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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); | |
294fbfc8 TS |
122 | gfc_free (p); |
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 TS |
138 | gfc_free_expr (p->expr); |
139 | gfc_free (p); | |
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); | |
294fbfc8 TS |
156 | gfc_free (p); |
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; | |
171 | gfc_free (ns->data); | |
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]; | |
326 | gfc_symbol *sym; | |
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 | ||
369 | if (sym == NULL | |
370 | || (sym->attr.flavor != FL_PARAMETER && sym->attr.flavor != FL_DERIVED)) | |
371 | { | |
372 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
373 | name); | |
374 | return MATCH_ERROR; | |
375 | } | |
376 | else if (sym->attr.flavor == FL_DERIVED) | |
7d1f1e61 | 377 | return gfc_match_structure_constructor (sym, result, false); |
294fbfc8 | 378 | |
d46e0870 JD |
379 | /* Check to see if the value is an initialization array expression. */ |
380 | if (sym->value->expr_type == EXPR_ARRAY) | |
381 | { | |
382 | gfc_current_locus = old_loc; | |
383 | ||
384 | m = gfc_match_init_expr (result); | |
385 | if (m == MATCH_ERROR) | |
386 | return m; | |
387 | ||
388 | if (m == MATCH_YES) | |
389 | { | |
390 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
391 | m = MATCH_ERROR; | |
392 | ||
393 | if ((*result)->expr_type == EXPR_CONSTANT) | |
394 | return m; | |
395 | else | |
396 | { | |
397 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
398 | return MATCH_ERROR; | |
399 | } | |
400 | } | |
401 | } | |
402 | ||
294fbfc8 TS |
403 | *result = gfc_copy_expr (sym->value); |
404 | return MATCH_YES; | |
405 | } | |
406 | ||
407 | ||
408 | /* Match a list of values in a DATA statement. The leading '/' has | |
409 | already been seen at this point. */ | |
410 | ||
411 | static match | |
636dff67 | 412 | top_val_list (gfc_data *data) |
294fbfc8 | 413 | { |
7b901ac4 | 414 | gfc_data_value *new_val, *tail; |
294fbfc8 | 415 | gfc_expr *expr; |
294fbfc8 TS |
416 | match m; |
417 | ||
418 | tail = NULL; | |
419 | ||
420 | for (;;) | |
421 | { | |
422 | m = match_data_constant (&expr); | |
423 | if (m == MATCH_NO) | |
424 | goto syntax; | |
425 | if (m == MATCH_ERROR) | |
426 | return MATCH_ERROR; | |
427 | ||
7b901ac4 KG |
428 | new_val = gfc_get_data_value (); |
429 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
430 | |
431 | if (tail == NULL) | |
7b901ac4 | 432 | data->value = new_val; |
294fbfc8 | 433 | else |
7b901ac4 | 434 | tail->next = new_val; |
294fbfc8 | 435 | |
7b901ac4 | 436 | tail = new_val; |
294fbfc8 TS |
437 | |
438 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
439 | { | |
440 | tail->expr = expr; | |
f2112868 | 441 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
442 | } |
443 | else | |
444 | { | |
f2112868 SK |
445 | if (expr->ts.type == BT_INTEGER) |
446 | mpz_set (tail->repeat, expr->value.integer); | |
294fbfc8 | 447 | gfc_free_expr (expr); |
294fbfc8 TS |
448 | |
449 | m = match_data_constant (&tail->expr); | |
450 | if (m == MATCH_NO) | |
451 | goto syntax; | |
452 | if (m == MATCH_ERROR) | |
453 | return MATCH_ERROR; | |
454 | } | |
455 | ||
456 | if (gfc_match_char ('/') == MATCH_YES) | |
457 | break; | |
458 | if (gfc_match_char (',') == MATCH_NO) | |
459 | goto syntax; | |
460 | } | |
461 | ||
462 | return MATCH_YES; | |
463 | ||
464 | syntax: | |
465 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 466 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
467 | return MATCH_ERROR; |
468 | } | |
469 | ||
470 | ||
471 | /* Matches an old style initialization. */ | |
472 | ||
473 | static match | |
474 | match_old_style_init (const char *name) | |
475 | { | |
476 | match m; | |
477 | gfc_symtree *st; | |
ed0e3607 | 478 | gfc_symbol *sym; |
294fbfc8 TS |
479 | gfc_data *newdata; |
480 | ||
481 | /* Set up data structure to hold initializers. */ | |
482 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
483 | sym = st->n.sym; |
484 | ||
294fbfc8 TS |
485 | newdata = gfc_get_data (); |
486 | newdata->var = gfc_get_data_variable (); | |
487 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 488 | newdata->where = gfc_current_locus; |
294fbfc8 | 489 | |
66e4ab31 | 490 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
491 | m = top_val_list (newdata); |
492 | if (m != MATCH_YES) | |
493 | { | |
494 | gfc_free (newdata); | |
495 | return m; | |
496 | } | |
497 | ||
498 | if (gfc_pure (NULL)) | |
499 | { | |
500 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
501 | gfc_free (newdata); | |
502 | return MATCH_ERROR; | |
503 | } | |
504 | ||
f1f39033 PT |
505 | if (gfc_implicit_pure (NULL)) |
506 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
507 | ||
ed0e3607 AL |
508 | /* Mark the variable as having appeared in a data statement. */ |
509 | if (gfc_add_data (&sym->attr, sym->name, &sym->declared_at) == FAILURE) | |
510 | { | |
511 | gfc_free (newdata); | |
512 | return MATCH_ERROR; | |
513 | } | |
514 | ||
294fbfc8 TS |
515 | /* Chain in namespace list of DATA initializers. */ |
516 | newdata->next = gfc_current_ns->data; | |
517 | gfc_current_ns->data = newdata; | |
518 | ||
519 | return m; | |
520 | } | |
521 | ||
636dff67 | 522 | |
294fbfc8 | 523 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 524 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 525 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 526 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
527 | |
528 | match | |
529 | gfc_match_data (void) | |
530 | { | |
7b901ac4 | 531 | gfc_data *new_data; |
294fbfc8 TS |
532 | match m; |
533 | ||
ca39e6f2 | 534 | set_in_match_data (true); |
2220652d | 535 | |
294fbfc8 TS |
536 | for (;;) |
537 | { | |
7b901ac4 KG |
538 | new_data = gfc_get_data (); |
539 | new_data->where = gfc_current_locus; | |
294fbfc8 | 540 | |
7b901ac4 | 541 | m = top_var_list (new_data); |
294fbfc8 TS |
542 | if (m != MATCH_YES) |
543 | goto cleanup; | |
544 | ||
7b901ac4 | 545 | m = top_val_list (new_data); |
294fbfc8 TS |
546 | if (m != MATCH_YES) |
547 | goto cleanup; | |
548 | ||
7b901ac4 KG |
549 | new_data->next = gfc_current_ns->data; |
550 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
551 | |
552 | if (gfc_match_eos () == MATCH_YES) | |
553 | break; | |
554 | ||
555 | gfc_match_char (','); /* Optional comma */ | |
556 | } | |
557 | ||
ca39e6f2 | 558 | set_in_match_data (false); |
2220652d | 559 | |
294fbfc8 TS |
560 | if (gfc_pure (NULL)) |
561 | { | |
562 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
563 | return MATCH_ERROR; | |
564 | } | |
565 | ||
f1f39033 PT |
566 | if (gfc_implicit_pure (NULL)) |
567 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
568 | ||
294fbfc8 TS |
569 | return MATCH_YES; |
570 | ||
571 | cleanup: | |
ca39e6f2 | 572 | set_in_match_data (false); |
7b901ac4 | 573 | gfc_free_data (new_data); |
294fbfc8 TS |
574 | return MATCH_ERROR; |
575 | } | |
576 | ||
577 | ||
578 | /************************ Declaration statements *********************/ | |
579 | ||
d3a9eea2 TB |
580 | |
581 | /* Auxilliary function to merge DIMENSION and CODIMENSION array specs. */ | |
582 | ||
583 | static void | |
584 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) | |
585 | { | |
586 | int i; | |
587 | ||
588 | if (to->rank == 0 && from->rank > 0) | |
589 | { | |
590 | to->rank = from->rank; | |
591 | to->type = from->type; | |
592 | to->cray_pointee = from->cray_pointee; | |
593 | to->cp_was_assumed = from->cp_was_assumed; | |
594 | ||
595 | for (i = 0; i < to->corank; i++) | |
596 | { | |
597 | to->lower[from->rank + i] = to->lower[i]; | |
598 | to->upper[from->rank + i] = to->upper[i]; | |
599 | } | |
600 | for (i = 0; i < from->rank; i++) | |
601 | { | |
602 | if (copy) | |
603 | { | |
604 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
605 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
606 | } | |
607 | else | |
608 | { | |
609 | to->lower[i] = from->lower[i]; | |
610 | to->upper[i] = from->upper[i]; | |
611 | } | |
612 | } | |
613 | } | |
614 | else if (to->corank == 0 && from->corank > 0) | |
615 | { | |
616 | to->corank = from->corank; | |
617 | to->cotype = from->cotype; | |
618 | ||
619 | for (i = 0; i < from->corank; i++) | |
620 | { | |
621 | if (copy) | |
622 | { | |
623 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
624 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
625 | } | |
626 | else | |
627 | { | |
628 | to->lower[to->rank + i] = from->lower[i]; | |
629 | to->upper[to->rank + i] = from->upper[i]; | |
630 | } | |
631 | } | |
632 | } | |
633 | } | |
634 | ||
635 | ||
6de9cd9a DN |
636 | /* Match an intent specification. Since this can only happen after an |
637 | INTENT word, a legal intent-spec must follow. */ | |
638 | ||
639 | static sym_intent | |
640 | match_intent_spec (void) | |
641 | { | |
642 | ||
643 | if (gfc_match (" ( in out )") == MATCH_YES) | |
644 | return INTENT_INOUT; | |
645 | if (gfc_match (" ( in )") == MATCH_YES) | |
646 | return INTENT_IN; | |
647 | if (gfc_match (" ( out )") == MATCH_YES) | |
648 | return INTENT_OUT; | |
649 | ||
650 | gfc_error ("Bad INTENT specification at %C"); | |
651 | return INTENT_UNKNOWN; | |
652 | } | |
653 | ||
654 | ||
655 | /* Matches a character length specification, which is either a | |
e69afb29 | 656 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
657 | |
658 | static match | |
e69afb29 | 659 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 660 | { |
cba28dad JD |
661 | match m; |
662 | ||
e69afb29 SK |
663 | *expr = NULL; |
664 | *deferred = false; | |
665 | ||
6de9cd9a | 666 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
667 | return MATCH_YES; |
668 | ||
669 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 670 | { |
e69afb29 SK |
671 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: deferred type " |
672 | "parameter at %C") == FAILURE) | |
673 | return MATCH_ERROR; | |
674 | ||
675 | *deferred = true; | |
676 | ||
6de9cd9a DN |
677 | return MATCH_YES; |
678 | } | |
679 | ||
cba28dad | 680 | m = gfc_match_expr (expr); |
f37e928c DK |
681 | |
682 | if (m == MATCH_YES | |
683 | && gfc_expr_check_typed (*expr, gfc_current_ns, false) == FAILURE) | |
684 | return MATCH_ERROR; | |
685 | ||
cba28dad JD |
686 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
687 | { | |
688 | if ((*expr)->value.function.actual | |
689 | && (*expr)->value.function.actual->expr->symtree) | |
690 | { | |
691 | gfc_expr *e; | |
692 | e = (*expr)->value.function.actual->expr; | |
693 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
694 | && e->expr_type == EXPR_VARIABLE) | |
695 | { | |
696 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
697 | goto syntax; | |
698 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
699 | && e->symtree->n.sym->ts.u.cl |
700 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
cba28dad JD |
701 | goto syntax; |
702 | } | |
703 | } | |
704 | } | |
705 | return m; | |
706 | ||
707 | syntax: | |
708 | gfc_error ("Conflict in attributes of function argument at %C"); | |
709 | return MATCH_ERROR; | |
6de9cd9a DN |
710 | } |
711 | ||
712 | ||
713 | /* A character length is a '*' followed by a literal integer or a | |
714 | char_len_param_value in parenthesis. */ | |
715 | ||
716 | static match | |
e69afb29 | 717 | match_char_length (gfc_expr **expr, bool *deferred) |
6de9cd9a | 718 | { |
5cf54585 | 719 | int length; |
6de9cd9a DN |
720 | match m; |
721 | ||
e69afb29 | 722 | *deferred = false; |
6de9cd9a DN |
723 | m = gfc_match_char ('*'); |
724 | if (m != MATCH_YES) | |
725 | return m; | |
726 | ||
5cf54585 | 727 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
728 | if (m == MATCH_ERROR) |
729 | return m; | |
730 | ||
731 | if (m == MATCH_YES) | |
732 | { | |
e2ab8b09 JW |
733 | if (gfc_notify_std (GFC_STD_F95_OBS, "Obsolescent feature: " |
734 | "Old-style character length at %C") == FAILURE) | |
735 | return MATCH_ERROR; | |
b7e75771 | 736 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
737 | return m; |
738 | } | |
739 | ||
740 | if (gfc_match_char ('(') == MATCH_NO) | |
741 | goto syntax; | |
742 | ||
e69afb29 | 743 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
744 | if (m != MATCH_YES && gfc_matching_function) |
745 | { | |
746 | gfc_undo_symbols (); | |
747 | m = MATCH_YES; | |
748 | } | |
749 | ||
6de9cd9a DN |
750 | if (m == MATCH_ERROR) |
751 | return m; | |
752 | if (m == MATCH_NO) | |
753 | goto syntax; | |
754 | ||
755 | if (gfc_match_char (')') == MATCH_NO) | |
756 | { | |
757 | gfc_free_expr (*expr); | |
758 | *expr = NULL; | |
759 | goto syntax; | |
760 | } | |
761 | ||
762 | return MATCH_YES; | |
763 | ||
764 | syntax: | |
765 | gfc_error ("Syntax error in character length specification at %C"); | |
766 | return MATCH_ERROR; | |
767 | } | |
768 | ||
769 | ||
9e35b386 EE |
770 | /* Special subroutine for finding a symbol. Check if the name is found |
771 | in the current name space. If not, and we're compiling a function or | |
772 | subroutine and the parent compilation unit is an interface, then check | |
773 | to see if the name we've been given is the name of the interface | |
774 | (located in another namespace). */ | |
6de9cd9a DN |
775 | |
776 | static int | |
08a6b8e0 | 777 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
778 | { |
779 | gfc_state_data *s; | |
08a6b8e0 | 780 | gfc_symtree *st; |
9e35b386 | 781 | int i; |
6de9cd9a | 782 | |
08a6b8e0 | 783 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 784 | if (i == 0) |
08a6b8e0 TB |
785 | { |
786 | *result = st ? st->n.sym : NULL; | |
787 | goto end; | |
788 | } | |
d51347f9 | 789 | |
6de9cd9a DN |
790 | if (gfc_current_state () != COMP_SUBROUTINE |
791 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 792 | goto end; |
6de9cd9a DN |
793 | |
794 | s = gfc_state_stack->previous; | |
795 | if (s == NULL) | |
9e35b386 | 796 | goto end; |
6de9cd9a DN |
797 | |
798 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 799 | goto end; |
6de9cd9a | 800 | if (s->sym == NULL) |
66e4ab31 | 801 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
802 | |
803 | if (strcmp (name, s->sym->name) == 0) | |
804 | { | |
805 | *result = s->sym; | |
806 | return 0; | |
807 | } | |
808 | ||
9e35b386 EE |
809 | end: |
810 | return i; | |
6de9cd9a DN |
811 | } |
812 | ||
813 | ||
814 | /* Special subroutine for getting a symbol node associated with a | |
815 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
816 | symbol is created in the parent using with symtree node in the | |
817 | child unit pointing to the symbol. If the current namespace has no | |
818 | parent, then the symbol is just created in the current unit. */ | |
819 | ||
820 | static int | |
636dff67 | 821 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
822 | { |
823 | gfc_symtree *st; | |
824 | gfc_symbol *sym; | |
a7ca4d8d | 825 | int rc = 0; |
6de9cd9a | 826 | |
1a492601 PT |
827 | /* Module functions have to be left in their own namespace because |
828 | they have potentially (almost certainly!) already been referenced. | |
829 | In this sense, they are rather like external functions. This is | |
830 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
831 | space is set to point to the master function, so that the fake | |
832 | result mechanism can work. */ | |
833 | if (module_fcn_entry) | |
6c12686b PT |
834 | { |
835 | /* Present if entry is declared to be a module procedure. */ | |
836 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 837 | |
6c12686b PT |
838 | if (*result == NULL) |
839 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 840 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
841 | && (*result)->ts.type == BT_UNKNOWN |
842 | && sym->attr.flavor == FL_UNKNOWN) | |
843 | /* Pick up the typespec for the entry, if declared in the function | |
844 | body. Note that this symbol is FL_UNKNOWN because it will | |
845 | only have appeared in a type declaration. The local symtree | |
846 | is set to point to the module symbol and a unique symtree | |
847 | to the local version. This latter ensures a correct clearing | |
848 | of the symbols. */ | |
2e32a71e PT |
849 | { |
850 | /* If the ENTRY proceeds its specification, we need to ensure | |
851 | that this does not raise a "has no IMPLICIT type" error. */ | |
852 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 853 | sym->attr.untyped = 1; |
2e32a71e | 854 | |
0e5a218b | 855 | (*result)->ts = sym->ts; |
2e32a71e PT |
856 | |
857 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 858 | the ENTRY precede its specification, the specification |
2e32a71e PT |
859 | can be applied. */ |
860 | (*result)->ns = gfc_current_ns; | |
861 | ||
862 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
863 | st->n.sym = *result; | |
864 | st = gfc_get_unique_symtree (gfc_current_ns); | |
865 | st->n.sym = sym; | |
866 | } | |
6c12686b | 867 | } |
68ea355b PT |
868 | else |
869 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 870 | |
a7ca4d8d PT |
871 | if (rc) |
872 | return rc; | |
873 | ||
68ea355b | 874 | sym = *result; |
2c693a24 | 875 | gfc_current_ns->refs++; |
6de9cd9a | 876 | |
7b901ac4 | 877 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
68ea355b | 878 | { |
cda7004b PT |
879 | /* Trap another encompassed procedure with the same name. All |
880 | these conditions are necessary to avoid picking up an entry | |
881 | whose name clashes with that of the encompassing procedure; | |
882 | this is handled using gsymbols to register unique,globally | |
883 | accessible names. */ | |
68ea355b | 884 | if (sym->attr.flavor != 0 |
636dff67 SK |
885 | && sym->attr.proc != 0 |
886 | && (sym->attr.subroutine || sym->attr.function) | |
887 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
68ea355b PT |
888 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
889 | name, &sym->declared_at); | |
890 | ||
fd3e70af JD |
891 | /* Trap a procedure with a name the same as interface in the |
892 | encompassing scope. */ | |
893 | if (sym->attr.generic != 0 | |
2305fa31 JD |
894 | && (sym->attr.subroutine || sym->attr.function) |
895 | && !sym->attr.mod_proc) | |
fd3e70af JD |
896 | gfc_error_now ("Name '%s' at %C is already defined" |
897 | " as a generic interface at %L", | |
898 | name, &sym->declared_at); | |
899 | ||
68ea355b PT |
900 | /* Trap declarations of attributes in encompassing scope. The |
901 | signature for this is that ts.kind is set. Legitimate | |
902 | references only set ts.type. */ | |
903 | if (sym->ts.kind != 0 | |
636dff67 SK |
904 | && !sym->attr.implicit_type |
905 | && sym->attr.proc == 0 | |
906 | && gfc_current_ns->parent != NULL | |
907 | && sym->attr.access == 0 | |
908 | && !module_fcn_entry) | |
909 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
910 | "and must not have attributes declared at %L", | |
68ea355b PT |
911 | name, &sym->declared_at); |
912 | } | |
913 | ||
914 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
915 | return rc; | |
6de9cd9a | 916 | |
1a492601 PT |
917 | /* Module function entries will already have a symtree in |
918 | the current namespace but will need one at module level. */ | |
919 | if (module_fcn_entry) | |
6c12686b PT |
920 | { |
921 | /* Present if entry is declared to be a module procedure. */ | |
922 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
923 | if (st == NULL) | |
924 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
925 | } | |
1a492601 PT |
926 | else |
927 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 928 | |
6de9cd9a DN |
929 | st->n.sym = sym; |
930 | sym->refs++; | |
931 | ||
66e4ab31 | 932 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 933 | |
1a492601 | 934 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
935 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
936 | && sym->attr.proc != PROC_MODULE) | |
937 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
938 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
939 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
940 | rc = 2; |
941 | ||
942 | return rc; | |
943 | } | |
944 | ||
945 | ||
a8b3b0b6 CR |
946 | /* Verify that the given symbol representing a parameter is C |
947 | interoperable, by checking to see if it was marked as such after | |
948 | its declaration. If the given symbol is not interoperable, a | |
949 | warning is reported, thus removing the need to return the status to | |
950 | the calling function. The standard does not require the user use | |
951 | one of the iso_c_binding named constants to declare an | |
952 | interoperable parameter, but we can't be sure if the param is C | |
953 | interop or not if the user doesn't. For example, integer(4) may be | |
954 | legal Fortran, but doesn't have meaning in C. It may interop with | |
955 | a number of the C types, which causes a problem because the | |
956 | compiler can't know which one. This code is almost certainly not | |
957 | portable, and the user will get what they deserve if the C type | |
958 | across platforms isn't always interoperable with integer(4). If | |
959 | the user had used something like integer(c_int) or integer(c_long), | |
960 | the compiler could have automatically handled the varying sizes | |
961 | across platforms. */ | |
962 | ||
17b1d2a0 | 963 | gfc_try |
a8b3b0b6 CR |
964 | verify_c_interop_param (gfc_symbol *sym) |
965 | { | |
966 | int is_c_interop = 0; | |
17b1d2a0 | 967 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
968 | |
969 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
970 | Don't repeat the checks here. */ | |
971 | if (sym->attr.implicit_type) | |
972 | return SUCCESS; | |
973 | ||
974 | /* For subroutines or functions that are passed to a BIND(C) procedure, | |
975 | they're interoperable if they're BIND(C) and their params are all | |
976 | interoperable. */ | |
977 | if (sym->attr.flavor == FL_PROCEDURE) | |
978 | { | |
979 | if (sym->attr.is_bind_c == 0) | |
980 | { | |
981 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
982 | "attribute to be C interoperable", sym->name, | |
983 | &(sym->declared_at)); | |
984 | ||
985 | return FAILURE; | |
986 | } | |
987 | else | |
988 | { | |
989 | if (sym->attr.is_c_interop == 1) | |
990 | /* We've already checked this procedure; don't check it again. */ | |
991 | return SUCCESS; | |
992 | else | |
993 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
994 | sym->common_block); | |
995 | } | |
996 | } | |
997 | ||
998 | /* See if we've stored a reference to a procedure that owns sym. */ | |
999 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1000 | { | |
1001 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1002 | { | |
1003 | is_c_interop = | |
2ec855f1 | 1004 | (verify_c_interop (&(sym->ts)) |
a8b3b0b6 CR |
1005 | == SUCCESS ? 1 : 0); |
1006 | ||
1007 | if (is_c_interop != 1) | |
1008 | { | |
1009 | /* Make personalized messages to give better feedback. */ | |
1010 | if (sym->ts.type == BT_DERIVED) | |
1011 | gfc_error ("Type '%s' at %L is a parameter to the BIND(C) " | |
ba3721c1 | 1012 | "procedure '%s' but is not C interoperable " |
a8b3b0b6 CR |
1013 | "because derived type '%s' is not C interoperable", |
1014 | sym->name, &(sym->declared_at), | |
1015 | sym->ns->proc_name->name, | |
bc21d315 | 1016 | sym->ts.u.derived->name); |
a8b3b0b6 CR |
1017 | else |
1018 | gfc_warning ("Variable '%s' at %L is a parameter to the " | |
1019 | "BIND(C) procedure '%s' but may not be C " | |
1020 | "interoperable", | |
1021 | sym->name, &(sym->declared_at), | |
1022 | sym->ns->proc_name->name); | |
1023 | } | |
aa5e22f0 CR |
1024 | |
1025 | /* Character strings are only C interoperable if they have a | |
1026 | length of 1. */ | |
1027 | if (sym->ts.type == BT_CHARACTER) | |
1028 | { | |
bc21d315 | 1029 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1030 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1031 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1032 | { | |
1033 | gfc_error ("Character argument '%s' at %L " | |
1034 | "must be length 1 because " | |
1035 | "procedure '%s' is BIND(C)", | |
1036 | sym->name, &sym->declared_at, | |
1037 | sym->ns->proc_name->name); | |
1038 | retval = FAILURE; | |
1039 | } | |
1040 | } | |
1041 | ||
a8b3b0b6 CR |
1042 | /* We have to make sure that any param to a bind(c) routine does |
1043 | not have the allocatable, pointer, or optional attributes, | |
1044 | according to J3/04-007, section 5.1. */ | |
1045 | if (sym->attr.allocatable == 1) | |
1046 | { | |
1047 | gfc_error ("Variable '%s' at %L cannot have the " | |
1048 | "ALLOCATABLE attribute because procedure '%s'" | |
1049 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1050 | sym->ns->proc_name->name); | |
1051 | retval = FAILURE; | |
1052 | } | |
1053 | ||
1054 | if (sym->attr.pointer == 1) | |
1055 | { | |
1056 | gfc_error ("Variable '%s' at %L cannot have the " | |
1057 | "POINTER attribute because procedure '%s'" | |
1058 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1059 | sym->ns->proc_name->name); | |
1060 | retval = FAILURE; | |
1061 | } | |
1062 | ||
1063 | if (sym->attr.optional == 1) | |
1064 | { | |
1065 | gfc_error ("Variable '%s' at %L cannot have the " | |
1066 | "OPTIONAL attribute because procedure '%s'" | |
1067 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1068 | sym->ns->proc_name->name); | |
1069 | retval = FAILURE; | |
1070 | } | |
1071 | ||
1072 | /* Make sure that if it has the dimension attribute, that it is | |
1073 | either assumed size or explicit shape. */ | |
1074 | if (sym->as != NULL) | |
1075 | { | |
1076 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
1077 | { | |
1078 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
1079 | "argument to the procedure '%s' at %L because " | |
1080 | "the procedure is BIND(C)", sym->name, | |
1081 | &(sym->declared_at), sym->ns->proc_name->name, | |
1082 | &(sym->ns->proc_name->declared_at)); | |
1083 | retval = FAILURE; | |
1084 | } | |
1085 | ||
1086 | if (sym->as->type == AS_DEFERRED) | |
1087 | { | |
1088 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
1089 | "argument to the procedure '%s' at %L because " | |
1090 | "the procedure is BIND(C)", sym->name, | |
1091 | &(sym->declared_at), sym->ns->proc_name->name, | |
1092 | &(sym->ns->proc_name->declared_at)); | |
1093 | retval = FAILURE; | |
1094 | } | |
1095 | } | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | return retval; | |
1100 | } | |
1101 | ||
1102 | ||
cf2b3c22 | 1103 | |
a8b3b0b6 | 1104 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1105 | |
17b1d2a0 | 1106 | static gfc_try |
e69afb29 | 1107 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1108 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1109 | { |
1110 | symbol_attribute attr; | |
1111 | gfc_symbol *sym; | |
1112 | ||
9e35b386 | 1113 | if (gfc_get_symbol (name, NULL, &sym)) |
6de9cd9a DN |
1114 | return FAILURE; |
1115 | ||
66e4ab31 | 1116 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1117 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1118 | && (sym->attr.implicit_type == 0 |
1119 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
6de9cd9a DN |
1120 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
1121 | return FAILURE; | |
1122 | ||
1123 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1124 | { |
1125 | sym->ts.u.cl = cl; | |
1126 | sym->ts.deferred = cl_deferred; | |
1127 | } | |
6de9cd9a DN |
1128 | |
1129 | /* Add dimension attribute if present. */ | |
1130 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
1131 | return FAILURE; | |
1132 | *as = NULL; | |
1133 | ||
1134 | /* Add attribute to symbol. The copy is so that we can reset the | |
1135 | dimension attribute. */ | |
1136 | attr = current_attr; | |
1137 | attr.dimension = 0; | |
be59db2d | 1138 | attr.codimension = 0; |
6de9cd9a DN |
1139 | |
1140 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
1141 | return FAILURE; | |
1142 | ||
a8b3b0b6 CR |
1143 | /* Finish any work that may need to be done for the binding label, |
1144 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1145 | is made, and before the symbol name (for data decls), so the | |
1146 | current_ts is holding the binding label, or nothing if the | |
1147 | name= attr wasn't given. Therefore, test here if we're dealing | |
1148 | with a bind(c) and make sure the binding label is set correctly. */ | |
1149 | if (sym->attr.is_bind_c == 1) | |
1150 | { | |
1151 | if (sym->binding_label[0] == '\0') | |
1152 | { | |
ad4a2f64 TB |
1153 | /* Set the binding label and verify that if a NAME= was specified |
1154 | then only one identifier was in the entity-decl-list. */ | |
1155 | if (set_binding_label (sym->binding_label, sym->name, | |
1156 | num_idents_on_line) == FAILURE) | |
a8b3b0b6 CR |
1157 | return FAILURE; |
1158 | } | |
1159 | } | |
1160 | ||
1161 | /* See if we know we're in a common block, and if it's a bind(c) | |
1162 | common then we need to make sure we're an interoperable type. */ | |
1163 | if (sym->attr.in_common == 1) | |
1164 | { | |
1165 | /* Test the common block object. */ | |
1166 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1167 | && sym->ts.is_c_interop != 1) | |
1168 | { | |
1169 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1170 | "must be declared with a C interoperable " | |
1171 | "kind since common block '%s' is BIND(C)", | |
1172 | sym->name, sym->common_block->name, | |
1173 | sym->common_block->name); | |
1174 | gfc_clear_error (); | |
1175 | } | |
1176 | } | |
1177 | ||
9a3db5a3 PT |
1178 | sym->attr.implied_index = 0; |
1179 | ||
d40477b4 JW |
1180 | if (sym->ts.type == BT_CLASS |
1181 | && (sym->attr.class_ok = sym->attr.dummy || sym->attr.pointer | |
1182 | || sym->attr.allocatable)) | |
96d9b22c | 1183 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
cf2b3c22 | 1184 | |
6de9cd9a DN |
1185 | return SUCCESS; |
1186 | } | |
1187 | ||
636dff67 | 1188 | |
df7cc9b5 | 1189 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1190 | truncated. If we're inside an array constructor without a typespec, we |
1191 | additionally check that all elements have the same length; check_len -1 | |
1192 | means no checking. */ | |
df7cc9b5 FW |
1193 | |
1194 | void | |
d2848082 | 1195 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1196 | { |
00660189 | 1197 | gfc_char_t *s; |
df7cc9b5 FW |
1198 | int slen; |
1199 | ||
1200 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1201 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1202 | |
1203 | slen = expr->value.character.length; | |
1204 | if (len != slen) | |
1205 | { | |
00660189 FXC |
1206 | s = gfc_get_wide_string (len + 1); |
1207 | memcpy (s, expr->value.character.string, | |
1208 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1209 | if (len > slen) |
00660189 | 1210 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d PT |
1211 | |
1212 | if (gfc_option.warn_character_truncation && slen > len) | |
1213 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1214 | "(%d/%d)", &expr->where, slen, len); | |
1215 | ||
1216 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1217 | initializers. */ | |
d2848082 DK |
1218 | if (check_len != -1 && slen != check_len |
1219 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1220 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1221 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1222 | &expr->where, slen, check_len); |
2220652d | 1223 | |
150675a8 | 1224 | s[len] = '\0'; |
df7cc9b5 FW |
1225 | gfc_free (expr->value.character.string); |
1226 | expr->value.character.string = s; | |
1227 | expr->value.character.length = len; | |
1228 | } | |
1229 | } | |
6de9cd9a | 1230 | |
25d8f0a2 | 1231 | |
d51347f9 | 1232 | /* Function to create and update the enumerator history |
25d8f0a2 | 1233 | using the information passed as arguments. |
d51347f9 TB |
1234 | Pointer "max_enum" is also updated, to point to |
1235 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1236 | |
1237 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1238 | INIT points to its enumerator value. */ |
25d8f0a2 | 1239 | |
d51347f9 | 1240 | static void |
636dff67 | 1241 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1242 | { |
1243 | enumerator_history *new_enum_history; | |
1244 | gcc_assert (sym != NULL && init != NULL); | |
1245 | ||
ece3f663 | 1246 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1247 | |
1248 | new_enum_history->sym = sym; | |
1249 | new_enum_history->initializer = init; | |
1250 | new_enum_history->next = NULL; | |
1251 | ||
1252 | if (enum_history == NULL) | |
1253 | { | |
1254 | enum_history = new_enum_history; | |
1255 | max_enum = enum_history; | |
1256 | } | |
1257 | else | |
1258 | { | |
1259 | new_enum_history->next = enum_history; | |
1260 | enum_history = new_enum_history; | |
1261 | ||
d51347f9 | 1262 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1263 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1264 | max_enum = new_enum_history; |
25d8f0a2 TS |
1265 | } |
1266 | } | |
1267 | ||
1268 | ||
d51347f9 | 1269 | /* Function to free enum kind history. */ |
25d8f0a2 | 1270 | |
d51347f9 | 1271 | void |
636dff67 | 1272 | gfc_free_enum_history (void) |
25d8f0a2 | 1273 | { |
d51347f9 TB |
1274 | enumerator_history *current = enum_history; |
1275 | enumerator_history *next; | |
25d8f0a2 TS |
1276 | |
1277 | while (current != NULL) | |
1278 | { | |
1279 | next = current->next; | |
1280 | gfc_free (current); | |
1281 | current = next; | |
1282 | } | |
1283 | max_enum = NULL; | |
1284 | enum_history = NULL; | |
1285 | } | |
1286 | ||
1287 | ||
6de9cd9a DN |
1288 | /* Function called by variable_decl() that adds an initialization |
1289 | expression to a symbol. */ | |
1290 | ||
17b1d2a0 | 1291 | static gfc_try |
66e4ab31 | 1292 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1293 | { |
1294 | symbol_attribute attr; | |
1295 | gfc_symbol *sym; | |
1296 | gfc_expr *init; | |
1297 | ||
1298 | init = *initp; | |
08a6b8e0 | 1299 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
