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Commit | Line | Data |
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6de9cd9a | 1 | /* Declaration statement matcher |
f1f39033 | 2 | Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
636dff67 | 3 | Free Software Foundation, Inc. |
6de9cd9a DN |
4 | Contributed by Andy Vaught |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 10 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 11 | version. |
6de9cd9a | 12 | |
9fc4d79b TS |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 21 | |
6de9cd9a | 22 | #include "config.h" |
d22e4895 | 23 | #include "system.h" |
6de9cd9a DN |
24 | #include "gfortran.h" |
25 | #include "match.h" | |
26 | #include "parse.h" | |
cab129d1 | 27 | #include "flags.h" |
b7e75771 | 28 | #include "constructor.h" |
ca39e6f2 FXC |
29 | |
30 | /* Macros to access allocate memory for gfc_data_variable, | |
31 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
32 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
33 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
34 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
35 | |
36 | ||
2054fc29 | 37 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
38 | during a type-declaration statement. */ |
39 | ||
40 | static int old_char_selector; | |
41 | ||
46fa431d | 42 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
43 | statement, they get them from the following static variables. The |
44 | first part of a declaration sets these variables and the second | |
45 | part copies these into symbol structures. */ | |
46 | ||
47 | static gfc_typespec current_ts; | |
48 | ||
49 | static symbol_attribute current_attr; | |
50 | static gfc_array_spec *current_as; | |
51 | static int colon_seen; | |
52 | ||
a8b3b0b6 CR |
53 | /* The current binding label (if any). */ |
54 | static char curr_binding_label[GFC_MAX_BINDING_LABEL_LEN + 1]; | |
55 | /* Need to know how many identifiers are on the current data declaration | |
56 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
57 | static int num_idents_on_line; | |
58 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
59 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
60 | static int has_name_equals = 0; | |
61 | ||
25d8f0a2 TS |
62 | /* Initializer of the previous enumerator. */ |
63 | ||
64 | static gfc_expr *last_initializer; | |
65 | ||
66 | /* History of all the enumerators is maintained, so that | |
67 | kind values of all the enumerators could be updated depending | |
68 | upon the maximum initialized value. */ | |
69 | ||
70 | typedef struct enumerator_history | |
71 | { | |
72 | gfc_symbol *sym; | |
73 | gfc_expr *initializer; | |
74 | struct enumerator_history *next; | |
75 | } | |
76 | enumerator_history; | |
77 | ||
78 | /* Header of enum history chain. */ | |
79 | ||
80 | static enumerator_history *enum_history = NULL; | |
81 | ||
82 | /* Pointer of enum history node containing largest initializer. */ | |
83 | ||
84 | static enumerator_history *max_enum = NULL; | |
85 | ||
6de9cd9a DN |
86 | /* gfc_new_block points to the symbol of a newly matched block. */ |
87 | ||
88 | gfc_symbol *gfc_new_block; | |
89 | ||
1c8bcdf7 | 90 | bool gfc_matching_function; |
e2d29968 | 91 | |
6de9cd9a | 92 | |
294fbfc8 TS |
93 | /********************* DATA statement subroutines *********************/ |
94 | ||
2220652d PT |
95 | static bool in_match_data = false; |
96 | ||
97 | bool | |
98 | gfc_in_match_data (void) | |
99 | { | |
100 | return in_match_data; | |
101 | } | |
102 | ||
ca39e6f2 FXC |
103 | static void |
104 | set_in_match_data (bool set_value) | |
2220652d PT |
105 | { |
106 | in_match_data = set_value; | |
107 | } | |
108 | ||
294fbfc8 TS |
109 | /* Free a gfc_data_variable structure and everything beneath it. */ |
110 | ||
111 | static void | |
636dff67 | 112 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
113 | { |
114 | gfc_data_variable *q; | |
115 | ||
116 | for (; p; p = q) | |
117 | { | |
118 | q = p->next; | |
119 | gfc_free_expr (p->expr); | |
120 | gfc_free_iterator (&p->iter, 0); | |
121 | free_variable (p->list); | |
cede9502 | 122 | free (p); |
294fbfc8 TS |
123 | } |
124 | } | |
125 | ||
126 | ||
127 | /* Free a gfc_data_value structure and everything beneath it. */ | |
128 | ||
129 | static void | |
636dff67 | 130 | free_value (gfc_data_value *p) |
294fbfc8 TS |
131 | { |
132 | gfc_data_value *q; | |
133 | ||
134 | for (; p; p = q) | |
135 | { | |
136 | q = p->next; | |
c9d75a48 | 137 | mpz_clear (p->repeat); |
294fbfc8 | 138 | gfc_free_expr (p->expr); |
cede9502 | 139 | free (p); |
294fbfc8 TS |
140 | } |
141 | } | |
142 | ||
143 | ||
144 | /* Free a list of gfc_data structures. */ | |
145 | ||
146 | void | |
636dff67 | 147 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
148 | { |
149 | gfc_data *q; | |
150 | ||
151 | for (; p; p = q) | |
152 | { | |
153 | q = p->next; | |
294fbfc8 TS |
154 | free_variable (p->var); |
155 | free_value (p->value); | |
cede9502 | 156 | free (p); |
294fbfc8 TS |
157 | } |
158 | } | |
159 | ||
160 | ||
a9f6f1f2 | 161 | /* Free all data in a namespace. */ |
636dff67 | 162 | |
a9f6f1f2 | 163 | static void |
66e4ab31 | 164 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
165 | { |
166 | gfc_data *d; | |
167 | ||
168 | for (;ns->data;) | |
169 | { | |
170 | d = ns->data->next; | |
cede9502 | 171 | free (ns->data); |
a9f6f1f2 JD |
172 | ns->data = d; |
173 | } | |
174 | } | |
175 | ||
176 | ||
294fbfc8 TS |
177 | static match var_element (gfc_data_variable *); |
178 | ||
179 | /* Match a list of variables terminated by an iterator and a right | |
180 | parenthesis. */ | |
181 | ||
182 | static match | |
636dff67 | 183 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
184 | { |
185 | gfc_data_variable *tail, var; | |
186 | match m; | |
187 | ||
188 | m = var_element (&var); | |
189 | if (m == MATCH_ERROR) | |
190 | return MATCH_ERROR; | |
191 | if (m == MATCH_NO) | |
192 | goto syntax; | |
193 | ||
194 | tail = gfc_get_data_variable (); | |
195 | *tail = var; | |
196 | ||
197 | parent->list = tail; | |
198 | ||
199 | for (;;) | |
200 | { | |
201 | if (gfc_match_char (',') != MATCH_YES) | |
202 | goto syntax; | |
203 | ||
204 | m = gfc_match_iterator (&parent->iter, 1); | |
205 | if (m == MATCH_YES) | |
206 | break; | |
207 | if (m == MATCH_ERROR) | |
208 | return MATCH_ERROR; | |
209 | ||
210 | m = var_element (&var); | |
211 | if (m == MATCH_ERROR) | |
212 | return MATCH_ERROR; | |
213 | if (m == MATCH_NO) | |
214 | goto syntax; | |
215 | ||
216 | tail->next = gfc_get_data_variable (); | |
217 | tail = tail->next; | |
218 | ||
219 | *tail = var; | |
220 | } | |
221 | ||
222 | if (gfc_match_char (')') != MATCH_YES) | |
223 | goto syntax; | |
224 | return MATCH_YES; | |
225 | ||
226 | syntax: | |
227 | gfc_syntax_error (ST_DATA); | |
228 | return MATCH_ERROR; | |
229 | } | |
230 | ||
231 | ||
232 | /* Match a single element in a data variable list, which can be a | |
233 | variable-iterator list. */ | |
234 | ||
235 | static match | |
7b901ac4 | 236 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
237 | { |
238 | match m; | |
239 | gfc_symbol *sym; | |
240 | ||
7b901ac4 | 241 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
242 | |
243 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 244 | return var_list (new_var); |
294fbfc8 | 245 | |
7b901ac4 | 246 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
247 | if (m != MATCH_YES) |
248 | return m; | |
249 | ||
7b901ac4 | 250 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 251 | |
f37e928c DK |
252 | /* Symbol should already have an associated type. */ |
253 | if (gfc_check_symbol_typed (sym, gfc_current_ns, | |
254 | false, gfc_current_locus) == FAILURE) | |
255 | return MATCH_ERROR; | |
256 | ||
636dff67 SK |
257 | if (!sym->attr.function && gfc_current_ns->parent |
258 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 259 | { |
4075a94e | 260 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
e25a0da3 | 261 | "statement at %C", sym->name); |
294fbfc8 TS |
262 | return MATCH_ERROR; |
263 | } | |
264 | ||
4075a94e | 265 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 SK |
266 | && sym->attr.in_common |
267 | && gfc_notify_std (GFC_STD_GNU, "Extension: initialization of " | |
268 | "common block variable '%s' in DATA statement at %C", | |
269 | sym->name) == FAILURE) | |
4075a94e | 270 | return MATCH_ERROR; |
294fbfc8 | 271 | |
7b901ac4 | 272 | if (gfc_add_data (&sym->attr, sym->name, &new_var->expr->where) == FAILURE) |
294fbfc8 TS |
273 | return MATCH_ERROR; |
274 | ||
275 | return MATCH_YES; | |
276 | } | |
277 | ||
278 | ||
279 | /* Match the top-level list of data variables. */ | |
280 | ||
281 | static match | |
636dff67 | 282 | top_var_list (gfc_data *d) |
294fbfc8 | 283 | { |
7b901ac4 | 284 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
285 | match m; |
286 | ||
287 | tail = NULL; | |
288 | ||
289 | for (;;) | |
290 | { | |
291 | m = var_element (&var); | |
292 | if (m == MATCH_NO) | |
293 | goto syntax; | |
294 | if (m == MATCH_ERROR) | |
295 | return MATCH_ERROR; | |
296 | ||
7b901ac4 KG |
297 | new_var = gfc_get_data_variable (); |
298 | *new_var = var; | |
294fbfc8 TS |
299 | |
300 | if (tail == NULL) | |
7b901ac4 | 301 | d->var = new_var; |
294fbfc8 | 302 | else |
7b901ac4 | 303 | tail->next = new_var; |
294fbfc8 | 304 | |
7b901ac4 | 305 | tail = new_var; |
294fbfc8 TS |
306 | |
307 | if (gfc_match_char ('/') == MATCH_YES) | |
308 | break; | |
309 | if (gfc_match_char (',') != MATCH_YES) | |
310 | goto syntax; | |
311 | } | |
312 | ||
313 | return MATCH_YES; | |
314 | ||
315 | syntax: | |
316 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 317 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
318 | return MATCH_ERROR; |
319 | } | |
320 | ||
321 | ||
322 | static match | |
636dff67 | 323 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
324 | { |
325 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 326 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
327 | gfc_expr *expr; |
328 | match m; | |
36d3fb4c | 329 | locus old_loc; |
294fbfc8 TS |
330 | |
331 | m = gfc_match_literal_constant (&expr, 1); | |
332 | if (m == MATCH_YES) | |
333 | { | |
334 | *result = expr; | |
335 | return MATCH_YES; | |
336 | } | |
337 | ||
338 | if (m == MATCH_ERROR) | |
339 | return MATCH_ERROR; | |
340 | ||
341 | m = gfc_match_null (result); | |
342 | if (m != MATCH_NO) | |
343 | return m; | |
344 | ||
36d3fb4c PT |
345 | old_loc = gfc_current_locus; |
346 | ||
347 | /* Should this be a structure component, try to match it | |
348 | before matching a name. */ | |
349 | m = gfc_match_rvalue (result); | |
350 | if (m == MATCH_ERROR) | |
351 | return m; | |
352 | ||
353 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
354 | { | |
355 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
356 | m = MATCH_ERROR; | |
357 | return m; | |
358 | } | |
359 | ||
360 | gfc_current_locus = old_loc; | |
361 | ||
294fbfc8 TS |
362 | m = gfc_match_name (name); |
363 | if (m != MATCH_YES) | |
364 | return m; | |
365 | ||
366 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
367 | return MATCH_ERROR; | |
368 | ||
c3f34952 TB |
369 | if (sym && sym->attr.generic) |
370 | dt_sym = gfc_find_dt_in_generic (sym); | |
371 | ||
294fbfc8 | 372 | if (sym == NULL |
c3f34952 TB |
373 | || (sym->attr.flavor != FL_PARAMETER |
374 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
294fbfc8 TS |
375 | { |
376 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
377 | name); | |
378 | return MATCH_ERROR; | |
379 | } | |
c3f34952 TB |
380 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
381 | return gfc_match_structure_constructor (dt_sym, result); | |
294fbfc8 | 382 | |
d46e0870 JD |
383 | /* Check to see if the value is an initialization array expression. */ |
384 | if (sym->value->expr_type == EXPR_ARRAY) | |
385 | { | |
386 | gfc_current_locus = old_loc; | |
387 | ||
388 | m = gfc_match_init_expr (result); | |
389 | if (m == MATCH_ERROR) | |
390 | return m; | |
391 | ||
392 | if (m == MATCH_YES) | |
393 | { | |
394 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
395 | m = MATCH_ERROR; | |
396 | ||
397 | if ((*result)->expr_type == EXPR_CONSTANT) | |
398 | return m; | |
399 | else | |
400 | { | |
401 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
402 | return MATCH_ERROR; | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
294fbfc8 TS |
407 | *result = gfc_copy_expr (sym->value); |
408 | return MATCH_YES; | |
409 | } | |
410 | ||
411 | ||
412 | /* Match a list of values in a DATA statement. The leading '/' has | |
413 | already been seen at this point. */ | |
414 | ||
415 | static match | |
636dff67 | 416 | top_val_list (gfc_data *data) |
294fbfc8 | 417 | { |
7b901ac4 | 418 | gfc_data_value *new_val, *tail; |
294fbfc8 | 419 | gfc_expr *expr; |
294fbfc8 TS |
420 | match m; |
421 | ||
422 | tail = NULL; | |
423 | ||
424 | for (;;) | |
425 | { | |
426 | m = match_data_constant (&expr); | |
427 | if (m == MATCH_NO) | |
428 | goto syntax; | |
429 | if (m == MATCH_ERROR) | |
430 | return MATCH_ERROR; | |
431 | ||
7b901ac4 KG |
432 | new_val = gfc_get_data_value (); |
433 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
434 | |
435 | if (tail == NULL) | |
7b901ac4 | 436 | data->value = new_val; |
294fbfc8 | 437 | else |
7b901ac4 | 438 | tail->next = new_val; |
294fbfc8 | 439 | |
7b901ac4 | 440 | tail = new_val; |
294fbfc8 TS |
441 | |
442 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
443 | { | |
444 | tail->expr = expr; | |
f2112868 | 445 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
446 | } |
447 | else | |
448 | { | |
f2112868 SK |
449 | if (expr->ts.type == BT_INTEGER) |
450 | mpz_set (tail->repeat, expr->value.integer); | |
294fbfc8 | 451 | gfc_free_expr (expr); |
294fbfc8 TS |
452 | |
453 | m = match_data_constant (&tail->expr); | |
454 | if (m == MATCH_NO) | |
455 | goto syntax; | |
456 | if (m == MATCH_ERROR) | |
457 | return MATCH_ERROR; | |
458 | } | |
459 | ||
460 | if (gfc_match_char ('/') == MATCH_YES) | |
461 | break; | |
462 | if (gfc_match_char (',') == MATCH_NO) | |
463 | goto syntax; | |
464 | } | |
465 | ||
466 | return MATCH_YES; | |
467 | ||
468 | syntax: | |
469 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 470 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
471 | return MATCH_ERROR; |
472 | } | |
473 | ||
474 | ||
475 | /* Matches an old style initialization. */ | |
476 | ||
477 | static match | |
478 | match_old_style_init (const char *name) | |
479 | { | |
480 | match m; | |
481 | gfc_symtree *st; | |
ed0e3607 | 482 | gfc_symbol *sym; |
294fbfc8 TS |
483 | gfc_data *newdata; |
484 | ||
485 | /* Set up data structure to hold initializers. */ | |
486 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
487 | sym = st->n.sym; |
488 | ||
294fbfc8 TS |
489 | newdata = gfc_get_data (); |
490 | newdata->var = gfc_get_data_variable (); | |
491 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 492 | newdata->where = gfc_current_locus; |
294fbfc8 | 493 | |
66e4ab31 | 494 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
495 | m = top_val_list (newdata); |
496 | if (m != MATCH_YES) | |
497 | { | |
cede9502 | 498 | free (newdata); |
294fbfc8 TS |
499 | return m; |
500 | } | |
501 | ||
502 | if (gfc_pure (NULL)) | |
503 | { | |
504 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 505 | free (newdata); |
294fbfc8 TS |
506 | return MATCH_ERROR; |
507 | } | |
508 | ||
f1f39033 PT |
509 | if (gfc_implicit_pure (NULL)) |
510 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
511 | ||
ed0e3607 AL |
512 | /* Mark the variable as having appeared in a data statement. */ |
513 | if (gfc_add_data (&sym->attr, sym->name, &sym->declared_at) == FAILURE) | |
514 | { | |
cede9502 | 515 | free (newdata); |
ed0e3607 AL |
516 | return MATCH_ERROR; |
517 | } | |
518 | ||
294fbfc8 TS |
519 | /* Chain in namespace list of DATA initializers. */ |
520 | newdata->next = gfc_current_ns->data; | |
521 | gfc_current_ns->data = newdata; | |
522 | ||
523 | return m; | |
524 | } | |
525 | ||
636dff67 | 526 | |
294fbfc8 | 527 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 528 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 529 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 530 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
531 | |
532 | match | |
533 | gfc_match_data (void) | |
534 | { | |
7b901ac4 | 535 | gfc_data *new_data; |
294fbfc8 TS |
536 | match m; |
537 | ||
ca39e6f2 | 538 | set_in_match_data (true); |
2220652d | 539 | |
294fbfc8 TS |
540 | for (;;) |
541 | { | |
7b901ac4 KG |
542 | new_data = gfc_get_data (); |
543 | new_data->where = gfc_current_locus; | |
294fbfc8 | 544 | |
7b901ac4 | 545 | m = top_var_list (new_data); |
294fbfc8 TS |
546 | if (m != MATCH_YES) |
547 | goto cleanup; | |
548 | ||
7b901ac4 | 549 | m = top_val_list (new_data); |
294fbfc8 TS |
550 | if (m != MATCH_YES) |
551 | goto cleanup; | |
552 | ||
7b901ac4 KG |
553 | new_data->next = gfc_current_ns->data; |
554 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
555 | |
556 | if (gfc_match_eos () == MATCH_YES) | |
557 | break; | |
558 | ||
559 | gfc_match_char (','); /* Optional comma */ | |
560 | } | |
561 | ||
ca39e6f2 | 562 | set_in_match_data (false); |
2220652d | 563 | |
294fbfc8 TS |
564 | if (gfc_pure (NULL)) |
565 | { | |
566 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
567 | return MATCH_ERROR; | |
568 | } | |
569 | ||
f1f39033 PT |
570 | if (gfc_implicit_pure (NULL)) |
571 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
572 | ||
294fbfc8 TS |
573 | return MATCH_YES; |
574 | ||
575 | cleanup: | |
ca39e6f2 | 576 | set_in_match_data (false); |
7b901ac4 | 577 | gfc_free_data (new_data); |
294fbfc8 TS |
578 | return MATCH_ERROR; |
579 | } | |
580 | ||
581 | ||
582 | /************************ Declaration statements *********************/ | |
583 | ||
d3a9eea2 TB |
584 | |
585 | /* Auxilliary function to merge DIMENSION and CODIMENSION array specs. */ | |
586 | ||
587 | static void | |
588 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) | |
589 | { | |
590 | int i; | |
591 | ||
592 | if (to->rank == 0 && from->rank > 0) | |
593 | { | |
594 | to->rank = from->rank; | |
595 | to->type = from->type; | |
596 | to->cray_pointee = from->cray_pointee; | |
597 | to->cp_was_assumed = from->cp_was_assumed; | |
598 | ||
599 | for (i = 0; i < to->corank; i++) | |
600 | { | |
601 | to->lower[from->rank + i] = to->lower[i]; | |
602 | to->upper[from->rank + i] = to->upper[i]; | |
603 | } | |
604 | for (i = 0; i < from->rank; i++) | |
605 | { | |
606 | if (copy) | |
607 | { | |
608 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
609 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
610 | } | |
611 | else | |
612 | { | |
613 | to->lower[i] = from->lower[i]; | |
614 | to->upper[i] = from->upper[i]; | |
615 | } | |
616 | } | |
617 | } | |
618 | else if (to->corank == 0 && from->corank > 0) | |
619 | { | |
620 | to->corank = from->corank; | |
621 | to->cotype = from->cotype; | |
622 | ||
623 | for (i = 0; i < from->corank; i++) | |
624 | { | |
625 | if (copy) | |
626 | { | |
627 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
628 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
629 | } | |
630 | else | |
631 | { | |
632 | to->lower[to->rank + i] = from->lower[i]; | |
633 | to->upper[to->rank + i] = from->upper[i]; | |
634 | } | |
635 | } | |
636 | } | |
637 | } | |
638 | ||
639 | ||
6de9cd9a DN |
640 | /* Match an intent specification. Since this can only happen after an |
641 | INTENT word, a legal intent-spec must follow. */ | |
642 | ||
643 | static sym_intent | |
644 | match_intent_spec (void) | |
645 | { | |
646 | ||
647 | if (gfc_match (" ( in out )") == MATCH_YES) | |
648 | return INTENT_INOUT; | |
649 | if (gfc_match (" ( in )") == MATCH_YES) | |
650 | return INTENT_IN; | |
651 | if (gfc_match (" ( out )") == MATCH_YES) | |
652 | return INTENT_OUT; | |
653 | ||
654 | gfc_error ("Bad INTENT specification at %C"); | |
655 | return INTENT_UNKNOWN; | |
656 | } | |
657 | ||
658 | ||
659 | /* Matches a character length specification, which is either a | |
e69afb29 | 660 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
661 | |
662 | static match | |
e69afb29 | 663 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 664 | { |
cba28dad JD |
665 | match m; |
666 | ||
e69afb29 SK |
667 | *expr = NULL; |
668 | *deferred = false; | |
669 | ||
6de9cd9a | 670 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
671 | return MATCH_YES; |
672 | ||
673 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 674 | { |
e69afb29 SK |
675 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: deferred type " |
676 | "parameter at %C") == FAILURE) | |
677 | return MATCH_ERROR; | |
678 | ||
679 | *deferred = true; | |
680 | ||
6de9cd9a DN |
681 | return MATCH_YES; |
682 | } | |
683 | ||
cba28dad | 684 | m = gfc_match_expr (expr); |
f37e928c DK |
685 | |
686 | if (m == MATCH_YES | |
687 | && gfc_expr_check_typed (*expr, gfc_current_ns, false) == FAILURE) | |
688 | return MATCH_ERROR; | |
689 | ||
cba28dad JD |
690 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
691 | { | |
692 | if ((*expr)->value.function.actual | |
693 | && (*expr)->value.function.actual->expr->symtree) | |
694 | { | |
695 | gfc_expr *e; | |
696 | e = (*expr)->value.function.actual->expr; | |
697 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
698 | && e->expr_type == EXPR_VARIABLE) | |
699 | { | |
700 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
701 | goto syntax; | |
702 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
703 | && e->symtree->n.sym->ts.u.cl |
704 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
cba28dad JD |
705 | goto syntax; |
706 | } | |
707 | } | |
708 | } | |
709 | return m; | |
710 | ||
711 | syntax: | |
712 | gfc_error ("Conflict in attributes of function argument at %C"); | |
713 | return MATCH_ERROR; | |
6de9cd9a DN |
714 | } |
715 | ||
716 | ||
717 | /* A character length is a '*' followed by a literal integer or a | |
718 | char_len_param_value in parenthesis. */ | |
719 | ||
720 | static match | |
e69afb29 | 721 | match_char_length (gfc_expr **expr, bool *deferred) |
6de9cd9a | 722 | { |
5cf54585 | 723 | int length; |
6de9cd9a DN |
724 | match m; |
725 | ||
e69afb29 | 726 | *deferred = false; |
6de9cd9a DN |
727 | m = gfc_match_char ('*'); |
728 | if (m != MATCH_YES) | |
729 | return m; | |
730 | ||
5cf54585 | 731 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
732 | if (m == MATCH_ERROR) |
733 | return m; | |
734 | ||
735 | if (m == MATCH_YES) | |
736 | { | |
e2ab8b09 JW |
737 | if (gfc_notify_std (GFC_STD_F95_OBS, "Obsolescent feature: " |
738 | "Old-style character length at %C") == FAILURE) | |
739 | return MATCH_ERROR; | |
b7e75771 | 740 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
741 | return m; |
742 | } | |
743 | ||
744 | if (gfc_match_char ('(') == MATCH_NO) | |
745 | goto syntax; | |
746 | ||
e69afb29 | 747 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
748 | if (m != MATCH_YES && gfc_matching_function) |
749 | { | |
750 | gfc_undo_symbols (); | |
751 | m = MATCH_YES; | |
752 | } | |
753 | ||
6de9cd9a DN |
754 | if (m == MATCH_ERROR) |
755 | return m; | |
756 | if (m == MATCH_NO) | |
757 | goto syntax; | |
758 | ||
759 | if (gfc_match_char (')') == MATCH_NO) | |
760 | { | |
761 | gfc_free_expr (*expr); | |
762 | *expr = NULL; | |
763 | goto syntax; | |
764 | } | |
765 | ||
766 | return MATCH_YES; | |
767 | ||
768 | syntax: | |
769 | gfc_error ("Syntax error in character length specification at %C"); | |
770 | return MATCH_ERROR; | |
771 | } | |
772 | ||
773 | ||
9e35b386 EE |
774 | /* Special subroutine for finding a symbol. Check if the name is found |
775 | in the current name space. If not, and we're compiling a function or | |
776 | subroutine and the parent compilation unit is an interface, then check | |
777 | to see if the name we've been given is the name of the interface | |
778 | (located in another namespace). */ | |
6de9cd9a DN |
779 | |
780 | static int | |
08a6b8e0 | 781 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
782 | { |
783 | gfc_state_data *s; | |
08a6b8e0 | 784 | gfc_symtree *st; |
9e35b386 | 785 | int i; |
6de9cd9a | 786 | |
08a6b8e0 | 787 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 788 | if (i == 0) |
08a6b8e0 TB |
789 | { |
790 | *result = st ? st->n.sym : NULL; | |
791 | goto end; | |
792 | } | |
d51347f9 | 793 | |
6de9cd9a DN |
794 | if (gfc_current_state () != COMP_SUBROUTINE |
795 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 796 | goto end; |
6de9cd9a DN |
797 | |
798 | s = gfc_state_stack->previous; | |
799 | if (s == NULL) | |
9e35b386 | 800 | goto end; |
6de9cd9a DN |
801 | |
802 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 803 | goto end; |
6de9cd9a | 804 | if (s->sym == NULL) |
66e4ab31 | 805 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
806 | |
807 | if (strcmp (name, s->sym->name) == 0) | |
808 | { | |
809 | *result = s->sym; | |
810 | return 0; | |
811 | } | |
812 | ||
9e35b386 EE |
813 | end: |
814 | return i; | |
6de9cd9a DN |
815 | } |
816 | ||
817 | ||
818 | /* Special subroutine for getting a symbol node associated with a | |
819 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
820 | symbol is created in the parent using with symtree node in the | |
821 | child unit pointing to the symbol. If the current namespace has no | |
822 | parent, then the symbol is just created in the current unit. */ | |
823 | ||
824 | static int | |
636dff67 | 825 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
826 | { |
827 | gfc_symtree *st; | |
828 | gfc_symbol *sym; | |
a7ca4d8d | 829 | int rc = 0; |
6de9cd9a | 830 | |
1a492601 PT |
831 | /* Module functions have to be left in their own namespace because |
832 | they have potentially (almost certainly!) already been referenced. | |
833 | In this sense, they are rather like external functions. This is | |
834 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
835 | space is set to point to the master function, so that the fake | |
836 | result mechanism can work. */ | |
837 | if (module_fcn_entry) | |
6c12686b PT |
838 | { |
839 | /* Present if entry is declared to be a module procedure. */ | |
840 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 841 | |
6c12686b PT |
842 | if (*result == NULL) |
843 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 844 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
845 | && (*result)->ts.type == BT_UNKNOWN |
846 | && sym->attr.flavor == FL_UNKNOWN) | |
847 | /* Pick up the typespec for the entry, if declared in the function | |
848 | body. Note that this symbol is FL_UNKNOWN because it will | |
849 | only have appeared in a type declaration. The local symtree | |
850 | is set to point to the module symbol and a unique symtree | |
851 | to the local version. This latter ensures a correct clearing | |
852 | of the symbols. */ | |
2e32a71e PT |
853 | { |
854 | /* If the ENTRY proceeds its specification, we need to ensure | |
855 | that this does not raise a "has no IMPLICIT type" error. */ | |
856 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 857 | sym->attr.untyped = 1; |
2e32a71e | 858 | |
0e5a218b | 859 | (*result)->ts = sym->ts; |
2e32a71e PT |
860 | |
861 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 862 | the ENTRY precede its specification, the specification |
2e32a71e PT |
863 | can be applied. */ |
864 | (*result)->ns = gfc_current_ns; | |
865 | ||
866 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
867 | st->n.sym = *result; | |
868 | st = gfc_get_unique_symtree (gfc_current_ns); | |
869 | st->n.sym = sym; | |
870 | } | |
6c12686b | 871 | } |
68ea355b PT |
872 | else |
873 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 874 | |
a7ca4d8d PT |
875 | if (rc) |
876 | return rc; | |
877 | ||
68ea355b | 878 | sym = *result; |
2c693a24 | 879 | gfc_current_ns->refs++; |
6de9cd9a | 880 | |
7b901ac4 | 881 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
68ea355b | 882 | { |
cda7004b PT |
883 | /* Trap another encompassed procedure with the same name. All |
884 | these conditions are necessary to avoid picking up an entry | |
885 | whose name clashes with that of the encompassing procedure; | |
886 | this is handled using gsymbols to register unique,globally | |
887 | accessible names. */ | |
68ea355b | 888 | if (sym->attr.flavor != 0 |
636dff67 SK |
889 | && sym->attr.proc != 0 |
890 | && (sym->attr.subroutine || sym->attr.function) | |
891 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
68ea355b PT |
892 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
893 | name, &sym->declared_at); | |
894 | ||
fd3e70af JD |
895 | /* Trap a procedure with a name the same as interface in the |
896 | encompassing scope. */ | |
897 | if (sym->attr.generic != 0 | |
2305fa31 JD |
898 | && (sym->attr.subroutine || sym->attr.function) |
899 | && !sym->attr.mod_proc) | |
fd3e70af JD |
900 | gfc_error_now ("Name '%s' at %C is already defined" |
901 | " as a generic interface at %L", | |
902 | name, &sym->declared_at); | |
903 | ||
68ea355b PT |
904 | /* Trap declarations of attributes in encompassing scope. The |
905 | signature for this is that ts.kind is set. Legitimate | |
906 | references only set ts.type. */ | |
907 | if (sym->ts.kind != 0 | |
636dff67 SK |
908 | && !sym->attr.implicit_type |
909 | && sym->attr.proc == 0 | |
910 | && gfc_current_ns->parent != NULL | |
911 | && sym->attr.access == 0 | |
912 | && !module_fcn_entry) | |
913 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
914 | "and must not have attributes declared at %L", | |
68ea355b PT |
915 | name, &sym->declared_at); |
916 | } | |
917 | ||
918 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
919 | return rc; | |
6de9cd9a | 920 | |
1a492601 PT |
921 | /* Module function entries will already have a symtree in |
922 | the current namespace but will need one at module level. */ | |
923 | if (module_fcn_entry) | |
6c12686b PT |
924 | { |
925 | /* Present if entry is declared to be a module procedure. */ | |
926 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
927 | if (st == NULL) | |
928 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
929 | } | |
1a492601 PT |
930 | else |
931 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 932 | |
6de9cd9a DN |
933 | st->n.sym = sym; |
934 | sym->refs++; | |
935 | ||
66e4ab31 | 936 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 937 | |
1a492601 | 938 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
939 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
940 | && sym->attr.proc != PROC_MODULE) | |
941 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
942 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
943 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
944 | rc = 2; |
945 | ||
946 | return rc; | |
947 | } | |
948 | ||
949 | ||
a8b3b0b6 CR |
950 | /* Verify that the given symbol representing a parameter is C |
951 | interoperable, by checking to see if it was marked as such after | |
952 | its declaration. If the given symbol is not interoperable, a | |
953 | warning is reported, thus removing the need to return the status to | |
954 | the calling function. The standard does not require the user use | |
955 | one of the iso_c_binding named constants to declare an | |
956 | interoperable parameter, but we can't be sure if the param is C | |
957 | interop or not if the user doesn't. For example, integer(4) may be | |
958 | legal Fortran, but doesn't have meaning in C. It may interop with | |
959 | a number of the C types, which causes a problem because the | |
960 | compiler can't know which one. This code is almost certainly not | |
961 | portable, and the user will get what they deserve if the C type | |
962 | across platforms isn't always interoperable with integer(4). If | |
963 | the user had used something like integer(c_int) or integer(c_long), | |
964 | the compiler could have automatically handled the varying sizes | |
965 | across platforms. */ | |
966 | ||
17b1d2a0 | 967 | gfc_try |
00820a2a | 968 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
969 | { |
970 | int is_c_interop = 0; | |
17b1d2a0 | 971 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
972 | |
973 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
974 | Don't repeat the checks here. */ | |
975 | if (sym->attr.implicit_type) | |
976 | return SUCCESS; | |
977 | ||
978 | /* For subroutines or functions that are passed to a BIND(C) procedure, | |
979 | they're interoperable if they're BIND(C) and their params are all | |
980 | interoperable. */ | |
981 | if (sym->attr.flavor == FL_PROCEDURE) | |
982 | { | |
983 | if (sym->attr.is_bind_c == 0) | |
984 | { | |
985 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
986 | "attribute to be C interoperable", sym->name, | |
987 | &(sym->declared_at)); | |
988 | ||
989 | return FAILURE; | |
990 | } | |
991 | else | |
992 | { | |
993 | if (sym->attr.is_c_interop == 1) | |
994 | /* We've already checked this procedure; don't check it again. */ | |
995 | return SUCCESS; | |
996 | else | |
997 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
998 | sym->common_block); | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* See if we've stored a reference to a procedure that owns sym. */ | |
1003 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1004 | { | |
1005 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1006 | { | |
00820a2a | 1007 | is_c_interop = (gfc_verify_c_interop (&(sym->ts)) == SUCCESS ? 1 : 0); |
a8b3b0b6 CR |
1008 | |
1009 | if (is_c_interop != 1) | |
1010 | { | |
1011 | /* Make personalized messages to give better feedback. */ | |
1012 | if (sym->ts.type == BT_DERIVED) | |
00820a2a JW |
1013 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1014 | "BIND(C) procedure '%s' but is not C interoperable " | |
a8b3b0b6 CR |
1015 | "because derived type '%s' is not C interoperable", |
1016 | sym->name, &(sym->declared_at), | |
1017 | sym->ns->proc_name->name, | |
bc21d315 | 1018 | sym->ts.u.derived->name); |
00820a2a JW |
1019 | else if (sym->ts.type == BT_CLASS) |
1020 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1021 | "BIND(C) procedure '%s' but is not C interoperable " | |
1022 | "because it is polymorphic", | |
1023 | sym->name, &(sym->declared_at), | |
1024 | sym->ns->proc_name->name); | |
a8b3b0b6 CR |
1025 | else |
1026 | gfc_warning ("Variable '%s' at %L is a parameter to the " | |
1027 | "BIND(C) procedure '%s' but may not be C " | |
1028 | "interoperable", | |
1029 | sym->name, &(sym->declared_at), | |
1030 | sym->ns->proc_name->name); | |
1031 | } | |
aa5e22f0 CR |
1032 | |
1033 | /* Character strings are only C interoperable if they have a | |
1034 | length of 1. */ | |
1035 | if (sym->ts.type == BT_CHARACTER) | |
1036 | { | |
bc21d315 | 1037 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1038 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1039 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1040 | { | |
1041 | gfc_error ("Character argument '%s' at %L " | |
1042 | "must be length 1 because " | |
1043 | "procedure '%s' is BIND(C)", | |
1044 | sym->name, &sym->declared_at, | |
1045 | sym->ns->proc_name->name); | |
1046 | retval = FAILURE; | |
1047 | } | |
1048 | } | |
1049 | ||
a8b3b0b6 CR |
1050 | /* We have to make sure that any param to a bind(c) routine does |
1051 | not have the allocatable, pointer, or optional attributes, | |
1052 | according to J3/04-007, section 5.1. */ | |
1053 | if (sym->attr.allocatable == 1) | |
1054 | { | |
1055 | gfc_error ("Variable '%s' at %L cannot have the " | |
1056 | "ALLOCATABLE attribute because procedure '%s'" | |
1057 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1058 | sym->ns->proc_name->name); | |
1059 | retval = FAILURE; | |
1060 | } | |
1061 | ||
1062 | if (sym->attr.pointer == 1) | |
1063 | { | |
1064 | gfc_error ("Variable '%s' at %L cannot have the " | |
1065 | "POINTER attribute because procedure '%s'" | |
1066 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1067 | sym->ns->proc_name->name); | |
1068 | retval = FAILURE; | |
1069 | } | |
1070 | ||
2e8d9212 | 1071 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1072 | { |
2e8d9212 TB |
