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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 | } | |
513 | ||
f1f39033 PT |
514 | if (gfc_implicit_pure (NULL)) |
515 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
516 | ||
ed0e3607 | 517 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 518 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 519 | { |
cede9502 | 520 | free (newdata); |
ed0e3607 AL |
521 | return MATCH_ERROR; |
522 | } | |
523 | ||
294fbfc8 TS |
524 | /* Chain in namespace list of DATA initializers. */ |
525 | newdata->next = gfc_current_ns->data; | |
526 | gfc_current_ns->data = newdata; | |
527 | ||
528 | return m; | |
529 | } | |
530 | ||
636dff67 | 531 | |
294fbfc8 | 532 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 533 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 534 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 535 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
536 | |
537 | match | |
538 | gfc_match_data (void) | |
539 | { | |
7b901ac4 | 540 | gfc_data *new_data; |
294fbfc8 TS |
541 | match m; |
542 | ||
ca39e6f2 | 543 | set_in_match_data (true); |
2220652d | 544 | |
294fbfc8 TS |
545 | for (;;) |
546 | { | |
7b901ac4 KG |
547 | new_data = gfc_get_data (); |
548 | new_data->where = gfc_current_locus; | |
294fbfc8 | 549 | |
7b901ac4 | 550 | m = top_var_list (new_data); |
294fbfc8 TS |
551 | if (m != MATCH_YES) |
552 | goto cleanup; | |
553 | ||
7b901ac4 | 554 | m = top_val_list (new_data); |
294fbfc8 TS |
555 | if (m != MATCH_YES) |
556 | goto cleanup; | |
557 | ||
7b901ac4 KG |
558 | new_data->next = gfc_current_ns->data; |
559 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
560 | |
561 | if (gfc_match_eos () == MATCH_YES) | |
562 | break; | |
563 | ||
564 | gfc_match_char (','); /* Optional comma */ | |
565 | } | |
566 | ||
ca39e6f2 | 567 | set_in_match_data (false); |
2220652d | 568 | |
294fbfc8 TS |
569 | if (gfc_pure (NULL)) |
570 | { | |
571 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
572 | return MATCH_ERROR; | |
573 | } | |
574 | ||
f1f39033 PT |
575 | if (gfc_implicit_pure (NULL)) |
576 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
577 | ||
294fbfc8 TS |
578 | return MATCH_YES; |
579 | ||
580 | cleanup: | |
ca39e6f2 | 581 | set_in_match_data (false); |
7b901ac4 | 582 | gfc_free_data (new_data); |
294fbfc8 TS |
583 | return MATCH_ERROR; |
584 | } | |
585 | ||
586 | ||
587 | /************************ Declaration statements *********************/ | |
588 | ||
d3a9eea2 | 589 | |
eea58adb | 590 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 591 | |
524af0d6 | 592 | static bool |
d3a9eea2 TB |
593 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
594 | { | |
595 | int i; | |
596 | ||
63fbf586 TB |
597 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
598 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
599 | { | |
600 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 601 | return false; |
63fbf586 | 602 | } |
c62c6622 | 603 | |
d3a9eea2 TB |
604 | if (to->rank == 0 && from->rank > 0) |
605 | { | |
606 | to->rank = from->rank; | |
607 | to->type = from->type; | |
608 | to->cray_pointee = from->cray_pointee; | |
609 | to->cp_was_assumed = from->cp_was_assumed; | |
610 | ||
611 | for (i = 0; i < to->corank; i++) | |
612 | { | |
613 | to->lower[from->rank + i] = to->lower[i]; | |
614 | to->upper[from->rank + i] = to->upper[i]; | |
615 | } | |
616 | for (i = 0; i < from->rank; i++) | |
617 | { | |
618 | if (copy) | |
619 | { | |
620 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
621 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
622 | } | |
623 | else | |
624 | { | |
625 | to->lower[i] = from->lower[i]; | |
626 | to->upper[i] = from->upper[i]; | |
627 | } | |
628 | } | |
629 | } | |
630 | else if (to->corank == 0 && from->corank > 0) | |
631 | { | |
632 | to->corank = from->corank; | |
633 | to->cotype = from->cotype; | |
634 | ||
635 | for (i = 0; i < from->corank; i++) | |
636 | { | |
637 | if (copy) | |
638 | { | |
639 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
640 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
641 | } | |
642 | else | |
643 | { | |
644 | to->lower[to->rank + i] = from->lower[i]; | |
645 | to->upper[to->rank + i] = from->upper[i]; | |
646 | } | |
647 | } | |
648 | } | |
63fbf586 | 649 | |
524af0d6 | 650 | return true; |
d3a9eea2 TB |
651 | } |
652 | ||
653 | ||
6de9cd9a DN |
654 | /* Match an intent specification. Since this can only happen after an |
655 | INTENT word, a legal intent-spec must follow. */ | |
656 | ||
657 | static sym_intent | |
658 | match_intent_spec (void) | |
659 | { | |
660 | ||
661 | if (gfc_match (" ( in out )") == MATCH_YES) | |
662 | return INTENT_INOUT; | |
663 | if (gfc_match (" ( in )") == MATCH_YES) | |
664 | return INTENT_IN; | |
665 | if (gfc_match (" ( out )") == MATCH_YES) | |
666 | return INTENT_OUT; | |
667 | ||
668 | gfc_error ("Bad INTENT specification at %C"); | |
669 | return INTENT_UNKNOWN; | |
670 | } | |
671 | ||
672 | ||
673 | /* Matches a character length specification, which is either a | |
e69afb29 | 674 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
675 | |
676 | static match | |
e69afb29 | 677 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 678 | { |
cba28dad JD |
679 | match m; |
680 | ||
e69afb29 SK |
681 | *expr = NULL; |
682 | *deferred = false; | |
683 | ||
6de9cd9a | 684 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
685 | return MATCH_YES; |
686 | ||
687 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 688 | { |
524af0d6 JB |
689 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type " |
690 | "parameter at %C")) | |
e69afb29 SK |
691 | return MATCH_ERROR; |
692 | ||
693 | *deferred = true; | |
694 | ||
6de9cd9a DN |
695 | return MATCH_YES; |
696 | } | |
697 | ||
cba28dad | 698 | m = gfc_match_expr (expr); |
f37e928c DK |
699 | |
700 | if (m == MATCH_YES | |
