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Commit | Line | Data |
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6de9cd9a | 1 | /* Declaration statement matcher |
f1f39033 | 2 | Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
636dff67 | 3 | Free Software Foundation, Inc. |
6de9cd9a DN |
4 | Contributed by Andy Vaught |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 10 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 11 | version. |
6de9cd9a | 12 | |
9fc4d79b TS |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 21 | |
6de9cd9a | 22 | #include "config.h" |
d22e4895 | 23 | #include "system.h" |
6de9cd9a DN |
24 | #include "gfortran.h" |
25 | #include "match.h" | |
26 | #include "parse.h" | |
cab129d1 | 27 | #include "flags.h" |
b7e75771 | 28 | #include "constructor.h" |
ca39e6f2 FXC |
29 | |
30 | /* Macros to access allocate memory for gfc_data_variable, | |
31 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
32 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
33 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
34 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
35 | |
36 | ||
2054fc29 | 37 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
38 | during a type-declaration statement. */ |
39 | ||
40 | static int old_char_selector; | |
41 | ||
46fa431d | 42 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
43 | statement, they get them from the following static variables. The |
44 | first part of a declaration sets these variables and the second | |
45 | part copies these into symbol structures. */ | |
46 | ||
47 | static gfc_typespec current_ts; | |
48 | ||
49 | static symbol_attribute current_attr; | |
50 | static gfc_array_spec *current_as; | |
51 | static int colon_seen; | |
52 | ||
a8b3b0b6 CR |
53 | /* The current binding label (if any). */ |
54 | static char curr_binding_label[GFC_MAX_BINDING_LABEL_LEN + 1]; | |
55 | /* Need to know how many identifiers are on the current data declaration | |
56 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
57 | static int num_idents_on_line; | |
58 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
59 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
60 | static int has_name_equals = 0; | |
61 | ||
25d8f0a2 TS |
62 | /* Initializer of the previous enumerator. */ |
63 | ||
64 | static gfc_expr *last_initializer; | |
65 | ||
66 | /* History of all the enumerators is maintained, so that | |
67 | kind values of all the enumerators could be updated depending | |
68 | upon the maximum initialized value. */ | |
69 | ||
70 | typedef struct enumerator_history | |
71 | { | |
72 | gfc_symbol *sym; | |
73 | gfc_expr *initializer; | |
74 | struct enumerator_history *next; | |
75 | } | |
76 | enumerator_history; | |
77 | ||
78 | /* Header of enum history chain. */ | |
79 | ||
80 | static enumerator_history *enum_history = NULL; | |
81 | ||
82 | /* Pointer of enum history node containing largest initializer. */ | |
83 | ||
84 | static enumerator_history *max_enum = NULL; | |
85 | ||
6de9cd9a DN |
86 | /* gfc_new_block points to the symbol of a newly matched block. */ |
87 | ||
88 | gfc_symbol *gfc_new_block; | |
89 | ||
1c8bcdf7 | 90 | bool gfc_matching_function; |
e2d29968 | 91 | |
6de9cd9a | 92 | |
294fbfc8 TS |
93 | /********************* DATA statement subroutines *********************/ |
94 | ||
2220652d PT |
95 | static bool in_match_data = false; |
96 | ||
97 | bool | |
98 | gfc_in_match_data (void) | |
99 | { | |
100 | return in_match_data; | |
101 | } | |
102 | ||
ca39e6f2 FXC |
103 | static void |
104 | set_in_match_data (bool set_value) | |
2220652d PT |
105 | { |
106 | in_match_data = set_value; | |
107 | } | |
108 | ||
294fbfc8 TS |
109 | /* Free a gfc_data_variable structure and everything beneath it. */ |
110 | ||
111 | static void | |
636dff67 | 112 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
113 | { |
114 | gfc_data_variable *q; | |
115 | ||
116 | for (; p; p = q) | |
117 | { | |
118 | q = p->next; | |
119 | gfc_free_expr (p->expr); | |
120 | gfc_free_iterator (&p->iter, 0); | |
121 | free_variable (p->list); | |
cede9502 | 122 | free (p); |
294fbfc8 TS |
123 | } |
124 | } | |
125 | ||
126 | ||
127 | /* Free a gfc_data_value structure and everything beneath it. */ | |
128 | ||
129 | static void | |
636dff67 | 130 | free_value (gfc_data_value *p) |
294fbfc8 TS |
131 | { |
132 | gfc_data_value *q; | |
133 | ||
134 | for (; p; p = q) | |
135 | { | |
136 | q = p->next; | |
c9d75a48 | 137 | mpz_clear (p->repeat); |
294fbfc8 | 138 | gfc_free_expr (p->expr); |
cede9502 | 139 | free (p); |
294fbfc8 TS |
140 | } |
141 | } | |
142 | ||
143 | ||
144 | /* Free a list of gfc_data structures. */ | |
145 | ||
146 | void | |
636dff67 | 147 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
148 | { |
149 | gfc_data *q; | |
150 | ||
151 | for (; p; p = q) | |
152 | { | |
153 | q = p->next; | |
294fbfc8 TS |
154 | free_variable (p->var); |
155 | free_value (p->value); | |
cede9502 | 156 | free (p); |
294fbfc8 TS |
157 | } |
158 | } | |
159 | ||
160 | ||
a9f6f1f2 | 161 | /* Free all data in a namespace. */ |
636dff67 | 162 | |
a9f6f1f2 | 163 | static void |
66e4ab31 | 164 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
165 | { |
166 | gfc_data *d; | |
167 | ||
168 | for (;ns->data;) | |
169 | { | |
170 | d = ns->data->next; | |
cede9502 | 171 | free (ns->data); |
a9f6f1f2 JD |
172 | ns->data = d; |
173 | } | |
174 | } | |
175 | ||
176 | ||
294fbfc8 TS |
177 | static match var_element (gfc_data_variable *); |
178 | ||
179 | /* Match a list of variables terminated by an iterator and a right | |
180 | parenthesis. */ | |
181 | ||
182 | static match | |
636dff67 | 183 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
184 | { |
185 | gfc_data_variable *tail, var; | |
186 | match m; | |
187 | ||
188 | m = var_element (&var); | |
189 | if (m == MATCH_ERROR) | |
190 | return MATCH_ERROR; | |
191 | if (m == MATCH_NO) | |
192 | goto syntax; | |
193 | ||
194 | tail = gfc_get_data_variable (); | |
195 | *tail = var; | |
196 | ||
197 | parent->list = tail; | |
198 | ||
199 | for (;;) | |
200 | { | |
201 | if (gfc_match_char (',') != MATCH_YES) | |
202 | goto syntax; | |
203 | ||
204 | m = gfc_match_iterator (&parent->iter, 1); | |
205 | if (m == MATCH_YES) | |
206 | break; | |
207 | if (m == MATCH_ERROR) | |
208 | return MATCH_ERROR; | |
209 | ||
210 | m = var_element (&var); | |
211 | if (m == MATCH_ERROR) | |
212 | return MATCH_ERROR; | |
213 | if (m == MATCH_NO) | |
214 | goto syntax; | |
215 | ||
216 | tail->next = gfc_get_data_variable (); | |
217 | tail = tail->next; | |
218 | ||
219 | *tail = var; | |
220 | } | |
221 | ||
222 | if (gfc_match_char (')') != MATCH_YES) | |
223 | goto syntax; | |
224 | return MATCH_YES; | |
225 | ||
226 | syntax: | |
227 | gfc_syntax_error (ST_DATA); | |
228 | return MATCH_ERROR; | |
229 | } | |
230 | ||
231 | ||
232 | /* Match a single element in a data variable list, which can be a | |
233 | variable-iterator list. */ | |
234 | ||
235 | static match | |
7b901ac4 | 236 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
237 | { |
238 | match m; | |
239 | gfc_symbol *sym; | |
240 | ||
7b901ac4 | 241 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
242 | |
243 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 244 | return var_list (new_var); |
294fbfc8 | 245 | |
7b901ac4 | 246 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
247 | if (m != MATCH_YES) |
248 | return m; | |
249 | ||
7b901ac4 | 250 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 251 | |
f37e928c DK |
252 | /* Symbol should already have an associated type. */ |
253 | if (gfc_check_symbol_typed (sym, gfc_current_ns, | |
254 | false, gfc_current_locus) == FAILURE) | |
255 | return MATCH_ERROR; | |
256 | ||
636dff67 SK |
257 | if (!sym->attr.function && gfc_current_ns->parent |
258 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 259 | { |
4075a94e | 260 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
e25a0da3 | 261 | "statement at %C", sym->name); |
294fbfc8 TS |
262 | return MATCH_ERROR; |
263 | } | |
264 | ||
4075a94e | 265 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 SK |
266 | && sym->attr.in_common |
267 | && gfc_notify_std (GFC_STD_GNU, "Extension: initialization of " | |
268 | "common block variable '%s' in DATA statement at %C", | |
269 | sym->name) == FAILURE) | |
4075a94e | 270 | return MATCH_ERROR; |
294fbfc8 | 271 | |
7b901ac4 | 272 | if (gfc_add_data (&sym->attr, sym->name, &new_var->expr->where) == FAILURE) |
294fbfc8 TS |
273 | return MATCH_ERROR; |
274 | ||
275 | return MATCH_YES; | |
276 | } | |
277 | ||
278 | ||
279 | /* Match the top-level list of data variables. */ | |
280 | ||
281 | static match | |
636dff67 | 282 | top_var_list (gfc_data *d) |
294fbfc8 | 283 | { |
7b901ac4 | 284 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
285 | match m; |
286 | ||
287 | tail = NULL; | |
288 | ||
289 | for (;;) | |
290 | { | |
291 | m = var_element (&var); | |
292 | if (m == MATCH_NO) | |
293 | goto syntax; | |
294 | if (m == MATCH_ERROR) | |
295 | return MATCH_ERROR; | |
296 | ||
7b901ac4 KG |
297 | new_var = gfc_get_data_variable (); |
298 | *new_var = var; | |
294fbfc8 TS |
299 | |
300 | if (tail == NULL) | |
7b901ac4 | 301 | d->var = new_var; |
294fbfc8 | 302 | else |
7b901ac4 | 303 | tail->next = new_var; |
294fbfc8 | 304 | |
7b901ac4 | 305 | tail = new_var; |
294fbfc8 TS |
306 | |
307 | if (gfc_match_char ('/') == MATCH_YES) | |
308 | break; | |
309 | if (gfc_match_char (',') != MATCH_YES) | |
310 | goto syntax; | |
311 | } | |
312 | ||
313 | return MATCH_YES; | |
314 | ||
315 | syntax: | |
316 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 317 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
318 | return MATCH_ERROR; |
319 | } | |
320 | ||
321 | ||
322 | static match | |
636dff67 | 323 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
324 | { |
325 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
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 | { | |
cede9502 | 494 | free (newdata); |
294fbfc8 TS |
495 | return m; |
496 | } | |
497 | ||
498 | if (gfc_pure (NULL)) | |
499 | { | |
500 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 501 | free (newdata); |
294fbfc8 TS |
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 | { | |
cede9502 | 511 | free (newdata); |
ed0e3607 AL |
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 | ||
2e8d9212 | 1063 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1064 | { |
2e8d9212 TB |
1065 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1066 | "and the VALUE attribute because procedure '%s' " | |
1067 | "is BIND(C)", sym->name, &(sym->declared_at), | |
a8b3b0b6 CR |
1068 | sym->ns->proc_name->name); |
1069 | retval = FAILURE; | |
1070 | } | |
2e8d9212 TB |
1071 | else if (sym->attr.optional == 1 |
1072 | && gfc_notify_std (GFC_STD_F2008_TR, "TR29113: Variable '%s' " | |
1073 | "at %L with OPTIONAL attribute in " | |
1074 | "procedure '%s' which is BIND(C)", | |
1075 | sym->name, &(sym->declared_at), | |
1076 | sym->ns->proc_name->name) | |
1077 | == FAILURE) | |
1078 | retval = FAILURE; | |
a8b3b0b6 CR |
1079 | |
1080 | /* Make sure that if it has the dimension attribute, that it is | |
1081 | either assumed size or explicit shape. */ | |
1082 | if (sym->as != NULL) | |
1083 | { | |
1084 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
1085 | { | |
1086 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
1087 | "argument to the procedure '%s' at %L because " | |
1088 | "the procedure is BIND(C)", sym->name, | |
1089 | &(sym->declared_at), sym->ns->proc_name->name, | |
1090 | &(sym->ns->proc_name->declared_at)); | |
1091 | retval = FAILURE; | |
1092 | } | |
1093 | ||
1094 | if (sym->as->type == AS_DEFERRED) | |
1095 | { | |
1096 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
1097 | "argument to the procedure '%s' at %L because " | |
1098 | "the procedure is BIND(C)", sym->name, | |
1099 | &(sym->declared_at), sym->ns->proc_name->name, | |
1100 | &(sym->ns->proc_name->declared_at)); | |
1101 | retval = FAILURE; | |
1102 | } | |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | return retval; | |
1108 | } | |
1109 | ||
1110 | ||
cf2b3c22 | 1111 | |
a8b3b0b6 | 1112 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1113 | |
17b1d2a0 | 1114 | static gfc_try |
e69afb29 | 1115 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1116 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1117 | { |
1118 | symbol_attribute attr; | |
1119 | gfc_symbol *sym; | |
1120 | ||
9e35b386 | 1121 | if (gfc_get_symbol (name, NULL, &sym)) |
6de9cd9a DN |
1122 | return FAILURE; |
1123 | ||
66e4ab31 | 1124 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1125 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1126 | && (sym->attr.implicit_type == 0 |
1127 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
6de9cd9a DN |
1128 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
1129 | return FAILURE; | |
1130 | ||
1131 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1132 | { |
1133 | sym->ts.u.cl = cl; | |
1134 | sym->ts.deferred = cl_deferred; | |
1135 | } | |
6de9cd9a DN |
1136 | |
1137 | /* Add dimension attribute if present. */ | |
1138 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
1139 | return FAILURE; | |
1140 | *as = NULL; | |
1141 | ||
1142 | /* Add attribute to symbol. The copy is so that we can reset the | |
1143 | dimension attribute. */ | |
1144 | attr = current_attr; | |
1145 | attr.dimension = 0; | |
be59db2d | 1146 | attr.codimension = 0; |
6de9cd9a DN |
1147 | |
1148 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
1149 | return FAILURE; | |
1150 | ||
a8b3b0b6 CR |
1151 | /* Finish any work that may need to be done for the binding label, |
1152 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1153 | is made, and before the symbol name (for data decls), so the | |
1154 | current_ts is holding the binding label, or nothing if the | |
1155 | name= attr wasn't given. Therefore, test here if we're dealing | |
1156 | with a bind(c) and make sure the binding label is set correctly. */ | |
1157 | if (sym->attr.is_bind_c == 1) | |
1158 | { | |
1159 | if (sym->binding_label[0] == '\0') | |
1160 | { | |
ad4a2f64 TB |
1161 | /* Set the binding label and verify that if a NAME= was specified |
1162 | then only one identifier was in the entity-decl-list. */ | |
1163 | if (set_binding_label (sym->binding_label, sym->name, | |
1164 | num_idents_on_line) == FAILURE) | |
a8b3b0b6 CR |
1165 | return FAILURE; |
1166 | } | |
1167 | } | |
1168 | ||
1169 | /* See if we know we're in a common block, and if it's a bind(c) | |
1170 | common then we need to make sure we're an interoperable type. */ | |
1171 | if (sym->attr.in_common == 1) | |
1172 | { | |
1173 | /* Test the common block object. */ | |
1174 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1175 | && sym->ts.is_c_interop != 1) | |
1176 | { | |
1177 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1178 | "must be declared with a C interoperable " | |
1179 | "kind since common block '%s' is BIND(C)", | |
1180 | sym->name, sym->common_block->name, | |
1181 | sym->common_block->name); | |
1182 | gfc_clear_error (); | |
1183 | } | |
1184 | } | |
1185 | ||
9a3db5a3 PT |
1186 | sym->attr.implied_index = 0; |
1187 | ||
528622fd | 1188 | if (sym->ts.type == BT_CLASS) |
96d9b22c | 1189 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
cf2b3c22 | 1190 | |
6de9cd9a DN |
1191 | return SUCCESS; |
1192 | } | |
1193 | ||
636dff67 | 1194 | |
df7cc9b5 | 1195 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1196 | truncated. If we're inside an array constructor without a typespec, we |
1197 | additionally check that all elements have the same length; check_len -1 | |
1198 | means no checking. */ | |
df7cc9b5 FW |
1199 | |
1200 | void | |
d2848082 | 1201 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1202 | { |
00660189 | 1203 | gfc_char_t *s; |
df7cc9b5 FW |
1204 | int slen; |
1205 | ||
1206 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1207 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1208 | |
1209 | slen = expr->value.character.length; | |
1210 | if (len != slen) | |
1211 | { | |
00660189 FXC |
1212 | s = gfc_get_wide_string (len + 1); |
1213 | memcpy (s, expr->value.character.string, | |
1214 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1215 | if (len > slen) |
00660189 | 1216 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d PT |
1217 | |
1218 | if (gfc_option.warn_character_truncation && slen > len) | |
1219 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1220 | "(%d/%d)", &expr->where, slen, len); | |
1221 | ||
1222 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1223 | initializers. */ | |
d2848082 DK |
1224 | if (check_len != -1 && slen != check_len |
1225 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1226 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1227 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1228 | &expr->where, slen, check_len); |
2220652d | 1229 | |
150675a8 | 1230 | s[len] = '\0'; |
cede9502 | 1231 | free (expr->value.character.string); |
df7cc9b5 FW |
1232 | expr->value.character.string = s; |
1233 | expr->value.character.length = len; | |
1234 | } | |
1235 | } | |
6de9cd9a | 1236 | |
25d8f0a2 | 1237 | |
d51347f9 | 1238 | /* Function to create and update the enumerator history |
25d8f0a2 | 1239 | using the information passed as arguments. |
d51347f9 TB |
1240 | Pointer "max_enum" is also updated, to point to |
1241 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1242 | |
1243 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1244 | INIT points to its enumerator value. */ |
25d8f0a2 | 1245 | |
d51347f9 | 1246 | static void |
636dff67 | 1247 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1248 | { |
1249 | enumerator_history *new_enum_history; | |
1250 | gcc_assert (sym != NULL && init != NULL); | |
1251 | ||
ece3f663 | 1252 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1253 | |
1254 | new_enum_history->sym = sym; | |
1255 | new_enum_history->initializer = init; | |
1256 | new_enum_history->next = NULL; | |
1257 | ||
1258 | if (enum_history == NULL) | |
1259 | { | |
1260 | enum_history = new_enum_history; | |
1261 | max_enum = enum_history; | |
1262 | } | |
1263 | else | |
1264 | { | |
1265 | new_enum_history->next = enum_history; | |
1266 | enum_history = new_enum_history; | |
1267 | ||
d51347f9 | 1268 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1269 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1270 | max_enum = new_enum_history; |
25d8f0a2 TS |
1271 | } |
1272 | } | |
1273 | ||
1274 | ||
d51347f9 | 1275 | /* Function to free enum kind history. */ |
25d8f0a2 | 1276 | |
d51347f9 | 1277 | void |
636dff67 | 1278 | gfc_free_enum_history (void) |
25d8f0a2 | 1279 | { |
d51347f9 TB |
1280 | enumerator_history *current = enum_history; |
1281 | enumerator_history *next; | |
25d8f0a2 TS |
1282 | |
1283 | while (current != NULL) | |
1284 | { | |
1285 | next = current->next; | |
cede9502 | 1286 | free (current); |
25d8f0a2 TS |
1287 | current = next; |
1288 | } | |
1289 | max_enum = NULL; | |
1290 | enum_history = NULL; | |
1291 | } | |
1292 | ||
1293 | ||
6de9cd9a DN |
1294 | /* Function called by variable_decl() that adds an initialization |
1295 | expression to a symbol. */ | |
1296 | ||
17b1d2a0 | 1297 | static gfc_try |
66e4ab31 | 1298 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1299 | { |
1300 | symbol_attribute attr; | |
1301 | gfc_symbol *sym; | |
1302 | gfc_expr *init; | |
1303 | ||
1304 | init = *initp; | |
08a6b8e0 | 1305 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
1306 | return FAILURE; |
1307 | ||
1308 | attr = sym->attr; | |
1309 | ||
1310 | /* If this symbol is confirming an implicit parameter type, | |
1311 | then an initialization expression is not allowed. */ | |
1312 | if (attr.flavor == FL_PARAMETER | |
1313 | && sym->value != NULL | |
1314 | && *initp != NULL) | |
1315 | { | |
1316 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1317 | sym->name); | |
1318 | return FAILURE; | |
1319 | } | |
1320 | ||
1321 | if (init == NULL) | |
1322 | { | |
1323 | /* An initializer is required for PARAMETER declarations. */ | |
1324 | if (attr.flavor == FL_PARAMETER) | |
1325 | { | |
1326 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1327 | return FAILURE; | |
1328 | } | |
1329 | } | |
1330 | else | |
1331 | { | |
1332 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1333 | initializer. */ |
6de9cd9a DN |
1334 | if (sym->attr.data) |
1335 | { | |
636dff67 SK |
1336 | gfc_error ("Variable '%s' at %C with an initializer already " |
1337 | "appears in a DATA statement", sym->name); | |
6de9cd9a DN |
1338 | return FAILURE; |
1339 | } | |
1340 | ||
75d17889 | 1341 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1342 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1343 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1344 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
80f95228 | 1345 | && !sym->attr.proc_pointer |
6de9cd9a DN |
1346 | && gfc_check_assign_symbol (sym, init) == FAILURE) |
1347 | return FAILURE; | |
1348 | ||
bc21d315 | 1349 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1350 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1351 | { |
1352 | /* Update symbol character length according initializer. */ | |
51b128a0 PT |
1353 | if (gfc_check_assign_symbol (sym, init) == FAILURE) |
1354 | return FAILURE; | |
1355 | ||
bc21d315 | 1356 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1357 | { |
a99288e5 | 1358 | int clen; |
66e4ab31 SK |
1359 | /* If there are multiple CHARACTER variables declared on the |
1360 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1361 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1362 | |
a99288e5 PT |
1363 | if (sym->attr.flavor == FL_PARAMETER) |
1364 | { | |
1365 | if (init->expr_type == EXPR_CONSTANT) | |
1366 | { | |
1367 | clen = init->value.character.length; | |
b7e75771 JD |
1368 | sym->ts.u.cl->length |
1369 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1370 | NULL, clen); | |
a99288e5 PT |
1371 | } |
1372 | else if (init->expr_type == EXPR_ARRAY) | |
1373 | { | |
b7e75771 JD |
1374 | gfc_constructor *c; |
1375 | c = gfc_constructor_first (init->value.constructor); | |
1376 | clen = c->expr->value.character.length; | |
1377 | sym->ts.u.cl->length | |
1378 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1379 | NULL, clen); | |
a99288e5 | 1380 | } |
bc21d315 JW |
1381 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1382 | sym->ts.u.cl->length = | |
1383 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1384 | } |
df7cc9b5 FW |
1385 | } |
1386 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1387 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1388 | { |
bc21d315 | 1389 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
df7cc9b5 FW |
1390 | |
1391 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1392 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1393 | else if (init->expr_type == EXPR_ARRAY) |
1394 | { | |
b7e75771 JD |
1395 | gfc_constructor *c; |
1396 | ||
dcdc7b6c PT |
1397 | /* Build a new charlen to prevent simplification from |
1398 | deleting the length before it is resolved. */ | |
b76e28c6 | 1399 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1400 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1401 | |
b7e75771 JD |
1402 | for (c = gfc_constructor_first (init->value.constructor); |
1403 | c; c = gfc_constructor_next (c)) | |
1404 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1405 | } |
1406 | } | |
1407 | } | |
1408 | ||
f5ca06e6 DK |
1409 | /* If sym is implied-shape, set its upper bounds from init. */ |
1410 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1411 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1412 | { | |
1413 | int dim; | |
1414 | ||
1415 | if (init->rank == 0) | |
1416 | { | |
1417 | gfc_error ("Can't initialize implied-shape array at %L" | |
1418 | " with scalar", &sym->declared_at); | |
1419 | return FAILURE; | |
1420 | } | |
1421 | gcc_assert (sym->as->rank == init->rank); | |
1422 | ||
1423 | /* Shape should be present, we get an initialization expression. */ | |
1424 | gcc_assert (init->shape); | |
1425 | ||
1426 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1427 | { | |
1428 | int k; | |
1429 | gfc_expr* lower; | |
1430 | gfc_expr* e; | |
1431 | ||
1432 | lower = sym->as->lower[dim]; | |
1433 | if (lower->expr_type != EXPR_CONSTANT) | |
1434 | { | |
1435 | gfc_error ("Non-constant lower bound in implied-shape" | |
1436 | " declaration at %L", &lower->where); | |
1437 | return FAILURE; | |
1438 | } | |
1439 | ||
1440 | /* All dimensions must be without upper bound. */ | |
1441 | gcc_assert (!sym->as->upper[dim]); | |
1442 | ||
1443 | k = lower->ts.kind; | |
1444 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1445 | mpz_add (e->value.integer, | |
1446 | lower->value.integer, init->shape[dim]); | |
1447 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1448 | sym->as->upper[dim] = e; | |
1449 | } | |
1450 | ||
1451 | sym->as->type = AS_EXPLICIT; | |
1452 | } | |
1453 | ||
a8b3b0b6 CR |
1454 | /* Need to check if the expression we initialized this |
1455 | to was one of the iso_c_binding named constants. If so, | |
1456 | and we're a parameter (constant), let it be iso_c. | |
1457 | For example: | |
1458 | integer(c_int), parameter :: my_int = c_int | |
1459 | integer(my_int) :: my_int_2 | |
1460 | If we mark my_int as iso_c (since we can see it's value | |
1461 | is equal to one of the named constants), then my_int_2 | |
1462 | will be considered C interoperable. */ | |
1463 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1464 | { | |
1465 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1466 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1467 | /* attr bits needed for module files. */ | |
1468 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1469 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1470 | if (init->ts.is_iso_c) | |
1471 | sym->ts.f90_type = init->ts.f90_type; | |
1472 | } | |
b7e75771 | 1473 | |
6de9cd9a DN |
1474 | /* Add initializer. Make sure we keep the ranks sane. */ |
1475 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1476 | { |
1477 | mpz_t size; | |
1478 | gfc_expr *array; | |
a9b43781 PT |
1479 | int n; |
1480 | if (sym->attr.flavor == FL_PARAMETER | |
1481 | && init->expr_type == EXPR_CONSTANT | |
1482 | && spec_size (sym->as, &size) == SUCCESS | |
1483 | && mpz_cmp_si (size, 0) > 0) | |
1484 | { | |
b7e75771 JD |
1485 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1486 | &init->where); | |
a9b43781 | 1487 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1488 | gfc_constructor_append_expr (&array->value.constructor, |
1489 | n == 0 | |
1490 | ? init | |
1491 | : gfc_copy_expr (init), | |
1492 | &init->where); | |
1493 | ||
a9b43781 PT |
1494 | array->shape = gfc_get_shape (sym->as->rank); |
1495 | for (n = 0; n < sym->as->rank; n++) | |
1496 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1497 | ||
1498 | init = array; | |
1499 | mpz_clear (size); | |
1500 | } | |
1501 | init->rank = sym->as->rank; | |
1502 | } | |
6de9cd9a DN |
1503 | |
1504 | sym->value = init; | |
ef7236d2 DF |
1505 | if (sym->attr.save == SAVE_NONE) |
1506 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1507 | *initp = NULL; |
1508 | } | |
1509 | ||
1510 | return SUCCESS; | |
1511 | } | |
1512 | ||
1513 | ||
1514 | /* Function called by variable_decl() that adds a name to a structure | |
1515 | being built. */ | |
1516 | ||
17b1d2a0 | 1517 | static gfc_try |
636dff67 SK |
1518 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1519 | gfc_array_spec **as) | |
6de9cd9a DN |
1520 | { |
1521 | gfc_component *c; | |
2e23972e | 1522 | gfc_try t = SUCCESS; |
6de9cd9a | 1523 | |
619dd721 | 1524 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1525 | constructing, it must have the pointer attribute. */ |
619dd721 | 1526 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1527 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1528 | && current_attr.pointer == 0) |
1529 | { | |
1530 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1531 | return FAILURE; | |
1532 | } | |
1533 | ||
636dff67 | 1534 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1535 | { |
1536 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1537 | { | |
1538 | gfc_error ("Array component of structure at %C must have explicit " | |
1539 | "or deferred shape"); | |
1540 | return FAILURE; | |
1541 | } | |
1542 | } | |
1543 | ||
1544 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1545 | return FAILURE; | |
1546 | ||
1547 | c->ts = current_ts; | |
bc21d315 JW |
1548 | if (c->ts.type == BT_CHARACTER) |
1549 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1550 | c->attr = current_attr; |
6de9cd9a DN |
1551 | |
1552 | c->initializer = *init; | |
1553 | *init = NULL; | |
1554 | ||
1555 | c->as = *as; | |
1556 | if (c->as != NULL) | |
be59db2d TB |
1557 | { |
1558 | if (c->as->corank) | |
1559 | c->attr.codimension = 1; | |
1560 | if (c->as->rank) | |
1561 | c->attr.dimension = 1; | |
1562 | } | |
6de9cd9a DN |
1563 | *as = NULL; |
1564 | ||
28d08315 PT |
1565 | /* Should this ever get more complicated, combine with similar section |
1566 | in add_init_expr_to_sym into a separate function. */ | |
bc21d315 JW |
1567 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer && c->ts.u.cl |
1568 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) | |
28d08315 | 1569 | { |
d2848082 DK |
1570 | int len; |
1571 | ||
bc21d315 JW |
1572 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1573 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1574 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1575 | |
bc21d315 | 1576 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1577 | |
1578 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1579 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1580 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1581 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1582 | { |
b7e75771 JD |
1583 | gfc_constructor *ctor; |
1584 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1585 | |
2f4d1994 | 1586 | if (ctor) |
d2848082 | 1587 | { |
2f4d1994 | 1588 | int first_len; |
b7e75771 JD |
1589 | bool has_ts = (c->initializer->ts.u.cl |
1590 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1591 | |
1592 | /* Remember the length of the first element for checking | |
1593 | that all elements *in the constructor* have the same | |
1594 | length. This need not be the length of the LHS! */ | |
1595 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1596 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1597 | first_len = ctor->expr->value.character.length; | |
1598 | ||
b7e75771 JD |
1599 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1600 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1601 | { |
b7e75771 JD |
1602 | gfc_set_constant_character_len (len, ctor->expr, |
1603 | has_ts ? -1 : first_len); | |
1604 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1605 | } |
d2848082 | 1606 | } |
28d08315 PT |
1607 | } |
1608 | } | |
1609 | ||
6de9cd9a | 1610 | /* Check array components. */ |
d4b7d0f0 | 1611 | if (!c->attr.dimension) |
2e23972e | 1612 | goto scalar; |
6de9cd9a | 1613 | |
d4b7d0f0 | 1614 | if (c->attr.pointer) |
6de9cd9a DN |
1615 | { |
1616 | if (c->as->type != AS_DEFERRED) | |
1617 | { | |
5046aff5 PT |
1618 | gfc_error ("Pointer array component of structure at %C must have a " |
1619 | "deferred shape"); | |
2e23972e | 1620 | t = FAILURE; |
5046aff5 PT |
1621 | } |
1622 | } | |
d4b7d0f0 | 1623 | else if (c->attr.allocatable) |
5046aff5 PT |
1624 | { |
1625 | if (c->as->type != AS_DEFERRED) | |
1626 | { | |
1627 | gfc_error ("Allocatable component of structure at %C must have a " | |
1628 | "deferred shape"); | |
2e23972e | 1629 | t = FAILURE; |
6de9cd9a DN |
1630 | } |
1631 | } | |
1632 | else | |
1633 | { | |
1634 | if (c->as->type != AS_EXPLICIT) | |
1635 | { | |
636dff67 SK |
1636 | gfc_error ("Array component of structure at %C must have an " |
1637 | "explicit shape"); | |
2e23972e | 1638 | t = FAILURE; |
6de9cd9a DN |
1639 | } |
1640 | } | |
1641 | ||
2e23972e JW |
1642 | scalar: |
1643 | if (c->ts.type == BT_CLASS) | |
17643884 JW |
1644 | { |
1645 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1646 | || (!c->ts.u.derived->components | |
