]>
Commit | Line | Data |
---|---|---|
6de9cd9a | 1 | /* Declaration statement matcher |
23a5b65a | 2 | Copyright (C) 2002-2014 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
6de9cd9a DN |
24 | #include "gfortran.h" |
25 | #include "match.h" | |
26 | #include "parse.h" | |
cab129d1 | 27 | #include "flags.h" |
b7e75771 | 28 | #include "constructor.h" |
62603fae | 29 | #include "tree.h" |
d8a2d370 | 30 | #include "stringpool.h" |
ca39e6f2 FXC |
31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
37 | |
38 | ||
524af0d6 | 39 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
40 | |
41 | ||
2054fc29 | 42 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
46fa431d | 47 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
57 | ||
a8b3b0b6 | 58 | /* The current binding label (if any). */ |
9975a30b | 59 | static const char* curr_binding_label; |
a8b3b0b6 CR |
60 | /* Need to know how many identifiers are on the current data declaration |
61 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
62 | static int num_idents_on_line; | |
63 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
64 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
65 | static int has_name_equals = 0; | |
66 | ||
25d8f0a2 TS |
67 | /* Initializer of the previous enumerator. */ |
68 | ||
69 | static gfc_expr *last_initializer; | |
70 | ||
71 | /* History of all the enumerators is maintained, so that | |
72 | kind values of all the enumerators could be updated depending | |
73 | upon the maximum initialized value. */ | |
74 | ||
75 | typedef struct enumerator_history | |
76 | { | |
77 | gfc_symbol *sym; | |
78 | gfc_expr *initializer; | |
79 | struct enumerator_history *next; | |
80 | } | |
81 | enumerator_history; | |
82 | ||
83 | /* Header of enum history chain. */ | |
84 | ||
85 | static enumerator_history *enum_history = NULL; | |
86 | ||
87 | /* Pointer of enum history node containing largest initializer. */ | |
88 | ||
89 | static enumerator_history *max_enum = NULL; | |
90 | ||
6de9cd9a DN |
91 | /* gfc_new_block points to the symbol of a newly matched block. */ |
92 | ||
93 | gfc_symbol *gfc_new_block; | |
94 | ||
1c8bcdf7 | 95 | bool gfc_matching_function; |
e2d29968 | 96 | |
6de9cd9a | 97 | |
294fbfc8 TS |
98 | /********************* DATA statement subroutines *********************/ |
99 | ||
2220652d PT |
100 | static bool in_match_data = false; |
101 | ||
102 | bool | |
103 | gfc_in_match_data (void) | |
104 | { | |
105 | return in_match_data; | |
106 | } | |
107 | ||
ca39e6f2 FXC |
108 | static void |
109 | set_in_match_data (bool set_value) | |
2220652d PT |
110 | { |
111 | in_match_data = set_value; | |
112 | } | |
113 | ||
294fbfc8 TS |
114 | /* Free a gfc_data_variable structure and everything beneath it. */ |
115 | ||
116 | static void | |
636dff67 | 117 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
118 | { |
119 | gfc_data_variable *q; | |
120 | ||
121 | for (; p; p = q) | |
122 | { | |
123 | q = p->next; | |
124 | gfc_free_expr (p->expr); | |
125 | gfc_free_iterator (&p->iter, 0); | |
126 | free_variable (p->list); | |
cede9502 | 127 | free (p); |
294fbfc8 TS |
128 | } |
129 | } | |
130 | ||
131 | ||
132 | /* Free a gfc_data_value structure and everything beneath it. */ | |
133 | ||
134 | static void | |
636dff67 | 135 | free_value (gfc_data_value *p) |
294fbfc8 TS |
136 | { |
137 | gfc_data_value *q; | |
138 | ||
139 | for (; p; p = q) | |
140 | { | |
141 | q = p->next; | |
c9d75a48 | 142 | mpz_clear (p->repeat); |
294fbfc8 | 143 | gfc_free_expr (p->expr); |
cede9502 | 144 | free (p); |
294fbfc8 TS |
145 | } |
146 | } | |
147 | ||
148 | ||
149 | /* Free a list of gfc_data structures. */ | |
150 | ||
151 | void | |
636dff67 | 152 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
153 | { |
154 | gfc_data *q; | |
155 | ||
156 | for (; p; p = q) | |
157 | { | |
158 | q = p->next; | |
294fbfc8 TS |
159 | free_variable (p->var); |
160 | free_value (p->value); | |
cede9502 | 161 | free (p); |
294fbfc8 TS |
162 | } |
163 | } | |
164 | ||
165 | ||
a9f6f1f2 | 166 | /* Free all data in a namespace. */ |
636dff67 | 167 | |
a9f6f1f2 | 168 | static void |
66e4ab31 | 169 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
170 | { |
171 | gfc_data *d; | |
172 | ||
173 | for (;ns->data;) | |
174 | { | |
175 | d = ns->data->next; | |
cede9502 | 176 | free (ns->data); |
a9f6f1f2 JD |
177 | ns->data = d; |
178 | } | |
179 | } | |
180 | ||
181 | ||
294fbfc8 TS |
182 | static match var_element (gfc_data_variable *); |
183 | ||
184 | /* Match a list of variables terminated by an iterator and a right | |
185 | parenthesis. */ | |
186 | ||
187 | static match | |
636dff67 | 188 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
189 | { |
190 | gfc_data_variable *tail, var; | |
191 | match m; | |
192 | ||
193 | m = var_element (&var); | |
194 | if (m == MATCH_ERROR) | |
195 | return MATCH_ERROR; | |
196 | if (m == MATCH_NO) | |
197 | goto syntax; | |
198 | ||
199 | tail = gfc_get_data_variable (); | |
200 | *tail = var; | |
201 | ||
202 | parent->list = tail; | |
203 | ||
204 | for (;;) | |
205 | { | |
206 | if (gfc_match_char (',') != MATCH_YES) | |
207 | goto syntax; | |
208 | ||
209 | m = gfc_match_iterator (&parent->iter, 1); | |
210 | if (m == MATCH_YES) | |
211 | break; | |
212 | if (m == MATCH_ERROR) | |
213 | return MATCH_ERROR; | |
214 | ||
215 | m = var_element (&var); | |
216 | if (m == MATCH_ERROR) | |
217 | return MATCH_ERROR; | |
218 | if (m == MATCH_NO) | |
219 | goto syntax; | |
220 | ||
221 | tail->next = gfc_get_data_variable (); | |
222 | tail = tail->next; | |
223 | ||
224 | *tail = var; | |
225 | } | |
226 | ||
227 | if (gfc_match_char (')') != MATCH_YES) | |
228 | goto syntax; | |
229 | return MATCH_YES; | |
230 | ||
231 | syntax: | |
232 | gfc_syntax_error (ST_DATA); | |
233 | return MATCH_ERROR; | |
234 | } | |
235 | ||
236 | ||
237 | /* Match a single element in a data variable list, which can be a | |
238 | variable-iterator list. */ | |
239 | ||
240 | static match | |
7b901ac4 | 241 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
242 | { |
243 | match m; | |
244 | gfc_symbol *sym; | |
245 | ||
7b901ac4 | 246 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
247 | |
248 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 249 | return var_list (new_var); |
294fbfc8 | 250 | |
7b901ac4 | 251 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
252 | if (m != MATCH_YES) |
253 | return m; | |
254 | ||
7b901ac4 | 255 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 256 | |
f37e928c | 257 | /* Symbol should already have an associated type. */ |
524af0d6 | 258 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
259 | return MATCH_ERROR; |
260 | ||
636dff67 SK |
261 | if (!sym->attr.function && gfc_current_ns->parent |
262 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 263 | { |
4075a94e | 264 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
e25a0da3 | 265 | "statement at %C", sym->name); |
294fbfc8 TS |
266 | return MATCH_ERROR; |
267 | } | |
268 | ||
4075a94e | 269 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 270 | && sym->attr.in_common |
524af0d6 JB |
271 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
272 | "common block variable '%s' in DATA statement at %C", | |
273 | sym->name)) | |
4075a94e | 274 | return MATCH_ERROR; |
294fbfc8 | 275 | |
524af0d6 | 276 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
277 | return MATCH_ERROR; |
278 | ||
279 | return MATCH_YES; | |
280 | } | |
281 | ||
282 | ||
283 | /* Match the top-level list of data variables. */ | |
284 | ||
285 | static match | |
636dff67 | 286 | top_var_list (gfc_data *d) |
294fbfc8 | 287 | { |
7b901ac4 | 288 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
289 | match m; |
290 | ||
291 | tail = NULL; | |
292 | ||
293 | for (;;) | |
294 | { | |
295 | m = var_element (&var); | |
296 | if (m == MATCH_NO) | |
297 | goto syntax; | |
298 | if (m == MATCH_ERROR) | |
299 | return MATCH_ERROR; | |
300 | ||
7b901ac4 KG |
301 | new_var = gfc_get_data_variable (); |
302 | *new_var = var; | |
294fbfc8 TS |
303 | |
304 | if (tail == NULL) | |
7b901ac4 | 305 | d->var = new_var; |
294fbfc8 | 306 | else |
7b901ac4 | 307 | tail->next = new_var; |
294fbfc8 | 308 | |
7b901ac4 | 309 | tail = new_var; |
294fbfc8 TS |
310 | |
311 | if (gfc_match_char ('/') == MATCH_YES) | |
312 | break; | |
313 | if (gfc_match_char (',') != MATCH_YES) | |
314 | goto syntax; | |
315 | } | |
316 | ||
317 | return MATCH_YES; | |
318 | ||
319 | syntax: | |
320 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 321 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
322 | return MATCH_ERROR; |
323 | } | |
324 | ||
325 | ||
326 | static match | |
636dff67 | 327 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
328 | { |
329 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 330 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
331 | gfc_expr *expr; |
332 | match m; | |
36d3fb4c | 333 | locus old_loc; |
294fbfc8 TS |
334 | |
335 | m = gfc_match_literal_constant (&expr, 1); | |
336 | if (m == MATCH_YES) | |
337 | { | |
338 | *result = expr; | |
339 | return MATCH_YES; | |
340 | } | |
341 | ||
342 | if (m == MATCH_ERROR) | |
343 | return MATCH_ERROR; | |
344 | ||
345 | m = gfc_match_null (result); | |
346 | if (m != MATCH_NO) | |
347 | return m; | |
348 | ||
36d3fb4c PT |
349 | old_loc = gfc_current_locus; |
350 | ||
351 | /* Should this be a structure component, try to match it | |
352 | before matching a name. */ | |
353 | m = gfc_match_rvalue (result); | |
354 | if (m == MATCH_ERROR) | |
355 | return m; | |
356 | ||
357 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
358 | { | |
524af0d6 | 359 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
360 | m = MATCH_ERROR; |
361 | return m; | |
362 | } | |
46f4f794 TB |
363 | else if (m == MATCH_YES) |
364 | gfc_free_expr (*result); | |
36d3fb4c PT |
365 | |
366 | gfc_current_locus = old_loc; | |
367 | ||
294fbfc8 TS |
368 | m = gfc_match_name (name); |
369 | if (m != MATCH_YES) | |
370 | return m; | |
371 | ||
372 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
373 | return MATCH_ERROR; | |
374 | ||
c3f34952 TB |
375 | if (sym && sym->attr.generic) |
376 | dt_sym = gfc_find_dt_in_generic (sym); | |
377 | ||
294fbfc8 | 378 | if (sym == NULL |
c3f34952 TB |
379 | || (sym->attr.flavor != FL_PARAMETER |
380 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
294fbfc8 TS |
381 | { |
382 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
383 | name); | |
384 | return MATCH_ERROR; | |
385 | } | |
c3f34952 TB |
386 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
387 | return gfc_match_structure_constructor (dt_sym, result); | |
294fbfc8 | 388 | |
d46e0870 JD |
389 | /* Check to see if the value is an initialization array expression. */ |
390 | if (sym->value->expr_type == EXPR_ARRAY) | |
391 | { | |
392 | gfc_current_locus = old_loc; | |
393 | ||
394 | m = gfc_match_init_expr (result); | |
395 | if (m == MATCH_ERROR) | |
396 | return m; | |
397 | ||
398 | if (m == MATCH_YES) | |
399 | { | |
524af0d6 | 400 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
401 | m = MATCH_ERROR; |
402 | ||
403 | if ((*result)->expr_type == EXPR_CONSTANT) | |
404 | return m; | |
405 | else | |
406 | { | |
407 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
408 | return MATCH_ERROR; | |
409 | } | |
410 | } | |
411 | } | |
412 | ||
294fbfc8 TS |
413 | *result = gfc_copy_expr (sym->value); |
414 | return MATCH_YES; | |
415 | } | |
416 | ||
417 | ||
418 | /* Match a list of values in a DATA statement. The leading '/' has | |
419 | already been seen at this point. */ | |
420 | ||
421 | static match | |
636dff67 | 422 | top_val_list (gfc_data *data) |
294fbfc8 | 423 | { |
7b901ac4 | 424 | gfc_data_value *new_val, *tail; |
294fbfc8 | 425 | gfc_expr *expr; |
294fbfc8 TS |
426 | match m; |
427 | ||
428 | tail = NULL; | |
429 | ||
430 | for (;;) | |
431 | { | |
432 | m = match_data_constant (&expr); | |
433 | if (m == MATCH_NO) | |
434 | goto syntax; | |
435 | if (m == MATCH_ERROR) | |
436 | return MATCH_ERROR; | |
437 | ||
7b901ac4 KG |
438 | new_val = gfc_get_data_value (); |
439 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
440 | |
441 | if (tail == NULL) | |
7b901ac4 | 442 | data->value = new_val; |
294fbfc8 | 443 | else |
7b901ac4 | 444 | tail->next = new_val; |
294fbfc8 | 445 | |
7b901ac4 | 446 | tail = new_val; |
294fbfc8 TS |
447 | |
448 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
449 | { | |
450 | tail->expr = expr; | |
f2112868 | 451 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
452 | } |
453 | else | |
454 | { | |
46f4f794 | 455 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 456 | gfc_free_expr (expr); |
294fbfc8 TS |
457 | |
458 | m = match_data_constant (&tail->expr); | |
459 | if (m == MATCH_NO) | |
460 | goto syntax; | |
461 | if (m == MATCH_ERROR) | |
462 | return MATCH_ERROR; | |
463 | } | |
464 | ||
465 | if (gfc_match_char ('/') == MATCH_YES) | |
466 | break; | |
467 | if (gfc_match_char (',') == MATCH_NO) | |
468 | goto syntax; | |
469 | } | |
470 | ||
471 | return MATCH_YES; | |
472 | ||
473 | syntax: | |
474 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 475 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
476 | return MATCH_ERROR; |
477 | } | |
478 | ||
479 | ||
480 | /* Matches an old style initialization. */ | |
481 | ||
482 | static match | |
483 | match_old_style_init (const char *name) | |
484 | { | |
485 | match m; | |
486 | gfc_symtree *st; | |
ed0e3607 | 487 | gfc_symbol *sym; |
294fbfc8 TS |
488 | gfc_data *newdata; |
489 | ||
490 | /* Set up data structure to hold initializers. */ | |
491 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
492 | sym = st->n.sym; |
493 | ||
294fbfc8 TS |
494 | newdata = gfc_get_data (); |
495 | newdata->var = gfc_get_data_variable (); | |
496 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 497 | newdata->where = gfc_current_locus; |
294fbfc8 | 498 | |
66e4ab31 | 499 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
500 | m = top_val_list (newdata); |
501 | if (m != MATCH_YES) | |
502 | { | |
cede9502 | 503 | free (newdata); |
294fbfc8 TS |
504 | return m; |
505 | } | |
506 | ||
507 | if (gfc_pure (NULL)) | |
508 | { | |
509 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 510 | free (newdata); |
294fbfc8 TS |
511 | return MATCH_ERROR; |
512 | } | |
ccd7751b | 513 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 514 | |
ed0e3607 | 515 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 516 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 517 | { |
cede9502 | 518 | free (newdata); |
ed0e3607 AL |
519 | return MATCH_ERROR; |
520 | } | |
521 | ||
294fbfc8 TS |
522 | /* Chain in namespace list of DATA initializers. */ |
523 | newdata->next = gfc_current_ns->data; | |
524 | gfc_current_ns->data = newdata; | |
525 | ||
526 | return m; | |
527 | } | |
528 | ||
636dff67 | 529 | |
294fbfc8 | 530 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 531 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 532 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 533 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
534 | |
535 | match | |
536 | gfc_match_data (void) | |
537 | { | |
7b901ac4 | 538 | gfc_data *new_data; |
294fbfc8 TS |
539 | match m; |
540 | ||
ca39e6f2 | 541 | set_in_match_data (true); |
2220652d | 542 | |
294fbfc8 TS |
543 | for (;;) |
544 | { | |
7b901ac4 KG |
545 | new_data = gfc_get_data (); |
546 | new_data->where = gfc_current_locus; | |
294fbfc8 | 547 | |
7b901ac4 | 548 | m = top_var_list (new_data); |
294fbfc8 TS |
549 | if (m != MATCH_YES) |
550 | goto cleanup; | |
551 | ||
7b901ac4 | 552 | m = top_val_list (new_data); |
294fbfc8 TS |
553 | if (m != MATCH_YES) |
554 | goto cleanup; | |
555 | ||
7b901ac4 KG |
556 | new_data->next = gfc_current_ns->data; |
557 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
558 | |
559 | if (gfc_match_eos () == MATCH_YES) | |
560 | break; | |
561 | ||
562 | gfc_match_char (','); /* Optional comma */ | |
563 | } | |
564 | ||
ca39e6f2 | 565 | set_in_match_data (false); |
2220652d | 566 | |
294fbfc8 TS |
567 | if (gfc_pure (NULL)) |
568 | { | |
569 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
570 | return MATCH_ERROR; | |
571 | } | |
ccd7751b | 572 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 573 | |
294fbfc8 TS |
574 | return MATCH_YES; |
575 | ||
576 | cleanup: | |
ca39e6f2 | 577 | set_in_match_data (false); |
7b901ac4 | 578 | gfc_free_data (new_data); |
294fbfc8 TS |
579 | return MATCH_ERROR; |
580 | } | |
581 | ||
582 | ||
583 | /************************ Declaration statements *********************/ | |
584 | ||
d3a9eea2 | 585 | |
eea58adb | 586 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 587 | |
524af0d6 | 588 | static bool |
d3a9eea2 TB |
589 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
590 | { | |
591 | int i; | |
592 | ||
63fbf586 TB |
593 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
594 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
595 | { | |
596 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 597 | return false; |
63fbf586 | 598 | } |
c62c6622 | 599 | |
d3a9eea2 TB |
600 | if (to->rank == 0 && from->rank > 0) |
601 | { | |
602 | to->rank = from->rank; | |
603 | to->type = from->type; | |
604 | to->cray_pointee = from->cray_pointee; | |
605 | to->cp_was_assumed = from->cp_was_assumed; | |
606 | ||
607 | for (i = 0; i < to->corank; i++) | |
608 | { | |
609 | to->lower[from->rank + i] = to->lower[i]; | |
610 | to->upper[from->rank + i] = to->upper[i]; | |
611 | } | |
612 | for (i = 0; i < from->rank; i++) | |
613 | { | |
614 | if (copy) | |
615 | { | |
616 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
617 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
618 | } | |
619 | else | |
620 | { | |
621 | to->lower[i] = from->lower[i]; | |
622 | to->upper[i] = from->upper[i]; | |
623 | } | |
624 | } | |
625 | } | |
626 | else if (to->corank == 0 && from->corank > 0) | |
627 | { | |
628 | to->corank = from->corank; | |
629 | to->cotype = from->cotype; | |
630 | ||
631 | for (i = 0; i < from->corank; i++) | |
632 | { | |
633 | if (copy) | |
634 | { | |
635 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
636 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
637 | } | |
638 | else | |
639 | { | |
640 | to->lower[to->rank + i] = from->lower[i]; | |
641 | to->upper[to->rank + i] = from->upper[i]; | |
642 | } | |
643 | } | |
644 | } | |
63fbf586 | 645 | |
524af0d6 | 646 | return true; |
d3a9eea2 TB |
647 | } |
648 | ||
649 | ||
6de9cd9a DN |
650 | /* Match an intent specification. Since this can only happen after an |
651 | INTENT word, a legal intent-spec must follow. */ | |
652 | ||
653 | static sym_intent | |
654 | match_intent_spec (void) | |
655 | { | |
656 | ||
657 | if (gfc_match (" ( in out )") == MATCH_YES) | |
658 | return INTENT_INOUT; | |
659 | if (gfc_match (" ( in )") == MATCH_YES) | |
660 | return INTENT_IN; | |
661 | if (gfc_match (" ( out )") == MATCH_YES) | |
662 | return INTENT_OUT; | |
663 | ||
664 | gfc_error ("Bad INTENT specification at %C"); | |
665 | return INTENT_UNKNOWN; | |
666 | } | |
667 | ||
668 | ||
669 | /* Matches a character length specification, which is either a | |
e69afb29 | 670 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
671 | |
672 | static match | |
e69afb29 | 673 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 674 | { |
cba28dad JD |
675 | match m; |
676 | ||
e69afb29 SK |
677 | *expr = NULL; |
678 | *deferred = false; | |
679 | ||
6de9cd9a | 680 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
681 | return MATCH_YES; |
682 | ||
683 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 684 | { |
524af0d6 JB |
685 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type " |
686 | "parameter at %C")) | |
e69afb29 SK |
687 | return MATCH_ERROR; |
688 | ||
689 | *deferred = true; | |
690 | ||
6de9cd9a DN |
691 | return MATCH_YES; |
692 | } | |
693 | ||
cba28dad | 694 | m = gfc_match_expr (expr); |
f37e928c DK |
695 | |
696 | if (m == MATCH_YES | |
524af0d6 | 697 | && !gfc_expr_check_typed (*expr, gfc_current_ns, false)) |
f37e928c DK |
698 | return MATCH_ERROR; |
699 | ||
cba28dad JD |
700 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
701 | { | |
702 | if ((*expr)->value.function.actual | |
703 | && (*expr)->value.function.actual->expr->symtree) | |
704 | { | |
705 | gfc_expr *e; | |
706 | e = (*expr)->value.function.actual->expr; | |
707 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
708 | && e->expr_type == EXPR_VARIABLE) | |
709 | { | |
710 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
711 | goto syntax; | |
712 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
713 | && e->symtree->n.sym->ts.u.cl |
714 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
cba28dad JD |
715 | goto syntax; |
716 | } | |
717 | } | |
718 | } | |
719 | return m; | |
720 | ||
721 | syntax: | |
722 | gfc_error ("Conflict in attributes of function argument at %C"); | |
723 | return MATCH_ERROR; | |
6de9cd9a DN |
724 | } |
725 | ||
726 | ||
727 | /* A character length is a '*' followed by a literal integer or a | |
728 | char_len_param_value in parenthesis. */ | |
729 | ||
730 | static match | |
62732c30 | 731 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 732 | { |
5cf54585 | 733 | int length; |
6de9cd9a DN |
734 | match m; |
735 | ||
f5acf0f2 | 736 | *deferred = false; |
6de9cd9a DN |
737 | m = gfc_match_char ('*'); |
738 | if (m != MATCH_YES) | |
739 | return m; | |
740 | ||
5cf54585 | 741 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
742 | if (m == MATCH_ERROR) |
743 | return m; | |
744 | ||
745 | if (m == MATCH_YES) | |
746 | { | |
62732c30 | 747 | if (obsolescent_check |
524af0d6 | 748 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 749 | return MATCH_ERROR; |
b7e75771 | 750 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
751 | return m; |
752 | } | |
753 | ||
754 | if (gfc_match_char ('(') == MATCH_NO) | |
755 | goto syntax; | |
756 | ||
e69afb29 | 757 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
758 | if (m != MATCH_YES && gfc_matching_function) |
759 | { | |
760 | gfc_undo_symbols (); | |
761 | m = MATCH_YES; | |
762 | } | |
763 | ||
6de9cd9a DN |
764 | if (m == MATCH_ERROR) |
765 | return m; | |
766 | if (m == MATCH_NO) | |
767 | goto syntax; | |
768 | ||
769 | if (gfc_match_char (')') == MATCH_NO) | |
770 | { | |
771 | gfc_free_expr (*expr); | |
772 | *expr = NULL; | |
773 | goto syntax; | |
774 | } | |
775 | ||
776 | return MATCH_YES; | |
777 | ||
778 | syntax: | |
779 | gfc_error ("Syntax error in character length specification at %C"); | |
780 | return MATCH_ERROR; | |
781 | } | |
782 | ||
783 | ||
9e35b386 EE |
784 | /* Special subroutine for finding a symbol. Check if the name is found |
785 | in the current name space. If not, and we're compiling a function or | |
786 | subroutine and the parent compilation unit is an interface, then check | |
787 | to see if the name we've been given is the name of the interface | |
788 | (located in another namespace). */ | |
6de9cd9a DN |
789 | |
790 | static int | |
08a6b8e0 | 791 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
792 | { |
793 | gfc_state_data *s; | |
08a6b8e0 | 794 | gfc_symtree *st; |
9e35b386 | 795 | int i; |
6de9cd9a | 796 | |
08a6b8e0 | 797 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 798 | if (i == 0) |
08a6b8e0 TB |
799 | { |
800 | *result = st ? st->n.sym : NULL; | |
801 | goto end; | |
802 | } | |
d51347f9 | 803 | |
6de9cd9a DN |
804 | if (gfc_current_state () != COMP_SUBROUTINE |
805 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 806 | goto end; |
6de9cd9a DN |
807 | |
808 | s = gfc_state_stack->previous; | |
809 | if (s == NULL) | |
9e35b386 | 810 | goto end; |
6de9cd9a DN |
811 | |
812 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 813 | goto end; |
6de9cd9a | 814 | if (s->sym == NULL) |
66e4ab31 | 815 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
816 | |
817 | if (strcmp (name, s->sym->name) == 0) | |
818 | { | |
819 | *result = s->sym; | |
820 | return 0; | |
821 | } | |
822 | ||
9e35b386 EE |
823 | end: |
824 | return i; | |
6de9cd9a DN |
825 | } |
826 | ||
827 | ||
828 | /* Special subroutine for getting a symbol node associated with a | |
829 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
830 | symbol is created in the parent using with symtree node in the | |
831 | child unit pointing to the symbol. If the current namespace has no | |
832 | parent, then the symbol is just created in the current unit. */ | |
833 | ||
834 | static int | |
636dff67 | 835 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
836 | { |
837 | gfc_symtree *st; | |
838 | gfc_symbol *sym; | |
a7ca4d8d | 839 | int rc = 0; |
6de9cd9a | 840 | |
1a492601 PT |
841 | /* Module functions have to be left in their own namespace because |
842 | they have potentially (almost certainly!) already been referenced. | |
843 | In this sense, they are rather like external functions. This is | |
844 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
845 | space is set to point to the master function, so that the fake | |
846 | result mechanism can work. */ | |
847 | if (module_fcn_entry) | |
6c12686b PT |
848 | { |
849 | /* Present if entry is declared to be a module procedure. */ | |
850 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 851 | |
6c12686b PT |
852 | if (*result == NULL) |
853 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 854 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
855 | && (*result)->ts.type == BT_UNKNOWN |
856 | && sym->attr.flavor == FL_UNKNOWN) | |
857 | /* Pick up the typespec for the entry, if declared in the function | |
858 | body. Note that this symbol is FL_UNKNOWN because it will | |
859 | only have appeared in a type declaration. The local symtree | |
860 | is set to point to the module symbol and a unique symtree | |
861 | to the local version. This latter ensures a correct clearing | |
862 | of the symbols. */ | |
2e32a71e PT |
863 | { |
864 | /* If the ENTRY proceeds its specification, we need to ensure | |
865 | that this does not raise a "has no IMPLICIT type" error. */ | |
866 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 867 | sym->attr.untyped = 1; |
2e32a71e | 868 | |
0e5a218b | 869 | (*result)->ts = sym->ts; |
2e32a71e PT |
870 | |
871 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 872 | the ENTRY precede its specification, the specification |
2e32a71e PT |
873 | can be applied. */ |
874 | (*result)->ns = gfc_current_ns; | |
875 | ||
876 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
877 | st->n.sym = *result; | |
878 | st = gfc_get_unique_symtree (gfc_current_ns); | |
879 | st->n.sym = sym; | |
880 | } | |
6c12686b | 881 | } |
68ea355b PT |
882 | else |
883 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 884 | |
a7ca4d8d PT |
885 | if (rc) |
886 | return rc; | |
887 | ||
68ea355b | 888 | sym = *result; |
6de9cd9a | 889 | |
7b901ac4 | 890 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
68ea355b | 891 | { |
cda7004b PT |
892 | /* Trap another encompassed procedure with the same name. All |
893 | these conditions are necessary to avoid picking up an entry | |
894 | whose name clashes with that of the encompassing procedure; | |
895 | this is handled using gsymbols to register unique,globally | |
896 | accessible names. */ | |
68ea355b | 897 | if (sym->attr.flavor != 0 |
636dff67 SK |
898 | && sym->attr.proc != 0 |
899 | && (sym->attr.subroutine || sym->attr.function) | |
900 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
68ea355b PT |
901 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
902 | name, &sym->declared_at); | |
903 | ||
fd3e70af JD |
904 | /* Trap a procedure with a name the same as interface in the |
905 | encompassing scope. */ | |
906 | if (sym->attr.generic != 0 | |
2305fa31 JD |
907 | && (sym->attr.subroutine || sym->attr.function) |
908 | && !sym->attr.mod_proc) | |
fd3e70af JD |
909 | gfc_error_now ("Name '%s' at %C is already defined" |
910 | " as a generic interface at %L", | |
911 | name, &sym->declared_at); | |
912 | ||
68ea355b PT |
913 | /* Trap declarations of attributes in encompassing scope. The |
914 | signature for this is that ts.kind is set. Legitimate | |
915 | references only set ts.type. */ | |
916 | if (sym->ts.kind != 0 | |
636dff67 SK |
917 | && !sym->attr.implicit_type |
918 | && sym->attr.proc == 0 | |
919 | && gfc_current_ns->parent != NULL | |
920 | && sym->attr.access == 0 | |
921 | && !module_fcn_entry) | |
922 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
923 | "and must not have attributes declared at %L", | |
68ea355b PT |
924 | name, &sym->declared_at); |
925 | } | |
926 | ||
927 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
928 | return rc; | |
6de9cd9a | 929 | |
1a492601 PT |
930 | /* Module function entries will already have a symtree in |
931 | the current namespace but will need one at module level. */ | |
932 | if (module_fcn_entry) | |
6c12686b PT |
933 | { |
934 | /* Present if entry is declared to be a module procedure. */ | |
935 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
936 | if (st == NULL) | |
937 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
938 | } | |
1a492601 PT |
939 | else |
940 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 941 | |
6de9cd9a DN |
942 | st->n.sym = sym; |
943 | sym->refs++; | |
944 | ||
66e4ab31 | 945 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 946 | |
1a492601 | 947 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
948 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
949 | && sym->attr.proc != PROC_MODULE) | |
950 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 951 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
952 | rc = 2; |
953 | ||
954 | return rc; | |
955 | } | |
956 | ||
957 | ||
a8b3b0b6 CR |
958 | /* Verify that the given symbol representing a parameter is C |
959 | interoperable, by checking to see if it was marked as such after | |
960 | its declaration. If the given symbol is not interoperable, a | |
961 | warning is reported, thus removing the need to return the status to | |
962 | the calling function. The standard does not require the user use | |
963 | one of the iso_c_binding named constants to declare an | |
964 | interoperable parameter, but we can't be sure if the param is C | |
965 | interop or not if the user doesn't. For example, integer(4) may be | |
966 | legal Fortran, but doesn't have meaning in C. It may interop with | |
967 | a number of the C types, which causes a problem because the | |
968 | compiler can't know which one. This code is almost certainly not | |
969 | portable, and the user will get what they deserve if the C type | |
970 | across platforms isn't always interoperable with integer(4). If | |
971 | the user had used something like integer(c_int) or integer(c_long), | |
972 | the compiler could have automatically handled the varying sizes | |
973 | across platforms. */ | |
974 | ||
524af0d6 | 975 | bool |
00820a2a | 976 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
977 | { |
978 | int is_c_interop = 0; | |
524af0d6 | 979 | bool retval = true; |
a8b3b0b6 CR |
980 | |
981 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
982 | Don't repeat the checks here. */ | |
983 | if (sym->attr.implicit_type) | |
524af0d6 | 984 | return true; |
f5acf0f2 | 985 | |
a8b3b0b6 CR |
986 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
987 | they're interoperable if they're BIND(C) and their params are all | |
988 | interoperable. */ | |
989 | if (sym->attr.flavor == FL_PROCEDURE) | |
990 | { | |
991 | if (sym->attr.is_bind_c == 0) | |
992 | { | |
993 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
994 | "attribute to be C interoperable", sym->name, | |
995 | &(sym->declared_at)); | |
f5acf0f2 | 996 | |
524af0d6 | 997 | return false; |
a8b3b0b6 CR |
998 | } |
999 | else | |
1000 | { | |
1001 | if (sym->attr.is_c_interop == 1) | |
1002 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1003 | return true; |
a8b3b0b6 CR |
1004 | else |
1005 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1006 | sym->common_block); | |
1007 | } | |
1008 | } | |
f5acf0f2 | 1009 | |
a8b3b0b6 CR |
1010 | /* See if we've stored a reference to a procedure that owns sym. */ |
1011 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1012 | { | |
1013 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1014 | { | |
524af0d6 | 1015 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1016 | |
1017 | if (is_c_interop != 1) | |
1018 | { | |
1019 | /* Make personalized messages to give better feedback. */ | |
1020 | if (sym->ts.type == BT_DERIVED) | |
00820a2a JW |
1021 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1022 | "BIND(C) procedure '%s' but is not C interoperable " | |
a8b3b0b6 CR |
1023 | "because derived type '%s' is not C interoperable", |
1024 | sym->name, &(sym->declared_at), | |
f5acf0f2 | 1025 | sym->ns->proc_name->name, |
bc21d315 | 1026 | sym->ts.u.derived->name); |
00820a2a JW |
1027 | else if (sym->ts.type == BT_CLASS) |
1028 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1029 | "BIND(C) procedure '%s' but is not C interoperable " | |
1030 | "because it is polymorphic", | |
1031 | sym->name, &(sym->declared_at), | |
1032 | sym->ns->proc_name->name); | |
7fe3aa08 TB |
1033 | else if (gfc_option.warn_c_binding_type) |
1034 | gfc_warning ("Variable '%s' at %L is a dummy argument of the " | |
a8b3b0b6 CR |
1035 | "BIND(C) procedure '%s' but may not be C " |
1036 | "interoperable", | |
1037 | sym->name, &(sym->declared_at), | |
1038 | sym->ns->proc_name->name); | |
1039 | } | |
aa5e22f0 CR |
1040 | |
1041 | /* Character strings are only C interoperable if they have a | |
1042 | length of 1. */ | |
1043 | if (sym->ts.type == BT_CHARACTER) | |
1044 | { | |
bc21d315 | 1045 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1046 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1047 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1048 | { | |
1049 | gfc_error ("Character argument '%s' at %L " | |
1050 | "must be length 1 because " | |
1051 | "procedure '%s' is BIND(C)", | |
1052 | sym->name, &sym->declared_at, | |
1053 | sym->ns->proc_name->name); | |
524af0d6 | 1054 | retval = false; |
aa5e22f0 CR |
1055 | } |
1056 | } | |
1057 | ||
a8b3b0b6 CR |
1058 | /* We have to make sure that any param to a bind(c) routine does |
1059 | not have the allocatable, pointer, or optional attributes, | |
1060 | according to J3/04-007, section 5.1. */ | |
60f6ca95 TB |
1061 | if (sym->attr.allocatable == 1 |
1062 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' at %L with " | |
1063 | "ALLOCATABLE attribute in procedure '%s' " | |
1064 | "with BIND(C)", sym->name, | |
1065 | &(sym->declared_at), | |
1066 | sym->ns->proc_name->name)) | |
1067 | retval = false; | |
1068 | ||
1069 | if (sym->attr.pointer == 1 | |
1070 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' at %L with " | |
1071 | "POINTER attribute in procedure '%s' " | |
1072 | "with BIND(C)", sym->name, | |
1073 | &(sym->declared_at), | |
1074 | sym->ns->proc_name->name)) | |
1075 | retval = false; | |
1076 | ||
1077 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1078 | { |
60f6ca95 TB |
1079 | gfc_error ("Scalar variable '%s' at %L with POINTER or " |
1080 | "ALLOCATABLE in procedure '%s' with BIND(C) is not yet" | |
1081 | " supported", sym->name, &(sym->declared_at), | |
a8b3b0b6 | 1082 | sym->ns->proc_name->name); |
524af0d6 | 1083 | retval = false; |
a8b3b0b6 CR |
1084 | } |
1085 | ||
2e8d9212 | 1086 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1087 | { |
2e8d9212 TB |
1088 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1089 | "and the VALUE attribute because procedure '%s' " | |
1090 | "is BIND(C)", sym->name, &(sym->declared_at), | |
a8b3b0b6 | 1091 | sym->ns->proc_name->name); |
524af0d6 | 1092 | retval = false; |
a8b3b0b6 | 1093 | } |
2e8d9212 | 1094 | else if (sym->attr.optional == 1 |
524af0d6 JB |
1095 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' " |
1096 | "at %L with OPTIONAL attribute in " | |
1097 | "procedure '%s' which is BIND(C)", | |
1098 | sym->name, &(sym->declared_at), | |
1099 | sym->ns->proc_name->name)) | |
1100 | retval = false; | |
a8b3b0b6 CR |
1101 | |
1102 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1103 | either assumed size or explicit shape. Deferred shape is already |
1104 | covered by the pointer/allocatable attribute. */ | |
1105 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
524af0d6 JB |
1106 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array '%s' " |
1107 | "at %L as dummy argument to the BIND(C) " | |
1108 | "procedure '%s' at %L", sym->name, | |
1109 | &(sym->declared_at), | |
1110 | sym->ns->proc_name->name, | |
1111 | &(sym->ns->proc_name->declared_at))) | |
1112 | retval = false; | |
a8b3b0b6 CR |
1113 | } |
1114 | } | |
1115 | ||
1116 | return retval; | |
