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6de9cd9a | 1 | /* Declaration statement matcher |
85ec4feb | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
2adfab87 AM |
24 | #include "options.h" |
25 | #include "tree.h" | |
6de9cd9a | 26 | #include "gfortran.h" |
2adfab87 | 27 | #include "stringpool.h" |
6de9cd9a DN |
28 | #include "match.h" |
29 | #include "parse.h" | |
b7e75771 | 30 | #include "constructor.h" |
ca39e6f2 FXC |
31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
37 | |
38 | ||
524af0d6 | 39 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
40 | |
41 | ||
2054fc29 | 42 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
46fa431d | 47 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
6f855a26 | 57 | static int attr_seen; |
6de9cd9a | 58 | |
a8b3b0b6 | 59 | /* The current binding label (if any). */ |
9975a30b | 60 | static const char* curr_binding_label; |
a8b3b0b6 CR |
61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
25d8f0a2 TS |
68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
6de9cd9a DN |
92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
1c8bcdf7 | 96 | bool gfc_matching_function; |
e2d29968 | 97 | |
170a8bd6 EB |
98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
5bab4c96 PT |
101 | /* If a kind expression of a component of a parameterized derived type is |
102 | parameterized, temporarily store the expression here. */ | |
103 | static gfc_expr *saved_kind_expr = NULL; | |
104 | ||
105 | /* Used to store the parameter list arising in a PDT declaration and | |
106 | in the typespec of a PDT variable or component. */ | |
107 | static gfc_actual_arglist *decl_type_param_list; | |
108 | static gfc_actual_arglist *type_param_spec_list; | |
109 | ||
294fbfc8 TS |
110 | /********************* DATA statement subroutines *********************/ |
111 | ||
2220652d PT |
112 | static bool in_match_data = false; |
113 | ||
114 | bool | |
115 | gfc_in_match_data (void) | |
116 | { | |
117 | return in_match_data; | |
118 | } | |
119 | ||
ca39e6f2 FXC |
120 | static void |
121 | set_in_match_data (bool set_value) | |
2220652d PT |
122 | { |
123 | in_match_data = set_value; | |
124 | } | |
125 | ||
294fbfc8 TS |
126 | /* Free a gfc_data_variable structure and everything beneath it. */ |
127 | ||
128 | static void | |
636dff67 | 129 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
130 | { |
131 | gfc_data_variable *q; | |
132 | ||
133 | for (; p; p = q) | |
134 | { | |
135 | q = p->next; | |
136 | gfc_free_expr (p->expr); | |
137 | gfc_free_iterator (&p->iter, 0); | |
138 | free_variable (p->list); | |
cede9502 | 139 | free (p); |
294fbfc8 TS |
140 | } |
141 | } | |
142 | ||
143 | ||
144 | /* Free a gfc_data_value structure and everything beneath it. */ | |
145 | ||
146 | static void | |
636dff67 | 147 | free_value (gfc_data_value *p) |
294fbfc8 TS |
148 | { |
149 | gfc_data_value *q; | |
150 | ||
151 | for (; p; p = q) | |
152 | { | |
153 | q = p->next; | |
c9d75a48 | 154 | mpz_clear (p->repeat); |
294fbfc8 | 155 | gfc_free_expr (p->expr); |
cede9502 | 156 | free (p); |
294fbfc8 TS |
157 | } |
158 | } | |
159 | ||
160 | ||
161 | /* Free a list of gfc_data structures. */ | |
162 | ||
163 | void | |
636dff67 | 164 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
165 | { |
166 | gfc_data *q; | |
167 | ||
168 | for (; p; p = q) | |
169 | { | |
170 | q = p->next; | |
294fbfc8 TS |
171 | free_variable (p->var); |
172 | free_value (p->value); | |
cede9502 | 173 | free (p); |
294fbfc8 TS |
174 | } |
175 | } | |
176 | ||
177 | ||
a9f6f1f2 | 178 | /* Free all data in a namespace. */ |
636dff67 | 179 | |
a9f6f1f2 | 180 | static void |
66e4ab31 | 181 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
182 | { |
183 | gfc_data *d; | |
184 | ||
185 | for (;ns->data;) | |
186 | { | |
187 | d = ns->data->next; | |
cede9502 | 188 | free (ns->data); |
a9f6f1f2 JD |
189 | ns->data = d; |
190 | } | |
191 | } | |
192 | ||
d5e2274d SB |
193 | /* Reject data parsed since the last restore point was marked. */ |
194 | ||
195 | void | |
196 | gfc_reject_data (gfc_namespace *ns) | |
197 | { | |
198 | gfc_data *d; | |
199 | ||
200 | while (ns->data && ns->data != ns->old_data) | |
201 | { | |
202 | d = ns->data->next; | |
203 | free (ns->data); | |
204 | ns->data = d; | |
205 | } | |
206 | } | |
a9f6f1f2 | 207 | |
294fbfc8 TS |
208 | static match var_element (gfc_data_variable *); |
209 | ||
210 | /* Match a list of variables terminated by an iterator and a right | |
211 | parenthesis. */ | |
212 | ||
213 | static match | |
636dff67 | 214 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
215 | { |
216 | gfc_data_variable *tail, var; | |
217 | match m; | |
218 | ||
219 | m = var_element (&var); | |
220 | if (m == MATCH_ERROR) | |
221 | return MATCH_ERROR; | |
222 | if (m == MATCH_NO) | |
223 | goto syntax; | |
224 | ||
225 | tail = gfc_get_data_variable (); | |
226 | *tail = var; | |
227 | ||
228 | parent->list = tail; | |
229 | ||
230 | for (;;) | |
231 | { | |
232 | if (gfc_match_char (',') != MATCH_YES) | |
233 | goto syntax; | |
234 | ||
235 | m = gfc_match_iterator (&parent->iter, 1); | |
236 | if (m == MATCH_YES) | |
237 | break; | |
238 | if (m == MATCH_ERROR) | |
239 | return MATCH_ERROR; | |
240 | ||
241 | m = var_element (&var); | |
242 | if (m == MATCH_ERROR) | |
243 | return MATCH_ERROR; | |
244 | if (m == MATCH_NO) | |
245 | goto syntax; | |
246 | ||
247 | tail->next = gfc_get_data_variable (); | |
248 | tail = tail->next; | |
249 | ||
250 | *tail = var; | |
251 | } | |
252 | ||
253 | if (gfc_match_char (')') != MATCH_YES) | |
254 | goto syntax; | |
255 | return MATCH_YES; | |
256 | ||
257 | syntax: | |
258 | gfc_syntax_error (ST_DATA); | |
259 | return MATCH_ERROR; | |
260 | } | |
261 | ||
262 | ||
263 | /* Match a single element in a data variable list, which can be a | |
264 | variable-iterator list. */ | |
265 | ||
266 | static match | |
7b901ac4 | 267 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
268 | { |
269 | match m; | |
270 | gfc_symbol *sym; | |
271 | ||
7b901ac4 | 272 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
273 | |
274 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 275 | return var_list (new_var); |
294fbfc8 | 276 | |
7b901ac4 | 277 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
278 | if (m != MATCH_YES) |
279 | return m; | |
280 | ||
7b901ac4 | 281 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 282 | |
f37e928c | 283 | /* Symbol should already have an associated type. */ |
524af0d6 | 284 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
285 | return MATCH_ERROR; |
286 | ||
636dff67 SK |
287 | if (!sym->attr.function && gfc_current_ns->parent |
288 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 289 | { |
c4100eae | 290 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 291 | "statement at %C", sym->name); |
294fbfc8 TS |
292 | return MATCH_ERROR; |
293 | } | |
294 | ||
4075a94e | 295 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 296 | && sym->attr.in_common |
524af0d6 | 297 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 298 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 299 | sym->name)) |
4075a94e | 300 | return MATCH_ERROR; |
294fbfc8 | 301 | |
524af0d6 | 302 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
303 | return MATCH_ERROR; |
304 | ||
305 | return MATCH_YES; | |
306 | } | |
307 | ||
308 | ||
309 | /* Match the top-level list of data variables. */ | |
310 | ||
311 | static match | |
636dff67 | 312 | top_var_list (gfc_data *d) |
294fbfc8 | 313 | { |
7b901ac4 | 314 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
315 | match m; |
316 | ||
317 | tail = NULL; | |
318 | ||
319 | for (;;) | |
320 | { | |
321 | m = var_element (&var); | |
322 | if (m == MATCH_NO) | |
323 | goto syntax; | |
324 | if (m == MATCH_ERROR) | |
325 | return MATCH_ERROR; | |
326 | ||
7b901ac4 KG |
327 | new_var = gfc_get_data_variable (); |
328 | *new_var = var; | |
294fbfc8 TS |
329 | |
330 | if (tail == NULL) | |
7b901ac4 | 331 | d->var = new_var; |
294fbfc8 | 332 | else |
7b901ac4 | 333 | tail->next = new_var; |
294fbfc8 | 334 | |
7b901ac4 | 335 | tail = new_var; |
294fbfc8 TS |
336 | |
337 | if (gfc_match_char ('/') == MATCH_YES) | |
338 | break; | |
339 | if (gfc_match_char (',') != MATCH_YES) | |
340 | goto syntax; | |
341 | } | |
342 | ||
343 | return MATCH_YES; | |
344 | ||
345 | syntax: | |
346 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 347 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
348 | return MATCH_ERROR; |
349 | } | |
350 | ||
351 | ||
352 | static match | |
636dff67 | 353 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
354 | { |
355 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 356 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
357 | gfc_expr *expr; |
358 | match m; | |
36d3fb4c | 359 | locus old_loc; |
294fbfc8 TS |
360 | |
361 | m = gfc_match_literal_constant (&expr, 1); | |
362 | if (m == MATCH_YES) | |
363 | { | |
364 | *result = expr; | |
365 | return MATCH_YES; | |
366 | } | |
367 | ||
368 | if (m == MATCH_ERROR) | |
369 | return MATCH_ERROR; | |
370 | ||
371 | m = gfc_match_null (result); | |
372 | if (m != MATCH_NO) | |
373 | return m; | |
374 | ||
36d3fb4c PT |
375 | old_loc = gfc_current_locus; |
376 | ||
377 | /* Should this be a structure component, try to match it | |
378 | before matching a name. */ | |
379 | m = gfc_match_rvalue (result); | |
380 | if (m == MATCH_ERROR) | |
381 | return m; | |
382 | ||
383 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
384 | { | |
524af0d6 | 385 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
386 | m = MATCH_ERROR; |
387 | return m; | |
388 | } | |
46f4f794 TB |
389 | else if (m == MATCH_YES) |
390 | gfc_free_expr (*result); | |
36d3fb4c PT |
391 | |
392 | gfc_current_locus = old_loc; | |
393 | ||
294fbfc8 TS |
394 | m = gfc_match_name (name); |
395 | if (m != MATCH_YES) | |
396 | return m; | |
397 | ||
398 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
399 | return MATCH_ERROR; | |
400 | ||
c3f34952 TB |
401 | if (sym && sym->attr.generic) |
402 | dt_sym = gfc_find_dt_in_generic (sym); | |
403 | ||
294fbfc8 | 404 | if (sym == NULL |
c3f34952 | 405 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 406 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 407 | { |
c4100eae | 408 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 409 | name); |
89f1f37e | 410 | *result = NULL; |
294fbfc8 TS |
411 | return MATCH_ERROR; |
412 | } | |
f6288c24 | 413 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 414 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 415 | |
d46e0870 JD |
416 | /* Check to see if the value is an initialization array expression. */ |
417 | if (sym->value->expr_type == EXPR_ARRAY) | |
418 | { | |
419 | gfc_current_locus = old_loc; | |
420 | ||
421 | m = gfc_match_init_expr (result); | |
422 | if (m == MATCH_ERROR) | |
423 | return m; | |
424 | ||
425 | if (m == MATCH_YES) | |
426 | { | |
524af0d6 | 427 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
428 | m = MATCH_ERROR; |
429 | ||
430 | if ((*result)->expr_type == EXPR_CONSTANT) | |
431 | return m; | |
432 | else | |
433 | { | |
434 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
435 | return MATCH_ERROR; | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
294fbfc8 TS |
440 | *result = gfc_copy_expr (sym->value); |
441 | return MATCH_YES; | |
442 | } | |
443 | ||
444 | ||
445 | /* Match a list of values in a DATA statement. The leading '/' has | |
446 | already been seen at this point. */ | |
447 | ||
448 | static match | |
636dff67 | 449 | top_val_list (gfc_data *data) |
294fbfc8 | 450 | { |
7b901ac4 | 451 | gfc_data_value *new_val, *tail; |
294fbfc8 | 452 | gfc_expr *expr; |
294fbfc8 TS |
453 | match m; |
454 | ||
455 | tail = NULL; | |
456 | ||
457 | for (;;) | |
458 | { | |
459 | m = match_data_constant (&expr); | |
460 | if (m == MATCH_NO) | |
461 | goto syntax; | |
462 | if (m == MATCH_ERROR) | |
463 | return MATCH_ERROR; | |
464 | ||
7b901ac4 KG |
465 | new_val = gfc_get_data_value (); |
466 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
467 | |
468 | if (tail == NULL) | |
7b901ac4 | 469 | data->value = new_val; |
294fbfc8 | 470 | else |
7b901ac4 | 471 | tail->next = new_val; |
294fbfc8 | 472 | |
7b901ac4 | 473 | tail = new_val; |
294fbfc8 TS |
474 | |
475 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
476 | { | |
477 | tail->expr = expr; | |
f2112868 | 478 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
479 | } |
480 | else | |
481 | { | |
46f4f794 | 482 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 483 | gfc_free_expr (expr); |
294fbfc8 TS |
484 | |
485 | m = match_data_constant (&tail->expr); | |
486 | if (m == MATCH_NO) | |
487 | goto syntax; | |
488 | if (m == MATCH_ERROR) | |
489 | return MATCH_ERROR; | |
490 | } | |
491 | ||
492 | if (gfc_match_char ('/') == MATCH_YES) | |
493 | break; | |
494 | if (gfc_match_char (',') == MATCH_NO) | |
495 | goto syntax; | |
496 | } | |
497 | ||
498 | return MATCH_YES; | |
499 | ||
500 | syntax: | |
501 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 502 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
503 | return MATCH_ERROR; |
504 | } | |
505 | ||
506 | ||
507 | /* Matches an old style initialization. */ | |
508 | ||
509 | static match | |
510 | match_old_style_init (const char *name) | |
511 | { | |
512 | match m; | |
513 | gfc_symtree *st; | |
ed0e3607 | 514 | gfc_symbol *sym; |
294fbfc8 TS |
515 | gfc_data *newdata; |
516 | ||
517 | /* Set up data structure to hold initializers. */ | |
518 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
519 | sym = st->n.sym; |
520 | ||
294fbfc8 TS |
521 | newdata = gfc_get_data (); |
522 | newdata->var = gfc_get_data_variable (); | |
523 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 524 | newdata->where = gfc_current_locus; |
294fbfc8 | 525 | |
66e4ab31 | 526 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
527 | m = top_val_list (newdata); |
528 | if (m != MATCH_YES) | |
529 | { | |
cede9502 | 530 | free (newdata); |
294fbfc8 TS |
531 | return m; |
532 | } | |
533 | ||
534 | if (gfc_pure (NULL)) | |
535 | { | |
536 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 537 | free (newdata); |
294fbfc8 TS |
538 | return MATCH_ERROR; |
539 | } | |
ccd7751b | 540 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 541 | |
ed0e3607 | 542 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 543 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 544 | { |
cede9502 | 545 | free (newdata); |
ed0e3607 AL |
546 | return MATCH_ERROR; |
547 | } | |
548 | ||
294fbfc8 TS |
549 | /* Chain in namespace list of DATA initializers. */ |
550 | newdata->next = gfc_current_ns->data; | |
551 | gfc_current_ns->data = newdata; | |
552 | ||
553 | return m; | |
554 | } | |
555 | ||
636dff67 | 556 | |
294fbfc8 | 557 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 558 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 559 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 560 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
561 | |
562 | match | |
563 | gfc_match_data (void) | |
564 | { | |
7b901ac4 | 565 | gfc_data *new_data; |
294fbfc8 TS |
566 | match m; |
567 | ||
5f0ba745 SK |
568 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
569 | if ((gfc_current_state () == COMP_FUNCTION | |
570 | || gfc_current_state () == COMP_SUBROUTINE) | |
571 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
572 | { | |
573 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
574 | return MATCH_ERROR; | |
575 | } | |
576 | ||
ca39e6f2 | 577 | set_in_match_data (true); |
2220652d | 578 | |
294fbfc8 TS |
579 | for (;;) |
580 | { | |
7b901ac4 KG |
581 | new_data = gfc_get_data (); |
582 | new_data->where = gfc_current_locus; | |
294fbfc8 | 583 | |
7b901ac4 | 584 | m = top_var_list (new_data); |
294fbfc8 TS |
585 | if (m != MATCH_YES) |
586 | goto cleanup; | |
587 | ||
c034c38f SK |
588 | if (new_data->var->iter.var |
589 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
590 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
591 | && new_data->var->list | |
592 | && new_data->var->list->expr | |
593 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
594 | && new_data->var->list->expr->ref | |
595 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
596 | { | |
597 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
598 | "statement", &new_data->var->list->expr->where); | |
599 | goto cleanup; | |
600 | } | |
601 | ||
7b901ac4 | 602 | m = top_val_list (new_data); |
294fbfc8 TS |
603 | if (m != MATCH_YES) |
604 | goto cleanup; | |
605 | ||
7b901ac4 KG |
606 | new_data->next = gfc_current_ns->data; |
607 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
608 | |
609 | if (gfc_match_eos () == MATCH_YES) | |
610 | break; | |
611 | ||
612 | gfc_match_char (','); /* Optional comma */ | |
613 | } | |
614 | ||
ca39e6f2 | 615 | set_in_match_data (false); |
2220652d | 616 | |
294fbfc8 TS |
617 | if (gfc_pure (NULL)) |
618 | { | |
619 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
620 | return MATCH_ERROR; | |
621 | } | |
ccd7751b | 622 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 623 | |
294fbfc8 TS |
624 | return MATCH_YES; |
625 | ||
626 | cleanup: | |
ca39e6f2 | 627 | set_in_match_data (false); |
7b901ac4 | 628 | gfc_free_data (new_data); |
294fbfc8 TS |
629 | return MATCH_ERROR; |
630 | } | |
631 | ||
632 | ||
633 | /************************ Declaration statements *********************/ | |
634 | ||
d3a9eea2 | 635 | |
f6288c24 FR |
636 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
637 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 638 | and is surrounded by '/'. |
f6288c24 FR |
639 | The typespec ts must match the typespec of the variable which the |
640 | clist is initializing. | |
6442a6f4 | 641 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
642 | corresponding to array elements or a scalar (as == NULL). */ |
643 | ||
644 | static match | |
645 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
646 | { | |
647 | gfc_constructor_base array_head = NULL; | |
648 | gfc_expr *expr = NULL; | |
649 | match m; | |
650 | locus where; | |
9b24c104 | 651 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
652 | bool scalar; |
653 | int cmp; | |
654 | ||
655 | gcc_assert (ts); | |
656 | ||
657 | mpz_init_set_ui (repeat, 0); | |
f6288c24 FR |
658 | scalar = !as || !as->rank; |
659 | ||
660 | /* We have already matched '/' - now look for a constant list, as with | |
661 | top_val_list from decl.c, but append the result to an array. */ | |
662 | if (gfc_match ("/") == MATCH_YES) | |
663 | { | |
664 | gfc_error ("Empty old style initializer list at %C"); | |
665 | goto cleanup; | |
666 | } | |
667 | ||
668 | where = gfc_current_locus; | |
669 | for (;;) | |
670 | { | |
671 | m = match_data_constant (&expr); | |
672 | if (m != MATCH_YES) | |
673 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
674 | if (m == MATCH_NO) | |
675 | goto syntax; | |
676 | if (m == MATCH_ERROR) | |
677 | goto cleanup; | |
678 | ||
679 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
680 | if ( gfc_match_char ('*') == MATCH_YES) | |
681 | { | |
682 | if (scalar) | |
683 | { | |
684 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
685 | goto cleanup; | |
686 | } | |
687 | if (expr->ts.type != BT_INTEGER) | |
688 | { | |
689 | gfc_error ("Repeat spec must be an integer at %C"); | |
690 | goto cleanup; | |
691 | } | |
692 | mpz_set (repeat, expr->value.integer); | |
693 | gfc_free_expr (expr); | |
694 | expr = NULL; | |
695 | ||
696 | m = match_data_constant (&expr); | |
697 | if (m == MATCH_NO) | |
698 | gfc_error ("Expected data constant after repeat spec at %C"); | |
699 | if (m != MATCH_YES) | |
700 | goto cleanup; | |
701 | } | |
702 | /* No repeat spec, we matched the data constant itself. */ | |
703 | else | |
704 | mpz_set_ui (repeat, 1); | |
705 | ||
706 | if (!scalar) | |
707 | { | |
708 | /* Add the constant initializer as many times as repeated. */ | |
709 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
710 | { | |
711 | /* Make sure types of elements match */ | |
712 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
713 | && !gfc_convert_type (expr, ts, 1)) | |
714 | goto cleanup; | |
715 | ||
716 | gfc_constructor_append_expr (&array_head, | |
717 | gfc_copy_expr (expr), &gfc_current_locus); | |
718 | } | |
719 | ||
720 | gfc_free_expr (expr); | |
721 | expr = NULL; | |
722 | } | |
723 | ||
724 | /* For scalar initializers quit after one element. */ | |
725 | else | |
726 | { | |
727 | if(gfc_match_char ('/') != MATCH_YES) | |
728 | { | |
729 | gfc_error ("End of scalar initializer expected at %C"); | |
730 | goto cleanup; | |
731 | } | |
732 | break; | |
733 | } | |
734 | ||
735 | if (gfc_match_char ('/') == MATCH_YES) | |
736 | break; | |
737 | if (gfc_match_char (',') == MATCH_NO) | |
738 | goto syntax; | |
739 | } | |
740 | ||
741 | /* Set up expr as an array constructor. */ | |
742 | if (!scalar) | |
743 | { | |
744 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
745 | expr->ts = *ts; | |
746 | expr->value.constructor = array_head; | |
747 | ||
748 | expr->rank = as->rank; | |
749 | expr->shape = gfc_get_shape (expr->rank); | |
750 | ||
9b24c104 FR |
751 | /* Validate sizes. We built expr ourselves, so cons_size will be |
752 | constant (we fail above for non-constant expressions). | |
753 | We still need to verify that the array-spec has constant size. */ | |
754 | cmp = 0; | |
755 | gcc_assert (gfc_array_size (expr, &cons_size)); | |
756 | if (!spec_size (as, &as_size)) | |
757 | { | |
758 | gfc_error ("Expected constant array-spec in initializer list at %L", | |
759 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
760 | cmp = -1; | |
761 | } | |
762 | else | |
763 | { | |
764 | /* Make sure the specs are of the same size. */ | |
765 | cmp = mpz_cmp (cons_size, as_size); | |
766 | if (cmp < 0) | |
767 | gfc_error ("Not enough elements in array initializer at %C"); | |
768 | else if (cmp > 0) | |
769 | gfc_error ("Too many elements in array initializer at %C"); | |
770 | mpz_clear (as_size); | |
771 | } | |
772 | mpz_clear (cons_size); | |
f6288c24 | 773 | if (cmp) |
9b24c104 | 774 | goto cleanup; |
f6288c24 FR |
775 | } |
776 | ||
777 | /* Make sure scalar types match. */ | |
778 | else if (!gfc_compare_types (&expr->ts, ts) | |
779 | && !gfc_convert_type (expr, ts, 1)) | |
780 | goto cleanup; | |
781 | ||
782 | if (expr->ts.u.cl) | |
783 | expr->ts.u.cl->length_from_typespec = 1; | |
784 | ||
785 | *result = expr; | |
f6288c24 FR |
786 | mpz_clear (repeat); |
787 | return MATCH_YES; | |
788 | ||
789 | syntax: | |
790 | gfc_error ("Syntax error in old style initializer list at %C"); | |
791 | ||
792 | cleanup: | |
793 | if (expr) | |
794 | expr->value.constructor = NULL; | |
795 | gfc_free_expr (expr); | |
796 | gfc_constructor_free (array_head); | |
f6288c24 FR |
797 | mpz_clear (repeat); |
798 | return MATCH_ERROR; | |
799 | } | |
800 | ||
801 | ||
eea58adb | 802 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 803 | |
524af0d6 | 804 | static bool |
d3a9eea2 TB |
805 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
806 | { | |
807 | int i; | |
808 | ||
63fbf586 TB |
809 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
810 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
811 | { | |
812 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 813 | return false; |
63fbf586 | 814 | } |
c62c6622 | 815 | |
d3a9eea2 TB |
816 | if (to->rank == 0 && from->rank > 0) |
817 | { | |
818 | to->rank = from->rank; | |
819 | to->type = from->type; | |
820 | to->cray_pointee = from->cray_pointee; | |
821 | to->cp_was_assumed = from->cp_was_assumed; | |
822 | ||
823 | for (i = 0; i < to->corank; i++) | |
824 | { | |
825 | to->lower[from->rank + i] = to->lower[i]; | |
826 | to->upper[from->rank + i] = to->upper[i]; | |
827 | } | |
828 | for (i = 0; i < from->rank; i++) | |
829 | { | |
830 | if (copy) | |
831 | { | |
832 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
833 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
834 | } | |
835 | else | |
836 | { | |
837 | to->lower[i] = from->lower[i]; | |
838 | to->upper[i] = from->upper[i]; | |
839 | } | |
840 | } | |
841 | } | |
842 | else if (to->corank == 0 && from->corank > 0) | |
843 | { | |
844 | to->corank = from->corank; | |
845 | to->cotype = from->cotype; | |
846 | ||
847 | for (i = 0; i < from->corank; i++) | |
848 | { | |
849 | if (copy) | |
850 | { | |
851 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
852 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
853 | } | |
854 | else | |
855 | { | |
856 | to->lower[to->rank + i] = from->lower[i]; | |
857 | to->upper[to->rank + i] = from->upper[i]; | |
858 | } | |
859 | } | |
860 | } | |
63fbf586 | 861 | |
524af0d6 | 862 | return true; |
d3a9eea2 TB |
863 | } |
864 | ||
865 | ||
6de9cd9a DN |
866 | /* Match an intent specification. Since this can only happen after an |
867 | INTENT word, a legal intent-spec must follow. */ | |
868 | ||
869 | static sym_intent | |
870 | match_intent_spec (void) | |
871 | { | |
872 | ||
873 | if (gfc_match (" ( in out )") == MATCH_YES) | |
874 | return INTENT_INOUT; | |
875 | if (gfc_match (" ( in )") == MATCH_YES) | |
876 | return INTENT_IN; | |
877 | if (gfc_match (" ( out )") == MATCH_YES) | |
878 | return INTENT_OUT; | |
879 | ||
880 | gfc_error ("Bad INTENT specification at %C"); | |
881 | return INTENT_UNKNOWN; | |
882 | } | |
883 | ||
884 | ||
885 | /* Matches a character length specification, which is either a | |
e69afb29 | 886 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
887 | |
888 | static match | |
e69afb29 | 889 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 890 | { |
cba28dad JD |
891 | match m; |
892 | ||
e69afb29 SK |
893 | *expr = NULL; |
894 | *deferred = false; | |
895 | ||
6de9cd9a | 896 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
897 | return MATCH_YES; |
898 | ||
899 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 900 | { |
98a819ea | 901 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
902 | return MATCH_ERROR; |
903 | ||
904 | *deferred = true; | |
905 | ||
6de9cd9a DN |
906 | return MATCH_YES; |
907 | } | |
908 | ||
cba28dad | 909 | m = gfc_match_expr (expr); |
f37e928c | 910 | |
98a819ea SK |
911 | if (m == MATCH_NO || m == MATCH_ERROR) |
912 | return m; | |
913 | ||
914 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
915 | return MATCH_ERROR; |
916 | ||
98a819ea | 917 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 918 | { |
8d48826b SK |
919 | if ((*expr)->ts.type == BT_INTEGER |
920 | || ((*expr)->ts.type == BT_UNKNOWN | |
921 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
922 | return MATCH_YES; | |
923 | ||
924 | goto syntax; | |
925 | } | |
926 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
927 | { | |
928 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
929 | processor dependent and its value is greater than or equal to zero. | |
930 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
931 | to a negative value, the length of character entities declared | |
932 | is zero. */ | |
933 | ||
934 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 935 | { |
8d48826b SK |
936 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
937 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 938 | } |
8d48826b SK |
939 | else |
940 | goto syntax; | |
cba28dad | 941 | } |
8d48826b SK |
942 | else if ((*expr)->expr_type == EXPR_ARRAY) |
943 | goto syntax; | |
944 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
945 | { | |
fb42421e | 946 | bool t; |
8d48826b SK |
947 | gfc_expr *e; |
948 | ||
949 | e = gfc_copy_expr (*expr); | |
950 | ||
951 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
952 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
953 | if (e->ref && e->ref->type == REF_ARRAY |
954 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
955 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
956 | goto syntax; | |
957 | ||
fb42421e SK |
958 | t = gfc_reduce_init_expr (e); |
959 | ||
8d987deb SK |
960 | if (!t && e->ts.type == BT_UNKNOWN |
961 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
962 | && (flag_implicit_none |
963 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 964 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
965 | { |
966 | gfc_free_expr (e); | |
967 | goto syntax; | |
968 | } | |
98a819ea | 969 | |
54b96a2d | 970 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 971 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
972 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
973 | { | |
974 | gfc_free_expr (e); | |
975 | goto syntax; | |
976 | } | |
977 | ||
978 | gfc_free_expr (e); | |
979 | } | |
98a819ea | 980 | |
cba28dad JD |
981 | return m; |
982 | ||
983 | syntax: | |
8d48826b | 984 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 985 | return MATCH_ERROR; |
6de9cd9a DN |
986 | } |
987 | ||
988 | ||
989 | /* A character length is a '*' followed by a literal integer or a | |
990 | char_len_param_value in parenthesis. */ | |
991 | ||
992 | static match | |
62732c30 | 993 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 994 | { |
5cf54585 | 995 | int length; |
6de9cd9a DN |
996 | match m; |
997 | ||
f5acf0f2 | 998 | *deferred = false; |
6de9cd9a DN |
999 | m = gfc_match_char ('*'); |
1000 | if (m != MATCH_YES) | |
1001 | return m; | |
1002 | ||
5cf54585 | 1003 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1004 | if (m == MATCH_ERROR) |
1005 | return m; | |
1006 | ||
1007 | if (m == MATCH_YES) | |
1008 | { | |
62732c30 | 1009 | if (obsolescent_check |
524af0d6 | 1010 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1011 | return MATCH_ERROR; |
f622221a | 1012 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1013 | return m; |
1014 | } | |
1015 | ||
1016 | if (gfc_match_char ('(') == MATCH_NO) | |
1017 | goto syntax; | |
1018 | ||
e69afb29 | 1019 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1020 | if (m != MATCH_YES && gfc_matching_function) |
1021 | { | |
1022 | gfc_undo_symbols (); | |
1023 | m = MATCH_YES; | |
1024 | } | |
1025 | ||
6de9cd9a DN |
1026 | if (m == MATCH_ERROR) |
1027 | return m; | |
1028 | if (m == MATCH_NO) | |
1029 | goto syntax; | |
1030 | ||
1031 | if (gfc_match_char (')') == MATCH_NO) | |
1032 | { | |
1033 | gfc_free_expr (*expr); | |
1034 | *expr = NULL; | |
1035 | goto syntax; | |
1036 | } | |
1037 | ||
1038 | return MATCH_YES; | |
1039 | ||
1040 | syntax: | |
1041 | gfc_error ("Syntax error in character length specification at %C"); | |
1042 | return MATCH_ERROR; | |
1043 | } | |
1044 | ||
1045 | ||
9e35b386 EE |
1046 | /* Special subroutine for finding a symbol. Check if the name is found |
1047 | in the current name space. If not, and we're compiling a function or | |
1048 | subroutine and the parent compilation unit is an interface, then check | |
1049 | to see if the name we've been given is the name of the interface | |
1050 | (located in another namespace). */ | |
6de9cd9a DN |
1051 | |
1052 | static int | |
08a6b8e0 | 1053 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1054 | { |
1055 | gfc_state_data *s; | |
08a6b8e0 | 1056 | gfc_symtree *st; |
9e35b386 | 1057 | int i; |
6de9cd9a | 1058 | |
08a6b8e0 | 1059 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1060 | if (i == 0) |
08a6b8e0 TB |
1061 | { |
1062 | *result = st ? st->n.sym : NULL; | |
1063 | goto end; | |
1064 | } | |
d51347f9 | 1065 | |
6de9cd9a DN |
1066 | if (gfc_current_state () != COMP_SUBROUTINE |
1067 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1068 | goto end; |
6de9cd9a DN |
1069 | |
1070 | s = gfc_state_stack->previous; | |
1071 | if (s == NULL) | |
9e35b386 | 1072 | goto end; |
6de9cd9a DN |
1073 | |
1074 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1075 | goto end; |
6de9cd9a | 1076 | if (s->sym == NULL) |
66e4ab31 | 1077 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1078 | |
1079 | if (strcmp (name, s->sym->name) == 0) | |
1080 | { | |
1081 | *result = s->sym; | |
1082 | return 0; | |
1083 | } | |
1084 | ||
9e35b386 EE |
1085 | end: |
1086 | return i; | |
6de9cd9a DN |
1087 | } |
1088 | ||
1089 | ||
1090 | /* Special subroutine for getting a symbol node associated with a | |
1091 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1092 | symbol is created in the parent using with symtree node in the | |
1093 | child unit pointing to the symbol. If the current namespace has no | |
1094 | parent, then the symbol is just created in the current unit. */ | |
1095 | ||
1096 | static int | |
636dff67 | 1097 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1098 | { |
1099 | gfc_symtree *st; | |
1100 | gfc_symbol *sym; | |
a7ca4d8d | 1101 | int rc = 0; |
6de9cd9a | 1102 | |
1a492601 PT |
1103 | /* Module functions have to be left in their own namespace because |
1104 | they have potentially (almost certainly!) already been referenced. | |
1105 | In this sense, they are rather like external functions. This is | |
1106 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1107 | space is set to point to the master function, so that the fake | |
1108 | result mechanism can work. */ | |
1109 | if (module_fcn_entry) | |
6c12686b PT |
1110 | { |
1111 | /* Present if entry is declared to be a module procedure. */ | |
1112 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1113 | |
6c12686b PT |
1114 | if (*result == NULL) |
1115 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1116 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1117 | && (*result)->ts.type == BT_UNKNOWN |
1118 | && sym->attr.flavor == FL_UNKNOWN) | |
1119 | /* Pick up the typespec for the entry, if declared in the function | |
1120 | body. Note that this symbol is FL_UNKNOWN because it will | |
1121 | only have appeared in a type declaration. The local symtree | |
1122 | is set to point to the module symbol and a unique symtree | |
1123 | to the local version. This latter ensures a correct clearing | |
1124 | of the symbols. */ | |
2e32a71e PT |
1125 | { |
1126 | /* If the ENTRY proceeds its specification, we need to ensure | |
1127 | that this does not raise a "has no IMPLICIT type" error. */ | |
1128 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1129 | sym->attr.untyped = 1; |
2e32a71e | 1130 | |
0e5a218b | 1131 | (*result)->ts = sym->ts; |
2e32a71e PT |
1132 | |
1133 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1134 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1135 | can be applied. */ |
1136 | (*result)->ns = gfc_current_ns; | |
1137 | ||
1138 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1139 | st->n.sym = *result; | |
1140 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1141 | sym->refs++; |
2e32a71e PT |
1142 | st->n.sym = sym; |
1143 | } | |
6c12686b | 1144 | } |
68ea355b PT |
1145 | else |
1146 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1147 | |
a7ca4d8d PT |
1148 | if (rc) |
1149 | return rc; | |
1150 | ||
68ea355b | 1151 | sym = *result; |
79124116 PT |
1152 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1153 | return rc; | |
6de9cd9a | 1154 | |
4668d6f9 PT |
1155 | if (sym->attr.module_procedure |
1156 | && sym->attr.if_source == IFSRC_IFBODY) | |
1157 | { | |
1158 | /* Create a partially populated interface symbol to carry the | |
1159 | characteristics of the procedure and the result. */ | |
c064374d PT |
1160 | sym->tlink = gfc_new_symbol (name, sym->ns); |
1161 | gfc_add_type (sym->tlink, &(sym->ts), | |
4668d6f9 | 1162 | &gfc_current_locus); |
c064374d | 1163 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1164 | if (sym->attr.dimension) |
c064374d | 1165 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1166 | |
1167 | /* Ideally, at this point, a copy would be made of the formal | |
1168 | arguments and their namespace. However, this does not appear | |
1169 | to be necessary, albeit at the expense of not being able to | |
1170 | use gfc_compare_interfaces directly. */ | |
1171 | ||
1172 | if (sym->result && sym->result != sym) | |
1173 | { | |
c064374d | 1174 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1175 | sym->result = NULL; |
1176 | } | |
1177 | else if (sym->result) | |
1178 | { | |
c064374d | 1179 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1180 | } |
1181 | } | |
1182 | else if (sym && !sym->gfc_new | |
1183 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1184 | { |
cda7004b PT |
1185 | /* Trap another encompassed procedure with the same name. All |
1186 | these conditions are necessary to avoid picking up an entry | |
1187 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1188 | this is handled using gsymbols to register unique, globally |
cda7004b | 1189 | accessible names. */ |
68ea355b | 1190 | if (sym->attr.flavor != 0 |
636dff67 SK |
1191 | && sym->attr.proc != 0 |
1192 | && (sym->attr.subroutine || sym->attr.function) | |
1193 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
1194 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1195 | name, &sym->declared_at); | |
68ea355b | 1196 | |
fd3e70af JD |
1197 | /* Trap a procedure with a name the same as interface in the |
1198 | encompassing scope. */ | |
1199 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1200 | && (sym->attr.subroutine || sym->attr.function) |
1201 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
1202 | gfc_error_now ("Name %qs at %C is already defined" |
1203 | " as a generic interface at %L", | |
1204 | name, &sym->declared_at); | |
fd3e70af | 1205 | |
68ea355b PT |
1206 | /* Trap declarations of attributes in encompassing scope. The |
1207 | signature for this is that ts.kind is set. Legitimate | |
1208 | references only set ts.type. */ | |
1209 | if (sym->ts.kind != 0 | |
636dff67 SK |
1210 | && !sym->attr.implicit_type |
1211 | && sym->attr.proc == 0 | |
1212 | && gfc_current_ns->parent != NULL | |
1213 | && sym->attr.access == 0 | |
1214 | && !module_fcn_entry) | |
fea70c99 MLI |
1215 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1216 | "and must not have attributes declared at %L", | |
1217 | name, &sym->declared_at); | |
68ea355b PT |
1218 | } |
1219 | ||
1220 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1221 | return rc; | |
6de9cd9a | 1222 | |
1a492601 PT |
1223 | /* Module function entries will already have a symtree in |
1224 | the current namespace but will need one at module level. */ | |
1225 | if (module_fcn_entry) | |
6c12686b PT |
1226 | { |
1227 | /* Present if entry is declared to be a module procedure. */ | |
1228 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1229 | if (st == NULL) | |
1230 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1231 | } | |
1a492601 PT |
1232 | else |
1233 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1234 | |
6de9cd9a DN |
1235 | st->n.sym = sym; |
1236 | sym->refs++; | |
1237 | ||
66e4ab31 | 1238 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1239 | |
1a492601 | 1240 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1241 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1242 | && sym->attr.proc != PROC_MODULE) | |
1243 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1244 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1245 | rc = 2; |
1246 | ||
1247 | return rc; | |
1248 | } | |
1249 | ||
1250 | ||
a8b3b0b6 CR |
1251 | /* Verify that the given symbol representing a parameter is C |
1252 | interoperable, by checking to see if it was marked as such after | |
1253 | its declaration. If the given symbol is not interoperable, a | |
1254 | warning is reported, thus removing the need to return the status to | |
1255 | the calling function. The standard does not require the user use | |
1256 | one of the iso_c_binding named constants to declare an | |
1257 | interoperable parameter, but we can't be sure if the param is C | |
1258 | interop or not if the user doesn't. For example, integer(4) may be | |
1259 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1260 | a number of the C types, which causes a problem because the | |
1261 | compiler can't know which one. This code is almost certainly not | |
1262 | portable, and the user will get what they deserve if the C type | |
1263 | across platforms isn't always interoperable with integer(4). If | |
1264 | the user had used something like integer(c_int) or integer(c_long), | |
1265 | the compiler could have automatically handled the varying sizes | |
1266 | across platforms. */ | |
1267 | ||
524af0d6 | 1268 | bool |
00820a2a | 1269 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1270 | { |
1271 | int is_c_interop = 0; | |
524af0d6 | 1272 | bool retval = true; |
a8b3b0b6 CR |
1273 | |
1274 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1275 | Don't repeat the checks here. */ | |
1276 | if (sym->attr.implicit_type) | |
524af0d6 | 1277 | return true; |
f5acf0f2 | 1278 | |
a8b3b0b6 CR |
1279 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1280 | they're interoperable if they're BIND(C) and their params are all | |
1281 | interoperable. */ | |
1282 | if (sym->attr.flavor == FL_PROCEDURE) | |
1283 | { | |
1284 | if (sym->attr.is_bind_c == 0) | |
1285 | { | |
4daa149b TB |
1286 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1287 | "attribute to be C interoperable", sym->name, | |
1288 | &(sym->declared_at)); | |
524af0d6 | 1289 | return false; |
a8b3b0b6 CR |
1290 | } |
1291 | else | |
1292 | { | |
1293 | if (sym->attr.is_c_interop == 1) | |
1294 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1295 | return true; |
a8b3b0b6 CR |
1296 | else |
1297 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1298 | sym->common_block); | |
1299 | } | |
1300 | } | |
f5acf0f2 | 1301 | |
a8b3b0b6 CR |
1302 | /* See if we've stored a reference to a procedure that owns sym. */ |
1303 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1304 | { | |
1305 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1306 | { | |
524af0d6 | 1307 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1308 | |
1309 | if (is_c_interop != 1) | |
1310 | { | |
1311 | /* Make personalized messages to give better feedback. */ | |
1312 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1313 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1314 | "BIND(C) procedure %qs but is not C interoperable " | |
1315 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1316 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1317 | sym->ns->proc_name->name, |
bc21d315 | 1318 | sym->ts.u.derived->name); |
00820a2a | 1319 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1320 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1321 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1322 | "because it is polymorphic", |
1323 | sym->name, &(sym->declared_at), | |
1324 | sym->ns->proc_name->name); | |
4daa149b | 1325 | else if (warn_c_binding_type) |
48749dbc MLI |
1326 | gfc_warning (OPT_Wc_binding_type, |
1327 | "Variable %qs at %L is a dummy argument of the " | |
1328 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1329 | "interoperable", |
1330 | sym->name, &(sym->declared_at), | |
1331 | sym->ns->proc_name->name); | |
1332 | } | |
aa5e22f0 CR |
1333 | |
1334 | /* Character strings are only C interoperable if they have a | |
1335 | length of 1. */ | |
1336 | if (sym->ts.type == BT_CHARACTER) | |
1337 | { | |
bc21d315 | 1338 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1339 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1340 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1341 | { | |
c4100eae | 1342 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1343 | "must be length 1 because " |
c4100eae | 1344 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1345 | sym->name, &sym->declared_at, |
1346 | sym->ns->proc_name->name); | |
524af0d6 | 1347 | retval = false; |
aa5e22f0 CR |
1348 | } |
1349 | } | |
1350 | ||
a8b3b0b6 CR |
1351 | /* We have to make sure that any param to a bind(c) routine does |
1352 | not have the allocatable, pointer, or optional attributes, | |
1353 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1354 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1355 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1356 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1357 | "with BIND(C)", sym->name, |
1358 | &(sym->declared_at), | |
1359 | sym->ns->proc_name->name)) | |
1360 | retval = false; | |
1361 | ||
1362 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1363 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1364 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1365 | "with BIND(C)", sym->name, |
1366 | &(sym->declared_at), | |
1367 | sym->ns->proc_name->name)) | |
1368 | retval = false; | |
1369 | ||
1370 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1371 | { |
c4100eae MLI |
1372 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1373 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1374 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1375 | sym->ns->proc_name->name); |
524af0d6 | 1376 | retval = false; |
a8b3b0b6 CR |
1377 | } |
1378 | ||
2e8d9212 | 1379 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1380 | { |
c4100eae MLI |
1381 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1382 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1383 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1384 | sym->ns->proc_name->name); |
524af0d6 | 1385 | retval = false; |
a8b3b0b6 | 1386 | } |
2e8d9212 | 1387 | else if (sym->attr.optional == 1 |
a4d9b221 | 1388 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1389 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1390 | "procedure %qs which is BIND(C)", |
1391 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1392 | sym->ns->proc_name->name)) |
1393 | retval = false; | |
a8b3b0b6 CR |
1394 | |
1395 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1396 | either assumed size or explicit shape. Deferred shape is already |
1397 | covered by the pointer/allocatable attribute. */ | |
1398 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1399 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 | 1400 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1401 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1402 | &(sym->declared_at), |
1403 | sym->ns->proc_name->name, | |
524af0d6 JB |
1404 | &(sym->ns->proc_name->declared_at))) |
1405 | retval = false; | |
a8b3b0b6 CR |
1406 | } |
1407 | } | |
1408 | ||
1409 | return retval; | |
1410 | } | |
1411 | ||
1412 | ||
cf2b3c22 | 1413 | |
a8b3b0b6 | 1414 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1415 | |
524af0d6 | 1416 | static bool |
e69afb29 | 1417 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1418 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1419 | { |
1420 | symbol_attribute attr; | |
1421 | gfc_symbol *sym; | |
1e6025b6 | 1422 | int upper; |
bedee914 PT |
1423 | gfc_symtree *st; |
1424 | ||
1425 | /* Symbols in a submodule are host associated from the parent module or | |
1426 | submodules. Therefore, they can be overridden by declarations in the | |
1427 | submodule scope. Deal with this by attaching the existing symbol to | |
1428 | a new symtree and recycling the old symtree with a new symbol... */ | |
1429 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1430 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1431 | && st->n.sym != NULL | |
1432 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1433 | { | |