1647 | && !c->ts.u.derived->attr.zero_comp); | |
96d9b22c | 1648 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
17643884 JW |
1649 | } |
1650 | ||
2e23972e | 1651 | return t; |
6de9cd9a DN |
1652 | } |
1653 | ||
1654 | ||
1655 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1656 | ||
1657 | match | |
636dff67 | 1658 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1659 | { |
1660 | gfc_symbol *sym; | |
6de9cd9a DN |
1661 | match m; |
1662 | ||
1663 | m = gfc_match (" null ( )"); | |
1664 | if (m != MATCH_YES) | |
1665 | return m; | |
1666 | ||
1667 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1668 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1669 | { | |
1670 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1671 | return MATCH_ERROR; | |
1672 | } | |
1673 | ||
1674 | gfc_intrinsic_symbol (sym); | |
1675 | ||
1676 | if (sym->attr.proc != PROC_INTRINSIC | |
231b2fcc TS |
1677 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1678 | sym->name, NULL) == FAILURE | |
1679 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
6de9cd9a DN |
1680 | return MATCH_ERROR; |
1681 | ||
b7e75771 | 1682 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a DN |
1683 | |
1684 | return MATCH_YES; | |
1685 | } | |
1686 | ||
1687 | ||
80f95228 JW |
1688 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1689 | ||
1690 | static match | |
1691 | match_pointer_init (gfc_expr **init, int procptr) | |
1692 | { | |
1693 | match m; | |
1694 | ||
1695 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1696 | { | |
1697 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1698 | "a PURE procedure"); | |
1699 | return MATCH_ERROR; | |
1700 | } | |
1701 | ||
1702 | /* Match NULL() initilization. */ | |
1703 | m = gfc_match_null (init); | |
1704 | if (m != MATCH_NO) | |
1705 | return m; | |
1706 | ||
1707 | /* Match non-NULL initialization. */ | |
837c4b78 | 1708 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1709 | gfc_matching_procptr_assignment = procptr; |
1710 | m = gfc_match_rvalue (init); | |
837c4b78 | 1711 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1712 | gfc_matching_procptr_assignment = 0; |
1713 | if (m == MATCH_ERROR) | |
1714 | return MATCH_ERROR; | |
1715 | else if (m == MATCH_NO) | |
1716 | { | |
1717 | gfc_error ("Error in pointer initialization at %C"); | |
1718 | return MATCH_ERROR; | |
1719 | } | |
1720 | ||
1721 | if (!procptr) | |
1722 | gfc_resolve_expr (*init); | |
1723 | ||
1724 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: non-NULL pointer " | |
1725 | "initialization at %C") == FAILURE) | |
1726 | return MATCH_ERROR; | |
1727 | ||
1728 | return MATCH_YES; | |
1729 | } | |
1730 | ||
1731 | ||
bb9de0c4 JW |
1732 | static gfc_try |
1733 | check_function_name (char *name) | |
1734 | { | |
1735 | /* In functions that have a RESULT variable defined, the function name always | |
1736 | refers to function calls. Therefore, the name is not allowed to appear in | |
1737 | specification statements. When checking this, be careful about | |
1738 | 'hidden' procedure pointer results ('ppr@'). */ | |
1739 | ||
1740 | if (gfc_current_state () == COMP_FUNCTION) | |
1741 | { | |
1742 | gfc_symbol *block = gfc_current_block (); | |
1743 | if (block && block->result && block->result != block | |
1744 | && strcmp (block->result->name, "ppr@") != 0 | |
1745 | && strcmp (block->name, name) == 0) | |
1746 | { | |
1747 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1748 | return FAILURE; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | return SUCCESS; | |
1753 | } | |
1754 | ||
1755 | ||
6de9cd9a DN |
1756 | /* Match a variable name with an optional initializer. When this |
1757 | subroutine is called, a variable is expected to be parsed next. | |
1758 | Depending on what is happening at the moment, updates either the | |
1759 | symbol table or the current interface. */ | |
1760 | ||
1761 | static match | |
949d5b72 | 1762 | variable_decl (int elem) |
6de9cd9a DN |
1763 | { |
1764 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1765 | gfc_expr *initializer, *char_len; | |
1766 | gfc_array_spec *as; | |
83d890b9 | 1767 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1768 | gfc_charlen *cl; |
e69afb29 | 1769 | bool cl_deferred; |
6de9cd9a DN |
1770 | locus var_locus; |
1771 | match m; | |
17b1d2a0 | 1772 | gfc_try t; |
83d890b9 | 1773 | gfc_symbol *sym; |
6de9cd9a DN |
1774 | |
1775 | initializer = NULL; | |
1776 | as = NULL; | |
83d890b9 | 1777 | cp_as = NULL; |
6de9cd9a DN |
1778 | |
1779 | /* When we get here, we've just matched a list of attributes and | |
1780 | maybe a type and a double colon. The next thing we expect to see | |
1781 | is the name of the symbol. */ | |
1782 | m = gfc_match_name (name); | |
1783 | if (m != MATCH_YES) | |
1784 | goto cleanup; | |
1785 | ||
63645982 | 1786 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1787 | |
1788 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1789 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1790 | if (m == MATCH_ERROR) |
6de9cd9a | 1791 | goto cleanup; |
25d8f0a2 | 1792 | |
6de9cd9a DN |
1793 | if (m == MATCH_NO) |
1794 | as = gfc_copy_array_spec (current_as); | |
d3a9eea2 TB |
1795 | else if (current_as) |
1796 | merge_array_spec (current_as, as, true); | |
6de9cd9a | 1797 | |
11126dc0 AL |
1798 | if (gfc_option.flag_cray_pointer) |
1799 | cp_as = gfc_copy_array_spec (as); | |
1800 | ||
f5ca06e6 DK |
1801 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1802 | determine (and check) whether it can be implied-shape. If it | |
1803 | was parsed as assumed-size, change it because PARAMETERs can not | |
1804 | be assumed-size. */ | |
1805 | if (as) | |
1806 | { | |
1807 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1808 | { | |
1809 | m = MATCH_ERROR; | |
1810 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1811 | name, &var_locus); | |
1812 | goto cleanup; | |
1813 | } | |
1814 | ||
1815 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1816 | && current_attr.flavor == FL_PARAMETER) | |
1817 | as->type = AS_IMPLIED_SHAPE; | |
1818 | ||
1819 | if (as->type == AS_IMPLIED_SHAPE | |
1820 | && gfc_notify_std (GFC_STD_F2008, | |
1821 | "Fortran 2008: Implied-shape array at %L", | |
1822 | &var_locus) == FAILURE) | |
1823 | { | |
1824 | m = MATCH_ERROR; | |
1825 | goto cleanup; | |
1826 | } | |
1827 | } | |
1828 | ||
6de9cd9a DN |
1829 | char_len = NULL; |
1830 | cl = NULL; | |
e69afb29 | 1831 | cl_deferred = false; |
6de9cd9a DN |
1832 | |
1833 | if (current_ts.type == BT_CHARACTER) | |
1834 | { | |
e69afb29 | 1835 | switch (match_char_length (&char_len, &cl_deferred)) |
6de9cd9a DN |
1836 | { |
1837 | case MATCH_YES: | |
b76e28c6 | 1838 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1839 | |
1840 | cl->length = char_len; | |
1841 | break; | |
1842 | ||
949d5b72 | 1843 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1844 | element. Also copy assumed lengths. */ |
6de9cd9a | 1845 | case MATCH_NO: |
9b21a380 | 1846 | if (elem > 1 |
bc21d315 JW |
1847 | && (current_ts.u.cl->length == NULL |
1848 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1849 | { |
b76e28c6 | 1850 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1851 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1852 | } |
1853 | else | |
bc21d315 | 1854 | cl = current_ts.u.cl; |
949d5b72 | 1855 | |
e69afb29 SK |
1856 | cl_deferred = current_ts.deferred; |
1857 | ||
6de9cd9a DN |
1858 | break; |
1859 | ||
1860 | case MATCH_ERROR: | |
1861 | goto cleanup; | |
1862 | } | |
1863 | } | |
1864 | ||
83d890b9 | 1865 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1866 | then we want to set the type & bail out. */ |
83d890b9 AL |
1867 | if (gfc_option.flag_cray_pointer) |
1868 | { | |
1869 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1870 | if (sym != NULL && sym->attr.cray_pointee) | |
1871 | { | |
1872 | sym->ts.type = current_ts.type; | |
1873 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
1874 | sym->ts.u.cl = cl; |
1875 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
1876 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1877 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 AL |
1878 | m = MATCH_YES; |
1879 | ||
1880 | /* Check to see if we have an array specification. */ | |
1881 | if (cp_as != NULL) | |
1882 | { | |
1883 | if (sym->as != NULL) | |
1884 | { | |
e25a0da3 | 1885 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1886 | gfc_free_array_spec (cp_as); |
1887 | m = MATCH_ERROR; | |
1888 | goto cleanup; | |
1889 | } | |
1890 | else | |
1891 | { | |
1892 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1893 | gfc_internal_error ("Couldn't set pointee array spec."); | |
d51347f9 | 1894 | |
83d890b9 | 1895 | /* Fix the array spec. */ |
d51347f9 | 1896 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1897 | if (m == MATCH_ERROR) |
1898 | goto cleanup; | |
1899 | } | |
d51347f9 | 1900 | } |
83d890b9 AL |
1901 | goto cleanup; |
1902 | } | |
1903 | else | |
1904 | { | |
1905 | gfc_free_array_spec (cp_as); | |
1906 | } | |
1907 | } | |
d51347f9 | 1908 | |
3070bab4 JW |
1909 | /* Procedure pointer as function result. */ |
1910 | if (gfc_current_state () == COMP_FUNCTION | |
1911 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1912 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1913 | strcpy (name, "ppr@"); | |
1914 | ||
1915 | if (gfc_current_state () == COMP_FUNCTION | |
1916 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1917 | && gfc_current_block ()->result | |
1918 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1919 | strcpy (name, "ppr@"); | |
d51347f9 | 1920 | |
6de9cd9a DN |
1921 | /* OK, we've successfully matched the declaration. Now put the |
1922 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1923 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1924 | perfectly legal: |
1925 | ||
1926 | integer, parameter :: i = huge(i) | |
1927 | ||
1928 | This is only true for parameters or variables of a basic type. | |
1929 | For components of derived types, it is not true, so we don't | |
1930 | create a symbol for those yet. If we fail to create the symbol, | |
1931 | bail out. */ | |
1932 | if (gfc_current_state () != COMP_DERIVED | |
e69afb29 | 1933 | && build_sym (name, cl, cl_deferred, &as, &var_locus) == FAILURE) |
6de9cd9a | 1934 | { |
72af9f0b PT |
1935 | m = MATCH_ERROR; |
1936 | goto cleanup; | |
1937 | } | |
1938 | ||
6133c68a TS |
1939 | /* An interface body specifies all of the procedure's |
1940 | characteristics and these shall be consistent with those | |
1941 | specified in the procedure definition, except that the interface | |
1942 | may specify a procedure that is not pure if the procedure is | |
1943 | defined to be pure(12.3.2). */ | |
d646bbce | 1944 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
636dff67 SK |
1945 | && gfc_current_ns->proc_name |
1946 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
bc21d315 | 1947 | && current_ts.u.derived->ns != gfc_current_ns) |
5a8af0b4 PT |
1948 | { |
1949 | gfc_symtree *st; | |
bc21d315 JW |
1950 | st = gfc_find_symtree (gfc_current_ns->sym_root, current_ts.u.derived->name); |
1951 | if (!(current_ts.u.derived->attr.imported | |
5a8af0b4 | 1952 | && st != NULL |
bc21d315 | 1953 | && st->n.sym == current_ts.u.derived) |
5a8af0b4 PT |
1954 | && !gfc_current_ns->has_import_set) |
1955 | { | |
1956 | gfc_error ("the type of '%s' at %C has not been declared within the " | |
1957 | "interface", name); | |
1958 | m = MATCH_ERROR; | |
1959 | goto cleanup; | |
1960 | } | |
6de9cd9a | 1961 | } |
bb9de0c4 JW |
1962 | |
1963 | if (check_function_name (name) == FAILURE) | |
6de9cd9a | 1964 | { |
6de9cd9a DN |
1965 | m = MATCH_ERROR; |
1966 | goto cleanup; | |
1967 | } | |
1968 | ||
294fbfc8 TS |
1969 | /* We allow old-style initializations of the form |
1970 | integer i /2/, j(4) /3*3, 1/ | |
1971 | (if no colon has been seen). These are different from data | |
1972 | statements in that initializers are only allowed to apply to the | |
1973 | variable immediately preceding, i.e. | |
1974 | integer i, j /1, 2/ | |
1975 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1976 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
1977 | |
1978 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1979 | { | |
1980 | if (gfc_notify_std (GFC_STD_GNU, "Extension: Old-style " | |
1981 | "initialization at %C") == FAILURE) | |
1982 | return MATCH_ERROR; | |
d51347f9 | 1983 | |
294fbfc8 TS |
1984 | return match_old_style_init (name); |
1985 | } | |
1986 | ||
6de9cd9a DN |
1987 | /* The double colon must be present in order to have initializers. |
1988 | Otherwise the statement is ambiguous with an assignment statement. */ | |
1989 | if (colon_seen) | |
1990 | { | |
1991 | if (gfc_match (" =>") == MATCH_YES) | |
1992 | { | |
6de9cd9a DN |
1993 | if (!current_attr.pointer) |
1994 | { | |
1995 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
1996 | m = MATCH_ERROR; | |
1997 | goto cleanup; | |
1998 | } | |
1999 | ||
80f95228 | 2000 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2001 | if (m != MATCH_YES) |
2002 | goto cleanup; | |
6de9cd9a DN |
2003 | } |
2004 | else if (gfc_match_char ('=') == MATCH_YES) | |
2005 | { | |
2006 | if (current_attr.pointer) | |
2007 | { | |
636dff67 SK |
2008 | gfc_error ("Pointer initialization at %C requires '=>', " |
2009 | "not '='"); | |
6de9cd9a DN |
2010 | m = MATCH_ERROR; |
2011 | goto cleanup; | |
2012 | } | |
2013 | ||
2014 | m = gfc_match_init_expr (&initializer); | |
2015 | if (m == MATCH_NO) | |
2016 | { | |
2017 | gfc_error ("Expected an initialization expression at %C"); | |
2018 | m = MATCH_ERROR; | |
2019 | } | |
2020 | ||
ade20620 TB |
2021 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2022 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2023 | { |
636dff67 SK |
2024 | gfc_error ("Initialization of variable at %C is not allowed in " |
2025 | "a PURE procedure"); | |
6de9cd9a DN |
2026 | m = MATCH_ERROR; |
2027 | } | |
2028 | ||
2029 | if (m != MATCH_YES) | |
2030 | goto cleanup; | |
2031 | } | |
cb44ab82 VL |
2032 | } |
2033 | ||
5046aff5 PT |
2034 | if (initializer != NULL && current_attr.allocatable |
2035 | && gfc_current_state () == COMP_DERIVED) | |
2036 | { | |
636dff67 SK |
2037 | gfc_error ("Initialization of allocatable component at %C is not " |
2038 | "allowed"); | |
5046aff5 PT |
2039 | m = MATCH_ERROR; |
2040 | goto cleanup; | |
2041 | } | |
2042 | ||
54b4ba60 | 2043 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2044 | NULL here, because we sometimes also need to check if a |
2045 | declaration *must* have an initialization expression. */ | |
2046 | if (gfc_current_state () != COMP_DERIVED) | |
2047 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2048 | else | |
54b4ba60 | 2049 | { |
5046aff5 | 2050 | if (current_ts.type == BT_DERIVED |
636dff67 | 2051 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2052 | initializer = gfc_default_initializer (¤t_ts); |
2053 | t = build_struct (name, cl, &initializer, &as); | |
2054 | } | |
6de9cd9a DN |
2055 | |
2056 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
2057 | ||
2058 | cleanup: | |
2059 | /* Free stuff up and return. */ | |
2060 | gfc_free_expr (initializer); | |
2061 | gfc_free_array_spec (as); | |
2062 | ||
2063 | return m; | |
2064 | } | |
2065 | ||
2066 | ||
b2b81a3f BM |
2067 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2068 | This assumes that the byte size is equal to the kind number for | |
2069 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2070 | |
2071 | match | |
636dff67 | 2072 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2073 | { |
2074 | match m; | |
5cf54585 | 2075 | int original_kind; |
6de9cd9a DN |
2076 | |
2077 | if (gfc_match_char ('*') != MATCH_YES) | |
2078 | return MATCH_NO; | |
2079 | ||
5cf54585 | 2080 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2081 | if (m != MATCH_YES) |
2082 | return MATCH_ERROR; | |
2083 | ||
e45b3c75 ES |
2084 | original_kind = ts->kind; |
2085 | ||
6de9cd9a | 2086 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2087 | if (ts->type == BT_COMPLEX) |
2088 | { | |
2089 | if (ts->kind % 2) | |
636dff67 SK |
2090 | { |
2091 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2092 | gfc_basic_typename (ts->type), original_kind); | |
2093 | return MATCH_ERROR; | |
2094 | } | |
e45b3c75 ES |
2095 | ts->kind /= 2; |
2096 | } | |
6de9cd9a | 2097 | |
e7a2d5fb | 2098 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2099 | { |
e45b3c75 | 2100 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2101 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2102 | return MATCH_ERROR; |
2103 | } | |
2104 | ||
df8652dc SK |
2105 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
2106 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
2107 | return MATCH_ERROR; | |
2108 | ||
6de9cd9a DN |
2109 | return MATCH_YES; |
2110 | } | |
2111 | ||
2112 | ||
2113 | /* Match a kind specification. Since kinds are generally optional, we | |
2114 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2115 | string is found, then we know we have an error. */ | |
2116 | ||
2117 | match | |
e2d29968 | 2118 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2119 | { |
e2d29968 | 2120 | locus where, loc; |
6de9cd9a DN |
2121 | gfc_expr *e; |
2122 | match m, n; | |
96ee3a4a | 2123 | char c; |
6de9cd9a DN |
2124 | const char *msg; |
2125 | ||
2126 | m = MATCH_NO; | |
e2d29968 | 2127 | n = MATCH_YES; |
6de9cd9a DN |
2128 | e = NULL; |
2129 | ||
e2d29968 PT |
2130 | where = loc = gfc_current_locus; |
2131 | ||
2132 | if (kind_expr_only) | |
2133 | goto kind_expr; | |
6de9cd9a DN |
2134 | |
2135 | if (gfc_match_char ('(') == MATCH_NO) | |
2136 | return MATCH_NO; | |
2137 | ||
2138 | /* Also gobbles optional text. */ | |
2139 | if (gfc_match (" kind = ") == MATCH_YES) | |
2140 | m = MATCH_ERROR; | |
2141 | ||
e2d29968 PT |
2142 | loc = gfc_current_locus; |
2143 | ||
2144 | kind_expr: | |
6de9cd9a | 2145 | n = gfc_match_init_expr (&e); |
e2d29968 | 2146 | |
6de9cd9a | 2147 | if (n != MATCH_YES) |
e2d29968 | 2148 | { |
1c8bcdf7 | 2149 | if (gfc_matching_function) |
e2d29968 | 2150 | { |
1c8bcdf7 PT |
2151 | /* The function kind expression might include use associated or |
2152 | imported parameters and try again after the specification | |
2153 | expressions..... */ | |
e2d29968 PT |
2154 | if (gfc_match_char (')') != MATCH_YES) |
2155 | { | |
2156 | gfc_error ("Missing right parenthesis at %C"); | |
2157 | m = MATCH_ERROR; | |
2158 | goto no_match; | |
2159 | } | |
2160 | ||
2161 | gfc_free_expr (e); | |
e2d29968 PT |
2162 | gfc_undo_symbols (); |
2163 | return MATCH_YES; | |
2164 | } | |
2165 | else | |
2166 | { | |
2167 | /* ....or else, the match is real. */ | |
2168 | if (n == MATCH_NO) | |
2169 | gfc_error ("Expected initialization expression at %C"); | |
2170 | if (n != MATCH_YES) | |
2171 | return MATCH_ERROR; | |
2172 | } | |
2173 | } | |
6de9cd9a DN |
2174 | |
2175 | if (e->rank != 0) | |
2176 | { | |
2177 | gfc_error ("Expected scalar initialization expression at %C"); | |
2178 | m = MATCH_ERROR; | |
2179 | goto no_match; | |
2180 | } | |
2181 | ||
2182 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2183 | |
6de9cd9a DN |
2184 | if (msg != NULL) |
2185 | { | |
2186 | gfc_error (msg); | |
2187 | m = MATCH_ERROR; | |
2188 | goto no_match; | |
2189 | } | |
2190 | ||
a8b3b0b6 CR |
2191 | /* Before throwing away the expression, let's see if we had a |
2192 | C interoperable kind (and store the fact). */ | |
2193 | if (e->ts.is_c_interop == 1) | |
2194 | { | |
2195 | /* Mark this as c interoperable if being declared with one | |
2196 | of the named constants from iso_c_binding. */ | |
2197 | ts->is_c_interop = e->ts.is_iso_c; | |
2198 | ts->f90_type = e->ts.f90_type; | |
2199 | } | |
2200 | ||
6de9cd9a DN |
2201 | gfc_free_expr (e); |
2202 | e = NULL; | |
2203 | ||
a8b3b0b6 CR |
2204 | /* Ignore errors to this point, if we've gotten here. This means |
2205 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2206 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2207 | { |
2208 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2209 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2210 | gfc_current_locus = where; |
2211 | return MATCH_ERROR; | |
6de9cd9a | 2212 | } |
96ee3a4a | 2213 | |
2ec855f1 TB |
2214 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2215 | if, e.g., c_double is used for COMPLEX as the standard | |
2216 | explicitly says that the kind type parameter for complex and real | |
2217 | variable is the same, i.e. c_float == c_float_complex. */ | |
2218 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2219 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2220 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
2be51762 TB |
2221 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2222 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2223 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2224 | |
96ee3a4a | 2225 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2226 | if ((c = gfc_next_ascii_char ()) != ')' |
2227 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2228 | { |
96ee3a4a TB |
2229 | if (ts->type == BT_CHARACTER) |
2230 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2231 | else | |
2232 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2233 | m = MATCH_ERROR; |
6de9cd9a | 2234 | } |
a8b3b0b6 CR |
2235 | else |
2236 | /* All tests passed. */ | |
2237 | m = MATCH_YES; | |
6de9cd9a | 2238 | |
a8b3b0b6 CR |
2239 | if(m == MATCH_ERROR) |
2240 | gfc_current_locus = where; | |
2241 | ||
2242 | /* Return what we know from the test(s). */ | |
2243 | return m; | |
6de9cd9a DN |
2244 | |
2245 | no_match: | |
2246 | gfc_free_expr (e); | |
63645982 | 2247 | gfc_current_locus = where; |
6de9cd9a DN |
2248 | return m; |
2249 | } | |
2250 | ||
2251 | ||
187de1ed FXC |
2252 | static match |
2253 | match_char_kind (int * kind, int * is_iso_c) | |
2254 | { | |
2255 | locus where; | |
2256 | gfc_expr *e; | |
2257 | match m, n; | |
2258 | const char *msg; | |
2259 | ||
2260 | m = MATCH_NO; | |
2261 | e = NULL; | |
2262 | where = gfc_current_locus; | |
2263 | ||
2264 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2265 | |
1c8bcdf7 | 2266 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2267 | { |
1c8bcdf7 PT |
2268 | /* The expression might include use-associated or imported |
2269 | parameters and try again after the specification | |
2270 | expressions. */ | |
96ee3a4a | 2271 | gfc_free_expr (e); |
96ee3a4a TB |
2272 | gfc_undo_symbols (); |
2273 | return MATCH_YES; | |
2274 | } | |
2275 | ||
187de1ed FXC |
2276 | if (n == MATCH_NO) |
2277 | gfc_error ("Expected initialization expression at %C"); | |
2278 | if (n != MATCH_YES) | |
2279 | return MATCH_ERROR; | |
2280 | ||
2281 | if (e->rank != 0) | |
2282 | { | |
2283 | gfc_error ("Expected scalar initialization expression at %C"); | |
2284 | m = MATCH_ERROR; | |
2285 | goto no_match; | |
2286 | } | |
2287 | ||
2288 | msg = gfc_extract_int (e, kind); | |
2289 | *is_iso_c = e->ts.is_iso_c; | |
2290 | if (msg != NULL) | |
2291 | { | |
2292 | gfc_error (msg); | |
2293 | m = MATCH_ERROR; | |
2294 | goto no_match; | |
2295 | } | |
2296 | ||
2297 | gfc_free_expr (e); | |
2298 | ||
2299 | /* Ignore errors to this point, if we've gotten here. This means | |
2300 | we ignore the m=MATCH_ERROR from above. */ | |
2301 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2302 | { | |
2303 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2304 | m = MATCH_ERROR; | |
2305 | } | |
2306 | else | |
2307 | /* All tests passed. */ | |
2308 | m = MATCH_YES; | |
2309 | ||
2310 | if (m == MATCH_ERROR) | |
2311 | gfc_current_locus = where; | |
2312 | ||
2313 | /* Return what we know from the test(s). */ | |
2314 | return m; | |
2315 | ||
2316 | no_match: | |
2317 | gfc_free_expr (e); | |
2318 | gfc_current_locus = where; | |
2319 | return m; | |
2320 | } | |
2321 | ||
8234e5e0 | 2322 | |
6de9cd9a DN |
2323 | /* Match the various kind/length specifications in a CHARACTER |
2324 | declaration. We don't return MATCH_NO. */ | |
2325 | ||
8234e5e0 SK |
2326 | match |
2327 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2328 | { |
187de1ed | 2329 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2330 | gfc_charlen *cl; |
2331 | gfc_expr *len; | |
2332 | match m; | |
e69afb29 | 2333 | bool deferred; |
187de1ed | 2334 | |
6de9cd9a DN |
2335 | len = NULL; |
2336 | seen_length = 0; | |
187de1ed FXC |
2337 | kind = 0; |
2338 | is_iso_c = 0; | |
e69afb29 | 2339 | deferred = false; |
6de9cd9a DN |
2340 | |
2341 | /* Try the old-style specification first. */ | |
2342 | old_char_selector = 0; | |
2343 | ||
e69afb29 | 2344 | m = match_char_length (&len, &deferred); |
6de9cd9a DN |
2345 | if (m != MATCH_NO) |
2346 | { | |
2347 | if (m == MATCH_YES) | |
2348 | old_char_selector = 1; | |
2349 | seen_length = 1; | |
2350 | goto done; | |
2351 | } | |
2352 | ||
2353 | m = gfc_match_char ('('); | |
2354 | if (m != MATCH_YES) | |
2355 | { | |
a8b3b0b6 | 2356 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2357 | goto done; |
2358 | } | |
2359 | ||
a8b3b0b6 | 2360 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2361 | if (gfc_match (" kind =") == MATCH_YES) |
2362 | { | |
187de1ed | 2363 | m = match_char_kind (&kind, &is_iso_c); |
a8b3b0b6 | 2364 | |
6de9cd9a DN |
2365 | if (m == MATCH_ERROR) |
2366 | goto done; | |
2367 | if (m == MATCH_NO) | |
2368 | goto syntax; | |
2369 | ||
2370 | if (gfc_match (" , len =") == MATCH_NO) | |
2371 | goto rparen; | |
2372 | ||
e69afb29 | 2373 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2374 | if (m == MATCH_NO) |
2375 | goto syntax; | |
2376 | if (m == MATCH_ERROR) | |
2377 | goto done; | |
2378 | seen_length = 1; | |
2379 | ||
2380 | goto rparen; | |
2381 | } | |
2382 | ||
66e4ab31 | 2383 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2384 | if (gfc_match (" len =") == MATCH_YES) |
2385 | { | |
e69afb29 | 2386 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2387 | if (m == MATCH_NO) |
2388 | goto syntax; | |
2389 | if (m == MATCH_ERROR) | |
2390 | goto done; | |
2391 | seen_length = 1; | |
2392 | ||
2393 | if (gfc_match_char (')') == MATCH_YES) | |
2394 | goto done; | |
2395 | ||
2396 | if (gfc_match (" , kind =") != MATCH_YES) | |
2397 | goto syntax; | |
2398 | ||
187de1ed FXC |
2399 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2400 | goto done; | |
6de9cd9a DN |
2401 | |
2402 | goto rparen; | |
2403 | } | |
2404 | ||
66e4ab31 | 2405 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2406 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2407 | if (m == MATCH_NO) |
2408 | goto syntax; | |
2409 | if (m == MATCH_ERROR) | |
2410 | goto done; | |
2411 | seen_length = 1; | |
2412 | ||
2413 | m = gfc_match_char (')'); | |
2414 | if (m == MATCH_YES) | |
2415 | goto done; | |
2416 | ||
2417 | if (gfc_match_char (',') != MATCH_YES) | |
2418 | goto syntax; | |
2419 | ||
a8b3b0b6 | 2420 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2421 | |
187de1ed | 2422 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2423 | if (m == MATCH_ERROR) |
2424 | goto done; | |
2425 | if (m == MATCH_NO) | |
2426 | goto syntax; | |
2427 | ||
2428 | rparen: | |
2429 | /* Require a right-paren at this point. */ | |
2430 | m = gfc_match_char (')'); | |
2431 | if (m == MATCH_YES) | |
2432 | goto done; | |
2433 | ||
2434 | syntax: | |
2435 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2436 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2437 | gfc_free_expr (len); |
2438 | return m; | |
6de9cd9a DN |
2439 | |
2440 | done: | |
a99d95a2 PT |
2441 | /* Deal with character functions after USE and IMPORT statements. */ |
2442 | if (gfc_matching_function) | |
1c8bcdf7 | 2443 | { |
a99d95a2 | 2444 | gfc_free_expr (len); |
1c8bcdf7 PT |
2445 | gfc_undo_symbols (); |
2446 | return MATCH_YES; | |
2447 | } | |
2448 | ||
6de9cd9a DN |
2449 | if (m != MATCH_YES) |
2450 | { | |
2451 | gfc_free_expr (len); | |
2452 | return m; | |
2453 | } | |
2454 | ||
2455 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2456 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2457 | |
2458 | if (seen_length == 0) | |
b7e75771 | 2459 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2460 | else |
5cd09fac | 2461 | cl->length = len; |
6de9cd9a | 2462 | |
bc21d315 | 2463 | ts->u.cl = cl; |
187de1ed | 2464 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2465 | ts->deferred = deferred; |
6de9cd9a | 2466 | |
a8b3b0b6 CR |
2467 | /* We have to know if it was a c interoperable kind so we can |
2468 | do accurate type checking of bind(c) procs, etc. */ | |
187de1ed FXC |
2469 | if (kind != 0) |
2470 | /* Mark this as c interoperable if being declared with one | |
2471 | of the named constants from iso_c_binding. */ | |
2472 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2473 | else if (len != NULL) |
187de1ed FXC |
2474 | /* Here, we might have parsed something such as: character(c_char) |
2475 | In this case, the parsing code above grabs the c_char when | |
2476 | looking for the length (line 1690, roughly). it's the last | |
2477 | testcase for parsing the kind params of a character variable. | |
2478 | However, it's not actually the length. this seems like it | |
2479 | could be an error. | |
2480 | To see if the user used a C interop kind, test the expr | |
2481 | of the so called length, and see if it's C interoperable. */ | |
2482 | ts->is_c_interop = len->ts.is_iso_c; | |
a8b3b0b6 | 2483 | |
6de9cd9a DN |
2484 | return MATCH_YES; |
2485 | } | |
2486 | ||
2487 | ||
e74f1cc8 JW |
2488 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2489 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2490 | IMPLICIT statements. |
2491 | ||
d51347f9 | 2492 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2493 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2494 | statement correctly. */ |
2495 | ||
e2d29968 | 2496 | match |
e74f1cc8 | 2497 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2498 | { |
2499 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2500 | gfc_symbol *sym; | |
2501 | match m; | |
8fc541d3 | 2502 | char c; |
0fb56814 | 2503 | bool seen_deferred_kind, matched_type; |
6de9cd9a | 2504 | |
1c8bcdf7 PT |
2505 | /* A belt and braces check that the typespec is correctly being treated |
2506 | as a deferred characteristic association. */ | |
2507 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2508 | && (gfc_current_block ()->result->ts.kind == -1) |
2509 | && (ts->kind == -1); | |
6de9cd9a | 2510 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2511 | if (seen_deferred_kind) |
2512 | ts->kind = -1; | |
6de9cd9a | 2513 | |
a8b3b0b6 CR |
2514 | /* Clear the current binding label, in case one is given. */ |
2515 | curr_binding_label[0] = '\0'; | |
2516 | ||
5f700e6d AL |
2517 | if (gfc_match (" byte") == MATCH_YES) |
2518 | { | |
0b3624f6 | 2519 | if (gfc_notify_std (GFC_STD_GNU, "Extension: BYTE type at %C") |
5f700e6d AL |
2520 | == FAILURE) |
2521 | return MATCH_ERROR; | |
2522 | ||
2523 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2524 | { | |
2525 | gfc_error ("BYTE type used at %C " | |
2526 | "is not available on the target machine"); | |
2527 | return MATCH_ERROR; | |
2528 | } | |
d51347f9 | 2529 | |
5f700e6d AL |
2530 | ts->type = BT_INTEGER; |
2531 | ts->kind = 1; | |
2532 | return MATCH_YES; | |
2533 | } | |
2534 | ||
0fb56814 TB |
2535 | |
2536 | m = gfc_match (" type ( %n", name); | |
2537 | matched_type = (m == MATCH_YES); | |
2538 | ||
2539 | if ((matched_type && strcmp ("integer", name) == 0) | |
2540 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2541 | { |
2542 | ts->type = BT_INTEGER; | |
9d64df18 | 2543 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2544 | goto get_kind; |
2545 | } | |
2546 | ||
0fb56814 TB |
2547 | if ((matched_type && strcmp ("character", name) == 0) |
2548 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2549 | { |
0fb56814 TB |
2550 | if (matched_type |
2551 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2552 | "intrinsic-type-spec at %C") == FAILURE) | |
2553 | return MATCH_ERROR; | |
2554 | ||
6de9cd9a | 2555 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2556 | if (implicit_flag == 0) |
0fb56814 | 2557 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2558 | else |
0fb56814 TB |
2559 | m = MATCH_YES; |
2560 | ||
2561 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2562 | m = MATCH_ERROR; | |