1117 | } | |
1118 | ||
1119 | ||
cf2b3c22 | 1120 | |
a8b3b0b6 | 1121 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1122 | |
524af0d6 | 1123 | static bool |
e69afb29 | 1124 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1125 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1126 | { |
1127 | symbol_attribute attr; | |
1128 | gfc_symbol *sym; | |
1129 | ||
9e35b386 | 1130 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1131 | return false; |
6de9cd9a | 1132 | |
66e4ab31 | 1133 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1134 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1135 | && (sym->attr.implicit_type == 0 |
1136 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1137 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1138 | return false; | |
6de9cd9a DN |
1139 | |
1140 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1141 | { |
1142 | sym->ts.u.cl = cl; | |
1143 | sym->ts.deferred = cl_deferred; | |
1144 | } | |
6de9cd9a DN |
1145 | |
1146 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1147 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1148 | return false; | |
6de9cd9a DN |
1149 | *as = NULL; |
1150 | ||
1151 | /* Add attribute to symbol. The copy is so that we can reset the | |
1152 | dimension attribute. */ | |
1153 | attr = current_attr; | |
1154 | attr.dimension = 0; | |
be59db2d | 1155 | attr.codimension = 0; |
6de9cd9a | 1156 | |
524af0d6 JB |
1157 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1158 | return false; | |
6de9cd9a | 1159 | |
a8b3b0b6 CR |
1160 | /* Finish any work that may need to be done for the binding label, |
1161 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1162 | is made, and before the symbol name (for data decls), so the | |
1163 | current_ts is holding the binding label, or nothing if the | |
1164 | name= attr wasn't given. Therefore, test here if we're dealing | |
1165 | with a bind(c) and make sure the binding label is set correctly. */ | |
1166 | if (sym->attr.is_bind_c == 1) | |
1167 | { | |
62603fae | 1168 | if (!sym->binding_label) |
a8b3b0b6 | 1169 | { |
ad4a2f64 TB |
1170 | /* Set the binding label and verify that if a NAME= was specified |
1171 | then only one identifier was in the entity-decl-list. */ | |
524af0d6 JB |
1172 | if (!set_binding_label (&sym->binding_label, sym->name, |
1173 | num_idents_on_line)) | |
1174 | return false; | |
a8b3b0b6 CR |
1175 | } |
1176 | } | |
1177 | ||
1178 | /* See if we know we're in a common block, and if it's a bind(c) | |
1179 | common then we need to make sure we're an interoperable type. */ | |
1180 | if (sym->attr.in_common == 1) | |
1181 | { | |
1182 | /* Test the common block object. */ | |
1183 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1184 | && sym->ts.is_c_interop != 1) | |
1185 | { | |
1186 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1187 | "must be declared with a C interoperable " | |
1188 | "kind since common block '%s' is BIND(C)", | |
1189 | sym->name, sym->common_block->name, | |
1190 | sym->common_block->name); | |
1191 | gfc_clear_error (); | |
1192 | } | |
1193 | } | |
1194 | ||
9a3db5a3 PT |
1195 | sym->attr.implied_index = 0; |
1196 | ||
528622fd | 1197 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1198 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1199 | |
524af0d6 | 1200 | return true; |
6de9cd9a DN |
1201 | } |
1202 | ||
636dff67 | 1203 | |
df7cc9b5 | 1204 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1205 | truncated. If we're inside an array constructor without a typespec, we |
1206 | additionally check that all elements have the same length; check_len -1 | |
1207 | means no checking. */ | |
df7cc9b5 FW |
1208 | |
1209 | void | |
d2848082 | 1210 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1211 | { |
00660189 | 1212 | gfc_char_t *s; |
df7cc9b5 FW |
1213 | int slen; |
1214 | ||
1215 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1216 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1217 | |
1218 | slen = expr->value.character.length; | |
1219 | if (len != slen) | |
1220 | { | |
00660189 FXC |
1221 | s = gfc_get_wide_string (len + 1); |
1222 | memcpy (s, expr->value.character.string, | |
1223 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1224 | if (len > slen) |
00660189 | 1225 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d PT |
1226 | |
1227 | if (gfc_option.warn_character_truncation && slen > len) | |
1228 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1229 | "(%d/%d)", &expr->where, slen, len); | |
1230 | ||
1231 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1232 | initializers. */ | |
d2848082 DK |
1233 | if (check_len != -1 && slen != check_len |
1234 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1235 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1236 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1237 | &expr->where, slen, check_len); |
2220652d | 1238 | |
150675a8 | 1239 | s[len] = '\0'; |
cede9502 | 1240 | free (expr->value.character.string); |
df7cc9b5 FW |
1241 | expr->value.character.string = s; |
1242 | expr->value.character.length = len; | |
1243 | } | |
1244 | } | |
6de9cd9a | 1245 | |
25d8f0a2 | 1246 | |
d51347f9 | 1247 | /* Function to create and update the enumerator history |
25d8f0a2 | 1248 | using the information passed as arguments. |
d51347f9 TB |
1249 | Pointer "max_enum" is also updated, to point to |
1250 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1251 | |
1252 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1253 | INIT points to its enumerator value. */ |
25d8f0a2 | 1254 | |
d51347f9 | 1255 | static void |
636dff67 | 1256 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1257 | { |
1258 | enumerator_history *new_enum_history; | |
1259 | gcc_assert (sym != NULL && init != NULL); | |
1260 | ||
ece3f663 | 1261 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1262 | |
1263 | new_enum_history->sym = sym; | |
1264 | new_enum_history->initializer = init; | |
1265 | new_enum_history->next = NULL; | |
1266 | ||
1267 | if (enum_history == NULL) | |
1268 | { | |
1269 | enum_history = new_enum_history; | |
1270 | max_enum = enum_history; | |
1271 | } | |
1272 | else | |
1273 | { | |
1274 | new_enum_history->next = enum_history; | |
1275 | enum_history = new_enum_history; | |
1276 | ||
d51347f9 | 1277 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1278 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1279 | max_enum = new_enum_history; |
25d8f0a2 TS |
1280 | } |
1281 | } | |
1282 | ||
1283 | ||
d51347f9 | 1284 | /* Function to free enum kind history. */ |
25d8f0a2 | 1285 | |
d51347f9 | 1286 | void |
636dff67 | 1287 | gfc_free_enum_history (void) |
25d8f0a2 | 1288 | { |
d51347f9 TB |
1289 | enumerator_history *current = enum_history; |
1290 | enumerator_history *next; | |
25d8f0a2 TS |
1291 | |
1292 | while (current != NULL) | |
1293 | { | |
1294 | next = current->next; | |
cede9502 | 1295 | free (current); |
25d8f0a2 TS |
1296 | current = next; |
1297 | } | |
1298 | max_enum = NULL; | |
1299 | enum_history = NULL; | |
1300 | } | |
1301 | ||
1302 | ||
6de9cd9a DN |
1303 | /* Function called by variable_decl() that adds an initialization |
1304 | expression to a symbol. */ | |
1305 | ||
524af0d6 | 1306 | static bool |
66e4ab31 | 1307 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1308 | { |
1309 | symbol_attribute attr; | |
1310 | gfc_symbol *sym; | |
1311 | gfc_expr *init; | |
1312 | ||
1313 | init = *initp; | |
08a6b8e0 | 1314 | if (find_special (name, &sym, false)) |
524af0d6 | 1315 | return false; |
6de9cd9a DN |
1316 | |
1317 | attr = sym->attr; | |
1318 | ||
1319 | /* If this symbol is confirming an implicit parameter type, | |
1320 | then an initialization expression is not allowed. */ | |
1321 | if (attr.flavor == FL_PARAMETER | |
1322 | && sym->value != NULL | |
1323 | && *initp != NULL) | |
1324 | { | |
1325 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1326 | sym->name); | |
524af0d6 | 1327 | return false; |
6de9cd9a DN |
1328 | } |
1329 | ||
1330 | if (init == NULL) | |
1331 | { | |
1332 | /* An initializer is required for PARAMETER declarations. */ | |
1333 | if (attr.flavor == FL_PARAMETER) | |
1334 | { | |
1335 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1336 | return false; |
6de9cd9a DN |
1337 | } |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1342 | initializer. */ |
6de9cd9a DN |
1343 | if (sym->attr.data) |
1344 | { | |
636dff67 SK |
1345 | gfc_error ("Variable '%s' at %C with an initializer already " |
1346 | "appears in a DATA statement", sym->name); | |
524af0d6 | 1347 | return false; |
6de9cd9a DN |
1348 | } |
1349 | ||
75d17889 | 1350 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1351 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1352 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1353 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1354 | && !sym->attr.proc_pointer |
524af0d6 JB |
1355 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1356 | return false; | |
6de9cd9a | 1357 | |
bc21d315 | 1358 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1359 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1360 | { |
1361 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1362 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1363 | return false; | |
51b128a0 | 1364 | |
bc21d315 | 1365 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1366 | { |
a99288e5 | 1367 | int clen; |
66e4ab31 SK |
1368 | /* If there are multiple CHARACTER variables declared on the |
1369 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1370 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1371 | |
a99288e5 PT |
1372 | if (sym->attr.flavor == FL_PARAMETER) |
1373 | { | |
1374 | if (init->expr_type == EXPR_CONSTANT) | |
1375 | { | |
1376 | clen = init->value.character.length; | |
b7e75771 JD |
1377 | sym->ts.u.cl->length |
1378 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1379 | NULL, clen); | |
a99288e5 PT |
1380 | } |
1381 | else if (init->expr_type == EXPR_ARRAY) | |
1382 | { | |
b7e75771 JD |
1383 | gfc_constructor *c; |
1384 | c = gfc_constructor_first (init->value.constructor); | |
1385 | clen = c->expr->value.character.length; | |
1386 | sym->ts.u.cl->length | |
1387 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1388 | NULL, clen); | |
a99288e5 | 1389 | } |
bc21d315 JW |
1390 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1391 | sym->ts.u.cl->length = | |
1392 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1393 | } |
df7cc9b5 FW |
1394 | } |
1395 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1396 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1397 | { |
bc21d315 | 1398 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
df7cc9b5 FW |
1399 | |
1400 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1401 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1402 | else if (init->expr_type == EXPR_ARRAY) |
1403 | { | |
b7e75771 JD |
1404 | gfc_constructor *c; |
1405 | ||
dcdc7b6c PT |
1406 | /* Build a new charlen to prevent simplification from |
1407 | deleting the length before it is resolved. */ | |
b76e28c6 | 1408 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1409 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1410 | |
b7e75771 JD |
1411 | for (c = gfc_constructor_first (init->value.constructor); |
1412 | c; c = gfc_constructor_next (c)) | |
1413 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1414 | } |
1415 | } | |
1416 | } | |
1417 | ||
f5ca06e6 DK |
1418 | /* If sym is implied-shape, set its upper bounds from init. */ |
1419 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1420 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1421 | { | |
1422 | int dim; | |
1423 | ||
1424 | if (init->rank == 0) | |
1425 | { | |
1426 | gfc_error ("Can't initialize implied-shape array at %L" | |
1427 | " with scalar", &sym->declared_at); | |
524af0d6 | 1428 | return false; |
f5ca06e6 DK |
1429 | } |
1430 | gcc_assert (sym->as->rank == init->rank); | |
1431 | ||
1432 | /* Shape should be present, we get an initialization expression. */ | |
1433 | gcc_assert (init->shape); | |
1434 | ||
1435 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1436 | { | |
1437 | int k; | |
1438 | gfc_expr* lower; | |
1439 | gfc_expr* e; | |
f5acf0f2 | 1440 | |
f5ca06e6 DK |
1441 | lower = sym->as->lower[dim]; |
1442 | if (lower->expr_type != EXPR_CONSTANT) | |
1443 | { | |
1444 | gfc_error ("Non-constant lower bound in implied-shape" | |
1445 | " declaration at %L", &lower->where); | |
524af0d6 | 1446 | return false; |
f5ca06e6 DK |
1447 | } |
1448 | ||
1449 | /* All dimensions must be without upper bound. */ | |
1450 | gcc_assert (!sym->as->upper[dim]); | |
1451 | ||
1452 | k = lower->ts.kind; | |
1453 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1454 | mpz_add (e->value.integer, | |
1455 | lower->value.integer, init->shape[dim]); | |
1456 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1457 | sym->as->upper[dim] = e; | |
1458 | } | |
1459 | ||
1460 | sym->as->type = AS_EXPLICIT; | |
1461 | } | |
1462 | ||
a8b3b0b6 CR |
1463 | /* Need to check if the expression we initialized this |
1464 | to was one of the iso_c_binding named constants. If so, | |
1465 | and we're a parameter (constant), let it be iso_c. | |
1466 | For example: | |
1467 | integer(c_int), parameter :: my_int = c_int | |
1468 | integer(my_int) :: my_int_2 | |
1469 | If we mark my_int as iso_c (since we can see it's value | |
1470 | is equal to one of the named constants), then my_int_2 | |
1471 | will be considered C interoperable. */ | |
1472 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1473 | { | |
1474 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1475 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1476 | /* attr bits needed for module files. */ | |
1477 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1478 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1479 | if (init->ts.is_iso_c) | |
1480 | sym->ts.f90_type = init->ts.f90_type; | |
1481 | } | |
b7e75771 | 1482 | |
6de9cd9a DN |
1483 | /* Add initializer. Make sure we keep the ranks sane. */ |
1484 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1485 | { |
1486 | mpz_t size; | |
1487 | gfc_expr *array; | |
a9b43781 PT |
1488 | int n; |
1489 | if (sym->attr.flavor == FL_PARAMETER | |
1490 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1491 | && spec_size (sym->as, &size) |
a9b43781 PT |
1492 | && mpz_cmp_si (size, 0) > 0) |
1493 | { | |
b7e75771 JD |
1494 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1495 | &init->where); | |
a9b43781 | 1496 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1497 | gfc_constructor_append_expr (&array->value.constructor, |
1498 | n == 0 | |
1499 | ? init | |
1500 | : gfc_copy_expr (init), | |
1501 | &init->where); | |
f5acf0f2 | 1502 | |
a9b43781 PT |
1503 | array->shape = gfc_get_shape (sym->as->rank); |
1504 | for (n = 0; n < sym->as->rank; n++) | |
1505 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1506 | ||
1507 | init = array; | |
1508 | mpz_clear (size); | |
1509 | } | |
1510 | init->rank = sym->as->rank; | |
1511 | } | |
6de9cd9a DN |
1512 | |
1513 | sym->value = init; | |
ef7236d2 DF |
1514 | if (sym->attr.save == SAVE_NONE) |
1515 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1516 | *initp = NULL; |
1517 | } | |
1518 | ||
524af0d6 | 1519 | return true; |
6de9cd9a DN |
1520 | } |
1521 | ||
1522 | ||
1523 | /* Function called by variable_decl() that adds a name to a structure | |
1524 | being built. */ | |
1525 | ||
524af0d6 | 1526 | static bool |
636dff67 SK |
1527 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1528 | gfc_array_spec **as) | |
6de9cd9a DN |
1529 | { |
1530 | gfc_component *c; | |
524af0d6 | 1531 | bool t = true; |
6de9cd9a | 1532 | |
619dd721 | 1533 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1534 | constructing, it must have the pointer attribute. */ |
619dd721 | 1535 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1536 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1537 | && current_attr.pointer == 0) |
1538 | { | |
1539 | gfc_error ("Component at %C must have the POINTER attribute"); | |
524af0d6 | 1540 | return false; |
6de9cd9a DN |
1541 | } |
1542 | ||
636dff67 | 1543 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1544 | { |
1545 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1546 | { | |
1547 | gfc_error ("Array component of structure at %C must have explicit " | |
1548 | "or deferred shape"); | |
524af0d6 | 1549 | return false; |
6de9cd9a DN |
1550 | } |
1551 | } | |
1552 | ||
524af0d6 JB |
1553 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1554 | return false; | |
6de9cd9a DN |
1555 | |
1556 | c->ts = current_ts; | |
bc21d315 JW |
1557 | if (c->ts.type == BT_CHARACTER) |
1558 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1559 | c->attr = current_attr; |
6de9cd9a DN |
1560 | |
1561 | c->initializer = *init; | |
1562 | *init = NULL; | |
1563 | ||
1564 | c->as = *as; | |
1565 | if (c->as != NULL) | |
be59db2d TB |
1566 | { |
1567 | if (c->as->corank) | |
1568 | c->attr.codimension = 1; | |
1569 | if (c->as->rank) | |
1570 | c->attr.dimension = 1; | |
1571 | } | |
6de9cd9a DN |
1572 | *as = NULL; |
1573 | ||
28d08315 PT |
1574 | /* Should this ever get more complicated, combine with similar section |
1575 | in add_init_expr_to_sym into a separate function. */ | |
f4347334 ZG |
1576 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1577 | && c->ts.u.cl | |
bc21d315 | 1578 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
28d08315 | 1579 | { |
d2848082 DK |
1580 | int len; |
1581 | ||
bc21d315 JW |
1582 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1583 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1584 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1585 | |
bc21d315 | 1586 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1587 | |
1588 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1589 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1590 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1591 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1592 | { |
b7e75771 JD |
1593 | gfc_constructor *ctor; |
1594 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1595 | |
2f4d1994 | 1596 | if (ctor) |
d2848082 | 1597 | { |
2f4d1994 | 1598 | int first_len; |
b7e75771 JD |
1599 | bool has_ts = (c->initializer->ts.u.cl |
1600 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1601 | |
1602 | /* Remember the length of the first element for checking | |
1603 | that all elements *in the constructor* have the same | |
1604 | length. This need not be the length of the LHS! */ | |
1605 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1606 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1607 | first_len = ctor->expr->value.character.length; | |
1608 | ||
b7e75771 JD |
1609 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1610 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1611 | { |
b7e75771 JD |
1612 | gfc_set_constant_character_len (len, ctor->expr, |
1613 | has_ts ? -1 : first_len); | |
1614 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1615 | } |
d2848082 | 1616 | } |
28d08315 PT |
1617 | } |
1618 | } | |
1619 | ||
6de9cd9a | 1620 | /* Check array components. */ |
d4b7d0f0 | 1621 | if (!c->attr.dimension) |
2e23972e | 1622 | goto scalar; |
6de9cd9a | 1623 | |
d4b7d0f0 | 1624 | if (c->attr.pointer) |
6de9cd9a DN |
1625 | { |
1626 | if (c->as->type != AS_DEFERRED) | |
1627 | { | |
5046aff5 PT |
1628 | gfc_error ("Pointer array component of structure at %C must have a " |
1629 | "deferred shape"); | |
524af0d6 | 1630 | t = false; |
5046aff5 PT |
1631 | } |
1632 | } | |
d4b7d0f0 | 1633 | else if (c->attr.allocatable) |
5046aff5 PT |
1634 | { |
1635 | if (c->as->type != AS_DEFERRED) | |
1636 | { | |
1637 | gfc_error ("Allocatable component of structure at %C must have a " | |
1638 | "deferred shape"); | |
524af0d6 | 1639 | t = false; |
6de9cd9a DN |
1640 | } |
1641 | } | |
1642 | else | |
1643 | { | |
1644 | if (c->as->type != AS_EXPLICIT) | |
1645 | { | |
636dff67 SK |
1646 | gfc_error ("Array component of structure at %C must have an " |
1647 | "explicit shape"); | |
524af0d6 | 1648 | t = false; |
6de9cd9a DN |
1649 | } |
1650 | } | |
1651 | ||
2e23972e JW |
1652 | scalar: |
1653 | if (c->ts.type == BT_CLASS) | |
17643884 | 1654 | { |
9b6da3c7 | 1655 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 1656 | |
524af0d6 | 1657 | if (t) |
ea59b186 | 1658 | t = t2; |
17643884 JW |
1659 | } |
1660 | ||
2e23972e | 1661 | return t; |
6de9cd9a DN |
1662 | } |
1663 | ||
1664 | ||
1665 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1666 | ||
1667 | match | |
636dff67 | 1668 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1669 | { |
1670 | gfc_symbol *sym; | |
576f6da6 | 1671 | match m, m2 = MATCH_NO; |
6de9cd9a | 1672 | |
576f6da6 TB |
1673 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1674 | return MATCH_ERROR; | |
1675 | ||
1676 | if (m == MATCH_NO) | |
1677 | { | |
1678 | locus old_loc; | |
1679 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1680 | ||
94241120 | 1681 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
1682 | return m2; |
1683 | ||
1684 | old_loc = gfc_current_locus; | |
1685 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1686 | return MATCH_ERROR; | |
1687 | if (m2 != MATCH_YES | |
1688 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1689 | return MATCH_ERROR; | |
1690 | if (m2 == MATCH_NO) | |
1691 | { | |
1692 | gfc_current_locus = old_loc; | |
1693 | return MATCH_NO; | |
1694 | } | |
1695 | } | |
6de9cd9a DN |
1696 | |
1697 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1698 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1699 | { | |
1700 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1701 | return MATCH_ERROR; | |
1702 | } | |
1703 | ||
1704 | gfc_intrinsic_symbol (sym); | |
1705 | ||
1706 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 1707 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
1708 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1709 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
1710 | return MATCH_ERROR; |
1711 | ||
b7e75771 | 1712 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 1713 | |
576f6da6 TB |
1714 | /* Invalid per F2008, C512. */ |
1715 | if (m2 == MATCH_YES) | |
1716 | { | |
1717 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1718 | return MATCH_ERROR; | |
1719 | } | |
1720 | ||
6de9cd9a DN |
1721 | return MATCH_YES; |
1722 | } | |
1723 | ||
1724 | ||
80f95228 JW |
1725 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1726 | ||
1727 | static match | |
1728 | match_pointer_init (gfc_expr **init, int procptr) | |
1729 | { | |
1730 | match m; | |
1731 | ||
1732 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1733 | { | |
1734 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1735 | "a PURE procedure"); | |
1736 | return MATCH_ERROR; | |
1737 | } | |
ccd7751b | 1738 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 1739 | |
eea58adb | 1740 | /* Match NULL() initialization. */ |
80f95228 JW |
1741 | m = gfc_match_null (init); |
1742 | if (m != MATCH_NO) | |
1743 | return m; | |
1744 | ||
1745 | /* Match non-NULL initialization. */ | |
837c4b78 | 1746 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1747 | gfc_matching_procptr_assignment = procptr; |
1748 | m = gfc_match_rvalue (init); | |
837c4b78 | 1749 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1750 | gfc_matching_procptr_assignment = 0; |
1751 | if (m == MATCH_ERROR) | |
1752 | return MATCH_ERROR; | |
1753 | else if (m == MATCH_NO) | |
1754 | { | |
1755 | gfc_error ("Error in pointer initialization at %C"); | |
1756 | return MATCH_ERROR; | |
1757 | } | |
1758 | ||
1759 | if (!procptr) | |
1760 | gfc_resolve_expr (*init); | |
f5acf0f2 | 1761 | |
524af0d6 JB |
1762 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1763 | "initialization at %C")) | |
80f95228 JW |
1764 | return MATCH_ERROR; |
1765 | ||
1766 | return MATCH_YES; | |
1767 | } | |
1768 | ||
1769 | ||
524af0d6 | 1770 | static bool |
bb9de0c4 JW |
1771 | check_function_name (char *name) |
1772 | { | |
1773 | /* In functions that have a RESULT variable defined, the function name always | |
1774 | refers to function calls. Therefore, the name is not allowed to appear in | |
1775 | specification statements. When checking this, be careful about | |
1776 | 'hidden' procedure pointer results ('ppr@'). */ | |
1777 | ||
1778 | if (gfc_current_state () == COMP_FUNCTION) | |
1779 | { | |
1780 | gfc_symbol *block = gfc_current_block (); | |
1781 | if (block && block->result && block->result != block | |
1782 | && strcmp (block->result->name, "ppr@") != 0 | |
1783 | && strcmp (block->name, name) == 0) | |
1784 | { | |
1785 | gfc_error ("Function name '%s' not allowed at %C", name); | |
524af0d6 | 1786 | return false; |
bb9de0c4 JW |
1787 | } |
1788 | } | |
1789 | ||
524af0d6 | 1790 | return true; |
bb9de0c4 JW |
1791 | } |
1792 | ||
1793 | ||
6de9cd9a DN |
1794 | /* Match a variable name with an optional initializer. When this |
1795 | subroutine is called, a variable is expected to be parsed next. | |
1796 | Depending on what is happening at the moment, updates either the | |
1797 | symbol table or the current interface. */ | |
1798 | ||
1799 | static match | |
949d5b72 | 1800 | variable_decl (int elem) |
6de9cd9a DN |
1801 | { |
1802 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1803 | gfc_expr *initializer, *char_len; | |
1804 | gfc_array_spec *as; | |
83d890b9 | 1805 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1806 | gfc_charlen *cl; |
e69afb29 | 1807 | bool cl_deferred; |
6de9cd9a DN |
1808 | locus var_locus; |
1809 | match m; | |
524af0d6 | 1810 | bool t; |
83d890b9 | 1811 | gfc_symbol *sym; |
6de9cd9a DN |
1812 | |
1813 | initializer = NULL; | |
1814 | as = NULL; | |
83d890b9 | 1815 | cp_as = NULL; |
6de9cd9a DN |
1816 | |
1817 | /* When we get here, we've just matched a list of attributes and | |
1818 | maybe a type and a double colon. The next thing we expect to see | |
1819 | is the name of the symbol. */ | |
1820 | m = gfc_match_name (name); | |
1821 | if (m != MATCH_YES) | |
1822 | goto cleanup; | |
1823 | ||
63645982 | 1824 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1825 | |
1826 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1827 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1828 | if (m == MATCH_ERROR) |
6de9cd9a | 1829 | goto cleanup; |
25d8f0a2 | 1830 | |
6de9cd9a DN |
1831 | if (m == MATCH_NO) |
1832 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 1833 | else if (current_as |
524af0d6 | 1834 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
1835 | { |
1836 | m = MATCH_ERROR; | |
1837 | goto cleanup; | |
1838 | } | |
6de9cd9a | 1839 | |
11126dc0 AL |
1840 | if (gfc_option.flag_cray_pointer) |
1841 | cp_as = gfc_copy_array_spec (as); | |
1842 | ||
f5ca06e6 DK |
1843 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1844 | determine (and check) whether it can be implied-shape. If it | |
1845 | was parsed as assumed-size, change it because PARAMETERs can not | |
1846 | be assumed-size. */ | |
1847 | if (as) | |
1848 | { | |
1849 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1850 | { | |
1851 | m = MATCH_ERROR; | |
1852 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1853 | name, &var_locus); | |
1854 | goto cleanup; | |
1855 | } | |
1856 | ||
1857 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1858 | && current_attr.flavor == FL_PARAMETER) | |
1859 | as->type = AS_IMPLIED_SHAPE; | |
1860 | ||
1861 | if (as->type == AS_IMPLIED_SHAPE | |
524af0d6 JB |
1862 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1863 | &var_locus)) | |
f5ca06e6 DK |
1864 | { |
1865 | m = MATCH_ERROR; | |
1866 | goto cleanup; | |
1867 | } | |
1868 | } | |
1869 | ||
6de9cd9a DN |
1870 | char_len = NULL; |
1871 | cl = NULL; | |
e69afb29 | 1872 | cl_deferred = false; |
6de9cd9a DN |
1873 | |
1874 | if (current_ts.type == BT_CHARACTER) | |
1875 | { | |
2767f2cc | 1876 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
1877 | { |
1878 | case MATCH_YES: | |
b76e28c6 | 1879 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1880 | |
1881 | cl->length = char_len; | |
1882 | break; | |
1883 | ||
949d5b72 | 1884 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1885 | element. Also copy assumed lengths. */ |
6de9cd9a | 1886 | case MATCH_NO: |
9b21a380 | 1887 | if (elem > 1 |
bc21d315 JW |
1888 | && (current_ts.u.cl->length == NULL |
1889 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1890 | { |
b76e28c6 | 1891 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1892 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1893 | } |
1894 | else | |
bc21d315 | 1895 | cl = current_ts.u.cl; |
949d5b72 | 1896 | |
e69afb29 SK |
1897 | cl_deferred = current_ts.deferred; |
1898 | ||
6de9cd9a DN |
1899 | break; |
1900 | ||
1901 | case MATCH_ERROR: | |
1902 | goto cleanup; | |
1903 | } | |
1904 | } | |
1905 | ||
83d890b9 | 1906 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1907 | then we want to set the type & bail out. */ |
83d890b9 AL |
1908 | if (gfc_option.flag_cray_pointer) |
1909 | { | |
1910 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1911 | if (sym != NULL && sym->attr.cray_pointee) | |
1912 | { | |
1913 | sym->ts.type = current_ts.type; | |
1914 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
1915 | sym->ts.u.cl = cl; |
1916 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
1917 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1918 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 1919 | m = MATCH_YES; |
f5acf0f2 | 1920 | |
83d890b9 AL |
1921 | /* Check to see if we have an array specification. */ |
1922 | if (cp_as != NULL) | |
1923 | { | |
1924 | if (sym->as != NULL) | |
1925 | { | |
e25a0da3 | 1926 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1927 | gfc_free_array_spec (cp_as); |
1928 | m = MATCH_ERROR; | |
1929 | goto cleanup; | |
1930 | } | |
1931 | else | |
1932 | { | |
524af0d6 | 1933 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 1934 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 1935 | |
83d890b9 | 1936 | /* Fix the array spec. */ |
d51347f9 | 1937 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1938 | if (m == MATCH_ERROR) |
1939 | goto cleanup; | |
1940 | } | |
d51347f9 | 1941 | } |
83d890b9 AL |
1942 | goto cleanup; |
1943 | } | |
1944 | else | |
1945 | { | |
1946 | gfc_free_array_spec (cp_as); | |
1947 | } | |
1948 | } | |
d51347f9 | 1949 | |
3070bab4 JW |
1950 | /* Procedure pointer as function result. */ |
1951 | if (gfc_current_state () == COMP_FUNCTION | |
1952 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1953 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1954 | strcpy (name, "ppr@"); | |
1955 | ||
1956 | if (gfc_current_state () == COMP_FUNCTION | |
1957 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1958 | && gfc_current_block ()->result | |
1959 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1960 | strcpy (name, "ppr@"); | |
d51347f9 | 1961 | |
6de9cd9a DN |
1962 | /* OK, we've successfully matched the declaration. Now put the |
1963 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1964 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1965 | perfectly legal: |
1966 | ||
1967 | integer, parameter :: i = huge(i) | |
1968 | ||
1969 | This is only true for parameters or variables of a basic type. | |
1970 | For components of derived types, it is not true, so we don't | |
1971 | create a symbol for those yet. If we fail to create the symbol, | |
1972 | bail out. */ | |
1973 | if (gfc_current_state () != COMP_DERIVED | |
524af0d6 | 1974 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 1975 | { |
72af9f0b PT |
1976 | m = MATCH_ERROR; |
1977 | goto cleanup; | |
1978 | } | |
1979 | ||
524af0d6 | 1980 | if (!check_function_name (name)) |
6de9cd9a | 1981 | { |
6de9cd9a DN |
1982 | m = MATCH_ERROR; |
1983 | goto cleanup; | |
1984 | } | |
1985 | ||
294fbfc8 TS |
1986 | /* We allow old-style initializations of the form |
1987 | integer i /2/, j(4) /3*3, 1/ | |
1988 | (if no colon has been seen). These are different from data | |
1989 | statements in that initializers are only allowed to apply to the | |
1990 | variable immediately preceding, i.e. | |
1991 | integer i, j /1, 2/ | |
1992 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1993 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
1994 | |
1995 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1996 | { | |
524af0d6 JB |
1997 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
1998 | "initialization at %C")) | |
294fbfc8 | 1999 | return MATCH_ERROR; |
b18f1efc JJ |
2000 | else if (gfc_current_state () == COMP_DERIVED) |
2001 | { | |
2002 | gfc_error ("Invalid old style initialization for derived type " | |
2003 | "component at %C"); | |
2004 | m = MATCH_ERROR; | |
2005 | goto cleanup; | |
2006 | } | |
f5acf0f2 | 2007 | |
294fbfc8 TS |
2008 | return match_old_style_init (name); |
2009 | } | |
2010 | ||
6de9cd9a DN |
2011 | /* The double colon must be present in order to have initializers. |
2012 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2013 | if (colon_seen) | |
2014 | { | |
2015 | if (gfc_match (" =>") == MATCH_YES) | |
2016 | { | |
6de9cd9a DN |
2017 | if (!current_attr.pointer) |
2018 | { | |
2019 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2020 | m = MATCH_ERROR; | |
2021 | goto cleanup; | |
2022 | } | |
2023 | ||
80f95228 | 2024 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2025 | if (m != MATCH_YES) |
2026 | goto cleanup; | |
6de9cd9a DN |
2027 | } |
2028 | else if (gfc_match_char ('=') == MATCH_YES) | |
2029 | { | |
2030 | if (current_attr.pointer) | |
2031 | { | |
636dff67 SK |
2032 | gfc_error ("Pointer initialization at %C requires '=>', " |
2033 | "not '='"); | |
6de9cd9a DN |
2034 | m = MATCH_ERROR; |
2035 | goto cleanup; | |
2036 | } | |
2037 | ||
2038 | m = gfc_match_init_expr (&initializer); | |
2039 | if (m == MATCH_NO) | |
2040 | { | |
2041 | gfc_error ("Expected an initialization expression at %C"); | |
2042 | m = MATCH_ERROR; | |
2043 | } | |
2044 | ||
ade20620 TB |
2045 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2046 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2047 | { |
636dff67 SK |
2048 | gfc_error ("Initialization of variable at %C is not allowed in " |
2049 | "a PURE procedure"); | |
6de9cd9a DN |
2050 | m = MATCH_ERROR; |
2051 | } | |
2052 | ||
ccd7751b TB |
2053 | if (current_attr.flavor != FL_PARAMETER |
2054 | && gfc_state_stack->state != COMP_DERIVED) | |
2055 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); | |
2056 | ||
6de9cd9a DN |
2057 | if (m != MATCH_YES) |
2058 | goto cleanup; | |
2059 | } | |
cb44ab82 VL |
2060 | } |
2061 | ||
5046aff5 PT |
2062 | if (initializer != NULL && current_attr.allocatable |
2063 | && gfc_current_state () == COMP_DERIVED) | |
2064 | { | |
636dff67 SK |
2065 | gfc_error ("Initialization of allocatable component at %C is not " |
2066 | "allowed"); | |
5046aff5 PT |
2067 | m = MATCH_ERROR; |
2068 | goto cleanup; | |
2069 | } | |
2070 | ||
54b4ba60 | 2071 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2072 | NULL here, because we sometimes also need to check if a |
2073 | declaration *must* have an initialization expression. */ | |
2074 | if (gfc_current_state () != COMP_DERIVED) | |
2075 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2076 | else | |
54b4ba60 | 2077 | { |
5046aff5 | 2078 | if (current_ts.type == BT_DERIVED |
636dff67 | 2079 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2080 | initializer = gfc_default_initializer (¤t_ts); |
2081 | t = build_struct (name, cl, &initializer, &as); | |
2082 | } | |
6de9cd9a | 2083 | |
524af0d6 | 2084 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2085 | |
2086 | cleanup: | |
2087 | /* Free stuff up and return. */ | |
2088 | gfc_free_expr (initializer); | |
2089 | gfc_free_array_spec (as); | |
2090 | ||
2091 | return m; | |
2092 | } | |
2093 | ||
2094 | ||
b2b81a3f BM |
2095 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2096 | This assumes that the byte size is equal to the kind number for | |
2097 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2098 | |
2099 | match | |
636dff67 | 2100 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2101 | { |
2102 | match m; | |
5cf54585 | 2103 | int original_kind; |
6de9cd9a DN |
2104 | |
2105 | if (gfc_match_char ('*') != MATCH_YES) | |
2106 | return MATCH_NO; | |
2107 | ||
5cf54585 | 2108 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2109 | if (m != MATCH_YES) |
2110 | return MATCH_ERROR; | |
2111 | ||
e45b3c75 ES |
2112 | original_kind = ts->kind; |
2113 | ||
6de9cd9a | 2114 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2115 | if (ts->type == BT_COMPLEX) |
2116 | { | |
2117 | if (ts->kind % 2) | |
636dff67 SK |
2118 | { |
2119 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2120 | gfc_basic_typename (ts->type), original_kind); | |