1300 | return FAILURE; |
1301 | ||
1302 | attr = sym->attr; | |
1303 | ||
1304 | /* If this symbol is confirming an implicit parameter type, | |
1305 | then an initialization expression is not allowed. */ | |
1306 | if (attr.flavor == FL_PARAMETER | |
1307 | && sym->value != NULL | |
1308 | && *initp != NULL) | |
1309 | { | |
1310 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1311 | sym->name); | |
1312 | return FAILURE; | |
1313 | } | |
1314 | ||
1315 | if (init == NULL) | |
1316 | { | |
1317 | /* An initializer is required for PARAMETER declarations. */ | |
1318 | if (attr.flavor == FL_PARAMETER) | |
1319 | { | |
1320 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1321 | return FAILURE; | |
1322 | } | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1327 | initializer. */ |
6de9cd9a DN |
1328 | if (sym->attr.data) |
1329 | { | |
636dff67 SK |
1330 | gfc_error ("Variable '%s' at %C with an initializer already " |
1331 | "appears in a DATA statement", sym->name); | |
6de9cd9a DN |
1332 | return FAILURE; |
1333 | } | |
1334 | ||
75d17889 | 1335 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1336 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1337 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1338 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
80f95228 | 1339 | && !sym->attr.proc_pointer |
6de9cd9a DN |
1340 | && gfc_check_assign_symbol (sym, init) == FAILURE) |
1341 | return FAILURE; | |
1342 | ||
bc21d315 | 1343 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1344 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1345 | { |
1346 | /* Update symbol character length according initializer. */ | |
51b128a0 PT |
1347 | if (gfc_check_assign_symbol (sym, init) == FAILURE) |
1348 | return FAILURE; | |
1349 | ||
bc21d315 | 1350 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1351 | { |
a99288e5 | 1352 | int clen; |
66e4ab31 SK |
1353 | /* If there are multiple CHARACTER variables declared on the |
1354 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1355 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1356 | |
a99288e5 PT |
1357 | if (sym->attr.flavor == FL_PARAMETER) |
1358 | { | |
1359 | if (init->expr_type == EXPR_CONSTANT) | |
1360 | { | |
1361 | clen = init->value.character.length; | |
b7e75771 JD |
1362 | sym->ts.u.cl->length |
1363 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1364 | NULL, clen); | |
a99288e5 PT |
1365 | } |
1366 | else if (init->expr_type == EXPR_ARRAY) | |
1367 | { | |
b7e75771 JD |
1368 | gfc_constructor *c; |
1369 | c = gfc_constructor_first (init->value.constructor); | |
1370 | clen = c->expr->value.character.length; | |
1371 | sym->ts.u.cl->length | |
1372 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1373 | NULL, clen); | |
a99288e5 | 1374 | } |
bc21d315 JW |
1375 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1376 | sym->ts.u.cl->length = | |
1377 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1378 | } |
df7cc9b5 FW |
1379 | } |
1380 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1381 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1382 | { |
bc21d315 | 1383 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
df7cc9b5 FW |
1384 | |
1385 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1386 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1387 | else if (init->expr_type == EXPR_ARRAY) |
1388 | { | |
b7e75771 JD |
1389 | gfc_constructor *c; |
1390 | ||
dcdc7b6c PT |
1391 | /* Build a new charlen to prevent simplification from |
1392 | deleting the length before it is resolved. */ | |
b76e28c6 | 1393 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1394 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1395 | |
b7e75771 JD |
1396 | for (c = gfc_constructor_first (init->value.constructor); |
1397 | c; c = gfc_constructor_next (c)) | |
1398 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1399 | } |
1400 | } | |
1401 | } | |
1402 | ||
f5ca06e6 DK |
1403 | /* If sym is implied-shape, set its upper bounds from init. */ |
1404 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1405 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1406 | { | |
1407 | int dim; | |
1408 | ||
1409 | if (init->rank == 0) | |
1410 | { | |
1411 | gfc_error ("Can't initialize implied-shape array at %L" | |
1412 | " with scalar", &sym->declared_at); | |
1413 | return FAILURE; | |
1414 | } | |
1415 | gcc_assert (sym->as->rank == init->rank); | |
1416 | ||
1417 | /* Shape should be present, we get an initialization expression. */ | |
1418 | gcc_assert (init->shape); | |
1419 | ||
1420 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1421 | { | |
1422 | int k; | |
1423 | gfc_expr* lower; | |
1424 | gfc_expr* e; | |
1425 | ||
1426 | lower = sym->as->lower[dim]; | |
1427 | if (lower->expr_type != EXPR_CONSTANT) | |
1428 | { | |
1429 | gfc_error ("Non-constant lower bound in implied-shape" | |
1430 | " declaration at %L", &lower->where); | |
1431 | return FAILURE; | |
1432 | } | |
1433 | ||
1434 | /* All dimensions must be without upper bound. */ | |
1435 | gcc_assert (!sym->as->upper[dim]); | |
1436 | ||
1437 | k = lower->ts.kind; | |
1438 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1439 | mpz_add (e->value.integer, | |
1440 | lower->value.integer, init->shape[dim]); | |
1441 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1442 | sym->as->upper[dim] = e; | |
1443 | } | |
1444 | ||
1445 | sym->as->type = AS_EXPLICIT; | |
1446 | } | |
1447 | ||
a8b3b0b6 CR |
1448 | /* Need to check if the expression we initialized this |
1449 | to was one of the iso_c_binding named constants. If so, | |
1450 | and we're a parameter (constant), let it be iso_c. | |
1451 | For example: | |
1452 | integer(c_int), parameter :: my_int = c_int | |
1453 | integer(my_int) :: my_int_2 | |
1454 | If we mark my_int as iso_c (since we can see it's value | |
1455 | is equal to one of the named constants), then my_int_2 | |
1456 | will be considered C interoperable. */ | |
1457 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1458 | { | |
1459 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1460 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1461 | /* attr bits needed for module files. */ | |
1462 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1463 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1464 | if (init->ts.is_iso_c) | |
1465 | sym->ts.f90_type = init->ts.f90_type; | |
1466 | } | |
b7e75771 | 1467 | |
6de9cd9a DN |
1468 | /* Add initializer. Make sure we keep the ranks sane. */ |
1469 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1470 | { |
1471 | mpz_t size; | |
1472 | gfc_expr *array; | |
a9b43781 PT |
1473 | int n; |
1474 | if (sym->attr.flavor == FL_PARAMETER | |
1475 | && init->expr_type == EXPR_CONSTANT | |
1476 | && spec_size (sym->as, &size) == SUCCESS | |
1477 | && mpz_cmp_si (size, 0) > 0) | |
1478 | { | |
b7e75771 JD |
1479 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1480 | &init->where); | |
a9b43781 | 1481 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1482 | gfc_constructor_append_expr (&array->value.constructor, |
1483 | n == 0 | |
1484 | ? init | |
1485 | : gfc_copy_expr (init), | |
1486 | &init->where); | |
1487 | ||
a9b43781 PT |
1488 | array->shape = gfc_get_shape (sym->as->rank); |
1489 | for (n = 0; n < sym->as->rank; n++) | |
1490 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1491 | ||
1492 | init = array; | |
1493 | mpz_clear (size); | |
1494 | } | |
1495 | init->rank = sym->as->rank; | |
1496 | } | |
6de9cd9a DN |
1497 | |
1498 | sym->value = init; | |
ef7236d2 DF |
1499 | if (sym->attr.save == SAVE_NONE) |
1500 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1501 | *initp = NULL; |
1502 | } | |
1503 | ||
1504 | return SUCCESS; | |
1505 | } | |
1506 | ||
1507 | ||
1508 | /* Function called by variable_decl() that adds a name to a structure | |
1509 | being built. */ | |
1510 | ||
17b1d2a0 | 1511 | static gfc_try |
636dff67 SK |
1512 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1513 | gfc_array_spec **as) | |
6de9cd9a DN |
1514 | { |
1515 | gfc_component *c; | |
2e23972e | 1516 | gfc_try t = SUCCESS; |
6de9cd9a | 1517 | |
619dd721 | 1518 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1519 | constructing, it must have the pointer attribute. */ |
619dd721 | 1520 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1521 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1522 | && current_attr.pointer == 0) |
1523 | { | |
1524 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1525 | return FAILURE; | |
1526 | } | |
1527 | ||
636dff67 | 1528 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1529 | { |
1530 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1531 | { | |
1532 | gfc_error ("Array component of structure at %C must have explicit " | |
1533 | "or deferred shape"); | |
1534 | return FAILURE; | |
1535 | } | |
1536 | } | |
1537 | ||
1538 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1539 | return FAILURE; | |
1540 | ||
1541 | c->ts = current_ts; | |
bc21d315 JW |
1542 | if (c->ts.type == BT_CHARACTER) |
1543 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1544 | c->attr = current_attr; |
6de9cd9a DN |
1545 | |
1546 | c->initializer = *init; | |
1547 | *init = NULL; | |
1548 | ||
1549 | c->as = *as; | |
1550 | if (c->as != NULL) | |
be59db2d TB |
1551 | { |
1552 | if (c->as->corank) | |
1553 | c->attr.codimension = 1; | |
1554 | if (c->as->rank) | |
1555 | c->attr.dimension = 1; | |
1556 | } | |
6de9cd9a DN |
1557 | *as = NULL; |
1558 | ||
28d08315 PT |
1559 | /* Should this ever get more complicated, combine with similar section |
1560 | in add_init_expr_to_sym into a separate function. */ | |
bc21d315 JW |
1561 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer && c->ts.u.cl |
1562 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) | |
28d08315 | 1563 | { |
d2848082 DK |
1564 | int len; |
1565 | ||
bc21d315 JW |
1566 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1567 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1568 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1569 | |
bc21d315 | 1570 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1571 | |
1572 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1573 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1574 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1575 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1576 | { |
b7e75771 JD |
1577 | gfc_constructor *ctor; |
1578 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1579 | |
2f4d1994 | 1580 | if (ctor) |
d2848082 | 1581 | { |
2f4d1994 | 1582 | int first_len; |
b7e75771 JD |
1583 | bool has_ts = (c->initializer->ts.u.cl |
1584 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1585 | |
1586 | /* Remember the length of the first element for checking | |
1587 | that all elements *in the constructor* have the same | |
1588 | length. This need not be the length of the LHS! */ | |
1589 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1590 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1591 | first_len = ctor->expr->value.character.length; | |
1592 | ||
b7e75771 JD |
1593 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1594 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1595 | { |
b7e75771 JD |
1596 | gfc_set_constant_character_len (len, ctor->expr, |
1597 | has_ts ? -1 : first_len); | |
1598 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1599 | } |
d2848082 | 1600 | } |
28d08315 PT |
1601 | } |
1602 | } | |
1603 | ||
6de9cd9a | 1604 | /* Check array components. */ |
d4b7d0f0 | 1605 | if (!c->attr.dimension) |
2e23972e | 1606 | goto scalar; |
6de9cd9a | 1607 | |
d4b7d0f0 | 1608 | if (c->attr.pointer) |
6de9cd9a DN |
1609 | { |
1610 | if (c->as->type != AS_DEFERRED) | |
1611 | { | |
5046aff5 PT |
1612 | gfc_error ("Pointer array component of structure at %C must have a " |
1613 | "deferred shape"); | |
2e23972e | 1614 | t = FAILURE; |
5046aff5 PT |
1615 | } |
1616 | } | |
d4b7d0f0 | 1617 | else if (c->attr.allocatable) |
5046aff5 PT |
1618 | { |
1619 | if (c->as->type != AS_DEFERRED) | |
1620 | { | |
1621 | gfc_error ("Allocatable component of structure at %C must have a " | |
1622 | "deferred shape"); | |
2e23972e | 1623 | t = FAILURE; |
6de9cd9a DN |
1624 | } |
1625 | } | |
1626 | else | |
1627 | { | |
1628 | if (c->as->type != AS_EXPLICIT) | |
1629 | { | |
636dff67 SK |
1630 | gfc_error ("Array component of structure at %C must have an " |
1631 | "explicit shape"); | |
2e23972e | 1632 | t = FAILURE; |
6de9cd9a DN |
1633 | } |
1634 | } | |
1635 | ||
2e23972e JW |
1636 | scalar: |
1637 | if (c->ts.type == BT_CLASS) | |
17643884 JW |
1638 | { |
1639 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1640 | || (!c->ts.u.derived->components | |
1641 | && !c->ts.u.derived->attr.zero_comp); | |
96d9b22c | 1642 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
17643884 JW |
1643 | } |
1644 | ||
2e23972e | 1645 | return t; |
6de9cd9a DN |
1646 | } |
1647 | ||
1648 | ||
1649 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1650 | ||
1651 | match | |
636dff67 | 1652 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1653 | { |
1654 | gfc_symbol *sym; | |
6de9cd9a DN |
1655 | match m; |
1656 | ||
1657 | m = gfc_match (" null ( )"); | |
1658 | if (m != MATCH_YES) | |
1659 | return m; | |
1660 | ||
1661 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1662 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1663 | { | |
1664 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1665 | return MATCH_ERROR; | |
1666 | } | |
1667 | ||
1668 | gfc_intrinsic_symbol (sym); | |
1669 | ||
1670 | if (sym->attr.proc != PROC_INTRINSIC | |
231b2fcc TS |
1671 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1672 | sym->name, NULL) == FAILURE | |
1673 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
6de9cd9a DN |
1674 | return MATCH_ERROR; |
1675 | ||
b7e75771 | 1676 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a DN |
1677 | |
1678 | return MATCH_YES; | |
1679 | } | |
1680 | ||
1681 | ||
80f95228 JW |
1682 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1683 | ||
1684 | static match | |
1685 | match_pointer_init (gfc_expr **init, int procptr) | |
1686 | { | |
1687 | match m; | |
1688 | ||
1689 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1690 | { | |
1691 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1692 | "a PURE procedure"); | |
1693 | return MATCH_ERROR; | |
1694 | } | |
1695 | ||
1696 | /* Match NULL() initilization. */ | |
1697 | m = gfc_match_null (init); | |
1698 | if (m != MATCH_NO) | |
1699 | return m; | |
1700 | ||
1701 | /* Match non-NULL initialization. */ | |
837c4b78 | 1702 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1703 | gfc_matching_procptr_assignment = procptr; |
1704 | m = gfc_match_rvalue (init); | |
837c4b78 | 1705 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1706 | gfc_matching_procptr_assignment = 0; |
1707 | if (m == MATCH_ERROR) | |
1708 | return MATCH_ERROR; | |
1709 | else if (m == MATCH_NO) | |
1710 | { | |
1711 | gfc_error ("Error in pointer initialization at %C"); | |
1712 | return MATCH_ERROR; | |
1713 | } | |
1714 | ||
1715 | if (!procptr) | |
1716 | gfc_resolve_expr (*init); | |
1717 | ||
1718 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: non-NULL pointer " | |
1719 | "initialization at %C") == FAILURE) | |
1720 | return MATCH_ERROR; | |
1721 | ||
1722 | return MATCH_YES; | |
1723 | } | |
1724 | ||
1725 | ||
6de9cd9a DN |
1726 | /* Match a variable name with an optional initializer. When this |
1727 | subroutine is called, a variable is expected to be parsed next. | |
1728 | Depending on what is happening at the moment, updates either the | |
1729 | symbol table or the current interface. */ | |
1730 | ||
1731 | static match | |
949d5b72 | 1732 | variable_decl (int elem) |
6de9cd9a DN |
1733 | { |
1734 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1735 | gfc_expr *initializer, *char_len; | |
1736 | gfc_array_spec *as; | |
83d890b9 | 1737 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1738 | gfc_charlen *cl; |
e69afb29 | 1739 | bool cl_deferred; |
6de9cd9a DN |
1740 | locus var_locus; |
1741 | match m; | |
17b1d2a0 | 1742 | gfc_try t; |
83d890b9 | 1743 | gfc_symbol *sym; |
6de9cd9a DN |
1744 | |
1745 | initializer = NULL; | |
1746 | as = NULL; | |
83d890b9 | 1747 | cp_as = NULL; |
6de9cd9a DN |
1748 | |
1749 | /* When we get here, we've just matched a list of attributes and | |
1750 | maybe a type and a double colon. The next thing we expect to see | |
1751 | is the name of the symbol. */ | |
1752 | m = gfc_match_name (name); | |
1753 | if (m != MATCH_YES) | |
1754 | goto cleanup; | |
1755 | ||
63645982 | 1756 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1757 | |
1758 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1759 | m = gfc_match_array_spec (&as, true, true); |
83d890b9 AL |
1760 | if (gfc_option.flag_cray_pointer && m == MATCH_YES) |
1761 | cp_as = gfc_copy_array_spec (as); | |
1762 | else if (m == MATCH_ERROR) | |
6de9cd9a | 1763 | goto cleanup; |
25d8f0a2 | 1764 | |
6de9cd9a DN |
1765 | if (m == MATCH_NO) |
1766 | as = gfc_copy_array_spec (current_as); | |
d3a9eea2 TB |
1767 | else if (current_as) |
1768 | merge_array_spec (current_as, as, true); | |
6de9cd9a | 1769 | |
f5ca06e6 DK |
1770 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1771 | determine (and check) whether it can be implied-shape. If it | |
1772 | was parsed as assumed-size, change it because PARAMETERs can not | |
1773 | be assumed-size. */ | |
1774 | if (as) | |
1775 | { | |
1776 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1777 | { | |
1778 | m = MATCH_ERROR; | |
1779 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1780 | name, &var_locus); | |
1781 | goto cleanup; | |
1782 | } | |
1783 | ||
1784 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1785 | && current_attr.flavor == FL_PARAMETER) | |
1786 | as->type = AS_IMPLIED_SHAPE; | |
1787 | ||
1788 | if (as->type == AS_IMPLIED_SHAPE | |
1789 | && gfc_notify_std (GFC_STD_F2008, | |
1790 | "Fortran 2008: Implied-shape array at %L", | |
1791 | &var_locus) == FAILURE) | |
1792 | { | |
1793 | m = MATCH_ERROR; | |
1794 | goto cleanup; | |
1795 | } | |
1796 | } | |
1797 | ||
6de9cd9a DN |
1798 | char_len = NULL; |
1799 | cl = NULL; | |
e69afb29 | 1800 | cl_deferred = false; |
6de9cd9a DN |
1801 | |
1802 | if (current_ts.type == BT_CHARACTER) | |
1803 | { | |
e69afb29 | 1804 | switch (match_char_length (&char_len, &cl_deferred)) |
6de9cd9a DN |
1805 | { |
1806 | case MATCH_YES: | |
b76e28c6 | 1807 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1808 | |
1809 | cl->length = char_len; | |
1810 | break; | |
1811 | ||
949d5b72 | 1812 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1813 | element. Also copy assumed lengths. */ |
6de9cd9a | 1814 | case MATCH_NO: |
9b21a380 | 1815 | if (elem > 1 |
bc21d315 JW |
1816 | && (current_ts.u.cl->length == NULL |
1817 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1818 | { |
b76e28c6 | 1819 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1820 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1821 | } |
1822 | else | |
bc21d315 | 1823 | cl = current_ts.u.cl; |
949d5b72 | 1824 | |
e69afb29 SK |
1825 | cl_deferred = current_ts.deferred; |
1826 | ||
6de9cd9a DN |
1827 | break; |
1828 | ||
1829 | case MATCH_ERROR: | |
1830 | goto cleanup; | |
1831 | } | |
1832 | } | |
1833 | ||
83d890b9 | 1834 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1835 | then we want to set the type & bail out. */ |
83d890b9 AL |
1836 | if (gfc_option.flag_cray_pointer) |
1837 | { | |
1838 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1839 | if (sym != NULL && sym->attr.cray_pointee) | |
1840 | { | |
1841 | sym->ts.type = current_ts.type; | |
1842 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
1843 | sym->ts.u.cl = cl; |
1844 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
1845 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1846 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 AL |
1847 | m = MATCH_YES; |
1848 | ||
1849 | /* Check to see if we have an array specification. */ | |
1850 | if (cp_as != NULL) | |
1851 | { | |
1852 | if (sym->as != NULL) | |
1853 | { | |
e25a0da3 | 1854 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1855 | gfc_free_array_spec (cp_as); |
1856 | m = MATCH_ERROR; | |
1857 | goto cleanup; | |
1858 | } | |
1859 | else | |
1860 | { | |
1861 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1862 | gfc_internal_error ("Couldn't set pointee array spec."); | |
d51347f9 | 1863 | |
83d890b9 | 1864 | /* Fix the array spec. */ |
d51347f9 | 1865 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1866 | if (m == MATCH_ERROR) |
1867 | goto cleanup; | |
1868 | } | |
d51347f9 | 1869 | } |
83d890b9 AL |
1870 | goto cleanup; |
1871 | } | |
1872 | else | |
1873 | { | |
1874 | gfc_free_array_spec (cp_as); | |
1875 | } | |
1876 | } | |
d51347f9 | 1877 | |
3070bab4 JW |
1878 | /* Procedure pointer as function result. */ |
1879 | if (gfc_current_state () == COMP_FUNCTION | |
1880 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1881 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1882 | strcpy (name, "ppr@"); | |
1883 | ||
1884 | if (gfc_current_state () == COMP_FUNCTION | |
1885 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1886 | && gfc_current_block ()->result | |
1887 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1888 | strcpy (name, "ppr@"); | |
d51347f9 | 1889 | |
6de9cd9a DN |
1890 | /* OK, we've successfully matched the declaration. Now put the |
1891 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1892 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1893 | perfectly legal: |
1894 | ||
1895 | integer, parameter :: i = huge(i) | |
1896 | ||
1897 | This is only true for parameters or variables of a basic type. | |
1898 | For components of derived types, it is not true, so we don't | |
1899 | create a symbol for those yet. If we fail to create the symbol, | |
1900 | bail out. */ | |
1901 | if (gfc_current_state () != COMP_DERIVED | |
e69afb29 | 1902 | && build_sym (name, cl, cl_deferred, &as, &var_locus) == FAILURE) |
6de9cd9a | 1903 | { |
72af9f0b PT |
1904 | m = MATCH_ERROR; |
1905 | goto cleanup; | |
1906 | } | |
1907 | ||
6133c68a TS |
1908 | /* An interface body specifies all of the procedure's |
1909 | characteristics and these shall be consistent with those | |
1910 | specified in the procedure definition, except that the interface | |
1911 | may specify a procedure that is not pure if the procedure is | |
1912 | defined to be pure(12.3.2). */ | |
d646bbce | 1913 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
636dff67 SK |
1914 | && gfc_current_ns->proc_name |
1915 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
bc21d315 | 1916 | && current_ts.u.derived->ns != gfc_current_ns) |
5a8af0b4 PT |
1917 | { |
1918 | gfc_symtree *st; | |
bc21d315 JW |
1919 | st = gfc_find_symtree (gfc_current_ns->sym_root, current_ts.u.derived->name); |
1920 | if (!(current_ts.u.derived->attr.imported | |
5a8af0b4 | 1921 | && st != NULL |
bc21d315 | 1922 | && st->n.sym == current_ts.u.derived) |
5a8af0b4 PT |
1923 | && !gfc_current_ns->has_import_set) |
1924 | { | |
1925 | gfc_error ("the type of '%s' at %C has not been declared within the " | |
1926 | "interface", name); | |
1927 | m = MATCH_ERROR; | |
1928 | goto cleanup; | |
1929 | } | |
6de9cd9a DN |
1930 | } |
1931 | ||
1932 | /* In functions that have a RESULT variable defined, the function | |
1933 | name always refers to function calls. Therefore, the name is | |
1934 | not allowed to appear in specification statements. */ | |
1935 | if (gfc_current_state () == COMP_FUNCTION | |
1936 | && gfc_current_block () != NULL | |
1937 | && gfc_current_block ()->result != NULL | |
1938 | && gfc_current_block ()->result != gfc_current_block () | |
1939 | && strcmp (gfc_current_block ()->name, name) == 0) | |
1940 | { | |
1941 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1942 | m = MATCH_ERROR; | |
1943 | goto cleanup; | |
1944 | } | |
1945 | ||
294fbfc8 TS |
1946 | /* We allow old-style initializations of the form |
1947 | integer i /2/, j(4) /3*3, 1/ | |
1948 | (if no colon has been seen). These are different from data | |
1949 | statements in that initializers are only allowed to apply to the | |
1950 | variable immediately preceding, i.e. | |
1951 | integer i, j /1, 2/ | |
1952 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1953 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
1954 | |
1955 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1956 | { | |
1957 | if (gfc_notify_std (GFC_STD_GNU, "Extension: Old-style " | |
1958 | "initialization at %C") == FAILURE) | |
1959 | return MATCH_ERROR; | |
d51347f9 | 1960 | |
294fbfc8 TS |
1961 | return match_old_style_init (name); |
1962 | } | |
1963 | ||
6de9cd9a DN |
1964 | /* The double colon must be present in order to have initializers. |
1965 | Otherwise the statement is ambiguous with an assignment statement. */ | |
1966 | if (colon_seen) | |
1967 | { | |
1968 | if (gfc_match (" =>") == MATCH_YES) | |
1969 | { | |
6de9cd9a DN |
1970 | if (!current_attr.pointer) |
1971 | { | |
1972 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
1973 | m = MATCH_ERROR; | |
1974 | goto cleanup; | |
1975 | } | |
1976 | ||
80f95228 | 1977 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
1978 | if (m != MATCH_YES) |
1979 | goto cleanup; | |
6de9cd9a DN |
1980 | } |
1981 | else if (gfc_match_char ('=') == MATCH_YES) | |
1982 | { | |
1983 | if (current_attr.pointer) | |
1984 | { | |
636dff67 SK |
1985 | gfc_error ("Pointer initialization at %C requires '=>', " |
1986 | "not '='"); | |
6de9cd9a DN |
1987 | m = MATCH_ERROR; |
1988 | goto cleanup; | |
1989 | } | |
1990 | ||
1991 | m = gfc_match_init_expr (&initializer); | |
1992 | if (m == MATCH_NO) | |
1993 | { | |
1994 | gfc_error ("Expected an initialization expression at %C"); | |
1995 | m = MATCH_ERROR; | |
1996 | } | |
1997 | ||
ade20620 TB |
1998 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
1999 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2000 | { |
636dff67 SK |
2001 | gfc_error ("Initialization of variable at %C is not allowed in " |
2002 | "a PURE procedure"); | |
6de9cd9a DN |
2003 | m = MATCH_ERROR; |
2004 | } | |
2005 | ||
2006 | if (m != MATCH_YES) | |
2007 | goto cleanup; | |
2008 | } | |
cb44ab82 VL |
2009 | } |
2010 | ||
5046aff5 PT |
2011 | if (initializer != NULL && current_attr.allocatable |
2012 | && gfc_current_state () == COMP_DERIVED) | |
2013 | { | |
636dff67 SK |
2014 | gfc_error ("Initialization of allocatable component at %C is not " |
2015 | "allowed"); | |
5046aff5 PT |
2016 | m = MATCH_ERROR; |
2017 | goto cleanup; | |
2018 | } | |
2019 | ||
54b4ba60 | 2020 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2021 | NULL here, because we sometimes also need to check if a |
2022 | declaration *must* have an initialization expression. */ | |
2023 | if (gfc_current_state () != COMP_DERIVED) | |
2024 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2025 | else | |
54b4ba60 | 2026 | { |
5046aff5 | 2027 | if (current_ts.type == BT_DERIVED |
636dff67 | 2028 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2029 | initializer = gfc_default_initializer (¤t_ts); |
2030 | t = build_struct (name, cl, &initializer, &as); | |
2031 | } | |
6de9cd9a DN |
2032 | |
2033 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
2034 | ||
2035 | cleanup: | |
2036 | /* Free stuff up and return. */ | |
2037 | gfc_free_expr (initializer); | |
2038 | gfc_free_array_spec (as); | |
2039 | ||
2040 | return m; | |
2041 | } | |
2042 | ||
2043 | ||
b2b81a3f BM |
2044 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2045 | This assumes that the byte size is equal to the kind number for | |
2046 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2047 | |
2048 | match | |
636dff67 | 2049 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2050 | { |
2051 | match m; | |
5cf54585 | 2052 | int original_kind; |
6de9cd9a DN |
2053 | |
2054 | if (gfc_match_char ('*') != MATCH_YES) | |
2055 | return MATCH_NO; | |
2056 | ||
5cf54585 | 2057 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2058 | if (m != MATCH_YES) |
2059 | return MATCH_ERROR; | |
2060 | ||
e45b3c75 ES |
2061 | original_kind = ts->kind; |
2062 | ||
6de9cd9a | 2063 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2064 | if (ts->type == BT_COMPLEX) |
2065 | { | |
2066 | if (ts->kind % 2) | |
636dff67 SK |
2067 | { |
2068 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2069 | gfc_basic_typename (ts->type), original_kind); | |
2070 | return MATCH_ERROR; | |
2071 | } | |
e45b3c75 ES |
2072 | ts->kind /= 2; |
2073 | } | |
6de9cd9a | 2074 | |
e7a2d5fb | 2075 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2076 | { |
e45b3c75 | 2077 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2078 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2079 | return MATCH_ERROR; |
2080 | } | |
2081 | ||
df8652dc SK |
2082 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
2083 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
2084 | return MATCH_ERROR; | |
2085 | ||
6de9cd9a DN |
2086 | return MATCH_YES; |
2087 | } | |
2088 | ||
2089 | ||
2090 | /* Match a kind specification. Since kinds are generally optional, we | |
2091 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2092 | string is found, then we know we have an error. */ | |
2093 | ||
2094 | match | |
e2d29968 | 2095 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2096 | { |
e2d29968 | 2097 | locus where, loc; |
6de9cd9a DN |
2098 | gfc_expr *e; |
2099 | match m, n; | |
96ee3a4a | 2100 | char c; |
6de9cd9a DN |
2101 | const char *msg; |
2102 | ||
2103 | m = MATCH_NO; | |
e2d29968 | 2104 | n = MATCH_YES; |
6de9cd9a DN |
2105 | e = NULL; |
2106 | ||
e2d29968 PT |
2107 | where = loc = gfc_current_locus; |
2108 | ||
2109 | if (kind_expr_only) | |
2110 | goto kind_expr; | |
6de9cd9a DN |
2111 | |
2112 | if (gfc_match_char ('(') == MATCH_NO) | |
2113 | return MATCH_NO; | |
2114 | ||
2115 | /* Also gobbles optional text. */ | |
2116 | if (gfc_match (" kind = ") == MATCH_YES) | |
2117 | m = MATCH_ERROR; | |
2118 | ||
e2d29968 PT |
2119 | loc = gfc_current_locus; |
2120 | ||
2121 | kind_expr: | |
6de9cd9a | 2122 | n = gfc_match_init_expr (&e); |
e2d29968 | 2123 | |
6de9cd9a | 2124 | if (n != MATCH_YES) |
e2d29968 | 2125 | { |
1c8bcdf7 | 2126 | if (gfc_matching_function) |
e2d29968 | 2127 | { |
1c8bcdf7 PT |
2128 | /* The function kind expression might include use associated or |
2129 | imported parameters and try again after the specification | |
2130 | expressions..... */ | |
e2d29968 PT |
2131 | if (gfc_match_char (')') != MATCH_YES) |
2132 | { | |
2133 | gfc_error ("Missing right parenthesis at %C"); | |
2134 | m = MATCH_ERROR; | |
2135 | goto no_match; | |
2136 | } | |
2137 | ||
2138 | gfc_free_expr (e); | |
e2d29968 PT |
2139 | gfc_undo_symbols (); |
2140 | return MATCH_YES; | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | /* ....or else, the match is real. */ | |
2145 | if (n == MATCH_NO) | |
2146 | gfc_error ("Expected initialization expression at %C"); | |
2147 | if (n != MATCH_YES) | |
2148 | return MATCH_ERROR; | |
2149 | } | |
2150 | } | |
6de9cd9a DN |
2151 | |
2152 | if (e->rank != 0) | |
2153 | { | |
2154 | gfc_error ("Expected scalar initialization expression at %C"); | |
2155 | m = MATCH_ERROR; | |
2156 | goto no_match; | |
2157 | } | |
2158 | ||
2159 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2160 | |
6de9cd9a DN |
2161 | if (msg != NULL) |
2162 | { | |
2163 | gfc_error (msg); | |
2164 | m = MATCH_ERROR; | |
2165 | goto no_match; | |
2166 | } | |
2167 | ||
a8b3b0b6 CR |
2168 | /* Before throwing away the expression, let's see if we had a |
2169 | C interoperable kind (and store the fact). */ | |
2170 | if (e->ts.is_c_interop == 1) | |
2171 | { | |
2172 | /* Mark this as c interoperable if being declared with one | |
2173 | of the named constants from iso_c_binding. */ | |
2174 | ts->is_c_interop = e->ts.is_iso_c; | |
2175 | ts->f90_type = e->ts.f90_type; | |
2176 | } | |
2177 | ||
6de9cd9a DN |
2178 | gfc_free_expr (e); |
2179 | e = NULL; | |
2180 | ||
a8b3b0b6 CR |
2181 | /* Ignore errors to this point, if we've gotten here. This means |
2182 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2183 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2184 | { |
2185 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2186 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2187 | gfc_current_locus = where; |
2188 | return MATCH_ERROR; | |
6de9cd9a | 2189 | } |
96ee3a4a | 2190 | |
2ec855f1 TB |
2191 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2192 | if, e.g., c_double is used for COMPLEX as the standard | |
2193 | explicitly says that the kind type parameter for complex and real | |
2194 | variable is the same, i.e. c_float == c_float_complex. */ | |
2195 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2196 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2197 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
2be51762 TB |
2198 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2199 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2200 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2201 | |
96ee3a4a | 2202 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2203 | if ((c = gfc_next_ascii_char ()) != ')' |
2204 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2205 | { |
96ee3a4a TB |
2206 | if (ts->type == BT_CHARACTER) |
2207 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2208 | else | |
2209 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2210 | m = MATCH_ERROR; |
6de9cd9a | 2211 | } |
a8b3b0b6 CR |
2212 | else |
2213 | /* All tests passed. */ | |
2214 | m = MATCH_YES; | |
6de9cd9a | 2215 | |
a8b3b0b6 CR |
2216 | if(m == MATCH_ERROR) |
2217 | gfc_current_locus = where; | |
2218 | ||
2219 | /* Return what we know from the test(s). */ | |