2563 | ||
2564 | return m; | |
6de9cd9a DN |
2565 | } |
2566 | ||
0fb56814 TB |
2567 | if ((matched_type && strcmp ("real", name) == 0) |
2568 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2569 | { |
2570 | ts->type = BT_REAL; | |
9d64df18 | 2571 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2572 | goto get_kind; |
2573 | } | |
2574 | ||
0fb56814 TB |
2575 | if ((matched_type |
2576 | && (strcmp ("doubleprecision", name) == 0 | |
2577 | || (strcmp ("double", name) == 0 | |
2578 | && gfc_match (" precision") == MATCH_YES))) | |
2579 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2580 | { |
0fb56814 TB |
2581 | if (matched_type |
2582 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2583 | "intrinsic-type-spec at %C") == FAILURE) | |
2584 | return MATCH_ERROR; | |
2585 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2586 | return MATCH_ERROR; | |
2587 | ||
6de9cd9a | 2588 | ts->type = BT_REAL; |
9d64df18 | 2589 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2590 | return MATCH_YES; |
2591 | } | |
2592 | ||
0fb56814 TB |
2593 | if ((matched_type && strcmp ("complex", name) == 0) |
2594 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2595 | { |
2596 | ts->type = BT_COMPLEX; | |
9d64df18 | 2597 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2598 | goto get_kind; |
2599 | } | |
2600 | ||
0fb56814 TB |
2601 | if ((matched_type |
2602 | && (strcmp ("doublecomplex", name) == 0 | |
2603 | || (strcmp ("double", name) == 0 | |
2604 | && gfc_match (" complex") == MATCH_YES))) | |
2605 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2606 | { |
0fb56814 TB |
2607 | if (gfc_notify_std (GFC_STD_GNU, "Extension: DOUBLE COMPLEX at %C") |
2608 | == FAILURE) | |
2609 | return MATCH_ERROR; | |
2610 | ||
2611 | if (matched_type | |
2612 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2613 | "intrinsic-type-spec at %C") == FAILURE) | |
2614 | return MATCH_ERROR; | |
2615 | ||
2616 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2617 | return MATCH_ERROR; |
2618 | ||
6de9cd9a | 2619 | ts->type = BT_COMPLEX; |
9d64df18 | 2620 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2621 | return MATCH_YES; |
2622 | } | |
2623 | ||
0fb56814 TB |
2624 | if ((matched_type && strcmp ("logical", name) == 0) |
2625 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2626 | { |
2627 | ts->type = BT_LOGICAL; | |
9d64df18 | 2628 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2629 | goto get_kind; |
2630 | } | |
2631 | ||
0fb56814 TB |
2632 | if (matched_type) |
2633 | m = gfc_match_char (')'); | |
2634 | ||
cf2b3c22 TB |
2635 | if (m == MATCH_YES) |
2636 | ts->type = BT_DERIVED; | |
2637 | else | |
727e8544 | 2638 | { |
528622fd JW |
2639 | /* Match CLASS declarations. */ |
2640 | m = gfc_match (" class ( * )"); | |
2641 | if (m == MATCH_ERROR) | |
2642 | return MATCH_ERROR; | |
2643 | else if (m == MATCH_YES) | |
2644 | { | |
2645 | gfc_fatal_error ("Unlimited polymorphism at %C not yet supported"); | |
2646 | return MATCH_ERROR; | |
2647 | } | |
2648 | ||
727e8544 JW |
2649 | m = gfc_match (" class ( %n )", name); |
2650 | if (m != MATCH_YES) | |
2651 | return m; | |
cf2b3c22 | 2652 | ts->type = BT_CLASS; |
727e8544 | 2653 | |
e74f1cc8 JW |
2654 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: CLASS statement at %C") |
2655 | == FAILURE) | |
2656 | return MATCH_ERROR; | |
727e8544 | 2657 | } |
6de9cd9a | 2658 | |
1c8bcdf7 PT |
2659 | /* Defer association of the derived type until the end of the |
2660 | specification block. However, if the derived type can be | |
2661 | found, add it to the typespec. */ | |
2662 | if (gfc_matching_function) | |
e2d29968 | 2663 | { |
bc21d315 | 2664 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2665 | if (gfc_current_state () != COMP_INTERFACE |
2666 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
bc21d315 | 2667 | ts->u.derived = sym; |
e2d29968 PT |
2668 | return MATCH_YES; |
2669 | } | |
2670 | ||
2671 | /* Search for the name but allow the components to be defined later. If | |
2672 | type = -1, this typespec has been seen in a function declaration but | |
1c8bcdf7 PT |
2673 | the type could not be accessed at that point. */ |
2674 | sym = NULL; | |
e2d29968 | 2675 | if (ts->kind != -1 && gfc_get_ha_symbol (name, &sym)) |
6de9cd9a DN |
2676 | { |
2677 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2678 | return MATCH_ERROR; | |
2679 | } | |
e2d29968 PT |
2680 | else if (ts->kind == -1) |
2681 | { | |
1c8bcdf7 PT |
2682 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2683 | || gfc_current_ns->has_import_set; | |
2684 | if (gfc_find_symbol (name, NULL, iface, &sym)) | |
e2d29968 PT |
2685 | { |
2686 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2687 | return MATCH_ERROR; | |
2688 | } | |
2689 | ||
1c8bcdf7 | 2690 | ts->kind = 0; |
e2d29968 PT |
2691 | if (sym == NULL) |
2692 | return MATCH_NO; | |
2693 | } | |
6de9cd9a DN |
2694 | |
2695 | if (sym->attr.flavor != FL_DERIVED | |
231b2fcc | 2696 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
2697 | return MATCH_ERROR; |
2698 | ||
1c8bcdf7 | 2699 | gfc_set_sym_referenced (sym); |
bc21d315 | 2700 | ts->u.derived = sym; |
6de9cd9a DN |
2701 | |
2702 | return MATCH_YES; | |
2703 | ||
2704 | get_kind: | |
0fb56814 TB |
2705 | if (matched_type |
2706 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2707 | "intrinsic-type-spec at %C") == FAILURE) | |
2708 | return MATCH_ERROR; | |
2709 | ||
6de9cd9a DN |
2710 | /* For all types except double, derived and character, look for an |
2711 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2712 | if (implicit_flag == 1) |
0fb56814 TB |
2713 | { |
2714 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2715 | return MATCH_ERROR; | |
2716 | ||
2717 | return MATCH_YES; | |
2718 | } | |
6de9cd9a | 2719 | |
0ff0dfbf TS |
2720 | if (gfc_current_form == FORM_FREE) |
2721 | { | |
0b3624f6 SK |
2722 | c = gfc_peek_ascii_char (); |
2723 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 2724 | && c != ':' && c != ',') |
0fb56814 TB |
2725 | { |
2726 | if (matched_type && c == ')') | |
2727 | { | |
2728 | gfc_next_ascii_char (); | |
2729 | return MATCH_YES; | |
2730 | } | |
2731 | return MATCH_NO; | |
2732 | } | |
0ff0dfbf TS |
2733 | } |
2734 | ||
e2d29968 | 2735 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a DN |
2736 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2737 | m = gfc_match_old_kind_spec (ts); | |
2738 | ||
0fb56814 TB |
2739 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2740 | return MATCH_ERROR; | |
2741 | ||
1c8bcdf7 PT |
2742 | /* Defer association of the KIND expression of function results |
2743 | until after USE and IMPORT statements. */ | |
2744 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2745 | || gfc_matching_function) | |
2746 | return MATCH_YES; | |
2747 | ||
6de9cd9a DN |
2748 | if (m == MATCH_NO) |
2749 | m = MATCH_YES; /* No kind specifier found. */ | |
2750 | ||
2751 | return m; | |
2752 | } | |
2753 | ||
2754 | ||
e5ddaa24 TS |
2755 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2756 | already matched in parse.c, or we would not end up here in the | |
2757 | first place. So the only thing we need to check, is if there is | |
2758 | trailing garbage. If not, the match is successful. */ | |
2759 | ||
2760 | match | |
2761 | gfc_match_implicit_none (void) | |
2762 | { | |
e5ddaa24 TS |
2763 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2764 | } | |
2765 | ||
2766 | ||
2767 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2768 | ||
2769 | static match | |
1107b970 | 2770 | match_implicit_range (void) |
e5ddaa24 | 2771 | { |
8fc541d3 FXC |
2772 | char c, c1, c2; |
2773 | int inner; | |
e5ddaa24 TS |
2774 | locus cur_loc; |
2775 | ||
2776 | cur_loc = gfc_current_locus; | |
2777 | ||
2778 | gfc_gobble_whitespace (); | |
8fc541d3 | 2779 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2780 | if (c != '(') |
2781 | { | |
2782 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2783 | goto bad; | |
2784 | } | |
2785 | ||
2786 | inner = 1; | |
2787 | while (inner) | |
2788 | { | |
2789 | gfc_gobble_whitespace (); | |
8fc541d3 | 2790 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2791 | if (!ISALPHA (c1)) |
2792 | goto bad; | |
2793 | ||
2794 | gfc_gobble_whitespace (); | |
8fc541d3 | 2795 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2796 | |
2797 | switch (c) | |
2798 | { | |
2799 | case ')': | |
66e4ab31 | 2800 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2801 | |
2802 | case ',': | |
2803 | c2 = c1; | |
2804 | break; | |
2805 | ||
2806 | case '-': | |
2807 | gfc_gobble_whitespace (); | |
8fc541d3 | 2808 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2809 | if (!ISALPHA (c2)) |
2810 | goto bad; | |
2811 | ||
2812 | gfc_gobble_whitespace (); | |
8fc541d3 | 2813 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2814 | |
2815 | if ((c != ',') && (c != ')')) | |
2816 | goto bad; | |
2817 | if (c == ')') | |
2818 | inner = 0; | |
2819 | ||
2820 | break; | |
2821 | ||
2822 | default: | |
2823 | goto bad; | |
2824 | } | |
2825 | ||
2826 | if (c1 > c2) | |
2827 | { | |
2828 | gfc_error ("Letters must be in alphabetic order in " | |
2829 | "IMPLICIT statement at %C"); | |
2830 | goto bad; | |
2831 | } | |
2832 | ||
2833 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
2834 | implicits from this IMPLICIT statement. We do not check for |
2835 | conflicts with whatever earlier IMPLICIT statements may have | |
2836 | set. This is done when we've successfully finished matching | |
2837 | the current one. */ | |
1107b970 | 2838 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
e5ddaa24 TS |
2839 | goto bad; |
2840 | } | |
2841 | ||
2842 | return MATCH_YES; | |
2843 | ||
2844 | bad: | |
2845 | gfc_syntax_error (ST_IMPLICIT); | |
2846 | ||
2847 | gfc_current_locus = cur_loc; | |
2848 | return MATCH_ERROR; | |
2849 | } | |
2850 | ||
2851 | ||
2852 | /* Match an IMPLICIT statement, storing the types for | |
2853 | gfc_set_implicit() if the statement is accepted by the parser. | |
2854 | There is a strange looking, but legal syntactic construction | |
2855 | possible. It looks like: | |
2856 | ||
2857 | IMPLICIT INTEGER (a-b) (c-d) | |
2858 | ||
2859 | This is legal if "a-b" is a constant expression that happens to | |
2860 | equal one of the legal kinds for integers. The real problem | |
2861 | happens with an implicit specification that looks like: | |
2862 | ||
2863 | IMPLICIT INTEGER (a-b) | |
2864 | ||
2865 | In this case, a typespec matcher that is "greedy" (as most of the | |
2866 | matchers are) gobbles the character range as a kindspec, leaving | |
2867 | nothing left. We therefore have to go a bit more slowly in the | |
2868 | matching process by inhibiting the kindspec checking during | |
2869 | typespec matching and checking for a kind later. */ | |
2870 | ||
2871 | match | |
2872 | gfc_match_implicit (void) | |
2873 | { | |
2874 | gfc_typespec ts; | |
2875 | locus cur_loc; | |
8fc541d3 | 2876 | char c; |
e5ddaa24 TS |
2877 | match m; |
2878 | ||
44000dbb JD |
2879 | gfc_clear_ts (&ts); |
2880 | ||
e5ddaa24 TS |
2881 | /* We don't allow empty implicit statements. */ |
2882 | if (gfc_match_eos () == MATCH_YES) | |
2883 | { | |
2884 | gfc_error ("Empty IMPLICIT statement at %C"); | |
2885 | return MATCH_ERROR; | |
2886 | } | |
2887 | ||
e5ddaa24 TS |
2888 | do |
2889 | { | |
1107b970 PB |
2890 | /* First cleanup. */ |
2891 | gfc_clear_new_implicit (); | |
2892 | ||
e5ddaa24 | 2893 | /* A basic type is mandatory here. */ |
e74f1cc8 | 2894 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
2895 | if (m == MATCH_ERROR) |
2896 | goto error; | |
2897 | if (m == MATCH_NO) | |
2898 | goto syntax; | |
2899 | ||
2900 | cur_loc = gfc_current_locus; | |
1107b970 | 2901 | m = match_implicit_range (); |
e5ddaa24 TS |
2902 | |
2903 | if (m == MATCH_YES) | |
2904 | { | |
1107b970 | 2905 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 2906 | gfc_gobble_whitespace (); |
8fc541d3 | 2907 | c = gfc_next_ascii_char (); |
e5ddaa24 | 2908 | if ((c == '\n') || (c == ',')) |
1107b970 PB |
2909 | { |
2910 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 2911 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 2912 | { |
9d64df18 | 2913 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 2914 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
2915 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
2916 | NULL, 1); | |
1107b970 PB |
2917 | } |
2918 | ||
2919 | /* Record the Successful match. */ | |
2920 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
2921 | return MATCH_ERROR; | |
2922 | continue; | |
2923 | } | |
e5ddaa24 TS |
2924 | |
2925 | gfc_current_locus = cur_loc; | |
2926 | } | |
2927 | ||
1107b970 PB |
2928 | /* Discard the (incorrectly) matched range. */ |
2929 | gfc_clear_new_implicit (); | |
2930 | ||
2931 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
2932 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 2933 | m = gfc_match_char_spec (&ts); |
1107b970 | 2934 | else |
e5ddaa24 | 2935 | { |
e2d29968 | 2936 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 2937 | if (m == MATCH_NO) |
1107b970 PB |
2938 | { |
2939 | m = gfc_match_old_kind_spec (&ts); | |
2940 | if (m == MATCH_ERROR) | |
2941 | goto error; | |
2942 | if (m == MATCH_NO) | |
2943 | goto syntax; | |
2944 | } | |
e5ddaa24 | 2945 | } |
1107b970 PB |
2946 | if (m == MATCH_ERROR) |
2947 | goto error; | |
e5ddaa24 | 2948 | |
1107b970 | 2949 | m = match_implicit_range (); |
e5ddaa24 TS |
2950 | if (m == MATCH_ERROR) |
2951 | goto error; | |
2952 | if (m == MATCH_NO) | |
2953 | goto syntax; | |
2954 | ||
2955 | gfc_gobble_whitespace (); | |
8fc541d3 | 2956 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2957 | if ((c != '\n') && (c != ',')) |
2958 | goto syntax; | |
2959 | ||
1107b970 PB |
2960 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
2961 | return MATCH_ERROR; | |
e5ddaa24 TS |
2962 | } |
2963 | while (c == ','); | |
2964 | ||
1107b970 | 2965 | return MATCH_YES; |
e5ddaa24 TS |
2966 | |
2967 | syntax: | |
2968 | gfc_syntax_error (ST_IMPLICIT); | |
2969 | ||
2970 | error: | |
2971 | return MATCH_ERROR; | |
2972 | } | |
2973 | ||
66e4ab31 | 2974 | |
8998be20 TB |
2975 | match |
2976 | gfc_match_import (void) | |
2977 | { | |
2978 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2979 | match m; | |
2980 | gfc_symbol *sym; | |
2981 | gfc_symtree *st; | |
2982 | ||
66e4ab31 SK |
2983 | if (gfc_current_ns->proc_name == NULL |
2984 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
2985 | { |
2986 | gfc_error ("IMPORT statement at %C only permitted in " | |
2987 | "an INTERFACE body"); | |
2988 | return MATCH_ERROR; | |
2989 | } | |
2990 | ||
636dff67 | 2991 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: IMPORT statement at %C") |
8998be20 TB |
2992 | == FAILURE) |
2993 | return MATCH_ERROR; | |
2994 | ||
2995 | if (gfc_match_eos () == MATCH_YES) | |
2996 | { | |
2997 | /* All host variables should be imported. */ | |
2998 | gfc_current_ns->has_import_set = 1; | |
2999 | return MATCH_YES; | |
3000 | } | |
3001 | ||
3002 | if (gfc_match (" ::") == MATCH_YES) | |
3003 | { | |
3004 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3005 | { |
3006 | gfc_error ("Expecting list of named entities at %C"); | |
3007 | return MATCH_ERROR; | |
3008 | } | |
8998be20 TB |
3009 | } |
3010 | ||
3011 | for(;;) | |
3012 | { | |
2e8d9212 | 3013 | sym = NULL; |
8998be20 TB |
3014 | m = gfc_match (" %n", name); |
3015 | switch (m) | |
3016 | { | |
3017 | case MATCH_YES: | |
36d3fb4c | 3018 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3019 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
3020 | { |
3021 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3022 | return MATCH_ERROR; | |
3023 | } | |
4e2cf5f5 | 3024 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3025 | && gfc_find_symbol (name, |
3026 | gfc_current_ns->proc_name->ns->parent, | |
3027 | 1, &sym)) | |
636dff67 SK |
3028 | { |
3029 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3030 | return MATCH_ERROR; | |
3031 | } | |
3032 | ||
3033 | if (sym == NULL) | |
3034 | { | |
3035 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3036 | "at %C - does not exist.", name); | |
3037 | return MATCH_ERROR; | |
3038 | } | |
3039 | ||
d51347f9 | 3040 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
636dff67 SK |
3041 | { |
3042 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3043 | "at %C.", name); | |
3044 | goto next_item; | |
3045 | } | |
3046 | ||
bc2a4733 | 3047 | st = gfc_new_symtree (&gfc_current_ns->sym_root, sym->name); |
636dff67 SK |
3048 | st->n.sym = sym; |
3049 | sym->refs++; | |
5a8af0b4 | 3050 | sym->attr.imported = 1; |
8998be20 TB |
3051 | |
3052 | goto next_item; | |
3053 | ||
3054 | case MATCH_NO: | |
3055 | break; | |
3056 | ||
3057 | case MATCH_ERROR: | |
3058 | return MATCH_ERROR; | |
3059 | } | |
3060 | ||
3061 | next_item: | |
3062 | if (gfc_match_eos () == MATCH_YES) | |
3063 | break; | |
3064 | if (gfc_match_char (',') != MATCH_YES) | |
3065 | goto syntax; | |
3066 | } | |
3067 | ||
3068 | return MATCH_YES; | |
3069 | ||
3070 | syntax: | |
3071 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3072 | return MATCH_ERROR; | |
3073 | } | |
e5ddaa24 | 3074 | |
66e4ab31 | 3075 | |
f2449db4 RS |
3076 | /* A minimal implementation of gfc_match without whitespace, escape |
3077 | characters or variable arguments. Returns true if the next | |
3078 | characters match the TARGET template exactly. */ | |
3079 | ||
3080 | static bool | |
3081 | match_string_p (const char *target) | |
3082 | { | |
3083 | const char *p; | |
3084 | ||
3085 | for (p = target; *p; p++) | |
8fc541d3 | 3086 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3087 | return false; |
3088 | return true; | |
3089 | } | |
3090 | ||
6de9cd9a DN |
3091 | /* Matches an attribute specification including array specs. If |
3092 | successful, leaves the variables current_attr and current_as | |
3093 | holding the specification. Also sets the colon_seen variable for | |
3094 | later use by matchers associated with initializations. | |
3095 | ||
3096 | This subroutine is a little tricky in the sense that we don't know | |
3097 | if we really have an attr-spec until we hit the double colon. | |
3098 | Until that time, we can only return MATCH_NO. This forces us to | |
3099 | check for duplicate specification at this level. */ | |
3100 | ||
3101 | static match | |
3102 | match_attr_spec (void) | |
3103 | { | |
6de9cd9a DN |
3104 | /* Modifiers that can exist in a type statement. */ |
3105 | typedef enum | |
3106 | { GFC_DECL_BEGIN = 0, | |
3107 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3108 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3109 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3110 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3111 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3112 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
6de9cd9a DN |
3113 | } |
3114 | decl_types; | |
3115 | ||
3116 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3117 | #define NUM_DECL GFC_DECL_END | |
3118 | ||
6de9cd9a DN |
3119 | locus start, seen_at[NUM_DECL]; |
3120 | int seen[NUM_DECL]; | |
09639a83 | 3121 | unsigned int d; |
6de9cd9a DN |
3122 | const char *attr; |
3123 | match m; | |
17b1d2a0 | 3124 | gfc_try t; |
6de9cd9a DN |
3125 | |
3126 | gfc_clear_attr (¤t_attr); | |
63645982 | 3127 | start = gfc_current_locus; |
6de9cd9a DN |
3128 | |
3129 | current_as = NULL; | |
3130 | colon_seen = 0; | |
3131 | ||
3132 | /* See if we get all of the keywords up to the final double colon. */ | |
3133 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3134 | seen[d] = 0; | |
3135 | ||
3136 | for (;;) | |
3137 | { | |
8fc541d3 | 3138 | char ch; |
a8b3b0b6 | 3139 | |
f2449db4 RS |
3140 | d = DECL_NONE; |
3141 | gfc_gobble_whitespace (); | |
3142 | ||
8fc541d3 | 3143 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3144 | if (ch == ':') |
3145 | { | |
3146 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3147 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3148 | break; |
3149 | } | |
3150 | else if (ch == ',') | |
a8b3b0b6 | 3151 | { |
a8b3b0b6 | 3152 | gfc_gobble_whitespace (); |
8fc541d3 | 3153 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3154 | { |
f2449db4 | 3155 | case 'a': |
1eee5628 TB |
3156 | gfc_next_ascii_char (); |
3157 | switch (gfc_next_ascii_char ()) | |
3158 | { | |
3159 | case 'l': | |
3160 | if (match_string_p ("locatable")) | |
3161 | { | |
3162 | /* Matched "allocatable". */ | |
3163 | d = DECL_ALLOCATABLE; | |
3164 | } | |
3165 | break; | |
3166 | ||
3167 | case 's': | |
3168 | if (match_string_p ("ynchronous")) | |
3169 | { | |
3170 | /* Matched "asynchronous". */ | |
3171 | d = DECL_ASYNCHRONOUS; | |
3172 | } | |
3173 | break; | |
3174 | } | |
fe4e525c | 3175 | break; |
f2449db4 RS |
3176 | |
3177 | case 'b': | |
a8b3b0b6 | 3178 | /* Try and match the bind(c). */ |
1eabf70a | 3179 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3180 | if (m == MATCH_YES) |
a8b3b0b6 | 3181 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3182 | else if (m == MATCH_ERROR) |
3183 | goto cleanup; | |
f2449db4 RS |
3184 | break; |
3185 | ||
be59db2d | 3186 | case 'c': |
fe4e525c TB |
3187 | gfc_next_ascii_char (); |
3188 | if ('o' != gfc_next_ascii_char ()) | |
3189 | break; | |
3190 | switch (gfc_next_ascii_char ()) | |
3191 | { | |
3192 | case 'd': | |
3193 | if (match_string_p ("imension")) | |
3194 | { | |
3195 | d = DECL_CODIMENSION; | |
3196 | break; | |
3197 | } | |
3198 | case 'n': | |
3199 | if (match_string_p ("tiguous")) | |
3200 | { | |
3201 | d = DECL_CONTIGUOUS; | |
3202 | break; | |
3203 | } | |
3204 | } | |
be59db2d TB |
3205 | break; |
3206 | ||
f2449db4 RS |
3207 | case 'd': |
3208 | if (match_string_p ("dimension")) | |
3209 | d = DECL_DIMENSION; | |
3210 | break; | |
3211 | ||
3212 | case 'e': | |
3213 | if (match_string_p ("external")) | |
3214 | d = DECL_EXTERNAL; | |
3215 | break; | |
3216 | ||
3217 | case 'i': | |
3218 | if (match_string_p ("int")) | |
3219 | { | |
8fc541d3 | 3220 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3221 | if (ch == 'e') |
3222 | { | |
3223 | if (match_string_p ("nt")) | |
3224 | { | |
3225 | /* Matched "intent". */ | |
3226 | /* TODO: Call match_intent_spec from here. */ | |
3227 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3228 | d = DECL_INOUT; | |
3229 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3230 | d = DECL_IN; | |
3231 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3232 | d = DECL_OUT; | |
3233 | } | |
3234 | } | |
3235 | else if (ch == 'r') | |
3236 | { | |
3237 | if (match_string_p ("insic")) | |
3238 | { | |
3239 | /* Matched "intrinsic". */ | |
3240 | d = DECL_INTRINSIC; | |
3241 | } | |
3242 | } | |
3243 | } | |
3244 | break; | |
3245 | ||
3246 | case 'o': | |
3247 | if (match_string_p ("optional")) | |
3248 | d = DECL_OPTIONAL; | |
3249 | break; | |
3250 | ||
3251 | case 'p': | |
8fc541d3 FXC |
3252 | gfc_next_ascii_char (); |
3253 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3254 | { |
3255 | case 'a': | |
3256 | if (match_string_p ("rameter")) | |
3257 | { | |
3258 | /* Matched "parameter". */ | |
3259 | d = DECL_PARAMETER; | |
3260 | } | |
3261 | break; | |
3262 | ||
3263 | case 'o': | |
3264 | if (match_string_p ("inter")) | |
3265 | { | |
3266 | /* Matched "pointer". */ | |
3267 | d = DECL_POINTER; | |
3268 | } | |
3269 | break; | |
3270 | ||
3271 | case 'r': | |
8fc541d3 | 3272 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3273 | if (ch == 'i') |
3274 | { | |
3275 | if (match_string_p ("vate")) | |
3276 | { | |
3277 | /* Matched "private". */ | |
3278 | d = DECL_PRIVATE; | |
3279 | } | |
3280 | } | |
3281 | else if (ch == 'o') | |
3282 | { | |
3283 | if (match_string_p ("tected")) | |
3284 | { | |
3285 | /* Matched "protected". */ | |
3286 | d = DECL_PROTECTED; | |
3287 | } | |
3288 | } | |
3289 | break; | |
3290 | ||
3291 | case 'u': | |
3292 | if (match_string_p ("blic")) | |
3293 | { | |
3294 | /* Matched "public". */ | |
3295 | d = DECL_PUBLIC; | |
3296 | } | |
3297 | break; | |
3298 | } | |
3299 | break; | |
3300 | ||
3301 | case 's': | |
3302 | if (match_string_p ("save")) | |
3303 | d = DECL_SAVE; | |
3304 | break; | |
3305 | ||
3306 | case 't': | |
3307 | if (match_string_p ("target")) | |
3308 | d = DECL_TARGET; | |
3309 | break; | |
3310 | ||
3311 | case 'v': | |
8fc541d3 FXC |
3312 | gfc_next_ascii_char (); |
3313 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3314 | if (ch == 'a') |
3315 | { | |
3316 | if (match_string_p ("lue")) | |
3317 | { | |
3318 | /* Matched "value". */ | |
3319 | d = DECL_VALUE; | |
3320 | } | |
3321 | } | |
3322 | else if (ch == 'o') | |
3323 | { | |
3324 | if (match_string_p ("latile")) | |
3325 | { | |
3326 | /* Matched "volatile". */ | |
3327 | d = DECL_VOLATILE; | |
3328 | } | |
3329 | } | |
3330 | break; | |
a8b3b0b6 CR |
3331 | } |
3332 | } | |
d468bcdb | 3333 | |
f2449db4 RS |
3334 | /* No double colon and no recognizable decl_type, so assume that |
3335 | we've been looking at something else the whole time. */ | |
3336 | if (d == DECL_NONE) | |
3337 | { | |
3338 | m = MATCH_NO; | |
3339 | goto cleanup; | |
3340 | } | |
d51347f9 | 3341 | |
acb388a0 JD |
3342 | /* Check to make sure any parens are paired up correctly. */ |
3343 | if (gfc_match_parens () == MATCH_ERROR) | |
3344 | { | |
3345 | m = MATCH_ERROR; | |
3346 | goto cleanup; | |
3347 | } | |
3348 | ||
6de9cd9a | 3349 | seen[d]++; |
63645982 | 3350 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3351 | |
d3a9eea2 | 3352 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3353 | { |
d3a9eea2 | 3354 | gfc_array_spec *as = NULL; |
6de9cd9a | 3355 | |
d3a9eea2 TB |
3356 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3357 | d == DECL_CODIMENSION); | |
3358 | ||
3359 | if (current_as == NULL) | |
3360 | current_as = as; | |
3361 | else if (m == MATCH_YES) | |
6de9cd9a | 3362 | { |
d3a9eea2 | 3363 | merge_array_spec (as, current_as, false); |
cede9502 | 3364 | free (as); |
6de9cd9a DN |
3365 | } |
3366 | ||
be59db2d TB |
3367 | if (m == MATCH_NO) |
3368 | { | |
d3a9eea2 TB |
3369 | if (d == DECL_CODIMENSION) |
3370 | gfc_error ("Missing codimension specification at %C"); | |
3371 | else | |
3372 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3373 | m = MATCH_ERROR; |
3374 | } | |
3375 | ||
3376 | if (m == MATCH_ERROR) | |
3377 | goto cleanup; | |
3378 | } | |
6de9cd9a DN |
3379 | } |
3380 | ||
6de9cd9a DN |
3381 | /* Since we've seen a double colon, we have to be looking at an |
3382 | attr-spec. This means that we can now issue errors. */ | |
3383 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3384 | if (seen[d] > 1) | |
3385 | { | |
3386 | switch (d) | |
3387 | { | |
3388 | case DECL_ALLOCATABLE: | |
3389 | attr = "ALLOCATABLE"; | |
3390 | break; | |
1eee5628 TB |
3391 | case DECL_ASYNCHRONOUS: |
3392 | attr = "ASYNCHRONOUS"; | |
3393 | break; | |
be59db2d TB |
3394 | case DECL_CODIMENSION: |
3395 | attr = "CODIMENSION"; | |
3396 | break; | |
fe4e525c TB |
3397 | case DECL_CONTIGUOUS: |
3398 | attr = "CONTIGUOUS"; | |
3399 | break; | |
6de9cd9a DN |
3400 | case DECL_DIMENSION: |
3401 | attr = "DIMENSION"; | |
3402 | break; | |
3403 | case DECL_EXTERNAL: | |
3404 | attr = "EXTERNAL"; | |
3405 | break; | |
3406 | case DECL_IN: | |
3407 | attr = "INTENT (IN)"; | |
3408 | break; | |
3409 | case DECL_OUT: | |
3410 | attr = "INTENT (OUT)"; | |
3411 | break; | |
3412 | case DECL_INOUT: | |
3413 | attr = "INTENT (IN OUT)"; | |
3414 | break; | |
3415 | case DECL_INTRINSIC: | |
3416 | attr = "INTRINSIC"; | |
3417 | break; | |
3418 | case DECL_OPTIONAL: | |
3419 | attr = "OPTIONAL"; | |
3420 | break; | |
3421 | case DECL_PARAMETER: | |
3422 | attr = "PARAMETER"; | |
3423 | break; | |
3424 | case DECL_POINTER: | |
3425 | attr = "POINTER"; | |
3426 | break; | |
ee7e677f TB |
3427 | case DECL_PROTECTED: |
3428 | attr = "PROTECTED"; | |
3429 | break; | |
6de9cd9a DN |
3430 | case DECL_PRIVATE: |
3431 | attr = "PRIVATE"; | |
3432 | break; | |
3433 | case DECL_PUBLIC: | |
3434 | attr = "PUBLIC"; | |
3435 | break; | |
3436 | case DECL_SAVE: | |
3437 | attr = "SAVE"; | |
3438 | break; | |
3439 | case DECL_TARGET: | |
3440 | attr = "TARGET"; | |
3441 | break; | |
a8b3b0b6 CR |
3442 | case DECL_IS_BIND_C: |
3443 | attr = "IS_BIND_C"; | |
3444 | break; | |
3445 | case DECL_VALUE: | |
3446 | attr = "VALUE"; | |
3447 | break; | |
775e6c3a TB |
3448 | case DECL_VOLATILE: |
3449 | attr = "VOLATILE"; | |
3450 | break; | |
6de9cd9a | 3451 | default: |
66e4ab31 | 3452 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3453 | } |
3454 | ||
3455 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3456 | m = MATCH_ERROR; | |
3457 | goto cleanup; | |
3458 | } | |
3459 | ||
3460 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3461 | to the current attribute. */ | |
3462 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3463 | { | |
3464 | if (seen[d] == 0) | |
3465 | continue; | |
3466 | ||
3467 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3468 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3469 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3470 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3471 | { |
5046aff5 PT |
3472 | if (d == DECL_ALLOCATABLE) |
3473 | { | |
636dff67 SK |
3474 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ALLOCATABLE " |
3475 | "attribute at %C in a TYPE definition") | |
d51347f9 | 3476 | == FAILURE) |
5046aff5 PT |
3477 | { |
3478 | m = MATCH_ERROR; | |
3479 | goto cleanup; | |
3480 | } | |
636dff67 SK |
3481 | } |
3482 | else | |
5046aff5 PT |
3483 | { |
3484 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3485 | &seen_at[d]); |
5046aff5 PT |
3486 | m = MATCH_ERROR; |
3487 | goto cleanup; | |
3488 | } | |
6de9cd9a DN |
3489 | } |
3490 | ||
4213f93b | 3491 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3492 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3493 | { |
3494 | if (d == DECL_PRIVATE) | |
3495 | attr = "PRIVATE"; | |
3496 | else | |
3497 | attr = "PUBLIC"; | |
d51347f9 TB |
3498 | if (gfc_current_state () == COMP_DERIVED |
3499 | && gfc_state_stack->previous | |
3500 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3501 | { | |
3502 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Attribute %s " | |
3503 | "at %L in a TYPE definition", attr, | |
3504 | &seen_at[d]) | |
3505 | == FAILURE) | |
3506 | { | |
3507 | m = MATCH_ERROR; | |
3508 | goto cleanup; | |
3509 | } | |
3510 | } | |
3511 | else | |
3512 | { | |
3513 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3514 | "specification part of a module", attr, &seen_at[d]); | |
3515 | m = MATCH_ERROR; | |
3516 | goto cleanup; | |
3517 | } | |
4213f93b PT |
3518 | } |
3519 | ||
6de9cd9a DN |
3520 | switch (d) |
3521 | { | |
3522 | case DECL_ALLOCATABLE: | |
3523 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3524 | break; | |
3525 | ||
1eee5628 TB |
3526 | case DECL_ASYNCHRONOUS: |
3527 | if (gfc_notify_std (GFC_STD_F2003, | |
3528 | "Fortran 2003: ASYNCHRONOUS attribute at %C") | |
3529 | == FAILURE) | |
3530 | t = FAILURE; | |
3531 | else | |
3532 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3533 | break; | |
3534 | ||
be59db2d TB |
3535 | case DECL_CODIMENSION: |
3536 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3537 | break; | |
3538 | ||
fe4e525c TB |
3539 | case DECL_CONTIGUOUS: |
3540 | if (gfc_notify_std (GFC_STD_F2008, | |
3541 | "Fortran 2008: CONTIGUOUS attribute at %C") | |
3542 | == FAILURE) | |
3543 | t = FAILURE; | |
3544 | else | |
3545 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3546 | break; | |
3547 | ||
6de9cd9a | 3548 | case DECL_DIMENSION: |
231b2fcc | 3549 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3550 | break; |
3551 | ||
3552 | case DECL_EXTERNAL: | |
3553 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3554 | break; | |
3555 | ||
3556 | case DECL_IN: | |
3557 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3558 | break; | |
3559 | ||
3560 | case DECL_OUT: | |
3561 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3562 | break; | |
3563 | ||
3564 | case DECL_INOUT: | |
3565 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3566 | break; | |
3567 | ||
3568 | case DECL_INTRINSIC: | |
3569 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3570 | break; | |
3571 | ||
3572 | case DECL_OPTIONAL: | |