2121 | return MATCH_ERROR; | |
2122 | } | |
e45b3c75 | 2123 | ts->kind /= 2; |
f4347334 ZG |
2124 | |
2125 | } | |
2126 | ||
2127 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2128 | ts->kind = 8; | |
2129 | ||
2130 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2131 | { | |
2132 | if (ts->kind == 4) | |
2133 | { | |
2134 | if (gfc_option.flag_real4_kind == 8) | |
2135 | ts->kind = 8; | |
2136 | if (gfc_option.flag_real4_kind == 10) | |
2137 | ts->kind = 10; | |
2138 | if (gfc_option.flag_real4_kind == 16) | |
2139 | ts->kind = 16; | |
2140 | } | |
2141 | ||
2142 | if (ts->kind == 8) | |
2143 | { | |
2144 | if (gfc_option.flag_real8_kind == 4) | |
2145 | ts->kind = 4; | |
2146 | if (gfc_option.flag_real8_kind == 10) | |
2147 | ts->kind = 10; | |
2148 | if (gfc_option.flag_real8_kind == 16) | |
2149 | ts->kind = 16; | |
2150 | } | |
e45b3c75 | 2151 | } |
6de9cd9a | 2152 | |
e7a2d5fb | 2153 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2154 | { |
e45b3c75 | 2155 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2156 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2157 | return MATCH_ERROR; |
2158 | } | |
2159 | ||
524af0d6 JB |
2160 | if (!gfc_notify_std (GFC_STD_GNU, |
2161 | "Nonstandard type declaration %s*%d at %C", | |
2162 | gfc_basic_typename(ts->type), original_kind)) | |
df8652dc SK |
2163 | return MATCH_ERROR; |
2164 | ||
6de9cd9a DN |
2165 | return MATCH_YES; |
2166 | } | |
2167 | ||
2168 | ||
2169 | /* Match a kind specification. Since kinds are generally optional, we | |
2170 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2171 | string is found, then we know we have an error. */ | |
2172 | ||
2173 | match | |
e2d29968 | 2174 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2175 | { |
e2d29968 | 2176 | locus where, loc; |
6de9cd9a DN |
2177 | gfc_expr *e; |
2178 | match m, n; | |
96ee3a4a | 2179 | char c; |
6de9cd9a DN |
2180 | const char *msg; |
2181 | ||
2182 | m = MATCH_NO; | |
e2d29968 | 2183 | n = MATCH_YES; |
6de9cd9a DN |
2184 | e = NULL; |
2185 | ||
e2d29968 PT |
2186 | where = loc = gfc_current_locus; |
2187 | ||
2188 | if (kind_expr_only) | |
2189 | goto kind_expr; | |
6de9cd9a DN |
2190 | |
2191 | if (gfc_match_char ('(') == MATCH_NO) | |
2192 | return MATCH_NO; | |
2193 | ||
2194 | /* Also gobbles optional text. */ | |
2195 | if (gfc_match (" kind = ") == MATCH_YES) | |
2196 | m = MATCH_ERROR; | |
2197 | ||
e2d29968 PT |
2198 | loc = gfc_current_locus; |
2199 | ||
2200 | kind_expr: | |
6de9cd9a | 2201 | n = gfc_match_init_expr (&e); |
e2d29968 | 2202 | |
6de9cd9a | 2203 | if (n != MATCH_YES) |
e2d29968 | 2204 | { |
1c8bcdf7 | 2205 | if (gfc_matching_function) |
e2d29968 | 2206 | { |
f5acf0f2 | 2207 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2208 | imported parameters and try again after the specification |
2209 | expressions..... */ | |
e2d29968 PT |
2210 | if (gfc_match_char (')') != MATCH_YES) |
2211 | { | |
2212 | gfc_error ("Missing right parenthesis at %C"); | |
2213 | m = MATCH_ERROR; | |
2214 | goto no_match; | |
2215 | } | |
2216 | ||
2217 | gfc_free_expr (e); | |
e2d29968 PT |
2218 | gfc_undo_symbols (); |
2219 | return MATCH_YES; | |
2220 | } | |
2221 | else | |
2222 | { | |
2223 | /* ....or else, the match is real. */ | |
2224 | if (n == MATCH_NO) | |
2225 | gfc_error ("Expected initialization expression at %C"); | |
2226 | if (n != MATCH_YES) | |
2227 | return MATCH_ERROR; | |
2228 | } | |
2229 | } | |
6de9cd9a DN |
2230 | |
2231 | if (e->rank != 0) | |
2232 | { | |
2233 | gfc_error ("Expected scalar initialization expression at %C"); | |
2234 | m = MATCH_ERROR; | |
2235 | goto no_match; | |
2236 | } | |
2237 | ||
2238 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2239 | |
6de9cd9a DN |
2240 | if (msg != NULL) |
2241 | { | |
2242 | gfc_error (msg); | |
2243 | m = MATCH_ERROR; | |
2244 | goto no_match; | |
2245 | } | |
2246 | ||
a8b3b0b6 CR |
2247 | /* Before throwing away the expression, let's see if we had a |
2248 | C interoperable kind (and store the fact). */ | |
2249 | if (e->ts.is_c_interop == 1) | |
2250 | { | |
eea58adb | 2251 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2252 | of the named constants from iso_c_binding. */ |
2253 | ts->is_c_interop = e->ts.is_iso_c; | |
2254 | ts->f90_type = e->ts.f90_type; | |
2255 | } | |
f5acf0f2 | 2256 | |
6de9cd9a DN |
2257 | gfc_free_expr (e); |
2258 | e = NULL; | |
2259 | ||
a8b3b0b6 CR |
2260 | /* Ignore errors to this point, if we've gotten here. This means |
2261 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2262 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2263 | { |
2264 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2265 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2266 | gfc_current_locus = where; |
2267 | return MATCH_ERROR; | |
6de9cd9a | 2268 | } |
96ee3a4a | 2269 | |
2ec855f1 TB |
2270 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2271 | if, e.g., c_double is used for COMPLEX as the standard | |
2272 | explicitly says that the kind type parameter for complex and real | |
2273 | variable is the same, i.e. c_float == c_float_complex. */ | |
2274 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2275 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2276 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
2be51762 TB |
2277 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2278 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2279 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2280 | |
96ee3a4a | 2281 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2282 | if ((c = gfc_next_ascii_char ()) != ')' |
2283 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2284 | { |
96ee3a4a TB |
2285 | if (ts->type == BT_CHARACTER) |
2286 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2287 | else | |
2288 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2289 | m = MATCH_ERROR; |
6de9cd9a | 2290 | } |
a8b3b0b6 CR |
2291 | else |
2292 | /* All tests passed. */ | |
2293 | m = MATCH_YES; | |
6de9cd9a | 2294 | |
a8b3b0b6 CR |
2295 | if(m == MATCH_ERROR) |
2296 | gfc_current_locus = where; | |
f4347334 ZG |
2297 | |
2298 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2299 | ts->kind = 8; | |
2300 | ||
2301 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2302 | { | |
2303 | if (ts->kind == 4) | |
2304 | { | |
2305 | if (gfc_option.flag_real4_kind == 8) | |
2306 | ts->kind = 8; | |
2307 | if (gfc_option.flag_real4_kind == 10) | |
2308 | ts->kind = 10; | |
2309 | if (gfc_option.flag_real4_kind == 16) | |
2310 | ts->kind = 16; | |
2311 | } | |
2312 | ||
2313 | if (ts->kind == 8) | |
2314 | { | |
2315 | if (gfc_option.flag_real8_kind == 4) | |
2316 | ts->kind = 4; | |
2317 | if (gfc_option.flag_real8_kind == 10) | |
2318 | ts->kind = 10; | |
2319 | if (gfc_option.flag_real8_kind == 16) | |
2320 | ts->kind = 16; | |
2321 | } | |
2322 | } | |
2323 | ||
a8b3b0b6 CR |
2324 | /* Return what we know from the test(s). */ |
2325 | return m; | |
6de9cd9a DN |
2326 | |
2327 | no_match: | |
2328 | gfc_free_expr (e); | |
63645982 | 2329 | gfc_current_locus = where; |
6de9cd9a DN |
2330 | return m; |
2331 | } | |
2332 | ||
2333 | ||
187de1ed FXC |
2334 | static match |
2335 | match_char_kind (int * kind, int * is_iso_c) | |
2336 | { | |
2337 | locus where; | |
2338 | gfc_expr *e; | |
2339 | match m, n; | |
2340 | const char *msg; | |
2341 | ||
2342 | m = MATCH_NO; | |
2343 | e = NULL; | |
2344 | where = gfc_current_locus; | |
2345 | ||
2346 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2347 | |
1c8bcdf7 | 2348 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2349 | { |
1c8bcdf7 | 2350 | /* The expression might include use-associated or imported |
f5acf0f2 | 2351 | parameters and try again after the specification |
1c8bcdf7 | 2352 | expressions. */ |
96ee3a4a | 2353 | gfc_free_expr (e); |
96ee3a4a TB |
2354 | gfc_undo_symbols (); |
2355 | return MATCH_YES; | |
2356 | } | |
2357 | ||
187de1ed FXC |
2358 | if (n == MATCH_NO) |
2359 | gfc_error ("Expected initialization expression at %C"); | |
2360 | if (n != MATCH_YES) | |
2361 | return MATCH_ERROR; | |
2362 | ||
2363 | if (e->rank != 0) | |
2364 | { | |
2365 | gfc_error ("Expected scalar initialization expression at %C"); | |
2366 | m = MATCH_ERROR; | |
2367 | goto no_match; | |
2368 | } | |
2369 | ||
2370 | msg = gfc_extract_int (e, kind); | |
2371 | *is_iso_c = e->ts.is_iso_c; | |
2372 | if (msg != NULL) | |
2373 | { | |
2374 | gfc_error (msg); | |
2375 | m = MATCH_ERROR; | |
2376 | goto no_match; | |
2377 | } | |
2378 | ||
2379 | gfc_free_expr (e); | |
2380 | ||
2381 | /* Ignore errors to this point, if we've gotten here. This means | |
2382 | we ignore the m=MATCH_ERROR from above. */ | |
2383 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2384 | { | |
2385 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2386 | m = MATCH_ERROR; | |
2387 | } | |
2388 | else | |
2389 | /* All tests passed. */ | |
2390 | m = MATCH_YES; | |
2391 | ||
2392 | if (m == MATCH_ERROR) | |
2393 | gfc_current_locus = where; | |
f5acf0f2 | 2394 | |
187de1ed FXC |
2395 | /* Return what we know from the test(s). */ |
2396 | return m; | |
2397 | ||
2398 | no_match: | |
2399 | gfc_free_expr (e); | |
2400 | gfc_current_locus = where; | |
2401 | return m; | |
2402 | } | |
2403 | ||
8234e5e0 | 2404 | |
6de9cd9a DN |
2405 | /* Match the various kind/length specifications in a CHARACTER |
2406 | declaration. We don't return MATCH_NO. */ | |
2407 | ||
8234e5e0 SK |
2408 | match |
2409 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2410 | { |
187de1ed | 2411 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2412 | gfc_charlen *cl; |
2413 | gfc_expr *len; | |
2414 | match m; | |
e69afb29 | 2415 | bool deferred; |
187de1ed | 2416 | |
6de9cd9a DN |
2417 | len = NULL; |
2418 | seen_length = 0; | |
187de1ed FXC |
2419 | kind = 0; |
2420 | is_iso_c = 0; | |
e69afb29 | 2421 | deferred = false; |
6de9cd9a DN |
2422 | |
2423 | /* Try the old-style specification first. */ | |
2424 | old_char_selector = 0; | |
2425 | ||
2767f2cc | 2426 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2427 | if (m != MATCH_NO) |
2428 | { | |
2429 | if (m == MATCH_YES) | |
2430 | old_char_selector = 1; | |
2431 | seen_length = 1; | |
2432 | goto done; | |
2433 | } | |
2434 | ||
2435 | m = gfc_match_char ('('); | |
2436 | if (m != MATCH_YES) | |
2437 | { | |
a8b3b0b6 | 2438 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2439 | goto done; |
2440 | } | |
2441 | ||
a8b3b0b6 | 2442 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2443 | if (gfc_match (" kind =") == MATCH_YES) |
2444 | { | |
187de1ed | 2445 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2446 | |
6de9cd9a DN |
2447 | if (m == MATCH_ERROR) |
2448 | goto done; | |
2449 | if (m == MATCH_NO) | |
2450 | goto syntax; | |
2451 | ||
2452 | if (gfc_match (" , len =") == MATCH_NO) | |
2453 | goto rparen; | |
2454 | ||
e69afb29 | 2455 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2456 | if (m == MATCH_NO) |
2457 | goto syntax; | |
2458 | if (m == MATCH_ERROR) | |
2459 | goto done; | |
2460 | seen_length = 1; | |
2461 | ||
2462 | goto rparen; | |
2463 | } | |
2464 | ||
66e4ab31 | 2465 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2466 | if (gfc_match (" len =") == MATCH_YES) |
2467 | { | |
e69afb29 | 2468 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2469 | if (m == MATCH_NO) |
2470 | goto syntax; | |
2471 | if (m == MATCH_ERROR) | |
2472 | goto done; | |
2473 | seen_length = 1; | |
2474 | ||
2475 | if (gfc_match_char (')') == MATCH_YES) | |
2476 | goto done; | |
2477 | ||
2478 | if (gfc_match (" , kind =") != MATCH_YES) | |
2479 | goto syntax; | |
2480 | ||
187de1ed FXC |
2481 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2482 | goto done; | |
6de9cd9a DN |
2483 | |
2484 | goto rparen; | |
2485 | } | |
2486 | ||
66e4ab31 | 2487 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2488 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2489 | if (m == MATCH_NO) |
2490 | goto syntax; | |
2491 | if (m == MATCH_ERROR) | |
2492 | goto done; | |
2493 | seen_length = 1; | |
2494 | ||
2495 | m = gfc_match_char (')'); | |
2496 | if (m == MATCH_YES) | |
2497 | goto done; | |
2498 | ||
2499 | if (gfc_match_char (',') != MATCH_YES) | |
2500 | goto syntax; | |
2501 | ||
a8b3b0b6 | 2502 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2503 | |
187de1ed | 2504 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2505 | if (m == MATCH_ERROR) |
2506 | goto done; | |
2507 | if (m == MATCH_NO) | |
2508 | goto syntax; | |
2509 | ||
2510 | rparen: | |
2511 | /* Require a right-paren at this point. */ | |
2512 | m = gfc_match_char (')'); | |
2513 | if (m == MATCH_YES) | |
2514 | goto done; | |
2515 | ||
2516 | syntax: | |
2517 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2518 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2519 | gfc_free_expr (len); |
2520 | return m; | |
6de9cd9a DN |
2521 | |
2522 | done: | |
a99d95a2 PT |
2523 | /* Deal with character functions after USE and IMPORT statements. */ |
2524 | if (gfc_matching_function) | |
1c8bcdf7 | 2525 | { |
a99d95a2 | 2526 | gfc_free_expr (len); |
1c8bcdf7 PT |
2527 | gfc_undo_symbols (); |
2528 | return MATCH_YES; | |
2529 | } | |
2530 | ||
6de9cd9a DN |
2531 | if (m != MATCH_YES) |
2532 | { | |
2533 | gfc_free_expr (len); | |
2534 | return m; | |
2535 | } | |
2536 | ||
2537 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2538 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2539 | |
2540 | if (seen_length == 0) | |
b7e75771 | 2541 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2542 | else |
5cd09fac | 2543 | cl->length = len; |
6de9cd9a | 2544 | |
bc21d315 | 2545 | ts->u.cl = cl; |
187de1ed | 2546 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2547 | ts->deferred = deferred; |
6de9cd9a | 2548 | |
eea58adb | 2549 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2550 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2551 | if (kind != 0) |
eea58adb | 2552 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2553 | of the named constants from iso_c_binding. */ |
2554 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2555 | else if (len != NULL) |
187de1ed FXC |
2556 | /* Here, we might have parsed something such as: character(c_char) |
2557 | In this case, the parsing code above grabs the c_char when | |
2558 | looking for the length (line 1690, roughly). it's the last | |
2559 | testcase for parsing the kind params of a character variable. | |
2560 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2561 | could be an error. |
187de1ed FXC |
2562 | To see if the user used a C interop kind, test the expr |
2563 | of the so called length, and see if it's C interoperable. */ | |
2564 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2565 | |
6de9cd9a DN |
2566 | return MATCH_YES; |
2567 | } | |
2568 | ||
2569 | ||
e74f1cc8 JW |
2570 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2571 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2572 | IMPLICIT statements. |
2573 | ||
d51347f9 | 2574 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2575 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2576 | statement correctly. */ |
2577 | ||
e2d29968 | 2578 | match |
e74f1cc8 | 2579 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2580 | { |
2581 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2582 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2583 | match m; |
8fc541d3 | 2584 | char c; |
0fb56814 | 2585 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2586 | const char *dt_name; |
6de9cd9a | 2587 | |
1c8bcdf7 PT |
2588 | /* A belt and braces check that the typespec is correctly being treated |
2589 | as a deferred characteristic association. */ | |
2590 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2591 | && (gfc_current_block ()->result->ts.kind == -1) |
2592 | && (ts->kind == -1); | |
6de9cd9a | 2593 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2594 | if (seen_deferred_kind) |
2595 | ts->kind = -1; | |
6de9cd9a | 2596 | |
a8b3b0b6 | 2597 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2598 | curr_binding_label = NULL; |
a8b3b0b6 | 2599 | |
5f700e6d AL |
2600 | if (gfc_match (" byte") == MATCH_YES) |
2601 | { | |
524af0d6 | 2602 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2603 | return MATCH_ERROR; |
2604 | ||
2605 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2606 | { | |
2607 | gfc_error ("BYTE type used at %C " | |
2608 | "is not available on the target machine"); | |
2609 | return MATCH_ERROR; | |
2610 | } | |
d51347f9 | 2611 | |
5f700e6d AL |
2612 | ts->type = BT_INTEGER; |
2613 | ts->kind = 1; | |
2614 | return MATCH_YES; | |
2615 | } | |
2616 | ||
0fb56814 | 2617 | |
45a69325 | 2618 | m = gfc_match (" type ("); |
0fb56814 | 2619 | matched_type = (m == MATCH_YES); |
45a69325 TB |
2620 | if (matched_type) |
2621 | { | |
2622 | gfc_gobble_whitespace (); | |
2623 | if (gfc_peek_ascii_char () == '*') | |
2624 | { | |
2625 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2626 | return m; | |
2627 | if (gfc_current_state () == COMP_DERIVED) | |
2628 | { | |
2629 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2630 | return MATCH_ERROR; | |
2631 | } | |
524af0d6 JB |
2632 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2633 | "at %C")) | |
45a69325 TB |
2634 | return MATCH_ERROR; |
2635 | ts->type = BT_ASSUMED; | |
2636 | return MATCH_YES; | |
2637 | } | |
2638 | ||
2639 | m = gfc_match ("%n", name); | |
2640 | matched_type = (m == MATCH_YES); | |
2641 | } | |
2642 | ||
0fb56814 TB |
2643 | if ((matched_type && strcmp ("integer", name) == 0) |
2644 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2645 | { |
2646 | ts->type = BT_INTEGER; | |
9d64df18 | 2647 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2648 | goto get_kind; |
2649 | } | |
2650 | ||
0fb56814 TB |
2651 | if ((matched_type && strcmp ("character", name) == 0) |
2652 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2653 | { |
0fb56814 | 2654 | if (matched_type |
524af0d6 JB |
2655 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2656 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2657 | return MATCH_ERROR; |
2658 | ||
6de9cd9a | 2659 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2660 | if (implicit_flag == 0) |
0fb56814 | 2661 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2662 | else |
0fb56814 TB |
2663 | m = MATCH_YES; |
2664 | ||
2665 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2666 | m = MATCH_ERROR; | |
2667 | ||
2668 | return m; | |
6de9cd9a DN |
2669 | } |
2670 | ||
0fb56814 TB |
2671 | if ((matched_type && strcmp ("real", name) == 0) |
2672 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2673 | { |
2674 | ts->type = BT_REAL; | |
9d64df18 | 2675 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2676 | goto get_kind; |
2677 | } | |
2678 | ||
0fb56814 TB |
2679 | if ((matched_type |
2680 | && (strcmp ("doubleprecision", name) == 0 | |
2681 | || (strcmp ("double", name) == 0 | |
2682 | && gfc_match (" precision") == MATCH_YES))) | |
2683 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2684 | { |
0fb56814 | 2685 | if (matched_type |
524af0d6 JB |
2686 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2687 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2688 | return MATCH_ERROR; |
2689 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2690 | return MATCH_ERROR; | |
2691 | ||
6de9cd9a | 2692 | ts->type = BT_REAL; |
9d64df18 | 2693 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2694 | return MATCH_YES; |
2695 | } | |
2696 | ||
0fb56814 TB |
2697 | if ((matched_type && strcmp ("complex", name) == 0) |
2698 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2699 | { |
2700 | ts->type = BT_COMPLEX; | |
9d64df18 | 2701 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2702 | goto get_kind; |
2703 | } | |
2704 | ||
0fb56814 TB |
2705 | if ((matched_type |
2706 | && (strcmp ("doublecomplex", name) == 0 | |
2707 | || (strcmp ("double", name) == 0 | |
2708 | && gfc_match (" complex") == MATCH_YES))) | |
2709 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2710 | { |
524af0d6 | 2711 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
2712 | return MATCH_ERROR; |
2713 | ||
2714 | if (matched_type | |
524af0d6 JB |
2715 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2716 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2717 | return MATCH_ERROR; |
2718 | ||
2719 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2720 | return MATCH_ERROR; |
2721 | ||
6de9cd9a | 2722 | ts->type = BT_COMPLEX; |
9d64df18 | 2723 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2724 | return MATCH_YES; |
2725 | } | |
2726 | ||
0fb56814 TB |
2727 | if ((matched_type && strcmp ("logical", name) == 0) |
2728 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2729 | { |
2730 | ts->type = BT_LOGICAL; | |
9d64df18 | 2731 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2732 | goto get_kind; |
2733 | } | |
2734 | ||
0fb56814 TB |
2735 | if (matched_type) |
2736 | m = gfc_match_char (')'); | |
2737 | ||
cf2b3c22 TB |
2738 | if (m == MATCH_YES) |
2739 | ts->type = BT_DERIVED; | |
2740 | else | |
727e8544 | 2741 | { |
528622fd JW |
2742 | /* Match CLASS declarations. */ |
2743 | m = gfc_match (" class ( * )"); | |
2744 | if (m == MATCH_ERROR) | |
2745 | return MATCH_ERROR; | |
2746 | else if (m == MATCH_YES) | |
2747 | { | |
8b704316 PT |
2748 | gfc_symbol *upe; |
2749 | gfc_symtree *st; | |
2750 | ts->type = BT_CLASS; | |
f5acf0f2 | 2751 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
2752 | if (upe == NULL) |
2753 | { | |
f5acf0f2 PT |
2754 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2755 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
2756 | st->n.sym = upe; |
2757 | gfc_set_sym_referenced (upe); | |
2758 | upe->refs++; | |
2759 | upe->ts.type = BT_VOID; | |
2760 | upe->attr.unlimited_polymorphic = 1; | |
2761 | /* This is essential to force the construction of | |
2762 | unlimited polymorphic component class containers. */ | |
2763 | upe->attr.zero_comp = 1; | |
524af0d6 JB |
2764 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2765 | &gfc_current_locus)) | |
528622fd JW |
2766 | return MATCH_ERROR; |
2767 | } | |
8b704316 PT |
2768 | else |
2769 | { | |
f5acf0f2 | 2770 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
8b704316 | 2771 | if (st == NULL) |
f5acf0f2 | 2772 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
2773 | st->n.sym = upe; |
2774 | upe->refs++; | |
2775 | } | |
2776 | ts->u.derived = upe; | |
2777 | return m; | |
2778 | } | |
528622fd | 2779 | |
727e8544 JW |
2780 | m = gfc_match (" class ( %n )", name); |
2781 | if (m != MATCH_YES) | |
2782 | return m; | |
cf2b3c22 | 2783 | ts->type = BT_CLASS; |
727e8544 | 2784 | |
524af0d6 | 2785 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 2786 | return MATCH_ERROR; |
727e8544 | 2787 | } |
6de9cd9a | 2788 | |
1c8bcdf7 PT |
2789 | /* Defer association of the derived type until the end of the |
2790 | specification block. However, if the derived type can be | |
f5acf0f2 | 2791 | found, add it to the typespec. */ |
1c8bcdf7 | 2792 | if (gfc_matching_function) |
e2d29968 | 2793 | { |
bc21d315 | 2794 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2795 | if (gfc_current_state () != COMP_INTERFACE |
2796 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2797 | { |
2798 | sym = gfc_find_dt_in_generic (sym); | |
2799 | ts->u.derived = sym; | |
2800 | } | |
e2d29968 PT |
2801 | return MATCH_YES; |
2802 | } | |
2803 | ||
2804 | /* Search for the name but allow the components to be defined later. If | |
2805 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 2806 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 2807 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
2808 | symtree with the all lower-case name contains the associated |
2809 | generic function. */ | |
2810 | dt_name = gfc_get_string ("%c%s", | |
2811 | (char) TOUPPER ((unsigned char) name[0]), | |
2812 | (const char*)&name[1]); | |
1c8bcdf7 | 2813 | sym = NULL; |
c3f34952 TB |
2814 | dt_sym = NULL; |
2815 | if (ts->kind != -1) | |
6de9cd9a | 2816 | { |
c3f34952 TB |
2817 | gfc_get_ha_symbol (name, &sym); |
2818 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2819 | { | |
2820 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2821 | return MATCH_ERROR; | |
2822 | } | |
2823 | if (sym->generic && !dt_sym) | |
2824 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2825 | } |
e2d29968 PT |
2826 | else if (ts->kind == -1) |
2827 | { | |
1c8bcdf7 PT |
2828 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2829 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2830 | gfc_find_symbol (name, NULL, iface, &sym); |
2831 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 2832 | { |
e2d29968 PT |
2833 | gfc_error ("Type name '%s' at %C is ambiguous", name); |
2834 | return MATCH_ERROR; | |
2835 | } | |
c3f34952 TB |
2836 | if (sym && sym->generic && !dt_sym) |
2837 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2838 | |
1c8bcdf7 | 2839 | ts->kind = 0; |
e2d29968 PT |
2840 | if (sym == NULL) |
2841 | return MATCH_NO; | |
2842 | } | |
6de9cd9a | 2843 | |
c3f34952 TB |
2844 | if ((sym->attr.flavor != FL_UNKNOWN |
2845 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2846 | || sym->attr.subroutine) | |
2847 | { | |
2848 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2849 | "entity at %L, which has the same name", name, | |
2850 | &sym->declared_at); | |
2851 | return MATCH_ERROR; | |
2852 | } | |
6de9cd9a | 2853 | |
1c8bcdf7 | 2854 | gfc_set_sym_referenced (sym); |
c3f34952 | 2855 | if (!sym->attr.generic |
524af0d6 | 2856 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2857 | return MATCH_ERROR; |
2858 | ||
2859 | if (!sym->attr.function | |
524af0d6 | 2860 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2861 | return MATCH_ERROR; |
2862 | ||
2863 | if (!dt_sym) | |
2864 | { | |
2865 | gfc_interface *intr, *head; | |
2866 | ||
2867 | /* Use upper case to save the actual derived-type symbol. */ | |
2868 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2869 | dt_sym->name = gfc_get_string (sym->name); | |
2870 | head = sym->generic; | |
2871 | intr = gfc_get_interface (); | |
2872 | intr->sym = dt_sym; | |
2873 | intr->where = gfc_current_locus; | |
2874 | intr->next = head; | |
2875 | sym->generic = intr; | |
2876 | sym->attr.if_source = IFSRC_DECL; | |
2877 | } | |
2878 | ||
2879 | gfc_set_sym_referenced (dt_sym); | |
2880 | ||
2881 | if (dt_sym->attr.flavor != FL_DERIVED | |
524af0d6 | 2882 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
2883 | return MATCH_ERROR; |
2884 | ||
2885 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
2886 | |
2887 | return MATCH_YES; | |
2888 | ||
2889 | get_kind: | |
0fb56814 | 2890 | if (matched_type |
524af0d6 JB |
2891 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2892 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2893 | return MATCH_ERROR; |
2894 | ||
6de9cd9a DN |
2895 | /* For all types except double, derived and character, look for an |
2896 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2897 | if (implicit_flag == 1) |
0fb56814 TB |
2898 | { |
2899 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2900 | return MATCH_ERROR; | |
2901 | ||
2902 | return MATCH_YES; | |
2903 | } | |
6de9cd9a | 2904 | |
0ff0dfbf TS |
2905 | if (gfc_current_form == FORM_FREE) |
2906 | { | |
0b3624f6 SK |
2907 | c = gfc_peek_ascii_char (); |
2908 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 2909 | && c != ':' && c != ',') |
0fb56814 TB |
2910 | { |
2911 | if (matched_type && c == ')') | |
2912 | { | |
2913 | gfc_next_ascii_char (); | |
2914 | return MATCH_YES; | |
2915 | } | |
2916 | return MATCH_NO; | |
2917 | } | |
0ff0dfbf TS |
2918 | } |
2919 | ||
e2d29968 | 2920 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a DN |
2921 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2922 | m = gfc_match_old_kind_spec (ts); | |
2923 | ||
0fb56814 TB |
2924 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2925 | return MATCH_ERROR; | |
2926 | ||
1c8bcdf7 PT |
2927 | /* Defer association of the KIND expression of function results |
2928 | until after USE and IMPORT statements. */ | |
2929 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2930 | || gfc_matching_function) | |
2931 | return MATCH_YES; | |
2932 | ||
6de9cd9a DN |
2933 | if (m == MATCH_NO) |
2934 | m = MATCH_YES; /* No kind specifier found. */ | |
2935 | ||
2936 | return m; | |
2937 | } | |
2938 | ||
2939 | ||
e5ddaa24 TS |
2940 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2941 | already matched in parse.c, or we would not end up here in the | |
2942 | first place. So the only thing we need to check, is if there is | |
2943 | trailing garbage. If not, the match is successful. */ | |
2944 | ||
2945 | match | |
2946 | gfc_match_implicit_none (void) | |
2947 | { | |
e5ddaa24 TS |
2948 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2949 | } | |
2950 | ||
2951 | ||
2952 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2953 | ||
2954 | static match | |
1107b970 | 2955 | match_implicit_range (void) |
e5ddaa24 | 2956 | { |
8fc541d3 FXC |
2957 | char c, c1, c2; |
2958 | int inner; | |
e5ddaa24 TS |
2959 | locus cur_loc; |
2960 | ||
2961 | cur_loc = gfc_current_locus; | |
2962 | ||
2963 | gfc_gobble_whitespace (); | |
8fc541d3 | 2964 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2965 | if (c != '(') |
2966 | { | |
2967 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2968 | goto bad; | |
2969 | } | |
2970 | ||
2971 | inner = 1; | |
2972 | while (inner) | |
2973 | { | |
2974 | gfc_gobble_whitespace (); | |
8fc541d3 | 2975 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2976 | if (!ISALPHA (c1)) |
2977 | goto bad; | |
2978 | ||
2979 | gfc_gobble_whitespace (); | |
8fc541d3 | 2980 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2981 | |
2982 | switch (c) | |
2983 | { | |
2984 | case ')': | |
66e4ab31 | 2985 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2986 | |
2987 | case ',': | |
2988 | c2 = c1; | |
2989 | break; | |
2990 | ||
2991 | case '-': | |
2992 | gfc_gobble_whitespace (); | |
8fc541d3 | 2993 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2994 | if (!ISALPHA (c2)) |
2995 | goto bad; | |
2996 | ||
2997 | gfc_gobble_whitespace (); | |
8fc541d3 | 2998 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2999 | |
3000 | if ((c != ',') && (c != ')')) | |
3001 | goto bad; | |
3002 | if (c == ')') | |
3003 | inner = 0; | |
3004 | ||
3005 | break; | |
3006 | ||
3007 | default: | |
3008 | goto bad; | |
3009 | } | |
3010 | ||
3011 | if (c1 > c2) | |
3012 | { | |
3013 | gfc_error ("Letters must be in alphabetic order in " | |
3014 | "IMPLICIT statement at %C"); | |
3015 | goto bad; | |
3016 | } | |
3017 | ||
3018 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3019 | implicits from this IMPLICIT statement. We do not check for |
3020 | conflicts with whatever earlier IMPLICIT statements may have | |
3021 | set. This is done when we've successfully finished matching | |
3022 | the current one. */ | |
524af0d6 | 3023 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3024 | goto bad; |
3025 | } | |
3026 | ||
3027 | return MATCH_YES; | |
3028 | ||
3029 | bad: | |
3030 | gfc_syntax_error (ST_IMPLICIT); | |
3031 | ||
3032 | gfc_current_locus = cur_loc; | |
3033 | return MATCH_ERROR; | |
3034 | } | |
3035 | ||
3036 | ||
3037 | /* Match an IMPLICIT statement, storing the types for | |
3038 | gfc_set_implicit() if the statement is accepted by the parser. | |
3039 | There is a strange looking, but legal syntactic construction | |
3040 | possible. It looks like: | |
3041 | ||
3042 | IMPLICIT INTEGER (a-b) (c-d) | |
3043 | ||
3044 | This is legal if "a-b" is a constant expression that happens to | |
3045 | equal one of the legal kinds for integers. The real problem | |
3046 | happens with an implicit specification that looks like: | |
3047 | ||
3048 | IMPLICIT INTEGER (a-b) | |
3049 | ||
3050 | In this case, a typespec matcher that is "greedy" (as most of the | |
3051 | matchers are) gobbles the character range as a kindspec, leaving | |
3052 | nothing left. We therefore have to go a bit more slowly in the | |
3053 | matching process by inhibiting the kindspec checking during | |
3054 | typespec matching and checking for a kind later. */ | |
3055 | ||
3056 | match | |
3057 | gfc_match_implicit (void) | |
3058 | { | |
3059 | gfc_typespec ts; | |
3060 | locus cur_loc; | |
8fc541d3 | 3061 | char c; |
e5ddaa24 TS |
3062 | match m; |
3063 | ||
44000dbb JD |
3064 | gfc_clear_ts (&ts); |
3065 | ||
e5ddaa24 TS |
3066 | /* We don't allow empty implicit statements. */ |
3067 | if (gfc_match_eos () == MATCH_YES) | |
3068 | { | |
3069 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3070 | return MATCH_ERROR; | |
3071 | } | |
3072 | ||
e5ddaa24 TS |
3073 | do |
3074 | { | |
1107b970 PB |
3075 | /* First cleanup. */ |
3076 | gfc_clear_new_implicit (); | |
3077 | ||
e5ddaa24 | 3078 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3079 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3080 | if (m == MATCH_ERROR) |
3081 | goto error; | |
3082 | if (m == MATCH_NO) | |
3083 | goto syntax; | |
3084 | ||
3085 | cur_loc = gfc_current_locus; | |
1107b970 | 3086 | m = match_implicit_range (); |
e5ddaa24 TS |
3087 | |
3088 | if (m == MATCH_YES) | |
3089 | { | |
1107b970 | 3090 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3091 | gfc_gobble_whitespace (); |
8fc541d3 | 3092 | c = gfc_next_ascii_char (); |
e5ddaa24 | 3093 | if ((c == '\n') || (c == ',')) |
1107b970 PB |
3094 | { |
3095 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3096 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3097 | { |
9d64df18 | 3098 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3099 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3100 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3101 | NULL, 1); | |
1107b970 PB |
3102 | } |
3103 | ||
3104 | /* Record the Successful match. */ | |
524af0d6 | 3105 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 PB |
3106 | return MATCH_ERROR; |
3107 | continue; | |
3108 | } | |
e5ddaa24 TS |
3109 | |
3110 | gfc_current_locus = cur_loc; | |
3111 | } | |
3112 | ||
1107b970 PB |
3113 | /* Discard the (incorrectly) matched range. */ |
3114 | gfc_clear_new_implicit (); | |
3115 | ||
3116 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3117 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3118 | m = gfc_match_char_spec (&ts); |
1107b970 | 3119 | else |
e5ddaa24 | 3120 | { |
e2d29968 | 3121 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3122 | if (m == MATCH_NO) |
1107b970 PB |
3123 | { |
3124 | m = gfc_match_old_kind_spec (&ts); | |
3125 | if (m == MATCH_ERROR) | |
3126 | goto error; | |
3127 | if (m == MATCH_NO) | |
3128 | goto syntax; | |
3129 | } | |
e5ddaa24 | 3130 | } |
1107b970 PB |
3131 | if (m == MATCH_ERROR) |
3132 | goto error; | |
e5ddaa24 | 3133 | |
1107b970 | 3134 | m = match_implicit_range (); |
e5ddaa24 TS |
3135 | if (m == MATCH_ERROR) |
3136 | goto error; | |
3137 | if (m == MATCH_NO) | |
3138 | goto syntax; | |
3139 | ||
3140 | gfc_gobble_whitespace (); | |
8fc541d3 | 3141 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3142 | if ((c != '\n') && (c != ',')) |
3143 | goto syntax; | |
3144 | ||
524af0d6 | 3145 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3146 | return MATCH_ERROR; |
e5ddaa24 TS |
3147 | } |
3148 | while (c == ','); | |
3149 | ||
1107b970 | 3150 | return MATCH_YES; |
e5ddaa24 TS |
3151 | |
3152 | syntax: | |
3153 | gfc_syntax_error (ST_IMPLICIT); | |
3154 | ||
3155 | error: | |
3156 | return MATCH_ERROR; | |
3157 | } | |
3158 | ||
66e4ab31 | 3159 | |
8998be20 TB |
3160 | match |
3161 | gfc_match_import (void) | |
3162 | { | |
3163 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3164 | match m; | |
3165 | gfc_symbol *sym; | |
3166 | gfc_symtree *st; | |
3167 | ||
66e4ab31 SK |
3168 | if (gfc_current_ns->proc_name == NULL |
3169 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3170 | { |
3171 | gfc_error ("IMPORT statement at %C only permitted in " | |
3172 | "an INTERFACE body"); | |
3173 | return MATCH_ERROR; | |
3174 | } | |
3175 | ||
524af0d6 | 3176 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3177 | return MATCH_ERROR; |
3178 | ||
3179 | if (gfc_match_eos () == MATCH_YES) | |
3180 | { | |
3181 | /* All host variables should be imported. */ | |
3182 | gfc_current_ns->has_import_set = 1; | |
3183 | return MATCH_YES; | |
3184 | } | |
3185 | ||
3186 | if (gfc_match (" ::") == MATCH_YES) | |
3187 | { | |
3188 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3189 | { |
3190 | gfc_error ("Expecting list of named entities at %C"); | |
3191 | return MATCH_ERROR; | |
3192 | } | |
8998be20 TB |
3193 | } |
3194 | ||
3195 | for(;;) | |
3196 | { | |
2e8d9212 | 3197 | sym = NULL; |
8998be20 TB |
3198 | m = gfc_match (" %n", name); |