1073 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1074 | "and the VALUE attribute because procedure '%s' " | |
1075 | "is BIND(C)", sym->name, &(sym->declared_at), | |
a8b3b0b6 CR |
1076 | sym->ns->proc_name->name); |
1077 | retval = FAILURE; | |
1078 | } | |
2e8d9212 | 1079 | else if (sym->attr.optional == 1 |
4650947d | 1080 | && gfc_notify_std (GFC_STD_F2008_TS, "TS29113: Variable '%s' " |
2e8d9212 TB |
1081 | "at %L with OPTIONAL attribute in " |
1082 | "procedure '%s' which is BIND(C)", | |
1083 | sym->name, &(sym->declared_at), | |
1084 | sym->ns->proc_name->name) | |
1085 | == FAILURE) | |
1086 | retval = FAILURE; | |
a8b3b0b6 CR |
1087 | |
1088 | /* Make sure that if it has the dimension attribute, that it is | |
1089 | either assumed size or explicit shape. */ | |
1090 | if (sym->as != NULL) | |
1091 | { | |
1092 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
1093 | { | |
1094 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
1095 | "argument to the procedure '%s' at %L because " | |
1096 | "the procedure is BIND(C)", sym->name, | |
1097 | &(sym->declared_at), sym->ns->proc_name->name, | |
1098 | &(sym->ns->proc_name->declared_at)); | |
1099 | retval = FAILURE; | |
1100 | } | |
1101 | ||
1102 | if (sym->as->type == AS_DEFERRED) | |
1103 | { | |
1104 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
1105 | "argument to the procedure '%s' at %L because " | |
1106 | "the procedure is BIND(C)", sym->name, | |
1107 | &(sym->declared_at), sym->ns->proc_name->name, | |
1108 | &(sym->ns->proc_name->declared_at)); | |
1109 | retval = FAILURE; | |
1110 | } | |
1111 | } | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | return retval; | |
1116 | } | |
1117 | ||
1118 | ||
cf2b3c22 | 1119 | |
a8b3b0b6 | 1120 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1121 | |
17b1d2a0 | 1122 | static gfc_try |
e69afb29 | 1123 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1124 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1125 | { |
1126 | symbol_attribute attr; | |
1127 | gfc_symbol *sym; | |
1128 | ||
9e35b386 | 1129 | if (gfc_get_symbol (name, NULL, &sym)) |
6de9cd9a DN |
1130 | return FAILURE; |
1131 | ||
66e4ab31 | 1132 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1133 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1134 | && (sym->attr.implicit_type == 0 |
1135 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
6de9cd9a DN |
1136 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
1137 | return FAILURE; | |
1138 | ||
1139 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1140 | { |
1141 | sym->ts.u.cl = cl; | |
1142 | sym->ts.deferred = cl_deferred; | |
1143 | } | |
6de9cd9a DN |
1144 | |
1145 | /* Add dimension attribute if present. */ | |
1146 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
1147 | return FAILURE; | |
1148 | *as = NULL; | |
1149 | ||
1150 | /* Add attribute to symbol. The copy is so that we can reset the | |
1151 | dimension attribute. */ | |
1152 | attr = current_attr; | |
1153 | attr.dimension = 0; | |
be59db2d | 1154 | attr.codimension = 0; |
6de9cd9a DN |
1155 | |
1156 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
1157 | return FAILURE; | |
1158 | ||
a8b3b0b6 CR |
1159 | /* Finish any work that may need to be done for the binding label, |
1160 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1161 | is made, and before the symbol name (for data decls), so the | |
1162 | current_ts is holding the binding label, or nothing if the | |
1163 | name= attr wasn't given. Therefore, test here if we're dealing | |
1164 | with a bind(c) and make sure the binding label is set correctly. */ | |
1165 | if (sym->attr.is_bind_c == 1) | |
1166 | { | |
1167 | if (sym->binding_label[0] == '\0') | |
1168 | { | |
ad4a2f64 TB |
1169 | /* Set the binding label and verify that if a NAME= was specified |
1170 | then only one identifier was in the entity-decl-list. */ | |
1171 | if (set_binding_label (sym->binding_label, sym->name, | |
1172 | num_idents_on_line) == FAILURE) | |
a8b3b0b6 CR |
1173 | return FAILURE; |
1174 | } | |
1175 | } | |
1176 | ||
1177 | /* See if we know we're in a common block, and if it's a bind(c) | |
1178 | common then we need to make sure we're an interoperable type. */ | |
1179 | if (sym->attr.in_common == 1) | |
1180 | { | |
1181 | /* Test the common block object. */ | |
1182 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1183 | && sym->ts.is_c_interop != 1) | |
1184 | { | |
1185 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1186 | "must be declared with a C interoperable " | |
1187 | "kind since common block '%s' is BIND(C)", | |
1188 | sym->name, sym->common_block->name, | |
1189 | sym->common_block->name); | |
1190 | gfc_clear_error (); | |
1191 | } | |
1192 | } | |
1193 | ||
9a3db5a3 PT |
1194 | sym->attr.implied_index = 0; |
1195 | ||
528622fd | 1196 | if (sym->ts.type == BT_CLASS) |
96d9b22c | 1197 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
cf2b3c22 | 1198 | |
6de9cd9a DN |
1199 | return SUCCESS; |
1200 | } | |
1201 | ||
636dff67 | 1202 | |
df7cc9b5 | 1203 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1204 | truncated. If we're inside an array constructor without a typespec, we |
1205 | additionally check that all elements have the same length; check_len -1 | |
1206 | means no checking. */ | |
df7cc9b5 FW |
1207 | |
1208 | void | |
d2848082 | 1209 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1210 | { |
00660189 | 1211 | gfc_char_t *s; |
df7cc9b5 FW |
1212 | int slen; |
1213 | ||
1214 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1215 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1216 | |
1217 | slen = expr->value.character.length; | |
1218 | if (len != slen) | |
1219 | { | |
00660189 FXC |
1220 | s = gfc_get_wide_string (len + 1); |
1221 | memcpy (s, expr->value.character.string, | |
1222 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1223 | if (len > slen) |
00660189 | 1224 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d PT |
1225 | |
1226 | if (gfc_option.warn_character_truncation && slen > len) | |
1227 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1228 | "(%d/%d)", &expr->where, slen, len); | |
1229 | ||
1230 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1231 | initializers. */ | |
d2848082 DK |
1232 | if (check_len != -1 && slen != check_len |
1233 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1234 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1235 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1236 | &expr->where, slen, check_len); |
2220652d | 1237 | |
150675a8 | 1238 | s[len] = '\0'; |
cede9502 | 1239 | free (expr->value.character.string); |
df7cc9b5 FW |
1240 | expr->value.character.string = s; |
1241 | expr->value.character.length = len; | |
1242 | } | |
1243 | } | |
6de9cd9a | 1244 | |
25d8f0a2 | 1245 | |
d51347f9 | 1246 | /* Function to create and update the enumerator history |
25d8f0a2 | 1247 | using the information passed as arguments. |
d51347f9 TB |
1248 | Pointer "max_enum" is also updated, to point to |
1249 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1250 | |
1251 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1252 | INIT points to its enumerator value. */ |
25d8f0a2 | 1253 | |
d51347f9 | 1254 | static void |
636dff67 | 1255 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1256 | { |
1257 | enumerator_history *new_enum_history; | |
1258 | gcc_assert (sym != NULL && init != NULL); | |
1259 | ||
ece3f663 | 1260 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1261 | |
1262 | new_enum_history->sym = sym; | |
1263 | new_enum_history->initializer = init; | |
1264 | new_enum_history->next = NULL; | |
1265 | ||
1266 | if (enum_history == NULL) | |
1267 | { | |
1268 | enum_history = new_enum_history; | |
1269 | max_enum = enum_history; | |
1270 | } | |
1271 | else | |
1272 | { | |
1273 | new_enum_history->next = enum_history; | |
1274 | enum_history = new_enum_history; | |
1275 | ||
d51347f9 | 1276 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1277 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1278 | max_enum = new_enum_history; |
25d8f0a2 TS |
1279 | } |
1280 | } | |
1281 | ||
1282 | ||
d51347f9 | 1283 | /* Function to free enum kind history. */ |
25d8f0a2 | 1284 | |
d51347f9 | 1285 | void |
636dff67 | 1286 | gfc_free_enum_history (void) |
25d8f0a2 | 1287 | { |
d51347f9 TB |
1288 | enumerator_history *current = enum_history; |
1289 | enumerator_history *next; | |
25d8f0a2 TS |
1290 | |
1291 | while (current != NULL) | |
1292 | { | |
1293 | next = current->next; | |
cede9502 | 1294 | free (current); |
25d8f0a2 TS |
1295 | current = next; |
1296 | } | |
1297 | max_enum = NULL; | |
1298 | enum_history = NULL; | |
1299 | } | |
1300 | ||
1301 | ||
6de9cd9a DN |
1302 | /* Function called by variable_decl() that adds an initialization |
1303 | expression to a symbol. */ | |
1304 | ||
17b1d2a0 | 1305 | static gfc_try |
66e4ab31 | 1306 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1307 | { |
1308 | symbol_attribute attr; | |
1309 | gfc_symbol *sym; | |
1310 | gfc_expr *init; | |
1311 | ||
1312 | init = *initp; | |
08a6b8e0 | 1313 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
1314 | return FAILURE; |
1315 | ||
1316 | attr = sym->attr; | |
1317 | ||
1318 | /* If this symbol is confirming an implicit parameter type, | |
1319 | then an initialization expression is not allowed. */ | |
1320 | if (attr.flavor == FL_PARAMETER | |
1321 | && sym->value != NULL | |
1322 | && *initp != NULL) | |
1323 | { | |
1324 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1325 | sym->name); | |
1326 | return FAILURE; | |
1327 | } | |
1328 | ||
1329 | if (init == NULL) | |
1330 | { | |
1331 | /* An initializer is required for PARAMETER declarations. */ | |
1332 | if (attr.flavor == FL_PARAMETER) | |
1333 | { | |
1334 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1335 | return FAILURE; | |
1336 | } | |
1337 | } | |
1338 | else | |
1339 | { | |
1340 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1341 | initializer. */ |
6de9cd9a DN |
1342 | if (sym->attr.data) |
1343 | { | |
636dff67 SK |
1344 | gfc_error ("Variable '%s' at %C with an initializer already " |
1345 | "appears in a DATA statement", sym->name); | |
6de9cd9a DN |
1346 | return FAILURE; |
1347 | } | |
1348 | ||
75d17889 | 1349 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1350 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1351 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1352 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
80f95228 | 1353 | && !sym->attr.proc_pointer |
6de9cd9a DN |
1354 | && gfc_check_assign_symbol (sym, init) == FAILURE) |
1355 | return FAILURE; | |
1356 | ||
bc21d315 | 1357 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1358 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1359 | { |
1360 | /* Update symbol character length according initializer. */ | |
51b128a0 PT |
1361 | if (gfc_check_assign_symbol (sym, init) == FAILURE) |
1362 | return FAILURE; | |
1363 | ||
bc21d315 | 1364 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1365 | { |
a99288e5 | 1366 | int clen; |
66e4ab31 SK |
1367 | /* If there are multiple CHARACTER variables declared on the |
1368 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1369 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1370 | |
a99288e5 PT |
1371 | if (sym->attr.flavor == FL_PARAMETER) |
1372 | { | |
1373 | if (init->expr_type == EXPR_CONSTANT) | |
1374 | { | |
1375 | clen = init->value.character.length; | |
b7e75771 JD |
1376 | sym->ts.u.cl->length |
1377 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1378 | NULL, clen); | |
a99288e5 PT |
1379 | } |
1380 | else if (init->expr_type == EXPR_ARRAY) | |
1381 | { | |
b7e75771 JD |
1382 | gfc_constructor *c; |
1383 | c = gfc_constructor_first (init->value.constructor); | |
1384 | clen = c->expr->value.character.length; | |
1385 | sym->ts.u.cl->length | |
1386 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1387 | NULL, clen); | |
a99288e5 | 1388 | } |
bc21d315 JW |
1389 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1390 | sym->ts.u.cl->length = | |
1391 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1392 | } |
df7cc9b5 FW |
1393 | } |
1394 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1395 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1396 | { |
bc21d315 | 1397 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
df7cc9b5 FW |
1398 | |
1399 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1400 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1401 | else if (init->expr_type == EXPR_ARRAY) |
1402 | { | |
b7e75771 JD |
1403 | gfc_constructor *c; |
1404 | ||
dcdc7b6c PT |
1405 | /* Build a new charlen to prevent simplification from |
1406 | deleting the length before it is resolved. */ | |
b76e28c6 | 1407 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1408 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1409 | |
b7e75771 JD |
1410 | for (c = gfc_constructor_first (init->value.constructor); |
1411 | c; c = gfc_constructor_next (c)) | |
1412 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1413 | } |
1414 | } | |
1415 | } | |
1416 | ||
f5ca06e6 DK |
1417 | /* If sym is implied-shape, set its upper bounds from init. */ |
1418 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1419 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1420 | { | |
1421 | int dim; | |
1422 | ||
1423 | if (init->rank == 0) | |
1424 | { | |
1425 | gfc_error ("Can't initialize implied-shape array at %L" | |
1426 | " with scalar", &sym->declared_at); | |
1427 | return FAILURE; | |
1428 | } | |
1429 | gcc_assert (sym->as->rank == init->rank); | |
1430 | ||
1431 | /* Shape should be present, we get an initialization expression. */ | |
1432 | gcc_assert (init->shape); | |
1433 | ||
1434 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1435 | { | |
1436 | int k; | |
1437 | gfc_expr* lower; | |
1438 | gfc_expr* e; | |
1439 | ||
1440 | lower = sym->as->lower[dim]; | |
1441 | if (lower->expr_type != EXPR_CONSTANT) | |
1442 | { | |
1443 | gfc_error ("Non-constant lower bound in implied-shape" | |
1444 | " declaration at %L", &lower->where); | |
1445 | return FAILURE; | |
1446 | } | |
1447 | ||
1448 | /* All dimensions must be without upper bound. */ | |
1449 | gcc_assert (!sym->as->upper[dim]); | |
1450 | ||
1451 | k = lower->ts.kind; | |
1452 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1453 | mpz_add (e->value.integer, | |
1454 | lower->value.integer, init->shape[dim]); | |
1455 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1456 | sym->as->upper[dim] = e; | |
1457 | } | |
1458 | ||
1459 | sym->as->type = AS_EXPLICIT; | |
1460 | } | |
1461 | ||
a8b3b0b6 CR |
1462 | /* Need to check if the expression we initialized this |
1463 | to was one of the iso_c_binding named constants. If so, | |
1464 | and we're a parameter (constant), let it be iso_c. | |
1465 | For example: | |
1466 | integer(c_int), parameter :: my_int = c_int | |
1467 | integer(my_int) :: my_int_2 | |
1468 | If we mark my_int as iso_c (since we can see it's value | |
1469 | is equal to one of the named constants), then my_int_2 | |
1470 | will be considered C interoperable. */ | |
1471 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1472 | { | |
1473 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1474 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1475 | /* attr bits needed for module files. */ | |
1476 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1477 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1478 | if (init->ts.is_iso_c) | |
1479 | sym->ts.f90_type = init->ts.f90_type; | |
1480 | } | |
b7e75771 | 1481 | |
6de9cd9a DN |
1482 | /* Add initializer. Make sure we keep the ranks sane. */ |
1483 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1484 | { |
1485 | mpz_t size; | |
1486 | gfc_expr *array; | |
a9b43781 PT |
1487 | int n; |
1488 | if (sym->attr.flavor == FL_PARAMETER | |
1489 | && init->expr_type == EXPR_CONSTANT | |
1490 | && spec_size (sym->as, &size) == SUCCESS | |
1491 | && mpz_cmp_si (size, 0) > 0) | |
1492 | { | |
b7e75771 JD |
1493 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1494 | &init->where); | |
a9b43781 | 1495 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1496 | gfc_constructor_append_expr (&array->value.constructor, |
1497 | n == 0 | |
1498 | ? init | |
1499 | : gfc_copy_expr (init), | |
1500 | &init->where); | |
1501 | ||
a9b43781 PT |
1502 | array->shape = gfc_get_shape (sym->as->rank); |
1503 | for (n = 0; n < sym->as->rank; n++) | |
1504 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1505 | ||
1506 | init = array; | |
1507 | mpz_clear (size); | |
1508 | } | |
1509 | init->rank = sym->as->rank; | |
1510 | } | |
6de9cd9a DN |
1511 | |
1512 | sym->value = init; | |
ef7236d2 DF |
1513 | if (sym->attr.save == SAVE_NONE) |
1514 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1515 | *initp = NULL; |
1516 | } | |
1517 | ||
1518 | return SUCCESS; | |
1519 | } | |
1520 | ||
1521 | ||
1522 | /* Function called by variable_decl() that adds a name to a structure | |
1523 | being built. */ | |
1524 | ||
17b1d2a0 | 1525 | static gfc_try |
636dff67 SK |
1526 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1527 | gfc_array_spec **as) | |
6de9cd9a DN |
1528 | { |
1529 | gfc_component *c; | |
2e23972e | 1530 | gfc_try t = SUCCESS; |
6de9cd9a | 1531 | |
619dd721 | 1532 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1533 | constructing, it must have the pointer attribute. */ |
619dd721 | 1534 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1535 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1536 | && current_attr.pointer == 0) |
1537 | { | |
1538 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1539 | return FAILURE; | |
1540 | } | |
1541 | ||
636dff67 | 1542 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1543 | { |
1544 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1545 | { | |
1546 | gfc_error ("Array component of structure at %C must have explicit " | |
1547 | "or deferred shape"); | |
1548 | return FAILURE; | |
1549 | } | |
1550 | } | |
1551 | ||
1552 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1553 | return FAILURE; | |
1554 | ||
1555 | c->ts = current_ts; | |
bc21d315 JW |
1556 | if (c->ts.type == BT_CHARACTER) |
1557 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1558 | c->attr = current_attr; |
6de9cd9a DN |
1559 | |
1560 | c->initializer = *init; | |
1561 | *init = NULL; | |
1562 | ||
1563 | c->as = *as; | |
1564 | if (c->as != NULL) | |
be59db2d TB |
1565 | { |
1566 | if (c->as->corank) | |
1567 | c->attr.codimension = 1; | |
1568 | if (c->as->rank) | |
1569 | c->attr.dimension = 1; | |
1570 | } | |
6de9cd9a DN |
1571 | *as = NULL; |
1572 | ||
28d08315 PT |
1573 | /* Should this ever get more complicated, combine with similar section |
1574 | in add_init_expr_to_sym into a separate function. */ | |
bc21d315 JW |
1575 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer && c->ts.u.cl |
1576 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) | |
28d08315 | 1577 | { |
d2848082 DK |
1578 | int len; |
1579 | ||
bc21d315 JW |
1580 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1581 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1582 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1583 | |
bc21d315 | 1584 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1585 | |
1586 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1587 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1588 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1589 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1590 | { |
b7e75771 JD |
1591 | gfc_constructor *ctor; |
1592 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1593 | |
2f4d1994 | 1594 | if (ctor) |
d2848082 | 1595 | { |
2f4d1994 | 1596 | int first_len; |
b7e75771 JD |
1597 | bool has_ts = (c->initializer->ts.u.cl |
1598 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1599 | |
1600 | /* Remember the length of the first element for checking | |
1601 | that all elements *in the constructor* have the same | |
1602 | length. This need not be the length of the LHS! */ | |
1603 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1604 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1605 | first_len = ctor->expr->value.character.length; | |
1606 | ||
b7e75771 JD |
1607 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1608 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1609 | { |
b7e75771 JD |
1610 | gfc_set_constant_character_len (len, ctor->expr, |
1611 | has_ts ? -1 : first_len); | |
1612 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1613 | } |
d2848082 | 1614 | } |
28d08315 PT |
1615 | } |
1616 | } | |
1617 | ||
6de9cd9a | 1618 | /* Check array components. */ |
d4b7d0f0 | 1619 | if (!c->attr.dimension) |
2e23972e | 1620 | goto scalar; |
6de9cd9a | 1621 | |
d4b7d0f0 | 1622 | if (c->attr.pointer) |
6de9cd9a DN |
1623 | { |
1624 | if (c->as->type != AS_DEFERRED) | |
1625 | { | |
5046aff5 PT |
1626 | gfc_error ("Pointer array component of structure at %C must have a " |
1627 | "deferred shape"); | |
2e23972e | 1628 | t = FAILURE; |
5046aff5 PT |
1629 | } |
1630 | } | |
d4b7d0f0 | 1631 | else if (c->attr.allocatable) |
5046aff5 PT |
1632 | { |
1633 | if (c->as->type != AS_DEFERRED) | |
1634 | { | |
1635 | gfc_error ("Allocatable component of structure at %C must have a " | |
1636 | "deferred shape"); | |
2e23972e | 1637 | t = FAILURE; |
6de9cd9a DN |
1638 | } |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | if (c->as->type != AS_EXPLICIT) | |
1643 | { | |
636dff67 SK |
1644 | gfc_error ("Array component of structure at %C must have an " |
1645 | "explicit shape"); | |
2e23972e | 1646 | t = FAILURE; |
6de9cd9a DN |
1647 | } |
1648 | } | |
1649 | ||
2e23972e JW |
1650 | scalar: |
1651 | if (c->ts.type == BT_CLASS) | |
17643884 JW |
1652 | { |
1653 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1654 | || (!c->ts.u.derived->components | |
1655 | && !c->ts.u.derived->attr.zero_comp); | |
96d9b22c | 1656 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
17643884 JW |
1657 | } |
1658 | ||
2e23972e | 1659 | return t; |
6de9cd9a DN |
1660 | } |
1661 | ||
1662 | ||
1663 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1664 | ||
1665 | match | |
636dff67 | 1666 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1667 | { |
1668 | gfc_symbol *sym; | |
6de9cd9a DN |
1669 | match m; |
1670 | ||
1671 | m = gfc_match (" null ( )"); | |
1672 | if (m != MATCH_YES) | |
1673 | return m; | |
1674 | ||
1675 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1676 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1677 | { | |
1678 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1679 | return MATCH_ERROR; | |
1680 | } | |
1681 | ||
1682 | gfc_intrinsic_symbol (sym); | |
1683 | ||
1684 | if (sym->attr.proc != PROC_INTRINSIC | |
231b2fcc TS |
1685 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1686 | sym->name, NULL) == FAILURE | |
1687 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
6de9cd9a DN |
1688 | return MATCH_ERROR; |
1689 | ||
b7e75771 | 1690 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a DN |
1691 | |
1692 | return MATCH_YES; | |
1693 | } | |
1694 | ||
1695 | ||
80f95228 JW |
1696 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1697 | ||
1698 | static match | |
1699 | match_pointer_init (gfc_expr **init, int procptr) | |
1700 | { | |
1701 | match m; | |
1702 | ||
1703 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1704 | { | |
1705 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1706 | "a PURE procedure"); | |
1707 | return MATCH_ERROR; | |
1708 | } | |
1709 | ||
1710 | /* Match NULL() initilization. */ | |
1711 | m = gfc_match_null (init); | |
1712 | if (m != MATCH_NO) | |
1713 | return m; | |
1714 | ||
1715 | /* Match non-NULL initialization. */ | |
837c4b78 | 1716 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1717 | gfc_matching_procptr_assignment = procptr; |
1718 | m = gfc_match_rvalue (init); | |
837c4b78 | 1719 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1720 | gfc_matching_procptr_assignment = 0; |
1721 | if (m == MATCH_ERROR) | |
1722 | return MATCH_ERROR; | |
1723 | else if (m == MATCH_NO) | |
1724 | { | |
1725 | gfc_error ("Error in pointer initialization at %C"); | |
1726 | return MATCH_ERROR; | |
1727 | } | |
1728 | ||
1729 | if (!procptr) | |
1730 | gfc_resolve_expr (*init); | |
1731 | ||
1732 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: non-NULL pointer " | |
1733 | "initialization at %C") == FAILURE) | |
1734 | return MATCH_ERROR; | |
1735 | ||
1736 | return MATCH_YES; | |
1737 | } | |
1738 | ||
1739 | ||
bb9de0c4 JW |
1740 | static gfc_try |
1741 | check_function_name (char *name) | |
1742 | { | |
1743 | /* In functions that have a RESULT variable defined, the function name always | |
1744 | refers to function calls. Therefore, the name is not allowed to appear in | |
1745 | specification statements. When checking this, be careful about | |
1746 | 'hidden' procedure pointer results ('ppr@'). */ | |
1747 | ||
1748 | if (gfc_current_state () == COMP_FUNCTION) | |
1749 | { | |
1750 | gfc_symbol *block = gfc_current_block (); | |
1751 | if (block && block->result && block->result != block | |
1752 | && strcmp (block->result->name, "ppr@") != 0 | |
1753 | && strcmp (block->name, name) == 0) | |
1754 | { | |
1755 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1756 | return FAILURE; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | return SUCCESS; | |
1761 | } | |
1762 | ||
1763 | ||
6de9cd9a DN |
1764 | /* Match a variable name with an optional initializer. When this |
1765 | subroutine is called, a variable is expected to be parsed next. | |
1766 | Depending on what is happening at the moment, updates either the | |
1767 | symbol table or the current interface. */ | |
1768 | ||
1769 | static match | |
949d5b72 | 1770 | variable_decl (int elem) |
6de9cd9a DN |
1771 | { |
1772 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1773 | gfc_expr *initializer, *char_len; | |
1774 | gfc_array_spec *as; | |
83d890b9 | 1775 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1776 | gfc_charlen *cl; |
e69afb29 | 1777 | bool cl_deferred; |
6de9cd9a DN |
1778 | locus var_locus; |
1779 | match m; | |
17b1d2a0 | 1780 | gfc_try t; |
83d890b9 | 1781 | gfc_symbol *sym; |
6de9cd9a DN |
1782 | |
1783 | initializer = NULL; | |
1784 | as = NULL; | |
83d890b9 | 1785 | cp_as = NULL; |
6de9cd9a DN |
1786 | |
1787 | /* When we get here, we've just matched a list of attributes and | |
1788 | maybe a type and a double colon. The next thing we expect to see | |
1789 | is the name of the symbol. */ | |
1790 | m = gfc_match_name (name); | |
1791 | if (m != MATCH_YES) | |
1792 | goto cleanup; | |
1793 | ||
63645982 | 1794 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1795 | |
1796 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1797 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1798 | if (m == MATCH_ERROR) |
6de9cd9a | 1799 | goto cleanup; |
25d8f0a2 | 1800 | |
6de9cd9a DN |
1801 | if (m == MATCH_NO) |
1802 | as = gfc_copy_array_spec (current_as); | |
d3a9eea2 TB |
1803 | else if (current_as) |
1804 | merge_array_spec (current_as, as, true); | |
6de9cd9a | 1805 | |
11126dc0 AL |
1806 | if (gfc_option.flag_cray_pointer) |
1807 | cp_as = gfc_copy_array_spec (as); | |
1808 | ||
f5ca06e6 DK |
1809 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1810 | determine (and check) whether it can be implied-shape. If it | |
1811 | was parsed as assumed-size, change it because PARAMETERs can not | |
1812 | be assumed-size. */ | |
1813 | if (as) | |
1814 | { | |
1815 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1816 | { | |
1817 | m = MATCH_ERROR; | |
1818 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1819 | name, &var_locus); | |
1820 | goto cleanup; | |
1821 | } | |
1822 | ||
1823 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1824 | && current_attr.flavor == FL_PARAMETER) | |
1825 | as->type = AS_IMPLIED_SHAPE; | |
1826 | ||
1827 | if (as->type == AS_IMPLIED_SHAPE | |
1828 | && gfc_notify_std (GFC_STD_F2008, | |
1829 | "Fortran 2008: Implied-shape array at %L", | |
1830 | &var_locus) == FAILURE) | |
1831 | { | |
1832 | m = MATCH_ERROR; | |
1833 | goto cleanup; | |
1834 | } | |
1835 | } | |
1836 | ||
6de9cd9a DN |
1837 | char_len = NULL; |
1838 | cl = NULL; | |
e69afb29 | 1839 | cl_deferred = false; |
6de9cd9a DN |
1840 | |
1841 | if (current_ts.type == BT_CHARACTER) | |
1842 | { | |
e69afb29 | 1843 | switch (match_char_length (&char_len, &cl_deferred)) |
6de9cd9a DN |
1844 | { |
1845 | case MATCH_YES: | |
b76e28c6 | 1846 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1847 | |
1848 | cl->length = char_len; | |
1849 | break; | |
1850 | ||
949d5b72 | 1851 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1852 | element. Also copy assumed lengths. */ |
6de9cd9a | 1853 | case MATCH_NO: |
9b21a380 | 1854 | if (elem > 1 |
bc21d315 JW |
1855 | && (current_ts.u.cl->length == NULL |
1856 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1857 | { |
b76e28c6 | 1858 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1859 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1860 | } |
1861 | else | |
bc21d315 | 1862 | cl = current_ts.u.cl; |
949d5b72 | 1863 | |
e69afb29 SK |
1864 | cl_deferred = current_ts.deferred; |
1865 | ||
6de9cd9a DN |
1866 | break; |
1867 | ||
1868 | case MATCH_ERROR: | |
1869 | goto cleanup; | |
1870 | } | |
1871 | } | |
1872 | ||
83d890b9 | 1873 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1874 | then we want to set the type & bail out. */ |
83d890b9 AL |
1875 | if (gfc_option.flag_cray_pointer) |
1876 | { | |
1877 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1878 | if (sym != NULL && sym->attr.cray_pointee) | |
1879 | { | |
1880 | sym->ts.type = current_ts.type; | |
1881 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
1882 | sym->ts.u.cl = cl; |
1883 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
1884 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1885 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 AL |
1886 | m = MATCH_YES; |
1887 | ||
1888 | /* Check to see if we have an array specification. */ | |
1889 | if (cp_as != NULL) | |
1890 | { | |
1891 | if (sym->as != NULL) | |
1892 | { | |
e25a0da3 | 1893 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1894 | gfc_free_array_spec (cp_as); |
1895 | m = MATCH_ERROR; | |
1896 | goto cleanup; | |
1897 | } | |
1898 | else | |
1899 | { | |
1900 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1901 | gfc_internal_error ("Couldn't set pointee array spec."); | |
d51347f9 | 1902 | |
83d890b9 | 1903 | /* Fix the array spec. */ |
d51347f9 | 1904 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1905 | if (m == MATCH_ERROR) |
1906 | goto cleanup; | |
1907 | } | |
d51347f9 | 1908 | } |
83d890b9 AL |
1909 | goto cleanup; |
1910 | } | |
1911 | else | |
1912 | { | |
1913 | gfc_free_array_spec (cp_as); | |
1914 | } | |
1915 | } | |
d51347f9 | 1916 | |
3070bab4 JW |
1917 | /* Procedure pointer as function result. */ |
1918 | if (gfc_current_state () == COMP_FUNCTION | |
1919 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1920 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1921 | strcpy (name, "ppr@"); | |
1922 | ||
1923 | if (gfc_current_state () == COMP_FUNCTION | |
1924 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1925 | && gfc_current_block ()->result | |
1926 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1927 | strcpy (name, "ppr@"); | |
d51347f9 | 1928 | |
6de9cd9a DN |
1929 | /* OK, we've successfully matched the declaration. Now put the |
1930 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1931 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1932 | perfectly legal: |
1933 | ||
1934 | integer, parameter :: i = huge(i) | |
1935 | ||
1936 | This is only true for parameters or variables of a basic type. | |
1937 | For components of derived types, it is not true, so we don't | |
1938 | create a symbol for those yet. If we fail to create the symbol, | |
1939 | bail out. */ | |
1940 | if (gfc_current_state () != COMP_DERIVED | |
e69afb29 | 1941 | && build_sym (name, cl, cl_deferred, &as, &var_locus) == FAILURE) |
6de9cd9a | 1942 | { |
72af9f0b PT |
1943 | m = MATCH_ERROR; |
1944 | goto cleanup; | |
1945 | } | |
1946 | ||
6133c68a TS |
1947 | /* An interface body specifies all of the procedure's |
1948 | characteristics and these shall be consistent with those | |
1949 | specified in the procedure definition, except that the interface | |
1950 | may specify a procedure that is not pure if the procedure is | |
1951 | defined to be pure(12.3.2). */ | |
d646bbce | 1952 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
636dff67 SK |
1953 | && gfc_current_ns->proc_name |
1954 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
bc21d315 | 1955 | && current_ts.u.derived->ns != gfc_current_ns) |
5a8af0b4 PT |
1956 | { |
1957 | gfc_symtree *st; | |
bc21d315 JW |
1958 | st = gfc_find_symtree (gfc_current_ns->sym_root, current_ts.u.derived->name); |
1959 | if (!(current_ts.u.derived->attr.imported | |
5a8af0b4 | 1960 | && st != NULL |
c3f34952 | 1961 | && gfc_find_dt_in_generic (st->n.sym) == current_ts.u.derived) |
5a8af0b4 PT |
1962 | && !gfc_current_ns->has_import_set) |
1963 | { | |
c3f34952 | 1964 | gfc_error ("The type of '%s' at %C has not been declared within the " |
5a8af0b4 PT |
1965 | "interface", name); |
1966 | m = MATCH_ERROR; | |
1967 | goto cleanup; | |
1968 | } | |
6de9cd9a | 1969 | } |
bb9de0c4 JW |
1970 | |
1971 | if (check_function_name (name) == FAILURE) | |
6de9cd9a | 1972 | { |
6de9cd9a DN |
1973 | m = MATCH_ERROR; |
1974 | goto cleanup; | |
1975 | } | |
1976 | ||
294fbfc8 TS |
1977 | /* We allow old-style initializations of the form |
1978 | integer i /2/, j(4) /3*3, 1/ | |
1979 | (if no colon has been seen). These are different from data | |
1980 | statements in that initializers are only allowed to apply to the | |
1981 | variable immediately preceding, i.e. | |
1982 | integer i, j /1, 2/ | |
1983 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1984 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
1985 | |
1986 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1987 | { | |
1988 | if (gfc_notify_std (GFC_STD_GNU, "Extension: Old-style " | |
1989 | "initialization at %C") == FAILURE) | |
1990 | return MATCH_ERROR; | |
d51347f9 | 1991 | |
294fbfc8 TS |
1992 | return match_old_style_init (name); |
1993 | } | |
1994 | ||
6de9cd9a DN |
1995 | /* The double colon must be present in order to have initializers. |
1996 | Otherwise the statement is ambiguous with an assignment statement. */ | |
1997 | if (colon_seen) | |
1998 | { | |
1999 | if (gfc_match (" =>") == MATCH_YES) | |
2000 | { | |
6de9cd9a DN |
2001 | if (!current_attr.pointer) |
2002 | { | |
2003 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2004 | m = MATCH_ERROR; | |
2005 | goto cleanup; | |
2006 | } | |
2007 | ||
80f95228 | 2008 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2009 | if (m != MATCH_YES) |
2010 | goto cleanup; | |
6de9cd9a DN |
2011 | } |
2012 | else if (gfc_match_char ('=') == MATCH_YES) | |
2013 | { | |
2014 | if (current_attr.pointer) | |
2015 | { | |
636dff67 SK |
2016 | gfc_error ("Pointer initialization at %C requires '=>', " |
2017 | "not '='"); | |
6de9cd9a DN |
2018 | m = MATCH_ERROR; |
2019 | goto cleanup; | |
2020 | } | |
2021 | ||
2022 | m = gfc_match_init_expr (&initializer); | |
2023 | if (m == MATCH_NO) | |
2024 | { | |
2025 | gfc_error ("Expected an initialization expression at %C"); | |
2026 | m = MATCH_ERROR; | |
2027 | } | |
2028 | ||
ade20620 TB |
2029 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2030 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2031 | { |
636dff67 SK |
2032 | gfc_error ("Initialization of variable at %C is not allowed in " |
2033 | "a PURE procedure"); | |
6de9cd9a DN |
2034 | m = MATCH_ERROR; |
2035 | } | |
2036 | ||
2037 | if (m != MATCH_YES) | |
2038 | goto cleanup; | |
2039 | } | |
cb44ab82 VL |
2040 | } |
2041 | ||
5046aff5 PT |
2042 | if (initializer != NULL && current_attr.allocatable |
2043 | && gfc_current_state () == COMP_DERIVED) | |
2044 | { | |
636dff67 SK |