2220 | return m; | |
6de9cd9a DN |
2221 | |
2222 | no_match: | |
2223 | gfc_free_expr (e); | |
63645982 | 2224 | gfc_current_locus = where; |
6de9cd9a DN |
2225 | return m; |
2226 | } | |
2227 | ||
2228 | ||
187de1ed FXC |
2229 | static match |
2230 | match_char_kind (int * kind, int * is_iso_c) | |
2231 | { | |
2232 | locus where; | |
2233 | gfc_expr *e; | |
2234 | match m, n; | |
2235 | const char *msg; | |
2236 | ||
2237 | m = MATCH_NO; | |
2238 | e = NULL; | |
2239 | where = gfc_current_locus; | |
2240 | ||
2241 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2242 | |
1c8bcdf7 | 2243 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2244 | { |
1c8bcdf7 PT |
2245 | /* The expression might include use-associated or imported |
2246 | parameters and try again after the specification | |
2247 | expressions. */ | |
96ee3a4a | 2248 | gfc_free_expr (e); |
96ee3a4a TB |
2249 | gfc_undo_symbols (); |
2250 | return MATCH_YES; | |
2251 | } | |
2252 | ||
187de1ed FXC |
2253 | if (n == MATCH_NO) |
2254 | gfc_error ("Expected initialization expression at %C"); | |
2255 | if (n != MATCH_YES) | |
2256 | return MATCH_ERROR; | |
2257 | ||
2258 | if (e->rank != 0) | |
2259 | { | |
2260 | gfc_error ("Expected scalar initialization expression at %C"); | |
2261 | m = MATCH_ERROR; | |
2262 | goto no_match; | |
2263 | } | |
2264 | ||
2265 | msg = gfc_extract_int (e, kind); | |
2266 | *is_iso_c = e->ts.is_iso_c; | |
2267 | if (msg != NULL) | |
2268 | { | |
2269 | gfc_error (msg); | |
2270 | m = MATCH_ERROR; | |
2271 | goto no_match; | |
2272 | } | |
2273 | ||
2274 | gfc_free_expr (e); | |
2275 | ||
2276 | /* Ignore errors to this point, if we've gotten here. This means | |
2277 | we ignore the m=MATCH_ERROR from above. */ | |
2278 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2279 | { | |
2280 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2281 | m = MATCH_ERROR; | |
2282 | } | |
2283 | else | |
2284 | /* All tests passed. */ | |
2285 | m = MATCH_YES; | |
2286 | ||
2287 | if (m == MATCH_ERROR) | |
2288 | gfc_current_locus = where; | |
2289 | ||
2290 | /* Return what we know from the test(s). */ | |
2291 | return m; | |
2292 | ||
2293 | no_match: | |
2294 | gfc_free_expr (e); | |
2295 | gfc_current_locus = where; | |
2296 | return m; | |
2297 | } | |
2298 | ||
8234e5e0 | 2299 | |
6de9cd9a DN |
2300 | /* Match the various kind/length specifications in a CHARACTER |
2301 | declaration. We don't return MATCH_NO. */ | |
2302 | ||
8234e5e0 SK |
2303 | match |
2304 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2305 | { |
187de1ed | 2306 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2307 | gfc_charlen *cl; |
2308 | gfc_expr *len; | |
2309 | match m; | |
e69afb29 | 2310 | bool deferred; |
187de1ed | 2311 | |
6de9cd9a DN |
2312 | len = NULL; |
2313 | seen_length = 0; | |
187de1ed FXC |
2314 | kind = 0; |
2315 | is_iso_c = 0; | |
e69afb29 | 2316 | deferred = false; |
6de9cd9a DN |
2317 | |
2318 | /* Try the old-style specification first. */ | |
2319 | old_char_selector = 0; | |
2320 | ||
e69afb29 | 2321 | m = match_char_length (&len, &deferred); |
6de9cd9a DN |
2322 | if (m != MATCH_NO) |
2323 | { | |
2324 | if (m == MATCH_YES) | |
2325 | old_char_selector = 1; | |
2326 | seen_length = 1; | |
2327 | goto done; | |
2328 | } | |
2329 | ||
2330 | m = gfc_match_char ('('); | |
2331 | if (m != MATCH_YES) | |
2332 | { | |
a8b3b0b6 | 2333 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2334 | goto done; |
2335 | } | |
2336 | ||
a8b3b0b6 | 2337 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2338 | if (gfc_match (" kind =") == MATCH_YES) |
2339 | { | |
187de1ed | 2340 | m = match_char_kind (&kind, &is_iso_c); |
a8b3b0b6 | 2341 | |
6de9cd9a DN |
2342 | if (m == MATCH_ERROR) |
2343 | goto done; | |
2344 | if (m == MATCH_NO) | |
2345 | goto syntax; | |
2346 | ||
2347 | if (gfc_match (" , len =") == MATCH_NO) | |
2348 | goto rparen; | |
2349 | ||
e69afb29 | 2350 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2351 | if (m == MATCH_NO) |
2352 | goto syntax; | |
2353 | if (m == MATCH_ERROR) | |
2354 | goto done; | |
2355 | seen_length = 1; | |
2356 | ||
2357 | goto rparen; | |
2358 | } | |
2359 | ||
66e4ab31 | 2360 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2361 | if (gfc_match (" len =") == MATCH_YES) |
2362 | { | |
e69afb29 | 2363 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2364 | if (m == MATCH_NO) |
2365 | goto syntax; | |
2366 | if (m == MATCH_ERROR) | |
2367 | goto done; | |
2368 | seen_length = 1; | |
2369 | ||
2370 | if (gfc_match_char (')') == MATCH_YES) | |
2371 | goto done; | |
2372 | ||
2373 | if (gfc_match (" , kind =") != MATCH_YES) | |
2374 | goto syntax; | |
2375 | ||
187de1ed FXC |
2376 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2377 | goto done; | |
6de9cd9a DN |
2378 | |
2379 | goto rparen; | |
2380 | } | |
2381 | ||
66e4ab31 | 2382 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2383 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2384 | if (m == MATCH_NO) |
2385 | goto syntax; | |
2386 | if (m == MATCH_ERROR) | |
2387 | goto done; | |
2388 | seen_length = 1; | |
2389 | ||
2390 | m = gfc_match_char (')'); | |
2391 | if (m == MATCH_YES) | |
2392 | goto done; | |
2393 | ||
2394 | if (gfc_match_char (',') != MATCH_YES) | |
2395 | goto syntax; | |
2396 | ||
a8b3b0b6 | 2397 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2398 | |
187de1ed | 2399 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2400 | if (m == MATCH_ERROR) |
2401 | goto done; | |
2402 | if (m == MATCH_NO) | |
2403 | goto syntax; | |
2404 | ||
2405 | rparen: | |
2406 | /* Require a right-paren at this point. */ | |
2407 | m = gfc_match_char (')'); | |
2408 | if (m == MATCH_YES) | |
2409 | goto done; | |
2410 | ||
2411 | syntax: | |
2412 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2413 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2414 | gfc_free_expr (len); |
2415 | return m; | |
6de9cd9a DN |
2416 | |
2417 | done: | |
a99d95a2 PT |
2418 | /* Deal with character functions after USE and IMPORT statements. */ |
2419 | if (gfc_matching_function) | |
1c8bcdf7 | 2420 | { |
a99d95a2 | 2421 | gfc_free_expr (len); |
1c8bcdf7 PT |
2422 | gfc_undo_symbols (); |
2423 | return MATCH_YES; | |
2424 | } | |
2425 | ||
6de9cd9a DN |
2426 | if (m != MATCH_YES) |
2427 | { | |
2428 | gfc_free_expr (len); | |
2429 | return m; | |
2430 | } | |
2431 | ||
2432 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2433 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2434 | |
2435 | if (seen_length == 0) | |
b7e75771 | 2436 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2437 | else |
5cd09fac | 2438 | cl->length = len; |
6de9cd9a | 2439 | |
bc21d315 | 2440 | ts->u.cl = cl; |
187de1ed | 2441 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2442 | ts->deferred = deferred; |
6de9cd9a | 2443 | |
a8b3b0b6 CR |
2444 | /* We have to know if it was a c interoperable kind so we can |
2445 | do accurate type checking of bind(c) procs, etc. */ | |
187de1ed FXC |
2446 | if (kind != 0) |
2447 | /* Mark this as c interoperable if being declared with one | |
2448 | of the named constants from iso_c_binding. */ | |
2449 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2450 | else if (len != NULL) |
187de1ed FXC |
2451 | /* Here, we might have parsed something such as: character(c_char) |
2452 | In this case, the parsing code above grabs the c_char when | |
2453 | looking for the length (line 1690, roughly). it's the last | |
2454 | testcase for parsing the kind params of a character variable. | |
2455 | However, it's not actually the length. this seems like it | |
2456 | could be an error. | |
2457 | To see if the user used a C interop kind, test the expr | |
2458 | of the so called length, and see if it's C interoperable. */ | |
2459 | ts->is_c_interop = len->ts.is_iso_c; | |
a8b3b0b6 | 2460 | |
6de9cd9a DN |
2461 | return MATCH_YES; |
2462 | } | |
2463 | ||
2464 | ||
e74f1cc8 JW |
2465 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2466 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2467 | IMPLICIT statements. |
2468 | ||
d51347f9 | 2469 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2470 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2471 | statement correctly. */ |
2472 | ||
e2d29968 | 2473 | match |
e74f1cc8 | 2474 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2475 | { |
2476 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2477 | gfc_symbol *sym; | |
2478 | match m; | |
8fc541d3 | 2479 | char c; |
0fb56814 | 2480 | bool seen_deferred_kind, matched_type; |
6de9cd9a | 2481 | |
1c8bcdf7 PT |
2482 | /* A belt and braces check that the typespec is correctly being treated |
2483 | as a deferred characteristic association. */ | |
2484 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2485 | && (gfc_current_block ()->result->ts.kind == -1) |
2486 | && (ts->kind == -1); | |
6de9cd9a | 2487 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2488 | if (seen_deferred_kind) |
2489 | ts->kind = -1; | |
6de9cd9a | 2490 | |
a8b3b0b6 CR |
2491 | /* Clear the current binding label, in case one is given. */ |
2492 | curr_binding_label[0] = '\0'; | |
2493 | ||
5f700e6d AL |
2494 | if (gfc_match (" byte") == MATCH_YES) |
2495 | { | |
0b3624f6 | 2496 | if (gfc_notify_std (GFC_STD_GNU, "Extension: BYTE type at %C") |
5f700e6d AL |
2497 | == FAILURE) |
2498 | return MATCH_ERROR; | |
2499 | ||
2500 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2501 | { | |
2502 | gfc_error ("BYTE type used at %C " | |
2503 | "is not available on the target machine"); | |
2504 | return MATCH_ERROR; | |
2505 | } | |
d51347f9 | 2506 | |
5f700e6d AL |
2507 | ts->type = BT_INTEGER; |
2508 | ts->kind = 1; | |
2509 | return MATCH_YES; | |
2510 | } | |
2511 | ||
0fb56814 TB |
2512 | |
2513 | m = gfc_match (" type ( %n", name); | |
2514 | matched_type = (m == MATCH_YES); | |
2515 | ||
2516 | if ((matched_type && strcmp ("integer", name) == 0) | |
2517 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2518 | { |
2519 | ts->type = BT_INTEGER; | |
9d64df18 | 2520 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2521 | goto get_kind; |
2522 | } | |
2523 | ||
0fb56814 TB |
2524 | if ((matched_type && strcmp ("character", name) == 0) |
2525 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2526 | { |
0fb56814 TB |
2527 | if (matched_type |
2528 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2529 | "intrinsic-type-spec at %C") == FAILURE) | |
2530 | return MATCH_ERROR; | |
2531 | ||
6de9cd9a | 2532 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2533 | if (implicit_flag == 0) |
0fb56814 | 2534 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2535 | else |
0fb56814 TB |
2536 | m = MATCH_YES; |
2537 | ||
2538 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2539 | m = MATCH_ERROR; | |
2540 | ||
2541 | return m; | |
6de9cd9a DN |
2542 | } |
2543 | ||
0fb56814 TB |
2544 | if ((matched_type && strcmp ("real", name) == 0) |
2545 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2546 | { |
2547 | ts->type = BT_REAL; | |
9d64df18 | 2548 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2549 | goto get_kind; |
2550 | } | |
2551 | ||
0fb56814 TB |
2552 | if ((matched_type |
2553 | && (strcmp ("doubleprecision", name) == 0 | |
2554 | || (strcmp ("double", name) == 0 | |
2555 | && gfc_match (" precision") == MATCH_YES))) | |
2556 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2557 | { |
0fb56814 TB |
2558 | if (matched_type |
2559 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2560 | "intrinsic-type-spec at %C") == FAILURE) | |
2561 | return MATCH_ERROR; | |
2562 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2563 | return MATCH_ERROR; | |
2564 | ||
6de9cd9a | 2565 | ts->type = BT_REAL; |
9d64df18 | 2566 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2567 | return MATCH_YES; |
2568 | } | |
2569 | ||
0fb56814 TB |
2570 | if ((matched_type && strcmp ("complex", name) == 0) |
2571 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2572 | { |
2573 | ts->type = BT_COMPLEX; | |
9d64df18 | 2574 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2575 | goto get_kind; |
2576 | } | |
2577 | ||
0fb56814 TB |
2578 | if ((matched_type |
2579 | && (strcmp ("doublecomplex", name) == 0 | |
2580 | || (strcmp ("double", name) == 0 | |
2581 | && gfc_match (" complex") == MATCH_YES))) | |
2582 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2583 | { |
0fb56814 TB |
2584 | if (gfc_notify_std (GFC_STD_GNU, "Extension: DOUBLE COMPLEX at %C") |
2585 | == FAILURE) | |
2586 | return MATCH_ERROR; | |
2587 | ||
2588 | if (matched_type | |
2589 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2590 | "intrinsic-type-spec at %C") == FAILURE) | |
2591 | return MATCH_ERROR; | |
2592 | ||
2593 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2594 | return MATCH_ERROR; |
2595 | ||
6de9cd9a | 2596 | ts->type = BT_COMPLEX; |
9d64df18 | 2597 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2598 | return MATCH_YES; |
2599 | } | |
2600 | ||
0fb56814 TB |
2601 | if ((matched_type && strcmp ("logical", name) == 0) |
2602 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2603 | { |
2604 | ts->type = BT_LOGICAL; | |
9d64df18 | 2605 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2606 | goto get_kind; |
2607 | } | |
2608 | ||
0fb56814 TB |
2609 | if (matched_type) |
2610 | m = gfc_match_char (')'); | |
2611 | ||
cf2b3c22 TB |
2612 | if (m == MATCH_YES) |
2613 | ts->type = BT_DERIVED; | |
2614 | else | |
727e8544 JW |
2615 | { |
2616 | m = gfc_match (" class ( %n )", name); | |
2617 | if (m != MATCH_YES) | |
2618 | return m; | |
cf2b3c22 | 2619 | ts->type = BT_CLASS; |
727e8544 | 2620 | |
e74f1cc8 JW |
2621 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: CLASS statement at %C") |
2622 | == FAILURE) | |
2623 | return MATCH_ERROR; | |
727e8544 | 2624 | } |
6de9cd9a | 2625 | |
1c8bcdf7 PT |
2626 | /* Defer association of the derived type until the end of the |
2627 | specification block. However, if the derived type can be | |
2628 | found, add it to the typespec. */ | |
2629 | if (gfc_matching_function) | |
e2d29968 | 2630 | { |
bc21d315 | 2631 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2632 | if (gfc_current_state () != COMP_INTERFACE |
2633 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
bc21d315 | 2634 | ts->u.derived = sym; |
e2d29968 PT |
2635 | return MATCH_YES; |
2636 | } | |
2637 | ||
2638 | /* Search for the name but allow the components to be defined later. If | |
2639 | type = -1, this typespec has been seen in a function declaration but | |
1c8bcdf7 PT |
2640 | the type could not be accessed at that point. */ |
2641 | sym = NULL; | |
e2d29968 | 2642 | if (ts->kind != -1 && gfc_get_ha_symbol (name, &sym)) |
6de9cd9a DN |
2643 | { |
2644 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2645 | return MATCH_ERROR; | |
2646 | } | |
e2d29968 PT |
2647 | else if (ts->kind == -1) |
2648 | { | |
1c8bcdf7 PT |
2649 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2650 | || gfc_current_ns->has_import_set; | |
2651 | if (gfc_find_symbol (name, NULL, iface, &sym)) | |
e2d29968 PT |
2652 | { |
2653 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2654 | return MATCH_ERROR; | |
2655 | } | |
2656 | ||
1c8bcdf7 | 2657 | ts->kind = 0; |
e2d29968 PT |
2658 | if (sym == NULL) |
2659 | return MATCH_NO; | |
2660 | } | |
6de9cd9a DN |
2661 | |
2662 | if (sym->attr.flavor != FL_DERIVED | |
231b2fcc | 2663 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
2664 | return MATCH_ERROR; |
2665 | ||
1c8bcdf7 | 2666 | gfc_set_sym_referenced (sym); |
bc21d315 | 2667 | ts->u.derived = sym; |
6de9cd9a DN |
2668 | |
2669 | return MATCH_YES; | |
2670 | ||
2671 | get_kind: | |
0fb56814 TB |
2672 | if (matched_type |
2673 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2674 | "intrinsic-type-spec at %C") == FAILURE) | |
2675 | return MATCH_ERROR; | |
2676 | ||
6de9cd9a DN |
2677 | /* For all types except double, derived and character, look for an |
2678 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2679 | if (implicit_flag == 1) |
0fb56814 TB |
2680 | { |
2681 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2682 | return MATCH_ERROR; | |
2683 | ||
2684 | return MATCH_YES; | |
2685 | } | |
6de9cd9a | 2686 | |
0ff0dfbf TS |
2687 | if (gfc_current_form == FORM_FREE) |
2688 | { | |
0b3624f6 SK |
2689 | c = gfc_peek_ascii_char (); |
2690 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 2691 | && c != ':' && c != ',') |
0fb56814 TB |
2692 | { |
2693 | if (matched_type && c == ')') | |
2694 | { | |
2695 | gfc_next_ascii_char (); | |
2696 | return MATCH_YES; | |
2697 | } | |
2698 | return MATCH_NO; | |
2699 | } | |
0ff0dfbf TS |
2700 | } |
2701 | ||
e2d29968 | 2702 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a DN |
2703 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2704 | m = gfc_match_old_kind_spec (ts); | |
2705 | ||
0fb56814 TB |
2706 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2707 | return MATCH_ERROR; | |
2708 | ||
1c8bcdf7 PT |
2709 | /* Defer association of the KIND expression of function results |
2710 | until after USE and IMPORT statements. */ | |
2711 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2712 | || gfc_matching_function) | |
2713 | return MATCH_YES; | |
2714 | ||
6de9cd9a DN |
2715 | if (m == MATCH_NO) |
2716 | m = MATCH_YES; /* No kind specifier found. */ | |
2717 | ||
2718 | return m; | |
2719 | } | |
2720 | ||
2721 | ||
e5ddaa24 TS |
2722 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2723 | already matched in parse.c, or we would not end up here in the | |
2724 | first place. So the only thing we need to check, is if there is | |
2725 | trailing garbage. If not, the match is successful. */ | |
2726 | ||
2727 | match | |
2728 | gfc_match_implicit_none (void) | |
2729 | { | |
e5ddaa24 TS |
2730 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2731 | } | |
2732 | ||
2733 | ||
2734 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2735 | ||
2736 | static match | |
1107b970 | 2737 | match_implicit_range (void) |
e5ddaa24 | 2738 | { |
8fc541d3 FXC |
2739 | char c, c1, c2; |
2740 | int inner; | |
e5ddaa24 TS |
2741 | locus cur_loc; |
2742 | ||
2743 | cur_loc = gfc_current_locus; | |
2744 | ||
2745 | gfc_gobble_whitespace (); | |
8fc541d3 | 2746 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2747 | if (c != '(') |
2748 | { | |
2749 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2750 | goto bad; | |
2751 | } | |
2752 | ||
2753 | inner = 1; | |
2754 | while (inner) | |
2755 | { | |
2756 | gfc_gobble_whitespace (); | |
8fc541d3 | 2757 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2758 | if (!ISALPHA (c1)) |
2759 | goto bad; | |
2760 | ||
2761 | gfc_gobble_whitespace (); | |
8fc541d3 | 2762 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2763 | |
2764 | switch (c) | |
2765 | { | |
2766 | case ')': | |
66e4ab31 | 2767 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2768 | |
2769 | case ',': | |
2770 | c2 = c1; | |
2771 | break; | |
2772 | ||
2773 | case '-': | |
2774 | gfc_gobble_whitespace (); | |
8fc541d3 | 2775 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2776 | if (!ISALPHA (c2)) |
2777 | goto bad; | |
2778 | ||
2779 | gfc_gobble_whitespace (); | |
8fc541d3 | 2780 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2781 | |
2782 | if ((c != ',') && (c != ')')) | |
2783 | goto bad; | |
2784 | if (c == ')') | |
2785 | inner = 0; | |
2786 | ||
2787 | break; | |
2788 | ||
2789 | default: | |
2790 | goto bad; | |
2791 | } | |
2792 | ||
2793 | if (c1 > c2) | |
2794 | { | |
2795 | gfc_error ("Letters must be in alphabetic order in " | |
2796 | "IMPLICIT statement at %C"); | |
2797 | goto bad; | |
2798 | } | |
2799 | ||
2800 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
2801 | implicits from this IMPLICIT statement. We do not check for |
2802 | conflicts with whatever earlier IMPLICIT statements may have | |
2803 | set. This is done when we've successfully finished matching | |
2804 | the current one. */ | |
1107b970 | 2805 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
e5ddaa24 TS |
2806 | goto bad; |
2807 | } | |
2808 | ||
2809 | return MATCH_YES; | |
2810 | ||
2811 | bad: | |
2812 | gfc_syntax_error (ST_IMPLICIT); | |
2813 | ||
2814 | gfc_current_locus = cur_loc; | |
2815 | return MATCH_ERROR; | |
2816 | } | |
2817 | ||
2818 | ||
2819 | /* Match an IMPLICIT statement, storing the types for | |
2820 | gfc_set_implicit() if the statement is accepted by the parser. | |
2821 | There is a strange looking, but legal syntactic construction | |
2822 | possible. It looks like: | |
2823 | ||
2824 | IMPLICIT INTEGER (a-b) (c-d) | |
2825 | ||
2826 | This is legal if "a-b" is a constant expression that happens to | |
2827 | equal one of the legal kinds for integers. The real problem | |
2828 | happens with an implicit specification that looks like: | |
2829 | ||
2830 | IMPLICIT INTEGER (a-b) | |
2831 | ||
2832 | In this case, a typespec matcher that is "greedy" (as most of the | |
2833 | matchers are) gobbles the character range as a kindspec, leaving | |
2834 | nothing left. We therefore have to go a bit more slowly in the | |
2835 | matching process by inhibiting the kindspec checking during | |
2836 | typespec matching and checking for a kind later. */ | |
2837 | ||
2838 | match | |
2839 | gfc_match_implicit (void) | |
2840 | { | |
2841 | gfc_typespec ts; | |
2842 | locus cur_loc; | |
8fc541d3 | 2843 | char c; |
e5ddaa24 TS |
2844 | match m; |
2845 | ||
44000dbb JD |
2846 | gfc_clear_ts (&ts); |
2847 | ||
e5ddaa24 TS |
2848 | /* We don't allow empty implicit statements. */ |
2849 | if (gfc_match_eos () == MATCH_YES) | |
2850 | { | |
2851 | gfc_error ("Empty IMPLICIT statement at %C"); | |
2852 | return MATCH_ERROR; | |
2853 | } | |
2854 | ||
e5ddaa24 TS |
2855 | do |
2856 | { | |
1107b970 PB |
2857 | /* First cleanup. */ |
2858 | gfc_clear_new_implicit (); | |
2859 | ||
e5ddaa24 | 2860 | /* A basic type is mandatory here. */ |
e74f1cc8 | 2861 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
2862 | if (m == MATCH_ERROR) |
2863 | goto error; | |
2864 | if (m == MATCH_NO) | |
2865 | goto syntax; | |
2866 | ||
2867 | cur_loc = gfc_current_locus; | |
1107b970 | 2868 | m = match_implicit_range (); |
e5ddaa24 TS |
2869 | |
2870 | if (m == MATCH_YES) | |
2871 | { | |
1107b970 | 2872 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 2873 | gfc_gobble_whitespace (); |
8fc541d3 | 2874 | c = gfc_next_ascii_char (); |
e5ddaa24 | 2875 | if ((c == '\n') || (c == ',')) |
1107b970 PB |
2876 | { |
2877 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 2878 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 2879 | { |
9d64df18 | 2880 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 2881 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
2882 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
2883 | NULL, 1); | |
1107b970 PB |
2884 | } |
2885 | ||
2886 | /* Record the Successful match. */ | |
2887 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
2888 | return MATCH_ERROR; | |
2889 | continue; | |
2890 | } | |
e5ddaa24 TS |
2891 | |
2892 | gfc_current_locus = cur_loc; | |
2893 | } | |
2894 | ||
1107b970 PB |
2895 | /* Discard the (incorrectly) matched range. */ |
2896 | gfc_clear_new_implicit (); | |
2897 | ||
2898 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
2899 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 2900 | m = gfc_match_char_spec (&ts); |
1107b970 | 2901 | else |
e5ddaa24 | 2902 | { |
e2d29968 | 2903 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 2904 | if (m == MATCH_NO) |
1107b970 PB |
2905 | { |
2906 | m = gfc_match_old_kind_spec (&ts); | |
2907 | if (m == MATCH_ERROR) | |
2908 | goto error; | |
2909 | if (m == MATCH_NO) | |
2910 | goto syntax; | |
2911 | } | |
e5ddaa24 | 2912 | } |
1107b970 PB |
2913 | if (m == MATCH_ERROR) |
2914 | goto error; | |
e5ddaa24 | 2915 | |
1107b970 | 2916 | m = match_implicit_range (); |
e5ddaa24 TS |
2917 | if (m == MATCH_ERROR) |
2918 | goto error; | |
2919 | if (m == MATCH_NO) | |
2920 | goto syntax; | |
2921 | ||
2922 | gfc_gobble_whitespace (); | |
8fc541d3 | 2923 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2924 | if ((c != '\n') && (c != ',')) |
2925 | goto syntax; | |
2926 | ||
1107b970 PB |
2927 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
2928 | return MATCH_ERROR; | |
e5ddaa24 TS |
2929 | } |
2930 | while (c == ','); | |
2931 | ||
1107b970 | 2932 | return MATCH_YES; |
e5ddaa24 TS |
2933 | |
2934 | syntax: | |
2935 | gfc_syntax_error (ST_IMPLICIT); | |
2936 | ||
2937 | error: | |
2938 | return MATCH_ERROR; | |
2939 | } | |
2940 | ||
66e4ab31 | 2941 | |
8998be20 TB |
2942 | match |
2943 | gfc_match_import (void) | |
2944 | { | |
2945 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2946 | match m; | |
2947 | gfc_symbol *sym; | |
2948 | gfc_symtree *st; | |
2949 | ||
66e4ab31 SK |
2950 | if (gfc_current_ns->proc_name == NULL |
2951 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
2952 | { |
2953 | gfc_error ("IMPORT statement at %C only permitted in " | |
2954 | "an INTERFACE body"); | |
2955 | return MATCH_ERROR; | |
2956 | } | |
2957 | ||
636dff67 | 2958 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: IMPORT statement at %C") |
8998be20 TB |
2959 | == FAILURE) |
2960 | return MATCH_ERROR; | |
2961 | ||
2962 | if (gfc_match_eos () == MATCH_YES) | |
2963 | { | |
2964 | /* All host variables should be imported. */ | |
2965 | gfc_current_ns->has_import_set = 1; | |
2966 | return MATCH_YES; | |
2967 | } | |
2968 | ||
2969 | if (gfc_match (" ::") == MATCH_YES) | |
2970 | { | |
2971 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
2972 | { |
2973 | gfc_error ("Expecting list of named entities at %C"); | |
2974 | return MATCH_ERROR; | |
2975 | } | |
8998be20 TB |
2976 | } |
2977 | ||
2978 | for(;;) | |
2979 | { | |
2980 | m = gfc_match (" %n", name); | |
2981 | switch (m) | |
2982 | { | |
2983 | case MATCH_YES: | |
36d3fb4c | 2984 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 2985 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
2986 | { |
2987 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2988 | return MATCH_ERROR; | |
2989 | } | |
2990 | else if (gfc_current_ns->proc_name->ns->parent != NULL | |
66e4ab31 SK |
2991 | && gfc_find_symbol (name, |
2992 | gfc_current_ns->proc_name->ns->parent, | |
2993 | 1, &sym)) | |
636dff67 SK |
2994 | { |
2995 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2996 | return MATCH_ERROR; | |
2997 | } | |
2998 | ||
2999 | if (sym == NULL) | |
3000 | { | |
3001 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3002 | "at %C - does not exist.", name); | |
3003 | return MATCH_ERROR; | |
3004 | } | |
3005 | ||
d51347f9 | 3006 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
636dff67 SK |
3007 | { |
3008 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3009 | "at %C.", name); | |
3010 | goto next_item; | |
3011 | } | |
3012 | ||
bc2a4733 | 3013 | st = gfc_new_symtree (&gfc_current_ns->sym_root, sym->name); |
636dff67 SK |
3014 | st->n.sym = sym; |
3015 | sym->refs++; | |
5a8af0b4 | 3016 | sym->attr.imported = 1; |
8998be20 TB |
3017 | |
3018 | goto next_item; | |
3019 | ||
3020 | case MATCH_NO: | |
3021 | break; | |
3022 | ||
3023 | case MATCH_ERROR: | |
3024 | return MATCH_ERROR; | |
3025 | } | |
3026 | ||
3027 | next_item: | |
3028 | if (gfc_match_eos () == MATCH_YES) | |
3029 | break; | |
3030 | if (gfc_match_char (',') != MATCH_YES) | |
3031 | goto syntax; | |
3032 | } | |
3033 | ||
3034 | return MATCH_YES; | |
3035 | ||
3036 | syntax: | |
3037 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3038 | return MATCH_ERROR; | |
3039 | } | |
e5ddaa24 | 3040 | |
66e4ab31 | 3041 | |
f2449db4 RS |
3042 | /* A minimal implementation of gfc_match without whitespace, escape |
3043 | characters or variable arguments. Returns true if the next | |
3044 | characters match the TARGET template exactly. */ | |
3045 | ||
3046 | static bool | |
3047 | match_string_p (const char *target) | |
3048 | { | |
3049 | const char *p; | |
3050 | ||
3051 | for (p = target; *p; p++) | |
8fc541d3 | 3052 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3053 | return false; |
3054 | return true; | |
3055 | } | |
3056 | ||
6de9cd9a DN |
3057 | /* Matches an attribute specification including array specs. If |
3058 | successful, leaves the variables current_attr and current_as | |
3059 | holding the specification. Also sets the colon_seen variable for | |
3060 | later use by matchers associated with initializations. | |
3061 | ||
3062 | This subroutine is a little tricky in the sense that we don't know | |
3063 | if we really have an attr-spec until we hit the double colon. | |
3064 | Until that time, we can only return MATCH_NO. This forces us to | |
3065 | check for duplicate specification at this level. */ | |
3066 | ||
3067 | static match | |
3068 | match_attr_spec (void) | |
3069 | { | |
6de9cd9a DN |
3070 | /* Modifiers that can exist in a type statement. */ |
3071 | typedef enum | |
3072 | { GFC_DECL_BEGIN = 0, | |
3073 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3074 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3075 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3076 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3077 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3078 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
6de9cd9a DN |
3079 | } |
3080 | decl_types; | |
3081 | ||
3082 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3083 | #define NUM_DECL GFC_DECL_END | |
3084 | ||
6de9cd9a DN |
3085 | locus start, seen_at[NUM_DECL]; |
3086 | int seen[NUM_DECL]; | |
09639a83 | 3087 | unsigned int d; |
6de9cd9a DN |
3088 | const char *attr; |
3089 | match m; | |
17b1d2a0 | 3090 | gfc_try t; |
6de9cd9a DN |
3091 | |
3092 | gfc_clear_attr (¤t_attr); | |
63645982 | 3093 | start = gfc_current_locus; |
6de9cd9a DN |
3094 | |
3095 | current_as = NULL; | |
3096 | colon_seen = 0; | |
3097 | ||
3098 | /* See if we get all of the keywords up to the final double colon. */ | |
3099 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3100 | seen[d] = 0; | |
3101 | ||
3102 | for (;;) | |
3103 | { | |
8fc541d3 | 3104 | char ch; |
a8b3b0b6 | 3105 | |
f2449db4 RS |
3106 | d = DECL_NONE; |
3107 | gfc_gobble_whitespace (); | |
3108 | ||
8fc541d3 | 3109 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3110 | if (ch == ':') |
3111 | { | |
3112 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3113 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3114 | break; |
3115 | } | |
3116 | else if (ch == ',') | |
a8b3b0b6 | 3117 | { |
a8b3b0b6 | 3118 | gfc_gobble_whitespace (); |
8fc541d3 | 3119 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3120 | { |
f2449db4 | 3121 | case 'a': |
1eee5628 TB |
3122 | gfc_next_ascii_char (); |
3123 | switch (gfc_next_ascii_char ()) | |
3124 | { | |
3125 | case 'l': | |
3126 | if (match_string_p ("locatable")) | |
3127 | { | |
3128 | /* Matched "allocatable". */ | |
3129 | d = DECL_ALLOCATABLE; | |
3130 | } | |
3131 | break; | |
3132 | ||
3133 | case 's': | |
3134 | if (match_string_p ("ynchronous")) | |
3135 | { | |
3136 | /* Matched "asynchronous". */ | |
3137 | d = DECL_ASYNCHRONOUS; | |
3138 | } | |
3139 | break; | |
3140 | } | |
fe4e525c | 3141 | break; |
f2449db4 RS |
3142 | |
3143 | case 'b': | |
a8b3b0b6 | 3144 | /* Try and match the bind(c). */ |
1eabf70a | 3145 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3146 | if (m == MATCH_YES) |
a8b3b0b6 | 3147 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3148 | else if (m == MATCH_ERROR) |
3149 | goto cleanup; | |
f2449db4 RS |
3150 | break; |
3151 | ||
be59db2d | 3152 | case 'c': |
fe4e525c TB |
3153 | gfc_next_ascii_char (); |
3154 | if ('o' != gfc_next_ascii_char ()) | |
3155 | break; | |
3156 | switch (gfc_next_ascii_char ()) | |
3157 | { | |
3158 | case 'd': | |
3159 | if (match_string_p ("imension")) | |
3160 | { | |
3161 | d = DECL_CODIMENSION; | |
3162 | break; | |
3163 | } | |
3164 | case 'n': | |
3165 | if (match_string_p ("tiguous")) | |
3166 | { | |
3167 | d = DECL_CONTIGUOUS; | |
3168 | break; | |
3169 | } | |
3170 | } | |
be59db2d TB |
3171 | break; |
3172 | ||
f2449db4 RS |
3173 | case 'd': |
3174 | if (match_string_p ("dimension")) | |
3175 | d = DECL_DIMENSION; | |
3176 | break; | |
3177 | ||
3178 | case 'e': | |
3179 | if (match_string_p ("external")) | |
3180 | d = DECL_EXTERNAL; | |
3181 | break; | |
3182 | ||
3183 | case 'i': | |
3184 | if (match_string_p ("int")) | |
3185 | { | |
8fc541d3 | 3186 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3187 | if (ch == 'e') |
3188 | { | |
3189 | if (match_string_p ("nt")) | |
3190 | { | |
3191 | /* Matched "intent". */ | |
3192 | /* TODO: Call match_intent_spec from here. */ | |
3193 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3194 | d = DECL_INOUT; | |
3195 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3196 | d = DECL_IN; | |
3197 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3198 | d = DECL_OUT; | |
3199 | } | |
3200 | } | |
3201 | else if (ch == 'r') | |
3202 | { | |
3203 | if (match_string_p ("insic")) | |
3204 | { | |
3205 | /* Matched "intrinsic". */ | |
3206 | d = DECL_INTRINSIC; | |
3207 | } | |
3208 | } | |
3209 | } | |
3210 | break; | |
3211 | ||
3212 | case 'o': | |
3213 | if (match_string_p ("optional")) | |
3214 | d = DECL_OPTIONAL; | |
3215 | break; | |
3216 | ||
3217 | case 'p': | |
8fc541d3 FXC |
3218 | gfc_next_ascii_char (); |
3219 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3220 | { |
3221 | case 'a': | |
3222 | if (match_string_p ("rameter")) | |
3223 | { | |
3224 | /* Matched "parameter". */ | |
3225 | d = DECL_PARAMETER; | |
3226 | } | |
3227 | break; | |
3228 | ||
3229 | case 'o': | |
3230 | if (match_string_p ("inter")) | |
3231 | { | |
3232 | /* Matched "pointer". */ | |
3233 | d = DECL_POINTER; | |
3234 | } | |
3235 | break; | |
3236 | ||
3237 | case 'r': | |
