "a contained subprogram"); | |
4c93c95a FXC |
7446 | break; |
7447 | default: | |
fce523bf | 7448 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7449 | } |
3d79abbd PB |
7450 | return MATCH_ERROR; |
7451 | } | |
7452 | ||
5f0ba745 SK |
7453 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7454 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7455 | { | |
7456 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7457 | return MATCH_ERROR; | |
7458 | } | |
7459 | ||
1a492601 | 7460 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7461 | && gfc_current_ns->parent->proc_name |
7462 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7463 | == FL_MODULE; | |
1a492601 | 7464 | |
3d79abbd PB |
7465 | if (gfc_current_ns->parent != NULL |
7466 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7467 | && !module_procedure) |
3d79abbd PB |
7468 | { |
7469 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7470 | "contained procedure"); | |
7471 | return MATCH_ERROR; | |
7472 | } | |
7473 | ||
1a492601 PT |
7474 | /* Module function entries need special care in get_proc_name |
7475 | because previous references within the function will have | |
7476 | created symbols attached to the current namespace. */ | |
7477 | if (get_proc_name (name, &entry, | |
7478 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7479 | && module_procedure)) |
6de9cd9a DN |
7480 | return MATCH_ERROR; |
7481 | ||
3d79abbd PB |
7482 | proc = gfc_current_block (); |
7483 | ||
bc3e7a8c TB |
7484 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7485 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7486 | not allowed for procedures. */ | |
7487 | if (entry->attr.is_bind_c == 1) | |
7488 | { | |
7489 | entry->attr.is_bind_c = 0; | |
7490 | if (entry->old_symbol != NULL) | |
7491 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7492 | "variables or common blocks", | |
7493 | &(entry->old_symbol->declared_at)); | |
7494 | else | |
7495 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7496 | "variables or common blocks", &gfc_current_locus); | |
7497 | } | |
f5acf0f2 | 7498 | |
bc3e7a8c TB |
7499 | /* Check what next non-whitespace character is so we can tell if there |
7500 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7501 | old_loc = gfc_current_locus; |
bc3e7a8c | 7502 | gfc_gobble_whitespace (); |
8fc541d3 | 7503 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7504 | |
3d79abbd | 7505 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7506 | { |
6de9cd9a DN |
7507 | m = gfc_match_formal_arglist (entry, 0, 1); |
7508 | if (m != MATCH_YES) | |
7509 | return MATCH_ERROR; | |
7510 | ||
1eabf70a TB |
7511 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7512 | never be an internal procedure. */ | |
7513 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7514 | if (is_bind_c == MATCH_ERROR) |
7515 | return MATCH_ERROR; | |
7516 | if (is_bind_c == MATCH_YES) | |
7517 | { | |
7518 | if (peek_char != '(') | |
7519 | { | |
7520 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7521 | return MATCH_ERROR; | |
7522 | } | |
89508a3f SK |
7523 | |
7524 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, | |
7525 | &(entry->declared_at), 1)) | |
7526 | return MATCH_ERROR; | |
0a524296 | 7527 | |
bc3e7a8c TB |
7528 | } |
7529 | ||
f11de7c5 | 7530 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7531 | && !add_global_entry (name, entry->binding_label, true, |
7532 | &old_loc)) | |
f11de7c5 TB |
7533 | return MATCH_ERROR; |
7534 | ||
7535 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7536 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7537 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7538 | return MATCH_ERROR; |
3d79abbd PB |
7539 | } |
7540 | else | |
7541 | { | |
c96cfa49 | 7542 | /* An entry in a function. |
636dff67 SK |
7543 | We need to take special care because writing |
7544 | ENTRY f() | |
7545 | as | |
7546 | ENTRY f | |
7547 | is allowed, whereas | |
7548 | ENTRY f() RESULT (r) | |
7549 | can't be written as | |
7550 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7551 | if (gfc_match_eos () == MATCH_YES) |
7552 | { | |
7553 | gfc_current_locus = old_loc; | |
7554 | /* Match the empty argument list, and add the interface to | |
7555 | the symbol. */ | |
7556 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7557 | } | |
7558 | else | |
7559 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7560 | ||
6de9cd9a DN |
7561 | if (m != MATCH_YES) |
7562 | return MATCH_ERROR; | |
7563 | ||
6de9cd9a DN |
7564 | result = NULL; |
7565 | ||
7566 | if (gfc_match_eos () == MATCH_YES) | |
7567 | { | |
524af0d6 JB |
7568 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7569 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7570 | return MATCH_ERROR; |
7571 | ||
d198b59a | 7572 | entry->result = entry; |
6de9cd9a DN |
7573 | } |
7574 | else | |
7575 | { | |
bc3e7a8c | 7576 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7577 | if (m == MATCH_NO) |
7578 | gfc_syntax_error (ST_ENTRY); | |
7579 | if (m != MATCH_YES) | |
7580 | return MATCH_ERROR; | |
7581 | ||
bc3e7a8c TB |
7582 | if (result) |
7583 | { | |
524af0d6 JB |
7584 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7585 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7586 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7587 | return MATCH_ERROR; |
7588 | entry->result = result; | |
7589 | } | |
7590 | else | |
7591 | { | |
524af0d6 JB |
7592 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7593 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7594 | return MATCH_ERROR; |
7595 | entry->result = entry; | |
7596 | } | |
6de9cd9a | 7597 | } |
f11de7c5 TB |
7598 | |
7599 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7600 | && !add_global_entry (name, entry->binding_label, false, |
7601 | &old_loc)) | |
f11de7c5 | 7602 | return MATCH_ERROR; |
6de9cd9a DN |
7603 | } |
7604 | ||
7605 | if (gfc_match_eos () != MATCH_YES) | |
7606 | { | |
7607 | gfc_syntax_error (ST_ENTRY); | |
7608 | return MATCH_ERROR; | |
7609 | } | |
7610 | ||
89508a3f SK |
7611 | /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */ |
7612 | if (proc->attr.elemental && entry->attr.is_bind_c) | |
7613 | { | |
7614 | gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an " | |
7615 | "elemental procedure", &entry->declared_at); | |
7616 | return MATCH_ERROR; | |
7617 | } | |
7618 | ||
3d79abbd PB |
7619 | entry->attr.recursive = proc->attr.recursive; |
7620 | entry->attr.elemental = proc->attr.elemental; | |
7621 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7622 | |
3d79abbd PB |
7623 | el = gfc_get_entry_list (); |
7624 | el->sym = entry; | |
7625 | el->next = gfc_current_ns->entries; | |
7626 | gfc_current_ns->entries = el; | |
7627 | if (el->next) | |
7628 | el->id = el->next->id + 1; | |
7629 | else | |
7630 | el->id = 1; | |
6de9cd9a | 7631 | |
3d79abbd PB |
7632 | new_st.op = EXEC_ENTRY; |
7633 | new_st.ext.entry = el; | |
7634 | ||
7635 | return MATCH_YES; | |
6de9cd9a DN |
7636 | } |
7637 | ||
7638 | ||
7639 | /* Match a subroutine statement, including optional prefixes. */ | |
7640 | ||
7641 | match | |
7642 | gfc_match_subroutine (void) | |
7643 | { | |
7644 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7645 | gfc_symbol *sym; | |
7646 | match m; | |
a8b3b0b6 CR |
7647 | match is_bind_c; |
7648 | char peek_char; | |
1eabf70a | 7649 | bool allow_binding_name; |
f28c46cd | 7650 | locus loc; |
6de9cd9a DN |
7651 | |
7652 | if (gfc_current_state () != COMP_NONE | |
7653 | && gfc_current_state () != COMP_INTERFACE | |
7654 | && gfc_current_state () != COMP_CONTAINS) | |
7655 | return MATCH_NO; | |
7656 | ||
1c8bcdf7 | 7657 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7658 | if (m != MATCH_YES) |
7659 | return m; | |
7660 | ||
7661 | m = gfc_match ("subroutine% %n", name); | |
7662 | if (m != MATCH_YES) | |
7663 | return m; | |
7664 | ||
1a492601 | 7665 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7666 | return MATCH_ERROR; |
3070bab4 | 7667 | |
7fcd5ad5 | 7668 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7669 | the symbol existed before. */ |
7fcd5ad5 TB |
7670 | sym->declared_at = gfc_current_locus; |
7671 | ||
4668d6f9 PT |
7672 | if (current_attr.module_procedure) |
7673 | sym->attr.module_procedure = 1; | |
7674 | ||
524af0d6 | 7675 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7676 | sym = sym->result; |
7677 | ||
6de9cd9a DN |
7678 | gfc_new_block = sym; |
7679 | ||
a8b3b0b6 | 7680 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7681 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7682 | gfc_gobble_whitespace (); |
8fc541d3 | 7683 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7684 | |
524af0d6 | 7685 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7686 | return MATCH_ERROR; |
7687 | ||
7688 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7689 | return MATCH_ERROR; | |
7690 | ||
a8b3b0b6 CR |
7691 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7692 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7693 | not allowed for procedures. */ | |
7694 | if (sym->attr.is_bind_c == 1) | |
7695 | { | |
7696 | sym->attr.is_bind_c = 0; | |
7697 | if (sym->old_symbol != NULL) | |
7698 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7699 | "variables or common blocks", | |
7700 | &(sym->old_symbol->declared_at)); | |
7701 | else | |
7702 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7703 | "variables or common blocks", &gfc_current_locus); | |
7704 | } | |
1eabf70a TB |
7705 | |
7706 | /* C binding names are not allowed for internal procedures. */ | |
7707 | if (gfc_current_state () == COMP_CONTAINS | |
7708 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7709 | allow_binding_name = false; | |
7710 | else | |
7711 | allow_binding_name = true; | |
7712 | ||
a8b3b0b6 CR |
7713 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7714 | so, then we need to make sure it's all correct. If it doesn't, | |
7715 | we still need to continue matching the rest of the subroutine line. */ | |
f28c46cd SK |
7716 | gfc_gobble_whitespace (); |
7717 | loc = gfc_current_locus; | |
1eabf70a | 7718 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7719 | if (is_bind_c == MATCH_ERROR) |
7720 | { | |
7721 | /* There was an attempt at the bind(c), but it was wrong. An | |
7722 | error message should have been printed w/in the gfc_match_bind_c | |
7723 | so here we'll just return the MATCH_ERROR. */ | |
7724 | return MATCH_ERROR; | |
7725 | } | |
7726 | ||
7727 | if (is_bind_c == MATCH_YES) | |
7728 | { | |
f28c46cd SK |
7729 | gfc_formal_arglist *arg; |
7730 | ||
1eabf70a | 7731 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7732 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7733 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7734 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7735 | "at %L may not be specified for an internal " | |
7736 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7737 | return MATCH_ERROR; |
7738 | ||
a8b3b0b6 CR |
7739 | if (peek_char != '(') |
7740 | { | |
7741 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7742 | return MATCH_ERROR; | |
7743 | } | |
f28c46cd SK |
7744 | |
7745 | /* Scan the dummy arguments for an alternate return. */ | |
7746 | for (arg = sym->formal; arg; arg = arg->next) | |
7747 | if (!arg->sym) | |
7748 | { | |
7749 | gfc_error ("Alternate return dummy argument cannot appear in a " | |
7750 | "SUBROUTINE with the BIND(C) attribute at %L", &loc); | |
7751 | return MATCH_ERROR; | |
7752 | } | |
7753 | ||
7754 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
7755 | return MATCH_ERROR; |
7756 | } | |
f5acf0f2 | 7757 | |
6de9cd9a DN |
7758 | if (gfc_match_eos () != MATCH_YES) |
7759 | { | |
7760 | gfc_syntax_error (ST_SUBROUTINE); | |
7761 | return MATCH_ERROR; | |
7762 | } | |
7763 | ||
524af0d6 | 7764 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7765 | { |
7766 | if(!sym->attr.module_procedure) | |
7767 | return MATCH_ERROR; | |
7768 | else | |
7769 | gfc_error_check (); | |
7770 | } | |
6de9cd9a | 7771 | |
c3005b0f | 7772 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7773 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7774 | |
6de9cd9a DN |
7775 | return MATCH_YES; |
7776 | } | |
7777 | ||
7778 | ||
3b37ccd4 FXC |
7779 | /* Check that the NAME identifier in a BIND attribute or statement |
7780 | is conform to C identifier rules. */ | |
7781 | ||
7782 | match | |
7783 | check_bind_name_identifier (char **name) | |
7784 | { | |
7785 | char *n = *name, *p; | |
7786 | ||
7787 | /* Remove leading spaces. */ | |
7788 | while (*n == ' ') | |
7789 | n++; | |
7790 | ||
7791 | /* On an empty string, free memory and set name to NULL. */ | |
7792 | if (*n == '\0') | |
7793 | { | |
7794 | free (*name); | |
7795 | *name = NULL; | |
7796 | return MATCH_YES; | |
7797 | } | |
7798 | ||
7799 | /* Remove trailing spaces. */ | |
7800 | p = n + strlen(n) - 1; | |
7801 | while (*p == ' ') | |
7802 | *(p--) = '\0'; | |
7803 | ||
7804 | /* Insert the identifier into the symbol table. */ | |
7805 | p = xstrdup (n); | |
7806 | free (*name); | |
7807 | *name = p; | |
7808 | ||
7809 | /* Now check that identifier is valid under C rules. */ | |
7810 | if (ISDIGIT (*p)) | |
7811 | { | |
7812 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7813 | return MATCH_ERROR; | |
7814 | } | |
7815 | ||
7816 | for (; *p; p++) | |
7817 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7818 | { | |
7819 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7820 | return MATCH_ERROR; | |
7821 | } | |
7822 | ||
7823 | return MATCH_YES; | |
7824 | } | |
7825 | ||
7826 | ||
a8b3b0b6 CR |
7827 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7828 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7829 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7830 | encounter the BIND(C) before the declaration itself. Return |
7831 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7832 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7833 | or MATCH_YES if the specifier was correct and the binding label and | |
7834 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7835 | current_ts. If allow_binding_name is false, no binding name may be |
7836 | given. */ | |
a8b3b0b6 CR |
7837 | |
7838 | match | |
1eabf70a | 7839 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7840 | { |
3b37ccd4 FXC |
7841 | char *binding_label = NULL; |
7842 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7843 | |
f5acf0f2 | 7844 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7845 | specifier or not. */ |
7846 | has_name_equals = 0; | |
7847 | ||
a8b3b0b6 CR |
7848 | /* This much we have to be able to match, in this order, if |
7849 | there is a bind(c) label. */ | |
7850 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7851 | return MATCH_NO; | |
7852 | ||
7853 | /* Now see if there is a binding label, or if we've reached the | |
7854 | end of the bind(c) attribute without one. */ | |
7855 | if (gfc_match_char (',') == MATCH_YES) | |
7856 | { | |
7857 | if (gfc_match (" name = ") != MATCH_YES) | |
7858 | { | |
7859 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7860 | "at %C"); | |
7861 | /* should give an error message here */ | |
7862 | return MATCH_ERROR; | |
7863 | } | |
7864 | ||
7865 | has_name_equals = 1; | |
7866 | ||
3b37ccd4 FXC |
7867 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7868 | { | |
7869 | gfc_free_expr (e); | |
7870 | return MATCH_ERROR; | |
7871 | } | |
f5acf0f2 | 7872 | |
3b37ccd4 | 7873 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7874 | { |
3b37ccd4 FXC |
7875 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7876 | gfc_free_expr (e); | |
7877 | return MATCH_ERROR; | |
a8b3b0b6 | 7878 | } |
3b37ccd4 FXC |
7879 | |
7880 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7881 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7882 | { |
3b37ccd4 FXC |
7883 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7884 | "default character kind"); | |
7885 | gfc_free_expr(e); | |
7886 | return MATCH_ERROR; | |
a8b3b0b6 | 7887 | } |
3b37ccd4 FXC |
7888 | |
7889 | // Get a C string from the Fortran string constant | |
7890 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7891 | e->value.character.length); | |
7892 | gfc_free_expr(e); | |
7893 | ||
7894 | // Check that it is valid (old gfc_match_name_C) | |
7895 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7896 | return MATCH_ERROR; | |
7897 | } | |
a8b3b0b6 CR |
7898 | |
7899 | /* Get the required right paren. */ | |
7900 | if (gfc_match_char (')') != MATCH_YES) | |
7901 | { | |
7902 | gfc_error ("Missing closing paren for binding label at %C"); | |
7903 | return MATCH_ERROR; | |
7904 | } | |
7905 | ||
1eabf70a TB |
7906 | if (has_name_equals && !allow_binding_name) |
7907 | { | |
7908 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7909 | return MATCH_ERROR; | |
7910 | } | |
7911 | ||
7912 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7913 | { | |
7914 | gfc_error ("For dummy procedure %s, no binding name is " | |
7915 | "allowed in BIND(C) at %C", sym->name); | |
7916 | return MATCH_ERROR; | |
7917 | } | |
7918 | ||
7919 | ||