3573 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3574 | break; | |
3575 | ||
3576 | case DECL_PARAMETER: | |
231b2fcc | 3577 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3578 | break; |
3579 | ||
3580 | case DECL_POINTER: | |
3581 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3582 | break; | |
3583 | ||
ee7e677f TB |
3584 | case DECL_PROTECTED: |
3585 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3586 | { | |
3587 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3588 | "part of a module"); | |
3589 | t = FAILURE; | |
3590 | break; | |
3591 | } | |
3592 | ||
636dff67 SK |
3593 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED " |
3594 | "attribute at %C") | |
ee7e677f TB |
3595 | == FAILURE) |
3596 | t = FAILURE; | |
3597 | else | |
3598 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3599 | break; | |
3600 | ||
6de9cd9a | 3601 | case DECL_PRIVATE: |
231b2fcc TS |
3602 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3603 | &seen_at[d]); | |
6de9cd9a DN |
3604 | break; |
3605 | ||
3606 | case DECL_PUBLIC: | |
231b2fcc TS |
3607 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3608 | &seen_at[d]); | |
6de9cd9a DN |
3609 | break; |
3610 | ||
3611 | case DECL_SAVE: | |
80f95228 | 3612 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3613 | break; |
3614 | ||
3615 | case DECL_TARGET: | |
3616 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3617 | break; | |
3618 | ||
a8b3b0b6 CR |
3619 | case DECL_IS_BIND_C: |
3620 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3621 | break; | |
3622 | ||
06469efd | 3623 | case DECL_VALUE: |
636dff67 SK |
3624 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE attribute " |
3625 | "at %C") | |
06469efd PT |
3626 | == FAILURE) |
3627 | t = FAILURE; | |
3628 | else | |
3629 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3630 | break; | |
3631 | ||
775e6c3a TB |
3632 | case DECL_VOLATILE: |
3633 | if (gfc_notify_std (GFC_STD_F2003, | |
636dff67 | 3634 | "Fortran 2003: VOLATILE attribute at %C") |
775e6c3a TB |
3635 | == FAILURE) |
3636 | t = FAILURE; | |
3637 | else | |
3638 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3639 | break; | |
3640 | ||
6de9cd9a DN |
3641 | default: |
3642 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3643 | } | |
3644 | ||
3645 | if (t == FAILURE) | |
3646 | { | |
3647 | m = MATCH_ERROR; | |
3648 | goto cleanup; | |
3649 | } | |
3650 | } | |
3651 | ||
80f95228 JW |
3652 | /* Module variables implicitly have the SAVE attribute. */ |
3653 | if (gfc_current_state () == COMP_MODULE && !current_attr.save) | |
3654 | current_attr.save = SAVE_IMPLICIT; | |
3655 | ||
6de9cd9a DN |
3656 | colon_seen = 1; |
3657 | return MATCH_YES; | |
3658 | ||
3659 | cleanup: | |
63645982 | 3660 | gfc_current_locus = start; |
6de9cd9a DN |
3661 | gfc_free_array_spec (current_as); |
3662 | current_as = NULL; | |
3663 | return m; | |
3664 | } | |
3665 | ||
3666 | ||
a8b3b0b6 CR |
3667 | /* Set the binding label, dest_label, either with the binding label |
3668 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3669 | will be the symbol name in all lower case, as required by the draft | |
3670 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3671 | there is more than one argument (num_idents), it is an error. */ | |
3672 | ||
17b1d2a0 | 3673 | gfc_try |
a8b3b0b6 CR |
3674 | set_binding_label (char *dest_label, const char *sym_name, int num_idents) |
3675 | { | |
ad4a2f64 | 3676 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 3677 | { |
ad4a2f64 TB |
3678 | gfc_error ("Multiple identifiers provided with " |
3679 | "single NAME= specifier at %C"); | |
3680 | return FAILURE; | |
3681 | } | |
a8b3b0b6 | 3682 | |
ad4a2f64 TB |
3683 | if (curr_binding_label[0] != '\0') |
3684 | { | |
a8b3b0b6 | 3685 | /* Binding label given; store in temp holder til have sym. */ |
c5b5a17a | 3686 | strcpy (dest_label, curr_binding_label); |
a8b3b0b6 CR |
3687 | } |
3688 | else | |
3689 | { | |
3690 | /* No binding label given, and the NAME= specifier did not exist, | |
3691 | which means there was no NAME="". */ | |
3692 | if (sym_name != NULL && has_name_equals == 0) | |
c5b5a17a | 3693 | strcpy (dest_label, sym_name); |
a8b3b0b6 CR |
3694 | } |
3695 | ||
3696 | return SUCCESS; | |
3697 | } | |
3698 | ||
3699 | ||
3700 | /* Set the status of the given common block as being BIND(C) or not, | |
3701 | depending on the given parameter, is_bind_c. */ | |
3702 | ||
3703 | void | |
3704 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3705 | { | |
3706 | com_block->is_bind_c = is_bind_c; | |
3707 | return; | |
3708 | } | |
3709 | ||
3710 | ||
3711 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3712 | ||
17b1d2a0 | 3713 | gfc_try |
2ec855f1 | 3714 | verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 3715 | { |
bc21d315 | 3716 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 TB |
3717 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
3718 | ? SUCCESS : FAILURE; | |
a8b3b0b6 CR |
3719 | else if (ts->is_c_interop != 1) |
3720 | return FAILURE; | |
3721 | ||
3722 | return SUCCESS; | |
3723 | } | |
3724 | ||
3725 | ||
3726 | /* Verify that the variables of a given common block, which has been | |
3727 | defined with the attribute specifier bind(c), to be of a C | |
3728 | interoperable type. Errors will be reported here, if | |
3729 | encountered. */ | |
3730 | ||
17b1d2a0 | 3731 | gfc_try |
a8b3b0b6 CR |
3732 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3733 | { | |
3734 | gfc_symbol *curr_sym = NULL; | |
17b1d2a0 | 3735 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3736 | |
3737 | curr_sym = com_block->head; | |
3738 | ||
3739 | /* Make sure we have at least one symbol. */ | |
3740 | if (curr_sym == NULL) | |
3741 | return retval; | |
3742 | ||
3743 | /* Here we know we have a symbol, so we'll execute this loop | |
3744 | at least once. */ | |
3745 | do | |
3746 | { | |
3747 | /* The second to last param, 1, says this is in a common block. */ | |
3748 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3749 | curr_sym = curr_sym->common_next; | |
3750 | } while (curr_sym != NULL); | |
3751 | ||
3752 | return retval; | |
3753 | } | |
3754 | ||
3755 | ||
3756 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3757 | an appropriate error message is reported. */ | |
3758 | ||
17b1d2a0 | 3759 | gfc_try |
a8b3b0b6 CR |
3760 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3761 | int is_in_common, gfc_common_head *com_block) | |
3762 | { | |
8327f9c2 | 3763 | bool bind_c_function = false; |
17b1d2a0 | 3764 | gfc_try retval = SUCCESS; |
d8fa96e0 | 3765 | |
8327f9c2 TB |
3766 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3767 | bind_c_function = true; | |
3768 | ||
d8fa96e0 CR |
3769 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3770 | { | |
3771 | tmp_sym = tmp_sym->result; | |
3772 | /* Make sure it wasn't an implicitly typed result. */ | |
3773 | if (tmp_sym->attr.implicit_type) | |
3774 | { | |
3775 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3776 | "%L may not be C interoperable", tmp_sym->name, | |
3777 | &tmp_sym->declared_at); | |
3778 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3779 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3780 | tmp_sym->ts.is_c_interop = 1; | |
3781 | tmp_sym->attr.is_c_interop = 1; | |
3782 | } | |
3783 | } | |
8327f9c2 | 3784 | |
a8b3b0b6 CR |
3785 | /* Here, we know we have the bind(c) attribute, so if we have |
3786 | enough type info, then verify that it's a C interop kind. | |
3787 | The info could be in the symbol already, or possibly still in | |
3788 | the given ts (current_ts), so look in both. */ | |
3789 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
3790 | { | |
2ec855f1 | 3791 | if (verify_c_interop (&(tmp_sym->ts)) != SUCCESS) |
a8b3b0b6 CR |
3792 | { |
3793 | /* See if we're dealing with a sym in a common block or not. */ | |
3794 | if (is_in_common == 1) | |
3795 | { | |
3796 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3797 | "may not be a C interoperable " | |
3798 | "kind though common block '%s' is BIND(C)", | |
3799 | tmp_sym->name, com_block->name, | |
3800 | &(tmp_sym->declared_at), com_block->name); | |
3801 | } | |
3802 | else | |
3803 | { | |
3804 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3805 | gfc_error ("Type declaration '%s' at %L is not C " | |
3806 | "interoperable but it is BIND(C)", | |
3807 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3808 | else | |
3809 | gfc_warning ("Variable '%s' at %L " | |
3810 | "may not be a C interoperable " | |
3811 | "kind but it is bind(c)", | |
3812 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3813 | } | |
3814 | } | |
3815 | ||
3816 | /* Variables declared w/in a common block can't be bind(c) | |
3817 | since there's no way for C to see these variables, so there's | |
3818 | semantically no reason for the attribute. */ | |
3819 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
3820 | { | |
3821 | gfc_error ("Variable '%s' in common block '%s' at " | |
3822 | "%L cannot be declared with BIND(C) " | |
3823 | "since it is not a global", | |
3824 | tmp_sym->name, com_block->name, | |
3825 | &(tmp_sym->declared_at)); | |
3826 | retval = FAILURE; | |
3827 | } | |
3828 | ||
3829 | /* Scalar variables that are bind(c) can not have the pointer | |
3830 | or allocatable attributes. */ | |
3831 | if (tmp_sym->attr.is_bind_c == 1) | |
3832 | { | |
3833 | if (tmp_sym->attr.pointer == 1) | |
3834 | { | |
3835 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3836 | "POINTER and BIND(C) attributes", | |
3837 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3838 | retval = FAILURE; | |
3839 | } | |
3840 | ||
3841 | if (tmp_sym->attr.allocatable == 1) | |
3842 | { | |
3843 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3844 | "ALLOCATABLE and BIND(C) attributes", | |
3845 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3846 | retval = FAILURE; | |
3847 | } | |
3848 | ||
8327f9c2 TB |
3849 | } |
3850 | ||
3851 | /* If it is a BIND(C) function, make sure the return value is a | |
3852 | scalar value. The previous tests in this function made sure | |
3853 | the type is interoperable. */ | |
3854 | if (bind_c_function && tmp_sym->as != NULL) | |
3855 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
3856 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
3857 | ||
3858 | /* BIND(C) functions can not return a character string. */ | |
3859 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
3860 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
3861 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
3862 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
8327f9c2 | 3863 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
a8b3b0b6 CR |
3864 | "be a character string", tmp_sym->name, |
3865 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
3866 | } |
3867 | ||
3868 | /* See if the symbol has been marked as private. If it has, make sure | |
3869 | there is no binding label and warn the user if there is one. */ | |
3870 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
3871 | && tmp_sym->binding_label[0] != '\0') | |
3872 | /* Use gfc_warning_now because we won't say that the symbol fails | |
3873 | just because of this. */ | |
3874 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
3875 | "given the binding label '%s'", tmp_sym->name, | |
3876 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
3877 | ||
3878 | return retval; | |
3879 | } | |
3880 | ||
3881 | ||
3882 | /* Set the appropriate fields for a symbol that's been declared as | |
3883 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
3884 | the type is C interoperable. Errors are reported by the functions | |
3885 | used to set/test these fields. */ | |
3886 | ||
17b1d2a0 | 3887 | gfc_try |
a8b3b0b6 CR |
3888 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
3889 | { | |
17b1d2a0 | 3890 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3891 | |
3892 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
3893 | ||
3894 | /* Set the is_bind_c bit in symbol_attribute. */ | |
3895 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
3896 | ||
3897 | if (set_binding_label (tmp_sym->binding_label, tmp_sym->name, | |
3898 | num_idents) != SUCCESS) | |
3899 | return FAILURE; | |
3900 | ||
3901 | return retval; | |
3902 | } | |
3903 | ||
3904 | ||
3905 | /* Set the fields marking the given common block as BIND(C), including | |
3906 | a binding label, and report any errors encountered. */ | |
3907 | ||
17b1d2a0 | 3908 | gfc_try |
a8b3b0b6 CR |
3909 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
3910 | { | |
17b1d2a0 | 3911 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3912 | |
3913 | /* destLabel, common name, typespec (which may have binding label). */ | |
3914 | if (set_binding_label (com_block->binding_label, com_block->name, num_idents) | |
3915 | != SUCCESS) | |
3916 | return FAILURE; | |
3917 | ||
3918 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
3919 | set_com_block_bind_c (com_block, 1); | |
3920 | ||
3921 | return retval; | |
3922 | } | |
3923 | ||
3924 | ||
3925 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
3926 | attribute applies to. */ | |
3927 | ||
17b1d2a0 | 3928 | gfc_try |
a8b3b0b6 CR |
3929 | get_bind_c_idents (void) |
3930 | { | |
3931 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3932 | int num_idents = 0; | |
3933 | gfc_symbol *tmp_sym = NULL; | |
3934 | match found_id; | |
3935 | gfc_common_head *com_block = NULL; | |
3936 | ||
3937 | if (gfc_match_name (name) == MATCH_YES) | |
3938 | { | |
3939 | found_id = MATCH_YES; | |
3940 | gfc_get_ha_symbol (name, &tmp_sym); | |
3941 | } | |
3942 | else if (match_common_name (name) == MATCH_YES) | |
3943 | { | |
3944 | found_id = MATCH_YES; | |
3945 | com_block = gfc_get_common (name, 0); | |
3946 | } | |
3947 | else | |
3948 | { | |
3949 | gfc_error ("Need either entity or common block name for " | |
3950 | "attribute specification statement at %C"); | |
3951 | return FAILURE; | |
3952 | } | |
3953 | ||
3954 | /* Save the current identifier and look for more. */ | |
3955 | do | |
3956 | { | |
3957 | /* Increment the number of identifiers found for this spec stmt. */ | |
3958 | num_idents++; | |
3959 | ||
3960 | /* Make sure we have a sym or com block, and verify that it can | |
3961 | be bind(c). Set the appropriate field(s) and look for more | |
3962 | identifiers. */ | |
3963 | if (tmp_sym != NULL || com_block != NULL) | |
3964 | { | |
3965 | if (tmp_sym != NULL) | |
3966 | { | |
3967 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
3968 | != SUCCESS) | |
3969 | return FAILURE; | |
3970 | } | |
3971 | else | |
3972 | { | |
3973 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
3974 | != SUCCESS) | |
3975 | return FAILURE; | |
3976 | } | |
3977 | ||
3978 | /* Look to see if we have another identifier. */ | |
3979 | tmp_sym = NULL; | |
3980 | if (gfc_match_eos () == MATCH_YES) | |
3981 | found_id = MATCH_NO; | |
3982 | else if (gfc_match_char (',') != MATCH_YES) | |
3983 | found_id = MATCH_NO; | |
3984 | else if (gfc_match_name (name) == MATCH_YES) | |
3985 | { | |
3986 | found_id = MATCH_YES; | |
3987 | gfc_get_ha_symbol (name, &tmp_sym); | |
3988 | } | |
3989 | else if (match_common_name (name) == MATCH_YES) | |
3990 | { | |
3991 | found_id = MATCH_YES; | |
3992 | com_block = gfc_get_common (name, 0); | |
3993 | } | |
3994 | else | |
3995 | { | |
3996 | gfc_error ("Missing entity or common block name for " | |
3997 | "attribute specification statement at %C"); | |
3998 | return FAILURE; | |
3999 | } | |
4000 | } | |
4001 | else | |
4002 | { | |
4003 | gfc_internal_error ("Missing symbol"); | |
4004 | } | |
4005 | } while (found_id == MATCH_YES); | |
4006 | ||
4007 | /* if we get here we were successful */ | |
4008 | return SUCCESS; | |
4009 | } | |
4010 | ||
4011 | ||
4012 | /* Try and match a BIND(C) attribute specification statement. */ | |
4013 | ||
4014 | match | |
4015 | gfc_match_bind_c_stmt (void) | |
4016 | { | |
4017 | match found_match = MATCH_NO; | |
4018 | gfc_typespec *ts; | |
4019 | ||
4020 | ts = ¤t_ts; | |
4021 | ||
4022 | /* This may not be necessary. */ | |
4023 | gfc_clear_ts (ts); | |
4024 | /* Clear the temporary binding label holder. */ | |
4025 | curr_binding_label[0] = '\0'; | |
4026 | ||
4027 | /* Look for the bind(c). */ | |
1eabf70a | 4028 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4029 | |
4030 | if (found_match == MATCH_YES) | |
4031 | { | |
4032 | /* Look for the :: now, but it is not required. */ | |
4033 | gfc_match (" :: "); | |
4034 | ||
4035 | /* Get the identifier(s) that needs to be updated. This may need to | |
4036 | change to hand the flag(s) for the attr specified so all identifiers | |
4037 | found can have all appropriate parts updated (assuming that the same | |
4038 | spec stmt can have multiple attrs, such as both bind(c) and | |
4039 | allocatable...). */ | |
4040 | if (get_bind_c_idents () != SUCCESS) | |
4041 | /* Error message should have printed already. */ | |
4042 | return MATCH_ERROR; | |
4043 | } | |
4044 | ||
4045 | return found_match; | |
4046 | } | |
4047 | ||
4048 | ||
6de9cd9a DN |
4049 | /* Match a data declaration statement. */ |
4050 | ||
4051 | match | |
4052 | gfc_match_data_decl (void) | |
4053 | { | |
4054 | gfc_symbol *sym; | |
4055 | match m; | |
949d5b72 | 4056 | int elem; |
6de9cd9a | 4057 | |
a8b3b0b6 CR |
4058 | num_idents_on_line = 0; |
4059 | ||
e74f1cc8 | 4060 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4061 | if (m != MATCH_YES) |
4062 | return m; | |
4063 | ||
2e23972e JW |
4064 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4065 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4066 | { |
bc21d315 | 4067 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4068 | |
4069 | if (sym == NULL) | |
4070 | { | |
4071 | m = MATCH_ERROR; | |
4072 | goto cleanup; | |
4073 | } | |
4074 | ||
bc21d315 | 4075 | current_ts.u.derived = sym; |
6de9cd9a DN |
4076 | } |
4077 | ||
4078 | m = match_attr_spec (); | |
4079 | if (m == MATCH_ERROR) | |
4080 | { | |
4081 | m = MATCH_NO; | |
4082 | goto cleanup; | |
4083 | } | |
4084 | ||
2e23972e JW |
4085 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4086 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4087 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4088 | { |
4089 | ||
4090 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4091 | goto ok; | |
4092 | ||
bc21d315 JW |
4093 | gfc_find_symbol (current_ts.u.derived->name, |
4094 | current_ts.u.derived->ns->parent, 1, &sym); | |
6de9cd9a | 4095 | |
976e21f6 | 4096 | /* Any symbol that we find had better be a type definition |
636dff67 | 4097 | which has its components defined. */ |
976e21f6 | 4098 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4099 | && (current_ts.u.derived->components != NULL |
4100 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4101 | goto ok; |
4102 | ||
976e21f6 PT |
4103 | /* Now we have an error, which we signal, and then fix up |
4104 | because the knock-on is plain and simple confusing. */ | |
4105 | gfc_error_now ("Derived type at %C has not been previously defined " | |
636dff67 | 4106 | "and so cannot appear in a derived type definition"); |
976e21f6 PT |
4107 | current_attr.pointer = 1; |
4108 | goto ok; | |
6de9cd9a DN |
4109 | } |
4110 | ||
4111 | ok: | |
4112 | /* If we have an old-style character declaration, and no new-style | |
4113 | attribute specifications, then there a comma is optional between | |
4114 | the type specification and the variable list. */ | |
4115 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4116 | gfc_match_char (','); | |
4117 | ||
949d5b72 PT |
4118 | /* Give the types/attributes to symbols that follow. Give the element |
4119 | a number so that repeat character length expressions can be copied. */ | |
4120 | elem = 1; | |
6de9cd9a DN |
4121 | for (;;) |
4122 | { | |
a8b3b0b6 | 4123 | num_idents_on_line++; |
949d5b72 | 4124 | m = variable_decl (elem++); |
6de9cd9a DN |
4125 | if (m == MATCH_ERROR) |
4126 | goto cleanup; | |
4127 | if (m == MATCH_NO) | |
4128 | break; | |
4129 | ||
4130 | if (gfc_match_eos () == MATCH_YES) | |
4131 | goto cleanup; | |
4132 | if (gfc_match_char (',') != MATCH_YES) | |
4133 | break; | |
4134 | } | |
4135 | ||
8f81c3c6 PT |
4136 | if (gfc_error_flag_test () == 0) |
4137 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
4138 | m = MATCH_ERROR; |
4139 | ||
a9f6f1f2 JD |
4140 | gfc_free_data_all (gfc_current_ns); |
4141 | ||
6de9cd9a DN |
4142 | cleanup: |
4143 | gfc_free_array_spec (current_as); | |
4144 | current_as = NULL; | |
4145 | return m; | |
4146 | } | |
4147 | ||
4148 | ||
4149 | /* Match a prefix associated with a function or subroutine | |
4150 | declaration. If the typespec pointer is nonnull, then a typespec | |
4151 | can be matched. Note that if nothing matches, MATCH_YES is | |
4152 | returned (the null string was matched). */ | |
4153 | ||
1c8bcdf7 PT |
4154 | match |
4155 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4156 | { |
7389bce6 | 4157 | bool seen_type; |
e6c14898 DK |
4158 | bool seen_impure; |
4159 | bool found_prefix; | |
6de9cd9a DN |
4160 | |
4161 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4162 | seen_type = false; |
4163 | seen_impure = false; | |
6de9cd9a | 4164 | |
3df684e2 DK |
4165 | gcc_assert (!gfc_matching_prefix); |
4166 | gfc_matching_prefix = true; | |
f37e928c | 4167 | |
e6c14898 | 4168 | do |
6de9cd9a | 4169 | { |
e6c14898 | 4170 | found_prefix = false; |
6de9cd9a | 4171 | |
e6c14898 DK |
4172 | if (!seen_type && ts != NULL |
4173 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4174 | && gfc_match_space () == MATCH_YES) | |
4175 | { | |
6de9cd9a | 4176 | |
e6c14898 DK |
4177 | seen_type = true; |
4178 | found_prefix = true; | |
4179 | } | |
4180 | ||
4181 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4182 | { | |
4183 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
4184 | goto error; | |
4185 | ||
4186 | found_prefix = true; | |
4187 | } | |
4188 | ||
4189 | if (gfc_match ("pure% ") == MATCH_YES) | |
4190 | { | |
4191 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
4192 | goto error; | |
4193 | ||
4194 | found_prefix = true; | |
4195 | } | |
6de9cd9a | 4196 | |
e6c14898 DK |
4197 | if (gfc_match ("recursive% ") == MATCH_YES) |
4198 | { | |
4199 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
4200 | goto error; | |
4201 | ||
4202 | found_prefix = true; | |
4203 | } | |
4204 | ||
4205 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4206 | attribute but rather only prevents ELEMENTAL routines from being | |
4207 | automatically PURE. */ | |
4208 | if (gfc_match ("impure% ") == MATCH_YES) | |
4209 | { | |
4210 | if (gfc_notify_std (GFC_STD_F2008, | |
4211 | "Fortran 2008: IMPURE procedure at %C") | |
4212 | == FAILURE) | |
4213 | goto error; | |
4214 | ||
4215 | seen_impure = true; | |
4216 | found_prefix = true; | |
4217 | } | |
6de9cd9a | 4218 | } |
e6c14898 | 4219 | while (found_prefix); |
6de9cd9a | 4220 | |
e6c14898 DK |
4221 | /* IMPURE and PURE must not both appear, of course. */ |
4222 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4223 | { |
e6c14898 DK |
4224 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4225 | goto error; | |
6de9cd9a DN |
4226 | } |
4227 | ||
e6c14898 DK |
4228 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4229 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4230 | { |
e6c14898 | 4231 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) |
f37e928c | 4232 | goto error; |
6de9cd9a DN |
4233 | } |
4234 | ||
4235 | /* At this point, the next item is not a prefix. */ | |
3df684e2 DK |
4236 | gcc_assert (gfc_matching_prefix); |
4237 | gfc_matching_prefix = false; | |
6de9cd9a | 4238 | return MATCH_YES; |
f37e928c DK |
4239 | |
4240 | error: | |
3df684e2 DK |
4241 | gcc_assert (gfc_matching_prefix); |
4242 | gfc_matching_prefix = false; | |
f37e928c | 4243 | return MATCH_ERROR; |
6de9cd9a DN |
4244 | } |
4245 | ||
4246 | ||
1c8bcdf7 | 4247 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4248 | |
17b1d2a0 | 4249 | static gfc_try |
636dff67 | 4250 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4251 | { |
6de9cd9a DN |
4252 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
4253 | return FAILURE; | |
4254 | ||
4255 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
4256 | return FAILURE; | |
4257 | ||
4258 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
4259 | return FAILURE; | |
4260 | ||
4261 | return SUCCESS; | |
4262 | } | |
4263 | ||
4264 | ||
4265 | /* Match a formal argument list. */ | |
4266 | ||
4267 | match | |
636dff67 | 4268 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4269 | { |
4270 | gfc_formal_arglist *head, *tail, *p, *q; | |
4271 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4272 | gfc_symbol *sym; | |
4273 | match m; | |
4274 | ||
4275 | head = tail = NULL; | |
4276 | ||
4277 | if (gfc_match_char ('(') != MATCH_YES) | |
4278 | { | |
4279 | if (null_flag) | |
4280 | goto ok; | |
4281 | return MATCH_NO; | |
4282 | } | |
4283 | ||
4284 | if (gfc_match_char (')') == MATCH_YES) | |
4285 | goto ok; | |
4286 | ||
4287 | for (;;) | |
4288 | { | |
4289 | if (gfc_match_char ('*') == MATCH_YES) | |
4290 | sym = NULL; | |
4291 | else | |
4292 | { | |
4293 | m = gfc_match_name (name); | |
4294 | if (m != MATCH_YES) | |
4295 | goto cleanup; | |
4296 | ||
4297 | if (gfc_get_symbol (name, NULL, &sym)) | |
4298 | goto cleanup; | |
4299 | } | |
4300 | ||
4301 | p = gfc_get_formal_arglist (); | |
4302 | ||
4303 | if (head == NULL) | |
4304 | head = tail = p; | |
4305 | else | |
4306 | { | |
4307 | tail->next = p; | |
4308 | tail = p; | |
4309 | } | |
4310 | ||
4311 | tail->sym = sym; | |
4312 | ||
4313 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4314 | dummy procedure. We don't apply these attributes to formal |
4315 | arguments of statement functions. */ | |
6de9cd9a | 4316 | if (sym != NULL && !st_flag |
231b2fcc | 4317 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
6de9cd9a DN |
4318 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
4319 | { | |
4320 | m = MATCH_ERROR; | |
4321 | goto cleanup; | |
4322 | } | |
4323 | ||
4324 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4325 | so check for it explicitly. After the statement is accepted, |
4326 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4327 | if (gfc_new_block != NULL && sym != NULL |
4328 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4329 | { | |
4330 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4331 | sym->name); | |
4332 | m = MATCH_ERROR; | |
4333 | goto cleanup; | |
4334 | } | |
4335 | ||
4336 | if (gfc_match_char (')') == MATCH_YES) | |
4337 | goto ok; | |
4338 | ||
4339 | m = gfc_match_char (','); | |
4340 | if (m != MATCH_YES) | |
4341 | { | |
4342 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4343 | goto cleanup; | |
4344 | } | |
4345 | } | |
4346 | ||
4347 | ok: | |
4348 | /* Check for duplicate symbols in the formal argument list. */ | |
4349 | if (head != NULL) | |
4350 | { | |
4351 | for (p = head; p->next; p = p->next) | |
4352 | { | |
4353 | if (p->sym == NULL) | |
4354 | continue; | |
4355 | ||
4356 | for (q = p->next; q; q = q->next) | |
4357 | if (p->sym == q->sym) | |
4358 | { | |
636dff67 SK |
4359 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4360 | "at %C", p->sym->name); | |
6de9cd9a DN |
4361 | |
4362 | m = MATCH_ERROR; | |
4363 | goto cleanup; | |
4364 | } | |
4365 | } | |
4366 | } | |
4367 | ||
66e4ab31 SK |
4368 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
4369 | == FAILURE) | |
6de9cd9a DN |
4370 | { |
4371 | m = MATCH_ERROR; | |
4372 | goto cleanup; | |
4373 | } | |
4374 | ||
4375 | return MATCH_YES; | |
4376 | ||
4377 | cleanup: | |
4378 | gfc_free_formal_arglist (head); | |
4379 | return m; | |
4380 | } | |
4381 | ||
4382 | ||
4383 | /* Match a RESULT specification following a function declaration or | |
4384 | ENTRY statement. Also matches the end-of-statement. */ | |
4385 | ||
4386 | static match | |
66e4ab31 | 4387 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4388 | { |
4389 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4390 | gfc_symbol *r; | |
4391 | match m; | |
4392 | ||
4393 | if (gfc_match (" result (") != MATCH_YES) | |
4394 | return MATCH_NO; | |
4395 | ||
4396 | m = gfc_match_name (name); | |
4397 | if (m != MATCH_YES) | |
4398 | return m; | |
4399 | ||
a8b3b0b6 CR |
4400 | /* Get the right paren, and that's it because there could be the |
4401 | bind(c) attribute after the result clause. */ | |
4402 | if (gfc_match_char(')') != MATCH_YES) | |
6de9cd9a | 4403 | { |
a8b3b0b6 | 4404 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4405 | return MATCH_ERROR; |
4406 | } | |
4407 | ||
4408 | if (strcmp (function->name, name) == 0) | |
4409 | { | |
636dff67 | 4410 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4411 | return MATCH_ERROR; |
4412 | } | |
4413 | ||
4414 | if (gfc_get_symbol (name, NULL, &r)) | |
4415 | return MATCH_ERROR; | |
4416 | ||
726d8566 | 4417 | if (gfc_add_result (&r->attr, r->name, NULL) == FAILURE) |
6de9cd9a DN |
4418 | return MATCH_ERROR; |
4419 | ||
4420 | *result = r; | |
4421 | ||
4422 | return MATCH_YES; | |
4423 | } | |
4424 | ||
4425 | ||
a8b3b0b6 CR |
4426 | /* Match a function suffix, which could be a combination of a result |
4427 | clause and BIND(C), either one, or neither. The draft does not | |
4428 | require them to come in a specific order. */ | |
4429 | ||
4430 | match | |
4431 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4432 | { | |
4433 | match is_bind_c; /* Found bind(c). */ | |
4434 | match is_result; /* Found result clause. */ | |
4435 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4436 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4437 | bool allow_binding_name; |
a8b3b0b6 CR |
4438 | |
4439 | /* Initialize to having found nothing. */ | |
4440 | found_match = MATCH_NO; | |
4441 | is_bind_c = MATCH_NO; | |
4442 | is_result = MATCH_NO; | |
4443 | ||
4444 | /* Get the next char to narrow between result and bind(c). */ | |
4445 | gfc_gobble_whitespace (); | |
8fc541d3 | 4446 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4447 | |
1eabf70a TB |
4448 | /* C binding names are not allowed for internal procedures. */ |
4449 | if (gfc_current_state () == COMP_CONTAINS | |
4450 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4451 | allow_binding_name = false; | |
4452 | else | |
4453 | allow_binding_name = true; | |
4454 | ||
a8b3b0b6 CR |
4455 | switch (peek_char) |
4456 | { | |
4457 | case 'r': | |
4458 | /* Look for result clause. */ | |
4459 | is_result = match_result (sym, result); | |
4460 | if (is_result == MATCH_YES) | |
4461 | { | |
4462 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4463 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4464 | /* We've found the result clause and possibly bind(c). */ |
4465 | found_match = MATCH_YES; | |
4466 | } | |
4467 | else | |
4468 | /* This should only be MATCH_ERROR. */ | |
4469 | found_match = is_result; | |
4470 | break; | |
4471 | case 'b': | |
4472 | /* Look for bind(c) first. */ | |
1eabf70a | 4473 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4474 | if (is_bind_c == MATCH_YES) |
4475 | { | |
4476 | /* Now see if a result clause followed it. */ | |
4477 | is_result = match_result (sym, result); | |
4478 | found_match = MATCH_YES; | |
4479 | } | |
4480 | else | |
4481 | { | |
4482 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4483 | found_match = MATCH_ERROR; | |
4484 | } | |
4485 | break; | |
4486 | default: | |
4487 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4488 | found_match = MATCH_ERROR; | |
4489 | break; | |
4490 | } | |
4491 | ||
a8b3b0b6 | 4492 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4493 | { |
1eabf70a | 4494 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4495 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4496 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
fdc54e88 FXC |
4497 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
4498 | "at %L may not be specified for an internal " | |
4499 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
4500 | == FAILURE) |
4501 | return MATCH_ERROR; | |
4502 | ||
01f4fff1 TB |
4503 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) |
4504 | == FAILURE) | |
4505 | return MATCH_ERROR; | |
4506 | } | |
a8b3b0b6 CR |
4507 | |
4508 | return found_match; | |