8fc541d3 | 3238 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3239 | if (ch == 'i') |
3240 | { | |
3241 | if (match_string_p ("vate")) | |
3242 | { | |
3243 | /* Matched "private". */ | |
3244 | d = DECL_PRIVATE; | |
3245 | } | |
3246 | } | |
3247 | else if (ch == 'o') | |
3248 | { | |
3249 | if (match_string_p ("tected")) | |
3250 | { | |
3251 | /* Matched "protected". */ | |
3252 | d = DECL_PROTECTED; | |
3253 | } | |
3254 | } | |
3255 | break; | |
3256 | ||
3257 | case 'u': | |
3258 | if (match_string_p ("blic")) | |
3259 | { | |
3260 | /* Matched "public". */ | |
3261 | d = DECL_PUBLIC; | |
3262 | } | |
3263 | break; | |
3264 | } | |
3265 | break; | |
3266 | ||
3267 | case 's': | |
3268 | if (match_string_p ("save")) | |
3269 | d = DECL_SAVE; | |
3270 | break; | |
3271 | ||
3272 | case 't': | |
3273 | if (match_string_p ("target")) | |
3274 | d = DECL_TARGET; | |
3275 | break; | |
3276 | ||
3277 | case 'v': | |
8fc541d3 FXC |
3278 | gfc_next_ascii_char (); |
3279 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3280 | if (ch == 'a') |
3281 | { | |
3282 | if (match_string_p ("lue")) | |
3283 | { | |
3284 | /* Matched "value". */ | |
3285 | d = DECL_VALUE; | |
3286 | } | |
3287 | } | |
3288 | else if (ch == 'o') | |
3289 | { | |
3290 | if (match_string_p ("latile")) | |
3291 | { | |
3292 | /* Matched "volatile". */ | |
3293 | d = DECL_VOLATILE; | |
3294 | } | |
3295 | } | |
3296 | break; | |
a8b3b0b6 CR |
3297 | } |
3298 | } | |
d468bcdb | 3299 | |
f2449db4 RS |
3300 | /* No double colon and no recognizable decl_type, so assume that |
3301 | we've been looking at something else the whole time. */ | |
3302 | if (d == DECL_NONE) | |
3303 | { | |
3304 | m = MATCH_NO; | |
3305 | goto cleanup; | |
3306 | } | |
d51347f9 | 3307 | |
acb388a0 JD |
3308 | /* Check to make sure any parens are paired up correctly. */ |
3309 | if (gfc_match_parens () == MATCH_ERROR) | |
3310 | { | |
3311 | m = MATCH_ERROR; | |
3312 | goto cleanup; | |
3313 | } | |
3314 | ||
6de9cd9a | 3315 | seen[d]++; |
63645982 | 3316 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3317 | |
d3a9eea2 | 3318 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3319 | { |
d3a9eea2 | 3320 | gfc_array_spec *as = NULL; |
6de9cd9a | 3321 | |
d3a9eea2 TB |
3322 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3323 | d == DECL_CODIMENSION); | |
3324 | ||
3325 | if (current_as == NULL) | |
3326 | current_as = as; | |
3327 | else if (m == MATCH_YES) | |
6de9cd9a | 3328 | { |
d3a9eea2 TB |
3329 | merge_array_spec (as, current_as, false); |
3330 | gfc_free (as); | |
6de9cd9a DN |
3331 | } |
3332 | ||
be59db2d TB |
3333 | if (m == MATCH_NO) |
3334 | { | |
d3a9eea2 TB |
3335 | if (d == DECL_CODIMENSION) |
3336 | gfc_error ("Missing codimension specification at %C"); | |
3337 | else | |
3338 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3339 | m = MATCH_ERROR; |
3340 | } | |
3341 | ||
3342 | if (m == MATCH_ERROR) | |
3343 | goto cleanup; | |
3344 | } | |
6de9cd9a DN |
3345 | } |
3346 | ||
6de9cd9a DN |
3347 | /* Since we've seen a double colon, we have to be looking at an |
3348 | attr-spec. This means that we can now issue errors. */ | |
3349 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3350 | if (seen[d] > 1) | |
3351 | { | |
3352 | switch (d) | |
3353 | { | |
3354 | case DECL_ALLOCATABLE: | |
3355 | attr = "ALLOCATABLE"; | |
3356 | break; | |
1eee5628 TB |
3357 | case DECL_ASYNCHRONOUS: |
3358 | attr = "ASYNCHRONOUS"; | |
3359 | break; | |
be59db2d TB |
3360 | case DECL_CODIMENSION: |
3361 | attr = "CODIMENSION"; | |
3362 | break; | |
fe4e525c TB |
3363 | case DECL_CONTIGUOUS: |
3364 | attr = "CONTIGUOUS"; | |
3365 | break; | |
6de9cd9a DN |
3366 | case DECL_DIMENSION: |
3367 | attr = "DIMENSION"; | |
3368 | break; | |
3369 | case DECL_EXTERNAL: | |
3370 | attr = "EXTERNAL"; | |
3371 | break; | |
3372 | case DECL_IN: | |
3373 | attr = "INTENT (IN)"; | |
3374 | break; | |
3375 | case DECL_OUT: | |
3376 | attr = "INTENT (OUT)"; | |
3377 | break; | |
3378 | case DECL_INOUT: | |
3379 | attr = "INTENT (IN OUT)"; | |
3380 | break; | |
3381 | case DECL_INTRINSIC: | |
3382 | attr = "INTRINSIC"; | |
3383 | break; | |
3384 | case DECL_OPTIONAL: | |
3385 | attr = "OPTIONAL"; | |
3386 | break; | |
3387 | case DECL_PARAMETER: | |
3388 | attr = "PARAMETER"; | |
3389 | break; | |
3390 | case DECL_POINTER: | |
3391 | attr = "POINTER"; | |
3392 | break; | |
ee7e677f TB |
3393 | case DECL_PROTECTED: |
3394 | attr = "PROTECTED"; | |
3395 | break; | |
6de9cd9a DN |
3396 | case DECL_PRIVATE: |
3397 | attr = "PRIVATE"; | |
3398 | break; | |
3399 | case DECL_PUBLIC: | |
3400 | attr = "PUBLIC"; | |
3401 | break; | |
3402 | case DECL_SAVE: | |
3403 | attr = "SAVE"; | |
3404 | break; | |
3405 | case DECL_TARGET: | |
3406 | attr = "TARGET"; | |
3407 | break; | |
a8b3b0b6 CR |
3408 | case DECL_IS_BIND_C: |
3409 | attr = "IS_BIND_C"; | |
3410 | break; | |
3411 | case DECL_VALUE: | |
3412 | attr = "VALUE"; | |
3413 | break; | |
775e6c3a TB |
3414 | case DECL_VOLATILE: |
3415 | attr = "VOLATILE"; | |
3416 | break; | |
6de9cd9a | 3417 | default: |
66e4ab31 | 3418 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3419 | } |
3420 | ||
3421 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3422 | m = MATCH_ERROR; | |
3423 | goto cleanup; | |
3424 | } | |
3425 | ||
3426 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3427 | to the current attribute. */ | |
3428 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3429 | { | |
3430 | if (seen[d] == 0) | |
3431 | continue; | |
3432 | ||
3433 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3434 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3435 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3436 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3437 | { |
5046aff5 PT |
3438 | if (d == DECL_ALLOCATABLE) |
3439 | { | |
636dff67 SK |
3440 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ALLOCATABLE " |
3441 | "attribute at %C in a TYPE definition") | |
d51347f9 | 3442 | == FAILURE) |
5046aff5 PT |
3443 | { |
3444 | m = MATCH_ERROR; | |
3445 | goto cleanup; | |
3446 | } | |
636dff67 SK |
3447 | } |
3448 | else | |
5046aff5 PT |
3449 | { |
3450 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3451 | &seen_at[d]); |
5046aff5 PT |
3452 | m = MATCH_ERROR; |
3453 | goto cleanup; | |
3454 | } | |
6de9cd9a DN |
3455 | } |
3456 | ||
4213f93b | 3457 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3458 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3459 | { |
3460 | if (d == DECL_PRIVATE) | |
3461 | attr = "PRIVATE"; | |
3462 | else | |
3463 | attr = "PUBLIC"; | |
d51347f9 TB |
3464 | if (gfc_current_state () == COMP_DERIVED |
3465 | && gfc_state_stack->previous | |
3466 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3467 | { | |
3468 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Attribute %s " | |
3469 | "at %L in a TYPE definition", attr, | |
3470 | &seen_at[d]) | |
3471 | == FAILURE) | |
3472 | { | |
3473 | m = MATCH_ERROR; | |
3474 | goto cleanup; | |
3475 | } | |
3476 | } | |
3477 | else | |
3478 | { | |
3479 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3480 | "specification part of a module", attr, &seen_at[d]); | |
3481 | m = MATCH_ERROR; | |
3482 | goto cleanup; | |
3483 | } | |
4213f93b PT |
3484 | } |
3485 | ||
6de9cd9a DN |
3486 | switch (d) |
3487 | { | |
3488 | case DECL_ALLOCATABLE: | |
3489 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3490 | break; | |
3491 | ||
1eee5628 TB |
3492 | case DECL_ASYNCHRONOUS: |
3493 | if (gfc_notify_std (GFC_STD_F2003, | |
3494 | "Fortran 2003: ASYNCHRONOUS attribute at %C") | |
3495 | == FAILURE) | |
3496 | t = FAILURE; | |
3497 | else | |
3498 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3499 | break; | |
3500 | ||
be59db2d TB |
3501 | case DECL_CODIMENSION: |
3502 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3503 | break; | |
3504 | ||
fe4e525c TB |
3505 | case DECL_CONTIGUOUS: |
3506 | if (gfc_notify_std (GFC_STD_F2008, | |
3507 | "Fortran 2008: CONTIGUOUS attribute at %C") | |
3508 | == FAILURE) | |
3509 | t = FAILURE; | |
3510 | else | |
3511 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3512 | break; | |
3513 | ||
6de9cd9a | 3514 | case DECL_DIMENSION: |
231b2fcc | 3515 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3516 | break; |
3517 | ||
3518 | case DECL_EXTERNAL: | |
3519 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3520 | break; | |
3521 | ||
3522 | case DECL_IN: | |
3523 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3524 | break; | |
3525 | ||
3526 | case DECL_OUT: | |
3527 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3528 | break; | |
3529 | ||
3530 | case DECL_INOUT: | |
3531 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3532 | break; | |
3533 | ||
3534 | case DECL_INTRINSIC: | |
3535 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3536 | break; | |
3537 | ||
3538 | case DECL_OPTIONAL: | |
3539 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3540 | break; | |
3541 | ||
3542 | case DECL_PARAMETER: | |
231b2fcc | 3543 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3544 | break; |
3545 | ||
3546 | case DECL_POINTER: | |
3547 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3548 | break; | |
3549 | ||
ee7e677f TB |
3550 | case DECL_PROTECTED: |
3551 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3552 | { | |
3553 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3554 | "part of a module"); | |
3555 | t = FAILURE; | |
3556 | break; | |
3557 | } | |
3558 | ||
636dff67 SK |
3559 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED " |
3560 | "attribute at %C") | |
ee7e677f TB |
3561 | == FAILURE) |
3562 | t = FAILURE; | |
3563 | else | |
3564 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3565 | break; | |
3566 | ||
6de9cd9a | 3567 | case DECL_PRIVATE: |
231b2fcc TS |
3568 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3569 | &seen_at[d]); | |
6de9cd9a DN |
3570 | break; |
3571 | ||
3572 | case DECL_PUBLIC: | |
231b2fcc TS |
3573 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3574 | &seen_at[d]); | |
6de9cd9a DN |
3575 | break; |
3576 | ||
3577 | case DECL_SAVE: | |
80f95228 | 3578 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3579 | break; |
3580 | ||
3581 | case DECL_TARGET: | |
3582 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3583 | break; | |
3584 | ||
a8b3b0b6 CR |
3585 | case DECL_IS_BIND_C: |
3586 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3587 | break; | |
3588 | ||
06469efd | 3589 | case DECL_VALUE: |
636dff67 SK |
3590 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE attribute " |
3591 | "at %C") | |
06469efd PT |
3592 | == FAILURE) |
3593 | t = FAILURE; | |
3594 | else | |
3595 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3596 | break; | |
3597 | ||
775e6c3a TB |
3598 | case DECL_VOLATILE: |
3599 | if (gfc_notify_std (GFC_STD_F2003, | |
636dff67 | 3600 | "Fortran 2003: VOLATILE attribute at %C") |
775e6c3a TB |
3601 | == FAILURE) |
3602 | t = FAILURE; | |
3603 | else | |
3604 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3605 | break; | |
3606 | ||
6de9cd9a DN |
3607 | default: |
3608 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3609 | } | |
3610 | ||
3611 | if (t == FAILURE) | |
3612 | { | |
3613 | m = MATCH_ERROR; | |
3614 | goto cleanup; | |
3615 | } | |
3616 | } | |
3617 | ||
80f95228 JW |
3618 | /* Module variables implicitly have the SAVE attribute. */ |
3619 | if (gfc_current_state () == COMP_MODULE && !current_attr.save) | |
3620 | current_attr.save = SAVE_IMPLICIT; | |
3621 | ||
6de9cd9a DN |
3622 | colon_seen = 1; |
3623 | return MATCH_YES; | |
3624 | ||
3625 | cleanup: | |
63645982 | 3626 | gfc_current_locus = start; |
6de9cd9a DN |
3627 | gfc_free_array_spec (current_as); |
3628 | current_as = NULL; | |
3629 | return m; | |
3630 | } | |
3631 | ||
3632 | ||
a8b3b0b6 CR |
3633 | /* Set the binding label, dest_label, either with the binding label |
3634 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3635 | will be the symbol name in all lower case, as required by the draft | |
3636 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3637 | there is more than one argument (num_idents), it is an error. */ | |
3638 | ||
17b1d2a0 | 3639 | gfc_try |
a8b3b0b6 CR |
3640 | set_binding_label (char *dest_label, const char *sym_name, int num_idents) |
3641 | { | |
ad4a2f64 | 3642 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 3643 | { |
ad4a2f64 TB |
3644 | gfc_error ("Multiple identifiers provided with " |
3645 | "single NAME= specifier at %C"); | |
3646 | return FAILURE; | |
3647 | } | |
a8b3b0b6 | 3648 | |
ad4a2f64 TB |
3649 | if (curr_binding_label[0] != '\0') |
3650 | { | |
a8b3b0b6 | 3651 | /* Binding label given; store in temp holder til have sym. */ |
c5b5a17a | 3652 | strcpy (dest_label, curr_binding_label); |
a8b3b0b6 CR |
3653 | } |
3654 | else | |
3655 | { | |
3656 | /* No binding label given, and the NAME= specifier did not exist, | |
3657 | which means there was no NAME="". */ | |
3658 | if (sym_name != NULL && has_name_equals == 0) | |
c5b5a17a | 3659 | strcpy (dest_label, sym_name); |
a8b3b0b6 CR |
3660 | } |
3661 | ||
3662 | return SUCCESS; | |
3663 | } | |
3664 | ||
3665 | ||
3666 | /* Set the status of the given common block as being BIND(C) or not, | |
3667 | depending on the given parameter, is_bind_c. */ | |
3668 | ||
3669 | void | |
3670 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3671 | { | |
3672 | com_block->is_bind_c = is_bind_c; | |
3673 | return; | |
3674 | } | |
3675 | ||
3676 | ||
3677 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3678 | ||
17b1d2a0 | 3679 | gfc_try |
2ec855f1 | 3680 | verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 3681 | { |
bc21d315 | 3682 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 TB |
3683 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
3684 | ? SUCCESS : FAILURE; | |
a8b3b0b6 CR |
3685 | else if (ts->is_c_interop != 1) |
3686 | return FAILURE; | |
3687 | ||
3688 | return SUCCESS; | |
3689 | } | |
3690 | ||
3691 | ||
3692 | /* Verify that the variables of a given common block, which has been | |
3693 | defined with the attribute specifier bind(c), to be of a C | |
3694 | interoperable type. Errors will be reported here, if | |
3695 | encountered. */ | |
3696 | ||
17b1d2a0 | 3697 | gfc_try |
a8b3b0b6 CR |
3698 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3699 | { | |
3700 | gfc_symbol *curr_sym = NULL; | |
17b1d2a0 | 3701 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3702 | |
3703 | curr_sym = com_block->head; | |
3704 | ||
3705 | /* Make sure we have at least one symbol. */ | |
3706 | if (curr_sym == NULL) | |
3707 | return retval; | |
3708 | ||
3709 | /* Here we know we have a symbol, so we'll execute this loop | |
3710 | at least once. */ | |
3711 | do | |
3712 | { | |
3713 | /* The second to last param, 1, says this is in a common block. */ | |
3714 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3715 | curr_sym = curr_sym->common_next; | |
3716 | } while (curr_sym != NULL); | |
3717 | ||
3718 | return retval; | |
3719 | } | |
3720 | ||
3721 | ||
3722 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3723 | an appropriate error message is reported. */ | |
3724 | ||
17b1d2a0 | 3725 | gfc_try |
a8b3b0b6 CR |
3726 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3727 | int is_in_common, gfc_common_head *com_block) | |
3728 | { | |
8327f9c2 | 3729 | bool bind_c_function = false; |
17b1d2a0 | 3730 | gfc_try retval = SUCCESS; |
d8fa96e0 | 3731 | |
8327f9c2 TB |
3732 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3733 | bind_c_function = true; | |
3734 | ||
d8fa96e0 CR |
3735 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3736 | { | |
3737 | tmp_sym = tmp_sym->result; | |
3738 | /* Make sure it wasn't an implicitly typed result. */ | |
3739 | if (tmp_sym->attr.implicit_type) | |
3740 | { | |
3741 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3742 | "%L may not be C interoperable", tmp_sym->name, | |
3743 | &tmp_sym->declared_at); | |
3744 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3745 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3746 | tmp_sym->ts.is_c_interop = 1; | |
3747 | tmp_sym->attr.is_c_interop = 1; | |
3748 | } | |
3749 | } | |
8327f9c2 | 3750 | |
a8b3b0b6 CR |
3751 | /* Here, we know we have the bind(c) attribute, so if we have |
3752 | enough type info, then verify that it's a C interop kind. | |
3753 | The info could be in the symbol already, or possibly still in | |
3754 | the given ts (current_ts), so look in both. */ | |
3755 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
3756 | { | |
2ec855f1 | 3757 | if (verify_c_interop (&(tmp_sym->ts)) != SUCCESS) |
a8b3b0b6 CR |
3758 | { |
3759 | /* See if we're dealing with a sym in a common block or not. */ | |
3760 | if (is_in_common == 1) | |
3761 | { | |
3762 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3763 | "may not be a C interoperable " | |
3764 | "kind though common block '%s' is BIND(C)", | |
3765 | tmp_sym->name, com_block->name, | |
3766 | &(tmp_sym->declared_at), com_block->name); | |
3767 | } | |
3768 | else | |
3769 | { | |
3770 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3771 | gfc_error ("Type declaration '%s' at %L is not C " | |
3772 | "interoperable but it is BIND(C)", | |
3773 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3774 | else | |
3775 | gfc_warning ("Variable '%s' at %L " | |
3776 | "may not be a C interoperable " | |
3777 | "kind but it is bind(c)", | |
3778 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3779 | } | |
3780 | } | |
3781 | ||
3782 | /* Variables declared w/in a common block can't be bind(c) | |
3783 | since there's no way for C to see these variables, so there's | |
3784 | semantically no reason for the attribute. */ | |
3785 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
3786 | { | |
3787 | gfc_error ("Variable '%s' in common block '%s' at " | |
3788 | "%L cannot be declared with BIND(C) " | |
3789 | "since it is not a global", | |
3790 | tmp_sym->name, com_block->name, | |
3791 | &(tmp_sym->declared_at)); | |
3792 | retval = FAILURE; | |
3793 | } | |
3794 | ||
3795 | /* Scalar variables that are bind(c) can not have the pointer | |
3796 | or allocatable attributes. */ | |
3797 | if (tmp_sym->attr.is_bind_c == 1) | |
3798 | { | |
3799 | if (tmp_sym->attr.pointer == 1) | |
3800 | { | |
3801 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3802 | "POINTER and BIND(C) attributes", | |
3803 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3804 | retval = FAILURE; | |
3805 | } | |
3806 | ||
3807 | if (tmp_sym->attr.allocatable == 1) | |
3808 | { | |
3809 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3810 | "ALLOCATABLE and BIND(C) attributes", | |
3811 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3812 | retval = FAILURE; | |
3813 | } | |
3814 | ||
8327f9c2 TB |
3815 | } |
3816 | ||
3817 | /* If it is a BIND(C) function, make sure the return value is a | |
3818 | scalar value. The previous tests in this function made sure | |
3819 | the type is interoperable. */ | |
3820 | if (bind_c_function && tmp_sym->as != NULL) | |
3821 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
3822 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
3823 | ||
3824 | /* BIND(C) functions can not return a character string. */ | |
3825 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
3826 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
3827 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
3828 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
8327f9c2 | 3829 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
a8b3b0b6 CR |
3830 | "be a character string", tmp_sym->name, |
3831 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
3832 | } |
3833 | ||
3834 | /* See if the symbol has been marked as private. If it has, make sure | |
3835 | there is no binding label and warn the user if there is one. */ | |
3836 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
3837 | && tmp_sym->binding_label[0] != '\0') | |
3838 | /* Use gfc_warning_now because we won't say that the symbol fails | |
3839 | just because of this. */ | |
3840 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
3841 | "given the binding label '%s'", tmp_sym->name, | |
3842 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
3843 | ||
3844 | return retval; | |
3845 | } | |
3846 | ||
3847 | ||
3848 | /* Set the appropriate fields for a symbol that's been declared as | |
3849 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
3850 | the type is C interoperable. Errors are reported by the functions | |
3851 | used to set/test these fields. */ | |
3852 | ||
17b1d2a0 | 3853 | gfc_try |
a8b3b0b6 CR |
3854 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
3855 | { | |
17b1d2a0 | 3856 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3857 | |
3858 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
3859 | ||
3860 | /* Set the is_bind_c bit in symbol_attribute. */ | |
3861 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
3862 | ||
3863 | if (set_binding_label (tmp_sym->binding_label, tmp_sym->name, | |
3864 | num_idents) != SUCCESS) | |
3865 | return FAILURE; | |
3866 | ||
3867 | return retval; | |
3868 | } | |
3869 | ||
3870 | ||
3871 | /* Set the fields marking the given common block as BIND(C), including | |
3872 | a binding label, and report any errors encountered. */ | |
3873 | ||
17b1d2a0 | 3874 | gfc_try |
a8b3b0b6 CR |
3875 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
3876 | { | |
17b1d2a0 | 3877 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3878 | |
3879 | /* destLabel, common name, typespec (which may have binding label). */ | |
3880 | if (set_binding_label (com_block->binding_label, com_block->name, num_idents) | |
3881 | != SUCCESS) | |
3882 | return FAILURE; | |
3883 | ||
3884 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
3885 | set_com_block_bind_c (com_block, 1); | |
3886 | ||
3887 | return retval; | |
3888 | } | |
3889 | ||
3890 | ||
3891 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
3892 | attribute applies to. */ | |
3893 | ||
17b1d2a0 | 3894 | gfc_try |
a8b3b0b6 CR |
3895 | get_bind_c_idents (void) |
3896 | { | |
3897 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3898 | int num_idents = 0; | |
3899 | gfc_symbol *tmp_sym = NULL; | |
3900 | match found_id; | |
3901 | gfc_common_head *com_block = NULL; | |
3902 | ||
3903 | if (gfc_match_name (name) == MATCH_YES) | |
3904 | { | |
3905 | found_id = MATCH_YES; | |
3906 | gfc_get_ha_symbol (name, &tmp_sym); | |
3907 | } | |
3908 | else if (match_common_name (name) == MATCH_YES) | |
3909 | { | |
3910 | found_id = MATCH_YES; | |
3911 | com_block = gfc_get_common (name, 0); | |
3912 | } | |
3913 | else | |
3914 | { | |
3915 | gfc_error ("Need either entity or common block name for " | |
3916 | "attribute specification statement at %C"); | |
3917 | return FAILURE; | |
3918 | } | |
3919 | ||
3920 | /* Save the current identifier and look for more. */ | |
3921 | do | |
3922 | { | |
3923 | /* Increment the number of identifiers found for this spec stmt. */ | |
3924 | num_idents++; | |
3925 | ||
3926 | /* Make sure we have a sym or com block, and verify that it can | |
3927 | be bind(c). Set the appropriate field(s) and look for more | |
3928 | identifiers. */ | |
3929 | if (tmp_sym != NULL || com_block != NULL) | |
3930 | { | |
3931 | if (tmp_sym != NULL) | |
3932 | { | |
3933 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
3934 | != SUCCESS) | |
3935 | return FAILURE; | |
3936 | } | |
3937 | else | |
3938 | { | |
3939 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
3940 | != SUCCESS) | |
3941 | return FAILURE; | |
3942 | } | |
3943 | ||
3944 | /* Look to see if we have another identifier. */ | |
3945 | tmp_sym = NULL; | |
3946 | if (gfc_match_eos () == MATCH_YES) | |
3947 | found_id = MATCH_NO; | |
3948 | else if (gfc_match_char (',') != MATCH_YES) | |
3949 | found_id = MATCH_NO; | |
3950 | else if (gfc_match_name (name) == MATCH_YES) | |
3951 | { | |
3952 | found_id = MATCH_YES; | |
3953 | gfc_get_ha_symbol (name, &tmp_sym); | |
3954 | } | |
3955 | else if (match_common_name (name) == MATCH_YES) | |
3956 | { | |
3957 | found_id = MATCH_YES; | |
3958 | com_block = gfc_get_common (name, 0); | |
3959 | } | |
3960 | else | |
3961 | { | |
3962 | gfc_error ("Missing entity or common block name for " | |
3963 | "attribute specification statement at %C"); | |
3964 | return FAILURE; | |
3965 | } | |
3966 | } | |
3967 | else | |
3968 | { | |
3969 | gfc_internal_error ("Missing symbol"); | |
3970 | } | |
3971 | } while (found_id == MATCH_YES); | |
3972 | ||
3973 | /* if we get here we were successful */ | |
3974 | return SUCCESS; | |
3975 | } | |
3976 | ||
3977 | ||
3978 | /* Try and match a BIND(C) attribute specification statement. */ | |
3979 | ||
3980 | match | |
3981 | gfc_match_bind_c_stmt (void) | |
3982 | { | |
3983 | match found_match = MATCH_NO; | |
3984 | gfc_typespec *ts; | |
3985 | ||
3986 | ts = ¤t_ts; | |
3987 | ||
3988 | /* This may not be necessary. */ | |
3989 | gfc_clear_ts (ts); | |
3990 | /* Clear the temporary binding label holder. */ | |
3991 | curr_binding_label[0] = '\0'; | |
3992 | ||
3993 | /* Look for the bind(c). */ | |
1eabf70a | 3994 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
3995 | |
3996 | if (found_match == MATCH_YES) | |
3997 | { | |
3998 | /* Look for the :: now, but it is not required. */ | |
3999 | gfc_match (" :: "); | |
4000 | ||
4001 | /* Get the identifier(s) that needs to be updated. This may need to | |
4002 | change to hand the flag(s) for the attr specified so all identifiers | |
4003 | found can have all appropriate parts updated (assuming that the same | |
4004 | spec stmt can have multiple attrs, such as both bind(c) and | |
4005 | allocatable...). */ | |
4006 | if (get_bind_c_idents () != SUCCESS) | |
4007 | /* Error message should have printed already. */ | |
4008 | return MATCH_ERROR; | |
4009 | } | |
4010 | ||
4011 | return found_match; | |
4012 | } | |
4013 | ||
4014 | ||
6de9cd9a DN |
4015 | /* Match a data declaration statement. */ |
4016 | ||
4017 | match | |
4018 | gfc_match_data_decl (void) | |
4019 | { | |
4020 | gfc_symbol *sym; | |
4021 | match m; | |
949d5b72 | 4022 | int elem; |
6de9cd9a | 4023 | |
a8b3b0b6 CR |
4024 | num_idents_on_line = 0; |
4025 | ||
e74f1cc8 | 4026 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4027 | if (m != MATCH_YES) |
4028 | return m; | |
4029 | ||
2e23972e JW |
4030 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4031 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4032 | { |
bc21d315 | 4033 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4034 | |
4035 | if (sym == NULL) | |
4036 | { | |
4037 | m = MATCH_ERROR; | |
4038 | goto cleanup; | |
4039 | } | |
4040 | ||
bc21d315 | 4041 | current_ts.u.derived = sym; |
6de9cd9a DN |
4042 | } |
4043 | ||
4044 | m = match_attr_spec (); | |
4045 | if (m == MATCH_ERROR) | |
4046 | { | |
4047 | m = MATCH_NO; | |
4048 | goto cleanup; | |
4049 | } | |
4050 | ||
2e23972e JW |
4051 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4052 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4053 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4054 | { |
4055 | ||
4056 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4057 | goto ok; | |
4058 | ||
bc21d315 JW |
4059 | gfc_find_symbol (current_ts.u.derived->name, |
4060 | current_ts.u.derived->ns->parent, 1, &sym); | |
6de9cd9a | 4061 | |
976e21f6 | 4062 | /* Any symbol that we find had better be a type definition |
636dff67 | 4063 | which has its components defined. */ |
976e21f6 | 4064 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4065 | && (current_ts.u.derived->components != NULL |
4066 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4067 | goto ok; |
4068 | ||
976e21f6 PT |
4069 | /* Now we have an error, which we signal, and then fix up |
4070 | because the knock-on is plain and simple confusing. */ | |
4071 | gfc_error_now ("Derived type at %C has not been previously defined " | |
636dff67 | 4072 | "and so cannot appear in a derived type definition"); |
976e21f6 PT |
4073 | current_attr.pointer = 1; |
4074 | goto ok; | |
6de9cd9a DN |
4075 | } |
4076 | ||
4077 | ok: | |
4078 | /* If we have an old-style character declaration, and no new-style | |
4079 | attribute specifications, then there a comma is optional between | |
4080 | the type specification and the variable list. */ | |
4081 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4082 | gfc_match_char (','); | |
4083 | ||
949d5b72 PT |
4084 | /* Give the types/attributes to symbols that follow. Give the element |
4085 | a number so that repeat character length expressions can be copied. */ | |
4086 | elem = 1; | |
6de9cd9a DN |
4087 | for (;;) |
4088 | { | |
a8b3b0b6 | 4089 | num_idents_on_line++; |
949d5b72 | 4090 | m = variable_decl (elem++); |
6de9cd9a DN |
4091 | if (m == MATCH_ERROR) |
4092 | goto cleanup; | |
4093 | if (m == MATCH_NO) | |
4094 | break; | |
4095 | ||
4096 | if (gfc_match_eos () == MATCH_YES) | |
4097 | goto cleanup; | |
4098 | if (gfc_match_char (',') != MATCH_YES) | |
4099 | break; | |
4100 | } | |
4101 | ||
8f81c3c6 PT |
4102 | if (gfc_error_flag_test () == 0) |
4103 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
4104 | m = MATCH_ERROR; |
4105 | ||
a9f6f1f2 JD |
4106 | gfc_free_data_all (gfc_current_ns); |
4107 | ||
6de9cd9a DN |
4108 | cleanup: |
4109 | gfc_free_array_spec (current_as); | |
4110 | current_as = NULL; | |
4111 | return m; | |
4112 | } | |
4113 | ||
4114 | ||
4115 | /* Match a prefix associated with a function or subroutine | |
4116 | declaration. If the typespec pointer is nonnull, then a typespec | |
4117 | can be matched. Note that if nothing matches, MATCH_YES is | |
4118 | returned (the null string was matched). */ | |
4119 | ||
1c8bcdf7 PT |
4120 | match |
4121 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4122 | { |
7389bce6 | 4123 | bool seen_type; |
e6c14898 DK |
4124 | bool seen_impure; |
4125 | bool found_prefix; | |
6de9cd9a DN |
4126 | |
4127 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4128 | seen_type = false; |
4129 | seen_impure = false; | |
6de9cd9a | 4130 | |
3df684e2 DK |
4131 | gcc_assert (!gfc_matching_prefix); |
4132 | gfc_matching_prefix = true; | |
f37e928c | 4133 | |
e6c14898 | 4134 | do |
6de9cd9a | 4135 | { |
e6c14898 | 4136 | found_prefix = false; |
6de9cd9a | 4137 | |
e6c14898 DK |
4138 | if (!seen_type && ts != NULL |
4139 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4140 | && gfc_match_space () == MATCH_YES) | |
4141 | { | |
6de9cd9a | 4142 | |
e6c14898 DK |
4143 | seen_type = true; |
4144 | found_prefix = true; | |
4145 | } | |
4146 | ||
4147 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4148 | { | |
4149 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
4150 | goto error; | |
4151 | ||
4152 | found_prefix = true; | |
4153 | } | |
4154 | ||
4155 | if (gfc_match ("pure% ") == MATCH_YES) | |
4156 | { | |
4157 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
4158 | goto error; | |
4159 | ||
4160 | found_prefix = true; | |
4161 | } | |
6de9cd9a | 4162 | |
e6c14898 DK |
4163 | if (gfc_match ("recursive% ") == MATCH_YES) |
4164 | { | |
4165 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
4166 | goto error; | |
4167 | ||
4168 | found_prefix = true; | |
4169 | } | |
4170 | ||
4171 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4172 | attribute but rather only prevents ELEMENTAL routines from being | |
4173 | automatically PURE. */ | |
4174 | if (gfc_match ("impure% ") == MATCH_YES) | |
4175 | { | |
4176 | if (gfc_notify_std (GFC_STD_F2008, | |
4177 | "Fortran 2008: IMPURE procedure at %C") | |
4178 | == FAILURE) | |
4179 | goto error; | |
4180 | ||
4181 | seen_impure = true; | |
4182 | found_prefix = true; | |
4183 | } | |
6de9cd9a | 4184 | } |
e6c14898 | 4185 | while (found_prefix); |
6de9cd9a | 4186 | |
e6c14898 DK |
4187 | /* IMPURE and PURE must not both appear, of course. */ |
4188 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4189 | { |
e6c14898 DK |
4190 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4191 | goto error; | |
6de9cd9a DN |
4192 | } |
4193 | ||
e6c14898 DK |
4194 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4195 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4196 | { |
e6c14898 | 4197 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) |
f37e928c | 4198 | goto error; |
6de9cd9a DN |
4199 | } |
4200 | ||
4201 | /* At this point, the next item is not a prefix. */ | |
3df684e2 DK |
4202 | gcc_assert (gfc_matching_prefix); |
4203 | gfc_matching_prefix = false; | |
6de9cd9a | 4204 | return MATCH_YES; |
f37e928c DK |
4205 | |
4206 | error: | |
3df684e2 DK |
4207 | gcc_assert (gfc_matching_prefix); |
4208 | gfc_matching_prefix = false; | |
f37e928c | 4209 | return MATCH_ERROR; |
6de9cd9a DN |
4210 | } |
4211 | ||
4212 | ||
1c8bcdf7 | 4213 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4214 | |
17b1d2a0 | 4215 | static gfc_try |
636dff67 | 4216 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4217 | { |
6de9cd9a DN |
4218 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
4219 | return FAILURE; | |
4220 | ||
4221 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
4222 | return FAILURE; | |
4223 | ||
4224 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
4225 | return FAILURE; | |
4226 | ||
4227 | return SUCCESS; | |
4228 | } | |
4229 | ||
4230 | ||
4231 | /* Match a formal argument list. */ | |
4232 | ||
4233 | match | |
636dff67 | 4234 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4235 | { |
4236 | gfc_formal_arglist *head, *tail, *p, *q; | |
4237 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4238 | gfc_symbol *sym; | |
4239 | match m; | |
4240 | ||
4241 | head = tail = NULL; | |
4242 | ||
4243 | if (gfc_match_char ('(') != MATCH_YES) | |
4244 | { | |
4245 | if (null_flag) | |
4246 | goto ok; | |
4247 | return MATCH_NO; | |
4248 | } | |
4249 | ||