a8b3b0b6 CR |
7920 | /* Save the binding label to the symbol. If sym is null, we're |
7921 | probably matching the typespec attributes of a declaration and | |
7922 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7923 | if (binding_label) |
a8b3b0b6 CR |
7924 | { |
7925 | if (sym != NULL) | |
62603fae | 7926 | sym->binding_label = binding_label; |
a8b3b0b6 | 7927 | else |
62603fae | 7928 | curr_binding_label = binding_label; |
a8b3b0b6 | 7929 | } |
1eabf70a | 7930 | else if (allow_binding_name) |
a8b3b0b6 CR |
7931 | { |
7932 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7933 | can set the label for it here. |
7934 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7935 | created. */ |
a8b3b0b6 | 7936 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7937 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7938 | } |
9e1d712c | 7939 | |
129d15a3 JW |
7940 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7941 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7942 | { |
7943 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7944 | return MATCH_ERROR; | |
7945 | } | |
7946 | ||
a8b3b0b6 CR |
7947 | return MATCH_YES; |
7948 | } | |
7949 | ||
7950 | ||
1f2959f0 | 7951 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7952 | |
7953 | static int | |
7954 | contained_procedure (void) | |
7955 | { | |
083de129 | 7956 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7957 | |
083de129 TB |
7958 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7959 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7960 | return 1; | |
ddc9ce91 TS |
7961 | |
7962 | return 0; | |
7963 | } | |
7964 | ||
d51347f9 | 7965 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7966 | interoperable with the corresponding C enumeration type, making |
7967 | sure that -fshort-enums is honored. */ | |
7968 | ||
7969 | static void | |
7970 | set_enum_kind(void) | |
7971 | { | |
7972 | enumerator_history *current_history = NULL; | |
7973 | int kind; | |
7974 | int i; | |
7975 | ||
7976 | if (max_enum == NULL || enum_history == NULL) | |
7977 | return; | |
7978 | ||
cab129d1 | 7979 | if (!flag_short_enums) |
d51347f9 TB |
7980 | return; |
7981 | ||
25d8f0a2 TS |
7982 | i = 0; |
7983 | do | |
7984 | { | |
7985 | kind = gfc_integer_kinds[i++].kind; | |
7986 | } | |
d51347f9 | 7987 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7988 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7989 | kind) != ARITH_OK); | |
7990 | ||
7991 | current_history = enum_history; | |
7992 | while (current_history != NULL) | |
7993 | { | |
7994 | current_history->sym->ts.kind = kind; | |
7995 | current_history = current_history->next; | |
7996 | } | |
7997 | } | |
7998 | ||
636dff67 | 7999 | |
6de9cd9a | 8000 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
8001 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
8002 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
8003 | |
8004 | match | |
636dff67 | 8005 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
8006 | { |
8007 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8008 | gfc_compile_state state; | |
8009 | locus old_loc; | |
8010 | const char *block_name; | |
8011 | const char *target; | |
ddc9ce91 | 8012 | int eos_ok; |
6de9cd9a | 8013 | match m; |
0cab6b73 TK |
8014 | gfc_namespace *parent_ns, *ns, *prev_ns; |
8015 | gfc_namespace **nsp; | |
63af1586 | 8016 | bool abreviated_modproc_decl = false; |
874108a9 | 8017 | bool got_matching_end = false; |
6de9cd9a | 8018 | |
63645982 | 8019 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8020 | if (gfc_match ("end") != MATCH_YES) |
8021 | return MATCH_NO; | |
8022 | ||
8023 | state = gfc_current_state (); | |
636dff67 SK |
8024 | block_name = gfc_current_block () == NULL |
8025 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 8026 | |
03af1e4c | 8027 | switch (state) |
6de9cd9a | 8028 | { |
03af1e4c DK |
8029 | case COMP_ASSOCIATE: |
8030 | case COMP_BLOCK: | |
2eb3745a | 8031 | if (gfc_str_startswith (block_name, "block@")) |
03af1e4c DK |
8032 | block_name = NULL; |
8033 | break; | |
8034 | ||
8035 | case COMP_CONTAINS: | |
8036 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 8037 | state = gfc_state_stack->previous->state; |
636dff67 SK |
8038 | block_name = gfc_state_stack->previous->sym == NULL |
8039 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
8040 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
8041 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
8042 | break; |
8043 | ||
8044 | default: | |
8045 | break; | |
6de9cd9a DN |
8046 | } |
8047 | ||
63af1586 PT |
8048 | if (!abreviated_modproc_decl) |
8049 | abreviated_modproc_decl = gfc_current_block () | |
8050 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 8051 | |
6de9cd9a DN |
8052 | switch (state) |
8053 | { | |
8054 | case COMP_NONE: | |
8055 | case COMP_PROGRAM: | |
8056 | *st = ST_END_PROGRAM; | |
8057 | target = " program"; | |
ddc9ce91 | 8058 | eos_ok = 1; |
6de9cd9a DN |
8059 | break; |
8060 | ||
8061 | case COMP_SUBROUTINE: | |
8062 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 8063 | if (!abreviated_modproc_decl) |
6de9cd9a | 8064 | target = " subroutine"; |
4668d6f9 PT |
8065 | else |
8066 | target = " procedure"; | |
ddc9ce91 | 8067 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
8068 | break; |
8069 | ||
8070 | case COMP_FUNCTION: | |
8071 | *st = ST_END_FUNCTION; | |
4668d6f9 | 8072 | if (!abreviated_modproc_decl) |
6de9cd9a | 8073 | target = " function"; |
4668d6f9 PT |
8074 | else |
8075 | target = " procedure"; | |
ddc9ce91 | 8076 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
8077 | break; |
8078 | ||
8079 | case COMP_BLOCK_DATA: | |
8080 | *st = ST_END_BLOCK_DATA; | |
8081 | target = " block data"; | |
ddc9ce91 | 8082 | eos_ok = 1; |
6de9cd9a DN |
8083 | break; |
8084 | ||
8085 | case COMP_MODULE: | |
8086 | *st = ST_END_MODULE; | |
8087 | target = " module"; | |
ddc9ce91 | 8088 | eos_ok = 1; |
6de9cd9a DN |
8089 | break; |
8090 | ||
4668d6f9 PT |
8091 | case COMP_SUBMODULE: |
8092 | *st = ST_END_SUBMODULE; | |
8093 | target = " submodule"; | |
8094 | eos_ok = 1; | |
8095 | break; | |
8096 | ||
6de9cd9a DN |
8097 | case COMP_INTERFACE: |
8098 | *st = ST_END_INTERFACE; | |
8099 | target = " interface"; | |
ddc9ce91 | 8100 | eos_ok = 0; |
6de9cd9a DN |
8101 | break; |
8102 | ||
f6288c24 FR |
8103 | case COMP_MAP: |
8104 | *st = ST_END_MAP; | |
8105 | target = " map"; | |
8106 | eos_ok = 0; | |
8107 | break; | |
8108 | ||
8109 | case COMP_UNION: | |
8110 | *st = ST_END_UNION; | |
8111 | target = " union"; | |
8112 | eos_ok = 0; | |
8113 | break; | |
8114 | ||
8115 | case COMP_STRUCTURE: | |
8116 | *st = ST_END_STRUCTURE; | |
8117 | target = " structure"; | |
8118 | eos_ok = 0; | |
8119 | break; | |
8120 | ||
6de9cd9a | 8121 | case COMP_DERIVED: |
30b608eb | 8122 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
8123 | *st = ST_END_TYPE; |
8124 | target = " type"; | |
ddc9ce91 | 8125 | eos_ok = 0; |
6de9cd9a DN |
8126 | break; |
8127 | ||
03af1e4c DK |
8128 | case COMP_ASSOCIATE: |
8129 | *st = ST_END_ASSOCIATE; | |
8130 | target = " associate"; | |
8131 | eos_ok = 0; | |
8132 | break; | |
8133 | ||
9abe5e56 DK |
8134 | case COMP_BLOCK: |
8135 | *st = ST_END_BLOCK; | |
8136 | target = " block"; | |
8137 | eos_ok = 0; | |
8138 | break; | |
8139 | ||
6de9cd9a DN |
8140 | case COMP_IF: |
8141 | *st = ST_ENDIF; | |
8142 | target = " if"; | |
ddc9ce91 | 8143 | eos_ok = 0; |
6de9cd9a DN |
8144 | break; |
8145 | ||
8146 | case COMP_DO: | |
8c6a85e3 | 8147 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
8148 | *st = ST_ENDDO; |
8149 | target = " do"; | |
ddc9ce91 | 8150 | eos_ok = 0; |
6de9cd9a DN |
8151 | break; |
8152 | ||
d0a4a61c TB |
8153 | case COMP_CRITICAL: |
8154 | *st = ST_END_CRITICAL; | |
8155 | target = " critical"; | |
8156 | eos_ok = 0; | |
8157 | break; | |
8158 | ||
6de9cd9a | 8159 | case COMP_SELECT: |
cf2b3c22 | 8160 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
8161 | *st = ST_END_SELECT; |
8162 | target = " select"; | |
ddc9ce91 | 8163 | eos_ok = 0; |
6de9cd9a DN |
8164 | break; |
8165 | ||
8166 | case COMP_FORALL: | |
8167 | *st = ST_END_FORALL; | |
8168 | target = " forall"; | |
ddc9ce91 | 8169 | eos_ok = 0; |
6de9cd9a DN |
8170 | break; |
8171 | ||
8172 | case COMP_WHERE: | |
8173 | *st = ST_END_WHERE; | |
8174 | target = " where"; | |
ddc9ce91 | 8175 | eos_ok = 0; |
6de9cd9a DN |
8176 | break; |
8177 | ||
25d8f0a2 TS |
8178 | case COMP_ENUM: |
8179 | *st = ST_END_ENUM; | |
8180 | target = " enum"; | |
8181 | eos_ok = 0; | |
8182 | last_initializer = NULL; | |
8183 | set_enum_kind (); | |
8184 | gfc_free_enum_history (); | |
8185 | break; | |
8186 | ||
6de9cd9a DN |
8187 | default: |
8188 | gfc_error ("Unexpected END statement at %C"); | |
8189 | goto cleanup; | |
8190 | } | |
8191 | ||
3a43b5b3 | 8192 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8193 | if (gfc_match_eos () == MATCH_YES) |
8194 | { | |
272001a2 TB |
8195 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8196 | { | |
524af0d6 | 8197 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 8198 | "instead of %s statement at %L", |
4668d6f9 PT |
8199 | abreviated_modproc_decl ? "END PROCEDURE" |
8200 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
8201 | goto cleanup; |
8202 | } | |
8203 | else if (!eos_ok) | |
6de9cd9a | 8204 | { |
66e4ab31 | 8205 | /* We would have required END [something]. */ |
59ce85b5 TS |
8206 | gfc_error ("%s statement expected at %L", |
8207 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
8208 | goto cleanup; |
8209 | } | |
8210 | ||
8211 | return MATCH_YES; | |
8212 | } | |
8213 | ||
8214 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8215 | if (gfc_match (target) != MATCH_YES) | |
8216 | { | |
4668d6f9 PT |
8217 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8218 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
8219 | goto cleanup; |
8220 | } | |
874108a9 AV |
8221 | else |
8222 | got_matching_end = true; | |
6de9cd9a | 8223 | |
3a43b5b3 | 8224 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8225 | /* If we're at the end, make sure a block name wasn't required. */ |
8226 | if (gfc_match_eos () == MATCH_YES) | |
8227 | { | |
8228 | ||
690af379 | 8229 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 8230 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 8231 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
8232 | return MATCH_YES; |
8233 | ||
9abe5e56 | 8234 | if (!block_name) |
6de9cd9a DN |
8235 | return MATCH_YES; |
8236 | ||
c4100eae | 8237 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 8238 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
8239 | |
8240 | return MATCH_ERROR; | |
8241 | } | |
8242 | ||
8243 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8244 | if (*st == ST_END_INTERFACE) | |
8245 | return gfc_match_end_interface (); | |
8246 | ||
66e4ab31 SK |
8247 | /* We haven't hit the end of statement, so what is left must be an |
8248 | end-name. */ | |
6de9cd9a DN |
8249 | m = gfc_match_space (); |
8250 | if (m == MATCH_YES) | |
8251 | m = gfc_match_name (name); | |
8252 | ||
8253 | if (m == MATCH_NO) | |
8254 | gfc_error ("Expected terminating name at %C"); | |
8255 | if (m != MATCH_YES) | |
8256 | goto cleanup; | |
8257 | ||
8258 | if (block_name == NULL) | |
8259 | goto syntax; | |
8260 | ||
3d5dc929 PT |
8261 | /* We have to pick out the declared submodule name from the composite |
8262 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8263 | if (state == COMP_SUBMODULE) | |
8264 | block_name = strchr (block_name, '.') + 1; | |
8265 | ||
3070bab4 | 8266 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 8267 | { |
c4100eae | 8268 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
8269 | gfc_ascii_statement (*st)); |
8270 | goto cleanup; | |
8271 | } | |
3070bab4 JW |
8272 | /* Procedure pointer as function result. */ |
8273 | else if (strcmp (block_name, "ppr@") == 0 | |
8274 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8275 | { | |
c4100eae | 8276 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
8277 | gfc_current_block ()->ns->proc_name->name, |
8278 | gfc_ascii_statement (*st)); | |
8279 | goto cleanup; | |
8280 | } | |
6de9cd9a DN |
8281 | |
8282 | if (gfc_match_eos () == MATCH_YES) | |
8283 | return MATCH_YES; | |
8284 | ||
8285 | syntax: | |
8286 | gfc_syntax_error (*st); | |
8287 | ||
8288 | cleanup: | |
63645982 | 8289 | gfc_current_locus = old_loc; |
0cab6b73 TK |
8290 | |
8291 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8292 | Remove it from the parent namespace's sibling list. */ | |
8293 | ||
874108a9 | 8294 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
8295 | { |
8296 | parent_ns = gfc_current_ns->parent; | |
8297 | ||
8298 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8299 | ||
8300 | prev_ns = NULL; | |
8301 | ns = *nsp; | |
8302 | while (ns) | |
8303 | { | |
8304 | if (ns == gfc_current_ns) | |
8305 | { | |
8306 | if (prev_ns == NULL) | |
8307 | *nsp = NULL; | |
8308 | else | |
8309 | prev_ns->sibling = ns->sibling; | |
8310 | } | |
8311 | prev_ns = ns; | |
8312 | ns = ns->sibling; | |
8313 | } | |
874108a9 | 8314 | |
0cab6b73 TK |
8315 | gfc_free_namespace (gfc_current_ns); |
8316 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
8317 | gfc_state_stack = gfc_state_stack->previous; |
8318 | state = gfc_current_state (); | |
0cab6b73 TK |
8319 | } |
8320 | ||
6de9cd9a DN |
8321 | return MATCH_ERROR; |
8322 | } | |
8323 | ||
8324 | ||
8325 | ||
8326 | /***************** Attribute declaration statements ****************/ | |
8327 | ||
8328 | /* Set the attribute of a single variable. */ | |
8329 | ||
8330 | static match | |
8331 | attr_decl1 (void) | |
8332 | { | |
8333 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8334 | gfc_array_spec *as; | |
97440db5 ML |
8335 | |
8336 | /* Workaround -Wmaybe-uninitialized false positive during | |
8337 | profiledbootstrap by initializing them. */ | |
8338 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8339 | locus var_locus; |
8340 | match m; | |
8341 | ||
8342 | as = NULL; | |
8343 | ||
8344 | m = gfc_match_name (name); | |
8345 | if (m != MATCH_YES) | |
8346 | goto cleanup; | |
8347 | ||
08a6b8e0 | 8348 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8349 | return MATCH_ERROR; |
8350 | ||
524af0d6 | 8351 | if (!check_function_name (name)) |
bb9de0c4 JW |
8352 | { |
8353 | m = MATCH_ERROR; | |
8354 | goto cleanup; | |
8355 | } | |
f5acf0f2 | 8356 | |
63645982 | 8357 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8358 | |
8359 | /* Deal with possible array specification for certain attributes. */ | |
8360 | if (current_attr.dimension | |
be59db2d | 8361 | || current_attr.codimension |
6de9cd9a DN |
8362 | || current_attr.allocatable |
8363 | || current_attr.pointer | |
8364 | || current_attr.target) | |
8365 | { | |
be59db2d TB |
8366 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8367 | !current_attr.dimension | |
8368 | && !current_attr.pointer | |
8369 | && !current_attr.target); | |
6de9cd9a DN |
8370 | if (m == MATCH_ERROR) |
8371 | goto cleanup; | |
8372 | ||
8373 | if (current_attr.dimension && m == MATCH_NO) | |
8374 | { | |
636dff67 SK |
8375 | gfc_error ("Missing array specification at %L in DIMENSION " |
8376 | "statement", &var_locus); | |
6de9cd9a DN |
8377 | m = MATCH_ERROR; |
8378 | goto cleanup; | |
8379 | } | |
8380 | ||
1283ab12 TB |
8381 | if (current_attr.dimension && sym->value) |
8382 | { | |
8383 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8384 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8385 | m = MATCH_ERROR; |
8386 | goto cleanup; | |
8387 | } | |
8388 | ||
be59db2d TB |
8389 | if (current_attr.codimension && m == MATCH_NO) |
8390 | { | |
8391 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8392 | "statement", &var_locus); | |
8393 | m = MATCH_ERROR; | |
8394 | goto cleanup; | |
8395 | } | |
8396 | ||
6de9cd9a DN |
8397 | if ((current_attr.allocatable || current_attr.pointer) |
8398 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8399 | { | |
636dff67 | 8400 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8401 | m = MATCH_ERROR; |
8402 | goto cleanup; | |
8403 | } | |
8404 | } | |
8405 | ||
2e23972e JW |
8406 | /* Update symbol table. DIMENSION attribute is set in |
8407 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8408 | to the first component, or '_data' field. */ |
d40477b4 | 8409 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8410 | { |
c9935123 SK |
8411 | /* gfc_set_array_spec sets sym->attr not CLASS_DATA(sym)->attr. Check |
8412 | for duplicate attribute here. */ | |
8413 | if (CLASS_DATA(sym)->attr.dimension == 1 && as) | |
8414 | { | |
8415 | gfc_error ("Duplicate DIMENSION attribute at %C"); | |
8416 | m = MATCH_ERROR; | |
8417 | goto cleanup; | |
8418 | } | |
8419 | ||
524af0d6 | 8420 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8421 | { |
8422 | m = MATCH_ERROR; | |
8423 | goto cleanup; | |
8424 | } | |
2e23972e JW |
8425 | } |
8426 | else | |
8427 | { | |
be59db2d | 8428 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8429 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8430 | { |
8431 | m = MATCH_ERROR; | |