524af0d6 | 701 | && !gfc_expr_check_typed (*expr, gfc_current_ns, false)) |
f37e928c DK |
702 | return MATCH_ERROR; |
703 | ||
cba28dad JD |
704 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
705 | { | |
706 | if ((*expr)->value.function.actual | |
707 | && (*expr)->value.function.actual->expr->symtree) | |
708 | { | |
709 | gfc_expr *e; | |
710 | e = (*expr)->value.function.actual->expr; | |
711 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
712 | && e->expr_type == EXPR_VARIABLE) | |
713 | { | |
714 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
715 | goto syntax; | |
716 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
717 | && e->symtree->n.sym->ts.u.cl |
718 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
cba28dad JD |
719 | goto syntax; |
720 | } | |
721 | } | |
722 | } | |
723 | return m; | |
724 | ||
725 | syntax: | |
726 | gfc_error ("Conflict in attributes of function argument at %C"); | |
727 | return MATCH_ERROR; | |
6de9cd9a DN |
728 | } |
729 | ||
730 | ||
731 | /* A character length is a '*' followed by a literal integer or a | |
732 | char_len_param_value in parenthesis. */ | |
733 | ||
734 | static match | |
62732c30 | 735 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 736 | { |
5cf54585 | 737 | int length; |
6de9cd9a DN |
738 | match m; |
739 | ||
f5acf0f2 | 740 | *deferred = false; |
6de9cd9a DN |
741 | m = gfc_match_char ('*'); |
742 | if (m != MATCH_YES) | |
743 | return m; | |
744 | ||
5cf54585 | 745 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
746 | if (m == MATCH_ERROR) |
747 | return m; | |
748 | ||
749 | if (m == MATCH_YES) | |
750 | { | |
62732c30 | 751 | if (obsolescent_check |
524af0d6 | 752 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 753 | return MATCH_ERROR; |
b7e75771 | 754 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
755 | return m; |
756 | } | |
757 | ||
758 | if (gfc_match_char ('(') == MATCH_NO) | |
759 | goto syntax; | |
760 | ||
e69afb29 | 761 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
762 | if (m != MATCH_YES && gfc_matching_function) |
763 | { | |
764 | gfc_undo_symbols (); | |
765 | m = MATCH_YES; | |
766 | } | |
767 | ||
6de9cd9a DN |
768 | if (m == MATCH_ERROR) |
769 | return m; | |
770 | if (m == MATCH_NO) | |
771 | goto syntax; | |
772 | ||
773 | if (gfc_match_char (')') == MATCH_NO) | |
774 | { | |
775 | gfc_free_expr (*expr); | |
776 | *expr = NULL; | |
777 | goto syntax; | |
778 | } | |
779 | ||
780 | return MATCH_YES; | |
781 | ||
782 | syntax: | |
783 | gfc_error ("Syntax error in character length specification at %C"); | |
784 | return MATCH_ERROR; | |
785 | } | |
786 | ||
787 | ||
9e35b386 EE |
788 | /* Special subroutine for finding a symbol. Check if the name is found |
789 | in the current name space. If not, and we're compiling a function or | |
790 | subroutine and the parent compilation unit is an interface, then check | |
791 | to see if the name we've been given is the name of the interface | |
792 | (located in another namespace). */ | |
6de9cd9a DN |
793 | |
794 | static int | |
08a6b8e0 | 795 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
796 | { |
797 | gfc_state_data *s; | |
08a6b8e0 | 798 | gfc_symtree *st; |
9e35b386 | 799 | int i; |
6de9cd9a | 800 | |
08a6b8e0 | 801 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 802 | if (i == 0) |
08a6b8e0 TB |
803 | { |
804 | *result = st ? st->n.sym : NULL; | |
805 | goto end; | |
806 | } | |
d51347f9 | 807 | |
6de9cd9a DN |
808 | if (gfc_current_state () != COMP_SUBROUTINE |
809 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 810 | goto end; |
6de9cd9a DN |
811 | |
812 | s = gfc_state_stack->previous; | |
813 | if (s == NULL) | |
9e35b386 | 814 | goto end; |
6de9cd9a DN |
815 | |
816 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 817 | goto end; |
6de9cd9a | 818 | if (s->sym == NULL) |
66e4ab31 | 819 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
820 | |
821 | if (strcmp (name, s->sym->name) == 0) | |
822 | { | |
823 | *result = s->sym; | |
824 | return 0; | |
825 | } | |
826 | ||
9e35b386 EE |
827 | end: |
828 | return i; | |
6de9cd9a DN |
829 | } |
830 | ||
831 | ||
832 | /* Special subroutine for getting a symbol node associated with a | |
833 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
834 | symbol is created in the parent using with symtree node in the | |
835 | child unit pointing to the symbol. If the current namespace has no | |
836 | parent, then the symbol is just created in the current unit. */ | |
837 | ||
838 | static int | |
636dff67 | 839 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
840 | { |
841 | gfc_symtree *st; | |
842 | gfc_symbol *sym; | |
a7ca4d8d | 843 | int rc = 0; |
6de9cd9a | 844 | |
1a492601 PT |
845 | /* Module functions have to be left in their own namespace because |
846 | they have potentially (almost certainly!) already been referenced. | |
847 | In this sense, they are rather like external functions. This is | |
848 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
849 | space is set to point to the master function, so that the fake | |
850 | result mechanism can work. */ | |
851 | if (module_fcn_entry) | |
6c12686b PT |
852 | { |
853 | /* Present if entry is declared to be a module procedure. */ | |
854 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 855 | |
6c12686b PT |
856 | if (*result == NULL) |
857 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 858 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
859 | && (*result)->ts.type == BT_UNKNOWN |
860 | && sym->attr.flavor == FL_UNKNOWN) | |
861 | /* Pick up the typespec for the entry, if declared in the function | |
862 | body. Note that this symbol is FL_UNKNOWN because it will | |
863 | only have appeared in a type declaration. The local symtree | |
864 | is set to point to the module symbol and a unique symtree | |
865 | to the local version. This latter ensures a correct clearing | |