3199 | switch (m) | |
3200 | { | |
3201 | case MATCH_YES: | |
36d3fb4c | 3202 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3203 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
3204 | { |
3205 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3206 | return MATCH_ERROR; | |
3207 | } | |
4e2cf5f5 | 3208 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3209 | && gfc_find_symbol (name, |
3210 | gfc_current_ns->proc_name->ns->parent, | |
3211 | 1, &sym)) | |
636dff67 SK |
3212 | { |
3213 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3214 | return MATCH_ERROR; | |
3215 | } | |
3216 | ||
3217 | if (sym == NULL) | |
3218 | { | |
3219 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3220 | "at %C - does not exist.", name); | |
3221 | return MATCH_ERROR; | |
3222 | } | |
3223 | ||
dd8b9dde | 3224 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 SK |
3225 | { |
3226 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3227 | "at %C.", name); | |
3228 | goto next_item; | |
3229 | } | |
3230 | ||
dd8b9dde | 3231 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3232 | st->n.sym = sym; |
3233 | sym->refs++; | |
5a8af0b4 | 3234 | sym->attr.imported = 1; |
8998be20 | 3235 | |
c3f34952 TB |
3236 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3237 | { | |
3238 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3239 | letter of the name capitalized; the symtree with the all |
c3f34952 TB |
3240 | lower-case name contains the associated generic function. */ |
3241 | st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
3242 | gfc_get_string ("%c%s", | |
dd8b9dde TB |
3243 | (char) TOUPPER ((unsigned char) name[0]), |
3244 | &name[1])); | |
c3f34952 TB |
3245 | st->n.sym = sym; |
3246 | sym->refs++; | |
3247 | sym->attr.imported = 1; | |
3248 | } | |
3249 | ||
8998be20 TB |
3250 | goto next_item; |
3251 | ||
3252 | case MATCH_NO: | |
3253 | break; | |
3254 | ||
3255 | case MATCH_ERROR: | |
3256 | return MATCH_ERROR; | |
3257 | } | |
3258 | ||
3259 | next_item: | |
3260 | if (gfc_match_eos () == MATCH_YES) | |
3261 | break; | |
3262 | if (gfc_match_char (',') != MATCH_YES) | |
3263 | goto syntax; | |
3264 | } | |
3265 | ||
3266 | return MATCH_YES; | |
3267 | ||
3268 | syntax: | |
3269 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3270 | return MATCH_ERROR; | |
3271 | } | |
e5ddaa24 | 3272 | |
66e4ab31 | 3273 | |
f2449db4 RS |
3274 | /* A minimal implementation of gfc_match without whitespace, escape |
3275 | characters or variable arguments. Returns true if the next | |
3276 | characters match the TARGET template exactly. */ | |
3277 | ||
3278 | static bool | |
3279 | match_string_p (const char *target) | |
3280 | { | |
3281 | const char *p; | |
3282 | ||
3283 | for (p = target; *p; p++) | |
8fc541d3 | 3284 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3285 | return false; |
3286 | return true; | |
3287 | } | |
3288 | ||
6de9cd9a DN |
3289 | /* Matches an attribute specification including array specs. If |
3290 | successful, leaves the variables current_attr and current_as | |
3291 | holding the specification. Also sets the colon_seen variable for | |
3292 | later use by matchers associated with initializations. | |
3293 | ||
3294 | This subroutine is a little tricky in the sense that we don't know | |
3295 | if we really have an attr-spec until we hit the double colon. | |
3296 | Until that time, we can only return MATCH_NO. This forces us to | |
3297 | check for duplicate specification at this level. */ | |
3298 | ||
3299 | static match | |
3300 | match_attr_spec (void) | |
3301 | { | |
6de9cd9a | 3302 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3303 | enum |
6de9cd9a DN |
3304 | { GFC_DECL_BEGIN = 0, |
3305 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3306 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3307 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3308 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3309 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3310 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3311 | }; |
6de9cd9a DN |
3312 | |
3313 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3314 | #define NUM_DECL GFC_DECL_END | |
3315 | ||
6de9cd9a DN |
3316 | locus start, seen_at[NUM_DECL]; |
3317 | int seen[NUM_DECL]; | |
09639a83 | 3318 | unsigned int d; |
6de9cd9a DN |
3319 | const char *attr; |
3320 | match m; | |
524af0d6 | 3321 | bool t; |
6de9cd9a DN |
3322 | |
3323 | gfc_clear_attr (¤t_attr); | |
63645982 | 3324 | start = gfc_current_locus; |
6de9cd9a DN |
3325 | |
3326 | current_as = NULL; | |
3327 | colon_seen = 0; | |
3328 | ||
3329 | /* See if we get all of the keywords up to the final double colon. */ | |
3330 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3331 | seen[d] = 0; | |
3332 | ||
3333 | for (;;) | |
3334 | { | |
8fc541d3 | 3335 | char ch; |
a8b3b0b6 | 3336 | |
f2449db4 RS |
3337 | d = DECL_NONE; |
3338 | gfc_gobble_whitespace (); | |
3339 | ||
8fc541d3 | 3340 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3341 | if (ch == ':') |
3342 | { | |
3343 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3344 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3345 | break; |
3346 | } | |
3347 | else if (ch == ',') | |
a8b3b0b6 | 3348 | { |
a8b3b0b6 | 3349 | gfc_gobble_whitespace (); |
8fc541d3 | 3350 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3351 | { |
f2449db4 | 3352 | case 'a': |
1eee5628 TB |
3353 | gfc_next_ascii_char (); |
3354 | switch (gfc_next_ascii_char ()) | |
3355 | { | |
3356 | case 'l': | |
3357 | if (match_string_p ("locatable")) | |
3358 | { | |
3359 | /* Matched "allocatable". */ | |
3360 | d = DECL_ALLOCATABLE; | |
3361 | } | |
3362 | break; | |
3363 | ||
3364 | case 's': | |
3365 | if (match_string_p ("ynchronous")) | |
3366 | { | |
3367 | /* Matched "asynchronous". */ | |
3368 | d = DECL_ASYNCHRONOUS; | |
3369 | } | |
3370 | break; | |
3371 | } | |
fe4e525c | 3372 | break; |
f2449db4 RS |
3373 | |
3374 | case 'b': | |
a8b3b0b6 | 3375 | /* Try and match the bind(c). */ |
1eabf70a | 3376 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3377 | if (m == MATCH_YES) |
a8b3b0b6 | 3378 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3379 | else if (m == MATCH_ERROR) |
3380 | goto cleanup; | |
f2449db4 RS |
3381 | break; |
3382 | ||
be59db2d | 3383 | case 'c': |
fe4e525c TB |
3384 | gfc_next_ascii_char (); |
3385 | if ('o' != gfc_next_ascii_char ()) | |
3386 | break; | |
3387 | switch (gfc_next_ascii_char ()) | |
3388 | { | |
3389 | case 'd': | |
3390 | if (match_string_p ("imension")) | |
3391 | { | |
3392 | d = DECL_CODIMENSION; | |
3393 | break; | |
3394 | } | |
3395 | case 'n': | |
3396 | if (match_string_p ("tiguous")) | |
3397 | { | |
3398 | d = DECL_CONTIGUOUS; | |
3399 | break; | |
3400 | } | |
3401 | } | |
be59db2d TB |
3402 | break; |
3403 | ||
f2449db4 RS |
3404 | case 'd': |
3405 | if (match_string_p ("dimension")) | |
3406 | d = DECL_DIMENSION; | |
3407 | break; | |
3408 | ||
3409 | case 'e': | |
3410 | if (match_string_p ("external")) | |
3411 | d = DECL_EXTERNAL; | |
3412 | break; | |
3413 | ||
3414 | case 'i': | |
3415 | if (match_string_p ("int")) | |
3416 | { | |
8fc541d3 | 3417 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3418 | if (ch == 'e') |
3419 | { | |
3420 | if (match_string_p ("nt")) | |
3421 | { | |
3422 | /* Matched "intent". */ | |
3423 | /* TODO: Call match_intent_spec from here. */ | |
3424 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3425 | d = DECL_INOUT; | |
3426 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3427 | d = DECL_IN; | |
3428 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3429 | d = DECL_OUT; | |
3430 | } | |
3431 | } | |
3432 | else if (ch == 'r') | |
3433 | { | |
3434 | if (match_string_p ("insic")) | |
3435 | { | |
3436 | /* Matched "intrinsic". */ | |
3437 | d = DECL_INTRINSIC; | |
3438 | } | |
3439 | } | |
3440 | } | |
3441 | break; | |
3442 | ||
3443 | case 'o': | |
3444 | if (match_string_p ("optional")) | |
3445 | d = DECL_OPTIONAL; | |
3446 | break; | |
3447 | ||
3448 | case 'p': | |
8fc541d3 FXC |
3449 | gfc_next_ascii_char (); |
3450 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3451 | { |
3452 | case 'a': | |
3453 | if (match_string_p ("rameter")) | |
3454 | { | |
3455 | /* Matched "parameter". */ | |
3456 | d = DECL_PARAMETER; | |
3457 | } | |
3458 | break; | |
3459 | ||
3460 | case 'o': | |
3461 | if (match_string_p ("inter")) | |
3462 | { | |
3463 | /* Matched "pointer". */ | |
3464 | d = DECL_POINTER; | |
3465 | } | |
3466 | break; | |
3467 | ||
3468 | case 'r': | |
8fc541d3 | 3469 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3470 | if (ch == 'i') |
3471 | { | |
3472 | if (match_string_p ("vate")) | |
3473 | { | |
3474 | /* Matched "private". */ | |
3475 | d = DECL_PRIVATE; | |
3476 | } | |
3477 | } | |
3478 | else if (ch == 'o') | |
3479 | { | |
3480 | if (match_string_p ("tected")) | |
3481 | { | |
3482 | /* Matched "protected". */ | |
3483 | d = DECL_PROTECTED; | |
3484 | } | |
3485 | } | |
3486 | break; | |
3487 | ||
3488 | case 'u': | |
3489 | if (match_string_p ("blic")) | |
3490 | { | |
3491 | /* Matched "public". */ | |
3492 | d = DECL_PUBLIC; | |
3493 | } | |
3494 | break; | |
3495 | } | |
3496 | break; | |
3497 | ||
3498 | case 's': | |
3499 | if (match_string_p ("save")) | |
3500 | d = DECL_SAVE; | |
3501 | break; | |
3502 | ||
3503 | case 't': | |
3504 | if (match_string_p ("target")) | |
3505 | d = DECL_TARGET; | |
3506 | break; | |
3507 | ||
3508 | case 'v': | |
8fc541d3 FXC |
3509 | gfc_next_ascii_char (); |
3510 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3511 | if (ch == 'a') |
3512 | { | |
3513 | if (match_string_p ("lue")) | |
3514 | { | |
3515 | /* Matched "value". */ | |
3516 | d = DECL_VALUE; | |
3517 | } | |
3518 | } | |
3519 | else if (ch == 'o') | |
3520 | { | |
3521 | if (match_string_p ("latile")) | |
3522 | { | |
3523 | /* Matched "volatile". */ | |
3524 | d = DECL_VOLATILE; | |
3525 | } | |
3526 | } | |
3527 | break; | |
a8b3b0b6 CR |
3528 | } |
3529 | } | |
d468bcdb | 3530 | |
f2449db4 RS |
3531 | /* No double colon and no recognizable decl_type, so assume that |
3532 | we've been looking at something else the whole time. */ | |
3533 | if (d == DECL_NONE) | |
3534 | { | |
3535 | m = MATCH_NO; | |
3536 | goto cleanup; | |
3537 | } | |
d51347f9 | 3538 | |
acb388a0 JD |
3539 | /* Check to make sure any parens are paired up correctly. */ |
3540 | if (gfc_match_parens () == MATCH_ERROR) | |
3541 | { | |
3542 | m = MATCH_ERROR; | |
3543 | goto cleanup; | |
3544 | } | |
3545 | ||
6de9cd9a | 3546 | seen[d]++; |
63645982 | 3547 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3548 | |
d3a9eea2 | 3549 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3550 | { |
d3a9eea2 | 3551 | gfc_array_spec *as = NULL; |
6de9cd9a | 3552 | |
d3a9eea2 TB |
3553 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3554 | d == DECL_CODIMENSION); | |
3555 | ||
3556 | if (current_as == NULL) | |
3557 | current_as = as; | |
3558 | else if (m == MATCH_YES) | |
6de9cd9a | 3559 | { |
524af0d6 | 3560 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 3561 | m = MATCH_ERROR; |
cede9502 | 3562 | free (as); |
6de9cd9a DN |
3563 | } |
3564 | ||
be59db2d TB |
3565 | if (m == MATCH_NO) |
3566 | { | |
d3a9eea2 TB |
3567 | if (d == DECL_CODIMENSION) |
3568 | gfc_error ("Missing codimension specification at %C"); | |
3569 | else | |
3570 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3571 | m = MATCH_ERROR; |
3572 | } | |
3573 | ||
3574 | if (m == MATCH_ERROR) | |
3575 | goto cleanup; | |
3576 | } | |
6de9cd9a DN |
3577 | } |
3578 | ||
6de9cd9a DN |
3579 | /* Since we've seen a double colon, we have to be looking at an |
3580 | attr-spec. This means that we can now issue errors. */ | |
3581 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3582 | if (seen[d] > 1) | |
3583 | { | |
3584 | switch (d) | |
3585 | { | |
3586 | case DECL_ALLOCATABLE: | |
3587 | attr = "ALLOCATABLE"; | |
3588 | break; | |
1eee5628 TB |
3589 | case DECL_ASYNCHRONOUS: |
3590 | attr = "ASYNCHRONOUS"; | |
3591 | break; | |
be59db2d TB |
3592 | case DECL_CODIMENSION: |
3593 | attr = "CODIMENSION"; | |
3594 | break; | |
fe4e525c TB |
3595 | case DECL_CONTIGUOUS: |
3596 | attr = "CONTIGUOUS"; | |
3597 | break; | |
6de9cd9a DN |
3598 | case DECL_DIMENSION: |
3599 | attr = "DIMENSION"; | |
3600 | break; | |
3601 | case DECL_EXTERNAL: | |
3602 | attr = "EXTERNAL"; | |
3603 | break; | |
3604 | case DECL_IN: | |
3605 | attr = "INTENT (IN)"; | |
3606 | break; | |
3607 | case DECL_OUT: | |
3608 | attr = "INTENT (OUT)"; | |
3609 | break; | |
3610 | case DECL_INOUT: | |
3611 | attr = "INTENT (IN OUT)"; | |
3612 | break; | |
3613 | case DECL_INTRINSIC: | |
3614 | attr = "INTRINSIC"; | |
3615 | break; | |
3616 | case DECL_OPTIONAL: | |
3617 | attr = "OPTIONAL"; | |
3618 | break; | |
3619 | case DECL_PARAMETER: | |
3620 | attr = "PARAMETER"; | |
3621 | break; | |
3622 | case DECL_POINTER: | |
3623 | attr = "POINTER"; | |
3624 | break; | |
ee7e677f TB |
3625 | case DECL_PROTECTED: |
3626 | attr = "PROTECTED"; | |
3627 | break; | |
6de9cd9a DN |
3628 | case DECL_PRIVATE: |
3629 | attr = "PRIVATE"; | |
3630 | break; | |
3631 | case DECL_PUBLIC: | |
3632 | attr = "PUBLIC"; | |
3633 | break; | |
3634 | case DECL_SAVE: | |
3635 | attr = "SAVE"; | |
3636 | break; | |
3637 | case DECL_TARGET: | |
3638 | attr = "TARGET"; | |
3639 | break; | |
a8b3b0b6 CR |
3640 | case DECL_IS_BIND_C: |
3641 | attr = "IS_BIND_C"; | |
3642 | break; | |
3643 | case DECL_VALUE: | |
3644 | attr = "VALUE"; | |
3645 | break; | |
775e6c3a TB |
3646 | case DECL_VOLATILE: |
3647 | attr = "VOLATILE"; | |
3648 | break; | |
6de9cd9a | 3649 | default: |
66e4ab31 | 3650 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3651 | } |
3652 | ||
3653 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3654 | m = MATCH_ERROR; | |
3655 | goto cleanup; | |
3656 | } | |
3657 | ||
3658 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3659 | to the current attribute. */ | |
3660 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3661 | { | |
3662 | if (seen[d] == 0) | |
3663 | continue; | |
3664 | ||
3665 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3666 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3667 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3668 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3669 | { |
5046aff5 PT |
3670 | if (d == DECL_ALLOCATABLE) |
3671 | { | |
524af0d6 JB |
3672 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3673 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
3674 | { |
3675 | m = MATCH_ERROR; | |
3676 | goto cleanup; | |
3677 | } | |
636dff67 SK |
3678 | } |
3679 | else | |
5046aff5 PT |
3680 | { |
3681 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3682 | &seen_at[d]); |
5046aff5 PT |
3683 | m = MATCH_ERROR; |
3684 | goto cleanup; | |
3685 | } | |
6de9cd9a DN |
3686 | } |
3687 | ||
4213f93b | 3688 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3689 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3690 | { |
3691 | if (d == DECL_PRIVATE) | |
3692 | attr = "PRIVATE"; | |
3693 | else | |
3694 | attr = "PUBLIC"; | |
d51347f9 TB |
3695 | if (gfc_current_state () == COMP_DERIVED |
3696 | && gfc_state_stack->previous | |
3697 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3698 | { | |
524af0d6 JB |
3699 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3700 | "at %L in a TYPE definition", attr, | |
3701 | &seen_at[d])) | |
d51347f9 TB |
3702 | { |
3703 | m = MATCH_ERROR; | |
3704 | goto cleanup; | |
3705 | } | |
3706 | } | |
3707 | else | |
3708 | { | |
3709 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3710 | "specification part of a module", attr, &seen_at[d]); | |
3711 | m = MATCH_ERROR; | |
3712 | goto cleanup; | |
3713 | } | |
4213f93b PT |
3714 | } |
3715 | ||
6de9cd9a DN |
3716 | switch (d) |
3717 | { | |
3718 | case DECL_ALLOCATABLE: | |
3719 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3720 | break; | |
3721 | ||
1eee5628 | 3722 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
3723 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3724 | t = false; | |
1eee5628 TB |
3725 | else |
3726 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3727 | break; | |
3728 | ||
be59db2d TB |
3729 | case DECL_CODIMENSION: |
3730 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3731 | break; | |
3732 | ||
fe4e525c | 3733 | case DECL_CONTIGUOUS: |
524af0d6 JB |
3734 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3735 | t = false; | |
fe4e525c TB |
3736 | else |
3737 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3738 | break; | |
3739 | ||
6de9cd9a | 3740 | case DECL_DIMENSION: |
231b2fcc | 3741 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3742 | break; |
3743 | ||
3744 | case DECL_EXTERNAL: | |
3745 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3746 | break; | |
3747 | ||
3748 | case DECL_IN: | |
3749 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3750 | break; | |
3751 | ||
3752 | case DECL_OUT: | |
3753 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3754 | break; | |
3755 | ||
3756 | case DECL_INOUT: | |
3757 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3758 | break; | |
3759 | ||
3760 | case DECL_INTRINSIC: | |
3761 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3762 | break; | |
3763 | ||
3764 | case DECL_OPTIONAL: | |
3765 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3766 | break; | |
3767 | ||
3768 | case DECL_PARAMETER: | |
231b2fcc | 3769 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3770 | break; |
3771 | ||
3772 | case DECL_POINTER: | |
3773 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3774 | break; | |
3775 | ||
ee7e677f TB |
3776 | case DECL_PROTECTED: |
3777 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3778 | { | |
3779 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3780 | "part of a module"); | |
524af0d6 | 3781 | t = false; |
ee7e677f TB |
3782 | break; |
3783 | } | |
3784 | ||
524af0d6 JB |
3785 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
3786 | t = false; | |
ee7e677f TB |
3787 | else |
3788 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3789 | break; | |
3790 | ||
6de9cd9a | 3791 | case DECL_PRIVATE: |
231b2fcc TS |
3792 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3793 | &seen_at[d]); | |
6de9cd9a DN |
3794 | break; |
3795 | ||
3796 | case DECL_PUBLIC: | |
231b2fcc TS |
3797 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3798 | &seen_at[d]); | |
6de9cd9a DN |
3799 | break; |
3800 | ||
3801 | case DECL_SAVE: | |
80f95228 | 3802 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3803 | break; |
3804 | ||
3805 | case DECL_TARGET: | |
3806 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3807 | break; | |
3808 | ||
a8b3b0b6 CR |
3809 | case DECL_IS_BIND_C: |
3810 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3811 | break; | |
f5acf0f2 | 3812 | |
06469efd | 3813 | case DECL_VALUE: |
524af0d6 JB |
3814 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
3815 | t = false; | |
06469efd PT |
3816 | else |
3817 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3818 | break; | |
3819 | ||
775e6c3a | 3820 | case DECL_VOLATILE: |
524af0d6 JB |
3821 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
3822 | t = false; | |
775e6c3a TB |
3823 | else |
3824 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3825 | break; | |
3826 | ||
6de9cd9a DN |
3827 | default: |
3828 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3829 | } | |
3830 | ||
524af0d6 | 3831 | if (!t) |
6de9cd9a DN |
3832 | { |
3833 | m = MATCH_ERROR; | |
3834 | goto cleanup; | |
3835 | } | |
3836 | } | |
3837 | ||
dab2cbf8 JW |
3838 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
3839 | if (gfc_current_state () == COMP_MODULE && !current_attr.save | |
3840 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) | |
80f95228 JW |
3841 | current_attr.save = SAVE_IMPLICIT; |
3842 | ||
6de9cd9a DN |
3843 | colon_seen = 1; |
3844 | return MATCH_YES; | |
3845 | ||
3846 | cleanup: | |
63645982 | 3847 | gfc_current_locus = start; |
6de9cd9a DN |
3848 | gfc_free_array_spec (current_as); |
3849 | current_as = NULL; | |
3850 | return m; | |
3851 | } | |
3852 | ||
3853 | ||
a8b3b0b6 CR |
3854 | /* Set the binding label, dest_label, either with the binding label |
3855 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3856 | will be the symbol name in all lower case, as required by the draft | |
3857 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3858 | there is more than one argument (num_idents), it is an error. */ | |
3859 | ||
524af0d6 | 3860 | static bool |
f5acf0f2 | 3861 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 3862 | int num_idents) |
a8b3b0b6 | 3863 | { |
ad4a2f64 | 3864 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 3865 | { |
ad4a2f64 TB |
3866 | gfc_error ("Multiple identifiers provided with " |
3867 | "single NAME= specifier at %C"); | |
524af0d6 | 3868 | return false; |
ad4a2f64 | 3869 | } |
a8b3b0b6 | 3870 | |
62603fae | 3871 | if (curr_binding_label) |
eea58adb | 3872 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 3873 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
3874 | else |
3875 | { | |
3876 | /* No binding label given, and the NAME= specifier did not exist, | |
3877 | which means there was no NAME="". */ | |
3878 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 3879 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 3880 | } |
f5acf0f2 | 3881 | |
524af0d6 | 3882 | return true; |
a8b3b0b6 CR |
3883 | } |
3884 | ||
3885 | ||
3886 | /* Set the status of the given common block as being BIND(C) or not, | |
3887 | depending on the given parameter, is_bind_c. */ | |
3888 | ||
3889 | void | |
3890 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3891 | { | |
3892 | com_block->is_bind_c = is_bind_c; | |
3893 | return; | |
3894 | } | |
3895 | ||
3896 | ||
3897 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3898 | ||
524af0d6 | 3899 | bool |
00820a2a | 3900 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 3901 | { |
bc21d315 | 3902 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 3903 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 3904 | ? true : false; |
00820a2a | 3905 | else if (ts->type == BT_CLASS) |
524af0d6 | 3906 | return false; |
45a69325 | 3907 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 3908 | return false; |
45a69325 | 3909 | |
524af0d6 | 3910 | return true; |
a8b3b0b6 CR |
3911 | } |
3912 | ||
3913 | ||
3914 | /* Verify that the variables of a given common block, which has been | |
3915 | defined with the attribute specifier bind(c), to be of a C | |
3916 | interoperable type. Errors will be reported here, if | |
3917 | encountered. */ | |
3918 | ||
524af0d6 | 3919 | bool |
a8b3b0b6 CR |
3920 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3921 | { | |
3922 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 3923 | bool retval = true; |
a8b3b0b6 CR |
3924 | |
3925 | curr_sym = com_block->head; | |
f5acf0f2 | 3926 | |
a8b3b0b6 CR |
3927 | /* Make sure we have at least one symbol. */ |
3928 | if (curr_sym == NULL) | |
3929 | return retval; | |
3930 | ||
3931 | /* Here we know we have a symbol, so we'll execute this loop | |
3932 | at least once. */ | |
3933 | do | |
3934 | { | |
3935 | /* The second to last param, 1, says this is in a common block. */ | |
3936 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3937 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 3938 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
3939 | |
3940 | return retval; | |
3941 | } | |
3942 | ||
3943 | ||
3944 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3945 | an appropriate error message is reported. */ | |
3946 | ||
524af0d6 | 3947 | bool |
a8b3b0b6 CR |
3948 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3949 | int is_in_common, gfc_common_head *com_block) | |
3950 | { | |
8327f9c2 | 3951 | bool bind_c_function = false; |
524af0d6 | 3952 | bool retval = true; |
d8fa96e0 | 3953 | |
8327f9c2 TB |
3954 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3955 | bind_c_function = true; | |
3956 | ||
d8fa96e0 CR |
3957 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3958 | { | |
3959 | tmp_sym = tmp_sym->result; | |
3960 | /* Make sure it wasn't an implicitly typed result. */ | |
0e193637 | 3961 | if (tmp_sym->attr.implicit_type && gfc_option.warn_c_binding_type) |
d8fa96e0 CR |
3962 | { |
3963 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3964 | "%L may not be C interoperable", tmp_sym->name, | |
3965 | &tmp_sym->declared_at); | |
3966 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3967 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3968 | tmp_sym->ts.is_c_interop = 1; | |
3969 | tmp_sym->attr.is_c_interop = 1; | |
3970 | } | |
3971 | } | |
8327f9c2 | 3972 | |
a8b3b0b6 CR |
3973 | /* Here, we know we have the bind(c) attribute, so if we have |
3974 | enough type info, then verify that it's a C interop kind. | |
3975 | The info could be in the symbol already, or possibly still in | |
3976 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 3977 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 3978 | { |
524af0d6 | 3979 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
3980 | { |
3981 | /* See if we're dealing with a sym in a common block or not. */ | |
0e193637 | 3982 | if (is_in_common == 1 && gfc_option.warn_c_binding_type) |
a8b3b0b6 CR |
3983 | { |
3984 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3985 | "may not be a C interoperable " | |
3986 | "kind though common block '%s' is BIND(C)", | |
3987 | tmp_sym->name, com_block->name, | |
3988 | &(tmp_sym->declared_at), com_block->name); | |
3989 | } | |
3990 | else | |
3991 | { | |
3992 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3993 | gfc_error ("Type declaration '%s' at %L is not C " | |
3994 | "interoperable but it is BIND(C)", | |
3995 | tmp_sym->name, &(tmp_sym->declared_at)); | |
0e193637 | 3996 | else if (gfc_option.warn_c_binding_type) |
a8b3b0b6 CR |
3997 | gfc_warning ("Variable '%s' at %L " |
3998 | "may not be a C interoperable " | |
3999 | "kind but it is bind(c)", | |
4000 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4001 | } | |
4002 | } | |
f5acf0f2 | 4003 | |
a8b3b0b6 CR |
4004 | /* Variables declared w/in a common block can't be bind(c) |
4005 | since there's no way for C to see these variables, so there's | |
4006 | semantically no reason for the attribute. */ | |
4007 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4008 | { | |
4009 | gfc_error ("Variable '%s' in common block '%s' at " | |
4010 | "%L cannot be declared with BIND(C) " | |
4011 | "since it is not a global", | |
4012 | tmp_sym->name, com_block->name, | |
4013 | &(tmp_sym->declared_at)); | |
524af0d6 | 4014 | retval = false; |
a8b3b0b6 | 4015 | } |
f5acf0f2 | 4016 | |
a8b3b0b6 CR |
4017 | /* Scalar variables that are bind(c) can not have the pointer |
4018 | or allocatable attributes. */ | |
4019 | if (tmp_sym->attr.is_bind_c == 1) | |
4020 | { | |
4021 | if (tmp_sym->attr.pointer == 1) | |
4022 | { | |
4023 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4024 | "POINTER and BIND(C) attributes", | |
4025 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4026 | retval = false; |
a8b3b0b6 CR |
4027 | } |
4028 | ||
4029 | if (tmp_sym->attr.allocatable == 1) | |
4030 | { | |
4031 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4032 | "ALLOCATABLE and BIND(C) attributes", | |
4033 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4034 | retval = false; |
a8b3b0b6 CR |
4035 | } |
4036 | ||
8327f9c2 TB |
4037 | } |
4038 | ||
4039 | /* If it is a BIND(C) function, make sure the return value is a | |
4040 | scalar value. The previous tests in this function made sure | |
4041 | the type is interoperable. */ | |
4042 | if (bind_c_function && tmp_sym->as != NULL) | |
4043 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
4044 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
4045 | ||
4046 | /* BIND(C) functions can not return a character string. */ | |
4047 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4048 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4049 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4050 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
8327f9c2 | 4051 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
a8b3b0b6 CR |
4052 | "be a character string", tmp_sym->name, |
4053 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4054 | } |
4055 | ||
4056 | /* See if the symbol has been marked as private. If it has, make sure | |
4057 | there is no binding label and warn the user if there is one. */ | |
4058 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4059 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4060 | /* Use gfc_warning_now because we won't say that the symbol fails |
4061 | just because of this. */ | |
4062 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
4063 | "given the binding label '%s'", tmp_sym->name, | |
4064 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
4065 | ||
4066 | return retval; | |
4067 | } | |
4068 | ||
4069 | ||
4070 | /* Set the appropriate fields for a symbol that's been declared as | |
4071 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4072 | the type is C interoperable. Errors are reported by the functions | |
4073 | used to set/test these fields. */ | |
4074 | ||
524af0d6 | 4075 | bool |
a8b3b0b6 CR |
4076 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4077 | { | |
524af0d6 | 4078 | bool retval = true; |
f5acf0f2 | 4079 | |
a8b3b0b6 CR |
4080 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4081 | ||
4082 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4083 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4084 | ||
524af0d6 JB |
4085 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4086 | return false; | |
a8b3b0b6 CR |
4087 | |
4088 | return retval; | |
4089 | } | |
4090 | ||
4091 | ||
4092 | /* Set the fields marking the given common block as BIND(C), including | |
4093 | a binding label, and report any errors encountered. */ | |
4094 | ||
524af0d6 | 4095 | bool |
a8b3b0b6 CR |
4096 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4097 | { | |
524af0d6 | 4098 | bool retval = true; |
f5acf0f2 | 4099 | |
a8b3b0b6 | 4100 | /* destLabel, common name, typespec (which may have binding label). */ |
524af0d6 JB |
4101 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4102 | num_idents)) | |
4103 | return false; | |
a8b3b0b6 CR |
4104 | |
4105 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4106 | set_com_block_bind_c (com_block, 1); | |
4107 | ||
4108 | return retval; | |
4109 | } | |
4110 | ||
4111 | ||
4112 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4113 | attribute applies to. */ | |
4114 | ||
524af0d6 | 4115 | bool |
a8b3b0b6 CR |
4116 | get_bind_c_idents (void) |
4117 | { | |
4118 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4119 | int num_idents = 0; | |
4120 | gfc_symbol *tmp_sym = NULL; | |
4121 | match found_id; | |
4122 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4123 | |
a8b3b0b6 CR |
4124 | if (gfc_match_name (name) == MATCH_YES) |
4125 | { | |
4126 | found_id = MATCH_YES; | |
4127 | gfc_get_ha_symbol (name, &tmp_sym); | |
4128 | } | |
4129 | else if (match_common_name (name) == MATCH_YES) | |
4130 | { | |
4131 | found_id = MATCH_YES; | |
4132 | com_block = gfc_get_common (name, 0); | |
4133 | } | |
4134 | else | |
4135 | { | |
4136 | gfc_error ("Need either entity or common block name for " | |
4137 | "attribute specification statement at %C"); | |
524af0d6 | 4138 | return false; |
a8b3b0b6 | 4139 | } |
f5acf0f2 | 4140 | |
a8b3b0b6 CR |
4141 | /* Save the current identifier and look for more. */ |
4142 | do | |
4143 | { | |
4144 | /* Increment the number of identifiers found for this spec stmt. */ | |
4145 | num_idents++; | |
4146 | ||
4147 | /* Make sure we have a sym or com block, and verify that it can | |
4148 | be bind(c). Set the appropriate field(s) and look for more | |
4149 | identifiers. */ | |
f5acf0f2 | 4150 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4151 | { |
4152 | if (tmp_sym != NULL) | |
4153 | { | |
524af0d6 JB |
4154 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4155 | return false; | |
a8b3b0b6 CR |
4156 | } |
4157 | else | |
4158 | { | |
524af0d6 JB |
4159 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4160 | return false; | |
a8b3b0b6 | 4161 | } |
f5acf0f2 | 4162 | |
a8b3b0b6 CR |
4163 | /* Look to see if we have another identifier. */ |
4164 | tmp_sym = NULL; | |
4165 | if (gfc_match_eos () == MATCH_YES) | |
4166 | found_id = MATCH_NO; | |
4167 | else if (gfc_match_char (',') != MATCH_YES) | |
4168 | found_id = MATCH_NO; | |
4169 | else if (gfc_match_name (name) == MATCH_YES) | |
4170 | { | |
4171 | found_id = MATCH_YES; | |
4172 | gfc_get_ha_symbol (name, &tmp_sym); | |
4173 | } | |
4174 | else if (match_common_name (name) == MATCH_YES) | |
4175 | { | |
4176 | found_id = MATCH_YES; | |
4177 | com_block = gfc_get_common (name, 0); | |
4178 | } | |
4179 | else | |
4180 | { | |
4181 | gfc_error ("Missing entity or common block name for " | |
4182 | "attribute specification statement at %C"); | |
524af0d6 | 4183 | return false; |
a8b3b0b6 CR |
4184 | } |
4185 | } | |
4186 | else | |
4187 | { | |
4188 | gfc_internal_error ("Missing symbol"); | |
4189 | } | |
4190 | } while (found_id == MATCH_YES); | |
4191 | ||
4192 | /* if we get here we were successful */ | |
524af0d6 | 4193 | return true; |
a8b3b0b6 CR |
4194 | } |
4195 | ||
4196 | ||
4197 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4198 | |
a8b3b0b6 CR |
4199 | match |
4200 | gfc_match_bind_c_stmt (void) | |
4201 | { | |
4202 | match found_match = MATCH_NO; | |
4203 | gfc_typespec *ts; | |
4204 | ||
4205 | ts = ¤t_ts; | |
f5acf0f2 | 4206 | |
a8b3b0b6 CR |
4207 | /* This may not be necessary. */ |
4208 | gfc_clear_ts (ts); | |
4209 | /* Clear the temporary binding label holder. */ | |
62603fae | 4210 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4211 | |
4212 | /* Look for the bind(c). */ | |
1eabf70a | 4213 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4214 | |
4215 | if (found_match == MATCH_YES) | |
4216 | { | |
878cdb7b TB |
4217 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4218 | return MATCH_ERROR; | |
4219 | ||
a8b3b0b6 CR |
4220 | /* Look for the :: now, but it is not required. */ |
4221 | gfc_match (" :: "); | |
4222 | ||
4223 | /* Get the identifier(s) that needs to be updated. This may need to | |
4224 | change to hand the flag(s) for the attr specified so all identifiers | |
4225 | found can have all appropriate parts updated (assuming that the same | |
4226 | spec stmt can have multiple attrs, such as both bind(c) and | |
4227 | allocatable...). */ | |
524af0d6 | 4228 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4229 | /* Error message should have printed already. */ |
4230 | return MATCH_ERROR; | |
4231 | } | |
4232 | ||
4233 | return found_match; | |
4234 | } | |
4235 | ||
4236 | ||
6de9cd9a DN |
4237 | /* Match a data declaration statement. */ |
4238 | ||
4239 | match | |
4240 | gfc_match_data_decl (void) | |
4241 | { | |
4242 | gfc_symbol *sym; | |
4243 | match m; | |
949d5b72 | 4244 | int elem; |
6de9cd9a | 4245 | |
a8b3b0b6 | 4246 | num_idents_on_line = 0; |
f5acf0f2 | 4247 | |
e74f1cc8 | 4248 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4249 | if (m != MATCH_YES) |
4250 | return m; | |
4251 | ||
2e23972e JW |
4252 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4253 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4254 | { |
bc21d315 | 4255 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4256 | |
4257 | if (sym == NULL) | |
4258 | { | |
4259 | m = MATCH_ERROR; | |
4260 | goto cleanup; | |
4261 | } | |
4262 | ||
bc21d315 | 4263 | current_ts.u.derived = sym; |
6de9cd9a DN |
4264 | } |
4265 | ||
4266 | m = match_attr_spec (); | |
4267 | if (m == MATCH_ERROR) | |
4268 | { | |
4269 | m = MATCH_NO; | |
4270 | goto cleanup; | |
4271 | } | |
4272 | ||
8b704316 PT |
4273 | if (current_ts.type == BT_CLASS |
4274 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4275 | goto ok; | |
4276 | ||
2e23972e JW |
4277 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4278 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4279 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4280 | { |
4281 | ||
4282 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4283 | goto ok; | |
4284 | ||
bc21d315 | 4285 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4286 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4287 | |
976e21f6 | 4288 | /* Any symbol that we find had better be a type definition |
636dff67 | 4289 | which has its components defined. */ |
976e21f6 | 4290 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4291 | && (current_ts.u.derived->components != NULL |
4292 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4293 | goto ok; |