4250 | if (gfc_match_char (')') == MATCH_YES) | |
4251 | goto ok; | |
4252 | ||
4253 | for (;;) | |
4254 | { | |
4255 | if (gfc_match_char ('*') == MATCH_YES) | |
4256 | sym = NULL; | |
4257 | else | |
4258 | { | |
4259 | m = gfc_match_name (name); | |
4260 | if (m != MATCH_YES) | |
4261 | goto cleanup; | |
4262 | ||
4263 | if (gfc_get_symbol (name, NULL, &sym)) | |
4264 | goto cleanup; | |
4265 | } | |
4266 | ||
4267 | p = gfc_get_formal_arglist (); | |
4268 | ||
4269 | if (head == NULL) | |
4270 | head = tail = p; | |
4271 | else | |
4272 | { | |
4273 | tail->next = p; | |
4274 | tail = p; | |
4275 | } | |
4276 | ||
4277 | tail->sym = sym; | |
4278 | ||
4279 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4280 | dummy procedure. We don't apply these attributes to formal |
4281 | arguments of statement functions. */ | |
6de9cd9a | 4282 | if (sym != NULL && !st_flag |
231b2fcc | 4283 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
6de9cd9a DN |
4284 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
4285 | { | |
4286 | m = MATCH_ERROR; | |
4287 | goto cleanup; | |
4288 | } | |
4289 | ||
4290 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4291 | so check for it explicitly. After the statement is accepted, |
4292 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4293 | if (gfc_new_block != NULL && sym != NULL |
4294 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4295 | { | |
4296 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4297 | sym->name); | |
4298 | m = MATCH_ERROR; | |
4299 | goto cleanup; | |
4300 | } | |
4301 | ||
4302 | if (gfc_match_char (')') == MATCH_YES) | |
4303 | goto ok; | |
4304 | ||
4305 | m = gfc_match_char (','); | |
4306 | if (m != MATCH_YES) | |
4307 | { | |
4308 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4309 | goto cleanup; | |
4310 | } | |
4311 | } | |
4312 | ||
4313 | ok: | |
4314 | /* Check for duplicate symbols in the formal argument list. */ | |
4315 | if (head != NULL) | |
4316 | { | |
4317 | for (p = head; p->next; p = p->next) | |
4318 | { | |
4319 | if (p->sym == NULL) | |
4320 | continue; | |
4321 | ||
4322 | for (q = p->next; q; q = q->next) | |
4323 | if (p->sym == q->sym) | |
4324 | { | |
636dff67 SK |
4325 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4326 | "at %C", p->sym->name); | |
6de9cd9a DN |
4327 | |
4328 | m = MATCH_ERROR; | |
4329 | goto cleanup; | |
4330 | } | |
4331 | } | |
4332 | } | |
4333 | ||
66e4ab31 SK |
4334 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
4335 | == FAILURE) | |
6de9cd9a DN |
4336 | { |
4337 | m = MATCH_ERROR; | |
4338 | goto cleanup; | |
4339 | } | |
4340 | ||
4341 | return MATCH_YES; | |
4342 | ||
4343 | cleanup: | |
4344 | gfc_free_formal_arglist (head); | |
4345 | return m; | |
4346 | } | |
4347 | ||
4348 | ||
4349 | /* Match a RESULT specification following a function declaration or | |
4350 | ENTRY statement. Also matches the end-of-statement. */ | |
4351 | ||
4352 | static match | |
66e4ab31 | 4353 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4354 | { |
4355 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4356 | gfc_symbol *r; | |
4357 | match m; | |
4358 | ||
4359 | if (gfc_match (" result (") != MATCH_YES) | |
4360 | return MATCH_NO; | |
4361 | ||
4362 | m = gfc_match_name (name); | |
4363 | if (m != MATCH_YES) | |
4364 | return m; | |
4365 | ||
a8b3b0b6 CR |
4366 | /* Get the right paren, and that's it because there could be the |
4367 | bind(c) attribute after the result clause. */ | |
4368 | if (gfc_match_char(')') != MATCH_YES) | |
6de9cd9a | 4369 | { |
a8b3b0b6 | 4370 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4371 | return MATCH_ERROR; |
4372 | } | |
4373 | ||
4374 | if (strcmp (function->name, name) == 0) | |
4375 | { | |
636dff67 | 4376 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4377 | return MATCH_ERROR; |
4378 | } | |
4379 | ||
4380 | if (gfc_get_symbol (name, NULL, &r)) | |
4381 | return MATCH_ERROR; | |
4382 | ||
726d8566 | 4383 | if (gfc_add_result (&r->attr, r->name, NULL) == FAILURE) |
6de9cd9a DN |
4384 | return MATCH_ERROR; |
4385 | ||
4386 | *result = r; | |
4387 | ||
4388 | return MATCH_YES; | |
4389 | } | |
4390 | ||
4391 | ||
a8b3b0b6 CR |
4392 | /* Match a function suffix, which could be a combination of a result |
4393 | clause and BIND(C), either one, or neither. The draft does not | |
4394 | require them to come in a specific order. */ | |
4395 | ||
4396 | match | |
4397 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4398 | { | |
4399 | match is_bind_c; /* Found bind(c). */ | |
4400 | match is_result; /* Found result clause. */ | |
4401 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4402 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4403 | bool allow_binding_name; |
a8b3b0b6 CR |
4404 | |
4405 | /* Initialize to having found nothing. */ | |
4406 | found_match = MATCH_NO; | |
4407 | is_bind_c = MATCH_NO; | |
4408 | is_result = MATCH_NO; | |
4409 | ||
4410 | /* Get the next char to narrow between result and bind(c). */ | |
4411 | gfc_gobble_whitespace (); | |
8fc541d3 | 4412 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4413 | |
1eabf70a TB |
4414 | /* C binding names are not allowed for internal procedures. */ |
4415 | if (gfc_current_state () == COMP_CONTAINS | |
4416 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4417 | allow_binding_name = false; | |
4418 | else | |
4419 | allow_binding_name = true; | |
4420 | ||
a8b3b0b6 CR |
4421 | switch (peek_char) |
4422 | { | |
4423 | case 'r': | |
4424 | /* Look for result clause. */ | |
4425 | is_result = match_result (sym, result); | |
4426 | if (is_result == MATCH_YES) | |
4427 | { | |
4428 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4429 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4430 | /* We've found the result clause and possibly bind(c). */ |
4431 | found_match = MATCH_YES; | |
4432 | } | |
4433 | else | |
4434 | /* This should only be MATCH_ERROR. */ | |
4435 | found_match = is_result; | |
4436 | break; | |
4437 | case 'b': | |
4438 | /* Look for bind(c) first. */ | |
1eabf70a | 4439 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4440 | if (is_bind_c == MATCH_YES) |
4441 | { | |
4442 | /* Now see if a result clause followed it. */ | |
4443 | is_result = match_result (sym, result); | |
4444 | found_match = MATCH_YES; | |
4445 | } | |
4446 | else | |
4447 | { | |
4448 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4449 | found_match = MATCH_ERROR; | |
4450 | } | |
4451 | break; | |
4452 | default: | |
4453 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4454 | found_match = MATCH_ERROR; | |
4455 | break; | |
4456 | } | |
4457 | ||
a8b3b0b6 | 4458 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4459 | { |
1eabf70a | 4460 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4461 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4462 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
fdc54e88 FXC |
4463 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
4464 | "at %L may not be specified for an internal " | |
4465 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
4466 | == FAILURE) |
4467 | return MATCH_ERROR; | |
4468 | ||
01f4fff1 TB |
4469 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) |
4470 | == FAILURE) | |
4471 | return MATCH_ERROR; | |
4472 | } | |
a8b3b0b6 CR |
4473 | |
4474 | return found_match; | |
4475 | } | |
4476 | ||
4477 | ||
3070bab4 JW |
4478 | /* Procedure pointer return value without RESULT statement: |
4479 | Add "hidden" result variable named "ppr@". */ | |
4480 | ||
4481 | static gfc_try | |
4482 | add_hidden_procptr_result (gfc_symbol *sym) | |
4483 | { | |
4484 | bool case1,case2; | |
4485 | ||
4486 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
4487 | return FAILURE; | |
4488 | ||
4489 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4490 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4491 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4492 | && sym->attr.external; | |
4493 | /* Second usage case: INTERFACE statements. */ | |
4494 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4495 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4496 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4497 | ||
4498 | if (case1 || case2) | |
4499 | { | |
4500 | gfc_symtree *stree; | |
4501 | if (case1) | |
08a6b8e0 | 4502 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4503 | else if (case2) |
c73b6478 JW |
4504 | { |
4505 | gfc_symtree *st2; | |
08a6b8e0 | 4506 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4507 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4508 | st2->n.sym = stree->n.sym; | |
4509 | } | |
3070bab4 JW |
4510 | sym->result = stree->n.sym; |
4511 | ||
4512 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4513 | sym->result->attr.pointer = sym->attr.pointer; | |
4514 | sym->result->attr.external = sym->attr.external; | |
4515 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4516 | sym->result->ts = sym->ts; |
3070bab4 JW |
4517 | sym->attr.proc_pointer = 0; |
4518 | sym->attr.pointer = 0; | |
4519 | sym->attr.external = 0; | |
4520 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4521 | { | |
4522 | sym->result->attr.pointer = 0; | |
4523 | sym->result->attr.proc_pointer = 1; | |
4524 | } | |
4525 | ||
4526 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4527 | } | |
4528 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4529 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4530 | && sym->result && sym->result != sym && sym->result->attr.external | |
4531 | && sym == gfc_current_ns->proc_name | |
4532 | && sym == sym->result->ns->proc_name | |
4533 | && strcmp ("ppr@", sym->result->name) == 0) | |
4534 | { | |
4535 | sym->result->attr.proc_pointer = 1; | |
4536 | sym->attr.pointer = 0; | |
4537 | return SUCCESS; | |
4538 | } | |
4539 | else | |
4540 | return FAILURE; | |
4541 | } | |
4542 | ||
4543 | ||
713485cc JW |
4544 | /* Match the interface for a PROCEDURE declaration, |
4545 | including brackets (R1212). */ | |
69773742 JW |
4546 | |
4547 | static match | |
713485cc | 4548 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
4549 | { |
4550 | match m; | |
3276e0b3 | 4551 | gfc_symtree *st; |
69773742 | 4552 | locus old_loc, entry_loc; |
3276e0b3 PT |
4553 | gfc_namespace *old_ns = gfc_current_ns; |
4554 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 4555 | |
3276e0b3 | 4556 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
4557 | gfc_clear_ts (¤t_ts); |
4558 | ||
4559 | if (gfc_match (" (") != MATCH_YES) | |
4560 | { | |
4561 | gfc_current_locus = entry_loc; | |
4562 | return MATCH_NO; | |
4563 | } | |
4564 | ||
4565 | /* Get the type spec. for the procedure interface. */ | |
4566 | old_loc = gfc_current_locus; | |
e74f1cc8 | 4567 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 4568 | gfc_gobble_whitespace (); |
8fc541d3 | 4569 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
4570 | goto got_ts; |
4571 | ||
4572 | if (m == MATCH_ERROR) | |
4573 | return m; | |
4574 | ||
3276e0b3 | 4575 | /* Procedure interface is itself a procedure. */ |
69773742 | 4576 | gfc_current_locus = old_loc; |
3276e0b3 | 4577 | m = gfc_match_name (name); |
69773742 | 4578 | |
3276e0b3 PT |
4579 | /* First look to see if it is already accessible in the current |
4580 | namespace because it is use associated or contained. */ | |
4581 | st = NULL; | |
4582 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4583 | return MATCH_ERROR; | |
4584 | ||
4585 | /* If it is still not found, then try the parent namespace, if it | |
4586 | exists and create the symbol there if it is still not found. */ | |
4587 | if (gfc_current_ns->parent) | |
4588 | gfc_current_ns = gfc_current_ns->parent; | |
4589 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4590 | return MATCH_ERROR; | |
4591 | ||
4592 | gfc_current_ns = old_ns; | |
4593 | *proc_if = st->n.sym; | |
69773742 JW |
4594 | |
4595 | /* Various interface checks. */ | |
713485cc | 4596 | if (*proc_if) |
69773742 | 4597 | { |
713485cc | 4598 | (*proc_if)->refs++; |
bb343a6c TB |
4599 | /* Resolve interface if possible. That way, attr.procedure is only set |
4600 | if it is declared by a later procedure-declaration-stmt, which is | |
4601 | invalid per C1212. */ | |
713485cc JW |
4602 | while ((*proc_if)->ts.interface) |
4603 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 4604 | |
713485cc | 4605 | if ((*proc_if)->generic) |
69773742 | 4606 | { |
713485cc JW |
4607 | gfc_error ("Interface '%s' at %C may not be generic", |
4608 | (*proc_if)->name); | |
69773742 JW |
4609 | return MATCH_ERROR; |
4610 | } | |
713485cc | 4611 | if ((*proc_if)->attr.proc == PROC_ST_FUNCTION) |
69773742 JW |
4612 | { |
4613 | gfc_error ("Interface '%s' at %C may not be a statement function", | |
713485cc | 4614 | (*proc_if)->name); |
69773742 JW |
4615 | return MATCH_ERROR; |
4616 | } | |
4617 | /* Handle intrinsic procedures. */ | |
713485cc JW |
4618 | if (!((*proc_if)->attr.external || (*proc_if)->attr.use_assoc |
4619 | || (*proc_if)->attr.if_source == IFSRC_IFBODY) | |
4620 | && (gfc_is_intrinsic ((*proc_if), 0, gfc_current_locus) | |
4621 | || gfc_is_intrinsic ((*proc_if), 1, gfc_current_locus))) | |
4622 | (*proc_if)->attr.intrinsic = 1; | |
4623 | if ((*proc_if)->attr.intrinsic | |
4624 | && !gfc_intrinsic_actual_ok ((*proc_if)->name, 0)) | |
69773742 JW |
4625 | { |
4626 | gfc_error ("Intrinsic procedure '%s' not allowed " | |
713485cc | 4627 | "in PROCEDURE statement at %C", (*proc_if)->name); |
69773742 JW |
4628 | return MATCH_ERROR; |
4629 | } | |
69773742 JW |
4630 | } |
4631 | ||
4632 | got_ts: | |
69773742 JW |
4633 | if (gfc_match (" )") != MATCH_YES) |
4634 | { | |
4635 | gfc_current_locus = entry_loc; | |
4636 | return MATCH_NO; | |
4637 | } | |
4638 | ||
713485cc JW |
4639 | return MATCH_YES; |
4640 | } | |
4641 | ||
4642 | ||
4643 | /* Match a PROCEDURE declaration (R1211). */ | |
4644 | ||
4645 | static match | |
4646 | match_procedure_decl (void) | |
4647 | { | |
4648 | match m; | |
4649 | gfc_symbol *sym, *proc_if = NULL; | |
4650 | int num; | |
4651 | gfc_expr *initializer = NULL; | |
4652 | ||
4653 | /* Parse interface (with brackets). */ | |
4654 | m = match_procedure_interface (&proc_if); | |
4655 | if (m != MATCH_YES) | |
4656 | return m; | |
4657 | ||
4658 | /* Parse attributes (with colons). */ | |
69773742 JW |
4659 | m = match_attr_spec(); |
4660 | if (m == MATCH_ERROR) | |
4661 | return MATCH_ERROR; | |
4662 | ||
4663 | /* Get procedure symbols. */ | |
4664 | for(num=1;;num++) | |
4665 | { | |
69773742 JW |
4666 | m = gfc_match_symbol (&sym, 0); |
4667 | if (m == MATCH_NO) | |
4668 | goto syntax; | |
4669 | else if (m == MATCH_ERROR) | |
4670 | return m; | |
4671 | ||
4672 | /* Add current_attr to the symbol attributes. */ | |
4673 | if (gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4674 | return MATCH_ERROR; | |
4675 | ||
4676 | if (sym->attr.is_bind_c) | |
4677 | { | |
4678 | /* Check for C1218. */ | |
4679 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4680 | { | |
4681 | gfc_error ("BIND(C) attribute at %C requires " | |
4682 | "an interface with BIND(C)"); | |
4683 | return MATCH_ERROR; | |
4684 | } | |
4685 | /* Check for C1217. */ | |
4686 | if (has_name_equals && sym->attr.pointer) | |
4687 | { | |
4688 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4689 | "POINTER attribute at %C"); | |
4690 | return MATCH_ERROR; | |
4691 | } | |
4692 | if (has_name_equals && sym->attr.dummy) | |
4693 | { | |
4694 | gfc_error ("Dummy procedure at %C may not have " | |
4695 | "BIND(C) attribute with NAME"); | |
4696 | return MATCH_ERROR; | |
4697 | } | |
4698 | /* Set binding label for BIND(C). */ | |
4699 | if (set_binding_label (sym->binding_label, sym->name, num) != SUCCESS) | |
4700 | return MATCH_ERROR; | |
4701 | } | |
4702 | ||
8fb74da4 | 4703 | if (gfc_add_external (&sym->attr, NULL) == FAILURE) |
69773742 | 4704 | return MATCH_ERROR; |
3070bab4 JW |
4705 | |
4706 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
4707 | sym = sym->result; | |
4708 | ||
69773742 JW |
4709 | if (gfc_add_proc (&sym->attr, sym->name, NULL) == FAILURE) |
4710 | return MATCH_ERROR; | |
4711 | ||
4712 | /* Set interface. */ | |
4713 | if (proc_if != NULL) | |
6cc309c9 | 4714 | { |
1d146030 JW |
4715 | if (sym->ts.type != BT_UNKNOWN) |
4716 | { | |
4717 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4718 | sym->name, &gfc_current_locus, | |
4719 | gfc_basic_typename (sym->ts.type)); | |
4720 | return MATCH_ERROR; | |
4721 | } | |
32d99e68 | 4722 | sym->ts.interface = proc_if; |
6cc309c9 | 4723 | sym->attr.untyped = 1; |
c73b6478 | 4724 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 4725 | } |
69773742 JW |
4726 | else if (current_ts.type != BT_UNKNOWN) |
4727 | { | |
1d146030 JW |
4728 | if (gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) |
4729 | return MATCH_ERROR; | |
32d99e68 JW |
4730 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4731 | sym->ts.interface->ts = current_ts; | |
4732 | sym->ts.interface->attr.function = 1; | |
4733 | sym->attr.function = sym->ts.interface->attr.function; | |
c73b6478 | 4734 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
4735 | } |
4736 | ||
8fb74da4 JW |
4737 | if (gfc_match (" =>") == MATCH_YES) |
4738 | { | |
4739 | if (!current_attr.pointer) | |
4740 | { | |
4741 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4742 | m = MATCH_ERROR; | |
4743 | goto cleanup; | |
4744 | } | |
4745 | ||
80f95228 | 4746 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
4747 | if (m != MATCH_YES) |
4748 | goto cleanup; | |
4749 | ||
4750 | if (add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus) | |
4751 | != SUCCESS) | |
4752 | goto cleanup; | |
4753 | ||
4754 | } | |
4755 | ||
4756 | gfc_set_sym_referenced (sym); | |
4757 | ||
69773742 JW |
4758 | if (gfc_match_eos () == MATCH_YES) |
4759 | return MATCH_YES; | |
4760 | if (gfc_match_char (',') != MATCH_YES) | |
4761 | goto syntax; | |
4762 | } | |
4763 | ||
4764 | syntax: | |
4765 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4766 | return MATCH_ERROR; | |
8fb74da4 JW |
4767 | |
4768 | cleanup: | |
4769 | /* Free stuff up and return. */ | |
4770 | gfc_free_expr (initializer); | |
4771 | return m; | |
69773742 JW |
4772 | } |
4773 | ||
4774 | ||
713485cc JW |
4775 | static match |
4776 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4777 | ||
4778 | ||
4779 | /* Match a procedure pointer component declaration (R445). */ | |
4780 | ||
4781 | static match | |
4782 | match_ppc_decl (void) | |
4783 | { | |
4784 | match m; | |
4785 | gfc_symbol *proc_if = NULL; | |
4786 | gfc_typespec ts; | |
4787 | int num; | |
4788 | gfc_component *c; | |
4789 | gfc_expr *initializer = NULL; | |
4790 | gfc_typebound_proc* tb; | |
4791 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4792 | ||
4793 | /* Parse interface (with brackets). */ | |
4794 | m = match_procedure_interface (&proc_if); | |
4795 | if (m != MATCH_YES) | |
4796 | goto syntax; | |
4797 | ||
4798 | /* Parse attributes. */ | |
4799 | tb = XCNEW (gfc_typebound_proc); | |
4800 | tb->where = gfc_current_locus; | |
4801 | m = match_binding_attributes (tb, false, true); | |
4802 | if (m == MATCH_ERROR) | |
4803 | return m; | |
4804 | ||
713485cc JW |
4805 | gfc_clear_attr (¤t_attr); |
4806 | current_attr.procedure = 1; | |
4807 | current_attr.proc_pointer = 1; | |
4808 | current_attr.access = tb->access; | |
4809 | current_attr.flavor = FL_PROCEDURE; | |
4810 | ||
4811 | /* Match the colons (required). */ | |
4812 | if (gfc_match (" ::") != MATCH_YES) | |
4813 | { | |
4814 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
4815 | return MATCH_ERROR; | |
4816 | } | |
4817 | ||
4818 | /* Check for C450. */ | |
4819 | if (!tb->nopass && proc_if == NULL) | |
4820 | { | |
4821 | gfc_error("NOPASS or explicit interface required at %C"); | |
4822 | return MATCH_ERROR; | |
4823 | } | |
4824 | ||
3212c187 SK |
4825 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Procedure pointer " |
4826 | "component at %C") == FAILURE) | |
4827 | return MATCH_ERROR; | |
4828 | ||
713485cc JW |
4829 | /* Match PPC names. */ |
4830 | ts = current_ts; | |
4831 | for(num=1;;num++) | |
4832 | { | |
4833 | m = gfc_match_name (name); | |
4834 | if (m == MATCH_NO) | |
4835 | goto syntax; | |
4836 | else if (m == MATCH_ERROR) | |
4837 | return m; | |
4838 | ||
4839 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
4840 | return MATCH_ERROR; | |
4841 | ||
4842 | /* Add current_attr to the symbol attributes. */ | |
4843 | if (gfc_copy_attr (&c->attr, ¤t_attr, NULL) == FAILURE) | |
4844 | return MATCH_ERROR; | |
4845 | ||
4846 | if (gfc_add_external (&c->attr, NULL) == FAILURE) | |
4847 | return MATCH_ERROR; | |
4848 | ||
4849 | if (gfc_add_proc (&c->attr, name, NULL) == FAILURE) | |
4850 | return MATCH_ERROR; | |
4851 | ||
90661f26 JW |
4852 | c->tb = tb; |
4853 | ||
713485cc JW |
4854 | /* Set interface. */ |
4855 | if (proc_if != NULL) | |
4856 | { | |
4857 | c->ts.interface = proc_if; | |
4858 | c->attr.untyped = 1; | |
4859 | c->attr.if_source = IFSRC_IFBODY; | |
4860 | } | |
4861 | else if (ts.type != BT_UNKNOWN) | |
4862 | { | |
4863 | c->ts = ts; | |
4864 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
4865 | c->ts.interface->ts = ts; | |
4866 | c->ts.interface->attr.function = 1; | |
4867 | c->attr.function = c->ts.interface->attr.function; | |
4868 | c->attr.if_source = IFSRC_UNKNOWN; | |
4869 | } | |
4870 | ||
4871 | if (gfc_match (" =>") == MATCH_YES) | |
4872 | { | |
80f95228 | 4873 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
4874 | if (m != MATCH_YES) |
4875 | { | |
4876 | gfc_free_expr (initializer); | |
4877 | return m; | |
4878 | } | |
4879 | c->initializer = initializer; | |
4880 | } | |
4881 | ||
4882 | if (gfc_match_eos () == MATCH_YES) | |
4883 | return MATCH_YES; | |
4884 | if (gfc_match_char (',') != MATCH_YES) | |
4885 | goto syntax; | |
4886 | } | |
4887 | ||
4888 | syntax: | |
4889 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
4890 | return MATCH_ERROR; | |
4891 | } | |
4892 | ||
4893 | ||
69773742 JW |
4894 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
4895 | ||
4896 | static match | |
4897 | match_procedure_in_interface (void) | |
4898 | { | |
4899 | match m; | |
4900 | gfc_symbol *sym; | |
4901 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4902 | ||
4903 | if (current_interface.type == INTERFACE_NAMELESS | |
4904 | || current_interface.type == INTERFACE_ABSTRACT) | |
4905 | { | |
4906 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
4907 | return MATCH_ERROR; | |
4908 | } | |
4909 | ||
4910 | for(;;) | |
4911 | { | |
4912 | m = gfc_match_name (name); | |
4913 | if (m == MATCH_NO) | |
4914 | goto syntax; | |
4915 | else if (m == MATCH_ERROR) | |
4916 | return m; | |
4917 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
4918 | return MATCH_ERROR; | |
4919 | ||
4920 | if (gfc_add_interface (sym) == FAILURE) | |
4921 | return MATCH_ERROR; | |
4922 | ||
69773742 JW |
4923 | if (gfc_match_eos () == MATCH_YES) |
4924 | break; | |
4925 | if (gfc_match_char (',') != MATCH_YES) | |
4926 | goto syntax; | |
4927 | } | |
4928 | ||
4929 | return MATCH_YES; | |
4930 | ||
4931 | syntax: | |
4932 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4933 | return MATCH_ERROR; | |
4934 | } | |
4935 | ||
4936 | ||
4937 | /* General matcher for PROCEDURE declarations. */ | |
4938 | ||
30b608eb DK |
4939 | static match match_procedure_in_type (void); |
4940 | ||
69773742 JW |
4941 | match |
4942 | gfc_match_procedure (void) | |
4943 | { | |
4944 | match m; | |
4945 | ||
4946 | switch (gfc_current_state ()) | |
4947 | { | |
4948 | case COMP_NONE: | |
4949 | case COMP_PROGRAM: | |
4950 | case COMP_MODULE: | |
4951 | case COMP_SUBROUTINE: | |
4952 | case COMP_FUNCTION: | |
4953 | m = match_procedure_decl (); | |
4954 | break; | |
4955 | case COMP_INTERFACE: | |
4956 | m = match_procedure_in_interface (); | |
4957 | break; | |
4958 | case COMP_DERIVED: | |
713485cc JW |
4959 | m = match_ppc_decl (); |
4960 | break; | |
30b608eb DK |
4961 | case COMP_DERIVED_CONTAINS: |
4962 | m = match_procedure_in_type (); | |
4963 | break; | |
69773742 JW |
4964 | default: |
4965 | return MATCH_NO; | |
4966 | } | |
4967 | ||
4968 | if (m != MATCH_YES) | |
4969 | return m; | |
4970 | ||
4971 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROCEDURE statement at %C") | |
4972 | == FAILURE) | |
4973 | return MATCH_ERROR; | |
4974 | ||
4975 | return m; | |
4976 | } | |
4977 | ||
4978 | ||
c3005b0f DK |
4979 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
4980 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
4981 | parser-state-stack to find out whether we're in a module. */ | |
4982 | ||
4983 | static void | |
4984 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
4985 | { | |
4986 | bool in_module; | |
4987 | ||
4988 | in_module = (gfc_state_stack->previous | |
4989 | && gfc_state_stack->previous->state == COMP_MODULE); | |
4990 | ||
4991 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
4992 | } | |
4993 | ||
4994 | ||
6de9cd9a DN |
4995 | /* Match a function declaration. */ |
4996 | ||
4997 | match | |
4998 | gfc_match_function_decl (void) | |
4999 | { | |
5000 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5001 | gfc_symbol *sym, *result; | |
5002 | locus old_loc; | |
5003 | match m; | |
a8b3b0b6 CR |
5004 | match suffix_match; |
5005 | match found_match; /* Status returned by match func. */ | |
6de9cd9a DN |
5006 | |
5007 | if (gfc_current_state () != COMP_NONE | |
5008 | && gfc_current_state () != COMP_INTERFACE | |
5009 | && gfc_current_state () != COMP_CONTAINS) | |
5010 | return MATCH_NO; | |
5011 | ||
5012 | gfc_clear_ts (¤t_ts); | |
5013 | ||
63645982 | 5014 | old_loc = gfc_current_locus; |
6de9cd9a | 5015 | |
1c8bcdf7 | 5016 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5017 | if (m != MATCH_YES) |
5018 | { | |
63645982 | 5019 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5020 | return m; |
5021 | } | |
5022 | ||
5023 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5024 | { | |
63645982 | 5025 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5026 | return MATCH_NO; |
5027 | } | |
1a492601 | 5028 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5029 | return MATCH_ERROR; |
3070bab4 JW |
5030 | |
5031 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
5032 | sym = sym->result; | |
5033 | ||
6de9cd9a DN |
5034 | gfc_new_block = sym; |
5035 | ||
5036 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5037 | if (m == MATCH_NO) | |
2b9a33ae TS |
5038 | { |
5039 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5040 | "definition at %C"); |
2b9a33ae TS |
5041 | m = MATCH_ERROR; |
5042 | goto cleanup; | |
5043 | } | |
6de9cd9a DN |
5044 | else if (m == MATCH_ERROR) |
5045 | goto cleanup; | |
5046 | ||
5047 | result = NULL; | |
5048 | ||
a8b3b0b6 CR |
5049 | /* According to the draft, the bind(c) and result clause can |
5050 | come in either order after the formal_arg_list (i.e., either | |
5051 | can be first, both can exist together or by themselves or neither | |
5052 | one). Therefore, the match_result can't match the end of the | |
5053 | string, and check for the bind(c) or result clause in either order. */ | |
5054 | found_match = gfc_match_eos (); | |
5055 | ||
5056 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5057 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5058 | not allowed for procedures. */ | |
5059 | if (sym->attr.is_bind_c == 1) | |
5060 | { | |
5061 | sym->attr.is_bind_c = 0; | |
5062 | if (sym->old_symbol != NULL) | |
5063 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5064 | "variables or common blocks", | |
5065 | &(sym->old_symbol->declared_at)); | |
5066 | else | |
5067 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5068 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5069 | } |
5070 | ||
a8b3b0b6 | 5071 | if (found_match != MATCH_YES) |
6de9cd9a | 5072 | { |
a8b3b0b6 CR |
5073 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5074 | suffix_match = gfc_match_suffix (sym, &result); | |
5075 | if (suffix_match == MATCH_YES) | |
5076 | /* Need to get the eos now. */ | |
5077 | found_match = gfc_match_eos (); | |
5078 | else | |
5079 | found_match = suffix_match; | |
6de9cd9a DN |
5080 | } |
5081 | ||
a8b3b0b6 CR |
5082 | if(found_match != MATCH_YES) |
5083 | m = MATCH_ERROR; | |
6de9cd9a DN |
5084 | else |
5085 | { | |
a8b3b0b6 CR |
5086 | /* Make changes to the symbol. */ |
5087 | m = MATCH_ERROR; | |
5088 | ||
5089 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
5090 | goto cleanup; | |
5091 | ||
5092 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
5093 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5094 | goto cleanup; | |
6de9cd9a | 5095 | |
a99d95a2 | 5096 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5097 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5098 | sym->declared_at = old_loc; |
5099 | if (current_ts.type != BT_UNKNOWN) | |
5100 | current_ts.kind = -1; | |
5101 | else | |
5102 | current_ts.kind = 0; | |
1c8bcdf7 | 5103 | |
a8b3b0b6 CR |
5104 | if (result == NULL) |
5105 | { | |
6de7294f JW |
5106 | if (current_ts.type != BT_UNKNOWN |
5107 | && gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) | |
5108 | goto cleanup; | |
a8b3b0b6 CR |
5109 | sym->result = sym; |
5110 | } | |
5111 | else | |
5112 | { | |
6de7294f JW |
5113 | if (current_ts.type != BT_UNKNOWN |
5114 | && gfc_add_type (result, ¤t_ts, &gfc_current_locus) | |
5115 | == FAILURE) | |
5116 | goto cleanup; | |
a8b3b0b6 CR |
5117 | sym->result = result; |
5118 | } | |
5119 | ||
c3005b0f DK |
5120 | /* Warn if this procedure has the same name as an intrinsic. */ |
5121 | warn_intrinsic_shadow (sym, true); | |
5122 | ||
a8b3b0b6 CR |
5123 | return MATCH_YES; |
5124 | } | |
6de9cd9a DN |
5125 | |
5126 | cleanup: | |
63645982 | 5127 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5128 | return m; |
5129 | } | |
5130 | ||
636dff67 SK |
5131 | |
5132 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5133 | pass the name of the entry, rather than the gfc_current_block name, and | |
5134 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5135 | |
5136 | static bool | |
636dff67 | 5137 | add_global_entry (const char *name, int sub) |
68ea355b PT |
5138 | { |
5139 | gfc_gsymbol *s; | |
32e8bb8e | 5140 | enum gfc_symbol_type type; |
68ea355b PT |
5141 | |
5142 | s = gfc_get_gsymbol(name); | |
7389bce6 | 5143 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b PT |
5144 | |
5145 | if (s->defined | |
636dff67 | 5146 | || (s->type != GSYM_UNKNOWN |
7389bce6 | 5147 | && s->type != type)) |
ca39e6f2 | 5148 | gfc_global_used(s, NULL); |
68ea355b PT |
5149 | else |
5150 | { | |
7389bce6 | 5151 | s->type = type; |
68ea355b PT |
5152 | s->where = gfc_current_locus; |
5153 | s->defined = 1; | |
71a7778c | 5154 | s->ns = gfc_current_ns; |
68ea355b PT |
5155 | return true; |
5156 | } | |
5157 | return false; | |
5158 | } | |
6de9cd9a | 5159 | |
636dff67 | 5160 | |
6de9cd9a DN |
5161 | /* Match an ENTRY statement. */ |
5162 | ||
5163 | match | |
5164 | gfc_match_entry (void) | |
5165 | { | |
3d79abbd PB |
5166 | gfc_symbol *proc; |
5167 | gfc_symbol *result; | |
5168 | gfc_symbol *entry; | |
6de9cd9a DN |
5169 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5170 | gfc_compile_state state; | |
5171 | match m; | |
3d79abbd | 5172 | gfc_entry_list *el; |
c96cfa49 | 5173 | locus old_loc; |
1a492601 | 5174 | bool module_procedure; |
bc3e7a8c TB |
5175 | char peek_char; |
5176 | match is_bind_c; | |
6de9cd9a DN |
5177 | |
5178 | m = gfc_match_name (name); | |
5179 | if (m != MATCH_YES) | |
5180 | return m; | |
5181 | ||
58fc89f6 TB |
5182 | if (gfc_notify_std (GFC_STD_F2008_OBS, "Fortran 2008 obsolescent feature: " |
5183 | "ENTRY statement at %C") == FAILURE) | |
5184 | return MATCH_ERROR; | |
5185 | ||
3d79abbd | 5186 | state = gfc_current_state (); |
4c93c95a | 5187 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5188 | { |
4c93c95a FXC |
5189 | switch (state) |
5190 | { | |
5191 | case COMP_PROGRAM: | |
5192 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5193 | break; | |
5194 | case COMP_MODULE: | |
5195 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5196 | break; | |
5197 | case COMP_BLOCK_DATA: | |
636dff67 SK |
5198 | gfc_error ("ENTRY statement at %C cannot appear within " |
5199 | "a BLOCK DATA"); | |
4c93c95a FXC |
5200 | break; |
5201 | case COMP_INTERFACE: | |
636dff67 SK |
5202 | gfc_error ("ENTRY statement at %C cannot appear within " |
5203 | "an INTERFACE"); | |
4c93c95a FXC |
5204 | break; |
5205 | case COMP_DERIVED: | |
636dff67 SK |
5206 | gfc_error ("ENTRY statement at %C cannot appear within " |
5207 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5208 | break; |
5209 | case COMP_IF: | |
636dff67 SK |
5210 | gfc_error ("ENTRY statement at %C cannot appear within " |
5211 | "an IF-THEN block"); | |
4c93c95a FXC |
5212 | break; |
5213 | case COMP_DO: | |
636dff67 SK |
5214 | gfc_error ("ENTRY statement at %C cannot appear within " |
5215 | "a DO block"); | |
4c93c95a FXC |
5216 | break; |
5217 | case COMP_SELECT: | |
636dff67 SK |
5218 | gfc_error ("ENTRY statement at %C cannot appear within " |
5219 | "a SELECT block"); | |
4c93c95a FXC |
5220 | break; |
5221 | case COMP_FORALL: | |
636dff67 SK |
5222 | gfc_error ("ENTRY statement at %C cannot appear within " |
5223 | "a FORALL block"); | |
4c93c95a FXC |
5224 | break; |
5225 | case COMP_WHERE: | |
636dff67 SK |
5226 | gfc_error ("ENTRY statement at %C cannot appear within " |
5227 | "a WHERE block"); | |
4c93c95a FXC |
5228 | break; |
5229 | case COMP_CONTAINS: | |
636dff67 SK |
5230 | gfc_error ("ENTRY statement at %C cannot appear within " |
5231 | "a contained subprogram"); | |
4c93c95a FXC |
5232 | break; |
5233 | default: | |
5234 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5235 | } | |
3d79abbd PB |
5236 | return MATCH_ERROR; |
5237 | } | |
5238 | ||
1a492601 | 5239 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5240 | && gfc_current_ns->parent->proc_name |