1434 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1435 | s->n.sym = st->n.sym; | |
1436 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1437 | |
bedee914 PT |
1438 | |
1439 | st->n.sym = sym; | |
1440 | sym->refs++; | |
1441 | gfc_set_sym_referenced (sym); | |
1442 | } | |
1443 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1444 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1445 | return false; |
6de9cd9a | 1446 | |
1e6025b6 TK |
1447 | /* Check if the name has already been defined as a type. The |
1448 | first letter of the symtree will be in upper case then. Of | |
1449 | course, this is only necessary if the upper case letter is | |
1450 | actually different. */ | |
1451 | ||
1452 | upper = TOUPPER(name[0]); | |
1453 | if (upper != name[0]) | |
1454 | { | |
1455 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1456 | gfc_symtree *st; | |
1e6025b6 | 1457 | |
025d57f0 MS |
1458 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1459 | strcpy (u_name, name); | |
1e6025b6 TK |
1460 | u_name[0] = upper; |
1461 | ||
1462 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1463 | ||
f6288c24 FR |
1464 | /* STRUCTURE types can alias symbol names */ |
1465 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1466 | { |
1467 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1468 | &st->n.sym->declared_at); | |
1469 | return false; | |
1470 | } | |
1471 | } | |
1472 | ||
66e4ab31 | 1473 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1474 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1475 | && (sym->attr.implicit_type == 0 |
1476 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1477 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1478 | return false; | |
6de9cd9a DN |
1479 | |
1480 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1481 | { |
1482 | sym->ts.u.cl = cl; | |
1483 | sym->ts.deferred = cl_deferred; | |
1484 | } | |
6de9cd9a DN |
1485 | |
1486 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1487 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1488 | return false; | |
6de9cd9a DN |
1489 | *as = NULL; |
1490 | ||
1491 | /* Add attribute to symbol. The copy is so that we can reset the | |
1492 | dimension attribute. */ | |
1493 | attr = current_attr; | |
1494 | attr.dimension = 0; | |
be59db2d | 1495 | attr.codimension = 0; |
6de9cd9a | 1496 | |
524af0d6 JB |
1497 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1498 | return false; | |
6de9cd9a | 1499 | |
a8b3b0b6 CR |
1500 | /* Finish any work that may need to be done for the binding label, |
1501 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1502 | is made, and before the symbol name (for data decls), so the | |
1503 | current_ts is holding the binding label, or nothing if the | |
1504 | name= attr wasn't given. Therefore, test here if we're dealing | |
1505 | with a bind(c) and make sure the binding label is set correctly. */ | |
1506 | if (sym->attr.is_bind_c == 1) | |
1507 | { | |
62603fae | 1508 | if (!sym->binding_label) |
a8b3b0b6 | 1509 | { |
ad4a2f64 TB |
1510 | /* Set the binding label and verify that if a NAME= was specified |
1511 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1512 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1513 | num_idents_on_line)) |
1514 | return false; | |
a8b3b0b6 CR |
1515 | } |
1516 | } | |
1517 | ||
1518 | /* See if we know we're in a common block, and if it's a bind(c) | |
1519 | common then we need to make sure we're an interoperable type. */ | |
1520 | if (sym->attr.in_common == 1) | |
1521 | { | |
1522 | /* Test the common block object. */ | |
1523 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1524 | && sym->ts.is_c_interop != 1) | |
1525 | { | |
4daa149b | 1526 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1527 | "must be declared with a C interoperable " |
4daa149b | 1528 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1529 | sym->name, sym->common_block->name, |
1530 | sym->common_block->name); | |
1531 | gfc_clear_error (); | |
1532 | } | |
1533 | } | |
1534 | ||
9a3db5a3 PT |
1535 | sym->attr.implied_index = 0; |
1536 | ||
5bab4c96 PT |
1537 | /* Use the parameter expressions for a parameterized derived type. */ |
1538 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1539 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1540 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1541 | ||
528622fd | 1542 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1543 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1544 | |
524af0d6 | 1545 | return true; |
6de9cd9a DN |
1546 | } |
1547 | ||
636dff67 | 1548 | |
df7cc9b5 | 1549 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1550 | truncated. If we're inside an array constructor without a typespec, we |
1551 | additionally check that all elements have the same length; check_len -1 | |
1552 | means no checking. */ | |
df7cc9b5 FW |
1553 | |
1554 | void | |
6b271a2e JB |
1555 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1556 | gfc_charlen_t check_len) | |
df7cc9b5 | 1557 | { |
00660189 | 1558 | gfc_char_t *s; |
6b271a2e | 1559 | gfc_charlen_t slen; |
df7cc9b5 | 1560 | |
834e9dbb SK |
1561 | if (expr->ts.type != BT_CHARACTER) |
1562 | return; | |
63af1586 | 1563 | |
b441ae1d SK |
1564 | if (expr->expr_type != EXPR_CONSTANT) |
1565 | { | |
1566 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1567 | return; | |
1568 | } | |
df7cc9b5 FW |
1569 | |
1570 | slen = expr->value.character.length; | |
1571 | if (len != slen) | |
1572 | { | |
00660189 FXC |
1573 | s = gfc_get_wide_string (len + 1); |
1574 | memcpy (s, expr->value.character.string, | |
1575 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1576 | if (len > slen) |
00660189 | 1577 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1578 | |
a96c39ea | 1579 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1580 | gfc_warning_now (OPT_Wcharacter_truncation, |
1581 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1582 | "(%ld/%ld)", &expr->where, |
1583 | (long) slen, (long) len); | |
2220652d PT |
1584 | |
1585 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1586 | initializers. */ | |
d2848082 DK |
1587 | if (check_len != -1 && slen != check_len |
1588 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1589 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1590 | "at %L must have the same length (%ld/%ld)", |
1591 | &expr->where, (long) slen, | |
1592 | (long) check_len); | |
2220652d | 1593 | |
150675a8 | 1594 | s[len] = '\0'; |
cede9502 | 1595 | free (expr->value.character.string); |
df7cc9b5 FW |
1596 | expr->value.character.string = s; |
1597 | expr->value.character.length = len; | |
1598 | } | |
1599 | } | |
6de9cd9a | 1600 | |
25d8f0a2 | 1601 | |
d51347f9 | 1602 | /* Function to create and update the enumerator history |
25d8f0a2 | 1603 | using the information passed as arguments. |
d51347f9 TB |
1604 | Pointer "max_enum" is also updated, to point to |
1605 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1606 | |
1607 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1608 | INIT points to its enumerator value. */ |
25d8f0a2 | 1609 | |
d51347f9 | 1610 | static void |
636dff67 | 1611 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1612 | { |
1613 | enumerator_history *new_enum_history; | |
1614 | gcc_assert (sym != NULL && init != NULL); | |
1615 | ||
ece3f663 | 1616 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1617 | |
1618 | new_enum_history->sym = sym; | |
1619 | new_enum_history->initializer = init; | |
1620 | new_enum_history->next = NULL; | |
1621 | ||
1622 | if (enum_history == NULL) | |
1623 | { | |
1624 | enum_history = new_enum_history; | |
1625 | max_enum = enum_history; | |
1626 | } | |
1627 | else | |
1628 | { | |
1629 | new_enum_history->next = enum_history; | |
1630 | enum_history = new_enum_history; | |
1631 | ||
d51347f9 | 1632 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1633 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1634 | max_enum = new_enum_history; |
25d8f0a2 TS |
1635 | } |
1636 | } | |
1637 | ||
1638 | ||
d51347f9 | 1639 | /* Function to free enum kind history. */ |
25d8f0a2 | 1640 | |
d51347f9 | 1641 | void |
636dff67 | 1642 | gfc_free_enum_history (void) |
25d8f0a2 | 1643 | { |
d51347f9 TB |
1644 | enumerator_history *current = enum_history; |
1645 | enumerator_history *next; | |
25d8f0a2 TS |
1646 | |
1647 | while (current != NULL) | |
1648 | { | |
1649 | next = current->next; | |
cede9502 | 1650 | free (current); |
25d8f0a2 TS |
1651 | current = next; |
1652 | } | |
1653 | max_enum = NULL; | |
1654 | enum_history = NULL; | |
1655 | } | |
1656 | ||
1657 | ||
6de9cd9a DN |
1658 | /* Function called by variable_decl() that adds an initialization |
1659 | expression to a symbol. */ | |
1660 | ||
524af0d6 | 1661 | static bool |
66e4ab31 | 1662 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1663 | { |
1664 | symbol_attribute attr; | |
1665 | gfc_symbol *sym; | |
1666 | gfc_expr *init; | |
1667 | ||
1668 | init = *initp; | |
08a6b8e0 | 1669 | if (find_special (name, &sym, false)) |
524af0d6 | 1670 | return false; |
6de9cd9a DN |
1671 | |
1672 | attr = sym->attr; | |
1673 | ||
1674 | /* If this symbol is confirming an implicit parameter type, | |
1675 | then an initialization expression is not allowed. */ | |
1676 | if (attr.flavor == FL_PARAMETER | |
1677 | && sym->value != NULL | |
1678 | && *initp != NULL) | |
1679 | { | |
c4100eae | 1680 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1681 | sym->name); |
524af0d6 | 1682 | return false; |
6de9cd9a DN |
1683 | } |
1684 | ||
1685 | if (init == NULL) | |
1686 | { | |
1687 | /* An initializer is required for PARAMETER declarations. */ | |
1688 | if (attr.flavor == FL_PARAMETER) | |
1689 | { | |
1690 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1691 | return false; |
6de9cd9a DN |
1692 | } |
1693 | } | |
1694 | else | |
1695 | { | |
1696 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1697 | initializer. */ |
6de9cd9a DN |
1698 | if (sym->attr.data) |
1699 | { | |
c4100eae | 1700 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1701 | "appears in a DATA statement", sym->name); |
524af0d6 | 1702 | return false; |
6de9cd9a DN |
1703 | } |
1704 | ||
75d17889 | 1705 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1706 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1707 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1708 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1709 | && !sym->attr.proc_pointer |
524af0d6 JB |
1710 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1711 | return false; | |
6de9cd9a | 1712 | |
bc21d315 | 1713 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1714 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1715 | { |
1716 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1717 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1718 | return false; | |
51b128a0 | 1719 | |
bc21d315 | 1720 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1721 | { |
f622221a | 1722 | gfc_charlen_t clen; |
66e4ab31 SK |
1723 | /* If there are multiple CHARACTER variables declared on the |
1724 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1725 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1726 | |
a99288e5 PT |
1727 | if (sym->attr.flavor == FL_PARAMETER) |
1728 | { | |
1729 | if (init->expr_type == EXPR_CONSTANT) | |
1730 | { | |
1731 | clen = init->value.character.length; | |
b7e75771 | 1732 | sym->ts.u.cl->length |
f622221a | 1733 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1734 | NULL, clen); |
a99288e5 PT |
1735 | } |
1736 | else if (init->expr_type == EXPR_ARRAY) | |
1737 | { | |
c004a341 | 1738 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1739 | { |
1740 | const gfc_expr *length = init->ts.u.cl->length; | |
1741 | if (length->expr_type != EXPR_CONSTANT) | |
1742 | { | |
1743 | gfc_error ("Cannot initialize parameter array " | |
1744 | "at %L " | |
1745 | "with variable length elements", | |
1746 | &sym->declared_at); | |
1747 | return false; | |
1748 | } | |
1749 | clen = mpz_get_si (length->value.integer); | |
1750 | } | |
dc0f176a SK |
1751 | else if (init->value.constructor) |
1752 | { | |
1753 | gfc_constructor *c; | |
70112e2a | 1754 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1755 | clen = c->expr->value.character.length; |
1756 | } | |
1757 | else | |
1758 | gcc_unreachable (); | |
b7e75771 | 1759 | sym->ts.u.cl->length |
f622221a | 1760 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1761 | NULL, clen); |
a99288e5 | 1762 | } |
bc21d315 JW |
1763 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1764 | sym->ts.u.cl->length = | |
1765 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1766 | } |
df7cc9b5 FW |
1767 | } |
1768 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1769 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1770 | { |
d30ecc9c SK |
1771 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1772 | return false; | |
1773 | ||
aeb8c028 JJ |
1774 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1775 | false); | |
1776 | /* resolve_charlen will complain later on if the length | |
1777 | is too large. Just skeep the initialization in that case. */ | |
1778 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1779 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1780 | { |
aeb8c028 JJ |
1781 | HOST_WIDE_INT len |
1782 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1783 | ||
1784 | if (init->expr_type == EXPR_CONSTANT) | |
1785 | gfc_set_constant_character_len (len, init, -1); | |
1786 | else if (init->expr_type == EXPR_ARRAY) | |
1787 | { | |
1788 | gfc_constructor *c; | |
b7e75771 | 1789 | |
aeb8c028 JJ |
1790 | /* Build a new charlen to prevent simplification from |
1791 | deleting the length before it is resolved. */ | |
1792 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1793 | init->ts.u.cl->length | |
1794 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 1795 | |
aeb8c028 JJ |
1796 | for (c = gfc_constructor_first (init->value.constructor); |
1797 | c; c = gfc_constructor_next (c)) | |
1798 | gfc_set_constant_character_len (len, c->expr, -1); | |
1799 | } | |
df7cc9b5 FW |
1800 | } |
1801 | } | |
1802 | } | |
1803 | ||
f5ca06e6 DK |
1804 | /* If sym is implied-shape, set its upper bounds from init. */ |
1805 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1806 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1807 | { | |
1808 | int dim; | |
1809 | ||
1810 | if (init->rank == 0) | |
1811 | { | |
1812 | gfc_error ("Can't initialize implied-shape array at %L" | |
1813 | " with scalar", &sym->declared_at); | |
524af0d6 | 1814 | return false; |
f5ca06e6 | 1815 | } |
f5ca06e6 DK |
1816 | |
1817 | /* Shape should be present, we get an initialization expression. */ | |
1818 | gcc_assert (init->shape); | |
1819 | ||
1820 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1821 | { | |
1822 | int k; | |
cdffe788 | 1823 | gfc_expr *e, *lower; |
f5acf0f2 | 1824 | |
f5ca06e6 | 1825 | lower = sym->as->lower[dim]; |
cdffe788 | 1826 | |
70112e2a | 1827 | /* If the lower bound is an array element from another |
cdffe788 SK |
1828 | parameterized array, then it is marked with EXPR_VARIABLE and |
1829 | is an initialization expression. Try to reduce it. */ | |
1830 | if (lower->expr_type == EXPR_VARIABLE) | |
1831 | gfc_reduce_init_expr (lower); | |
1832 | ||
1833 | if (lower->expr_type == EXPR_CONSTANT) | |
1834 | { | |
1835 | /* All dimensions must be without upper bound. */ | |
1836 | gcc_assert (!sym->as->upper[dim]); | |
1837 | ||
1838 | k = lower->ts.kind; | |
1839 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1840 | mpz_add (e->value.integer, lower->value.integer, | |
1841 | init->shape[dim]); | |
1842 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1843 | sym->as->upper[dim] = e; | |
1844 | } | |
1845 | else | |
f5ca06e6 DK |
1846 | { |
1847 | gfc_error ("Non-constant lower bound in implied-shape" | |
1848 | " declaration at %L", &lower->where); | |
524af0d6 | 1849 | return false; |
f5ca06e6 | 1850 | } |
f5ca06e6 DK |
1851 | } |
1852 | ||
1853 | sym->as->type = AS_EXPLICIT; | |
1854 | } | |
1855 | ||
a8b3b0b6 CR |
1856 | /* Need to check if the expression we initialized this |
1857 | to was one of the iso_c_binding named constants. If so, | |
1858 | and we're a parameter (constant), let it be iso_c. | |
1859 | For example: | |
1860 | integer(c_int), parameter :: my_int = c_int | |
1861 | integer(my_int) :: my_int_2 | |
1862 | If we mark my_int as iso_c (since we can see it's value | |
1863 | is equal to one of the named constants), then my_int_2 | |
1864 | will be considered C interoperable. */ | |
f6288c24 | 1865 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
1866 | { |
1867 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1868 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1869 | /* attr bits needed for module files. */ | |
1870 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1871 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1872 | if (init->ts.is_iso_c) | |
1873 | sym->ts.f90_type = init->ts.f90_type; | |
1874 | } | |
b7e75771 | 1875 | |
6de9cd9a DN |
1876 | /* Add initializer. Make sure we keep the ranks sane. */ |
1877 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1878 | { |
1879 | mpz_t size; | |
1880 | gfc_expr *array; | |
a9b43781 PT |
1881 | int n; |
1882 | if (sym->attr.flavor == FL_PARAMETER | |
1883 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1884 | && spec_size (sym->as, &size) |
a9b43781 PT |
1885 | && mpz_cmp_si (size, 0) > 0) |
1886 | { | |
b7e75771 JD |
1887 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1888 | &init->where); | |
a9b43781 | 1889 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1890 | gfc_constructor_append_expr (&array->value.constructor, |
1891 | n == 0 | |
1892 | ? init | |
1893 | : gfc_copy_expr (init), | |
1894 | &init->where); | |
f5acf0f2 | 1895 | |
a9b43781 PT |
1896 | array->shape = gfc_get_shape (sym->as->rank); |
1897 | for (n = 0; n < sym->as->rank; n++) | |
1898 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1899 | ||
1900 | init = array; | |
1901 | mpz_clear (size); | |
1902 | } | |
1903 | init->rank = sym->as->rank; | |
1904 | } | |
6de9cd9a DN |
1905 | |
1906 | sym->value = init; | |
ef7236d2 DF |
1907 | if (sym->attr.save == SAVE_NONE) |
1908 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1909 | *initp = NULL; |
1910 | } | |
1911 | ||
524af0d6 | 1912 | return true; |
6de9cd9a DN |
1913 | } |
1914 | ||
1915 | ||
1916 | /* Function called by variable_decl() that adds a name to a structure | |
1917 | being built. */ | |
1918 | ||
524af0d6 | 1919 | static bool |
636dff67 SK |
1920 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1921 | gfc_array_spec **as) | |
6de9cd9a | 1922 | { |
f6288c24 | 1923 | gfc_state_data *s; |
6de9cd9a DN |
1924 | gfc_component *c; |
1925 | ||
619dd721 | 1926 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1927 | constructing, it must have the pointer attribute. */ |
619dd721 | 1928 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1929 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1930 | && current_attr.pointer == 0) |
1931 | { | |
bf9f15ee PT |
1932 | if (current_attr.allocatable |
1933 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
1934 | "must have the POINTER attribute")) | |
1935 | { | |
1936 | return false; | |
1937 | } | |
1938 | else if (current_attr.allocatable == 0) | |
1939 | { | |
9cbf8673 JW |
1940 | gfc_error ("Component at %C must have the POINTER attribute"); |
1941 | return false; | |
1942 | } | |
6de9cd9a | 1943 | } |
9cbf8673 JW |
1944 | |
1945 | /* F03:C437. */ | |
1946 | if (current_ts.type == BT_CLASS | |
1947 | && !(current_attr.pointer || current_attr.allocatable)) | |
1948 | { | |
1949 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
1950 | "or pointer", name); | |
1951 | return false; | |
bf9f15ee | 1952 | } |
6de9cd9a | 1953 | |
636dff67 | 1954 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1955 | { |
1956 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1957 | { | |
1958 | gfc_error ("Array component of structure at %C must have explicit " | |
1959 | "or deferred shape"); | |
524af0d6 | 1960 | return false; |
6de9cd9a DN |
1961 | } |
1962 | } | |
1963 | ||
f6288c24 FR |
1964 | /* If we are in a nested union/map definition, gfc_add_component will not |
1965 | properly find repeated components because: | |
6442a6f4 | 1966 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
1967 | and maps are implicity chained so nested components may conflict. |
1968 | (ii) Unions and maps are not linked as components of their parent | |
1969 | structures until after they are parsed. | |
1970 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
1971 | we search each block directly from the parse stack until we find the top | |
1972 | level structure. */ | |
1973 | ||
1974 | s = gfc_state_stack; | |
1975 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
1976 | { | |
1977 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
1978 | { | |
1979 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
1980 | if (c != NULL) | |
1981 | { | |
2f029c08 | 1982 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
1983 | name, &c->loc); |
1984 | return false; | |
1985 | } | |
1986 | /* Break after we've searched the entire chain. */ | |
1987 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
1988 | break; | |
1989 | s = s->previous; | |
1990 | } | |
1991 | } | |
1992 | ||
524af0d6 JB |
1993 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1994 | return false; | |
6de9cd9a DN |
1995 | |
1996 | c->ts = current_ts; | |
bc21d315 JW |
1997 | if (c->ts.type == BT_CHARACTER) |
1998 | c->ts.u.cl = cl; | |
5bab4c96 PT |
1999 | |
2000 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2001 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2002 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2003 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2004 | ||
d4b7d0f0 | 2005 | c->attr = current_attr; |
6de9cd9a DN |
2006 | |
2007 | c->initializer = *init; | |
2008 | *init = NULL; | |
2009 | ||
2010 | c->as = *as; | |
2011 | if (c->as != NULL) | |
be59db2d TB |
2012 | { |
2013 | if (c->as->corank) | |
2014 | c->attr.codimension = 1; | |
2015 | if (c->as->rank) | |
2016 | c->attr.dimension = 1; | |
2017 | } | |
6de9cd9a DN |
2018 | *as = NULL; |
2019 | ||
7fc61626 | 2020 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2021 | |
6de9cd9a | 2022 | /* Check array components. */ |
d4b7d0f0 | 2023 | if (!c->attr.dimension) |
2e23972e | 2024 | goto scalar; |
6de9cd9a | 2025 | |
d4b7d0f0 | 2026 | if (c->attr.pointer) |
6de9cd9a DN |
2027 | { |
2028 | if (c->as->type != AS_DEFERRED) | |
2029 | { | |
5046aff5 PT |
2030 | gfc_error ("Pointer array component of structure at %C must have a " |
2031 | "deferred shape"); | |
a4f15a7d | 2032 | return false; |
5046aff5 PT |
2033 | } |
2034 | } | |
d4b7d0f0 | 2035 | else if (c->attr.allocatable) |
5046aff5 PT |
2036 | { |
2037 | if (c->as->type != AS_DEFERRED) | |
2038 | { | |
2039 | gfc_error ("Allocatable component of structure at %C must have a " | |
2040 | "deferred shape"); | |
a4f15a7d | 2041 | return false; |
6de9cd9a DN |
2042 | } |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | if (c->as->type != AS_EXPLICIT) | |
2047 | { | |
636dff67 SK |
2048 | gfc_error ("Array component of structure at %C must have an " |
2049 | "explicit shape"); | |
a4f15a7d | 2050 | return false; |
6de9cd9a DN |
2051 | } |
2052 | } | |
2053 | ||
2e23972e JW |
2054 | scalar: |
2055 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2056 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2057 | |
5bab4c96 PT |
2058 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2059 | { | |
2060 | gfc_symbol *sym; | |
2061 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2062 | 0, &sym); | |
2063 | if (sym == NULL) | |
2064 | { | |
2065 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2066 | "in the type parameter name list at %L", | |
2067 | c->name, &gfc_current_block ()->declared_at); | |
2068 | return false; | |
2069 | } | |
2070 | sym->ts = c->ts; | |
2071 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2072 | sym->attr.pdt_len = c->attr.pdt_len; | |
2073 | if (c->initializer) | |
2074 | sym->value = gfc_copy_expr (c->initializer); | |
2075 | sym->attr.flavor = FL_VARIABLE; | |
2076 | } | |
2077 | ||
2078 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2079 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2080 | && decl_type_param_list) | |
2081 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2082 | ||
a4f15a7d | 2083 | return true; |
6de9cd9a DN |
2084 | } |
2085 | ||
2086 | ||
2087 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2088 | ||
2089 | match | |
636dff67 | 2090 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2091 | { |
2092 | gfc_symbol *sym; | |
576f6da6 | 2093 | match m, m2 = MATCH_NO; |
6de9cd9a | 2094 | |
576f6da6 TB |
2095 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2096 | return MATCH_ERROR; | |
2097 | ||
2098 | if (m == MATCH_NO) | |
2099 | { | |
2100 | locus old_loc; | |
2101 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2102 | ||
94241120 | 2103 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2104 | return m2; |
2105 | ||
2106 | old_loc = gfc_current_locus; | |
2107 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2108 | return MATCH_ERROR; | |
2109 | if (m2 != MATCH_YES | |
2110 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2111 | return MATCH_ERROR; | |
2112 | if (m2 == MATCH_NO) | |
2113 | { | |
2114 | gfc_current_locus = old_loc; | |
2115 | return MATCH_NO; | |
2116 | } | |
2117 | } | |
6de9cd9a DN |
2118 | |
2119 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2120 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2121 | { | |
2122 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2123 | return MATCH_ERROR; | |
2124 | } | |
2125 | ||
2126 | gfc_intrinsic_symbol (sym); | |
2127 | ||
2128 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2129 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2130 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2131 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2132 | return MATCH_ERROR; |
2133 | ||
b7e75771 | 2134 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2135 | |
576f6da6 TB |
2136 | /* Invalid per F2008, C512. */ |
2137 | if (m2 == MATCH_YES) | |
2138 | { | |
2139 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2140 | return MATCH_ERROR; | |
2141 | } | |
2142 | ||
6de9cd9a DN |
2143 | return MATCH_YES; |
2144 | } | |
2145 | ||
2146 | ||
80f95228 JW |
2147 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2148 | ||
2149 | static match | |
2150 | match_pointer_init (gfc_expr **init, int procptr) | |
2151 | { | |
2152 | match m; | |
2153 | ||
f6288c24 | 2154 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2155 | { |
2156 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2157 | "a PURE procedure"); | |
2158 | return MATCH_ERROR; | |
2159 | } | |
ccd7751b | 2160 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2161 | |
eea58adb | 2162 | /* Match NULL() initialization. */ |
80f95228 JW |
2163 | m = gfc_match_null (init); |
2164 | if (m != MATCH_NO) | |
2165 | return m; | |
2166 | ||
2167 | /* Match non-NULL initialization. */ | |
837c4b78 | 2168 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2169 | gfc_matching_procptr_assignment = procptr; |
2170 | m = gfc_match_rvalue (init); | |
837c4b78 | 2171 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2172 | gfc_matching_procptr_assignment = 0; |
2173 | if (m == MATCH_ERROR) | |
2174 | return MATCH_ERROR; | |
2175 | else if (m == MATCH_NO) | |
2176 | { | |
2177 | gfc_error ("Error in pointer initialization at %C"); | |
2178 | return MATCH_ERROR; | |
2179 | } | |
2180 | ||
dc9a54fa JW |
2181 | if (!procptr && !gfc_resolve_expr (*init)) |
2182 | return MATCH_ERROR; | |
f5acf0f2 | 2183 | |
524af0d6 JB |
2184 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2185 | "initialization at %C")) | |
80f95228 JW |
2186 | return MATCH_ERROR; |
2187 | ||
2188 | return MATCH_YES; | |
2189 | } | |
2190 | ||
2191 | ||
524af0d6 | 2192 | static bool |
bb9de0c4 JW |
2193 | check_function_name (char *name) |
2194 | { | |
2195 | /* In functions that have a RESULT variable defined, the function name always | |
2196 | refers to function calls. Therefore, the name is not allowed to appear in | |
2197 | specification statements. When checking this, be careful about | |
2198 | 'hidden' procedure pointer results ('ppr@'). */ | |
2199 | ||
2200 | if (gfc_current_state () == COMP_FUNCTION) | |
2201 | { | |
2202 | gfc_symbol *block = gfc_current_block (); | |
2203 | if (block && block->result && block->result != block | |
2204 | && strcmp (block->result->name, "ppr@") != 0 | |
2205 | && strcmp (block->name, name) == 0) | |
2206 | { | |
c4100eae | 2207 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 2208 | return false; |
bb9de0c4 JW |
2209 | } |
2210 | } | |
2211 | ||
524af0d6 | 2212 | return true; |
bb9de0c4 JW |
2213 | } |
2214 | ||
2215 | ||
6de9cd9a DN |
2216 | /* Match a variable name with an optional initializer. When this |
2217 | subroutine is called, a variable is expected to be parsed next. | |
2218 | Depending on what is happening at the moment, updates either the | |
2219 | symbol table or the current interface. */ | |
2220 | ||
2221 | static match | |
949d5b72 | 2222 | variable_decl (int elem) |
6de9cd9a DN |
2223 | { |
2224 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2225 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2226 | gfc_expr *initializer, *char_len; |
2227 | gfc_array_spec *as; | |
83d890b9 | 2228 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2229 | gfc_charlen *cl; |
e69afb29 | 2230 | bool cl_deferred; |
6de9cd9a DN |
2231 | locus var_locus; |
2232 | match m; | |
524af0d6 | 2233 | bool t; |
83d890b9 | 2234 | gfc_symbol *sym; |
6de9cd9a DN |
2235 | |
2236 | initializer = NULL; | |
2237 | as = NULL; | |
83d890b9 | 2238 | cp_as = NULL; |
6de9cd9a DN |
2239 | |
2240 | /* When we get here, we've just matched a list of attributes and | |
2241 | maybe a type and a double colon. The next thing we expect to see | |
2242 | is the name of the symbol. */ | |
6f855a26 FR |
2243 | |
2244 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2245 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2246 | m = MATCH_NO; | |
2247 | gfc_gobble_whitespace (); | |
2248 | if (gfc_peek_ascii_char () == '%') | |
2249 | { | |
2250 | gfc_next_ascii_char (); | |
2251 | m = gfc_match ("fill"); | |
2252 | } | |
2253 | ||
6de9cd9a | 2254 | if (m != MATCH_YES) |
6f855a26 FR |
2255 | { |
2256 | m = gfc_match_name (name); | |
2257 | if (m != MATCH_YES) | |
2258 | goto cleanup; | |
2259 | } | |
2260 | ||
2261 | else | |
2262 | { | |
2263 | m = MATCH_ERROR; | |
2264 | if (gfc_current_state () != COMP_STRUCTURE) | |
2265 | { | |
2266 | if (flag_dec_structure) | |
2267 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2268 | else | |
2269 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2270 | "%<-fdec-structure%>", "%FILL"); | |
2271 | goto cleanup; | |
2272 | } | |
2273 | ||
2274 | if (attr_seen) | |
2275 | { | |
2276 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2277 | goto cleanup; | |
2278 | } | |
2279 | ||
2280 | /* %FILL components are given invalid fortran names. */ | |
2281 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2282 | m = MATCH_YES; | |
2283 | } | |
6de9cd9a | 2284 | |
63645982 | 2285 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2286 | |
2287 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2288 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2289 | if (m == MATCH_ERROR) |
6de9cd9a | 2290 | goto cleanup; |
25d8f0a2 | 2291 | |
6de9cd9a DN |
2292 | if (m == MATCH_NO) |
2293 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2294 | else if (current_as |
524af0d6 | 2295 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2296 | { |
2297 | m = MATCH_ERROR; | |
2298 | goto cleanup; | |
2299 | } | |
6de9cd9a | 2300 | |
c61819ff | 2301 | if (flag_cray_pointer) |
11126dc0 AL |
2302 | cp_as = gfc_copy_array_spec (as); |
2303 | ||
f5ca06e6 DK |
2304 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2305 | determine (and check) whether it can be implied-shape. If it | |
2306 | was parsed as assumed-size, change it because PARAMETERs can not | |
09ef33c1 SK |
2307 | be assumed-size. |
2308 | ||
2309 | An explicit-shape-array cannot appear under several conditions. | |
2310 | That check is done here as well. */ | |
f5ca06e6 DK |
2311 | if (as) |
2312 | { | |
2313 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2314 | { | |
2315 | m = MATCH_ERROR; | |
c4100eae | 2316 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2317 | name, &var_locus); |
2318 | goto cleanup; | |
2319 | } | |
2320 | ||
2321 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2322 | && current_attr.flavor == FL_PARAMETER) | |
2323 | as->type = AS_IMPLIED_SHAPE; | |
2324 | ||
2325 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2326 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2327 | &var_locus)) |
f5ca06e6 DK |
2328 | { |
2329 | m = MATCH_ERROR; | |
2330 | goto cleanup; | |
2331 | } | |
09ef33c1 SK |
2332 | |
2333 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2334 | constant expressions shall appear only in a subprogram, derived | |
2335 | type definition, BLOCK construct, or interface body. */ | |
2336 | if (as->type == AS_EXPLICIT | |
2337 | && gfc_current_state () != COMP_BLOCK | |
2338 | && gfc_current_state () != COMP_DERIVED | |
2339 | && gfc_current_state () != COMP_FUNCTION | |
2340 | && gfc_current_state () != COMP_INTERFACE | |
2341 | && gfc_current_state () != COMP_SUBROUTINE) | |
2342 | { | |
2343 | gfc_expr *e; | |
2344 | bool not_constant = false; | |
2345 | ||
2346 | for (int i = 0; i < as->rank; i++) | |
2347 | { | |
2348 | e = gfc_copy_expr (as->lower[i]); | |
2349 | gfc_resolve_expr (e); | |
2350 | gfc_simplify_expr (e, 0); | |
2351 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2352 | { | |
2353 | not_constant = true; | |
2354 | break; | |
2355 | } | |
2356 | gfc_free_expr (e); | |
2357 | ||
2358 | e = gfc_copy_expr (as->upper[i]); | |
2359 | gfc_resolve_expr (e); | |
2360 | gfc_simplify_expr (e, 0); | |
2361 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2362 | { | |
2363 | not_constant = true; | |
2364 | break; | |
2365 | } | |
2366 | gfc_free_expr (e); | |
2367 | } | |
2368 | ||
2369 | if (not_constant) | |
2370 | { | |
2371 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); | |
2372 | m = MATCH_ERROR; | |
2373 | goto cleanup; | |
2374 | } | |
2375 | } | |
f5ca06e6 DK |
2376 | } |
2377 | ||
6de9cd9a DN |
2378 | char_len = NULL; |
2379 | cl = NULL; | |
e69afb29 | 2380 | cl_deferred = false; |
6de9cd9a DN |
2381 | |
2382 | if (current_ts.type == BT_CHARACTER) | |
2383 | { | |
2767f2cc | 2384 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2385 | { |
2386 | case MATCH_YES: | |
b76e28c6 | 2387 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2388 | |
2389 | cl->length = char_len; | |
2390 | break; | |
2391 | ||
949d5b72 | 2392 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2393 | element. Also copy assumed lengths. */ |
6de9cd9a | 2394 | case MATCH_NO: |
9b21a380 | 2395 | if (elem > 1 |
bc21d315 JW |
2396 | && (current_ts.u.cl->length == NULL |
2397 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2398 | { |
b76e28c6 | 2399 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2400 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2401 | } |
2402 | else | |
bc21d315 | 2403 | cl = current_ts.u.cl; |
949d5b72 | 2404 | |
e69afb29 SK |
2405 | cl_deferred = current_ts.deferred; |
2406 | ||
6de9cd9a DN |
2407 | break; |
2408 | ||
2409 | case MATCH_ERROR: | |
2410 | goto cleanup; | |
2411 | } | |
2412 | } | |
2413 | ||
4668d6f9 PT |
2414 | /* The dummy arguments and result of the abreviated form of MODULE |
2415 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2416 | if (gfc_current_ns->proc_name | |
2417 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2418 | { | |
2419 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2420 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2421 | { | |
2422 | m = MATCH_ERROR; | |
811582ec | 2423 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2424 | "in the corresponding interface for MODULE " |
811582ec | 2425 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2426 | gfc_current_ns->proc_name->name); |
2427 | goto cleanup; | |
2428 | } | |
2429 | } | |
2430 | ||
6f855a26 FR |
2431 | /* %FILL components may not have initializers. */ |
2432 | if (strncmp (name, "%FILL", 5) == 0 && gfc_match_eos () != MATCH_YES) | |
2433 | { | |
2434 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2435 | m = MATCH_ERROR; | |
2436 | goto cleanup; | |
2437 | } | |
2438 | ||
83d890b9 | 2439 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2440 | and this is not a component declaration, |
66e4ab31 | 2441 | then we want to set the type & bail out. */ |
f6288c24 | 2442 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2443 | { |
2444 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2445 | if (sym != NULL && sym->attr.cray_pointee) | |
2446 | { | |
2447 | sym->ts.type = current_ts.type; | |
2448 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2449 | sym->ts.u.cl = cl; |
2450 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2451 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2452 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2453 | m = MATCH_YES; |
f5acf0f2 | 2454 | |
83d890b9 AL |
2455 | /* Check to see if we have an array specification. */ |
2456 | if (cp_as != NULL) | |
2457 | { | |
2458 | if (sym->as != NULL) | |
2459 | { | |
e25a0da3 | 2460 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2461 | gfc_free_array_spec (cp_as); |
2462 | m = MATCH_ERROR; | |
2463 | goto cleanup; | |
2464 | } | |
2465 | else | |
2466 | { | |
524af0d6 | 2467 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2468 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2469 | |
83d890b9 | 2470 | /* Fix the array spec. */ |
d51347f9 | 2471 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2472 | if (m == MATCH_ERROR) |
2473 | goto cleanup; | |
2474 | } | |
d51347f9 | 2475 | } |
83d890b9 AL |
2476 | goto cleanup; |
2477 | } | |
2478 | else | |
2479 | { | |
2480 | gfc_free_array_spec (cp_as); | |
2481 | } | |
2482 | } | |
d51347f9 | 2483 | |
3070bab4 JW |
2484 | /* Procedure pointer as function result. */ |
2485 | if (gfc_current_state () == COMP_FUNCTION | |
2486 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2487 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2488 | strcpy (name, "ppr@"); | |
2489 | ||
2490 | if (gfc_current_state () == COMP_FUNCTION | |
2491 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2492 | && gfc_current_block ()->result | |
2493 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2494 | strcpy (name, "ppr@"); | |
d51347f9 | 2495 | |
6de9cd9a DN |
2496 | /* OK, we've successfully matched the declaration. Now put the |
2497 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2498 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2499 | perfectly legal: |
2500 | ||
2501 | integer, parameter :: i = huge(i) | |
2502 | ||
2503 | This is only true for parameters or variables of a basic type. | |
2504 | For components of derived types, it is not true, so we don't | |
2505 | create a symbol for those yet. If we fail to create the symbol, | |
2506 | bail out. */ | |
f6288c24 | 2507 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2508 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2509 | { |
72af9f0b PT |
2510 | m = MATCH_ERROR; |
2511 | goto cleanup; | |
2512 | } | |
2513 | ||
524af0d6 | 2514 | if (!check_function_name (name)) |
6de9cd9a | 2515 | { |
6de9cd9a DN |
2516 | m = MATCH_ERROR; |
2517 | goto cleanup; | |
2518 | } | |
2519 | ||
294fbfc8 TS |
2520 | /* We allow old-style initializations of the form |
2521 | integer i /2/, j(4) /3*3, 1/ | |
2522 | (if no colon has been seen). These are different from data | |
2523 | statements in that initializers are only allowed to apply to the | |
2524 | variable immediately preceding, i.e. | |
2525 | integer i, j /1, 2/ | |
2526 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2527 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2528 | |
2529 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2530 | { | |
524af0d6 JB |
2531 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2532 | "initialization at %C")) | |
294fbfc8 | 2533 | return MATCH_ERROR; |
f6288c24 FR |
2534 | |
2535 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2536 | but not components of derived types. */ | |
b18f1efc JJ |
2537 | else if (gfc_current_state () == COMP_DERIVED) |
2538 | { | |
2539 | gfc_error ("Invalid old style initialization for derived type " | |
2540 | "component at %C"); | |
2541 | m = MATCH_ERROR; | |
2542 | goto cleanup; | |
2543 | } | |
f5acf0f2 | 2544 | |
f6288c24 FR |
2545 | /* For structure components, read the initializer as a special |
2546 | expression and let the rest of this function apply the initializer | |
2547 | as usual. */ | |
2548 | else if (gfc_comp_struct (gfc_current_state ())) | |
2549 | { | |
2550 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2551 | if (m == MATCH_NO) | |
2552 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2553 | name); | |
2554 | if (m != MATCH_YES) | |
2555 | goto cleanup; | |
2556 | } | |
2557 | ||
2558 | /* Otherwise we treat the old style initialization just like a | |
2559 | DATA declaration for the current variable. */ | |
2560 | else | |
2561 | return match_old_style_init (name); | |
294fbfc8 TS |
2562 | } |
2563 | ||
6de9cd9a DN |
2564 | /* The double colon must be present in order to have initializers. |
2565 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2566 | if (colon_seen) | |
2567 | { | |
2568 | if (gfc_match (" =>") == MATCH_YES) | |
2569 | { | |
6de9cd9a DN |
2570 | if (!current_attr.pointer) |
2571 | { | |
2572 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2573 | m = MATCH_ERROR; | |
2574 | goto cleanup; | |
2575 | } | |
2576 | ||
80f95228 | 2577 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2578 | if (m != MATCH_YES) |
2579 | goto cleanup; | |
6de9cd9a DN |
2580 | } |
2581 | else if (gfc_match_char ('=') == MATCH_YES) | |
2582 | { | |
2583 | if (current_attr.pointer) | |
2584 | { | |
a4d9b221 TB |
2585 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2586 | "not %<=%>"); | |
6de9cd9a DN |
2587 | m = MATCH_ERROR; |
2588 | goto cleanup; | |
2589 | } | |
2590 | ||
2591 | m = gfc_match_init_expr (&initializer); | |
2592 | if (m == MATCH_NO) | |
2593 | { | |
2594 | gfc_error ("Expected an initialization expression at %C"); | |
2595 | m = MATCH_ERROR; | |
2596 | } | |
2597 | ||
ade20620 | 2598 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2599 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2600 | { |
636dff67 SK |
2601 | gfc_error ("Initialization of variable at %C is not allowed in " |
2602 | "a PURE procedure"); | |
6de9cd9a DN |
2603 | m = MATCH_ERROR; |
2604 | } | |
2605 | ||
ccd7751b | 2606 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2607 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2608 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2609 | ||
6de9cd9a DN |
2610 | if (m != MATCH_YES) |
2611 | goto cleanup; | |
2612 | } | |
cb44ab82 VL |
2613 | } |
2614 | ||
5046aff5 | 2615 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2616 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2617 | { |
636dff67 SK |
2618 | gfc_error ("Initialization of allocatable component at %C is not " |
2619 | "allowed"); | |
5046aff5 PT |
2620 | m = MATCH_ERROR; |
2621 | goto cleanup; | |
2622 | } | |
2623 | ||
18a4e7e3 PT |
2624 | if (gfc_current_state () == COMP_DERIVED |
2625 | && gfc_current_block ()->attr.pdt_template) | |
2626 | { | |
2627 | gfc_symbol *param; | |
2628 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2629 | 0, ¶m); | |
2630 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2631 | { | |
2632 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2633 | "not appear in the type parameter list at %L", | |
2634 | &gfc_current_block ()->declared_at); | |
2635 | m = MATCH_ERROR; | |
2636 | goto cleanup; | |
2637 | } | |
2638 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2639 | { | |
2640 | gfc_error ("The component at %C that appears in the type parameter " | |
2641 | "list at %L has neither the KIND nor LEN attribute", | |
2642 | &gfc_current_block ()->declared_at); | |
2643 | m = MATCH_ERROR; | |
2644 | goto cleanup; | |
2645 | } | |
2646 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2647 | { | |
2648 | gfc_error ("The component at %C which is a type parameter must be " | |
2649 | "a scalar"); | |
2650 | m = MATCH_ERROR; | |
2651 | goto cleanup; | |
2652 | } | |
2653 | else if (param && initializer) | |
2654 | param->value = gfc_copy_expr (initializer); | |
2655 | } | |
2656 | ||
54b4ba60 | 2657 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2658 | NULL here, because we sometimes also need to check if a |
2659 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2660 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2661 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2662 | else | |
54b4ba60 | 2663 | { |
5046aff5 | 2664 | if (current_ts.type == BT_DERIVED |
636dff67 | 2665 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2666 | initializer = gfc_default_initializer (¤t_ts); |
2667 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2668 | |
2669 | /* If we match a nested structure definition we expect to see the | |
2670 | * body even if the variable declarations blow up, so we need to keep | |
2671 | * the structure declaration around. */ | |
2672 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2673 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2674 | } |
6de9cd9a | 2675 | |
524af0d6 | 2676 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2677 | |
2678 | cleanup: | |
2679 | /* Free stuff up and return. */ | |
2680 | gfc_free_expr (initializer); | |
2681 | gfc_free_array_spec (as); | |
2682 | ||
2683 | return m; | |
2684 | } | |
2685 | ||
2686 | ||
b2b81a3f BM |
2687 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2688 | This assumes that the byte size is equal to the kind number for | |
2689 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2690 | |
2691 | match | |
636dff67 | 2692 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2693 | { |
2694 | match m; | |
5cf54585 | 2695 | int original_kind; |
6de9cd9a DN |
2696 | |
2697 | if (gfc_match_char ('*') != MATCH_YES) | |
2698 | return MATCH_NO; | |
2699 | ||
5cf54585 | 2700 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2701 | if (m != MATCH_YES) |
2702 | return MATCH_ERROR; | |
2703 | ||
e45b3c75 ES |
2704 | original_kind = ts->kind; |
2705 | ||
6de9cd9a | 2706 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2707 | if (ts->type == BT_COMPLEX) |
2708 | { | |
2709 | if (ts->kind % 2) | |
636dff67 SK |
2710 | { |
2711 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2712 | gfc_basic_typename (ts->type), original_kind); | |
2713 | return MATCH_ERROR; | |
2714 | } | |
e45b3c75 | 2715 | ts->kind /= 2; |
f4347334 ZG |
2716 | |
2717 | } | |
2718 | ||