4509 | } | |
4510 | ||
4511 | ||
3070bab4 JW |
4512 | /* Procedure pointer return value without RESULT statement: |
4513 | Add "hidden" result variable named "ppr@". */ | |
4514 | ||
4515 | static gfc_try | |
4516 | add_hidden_procptr_result (gfc_symbol *sym) | |
4517 | { | |
4518 | bool case1,case2; | |
4519 | ||
4520 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
4521 | return FAILURE; | |
4522 | ||
4523 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4524 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4525 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4526 | && sym->attr.external; | |
4527 | /* Second usage case: INTERFACE statements. */ | |
4528 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4529 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4530 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4531 | ||
4532 | if (case1 || case2) | |
4533 | { | |
4534 | gfc_symtree *stree; | |
4535 | if (case1) | |
08a6b8e0 | 4536 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4537 | else if (case2) |
c73b6478 JW |
4538 | { |
4539 | gfc_symtree *st2; | |
08a6b8e0 | 4540 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4541 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4542 | st2->n.sym = stree->n.sym; | |
4543 | } | |
3070bab4 JW |
4544 | sym->result = stree->n.sym; |
4545 | ||
4546 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4547 | sym->result->attr.pointer = sym->attr.pointer; | |
4548 | sym->result->attr.external = sym->attr.external; | |
4549 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4550 | sym->result->ts = sym->ts; |
3070bab4 JW |
4551 | sym->attr.proc_pointer = 0; |
4552 | sym->attr.pointer = 0; | |
4553 | sym->attr.external = 0; | |
4554 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4555 | { | |
4556 | sym->result->attr.pointer = 0; | |
4557 | sym->result->attr.proc_pointer = 1; | |
4558 | } | |
4559 | ||
4560 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4561 | } | |
4562 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4563 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4564 | && sym->result && sym->result != sym && sym->result->attr.external | |
4565 | && sym == gfc_current_ns->proc_name | |
4566 | && sym == sym->result->ns->proc_name | |
4567 | && strcmp ("ppr@", sym->result->name) == 0) | |
4568 | { | |
4569 | sym->result->attr.proc_pointer = 1; | |
4570 | sym->attr.pointer = 0; | |
4571 | return SUCCESS; | |
4572 | } | |
4573 | else | |
4574 | return FAILURE; | |
4575 | } | |
4576 | ||
4577 | ||
713485cc JW |
4578 | /* Match the interface for a PROCEDURE declaration, |
4579 | including brackets (R1212). */ | |
69773742 JW |
4580 | |
4581 | static match | |
713485cc | 4582 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
4583 | { |
4584 | match m; | |
3276e0b3 | 4585 | gfc_symtree *st; |
69773742 | 4586 | locus old_loc, entry_loc; |
3276e0b3 PT |
4587 | gfc_namespace *old_ns = gfc_current_ns; |
4588 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 4589 | |
3276e0b3 | 4590 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
4591 | gfc_clear_ts (¤t_ts); |
4592 | ||
4593 | if (gfc_match (" (") != MATCH_YES) | |
4594 | { | |
4595 | gfc_current_locus = entry_loc; | |
4596 | return MATCH_NO; | |
4597 | } | |
4598 | ||
4599 | /* Get the type spec. for the procedure interface. */ | |
4600 | old_loc = gfc_current_locus; | |
e74f1cc8 | 4601 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 4602 | gfc_gobble_whitespace (); |
8fc541d3 | 4603 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
4604 | goto got_ts; |
4605 | ||
4606 | if (m == MATCH_ERROR) | |
4607 | return m; | |
4608 | ||
3276e0b3 | 4609 | /* Procedure interface is itself a procedure. */ |
69773742 | 4610 | gfc_current_locus = old_loc; |
3276e0b3 | 4611 | m = gfc_match_name (name); |
69773742 | 4612 | |
3276e0b3 PT |
4613 | /* First look to see if it is already accessible in the current |
4614 | namespace because it is use associated or contained. */ | |
4615 | st = NULL; | |
4616 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4617 | return MATCH_ERROR; | |
4618 | ||
4619 | /* If it is still not found, then try the parent namespace, if it | |
4620 | exists and create the symbol there if it is still not found. */ | |
4621 | if (gfc_current_ns->parent) | |
4622 | gfc_current_ns = gfc_current_ns->parent; | |
4623 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4624 | return MATCH_ERROR; | |
4625 | ||
4626 | gfc_current_ns = old_ns; | |
4627 | *proc_if = st->n.sym; | |
69773742 JW |
4628 | |
4629 | /* Various interface checks. */ | |
713485cc | 4630 | if (*proc_if) |
69773742 | 4631 | { |
713485cc | 4632 | (*proc_if)->refs++; |
bb343a6c TB |
4633 | /* Resolve interface if possible. That way, attr.procedure is only set |
4634 | if it is declared by a later procedure-declaration-stmt, which is | |
4635 | invalid per C1212. */ | |
713485cc JW |
4636 | while ((*proc_if)->ts.interface) |
4637 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 4638 | |
713485cc | 4639 | if ((*proc_if)->generic) |
69773742 | 4640 | { |
713485cc JW |
4641 | gfc_error ("Interface '%s' at %C may not be generic", |
4642 | (*proc_if)->name); | |
69773742 JW |
4643 | return MATCH_ERROR; |
4644 | } | |
713485cc | 4645 | if ((*proc_if)->attr.proc == PROC_ST_FUNCTION) |
69773742 JW |
4646 | { |
4647 | gfc_error ("Interface '%s' at %C may not be a statement function", | |
713485cc | 4648 | (*proc_if)->name); |
69773742 JW |
4649 | return MATCH_ERROR; |
4650 | } | |
4651 | /* Handle intrinsic procedures. */ | |
713485cc JW |
4652 | if (!((*proc_if)->attr.external || (*proc_if)->attr.use_assoc |
4653 | || (*proc_if)->attr.if_source == IFSRC_IFBODY) | |
4654 | && (gfc_is_intrinsic ((*proc_if), 0, gfc_current_locus) | |
4655 | || gfc_is_intrinsic ((*proc_if), 1, gfc_current_locus))) | |
4656 | (*proc_if)->attr.intrinsic = 1; | |
4657 | if ((*proc_if)->attr.intrinsic | |
4658 | && !gfc_intrinsic_actual_ok ((*proc_if)->name, 0)) | |
69773742 JW |
4659 | { |
4660 | gfc_error ("Intrinsic procedure '%s' not allowed " | |
713485cc | 4661 | "in PROCEDURE statement at %C", (*proc_if)->name); |
69773742 JW |
4662 | return MATCH_ERROR; |
4663 | } | |
69773742 JW |
4664 | } |
4665 | ||
4666 | got_ts: | |
69773742 JW |
4667 | if (gfc_match (" )") != MATCH_YES) |
4668 | { | |
4669 | gfc_current_locus = entry_loc; | |
4670 | return MATCH_NO; | |
4671 | } | |
4672 | ||
713485cc JW |
4673 | return MATCH_YES; |
4674 | } | |
4675 | ||
4676 | ||
4677 | /* Match a PROCEDURE declaration (R1211). */ | |
4678 | ||
4679 | static match | |
4680 | match_procedure_decl (void) | |
4681 | { | |
4682 | match m; | |
4683 | gfc_symbol *sym, *proc_if = NULL; | |
4684 | int num; | |
4685 | gfc_expr *initializer = NULL; | |
4686 | ||
4687 | /* Parse interface (with brackets). */ | |
4688 | m = match_procedure_interface (&proc_if); | |
4689 | if (m != MATCH_YES) | |
4690 | return m; | |
4691 | ||
4692 | /* Parse attributes (with colons). */ | |
69773742 JW |
4693 | m = match_attr_spec(); |
4694 | if (m == MATCH_ERROR) | |
4695 | return MATCH_ERROR; | |
4696 | ||
4697 | /* Get procedure symbols. */ | |
4698 | for(num=1;;num++) | |
4699 | { | |
69773742 JW |
4700 | m = gfc_match_symbol (&sym, 0); |
4701 | if (m == MATCH_NO) | |
4702 | goto syntax; | |
4703 | else if (m == MATCH_ERROR) | |
4704 | return m; | |
4705 | ||
4706 | /* Add current_attr to the symbol attributes. */ | |
4707 | if (gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4708 | return MATCH_ERROR; | |
4709 | ||
4710 | if (sym->attr.is_bind_c) | |
4711 | { | |
4712 | /* Check for C1218. */ | |
4713 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4714 | { | |
4715 | gfc_error ("BIND(C) attribute at %C requires " | |
4716 | "an interface with BIND(C)"); | |
4717 | return MATCH_ERROR; | |
4718 | } | |
4719 | /* Check for C1217. */ | |
4720 | if (has_name_equals && sym->attr.pointer) | |
4721 | { | |
4722 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4723 | "POINTER attribute at %C"); | |
4724 | return MATCH_ERROR; | |
4725 | } | |
4726 | if (has_name_equals && sym->attr.dummy) | |
4727 | { | |
4728 | gfc_error ("Dummy procedure at %C may not have " | |
4729 | "BIND(C) attribute with NAME"); | |
4730 | return MATCH_ERROR; | |
4731 | } | |
4732 | /* Set binding label for BIND(C). */ | |
4733 | if (set_binding_label (sym->binding_label, sym->name, num) != SUCCESS) | |
4734 | return MATCH_ERROR; | |
4735 | } | |
4736 | ||
8fb74da4 | 4737 | if (gfc_add_external (&sym->attr, NULL) == FAILURE) |
69773742 | 4738 | return MATCH_ERROR; |
3070bab4 JW |
4739 | |
4740 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
4741 | sym = sym->result; | |
4742 | ||
69773742 JW |
4743 | if (gfc_add_proc (&sym->attr, sym->name, NULL) == FAILURE) |
4744 | return MATCH_ERROR; | |
4745 | ||
4746 | /* Set interface. */ | |
4747 | if (proc_if != NULL) | |
6cc309c9 | 4748 | { |
1d146030 JW |
4749 | if (sym->ts.type != BT_UNKNOWN) |
4750 | { | |
4751 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4752 | sym->name, &gfc_current_locus, | |
4753 | gfc_basic_typename (sym->ts.type)); | |
4754 | return MATCH_ERROR; | |
4755 | } | |
32d99e68 | 4756 | sym->ts.interface = proc_if; |
6cc309c9 | 4757 | sym->attr.untyped = 1; |
c73b6478 | 4758 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 4759 | } |
69773742 JW |
4760 | else if (current_ts.type != BT_UNKNOWN) |
4761 | { | |
1d146030 JW |
4762 | if (gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) |
4763 | return MATCH_ERROR; | |
32d99e68 JW |
4764 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4765 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 4766 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 4767 | sym->ts.interface->attr.function = 1; |
d91909c0 | 4768 | sym->attr.function = 1; |
c73b6478 | 4769 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
4770 | } |
4771 | ||
8fb74da4 JW |
4772 | if (gfc_match (" =>") == MATCH_YES) |
4773 | { | |
4774 | if (!current_attr.pointer) | |
4775 | { | |
4776 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4777 | m = MATCH_ERROR; | |
4778 | goto cleanup; | |
4779 | } | |
4780 | ||
80f95228 | 4781 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
4782 | if (m != MATCH_YES) |
4783 | goto cleanup; | |
4784 | ||
4785 | if (add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus) | |
4786 | != SUCCESS) | |
4787 | goto cleanup; | |
4788 | ||
4789 | } | |
4790 | ||
4791 | gfc_set_sym_referenced (sym); | |
4792 | ||
69773742 JW |
4793 | if (gfc_match_eos () == MATCH_YES) |
4794 | return MATCH_YES; | |
4795 | if (gfc_match_char (',') != MATCH_YES) | |
4796 | goto syntax; | |
4797 | } | |
4798 | ||
4799 | syntax: | |
4800 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4801 | return MATCH_ERROR; | |
8fb74da4 JW |
4802 | |
4803 | cleanup: | |
4804 | /* Free stuff up and return. */ | |
4805 | gfc_free_expr (initializer); | |
4806 | return m; | |
69773742 JW |
4807 | } |
4808 | ||
4809 | ||
713485cc JW |
4810 | static match |
4811 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4812 | ||
4813 | ||
4814 | /* Match a procedure pointer component declaration (R445). */ | |
4815 | ||
4816 | static match | |
4817 | match_ppc_decl (void) | |
4818 | { | |
4819 | match m; | |
4820 | gfc_symbol *proc_if = NULL; | |
4821 | gfc_typespec ts; | |
4822 | int num; | |
4823 | gfc_component *c; | |
4824 | gfc_expr *initializer = NULL; | |
4825 | gfc_typebound_proc* tb; | |
4826 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4827 | ||
4828 | /* Parse interface (with brackets). */ | |
4829 | m = match_procedure_interface (&proc_if); | |
4830 | if (m != MATCH_YES) | |
4831 | goto syntax; | |
4832 | ||
4833 | /* Parse attributes. */ | |
4834 | tb = XCNEW (gfc_typebound_proc); | |
4835 | tb->where = gfc_current_locus; | |
4836 | m = match_binding_attributes (tb, false, true); | |
4837 | if (m == MATCH_ERROR) | |
4838 | return m; | |
4839 | ||
713485cc JW |
4840 | gfc_clear_attr (¤t_attr); |
4841 | current_attr.procedure = 1; | |
4842 | current_attr.proc_pointer = 1; | |
4843 | current_attr.access = tb->access; | |
4844 | current_attr.flavor = FL_PROCEDURE; | |
4845 | ||
4846 | /* Match the colons (required). */ | |
4847 | if (gfc_match (" ::") != MATCH_YES) | |
4848 | { | |
4849 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
4850 | return MATCH_ERROR; | |
4851 | } | |
4852 | ||
4853 | /* Check for C450. */ | |
4854 | if (!tb->nopass && proc_if == NULL) | |
4855 | { | |
4856 | gfc_error("NOPASS or explicit interface required at %C"); | |
4857 | return MATCH_ERROR; | |
4858 | } | |
4859 | ||
3212c187 SK |
4860 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Procedure pointer " |
4861 | "component at %C") == FAILURE) | |
4862 | return MATCH_ERROR; | |
4863 | ||
713485cc JW |
4864 | /* Match PPC names. */ |
4865 | ts = current_ts; | |
4866 | for(num=1;;num++) | |
4867 | { | |
4868 | m = gfc_match_name (name); | |
4869 | if (m == MATCH_NO) | |
4870 | goto syntax; | |
4871 | else if (m == MATCH_ERROR) | |
4872 | return m; | |
4873 | ||
4874 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
4875 | return MATCH_ERROR; | |
4876 | ||
4877 | /* Add current_attr to the symbol attributes. */ | |
4878 | if (gfc_copy_attr (&c->attr, ¤t_attr, NULL) == FAILURE) | |
4879 | return MATCH_ERROR; | |
4880 | ||
4881 | if (gfc_add_external (&c->attr, NULL) == FAILURE) | |
4882 | return MATCH_ERROR; | |
4883 | ||
4884 | if (gfc_add_proc (&c->attr, name, NULL) == FAILURE) | |
4885 | return MATCH_ERROR; | |
4886 | ||
90661f26 JW |
4887 | c->tb = tb; |
4888 | ||
713485cc JW |
4889 | /* Set interface. */ |
4890 | if (proc_if != NULL) | |
4891 | { | |
4892 | c->ts.interface = proc_if; | |
4893 | c->attr.untyped = 1; | |
4894 | c->attr.if_source = IFSRC_IFBODY; | |
4895 | } | |
4896 | else if (ts.type != BT_UNKNOWN) | |
4897 | { | |
4898 | c->ts = ts; | |
4899 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
4900 | c->ts.interface->ts = ts; | |
d91909c0 | 4901 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 4902 | c->ts.interface->attr.function = 1; |
d91909c0 | 4903 | c->attr.function = 1; |
713485cc JW |
4904 | c->attr.if_source = IFSRC_UNKNOWN; |
4905 | } | |
4906 | ||
4907 | if (gfc_match (" =>") == MATCH_YES) | |
4908 | { | |
80f95228 | 4909 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
4910 | if (m != MATCH_YES) |
4911 | { | |
4912 | gfc_free_expr (initializer); | |
4913 | return m; | |
4914 | } | |
4915 | c->initializer = initializer; | |
4916 | } | |
4917 | ||
4918 | if (gfc_match_eos () == MATCH_YES) | |
4919 | return MATCH_YES; | |
4920 | if (gfc_match_char (',') != MATCH_YES) | |
4921 | goto syntax; | |
4922 | } | |
4923 | ||
4924 | syntax: | |
4925 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
4926 | return MATCH_ERROR; | |
4927 | } | |
4928 | ||
4929 | ||
69773742 JW |
4930 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
4931 | ||
4932 | static match | |
4933 | match_procedure_in_interface (void) | |
4934 | { | |
4935 | match m; | |
4936 | gfc_symbol *sym; | |
4937 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4938 | ||
4939 | if (current_interface.type == INTERFACE_NAMELESS | |
4940 | || current_interface.type == INTERFACE_ABSTRACT) | |
4941 | { | |
4942 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
4943 | return MATCH_ERROR; | |
4944 | } | |
4945 | ||
4946 | for(;;) | |
4947 | { | |
4948 | m = gfc_match_name (name); | |
4949 | if (m == MATCH_NO) | |
4950 | goto syntax; | |
4951 | else if (m == MATCH_ERROR) | |
4952 | return m; | |
4953 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
4954 | return MATCH_ERROR; | |
4955 | ||
4956 | if (gfc_add_interface (sym) == FAILURE) | |
4957 | return MATCH_ERROR; | |
4958 | ||
69773742 JW |
4959 | if (gfc_match_eos () == MATCH_YES) |
4960 | break; | |
4961 | if (gfc_match_char (',') != MATCH_YES) | |
4962 | goto syntax; | |
4963 | } | |
4964 | ||
4965 | return MATCH_YES; | |
4966 | ||
4967 | syntax: | |
4968 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4969 | return MATCH_ERROR; | |
4970 | } | |
4971 | ||
4972 | ||
4973 | /* General matcher for PROCEDURE declarations. */ | |
4974 | ||
30b608eb DK |
4975 | static match match_procedure_in_type (void); |
4976 | ||
69773742 JW |
4977 | match |
4978 | gfc_match_procedure (void) | |
4979 | { | |
4980 | match m; | |
4981 | ||
4982 | switch (gfc_current_state ()) | |
4983 | { | |
4984 | case COMP_NONE: | |
4985 | case COMP_PROGRAM: | |
4986 | case COMP_MODULE: | |
4987 | case COMP_SUBROUTINE: | |
4988 | case COMP_FUNCTION: | |
3547d57e | 4989 | case COMP_BLOCK: |
69773742 JW |
4990 | m = match_procedure_decl (); |
4991 | break; | |
4992 | case COMP_INTERFACE: | |
4993 | m = match_procedure_in_interface (); | |
4994 | break; | |
4995 | case COMP_DERIVED: | |
713485cc JW |
4996 | m = match_ppc_decl (); |
4997 | break; | |
30b608eb DK |
4998 | case COMP_DERIVED_CONTAINS: |
4999 | m = match_procedure_in_type (); | |
5000 | break; | |
69773742 JW |
5001 | default: |
5002 | return MATCH_NO; | |
5003 | } | |
5004 | ||
5005 | if (m != MATCH_YES) | |
5006 | return m; | |
5007 | ||
5008 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROCEDURE statement at %C") | |
5009 | == FAILURE) | |
5010 | return MATCH_ERROR; | |
5011 | ||
5012 | return m; | |
5013 | } | |
5014 | ||
5015 | ||
c3005b0f DK |
5016 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5017 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5018 | parser-state-stack to find out whether we're in a module. */ | |
5019 | ||
5020 | static void | |
5021 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5022 | { | |
5023 | bool in_module; | |
5024 | ||
5025 | in_module = (gfc_state_stack->previous | |
5026 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5027 | ||
5028 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5029 | } | |
5030 | ||
5031 | ||
6de9cd9a DN |
5032 | /* Match a function declaration. */ |
5033 | ||
5034 | match | |
5035 | gfc_match_function_decl (void) | |
5036 | { | |
5037 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5038 | gfc_symbol *sym, *result; | |
5039 | locus old_loc; | |
5040 | match m; | |
a8b3b0b6 CR |
5041 | match suffix_match; |
5042 | match found_match; /* Status returned by match func. */ | |
6de9cd9a DN |
5043 | |
5044 | if (gfc_current_state () != COMP_NONE | |
5045 | && gfc_current_state () != COMP_INTERFACE | |
5046 | && gfc_current_state () != COMP_CONTAINS) | |
5047 | return MATCH_NO; | |
5048 | ||
5049 | gfc_clear_ts (¤t_ts); | |
5050 | ||
63645982 | 5051 | old_loc = gfc_current_locus; |
6de9cd9a | 5052 | |
1c8bcdf7 | 5053 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5054 | if (m != MATCH_YES) |
5055 | { | |
63645982 | 5056 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5057 | return m; |
5058 | } | |
5059 | ||
5060 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5061 | { | |
63645982 | 5062 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5063 | return MATCH_NO; |
5064 | } | |
1a492601 | 5065 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5066 | return MATCH_ERROR; |
3070bab4 JW |
5067 | |
5068 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
5069 | sym = sym->result; | |
5070 | ||
6de9cd9a DN |
5071 | gfc_new_block = sym; |
5072 | ||
5073 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5074 | if (m == MATCH_NO) | |
2b9a33ae TS |
5075 | { |
5076 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5077 | "definition at %C"); |
2b9a33ae TS |
5078 | m = MATCH_ERROR; |
5079 | goto cleanup; | |
5080 | } | |
6de9cd9a DN |
5081 | else if (m == MATCH_ERROR) |
5082 | goto cleanup; | |
5083 | ||
5084 | result = NULL; | |
5085 | ||
a8b3b0b6 CR |
5086 | /* According to the draft, the bind(c) and result clause can |
5087 | come in either order after the formal_arg_list (i.e., either | |
5088 | can be first, both can exist together or by themselves or neither | |
5089 | one). Therefore, the match_result can't match the end of the | |
5090 | string, and check for the bind(c) or result clause in either order. */ | |
5091 | found_match = gfc_match_eos (); | |
5092 | ||
5093 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5094 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5095 | not allowed for procedures. */ | |
5096 | if (sym->attr.is_bind_c == 1) | |
5097 | { | |
5098 | sym->attr.is_bind_c = 0; | |
5099 | if (sym->old_symbol != NULL) | |
5100 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5101 | "variables or common blocks", | |
5102 | &(sym->old_symbol->declared_at)); | |
5103 | else | |
5104 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5105 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5106 | } |
5107 | ||
a8b3b0b6 | 5108 | if (found_match != MATCH_YES) |
6de9cd9a | 5109 | { |
a8b3b0b6 CR |
5110 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5111 | suffix_match = gfc_match_suffix (sym, &result); | |
5112 | if (suffix_match == MATCH_YES) | |
5113 | /* Need to get the eos now. */ | |
5114 | found_match = gfc_match_eos (); | |
5115 | else | |
5116 | found_match = suffix_match; | |
6de9cd9a DN |
5117 | } |
5118 | ||
a8b3b0b6 CR |
5119 | if(found_match != MATCH_YES) |
5120 | m = MATCH_ERROR; | |
6de9cd9a DN |
5121 | else |
5122 | { | |
a8b3b0b6 CR |
5123 | /* Make changes to the symbol. */ |
5124 | m = MATCH_ERROR; | |
5125 | ||
5126 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
5127 | goto cleanup; | |
5128 | ||
5129 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
5130 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5131 | goto cleanup; | |
6de9cd9a | 5132 | |
a99d95a2 | 5133 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5134 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5135 | sym->declared_at = old_loc; |
5136 | if (current_ts.type != BT_UNKNOWN) | |
5137 | current_ts.kind = -1; | |
5138 | else | |
5139 | current_ts.kind = 0; | |
1c8bcdf7 | 5140 | |
a8b3b0b6 CR |
5141 | if (result == NULL) |
5142 | { | |
6de7294f JW |
5143 | if (current_ts.type != BT_UNKNOWN |
5144 | && gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) | |
5145 | goto cleanup; | |
a8b3b0b6 CR |
5146 | sym->result = sym; |
5147 | } | |
5148 | else | |
5149 | { | |
6de7294f JW |
5150 | if (current_ts.type != BT_UNKNOWN |
5151 | && gfc_add_type (result, ¤t_ts, &gfc_current_locus) | |
5152 | == FAILURE) | |
5153 | goto cleanup; | |
a8b3b0b6 CR |
5154 | sym->result = result; |
5155 | } | |
5156 | ||
c3005b0f DK |
5157 | /* Warn if this procedure has the same name as an intrinsic. */ |
5158 | warn_intrinsic_shadow (sym, true); | |
5159 | ||
a8b3b0b6 CR |
5160 | return MATCH_YES; |
5161 | } | |
6de9cd9a DN |
5162 | |
5163 | cleanup: | |
63645982 | 5164 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5165 | return m; |
5166 | } | |
5167 | ||
636dff67 SK |
5168 | |
5169 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5170 | pass the name of the entry, rather than the gfc_current_block name, and | |
5171 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5172 | |
5173 | static bool | |
636dff67 | 5174 | add_global_entry (const char *name, int sub) |
68ea355b PT |
5175 | { |
5176 | gfc_gsymbol *s; | |
32e8bb8e | 5177 | enum gfc_symbol_type type; |
68ea355b PT |
5178 | |
5179 | s = gfc_get_gsymbol(name); | |
7389bce6 | 5180 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b PT |
5181 | |
5182 | if (s->defined | |
636dff67 | 5183 | || (s->type != GSYM_UNKNOWN |
7389bce6 | 5184 | && s->type != type)) |
ca39e6f2 | 5185 | gfc_global_used(s, NULL); |
68ea355b PT |
5186 | else |
5187 | { | |
7389bce6 | 5188 | s->type = type; |
68ea355b PT |
5189 | s->where = gfc_current_locus; |
5190 | s->defined = 1; | |
71a7778c | 5191 | s->ns = gfc_current_ns; |
68ea355b PT |
5192 | return true; |
5193 | } | |
5194 | return false; | |
5195 | } | |
6de9cd9a | 5196 | |
636dff67 | 5197 | |
6de9cd9a DN |
5198 | /* Match an ENTRY statement. */ |
5199 | ||
5200 | match | |
5201 | gfc_match_entry (void) | |
5202 | { | |
3d79abbd PB |
5203 | gfc_symbol *proc; |
5204 | gfc_symbol *result; | |
5205 | gfc_symbol *entry; | |
6de9cd9a DN |
5206 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5207 | gfc_compile_state state; | |
5208 | match m; | |
3d79abbd | 5209 | gfc_entry_list *el; |
c96cfa49 | 5210 | locus old_loc; |
1a492601 | 5211 | bool module_procedure; |
bc3e7a8c TB |
5212 | char peek_char; |
5213 | match is_bind_c; | |
6de9cd9a DN |
5214 | |
5215 | m = gfc_match_name (name); | |
5216 | if (m != MATCH_YES) | |
5217 | return m; | |
5218 | ||
58fc89f6 TB |
5219 | if (gfc_notify_std (GFC_STD_F2008_OBS, "Fortran 2008 obsolescent feature: " |
5220 | "ENTRY statement at %C") == FAILURE) | |
5221 | return MATCH_ERROR; | |
5222 | ||
3d79abbd | 5223 | state = gfc_current_state (); |
4c93c95a | 5224 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5225 | { |
4c93c95a FXC |
5226 | switch (state) |
5227 | { | |
5228 | case COMP_PROGRAM: | |
5229 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5230 | break; | |
5231 | case COMP_MODULE: | |
5232 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5233 | break; | |
5234 | case COMP_BLOCK_DATA: | |
636dff67 SK |
5235 | gfc_error ("ENTRY statement at %C cannot appear within " |
5236 | "a BLOCK DATA"); | |
4c93c95a FXC |
5237 | break; |
5238 | case COMP_INTERFACE: | |
636dff67 SK |
5239 | gfc_error ("ENTRY statement at %C cannot appear within " |
5240 | "an INTERFACE"); | |
4c93c95a FXC |
5241 | break; |
5242 | case COMP_DERIVED: | |
636dff67 SK |
5243 | gfc_error ("ENTRY statement at %C cannot appear within " |
5244 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5245 | break; |
5246 | case COMP_IF: | |
636dff67 SK |
5247 | gfc_error ("ENTRY statement at %C cannot appear within " |
5248 | "an IF-THEN block"); | |
4c93c95a FXC |
5249 | break; |
5250 | case COMP_DO: | |
636dff67 SK |
5251 | gfc_error ("ENTRY statement at %C cannot appear within " |
5252 | "a DO block"); | |
4c93c95a FXC |
5253 | break; |
5254 | case COMP_SELECT: | |
636dff67 SK |
5255 | gfc_error ("ENTRY statement at %C cannot appear within " |
5256 | "a SELECT block"); | |
4c93c95a FXC |
5257 | break; |
5258 | case COMP_FORALL: | |
636dff67 SK |
5259 | gfc_error ("ENTRY statement at %C cannot appear within " |
5260 | "a FORALL block"); | |
4c93c95a FXC |
5261 | break; |
5262 | case COMP_WHERE: | |
636dff67 SK |
5263 | gfc_error ("ENTRY statement at %C cannot appear within " |
5264 | "a WHERE block"); | |
4c93c95a FXC |
5265 | break; |
5266 | case COMP_CONTAINS: | |
636dff67 SK |
5267 | gfc_error ("ENTRY statement at %C cannot appear within " |
5268 | "a contained subprogram"); | |
4c93c95a FXC |
5269 | break; |
5270 | default: | |
5271 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5272 | } | |
3d79abbd PB |
5273 | return MATCH_ERROR; |
5274 | } | |
5275 | ||
1a492601 | 5276 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5277 | && gfc_current_ns->parent->proc_name |
5278 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5279 | == FL_MODULE; | |
1a492601 | 5280 | |
3d79abbd PB |
5281 | if (gfc_current_ns->parent != NULL |
5282 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5283 | && !module_procedure) |
3d79abbd PB |
5284 | { |
5285 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5286 | "contained procedure"); | |
5287 | return MATCH_ERROR; | |
5288 | } | |
5289 | ||
1a492601 PT |
5290 | /* Module function entries need special care in get_proc_name |
5291 | because previous references within the function will have | |
5292 | created symbols attached to the current namespace. */ | |
5293 | if (get_proc_name (name, &entry, | |
5294 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5295 | && module_procedure)) |
6de9cd9a DN |
5296 | return MATCH_ERROR; |
5297 | ||
3d79abbd PB |
5298 | proc = gfc_current_block (); |
5299 | ||
bc3e7a8c TB |
5300 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5301 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5302 | not allowed for procedures. */ | |
5303 | if (entry->attr.is_bind_c == 1) | |
5304 | { | |
5305 | entry->attr.is_bind_c = 0; | |
5306 | if (entry->old_symbol != NULL) | |
5307 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5308 | "variables or common blocks", | |
5309 | &(entry->old_symbol->declared_at)); | |
5310 | else | |
5311 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5312 | "variables or common blocks", &gfc_current_locus); | |
5313 | } | |
5314 | ||
5315 | /* Check what next non-whitespace character is so we can tell if there | |
5316 | is the required parens if we have a BIND(C). */ | |
5317 | gfc_gobble_whitespace (); | |
8fc541d3 | 5318 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5319 | |
3d79abbd | 5320 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5321 | { |
231b2fcc | 5322 | /* An entry in a subroutine. */ |
182393f4 | 5323 | if (!gfc_current_ns->parent && !add_global_entry (name, 1)) |
68ea355b PT |
5324 | return MATCH_ERROR; |
5325 | ||
6de9cd9a DN |
5326 | m = gfc_match_formal_arglist (entry, 0, 1); |
5327 | if (m != MATCH_YES) | |
5328 | return MATCH_ERROR; | |
5329 | ||
1eabf70a TB |
5330 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5331 | never be an internal procedure. */ | |
5332 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5333 | if (is_bind_c == MATCH_ERROR) |
5334 | return MATCH_ERROR; | |
5335 | if (is_bind_c == MATCH_YES) | |
5336 | { | |
5337 | if (peek_char != '(') | |
5338 | { | |
5339 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5340 | return MATCH_ERROR; | |
5341 | } | |
5342 | if (gfc_add_is_bind_c (&(entry->attr), entry->name, &(entry->declared_at), 1) | |
5343 | == FAILURE) | |
5344 | return MATCH_ERROR; | |
5345 | } | |
5346 | ||
231b2fcc TS |
5347 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5348 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a | 5349 | return MATCH_ERROR; |
3d79abbd PB |
5350 | } |
5351 | else | |
5352 | { | |
c96cfa49 | 5353 | /* An entry in a function. |
636dff67 SK |
5354 | We need to take special care because writing |
5355 | ENTRY f() | |
5356 | as | |
5357 | ENTRY f | |
5358 | is allowed, whereas | |
5359 | ENTRY f() RESULT (r) | |
5360 | can't be written as | |
5361 | ENTRY f RESULT (r). */ | |
182393f4 | 5362 | if (!gfc_current_ns->parent && !add_global_entry (name, 0)) |
68ea355b PT |
5363 | return MATCH_ERROR; |
5364 | ||
c96cfa49 TS |
5365 | old_loc = gfc_current_locus; |
5366 | if (gfc_match_eos () == MATCH_YES) | |
5367 | { | |
5368 | gfc_current_locus = old_loc; | |
5369 | /* Match the empty argument list, and add the interface to | |
5370 | the symbol. */ | |
5371 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5372 | } | |
5373 | else | |
5374 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5375 | ||
6de9cd9a DN |
5376 | if (m != MATCH_YES) |
5377 | return MATCH_ERROR; | |
5378 | ||
6de9cd9a DN |
5379 | result = NULL; |
5380 | ||
5381 | if (gfc_match_eos () == MATCH_YES) | |
5382 | { | |
231b2fcc TS |
5383 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5384 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a DN |
5385 | return MATCH_ERROR; |
5386 | ||
d198b59a | 5387 | entry->result = entry; |
6de9cd9a DN |
5388 | } |
5389 | else | |
5390 | { | |
bc3e7a8c | 5391 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5392 | if (m == MATCH_NO) |
5393 | gfc_syntax_error (ST_ENTRY); | |
5394 | if (m != MATCH_YES) | |
5395 | return MATCH_ERROR; | |
5396 | ||
bc3e7a8c TB |
5397 | if (result) |
5398 | { | |
5399 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE | |
5400 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
5401 | || gfc_add_function (&entry->attr, result->name, NULL) | |
5402 | == FAILURE) | |
5403 | return MATCH_ERROR; | |
5404 | entry->result = result; | |
5405 | } | |
5406 | else | |
5407 | { | |
5408 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE | |
5409 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
5410 | return MATCH_ERROR; | |
5411 | entry->result = entry; | |
5412 | } | |
6de9cd9a | 5413 | } |
6de9cd9a DN |
5414 | } |
5415 | ||
5416 | if (gfc_match_eos () != MATCH_YES) | |
5417 | { | |
5418 | gfc_syntax_error (ST_ENTRY); | |
5419 | return MATCH_ERROR; | |
5420 | } | |
5421 | ||
3d79abbd PB |
5422 | entry->attr.recursive = proc->attr.recursive; |
5423 | entry->attr.elemental = proc->attr.elemental; | |
5424 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5425 | |
3d79abbd PB |
5426 | el = gfc_get_entry_list (); |
5427 | el->sym = entry; | |
5428 | el->next = gfc_current_ns->entries; | |