8432 | goto cleanup; | |
8433 | } | |
6de9cd9a | 8434 | } |
f5acf0f2 | 8435 | |
528622fd | 8436 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8437 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8438 | { |
8439 | m = MATCH_ERROR; | |
8440 | goto cleanup; | |
8441 | } | |
6de9cd9a | 8442 | |
524af0d6 | 8443 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8444 | { |
8445 | m = MATCH_ERROR; | |
8446 | goto cleanup; | |
8447 | } | |
d51347f9 | 8448 | |
83d890b9 AL |
8449 | if (sym->attr.cray_pointee && sym->as != NULL) |
8450 | { | |
8451 | /* Fix the array spec. */ | |
f5acf0f2 | 8452 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8453 | if (m == MATCH_ERROR) |
8454 | goto cleanup; | |
8455 | } | |
6de9cd9a | 8456 | |
524af0d6 | 8457 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8458 | { |
8459 | m = MATCH_ERROR; | |
8460 | goto cleanup; | |
8461 | } | |
8462 | ||
6de9cd9a DN |
8463 | if ((current_attr.external || current_attr.intrinsic) |
8464 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8465 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8466 | { |
8467 | m = MATCH_ERROR; | |
8468 | goto cleanup; | |
8469 | } | |
8470 | ||
3070bab4 JW |
8471 | add_hidden_procptr_result (sym); |
8472 | ||
6de9cd9a DN |
8473 | return MATCH_YES; |
8474 | ||
8475 | cleanup: | |
8476 | gfc_free_array_spec (as); | |
8477 | return m; | |
8478 | } | |
8479 | ||
8480 | ||
8481 | /* Generic attribute declaration subroutine. Used for attributes that | |
8482 | just have a list of names. */ | |
8483 | ||
8484 | static match | |
8485 | attr_decl (void) | |
8486 | { | |
8487 | match m; | |
8488 | ||
8489 | /* Gobble the optional double colon, by simply ignoring the result | |
8490 | of gfc_match(). */ | |
8491 | gfc_match (" ::"); | |
8492 | ||
8493 | for (;;) | |
8494 | { | |
8495 | m = attr_decl1 (); | |
8496 | if (m != MATCH_YES) | |
8497 | break; | |
8498 | ||
8499 | if (gfc_match_eos () == MATCH_YES) | |
8500 | { | |
8501 | m = MATCH_YES; | |
8502 | break; | |
8503 | } | |
8504 | ||
8505 | if (gfc_match_char (',') != MATCH_YES) | |
8506 | { | |
8507 | gfc_error ("Unexpected character in variable list at %C"); | |
8508 | m = MATCH_ERROR; | |
8509 | break; | |
8510 | } | |
8511 | } | |
8512 | ||
8513 | return m; | |
8514 | } | |
8515 | ||
8516 | ||
83d890b9 AL |
8517 | /* This routine matches Cray Pointer declarations of the form: |
8518 | pointer ( <pointer>, <pointee> ) | |
8519 | or | |
d51347f9 TB |
8520 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8521 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8522 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8523 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8524 | the pointee. For the statement |
83d890b9 AL |
8525 | pointer (ipt, ar(10)) |
8526 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8527 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8528 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8529 | |
8530 | static match | |
8531 | cray_pointer_decl (void) | |
8532 | { | |
8533 | match m; | |
be59db2d | 8534 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8535 | gfc_symbol *cptr; /* Pointer symbol. */ |
8536 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8537 | locus var_locus; | |
8538 | bool done = false; | |
8539 | ||
8540 | while (!done) | |
8541 | { | |
8542 | if (gfc_match_char ('(') != MATCH_YES) | |
8543 | { | |
a4d9b221 | 8544 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8545 | return MATCH_ERROR; |
83d890b9 | 8546 | } |
d51347f9 | 8547 | |
83d890b9 AL |
8548 | /* Match pointer. */ |
8549 | var_locus = gfc_current_locus; | |
8550 | gfc_clear_attr (¤t_attr); | |
8551 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8552 | current_ts.type = BT_INTEGER; | |
8553 | current_ts.kind = gfc_index_integer_kind; | |
8554 | ||
d51347f9 | 8555 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8556 | if (m != MATCH_YES) |
8557 | { | |
8558 | gfc_error ("Expected variable name at %C"); | |
8559 | return m; | |
8560 | } | |
d51347f9 | 8561 | |
524af0d6 | 8562 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8563 | return MATCH_ERROR; |
8564 | ||
d51347f9 | 8565 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8566 | |
8567 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8568 | { | |
8569 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8570 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8571 | } |
8572 | else if (cptr->ts.type != BT_INTEGER) | |
8573 | { | |
e25a0da3 | 8574 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8575 | return MATCH_ERROR; |
8576 | } | |
8577 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8578 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8579 | " memory addresses require %d bytes", |
636dff67 | 8580 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8581 | |
8582 | if (gfc_match_char (',') != MATCH_YES) | |
8583 | { | |
8584 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8585 | return MATCH_ERROR; |
83d890b9 AL |
8586 | } |
8587 | ||
d51347f9 | 8588 | /* Match Pointee. */ |
83d890b9 AL |
8589 | var_locus = gfc_current_locus; |
8590 | gfc_clear_attr (¤t_attr); | |
8591 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8592 | current_ts.type = BT_UNKNOWN; | |
8593 | current_ts.kind = 0; | |
8594 | ||
8595 | m = gfc_match_symbol (&cpte, 0); | |
8596 | if (m != MATCH_YES) | |
8597 | { | |
8598 | gfc_error ("Expected variable name at %C"); | |
8599 | return m; | |
8600 | } | |
d51347f9 | 8601 | |
83d890b9 | 8602 | /* Check for an optional array spec. */ |
be59db2d | 8603 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8604 | if (m == MATCH_ERROR) |
8605 | { | |
8606 | gfc_free_array_spec (as); | |
8607 | return m; | |
8608 | } | |
8609 | else if (m == MATCH_NO) | |
8610 | { | |
8611 | gfc_free_array_spec (as); | |
8612 | as = NULL; | |
f5acf0f2 | 8613 | } |
83d890b9 | 8614 | |
524af0d6 | 8615 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8616 | return MATCH_ERROR; |
8617 | ||
8618 | gfc_set_sym_referenced (cpte); | |
8619 | ||
8620 | if (cpte->as == NULL) | |
8621 | { | |
524af0d6 | 8622 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
1fe61adf | 8623 | gfc_internal_error ("Cannot set Cray pointee array spec."); |
83d890b9 AL |
8624 | } |
8625 | else if (as != NULL) | |
8626 | { | |
e25a0da3 | 8627 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8628 | gfc_free_array_spec (as); |
8629 | return MATCH_ERROR; | |
8630 | } | |
f5acf0f2 | 8631 | |
83d890b9 | 8632 | as = NULL; |
f5acf0f2 | 8633 | |
83d890b9 AL |
8634 | if (cpte->as != NULL) |
8635 | { | |
8636 | /* Fix array spec. */ | |
8637 | m = gfc_mod_pointee_as (cpte->as); | |
8638 | if (m == MATCH_ERROR) | |
8639 | return m; | |
f5acf0f2 PT |
8640 | } |
8641 | ||
83d890b9 | 8642 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8643 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8644 | |
8645 | if (gfc_match_char (')') != MATCH_YES) | |
8646 | { | |
8647 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8648 | return MATCH_ERROR; |
83d890b9 AL |
8649 | } |
8650 | m = gfc_match_char (','); | |
8651 | if (m != MATCH_YES) | |
8652 | done = true; /* Stop searching for more declarations. */ | |
8653 | ||
8654 | } | |
f5acf0f2 | 8655 | |
83d890b9 AL |
8656 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8657 | || gfc_match_eos () != MATCH_YES) | |
8658 | { | |
a4d9b221 | 8659 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8660 | return MATCH_ERROR; |
8661 | } | |
8662 | return MATCH_YES; | |
8663 | } | |
8664 | ||
8665 | ||
6de9cd9a DN |
8666 | match |
8667 | gfc_match_external (void) | |
8668 | { | |
8669 | ||
8670 | gfc_clear_attr (¤t_attr); | |
1902704e | 8671 | current_attr.external = 1; |
6de9cd9a DN |
8672 | |
8673 | return attr_decl (); | |
8674 | } | |
8675 | ||
8676 | ||
6de9cd9a DN |
8677 | match |
8678 | gfc_match_intent (void) | |
8679 | { | |
8680 | sym_intent intent; | |
8681 | ||
9abe5e56 DK |
8682 | /* This is not allowed within a BLOCK construct! */ |
8683 | if (gfc_current_state () == COMP_BLOCK) | |
8684 | { | |
8685 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8686 | return MATCH_ERROR; | |
8687 | } | |
8688 | ||
6de9cd9a DN |
8689 | intent = match_intent_spec (); |
8690 | if (intent == INTENT_UNKNOWN) | |
8691 | return MATCH_ERROR; | |
8692 | ||
8693 | gfc_clear_attr (¤t_attr); | |
1902704e | 8694 | current_attr.intent = intent; |
6de9cd9a DN |
8695 | |
8696 | return attr_decl (); | |
8697 | } | |
8698 | ||
8699 | ||
8700 | match | |
8701 | gfc_match_intrinsic (void) | |
8702 | { | |
8703 | ||
8704 | gfc_clear_attr (¤t_attr); | |
1902704e | 8705 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8706 | |
8707 | return attr_decl (); | |
8708 | } | |
8709 | ||
8710 | ||
8711 | match | |
8712 | gfc_match_optional (void) | |
8713 | { | |
9abe5e56 DK |
8714 | /* This is not allowed within a BLOCK construct! */ |
8715 | if (gfc_current_state () == COMP_BLOCK) | |
8716 | { | |
8717 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8718 | return MATCH_ERROR; | |
8719 | } | |
6de9cd9a DN |
8720 | |
8721 | gfc_clear_attr (¤t_attr); | |
1902704e | 8722 | current_attr.optional = 1; |
6de9cd9a DN |
8723 | |
8724 | return attr_decl (); | |
8725 | } | |
8726 | ||
8727 | ||
8728 | match | |
8729 | gfc_match_pointer (void) | |
8730 | { | |
83d890b9 | 8731 | gfc_gobble_whitespace (); |
8fc541d3 | 8732 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8733 | { |
c61819ff | 8734 | if (!flag_cray_pointer) |
83d890b9 | 8735 | { |
a3f9f006 ML |
8736 | gfc_error ("Cray pointer declaration at %C requires " |
8737 | "%<-fcray-pointer%> flag"); | |
83d890b9 AL |
8738 | return MATCH_ERROR; |
8739 | } | |
8740 | return cray_pointer_decl (); | |
8741 | } | |
8742 | else | |
8743 | { | |
8744 | gfc_clear_attr (¤t_attr); | |
1902704e | 8745 | current_attr.pointer = 1; |
f5acf0f2 | 8746 | |
83d890b9 AL |
8747 | return attr_decl (); |
8748 | } | |
6de9cd9a DN |
8749 | } |
8750 | ||
8751 | ||
8752 | match | |
8753 | gfc_match_allocatable (void) | |
8754 | { | |
6de9cd9a | 8755 | gfc_clear_attr (¤t_attr); |
1902704e | 8756 | current_attr.allocatable = 1; |
6de9cd9a DN |
8757 | |
8758 | return attr_decl (); | |
8759 | } | |
8760 | ||
8761 | ||
be59db2d TB |
8762 | match |
8763 | gfc_match_codimension (void) | |
8764 | { | |
8765 | gfc_clear_attr (¤t_attr); | |
8766 | current_attr.codimension = 1; | |
8767 | ||
8768 | return attr_decl (); | |
8769 | } | |
8770 | ||
8771 | ||
fe4e525c TB |
8772 | match |
8773 | gfc_match_contiguous (void) | |
8774 | { | |
524af0d6 | 8775 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8776 | return MATCH_ERROR; |
8777 | ||
8778 | gfc_clear_attr (¤t_attr); | |
8779 | current_attr.contiguous = 1; | |
8780 | ||
8781 | return attr_decl (); | |
8782 | } | |
8783 | ||
8784 | ||
6de9cd9a DN |
8785 | match |
8786 | gfc_match_dimension (void) | |
8787 | { | |
6de9cd9a | 8788 | gfc_clear_attr (¤t_attr); |
1902704e | 8789 | current_attr.dimension = 1; |
6de9cd9a DN |
8790 | |
8791 | return attr_decl (); | |
8792 | } | |
8793 | ||
8794 | ||
8795 | match | |
8796 | gfc_match_target (void) | |
8797 | { | |
6de9cd9a | 8798 | gfc_clear_attr (¤t_attr); |
1902704e | 8799 | current_attr.target = 1; |
6de9cd9a DN |
8800 | |
8801 | return attr_decl (); | |
8802 | } | |
8803 | ||
8804 | ||
8805 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8806 | statement. */ | |
8807 | ||
8808 | static match | |
8809 | access_attr_decl (gfc_statement st) | |
8810 | { | |
8811 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8812 | interface_type type; | |
8813 | gfc_user_op *uop; | |
c3f34952 | 8814 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8815 | gfc_intrinsic_op op; |
6de9cd9a | 8816 | match m; |
b4882698 | 8817 | gfc_access access = (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
6de9cd9a DN |
8818 | |
8819 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8820 | goto done; | |
8821 | ||
8822 | for (;;) | |
8823 | { | |
a1ee985f | 8824 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8825 | if (m == MATCH_NO) |
8826 | goto syntax; | |
8827 | if (m == MATCH_ERROR) | |
b4882698 | 8828 | goto done; |
6de9cd9a DN |
8829 | |
8830 | switch (type) | |
8831 | { | |
8832 | case INTERFACE_NAMELESS: | |
9e1d712c | 8833 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8834 | goto syntax; |
8835 | ||
8836 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8837 | case INTERFACE_DTIO: |
dc42a736 | 8838 | |
6de9cd9a DN |
8839 | if (gfc_get_symbol (name, NULL, &sym)) |
8840 | goto done; | |
8841 | ||
41036686 PT |
8842 | if (type == INTERFACE_DTIO |
8843 | && gfc_current_ns->proc_name | |
8844 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8845 | && sym->attr.flavor == FL_UNKNOWN) | |
8846 | sym->attr.flavor = FL_PROCEDURE; | |
8847 | ||
b4882698 SK |
8848 | if (!gfc_add_access (&sym->attr, access, sym->name, NULL)) |
8849 | goto done; | |
6de9cd9a | 8850 | |
c3f34952 | 8851 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
b4882698 SK |
8852 | && !gfc_add_access (&dt_sym->attr, access, sym->name, NULL)) |
8853 | goto done; | |
c3f34952 | 8854 | |
6de9cd9a DN |
8855 | break; |
8856 | ||
8857 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8858 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8859 | { |
fb03a37e TK |
8860 | gfc_intrinsic_op other_op; |
8861 | ||
b4882698 | 8862 | gfc_current_ns->operator_access[op] = access; |
fb03a37e TK |
8863 | |
8864 | /* Handle the case if there is another op with the same | |
8865 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8866 | other_op = gfc_equivalent_op (op); | |
8867 | ||
8868 | if (other_op != INTRINSIC_NONE) | |
b4882698 | 8869 | gfc_current_ns->operator_access[other_op] = access; |
6de9cd9a DN |
8870 | } |
8871 | else | |
8872 | { | |
8873 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8874 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8875 | goto done; |
8876 | } | |
8877 | ||
8878 | break; | |
8879 | ||
8880 | case INTERFACE_USER_OP: | |
8881 | uop = gfc_get_uop (name); | |
8882 | ||
8883 | if (uop->access == ACCESS_UNKNOWN) | |
8884 | { | |
b4882698 | 8885 | uop->access = access; |
6de9cd9a DN |
8886 | } |
8887 | else | |
8888 | { | |
636dff67 SK |
8889 | gfc_error ("Access specification of the .%s. operator at %C " |
8890 | "has already been specified", sym->name); | |
6de9cd9a DN |
8891 | goto done; |
8892 | } | |
8893 | ||
8894 | break; | |
8895 | } | |
8896 | ||
8897 | if (gfc_match_char (',') == MATCH_NO) | |
8898 | break; | |
8899 | } | |
8900 | ||
8901 | if (gfc_match_eos () != MATCH_YES) | |
8902 | goto syntax; | |
8903 | return MATCH_YES; | |
8904 | ||
8905 | syntax: | |
8906 | gfc_syntax_error (st); | |
8907 | ||
8908 | done: | |
8909 | return MATCH_ERROR; | |
8910 | } | |
8911 | ||
8912 | ||
ee7e677f TB |
8913 | match |
8914 | gfc_match_protected (void) | |
8915 | { | |
8916 | gfc_symbol *sym; | |
8917 | match m; | |
b4882698 SK |
8918 | char c; |
8919 | ||
8920 | /* PROTECTED has already been seen, but must be followed by whitespace | |
8921 | or ::. */ | |
8922 | c = gfc_peek_ascii_char (); | |
8923 | if (!gfc_is_whitespace (c) && c != ':') | |
8924 | return MATCH_NO; | |
ee7e677f | 8925 | |
73641c88 SK |
8926 | if (!gfc_current_ns->proc_name |
8927 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8928 | { |
8929 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8930 | "part of a module"); | |
8931 | return MATCH_ERROR; | |
8932 | ||
8933 | } | |
8934 | ||
b4882698 SK |
8935 | gfc_match (" ::"); |
8936 | ||
524af0d6 | 8937 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8938 | return MATCH_ERROR; |
8939 | ||
b4882698 | 8940 | /* PROTECTED has an entity-list. */ |
ee7e677f TB |
8941 | if (gfc_match_eos () == MATCH_YES) |
8942 | goto syntax; | |
8943 | ||
8944 | for(;;) | |
8945 | { | |
8946 | m = gfc_match_symbol (&sym, 0); | |
8947 | switch (m) | |
8948 | { | |
8949 | case MATCH_YES: | |
524af0d6 | 8950 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8951 | return MATCH_ERROR; |
8952 | goto next_item; | |
8953 | ||
8954 | case MATCH_NO: | |
8955 | break; | |
8956 | ||
8957 | case MATCH_ERROR: | |
8958 | return MATCH_ERROR; | |
8959 | } | |
8960 | ||
8961 | next_item: | |
8962 | if (gfc_match_eos () == MATCH_YES) | |
8963 | break; | |
8964 | if (gfc_match_char (',') != MATCH_YES) | |
8965 | goto syntax; | |
8966 | } | |
8967 | ||
8968 | return MATCH_YES; | |
8969 | ||
8970 | syntax: | |
8971 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8972 | return MATCH_ERROR; | |
8973 | } | |
8974 | ||
8975 | ||
86bf520d | 8976 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8977 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8978 | type declaration or a module. */ |
8979 | ||
8980 | match | |
636dff67 | 8981 | gfc_match_private (gfc_statement *st) |
6de9cd9a | 8982 | { |
b4882698 SK |
8983 | gfc_state_data *prev; |
8984 | char c; | |
6de9cd9a DN |
8985 | |
8986 | if (gfc_match ("private") != MATCH_YES) | |
8987 | return MATCH_NO; | |
8988 | ||
b4882698 SK |
8989 | /* Try matching PRIVATE without an access-list. */ |
8990 | if (gfc_match_eos () == MATCH_YES) | |
6de9cd9a | 8991 | { |
b4882698 SK |
8992 | prev = gfc_state_stack->previous; |