4294 | ||
a1b80ec7 JW |
4295 | gfc_error ("Derived type at %C has not been previously defined " |
4296 | "and so cannot appear in a derived type definition"); | |
4297 | m = MATCH_ERROR; | |
4298 | goto cleanup; | |
6de9cd9a DN |
4299 | } |
4300 | ||
4301 | ok: | |
4302 | /* If we have an old-style character declaration, and no new-style | |
4303 | attribute specifications, then there a comma is optional between | |
4304 | the type specification and the variable list. */ | |
4305 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4306 | gfc_match_char (','); | |
4307 | ||
949d5b72 PT |
4308 | /* Give the types/attributes to symbols that follow. Give the element |
4309 | a number so that repeat character length expressions can be copied. */ | |
4310 | elem = 1; | |
6de9cd9a DN |
4311 | for (;;) |
4312 | { | |
a8b3b0b6 | 4313 | num_idents_on_line++; |
949d5b72 | 4314 | m = variable_decl (elem++); |
6de9cd9a DN |
4315 | if (m == MATCH_ERROR) |
4316 | goto cleanup; | |
4317 | if (m == MATCH_NO) | |
4318 | break; | |
4319 | ||
4320 | if (gfc_match_eos () == MATCH_YES) | |
4321 | goto cleanup; | |
4322 | if (gfc_match_char (',') != MATCH_YES) | |
4323 | break; | |
4324 | } | |
4325 | ||
8f81c3c6 PT |
4326 | if (gfc_error_flag_test () == 0) |
4327 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
4328 | m = MATCH_ERROR; |
4329 | ||
a9f6f1f2 JD |
4330 | gfc_free_data_all (gfc_current_ns); |
4331 | ||
6de9cd9a DN |
4332 | cleanup: |
4333 | gfc_free_array_spec (current_as); | |
4334 | current_as = NULL; | |
4335 | return m; | |
4336 | } | |
4337 | ||
4338 | ||
4339 | /* Match a prefix associated with a function or subroutine | |
4340 | declaration. If the typespec pointer is nonnull, then a typespec | |
4341 | can be matched. Note that if nothing matches, MATCH_YES is | |
4342 | returned (the null string was matched). */ | |
4343 | ||
1c8bcdf7 PT |
4344 | match |
4345 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4346 | { |
7389bce6 | 4347 | bool seen_type; |
e6c14898 DK |
4348 | bool seen_impure; |
4349 | bool found_prefix; | |
6de9cd9a DN |
4350 | |
4351 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4352 | seen_type = false; |
4353 | seen_impure = false; | |
6de9cd9a | 4354 | |
3df684e2 DK |
4355 | gcc_assert (!gfc_matching_prefix); |
4356 | gfc_matching_prefix = true; | |
f37e928c | 4357 | |
e6c14898 | 4358 | do |
6de9cd9a | 4359 | { |
e6c14898 | 4360 | found_prefix = false; |
6de9cd9a | 4361 | |
e6c14898 DK |
4362 | if (!seen_type && ts != NULL |
4363 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4364 | && gfc_match_space () == MATCH_YES) | |
4365 | { | |
6de9cd9a | 4366 | |
e6c14898 DK |
4367 | seen_type = true; |
4368 | found_prefix = true; | |
4369 | } | |
4370 | ||
4371 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4372 | { | |
524af0d6 | 4373 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4374 | goto error; |
4375 | ||
4376 | found_prefix = true; | |
4377 | } | |
4378 | ||
4379 | if (gfc_match ("pure% ") == MATCH_YES) | |
4380 | { | |
524af0d6 | 4381 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4382 | goto error; |
4383 | ||
4384 | found_prefix = true; | |
4385 | } | |
6de9cd9a | 4386 | |
e6c14898 DK |
4387 | if (gfc_match ("recursive% ") == MATCH_YES) |
4388 | { | |
524af0d6 | 4389 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4390 | goto error; |
4391 | ||
4392 | found_prefix = true; | |
4393 | } | |
4394 | ||
4395 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4396 | attribute but rather only prevents ELEMENTAL routines from being | |
4397 | automatically PURE. */ | |
4398 | if (gfc_match ("impure% ") == MATCH_YES) | |
4399 | { | |
524af0d6 | 4400 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
4401 | goto error; |
4402 | ||
4403 | seen_impure = true; | |
4404 | found_prefix = true; | |
4405 | } | |
6de9cd9a | 4406 | } |
e6c14898 | 4407 | while (found_prefix); |
6de9cd9a | 4408 | |
e6c14898 DK |
4409 | /* IMPURE and PURE must not both appear, of course. */ |
4410 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4411 | { |
e6c14898 DK |
4412 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4413 | goto error; | |
6de9cd9a DN |
4414 | } |
4415 | ||
e6c14898 DK |
4416 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4417 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4418 | { |
524af0d6 | 4419 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 4420 | goto error; |
6de9cd9a DN |
4421 | } |
4422 | ||
4423 | /* At this point, the next item is not a prefix. */ | |
3df684e2 DK |
4424 | gcc_assert (gfc_matching_prefix); |
4425 | gfc_matching_prefix = false; | |
6de9cd9a | 4426 | return MATCH_YES; |
f37e928c DK |
4427 | |
4428 | error: | |
3df684e2 DK |
4429 | gcc_assert (gfc_matching_prefix); |
4430 | gfc_matching_prefix = false; | |
f37e928c | 4431 | return MATCH_ERROR; |
6de9cd9a DN |
4432 | } |
4433 | ||
4434 | ||
1c8bcdf7 | 4435 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4436 | |
524af0d6 | 4437 | static bool |
636dff67 | 4438 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4439 | { |
524af0d6 JB |
4440 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4441 | return false; | |
6de9cd9a | 4442 | |
524af0d6 JB |
4443 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4444 | return false; | |
6de9cd9a | 4445 | |
524af0d6 JB |
4446 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4447 | return false; | |
6de9cd9a | 4448 | |
524af0d6 | 4449 | return true; |
6de9cd9a DN |
4450 | } |
4451 | ||
4452 | ||
4453 | /* Match a formal argument list. */ | |
4454 | ||
4455 | match | |
636dff67 | 4456 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4457 | { |
4458 | gfc_formal_arglist *head, *tail, *p, *q; | |
4459 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4460 | gfc_symbol *sym; | |
4461 | match m; | |
4462 | ||
4463 | head = tail = NULL; | |
4464 | ||
4465 | if (gfc_match_char ('(') != MATCH_YES) | |
4466 | { | |
4467 | if (null_flag) | |
4468 | goto ok; | |
4469 | return MATCH_NO; | |
4470 | } | |
4471 | ||
4472 | if (gfc_match_char (')') == MATCH_YES) | |
4473 | goto ok; | |
4474 | ||
4475 | for (;;) | |
4476 | { | |
4477 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
4478 | { |
4479 | sym = NULL; | |
524af0d6 JB |
4480 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4481 | "at %C")) | |
9362a03b JW |
4482 | { |
4483 | m = MATCH_ERROR; | |
4484 | goto cleanup; | |
4485 | } | |
4486 | } | |
6de9cd9a DN |
4487 | else |
4488 | { | |
4489 | m = gfc_match_name (name); | |
4490 | if (m != MATCH_YES) | |
4491 | goto cleanup; | |
4492 | ||
4493 | if (gfc_get_symbol (name, NULL, &sym)) | |
4494 | goto cleanup; | |
4495 | } | |
4496 | ||
4497 | p = gfc_get_formal_arglist (); | |
4498 | ||
4499 | if (head == NULL) | |
4500 | head = tail = p; | |
4501 | else | |
4502 | { | |
4503 | tail->next = p; | |
4504 | tail = p; | |
4505 | } | |
4506 | ||
4507 | tail->sym = sym; | |
4508 | ||
4509 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4510 | dummy procedure. We don't apply these attributes to formal |
4511 | arguments of statement functions. */ | |
6de9cd9a | 4512 | if (sym != NULL && !st_flag |
524af0d6 JB |
4513 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4514 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
4515 | { |
4516 | m = MATCH_ERROR; | |
4517 | goto cleanup; | |
4518 | } | |
4519 | ||
4520 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4521 | so check for it explicitly. After the statement is accepted, |
4522 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4523 | if (gfc_new_block != NULL && sym != NULL |
4524 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4525 | { | |
4526 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4527 | sym->name); | |
4528 | m = MATCH_ERROR; | |
4529 | goto cleanup; | |
4530 | } | |
4531 | ||
4532 | if (gfc_match_char (')') == MATCH_YES) | |
4533 | goto ok; | |
4534 | ||
4535 | m = gfc_match_char (','); | |
4536 | if (m != MATCH_YES) | |
4537 | { | |
4538 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4539 | goto cleanup; | |
4540 | } | |
4541 | } | |
4542 | ||
4543 | ok: | |
4544 | /* Check for duplicate symbols in the formal argument list. */ | |
4545 | if (head != NULL) | |
4546 | { | |
4547 | for (p = head; p->next; p = p->next) | |
4548 | { | |
4549 | if (p->sym == NULL) | |
4550 | continue; | |
4551 | ||
4552 | for (q = p->next; q; q = q->next) | |
4553 | if (p->sym == q->sym) | |
4554 | { | |
636dff67 SK |
4555 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4556 | "at %C", p->sym->name); | |
6de9cd9a DN |
4557 | |
4558 | m = MATCH_ERROR; | |
4559 | goto cleanup; | |
4560 | } | |
4561 | } | |
4562 | } | |
4563 | ||
524af0d6 | 4564 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
4565 | { |
4566 | m = MATCH_ERROR; | |
4567 | goto cleanup; | |
4568 | } | |
4569 | ||
4570 | return MATCH_YES; | |
4571 | ||
4572 | cleanup: | |
4573 | gfc_free_formal_arglist (head); | |
4574 | return m; | |
4575 | } | |
4576 | ||
4577 | ||
4578 | /* Match a RESULT specification following a function declaration or | |
4579 | ENTRY statement. Also matches the end-of-statement. */ | |
4580 | ||
4581 | static match | |
66e4ab31 | 4582 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4583 | { |
4584 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4585 | gfc_symbol *r; | |
4586 | match m; | |
4587 | ||
4588 | if (gfc_match (" result (") != MATCH_YES) | |
4589 | return MATCH_NO; | |
4590 | ||
4591 | m = gfc_match_name (name); | |
4592 | if (m != MATCH_YES) | |
4593 | return m; | |
4594 | ||
a8b3b0b6 CR |
4595 | /* Get the right paren, and that's it because there could be the |
4596 | bind(c) attribute after the result clause. */ | |
524af0d6 | 4597 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 4598 | { |
a8b3b0b6 | 4599 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4600 | return MATCH_ERROR; |
4601 | } | |
4602 | ||
4603 | if (strcmp (function->name, name) == 0) | |
4604 | { | |
636dff67 | 4605 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4606 | return MATCH_ERROR; |
4607 | } | |
4608 | ||
4609 | if (gfc_get_symbol (name, NULL, &r)) | |
4610 | return MATCH_ERROR; | |
4611 | ||
524af0d6 | 4612 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
4613 | return MATCH_ERROR; |
4614 | ||
4615 | *result = r; | |
4616 | ||
4617 | return MATCH_YES; | |
4618 | } | |
4619 | ||
4620 | ||
a8b3b0b6 CR |
4621 | /* Match a function suffix, which could be a combination of a result |
4622 | clause and BIND(C), either one, or neither. The draft does not | |
4623 | require them to come in a specific order. */ | |
4624 | ||
4625 | match | |
4626 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4627 | { | |
4628 | match is_bind_c; /* Found bind(c). */ | |
4629 | match is_result; /* Found result clause. */ | |
4630 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4631 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4632 | bool allow_binding_name; |
a8b3b0b6 CR |
4633 | |
4634 | /* Initialize to having found nothing. */ | |
4635 | found_match = MATCH_NO; | |
f5acf0f2 | 4636 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
4637 | is_result = MATCH_NO; |
4638 | ||
4639 | /* Get the next char to narrow between result and bind(c). */ | |
4640 | gfc_gobble_whitespace (); | |
8fc541d3 | 4641 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4642 | |
1eabf70a TB |
4643 | /* C binding names are not allowed for internal procedures. */ |
4644 | if (gfc_current_state () == COMP_CONTAINS | |
4645 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4646 | allow_binding_name = false; | |
4647 | else | |
4648 | allow_binding_name = true; | |
4649 | ||
a8b3b0b6 CR |
4650 | switch (peek_char) |
4651 | { | |
4652 | case 'r': | |
4653 | /* Look for result clause. */ | |
4654 | is_result = match_result (sym, result); | |
4655 | if (is_result == MATCH_YES) | |
4656 | { | |
4657 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4658 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4659 | /* We've found the result clause and possibly bind(c). */ |
4660 | found_match = MATCH_YES; | |
4661 | } | |
4662 | else | |
4663 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 4664 | found_match = is_result; |
a8b3b0b6 CR |
4665 | break; |
4666 | case 'b': | |
4667 | /* Look for bind(c) first. */ | |
1eabf70a | 4668 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4669 | if (is_bind_c == MATCH_YES) |
4670 | { | |
4671 | /* Now see if a result clause followed it. */ | |
4672 | is_result = match_result (sym, result); | |
4673 | found_match = MATCH_YES; | |
4674 | } | |
4675 | else | |
4676 | { | |
4677 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4678 | found_match = MATCH_ERROR; | |
4679 | } | |
4680 | break; | |
4681 | default: | |
4682 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4683 | found_match = MATCH_ERROR; | |
4684 | break; | |
4685 | } | |
4686 | ||
a8b3b0b6 | 4687 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4688 | { |
1eabf70a | 4689 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4690 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4691 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
4692 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4693 | "at %L may not be specified for an internal " | |
4694 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
4695 | return MATCH_ERROR; |
4696 | ||
524af0d6 | 4697 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
4698 | return MATCH_ERROR; |
4699 | } | |
f5acf0f2 | 4700 | |
a8b3b0b6 CR |
4701 | return found_match; |
4702 | } | |
4703 | ||
4704 | ||
3070bab4 JW |
4705 | /* Procedure pointer return value without RESULT statement: |
4706 | Add "hidden" result variable named "ppr@". */ | |
4707 | ||
524af0d6 | 4708 | static bool |
3070bab4 JW |
4709 | add_hidden_procptr_result (gfc_symbol *sym) |
4710 | { | |
4711 | bool case1,case2; | |
4712 | ||
4713 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 4714 | return false; |
3070bab4 JW |
4715 | |
4716 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4717 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4718 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4719 | && sym->attr.external; | |
4720 | /* Second usage case: INTERFACE statements. */ | |
4721 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4722 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4723 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4724 | ||
4725 | if (case1 || case2) | |
4726 | { | |
4727 | gfc_symtree *stree; | |
4728 | if (case1) | |
08a6b8e0 | 4729 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4730 | else if (case2) |
c73b6478 JW |
4731 | { |
4732 | gfc_symtree *st2; | |
08a6b8e0 | 4733 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4734 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4735 | st2->n.sym = stree->n.sym; | |
4736 | } | |
3070bab4 JW |
4737 | sym->result = stree->n.sym; |
4738 | ||
4739 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4740 | sym->result->attr.pointer = sym->attr.pointer; | |
4741 | sym->result->attr.external = sym->attr.external; | |
4742 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4743 | sym->result->ts = sym->ts; |
3070bab4 JW |
4744 | sym->attr.proc_pointer = 0; |
4745 | sym->attr.pointer = 0; | |
4746 | sym->attr.external = 0; | |
4747 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4748 | { | |
4749 | sym->result->attr.pointer = 0; | |
4750 | sym->result->attr.proc_pointer = 1; | |
4751 | } | |
4752 | ||
4753 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4754 | } | |
4755 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4756 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4757 | && sym->result && sym->result != sym && sym->result->attr.external | |
4758 | && sym == gfc_current_ns->proc_name | |
4759 | && sym == sym->result->ns->proc_name | |
4760 | && strcmp ("ppr@", sym->result->name) == 0) | |
4761 | { | |
4762 | sym->result->attr.proc_pointer = 1; | |
4763 | sym->attr.pointer = 0; | |
524af0d6 | 4764 | return true; |
3070bab4 JW |
4765 | } |
4766 | else | |
524af0d6 | 4767 | return false; |
3070bab4 JW |
4768 | } |
4769 | ||
4770 | ||
713485cc JW |
4771 | /* Match the interface for a PROCEDURE declaration, |
4772 | including brackets (R1212). */ | |
69773742 JW |
4773 | |
4774 | static match | |
713485cc | 4775 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
4776 | { |
4777 | match m; | |
3276e0b3 | 4778 | gfc_symtree *st; |
69773742 | 4779 | locus old_loc, entry_loc; |
3276e0b3 PT |
4780 | gfc_namespace *old_ns = gfc_current_ns; |
4781 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 4782 | |
3276e0b3 | 4783 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
4784 | gfc_clear_ts (¤t_ts); |
4785 | ||
4786 | if (gfc_match (" (") != MATCH_YES) | |
4787 | { | |
4788 | gfc_current_locus = entry_loc; | |
4789 | return MATCH_NO; | |
4790 | } | |
4791 | ||
4792 | /* Get the type spec. for the procedure interface. */ | |
4793 | old_loc = gfc_current_locus; | |
e74f1cc8 | 4794 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 4795 | gfc_gobble_whitespace (); |
8fc541d3 | 4796 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
4797 | goto got_ts; |
4798 | ||
4799 | if (m == MATCH_ERROR) | |
4800 | return m; | |
4801 | ||
3276e0b3 | 4802 | /* Procedure interface is itself a procedure. */ |
69773742 | 4803 | gfc_current_locus = old_loc; |
3276e0b3 | 4804 | m = gfc_match_name (name); |
69773742 | 4805 | |
3276e0b3 PT |
4806 | /* First look to see if it is already accessible in the current |
4807 | namespace because it is use associated or contained. */ | |
4808 | st = NULL; | |
4809 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4810 | return MATCH_ERROR; | |
4811 | ||
4812 | /* If it is still not found, then try the parent namespace, if it | |
4813 | exists and create the symbol there if it is still not found. */ | |
4814 | if (gfc_current_ns->parent) | |
4815 | gfc_current_ns = gfc_current_ns->parent; | |
4816 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4817 | return MATCH_ERROR; | |
4818 | ||
4819 | gfc_current_ns = old_ns; | |
4820 | *proc_if = st->n.sym; | |
69773742 | 4821 | |
713485cc | 4822 | if (*proc_if) |
69773742 | 4823 | { |
713485cc | 4824 | (*proc_if)->refs++; |
bb343a6c TB |
4825 | /* Resolve interface if possible. That way, attr.procedure is only set |
4826 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 4827 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
713485cc JW |
4828 | while ((*proc_if)->ts.interface) |
4829 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 4830 | |
0e8d854e JW |
4831 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
4832 | && (*proc_if)->ts.type == BT_UNKNOWN | |
524af0d6 JB |
4833 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
4834 | (*proc_if)->name, NULL)) | |
0e8d854e | 4835 | return MATCH_ERROR; |
69773742 JW |
4836 | } |
4837 | ||
4838 | got_ts: | |
69773742 JW |
4839 | if (gfc_match (" )") != MATCH_YES) |
4840 | { | |
4841 | gfc_current_locus = entry_loc; | |
4842 | return MATCH_NO; | |
4843 | } | |
4844 | ||
713485cc JW |
4845 | return MATCH_YES; |
4846 | } | |
4847 | ||
4848 | ||
4849 | /* Match a PROCEDURE declaration (R1211). */ | |
4850 | ||
4851 | static match | |
4852 | match_procedure_decl (void) | |
4853 | { | |
4854 | match m; | |
4855 | gfc_symbol *sym, *proc_if = NULL; | |
4856 | int num; | |
4857 | gfc_expr *initializer = NULL; | |
4858 | ||
4859 | /* Parse interface (with brackets). */ | |
4860 | m = match_procedure_interface (&proc_if); | |
4861 | if (m != MATCH_YES) | |
4862 | return m; | |
4863 | ||
4864 | /* Parse attributes (with colons). */ | |
69773742 JW |
4865 | m = match_attr_spec(); |
4866 | if (m == MATCH_ERROR) | |
4867 | return MATCH_ERROR; | |
4868 | ||
0859be17 TB |
4869 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
4870 | { | |
4871 | current_attr.is_bind_c = 1; | |
4872 | has_name_equals = 0; | |
4873 | curr_binding_label = NULL; | |
4874 | } | |
4875 | ||
69773742 JW |
4876 | /* Get procedure symbols. */ |
4877 | for(num=1;;num++) | |
4878 | { | |
69773742 JW |
4879 | m = gfc_match_symbol (&sym, 0); |
4880 | if (m == MATCH_NO) | |
4881 | goto syntax; | |
4882 | else if (m == MATCH_ERROR) | |
4883 | return m; | |
4884 | ||
4885 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 4886 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
4887 | return MATCH_ERROR; |
4888 | ||
4889 | if (sym->attr.is_bind_c) | |
4890 | { | |
4891 | /* Check for C1218. */ | |
4892 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4893 | { | |
4894 | gfc_error ("BIND(C) attribute at %C requires " | |
4895 | "an interface with BIND(C)"); | |
4896 | return MATCH_ERROR; | |
4897 | } | |
4898 | /* Check for C1217. */ | |
4899 | if (has_name_equals && sym->attr.pointer) | |
4900 | { | |
4901 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4902 | "POINTER attribute at %C"); | |
4903 | return MATCH_ERROR; | |
4904 | } | |
4905 | if (has_name_equals && sym->attr.dummy) | |
4906 | { | |
4907 | gfc_error ("Dummy procedure at %C may not have " | |
4908 | "BIND(C) attribute with NAME"); | |
4909 | return MATCH_ERROR; | |
4910 | } | |
4911 | /* Set binding label for BIND(C). */ | |
524af0d6 | 4912 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
4913 | return MATCH_ERROR; |
4914 | } | |
4915 | ||
524af0d6 | 4916 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 4917 | return MATCH_ERROR; |
3070bab4 | 4918 | |
524af0d6 | 4919 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
4920 | sym = sym->result; |
4921 | ||
524af0d6 | 4922 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
4923 | return MATCH_ERROR; |
4924 | ||
4925 | /* Set interface. */ | |
4926 | if (proc_if != NULL) | |
6cc309c9 | 4927 | { |
1d146030 JW |
4928 | if (sym->ts.type != BT_UNKNOWN) |
4929 | { | |
4930 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4931 | sym->name, &gfc_current_locus, | |
4932 | gfc_basic_typename (sym->ts.type)); | |
4933 | return MATCH_ERROR; | |
4934 | } | |
32d99e68 | 4935 | sym->ts.interface = proc_if; |
6cc309c9 | 4936 | sym->attr.untyped = 1; |
c73b6478 | 4937 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 4938 | } |
69773742 JW |
4939 | else if (current_ts.type != BT_UNKNOWN) |
4940 | { | |
524af0d6 | 4941 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 4942 | return MATCH_ERROR; |
32d99e68 JW |
4943 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4944 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 4945 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 4946 | sym->ts.interface->attr.function = 1; |
d91909c0 | 4947 | sym->attr.function = 1; |
c73b6478 | 4948 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
4949 | } |
4950 | ||
8fb74da4 JW |
4951 | if (gfc_match (" =>") == MATCH_YES) |
4952 | { | |
4953 | if (!current_attr.pointer) | |
4954 | { | |
4955 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4956 | m = MATCH_ERROR; | |
4957 | goto cleanup; | |
4958 | } | |
4959 | ||
80f95228 | 4960 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
4961 | if (m != MATCH_YES) |
4962 | goto cleanup; | |
4963 | ||
524af0d6 | 4964 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
4965 | goto cleanup; |
4966 | ||
4967 | } | |
4968 | ||
69773742 JW |
4969 | if (gfc_match_eos () == MATCH_YES) |
4970 | return MATCH_YES; | |
4971 | if (gfc_match_char (',') != MATCH_YES) | |
4972 | goto syntax; | |
4973 | } | |
4974 | ||
4975 | syntax: | |
4976 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4977 | return MATCH_ERROR; | |
8fb74da4 JW |
4978 | |
4979 | cleanup: | |
4980 | /* Free stuff up and return. */ | |
4981 | gfc_free_expr (initializer); | |
4982 | return m; | |
69773742 JW |
4983 | } |
4984 | ||
4985 | ||
713485cc JW |
4986 | static match |
4987 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4988 | ||
4989 | ||
4990 | /* Match a procedure pointer component declaration (R445). */ | |
4991 | ||
4992 | static match | |
4993 | match_ppc_decl (void) | |
4994 | { | |
4995 | match m; | |
4996 | gfc_symbol *proc_if = NULL; | |
4997 | gfc_typespec ts; | |
4998 | int num; | |
4999 | gfc_component *c; | |
5000 | gfc_expr *initializer = NULL; | |
5001 | gfc_typebound_proc* tb; | |
5002 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5003 | ||
5004 | /* Parse interface (with brackets). */ | |
5005 | m = match_procedure_interface (&proc_if); | |
5006 | if (m != MATCH_YES) | |
5007 | goto syntax; | |
5008 | ||
5009 | /* Parse attributes. */ | |
5010 | tb = XCNEW (gfc_typebound_proc); | |
5011 | tb->where = gfc_current_locus; | |
5012 | m = match_binding_attributes (tb, false, true); | |
5013 | if (m == MATCH_ERROR) | |
5014 | return m; | |
5015 | ||
713485cc JW |
5016 | gfc_clear_attr (¤t_attr); |
5017 | current_attr.procedure = 1; | |
5018 | current_attr.proc_pointer = 1; | |
5019 | current_attr.access = tb->access; | |
5020 | current_attr.flavor = FL_PROCEDURE; | |
5021 | ||
5022 | /* Match the colons (required). */ | |
5023 | if (gfc_match (" ::") != MATCH_YES) | |
5024 | { | |
5025 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
5026 | return MATCH_ERROR; | |
5027 | } | |
5028 | ||
5029 | /* Check for C450. */ | |
5030 | if (!tb->nopass && proc_if == NULL) | |
5031 | { | |
5032 | gfc_error("NOPASS or explicit interface required at %C"); | |
5033 | return MATCH_ERROR; | |
5034 | } | |
5035 | ||
524af0d6 | 5036 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5037 | return MATCH_ERROR; |
5038 | ||
713485cc JW |
5039 | /* Match PPC names. */ |
5040 | ts = current_ts; | |
5041 | for(num=1;;num++) | |
5042 | { | |
5043 | m = gfc_match_name (name); | |
5044 | if (m == MATCH_NO) | |
5045 | goto syntax; | |
5046 | else if (m == MATCH_ERROR) | |
5047 | return m; | |
5048 | ||
524af0d6 | 5049 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5050 | return MATCH_ERROR; |
5051 | ||
5052 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5053 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5054 | return MATCH_ERROR; |
5055 | ||
524af0d6 | 5056 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5057 | return MATCH_ERROR; |
5058 | ||
524af0d6 | 5059 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5060 | return MATCH_ERROR; |
5061 | ||
2be03814 TB |
5062 | if (num == 1) |
5063 | c->tb = tb; | |
5064 | else | |
5065 | { | |
5066 | c->tb = XCNEW (gfc_typebound_proc); | |
5067 | c->tb->where = gfc_current_locus; | |
5068 | *c->tb = *tb; | |
5069 | } | |
90661f26 | 5070 | |
713485cc JW |
5071 | /* Set interface. */ |
5072 | if (proc_if != NULL) | |
5073 | { | |
5074 | c->ts.interface = proc_if; | |
5075 | c->attr.untyped = 1; | |
5076 | c->attr.if_source = IFSRC_IFBODY; | |
5077 | } | |
5078 | else if (ts.type != BT_UNKNOWN) | |
5079 | { | |
5080 | c->ts = ts; | |
5081 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5082 | c->ts.interface->result = c->ts.interface; |
713485cc | 5083 | c->ts.interface->ts = ts; |
d91909c0 | 5084 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5085 | c->ts.interface->attr.function = 1; |
d91909c0 | 5086 | c->attr.function = 1; |
713485cc JW |
5087 | c->attr.if_source = IFSRC_UNKNOWN; |
5088 | } | |
5089 | ||
5090 | if (gfc_match (" =>") == MATCH_YES) | |
5091 | { | |
80f95228 | 5092 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5093 | if (m != MATCH_YES) |
5094 | { | |
5095 | gfc_free_expr (initializer); | |
5096 | return m; | |
5097 | } | |
5098 | c->initializer = initializer; | |
5099 | } | |
5100 | ||
5101 | if (gfc_match_eos () == MATCH_YES) | |
5102 | return MATCH_YES; | |
5103 | if (gfc_match_char (',') != MATCH_YES) | |
5104 | goto syntax; | |
5105 | } | |
5106 | ||
5107 | syntax: | |
5108 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5109 | return MATCH_ERROR; | |
5110 | } | |
5111 | ||
5112 | ||
69773742 JW |
5113 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5114 | ||
5115 | static match | |
5116 | match_procedure_in_interface (void) | |
5117 | { | |
5118 | match m; | |
5119 | gfc_symbol *sym; | |
5120 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5121 | locus old_locus; |
69773742 JW |
5122 | |
5123 | if (current_interface.type == INTERFACE_NAMELESS | |
5124 | || current_interface.type == INTERFACE_ABSTRACT) | |
5125 | { | |
5126 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5127 | return MATCH_ERROR; | |
5128 | } | |
5129 | ||
a6fcd41a TB |
5130 | /* Check if the F2008 optional double colon appears. */ |
5131 | gfc_gobble_whitespace (); | |
5132 | old_locus = gfc_current_locus; | |
5133 | if (gfc_match ("::") == MATCH_YES) | |
5134 | { | |
524af0d6 JB |
5135 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5136 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5137 | return MATCH_ERROR; |
5138 | } | |
5139 | else | |
5140 | gfc_current_locus = old_locus; | |
5141 | ||
69773742 JW |
5142 | for(;;) |
5143 | { | |
5144 | m = gfc_match_name (name); | |
5145 | if (m == MATCH_NO) | |
5146 | goto syntax; | |
5147 | else if (m == MATCH_ERROR) | |
5148 | return m; | |
5149 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5150 | return MATCH_ERROR; | |
5151 | ||
524af0d6 | 5152 | if (!gfc_add_interface (sym)) |
69773742 JW |
5153 | return MATCH_ERROR; |
5154 | ||
69773742 JW |
5155 | if (gfc_match_eos () == MATCH_YES) |
5156 | break; | |
5157 | if (gfc_match_char (',') != MATCH_YES) | |
5158 | goto syntax; | |
5159 | } | |
5160 | ||
5161 | return MATCH_YES; | |
5162 | ||
5163 | syntax: | |
5164 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5165 | return MATCH_ERROR; | |
5166 | } | |
5167 | ||
5168 | ||
5169 | /* General matcher for PROCEDURE declarations. */ | |
5170 | ||
30b608eb DK |
5171 | static match match_procedure_in_type (void); |
5172 | ||
69773742 JW |
5173 | match |
5174 | gfc_match_procedure (void) | |
5175 | { | |
5176 | match m; | |
5177 | ||
5178 | switch (gfc_current_state ()) | |
5179 | { | |
5180 | case COMP_NONE: | |
5181 | case COMP_PROGRAM: | |
5182 | case COMP_MODULE: | |
5183 | case COMP_SUBROUTINE: | |
5184 | case COMP_FUNCTION: | |
3547d57e | 5185 | case COMP_BLOCK: |
69773742 JW |
5186 | m = match_procedure_decl (); |
5187 | break; | |
5188 | case COMP_INTERFACE: | |
5189 | m = match_procedure_in_interface (); | |
5190 | break; | |
5191 | case COMP_DERIVED: | |
713485cc JW |
5192 | m = match_ppc_decl (); |
5193 | break; | |
30b608eb DK |
5194 | case COMP_DERIVED_CONTAINS: |
5195 | m = match_procedure_in_type (); | |
5196 | break; | |
69773742 JW |
5197 | default: |
5198 | return MATCH_NO; | |
5199 | } | |
5200 | ||
5201 | if (m != MATCH_YES) | |
5202 | return m; | |
5203 | ||
524af0d6 | 5204 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5205 | return MATCH_ERROR; |
5206 | ||
5207 | return m; | |
5208 | } | |
5209 | ||
5210 | ||
c3005b0f DK |
5211 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5212 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5213 | parser-state-stack to find out whether we're in a module. */ | |
5214 | ||
5215 | static void | |
5216 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5217 | { | |
5218 | bool in_module; | |
5219 | ||
5220 | in_module = (gfc_state_stack->previous | |
5221 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5222 | ||
5223 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5224 | } | |
5225 | ||
5226 | ||
6de9cd9a DN |
5227 | /* Match a function declaration. */ |
5228 | ||
5229 | match | |
5230 | gfc_match_function_decl (void) | |
5231 | { | |
5232 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5233 | gfc_symbol *sym, *result; | |
5234 | locus old_loc; | |
5235 | match m; | |
a8b3b0b6 | 5236 | match suffix_match; |
f5acf0f2 | 5237 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5238 | |
5239 | if (gfc_current_state () != COMP_NONE | |
5240 | && gfc_current_state () != COMP_INTERFACE | |
5241 | && gfc_current_state () != COMP_CONTAINS) | |
5242 | return MATCH_NO; | |
5243 | ||
5244 | gfc_clear_ts (¤t_ts); | |
5245 | ||
63645982 | 5246 | old_loc = gfc_current_locus; |
6de9cd9a | 5247 | |
1c8bcdf7 | 5248 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5249 | if (m != MATCH_YES) |
5250 | { | |
63645982 | 5251 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5252 | return m; |
5253 | } | |
5254 | ||
5255 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5256 | { | |
63645982 | 5257 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5258 | return MATCH_NO; |
5259 | } | |
1a492601 | 5260 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5261 | return MATCH_ERROR; |
3070bab4 | 5262 | |
524af0d6 | 5263 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5264 | sym = sym->result; |
5265 | ||
6de9cd9a DN |
5266 | gfc_new_block = sym; |
5267 | ||
5268 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5269 | if (m == MATCH_NO) | |
2b9a33ae TS |
5270 | { |
5271 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5272 | "definition at %C"); |
2b9a33ae TS |
5273 | m = MATCH_ERROR; |
5274 | goto cleanup; | |
5275 | } | |
6de9cd9a DN |
5276 | else if (m == MATCH_ERROR) |
5277 | goto cleanup; | |
5278 | ||
5279 | result = NULL; | |
5280 | ||
a8b3b0b6 CR |
5281 | /* According to the draft, the bind(c) and result clause can |
5282 | come in either order after the formal_arg_list (i.e., either | |
5283 | can be first, both can exist together or by themselves or neither | |
5284 | one). Therefore, the match_result can't match the end of the | |
5285 | string, and check for the bind(c) or result clause in either order. */ | |
5286 | found_match = gfc_match_eos (); | |
5287 | ||
5288 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5289 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5290 | not allowed for procedures. */ | |
5291 | if (sym->attr.is_bind_c == 1) | |
5292 | { | |
5293 | sym->attr.is_bind_c = 0; | |
5294 | if (sym->old_symbol != NULL) | |
5295 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5296 | "variables or common blocks", | |
5297 | &(sym->old_symbol->declared_at)); | |
5298 | else | |
5299 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5300 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5301 | } |
5302 | ||
a8b3b0b6 | 5303 | if (found_match != MATCH_YES) |
6de9cd9a | 5304 | { |
a8b3b0b6 CR |
5305 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5306 | suffix_match = gfc_match_suffix (sym, &result); | |
5307 | if (suffix_match == MATCH_YES) | |
5308 | /* Need to get the eos now. */ | |
5309 | found_match = gfc_match_eos (); | |
5310 | else | |
5311 | found_match = suffix_match; | |
6de9cd9a DN |
5312 | } |
5313 | ||
a8b3b0b6 CR |
5314 | if(found_match != MATCH_YES) |
5315 | m = MATCH_ERROR; | |
6de9cd9a DN |
5316 | else |
5317 | { | |
a8b3b0b6 CR |
5318 | /* Make changes to the symbol. */ |
5319 | m = MATCH_ERROR; | |
f5acf0f2 | 5320 | |
524af0d6 | 5321 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 5322 | goto cleanup; |
f5acf0f2 | 5323 | |
524af0d6 JB |
5324 | if (!gfc_missing_attr (&sym->attr, NULL) |
5325 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
a8b3b0b6 | 5326 | goto cleanup; |
6de9cd9a | 5327 | |
a99d95a2 | 5328 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5329 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5330 | sym->declared_at = old_loc; |
5331 | if (current_ts.type != BT_UNKNOWN) | |
5332 | current_ts.kind = -1; | |
5333 | else | |
5334 | current_ts.kind = 0; | |
1c8bcdf7 | 5335 | |
a8b3b0b6 CR |
5336 | if (result == NULL) |
5337 | { | |
6de7294f | 5338 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5339 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5340 | goto cleanup; |
a8b3b0b6 CR |
5341 | sym->result = sym; |
5342 | } | |
5343 | else | |
5344 | { | |
6de7294f | 5345 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5346 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5347 | goto cleanup; |
a8b3b0b6 CR |
5348 | sym->result = result; |
5349 | } | |
5350 | ||
c3005b0f DK |
5351 | /* Warn if this procedure has the same name as an intrinsic. */ |
5352 | warn_intrinsic_shadow (sym, true); | |
5353 | ||
a8b3b0b6 CR |
5354 | return MATCH_YES; |
5355 | } | |
6de9cd9a DN |
5356 | |
5357 | cleanup: | |
63645982 | 5358 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5359 | return m; |
5360 | } | |
5361 | ||
636dff67 SK |
5362 | |
5363 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5364 | pass the name of the entry, rather than the gfc_current_block name, and | |
5365 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5366 | |
5367 | static bool | |
3a43b5b3 TB |
5368 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5369 | locus *where) | |
68ea355b PT |
5370 | { |
5371 | gfc_gsymbol *s; | |
32e8bb8e | 5372 | enum gfc_symbol_type type; |
68ea355b | 5373 | |
7389bce6 | 5374 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 5375 | |
f11de7c5 TB |
5376 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5377 | name is a global identifier. */ | |
5378 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 5379 | { |
f11de7c5 TB |
5380 | s = gfc_get_gsymbol (name); |
5381 | ||