5429 | gfc_current_ns->entries = el; | |
5430 | if (el->next) | |
5431 | el->id = el->next->id + 1; | |
5432 | else | |
5433 | el->id = 1; | |
6de9cd9a | 5434 | |
3d79abbd PB |
5435 | new_st.op = EXEC_ENTRY; |
5436 | new_st.ext.entry = el; | |
5437 | ||
5438 | return MATCH_YES; | |
6de9cd9a DN |
5439 | } |
5440 | ||
5441 | ||
5442 | /* Match a subroutine statement, including optional prefixes. */ | |
5443 | ||
5444 | match | |
5445 | gfc_match_subroutine (void) | |
5446 | { | |
5447 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5448 | gfc_symbol *sym; | |
5449 | match m; | |
a8b3b0b6 CR |
5450 | match is_bind_c; |
5451 | char peek_char; | |
1eabf70a | 5452 | bool allow_binding_name; |
6de9cd9a DN |
5453 | |
5454 | if (gfc_current_state () != COMP_NONE | |
5455 | && gfc_current_state () != COMP_INTERFACE | |
5456 | && gfc_current_state () != COMP_CONTAINS) | |
5457 | return MATCH_NO; | |
5458 | ||
1c8bcdf7 | 5459 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5460 | if (m != MATCH_YES) |
5461 | return m; | |
5462 | ||
5463 | m = gfc_match ("subroutine% %n", name); | |
5464 | if (m != MATCH_YES) | |
5465 | return m; | |
5466 | ||
1a492601 | 5467 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5468 | return MATCH_ERROR; |
3070bab4 | 5469 | |
7fcd5ad5 TB |
5470 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5471 | the symbol existed before. */ | |
5472 | sym->declared_at = gfc_current_locus; | |
5473 | ||
3070bab4 JW |
5474 | if (add_hidden_procptr_result (sym) == SUCCESS) |
5475 | sym = sym->result; | |
5476 | ||
6de9cd9a DN |
5477 | gfc_new_block = sym; |
5478 | ||
a8b3b0b6 | 5479 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5480 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5481 | gfc_gobble_whitespace (); |
8fc541d3 | 5482 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 5483 | |
231b2fcc | 5484 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5485 | return MATCH_ERROR; |
5486 | ||
5487 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5488 | return MATCH_ERROR; | |
5489 | ||
a8b3b0b6 CR |
5490 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5491 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5492 | not allowed for procedures. */ | |
5493 | if (sym->attr.is_bind_c == 1) | |
5494 | { | |
5495 | sym->attr.is_bind_c = 0; | |
5496 | if (sym->old_symbol != NULL) | |
5497 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5498 | "variables or common blocks", | |
5499 | &(sym->old_symbol->declared_at)); | |
5500 | else | |
5501 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5502 | "variables or common blocks", &gfc_current_locus); | |
5503 | } | |
1eabf70a TB |
5504 | |
5505 | /* C binding names are not allowed for internal procedures. */ | |
5506 | if (gfc_current_state () == COMP_CONTAINS | |
5507 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5508 | allow_binding_name = false; | |
5509 | else | |
5510 | allow_binding_name = true; | |
5511 | ||
a8b3b0b6 CR |
5512 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5513 | so, then we need to make sure it's all correct. If it doesn't, | |
5514 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5515 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5516 | if (is_bind_c == MATCH_ERROR) |
5517 | { | |
5518 | /* There was an attempt at the bind(c), but it was wrong. An | |
5519 | error message should have been printed w/in the gfc_match_bind_c | |
5520 | so here we'll just return the MATCH_ERROR. */ | |
5521 | return MATCH_ERROR; | |
5522 | } | |
5523 | ||
5524 | if (is_bind_c == MATCH_YES) | |
5525 | { | |
1eabf70a | 5526 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 5527 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5528 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
fdc54e88 FXC |
5529 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
5530 | "at %L may not be specified for an internal " | |
5531 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
5532 | == FAILURE) |
5533 | return MATCH_ERROR; | |
5534 | ||
a8b3b0b6 CR |
5535 | if (peek_char != '(') |
5536 | { | |
5537 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5538 | return MATCH_ERROR; | |
5539 | } | |
5540 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
5541 | == FAILURE) | |
5542 | return MATCH_ERROR; | |
5543 | } | |
5544 | ||
6de9cd9a DN |
5545 | if (gfc_match_eos () != MATCH_YES) |
5546 | { | |
5547 | gfc_syntax_error (ST_SUBROUTINE); | |
5548 | return MATCH_ERROR; | |
5549 | } | |
5550 | ||
5551 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5552 | return MATCH_ERROR; | |
5553 | ||
c3005b0f DK |
5554 | /* Warn if it has the same name as an intrinsic. */ |
5555 | warn_intrinsic_shadow (sym, false); | |
5556 | ||
6de9cd9a DN |
5557 | return MATCH_YES; |
5558 | } | |
5559 | ||
5560 | ||
a8b3b0b6 CR |
5561 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5562 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 5563 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
5564 | encounter the BIND(C) before the declaration itself. Return |
5565 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5566 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5567 | or MATCH_YES if the specifier was correct and the binding label and | |
5568 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
5569 | current_ts. If allow_binding_name is false, no binding name may be |
5570 | given. */ | |
a8b3b0b6 CR |
5571 | |
5572 | match | |
1eabf70a | 5573 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 CR |
5574 | { |
5575 | /* binding label, if exists */ | |
5576 | char binding_label[GFC_MAX_SYMBOL_LEN + 1]; | |
5577 | match double_quote; | |
5578 | match single_quote; | |
a8b3b0b6 CR |
5579 | |
5580 | /* Initialize the flag that specifies whether we encountered a NAME= | |
5581 | specifier or not. */ | |
5582 | has_name_equals = 0; | |
5583 | ||
5584 | /* Init the first char to nil so we can catch if we don't have | |
5585 | the label (name attr) or the symbol name yet. */ | |
5586 | binding_label[0] = '\0'; | |
5587 | ||
5588 | /* This much we have to be able to match, in this order, if | |
5589 | there is a bind(c) label. */ | |
5590 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5591 | return MATCH_NO; | |
5592 | ||
5593 | /* Now see if there is a binding label, or if we've reached the | |
5594 | end of the bind(c) attribute without one. */ | |
5595 | if (gfc_match_char (',') == MATCH_YES) | |
5596 | { | |
5597 | if (gfc_match (" name = ") != MATCH_YES) | |
5598 | { | |
5599 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5600 | "at %C"); | |
5601 | /* should give an error message here */ | |
5602 | return MATCH_ERROR; | |
5603 | } | |
5604 | ||
5605 | has_name_equals = 1; | |
5606 | ||
5607 | /* Get the opening quote. */ | |
5608 | double_quote = MATCH_YES; | |
5609 | single_quote = MATCH_YES; | |
5610 | double_quote = gfc_match_char ('"'); | |
5611 | if (double_quote != MATCH_YES) | |
5612 | single_quote = gfc_match_char ('\''); | |
5613 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5614 | { | |
5615 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5616 | "at %C"); | |
5617 | return MATCH_ERROR; | |
5618 | } | |
5619 | ||
5620 | /* Grab the binding label, using functions that will not lower | |
5621 | case the names automatically. */ | |
5622 | if (gfc_match_name_C (binding_label) != MATCH_YES) | |
5623 | return MATCH_ERROR; | |
5624 | ||
5625 | /* Get the closing quotation. */ | |
5626 | if (double_quote == MATCH_YES) | |
5627 | { | |
5628 | if (gfc_match_char ('"') != MATCH_YES) | |
5629 | { | |
5630 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5631 | /* User started string with '"' so looked to match it. */ | |
5632 | return MATCH_ERROR; | |
5633 | } | |
5634 | } | |
5635 | else | |
5636 | { | |
5637 | if (gfc_match_char ('\'') != MATCH_YES) | |
5638 | { | |
5639 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5640 | /* User started string with "'" char. */ | |
5641 | return MATCH_ERROR; | |
5642 | } | |
5643 | } | |
5644 | } | |
5645 | ||
5646 | /* Get the required right paren. */ | |
5647 | if (gfc_match_char (')') != MATCH_YES) | |
5648 | { | |
5649 | gfc_error ("Missing closing paren for binding label at %C"); | |
5650 | return MATCH_ERROR; | |
5651 | } | |
5652 | ||
1eabf70a TB |
5653 | if (has_name_equals && !allow_binding_name) |
5654 | { | |
5655 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5656 | return MATCH_ERROR; | |
5657 | } | |
5658 | ||
5659 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5660 | { | |
5661 | gfc_error ("For dummy procedure %s, no binding name is " | |
5662 | "allowed in BIND(C) at %C", sym->name); | |
5663 | return MATCH_ERROR; | |
5664 | } | |
5665 | ||
5666 | ||
a8b3b0b6 CR |
5667 | /* Save the binding label to the symbol. If sym is null, we're |
5668 | probably matching the typespec attributes of a declaration and | |
5669 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
5670 | if (binding_label[0] != '\0') | |
5671 | { | |
5672 | if (sym != NULL) | |
5673 | { | |
c5b5a17a | 5674 | strcpy (sym->binding_label, binding_label); |
a8b3b0b6 CR |
5675 | } |
5676 | else | |
c5b5a17a | 5677 | strcpy (curr_binding_label, binding_label); |
a8b3b0b6 | 5678 | } |
1eabf70a | 5679 | else if (allow_binding_name) |
a8b3b0b6 CR |
5680 | { |
5681 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
5682 | can set the label for it here. |
5683 | If name="" or allow_binding_name is false, no C binding name is | |
5684 | created. */ | |
a8b3b0b6 CR |
5685 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
5686 | strncpy (sym->binding_label, sym->name, strlen (sym->name) + 1); | |
5687 | } | |
9e1d712c | 5688 | |
129d15a3 JW |
5689 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5690 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
5691 | { |
5692 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5693 | return MATCH_ERROR; | |
5694 | } | |
5695 | ||
a8b3b0b6 CR |
5696 | return MATCH_YES; |
5697 | } | |
5698 | ||
5699 | ||
1f2959f0 | 5700 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
5701 | |
5702 | static int | |
5703 | contained_procedure (void) | |
5704 | { | |
083de129 | 5705 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 5706 | |
083de129 TB |
5707 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5708 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5709 | return 1; | |
ddc9ce91 TS |
5710 | |
5711 | return 0; | |
5712 | } | |
5713 | ||
d51347f9 | 5714 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
5715 | interoperable with the corresponding C enumeration type, making |
5716 | sure that -fshort-enums is honored. */ | |
5717 | ||
5718 | static void | |
5719 | set_enum_kind(void) | |
5720 | { | |
5721 | enumerator_history *current_history = NULL; | |
5722 | int kind; | |
5723 | int i; | |
5724 | ||
5725 | if (max_enum == NULL || enum_history == NULL) | |
5726 | return; | |
5727 | ||
cab129d1 | 5728 | if (!flag_short_enums) |
d51347f9 TB |
5729 | return; |
5730 | ||
25d8f0a2 TS |
5731 | i = 0; |
5732 | do | |
5733 | { | |
5734 | kind = gfc_integer_kinds[i++].kind; | |
5735 | } | |
d51347f9 | 5736 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
5737 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5738 | kind) != ARITH_OK); | |
5739 | ||
5740 | current_history = enum_history; | |
5741 | while (current_history != NULL) | |
5742 | { | |
5743 | current_history->sym->ts.kind = kind; | |
5744 | current_history = current_history->next; | |
5745 | } | |
5746 | } | |
5747 | ||
636dff67 | 5748 | |
6de9cd9a | 5749 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
5750 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5751 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
5752 | |
5753 | match | |
636dff67 | 5754 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
5755 | { |
5756 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5757 | gfc_compile_state state; | |
5758 | locus old_loc; | |
5759 | const char *block_name; | |
5760 | const char *target; | |
ddc9ce91 | 5761 | int eos_ok; |
6de9cd9a DN |
5762 | match m; |
5763 | ||
63645982 | 5764 | old_loc = gfc_current_locus; |
6de9cd9a DN |
5765 | if (gfc_match ("end") != MATCH_YES) |
5766 | return MATCH_NO; | |
5767 | ||
5768 | state = gfc_current_state (); | |
636dff67 SK |
5769 | block_name = gfc_current_block () == NULL |
5770 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 5771 | |
03af1e4c | 5772 | switch (state) |
6de9cd9a | 5773 | { |
03af1e4c DK |
5774 | case COMP_ASSOCIATE: |
5775 | case COMP_BLOCK: | |
3a1fd30c | 5776 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
5777 | block_name = NULL; |
5778 | break; | |
5779 | ||
5780 | case COMP_CONTAINS: | |
5781 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 5782 | state = gfc_state_stack->previous->state; |
636dff67 SK |
5783 | block_name = gfc_state_stack->previous->sym == NULL |
5784 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
5785 | break; |
5786 | ||
5787 | default: | |
5788 | break; | |
6de9cd9a DN |
5789 | } |
5790 | ||
5791 | switch (state) | |
5792 | { | |
5793 | case COMP_NONE: | |
5794 | case COMP_PROGRAM: | |
5795 | *st = ST_END_PROGRAM; | |
5796 | target = " program"; | |
ddc9ce91 | 5797 | eos_ok = 1; |
6de9cd9a DN |
5798 | break; |
5799 | ||
5800 | case COMP_SUBROUTINE: | |
5801 | *st = ST_END_SUBROUTINE; | |
5802 | target = " subroutine"; | |
ddc9ce91 | 5803 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5804 | break; |
5805 | ||
5806 | case COMP_FUNCTION: | |
5807 | *st = ST_END_FUNCTION; | |
5808 | target = " function"; | |
ddc9ce91 | 5809 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5810 | break; |
5811 | ||
5812 | case COMP_BLOCK_DATA: | |
5813 | *st = ST_END_BLOCK_DATA; | |
5814 | target = " block data"; | |
ddc9ce91 | 5815 | eos_ok = 1; |
6de9cd9a DN |
5816 | break; |
5817 | ||
5818 | case COMP_MODULE: | |
5819 | *st = ST_END_MODULE; | |
5820 | target = " module"; | |
ddc9ce91 | 5821 | eos_ok = 1; |
6de9cd9a DN |
5822 | break; |
5823 | ||
5824 | case COMP_INTERFACE: | |
5825 | *st = ST_END_INTERFACE; | |
5826 | target = " interface"; | |
ddc9ce91 | 5827 | eos_ok = 0; |
6de9cd9a DN |
5828 | break; |
5829 | ||
5830 | case COMP_DERIVED: | |
30b608eb | 5831 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
5832 | *st = ST_END_TYPE; |
5833 | target = " type"; | |
ddc9ce91 | 5834 | eos_ok = 0; |
6de9cd9a DN |
5835 | break; |
5836 | ||
03af1e4c DK |
5837 | case COMP_ASSOCIATE: |
5838 | *st = ST_END_ASSOCIATE; | |
5839 | target = " associate"; | |
5840 | eos_ok = 0; | |
5841 | break; | |
5842 | ||
9abe5e56 DK |
5843 | case COMP_BLOCK: |
5844 | *st = ST_END_BLOCK; | |
5845 | target = " block"; | |
5846 | eos_ok = 0; | |
5847 | break; | |
5848 | ||
6de9cd9a DN |
5849 | case COMP_IF: |
5850 | *st = ST_ENDIF; | |
5851 | target = " if"; | |
ddc9ce91 | 5852 | eos_ok = 0; |
6de9cd9a DN |
5853 | break; |
5854 | ||
5855 | case COMP_DO: | |
5856 | *st = ST_ENDDO; | |
5857 | target = " do"; | |
ddc9ce91 | 5858 | eos_ok = 0; |
6de9cd9a DN |
5859 | break; |
5860 | ||
d0a4a61c TB |
5861 | case COMP_CRITICAL: |
5862 | *st = ST_END_CRITICAL; | |
5863 | target = " critical"; | |
5864 | eos_ok = 0; | |
5865 | break; | |
5866 | ||
6de9cd9a | 5867 | case COMP_SELECT: |
cf2b3c22 | 5868 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
5869 | *st = ST_END_SELECT; |
5870 | target = " select"; | |
ddc9ce91 | 5871 | eos_ok = 0; |
6de9cd9a DN |
5872 | break; |
5873 | ||
5874 | case COMP_FORALL: | |
5875 | *st = ST_END_FORALL; | |
5876 | target = " forall"; | |
ddc9ce91 | 5877 | eos_ok = 0; |
6de9cd9a DN |
5878 | break; |
5879 | ||
5880 | case COMP_WHERE: | |
5881 | *st = ST_END_WHERE; | |
5882 | target = " where"; | |
ddc9ce91 | 5883 | eos_ok = 0; |
6de9cd9a DN |
5884 | break; |
5885 | ||
25d8f0a2 TS |
5886 | case COMP_ENUM: |
5887 | *st = ST_END_ENUM; | |
5888 | target = " enum"; | |
5889 | eos_ok = 0; | |
5890 | last_initializer = NULL; | |
5891 | set_enum_kind (); | |
5892 | gfc_free_enum_history (); | |
5893 | break; | |
5894 | ||
6de9cd9a DN |
5895 | default: |
5896 | gfc_error ("Unexpected END statement at %C"); | |
5897 | goto cleanup; | |
5898 | } | |
5899 | ||
5900 | if (gfc_match_eos () == MATCH_YES) | |
5901 | { | |
272001a2 TB |
5902 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
5903 | { | |
5904 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: END statement " | |
5905 | "instead of %s statement at %L", | |
5906 | gfc_ascii_statement (*st), &old_loc) == FAILURE) | |
5907 | goto cleanup; | |
5908 | } | |
5909 | else if (!eos_ok) | |
6de9cd9a | 5910 | { |
66e4ab31 | 5911 | /* We would have required END [something]. */ |
59ce85b5 TS |
5912 | gfc_error ("%s statement expected at %L", |
5913 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
5914 | goto cleanup; |
5915 | } | |
5916 | ||
5917 | return MATCH_YES; | |
5918 | } | |
5919 | ||
5920 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
5921 | if (gfc_match (target) != MATCH_YES) | |
5922 | { | |
5923 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
5924 | goto cleanup; | |
5925 | } | |
5926 | ||
5927 | /* If we're at the end, make sure a block name wasn't required. */ | |
5928 | if (gfc_match_eos () == MATCH_YES) | |
5929 | { | |
5930 | ||
690af379 | 5931 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 5932 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 5933 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
5934 | return MATCH_YES; |
5935 | ||
9abe5e56 | 5936 | if (!block_name) |
6de9cd9a DN |
5937 | return MATCH_YES; |
5938 | ||
5939 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
5940 | block_name, gfc_ascii_statement (*st)); | |
5941 | ||
5942 | return MATCH_ERROR; | |
5943 | } | |
5944 | ||
5945 | /* END INTERFACE has a special handler for its several possible endings. */ | |
5946 | if (*st == ST_END_INTERFACE) | |
5947 | return gfc_match_end_interface (); | |
5948 | ||
66e4ab31 SK |
5949 | /* We haven't hit the end of statement, so what is left must be an |
5950 | end-name. */ | |
6de9cd9a DN |
5951 | m = gfc_match_space (); |
5952 | if (m == MATCH_YES) | |
5953 | m = gfc_match_name (name); | |
5954 | ||
5955 | if (m == MATCH_NO) | |
5956 | gfc_error ("Expected terminating name at %C"); | |
5957 | if (m != MATCH_YES) | |
5958 | goto cleanup; | |
5959 | ||
5960 | if (block_name == NULL) | |
5961 | goto syntax; | |
5962 | ||
3070bab4 | 5963 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a DN |
5964 | { |
5965 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
5966 | gfc_ascii_statement (*st)); | |
5967 | goto cleanup; | |
5968 | } | |
3070bab4 JW |
5969 | /* Procedure pointer as function result. */ |
5970 | else if (strcmp (block_name, "ppr@") == 0 | |
5971 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
5972 | { | |
5973 | gfc_error ("Expected label '%s' for %s statement at %C", | |
5974 | gfc_current_block ()->ns->proc_name->name, | |
5975 | gfc_ascii_statement (*st)); | |
5976 | goto cleanup; | |
5977 | } | |
6de9cd9a DN |
5978 | |
5979 | if (gfc_match_eos () == MATCH_YES) | |
5980 | return MATCH_YES; | |
5981 | ||
5982 | syntax: | |
5983 | gfc_syntax_error (*st); | |
5984 | ||
5985 | cleanup: | |
63645982 | 5986 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5987 | return MATCH_ERROR; |
5988 | } | |
5989 | ||
5990 | ||
5991 | ||
5992 | /***************** Attribute declaration statements ****************/ | |
5993 | ||
5994 | /* Set the attribute of a single variable. */ | |
5995 | ||
5996 | static match | |
5997 | attr_decl1 (void) | |
5998 | { | |
5999 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6000 | gfc_array_spec *as; | |
6001 | gfc_symbol *sym; | |
6002 | locus var_locus; | |
6003 | match m; | |
6004 | ||
6005 | as = NULL; | |
6006 | ||
6007 | m = gfc_match_name (name); | |
6008 | if (m != MATCH_YES) | |
6009 | goto cleanup; | |
6010 | ||
08a6b8e0 | 6011 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6012 | return MATCH_ERROR; |
6013 | ||
bb9de0c4 JW |
6014 | if (check_function_name (name) == FAILURE) |
6015 | { | |
6016 | m = MATCH_ERROR; | |
6017 | goto cleanup; | |
6018 | } | |
6019 | ||
63645982 | 6020 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6021 | |
6022 | /* Deal with possible array specification for certain attributes. */ | |
6023 | if (current_attr.dimension | |
be59db2d | 6024 | || current_attr.codimension |
6de9cd9a DN |
6025 | || current_attr.allocatable |
6026 | || current_attr.pointer | |
6027 | || current_attr.target) | |
6028 | { | |
be59db2d TB |
6029 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6030 | !current_attr.dimension | |
6031 | && !current_attr.pointer | |
6032 | && !current_attr.target); | |
6de9cd9a DN |
6033 | if (m == MATCH_ERROR) |
6034 | goto cleanup; | |
6035 | ||
6036 | if (current_attr.dimension && m == MATCH_NO) | |
6037 | { | |
636dff67 SK |
6038 | gfc_error ("Missing array specification at %L in DIMENSION " |
6039 | "statement", &var_locus); | |
6de9cd9a DN |
6040 | m = MATCH_ERROR; |
6041 | goto cleanup; | |
6042 | } | |
6043 | ||
1283ab12 TB |
6044 | if (current_attr.dimension && sym->value) |
6045 | { | |
6046 | gfc_error ("Dimensions specified for %s at %L after its " | |
6047 | "initialisation", sym->name, &var_locus); | |
6048 | m = MATCH_ERROR; | |
6049 | goto cleanup; | |
6050 | } | |
6051 | ||
be59db2d TB |
6052 | if (current_attr.codimension && m == MATCH_NO) |
6053 | { | |
6054 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6055 | "statement", &var_locus); | |
6056 | m = MATCH_ERROR; | |
6057 | goto cleanup; | |
6058 | } | |
6059 | ||
6de9cd9a DN |
6060 | if ((current_attr.allocatable || current_attr.pointer) |
6061 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6062 | { | |
636dff67 | 6063 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6064 | m = MATCH_ERROR; |
6065 | goto cleanup; | |
6066 | } | |
6067 | } | |
6068 | ||
2e23972e JW |
6069 | /* Update symbol table. DIMENSION attribute is set in |
6070 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6071 | to the first component, or '_data' field. */ |
d40477b4 | 6072 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6073 | { |
b04533af | 6074 | if (gfc_copy_attr (&CLASS_DATA (sym)->attr, ¤t_attr, &var_locus) |
7a08eda1 | 6075 | == FAILURE) |
2e23972e JW |
6076 | { |
6077 | m = MATCH_ERROR; | |
6078 | goto cleanup; | |
6079 | } | |
2e23972e JW |
6080 | } |
6081 | else | |
6082 | { | |
be59db2d TB |
6083 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
6084 | && gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus) == FAILURE) | |
2e23972e JW |
6085 | { |
6086 | m = MATCH_ERROR; | |
6087 | goto cleanup; | |
6088 | } | |
6de9cd9a | 6089 | } |
d40477b4 | 6090 | |
528622fd | 6091 | if (sym->ts.type == BT_CLASS |
96d9b22c JW |
6092 | && gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false) == FAILURE) |
6093 | { | |
6094 | m = MATCH_ERROR; | |
6095 | goto cleanup; | |
6096 | } | |
6de9cd9a DN |
6097 | |
6098 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
6099 | { | |
6100 | m = MATCH_ERROR; | |
6101 | goto cleanup; | |
6102 | } | |
d51347f9 | 6103 | |
83d890b9 AL |
6104 | if (sym->attr.cray_pointee && sym->as != NULL) |
6105 | { | |
6106 | /* Fix the array spec. */ | |
6107 | m = gfc_mod_pointee_as (sym->as); | |
6108 | if (m == MATCH_ERROR) | |
6109 | goto cleanup; | |
6110 | } | |
6de9cd9a | 6111 | |
7114edca | 6112 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
1902704e PT |
6113 | { |
6114 | m = MATCH_ERROR; | |
6115 | goto cleanup; | |
6116 | } | |
6117 | ||
6de9cd9a DN |
6118 | if ((current_attr.external || current_attr.intrinsic) |
6119 | && sym->attr.flavor != FL_PROCEDURE | |
231b2fcc | 6120 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6121 | { |
6122 | m = MATCH_ERROR; | |
6123 | goto cleanup; | |
6124 | } | |
6125 | ||
3070bab4 JW |
6126 | add_hidden_procptr_result (sym); |
6127 | ||
6de9cd9a DN |
6128 | return MATCH_YES; |
6129 | ||
6130 | cleanup: | |
6131 | gfc_free_array_spec (as); | |
6132 | return m; | |
6133 | } | |
6134 | ||
6135 | ||
6136 | /* Generic attribute declaration subroutine. Used for attributes that | |
6137 | just have a list of names. */ | |
6138 | ||
6139 | static match | |
6140 | attr_decl (void) | |
6141 | { | |
6142 | match m; | |
6143 | ||
6144 | /* Gobble the optional double colon, by simply ignoring the result | |
6145 | of gfc_match(). */ | |
6146 | gfc_match (" ::"); | |
6147 | ||
6148 | for (;;) | |
6149 | { | |
6150 | m = attr_decl1 (); | |
6151 | if (m != MATCH_YES) | |
6152 | break; | |
6153 | ||
6154 | if (gfc_match_eos () == MATCH_YES) | |
6155 | { | |
6156 | m = MATCH_YES; | |
6157 | break; | |
6158 | } | |
6159 | ||
6160 | if (gfc_match_char (',') != MATCH_YES) | |
6161 | { | |
6162 | gfc_error ("Unexpected character in variable list at %C"); | |
6163 | m = MATCH_ERROR; | |
6164 | break; | |
6165 | } | |
6166 | } | |
6167 | ||
6168 | return m; | |
6169 | } | |
6170 | ||
6171 | ||
83d890b9 AL |
6172 | /* This routine matches Cray Pointer declarations of the form: |
6173 | pointer ( <pointer>, <pointee> ) | |
6174 | or | |
d51347f9 TB |
6175 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6176 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6177 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6178 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6179 | the pointee. For the statement |
83d890b9 AL |
6180 | pointer (ipt, ar(10)) |
6181 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6182 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6183 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6184 | |
6185 | static match | |
6186 | cray_pointer_decl (void) | |
6187 | { | |
6188 | match m; | |
be59db2d | 6189 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6190 | gfc_symbol *cptr; /* Pointer symbol. */ |
6191 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6192 | locus var_locus; | |
6193 | bool done = false; | |
6194 | ||
6195 | while (!done) | |
6196 | { | |
6197 | if (gfc_match_char ('(') != MATCH_YES) | |
6198 | { | |
6199 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 6200 | return MATCH_ERROR; |
83d890b9 | 6201 | } |
d51347f9 | 6202 | |
83d890b9 AL |
6203 | /* Match pointer. */ |
6204 | var_locus = gfc_current_locus; | |
6205 | gfc_clear_attr (¤t_attr); | |
6206 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6207 | current_ts.type = BT_INTEGER; | |
6208 | current_ts.kind = gfc_index_integer_kind; | |
6209 | ||
d51347f9 | 6210 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6211 | if (m != MATCH_YES) |
6212 | { | |
6213 | gfc_error ("Expected variable name at %C"); | |
6214 | return m; | |
6215 | } | |
d51347f9 | 6216 | |
83d890b9 AL |
6217 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
6218 | return MATCH_ERROR; | |
6219 | ||
d51347f9 | 6220 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6221 | |
6222 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6223 | { | |
6224 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6225 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6226 | } |
6227 | else if (cptr->ts.type != BT_INTEGER) | |
6228 | { | |
e25a0da3 | 6229 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6230 | return MATCH_ERROR; |
6231 | } | |
6232 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6233 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 6234 | " memory addresses require %d bytes", |
636dff67 | 6235 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6236 | |
6237 | if (gfc_match_char (',') != MATCH_YES) | |
6238 | { | |
6239 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6240 | return MATCH_ERROR; |
83d890b9 AL |
6241 | } |
6242 | ||
d51347f9 | 6243 | /* Match Pointee. */ |
83d890b9 AL |
6244 | var_locus = gfc_current_locus; |
6245 | gfc_clear_attr (¤t_attr); | |
6246 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6247 | current_ts.type = BT_UNKNOWN; | |
6248 | current_ts.kind = 0; | |
6249 | ||
6250 | m = gfc_match_symbol (&cpte, 0); | |
6251 | if (m != MATCH_YES) | |
6252 | { | |
6253 | gfc_error ("Expected variable name at %C"); | |
6254 | return m; | |
6255 | } | |
d51347f9 | 6256 | |
83d890b9 | 6257 | /* Check for an optional array spec. */ |
be59db2d | 6258 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6259 | if (m == MATCH_ERROR) |
6260 | { | |
6261 | gfc_free_array_spec (as); | |
6262 | return m; | |
6263 | } | |
6264 | else if (m == MATCH_NO) | |
6265 | { | |
6266 | gfc_free_array_spec (as); | |
6267 | as = NULL; | |
6268 | } | |
6269 | ||
6270 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
6271 | return MATCH_ERROR; | |
6272 | ||
6273 | gfc_set_sym_referenced (cpte); | |
6274 | ||
6275 | if (cpte->as == NULL) | |
6276 | { | |
6277 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
6278 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
6279 | } | |
6280 | else if (as != NULL) | |
6281 | { | |
e25a0da3 | 6282 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6283 | gfc_free_array_spec (as); |
6284 | return MATCH_ERROR; | |
6285 | } | |
6286 | ||
6287 | as = NULL; | |
6288 | ||
6289 | if (cpte->as != NULL) | |
6290 | { | |
6291 | /* Fix array spec. */ | |
6292 | m = gfc_mod_pointee_as (cpte->as); | |
6293 | if (m == MATCH_ERROR) | |
6294 | return m; | |
6295 | } | |
6296 | ||
6297 | /* Point the Pointee at the Pointer. */ | |
b122dc6a | 6298 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6299 | |
6300 | if (gfc_match_char (')') != MATCH_YES) | |
6301 | { | |
6302 | gfc_error ("Expected \")\" at %C"); | |
6303 | return MATCH_ERROR; | |
6304 | } | |
6305 | m = gfc_match_char (','); | |
6306 | if (m != MATCH_YES) | |
6307 | done = true; /* Stop searching for more declarations. */ | |
6308 | ||
6309 | } | |
6310 | ||
6311 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
6312 | || gfc_match_eos () != MATCH_YES) | |
6313 | { | |
6314 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6315 | return MATCH_ERROR; | |
6316 | } | |
6317 | return MATCH_YES; | |
6318 | } | |
6319 | ||
6320 | ||
6de9cd9a DN |
6321 | match |
6322 | gfc_match_external (void) | |
6323 | { | |
6324 | ||
6325 | gfc_clear_attr (¤t_attr); | |
1902704e | 6326 | current_attr.external = 1; |
6de9cd9a DN |
6327 | |
6328 | return attr_decl (); | |
6329 | } | |
6330 | ||
6331 | ||
6de9cd9a DN |
6332 | match |
6333 | gfc_match_intent (void) | |
6334 | { | |
6335 | sym_intent intent; | |
6336 | ||
9abe5e56 DK |
6337 | /* This is not allowed within a BLOCK construct! */ |
6338 | if (gfc_current_state () == COMP_BLOCK) | |
6339 | { | |
6340 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6341 | return MATCH_ERROR; | |
6342 | } | |
6343 | ||
6de9cd9a DN |
6344 | intent = match_intent_spec (); |
6345 | if (intent == INTENT_UNKNOWN) | |
6346 | return MATCH_ERROR; | |
6347 | ||
6348 | gfc_clear_attr (¤t_attr); | |
1902704e | 6349 | current_attr.intent = intent; |
6de9cd9a DN |
6350 | |
6351 | return attr_decl (); | |
6352 | } | |
6353 | ||
6354 | ||
6355 | match | |
6356 | gfc_match_intrinsic (void) | |
6357 | { | |
6358 | ||
6359 | gfc_clear_attr (¤t_attr); | |
1902704e | 6360 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6361 | |
6362 | return attr_decl (); | |
6363 | } | |
6364 | ||
6365 | ||
6366 | match | |
6367 | gfc_match_optional (void) | |
6368 | { | |
9abe5e56 DK |
6369 | /* This is not allowed within a BLOCK construct! */ |
6370 | if (gfc_current_state () == COMP_BLOCK) | |
6371 | { | |
6372 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6373 | return MATCH_ERROR; | |
6374 | } | |
6de9cd9a DN |
6375 | |
6376 | gfc_clear_attr (¤t_attr); | |
1902704e | 6377 | current_attr.optional = 1; |
6de9cd9a DN |
6378 | |
6379 | return attr_decl (); | |
6380 | } | |
6381 | ||
6382 | ||
6383 | match | |
6384 | gfc_match_pointer (void) | |
6385 | { | |
83d890b9 | 6386 | gfc_gobble_whitespace (); |
8fc541d3 | 6387 | if (gfc_peek_ascii_char () == '(') |
83d890b9 AL |
6388 | { |
6389 | if (!gfc_option.flag_cray_pointer) | |
6390 | { | |
636dff67 SK |
6391 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6392 | "flag"); | |
83d890b9 AL |
6393 | return MATCH_ERROR; |
6394 | } | |
6395 | return cray_pointer_decl (); | |
6396 | } | |
6397 | else | |
6398 | { | |
6399 | gfc_clear_attr (¤t_attr); | |
1902704e | 6400 | current_attr.pointer = 1; |
83d890b9 AL |
6401 | |
6402 | return attr_decl (); | |
6403 | } | |
6de9cd9a DN |
6404 | } |
6405 | ||
6406 | ||
6407 | match | |
6408 | gfc_match_allocatable (void) | |
6409 | { | |
6de9cd9a | 6410 | gfc_clear_attr (¤t_attr); |