8993 | if (gfc_current_state () != COMP_MODULE | |
8994 | && !(gfc_current_state () == COMP_DERIVED | |
8995 | && prev && prev->state == COMP_MODULE) | |
8996 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8997 | && prev->previous && prev->previous->state == COMP_MODULE)) | |
6de9cd9a | 8998 | { |
b4882698 SK |
8999 | gfc_error ("PRIVATE statement at %C is only allowed in the " |
9000 | "specification part of a module"); | |
9001 | return MATCH_ERROR; | |
6de9cd9a DN |
9002 | } |
9003 | ||
b4882698 SK |
9004 | *st = ST_PRIVATE; |
9005 | return MATCH_YES; | |
6de9cd9a DN |
9006 | } |
9007 | ||
b4882698 SK |
9008 | /* At this point, PRIVATE must be followed by whitespace or ::. */ |
9009 | c = gfc_peek_ascii_char (); | |
9010 | if (!gfc_is_whitespace (c) && c != ':') | |
9011 | return MATCH_NO; | |
9012 | ||
9013 | prev = gfc_state_stack->previous; | |
9014 | if (gfc_current_state () != COMP_MODULE | |
9015 | && !(gfc_current_state () == COMP_DERIVED | |
9016 | && prev && prev->state == COMP_MODULE) | |
9017 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
9018 | && prev->previous && prev->previous->state == COMP_MODULE)) | |
6de9cd9a | 9019 | { |
b4882698 SK |
9020 | gfc_error ("PRIVATE statement at %C is only allowed in the " |
9021 | "specification part of a module"); | |
9022 | return MATCH_ERROR; | |
6de9cd9a DN |
9023 | } |
9024 | ||
9025 | *st = ST_ATTR_DECL; | |
9026 | return access_attr_decl (ST_PRIVATE); | |
9027 | } | |
9028 | ||
9029 | ||
9030 | match | |
636dff67 | 9031 | gfc_match_public (gfc_statement *st) |
6de9cd9a | 9032 | { |
b4882698 | 9033 | char c; |
6de9cd9a DN |
9034 | |
9035 | if (gfc_match ("public") != MATCH_YES) | |
9036 | return MATCH_NO; | |
9037 | ||
b4882698 SK |
9038 | /* Try matching PUBLIC without an access-list. */ |
9039 | if (gfc_match_eos () == MATCH_YES) | |
9040 | { | |
9041 | if (gfc_current_state () != COMP_MODULE) | |
9042 | { | |
9043 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
9044 | "specification part of a module"); | |
9045 | return MATCH_ERROR; | |
9046 | } | |
9047 | ||
9048 | *st = ST_PUBLIC; | |
9049 | return MATCH_YES; | |
9050 | } | |
9051 | ||
9052 | /* At this point, PUBLIC must be followed by whitespace or ::. */ | |
9053 | c = gfc_peek_ascii_char (); | |
9054 | if (!gfc_is_whitespace (c) && c != ':') | |
9055 | return MATCH_NO; | |
9056 | ||
d51347f9 TB |
9057 | if (gfc_current_state () != COMP_MODULE) |
9058 | { | |
9059 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
9060 | "specification part of a module"); | |
9061 | return MATCH_ERROR; | |
9062 | } | |
9063 | ||
6de9cd9a DN |
9064 | *st = ST_ATTR_DECL; |
9065 | return access_attr_decl (ST_PUBLIC); | |
9066 | } | |
9067 | ||
9068 | ||
9069 | /* Workhorse for gfc_match_parameter. */ | |
9070 | ||
9071 | static match | |
9072 | do_parm (void) | |
9073 | { | |
9074 | gfc_symbol *sym; | |
9075 | gfc_expr *init; | |
9076 | match m; | |
524af0d6 | 9077 | bool t; |
6de9cd9a DN |
9078 | |
9079 | m = gfc_match_symbol (&sym, 0); | |
9080 | if (m == MATCH_NO) | |
9081 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
9082 | ||
9083 | if (m != MATCH_YES) | |
9084 | return m; | |
9085 | ||
9086 | if (gfc_match_char ('=') == MATCH_NO) | |
9087 | { | |
9088 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
9089 | return MATCH_ERROR; | |
9090 | } | |
9091 | ||
9092 | m = gfc_match_init_expr (&init); | |
9093 | if (m == MATCH_NO) | |
9094 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
9095 | if (m != MATCH_YES) | |
9096 | return m; | |
9097 | ||
9098 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 9099 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
9100 | { |
9101 | m = MATCH_ERROR; | |
9102 | goto cleanup; | |
9103 | } | |
9104 | ||
524af0d6 JB |
9105 | if (!gfc_check_assign_symbol (sym, NULL, init) |
9106 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
9107 | { |
9108 | m = MATCH_ERROR; | |
9109 | goto cleanup; | |
9110 | } | |
9111 | ||
1283ab12 TB |
9112 | if (sym->value) |
9113 | { | |
9114 | gfc_error ("Initializing already initialized variable at %C"); | |
9115 | m = MATCH_ERROR; | |
9116 | goto cleanup; | |
9117 | } | |
9118 | ||
7919373d | 9119 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 9120 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
9121 | |
9122 | cleanup: | |
9123 | gfc_free_expr (init); | |
9124 | return m; | |
9125 | } | |
9126 | ||
9127 | ||
9128 | /* Match a parameter statement, with the weird syntax that these have. */ | |
9129 | ||
9130 | match | |
9131 | gfc_match_parameter (void) | |
9132 | { | |
35ea947f | 9133 | const char *term = " )%t"; |
6de9cd9a DN |
9134 | match m; |
9135 | ||
9136 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
9137 | { |
9138 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
9139 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
9140 | return MATCH_NO; | |
9141 | term = " %t"; | |
9142 | } | |
6de9cd9a DN |
9143 | |
9144 | for (;;) | |
9145 | { | |
9146 | m = do_parm (); | |
9147 | if (m != MATCH_YES) | |
9148 | break; | |
9149 | ||
35ea947f | 9150 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
9151 | break; |
9152 | ||
9153 | if (gfc_match_char (',') != MATCH_YES) | |
9154 | { | |
9155 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
9156 | m = MATCH_ERROR; | |
9157 | break; | |
9158 | } | |
9159 | } | |
9160 | ||
9161 | return m; | |
9162 | } | |
9163 | ||
9164 | ||
34d567d1 FR |
9165 | match |
9166 | gfc_match_automatic (void) | |
9167 | { | |
9168 | gfc_symbol *sym; | |
9169 | match m; | |
9170 | bool seen_symbol = false; | |
9171 | ||
9172 | if (!flag_dec_static) | |
9173 | { | |
cf004230 FR |
9174 | gfc_error ("%s at %C is a DEC extension, enable with " |
9175 | "%<-fdec-static%>", | |
9176 | "AUTOMATIC" | |
9177 | ); | |
34d567d1 FR |
9178 | return MATCH_ERROR; |
9179 | } | |
9180 | ||
9181 | gfc_match (" ::"); | |
9182 | ||
9183 | for (;;) | |
9184 | { | |
9185 | m = gfc_match_symbol (&sym, 0); | |
9186 | switch (m) | |
9187 | { | |
9188 | case MATCH_NO: | |
9189 | break; | |
9190 | ||
9191 | case MATCH_ERROR: | |
9192 | return MATCH_ERROR; | |
9193 | ||
9194 | case MATCH_YES: | |
9195 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9196 | return MATCH_ERROR; | |
9197 | seen_symbol = true; | |
9198 | break; | |
9199 | } | |
9200 | ||
9201 | if (gfc_match_eos () == MATCH_YES) | |
9202 | break; | |
9203 | if (gfc_match_char (',') != MATCH_YES) | |
9204 | goto syntax; | |
9205 | } | |
9206 | ||
9207 | if (!seen_symbol) | |
9208 | { | |
9209 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9210 | return MATCH_ERROR; | |
9211 | } | |
9212 | ||
9213 | return MATCH_YES; | |
9214 | ||
9215 | syntax: | |
9216 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9217 | return MATCH_ERROR; | |
9218 | } | |
9219 | ||
9220 | ||
9221 | match | |
9222 | gfc_match_static (void) | |
9223 | { | |
9224 | gfc_symbol *sym; | |
9225 | match m; | |
9226 | bool seen_symbol = false; | |
9227 | ||
9228 | if (!flag_dec_static) | |
9229 | { | |
cf004230 FR |
9230 | gfc_error ("%s at %C is a DEC extension, enable with " |
9231 | "%<-fdec-static%>", | |
9232 | "STATIC"); | |
34d567d1 FR |
9233 | return MATCH_ERROR; |
9234 | } | |
9235 | ||
9236 | gfc_match (" ::"); | |
9237 | ||
9238 | for (;;) | |
9239 | { | |
9240 | m = gfc_match_symbol (&sym, 0); | |
9241 | switch (m) | |
9242 | { | |
9243 | case MATCH_NO: | |
9244 | break; | |
9245 | ||
9246 | case MATCH_ERROR: | |
9247 | return MATCH_ERROR; | |
9248 | ||
9249 | case MATCH_YES: | |
9250 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9251 | &gfc_current_locus)) | |
9252 | return MATCH_ERROR; | |
9253 | seen_symbol = true; | |
9254 | break; | |
9255 | } | |
9256 | ||
9257 | if (gfc_match_eos () == MATCH_YES) | |
9258 | break; | |
9259 | if (gfc_match_char (',') != MATCH_YES) | |
9260 | goto syntax; | |
9261 | } | |
9262 | ||
9263 | if (!seen_symbol) | |
9264 | { | |
9265 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9266 | return MATCH_ERROR; | |
9267 | } | |
9268 | ||
9269 | return MATCH_YES; | |
9270 | ||
9271 | syntax: | |
9272 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9273 | return MATCH_ERROR; | |
9274 | } | |
9275 | ||
9276 | ||
6de9cd9a DN |
9277 | /* Save statements have a special syntax. */ |
9278 | ||
9279 | match | |
9280 | gfc_match_save (void) | |
9281 | { | |
9056bd70 TS |
9282 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9283 | gfc_common_head *c; | |
6de9cd9a DN |
9284 | gfc_symbol *sym; |
9285 | match m; | |
9286 | ||
9287 | if (gfc_match_eos () == MATCH_YES) | |
9288 | { | |
9289 | if (gfc_current_ns->seen_save) | |
9290 | { | |
524af0d6 JB |
9291 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9292 | "follows previous SAVE statement")) | |
09e87839 | 9293 | return MATCH_ERROR; |
6de9cd9a DN |
9294 | } |
9295 | ||
9296 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9297 | return MATCH_YES; | |
9298 | } | |
9299 | ||
9300 | if (gfc_current_ns->save_all) | |
9301 | { | |
524af0d6 JB |
9302 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9303 | "blanket SAVE statement")) | |
09e87839 | 9304 | return MATCH_ERROR; |
6de9cd9a DN |
9305 | } |
9306 | ||
9307 | gfc_match (" ::"); | |
9308 | ||
9309 | for (;;) | |
9310 | { | |
9311 | m = gfc_match_symbol (&sym, 0); | |
9312 | switch (m) | |
9313 | { | |
9314 | case MATCH_YES: | |
70112e2a | 9315 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 9316 | &gfc_current_locus)) |
6de9cd9a DN |
9317 | return MATCH_ERROR; |
9318 | goto next_item; | |
9319 | ||
9320 | case MATCH_NO: | |
9321 | break; | |
9322 | ||
9323 | case MATCH_ERROR: | |
9324 | return MATCH_ERROR; | |
9325 | } | |
9326 | ||
9056bd70 | 9327 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
9328 | if (m == MATCH_ERROR) |
9329 | return MATCH_ERROR; | |
9330 | if (m == MATCH_NO) | |
9331 | goto syntax; | |
9332 | ||
53814b8f | 9333 | c = gfc_get_common (n, 0); |
9056bd70 TS |
9334 | c->saved = 1; |
9335 | ||
6de9cd9a DN |
9336 | gfc_current_ns->seen_save = 1; |
9337 | ||
9338 | next_item: | |
9339 | if (gfc_match_eos () == MATCH_YES) | |
9340 | break; | |
9341 | if (gfc_match_char (',') != MATCH_YES) | |
9342 | goto syntax; | |
9343 | } | |
9344 | ||
9345 | return MATCH_YES; | |
9346 | ||
9347 | syntax: | |
69352933 SK |
9348 | if (gfc_current_ns->seen_save) |
9349 | { | |
9350 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9351 | return MATCH_ERROR; | |
9352 | } | |
9353 | else | |
9354 | return MATCH_NO; | |
6de9cd9a DN |
9355 | } |
9356 | ||
9357 | ||
06469efd PT |
9358 | match |
9359 | gfc_match_value (void) | |
9360 | { | |
9361 | gfc_symbol *sym; | |
9362 | match m; | |
9363 | ||
9abe5e56 DK |
9364 | /* This is not allowed within a BLOCK construct! */ |
9365 | if (gfc_current_state () == COMP_BLOCK) | |
9366 | { | |
9367 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9368 | return MATCH_ERROR; | |
9369 | } | |
9370 | ||
524af0d6 | 9371 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9372 | return MATCH_ERROR; |
9373 | ||
9374 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9375 | { | |
9376 | return MATCH_ERROR; | |
9377 | } | |
9378 | ||
9379 | if (gfc_match_eos () == MATCH_YES) | |
9380 | goto syntax; | |
9381 | ||
9382 | for(;;) | |
9383 | { | |
9384 | m = gfc_match_symbol (&sym, 0); | |
9385 | switch (m) | |
9386 | { | |
9387 | case MATCH_YES: | |
524af0d6 | 9388 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9389 | return MATCH_ERROR; |
9390 | goto next_item; | |
9391 | ||
9392 | case MATCH_NO: | |
9393 | break; | |
9394 | ||
9395 | case MATCH_ERROR: | |
9396 | return MATCH_ERROR; | |
9397 | } | |
9398 | ||
9399 | next_item: | |
9400 | if (gfc_match_eos () == MATCH_YES) | |
9401 | break; | |
9402 | if (gfc_match_char (',') != MATCH_YES) | |
9403 | goto syntax; | |
9404 | } | |
9405 | ||
9406 | return MATCH_YES; | |
9407 | ||
9408 | syntax: | |
9409 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9410 | return MATCH_ERROR; | |
9411 | } | |
9412 | ||
66e4ab31 | 9413 | |
775e6c3a TB |
9414 | match |
9415 | gfc_match_volatile (void) | |
9416 | { | |
9417 | gfc_symbol *sym; | |
ba77f7ba | 9418 | char *name; |
775e6c3a TB |
9419 | match m; |
9420 | ||
524af0d6 | 9421 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9422 | return MATCH_ERROR; |
9423 | ||
9424 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9425 | { | |
9426 | return MATCH_ERROR; | |
9427 | } | |
9428 | ||
9429 | if (gfc_match_eos () == MATCH_YES) | |
9430 | goto syntax; | |
9431 | ||
9432 | for(;;) | |
9433 | { | |
f5acf0f2 | 9434 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9435 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9436 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9437 | switch (m) |
9438 | { | |
9439 | case MATCH_YES: | |
ba77f7ba SK |
9440 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9441 | strcpy (name, sym->name); | |
9442 | if (!check_function_name (name)) | |
9443 | return MATCH_ERROR; | |
be59db2d TB |
9444 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9445 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9446 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9447 | { | |
c4100eae | 9448 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9449 | "%C, which is use-/host-associated", sym->name); |
9450 | return MATCH_ERROR; | |
9451 | } | |
524af0d6 | 9452 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9453 | return MATCH_ERROR; |
9454 | goto next_item; | |
9455 | ||
9456 | case MATCH_NO: | |
9457 | break; | |
9458 | ||
9459 | case MATCH_ERROR: | |
9460 | return MATCH_ERROR; | |
9461 | } | |
9462 | ||
9463 | next_item: | |
9464 | if (gfc_match_eos () == MATCH_YES) | |
9465 | break; | |
9466 | if (gfc_match_char (',') != MATCH_YES) | |
9467 | goto syntax; | |
9468 | } | |
9469 | ||
9470 | return MATCH_YES; | |
9471 | ||
9472 | syntax: | |
9473 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9474 | return MATCH_ERROR; | |
9475 | } | |
9476 | ||
9477 | ||
1eee5628 TB |
9478 | match |
9479 | gfc_match_asynchronous (void) | |
9480 | { | |
9481 | gfc_symbol *sym; | |
ba77f7ba | 9482 | char *name; |
1eee5628 TB |
9483 | match m; |
9484 | ||
524af0d6 | 9485 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9486 | return MATCH_ERROR; |
9487 | ||
9488 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9489 | { | |
9490 | return MATCH_ERROR; | |
9491 | } | |
9492 | ||
9493 | if (gfc_match_eos () == MATCH_YES) | |
9494 | goto syntax; | |
9495 | ||
9496 | for(;;) | |
9497 | { | |
f5acf0f2 | 9498 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9499 | symbols locally. */ |
9500 | m = gfc_match_symbol (&sym, 1); | |
9501 | switch (m) | |
9502 | { | |
9503 | case MATCH_YES: | |
ba77f7ba SK |
9504 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9505 | strcpy (name, sym->name); | |
9506 | if (!check_function_name (name)) | |
9507 | return MATCH_ERROR; | |
524af0d6 | 9508 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9509 | return MATCH_ERROR; |
9510 | goto next_item; | |
9511 | ||
9512 | case MATCH_NO: | |
9513 | break; | |
9514 | ||
9515 | case MATCH_ERROR: | |
9516 | return MATCH_ERROR; | |
9517 | } | |
9518 | ||
9519 | next_item: | |
9520 | if (gfc_match_eos () == MATCH_YES) | |
9521 | break; | |
9522 | if (gfc_match_char (',') != MATCH_YES) | |
9523 | goto syntax; | |
9524 | } | |
9525 | ||
9526 | return MATCH_YES; | |
9527 | ||
9528 | syntax: | |
9529 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9530 | return MATCH_ERROR; | |
9531 | } | |
9532 | ||
9533 | ||
4668d6f9 PT |
9534 | /* Match a module procedure statement in a submodule. */ |
9535 | ||
9536 | match | |
9537 | gfc_match_submod_proc (void) | |
9538 | { | |
9539 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9540 | gfc_symbol *sym, *fsym; | |
9541 | match m; | |
9542 | gfc_formal_arglist *formal, *head, *tail; | |
9543 | ||
9544 | if (gfc_current_state () != COMP_CONTAINS | |
9545 | || !(gfc_state_stack->previous | |
70112e2a PT |
9546 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9547 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9548 | return MATCH_NO; |
9549 | ||
9550 | m = gfc_match (" module% procedure% %n", name); | |
9551 | if (m != MATCH_YES) | |
9552 | return m; | |
9553 | ||
9554 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9555 | "at %C")) | |
9556 | return MATCH_ERROR; | |
9557 | ||
9558 | if (get_proc_name (name, &sym, false)) | |
9559 | return MATCH_ERROR; | |
9560 | ||
9561 | /* Make sure that the result field is appropriately filled, even though | |
9562 | the result symbol will be replaced later on. */ | |
c064374d | 9563 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9564 | { |
c064374d PT |
9565 | if (sym->tlink->result |
9566 | && sym->tlink->result != sym->tlink) | |
9567 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9568 | else |
9569 | sym->result = sym; | |
9570 | } | |
9571 | ||
9572 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9573 | the symbol existed before. */ | |
9574 | sym->declared_at = gfc_current_locus; | |
9575 | ||
9576 | if (!sym->attr.module_procedure) | |
9577 | return MATCH_ERROR; | |
9578 | ||
9579 | /* Signal match_end to expect "end procedure". */ | |
9580 | sym->abr_modproc_decl = 1; | |