2045 | gfc_error ("Initialization of allocatable component at %C is not " |
2046 | "allowed"); | |
5046aff5 PT |
2047 | m = MATCH_ERROR; |
2048 | goto cleanup; | |
2049 | } | |
2050 | ||
54b4ba60 | 2051 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2052 | NULL here, because we sometimes also need to check if a |
2053 | declaration *must* have an initialization expression. */ | |
2054 | if (gfc_current_state () != COMP_DERIVED) | |
2055 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2056 | else | |
54b4ba60 | 2057 | { |
5046aff5 | 2058 | if (current_ts.type == BT_DERIVED |
636dff67 | 2059 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2060 | initializer = gfc_default_initializer (¤t_ts); |
2061 | t = build_struct (name, cl, &initializer, &as); | |
2062 | } | |
6de9cd9a DN |
2063 | |
2064 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
2065 | ||
2066 | cleanup: | |
2067 | /* Free stuff up and return. */ | |
2068 | gfc_free_expr (initializer); | |
2069 | gfc_free_array_spec (as); | |
2070 | ||
2071 | return m; | |
2072 | } | |
2073 | ||
2074 | ||
b2b81a3f BM |
2075 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2076 | This assumes that the byte size is equal to the kind number for | |
2077 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2078 | |
2079 | match | |
636dff67 | 2080 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2081 | { |
2082 | match m; | |
5cf54585 | 2083 | int original_kind; |
6de9cd9a DN |
2084 | |
2085 | if (gfc_match_char ('*') != MATCH_YES) | |
2086 | return MATCH_NO; | |
2087 | ||
5cf54585 | 2088 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2089 | if (m != MATCH_YES) |
2090 | return MATCH_ERROR; | |
2091 | ||
e45b3c75 ES |
2092 | original_kind = ts->kind; |
2093 | ||
6de9cd9a | 2094 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2095 | if (ts->type == BT_COMPLEX) |
2096 | { | |
2097 | if (ts->kind % 2) | |
636dff67 SK |
2098 | { |
2099 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2100 | gfc_basic_typename (ts->type), original_kind); | |
2101 | return MATCH_ERROR; | |
2102 | } | |
e45b3c75 ES |
2103 | ts->kind /= 2; |
2104 | } | |
6de9cd9a | 2105 | |
e7a2d5fb | 2106 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2107 | { |
e45b3c75 | 2108 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2109 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2110 | return MATCH_ERROR; |
2111 | } | |
2112 | ||
df8652dc SK |
2113 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
2114 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
2115 | return MATCH_ERROR; | |
2116 | ||
6de9cd9a DN |
2117 | return MATCH_YES; |
2118 | } | |
2119 | ||
2120 | ||
2121 | /* Match a kind specification. Since kinds are generally optional, we | |
2122 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2123 | string is found, then we know we have an error. */ | |
2124 | ||
2125 | match | |
e2d29968 | 2126 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2127 | { |
e2d29968 | 2128 | locus where, loc; |
6de9cd9a DN |
2129 | gfc_expr *e; |
2130 | match m, n; | |
96ee3a4a | 2131 | char c; |
6de9cd9a DN |
2132 | const char *msg; |
2133 | ||
2134 | m = MATCH_NO; | |
e2d29968 | 2135 | n = MATCH_YES; |
6de9cd9a DN |
2136 | e = NULL; |
2137 | ||
e2d29968 PT |
2138 | where = loc = gfc_current_locus; |
2139 | ||
2140 | if (kind_expr_only) | |
2141 | goto kind_expr; | |
6de9cd9a DN |
2142 | |
2143 | if (gfc_match_char ('(') == MATCH_NO) | |
2144 | return MATCH_NO; | |
2145 | ||
2146 | /* Also gobbles optional text. */ | |
2147 | if (gfc_match (" kind = ") == MATCH_YES) | |
2148 | m = MATCH_ERROR; | |
2149 | ||
e2d29968 PT |
2150 | loc = gfc_current_locus; |
2151 | ||
2152 | kind_expr: | |
6de9cd9a | 2153 | n = gfc_match_init_expr (&e); |
e2d29968 | 2154 | |
6de9cd9a | 2155 | if (n != MATCH_YES) |
e2d29968 | 2156 | { |
1c8bcdf7 | 2157 | if (gfc_matching_function) |
e2d29968 | 2158 | { |
1c8bcdf7 PT |
2159 | /* The function kind expression might include use associated or |
2160 | imported parameters and try again after the specification | |
2161 | expressions..... */ | |
e2d29968 PT |
2162 | if (gfc_match_char (')') != MATCH_YES) |
2163 | { | |
2164 | gfc_error ("Missing right parenthesis at %C"); | |
2165 | m = MATCH_ERROR; | |
2166 | goto no_match; | |
2167 | } | |
2168 | ||
2169 | gfc_free_expr (e); | |
e2d29968 PT |
2170 | gfc_undo_symbols (); |
2171 | return MATCH_YES; | |
2172 | } | |
2173 | else | |
2174 | { | |
2175 | /* ....or else, the match is real. */ | |
2176 | if (n == MATCH_NO) | |
2177 | gfc_error ("Expected initialization expression at %C"); | |
2178 | if (n != MATCH_YES) | |
2179 | return MATCH_ERROR; | |
2180 | } | |
2181 | } | |
6de9cd9a DN |
2182 | |
2183 | if (e->rank != 0) | |
2184 | { | |
2185 | gfc_error ("Expected scalar initialization expression at %C"); | |
2186 | m = MATCH_ERROR; | |
2187 | goto no_match; | |
2188 | } | |
2189 | ||
2190 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2191 | |
6de9cd9a DN |
2192 | if (msg != NULL) |
2193 | { | |
2194 | gfc_error (msg); | |
2195 | m = MATCH_ERROR; | |
2196 | goto no_match; | |
2197 | } | |
2198 | ||
a8b3b0b6 CR |
2199 | /* Before throwing away the expression, let's see if we had a |
2200 | C interoperable kind (and store the fact). */ | |
2201 | if (e->ts.is_c_interop == 1) | |
2202 | { | |
2203 | /* Mark this as c interoperable if being declared with one | |
2204 | of the named constants from iso_c_binding. */ | |
2205 | ts->is_c_interop = e->ts.is_iso_c; | |
2206 | ts->f90_type = e->ts.f90_type; | |
2207 | } | |
2208 | ||
6de9cd9a DN |
2209 | gfc_free_expr (e); |
2210 | e = NULL; | |
2211 | ||
a8b3b0b6 CR |
2212 | /* Ignore errors to this point, if we've gotten here. This means |
2213 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2214 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2215 | { |
2216 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2217 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2218 | gfc_current_locus = where; |
2219 | return MATCH_ERROR; | |
6de9cd9a | 2220 | } |
96ee3a4a | 2221 | |
2ec855f1 TB |
2222 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2223 | if, e.g., c_double is used for COMPLEX as the standard | |
2224 | explicitly says that the kind type parameter for complex and real | |
2225 | variable is the same, i.e. c_float == c_float_complex. */ | |
2226 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2227 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2228 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
2be51762 TB |
2229 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2230 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2231 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2232 | |
96ee3a4a | 2233 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2234 | if ((c = gfc_next_ascii_char ()) != ')' |
2235 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2236 | { |
96ee3a4a TB |
2237 | if (ts->type == BT_CHARACTER) |
2238 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2239 | else | |
2240 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2241 | m = MATCH_ERROR; |
6de9cd9a | 2242 | } |
a8b3b0b6 CR |
2243 | else |
2244 | /* All tests passed. */ | |
2245 | m = MATCH_YES; | |
6de9cd9a | 2246 | |
a8b3b0b6 CR |
2247 | if(m == MATCH_ERROR) |
2248 | gfc_current_locus = where; | |
2249 | ||
2250 | /* Return what we know from the test(s). */ | |
2251 | return m; | |
6de9cd9a DN |
2252 | |
2253 | no_match: | |
2254 | gfc_free_expr (e); | |
63645982 | 2255 | gfc_current_locus = where; |
6de9cd9a DN |
2256 | return m; |
2257 | } | |
2258 | ||
2259 | ||
187de1ed FXC |
2260 | static match |
2261 | match_char_kind (int * kind, int * is_iso_c) | |
2262 | { | |
2263 | locus where; | |
2264 | gfc_expr *e; | |
2265 | match m, n; | |
2266 | const char *msg; | |
2267 | ||
2268 | m = MATCH_NO; | |
2269 | e = NULL; | |
2270 | where = gfc_current_locus; | |
2271 | ||
2272 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2273 | |
1c8bcdf7 | 2274 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2275 | { |
1c8bcdf7 PT |
2276 | /* The expression might include use-associated or imported |
2277 | parameters and try again after the specification | |
2278 | expressions. */ | |
96ee3a4a | 2279 | gfc_free_expr (e); |
96ee3a4a TB |
2280 | gfc_undo_symbols (); |
2281 | return MATCH_YES; | |
2282 | } | |
2283 | ||
187de1ed FXC |
2284 | if (n == MATCH_NO) |
2285 | gfc_error ("Expected initialization expression at %C"); | |
2286 | if (n != MATCH_YES) | |
2287 | return MATCH_ERROR; | |
2288 | ||
2289 | if (e->rank != 0) | |
2290 | { | |
2291 | gfc_error ("Expected scalar initialization expression at %C"); | |
2292 | m = MATCH_ERROR; | |
2293 | goto no_match; | |
2294 | } | |
2295 | ||
2296 | msg = gfc_extract_int (e, kind); | |
2297 | *is_iso_c = e->ts.is_iso_c; | |
2298 | if (msg != NULL) | |
2299 | { | |
2300 | gfc_error (msg); | |
2301 | m = MATCH_ERROR; | |
2302 | goto no_match; | |
2303 | } | |
2304 | ||
2305 | gfc_free_expr (e); | |
2306 | ||
2307 | /* Ignore errors to this point, if we've gotten here. This means | |
2308 | we ignore the m=MATCH_ERROR from above. */ | |
2309 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2310 | { | |
2311 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2312 | m = MATCH_ERROR; | |
2313 | } | |
2314 | else | |
2315 | /* All tests passed. */ | |
2316 | m = MATCH_YES; | |
2317 | ||
2318 | if (m == MATCH_ERROR) | |
2319 | gfc_current_locus = where; | |
2320 | ||
2321 | /* Return what we know from the test(s). */ | |
2322 | return m; | |
2323 | ||
2324 | no_match: | |
2325 | gfc_free_expr (e); | |
2326 | gfc_current_locus = where; | |
2327 | return m; | |
2328 | } | |
2329 | ||
8234e5e0 | 2330 | |
6de9cd9a DN |
2331 | /* Match the various kind/length specifications in a CHARACTER |
2332 | declaration. We don't return MATCH_NO. */ | |
2333 | ||
8234e5e0 SK |
2334 | match |
2335 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2336 | { |
187de1ed | 2337 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2338 | gfc_charlen *cl; |
2339 | gfc_expr *len; | |
2340 | match m; | |
e69afb29 | 2341 | bool deferred; |
187de1ed | 2342 | |
6de9cd9a DN |
2343 | len = NULL; |
2344 | seen_length = 0; | |
187de1ed FXC |
2345 | kind = 0; |
2346 | is_iso_c = 0; | |
e69afb29 | 2347 | deferred = false; |
6de9cd9a DN |
2348 | |
2349 | /* Try the old-style specification first. */ | |
2350 | old_char_selector = 0; | |
2351 | ||
e69afb29 | 2352 | m = match_char_length (&len, &deferred); |
6de9cd9a DN |
2353 | if (m != MATCH_NO) |
2354 | { | |
2355 | if (m == MATCH_YES) | |
2356 | old_char_selector = 1; | |
2357 | seen_length = 1; | |
2358 | goto done; | |
2359 | } | |
2360 | ||
2361 | m = gfc_match_char ('('); | |
2362 | if (m != MATCH_YES) | |
2363 | { | |
a8b3b0b6 | 2364 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2365 | goto done; |
2366 | } | |
2367 | ||
a8b3b0b6 | 2368 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2369 | if (gfc_match (" kind =") == MATCH_YES) |
2370 | { | |
187de1ed | 2371 | m = match_char_kind (&kind, &is_iso_c); |
a8b3b0b6 | 2372 | |
6de9cd9a DN |
2373 | if (m == MATCH_ERROR) |
2374 | goto done; | |
2375 | if (m == MATCH_NO) | |
2376 | goto syntax; | |
2377 | ||
2378 | if (gfc_match (" , len =") == MATCH_NO) | |
2379 | goto rparen; | |
2380 | ||
e69afb29 | 2381 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2382 | if (m == MATCH_NO) |
2383 | goto syntax; | |
2384 | if (m == MATCH_ERROR) | |
2385 | goto done; | |
2386 | seen_length = 1; | |
2387 | ||
2388 | goto rparen; | |
2389 | } | |
2390 | ||
66e4ab31 | 2391 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2392 | if (gfc_match (" len =") == MATCH_YES) |
2393 | { | |
e69afb29 | 2394 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2395 | if (m == MATCH_NO) |
2396 | goto syntax; | |
2397 | if (m == MATCH_ERROR) | |
2398 | goto done; | |
2399 | seen_length = 1; | |
2400 | ||
2401 | if (gfc_match_char (')') == MATCH_YES) | |
2402 | goto done; | |
2403 | ||
2404 | if (gfc_match (" , kind =") != MATCH_YES) | |
2405 | goto syntax; | |
2406 | ||
187de1ed FXC |
2407 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2408 | goto done; | |
6de9cd9a DN |
2409 | |
2410 | goto rparen; | |
2411 | } | |
2412 | ||
66e4ab31 | 2413 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2414 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2415 | if (m == MATCH_NO) |
2416 | goto syntax; | |
2417 | if (m == MATCH_ERROR) | |
2418 | goto done; | |
2419 | seen_length = 1; | |
2420 | ||
2421 | m = gfc_match_char (')'); | |
2422 | if (m == MATCH_YES) | |
2423 | goto done; | |
2424 | ||
2425 | if (gfc_match_char (',') != MATCH_YES) | |
2426 | goto syntax; | |
2427 | ||
a8b3b0b6 | 2428 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2429 | |
187de1ed | 2430 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2431 | if (m == MATCH_ERROR) |
2432 | goto done; | |
2433 | if (m == MATCH_NO) | |
2434 | goto syntax; | |
2435 | ||
2436 | rparen: | |
2437 | /* Require a right-paren at this point. */ | |
2438 | m = gfc_match_char (')'); | |
2439 | if (m == MATCH_YES) | |
2440 | goto done; | |
2441 | ||
2442 | syntax: | |
2443 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2444 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2445 | gfc_free_expr (len); |
2446 | return m; | |
6de9cd9a DN |
2447 | |
2448 | done: | |
a99d95a2 PT |
2449 | /* Deal with character functions after USE and IMPORT statements. */ |
2450 | if (gfc_matching_function) | |
1c8bcdf7 | 2451 | { |
a99d95a2 | 2452 | gfc_free_expr (len); |
1c8bcdf7 PT |
2453 | gfc_undo_symbols (); |
2454 | return MATCH_YES; | |
2455 | } | |
2456 | ||
6de9cd9a DN |
2457 | if (m != MATCH_YES) |
2458 | { | |
2459 | gfc_free_expr (len); | |
2460 | return m; | |
2461 | } | |
2462 | ||
2463 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2464 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2465 | |
2466 | if (seen_length == 0) | |
b7e75771 | 2467 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2468 | else |
5cd09fac | 2469 | cl->length = len; |
6de9cd9a | 2470 | |
bc21d315 | 2471 | ts->u.cl = cl; |
187de1ed | 2472 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2473 | ts->deferred = deferred; |
6de9cd9a | 2474 | |
a8b3b0b6 CR |
2475 | /* We have to know if it was a c interoperable kind so we can |
2476 | do accurate type checking of bind(c) procs, etc. */ | |
187de1ed FXC |
2477 | if (kind != 0) |
2478 | /* Mark this as c interoperable if being declared with one | |
2479 | of the named constants from iso_c_binding. */ | |
2480 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2481 | else if (len != NULL) |
187de1ed FXC |
2482 | /* Here, we might have parsed something such as: character(c_char) |
2483 | In this case, the parsing code above grabs the c_char when | |
2484 | looking for the length (line 1690, roughly). it's the last | |
2485 | testcase for parsing the kind params of a character variable. | |
2486 | However, it's not actually the length. this seems like it | |
2487 | could be an error. | |
2488 | To see if the user used a C interop kind, test the expr | |
2489 | of the so called length, and see if it's C interoperable. */ | |
2490 | ts->is_c_interop = len->ts.is_iso_c; | |
a8b3b0b6 | 2491 | |
6de9cd9a DN |
2492 | return MATCH_YES; |
2493 | } | |
2494 | ||
2495 | ||
e74f1cc8 JW |
2496 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2497 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2498 | IMPLICIT statements. |
2499 | ||
d51347f9 | 2500 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2501 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2502 | statement correctly. */ |
2503 | ||
e2d29968 | 2504 | match |
e74f1cc8 | 2505 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2506 | { |
2507 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2508 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2509 | match m; |
8fc541d3 | 2510 | char c; |
0fb56814 | 2511 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2512 | const char *dt_name; |
6de9cd9a | 2513 | |
1c8bcdf7 PT |
2514 | /* A belt and braces check that the typespec is correctly being treated |
2515 | as a deferred characteristic association. */ | |
2516 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2517 | && (gfc_current_block ()->result->ts.kind == -1) |
2518 | && (ts->kind == -1); | |
6de9cd9a | 2519 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2520 | if (seen_deferred_kind) |
2521 | ts->kind = -1; | |
6de9cd9a | 2522 | |
a8b3b0b6 CR |
2523 | /* Clear the current binding label, in case one is given. */ |
2524 | curr_binding_label[0] = '\0'; | |
2525 | ||
5f700e6d AL |
2526 | if (gfc_match (" byte") == MATCH_YES) |
2527 | { | |
0b3624f6 | 2528 | if (gfc_notify_std (GFC_STD_GNU, "Extension: BYTE type at %C") |
5f700e6d AL |
2529 | == FAILURE) |
2530 | return MATCH_ERROR; | |
2531 | ||
2532 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2533 | { | |
2534 | gfc_error ("BYTE type used at %C " | |
2535 | "is not available on the target machine"); | |
2536 | return MATCH_ERROR; | |
2537 | } | |
d51347f9 | 2538 | |
5f700e6d AL |
2539 | ts->type = BT_INTEGER; |
2540 | ts->kind = 1; | |
2541 | return MATCH_YES; | |
2542 | } | |
2543 | ||
0fb56814 TB |
2544 | |
2545 | m = gfc_match (" type ( %n", name); | |
2546 | matched_type = (m == MATCH_YES); | |
2547 | ||
2548 | if ((matched_type && strcmp ("integer", name) == 0) | |
2549 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2550 | { |
2551 | ts->type = BT_INTEGER; | |
9d64df18 | 2552 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2553 | goto get_kind; |
2554 | } | |
2555 | ||
0fb56814 TB |
2556 | if ((matched_type && strcmp ("character", name) == 0) |
2557 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2558 | { |
0fb56814 TB |
2559 | if (matched_type |
2560 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2561 | "intrinsic-type-spec at %C") == FAILURE) | |
2562 | return MATCH_ERROR; | |
2563 | ||
6de9cd9a | 2564 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2565 | if (implicit_flag == 0) |
0fb56814 | 2566 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2567 | else |
0fb56814 TB |
2568 | m = MATCH_YES; |
2569 | ||
2570 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2571 | m = MATCH_ERROR; | |
2572 | ||
2573 | return m; | |
6de9cd9a DN |
2574 | } |
2575 | ||
0fb56814 TB |
2576 | if ((matched_type && strcmp ("real", name) == 0) |
2577 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2578 | { |
2579 | ts->type = BT_REAL; | |
9d64df18 | 2580 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2581 | goto get_kind; |
2582 | } | |
2583 | ||
0fb56814 TB |
2584 | if ((matched_type |
2585 | && (strcmp ("doubleprecision", name) == 0 | |
2586 | || (strcmp ("double", name) == 0 | |
2587 | && gfc_match (" precision") == MATCH_YES))) | |
2588 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2589 | { |
0fb56814 TB |
2590 | if (matched_type |
2591 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2592 | "intrinsic-type-spec at %C") == FAILURE) | |
2593 | return MATCH_ERROR; | |
2594 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2595 | return MATCH_ERROR; | |
2596 | ||
6de9cd9a | 2597 | ts->type = BT_REAL; |
9d64df18 | 2598 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2599 | return MATCH_YES; |
2600 | } | |
2601 | ||
0fb56814 TB |
2602 | if ((matched_type && strcmp ("complex", name) == 0) |
2603 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2604 | { |
2605 | ts->type = BT_COMPLEX; | |
9d64df18 | 2606 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2607 | goto get_kind; |
2608 | } | |
2609 | ||
0fb56814 TB |
2610 | if ((matched_type |
2611 | && (strcmp ("doublecomplex", name) == 0 | |
2612 | || (strcmp ("double", name) == 0 | |
2613 | && gfc_match (" complex") == MATCH_YES))) | |
2614 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2615 | { |
0fb56814 TB |
2616 | if (gfc_notify_std (GFC_STD_GNU, "Extension: DOUBLE COMPLEX at %C") |
2617 | == FAILURE) | |
2618 | return MATCH_ERROR; | |
2619 | ||
2620 | if (matched_type | |
2621 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2622 | "intrinsic-type-spec at %C") == FAILURE) | |
2623 | return MATCH_ERROR; | |
2624 | ||
2625 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2626 | return MATCH_ERROR; |
2627 | ||
6de9cd9a | 2628 | ts->type = BT_COMPLEX; |
9d64df18 | 2629 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2630 | return MATCH_YES; |
2631 | } | |
2632 | ||
0fb56814 TB |
2633 | if ((matched_type && strcmp ("logical", name) == 0) |
2634 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2635 | { |
2636 | ts->type = BT_LOGICAL; | |
9d64df18 | 2637 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2638 | goto get_kind; |
2639 | } | |
2640 | ||
0fb56814 TB |
2641 | if (matched_type) |
2642 | m = gfc_match_char (')'); | |
2643 | ||
cf2b3c22 TB |
2644 | if (m == MATCH_YES) |
2645 | ts->type = BT_DERIVED; | |
2646 | else | |
727e8544 | 2647 | { |
528622fd JW |
2648 | /* Match CLASS declarations. */ |
2649 | m = gfc_match (" class ( * )"); | |
2650 | if (m == MATCH_ERROR) | |
2651 | return MATCH_ERROR; | |
2652 | else if (m == MATCH_YES) | |
2653 | { | |
2654 | gfc_fatal_error ("Unlimited polymorphism at %C not yet supported"); | |
2655 | return MATCH_ERROR; | |
2656 | } | |
2657 | ||
727e8544 JW |
2658 | m = gfc_match (" class ( %n )", name); |
2659 | if (m != MATCH_YES) | |
2660 | return m; | |
cf2b3c22 | 2661 | ts->type = BT_CLASS; |
727e8544 | 2662 | |
e74f1cc8 JW |
2663 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: CLASS statement at %C") |
2664 | == FAILURE) | |
2665 | return MATCH_ERROR; | |
727e8544 | 2666 | } |
6de9cd9a | 2667 | |
1c8bcdf7 PT |
2668 | /* Defer association of the derived type until the end of the |
2669 | specification block. However, if the derived type can be | |
2670 | found, add it to the typespec. */ | |
2671 | if (gfc_matching_function) | |
e2d29968 | 2672 | { |
bc21d315 | 2673 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2674 | if (gfc_current_state () != COMP_INTERFACE |
2675 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2676 | { |
2677 | sym = gfc_find_dt_in_generic (sym); | |
2678 | ts->u.derived = sym; | |
2679 | } | |
e2d29968 PT |
2680 | return MATCH_YES; |
2681 | } | |
2682 | ||
2683 | /* Search for the name but allow the components to be defined later. If | |
2684 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 TB |
2685 | the type could not be accessed at that point. The actual derived type is |
2686 | stored in a symtree with the first letter of the name captialized; the | |
2687 | symtree with the all lower-case name contains the associated | |
2688 | generic function. */ | |
2689 | dt_name = gfc_get_string ("%c%s", | |
2690 | (char) TOUPPER ((unsigned char) name[0]), | |
2691 | (const char*)&name[1]); | |
1c8bcdf7 | 2692 | sym = NULL; |
c3f34952 TB |
2693 | dt_sym = NULL; |
2694 | if (ts->kind != -1) | |
6de9cd9a | 2695 | { |
c3f34952 TB |
2696 | gfc_get_ha_symbol (name, &sym); |
2697 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2698 | { | |
2699 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2700 | return MATCH_ERROR; | |
2701 | } | |
2702 | if (sym->generic && !dt_sym) | |
2703 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2704 | } |
e2d29968 PT |
2705 | else if (ts->kind == -1) |
2706 | { | |
1c8bcdf7 PT |
2707 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2708 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2709 | gfc_find_symbol (name, NULL, iface, &sym); |
2710 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
e2d29968 PT |
2711 | { |
2712 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2713 | return MATCH_ERROR; | |
2714 | } | |
c3f34952 TB |
2715 | if (sym && sym->generic && !dt_sym) |
2716 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2717 | |
1c8bcdf7 | 2718 | ts->kind = 0; |
e2d29968 PT |
2719 | if (sym == NULL) |
2720 | return MATCH_NO; | |
2721 | } | |
6de9cd9a | 2722 | |
c3f34952 TB |
2723 | if ((sym->attr.flavor != FL_UNKNOWN |
2724 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2725 | || sym->attr.subroutine) | |
2726 | { | |
2727 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2728 | "entity at %L, which has the same name", name, | |
2729 | &sym->declared_at); | |
2730 | return MATCH_ERROR; | |
2731 | } | |
6de9cd9a | 2732 | |
1c8bcdf7 | 2733 | gfc_set_sym_referenced (sym); |
c3f34952 TB |
2734 | if (!sym->attr.generic |
2735 | && gfc_add_generic (&sym->attr, sym->name, NULL) == FAILURE) | |
2736 | return MATCH_ERROR; | |
2737 | ||
2738 | if (!sym->attr.function | |
2739 | && gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
2740 | return MATCH_ERROR; | |
2741 | ||
2742 | if (!dt_sym) | |
2743 | { | |
2744 | gfc_interface *intr, *head; | |
2745 | ||
2746 | /* Use upper case to save the actual derived-type symbol. */ | |
2747 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2748 | dt_sym->name = gfc_get_string (sym->name); | |
2749 | head = sym->generic; | |
2750 | intr = gfc_get_interface (); | |
2751 | intr->sym = dt_sym; | |
2752 | intr->where = gfc_current_locus; | |
2753 | intr->next = head; | |
2754 | sym->generic = intr; | |
2755 | sym->attr.if_source = IFSRC_DECL; | |
2756 | } | |
2757 | ||
2758 | gfc_set_sym_referenced (dt_sym); | |
2759 | ||
2760 | if (dt_sym->attr.flavor != FL_DERIVED | |
2761 | && gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL) | |
2762 | == FAILURE) | |
2763 | return MATCH_ERROR; | |
2764 | ||
2765 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
2766 | |
2767 | return MATCH_YES; | |
2768 | ||
2769 | get_kind: | |
0fb56814 TB |
2770 | if (matched_type |
2771 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2772 | "intrinsic-type-spec at %C") == FAILURE) | |
2773 | return MATCH_ERROR; | |
2774 | ||
6de9cd9a DN |
2775 | /* For all types except double, derived and character, look for an |
2776 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2777 | if (implicit_flag == 1) |
0fb56814 TB |
2778 | { |
2779 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2780 | return MATCH_ERROR; | |
2781 | ||
2782 | return MATCH_YES; | |
2783 | } | |
6de9cd9a | 2784 | |
0ff0dfbf TS |
2785 | if (gfc_current_form == FORM_FREE) |
2786 | { | |
0b3624f6 SK |
2787 | c = gfc_peek_ascii_char (); |
2788 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 2789 | && c != ':' && c != ',') |
0fb56814 TB |
2790 | { |
2791 | if (matched_type && c == ')') | |
2792 | { | |
2793 | gfc_next_ascii_char (); | |
2794 | return MATCH_YES; | |
2795 | } | |
2796 | return MATCH_NO; | |
2797 | } | |
0ff0dfbf TS |
2798 | } |
2799 | ||
e2d29968 | 2800 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a DN |
2801 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2802 | m = gfc_match_old_kind_spec (ts); | |
2803 | ||
0fb56814 TB |
2804 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2805 | return MATCH_ERROR; | |
2806 | ||
1c8bcdf7 PT |
2807 | /* Defer association of the KIND expression of function results |
2808 | until after USE and IMPORT statements. */ | |
2809 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2810 | || gfc_matching_function) | |
2811 | return MATCH_YES; | |
2812 | ||
6de9cd9a DN |
2813 | if (m == MATCH_NO) |
2814 | m = MATCH_YES; /* No kind specifier found. */ | |
2815 | ||
2816 | return m; | |
2817 | } | |
2818 | ||
2819 | ||
e5ddaa24 TS |
2820 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2821 | already matched in parse.c, or we would not end up here in the | |
2822 | first place. So the only thing we need to check, is if there is | |
2823 | trailing garbage. If not, the match is successful. */ | |
2824 | ||
2825 | match | |
2826 | gfc_match_implicit_none (void) | |
2827 | { | |
e5ddaa24 TS |
2828 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2829 | } | |
2830 | ||
2831 | ||
2832 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2833 | ||
2834 | static match | |
1107b970 | 2835 | match_implicit_range (void) |
e5ddaa24 | 2836 | { |
8fc541d3 FXC |
2837 | char c, c1, c2; |
2838 | int inner; | |
e5ddaa24 TS |
2839 | locus cur_loc; |
2840 | ||
2841 | cur_loc = gfc_current_locus; | |
2842 | ||
2843 | gfc_gobble_whitespace (); | |
8fc541d3 | 2844 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2845 | if (c != '(') |
2846 | { | |
2847 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2848 | goto bad; | |
2849 | } | |
2850 | ||
2851 | inner = 1; | |
2852 | while (inner) | |
2853 | { | |
2854 | gfc_gobble_whitespace (); | |
8fc541d3 | 2855 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2856 | if (!ISALPHA (c1)) |
2857 | goto bad; | |
2858 | ||
2859 | gfc_gobble_whitespace (); | |
8fc541d3 | 2860 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2861 | |
2862 | switch (c) | |
2863 | { | |
2864 | case ')': | |
66e4ab31 | 2865 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2866 | |
2867 | case ',': | |
2868 | c2 = c1; | |
2869 | break; | |
2870 | ||
2871 | case '-': | |
2872 | gfc_gobble_whitespace (); | |
8fc541d3 | 2873 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2874 | if (!ISALPHA (c2)) |
2875 | goto bad; | |
2876 | ||
2877 | gfc_gobble_whitespace (); | |
8fc541d3 | 2878 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2879 | |
2880 | if ((c != ',') && (c != ')')) | |
2881 | goto bad; | |
2882 | if (c == ')') | |
2883 | inner = 0; | |
2884 | ||
2885 | break; | |
2886 | ||
2887 | default: | |
2888 | goto bad; | |
2889 | } | |
2890 | ||
2891 | if (c1 > c2) | |
2892 | { | |
2893 | gfc_error ("Letters must be in alphabetic order in " | |
2894 | "IMPLICIT statement at %C"); | |
2895 | goto bad; | |
2896 | } | |
2897 | ||
2898 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
2899 | implicits from this IMPLICIT statement. We do not check for |
2900 | conflicts with whatever earlier IMPLICIT statements may have | |
2901 | set. This is done when we've successfully finished matching | |
2902 | the current one. */ | |
1107b970 | 2903 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
e5ddaa24 TS |
2904 | goto bad; |
2905 | } | |
2906 | ||
2907 | return MATCH_YES; | |
2908 | ||
2909 | bad: | |
2910 | gfc_syntax_error (ST_IMPLICIT); | |
2911 | ||
2912 | gfc_current_locus = cur_loc; | |
2913 | return MATCH_ERROR; | |
2914 | } | |
2915 | ||
2916 | ||
2917 | /* Match an IMPLICIT statement, storing the types for | |
2918 | gfc_set_implicit() if the statement is accepted by the parser. | |
2919 | There is a strange looking, but legal syntactic construction | |
2920 | possible. It looks like: | |
2921 | ||
2922 | IMPLICIT INTEGER (a-b) (c-d) | |
2923 | ||
2924 | This is legal if "a-b" is a constant expression that happens to | |
2925 | equal one of the legal kinds for integers. The real problem | |
2926 | happens with an implicit specification that looks like: | |
2927 | ||
2928 | IMPLICIT INTEGER (a-b) | |
2929 | ||
2930 | In this case, a typespec matcher that is "greedy" (as most of the | |
2931 | matchers are) gobbles the character range as a kindspec, leaving | |
2932 | nothing left. We therefore have to go a bit more slowly in the | |
2933 | matching process by inhibiting the kindspec checking during | |
2934 | typespec matching and checking for a kind later. */ | |
2935 | ||
2936 | match | |
2937 | gfc_match_implicit (void) | |
2938 | { | |
2939 | gfc_typespec ts; | |
2940 | locus cur_loc; | |
8fc541d3 | 2941 | char c; |
e5ddaa24 TS |
2942 | match m; |
2943 | ||
44000dbb JD |
2944 | gfc_clear_ts (&ts); |
2945 | ||
e5ddaa24 TS |
2946 | /* We don't allow empty implicit statements. */ |
2947 | if (gfc_match_eos () == MATCH_YES) | |
2948 | { | |
2949 | gfc_error ("Empty IMPLICIT statement at %C"); | |
2950 | return MATCH_ERROR; | |
2951 | } | |
2952 | ||
e5ddaa24 TS |
2953 | do |
2954 | { | |
1107b970 PB |
2955 | /* First cleanup. */ |
2956 | gfc_clear_new_implicit (); | |
2957 | ||
e5ddaa24 | 2958 | /* A basic type is mandatory here. */ |
e74f1cc8 | 2959 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
2960 | if (m == MATCH_ERROR) |
2961 | goto error; | |
2962 | if (m == MATCH_NO) | |
2963 | goto syntax; | |
2964 | ||
2965 | cur_loc = gfc_current_locus; | |
1107b970 | 2966 | m = match_implicit_range (); |
e5ddaa24 TS |
2967 | |
2968 | if (m == MATCH_YES) | |
2969 | { | |
1107b970 | 2970 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 2971 | gfc_gobble_whitespace (); |
8fc541d3 | 2972 | c = gfc_next_ascii_char (); |
e5ddaa24 | 2973 | if ((c == '\n') || (c == ',')) |
1107b970 PB |
2974 | { |
2975 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 2976 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 2977 | { |
9d64df18 | 2978 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 2979 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
2980 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
2981 | NULL, 1); | |
1107b970 PB |
2982 | } |
2983 | ||
2984 | /* Record the Successful match. */ | |
2985 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
2986 | return MATCH_ERROR; | |
2987 | continue; | |
2988 | } | |
e5ddaa24 TS |
2989 | |
2990 | gfc_current_locus = cur_loc; | |
2991 | } | |
2992 | ||
1107b970 PB |
2993 | /* Discard the (incorrectly) matched range. */ |
2994 | gfc_clear_new_implicit (); | |
2995 | ||
2996 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
2997 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 2998 | m = gfc_match_char_spec (&ts); |
1107b970 | 2999 | else |
e5ddaa24 | 3000 | { |
e2d29968 | 3001 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3002 | if (m == MATCH_NO) |
1107b970 PB |
3003 | { |
3004 | m = gfc_match_old_kind_spec (&ts); | |
3005 | if (m == MATCH_ERROR) | |
3006 | goto error; | |
3007 | if (m == MATCH_NO) | |
3008 | goto syntax; | |
3009 | } | |
e5ddaa24 | 3010 | } |
1107b970 PB |
3011 | if (m == MATCH_ERROR) |
3012 | goto error; | |
e5ddaa24 | 3013 | |
1107b970 | 3014 | m = match_implicit_range (); |
e5ddaa24 TS |
3015 | if (m == MATCH_ERROR) |
3016 | goto error; | |
3017 | if (m == MATCH_NO) | |
3018 | goto syntax; | |
3019 | ||
3020 | gfc_gobble_whitespace (); | |
8fc541d3 | 3021 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3022 | if ((c != '\n') && (c != ',')) |
3023 | goto syntax; | |
3024 | ||
1107b970 PB |
3025 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
3026 | return MATCH_ERROR; | |
e5ddaa24 TS |
3027 | } |
3028 | while (c == ','); | |
3029 | ||
1107b970 | 3030 | return MATCH_YES; |
e5ddaa24 TS |
3031 | |
3032 | syntax: | |
3033 | gfc_syntax_error (ST_IMPLICIT); | |
3034 | ||
3035 | error: | |
3036 | return MATCH_ERROR; | |
3037 | } | |
3038 | ||
66e4ab31 | 3039 | |
8998be20 TB |
3040 | match |
3041 | gfc_match_import (void) | |
3042 | { | |
3043 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3044 | match m; | |
3045 | gfc_symbol *sym; | |
3046 | gfc_symtree *st; | |
3047 | ||
66e4ab31 SK |
3048 | if (gfc_current_ns->proc_name == NULL |
3049 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3050 | { |
3051 | gfc_error ("IMPORT statement at %C only permitted in " | |
3052 | "an INTERFACE body"); | |
3053 | return MATCH_ERROR; | |
3054 | } | |
3055 | ||
636dff67 | 3056 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: IMPORT statement at %C") |
8998be20 TB |
3057 | == FAILURE) |
3058 | return MATCH_ERROR; | |
3059 | ||
3060 | if (gfc_match_eos () == MATCH_YES) | |
3061 | { | |
3062 | /* All host variables should be imported. */ | |
3063 | gfc_current_ns->has_import_set = 1; | |
3064 | return MATCH_YES; | |
3065 | } | |
3066 | ||
3067 | if (gfc_match (" ::") == MATCH_YES) | |
3068 | { | |
3069 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3070 | { |
3071 | gfc_error ("Expecting list of named entities at %C"); | |
3072 | return MATCH_ERROR; | |
3073 | } | |
8998be20 TB |
3074 | } |
3075 | ||
3076 | for(;;) | |
3077 | { | |
2e8d9212 | 3078 | sym = NULL; |
8998be20 TB |
3079 | m = gfc_match (" %n", name); |
3080 | switch (m) | |
3081 | { | |
3082 | case MATCH_YES: | |
36d3fb4c | 3083 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3084 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
3085 | { |
3086 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3087 | return MATCH_ERROR; | |
3088 | } | |
4e2cf5f5 | 3089 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3090 | && gfc_find_symbol (name, |
3091 | gfc_current_ns->proc_name->ns->parent, | |