5241 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5242 | == FL_MODULE; | |
1a492601 | 5243 | |
3d79abbd PB |
5244 | if (gfc_current_ns->parent != NULL |
5245 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5246 | && !module_procedure) |
3d79abbd PB |
5247 | { |
5248 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5249 | "contained procedure"); | |
5250 | return MATCH_ERROR; | |
5251 | } | |
5252 | ||
1a492601 PT |
5253 | /* Module function entries need special care in get_proc_name |
5254 | because previous references within the function will have | |
5255 | created symbols attached to the current namespace. */ | |
5256 | if (get_proc_name (name, &entry, | |
5257 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5258 | && module_procedure)) |
6de9cd9a DN |
5259 | return MATCH_ERROR; |
5260 | ||
3d79abbd PB |
5261 | proc = gfc_current_block (); |
5262 | ||
bc3e7a8c TB |
5263 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5264 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5265 | not allowed for procedures. */ | |
5266 | if (entry->attr.is_bind_c == 1) | |
5267 | { | |
5268 | entry->attr.is_bind_c = 0; | |
5269 | if (entry->old_symbol != NULL) | |
5270 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5271 | "variables or common blocks", | |
5272 | &(entry->old_symbol->declared_at)); | |
5273 | else | |
5274 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5275 | "variables or common blocks", &gfc_current_locus); | |
5276 | } | |
5277 | ||
5278 | /* Check what next non-whitespace character is so we can tell if there | |
5279 | is the required parens if we have a BIND(C). */ | |
5280 | gfc_gobble_whitespace (); | |
8fc541d3 | 5281 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5282 | |
3d79abbd | 5283 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5284 | { |
231b2fcc | 5285 | /* An entry in a subroutine. */ |
182393f4 | 5286 | if (!gfc_current_ns->parent && !add_global_entry (name, 1)) |
68ea355b PT |
5287 | return MATCH_ERROR; |
5288 | ||
6de9cd9a DN |
5289 | m = gfc_match_formal_arglist (entry, 0, 1); |
5290 | if (m != MATCH_YES) | |
5291 | return MATCH_ERROR; | |
5292 | ||
1eabf70a TB |
5293 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5294 | never be an internal procedure. */ | |
5295 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5296 | if (is_bind_c == MATCH_ERROR) |
5297 | return MATCH_ERROR; | |
5298 | if (is_bind_c == MATCH_YES) | |
5299 | { | |
5300 | if (peek_char != '(') | |
5301 | { | |
5302 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5303 | return MATCH_ERROR; | |
5304 | } | |
5305 | if (gfc_add_is_bind_c (&(entry->attr), entry->name, &(entry->declared_at), 1) | |
5306 | == FAILURE) | |
5307 | return MATCH_ERROR; | |
5308 | } | |
5309 | ||
231b2fcc TS |
5310 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5311 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a | 5312 | return MATCH_ERROR; |
3d79abbd PB |
5313 | } |
5314 | else | |
5315 | { | |
c96cfa49 | 5316 | /* An entry in a function. |
636dff67 SK |
5317 | We need to take special care because writing |
5318 | ENTRY f() | |
5319 | as | |
5320 | ENTRY f | |
5321 | is allowed, whereas | |
5322 | ENTRY f() RESULT (r) | |
5323 | can't be written as | |
5324 | ENTRY f RESULT (r). */ | |
182393f4 | 5325 | if (!gfc_current_ns->parent && !add_global_entry (name, 0)) |
68ea355b PT |
5326 | return MATCH_ERROR; |
5327 | ||
c96cfa49 TS |
5328 | old_loc = gfc_current_locus; |
5329 | if (gfc_match_eos () == MATCH_YES) | |
5330 | { | |
5331 | gfc_current_locus = old_loc; | |
5332 | /* Match the empty argument list, and add the interface to | |
5333 | the symbol. */ | |
5334 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5335 | } | |
5336 | else | |
5337 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5338 | ||
6de9cd9a DN |
5339 | if (m != MATCH_YES) |
5340 | return MATCH_ERROR; | |
5341 | ||
6de9cd9a DN |
5342 | result = NULL; |
5343 | ||
5344 | if (gfc_match_eos () == MATCH_YES) | |
5345 | { | |
231b2fcc TS |
5346 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5347 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a DN |
5348 | return MATCH_ERROR; |
5349 | ||
d198b59a | 5350 | entry->result = entry; |
6de9cd9a DN |
5351 | } |
5352 | else | |
5353 | { | |
bc3e7a8c | 5354 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5355 | if (m == MATCH_NO) |
5356 | gfc_syntax_error (ST_ENTRY); | |
5357 | if (m != MATCH_YES) | |
5358 | return MATCH_ERROR; | |
5359 | ||
bc3e7a8c TB |
5360 | if (result) |
5361 | { | |
5362 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE | |
5363 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
5364 | || gfc_add_function (&entry->attr, result->name, NULL) | |
5365 | == FAILURE) | |
5366 | return MATCH_ERROR; | |
5367 | entry->result = result; | |
5368 | } | |
5369 | else | |
5370 | { | |
5371 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE | |
5372 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
5373 | return MATCH_ERROR; | |
5374 | entry->result = entry; | |
5375 | } | |
6de9cd9a | 5376 | } |
6de9cd9a DN |
5377 | } |
5378 | ||
5379 | if (gfc_match_eos () != MATCH_YES) | |
5380 | { | |
5381 | gfc_syntax_error (ST_ENTRY); | |
5382 | return MATCH_ERROR; | |
5383 | } | |
5384 | ||
3d79abbd PB |
5385 | entry->attr.recursive = proc->attr.recursive; |
5386 | entry->attr.elemental = proc->attr.elemental; | |
5387 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5388 | |
3d79abbd PB |
5389 | el = gfc_get_entry_list (); |
5390 | el->sym = entry; | |
5391 | el->next = gfc_current_ns->entries; | |
5392 | gfc_current_ns->entries = el; | |
5393 | if (el->next) | |
5394 | el->id = el->next->id + 1; | |
5395 | else | |
5396 | el->id = 1; | |
6de9cd9a | 5397 | |
3d79abbd PB |
5398 | new_st.op = EXEC_ENTRY; |
5399 | new_st.ext.entry = el; | |
5400 | ||
5401 | return MATCH_YES; | |
6de9cd9a DN |
5402 | } |
5403 | ||
5404 | ||
5405 | /* Match a subroutine statement, including optional prefixes. */ | |
5406 | ||
5407 | match | |
5408 | gfc_match_subroutine (void) | |
5409 | { | |
5410 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5411 | gfc_symbol *sym; | |
5412 | match m; | |
a8b3b0b6 CR |
5413 | match is_bind_c; |
5414 | char peek_char; | |
1eabf70a | 5415 | bool allow_binding_name; |
6de9cd9a DN |
5416 | |
5417 | if (gfc_current_state () != COMP_NONE | |
5418 | && gfc_current_state () != COMP_INTERFACE | |
5419 | && gfc_current_state () != COMP_CONTAINS) | |
5420 | return MATCH_NO; | |
5421 | ||
1c8bcdf7 | 5422 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5423 | if (m != MATCH_YES) |
5424 | return m; | |
5425 | ||
5426 | m = gfc_match ("subroutine% %n", name); | |
5427 | if (m != MATCH_YES) | |
5428 | return m; | |
5429 | ||
1a492601 | 5430 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5431 | return MATCH_ERROR; |
3070bab4 | 5432 | |
7fcd5ad5 TB |
5433 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5434 | the symbol existed before. */ | |
5435 | sym->declared_at = gfc_current_locus; | |
5436 | ||
3070bab4 JW |
5437 | if (add_hidden_procptr_result (sym) == SUCCESS) |
5438 | sym = sym->result; | |
5439 | ||
6de9cd9a DN |
5440 | gfc_new_block = sym; |
5441 | ||
a8b3b0b6 | 5442 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5443 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5444 | gfc_gobble_whitespace (); |
8fc541d3 | 5445 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 5446 | |
231b2fcc | 5447 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5448 | return MATCH_ERROR; |
5449 | ||
5450 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5451 | return MATCH_ERROR; | |
5452 | ||
a8b3b0b6 CR |
5453 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5454 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5455 | not allowed for procedures. */ | |
5456 | if (sym->attr.is_bind_c == 1) | |
5457 | { | |
5458 | sym->attr.is_bind_c = 0; | |
5459 | if (sym->old_symbol != NULL) | |
5460 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5461 | "variables or common blocks", | |
5462 | &(sym->old_symbol->declared_at)); | |
5463 | else | |
5464 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5465 | "variables or common blocks", &gfc_current_locus); | |
5466 | } | |
1eabf70a TB |
5467 | |
5468 | /* C binding names are not allowed for internal procedures. */ | |
5469 | if (gfc_current_state () == COMP_CONTAINS | |
5470 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5471 | allow_binding_name = false; | |
5472 | else | |
5473 | allow_binding_name = true; | |
5474 | ||
a8b3b0b6 CR |
5475 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5476 | so, then we need to make sure it's all correct. If it doesn't, | |
5477 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5478 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5479 | if (is_bind_c == MATCH_ERROR) |
5480 | { | |
5481 | /* There was an attempt at the bind(c), but it was wrong. An | |
5482 | error message should have been printed w/in the gfc_match_bind_c | |
5483 | so here we'll just return the MATCH_ERROR. */ | |
5484 | return MATCH_ERROR; | |
5485 | } | |
5486 | ||
5487 | if (is_bind_c == MATCH_YES) | |
5488 | { | |
1eabf70a | 5489 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 5490 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5491 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
fdc54e88 FXC |
5492 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
5493 | "at %L may not be specified for an internal " | |
5494 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
5495 | == FAILURE) |
5496 | return MATCH_ERROR; | |
5497 | ||
a8b3b0b6 CR |
5498 | if (peek_char != '(') |
5499 | { | |
5500 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5501 | return MATCH_ERROR; | |
5502 | } | |
5503 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
5504 | == FAILURE) | |
5505 | return MATCH_ERROR; | |
5506 | } | |
5507 | ||
6de9cd9a DN |
5508 | if (gfc_match_eos () != MATCH_YES) |
5509 | { | |
5510 | gfc_syntax_error (ST_SUBROUTINE); | |
5511 | return MATCH_ERROR; | |
5512 | } | |
5513 | ||
5514 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5515 | return MATCH_ERROR; | |
5516 | ||
c3005b0f DK |
5517 | /* Warn if it has the same name as an intrinsic. */ |
5518 | warn_intrinsic_shadow (sym, false); | |
5519 | ||
6de9cd9a DN |
5520 | return MATCH_YES; |
5521 | } | |
5522 | ||
5523 | ||
a8b3b0b6 CR |
5524 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5525 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 5526 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
5527 | encounter the BIND(C) before the declaration itself. Return |
5528 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5529 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5530 | or MATCH_YES if the specifier was correct and the binding label and | |
5531 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
5532 | current_ts. If allow_binding_name is false, no binding name may be |
5533 | given. */ | |
a8b3b0b6 CR |
5534 | |
5535 | match | |
1eabf70a | 5536 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 CR |
5537 | { |
5538 | /* binding label, if exists */ | |
5539 | char binding_label[GFC_MAX_SYMBOL_LEN + 1]; | |
5540 | match double_quote; | |
5541 | match single_quote; | |
a8b3b0b6 CR |
5542 | |
5543 | /* Initialize the flag that specifies whether we encountered a NAME= | |
5544 | specifier or not. */ | |
5545 | has_name_equals = 0; | |
5546 | ||
5547 | /* Init the first char to nil so we can catch if we don't have | |
5548 | the label (name attr) or the symbol name yet. */ | |
5549 | binding_label[0] = '\0'; | |
5550 | ||
5551 | /* This much we have to be able to match, in this order, if | |
5552 | there is a bind(c) label. */ | |
5553 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5554 | return MATCH_NO; | |
5555 | ||
5556 | /* Now see if there is a binding label, or if we've reached the | |
5557 | end of the bind(c) attribute without one. */ | |
5558 | if (gfc_match_char (',') == MATCH_YES) | |
5559 | { | |
5560 | if (gfc_match (" name = ") != MATCH_YES) | |
5561 | { | |
5562 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5563 | "at %C"); | |
5564 | /* should give an error message here */ | |
5565 | return MATCH_ERROR; | |
5566 | } | |
5567 | ||
5568 | has_name_equals = 1; | |
5569 | ||
5570 | /* Get the opening quote. */ | |
5571 | double_quote = MATCH_YES; | |
5572 | single_quote = MATCH_YES; | |
5573 | double_quote = gfc_match_char ('"'); | |
5574 | if (double_quote != MATCH_YES) | |
5575 | single_quote = gfc_match_char ('\''); | |
5576 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5577 | { | |
5578 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5579 | "at %C"); | |
5580 | return MATCH_ERROR; | |
5581 | } | |
5582 | ||
5583 | /* Grab the binding label, using functions that will not lower | |
5584 | case the names automatically. */ | |
5585 | if (gfc_match_name_C (binding_label) != MATCH_YES) | |
5586 | return MATCH_ERROR; | |
5587 | ||
5588 | /* Get the closing quotation. */ | |
5589 | if (double_quote == MATCH_YES) | |
5590 | { | |
5591 | if (gfc_match_char ('"') != MATCH_YES) | |
5592 | { | |
5593 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5594 | /* User started string with '"' so looked to match it. */ | |
5595 | return MATCH_ERROR; | |
5596 | } | |
5597 | } | |
5598 | else | |
5599 | { | |
5600 | if (gfc_match_char ('\'') != MATCH_YES) | |
5601 | { | |
5602 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5603 | /* User started string with "'" char. */ | |
5604 | return MATCH_ERROR; | |
5605 | } | |
5606 | } | |
5607 | } | |
5608 | ||
5609 | /* Get the required right paren. */ | |
5610 | if (gfc_match_char (')') != MATCH_YES) | |
5611 | { | |
5612 | gfc_error ("Missing closing paren for binding label at %C"); | |
5613 | return MATCH_ERROR; | |
5614 | } | |
5615 | ||
1eabf70a TB |
5616 | if (has_name_equals && !allow_binding_name) |
5617 | { | |
5618 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5619 | return MATCH_ERROR; | |
5620 | } | |
5621 | ||
5622 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5623 | { | |
5624 | gfc_error ("For dummy procedure %s, no binding name is " | |
5625 | "allowed in BIND(C) at %C", sym->name); | |
5626 | return MATCH_ERROR; | |
5627 | } | |
5628 | ||
5629 | ||
a8b3b0b6 CR |
5630 | /* Save the binding label to the symbol. If sym is null, we're |
5631 | probably matching the typespec attributes of a declaration and | |
5632 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
5633 | if (binding_label[0] != '\0') | |
5634 | { | |
5635 | if (sym != NULL) | |
5636 | { | |
c5b5a17a | 5637 | strcpy (sym->binding_label, binding_label); |
a8b3b0b6 CR |
5638 | } |
5639 | else | |
c5b5a17a | 5640 | strcpy (curr_binding_label, binding_label); |
a8b3b0b6 | 5641 | } |
1eabf70a | 5642 | else if (allow_binding_name) |
a8b3b0b6 CR |
5643 | { |
5644 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
5645 | can set the label for it here. |
5646 | If name="" or allow_binding_name is false, no C binding name is | |
5647 | created. */ | |
a8b3b0b6 CR |
5648 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
5649 | strncpy (sym->binding_label, sym->name, strlen (sym->name) + 1); | |
5650 | } | |
9e1d712c | 5651 | |
129d15a3 JW |
5652 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5653 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
5654 | { |
5655 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5656 | return MATCH_ERROR; | |
5657 | } | |
5658 | ||
a8b3b0b6 CR |
5659 | return MATCH_YES; |
5660 | } | |
5661 | ||
5662 | ||
1f2959f0 | 5663 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
5664 | |
5665 | static int | |
5666 | contained_procedure (void) | |
5667 | { | |
083de129 | 5668 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 5669 | |
083de129 TB |
5670 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5671 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5672 | return 1; | |
ddc9ce91 TS |
5673 | |
5674 | return 0; | |
5675 | } | |
5676 | ||
d51347f9 | 5677 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
5678 | interoperable with the corresponding C enumeration type, making |
5679 | sure that -fshort-enums is honored. */ | |
5680 | ||
5681 | static void | |
5682 | set_enum_kind(void) | |
5683 | { | |
5684 | enumerator_history *current_history = NULL; | |
5685 | int kind; | |
5686 | int i; | |
5687 | ||
5688 | if (max_enum == NULL || enum_history == NULL) | |
5689 | return; | |
5690 | ||
cab129d1 | 5691 | if (!flag_short_enums) |
d51347f9 TB |
5692 | return; |
5693 | ||
25d8f0a2 TS |
5694 | i = 0; |
5695 | do | |
5696 | { | |
5697 | kind = gfc_integer_kinds[i++].kind; | |
5698 | } | |
d51347f9 | 5699 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
5700 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5701 | kind) != ARITH_OK); | |
5702 | ||
5703 | current_history = enum_history; | |
5704 | while (current_history != NULL) | |
5705 | { | |
5706 | current_history->sym->ts.kind = kind; | |
5707 | current_history = current_history->next; | |
5708 | } | |
5709 | } | |
5710 | ||
636dff67 | 5711 | |
6de9cd9a | 5712 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
5713 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5714 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
5715 | |
5716 | match | |
636dff67 | 5717 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
5718 | { |
5719 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5720 | gfc_compile_state state; | |
5721 | locus old_loc; | |
5722 | const char *block_name; | |
5723 | const char *target; | |
ddc9ce91 | 5724 | int eos_ok; |
6de9cd9a DN |
5725 | match m; |
5726 | ||
63645982 | 5727 | old_loc = gfc_current_locus; |
6de9cd9a DN |
5728 | if (gfc_match ("end") != MATCH_YES) |
5729 | return MATCH_NO; | |
5730 | ||
5731 | state = gfc_current_state (); | |
636dff67 SK |
5732 | block_name = gfc_current_block () == NULL |
5733 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 5734 | |
03af1e4c | 5735 | switch (state) |
6de9cd9a | 5736 | { |
03af1e4c DK |
5737 | case COMP_ASSOCIATE: |
5738 | case COMP_BLOCK: | |
5739 | if (!strcmp (block_name, "block@")) | |
5740 | block_name = NULL; | |
5741 | break; | |
5742 | ||
5743 | case COMP_CONTAINS: | |
5744 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 5745 | state = gfc_state_stack->previous->state; |
636dff67 SK |
5746 | block_name = gfc_state_stack->previous->sym == NULL |
5747 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
5748 | break; |
5749 | ||
5750 | default: | |
5751 | break; | |
6de9cd9a DN |
5752 | } |
5753 | ||
5754 | switch (state) | |
5755 | { | |
5756 | case COMP_NONE: | |
5757 | case COMP_PROGRAM: | |
5758 | *st = ST_END_PROGRAM; | |
5759 | target = " program"; | |
ddc9ce91 | 5760 | eos_ok = 1; |
6de9cd9a DN |
5761 | break; |
5762 | ||
5763 | case COMP_SUBROUTINE: | |
5764 | *st = ST_END_SUBROUTINE; | |
5765 | target = " subroutine"; | |
ddc9ce91 | 5766 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5767 | break; |
5768 | ||
5769 | case COMP_FUNCTION: | |
5770 | *st = ST_END_FUNCTION; | |
5771 | target = " function"; | |
ddc9ce91 | 5772 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5773 | break; |
5774 | ||
5775 | case COMP_BLOCK_DATA: | |
5776 | *st = ST_END_BLOCK_DATA; | |
5777 | target = " block data"; | |
ddc9ce91 | 5778 | eos_ok = 1; |
6de9cd9a DN |
5779 | break; |
5780 | ||
5781 | case COMP_MODULE: | |
5782 | *st = ST_END_MODULE; | |
5783 | target = " module"; | |
ddc9ce91 | 5784 | eos_ok = 1; |
6de9cd9a DN |
5785 | break; |
5786 | ||
5787 | case COMP_INTERFACE: | |
5788 | *st = ST_END_INTERFACE; | |
5789 | target = " interface"; | |
ddc9ce91 | 5790 | eos_ok = 0; |
6de9cd9a DN |
5791 | break; |
5792 | ||
5793 | case COMP_DERIVED: | |
30b608eb | 5794 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
5795 | *st = ST_END_TYPE; |
5796 | target = " type"; | |
ddc9ce91 | 5797 | eos_ok = 0; |
6de9cd9a DN |
5798 | break; |
5799 | ||
03af1e4c DK |
5800 | case COMP_ASSOCIATE: |
5801 | *st = ST_END_ASSOCIATE; | |
5802 | target = " associate"; | |
5803 | eos_ok = 0; | |
5804 | break; | |
5805 | ||
9abe5e56 DK |
5806 | case COMP_BLOCK: |
5807 | *st = ST_END_BLOCK; | |
5808 | target = " block"; | |
5809 | eos_ok = 0; | |
5810 | break; | |
5811 | ||
6de9cd9a DN |
5812 | case COMP_IF: |
5813 | *st = ST_ENDIF; | |
5814 | target = " if"; | |
ddc9ce91 | 5815 | eos_ok = 0; |
6de9cd9a DN |
5816 | break; |
5817 | ||
5818 | case COMP_DO: | |
5819 | *st = ST_ENDDO; | |
5820 | target = " do"; | |
ddc9ce91 | 5821 | eos_ok = 0; |
6de9cd9a DN |
5822 | break; |
5823 | ||
d0a4a61c TB |
5824 | case COMP_CRITICAL: |
5825 | *st = ST_END_CRITICAL; | |
5826 | target = " critical"; | |
5827 | eos_ok = 0; | |
5828 | break; | |
5829 | ||
6de9cd9a | 5830 | case COMP_SELECT: |
cf2b3c22 | 5831 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
5832 | *st = ST_END_SELECT; |
5833 | target = " select"; | |
ddc9ce91 | 5834 | eos_ok = 0; |
6de9cd9a DN |
5835 | break; |
5836 | ||
5837 | case COMP_FORALL: | |
5838 | *st = ST_END_FORALL; | |
5839 | target = " forall"; | |
ddc9ce91 | 5840 | eos_ok = 0; |
6de9cd9a DN |
5841 | break; |
5842 | ||
5843 | case COMP_WHERE: | |
5844 | *st = ST_END_WHERE; | |
5845 | target = " where"; | |
ddc9ce91 | 5846 | eos_ok = 0; |
6de9cd9a DN |
5847 | break; |
5848 | ||
25d8f0a2 TS |
5849 | case COMP_ENUM: |
5850 | *st = ST_END_ENUM; | |
5851 | target = " enum"; | |
5852 | eos_ok = 0; | |
5853 | last_initializer = NULL; | |
5854 | set_enum_kind (); | |
5855 | gfc_free_enum_history (); | |
5856 | break; | |
5857 | ||
6de9cd9a DN |
5858 | default: |
5859 | gfc_error ("Unexpected END statement at %C"); | |
5860 | goto cleanup; | |
5861 | } | |
5862 | ||
5863 | if (gfc_match_eos () == MATCH_YES) | |
5864 | { | |
272001a2 TB |
5865 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
5866 | { | |
5867 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: END statement " | |
5868 | "instead of %s statement at %L", | |
5869 | gfc_ascii_statement (*st), &old_loc) == FAILURE) | |
5870 | goto cleanup; | |
5871 | } | |
5872 | else if (!eos_ok) | |
6de9cd9a | 5873 | { |
66e4ab31 | 5874 | /* We would have required END [something]. */ |
59ce85b5 TS |
5875 | gfc_error ("%s statement expected at %L", |
5876 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
5877 | goto cleanup; |
5878 | } | |
5879 | ||
5880 | return MATCH_YES; | |
5881 | } | |
5882 | ||
5883 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
5884 | if (gfc_match (target) != MATCH_YES) | |
5885 | { | |
5886 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
5887 | goto cleanup; | |
5888 | } | |
5889 | ||
5890 | /* If we're at the end, make sure a block name wasn't required. */ | |
5891 | if (gfc_match_eos () == MATCH_YES) | |
5892 | { | |
5893 | ||
690af379 | 5894 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 5895 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 5896 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
5897 | return MATCH_YES; |
5898 | ||
9abe5e56 | 5899 | if (!block_name) |
6de9cd9a DN |
5900 | return MATCH_YES; |
5901 | ||
5902 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
5903 | block_name, gfc_ascii_statement (*st)); | |
5904 | ||
5905 | return MATCH_ERROR; | |
5906 | } | |
5907 | ||
5908 | /* END INTERFACE has a special handler for its several possible endings. */ | |
5909 | if (*st == ST_END_INTERFACE) | |
5910 | return gfc_match_end_interface (); | |
5911 | ||
66e4ab31 SK |
5912 | /* We haven't hit the end of statement, so what is left must be an |
5913 | end-name. */ | |
6de9cd9a DN |
5914 | m = gfc_match_space (); |
5915 | if (m == MATCH_YES) | |
5916 | m = gfc_match_name (name); | |
5917 | ||
5918 | if (m == MATCH_NO) | |
5919 | gfc_error ("Expected terminating name at %C"); | |
5920 | if (m != MATCH_YES) | |
5921 | goto cleanup; | |
5922 | ||
5923 | if (block_name == NULL) | |
5924 | goto syntax; | |
5925 | ||
3070bab4 | 5926 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a DN |
5927 | { |
5928 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
5929 | gfc_ascii_statement (*st)); | |
5930 | goto cleanup; | |
5931 | } | |
3070bab4 JW |
5932 | /* Procedure pointer as function result. */ |
5933 | else if (strcmp (block_name, "ppr@") == 0 | |
5934 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
5935 | { | |
5936 | gfc_error ("Expected label '%s' for %s statement at %C", | |
5937 | gfc_current_block ()->ns->proc_name->name, | |
5938 | gfc_ascii_statement (*st)); | |
5939 | goto cleanup; | |
5940 | } | |
6de9cd9a DN |
5941 | |
5942 | if (gfc_match_eos () == MATCH_YES) | |
5943 | return MATCH_YES; | |
5944 | ||
5945 | syntax: | |
5946 | gfc_syntax_error (*st); | |
5947 | ||
5948 | cleanup: | |
63645982 | 5949 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5950 | return MATCH_ERROR; |
5951 | } | |
5952 | ||
5953 | ||
5954 | ||
5955 | /***************** Attribute declaration statements ****************/ | |
5956 | ||
5957 | /* Set the attribute of a single variable. */ | |
5958 | ||
5959 | static match | |
5960 | attr_decl1 (void) | |
5961 | { | |
5962 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5963 | gfc_array_spec *as; | |
5964 | gfc_symbol *sym; | |
5965 | locus var_locus; | |
5966 | match m; | |
5967 | ||
5968 | as = NULL; | |
5969 | ||
5970 | m = gfc_match_name (name); | |
5971 | if (m != MATCH_YES) | |
5972 | goto cleanup; | |
5973 | ||
08a6b8e0 | 5974 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
5975 | return MATCH_ERROR; |
5976 | ||
63645982 | 5977 | var_locus = gfc_current_locus; |
6de9cd9a DN |
5978 | |
5979 | /* Deal with possible array specification for certain attributes. */ | |
5980 | if (current_attr.dimension | |
be59db2d | 5981 | || current_attr.codimension |
6de9cd9a DN |
5982 | || current_attr.allocatable |
5983 | || current_attr.pointer | |
5984 | || current_attr.target) | |
5985 | { | |
be59db2d TB |
5986 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
5987 | !current_attr.dimension | |
5988 | && !current_attr.pointer | |
5989 | && !current_attr.target); | |
6de9cd9a DN |
5990 | if (m == MATCH_ERROR) |
5991 | goto cleanup; | |
5992 | ||
5993 | if (current_attr.dimension && m == MATCH_NO) | |
5994 | { | |
636dff67 SK |
5995 | gfc_error ("Missing array specification at %L in DIMENSION " |
5996 | "statement", &var_locus); | |
6de9cd9a DN |
5997 | m = MATCH_ERROR; |
5998 | goto cleanup; | |
5999 | } | |
6000 | ||
1283ab12 TB |
6001 | if (current_attr.dimension && sym->value) |
6002 | { | |
6003 | gfc_error ("Dimensions specified for %s at %L after its " | |
6004 | "initialisation", sym->name, &var_locus); | |
6005 | m = MATCH_ERROR; | |
6006 | goto cleanup; | |
6007 | } | |
6008 | ||
be59db2d TB |
6009 | if (current_attr.codimension && m == MATCH_NO) |
6010 | { | |
6011 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6012 | "statement", &var_locus); | |
6013 | m = MATCH_ERROR; | |
6014 | goto cleanup; | |
6015 | } | |
6016 | ||
6de9cd9a DN |
6017 | if ((current_attr.allocatable || current_attr.pointer) |
6018 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6019 | { | |
636dff67 | 6020 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6021 | m = MATCH_ERROR; |
6022 | goto cleanup; | |
6023 | } | |
6024 | } | |
6025 | ||
2e23972e JW |
6026 | /* Update symbol table. DIMENSION attribute is set in |
6027 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6028 | to the first component, or '_data' field. */ |
d40477b4 | 6029 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6030 | { |
b04533af | 6031 | if (gfc_copy_attr (&CLASS_DATA (sym)->attr, ¤t_attr, &var_locus) |
7a08eda1 | 6032 | == FAILURE) |
2e23972e JW |
6033 | { |
6034 | m = MATCH_ERROR; | |
6035 | goto cleanup; | |
6036 | } | |
2e23972e JW |
6037 | } |
6038 | else | |
6039 | { | |
be59db2d TB |
6040 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
6041 | && gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus) == FAILURE) | |
2e23972e JW |
6042 | { |
6043 | m = MATCH_ERROR; | |
6044 | goto cleanup; | |
6045 | } | |
6de9cd9a | 6046 | } |
d40477b4 JW |
6047 | |
6048 | if (sym->ts.type == BT_CLASS && !sym->attr.class_ok | |
6049 | && (sym->attr.class_ok = sym->attr.class_ok || current_attr.allocatable | |
96d9b22c JW |
6050 | || current_attr.pointer) |
6051 | && gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false) == FAILURE) | |
6052 | { | |
6053 | m = MATCH_ERROR; | |
6054 | goto cleanup; | |
6055 | } | |
6de9cd9a DN |
6056 | |
6057 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
6058 | { | |
6059 | m = MATCH_ERROR; | |
6060 | goto cleanup; | |
6061 | } | |
d51347f9 | 6062 | |
83d890b9 AL |
6063 | if (sym->attr.cray_pointee && sym->as != NULL) |
6064 | { | |
6065 | /* Fix the array spec. */ | |
6066 | m = gfc_mod_pointee_as (sym->as); | |
6067 | if (m == MATCH_ERROR) | |
6068 | goto cleanup; | |
6069 | } | |
6de9cd9a | 6070 | |
7114edca | 6071 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
1902704e PT |
6072 | { |
6073 | m = MATCH_ERROR; | |
6074 | goto cleanup; | |
6075 | } | |
6076 | ||
6de9cd9a DN |
6077 | if ((current_attr.external || current_attr.intrinsic) |
6078 | && sym->attr.flavor != FL_PROCEDURE | |
231b2fcc | 6079 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6080 | { |
6081 | m = MATCH_ERROR; | |
6082 | goto cleanup; | |
6083 | } | |
6084 | ||
3070bab4 JW |
6085 | add_hidden_procptr_result (sym); |
6086 | ||
6de9cd9a DN |
6087 | return MATCH_YES; |
6088 | ||
6089 | cleanup: | |
6090 | gfc_free_array_spec (as); | |
6091 | return m; | |
6092 | } | |
6093 | ||
6094 | ||
6095 | /* Generic attribute declaration subroutine. Used for attributes that | |
6096 | just have a list of names. */ | |
6097 | ||
6098 | static match | |
6099 | attr_decl (void) | |
6100 | { | |
6101 | match m; | |
6102 | ||
6103 | /* Gobble the optional double colon, by simply ignoring the result | |
6104 | of gfc_match(). */ | |
6105 | gfc_match (" ::"); | |
6106 | ||
6107 | for (;;) | |
6108 | { | |
6109 | m = attr_decl1 (); | |
6110 | if (m != MATCH_YES) | |
6111 | break; | |
6112 | ||
6113 | if (gfc_match_eos () == MATCH_YES) | |
6114 | { | |
6115 | m = MATCH_YES; | |
6116 | break; | |
6117 | } | |
6118 | ||
6119 | if (gfc_match_char (',') != MATCH_YES) | |
6120 | { | |
6121 | gfc_error ("Unexpected character in variable list at %C"); | |
6122 | m = MATCH_ERROR; | |
6123 | break; | |
6124 | } | |
6125 | } | |
6126 | ||
6127 | return m; | |
6128 | } | |
6129 | ||
6130 | ||
83d890b9 AL |
6131 | /* This routine matches Cray Pointer declarations of the form: |
6132 | pointer ( <pointer>, <pointee> ) | |
6133 | or | |
d51347f9 TB |
6134 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6135 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6136 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6137 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6138 | the pointee. For the statement |
83d890b9 AL |
6139 | pointer (ipt, ar(10)) |
6140 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6141 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6142 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6143 | |
6144 | static match | |
6145 | cray_pointer_decl (void) | |
6146 | { | |
6147 | match m; | |
be59db2d | 6148 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6149 | gfc_symbol *cptr; /* Pointer symbol. */ |
6150 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6151 | locus var_locus; | |
6152 | bool done = false; | |
6153 | ||
6154 | while (!done) | |
6155 | { | |
6156 | if (gfc_match_char ('(') != MATCH_YES) | |
6157 | { | |
6158 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 6159 | return MATCH_ERROR; |
83d890b9 | 6160 | } |
d51347f9 | 6161 | |
83d890b9 AL |
6162 | /* Match pointer. */ |
6163 | var_locus = gfc_current_locus; | |
6164 | gfc_clear_attr (¤t_attr); | |
6165 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6166 | current_ts.type = BT_INTEGER; | |
6167 | current_ts.kind = gfc_index_integer_kind; | |
6168 | ||
d51347f9 | 6169 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6170 | if (m != MATCH_YES) |
6171 | { | |
6172 | gfc_error ("Expected variable name at %C"); | |
6173 | return m; | |
6174 | } | |
d51347f9 | 6175 | |
83d890b9 AL |
6176 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
6177 | return MATCH_ERROR; | |
6178 | ||
d51347f9 | 6179 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6180 | |
6181 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6182 | { | |
6183 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6184 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6185 | } |
6186 | else if (cptr->ts.type != BT_INTEGER) | |
6187 | { | |
e25a0da3 | 6188 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6189 | return MATCH_ERROR; |
6190 | } | |
6191 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6192 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 6193 | " memory addresses require %d bytes", |
636dff67 | 6194 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6195 | |
6196 | if (gfc_match_char (',') != MATCH_YES) | |
6197 | { | |
6198 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6199 | return MATCH_ERROR; |
83d890b9 AL |
6200 | } |
6201 | ||
d51347f9 | 6202 | /* Match Pointee. */ |
83d890b9 AL |
6203 | var_locus = gfc_current_locus; |
6204 | gfc_clear_attr (¤t_attr); | |
6205 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6206 | current_ts.type = BT_UNKNOWN; | |
6207 | current_ts.kind = 0; | |
6208 | ||
6209 | m = gfc_match_symbol (&cpte, 0); | |
6210 | if (m != MATCH_YES) | |
6211 | { | |
6212 | gfc_error ("Expected variable name at %C"); | |
6213 | return m; | |
6214 | } | |
d51347f9 | 6215 | |
83d890b9 | 6216 | /* Check for an optional array spec. */ |
be59db2d | 6217 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6218 | if (m == MATCH_ERROR) |
6219 | { | |
6220 | gfc_free_array_spec (as); | |
6221 | return m; | |
6222 | } | |
6223 | else if (m == MATCH_NO) | |
6224 | { | |
6225 | gfc_free_array_spec (as); | |