5382 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5383 | { | |
3a43b5b3 | 5384 | gfc_global_used (s, where); |
f11de7c5 TB |
5385 | return false; |
5386 | } | |
5387 | else | |
5388 | { | |
5389 | s->type = type; | |
77f8682b | 5390 | s->sym_name = name; |
3a43b5b3 | 5391 | s->where = *where; |
f11de7c5 TB |
5392 | s->defined = 1; |
5393 | s->ns = gfc_current_ns; | |
5394 | } | |
68ea355b | 5395 | } |
f11de7c5 TB |
5396 | |
5397 | /* Don't add the symbol multiple times. */ | |
5398 | if (binding_label | |
5399 | && (!gfc_notification_std (GFC_STD_F2008) | |
5400 | || strcmp (name, binding_label) != 0)) | |
5401 | { | |
5402 | s = gfc_get_gsymbol (binding_label); | |
5403 | ||
5404 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5405 | { | |
3a43b5b3 | 5406 | gfc_global_used (s, where); |
f11de7c5 TB |
5407 | return false; |
5408 | } | |
5409 | else | |
5410 | { | |
5411 | s->type = type; | |
77f8682b | 5412 | s->sym_name = name; |
f11de7c5 | 5413 | s->binding_label = binding_label; |
3a43b5b3 | 5414 | s->where = *where; |
f11de7c5 TB |
5415 | s->defined = 1; |
5416 | s->ns = gfc_current_ns; | |
5417 | } | |
5418 | } | |
5419 | ||
5420 | return true; | |
68ea355b | 5421 | } |
6de9cd9a | 5422 | |
636dff67 | 5423 | |
6de9cd9a DN |
5424 | /* Match an ENTRY statement. */ |
5425 | ||
5426 | match | |
5427 | gfc_match_entry (void) | |
5428 | { | |
3d79abbd PB |
5429 | gfc_symbol *proc; |
5430 | gfc_symbol *result; | |
5431 | gfc_symbol *entry; | |
6de9cd9a DN |
5432 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5433 | gfc_compile_state state; | |
5434 | match m; | |
3d79abbd | 5435 | gfc_entry_list *el; |
c96cfa49 | 5436 | locus old_loc; |
1a492601 | 5437 | bool module_procedure; |
bc3e7a8c TB |
5438 | char peek_char; |
5439 | match is_bind_c; | |
6de9cd9a DN |
5440 | |
5441 | m = gfc_match_name (name); | |
5442 | if (m != MATCH_YES) | |
5443 | return m; | |
5444 | ||
524af0d6 | 5445 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
5446 | return MATCH_ERROR; |
5447 | ||
3d79abbd | 5448 | state = gfc_current_state (); |
4c93c95a | 5449 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5450 | { |
4c93c95a FXC |
5451 | switch (state) |
5452 | { | |
5453 | case COMP_PROGRAM: | |
5454 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5455 | break; | |
5456 | case COMP_MODULE: | |
5457 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5458 | break; | |
5459 | case COMP_BLOCK_DATA: | |
636dff67 SK |
5460 | gfc_error ("ENTRY statement at %C cannot appear within " |
5461 | "a BLOCK DATA"); | |
4c93c95a FXC |
5462 | break; |
5463 | case COMP_INTERFACE: | |
636dff67 SK |
5464 | gfc_error ("ENTRY statement at %C cannot appear within " |
5465 | "an INTERFACE"); | |
4c93c95a FXC |
5466 | break; |
5467 | case COMP_DERIVED: | |
636dff67 SK |
5468 | gfc_error ("ENTRY statement at %C cannot appear within " |
5469 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5470 | break; |
5471 | case COMP_IF: | |
636dff67 SK |
5472 | gfc_error ("ENTRY statement at %C cannot appear within " |
5473 | "an IF-THEN block"); | |
4c93c95a FXC |
5474 | break; |
5475 | case COMP_DO: | |
8c6a85e3 | 5476 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5477 | gfc_error ("ENTRY statement at %C cannot appear within " |
5478 | "a DO block"); | |
4c93c95a FXC |
5479 | break; |
5480 | case COMP_SELECT: | |
636dff67 SK |
5481 | gfc_error ("ENTRY statement at %C cannot appear within " |
5482 | "a SELECT block"); | |
4c93c95a FXC |
5483 | break; |
5484 | case COMP_FORALL: | |
636dff67 SK |
5485 | gfc_error ("ENTRY statement at %C cannot appear within " |
5486 | "a FORALL block"); | |
4c93c95a FXC |
5487 | break; |
5488 | case COMP_WHERE: | |
636dff67 SK |
5489 | gfc_error ("ENTRY statement at %C cannot appear within " |
5490 | "a WHERE block"); | |
4c93c95a FXC |
5491 | break; |
5492 | case COMP_CONTAINS: | |
636dff67 SK |
5493 | gfc_error ("ENTRY statement at %C cannot appear within " |
5494 | "a contained subprogram"); | |
4c93c95a FXC |
5495 | break; |
5496 | default: | |
5497 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5498 | } | |
3d79abbd PB |
5499 | return MATCH_ERROR; |
5500 | } | |
5501 | ||
1a492601 | 5502 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5503 | && gfc_current_ns->parent->proc_name |
5504 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5505 | == FL_MODULE; | |
1a492601 | 5506 | |
3d79abbd PB |
5507 | if (gfc_current_ns->parent != NULL |
5508 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5509 | && !module_procedure) |
3d79abbd PB |
5510 | { |
5511 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5512 | "contained procedure"); | |
5513 | return MATCH_ERROR; | |
5514 | } | |
5515 | ||
1a492601 PT |
5516 | /* Module function entries need special care in get_proc_name |
5517 | because previous references within the function will have | |
5518 | created symbols attached to the current namespace. */ | |
5519 | if (get_proc_name (name, &entry, | |
5520 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5521 | && module_procedure)) |
6de9cd9a DN |
5522 | return MATCH_ERROR; |
5523 | ||
3d79abbd PB |
5524 | proc = gfc_current_block (); |
5525 | ||
bc3e7a8c TB |
5526 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5527 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5528 | not allowed for procedures. */ | |
5529 | if (entry->attr.is_bind_c == 1) | |
5530 | { | |
5531 | entry->attr.is_bind_c = 0; | |
5532 | if (entry->old_symbol != NULL) | |
5533 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5534 | "variables or common blocks", | |
5535 | &(entry->old_symbol->declared_at)); | |
5536 | else | |
5537 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5538 | "variables or common blocks", &gfc_current_locus); | |
5539 | } | |
f5acf0f2 | 5540 | |
bc3e7a8c TB |
5541 | /* Check what next non-whitespace character is so we can tell if there |
5542 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 5543 | old_loc = gfc_current_locus; |
bc3e7a8c | 5544 | gfc_gobble_whitespace (); |
8fc541d3 | 5545 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5546 | |
3d79abbd | 5547 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5548 | { |
6de9cd9a DN |
5549 | m = gfc_match_formal_arglist (entry, 0, 1); |
5550 | if (m != MATCH_YES) | |
5551 | return MATCH_ERROR; | |
5552 | ||
1eabf70a TB |
5553 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5554 | never be an internal procedure. */ | |
5555 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5556 | if (is_bind_c == MATCH_ERROR) |
5557 | return MATCH_ERROR; | |
5558 | if (is_bind_c == MATCH_YES) | |
5559 | { | |
5560 | if (peek_char != '(') | |
5561 | { | |
5562 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5563 | return MATCH_ERROR; | |
5564 | } | |
524af0d6 JB |
5565 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5566 | &(entry->declared_at), 1)) | |
bc3e7a8c TB |
5567 | return MATCH_ERROR; |
5568 | } | |
5569 | ||
f11de7c5 | 5570 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
5571 | && !add_global_entry (name, entry->binding_label, true, |
5572 | &old_loc)) | |
f11de7c5 TB |
5573 | return MATCH_ERROR; |
5574 | ||
5575 | /* An entry in a subroutine. */ | |
524af0d6 JB |
5576 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5577 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 5578 | return MATCH_ERROR; |
3d79abbd PB |
5579 | } |
5580 | else | |
5581 | { | |
c96cfa49 | 5582 | /* An entry in a function. |
636dff67 SK |
5583 | We need to take special care because writing |
5584 | ENTRY f() | |
5585 | as | |
5586 | ENTRY f | |
5587 | is allowed, whereas | |
5588 | ENTRY f() RESULT (r) | |
5589 | can't be written as | |
5590 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
5591 | if (gfc_match_eos () == MATCH_YES) |
5592 | { | |
5593 | gfc_current_locus = old_loc; | |
5594 | /* Match the empty argument list, and add the interface to | |
5595 | the symbol. */ | |
5596 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5597 | } | |
5598 | else | |
5599 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5600 | ||
6de9cd9a DN |
5601 | if (m != MATCH_YES) |
5602 | return MATCH_ERROR; | |
5603 | ||
6de9cd9a DN |
5604 | result = NULL; |
5605 | ||
5606 | if (gfc_match_eos () == MATCH_YES) | |
5607 | { | |
524af0d6 JB |
5608 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5609 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
5610 | return MATCH_ERROR; |
5611 | ||
d198b59a | 5612 | entry->result = entry; |
6de9cd9a DN |
5613 | } |
5614 | else | |
5615 | { | |
bc3e7a8c | 5616 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5617 | if (m == MATCH_NO) |
5618 | gfc_syntax_error (ST_ENTRY); | |
5619 | if (m != MATCH_YES) | |
5620 | return MATCH_ERROR; | |
5621 | ||
bc3e7a8c TB |
5622 | if (result) |
5623 | { | |
524af0d6 JB |
5624 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5625 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5626 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
5627 | return MATCH_ERROR; |
5628 | entry->result = result; | |
5629 | } | |
5630 | else | |
5631 | { | |
524af0d6 JB |
5632 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5633 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
5634 | return MATCH_ERROR; |
5635 | entry->result = entry; | |
5636 | } | |
6de9cd9a | 5637 | } |
f11de7c5 TB |
5638 | |
5639 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
5640 | && !add_global_entry (name, entry->binding_label, false, |
5641 | &old_loc)) | |
f11de7c5 | 5642 | return MATCH_ERROR; |
6de9cd9a DN |
5643 | } |
5644 | ||
5645 | if (gfc_match_eos () != MATCH_YES) | |
5646 | { | |
5647 | gfc_syntax_error (ST_ENTRY); | |
5648 | return MATCH_ERROR; | |
5649 | } | |
5650 | ||
3d79abbd PB |
5651 | entry->attr.recursive = proc->attr.recursive; |
5652 | entry->attr.elemental = proc->attr.elemental; | |
5653 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5654 | |
3d79abbd PB |
5655 | el = gfc_get_entry_list (); |
5656 | el->sym = entry; | |
5657 | el->next = gfc_current_ns->entries; | |
5658 | gfc_current_ns->entries = el; | |
5659 | if (el->next) | |
5660 | el->id = el->next->id + 1; | |
5661 | else | |
5662 | el->id = 1; | |
6de9cd9a | 5663 | |
3d79abbd PB |
5664 | new_st.op = EXEC_ENTRY; |
5665 | new_st.ext.entry = el; | |
5666 | ||
5667 | return MATCH_YES; | |
6de9cd9a DN |
5668 | } |
5669 | ||
5670 | ||
5671 | /* Match a subroutine statement, including optional prefixes. */ | |
5672 | ||
5673 | match | |
5674 | gfc_match_subroutine (void) | |
5675 | { | |
5676 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5677 | gfc_symbol *sym; | |
5678 | match m; | |
a8b3b0b6 CR |
5679 | match is_bind_c; |
5680 | char peek_char; | |
1eabf70a | 5681 | bool allow_binding_name; |
6de9cd9a DN |
5682 | |
5683 | if (gfc_current_state () != COMP_NONE | |
5684 | && gfc_current_state () != COMP_INTERFACE | |
5685 | && gfc_current_state () != COMP_CONTAINS) | |
5686 | return MATCH_NO; | |
5687 | ||
1c8bcdf7 | 5688 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5689 | if (m != MATCH_YES) |
5690 | return m; | |
5691 | ||
5692 | m = gfc_match ("subroutine% %n", name); | |
5693 | if (m != MATCH_YES) | |
5694 | return m; | |
5695 | ||
1a492601 | 5696 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5697 | return MATCH_ERROR; |
3070bab4 | 5698 | |
7fcd5ad5 TB |
5699 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5700 | the symbol existed before. */ | |
5701 | sym->declared_at = gfc_current_locus; | |
5702 | ||
524af0d6 | 5703 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5704 | sym = sym->result; |
5705 | ||
6de9cd9a DN |
5706 | gfc_new_block = sym; |
5707 | ||
a8b3b0b6 | 5708 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5709 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5710 | gfc_gobble_whitespace (); |
8fc541d3 | 5711 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 5712 | |
524af0d6 | 5713 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
5714 | return MATCH_ERROR; |
5715 | ||
5716 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5717 | return MATCH_ERROR; | |
5718 | ||
a8b3b0b6 CR |
5719 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5720 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5721 | not allowed for procedures. */ | |
5722 | if (sym->attr.is_bind_c == 1) | |
5723 | { | |
5724 | sym->attr.is_bind_c = 0; | |
5725 | if (sym->old_symbol != NULL) | |
5726 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5727 | "variables or common blocks", | |
5728 | &(sym->old_symbol->declared_at)); | |
5729 | else | |
5730 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5731 | "variables or common blocks", &gfc_current_locus); | |
5732 | } | |
1eabf70a TB |
5733 | |
5734 | /* C binding names are not allowed for internal procedures. */ | |
5735 | if (gfc_current_state () == COMP_CONTAINS | |
5736 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5737 | allow_binding_name = false; | |
5738 | else | |
5739 | allow_binding_name = true; | |
5740 | ||
a8b3b0b6 CR |
5741 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5742 | so, then we need to make sure it's all correct. If it doesn't, | |
5743 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5744 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5745 | if (is_bind_c == MATCH_ERROR) |
5746 | { | |
5747 | /* There was an attempt at the bind(c), but it was wrong. An | |
5748 | error message should have been printed w/in the gfc_match_bind_c | |
5749 | so here we'll just return the MATCH_ERROR. */ | |
5750 | return MATCH_ERROR; | |
5751 | } | |
5752 | ||
5753 | if (is_bind_c == MATCH_YES) | |
5754 | { | |
1eabf70a | 5755 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 5756 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5757 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
5758 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
5759 | "at %L may not be specified for an internal " | |
5760 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
5761 | return MATCH_ERROR; |
5762 | ||
a8b3b0b6 CR |
5763 | if (peek_char != '(') |
5764 | { | |
5765 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5766 | return MATCH_ERROR; | |
5767 | } | |
524af0d6 JB |
5768 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
5769 | &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
5770 | return MATCH_ERROR; |
5771 | } | |
f5acf0f2 | 5772 | |
6de9cd9a DN |
5773 | if (gfc_match_eos () != MATCH_YES) |
5774 | { | |
5775 | gfc_syntax_error (ST_SUBROUTINE); | |
5776 | return MATCH_ERROR; | |
5777 | } | |
5778 | ||
524af0d6 | 5779 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6de9cd9a DN |
5780 | return MATCH_ERROR; |
5781 | ||
c3005b0f DK |
5782 | /* Warn if it has the same name as an intrinsic. */ |
5783 | warn_intrinsic_shadow (sym, false); | |
5784 | ||
6de9cd9a DN |
5785 | return MATCH_YES; |
5786 | } | |
5787 | ||
5788 | ||
3b37ccd4 FXC |
5789 | /* Check that the NAME identifier in a BIND attribute or statement |
5790 | is conform to C identifier rules. */ | |
5791 | ||
5792 | match | |
5793 | check_bind_name_identifier (char **name) | |
5794 | { | |
5795 | char *n = *name, *p; | |
5796 | ||
5797 | /* Remove leading spaces. */ | |
5798 | while (*n == ' ') | |
5799 | n++; | |
5800 | ||
5801 | /* On an empty string, free memory and set name to NULL. */ | |
5802 | if (*n == '\0') | |
5803 | { | |
5804 | free (*name); | |
5805 | *name = NULL; | |
5806 | return MATCH_YES; | |
5807 | } | |
5808 | ||
5809 | /* Remove trailing spaces. */ | |
5810 | p = n + strlen(n) - 1; | |
5811 | while (*p == ' ') | |
5812 | *(p--) = '\0'; | |
5813 | ||
5814 | /* Insert the identifier into the symbol table. */ | |
5815 | p = xstrdup (n); | |
5816 | free (*name); | |
5817 | *name = p; | |
5818 | ||
5819 | /* Now check that identifier is valid under C rules. */ | |
5820 | if (ISDIGIT (*p)) | |
5821 | { | |
5822 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
5823 | return MATCH_ERROR; | |
5824 | } | |
5825 | ||
5826 | for (; *p; p++) | |
5827 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
5828 | { | |
5829 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
5830 | return MATCH_ERROR; | |
5831 | } | |
5832 | ||
5833 | return MATCH_YES; | |
5834 | } | |
5835 | ||
5836 | ||
a8b3b0b6 CR |
5837 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5838 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 5839 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
5840 | encounter the BIND(C) before the declaration itself. Return |
5841 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5842 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5843 | or MATCH_YES if the specifier was correct and the binding label and | |
5844 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
5845 | current_ts. If allow_binding_name is false, no binding name may be |
5846 | given. */ | |
a8b3b0b6 CR |
5847 | |
5848 | match | |
1eabf70a | 5849 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 5850 | { |
3b37ccd4 FXC |
5851 | char *binding_label = NULL; |
5852 | gfc_expr *e = NULL; | |
a8b3b0b6 | 5853 | |
f5acf0f2 | 5854 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
5855 | specifier or not. */ |
5856 | has_name_equals = 0; | |
5857 | ||
a8b3b0b6 CR |
5858 | /* This much we have to be able to match, in this order, if |
5859 | there is a bind(c) label. */ | |
5860 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5861 | return MATCH_NO; | |
5862 | ||
5863 | /* Now see if there is a binding label, or if we've reached the | |
5864 | end of the bind(c) attribute without one. */ | |
5865 | if (gfc_match_char (',') == MATCH_YES) | |
5866 | { | |
5867 | if (gfc_match (" name = ") != MATCH_YES) | |
5868 | { | |
5869 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5870 | "at %C"); | |
5871 | /* should give an error message here */ | |
5872 | return MATCH_ERROR; | |
5873 | } | |
5874 | ||
5875 | has_name_equals = 1; | |
5876 | ||
3b37ccd4 FXC |
5877 | if (gfc_match_init_expr (&e) != MATCH_YES) |
5878 | { | |
5879 | gfc_free_expr (e); | |
5880 | return MATCH_ERROR; | |
5881 | } | |
f5acf0f2 | 5882 | |
3b37ccd4 | 5883 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 5884 | { |
3b37ccd4 FXC |
5885 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
5886 | gfc_free_expr (e); | |
5887 | return MATCH_ERROR; | |
a8b3b0b6 | 5888 | } |
3b37ccd4 FXC |
5889 | |
5890 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
5891 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 5892 | { |
3b37ccd4 FXC |
5893 | gfc_error ("NAME= specifier at %C should be a scalar of " |
5894 | "default character kind"); | |
5895 | gfc_free_expr(e); | |
5896 | return MATCH_ERROR; | |
a8b3b0b6 | 5897 | } |
3b37ccd4 FXC |
5898 | |
5899 | // Get a C string from the Fortran string constant | |
5900 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
5901 | e->value.character.length); | |
5902 | gfc_free_expr(e); | |
5903 | ||
5904 | // Check that it is valid (old gfc_match_name_C) | |
5905 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
5906 | return MATCH_ERROR; | |
5907 | } | |
a8b3b0b6 CR |
5908 | |
5909 | /* Get the required right paren. */ | |
5910 | if (gfc_match_char (')') != MATCH_YES) | |
5911 | { | |
5912 | gfc_error ("Missing closing paren for binding label at %C"); | |
5913 | return MATCH_ERROR; | |
5914 | } | |
5915 | ||
1eabf70a TB |
5916 | if (has_name_equals && !allow_binding_name) |
5917 | { | |
5918 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5919 | return MATCH_ERROR; | |
5920 | } | |
5921 | ||
5922 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5923 | { | |
5924 | gfc_error ("For dummy procedure %s, no binding name is " | |
5925 | "allowed in BIND(C) at %C", sym->name); | |
5926 | return MATCH_ERROR; | |
5927 | } | |
5928 | ||
5929 | ||
a8b3b0b6 CR |
5930 | /* Save the binding label to the symbol. If sym is null, we're |
5931 | probably matching the typespec attributes of a declaration and | |
5932 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 5933 | if (binding_label) |
a8b3b0b6 CR |
5934 | { |
5935 | if (sym != NULL) | |
62603fae | 5936 | sym->binding_label = binding_label; |
a8b3b0b6 | 5937 | else |
62603fae | 5938 | curr_binding_label = binding_label; |
a8b3b0b6 | 5939 | } |
1eabf70a | 5940 | else if (allow_binding_name) |
a8b3b0b6 CR |
5941 | { |
5942 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
5943 | can set the label for it here. |
5944 | If name="" or allow_binding_name is false, no C binding name is | |
5945 | created. */ | |
a8b3b0b6 | 5946 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 5947 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 5948 | } |
9e1d712c | 5949 | |
129d15a3 JW |
5950 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5951 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
5952 | { |
5953 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5954 | return MATCH_ERROR; | |
5955 | } | |
5956 | ||
a8b3b0b6 CR |
5957 | return MATCH_YES; |
5958 | } | |
5959 | ||
5960 | ||
1f2959f0 | 5961 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
5962 | |
5963 | static int | |
5964 | contained_procedure (void) | |
5965 | { | |
083de129 | 5966 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 5967 | |
083de129 TB |
5968 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5969 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5970 | return 1; | |
ddc9ce91 TS |
5971 | |
5972 | return 0; | |
5973 | } | |
5974 | ||
d51347f9 | 5975 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
5976 | interoperable with the corresponding C enumeration type, making |
5977 | sure that -fshort-enums is honored. */ | |
5978 | ||
5979 | static void | |
5980 | set_enum_kind(void) | |
5981 | { | |
5982 | enumerator_history *current_history = NULL; | |
5983 | int kind; | |
5984 | int i; | |
5985 | ||
5986 | if (max_enum == NULL || enum_history == NULL) | |
5987 | return; | |
5988 | ||
cab129d1 | 5989 | if (!flag_short_enums) |
d51347f9 TB |
5990 | return; |
5991 | ||
25d8f0a2 TS |
5992 | i = 0; |
5993 | do | |
5994 | { | |
5995 | kind = gfc_integer_kinds[i++].kind; | |
5996 | } | |
d51347f9 | 5997 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
5998 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5999 | kind) != ARITH_OK); | |
6000 | ||
6001 | current_history = enum_history; | |
6002 | while (current_history != NULL) | |
6003 | { | |
6004 | current_history->sym->ts.kind = kind; | |
6005 | current_history = current_history->next; | |
6006 | } | |
6007 | } | |
6008 | ||
636dff67 | 6009 | |
6de9cd9a | 6010 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
6011 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6012 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
6013 | |
6014 | match | |
636dff67 | 6015 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
6016 | { |
6017 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6018 | gfc_compile_state state; | |
6019 | locus old_loc; | |
6020 | const char *block_name; | |
6021 | const char *target; | |
ddc9ce91 | 6022 | int eos_ok; |
6de9cd9a | 6023 | match m; |
0cab6b73 TK |
6024 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6025 | gfc_namespace **nsp; | |
6de9cd9a | 6026 | |
63645982 | 6027 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6028 | if (gfc_match ("end") != MATCH_YES) |
6029 | return MATCH_NO; | |
6030 | ||
6031 | state = gfc_current_state (); | |
636dff67 SK |
6032 | block_name = gfc_current_block () == NULL |
6033 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 6034 | |
03af1e4c | 6035 | switch (state) |
6de9cd9a | 6036 | { |
03af1e4c DK |
6037 | case COMP_ASSOCIATE: |
6038 | case COMP_BLOCK: | |
3a1fd30c | 6039 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
6040 | block_name = NULL; |
6041 | break; | |
6042 | ||
6043 | case COMP_CONTAINS: | |
6044 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6045 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6046 | block_name = gfc_state_stack->previous->sym == NULL |
6047 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
6048 | break; |
6049 | ||
6050 | default: | |
6051 | break; | |
6de9cd9a DN |
6052 | } |
6053 | ||
6054 | switch (state) | |
6055 | { | |
6056 | case COMP_NONE: | |
6057 | case COMP_PROGRAM: | |
6058 | *st = ST_END_PROGRAM; | |
6059 | target = " program"; | |
ddc9ce91 | 6060 | eos_ok = 1; |
6de9cd9a DN |
6061 | break; |
6062 | ||
6063 | case COMP_SUBROUTINE: | |
6064 | *st = ST_END_SUBROUTINE; | |
6065 | target = " subroutine"; | |
ddc9ce91 | 6066 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6067 | break; |
6068 | ||
6069 | case COMP_FUNCTION: | |
6070 | *st = ST_END_FUNCTION; | |
6071 | target = " function"; | |
ddc9ce91 | 6072 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6073 | break; |
6074 | ||
6075 | case COMP_BLOCK_DATA: | |
6076 | *st = ST_END_BLOCK_DATA; | |
6077 | target = " block data"; | |
ddc9ce91 | 6078 | eos_ok = 1; |
6de9cd9a DN |
6079 | break; |
6080 | ||
6081 | case COMP_MODULE: | |
6082 | *st = ST_END_MODULE; | |
6083 | target = " module"; | |
ddc9ce91 | 6084 | eos_ok = 1; |
6de9cd9a DN |
6085 | break; |
6086 | ||
6087 | case COMP_INTERFACE: | |
6088 | *st = ST_END_INTERFACE; | |
6089 | target = " interface"; | |
ddc9ce91 | 6090 | eos_ok = 0; |
6de9cd9a DN |
6091 | break; |
6092 | ||
6093 | case COMP_DERIVED: | |
30b608eb | 6094 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6095 | *st = ST_END_TYPE; |
6096 | target = " type"; | |
ddc9ce91 | 6097 | eos_ok = 0; |
6de9cd9a DN |
6098 | break; |
6099 | ||
03af1e4c DK |
6100 | case COMP_ASSOCIATE: |
6101 | *st = ST_END_ASSOCIATE; | |
6102 | target = " associate"; | |
6103 | eos_ok = 0; | |
6104 | break; | |
6105 | ||
9abe5e56 DK |
6106 | case COMP_BLOCK: |
6107 | *st = ST_END_BLOCK; | |
6108 | target = " block"; | |
6109 | eos_ok = 0; | |
6110 | break; | |
6111 | ||
6de9cd9a DN |
6112 | case COMP_IF: |
6113 | *st = ST_ENDIF; | |
6114 | target = " if"; | |
ddc9ce91 | 6115 | eos_ok = 0; |
6de9cd9a DN |
6116 | break; |
6117 | ||
6118 | case COMP_DO: | |
8c6a85e3 | 6119 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6120 | *st = ST_ENDDO; |
6121 | target = " do"; | |
ddc9ce91 | 6122 | eos_ok = 0; |
6de9cd9a DN |
6123 | break; |
6124 | ||
d0a4a61c TB |
6125 | case COMP_CRITICAL: |
6126 | *st = ST_END_CRITICAL; | |
6127 | target = " critical"; | |
6128 | eos_ok = 0; | |
6129 | break; | |
6130 | ||
6de9cd9a | 6131 | case COMP_SELECT: |
cf2b3c22 | 6132 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6133 | *st = ST_END_SELECT; |
6134 | target = " select"; | |
ddc9ce91 | 6135 | eos_ok = 0; |
6de9cd9a DN |
6136 | break; |
6137 | ||
6138 | case COMP_FORALL: | |
6139 | *st = ST_END_FORALL; | |
6140 | target = " forall"; | |
ddc9ce91 | 6141 | eos_ok = 0; |
6de9cd9a DN |
6142 | break; |
6143 | ||
6144 | case COMP_WHERE: | |
6145 | *st = ST_END_WHERE; | |
6146 | target = " where"; | |
ddc9ce91 | 6147 | eos_ok = 0; |
6de9cd9a DN |
6148 | break; |
6149 | ||
25d8f0a2 TS |
6150 | case COMP_ENUM: |
6151 | *st = ST_END_ENUM; | |
6152 | target = " enum"; | |
6153 | eos_ok = 0; | |
6154 | last_initializer = NULL; | |
6155 | set_enum_kind (); | |
6156 | gfc_free_enum_history (); | |
6157 | break; | |
6158 | ||
6de9cd9a DN |
6159 | default: |
6160 | gfc_error ("Unexpected END statement at %C"); | |
6161 | goto cleanup; | |
6162 | } | |
6163 | ||
3a43b5b3 | 6164 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6165 | if (gfc_match_eos () == MATCH_YES) |
6166 | { | |
272001a2 TB |
6167 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6168 | { | |
524af0d6 JB |
6169 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6170 | "instead of %s statement at %L", | |
6171 | gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6172 | goto cleanup; |
6173 | } | |
6174 | else if (!eos_ok) | |
6de9cd9a | 6175 | { |
66e4ab31 | 6176 | /* We would have required END [something]. */ |
59ce85b5 TS |
6177 | gfc_error ("%s statement expected at %L", |
6178 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6179 | goto cleanup; |
6180 | } | |
6181 | ||
6182 | return MATCH_YES; | |
6183 | } | |
6184 | ||
6185 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6186 | if (gfc_match (target) != MATCH_YES) | |
6187 | { | |
3a43b5b3 TB |
6188 | gfc_error ("Expecting %s statement at %L", gfc_ascii_statement (*st), |
6189 | &old_loc); | |
6de9cd9a DN |
6190 | goto cleanup; |
6191 | } | |
6192 | ||
3a43b5b3 | 6193 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6194 | /* If we're at the end, make sure a block name wasn't required. */ |
6195 | if (gfc_match_eos () == MATCH_YES) | |
6196 | { | |
6197 | ||
690af379 | 6198 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6199 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6200 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6201 | return MATCH_YES; |
6202 | ||
9abe5e56 | 6203 | if (!block_name) |
6de9cd9a DN |
6204 | return MATCH_YES; |
6205 | ||
3a43b5b3 TB |
6206 | gfc_error ("Expected block name of '%s' in %s statement at %L", |
6207 | block_name, gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6208 | |
6209 | return MATCH_ERROR; | |
6210 | } | |
6211 | ||
6212 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6213 | if (*st == ST_END_INTERFACE) | |
6214 | return gfc_match_end_interface (); | |
6215 | ||
66e4ab31 SK |
6216 | /* We haven't hit the end of statement, so what is left must be an |
6217 | end-name. */ | |
6de9cd9a DN |
6218 | m = gfc_match_space (); |
6219 | if (m == MATCH_YES) | |
6220 | m = gfc_match_name (name); | |
6221 | ||
6222 | if (m == MATCH_NO) | |
6223 | gfc_error ("Expected terminating name at %C"); | |
6224 | if (m != MATCH_YES) | |
6225 | goto cleanup; | |
6226 | ||
6227 | if (block_name == NULL) | |
6228 | goto syntax; | |
6229 | ||
3070bab4 | 6230 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a DN |
6231 | { |
6232 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6233 | gfc_ascii_statement (*st)); | |
6234 | goto cleanup; | |
6235 | } | |
3070bab4 JW |
6236 | /* Procedure pointer as function result. */ |
6237 | else if (strcmp (block_name, "ppr@") == 0 | |
6238 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6239 | { | |
6240 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6241 | gfc_current_block ()->ns->proc_name->name, | |
6242 | gfc_ascii_statement (*st)); | |
6243 | goto cleanup; | |
6244 | } | |
6de9cd9a DN |
6245 | |
6246 | if (gfc_match_eos () == MATCH_YES) | |
6247 | return MATCH_YES; | |
6248 | ||
6249 | syntax: | |
6250 | gfc_syntax_error (*st); | |
6251 | ||
6252 | cleanup: | |
63645982 | 6253 | gfc_current_locus = old_loc; |
0cab6b73 TK |
6254 | |
6255 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6256 | Remove it from the parent namespace's sibling list. */ | |
6257 | ||
6258 | if (state == COMP_BLOCK) | |
6259 | { | |
6260 | parent_ns = gfc_current_ns->parent; | |
6261 | ||
6262 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6263 | ||
6264 | prev_ns = NULL; | |
6265 | ns = *nsp; | |
6266 | while (ns) | |
6267 | { | |
6268 | if (ns == gfc_current_ns) | |
6269 | { | |
6270 | if (prev_ns == NULL) | |
6271 | *nsp = NULL; | |
6272 | else | |
6273 | prev_ns->sibling = ns->sibling; | |
6274 | } | |
6275 | prev_ns = ns; | |
6276 | ns = ns->sibling; | |
6277 | } | |
6278 | ||
6279 | gfc_free_namespace (gfc_current_ns); | |
6280 | gfc_current_ns = parent_ns; | |
6281 | } | |
6282 | ||
6de9cd9a DN |
6283 | return MATCH_ERROR; |
6284 | } | |
6285 | ||
6286 | ||
6287 | ||
6288 | /***************** Attribute declaration statements ****************/ | |
6289 | ||
6290 | /* Set the attribute of a single variable. */ | |
6291 | ||
6292 | static match | |
6293 | attr_decl1 (void) | |
6294 | { | |
6295 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6296 | gfc_array_spec *as; | |
6297 | gfc_symbol *sym; | |
6298 | locus var_locus; | |
6299 | match m; | |
6300 | ||
6301 | as = NULL; | |
6302 | ||
6303 | m = gfc_match_name (name); | |
6304 | if (m != MATCH_YES) | |
6305 | goto cleanup; | |
6306 | ||
08a6b8e0 | 6307 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6308 | return MATCH_ERROR; |
6309 | ||
524af0d6 | 6310 | if (!check_function_name (name)) |
bb9de0c4 JW |
6311 | { |
6312 | m = MATCH_ERROR; | |
6313 | goto cleanup; | |
6314 | } | |
f5acf0f2 | 6315 | |
63645982 | 6316 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6317 | |
6318 | /* Deal with possible array specification for certain attributes. */ | |
6319 | if (current_attr.dimension | |
be59db2d | 6320 | || current_attr.codimension |
6de9cd9a DN |
6321 | || current_attr.allocatable |
6322 | || current_attr.pointer | |
6323 | || current_attr.target) | |
6324 | { | |
be59db2d TB |
6325 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6326 | !current_attr.dimension | |
6327 | && !current_attr.pointer | |
6328 | && !current_attr.target); | |
6de9cd9a DN |
6329 | if (m == MATCH_ERROR) |
6330 | goto cleanup; | |
6331 | ||
6332 | if (current_attr.dimension && m == MATCH_NO) | |
6333 | { | |
636dff67 SK |
6334 | gfc_error ("Missing array specification at %L in DIMENSION " |
6335 | "statement", &var_locus); | |
6de9cd9a DN |
6336 | m = MATCH_ERROR; |
6337 | goto cleanup; | |
6338 | } | |
6339 | ||
1283ab12 TB |
6340 | if (current_attr.dimension && sym->value) |
6341 | { | |
6342 | gfc_error ("Dimensions specified for %s at %L after its " | |
6343 | "initialisation", sym->name, &var_locus); | |
6344 | m = MATCH_ERROR; | |
6345 | goto cleanup; | |
6346 | } | |
6347 | ||
be59db2d TB |
6348 | if (current_attr.codimension && m == MATCH_NO) |
6349 | { | |
6350 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6351 | "statement", &var_locus); | |
6352 | m = MATCH_ERROR; | |
6353 | goto cleanup; | |
6354 | } | |
6355 | ||
6de9cd9a DN |
6356 | if ((current_attr.allocatable || current_attr.pointer) |
6357 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6358 | { | |
636dff67 | 6359 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6360 | m = MATCH_ERROR; |
6361 | goto cleanup; | |
6362 | } | |
6363 | } | |
6364 | ||
2e23972e JW |
6365 | /* Update symbol table. DIMENSION attribute is set in |
6366 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6367 | to the first component, or '_data' field. */ |
d40477b4 | 6368 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6369 | { |
524af0d6 | 6370 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6371 | { |
6372 | m = MATCH_ERROR; | |
6373 | goto cleanup; | |
6374 | } | |
2e23972e JW |
6375 | } |
6376 | else | |
6377 | { | |
be59db2d | 6378 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 6379 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6380 | { |
6381 | m = MATCH_ERROR; | |
6382 | goto cleanup; | |
6383 | } | |
6de9cd9a | 6384 | } |
f5acf0f2 | 6385 | |
528622fd | 6386 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 6387 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
6388 | { |
6389 | m = MATCH_ERROR; | |
6390 | goto cleanup; | |
6391 | } | |
6de9cd9a | 6392 | |
524af0d6 | 6393 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
6394 | { |
6395 | m = MATCH_ERROR; | |
6396 | goto cleanup; | |
6397 | } | |
d51347f9 | 6398 | |
83d890b9 AL |
6399 | if (sym->attr.cray_pointee && sym->as != NULL) |
6400 | { | |
6401 | /* Fix the array spec. */ | |
f5acf0f2 | 6402 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
6403 | if (m == MATCH_ERROR) |
6404 | goto cleanup; | |
6405 | } | |
6de9cd9a | 6406 | |
524af0d6 | 6407 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
6408 | { |
6409 | m = MATCH_ERROR; | |
6410 | goto cleanup; | |
6411 | } | |
6412 | ||
6de9cd9a DN |
6413 | if ((current_attr.external || current_attr.intrinsic) |
6414 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 6415 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
6416 | { |
6417 | m = MATCH_ERROR; | |
6418 | goto cleanup; | |
6419 | } | |
6420 | ||
3070bab4 JW |
6421 | add_hidden_procptr_result (sym); |
6422 | ||
6de9cd9a DN |
6423 | return MATCH_YES; |
6424 | ||
6425 | cleanup: | |
6426 | gfc_free_array_spec (as); | |
6427 | return m; | |
6428 | } | |
6429 | ||
6430 | ||
6431 | /* Generic attribute declaration subroutine. Used for attributes that | |
6432 | just have a list of names. */ | |
6433 | ||
6434 | static match | |
6435 | attr_decl (void) | |
6436 | { | |
6437 | match m; | |
6438 | ||
6439 | /* Gobble the optional double colon, by simply ignoring the result | |
6440 | of gfc_match(). */ | |
6441 | gfc_match (" ::"); | |
6442 | ||
6443 | for (;;) | |
6444 | { | |
6445 | m = attr_decl1 (); | |
6446 | if (m != MATCH_YES) | |
6447 | break; | |
6448 | ||
6449 | if (gfc_match_eos () == MATCH_YES) | |
6450 | { | |
6451 | m = MATCH_YES; | |
6452 | break; | |
6453 | } | |
6454 | ||
6455 | if (gfc_match_char (',') != MATCH_YES) | |
6456 | { | |
6457 | gfc_error ("Unexpected character in variable list at %C"); | |
6458 | m = MATCH_ERROR; | |
6459 | break; | |
6460 | } | |
6461 | } | |
6462 | ||
6463 | return m; | |
6464 | } | |
6465 | ||
6466 | ||
83d890b9 AL |
6467 | /* This routine matches Cray Pointer declarations of the form: |