9581 | ||
9582 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9583 | sym->attr.if_source = IFSRC_DECL; | |
9584 | ||
9585 | gfc_new_block = sym; | |
9586 | ||
9587 | /* Make a new formal arglist with the symbols in the procedure | |
9588 | namespace. */ | |
9589 | head = tail = NULL; | |
9590 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9591 | { | |
9592 | if (formal == sym->formal) | |
9593 | head = tail = gfc_get_formal_arglist (); | |
9594 | else | |
9595 | { | |
9596 | tail->next = gfc_get_formal_arglist (); | |
9597 | tail = tail->next; | |
9598 | } | |
9599 | ||
9600 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9601 | goto cleanup; | |
9602 | ||
9603 | tail->sym = fsym; | |
9604 | gfc_set_sym_referenced (fsym); | |
9605 | } | |
9606 | ||
9607 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9608 | interface declaration is cleared. This allows us to add the | |
9609 | explicit interface as is done for other type of procedure. */ | |
9610 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9611 | &gfc_current_locus)) | |
9612 | return MATCH_ERROR; | |
9613 | ||
9614 | if (gfc_match_eos () != MATCH_YES) | |
9615 | { | |
9616 | gfc_syntax_error (ST_MODULE_PROC); | |
9617 | return MATCH_ERROR; | |
9618 | } | |
9619 | ||
9620 | return MATCH_YES; | |
9621 | ||
9622 | cleanup: | |
9623 | gfc_free_formal_arglist (head); | |
9624 | return MATCH_ERROR; | |
9625 | } | |
9626 | ||
9627 | ||
6de9cd9a DN |
9628 | /* Match a module procedure statement. Note that we have to modify |
9629 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9630 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9631 | |
9632 | match | |
9633 | gfc_match_modproc (void) | |
9634 | { | |
9635 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9636 | gfc_symbol *sym; | |
9637 | match m; | |
162b5a21 | 9638 | locus old_locus; |
060fca4a | 9639 | gfc_namespace *module_ns; |
2b77e908 | 9640 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9641 | |
9642 | if (gfc_state_stack->state != COMP_INTERFACE | |
9643 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9644 | || current_interface.type == INTERFACE_NAMELESS |
9645 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9646 | { |
636dff67 SK |
9647 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9648 | "interface"); | |
6de9cd9a DN |
9649 | return MATCH_ERROR; |
9650 | } | |
9651 | ||
060fca4a PT |
9652 | module_ns = gfc_current_ns->parent; |
9653 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9654 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9655 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9656 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9657 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9658 | break; |
9659 | ||
9660 | if (module_ns == NULL) | |
9661 | return MATCH_ERROR; | |
9662 | ||
2b77e908 FXC |
9663 | /* Store the current state of the interface. We will need it if we |
9664 | end up with a syntax error and need to recover. */ | |
9665 | old_interface_head = gfc_current_interface_head (); | |
9666 | ||
162b5a21 SK |
9667 | /* Check if the F2008 optional double colon appears. */ |
9668 | gfc_gobble_whitespace (); | |
9669 | old_locus = gfc_current_locus; | |
9670 | if (gfc_match ("::") == MATCH_YES) | |
9671 | { | |
524af0d6 JB |
9672 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9673 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9674 | return MATCH_ERROR; |
9675 | } | |
9676 | else | |
9677 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9678 | |
6de9cd9a DN |
9679 | for (;;) |
9680 | { | |
2b77e908 | 9681 | bool last = false; |
162b5a21 | 9682 | old_locus = gfc_current_locus; |
2b77e908 | 9683 | |
6de9cd9a DN |
9684 | m = gfc_match_name (name); |
9685 | if (m == MATCH_NO) | |
9686 | goto syntax; | |
9687 | if (m != MATCH_YES) | |
9688 | return MATCH_ERROR; | |
9689 | ||
2b77e908 FXC |
9690 | /* Check for syntax error before starting to add symbols to the |
9691 | current namespace. */ | |
9692 | if (gfc_match_eos () == MATCH_YES) | |
9693 | last = true; | |
162b5a21 | 9694 | |
2b77e908 FXC |
9695 | if (!last && gfc_match_char (',') != MATCH_YES) |
9696 | goto syntax; | |
9697 | ||
9698 | /* Now we're sure the syntax is valid, we process this item | |
9699 | further. */ | |
060fca4a | 9700 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9701 | return MATCH_ERROR; |
9702 | ||
43dfd40c SK |
9703 | if (sym->attr.intrinsic) |
9704 | { | |
9705 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9706 | "PROCEDURE", &old_locus); | |
9707 | return MATCH_ERROR; | |
9708 | } | |
9709 | ||
6de9cd9a | 9710 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9711 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9712 | return MATCH_ERROR; |
9713 | ||
524af0d6 | 9714 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9715 | return MATCH_ERROR; |
9716 | ||
71f77fd7 | 9717 | sym->attr.mod_proc = 1; |
43dfd40c | 9718 | sym->declared_at = old_locus; |
71f77fd7 | 9719 | |
2b77e908 | 9720 | if (last) |
6de9cd9a | 9721 | break; |
6de9cd9a DN |
9722 | } |
9723 | ||
9724 | return MATCH_YES; | |
9725 | ||
9726 | syntax: | |
2b77e908 FXC |
9727 | /* Restore the previous state of the interface. */ |
9728 | interface = gfc_current_interface_head (); | |
9729 | gfc_set_current_interface_head (old_interface_head); | |
9730 | ||
9731 | /* Free the new interfaces. */ | |
9732 | while (interface != old_interface_head) | |
9733 | { | |
9734 | gfc_interface *i = interface->next; | |
cede9502 | 9735 | free (interface); |
2b77e908 FXC |
9736 | interface = i; |
9737 | } | |
9738 | ||
9739 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9740 | gfc_syntax_error (ST_MODULE_PROC); |
9741 | return MATCH_ERROR; | |
9742 | } | |
9743 | ||
9744 | ||
7d1f1e61 | 9745 | /* Check a derived type that is being extended. */ |
42e3d759 | 9746 | |
7d1f1e61 PT |
9747 | static gfc_symbol* |
9748 | check_extended_derived_type (char *name) | |
9749 | { | |
9750 | gfc_symbol *extended; | |
9751 | ||
9752 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9753 | { | |
9754 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9755 | return NULL; | |
9756 | } | |
9757 | ||
42e3d759 JW |
9758 | extended = gfc_find_dt_in_generic (extended); |
9759 | ||
9760 | /* F08:C428. */ | |
7d1f1e61 PT |
9761 | if (!extended) |
9762 | { | |
c4100eae | 9763 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9764 | return NULL; |
9765 | } | |
9766 | ||
9767 | if (extended->attr.flavor != FL_DERIVED) | |
9768 | { | |
c4100eae | 9769 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9770 | "derived type", name); |
9771 | return NULL; | |
9772 | } | |
9773 | ||
9774 | if (extended->attr.is_bind_c) | |
9775 | { | |
c4100eae | 9776 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9777 | "is BIND(C)", extended->name); |
9778 | return NULL; | |
9779 | } | |
9780 | ||
9781 | if (extended->attr.sequence) | |
9782 | { | |
c4100eae | 9783 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9784 | "is a SEQUENCE type", extended->name); |
9785 | return NULL; | |
9786 | } | |
9787 | ||
9788 | return extended; | |
9789 | } | |
9790 | ||
9791 | ||
a8b3b0b6 CR |
9792 | /* Match the optional attribute specifiers for a type declaration. |
9793 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9794 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9795 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9796 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9797 | |
9798 | match | |
7d1f1e61 | 9799 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9800 | { |
a8b3b0b6 | 9801 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9802 | if (gfc_match (" , private") == MATCH_YES) |
9803 | { | |
d51347f9 | 9804 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9805 | { |
d51347f9 TB |
9806 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9807 | "specification part of a module"); | |
6de9cd9a DN |
9808 | return MATCH_ERROR; |
9809 | } | |
9810 | ||
524af0d6 | 9811 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9812 | return MATCH_ERROR; |
6de9cd9a | 9813 | } |
a8b3b0b6 | 9814 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9815 | { |
d51347f9 | 9816 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9817 | { |
d51347f9 TB |
9818 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9819 | "specification part of a module"); | |
6de9cd9a DN |
9820 | return MATCH_ERROR; |
9821 | } | |
9822 | ||
524af0d6 | 9823 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9824 | return MATCH_ERROR; |
6de9cd9a | 9825 | } |
52f49934 | 9826 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9827 | { |
9828 | /* If the type is defined to be bind(c) it then needs to make | |
9829 | sure that all fields are interoperable. This will | |
9830 | need to be a semantic check on the finished derived type. | |
9831 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9832 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9833 | return MATCH_ERROR; |
9834 | ||
9835 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9836 | } | |
52f49934 DK |
9837 | else if (gfc_match (" , abstract") == MATCH_YES) |
9838 | { | |
524af0d6 | 9839 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9840 | return MATCH_ERROR; |
9841 | ||
524af0d6 | 9842 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9843 | return MATCH_ERROR; |
9844 | } | |
524af0d6 | 9845 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9846 | { |
524af0d6 | 9847 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9848 | return MATCH_ERROR; |
9849 | } | |
a8b3b0b6 CR |
9850 | else |
9851 | return MATCH_NO; | |
9852 | ||
9853 | /* If we get here, something matched. */ | |
9854 | return MATCH_YES; | |
9855 | } | |
9856 | ||
9857 | ||
f6288c24 FR |
9858 | /* Common function for type declaration blocks similar to derived types, such |
9859 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9860 | does NOT have a generic symbol matching the name given by the user. | |
9861 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9862 | for the creation of an independent symbol. | |
6442a6f4 | 9863 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9864 | type to be created, and the flavor to add to the resulting symbol. */ |
9865 | ||
9866 | static bool | |
9867 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9868 | gfc_symbol **result) | |
9869 | { | |
9870 | gfc_symbol *sym; | |
9871 | locus where; | |
9872 | ||
9873 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9874 | ||
9875 | if (decl) | |
9876 | where = *decl; | |
9877 | else | |
9878 | where = gfc_current_locus; | |
9879 | ||
9880 | if (gfc_get_symbol (name, NULL, &sym)) | |
9881 | return false; | |
9882 | ||
9883 | if (!sym) | |
9884 | { | |
9885 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9886 | return false; | |
9887 | } | |
9888 | ||
9889 | if (sym->components != NULL || sym->attr.zero_comp) | |
9890 | { | |
2f029c08 | 9891 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9892 | sym->name, &sym->declared_at); |
9893 | return false; | |
9894 | } | |
9895 | ||
9896 | sym->declared_at = where; | |
9897 | ||
9898 | if (sym->attr.flavor != fl | |
9899 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9900 | return false; | |
9901 | ||
9902 | if (!sym->hash_value) | |
9903 | /* Set the hash for the compound name for this type. */ | |
9904 | sym->hash_value = gfc_hash_value (sym); | |
9905 | ||
9906 | /* Normally the type is expected to have been completely parsed by the time | |
9907 | a field declaration with this type is seen. For unions, maps, and nested | |
9908 | structure declarations, we need to indicate that it is okay that we | |
9909 | haven't seen any components yet. This will be updated after the structure | |
9910 | is fully parsed. */ | |
9911 | sym->attr.zero_comp = 0; | |
9912 | ||
9913 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9914 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9915 | ||
9916 | if (result) *result = sym; | |
9917 | ||
9918 | return true; | |
9919 | } | |
9920 | ||
9921 | ||
9922 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9923 | behaves identical to STRUCTURE blocks. */ | |
9924 | ||
9925 | match | |
9926 | gfc_match_map (void) | |
9927 | { | |
05b8fcb4 FR |
9928 | /* Counter used to give unique internal names to map structures. */ |
9929 | static unsigned int gfc_map_id = 0; | |
9930 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9931 | gfc_symbol *sym; | |
9932 | locus old_loc; | |
f6288c24 | 9933 | |
05b8fcb4 | 9934 | old_loc = gfc_current_locus; |
f6288c24 | 9935 | |
05b8fcb4 FR |
9936 | if (gfc_match_eos () != MATCH_YES) |
9937 | { | |
9938 | gfc_error ("Junk after MAP statement at %C"); | |
9939 | gfc_current_locus = old_loc; | |
9940 | return MATCH_ERROR; | |
9941 | } | |
f6288c24 | 9942 | |
05b8fcb4 FR |
9943 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9944 | which are invalid Fortran identifiers. */ | |
9945 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9946 | |
05b8fcb4 FR |
9947 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9948 | return MATCH_ERROR; | |
f6288c24 | 9949 | |
05b8fcb4 | 9950 | gfc_new_block = sym; |
f6288c24 | 9951 | |
05b8fcb4 | 9952 | return MATCH_YES; |
f6288c24 FR |
9953 | } |
9954 | ||
9955 | ||
9956 | /* Match the opening of a UNION block. */ | |
9957 | ||
9958 | match | |
9959 | gfc_match_union (void) | |
9960 | { | |
05b8fcb4 FR |
9961 | /* Counter used to give unique internal names to union types. */ |
9962 | static unsigned int gfc_union_id = 0; | |
9963 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9964 | gfc_symbol *sym; | |
9965 | locus old_loc; | |
f6288c24 | 9966 | |
05b8fcb4 | 9967 | old_loc = gfc_current_locus; |
f6288c24 | 9968 | |
05b8fcb4 FR |
9969 | if (gfc_match_eos () != MATCH_YES) |
9970 | { | |
9971 | gfc_error ("Junk after UNION statement at %C"); | |
9972 | gfc_current_locus = old_loc; | |
9973 | return MATCH_ERROR; | |
9974 | } | |
f6288c24 | 9975 | |
05b8fcb4 FR |
9976 | /* Unions are anonymous so we make up unique names for the symbol table |
9977 | which are invalid Fortran identifiers. */ | |
9978 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9979 | |
05b8fcb4 FR |
9980 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9981 | return MATCH_ERROR; | |
f6288c24 | 9982 | |
05b8fcb4 | 9983 | gfc_new_block = sym; |
f6288c24 | 9984 | |
05b8fcb4 | 9985 | return MATCH_YES; |
f6288c24 FR |
9986 | } |
9987 | ||
9988 | ||
9989 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9990 | matching the beginning of a derived type declaration with a few | |
9991 | twists. The resulting type symbol has no access control or other | |
9992 | interesting attributes. */ | |
9993 | ||
9994 | match | |
9995 | gfc_match_structure_decl (void) | |
9996 | { | |
05b8fcb4 FR |
9997 | /* Counter used to give unique internal names to anonymous structures. */ |
9998 | static unsigned int gfc_structure_id = 0; | |
9999 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10000 | gfc_symbol *sym; | |
10001 | match m; | |
10002 | locus where; | |
f6288c24 | 10003 | |
05b8fcb4 FR |
10004 | if (!flag_dec_structure) |
10005 | { | |
cf004230 FR |
10006 | gfc_error ("%s at %C is a DEC extension, enable with " |
10007 | "%<-fdec-structure%>", | |
10008 | "STRUCTURE"); | |
05b8fcb4 FR |
10009 | return MATCH_ERROR; |
10010 | } | |
f6288c24 | 10011 | |
05b8fcb4 | 10012 | name[0] = '\0'; |
f6288c24 | 10013 | |
05b8fcb4 FR |
10014 | m = gfc_match (" /%n/", name); |
10015 | if (m != MATCH_YES) | |
10016 | { | |
10017 | /* Non-nested structure declarations require a structure name. */ | |
10018 | if (!gfc_comp_struct (gfc_current_state ())) | |
10019 | { | |
10020 | gfc_error ("Structure name expected in non-nested structure " | |
10021 | "declaration at %C"); | |
10022 | return MATCH_ERROR; | |
10023 | } | |
10024 | /* This is an anonymous structure; make up a unique name for it | |
10025 | (upper-case letters never make it to symbol names from the source). | |
10026 | The important thing is initializing the type variable | |
10027 | and setting gfc_new_symbol, which is immediately used by | |
10028 | parse_structure () and variable_decl () to add components of | |
10029 | this type. */ | |
10030 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
10031 | } | |
f6288c24 | 10032 | |
05b8fcb4 FR |
10033 | where = gfc_current_locus; |
10034 | /* No field list allowed after non-nested structure declaration. */ | |
10035 | if (!gfc_comp_struct (gfc_current_state ()) | |
10036 | && gfc_match_eos () != MATCH_YES) | |
10037 | { | |
10038 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
10039 | return MATCH_ERROR; | |
10040 | } | |
f6288c24 | 10041 | |
05b8fcb4 FR |
10042 | /* Make sure the name is not the name of an intrinsic type. */ |
10043 | if (gfc_is_intrinsic_typename (name)) | |
10044 | { | |
2f029c08 | 10045 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
10046 | " intrinsic type", name); |
10047 | return MATCH_ERROR; | |
10048 | } | |
f6288c24 | 10049 | |
05b8fcb4 FR |
10050 | /* Store the actual type symbol for the structure with an upper-case first |
10051 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 10052 | |