203c7ebf | 2719 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2720 | ts->kind = 8; |
2721 | ||
2722 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2723 | { | |
2724 | if (ts->kind == 4) | |
2725 | { | |
203c7ebf | 2726 | if (flag_real4_kind == 8) |
f4347334 | 2727 | ts->kind = 8; |
203c7ebf | 2728 | if (flag_real4_kind == 10) |
f4347334 | 2729 | ts->kind = 10; |
203c7ebf | 2730 | if (flag_real4_kind == 16) |
f4347334 ZG |
2731 | ts->kind = 16; |
2732 | } | |
2733 | ||
2734 | if (ts->kind == 8) | |
2735 | { | |
203c7ebf | 2736 | if (flag_real8_kind == 4) |
f4347334 | 2737 | ts->kind = 4; |
203c7ebf | 2738 | if (flag_real8_kind == 10) |
f4347334 | 2739 | ts->kind = 10; |
203c7ebf | 2740 | if (flag_real8_kind == 16) |
f4347334 ZG |
2741 | ts->kind = 16; |
2742 | } | |
e45b3c75 | 2743 | } |
6de9cd9a | 2744 | |
e7a2d5fb | 2745 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2746 | { |
e45b3c75 | 2747 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2748 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2749 | return MATCH_ERROR; |
2750 | } | |
2751 | ||
70112e2a PT |
2752 | if (!gfc_notify_std (GFC_STD_GNU, |
2753 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2754 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2755 | return MATCH_ERROR; |
2756 | ||
6de9cd9a DN |
2757 | return MATCH_YES; |
2758 | } | |
2759 | ||
2760 | ||
2761 | /* Match a kind specification. Since kinds are generally optional, we | |
2762 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2763 | string is found, then we know we have an error. */ | |
2764 | ||
2765 | match | |
e2d29968 | 2766 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2767 | { |
e2d29968 | 2768 | locus where, loc; |
6de9cd9a DN |
2769 | gfc_expr *e; |
2770 | match m, n; | |
96ee3a4a | 2771 | char c; |
6de9cd9a DN |
2772 | |
2773 | m = MATCH_NO; | |
e2d29968 | 2774 | n = MATCH_YES; |
6de9cd9a | 2775 | e = NULL; |
5bab4c96 | 2776 | saved_kind_expr = NULL; |
6de9cd9a | 2777 | |
e2d29968 PT |
2778 | where = loc = gfc_current_locus; |
2779 | ||
2780 | if (kind_expr_only) | |
2781 | goto kind_expr; | |
6de9cd9a DN |
2782 | |
2783 | if (gfc_match_char ('(') == MATCH_NO) | |
2784 | return MATCH_NO; | |
2785 | ||
2786 | /* Also gobbles optional text. */ | |
2787 | if (gfc_match (" kind = ") == MATCH_YES) | |
2788 | m = MATCH_ERROR; | |
2789 | ||
e2d29968 PT |
2790 | loc = gfc_current_locus; |
2791 | ||
2792 | kind_expr: | |
5bab4c96 | 2793 | |
6de9cd9a | 2794 | n = gfc_match_init_expr (&e); |
e2d29968 | 2795 | |
5bab4c96 PT |
2796 | if (gfc_derived_parameter_expr (e)) |
2797 | { | |
2798 | ts->kind = 0; | |
2799 | saved_kind_expr = gfc_copy_expr (e); | |
2800 | goto close_brackets; | |
2801 | } | |
2802 | ||
6de9cd9a | 2803 | if (n != MATCH_YES) |
e2d29968 | 2804 | { |
1c8bcdf7 | 2805 | if (gfc_matching_function) |
e2d29968 | 2806 | { |
f5acf0f2 | 2807 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2808 | imported parameters and try again after the specification |
2809 | expressions..... */ | |
e2d29968 PT |
2810 | if (gfc_match_char (')') != MATCH_YES) |
2811 | { | |
2812 | gfc_error ("Missing right parenthesis at %C"); | |
2813 | m = MATCH_ERROR; | |
2814 | goto no_match; | |
2815 | } | |
2816 | ||
2817 | gfc_free_expr (e); | |
e2d29968 PT |
2818 | gfc_undo_symbols (); |
2819 | return MATCH_YES; | |
2820 | } | |
2821 | else | |
2822 | { | |
2823 | /* ....or else, the match is real. */ | |
2824 | if (n == MATCH_NO) | |
2825 | gfc_error ("Expected initialization expression at %C"); | |
2826 | if (n != MATCH_YES) | |
2827 | return MATCH_ERROR; | |
2828 | } | |
2829 | } | |
6de9cd9a DN |
2830 | |
2831 | if (e->rank != 0) | |
2832 | { | |
2833 | gfc_error ("Expected scalar initialization expression at %C"); | |
2834 | m = MATCH_ERROR; | |
2835 | goto no_match; | |
2836 | } | |
2837 | ||
51f03c6b | 2838 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 2839 | { |
6de9cd9a DN |
2840 | m = MATCH_ERROR; |
2841 | goto no_match; | |
2842 | } | |
2843 | ||
a8b3b0b6 CR |
2844 | /* Before throwing away the expression, let's see if we had a |
2845 | C interoperable kind (and store the fact). */ | |
2846 | if (e->ts.is_c_interop == 1) | |
2847 | { | |
eea58adb | 2848 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2849 | of the named constants from iso_c_binding. */ |
2850 | ts->is_c_interop = e->ts.is_iso_c; | |
2851 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
2852 | if (e->symtree) |
2853 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 2854 | } |
f5acf0f2 | 2855 | |
6de9cd9a DN |
2856 | gfc_free_expr (e); |
2857 | e = NULL; | |
2858 | ||
a8b3b0b6 CR |
2859 | /* Ignore errors to this point, if we've gotten here. This means |
2860 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2861 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2862 | { |
2863 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2864 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2865 | gfc_current_locus = where; |
2866 | return MATCH_ERROR; | |
6de9cd9a | 2867 | } |
96ee3a4a | 2868 | |
2ec855f1 TB |
2869 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2870 | if, e.g., c_double is used for COMPLEX as the standard | |
2871 | explicitly says that the kind type parameter for complex and real | |
2872 | variable is the same, i.e. c_float == c_float_complex. */ | |
2873 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2874 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2875 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2876 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2877 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2878 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2879 | |
5bab4c96 PT |
2880 | close_brackets: |
2881 | ||
96ee3a4a | 2882 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2883 | if ((c = gfc_next_ascii_char ()) != ')' |
2884 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2885 | { |
96ee3a4a TB |
2886 | if (ts->type == BT_CHARACTER) |
2887 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2888 | else | |
2889 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2890 | m = MATCH_ERROR; |
6de9cd9a | 2891 | } |
a8b3b0b6 CR |
2892 | else |
2893 | /* All tests passed. */ | |
2894 | m = MATCH_YES; | |
6de9cd9a | 2895 | |
a8b3b0b6 CR |
2896 | if(m == MATCH_ERROR) |
2897 | gfc_current_locus = where; | |
f4347334 | 2898 | |
203c7ebf | 2899 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2900 | ts->kind = 8; |
2901 | ||
2902 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2903 | { | |
2904 | if (ts->kind == 4) | |
2905 | { | |
203c7ebf | 2906 | if (flag_real4_kind == 8) |
f4347334 | 2907 | ts->kind = 8; |
203c7ebf | 2908 | if (flag_real4_kind == 10) |
f4347334 | 2909 | ts->kind = 10; |
203c7ebf | 2910 | if (flag_real4_kind == 16) |
f4347334 ZG |
2911 | ts->kind = 16; |
2912 | } | |
2913 | ||
2914 | if (ts->kind == 8) | |
2915 | { | |
203c7ebf | 2916 | if (flag_real8_kind == 4) |
f4347334 | 2917 | ts->kind = 4; |
203c7ebf | 2918 | if (flag_real8_kind == 10) |
f4347334 | 2919 | ts->kind = 10; |
203c7ebf | 2920 | if (flag_real8_kind == 16) |
f4347334 ZG |
2921 | ts->kind = 16; |
2922 | } | |
2923 | } | |
2924 | ||
a8b3b0b6 CR |
2925 | /* Return what we know from the test(s). */ |
2926 | return m; | |
6de9cd9a DN |
2927 | |
2928 | no_match: | |
2929 | gfc_free_expr (e); | |
63645982 | 2930 | gfc_current_locus = where; |
6de9cd9a DN |
2931 | return m; |
2932 | } | |
2933 | ||
2934 | ||
187de1ed FXC |
2935 | static match |
2936 | match_char_kind (int * kind, int * is_iso_c) | |
2937 | { | |
2938 | locus where; | |
2939 | gfc_expr *e; | |
2940 | match m, n; | |
51f03c6b | 2941 | bool fail; |
187de1ed FXC |
2942 | |
2943 | m = MATCH_NO; | |
2944 | e = NULL; | |
2945 | where = gfc_current_locus; | |
2946 | ||
2947 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2948 | |
1c8bcdf7 | 2949 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2950 | { |
1c8bcdf7 | 2951 | /* The expression might include use-associated or imported |
f5acf0f2 | 2952 | parameters and try again after the specification |
1c8bcdf7 | 2953 | expressions. */ |
96ee3a4a | 2954 | gfc_free_expr (e); |
96ee3a4a TB |
2955 | gfc_undo_symbols (); |
2956 | return MATCH_YES; | |
2957 | } | |
2958 | ||
187de1ed FXC |
2959 | if (n == MATCH_NO) |
2960 | gfc_error ("Expected initialization expression at %C"); | |
2961 | if (n != MATCH_YES) | |
2962 | return MATCH_ERROR; | |
2963 | ||
2964 | if (e->rank != 0) | |
2965 | { | |
2966 | gfc_error ("Expected scalar initialization expression at %C"); | |
2967 | m = MATCH_ERROR; | |
2968 | goto no_match; | |
2969 | } | |
2970 | ||
87f3a5cf PT |
2971 | if (gfc_derived_parameter_expr (e)) |
2972 | { | |
2973 | saved_kind_expr = e; | |
2974 | *kind = 0; | |
2975 | return MATCH_YES; | |
2976 | } | |
2977 | ||
51f03c6b | 2978 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 2979 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 2980 | if (fail) |
187de1ed | 2981 | { |
187de1ed FXC |
2982 | m = MATCH_ERROR; |
2983 | goto no_match; | |
2984 | } | |
2985 | ||
2986 | gfc_free_expr (e); | |
2987 | ||
2988 | /* Ignore errors to this point, if we've gotten here. This means | |
2989 | we ignore the m=MATCH_ERROR from above. */ | |
2990 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2991 | { | |
2992 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2993 | m = MATCH_ERROR; | |
2994 | } | |
2995 | else | |
2996 | /* All tests passed. */ | |
2997 | m = MATCH_YES; | |
2998 | ||
2999 | if (m == MATCH_ERROR) | |
3000 | gfc_current_locus = where; | |
f5acf0f2 | 3001 | |
187de1ed FXC |
3002 | /* Return what we know from the test(s). */ |
3003 | return m; | |
3004 | ||
3005 | no_match: | |
3006 | gfc_free_expr (e); | |
3007 | gfc_current_locus = where; | |
3008 | return m; | |
3009 | } | |
3010 | ||
8234e5e0 | 3011 | |
6de9cd9a DN |
3012 | /* Match the various kind/length specifications in a CHARACTER |
3013 | declaration. We don't return MATCH_NO. */ | |
3014 | ||
8234e5e0 SK |
3015 | match |
3016 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3017 | { |
187de1ed | 3018 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3019 | gfc_charlen *cl; |
3020 | gfc_expr *len; | |
3021 | match m; | |
e69afb29 | 3022 | bool deferred; |
187de1ed | 3023 | |
6de9cd9a DN |
3024 | len = NULL; |
3025 | seen_length = 0; | |
187de1ed FXC |
3026 | kind = 0; |
3027 | is_iso_c = 0; | |
e69afb29 | 3028 | deferred = false; |
6de9cd9a DN |
3029 | |
3030 | /* Try the old-style specification first. */ | |
3031 | old_char_selector = 0; | |
3032 | ||
2767f2cc | 3033 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3034 | if (m != MATCH_NO) |
3035 | { | |
3036 | if (m == MATCH_YES) | |
3037 | old_char_selector = 1; | |
3038 | seen_length = 1; | |
3039 | goto done; | |
3040 | } | |
3041 | ||
3042 | m = gfc_match_char ('('); | |
3043 | if (m != MATCH_YES) | |
3044 | { | |
a8b3b0b6 | 3045 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3046 | goto done; |
3047 | } | |
3048 | ||
a8b3b0b6 | 3049 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3050 | if (gfc_match (" kind =") == MATCH_YES) |
3051 | { | |
187de1ed | 3052 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3053 | |
6de9cd9a DN |
3054 | if (m == MATCH_ERROR) |
3055 | goto done; | |
3056 | if (m == MATCH_NO) | |
3057 | goto syntax; | |
3058 | ||
3059 | if (gfc_match (" , len =") == MATCH_NO) | |
3060 | goto rparen; | |
3061 | ||
e69afb29 | 3062 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3063 | if (m == MATCH_NO) |
3064 | goto syntax; | |
3065 | if (m == MATCH_ERROR) | |
3066 | goto done; | |
3067 | seen_length = 1; | |
3068 | ||
3069 | goto rparen; | |
3070 | } | |
3071 | ||
66e4ab31 | 3072 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3073 | if (gfc_match (" len =") == MATCH_YES) |
3074 | { | |
e69afb29 | 3075 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3076 | if (m == MATCH_NO) |
3077 | goto syntax; | |
3078 | if (m == MATCH_ERROR) | |
3079 | goto done; | |
3080 | seen_length = 1; | |
3081 | ||
3082 | if (gfc_match_char (')') == MATCH_YES) | |
3083 | goto done; | |
3084 | ||
3085 | if (gfc_match (" , kind =") != MATCH_YES) | |
3086 | goto syntax; | |
3087 | ||
187de1ed FXC |
3088 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3089 | goto done; | |
6de9cd9a DN |
3090 | |
3091 | goto rparen; | |
3092 | } | |
3093 | ||
66e4ab31 | 3094 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3095 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3096 | if (m == MATCH_NO) |
3097 | goto syntax; | |
3098 | if (m == MATCH_ERROR) | |
3099 | goto done; | |
3100 | seen_length = 1; | |
3101 | ||
3102 | m = gfc_match_char (')'); | |
3103 | if (m == MATCH_YES) | |
3104 | goto done; | |
3105 | ||
3106 | if (gfc_match_char (',') != MATCH_YES) | |
3107 | goto syntax; | |
3108 | ||
a8b3b0b6 | 3109 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3110 | |
187de1ed | 3111 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3112 | if (m == MATCH_ERROR) |
3113 | goto done; | |
3114 | if (m == MATCH_NO) | |
3115 | goto syntax; | |
3116 | ||
3117 | rparen: | |
3118 | /* Require a right-paren at this point. */ | |
3119 | m = gfc_match_char (')'); | |
3120 | if (m == MATCH_YES) | |
3121 | goto done; | |
3122 | ||
3123 | syntax: | |
3124 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3125 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3126 | gfc_free_expr (len); |
3127 | return m; | |
6de9cd9a DN |
3128 | |
3129 | done: | |
a99d95a2 PT |
3130 | /* Deal with character functions after USE and IMPORT statements. */ |
3131 | if (gfc_matching_function) | |
1c8bcdf7 | 3132 | { |
a99d95a2 | 3133 | gfc_free_expr (len); |
1c8bcdf7 PT |
3134 | gfc_undo_symbols (); |
3135 | return MATCH_YES; | |
3136 | } | |
3137 | ||
6de9cd9a DN |
3138 | if (m != MATCH_YES) |
3139 | { | |
3140 | gfc_free_expr (len); | |
3141 | return m; | |
3142 | } | |
3143 | ||
3144 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3145 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3146 | |
3147 | if (seen_length == 0) | |
f622221a | 3148 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3149 | else |
00df7c36 SK |
3150 | { |
3151 | /* If gfortran ends up here, then the len may be reducible to a | |
3152 | constant. Try to do that here. If it does not reduce, simply | |
3153 | assign len to the charlen. */ | |
3154 | if (len && len->expr_type != EXPR_CONSTANT) | |
3155 | { | |
3156 | gfc_expr *e; | |
3157 | e = gfc_copy_expr (len); | |
3158 | gfc_reduce_init_expr (e); | |
3159 | if (e->expr_type == EXPR_CONSTANT) | |
3160 | gfc_replace_expr (len, e); | |
3161 | else | |
3162 | gfc_free_expr (e); | |
3163 | cl->length = len; | |
3164 | } | |
3165 | else | |
3166 | cl->length = len; | |
3167 | } | |
6de9cd9a | 3168 | |
bc21d315 | 3169 | ts->u.cl = cl; |
187de1ed | 3170 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3171 | ts->deferred = deferred; |
6de9cd9a | 3172 | |
eea58adb | 3173 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3174 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3175 | if (kind != 0) |
eea58adb | 3176 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3177 | of the named constants from iso_c_binding. */ |
3178 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3179 | else if (len != NULL) |
187de1ed FXC |
3180 | /* Here, we might have parsed something such as: character(c_char) |
3181 | In this case, the parsing code above grabs the c_char when | |
3182 | looking for the length (line 1690, roughly). it's the last | |
3183 | testcase for parsing the kind params of a character variable. | |
3184 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3185 | could be an error. |
187de1ed FXC |
3186 | To see if the user used a C interop kind, test the expr |
3187 | of the so called length, and see if it's C interoperable. */ | |
3188 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3189 | |
6de9cd9a DN |
3190 | return MATCH_YES; |
3191 | } | |
3192 | ||
3193 | ||
f6288c24 FR |
3194 | /* Matches a RECORD declaration. */ |
3195 | ||
3196 | static match | |
e79e6763 | 3197 | match_record_decl (char *name) |
f6288c24 FR |
3198 | { |
3199 | locus old_loc; | |
3200 | old_loc = gfc_current_locus; | |
e79e6763 | 3201 | match m; |
f6288c24 | 3202 | |
e79e6763 FR |
3203 | m = gfc_match (" record /"); |
3204 | if (m == MATCH_YES) | |
f6288c24 | 3205 | { |
f6d17ecd | 3206 | if (!flag_dec_structure) |
f6288c24 FR |
3207 | { |
3208 | gfc_current_locus = old_loc; | |
3209 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3210 | "-fdec-structure"); | |
3211 | return MATCH_ERROR; | |
3212 | } | |
e79e6763 FR |
3213 | m = gfc_match (" %n/", name); |
3214 | if (m == MATCH_YES) | |
3215 | return MATCH_YES; | |
f6288c24 FR |
3216 | } |
3217 | ||
e79e6763 | 3218 | gfc_current_locus = old_loc; |
f6d17ecd | 3219 | if (flag_dec_structure |
e79e6763 FR |
3220 | && (gfc_match (" record% ") == MATCH_YES |
3221 | || gfc_match (" record%t") == MATCH_YES)) | |
3222 | gfc_error ("Structure name expected after RECORD at %C"); | |
3223 | if (m == MATCH_NO) | |
f6288c24 | 3224 | return MATCH_NO; |
e79e6763 FR |
3225 | |
3226 | return MATCH_ERROR; | |
f6288c24 FR |
3227 | } |
3228 | ||
5bab4c96 PT |
3229 | |
3230 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3231 | of expressions to substitute into the possibly parameterized expression | |
3232 | 'e'. Using a list is inefficient but should not be too bad since the | |
3233 | number of type parameters is not likely to be large. */ | |
3234 | static bool | |
3235 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3236 | int* f) | |
3237 | { | |
3238 | gfc_actual_arglist *param; | |
3239 | gfc_expr *copy; | |
3240 | ||
3241 | if (e->expr_type != EXPR_VARIABLE) | |
3242 | return false; | |
3243 | ||
3244 | gcc_assert (e->symtree); | |
3245 | if (e->symtree->n.sym->attr.pdt_kind | |
3246 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3247 | { | |
3248 | for (param = type_param_spec_list; param; param = param->next) | |
3249 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3250 | break; | |
3251 | ||
3252 | if (param) | |
3253 | { | |
3254 | copy = gfc_copy_expr (param->expr); | |
3255 | *e = *copy; | |
3256 | free (copy); | |
3257 | } | |
3258 | } | |
3259 | ||
3260 | return false; | |
3261 | } | |
3262 | ||
3263 | ||
3264 | bool | |
3265 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3266 | { | |
3267 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3268 | } | |
3269 | ||
3270 | ||
3271 | bool | |
3272 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3273 | { | |
3274 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3275 | type_param_spec_list = param_list; | |
3276 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3277 | type_param_spec_list = NULL; | |
3278 | type_param_spec_list = old_param_spec_list; | |
3279 | } | |
3280 | ||
3281 | /* Determines the instance of a parameterized derived type to be used by | |
3282 | matching determining the values of the kind parameters and using them | |
3283 | in the name of the instance. If the instance exists, it is used, otherwise | |
3284 | a new derived type is created. */ | |
3285 | match | |
3286 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3287 | gfc_actual_arglist **ext_param_list) | |
3288 | { | |
3289 | /* The PDT template symbol. */ | |
3290 | gfc_symbol *pdt = *sym; | |
3291 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3292 | gfc_symbol *param; | |
3293 | /* The hoped for instance of the PDT. */ | |
3294 | gfc_symbol *instance; | |
3295 | /* The list of parameters appearing in the PDT declaration. */ | |
3296 | gfc_formal_arglist *type_param_name_list; | |
3297 | /* Used to store the parameter specification list during recursive calls. */ | |
3298 | gfc_actual_arglist *old_param_spec_list; | |
3299 | /* Pointers to the parameter specification being used. */ | |
3300 | gfc_actual_arglist *actual_param; | |
3301 | gfc_actual_arglist *tail = NULL; | |
3302 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3303 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3304 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3305 | ||
3306 | bool name_seen = (param_list == NULL); | |
3307 | bool assumed_seen = false; | |
3308 | bool deferred_seen = false; | |
3309 | bool spec_error = false; | |
3310 | int kind_value, i; | |
3311 | gfc_expr *kind_expr; | |
3312 | gfc_component *c1, *c2; | |
3313 | match m; | |
3314 | ||
3315 | type_param_spec_list = NULL; | |
3316 | ||
3317 | type_param_name_list = pdt->formal; | |
3318 | actual_param = param_list; | |
3319 | sprintf (name, "Pdt%s", pdt->name); | |
3320 | ||
3321 | /* Run through the parameter name list and pick up the actual | |
3322 | parameter values or use the default values in the PDT declaration. */ | |
3323 | for (; type_param_name_list; | |
3324 | type_param_name_list = type_param_name_list->next) | |
3325 | { | |
3326 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3327 | { | |
3328 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3329 | spec_error = deferred_seen; | |
3330 | else | |
3331 | spec_error = assumed_seen; | |
3332 | ||
3333 | if (spec_error) | |
3334 | { | |
3335 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3336 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3337 | goto error_return; |
5bab4c96 PT |
3338 | } |
3339 | } | |
3340 | ||
3341 | if (actual_param && actual_param->name) | |
3342 | name_seen = true; | |
3343 | param = type_param_name_list->sym; | |
3344 | ||
276515e6 PT |
3345 | if (!param || !param->name) |
3346 | continue; | |
3347 | ||
18a4e7e3 | 3348 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3349 | /* An error should already have been thrown in resolve.c |
3350 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3351 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3352 | goto error_return; |
18a4e7e3 | 3353 | |
5bab4c96 PT |
3354 | kind_expr = NULL; |
3355 | if (!name_seen) | |
3356 | { | |
18a4e7e3 PT |
3357 | if (!actual_param && !(c1 && c1->initializer)) |
3358 | { | |
3359 | gfc_error ("The type parameter spec list at %C does not contain " | |
3360 | "enough parameter expressions"); | |
3361 | goto error_return; | |
3362 | } | |
3363 | else if (!actual_param && c1 && c1->initializer) | |
3364 | kind_expr = gfc_copy_expr (c1->initializer); | |
3365 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3366 | kind_expr = gfc_copy_expr (actual_param->expr); |
3367 | } | |
3368 | else | |
3369 | { | |
3370 | actual_param = param_list; | |
3371 | for (;actual_param; actual_param = actual_param->next) | |
3372 | if (actual_param->name | |
3373 | && strcmp (actual_param->name, param->name) == 0) | |
3374 | break; | |
3375 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3376 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3377 | else | |
3378 | { | |
62d3c075 PT |
3379 | if (c1->initializer) |
3380 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3381 | else if (!(actual_param && param->attr.pdt_len)) |
3382 | { | |
71a21b9e | 3383 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3384 | "have a default value", param->name); |
18a4e7e3 | 3385 | goto error_return; |
5bab4c96 PT |
3386 | } |
3387 | } | |
3388 | } | |
3389 | ||
3390 | /* Store the current parameter expressions in a temporary actual | |
3391 | arglist 'list' so that they can be substituted in the corresponding | |
3392 | expressions in the PDT instance. */ | |
3393 | if (type_param_spec_list == NULL) | |
3394 | { | |
3395 | type_param_spec_list = gfc_get_actual_arglist (); | |
3396 | tail = type_param_spec_list; | |
3397 | } | |
3398 | else | |
3399 | { | |
3400 | tail->next = gfc_get_actual_arglist (); | |
3401 | tail = tail->next; | |
3402 | } | |
3403 | tail->name = param->name; | |
3404 | ||
3405 | if (kind_expr) | |
3406 | { | |
87f3a5cf PT |
3407 | /* Try simplification even for LEN expressions. */ |
3408 | gfc_resolve_expr (kind_expr); | |
3409 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3410 | /* Variable expressions seem to default to BT_PROCEDURE. |
3411 | TODO find out why this is and fix it. */ | |
3412 | if (kind_expr->ts.type != BT_INTEGER | |
3413 | && kind_expr->ts.type != BT_PROCEDURE) | |
3414 | { | |
3415 | gfc_error ("The parameter expression at %C must be of " | |
3416 | "INTEGER type and not %s type", | |
3417 | gfc_basic_typename (kind_expr->ts.type)); | |
3418 | goto error_return; | |
3419 | } | |
3420 | ||
5bab4c96 | 3421 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3422 | } |
3423 | ||
3424 | if (actual_param) | |
3425 | tail->spec_type = actual_param->spec_type; | |
3426 | ||
3427 | if (!param->attr.pdt_kind) | |
3428 | { | |
18a4e7e3 | 3429 | if (!name_seen && actual_param) |
5bab4c96 PT |
3430 | actual_param = actual_param->next; |
3431 | if (kind_expr) | |
3432 | { | |
3433 | gfc_free_expr (kind_expr); | |
3434 | kind_expr = NULL; | |
3435 | } | |
3436 | continue; | |
3437 | } | |
3438 | ||
3439 | if (actual_param | |
3440 | && (actual_param->spec_type == SPEC_ASSUMED | |
3441 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3442 | { | |
71a21b9e | 3443 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3444 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3445 | goto error_return; |
5bab4c96 PT |
3446 | } |
3447 | ||
3448 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3449 | { | |
71a21b9e | 3450 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3451 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3452 | goto error_return; |
5bab4c96 PT |
3453 | } |
3454 | ||
3455 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3456 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3457 | |
3458 | if (!name_seen && actual_param) | |
3459 | actual_param = actual_param->next; | |
3460 | gfc_free_expr (kind_expr); | |
3461 | } | |
3462 | ||
18a4e7e3 PT |
3463 | if (!name_seen && actual_param) |
3464 | { | |
3465 | gfc_error ("The type parameter spec list at %C contains too many " | |
3466 | "parameter expressions"); | |
3467 | goto error_return; | |
3468 | } | |
3469 | ||
5bab4c96 PT |
3470 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3471 | build it, using 'pdt' as a template. */ | |
3472 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3473 | { | |
3474 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3475 | goto error_return; |
5bab4c96 PT |
3476 | } |
3477 | ||
3478 | m = MATCH_YES; | |
3479 | ||
3480 | if (instance->attr.flavor == FL_DERIVED | |
3481 | && instance->attr.pdt_type) | |
3482 | { | |
3483 | instance->refs++; | |
3484 | if (ext_param_list) | |
3485 | *ext_param_list = type_param_spec_list; | |
3486 | *sym = instance; | |
3487 | gfc_commit_symbols (); | |
3488 | return m; | |
3489 | } | |
3490 | ||
3491 | /* Start building the new instance of the parameterized type. */ | |
3492 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3493 | instance->attr.pdt_template = 0; | |
3494 | instance->attr.pdt_type = 1; | |
3495 | instance->declared_at = gfc_current_locus; | |
3496 | ||
3497 | /* Add the components, replacing the parameters in all expressions | |
3498 | with the expressions for their values in 'type_param_spec_list'. */ | |
3499 | c1 = pdt->components; | |
3500 | tail = type_param_spec_list; | |
3501 | for (; c1; c1 = c1->next) | |
3502 | { | |
3503 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3504 | |
5bab4c96 PT |
3505 | c2->ts = c1->ts; |
3506 | c2->attr = c1->attr; | |
3507 | ||
276515e6 PT |
3508 | /* The order of declaration of the type_specs might not be the |
3509 | same as that of the components. */ | |
3510 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3511 | { | |
3512 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3513 | if (strcmp (c1->name, tail->name) == 0) | |
3514 | break; | |
3515 | } | |
3516 | ||
5bab4c96 PT |
3517 | /* Deal with type extension by recursively calling this function |
3518 | to obtain the instance of the extended type. */ | |
3519 | if (gfc_current_state () != COMP_DERIVED | |
3520 | && c1 == pdt->components | |
3521 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3522 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3523 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3524 | { | |
3525 | gfc_formal_arglist *f; | |
3526 | ||
3527 | old_param_spec_list = type_param_spec_list; | |
3528 | ||
3529 | /* Obtain a spec list appropriate to the extended type..*/ | |
3530 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3531 | type_param_spec_list = actual_param; | |
3532 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3533 | actual_param = actual_param->next; | |
3534 | if (actual_param) | |
3535 | { | |
3536 | gfc_free_actual_arglist (actual_param->next); | |
3537 | actual_param->next = NULL; | |
3538 | } | |
3539 | ||
3540 | /* Now obtain the PDT instance for the extended type. */ | |
3541 | c2->param_list = type_param_spec_list; | |
3542 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3543 | NULL); | |
3544 | type_param_spec_list = old_param_spec_list; | |
3545 | ||
3546 | c2->ts.u.derived->refs++; | |
3547 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3548 | ||
3549 | /* Set extension level. */ | |
3550 | if (c2->ts.u.derived->attr.extension == 255) | |
3551 | { | |
3552 | /* Since the extension field is 8 bit wide, we can only have | |
3553 | up to 255 extension levels. */ | |
3554 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3555 | c2->ts.u.derived->name, | |
3556 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3557 | goto error_return; |
5bab4c96 PT |
3558 | } |
3559 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3560 | ||
5bab4c96 PT |
3561 | continue; |
3562 | } | |
3563 | ||
3564 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3565 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3566 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3567 | { |
3568 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3569 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3570 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3571 | gfc_extract_int (e, &c2->ts.kind); |
3572 | gfc_free_expr (e); | |
18a4e7e3 PT |
3573 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3574 | { | |
3575 | gfc_error ("Kind %d not supported for type %s at %C", | |
3576 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3577 | goto error_return; | |
3578 | } | |
5bab4c96 PT |
3579 | } |
3580 | ||
3581 | /* Similarly, set the string length if parameterized. */ | |
3582 | if (c1->ts.type == BT_CHARACTER | |
3583 | && c1->ts.u.cl->length | |
3584 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3585 | { | |
3586 | gfc_expr *e; | |
3587 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3588 | gfc_insert_kind_parameter_exprs (e); | |
3589 | gfc_simplify_expr (e, 1); | |
3590 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3591 | c2->ts.u.cl->length = e; | |
3592 | c2->attr.pdt_string = 1; | |
3593 | } | |
3594 | ||
3595 | /* Set up either the KIND/LEN initializer, if constant, | |
3596 | or the parameterized expression. Use the template | |
3597 | initializer if one is not already set in this instance. */ | |
3598 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3599 | { | |
3600 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3601 | c2->initializer = gfc_copy_expr (tail->expr); | |
3602 | else if (tail && tail->expr) | |
3603 | { | |
3604 | c2->param_list = gfc_get_actual_arglist (); | |
3605 | c2->param_list->name = tail->name; | |
3606 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3607 | c2->param_list->next = NULL; | |
3608 | } | |
3609 | ||
3610 | if (!c2->initializer && c1->initializer) | |
3611 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3612 | } |
3613 | ||
3614 | /* Copy the array spec. */ | |
3615 | c2->as = gfc_copy_array_spec (c1->as); | |
3616 | if (c1->ts.type == BT_CLASS) | |
3617 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3618 | ||
3619 | /* Determine if an array spec is parameterized. If so, substitute | |
3620 | in the parameter expressions for the bounds and set the pdt_array | |
3621 | attribute. Notice that this attribute must be unconditionally set | |
3622 | if this is an array of parameterized character length. */ | |
3623 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3624 | { | |
3625 | bool pdt_array = false; | |
3626 | ||
3627 | /* Are the bounds of the array parameterized? */ | |
3628 | for (i = 0; i < c1->as->rank; i++) | |
3629 | { | |
3630 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3631 | pdt_array = true; | |
3632 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3633 | pdt_array = true; | |
3634 | } | |
3635 | ||
3636 | /* If they are, free the expressions for the bounds and | |
3637 | replace them with the template expressions with substitute | |
3638 | values. */ | |
3639 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3640 | { | |
3641 | gfc_expr *e; | |
3642 | e = gfc_copy_expr (c1->as->lower[i]); | |
3643 | gfc_insert_kind_parameter_exprs (e); | |
3644 | gfc_simplify_expr (e, 1); | |
3645 | gfc_free_expr (c2->as->lower[i]); | |
3646 | c2->as->lower[i] = e; | |
3647 | e = gfc_copy_expr (c1->as->upper[i]); | |
3648 | gfc_insert_kind_parameter_exprs (e); | |
3649 | gfc_simplify_expr (e, 1); | |
3650 | gfc_free_expr (c2->as->upper[i]); | |
3651 | c2->as->upper[i] = e; | |
3652 | } | |
3653 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3654 | if (c1->initializer) |
3655 | { | |
3656 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3657 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3658 | gfc_simplify_expr (c2->initializer, 1); | |
3659 | } | |
5bab4c96 PT |
3660 | } |
3661 | ||
3662 | /* Recurse into this function for PDT components. */ | |
3663 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3664 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3665 | { | |
3666 | gfc_actual_arglist *params; | |
3667 | /* The component in the template has a list of specification | |
3668 | expressions derived from its declaration. */ | |
3669 | params = gfc_copy_actual_arglist (c1->param_list); | |
3670 | actual_param = params; | |
3671 | /* Substitute the template parameters with the expressions | |
3672 | from the specification list. */ | |
3673 | for (;actual_param; actual_param = actual_param->next) | |
3674 | gfc_insert_parameter_exprs (actual_param->expr, | |
3675 | type_param_spec_list); | |
3676 | ||
3677 | /* Now obtain the PDT instance for the component. */ | |
3678 | old_param_spec_list = type_param_spec_list; | |
3679 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3680 | type_param_spec_list = old_param_spec_list; | |
3681 | ||
3682 | c2->param_list = params; | |
2fcd5884 PT |
3683 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3684 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3685 | ||
3686 | if (c2->attr.allocatable) | |
3687 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3688 | } |
3689 | } | |
3690 | ||
3691 | gfc_commit_symbol (instance); | |
3692 | if (ext_param_list) | |
3693 | *ext_param_list = type_param_spec_list; | |
3694 | *sym = instance; | |
3695 | return m; | |
18a4e7e3 PT |
3696 | |
3697 | error_return: | |
3698 | gfc_free_actual_arglist (type_param_spec_list); | |
3699 | return MATCH_ERROR; | |
5bab4c96 PT |
3700 | } |
3701 | ||
3702 | ||
e74f1cc8 JW |
3703 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3704 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3705 | IMPLICIT statements. |
3706 | ||
d51347f9 | 3707 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3708 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3709 | statement correctly. */ |
3710 | ||
e2d29968 | 3711 | match |
e74f1cc8 | 3712 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3713 | { |
3714 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3715 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3716 | match m; |
8fc541d3 | 3717 | char c; |
0fb56814 | 3718 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3719 | const char *dt_name; |
6de9cd9a | 3720 | |
5bab4c96 PT |
3721 | decl_type_param_list = NULL; |
3722 | ||
1c8bcdf7 PT |
3723 | /* A belt and braces check that the typespec is correctly being treated |
3724 | as a deferred characteristic association. */ | |
3725 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
3726 | && (gfc_current_block ()->result->ts.kind == -1) |
3727 | && (ts->kind == -1); | |
6de9cd9a | 3728 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
3729 | if (seen_deferred_kind) |
3730 | ts->kind = -1; | |
6de9cd9a | 3731 | |
a8b3b0b6 | 3732 | /* Clear the current binding label, in case one is given. */ |
62603fae | 3733 | curr_binding_label = NULL; |
a8b3b0b6 | 3734 | |
5f700e6d AL |
3735 | if (gfc_match (" byte") == MATCH_YES) |
3736 | { | |
524af0d6 | 3737 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
3738 | return MATCH_ERROR; |
3739 | ||
3740 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3741 | { | |
3742 | gfc_error ("BYTE type used at %C " | |
3743 | "is not available on the target machine"); | |
3744 | return MATCH_ERROR; | |
3745 | } | |
d51347f9 | 3746 | |
5f700e6d AL |
3747 | ts->type = BT_INTEGER; |
3748 | ts->kind = 1; | |
3749 | return MATCH_YES; | |
3750 | } | |
3751 | ||
0fb56814 | 3752 | |
45a69325 | 3753 | m = gfc_match (" type ("); |
0fb56814 | 3754 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3755 | if (matched_type) |
3756 | { | |
3757 | gfc_gobble_whitespace (); | |
3758 | if (gfc_peek_ascii_char () == '*') | |
3759 | { | |
3760 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3761 | return m; | |
f6288c24 | 3762 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3763 | { |
3764 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3765 | return MATCH_ERROR; | |
3766 | } | |
524af0d6 JB |
3767 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
3768 | "at %C")) | |
45a69325 TB |
3769 | return MATCH_ERROR; |
3770 | ts->type = BT_ASSUMED; | |
3771 | return MATCH_YES; | |
3772 | } | |
3773 | ||
3774 | m = gfc_match ("%n", name); | |
3775 | matched_type = (m == MATCH_YES); | |
3776 | } | |
3777 | ||
0fb56814 TB |
3778 | if ((matched_type && strcmp ("integer", name) == 0) |
3779 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3780 | { |
3781 | ts->type = BT_INTEGER; | |
9d64df18 | 3782 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3783 | goto get_kind; |
3784 | } | |
3785 | ||
0fb56814 TB |
3786 | if ((matched_type && strcmp ("character", name) == 0) |
3787 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 3788 | { |
0fb56814 | 3789 | if (matched_type |
524af0d6 JB |
3790 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3791 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3792 | return MATCH_ERROR; |
3793 | ||
6de9cd9a | 3794 | ts->type = BT_CHARACTER; |
e5ddaa24 | 3795 | if (implicit_flag == 0) |
0fb56814 | 3796 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 3797 | else |
0fb56814 TB |
3798 | m = MATCH_YES; |
3799 | ||
3800 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3801 | m = MATCH_ERROR; | |
3802 | ||
3803 | return m; | |
6de9cd9a DN |
3804 | } |
3805 | ||
0fb56814 TB |
3806 | if ((matched_type && strcmp ("real", name) == 0) |
3807 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
3808 | { |
3809 | ts->type = BT_REAL; | |
9d64df18 | 3810 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
3811 | goto get_kind; |
3812 | } | |
3813 | ||
0fb56814 TB |
3814 | if ((matched_type |
3815 | && (strcmp ("doubleprecision", name) == 0 | |
3816 | || (strcmp ("double", name) == 0 | |
3817 | && gfc_match (" precision") == MATCH_YES))) | |
3818 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 3819 | { |
0fb56814 | 3820 | if (matched_type |
524af0d6 JB |
3821 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3822 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3823 | return MATCH_ERROR; |
3824 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3825 | return MATCH_ERROR; | |
3826 | ||
6de9cd9a | 3827 | ts->type = BT_REAL; |
9d64df18 | 3828 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3829 | return MATCH_YES; |
3830 | } | |
3831 | ||
0fb56814 TB |
3832 | if ((matched_type && strcmp ("complex", name) == 0) |
3833 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
3834 | { |
3835 | ts->type = BT_COMPLEX; | |
9d64df18 | 3836 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
3837 | goto get_kind; |
3838 | } | |
3839 | ||
0fb56814 TB |
3840 | if ((matched_type |
3841 | && (strcmp ("doublecomplex", name) == 0 | |
3842 | || (strcmp ("double", name) == 0 | |
3843 | && gfc_match (" complex") == MATCH_YES))) | |
3844 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 3845 | { |
524af0d6 | 3846 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
3847 | return MATCH_ERROR; |
3848 | ||
3849 | if (matched_type | |
524af0d6 JB |
3850 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3851 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3852 | return MATCH_ERROR; |
3853 | ||
3854 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
3855 | return MATCH_ERROR; |
3856 | ||
6de9cd9a | 3857 | ts->type = BT_COMPLEX; |
9d64df18 | 3858 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3859 | return MATCH_YES; |
3860 | } | |
3861 | ||
0fb56814 TB |
3862 | if ((matched_type && strcmp ("logical", name) == 0) |
3863 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
3864 | { |
3865 | ts->type = BT_LOGICAL; | |
9d64df18 | 3866 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
3867 | goto get_kind; |
3868 | } | |
3869 | ||
0fb56814 | 3870 | if (matched_type) |
5bab4c96 PT |
3871 | { |
3872 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
3873 | if (m == MATCH_ERROR) | |
3874 | return m; | |
3875 | ||
0fb56814 | 3876 | m = gfc_match_char (')'); |
5bab4c96 | 3877 | } |
0fb56814 | 3878 | |
f6288c24 FR |
3879 | if (m != MATCH_YES) |
3880 | m = match_record_decl (name); | |
3881 | ||
3882 | if (matched_type || m == MATCH_YES) | |
3883 | { | |
3884 | ts->type = BT_DERIVED; | |
3885 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3886 | * don't need all the extra derived-type stuff for structures. */ | |
3887 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
3888 | { | |
2f029c08 | 3889 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
3890 | return MATCH_ERROR; |
3891 | } | |
5bab4c96 PT |
3892 | |
3893 | if (sym && sym->attr.flavor == FL_DERIVED | |
3894 | && sym->attr.pdt_template | |
3895 | && gfc_current_state () != COMP_DERIVED) | |
3896 | { | |
3897 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
3898 | if (m != MATCH_YES) | |
3899 | return m; | |
3900 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
3901 | ts->u.derived = sym; | |
3902 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
3903 | } | |
3904 | ||
f6288c24 FR |
3905 | if (sym && sym->attr.flavor == FL_STRUCT) |
3906 | { | |
3907 | ts->u.derived = sym; | |
3908 | return MATCH_YES; | |
3909 | } | |
3910 | /* Actually a derived type. */ | |
3911 | } | |
3912 | ||
cf2b3c22 | 3913 | else |
727e8544 | 3914 | { |
f6288c24 | 3915 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 3916 | structure declaration. */ |
f6d17ecd | 3917 | if (flag_dec_structure |
e79e6763 FR |
3918 | && (gfc_current_state () == COMP_STRUCTURE |
3919 | || gfc_current_state () == COMP_MAP)) | |
3920 | { | |
3921 | m = gfc_match (" structure"); | |
3922 | if (m == MATCH_YES) | |
3923 | { | |
3924 | m = gfc_match_structure_decl (); | |
3925 | if (m == MATCH_YES) | |
3926 | { | |
3927 | /* gfc_new_block is updated by match_structure_decl. */ | |
3928 | ts->type = BT_DERIVED; | |
3929 | ts->u.derived = gfc_new_block; | |
3930 | return MATCH_YES; | |
3931 | } | |
3932 | } | |
3933 | if (m == MATCH_ERROR) | |
3934 | return MATCH_ERROR; | |
3935 | } | |
f6288c24 | 3936 | |
528622fd JW |
3937 | /* Match CLASS declarations. */ |
3938 | m = gfc_match (" class ( * )"); | |
3939 | if (m == MATCH_ERROR) | |
3940 | return MATCH_ERROR; | |
3941 | else if (m == MATCH_YES) | |
3942 | { | |
8b704316 PT |
3943 | gfc_symbol *upe; |
3944 | gfc_symtree *st; | |
3945 | ts->type = BT_CLASS; | |
f5acf0f2 | 3946 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
3947 | if (upe == NULL) |
3948 | { | |
f5acf0f2 PT |
3949 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
3950 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
3951 | st->n.sym = upe; |
3952 | gfc_set_sym_referenced (upe); | |
3953 | upe->refs++; | |
3954 | upe->ts.type = BT_VOID; | |
3955 | upe->attr.unlimited_polymorphic = 1; | |
3956 | /* This is essential to force the construction of | |
3957 | unlimited polymorphic component class containers. */ | |
3958 | upe->attr.zero_comp = 1; | |
70112e2a | 3959 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 3960 | &gfc_current_locus)) |
b93d8a3f JW |
3961 | return MATCH_ERROR; |
3962 | } | |
8b704316 PT |
3963 | else |
3964 | { | |
b93d8a3f | 3965 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
3966 | st->n.sym = upe; |
3967 | upe->refs++; | |
3968 | } | |
3969 | ts->u.derived = upe; | |
3970 | return m; | |
3971 | } | |
528622fd | 3972 | |
5bab4c96 PT |
3973 | m = gfc_match (" class ("); |
3974 | ||
3975 | if (m == MATCH_YES) | |
3976 | m = gfc_match ("%n", name); | |
3977 | else | |
3978 | return m; | |
3979 | ||
727e8544 JW |
3980 | if (m != MATCH_YES) |
3981 | return m; | |
cf2b3c22 | 3982 | ts->type = BT_CLASS; |
727e8544 | 3983 | |
524af0d6 | 3984 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 3985 | return MATCH_ERROR; |
5bab4c96 PT |
3986 | |
3987 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
3988 | if (m == MATCH_ERROR) | |
3989 | return m; | |
3990 | ||
3991 | m = gfc_match_char (')'); | |
3992 | if (m != MATCH_YES) | |
3993 | return m; | |
727e8544 | 3994 | } |
6de9cd9a | 3995 | |
1c8bcdf7 PT |
3996 | /* Defer association of the derived type until the end of the |
3997 | specification block. However, if the derived type can be | |
f5acf0f2 | 3998 | found, add it to the typespec. */ |
1c8bcdf7 | 3999 | if (gfc_matching_function) |
e2d29968 | 4000 | { |
bc21d315 | 4001 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4002 | if (gfc_current_state () != COMP_INTERFACE |
4003 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4004 | { |
4005 | sym = gfc_find_dt_in_generic (sym); | |
4006 | ts->u.derived = sym; | |
4007 | } | |
e2d29968 PT |
4008 | return MATCH_YES; |
4009 | } | |
4010 | ||
4011 | /* Search for the name but allow the components to be defined later. If | |
4012 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4013 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4014 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4015 | symtree with the all lower-case name contains the associated |
4016 | generic function. */ | |
f6288c24 | 4017 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4018 | sym = NULL; |
c3f34952 TB |
4019 | dt_sym = NULL; |
4020 | if (ts->kind != -1) | |
6de9cd9a | 4021 | { |
c3f34952 TB |
4022 | gfc_get_ha_symbol (name, &sym); |
4023 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4024 | { | |
c4100eae | 4025 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4026 | return MATCH_ERROR; |
4027 | } | |
4028 | if (sym->generic && !dt_sym) | |
4029 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4030 | |
4031 | /* Host associated PDTs can get confused with their constructors | |
4032 | because they ar instantiated in the template's namespace. */ | |
4033 | if (!dt_sym) | |
4034 | { | |
4035 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4036 | { | |