866 | of the symbols. */ | |
2e32a71e PT |
867 | { |
868 | /* If the ENTRY proceeds its specification, we need to ensure | |
869 | that this does not raise a "has no IMPLICIT type" error. */ | |
870 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 871 | sym->attr.untyped = 1; |
2e32a71e | 872 | |
0e5a218b | 873 | (*result)->ts = sym->ts; |
2e32a71e PT |
874 | |
875 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 876 | the ENTRY precede its specification, the specification |
2e32a71e PT |
877 | can be applied. */ |
878 | (*result)->ns = gfc_current_ns; | |
879 | ||
880 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
881 | st->n.sym = *result; | |
882 | st = gfc_get_unique_symtree (gfc_current_ns); | |
883 | st->n.sym = sym; | |
884 | } | |
6c12686b | 885 | } |
68ea355b PT |
886 | else |
887 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 888 | |
a7ca4d8d PT |
889 | if (rc) |
890 | return rc; | |
891 | ||
68ea355b | 892 | sym = *result; |
6de9cd9a | 893 | |
7b901ac4 | 894 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
68ea355b | 895 | { |
cda7004b PT |
896 | /* Trap another encompassed procedure with the same name. All |
897 | these conditions are necessary to avoid picking up an entry | |
898 | whose name clashes with that of the encompassing procedure; | |
899 | this is handled using gsymbols to register unique,globally | |
900 | accessible names. */ | |
68ea355b | 901 | if (sym->attr.flavor != 0 |
636dff67 SK |
902 | && sym->attr.proc != 0 |
903 | && (sym->attr.subroutine || sym->attr.function) | |
904 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
68ea355b PT |
905 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
906 | name, &sym->declared_at); | |
907 | ||
fd3e70af JD |
908 | /* Trap a procedure with a name the same as interface in the |
909 | encompassing scope. */ | |
910 | if (sym->attr.generic != 0 | |
2305fa31 JD |
911 | && (sym->attr.subroutine || sym->attr.function) |
912 | && !sym->attr.mod_proc) | |
fd3e70af JD |
913 | gfc_error_now ("Name '%s' at %C is already defined" |
914 | " as a generic interface at %L", | |
915 | name, &sym->declared_at); | |
916 | ||
68ea355b PT |
917 | /* Trap declarations of attributes in encompassing scope. The |
918 | signature for this is that ts.kind is set. Legitimate | |
919 | references only set ts.type. */ | |
920 | if (sym->ts.kind != 0 | |
636dff67 SK |
921 | && !sym->attr.implicit_type |
922 | && sym->attr.proc == 0 | |
923 | && gfc_current_ns->parent != NULL | |
924 | && sym->attr.access == 0 | |
925 | && !module_fcn_entry) | |
926 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
927 | "and must not have attributes declared at %L", | |
68ea355b PT |
928 | name, &sym->declared_at); |
929 | } | |
930 | ||
931 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
932 | return rc; | |
6de9cd9a | 933 | |
1a492601 PT |
934 | /* Module function entries will already have a symtree in |
935 | the current namespace but will need one at module level. */ | |
936 | if (module_fcn_entry) | |
6c12686b PT |
937 | { |
938 | /* Present if entry is declared to be a module procedure. */ | |
939 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
940 | if (st == NULL) | |
941 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
942 | } | |
1a492601 PT |
943 | else |
944 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 945 | |
6de9cd9a DN |
946 | st->n.sym = sym; |
947 | sym->refs++; | |
948 | ||
66e4ab31 | 949 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 950 | |
1a492601 | 951 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
952 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
953 | && sym->attr.proc != PROC_MODULE) | |
954 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 955 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
956 | rc = 2; |
957 | ||
958 | return rc; | |
959 | } | |
960 | ||
961 | ||
a8b3b0b6 CR |
962 | /* Verify that the given symbol representing a parameter is C |
963 | interoperable, by checking to see if it was marked as such after | |
964 | its declaration. If the given symbol is not interoperable, a | |
965 | warning is reported, thus removing the need to return the status to | |
966 | the calling function. The standard does not require the user use | |
967 | one of the iso_c_binding named constants to declare an | |
968 | interoperable parameter, but we can't be sure if the param is C | |
969 | interop or not if the user doesn't. For example, integer(4) may be | |
970 | legal Fortran, but doesn't have meaning in C. It may interop with | |
971 | a number of the C types, which causes a problem because the | |
972 | compiler can't know which one. This code is almost certainly not | |
973 | portable, and the user will get what they deserve if the C type | |
974 | across platforms isn't always interoperable with integer(4). If | |
975 | the user had used something like integer(c_int) or integer(c_long), | |
976 | the compiler could have automatically handled the varying sizes | |
977 | across platforms. */ | |
978 | ||
524af0d6 | 979 | bool |
00820a2a | 980 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
981 | { |
982 | int is_c_interop = 0; | |
524af0d6 | 983 | bool retval = true; |
a8b3b0b6 CR |
984 | |
985 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
986 | Don't repeat the checks here. */ | |
987 | if (sym->attr.implicit_type) | |
524af0d6 | 988 | return true; |
f5acf0f2 | 989 | |
a8b3b0b6 CR |
990 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
991 | they're interoperable if they're BIND(C) and their params are all | |
992 | interoperable. */ | |
993 | if (sym->attr.flavor == FL_PROCEDURE) | |
994 | { | |
995 | if (sym->attr.is_bind_c == 0) | |
996 | { | |
997 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
998 | "attribute to be C interoperable", sym->name, | |
999 | &(sym->declared_at)); | |
f5acf0f2 | 1000 | |
524af0d6 | 1001 | return false; |