51f03c6b | 10053 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 10054 | return MATCH_ERROR; |
f6288c24 | 10055 | |
05b8fcb4 FR |
10056 | gfc_new_block = sym; |
10057 | return MATCH_YES; | |
f6288c24 FR |
10058 | } |
10059 | ||
90051c26 FR |
10060 | |
10061 | /* This function does some work to determine which matcher should be used to | |
58b9de9e | 10062 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
90051c26 | 10063 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
58b9de9e | 10064 | * and [parameterized] derived type declarations. */ |
90051c26 FR |
10065 | |
10066 | match | |
10067 | gfc_match_type (gfc_statement *st) | |
10068 | { | |
10069 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10070 | match m; | |
10071 | locus old_loc; | |
10072 | ||
10073 | /* Requires -fdec. */ | |
10074 | if (!flag_dec) | |
10075 | return MATCH_NO; | |
10076 | ||
10077 | m = gfc_match ("type"); | |
10078 | if (m != MATCH_YES) | |
10079 | return m; | |
10080 | /* If we already have an error in the buffer, it is probably from failing to | |
10081 | * match a derived type data declaration. Let it happen. */ | |
10082 | else if (gfc_error_flag_test ()) | |
10083 | return MATCH_NO; | |
10084 | ||
10085 | old_loc = gfc_current_locus; | |
10086 | *st = ST_NONE; | |
10087 | ||
10088 | /* If we see an attribute list before anything else it's definitely a derived | |
10089 | * type declaration. */ | |
10090 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
58b9de9e | 10091 | goto derived; |
90051c26 FR |
10092 | |
10093 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
10094 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
10095 | m = gfc_match_name (name); | |
10096 | if (m != MATCH_YES) | |
10097 | { | |
10098 | /* Let print match if it can, otherwise throw an error from | |
10099 | * gfc_match_derived_decl. */ | |
10100 | gfc_current_locus = old_loc; | |
10101 | if (gfc_match_print () == MATCH_YES) | |
10102 | { | |
10103 | *st = ST_WRITE; | |
10104 | return MATCH_YES; | |
10105 | } | |
58b9de9e | 10106 | goto derived; |
90051c26 FR |
10107 | } |
10108 | ||
58b9de9e FR |
10109 | /* Check for EOS. */ |
10110 | if (gfc_match_eos () == MATCH_YES) | |
90051c26 FR |
10111 | { |
10112 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
10113 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
10114 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
10115 | * symbol which can be printed. */ | |
10116 | gfc_current_locus = old_loc; | |
10117 | m = gfc_match_derived_decl (); | |
10118 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
10119 | { | |
10120 | *st = ST_DERIVED_DECL; | |
10121 | return m; | |
10122 | } | |
90051c26 | 10123 | } |
58b9de9e FR |
10124 | else |
10125 | { | |
10126 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
10127 | like <type name(parameter)>. */ | |
10128 | gfc_gobble_whitespace (); | |
10129 | bool paren = gfc_peek_ascii_char () == '('; | |
10130 | if (paren) | |
10131 | { | |
10132 | if (strcmp ("is", name) == 0) | |
10133 | goto typeis; | |
10134 | else | |
10135 | goto derived; | |
10136 | } | |
10137 | } | |
10138 | ||
10139 | /* Treat TYPE... like PRINT... */ | |
10140 | gfc_current_locus = old_loc; | |
10141 | *st = ST_WRITE; | |
10142 | return gfc_match_print (); | |
90051c26 | 10143 | |
58b9de9e FR |
10144 | derived: |
10145 | gfc_current_locus = old_loc; | |
10146 | *st = ST_DERIVED_DECL; | |
10147 | return gfc_match_derived_decl (); | |
10148 | ||
10149 | typeis: | |
10150 | gfc_current_locus = old_loc; | |
10151 | *st = ST_TYPE_IS; | |
10152 | return gfc_match_type_is (); | |
90051c26 FR |
10153 | } |
10154 | ||
10155 | ||
a8b3b0b6 CR |
10156 | /* Match the beginning of a derived type declaration. If a type name |
10157 | was the result of a function, then it is possible to have a symbol | |
10158 | already to be known as a derived type yet have no components. */ | |
10159 | ||
10160 | match | |
10161 | gfc_match_derived_decl (void) | |
10162 | { | |
10163 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 10164 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 10165 | symbol_attribute attr; |
c3f34952 | 10166 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 10167 | gfc_symbol *extended; |
a8b3b0b6 CR |
10168 | match m; |
10169 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 10170 | bool seen_attr = false; |
c3f34952 | 10171 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
10172 | bool parameterized_type = false; |
10173 | bool seen_colons = false; | |
a8b3b0b6 | 10174 | |
f6288c24 | 10175 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
10176 | return MATCH_NO; |
10177 | ||
7d1f1e61 PT |
10178 | name[0] = '\0'; |
10179 | parent[0] = '\0'; | |
a8b3b0b6 | 10180 | gfc_clear_attr (&attr); |
7d1f1e61 | 10181 | extended = NULL; |
a8b3b0b6 CR |
10182 | |
10183 | do | |
10184 | { | |
7d1f1e61 | 10185 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
10186 | if (is_type_attr_spec == MATCH_ERROR) |
10187 | return MATCH_ERROR; | |
e7303e85 FXC |
10188 | if (is_type_attr_spec == MATCH_YES) |
10189 | seen_attr = true; | |
a8b3b0b6 | 10190 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 10191 | |
63a3341a PT |
10192 | /* Deal with derived type extensions. The extension attribute has |
10193 | been added to 'attr' but now the parent type must be found and | |
10194 | checked. */ | |
7d1f1e61 PT |
10195 | if (parent[0]) |
10196 | extended = check_extended_derived_type (parent); | |
10197 | ||
10198 | if (parent[0] && !extended) | |
10199 | return MATCH_ERROR; | |
10200 | ||
5bab4c96 PT |
10201 | m = gfc_match (" ::"); |
10202 | if (m == MATCH_YES) | |
10203 | { | |
10204 | seen_colons = true; | |
10205 | } | |
10206 | else if (seen_attr) | |
6de9cd9a DN |
10207 | { |
10208 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10209 | return MATCH_ERROR; | |
10210 | } | |
10211 | ||
5bab4c96 | 10212 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
10213 | if (m != MATCH_YES) |
10214 | return m; | |
10215 | ||
5bab4c96 PT |
10216 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10217 | derived type named 'is'. | |
10218 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10219 | and checking if this is a(n intrinsic) typename. his picks up | |
10220 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10221 | if (gfc_peek_ascii_char () == '(') | |
10222 | { | |
10223 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10224 | || (!seen_colons && !strcmp (name, "is"))) | |
10225 | return MATCH_NO; | |
10226 | parameterized_type = true; | |
10227 | } | |
10228 | ||
10229 | m = gfc_match_eos (); | |
10230 | if (m != MATCH_YES && !parameterized_type) | |
10231 | return m; | |
10232 | ||
e9c06563 TB |
10233 | /* Make sure the name is not the name of an intrinsic type. */ |
10234 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 10235 | { |
c4100eae | 10236 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 10237 | "type", name); |
6de9cd9a DN |
10238 | return MATCH_ERROR; |
10239 | } | |
10240 | ||
c3f34952 | 10241 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
10242 | return MATCH_ERROR; |
10243 | ||
c3f34952 | 10244 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 10245 | { |
1072bff8 SK |
10246 | if (gensym->ts.u.derived) |
10247 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10248 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10249 | else | |
10250 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10251 | gensym->name); | |
c3f34952 TB |
10252 | return MATCH_ERROR; |
10253 | } | |
10254 | ||
10255 | if (!gensym->attr.generic | |
524af0d6 | 10256 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10257 | return MATCH_ERROR; |
10258 | ||
10259 | if (!gensym->attr.function | |
524af0d6 | 10260 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10261 | return MATCH_ERROR; |
10262 | ||
e00e1954 SK |
10263 | if (gensym->attr.dummy) |
10264 | { | |
10265 | gfc_error ("Dummy argument %qs at %L cannot be a derived type at %C", | |
10266 | name, &gensym->declared_at); | |
10267 | return MATCH_ERROR; | |
10268 | } | |
10269 | ||
c3f34952 TB |
10270 | sym = gfc_find_dt_in_generic (gensym); |
10271 | ||
10272 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10273 | { | |
c4100eae | 10274 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 10275 | "defined", sym->name); |
6de9cd9a DN |
10276 | return MATCH_ERROR; |
10277 | } | |
10278 | ||
c3f34952 TB |
10279 | if (!sym) |
10280 | { | |
10281 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 10282 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 10283 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
10284 | head = gensym->generic; |
10285 | intr = gfc_get_interface (); | |
10286 | intr->sym = sym; | |
10287 | intr->where = gfc_current_locus; | |
10288 | intr->sym->declared_at = gfc_current_locus; | |
10289 | intr->next = head; | |
10290 | gensym->generic = intr; | |
10291 | gensym->attr.if_source = IFSRC_DECL; | |
10292 | } | |
10293 | ||
6de9cd9a DN |
10294 | /* The symbol may already have the derived attribute without the |
10295 | components. The ways this can happen is via a function | |
10296 | definition, an INTRINSIC statement or a subtype in another | |
10297 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 10298 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 10299 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 10300 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
10301 | return MATCH_ERROR; |
10302 | ||
6de9cd9a | 10303 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 10304 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 10305 | return MATCH_ERROR; |
c3f34952 TB |
10306 | else if (sym->attr.access == ACCESS_UNKNOWN |
10307 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 10308 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 10309 | sym->name, NULL)) |
c3f34952 TB |
10310 | return MATCH_ERROR; |
10311 | ||
10312 | if (sym->attr.access != ACCESS_UNKNOWN | |
10313 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10314 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 10315 | |
a8b3b0b6 CR |
10316 | /* See if the derived type was labeled as bind(c). */ |
10317 | if (attr.is_bind_c != 0) | |
10318 | sym->attr.is_bind_c = attr.is_bind_c; | |
10319 | ||
34523524 DK |
10320 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10321 | if (!sym->f2k_derived) | |
10322 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 10323 | |
5bab4c96 PT |
10324 | if (parameterized_type) |
10325 | { | |
276515e6 PT |
10326 | /* Ignore error or mismatches by going to the end of the statement |
10327 | in order to avoid the component declarations causing problems. */ | |
10328 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10329 | if (m != MATCH_YES) | |
10330 | gfc_error_recovery (); | |
84083a71 JW |
10331 | else |
10332 | sym->attr.pdt_template = 1; | |
5bab4c96 PT |
10333 | m = gfc_match_eos (); |
10334 | if (m != MATCH_YES) | |
f59986b2 PT |
10335 | { |
10336 | gfc_error_recovery (); | |
10337 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10338 | } | |
5bab4c96 PT |
10339 | } |
10340 | ||
7d1f1e61 PT |
10341 | if (extended && !sym->components) |
10342 | { | |
10343 | gfc_component *p; | |
5bab4c96 | 10344 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
10345 | |
10346 | /* Add the extended derived type as the first component. */ | |
10347 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
10348 | extended->refs++; |
10349 | gfc_set_sym_referenced (extended); | |
10350 | ||
10351 | p->ts.type = BT_DERIVED; | |
bc21d315 | 10352 | p->ts.u.derived = extended; |
7d1f1e61 | 10353 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 10354 | |
7c1dab0d JW |
10355 | /* Set extension level. */ |
10356 | if (extended->attr.extension == 255) | |
10357 | { | |
10358 | /* Since the extension field is 8 bit wide, we can only have | |
10359 | up to 255 extension levels. */ | |
c4100eae | 10360 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
10361 | extended->name, &extended->declared_at); |
10362 | return MATCH_ERROR; | |
10363 | } | |
10364 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
10365 | |
10366 | /* Provide the links between the extended type and its extension. */ | |
10367 | if (!extended->f2k_derived) | |
10368 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
10369 | |
10370 | /* Copy the extended type-param-name-list from the extended type, | |
10371 | append those of the extension and add the whole lot to the | |
10372 | extension. */ | |
10373 | if (extended->attr.pdt_template) | |
10374 | { | |
10375 | g = h = NULL; | |
10376 | sym->attr.pdt_template = 1; | |
10377 | for (f = extended->formal; f; f = f->next) | |
10378 | { | |
10379 | if (f == extended->formal) | |
10380 | { | |
10381 | g = gfc_get_formal_arglist (); | |
10382 | h = g; | |
10383 | } | |
10384 | else | |
10385 | { | |
10386 | g->next = gfc_get_formal_arglist (); | |
10387 | g = g->next; | |
10388 | } | |
10389 | g->sym = f->sym; | |
10390 | } | |
10391 | g->next = sym->formal; | |
10392 | sym->formal = h; | |
10393 | } | |
7d1f1e61 PT |
10394 | } |
10395 | ||
7c1dab0d JW |
10396 | if (!sym->hash_value) |
10397 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10398 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10399 | |
52f49934 DK |
10400 | /* Take over the ABSTRACT attribute. */ |
10401 | sym->attr.abstract = attr.abstract; | |
10402 | ||
6de9cd9a DN |
10403 | gfc_new_block = sym; |
10404 | ||
10405 | return MATCH_YES; | |
10406 | } | |
83d890b9 AL |
10407 | |
10408 | ||
f5acf0f2 | 10409 | /* Cray Pointees can be declared as: |
b3aefde2 | 10410 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10411 | |
32e8bb8e | 10412 | match |
83d890b9 AL |
10413 | gfc_mod_pointee_as (gfc_array_spec *as) |
10414 | { | |
10415 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10416 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10417 | as->cp_was_assumed = true; |
83d890b9 AL |
10418 | else if (as->type == AS_ASSUMED_SHAPE) |
10419 | { | |
10420 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10421 | return MATCH_ERROR; | |
10422 | } | |
10423 | return MATCH_YES; | |
10424 | } | |
25d8f0a2 TS |
10425 | |
10426 | ||
f5acf0f2 PT |
10427 | /* Match the enum definition statement, here we are trying to match |
10428 | the first line of enum definition statement. | |
25d8f0a2 TS |
10429 | Returns MATCH_YES if match is found. */ |
10430 | ||
10431 | match | |
10432 | gfc_match_enum (void) | |
10433 | { | |
10434 | match m; | |
f5acf0f2 | 10435 | |
25d8f0a2 TS |
10436 | m = gfc_match_eos (); |
10437 | if (m != MATCH_YES) | |
10438 | return m; | |
10439 | ||
524af0d6 | 10440 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10441 | return MATCH_ERROR; |
10442 | ||
10443 | return MATCH_YES; | |
10444 | } | |
10445 | ||
10446 | ||
31224396 SK |
10447 | /* Returns an initializer whose value is one higher than the value of the |
10448 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10449 | initializers value will be set to zero. The initializer's kind | |
10450 | will be set to gfc_c_int_kind. | |
10451 | ||
10452 | If -fshort-enums is given, the appropriate kind will be selected | |
10453 | later after all enumerators have been parsed. A warning is issued | |
10454 | here if an initializer exceeds gfc_c_int_kind. */ | |
10455 | ||
10456 | static gfc_expr * | |
10457 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10458 | { | |
10459 | gfc_expr *result; | |
b7e75771 | 10460 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10461 | |
10462 | mpz_init (result->value.integer); | |
10463 | ||
10464 | if (last_initializer != NULL) | |
10465 | { | |
10466 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10467 | result->where = last_initializer->where; | |
10468 | ||
10469 | if (gfc_check_integer_range (result->value.integer, | |
10470 | gfc_c_int_kind) != ARITH_OK) | |
10471 | { | |
10472 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10473 | return NULL; | |
10474 | } | |
10475 | } | |
10476 | else | |
10477 | { | |
10478 | /* Control comes here, if it's the very first enumerator and no | |
10479 | initializer has been given. It will be initialized to zero. */ | |
10480 | mpz_set_si (result->value.integer, 0); | |
10481 | } | |
10482 | ||
10483 | return result; | |
10484 | } | |
10485 | ||
10486 | ||
6133c68a TS |
10487 | /* Match a variable name with an optional initializer. When this |
10488 | subroutine is called, a variable is expected to be parsed next. | |
10489 | Depending on what is happening at the moment, updates either the | |
10490 | symbol table or the current interface. */ | |
10491 | ||
10492 | static match | |
10493 | enumerator_decl (void) | |
10494 | { | |
10495 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10496 | gfc_expr *initializer; | |
10497 | gfc_array_spec *as = NULL; | |
10498 | gfc_symbol *sym; | |
10499 | locus var_locus; | |
10500 | match m; | |
524af0d6 | 10501 | bool t; |
6133c68a TS |
10502 | locus old_locus; |
10503 | ||
10504 | initializer = NULL; | |
10505 | old_locus = gfc_current_locus; | |
10506 | ||
10507 | /* When we get here, we've just matched a list of attributes and | |
10508 | maybe a type and a double colon. The next thing we expect to see | |