4037 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4038 | return MATCH_ERROR; | |
4039 | } | |
4040 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4041 | dt_sym = NULL; | |
4042 | } | |
6de9cd9a | 4043 | } |
e2d29968 PT |
4044 | else if (ts->kind == -1) |
4045 | { | |
1c8bcdf7 PT |
4046 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4047 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4048 | gfc_find_symbol (name, NULL, iface, &sym); |
4049 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4050 | { |
c4100eae | 4051 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4052 | return MATCH_ERROR; |
4053 | } | |
c3f34952 TB |
4054 | if (sym && sym->generic && !dt_sym) |
4055 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4056 | |
1c8bcdf7 | 4057 | ts->kind = 0; |
e2d29968 PT |
4058 | if (sym == NULL) |
4059 | return MATCH_NO; | |
4060 | } | |
6de9cd9a | 4061 | |
f6288c24 | 4062 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4063 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4064 | || sym->attr.subroutine) | |
4065 | { | |
fea70c99 MLI |
4066 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4067 | "entity at %L, which has the same name", name, | |
4068 | &sym->declared_at); | |
c3f34952 TB |
4069 | return MATCH_ERROR; |
4070 | } | |
6de9cd9a | 4071 | |
5bab4c96 PT |
4072 | if (sym && sym->attr.flavor == FL_DERIVED |
4073 | && sym->attr.pdt_template | |
4074 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4075 | { |
4076 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4077 | if (m != MATCH_YES) | |
4078 | return m; | |
4079 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4080 | ts->u.derived = sym; | |
4081 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4082 | } | |
5bab4c96 | 4083 | |
44c57c2f | 4084 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4085 | gfc_set_sym_referenced (sym); |
c3f34952 | 4086 | if (!sym->attr.generic |
524af0d6 | 4087 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4088 | return MATCH_ERROR; |
4089 | ||
4090 | if (!sym->attr.function | |
524af0d6 | 4091 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4092 | return MATCH_ERROR; |
4093 | ||
5bab4c96 PT |
4094 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4095 | && dt_sym->attr.pdt_template | |
4096 | && gfc_current_state () != COMP_DERIVED) | |
4097 | { | |
4098 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4099 | if (m != MATCH_YES) | |
4100 | return m; | |
4101 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4102 | } | |
4103 | ||
c3f34952 TB |
4104 | if (!dt_sym) |
4105 | { | |
4106 | gfc_interface *intr, *head; | |
4107 | ||
4108 | /* Use upper case to save the actual derived-type symbol. */ | |
4109 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4110 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4111 | head = sym->generic; |
4112 | intr = gfc_get_interface (); | |
4113 | intr->sym = dt_sym; | |
4114 | intr->where = gfc_current_locus; | |
4115 | intr->next = head; | |
4116 | sym->generic = intr; | |
4117 | sym->attr.if_source = IFSRC_DECL; | |
4118 | } | |
44c57c2f MM |
4119 | else |
4120 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4121 | |
4122 | gfc_set_sym_referenced (dt_sym); | |
4123 | ||
f6288c24 | 4124 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4125 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4126 | return MATCH_ERROR; |
4127 | ||
4128 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4129 | |
4130 | return MATCH_YES; | |
4131 | ||
4132 | get_kind: | |
0fb56814 | 4133 | if (matched_type |
524af0d6 JB |
4134 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4135 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4136 | return MATCH_ERROR; |
4137 | ||
6de9cd9a DN |
4138 | /* For all types except double, derived and character, look for an |
4139 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4140 | if (implicit_flag == 1) |
0fb56814 TB |
4141 | { |
4142 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4143 | return MATCH_ERROR; | |
4144 | ||
4145 | return MATCH_YES; | |
4146 | } | |
6de9cd9a | 4147 | |
0ff0dfbf TS |
4148 | if (gfc_current_form == FORM_FREE) |
4149 | { | |
0b3624f6 SK |
4150 | c = gfc_peek_ascii_char (); |
4151 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4152 | && c != ':' && c != ',') |
0fb56814 TB |
4153 | { |
4154 | if (matched_type && c == ')') | |
4155 | { | |
4156 | gfc_next_ascii_char (); | |
4157 | return MATCH_YES; | |
4158 | } | |
4159 | return MATCH_NO; | |
4160 | } | |
0ff0dfbf TS |
4161 | } |
4162 | ||
e2d29968 | 4163 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4164 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4165 | { |
4166 | m = gfc_match_old_kind_spec (ts); | |
4167 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4168 | return MATCH_ERROR; | |
4169 | } | |
6de9cd9a | 4170 | |
0fb56814 TB |
4171 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4172 | return MATCH_ERROR; | |
4173 | ||
1c8bcdf7 PT |
4174 | /* Defer association of the KIND expression of function results |
4175 | until after USE and IMPORT statements. */ | |
4176 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4177 | || gfc_matching_function) | |
4178 | return MATCH_YES; | |
4179 | ||
6de9cd9a DN |
4180 | if (m == MATCH_NO) |
4181 | m = MATCH_YES; /* No kind specifier found. */ | |
4182 | ||
4183 | return m; | |
4184 | } | |
4185 | ||
4186 | ||
e5ddaa24 TS |
4187 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4188 | already matched in parse.c, or we would not end up here in the | |
4189 | first place. So the only thing we need to check, is if there is | |
4190 | trailing garbage. If not, the match is successful. */ | |
4191 | ||
4192 | match | |
4193 | gfc_match_implicit_none (void) | |
4194 | { | |
8b7a967e TB |
4195 | char c; |
4196 | match m; | |
4197 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4198 | bool type = false; | |
4199 | bool external = false; | |
a6c63173 TB |
4200 | locus cur_loc = gfc_current_locus; |
4201 | ||
4202 | if (gfc_current_ns->seen_implicit_none | |
4203 | || gfc_current_ns->has_implicit_none_export) | |
4204 | { | |
4205 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4206 | return MATCH_ERROR; | |
4207 | } | |
8b7a967e TB |
4208 | |
4209 | gfc_gobble_whitespace (); | |
4210 | c = gfc_peek_ascii_char (); | |
4211 | if (c == '(') | |
4212 | { | |
4213 | (void) gfc_next_ascii_char (); | |
8179b067 | 4214 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4215 | return MATCH_ERROR; |
a6c63173 TB |
4216 | |
4217 | gfc_gobble_whitespace (); | |
4218 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4219 | { |
a6c63173 TB |
4220 | (void) gfc_next_ascii_char (); |
4221 | type = true; | |
4222 | } | |
4223 | else | |
4224 | for(;;) | |
4225 | { | |
4226 | m = gfc_match (" %n", name); | |
4227 | if (m != MATCH_YES) | |
4228 | return MATCH_ERROR; | |
8b7a967e | 4229 | |
a6c63173 TB |
4230 | if (strcmp (name, "type") == 0) |
4231 | type = true; | |
4232 | else if (strcmp (name, "external") == 0) | |
4233 | external = true; | |
4234 | else | |
4235 | return MATCH_ERROR; | |
8b7a967e | 4236 | |
a6c63173 TB |
4237 | gfc_gobble_whitespace (); |
4238 | c = gfc_next_ascii_char (); | |
4239 | if (c == ',') | |
4240 | continue; | |
4241 | if (c == ')') | |
4242 | break; | |
4243 | return MATCH_ERROR; | |
4244 | } | |
8b7a967e TB |
4245 | } |
4246 | else | |
4247 | type = true; | |
4248 | ||
4249 | if (gfc_match_eos () != MATCH_YES) | |
4250 | return MATCH_ERROR; | |
4251 | ||
a6c63173 | 4252 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4253 | |
4254 | return MATCH_YES; | |
e5ddaa24 TS |
4255 | } |
4256 | ||
4257 | ||
4258 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4259 | ||
4260 | static match | |
1107b970 | 4261 | match_implicit_range (void) |
e5ddaa24 | 4262 | { |
8fc541d3 FXC |
4263 | char c, c1, c2; |
4264 | int inner; | |
e5ddaa24 TS |
4265 | locus cur_loc; |
4266 | ||
4267 | cur_loc = gfc_current_locus; | |
4268 | ||
4269 | gfc_gobble_whitespace (); | |
8fc541d3 | 4270 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4271 | if (c != '(') |
4272 | { | |
4273 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4274 | goto bad; | |
4275 | } | |
4276 | ||
4277 | inner = 1; | |
4278 | while (inner) | |
4279 | { | |
4280 | gfc_gobble_whitespace (); | |
8fc541d3 | 4281 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4282 | if (!ISALPHA (c1)) |
4283 | goto bad; | |
4284 | ||
4285 | gfc_gobble_whitespace (); | |
8fc541d3 | 4286 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4287 | |
4288 | switch (c) | |
4289 | { | |
4290 | case ')': | |
66e4ab31 | 4291 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4292 | |
4293 | case ',': | |
4294 | c2 = c1; | |
4295 | break; | |
4296 | ||
4297 | case '-': | |
4298 | gfc_gobble_whitespace (); | |
8fc541d3 | 4299 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4300 | if (!ISALPHA (c2)) |
4301 | goto bad; | |
4302 | ||
4303 | gfc_gobble_whitespace (); | |
8fc541d3 | 4304 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4305 | |
4306 | if ((c != ',') && (c != ')')) | |
4307 | goto bad; | |
4308 | if (c == ')') | |
4309 | inner = 0; | |
4310 | ||
4311 | break; | |
4312 | ||
4313 | default: | |
4314 | goto bad; | |
4315 | } | |
4316 | ||
4317 | if (c1 > c2) | |
4318 | { | |
4319 | gfc_error ("Letters must be in alphabetic order in " | |
4320 | "IMPLICIT statement at %C"); | |
4321 | goto bad; | |
4322 | } | |
4323 | ||
4324 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4325 | implicits from this IMPLICIT statement. We do not check for |
4326 | conflicts with whatever earlier IMPLICIT statements may have | |
4327 | set. This is done when we've successfully finished matching | |
4328 | the current one. */ | |
524af0d6 | 4329 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4330 | goto bad; |
4331 | } | |
4332 | ||
4333 | return MATCH_YES; | |
4334 | ||
4335 | bad: | |
4336 | gfc_syntax_error (ST_IMPLICIT); | |
4337 | ||
4338 | gfc_current_locus = cur_loc; | |
4339 | return MATCH_ERROR; | |
4340 | } | |
4341 | ||
4342 | ||
4343 | /* Match an IMPLICIT statement, storing the types for | |
4344 | gfc_set_implicit() if the statement is accepted by the parser. | |
4345 | There is a strange looking, but legal syntactic construction | |
4346 | possible. It looks like: | |
4347 | ||
4348 | IMPLICIT INTEGER (a-b) (c-d) | |
4349 | ||
4350 | This is legal if "a-b" is a constant expression that happens to | |
4351 | equal one of the legal kinds for integers. The real problem | |
4352 | happens with an implicit specification that looks like: | |
4353 | ||
4354 | IMPLICIT INTEGER (a-b) | |
4355 | ||
4356 | In this case, a typespec matcher that is "greedy" (as most of the | |
4357 | matchers are) gobbles the character range as a kindspec, leaving | |
4358 | nothing left. We therefore have to go a bit more slowly in the | |
4359 | matching process by inhibiting the kindspec checking during | |
4360 | typespec matching and checking for a kind later. */ | |
4361 | ||
4362 | match | |
4363 | gfc_match_implicit (void) | |
4364 | { | |
4365 | gfc_typespec ts; | |
4366 | locus cur_loc; | |
8fc541d3 | 4367 | char c; |
e5ddaa24 TS |
4368 | match m; |
4369 | ||
8b7a967e TB |
4370 | if (gfc_current_ns->seen_implicit_none) |
4371 | { | |
4372 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4373 | "statement"); | |
4374 | return MATCH_ERROR; | |
4375 | } | |
4376 | ||
44000dbb JD |
4377 | gfc_clear_ts (&ts); |
4378 | ||
e5ddaa24 TS |
4379 | /* We don't allow empty implicit statements. */ |
4380 | if (gfc_match_eos () == MATCH_YES) | |
4381 | { | |
4382 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4383 | return MATCH_ERROR; | |
4384 | } | |
4385 | ||
e5ddaa24 TS |
4386 | do |
4387 | { | |
1107b970 PB |
4388 | /* First cleanup. */ |
4389 | gfc_clear_new_implicit (); | |
4390 | ||
e5ddaa24 | 4391 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4392 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4393 | if (m == MATCH_ERROR) |
4394 | goto error; | |
4395 | if (m == MATCH_NO) | |
4396 | goto syntax; | |
4397 | ||
4398 | cur_loc = gfc_current_locus; | |
1107b970 | 4399 | m = match_implicit_range (); |
e5ddaa24 TS |
4400 | |
4401 | if (m == MATCH_YES) | |
4402 | { | |
1107b970 | 4403 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4404 | gfc_gobble_whitespace (); |
a6c63173 TB |
4405 | c = gfc_peek_ascii_char (); |
4406 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4407 | { |
4408 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4409 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4410 | { |
9d64df18 | 4411 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4412 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4413 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4414 | NULL, 1); |
1107b970 PB |
4415 | } |
4416 | ||
4417 | /* Record the Successful match. */ | |
524af0d6 | 4418 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4419 | return MATCH_ERROR; |
a6c63173 TB |
4420 | if (c == ',') |
4421 | c = gfc_next_ascii_char (); | |
4422 | else if (gfc_match_eos () == MATCH_ERROR) | |
4423 | goto error; | |
1107b970 PB |
4424 | continue; |
4425 | } | |
e5ddaa24 TS |
4426 | |
4427 | gfc_current_locus = cur_loc; | |
4428 | } | |
4429 | ||
1107b970 PB |
4430 | /* Discard the (incorrectly) matched range. */ |
4431 | gfc_clear_new_implicit (); | |
4432 | ||
4433 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4434 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4435 | m = gfc_match_char_spec (&ts); |
1107b970 | 4436 | else |
e5ddaa24 | 4437 | { |
e2d29968 | 4438 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4439 | if (m == MATCH_NO) |
1107b970 PB |
4440 | { |
4441 | m = gfc_match_old_kind_spec (&ts); | |
4442 | if (m == MATCH_ERROR) | |
4443 | goto error; | |
4444 | if (m == MATCH_NO) | |
4445 | goto syntax; | |
4446 | } | |
e5ddaa24 | 4447 | } |
1107b970 PB |
4448 | if (m == MATCH_ERROR) |
4449 | goto error; | |
e5ddaa24 | 4450 | |
1107b970 | 4451 | m = match_implicit_range (); |
e5ddaa24 TS |
4452 | if (m == MATCH_ERROR) |
4453 | goto error; | |
4454 | if (m == MATCH_NO) | |
4455 | goto syntax; | |
4456 | ||
4457 | gfc_gobble_whitespace (); | |
8fc541d3 | 4458 | c = gfc_next_ascii_char (); |
a6c63173 | 4459 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4460 | goto syntax; |
4461 | ||
524af0d6 | 4462 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4463 | return MATCH_ERROR; |
e5ddaa24 TS |
4464 | } |
4465 | while (c == ','); | |
4466 | ||
1107b970 | 4467 | return MATCH_YES; |
e5ddaa24 TS |
4468 | |
4469 | syntax: | |
4470 | gfc_syntax_error (ST_IMPLICIT); | |
4471 | ||
4472 | error: | |
4473 | return MATCH_ERROR; | |
4474 | } | |
4475 | ||
66e4ab31 | 4476 | |
8998be20 TB |
4477 | match |
4478 | gfc_match_import (void) | |
4479 | { | |
4480 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4481 | match m; | |
4482 | gfc_symbol *sym; | |
4483 | gfc_symtree *st; | |
4484 | ||
66e4ab31 SK |
4485 | if (gfc_current_ns->proc_name == NULL |
4486 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4487 | { |
4488 | gfc_error ("IMPORT statement at %C only permitted in " | |
4489 | "an INTERFACE body"); | |
4490 | return MATCH_ERROR; | |
4491 | } | |
4492 | ||
4668d6f9 PT |
4493 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4494 | { | |
4495 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4496 | "in a module procedure interface body"); | |
4497 | return MATCH_ERROR; | |
4498 | } | |
4499 | ||
524af0d6 | 4500 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4501 | return MATCH_ERROR; |
4502 | ||
4503 | if (gfc_match_eos () == MATCH_YES) | |
4504 | { | |
4505 | /* All host variables should be imported. */ | |
4506 | gfc_current_ns->has_import_set = 1; | |
4507 | return MATCH_YES; | |
4508 | } | |
4509 | ||
4510 | if (gfc_match (" ::") == MATCH_YES) | |
4511 | { | |
4512 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4513 | { |
4514 | gfc_error ("Expecting list of named entities at %C"); | |
4515 | return MATCH_ERROR; | |
4516 | } | |
8998be20 TB |
4517 | } |
4518 | ||
4519 | for(;;) | |
4520 | { | |
2e8d9212 | 4521 | sym = NULL; |
8998be20 TB |
4522 | m = gfc_match (" %n", name); |
4523 | switch (m) | |
4524 | { | |
4525 | case MATCH_YES: | |
36d3fb4c | 4526 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4527 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4528 | { |
c4100eae | 4529 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4530 | return MATCH_ERROR; |
4531 | } | |
4e2cf5f5 | 4532 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4533 | && gfc_find_symbol (name, |
4534 | gfc_current_ns->proc_name->ns->parent, | |
4535 | 1, &sym)) | |
636dff67 | 4536 | { |
c4100eae | 4537 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4538 | return MATCH_ERROR; |
4539 | } | |
4540 | ||
4541 | if (sym == NULL) | |
4542 | { | |
c4100eae | 4543 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4544 | "at %C - does not exist.", name); |
4545 | return MATCH_ERROR; | |
4546 | } | |
4547 | ||
dd8b9dde | 4548 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4549 | { |
db30e21c | 4550 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4551 | "at %C", name); |
636dff67 SK |
4552 | goto next_item; |
4553 | } | |
4554 | ||
dd8b9dde | 4555 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4556 | st->n.sym = sym; |
4557 | sym->refs++; | |
5a8af0b4 | 4558 | sym->attr.imported = 1; |
8998be20 | 4559 | |
c3f34952 TB |
4560 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4561 | { | |
4562 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4563 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4564 | lower-case name contains the associated generic function. */ |
c3f34952 | 4565 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4566 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4567 | st->n.sym = sym; |
4568 | sym->refs++; | |
4569 | sym->attr.imported = 1; | |
4570 | } | |
4571 | ||
8998be20 TB |
4572 | goto next_item; |
4573 | ||
4574 | case MATCH_NO: | |
4575 | break; | |
4576 | ||
4577 | case MATCH_ERROR: | |
4578 | return MATCH_ERROR; | |
4579 | } | |
4580 | ||
4581 | next_item: | |
4582 | if (gfc_match_eos () == MATCH_YES) | |
4583 | break; | |
4584 | if (gfc_match_char (',') != MATCH_YES) | |
4585 | goto syntax; | |
4586 | } | |
4587 | ||
4588 | return MATCH_YES; | |
4589 | ||
4590 | syntax: | |
4591 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4592 | return MATCH_ERROR; | |
4593 | } | |
e5ddaa24 | 4594 | |
66e4ab31 | 4595 | |
f2449db4 RS |
4596 | /* A minimal implementation of gfc_match without whitespace, escape |
4597 | characters or variable arguments. Returns true if the next | |
4598 | characters match the TARGET template exactly. */ | |
4599 | ||
4600 | static bool | |
4601 | match_string_p (const char *target) | |
4602 | { | |
4603 | const char *p; | |
4604 | ||
4605 | for (p = target; *p; p++) | |
8fc541d3 | 4606 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4607 | return false; |
4608 | return true; | |
4609 | } | |
4610 | ||
6de9cd9a DN |
4611 | /* Matches an attribute specification including array specs. If |
4612 | successful, leaves the variables current_attr and current_as | |
4613 | holding the specification. Also sets the colon_seen variable for | |
4614 | later use by matchers associated with initializations. | |
4615 | ||
4616 | This subroutine is a little tricky in the sense that we don't know | |
4617 | if we really have an attr-spec until we hit the double colon. | |
4618 | Until that time, we can only return MATCH_NO. This forces us to | |
4619 | check for duplicate specification at this level. */ | |
4620 | ||
4621 | static match | |
4622 | match_attr_spec (void) | |
4623 | { | |
6de9cd9a | 4624 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4625 | enum |
6de9cd9a DN |
4626 | { GFC_DECL_BEGIN = 0, |
4627 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
4628 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4629 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4630 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4631 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4632 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4633 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4634 | }; |
6de9cd9a DN |
4635 | |
4636 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4637 | #define NUM_DECL GFC_DECL_END | |
4638 | ||
6de9cd9a DN |
4639 | locus start, seen_at[NUM_DECL]; |
4640 | int seen[NUM_DECL]; | |
09639a83 | 4641 | unsigned int d; |
6de9cd9a DN |
4642 | const char *attr; |
4643 | match m; | |
524af0d6 | 4644 | bool t; |
6de9cd9a DN |
4645 | |
4646 | gfc_clear_attr (¤t_attr); | |
63645982 | 4647 | start = gfc_current_locus; |
6de9cd9a DN |
4648 | |
4649 | current_as = NULL; | |
4650 | colon_seen = 0; | |
6f855a26 | 4651 | attr_seen = 0; |
6de9cd9a DN |
4652 | |
4653 | /* See if we get all of the keywords up to the final double colon. */ | |
4654 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4655 | seen[d] = 0; | |
4656 | ||
4657 | for (;;) | |
4658 | { | |
8fc541d3 | 4659 | char ch; |
a8b3b0b6 | 4660 | |
f2449db4 RS |
4661 | d = DECL_NONE; |
4662 | gfc_gobble_whitespace (); | |
4663 | ||
8fc541d3 | 4664 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4665 | if (ch == ':') |
4666 | { | |
4667 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4668 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4669 | break; |
4670 | } | |
4671 | else if (ch == ',') | |
a8b3b0b6 | 4672 | { |
a8b3b0b6 | 4673 | gfc_gobble_whitespace (); |
8fc541d3 | 4674 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4675 | { |
f2449db4 | 4676 | case 'a': |
1eee5628 TB |
4677 | gfc_next_ascii_char (); |
4678 | switch (gfc_next_ascii_char ()) | |
4679 | { | |
4680 | case 'l': | |
4681 | if (match_string_p ("locatable")) | |
4682 | { | |
4683 | /* Matched "allocatable". */ | |
4684 | d = DECL_ALLOCATABLE; | |
4685 | } | |
4686 | break; | |
4687 | ||
4688 | case 's': | |
4689 | if (match_string_p ("ynchronous")) | |
4690 | { | |
4691 | /* Matched "asynchronous". */ | |
4692 | d = DECL_ASYNCHRONOUS; | |
4693 | } | |
4694 | break; | |
34d567d1 FR |
4695 | |
4696 | case 'u': | |
4697 | if (match_string_p ("tomatic")) | |
4698 | { | |
4699 | /* Matched "automatic". */ | |
4700 | d = DECL_AUTOMATIC; | |
4701 | } | |
4702 | break; | |
1eee5628 | 4703 | } |
fe4e525c | 4704 | break; |
f2449db4 RS |
4705 | |
4706 | case 'b': | |
a8b3b0b6 | 4707 | /* Try and match the bind(c). */ |
1eabf70a | 4708 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4709 | if (m == MATCH_YES) |
a8b3b0b6 | 4710 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4711 | else if (m == MATCH_ERROR) |
4712 | goto cleanup; | |
f2449db4 RS |
4713 | break; |
4714 | ||
be59db2d | 4715 | case 'c': |
fe4e525c TB |
4716 | gfc_next_ascii_char (); |
4717 | if ('o' != gfc_next_ascii_char ()) | |
4718 | break; | |
4719 | switch (gfc_next_ascii_char ()) | |
4720 | { | |
4721 | case 'd': | |
4722 | if (match_string_p ("imension")) | |
4723 | { | |
4724 | d = DECL_CODIMENSION; | |
4725 | break; | |
4726 | } | |
191816a3 | 4727 | /* FALLTHRU */ |
fe4e525c TB |
4728 | case 'n': |
4729 | if (match_string_p ("tiguous")) | |
4730 | { | |
4731 | d = DECL_CONTIGUOUS; | |
4732 | break; | |
4733 | } | |
4734 | } | |
be59db2d TB |
4735 | break; |
4736 | ||
f2449db4 RS |
4737 | case 'd': |
4738 | if (match_string_p ("dimension")) | |
4739 | d = DECL_DIMENSION; | |
4740 | break; | |
4741 | ||
4742 | case 'e': | |
4743 | if (match_string_p ("external")) | |
4744 | d = DECL_EXTERNAL; | |
4745 | break; | |
4746 | ||
4747 | case 'i': | |
4748 | if (match_string_p ("int")) | |
4749 | { | |
8fc541d3 | 4750 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4751 | if (ch == 'e') |
4752 | { | |
4753 | if (match_string_p ("nt")) | |
4754 | { | |
4755 | /* Matched "intent". */ | |
4756 | /* TODO: Call match_intent_spec from here. */ | |
4757 | if (gfc_match (" ( in out )") == MATCH_YES) | |
4758 | d = DECL_INOUT; | |
4759 | else if (gfc_match (" ( in )") == MATCH_YES) | |
4760 | d = DECL_IN; | |
4761 | else if (gfc_match (" ( out )") == MATCH_YES) | |
4762 | d = DECL_OUT; | |
4763 | } | |
4764 | } | |
4765 | else if (ch == 'r') | |
4766 | { | |
4767 | if (match_string_p ("insic")) | |
4768 | { | |
4769 | /* Matched "intrinsic". */ | |
4770 | d = DECL_INTRINSIC; | |
4771 | } | |
4772 | } | |
4773 | } | |
4774 | break; | |
4775 | ||
5bab4c96 PT |
4776 | case 'k': |
4777 | if (match_string_p ("kind")) | |
4778 | d = DECL_KIND; | |
4779 | break; | |
4780 | ||
4781 | case 'l': | |
4782 | if (match_string_p ("len")) | |
4783 | d = DECL_LEN; | |
4784 | break; | |
4785 | ||
f2449db4 RS |
4786 | case 'o': |
4787 | if (match_string_p ("optional")) | |
4788 | d = DECL_OPTIONAL; | |
4789 | break; | |
4790 | ||
4791 | case 'p': | |
8fc541d3 FXC |
4792 | gfc_next_ascii_char (); |
4793 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
4794 | { |
4795 | case 'a': | |
4796 | if (match_string_p ("rameter")) | |
4797 | { | |
4798 | /* Matched "parameter". */ | |
4799 | d = DECL_PARAMETER; | |
4800 | } | |
4801 | break; | |
4802 | ||
4803 | case 'o': | |
4804 | if (match_string_p ("inter")) | |
4805 | { | |
4806 | /* Matched "pointer". */ | |
4807 | d = DECL_POINTER; | |
4808 | } | |
4809 | break; | |
4810 | ||
4811 | case 'r': | |
8fc541d3 | 4812 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4813 | if (ch == 'i') |
4814 | { | |
4815 | if (match_string_p ("vate")) | |
4816 | { | |
4817 | /* Matched "private". */ | |
4818 | d = DECL_PRIVATE; | |
4819 | } | |
4820 | } | |
4821 | else if (ch == 'o') | |
4822 | { | |
4823 | if (match_string_p ("tected")) | |
4824 | { | |
4825 | /* Matched "protected". */ | |
4826 | d = DECL_PROTECTED; | |
4827 | } | |
4828 | } | |
4829 | break; | |
4830 | ||
4831 | case 'u': | |
4832 | if (match_string_p ("blic")) | |
4833 | { | |
4834 | /* Matched "public". */ | |
4835 | d = DECL_PUBLIC; | |
4836 | } | |
4837 | break; | |
4838 | } | |
4839 | break; | |
4840 | ||
4841 | case 's': | |
34d567d1 FR |
4842 | gfc_next_ascii_char (); |
4843 | switch (gfc_next_ascii_char ()) | |
4844 | { | |
4845 | case 'a': | |
4846 | if (match_string_p ("ve")) | |
4847 | { | |
4848 | /* Matched "save". */ | |
4849 | d = DECL_SAVE; | |
4850 | } | |
4851 | break; | |
4852 | ||
4853 | case 't': | |
4854 | if (match_string_p ("atic")) | |
4855 | { | |
4856 | /* Matched "static". */ | |
4857 | d = DECL_STATIC; | |
4858 | } | |
4859 | break; | |
4860 | } | |
f2449db4 RS |
4861 | break; |
4862 | ||
4863 | case 't': | |
4864 | if (match_string_p ("target")) | |
4865 | d = DECL_TARGET; | |
4866 | break; | |
4867 | ||
4868 | case 'v': | |
8fc541d3 FXC |
4869 | gfc_next_ascii_char (); |
4870 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
4871 | if (ch == 'a') |
4872 | { | |
4873 | if (match_string_p ("lue")) | |
4874 | { | |
4875 | /* Matched "value". */ | |
4876 | d = DECL_VALUE; | |
4877 | } | |
4878 | } | |
4879 | else if (ch == 'o') | |
4880 | { | |
4881 | if (match_string_p ("latile")) | |
4882 | { | |
4883 | /* Matched "volatile". */ | |
4884 | d = DECL_VOLATILE; | |
4885 | } | |
4886 | } | |
4887 | break; | |
a8b3b0b6 CR |
4888 | } |
4889 | } | |
d468bcdb | 4890 | |
f2449db4 RS |
4891 | /* No double colon and no recognizable decl_type, so assume that |
4892 | we've been looking at something else the whole time. */ | |
4893 | if (d == DECL_NONE) | |
4894 | { | |
4895 | m = MATCH_NO; | |
4896 | goto cleanup; | |
4897 | } | |
d51347f9 | 4898 | |
acb388a0 JD |
4899 | /* Check to make sure any parens are paired up correctly. */ |
4900 | if (gfc_match_parens () == MATCH_ERROR) | |
4901 | { | |
4902 | m = MATCH_ERROR; | |
4903 | goto cleanup; | |
4904 | } | |
4905 | ||
6de9cd9a | 4906 | seen[d]++; |
63645982 | 4907 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 4908 | |
d3a9eea2 | 4909 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 4910 | { |
d3a9eea2 | 4911 | gfc_array_spec *as = NULL; |
6de9cd9a | 4912 | |
d3a9eea2 TB |
4913 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
4914 | d == DECL_CODIMENSION); | |
4915 | ||
4916 | if (current_as == NULL) | |
4917 | current_as = as; | |
4918 | else if (m == MATCH_YES) | |
6de9cd9a | 4919 | { |
524af0d6 | 4920 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 4921 | m = MATCH_ERROR; |
cede9502 | 4922 | free (as); |
6de9cd9a DN |
4923 | } |
4924 | ||
be59db2d TB |
4925 | if (m == MATCH_NO) |
4926 | { | |
d3a9eea2 TB |
4927 | if (d == DECL_CODIMENSION) |
4928 | gfc_error ("Missing codimension specification at %C"); | |
4929 | else | |
4930 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
4931 | m = MATCH_ERROR; |
4932 | } | |
4933 | ||
4934 | if (m == MATCH_ERROR) | |
4935 | goto cleanup; | |
4936 | } | |
6de9cd9a DN |
4937 | } |
4938 | ||
6de9cd9a DN |
4939 | /* Since we've seen a double colon, we have to be looking at an |
4940 | attr-spec. This means that we can now issue errors. */ | |
4941 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4942 | if (seen[d] > 1) | |
4943 | { | |
4944 | switch (d) | |
4945 | { | |
4946 | case DECL_ALLOCATABLE: | |
4947 | attr = "ALLOCATABLE"; | |
4948 | break; | |
1eee5628 TB |
4949 | case DECL_ASYNCHRONOUS: |
4950 | attr = "ASYNCHRONOUS"; | |
4951 | break; | |
be59db2d TB |
4952 | case DECL_CODIMENSION: |
4953 | attr = "CODIMENSION"; | |
4954 | break; | |
fe4e525c TB |
4955 | case DECL_CONTIGUOUS: |
4956 | attr = "CONTIGUOUS"; | |
4957 | break; | |
6de9cd9a DN |
4958 | case DECL_DIMENSION: |
4959 | attr = "DIMENSION"; | |
4960 | break; | |
4961 | case DECL_EXTERNAL: | |
4962 | attr = "EXTERNAL"; | |
4963 | break; | |
4964 | case DECL_IN: | |
4965 | attr = "INTENT (IN)"; | |
4966 | break; | |
4967 | case DECL_OUT: | |
4968 | attr = "INTENT (OUT)"; | |
4969 | break; | |
4970 | case DECL_INOUT: | |
4971 | attr = "INTENT (IN OUT)"; | |
4972 | break; | |
4973 | case DECL_INTRINSIC: | |
4974 | attr = "INTRINSIC"; | |
4975 | break; | |
4976 | case DECL_OPTIONAL: | |
4977 | attr = "OPTIONAL"; | |
4978 | break; | |
5bab4c96 PT |
4979 | case DECL_KIND: |
4980 | attr = "KIND"; | |
4981 | break; | |
4982 | case DECL_LEN: | |
4983 | attr = "LEN"; | |
4984 | break; | |
6de9cd9a DN |
4985 | case DECL_PARAMETER: |
4986 | attr = "PARAMETER"; | |
4987 | break; | |
4988 | case DECL_POINTER: | |
4989 | attr = "POINTER"; | |
4990 | break; | |
ee7e677f TB |
4991 | case DECL_PROTECTED: |
4992 | attr = "PROTECTED"; | |
4993 | break; | |
6de9cd9a DN |
4994 | case DECL_PRIVATE: |
4995 | attr = "PRIVATE"; | |
4996 | break; | |
4997 | case DECL_PUBLIC: | |
4998 | attr = "PUBLIC"; | |
4999 | break; | |
5000 | case DECL_SAVE: | |
5001 | attr = "SAVE"; | |
5002 | break; | |
34d567d1 FR |
5003 | case DECL_STATIC: |
5004 | attr = "STATIC"; | |
5005 | break; | |
5006 | case DECL_AUTOMATIC: | |
5007 | attr = "AUTOMATIC"; | |
5008 | break; | |
6de9cd9a DN |
5009 | case DECL_TARGET: |
5010 | attr = "TARGET"; | |
5011 | break; | |
a8b3b0b6 CR |
5012 | case DECL_IS_BIND_C: |
5013 | attr = "IS_BIND_C"; | |
5014 | break; | |
5015 | case DECL_VALUE: | |
5016 | attr = "VALUE"; | |
5017 | break; | |
775e6c3a TB |
5018 | case DECL_VOLATILE: |
5019 | attr = "VOLATILE"; | |
5020 | break; | |
6de9cd9a | 5021 | default: |
66e4ab31 | 5022 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5023 | } |
5024 | ||
5025 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5026 | m = MATCH_ERROR; | |
5027 | goto cleanup; | |
5028 | } | |
5029 | ||
5030 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5031 | to the current attribute. */ | |
5032 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5033 | { | |
5034 | if (seen[d] == 0) | |
5035 | continue; | |
6f855a26 FR |
5036 | else |
5037 | attr_seen = 1; | |
6de9cd9a | 5038 | |
34d567d1 FR |
5039 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5040 | && !flag_dec_static) | |
5041 | { | |
cf004230 FR |
5042 | gfc_error ("%s at %L is a DEC extension, enable with " |
5043 | "%<-fdec-static%>", | |
34d567d1 FR |
5044 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5045 | m = MATCH_ERROR; | |
5046 | goto cleanup; | |
5047 | } | |
5048 | /* Allow SAVE with STATIC, but don't complain. */ | |
5049 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5050 | continue; | |
5051 | ||
6de9cd9a | 5052 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
5053 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5054 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5055 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5056 | { |
5046aff5 PT |
5057 | if (d == DECL_ALLOCATABLE) |
5058 | { | |
524af0d6 JB |
5059 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5060 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
5061 | { |
5062 | m = MATCH_ERROR; | |
5063 | goto cleanup; | |
5064 | } | |
636dff67 | 5065 | } |
5bab4c96 PT |
5066 | else if (d == DECL_KIND) |
5067 | { | |
5068 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5069 | "attribute at %C in a TYPE definition")) | |
5070 | { | |
5071 | m = MATCH_ERROR; | |
5072 | goto cleanup; | |
5073 | } | |
5074 | if (current_ts.type != BT_INTEGER) | |
5075 | { | |
5076 | gfc_error ("Component with KIND attribute at %C must be " | |
5077 | "INTEGER"); | |
5078 | m = MATCH_ERROR; | |
5079 | goto cleanup; | |
5080 | } | |
5081 | if (current_ts.kind != gfc_default_integer_kind) | |
5082 | { | |
5083 | gfc_error ("Component with KIND attribute at %C must be " | |
5084 | "default integer kind (%d)", | |
5085 | gfc_default_integer_kind); | |
5086 | m = MATCH_ERROR; | |
5087 | goto cleanup; | |
5088 | } | |
5089 | } | |
5090 | else if (d == DECL_LEN) | |
5091 | { | |
5092 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5093 | "attribute at %C in a TYPE definition")) | |
5094 | { | |
5095 | m = MATCH_ERROR; | |
5096 | goto cleanup; | |
5097 | } | |
5098 | if (current_ts.type != BT_INTEGER) | |
5099 | { | |
5100 | gfc_error ("Component with LEN attribute at %C must be " | |
5101 | "INTEGER"); | |
5102 | m = MATCH_ERROR; | |
5103 | goto cleanup; | |
5104 | } | |
5105 | if (current_ts.kind != gfc_default_integer_kind) | |
5106 | { | |
5107 | gfc_error ("Component with LEN attribute at %C must be " | |
5108 | "default integer kind (%d)", | |
5109 | gfc_default_integer_kind); | |
5110 | m = MATCH_ERROR; | |
5111 | goto cleanup; | |
5112 | } | |
5113 | } | |
636dff67 | 5114 | else |
5046aff5 PT |
5115 | { |
5116 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5117 | &seen_at[d]); |
5046aff5 PT |
5118 | m = MATCH_ERROR; |
5119 | goto cleanup; | |
5120 | } | |
6de9cd9a DN |
5121 | } |
5122 | ||
4213f93b | 5123 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5124 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5125 | { |
5126 | if (d == DECL_PRIVATE) | |
5127 | attr = "PRIVATE"; | |
5128 | else | |
5129 | attr = "PUBLIC"; | |
d51347f9 TB |
5130 | if (gfc_current_state () == COMP_DERIVED |
5131 | && gfc_state_stack->previous | |
5132 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5133 | { | |
524af0d6 | 5134 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5135 | "at %L in a TYPE definition", attr, |
524af0d6 | 5136 | &seen_at[d])) |
d51347f9 TB |
5137 | { |
5138 | m = MATCH_ERROR; | |
5139 | goto cleanup; | |
5140 | } | |
5141 | } | |
5142 | else | |
5143 | { | |
5144 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5145 | "specification part of a module", attr, &seen_at[d]); | |
5146 | m = MATCH_ERROR; | |
5147 | goto cleanup; | |
5148 | } | |
4213f93b PT |
5149 | } |
5150 | ||
5bab4c96 PT |
5151 | if (gfc_current_state () != COMP_DERIVED |
5152 | && (d == DECL_KIND || d == DECL_LEN)) | |
5153 | { | |
5154 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5155 | "definition", &seen_at[d]); | |
5156 | m = MATCH_ERROR; | |
5157 | goto cleanup; | |
5158 | } | |
5159 | ||
6de9cd9a DN |
5160 | switch (d) |
5161 | { | |
5162 | case DECL_ALLOCATABLE: | |
5163 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5164 | break; | |
5165 | ||
1eee5628 | 5166 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5167 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5168 | t = false; | |
1eee5628 TB |
5169 | else |
5170 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5171 | break; | |
5172 | ||
be59db2d TB |
5173 | case DECL_CODIMENSION: |
5174 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5175 | break; | |
5176 | ||
fe4e525c | 5177 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5178 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5179 | t = false; | |
fe4e525c TB |
5180 | else |
5181 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5182 | break; | |
5183 | ||
6de9cd9a | 5184 | case DECL_DIMENSION: |
231b2fcc | 5185 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5186 | break; |
5187 | ||
5188 | case DECL_EXTERNAL: | |
5189 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5190 | break; | |
5191 | ||
5192 | case DECL_IN: | |
5193 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5194 | break; | |
5195 | ||
5196 | case DECL_OUT: | |
5197 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5198 | break; | |
5199 | ||
5200 | case DECL_INOUT: | |
5201 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5202 | break; | |
5203 | ||
5204 | case DECL_INTRINSIC: | |
5205 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5206 | break; | |
5207 | ||
5208 | case DECL_OPTIONAL: | |
5209 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5210 | break; | |
5211 | ||
5bab4c96 PT |
5212 | case DECL_KIND: |
5213 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5214 | break; | |
5215 | ||
5216 | case DECL_LEN: | |
5217 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5218 | break; | |
5219 | ||
6de9cd9a | 5220 | case DECL_PARAMETER: |
231b2fcc | 5221 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5222 | break; |
5223 | ||
5224 | case DECL_POINTER: | |
5225 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5226 | break; | |
5227 | ||
ee7e677f | 5228 | case DECL_PROTECTED: |
721be0f4 SK |
5229 | if (gfc_current_state () != COMP_MODULE |
5230 | || (gfc_current_ns->proc_name | |
5231 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5232 | { |
5233 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5234 | "part of a module"); | |
524af0d6 | 5235 | t = false; |
ee7e677f TB |
5236 | break; |
5237 | } | |
5238 | ||
524af0d6 JB |
5239 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5240 | t = false; | |
ee7e677f TB |
5241 | else |
5242 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5243 | break; | |
5244 | ||
6de9cd9a | 5245 | case DECL_PRIVATE: |
231b2fcc TS |
5246 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5247 | &seen_at[d]); | |
6de9cd9a DN |
5248 | break; |
5249 | ||
5250 | case DECL_PUBLIC: | |
231b2fcc TS |
5251 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5252 | &seen_at[d]); | |
6de9cd9a DN |
5253 | break; |
5254 | ||
34d567d1 | 5255 | case DECL_STATIC: |
6de9cd9a | 5256 | case DECL_SAVE: |
80f95228 | 5257 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5258 | break; |
5259 | ||
34d567d1 FR |
5260 | case DECL_AUTOMATIC: |
5261 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5262 | break; | |
5263 | ||
6de9cd9a DN |
5264 | case DECL_TARGET: |
5265 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5266 | break; | |
5267 | ||
a8b3b0b6 CR |
5268 | case DECL_IS_BIND_C: |
5269 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5270 | break; | |
f5acf0f2 | 5271 | |
06469efd | 5272 | case DECL_VALUE: |
524af0d6 JB |
5273 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5274 | t = false; | |
06469efd PT |
5275 | else |
5276 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5277 | break; | |
5278 | ||
775e6c3a | 5279 | case DECL_VOLATILE: |
524af0d6 JB |
5280 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5281 | t = false; | |
775e6c3a TB |
5282 | else |
5283 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5284 | break; | |
5285 | ||
6de9cd9a DN |
5286 | default: |
5287 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5288 | } | |
5289 | ||
524af0d6 | 5290 | if (!t) |
6de9cd9a DN |
5291 | { |
5292 | m = MATCH_ERROR; | |
5293 | goto cleanup; | |
5294 | } | |
5295 | } | |
5296 | ||
dab2cbf8 | 5297 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5298 | if ((gfc_current_state () == COMP_MODULE |
5299 | || gfc_current_state () == COMP_SUBMODULE) | |
5300 | && !current_attr.save | |
dab2cbf8 | 5301 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5302 | current_attr.save = SAVE_IMPLICIT; |
5303 | ||
6de9cd9a DN |
5304 | colon_seen = 1; |
5305 | return MATCH_YES; | |
5306 | ||
5307 | cleanup: | |
63645982 | 5308 | gfc_current_locus = start; |
6de9cd9a DN |
5309 | gfc_free_array_spec (current_as); |
5310 | current_as = NULL; | |
6f855a26 | 5311 | attr_seen = 0; |
6de9cd9a DN |
5312 | return m; |
5313 | } | |
5314 | ||
5315 | ||
a8b3b0b6 CR |
5316 | /* Set the binding label, dest_label, either with the binding label |
5317 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5318 | will be the symbol name in all lower case, as required by the draft | |
5319 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5320 | there is more than one argument (num_idents), it is an error. */ | |
5321 | ||
524af0d6 | 5322 | static bool |
f5acf0f2 | 5323 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5324 | int num_idents) |
a8b3b0b6 | 5325 | { |
ad4a2f64 | 5326 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5327 | { |
ad4a2f64 TB |
5328 | gfc_error ("Multiple identifiers provided with " |
5329 | "single NAME= specifier at %C"); | |
524af0d6 | 5330 | return false; |
ad4a2f64 | 5331 | } |
a8b3b0b6 | 5332 | |
62603fae | 5333 | if (curr_binding_label) |
eea58adb | 5334 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5335 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5336 | else |
5337 | { | |
5338 | /* No binding label given, and the NAME= specifier did not exist, | |
5339 | which means there was no NAME="". */ | |
5340 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5341 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5342 | } |
f5acf0f2 | 5343 | |
524af0d6 | 5344 | return true; |
a8b3b0b6 CR |
5345 | } |
5346 | ||
5347 | ||
5348 | /* Set the status of the given common block as being BIND(C) or not, | |
5349 | depending on the given parameter, is_bind_c. */ | |
5350 | ||
5351 | void | |
5352 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5353 | { | |
5354 | com_block->is_bind_c = is_bind_c; | |
5355 | return; | |
5356 | } | |
5357 | ||
5358 | ||
5359 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5360 | ||
524af0d6 | 5361 | bool |
00820a2a | 5362 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5363 | { |
bc21d315 | 5364 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5365 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5366 | ? true : false; |
00820a2a | 5367 | else if (ts->type == BT_CLASS) |
524af0d6 | 5368 | return false; |
45a69325 | 5369 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5370 | return false; |
45a69325 | 5371 | |
524af0d6 | 5372 | return true; |
a8b3b0b6 CR |
5373 | } |
5374 | ||
5375 | ||
5376 | /* Verify that the variables of a given common block, which has been | |
5377 | defined with the attribute specifier bind(c), to be of a C | |
5378 | interoperable type. Errors will be reported here, if | |
5379 | encountered. */ | |
5380 | ||
524af0d6 | 5381 | bool |
a8b3b0b6 CR |
5382 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5383 | { | |
5384 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5385 | bool retval = true; |
a8b3b0b6 CR |
5386 | |
5387 | curr_sym = com_block->head; | |
f5acf0f2 | 5388 | |
a8b3b0b6 CR |
5389 | /* Make sure we have at least one symbol. */ |
5390 | if (curr_sym == NULL) | |
5391 | return retval; | |
5392 | ||
5393 | /* Here we know we have a symbol, so we'll execute this loop | |
5394 | at least once. */ | |
5395 | do | |
5396 | { | |
5397 | /* The second to last param, 1, says this is in a common block. */ | |
5398 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5399 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5400 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5401 | |
5402 | return retval; | |
5403 | } | |
5404 | ||
5405 | ||
5406 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5407 | an appropriate error message is reported. */ | |
5408 | ||
524af0d6 | 5409 | bool |
a8b3b0b6 CR |
5410 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5411 | int is_in_common, gfc_common_head *com_block) | |
5412 | { | |
8327f9c2 | 5413 | bool bind_c_function = false; |
524af0d6 | 5414 | bool retval = true; |
d8fa96e0 | 5415 | |
8327f9c2 TB |
5416 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5417 | bind_c_function = true; | |
5418 | ||
d8fa96e0 CR |
5419 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5420 | { | |
5421 | tmp_sym = tmp_sym->result; | |
5422 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5423 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5424 | { |
48749dbc MLI |
5425 | gfc_warning (OPT_Wc_binding_type, |
5426 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5427 | "%L may not be C interoperable", tmp_sym->name, |
5428 | &tmp_sym->declared_at); | |
5429 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5430 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5431 | tmp_sym->ts.is_c_interop = 1; | |
5432 | tmp_sym->attr.is_c_interop = 1; | |
5433 | } | |
5434 | } | |
8327f9c2 | 5435 | |
a8b3b0b6 CR |
5436 | /* Here, we know we have the bind(c) attribute, so if we have |
5437 | enough type info, then verify that it's a C interop kind. | |
5438 | The info could be in the symbol already, or possibly still in | |
5439 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5440 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5441 | { |
524af0d6 | 5442 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5443 | { |
5444 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5445 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5446 | { |
48749dbc MLI |
5447 | gfc_warning (OPT_Wc_binding_type, |
5448 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5449 | "may not be a C interoperable " |
48749dbc | 5450 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5451 | tmp_sym->name, com_block->name, |
5452 | &(tmp_sym->declared_at), com_block->name); | |
5453 | } | |
5454 | else | |
5455 | { | |
5456 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5457 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5458 | "interoperable but it is BIND(C)", |
5459 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5460 | else if (warn_c_binding_type) |
48749dbc | 5461 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5462 | "may not be a C interoperable " |
c4100eae | 5463 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5464 | tmp_sym->name, &(tmp_sym->declared_at)); |
5465 | } | |
5466 | } | |
f5acf0f2 | 5467 | |
a8b3b0b6 CR |
5468 | /* Variables declared w/in a common block can't be bind(c) |
5469 | since there's no way for C to see these variables, so there's | |
5470 | semantically no reason for the attribute. */ | |
5471 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5472 | { | |
c4100eae | 5473 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5474 | "%L cannot be declared with BIND(C) " |
5475 | "since it is not a global", | |
5476 | tmp_sym->name, com_block->name, | |
5477 | &(tmp_sym->declared_at)); | |
524af0d6 | 5478 | retval = false; |
a8b3b0b6 | 5479 | } |
f5acf0f2 | 5480 | |
a8b3b0b6 CR |