a8b3b0b6 CR |
1002 | } |
1003 | else | |
1004 | { | |
1005 | if (sym->attr.is_c_interop == 1) | |
1006 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1007 | return true; |
a8b3b0b6 CR |
1008 | else |
1009 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1010 | sym->common_block); | |
1011 | } | |
1012 | } | |
f5acf0f2 | 1013 | |
a8b3b0b6 CR |
1014 | /* See if we've stored a reference to a procedure that owns sym. */ |
1015 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1016 | { | |
1017 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1018 | { | |
524af0d6 | 1019 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1020 | |
1021 | if (is_c_interop != 1) | |
1022 | { | |
1023 | /* Make personalized messages to give better feedback. */ | |
1024 | if (sym->ts.type == BT_DERIVED) | |
00820a2a JW |
1025 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1026 | "BIND(C) procedure '%s' but is not C interoperable " | |
a8b3b0b6 CR |
1027 | "because derived type '%s' is not C interoperable", |
1028 | sym->name, &(sym->declared_at), | |
f5acf0f2 | 1029 | sym->ns->proc_name->name, |
bc21d315 | 1030 | sym->ts.u.derived->name); |
00820a2a JW |
1031 | else if (sym->ts.type == BT_CLASS) |
1032 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1033 | "BIND(C) procedure '%s' but is not C interoperable " | |
1034 | "because it is polymorphic", | |
1035 | sym->name, &(sym->declared_at), | |
1036 | sym->ns->proc_name->name); | |
7fe3aa08 TB |
1037 | else if (gfc_option.warn_c_binding_type) |
1038 | gfc_warning ("Variable '%s' at %L is a dummy argument of the " | |
a8b3b0b6 CR |
1039 | "BIND(C) procedure '%s' but may not be C " |
1040 | "interoperable", | |
1041 | sym->name, &(sym->declared_at), | |
1042 | sym->ns->proc_name->name); | |
1043 | } | |
aa5e22f0 CR |
1044 | |
1045 | /* Character strings are only C interoperable if they have a | |
1046 | length of 1. */ | |
1047 | if (sym->ts.type == BT_CHARACTER) | |
1048 | { | |
bc21d315 | 1049 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1050 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1051 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1052 | { | |
1053 | gfc_error ("Character argument '%s' at %L " | |
1054 | "must be length 1 because " | |
1055 | "procedure '%s' is BIND(C)", | |
1056 | sym->name, &sym->declared_at, | |
1057 | sym->ns->proc_name->name); | |
524af0d6 | 1058 | retval = false; |
aa5e22f0 CR |
1059 | } |
1060 | } | |
1061 | ||
a8b3b0b6 CR |
1062 | /* We have to make sure that any param to a bind(c) routine does |
1063 | not have the allocatable, pointer, or optional attributes, | |
1064 | according to J3/04-007, section 5.1. */ | |
60f6ca95 TB |
1065 | if (sym->attr.allocatable == 1 |
1066 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' at %L with " | |
1067 | "ALLOCATABLE attribute in procedure '%s' " | |
1068 | "with BIND(C)", sym->name, | |
1069 | &(sym->declared_at), | |
1070 | sym->ns->proc_name->name)) | |
1071 | retval = false; | |
1072 | ||
1073 | if (sym->attr.pointer == 1 | |
1074 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' at %L with " | |
1075 | "POINTER attribute in procedure '%s' " | |
1076 | "with BIND(C)", sym->name, | |
1077 | &(sym->declared_at), | |
1078 | sym->ns->proc_name->name)) | |
1079 | retval = false; | |
1080 | ||
1081 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1082 | { |
60f6ca95 TB |
1083 | gfc_error ("Scalar variable '%s' at %L with POINTER or " |
1084 | "ALLOCATABLE in procedure '%s' with BIND(C) is not yet" | |
1085 | " supported", sym->name, &(sym->declared_at), | |
a8b3b0b6 | 1086 | sym->ns->proc_name->name); |
524af0d6 | 1087 | retval = false; |
a8b3b0b6 CR |
1088 | } |
1089 | ||
2e8d9212 | 1090 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1091 | { |
2e8d9212 TB |
1092 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1093 | "and the VALUE attribute because procedure '%s' " | |
1094 | "is BIND(C)", sym->name, &(sym->declared_at), | |
a8b3b0b6 | 1095 | sym->ns->proc_name->name); |
524af0d6 | 1096 | retval = false; |
a8b3b0b6 | 1097 | } |
2e8d9212 | 1098 | else if (sym->attr.optional == 1 |
524af0d6 JB |
1099 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' " |
1100 | "at %L with OPTIONAL attribute in " | |
1101 | "procedure '%s' which is BIND(C)", | |
1102 | sym->name, &(sym->declared_at), | |
1103 | sym->ns->proc_name->name)) | |
1104 | retval = false; | |
a8b3b0b6 CR |
1105 | |
1106 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1107 | either assumed size or explicit shape. Deferred shape is already |
1108 | covered by the pointer/allocatable attribute. */ | |
1109 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
524af0d6 JB |
1110 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array '%s' " |
1111 | "at %L as dummy argument to the BIND(C) " | |
1112 | "procedure '%s' at %L", sym->name, | |
1113 | &(sym->declared_at), | |
1114 | sym->ns->proc_name->name, | |
1115 | &(sym->ns->proc_name->declared_at))) | |
1116 | retval = false; | |
a8b3b0b6 CR |
1117 | } |
1118 | } | |
1119 | ||
1120 | return retval; | |
1121 | } | |
1122 | ||
1123 | ||
cf2b3c22 | 1124 | |
a8b3b0b6 | 1125 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1126 | |
524af0d6 | 1127 | static bool |
e69afb29 | 1128 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1129 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1130 | { |
1131 | symbol_attribute attr; | |
1132 | gfc_symbol *sym; | |
1133 | ||
9e35b386 | 1134 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1135 | return false; |
6de9cd9a | 1136 | |
66e4ab31 | 1137 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1138 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1139 | && (sym->attr.implicit_type == 0 |
1140 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1141 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1142 | return false; | |
6de9cd9a DN |
1143 | |