6226 | as = NULL; | |
6227 | } | |
6228 | ||
6229 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
6230 | return MATCH_ERROR; | |
6231 | ||
6232 | gfc_set_sym_referenced (cpte); | |
6233 | ||
6234 | if (cpte->as == NULL) | |
6235 | { | |
6236 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
6237 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
6238 | } | |
6239 | else if (as != NULL) | |
6240 | { | |
e25a0da3 | 6241 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6242 | gfc_free_array_spec (as); |
6243 | return MATCH_ERROR; | |
6244 | } | |
6245 | ||
6246 | as = NULL; | |
6247 | ||
6248 | if (cpte->as != NULL) | |
6249 | { | |
6250 | /* Fix array spec. */ | |
6251 | m = gfc_mod_pointee_as (cpte->as); | |
6252 | if (m == MATCH_ERROR) | |
6253 | return m; | |
6254 | } | |
6255 | ||
6256 | /* Point the Pointee at the Pointer. */ | |
b122dc6a | 6257 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6258 | |
6259 | if (gfc_match_char (')') != MATCH_YES) | |
6260 | { | |
6261 | gfc_error ("Expected \")\" at %C"); | |
6262 | return MATCH_ERROR; | |
6263 | } | |
6264 | m = gfc_match_char (','); | |
6265 | if (m != MATCH_YES) | |
6266 | done = true; /* Stop searching for more declarations. */ | |
6267 | ||
6268 | } | |
6269 | ||
6270 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
6271 | || gfc_match_eos () != MATCH_YES) | |
6272 | { | |
6273 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6274 | return MATCH_ERROR; | |
6275 | } | |
6276 | return MATCH_YES; | |
6277 | } | |
6278 | ||
6279 | ||
6de9cd9a DN |
6280 | match |
6281 | gfc_match_external (void) | |
6282 | { | |
6283 | ||
6284 | gfc_clear_attr (¤t_attr); | |
1902704e | 6285 | current_attr.external = 1; |
6de9cd9a DN |
6286 | |
6287 | return attr_decl (); | |
6288 | } | |
6289 | ||
6290 | ||
6de9cd9a DN |
6291 | match |
6292 | gfc_match_intent (void) | |
6293 | { | |
6294 | sym_intent intent; | |
6295 | ||
9abe5e56 DK |
6296 | /* This is not allowed within a BLOCK construct! */ |
6297 | if (gfc_current_state () == COMP_BLOCK) | |
6298 | { | |
6299 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6300 | return MATCH_ERROR; | |
6301 | } | |
6302 | ||
6de9cd9a DN |
6303 | intent = match_intent_spec (); |
6304 | if (intent == INTENT_UNKNOWN) | |
6305 | return MATCH_ERROR; | |
6306 | ||
6307 | gfc_clear_attr (¤t_attr); | |
1902704e | 6308 | current_attr.intent = intent; |
6de9cd9a DN |
6309 | |
6310 | return attr_decl (); | |
6311 | } | |
6312 | ||
6313 | ||
6314 | match | |
6315 | gfc_match_intrinsic (void) | |
6316 | { | |
6317 | ||
6318 | gfc_clear_attr (¤t_attr); | |
1902704e | 6319 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6320 | |
6321 | return attr_decl (); | |
6322 | } | |
6323 | ||
6324 | ||
6325 | match | |
6326 | gfc_match_optional (void) | |
6327 | { | |
9abe5e56 DK |
6328 | /* This is not allowed within a BLOCK construct! */ |
6329 | if (gfc_current_state () == COMP_BLOCK) | |
6330 | { | |
6331 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6332 | return MATCH_ERROR; | |
6333 | } | |
6de9cd9a DN |
6334 | |
6335 | gfc_clear_attr (¤t_attr); | |
1902704e | 6336 | current_attr.optional = 1; |
6de9cd9a DN |
6337 | |
6338 | return attr_decl (); | |
6339 | } | |
6340 | ||
6341 | ||
6342 | match | |
6343 | gfc_match_pointer (void) | |
6344 | { | |
83d890b9 | 6345 | gfc_gobble_whitespace (); |
8fc541d3 | 6346 | if (gfc_peek_ascii_char () == '(') |
83d890b9 AL |
6347 | { |
6348 | if (!gfc_option.flag_cray_pointer) | |
6349 | { | |
636dff67 SK |
6350 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6351 | "flag"); | |
83d890b9 AL |
6352 | return MATCH_ERROR; |
6353 | } | |
6354 | return cray_pointer_decl (); | |
6355 | } | |
6356 | else | |
6357 | { | |
6358 | gfc_clear_attr (¤t_attr); | |
1902704e | 6359 | current_attr.pointer = 1; |
83d890b9 AL |
6360 | |
6361 | return attr_decl (); | |
6362 | } | |
6de9cd9a DN |
6363 | } |
6364 | ||
6365 | ||
6366 | match | |
6367 | gfc_match_allocatable (void) | |
6368 | { | |
6de9cd9a | 6369 | gfc_clear_attr (¤t_attr); |
1902704e | 6370 | current_attr.allocatable = 1; |
6de9cd9a DN |
6371 | |
6372 | return attr_decl (); | |
6373 | } | |
6374 | ||
6375 | ||
be59db2d TB |
6376 | match |
6377 | gfc_match_codimension (void) | |
6378 | { | |
6379 | gfc_clear_attr (¤t_attr); | |
6380 | current_attr.codimension = 1; | |
6381 | ||
6382 | return attr_decl (); | |
6383 | } | |
6384 | ||
6385 | ||
fe4e525c TB |
6386 | match |
6387 | gfc_match_contiguous (void) | |
6388 | { | |
6389 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: CONTIGUOUS statement at %C") | |
6390 | == FAILURE) | |
6391 | return MATCH_ERROR; | |
6392 | ||
6393 | gfc_clear_attr (¤t_attr); | |
6394 | current_attr.contiguous = 1; | |
6395 | ||
6396 | return attr_decl (); | |
6397 | } | |
6398 | ||
6399 | ||
6de9cd9a DN |
6400 | match |
6401 | gfc_match_dimension (void) | |
6402 | { | |
6de9cd9a | 6403 | gfc_clear_attr (¤t_attr); |
1902704e | 6404 | current_attr.dimension = 1; |
6de9cd9a DN |
6405 | |
6406 | return attr_decl (); | |
6407 | } | |
6408 | ||
6409 | ||
6410 | match | |
6411 | gfc_match_target (void) | |
6412 | { | |
6de9cd9a | 6413 | gfc_clear_attr (¤t_attr); |
1902704e | 6414 | current_attr.target = 1; |
6de9cd9a DN |
6415 | |
6416 | return attr_decl (); | |
6417 | } | |
6418 | ||
6419 | ||
6420 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6421 | statement. */ | |
6422 | ||
6423 | static match | |
6424 | access_attr_decl (gfc_statement st) | |
6425 | { | |
6426 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6427 | interface_type type; | |
6428 | gfc_user_op *uop; | |
6429 | gfc_symbol *sym; | |
a1ee985f | 6430 | gfc_intrinsic_op op; |
6de9cd9a DN |
6431 | match m; |
6432 | ||
6433 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6434 | goto done; | |
6435 | ||
6436 | for (;;) | |
6437 | { | |
a1ee985f | 6438 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
6439 | if (m == MATCH_NO) |
6440 | goto syntax; | |
6441 | if (m == MATCH_ERROR) | |
6442 | return MATCH_ERROR; | |
6443 | ||
6444 | switch (type) | |
6445 | { | |
6446 | case INTERFACE_NAMELESS: | |
9e1d712c | 6447 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
6448 | goto syntax; |
6449 | ||
6450 | case INTERFACE_GENERIC: | |
6451 | if (gfc_get_symbol (name, NULL, &sym)) | |
6452 | goto done; | |
6453 | ||
636dff67 SK |
6454 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
6455 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
231b2fcc | 6456 | sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6457 | return MATCH_ERROR; |
6458 | ||
6459 | break; | |
6460 | ||
6461 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 6462 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 6463 | { |
a1ee985f | 6464 | gfc_current_ns->operator_access[op] = |
6de9cd9a DN |
6465 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
6466 | } | |
6467 | else | |
6468 | { | |
6469 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 6470 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
6471 | goto done; |
6472 | } | |
6473 | ||
6474 | break; | |
6475 | ||
6476 | case INTERFACE_USER_OP: | |
6477 | uop = gfc_get_uop (name); | |
6478 | ||
6479 | if (uop->access == ACCESS_UNKNOWN) | |
6480 | { | |
636dff67 SK |
6481 | uop->access = (st == ST_PUBLIC) |
6482 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
6483 | } |
6484 | else | |
6485 | { | |
636dff67 SK |
6486 | gfc_error ("Access specification of the .%s. operator at %C " |
6487 | "has already been specified", sym->name); | |
6de9cd9a DN |
6488 | goto done; |
6489 | } | |
6490 | ||
6491 | break; | |
6492 | } | |
6493 | ||
6494 | if (gfc_match_char (',') == MATCH_NO) | |
6495 | break; | |
6496 | } | |
6497 | ||
6498 | if (gfc_match_eos () != MATCH_YES) | |
6499 | goto syntax; | |
6500 | return MATCH_YES; | |
6501 | ||
6502 | syntax: | |
6503 | gfc_syntax_error (st); | |
6504 | ||
6505 | done: | |
6506 | return MATCH_ERROR; | |
6507 | } | |
6508 | ||
6509 | ||
ee7e677f TB |
6510 | match |
6511 | gfc_match_protected (void) | |
6512 | { | |
6513 | gfc_symbol *sym; | |
6514 | match m; | |
6515 | ||
6516 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6517 | { | |
6518 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6519 | "part of a module"); | |
6520 | return MATCH_ERROR; | |
6521 | ||
6522 | } | |
6523 | ||
636dff67 | 6524 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED statement at %C") |
ee7e677f TB |
6525 | == FAILURE) |
6526 | return MATCH_ERROR; | |
6527 | ||
6528 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6529 | { | |
6530 | return MATCH_ERROR; | |
6531 | } | |
6532 | ||
6533 | if (gfc_match_eos () == MATCH_YES) | |
6534 | goto syntax; | |
6535 | ||
6536 | for(;;) | |
6537 | { | |
6538 | m = gfc_match_symbol (&sym, 0); | |
6539 | switch (m) | |
6540 | { | |
6541 | case MATCH_YES: | |
636dff67 SK |
6542 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
6543 | == FAILURE) | |
ee7e677f TB |
6544 | return MATCH_ERROR; |
6545 | goto next_item; | |
6546 | ||
6547 | case MATCH_NO: | |
6548 | break; | |
6549 | ||
6550 | case MATCH_ERROR: | |
6551 | return MATCH_ERROR; | |
6552 | } | |
6553 | ||
6554 | next_item: | |
6555 | if (gfc_match_eos () == MATCH_YES) | |
6556 | break; | |
6557 | if (gfc_match_char (',') != MATCH_YES) | |
6558 | goto syntax; | |
6559 | } | |
6560 | ||
6561 | return MATCH_YES; | |
6562 | ||
6563 | syntax: | |
6564 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6565 | return MATCH_ERROR; | |
6566 | } | |
6567 | ||
6568 | ||
86bf520d | 6569 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 6570 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
6571 | type declaration or a module. */ |
6572 | ||
6573 | match | |
636dff67 | 6574 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
6575 | { |
6576 | ||
6577 | if (gfc_match ("private") != MATCH_YES) | |
6578 | return MATCH_NO; | |
6579 | ||
d51347f9 | 6580 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
6581 | && !(gfc_current_state () == COMP_DERIVED |
6582 | && gfc_state_stack->previous | |
6583 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6584 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6585 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6586 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
6587 | { |
6588 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6589 | "specification part of a module"); | |
6590 | return MATCH_ERROR; | |
6591 | } | |
6592 | ||
6de9cd9a DN |
6593 | if (gfc_current_state () == COMP_DERIVED) |
6594 | { | |
6595 | if (gfc_match_eos () == MATCH_YES) | |
6596 | { | |
6597 | *st = ST_PRIVATE; | |
6598 | return MATCH_YES; | |
6599 | } | |
6600 | ||
6601 | gfc_syntax_error (ST_PRIVATE); | |
6602 | return MATCH_ERROR; | |
6603 | } | |
6604 | ||
6605 | if (gfc_match_eos () == MATCH_YES) | |
6606 | { | |
6607 | *st = ST_PRIVATE; | |
6608 | return MATCH_YES; | |
6609 | } | |
6610 | ||
6611 | *st = ST_ATTR_DECL; | |
6612 | return access_attr_decl (ST_PRIVATE); | |
6613 | } | |
6614 | ||
6615 | ||
6616 | match | |
636dff67 | 6617 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
6618 | { |
6619 | ||
6620 | if (gfc_match ("public") != MATCH_YES) | |
6621 | return MATCH_NO; | |
6622 | ||
d51347f9 TB |
6623 | if (gfc_current_state () != COMP_MODULE) |
6624 | { | |
6625 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6626 | "specification part of a module"); | |
6627 | return MATCH_ERROR; | |
6628 | } | |
6629 | ||
6de9cd9a DN |
6630 | if (gfc_match_eos () == MATCH_YES) |
6631 | { | |
6632 | *st = ST_PUBLIC; | |
6633 | return MATCH_YES; | |
6634 | } | |
6635 | ||
6636 | *st = ST_ATTR_DECL; | |
6637 | return access_attr_decl (ST_PUBLIC); | |
6638 | } | |
6639 | ||
6640 | ||
6641 | /* Workhorse for gfc_match_parameter. */ | |
6642 | ||
6643 | static match | |
6644 | do_parm (void) | |
6645 | { | |
6646 | gfc_symbol *sym; | |
6647 | gfc_expr *init; | |
6648 | match m; | |
7919373d | 6649 | gfc_try t; |
6de9cd9a DN |
6650 | |
6651 | m = gfc_match_symbol (&sym, 0); | |
6652 | if (m == MATCH_NO) | |
6653 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6654 | ||
6655 | if (m != MATCH_YES) | |
6656 | return m; | |
6657 | ||
6658 | if (gfc_match_char ('=') == MATCH_NO) | |
6659 | { | |
6660 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6661 | return MATCH_ERROR; | |
6662 | } | |
6663 | ||
6664 | m = gfc_match_init_expr (&init); | |
6665 | if (m == MATCH_NO) | |
6666 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6667 | if (m != MATCH_YES) | |
6668 | return m; | |
6669 | ||
6670 | if (sym->ts.type == BT_UNKNOWN | |
6671 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
6672 | { | |
6673 | m = MATCH_ERROR; | |
6674 | goto cleanup; | |
6675 | } | |
6676 | ||
6677 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
231b2fcc | 6678 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6679 | { |
6680 | m = MATCH_ERROR; | |
6681 | goto cleanup; | |
6682 | } | |
6683 | ||
1283ab12 TB |
6684 | if (sym->value) |
6685 | { | |
6686 | gfc_error ("Initializing already initialized variable at %C"); | |
6687 | m = MATCH_ERROR; | |
6688 | goto cleanup; | |
6689 | } | |
6690 | ||
7919373d TB |
6691 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
6692 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
6de9cd9a DN |
6693 | |
6694 | cleanup: | |
6695 | gfc_free_expr (init); | |
6696 | return m; | |
6697 | } | |
6698 | ||
6699 | ||
6700 | /* Match a parameter statement, with the weird syntax that these have. */ | |
6701 | ||
6702 | match | |
6703 | gfc_match_parameter (void) | |
6704 | { | |
6705 | match m; | |
6706 | ||
6707 | if (gfc_match_char ('(') == MATCH_NO) | |
6708 | return MATCH_NO; | |
6709 | ||
6710 | for (;;) | |
6711 | { | |
6712 | m = do_parm (); | |
6713 | if (m != MATCH_YES) | |
6714 | break; | |
6715 | ||
6716 | if (gfc_match (" )%t") == MATCH_YES) | |
6717 | break; | |
6718 | ||
6719 | if (gfc_match_char (',') != MATCH_YES) | |
6720 | { | |
6721 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
6722 | m = MATCH_ERROR; | |
6723 | break; | |
6724 | } | |
6725 | } | |
6726 | ||
6727 | return m; | |
6728 | } | |
6729 | ||
6730 | ||
6731 | /* Save statements have a special syntax. */ | |
6732 | ||
6733 | match | |
6734 | gfc_match_save (void) | |
6735 | { | |
9056bd70 TS |
6736 | char n[GFC_MAX_SYMBOL_LEN+1]; |
6737 | gfc_common_head *c; | |
6de9cd9a DN |
6738 | gfc_symbol *sym; |
6739 | match m; | |
6740 | ||
6741 | if (gfc_match_eos () == MATCH_YES) | |
6742 | { | |
6743 | if (gfc_current_ns->seen_save) | |
6744 | { | |
636dff67 SK |
6745 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
6746 | "follows previous SAVE statement") | |
09e87839 AL |
6747 | == FAILURE) |
6748 | return MATCH_ERROR; | |
6de9cd9a DN |
6749 | } |
6750 | ||
6751 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
6752 | return MATCH_YES; | |
6753 | } | |
6754 | ||
6755 | if (gfc_current_ns->save_all) | |
6756 | { | |
636dff67 SK |
6757 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
6758 | "blanket SAVE statement") | |
09e87839 AL |
6759 | == FAILURE) |
6760 | return MATCH_ERROR; | |
6de9cd9a DN |
6761 | } |
6762 | ||
6763 | gfc_match (" ::"); | |
6764 | ||
6765 | for (;;) | |
6766 | { | |
6767 | m = gfc_match_symbol (&sym, 0); | |
6768 | switch (m) | |
6769 | { | |
6770 | case MATCH_YES: | |
80f95228 JW |
6771 | if (gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
6772 | &gfc_current_locus) == FAILURE) | |
6de9cd9a DN |
6773 | return MATCH_ERROR; |
6774 | goto next_item; | |
6775 | ||
6776 | case MATCH_NO: | |
6777 | break; | |
6778 | ||
6779 | case MATCH_ERROR: | |
6780 | return MATCH_ERROR; | |
6781 | } | |
6782 | ||
9056bd70 | 6783 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
6784 | if (m == MATCH_ERROR) |
6785 | return MATCH_ERROR; | |
6786 | if (m == MATCH_NO) | |
6787 | goto syntax; | |
6788 | ||
53814b8f | 6789 | c = gfc_get_common (n, 0); |
9056bd70 TS |
6790 | c->saved = 1; |
6791 | ||
6de9cd9a DN |
6792 | gfc_current_ns->seen_save = 1; |
6793 | ||
6794 | next_item: | |
6795 | if (gfc_match_eos () == MATCH_YES) | |
6796 | break; | |
6797 | if (gfc_match_char (',') != MATCH_YES) | |
6798 | goto syntax; | |
6799 | } | |
6800 | ||
6801 | return MATCH_YES; | |
6802 | ||
6803 | syntax: | |
6804 | gfc_error ("Syntax error in SAVE statement at %C"); | |
6805 | return MATCH_ERROR; | |
6806 | } | |
6807 | ||
6808 | ||
06469efd PT |
6809 | match |
6810 | gfc_match_value (void) | |
6811 | { | |
6812 | gfc_symbol *sym; | |
6813 | match m; | |
6814 | ||
9abe5e56 DK |
6815 | /* This is not allowed within a BLOCK construct! */ |
6816 | if (gfc_current_state () == COMP_BLOCK) | |
6817 | { | |
6818 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
6819 | return MATCH_ERROR; | |
6820 | } | |
6821 | ||
636dff67 | 6822 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE statement at %C") |
06469efd PT |
6823 | == FAILURE) |
6824 | return MATCH_ERROR; | |
6825 | ||
6826 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6827 | { | |
6828 | return MATCH_ERROR; | |
6829 | } | |
6830 | ||
6831 | if (gfc_match_eos () == MATCH_YES) | |
6832 | goto syntax; | |
6833 | ||
6834 | for(;;) | |
6835 | { | |
6836 | m = gfc_match_symbol (&sym, 0); | |
6837 | switch (m) | |
6838 | { | |
6839 | case MATCH_YES: | |
636dff67 SK |
6840 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
6841 | == FAILURE) | |
06469efd PT |
6842 | return MATCH_ERROR; |
6843 | goto next_item; | |
6844 | ||
6845 | case MATCH_NO: | |
6846 | break; | |
6847 | ||
6848 | case MATCH_ERROR: | |
6849 | return MATCH_ERROR; | |
6850 | } | |
6851 | ||
6852 | next_item: | |
6853 | if (gfc_match_eos () == MATCH_YES) | |
6854 | break; | |
6855 | if (gfc_match_char (',') != MATCH_YES) | |
6856 | goto syntax; | |
6857 | } | |
6858 | ||
6859 | return MATCH_YES; | |
6860 | ||
6861 | syntax: | |
6862 | gfc_error ("Syntax error in VALUE statement at %C"); | |
6863 | return MATCH_ERROR; | |
6864 | } | |
6865 | ||
66e4ab31 | 6866 | |
775e6c3a TB |
6867 | match |
6868 | gfc_match_volatile (void) | |
6869 | { | |
6870 | gfc_symbol *sym; | |
6871 | match m; | |
6872 | ||
636dff67 | 6873 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VOLATILE statement at %C") |
775e6c3a TB |
6874 | == FAILURE) |
6875 | return MATCH_ERROR; | |
6876 | ||
6877 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6878 | { | |
6879 | return MATCH_ERROR; | |
6880 | } | |
6881 | ||
6882 | if (gfc_match_eos () == MATCH_YES) | |
6883 | goto syntax; | |
6884 | ||
6885 | for(;;) | |
6886 | { | |
9bce3c1c | 6887 | /* VOLATILE is special because it can be added to host-associated |
be59db2d | 6888 | symbols locally. Except for coarrays. */ |
9bce3c1c | 6889 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
6890 | switch (m) |
6891 | { | |
6892 | case MATCH_YES: | |
be59db2d TB |
6893 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
6894 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
6895 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
6896 | { | |
6897 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
6898 | "%C, which is use-/host-associated", sym->name); | |
6899 | return MATCH_ERROR; | |
6900 | } | |
636dff67 SK |
6901 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
6902 | == FAILURE) | |
775e6c3a TB |
6903 | return MATCH_ERROR; |
6904 | goto next_item; | |
6905 | ||
6906 | case MATCH_NO: | |
6907 | break; | |
6908 | ||
6909 | case MATCH_ERROR: | |
6910 | return MATCH_ERROR; | |
6911 | } | |
6912 | ||
6913 | next_item: | |
6914 | if (gfc_match_eos () == MATCH_YES) | |
6915 | break; | |
6916 | if (gfc_match_char (',') != MATCH_YES) | |
6917 | goto syntax; | |
6918 | } | |
6919 | ||
6920 | return MATCH_YES; | |
6921 | ||
6922 | syntax: | |
6923 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
6924 | return MATCH_ERROR; | |
6925 | } | |
6926 | ||
6927 | ||
1eee5628 TB |
6928 | match |
6929 | gfc_match_asynchronous (void) | |
6930 | { | |
6931 | gfc_symbol *sym; | |
6932 | match m; | |
6933 | ||
6934 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ASYNCHRONOUS statement at %C") | |
6935 | == FAILURE) | |
6936 | return MATCH_ERROR; | |
6937 | ||
6938 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6939 | { | |
6940 | return MATCH_ERROR; | |
6941 | } | |
6942 | ||
6943 | if (gfc_match_eos () == MATCH_YES) | |
6944 | goto syntax; | |
6945 | ||
6946 | for(;;) | |
6947 | { | |
6948 | /* ASYNCHRONOUS is special because it can be added to host-associated | |
6949 | symbols locally. */ | |
6950 | m = gfc_match_symbol (&sym, 1); | |
6951 | switch (m) | |
6952 | { | |
6953 | case MATCH_YES: | |
6954 | if (gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus) | |
6955 | == FAILURE) | |
6956 | return MATCH_ERROR; | |
6957 | goto next_item; | |
6958 | ||
6959 | case MATCH_NO: | |
6960 | break; | |
6961 | ||
6962 | case MATCH_ERROR: | |
6963 | return MATCH_ERROR; | |
6964 | } | |
6965 | ||
6966 | next_item: | |
6967 | if (gfc_match_eos () == MATCH_YES) | |
6968 | break; | |
6969 | if (gfc_match_char (',') != MATCH_YES) | |
6970 | goto syntax; | |
6971 | } | |
6972 | ||
6973 | return MATCH_YES; | |
6974 | ||
6975 | syntax: | |
6976 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
6977 | return MATCH_ERROR; | |
6978 | } | |
6979 | ||
6980 | ||
6de9cd9a DN |
6981 | /* Match a module procedure statement. Note that we have to modify |
6982 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 6983 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
6984 | |
6985 | match | |
6986 | gfc_match_modproc (void) | |
6987 | { | |
6988 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6989 | gfc_symbol *sym; | |
6990 | match m; | |
060fca4a | 6991 | gfc_namespace *module_ns; |
2b77e908 | 6992 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
6993 | |
6994 | if (gfc_state_stack->state != COMP_INTERFACE | |
6995 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
6996 | || current_interface.type == INTERFACE_NAMELESS |
6997 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 6998 | { |
636dff67 SK |
6999 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7000 | "interface"); | |
6de9cd9a DN |
7001 | return MATCH_ERROR; |
7002 | } | |
7003 | ||
060fca4a PT |
7004 | module_ns = gfc_current_ns->parent; |
7005 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7006 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7007 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7008 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7009 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7010 | break; |
7011 | ||
7012 | if (module_ns == NULL) | |
7013 | return MATCH_ERROR; | |
7014 | ||
2b77e908 FXC |
7015 | /* Store the current state of the interface. We will need it if we |
7016 | end up with a syntax error and need to recover. */ | |
7017 | old_interface_head = gfc_current_interface_head (); | |
7018 | ||
6de9cd9a DN |
7019 | for (;;) |
7020 | { | |
43dfd40c | 7021 | locus old_locus = gfc_current_locus; |
2b77e908 FXC |
7022 | bool last = false; |
7023 | ||
6de9cd9a DN |
7024 | m = gfc_match_name (name); |
7025 | if (m == MATCH_NO) | |
7026 | goto syntax; | |
7027 | if (m != MATCH_YES) | |
7028 | return MATCH_ERROR; | |
7029 | ||
2b77e908 FXC |
7030 | /* Check for syntax error before starting to add symbols to the |
7031 | current namespace. */ | |
7032 | if (gfc_match_eos () == MATCH_YES) | |
7033 | last = true; | |
7034 | if (!last && gfc_match_char (',') != MATCH_YES) | |
7035 | goto syntax; | |
7036 | ||
7037 | /* Now we're sure the syntax is valid, we process this item | |
7038 | further. */ | |
060fca4a | 7039 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7040 | return MATCH_ERROR; |
7041 | ||
43dfd40c SK |
7042 | if (sym->attr.intrinsic) |
7043 | { | |
7044 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7045 | "PROCEDURE", &old_locus); | |
7046 | return MATCH_ERROR; | |
7047 | } | |
7048 | ||
6de9cd9a | 7049 | if (sym->attr.proc != PROC_MODULE |
231b2fcc TS |
7050 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
7051 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
7052 | return MATCH_ERROR; |
7053 | ||
7054 | if (gfc_add_interface (sym) == FAILURE) | |
7055 | return MATCH_ERROR; | |
7056 | ||
71f77fd7 | 7057 | sym->attr.mod_proc = 1; |
43dfd40c | 7058 | sym->declared_at = old_locus; |
71f77fd7 | 7059 | |
2b77e908 | 7060 | if (last) |
6de9cd9a | 7061 | break; |
6de9cd9a DN |
7062 | } |
7063 | ||
7064 | return MATCH_YES; | |
7065 | ||
7066 | syntax: | |
2b77e908 FXC |
7067 | /* Restore the previous state of the interface. */ |
7068 | interface = gfc_current_interface_head (); | |
7069 | gfc_set_current_interface_head (old_interface_head); | |
7070 | ||
7071 | /* Free the new interfaces. */ | |
7072 | while (interface != old_interface_head) | |
7073 | { | |
7074 | gfc_interface *i = interface->next; | |
7075 | gfc_free (interface); | |
7076 | interface = i; | |
7077 | } | |
7078 | ||
7079 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7080 | gfc_syntax_error (ST_MODULE_PROC); |
7081 | return MATCH_ERROR; | |
7082 | } | |
7083 | ||
7084 | ||
7d1f1e61 PT |
7085 | /* Check a derived type that is being extended. */ |
7086 | static gfc_symbol* | |
7087 | check_extended_derived_type (char *name) | |
7088 | { | |
7089 | gfc_symbol *extended; | |
7090 | ||
7091 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7092 | { | |
7093 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7094 | return NULL; | |
7095 | } | |
7096 | ||
7097 | if (!extended) | |
7098 | { | |
7099 | gfc_error ("No such symbol in TYPE definition at %C"); | |
7100 | return NULL; | |
7101 | } | |
7102 | ||
7103 | if (extended->attr.flavor != FL_DERIVED) | |
7104 | { | |
7105 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7106 | "derived type", name); | |
7107 | return NULL; | |
7108 | } | |
7109 | ||
7110 | if (extended->attr.is_bind_c) | |
7111 | { | |
7112 | gfc_error ("'%s' cannot be extended at %C because it " | |
7113 | "is BIND(C)", extended->name); | |
7114 | return NULL; | |
7115 | } | |
7116 | ||
7117 | if (extended->attr.sequence) | |
7118 | { | |
7119 | gfc_error ("'%s' cannot be extended at %C because it " | |
7120 | "is a SEQUENCE type", extended->name); | |
7121 | return NULL; | |
7122 | } | |
7123 | ||
7124 | return extended; | |
7125 | } | |
7126 | ||
7127 | ||
a8b3b0b6 CR |
7128 | /* Match the optional attribute specifiers for a type declaration. |
7129 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7130 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7131 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7132 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7133 | |
7134 | match | |
7d1f1e61 | 7135 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7136 | { |
a8b3b0b6 | 7137 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7138 | if (gfc_match (" , private") == MATCH_YES) |
7139 | { | |
d51347f9 | 7140 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7141 | { |
d51347f9 TB |
7142 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7143 | "specification part of a module"); | |
6de9cd9a DN |
7144 | return MATCH_ERROR; |
7145 | } | |
7146 | ||
a8b3b0b6 | 7147 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
6de9cd9a | 7148 | return MATCH_ERROR; |
6de9cd9a | 7149 | } |
a8b3b0b6 | 7150 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7151 | { |
d51347f9 | 7152 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7153 | { |
d51347f9 TB |
7154 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7155 | "specification part of a module"); | |
6de9cd9a DN |
7156 | return MATCH_ERROR; |
7157 | } | |
7158 | ||
a8b3b0b6 | 7159 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
6de9cd9a | 7160 | return MATCH_ERROR; |
6de9cd9a | 7161 | } |
52f49934 | 7162 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7163 | { |
7164 | /* If the type is defined to be bind(c) it then needs to make | |
7165 | sure that all fields are interoperable. This will | |
7166 | need to be a semantic check on the finished derived type. | |
7167 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
7168 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
7169 | return MATCH_ERROR; | |
7170 | ||
7171 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7172 | } | |
52f49934 DK |
7173 | else if (gfc_match (" , abstract") == MATCH_YES) |
7174 | { | |
7175 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ABSTRACT type at %C") | |
7176 | == FAILURE) | |
7177 | return MATCH_ERROR; | |
7178 | ||
7179 | if (gfc_add_abstract (attr, &gfc_current_locus) == FAILURE) | |
7180 | return MATCH_ERROR; | |
7181 | } | |
7d1f1e61 PT |
7182 | else if (name && gfc_match(" , extends ( %n )", name) == MATCH_YES) |
7183 | { | |
63a3341a | 7184 | if (gfc_add_extension (attr, &gfc_current_locus) == FAILURE) |
7d1f1e61 PT |
7185 | return MATCH_ERROR; |
7186 | } | |
a8b3b0b6 CR |
7187 | else |
7188 | return MATCH_NO; | |
7189 | ||
7190 | /* If we get here, something matched. */ | |
7191 | return MATCH_YES; | |
7192 | } | |
7193 | ||
7194 | ||
7195 | /* Match the beginning of a derived type declaration. If a type name | |
7196 | was the result of a function, then it is possible to have a symbol | |
7197 | already to be known as a derived type yet have no components. */ | |
7198 | ||
7199 | match | |
7200 | gfc_match_derived_decl (void) | |
7201 | { | |
7202 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7203 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 CR |
7204 | symbol_attribute attr; |
7205 | gfc_symbol *sym; | |
7d1f1e61 | 7206 | gfc_symbol *extended; |
a8b3b0b6 CR |
7207 | match m; |
7208 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7209 | bool seen_attr = false; |
a8b3b0b6 CR |
7210 | |
7211 | if (gfc_current_state () == COMP_DERIVED) | |
7212 | return MATCH_NO; | |
7213 | ||
7d1f1e61 PT |
7214 | name[0] = '\0'; |
7215 | parent[0] = '\0'; | |
a8b3b0b6 | 7216 | gfc_clear_attr (&attr); |
7d1f1e61 | 7217 | extended = NULL; |
a8b3b0b6 CR |
7218 | |
7219 | do | |
7220 | { | |
7d1f1e61 | 7221 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7222 | if (is_type_attr_spec == MATCH_ERROR) |
7223 | return MATCH_ERROR; | |
e7303e85 FXC |
7224 | if (is_type_attr_spec == MATCH_YES) |
7225 | seen_attr = true; | |
a8b3b0b6 | 7226 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7227 | |
63a3341a PT |
7228 | /* Deal with derived type extensions. The extension attribute has |
7229 | been added to 'attr' but now the parent type must be found and | |
7230 | checked. */ | |
7d1f1e61 PT |
7231 | if (parent[0]) |
7232 | extended = check_extended_derived_type (parent); | |
7233 | ||
7234 | if (parent[0] && !extended) | |
7235 | return MATCH_ERROR; | |
7236 | ||
e7303e85 | 7237 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7238 | { |
7239 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7240 | return MATCH_ERROR; | |
7241 | } | |
7242 | ||
7243 | m = gfc_match (" %n%t", name); | |
7244 | if (m != MATCH_YES) | |
7245 | return m; | |
7246 | ||
e9c06563 TB |
7247 | /* Make sure the name is not the name of an intrinsic type. */ |
7248 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7249 | { |
636dff67 SK |
7250 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7251 | "type", name); | |
6de9cd9a DN |
7252 | return MATCH_ERROR; |
7253 | } | |
7254 | ||
7255 | if (gfc_get_symbol (name, NULL, &sym)) | |
7256 | return MATCH_ERROR; | |
7257 | ||
7258 | if (sym->ts.type != BT_UNKNOWN) | |
7259 | { | |
7260 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
7261 | "of %s", sym->name, gfc_typename (&sym->ts)); | |
7262 | return MATCH_ERROR; | |
7263 | } | |
7264 | ||
7265 | /* The symbol may already have the derived attribute without the | |
7266 | components. The ways this can happen is via a function | |
7267 | definition, an INTRINSIC statement or a subtype in another | |
7268 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 7269 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 7270 | if (sym->attr.flavor != FL_DERIVED |
231b2fcc | 7271 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
7272 | return MATCH_ERROR; |
7273 | ||
9fa6b0af | 7274 | if (sym->components != NULL || sym->attr.zero_comp) |
6de9cd9a | 7275 | { |
636dff67 SK |
7276 | gfc_error ("Derived type definition of '%s' at %C has already been " |
7277 | "defined", sym->name); | |
6de9cd9a DN |
7278 | return MATCH_ERROR; |
7279 | } | |
7280 | ||
7281 | if (attr.access != ACCESS_UNKNOWN | |
231b2fcc | 7282 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
7283 | return MATCH_ERROR; |
7284 | ||
a8b3b0b6 CR |
7285 | /* See if the derived type was labeled as bind(c). */ |
7286 | if (attr.is_bind_c != 0) | |
7287 | sym->attr.is_bind_c = attr.is_bind_c; | |
7288 | ||
34523524 DK |
7289 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7290 | if (!sym->f2k_derived) | |
7291 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
7292 | |
7293 | if (extended && !sym->components) | |
7294 | { | |
7295 | gfc_component *p; | |
7296 | gfc_symtree *st; | |
7297 | ||
7298 | /* Add the extended derived type as the first component. */ | |
7299 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
7300 | extended->refs++; |
7301 | gfc_set_sym_referenced (extended); | |
7302 | ||
7303 | p->ts.type = BT_DERIVED; | |
bc21d315 | 7304 | p->ts.u.derived = extended; |
7d1f1e61 | 7305 | p->initializer = gfc_default_initializer (&p->ts); |
7c1dab0d JW |
7306 | |
7307 | /* Set extension level. */ | |
7308 | if (extended->attr.extension == 255) | |
7309 | { | |
7310 | /* Since the extension field is 8 bit wide, we can only have | |
7311 | up to 255 extension levels. */ | |
7312 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7313 | extended->name, &extended->declared_at); | |
7314 | return MATCH_ERROR; | |
7315 | } | |
7316 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
7317 | |
7318 | /* Provide the links between the extended type and its extension. */ | |
7319 | if (!extended->f2k_derived) | |
7320 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7321 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7322 | st->n.sym = sym; | |