1902704e | 6411 | current_attr.allocatable = 1; |
6de9cd9a DN |
6412 | |
6413 | return attr_decl (); | |
6414 | } | |
6415 | ||
6416 | ||
be59db2d TB |
6417 | match |
6418 | gfc_match_codimension (void) | |
6419 | { | |
6420 | gfc_clear_attr (¤t_attr); | |
6421 | current_attr.codimension = 1; | |
6422 | ||
6423 | return attr_decl (); | |
6424 | } | |
6425 | ||
6426 | ||
fe4e525c TB |
6427 | match |
6428 | gfc_match_contiguous (void) | |
6429 | { | |
6430 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: CONTIGUOUS statement at %C") | |
6431 | == FAILURE) | |
6432 | return MATCH_ERROR; | |
6433 | ||
6434 | gfc_clear_attr (¤t_attr); | |
6435 | current_attr.contiguous = 1; | |
6436 | ||
6437 | return attr_decl (); | |
6438 | } | |
6439 | ||
6440 | ||
6de9cd9a DN |
6441 | match |
6442 | gfc_match_dimension (void) | |
6443 | { | |
6de9cd9a | 6444 | gfc_clear_attr (¤t_attr); |
1902704e | 6445 | current_attr.dimension = 1; |
6de9cd9a DN |
6446 | |
6447 | return attr_decl (); | |
6448 | } | |
6449 | ||
6450 | ||
6451 | match | |
6452 | gfc_match_target (void) | |
6453 | { | |
6de9cd9a | 6454 | gfc_clear_attr (¤t_attr); |
1902704e | 6455 | current_attr.target = 1; |
6de9cd9a DN |
6456 | |
6457 | return attr_decl (); | |
6458 | } | |
6459 | ||
6460 | ||
6461 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6462 | statement. */ | |
6463 | ||
6464 | static match | |
6465 | access_attr_decl (gfc_statement st) | |
6466 | { | |
6467 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6468 | interface_type type; | |
6469 | gfc_user_op *uop; | |
6470 | gfc_symbol *sym; | |
a1ee985f | 6471 | gfc_intrinsic_op op; |
6de9cd9a DN |
6472 | match m; |
6473 | ||
6474 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6475 | goto done; | |
6476 | ||
6477 | for (;;) | |
6478 | { | |
a1ee985f | 6479 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
6480 | if (m == MATCH_NO) |
6481 | goto syntax; | |
6482 | if (m == MATCH_ERROR) | |
6483 | return MATCH_ERROR; | |
6484 | ||
6485 | switch (type) | |
6486 | { | |
6487 | case INTERFACE_NAMELESS: | |
9e1d712c | 6488 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
6489 | goto syntax; |
6490 | ||
6491 | case INTERFACE_GENERIC: | |
6492 | if (gfc_get_symbol (name, NULL, &sym)) | |
6493 | goto done; | |
6494 | ||
636dff67 SK |
6495 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
6496 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
231b2fcc | 6497 | sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6498 | return MATCH_ERROR; |
6499 | ||
6500 | break; | |
6501 | ||
6502 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 6503 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 6504 | { |
fb03a37e TK |
6505 | gfc_intrinsic_op other_op; |
6506 | ||
a1ee985f | 6507 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 6508 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
6509 | |
6510 | /* Handle the case if there is another op with the same | |
6511 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6512 | other_op = gfc_equivalent_op (op); | |
6513 | ||
6514 | if (other_op != INTRINSIC_NONE) | |
6515 | gfc_current_ns->operator_access[other_op] = | |
6516 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6517 | ||
6de9cd9a DN |
6518 | } |
6519 | else | |
6520 | { | |
6521 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 6522 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
6523 | goto done; |
6524 | } | |
6525 | ||
6526 | break; | |
6527 | ||
6528 | case INTERFACE_USER_OP: | |
6529 | uop = gfc_get_uop (name); | |
6530 | ||
6531 | if (uop->access == ACCESS_UNKNOWN) | |
6532 | { | |
636dff67 SK |
6533 | uop->access = (st == ST_PUBLIC) |
6534 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
6535 | } |
6536 | else | |
6537 | { | |
636dff67 SK |
6538 | gfc_error ("Access specification of the .%s. operator at %C " |
6539 | "has already been specified", sym->name); | |
6de9cd9a DN |
6540 | goto done; |
6541 | } | |
6542 | ||
6543 | break; | |
6544 | } | |
6545 | ||
6546 | if (gfc_match_char (',') == MATCH_NO) | |
6547 | break; | |
6548 | } | |
6549 | ||
6550 | if (gfc_match_eos () != MATCH_YES) | |
6551 | goto syntax; | |
6552 | return MATCH_YES; | |
6553 | ||
6554 | syntax: | |
6555 | gfc_syntax_error (st); | |
6556 | ||
6557 | done: | |
6558 | return MATCH_ERROR; | |
6559 | } | |
6560 | ||
6561 | ||
ee7e677f TB |
6562 | match |
6563 | gfc_match_protected (void) | |
6564 | { | |
6565 | gfc_symbol *sym; | |
6566 | match m; | |
6567 | ||
6568 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6569 | { | |
6570 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6571 | "part of a module"); | |
6572 | return MATCH_ERROR; | |
6573 | ||
6574 | } | |
6575 | ||
636dff67 | 6576 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED statement at %C") |
ee7e677f TB |
6577 | == FAILURE) |
6578 | return MATCH_ERROR; | |
6579 | ||
6580 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6581 | { | |
6582 | return MATCH_ERROR; | |
6583 | } | |
6584 | ||
6585 | if (gfc_match_eos () == MATCH_YES) | |
6586 | goto syntax; | |
6587 | ||
6588 | for(;;) | |
6589 | { | |
6590 | m = gfc_match_symbol (&sym, 0); | |
6591 | switch (m) | |
6592 | { | |
6593 | case MATCH_YES: | |
636dff67 SK |
6594 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
6595 | == FAILURE) | |
ee7e677f TB |
6596 | return MATCH_ERROR; |
6597 | goto next_item; | |
6598 | ||
6599 | case MATCH_NO: | |
6600 | break; | |
6601 | ||
6602 | case MATCH_ERROR: | |
6603 | return MATCH_ERROR; | |
6604 | } | |
6605 | ||
6606 | next_item: | |
6607 | if (gfc_match_eos () == MATCH_YES) | |
6608 | break; | |
6609 | if (gfc_match_char (',') != MATCH_YES) | |
6610 | goto syntax; | |
6611 | } | |
6612 | ||
6613 | return MATCH_YES; | |
6614 | ||
6615 | syntax: | |
6616 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6617 | return MATCH_ERROR; | |
6618 | } | |
6619 | ||
6620 | ||
86bf520d | 6621 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 6622 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
6623 | type declaration or a module. */ |
6624 | ||
6625 | match | |
636dff67 | 6626 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
6627 | { |
6628 | ||
6629 | if (gfc_match ("private") != MATCH_YES) | |
6630 | return MATCH_NO; | |
6631 | ||
d51347f9 | 6632 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
6633 | && !(gfc_current_state () == COMP_DERIVED |
6634 | && gfc_state_stack->previous | |
6635 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6636 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6637 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6638 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
6639 | { |
6640 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6641 | "specification part of a module"); | |
6642 | return MATCH_ERROR; | |
6643 | } | |
6644 | ||
6de9cd9a DN |
6645 | if (gfc_current_state () == COMP_DERIVED) |
6646 | { | |
6647 | if (gfc_match_eos () == MATCH_YES) | |
6648 | { | |
6649 | *st = ST_PRIVATE; | |
6650 | return MATCH_YES; | |
6651 | } | |
6652 | ||
6653 | gfc_syntax_error (ST_PRIVATE); | |
6654 | return MATCH_ERROR; | |
6655 | } | |
6656 | ||
6657 | if (gfc_match_eos () == MATCH_YES) | |
6658 | { | |
6659 | *st = ST_PRIVATE; | |
6660 | return MATCH_YES; | |
6661 | } | |
6662 | ||
6663 | *st = ST_ATTR_DECL; | |
6664 | return access_attr_decl (ST_PRIVATE); | |
6665 | } | |
6666 | ||
6667 | ||
6668 | match | |
636dff67 | 6669 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
6670 | { |
6671 | ||
6672 | if (gfc_match ("public") != MATCH_YES) | |
6673 | return MATCH_NO; | |
6674 | ||
d51347f9 TB |
6675 | if (gfc_current_state () != COMP_MODULE) |
6676 | { | |
6677 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6678 | "specification part of a module"); | |
6679 | return MATCH_ERROR; | |
6680 | } | |
6681 | ||
6de9cd9a DN |
6682 | if (gfc_match_eos () == MATCH_YES) |
6683 | { | |
6684 | *st = ST_PUBLIC; | |
6685 | return MATCH_YES; | |
6686 | } | |
6687 | ||
6688 | *st = ST_ATTR_DECL; | |
6689 | return access_attr_decl (ST_PUBLIC); | |
6690 | } | |
6691 | ||
6692 | ||
6693 | /* Workhorse for gfc_match_parameter. */ | |
6694 | ||
6695 | static match | |
6696 | do_parm (void) | |
6697 | { | |
6698 | gfc_symbol *sym; | |
6699 | gfc_expr *init; | |
6700 | match m; | |
7919373d | 6701 | gfc_try t; |
6de9cd9a DN |
6702 | |
6703 | m = gfc_match_symbol (&sym, 0); | |
6704 | if (m == MATCH_NO) | |
6705 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6706 | ||
6707 | if (m != MATCH_YES) | |
6708 | return m; | |
6709 | ||
6710 | if (gfc_match_char ('=') == MATCH_NO) | |
6711 | { | |
6712 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6713 | return MATCH_ERROR; | |
6714 | } | |
6715 | ||
6716 | m = gfc_match_init_expr (&init); | |
6717 | if (m == MATCH_NO) | |
6718 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6719 | if (m != MATCH_YES) | |
6720 | return m; | |
6721 | ||
6722 | if (sym->ts.type == BT_UNKNOWN | |
6723 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
6724 | { | |
6725 | m = MATCH_ERROR; | |
6726 | goto cleanup; | |
6727 | } | |
6728 | ||
6729 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
231b2fcc | 6730 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6731 | { |
6732 | m = MATCH_ERROR; | |
6733 | goto cleanup; | |
6734 | } | |
6735 | ||
1283ab12 TB |
6736 | if (sym->value) |
6737 | { | |
6738 | gfc_error ("Initializing already initialized variable at %C"); | |
6739 | m = MATCH_ERROR; | |
6740 | goto cleanup; | |
6741 | } | |
6742 | ||
7919373d TB |
6743 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
6744 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
6de9cd9a DN |
6745 | |
6746 | cleanup: | |
6747 | gfc_free_expr (init); | |
6748 | return m; | |
6749 | } | |
6750 | ||
6751 | ||
6752 | /* Match a parameter statement, with the weird syntax that these have. */ | |
6753 | ||
6754 | match | |
6755 | gfc_match_parameter (void) | |
6756 | { | |
6757 | match m; | |
6758 | ||
6759 | if (gfc_match_char ('(') == MATCH_NO) | |
6760 | return MATCH_NO; | |
6761 | ||
6762 | for (;;) | |
6763 | { | |
6764 | m = do_parm (); | |
6765 | if (m != MATCH_YES) | |
6766 | break; | |
6767 | ||
6768 | if (gfc_match (" )%t") == MATCH_YES) | |
6769 | break; | |
6770 | ||
6771 | if (gfc_match_char (',') != MATCH_YES) | |
6772 | { | |
6773 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
6774 | m = MATCH_ERROR; | |
6775 | break; | |
6776 | } | |
6777 | } | |
6778 | ||
6779 | return m; | |
6780 | } | |
6781 | ||
6782 | ||
6783 | /* Save statements have a special syntax. */ | |
6784 | ||
6785 | match | |
6786 | gfc_match_save (void) | |
6787 | { | |
9056bd70 TS |
6788 | char n[GFC_MAX_SYMBOL_LEN+1]; |
6789 | gfc_common_head *c; | |
6de9cd9a DN |
6790 | gfc_symbol *sym; |
6791 | match m; | |
6792 | ||
6793 | if (gfc_match_eos () == MATCH_YES) | |
6794 | { | |
6795 | if (gfc_current_ns->seen_save) | |
6796 | { | |
636dff67 SK |
6797 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
6798 | "follows previous SAVE statement") | |
09e87839 AL |
6799 | == FAILURE) |
6800 | return MATCH_ERROR; | |
6de9cd9a DN |
6801 | } |
6802 | ||
6803 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
6804 | return MATCH_YES; | |
6805 | } | |
6806 | ||
6807 | if (gfc_current_ns->save_all) | |
6808 | { | |
636dff67 SK |
6809 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
6810 | "blanket SAVE statement") | |
09e87839 AL |
6811 | == FAILURE) |
6812 | return MATCH_ERROR; | |
6de9cd9a DN |
6813 | } |
6814 | ||
6815 | gfc_match (" ::"); | |
6816 | ||
6817 | for (;;) | |
6818 | { | |
6819 | m = gfc_match_symbol (&sym, 0); | |
6820 | switch (m) | |
6821 | { | |
6822 | case MATCH_YES: | |
80f95228 JW |
6823 | if (gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
6824 | &gfc_current_locus) == FAILURE) | |
6de9cd9a DN |
6825 | return MATCH_ERROR; |
6826 | goto next_item; | |
6827 | ||
6828 | case MATCH_NO: | |
6829 | break; | |
6830 | ||
6831 | case MATCH_ERROR: | |
6832 | return MATCH_ERROR; | |
6833 | } | |
6834 | ||
9056bd70 | 6835 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
6836 | if (m == MATCH_ERROR) |
6837 | return MATCH_ERROR; | |
6838 | if (m == MATCH_NO) | |
6839 | goto syntax; | |
6840 | ||
53814b8f | 6841 | c = gfc_get_common (n, 0); |
9056bd70 TS |
6842 | c->saved = 1; |
6843 | ||
6de9cd9a DN |
6844 | gfc_current_ns->seen_save = 1; |
6845 | ||
6846 | next_item: | |
6847 | if (gfc_match_eos () == MATCH_YES) | |
6848 | break; | |
6849 | if (gfc_match_char (',') != MATCH_YES) | |
6850 | goto syntax; | |
6851 | } | |
6852 | ||
6853 | return MATCH_YES; | |
6854 | ||
6855 | syntax: | |
6856 | gfc_error ("Syntax error in SAVE statement at %C"); | |
6857 | return MATCH_ERROR; | |
6858 | } | |
6859 | ||
6860 | ||
06469efd PT |
6861 | match |
6862 | gfc_match_value (void) | |
6863 | { | |
6864 | gfc_symbol *sym; | |
6865 | match m; | |
6866 | ||
9abe5e56 DK |
6867 | /* This is not allowed within a BLOCK construct! */ |
6868 | if (gfc_current_state () == COMP_BLOCK) | |
6869 | { | |
6870 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
6871 | return MATCH_ERROR; | |
6872 | } | |
6873 | ||
636dff67 | 6874 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE statement at %C") |
06469efd PT |
6875 | == FAILURE) |
6876 | return MATCH_ERROR; | |
6877 | ||
6878 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6879 | { | |
6880 | return MATCH_ERROR; | |
6881 | } | |
6882 | ||
6883 | if (gfc_match_eos () == MATCH_YES) | |
6884 | goto syntax; | |
6885 | ||
6886 | for(;;) | |
6887 | { | |
6888 | m = gfc_match_symbol (&sym, 0); | |
6889 | switch (m) | |
6890 | { | |
6891 | case MATCH_YES: | |
636dff67 SK |
6892 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
6893 | == FAILURE) | |
06469efd PT |
6894 | return MATCH_ERROR; |
6895 | goto next_item; | |
6896 | ||
6897 | case MATCH_NO: | |
6898 | break; | |
6899 | ||
6900 | case MATCH_ERROR: | |
6901 | return MATCH_ERROR; | |
6902 | } | |
6903 | ||
6904 | next_item: | |
6905 | if (gfc_match_eos () == MATCH_YES) | |
6906 | break; | |
6907 | if (gfc_match_char (',') != MATCH_YES) | |
6908 | goto syntax; | |
6909 | } | |
6910 | ||
6911 | return MATCH_YES; | |
6912 | ||
6913 | syntax: | |
6914 | gfc_error ("Syntax error in VALUE statement at %C"); | |
6915 | return MATCH_ERROR; | |
6916 | } | |
6917 | ||
66e4ab31 | 6918 | |
775e6c3a TB |
6919 | match |
6920 | gfc_match_volatile (void) | |
6921 | { | |
6922 | gfc_symbol *sym; | |
6923 | match m; | |
6924 | ||
636dff67 | 6925 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VOLATILE statement at %C") |
775e6c3a TB |
6926 | == FAILURE) |
6927 | return MATCH_ERROR; | |
6928 | ||
6929 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6930 | { | |
6931 | return MATCH_ERROR; | |
6932 | } | |
6933 | ||
6934 | if (gfc_match_eos () == MATCH_YES) | |
6935 | goto syntax; | |
6936 | ||
6937 | for(;;) | |
6938 | { | |
9bce3c1c | 6939 | /* VOLATILE is special because it can be added to host-associated |
be59db2d | 6940 | symbols locally. Except for coarrays. */ |
9bce3c1c | 6941 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
6942 | switch (m) |
6943 | { | |
6944 | case MATCH_YES: | |
be59db2d TB |
6945 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
6946 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
6947 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
6948 | { | |
6949 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
6950 | "%C, which is use-/host-associated", sym->name); | |
6951 | return MATCH_ERROR; | |
6952 | } | |
636dff67 SK |
6953 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
6954 | == FAILURE) | |
775e6c3a TB |
6955 | return MATCH_ERROR; |
6956 | goto next_item; | |
6957 | ||
6958 | case MATCH_NO: | |
6959 | break; | |
6960 | ||
6961 | case MATCH_ERROR: | |
6962 | return MATCH_ERROR; | |
6963 | } | |
6964 | ||
6965 | next_item: | |
6966 | if (gfc_match_eos () == MATCH_YES) | |
6967 | break; | |
6968 | if (gfc_match_char (',') != MATCH_YES) | |
6969 | goto syntax; | |
6970 | } | |
6971 | ||
6972 | return MATCH_YES; | |
6973 | ||
6974 | syntax: | |
6975 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
6976 | return MATCH_ERROR; | |
6977 | } | |
6978 | ||
6979 | ||
1eee5628 TB |
6980 | match |
6981 | gfc_match_asynchronous (void) | |
6982 | { | |
6983 | gfc_symbol *sym; | |
6984 | match m; | |
6985 | ||
6986 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ASYNCHRONOUS statement at %C") | |
6987 | == FAILURE) | |
6988 | return MATCH_ERROR; | |
6989 | ||
6990 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6991 | { | |
6992 | return MATCH_ERROR; | |
6993 | } | |
6994 | ||
6995 | if (gfc_match_eos () == MATCH_YES) | |
6996 | goto syntax; | |
6997 | ||
6998 | for(;;) | |
6999 | { | |
7000 | /* ASYNCHRONOUS is special because it can be added to host-associated | |
7001 | symbols locally. */ | |
7002 | m = gfc_match_symbol (&sym, 1); | |
7003 | switch (m) | |
7004 | { | |
7005 | case MATCH_YES: | |
7006 | if (gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus) | |
7007 | == FAILURE) | |
7008 | return MATCH_ERROR; | |
7009 | goto next_item; | |
7010 | ||
7011 | case MATCH_NO: | |
7012 | break; | |
7013 | ||
7014 | case MATCH_ERROR: | |
7015 | return MATCH_ERROR; | |
7016 | } | |
7017 | ||
7018 | next_item: | |
7019 | if (gfc_match_eos () == MATCH_YES) | |
7020 | break; | |
7021 | if (gfc_match_char (',') != MATCH_YES) | |
7022 | goto syntax; | |
7023 | } | |
7024 | ||
7025 | return MATCH_YES; | |
7026 | ||
7027 | syntax: | |
7028 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7029 | return MATCH_ERROR; | |
7030 | } | |
7031 | ||
7032 | ||
6de9cd9a DN |
7033 | /* Match a module procedure statement. Note that we have to modify |
7034 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7035 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7036 | |
7037 | match | |
7038 | gfc_match_modproc (void) | |
7039 | { | |
7040 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7041 | gfc_symbol *sym; | |
7042 | match m; | |
162b5a21 | 7043 | locus old_locus; |
060fca4a | 7044 | gfc_namespace *module_ns; |
2b77e908 | 7045 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7046 | |
7047 | if (gfc_state_stack->state != COMP_INTERFACE | |
7048 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7049 | || current_interface.type == INTERFACE_NAMELESS |
7050 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7051 | { |
636dff67 SK |
7052 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7053 | "interface"); | |
6de9cd9a DN |
7054 | return MATCH_ERROR; |
7055 | } | |
7056 | ||
060fca4a PT |
7057 | module_ns = gfc_current_ns->parent; |
7058 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7059 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7060 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7061 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7062 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7063 | break; |
7064 | ||
7065 | if (module_ns == NULL) | |
7066 | return MATCH_ERROR; | |
7067 | ||
2b77e908 FXC |
7068 | /* Store the current state of the interface. We will need it if we |
7069 | end up with a syntax error and need to recover. */ | |
7070 | old_interface_head = gfc_current_interface_head (); | |
7071 | ||
162b5a21 SK |
7072 | /* Check if the F2008 optional double colon appears. */ |
7073 | gfc_gobble_whitespace (); | |
7074 | old_locus = gfc_current_locus; | |
7075 | if (gfc_match ("::") == MATCH_YES) | |
7076 | { | |
7077 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: double colon in " | |
7078 | "MODULE PROCEDURE statement at %L", &old_locus) | |
7079 | == FAILURE) | |
7080 | return MATCH_ERROR; | |
7081 | } | |
7082 | else | |
7083 | gfc_current_locus = old_locus; | |
7084 | ||
6de9cd9a DN |
7085 | for (;;) |
7086 | { | |
2b77e908 | 7087 | bool last = false; |
162b5a21 | 7088 | old_locus = gfc_current_locus; |
2b77e908 | 7089 | |
6de9cd9a DN |
7090 | m = gfc_match_name (name); |
7091 | if (m == MATCH_NO) | |
7092 | goto syntax; | |
7093 | if (m != MATCH_YES) | |
7094 | return MATCH_ERROR; | |
7095 | ||
2b77e908 FXC |
7096 | /* Check for syntax error before starting to add symbols to the |
7097 | current namespace. */ | |
7098 | if (gfc_match_eos () == MATCH_YES) | |
7099 | last = true; | |
162b5a21 | 7100 | |
2b77e908 FXC |
7101 | if (!last && gfc_match_char (',') != MATCH_YES) |
7102 | goto syntax; | |
7103 | ||
7104 | /* Now we're sure the syntax is valid, we process this item | |
7105 | further. */ | |
060fca4a | 7106 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7107 | return MATCH_ERROR; |
7108 | ||
43dfd40c SK |
7109 | if (sym->attr.intrinsic) |
7110 | { | |
7111 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7112 | "PROCEDURE", &old_locus); | |
7113 | return MATCH_ERROR; | |
7114 | } | |
7115 | ||
6de9cd9a | 7116 | if (sym->attr.proc != PROC_MODULE |
231b2fcc TS |
7117 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
7118 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
7119 | return MATCH_ERROR; |
7120 | ||
7121 | if (gfc_add_interface (sym) == FAILURE) | |
7122 | return MATCH_ERROR; | |
7123 | ||
71f77fd7 | 7124 | sym->attr.mod_proc = 1; |
43dfd40c | 7125 | sym->declared_at = old_locus; |
71f77fd7 | 7126 | |
2b77e908 | 7127 | if (last) |
6de9cd9a | 7128 | break; |
6de9cd9a DN |
7129 | } |
7130 | ||
7131 | return MATCH_YES; | |
7132 | ||
7133 | syntax: | |
2b77e908 FXC |
7134 | /* Restore the previous state of the interface. */ |
7135 | interface = gfc_current_interface_head (); | |
7136 | gfc_set_current_interface_head (old_interface_head); | |
7137 | ||
7138 | /* Free the new interfaces. */ | |
7139 | while (interface != old_interface_head) | |
7140 | { | |
7141 | gfc_interface *i = interface->next; | |
cede9502 | 7142 | free (interface); |
2b77e908 FXC |
7143 | interface = i; |
7144 | } | |
7145 | ||
7146 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7147 | gfc_syntax_error (ST_MODULE_PROC); |
7148 | return MATCH_ERROR; | |
7149 | } | |
7150 | ||
7151 | ||
7d1f1e61 PT |
7152 | /* Check a derived type that is being extended. */ |
7153 | static gfc_symbol* | |
7154 | check_extended_derived_type (char *name) | |
7155 | { | |
7156 | gfc_symbol *extended; | |
7157 | ||
7158 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7159 | { | |
7160 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7161 | return NULL; | |
7162 | } | |
7163 | ||
7164 | if (!extended) | |
7165 | { | |
7166 | gfc_error ("No such symbol in TYPE definition at %C"); | |
7167 | return NULL; | |
7168 | } | |
7169 | ||
7170 | if (extended->attr.flavor != FL_DERIVED) | |
7171 | { | |
7172 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7173 | "derived type", name); | |
7174 | return NULL; | |
7175 | } | |
7176 | ||
7177 | if (extended->attr.is_bind_c) | |
7178 | { | |
7179 | gfc_error ("'%s' cannot be extended at %C because it " | |
7180 | "is BIND(C)", extended->name); | |
7181 | return NULL; | |
7182 | } | |
7183 | ||
7184 | if (extended->attr.sequence) | |
7185 | { | |
7186 | gfc_error ("'%s' cannot be extended at %C because it " | |
7187 | "is a SEQUENCE type", extended->name); | |
7188 | return NULL; | |
7189 | } | |
7190 | ||
7191 | return extended; | |
7192 | } | |
7193 | ||
7194 | ||
a8b3b0b6 CR |
7195 | /* Match the optional attribute specifiers for a type declaration. |
7196 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7197 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7198 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7199 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7200 | |
7201 | match | |
7d1f1e61 | 7202 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7203 | { |
a8b3b0b6 | 7204 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7205 | if (gfc_match (" , private") == MATCH_YES) |
7206 | { | |
d51347f9 | 7207 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7208 | { |
d51347f9 TB |
7209 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7210 | "specification part of a module"); | |
6de9cd9a DN |
7211 | return MATCH_ERROR; |
7212 | } | |
7213 | ||
a8b3b0b6 | 7214 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
6de9cd9a | 7215 | return MATCH_ERROR; |
6de9cd9a | 7216 | } |
a8b3b0b6 | 7217 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7218 | { |
d51347f9 | 7219 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7220 | { |
d51347f9 TB |
7221 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7222 | "specification part of a module"); | |
6de9cd9a DN |
7223 | return MATCH_ERROR; |
7224 | } | |
7225 | ||
a8b3b0b6 | 7226 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
6de9cd9a | 7227 | return MATCH_ERROR; |
6de9cd9a | 7228 | } |
52f49934 | 7229 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7230 | { |
7231 | /* If the type is defined to be bind(c) it then needs to make | |
7232 | sure that all fields are interoperable. This will | |
7233 | need to be a semantic check on the finished derived type. | |
7234 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
7235 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
7236 | return MATCH_ERROR; | |
7237 | ||
7238 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7239 | } | |
52f49934 DK |
7240 | else if (gfc_match (" , abstract") == MATCH_YES) |
7241 | { | |
7242 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ABSTRACT type at %C") | |
7243 | == FAILURE) | |
7244 | return MATCH_ERROR; | |
7245 | ||
7246 | if (gfc_add_abstract (attr, &gfc_current_locus) == FAILURE) | |
7247 | return MATCH_ERROR; | |
7248 | } | |
7d1f1e61 PT |
7249 | else if (name && gfc_match(" , extends ( %n )", name) == MATCH_YES) |
7250 | { | |
63a3341a | 7251 | if (gfc_add_extension (attr, &gfc_current_locus) == FAILURE) |
7d1f1e61 PT |
7252 | return MATCH_ERROR; |
7253 | } | |
a8b3b0b6 CR |
7254 | else |
7255 | return MATCH_NO; | |
7256 | ||
7257 | /* If we get here, something matched. */ | |
7258 | return MATCH_YES; | |
7259 | } | |
7260 | ||
7261 | ||
7262 | /* Match the beginning of a derived type declaration. If a type name | |
7263 | was the result of a function, then it is possible to have a symbol | |
7264 | already to be known as a derived type yet have no components. */ | |
7265 | ||
7266 | match | |
7267 | gfc_match_derived_decl (void) | |
7268 | { | |
7269 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7270 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 CR |
7271 | symbol_attribute attr; |
7272 | gfc_symbol *sym; | |
7d1f1e61 | 7273 | gfc_symbol *extended; |
a8b3b0b6 CR |
7274 | match m; |
7275 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7276 | bool seen_attr = false; |
a8b3b0b6 CR |
7277 | |
7278 | if (gfc_current_state () == COMP_DERIVED) | |
7279 | return MATCH_NO; | |
7280 | ||
7d1f1e61 PT |
7281 | name[0] = '\0'; |
7282 | parent[0] = '\0'; | |
a8b3b0b6 | 7283 | gfc_clear_attr (&attr); |
7d1f1e61 | 7284 | extended = NULL; |
a8b3b0b6 CR |
7285 | |
7286 | do | |
7287 | { | |
7d1f1e61 | 7288 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7289 | if (is_type_attr_spec == MATCH_ERROR) |
7290 | return MATCH_ERROR; | |
e7303e85 FXC |
7291 | if (is_type_attr_spec == MATCH_YES) |
7292 | seen_attr = true; | |
a8b3b0b6 | 7293 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7294 | |
63a3341a PT |
7295 | /* Deal with derived type extensions. The extension attribute has |
7296 | been added to 'attr' but now the parent type must be found and | |
7297 | checked. */ | |
7d1f1e61 PT |
7298 | if (parent[0]) |
7299 | extended = check_extended_derived_type (parent); | |
7300 | ||
7301 | if (parent[0] && !extended) | |
7302 | return MATCH_ERROR; | |
7303 | ||
e7303e85 | 7304 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7305 | { |
7306 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7307 | return MATCH_ERROR; | |
7308 | } | |
7309 | ||
7310 | m = gfc_match (" %n%t", name); | |
7311 | if (m != MATCH_YES) | |
7312 | return m; | |
7313 | ||
e9c06563 TB |
7314 | /* Make sure the name is not the name of an intrinsic type. */ |
7315 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7316 | { |
636dff67 SK |
7317 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7318 | "type", name); | |
6de9cd9a DN |
7319 | return MATCH_ERROR; |
7320 | } | |
7321 | ||
7322 | if (gfc_get_symbol (name, NULL, &sym)) | |
7323 | return MATCH_ERROR; | |
7324 | ||
7325 | if (sym->ts.type != BT_UNKNOWN) | |
7326 | { | |
7327 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
7328 | "of %s", sym->name, gfc_typename (&sym->ts)); | |
7329 | return MATCH_ERROR; | |
7330 | } | |
7331 | ||
7332 | /* The symbol may already have the derived attribute without the | |
7333 | components. The ways this can happen is via a function | |
7334 | definition, an INTRINSIC statement or a subtype in another | |
7335 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 7336 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 7337 | if (sym->attr.flavor != FL_DERIVED |
231b2fcc | 7338 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
7339 | return MATCH_ERROR; |
7340 | ||
9fa6b0af | 7341 | if (sym->components != NULL || sym->attr.zero_comp) |
6de9cd9a | 7342 | { |
636dff67 SK |
7343 | gfc_error ("Derived type definition of '%s' at %C has already been " |
7344 | "defined", sym->name); | |
6de9cd9a DN |
7345 | return MATCH_ERROR; |
7346 | } | |
7347 | ||
7348 | if (attr.access != ACCESS_UNKNOWN | |
231b2fcc | 7349 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
7350 | return MATCH_ERROR; |
7351 | ||
a8b3b0b6 CR |
7352 | /* See if the derived type was labeled as bind(c). */ |
7353 | if (attr.is_bind_c != 0) | |
7354 | sym->attr.is_bind_c = attr.is_bind_c; | |
7355 | ||
34523524 DK |
7356 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7357 | if (!sym->f2k_derived) | |
7358 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
7359 | |
7360 | if (extended && !sym->components) | |
7361 | { | |
7362 | gfc_component *p; | |
7363 | gfc_symtree *st; | |
7364 | ||
7365 | /* Add the extended derived type as the first component. */ | |
7366 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
7367 | extended->refs++; |
7368 | gfc_set_sym_referenced (extended); | |
7369 | ||
7370 | p->ts.type = BT_DERIVED; | |
bc21d315 | 7371 | p->ts.u.derived = extended; |
7d1f1e61 | 7372 | p->initializer = gfc_default_initializer (&p->ts); |
7c1dab0d JW |
7373 | |
7374 | /* Set extension level. */ | |
7375 | if (extended->attr.extension == 255) | |
7376 | { | |
7377 | /* Since the extension field is 8 bit wide, we can only have | |
7378 | up to 255 extension levels. */ | |
7379 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7380 | extended->name, &extended->declared_at); | |
7381 | return MATCH_ERROR; | |
7382 | } | |
7383 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
7384 | |
7385 | /* Provide the links between the extended type and its extension. */ | |
7386 | if (!extended->f2k_derived) | |
7387 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7388 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7389 | st->n.sym = sym; | |
7390 | } | |
7391 | ||
7c1dab0d JW |
7392 | if (!sym->hash_value) |
7393 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 7394 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 7395 | |
52f49934 DK |
7396 | /* Take over the ABSTRACT attribute. */ |
7397 | sym->attr.abstract = attr.abstract; | |
7398 | ||
6de9cd9a DN |
7399 | gfc_new_block = sym; |
7400 | ||
7401 | return MATCH_YES; | |
7402 | } | |
83d890b9 AL |
7403 | |
7404 | ||
7405 | /* Cray Pointees can be declared as: | |
b3aefde2 | 7406 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 7407 | |
32e8bb8e | 7408 | match |
83d890b9 AL |
7409 | gfc_mod_pointee_as (gfc_array_spec *as) |
7410 | { | |
7411 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7412 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 7413 | as->cp_was_assumed = true; |
83d890b9 AL |
7414 | else if (as->type == AS_ASSUMED_SHAPE) |
7415 | { | |
7416 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7417 | return MATCH_ERROR; | |
7418 | } | |
7419 | return MATCH_YES; | |
7420 | } | |
25d8f0a2 TS |
7421 | |
7422 | ||
7423 | /* Match the enum definition statement, here we are trying to match | |
7424 | the first line of enum definition statement. | |
7425 | Returns MATCH_YES if match is found. */ | |
7426 | ||
7427 | match | |
7428 | gfc_match_enum (void) | |
7429 | { | |
7430 | match m; | |
7431 | ||
7432 | m = gfc_match_eos (); | |
7433 | if (m != MATCH_YES) | |
7434 | return m; | |
7435 | ||