3092 | 1, &sym)) | |
636dff67 SK |
3093 | { |
3094 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3095 | return MATCH_ERROR; | |
3096 | } | |
3097 | ||
3098 | if (sym == NULL) | |
3099 | { | |
3100 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3101 | "at %C - does not exist.", name); | |
3102 | return MATCH_ERROR; | |
3103 | } | |
3104 | ||
d51347f9 | 3105 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
636dff67 SK |
3106 | { |
3107 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3108 | "at %C.", name); | |
3109 | goto next_item; | |
3110 | } | |
3111 | ||
bc2a4733 | 3112 | st = gfc_new_symtree (&gfc_current_ns->sym_root, sym->name); |
636dff67 SK |
3113 | st->n.sym = sym; |
3114 | sym->refs++; | |
5a8af0b4 | 3115 | sym->attr.imported = 1; |
8998be20 | 3116 | |
c3f34952 TB |
3117 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3118 | { | |
3119 | /* The actual derived type is stored in a symtree with the first | |
3120 | letter of the name captialized; the symtree with the all | |
3121 | lower-case name contains the associated generic function. */ | |
3122 | st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
3123 | gfc_get_string ("%c%s", | |
3124 | (char) TOUPPER ((unsigned char) sym->name[0]), | |
3125 | &sym->name[1])); | |
3126 | st->n.sym = sym; | |
3127 | sym->refs++; | |
3128 | sym->attr.imported = 1; | |
3129 | } | |
3130 | ||
8998be20 TB |
3131 | goto next_item; |
3132 | ||
3133 | case MATCH_NO: | |
3134 | break; | |
3135 | ||
3136 | case MATCH_ERROR: | |
3137 | return MATCH_ERROR; | |
3138 | } | |
3139 | ||
3140 | next_item: | |
3141 | if (gfc_match_eos () == MATCH_YES) | |
3142 | break; | |
3143 | if (gfc_match_char (',') != MATCH_YES) | |
3144 | goto syntax; | |
3145 | } | |
3146 | ||
3147 | return MATCH_YES; | |
3148 | ||
3149 | syntax: | |
3150 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3151 | return MATCH_ERROR; | |
3152 | } | |
e5ddaa24 | 3153 | |
66e4ab31 | 3154 | |
f2449db4 RS |
3155 | /* A minimal implementation of gfc_match without whitespace, escape |
3156 | characters or variable arguments. Returns true if the next | |
3157 | characters match the TARGET template exactly. */ | |
3158 | ||
3159 | static bool | |
3160 | match_string_p (const char *target) | |
3161 | { | |
3162 | const char *p; | |
3163 | ||
3164 | for (p = target; *p; p++) | |
8fc541d3 | 3165 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3166 | return false; |
3167 | return true; | |
3168 | } | |
3169 | ||
6de9cd9a DN |
3170 | /* Matches an attribute specification including array specs. If |
3171 | successful, leaves the variables current_attr and current_as | |
3172 | holding the specification. Also sets the colon_seen variable for | |
3173 | later use by matchers associated with initializations. | |
3174 | ||
3175 | This subroutine is a little tricky in the sense that we don't know | |
3176 | if we really have an attr-spec until we hit the double colon. | |
3177 | Until that time, we can only return MATCH_NO. This forces us to | |
3178 | check for duplicate specification at this level. */ | |
3179 | ||
3180 | static match | |
3181 | match_attr_spec (void) | |
3182 | { | |
6de9cd9a DN |
3183 | /* Modifiers that can exist in a type statement. */ |
3184 | typedef enum | |
3185 | { GFC_DECL_BEGIN = 0, | |
3186 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3187 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3188 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3189 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3190 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3191 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
6de9cd9a DN |
3192 | } |
3193 | decl_types; | |
3194 | ||
3195 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3196 | #define NUM_DECL GFC_DECL_END | |
3197 | ||
6de9cd9a DN |
3198 | locus start, seen_at[NUM_DECL]; |
3199 | int seen[NUM_DECL]; | |
09639a83 | 3200 | unsigned int d; |
6de9cd9a DN |
3201 | const char *attr; |
3202 | match m; | |
17b1d2a0 | 3203 | gfc_try t; |
6de9cd9a DN |
3204 | |
3205 | gfc_clear_attr (¤t_attr); | |
63645982 | 3206 | start = gfc_current_locus; |
6de9cd9a DN |
3207 | |
3208 | current_as = NULL; | |
3209 | colon_seen = 0; | |
3210 | ||
3211 | /* See if we get all of the keywords up to the final double colon. */ | |
3212 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3213 | seen[d] = 0; | |
3214 | ||
3215 | for (;;) | |
3216 | { | |
8fc541d3 | 3217 | char ch; |
a8b3b0b6 | 3218 | |
f2449db4 RS |
3219 | d = DECL_NONE; |
3220 | gfc_gobble_whitespace (); | |
3221 | ||
8fc541d3 | 3222 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3223 | if (ch == ':') |
3224 | { | |
3225 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3226 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3227 | break; |
3228 | } | |
3229 | else if (ch == ',') | |
a8b3b0b6 | 3230 | { |
a8b3b0b6 | 3231 | gfc_gobble_whitespace (); |
8fc541d3 | 3232 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3233 | { |
f2449db4 | 3234 | case 'a': |
1eee5628 TB |
3235 | gfc_next_ascii_char (); |
3236 | switch (gfc_next_ascii_char ()) | |
3237 | { | |
3238 | case 'l': | |
3239 | if (match_string_p ("locatable")) | |
3240 | { | |
3241 | /* Matched "allocatable". */ | |
3242 | d = DECL_ALLOCATABLE; | |
3243 | } | |
3244 | break; | |
3245 | ||
3246 | case 's': | |
3247 | if (match_string_p ("ynchronous")) | |
3248 | { | |
3249 | /* Matched "asynchronous". */ | |
3250 | d = DECL_ASYNCHRONOUS; | |
3251 | } | |
3252 | break; | |
3253 | } | |
fe4e525c | 3254 | break; |
f2449db4 RS |
3255 | |
3256 | case 'b': | |
a8b3b0b6 | 3257 | /* Try and match the bind(c). */ |
1eabf70a | 3258 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3259 | if (m == MATCH_YES) |
a8b3b0b6 | 3260 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3261 | else if (m == MATCH_ERROR) |
3262 | goto cleanup; | |
f2449db4 RS |
3263 | break; |
3264 | ||
be59db2d | 3265 | case 'c': |
fe4e525c TB |
3266 | gfc_next_ascii_char (); |
3267 | if ('o' != gfc_next_ascii_char ()) | |
3268 | break; | |
3269 | switch (gfc_next_ascii_char ()) | |
3270 | { | |
3271 | case 'd': | |
3272 | if (match_string_p ("imension")) | |
3273 | { | |
3274 | d = DECL_CODIMENSION; | |
3275 | break; | |
3276 | } | |
3277 | case 'n': | |
3278 | if (match_string_p ("tiguous")) | |
3279 | { | |
3280 | d = DECL_CONTIGUOUS; | |
3281 | break; | |
3282 | } | |
3283 | } | |
be59db2d TB |
3284 | break; |
3285 | ||
f2449db4 RS |
3286 | case 'd': |
3287 | if (match_string_p ("dimension")) | |
3288 | d = DECL_DIMENSION; | |
3289 | break; | |
3290 | ||
3291 | case 'e': | |
3292 | if (match_string_p ("external")) | |
3293 | d = DECL_EXTERNAL; | |
3294 | break; | |
3295 | ||
3296 | case 'i': | |
3297 | if (match_string_p ("int")) | |
3298 | { | |
8fc541d3 | 3299 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3300 | if (ch == 'e') |
3301 | { | |
3302 | if (match_string_p ("nt")) | |
3303 | { | |
3304 | /* Matched "intent". */ | |
3305 | /* TODO: Call match_intent_spec from here. */ | |
3306 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3307 | d = DECL_INOUT; | |
3308 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3309 | d = DECL_IN; | |
3310 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3311 | d = DECL_OUT; | |
3312 | } | |
3313 | } | |
3314 | else if (ch == 'r') | |
3315 | { | |
3316 | if (match_string_p ("insic")) | |
3317 | { | |
3318 | /* Matched "intrinsic". */ | |
3319 | d = DECL_INTRINSIC; | |
3320 | } | |
3321 | } | |
3322 | } | |
3323 | break; | |
3324 | ||
3325 | case 'o': | |
3326 | if (match_string_p ("optional")) | |
3327 | d = DECL_OPTIONAL; | |
3328 | break; | |
3329 | ||
3330 | case 'p': | |
8fc541d3 FXC |
3331 | gfc_next_ascii_char (); |
3332 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3333 | { |
3334 | case 'a': | |
3335 | if (match_string_p ("rameter")) | |
3336 | { | |
3337 | /* Matched "parameter". */ | |
3338 | d = DECL_PARAMETER; | |
3339 | } | |
3340 | break; | |
3341 | ||
3342 | case 'o': | |
3343 | if (match_string_p ("inter")) | |
3344 | { | |
3345 | /* Matched "pointer". */ | |
3346 | d = DECL_POINTER; | |
3347 | } | |
3348 | break; | |
3349 | ||
3350 | case 'r': | |
8fc541d3 | 3351 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3352 | if (ch == 'i') |
3353 | { | |
3354 | if (match_string_p ("vate")) | |
3355 | { | |
3356 | /* Matched "private". */ | |
3357 | d = DECL_PRIVATE; | |
3358 | } | |
3359 | } | |
3360 | else if (ch == 'o') | |
3361 | { | |
3362 | if (match_string_p ("tected")) | |
3363 | { | |
3364 | /* Matched "protected". */ | |
3365 | d = DECL_PROTECTED; | |
3366 | } | |
3367 | } | |
3368 | break; | |
3369 | ||
3370 | case 'u': | |
3371 | if (match_string_p ("blic")) | |
3372 | { | |
3373 | /* Matched "public". */ | |
3374 | d = DECL_PUBLIC; | |
3375 | } | |
3376 | break; | |
3377 | } | |
3378 | break; | |
3379 | ||
3380 | case 's': | |
3381 | if (match_string_p ("save")) | |
3382 | d = DECL_SAVE; | |
3383 | break; | |
3384 | ||
3385 | case 't': | |
3386 | if (match_string_p ("target")) | |
3387 | d = DECL_TARGET; | |
3388 | break; | |
3389 | ||
3390 | case 'v': | |
8fc541d3 FXC |
3391 | gfc_next_ascii_char (); |
3392 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3393 | if (ch == 'a') |
3394 | { | |
3395 | if (match_string_p ("lue")) | |
3396 | { | |
3397 | /* Matched "value". */ | |
3398 | d = DECL_VALUE; | |
3399 | } | |
3400 | } | |
3401 | else if (ch == 'o') | |
3402 | { | |
3403 | if (match_string_p ("latile")) | |
3404 | { | |
3405 | /* Matched "volatile". */ | |
3406 | d = DECL_VOLATILE; | |
3407 | } | |
3408 | } | |
3409 | break; | |
a8b3b0b6 CR |
3410 | } |
3411 | } | |
d468bcdb | 3412 | |
f2449db4 RS |
3413 | /* No double colon and no recognizable decl_type, so assume that |
3414 | we've been looking at something else the whole time. */ | |
3415 | if (d == DECL_NONE) | |
3416 | { | |
3417 | m = MATCH_NO; | |
3418 | goto cleanup; | |
3419 | } | |
d51347f9 | 3420 | |
acb388a0 JD |
3421 | /* Check to make sure any parens are paired up correctly. */ |
3422 | if (gfc_match_parens () == MATCH_ERROR) | |
3423 | { | |
3424 | m = MATCH_ERROR; | |
3425 | goto cleanup; | |
3426 | } | |
3427 | ||
6de9cd9a | 3428 | seen[d]++; |
63645982 | 3429 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3430 | |
d3a9eea2 | 3431 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3432 | { |
d3a9eea2 | 3433 | gfc_array_spec *as = NULL; |
6de9cd9a | 3434 | |
d3a9eea2 TB |
3435 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3436 | d == DECL_CODIMENSION); | |
3437 | ||
3438 | if (current_as == NULL) | |
3439 | current_as = as; | |
3440 | else if (m == MATCH_YES) | |
6de9cd9a | 3441 | { |
d3a9eea2 | 3442 | merge_array_spec (as, current_as, false); |
cede9502 | 3443 | free (as); |
6de9cd9a DN |
3444 | } |
3445 | ||
be59db2d TB |
3446 | if (m == MATCH_NO) |
3447 | { | |
d3a9eea2 TB |
3448 | if (d == DECL_CODIMENSION) |
3449 | gfc_error ("Missing codimension specification at %C"); | |
3450 | else | |
3451 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3452 | m = MATCH_ERROR; |
3453 | } | |
3454 | ||
3455 | if (m == MATCH_ERROR) | |
3456 | goto cleanup; | |
3457 | } | |
6de9cd9a DN |
3458 | } |
3459 | ||
6de9cd9a DN |
3460 | /* Since we've seen a double colon, we have to be looking at an |
3461 | attr-spec. This means that we can now issue errors. */ | |
3462 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3463 | if (seen[d] > 1) | |
3464 | { | |
3465 | switch (d) | |
3466 | { | |
3467 | case DECL_ALLOCATABLE: | |
3468 | attr = "ALLOCATABLE"; | |
3469 | break; | |
1eee5628 TB |
3470 | case DECL_ASYNCHRONOUS: |
3471 | attr = "ASYNCHRONOUS"; | |
3472 | break; | |
be59db2d TB |
3473 | case DECL_CODIMENSION: |
3474 | attr = "CODIMENSION"; | |
3475 | break; | |
fe4e525c TB |
3476 | case DECL_CONTIGUOUS: |
3477 | attr = "CONTIGUOUS"; | |
3478 | break; | |
6de9cd9a DN |
3479 | case DECL_DIMENSION: |
3480 | attr = "DIMENSION"; | |
3481 | break; | |
3482 | case DECL_EXTERNAL: | |
3483 | attr = "EXTERNAL"; | |
3484 | break; | |
3485 | case DECL_IN: | |
3486 | attr = "INTENT (IN)"; | |
3487 | break; | |
3488 | case DECL_OUT: | |
3489 | attr = "INTENT (OUT)"; | |
3490 | break; | |
3491 | case DECL_INOUT: | |
3492 | attr = "INTENT (IN OUT)"; | |
3493 | break; | |
3494 | case DECL_INTRINSIC: | |
3495 | attr = "INTRINSIC"; | |
3496 | break; | |
3497 | case DECL_OPTIONAL: | |
3498 | attr = "OPTIONAL"; | |
3499 | break; | |
3500 | case DECL_PARAMETER: | |
3501 | attr = "PARAMETER"; | |
3502 | break; | |
3503 | case DECL_POINTER: | |
3504 | attr = "POINTER"; | |
3505 | break; | |
ee7e677f TB |
3506 | case DECL_PROTECTED: |
3507 | attr = "PROTECTED"; | |
3508 | break; | |
6de9cd9a DN |
3509 | case DECL_PRIVATE: |
3510 | attr = "PRIVATE"; | |
3511 | break; | |
3512 | case DECL_PUBLIC: | |
3513 | attr = "PUBLIC"; | |
3514 | break; | |
3515 | case DECL_SAVE: | |
3516 | attr = "SAVE"; | |
3517 | break; | |
3518 | case DECL_TARGET: | |
3519 | attr = "TARGET"; | |
3520 | break; | |
a8b3b0b6 CR |
3521 | case DECL_IS_BIND_C: |
3522 | attr = "IS_BIND_C"; | |
3523 | break; | |
3524 | case DECL_VALUE: | |
3525 | attr = "VALUE"; | |
3526 | break; | |
775e6c3a TB |
3527 | case DECL_VOLATILE: |
3528 | attr = "VOLATILE"; | |
3529 | break; | |
6de9cd9a | 3530 | default: |
66e4ab31 | 3531 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3532 | } |
3533 | ||
3534 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3535 | m = MATCH_ERROR; | |
3536 | goto cleanup; | |
3537 | } | |
3538 | ||
3539 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3540 | to the current attribute. */ | |
3541 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3542 | { | |
3543 | if (seen[d] == 0) | |
3544 | continue; | |
3545 | ||
3546 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3547 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3548 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3549 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3550 | { |
5046aff5 PT |
3551 | if (d == DECL_ALLOCATABLE) |
3552 | { | |
636dff67 SK |
3553 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ALLOCATABLE " |
3554 | "attribute at %C in a TYPE definition") | |
d51347f9 | 3555 | == FAILURE) |
5046aff5 PT |
3556 | { |
3557 | m = MATCH_ERROR; | |
3558 | goto cleanup; | |
3559 | } | |
636dff67 SK |
3560 | } |
3561 | else | |
5046aff5 PT |
3562 | { |
3563 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3564 | &seen_at[d]); |
5046aff5 PT |
3565 | m = MATCH_ERROR; |
3566 | goto cleanup; | |
3567 | } | |
6de9cd9a DN |
3568 | } |
3569 | ||
4213f93b | 3570 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3571 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3572 | { |
3573 | if (d == DECL_PRIVATE) | |
3574 | attr = "PRIVATE"; | |
3575 | else | |
3576 | attr = "PUBLIC"; | |
d51347f9 TB |
3577 | if (gfc_current_state () == COMP_DERIVED |
3578 | && gfc_state_stack->previous | |
3579 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3580 | { | |
3581 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Attribute %s " | |
3582 | "at %L in a TYPE definition", attr, | |
3583 | &seen_at[d]) | |
3584 | == FAILURE) | |
3585 | { | |
3586 | m = MATCH_ERROR; | |
3587 | goto cleanup; | |
3588 | } | |
3589 | } | |
3590 | else | |
3591 | { | |
3592 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3593 | "specification part of a module", attr, &seen_at[d]); | |
3594 | m = MATCH_ERROR; | |
3595 | goto cleanup; | |
3596 | } | |
4213f93b PT |
3597 | } |
3598 | ||
6de9cd9a DN |
3599 | switch (d) |
3600 | { | |
3601 | case DECL_ALLOCATABLE: | |
3602 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3603 | break; | |
3604 | ||
1eee5628 TB |
3605 | case DECL_ASYNCHRONOUS: |
3606 | if (gfc_notify_std (GFC_STD_F2003, | |
3607 | "Fortran 2003: ASYNCHRONOUS attribute at %C") | |
3608 | == FAILURE) | |
3609 | t = FAILURE; | |
3610 | else | |
3611 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3612 | break; | |
3613 | ||
be59db2d TB |
3614 | case DECL_CODIMENSION: |
3615 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3616 | break; | |
3617 | ||
fe4e525c TB |
3618 | case DECL_CONTIGUOUS: |
3619 | if (gfc_notify_std (GFC_STD_F2008, | |
3620 | "Fortran 2008: CONTIGUOUS attribute at %C") | |
3621 | == FAILURE) | |
3622 | t = FAILURE; | |
3623 | else | |
3624 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3625 | break; | |
3626 | ||
6de9cd9a | 3627 | case DECL_DIMENSION: |
231b2fcc | 3628 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3629 | break; |
3630 | ||
3631 | case DECL_EXTERNAL: | |
3632 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3633 | break; | |
3634 | ||
3635 | case DECL_IN: | |
3636 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3637 | break; | |
3638 | ||
3639 | case DECL_OUT: | |
3640 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3641 | break; | |
3642 | ||
3643 | case DECL_INOUT: | |
3644 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3645 | break; | |
3646 | ||
3647 | case DECL_INTRINSIC: | |
3648 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3649 | break; | |
3650 | ||
3651 | case DECL_OPTIONAL: | |
3652 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3653 | break; | |
3654 | ||
3655 | case DECL_PARAMETER: | |
231b2fcc | 3656 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3657 | break; |
3658 | ||
3659 | case DECL_POINTER: | |
3660 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3661 | break; | |
3662 | ||
ee7e677f TB |
3663 | case DECL_PROTECTED: |
3664 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3665 | { | |
3666 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3667 | "part of a module"); | |
3668 | t = FAILURE; | |
3669 | break; | |
3670 | } | |
3671 | ||
636dff67 SK |
3672 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED " |
3673 | "attribute at %C") | |
ee7e677f TB |
3674 | == FAILURE) |
3675 | t = FAILURE; | |
3676 | else | |
3677 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3678 | break; | |
3679 | ||
6de9cd9a | 3680 | case DECL_PRIVATE: |
231b2fcc TS |
3681 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3682 | &seen_at[d]); | |
6de9cd9a DN |
3683 | break; |
3684 | ||
3685 | case DECL_PUBLIC: | |
231b2fcc TS |
3686 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3687 | &seen_at[d]); | |
6de9cd9a DN |
3688 | break; |
3689 | ||
3690 | case DECL_SAVE: | |
80f95228 | 3691 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3692 | break; |
3693 | ||
3694 | case DECL_TARGET: | |
3695 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3696 | break; | |
3697 | ||
a8b3b0b6 CR |
3698 | case DECL_IS_BIND_C: |
3699 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3700 | break; | |
3701 | ||
06469efd | 3702 | case DECL_VALUE: |
636dff67 SK |
3703 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE attribute " |
3704 | "at %C") | |
06469efd PT |
3705 | == FAILURE) |
3706 | t = FAILURE; | |
3707 | else | |
3708 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3709 | break; | |
3710 | ||
775e6c3a TB |
3711 | case DECL_VOLATILE: |
3712 | if (gfc_notify_std (GFC_STD_F2003, | |
636dff67 | 3713 | "Fortran 2003: VOLATILE attribute at %C") |
775e6c3a TB |
3714 | == FAILURE) |
3715 | t = FAILURE; | |
3716 | else | |
3717 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3718 | break; | |
3719 | ||
6de9cd9a DN |
3720 | default: |
3721 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3722 | } | |
3723 | ||
3724 | if (t == FAILURE) | |
3725 | { | |
3726 | m = MATCH_ERROR; | |
3727 | goto cleanup; | |
3728 | } | |
3729 | } | |
3730 | ||
80f95228 JW |
3731 | /* Module variables implicitly have the SAVE attribute. */ |
3732 | if (gfc_current_state () == COMP_MODULE && !current_attr.save) | |
3733 | current_attr.save = SAVE_IMPLICIT; | |
3734 | ||
6de9cd9a DN |
3735 | colon_seen = 1; |
3736 | return MATCH_YES; | |
3737 | ||
3738 | cleanup: | |
63645982 | 3739 | gfc_current_locus = start; |
6de9cd9a DN |
3740 | gfc_free_array_spec (current_as); |
3741 | current_as = NULL; | |
3742 | return m; | |
3743 | } | |
3744 | ||
3745 | ||
a8b3b0b6 CR |
3746 | /* Set the binding label, dest_label, either with the binding label |
3747 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3748 | will be the symbol name in all lower case, as required by the draft | |
3749 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3750 | there is more than one argument (num_idents), it is an error. */ | |
3751 | ||
17b1d2a0 | 3752 | gfc_try |
a8b3b0b6 CR |
3753 | set_binding_label (char *dest_label, const char *sym_name, int num_idents) |
3754 | { | |
ad4a2f64 | 3755 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 3756 | { |
ad4a2f64 TB |
3757 | gfc_error ("Multiple identifiers provided with " |
3758 | "single NAME= specifier at %C"); | |
3759 | return FAILURE; | |
3760 | } | |
a8b3b0b6 | 3761 | |
ad4a2f64 TB |
3762 | if (curr_binding_label[0] != '\0') |
3763 | { | |
a8b3b0b6 | 3764 | /* Binding label given; store in temp holder til have sym. */ |
c5b5a17a | 3765 | strcpy (dest_label, curr_binding_label); |
a8b3b0b6 CR |
3766 | } |
3767 | else | |
3768 | { | |
3769 | /* No binding label given, and the NAME= specifier did not exist, | |
3770 | which means there was no NAME="". */ | |
3771 | if (sym_name != NULL && has_name_equals == 0) | |
c5b5a17a | 3772 | strcpy (dest_label, sym_name); |
a8b3b0b6 CR |
3773 | } |
3774 | ||
3775 | return SUCCESS; | |
3776 | } | |
3777 | ||
3778 | ||
3779 | /* Set the status of the given common block as being BIND(C) or not, | |
3780 | depending on the given parameter, is_bind_c. */ | |
3781 | ||
3782 | void | |
3783 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3784 | { | |
3785 | com_block->is_bind_c = is_bind_c; | |
3786 | return; | |
3787 | } | |
3788 | ||
3789 | ||
3790 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3791 | ||
17b1d2a0 | 3792 | gfc_try |
00820a2a | 3793 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 3794 | { |
bc21d315 | 3795 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 TB |
3796 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
3797 | ? SUCCESS : FAILURE; | |
00820a2a JW |
3798 | else if (ts->type == BT_CLASS) |
3799 | return FAILURE; | |
a8b3b0b6 CR |
3800 | else if (ts->is_c_interop != 1) |
3801 | return FAILURE; | |
3802 | ||
3803 | return SUCCESS; | |
3804 | } | |
3805 | ||
3806 | ||
3807 | /* Verify that the variables of a given common block, which has been | |
3808 | defined with the attribute specifier bind(c), to be of a C | |
3809 | interoperable type. Errors will be reported here, if | |
3810 | encountered. */ | |
3811 | ||
17b1d2a0 | 3812 | gfc_try |
a8b3b0b6 CR |
3813 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3814 | { | |
3815 | gfc_symbol *curr_sym = NULL; | |
17b1d2a0 | 3816 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3817 | |
3818 | curr_sym = com_block->head; | |
3819 | ||
3820 | /* Make sure we have at least one symbol. */ | |
3821 | if (curr_sym == NULL) | |
3822 | return retval; | |
3823 | ||
3824 | /* Here we know we have a symbol, so we'll execute this loop | |
3825 | at least once. */ | |
3826 | do | |
3827 | { | |
3828 | /* The second to last param, 1, says this is in a common block. */ | |
3829 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3830 | curr_sym = curr_sym->common_next; | |
3831 | } while (curr_sym != NULL); | |
3832 | ||
3833 | return retval; | |
3834 | } | |
3835 | ||
3836 | ||
3837 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3838 | an appropriate error message is reported. */ | |
3839 | ||
17b1d2a0 | 3840 | gfc_try |
a8b3b0b6 CR |
3841 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3842 | int is_in_common, gfc_common_head *com_block) | |
3843 | { | |
8327f9c2 | 3844 | bool bind_c_function = false; |
17b1d2a0 | 3845 | gfc_try retval = SUCCESS; |
d8fa96e0 | 3846 | |
8327f9c2 TB |
3847 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3848 | bind_c_function = true; | |
3849 | ||
d8fa96e0 CR |
3850 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3851 | { | |
3852 | tmp_sym = tmp_sym->result; | |
3853 | /* Make sure it wasn't an implicitly typed result. */ | |
3854 | if (tmp_sym->attr.implicit_type) | |
3855 | { | |
3856 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3857 | "%L may not be C interoperable", tmp_sym->name, | |
3858 | &tmp_sym->declared_at); | |
3859 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3860 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3861 | tmp_sym->ts.is_c_interop = 1; | |
3862 | tmp_sym->attr.is_c_interop = 1; | |
3863 | } | |
3864 | } | |
8327f9c2 | 3865 | |
a8b3b0b6 CR |
3866 | /* Here, we know we have the bind(c) attribute, so if we have |
3867 | enough type info, then verify that it's a C interop kind. | |
3868 | The info could be in the symbol already, or possibly still in | |
3869 | the given ts (current_ts), so look in both. */ | |
3870 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
3871 | { | |
00820a2a | 3872 | if (gfc_verify_c_interop (&(tmp_sym->ts)) != SUCCESS) |
a8b3b0b6 CR |
3873 | { |
3874 | /* See if we're dealing with a sym in a common block or not. */ | |
3875 | if (is_in_common == 1) | |
3876 | { | |
3877 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3878 | "may not be a C interoperable " | |
3879 | "kind though common block '%s' is BIND(C)", | |
3880 | tmp_sym->name, com_block->name, | |
3881 | &(tmp_sym->declared_at), com_block->name); | |
3882 | } | |
3883 | else | |
3884 | { | |
3885 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3886 | gfc_error ("Type declaration '%s' at %L is not C " | |
3887 | "interoperable but it is BIND(C)", | |
3888 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3889 | else | |
3890 | gfc_warning ("Variable '%s' at %L " | |
3891 | "may not be a C interoperable " | |
3892 | "kind but it is bind(c)", | |
3893 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3894 | } | |
3895 | } | |
3896 | ||
3897 | /* Variables declared w/in a common block can't be bind(c) | |
3898 | since there's no way for C to see these variables, so there's | |
3899 | semantically no reason for the attribute. */ | |
3900 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
3901 | { | |
3902 | gfc_error ("Variable '%s' in common block '%s' at " | |
3903 | "%L cannot be declared with BIND(C) " | |
3904 | "since it is not a global", | |
3905 | tmp_sym->name, com_block->name, | |
3906 | &(tmp_sym->declared_at)); | |
3907 | retval = FAILURE; | |
3908 | } | |
3909 | ||
3910 | /* Scalar variables that are bind(c) can not have the pointer | |
3911 | or allocatable attributes. */ | |
3912 | if (tmp_sym->attr.is_bind_c == 1) | |
3913 | { | |
3914 | if (tmp_sym->attr.pointer == 1) | |
3915 | { | |
3916 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3917 | "POINTER and BIND(C) attributes", | |
3918 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3919 | retval = FAILURE; | |
3920 | } | |
3921 | ||
3922 | if (tmp_sym->attr.allocatable == 1) | |
3923 | { | |
3924 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3925 | "ALLOCATABLE and BIND(C) attributes", | |
3926 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3927 | retval = FAILURE; | |
3928 | } | |
3929 | ||
8327f9c2 TB |
3930 | } |
3931 | ||
3932 | /* If it is a BIND(C) function, make sure the return value is a | |
3933 | scalar value. The previous tests in this function made sure | |
3934 | the type is interoperable. */ | |
3935 | if (bind_c_function && tmp_sym->as != NULL) | |
3936 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
3937 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
3938 | ||
3939 | /* BIND(C) functions can not return a character string. */ | |
3940 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
3941 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
3942 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
3943 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
8327f9c2 | 3944 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
a8b3b0b6 CR |
3945 | "be a character string", tmp_sym->name, |
3946 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
3947 | } |
3948 | ||
3949 | /* See if the symbol has been marked as private. If it has, make sure | |
3950 | there is no binding label and warn the user if there is one. */ | |
3951 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
3952 | && tmp_sym->binding_label[0] != '\0') | |
3953 | /* Use gfc_warning_now because we won't say that the symbol fails | |
3954 | just because of this. */ | |
3955 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
3956 | "given the binding label '%s'", tmp_sym->name, | |
3957 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
3958 | ||
3959 | return retval; | |
3960 | } | |
3961 | ||
3962 | ||
3963 | /* Set the appropriate fields for a symbol that's been declared as | |
3964 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
3965 | the type is C interoperable. Errors are reported by the functions | |
3966 | used to set/test these fields. */ | |
3967 | ||
17b1d2a0 | 3968 | gfc_try |
a8b3b0b6 CR |
3969 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
3970 | { | |
17b1d2a0 | 3971 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3972 | |
3973 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
3974 | ||
3975 | /* Set the is_bind_c bit in symbol_attribute. */ | |
3976 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
3977 | ||
3978 | if (set_binding_label (tmp_sym->binding_label, tmp_sym->name, | |
3979 | num_idents) != SUCCESS) | |
3980 | return FAILURE; | |
3981 | ||
3982 | return retval; | |
3983 | } | |
3984 | ||
3985 | ||
3986 | /* Set the fields marking the given common block as BIND(C), including | |
3987 | a binding label, and report any errors encountered. */ | |
3988 | ||
17b1d2a0 | 3989 | gfc_try |
a8b3b0b6 CR |
3990 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
3991 | { | |
17b1d2a0 | 3992 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3993 | |
3994 | /* destLabel, common name, typespec (which may have binding label). */ | |
3995 | if (set_binding_label (com_block->binding_label, com_block->name, num_idents) | |
3996 | != SUCCESS) | |
3997 | return FAILURE; | |
3998 | ||
3999 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4000 | set_com_block_bind_c (com_block, 1); | |
4001 | ||
4002 | return retval; | |
4003 | } | |
4004 | ||
4005 | ||
4006 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4007 | attribute applies to. */ | |
4008 | ||
17b1d2a0 | 4009 | gfc_try |
a8b3b0b6 CR |
4010 | get_bind_c_idents (void) |
4011 | { | |
4012 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4013 | int num_idents = 0; | |
4014 | gfc_symbol *tmp_sym = NULL; | |
4015 | match found_id; | |
4016 | gfc_common_head *com_block = NULL; | |
4017 | ||
4018 | if (gfc_match_name (name) == MATCH_YES) | |
4019 | { | |
4020 | found_id = MATCH_YES; | |
4021 | gfc_get_ha_symbol (name, &tmp_sym); | |
4022 | } | |
4023 | else if (match_common_name (name) == MATCH_YES) | |
4024 | { | |
4025 | found_id = MATCH_YES; | |
4026 | com_block = gfc_get_common (name, 0); | |
4027 | } | |
4028 | else | |
4029 | { | |
4030 | gfc_error ("Need either entity or common block name for " | |
4031 | "attribute specification statement at %C"); | |
4032 | return FAILURE; | |
4033 | } | |
4034 | ||
4035 | /* Save the current identifier and look for more. */ | |
4036 | do | |
4037 | { | |
4038 | /* Increment the number of identifiers found for this spec stmt. */ | |
4039 | num_idents++; | |
4040 | ||
4041 | /* Make sure we have a sym or com block, and verify that it can | |
4042 | be bind(c). Set the appropriate field(s) and look for more | |
4043 | identifiers. */ | |
4044 | if (tmp_sym != NULL || com_block != NULL) | |
4045 | { | |
4046 | if (tmp_sym != NULL) | |
4047 | { | |
4048 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
4049 | != SUCCESS) | |
4050 | return FAILURE; | |
4051 | } | |
4052 | else | |
4053 | { | |
4054 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
4055 | != SUCCESS) | |
4056 | return FAILURE; | |
4057 | } | |
4058 | ||
4059 | /* Look to see if we have another identifier. */ | |
4060 | tmp_sym = NULL; | |
4061 | if (gfc_match_eos () == MATCH_YES) | |
4062 | found_id = MATCH_NO; | |
4063 | else if (gfc_match_char (',') != MATCH_YES) | |
4064 | found_id = MATCH_NO; | |
4065 | else if (gfc_match_name (name) == MATCH_YES) | |
4066 | { | |
4067 | found_id = MATCH_YES; | |
4068 | gfc_get_ha_symbol (name, &tmp_sym); | |
4069 | } | |
4070 | else if (match_common_name (name) == MATCH_YES) | |
4071 | { | |
4072 | found_id = MATCH_YES; | |
4073 | com_block = gfc_get_common (name, 0); | |
4074 | } | |
4075 | else | |
4076 | { | |
4077 | gfc_error ("Missing entity or common block name for " | |
4078 | "attribute specification statement at %C"); | |
4079 | return FAILURE; | |
4080 | } | |
4081 | } | |
4082 | else | |
4083 | { | |
4084 | gfc_internal_error ("Missing symbol"); | |
4085 | } | |
4086 | } while (found_id == MATCH_YES); | |
4087 | ||
4088 | /* if we get here we were successful */ | |
4089 | return SUCCESS; | |
4090 | } | |
4091 | ||
4092 | ||
4093 | /* Try and match a BIND(C) attribute specification statement. */ | |
4094 | ||
4095 | match | |
4096 | gfc_match_bind_c_stmt (void) | |
4097 | { | |
4098 | match found_match = MATCH_NO; | |
4099 | gfc_typespec *ts; | |
4100 | ||
4101 | ts = ¤t_ts; | |
4102 | ||
4103 | /* This may not be necessary. */ | |
4104 | gfc_clear_ts (ts); | |
4105 | /* Clear the temporary binding label holder. */ | |
4106 | curr_binding_label[0] = '\0'; | |
4107 | ||
4108 | /* Look for the bind(c). */ | |
1eabf70a | 4109 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4110 | |
4111 | if (found_match == MATCH_YES) | |
4112 | { | |
4113 | /* Look for the :: now, but it is not required. */ | |
4114 | gfc_match (" :: "); | |
4115 | ||
4116 | /* Get the identifier(s) that needs to be updated. This may need to | |
4117 | change to hand the flag(s) for the attr specified so all identifiers | |
4118 | found can have all appropriate parts updated (assuming that the same | |
4119 | spec stmt can have multiple attrs, such as both bind(c) and | |
4120 | allocatable...). */ | |
4121 | if (get_bind_c_idents () != SUCCESS) | |
4122 | /* Error message should have printed already. */ | |
4123 | return MATCH_ERROR; | |
4124 | } | |
4125 | ||
4126 | return found_match; | |
4127 | } | |
4128 | ||
4129 | ||
6de9cd9a DN |
4130 | /* Match a data declaration statement. */ |
4131 | ||
4132 | match | |
4133 | gfc_match_data_decl (void) | |
4134 | { | |
4135 | gfc_symbol *sym; | |
4136 | match m; | |
949d5b72 | 4137 | int elem; |
6de9cd9a | 4138 | |
a8b3b0b6 CR |
4139 | num_idents_on_line = 0; |
4140 | ||
e74f1cc8 | 4141 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4142 | if (m != MATCH_YES) |
4143 | return m; | |
4144 | ||
2e23972e JW |
4145 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4146 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4147 | { |
bc21d315 | 4148 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4149 | |
4150 | if (sym == NULL) | |
4151 | { | |
4152 | m = MATCH_ERROR; | |
4153 | goto cleanup; | |
4154 | } | |
4155 | ||
bc21d315 | 4156 | current_ts.u.derived = sym; |
6de9cd9a DN |
4157 | } |
4158 | ||
4159 | m = match_attr_spec (); | |
4160 | if (m == MATCH_ERROR) | |
4161 | { | |
4162 | m = MATCH_NO; | |
4163 | goto cleanup; | |
4164 | } | |
4165 | ||
2e23972e JW |
4166 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4167 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4168 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4169 | { |
4170 | ||
4171 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4172 | goto ok; | |
4173 | ||
bc21d315 JW |
4174 | gfc_find_symbol (current_ts.u.derived->name, |
4175 | current_ts.u.derived->ns->parent, 1, &sym); | |
6de9cd9a | 4176 | |
976e21f6 | 4177 | /* Any symbol that we find had better be a type definition |
636dff67 | 4178 | which has its components defined. */ |
976e21f6 | 4179 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4180 | && (current_ts.u.derived->components != NULL |
4181 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4182 | goto ok; |
4183 | ||
976e21f6 PT |
4184 | /* Now we have an error, which we signal, and then fix up |
4185 | because the knock-on is plain and simple confusing. */ | |