5481 | /* Scalar variables that are bind(c) can not have the pointer |
5482 | or allocatable attributes. */ | |
5483 | if (tmp_sym->attr.is_bind_c == 1) | |
5484 | { | |
5485 | if (tmp_sym->attr.pointer == 1) | |
5486 | { | |
c4100eae | 5487 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5488 | "POINTER and BIND(C) attributes", |
5489 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5490 | retval = false; |
a8b3b0b6 CR |
5491 | } |
5492 | ||
5493 | if (tmp_sym->attr.allocatable == 1) | |
5494 | { | |
c4100eae | 5495 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5496 | "ALLOCATABLE and BIND(C) attributes", |
5497 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5498 | retval = false; |
a8b3b0b6 CR |
5499 | } |
5500 | ||
8327f9c2 TB |
5501 | } |
5502 | ||
5503 | /* If it is a BIND(C) function, make sure the return value is a | |
5504 | scalar value. The previous tests in this function made sure | |
5505 | the type is interoperable. */ | |
5506 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5507 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5508 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5509 | ||
5510 | /* BIND(C) functions can not return a character string. */ | |
5511 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
5512 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5513 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5514 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 5515 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
5516 | "be a character string", tmp_sym->name, |
5517 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
5518 | } |
5519 | ||
5520 | /* See if the symbol has been marked as private. If it has, make sure | |
5521 | there is no binding label and warn the user if there is one. */ | |
5522 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5523 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5524 | /* Use gfc_warning_now because we won't say that the symbol fails |
5525 | just because of this. */ | |
db30e21c | 5526 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5527 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5528 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5529 | ||
5530 | return retval; | |
5531 | } | |
5532 | ||
5533 | ||
5534 | /* Set the appropriate fields for a symbol that's been declared as | |
5535 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5536 | the type is C interoperable. Errors are reported by the functions | |
5537 | used to set/test these fields. */ | |
5538 | ||
524af0d6 | 5539 | bool |
a8b3b0b6 CR |
5540 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5541 | { | |
524af0d6 | 5542 | bool retval = true; |
f5acf0f2 | 5543 | |
a8b3b0b6 CR |
5544 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5545 | ||
5546 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5547 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5548 | ||
524af0d6 JB |
5549 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5550 | return false; | |
a8b3b0b6 CR |
5551 | |
5552 | return retval; | |
5553 | } | |
5554 | ||
5555 | ||
5556 | /* Set the fields marking the given common block as BIND(C), including | |
5557 | a binding label, and report any errors encountered. */ | |
5558 | ||
524af0d6 | 5559 | bool |
a8b3b0b6 CR |
5560 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5561 | { | |
524af0d6 | 5562 | bool retval = true; |
f5acf0f2 | 5563 | |
a8b3b0b6 | 5564 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5565 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5566 | num_idents)) |
5567 | return false; | |
a8b3b0b6 CR |
5568 | |
5569 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5570 | set_com_block_bind_c (com_block, 1); | |
5571 | ||
5572 | return retval; | |
5573 | } | |
5574 | ||
5575 | ||
5576 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5577 | attribute applies to. */ | |
5578 | ||
524af0d6 | 5579 | bool |
a8b3b0b6 CR |
5580 | get_bind_c_idents (void) |
5581 | { | |
5582 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5583 | int num_idents = 0; | |
5584 | gfc_symbol *tmp_sym = NULL; | |
5585 | match found_id; | |
5586 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5587 | |
a8b3b0b6 CR |
5588 | if (gfc_match_name (name) == MATCH_YES) |
5589 | { | |
5590 | found_id = MATCH_YES; | |
5591 | gfc_get_ha_symbol (name, &tmp_sym); | |
5592 | } | |
5593 | else if (match_common_name (name) == MATCH_YES) | |
5594 | { | |
5595 | found_id = MATCH_YES; | |
5596 | com_block = gfc_get_common (name, 0); | |
5597 | } | |
5598 | else | |
5599 | { | |
5600 | gfc_error ("Need either entity or common block name for " | |
5601 | "attribute specification statement at %C"); | |
524af0d6 | 5602 | return false; |
a8b3b0b6 | 5603 | } |
f5acf0f2 | 5604 | |
a8b3b0b6 CR |
5605 | /* Save the current identifier and look for more. */ |
5606 | do | |
5607 | { | |
5608 | /* Increment the number of identifiers found for this spec stmt. */ | |
5609 | num_idents++; | |
5610 | ||
5611 | /* Make sure we have a sym or com block, and verify that it can | |
5612 | be bind(c). Set the appropriate field(s) and look for more | |
5613 | identifiers. */ | |
f5acf0f2 | 5614 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5615 | { |
5616 | if (tmp_sym != NULL) | |
5617 | { | |
524af0d6 JB |
5618 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5619 | return false; | |
a8b3b0b6 CR |
5620 | } |
5621 | else | |
5622 | { | |
524af0d6 JB |
5623 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5624 | return false; | |
a8b3b0b6 | 5625 | } |
f5acf0f2 | 5626 | |
a8b3b0b6 CR |
5627 | /* Look to see if we have another identifier. */ |
5628 | tmp_sym = NULL; | |
5629 | if (gfc_match_eos () == MATCH_YES) | |
5630 | found_id = MATCH_NO; | |
5631 | else if (gfc_match_char (',') != MATCH_YES) | |
5632 | found_id = MATCH_NO; | |
5633 | else if (gfc_match_name (name) == MATCH_YES) | |
5634 | { | |
5635 | found_id = MATCH_YES; | |
5636 | gfc_get_ha_symbol (name, &tmp_sym); | |
5637 | } | |
5638 | else if (match_common_name (name) == MATCH_YES) | |
5639 | { | |
5640 | found_id = MATCH_YES; | |
5641 | com_block = gfc_get_common (name, 0); | |
5642 | } | |
5643 | else | |
5644 | { | |
5645 | gfc_error ("Missing entity or common block name for " | |
5646 | "attribute specification statement at %C"); | |
524af0d6 | 5647 | return false; |
a8b3b0b6 CR |
5648 | } |
5649 | } | |
5650 | else | |
5651 | { | |
5652 | gfc_internal_error ("Missing symbol"); | |
5653 | } | |
5654 | } while (found_id == MATCH_YES); | |
5655 | ||
5656 | /* if we get here we were successful */ | |
524af0d6 | 5657 | return true; |
a8b3b0b6 CR |
5658 | } |
5659 | ||
5660 | ||
5661 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5662 | |
a8b3b0b6 CR |
5663 | match |
5664 | gfc_match_bind_c_stmt (void) | |
5665 | { | |
5666 | match found_match = MATCH_NO; | |
5667 | gfc_typespec *ts; | |
5668 | ||
5669 | ts = ¤t_ts; | |
f5acf0f2 | 5670 | |
a8b3b0b6 CR |
5671 | /* This may not be necessary. */ |
5672 | gfc_clear_ts (ts); | |
5673 | /* Clear the temporary binding label holder. */ | |
62603fae | 5674 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5675 | |
5676 | /* Look for the bind(c). */ | |
1eabf70a | 5677 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5678 | |
5679 | if (found_match == MATCH_YES) | |
5680 | { | |
878cdb7b TB |
5681 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5682 | return MATCH_ERROR; | |
5683 | ||
a8b3b0b6 CR |
5684 | /* Look for the :: now, but it is not required. */ |
5685 | gfc_match (" :: "); | |
5686 | ||
5687 | /* Get the identifier(s) that needs to be updated. This may need to | |
5688 | change to hand the flag(s) for the attr specified so all identifiers | |
5689 | found can have all appropriate parts updated (assuming that the same | |
5690 | spec stmt can have multiple attrs, such as both bind(c) and | |
5691 | allocatable...). */ | |
524af0d6 | 5692 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5693 | /* Error message should have printed already. */ |
5694 | return MATCH_ERROR; | |
5695 | } | |
5696 | ||
5697 | return found_match; | |
5698 | } | |
5699 | ||
5700 | ||
6de9cd9a DN |
5701 | /* Match a data declaration statement. */ |
5702 | ||
5703 | match | |
5704 | gfc_match_data_decl (void) | |
5705 | { | |
5706 | gfc_symbol *sym; | |
5707 | match m; | |
949d5b72 | 5708 | int elem; |
6de9cd9a | 5709 | |
5bab4c96 PT |
5710 | type_param_spec_list = NULL; |
5711 | decl_type_param_list = NULL; | |
5712 | ||
a8b3b0b6 | 5713 | num_idents_on_line = 0; |
f5acf0f2 | 5714 | |
e74f1cc8 | 5715 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5716 | if (m != MATCH_YES) |
5717 | return m; | |
5718 | ||
2e23972e | 5719 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5720 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5721 | { |
bc21d315 | 5722 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5723 | |
5724 | if (sym == NULL) | |
5725 | { | |
5726 | m = MATCH_ERROR; | |
5727 | goto cleanup; | |
5728 | } | |
5729 | ||
bc21d315 | 5730 | current_ts.u.derived = sym; |
6de9cd9a DN |
5731 | } |
5732 | ||
5733 | m = match_attr_spec (); | |
5734 | if (m == MATCH_ERROR) | |
5735 | { | |
5736 | m = MATCH_NO; | |
5737 | goto cleanup; | |
5738 | } | |
5739 | ||
8b704316 PT |
5740 | if (current_ts.type == BT_CLASS |
5741 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5742 | goto ok; | |
5743 | ||
2e23972e JW |
5744 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5745 | && current_ts.u.derived->components == NULL | |
bc21d315 | 5746 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
5747 | { |
5748 | ||
f6288c24 | 5749 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
5750 | goto ok; |
5751 | ||
bf9f15ee PT |
5752 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED |
5753 | && current_ts.u.derived == gfc_current_block ()) | |
5754 | goto ok; | |
5755 | ||
bc21d315 | 5756 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 5757 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 5758 | |
976e21f6 | 5759 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
5760 | which has its components defined, or be a structure definition |
5761 | actively being parsed. */ | |
5762 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 5763 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
5764 | || current_ts.u.derived->attr.zero_comp |
5765 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
5766 | goto ok; |
5767 | ||
a1b80ec7 JW |
5768 | gfc_error ("Derived type at %C has not been previously defined " |
5769 | "and so cannot appear in a derived type definition"); | |
5770 | m = MATCH_ERROR; | |
5771 | goto cleanup; | |
6de9cd9a DN |
5772 | } |
5773 | ||
5774 | ok: | |
5775 | /* If we have an old-style character declaration, and no new-style | |
5776 | attribute specifications, then there a comma is optional between | |
5777 | the type specification and the variable list. */ | |
5778 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5779 | gfc_match_char (','); | |
5780 | ||
949d5b72 PT |
5781 | /* Give the types/attributes to symbols that follow. Give the element |
5782 | a number so that repeat character length expressions can be copied. */ | |
5783 | elem = 1; | |
6de9cd9a DN |
5784 | for (;;) |
5785 | { | |
a8b3b0b6 | 5786 | num_idents_on_line++; |
949d5b72 | 5787 | m = variable_decl (elem++); |
6de9cd9a DN |
5788 | if (m == MATCH_ERROR) |
5789 | goto cleanup; | |
5790 | if (m == MATCH_NO) | |
5791 | break; | |
5792 | ||
5793 | if (gfc_match_eos () == MATCH_YES) | |
5794 | goto cleanup; | |
5795 | if (gfc_match_char (',') != MATCH_YES) | |
5796 | break; | |
5797 | } | |
5798 | ||
0f447a6e | 5799 | if (!gfc_error_flag_test ()) |
94903212 FR |
5800 | { |
5801 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5802 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5803 | here to avoid confusing the remaining matchers, even if there was an | |
5804 | error during variable_decl. We must flush any such errors. Note this | |
5805 | causes the parser to gracefully continue parsing the remaining input | |
5806 | as a structure body, which likely follows. */ | |
5807 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5808 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5809 | { | |
5810 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5811 | " at %C"); | |
5812 | /* Skip the bad variable_decl and line up for the start of the | |
5813 | structure body. */ | |
5814 | gfc_error_recovery (); | |
5815 | m = MATCH_YES; | |
5816 | goto cleanup; | |
5817 | } | |
5818 | ||
5819 | gfc_error ("Syntax error in data declaration at %C"); | |
5820 | } | |
5821 | ||
6de9cd9a DN |
5822 | m = MATCH_ERROR; |
5823 | ||
a9f6f1f2 JD |
5824 | gfc_free_data_all (gfc_current_ns); |
5825 | ||
6de9cd9a | 5826 | cleanup: |
5bab4c96 PT |
5827 | if (saved_kind_expr) |
5828 | gfc_free_expr (saved_kind_expr); | |
5829 | if (type_param_spec_list) | |
5830 | gfc_free_actual_arglist (type_param_spec_list); | |
5831 | if (decl_type_param_list) | |
5832 | gfc_free_actual_arglist (decl_type_param_list); | |
5833 | saved_kind_expr = NULL; | |
6de9cd9a DN |
5834 | gfc_free_array_spec (current_as); |
5835 | current_as = NULL; | |
5836 | return m; | |
5837 | } | |
5838 | ||
5839 | ||
5840 | /* Match a prefix associated with a function or subroutine | |
5841 | declaration. If the typespec pointer is nonnull, then a typespec | |
5842 | can be matched. Note that if nothing matches, MATCH_YES is | |
5843 | returned (the null string was matched). */ | |
5844 | ||
1c8bcdf7 PT |
5845 | match |
5846 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 5847 | { |
7389bce6 | 5848 | bool seen_type; |
e6c14898 DK |
5849 | bool seen_impure; |
5850 | bool found_prefix; | |
6de9cd9a DN |
5851 | |
5852 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
5853 | seen_type = false; |
5854 | seen_impure = false; | |
6de9cd9a | 5855 | |
3df684e2 DK |
5856 | gcc_assert (!gfc_matching_prefix); |
5857 | gfc_matching_prefix = true; | |
f37e928c | 5858 | |
e6c14898 | 5859 | do |
6de9cd9a | 5860 | { |
e6c14898 | 5861 | found_prefix = false; |
6de9cd9a | 5862 | |
70112e2a PT |
5863 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
5864 | corresponding attribute seems natural and distinguishes these | |
5865 | procedures from procedure types of PROC_MODULE, which these are | |
5866 | as well. */ | |
5867 | if (gfc_match ("module% ") == MATCH_YES) | |
5868 | { | |
5869 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
5870 | goto error; | |
5871 | ||
5872 | current_attr.module_procedure = 1; | |
5873 | found_prefix = true; | |
5874 | } | |
5875 | ||
e6c14898 DK |
5876 | if (!seen_type && ts != NULL |
5877 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
5878 | && gfc_match_space () == MATCH_YES) | |
5879 | { | |
6de9cd9a | 5880 | |
e6c14898 DK |
5881 | seen_type = true; |
5882 | found_prefix = true; | |
5883 | } | |
5884 | ||
5885 | if (gfc_match ("elemental% ") == MATCH_YES) | |
5886 | { | |
524af0d6 | 5887 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
5888 | goto error; |
5889 | ||
5890 | found_prefix = true; | |
5891 | } | |
5892 | ||
5893 | if (gfc_match ("pure% ") == MATCH_YES) | |
5894 | { | |
524af0d6 | 5895 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
5896 | goto error; |
5897 | ||
5898 | found_prefix = true; | |
5899 | } | |
6de9cd9a | 5900 | |
e6c14898 DK |
5901 | if (gfc_match ("recursive% ") == MATCH_YES) |
5902 | { | |
524af0d6 | 5903 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
5904 | goto error; |
5905 | ||
5906 | found_prefix = true; | |
5907 | } | |
5908 | ||
5909 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
5910 | attribute but rather only prevents ELEMENTAL routines from being | |
5911 | automatically PURE. */ | |
5912 | if (gfc_match ("impure% ") == MATCH_YES) | |
5913 | { | |
524af0d6 | 5914 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
5915 | goto error; |
5916 | ||
5917 | seen_impure = true; | |
5918 | found_prefix = true; | |
5919 | } | |
6de9cd9a | 5920 | } |
e6c14898 | 5921 | while (found_prefix); |
6de9cd9a | 5922 | |
e6c14898 DK |
5923 | /* IMPURE and PURE must not both appear, of course. */ |
5924 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 5925 | { |
e6c14898 DK |
5926 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
5927 | goto error; | |
6de9cd9a DN |
5928 | } |
5929 | ||
e6c14898 DK |
5930 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
5931 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 5932 | { |
524af0d6 | 5933 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 5934 | goto error; |
6de9cd9a DN |
5935 | } |
5936 | ||
5937 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 5938 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 5939 | |
3df684e2 | 5940 | gfc_matching_prefix = false; |
6de9cd9a | 5941 | return MATCH_YES; |
f37e928c DK |
5942 | |
5943 | error: | |
3df684e2 DK |
5944 | gcc_assert (gfc_matching_prefix); |
5945 | gfc_matching_prefix = false; | |
f37e928c | 5946 | return MATCH_ERROR; |
6de9cd9a DN |
5947 | } |
5948 | ||
5949 | ||
1c8bcdf7 | 5950 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 5951 | |
524af0d6 | 5952 | static bool |
636dff67 | 5953 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 5954 | { |
6442a6f4 PT |
5955 | if (dest->module_procedure) |
5956 | { | |
5957 | if (current_attr.elemental) | |
5958 | dest->elemental = 1; | |
5959 | ||
5960 | if (current_attr.pure) | |
5961 | dest->pure = 1; | |
5962 | ||
5963 | if (current_attr.recursive) | |
5964 | dest->recursive = 1; | |
5965 | ||
5966 | /* Module procedures are unusual in that the 'dest' is copied from | |
5967 | the interface declaration. However, this is an oportunity to | |
5968 | check that the submodule declaration is compliant with the | |
5969 | interface. */ | |
5970 | if (dest->elemental && !current_attr.elemental) | |
5971 | { | |
5972 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
5973 | "missing at %L", where); | |
5974 | return false; | |
5975 | } | |
5976 | ||
5977 | if (dest->pure && !current_attr.pure) | |
5978 | { | |
5979 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
5980 | "missing at %L", where); | |
5981 | return false; | |
5982 | } | |
5983 | ||
5984 | if (dest->recursive && !current_attr.recursive) | |
5985 | { | |
5986 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
5987 | "missing at %L", where); | |
5988 | return false; | |
5989 | } | |
5990 | ||
5991 | return true; | |
5992 | } | |
6de9cd9a | 5993 | |
524af0d6 JB |
5994 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
5995 | return false; | |
6de9cd9a | 5996 | |
6442a6f4 PT |
5997 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
5998 | return false; | |
5999 | ||
524af0d6 JB |
6000 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6001 | return false; | |
6de9cd9a | 6002 | |
524af0d6 | 6003 | return true; |
6de9cd9a DN |
6004 | } |
6005 | ||
6006 | ||
5bab4c96 PT |
6007 | /* Match a formal argument list or, if typeparam is true, a |
6008 | type_param_name_list. */ | |
6de9cd9a DN |
6009 | |
6010 | match | |
5bab4c96 PT |
6011 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6012 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6013 | { |
6014 | gfc_formal_arglist *head, *tail, *p, *q; | |
6015 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6016 | gfc_symbol *sym; | |
6017 | match m; | |
4668d6f9 | 6018 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6019 | |
6020 | head = tail = NULL; | |
6021 | ||
4668d6f9 PT |
6022 | /* Keep the interface formal argument list and null it so that the |
6023 | matching for the new declaration can be done. The numbers and | |
6024 | names of the arguments are checked here. The interface formal | |
6025 | arguments are retained in formal_arglist and the characteristics | |
6026 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6027 | in get_proc_name about the eventual need to copy the formal_arglist | |
6028 | and populate the formal namespace of the interface symbol. */ | |
6029 | if (progname->attr.module_procedure | |
6030 | && progname->attr.host_assoc) | |
6031 | { | |
6032 | formal = progname->formal; | |
6033 | progname->formal = NULL; | |
6034 | } | |
6035 | ||
6de9cd9a DN |
6036 | if (gfc_match_char ('(') != MATCH_YES) |
6037 | { | |
6038 | if (null_flag) | |
6039 | goto ok; | |
6040 | return MATCH_NO; | |
6041 | } | |
6042 | ||
6043 | if (gfc_match_char (')') == MATCH_YES) | |
6044 | goto ok; | |
6045 | ||
6046 | for (;;) | |
6047 | { | |
6048 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6049 | { |
6050 | sym = NULL; | |
276515e6 PT |
6051 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6052 | "Alternate-return argument at %C")) | |
9362a03b JW |
6053 | { |
6054 | m = MATCH_ERROR; | |
6055 | goto cleanup; | |
6056 | } | |
276515e6 PT |
6057 | else if (typeparam) |
6058 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6059 | } |
6de9cd9a DN |
6060 | else |
6061 | { | |
6062 | m = gfc_match_name (name); | |
6063 | if (m != MATCH_YES) | |
276515e6 PT |
6064 | { |
6065 | if(typeparam) | |
6066 | gfc_error_now ("A parameter name is required at %C"); | |
6067 | goto cleanup; | |
6068 | } | |
6de9cd9a | 6069 | |
5bab4c96 PT |
6070 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6071 | goto cleanup; | |
6072 | else if (typeparam | |
6073 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6074 | goto cleanup; |
6075 | } | |
6076 | ||
6077 | p = gfc_get_formal_arglist (); | |
6078 | ||
6079 | if (head == NULL) | |
6080 | head = tail = p; | |
6081 | else | |
6082 | { | |
6083 | tail->next = p; | |
6084 | tail = p; | |
6085 | } | |
6086 | ||
6087 | tail->sym = sym; | |
6088 | ||
6089 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6090 | dummy procedure. We don't apply these attributes to formal |
6091 | arguments of statement functions. */ | |
6de9cd9a | 6092 | if (sym != NULL && !st_flag |
524af0d6 JB |
6093 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6094 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6095 | { |
6096 | m = MATCH_ERROR; | |
6097 | goto cleanup; | |
6098 | } | |
6099 | ||
6100 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6101 | so check for it explicitly. After the statement is accepted, |
6102 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6103 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6104 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6105 | { | |
c4100eae | 6106 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6107 | sym->name); |
6108 | m = MATCH_ERROR; | |
6109 | goto cleanup; | |
6110 | } | |
6111 | ||
6112 | if (gfc_match_char (')') == MATCH_YES) | |
6113 | goto ok; | |
6114 | ||
6115 | m = gfc_match_char (','); | |
6116 | if (m != MATCH_YES) | |
6117 | { | |
de624bee PT |
6118 | if (typeparam) |
6119 | gfc_error_now ("Expected parameter list in type declaration " | |
6120 | "at %C"); | |
6121 | else | |
6122 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6123 | goto cleanup; |
6124 | } | |
6125 | } | |
6126 | ||
6127 | ok: | |
6128 | /* Check for duplicate symbols in the formal argument list. */ | |
6129 | if (head != NULL) | |
6130 | { | |
6131 | for (p = head; p->next; p = p->next) | |
6132 | { | |
6133 | if (p->sym == NULL) | |
6134 | continue; | |
6135 | ||
6136 | for (q = p->next; q; q = q->next) | |
6137 | if (p->sym == q->sym) | |
6138 | { | |
de624bee PT |
6139 | if (typeparam) |
6140 | gfc_error_now ("Duplicate name %qs in parameter " | |
6141 | "list at %C", p->sym->name); | |
6142 | else | |
6143 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6144 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6145 | |
6146 | m = MATCH_ERROR; | |
6147 | goto cleanup; | |
6148 | } | |
6149 | } | |
6150 | } | |
6151 | ||
524af0d6 | 6152 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6153 | { |
6154 | m = MATCH_ERROR; | |
6155 | goto cleanup; | |
6156 | } | |
6157 | ||
e9d9b48d PT |
6158 | /* gfc_error_now used in following and return with MATCH_YES because |
6159 | doing otherwise results in a cascade of extraneous errors and in | |
6160 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6161 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6162 | { |
0ef5fbc1 PT |
6163 | bool arg_count_mismatch = false; |
6164 | ||
6165 | if (!formal && head) | |
6166 | arg_count_mismatch = true; | |
6167 | ||
6168 | /* Abbreviated module procedure declaration is not meant to have any | |
6169 | formal arguments! */ | |
e9d9b48d | 6170 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6171 | arg_count_mismatch = true; |
6172 | ||
4668d6f9 PT |
6173 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6174 | { | |
6175 | if ((p->next != NULL && q->next == NULL) | |
6176 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6177 | arg_count_mismatch = true; |
4668d6f9 PT |
6178 | else if ((p->sym == NULL && q->sym == NULL) |
6179 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6180 | continue; | |
6181 | else | |
6182 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6183 | "argument names (%s/%s) at %C", | |
6184 | p->sym->name, q->sym->name); | |
6185 | } | |
0ef5fbc1 PT |
6186 | |
6187 | if (arg_count_mismatch) | |
6188 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6189 | "formal arguments at %C"); | |
4668d6f9 PT |
6190 | } |
6191 | ||
6de9cd9a DN |
6192 | return MATCH_YES; |
6193 | ||
6194 | cleanup: | |
6195 | gfc_free_formal_arglist (head); | |
6196 | return m; | |
6197 | } | |
6198 | ||
6199 | ||
6200 | /* Match a RESULT specification following a function declaration or | |
6201 | ENTRY statement. Also matches the end-of-statement. */ | |
6202 | ||
6203 | static match | |
66e4ab31 | 6204 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6205 | { |
6206 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6207 | gfc_symbol *r; | |
6208 | match m; | |
6209 | ||
6210 | if (gfc_match (" result (") != MATCH_YES) | |
6211 | return MATCH_NO; | |
6212 | ||
6213 | m = gfc_match_name (name); | |
6214 | if (m != MATCH_YES) | |
6215 | return m; | |
6216 | ||
a8b3b0b6 CR |
6217 | /* Get the right paren, and that's it because there could be the |
6218 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6219 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6220 | { |
a8b3b0b6 | 6221 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6222 | return MATCH_ERROR; |
6223 | } | |
6224 | ||
6225 | if (strcmp (function->name, name) == 0) | |
6226 | { | |
636dff67 | 6227 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6228 | return MATCH_ERROR; |
6229 | } | |
6230 | ||
6231 | if (gfc_get_symbol (name, NULL, &r)) | |
6232 | return MATCH_ERROR; | |
6233 | ||
524af0d6 | 6234 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6235 | return MATCH_ERROR; |
6236 | ||
6237 | *result = r; | |
6238 | ||
6239 | return MATCH_YES; | |
6240 | } | |
6241 | ||
6242 | ||
a8b3b0b6 CR |
6243 | /* Match a function suffix, which could be a combination of a result |
6244 | clause and BIND(C), either one, or neither. The draft does not | |
6245 | require them to come in a specific order. */ | |
6246 | ||
6247 | match | |
6248 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6249 | { | |
6250 | match is_bind_c; /* Found bind(c). */ | |
6251 | match is_result; /* Found result clause. */ | |
6252 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6253 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6254 | bool allow_binding_name; |
a8b3b0b6 CR |
6255 | |
6256 | /* Initialize to having found nothing. */ | |
6257 | found_match = MATCH_NO; | |
f5acf0f2 | 6258 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6259 | is_result = MATCH_NO; |
6260 | ||
6261 | /* Get the next char to narrow between result and bind(c). */ | |
6262 | gfc_gobble_whitespace (); | |
8fc541d3 | 6263 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6264 | |
1eabf70a TB |
6265 | /* C binding names are not allowed for internal procedures. */ |
6266 | if (gfc_current_state () == COMP_CONTAINS | |
6267 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6268 | allow_binding_name = false; | |
6269 | else | |
6270 | allow_binding_name = true; | |
6271 | ||
a8b3b0b6 CR |
6272 | switch (peek_char) |
6273 | { | |
6274 | case 'r': | |
6275 | /* Look for result clause. */ | |
6276 | is_result = match_result (sym, result); | |
6277 | if (is_result == MATCH_YES) | |
6278 | { | |
6279 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6280 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6281 | /* We've found the result clause and possibly bind(c). */ |
6282 | found_match = MATCH_YES; | |
6283 | } | |
6284 | else | |
6285 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6286 | found_match = is_result; |
a8b3b0b6 CR |
6287 | break; |
6288 | case 'b': | |
6289 | /* Look for bind(c) first. */ | |
1eabf70a | 6290 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6291 | if (is_bind_c == MATCH_YES) |
6292 | { | |
6293 | /* Now see if a result clause followed it. */ | |
6294 | is_result = match_result (sym, result); | |
6295 | found_match = MATCH_YES; | |
6296 | } | |
6297 | else | |
6298 | { | |
6299 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6300 | found_match = MATCH_ERROR; | |
6301 | } | |
6302 | break; | |
6303 | default: | |
6304 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6305 | found_match = MATCH_ERROR; | |
6306 | break; | |
6307 | } | |
6308 | ||
a8b3b0b6 | 6309 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6310 | { |
1eabf70a | 6311 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6312 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6313 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6314 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6315 | "at %L may not be specified for an internal " | |
6316 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6317 | return MATCH_ERROR; |
6318 | ||
524af0d6 | 6319 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6320 | return MATCH_ERROR; |
6321 | } | |
f5acf0f2 | 6322 | |
a8b3b0b6 CR |
6323 | return found_match; |
6324 | } | |
6325 | ||
6326 | ||
3070bab4 JW |
6327 | /* Procedure pointer return value without RESULT statement: |
6328 | Add "hidden" result variable named "ppr@". */ | |
6329 | ||
524af0d6 | 6330 | static bool |
3070bab4 JW |
6331 | add_hidden_procptr_result (gfc_symbol *sym) |
6332 | { | |
6333 | bool case1,case2; | |
6334 | ||
6335 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6336 | return false; |
3070bab4 JW |
6337 | |
6338 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6339 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6340 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6341 | && sym->attr.external; | |
6342 | /* Second usage case: INTERFACE statements. */ | |
6343 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6344 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6345 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6346 | ||
6347 | if (case1 || case2) | |
6348 | { | |
6349 | gfc_symtree *stree; | |
6350 | if (case1) | |
08a6b8e0 | 6351 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 6352 | else if (case2) |
c73b6478 JW |
6353 | { |
6354 | gfc_symtree *st2; | |
08a6b8e0 | 6355 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6356 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6357 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6358 | stree->n.sym->refs++; |
c73b6478 | 6359 | } |
3070bab4 JW |
6360 | sym->result = stree->n.sym; |
6361 | ||
6362 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6363 | sym->result->attr.pointer = sym->attr.pointer; | |
6364 | sym->result->attr.external = sym->attr.external; | |
6365 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6366 | sym->result->ts = sym->ts; |
3070bab4 JW |
6367 | sym->attr.proc_pointer = 0; |
6368 | sym->attr.pointer = 0; | |
6369 | sym->attr.external = 0; | |
6370 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6371 | { | |
6372 | sym->result->attr.pointer = 0; | |
6373 | sym->result->attr.proc_pointer = 1; | |
6374 | } | |
6375 | ||
6376 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6377 | } | |
6378 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6379 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6380 | && sym->result && sym->result != sym && sym->result->attr.external | |
6381 | && sym == gfc_current_ns->proc_name | |
6382 | && sym == sym->result->ns->proc_name | |
6383 | && strcmp ("ppr@", sym->result->name) == 0) | |
6384 | { | |
6385 | sym->result->attr.proc_pointer = 1; | |
6386 | sym->attr.pointer = 0; | |
524af0d6 | 6387 | return true; |
3070bab4 JW |
6388 | } |
6389 | else | |
524af0d6 | 6390 | return false; |
3070bab4 JW |
6391 | } |
6392 | ||
6393 | ||
713485cc JW |
6394 | /* Match the interface for a PROCEDURE declaration, |
6395 | including brackets (R1212). */ | |
69773742 JW |
6396 | |
6397 | static match | |
713485cc | 6398 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6399 | { |
6400 | match m; | |
3276e0b3 | 6401 | gfc_symtree *st; |
69773742 | 6402 | locus old_loc, entry_loc; |
3276e0b3 PT |
6403 | gfc_namespace *old_ns = gfc_current_ns; |
6404 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6405 | |
3276e0b3 | 6406 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6407 | gfc_clear_ts (¤t_ts); |
6408 | ||
6409 | if (gfc_match (" (") != MATCH_YES) | |
6410 | { | |
6411 | gfc_current_locus = entry_loc; | |
6412 | return MATCH_NO; | |
6413 | } | |
6414 | ||
6415 | /* Get the type spec. for the procedure interface. */ | |
6416 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6417 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6418 | gfc_gobble_whitespace (); |
8fc541d3 | 6419 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6420 | goto got_ts; |
6421 | ||
6422 | if (m == MATCH_ERROR) | |
6423 | return m; | |
6424 | ||
3276e0b3 | 6425 | /* Procedure interface is itself a procedure. */ |
69773742 | 6426 | gfc_current_locus = old_loc; |
3276e0b3 | 6427 | m = gfc_match_name (name); |
69773742 | 6428 | |
3276e0b3 PT |
6429 | /* First look to see if it is already accessible in the current |
6430 | namespace because it is use associated or contained. */ | |
6431 | st = NULL; | |
6432 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6433 | return MATCH_ERROR; | |
6434 | ||
6435 | /* If it is still not found, then try the parent namespace, if it | |
6436 | exists and create the symbol there if it is still not found. */ | |
6437 | if (gfc_current_ns->parent) | |
6438 | gfc_current_ns = gfc_current_ns->parent; | |
6439 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6440 | return MATCH_ERROR; | |
6441 | ||
6442 | gfc_current_ns = old_ns; | |
6443 | *proc_if = st->n.sym; | |
69773742 | 6444 | |
713485cc | 6445 | if (*proc_if) |
69773742 | 6446 | { |
713485cc | 6447 | (*proc_if)->refs++; |
bb343a6c TB |
6448 | /* Resolve interface if possible. That way, attr.procedure is only set |
6449 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6450 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6451 | while ((*proc_if)->ts.interface |
6452 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6453 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6454 | |
0e8d854e JW |
6455 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6456 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6457 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6458 | (*proc_if)->name, NULL)) |
0e8d854e | 6459 | return MATCH_ERROR; |
69773742 JW |
6460 | } |
6461 | ||
6462 | got_ts: | |
69773742 JW |
6463 | if (gfc_match (" )") != MATCH_YES) |
6464 | { | |
6465 | gfc_current_locus = entry_loc; | |
6466 | return MATCH_NO; | |
6467 | } | |
6468 | ||
713485cc JW |
6469 | return MATCH_YES; |
6470 | } | |
6471 | ||
6472 | ||
6473 | /* Match a PROCEDURE declaration (R1211). */ | |
6474 | ||
6475 | static match | |
6476 | match_procedure_decl (void) | |
6477 | { | |
6478 | match m; | |
6479 | gfc_symbol *sym, *proc_if = NULL; | |
6480 | int num; | |
6481 | gfc_expr *initializer = NULL; | |
6482 | ||
1cc0e193 | 6483 | /* Parse interface (with brackets). */ |
713485cc JW |
6484 | m = match_procedure_interface (&proc_if); |
6485 | if (m != MATCH_YES) | |
6486 | return m; | |
6487 | ||
6488 | /* Parse attributes (with colons). */ | |
69773742 JW |
6489 | m = match_attr_spec(); |
6490 | if (m == MATCH_ERROR) | |
6491 | return MATCH_ERROR; | |
6492 | ||
0859be17 TB |
6493 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6494 | { | |
6495 | current_attr.is_bind_c = 1; | |
6496 | has_name_equals = 0; | |
6497 | curr_binding_label = NULL; | |
6498 | } | |
6499 | ||
69773742 JW |
6500 | /* Get procedure symbols. */ |
6501 | for(num=1;;num++) | |
6502 | { | |
69773742 JW |
6503 | m = gfc_match_symbol (&sym, 0); |
6504 | if (m == MATCH_NO) | |
6505 | goto syntax; | |
6506 | else if (m == MATCH_ERROR) | |
6507 | return m; | |
6508 | ||
6509 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6510 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6511 | return MATCH_ERROR; |
6512 | ||
6513 | if (sym->attr.is_bind_c) | |
6514 | { | |
6515 | /* Check for C1218. */ | |
6516 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6517 | { | |
6518 | gfc_error ("BIND(C) attribute at %C requires " | |
6519 | "an interface with BIND(C)"); | |
6520 | return MATCH_ERROR; | |
6521 | } | |
6522 | /* Check for C1217. */ | |
6523 | if (has_name_equals && sym->attr.pointer) | |
6524 | { | |
6525 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6526 | "POINTER attribute at %C"); | |
6527 | return MATCH_ERROR; | |
6528 | } | |
6529 | if (has_name_equals && sym->attr.dummy) | |
6530 | { | |
6531 | gfc_error ("Dummy procedure at %C may not have " | |
6532 | "BIND(C) attribute with NAME"); | |
6533 | return MATCH_ERROR; | |
6534 | } | |
6535 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6536 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6537 | return MATCH_ERROR; |
6538 | } | |
6539 | ||
524af0d6 | 6540 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6541 | return MATCH_ERROR; |
3070bab4 | 6542 | |
524af0d6 | 6543 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6544 | sym = sym->result; |
6545 | ||
524af0d6 | 6546 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6547 | return MATCH_ERROR; |
6548 | ||
6549 | /* Set interface. */ | |
6550 | if (proc_if != NULL) | |
6cc309c9 | 6551 | { |
1d146030 JW |
6552 | if (sym->ts.type != BT_UNKNOWN) |
6553 | { | |
c4100eae | 6554 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6555 | sym->name, &gfc_current_locus, |
6556 | gfc_basic_typename (sym->ts.type)); | |
6557 | return MATCH_ERROR; | |
6558 | } | |
32d99e68 | 6559 | sym->ts.interface = proc_if; |
6cc309c9 | 6560 | sym->attr.untyped = 1; |
c73b6478 | 6561 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6562 | } |
69773742 JW |
6563 | else if (current_ts.type != BT_UNKNOWN) |
6564 | { | |
524af0d6 | 6565 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6566 | return MATCH_ERROR; |
32d99e68 JW |
6567 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6568 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6569 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6570 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6571 | sym->attr.function = 1; |
c73b6478 | 6572 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6573 | } |
6574 | ||
8fb74da4 JW |
6575 | if (gfc_match (" =>") == MATCH_YES) |
6576 | { | |
6577 | if (!current_attr.pointer) | |
6578 | { | |
6579 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6580 | m = MATCH_ERROR; | |
6581 | goto cleanup; | |
6582 | } | |
6583 | ||
80f95228 | 6584 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6585 | if (m != MATCH_YES) |
6586 | goto cleanup; | |
6587 | ||
524af0d6 | 6588 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6589 | goto cleanup; |
6590 | ||
6591 | } | |
6592 | ||
69773742 JW |
6593 | if (gfc_match_eos () == MATCH_YES) |
6594 | return MATCH_YES; | |
6595 | if (gfc_match_char (',') != MATCH_YES) | |
6596 | goto syntax; | |
6597 | } | |
6598 | ||
6599 | syntax: | |
6600 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6601 | return MATCH_ERROR; | |
8fb74da4 JW |
6602 | |
6603 | cleanup: | |
6604 | /* Free stuff up and return. */ | |
6605 | gfc_free_expr (initializer); | |
6606 | return m; | |
69773742 JW |
6607 | } |
6608 | ||
6609 | ||
713485cc JW |
6610 | static match |
6611 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6612 | ||
6613 | ||
6614 | /* Match a procedure pointer component declaration (R445). */ | |
6615 | ||
6616 | static match | |
6617 | match_ppc_decl (void) | |
6618 | { | |
6619 | match m; | |
6620 | gfc_symbol *proc_if = NULL; | |
6621 | gfc_typespec ts; | |
6622 | int num; | |
6623 | gfc_component *c; | |
6624 | gfc_expr *initializer = NULL; | |
6625 | gfc_typebound_proc* tb; | |
6626 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6627 | ||
6628 | /* Parse interface (with brackets). */ | |
6629 | m = match_procedure_interface (&proc_if); | |
6630 | if (m != MATCH_YES) | |
6631 | goto syntax; | |
6632 | ||
6633 | /* Parse attributes. */ | |
6634 | tb = XCNEW (gfc_typebound_proc); | |
6635 | tb->where = gfc_current_locus; | |
6636 | m = match_binding_attributes (tb, false, true); | |
6637 | if (m == MATCH_ERROR) | |
6638 | return m; | |
6639 | ||
713485cc JW |
6640 | gfc_clear_attr (¤t_attr); |
6641 | current_attr.procedure = 1; | |
6642 | current_attr.proc_pointer = 1; | |
6643 | current_attr.access = tb->access; | |
6644 | current_attr.flavor = FL_PROCEDURE; | |
6645 | ||
6646 | /* Match the colons (required). */ | |
6647 | if (gfc_match (" ::") != MATCH_YES) | |
6648 | { | |
a4d9b221 | 6649 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6650 | return MATCH_ERROR; |
6651 | } | |
6652 | ||
6653 | /* Check for C450. */ | |
6654 | if (!tb->nopass && proc_if == NULL) | |
6655 | { | |
6656 | gfc_error("NOPASS or explicit interface required at %C"); | |
6657 | return MATCH_ERROR; | |
6658 | } | |
6659 | ||
524af0d6 | 6660 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6661 | return MATCH_ERROR; |
6662 | ||
713485cc JW |
6663 | /* Match PPC names. */ |
6664 | ts = current_ts; | |
6665 | for(num=1;;num++) | |
6666 | { | |
6667 | m = gfc_match_name (name); | |
6668 | if (m == MATCH_NO) | |
6669 | goto syntax; | |
6670 | else if (m == MATCH_ERROR) | |
6671 | return m; | |
6672 | ||
524af0d6 | 6673 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6674 | return MATCH_ERROR; |
6675 | ||
6676 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6677 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6678 | return MATCH_ERROR; |
6679 | ||
524af0d6 | 6680 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6681 | return MATCH_ERROR; |
6682 | ||
524af0d6 | 6683 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6684 | return MATCH_ERROR; |
6685 | ||
2be03814 TB |
6686 | if (num == 1) |
6687 | c->tb = tb; | |
6688 | else | |
6689 | { | |
6690 | c->tb = XCNEW (gfc_typebound_proc); | |
6691 | c->tb->where = gfc_current_locus; | |
6692 | *c->tb = *tb; | |
6693 | } | |
90661f26 | 6694 | |
713485cc JW |
6695 | /* Set interface. */ |
6696 | if (proc_if != NULL) | |
6697 | { | |
6698 | c->ts.interface = proc_if; | |
6699 | c->attr.untyped = 1; | |
6700 | c->attr.if_source = IFSRC_IFBODY; | |
6701 | } | |
6702 | else if (ts.type != BT_UNKNOWN) | |
6703 | { | |
6704 | c->ts = ts; | |
6705 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 6706 | c->ts.interface->result = c->ts.interface; |
713485cc | 6707 | c->ts.interface->ts = ts; |
d91909c0 | 6708 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 6709 | c->ts.interface->attr.function = 1; |
d91909c0 | 6710 | c->attr.function = 1; |
713485cc JW |
6711 | c->attr.if_source = IFSRC_UNKNOWN; |
6712 | } | |
6713 | ||
6714 | if (gfc_match (" =>") == MATCH_YES) | |
6715 | { | |
80f95228 | 6716 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
6717 | if (m != MATCH_YES) |
6718 | { | |
6719 | gfc_free_expr (initializer); | |
6720 | return m; | |
6721 | } | |
6722 | c->initializer = initializer; | |
6723 | } | |
6724 | ||
6725 | if (gfc_match_eos () == MATCH_YES) | |
6726 | return MATCH_YES; | |
6727 | if (gfc_match_char (',') != MATCH_YES) | |
6728 | goto syntax; | |
6729 | } | |
6730 | ||
6731 | syntax: | |
6732 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6733 | return MATCH_ERROR; | |
6734 | } | |
6735 | ||
6736 | ||
69773742 JW |
6737 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6738 | ||
6739 | static match | |
6740 | match_procedure_in_interface (void) | |
6741 | { | |
6742 | match m; | |
6743 | gfc_symbol *sym; | |
6744 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 6745 | locus old_locus; |
69773742 JW |
6746 | |
6747 | if (current_interface.type == INTERFACE_NAMELESS | |
6748 | || current_interface.type == INTERFACE_ABSTRACT) | |
6749 | { | |
6750 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6751 | return MATCH_ERROR; | |
6752 | } | |
6753 | ||
a6fcd41a TB |
6754 | /* Check if the F2008 optional double colon appears. */ |
6755 | gfc_gobble_whitespace (); | |
6756 | old_locus = gfc_current_locus; | |
6757 | if (gfc_match ("::") == MATCH_YES) | |
6758 | { | |
524af0d6 JB |
6759 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6760 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
6761 | return MATCH_ERROR; |
6762 | } | |
6763 | else | |
6764 | gfc_current_locus = old_locus; | |
6765 | ||
69773742 JW |
6766 | for(;;) |
6767 | { | |
6768 | m = gfc_match_name (name); | |
6769 | if (m == MATCH_NO) | |
6770 | goto syntax; | |
6771 | else if (m == MATCH_ERROR) | |
6772 | return m; | |
6773 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6774 | return MATCH_ERROR; | |
6775 | ||
524af0d6 | 6776 | if (!gfc_add_interface (sym)) |
69773742 JW |
6777 | return MATCH_ERROR; |
6778 | ||
69773742 JW |
6779 | if (gfc_match_eos () == MATCH_YES) |
6780 | break; | |
6781 | if (gfc_match_char (',') != MATCH_YES) | |
6782 | goto syntax; | |
6783 | } | |
6784 | ||
6785 | return MATCH_YES; | |
6786 | ||
6787 | syntax: | |
6788 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6789 | return MATCH_ERROR; | |
6790 | } | |
6791 | ||
6792 | ||
6793 | /* General matcher for PROCEDURE declarations. */ | |
6794 | ||
30b608eb DK |
6795 | static match match_procedure_in_type (void); |
6796 | ||
69773742 JW |
6797 | match |
6798 | gfc_match_procedure (void) | |
6799 | { | |
6800 | match m; | |
6801 | ||
6802 | switch (gfc_current_state ()) | |
6803 | { | |
6804 | case COMP_NONE: | |
6805 | case COMP_PROGRAM: | |
6806 | case COMP_MODULE: | |
4668d6f9 | 6807 | case COMP_SUBMODULE: |
69773742 JW |
6808 | case COMP_SUBROUTINE: |
6809 | case COMP_FUNCTION: | |
3547d57e | 6810 | case COMP_BLOCK: |
69773742 JW |
6811 | m = match_procedure_decl (); |
6812 | break; | |
6813 | case COMP_INTERFACE: | |
6814 | m = match_procedure_in_interface (); | |
6815 | break; | |
6816 | case COMP_DERIVED: | |
713485cc JW |
6817 | m = match_ppc_decl (); |
6818 | break; | |
30b608eb DK |
6819 | case COMP_DERIVED_CONTAINS: |
6820 | m = match_procedure_in_type (); | |
6821 | break; | |
69773742 JW |
6822 | default: |
6823 | return MATCH_NO; | |
6824 | } | |
6825 | ||
6826 | if (m != MATCH_YES) | |
6827 | return m; | |
6828 | ||
524af0d6 | 6829 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
6830 | return MATCH_ERROR; |
6831 | ||
6832 | return m; | |
6833 | } | |
6834 | ||
6835 | ||
c3005b0f DK |
6836 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
6837 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