10509 | is the name of the symbol. */ | |
10510 | m = gfc_match_name (name); | |
10511 | if (m != MATCH_YES) | |
10512 | goto cleanup; | |
10513 | ||
10514 | var_locus = gfc_current_locus; | |
10515 | ||
10516 | /* OK, we've successfully matched the declaration. Now put the | |
10517 | symbol in the current namespace. If we fail to create the symbol, | |
10518 | bail out. */ | |
524af0d6 | 10519 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10520 | { |
10521 | m = MATCH_ERROR; | |
10522 | goto cleanup; | |
10523 | } | |
10524 | ||
10525 | /* The double colon must be present in order to have initializers. | |
10526 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10527 | if (colon_seen) | |
10528 | { | |
10529 | if (gfc_match_char ('=') == MATCH_YES) | |
10530 | { | |
10531 | m = gfc_match_init_expr (&initializer); | |
10532 | if (m == MATCH_NO) | |
10533 | { | |
10534 | gfc_error ("Expected an initialization expression at %C"); | |
10535 | m = MATCH_ERROR; | |
10536 | } | |
10537 | ||
10538 | if (m != MATCH_YES) | |
10539 | goto cleanup; | |
10540 | } | |
10541 | } | |
10542 | ||
10543 | /* If we do not have an initializer, the initialization value of the | |
10544 | previous enumerator (stored in last_initializer) is incremented | |
10545 | by 1 and is used to initialize the current enumerator. */ | |
10546 | if (initializer == NULL) | |
31224396 | 10547 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10548 | |
6133c68a TS |
10549 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10550 | { | |
01e64c3d JJ |
10551 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10552 | &var_locus); | |
d51347f9 | 10553 | m = MATCH_ERROR; |
6133c68a TS |
10554 | goto cleanup; |
10555 | } | |
10556 | ||
10557 | /* Store this current initializer, for the next enumerator variable | |
10558 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10559 | use last_initializer below. */ | |
10560 | last_initializer = initializer; | |
10561 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10562 | ||
10563 | /* Maintain enumerator history. */ | |
10564 | gfc_find_symbol (name, NULL, 0, &sym); | |
10565 | create_enum_history (sym, last_initializer); | |
10566 | ||
524af0d6 | 10567 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10568 | |
10569 | cleanup: | |
10570 | /* Free stuff up and return. */ | |
10571 | gfc_free_expr (initializer); | |
10572 | ||
10573 | return m; | |
10574 | } | |
10575 | ||
10576 | ||
66e4ab31 | 10577 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10578 | |
10579 | match | |
10580 | gfc_match_enumerator_def (void) | |
10581 | { | |
10582 | match m; | |
524af0d6 | 10583 | bool t; |
d51347f9 | 10584 | |
25d8f0a2 | 10585 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10586 | |
25d8f0a2 TS |
10587 | m = gfc_match (" enumerator"); |
10588 | if (m != MATCH_YES) | |
10589 | return m; | |
6133c68a TS |
10590 | |
10591 | m = gfc_match (" :: "); | |
10592 | if (m == MATCH_ERROR) | |
10593 | return m; | |
10594 | ||
10595 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10596 | |
25d8f0a2 TS |
10597 | if (gfc_current_state () != COMP_ENUM) |
10598 | { | |
10599 | gfc_error ("ENUM definition statement expected before %C"); | |
10600 | gfc_free_enum_history (); | |
10601 | return MATCH_ERROR; | |
10602 | } | |
10603 | ||
10604 | (¤t_ts)->type = BT_INTEGER; | |
10605 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10606 | |
6133c68a TS |
10607 | gfc_clear_attr (¤t_attr); |
10608 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10609 | if (!t) |
25d8f0a2 | 10610 | { |
6133c68a | 10611 | m = MATCH_ERROR; |
25d8f0a2 TS |
10612 | goto cleanup; |
10613 | } | |
10614 | ||
25d8f0a2 TS |
10615 | for (;;) |
10616 | { | |
6133c68a | 10617 | m = enumerator_decl (); |
25d8f0a2 | 10618 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10619 | { |
10620 | gfc_free_enum_history (); | |
10621 | goto cleanup; | |
10622 | } | |
25d8f0a2 TS |
10623 | if (m == MATCH_NO) |
10624 | break; | |
10625 | ||
10626 | if (gfc_match_eos () == MATCH_YES) | |
10627 | goto cleanup; | |
10628 | if (gfc_match_char (',') != MATCH_YES) | |
10629 | break; | |
10630 | } | |
10631 | ||
10632 | if (gfc_current_state () == COMP_ENUM) | |
10633 | { | |
10634 | gfc_free_enum_history (); | |
10635 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10636 | m = MATCH_ERROR; | |
10637 | } | |
10638 | ||
10639 | cleanup: | |
10640 | gfc_free_array_spec (current_as); | |
10641 | current_as = NULL; | |
10642 | return m; | |
10643 | ||
10644 | } | |
10645 | ||
f6fad28e | 10646 | |
30b608eb DK |
10647 | /* Match binding attributes. */ |
10648 | ||
10649 | static match | |
713485cc | 10650 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10651 | { |
10652 | bool found_passing = false; | |
713485cc | 10653 | bool seen_ptr = false; |
90661f26 | 10654 | match m = MATCH_YES; |
30b608eb | 10655 | |
eea58adb | 10656 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10657 | this case the defaults are in there. */ |
10658 | ba->access = ACCESS_UNKNOWN; | |
10659 | ba->pass_arg = NULL; | |
10660 | ba->pass_arg_num = 0; | |
10661 | ba->nopass = 0; | |
10662 | ba->non_overridable = 0; | |
b0e5fa94 | 10663 | ba->deferred = 0; |
90661f26 | 10664 | ba->ppc = ppc; |
30b608eb DK |
10665 | |
10666 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10667 | m = gfc_match_char (','); |
10668 | if (m == MATCH_NO) | |
10669 | goto done; | |
30b608eb DK |
10670 | |
10671 | do | |
10672 | { | |
e157f736 DK |
10673 | /* Access specifier. */ |
10674 | ||
10675 | m = gfc_match (" public"); | |
30b608eb DK |
10676 | if (m == MATCH_ERROR) |
10677 | goto error; | |
10678 | if (m == MATCH_YES) | |
10679 | { | |
e157f736 | 10680 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10681 | { |
e157f736 | 10682 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10683 | goto error; |
10684 | } | |
10685 | ||
e157f736 | 10686 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10687 | continue; |
10688 | } | |
10689 | ||
e157f736 | 10690 | m = gfc_match (" private"); |
30b608eb DK |
10691 | if (m == MATCH_ERROR) |
10692 | goto error; | |
10693 | if (m == MATCH_YES) | |
10694 | { | |
e157f736 | 10695 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10696 | { |
e157f736 | 10697 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10698 | goto error; |
10699 | } | |
10700 | ||
e157f736 | 10701 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10702 | continue; |
10703 | } | |
10704 | ||
e157f736 DK |
10705 | /* If inside GENERIC, the following is not allowed. */ |
10706 | if (!generic) | |
30b608eb | 10707 | { |
30b608eb | 10708 | |
e157f736 DK |
10709 | /* NOPASS flag. */ |
10710 | m = gfc_match (" nopass"); | |
10711 | if (m == MATCH_ERROR) | |
10712 | goto error; | |
10713 | if (m == MATCH_YES) | |
30b608eb | 10714 | { |
e157f736 DK |
10715 | if (found_passing) |
10716 | { | |
10717 | gfc_error ("Binding attributes already specify passing," | |
10718 | " illegal NOPASS at %C"); | |
10719 | goto error; | |
10720 | } | |
10721 | ||
10722 | found_passing = true; | |
10723 | ba->nopass = 1; | |
10724 | continue; | |
30b608eb DK |
10725 | } |
10726 | ||
e157f736 DK |
10727 | /* PASS possibly including argument. */ |
10728 | m = gfc_match (" pass"); | |
10729 | if (m == MATCH_ERROR) | |
10730 | goto error; | |
10731 | if (m == MATCH_YES) | |
30b608eb | 10732 | { |
e157f736 DK |
10733 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10734 | ||
10735 | if (found_passing) | |
10736 | { | |
10737 | gfc_error ("Binding attributes already specify passing," | |
10738 | " illegal PASS at %C"); | |
10739 | goto error; | |
10740 | } | |
10741 | ||
10742 | m = gfc_match (" ( %n )", arg); | |
10743 | if (m == MATCH_ERROR) | |
10744 | goto error; | |
10745 | if (m == MATCH_YES) | |
51f03c6b | 10746 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10747 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10748 | ||
10749 | found_passing = true; | |
10750 | ba->nopass = 0; | |
10751 | continue; | |
30b608eb DK |
10752 | } |
10753 | ||
713485cc JW |
10754 | if (ppc) |
10755 | { | |
10756 | /* POINTER flag. */ | |
10757 | m = gfc_match (" pointer"); | |
10758 | if (m == MATCH_ERROR) | |
10759 | goto error; | |
10760 | if (m == MATCH_YES) | |
10761 | { | |
10762 | if (seen_ptr) | |
10763 | { | |
10764 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10765 | goto error; | |
10766 | } | |
10767 | ||
10768 | seen_ptr = true; | |
713485cc JW |
10769 | continue; |
10770 | } | |
10771 | } | |
10772 | else | |
10773 | { | |
10774 | /* NON_OVERRIDABLE flag. */ | |
10775 | m = gfc_match (" non_overridable"); | |
10776 | if (m == MATCH_ERROR) | |
10777 | goto error; | |
10778 | if (m == MATCH_YES) | |
10779 | { | |
10780 | if (ba->non_overridable) | |
10781 | { | |
10782 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10783 | goto error; | |
10784 | } | |
10785 | ||
10786 | ba->non_overridable = 1; | |
10787 | continue; | |
10788 | } | |
10789 | ||
10790 | /* DEFERRED flag. */ | |
10791 | m = gfc_match (" deferred"); | |
10792 | if (m == MATCH_ERROR) | |
10793 | goto error; | |
10794 | if (m == MATCH_YES) | |
10795 | { | |
10796 | if (ba->deferred) | |
10797 | { | |
10798 | gfc_error ("Duplicate DEFERRED at %C"); | |
10799 | goto error; | |
10800 | } | |
10801 | ||
10802 | ba->deferred = 1; | |
10803 | continue; | |
10804 | } | |
10805 | } | |
10806 | ||
30b608eb DK |
10807 | } |
10808 | ||
10809 | /* Nothing matching found. */ | |
e157f736 DK |
10810 | if (generic) |
10811 | gfc_error ("Expected access-specifier at %C"); | |
10812 | else | |
10813 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10814 | goto error; |
10815 | } | |
10816 | while (gfc_match_char (',') == MATCH_YES); | |
10817 | ||
b0e5fa94 DK |
10818 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10819 | if (ba->non_overridable && ba->deferred) | |
10820 | { | |
1fe61adf | 10821 | gfc_error ("NON_OVERRIDABLE and DEFERRED cannot both appear at %C"); |
b0e5fa94 DK |
10822 | goto error; |
10823 | } | |
10824 | ||
90661f26 JW |
10825 | m = MATCH_YES; |
10826 | ||
10827 | done: | |
e157f736 | 10828 | if (ba->access == ACCESS_UNKNOWN) |
d4beaf2a JW |
10829 | ba->access = ppc ? gfc_current_block()->component_access |
10830 | : gfc_typebound_default_access; | |
e157f736 | 10831 | |
713485cc JW |
10832 | if (ppc && !seen_ptr) |
10833 | { | |
10834 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10835 | " at %C"); | |
10836 | goto error; | |
10837 | } | |
10838 | ||
90661f26 | 10839 | return m; |
30b608eb DK |
10840 | |
10841 | error: | |
30b608eb DK |
10842 | return MATCH_ERROR; |
10843 | } | |
10844 | ||
10845 | ||
10846 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10847 | ||
10848 | static match | |
10849 | match_procedure_in_type (void) | |
10850 | { | |
10851 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10852 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10853 | char* target = NULL, *ifc = NULL; |
3e15518b | 10854 | gfc_typebound_proc tb; |
30b608eb DK |
10855 | bool seen_colons; |
10856 | bool seen_attrs; | |
10857 | match m; | |
10858 | gfc_symtree* stree; | |
10859 | gfc_namespace* ns; | |
10860 | gfc_symbol* block; | |
1be17993 | 10861 | int num; |
30b608eb DK |
10862 | |
10863 | /* Check current state. */ | |
10864 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10865 | block = gfc_state_stack->previous->sym; | |
10866 | gcc_assert (block); | |
10867 | ||
b0e5fa94 | 10868 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10869 | if (gfc_match (" (") == MATCH_YES) |
10870 | { | |
b0e5fa94 DK |
10871 | m = gfc_match_name (target_buf); |
10872 | if (m == MATCH_ERROR) | |
10873 | return m; | |
10874 | if (m != MATCH_YES) | |
10875 | { | |
a4d9b221 | 10876 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10877 | return MATCH_ERROR; |
10878 | } | |
10879 | ||
10880 | if (gfc_match (" )") != MATCH_YES) | |
10881 | { | |
a4d9b221 | 10882 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10883 | return MATCH_ERROR; |
10884 | } | |
10885 | ||
1be17993 | 10886 | ifc = target_buf; |
30b608eb DK |
10887 | } |
10888 | ||
10889 | /* Construct the data structure. */ | |
ff5b6492 | 10890 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10891 | tb.where = gfc_current_locus; |
30b608eb DK |
10892 | |
10893 | /* Match binding attributes. */ | |
3e15518b | 10894 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10895 | if (m == MATCH_ERROR) |
10896 | return m; | |
10897 | seen_attrs = (m == MATCH_YES); | |
10898 | ||
1be17993 | 10899 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10900 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10901 | { |
10902 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10903 | return MATCH_ERROR; | |
10904 | } | |
3e15518b | 10905 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10906 | { |
10907 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10908 | return MATCH_ERROR; | |
10909 | } | |
10910 | ||
30b608eb DK |
10911 | /* Match the colons. */ |
10912 | m = gfc_match (" ::"); | |
10913 | if (m == MATCH_ERROR) | |
10914 | return m; | |
10915 | seen_colons = (m == MATCH_YES); | |
10916 | if (seen_attrs && !seen_colons) | |
10917 | { | |
a4d9b221 | 10918 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10919 | return MATCH_ERROR; |
10920 | } | |
10921 | ||
f5acf0f2 | 10922 | /* Match the binding names. */ |
1be17993 | 10923 | for(num=1;;num++) |
30b608eb | 10924 | { |
1be17993 JW |
10925 | m = gfc_match_name (name); |
10926 | if (m == MATCH_ERROR) | |
10927 | return m; | |
10928 | if (m == MATCH_NO) | |
b0e5fa94 | 10929 | { |
1be17993 | 10930 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10931 | return MATCH_ERROR; |
10932 | } | |
10933 | ||
524af0d6 | 10934 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10935 | return MATCH_ERROR; |
30b608eb | 10936 | |
1be17993 JW |
10937 | /* Try to match the '=> target', if it's there. */ |
10938 | target = ifc; | |
10939 | m = gfc_match (" =>"); | |
30b608eb DK |
10940 | if (m == MATCH_ERROR) |
10941 | return m; | |
1be17993 | 10942 | if (m == MATCH_YES) |
30b608eb | 10943 | { |
3e15518b | 10944 | if (tb.deferred) |
1be17993 | 10945 | { |
a4d9b221 | 10946 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10947 | return MATCH_ERROR; |
10948 | } | |
10949 | ||
10950 | if (!seen_colons) | |
10951 | { | |
a4d9b221 | 10952 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10953 | " at %C"); |
10954 | return MATCH_ERROR; | |
10955 | } | |
10956 | ||
10957 | m = gfc_match_name (target_buf); | |
10958 | if (m == MATCH_ERROR) | |
10959 | return m; | |
10960 | if (m == MATCH_NO) | |
10961 | { | |
a4d9b221 | 10962 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10963 | return MATCH_ERROR; |
10964 | } | |
10965 | target = target_buf; | |
30b608eb | 10966 | } |
30b608eb | 10967 | |
1be17993 JW |
10968 | /* If no target was found, it has the same name as the binding. */ |
10969 | if (!target) | |
10970 | target = name; | |
30b608eb | 10971 | |
1be17993 JW |
10972 | /* Get the namespace to insert the symbols into. */ |
10973 | ns = block->f2k_derived; | |
10974 | gcc_assert (ns); | |
30b608eb | 10975 | |
1be17993 | 10976 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10977 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10978 | { |
c4100eae | 10979 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10980 | "is not ABSTRACT", block->name); |
10981 | return MATCH_ERROR; | |
10982 | } | |
30b608eb | 10983 | |
1be17993 | 10984 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10985 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10986 | be already there but then typebound is still NULL. */ |
10987 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10988 | if (stree && stree->n.tb) |
1be17993 | 10989 | { |
c4100eae MLI |
10990 | gfc_error ("There is already a procedure with binding name %qs for " |
10991 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10992 | return MATCH_ERROR; |
10993 | } | |
b0e5fa94 | 10994 | |
1be17993 | 10995 | /* Insert it and set attributes. */ |
30b608eb | 10996 | |
9f23af48 MM |
10997 | if (!stree) |
10998 | { | |
10999 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
11000 | gcc_assert (stree); | |
11001 | } | |
3e15518b | 11002 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 11003 | |
3e15518b JW |
11004 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
11005 | false)) | |
1be17993 | 11006 | return MATCH_ERROR; |
3e15518b | 11007 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
11008 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
11009 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 11010 | |
1be17993 JW |
11011 | if (gfc_match_eos () == MATCH_YES) |
11012 | return MATCH_YES; | |
11013 | if (gfc_match_char (',') != MATCH_YES) | |
11014 | goto syntax; | |
e34ccb4c | 11015 | } |
30b608eb | 11016 | |
1be17993 JW |
11017 | syntax: |
11018 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
11019 | return MATCH_ERROR; | |
30b608eb DK |
11020 | } |
11021 | ||
11022 | ||
e157f736 DK |
11023 | /* Match a GENERIC procedure binding inside a derived type. */ |
11024 | ||
11025 | match | |
11026 | gfc_match_generic (void) | |