4186 | gfc_error_now ("Derived type at %C has not been previously defined " | |
636dff67 | 4187 | "and so cannot appear in a derived type definition"); |
976e21f6 PT |
4188 | current_attr.pointer = 1; |
4189 | goto ok; | |
6de9cd9a DN |
4190 | } |
4191 | ||
4192 | ok: | |
4193 | /* If we have an old-style character declaration, and no new-style | |
4194 | attribute specifications, then there a comma is optional between | |
4195 | the type specification and the variable list. */ | |
4196 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4197 | gfc_match_char (','); | |
4198 | ||
949d5b72 PT |
4199 | /* Give the types/attributes to symbols that follow. Give the element |
4200 | a number so that repeat character length expressions can be copied. */ | |
4201 | elem = 1; | |
6de9cd9a DN |
4202 | for (;;) |
4203 | { | |
a8b3b0b6 | 4204 | num_idents_on_line++; |
949d5b72 | 4205 | m = variable_decl (elem++); |
6de9cd9a DN |
4206 | if (m == MATCH_ERROR) |
4207 | goto cleanup; | |
4208 | if (m == MATCH_NO) | |
4209 | break; | |
4210 | ||
4211 | if (gfc_match_eos () == MATCH_YES) | |
4212 | goto cleanup; | |
4213 | if (gfc_match_char (',') != MATCH_YES) | |
4214 | break; | |
4215 | } | |
4216 | ||
8f81c3c6 PT |
4217 | if (gfc_error_flag_test () == 0) |
4218 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
4219 | m = MATCH_ERROR; |
4220 | ||
a9f6f1f2 JD |
4221 | gfc_free_data_all (gfc_current_ns); |
4222 | ||
6de9cd9a DN |
4223 | cleanup: |
4224 | gfc_free_array_spec (current_as); | |
4225 | current_as = NULL; | |
4226 | return m; | |
4227 | } | |
4228 | ||
4229 | ||
4230 | /* Match a prefix associated with a function or subroutine | |
4231 | declaration. If the typespec pointer is nonnull, then a typespec | |
4232 | can be matched. Note that if nothing matches, MATCH_YES is | |
4233 | returned (the null string was matched). */ | |
4234 | ||
1c8bcdf7 PT |
4235 | match |
4236 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4237 | { |
7389bce6 | 4238 | bool seen_type; |
e6c14898 DK |
4239 | bool seen_impure; |
4240 | bool found_prefix; | |
6de9cd9a DN |
4241 | |
4242 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4243 | seen_type = false; |
4244 | seen_impure = false; | |
6de9cd9a | 4245 | |
3df684e2 DK |
4246 | gcc_assert (!gfc_matching_prefix); |
4247 | gfc_matching_prefix = true; | |
f37e928c | 4248 | |
e6c14898 | 4249 | do |
6de9cd9a | 4250 | { |
e6c14898 | 4251 | found_prefix = false; |
6de9cd9a | 4252 | |
e6c14898 DK |
4253 | if (!seen_type && ts != NULL |
4254 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4255 | && gfc_match_space () == MATCH_YES) | |
4256 | { | |
6de9cd9a | 4257 | |
e6c14898 DK |
4258 | seen_type = true; |
4259 | found_prefix = true; | |
4260 | } | |
4261 | ||
4262 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4263 | { | |
4264 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
4265 | goto error; | |
4266 | ||
4267 | found_prefix = true; | |
4268 | } | |
4269 | ||
4270 | if (gfc_match ("pure% ") == MATCH_YES) | |
4271 | { | |
4272 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
4273 | goto error; | |
4274 | ||
4275 | found_prefix = true; | |
4276 | } | |
6de9cd9a | 4277 | |
e6c14898 DK |
4278 | if (gfc_match ("recursive% ") == MATCH_YES) |
4279 | { | |
4280 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
4281 | goto error; | |
4282 | ||
4283 | found_prefix = true; | |
4284 | } | |
4285 | ||
4286 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4287 | attribute but rather only prevents ELEMENTAL routines from being | |
4288 | automatically PURE. */ | |
4289 | if (gfc_match ("impure% ") == MATCH_YES) | |
4290 | { | |
4291 | if (gfc_notify_std (GFC_STD_F2008, | |
4292 | "Fortran 2008: IMPURE procedure at %C") | |
4293 | == FAILURE) | |
4294 | goto error; | |
4295 | ||
4296 | seen_impure = true; | |
4297 | found_prefix = true; | |
4298 | } | |
6de9cd9a | 4299 | } |
e6c14898 | 4300 | while (found_prefix); |
6de9cd9a | 4301 | |
e6c14898 DK |
4302 | /* IMPURE and PURE must not both appear, of course. */ |
4303 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4304 | { |
e6c14898 DK |
4305 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4306 | goto error; | |
6de9cd9a DN |
4307 | } |
4308 | ||
e6c14898 DK |
4309 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4310 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4311 | { |
e6c14898 | 4312 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) |
f37e928c | 4313 | goto error; |
6de9cd9a DN |
4314 | } |
4315 | ||
4316 | /* At this point, the next item is not a prefix. */ | |
3df684e2 DK |
4317 | gcc_assert (gfc_matching_prefix); |
4318 | gfc_matching_prefix = false; | |
6de9cd9a | 4319 | return MATCH_YES; |
f37e928c DK |
4320 | |
4321 | error: | |
3df684e2 DK |
4322 | gcc_assert (gfc_matching_prefix); |
4323 | gfc_matching_prefix = false; | |
f37e928c | 4324 | return MATCH_ERROR; |
6de9cd9a DN |
4325 | } |
4326 | ||
4327 | ||
1c8bcdf7 | 4328 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4329 | |
17b1d2a0 | 4330 | static gfc_try |
636dff67 | 4331 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4332 | { |
6de9cd9a DN |
4333 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
4334 | return FAILURE; | |
4335 | ||
4336 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
4337 | return FAILURE; | |
4338 | ||
4339 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
4340 | return FAILURE; | |
4341 | ||
4342 | return SUCCESS; | |
4343 | } | |
4344 | ||
4345 | ||
4346 | /* Match a formal argument list. */ | |
4347 | ||
4348 | match | |
636dff67 | 4349 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4350 | { |
4351 | gfc_formal_arglist *head, *tail, *p, *q; | |
4352 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4353 | gfc_symbol *sym; | |
4354 | match m; | |
4355 | ||
4356 | head = tail = NULL; | |
4357 | ||
4358 | if (gfc_match_char ('(') != MATCH_YES) | |
4359 | { | |
4360 | if (null_flag) | |
4361 | goto ok; | |
4362 | return MATCH_NO; | |
4363 | } | |
4364 | ||
4365 | if (gfc_match_char (')') == MATCH_YES) | |
4366 | goto ok; | |
4367 | ||
4368 | for (;;) | |
4369 | { | |
4370 | if (gfc_match_char ('*') == MATCH_YES) | |
4371 | sym = NULL; | |
4372 | else | |
4373 | { | |
4374 | m = gfc_match_name (name); | |
4375 | if (m != MATCH_YES) | |
4376 | goto cleanup; | |
4377 | ||
4378 | if (gfc_get_symbol (name, NULL, &sym)) | |
4379 | goto cleanup; | |
4380 | } | |
4381 | ||
4382 | p = gfc_get_formal_arglist (); | |
4383 | ||
4384 | if (head == NULL) | |
4385 | head = tail = p; | |
4386 | else | |
4387 | { | |
4388 | tail->next = p; | |
4389 | tail = p; | |
4390 | } | |
4391 | ||
4392 | tail->sym = sym; | |
4393 | ||
4394 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4395 | dummy procedure. We don't apply these attributes to formal |
4396 | arguments of statement functions. */ | |
6de9cd9a | 4397 | if (sym != NULL && !st_flag |
231b2fcc | 4398 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
6de9cd9a DN |
4399 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
4400 | { | |
4401 | m = MATCH_ERROR; | |
4402 | goto cleanup; | |
4403 | } | |
4404 | ||
4405 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4406 | so check for it explicitly. After the statement is accepted, |
4407 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4408 | if (gfc_new_block != NULL && sym != NULL |
4409 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4410 | { | |
4411 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4412 | sym->name); | |
4413 | m = MATCH_ERROR; | |
4414 | goto cleanup; | |
4415 | } | |
4416 | ||
4417 | if (gfc_match_char (')') == MATCH_YES) | |
4418 | goto ok; | |
4419 | ||
4420 | m = gfc_match_char (','); | |
4421 | if (m != MATCH_YES) | |
4422 | { | |
4423 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4424 | goto cleanup; | |
4425 | } | |
4426 | } | |
4427 | ||
4428 | ok: | |
4429 | /* Check for duplicate symbols in the formal argument list. */ | |
4430 | if (head != NULL) | |
4431 | { | |
4432 | for (p = head; p->next; p = p->next) | |
4433 | { | |
4434 | if (p->sym == NULL) | |
4435 | continue; | |
4436 | ||
4437 | for (q = p->next; q; q = q->next) | |
4438 | if (p->sym == q->sym) | |
4439 | { | |
636dff67 SK |
4440 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4441 | "at %C", p->sym->name); | |
6de9cd9a DN |
4442 | |
4443 | m = MATCH_ERROR; | |
4444 | goto cleanup; | |
4445 | } | |
4446 | } | |
4447 | } | |
4448 | ||
66e4ab31 SK |
4449 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
4450 | == FAILURE) | |
6de9cd9a DN |
4451 | { |
4452 | m = MATCH_ERROR; | |
4453 | goto cleanup; | |
4454 | } | |
4455 | ||
4456 | return MATCH_YES; | |
4457 | ||
4458 | cleanup: | |
4459 | gfc_free_formal_arglist (head); | |
4460 | return m; | |
4461 | } | |
4462 | ||
4463 | ||
4464 | /* Match a RESULT specification following a function declaration or | |
4465 | ENTRY statement. Also matches the end-of-statement. */ | |
4466 | ||
4467 | static match | |
66e4ab31 | 4468 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4469 | { |
4470 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4471 | gfc_symbol *r; | |
4472 | match m; | |
4473 | ||
4474 | if (gfc_match (" result (") != MATCH_YES) | |
4475 | return MATCH_NO; | |
4476 | ||
4477 | m = gfc_match_name (name); | |
4478 | if (m != MATCH_YES) | |
4479 | return m; | |
4480 | ||
a8b3b0b6 CR |
4481 | /* Get the right paren, and that's it because there could be the |
4482 | bind(c) attribute after the result clause. */ | |
4483 | if (gfc_match_char(')') != MATCH_YES) | |
6de9cd9a | 4484 | { |
a8b3b0b6 | 4485 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4486 | return MATCH_ERROR; |
4487 | } | |
4488 | ||
4489 | if (strcmp (function->name, name) == 0) | |
4490 | { | |
636dff67 | 4491 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4492 | return MATCH_ERROR; |
4493 | } | |
4494 | ||
4495 | if (gfc_get_symbol (name, NULL, &r)) | |
4496 | return MATCH_ERROR; | |
4497 | ||
726d8566 | 4498 | if (gfc_add_result (&r->attr, r->name, NULL) == FAILURE) |
6de9cd9a DN |
4499 | return MATCH_ERROR; |
4500 | ||
4501 | *result = r; | |
4502 | ||
4503 | return MATCH_YES; | |
4504 | } | |
4505 | ||
4506 | ||
a8b3b0b6 CR |
4507 | /* Match a function suffix, which could be a combination of a result |
4508 | clause and BIND(C), either one, or neither. The draft does not | |
4509 | require them to come in a specific order. */ | |
4510 | ||
4511 | match | |
4512 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4513 | { | |
4514 | match is_bind_c; /* Found bind(c). */ | |
4515 | match is_result; /* Found result clause. */ | |
4516 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4517 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4518 | bool allow_binding_name; |
a8b3b0b6 CR |
4519 | |
4520 | /* Initialize to having found nothing. */ | |
4521 | found_match = MATCH_NO; | |
4522 | is_bind_c = MATCH_NO; | |
4523 | is_result = MATCH_NO; | |
4524 | ||
4525 | /* Get the next char to narrow between result and bind(c). */ | |
4526 | gfc_gobble_whitespace (); | |
8fc541d3 | 4527 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4528 | |
1eabf70a TB |
4529 | /* C binding names are not allowed for internal procedures. */ |
4530 | if (gfc_current_state () == COMP_CONTAINS | |
4531 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4532 | allow_binding_name = false; | |
4533 | else | |
4534 | allow_binding_name = true; | |
4535 | ||
a8b3b0b6 CR |
4536 | switch (peek_char) |
4537 | { | |
4538 | case 'r': | |
4539 | /* Look for result clause. */ | |
4540 | is_result = match_result (sym, result); | |
4541 | if (is_result == MATCH_YES) | |
4542 | { | |
4543 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4544 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4545 | /* We've found the result clause and possibly bind(c). */ |
4546 | found_match = MATCH_YES; | |
4547 | } | |
4548 | else | |
4549 | /* This should only be MATCH_ERROR. */ | |
4550 | found_match = is_result; | |
4551 | break; | |
4552 | case 'b': | |
4553 | /* Look for bind(c) first. */ | |
1eabf70a | 4554 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4555 | if (is_bind_c == MATCH_YES) |
4556 | { | |
4557 | /* Now see if a result clause followed it. */ | |
4558 | is_result = match_result (sym, result); | |
4559 | found_match = MATCH_YES; | |
4560 | } | |
4561 | else | |
4562 | { | |
4563 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4564 | found_match = MATCH_ERROR; | |
4565 | } | |
4566 | break; | |
4567 | default: | |
4568 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4569 | found_match = MATCH_ERROR; | |
4570 | break; | |
4571 | } | |
4572 | ||
a8b3b0b6 | 4573 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4574 | { |
1eabf70a | 4575 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4576 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4577 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
fdc54e88 FXC |
4578 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
4579 | "at %L may not be specified for an internal " | |
4580 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
4581 | == FAILURE) |
4582 | return MATCH_ERROR; | |
4583 | ||
01f4fff1 TB |
4584 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) |
4585 | == FAILURE) | |
4586 | return MATCH_ERROR; | |
4587 | } | |
a8b3b0b6 CR |
4588 | |
4589 | return found_match; | |
4590 | } | |
4591 | ||
4592 | ||
3070bab4 JW |
4593 | /* Procedure pointer return value without RESULT statement: |
4594 | Add "hidden" result variable named "ppr@". */ | |
4595 | ||
4596 | static gfc_try | |
4597 | add_hidden_procptr_result (gfc_symbol *sym) | |
4598 | { | |
4599 | bool case1,case2; | |
4600 | ||
4601 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
4602 | return FAILURE; | |
4603 | ||
4604 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4605 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4606 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4607 | && sym->attr.external; | |
4608 | /* Second usage case: INTERFACE statements. */ | |
4609 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4610 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4611 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4612 | ||
4613 | if (case1 || case2) | |
4614 | { | |
4615 | gfc_symtree *stree; | |
4616 | if (case1) | |
08a6b8e0 | 4617 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4618 | else if (case2) |
c73b6478 JW |
4619 | { |
4620 | gfc_symtree *st2; | |
08a6b8e0 | 4621 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4622 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4623 | st2->n.sym = stree->n.sym; | |
4624 | } | |
3070bab4 JW |
4625 | sym->result = stree->n.sym; |
4626 | ||
4627 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4628 | sym->result->attr.pointer = sym->attr.pointer; | |
4629 | sym->result->attr.external = sym->attr.external; | |
4630 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4631 | sym->result->ts = sym->ts; |
3070bab4 JW |
4632 | sym->attr.proc_pointer = 0; |
4633 | sym->attr.pointer = 0; | |
4634 | sym->attr.external = 0; | |
4635 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4636 | { | |
4637 | sym->result->attr.pointer = 0; | |
4638 | sym->result->attr.proc_pointer = 1; | |
4639 | } | |
4640 | ||
4641 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4642 | } | |
4643 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4644 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4645 | && sym->result && sym->result != sym && sym->result->attr.external | |
4646 | && sym == gfc_current_ns->proc_name | |
4647 | && sym == sym->result->ns->proc_name | |
4648 | && strcmp ("ppr@", sym->result->name) == 0) | |
4649 | { | |
4650 | sym->result->attr.proc_pointer = 1; | |
4651 | sym->attr.pointer = 0; | |
4652 | return SUCCESS; | |
4653 | } | |
4654 | else | |
4655 | return FAILURE; | |
4656 | } | |
4657 | ||
4658 | ||
713485cc JW |
4659 | /* Match the interface for a PROCEDURE declaration, |
4660 | including brackets (R1212). */ | |
69773742 JW |
4661 | |
4662 | static match | |
713485cc | 4663 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
4664 | { |
4665 | match m; | |
3276e0b3 | 4666 | gfc_symtree *st; |
69773742 | 4667 | locus old_loc, entry_loc; |
3276e0b3 PT |
4668 | gfc_namespace *old_ns = gfc_current_ns; |
4669 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 4670 | |
3276e0b3 | 4671 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
4672 | gfc_clear_ts (¤t_ts); |
4673 | ||
4674 | if (gfc_match (" (") != MATCH_YES) | |
4675 | { | |
4676 | gfc_current_locus = entry_loc; | |
4677 | return MATCH_NO; | |
4678 | } | |
4679 | ||
4680 | /* Get the type spec. for the procedure interface. */ | |
4681 | old_loc = gfc_current_locus; | |
e74f1cc8 | 4682 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 4683 | gfc_gobble_whitespace (); |
8fc541d3 | 4684 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
4685 | goto got_ts; |
4686 | ||
4687 | if (m == MATCH_ERROR) | |
4688 | return m; | |
4689 | ||
3276e0b3 | 4690 | /* Procedure interface is itself a procedure. */ |
69773742 | 4691 | gfc_current_locus = old_loc; |
3276e0b3 | 4692 | m = gfc_match_name (name); |
69773742 | 4693 | |
3276e0b3 PT |
4694 | /* First look to see if it is already accessible in the current |
4695 | namespace because it is use associated or contained. */ | |
4696 | st = NULL; | |
4697 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4698 | return MATCH_ERROR; | |
4699 | ||
4700 | /* If it is still not found, then try the parent namespace, if it | |
4701 | exists and create the symbol there if it is still not found. */ | |
4702 | if (gfc_current_ns->parent) | |
4703 | gfc_current_ns = gfc_current_ns->parent; | |
4704 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4705 | return MATCH_ERROR; | |
4706 | ||
4707 | gfc_current_ns = old_ns; | |
4708 | *proc_if = st->n.sym; | |
69773742 JW |
4709 | |
4710 | /* Various interface checks. */ | |
713485cc | 4711 | if (*proc_if) |
69773742 | 4712 | { |
713485cc | 4713 | (*proc_if)->refs++; |
bb343a6c TB |
4714 | /* Resolve interface if possible. That way, attr.procedure is only set |
4715 | if it is declared by a later procedure-declaration-stmt, which is | |
4716 | invalid per C1212. */ | |
713485cc JW |
4717 | while ((*proc_if)->ts.interface) |
4718 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 4719 | |
713485cc | 4720 | if ((*proc_if)->generic) |
69773742 | 4721 | { |
713485cc JW |
4722 | gfc_error ("Interface '%s' at %C may not be generic", |
4723 | (*proc_if)->name); | |
69773742 JW |
4724 | return MATCH_ERROR; |
4725 | } | |
713485cc | 4726 | if ((*proc_if)->attr.proc == PROC_ST_FUNCTION) |
69773742 JW |
4727 | { |
4728 | gfc_error ("Interface '%s' at %C may not be a statement function", | |
713485cc | 4729 | (*proc_if)->name); |
69773742 JW |
4730 | return MATCH_ERROR; |
4731 | } | |
4732 | /* Handle intrinsic procedures. */ | |
713485cc JW |
4733 | if (!((*proc_if)->attr.external || (*proc_if)->attr.use_assoc |
4734 | || (*proc_if)->attr.if_source == IFSRC_IFBODY) | |
4735 | && (gfc_is_intrinsic ((*proc_if), 0, gfc_current_locus) | |
4736 | || gfc_is_intrinsic ((*proc_if), 1, gfc_current_locus))) | |
4737 | (*proc_if)->attr.intrinsic = 1; | |
4738 | if ((*proc_if)->attr.intrinsic | |
4739 | && !gfc_intrinsic_actual_ok ((*proc_if)->name, 0)) | |
69773742 JW |
4740 | { |
4741 | gfc_error ("Intrinsic procedure '%s' not allowed " | |
713485cc | 4742 | "in PROCEDURE statement at %C", (*proc_if)->name); |
69773742 JW |
4743 | return MATCH_ERROR; |
4744 | } | |
69773742 JW |
4745 | } |
4746 | ||
4747 | got_ts: | |
69773742 JW |
4748 | if (gfc_match (" )") != MATCH_YES) |
4749 | { | |
4750 | gfc_current_locus = entry_loc; | |
4751 | return MATCH_NO; | |
4752 | } | |
4753 | ||
713485cc JW |
4754 | return MATCH_YES; |
4755 | } | |
4756 | ||
4757 | ||
4758 | /* Match a PROCEDURE declaration (R1211). */ | |
4759 | ||
4760 | static match | |
4761 | match_procedure_decl (void) | |
4762 | { | |
4763 | match m; | |
4764 | gfc_symbol *sym, *proc_if = NULL; | |
4765 | int num; | |
4766 | gfc_expr *initializer = NULL; | |
4767 | ||
4768 | /* Parse interface (with brackets). */ | |
4769 | m = match_procedure_interface (&proc_if); | |
4770 | if (m != MATCH_YES) | |
4771 | return m; | |
4772 | ||
4773 | /* Parse attributes (with colons). */ | |
69773742 JW |
4774 | m = match_attr_spec(); |
4775 | if (m == MATCH_ERROR) | |
4776 | return MATCH_ERROR; | |
4777 | ||
4778 | /* Get procedure symbols. */ | |
4779 | for(num=1;;num++) | |
4780 | { | |
69773742 JW |
4781 | m = gfc_match_symbol (&sym, 0); |
4782 | if (m == MATCH_NO) | |
4783 | goto syntax; | |
4784 | else if (m == MATCH_ERROR) | |
4785 | return m; | |
4786 | ||
4787 | /* Add current_attr to the symbol attributes. */ | |
4788 | if (gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4789 | return MATCH_ERROR; | |
4790 | ||
4791 | if (sym->attr.is_bind_c) | |
4792 | { | |
4793 | /* Check for C1218. */ | |
4794 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4795 | { | |
4796 | gfc_error ("BIND(C) attribute at %C requires " | |
4797 | "an interface with BIND(C)"); | |
4798 | return MATCH_ERROR; | |
4799 | } | |
4800 | /* Check for C1217. */ | |
4801 | if (has_name_equals && sym->attr.pointer) | |
4802 | { | |
4803 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4804 | "POINTER attribute at %C"); | |
4805 | return MATCH_ERROR; | |
4806 | } | |
4807 | if (has_name_equals && sym->attr.dummy) | |
4808 | { | |
4809 | gfc_error ("Dummy procedure at %C may not have " | |
4810 | "BIND(C) attribute with NAME"); | |
4811 | return MATCH_ERROR; | |
4812 | } | |
4813 | /* Set binding label for BIND(C). */ | |
4814 | if (set_binding_label (sym->binding_label, sym->name, num) != SUCCESS) | |
4815 | return MATCH_ERROR; | |
4816 | } | |
4817 | ||
8fb74da4 | 4818 | if (gfc_add_external (&sym->attr, NULL) == FAILURE) |
69773742 | 4819 | return MATCH_ERROR; |
3070bab4 JW |
4820 | |
4821 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
4822 | sym = sym->result; | |
4823 | ||
69773742 JW |
4824 | if (gfc_add_proc (&sym->attr, sym->name, NULL) == FAILURE) |
4825 | return MATCH_ERROR; | |
4826 | ||
4827 | /* Set interface. */ | |
4828 | if (proc_if != NULL) | |
6cc309c9 | 4829 | { |
1d146030 JW |
4830 | if (sym->ts.type != BT_UNKNOWN) |
4831 | { | |
4832 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4833 | sym->name, &gfc_current_locus, | |
4834 | gfc_basic_typename (sym->ts.type)); | |
4835 | return MATCH_ERROR; | |
4836 | } | |
32d99e68 | 4837 | sym->ts.interface = proc_if; |
6cc309c9 | 4838 | sym->attr.untyped = 1; |
c73b6478 | 4839 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 4840 | } |
69773742 JW |
4841 | else if (current_ts.type != BT_UNKNOWN) |
4842 | { | |
1d146030 JW |
4843 | if (gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) |
4844 | return MATCH_ERROR; | |
32d99e68 JW |
4845 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4846 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 4847 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 4848 | sym->ts.interface->attr.function = 1; |
d91909c0 | 4849 | sym->attr.function = 1; |
c73b6478 | 4850 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
4851 | } |
4852 | ||
8fb74da4 JW |
4853 | if (gfc_match (" =>") == MATCH_YES) |
4854 | { | |
4855 | if (!current_attr.pointer) | |
4856 | { | |
4857 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4858 | m = MATCH_ERROR; | |
4859 | goto cleanup; | |
4860 | } | |
4861 | ||
80f95228 | 4862 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
4863 | if (m != MATCH_YES) |
4864 | goto cleanup; | |
4865 | ||
4866 | if (add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus) | |
4867 | != SUCCESS) | |
4868 | goto cleanup; | |
4869 | ||
4870 | } | |
4871 | ||
4872 | gfc_set_sym_referenced (sym); | |
4873 | ||
69773742 JW |
4874 | if (gfc_match_eos () == MATCH_YES) |
4875 | return MATCH_YES; | |
4876 | if (gfc_match_char (',') != MATCH_YES) | |
4877 | goto syntax; | |
4878 | } | |
4879 | ||
4880 | syntax: | |
4881 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4882 | return MATCH_ERROR; | |
8fb74da4 JW |
4883 | |
4884 | cleanup: | |
4885 | /* Free stuff up and return. */ | |
4886 | gfc_free_expr (initializer); | |
4887 | return m; | |
69773742 JW |
4888 | } |
4889 | ||
4890 | ||
713485cc JW |
4891 | static match |
4892 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4893 | ||
4894 | ||
4895 | /* Match a procedure pointer component declaration (R445). */ | |
4896 | ||
4897 | static match | |
4898 | match_ppc_decl (void) | |
4899 | { | |
4900 | match m; | |
4901 | gfc_symbol *proc_if = NULL; | |
4902 | gfc_typespec ts; | |
4903 | int num; | |
4904 | gfc_component *c; | |
4905 | gfc_expr *initializer = NULL; | |
4906 | gfc_typebound_proc* tb; | |
4907 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4908 | ||
4909 | /* Parse interface (with brackets). */ | |
4910 | m = match_procedure_interface (&proc_if); | |
4911 | if (m != MATCH_YES) | |
4912 | goto syntax; | |
4913 | ||
4914 | /* Parse attributes. */ | |
4915 | tb = XCNEW (gfc_typebound_proc); | |
4916 | tb->where = gfc_current_locus; | |
4917 | m = match_binding_attributes (tb, false, true); | |
4918 | if (m == MATCH_ERROR) | |
4919 | return m; | |
4920 | ||
713485cc JW |
4921 | gfc_clear_attr (¤t_attr); |
4922 | current_attr.procedure = 1; | |
4923 | current_attr.proc_pointer = 1; | |
4924 | current_attr.access = tb->access; | |
4925 | current_attr.flavor = FL_PROCEDURE; | |
4926 | ||
4927 | /* Match the colons (required). */ | |
4928 | if (gfc_match (" ::") != MATCH_YES) | |
4929 | { | |
4930 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
4931 | return MATCH_ERROR; | |
4932 | } | |
4933 | ||
4934 | /* Check for C450. */ | |
4935 | if (!tb->nopass && proc_if == NULL) | |
4936 | { | |
4937 | gfc_error("NOPASS or explicit interface required at %C"); | |
4938 | return MATCH_ERROR; | |
4939 | } | |
4940 | ||
3212c187 SK |
4941 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Procedure pointer " |
4942 | "component at %C") == FAILURE) | |
4943 | return MATCH_ERROR; | |
4944 | ||
713485cc JW |
4945 | /* Match PPC names. */ |
4946 | ts = current_ts; | |
4947 | for(num=1;;num++) | |
4948 | { | |
4949 | m = gfc_match_name (name); | |
4950 | if (m == MATCH_NO) | |
4951 | goto syntax; | |
4952 | else if (m == MATCH_ERROR) | |
4953 | return m; | |
4954 | ||
4955 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
4956 | return MATCH_ERROR; | |
4957 | ||
4958 | /* Add current_attr to the symbol attributes. */ | |
4959 | if (gfc_copy_attr (&c->attr, ¤t_attr, NULL) == FAILURE) | |
4960 | return MATCH_ERROR; | |
4961 | ||
4962 | if (gfc_add_external (&c->attr, NULL) == FAILURE) | |
4963 | return MATCH_ERROR; | |
4964 | ||
4965 | if (gfc_add_proc (&c->attr, name, NULL) == FAILURE) | |
4966 | return MATCH_ERROR; | |
4967 | ||
90661f26 JW |
4968 | c->tb = tb; |
4969 | ||
713485cc JW |
4970 | /* Set interface. */ |
4971 | if (proc_if != NULL) | |
4972 | { | |
4973 | c->ts.interface = proc_if; | |
4974 | c->attr.untyped = 1; | |
4975 | c->attr.if_source = IFSRC_IFBODY; | |
4976 | } | |
4977 | else if (ts.type != BT_UNKNOWN) | |
4978 | { | |
4979 | c->ts = ts; | |
4980 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
4981 | c->ts.interface->ts = ts; | |
d91909c0 | 4982 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 4983 | c->ts.interface->attr.function = 1; |
d91909c0 | 4984 | c->attr.function = 1; |
713485cc JW |
4985 | c->attr.if_source = IFSRC_UNKNOWN; |
4986 | } | |
4987 | ||
4988 | if (gfc_match (" =>") == MATCH_YES) | |
4989 | { | |
80f95228 | 4990 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
4991 | if (m != MATCH_YES) |
4992 | { | |
4993 | gfc_free_expr (initializer); | |
4994 | return m; | |
4995 | } | |
4996 | c->initializer = initializer; | |
4997 | } | |
4998 | ||
4999 | if (gfc_match_eos () == MATCH_YES) | |
5000 | return MATCH_YES; | |
5001 | if (gfc_match_char (',') != MATCH_YES) | |
5002 | goto syntax; | |
5003 | } | |
5004 | ||
5005 | syntax: | |
5006 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5007 | return MATCH_ERROR; | |
5008 | } | |
5009 | ||
5010 | ||
69773742 JW |
5011 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5012 | ||
5013 | static match | |
5014 | match_procedure_in_interface (void) | |
5015 | { | |
5016 | match m; | |
5017 | gfc_symbol *sym; | |
5018 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5019 | ||
5020 | if (current_interface.type == INTERFACE_NAMELESS | |
5021 | || current_interface.type == INTERFACE_ABSTRACT) | |
5022 | { | |
5023 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5024 | return MATCH_ERROR; | |
5025 | } | |
5026 | ||
5027 | for(;;) | |
5028 | { | |
5029 | m = gfc_match_name (name); | |
5030 | if (m == MATCH_NO) | |
5031 | goto syntax; | |
5032 | else if (m == MATCH_ERROR) | |
5033 | return m; | |
5034 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5035 | return MATCH_ERROR; | |
5036 | ||
5037 | if (gfc_add_interface (sym) == FAILURE) | |
5038 | return MATCH_ERROR; | |
5039 | ||
69773742 JW |
5040 | if (gfc_match_eos () == MATCH_YES) |
5041 | break; | |
5042 | if (gfc_match_char (',') != MATCH_YES) | |
5043 | goto syntax; | |
5044 | } | |
5045 | ||
5046 | return MATCH_YES; | |
5047 | ||
5048 | syntax: | |
5049 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5050 | return MATCH_ERROR; | |
5051 | } | |
5052 | ||
5053 | ||
5054 | /* General matcher for PROCEDURE declarations. */ | |
5055 | ||
30b608eb DK |
5056 | static match match_procedure_in_type (void); |
5057 | ||
69773742 JW |
5058 | match |
5059 | gfc_match_procedure (void) | |
5060 | { | |
5061 | match m; | |
5062 | ||
5063 | switch (gfc_current_state ()) | |
5064 | { | |
5065 | case COMP_NONE: | |
5066 | case COMP_PROGRAM: | |
5067 | case COMP_MODULE: | |
5068 | case COMP_SUBROUTINE: | |
5069 | case COMP_FUNCTION: | |
3547d57e | 5070 | case COMP_BLOCK: |
69773742 JW |
5071 | m = match_procedure_decl (); |
5072 | break; | |
5073 | case COMP_INTERFACE: | |
5074 | m = match_procedure_in_interface (); | |
5075 | break; | |
5076 | case COMP_DERIVED: | |
713485cc JW |
5077 | m = match_ppc_decl (); |
5078 | break; | |
30b608eb DK |
5079 | case COMP_DERIVED_CONTAINS: |
5080 | m = match_procedure_in_type (); | |
5081 | break; | |
69773742 JW |
5082 | default: |
5083 | return MATCH_NO; | |
5084 | } | |
5085 | ||
5086 | if (m != MATCH_YES) | |
5087 | return m; | |
5088 | ||
5089 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROCEDURE statement at %C") | |
5090 | == FAILURE) | |
5091 | return MATCH_ERROR; | |
5092 | ||
5093 | return m; | |
5094 | } | |
5095 | ||
5096 | ||
c3005b0f DK |
5097 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5098 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5099 | parser-state-stack to find out whether we're in a module. */ | |
5100 | ||
5101 | static void | |
5102 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5103 | { | |
5104 | bool in_module; | |
5105 | ||
5106 | in_module = (gfc_state_stack->previous | |
5107 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5108 | ||
5109 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5110 | } | |
5111 | ||
5112 | ||
6de9cd9a DN |
5113 | /* Match a function declaration. */ |
5114 | ||
5115 | match | |
5116 | gfc_match_function_decl (void) | |
5117 | { | |
5118 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5119 | gfc_symbol *sym, *result; | |
5120 | locus old_loc; | |
5121 | match m; | |
a8b3b0b6 CR |
5122 | match suffix_match; |
5123 | match found_match; /* Status returned by match func. */ | |
6de9cd9a DN |
5124 | |
5125 | if (gfc_current_state () != COMP_NONE | |
5126 | && gfc_current_state () != COMP_INTERFACE | |
5127 | && gfc_current_state () != COMP_CONTAINS) | |
5128 | return MATCH_NO; | |
5129 | ||
5130 | gfc_clear_ts (¤t_ts); | |
5131 | ||
63645982 | 5132 | old_loc = gfc_current_locus; |
6de9cd9a | 5133 | |
1c8bcdf7 | 5134 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5135 | if (m != MATCH_YES) |
5136 | { | |
63645982 | 5137 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5138 | return m; |
5139 | } | |
5140 | ||
5141 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5142 | { | |
63645982 | 5143 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5144 | return MATCH_NO; |
5145 | } | |
1a492601 | 5146 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5147 | return MATCH_ERROR; |
3070bab4 JW |
5148 | |
5149 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
5150 | sym = sym->result; | |
5151 | ||
6de9cd9a DN |
5152 | gfc_new_block = sym; |
5153 | ||
5154 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5155 | if (m == MATCH_NO) | |
2b9a33ae TS |
5156 | { |
5157 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5158 | "definition at %C"); |
2b9a33ae TS |
5159 | m = MATCH_ERROR; |
5160 | goto cleanup; | |
5161 | } | |
6de9cd9a DN |
5162 | else if (m == MATCH_ERROR) |
5163 | goto cleanup; | |
5164 | ||
5165 | result = NULL; | |
5166 | ||
a8b3b0b6 CR |
5167 | /* According to the draft, the bind(c) and result clause can |
5168 | come in either order after the formal_arg_list (i.e., either | |
5169 | can be first, both can exist together or by themselves or neither | |
5170 | one). Therefore, the match_result can't match the end of the | |
5171 | string, and check for the bind(c) or result clause in either order. */ | |
5172 | found_match = gfc_match_eos (); | |
5173 | ||
5174 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5175 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5176 | not allowed for procedures. */ | |
5177 | if (sym->attr.is_bind_c == 1) | |
5178 | { | |
5179 | sym->attr.is_bind_c = 0; | |
5180 | if (sym->old_symbol != NULL) | |
5181 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5182 | "variables or common blocks", | |
5183 | &(sym->old_symbol->declared_at)); | |
5184 | else | |
5185 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5186 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5187 | } |
5188 | ||
a8b3b0b6 | 5189 | if (found_match != MATCH_YES) |
6de9cd9a | 5190 | { |
a8b3b0b6 CR |
5191 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5192 | suffix_match = gfc_match_suffix (sym, &result); | |
5193 | if (suffix_match == MATCH_YES) | |
5194 | /* Need to get the eos now. */ | |
5195 | found_match = gfc_match_eos (); | |
5196 | else | |
5197 | found_match = suffix_match; | |
6de9cd9a DN |
5198 | } |
5199 | ||
a8b3b0b6 CR |
5200 | if(found_match != MATCH_YES) |
5201 | m = MATCH_ERROR; | |
6de9cd9a DN |
5202 | else |
5203 | { | |
a8b3b0b6 CR |
5204 | /* Make changes to the symbol. */ |
5205 | m = MATCH_ERROR; | |
5206 | ||
5207 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
5208 | goto cleanup; | |
5209 | ||
5210 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
5211 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5212 | goto cleanup; | |
6de9cd9a | 5213 | |
a99d95a2 | 5214 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5215 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5216 | sym->declared_at = old_loc; |
5217 | if (current_ts.type != BT_UNKNOWN) | |
5218 | current_ts.kind = -1; | |
5219 | else | |
5220 | current_ts.kind = 0; | |
1c8bcdf7 | 5221 | |
a8b3b0b6 CR |
5222 | if (result == NULL) |
5223 | { | |
6de7294f JW |
5224 | if (current_ts.type != BT_UNKNOWN |
5225 | && gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) | |
5226 | goto cleanup; | |
a8b3b0b6 CR |
5227 | sym->result = sym; |
5228 | } | |
5229 | else | |
5230 | { | |
6de7294f JW |
5231 | if (current_ts.type != BT_UNKNOWN |
5232 | && gfc_add_type (result, ¤t_ts, &gfc_current_locus) | |
5233 | == FAILURE) | |
5234 | goto cleanup; | |
a8b3b0b6 CR |
5235 | sym->result = result; |
5236 | } | |
5237 | ||
c3005b0f DK |
5238 | /* Warn if this procedure has the same name as an intrinsic. */ |
5239 | warn_intrinsic_shadow (sym, true); | |
5240 | ||
a8b3b0b6 CR |
5241 | return MATCH_YES; |
5242 | } | |
6de9cd9a DN |
5243 | |
5244 | cleanup: | |
63645982 | 5245 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5246 | return m; |
5247 | } | |
5248 | ||
636dff67 SK |
5249 | |
5250 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5251 | pass the name of the entry, rather than the gfc_current_block name, and | |
5252 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5253 | |