6838 | parser-state-stack to find out whether we're in a module. */ | |
6839 | ||
6840 | static void | |
73e42eef | 6841 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
6842 | { |
6843 | bool in_module; | |
6844 | ||
6845 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
6846 | && (gfc_state_stack->previous->state == COMP_MODULE |
6847 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
6848 | |
6849 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
6850 | } | |
6851 | ||
6852 | ||
6de9cd9a DN |
6853 | /* Match a function declaration. */ |
6854 | ||
6855 | match | |
6856 | gfc_match_function_decl (void) | |
6857 | { | |
6858 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6859 | gfc_symbol *sym, *result; | |
6860 | locus old_loc; | |
6861 | match m; | |
a8b3b0b6 | 6862 | match suffix_match; |
f5acf0f2 | 6863 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
6864 | |
6865 | if (gfc_current_state () != COMP_NONE | |
6866 | && gfc_current_state () != COMP_INTERFACE | |
6867 | && gfc_current_state () != COMP_CONTAINS) | |
6868 | return MATCH_NO; | |
6869 | ||
6870 | gfc_clear_ts (¤t_ts); | |
6871 | ||
63645982 | 6872 | old_loc = gfc_current_locus; |
6de9cd9a | 6873 | |
1c8bcdf7 | 6874 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
6875 | if (m != MATCH_YES) |
6876 | { | |
63645982 | 6877 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6878 | return m; |
6879 | } | |
6880 | ||
6881 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
6882 | { | |
63645982 | 6883 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6884 | return MATCH_NO; |
6885 | } | |
4668d6f9 | 6886 | |
1a492601 | 6887 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 6888 | return MATCH_ERROR; |
3070bab4 | 6889 | |
524af0d6 | 6890 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6891 | sym = sym->result; |
6892 | ||
4668d6f9 PT |
6893 | if (current_attr.module_procedure) |
6894 | sym->attr.module_procedure = 1; | |
6895 | ||
6de9cd9a DN |
6896 | gfc_new_block = sym; |
6897 | ||
6898 | m = gfc_match_formal_arglist (sym, 0, 0); | |
6899 | if (m == MATCH_NO) | |
2b9a33ae TS |
6900 | { |
6901 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 6902 | "definition at %C"); |
2b9a33ae TS |
6903 | m = MATCH_ERROR; |
6904 | goto cleanup; | |
6905 | } | |
6de9cd9a DN |
6906 | else if (m == MATCH_ERROR) |
6907 | goto cleanup; | |
6908 | ||
6909 | result = NULL; | |
6910 | ||
a8b3b0b6 CR |
6911 | /* According to the draft, the bind(c) and result clause can |
6912 | come in either order after the formal_arg_list (i.e., either | |
6913 | can be first, both can exist together or by themselves or neither | |
6914 | one). Therefore, the match_result can't match the end of the | |
6915 | string, and check for the bind(c) or result clause in either order. */ | |
6916 | found_match = gfc_match_eos (); | |
6917 | ||
6918 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
6919 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6920 | not allowed for procedures. */ | |
6921 | if (sym->attr.is_bind_c == 1) | |
6922 | { | |
6923 | sym->attr.is_bind_c = 0; | |
6924 | if (sym->old_symbol != NULL) | |
6925 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6926 | "variables or common blocks", | |
6927 | &(sym->old_symbol->declared_at)); | |
6928 | else | |
6929 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6930 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
6931 | } |
6932 | ||
a8b3b0b6 | 6933 | if (found_match != MATCH_YES) |
6de9cd9a | 6934 | { |
a8b3b0b6 CR |
6935 | /* If we haven't found the end-of-statement, look for a suffix. */ |
6936 | suffix_match = gfc_match_suffix (sym, &result); | |
6937 | if (suffix_match == MATCH_YES) | |
6938 | /* Need to get the eos now. */ | |
6939 | found_match = gfc_match_eos (); | |
6940 | else | |
6941 | found_match = suffix_match; | |
6de9cd9a DN |
6942 | } |
6943 | ||
a8b3b0b6 CR |
6944 | if(found_match != MATCH_YES) |
6945 | m = MATCH_ERROR; | |
6de9cd9a DN |
6946 | else |
6947 | { | |
a8b3b0b6 CR |
6948 | /* Make changes to the symbol. */ |
6949 | m = MATCH_ERROR; | |
f5acf0f2 | 6950 | |
524af0d6 | 6951 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 6952 | goto cleanup; |
f5acf0f2 | 6953 | |
70112e2a | 6954 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 6955 | goto cleanup; |
6de9cd9a | 6956 | |
70112e2a PT |
6957 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6958 | { | |
6959 | if(!sym->attr.module_procedure) | |
6960 | goto cleanup; | |
6961 | else | |
6962 | gfc_error_check (); | |
6963 | } | |
6964 | ||
a99d95a2 | 6965 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 6966 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
6967 | sym->declared_at = old_loc; |
6968 | if (current_ts.type != BT_UNKNOWN) | |
6969 | current_ts.kind = -1; | |
6970 | else | |
6971 | current_ts.kind = 0; | |
1c8bcdf7 | 6972 | |
a8b3b0b6 CR |
6973 | if (result == NULL) |
6974 | { | |
6de7294f | 6975 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6976 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6977 | goto cleanup; |
a8b3b0b6 CR |
6978 | sym->result = sym; |
6979 | } | |
6980 | else | |
6981 | { | |
6de7294f | 6982 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6983 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6984 | goto cleanup; |
a8b3b0b6 CR |
6985 | sym->result = result; |
6986 | } | |
6987 | ||
c3005b0f | 6988 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 6989 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 6990 | |
a8b3b0b6 CR |
6991 | return MATCH_YES; |
6992 | } | |
6de9cd9a DN |
6993 | |
6994 | cleanup: | |
63645982 | 6995 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6996 | return m; |
6997 | } | |
6998 | ||
636dff67 SK |
6999 | |
7000 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7001 | pass the name of the entry, rather than the gfc_current_block name, and | |
7002 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7003 | |
7004 | static bool | |
3a43b5b3 TB |
7005 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7006 | locus *where) | |
68ea355b PT |
7007 | { |
7008 | gfc_gsymbol *s; | |
32e8bb8e | 7009 | enum gfc_symbol_type type; |
68ea355b | 7010 | |
7389bce6 | 7011 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7012 | |
f11de7c5 TB |
7013 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7014 | name is a global identifier. */ | |
7015 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7016 | { |
f11de7c5 TB |
7017 | s = gfc_get_gsymbol (name); |
7018 | ||
7019 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7020 | { | |
3a43b5b3 | 7021 | gfc_global_used (s, where); |
f11de7c5 TB |
7022 | return false; |
7023 | } | |
7024 | else | |
7025 | { | |
7026 | s->type = type; | |
77f8682b | 7027 | s->sym_name = name; |
3a43b5b3 | 7028 | s->where = *where; |
f11de7c5 TB |
7029 | s->defined = 1; |
7030 | s->ns = gfc_current_ns; | |
7031 | } | |
68ea355b | 7032 | } |
f11de7c5 TB |
7033 | |
7034 | /* Don't add the symbol multiple times. */ | |
7035 | if (binding_label | |
7036 | && (!gfc_notification_std (GFC_STD_F2008) | |
7037 | || strcmp (name, binding_label) != 0)) | |
7038 | { | |
7039 | s = gfc_get_gsymbol (binding_label); | |
7040 | ||
7041 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7042 | { | |
3a43b5b3 | 7043 | gfc_global_used (s, where); |
f11de7c5 TB |
7044 | return false; |
7045 | } | |
7046 | else | |
7047 | { | |
7048 | s->type = type; | |
77f8682b | 7049 | s->sym_name = name; |
f11de7c5 | 7050 | s->binding_label = binding_label; |
3a43b5b3 | 7051 | s->where = *where; |
f11de7c5 TB |
7052 | s->defined = 1; |
7053 | s->ns = gfc_current_ns; | |
7054 | } | |
7055 | } | |
7056 | ||
7057 | return true; | |
68ea355b | 7058 | } |
6de9cd9a | 7059 | |
636dff67 | 7060 | |
6de9cd9a DN |
7061 | /* Match an ENTRY statement. */ |
7062 | ||
7063 | match | |
7064 | gfc_match_entry (void) | |
7065 | { | |
3d79abbd PB |
7066 | gfc_symbol *proc; |
7067 | gfc_symbol *result; | |
7068 | gfc_symbol *entry; | |
6de9cd9a DN |
7069 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7070 | gfc_compile_state state; | |
7071 | match m; | |
3d79abbd | 7072 | gfc_entry_list *el; |
c96cfa49 | 7073 | locus old_loc; |
1a492601 | 7074 | bool module_procedure; |
bc3e7a8c TB |
7075 | char peek_char; |
7076 | match is_bind_c; | |
6de9cd9a DN |
7077 | |
7078 | m = gfc_match_name (name); | |
7079 | if (m != MATCH_YES) | |
7080 | return m; | |
7081 | ||
524af0d6 | 7082 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7083 | return MATCH_ERROR; |
7084 | ||
3d79abbd | 7085 | state = gfc_current_state (); |
4c93c95a | 7086 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7087 | { |
4c93c95a FXC |
7088 | switch (state) |
7089 | { | |
7090 | case COMP_PROGRAM: | |
7091 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7092 | break; | |
7093 | case COMP_MODULE: | |
7094 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7095 | break; | |
4668d6f9 PT |
7096 | case COMP_SUBMODULE: |
7097 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7098 | break; | |
4c93c95a | 7099 | case COMP_BLOCK_DATA: |
636dff67 SK |
7100 | gfc_error ("ENTRY statement at %C cannot appear within " |
7101 | "a BLOCK DATA"); | |
4c93c95a FXC |
7102 | break; |
7103 | case COMP_INTERFACE: | |
636dff67 SK |
7104 | gfc_error ("ENTRY statement at %C cannot appear within " |
7105 | "an INTERFACE"); | |
4c93c95a | 7106 | break; |
f6288c24 FR |
7107 | case COMP_STRUCTURE: |
7108 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7109 | "a STRUCTURE block"); | |
7110 | break; | |
4c93c95a | 7111 | case COMP_DERIVED: |
636dff67 SK |
7112 | gfc_error ("ENTRY statement at %C cannot appear within " |
7113 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7114 | break; |
7115 | case COMP_IF: | |
636dff67 SK |
7116 | gfc_error ("ENTRY statement at %C cannot appear within " |
7117 | "an IF-THEN block"); | |
4c93c95a FXC |
7118 | break; |
7119 | case COMP_DO: | |
8c6a85e3 | 7120 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7121 | gfc_error ("ENTRY statement at %C cannot appear within " |
7122 | "a DO block"); | |
4c93c95a FXC |
7123 | break; |
7124 | case COMP_SELECT: | |
636dff67 SK |
7125 | gfc_error ("ENTRY statement at %C cannot appear within " |
7126 | "a SELECT block"); | |
4c93c95a FXC |
7127 | break; |
7128 | case COMP_FORALL: | |
636dff67 SK |
7129 | gfc_error ("ENTRY statement at %C cannot appear within " |
7130 | "a FORALL block"); | |
4c93c95a FXC |
7131 | break; |
7132 | case COMP_WHERE: | |
636dff67 SK |
7133 | gfc_error ("ENTRY statement at %C cannot appear within " |
7134 | "a WHERE block"); | |
4c93c95a FXC |
7135 | break; |
7136 | case COMP_CONTAINS: | |
636dff67 SK |
7137 | gfc_error ("ENTRY statement at %C cannot appear within " |
7138 | "a contained subprogram"); | |
4c93c95a FXC |
7139 | break; |
7140 | default: | |
fce523bf | 7141 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7142 | } |
3d79abbd PB |
7143 | return MATCH_ERROR; |
7144 | } | |
7145 | ||
5f0ba745 SK |
7146 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7147 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7148 | { | |
7149 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7150 | return MATCH_ERROR; | |
7151 | } | |
7152 | ||
1a492601 | 7153 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7154 | && gfc_current_ns->parent->proc_name |
7155 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7156 | == FL_MODULE; | |
1a492601 | 7157 | |
3d79abbd PB |
7158 | if (gfc_current_ns->parent != NULL |
7159 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7160 | && !module_procedure) |
3d79abbd PB |
7161 | { |
7162 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7163 | "contained procedure"); | |
7164 | return MATCH_ERROR; | |
7165 | } | |
7166 | ||
1a492601 PT |
7167 | /* Module function entries need special care in get_proc_name |
7168 | because previous references within the function will have | |
7169 | created symbols attached to the current namespace. */ | |
7170 | if (get_proc_name (name, &entry, | |
7171 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7172 | && module_procedure)) |
6de9cd9a DN |
7173 | return MATCH_ERROR; |
7174 | ||
3d79abbd PB |
7175 | proc = gfc_current_block (); |
7176 | ||
bc3e7a8c TB |
7177 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7178 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7179 | not allowed for procedures. */ | |
7180 | if (entry->attr.is_bind_c == 1) | |
7181 | { | |
7182 | entry->attr.is_bind_c = 0; | |
7183 | if (entry->old_symbol != NULL) | |
7184 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7185 | "variables or common blocks", | |
7186 | &(entry->old_symbol->declared_at)); | |
7187 | else | |
7188 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7189 | "variables or common blocks", &gfc_current_locus); | |
7190 | } | |
f5acf0f2 | 7191 | |
bc3e7a8c TB |
7192 | /* Check what next non-whitespace character is so we can tell if there |
7193 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7194 | old_loc = gfc_current_locus; |
bc3e7a8c | 7195 | gfc_gobble_whitespace (); |
8fc541d3 | 7196 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7197 | |
3d79abbd | 7198 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7199 | { |
6de9cd9a DN |
7200 | m = gfc_match_formal_arglist (entry, 0, 1); |
7201 | if (m != MATCH_YES) | |
7202 | return MATCH_ERROR; | |
7203 | ||
1eabf70a TB |
7204 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7205 | never be an internal procedure. */ | |
7206 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7207 | if (is_bind_c == MATCH_ERROR) |
7208 | return MATCH_ERROR; | |
7209 | if (is_bind_c == MATCH_YES) | |
7210 | { | |
7211 | if (peek_char != '(') | |
7212 | { | |
7213 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7214 | return MATCH_ERROR; | |
7215 | } | |
70112e2a | 7216 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 7217 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
7218 | return MATCH_ERROR; |
7219 | } | |
7220 | ||
f11de7c5 | 7221 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7222 | && !add_global_entry (name, entry->binding_label, true, |
7223 | &old_loc)) | |
f11de7c5 TB |
7224 | return MATCH_ERROR; |
7225 | ||
7226 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7227 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7228 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7229 | return MATCH_ERROR; |
3d79abbd PB |
7230 | } |
7231 | else | |
7232 | { | |
c96cfa49 | 7233 | /* An entry in a function. |
636dff67 SK |
7234 | We need to take special care because writing |
7235 | ENTRY f() | |
7236 | as | |
7237 | ENTRY f | |
7238 | is allowed, whereas | |
7239 | ENTRY f() RESULT (r) | |
7240 | can't be written as | |
7241 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7242 | if (gfc_match_eos () == MATCH_YES) |
7243 | { | |
7244 | gfc_current_locus = old_loc; | |
7245 | /* Match the empty argument list, and add the interface to | |
7246 | the symbol. */ | |
7247 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7248 | } | |
7249 | else | |
7250 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7251 | ||
6de9cd9a DN |
7252 | if (m != MATCH_YES) |
7253 | return MATCH_ERROR; | |
7254 | ||
6de9cd9a DN |
7255 | result = NULL; |
7256 | ||
7257 | if (gfc_match_eos () == MATCH_YES) | |
7258 | { | |
524af0d6 JB |
7259 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7260 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7261 | return MATCH_ERROR; |
7262 | ||
d198b59a | 7263 | entry->result = entry; |
6de9cd9a DN |
7264 | } |
7265 | else | |
7266 | { | |
bc3e7a8c | 7267 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7268 | if (m == MATCH_NO) |
7269 | gfc_syntax_error (ST_ENTRY); | |
7270 | if (m != MATCH_YES) | |
7271 | return MATCH_ERROR; | |
7272 | ||
bc3e7a8c TB |
7273 | if (result) |
7274 | { | |
524af0d6 JB |
7275 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7276 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7277 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7278 | return MATCH_ERROR; |
7279 | entry->result = result; | |
7280 | } | |
7281 | else | |
7282 | { | |
524af0d6 JB |
7283 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7284 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7285 | return MATCH_ERROR; |
7286 | entry->result = entry; | |
7287 | } | |
6de9cd9a | 7288 | } |
f11de7c5 TB |
7289 | |
7290 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7291 | && !add_global_entry (name, entry->binding_label, false, |
7292 | &old_loc)) | |
f11de7c5 | 7293 | return MATCH_ERROR; |
6de9cd9a DN |
7294 | } |
7295 | ||
7296 | if (gfc_match_eos () != MATCH_YES) | |
7297 | { | |
7298 | gfc_syntax_error (ST_ENTRY); | |
7299 | return MATCH_ERROR; | |
7300 | } | |
7301 | ||
3d79abbd PB |
7302 | entry->attr.recursive = proc->attr.recursive; |
7303 | entry->attr.elemental = proc->attr.elemental; | |
7304 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7305 | |
3d79abbd PB |
7306 | el = gfc_get_entry_list (); |
7307 | el->sym = entry; | |
7308 | el->next = gfc_current_ns->entries; | |
7309 | gfc_current_ns->entries = el; | |
7310 | if (el->next) | |
7311 | el->id = el->next->id + 1; | |
7312 | else | |
7313 | el->id = 1; | |
6de9cd9a | 7314 | |
3d79abbd PB |
7315 | new_st.op = EXEC_ENTRY; |
7316 | new_st.ext.entry = el; | |
7317 | ||
7318 | return MATCH_YES; | |
6de9cd9a DN |
7319 | } |
7320 | ||
7321 | ||
7322 | /* Match a subroutine statement, including optional prefixes. */ | |
7323 | ||
7324 | match | |
7325 | gfc_match_subroutine (void) | |
7326 | { | |
7327 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7328 | gfc_symbol *sym; | |
7329 | match m; | |
a8b3b0b6 CR |
7330 | match is_bind_c; |
7331 | char peek_char; | |
1eabf70a | 7332 | bool allow_binding_name; |
6de9cd9a DN |
7333 | |
7334 | if (gfc_current_state () != COMP_NONE | |
7335 | && gfc_current_state () != COMP_INTERFACE | |
7336 | && gfc_current_state () != COMP_CONTAINS) | |
7337 | return MATCH_NO; | |
7338 | ||
1c8bcdf7 | 7339 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7340 | if (m != MATCH_YES) |
7341 | return m; | |
7342 | ||
7343 | m = gfc_match ("subroutine% %n", name); | |
7344 | if (m != MATCH_YES) | |
7345 | return m; | |
7346 | ||
1a492601 | 7347 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7348 | return MATCH_ERROR; |
3070bab4 | 7349 | |
7fcd5ad5 | 7350 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7351 | the symbol existed before. */ |
7fcd5ad5 TB |
7352 | sym->declared_at = gfc_current_locus; |
7353 | ||
4668d6f9 PT |
7354 | if (current_attr.module_procedure) |
7355 | sym->attr.module_procedure = 1; | |
7356 | ||
524af0d6 | 7357 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7358 | sym = sym->result; |
7359 | ||
6de9cd9a DN |
7360 | gfc_new_block = sym; |
7361 | ||
a8b3b0b6 | 7362 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7363 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7364 | gfc_gobble_whitespace (); |
8fc541d3 | 7365 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7366 | |
524af0d6 | 7367 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7368 | return MATCH_ERROR; |
7369 | ||
7370 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7371 | return MATCH_ERROR; | |
7372 | ||
a8b3b0b6 CR |
7373 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7374 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7375 | not allowed for procedures. */ | |
7376 | if (sym->attr.is_bind_c == 1) | |
7377 | { | |
7378 | sym->attr.is_bind_c = 0; | |
7379 | if (sym->old_symbol != NULL) | |
7380 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7381 | "variables or common blocks", | |
7382 | &(sym->old_symbol->declared_at)); | |
7383 | else | |
7384 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7385 | "variables or common blocks", &gfc_current_locus); | |
7386 | } | |
1eabf70a TB |
7387 | |
7388 | /* C binding names are not allowed for internal procedures. */ | |
7389 | if (gfc_current_state () == COMP_CONTAINS | |
7390 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7391 | allow_binding_name = false; | |
7392 | else | |
7393 | allow_binding_name = true; | |
7394 | ||
a8b3b0b6 CR |
7395 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7396 | so, then we need to make sure it's all correct. If it doesn't, | |
7397 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 7398 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7399 | if (is_bind_c == MATCH_ERROR) |
7400 | { | |
7401 | /* There was an attempt at the bind(c), but it was wrong. An | |
7402 | error message should have been printed w/in the gfc_match_bind_c | |
7403 | so here we'll just return the MATCH_ERROR. */ | |
7404 | return MATCH_ERROR; | |
7405 | } | |
7406 | ||
7407 | if (is_bind_c == MATCH_YES) | |
7408 | { | |
1eabf70a | 7409 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7410 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7411 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7412 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7413 | "at %L may not be specified for an internal " | |
7414 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7415 | return MATCH_ERROR; |
7416 | ||
a8b3b0b6 CR |
7417 | if (peek_char != '(') |
7418 | { | |
7419 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7420 | return MATCH_ERROR; | |
7421 | } | |
70112e2a | 7422 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 7423 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
7424 | return MATCH_ERROR; |
7425 | } | |
f5acf0f2 | 7426 | |
6de9cd9a DN |
7427 | if (gfc_match_eos () != MATCH_YES) |
7428 | { | |
7429 | gfc_syntax_error (ST_SUBROUTINE); | |
7430 | return MATCH_ERROR; | |
7431 | } | |
7432 | ||
524af0d6 | 7433 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7434 | { |
7435 | if(!sym->attr.module_procedure) | |
7436 | return MATCH_ERROR; | |
7437 | else | |
7438 | gfc_error_check (); | |
7439 | } | |
6de9cd9a | 7440 | |
c3005b0f | 7441 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7442 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7443 | |
6de9cd9a DN |
7444 | return MATCH_YES; |
7445 | } | |
7446 | ||
7447 | ||
3b37ccd4 FXC |
7448 | /* Check that the NAME identifier in a BIND attribute or statement |
7449 | is conform to C identifier rules. */ | |
7450 | ||
7451 | match | |
7452 | check_bind_name_identifier (char **name) | |
7453 | { | |
7454 | char *n = *name, *p; | |
7455 | ||
7456 | /* Remove leading spaces. */ | |
7457 | while (*n == ' ') | |
7458 | n++; | |
7459 | ||
7460 | /* On an empty string, free memory and set name to NULL. */ | |
7461 | if (*n == '\0') | |
7462 | { | |
7463 | free (*name); | |
7464 | *name = NULL; | |
7465 | return MATCH_YES; | |
7466 | } | |
7467 | ||
7468 | /* Remove trailing spaces. */ | |
7469 | p = n + strlen(n) - 1; | |
7470 | while (*p == ' ') | |
7471 | *(p--) = '\0'; | |
7472 | ||
7473 | /* Insert the identifier into the symbol table. */ | |
7474 | p = xstrdup (n); | |
7475 | free (*name); | |
7476 | *name = p; | |
7477 | ||
7478 | /* Now check that identifier is valid under C rules. */ | |
7479 | if (ISDIGIT (*p)) | |
7480 | { | |
7481 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7482 | return MATCH_ERROR; | |
7483 | } | |
7484 | ||
7485 | for (; *p; p++) | |
7486 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7487 | { | |
7488 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7489 | return MATCH_ERROR; | |
7490 | } | |
7491 | ||
7492 | return MATCH_YES; | |
7493 | } | |
7494 | ||
7495 | ||
a8b3b0b6 CR |
7496 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7497 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7498 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7499 | encounter the BIND(C) before the declaration itself. Return |
7500 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7501 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7502 | or MATCH_YES if the specifier was correct and the binding label and | |
7503 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7504 | current_ts. If allow_binding_name is false, no binding name may be |
7505 | given. */ | |
a8b3b0b6 CR |
7506 | |
7507 | match | |
1eabf70a | 7508 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7509 | { |
3b37ccd4 FXC |
7510 | char *binding_label = NULL; |
7511 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7512 | |
f5acf0f2 | 7513 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7514 | specifier or not. */ |
7515 | has_name_equals = 0; | |
7516 | ||
a8b3b0b6 CR |
7517 | /* This much we have to be able to match, in this order, if |
7518 | there is a bind(c) label. */ | |
7519 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7520 | return MATCH_NO; | |
7521 | ||
7522 | /* Now see if there is a binding label, or if we've reached the | |
7523 | end of the bind(c) attribute without one. */ | |
7524 | if (gfc_match_char (',') == MATCH_YES) | |
7525 | { | |
7526 | if (gfc_match (" name = ") != MATCH_YES) | |
7527 | { | |
7528 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7529 | "at %C"); | |
7530 | /* should give an error message here */ | |
7531 | return MATCH_ERROR; | |
7532 | } | |
7533 | ||
7534 | has_name_equals = 1; | |
7535 | ||
3b37ccd4 FXC |
7536 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7537 | { | |
7538 | gfc_free_expr (e); | |
7539 | return MATCH_ERROR; | |
7540 | } | |
f5acf0f2 | 7541 | |
3b37ccd4 | 7542 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7543 | { |
3b37ccd4 FXC |
7544 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7545 | gfc_free_expr (e); | |
7546 | return MATCH_ERROR; | |
a8b3b0b6 | 7547 | } |
3b37ccd4 FXC |
7548 | |
7549 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7550 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7551 | { |
3b37ccd4 FXC |
7552 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7553 | "default character kind"); | |
7554 | gfc_free_expr(e); | |
7555 | return MATCH_ERROR; | |
a8b3b0b6 | 7556 | } |
3b37ccd4 FXC |
7557 | |
7558 | // Get a C string from the Fortran string constant | |
7559 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7560 | e->value.character.length); | |
7561 | gfc_free_expr(e); | |
7562 | ||
7563 | // Check that it is valid (old gfc_match_name_C) | |
7564 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7565 | return MATCH_ERROR; | |
7566 | } | |
a8b3b0b6 CR |
7567 | |
7568 | /* Get the required right paren. */ | |
7569 | if (gfc_match_char (')') != MATCH_YES) | |
7570 | { | |
7571 | gfc_error ("Missing closing paren for binding label at %C"); | |
7572 | return MATCH_ERROR; | |
7573 | } | |
7574 | ||
1eabf70a TB |
7575 | if (has_name_equals && !allow_binding_name) |
7576 | { | |
7577 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7578 | return MATCH_ERROR; | |
7579 | } | |
7580 | ||
7581 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7582 | { | |
7583 | gfc_error ("For dummy procedure %s, no binding name is " | |
7584 | "allowed in BIND(C) at %C", sym->name); | |
7585 | return MATCH_ERROR; | |
7586 | } | |
7587 | ||
7588 | ||
a8b3b0b6 CR |
7589 | /* Save the binding label to the symbol. If sym is null, we're |
7590 | probably matching the typespec attributes of a declaration and | |
7591 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7592 | if (binding_label) |
a8b3b0b6 CR |
7593 | { |
7594 | if (sym != NULL) | |
62603fae | 7595 | sym->binding_label = binding_label; |
a8b3b0b6 | 7596 | else |
62603fae | 7597 | curr_binding_label = binding_label; |
a8b3b0b6 | 7598 | } |
1eabf70a | 7599 | else if (allow_binding_name) |
a8b3b0b6 CR |
7600 | { |
7601 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7602 | can set the label for it here. |
7603 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7604 | created. */ |
a8b3b0b6 | 7605 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7606 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7607 | } |
9e1d712c | 7608 | |
129d15a3 JW |
7609 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7610 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7611 | { |
7612 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7613 | return MATCH_ERROR; | |
7614 | } | |
7615 | ||
a8b3b0b6 CR |
7616 | return MATCH_YES; |
7617 | } | |
7618 | ||
7619 | ||
1f2959f0 | 7620 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7621 | |
7622 | static int | |
7623 | contained_procedure (void) | |
7624 | { | |
083de129 | 7625 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7626 | |
083de129 TB |
7627 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7628 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7629 | return 1; | |
ddc9ce91 TS |
7630 | |
7631 | return 0; | |
7632 | } | |
7633 | ||
d51347f9 | 7634 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7635 | interoperable with the corresponding C enumeration type, making |
7636 | sure that -fshort-enums is honored. */ | |
7637 | ||
7638 | static void | |
7639 | set_enum_kind(void) | |
7640 | { | |
7641 | enumerator_history *current_history = NULL; | |
7642 | int kind; | |
7643 | int i; | |
7644 | ||
7645 | if (max_enum == NULL || enum_history == NULL) | |
7646 | return; | |
7647 | ||
cab129d1 | 7648 | if (!flag_short_enums) |
d51347f9 TB |
7649 | return; |
7650 | ||
25d8f0a2 TS |
7651 | i = 0; |
7652 | do | |
7653 | { | |
7654 | kind = gfc_integer_kinds[i++].kind; | |
7655 | } | |
d51347f9 | 7656 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7657 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7658 | kind) != ARITH_OK); | |
7659 | ||
7660 | current_history = enum_history; | |
7661 | while (current_history != NULL) | |
7662 | { | |
7663 | current_history->sym->ts.kind = kind; | |
7664 | current_history = current_history->next; | |
7665 | } | |
7666 | } | |
7667 | ||
636dff67 | 7668 | |
6de9cd9a | 7669 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
7670 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7671 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
7672 | |
7673 | match | |
636dff67 | 7674 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
7675 | { |
7676 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7677 | gfc_compile_state state; | |
7678 | locus old_loc; | |
7679 | const char *block_name; | |
7680 | const char *target; | |
ddc9ce91 | 7681 | int eos_ok; |
6de9cd9a | 7682 | match m; |
0cab6b73 TK |
7683 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7684 | gfc_namespace **nsp; | |
63af1586 | 7685 | bool abreviated_modproc_decl = false; |
874108a9 | 7686 | bool got_matching_end = false; |
6de9cd9a | 7687 | |
63645982 | 7688 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7689 | if (gfc_match ("end") != MATCH_YES) |
7690 | return MATCH_NO; | |
7691 | ||
7692 | state = gfc_current_state (); | |
636dff67 SK |
7693 | block_name = gfc_current_block () == NULL |
7694 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 7695 | |
03af1e4c | 7696 | switch (state) |
6de9cd9a | 7697 | { |
03af1e4c DK |
7698 | case COMP_ASSOCIATE: |
7699 | case COMP_BLOCK: | |
3a1fd30c | 7700 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
7701 | block_name = NULL; |
7702 | break; | |
7703 | ||
7704 | case COMP_CONTAINS: | |
7705 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 7706 | state = gfc_state_stack->previous->state; |
636dff67 SK |
7707 | block_name = gfc_state_stack->previous->sym == NULL |
7708 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
7709 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7710 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
7711 | break; |
7712 | ||
7713 | default: | |
7714 | break; | |
6de9cd9a DN |
7715 | } |
7716 | ||
63af1586 PT |
7717 | if (!abreviated_modproc_decl) |
7718 | abreviated_modproc_decl = gfc_current_block () | |
7719 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 7720 | |
6de9cd9a DN |
7721 | switch (state) |
7722 | { | |
7723 | case COMP_NONE: | |
7724 | case COMP_PROGRAM: | |
7725 | *st = ST_END_PROGRAM; | |
7726 | target = " program"; | |
ddc9ce91 | 7727 | eos_ok = 1; |
6de9cd9a DN |
7728 | break; |
7729 | ||
7730 | case COMP_SUBROUTINE: | |
7731 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 7732 | if (!abreviated_modproc_decl) |
6de9cd9a | 7733 | target = " subroutine"; |
4668d6f9 PT |
7734 | else |
7735 | target = " procedure"; | |
ddc9ce91 | 7736 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7737 | break; |
7738 | ||
7739 | case COMP_FUNCTION: | |
7740 | *st = ST_END_FUNCTION; | |
4668d6f9 | 7741 | if (!abreviated_modproc_decl) |
6de9cd9a | 7742 | target = " function"; |
4668d6f9 PT |
7743 | else |
7744 | target = " procedure"; | |
ddc9ce91 | 7745 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7746 | break; |
7747 | ||
7748 | case COMP_BLOCK_DATA: | |
7749 | *st = ST_END_BLOCK_DATA; | |
7750 | target = " block data"; | |
ddc9ce91 | 7751 | eos_ok = 1; |
6de9cd9a DN |
7752 | break; |
7753 | ||
7754 | case COMP_MODULE: | |
7755 | *st = ST_END_MODULE; | |
7756 | target = " module"; | |
ddc9ce91 | 7757 | eos_ok = 1; |
6de9cd9a DN |
7758 | break; |
7759 | ||
4668d6f9 PT |
7760 | case COMP_SUBMODULE: |
7761 | *st = ST_END_SUBMODULE; | |
7762 | target = " submodule"; | |
7763 | eos_ok = 1; | |
7764 | break; | |
7765 | ||
6de9cd9a DN |
7766 | case COMP_INTERFACE: |
7767 | *st = ST_END_INTERFACE; | |
7768 | target = " interface"; | |
ddc9ce91 | 7769 | eos_ok = 0; |
6de9cd9a DN |
7770 | break; |
7771 | ||
f6288c24 FR |
7772 | case COMP_MAP: |
7773 | *st = ST_END_MAP; | |
7774 | target = " map"; | |
7775 | eos_ok = 0; | |
7776 | break; | |
7777 | ||
7778 | case COMP_UNION: | |
7779 | *st = ST_END_UNION; | |
7780 | target = " union"; | |
7781 | eos_ok = 0; | |
7782 | break; | |
7783 | ||
7784 | case COMP_STRUCTURE: | |
7785 | *st = ST_END_STRUCTURE; | |
7786 | target = " structure"; | |
7787 | eos_ok = 0; | |
7788 | break; | |
7789 | ||
6de9cd9a | 7790 | case COMP_DERIVED: |
30b608eb | 7791 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
7792 | *st = ST_END_TYPE; |
7793 | target = " type"; | |
ddc9ce91 | 7794 | eos_ok = 0; |
6de9cd9a DN |
7795 | break; |
7796 | ||
03af1e4c DK |
7797 | case COMP_ASSOCIATE: |
7798 | *st = ST_END_ASSOCIATE; | |
7799 | target = " associate"; | |
7800 | eos_ok = 0; | |
7801 | break; | |
7802 | ||
9abe5e56 DK |
7803 | case COMP_BLOCK: |
7804 | *st = ST_END_BLOCK; | |
7805 | target = " block"; | |
7806 | eos_ok = 0; | |
7807 | break; | |
7808 | ||
6de9cd9a DN |
7809 | case COMP_IF: |
7810 | *st = ST_ENDIF; | |
7811 | target = " if"; | |
ddc9ce91 | 7812 | eos_ok = 0; |
6de9cd9a DN |
7813 | break; |
7814 | ||
7815 | case COMP_DO: | |
8c6a85e3 | 7816 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
7817 | *st = ST_ENDDO; |
7818 | target = " do"; | |
ddc9ce91 | 7819 | eos_ok = 0; |
6de9cd9a DN |
7820 | break; |
7821 | ||
d0a4a61c TB |
7822 | case COMP_CRITICAL: |
7823 | *st = ST_END_CRITICAL; | |
7824 | target = " critical"; | |
7825 | eos_ok = 0; | |
7826 | break; | |
7827 | ||
6de9cd9a | 7828 | case COMP_SELECT: |
cf2b3c22 | 7829 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
7830 | *st = ST_END_SELECT; |
7831 | target = " select"; | |
ddc9ce91 | 7832 | eos_ok = 0; |
6de9cd9a DN |
7833 | break; |
7834 | ||
7835 | case COMP_FORALL: | |
7836 | *st = ST_END_FORALL; | |
7837 | target = " forall"; | |
ddc9ce91 | 7838 | eos_ok = 0; |
6de9cd9a DN |
7839 | break; |
7840 | ||
7841 | case COMP_WHERE: | |
7842 | *st = ST_END_WHERE; | |
7843 | target = " where"; | |
ddc9ce91 | 7844 | eos_ok = 0; |
6de9cd9a DN |
7845 | break; |
7846 | ||
25d8f0a2 TS |
7847 | case COMP_ENUM: |
7848 | *st = ST_END_ENUM; | |
7849 | target = " enum"; | |
7850 | eos_ok = 0; | |
7851 | last_initializer = NULL; | |
7852 | set_enum_kind (); | |
7853 | gfc_free_enum_history (); | |
7854 | break; | |
7855 | ||
6de9cd9a DN |
7856 | default: |
7857 | gfc_error ("Unexpected END statement at %C"); | |
7858 | goto cleanup; | |
7859 | } | |
7860 | ||
3a43b5b3 | 7861 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7862 | if (gfc_match_eos () == MATCH_YES) |
7863 | { | |
272001a2 TB |
7864 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
7865 | { | |
524af0d6 | 7866 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 7867 | "instead of %s statement at %L", |
4668d6f9 PT |
7868 | abreviated_modproc_decl ? "END PROCEDURE" |
7869 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
7870 | goto cleanup; |
7871 | } | |
7872 | else if (!eos_ok) | |
6de9cd9a | 7873 | { |
66e4ab31 | 7874 | /* We would have required END [something]. */ |
59ce85b5 TS |
7875 | gfc_error ("%s statement expected at %L", |
7876 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
7877 | goto cleanup; |
7878 | } | |
7879 | ||
7880 | return MATCH_YES; | |
7881 | } | |
7882 | ||
7883 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
7884 | if (gfc_match (target) != MATCH_YES) | |
7885 | { | |
4668d6f9 PT |
7886 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
7887 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
7888 | goto cleanup; |
7889 | } | |
874108a9 AV |
7890 | else |
7891 | got_matching_end = true; | |
6de9cd9a | 7892 | |
3a43b5b3 | 7893 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7894 | /* If we're at the end, make sure a block name wasn't required. */ |
7895 | if (gfc_match_eos () == MATCH_YES) | |
7896 | { | |
7897 | ||
690af379 | 7898 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 7899 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 7900 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
7901 | return MATCH_YES; |
7902 | ||
9abe5e56 | 7903 | if (!block_name) |
6de9cd9a DN |
7904 | return MATCH_YES; |
7905 | ||
c4100eae | 7906 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 7907 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
7908 | |
7909 | return MATCH_ERROR; | |
7910 | } | |
7911 | ||
7912 | /* END INTERFACE has a special handler for its several possible endings. */ | |
7913 | if (*st == ST_END_INTERFACE) | |
7914 | return gfc_match_end_interface (); | |
7915 | ||
66e4ab31 SK |
7916 | /* We haven't hit the end of statement, so what is left must be an |
7917 | end-name. */ | |
6de9cd9a DN |
7918 | m = gfc_match_space (); |
7919 | if (m == MATCH_YES) | |
7920 | m = gfc_match_name (name); | |
7921 | ||
7922 | if (m == MATCH_NO) | |
7923 | gfc_error ("Expected terminating name at %C"); | |
7924 | if (m != MATCH_YES) | |
7925 | goto cleanup; | |
7926 | ||
7927 | if (block_name == NULL) | |
7928 | goto syntax; | |
7929 | ||
3d5dc929 PT |
7930 | /* We have to pick out the declared submodule name from the composite |
7931 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
7932 | if (state == COMP_SUBMODULE) | |
7933 | block_name = strchr (block_name, '.') + 1; | |
7934 | ||
3070bab4 | 7935 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 7936 | { |
c4100eae | 7937 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
7938 | gfc_ascii_statement (*st)); |
7939 | goto cleanup; | |
7940 | } | |
3070bab4 JW |
7941 | /* Procedure pointer as function result. */ |
7942 | else if (strcmp (block_name, "ppr@") == 0 | |
7943 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
7944 | { | |
c4100eae | 7945 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
7946 | gfc_current_block ()->ns->proc_name->name, |
7947 | gfc_ascii_statement (*st)); | |
7948 | goto cleanup; | |
7949 | } | |
6de9cd9a DN |
7950 | |
7951 | if (gfc_match_eos () == MATCH_YES) | |
7952 | return MATCH_YES; | |
7953 | ||
7954 | syntax: | |
7955 | gfc_syntax_error (*st); | |
7956 | ||
7957 | cleanup: | |
63645982 | 7958 | gfc_current_locus = old_loc; |
0cab6b73 TK |
7959 | |
7960 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
7961 | Remove it from the parent namespace's sibling list. */ | |
7962 | ||
874108a9 | 7963 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
7964 | { |
7965 | parent_ns = gfc_current_ns->parent; | |
7966 | ||
7967 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
7968 | ||
7969 | prev_ns = NULL; | |
7970 | ns = *nsp; | |
7971 | while (ns) | |
7972 | { | |
7973 | if (ns == gfc_current_ns) | |
7974 | { | |
7975 | if (prev_ns == NULL) | |
7976 | *nsp = NULL; | |
7977 | else | |
7978 | prev_ns->sibling = ns->sibling; | |
7979 | } | |
7980 | prev_ns = ns; | |
7981 | ns = ns->sibling; | |
7982 | } | |
874108a9 | 7983 | |
0cab6b73 TK |
7984 | gfc_free_namespace (gfc_current_ns); |
7985 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
7986 | gfc_state_stack = gfc_state_stack->previous; |
7987 | state = gfc_current_state (); | |
0cab6b73 TK |
7988 | } |
7989 | ||
6de9cd9a DN |
7990 | return MATCH_ERROR; |
7991 | } | |
7992 | ||
7993 | ||
7994 | ||
7995 | /***************** Attribute declaration statements ****************/ | |
7996 | ||
7997 | /* Set the attribute of a single variable. */ | |
7998 | ||
7999 | static match | |
8000 | attr_decl1 (void) | |
8001 | { | |
8002 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8003 | gfc_array_spec *as; | |
97440db5 ML |
8004 | |
8005 | /* Workaround -Wmaybe-uninitialized false positive during | |
8006 | profiledbootstrap by initializing them. */ | |
8007 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8008 | locus var_locus; |
8009 | match m; | |
8010 | ||
8011 | as = NULL; | |
8012 | ||
8013 | m = gfc_match_name (name); | |
8014 | if (m != MATCH_YES) | |
8015 | goto cleanup; | |
8016 | ||
08a6b8e0 | 8017 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8018 | return MATCH_ERROR; |
8019 | ||
524af0d6 | 8020 | if (!check_function_name (name)) |
bb9de0c4 JW |
8021 | { |
8022 | m = MATCH_ERROR; | |
8023 | goto cleanup; | |
8024 | } | |
f5acf0f2 | 8025 | |
63645982 | 8026 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8027 | |
8028 | /* Deal with possible array specification for certain attributes. */ | |
8029 | if (current_attr.dimension | |
be59db2d | 8030 | || current_attr.codimension |
6de9cd9a DN |
8031 | || current_attr.allocatable |
8032 | || current_attr.pointer | |
8033 | || current_attr.target) | |
8034 | { | |
be59db2d TB |
8035 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8036 | !current_attr.dimension | |
8037 | && !current_attr.pointer | |
8038 | && !current_attr.target); | |
6de9cd9a DN |
8039 | if (m == MATCH_ERROR) |
8040 | goto cleanup; | |
8041 | ||
8042 | if (current_attr.dimension && m == MATCH_NO) | |
8043 | { | |
636dff67 SK |
8044 | gfc_error ("Missing array specification at %L in DIMENSION " |
8045 | "statement", &var_locus); | |
6de9cd9a DN |
8046 | m = MATCH_ERROR; |
8047 | goto cleanup; | |
8048 | } | |
8049 | ||
1283ab12 TB |
8050 | if (current_attr.dimension && sym->value) |
8051 | { | |
8052 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8053 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8054 | m = MATCH_ERROR; |
8055 | goto cleanup; | |
8056 | } | |
8057 | ||
be59db2d TB |
8058 | if (current_attr.codimension && m == MATCH_NO) |
8059 | { | |
8060 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8061 | "statement", &var_locus); | |
8062 | m = MATCH_ERROR; | |
8063 | goto cleanup; | |
8064 | } | |
8065 | ||
6de9cd9a DN |
8066 | if ((current_attr.allocatable || current_attr.pointer) |
8067 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8068 | { | |
636dff67 | 8069 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8070 | m = MATCH_ERROR; |
8071 | goto cleanup; | |
8072 | } | |
8073 | } | |
8074 | ||
2e23972e JW |
8075 | /* Update symbol table. DIMENSION attribute is set in |
8076 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8077 | to the first component, or '_data' field. */ |
d40477b4 | 8078 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8079 | { |
524af0d6 | 8080 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8081 | { |
8082 | m = MATCH_ERROR; | |
8083 | goto cleanup; | |
8084 | } | |
2e23972e JW |
8085 | } |
8086 | else | |
8087 | { | |
be59db2d | 8088 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8089 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8090 | { |
8091 | m = MATCH_ERROR; | |
8092 | goto cleanup; | |
8093 | } | |
6de9cd9a | 8094 | } |
f5acf0f2 | 8095 | |
528622fd | 8096 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8097 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8098 | { |
8099 | m = MATCH_ERROR; | |
8100 | goto cleanup; | |
8101 | } | |
6de9cd9a | 8102 | |
524af0d6 | 8103 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8104 | { |
8105 | m = MATCH_ERROR; | |
8106 | goto cleanup; | |
8107 | } | |
d51347f9 | 8108 | |
83d890b9 AL |
8109 | if (sym->attr.cray_pointee && sym->as != NULL) |
8110 | { | |
8111 | /* Fix the array spec. */ | |
f5acf0f2 | 8112 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8113 | if (m == MATCH_ERROR) |
8114 | goto cleanup; | |
8115 | } | |
6de9cd9a | 8116 | |
524af0d6 | 8117 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8118 | { |
8119 | m = MATCH_ERROR; | |
8120 | goto cleanup; | |
8121 | } | |
8122 | ||
6de9cd9a DN |
8123 | if ((current_attr.external || current_attr.intrinsic) |
8124 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8125 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8126 | { |
8127 | m = MATCH_ERROR; | |
8128 | goto cleanup; | |
8129 | } | |
8130 | ||
3070bab4 JW |
8131 | add_hidden_procptr_result (sym); |
8132 | ||
6de9cd9a DN |
8133 | return MATCH_YES; |
8134 | ||
8135 | cleanup: | |
8136 | gfc_free_array_spec (as); | |
8137 | return m; | |
8138 | } | |
8139 | ||
8140 | ||
8141 | /* Generic attribute declaration subroutine. Used for attributes that | |
8142 | just have a list of names. */ | |
8143 | ||
8144 | static match | |
8145 | attr_decl (void) | |
8146 | { | |
8147 | match m; | |
8148 | ||
8149 | /* Gobble the optional double colon, by simply ignoring the result | |
8150 | of gfc_match(). */ | |
8151 | gfc_match (" ::"); | |
8152 | ||
8153 | for (;;) | |
8154 | { | |
8155 | m = attr_decl1 (); | |
8156 | if (m != MATCH_YES) | |
8157 | break; | |
8158 | ||
8159 | if (gfc_match_eos () == MATCH_YES) | |
8160 | { | |
8161 | m = MATCH_YES; | |
8162 | break; | |
8163 | } | |
8164 | ||
8165 | if (gfc_match_char (',') != MATCH_YES) | |
8166 | { | |
8167 | gfc_error ("Unexpected character in variable list at %C"); | |
8168 | m = MATCH_ERROR; | |
8169 | break; | |
8170 | } | |
8171 | } | |
8172 | ||
8173 | return m; | |
8174 | } | |
8175 | ||
8176 | ||
83d890b9 AL |
8177 | /* This routine matches Cray Pointer declarations of the form: |
8178 | pointer ( <pointer>, <pointee> ) | |
8179 | or | |
d51347f9 TB |
8180 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8181 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8182 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8183 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8184 | the pointee. For the statement |
83d890b9 AL |
8185 | pointer (ipt, ar(10)) |
8186 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8187 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8188 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8189 | |
8190 | static match | |
8191 | cray_pointer_decl (void) | |
8192 | { | |
8193 | match m; | |
be59db2d | 8194 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8195 | gfc_symbol *cptr; /* Pointer symbol. */ |
8196 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8197 | locus var_locus; | |
8198 | bool done = false; | |
8199 | ||
8200 | while (!done) | |
8201 | { | |
8202 | if (gfc_match_char ('(') != MATCH_YES) | |
8203 | { | |
a4d9b221 | 8204 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8205 | return MATCH_ERROR; |
83d890b9 | 8206 | } |
d51347f9 | 8207 | |
83d890b9 AL |