1144 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1145 | { |
1146 | sym->ts.u.cl = cl; | |
1147 | sym->ts.deferred = cl_deferred; | |
1148 | } | |
6de9cd9a DN |
1149 | |
1150 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1151 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1152 | return false; | |
6de9cd9a DN |
1153 | *as = NULL; |
1154 | ||
1155 | /* Add attribute to symbol. The copy is so that we can reset the | |
1156 | dimension attribute. */ | |
1157 | attr = current_attr; | |
1158 | attr.dimension = 0; | |
be59db2d | 1159 | attr.codimension = 0; |
6de9cd9a | 1160 | |
524af0d6 JB |
1161 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1162 | return false; | |
6de9cd9a | 1163 | |
a8b3b0b6 CR |
1164 | /* Finish any work that may need to be done for the binding label, |
1165 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1166 | is made, and before the symbol name (for data decls), so the | |
1167 | current_ts is holding the binding label, or nothing if the | |
1168 | name= attr wasn't given. Therefore, test here if we're dealing | |
1169 | with a bind(c) and make sure the binding label is set correctly. */ | |
1170 | if (sym->attr.is_bind_c == 1) | |
1171 | { | |
62603fae | 1172 | if (!sym->binding_label) |
a8b3b0b6 | 1173 | { |
ad4a2f64 TB |
1174 | /* Set the binding label and verify that if a NAME= was specified |
1175 | then only one identifier was in the entity-decl-list. */ | |
524af0d6 JB |
1176 | if (!set_binding_label (&sym->binding_label, sym->name, |
1177 | num_idents_on_line)) | |
1178 | return false; | |
a8b3b0b6 CR |
1179 | } |
1180 | } | |
1181 | ||
1182 | /* See if we know we're in a common block, and if it's a bind(c) | |
1183 | common then we need to make sure we're an interoperable type. */ | |
1184 | if (sym->attr.in_common == 1) | |
1185 | { | |
1186 | /* Test the common block object. */ | |
1187 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1188 | && sym->ts.is_c_interop != 1) | |
1189 | { | |
1190 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1191 | "must be declared with a C interoperable " | |
1192 | "kind since common block '%s' is BIND(C)", | |
1193 | sym->name, sym->common_block->name, | |
1194 | sym->common_block->name); | |
1195 | gfc_clear_error (); | |
1196 | } | |
1197 | } | |
1198 | ||
9a3db5a3 PT |
1199 | sym->attr.implied_index = 0; |
1200 | ||
528622fd | 1201 | if (sym->ts.type == BT_CLASS) |
96d9b22c | 1202 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
cf2b3c22 | 1203 | |
524af0d6 | 1204 | return true; |
6de9cd9a DN |
1205 | } |
1206 | ||
636dff67 | 1207 | |
df7cc9b5 | 1208 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1209 | truncated. If we're inside an array constructor without a typespec, we |
1210 | additionally check that all elements have the same length; check_len -1 | |
1211 | means no checking. */ | |
df7cc9b5 FW |
1212 | |
1213 | void | |
d2848082 | 1214 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1215 | { |
00660189 | 1216 | gfc_char_t *s; |
df7cc9b5 FW |
1217 | int slen; |
1218 | ||
1219 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1220 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1221 | |
1222 | slen = expr->value.character.length; | |
1223 | if (len != slen) | |
1224 | { | |
00660189 FXC |
1225 | s = gfc_get_wide_string (len + 1); |
1226 | memcpy (s, expr->value.character.string, | |
1227 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1228 | if (len > slen) |
00660189 | 1229 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d PT |
1230 | |
1231 | if (gfc_option.warn_character_truncation && slen > len) | |
1232 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1233 | "(%d/%d)", &expr->where, slen, len); | |
1234 | ||
1235 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1236 | initializers. */ | |
d2848082 DK |
1237 | if (check_len != -1 && slen != check_len |
1238 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1239 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1240 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1241 | &expr->where, slen, check_len); |
2220652d | 1242 | |
150675a8 | 1243 | s[len] = '\0'; |
cede9502 | 1244 | free (expr->value.character.string); |
df7cc9b5 FW |
1245 | expr->value.character.string = s; |
1246 | expr->value.character.length = len; | |
1247 | } | |
1248 | } | |
6de9cd9a | 1249 | |
25d8f0a2 | 1250 | |
d51347f9 | 1251 | /* Function to create and update the enumerator history |
25d8f0a2 | 1252 | using the information passed as arguments. |
d51347f9 TB |
1253 | Pointer "max_enum" is also updated, to point to |
1254 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1255 | |
1256 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1257 | INIT points to its enumerator value. */ |
25d8f0a2 | 1258 | |
d51347f9 | 1259 | static void |
636dff67 | 1260 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1261 | { |
1262 | enumerator_history *new_enum_history; | |
1263 | gcc_assert (sym != NULL && init != NULL); | |
1264 | ||
ece3f663 | 1265 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1266 | |
1267 | new_enum_history->sym = sym; | |
1268 | new_enum_history->initializer = init; | |
1269 | new_enum_history->next = NULL; | |
1270 | ||
1271 | if (enum_history == NULL) | |
1272 | { | |
1273 | enum_history = new_enum_history; | |
1274 | max_enum = enum_history; | |
1275 | } | |
1276 | else | |
1277 | { | |
1278 | new_enum_history->next = enum_history; | |
1279 | enum_history = new_enum_history; | |
1280 | ||
d51347f9 | 1281 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1282 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1283 | max_enum = new_enum_history; |
25d8f0a2 TS |
1284 | } |
1285 | } | |
1286 | ||
1287 | ||
d51347f9 | 1288 | /* Function to free enum kind history. */ |
25d8f0a2 | 1289 | |
d51347f9 | 1290 | void |
636dff67 | 1291 | gfc_free_enum_history (void) |
25d8f0a2 | 1292 | { |
d51347f9 TB |
1293 | enumerator_history *current = enum_history; |