5254 | static bool | |
636dff67 | 5255 | add_global_entry (const char *name, int sub) |
68ea355b PT |
5256 | { |
5257 | gfc_gsymbol *s; | |
32e8bb8e | 5258 | enum gfc_symbol_type type; |
68ea355b PT |
5259 | |
5260 | s = gfc_get_gsymbol(name); | |
7389bce6 | 5261 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b PT |
5262 | |
5263 | if (s->defined | |
636dff67 | 5264 | || (s->type != GSYM_UNKNOWN |
7389bce6 | 5265 | && s->type != type)) |
ca39e6f2 | 5266 | gfc_global_used(s, NULL); |
68ea355b PT |
5267 | else |
5268 | { | |
7389bce6 | 5269 | s->type = type; |
68ea355b PT |
5270 | s->where = gfc_current_locus; |
5271 | s->defined = 1; | |
71a7778c | 5272 | s->ns = gfc_current_ns; |
68ea355b PT |
5273 | return true; |
5274 | } | |
5275 | return false; | |
5276 | } | |
6de9cd9a | 5277 | |
636dff67 | 5278 | |
6de9cd9a DN |
5279 | /* Match an ENTRY statement. */ |
5280 | ||
5281 | match | |
5282 | gfc_match_entry (void) | |
5283 | { | |
3d79abbd PB |
5284 | gfc_symbol *proc; |
5285 | gfc_symbol *result; | |
5286 | gfc_symbol *entry; | |
6de9cd9a DN |
5287 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5288 | gfc_compile_state state; | |
5289 | match m; | |
3d79abbd | 5290 | gfc_entry_list *el; |
c96cfa49 | 5291 | locus old_loc; |
1a492601 | 5292 | bool module_procedure; |
bc3e7a8c TB |
5293 | char peek_char; |
5294 | match is_bind_c; | |
6de9cd9a DN |
5295 | |
5296 | m = gfc_match_name (name); | |
5297 | if (m != MATCH_YES) | |
5298 | return m; | |
5299 | ||
58fc89f6 TB |
5300 | if (gfc_notify_std (GFC_STD_F2008_OBS, "Fortran 2008 obsolescent feature: " |
5301 | "ENTRY statement at %C") == FAILURE) | |
5302 | return MATCH_ERROR; | |
5303 | ||
3d79abbd | 5304 | state = gfc_current_state (); |
4c93c95a | 5305 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5306 | { |
4c93c95a FXC |
5307 | switch (state) |
5308 | { | |
5309 | case COMP_PROGRAM: | |
5310 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5311 | break; | |
5312 | case COMP_MODULE: | |
5313 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5314 | break; | |
5315 | case COMP_BLOCK_DATA: | |
636dff67 SK |
5316 | gfc_error ("ENTRY statement at %C cannot appear within " |
5317 | "a BLOCK DATA"); | |
4c93c95a FXC |
5318 | break; |
5319 | case COMP_INTERFACE: | |
636dff67 SK |
5320 | gfc_error ("ENTRY statement at %C cannot appear within " |
5321 | "an INTERFACE"); | |
4c93c95a FXC |
5322 | break; |
5323 | case COMP_DERIVED: | |
636dff67 SK |
5324 | gfc_error ("ENTRY statement at %C cannot appear within " |
5325 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5326 | break; |
5327 | case COMP_IF: | |
636dff67 SK |
5328 | gfc_error ("ENTRY statement at %C cannot appear within " |
5329 | "an IF-THEN block"); | |
4c93c95a FXC |
5330 | break; |
5331 | case COMP_DO: | |
8c6a85e3 | 5332 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5333 | gfc_error ("ENTRY statement at %C cannot appear within " |
5334 | "a DO block"); | |
4c93c95a FXC |
5335 | break; |
5336 | case COMP_SELECT: | |
636dff67 SK |
5337 | gfc_error ("ENTRY statement at %C cannot appear within " |
5338 | "a SELECT block"); | |
4c93c95a FXC |
5339 | break; |
5340 | case COMP_FORALL: | |
636dff67 SK |
5341 | gfc_error ("ENTRY statement at %C cannot appear within " |
5342 | "a FORALL block"); | |
4c93c95a FXC |
5343 | break; |
5344 | case COMP_WHERE: | |
636dff67 SK |
5345 | gfc_error ("ENTRY statement at %C cannot appear within " |
5346 | "a WHERE block"); | |
4c93c95a FXC |
5347 | break; |
5348 | case COMP_CONTAINS: | |
636dff67 SK |
5349 | gfc_error ("ENTRY statement at %C cannot appear within " |
5350 | "a contained subprogram"); | |
4c93c95a FXC |
5351 | break; |
5352 | default: | |
5353 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5354 | } | |
3d79abbd PB |
5355 | return MATCH_ERROR; |
5356 | } | |
5357 | ||
1a492601 | 5358 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5359 | && gfc_current_ns->parent->proc_name |
5360 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5361 | == FL_MODULE; | |
1a492601 | 5362 | |
3d79abbd PB |
5363 | if (gfc_current_ns->parent != NULL |
5364 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5365 | && !module_procedure) |
3d79abbd PB |
5366 | { |
5367 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5368 | "contained procedure"); | |
5369 | return MATCH_ERROR; | |
5370 | } | |
5371 | ||
1a492601 PT |
5372 | /* Module function entries need special care in get_proc_name |
5373 | because previous references within the function will have | |
5374 | created symbols attached to the current namespace. */ | |
5375 | if (get_proc_name (name, &entry, | |
5376 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5377 | && module_procedure)) |
6de9cd9a DN |
5378 | return MATCH_ERROR; |
5379 | ||
3d79abbd PB |
5380 | proc = gfc_current_block (); |
5381 | ||
bc3e7a8c TB |
5382 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5383 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5384 | not allowed for procedures. */ | |
5385 | if (entry->attr.is_bind_c == 1) | |
5386 | { | |
5387 | entry->attr.is_bind_c = 0; | |
5388 | if (entry->old_symbol != NULL) | |
5389 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5390 | "variables or common blocks", | |
5391 | &(entry->old_symbol->declared_at)); | |
5392 | else | |
5393 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5394 | "variables or common blocks", &gfc_current_locus); | |
5395 | } | |
5396 | ||
5397 | /* Check what next non-whitespace character is so we can tell if there | |
5398 | is the required parens if we have a BIND(C). */ | |
5399 | gfc_gobble_whitespace (); | |
8fc541d3 | 5400 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5401 | |
3d79abbd | 5402 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5403 | { |
231b2fcc | 5404 | /* An entry in a subroutine. */ |
182393f4 | 5405 | if (!gfc_current_ns->parent && !add_global_entry (name, 1)) |
68ea355b PT |
5406 | return MATCH_ERROR; |
5407 | ||
6de9cd9a DN |
5408 | m = gfc_match_formal_arglist (entry, 0, 1); |
5409 | if (m != MATCH_YES) | |
5410 | return MATCH_ERROR; | |
5411 | ||
1eabf70a TB |
5412 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5413 | never be an internal procedure. */ | |
5414 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5415 | if (is_bind_c == MATCH_ERROR) |
5416 | return MATCH_ERROR; | |
5417 | if (is_bind_c == MATCH_YES) | |
5418 | { | |
5419 | if (peek_char != '(') | |
5420 | { | |
5421 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5422 | return MATCH_ERROR; | |
5423 | } | |
5424 | if (gfc_add_is_bind_c (&(entry->attr), entry->name, &(entry->declared_at), 1) | |
5425 | == FAILURE) | |
5426 | return MATCH_ERROR; | |
5427 | } | |
5428 | ||
231b2fcc TS |
5429 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5430 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a | 5431 | return MATCH_ERROR; |
3d79abbd PB |
5432 | } |
5433 | else | |
5434 | { | |
c96cfa49 | 5435 | /* An entry in a function. |
636dff67 SK |
5436 | We need to take special care because writing |
5437 | ENTRY f() | |
5438 | as | |
5439 | ENTRY f | |
5440 | is allowed, whereas | |
5441 | ENTRY f() RESULT (r) | |
5442 | can't be written as | |
5443 | ENTRY f RESULT (r). */ | |
182393f4 | 5444 | if (!gfc_current_ns->parent && !add_global_entry (name, 0)) |
68ea355b PT |
5445 | return MATCH_ERROR; |
5446 | ||
c96cfa49 TS |
5447 | old_loc = gfc_current_locus; |
5448 | if (gfc_match_eos () == MATCH_YES) | |
5449 | { | |
5450 | gfc_current_locus = old_loc; | |
5451 | /* Match the empty argument list, and add the interface to | |
5452 | the symbol. */ | |
5453 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5454 | } | |
5455 | else | |
5456 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5457 | ||
6de9cd9a DN |
5458 | if (m != MATCH_YES) |
5459 | return MATCH_ERROR; | |
5460 | ||
6de9cd9a DN |
5461 | result = NULL; |
5462 | ||
5463 | if (gfc_match_eos () == MATCH_YES) | |
5464 | { | |
231b2fcc TS |
5465 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5466 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a DN |
5467 | return MATCH_ERROR; |
5468 | ||
d198b59a | 5469 | entry->result = entry; |
6de9cd9a DN |
5470 | } |
5471 | else | |
5472 | { | |
bc3e7a8c | 5473 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5474 | if (m == MATCH_NO) |
5475 | gfc_syntax_error (ST_ENTRY); | |
5476 | if (m != MATCH_YES) | |
5477 | return MATCH_ERROR; | |
5478 | ||
bc3e7a8c TB |
5479 | if (result) |
5480 | { | |
5481 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE | |
5482 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
5483 | || gfc_add_function (&entry->attr, result->name, NULL) | |
5484 | == FAILURE) | |
5485 | return MATCH_ERROR; | |
5486 | entry->result = result; | |
5487 | } | |
5488 | else | |
5489 | { | |
5490 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE | |
5491 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
5492 | return MATCH_ERROR; | |
5493 | entry->result = entry; | |
5494 | } | |
6de9cd9a | 5495 | } |
6de9cd9a DN |
5496 | } |
5497 | ||
5498 | if (gfc_match_eos () != MATCH_YES) | |
5499 | { | |
5500 | gfc_syntax_error (ST_ENTRY); | |
5501 | return MATCH_ERROR; | |
5502 | } | |
5503 | ||
3d79abbd PB |
5504 | entry->attr.recursive = proc->attr.recursive; |
5505 | entry->attr.elemental = proc->attr.elemental; | |
5506 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5507 | |
3d79abbd PB |
5508 | el = gfc_get_entry_list (); |
5509 | el->sym = entry; | |
5510 | el->next = gfc_current_ns->entries; | |
5511 | gfc_current_ns->entries = el; | |
5512 | if (el->next) | |
5513 | el->id = el->next->id + 1; | |
5514 | else | |
5515 | el->id = 1; | |
6de9cd9a | 5516 | |
3d79abbd PB |
5517 | new_st.op = EXEC_ENTRY; |
5518 | new_st.ext.entry = el; | |
5519 | ||
5520 | return MATCH_YES; | |
6de9cd9a DN |
5521 | } |
5522 | ||
5523 | ||
5524 | /* Match a subroutine statement, including optional prefixes. */ | |
5525 | ||
5526 | match | |
5527 | gfc_match_subroutine (void) | |
5528 | { | |
5529 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5530 | gfc_symbol *sym; | |
5531 | match m; | |
a8b3b0b6 CR |
5532 | match is_bind_c; |
5533 | char peek_char; | |
1eabf70a | 5534 | bool allow_binding_name; |
6de9cd9a DN |
5535 | |
5536 | if (gfc_current_state () != COMP_NONE | |
5537 | && gfc_current_state () != COMP_INTERFACE | |
5538 | && gfc_current_state () != COMP_CONTAINS) | |
5539 | return MATCH_NO; | |
5540 | ||
1c8bcdf7 | 5541 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5542 | if (m != MATCH_YES) |
5543 | return m; | |
5544 | ||
5545 | m = gfc_match ("subroutine% %n", name); | |
5546 | if (m != MATCH_YES) | |
5547 | return m; | |
5548 | ||
1a492601 | 5549 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5550 | return MATCH_ERROR; |
3070bab4 | 5551 | |
7fcd5ad5 TB |
5552 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5553 | the symbol existed before. */ | |
5554 | sym->declared_at = gfc_current_locus; | |
5555 | ||
3070bab4 JW |
5556 | if (add_hidden_procptr_result (sym) == SUCCESS) |
5557 | sym = sym->result; | |
5558 | ||
6de9cd9a DN |
5559 | gfc_new_block = sym; |
5560 | ||
a8b3b0b6 | 5561 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5562 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5563 | gfc_gobble_whitespace (); |
8fc541d3 | 5564 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 5565 | |
231b2fcc | 5566 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5567 | return MATCH_ERROR; |
5568 | ||
5569 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5570 | return MATCH_ERROR; | |
5571 | ||
a8b3b0b6 CR |
5572 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5573 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5574 | not allowed for procedures. */ | |
5575 | if (sym->attr.is_bind_c == 1) | |
5576 | { | |
5577 | sym->attr.is_bind_c = 0; | |
5578 | if (sym->old_symbol != NULL) | |
5579 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5580 | "variables or common blocks", | |
5581 | &(sym->old_symbol->declared_at)); | |
5582 | else | |
5583 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5584 | "variables or common blocks", &gfc_current_locus); | |
5585 | } | |
1eabf70a TB |
5586 | |
5587 | /* C binding names are not allowed for internal procedures. */ | |
5588 | if (gfc_current_state () == COMP_CONTAINS | |
5589 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5590 | allow_binding_name = false; | |
5591 | else | |
5592 | allow_binding_name = true; | |
5593 | ||
a8b3b0b6 CR |
5594 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5595 | so, then we need to make sure it's all correct. If it doesn't, | |
5596 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5597 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5598 | if (is_bind_c == MATCH_ERROR) |
5599 | { | |
5600 | /* There was an attempt at the bind(c), but it was wrong. An | |
5601 | error message should have been printed w/in the gfc_match_bind_c | |
5602 | so here we'll just return the MATCH_ERROR. */ | |
5603 | return MATCH_ERROR; | |
5604 | } | |
5605 | ||
5606 | if (is_bind_c == MATCH_YES) | |
5607 | { | |
1eabf70a | 5608 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 5609 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5610 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
fdc54e88 FXC |
5611 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
5612 | "at %L may not be specified for an internal " | |
5613 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
5614 | == FAILURE) |
5615 | return MATCH_ERROR; | |
5616 | ||
a8b3b0b6 CR |
5617 | if (peek_char != '(') |
5618 | { | |
5619 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5620 | return MATCH_ERROR; | |
5621 | } | |
5622 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
5623 | == FAILURE) | |
5624 | return MATCH_ERROR; | |
5625 | } | |
5626 | ||
6de9cd9a DN |
5627 | if (gfc_match_eos () != MATCH_YES) |
5628 | { | |
5629 | gfc_syntax_error (ST_SUBROUTINE); | |
5630 | return MATCH_ERROR; | |
5631 | } | |
5632 | ||
5633 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5634 | return MATCH_ERROR; | |
5635 | ||
c3005b0f DK |
5636 | /* Warn if it has the same name as an intrinsic. */ |
5637 | warn_intrinsic_shadow (sym, false); | |
5638 | ||
6de9cd9a DN |
5639 | return MATCH_YES; |
5640 | } | |
5641 | ||
5642 | ||
a8b3b0b6 CR |
5643 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5644 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 5645 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
5646 | encounter the BIND(C) before the declaration itself. Return |
5647 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5648 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5649 | or MATCH_YES if the specifier was correct and the binding label and | |
5650 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
5651 | current_ts. If allow_binding_name is false, no binding name may be |
5652 | given. */ | |
a8b3b0b6 CR |
5653 | |
5654 | match | |
1eabf70a | 5655 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 CR |
5656 | { |
5657 | /* binding label, if exists */ | |
5658 | char binding_label[GFC_MAX_SYMBOL_LEN + 1]; | |
5659 | match double_quote; | |
5660 | match single_quote; | |
a8b3b0b6 CR |
5661 | |
5662 | /* Initialize the flag that specifies whether we encountered a NAME= | |
5663 | specifier or not. */ | |
5664 | has_name_equals = 0; | |
5665 | ||
5666 | /* Init the first char to nil so we can catch if we don't have | |
5667 | the label (name attr) or the symbol name yet. */ | |
5668 | binding_label[0] = '\0'; | |
5669 | ||
5670 | /* This much we have to be able to match, in this order, if | |
5671 | there is a bind(c) label. */ | |
5672 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5673 | return MATCH_NO; | |
5674 | ||
5675 | /* Now see if there is a binding label, or if we've reached the | |
5676 | end of the bind(c) attribute without one. */ | |
5677 | if (gfc_match_char (',') == MATCH_YES) | |
5678 | { | |
5679 | if (gfc_match (" name = ") != MATCH_YES) | |
5680 | { | |
5681 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5682 | "at %C"); | |
5683 | /* should give an error message here */ | |
5684 | return MATCH_ERROR; | |
5685 | } | |
5686 | ||
5687 | has_name_equals = 1; | |
5688 | ||
5689 | /* Get the opening quote. */ | |
5690 | double_quote = MATCH_YES; | |
5691 | single_quote = MATCH_YES; | |
5692 | double_quote = gfc_match_char ('"'); | |
5693 | if (double_quote != MATCH_YES) | |
5694 | single_quote = gfc_match_char ('\''); | |
5695 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5696 | { | |
5697 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5698 | "at %C"); | |
5699 | return MATCH_ERROR; | |
5700 | } | |
5701 | ||
5702 | /* Grab the binding label, using functions that will not lower | |
5703 | case the names automatically. */ | |
5704 | if (gfc_match_name_C (binding_label) != MATCH_YES) | |
5705 | return MATCH_ERROR; | |
5706 | ||
5707 | /* Get the closing quotation. */ | |
5708 | if (double_quote == MATCH_YES) | |
5709 | { | |
5710 | if (gfc_match_char ('"') != MATCH_YES) | |
5711 | { | |
5712 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5713 | /* User started string with '"' so looked to match it. */ | |
5714 | return MATCH_ERROR; | |
5715 | } | |
5716 | } | |
5717 | else | |
5718 | { | |
5719 | if (gfc_match_char ('\'') != MATCH_YES) | |
5720 | { | |
5721 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5722 | /* User started string with "'" char. */ | |
5723 | return MATCH_ERROR; | |
5724 | } | |
5725 | } | |
5726 | } | |
5727 | ||
5728 | /* Get the required right paren. */ | |
5729 | if (gfc_match_char (')') != MATCH_YES) | |
5730 | { | |
5731 | gfc_error ("Missing closing paren for binding label at %C"); | |
5732 | return MATCH_ERROR; | |
5733 | } | |
5734 | ||
1eabf70a TB |
5735 | if (has_name_equals && !allow_binding_name) |
5736 | { | |
5737 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5738 | return MATCH_ERROR; | |
5739 | } | |
5740 | ||
5741 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5742 | { | |
5743 | gfc_error ("For dummy procedure %s, no binding name is " | |
5744 | "allowed in BIND(C) at %C", sym->name); | |
5745 | return MATCH_ERROR; | |
5746 | } | |
5747 | ||
5748 | ||
a8b3b0b6 CR |
5749 | /* Save the binding label to the symbol. If sym is null, we're |
5750 | probably matching the typespec attributes of a declaration and | |
5751 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
5752 | if (binding_label[0] != '\0') | |
5753 | { | |
5754 | if (sym != NULL) | |
5755 | { | |
c5b5a17a | 5756 | strcpy (sym->binding_label, binding_label); |
a8b3b0b6 CR |
5757 | } |
5758 | else | |
c5b5a17a | 5759 | strcpy (curr_binding_label, binding_label); |
a8b3b0b6 | 5760 | } |
1eabf70a | 5761 | else if (allow_binding_name) |
a8b3b0b6 CR |
5762 | { |
5763 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
5764 | can set the label for it here. |
5765 | If name="" or allow_binding_name is false, no C binding name is | |
5766 | created. */ | |
a8b3b0b6 CR |
5767 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
5768 | strncpy (sym->binding_label, sym->name, strlen (sym->name) + 1); | |
5769 | } | |
9e1d712c | 5770 | |
129d15a3 JW |
5771 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5772 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
5773 | { |
5774 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5775 | return MATCH_ERROR; | |
5776 | } | |
5777 | ||
a8b3b0b6 CR |
5778 | return MATCH_YES; |
5779 | } | |
5780 | ||
5781 | ||
1f2959f0 | 5782 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
5783 | |
5784 | static int | |
5785 | contained_procedure (void) | |
5786 | { | |
083de129 | 5787 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 5788 | |
083de129 TB |
5789 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5790 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5791 | return 1; | |
ddc9ce91 TS |
5792 | |
5793 | return 0; | |
5794 | } | |
5795 | ||
d51347f9 | 5796 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
5797 | interoperable with the corresponding C enumeration type, making |
5798 | sure that -fshort-enums is honored. */ | |
5799 | ||
5800 | static void | |
5801 | set_enum_kind(void) | |
5802 | { | |
5803 | enumerator_history *current_history = NULL; | |
5804 | int kind; | |
5805 | int i; | |
5806 | ||
5807 | if (max_enum == NULL || enum_history == NULL) | |
5808 | return; | |
5809 | ||
cab129d1 | 5810 | if (!flag_short_enums) |
d51347f9 TB |
5811 | return; |
5812 | ||
25d8f0a2 TS |
5813 | i = 0; |
5814 | do | |
5815 | { | |
5816 | kind = gfc_integer_kinds[i++].kind; | |
5817 | } | |
d51347f9 | 5818 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
5819 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5820 | kind) != ARITH_OK); | |
5821 | ||
5822 | current_history = enum_history; | |
5823 | while (current_history != NULL) | |
5824 | { | |
5825 | current_history->sym->ts.kind = kind; | |
5826 | current_history = current_history->next; | |
5827 | } | |
5828 | } | |
5829 | ||
636dff67 | 5830 | |
6de9cd9a | 5831 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
5832 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5833 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
5834 | |
5835 | match | |
636dff67 | 5836 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
5837 | { |
5838 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5839 | gfc_compile_state state; | |
5840 | locus old_loc; | |
5841 | const char *block_name; | |
5842 | const char *target; | |
ddc9ce91 | 5843 | int eos_ok; |
6de9cd9a DN |
5844 | match m; |
5845 | ||
63645982 | 5846 | old_loc = gfc_current_locus; |
6de9cd9a DN |
5847 | if (gfc_match ("end") != MATCH_YES) |
5848 | return MATCH_NO; | |
5849 | ||
5850 | state = gfc_current_state (); | |
636dff67 SK |
5851 | block_name = gfc_current_block () == NULL |
5852 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 5853 | |
03af1e4c | 5854 | switch (state) |
6de9cd9a | 5855 | { |
03af1e4c DK |
5856 | case COMP_ASSOCIATE: |
5857 | case COMP_BLOCK: | |
3a1fd30c | 5858 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
5859 | block_name = NULL; |
5860 | break; | |
5861 | ||
5862 | case COMP_CONTAINS: | |
5863 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 5864 | state = gfc_state_stack->previous->state; |
636dff67 SK |
5865 | block_name = gfc_state_stack->previous->sym == NULL |
5866 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
5867 | break; |
5868 | ||
5869 | default: | |
5870 | break; | |
6de9cd9a DN |
5871 | } |
5872 | ||
5873 | switch (state) | |
5874 | { | |
5875 | case COMP_NONE: | |
5876 | case COMP_PROGRAM: | |
5877 | *st = ST_END_PROGRAM; | |
5878 | target = " program"; | |
ddc9ce91 | 5879 | eos_ok = 1; |
6de9cd9a DN |
5880 | break; |
5881 | ||
5882 | case COMP_SUBROUTINE: | |
5883 | *st = ST_END_SUBROUTINE; | |
5884 | target = " subroutine"; | |
ddc9ce91 | 5885 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5886 | break; |
5887 | ||
5888 | case COMP_FUNCTION: | |
5889 | *st = ST_END_FUNCTION; | |
5890 | target = " function"; | |
ddc9ce91 | 5891 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5892 | break; |
5893 | ||
5894 | case COMP_BLOCK_DATA: | |
5895 | *st = ST_END_BLOCK_DATA; | |
5896 | target = " block data"; | |
ddc9ce91 | 5897 | eos_ok = 1; |
6de9cd9a DN |
5898 | break; |
5899 | ||
5900 | case COMP_MODULE: | |
5901 | *st = ST_END_MODULE; | |
5902 | target = " module"; | |
ddc9ce91 | 5903 | eos_ok = 1; |
6de9cd9a DN |
5904 | break; |
5905 | ||
5906 | case COMP_INTERFACE: | |
5907 | *st = ST_END_INTERFACE; | |
5908 | target = " interface"; | |
ddc9ce91 | 5909 | eos_ok = 0; |
6de9cd9a DN |
5910 | break; |
5911 | ||
5912 | case COMP_DERIVED: | |
30b608eb | 5913 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
5914 | *st = ST_END_TYPE; |
5915 | target = " type"; | |
ddc9ce91 | 5916 | eos_ok = 0; |
6de9cd9a DN |
5917 | break; |
5918 | ||
03af1e4c DK |
5919 | case COMP_ASSOCIATE: |
5920 | *st = ST_END_ASSOCIATE; | |
5921 | target = " associate"; | |
5922 | eos_ok = 0; | |
5923 | break; | |
5924 | ||
9abe5e56 DK |
5925 | case COMP_BLOCK: |
5926 | *st = ST_END_BLOCK; | |
5927 | target = " block"; | |
5928 | eos_ok = 0; | |
5929 | break; | |
5930 | ||
6de9cd9a DN |
5931 | case COMP_IF: |
5932 | *st = ST_ENDIF; | |
5933 | target = " if"; | |
ddc9ce91 | 5934 | eos_ok = 0; |
6de9cd9a DN |
5935 | break; |
5936 | ||
5937 | case COMP_DO: | |
8c6a85e3 | 5938 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
5939 | *st = ST_ENDDO; |
5940 | target = " do"; | |
ddc9ce91 | 5941 | eos_ok = 0; |
6de9cd9a DN |
5942 | break; |
5943 | ||
d0a4a61c TB |
5944 | case COMP_CRITICAL: |
5945 | *st = ST_END_CRITICAL; | |
5946 | target = " critical"; | |
5947 | eos_ok = 0; | |
5948 | break; | |
5949 | ||
6de9cd9a | 5950 | case COMP_SELECT: |
cf2b3c22 | 5951 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
5952 | *st = ST_END_SELECT; |
5953 | target = " select"; | |
ddc9ce91 | 5954 | eos_ok = 0; |
6de9cd9a DN |
5955 | break; |
5956 | ||
5957 | case COMP_FORALL: | |
5958 | *st = ST_END_FORALL; | |
5959 | target = " forall"; | |
ddc9ce91 | 5960 | eos_ok = 0; |
6de9cd9a DN |
5961 | break; |
5962 | ||
5963 | case COMP_WHERE: | |
5964 | *st = ST_END_WHERE; | |
5965 | target = " where"; | |
ddc9ce91 | 5966 | eos_ok = 0; |
6de9cd9a DN |
5967 | break; |
5968 | ||
25d8f0a2 TS |
5969 | case COMP_ENUM: |
5970 | *st = ST_END_ENUM; | |
5971 | target = " enum"; | |
5972 | eos_ok = 0; | |
5973 | last_initializer = NULL; | |
5974 | set_enum_kind (); | |
5975 | gfc_free_enum_history (); | |
5976 | break; | |
5977 | ||
6de9cd9a DN |
5978 | default: |
5979 | gfc_error ("Unexpected END statement at %C"); | |
5980 | goto cleanup; | |
5981 | } | |
5982 | ||
5983 | if (gfc_match_eos () == MATCH_YES) | |
5984 | { | |
272001a2 TB |
5985 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
5986 | { | |
5987 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: END statement " | |
5988 | "instead of %s statement at %L", | |
5989 | gfc_ascii_statement (*st), &old_loc) == FAILURE) | |
5990 | goto cleanup; | |
5991 | } | |
5992 | else if (!eos_ok) | |
6de9cd9a | 5993 | { |
66e4ab31 | 5994 | /* We would have required END [something]. */ |
59ce85b5 TS |
5995 | gfc_error ("%s statement expected at %L", |
5996 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
5997 | goto cleanup; |
5998 | } | |
5999 | ||
6000 | return MATCH_YES; | |
6001 | } | |
6002 | ||
6003 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6004 | if (gfc_match (target) != MATCH_YES) | |
6005 | { | |
6006 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
6007 | goto cleanup; | |
6008 | } | |
6009 | ||
6010 | /* If we're at the end, make sure a block name wasn't required. */ | |
6011 | if (gfc_match_eos () == MATCH_YES) | |
6012 | { | |
6013 | ||
690af379 | 6014 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6015 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6016 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6017 | return MATCH_YES; |
6018 | ||
9abe5e56 | 6019 | if (!block_name) |
6de9cd9a DN |
6020 | return MATCH_YES; |
6021 | ||
6022 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
6023 | block_name, gfc_ascii_statement (*st)); | |
6024 | ||
6025 | return MATCH_ERROR; | |
6026 | } | |
6027 | ||
6028 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6029 | if (*st == ST_END_INTERFACE) | |
6030 | return gfc_match_end_interface (); | |
6031 | ||
66e4ab31 SK |
6032 | /* We haven't hit the end of statement, so what is left must be an |
6033 | end-name. */ | |
6de9cd9a DN |
6034 | m = gfc_match_space (); |
6035 | if (m == MATCH_YES) | |
6036 | m = gfc_match_name (name); | |
6037 | ||
6038 | if (m == MATCH_NO) | |
6039 | gfc_error ("Expected terminating name at %C"); | |
6040 | if (m != MATCH_YES) | |
6041 | goto cleanup; | |
6042 | ||
6043 | if (block_name == NULL) | |
6044 | goto syntax; | |
6045 | ||
3070bab4 | 6046 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a DN |
6047 | { |
6048 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6049 | gfc_ascii_statement (*st)); | |
6050 | goto cleanup; | |
6051 | } | |
3070bab4 JW |
6052 | /* Procedure pointer as function result. */ |
6053 | else if (strcmp (block_name, "ppr@") == 0 | |
6054 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6055 | { | |
6056 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6057 | gfc_current_block ()->ns->proc_name->name, | |
6058 | gfc_ascii_statement (*st)); | |
6059 | goto cleanup; | |
6060 | } | |
6de9cd9a DN |
6061 | |
6062 | if (gfc_match_eos () == MATCH_YES) | |
6063 | return MATCH_YES; | |
6064 | ||
6065 | syntax: | |
6066 | gfc_syntax_error (*st); | |
6067 | ||
6068 | cleanup: | |
63645982 | 6069 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6070 | return MATCH_ERROR; |
6071 | } | |
6072 | ||
6073 | ||
6074 | ||
6075 | /***************** Attribute declaration statements ****************/ | |
6076 | ||
6077 | /* Set the attribute of a single variable. */ | |
6078 | ||
6079 | static match | |
6080 | attr_decl1 (void) | |
6081 | { | |
6082 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6083 | gfc_array_spec *as; | |
6084 | gfc_symbol *sym; | |
6085 | locus var_locus; | |
6086 | match m; | |
6087 | ||
6088 | as = NULL; | |
6089 | ||
6090 | m = gfc_match_name (name); | |
6091 | if (m != MATCH_YES) | |
6092 | goto cleanup; | |
6093 | ||
08a6b8e0 | 6094 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6095 | return MATCH_ERROR; |
6096 | ||
bb9de0c4 JW |
6097 | if (check_function_name (name) == FAILURE) |
6098 | { | |
6099 | m = MATCH_ERROR; | |
6100 | goto cleanup; | |
6101 | } | |
6102 | ||
63645982 | 6103 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6104 | |
6105 | /* Deal with possible array specification for certain attributes. */ | |
6106 | if (current_attr.dimension | |
be59db2d | 6107 | || current_attr.codimension |
6de9cd9a DN |
6108 | || current_attr.allocatable |
6109 | || current_attr.pointer | |
6110 | || current_attr.target) | |
6111 | { | |
be59db2d TB |
6112 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6113 | !current_attr.dimension | |
6114 | && !current_attr.pointer | |
6115 | && !current_attr.target); | |
6de9cd9a DN |
6116 | if (m == MATCH_ERROR) |
6117 | goto cleanup; | |
6118 | ||
6119 | if (current_attr.dimension && m == MATCH_NO) | |
6120 | { | |
636dff67 SK |
6121 | gfc_error ("Missing array specification at %L in DIMENSION " |
6122 | "statement", &var_locus); | |
6de9cd9a DN |
6123 | m = MATCH_ERROR; |
6124 | goto cleanup; | |
6125 | } | |
6126 | ||
1283ab12 TB |
6127 | if (current_attr.dimension && sym->value) |
6128 | { | |
6129 | gfc_error ("Dimensions specified for %s at %L after its " | |
6130 | "initialisation", sym->name, &var_locus); | |
6131 | m = MATCH_ERROR; | |
6132 | goto cleanup; | |
6133 | } | |
6134 | ||
be59db2d TB |
6135 | if (current_attr.codimension && m == MATCH_NO) |
6136 | { | |
6137 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6138 | "statement", &var_locus); | |
6139 | m = MATCH_ERROR; | |
6140 | goto cleanup; | |
6141 | } | |
6142 | ||
6de9cd9a DN |
6143 | if ((current_attr.allocatable || current_attr.pointer) |
6144 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6145 | { | |
636dff67 | 6146 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6147 | m = MATCH_ERROR; |
6148 | goto cleanup; | |
6149 | } | |
6150 | } | |
6151 | ||
2e23972e JW |
6152 | /* Update symbol table. DIMENSION attribute is set in |
6153 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6154 | to the first component, or '_data' field. */ |
d40477b4 | 6155 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6156 | { |
b04533af | 6157 | if (gfc_copy_attr (&CLASS_DATA (sym)->attr, ¤t_attr, &var_locus) |
7a08eda1 | 6158 | == FAILURE) |
2e23972e JW |
6159 | { |
6160 | m = MATCH_ERROR; | |
6161 | goto cleanup; | |
6162 | } | |
2e23972e JW |
6163 | } |
6164 | else | |
6165 | { | |
be59db2d TB |
6166 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
6167 | && gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus) == FAILURE) | |
2e23972e JW |
6168 | { |
6169 | m = MATCH_ERROR; | |
6170 | goto cleanup; | |
6171 | } | |
6de9cd9a | 6172 | } |
d40477b4 | 6173 | |
528622fd | 6174 | if (sym->ts.type == BT_CLASS |
96d9b22c JW |
6175 | && gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false) == FAILURE) |
6176 | { | |
6177 | m = MATCH_ERROR; | |
6178 | goto cleanup; | |
6179 | } | |
6de9cd9a DN |
6180 | |
6181 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
6182 | { | |
6183 | m = MATCH_ERROR; | |
6184 | goto cleanup; | |
6185 | } | |
d51347f9 | 6186 | |
83d890b9 AL |
6187 | if (sym->attr.cray_pointee && sym->as != NULL) |
6188 | { | |
6189 | /* Fix the array spec. */ | |
6190 | m = gfc_mod_pointee_as (sym->as); | |
6191 | if (m == MATCH_ERROR) | |
6192 | goto cleanup; | |
6193 | } | |
6de9cd9a | 6194 | |
7114edca | 6195 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
1902704e PT |
6196 | { |
6197 | m = MATCH_ERROR; | |
6198 | goto cleanup; | |
6199 | } | |
6200 | ||
6de9cd9a DN |
6201 | if ((current_attr.external || current_attr.intrinsic) |
6202 | && sym->attr.flavor != FL_PROCEDURE | |
231b2fcc | 6203 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6204 | { |
6205 | m = MATCH_ERROR; | |
6206 | goto cleanup; | |
6207 | } | |
6208 | ||
3070bab4 JW |
6209 | add_hidden_procptr_result (sym); |
6210 | ||
6de9cd9a DN |
6211 | return MATCH_YES; |
6212 | ||
6213 | cleanup: | |
6214 | gfc_free_array_spec (as); | |
6215 | return m; | |
6216 | } | |
6217 | ||
6218 | ||
6219 | /* Generic attribute declaration subroutine. Used for attributes that | |
6220 | just have a list of names. */ | |
6221 | ||
6222 | static match | |
6223 | attr_decl (void) | |
6224 | { | |
6225 | match m; | |
6226 | ||
6227 | /* Gobble the optional double colon, by simply ignoring the result | |
6228 | of gfc_match(). */ | |
6229 | gfc_match (" ::"); | |
6230 | ||
6231 | for (;;) | |
6232 | { | |
6233 | m = attr_decl1 (); | |
6234 | if (m != MATCH_YES) | |
6235 | break; | |
6236 | ||
6237 | if (gfc_match_eos () == MATCH_YES) | |
6238 | { | |
6239 | m = MATCH_YES; | |
6240 | break; | |
6241 | } | |
6242 | ||
6243 | if (gfc_match_char (',') != MATCH_YES) | |
6244 | { | |
6245 | gfc_error ("Unexpected character in variable list at %C"); | |
6246 | m = MATCH_ERROR; | |
6247 | break; | |
6248 | } | |
6249 | } | |
6250 | ||
6251 | return m; | |
6252 | } | |
6253 | ||
6254 | ||
83d890b9 AL |
6255 | /* This routine matches Cray Pointer declarations of the form: |
6256 | pointer ( <pointer>, <pointee> ) | |
6257 | or | |
d51347f9 TB |
6258 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6259 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6260 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6261 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6262 | the pointee. For the statement |
83d890b9 AL |
6263 | pointer (ipt, ar(10)) |
6264 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6265 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6266 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6267 | |
6268 | static match | |
6269 | cray_pointer_decl (void) | |
6270 | { | |
6271 | match m; | |
be59db2d | 6272 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6273 | gfc_symbol *cptr; /* Pointer symbol. */ |
6274 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6275 | locus var_locus; | |
6276 | bool done = false; | |
6277 | ||
6278 | while (!done) | |
6279 | { | |
6280 | if (gfc_match_char ('(') != MATCH_YES) | |
6281 | { | |
6282 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 6283 | return MATCH_ERROR; |
83d890b9 | 6284 | } |
d51347f9 | 6285 | |
83d890b9 AL |
6286 | /* Match pointer. */ |
6287 | var_locus = gfc_current_locus; | |
6288 | gfc_clear_attr (¤t_attr); | |
6289 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6290 | current_ts.type = BT_INTEGER; | |
6291 | current_ts.kind = gfc_index_integer_kind; | |
6292 | ||
d51347f9 | 6293 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6294 | if (m != MATCH_YES) |
6295 | { | |
6296 | gfc_error ("Expected variable name at %C"); | |
6297 | return m; | |
6298 | } | |
d51347f9 | 6299 | |
83d890b9 AL |
6300 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
6301 | return MATCH_ERROR; | |
6302 | ||