6468 | pointer ( <pointer>, <pointee> ) | |
6469 | or | |
d51347f9 TB |
6470 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6471 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6472 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6473 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6474 | the pointee. For the statement |
83d890b9 AL |
6475 | pointer (ipt, ar(10)) |
6476 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6477 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6478 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6479 | |
6480 | static match | |
6481 | cray_pointer_decl (void) | |
6482 | { | |
6483 | match m; | |
be59db2d | 6484 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6485 | gfc_symbol *cptr; /* Pointer symbol. */ |
6486 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6487 | locus var_locus; | |
6488 | bool done = false; | |
6489 | ||
6490 | while (!done) | |
6491 | { | |
6492 | if (gfc_match_char ('(') != MATCH_YES) | |
6493 | { | |
6494 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 6495 | return MATCH_ERROR; |
83d890b9 | 6496 | } |
d51347f9 | 6497 | |
83d890b9 AL |
6498 | /* Match pointer. */ |
6499 | var_locus = gfc_current_locus; | |
6500 | gfc_clear_attr (¤t_attr); | |
6501 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6502 | current_ts.type = BT_INTEGER; | |
6503 | current_ts.kind = gfc_index_integer_kind; | |
6504 | ||
d51347f9 | 6505 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6506 | if (m != MATCH_YES) |
6507 | { | |
6508 | gfc_error ("Expected variable name at %C"); | |
6509 | return m; | |
6510 | } | |
d51347f9 | 6511 | |
524af0d6 | 6512 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
6513 | return MATCH_ERROR; |
6514 | ||
d51347f9 | 6515 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6516 | |
6517 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6518 | { | |
6519 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6520 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6521 | } |
6522 | else if (cptr->ts.type != BT_INTEGER) | |
6523 | { | |
e25a0da3 | 6524 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6525 | return MATCH_ERROR; |
6526 | } | |
6527 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6528 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 6529 | " memory addresses require %d bytes", |
636dff67 | 6530 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6531 | |
6532 | if (gfc_match_char (',') != MATCH_YES) | |
6533 | { | |
6534 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6535 | return MATCH_ERROR; |
83d890b9 AL |
6536 | } |
6537 | ||
d51347f9 | 6538 | /* Match Pointee. */ |
83d890b9 AL |
6539 | var_locus = gfc_current_locus; |
6540 | gfc_clear_attr (¤t_attr); | |
6541 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6542 | current_ts.type = BT_UNKNOWN; | |
6543 | current_ts.kind = 0; | |
6544 | ||
6545 | m = gfc_match_symbol (&cpte, 0); | |
6546 | if (m != MATCH_YES) | |
6547 | { | |
6548 | gfc_error ("Expected variable name at %C"); | |
6549 | return m; | |
6550 | } | |
d51347f9 | 6551 | |
83d890b9 | 6552 | /* Check for an optional array spec. */ |
be59db2d | 6553 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6554 | if (m == MATCH_ERROR) |
6555 | { | |
6556 | gfc_free_array_spec (as); | |
6557 | return m; | |
6558 | } | |
6559 | else if (m == MATCH_NO) | |
6560 | { | |
6561 | gfc_free_array_spec (as); | |
6562 | as = NULL; | |
f5acf0f2 | 6563 | } |
83d890b9 | 6564 | |
524af0d6 | 6565 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
6566 | return MATCH_ERROR; |
6567 | ||
6568 | gfc_set_sym_referenced (cpte); | |
6569 | ||
6570 | if (cpte->as == NULL) | |
6571 | { | |
524af0d6 | 6572 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
6573 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6574 | } | |
6575 | else if (as != NULL) | |
6576 | { | |
e25a0da3 | 6577 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6578 | gfc_free_array_spec (as); |
6579 | return MATCH_ERROR; | |
6580 | } | |
f5acf0f2 | 6581 | |
83d890b9 | 6582 | as = NULL; |
f5acf0f2 | 6583 | |
83d890b9 AL |
6584 | if (cpte->as != NULL) |
6585 | { | |
6586 | /* Fix array spec. */ | |
6587 | m = gfc_mod_pointee_as (cpte->as); | |
6588 | if (m == MATCH_ERROR) | |
6589 | return m; | |
f5acf0f2 PT |
6590 | } |
6591 | ||
83d890b9 | 6592 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 6593 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6594 | |
6595 | if (gfc_match_char (')') != MATCH_YES) | |
6596 | { | |
6597 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 6598 | return MATCH_ERROR; |
83d890b9 AL |
6599 | } |
6600 | m = gfc_match_char (','); | |
6601 | if (m != MATCH_YES) | |
6602 | done = true; /* Stop searching for more declarations. */ | |
6603 | ||
6604 | } | |
f5acf0f2 | 6605 | |
83d890b9 AL |
6606 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6607 | || gfc_match_eos () != MATCH_YES) | |
6608 | { | |
6609 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6610 | return MATCH_ERROR; | |
6611 | } | |
6612 | return MATCH_YES; | |
6613 | } | |
6614 | ||
6615 | ||
6de9cd9a DN |
6616 | match |
6617 | gfc_match_external (void) | |
6618 | { | |
6619 | ||
6620 | gfc_clear_attr (¤t_attr); | |
1902704e | 6621 | current_attr.external = 1; |
6de9cd9a DN |
6622 | |
6623 | return attr_decl (); | |
6624 | } | |
6625 | ||
6626 | ||
6de9cd9a DN |
6627 | match |
6628 | gfc_match_intent (void) | |
6629 | { | |
6630 | sym_intent intent; | |
6631 | ||
9abe5e56 DK |
6632 | /* This is not allowed within a BLOCK construct! */ |
6633 | if (gfc_current_state () == COMP_BLOCK) | |
6634 | { | |
6635 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6636 | return MATCH_ERROR; | |
6637 | } | |
6638 | ||
6de9cd9a DN |
6639 | intent = match_intent_spec (); |
6640 | if (intent == INTENT_UNKNOWN) | |
6641 | return MATCH_ERROR; | |
6642 | ||
6643 | gfc_clear_attr (¤t_attr); | |
1902704e | 6644 | current_attr.intent = intent; |
6de9cd9a DN |
6645 | |
6646 | return attr_decl (); | |
6647 | } | |
6648 | ||
6649 | ||
6650 | match | |
6651 | gfc_match_intrinsic (void) | |
6652 | { | |
6653 | ||
6654 | gfc_clear_attr (¤t_attr); | |
1902704e | 6655 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6656 | |
6657 | return attr_decl (); | |
6658 | } | |
6659 | ||
6660 | ||
6661 | match | |
6662 | gfc_match_optional (void) | |
6663 | { | |
9abe5e56 DK |
6664 | /* This is not allowed within a BLOCK construct! */ |
6665 | if (gfc_current_state () == COMP_BLOCK) | |
6666 | { | |
6667 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6668 | return MATCH_ERROR; | |
6669 | } | |
6de9cd9a DN |
6670 | |
6671 | gfc_clear_attr (¤t_attr); | |
1902704e | 6672 | current_attr.optional = 1; |
6de9cd9a DN |
6673 | |
6674 | return attr_decl (); | |
6675 | } | |
6676 | ||
6677 | ||
6678 | match | |
6679 | gfc_match_pointer (void) | |
6680 | { | |
83d890b9 | 6681 | gfc_gobble_whitespace (); |
8fc541d3 | 6682 | if (gfc_peek_ascii_char () == '(') |
83d890b9 AL |
6683 | { |
6684 | if (!gfc_option.flag_cray_pointer) | |
6685 | { | |
636dff67 SK |
6686 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6687 | "flag"); | |
83d890b9 AL |
6688 | return MATCH_ERROR; |
6689 | } | |
6690 | return cray_pointer_decl (); | |
6691 | } | |
6692 | else | |
6693 | { | |
6694 | gfc_clear_attr (¤t_attr); | |
1902704e | 6695 | current_attr.pointer = 1; |
f5acf0f2 | 6696 | |
83d890b9 AL |
6697 | return attr_decl (); |
6698 | } | |
6de9cd9a DN |
6699 | } |
6700 | ||
6701 | ||
6702 | match | |
6703 | gfc_match_allocatable (void) | |
6704 | { | |
6de9cd9a | 6705 | gfc_clear_attr (¤t_attr); |
1902704e | 6706 | current_attr.allocatable = 1; |
6de9cd9a DN |
6707 | |
6708 | return attr_decl (); | |
6709 | } | |
6710 | ||
6711 | ||
be59db2d TB |
6712 | match |
6713 | gfc_match_codimension (void) | |
6714 | { | |
6715 | gfc_clear_attr (¤t_attr); | |
6716 | current_attr.codimension = 1; | |
6717 | ||
6718 | return attr_decl (); | |
6719 | } | |
6720 | ||
6721 | ||
fe4e525c TB |
6722 | match |
6723 | gfc_match_contiguous (void) | |
6724 | { | |
524af0d6 | 6725 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
6726 | return MATCH_ERROR; |
6727 | ||
6728 | gfc_clear_attr (¤t_attr); | |
6729 | current_attr.contiguous = 1; | |
6730 | ||
6731 | return attr_decl (); | |
6732 | } | |
6733 | ||
6734 | ||
6de9cd9a DN |
6735 | match |
6736 | gfc_match_dimension (void) | |
6737 | { | |
6de9cd9a | 6738 | gfc_clear_attr (¤t_attr); |
1902704e | 6739 | current_attr.dimension = 1; |
6de9cd9a DN |
6740 | |
6741 | return attr_decl (); | |
6742 | } | |
6743 | ||
6744 | ||
6745 | match | |
6746 | gfc_match_target (void) | |
6747 | { | |
6de9cd9a | 6748 | gfc_clear_attr (¤t_attr); |
1902704e | 6749 | current_attr.target = 1; |
6de9cd9a DN |
6750 | |
6751 | return attr_decl (); | |
6752 | } | |
6753 | ||
6754 | ||
6755 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6756 | statement. */ | |
6757 | ||
6758 | static match | |
6759 | access_attr_decl (gfc_statement st) | |
6760 | { | |
6761 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6762 | interface_type type; | |
6763 | gfc_user_op *uop; | |
c3f34952 | 6764 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 6765 | gfc_intrinsic_op op; |
6de9cd9a DN |
6766 | match m; |
6767 | ||
6768 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6769 | goto done; | |
6770 | ||
6771 | for (;;) | |
6772 | { | |
a1ee985f | 6773 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
6774 | if (m == MATCH_NO) |
6775 | goto syntax; | |
6776 | if (m == MATCH_ERROR) | |
6777 | return MATCH_ERROR; | |
6778 | ||
6779 | switch (type) | |
6780 | { | |
6781 | case INTERFACE_NAMELESS: | |
9e1d712c | 6782 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
6783 | goto syntax; |
6784 | ||
6785 | case INTERFACE_GENERIC: | |
6786 | if (gfc_get_symbol (name, NULL, &sym)) | |
6787 | goto done; | |
6788 | ||
524af0d6 JB |
6789 | if (!gfc_add_access (&sym->attr, |
6790 | (st == ST_PUBLIC) | |
6791 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
6792 | sym->name, NULL)) | |
6de9cd9a DN |
6793 | return MATCH_ERROR; |
6794 | ||
c3f34952 | 6795 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
524af0d6 JB |
6796 | && !gfc_add_access (&dt_sym->attr, |
6797 | (st == ST_PUBLIC) | |
6798 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
6799 | sym->name, NULL)) | |
c3f34952 TB |
6800 | return MATCH_ERROR; |
6801 | ||
6de9cd9a DN |
6802 | break; |
6803 | ||
6804 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 6805 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 6806 | { |
fb03a37e TK |
6807 | gfc_intrinsic_op other_op; |
6808 | ||
a1ee985f | 6809 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 6810 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
6811 | |
6812 | /* Handle the case if there is another op with the same | |
6813 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6814 | other_op = gfc_equivalent_op (op); | |
6815 | ||
6816 | if (other_op != INTRINSIC_NONE) | |
6817 | gfc_current_ns->operator_access[other_op] = | |
6818 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6819 | ||
6de9cd9a DN |
6820 | } |
6821 | else | |
6822 | { | |
6823 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 6824 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
6825 | goto done; |
6826 | } | |
6827 | ||
6828 | break; | |
6829 | ||
6830 | case INTERFACE_USER_OP: | |
6831 | uop = gfc_get_uop (name); | |
6832 | ||
6833 | if (uop->access == ACCESS_UNKNOWN) | |
6834 | { | |
636dff67 SK |
6835 | uop->access = (st == ST_PUBLIC) |
6836 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
6837 | } |
6838 | else | |
6839 | { | |
636dff67 SK |
6840 | gfc_error ("Access specification of the .%s. operator at %C " |
6841 | "has already been specified", sym->name); | |
6de9cd9a DN |
6842 | goto done; |
6843 | } | |
6844 | ||
6845 | break; | |
6846 | } | |
6847 | ||
6848 | if (gfc_match_char (',') == MATCH_NO) | |
6849 | break; | |
6850 | } | |
6851 | ||
6852 | if (gfc_match_eos () != MATCH_YES) | |
6853 | goto syntax; | |
6854 | return MATCH_YES; | |
6855 | ||
6856 | syntax: | |
6857 | gfc_syntax_error (st); | |
6858 | ||
6859 | done: | |
6860 | return MATCH_ERROR; | |
6861 | } | |
6862 | ||
6863 | ||
ee7e677f TB |
6864 | match |
6865 | gfc_match_protected (void) | |
6866 | { | |
6867 | gfc_symbol *sym; | |
6868 | match m; | |
6869 | ||
6870 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6871 | { | |
6872 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6873 | "part of a module"); | |
6874 | return MATCH_ERROR; | |
6875 | ||
6876 | } | |
6877 | ||
524af0d6 | 6878 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
6879 | return MATCH_ERROR; |
6880 | ||
6881 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6882 | { | |
6883 | return MATCH_ERROR; | |
6884 | } | |
6885 | ||
6886 | if (gfc_match_eos () == MATCH_YES) | |
6887 | goto syntax; | |
6888 | ||
6889 | for(;;) | |
6890 | { | |
6891 | m = gfc_match_symbol (&sym, 0); | |
6892 | switch (m) | |
6893 | { | |
6894 | case MATCH_YES: | |
524af0d6 | 6895 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
6896 | return MATCH_ERROR; |
6897 | goto next_item; | |
6898 | ||
6899 | case MATCH_NO: | |
6900 | break; | |
6901 | ||
6902 | case MATCH_ERROR: | |
6903 | return MATCH_ERROR; | |
6904 | } | |
6905 | ||
6906 | next_item: | |
6907 | if (gfc_match_eos () == MATCH_YES) | |
6908 | break; | |
6909 | if (gfc_match_char (',') != MATCH_YES) | |
6910 | goto syntax; | |
6911 | } | |
6912 | ||
6913 | return MATCH_YES; | |
6914 | ||
6915 | syntax: | |
6916 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6917 | return MATCH_ERROR; | |
6918 | } | |
6919 | ||
6920 | ||
86bf520d | 6921 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 6922 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
6923 | type declaration or a module. */ |
6924 | ||
6925 | match | |
636dff67 | 6926 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
6927 | { |
6928 | ||
6929 | if (gfc_match ("private") != MATCH_YES) | |
6930 | return MATCH_NO; | |
6931 | ||
d51347f9 | 6932 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
6933 | && !(gfc_current_state () == COMP_DERIVED |
6934 | && gfc_state_stack->previous | |
6935 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6936 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6937 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6938 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
6939 | { |
6940 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6941 | "specification part of a module"); | |
6942 | return MATCH_ERROR; | |
6943 | } | |
6944 | ||
6de9cd9a DN |
6945 | if (gfc_current_state () == COMP_DERIVED) |
6946 | { | |
6947 | if (gfc_match_eos () == MATCH_YES) | |
6948 | { | |
6949 | *st = ST_PRIVATE; | |
6950 | return MATCH_YES; | |
6951 | } | |
6952 | ||
6953 | gfc_syntax_error (ST_PRIVATE); | |
6954 | return MATCH_ERROR; | |
6955 | } | |
6956 | ||
6957 | if (gfc_match_eos () == MATCH_YES) | |
6958 | { | |
6959 | *st = ST_PRIVATE; | |
6960 | return MATCH_YES; | |
6961 | } | |
6962 | ||
6963 | *st = ST_ATTR_DECL; | |
6964 | return access_attr_decl (ST_PRIVATE); | |
6965 | } | |
6966 | ||
6967 | ||
6968 | match | |
636dff67 | 6969 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
6970 | { |
6971 | ||
6972 | if (gfc_match ("public") != MATCH_YES) | |
6973 | return MATCH_NO; | |
6974 | ||
d51347f9 TB |
6975 | if (gfc_current_state () != COMP_MODULE) |
6976 | { | |
6977 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6978 | "specification part of a module"); | |
6979 | return MATCH_ERROR; | |
6980 | } | |
6981 | ||
6de9cd9a DN |
6982 | if (gfc_match_eos () == MATCH_YES) |
6983 | { | |
6984 | *st = ST_PUBLIC; | |
6985 | return MATCH_YES; | |
6986 | } | |
6987 | ||
6988 | *st = ST_ATTR_DECL; | |
6989 | return access_attr_decl (ST_PUBLIC); | |
6990 | } | |
6991 | ||
6992 | ||
6993 | /* Workhorse for gfc_match_parameter. */ | |
6994 | ||
6995 | static match | |
6996 | do_parm (void) | |
6997 | { | |
6998 | gfc_symbol *sym; | |
6999 | gfc_expr *init; | |
7000 | match m; | |
524af0d6 | 7001 | bool t; |
6de9cd9a DN |
7002 | |
7003 | m = gfc_match_symbol (&sym, 0); | |
7004 | if (m == MATCH_NO) | |
7005 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7006 | ||
7007 | if (m != MATCH_YES) | |
7008 | return m; | |
7009 | ||
7010 | if (gfc_match_char ('=') == MATCH_NO) | |
7011 | { | |
7012 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7013 | return MATCH_ERROR; | |
7014 | } | |
7015 | ||
7016 | m = gfc_match_init_expr (&init); | |
7017 | if (m == MATCH_NO) | |
7018 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7019 | if (m != MATCH_YES) | |
7020 | return m; | |
7021 | ||
7022 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 7023 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
7024 | { |
7025 | m = MATCH_ERROR; | |
7026 | goto cleanup; | |
7027 | } | |
7028 | ||
524af0d6 JB |
7029 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7030 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
7031 | { |
7032 | m = MATCH_ERROR; | |
7033 | goto cleanup; | |
7034 | } | |
7035 | ||
1283ab12 TB |
7036 | if (sym->value) |
7037 | { | |
7038 | gfc_error ("Initializing already initialized variable at %C"); | |
7039 | m = MATCH_ERROR; | |
7040 | goto cleanup; | |
7041 | } | |
7042 | ||
7919373d | 7043 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7044 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7045 | |
7046 | cleanup: | |
7047 | gfc_free_expr (init); | |
7048 | return m; | |
7049 | } | |
7050 | ||
7051 | ||
7052 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7053 | ||
7054 | match | |
7055 | gfc_match_parameter (void) | |
7056 | { | |
7057 | match m; | |
7058 | ||
7059 | if (gfc_match_char ('(') == MATCH_NO) | |
7060 | return MATCH_NO; | |
7061 | ||
7062 | for (;;) | |
7063 | { | |
7064 | m = do_parm (); | |
7065 | if (m != MATCH_YES) | |
7066 | break; | |
7067 | ||
7068 | if (gfc_match (" )%t") == MATCH_YES) | |
7069 | break; | |
7070 | ||
7071 | if (gfc_match_char (',') != MATCH_YES) | |
7072 | { | |
7073 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7074 | m = MATCH_ERROR; | |
7075 | break; | |
7076 | } | |
7077 | } | |
7078 | ||
7079 | return m; | |
7080 | } | |
7081 | ||
7082 | ||
7083 | /* Save statements have a special syntax. */ | |
7084 | ||
7085 | match | |
7086 | gfc_match_save (void) | |
7087 | { | |
9056bd70 TS |
7088 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7089 | gfc_common_head *c; | |
6de9cd9a DN |
7090 | gfc_symbol *sym; |
7091 | match m; | |
7092 | ||
7093 | if (gfc_match_eos () == MATCH_YES) | |
7094 | { | |
7095 | if (gfc_current_ns->seen_save) | |
7096 | { | |
524af0d6 JB |
7097 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7098 | "follows previous SAVE statement")) | |
09e87839 | 7099 | return MATCH_ERROR; |
6de9cd9a DN |
7100 | } |
7101 | ||
7102 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7103 | return MATCH_YES; | |
7104 | } | |
7105 | ||
7106 | if (gfc_current_ns->save_all) | |
7107 | { | |
524af0d6 JB |
7108 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7109 | "blanket SAVE statement")) | |
09e87839 | 7110 | return MATCH_ERROR; |
6de9cd9a DN |
7111 | } |
7112 | ||
7113 | gfc_match (" ::"); | |
7114 | ||
7115 | for (;;) | |
7116 | { | |
7117 | m = gfc_match_symbol (&sym, 0); | |
7118 | switch (m) | |
7119 | { | |
7120 | case MATCH_YES: | |
524af0d6 JB |
7121 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7122 | &gfc_current_locus)) | |
6de9cd9a DN |
7123 | return MATCH_ERROR; |
7124 | goto next_item; | |
7125 | ||
7126 | case MATCH_NO: | |
7127 | break; | |
7128 | ||
7129 | case MATCH_ERROR: | |
7130 | return MATCH_ERROR; | |
7131 | } | |
7132 | ||
9056bd70 | 7133 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7134 | if (m == MATCH_ERROR) |
7135 | return MATCH_ERROR; | |
7136 | if (m == MATCH_NO) | |
7137 | goto syntax; | |
7138 | ||
53814b8f | 7139 | c = gfc_get_common (n, 0); |
9056bd70 TS |
7140 | c->saved = 1; |
7141 | ||
6de9cd9a DN |
7142 | gfc_current_ns->seen_save = 1; |
7143 | ||
7144 | next_item: | |
7145 | if (gfc_match_eos () == MATCH_YES) | |
7146 | break; | |
7147 | if (gfc_match_char (',') != MATCH_YES) | |
7148 | goto syntax; | |
7149 | } | |
7150 | ||
7151 | return MATCH_YES; | |
7152 | ||
7153 | syntax: | |
7154 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7155 | return MATCH_ERROR; | |
7156 | } | |
7157 | ||
7158 | ||
06469efd PT |
7159 | match |
7160 | gfc_match_value (void) | |
7161 | { | |
7162 | gfc_symbol *sym; | |
7163 | match m; | |
7164 | ||
9abe5e56 DK |
7165 | /* This is not allowed within a BLOCK construct! */ |
7166 | if (gfc_current_state () == COMP_BLOCK) | |
7167 | { | |
7168 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7169 | return MATCH_ERROR; | |
7170 | } | |
7171 | ||
524af0d6 | 7172 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
7173 | return MATCH_ERROR; |
7174 | ||
7175 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7176 | { | |
7177 | return MATCH_ERROR; | |
7178 | } | |
7179 | ||
7180 | if (gfc_match_eos () == MATCH_YES) | |
7181 | goto syntax; | |
7182 | ||
7183 | for(;;) | |
7184 | { | |
7185 | m = gfc_match_symbol (&sym, 0); | |
7186 | switch (m) | |
7187 | { | |
7188 | case MATCH_YES: | |
524af0d6 | 7189 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
7190 | return MATCH_ERROR; |
7191 | goto next_item; | |
7192 | ||
7193 | case MATCH_NO: | |
7194 | break; | |
7195 | ||
7196 | case MATCH_ERROR: | |
7197 | return MATCH_ERROR; | |
7198 | } | |
7199 | ||
7200 | next_item: | |
7201 | if (gfc_match_eos () == MATCH_YES) | |
7202 | break; | |
7203 | if (gfc_match_char (',') != MATCH_YES) | |
7204 | goto syntax; | |
7205 | } | |
7206 | ||
7207 | return MATCH_YES; | |
7208 | ||
7209 | syntax: | |
7210 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7211 | return MATCH_ERROR; | |
7212 | } | |
7213 | ||
66e4ab31 | 7214 | |
775e6c3a TB |
7215 | match |
7216 | gfc_match_volatile (void) | |
7217 | { | |
7218 | gfc_symbol *sym; | |
7219 | match m; | |
7220 | ||
524af0d6 | 7221 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
7222 | return MATCH_ERROR; |
7223 | ||
7224 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7225 | { | |
7226 | return MATCH_ERROR; | |
7227 | } | |
7228 | ||
7229 | if (gfc_match_eos () == MATCH_YES) | |
7230 | goto syntax; | |
7231 | ||
7232 | for(;;) | |
7233 | { | |
f5acf0f2 | 7234 | /* VOLATILE is special because it can be added to host-associated |
be59db2d | 7235 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7236 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7237 | switch (m) |
7238 | { | |
7239 | case MATCH_YES: | |
be59db2d TB |
7240 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7241 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7242 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7243 | { | |
7244 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7245 | "%C, which is use-/host-associated", sym->name); | |
7246 | return MATCH_ERROR; | |
7247 | } | |
524af0d6 | 7248 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
7249 | return MATCH_ERROR; |
7250 | goto next_item; | |
7251 | ||
7252 | case MATCH_NO: | |
7253 | break; | |
7254 | ||
7255 | case MATCH_ERROR: | |
7256 | return MATCH_ERROR; | |
7257 | } | |
7258 | ||
7259 | next_item: | |
7260 | if (gfc_match_eos () == MATCH_YES) | |
7261 | break; | |
7262 | if (gfc_match_char (',') != MATCH_YES) | |
7263 | goto syntax; | |
7264 | } | |
7265 | ||
7266 | return MATCH_YES; | |
7267 | ||
7268 | syntax: | |
7269 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7270 | return MATCH_ERROR; | |
7271 | } | |
7272 | ||
7273 | ||
1eee5628 TB |
7274 | match |
7275 | gfc_match_asynchronous (void) | |
7276 | { | |
7277 | gfc_symbol *sym; | |
7278 | match m; | |
7279 | ||
524af0d6 | 7280 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
7281 | return MATCH_ERROR; |
7282 | ||
7283 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7284 | { | |
7285 | return MATCH_ERROR; | |
7286 | } | |
7287 | ||
7288 | if (gfc_match_eos () == MATCH_YES) | |
7289 | goto syntax; | |
7290 | ||
7291 | for(;;) | |
7292 | { | |
f5acf0f2 | 7293 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
7294 | symbols locally. */ |
7295 | m = gfc_match_symbol (&sym, 1); | |
7296 | switch (m) | |
7297 | { | |
7298 | case MATCH_YES: | |
524af0d6 | 7299 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
7300 | return MATCH_ERROR; |
7301 | goto next_item; | |
7302 | ||
7303 | case MATCH_NO: | |
7304 | break; | |
7305 | ||
7306 | case MATCH_ERROR: | |
7307 | return MATCH_ERROR; | |
7308 | } | |
7309 | ||
7310 | next_item: | |
7311 | if (gfc_match_eos () == MATCH_YES) | |
7312 | break; | |
7313 | if (gfc_match_char (',') != MATCH_YES) | |
7314 | goto syntax; | |
7315 | } | |
7316 | ||
7317 | return MATCH_YES; | |
7318 | ||
7319 | syntax: | |
7320 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7321 | return MATCH_ERROR; | |
7322 | } | |
7323 | ||
7324 | ||
6de9cd9a DN |
7325 | /* Match a module procedure statement. Note that we have to modify |
7326 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7327 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7328 | |
7329 | match | |
7330 | gfc_match_modproc (void) | |
7331 | { | |
7332 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7333 | gfc_symbol *sym; | |
7334 | match m; | |
162b5a21 | 7335 | locus old_locus; |
060fca4a | 7336 | gfc_namespace *module_ns; |
2b77e908 | 7337 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7338 | |
7339 | if (gfc_state_stack->state != COMP_INTERFACE | |
7340 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7341 | || current_interface.type == INTERFACE_NAMELESS |
7342 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7343 | { |
636dff67 SK |
7344 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7345 | "interface"); | |
6de9cd9a DN |
7346 | return MATCH_ERROR; |
7347 | } | |
7348 | ||
060fca4a PT |
7349 | module_ns = gfc_current_ns->parent; |
7350 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7351 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7352 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7353 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7354 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7355 | break; |
7356 | ||
7357 | if (module_ns == NULL) | |
7358 | return MATCH_ERROR; | |
7359 | ||
2b77e908 FXC |
7360 | /* Store the current state of the interface. We will need it if we |
7361 | end up with a syntax error and need to recover. */ | |
7362 | old_interface_head = gfc_current_interface_head (); | |
7363 | ||
162b5a21 SK |
7364 | /* Check if the F2008 optional double colon appears. */ |
7365 | gfc_gobble_whitespace (); | |
7366 | old_locus = gfc_current_locus; | |
7367 | if (gfc_match ("::") == MATCH_YES) | |
7368 | { | |
524af0d6 JB |
7369 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7370 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
7371 | return MATCH_ERROR; |
7372 | } | |
7373 | else | |
7374 | gfc_current_locus = old_locus; | |
f5acf0f2 | 7375 | |
6de9cd9a DN |
7376 | for (;;) |
7377 | { | |
2b77e908 | 7378 | bool last = false; |
162b5a21 | 7379 | old_locus = gfc_current_locus; |
2b77e908 | 7380 | |
6de9cd9a DN |
7381 | m = gfc_match_name (name); |
7382 | if (m == MATCH_NO) | |
7383 | goto syntax; | |
7384 | if (m != MATCH_YES) | |
7385 | return MATCH_ERROR; | |
7386 | ||
2b77e908 FXC |
7387 | /* Check for syntax error before starting to add symbols to the |
7388 | current namespace. */ | |
7389 | if (gfc_match_eos () == MATCH_YES) | |
7390 | last = true; | |
162b5a21 | 7391 | |
2b77e908 FXC |
7392 | if (!last && gfc_match_char (',') != MATCH_YES) |
7393 | goto syntax; | |
7394 | ||
7395 | /* Now we're sure the syntax is valid, we process this item | |
7396 | further. */ | |
060fca4a | 7397 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7398 | return MATCH_ERROR; |
7399 | ||
43dfd40c SK |
7400 | if (sym->attr.intrinsic) |
7401 | { | |
7402 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7403 | "PROCEDURE", &old_locus); | |
7404 | return MATCH_ERROR; | |
7405 | } | |
7406 | ||
6de9cd9a | 7407 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 7408 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
7409 | return MATCH_ERROR; |
7410 | ||
524af0d6 | 7411 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
7412 | return MATCH_ERROR; |
7413 | ||
71f77fd7 | 7414 | sym->attr.mod_proc = 1; |
43dfd40c | 7415 | sym->declared_at = old_locus; |
71f77fd7 | 7416 | |
2b77e908 | 7417 | if (last) |
6de9cd9a | 7418 | break; |
6de9cd9a DN |
7419 | } |
7420 | ||
7421 | return MATCH_YES; | |
7422 | ||
7423 | syntax: | |
2b77e908 FXC |
7424 | /* Restore the previous state of the interface. */ |
7425 | interface = gfc_current_interface_head (); | |
7426 | gfc_set_current_interface_head (old_interface_head); | |
7427 | ||
7428 | /* Free the new interfaces. */ | |
7429 | while (interface != old_interface_head) | |
7430 | { | |
7431 | gfc_interface *i = interface->next; | |
cede9502 | 7432 | free (interface); |
2b77e908 FXC |
7433 | interface = i; |
7434 | } | |
7435 | ||
7436 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7437 | gfc_syntax_error (ST_MODULE_PROC); |
7438 | return MATCH_ERROR; | |
7439 | } | |
7440 | ||
7441 | ||
7d1f1e61 | 7442 | /* Check a derived type that is being extended. */ |
42e3d759 | 7443 | |
7d1f1e61 PT |
7444 | static gfc_symbol* |
7445 | check_extended_derived_type (char *name) | |
7446 | { | |
7447 | gfc_symbol *extended; | |
7448 | ||
7449 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7450 | { | |
7451 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7452 | return NULL; | |
7453 | } | |
7454 | ||
42e3d759 JW |
7455 | extended = gfc_find_dt_in_generic (extended); |
7456 | ||
7457 | /* F08:C428. */ | |
7d1f1e61 PT |
7458 | if (!extended) |
7459 | { | |
42e3d759 | 7460 | gfc_error ("Symbol '%s' at %C has not been previously defined", name); |
7d1f1e61 PT |
7461 | return NULL; |
7462 | } | |
7463 | ||
7464 | if (extended->attr.flavor != FL_DERIVED) | |
7465 | { | |
7466 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7467 | "derived type", name); | |
7468 | return NULL; | |
7469 | } | |
7470 | ||
7471 | if (extended->attr.is_bind_c) | |
7472 | { | |
7473 | gfc_error ("'%s' cannot be extended at %C because it " | |
7474 | "is BIND(C)", extended->name); | |
7475 | return NULL; | |
7476 | } | |
7477 | ||
7478 | if (extended->attr.sequence) | |
7479 | { | |
7480 | gfc_error ("'%s' cannot be extended at %C because it " | |
7481 | "is a SEQUENCE type", extended->name); | |
7482 | return NULL; | |
7483 | } | |
7484 | ||
7485 | return extended; | |
7486 | } | |
7487 | ||
7488 | ||
a8b3b0b6 CR |
7489 | /* Match the optional attribute specifiers for a type declaration. |
7490 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7491 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7492 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7493 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7494 | |
7495 | match | |
7d1f1e61 | 7496 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7497 | { |
a8b3b0b6 | 7498 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7499 | if (gfc_match (" , private") == MATCH_YES) |
7500 | { | |
d51347f9 | 7501 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7502 | { |
d51347f9 TB |
7503 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7504 | "specification part of a module"); | |
6de9cd9a DN |
7505 | return MATCH_ERROR; |
7506 | } | |
7507 | ||
524af0d6 | 7508 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 7509 | return MATCH_ERROR; |
6de9cd9a | 7510 | } |
a8b3b0b6 | 7511 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7512 | { |
d51347f9 | 7513 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7514 | { |
d51347f9 TB |
7515 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7516 | "specification part of a module"); | |
6de9cd9a DN |
7517 | return MATCH_ERROR; |
7518 | } | |
7519 | ||
524af0d6 | 7520 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 7521 | return MATCH_ERROR; |
6de9cd9a | 7522 | } |
52f49934 | 7523 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7524 | { |
7525 | /* If the type is defined to be bind(c) it then needs to make | |
7526 | sure that all fields are interoperable. This will | |
7527 | need to be a semantic check on the finished derived type. | |
7528 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 7529 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
7530 | return MATCH_ERROR; |
7531 | ||
7532 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7533 | } | |
52f49934 DK |
7534 | else if (gfc_match (" , abstract") == MATCH_YES) |
7535 | { | |
524af0d6 | 7536 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
7537 | return MATCH_ERROR; |
7538 | ||
524af0d6 | 7539 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
7540 | return MATCH_ERROR; |
7541 | } | |
524af0d6 | 7542 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 7543 | { |
524af0d6 | 7544 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
7545 | return MATCH_ERROR; |
7546 | } | |
a8b3b0b6 CR |
7547 | else |
7548 | return MATCH_NO; | |
7549 | ||
7550 | /* If we get here, something matched. */ | |
7551 | return MATCH_YES; | |
7552 | } | |
7553 | ||
7554 | ||
7555 | /* Match the beginning of a derived type declaration. If a type name | |
7556 | was the result of a function, then it is possible to have a symbol | |
7557 | already to be known as a derived type yet have no components. */ | |
7558 | ||
7559 | match | |
7560 | gfc_match_derived_decl (void) | |
7561 | { | |
7562 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7563 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7564 | symbol_attribute attr; |
c3f34952 | 7565 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7566 | gfc_symbol *extended; |
a8b3b0b6 CR |
7567 | match m; |
7568 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7569 | bool seen_attr = false; |
c3f34952 | 7570 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7571 | |
7572 | if (gfc_current_state () == COMP_DERIVED) | |
7573 | return MATCH_NO; | |
7574 | ||
7d1f1e61 PT |
7575 | name[0] = '\0'; |
7576 | parent[0] = '\0'; | |
a8b3b0b6 | 7577 | gfc_clear_attr (&attr); |
7d1f1e61 | 7578 | extended = NULL; |
a8b3b0b6 CR |
7579 | |
7580 | do | |
7581 | { | |
7d1f1e61 | 7582 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7583 | if (is_type_attr_spec == MATCH_ERROR) |
7584 | return MATCH_ERROR; | |
e7303e85 FXC |
7585 | if (is_type_attr_spec == MATCH_YES) |
7586 | seen_attr = true; | |
a8b3b0b6 | 7587 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7588 | |
63a3341a PT |
7589 | /* Deal with derived type extensions. The extension attribute has |
7590 | been added to 'attr' but now the parent type must be found and | |
7591 | checked. */ | |
7d1f1e61 PT |
7592 | if (parent[0]) |
7593 | extended = check_extended_derived_type (parent); | |
7594 | ||
7595 | if (parent[0] && !extended) | |
7596 | return MATCH_ERROR; | |
7597 | ||
e7303e85 | 7598 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7599 | { |
7600 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7601 | return MATCH_ERROR; | |
7602 | } | |
7603 | ||
7604 | m = gfc_match (" %n%t", name); | |
7605 | if (m != MATCH_YES) | |
7606 | return m; | |
7607 | ||
e9c06563 TB |
7608 | /* Make sure the name is not the name of an intrinsic type. */ |
7609 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7610 | { |
636dff67 SK |
7611 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7612 | "type", name); | |
6de9cd9a DN |
7613 | return MATCH_ERROR; |
7614 | } | |
7615 | ||
c3f34952 | 7616 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
7617 | return MATCH_ERROR; |
7618 | ||
c3f34952 | 7619 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a DN |
7620 | { |
7621 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c3f34952 TB |
7622 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7623 | return MATCH_ERROR; | |
7624 | } | |
7625 | ||
7626 | if (!gensym->attr.generic | |
524af0d6 | 7627 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
7628 | return MATCH_ERROR; |
7629 | ||
7630 | if (!gensym->attr.function | |
524af0d6 | 7631 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
7632 | return MATCH_ERROR; |
7633 | ||
7634 | sym = gfc_find_dt_in_generic (gensym); | |
7635 | ||
7636 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7637 | { | |
7638 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7639 | "defined", sym->name); | |
6de9cd9a DN |
7640 | return MATCH_ERROR; |
7641 | } | |
7642 | ||
c3f34952 TB |
7643 | if (!sym) |
7644 | { | |
7645 | /* Use upper case to save the actual derived-type symbol. */ | |
7646 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7647 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7648 | &gensym->name[1]), NULL, &sym); | |
7649 | sym->name = gfc_get_string (gensym->name); | |
7650 | head = gensym->generic; | |