1294 | enumerator_history *next; | |
25d8f0a2 TS |
1295 | |
1296 | while (current != NULL) | |
1297 | { | |
1298 | next = current->next; | |
cede9502 | 1299 | free (current); |
25d8f0a2 TS |
1300 | current = next; |
1301 | } | |
1302 | max_enum = NULL; | |
1303 | enum_history = NULL; | |
1304 | } | |
1305 | ||
1306 | ||
6de9cd9a DN |
1307 | /* Function called by variable_decl() that adds an initialization |
1308 | expression to a symbol. */ | |
1309 | ||
524af0d6 | 1310 | static bool |
66e4ab31 | 1311 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1312 | { |
1313 | symbol_attribute attr; | |
1314 | gfc_symbol *sym; | |
1315 | gfc_expr *init; | |
1316 | ||
1317 | init = *initp; | |
08a6b8e0 | 1318 | if (find_special (name, &sym, false)) |
524af0d6 | 1319 | return false; |
6de9cd9a DN |
1320 | |
1321 | attr = sym->attr; | |
1322 | ||
1323 | /* If this symbol is confirming an implicit parameter type, | |
1324 | then an initialization expression is not allowed. */ | |
1325 | if (attr.flavor == FL_PARAMETER | |
1326 | && sym->value != NULL | |
1327 | && *initp != NULL) | |
1328 | { | |
1329 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1330 | sym->name); | |
524af0d6 | 1331 | return false; |
6de9cd9a DN |
1332 | } |
1333 | ||
1334 | if (init == NULL) | |
1335 | { | |
1336 | /* An initializer is required for PARAMETER declarations. */ | |
1337 | if (attr.flavor == FL_PARAMETER) | |
1338 | { | |
1339 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1340 | return false; |
6de9cd9a DN |
1341 | } |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1346 | initializer. */ |
6de9cd9a DN |
1347 | if (sym->attr.data) |
1348 | { | |
636dff67 SK |
1349 | gfc_error ("Variable '%s' at %C with an initializer already " |
1350 | "appears in a DATA statement", sym->name); | |
524af0d6 | 1351 | return false; |
6de9cd9a DN |
1352 | } |
1353 | ||
75d17889 | 1354 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1355 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1356 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1357 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1358 | && !sym->attr.proc_pointer |
524af0d6 JB |
1359 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1360 | return false; | |
6de9cd9a | 1361 | |
bc21d315 | 1362 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1363 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1364 | { |
1365 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1366 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1367 | return false; | |
51b128a0 | 1368 | |
bc21d315 | 1369 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1370 | { |
a99288e5 | 1371 | int clen; |
66e4ab31 SK |
1372 | /* If there are multiple CHARACTER variables declared on the |
1373 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1374 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1375 | |
a99288e5 PT |
1376 | if (sym->attr.flavor == FL_PARAMETER) |
1377 | { | |
1378 | if (init->expr_type == EXPR_CONSTANT) | |
1379 | { | |
1380 | clen = init->value.character.length; | |
b7e75771 JD |
1381 | sym->ts.u.cl->length |
1382 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1383 | NULL, clen); | |
a99288e5 PT |
1384 | } |
1385 | else if (init->expr_type == EXPR_ARRAY) | |
1386 | { | |
b7e75771 JD |
1387 | gfc_constructor *c; |
1388 | c = gfc_constructor_first (init->value.constructor); | |
1389 | clen = c->expr->value.character.length; | |
1390 | sym->ts.u.cl->length | |
1391 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1392 | NULL, clen); | |
a99288e5 | 1393 | } |
bc21d315 JW |
1394 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1395 | sym->ts.u.cl->length = | |
1396 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1397 | } |
df7cc9b5 FW |
1398 | } |
1399 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1400 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1401 | { |
bc21d315 | 1402 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
df7cc9b5 FW |
1403 | |
1404 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1405 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1406 | else if (init->expr_type == EXPR_ARRAY) |
1407 | { | |
b7e75771 JD |
1408 | gfc_constructor *c; |
1409 | ||
dcdc7b6c PT |
1410 | /* Build a new charlen to prevent simplification from |
1411 | deleting the length before it is resolved. */ | |
b76e28c6 | 1412 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1413 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1414 | |
b7e75771 JD |
1415 | for (c = gfc_constructor_first (init->value.constructor); |
1416 | c; c = gfc_constructor_next (c)) | |
1417 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1418 | } |
1419 | } | |
1420 | } | |
1421 | ||
f5ca06e6 DK |
1422 | /* If sym is implied-shape, set its upper bounds from init. */ |
1423 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1424 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1425 | { | |
1426 | int dim; | |
1427 | ||
1428 | if (init->rank == 0) | |
1429 | { | |
1430 | gfc_error ("Can't initialize implied-shape array at %L" | |
1431 | " with scalar", &sym->declared_at); | |
524af0d6 | 1432 | return false; |
f5ca06e6 DK |
1433 | } |
1434 | gcc_assert (sym->as->rank == init->rank); | |
1435 | ||
1436 | /* Shape should be present, we get an initialization expression. */ | |
1437 | gcc_assert (init->shape); | |
1438 | ||
1439 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1440 | { | |
1441 | int k; | |
1442 | gfc_expr* lower; | |
1443 | gfc_expr* e; | |
f5acf0f2 | 1444 | |
f5ca06e6 DK |
1445 | lower = sym->as->lower[dim]; |
1446 | if (lower->expr_type != EXPR_CONSTANT) | |
1447 | { | |
1448 | gfc_error ("Non-constant lower bound in implied-shape" | |
1449 | " declaration at %L", &lower->where); | |
524af0d6 | 1450 | return false; |
f5ca06e6 DK |
1451 | } |
1452 | ||
1453 | /* All dimensions must be without upper bound. */ | |