d51347f9 | 6303 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6304 | |
6305 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6306 | { | |
6307 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6308 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6309 | } |
6310 | else if (cptr->ts.type != BT_INTEGER) | |
6311 | { | |
e25a0da3 | 6312 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6313 | return MATCH_ERROR; |
6314 | } | |
6315 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6316 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 6317 | " memory addresses require %d bytes", |
636dff67 | 6318 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6319 | |
6320 | if (gfc_match_char (',') != MATCH_YES) | |
6321 | { | |
6322 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6323 | return MATCH_ERROR; |
83d890b9 AL |
6324 | } |
6325 | ||
d51347f9 | 6326 | /* Match Pointee. */ |
83d890b9 AL |
6327 | var_locus = gfc_current_locus; |
6328 | gfc_clear_attr (¤t_attr); | |
6329 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6330 | current_ts.type = BT_UNKNOWN; | |
6331 | current_ts.kind = 0; | |
6332 | ||
6333 | m = gfc_match_symbol (&cpte, 0); | |
6334 | if (m != MATCH_YES) | |
6335 | { | |
6336 | gfc_error ("Expected variable name at %C"); | |
6337 | return m; | |
6338 | } | |
d51347f9 | 6339 | |
83d890b9 | 6340 | /* Check for an optional array spec. */ |
be59db2d | 6341 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6342 | if (m == MATCH_ERROR) |
6343 | { | |
6344 | gfc_free_array_spec (as); | |
6345 | return m; | |
6346 | } | |
6347 | else if (m == MATCH_NO) | |
6348 | { | |
6349 | gfc_free_array_spec (as); | |
6350 | as = NULL; | |
6351 | } | |
6352 | ||
6353 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
6354 | return MATCH_ERROR; | |
6355 | ||
6356 | gfc_set_sym_referenced (cpte); | |
6357 | ||
6358 | if (cpte->as == NULL) | |
6359 | { | |
6360 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
6361 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
6362 | } | |
6363 | else if (as != NULL) | |
6364 | { | |
e25a0da3 | 6365 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6366 | gfc_free_array_spec (as); |
6367 | return MATCH_ERROR; | |
6368 | } | |
6369 | ||
6370 | as = NULL; | |
6371 | ||
6372 | if (cpte->as != NULL) | |
6373 | { | |
6374 | /* Fix array spec. */ | |
6375 | m = gfc_mod_pointee_as (cpte->as); | |
6376 | if (m == MATCH_ERROR) | |
6377 | return m; | |
6378 | } | |
6379 | ||
6380 | /* Point the Pointee at the Pointer. */ | |
b122dc6a | 6381 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6382 | |
6383 | if (gfc_match_char (')') != MATCH_YES) | |
6384 | { | |
6385 | gfc_error ("Expected \")\" at %C"); | |
6386 | return MATCH_ERROR; | |
6387 | } | |
6388 | m = gfc_match_char (','); | |
6389 | if (m != MATCH_YES) | |
6390 | done = true; /* Stop searching for more declarations. */ | |
6391 | ||
6392 | } | |
6393 | ||
6394 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
6395 | || gfc_match_eos () != MATCH_YES) | |
6396 | { | |
6397 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6398 | return MATCH_ERROR; | |
6399 | } | |
6400 | return MATCH_YES; | |
6401 | } | |
6402 | ||
6403 | ||
6de9cd9a DN |
6404 | match |
6405 | gfc_match_external (void) | |
6406 | { | |
6407 | ||
6408 | gfc_clear_attr (¤t_attr); | |
1902704e | 6409 | current_attr.external = 1; |
6de9cd9a DN |
6410 | |
6411 | return attr_decl (); | |
6412 | } | |
6413 | ||
6414 | ||
6de9cd9a DN |
6415 | match |
6416 | gfc_match_intent (void) | |
6417 | { | |
6418 | sym_intent intent; | |
6419 | ||
9abe5e56 DK |
6420 | /* This is not allowed within a BLOCK construct! */ |
6421 | if (gfc_current_state () == COMP_BLOCK) | |
6422 | { | |
6423 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6424 | return MATCH_ERROR; | |
6425 | } | |
6426 | ||
6de9cd9a DN |
6427 | intent = match_intent_spec (); |
6428 | if (intent == INTENT_UNKNOWN) | |
6429 | return MATCH_ERROR; | |
6430 | ||
6431 | gfc_clear_attr (¤t_attr); | |
1902704e | 6432 | current_attr.intent = intent; |
6de9cd9a DN |
6433 | |
6434 | return attr_decl (); | |
6435 | } | |
6436 | ||
6437 | ||
6438 | match | |
6439 | gfc_match_intrinsic (void) | |
6440 | { | |
6441 | ||
6442 | gfc_clear_attr (¤t_attr); | |
1902704e | 6443 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6444 | |
6445 | return attr_decl (); | |
6446 | } | |
6447 | ||
6448 | ||
6449 | match | |
6450 | gfc_match_optional (void) | |
6451 | { | |
9abe5e56 DK |
6452 | /* This is not allowed within a BLOCK construct! */ |
6453 | if (gfc_current_state () == COMP_BLOCK) | |
6454 | { | |
6455 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6456 | return MATCH_ERROR; | |
6457 | } | |
6de9cd9a DN |
6458 | |
6459 | gfc_clear_attr (¤t_attr); | |
1902704e | 6460 | current_attr.optional = 1; |
6de9cd9a DN |
6461 | |
6462 | return attr_decl (); | |
6463 | } | |
6464 | ||
6465 | ||
6466 | match | |
6467 | gfc_match_pointer (void) | |
6468 | { | |
83d890b9 | 6469 | gfc_gobble_whitespace (); |
8fc541d3 | 6470 | if (gfc_peek_ascii_char () == '(') |
83d890b9 AL |
6471 | { |
6472 | if (!gfc_option.flag_cray_pointer) | |
6473 | { | |
636dff67 SK |
6474 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6475 | "flag"); | |
83d890b9 AL |
6476 | return MATCH_ERROR; |
6477 | } | |
6478 | return cray_pointer_decl (); | |
6479 | } | |
6480 | else | |
6481 | { | |
6482 | gfc_clear_attr (¤t_attr); | |
1902704e | 6483 | current_attr.pointer = 1; |
83d890b9 AL |
6484 | |
6485 | return attr_decl (); | |
6486 | } | |
6de9cd9a DN |
6487 | } |
6488 | ||
6489 | ||
6490 | match | |
6491 | gfc_match_allocatable (void) | |
6492 | { | |
6de9cd9a | 6493 | gfc_clear_attr (¤t_attr); |
1902704e | 6494 | current_attr.allocatable = 1; |
6de9cd9a DN |
6495 | |
6496 | return attr_decl (); | |
6497 | } | |
6498 | ||
6499 | ||
be59db2d TB |
6500 | match |
6501 | gfc_match_codimension (void) | |
6502 | { | |
6503 | gfc_clear_attr (¤t_attr); | |
6504 | current_attr.codimension = 1; | |
6505 | ||
6506 | return attr_decl (); | |
6507 | } | |
6508 | ||
6509 | ||
fe4e525c TB |
6510 | match |
6511 | gfc_match_contiguous (void) | |
6512 | { | |
6513 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: CONTIGUOUS statement at %C") | |
6514 | == FAILURE) | |
6515 | return MATCH_ERROR; | |
6516 | ||
6517 | gfc_clear_attr (¤t_attr); | |
6518 | current_attr.contiguous = 1; | |
6519 | ||
6520 | return attr_decl (); | |
6521 | } | |
6522 | ||
6523 | ||
6de9cd9a DN |
6524 | match |
6525 | gfc_match_dimension (void) | |
6526 | { | |
6de9cd9a | 6527 | gfc_clear_attr (¤t_attr); |
1902704e | 6528 | current_attr.dimension = 1; |
6de9cd9a DN |
6529 | |
6530 | return attr_decl (); | |
6531 | } | |
6532 | ||
6533 | ||
6534 | match | |
6535 | gfc_match_target (void) | |
6536 | { | |
6de9cd9a | 6537 | gfc_clear_attr (¤t_attr); |
1902704e | 6538 | current_attr.target = 1; |
6de9cd9a DN |
6539 | |
6540 | return attr_decl (); | |
6541 | } | |
6542 | ||
6543 | ||
6544 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6545 | statement. */ | |
6546 | ||
6547 | static match | |
6548 | access_attr_decl (gfc_statement st) | |
6549 | { | |
6550 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6551 | interface_type type; | |
6552 | gfc_user_op *uop; | |
c3f34952 | 6553 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 6554 | gfc_intrinsic_op op; |
6de9cd9a DN |
6555 | match m; |
6556 | ||
6557 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6558 | goto done; | |
6559 | ||
6560 | for (;;) | |
6561 | { | |
a1ee985f | 6562 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
6563 | if (m == MATCH_NO) |
6564 | goto syntax; | |
6565 | if (m == MATCH_ERROR) | |
6566 | return MATCH_ERROR; | |
6567 | ||
6568 | switch (type) | |
6569 | { | |
6570 | case INTERFACE_NAMELESS: | |
9e1d712c | 6571 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
6572 | goto syntax; |
6573 | ||
6574 | case INTERFACE_GENERIC: | |
6575 | if (gfc_get_symbol (name, NULL, &sym)) | |
6576 | goto done; | |
6577 | ||
636dff67 SK |
6578 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
6579 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
231b2fcc | 6580 | sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6581 | return MATCH_ERROR; |
6582 | ||
c3f34952 TB |
6583 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
6584 | && gfc_add_access (&dt_sym->attr, | |
6585 | (st == ST_PUBLIC) ? ACCESS_PUBLIC | |
6586 | : ACCESS_PRIVATE, | |
6587 | sym->name, NULL) == FAILURE) | |
6588 | return MATCH_ERROR; | |
6589 | ||
6de9cd9a DN |
6590 | break; |
6591 | ||
6592 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 6593 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 6594 | { |
fb03a37e TK |
6595 | gfc_intrinsic_op other_op; |
6596 | ||
a1ee985f | 6597 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 6598 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
6599 | |
6600 | /* Handle the case if there is another op with the same | |
6601 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6602 | other_op = gfc_equivalent_op (op); | |
6603 | ||
6604 | if (other_op != INTRINSIC_NONE) | |
6605 | gfc_current_ns->operator_access[other_op] = | |
6606 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6607 | ||
6de9cd9a DN |
6608 | } |
6609 | else | |
6610 | { | |
6611 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 6612 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
6613 | goto done; |
6614 | } | |
6615 | ||
6616 | break; | |
6617 | ||
6618 | case INTERFACE_USER_OP: | |
6619 | uop = gfc_get_uop (name); | |
6620 | ||
6621 | if (uop->access == ACCESS_UNKNOWN) | |
6622 | { | |
636dff67 SK |
6623 | uop->access = (st == ST_PUBLIC) |
6624 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
6625 | } |
6626 | else | |
6627 | { | |
636dff67 SK |
6628 | gfc_error ("Access specification of the .%s. operator at %C " |
6629 | "has already been specified", sym->name); | |
6de9cd9a DN |
6630 | goto done; |
6631 | } | |
6632 | ||
6633 | break; | |
6634 | } | |
6635 | ||
6636 | if (gfc_match_char (',') == MATCH_NO) | |
6637 | break; | |
6638 | } | |
6639 | ||
6640 | if (gfc_match_eos () != MATCH_YES) | |
6641 | goto syntax; | |
6642 | return MATCH_YES; | |
6643 | ||
6644 | syntax: | |
6645 | gfc_syntax_error (st); | |
6646 | ||
6647 | done: | |
6648 | return MATCH_ERROR; | |
6649 | } | |
6650 | ||
6651 | ||
ee7e677f TB |
6652 | match |
6653 | gfc_match_protected (void) | |
6654 | { | |
6655 | gfc_symbol *sym; | |
6656 | match m; | |
6657 | ||
6658 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6659 | { | |
6660 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6661 | "part of a module"); | |
6662 | return MATCH_ERROR; | |
6663 | ||
6664 | } | |
6665 | ||
636dff67 | 6666 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED statement at %C") |
ee7e677f TB |
6667 | == FAILURE) |
6668 | return MATCH_ERROR; | |
6669 | ||
6670 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6671 | { | |
6672 | return MATCH_ERROR; | |
6673 | } | |
6674 | ||
6675 | if (gfc_match_eos () == MATCH_YES) | |
6676 | goto syntax; | |
6677 | ||
6678 | for(;;) | |
6679 | { | |
6680 | m = gfc_match_symbol (&sym, 0); | |
6681 | switch (m) | |
6682 | { | |
6683 | case MATCH_YES: | |
636dff67 SK |
6684 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
6685 | == FAILURE) | |
ee7e677f TB |
6686 | return MATCH_ERROR; |
6687 | goto next_item; | |
6688 | ||
6689 | case MATCH_NO: | |
6690 | break; | |
6691 | ||
6692 | case MATCH_ERROR: | |
6693 | return MATCH_ERROR; | |
6694 | } | |
6695 | ||
6696 | next_item: | |
6697 | if (gfc_match_eos () == MATCH_YES) | |
6698 | break; | |
6699 | if (gfc_match_char (',') != MATCH_YES) | |
6700 | goto syntax; | |
6701 | } | |
6702 | ||
6703 | return MATCH_YES; | |
6704 | ||
6705 | syntax: | |
6706 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6707 | return MATCH_ERROR; | |
6708 | } | |
6709 | ||
6710 | ||
86bf520d | 6711 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 6712 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
6713 | type declaration or a module. */ |
6714 | ||
6715 | match | |
636dff67 | 6716 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
6717 | { |
6718 | ||
6719 | if (gfc_match ("private") != MATCH_YES) | |
6720 | return MATCH_NO; | |
6721 | ||
d51347f9 | 6722 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
6723 | && !(gfc_current_state () == COMP_DERIVED |
6724 | && gfc_state_stack->previous | |
6725 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6726 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6727 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6728 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
6729 | { |
6730 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6731 | "specification part of a module"); | |
6732 | return MATCH_ERROR; | |
6733 | } | |
6734 | ||
6de9cd9a DN |
6735 | if (gfc_current_state () == COMP_DERIVED) |
6736 | { | |
6737 | if (gfc_match_eos () == MATCH_YES) | |
6738 | { | |
6739 | *st = ST_PRIVATE; | |
6740 | return MATCH_YES; | |
6741 | } | |
6742 | ||
6743 | gfc_syntax_error (ST_PRIVATE); | |
6744 | return MATCH_ERROR; | |
6745 | } | |
6746 | ||
6747 | if (gfc_match_eos () == MATCH_YES) | |
6748 | { | |
6749 | *st = ST_PRIVATE; | |
6750 | return MATCH_YES; | |
6751 | } | |
6752 | ||
6753 | *st = ST_ATTR_DECL; | |
6754 | return access_attr_decl (ST_PRIVATE); | |
6755 | } | |
6756 | ||
6757 | ||
6758 | match | |
636dff67 | 6759 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
6760 | { |
6761 | ||
6762 | if (gfc_match ("public") != MATCH_YES) | |
6763 | return MATCH_NO; | |
6764 | ||
d51347f9 TB |
6765 | if (gfc_current_state () != COMP_MODULE) |
6766 | { | |
6767 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6768 | "specification part of a module"); | |
6769 | return MATCH_ERROR; | |
6770 | } | |
6771 | ||
6de9cd9a DN |
6772 | if (gfc_match_eos () == MATCH_YES) |
6773 | { | |
6774 | *st = ST_PUBLIC; | |
6775 | return MATCH_YES; | |
6776 | } | |
6777 | ||
6778 | *st = ST_ATTR_DECL; | |
6779 | return access_attr_decl (ST_PUBLIC); | |
6780 | } | |
6781 | ||
6782 | ||
6783 | /* Workhorse for gfc_match_parameter. */ | |
6784 | ||
6785 | static match | |
6786 | do_parm (void) | |
6787 | { | |
6788 | gfc_symbol *sym; | |
6789 | gfc_expr *init; | |
6790 | match m; | |
7919373d | 6791 | gfc_try t; |
6de9cd9a DN |
6792 | |
6793 | m = gfc_match_symbol (&sym, 0); | |
6794 | if (m == MATCH_NO) | |
6795 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6796 | ||
6797 | if (m != MATCH_YES) | |
6798 | return m; | |
6799 | ||
6800 | if (gfc_match_char ('=') == MATCH_NO) | |
6801 | { | |
6802 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6803 | return MATCH_ERROR; | |
6804 | } | |
6805 | ||
6806 | m = gfc_match_init_expr (&init); | |
6807 | if (m == MATCH_NO) | |
6808 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6809 | if (m != MATCH_YES) | |
6810 | return m; | |
6811 | ||
6812 | if (sym->ts.type == BT_UNKNOWN | |
6813 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
6814 | { | |
6815 | m = MATCH_ERROR; | |
6816 | goto cleanup; | |
6817 | } | |
6818 | ||
6819 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
231b2fcc | 6820 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6821 | { |
6822 | m = MATCH_ERROR; | |
6823 | goto cleanup; | |
6824 | } | |
6825 | ||
1283ab12 TB |
6826 | if (sym->value) |
6827 | { | |
6828 | gfc_error ("Initializing already initialized variable at %C"); | |
6829 | m = MATCH_ERROR; | |
6830 | goto cleanup; | |
6831 | } | |
6832 | ||
7919373d TB |
6833 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
6834 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
6de9cd9a DN |
6835 | |
6836 | cleanup: | |
6837 | gfc_free_expr (init); | |
6838 | return m; | |
6839 | } | |
6840 | ||
6841 | ||
6842 | /* Match a parameter statement, with the weird syntax that these have. */ | |
6843 | ||
6844 | match | |
6845 | gfc_match_parameter (void) | |
6846 | { | |
6847 | match m; | |
6848 | ||
6849 | if (gfc_match_char ('(') == MATCH_NO) | |
6850 | return MATCH_NO; | |
6851 | ||
6852 | for (;;) | |
6853 | { | |
6854 | m = do_parm (); | |
6855 | if (m != MATCH_YES) | |
6856 | break; | |
6857 | ||
6858 | if (gfc_match (" )%t") == MATCH_YES) | |
6859 | break; | |
6860 | ||
6861 | if (gfc_match_char (',') != MATCH_YES) | |
6862 | { | |
6863 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
6864 | m = MATCH_ERROR; | |
6865 | break; | |
6866 | } | |
6867 | } | |
6868 | ||
6869 | return m; | |
6870 | } | |
6871 | ||
6872 | ||
6873 | /* Save statements have a special syntax. */ | |
6874 | ||
6875 | match | |
6876 | gfc_match_save (void) | |
6877 | { | |
9056bd70 TS |
6878 | char n[GFC_MAX_SYMBOL_LEN+1]; |
6879 | gfc_common_head *c; | |
6de9cd9a DN |
6880 | gfc_symbol *sym; |
6881 | match m; | |
6882 | ||
6883 | if (gfc_match_eos () == MATCH_YES) | |
6884 | { | |
6885 | if (gfc_current_ns->seen_save) | |
6886 | { | |
636dff67 SK |
6887 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
6888 | "follows previous SAVE statement") | |
09e87839 AL |
6889 | == FAILURE) |
6890 | return MATCH_ERROR; | |
6de9cd9a DN |
6891 | } |
6892 | ||
6893 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
6894 | return MATCH_YES; | |
6895 | } | |
6896 | ||
6897 | if (gfc_current_ns->save_all) | |
6898 | { | |
636dff67 SK |
6899 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
6900 | "blanket SAVE statement") | |
09e87839 AL |
6901 | == FAILURE) |
6902 | return MATCH_ERROR; | |
6de9cd9a DN |
6903 | } |
6904 | ||
6905 | gfc_match (" ::"); | |
6906 | ||
6907 | for (;;) | |
6908 | { | |
6909 | m = gfc_match_symbol (&sym, 0); | |
6910 | switch (m) | |
6911 | { | |
6912 | case MATCH_YES: | |
80f95228 JW |
6913 | if (gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
6914 | &gfc_current_locus) == FAILURE) | |
6de9cd9a DN |
6915 | return MATCH_ERROR; |
6916 | goto next_item; | |
6917 | ||
6918 | case MATCH_NO: | |
6919 | break; | |
6920 | ||
6921 | case MATCH_ERROR: | |
6922 | return MATCH_ERROR; | |
6923 | } | |
6924 | ||
9056bd70 | 6925 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
6926 | if (m == MATCH_ERROR) |
6927 | return MATCH_ERROR; | |
6928 | if (m == MATCH_NO) | |
6929 | goto syntax; | |
6930 | ||
53814b8f | 6931 | c = gfc_get_common (n, 0); |
9056bd70 TS |
6932 | c->saved = 1; |
6933 | ||
6de9cd9a DN |
6934 | gfc_current_ns->seen_save = 1; |
6935 | ||
6936 | next_item: | |
6937 | if (gfc_match_eos () == MATCH_YES) | |
6938 | break; | |
6939 | if (gfc_match_char (',') != MATCH_YES) | |
6940 | goto syntax; | |
6941 | } | |
6942 | ||
6943 | return MATCH_YES; | |
6944 | ||
6945 | syntax: | |
6946 | gfc_error ("Syntax error in SAVE statement at %C"); | |
6947 | return MATCH_ERROR; | |
6948 | } | |
6949 | ||
6950 | ||
06469efd PT |
6951 | match |
6952 | gfc_match_value (void) | |
6953 | { | |
6954 | gfc_symbol *sym; | |
6955 | match m; | |
6956 | ||
9abe5e56 DK |
6957 | /* This is not allowed within a BLOCK construct! */ |
6958 | if (gfc_current_state () == COMP_BLOCK) | |
6959 | { | |
6960 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
6961 | return MATCH_ERROR; | |
6962 | } | |
6963 | ||
636dff67 | 6964 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE statement at %C") |
06469efd PT |
6965 | == FAILURE) |
6966 | return MATCH_ERROR; | |
6967 | ||
6968 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6969 | { | |
6970 | return MATCH_ERROR; | |
6971 | } | |
6972 | ||
6973 | if (gfc_match_eos () == MATCH_YES) | |
6974 | goto syntax; | |
6975 | ||
6976 | for(;;) | |
6977 | { | |
6978 | m = gfc_match_symbol (&sym, 0); | |
6979 | switch (m) | |
6980 | { | |
6981 | case MATCH_YES: | |
636dff67 SK |
6982 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
6983 | == FAILURE) | |
06469efd PT |
6984 | return MATCH_ERROR; |
6985 | goto next_item; | |
6986 | ||
6987 | case MATCH_NO: | |
6988 | break; | |
6989 | ||
6990 | case MATCH_ERROR: | |
6991 | return MATCH_ERROR; | |
6992 | } | |
6993 | ||
6994 | next_item: | |
6995 | if (gfc_match_eos () == MATCH_YES) | |
6996 | break; | |
6997 | if (gfc_match_char (',') != MATCH_YES) | |
6998 | goto syntax; | |
6999 | } | |
7000 | ||
7001 | return MATCH_YES; | |
7002 | ||
7003 | syntax: | |
7004 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7005 | return MATCH_ERROR; | |
7006 | } | |
7007 | ||
66e4ab31 | 7008 | |
775e6c3a TB |
7009 | match |
7010 | gfc_match_volatile (void) | |
7011 | { | |
7012 | gfc_symbol *sym; | |
7013 | match m; | |
7014 | ||
636dff67 | 7015 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VOLATILE statement at %C") |
775e6c3a TB |
7016 | == FAILURE) |
7017 | return MATCH_ERROR; | |
7018 | ||
7019 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7020 | { | |
7021 | return MATCH_ERROR; | |
7022 | } | |
7023 | ||
7024 | if (gfc_match_eos () == MATCH_YES) | |
7025 | goto syntax; | |
7026 | ||
7027 | for(;;) | |
7028 | { | |
9bce3c1c | 7029 | /* VOLATILE is special because it can be added to host-associated |
be59db2d | 7030 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7031 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7032 | switch (m) |
7033 | { | |
7034 | case MATCH_YES: | |
be59db2d TB |
7035 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7036 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7037 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7038 | { | |
7039 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7040 | "%C, which is use-/host-associated", sym->name); | |
7041 | return MATCH_ERROR; | |
7042 | } | |
636dff67 SK |
7043 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
7044 | == FAILURE) | |
775e6c3a TB |
7045 | return MATCH_ERROR; |
7046 | goto next_item; | |
7047 | ||
7048 | case MATCH_NO: | |
7049 | break; | |
7050 | ||
7051 | case MATCH_ERROR: | |
7052 | return MATCH_ERROR; | |
7053 | } | |
7054 | ||
7055 | next_item: | |
7056 | if (gfc_match_eos () == MATCH_YES) | |
7057 | break; | |
7058 | if (gfc_match_char (',') != MATCH_YES) | |
7059 | goto syntax; | |
7060 | } | |
7061 | ||
7062 | return MATCH_YES; | |
7063 | ||
7064 | syntax: | |
7065 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7066 | return MATCH_ERROR; | |
7067 | } | |
7068 | ||
7069 | ||
1eee5628 TB |
7070 | match |
7071 | gfc_match_asynchronous (void) | |
7072 | { | |
7073 | gfc_symbol *sym; | |
7074 | match m; | |
7075 | ||
7076 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ASYNCHRONOUS statement at %C") | |
7077 | == FAILURE) | |
7078 | return MATCH_ERROR; | |
7079 | ||
7080 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7081 | { | |
7082 | return MATCH_ERROR; | |
7083 | } | |
7084 | ||
7085 | if (gfc_match_eos () == MATCH_YES) | |
7086 | goto syntax; | |
7087 | ||
7088 | for(;;) | |
7089 | { | |
7090 | /* ASYNCHRONOUS is special because it can be added to host-associated | |
7091 | symbols locally. */ | |
7092 | m = gfc_match_symbol (&sym, 1); | |
7093 | switch (m) | |
7094 | { | |
7095 | case MATCH_YES: | |
7096 | if (gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus) | |
7097 | == FAILURE) | |
7098 | return MATCH_ERROR; | |
7099 | goto next_item; | |
7100 | ||
7101 | case MATCH_NO: | |
7102 | break; | |
7103 | ||
7104 | case MATCH_ERROR: | |
7105 | return MATCH_ERROR; | |
7106 | } | |
7107 | ||
7108 | next_item: | |
7109 | if (gfc_match_eos () == MATCH_YES) | |
7110 | break; | |
7111 | if (gfc_match_char (',') != MATCH_YES) | |
7112 | goto syntax; | |
7113 | } | |
7114 | ||
7115 | return MATCH_YES; | |
7116 | ||
7117 | syntax: | |
7118 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7119 | return MATCH_ERROR; | |
7120 | } | |
7121 | ||
7122 | ||
6de9cd9a DN |
7123 | /* Match a module procedure statement. Note that we have to modify |
7124 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7125 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7126 | |
7127 | match | |
7128 | gfc_match_modproc (void) | |
7129 | { | |
7130 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7131 | gfc_symbol *sym; | |
7132 | match m; | |
162b5a21 | 7133 | locus old_locus; |
060fca4a | 7134 | gfc_namespace *module_ns; |
2b77e908 | 7135 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7136 | |
7137 | if (gfc_state_stack->state != COMP_INTERFACE | |
7138 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7139 | || current_interface.type == INTERFACE_NAMELESS |
7140 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7141 | { |
636dff67 SK |
7142 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7143 | "interface"); | |
6de9cd9a DN |
7144 | return MATCH_ERROR; |
7145 | } | |
7146 | ||
060fca4a PT |
7147 | module_ns = gfc_current_ns->parent; |
7148 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7149 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7150 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7151 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7152 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7153 | break; |
7154 | ||
7155 | if (module_ns == NULL) | |
7156 | return MATCH_ERROR; | |
7157 | ||
2b77e908 FXC |
7158 | /* Store the current state of the interface. We will need it if we |
7159 | end up with a syntax error and need to recover. */ | |
7160 | old_interface_head = gfc_current_interface_head (); | |
7161 | ||
162b5a21 SK |
7162 | /* Check if the F2008 optional double colon appears. */ |
7163 | gfc_gobble_whitespace (); | |
7164 | old_locus = gfc_current_locus; | |
7165 | if (gfc_match ("::") == MATCH_YES) | |
7166 | { | |
7167 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: double colon in " | |
7168 | "MODULE PROCEDURE statement at %L", &old_locus) | |
7169 | == FAILURE) | |
7170 | return MATCH_ERROR; | |
7171 | } | |
7172 | else | |
7173 | gfc_current_locus = old_locus; | |
7174 | ||
6de9cd9a DN |
7175 | for (;;) |
7176 | { | |
2b77e908 | 7177 | bool last = false; |
162b5a21 | 7178 | old_locus = gfc_current_locus; |
2b77e908 | 7179 | |
6de9cd9a DN |
7180 | m = gfc_match_name (name); |
7181 | if (m == MATCH_NO) | |
7182 | goto syntax; | |
7183 | if (m != MATCH_YES) | |
7184 | return MATCH_ERROR; | |
7185 | ||
2b77e908 FXC |
7186 | /* Check for syntax error before starting to add symbols to the |
7187 | current namespace. */ | |
7188 | if (gfc_match_eos () == MATCH_YES) | |
7189 | last = true; | |
162b5a21 | 7190 | |
2b77e908 FXC |
7191 | if (!last && gfc_match_char (',') != MATCH_YES) |
7192 | goto syntax; | |
7193 | ||
7194 | /* Now we're sure the syntax is valid, we process this item | |
7195 | further. */ | |
060fca4a | 7196 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7197 | return MATCH_ERROR; |
7198 | ||
43dfd40c SK |
7199 | if (sym->attr.intrinsic) |
7200 | { | |
7201 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7202 | "PROCEDURE", &old_locus); | |
7203 | return MATCH_ERROR; | |
7204 | } | |
7205 | ||
6de9cd9a | 7206 | if (sym->attr.proc != PROC_MODULE |
231b2fcc TS |
7207 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
7208 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
7209 | return MATCH_ERROR; |
7210 | ||
7211 | if (gfc_add_interface (sym) == FAILURE) | |
7212 | return MATCH_ERROR; | |
7213 | ||
71f77fd7 | 7214 | sym->attr.mod_proc = 1; |
43dfd40c | 7215 | sym->declared_at = old_locus; |
71f77fd7 | 7216 | |
2b77e908 | 7217 | if (last) |
6de9cd9a | 7218 | break; |
6de9cd9a DN |
7219 | } |
7220 | ||
7221 | return MATCH_YES; | |
7222 | ||
7223 | syntax: | |
2b77e908 FXC |
7224 | /* Restore the previous state of the interface. */ |
7225 | interface = gfc_current_interface_head (); | |
7226 | gfc_set_current_interface_head (old_interface_head); | |
7227 | ||
7228 | /* Free the new interfaces. */ | |
7229 | while (interface != old_interface_head) | |
7230 | { | |
7231 | gfc_interface *i = interface->next; | |
cede9502 | 7232 | free (interface); |
2b77e908 FXC |
7233 | interface = i; |
7234 | } | |
7235 | ||
7236 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7237 | gfc_syntax_error (ST_MODULE_PROC); |
7238 | return MATCH_ERROR; | |
7239 | } | |
7240 | ||
7241 | ||
7d1f1e61 PT |
7242 | /* Check a derived type that is being extended. */ |
7243 | static gfc_symbol* | |
7244 | check_extended_derived_type (char *name) | |
7245 | { | |
7246 | gfc_symbol *extended; | |
7247 | ||
7248 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7249 | { | |
7250 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7251 | return NULL; | |
7252 | } | |
7253 | ||
7254 | if (!extended) | |
7255 | { | |
7256 | gfc_error ("No such symbol in TYPE definition at %C"); | |
7257 | return NULL; | |
7258 | } | |
7259 | ||
c3f34952 TB |
7260 | extended = gfc_find_dt_in_generic (extended); |
7261 | ||
7d1f1e61 PT |
7262 | if (extended->attr.flavor != FL_DERIVED) |
7263 | { | |
7264 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7265 | "derived type", name); | |
7266 | return NULL; | |
7267 | } | |
7268 | ||
7269 | if (extended->attr.is_bind_c) | |
7270 | { | |
7271 | gfc_error ("'%s' cannot be extended at %C because it " | |
7272 | "is BIND(C)", extended->name); | |
7273 | return NULL; | |
7274 | } | |
7275 | ||
7276 | if (extended->attr.sequence) | |
7277 | { | |
7278 | gfc_error ("'%s' cannot be extended at %C because it " | |
7279 | "is a SEQUENCE type", extended->name); | |
7280 | return NULL; | |
7281 | } | |
7282 | ||
7283 | return extended; | |
7284 | } | |
7285 | ||
7286 | ||
a8b3b0b6 CR |
7287 | /* Match the optional attribute specifiers for a type declaration. |
7288 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7289 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7290 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7291 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7292 | |
7293 | match | |
7d1f1e61 | 7294 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7295 | { |
a8b3b0b6 | 7296 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7297 | if (gfc_match (" , private") == MATCH_YES) |
7298 | { | |
d51347f9 | 7299 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7300 | { |
d51347f9 TB |
7301 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7302 | "specification part of a module"); | |
6de9cd9a DN |
7303 | return MATCH_ERROR; |
7304 | } | |
7305 | ||
a8b3b0b6 | 7306 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
6de9cd9a | 7307 | return MATCH_ERROR; |
6de9cd9a | 7308 | } |
a8b3b0b6 | 7309 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7310 | { |
d51347f9 | 7311 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7312 | { |
d51347f9 TB |
7313 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7314 | "specification part of a module"); | |
6de9cd9a DN |
7315 | return MATCH_ERROR; |
7316 | } | |
7317 | ||
a8b3b0b6 | 7318 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
6de9cd9a | 7319 | return MATCH_ERROR; |
6de9cd9a | 7320 | } |
52f49934 | 7321 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7322 | { |
7323 | /* If the type is defined to be bind(c) it then needs to make | |
7324 | sure that all fields are interoperable. This will | |
7325 | need to be a semantic check on the finished derived type. | |
7326 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
7327 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
7328 | return MATCH_ERROR; | |
7329 | ||
7330 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7331 | } | |
52f49934 DK |
7332 | else if (gfc_match (" , abstract") == MATCH_YES) |
7333 | { | |
7334 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ABSTRACT type at %C") | |
7335 | == FAILURE) | |
7336 | return MATCH_ERROR; | |
7337 | ||
7338 | if (gfc_add_abstract (attr, &gfc_current_locus) == FAILURE) | |
7339 | return MATCH_ERROR; | |
7340 | } | |
7d1f1e61 PT |
7341 | else if (name && gfc_match(" , extends ( %n )", name) == MATCH_YES) |
7342 | { | |
63a3341a | 7343 | if (gfc_add_extension (attr, &gfc_current_locus) == FAILURE) |
7d1f1e61 PT |
7344 | return MATCH_ERROR; |
7345 | } | |
a8b3b0b6 CR |
7346 | else |
7347 | return MATCH_NO; | |
7348 | ||
7349 | /* If we get here, something matched. */ | |
7350 | return MATCH_YES; | |
7351 | } | |
7352 | ||
7353 | ||
7354 | /* Match the beginning of a derived type declaration. If a type name | |
7355 | was the result of a function, then it is possible to have a symbol | |
7356 | already to be known as a derived type yet have no components. */ | |
7357 | ||
7358 | match | |
7359 | gfc_match_derived_decl (void) | |
7360 | { | |
7361 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7362 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7363 | symbol_attribute attr; |
c3f34952 | 7364 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7365 | gfc_symbol *extended; |
a8b3b0b6 CR |
7366 | match m; |
7367 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7368 | bool seen_attr = false; |
c3f34952 | 7369 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7370 | |
7371 | if (gfc_current_state () == COMP_DERIVED) | |
7372 | return MATCH_NO; | |
7373 | ||
7d1f1e61 PT |
7374 | name[0] = '\0'; |
7375 | parent[0] = '\0'; | |
a8b3b0b6 | 7376 | gfc_clear_attr (&attr); |
7d1f1e61 | 7377 | extended = NULL; |
a8b3b0b6 CR |
7378 | |
7379 | do | |
7380 | { | |
7d1f1e61 | 7381 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7382 | if (is_type_attr_spec == MATCH_ERROR) |
7383 | return MATCH_ERROR; | |
e7303e85 FXC |
7384 | if (is_type_attr_spec == MATCH_YES) |
7385 | seen_attr = true; | |
a8b3b0b6 | 7386 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7387 | |
63a3341a PT |
7388 | /* Deal with derived type extensions. The extension attribute has |
7389 | been added to 'attr' but now the parent type must be found and | |
7390 | checked. */ | |
7d1f1e61 PT |
7391 | if (parent[0]) |
7392 | extended = check_extended_derived_type (parent); | |
7393 | ||
7394 | if (parent[0] && !extended) | |
7395 | return MATCH_ERROR; | |
7396 | ||
e7303e85 | 7397 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7398 | { |
7399 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7400 | return MATCH_ERROR; | |
7401 | } | |
7402 | ||
7403 | m = gfc_match (" %n%t", name); | |
7404 | if (m != MATCH_YES) | |
7405 | return m; | |
7406 | ||
e9c06563 TB |
7407 | /* Make sure the name is not the name of an intrinsic type. */ |
7408 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7409 | { |
636dff67 SK |
7410 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7411 | "type", name); | |
6de9cd9a DN |
7412 | return MATCH_ERROR; |
7413 | } | |
7414 | ||
c3f34952 | 7415 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
7416 | return MATCH_ERROR; |
7417 | ||
c3f34952 | 7418 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a DN |
7419 | { |
7420 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c3f34952 TB |
7421 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7422 | return MATCH_ERROR; | |
7423 | } | |
7424 | ||
7425 | if (!gensym->attr.generic | |
7426 | && gfc_add_generic (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7427 | return MATCH_ERROR; | |
7428 | ||
7429 | if (!gensym->attr.function | |
7430 | && gfc_add_function (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7431 | return MATCH_ERROR; | |
7432 | ||
7433 | sym = gfc_find_dt_in_generic (gensym); | |
7434 | ||
7435 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7436 | { | |
7437 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7438 | "defined", sym->name); | |
6de9cd9a DN |
7439 | return MATCH_ERROR; |
7440 | } | |
7441 | ||
c3f34952 TB |
7442 | if (!sym) |
7443 | { | |
7444 | /* Use upper case to save the actual derived-type symbol. */ | |
7445 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7446 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7447 | &gensym->name[1]), NULL, &sym); | |
7448 | sym->name = gfc_get_string (gensym->name); | |
7449 | head = gensym->generic; | |
7450 | intr = gfc_get_interface (); | |
7451 | intr->sym = sym; | |
7452 | intr->where = gfc_current_locus; | |
7453 | intr->sym->declared_at = gfc_current_locus; | |
7454 | intr->next = head; | |
7455 | gensym->generic = intr; | |
7456 | gensym->attr.if_source = IFSRC_DECL; | |
7457 | } | |
7458 | ||
6de9cd9a DN |
7459 | /* The symbol may already have the derived attribute without the |
7460 | components. The ways this can happen is via a function | |
7461 | definition, an INTRINSIC statement or a subtype in another | |