7651 | intr = gfc_get_interface (); | |
7652 | intr->sym = sym; | |
7653 | intr->where = gfc_current_locus; | |
7654 | intr->sym->declared_at = gfc_current_locus; | |
7655 | intr->next = head; | |
7656 | gensym->generic = intr; | |
7657 | gensym->attr.if_source = IFSRC_DECL; | |
7658 | } | |
7659 | ||
6de9cd9a DN |
7660 | /* The symbol may already have the derived attribute without the |
7661 | components. The ways this can happen is via a function | |
7662 | definition, an INTRINSIC statement or a subtype in another | |
7663 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 7664 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 7665 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 7666 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
7667 | return MATCH_ERROR; |
7668 | ||
6de9cd9a | 7669 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 7670 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 7671 | return MATCH_ERROR; |
c3f34952 TB |
7672 | else if (sym->attr.access == ACCESS_UNKNOWN |
7673 | && gensym->attr.access != ACCESS_UNKNOWN | |
524af0d6 JB |
7674 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
7675 | sym->name, NULL)) | |
c3f34952 TB |
7676 | return MATCH_ERROR; |
7677 | ||
7678 | if (sym->attr.access != ACCESS_UNKNOWN | |
7679 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7680 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 7681 | |
a8b3b0b6 CR |
7682 | /* See if the derived type was labeled as bind(c). */ |
7683 | if (attr.is_bind_c != 0) | |
7684 | sym->attr.is_bind_c = attr.is_bind_c; | |
7685 | ||
34523524 DK |
7686 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7687 | if (!sym->f2k_derived) | |
7688 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 7689 | |
7d1f1e61 PT |
7690 | if (extended && !sym->components) |
7691 | { | |
7692 | gfc_component *p; | |
7693 | gfc_symtree *st; | |
7694 | ||
7695 | /* Add the extended derived type as the first component. */ | |
7696 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
7697 | extended->refs++; |
7698 | gfc_set_sym_referenced (extended); | |
7699 | ||
7700 | p->ts.type = BT_DERIVED; | |
bc21d315 | 7701 | p->ts.u.derived = extended; |
7d1f1e61 | 7702 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 7703 | |
7c1dab0d JW |
7704 | /* Set extension level. */ |
7705 | if (extended->attr.extension == 255) | |
7706 | { | |
7707 | /* Since the extension field is 8 bit wide, we can only have | |
7708 | up to 255 extension levels. */ | |
7709 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7710 | extended->name, &extended->declared_at); | |
7711 | return MATCH_ERROR; | |
7712 | } | |
7713 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
7714 | |
7715 | /* Provide the links between the extended type and its extension. */ | |
7716 | if (!extended->f2k_derived) | |
7717 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7718 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7719 | st->n.sym = sym; | |
7720 | } | |
7721 | ||
7c1dab0d JW |
7722 | if (!sym->hash_value) |
7723 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 7724 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 7725 | |
52f49934 DK |
7726 | /* Take over the ABSTRACT attribute. */ |
7727 | sym->attr.abstract = attr.abstract; | |
7728 | ||
6de9cd9a DN |
7729 | gfc_new_block = sym; |
7730 | ||
7731 | return MATCH_YES; | |
7732 | } | |
83d890b9 AL |
7733 | |
7734 | ||
f5acf0f2 | 7735 | /* Cray Pointees can be declared as: |
b3aefde2 | 7736 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 7737 | |
32e8bb8e | 7738 | match |
83d890b9 AL |
7739 | gfc_mod_pointee_as (gfc_array_spec *as) |
7740 | { | |
7741 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7742 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 7743 | as->cp_was_assumed = true; |
83d890b9 AL |
7744 | else if (as->type == AS_ASSUMED_SHAPE) |
7745 | { | |
7746 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7747 | return MATCH_ERROR; | |
7748 | } | |
7749 | return MATCH_YES; | |
7750 | } | |
25d8f0a2 TS |
7751 | |
7752 | ||
f5acf0f2 PT |
7753 | /* Match the enum definition statement, here we are trying to match |
7754 | the first line of enum definition statement. | |
25d8f0a2 TS |
7755 | Returns MATCH_YES if match is found. */ |
7756 | ||
7757 | match | |
7758 | gfc_match_enum (void) | |
7759 | { | |
7760 | match m; | |
f5acf0f2 | 7761 | |
25d8f0a2 TS |
7762 | m = gfc_match_eos (); |
7763 | if (m != MATCH_YES) | |
7764 | return m; | |
7765 | ||
524af0d6 | 7766 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
7767 | return MATCH_ERROR; |
7768 | ||
7769 | return MATCH_YES; | |
7770 | } | |
7771 | ||
7772 | ||
31224396 SK |
7773 | /* Returns an initializer whose value is one higher than the value of the |
7774 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7775 | initializers value will be set to zero. The initializer's kind | |
7776 | will be set to gfc_c_int_kind. | |
7777 | ||
7778 | If -fshort-enums is given, the appropriate kind will be selected | |
7779 | later after all enumerators have been parsed. A warning is issued | |
7780 | here if an initializer exceeds gfc_c_int_kind. */ | |
7781 | ||
7782 | static gfc_expr * | |
7783 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7784 | { | |
7785 | gfc_expr *result; | |
b7e75771 | 7786 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
7787 | |
7788 | mpz_init (result->value.integer); | |
7789 | ||
7790 | if (last_initializer != NULL) | |
7791 | { | |
7792 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7793 | result->where = last_initializer->where; | |
7794 | ||
7795 | if (gfc_check_integer_range (result->value.integer, | |
7796 | gfc_c_int_kind) != ARITH_OK) | |
7797 | { | |
7798 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7799 | return NULL; | |
7800 | } | |
7801 | } | |
7802 | else | |
7803 | { | |
7804 | /* Control comes here, if it's the very first enumerator and no | |
7805 | initializer has been given. It will be initialized to zero. */ | |
7806 | mpz_set_si (result->value.integer, 0); | |
7807 | } | |
7808 | ||
7809 | return result; | |
7810 | } | |
7811 | ||
7812 | ||
6133c68a TS |
7813 | /* Match a variable name with an optional initializer. When this |
7814 | subroutine is called, a variable is expected to be parsed next. | |
7815 | Depending on what is happening at the moment, updates either the | |
7816 | symbol table or the current interface. */ | |
7817 | ||
7818 | static match | |
7819 | enumerator_decl (void) | |
7820 | { | |
7821 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7822 | gfc_expr *initializer; | |
7823 | gfc_array_spec *as = NULL; | |
7824 | gfc_symbol *sym; | |
7825 | locus var_locus; | |
7826 | match m; | |
524af0d6 | 7827 | bool t; |
6133c68a TS |
7828 | locus old_locus; |
7829 | ||
7830 | initializer = NULL; | |
7831 | old_locus = gfc_current_locus; | |
7832 | ||
7833 | /* When we get here, we've just matched a list of attributes and | |
7834 | maybe a type and a double colon. The next thing we expect to see | |
7835 | is the name of the symbol. */ | |
7836 | m = gfc_match_name (name); | |
7837 | if (m != MATCH_YES) | |
7838 | goto cleanup; | |
7839 | ||
7840 | var_locus = gfc_current_locus; | |
7841 | ||
7842 | /* OK, we've successfully matched the declaration. Now put the | |
7843 | symbol in the current namespace. If we fail to create the symbol, | |
7844 | bail out. */ | |
524af0d6 | 7845 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
7846 | { |
7847 | m = MATCH_ERROR; | |
7848 | goto cleanup; | |
7849 | } | |
7850 | ||
7851 | /* The double colon must be present in order to have initializers. | |
7852 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7853 | if (colon_seen) | |
7854 | { | |
7855 | if (gfc_match_char ('=') == MATCH_YES) | |
7856 | { | |
7857 | m = gfc_match_init_expr (&initializer); | |
7858 | if (m == MATCH_NO) | |
7859 | { | |
7860 | gfc_error ("Expected an initialization expression at %C"); | |
7861 | m = MATCH_ERROR; | |
7862 | } | |
7863 | ||
7864 | if (m != MATCH_YES) | |
7865 | goto cleanup; | |
7866 | } | |
7867 | } | |
7868 | ||
7869 | /* If we do not have an initializer, the initialization value of the | |
7870 | previous enumerator (stored in last_initializer) is incremented | |
7871 | by 1 and is used to initialize the current enumerator. */ | |
7872 | if (initializer == NULL) | |
31224396 | 7873 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 7874 | |
6133c68a TS |
7875 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7876 | { | |
01e64c3d JJ |
7877 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7878 | &var_locus); | |
d51347f9 | 7879 | m = MATCH_ERROR; |
6133c68a TS |
7880 | goto cleanup; |
7881 | } | |
7882 | ||
7883 | /* Store this current initializer, for the next enumerator variable | |
7884 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7885 | use last_initializer below. */ | |
7886 | last_initializer = initializer; | |
7887 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7888 | ||
7889 | /* Maintain enumerator history. */ | |
7890 | gfc_find_symbol (name, NULL, 0, &sym); | |
7891 | create_enum_history (sym, last_initializer); | |
7892 | ||
524af0d6 | 7893 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
7894 | |
7895 | cleanup: | |
7896 | /* Free stuff up and return. */ | |
7897 | gfc_free_expr (initializer); | |
7898 | ||
7899 | return m; | |
7900 | } | |
7901 | ||
7902 | ||
66e4ab31 | 7903 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
7904 | |
7905 | match | |
7906 | gfc_match_enumerator_def (void) | |
7907 | { | |
7908 | match m; | |
524af0d6 | 7909 | bool t; |
d51347f9 | 7910 | |
25d8f0a2 | 7911 | gfc_clear_ts (¤t_ts); |
d51347f9 | 7912 | |
25d8f0a2 TS |
7913 | m = gfc_match (" enumerator"); |
7914 | if (m != MATCH_YES) | |
7915 | return m; | |
6133c68a TS |
7916 | |
7917 | m = gfc_match (" :: "); | |
7918 | if (m == MATCH_ERROR) | |
7919 | return m; | |
7920 | ||
7921 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 7922 | |
25d8f0a2 TS |
7923 | if (gfc_current_state () != COMP_ENUM) |
7924 | { | |
7925 | gfc_error ("ENUM definition statement expected before %C"); | |
7926 | gfc_free_enum_history (); | |
7927 | return MATCH_ERROR; | |
7928 | } | |
7929 | ||
7930 | (¤t_ts)->type = BT_INTEGER; | |
7931 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 7932 | |
6133c68a TS |
7933 | gfc_clear_attr (¤t_attr); |
7934 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 7935 | if (!t) |
25d8f0a2 | 7936 | { |
6133c68a | 7937 | m = MATCH_ERROR; |
25d8f0a2 TS |
7938 | goto cleanup; |
7939 | } | |
7940 | ||
25d8f0a2 TS |
7941 | for (;;) |
7942 | { | |
6133c68a | 7943 | m = enumerator_decl (); |
25d8f0a2 | 7944 | if (m == MATCH_ERROR) |
01e64c3d JJ |
7945 | { |
7946 | gfc_free_enum_history (); | |
7947 | goto cleanup; | |
7948 | } | |
25d8f0a2 TS |
7949 | if (m == MATCH_NO) |
7950 | break; | |
7951 | ||
7952 | if (gfc_match_eos () == MATCH_YES) | |
7953 | goto cleanup; | |
7954 | if (gfc_match_char (',') != MATCH_YES) | |
7955 | break; | |
7956 | } | |
7957 | ||
7958 | if (gfc_current_state () == COMP_ENUM) | |
7959 | { | |
7960 | gfc_free_enum_history (); | |
7961 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7962 | m = MATCH_ERROR; | |
7963 | } | |
7964 | ||
7965 | cleanup: | |
7966 | gfc_free_array_spec (current_as); | |
7967 | current_as = NULL; | |
7968 | return m; | |
7969 | ||
7970 | } | |
7971 | ||
f6fad28e | 7972 | |
30b608eb DK |
7973 | /* Match binding attributes. */ |
7974 | ||
7975 | static match | |
713485cc | 7976 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
7977 | { |
7978 | bool found_passing = false; | |
713485cc | 7979 | bool seen_ptr = false; |
90661f26 | 7980 | match m = MATCH_YES; |
30b608eb | 7981 | |
eea58adb | 7982 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
7983 | this case the defaults are in there. */ |
7984 | ba->access = ACCESS_UNKNOWN; | |
7985 | ba->pass_arg = NULL; | |
7986 | ba->pass_arg_num = 0; | |
7987 | ba->nopass = 0; | |
7988 | ba->non_overridable = 0; | |
b0e5fa94 | 7989 | ba->deferred = 0; |
90661f26 | 7990 | ba->ppc = ppc; |
30b608eb DK |
7991 | |
7992 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
7993 | m = gfc_match_char (','); |
7994 | if (m == MATCH_NO) | |
7995 | goto done; | |
30b608eb DK |
7996 | |
7997 | do | |
7998 | { | |
e157f736 DK |
7999 | /* Access specifier. */ |
8000 | ||
8001 | m = gfc_match (" public"); | |
30b608eb DK |
8002 | if (m == MATCH_ERROR) |
8003 | goto error; | |
8004 | if (m == MATCH_YES) | |
8005 | { | |
e157f736 | 8006 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8007 | { |
e157f736 | 8008 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8009 | goto error; |
8010 | } | |
8011 | ||
e157f736 | 8012 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
8013 | continue; |
8014 | } | |
8015 | ||
e157f736 | 8016 | m = gfc_match (" private"); |
30b608eb DK |
8017 | if (m == MATCH_ERROR) |
8018 | goto error; | |
8019 | if (m == MATCH_YES) | |
8020 | { | |
e157f736 | 8021 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8022 | { |
e157f736 | 8023 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8024 | goto error; |
8025 | } | |
8026 | ||
e157f736 | 8027 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
8028 | continue; |
8029 | } | |
8030 | ||
e157f736 DK |
8031 | /* If inside GENERIC, the following is not allowed. */ |
8032 | if (!generic) | |
30b608eb | 8033 | { |
30b608eb | 8034 | |
e157f736 DK |
8035 | /* NOPASS flag. */ |
8036 | m = gfc_match (" nopass"); | |
8037 | if (m == MATCH_ERROR) | |
8038 | goto error; | |
8039 | if (m == MATCH_YES) | |
30b608eb | 8040 | { |
e157f736 DK |
8041 | if (found_passing) |
8042 | { | |
8043 | gfc_error ("Binding attributes already specify passing," | |
8044 | " illegal NOPASS at %C"); | |
8045 | goto error; | |
8046 | } | |
8047 | ||
8048 | found_passing = true; | |
8049 | ba->nopass = 1; | |
8050 | continue; | |
30b608eb DK |
8051 | } |
8052 | ||
e157f736 DK |
8053 | /* PASS possibly including argument. */ |
8054 | m = gfc_match (" pass"); | |
8055 | if (m == MATCH_ERROR) | |
8056 | goto error; | |
8057 | if (m == MATCH_YES) | |
30b608eb | 8058 | { |
e157f736 DK |
8059 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8060 | ||
8061 | if (found_passing) | |
8062 | { | |
8063 | gfc_error ("Binding attributes already specify passing," | |
8064 | " illegal PASS at %C"); | |
8065 | goto error; | |
8066 | } | |
8067 | ||
8068 | m = gfc_match (" ( %n )", arg); | |
8069 | if (m == MATCH_ERROR) | |
8070 | goto error; | |
8071 | if (m == MATCH_YES) | |
90661f26 | 8072 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
8073 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8074 | ||
8075 | found_passing = true; | |
8076 | ba->nopass = 0; | |
8077 | continue; | |
30b608eb DK |
8078 | } |
8079 | ||
713485cc JW |
8080 | if (ppc) |
8081 | { | |
8082 | /* POINTER flag. */ | |
8083 | m = gfc_match (" pointer"); | |
8084 | if (m == MATCH_ERROR) | |
8085 | goto error; | |
8086 | if (m == MATCH_YES) | |
8087 | { | |
8088 | if (seen_ptr) | |
8089 | { | |
8090 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8091 | goto error; | |
8092 | } | |
8093 | ||
8094 | seen_ptr = true; | |
713485cc JW |
8095 | continue; |
8096 | } | |
8097 | } | |
8098 | else | |
8099 | { | |
8100 | /* NON_OVERRIDABLE flag. */ | |
8101 | m = gfc_match (" non_overridable"); | |
8102 | if (m == MATCH_ERROR) | |
8103 | goto error; | |
8104 | if (m == MATCH_YES) | |
8105 | { | |
8106 | if (ba->non_overridable) | |
8107 | { | |
8108 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8109 | goto error; | |
8110 | } | |
8111 | ||
8112 | ba->non_overridable = 1; | |
8113 | continue; | |
8114 | } | |
8115 | ||
8116 | /* DEFERRED flag. */ | |
8117 | m = gfc_match (" deferred"); | |
8118 | if (m == MATCH_ERROR) | |
8119 | goto error; | |
8120 | if (m == MATCH_YES) | |
8121 | { | |
8122 | if (ba->deferred) | |
8123 | { | |
8124 | gfc_error ("Duplicate DEFERRED at %C"); | |
8125 | goto error; | |
8126 | } | |
8127 | ||
8128 | ba->deferred = 1; | |
8129 | continue; | |
8130 | } | |
8131 | } | |
8132 | ||
30b608eb DK |
8133 | } |
8134 | ||
8135 | /* Nothing matching found. */ | |
e157f736 DK |
8136 | if (generic) |
8137 | gfc_error ("Expected access-specifier at %C"); | |
8138 | else | |
8139 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
8140 | goto error; |
8141 | } | |
8142 | while (gfc_match_char (',') == MATCH_YES); | |
8143 | ||
b0e5fa94 DK |
8144 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8145 | if (ba->non_overridable && ba->deferred) | |
8146 | { | |
8147 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8148 | goto error; | |
8149 | } | |
8150 | ||
90661f26 JW |
8151 | m = MATCH_YES; |
8152 | ||
8153 | done: | |
e157f736 DK |
8154 | if (ba->access == ACCESS_UNKNOWN) |
8155 | ba->access = gfc_typebound_default_access; | |
8156 | ||
713485cc JW |
8157 | if (ppc && !seen_ptr) |
8158 | { | |
8159 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8160 | " at %C"); | |
8161 | goto error; | |
8162 | } | |
8163 | ||
90661f26 | 8164 | return m; |
30b608eb DK |
8165 | |
8166 | error: | |
30b608eb DK |
8167 | return MATCH_ERROR; |
8168 | } | |
8169 | ||
8170 | ||
8171 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8172 | ||
8173 | static match | |
8174 | match_procedure_in_type (void) | |
8175 | { | |
8176 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8177 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 8178 | char* target = NULL, *ifc = NULL; |
3e15518b | 8179 | gfc_typebound_proc tb; |
30b608eb DK |
8180 | bool seen_colons; |
8181 | bool seen_attrs; | |
8182 | match m; | |
8183 | gfc_symtree* stree; | |
8184 | gfc_namespace* ns; | |
8185 | gfc_symbol* block; | |
1be17993 | 8186 | int num; |
30b608eb DK |
8187 | |
8188 | /* Check current state. */ | |
8189 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8190 | block = gfc_state_stack->previous->sym; | |
8191 | gcc_assert (block); | |
8192 | ||
b0e5fa94 | 8193 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
8194 | if (gfc_match (" (") == MATCH_YES) |
8195 | { | |
b0e5fa94 DK |
8196 | m = gfc_match_name (target_buf); |
8197 | if (m == MATCH_ERROR) | |
8198 | return m; | |
8199 | if (m != MATCH_YES) | |
8200 | { | |
8201 | gfc_error ("Interface-name expected after '(' at %C"); | |
8202 | return MATCH_ERROR; | |
8203 | } | |
8204 | ||
8205 | if (gfc_match (" )") != MATCH_YES) | |
8206 | { | |
8207 | gfc_error ("')' expected at %C"); | |
8208 | return MATCH_ERROR; | |
8209 | } | |
8210 | ||
1be17993 | 8211 | ifc = target_buf; |
30b608eb DK |
8212 | } |
8213 | ||
8214 | /* Construct the data structure. */ | |
ff5b6492 | 8215 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8216 | tb.where = gfc_current_locus; |
30b608eb DK |
8217 | |
8218 | /* Match binding attributes. */ | |
3e15518b | 8219 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8220 | if (m == MATCH_ERROR) |
8221 | return m; | |
8222 | seen_attrs = (m == MATCH_YES); | |
8223 | ||
1be17993 | 8224 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8225 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8226 | { |
8227 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8228 | return MATCH_ERROR; | |
8229 | } | |
3e15518b | 8230 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8231 | { |
8232 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8233 | return MATCH_ERROR; | |
8234 | } | |
8235 | ||
30b608eb DK |
8236 | /* Match the colons. */ |
8237 | m = gfc_match (" ::"); | |
8238 | if (m == MATCH_ERROR) | |
8239 | return m; | |
8240 | seen_colons = (m == MATCH_YES); | |
8241 | if (seen_attrs && !seen_colons) | |
8242 | { | |
8243 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8244 | return MATCH_ERROR; | |
8245 | } | |
8246 | ||
f5acf0f2 | 8247 | /* Match the binding names. */ |
1be17993 | 8248 | for(num=1;;num++) |
30b608eb | 8249 | { |
1be17993 JW |
8250 | m = gfc_match_name (name); |
8251 | if (m == MATCH_ERROR) | |
8252 | return m; | |
8253 | if (m == MATCH_NO) | |
b0e5fa94 | 8254 | { |
1be17993 | 8255 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8256 | return MATCH_ERROR; |
8257 | } | |
8258 | ||
524af0d6 | 8259 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 8260 | return MATCH_ERROR; |
30b608eb | 8261 | |
1be17993 JW |
8262 | /* Try to match the '=> target', if it's there. */ |
8263 | target = ifc; | |
8264 | m = gfc_match (" =>"); | |
30b608eb DK |
8265 | if (m == MATCH_ERROR) |
8266 | return m; | |
1be17993 | 8267 | if (m == MATCH_YES) |
30b608eb | 8268 | { |
3e15518b | 8269 | if (tb.deferred) |
1be17993 JW |
8270 | { |
8271 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8272 | return MATCH_ERROR; | |
8273 | } | |
8274 | ||
8275 | if (!seen_colons) | |
8276 | { | |
8277 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8278 | " at %C"); | |
8279 | return MATCH_ERROR; | |
8280 | } | |
8281 | ||
8282 | m = gfc_match_name (target_buf); | |
8283 | if (m == MATCH_ERROR) | |
8284 | return m; | |
8285 | if (m == MATCH_NO) | |
8286 | { | |
8287 | gfc_error ("Expected binding target after '=>' at %C"); | |
8288 | return MATCH_ERROR; | |
8289 | } | |
8290 | target = target_buf; | |
30b608eb | 8291 | } |
30b608eb | 8292 | |
1be17993 JW |
8293 | /* If no target was found, it has the same name as the binding. */ |
8294 | if (!target) | |
8295 | target = name; | |
30b608eb | 8296 | |
1be17993 JW |
8297 | /* Get the namespace to insert the symbols into. */ |
8298 | ns = block->f2k_derived; | |
8299 | gcc_assert (ns); | |
30b608eb | 8300 | |
1be17993 | 8301 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8302 | if (tb.deferred && !block->attr.abstract) |
1be17993 JW |
8303 | { |
8304 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8305 | "is not ABSTRACT", block->name); | |
8306 | return MATCH_ERROR; | |
8307 | } | |
30b608eb | 8308 | |
1be17993 | 8309 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 8310 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
8311 | be already there but then typebound is still NULL. */ |
8312 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8313 | if (stree && stree->n.tb) |
1be17993 JW |
8314 | { |
8315 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8316 | "the derived type '%s' at %C", name, block->name); | |
8317 | return MATCH_ERROR; | |
8318 | } | |
b0e5fa94 | 8319 | |
1be17993 | 8320 | /* Insert it and set attributes. */ |
30b608eb | 8321 | |
9f23af48 MM |
8322 | if (!stree) |
8323 | { | |
8324 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8325 | gcc_assert (stree); | |
8326 | } | |
3e15518b | 8327 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8328 | |
3e15518b JW |
8329 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8330 | false)) | |
1be17993 | 8331 | return MATCH_ERROR; |
3e15518b | 8332 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f5acf0f2 | 8333 | |
1be17993 JW |
8334 | if (gfc_match_eos () == MATCH_YES) |
8335 | return MATCH_YES; | |
8336 | if (gfc_match_char (',') != MATCH_YES) | |
8337 | goto syntax; | |
e34ccb4c | 8338 | } |
30b608eb | 8339 | |
1be17993 JW |
8340 | syntax: |
8341 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8342 | return MATCH_ERROR; | |
30b608eb DK |
8343 | } |
8344 | ||
8345 | ||
e157f736 DK |
8346 | /* Match a GENERIC procedure binding inside a derived type. */ |
8347 | ||
8348 | match | |
8349 | gfc_match_generic (void) | |
8350 | { | |
8351 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8352 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8353 | gfc_symbol* block; |
8354 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8355 | gfc_typebound_proc* tb; | |
e157f736 | 8356 | gfc_namespace* ns; |
94747289 DK |
8357 | interface_type op_type; |
8358 | gfc_intrinsic_op op; | |
e157f736 DK |
8359 | match m; |
8360 | ||
8361 | /* Check current state. */ | |
8362 | if (gfc_current_state () == COMP_DERIVED) | |
8363 | { | |
8364 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8365 | return MATCH_ERROR; | |
8366 | } | |
8367 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8368 | return MATCH_NO; | |
8369 | block = gfc_state_stack->previous->sym; | |
8370 | ns = block->f2k_derived; | |
8371 | gcc_assert (block && ns); | |
8372 | ||
ff5b6492 MM |
8373 | memset (&tbattr, 0, sizeof (tbattr)); |
8374 | tbattr.where = gfc_current_locus; | |
8375 | ||
e157f736 | 8376 | /* See if we get an access-specifier. */ |
713485cc | 8377 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8378 | if (m == MATCH_ERROR) |
8379 | goto error; | |
8380 | ||
8381 | /* Now the colons, those are required. */ | |
8382 | if (gfc_match (" ::") != MATCH_YES) | |
8383 | { | |
8384 | gfc_error ("Expected '::' at %C"); | |
8385 | goto error; | |
8386 | } | |
8387 | ||
94747289 DK |
8388 | /* Match the binding name; depending on type (operator / generic) format |
8389 | it for future error messages into bind_name. */ | |
f5acf0f2 | 8390 | |
94747289 | 8391 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
8392 | if (m == MATCH_ERROR) |
8393 | return MATCH_ERROR; | |
8394 | if (m == MATCH_NO) | |
8395 | { | |
94747289 | 8396 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8397 | goto error; |
8398 | } | |
8399 | ||
94747289 | 8400 | switch (op_type) |
e157f736 | 8401 | { |
94747289 DK |
8402 | case INTERFACE_GENERIC: |
8403 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8404 | break; | |
f5acf0f2 | 8405 | |
94747289 DK |
8406 | case INTERFACE_USER_OP: |
8407 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8408 | break; | |
f5acf0f2 | 8409 | |
94747289 DK |
8410 | case INTERFACE_INTRINSIC_OP: |
8411 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8412 | gfc_op2string (op)); | |
8413 | break; | |
8414 | ||
8415 | default: | |
8416 | gcc_unreachable (); | |
8417 | } | |
e34ccb4c | 8418 | |
94747289 DK |
8419 | /* Match the required =>. */ |
8420 | if (gfc_match (" =>") != MATCH_YES) | |
8421 | { | |
8422 | gfc_error ("Expected '=>' at %C"); | |
8423 | goto error; | |
8424 | } | |
f5acf0f2 | 8425 | |
94747289 DK |
8426 | /* Try to find existing GENERIC binding with this name / for this operator; |
8427 | if there is something, check that it is another GENERIC and then extend | |
8428 | it rather than building a new node. Otherwise, create it and put it | |
8429 | at the right position. */ | |
8430 | ||
8431 | switch (op_type) | |
8432 | { | |
8433 | case INTERFACE_USER_OP: | |
8434 | case INTERFACE_GENERIC: | |
8435 | { | |
8436 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8437 | gfc_symtree* st; | |
8438 | ||
8439 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8440 | if (st) | |
8441 | { | |
8442 | tb = st->n.tb; | |
8443 | gcc_assert (tb); | |
8444 | } | |
8445 | else | |
8446 | tb = NULL; | |
8447 | ||
8448 | break; | |
8449 | } | |
8450 | ||
8451 | case INTERFACE_INTRINSIC_OP: | |
8452 | tb = ns->tb_op[op]; | |
8453 | break; | |
8454 | ||
8455 | default: | |
8456 | gcc_unreachable (); | |
8457 | } | |
8458 | ||
8459 | if (tb) | |
8460 | { | |
e34ccb4c | 8461 | if (!tb->is_generic) |
e157f736 | 8462 | { |
94747289 | 8463 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 DK |
8464 | gfc_error ("There's already a non-generic procedure with binding name" |
8465 | " '%s' for the derived type '%s' at %C", | |
94747289 | 8466 | bind_name, block->name); |
e157f736 DK |
8467 | goto error; |
8468 | } | |
8469 | ||
e157f736 DK |
8470 | if (tb->access != tbattr.access) |
8471 | { | |
8472 | gfc_error ("Binding at %C must have the same access as already" | |
94747289 | 8473 | " defined binding '%s'", bind_name); |
e157f736 DK |
8474 | goto error; |
8475 | } | |
8476 | } | |
8477 | else | |
8478 | { | |
3e15518b | 8479 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8480 | tb->where = gfc_current_locus; |
8481 | tb->access = tbattr.access; | |
8482 | tb->is_generic = 1; | |
8483 | tb->u.generic = NULL; | |
94747289 DK |
8484 | |
8485 | switch (op_type) | |
8486 | { | |
8487 | case INTERFACE_GENERIC: | |
8488 | case INTERFACE_USER_OP: | |
8489 | { | |
8490 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8491 | gfc_symtree* st; | |
8492 | ||
8493 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8494 | name); | |
8495 | gcc_assert (st); | |
8496 | st->n.tb = tb; | |
8497 | ||
8498 | break; | |
8499 | } | |
f5acf0f2 | 8500 | |
94747289 DK |
8501 | case INTERFACE_INTRINSIC_OP: |
8502 | ns->tb_op[op] = tb; | |
8503 | break; | |
8504 | ||
8505 | default: | |
8506 | gcc_unreachable (); | |
8507 | } | |
e157f736 DK |
8508 | } |
8509 | ||
8510 | /* Now, match all following names as specific targets. */ | |
8511 | do | |
8512 | { | |
8513 | gfc_symtree* target_st; | |
8514 | gfc_tbp_generic* target; | |
8515 | ||
8516 | m = gfc_match_name (name); | |
8517 | if (m == MATCH_ERROR) | |
8518 | goto error; | |
8519 | if (m == MATCH_NO) | |
8520 | { | |
8521 | gfc_error ("Expected specific binding name at %C"); | |
8522 | goto error; | |
8523 | } | |
8524 | ||
e34ccb4c | 8525 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8526 | |
8527 | /* See if this is a duplicate specification. */ | |
8528 | for (target = tb->u.generic; target; target = target->next) | |
8529 | if (target_st == target->specific_st) | |
8530 | { | |
8531 | gfc_error ("'%s' already defined as specific binding for the" | |
94747289 | 8532 | " generic '%s' at %C", name, bind_name); |
e157f736 DK |
8533 | goto error; |
8534 | } | |
8535 | ||
e157f736 DK |
8536 | target = gfc_get_tbp_generic (); |
8537 | target->specific_st = target_st; | |
8538 | target->specific = NULL; | |
8539 | target->next = tb->u.generic; | |
218e1228 TB |
8540 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8541 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
8542 | tb->u.generic = target; |
8543 | } | |
8544 | while (gfc_match (" ,") == MATCH_YES); | |
8545 | ||
8546 | /* Here should be the end. */ | |
8547 | if (gfc_match_eos () != MATCH_YES) | |
8548 | { | |
8549 | gfc_error ("Junk after GENERIC binding at %C"); | |
8550 | goto error; | |
8551 | } | |
8552 | ||
8553 | return MATCH_YES; | |
8554 | ||
8555 | error: | |
8556 | return MATCH_ERROR; | |
8557 | } | |
8558 | ||
8559 | ||
34523524 DK |
8560 | /* Match a FINAL declaration inside a derived type. */ |
8561 | ||
8562 | match | |
8563 | gfc_match_final_decl (void) | |
8564 | { | |
8565 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8566 | gfc_symbol* sym; | |
8567 | match m; | |
8568 | gfc_namespace* module_ns; | |
8569 | bool first, last; | |
30b608eb | 8570 | gfc_symbol* block; |
34523524 | 8571 | |
33344e0f JW |
8572 | if (gfc_current_form == FORM_FREE) |
8573 | { | |
8574 | char c = gfc_peek_ascii_char (); | |
8575 | if (!gfc_is_whitespace (c) && c != ':') | |
8576 | return MATCH_NO; | |
8577 | } | |
f5acf0f2 | 8578 | |
30b608eb | 8579 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8580 | { |
33344e0f JW |
8581 | if (gfc_current_form == FORM_FIXED) |
8582 | return MATCH_NO; | |
8583 | ||
34523524 | 8584 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8585 | "CONTAINS section"); |
34523524 DK |
8586 | return MATCH_ERROR; |
8587 | } | |
8588 | ||
30b608eb DK |
8589 | block = gfc_state_stack->previous->sym; |
8590 | gcc_assert (block); | |
34523524 | 8591 | |
30b608eb DK |
8592 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8593 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8594 | { |
8595 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8596 | " specification part of a MODULE"); | |
8597 | return MATCH_ERROR; | |
8598 | } | |
8599 | ||
8600 | module_ns = gfc_current_ns; | |
8601 | gcc_assert (module_ns); | |
8602 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8603 | ||
8604 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8605 | if (gfc_match (" ::") == MATCH_ERROR) | |
8606 | return MATCH_ERROR; | |
8607 | ||
8608 | /* Match the sequence of procedure names. */ | |
8609 | first = true; | |
8610 | last = false; | |
8611 | do | |
8612 | { | |
8613 | gfc_finalizer* f; | |
8614 | ||
8615 | if (first && gfc_match_eos () == MATCH_YES) | |
8616 | { | |
8617 | gfc_error ("Empty FINAL at %C"); | |
8618 | return MATCH_ERROR; | |
8619 | } | |
8620 | ||
8621 | m = gfc_match_name (name); | |
8622 | if (m == MATCH_NO) | |
8623 | { | |
8624 | gfc_error ("Expected module procedure name at %C"); | |
8625 | return MATCH_ERROR; | |
8626 | } | |
8627 | else if (m != MATCH_YES) | |
8628 | return MATCH_ERROR; | |
8629 | ||
8630 | if (gfc_match_eos () == MATCH_YES) | |
8631 | last = true; | |
8632 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8633 | { | |
8634 | gfc_error ("Expected ',' at %C"); | |
8635 | return MATCH_ERROR; | |
8636 | } | |
8637 | ||
8638 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8639 | { | |
8640 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8641 | return MATCH_ERROR; | |
8642 | } | |
8643 | ||
8644 | /* Mark the symbol as module procedure. */ | |
8645 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 8646 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
8647 | return MATCH_ERROR; |
8648 | ||
8649 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 8650 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 8651 | if (f->proc_sym == sym) |
34523524 DK |
8652 | { |
8653 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8654 | name); | |
8655 | return MATCH_ERROR; | |
8656 | } | |
8657 | ||
8658 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 8659 | gcc_assert (block->f2k_derived); |
34523524 | 8660 | ++sym->refs; |
ece3f663 | 8661 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
8662 | f->proc_sym = sym; |
8663 | f->proc_tree = NULL; | |
34523524 | 8664 | f->where = gfc_current_locus; |
30b608eb DK |
8665 | f->next = block->f2k_derived->finalizers; |
8666 | block->f2k_derived->finalizers = f; | |
34523524 DK |
8667 | |
8668 | first = false; | |
8669 | } | |
8670 | while (!last); | |
8671 | ||
8672 | return MATCH_YES; | |
8673 | } | |
08a6b8e0 TB |
8674 | |
8675 | ||
8676 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
8677 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
8678 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8679 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8680 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8681 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8682 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
8683 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
8684 | }; |
8685 | ||
8686 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8687 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8688 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8689 | ||
8690 | TODO: We should support all GCC attributes using the same syntax for | |
8691 | the attribute list, i.e. the list in C | |
8692 | __attributes(( attribute-list )) | |
8693 | matches then | |
8694 | !GCC$ ATTRIBUTES attribute-list :: | |
8695 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8696 | saved into a TREE. | |
8697 | ||
8698 | As there is absolutely no risk of confusion, we should never return | |
8699 | MATCH_NO. */ | |
8700 | match | |
8701 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 8702 | { |
08a6b8e0 TB |
8703 | symbol_attribute attr; |
8704 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8705 | unsigned id; | |
8706 | gfc_symbol *sym; | |
8707 | match m; | |
8708 | ||
8709 | gfc_clear_attr (&attr); | |
8710 | for(;;) | |
8711 | { | |
8712 | char ch; | |
8713 | ||
8714 | if (gfc_match_name (name) != MATCH_YES) | |
8715 | return MATCH_ERROR; | |
8716 | ||
8717 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8718 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8719 | break; | |
8720 | ||
8721 | if (id == EXT_ATTR_LAST) | |
8722 | { | |
8723 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8724 | return MATCH_ERROR; | |
8725 | } | |
8726 | ||
524af0d6 | 8727 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
8728 | return MATCH_ERROR; |
8729 | ||
8730 | gfc_gobble_whitespace (); | |
8731 | ch = gfc_next_ascii_char (); | |
8732 | if (ch == ':') | |
8733 | { | |
8734 | /* This is the successful exit condition for the loop. */ | |
8735 | if (gfc_next_ascii_char () == ':') | |
8736 | break; | |
8737 | } | |
8738 | ||
8739 | if (ch == ',') | |
8740 | continue; | |
8741 | ||
8742 | goto syntax; | |
8743 | } | |
8744 | ||
8745 | if (gfc_match_eos () == MATCH_YES) | |
8746 | goto syntax; | |
8747 | ||
8748 | for(;;) | |
8749 | { | |
8750 | m = gfc_match_name (name); | |
8751 | if (m != MATCH_YES) | |
8752 | return m; | |
8753 | ||
8754 | if (find_special (name, &sym, true)) | |
8755 | return MATCH_ERROR; | |
f5acf0f2 | 8756 | |
08a6b8e0 TB |
8757 | sym->attr.ext_attr |= attr.ext_attr; |
8758 | ||
8759 | if (gfc_match_eos () == MATCH_YES) | |
8760 | break; | |
8761 | ||
8762 | if (gfc_match_char (',') != MATCH_YES) | |
8763 | goto syntax; | |
8764 | } | |
8765 | ||
8766 | return MATCH_YES; | |
8767 | ||
8768 | syntax: | |
8769 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8770 | return MATCH_ERROR; | |
8771 | } |