7323 | } | |
7324 | ||
7c1dab0d JW |
7325 | if (!sym->hash_value) |
7326 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 7327 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 7328 | |
52f49934 DK |
7329 | /* Take over the ABSTRACT attribute. */ |
7330 | sym->attr.abstract = attr.abstract; | |
7331 | ||
6de9cd9a DN |
7332 | gfc_new_block = sym; |
7333 | ||
7334 | return MATCH_YES; | |
7335 | } | |
83d890b9 AL |
7336 | |
7337 | ||
7338 | /* Cray Pointees can be declared as: | |
b3aefde2 | 7339 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 7340 | |
32e8bb8e | 7341 | match |
83d890b9 AL |
7342 | gfc_mod_pointee_as (gfc_array_spec *as) |
7343 | { | |
7344 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7345 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 7346 | as->cp_was_assumed = true; |
83d890b9 AL |
7347 | else if (as->type == AS_ASSUMED_SHAPE) |
7348 | { | |
7349 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7350 | return MATCH_ERROR; | |
7351 | } | |
7352 | return MATCH_YES; | |
7353 | } | |
25d8f0a2 TS |
7354 | |
7355 | ||
7356 | /* Match the enum definition statement, here we are trying to match | |
7357 | the first line of enum definition statement. | |
7358 | Returns MATCH_YES if match is found. */ | |
7359 | ||
7360 | match | |
7361 | gfc_match_enum (void) | |
7362 | { | |
7363 | match m; | |
7364 | ||
7365 | m = gfc_match_eos (); | |
7366 | if (m != MATCH_YES) | |
7367 | return m; | |
7368 | ||
6133c68a | 7369 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ENUM and ENUMERATOR at %C") |
25d8f0a2 TS |
7370 | == FAILURE) |
7371 | return MATCH_ERROR; | |
7372 | ||
7373 | return MATCH_YES; | |
7374 | } | |
7375 | ||
7376 | ||
31224396 SK |
7377 | /* Returns an initializer whose value is one higher than the value of the |
7378 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7379 | initializers value will be set to zero. The initializer's kind | |
7380 | will be set to gfc_c_int_kind. | |
7381 | ||
7382 | If -fshort-enums is given, the appropriate kind will be selected | |
7383 | later after all enumerators have been parsed. A warning is issued | |
7384 | here if an initializer exceeds gfc_c_int_kind. */ | |
7385 | ||
7386 | static gfc_expr * | |
7387 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7388 | { | |
7389 | gfc_expr *result; | |
b7e75771 | 7390 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
7391 | |
7392 | mpz_init (result->value.integer); | |
7393 | ||
7394 | if (last_initializer != NULL) | |
7395 | { | |
7396 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7397 | result->where = last_initializer->where; | |
7398 | ||
7399 | if (gfc_check_integer_range (result->value.integer, | |
7400 | gfc_c_int_kind) != ARITH_OK) | |
7401 | { | |
7402 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7403 | return NULL; | |
7404 | } | |
7405 | } | |
7406 | else | |
7407 | { | |
7408 | /* Control comes here, if it's the very first enumerator and no | |
7409 | initializer has been given. It will be initialized to zero. */ | |
7410 | mpz_set_si (result->value.integer, 0); | |
7411 | } | |
7412 | ||
7413 | return result; | |
7414 | } | |
7415 | ||
7416 | ||
6133c68a TS |
7417 | /* Match a variable name with an optional initializer. When this |
7418 | subroutine is called, a variable is expected to be parsed next. | |
7419 | Depending on what is happening at the moment, updates either the | |
7420 | symbol table or the current interface. */ | |
7421 | ||
7422 | static match | |
7423 | enumerator_decl (void) | |
7424 | { | |
7425 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7426 | gfc_expr *initializer; | |
7427 | gfc_array_spec *as = NULL; | |
7428 | gfc_symbol *sym; | |
7429 | locus var_locus; | |
7430 | match m; | |
17b1d2a0 | 7431 | gfc_try t; |
6133c68a TS |
7432 | locus old_locus; |
7433 | ||
7434 | initializer = NULL; | |
7435 | old_locus = gfc_current_locus; | |
7436 | ||
7437 | /* When we get here, we've just matched a list of attributes and | |
7438 | maybe a type and a double colon. The next thing we expect to see | |
7439 | is the name of the symbol. */ | |
7440 | m = gfc_match_name (name); | |
7441 | if (m != MATCH_YES) | |
7442 | goto cleanup; | |
7443 | ||
7444 | var_locus = gfc_current_locus; | |
7445 | ||
7446 | /* OK, we've successfully matched the declaration. Now put the | |
7447 | symbol in the current namespace. If we fail to create the symbol, | |
7448 | bail out. */ | |
e69afb29 | 7449 | if (build_sym (name, NULL, false, &as, &var_locus) == FAILURE) |
6133c68a TS |
7450 | { |
7451 | m = MATCH_ERROR; | |
7452 | goto cleanup; | |
7453 | } | |
7454 | ||
7455 | /* The double colon must be present in order to have initializers. | |
7456 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7457 | if (colon_seen) | |
7458 | { | |
7459 | if (gfc_match_char ('=') == MATCH_YES) | |
7460 | { | |
7461 | m = gfc_match_init_expr (&initializer); | |
7462 | if (m == MATCH_NO) | |
7463 | { | |
7464 | gfc_error ("Expected an initialization expression at %C"); | |
7465 | m = MATCH_ERROR; | |
7466 | } | |
7467 | ||
7468 | if (m != MATCH_YES) | |
7469 | goto cleanup; | |
7470 | } | |
7471 | } | |
7472 | ||
7473 | /* If we do not have an initializer, the initialization value of the | |
7474 | previous enumerator (stored in last_initializer) is incremented | |
7475 | by 1 and is used to initialize the current enumerator. */ | |
7476 | if (initializer == NULL) | |
31224396 | 7477 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 7478 | |
6133c68a TS |
7479 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7480 | { | |
01e64c3d JJ |
7481 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7482 | &var_locus); | |
d51347f9 | 7483 | m = MATCH_ERROR; |
6133c68a TS |
7484 | goto cleanup; |
7485 | } | |
7486 | ||
7487 | /* Store this current initializer, for the next enumerator variable | |
7488 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7489 | use last_initializer below. */ | |
7490 | last_initializer = initializer; | |
7491 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7492 | ||
7493 | /* Maintain enumerator history. */ | |
7494 | gfc_find_symbol (name, NULL, 0, &sym); | |
7495 | create_enum_history (sym, last_initializer); | |
7496 | ||
7497 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
7498 | ||
7499 | cleanup: | |
7500 | /* Free stuff up and return. */ | |
7501 | gfc_free_expr (initializer); | |
7502 | ||
7503 | return m; | |
7504 | } | |
7505 | ||
7506 | ||
66e4ab31 | 7507 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
7508 | |
7509 | match | |
7510 | gfc_match_enumerator_def (void) | |
7511 | { | |
7512 | match m; | |
17b1d2a0 | 7513 | gfc_try t; |
d51347f9 | 7514 | |
25d8f0a2 | 7515 | gfc_clear_ts (¤t_ts); |
d51347f9 | 7516 | |
25d8f0a2 TS |
7517 | m = gfc_match (" enumerator"); |
7518 | if (m != MATCH_YES) | |
7519 | return m; | |
6133c68a TS |
7520 | |
7521 | m = gfc_match (" :: "); | |
7522 | if (m == MATCH_ERROR) | |
7523 | return m; | |
7524 | ||
7525 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 7526 | |
25d8f0a2 TS |
7527 | if (gfc_current_state () != COMP_ENUM) |
7528 | { | |
7529 | gfc_error ("ENUM definition statement expected before %C"); | |
7530 | gfc_free_enum_history (); | |
7531 | return MATCH_ERROR; | |
7532 | } | |
7533 | ||
7534 | (¤t_ts)->type = BT_INTEGER; | |
7535 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 7536 | |
6133c68a TS |
7537 | gfc_clear_attr (¤t_attr); |
7538 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
7539 | if (t == FAILURE) | |
25d8f0a2 | 7540 | { |
6133c68a | 7541 | m = MATCH_ERROR; |
25d8f0a2 TS |
7542 | goto cleanup; |
7543 | } | |
7544 | ||
25d8f0a2 TS |
7545 | for (;;) |
7546 | { | |
6133c68a | 7547 | m = enumerator_decl (); |
25d8f0a2 | 7548 | if (m == MATCH_ERROR) |
01e64c3d JJ |
7549 | { |
7550 | gfc_free_enum_history (); | |
7551 | goto cleanup; | |
7552 | } | |
25d8f0a2 TS |
7553 | if (m == MATCH_NO) |
7554 | break; | |
7555 | ||
7556 | if (gfc_match_eos () == MATCH_YES) | |
7557 | goto cleanup; | |
7558 | if (gfc_match_char (',') != MATCH_YES) | |
7559 | break; | |
7560 | } | |
7561 | ||
7562 | if (gfc_current_state () == COMP_ENUM) | |
7563 | { | |
7564 | gfc_free_enum_history (); | |
7565 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7566 | m = MATCH_ERROR; | |
7567 | } | |
7568 | ||
7569 | cleanup: | |
7570 | gfc_free_array_spec (current_as); | |
7571 | current_as = NULL; | |
7572 | return m; | |
7573 | ||
7574 | } | |
7575 | ||
f6fad28e | 7576 | |
30b608eb DK |
7577 | /* Match binding attributes. */ |
7578 | ||
7579 | static match | |
713485cc | 7580 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
7581 | { |
7582 | bool found_passing = false; | |
713485cc | 7583 | bool seen_ptr = false; |
90661f26 | 7584 | match m = MATCH_YES; |
30b608eb DK |
7585 | |
7586 | /* Intialize to defaults. Do so even before the MATCH_NO check so that in | |
7587 | this case the defaults are in there. */ | |
7588 | ba->access = ACCESS_UNKNOWN; | |
7589 | ba->pass_arg = NULL; | |
7590 | ba->pass_arg_num = 0; | |
7591 | ba->nopass = 0; | |
7592 | ba->non_overridable = 0; | |
b0e5fa94 | 7593 | ba->deferred = 0; |
90661f26 | 7594 | ba->ppc = ppc; |
30b608eb DK |
7595 | |
7596 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
7597 | m = gfc_match_char (','); |
7598 | if (m == MATCH_NO) | |
7599 | goto done; | |
30b608eb DK |
7600 | |
7601 | do | |
7602 | { | |
e157f736 DK |
7603 | /* Access specifier. */ |
7604 | ||
7605 | m = gfc_match (" public"); | |
30b608eb DK |
7606 | if (m == MATCH_ERROR) |
7607 | goto error; | |
7608 | if (m == MATCH_YES) | |
7609 | { | |
e157f736 | 7610 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7611 | { |
e157f736 | 7612 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7613 | goto error; |
7614 | } | |
7615 | ||
e157f736 | 7616 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
7617 | continue; |
7618 | } | |
7619 | ||
e157f736 | 7620 | m = gfc_match (" private"); |
30b608eb DK |
7621 | if (m == MATCH_ERROR) |
7622 | goto error; | |
7623 | if (m == MATCH_YES) | |
7624 | { | |
e157f736 | 7625 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7626 | { |
e157f736 | 7627 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7628 | goto error; |
7629 | } | |
7630 | ||
e157f736 | 7631 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
7632 | continue; |
7633 | } | |
7634 | ||
e157f736 DK |
7635 | /* If inside GENERIC, the following is not allowed. */ |
7636 | if (!generic) | |
30b608eb | 7637 | { |
30b608eb | 7638 | |
e157f736 DK |
7639 | /* NOPASS flag. */ |
7640 | m = gfc_match (" nopass"); | |
7641 | if (m == MATCH_ERROR) | |
7642 | goto error; | |
7643 | if (m == MATCH_YES) | |
30b608eb | 7644 | { |
e157f736 DK |
7645 | if (found_passing) |
7646 | { | |
7647 | gfc_error ("Binding attributes already specify passing," | |
7648 | " illegal NOPASS at %C"); | |
7649 | goto error; | |
7650 | } | |
7651 | ||
7652 | found_passing = true; | |
7653 | ba->nopass = 1; | |
7654 | continue; | |
30b608eb DK |
7655 | } |
7656 | ||
e157f736 DK |
7657 | /* PASS possibly including argument. */ |
7658 | m = gfc_match (" pass"); | |
7659 | if (m == MATCH_ERROR) | |
7660 | goto error; | |
7661 | if (m == MATCH_YES) | |
30b608eb | 7662 | { |
e157f736 DK |
7663 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
7664 | ||
7665 | if (found_passing) | |
7666 | { | |
7667 | gfc_error ("Binding attributes already specify passing," | |
7668 | " illegal PASS at %C"); | |
7669 | goto error; | |
7670 | } | |
7671 | ||
7672 | m = gfc_match (" ( %n )", arg); | |
7673 | if (m == MATCH_ERROR) | |
7674 | goto error; | |
7675 | if (m == MATCH_YES) | |
90661f26 | 7676 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
7677 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
7678 | ||
7679 | found_passing = true; | |
7680 | ba->nopass = 0; | |
7681 | continue; | |
30b608eb DK |
7682 | } |
7683 | ||
713485cc JW |
7684 | if (ppc) |
7685 | { | |
7686 | /* POINTER flag. */ | |
7687 | m = gfc_match (" pointer"); | |
7688 | if (m == MATCH_ERROR) | |
7689 | goto error; | |
7690 | if (m == MATCH_YES) | |
7691 | { | |
7692 | if (seen_ptr) | |
7693 | { | |
7694 | gfc_error ("Duplicate POINTER attribute at %C"); | |
7695 | goto error; | |
7696 | } | |
7697 | ||
7698 | seen_ptr = true; | |
713485cc JW |
7699 | continue; |
7700 | } | |
7701 | } | |
7702 | else | |
7703 | { | |
7704 | /* NON_OVERRIDABLE flag. */ | |
7705 | m = gfc_match (" non_overridable"); | |
7706 | if (m == MATCH_ERROR) | |
7707 | goto error; | |
7708 | if (m == MATCH_YES) | |
7709 | { | |
7710 | if (ba->non_overridable) | |
7711 | { | |
7712 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
7713 | goto error; | |
7714 | } | |
7715 | ||
7716 | ba->non_overridable = 1; | |
7717 | continue; | |
7718 | } | |
7719 | ||
7720 | /* DEFERRED flag. */ | |
7721 | m = gfc_match (" deferred"); | |
7722 | if (m == MATCH_ERROR) | |
7723 | goto error; | |
7724 | if (m == MATCH_YES) | |
7725 | { | |
7726 | if (ba->deferred) | |
7727 | { | |
7728 | gfc_error ("Duplicate DEFERRED at %C"); | |
7729 | goto error; | |
7730 | } | |
7731 | ||
7732 | ba->deferred = 1; | |
7733 | continue; | |
7734 | } | |
7735 | } | |
7736 | ||
30b608eb DK |
7737 | } |
7738 | ||
7739 | /* Nothing matching found. */ | |
e157f736 DK |
7740 | if (generic) |
7741 | gfc_error ("Expected access-specifier at %C"); | |
7742 | else | |
7743 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
7744 | goto error; |
7745 | } | |
7746 | while (gfc_match_char (',') == MATCH_YES); | |
7747 | ||
b0e5fa94 DK |
7748 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
7749 | if (ba->non_overridable && ba->deferred) | |
7750 | { | |
7751 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
7752 | goto error; | |
7753 | } | |
7754 | ||
90661f26 JW |
7755 | m = MATCH_YES; |
7756 | ||
7757 | done: | |
e157f736 DK |
7758 | if (ba->access == ACCESS_UNKNOWN) |
7759 | ba->access = gfc_typebound_default_access; | |
7760 | ||
713485cc JW |
7761 | if (ppc && !seen_ptr) |
7762 | { | |
7763 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
7764 | " at %C"); | |
7765 | goto error; | |
7766 | } | |
7767 | ||
90661f26 | 7768 | return m; |
30b608eb DK |
7769 | |
7770 | error: | |
30b608eb DK |
7771 | return MATCH_ERROR; |
7772 | } | |
7773 | ||
7774 | ||
7775 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
7776 | ||
7777 | static match | |
7778 | match_procedure_in_type (void) | |
7779 | { | |
7780 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7781 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 7782 | char* target = NULL, *ifc = NULL; |
3e15518b | 7783 | gfc_typebound_proc tb; |
30b608eb DK |
7784 | bool seen_colons; |
7785 | bool seen_attrs; | |
7786 | match m; | |
7787 | gfc_symtree* stree; | |
7788 | gfc_namespace* ns; | |
7789 | gfc_symbol* block; | |
1be17993 | 7790 | int num; |
30b608eb DK |
7791 | |
7792 | /* Check current state. */ | |
7793 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
7794 | block = gfc_state_stack->previous->sym; | |
7795 | gcc_assert (block); | |
7796 | ||
b0e5fa94 | 7797 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
7798 | if (gfc_match (" (") == MATCH_YES) |
7799 | { | |
b0e5fa94 DK |
7800 | m = gfc_match_name (target_buf); |
7801 | if (m == MATCH_ERROR) | |
7802 | return m; | |
7803 | if (m != MATCH_YES) | |
7804 | { | |
7805 | gfc_error ("Interface-name expected after '(' at %C"); | |
7806 | return MATCH_ERROR; | |
7807 | } | |
7808 | ||
7809 | if (gfc_match (" )") != MATCH_YES) | |
7810 | { | |
7811 | gfc_error ("')' expected at %C"); | |
7812 | return MATCH_ERROR; | |
7813 | } | |
7814 | ||
1be17993 | 7815 | ifc = target_buf; |
30b608eb DK |
7816 | } |
7817 | ||
7818 | /* Construct the data structure. */ | |
ff5b6492 | 7819 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 7820 | tb.where = gfc_current_locus; |
30b608eb DK |
7821 | |
7822 | /* Match binding attributes. */ | |
3e15518b | 7823 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
7824 | if (m == MATCH_ERROR) |
7825 | return m; | |
7826 | seen_attrs = (m == MATCH_YES); | |
7827 | ||
1be17993 | 7828 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 7829 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
7830 | { |
7831 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
7832 | return MATCH_ERROR; | |
7833 | } | |
3e15518b | 7834 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
7835 | { |
7836 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
7837 | return MATCH_ERROR; | |
7838 | } | |
7839 | ||
30b608eb DK |
7840 | /* Match the colons. */ |
7841 | m = gfc_match (" ::"); | |
7842 | if (m == MATCH_ERROR) | |
7843 | return m; | |
7844 | seen_colons = (m == MATCH_YES); | |
7845 | if (seen_attrs && !seen_colons) | |
7846 | { | |
7847 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
7848 | return MATCH_ERROR; | |
7849 | } | |
7850 | ||
1be17993 JW |
7851 | /* Match the binding names. */ |
7852 | for(num=1;;num++) | |
30b608eb | 7853 | { |
1be17993 JW |
7854 | m = gfc_match_name (name); |
7855 | if (m == MATCH_ERROR) | |
7856 | return m; | |
7857 | if (m == MATCH_NO) | |
b0e5fa94 | 7858 | { |
1be17993 | 7859 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
7860 | return MATCH_ERROR; |
7861 | } | |
7862 | ||
1be17993 JW |
7863 | if (num>1 && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: PROCEDURE list" |
7864 | " at %C") == FAILURE) | |
7865 | return MATCH_ERROR; | |
30b608eb | 7866 | |
1be17993 JW |
7867 | /* Try to match the '=> target', if it's there. */ |
7868 | target = ifc; | |
7869 | m = gfc_match (" =>"); | |
30b608eb DK |
7870 | if (m == MATCH_ERROR) |
7871 | return m; | |
1be17993 | 7872 | if (m == MATCH_YES) |
30b608eb | 7873 | { |
3e15518b | 7874 | if (tb.deferred) |
1be17993 JW |
7875 | { |
7876 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
7877 | return MATCH_ERROR; | |
7878 | } | |
7879 | ||
7880 | if (!seen_colons) | |
7881 | { | |
7882 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
7883 | " at %C"); | |
7884 | return MATCH_ERROR; | |
7885 | } | |
7886 | ||
7887 | m = gfc_match_name (target_buf); | |
7888 | if (m == MATCH_ERROR) | |
7889 | return m; | |
7890 | if (m == MATCH_NO) | |
7891 | { | |
7892 | gfc_error ("Expected binding target after '=>' at %C"); | |
7893 | return MATCH_ERROR; | |
7894 | } | |
7895 | target = target_buf; | |
30b608eb | 7896 | } |
30b608eb | 7897 | |
1be17993 JW |
7898 | /* If no target was found, it has the same name as the binding. */ |
7899 | if (!target) | |
7900 | target = name; | |
30b608eb | 7901 | |
1be17993 JW |
7902 | /* Get the namespace to insert the symbols into. */ |
7903 | ns = block->f2k_derived; | |
7904 | gcc_assert (ns); | |
30b608eb | 7905 | |
1be17993 | 7906 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 7907 | if (tb.deferred && !block->attr.abstract) |
1be17993 JW |
7908 | { |
7909 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
7910 | "is not ABSTRACT", block->name); | |
7911 | return MATCH_ERROR; | |
7912 | } | |
30b608eb | 7913 | |
1be17993 JW |
7914 | /* See if we already have a binding with this name in the symtree which |
7915 | would be an error. If a GENERIC already targetted this binding, it may | |
7916 | be already there but then typebound is still NULL. */ | |
7917 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 7918 | if (stree && stree->n.tb) |
1be17993 JW |
7919 | { |
7920 | gfc_error ("There is already a procedure with binding name '%s' for " | |
7921 | "the derived type '%s' at %C", name, block->name); | |
7922 | return MATCH_ERROR; | |
7923 | } | |
b0e5fa94 | 7924 | |
1be17993 | 7925 | /* Insert it and set attributes. */ |
30b608eb | 7926 | |
9f23af48 MM |
7927 | if (!stree) |
7928 | { | |
7929 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
7930 | gcc_assert (stree); | |
7931 | } | |
3e15518b | 7932 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 7933 | |
3e15518b JW |
7934 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
7935 | false)) | |
1be17993 | 7936 | return MATCH_ERROR; |
3e15518b | 7937 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1be17993 JW |
7938 | |
7939 | if (gfc_match_eos () == MATCH_YES) | |
7940 | return MATCH_YES; | |
7941 | if (gfc_match_char (',') != MATCH_YES) | |
7942 | goto syntax; | |
e34ccb4c | 7943 | } |
30b608eb | 7944 | |
1be17993 JW |
7945 | syntax: |
7946 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7947 | return MATCH_ERROR; | |
30b608eb DK |
7948 | } |
7949 | ||
7950 | ||
e157f736 DK |
7951 | /* Match a GENERIC procedure binding inside a derived type. */ |
7952 | ||
7953 | match | |
7954 | gfc_match_generic (void) | |
7955 | { | |
7956 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 7957 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
7958 | gfc_symbol* block; |
7959 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
7960 | gfc_typebound_proc* tb; | |
e157f736 | 7961 | gfc_namespace* ns; |
94747289 DK |
7962 | interface_type op_type; |
7963 | gfc_intrinsic_op op; | |
e157f736 DK |
7964 | match m; |
7965 | ||
7966 | /* Check current state. */ | |
7967 | if (gfc_current_state () == COMP_DERIVED) | |
7968 | { | |
7969 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
7970 | return MATCH_ERROR; | |
7971 | } | |
7972 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
7973 | return MATCH_NO; | |
7974 | block = gfc_state_stack->previous->sym; | |
7975 | ns = block->f2k_derived; | |
7976 | gcc_assert (block && ns); | |
7977 | ||
ff5b6492 MM |
7978 | memset (&tbattr, 0, sizeof (tbattr)); |
7979 | tbattr.where = gfc_current_locus; | |
7980 | ||
e157f736 | 7981 | /* See if we get an access-specifier. */ |
713485cc | 7982 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
7983 | if (m == MATCH_ERROR) |
7984 | goto error; | |
7985 | ||
7986 | /* Now the colons, those are required. */ | |
7987 | if (gfc_match (" ::") != MATCH_YES) | |
7988 | { | |
7989 | gfc_error ("Expected '::' at %C"); | |
7990 | goto error; | |
7991 | } | |
7992 | ||
94747289 DK |
7993 | /* Match the binding name; depending on type (operator / generic) format |
7994 | it for future error messages into bind_name. */ | |
7995 | ||
7996 | m = gfc_match_generic_spec (&op_type, name, &op); | |
e157f736 DK |
7997 | if (m == MATCH_ERROR) |
7998 | return MATCH_ERROR; | |
7999 | if (m == MATCH_NO) | |
8000 | { | |
94747289 | 8001 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8002 | goto error; |
8003 | } | |
8004 | ||
94747289 | 8005 | switch (op_type) |
e157f736 | 8006 | { |
94747289 DK |
8007 | case INTERFACE_GENERIC: |
8008 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8009 | break; | |
8010 | ||
8011 | case INTERFACE_USER_OP: | |
8012 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8013 | break; | |
8014 | ||
8015 | case INTERFACE_INTRINSIC_OP: | |
8016 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8017 | gfc_op2string (op)); | |
8018 | break; | |
8019 | ||
8020 | default: | |
8021 | gcc_unreachable (); | |
8022 | } | |
e34ccb4c | 8023 | |
94747289 DK |
8024 | /* Match the required =>. */ |
8025 | if (gfc_match (" =>") != MATCH_YES) | |
8026 | { | |
8027 | gfc_error ("Expected '=>' at %C"); | |
8028 | goto error; | |
8029 | } | |
8030 | ||
8031 | /* Try to find existing GENERIC binding with this name / for this operator; | |
8032 | if there is something, check that it is another GENERIC and then extend | |
8033 | it rather than building a new node. Otherwise, create it and put it | |
8034 | at the right position. */ | |
8035 | ||
8036 | switch (op_type) | |
8037 | { | |
8038 | case INTERFACE_USER_OP: | |
8039 | case INTERFACE_GENERIC: | |
8040 | { | |
8041 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8042 | gfc_symtree* st; | |
8043 | ||
8044 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8045 | if (st) | |
8046 | { | |
8047 | tb = st->n.tb; | |
8048 | gcc_assert (tb); | |
8049 | } | |
8050 | else | |
8051 | tb = NULL; | |
8052 | ||
8053 | break; | |
8054 | } | |
8055 | ||
8056 | case INTERFACE_INTRINSIC_OP: | |
8057 | tb = ns->tb_op[op]; | |
8058 | break; | |
8059 | ||
8060 | default: | |
8061 | gcc_unreachable (); | |
8062 | } | |
8063 | ||
8064 | if (tb) | |
8065 | { | |
e34ccb4c | 8066 | if (!tb->is_generic) |
e157f736 | 8067 | { |
94747289 | 8068 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 DK |
8069 | gfc_error ("There's already a non-generic procedure with binding name" |
8070 | " '%s' for the derived type '%s' at %C", | |
94747289 | 8071 | bind_name, block->name); |
e157f736 DK |
8072 | goto error; |
8073 | } | |
8074 | ||
e157f736 DK |
8075 | if (tb->access != tbattr.access) |
8076 | { | |
8077 | gfc_error ("Binding at %C must have the same access as already" | |
94747289 | 8078 | " defined binding '%s'", bind_name); |
e157f736 DK |
8079 | goto error; |
8080 | } | |
8081 | } | |
8082 | else | |
8083 | { | |
3e15518b | 8084 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8085 | tb->where = gfc_current_locus; |
8086 | tb->access = tbattr.access; | |
8087 | tb->is_generic = 1; | |
8088 | tb->u.generic = NULL; | |
94747289 DK |
8089 | |
8090 | switch (op_type) | |
8091 | { | |
8092 | case INTERFACE_GENERIC: | |
8093 | case INTERFACE_USER_OP: | |
8094 | { | |
8095 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8096 | gfc_symtree* st; | |
8097 | ||
8098 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8099 | name); | |
8100 | gcc_assert (st); | |
8101 | st->n.tb = tb; | |
8102 | ||
8103 | break; | |
8104 | } | |
8105 | ||
8106 | case INTERFACE_INTRINSIC_OP: | |
8107 | ns->tb_op[op] = tb; | |
8108 | break; | |
8109 | ||
8110 | default: | |
8111 | gcc_unreachable (); | |
8112 | } | |
e157f736 DK |
8113 | } |
8114 | ||
8115 | /* Now, match all following names as specific targets. */ | |
8116 | do | |
8117 | { | |
8118 | gfc_symtree* target_st; | |
8119 | gfc_tbp_generic* target; | |
8120 | ||
8121 | m = gfc_match_name (name); | |
8122 | if (m == MATCH_ERROR) | |
8123 | goto error; | |
8124 | if (m == MATCH_NO) | |
8125 | { | |
8126 | gfc_error ("Expected specific binding name at %C"); | |
8127 | goto error; | |
8128 | } | |
8129 | ||
e34ccb4c | 8130 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8131 | |
8132 | /* See if this is a duplicate specification. */ | |
8133 | for (target = tb->u.generic; target; target = target->next) | |
8134 | if (target_st == target->specific_st) | |
8135 | { | |
8136 | gfc_error ("'%s' already defined as specific binding for the" | |
94747289 | 8137 | " generic '%s' at %C", name, bind_name); |
e157f736 DK |
8138 | goto error; |
8139 | } | |
8140 | ||
e157f736 DK |
8141 | target = gfc_get_tbp_generic (); |
8142 | target->specific_st = target_st; | |
8143 | target->specific = NULL; | |
8144 | target->next = tb->u.generic; | |
8145 | tb->u.generic = target; | |
8146 | } | |
8147 | while (gfc_match (" ,") == MATCH_YES); | |
8148 | ||
8149 | /* Here should be the end. */ | |
8150 | if (gfc_match_eos () != MATCH_YES) | |
8151 | { | |
8152 | gfc_error ("Junk after GENERIC binding at %C"); | |
8153 | goto error; | |
8154 | } | |
8155 | ||
8156 | return MATCH_YES; | |
8157 | ||
8158 | error: | |
8159 | return MATCH_ERROR; | |
8160 | } | |
8161 | ||
8162 | ||
34523524 DK |
8163 | /* Match a FINAL declaration inside a derived type. */ |
8164 | ||
8165 | match | |
8166 | gfc_match_final_decl (void) | |
8167 | { | |
8168 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8169 | gfc_symbol* sym; | |
8170 | match m; | |
8171 | gfc_namespace* module_ns; | |
8172 | bool first, last; | |
30b608eb | 8173 | gfc_symbol* block; |
34523524 | 8174 | |
33344e0f JW |
8175 | if (gfc_current_form == FORM_FREE) |
8176 | { | |
8177 | char c = gfc_peek_ascii_char (); | |
8178 | if (!gfc_is_whitespace (c) && c != ':') | |
8179 | return MATCH_NO; | |
8180 | } | |
8181 | ||
30b608eb | 8182 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8183 | { |
33344e0f JW |
8184 | if (gfc_current_form == FORM_FIXED) |
8185 | return MATCH_NO; | |
8186 | ||
34523524 | 8187 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8188 | "CONTAINS section"); |
34523524 DK |
8189 | return MATCH_ERROR; |
8190 | } | |
8191 | ||
30b608eb DK |
8192 | block = gfc_state_stack->previous->sym; |
8193 | gcc_assert (block); | |
34523524 | 8194 | |
30b608eb DK |
8195 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8196 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8197 | { |
8198 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8199 | " specification part of a MODULE"); | |
8200 | return MATCH_ERROR; | |
8201 | } | |
8202 | ||
8203 | module_ns = gfc_current_ns; | |
8204 | gcc_assert (module_ns); | |
8205 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8206 | ||
8207 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8208 | if (gfc_match (" ::") == MATCH_ERROR) | |
8209 | return MATCH_ERROR; | |
8210 | ||
8211 | /* Match the sequence of procedure names. */ | |
8212 | first = true; | |
8213 | last = false; | |
8214 | do | |
8215 | { | |
8216 | gfc_finalizer* f; | |
8217 | ||
8218 | if (first && gfc_match_eos () == MATCH_YES) | |
8219 | { | |
8220 | gfc_error ("Empty FINAL at %C"); | |
8221 | return MATCH_ERROR; | |
8222 | } | |
8223 | ||
8224 | m = gfc_match_name (name); | |
8225 | if (m == MATCH_NO) | |
8226 | { | |
8227 | gfc_error ("Expected module procedure name at %C"); | |
8228 | return MATCH_ERROR; | |
8229 | } | |
8230 | else if (m != MATCH_YES) | |
8231 | return MATCH_ERROR; | |
8232 | ||
8233 | if (gfc_match_eos () == MATCH_YES) | |
8234 | last = true; | |
8235 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8236 | { | |
8237 | gfc_error ("Expected ',' at %C"); | |
8238 | return MATCH_ERROR; | |
8239 | } | |
8240 | ||
8241 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8242 | { | |
8243 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8244 | return MATCH_ERROR; | |
8245 | } | |
8246 | ||
8247 | /* Mark the symbol as module procedure. */ | |
8248 | if (sym->attr.proc != PROC_MODULE | |
8249 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
8250 | sym->name, NULL) == FAILURE) | |
8251 | return MATCH_ERROR; | |
8252 | ||
8253 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 8254 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 8255 | if (f->proc_sym == sym) |
34523524 DK |
8256 | { |
8257 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8258 | name); | |
8259 | return MATCH_ERROR; | |
8260 | } | |
8261 | ||
8262 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 8263 | gcc_assert (block->f2k_derived); |
34523524 | 8264 | ++sym->refs; |
ece3f663 | 8265 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
8266 | f->proc_sym = sym; |
8267 | f->proc_tree = NULL; | |
34523524 | 8268 | f->where = gfc_current_locus; |
30b608eb DK |
8269 | f->next = block->f2k_derived->finalizers; |
8270 | block->f2k_derived->finalizers = f; | |
34523524 DK |
8271 | |
8272 | first = false; | |
8273 | } | |
8274 | while (!last); | |
8275 | ||
8276 | return MATCH_YES; | |
8277 | } | |
08a6b8e0 TB |
8278 | |
8279 | ||
8280 | const ext_attr_t ext_attr_list[] = { | |
8281 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, | |
8282 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8283 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8284 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8285 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8286 | { NULL, EXT_ATTR_LAST, NULL } | |
8287 | }; | |
8288 | ||
8289 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8290 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8291 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8292 | ||
8293 | TODO: We should support all GCC attributes using the same syntax for | |
8294 | the attribute list, i.e. the list in C | |
8295 | __attributes(( attribute-list )) | |
8296 | matches then | |
8297 | !GCC$ ATTRIBUTES attribute-list :: | |
8298 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8299 | saved into a TREE. | |
8300 | ||
8301 | As there is absolutely no risk of confusion, we should never return | |
8302 | MATCH_NO. */ | |
8303 | match | |
8304 | gfc_match_gcc_attributes (void) | |
8305 | { | |
8306 | symbol_attribute attr; | |
8307 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8308 | unsigned id; | |
8309 | gfc_symbol *sym; | |
8310 | match m; | |
8311 | ||
8312 | gfc_clear_attr (&attr); | |
8313 | for(;;) | |
8314 | { | |
8315 | char ch; | |
8316 | ||
8317 | if (gfc_match_name (name) != MATCH_YES) | |
8318 | return MATCH_ERROR; | |
8319 | ||
8320 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8321 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8322 | break; | |
8323 | ||
8324 | if (id == EXT_ATTR_LAST) | |
8325 | { | |
8326 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8327 | return MATCH_ERROR; | |
8328 | } | |
8329 | ||
2b374f55 | 8330 | if (gfc_add_ext_attribute (&attr, (ext_attr_id_t) id, &gfc_current_locus) |
08a6b8e0 TB |
8331 | == FAILURE) |
8332 | return MATCH_ERROR; | |
8333 | ||
8334 | gfc_gobble_whitespace (); | |
8335 | ch = gfc_next_ascii_char (); | |
8336 | if (ch == ':') | |
8337 | { | |
8338 | /* This is the successful exit condition for the loop. */ | |
8339 | if (gfc_next_ascii_char () == ':') | |
8340 | break; | |
8341 | } | |
8342 | ||
8343 | if (ch == ',') | |
8344 | continue; | |
8345 | ||
8346 | goto syntax; | |
8347 | } | |
8348 | ||
8349 | if (gfc_match_eos () == MATCH_YES) | |
8350 | goto syntax; | |
8351 | ||
8352 | for(;;) | |
8353 | { | |
8354 | m = gfc_match_name (name); | |
8355 | if (m != MATCH_YES) | |
8356 | return m; | |
8357 | ||
8358 | if (find_special (name, &sym, true)) | |
8359 | return MATCH_ERROR; | |
8360 | ||
8361 | sym->attr.ext_attr |= attr.ext_attr; | |
8362 | ||
8363 | if (gfc_match_eos () == MATCH_YES) | |
8364 | break; | |
8365 | ||
8366 | if (gfc_match_char (',') != MATCH_YES) | |
8367 | goto syntax; | |
8368 | } | |
8369 | ||
8370 | return MATCH_YES; | |
8371 | ||
8372 | syntax: | |
8373 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8374 | return MATCH_ERROR; | |
8375 | } |