8208 | /* Match pointer. */ |
8209 | var_locus = gfc_current_locus; | |
8210 | gfc_clear_attr (¤t_attr); | |
8211 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8212 | current_ts.type = BT_INTEGER; | |
8213 | current_ts.kind = gfc_index_integer_kind; | |
8214 | ||
d51347f9 | 8215 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8216 | if (m != MATCH_YES) |
8217 | { | |
8218 | gfc_error ("Expected variable name at %C"); | |
8219 | return m; | |
8220 | } | |
d51347f9 | 8221 | |
524af0d6 | 8222 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8223 | return MATCH_ERROR; |
8224 | ||
d51347f9 | 8225 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8226 | |
8227 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8228 | { | |
8229 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8230 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8231 | } |
8232 | else if (cptr->ts.type != BT_INTEGER) | |
8233 | { | |
e25a0da3 | 8234 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8235 | return MATCH_ERROR; |
8236 | } | |
8237 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8238 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8239 | " memory addresses require %d bytes", |
636dff67 | 8240 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8241 | |
8242 | if (gfc_match_char (',') != MATCH_YES) | |
8243 | { | |
8244 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8245 | return MATCH_ERROR; |
83d890b9 AL |
8246 | } |
8247 | ||
d51347f9 | 8248 | /* Match Pointee. */ |
83d890b9 AL |
8249 | var_locus = gfc_current_locus; |
8250 | gfc_clear_attr (¤t_attr); | |
8251 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8252 | current_ts.type = BT_UNKNOWN; | |
8253 | current_ts.kind = 0; | |
8254 | ||
8255 | m = gfc_match_symbol (&cpte, 0); | |
8256 | if (m != MATCH_YES) | |
8257 | { | |
8258 | gfc_error ("Expected variable name at %C"); | |
8259 | return m; | |
8260 | } | |
d51347f9 | 8261 | |
83d890b9 | 8262 | /* Check for an optional array spec. */ |
be59db2d | 8263 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8264 | if (m == MATCH_ERROR) |
8265 | { | |
8266 | gfc_free_array_spec (as); | |
8267 | return m; | |
8268 | } | |
8269 | else if (m == MATCH_NO) | |
8270 | { | |
8271 | gfc_free_array_spec (as); | |
8272 | as = NULL; | |
f5acf0f2 | 8273 | } |
83d890b9 | 8274 | |
524af0d6 | 8275 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8276 | return MATCH_ERROR; |
8277 | ||
8278 | gfc_set_sym_referenced (cpte); | |
8279 | ||
8280 | if (cpte->as == NULL) | |
8281 | { | |
524af0d6 | 8282 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
8283 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8284 | } | |
8285 | else if (as != NULL) | |
8286 | { | |
e25a0da3 | 8287 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8288 | gfc_free_array_spec (as); |
8289 | return MATCH_ERROR; | |
8290 | } | |
f5acf0f2 | 8291 | |
83d890b9 | 8292 | as = NULL; |
f5acf0f2 | 8293 | |
83d890b9 AL |
8294 | if (cpte->as != NULL) |
8295 | { | |
8296 | /* Fix array spec. */ | |
8297 | m = gfc_mod_pointee_as (cpte->as); | |
8298 | if (m == MATCH_ERROR) | |
8299 | return m; | |
f5acf0f2 PT |
8300 | } |
8301 | ||
83d890b9 | 8302 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8303 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8304 | |
8305 | if (gfc_match_char (')') != MATCH_YES) | |
8306 | { | |
8307 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8308 | return MATCH_ERROR; |
83d890b9 AL |
8309 | } |
8310 | m = gfc_match_char (','); | |
8311 | if (m != MATCH_YES) | |
8312 | done = true; /* Stop searching for more declarations. */ | |
8313 | ||
8314 | } | |
f5acf0f2 | 8315 | |
83d890b9 AL |
8316 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8317 | || gfc_match_eos () != MATCH_YES) | |
8318 | { | |
a4d9b221 | 8319 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8320 | return MATCH_ERROR; |
8321 | } | |
8322 | return MATCH_YES; | |
8323 | } | |
8324 | ||
8325 | ||
6de9cd9a DN |
8326 | match |
8327 | gfc_match_external (void) | |
8328 | { | |
8329 | ||
8330 | gfc_clear_attr (¤t_attr); | |
1902704e | 8331 | current_attr.external = 1; |
6de9cd9a DN |
8332 | |
8333 | return attr_decl (); | |
8334 | } | |
8335 | ||
8336 | ||
6de9cd9a DN |
8337 | match |
8338 | gfc_match_intent (void) | |
8339 | { | |
8340 | sym_intent intent; | |
8341 | ||
9abe5e56 DK |
8342 | /* This is not allowed within a BLOCK construct! */ |
8343 | if (gfc_current_state () == COMP_BLOCK) | |
8344 | { | |
8345 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8346 | return MATCH_ERROR; | |
8347 | } | |
8348 | ||
6de9cd9a DN |
8349 | intent = match_intent_spec (); |
8350 | if (intent == INTENT_UNKNOWN) | |
8351 | return MATCH_ERROR; | |
8352 | ||
8353 | gfc_clear_attr (¤t_attr); | |
1902704e | 8354 | current_attr.intent = intent; |
6de9cd9a DN |
8355 | |
8356 | return attr_decl (); | |
8357 | } | |
8358 | ||
8359 | ||
8360 | match | |
8361 | gfc_match_intrinsic (void) | |
8362 | { | |
8363 | ||
8364 | gfc_clear_attr (¤t_attr); | |
1902704e | 8365 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8366 | |
8367 | return attr_decl (); | |
8368 | } | |
8369 | ||
8370 | ||
8371 | match | |
8372 | gfc_match_optional (void) | |
8373 | { | |
9abe5e56 DK |
8374 | /* This is not allowed within a BLOCK construct! */ |
8375 | if (gfc_current_state () == COMP_BLOCK) | |
8376 | { | |
8377 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8378 | return MATCH_ERROR; | |
8379 | } | |
6de9cd9a DN |
8380 | |
8381 | gfc_clear_attr (¤t_attr); | |
1902704e | 8382 | current_attr.optional = 1; |
6de9cd9a DN |
8383 | |
8384 | return attr_decl (); | |
8385 | } | |
8386 | ||
8387 | ||
8388 | match | |
8389 | gfc_match_pointer (void) | |
8390 | { | |
83d890b9 | 8391 | gfc_gobble_whitespace (); |
8fc541d3 | 8392 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8393 | { |
c61819ff | 8394 | if (!flag_cray_pointer) |
83d890b9 | 8395 | { |
636dff67 SK |
8396 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8397 | "flag"); | |
83d890b9 AL |
8398 | return MATCH_ERROR; |
8399 | } | |
8400 | return cray_pointer_decl (); | |
8401 | } | |
8402 | else | |
8403 | { | |
8404 | gfc_clear_attr (¤t_attr); | |
1902704e | 8405 | current_attr.pointer = 1; |
f5acf0f2 | 8406 | |
83d890b9 AL |
8407 | return attr_decl (); |
8408 | } | |
6de9cd9a DN |
8409 | } |
8410 | ||
8411 | ||
8412 | match | |
8413 | gfc_match_allocatable (void) | |
8414 | { | |
6de9cd9a | 8415 | gfc_clear_attr (¤t_attr); |
1902704e | 8416 | current_attr.allocatable = 1; |
6de9cd9a DN |
8417 | |
8418 | return attr_decl (); | |
8419 | } | |
8420 | ||
8421 | ||
be59db2d TB |
8422 | match |
8423 | gfc_match_codimension (void) | |
8424 | { | |
8425 | gfc_clear_attr (¤t_attr); | |
8426 | current_attr.codimension = 1; | |
8427 | ||
8428 | return attr_decl (); | |
8429 | } | |
8430 | ||
8431 | ||
fe4e525c TB |
8432 | match |
8433 | gfc_match_contiguous (void) | |
8434 | { | |
524af0d6 | 8435 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8436 | return MATCH_ERROR; |
8437 | ||
8438 | gfc_clear_attr (¤t_attr); | |
8439 | current_attr.contiguous = 1; | |
8440 | ||
8441 | return attr_decl (); | |
8442 | } | |
8443 | ||
8444 | ||
6de9cd9a DN |
8445 | match |
8446 | gfc_match_dimension (void) | |
8447 | { | |
6de9cd9a | 8448 | gfc_clear_attr (¤t_attr); |
1902704e | 8449 | current_attr.dimension = 1; |
6de9cd9a DN |
8450 | |
8451 | return attr_decl (); | |
8452 | } | |
8453 | ||
8454 | ||
8455 | match | |
8456 | gfc_match_target (void) | |
8457 | { | |
6de9cd9a | 8458 | gfc_clear_attr (¤t_attr); |
1902704e | 8459 | current_attr.target = 1; |
6de9cd9a DN |
8460 | |
8461 | return attr_decl (); | |
8462 | } | |
8463 | ||
8464 | ||
8465 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8466 | statement. */ | |
8467 | ||
8468 | static match | |
8469 | access_attr_decl (gfc_statement st) | |
8470 | { | |
8471 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8472 | interface_type type; | |
8473 | gfc_user_op *uop; | |
c3f34952 | 8474 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8475 | gfc_intrinsic_op op; |
6de9cd9a DN |
8476 | match m; |
8477 | ||
8478 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8479 | goto done; | |
8480 | ||
8481 | for (;;) | |
8482 | { | |
a1ee985f | 8483 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8484 | if (m == MATCH_NO) |
8485 | goto syntax; | |
8486 | if (m == MATCH_ERROR) | |
8487 | return MATCH_ERROR; | |
8488 | ||
8489 | switch (type) | |
8490 | { | |
8491 | case INTERFACE_NAMELESS: | |
9e1d712c | 8492 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8493 | goto syntax; |
8494 | ||
8495 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8496 | case INTERFACE_DTIO: |
dc42a736 | 8497 | |
6de9cd9a DN |
8498 | if (gfc_get_symbol (name, NULL, &sym)) |
8499 | goto done; | |
8500 | ||
41036686 PT |
8501 | if (type == INTERFACE_DTIO |
8502 | && gfc_current_ns->proc_name | |
8503 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8504 | && sym->attr.flavor == FL_UNKNOWN) | |
8505 | sym->attr.flavor = FL_PROCEDURE; | |
8506 | ||
70112e2a PT |
8507 | if (!gfc_add_access (&sym->attr, |
8508 | (st == ST_PUBLIC) | |
8509 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8510 | sym->name, NULL)) |
6de9cd9a DN |
8511 | return MATCH_ERROR; |
8512 | ||
c3f34952 | 8513 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
8514 | && !gfc_add_access (&dt_sym->attr, |
8515 | (st == ST_PUBLIC) | |
8516 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8517 | sym->name, NULL)) |
c3f34952 TB |
8518 | return MATCH_ERROR; |
8519 | ||
6de9cd9a DN |
8520 | break; |
8521 | ||
8522 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8523 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8524 | { |
fb03a37e TK |
8525 | gfc_intrinsic_op other_op; |
8526 | ||
a1ee985f | 8527 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 8528 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
8529 | |
8530 | /* Handle the case if there is another op with the same | |
8531 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8532 | other_op = gfc_equivalent_op (op); | |
8533 | ||
8534 | if (other_op != INTRINSIC_NONE) | |
8535 | gfc_current_ns->operator_access[other_op] = | |
8536 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8537 | ||
6de9cd9a DN |
8538 | } |
8539 | else | |
8540 | { | |
8541 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8542 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8543 | goto done; |
8544 | } | |
8545 | ||
8546 | break; | |
8547 | ||
8548 | case INTERFACE_USER_OP: | |
8549 | uop = gfc_get_uop (name); | |
8550 | ||
8551 | if (uop->access == ACCESS_UNKNOWN) | |
8552 | { | |
636dff67 SK |
8553 | uop->access = (st == ST_PUBLIC) |
8554 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
8555 | } |
8556 | else | |
8557 | { | |
636dff67 SK |
8558 | gfc_error ("Access specification of the .%s. operator at %C " |
8559 | "has already been specified", sym->name); | |
6de9cd9a DN |
8560 | goto done; |
8561 | } | |
8562 | ||
8563 | break; | |
8564 | } | |
8565 | ||
8566 | if (gfc_match_char (',') == MATCH_NO) | |
8567 | break; | |
8568 | } | |
8569 | ||
8570 | if (gfc_match_eos () != MATCH_YES) | |
8571 | goto syntax; | |
8572 | return MATCH_YES; | |
8573 | ||
8574 | syntax: | |
8575 | gfc_syntax_error (st); | |
8576 | ||
8577 | done: | |
8578 | return MATCH_ERROR; | |
8579 | } | |
8580 | ||
8581 | ||
ee7e677f TB |
8582 | match |
8583 | gfc_match_protected (void) | |
8584 | { | |
8585 | gfc_symbol *sym; | |
8586 | match m; | |
8587 | ||
73641c88 SK |
8588 | if (!gfc_current_ns->proc_name |
8589 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8590 | { |
8591 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8592 | "part of a module"); | |
8593 | return MATCH_ERROR; | |
8594 | ||
8595 | } | |
8596 | ||
524af0d6 | 8597 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8598 | return MATCH_ERROR; |
8599 | ||
8600 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8601 | { | |
8602 | return MATCH_ERROR; | |
8603 | } | |
8604 | ||
8605 | if (gfc_match_eos () == MATCH_YES) | |
8606 | goto syntax; | |
8607 | ||
8608 | for(;;) | |
8609 | { | |
8610 | m = gfc_match_symbol (&sym, 0); | |
8611 | switch (m) | |
8612 | { | |
8613 | case MATCH_YES: | |
524af0d6 | 8614 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8615 | return MATCH_ERROR; |
8616 | goto next_item; | |
8617 | ||
8618 | case MATCH_NO: | |
8619 | break; | |
8620 | ||
8621 | case MATCH_ERROR: | |
8622 | return MATCH_ERROR; | |
8623 | } | |
8624 | ||
8625 | next_item: | |
8626 | if (gfc_match_eos () == MATCH_YES) | |
8627 | break; | |
8628 | if (gfc_match_char (',') != MATCH_YES) | |
8629 | goto syntax; | |
8630 | } | |
8631 | ||
8632 | return MATCH_YES; | |
8633 | ||
8634 | syntax: | |
8635 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8636 | return MATCH_ERROR; | |
8637 | } | |
8638 | ||
8639 | ||
86bf520d | 8640 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8641 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8642 | type declaration or a module. */ |
8643 | ||
8644 | match | |
636dff67 | 8645 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
8646 | { |
8647 | ||
8648 | if (gfc_match ("private") != MATCH_YES) | |
8649 | return MATCH_NO; | |
8650 | ||
d51347f9 | 8651 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
8652 | && !(gfc_current_state () == COMP_DERIVED |
8653 | && gfc_state_stack->previous | |
8654 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8655 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8656 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8657 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
8658 | { |
8659 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8660 | "specification part of a module"); | |
8661 | return MATCH_ERROR; | |
8662 | } | |
8663 | ||
6de9cd9a DN |
8664 | if (gfc_current_state () == COMP_DERIVED) |
8665 | { | |
8666 | if (gfc_match_eos () == MATCH_YES) | |
8667 | { | |
8668 | *st = ST_PRIVATE; | |
8669 | return MATCH_YES; | |
8670 | } | |
8671 | ||
8672 | gfc_syntax_error (ST_PRIVATE); | |
8673 | return MATCH_ERROR; | |
8674 | } | |
8675 | ||
8676 | if (gfc_match_eos () == MATCH_YES) | |
8677 | { | |
8678 | *st = ST_PRIVATE; | |
8679 | return MATCH_YES; | |
8680 | } | |
8681 | ||
8682 | *st = ST_ATTR_DECL; | |
8683 | return access_attr_decl (ST_PRIVATE); | |
8684 | } | |
8685 | ||
8686 | ||
8687 | match | |
636dff67 | 8688 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
8689 | { |
8690 | ||
8691 | if (gfc_match ("public") != MATCH_YES) | |
8692 | return MATCH_NO; | |
8693 | ||
d51347f9 TB |
8694 | if (gfc_current_state () != COMP_MODULE) |
8695 | { | |
8696 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8697 | "specification part of a module"); | |
8698 | return MATCH_ERROR; | |
8699 | } | |
8700 | ||
6de9cd9a DN |
8701 | if (gfc_match_eos () == MATCH_YES) |
8702 | { | |
8703 | *st = ST_PUBLIC; | |
8704 | return MATCH_YES; | |
8705 | } | |
8706 | ||
8707 | *st = ST_ATTR_DECL; | |
8708 | return access_attr_decl (ST_PUBLIC); | |
8709 | } | |
8710 | ||
8711 | ||
8712 | /* Workhorse for gfc_match_parameter. */ | |
8713 | ||
8714 | static match | |
8715 | do_parm (void) | |
8716 | { | |
8717 | gfc_symbol *sym; | |
8718 | gfc_expr *init; | |
8719 | match m; | |
524af0d6 | 8720 | bool t; |
6de9cd9a DN |
8721 | |
8722 | m = gfc_match_symbol (&sym, 0); | |
8723 | if (m == MATCH_NO) | |
8724 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8725 | ||
8726 | if (m != MATCH_YES) | |
8727 | return m; | |
8728 | ||
8729 | if (gfc_match_char ('=') == MATCH_NO) | |
8730 | { | |
8731 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8732 | return MATCH_ERROR; | |
8733 | } | |
8734 | ||
8735 | m = gfc_match_init_expr (&init); | |
8736 | if (m == MATCH_NO) | |
8737 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8738 | if (m != MATCH_YES) | |
8739 | return m; | |
8740 | ||
8741 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 8742 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
8743 | { |
8744 | m = MATCH_ERROR; | |
8745 | goto cleanup; | |
8746 | } | |
8747 | ||
524af0d6 JB |
8748 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8749 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
8750 | { |
8751 | m = MATCH_ERROR; | |
8752 | goto cleanup; | |
8753 | } | |
8754 | ||
1283ab12 TB |
8755 | if (sym->value) |
8756 | { | |
8757 | gfc_error ("Initializing already initialized variable at %C"); | |
8758 | m = MATCH_ERROR; | |
8759 | goto cleanup; | |
8760 | } | |
8761 | ||
7919373d | 8762 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 8763 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
8764 | |
8765 | cleanup: | |
8766 | gfc_free_expr (init); | |
8767 | return m; | |
8768 | } | |
8769 | ||
8770 | ||
8771 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8772 | ||
8773 | match | |
8774 | gfc_match_parameter (void) | |
8775 | { | |
35ea947f | 8776 | const char *term = " )%t"; |
6de9cd9a DN |
8777 | match m; |
8778 | ||
8779 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
8780 | { |
8781 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8782 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8783 | return MATCH_NO; | |
8784 | term = " %t"; | |
8785 | } | |
6de9cd9a DN |
8786 | |
8787 | for (;;) | |
8788 | { | |
8789 | m = do_parm (); | |
8790 | if (m != MATCH_YES) | |
8791 | break; | |
8792 | ||
35ea947f | 8793 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
8794 | break; |
8795 | ||
8796 | if (gfc_match_char (',') != MATCH_YES) | |
8797 | { | |
8798 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8799 | m = MATCH_ERROR; | |
8800 | break; | |
8801 | } | |
8802 | } | |
8803 | ||
8804 | return m; | |
8805 | } | |
8806 | ||
8807 | ||
34d567d1 FR |
8808 | match |
8809 | gfc_match_automatic (void) | |
8810 | { | |
8811 | gfc_symbol *sym; | |
8812 | match m; | |
8813 | bool seen_symbol = false; | |
8814 | ||
8815 | if (!flag_dec_static) | |
8816 | { | |
cf004230 FR |
8817 | gfc_error ("%s at %C is a DEC extension, enable with " |
8818 | "%<-fdec-static%>", | |
8819 | "AUTOMATIC" | |
8820 | ); | |
34d567d1 FR |
8821 | return MATCH_ERROR; |
8822 | } | |
8823 | ||
8824 | gfc_match (" ::"); | |
8825 | ||
8826 | for (;;) | |
8827 | { | |
8828 | m = gfc_match_symbol (&sym, 0); | |
8829 | switch (m) | |
8830 | { | |
8831 | case MATCH_NO: | |
8832 | break; | |
8833 | ||
8834 | case MATCH_ERROR: | |
8835 | return MATCH_ERROR; | |
8836 | ||
8837 | case MATCH_YES: | |
8838 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
8839 | return MATCH_ERROR; | |
8840 | seen_symbol = true; | |
8841 | break; | |
8842 | } | |
8843 | ||
8844 | if (gfc_match_eos () == MATCH_YES) | |
8845 | break; | |
8846 | if (gfc_match_char (',') != MATCH_YES) | |
8847 | goto syntax; | |
8848 | } | |
8849 | ||
8850 | if (!seen_symbol) | |
8851 | { | |
8852 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
8853 | return MATCH_ERROR; | |
8854 | } | |
8855 | ||
8856 | return MATCH_YES; | |
8857 | ||
8858 | syntax: | |
8859 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
8860 | return MATCH_ERROR; | |
8861 | } | |
8862 | ||
8863 | ||
8864 | match | |
8865 | gfc_match_static (void) | |
8866 | { | |
8867 | gfc_symbol *sym; | |
8868 | match m; | |
8869 | bool seen_symbol = false; | |
8870 | ||
8871 | if (!flag_dec_static) | |
8872 | { | |
cf004230 FR |
8873 | gfc_error ("%s at %C is a DEC extension, enable with " |
8874 | "%<-fdec-static%>", | |
8875 | "STATIC"); | |
34d567d1 FR |
8876 | return MATCH_ERROR; |
8877 | } | |
8878 | ||
8879 | gfc_match (" ::"); | |
8880 | ||
8881 | for (;;) | |
8882 | { | |
8883 | m = gfc_match_symbol (&sym, 0); | |
8884 | switch (m) | |
8885 | { | |
8886 | case MATCH_NO: | |
8887 | break; | |
8888 | ||
8889 | case MATCH_ERROR: | |
8890 | return MATCH_ERROR; | |
8891 | ||
8892 | case MATCH_YES: | |
8893 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
8894 | &gfc_current_locus)) | |
8895 | return MATCH_ERROR; | |
8896 | seen_symbol = true; | |
8897 | break; | |
8898 | } | |
8899 | ||
8900 | if (gfc_match_eos () == MATCH_YES) | |
8901 | break; | |
8902 | if (gfc_match_char (',') != MATCH_YES) | |
8903 | goto syntax; | |
8904 | } | |
8905 | ||
8906 | if (!seen_symbol) | |
8907 | { | |
8908 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
8909 | return MATCH_ERROR; | |
8910 | } | |
8911 | ||
8912 | return MATCH_YES; | |
8913 | ||
8914 | syntax: | |
8915 | gfc_error ("Syntax error in STATIC statement at %C"); | |
8916 | return MATCH_ERROR; | |
8917 | } | |
8918 | ||
8919 | ||
6de9cd9a DN |
8920 | /* Save statements have a special syntax. */ |
8921 | ||
8922 | match | |
8923 | gfc_match_save (void) | |
8924 | { | |
9056bd70 TS |
8925 | char n[GFC_MAX_SYMBOL_LEN+1]; |
8926 | gfc_common_head *c; | |
6de9cd9a DN |
8927 | gfc_symbol *sym; |
8928 | match m; | |
8929 | ||
8930 | if (gfc_match_eos () == MATCH_YES) | |
8931 | { | |
8932 | if (gfc_current_ns->seen_save) | |
8933 | { | |
524af0d6 JB |
8934 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
8935 | "follows previous SAVE statement")) | |
09e87839 | 8936 | return MATCH_ERROR; |
6de9cd9a DN |
8937 | } |
8938 | ||
8939 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
8940 | return MATCH_YES; | |
8941 | } | |
8942 | ||
8943 | if (gfc_current_ns->save_all) | |
8944 | { | |
524af0d6 JB |
8945 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
8946 | "blanket SAVE statement")) | |
09e87839 | 8947 | return MATCH_ERROR; |
6de9cd9a DN |
8948 | } |
8949 | ||
8950 | gfc_match (" ::"); | |
8951 | ||
8952 | for (;;) | |
8953 | { | |
8954 | m = gfc_match_symbol (&sym, 0); | |
8955 | switch (m) | |
8956 | { | |
8957 | case MATCH_YES: | |
70112e2a | 8958 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 8959 | &gfc_current_locus)) |
6de9cd9a DN |
8960 | return MATCH_ERROR; |
8961 | goto next_item; | |
8962 | ||
8963 | case MATCH_NO: | |
8964 | break; | |
8965 | ||
8966 | case MATCH_ERROR: | |
8967 | return MATCH_ERROR; | |
8968 | } | |
8969 | ||
9056bd70 | 8970 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
8971 | if (m == MATCH_ERROR) |
8972 | return MATCH_ERROR; | |
8973 | if (m == MATCH_NO) | |
8974 | goto syntax; | |
8975 | ||
53814b8f | 8976 | c = gfc_get_common (n, 0); |
9056bd70 TS |
8977 | c->saved = 1; |
8978 | ||
6de9cd9a DN |
8979 | gfc_current_ns->seen_save = 1; |
8980 | ||
8981 | next_item: | |
8982 | if (gfc_match_eos () == MATCH_YES) | |
8983 | break; | |
8984 | if (gfc_match_char (',') != MATCH_YES) | |
8985 | goto syntax; | |
8986 | } | |
8987 | ||
8988 | return MATCH_YES; | |
8989 | ||
8990 | syntax: | |
8991 | gfc_error ("Syntax error in SAVE statement at %C"); | |
8992 | return MATCH_ERROR; | |
8993 | } | |
8994 | ||
8995 | ||
06469efd PT |
8996 | match |
8997 | gfc_match_value (void) | |
8998 | { | |
8999 | gfc_symbol *sym; | |
9000 | match m; | |
9001 | ||
9abe5e56 DK |
9002 | /* This is not allowed within a BLOCK construct! */ |
9003 | if (gfc_current_state () == COMP_BLOCK) | |
9004 | { | |
9005 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9006 | return MATCH_ERROR; | |
9007 | } | |
9008 | ||
524af0d6 | 9009 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9010 | return MATCH_ERROR; |
9011 | ||
9012 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9013 | { | |
9014 | return MATCH_ERROR; | |
9015 | } | |
9016 | ||
9017 | if (gfc_match_eos () == MATCH_YES) | |
9018 | goto syntax; | |
9019 | ||
9020 | for(;;) | |
9021 | { | |
9022 | m = gfc_match_symbol (&sym, 0); | |
9023 | switch (m) | |
9024 | { | |
9025 | case MATCH_YES: | |
524af0d6 | 9026 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9027 | return MATCH_ERROR; |
9028 | goto next_item; | |
9029 | ||
9030 | case MATCH_NO: | |
9031 | break; | |
9032 | ||
9033 | case MATCH_ERROR: | |
9034 | return MATCH_ERROR; | |
9035 | } | |
9036 | ||
9037 | next_item: | |
9038 | if (gfc_match_eos () == MATCH_YES) | |
9039 | break; | |
9040 | if (gfc_match_char (',') != MATCH_YES) | |
9041 | goto syntax; | |
9042 | } | |
9043 | ||
9044 | return MATCH_YES; | |
9045 | ||
9046 | syntax: | |
9047 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9048 | return MATCH_ERROR; | |
9049 | } | |
9050 | ||
66e4ab31 | 9051 | |
775e6c3a TB |
9052 | match |
9053 | gfc_match_volatile (void) | |
9054 | { | |
9055 | gfc_symbol *sym; | |
9056 | match m; | |
9057 | ||
524af0d6 | 9058 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9059 | return MATCH_ERROR; |
9060 | ||
9061 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9062 | { | |
9063 | return MATCH_ERROR; | |
9064 | } | |
9065 | ||
9066 | if (gfc_match_eos () == MATCH_YES) | |
9067 | goto syntax; | |
9068 | ||
9069 | for(;;) | |
9070 | { | |
f5acf0f2 | 9071 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9072 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9073 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9074 | switch (m) |
9075 | { | |
9076 | case MATCH_YES: | |
be59db2d TB |
9077 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9078 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9079 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9080 | { | |
c4100eae | 9081 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9082 | "%C, which is use-/host-associated", sym->name); |
9083 | return MATCH_ERROR; | |
9084 | } | |
524af0d6 | 9085 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9086 | return MATCH_ERROR; |
9087 | goto next_item; | |
9088 | ||
9089 | case MATCH_NO: | |
9090 | break; | |
9091 | ||
9092 | case MATCH_ERROR: | |
9093 | return MATCH_ERROR; | |
9094 | } | |
9095 | ||
9096 | next_item: | |
9097 | if (gfc_match_eos () == MATCH_YES) | |
9098 | break; | |
9099 | if (gfc_match_char (',') != MATCH_YES) | |
9100 | goto syntax; | |
9101 | } | |
9102 | ||
9103 | return MATCH_YES; | |
9104 | ||
9105 | syntax: | |
9106 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9107 | return MATCH_ERROR; | |
9108 | } | |
9109 | ||
9110 | ||
1eee5628 TB |
9111 | match |
9112 | gfc_match_asynchronous (void) | |
9113 | { | |
9114 | gfc_symbol *sym; | |
9115 | match m; | |
9116 | ||
524af0d6 | 9117 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9118 | return MATCH_ERROR; |
9119 | ||
9120 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9121 | { | |
9122 | return MATCH_ERROR; | |
9123 | } | |
9124 | ||
9125 | if (gfc_match_eos () == MATCH_YES) | |
9126 | goto syntax; | |
9127 | ||
9128 | for(;;) | |
9129 | { | |
f5acf0f2 | 9130 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9131 | symbols locally. */ |
9132 | m = gfc_match_symbol (&sym, 1); | |
9133 | switch (m) | |
9134 | { | |
9135 | case MATCH_YES: | |
524af0d6 | 9136 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9137 | return MATCH_ERROR; |
9138 | goto next_item; | |
9139 | ||
9140 | case MATCH_NO: | |
9141 | break; | |
9142 | ||
9143 | case MATCH_ERROR: | |
9144 | return MATCH_ERROR; | |
9145 | } | |
9146 | ||
9147 | next_item: | |
9148 | if (gfc_match_eos () == MATCH_YES) | |
9149 | break; | |
9150 | if (gfc_match_char (',') != MATCH_YES) | |
9151 | goto syntax; | |
9152 | } | |
9153 | ||
9154 | return MATCH_YES; | |
9155 | ||
9156 | syntax: | |
9157 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9158 | return MATCH_ERROR; | |
9159 | } | |
9160 | ||
9161 | ||
4668d6f9 PT |
9162 | /* Match a module procedure statement in a submodule. */ |
9163 | ||
9164 | match | |
9165 | gfc_match_submod_proc (void) | |
9166 | { | |
9167 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9168 | gfc_symbol *sym, *fsym; | |
9169 | match m; | |
9170 | gfc_formal_arglist *formal, *head, *tail; | |
9171 | ||
9172 | if (gfc_current_state () != COMP_CONTAINS | |
9173 | || !(gfc_state_stack->previous | |
70112e2a PT |
9174 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9175 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9176 | return MATCH_NO; |
9177 | ||
9178 | m = gfc_match (" module% procedure% %n", name); | |
9179 | if (m != MATCH_YES) | |
9180 | return m; | |
9181 | ||
9182 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9183 | "at %C")) | |
9184 | return MATCH_ERROR; | |
9185 | ||
9186 | if (get_proc_name (name, &sym, false)) | |
9187 | return MATCH_ERROR; | |
9188 | ||
9189 | /* Make sure that the result field is appropriately filled, even though | |
9190 | the result symbol will be replaced later on. */ | |
c064374d | 9191 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9192 | { |
c064374d PT |
9193 | if (sym->tlink->result |
9194 | && sym->tlink->result != sym->tlink) | |
9195 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9196 | else |
9197 | sym->result = sym; | |
9198 | } | |
9199 | ||
9200 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9201 | the symbol existed before. */ | |
9202 | sym->declared_at = gfc_current_locus; | |
9203 | ||
9204 | if (!sym->attr.module_procedure) | |
9205 | return MATCH_ERROR; | |
9206 | ||
9207 | /* Signal match_end to expect "end procedure". */ | |
9208 | sym->abr_modproc_decl = 1; | |
9209 | ||
9210 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9211 | sym->attr.if_source = IFSRC_DECL; | |
9212 | ||
9213 | gfc_new_block = sym; | |
9214 | ||
9215 | /* Make a new formal arglist with the symbols in the procedure | |
9216 | namespace. */ | |
9217 | head = tail = NULL; | |
9218 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9219 | { | |
9220 | if (formal == sym->formal) | |
9221 | head = tail = gfc_get_formal_arglist (); | |
9222 | else | |
9223 | { | |
9224 | tail->next = gfc_get_formal_arglist (); | |
9225 | tail = tail->next; | |
9226 | } | |
9227 | ||
9228 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9229 | goto cleanup; | |
9230 | ||
9231 | tail->sym = fsym; | |
9232 | gfc_set_sym_referenced (fsym); | |
9233 | } | |
9234 | ||
9235 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9236 | interface declaration is cleared. This allows us to add the | |
9237 | explicit interface as is done for other type of procedure. */ | |
9238 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9239 | &gfc_current_locus)) | |
9240 | return MATCH_ERROR; | |
9241 | ||
9242 | if (gfc_match_eos () != MATCH_YES) | |
9243 | { | |
9244 | gfc_syntax_error (ST_MODULE_PROC); | |
9245 | return MATCH_ERROR; | |
9246 | } | |
9247 | ||
9248 | return MATCH_YES; | |
9249 | ||
9250 | cleanup: | |
9251 | gfc_free_formal_arglist (head); | |
9252 | return MATCH_ERROR; | |
9253 | } | |
9254 | ||
9255 | ||
6de9cd9a DN |
9256 | /* Match a module procedure statement. Note that we have to modify |
9257 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9258 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9259 | |
9260 | match | |
9261 | gfc_match_modproc (void) | |
9262 | { | |
9263 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9264 | gfc_symbol *sym; | |
9265 | match m; | |
162b5a21 | 9266 | locus old_locus; |
060fca4a | 9267 | gfc_namespace *module_ns; |
2b77e908 | 9268 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9269 | |
9270 | if (gfc_state_stack->state != COMP_INTERFACE | |
9271 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9272 | || current_interface.type == INTERFACE_NAMELESS |
9273 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9274 | { |
636dff67 SK |
9275 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9276 | "interface"); | |
6de9cd9a DN |
9277 | return MATCH_ERROR; |
9278 | } | |
9279 | ||
060fca4a PT |
9280 | module_ns = gfc_current_ns->parent; |
9281 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9282 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9283 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9284 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9285 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9286 | break; |
9287 | ||
9288 | if (module_ns == NULL) | |
9289 | return MATCH_ERROR; | |
9290 | ||
2b77e908 FXC |
9291 | /* Store the current state of the interface. We will need it if we |
9292 | end up with a syntax error and need to recover. */ | |
9293 | old_interface_head = gfc_current_interface_head (); | |
9294 | ||
162b5a21 SK |
9295 | /* Check if the F2008 optional double colon appears. */ |
9296 | gfc_gobble_whitespace (); | |
9297 | old_locus = gfc_current_locus; | |
9298 | if (gfc_match ("::") == MATCH_YES) | |
9299 | { | |
524af0d6 JB |
9300 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9301 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9302 | return MATCH_ERROR; |
9303 | } | |
9304 | else | |
9305 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9306 | |
6de9cd9a DN |
9307 | for (;;) |
9308 | { | |
2b77e908 | 9309 | bool last = false; |
162b5a21 | 9310 | old_locus = gfc_current_locus; |
2b77e908 | 9311 | |
6de9cd9a DN |
9312 | m = gfc_match_name (name); |
9313 | if (m == MATCH_NO) | |
9314 | goto syntax; | |
9315 | if (m != MATCH_YES) | |
9316 | return MATCH_ERROR; | |
9317 | ||
2b77e908 FXC |
9318 | /* Check for syntax error before starting to add symbols to the |
9319 | current namespace. */ | |
9320 | if (gfc_match_eos () == MATCH_YES) | |
9321 | last = true; | |
162b5a21 | 9322 | |
2b77e908 FXC |
9323 | if (!last && gfc_match_char (',') != MATCH_YES) |
9324 | goto syntax; | |
9325 | ||
9326 | /* Now we're sure the syntax is valid, we process this item | |
9327 | further. */ | |
060fca4a | 9328 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9329 | return MATCH_ERROR; |
9330 | ||
43dfd40c SK |
9331 | if (sym->attr.intrinsic) |
9332 | { | |
9333 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9334 | "PROCEDURE", &old_locus); | |
9335 | return MATCH_ERROR; | |
9336 | } | |
9337 | ||
6de9cd9a | 9338 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9339 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9340 | return MATCH_ERROR; |
9341 | ||
524af0d6 | 9342 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9343 | return MATCH_ERROR; |
9344 | ||
71f77fd7 | 9345 | sym->attr.mod_proc = 1; |
43dfd40c | 9346 | sym->declared_at = old_locus; |
71f77fd7 | 9347 | |
2b77e908 | 9348 | if (last) |
6de9cd9a | 9349 | break; |
6de9cd9a DN |
9350 | } |
9351 | ||
9352 | return MATCH_YES; | |
9353 | ||
9354 | syntax: | |
2b77e908 FXC |
9355 | /* Restore the previous state of the interface. */ |
9356 | interface = gfc_current_interface_head (); | |
9357 | gfc_set_current_interface_head (old_interface_head); | |
9358 | ||
9359 | /* Free the new interfaces. */ | |
9360 | while (interface != old_interface_head) | |
9361 | { | |
9362 | gfc_interface *i = interface->next; | |
cede9502 | 9363 | free (interface); |
2b77e908 FXC |
9364 | interface = i; |
9365 | } | |
9366 | ||
9367 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9368 | gfc_syntax_error (ST_MODULE_PROC); |
9369 | return MATCH_ERROR; | |
9370 | } | |
9371 | ||
9372 | ||
7d1f1e61 | 9373 | /* Check a derived type that is being extended. */ |
42e3d759 | 9374 | |
7d1f1e61 PT |
9375 | static gfc_symbol* |
9376 | check_extended_derived_type (char *name) | |
9377 | { | |
9378 | gfc_symbol *extended; | |
9379 | ||
9380 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9381 | { | |
9382 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9383 | return NULL; | |
9384 | } | |
9385 | ||
42e3d759 JW |
9386 | extended = gfc_find_dt_in_generic (extended); |
9387 | ||
9388 | /* F08:C428. */ | |
7d1f1e61 PT |
9389 | if (!extended) |
9390 | { | |
c4100eae | 9391 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9392 | return NULL; |
9393 | } | |
9394 | ||
9395 | if (extended->attr.flavor != FL_DERIVED) | |
9396 | { | |
c4100eae | 9397 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9398 | "derived type", name); |
9399 | return NULL; | |
9400 | } | |
9401 | ||
9402 | if (extended->attr.is_bind_c) | |
9403 | { | |
c4100eae | 9404 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9405 | "is BIND(C)", extended->name); |
9406 | return NULL; | |
9407 | } | |
9408 | ||
9409 | if (extended->attr.sequence) | |
9410 | { | |
c4100eae | 9411 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9412 | "is a SEQUENCE type", extended->name); |
9413 | return NULL; | |
9414 | } | |
9415 | ||
9416 | return extended; | |
9417 | } | |
9418 | ||
9419 | ||
a8b3b0b6 CR |
9420 | /* Match the optional attribute specifiers for a type declaration. |
9421 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9422 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9423 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9424 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9425 | |
9426 | match | |
7d1f1e61 | 9427 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9428 | { |
a8b3b0b6 | 9429 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9430 | if (gfc_match (" , private") == MATCH_YES) |
9431 | { | |
d51347f9 | 9432 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9433 | { |
d51347f9 TB |
9434 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9435 | "specification part of a module"); | |
6de9cd9a DN |
9436 | return MATCH_ERROR; |
9437 | } | |
9438 | ||
524af0d6 | 9439 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9440 | return MATCH_ERROR; |
6de9cd9a | 9441 | } |
a8b3b0b6 | 9442 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9443 | { |
d51347f9 | 9444 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9445 | { |
d51347f9 TB |
9446 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9447 | "specification part of a module"); | |
6de9cd9a DN |
9448 | return MATCH_ERROR; |
9449 | } | |
9450 | ||
524af0d6 | 9451 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9452 | return MATCH_ERROR; |
6de9cd9a | 9453 | } |
52f49934 | 9454 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9455 | { |
9456 | /* If the type is defined to be bind(c) it then needs to make | |
9457 | sure that all fields are interoperable. This will | |
9458 | need to be a semantic check on the finished derived type. | |
9459 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9460 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9461 | return MATCH_ERROR; |
9462 | ||
9463 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9464 | } | |
52f49934 DK |
9465 | else if (gfc_match (" , abstract") == MATCH_YES) |
9466 | { | |
524af0d6 | 9467 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9468 | return MATCH_ERROR; |
9469 | ||
524af0d6 | 9470 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9471 | return MATCH_ERROR; |
9472 | } | |
524af0d6 | 9473 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9474 | { |
524af0d6 | 9475 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9476 | return MATCH_ERROR; |
9477 | } | |
a8b3b0b6 CR |
9478 | else |
9479 | return MATCH_NO; | |
9480 | ||
9481 | /* If we get here, something matched. */ | |
9482 | return MATCH_YES; | |
9483 | } | |
9484 | ||
9485 | ||
f6288c24 FR |
9486 | /* Common function for type declaration blocks similar to derived types, such |
9487 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9488 | does NOT have a generic symbol matching the name given by the user. | |
9489 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9490 | for the creation of an independent symbol. | |
6442a6f4 | 9491 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9492 | type to be created, and the flavor to add to the resulting symbol. */ |
9493 | ||
9494 | static bool | |
9495 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9496 | gfc_symbol **result) | |
9497 | { | |
9498 | gfc_symbol *sym; | |
9499 | locus where; | |
9500 | ||
9501 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9502 | ||
9503 | if (decl) | |
9504 | where = *decl; | |
9505 | else | |
9506 | where = gfc_current_locus; | |
9507 | ||
9508 | if (gfc_get_symbol (name, NULL, &sym)) | |
9509 | return false; | |
9510 | ||
9511 | if (!sym) | |
9512 | { | |
9513 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9514 | return false; | |
9515 | } | |
9516 | ||
9517 | if (sym->components != NULL || sym->attr.zero_comp) | |
9518 | { | |
2f029c08 | 9519 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9520 | sym->name, &sym->declared_at); |
9521 | return false; | |
9522 | } | |
9523 | ||
9524 | sym->declared_at = where; | |
9525 | ||
9526 | if (sym->attr.flavor != fl | |
9527 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9528 | return false; | |
9529 | ||
9530 | if (!sym->hash_value) | |
9531 | /* Set the hash for the compound name for this type. */ | |
9532 | sym->hash_value = gfc_hash_value (sym); | |
9533 | ||
9534 | /* Normally the type is expected to have been completely parsed by the time | |
9535 | a field declaration with this type is seen. For unions, maps, and nested | |
9536 | structure declarations, we need to indicate that it is okay that we | |
9537 | haven't seen any components yet. This will be updated after the structure | |
9538 | is fully parsed. */ | |
9539 | sym->attr.zero_comp = 0; | |
9540 | ||
9541 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9542 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9543 | ||
9544 | if (result) *result = sym; | |
9545 | ||
9546 | return true; | |
9547 | } | |
9548 | ||
9549 | ||
9550 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9551 | behaves identical to STRUCTURE blocks. */ | |
9552 | ||
9553 | match | |
9554 | gfc_match_map (void) | |
9555 | { | |
05b8fcb4 FR |
9556 | /* Counter used to give unique internal names to map structures. */ |
9557 | static unsigned int gfc_map_id = 0; | |
9558 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9559 | gfc_symbol *sym; | |
9560 | locus old_loc; | |
f6288c24 | 9561 | |
05b8fcb4 | 9562 | old_loc = gfc_current_locus; |
f6288c24 | 9563 | |
05b8fcb4 FR |
9564 | if (gfc_match_eos () != MATCH_YES) |
9565 | { | |
9566 | gfc_error ("Junk after MAP statement at %C"); | |
9567 | gfc_current_locus = old_loc; | |
9568 | return MATCH_ERROR; | |
9569 | } | |
f6288c24 | 9570 | |
05b8fcb4 FR |
9571 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9572 | which are invalid Fortran identifiers. */ | |
9573 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9574 | |
05b8fcb4 FR |
9575 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9576 | return MATCH_ERROR; | |
f6288c24 | 9577 | |
05b8fcb4 | 9578 | gfc_new_block = sym; |
f6288c24 | 9579 | |
05b8fcb4 | 9580 | return MATCH_YES; |
f6288c24 FR |
9581 | } |
9582 | ||
9583 | ||
9584 | /* Match the opening of a UNION block. */ | |
9585 | ||
9586 | match | |
9587 | gfc_match_union (void) | |
9588 | { | |
05b8fcb4 FR |
9589 | /* Counter used to give unique internal names to union types. */ |
9590 | static unsigned int gfc_union_id = 0; | |
9591 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9592 | gfc_symbol *sym; | |
9593 | locus old_loc; | |
f6288c24 | 9594 | |
05b8fcb4 | 9595 | old_loc = gfc_current_locus; |
f6288c24 | 9596 | |
05b8fcb4 FR |
9597 | if (gfc_match_eos () != MATCH_YES) |
9598 | { | |
9599 | gfc_error ("Junk after UNION statement at %C"); | |
9600 | gfc_current_locus = old_loc; | |
9601 | return MATCH_ERROR; | |
9602 | } | |
f6288c24 | 9603 | |
05b8fcb4 FR |
9604 | /* Unions are anonymous so we make up unique names for the symbol table |
9605 | which are invalid Fortran identifiers. */ | |
9606 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9607 | |
05b8fcb4 FR |
9608 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9609 | return MATCH_ERROR; | |
f6288c24 | 9610 | |
05b8fcb4 | 9611 | gfc_new_block = sym; |
f6288c24 | 9612 | |
05b8fcb4 | 9613 | return MATCH_YES; |
f6288c24 FR |
9614 | } |
9615 | ||
9616 | ||
9617 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9618 | matching the beginning of a derived type declaration with a few | |
9619 | twists. The resulting type symbol has no access control or other | |
9620 | interesting attributes. */ | |
9621 | ||
9622 | match | |
9623 | gfc_match_structure_decl (void) | |
9624 | { | |
05b8fcb4 FR |
9625 | /* Counter used to give unique internal names to anonymous structures. */ |
9626 | static unsigned int gfc_structure_id = 0; | |
9627 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9628 | gfc_symbol *sym; | |
9629 | match m; | |
9630 | locus where; | |
f6288c24 | 9631 | |
05b8fcb4 FR |
9632 | if (!flag_dec_structure) |
9633 | { | |
cf004230 FR |
9634 | gfc_error ("%s at %C is a DEC extension, enable with " |
9635 | "%<-fdec-structure%>", | |
9636 | "STRUCTURE"); | |
05b8fcb4 FR |
9637 | return MATCH_ERROR; |
9638 | } | |
f6288c24 | 9639 | |
05b8fcb4 | 9640 | name[0] = '\0'; |
f6288c24 | 9641 | |
05b8fcb4 FR |
9642 | m = gfc_match (" /%n/", name); |
9643 | if (m != MATCH_YES) | |
9644 | { | |
9645 | /* Non-nested structure declarations require a structure name. */ | |
9646 | if (!gfc_comp_struct (gfc_current_state ())) | |
9647 | { | |
9648 | gfc_error ("Structure name expected in non-nested structure " | |
9649 | "declaration at %C"); | |
9650 | return MATCH_ERROR; | |
9651 | } | |
9652 | /* This is an anonymous structure; make up a unique name for it | |
9653 | (upper-case letters never make it to symbol names from the source). | |
9654 | The important thing is initializing the type variable | |
9655 | and setting gfc_new_symbol, which is immediately used by | |
9656 | parse_structure () and variable_decl () to add components of | |
9657 | this type. */ | |
9658 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9659 | } | |
f6288c24 | 9660 | |
05b8fcb4 FR |
9661 | where = gfc_current_locus; |
9662 | /* No field list allowed after non-nested structure declaration. */ | |
9663 | if (!gfc_comp_struct (gfc_current_state ()) | |
9664 | && gfc_match_eos () != MATCH_YES) | |
9665 | { | |
9666 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9667 | return MATCH_ERROR; | |
9668 | } | |
f6288c24 | 9669 | |
05b8fcb4 FR |
9670 | /* Make sure the name is not the name of an intrinsic type. */ |
9671 | if (gfc_is_intrinsic_typename (name)) | |
9672 | { | |
2f029c08 | 9673 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
9674 | " intrinsic type", name); |
9675 | return MATCH_ERROR; | |
9676 | } | |
f6288c24 | 9677 | |
05b8fcb4 FR |
9678 | /* Store the actual type symbol for the structure with an upper-case first |
9679 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 9680 | |
51f03c6b | 9681 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 9682 | return MATCH_ERROR; |
f6288c24 | 9683 | |
05b8fcb4 FR |
9684 | gfc_new_block = sym; |
9685 | return MATCH_YES; | |
f6288c24 FR |
9686 | } |
9687 | ||
90051c26 FR |
9688 | |
9689 | /* This function does some work to determine which matcher should be used to | |
9690 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE | |
9691 | * as an alias for PRINT from derived type declarations, TYPE IS statements, | |
9692 | * and derived type data declarations. */ | |
9693 | ||
9694 | match | |
9695 | gfc_match_type (gfc_statement *st) | |
9696 | { | |
9697 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9698 | match m; | |
9699 | locus old_loc; | |
9700 | ||
9701 | /* Requires -fdec. */ | |
9702 | if (!flag_dec) | |
9703 | return MATCH_NO; | |
9704 | ||
9705 | m = gfc_match ("type"); | |
9706 | if (m != MATCH_YES) | |
9707 | return m; | |
9708 | /* If we already have an error in the buffer, it is probably from failing to | |
9709 | * match a derived type data declaration. Let it happen. */ | |
9710 | else if (gfc_error_flag_test ()) | |
9711 | return MATCH_NO; | |
9712 | ||
9713 | old_loc = gfc_current_locus; | |
9714 | *st = ST_NONE; | |
9715 | ||
9716 | /* If we see an attribute list before anything else it's definitely a derived | |
9717 | * type declaration. */ | |
9718 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