7462 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 7463 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 7464 | if (sym->attr.flavor != FL_DERIVED |
231b2fcc | 7465 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
7466 | return MATCH_ERROR; |
7467 | ||
6de9cd9a | 7468 | if (attr.access != ACCESS_UNKNOWN |
231b2fcc | 7469 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
6de9cd9a | 7470 | return MATCH_ERROR; |
c3f34952 TB |
7471 | else if (sym->attr.access == ACCESS_UNKNOWN |
7472 | && gensym->attr.access != ACCESS_UNKNOWN | |
7473 | && gfc_add_access (&sym->attr, gensym->attr.access, sym->name, NULL) | |
7474 | == FAILURE) | |
7475 | return MATCH_ERROR; | |
7476 | ||
7477 | if (sym->attr.access != ACCESS_UNKNOWN | |
7478 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7479 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 7480 | |
a8b3b0b6 CR |
7481 | /* See if the derived type was labeled as bind(c). */ |
7482 | if (attr.is_bind_c != 0) | |
7483 | sym->attr.is_bind_c = attr.is_bind_c; | |
7484 | ||
34523524 DK |
7485 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7486 | if (!sym->f2k_derived) | |
7487 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
7488 | |
7489 | if (extended && !sym->components) | |
7490 | { | |
7491 | gfc_component *p; | |
7492 | gfc_symtree *st; | |
7493 | ||
7494 | /* Add the extended derived type as the first component. */ | |
7495 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
7496 | extended->refs++; |
7497 | gfc_set_sym_referenced (extended); | |
7498 | ||
7499 | p->ts.type = BT_DERIVED; | |
bc21d315 | 7500 | p->ts.u.derived = extended; |
7d1f1e61 | 7501 | p->initializer = gfc_default_initializer (&p->ts); |
7c1dab0d JW |
7502 | |
7503 | /* Set extension level. */ | |
7504 | if (extended->attr.extension == 255) | |
7505 | { | |
7506 | /* Since the extension field is 8 bit wide, we can only have | |
7507 | up to 255 extension levels. */ | |
7508 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7509 | extended->name, &extended->declared_at); | |
7510 | return MATCH_ERROR; | |
7511 | } | |
7512 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
7513 | |
7514 | /* Provide the links between the extended type and its extension. */ | |
7515 | if (!extended->f2k_derived) | |
7516 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7517 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7518 | st->n.sym = sym; | |
7519 | } | |
7520 | ||
7c1dab0d JW |
7521 | if (!sym->hash_value) |
7522 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 7523 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 7524 | |
52f49934 DK |
7525 | /* Take over the ABSTRACT attribute. */ |
7526 | sym->attr.abstract = attr.abstract; | |
7527 | ||
6de9cd9a DN |
7528 | gfc_new_block = sym; |
7529 | ||
7530 | return MATCH_YES; | |
7531 | } | |
83d890b9 AL |
7532 | |
7533 | ||
7534 | /* Cray Pointees can be declared as: | |
b3aefde2 | 7535 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 7536 | |
32e8bb8e | 7537 | match |
83d890b9 AL |
7538 | gfc_mod_pointee_as (gfc_array_spec *as) |
7539 | { | |
7540 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7541 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 7542 | as->cp_was_assumed = true; |
83d890b9 AL |
7543 | else if (as->type == AS_ASSUMED_SHAPE) |
7544 | { | |
7545 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7546 | return MATCH_ERROR; | |
7547 | } | |
7548 | return MATCH_YES; | |
7549 | } | |
25d8f0a2 TS |
7550 | |
7551 | ||
7552 | /* Match the enum definition statement, here we are trying to match | |
7553 | the first line of enum definition statement. | |
7554 | Returns MATCH_YES if match is found. */ | |
7555 | ||
7556 | match | |
7557 | gfc_match_enum (void) | |
7558 | { | |
7559 | match m; | |
7560 | ||
7561 | m = gfc_match_eos (); | |
7562 | if (m != MATCH_YES) | |
7563 | return m; | |
7564 | ||
6133c68a | 7565 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ENUM and ENUMERATOR at %C") |
25d8f0a2 TS |
7566 | == FAILURE) |
7567 | return MATCH_ERROR; | |
7568 | ||
7569 | return MATCH_YES; | |
7570 | } | |
7571 | ||
7572 | ||
31224396 SK |
7573 | /* Returns an initializer whose value is one higher than the value of the |
7574 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7575 | initializers value will be set to zero. The initializer's kind | |
7576 | will be set to gfc_c_int_kind. | |
7577 | ||
7578 | If -fshort-enums is given, the appropriate kind will be selected | |
7579 | later after all enumerators have been parsed. A warning is issued | |
7580 | here if an initializer exceeds gfc_c_int_kind. */ | |
7581 | ||
7582 | static gfc_expr * | |
7583 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7584 | { | |
7585 | gfc_expr *result; | |
b7e75771 | 7586 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
7587 | |
7588 | mpz_init (result->value.integer); | |
7589 | ||
7590 | if (last_initializer != NULL) | |
7591 | { | |
7592 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7593 | result->where = last_initializer->where; | |
7594 | ||
7595 | if (gfc_check_integer_range (result->value.integer, | |
7596 | gfc_c_int_kind) != ARITH_OK) | |
7597 | { | |
7598 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7599 | return NULL; | |
7600 | } | |
7601 | } | |
7602 | else | |
7603 | { | |
7604 | /* Control comes here, if it's the very first enumerator and no | |
7605 | initializer has been given. It will be initialized to zero. */ | |
7606 | mpz_set_si (result->value.integer, 0); | |
7607 | } | |
7608 | ||
7609 | return result; | |
7610 | } | |
7611 | ||
7612 | ||
6133c68a TS |
7613 | /* Match a variable name with an optional initializer. When this |
7614 | subroutine is called, a variable is expected to be parsed next. | |
7615 | Depending on what is happening at the moment, updates either the | |
7616 | symbol table or the current interface. */ | |
7617 | ||
7618 | static match | |
7619 | enumerator_decl (void) | |
7620 | { | |
7621 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7622 | gfc_expr *initializer; | |
7623 | gfc_array_spec *as = NULL; | |
7624 | gfc_symbol *sym; | |
7625 | locus var_locus; | |
7626 | match m; | |
17b1d2a0 | 7627 | gfc_try t; |
6133c68a TS |
7628 | locus old_locus; |
7629 | ||
7630 | initializer = NULL; | |
7631 | old_locus = gfc_current_locus; | |
7632 | ||
7633 | /* When we get here, we've just matched a list of attributes and | |
7634 | maybe a type and a double colon. The next thing we expect to see | |
7635 | is the name of the symbol. */ | |
7636 | m = gfc_match_name (name); | |
7637 | if (m != MATCH_YES) | |
7638 | goto cleanup; | |
7639 | ||
7640 | var_locus = gfc_current_locus; | |
7641 | ||
7642 | /* OK, we've successfully matched the declaration. Now put the | |
7643 | symbol in the current namespace. If we fail to create the symbol, | |
7644 | bail out. */ | |
e69afb29 | 7645 | if (build_sym (name, NULL, false, &as, &var_locus) == FAILURE) |
6133c68a TS |
7646 | { |
7647 | m = MATCH_ERROR; | |
7648 | goto cleanup; | |
7649 | } | |
7650 | ||
7651 | /* The double colon must be present in order to have initializers. | |
7652 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7653 | if (colon_seen) | |
7654 | { | |
7655 | if (gfc_match_char ('=') == MATCH_YES) | |
7656 | { | |
7657 | m = gfc_match_init_expr (&initializer); | |
7658 | if (m == MATCH_NO) | |
7659 | { | |
7660 | gfc_error ("Expected an initialization expression at %C"); | |
7661 | m = MATCH_ERROR; | |
7662 | } | |
7663 | ||
7664 | if (m != MATCH_YES) | |
7665 | goto cleanup; | |
7666 | } | |
7667 | } | |
7668 | ||
7669 | /* If we do not have an initializer, the initialization value of the | |
7670 | previous enumerator (stored in last_initializer) is incremented | |
7671 | by 1 and is used to initialize the current enumerator. */ | |
7672 | if (initializer == NULL) | |
31224396 | 7673 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 7674 | |
6133c68a TS |
7675 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7676 | { | |
01e64c3d JJ |
7677 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7678 | &var_locus); | |
d51347f9 | 7679 | m = MATCH_ERROR; |
6133c68a TS |
7680 | goto cleanup; |
7681 | } | |
7682 | ||
7683 | /* Store this current initializer, for the next enumerator variable | |
7684 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7685 | use last_initializer below. */ | |
7686 | last_initializer = initializer; | |
7687 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7688 | ||
7689 | /* Maintain enumerator history. */ | |
7690 | gfc_find_symbol (name, NULL, 0, &sym); | |
7691 | create_enum_history (sym, last_initializer); | |
7692 | ||
7693 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
7694 | ||
7695 | cleanup: | |
7696 | /* Free stuff up and return. */ | |
7697 | gfc_free_expr (initializer); | |
7698 | ||
7699 | return m; | |
7700 | } | |
7701 | ||
7702 | ||
66e4ab31 | 7703 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
7704 | |
7705 | match | |
7706 | gfc_match_enumerator_def (void) | |
7707 | { | |
7708 | match m; | |
17b1d2a0 | 7709 | gfc_try t; |
d51347f9 | 7710 | |
25d8f0a2 | 7711 | gfc_clear_ts (¤t_ts); |
d51347f9 | 7712 | |
25d8f0a2 TS |
7713 | m = gfc_match (" enumerator"); |
7714 | if (m != MATCH_YES) | |
7715 | return m; | |
6133c68a TS |
7716 | |
7717 | m = gfc_match (" :: "); | |
7718 | if (m == MATCH_ERROR) | |
7719 | return m; | |
7720 | ||
7721 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 7722 | |
25d8f0a2 TS |
7723 | if (gfc_current_state () != COMP_ENUM) |
7724 | { | |
7725 | gfc_error ("ENUM definition statement expected before %C"); | |
7726 | gfc_free_enum_history (); | |
7727 | return MATCH_ERROR; | |
7728 | } | |
7729 | ||
7730 | (¤t_ts)->type = BT_INTEGER; | |
7731 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 7732 | |
6133c68a TS |
7733 | gfc_clear_attr (¤t_attr); |
7734 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
7735 | if (t == FAILURE) | |
25d8f0a2 | 7736 | { |
6133c68a | 7737 | m = MATCH_ERROR; |
25d8f0a2 TS |
7738 | goto cleanup; |
7739 | } | |
7740 | ||
25d8f0a2 TS |
7741 | for (;;) |
7742 | { | |
6133c68a | 7743 | m = enumerator_decl (); |
25d8f0a2 | 7744 | if (m == MATCH_ERROR) |
01e64c3d JJ |
7745 | { |
7746 | gfc_free_enum_history (); | |
7747 | goto cleanup; | |
7748 | } | |
25d8f0a2 TS |
7749 | if (m == MATCH_NO) |
7750 | break; | |
7751 | ||
7752 | if (gfc_match_eos () == MATCH_YES) | |
7753 | goto cleanup; | |
7754 | if (gfc_match_char (',') != MATCH_YES) | |
7755 | break; | |
7756 | } | |
7757 | ||
7758 | if (gfc_current_state () == COMP_ENUM) | |
7759 | { | |
7760 | gfc_free_enum_history (); | |
7761 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7762 | m = MATCH_ERROR; | |
7763 | } | |
7764 | ||
7765 | cleanup: | |
7766 | gfc_free_array_spec (current_as); | |
7767 | current_as = NULL; | |
7768 | return m; | |
7769 | ||
7770 | } | |
7771 | ||
f6fad28e | 7772 | |
30b608eb DK |
7773 | /* Match binding attributes. */ |
7774 | ||
7775 | static match | |
713485cc | 7776 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
7777 | { |
7778 | bool found_passing = false; | |
713485cc | 7779 | bool seen_ptr = false; |
90661f26 | 7780 | match m = MATCH_YES; |
30b608eb DK |
7781 | |
7782 | /* Intialize to defaults. Do so even before the MATCH_NO check so that in | |
7783 | this case the defaults are in there. */ | |
7784 | ba->access = ACCESS_UNKNOWN; | |
7785 | ba->pass_arg = NULL; | |
7786 | ba->pass_arg_num = 0; | |
7787 | ba->nopass = 0; | |
7788 | ba->non_overridable = 0; | |
b0e5fa94 | 7789 | ba->deferred = 0; |
90661f26 | 7790 | ba->ppc = ppc; |
30b608eb DK |
7791 | |
7792 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
7793 | m = gfc_match_char (','); |
7794 | if (m == MATCH_NO) | |
7795 | goto done; | |
30b608eb DK |
7796 | |
7797 | do | |
7798 | { | |
e157f736 DK |
7799 | /* Access specifier. */ |
7800 | ||
7801 | m = gfc_match (" public"); | |
30b608eb DK |
7802 | if (m == MATCH_ERROR) |
7803 | goto error; | |
7804 | if (m == MATCH_YES) | |
7805 | { | |
e157f736 | 7806 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7807 | { |
e157f736 | 7808 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7809 | goto error; |
7810 | } | |
7811 | ||
e157f736 | 7812 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
7813 | continue; |
7814 | } | |
7815 | ||
e157f736 | 7816 | m = gfc_match (" private"); |
30b608eb DK |
7817 | if (m == MATCH_ERROR) |
7818 | goto error; | |
7819 | if (m == MATCH_YES) | |
7820 | { | |
e157f736 | 7821 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7822 | { |
e157f736 | 7823 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7824 | goto error; |
7825 | } | |
7826 | ||
e157f736 | 7827 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
7828 | continue; |
7829 | } | |
7830 | ||
e157f736 DK |
7831 | /* If inside GENERIC, the following is not allowed. */ |
7832 | if (!generic) | |
30b608eb | 7833 | { |
30b608eb | 7834 | |
e157f736 DK |
7835 | /* NOPASS flag. */ |
7836 | m = gfc_match (" nopass"); | |
7837 | if (m == MATCH_ERROR) | |
7838 | goto error; | |
7839 | if (m == MATCH_YES) | |
30b608eb | 7840 | { |
e157f736 DK |
7841 | if (found_passing) |
7842 | { | |
7843 | gfc_error ("Binding attributes already specify passing," | |
7844 | " illegal NOPASS at %C"); | |
7845 | goto error; | |
7846 | } | |
7847 | ||
7848 | found_passing = true; | |
7849 | ba->nopass = 1; | |
7850 | continue; | |
30b608eb DK |
7851 | } |
7852 | ||
e157f736 DK |
7853 | /* PASS possibly including argument. */ |
7854 | m = gfc_match (" pass"); | |
7855 | if (m == MATCH_ERROR) | |
7856 | goto error; | |
7857 | if (m == MATCH_YES) | |
30b608eb | 7858 | { |
e157f736 DK |
7859 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
7860 | ||
7861 | if (found_passing) | |
7862 | { | |
7863 | gfc_error ("Binding attributes already specify passing," | |
7864 | " illegal PASS at %C"); | |
7865 | goto error; | |
7866 | } | |
7867 | ||
7868 | m = gfc_match (" ( %n )", arg); | |
7869 | if (m == MATCH_ERROR) | |
7870 | goto error; | |
7871 | if (m == MATCH_YES) | |
90661f26 | 7872 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
7873 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
7874 | ||
7875 | found_passing = true; | |
7876 | ba->nopass = 0; | |
7877 | continue; | |
30b608eb DK |
7878 | } |
7879 | ||
713485cc JW |
7880 | if (ppc) |
7881 | { | |
7882 | /* POINTER flag. */ | |
7883 | m = gfc_match (" pointer"); | |
7884 | if (m == MATCH_ERROR) | |
7885 | goto error; | |
7886 | if (m == MATCH_YES) | |
7887 | { | |
7888 | if (seen_ptr) | |
7889 | { | |
7890 | gfc_error ("Duplicate POINTER attribute at %C"); | |
7891 | goto error; | |
7892 | } | |
7893 | ||
7894 | seen_ptr = true; | |
713485cc JW |
7895 | continue; |
7896 | } | |
7897 | } | |
7898 | else | |
7899 | { | |
7900 | /* NON_OVERRIDABLE flag. */ | |
7901 | m = gfc_match (" non_overridable"); | |
7902 | if (m == MATCH_ERROR) | |
7903 | goto error; | |
7904 | if (m == MATCH_YES) | |
7905 | { | |
7906 | if (ba->non_overridable) | |
7907 | { | |
7908 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
7909 | goto error; | |
7910 | } | |
7911 | ||
7912 | ba->non_overridable = 1; | |
7913 | continue; | |
7914 | } | |
7915 | ||
7916 | /* DEFERRED flag. */ | |
7917 | m = gfc_match (" deferred"); | |
7918 | if (m == MATCH_ERROR) | |
7919 | goto error; | |
7920 | if (m == MATCH_YES) | |
7921 | { | |
7922 | if (ba->deferred) | |
7923 | { | |
7924 | gfc_error ("Duplicate DEFERRED at %C"); | |
7925 | goto error; | |
7926 | } | |
7927 | ||
7928 | ba->deferred = 1; | |
7929 | continue; | |
7930 | } | |
7931 | } | |
7932 | ||
30b608eb DK |
7933 | } |
7934 | ||
7935 | /* Nothing matching found. */ | |
e157f736 DK |
7936 | if (generic) |
7937 | gfc_error ("Expected access-specifier at %C"); | |
7938 | else | |
7939 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
7940 | goto error; |
7941 | } | |
7942 | while (gfc_match_char (',') == MATCH_YES); | |
7943 | ||
b0e5fa94 DK |
7944 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
7945 | if (ba->non_overridable && ba->deferred) | |
7946 | { | |
7947 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
7948 | goto error; | |
7949 | } | |
7950 | ||
90661f26 JW |
7951 | m = MATCH_YES; |
7952 | ||
7953 | done: | |
e157f736 DK |
7954 | if (ba->access == ACCESS_UNKNOWN) |
7955 | ba->access = gfc_typebound_default_access; | |
7956 | ||
713485cc JW |
7957 | if (ppc && !seen_ptr) |
7958 | { | |
7959 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
7960 | " at %C"); | |
7961 | goto error; | |
7962 | } | |
7963 | ||
90661f26 | 7964 | return m; |
30b608eb DK |
7965 | |
7966 | error: | |
30b608eb DK |
7967 | return MATCH_ERROR; |
7968 | } | |
7969 | ||
7970 | ||
7971 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
7972 | ||
7973 | static match | |
7974 | match_procedure_in_type (void) | |
7975 | { | |
7976 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7977 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 7978 | char* target = NULL, *ifc = NULL; |
3e15518b | 7979 | gfc_typebound_proc tb; |
30b608eb DK |
7980 | bool seen_colons; |
7981 | bool seen_attrs; | |
7982 | match m; | |
7983 | gfc_symtree* stree; | |
7984 | gfc_namespace* ns; | |
7985 | gfc_symbol* block; | |
1be17993 | 7986 | int num; |
30b608eb DK |
7987 | |
7988 | /* Check current state. */ | |
7989 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
7990 | block = gfc_state_stack->previous->sym; | |
7991 | gcc_assert (block); | |
7992 | ||
b0e5fa94 | 7993 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
7994 | if (gfc_match (" (") == MATCH_YES) |
7995 | { | |
b0e5fa94 DK |
7996 | m = gfc_match_name (target_buf); |
7997 | if (m == MATCH_ERROR) | |
7998 | return m; | |
7999 | if (m != MATCH_YES) | |
8000 | { | |
8001 | gfc_error ("Interface-name expected after '(' at %C"); | |
8002 | return MATCH_ERROR; | |
8003 | } | |
8004 | ||
8005 | if (gfc_match (" )") != MATCH_YES) | |
8006 | { | |
8007 | gfc_error ("')' expected at %C"); | |
8008 | return MATCH_ERROR; | |
8009 | } | |
8010 | ||
1be17993 | 8011 | ifc = target_buf; |
30b608eb DK |
8012 | } |
8013 | ||
8014 | /* Construct the data structure. */ | |
ff5b6492 | 8015 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8016 | tb.where = gfc_current_locus; |
30b608eb DK |
8017 | |
8018 | /* Match binding attributes. */ | |
3e15518b | 8019 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8020 | if (m == MATCH_ERROR) |
8021 | return m; | |
8022 | seen_attrs = (m == MATCH_YES); | |
8023 | ||
1be17993 | 8024 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8025 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8026 | { |
8027 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8028 | return MATCH_ERROR; | |
8029 | } | |
3e15518b | 8030 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8031 | { |
8032 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8033 | return MATCH_ERROR; | |
8034 | } | |
8035 | ||
30b608eb DK |
8036 | /* Match the colons. */ |
8037 | m = gfc_match (" ::"); | |
8038 | if (m == MATCH_ERROR) | |
8039 | return m; | |
8040 | seen_colons = (m == MATCH_YES); | |
8041 | if (seen_attrs && !seen_colons) | |
8042 | { | |
8043 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8044 | return MATCH_ERROR; | |
8045 | } | |
8046 | ||
1be17993 JW |
8047 | /* Match the binding names. */ |
8048 | for(num=1;;num++) | |
30b608eb | 8049 | { |
1be17993 JW |
8050 | m = gfc_match_name (name); |
8051 | if (m == MATCH_ERROR) | |
8052 | return m; | |
8053 | if (m == MATCH_NO) | |
b0e5fa94 | 8054 | { |
1be17993 | 8055 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8056 | return MATCH_ERROR; |
8057 | } | |
8058 | ||
1be17993 JW |
8059 | if (num>1 && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: PROCEDURE list" |
8060 | " at %C") == FAILURE) | |
8061 | return MATCH_ERROR; | |
30b608eb | 8062 | |
1be17993 JW |
8063 | /* Try to match the '=> target', if it's there. */ |
8064 | target = ifc; | |
8065 | m = gfc_match (" =>"); | |
30b608eb DK |
8066 | if (m == MATCH_ERROR) |
8067 | return m; | |
1be17993 | 8068 | if (m == MATCH_YES) |
30b608eb | 8069 | { |
3e15518b | 8070 | if (tb.deferred) |
1be17993 JW |
8071 | { |
8072 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8073 | return MATCH_ERROR; | |
8074 | } | |
8075 | ||
8076 | if (!seen_colons) | |
8077 | { | |
8078 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8079 | " at %C"); | |
8080 | return MATCH_ERROR; | |
8081 | } | |
8082 | ||
8083 | m = gfc_match_name (target_buf); | |
8084 | if (m == MATCH_ERROR) | |
8085 | return m; | |
8086 | if (m == MATCH_NO) | |
8087 | { | |
8088 | gfc_error ("Expected binding target after '=>' at %C"); | |
8089 | return MATCH_ERROR; | |
8090 | } | |
8091 | target = target_buf; | |
30b608eb | 8092 | } |
30b608eb | 8093 | |
1be17993 JW |
8094 | /* If no target was found, it has the same name as the binding. */ |
8095 | if (!target) | |
8096 | target = name; | |
30b608eb | 8097 | |
1be17993 JW |
8098 | /* Get the namespace to insert the symbols into. */ |
8099 | ns = block->f2k_derived; | |
8100 | gcc_assert (ns); | |
30b608eb | 8101 | |
1be17993 | 8102 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8103 | if (tb.deferred && !block->attr.abstract) |
1be17993 JW |
8104 | { |
8105 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8106 | "is not ABSTRACT", block->name); | |
8107 | return MATCH_ERROR; | |
8108 | } | |
30b608eb | 8109 | |
1be17993 JW |
8110 | /* See if we already have a binding with this name in the symtree which |
8111 | would be an error. If a GENERIC already targetted this binding, it may | |
8112 | be already there but then typebound is still NULL. */ | |
8113 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8114 | if (stree && stree->n.tb) |
1be17993 JW |
8115 | { |
8116 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8117 | "the derived type '%s' at %C", name, block->name); | |
8118 | return MATCH_ERROR; | |
8119 | } | |
b0e5fa94 | 8120 | |
1be17993 | 8121 | /* Insert it and set attributes. */ |
30b608eb | 8122 | |
9f23af48 MM |
8123 | if (!stree) |
8124 | { | |
8125 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8126 | gcc_assert (stree); | |
8127 | } | |
3e15518b | 8128 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8129 | |
3e15518b JW |
8130 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8131 | false)) | |
1be17993 | 8132 | return MATCH_ERROR; |
3e15518b | 8133 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1be17993 JW |
8134 | |
8135 | if (gfc_match_eos () == MATCH_YES) | |
8136 | return MATCH_YES; | |
8137 | if (gfc_match_char (',') != MATCH_YES) | |
8138 | goto syntax; | |
e34ccb4c | 8139 | } |
30b608eb | 8140 | |
1be17993 JW |
8141 | syntax: |
8142 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8143 | return MATCH_ERROR; | |
30b608eb DK |
8144 | } |
8145 | ||
8146 | ||
e157f736 DK |
8147 | /* Match a GENERIC procedure binding inside a derived type. */ |
8148 | ||
8149 | match | |
8150 | gfc_match_generic (void) | |
8151 | { | |
8152 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8153 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8154 | gfc_symbol* block; |
8155 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8156 | gfc_typebound_proc* tb; | |
e157f736 | 8157 | gfc_namespace* ns; |
94747289 DK |
8158 | interface_type op_type; |
8159 | gfc_intrinsic_op op; | |
e157f736 DK |
8160 | match m; |
8161 | ||
8162 | /* Check current state. */ | |
8163 | if (gfc_current_state () == COMP_DERIVED) | |
8164 | { | |
8165 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8166 | return MATCH_ERROR; | |
8167 | } | |
8168 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8169 | return MATCH_NO; | |
8170 | block = gfc_state_stack->previous->sym; | |
8171 | ns = block->f2k_derived; | |
8172 | gcc_assert (block && ns); | |
8173 | ||
ff5b6492 MM |
8174 | memset (&tbattr, 0, sizeof (tbattr)); |
8175 | tbattr.where = gfc_current_locus; | |
8176 | ||
e157f736 | 8177 | /* See if we get an access-specifier. */ |
713485cc | 8178 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8179 | if (m == MATCH_ERROR) |
8180 | goto error; | |
8181 | ||
8182 | /* Now the colons, those are required. */ | |
8183 | if (gfc_match (" ::") != MATCH_YES) | |
8184 | { | |
8185 | gfc_error ("Expected '::' at %C"); | |
8186 | goto error; | |
8187 | } | |
8188 | ||
94747289 DK |
8189 | /* Match the binding name; depending on type (operator / generic) format |
8190 | it for future error messages into bind_name. */ | |
8191 | ||
8192 | m = gfc_match_generic_spec (&op_type, name, &op); | |
e157f736 DK |
8193 | if (m == MATCH_ERROR) |
8194 | return MATCH_ERROR; | |
8195 | if (m == MATCH_NO) | |
8196 | { | |
94747289 | 8197 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8198 | goto error; |
8199 | } | |
8200 | ||
94747289 | 8201 | switch (op_type) |
e157f736 | 8202 | { |
94747289 DK |
8203 | case INTERFACE_GENERIC: |
8204 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8205 | break; | |
8206 | ||
8207 | case INTERFACE_USER_OP: | |
8208 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8209 | break; | |
8210 | ||
8211 | case INTERFACE_INTRINSIC_OP: | |
8212 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8213 | gfc_op2string (op)); | |
8214 | break; | |
8215 | ||
8216 | default: | |
8217 | gcc_unreachable (); | |
8218 | } | |
e34ccb4c | 8219 | |
94747289 DK |
8220 | /* Match the required =>. */ |
8221 | if (gfc_match (" =>") != MATCH_YES) | |
8222 | { | |
8223 | gfc_error ("Expected '=>' at %C"); | |
8224 | goto error; | |
8225 | } | |
8226 | ||
8227 | /* Try to find existing GENERIC binding with this name / for this operator; | |
8228 | if there is something, check that it is another GENERIC and then extend | |
8229 | it rather than building a new node. Otherwise, create it and put it | |
8230 | at the right position. */ | |
8231 | ||
8232 | switch (op_type) | |
8233 | { | |
8234 | case INTERFACE_USER_OP: | |
8235 | case INTERFACE_GENERIC: | |
8236 | { | |
8237 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8238 | gfc_symtree* st; | |
8239 | ||
8240 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8241 | if (st) | |
8242 | { | |
8243 | tb = st->n.tb; | |
8244 | gcc_assert (tb); | |
8245 | } | |
8246 | else | |
8247 | tb = NULL; | |
8248 | ||
8249 | break; | |
8250 | } | |
8251 | ||
8252 | case INTERFACE_INTRINSIC_OP: | |
8253 | tb = ns->tb_op[op]; | |
8254 | break; | |
8255 | ||
8256 | default: | |
8257 | gcc_unreachable (); | |
8258 | } | |
8259 | ||
8260 | if (tb) | |
8261 | { | |
e34ccb4c | 8262 | if (!tb->is_generic) |
e157f736 | 8263 | { |
94747289 | 8264 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 DK |
8265 | gfc_error ("There's already a non-generic procedure with binding name" |
8266 | " '%s' for the derived type '%s' at %C", | |
94747289 | 8267 | bind_name, block->name); |
e157f736 DK |
8268 | goto error; |
8269 | } | |
8270 | ||
e157f736 DK |
8271 | if (tb->access != tbattr.access) |
8272 | { | |
8273 | gfc_error ("Binding at %C must have the same access as already" | |
94747289 | 8274 | " defined binding '%s'", bind_name); |
e157f736 DK |
8275 | goto error; |
8276 | } | |
8277 | } | |
8278 | else | |
8279 | { | |
3e15518b | 8280 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8281 | tb->where = gfc_current_locus; |
8282 | tb->access = tbattr.access; | |
8283 | tb->is_generic = 1; | |
8284 | tb->u.generic = NULL; | |
94747289 DK |
8285 | |
8286 | switch (op_type) | |
8287 | { | |
8288 | case INTERFACE_GENERIC: | |
8289 | case INTERFACE_USER_OP: | |
8290 | { | |
8291 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8292 | gfc_symtree* st; | |
8293 | ||
8294 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8295 | name); | |
8296 | gcc_assert (st); | |
8297 | st->n.tb = tb; | |
8298 | ||
8299 | break; | |
8300 | } | |
8301 | ||
8302 | case INTERFACE_INTRINSIC_OP: | |
8303 | ns->tb_op[op] = tb; | |
8304 | break; | |
8305 | ||
8306 | default: | |
8307 | gcc_unreachable (); | |
8308 | } | |
e157f736 DK |
8309 | } |
8310 | ||
8311 | /* Now, match all following names as specific targets. */ | |
8312 | do | |
8313 | { | |
8314 | gfc_symtree* target_st; | |
8315 | gfc_tbp_generic* target; | |
8316 | ||
8317 | m = gfc_match_name (name); | |
8318 | if (m == MATCH_ERROR) | |
8319 | goto error; | |
8320 | if (m == MATCH_NO) | |
8321 | { | |
8322 | gfc_error ("Expected specific binding name at %C"); | |
8323 | goto error; | |
8324 | } | |
8325 | ||
e34ccb4c | 8326 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8327 | |
8328 | /* See if this is a duplicate specification. */ | |
8329 | for (target = tb->u.generic; target; target = target->next) | |
8330 | if (target_st == target->specific_st) | |
8331 | { | |
8332 | gfc_error ("'%s' already defined as specific binding for the" | |
94747289 | 8333 | " generic '%s' at %C", name, bind_name); |
e157f736 DK |
8334 | goto error; |
8335 | } | |
8336 | ||
e157f736 DK |
8337 | target = gfc_get_tbp_generic (); |
8338 | target->specific_st = target_st; | |
8339 | target->specific = NULL; | |
8340 | target->next = tb->u.generic; | |
8341 | tb->u.generic = target; | |
8342 | } | |
8343 | while (gfc_match (" ,") == MATCH_YES); | |
8344 | ||
8345 | /* Here should be the end. */ | |
8346 | if (gfc_match_eos () != MATCH_YES) | |
8347 | { | |
8348 | gfc_error ("Junk after GENERIC binding at %C"); | |
8349 | goto error; | |
8350 | } | |
8351 | ||
8352 | return MATCH_YES; | |
8353 | ||
8354 | error: | |
8355 | return MATCH_ERROR; | |
8356 | } | |
8357 | ||
8358 | ||
34523524 DK |
8359 | /* Match a FINAL declaration inside a derived type. */ |
8360 | ||
8361 | match | |
8362 | gfc_match_final_decl (void) | |
8363 | { | |
8364 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8365 | gfc_symbol* sym; | |
8366 | match m; | |
8367 | gfc_namespace* module_ns; | |
8368 | bool first, last; | |
30b608eb | 8369 | gfc_symbol* block; |
34523524 | 8370 | |
33344e0f JW |
8371 | if (gfc_current_form == FORM_FREE) |
8372 | { | |
8373 | char c = gfc_peek_ascii_char (); | |
8374 | if (!gfc_is_whitespace (c) && c != ':') | |
8375 | return MATCH_NO; | |
8376 | } | |
8377 | ||
30b608eb | 8378 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8379 | { |
33344e0f JW |
8380 | if (gfc_current_form == FORM_FIXED) |
8381 | return MATCH_NO; | |
8382 | ||
34523524 | 8383 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8384 | "CONTAINS section"); |
34523524 DK |
8385 | return MATCH_ERROR; |
8386 | } | |
8387 | ||
30b608eb DK |
8388 | block = gfc_state_stack->previous->sym; |
8389 | gcc_assert (block); | |
34523524 | 8390 | |
30b608eb DK |
8391 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8392 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8393 | { |
8394 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8395 | " specification part of a MODULE"); | |
8396 | return MATCH_ERROR; | |
8397 | } | |
8398 | ||
8399 | module_ns = gfc_current_ns; | |
8400 | gcc_assert (module_ns); | |
8401 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8402 | ||
8403 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8404 | if (gfc_match (" ::") == MATCH_ERROR) | |
8405 | return MATCH_ERROR; | |
8406 | ||
8407 | /* Match the sequence of procedure names. */ | |
8408 | first = true; | |
8409 | last = false; | |
8410 | do | |
8411 | { | |
8412 | gfc_finalizer* f; | |
8413 | ||
8414 | if (first && gfc_match_eos () == MATCH_YES) | |
8415 | { | |
8416 | gfc_error ("Empty FINAL at %C"); | |
8417 | return MATCH_ERROR; | |
8418 | } | |
8419 | ||
8420 | m = gfc_match_name (name); | |
8421 | if (m == MATCH_NO) | |
8422 | { | |
8423 | gfc_error ("Expected module procedure name at %C"); | |
8424 | return MATCH_ERROR; | |
8425 | } | |
8426 | else if (m != MATCH_YES) | |
8427 | return MATCH_ERROR; | |
8428 | ||
8429 | if (gfc_match_eos () == MATCH_YES) | |
8430 | last = true; | |
8431 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8432 | { | |
8433 | gfc_error ("Expected ',' at %C"); | |
8434 | return MATCH_ERROR; | |
8435 | } | |
8436 | ||
8437 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8438 | { | |
8439 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8440 | return MATCH_ERROR; | |
8441 | } | |
8442 | ||
8443 | /* Mark the symbol as module procedure. */ | |
8444 | if (sym->attr.proc != PROC_MODULE | |
8445 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
8446 | sym->name, NULL) == FAILURE) | |
8447 | return MATCH_ERROR; | |
8448 | ||
8449 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 8450 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 8451 | if (f->proc_sym == sym) |
34523524 DK |
8452 | { |
8453 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8454 | name); | |
8455 | return MATCH_ERROR; | |
8456 | } | |
8457 | ||
8458 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 8459 | gcc_assert (block->f2k_derived); |
34523524 | 8460 | ++sym->refs; |
ece3f663 | 8461 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
8462 | f->proc_sym = sym; |
8463 | f->proc_tree = NULL; | |
34523524 | 8464 | f->where = gfc_current_locus; |
30b608eb DK |
8465 | f->next = block->f2k_derived->finalizers; |
8466 | block->f2k_derived->finalizers = f; | |
34523524 DK |
8467 | |
8468 | first = false; | |
8469 | } | |
8470 | while (!last); | |
8471 | ||
8472 | return MATCH_YES; | |
8473 | } | |
08a6b8e0 TB |
8474 | |
8475 | ||
8476 | const ext_attr_t ext_attr_list[] = { | |
8477 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, | |
8478 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8479 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8480 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8481 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8482 | { NULL, EXT_ATTR_LAST, NULL } | |
8483 | }; | |
8484 | ||
8485 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8486 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8487 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8488 | ||
8489 | TODO: We should support all GCC attributes using the same syntax for | |
8490 | the attribute list, i.e. the list in C | |
8491 | __attributes(( attribute-list )) | |
8492 | matches then | |
8493 | !GCC$ ATTRIBUTES attribute-list :: | |
8494 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8495 | saved into a TREE. | |
8496 | ||
8497 | As there is absolutely no risk of confusion, we should never return | |
8498 | MATCH_NO. */ | |
8499 | match | |
8500 | gfc_match_gcc_attributes (void) | |
8501 | { | |
8502 | symbol_attribute attr; | |
8503 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8504 | unsigned id; | |
8505 | gfc_symbol *sym; | |
8506 | match m; | |
8507 | ||
8508 | gfc_clear_attr (&attr); | |
8509 | for(;;) | |
8510 | { | |
8511 | char ch; | |
8512 | ||
8513 | if (gfc_match_name (name) != MATCH_YES) | |
8514 | return MATCH_ERROR; | |
8515 | ||
8516 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8517 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8518 | break; | |
8519 | ||
8520 | if (id == EXT_ATTR_LAST) | |
8521 | { | |
8522 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8523 | return MATCH_ERROR; | |
8524 | } | |
8525 | ||
2b374f55 | 8526 | if (gfc_add_ext_attribute (&attr, (ext_attr_id_t) id, &gfc_current_locus) |
08a6b8e0 TB |
8527 | == FAILURE) |
8528 | return MATCH_ERROR; | |
8529 | ||
8530 | gfc_gobble_whitespace (); | |
8531 | ch = gfc_next_ascii_char (); | |
8532 | if (ch == ':') | |
8533 | { | |
8534 | /* This is the successful exit condition for the loop. */ | |
8535 | if (gfc_next_ascii_char () == ':') | |
8536 | break; | |
8537 | } | |
8538 | ||
8539 | if (ch == ',') | |
8540 | continue; | |
8541 | ||
8542 | goto syntax; | |
8543 | } | |
8544 | ||
8545 | if (gfc_match_eos () == MATCH_YES) | |
8546 | goto syntax; | |
8547 | ||
8548 | for(;;) | |
8549 | { | |
8550 | m = gfc_match_name (name); | |
8551 | if (m != MATCH_YES) | |
8552 | return m; | |
8553 | ||
8554 | if (find_special (name, &sym, true)) | |
8555 | return MATCH_ERROR; | |
8556 | ||
8557 | sym->attr.ext_attr |= attr.ext_attr; | |
8558 | ||
8559 | if (gfc_match_eos () == MATCH_YES) | |
8560 | break; | |
8561 | ||
8562 | if (gfc_match_char (',') != MATCH_YES) | |
8563 | goto syntax; | |
8564 | } | |
8565 | ||
8566 | return MATCH_YES; | |
8567 | ||
8568 | syntax: | |
8569 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8570 | return MATCH_ERROR; | |
8571 | } |