11027 | { | |
11028 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 11029 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
11030 | gfc_symbol* block; |
11031 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
11032 | gfc_typebound_proc* tb; | |
e157f736 | 11033 | gfc_namespace* ns; |
94747289 DK |
11034 | interface_type op_type; |
11035 | gfc_intrinsic_op op; | |
e157f736 DK |
11036 | match m; |
11037 | ||
11038 | /* Check current state. */ | |
11039 | if (gfc_current_state () == COMP_DERIVED) | |
11040 | { | |
11041 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
11042 | return MATCH_ERROR; | |
11043 | } | |
11044 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
11045 | return MATCH_NO; | |
11046 | block = gfc_state_stack->previous->sym; | |
11047 | ns = block->f2k_derived; | |
11048 | gcc_assert (block && ns); | |
11049 | ||
ff5b6492 MM |
11050 | memset (&tbattr, 0, sizeof (tbattr)); |
11051 | tbattr.where = gfc_current_locus; | |
11052 | ||
e157f736 | 11053 | /* See if we get an access-specifier. */ |
713485cc | 11054 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
11055 | if (m == MATCH_ERROR) |
11056 | goto error; | |
11057 | ||
11058 | /* Now the colons, those are required. */ | |
11059 | if (gfc_match (" ::") != MATCH_YES) | |
11060 | { | |
a4d9b221 | 11061 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
11062 | goto error; |
11063 | } | |
11064 | ||
94747289 DK |
11065 | /* Match the binding name; depending on type (operator / generic) format |
11066 | it for future error messages into bind_name. */ | |
f5acf0f2 | 11067 | |
94747289 | 11068 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
11069 | if (m == MATCH_ERROR) |
11070 | return MATCH_ERROR; | |
11071 | if (m == MATCH_NO) | |
11072 | { | |
94747289 | 11073 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
11074 | goto error; |
11075 | } | |
11076 | ||
94747289 | 11077 | switch (op_type) |
e157f736 | 11078 | { |
94747289 | 11079 | case INTERFACE_GENERIC: |
e73d3ca6 | 11080 | case INTERFACE_DTIO: |
94747289 DK |
11081 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
11082 | break; | |
f5acf0f2 | 11083 | |
94747289 DK |
11084 | case INTERFACE_USER_OP: |
11085 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
11086 | break; | |
f5acf0f2 | 11087 | |
94747289 DK |
11088 | case INTERFACE_INTRINSIC_OP: |
11089 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
11090 | gfc_op2string (op)); | |
11091 | break; | |
11092 | ||
377e37c1 SK |
11093 | case INTERFACE_NAMELESS: |
11094 | gfc_error ("Malformed GENERIC statement at %C"); | |
11095 | goto error; | |
11096 | break; | |
11097 | ||
94747289 DK |
11098 | default: |
11099 | gcc_unreachable (); | |
11100 | } | |
e34ccb4c | 11101 | |
94747289 DK |
11102 | /* Match the required =>. */ |
11103 | if (gfc_match (" =>") != MATCH_YES) | |
11104 | { | |
a4d9b221 | 11105 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
11106 | goto error; |
11107 | } | |
f5acf0f2 | 11108 | |
94747289 DK |
11109 | /* Try to find existing GENERIC binding with this name / for this operator; |
11110 | if there is something, check that it is another GENERIC and then extend | |
11111 | it rather than building a new node. Otherwise, create it and put it | |
11112 | at the right position. */ | |
11113 | ||
11114 | switch (op_type) | |
11115 | { | |
e73d3ca6 | 11116 | case INTERFACE_DTIO: |
94747289 DK |
11117 | case INTERFACE_USER_OP: |
11118 | case INTERFACE_GENERIC: | |
11119 | { | |
11120 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
11121 | gfc_symtree* st; | |
11122 | ||
11123 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 11124 | tb = st ? st->n.tb : NULL; |
94747289 DK |
11125 | break; |
11126 | } | |
11127 | ||
11128 | case INTERFACE_INTRINSIC_OP: | |
11129 | tb = ns->tb_op[op]; | |
11130 | break; | |
11131 | ||
11132 | default: | |
11133 | gcc_unreachable (); | |
11134 | } | |
11135 | ||
11136 | if (tb) | |
11137 | { | |
e34ccb4c | 11138 | if (!tb->is_generic) |
e157f736 | 11139 | { |
94747289 | 11140 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 11141 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 11142 | " %qs for the derived type %qs at %C", |
94747289 | 11143 | bind_name, block->name); |
e157f736 DK |
11144 | goto error; |
11145 | } | |
11146 | ||
e157f736 DK |
11147 | if (tb->access != tbattr.access) |
11148 | { | |
11149 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 11150 | " defined binding %qs", bind_name); |
e157f736 DK |
11151 | goto error; |
11152 | } | |
11153 | } | |
11154 | else | |
11155 | { | |
3e15518b | 11156 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
11157 | tb->where = gfc_current_locus; |
11158 | tb->access = tbattr.access; | |
11159 | tb->is_generic = 1; | |
11160 | tb->u.generic = NULL; | |
94747289 DK |
11161 | |
11162 | switch (op_type) | |
11163 | { | |
e73d3ca6 | 11164 | case INTERFACE_DTIO: |
94747289 DK |
11165 | case INTERFACE_GENERIC: |
11166 | case INTERFACE_USER_OP: | |
11167 | { | |
11168 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
11169 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
11170 | &ns->tb_sym_root, name); | |
94747289 DK |
11171 | gcc_assert (st); |
11172 | st->n.tb = tb; | |
11173 | ||
11174 | break; | |
11175 | } | |
f5acf0f2 | 11176 | |
94747289 DK |
11177 | case INTERFACE_INTRINSIC_OP: |
11178 | ns->tb_op[op] = tb; | |
11179 | break; | |
11180 | ||
11181 | default: | |
11182 | gcc_unreachable (); | |
11183 | } | |
e157f736 DK |
11184 | } |
11185 | ||
11186 | /* Now, match all following names as specific targets. */ | |
11187 | do | |
11188 | { | |
11189 | gfc_symtree* target_st; | |
11190 | gfc_tbp_generic* target; | |
11191 | ||
11192 | m = gfc_match_name (name); | |
11193 | if (m == MATCH_ERROR) | |
11194 | goto error; | |
11195 | if (m == MATCH_NO) | |
11196 | { | |
11197 | gfc_error ("Expected specific binding name at %C"); | |
11198 | goto error; | |
11199 | } | |
11200 | ||
e34ccb4c | 11201 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
11202 | |
11203 | /* See if this is a duplicate specification. */ | |
11204 | for (target = tb->u.generic; target; target = target->next) | |
11205 | if (target_st == target->specific_st) | |
11206 | { | |
c4100eae MLI |
11207 | gfc_error ("%qs already defined as specific binding for the" |
11208 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
11209 | goto error; |
11210 | } | |
11211 | ||
e157f736 DK |
11212 | target = gfc_get_tbp_generic (); |
11213 | target->specific_st = target_st; | |
11214 | target->specific = NULL; | |
11215 | target->next = tb->u.generic; | |
218e1228 TB |
11216 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11217 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
11218 | tb->u.generic = target; |
11219 | } | |
11220 | while (gfc_match (" ,") == MATCH_YES); | |
11221 | ||
11222 | /* Here should be the end. */ | |
11223 | if (gfc_match_eos () != MATCH_YES) | |
11224 | { | |
11225 | gfc_error ("Junk after GENERIC binding at %C"); | |
11226 | goto error; | |
11227 | } | |
11228 | ||
11229 | return MATCH_YES; | |
11230 | ||
11231 | error: | |
11232 | return MATCH_ERROR; | |
11233 | } | |
11234 | ||
11235 | ||
34523524 DK |
11236 | /* Match a FINAL declaration inside a derived type. */ |
11237 | ||
11238 | match | |
11239 | gfc_match_final_decl (void) | |
11240 | { | |
11241 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11242 | gfc_symbol* sym; | |
11243 | match m; | |
11244 | gfc_namespace* module_ns; | |
11245 | bool first, last; | |
30b608eb | 11246 | gfc_symbol* block; |
34523524 | 11247 | |
33344e0f JW |
11248 | if (gfc_current_form == FORM_FREE) |
11249 | { | |
11250 | char c = gfc_peek_ascii_char (); | |
11251 | if (!gfc_is_whitespace (c) && c != ':') | |
11252 | return MATCH_NO; | |
11253 | } | |
f5acf0f2 | 11254 | |
30b608eb | 11255 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 11256 | { |
33344e0f JW |
11257 | if (gfc_current_form == FORM_FIXED) |
11258 | return MATCH_NO; | |
11259 | ||
34523524 | 11260 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 11261 | "CONTAINS section"); |
34523524 DK |
11262 | return MATCH_ERROR; |
11263 | } | |
11264 | ||
30b608eb DK |
11265 | block = gfc_state_stack->previous->sym; |
11266 | gcc_assert (block); | |
34523524 | 11267 | |
30b608eb DK |
11268 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11269 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
11270 | { |
11271 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11272 | " specification part of a MODULE"); | |
11273 | return MATCH_ERROR; | |
11274 | } | |
11275 | ||
11276 | module_ns = gfc_current_ns; | |
11277 | gcc_assert (module_ns); | |
11278 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11279 | ||
11280 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11281 | if (gfc_match (" ::") == MATCH_ERROR) | |
11282 | return MATCH_ERROR; | |
11283 | ||
11284 | /* Match the sequence of procedure names. */ | |
11285 | first = true; | |
11286 | last = false; | |
11287 | do | |
11288 | { | |
11289 | gfc_finalizer* f; | |
11290 | ||
11291 | if (first && gfc_match_eos () == MATCH_YES) | |
11292 | { | |
11293 | gfc_error ("Empty FINAL at %C"); | |
11294 | return MATCH_ERROR; | |
11295 | } | |
11296 | ||
11297 | m = gfc_match_name (name); | |
11298 | if (m == MATCH_NO) | |
11299 | { | |
11300 | gfc_error ("Expected module procedure name at %C"); | |
11301 | return MATCH_ERROR; | |
11302 | } | |
11303 | else if (m != MATCH_YES) | |
11304 | return MATCH_ERROR; | |
11305 | ||
11306 | if (gfc_match_eos () == MATCH_YES) | |
11307 | last = true; | |
11308 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11309 | { | |
a4d9b221 | 11310 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
11311 | return MATCH_ERROR; |
11312 | } | |
11313 | ||
11314 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11315 | { | |
c4100eae | 11316 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
11317 | return MATCH_ERROR; |
11318 | } | |
11319 | ||
11320 | /* Mark the symbol as module procedure. */ | |
11321 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 11322 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
11323 | return MATCH_ERROR; |
11324 | ||
11325 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 11326 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 11327 | if (f->proc_sym == sym) |
34523524 | 11328 | { |
546c8974 | 11329 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
11330 | name); |
11331 | return MATCH_ERROR; | |
11332 | } | |
11333 | ||
11334 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 11335 | gcc_assert (block->f2k_derived); |
2050626a | 11336 | sym->refs++; |
ece3f663 | 11337 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
11338 | f->proc_sym = sym; |
11339 | f->proc_tree = NULL; | |
34523524 | 11340 | f->where = gfc_current_locus; |
30b608eb DK |
11341 | f->next = block->f2k_derived->finalizers; |
11342 | block->f2k_derived->finalizers = f; | |
34523524 DK |
11343 | |
11344 | first = false; | |
11345 | } | |
11346 | while (!last); | |
11347 | ||
11348 | return MATCH_YES; | |
11349 | } | |
08a6b8e0 TB |
11350 | |
11351 | ||
11352 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
11353 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11354 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11355 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11356 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11357 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11358 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11359 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
11360 | }; |
11361 | ||
11362 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11363 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11364 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11365 | ||
11366 | TODO: We should support all GCC attributes using the same syntax for | |
11367 | the attribute list, i.e. the list in C | |
11368 | __attributes(( attribute-list )) | |
11369 | matches then | |
11370 | !GCC$ ATTRIBUTES attribute-list :: | |
11371 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11372 | saved into a TREE. | |
11373 | ||
11374 | As there is absolutely no risk of confusion, we should never return | |
11375 | MATCH_NO. */ | |
11376 | match | |
11377 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 11378 | { |
08a6b8e0 TB |
11379 | symbol_attribute attr; |
11380 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11381 | unsigned id; | |
11382 | gfc_symbol *sym; | |
11383 | match m; | |
11384 | ||
11385 | gfc_clear_attr (&attr); | |
11386 | for(;;) | |
11387 | { | |
11388 | char ch; | |
11389 | ||
11390 | if (gfc_match_name (name) != MATCH_YES) | |
11391 | return MATCH_ERROR; | |
11392 | ||
11393 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11394 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11395 | break; | |
11396 | ||
11397 | if (id == EXT_ATTR_LAST) | |
11398 | { | |
11399 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11400 | return MATCH_ERROR; | |
11401 | } | |
11402 | ||
524af0d6 | 11403 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11404 | return MATCH_ERROR; |
11405 | ||
11406 | gfc_gobble_whitespace (); | |
11407 | ch = gfc_next_ascii_char (); | |
11408 | if (ch == ':') | |
11409 | { | |
11410 | /* This is the successful exit condition for the loop. */ | |
11411 | if (gfc_next_ascii_char () == ':') | |
11412 | break; | |
11413 | } | |
11414 | ||
11415 | if (ch == ',') | |
11416 | continue; | |
11417 | ||
11418 | goto syntax; | |
11419 | } | |
11420 | ||
11421 | if (gfc_match_eos () == MATCH_YES) | |
11422 | goto syntax; | |
11423 | ||
11424 | for(;;) | |
11425 | { | |
11426 | m = gfc_match_name (name); | |
11427 | if (m != MATCH_YES) | |
11428 | return m; | |
11429 | ||
11430 | if (find_special (name, &sym, true)) | |
11431 | return MATCH_ERROR; | |
f5acf0f2 | 11432 | |
08a6b8e0 TB |
11433 | sym->attr.ext_attr |= attr.ext_attr; |
11434 | ||
11435 | if (gfc_match_eos () == MATCH_YES) | |
11436 | break; | |
11437 | ||
11438 | if (gfc_match_char (',') != MATCH_YES) | |
11439 | goto syntax; | |
11440 | } | |
11441 | ||
11442 | return MATCH_YES; | |
11443 | ||
11444 | syntax: | |
11445 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11446 | return MATCH_ERROR; | |
11447 | } | |
170a8bd6 EB |
11448 | |
11449 | ||
11450 | /* Match a !GCC$ UNROLL statement of the form: | |
11451 | !GCC$ UNROLL n | |
11452 | ||
11453 | The parameter n is the number of times we are supposed to unroll. | |
11454 | ||
11455 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11456 | match | |
11457 | gfc_match_gcc_unroll (void) | |
11458 | { | |
11459 | int value; | |
11460 | ||
11461 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11462 | { | |
11463 | if (value < 0 || value > USHRT_MAX) | |
11464 | { | |
11465 | gfc_error ("%<GCC unroll%> directive requires a" | |
11466 | " non-negative integral constant" | |
11467 | " less than or equal to %u at %C", | |
11468 | USHRT_MAX | |
11469 | ); | |
11470 | return MATCH_ERROR; | |
11471 | } | |
11472 | if (gfc_match_eos () == MATCH_YES) | |
11473 | { | |
11474 | directive_unroll = value == 0 ? 1 : value; | |
11475 | return MATCH_YES; | |
11476 | } | |
11477 | } | |
11478 | ||
11479 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11480 | return MATCH_ERROR; | |
11481 | } | |
facf0354 | 11482 | |
e8cecccc | 11483 | /* Match a !GCC$ builtin (b) attributes simd flags if('target') form: |
facf0354 ML |
11484 | |
11485 | The parameter b is name of a middle-end built-in. | |
e8cecccc ML |
11486 | FLAGS is optional and must be one of: |
11487 | - (inbranch) | |
11488 | - (notinbranch) | |
11489 | ||
11490 | IF('target') is optional and TARGET is a name of a multilib ABI. | |
facf0354 ML |
11491 | |
11492 | When we come here, we have already matched the !GCC$ builtin string. */ | |
e8cecccc | 11493 | |
facf0354 ML |
11494 | match |
11495 | gfc_match_gcc_builtin (void) | |
11496 | { | |
11497 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
e8cecccc | 11498 | char target[GFC_MAX_SYMBOL_LEN + 1]; |
facf0354 ML |
11499 | |
11500 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11501 | return MATCH_ERROR; | |
11502 | ||
11503 | gfc_simd_clause clause = SIMD_NONE; | |
11504 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11505 | clause = SIMD_NOTINBRANCH; | |
11506 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11507 | clause = SIMD_INBRANCH; | |
11508 | ||
e8cecccc ML |
11509 | if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES) |
11510 | { | |
11511 | const char *abi = targetm.get_multilib_abi_name (); | |
11512 | if (abi == NULL || strcmp (abi, target) != 0) | |
11513 | return MATCH_YES; | |
11514 | } | |
11515 | ||
facf0354 ML |
11516 | if (gfc_vectorized_builtins == NULL) |
11517 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11518 | ||
11519 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11520 | sprintf (r, "__builtin_%s", builtin); | |
11521 | ||
11522 | bool existed; | |
11523 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11524 | value |= clause; | |
11525 | if (existed) | |
11526 | free (r); | |
11527 | ||
11528 | return MATCH_YES; | |
11529 | } |