1454 | gcc_assert (!sym->as->upper[dim]); | |
1455 | ||
1456 | k = lower->ts.kind; | |
1457 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1458 | mpz_add (e->value.integer, | |
1459 | lower->value.integer, init->shape[dim]); | |
1460 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1461 | sym->as->upper[dim] = e; | |
1462 | } | |
1463 | ||
1464 | sym->as->type = AS_EXPLICIT; | |
1465 | } | |
1466 | ||
a8b3b0b6 CR |
1467 | /* Need to check if the expression we initialized this |
1468 | to was one of the iso_c_binding named constants. If so, | |
1469 | and we're a parameter (constant), let it be iso_c. | |
1470 | For example: | |
1471 | integer(c_int), parameter :: my_int = c_int | |
1472 | integer(my_int) :: my_int_2 | |
1473 | If we mark my_int as iso_c (since we can see it's value | |
1474 | is equal to one of the named constants), then my_int_2 | |
1475 | will be considered C interoperable. */ | |
1476 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1477 | { | |
1478 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1479 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1480 | /* attr bits needed for module files. */ | |
1481 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1482 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1483 | if (init->ts.is_iso_c) | |
1484 | sym->ts.f90_type = init->ts.f90_type; | |
1485 | } | |
b7e75771 | 1486 | |
6de9cd9a DN |
1487 | /* Add initializer. Make sure we keep the ranks sane. */ |
1488 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1489 | { |
1490 | mpz_t size; | |
1491 | gfc_expr *array; | |
a9b43781 PT |
1492 | int n; |
1493 | if (sym->attr.flavor == FL_PARAMETER | |
1494 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1495 | && spec_size (sym->as, &size) |
a9b43781 PT |
1496 | && mpz_cmp_si (size, 0) > 0) |
1497 | { | |
b7e75771 JD |
1498 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1499 | &init->where); | |
a9b43781 | 1500 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1501 | gfc_constructor_append_expr (&array->value.constructor, |
1502 | n == 0 | |
1503 | ? init | |
1504 | : gfc_copy_expr (init), | |
1505 | &init->where); | |
f5acf0f2 | 1506 | |
a9b43781 PT |
1507 | array->shape = gfc_get_shape (sym->as->rank); |
1508 | for (n = 0; n < sym->as->rank; n++) | |
1509 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1510 | ||
1511 | init = array; | |
1512 | mpz_clear (size); | |
1513 | } | |
1514 | init->rank = sym->as->rank; | |
1515 | } | |
6de9cd9a DN |
1516 | |
1517 | sym->value = init; | |
ef7236d2 DF |
1518 | if (sym->attr.save == SAVE_NONE) |
1519 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1520 | *initp = NULL; |
1521 | } | |
1522 | ||
524af0d6 | 1523 | return true; |
6de9cd9a DN |
1524 | } |
1525 | ||
1526 | ||
1527 | /* Function called by variable_decl() that adds a name to a structure | |
1528 | being built. */ | |
1529 | ||
524af0d6 | 1530 | static bool |
636dff67 SK |
1531 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1532 | gfc_array_spec **as) | |
6de9cd9a DN |
1533 | { |
1534 | gfc_component *c; | |
524af0d6 | 1535 | bool t = true; |
6de9cd9a | 1536 | |
619dd721 | 1537 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1538 | constructing, it must have the pointer attribute. */ |
619dd721 | 1539 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1540 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1541 | && current_attr.pointer == 0) |
1542 | { | |
1543 | gfc_error ("Component at %C must have the POINTER attribute"); | |
524af0d6 | 1544 | return false; |
6de9cd9a DN |
1545 | } |
1546 | ||
636dff67 | 1547 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1548 | { |
1549 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1550 | { | |
1551 | gfc_error ("Array component of structure at %C must have explicit " | |
1552 | "or deferred shape"); | |
524af0d6 | 1553 | return false; |
6de9cd9a DN |
1554 | } |
1555 | } | |
1556 | ||
524af0d6 JB |
1557 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1558 | return false; | |
6de9cd9a DN |
1559 | |
1560 | c->ts = current_ts; | |
bc21d315 JW |
1561 | if (c->ts.type == BT_CHARACTER) |
1562 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1563 | c->attr = current_attr; |
6de9cd9a DN |
1564 | |
1565 | c->initializer = *init; | |
1566 | *init = NULL; | |
1567 | ||
1568 | c->as = *as; | |
1569 | if (c->as != NULL) | |
be59db2d TB |
1570 | { |
1571 | if (c->as->corank) | |
1572 | c->attr.codimension = 1; | |
1573 | if (c->as->rank) | |
1574 | c->attr.dimension = 1; | |
1575 | } | |
6de9cd9a DN |
1576 | *as = NULL; |
1577 | ||
28d08315 PT |
1578 | /* Should this ever get more complicated, combine with similar section |
1579 | in add_init_expr_to_sym into a separate function. */ | |
f4347334 ZG |
1580 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1581 | && c->ts.u.cl | |
bc21d315 | 1582 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
28d08315 | 1583 | { |
d2848082 DK |
1584 | int len; |
1585 | ||
bc21d315 JW |
1586 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1587 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1588 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1589 | |
bc21d315 | 1590 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1591 | |
1592 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1593 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1594 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1595 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1596 | { |
b7e75771 JD |
1597 | gfc_constructor *ctor; |
1598 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1599 | |
2f4d1994 | 1600 | if (ctor) |
d2848082 | 1601 | { |
2f4d1994 | 1602 | int first_len; |
b7e75771 JD |
1603 | bool has_ts = (c->initializer->ts.u.cl |
1604 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1605 | |
1606 | /* Remember the length of the first element for checking | |
1607 | that all elements *in the constructor* have the same | |