9719 | { | |
9720 | gfc_current_locus = old_loc; | |
9721 | *st = ST_DERIVED_DECL; | |
9722 | return gfc_match_derived_decl (); | |
9723 | } | |
9724 | ||
9725 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9726 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9727 | m = gfc_match_name (name); | |
9728 | if (m != MATCH_YES) | |
9729 | { | |
9730 | /* Let print match if it can, otherwise throw an error from | |
9731 | * gfc_match_derived_decl. */ | |
9732 | gfc_current_locus = old_loc; | |
9733 | if (gfc_match_print () == MATCH_YES) | |
9734 | { | |
9735 | *st = ST_WRITE; | |
9736 | return MATCH_YES; | |
9737 | } | |
9738 | gfc_current_locus = old_loc; | |
9739 | *st = ST_DERIVED_DECL; | |
9740 | return gfc_match_derived_decl (); | |
9741 | } | |
9742 | ||
9743 | /* A derived type declaration requires an EOS. Without it, assume print. */ | |
9744 | m = gfc_match_eos (); | |
9745 | if (m == MATCH_NO) | |
9746 | { | |
9747 | /* Check manually for TYPE IS (... - this is invalid print syntax. */ | |
9748 | if (strncmp ("is", name, 3) == 0 | |
9749 | && gfc_match (" (", name) == MATCH_YES) | |
9750 | { | |
9751 | gfc_current_locus = old_loc; | |
9752 | gcc_assert (gfc_match (" is") == MATCH_YES); | |
9753 | *st = ST_TYPE_IS; | |
9754 | return gfc_match_type_is (); | |
9755 | } | |
9756 | gfc_current_locus = old_loc; | |
9757 | *st = ST_WRITE; | |
9758 | return gfc_match_print (); | |
9759 | } | |
9760 | else | |
9761 | { | |
9762 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9763 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9764 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9765 | * symbol which can be printed. */ | |
9766 | gfc_current_locus = old_loc; | |
9767 | m = gfc_match_derived_decl (); | |
9768 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9769 | { | |
9770 | *st = ST_DERIVED_DECL; | |
9771 | return m; | |
9772 | } | |
9773 | gfc_current_locus = old_loc; | |
9774 | *st = ST_WRITE; | |
9775 | return gfc_match_print (); | |
9776 | } | |
9777 | ||
9778 | return MATCH_NO; | |
9779 | } | |
9780 | ||
9781 | ||
a8b3b0b6 CR |
9782 | /* Match the beginning of a derived type declaration. If a type name |
9783 | was the result of a function, then it is possible to have a symbol | |
9784 | already to be known as a derived type yet have no components. */ | |
9785 | ||
9786 | match | |
9787 | gfc_match_derived_decl (void) | |
9788 | { | |
9789 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 9790 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 9791 | symbol_attribute attr; |
c3f34952 | 9792 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 9793 | gfc_symbol *extended; |
a8b3b0b6 CR |
9794 | match m; |
9795 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 9796 | bool seen_attr = false; |
c3f34952 | 9797 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
9798 | bool parameterized_type = false; |
9799 | bool seen_colons = false; | |
a8b3b0b6 | 9800 | |
f6288c24 | 9801 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
9802 | return MATCH_NO; |
9803 | ||
7d1f1e61 PT |
9804 | name[0] = '\0'; |
9805 | parent[0] = '\0'; | |
a8b3b0b6 | 9806 | gfc_clear_attr (&attr); |
7d1f1e61 | 9807 | extended = NULL; |
a8b3b0b6 CR |
9808 | |
9809 | do | |
9810 | { | |
7d1f1e61 | 9811 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
9812 | if (is_type_attr_spec == MATCH_ERROR) |
9813 | return MATCH_ERROR; | |
e7303e85 FXC |
9814 | if (is_type_attr_spec == MATCH_YES) |
9815 | seen_attr = true; | |
a8b3b0b6 | 9816 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 9817 | |
63a3341a PT |
9818 | /* Deal with derived type extensions. The extension attribute has |
9819 | been added to 'attr' but now the parent type must be found and | |
9820 | checked. */ | |
7d1f1e61 PT |
9821 | if (parent[0]) |
9822 | extended = check_extended_derived_type (parent); | |
9823 | ||
9824 | if (parent[0] && !extended) | |
9825 | return MATCH_ERROR; | |
9826 | ||
5bab4c96 PT |
9827 | m = gfc_match (" ::"); |
9828 | if (m == MATCH_YES) | |
9829 | { | |
9830 | seen_colons = true; | |
9831 | } | |
9832 | else if (seen_attr) | |
6de9cd9a DN |
9833 | { |
9834 | gfc_error ("Expected :: in TYPE definition at %C"); | |
9835 | return MATCH_ERROR; | |
9836 | } | |
9837 | ||
5bab4c96 | 9838 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
9839 | if (m != MATCH_YES) |
9840 | return m; | |
9841 | ||
5bab4c96 PT |
9842 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
9843 | derived type named 'is'. | |
9844 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
9845 | and checking if this is a(n intrinsic) typename. his picks up | |
9846 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
9847 | if (gfc_peek_ascii_char () == '(') | |
9848 | { | |
9849 | if (gfc_current_state () == COMP_SELECT_TYPE | |
9850 | || (!seen_colons && !strcmp (name, "is"))) | |
9851 | return MATCH_NO; | |
9852 | parameterized_type = true; | |
9853 | } | |
9854 | ||
9855 | m = gfc_match_eos (); | |
9856 | if (m != MATCH_YES && !parameterized_type) | |
9857 | return m; | |
9858 | ||
e9c06563 TB |
9859 | /* Make sure the name is not the name of an intrinsic type. */ |
9860 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 9861 | { |
c4100eae | 9862 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 9863 | "type", name); |
6de9cd9a DN |
9864 | return MATCH_ERROR; |
9865 | } | |
9866 | ||
c3f34952 | 9867 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
9868 | return MATCH_ERROR; |
9869 | ||
c3f34952 | 9870 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 9871 | { |
c4100eae | 9872 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
9873 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
9874 | return MATCH_ERROR; | |
9875 | } | |
9876 | ||
9877 | if (!gensym->attr.generic | |
524af0d6 | 9878 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
9879 | return MATCH_ERROR; |
9880 | ||
9881 | if (!gensym->attr.function | |
524af0d6 | 9882 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
9883 | return MATCH_ERROR; |
9884 | ||
9885 | sym = gfc_find_dt_in_generic (gensym); | |
9886 | ||
9887 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
9888 | { | |
c4100eae | 9889 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 9890 | "defined", sym->name); |
6de9cd9a DN |
9891 | return MATCH_ERROR; |
9892 | } | |
9893 | ||
c3f34952 TB |
9894 | if (!sym) |
9895 | { | |
9896 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 9897 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 9898 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
9899 | head = gensym->generic; |
9900 | intr = gfc_get_interface (); | |
9901 | intr->sym = sym; | |
9902 | intr->where = gfc_current_locus; | |
9903 | intr->sym->declared_at = gfc_current_locus; | |
9904 | intr->next = head; | |
9905 | gensym->generic = intr; | |
9906 | gensym->attr.if_source = IFSRC_DECL; | |
9907 | } | |
9908 | ||
6de9cd9a DN |
9909 | /* The symbol may already have the derived attribute without the |
9910 | components. The ways this can happen is via a function | |
9911 | definition, an INTRINSIC statement or a subtype in another | |
9912 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 9913 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 9914 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 9915 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
9916 | return MATCH_ERROR; |
9917 | ||
6de9cd9a | 9918 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 9919 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 9920 | return MATCH_ERROR; |
c3f34952 TB |
9921 | else if (sym->attr.access == ACCESS_UNKNOWN |
9922 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 9923 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 9924 | sym->name, NULL)) |
c3f34952 TB |
9925 | return MATCH_ERROR; |
9926 | ||
9927 | if (sym->attr.access != ACCESS_UNKNOWN | |
9928 | && gensym->attr.access == ACCESS_UNKNOWN) | |
9929 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 9930 | |
a8b3b0b6 CR |
9931 | /* See if the derived type was labeled as bind(c). */ |
9932 | if (attr.is_bind_c != 0) | |
9933 | sym->attr.is_bind_c = attr.is_bind_c; | |
9934 | ||
34523524 DK |
9935 | /* Construct the f2k_derived namespace if it is not yet there. */ |
9936 | if (!sym->f2k_derived) | |
9937 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 9938 | |
5bab4c96 PT |
9939 | if (parameterized_type) |
9940 | { | |
276515e6 PT |
9941 | /* Ignore error or mismatches by going to the end of the statement |
9942 | in order to avoid the component declarations causing problems. */ | |
9943 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
9944 | if (m != MATCH_YES) | |
9945 | gfc_error_recovery (); | |
5bab4c96 PT |
9946 | m = gfc_match_eos (); |
9947 | if (m != MATCH_YES) | |
f59986b2 PT |
9948 | { |
9949 | gfc_error_recovery (); | |
9950 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
9951 | } | |
5bab4c96 PT |
9952 | sym->attr.pdt_template = 1; |
9953 | } | |
9954 | ||
7d1f1e61 PT |
9955 | if (extended && !sym->components) |
9956 | { | |
9957 | gfc_component *p; | |
5bab4c96 | 9958 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
9959 | |
9960 | /* Add the extended derived type as the first component. */ | |
9961 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
9962 | extended->refs++; |
9963 | gfc_set_sym_referenced (extended); | |
9964 | ||
9965 | p->ts.type = BT_DERIVED; | |
bc21d315 | 9966 | p->ts.u.derived = extended; |
7d1f1e61 | 9967 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 9968 | |
7c1dab0d JW |
9969 | /* Set extension level. */ |
9970 | if (extended->attr.extension == 255) | |
9971 | { | |
9972 | /* Since the extension field is 8 bit wide, we can only have | |
9973 | up to 255 extension levels. */ | |
c4100eae | 9974 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
9975 | extended->name, &extended->declared_at); |
9976 | return MATCH_ERROR; | |
9977 | } | |
9978 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
9979 | |
9980 | /* Provide the links between the extended type and its extension. */ | |
9981 | if (!extended->f2k_derived) | |
9982 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
9983 | |
9984 | /* Copy the extended type-param-name-list from the extended type, | |
9985 | append those of the extension and add the whole lot to the | |
9986 | extension. */ | |
9987 | if (extended->attr.pdt_template) | |
9988 | { | |
9989 | g = h = NULL; | |
9990 | sym->attr.pdt_template = 1; | |
9991 | for (f = extended->formal; f; f = f->next) | |
9992 | { | |
9993 | if (f == extended->formal) | |
9994 | { | |
9995 | g = gfc_get_formal_arglist (); | |
9996 | h = g; | |
9997 | } | |
9998 | else | |
9999 | { | |
10000 | g->next = gfc_get_formal_arglist (); | |
10001 | g = g->next; | |
10002 | } | |
10003 | g->sym = f->sym; | |
10004 | } | |
10005 | g->next = sym->formal; | |
10006 | sym->formal = h; | |
10007 | } | |
7d1f1e61 PT |
10008 | } |
10009 | ||
7c1dab0d JW |
10010 | if (!sym->hash_value) |
10011 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10012 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10013 | |
52f49934 DK |
10014 | /* Take over the ABSTRACT attribute. */ |
10015 | sym->attr.abstract = attr.abstract; | |
10016 | ||
6de9cd9a DN |
10017 | gfc_new_block = sym; |
10018 | ||
10019 | return MATCH_YES; | |
10020 | } | |
83d890b9 AL |
10021 | |
10022 | ||
f5acf0f2 | 10023 | /* Cray Pointees can be declared as: |
b3aefde2 | 10024 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10025 | |
32e8bb8e | 10026 | match |
83d890b9 AL |
10027 | gfc_mod_pointee_as (gfc_array_spec *as) |
10028 | { | |
10029 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10030 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10031 | as->cp_was_assumed = true; |
83d890b9 AL |
10032 | else if (as->type == AS_ASSUMED_SHAPE) |
10033 | { | |
10034 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10035 | return MATCH_ERROR; | |
10036 | } | |
10037 | return MATCH_YES; | |
10038 | } | |
25d8f0a2 TS |
10039 | |
10040 | ||
f5acf0f2 PT |
10041 | /* Match the enum definition statement, here we are trying to match |
10042 | the first line of enum definition statement. | |
25d8f0a2 TS |
10043 | Returns MATCH_YES if match is found. */ |
10044 | ||
10045 | match | |
10046 | gfc_match_enum (void) | |
10047 | { | |
10048 | match m; | |
f5acf0f2 | 10049 | |
25d8f0a2 TS |
10050 | m = gfc_match_eos (); |
10051 | if (m != MATCH_YES) | |
10052 | return m; | |
10053 | ||
524af0d6 | 10054 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10055 | return MATCH_ERROR; |
10056 | ||
10057 | return MATCH_YES; | |
10058 | } | |
10059 | ||
10060 | ||
31224396 SK |
10061 | /* Returns an initializer whose value is one higher than the value of the |
10062 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10063 | initializers value will be set to zero. The initializer's kind | |
10064 | will be set to gfc_c_int_kind. | |
10065 | ||
10066 | If -fshort-enums is given, the appropriate kind will be selected | |
10067 | later after all enumerators have been parsed. A warning is issued | |
10068 | here if an initializer exceeds gfc_c_int_kind. */ | |
10069 | ||
10070 | static gfc_expr * | |
10071 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10072 | { | |
10073 | gfc_expr *result; | |
b7e75771 | 10074 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10075 | |
10076 | mpz_init (result->value.integer); | |
10077 | ||
10078 | if (last_initializer != NULL) | |
10079 | { | |
10080 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10081 | result->where = last_initializer->where; | |
10082 | ||
10083 | if (gfc_check_integer_range (result->value.integer, | |
10084 | gfc_c_int_kind) != ARITH_OK) | |
10085 | { | |
10086 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10087 | return NULL; | |
10088 | } | |
10089 | } | |
10090 | else | |
10091 | { | |
10092 | /* Control comes here, if it's the very first enumerator and no | |
10093 | initializer has been given. It will be initialized to zero. */ | |
10094 | mpz_set_si (result->value.integer, 0); | |
10095 | } | |
10096 | ||
10097 | return result; | |
10098 | } | |
10099 | ||
10100 | ||
6133c68a TS |
10101 | /* Match a variable name with an optional initializer. When this |
10102 | subroutine is called, a variable is expected to be parsed next. | |
10103 | Depending on what is happening at the moment, updates either the | |
10104 | symbol table or the current interface. */ | |
10105 | ||
10106 | static match | |
10107 | enumerator_decl (void) | |
10108 | { | |
10109 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10110 | gfc_expr *initializer; | |
10111 | gfc_array_spec *as = NULL; | |
10112 | gfc_symbol *sym; | |
10113 | locus var_locus; | |
10114 | match m; | |
524af0d6 | 10115 | bool t; |
6133c68a TS |
10116 | locus old_locus; |
10117 | ||
10118 | initializer = NULL; | |
10119 | old_locus = gfc_current_locus; | |
10120 | ||
10121 | /* When we get here, we've just matched a list of attributes and | |
10122 | maybe a type and a double colon. The next thing we expect to see | |
10123 | is the name of the symbol. */ | |
10124 | m = gfc_match_name (name); | |
10125 | if (m != MATCH_YES) | |
10126 | goto cleanup; | |
10127 | ||
10128 | var_locus = gfc_current_locus; | |
10129 | ||
10130 | /* OK, we've successfully matched the declaration. Now put the | |
10131 | symbol in the current namespace. If we fail to create the symbol, | |
10132 | bail out. */ | |
524af0d6 | 10133 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10134 | { |
10135 | m = MATCH_ERROR; | |
10136 | goto cleanup; | |
10137 | } | |
10138 | ||
10139 | /* The double colon must be present in order to have initializers. | |
10140 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10141 | if (colon_seen) | |
10142 | { | |
10143 | if (gfc_match_char ('=') == MATCH_YES) | |
10144 | { | |
10145 | m = gfc_match_init_expr (&initializer); | |
10146 | if (m == MATCH_NO) | |
10147 | { | |
10148 | gfc_error ("Expected an initialization expression at %C"); | |
10149 | m = MATCH_ERROR; | |
10150 | } | |
10151 | ||
10152 | if (m != MATCH_YES) | |
10153 | goto cleanup; | |
10154 | } | |
10155 | } | |
10156 | ||
10157 | /* If we do not have an initializer, the initialization value of the | |
10158 | previous enumerator (stored in last_initializer) is incremented | |
10159 | by 1 and is used to initialize the current enumerator. */ | |
10160 | if (initializer == NULL) | |
31224396 | 10161 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10162 | |
6133c68a TS |
10163 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10164 | { | |
01e64c3d JJ |
10165 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10166 | &var_locus); | |
d51347f9 | 10167 | m = MATCH_ERROR; |
6133c68a TS |
10168 | goto cleanup; |
10169 | } | |
10170 | ||
10171 | /* Store this current initializer, for the next enumerator variable | |
10172 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10173 | use last_initializer below. */ | |
10174 | last_initializer = initializer; | |
10175 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10176 | ||
10177 | /* Maintain enumerator history. */ | |
10178 | gfc_find_symbol (name, NULL, 0, &sym); | |
10179 | create_enum_history (sym, last_initializer); | |
10180 | ||
524af0d6 | 10181 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10182 | |
10183 | cleanup: | |
10184 | /* Free stuff up and return. */ | |
10185 | gfc_free_expr (initializer); | |
10186 | ||
10187 | return m; | |
10188 | } | |
10189 | ||
10190 | ||
66e4ab31 | 10191 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10192 | |
10193 | match | |
10194 | gfc_match_enumerator_def (void) | |
10195 | { | |
10196 | match m; | |
524af0d6 | 10197 | bool t; |
d51347f9 | 10198 | |
25d8f0a2 | 10199 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10200 | |
25d8f0a2 TS |
10201 | m = gfc_match (" enumerator"); |
10202 | if (m != MATCH_YES) | |
10203 | return m; | |
6133c68a TS |
10204 | |
10205 | m = gfc_match (" :: "); | |
10206 | if (m == MATCH_ERROR) | |
10207 | return m; | |
10208 | ||
10209 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10210 | |
25d8f0a2 TS |
10211 | if (gfc_current_state () != COMP_ENUM) |
10212 | { | |
10213 | gfc_error ("ENUM definition statement expected before %C"); | |
10214 | gfc_free_enum_history (); | |
10215 | return MATCH_ERROR; | |
10216 | } | |
10217 | ||
10218 | (¤t_ts)->type = BT_INTEGER; | |
10219 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10220 | |
6133c68a TS |
10221 | gfc_clear_attr (¤t_attr); |
10222 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10223 | if (!t) |
25d8f0a2 | 10224 | { |
6133c68a | 10225 | m = MATCH_ERROR; |
25d8f0a2 TS |
10226 | goto cleanup; |
10227 | } | |
10228 | ||
25d8f0a2 TS |
10229 | for (;;) |
10230 | { | |
6133c68a | 10231 | m = enumerator_decl (); |
25d8f0a2 | 10232 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10233 | { |
10234 | gfc_free_enum_history (); | |
10235 | goto cleanup; | |
10236 | } | |
25d8f0a2 TS |
10237 | if (m == MATCH_NO) |
10238 | break; | |
10239 | ||
10240 | if (gfc_match_eos () == MATCH_YES) | |
10241 | goto cleanup; | |
10242 | if (gfc_match_char (',') != MATCH_YES) | |
10243 | break; | |
10244 | } | |
10245 | ||
10246 | if (gfc_current_state () == COMP_ENUM) | |
10247 | { | |
10248 | gfc_free_enum_history (); | |
10249 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10250 | m = MATCH_ERROR; | |
10251 | } | |
10252 | ||
10253 | cleanup: | |
10254 | gfc_free_array_spec (current_as); | |
10255 | current_as = NULL; | |
10256 | return m; | |
10257 | ||
10258 | } | |
10259 | ||
f6fad28e | 10260 | |
30b608eb DK |
10261 | /* Match binding attributes. */ |
10262 | ||
10263 | static match | |
713485cc | 10264 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10265 | { |
10266 | bool found_passing = false; | |
713485cc | 10267 | bool seen_ptr = false; |
90661f26 | 10268 | match m = MATCH_YES; |
30b608eb | 10269 | |
eea58adb | 10270 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10271 | this case the defaults are in there. */ |
10272 | ba->access = ACCESS_UNKNOWN; | |
10273 | ba->pass_arg = NULL; | |
10274 | ba->pass_arg_num = 0; | |
10275 | ba->nopass = 0; | |
10276 | ba->non_overridable = 0; | |
b0e5fa94 | 10277 | ba->deferred = 0; |
90661f26 | 10278 | ba->ppc = ppc; |
30b608eb DK |
10279 | |
10280 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10281 | m = gfc_match_char (','); |
10282 | if (m == MATCH_NO) | |
10283 | goto done; | |
30b608eb DK |
10284 | |
10285 | do | |
10286 | { | |
e157f736 DK |
10287 | /* Access specifier. */ |
10288 | ||
10289 | m = gfc_match (" public"); | |
30b608eb DK |
10290 | if (m == MATCH_ERROR) |
10291 | goto error; | |
10292 | if (m == MATCH_YES) | |
10293 | { | |
e157f736 | 10294 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10295 | { |
e157f736 | 10296 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10297 | goto error; |
10298 | } | |
10299 | ||
e157f736 | 10300 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10301 | continue; |
10302 | } | |
10303 | ||
e157f736 | 10304 | m = gfc_match (" private"); |
30b608eb DK |
10305 | if (m == MATCH_ERROR) |
10306 | goto error; | |
10307 | if (m == MATCH_YES) | |
10308 | { | |
e157f736 | 10309 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10310 | { |
e157f736 | 10311 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10312 | goto error; |
10313 | } | |
10314 | ||
e157f736 | 10315 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10316 | continue; |
10317 | } | |
10318 | ||
e157f736 DK |
10319 | /* If inside GENERIC, the following is not allowed. */ |
10320 | if (!generic) | |
30b608eb | 10321 | { |
30b608eb | 10322 | |
e157f736 DK |
10323 | /* NOPASS flag. */ |
10324 | m = gfc_match (" nopass"); | |
10325 | if (m == MATCH_ERROR) | |
10326 | goto error; | |
10327 | if (m == MATCH_YES) | |
30b608eb | 10328 | { |
e157f736 DK |
10329 | if (found_passing) |
10330 | { | |
10331 | gfc_error ("Binding attributes already specify passing," | |
10332 | " illegal NOPASS at %C"); | |
10333 | goto error; | |
10334 | } | |
10335 | ||
10336 | found_passing = true; | |
10337 | ba->nopass = 1; | |
10338 | continue; | |
30b608eb DK |
10339 | } |
10340 | ||
e157f736 DK |
10341 | /* PASS possibly including argument. */ |
10342 | m = gfc_match (" pass"); | |
10343 | if (m == MATCH_ERROR) | |
10344 | goto error; | |
10345 | if (m == MATCH_YES) | |
30b608eb | 10346 | { |
e157f736 DK |
10347 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10348 | ||
10349 | if (found_passing) | |
10350 | { | |
10351 | gfc_error ("Binding attributes already specify passing," | |
10352 | " illegal PASS at %C"); | |
10353 | goto error; | |
10354 | } | |
10355 | ||
10356 | m = gfc_match (" ( %n )", arg); | |
10357 | if (m == MATCH_ERROR) | |
10358 | goto error; | |
10359 | if (m == MATCH_YES) | |
51f03c6b | 10360 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10361 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10362 | ||
10363 | found_passing = true; | |
10364 | ba->nopass = 0; | |
10365 | continue; | |
30b608eb DK |
10366 | } |
10367 | ||
713485cc JW |
10368 | if (ppc) |
10369 | { | |
10370 | /* POINTER flag. */ | |
10371 | m = gfc_match (" pointer"); | |
10372 | if (m == MATCH_ERROR) | |
10373 | goto error; | |
10374 | if (m == MATCH_YES) | |
10375 | { | |
10376 | if (seen_ptr) | |
10377 | { | |
10378 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10379 | goto error; | |
10380 | } | |
10381 | ||
10382 | seen_ptr = true; | |
713485cc JW |
10383 | continue; |
10384 | } | |
10385 | } | |
10386 | else | |
10387 | { | |
10388 | /* NON_OVERRIDABLE flag. */ | |
10389 | m = gfc_match (" non_overridable"); | |
10390 | if (m == MATCH_ERROR) | |
10391 | goto error; | |
10392 | if (m == MATCH_YES) | |
10393 | { | |
10394 | if (ba->non_overridable) | |
10395 | { | |
10396 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10397 | goto error; | |
10398 | } | |
10399 | ||
10400 | ba->non_overridable = 1; | |
10401 | continue; | |
10402 | } | |
10403 | ||
10404 | /* DEFERRED flag. */ | |
10405 | m = gfc_match (" deferred"); | |
10406 | if (m == MATCH_ERROR) | |
10407 | goto error; | |
10408 | if (m == MATCH_YES) | |
10409 | { | |
10410 | if (ba->deferred) | |
10411 | { | |
10412 | gfc_error ("Duplicate DEFERRED at %C"); | |
10413 | goto error; | |
10414 | } | |
10415 | ||
10416 | ba->deferred = 1; | |
10417 | continue; | |
10418 | } | |
10419 | } | |
10420 | ||
30b608eb DK |
10421 | } |
10422 | ||
10423 | /* Nothing matching found. */ | |
e157f736 DK |
10424 | if (generic) |
10425 | gfc_error ("Expected access-specifier at %C"); | |
10426 | else | |
10427 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10428 | goto error; |
10429 | } | |
10430 | while (gfc_match_char (',') == MATCH_YES); | |
10431 | ||
b0e5fa94 DK |
10432 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10433 | if (ba->non_overridable && ba->deferred) | |
10434 | { | |
10435 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10436 | goto error; | |
10437 | } | |
10438 | ||
90661f26 JW |
10439 | m = MATCH_YES; |
10440 | ||
10441 | done: | |
e157f736 DK |
10442 | if (ba->access == ACCESS_UNKNOWN) |
10443 | ba->access = gfc_typebound_default_access; | |
10444 | ||
713485cc JW |
10445 | if (ppc && !seen_ptr) |
10446 | { | |
10447 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10448 | " at %C"); | |
10449 | goto error; | |
10450 | } | |
10451 | ||
90661f26 | 10452 | return m; |
30b608eb DK |
10453 | |
10454 | error: | |
30b608eb DK |
10455 | return MATCH_ERROR; |
10456 | } | |
10457 | ||
10458 | ||
10459 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10460 | ||
10461 | static match | |
10462 | match_procedure_in_type (void) | |
10463 | { | |
10464 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10465 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10466 | char* target = NULL, *ifc = NULL; |
3e15518b | 10467 | gfc_typebound_proc tb; |
30b608eb DK |
10468 | bool seen_colons; |
10469 | bool seen_attrs; | |
10470 | match m; | |
10471 | gfc_symtree* stree; | |
10472 | gfc_namespace* ns; | |
10473 | gfc_symbol* block; | |
1be17993 | 10474 | int num; |
30b608eb DK |
10475 | |
10476 | /* Check current state. */ | |
10477 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10478 | block = gfc_state_stack->previous->sym; | |
10479 | gcc_assert (block); | |
10480 | ||
b0e5fa94 | 10481 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10482 | if (gfc_match (" (") == MATCH_YES) |
10483 | { | |
b0e5fa94 DK |
10484 | m = gfc_match_name (target_buf); |
10485 | if (m == MATCH_ERROR) | |
10486 | return m; | |
10487 | if (m != MATCH_YES) | |
10488 | { | |
a4d9b221 | 10489 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10490 | return MATCH_ERROR; |
10491 | } | |
10492 | ||
10493 | if (gfc_match (" )") != MATCH_YES) | |
10494 | { | |
a4d9b221 | 10495 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10496 | return MATCH_ERROR; |
10497 | } | |
10498 | ||
1be17993 | 10499 | ifc = target_buf; |
30b608eb DK |
10500 | } |
10501 | ||
10502 | /* Construct the data structure. */ | |
ff5b6492 | 10503 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10504 | tb.where = gfc_current_locus; |
30b608eb DK |
10505 | |
10506 | /* Match binding attributes. */ | |
3e15518b | 10507 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10508 | if (m == MATCH_ERROR) |
10509 | return m; | |
10510 | seen_attrs = (m == MATCH_YES); | |
10511 | ||
1be17993 | 10512 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10513 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10514 | { |
10515 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10516 | return MATCH_ERROR; | |
10517 | } | |
3e15518b | 10518 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10519 | { |
10520 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10521 | return MATCH_ERROR; | |
10522 | } | |
10523 | ||
30b608eb DK |
10524 | /* Match the colons. */ |
10525 | m = gfc_match (" ::"); | |
10526 | if (m == MATCH_ERROR) | |
10527 | return m; | |
10528 | seen_colons = (m == MATCH_YES); | |
10529 | if (seen_attrs && !seen_colons) | |
10530 | { | |
a4d9b221 | 10531 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10532 | return MATCH_ERROR; |
10533 | } | |
10534 | ||
f5acf0f2 | 10535 | /* Match the binding names. */ |
1be17993 | 10536 | for(num=1;;num++) |
30b608eb | 10537 | { |
1be17993 JW |
10538 | m = gfc_match_name (name); |
10539 | if (m == MATCH_ERROR) | |
10540 | return m; | |
10541 | if (m == MATCH_NO) | |
b0e5fa94 | 10542 | { |
1be17993 | 10543 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10544 | return MATCH_ERROR; |
10545 | } | |
10546 | ||
524af0d6 | 10547 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10548 | return MATCH_ERROR; |
30b608eb | 10549 | |
1be17993 JW |
10550 | /* Try to match the '=> target', if it's there. */ |
10551 | target = ifc; | |
10552 | m = gfc_match (" =>"); | |
30b608eb DK |
10553 | if (m == MATCH_ERROR) |
10554 | return m; | |
1be17993 | 10555 | if (m == MATCH_YES) |
30b608eb | 10556 | { |
3e15518b | 10557 | if (tb.deferred) |
1be17993 | 10558 | { |
a4d9b221 | 10559 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10560 | return MATCH_ERROR; |
10561 | } | |
10562 | ||
10563 | if (!seen_colons) | |
10564 | { | |
a4d9b221 | 10565 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10566 | " at %C"); |
10567 | return MATCH_ERROR; | |
10568 | } | |
10569 | ||
10570 | m = gfc_match_name (target_buf); | |
10571 | if (m == MATCH_ERROR) | |
10572 | return m; | |
10573 | if (m == MATCH_NO) | |
10574 | { | |
a4d9b221 | 10575 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10576 | return MATCH_ERROR; |
10577 | } | |
10578 | target = target_buf; | |
30b608eb | 10579 | } |
30b608eb | 10580 | |
1be17993 JW |
10581 | /* If no target was found, it has the same name as the binding. */ |
10582 | if (!target) | |
10583 | target = name; | |
30b608eb | 10584 | |
1be17993 JW |
10585 | /* Get the namespace to insert the symbols into. */ |
10586 | ns = block->f2k_derived; | |
10587 | gcc_assert (ns); | |
30b608eb | 10588 | |
1be17993 | 10589 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10590 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10591 | { |
c4100eae | 10592 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10593 | "is not ABSTRACT", block->name); |
10594 | return MATCH_ERROR; | |
10595 | } | |
30b608eb | 10596 | |
1be17993 | 10597 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10598 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10599 | be already there but then typebound is still NULL. */ |
10600 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10601 | if (stree && stree->n.tb) |
1be17993 | 10602 | { |
c4100eae MLI |
10603 | gfc_error ("There is already a procedure with binding name %qs for " |
10604 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10605 | return MATCH_ERROR; |
10606 | } | |
b0e5fa94 | 10607 | |
1be17993 | 10608 | /* Insert it and set attributes. */ |
30b608eb | 10609 | |
9f23af48 MM |
10610 | if (!stree) |
10611 | { | |
10612 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10613 | gcc_assert (stree); | |
10614 | } | |
3e15518b | 10615 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 10616 | |
3e15518b JW |
10617 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10618 | false)) | |
1be17993 | 10619 | return MATCH_ERROR; |
3e15518b | 10620 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
10621 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10622 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 10623 | |
1be17993 JW |
10624 | if (gfc_match_eos () == MATCH_YES) |
10625 | return MATCH_YES; | |
10626 | if (gfc_match_char (',') != MATCH_YES) | |
10627 | goto syntax; | |
e34ccb4c | 10628 | } |
30b608eb | 10629 | |
1be17993 JW |
10630 | syntax: |
10631 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10632 | return MATCH_ERROR; | |
30b608eb DK |
10633 | } |
10634 | ||
10635 | ||
e157f736 DK |
10636 | /* Match a GENERIC procedure binding inside a derived type. */ |
10637 | ||
10638 | match | |
10639 | gfc_match_generic (void) | |
10640 | { | |
10641 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 10642 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
10643 | gfc_symbol* block; |
10644 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10645 | gfc_typebound_proc* tb; | |
e157f736 | 10646 | gfc_namespace* ns; |
94747289 DK |
10647 | interface_type op_type; |
10648 | gfc_intrinsic_op op; | |
e157f736 DK |
10649 | match m; |
10650 | ||
10651 | /* Check current state. */ | |
10652 | if (gfc_current_state () == COMP_DERIVED) | |
10653 | { | |
10654 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10655 | return MATCH_ERROR; | |
10656 | } | |
10657 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10658 | return MATCH_NO; | |
10659 | block = gfc_state_stack->previous->sym; | |
10660 | ns = block->f2k_derived; | |
10661 | gcc_assert (block && ns); | |
10662 | ||
ff5b6492 MM |
10663 | memset (&tbattr, 0, sizeof (tbattr)); |
10664 | tbattr.where = gfc_current_locus; | |
10665 | ||
e157f736 | 10666 | /* See if we get an access-specifier. */ |
713485cc | 10667 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
10668 | if (m == MATCH_ERROR) |
10669 | goto error; | |
10670 | ||
10671 | /* Now the colons, those are required. */ | |
10672 | if (gfc_match (" ::") != MATCH_YES) | |
10673 | { | |
a4d9b221 | 10674 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
10675 | goto error; |
10676 | } | |
10677 | ||
94747289 DK |
10678 | /* Match the binding name; depending on type (operator / generic) format |
10679 | it for future error messages into bind_name. */ | |
f5acf0f2 | 10680 | |
94747289 | 10681 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
10682 | if (m == MATCH_ERROR) |
10683 | return MATCH_ERROR; | |
10684 | if (m == MATCH_NO) | |
10685 | { | |
94747289 | 10686 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
10687 | goto error; |
10688 | } | |
10689 | ||
94747289 | 10690 | switch (op_type) |
e157f736 | 10691 | { |
94747289 | 10692 | case INTERFACE_GENERIC: |
e73d3ca6 | 10693 | case INTERFACE_DTIO: |
94747289 DK |
10694 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10695 | break; | |
f5acf0f2 | 10696 | |
94747289 DK |
10697 | case INTERFACE_USER_OP: |
10698 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10699 | break; | |
f5acf0f2 | 10700 | |
94747289 DK |
10701 | case INTERFACE_INTRINSIC_OP: |
10702 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10703 | gfc_op2string (op)); | |
10704 | break; | |
10705 | ||
377e37c1 SK |
10706 | case INTERFACE_NAMELESS: |
10707 | gfc_error ("Malformed GENERIC statement at %C"); | |
10708 | goto error; | |
10709 | break; | |
10710 | ||
94747289 DK |
10711 | default: |
10712 | gcc_unreachable (); | |
10713 | } | |
e34ccb4c | 10714 | |
94747289 DK |
10715 | /* Match the required =>. */ |
10716 | if (gfc_match (" =>") != MATCH_YES) | |
10717 | { | |
a4d9b221 | 10718 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
10719 | goto error; |
10720 | } | |
f5acf0f2 | 10721 | |
94747289 DK |
10722 | /* Try to find existing GENERIC binding with this name / for this operator; |
10723 | if there is something, check that it is another GENERIC and then extend | |
10724 | it rather than building a new node. Otherwise, create it and put it | |
10725 | at the right position. */ | |
10726 | ||
10727 | switch (op_type) | |
10728 | { | |
e73d3ca6 | 10729 | case INTERFACE_DTIO: |
94747289 DK |
10730 | case INTERFACE_USER_OP: |
10731 | case INTERFACE_GENERIC: | |
10732 | { | |
10733 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10734 | gfc_symtree* st; | |
10735 | ||
10736 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 10737 | tb = st ? st->n.tb : NULL; |
94747289 DK |
10738 | break; |
10739 | } | |
10740 | ||
10741 | case INTERFACE_INTRINSIC_OP: | |
10742 | tb = ns->tb_op[op]; | |
10743 | break; | |
10744 | ||
10745 | default: | |
10746 | gcc_unreachable (); | |
10747 | } | |
10748 | ||
10749 | if (tb) | |
10750 | { | |
e34ccb4c | 10751 | if (!tb->is_generic) |
e157f736 | 10752 | { |
94747289 | 10753 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 10754 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 10755 | " %qs for the derived type %qs at %C", |
94747289 | 10756 | bind_name, block->name); |
e157f736 DK |
10757 | goto error; |
10758 | } | |
10759 | ||
e157f736 DK |
10760 | if (tb->access != tbattr.access) |
10761 | { | |
10762 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 10763 | " defined binding %qs", bind_name); |
e157f736 DK |
10764 | goto error; |
10765 | } | |
10766 | } | |
10767 | else | |
10768 | { | |
3e15518b | 10769 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
10770 | tb->where = gfc_current_locus; |
10771 | tb->access = tbattr.access; | |
10772 | tb->is_generic = 1; | |
10773 | tb->u.generic = NULL; | |
94747289 DK |
10774 | |
10775 | switch (op_type) | |
10776 | { | |
e73d3ca6 | 10777 | case INTERFACE_DTIO: |
94747289 DK |
10778 | case INTERFACE_GENERIC: |
10779 | case INTERFACE_USER_OP: | |
10780 | { | |
10781 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
10782 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10783 | &ns->tb_sym_root, name); | |
94747289 DK |
10784 | gcc_assert (st); |
10785 | st->n.tb = tb; | |
10786 | ||
10787 | break; | |
10788 | } | |
f5acf0f2 | 10789 | |
94747289 DK |
10790 | case INTERFACE_INTRINSIC_OP: |
10791 | ns->tb_op[op] = tb; | |
10792 | break; | |
10793 | ||
10794 | default: | |
10795 | gcc_unreachable (); | |
10796 | } | |
e157f736 DK |
10797 | } |
10798 | ||
10799 | /* Now, match all following names as specific targets. */ | |
10800 | do | |
10801 | { | |
10802 | gfc_symtree* target_st; | |
10803 | gfc_tbp_generic* target; | |
10804 | ||
10805 | m = gfc_match_name (name); | |
10806 | if (m == MATCH_ERROR) | |
10807 | goto error; | |
10808 | if (m == MATCH_NO) | |
10809 | { | |
10810 | gfc_error ("Expected specific binding name at %C"); | |
10811 | goto error; | |
10812 | } | |
10813 | ||
e34ccb4c | 10814 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
10815 | |
10816 | /* See if this is a duplicate specification. */ | |
10817 | for (target = tb->u.generic; target; target = target->next) | |
10818 | if (target_st == target->specific_st) | |
10819 | { | |
c4100eae MLI |
10820 | gfc_error ("%qs already defined as specific binding for the" |
10821 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
10822 | goto error; |
10823 | } | |
10824 | ||
e157f736 DK |
10825 | target = gfc_get_tbp_generic (); |
10826 | target->specific_st = target_st; | |
10827 | target->specific = NULL; | |
10828 | target->next = tb->u.generic; | |
218e1228 TB |
10829 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
10830 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
10831 | tb->u.generic = target; |
10832 | } | |
10833 | while (gfc_match (" ,") == MATCH_YES); | |
10834 | ||
10835 | /* Here should be the end. */ | |
10836 | if (gfc_match_eos () != MATCH_YES) | |
10837 | { | |
10838 | gfc_error ("Junk after GENERIC binding at %C"); | |
10839 | goto error; | |
10840 | } | |
10841 | ||
10842 | return MATCH_YES; | |
10843 | ||
10844 | error: | |
10845 | return MATCH_ERROR; | |
10846 | } | |
10847 | ||
10848 | ||
34523524 DK |
10849 | /* Match a FINAL declaration inside a derived type. */ |
10850 | ||
10851 | match | |
10852 | gfc_match_final_decl (void) | |
10853 | { | |
10854 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10855 | gfc_symbol* sym; | |
10856 | match m; | |
10857 | gfc_namespace* module_ns; | |
10858 | bool first, last; | |
30b608eb | 10859 | gfc_symbol* block; |
34523524 | 10860 | |
33344e0f JW |
10861 | if (gfc_current_form == FORM_FREE) |
10862 | { | |
10863 | char c = gfc_peek_ascii_char (); | |
10864 | if (!gfc_is_whitespace (c) && c != ':') | |
10865 | return MATCH_NO; | |
10866 | } | |
f5acf0f2 | 10867 | |
30b608eb | 10868 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 10869 | { |
33344e0f JW |
10870 | if (gfc_current_form == FORM_FIXED) |
10871 | return MATCH_NO; | |
10872 | ||
34523524 | 10873 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 10874 | "CONTAINS section"); |
34523524 DK |
10875 | return MATCH_ERROR; |
10876 | } | |
10877 | ||
30b608eb DK |
10878 | block = gfc_state_stack->previous->sym; |
10879 | gcc_assert (block); | |
34523524 | 10880 | |
30b608eb DK |
10881 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
10882 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
10883 | { |
10884 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
10885 | " specification part of a MODULE"); | |
10886 | return MATCH_ERROR; | |
10887 | } | |
10888 | ||
10889 | module_ns = gfc_current_ns; | |
10890 | gcc_assert (module_ns); | |
10891 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
10892 | ||
10893 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
10894 | if (gfc_match (" ::") == MATCH_ERROR) | |
10895 | return MATCH_ERROR; | |
10896 | ||
10897 | /* Match the sequence of procedure names. */ | |
10898 | first = true; | |
10899 | last = false; | |
10900 | do | |
10901 | { | |
10902 | gfc_finalizer* f; | |
10903 | ||
10904 | if (first && gfc_match_eos () == MATCH_YES) | |
10905 | { | |
10906 | gfc_error ("Empty FINAL at %C"); | |
10907 | return MATCH_ERROR; | |
10908 | } | |
10909 | ||
10910 | m = gfc_match_name (name); | |
10911 | if (m == MATCH_NO) | |
10912 | { | |
10913 | gfc_error ("Expected module procedure name at %C"); | |
10914 | return MATCH_ERROR; | |
10915 | } | |
10916 | else if (m != MATCH_YES) | |
10917 | return MATCH_ERROR; | |
10918 | ||
10919 | if (gfc_match_eos () == MATCH_YES) | |
10920 | last = true; | |
10921 | if (!last && gfc_match_char (',') != MATCH_YES) | |
10922 | { | |
a4d9b221 | 10923 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
10924 | return MATCH_ERROR; |
10925 | } | |
10926 | ||
10927 | if (gfc_get_symbol (name, module_ns, &sym)) | |
10928 | { | |
c4100eae | 10929 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
10930 | return MATCH_ERROR; |
10931 | } | |
10932 | ||
10933 | /* Mark the symbol as module procedure. */ | |
10934 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 10935 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
10936 | return MATCH_ERROR; |
10937 | ||
10938 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 10939 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 10940 | if (f->proc_sym == sym) |
34523524 | 10941 | { |
546c8974 | 10942 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
10943 | name); |
10944 | return MATCH_ERROR; | |
10945 | } | |
10946 | ||
10947 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 10948 | gcc_assert (block->f2k_derived); |
2050626a | 10949 | sym->refs++; |
ece3f663 | 10950 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
10951 | f->proc_sym = sym; |
10952 | f->proc_tree = NULL; | |
34523524 | 10953 | f->where = gfc_current_locus; |
30b608eb DK |
10954 | f->next = block->f2k_derived->finalizers; |
10955 | block->f2k_derived->finalizers = f; | |
34523524 DK |
10956 | |
10957 | first = false; | |
10958 | } | |
10959 | while (!last); | |
10960 | ||
10961 | return MATCH_YES; | |
10962 | } | |
08a6b8e0 TB |
10963 | |
10964 | ||
10965 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
10966 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
10967 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
10968 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
10969 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
10970 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
10971 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
10972 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
10973 | }; |
10974 | ||
10975 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
10976 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
10977 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
10978 | ||
10979 | TODO: We should support all GCC attributes using the same syntax for | |
10980 | the attribute list, i.e. the list in C | |
10981 | __attributes(( attribute-list )) | |
10982 | matches then | |
10983 | !GCC$ ATTRIBUTES attribute-list :: | |
10984 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
10985 | saved into a TREE. | |
10986 | ||
10987 | As there is absolutely no risk of confusion, we should never return | |
10988 | MATCH_NO. */ | |
10989 | match | |
10990 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 10991 | { |
08a6b8e0 TB |
10992 | symbol_attribute attr; |
10993 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10994 | unsigned id; | |
10995 | gfc_symbol *sym; | |
10996 | match m; | |
10997 | ||
10998 | gfc_clear_attr (&attr); | |
10999 | for(;;) | |
11000 | { | |
11001 | char ch; | |
11002 | ||
11003 | if (gfc_match_name (name) != MATCH_YES) | |
11004 | return MATCH_ERROR; | |
11005 | ||
11006 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11007 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11008 | break; | |
11009 | ||
11010 | if (id == EXT_ATTR_LAST) | |
11011 | { | |
11012 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11013 | return MATCH_ERROR; | |
11014 | } | |
11015 | ||
524af0d6 | 11016 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11017 | return MATCH_ERROR; |
11018 | ||
11019 | gfc_gobble_whitespace (); | |
11020 | ch = gfc_next_ascii_char (); | |
11021 | if (ch == ':') | |
11022 | { | |
11023 | /* This is the successful exit condition for the loop. */ | |
11024 | if (gfc_next_ascii_char () == ':') | |
11025 | break; | |
11026 | } | |
11027 | ||
11028 | if (ch == ',') | |
11029 | continue; | |
11030 | ||
11031 | goto syntax; | |
11032 | } | |
11033 | ||
11034 | if (gfc_match_eos () == MATCH_YES) | |
11035 | goto syntax; | |
11036 | ||
11037 | for(;;) | |
11038 | { | |
11039 | m = gfc_match_name (name); | |
11040 | if (m != MATCH_YES) | |
11041 | return m; | |
11042 | ||
11043 | if (find_special (name, &sym, true)) | |
11044 | return MATCH_ERROR; | |
f5acf0f2 | 11045 | |
08a6b8e0 TB |
11046 | sym->attr.ext_attr |= attr.ext_attr; |
11047 | ||
11048 | if (gfc_match_eos () == MATCH_YES) | |
11049 | break; | |
11050 | ||
11051 | if (gfc_match_char (',') != MATCH_YES) | |
11052 | goto syntax; | |
11053 | } | |
11054 | ||
11055 | return MATCH_YES; | |
11056 | ||
11057 | syntax: | |
11058 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11059 | return MATCH_ERROR; | |
11060 | } | |
170a8bd6 EB |
11061 | |
11062 | ||
11063 | /* Match a !GCC$ UNROLL statement of the form: | |
11064 | !GCC$ UNROLL n | |
11065 | ||
11066 | The parameter n is the number of times we are supposed to unroll. | |
11067 | ||
11068 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11069 | match | |
11070 | gfc_match_gcc_unroll (void) | |
11071 | { | |
11072 | int value; | |
11073 | ||
11074 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11075 | { | |
11076 | if (value < 0 || value > USHRT_MAX) | |
11077 | { | |
11078 | gfc_error ("%<GCC unroll%> directive requires a" | |
11079 | " non-negative integral constant" | |
11080 | " less than or equal to %u at %C", | |
11081 | USHRT_MAX | |
11082 | ); | |
11083 | return MATCH_ERROR; | |
11084 | } | |
11085 | if (gfc_match_eos () == MATCH_YES) | |
11086 | { | |
11087 | directive_unroll = value == 0 ? 1 : value; | |
11088 | return MATCH_YES; | |
11089 | } | |
11090 | } | |
11091 | ||
11092 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11093 | return MATCH_ERROR; | |
11094 | } |