6133c68a | 7436 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ENUM and ENUMERATOR at %C") |
25d8f0a2 TS |
7437 | == FAILURE) |
7438 | return MATCH_ERROR; | |
7439 | ||
7440 | return MATCH_YES; | |
7441 | } | |
7442 | ||
7443 | ||
31224396 SK |
7444 | /* Returns an initializer whose value is one higher than the value of the |
7445 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7446 | initializers value will be set to zero. The initializer's kind | |
7447 | will be set to gfc_c_int_kind. | |
7448 | ||
7449 | If -fshort-enums is given, the appropriate kind will be selected | |
7450 | later after all enumerators have been parsed. A warning is issued | |
7451 | here if an initializer exceeds gfc_c_int_kind. */ | |
7452 | ||
7453 | static gfc_expr * | |
7454 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7455 | { | |
7456 | gfc_expr *result; | |
b7e75771 | 7457 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
7458 | |
7459 | mpz_init (result->value.integer); | |
7460 | ||
7461 | if (last_initializer != NULL) | |
7462 | { | |
7463 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7464 | result->where = last_initializer->where; | |
7465 | ||
7466 | if (gfc_check_integer_range (result->value.integer, | |
7467 | gfc_c_int_kind) != ARITH_OK) | |
7468 | { | |
7469 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7470 | return NULL; | |
7471 | } | |
7472 | } | |
7473 | else | |
7474 | { | |
7475 | /* Control comes here, if it's the very first enumerator and no | |
7476 | initializer has been given. It will be initialized to zero. */ | |
7477 | mpz_set_si (result->value.integer, 0); | |
7478 | } | |
7479 | ||
7480 | return result; | |
7481 | } | |
7482 | ||
7483 | ||
6133c68a TS |
7484 | /* Match a variable name with an optional initializer. When this |
7485 | subroutine is called, a variable is expected to be parsed next. | |
7486 | Depending on what is happening at the moment, updates either the | |
7487 | symbol table or the current interface. */ | |
7488 | ||
7489 | static match | |
7490 | enumerator_decl (void) | |
7491 | { | |
7492 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7493 | gfc_expr *initializer; | |
7494 | gfc_array_spec *as = NULL; | |
7495 | gfc_symbol *sym; | |
7496 | locus var_locus; | |
7497 | match m; | |
17b1d2a0 | 7498 | gfc_try t; |
6133c68a TS |
7499 | locus old_locus; |
7500 | ||
7501 | initializer = NULL; | |
7502 | old_locus = gfc_current_locus; | |
7503 | ||
7504 | /* When we get here, we've just matched a list of attributes and | |
7505 | maybe a type and a double colon. The next thing we expect to see | |
7506 | is the name of the symbol. */ | |
7507 | m = gfc_match_name (name); | |
7508 | if (m != MATCH_YES) | |
7509 | goto cleanup; | |
7510 | ||
7511 | var_locus = gfc_current_locus; | |
7512 | ||
7513 | /* OK, we've successfully matched the declaration. Now put the | |
7514 | symbol in the current namespace. If we fail to create the symbol, | |
7515 | bail out. */ | |
e69afb29 | 7516 | if (build_sym (name, NULL, false, &as, &var_locus) == FAILURE) |
6133c68a TS |
7517 | { |
7518 | m = MATCH_ERROR; | |
7519 | goto cleanup; | |
7520 | } | |
7521 | ||
7522 | /* The double colon must be present in order to have initializers. | |
7523 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7524 | if (colon_seen) | |
7525 | { | |
7526 | if (gfc_match_char ('=') == MATCH_YES) | |
7527 | { | |
7528 | m = gfc_match_init_expr (&initializer); | |
7529 | if (m == MATCH_NO) | |
7530 | { | |
7531 | gfc_error ("Expected an initialization expression at %C"); | |
7532 | m = MATCH_ERROR; | |
7533 | } | |
7534 | ||
7535 | if (m != MATCH_YES) | |
7536 | goto cleanup; | |
7537 | } | |
7538 | } | |
7539 | ||
7540 | /* If we do not have an initializer, the initialization value of the | |
7541 | previous enumerator (stored in last_initializer) is incremented | |
7542 | by 1 and is used to initialize the current enumerator. */ | |
7543 | if (initializer == NULL) | |
31224396 | 7544 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 7545 | |
6133c68a TS |
7546 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7547 | { | |
01e64c3d JJ |
7548 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7549 | &var_locus); | |
d51347f9 | 7550 | m = MATCH_ERROR; |
6133c68a TS |
7551 | goto cleanup; |
7552 | } | |
7553 | ||
7554 | /* Store this current initializer, for the next enumerator variable | |
7555 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7556 | use last_initializer below. */ | |
7557 | last_initializer = initializer; | |
7558 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7559 | ||
7560 | /* Maintain enumerator history. */ | |
7561 | gfc_find_symbol (name, NULL, 0, &sym); | |
7562 | create_enum_history (sym, last_initializer); | |
7563 | ||
7564 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
7565 | ||
7566 | cleanup: | |
7567 | /* Free stuff up and return. */ | |
7568 | gfc_free_expr (initializer); | |
7569 | ||
7570 | return m; | |
7571 | } | |
7572 | ||
7573 | ||
66e4ab31 | 7574 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
7575 | |
7576 | match | |
7577 | gfc_match_enumerator_def (void) | |
7578 | { | |
7579 | match m; | |
17b1d2a0 | 7580 | gfc_try t; |
d51347f9 | 7581 | |
25d8f0a2 | 7582 | gfc_clear_ts (¤t_ts); |
d51347f9 | 7583 | |
25d8f0a2 TS |
7584 | m = gfc_match (" enumerator"); |
7585 | if (m != MATCH_YES) | |
7586 | return m; | |
6133c68a TS |
7587 | |
7588 | m = gfc_match (" :: "); | |
7589 | if (m == MATCH_ERROR) | |
7590 | return m; | |
7591 | ||
7592 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 7593 | |
25d8f0a2 TS |
7594 | if (gfc_current_state () != COMP_ENUM) |
7595 | { | |
7596 | gfc_error ("ENUM definition statement expected before %C"); | |
7597 | gfc_free_enum_history (); | |
7598 | return MATCH_ERROR; | |
7599 | } | |
7600 | ||
7601 | (¤t_ts)->type = BT_INTEGER; | |
7602 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 7603 | |
6133c68a TS |
7604 | gfc_clear_attr (¤t_attr); |
7605 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
7606 | if (t == FAILURE) | |
25d8f0a2 | 7607 | { |
6133c68a | 7608 | m = MATCH_ERROR; |
25d8f0a2 TS |
7609 | goto cleanup; |
7610 | } | |
7611 | ||
25d8f0a2 TS |
7612 | for (;;) |
7613 | { | |
6133c68a | 7614 | m = enumerator_decl (); |
25d8f0a2 | 7615 | if (m == MATCH_ERROR) |
01e64c3d JJ |
7616 | { |
7617 | gfc_free_enum_history (); | |
7618 | goto cleanup; | |
7619 | } | |
25d8f0a2 TS |
7620 | if (m == MATCH_NO) |
7621 | break; | |
7622 | ||
7623 | if (gfc_match_eos () == MATCH_YES) | |
7624 | goto cleanup; | |
7625 | if (gfc_match_char (',') != MATCH_YES) | |
7626 | break; | |
7627 | } | |
7628 | ||
7629 | if (gfc_current_state () == COMP_ENUM) | |
7630 | { | |
7631 | gfc_free_enum_history (); | |
7632 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7633 | m = MATCH_ERROR; | |
7634 | } | |
7635 | ||
7636 | cleanup: | |
7637 | gfc_free_array_spec (current_as); | |
7638 | current_as = NULL; | |
7639 | return m; | |
7640 | ||
7641 | } | |
7642 | ||
f6fad28e | 7643 | |
30b608eb DK |
7644 | /* Match binding attributes. */ |
7645 | ||
7646 | static match | |
713485cc | 7647 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
7648 | { |
7649 | bool found_passing = false; | |
713485cc | 7650 | bool seen_ptr = false; |
90661f26 | 7651 | match m = MATCH_YES; |
30b608eb DK |
7652 | |
7653 | /* Intialize to defaults. Do so even before the MATCH_NO check so that in | |
7654 | this case the defaults are in there. */ | |
7655 | ba->access = ACCESS_UNKNOWN; | |
7656 | ba->pass_arg = NULL; | |
7657 | ba->pass_arg_num = 0; | |
7658 | ba->nopass = 0; | |
7659 | ba->non_overridable = 0; | |
b0e5fa94 | 7660 | ba->deferred = 0; |
90661f26 | 7661 | ba->ppc = ppc; |
30b608eb DK |
7662 | |
7663 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
7664 | m = gfc_match_char (','); |
7665 | if (m == MATCH_NO) | |
7666 | goto done; | |
30b608eb DK |
7667 | |
7668 | do | |
7669 | { | |
e157f736 DK |
7670 | /* Access specifier. */ |
7671 | ||
7672 | m = gfc_match (" public"); | |
30b608eb DK |
7673 | if (m == MATCH_ERROR) |
7674 | goto error; | |
7675 | if (m == MATCH_YES) | |
7676 | { | |
e157f736 | 7677 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7678 | { |
e157f736 | 7679 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7680 | goto error; |
7681 | } | |
7682 | ||
e157f736 | 7683 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
7684 | continue; |
7685 | } | |
7686 | ||
e157f736 | 7687 | m = gfc_match (" private"); |
30b608eb DK |
7688 | if (m == MATCH_ERROR) |
7689 | goto error; | |
7690 | if (m == MATCH_YES) | |
7691 | { | |
e157f736 | 7692 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7693 | { |
e157f736 | 7694 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7695 | goto error; |
7696 | } | |
7697 | ||
e157f736 | 7698 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
7699 | continue; |
7700 | } | |
7701 | ||
e157f736 DK |
7702 | /* If inside GENERIC, the following is not allowed. */ |
7703 | if (!generic) | |
30b608eb | 7704 | { |
30b608eb | 7705 | |
e157f736 DK |
7706 | /* NOPASS flag. */ |
7707 | m = gfc_match (" nopass"); | |
7708 | if (m == MATCH_ERROR) | |
7709 | goto error; | |
7710 | if (m == MATCH_YES) | |
30b608eb | 7711 | { |
e157f736 DK |
7712 | if (found_passing) |
7713 | { | |
7714 | gfc_error ("Binding attributes already specify passing," | |
7715 | " illegal NOPASS at %C"); | |
7716 | goto error; | |
7717 | } | |
7718 | ||
7719 | found_passing = true; | |
7720 | ba->nopass = 1; | |
7721 | continue; | |
30b608eb DK |
7722 | } |
7723 | ||
e157f736 DK |
7724 | /* PASS possibly including argument. */ |
7725 | m = gfc_match (" pass"); | |
7726 | if (m == MATCH_ERROR) | |
7727 | goto error; | |
7728 | if (m == MATCH_YES) | |
30b608eb | 7729 | { |
e157f736 DK |
7730 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
7731 | ||
7732 | if (found_passing) | |
7733 | { | |
7734 | gfc_error ("Binding attributes already specify passing," | |
7735 | " illegal PASS at %C"); | |
7736 | goto error; | |
7737 | } | |
7738 | ||
7739 | m = gfc_match (" ( %n )", arg); | |
7740 | if (m == MATCH_ERROR) | |
7741 | goto error; | |
7742 | if (m == MATCH_YES) | |
90661f26 | 7743 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
7744 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
7745 | ||
7746 | found_passing = true; | |
7747 | ba->nopass = 0; | |
7748 | continue; | |
30b608eb DK |
7749 | } |
7750 | ||
713485cc JW |
7751 | if (ppc) |
7752 | { | |
7753 | /* POINTER flag. */ | |
7754 | m = gfc_match (" pointer"); | |
7755 | if (m == MATCH_ERROR) | |
7756 | goto error; | |
7757 | if (m == MATCH_YES) | |
7758 | { | |
7759 | if (seen_ptr) | |
7760 | { | |
7761 | gfc_error ("Duplicate POINTER attribute at %C"); | |
7762 | goto error; | |
7763 | } | |
7764 | ||
7765 | seen_ptr = true; | |
713485cc JW |
7766 | continue; |
7767 | } | |
7768 | } | |
7769 | else | |
7770 | { | |
7771 | /* NON_OVERRIDABLE flag. */ | |
7772 | m = gfc_match (" non_overridable"); | |
7773 | if (m == MATCH_ERROR) | |
7774 | goto error; | |
7775 | if (m == MATCH_YES) | |
7776 | { | |
7777 | if (ba->non_overridable) | |
7778 | { | |
7779 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
7780 | goto error; | |
7781 | } | |
7782 | ||
7783 | ba->non_overridable = 1; | |
7784 | continue; | |
7785 | } | |
7786 | ||
7787 | /* DEFERRED flag. */ | |
7788 | m = gfc_match (" deferred"); | |
7789 | if (m == MATCH_ERROR) | |
7790 | goto error; | |
7791 | if (m == MATCH_YES) | |
7792 | { | |
7793 | if (ba->deferred) | |
7794 | { | |
7795 | gfc_error ("Duplicate DEFERRED at %C"); | |
7796 | goto error; | |
7797 | } | |
7798 | ||
7799 | ba->deferred = 1; | |
7800 | continue; | |
7801 | } | |
7802 | } | |
7803 | ||
30b608eb DK |
7804 | } |
7805 | ||
7806 | /* Nothing matching found. */ | |
e157f736 DK |
7807 | if (generic) |
7808 | gfc_error ("Expected access-specifier at %C"); | |
7809 | else | |
7810 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
7811 | goto error; |
7812 | } | |
7813 | while (gfc_match_char (',') == MATCH_YES); | |
7814 | ||
b0e5fa94 DK |
7815 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
7816 | if (ba->non_overridable && ba->deferred) | |
7817 | { | |
7818 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
7819 | goto error; | |
7820 | } | |
7821 | ||
90661f26 JW |
7822 | m = MATCH_YES; |
7823 | ||
7824 | done: | |
e157f736 DK |
7825 | if (ba->access == ACCESS_UNKNOWN) |
7826 | ba->access = gfc_typebound_default_access; | |
7827 | ||
713485cc JW |
7828 | if (ppc && !seen_ptr) |
7829 | { | |
7830 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
7831 | " at %C"); | |
7832 | goto error; | |
7833 | } | |
7834 | ||
90661f26 | 7835 | return m; |
30b608eb DK |
7836 | |
7837 | error: | |
30b608eb DK |
7838 | return MATCH_ERROR; |
7839 | } | |
7840 | ||
7841 | ||
7842 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
7843 | ||
7844 | static match | |
7845 | match_procedure_in_type (void) | |
7846 | { | |
7847 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7848 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 7849 | char* target = NULL, *ifc = NULL; |
3e15518b | 7850 | gfc_typebound_proc tb; |
30b608eb DK |
7851 | bool seen_colons; |
7852 | bool seen_attrs; | |
7853 | match m; | |
7854 | gfc_symtree* stree; | |
7855 | gfc_namespace* ns; | |
7856 | gfc_symbol* block; | |
1be17993 | 7857 | int num; |
30b608eb DK |
7858 | |
7859 | /* Check current state. */ | |
7860 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
7861 | block = gfc_state_stack->previous->sym; | |
7862 | gcc_assert (block); | |
7863 | ||
b0e5fa94 | 7864 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
7865 | if (gfc_match (" (") == MATCH_YES) |
7866 | { | |
b0e5fa94 DK |
7867 | m = gfc_match_name (target_buf); |
7868 | if (m == MATCH_ERROR) | |
7869 | return m; | |
7870 | if (m != MATCH_YES) | |
7871 | { | |
7872 | gfc_error ("Interface-name expected after '(' at %C"); | |
7873 | return MATCH_ERROR; | |
7874 | } | |
7875 | ||
7876 | if (gfc_match (" )") != MATCH_YES) | |
7877 | { | |
7878 | gfc_error ("')' expected at %C"); | |
7879 | return MATCH_ERROR; | |
7880 | } | |
7881 | ||
1be17993 | 7882 | ifc = target_buf; |
30b608eb DK |
7883 | } |
7884 | ||
7885 | /* Construct the data structure. */ | |
ff5b6492 | 7886 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 7887 | tb.where = gfc_current_locus; |
30b608eb DK |
7888 | |
7889 | /* Match binding attributes. */ | |
3e15518b | 7890 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
7891 | if (m == MATCH_ERROR) |
7892 | return m; | |
7893 | seen_attrs = (m == MATCH_YES); | |
7894 | ||
1be17993 | 7895 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 7896 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
7897 | { |
7898 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
7899 | return MATCH_ERROR; | |
7900 | } | |
3e15518b | 7901 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
7902 | { |
7903 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
7904 | return MATCH_ERROR; | |
7905 | } | |
7906 | ||
30b608eb DK |
7907 | /* Match the colons. */ |
7908 | m = gfc_match (" ::"); | |
7909 | if (m == MATCH_ERROR) | |
7910 | return m; | |
7911 | seen_colons = (m == MATCH_YES); | |
7912 | if (seen_attrs && !seen_colons) | |
7913 | { | |
7914 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
7915 | return MATCH_ERROR; | |
7916 | } | |
7917 | ||
1be17993 JW |
7918 | /* Match the binding names. */ |
7919 | for(num=1;;num++) | |
30b608eb | 7920 | { |
1be17993 JW |
7921 | m = gfc_match_name (name); |
7922 | if (m == MATCH_ERROR) | |
7923 | return m; | |
7924 | if (m == MATCH_NO) | |
b0e5fa94 | 7925 | { |
1be17993 | 7926 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
7927 | return MATCH_ERROR; |
7928 | } | |
7929 | ||
1be17993 JW |
7930 | if (num>1 && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: PROCEDURE list" |
7931 | " at %C") == FAILURE) | |
7932 | return MATCH_ERROR; | |
30b608eb | 7933 | |
1be17993 JW |
7934 | /* Try to match the '=> target', if it's there. */ |
7935 | target = ifc; | |
7936 | m = gfc_match (" =>"); | |
30b608eb DK |
7937 | if (m == MATCH_ERROR) |
7938 | return m; | |
1be17993 | 7939 | if (m == MATCH_YES) |
30b608eb | 7940 | { |
3e15518b | 7941 | if (tb.deferred) |
1be17993 JW |
7942 | { |
7943 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
7944 | return MATCH_ERROR; | |
7945 | } | |
7946 | ||
7947 | if (!seen_colons) | |
7948 | { | |
7949 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
7950 | " at %C"); | |
7951 | return MATCH_ERROR; | |
7952 | } | |
7953 | ||
7954 | m = gfc_match_name (target_buf); | |
7955 | if (m == MATCH_ERROR) | |
7956 | return m; | |
7957 | if (m == MATCH_NO) | |
7958 | { | |
7959 | gfc_error ("Expected binding target after '=>' at %C"); | |
7960 | return MATCH_ERROR; | |
7961 | } | |
7962 | target = target_buf; | |
30b608eb | 7963 | } |
30b608eb | 7964 | |
1be17993 JW |
7965 | /* If no target was found, it has the same name as the binding. */ |
7966 | if (!target) | |
7967 | target = name; | |
30b608eb | 7968 | |
1be17993 JW |
7969 | /* Get the namespace to insert the symbols into. */ |
7970 | ns = block->f2k_derived; | |
7971 | gcc_assert (ns); | |
30b608eb | 7972 | |
1be17993 | 7973 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 7974 | if (tb.deferred && !block->attr.abstract) |
1be17993 JW |
7975 | { |
7976 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
7977 | "is not ABSTRACT", block->name); | |
7978 | return MATCH_ERROR; | |
7979 | } | |
30b608eb | 7980 | |
1be17993 JW |
7981 | /* See if we already have a binding with this name in the symtree which |
7982 | would be an error. If a GENERIC already targetted this binding, it may | |
7983 | be already there but then typebound is still NULL. */ | |
7984 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 7985 | if (stree && stree->n.tb) |
1be17993 JW |
7986 | { |
7987 | gfc_error ("There is already a procedure with binding name '%s' for " | |
7988 | "the derived type '%s' at %C", name, block->name); | |
7989 | return MATCH_ERROR; | |
7990 | } | |
b0e5fa94 | 7991 | |
1be17993 | 7992 | /* Insert it and set attributes. */ |
30b608eb | 7993 | |
9f23af48 MM |
7994 | if (!stree) |
7995 | { | |
7996 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
7997 | gcc_assert (stree); | |
7998 | } | |
3e15518b | 7999 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8000 | |
3e15518b JW |
8001 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8002 | false)) | |
1be17993 | 8003 | return MATCH_ERROR; |
3e15518b | 8004 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1be17993 JW |
8005 | |
8006 | if (gfc_match_eos () == MATCH_YES) | |
8007 | return MATCH_YES; | |
8008 | if (gfc_match_char (',') != MATCH_YES) | |
8009 | goto syntax; | |
e34ccb4c | 8010 | } |
30b608eb | 8011 | |
1be17993 JW |
8012 | syntax: |
8013 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8014 | return MATCH_ERROR; | |
30b608eb DK |
8015 | } |
8016 | ||
8017 | ||
e157f736 DK |
8018 | /* Match a GENERIC procedure binding inside a derived type. */ |
8019 | ||
8020 | match | |
8021 | gfc_match_generic (void) | |
8022 | { | |
8023 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8024 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8025 | gfc_symbol* block; |
8026 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8027 | gfc_typebound_proc* tb; | |
e157f736 | 8028 | gfc_namespace* ns; |
94747289 DK |
8029 | interface_type op_type; |
8030 | gfc_intrinsic_op op; | |
e157f736 DK |
8031 | match m; |
8032 | ||
8033 | /* Check current state. */ | |
8034 | if (gfc_current_state () == COMP_DERIVED) | |
8035 | { | |
8036 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8037 | return MATCH_ERROR; | |
8038 | } | |
8039 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8040 | return MATCH_NO; | |
8041 | block = gfc_state_stack->previous->sym; | |
8042 | ns = block->f2k_derived; | |
8043 | gcc_assert (block && ns); | |
8044 | ||
ff5b6492 MM |
8045 | memset (&tbattr, 0, sizeof (tbattr)); |
8046 | tbattr.where = gfc_current_locus; | |
8047 | ||
e157f736 | 8048 | /* See if we get an access-specifier. */ |
713485cc | 8049 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8050 | if (m == MATCH_ERROR) |
8051 | goto error; | |
8052 | ||
8053 | /* Now the colons, those are required. */ | |
8054 | if (gfc_match (" ::") != MATCH_YES) | |
8055 | { | |
8056 | gfc_error ("Expected '::' at %C"); | |
8057 | goto error; | |
8058 | } | |
8059 | ||
94747289 DK |
8060 | /* Match the binding name; depending on type (operator / generic) format |
8061 | it for future error messages into bind_name. */ | |
8062 | ||
8063 | m = gfc_match_generic_spec (&op_type, name, &op); | |
e157f736 DK |
8064 | if (m == MATCH_ERROR) |
8065 | return MATCH_ERROR; | |
8066 | if (m == MATCH_NO) | |
8067 | { | |
94747289 | 8068 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8069 | goto error; |
8070 | } | |
8071 | ||
94747289 | 8072 | switch (op_type) |
e157f736 | 8073 | { |
94747289 DK |
8074 | case INTERFACE_GENERIC: |
8075 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8076 | break; | |
8077 | ||
8078 | case INTERFACE_USER_OP: | |
8079 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8080 | break; | |
8081 | ||
8082 | case INTERFACE_INTRINSIC_OP: | |
8083 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8084 | gfc_op2string (op)); | |
8085 | break; | |
8086 | ||
8087 | default: | |
8088 | gcc_unreachable (); | |
8089 | } | |
e34ccb4c | 8090 | |
94747289 DK |
8091 | /* Match the required =>. */ |
8092 | if (gfc_match (" =>") != MATCH_YES) | |
8093 | { | |
8094 | gfc_error ("Expected '=>' at %C"); | |
8095 | goto error; | |
8096 | } | |
8097 | ||
8098 | /* Try to find existing GENERIC binding with this name / for this operator; | |
8099 | if there is something, check that it is another GENERIC and then extend | |
8100 | it rather than building a new node. Otherwise, create it and put it | |
8101 | at the right position. */ | |
8102 | ||
8103 | switch (op_type) | |
8104 | { | |
8105 | case INTERFACE_USER_OP: | |
8106 | case INTERFACE_GENERIC: | |
8107 | { | |
8108 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8109 | gfc_symtree* st; | |
8110 | ||
8111 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8112 | if (st) | |
8113 | { | |
8114 | tb = st->n.tb; | |
8115 | gcc_assert (tb); | |
8116 | } | |
8117 | else | |
8118 | tb = NULL; | |
8119 | ||
8120 | break; | |
8121 | } | |
8122 | ||
8123 | case INTERFACE_INTRINSIC_OP: | |
8124 | tb = ns->tb_op[op]; | |
8125 | break; | |
8126 | ||
8127 | default: | |
8128 | gcc_unreachable (); | |
8129 | } | |
8130 | ||
8131 | if (tb) | |
8132 | { | |
e34ccb4c | 8133 | if (!tb->is_generic) |
e157f736 | 8134 | { |
94747289 | 8135 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 DK |
8136 | gfc_error ("There's already a non-generic procedure with binding name" |
8137 | " '%s' for the derived type '%s' at %C", | |
94747289 | 8138 | bind_name, block->name); |
e157f736 DK |
8139 | goto error; |
8140 | } | |
8141 | ||
e157f736 DK |
8142 | if (tb->access != tbattr.access) |
8143 | { | |
8144 | gfc_error ("Binding at %C must have the same access as already" | |
94747289 | 8145 | " defined binding '%s'", bind_name); |
e157f736 DK |
8146 | goto error; |
8147 | } | |
8148 | } | |
8149 | else | |
8150 | { | |
3e15518b | 8151 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8152 | tb->where = gfc_current_locus; |
8153 | tb->access = tbattr.access; | |
8154 | tb->is_generic = 1; | |
8155 | tb->u.generic = NULL; | |
94747289 DK |
8156 | |
8157 | switch (op_type) | |
8158 | { | |
8159 | case INTERFACE_GENERIC: | |
8160 | case INTERFACE_USER_OP: | |
8161 | { | |
8162 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8163 | gfc_symtree* st; | |
8164 | ||
8165 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8166 | name); | |
8167 | gcc_assert (st); | |
8168 | st->n.tb = tb; | |
8169 | ||
8170 | break; | |
8171 | } | |
8172 | ||
8173 | case INTERFACE_INTRINSIC_OP: | |
8174 | ns->tb_op[op] = tb; | |
8175 | break; | |
8176 | ||
8177 | default: | |
8178 | gcc_unreachable (); | |
8179 | } | |
e157f736 DK |
8180 | } |
8181 | ||
8182 | /* Now, match all following names as specific targets. */ | |
8183 | do | |
8184 | { | |
8185 | gfc_symtree* target_st; | |
8186 | gfc_tbp_generic* target; | |
8187 | ||
8188 | m = gfc_match_name (name); | |
8189 | if (m == MATCH_ERROR) | |
8190 | goto error; | |
8191 | if (m == MATCH_NO) | |
8192 | { | |
8193 | gfc_error ("Expected specific binding name at %C"); | |
8194 | goto error; | |
8195 | } | |
8196 | ||
e34ccb4c | 8197 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8198 | |
8199 | /* See if this is a duplicate specification. */ | |
8200 | for (target = tb->u.generic; target; target = target->next) | |
8201 | if (target_st == target->specific_st) | |
8202 | { | |
8203 | gfc_error ("'%s' already defined as specific binding for the" | |
94747289 | 8204 | " generic '%s' at %C", name, bind_name); |
e157f736 DK |
8205 | goto error; |
8206 | } | |
8207 | ||
e157f736 DK |
8208 | target = gfc_get_tbp_generic (); |
8209 | target->specific_st = target_st; | |
8210 | target->specific = NULL; | |
8211 | target->next = tb->u.generic; | |
8212 | tb->u.generic = target; | |
8213 | } | |
8214 | while (gfc_match (" ,") == MATCH_YES); | |
8215 | ||
8216 | /* Here should be the end. */ | |
8217 | if (gfc_match_eos () != MATCH_YES) | |
8218 | { | |
8219 | gfc_error ("Junk after GENERIC binding at %C"); | |
8220 | goto error; | |
8221 | } | |
8222 | ||
8223 | return MATCH_YES; | |
8224 | ||
8225 | error: | |
8226 | return MATCH_ERROR; | |
8227 | } | |
8228 | ||
8229 | ||
34523524 DK |
8230 | /* Match a FINAL declaration inside a derived type. */ |
8231 | ||
8232 | match | |
8233 | gfc_match_final_decl (void) | |
8234 | { | |
8235 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8236 | gfc_symbol* sym; | |
8237 | match m; | |
8238 | gfc_namespace* module_ns; | |
8239 | bool first, last; | |
30b608eb | 8240 | gfc_symbol* block; |
34523524 | 8241 | |
33344e0f JW |
8242 | if (gfc_current_form == FORM_FREE) |
8243 | { | |
8244 | char c = gfc_peek_ascii_char (); | |
8245 | if (!gfc_is_whitespace (c) && c != ':') | |
8246 | return MATCH_NO; | |
8247 | } | |
8248 | ||
30b608eb | 8249 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8250 | { |
33344e0f JW |
8251 | if (gfc_current_form == FORM_FIXED) |
8252 | return MATCH_NO; | |
8253 | ||
34523524 | 8254 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8255 | "CONTAINS section"); |
34523524 DK |
8256 | return MATCH_ERROR; |
8257 | } | |
8258 | ||
30b608eb DK |
8259 | block = gfc_state_stack->previous->sym; |
8260 | gcc_assert (block); | |
34523524 | 8261 | |
30b608eb DK |
8262 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8263 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8264 | { |
8265 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8266 | " specification part of a MODULE"); | |
8267 | return MATCH_ERROR; | |
8268 | } | |
8269 | ||
8270 | module_ns = gfc_current_ns; | |
8271 | gcc_assert (module_ns); | |
8272 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8273 | ||
8274 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8275 | if (gfc_match (" ::") == MATCH_ERROR) | |
8276 | return MATCH_ERROR; | |
8277 | ||
8278 | /* Match the sequence of procedure names. */ | |
8279 | first = true; | |
8280 | last = false; | |
8281 | do | |
8282 | { | |
8283 | gfc_finalizer* f; | |
8284 | ||
8285 | if (first && gfc_match_eos () == MATCH_YES) | |
8286 | { | |
8287 | gfc_error ("Empty FINAL at %C"); | |
8288 | return MATCH_ERROR; | |
8289 | } | |
8290 | ||
8291 | m = gfc_match_name (name); | |
8292 | if (m == MATCH_NO) | |
8293 | { | |
8294 | gfc_error ("Expected module procedure name at %C"); | |
8295 | return MATCH_ERROR; | |
8296 | } | |
8297 | else if (m != MATCH_YES) | |
8298 | return MATCH_ERROR; | |
8299 | ||
8300 | if (gfc_match_eos () == MATCH_YES) | |
8301 | last = true; | |
8302 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8303 | { | |
8304 | gfc_error ("Expected ',' at %C"); | |
8305 | return MATCH_ERROR; | |
8306 | } | |
8307 | ||
8308 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8309 | { | |
8310 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8311 | return MATCH_ERROR; | |
8312 | } | |
8313 | ||
8314 | /* Mark the symbol as module procedure. */ | |
8315 | if (sym->attr.proc != PROC_MODULE | |
8316 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
8317 | sym->name, NULL) == FAILURE) | |
8318 | return MATCH_ERROR; | |
8319 | ||
8320 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 8321 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 8322 | if (f->proc_sym == sym) |
34523524 DK |
8323 | { |
8324 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8325 | name); | |
8326 | return MATCH_ERROR; | |
8327 | } | |
8328 | ||
8329 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 8330 | gcc_assert (block->f2k_derived); |
34523524 | 8331 | ++sym->refs; |
ece3f663 | 8332 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
8333 | f->proc_sym = sym; |
8334 | f->proc_tree = NULL; | |
34523524 | 8335 | f->where = gfc_current_locus; |
30b608eb DK |
8336 | f->next = block->f2k_derived->finalizers; |
8337 | block->f2k_derived->finalizers = f; | |
34523524 DK |
8338 | |
8339 | first = false; | |
8340 | } | |
8341 | while (!last); | |
8342 | ||
8343 | return MATCH_YES; | |
8344 | } | |
08a6b8e0 TB |
8345 | |
8346 | ||
8347 | const ext_attr_t ext_attr_list[] = { | |
8348 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, | |
8349 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8350 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8351 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8352 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8353 | { NULL, EXT_ATTR_LAST, NULL } | |
8354 | }; | |
8355 | ||
8356 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8357 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8358 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8359 | ||
8360 | TODO: We should support all GCC attributes using the same syntax for | |
8361 | the attribute list, i.e. the list in C | |
8362 | __attributes(( attribute-list )) | |
8363 | matches then | |
8364 | !GCC$ ATTRIBUTES attribute-list :: | |
8365 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8366 | saved into a TREE. | |
8367 | ||
8368 | As there is absolutely no risk of confusion, we should never return | |
8369 | MATCH_NO. */ | |
8370 | match | |
8371 | gfc_match_gcc_attributes (void) | |
8372 | { | |
8373 | symbol_attribute attr; | |
8374 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8375 | unsigned id; | |
8376 | gfc_symbol *sym; | |
8377 | match m; | |
8378 | ||
8379 | gfc_clear_attr (&attr); | |
8380 | for(;;) | |
8381 | { | |
8382 | char ch; | |
8383 | ||
8384 | if (gfc_match_name (name) != MATCH_YES) | |
8385 | return MATCH_ERROR; | |
8386 | ||
8387 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8388 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8389 | break; | |
8390 | ||
8391 | if (id == EXT_ATTR_LAST) | |
8392 | { | |
8393 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8394 | return MATCH_ERROR; | |
8395 | } | |
8396 | ||
2b374f55 | 8397 | if (gfc_add_ext_attribute (&attr, (ext_attr_id_t) id, &gfc_current_locus) |
08a6b8e0 TB |
8398 | == FAILURE) |
8399 | return MATCH_ERROR; | |
8400 | ||
8401 | gfc_gobble_whitespace (); | |
8402 | ch = gfc_next_ascii_char (); | |
8403 | if (ch == ':') | |
8404 | { | |
8405 | /* This is the successful exit condition for the loop. */ | |
8406 | if (gfc_next_ascii_char () == ':') | |
8407 | break; | |
8408 | } | |
8409 | ||
8410 | if (ch == ',') | |
8411 | continue; | |
8412 | ||
8413 | goto syntax; | |
8414 | } | |
8415 | ||
8416 | if (gfc_match_eos () == MATCH_YES) | |
8417 | goto syntax; | |
8418 | ||
8419 | for(;;) | |
8420 | { | |
8421 | m = gfc_match_name (name); | |
8422 | if (m != MATCH_YES) | |
8423 | return m; | |
8424 | ||
8425 | if (find_special (name, &sym, true)) | |
8426 | return MATCH_ERROR; | |
8427 | ||
8428 | sym->attr.ext_attr |= attr.ext_attr; | |
8429 | ||
8430 | if (gfc_match_eos () == MATCH_YES) | |
8431 | break; | |
8432 | ||
8433 | if (gfc_match_char (',') != MATCH_YES) | |
8434 | goto syntax; | |
8435 | } | |
8436 | ||
8437 | return MATCH_YES; | |
8438 | ||
8439 | syntax: | |
8440 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8441 | return MATCH_ERROR; | |
8442 | } |