1608 | length. This need not be the length of the LHS! */ | |
1609 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1610 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1611 | first_len = ctor->expr->value.character.length; | |
1612 | ||
b7e75771 JD |
1613 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1614 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1615 | { |
b7e75771 JD |
1616 | gfc_set_constant_character_len (len, ctor->expr, |
1617 | has_ts ? -1 : first_len); | |
1618 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1619 | } |
d2848082 | 1620 | } |
28d08315 PT |
1621 | } |
1622 | } | |
1623 | ||
6de9cd9a | 1624 | /* Check array components. */ |
d4b7d0f0 | 1625 | if (!c->attr.dimension) |
2e23972e | 1626 | goto scalar; |
6de9cd9a | 1627 | |
d4b7d0f0 | 1628 | if (c->attr.pointer) |
6de9cd9a DN |
1629 | { |
1630 | if (c->as->type != AS_DEFERRED) | |
1631 | { | |
5046aff5 PT |
1632 | gfc_error ("Pointer array component of structure at %C must have a " |
1633 | "deferred shape"); | |
524af0d6 | 1634 | t = false; |
5046aff5 PT |
1635 | } |
1636 | } | |
d4b7d0f0 | 1637 | else if (c->attr.allocatable) |
5046aff5 PT |
1638 | { |
1639 | if (c->as->type != AS_DEFERRED) | |
1640 | { | |
1641 | gfc_error ("Allocatable component of structure at %C must have a " | |
1642 | "deferred shape"); | |
524af0d6 | 1643 | t = false; |
6de9cd9a DN |
1644 | } |
1645 | } | |
1646 | else | |
1647 | { | |
1648 | if (c->as->type != AS_EXPLICIT) | |
1649 | { | |
636dff67 SK |
1650 | gfc_error ("Array component of structure at %C must have an " |
1651 | "explicit shape"); | |
524af0d6 | 1652 | t = false; |
6de9cd9a DN |
1653 | } |
1654 | } | |
1655 | ||
2e23972e JW |
1656 | scalar: |
1657 | if (c->ts.type == BT_CLASS) | |
17643884 JW |
1658 | { |
1659 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1660 | || (!c->ts.u.derived->components | |
1661 | && !c->ts.u.derived->attr.zero_comp); | |
524af0d6 | 1662 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
ea59b186 | 1663 | |
524af0d6 | 1664 | if (t) |
ea59b186 | 1665 | t = t2; |
17643884 JW |
1666 | } |
1667 | ||
2e23972e | 1668 | return t; |
6de9cd9a DN |
1669 | } |
1670 | ||
1671 | ||
1672 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1673 | ||
1674 | match | |
636dff67 | 1675 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1676 | { |
1677 | gfc_symbol *sym; | |
576f6da6 | 1678 | match m, m2 = MATCH_NO; |
6de9cd9a | 1679 | |
576f6da6 TB |
1680 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1681 | return MATCH_ERROR; | |
1682 | ||
1683 | if (m == MATCH_NO) | |
1684 | { | |
1685 | locus old_loc; | |
1686 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1687 | ||
94241120 | 1688 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
1689 | return m2; |
1690 | ||
1691 | old_loc = gfc_current_locus; | |
1692 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1693 | return MATCH_ERROR; | |
1694 | if (m2 != MATCH_YES | |
1695 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1696 | return MATCH_ERROR; | |
1697 | if (m2 == MATCH_NO) | |
1698 | { | |
1699 | gfc_current_locus = old_loc; | |
1700 | return MATCH_NO; | |
1701 | } | |
1702 | } | |
6de9cd9a DN |
1703 | |
1704 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1705 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1706 | { | |
1707 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1708 | return MATCH_ERROR; | |
1709 | } | |
1710 | ||
1711 | gfc_intrinsic_symbol (sym); | |
1712 | ||
1713 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 1714 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
1715 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1716 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
1717 | return MATCH_ERROR; |
1718 | ||
b7e75771 | 1719 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 1720 | |
576f6da6 TB |
1721 | /* Invalid per F2008, C512. */ |
1722 | if (m2 == MATCH_YES) | |
1723 | { | |
1724 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1725 | return MATCH_ERROR; | |
1726 | } | |
1727 | ||
6de9cd9a DN |
1728 | return MATCH_YES; |
1729 | } | |
1730 | ||
1731 | ||
80f95228 JW |
1732 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1733 | ||
1734 | static match | |
1735 | match_pointer_init (gfc_expr **init, int procptr) | |
1736 | { | |
1737 | match m; | |
1738 | ||
1739 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1740 | { | |
1741 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1742 | "a PURE procedure"); | |
1743 | return MATCH_ERROR; | |
1744 | } | |
1745 | ||
eea58adb | 1746 | /* Match NULL() initialization. */ |
80f95228 JW |
1747 | m = gfc_match_null (init); |
1748 | if (m != MATCH_NO) | |
1749 | return m; | |
1750 | ||
1751 | /* Match non-NULL initialization. */ | |
837c4b78 | 1752 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1753 | gfc_matching_procptr_assignment = procptr; |
1754 | m = gfc_match_rvalue (init); | |
837c4b78 | 1755 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1756 | gfc_matching_procptr_assignment = 0; |
1757 | if (m == MATCH_ERROR) | |
1758 | return MATCH_ERROR; | |
1759 | else if (m == MATCH_NO) | |
1760 | { | |
1761 | gfc_error ("Error in pointer initialization at %C"); | |
1762 | return MATCH_ERROR; | |
1763 | } | |
1764 | ||
1765 | if (!procptr) | |
1766 | gfc_resolve_expr (*init); | |
f5acf0f2 | 1767 | |
524af0d6 JB |
1768 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1769 | "initialization at %C")) | |
80f95228 JW |
1770 | return MATCH_ERROR; |
1771 | ||
1772 | return MATCH_YES; | |
1773 | } | |
1774 | ||
1775 | ||
524af0d6 | 1776 | static bool |
bb9de0c4 JW |
1777 | check_function_name (char *name) |
1778 | { | |
1779 | /* In functions that have a RESULT variable defined, the function name always | |
1780 | refers to function calls. Therefore, the name is not allowed to appear in | |
1781 | specification statements. When checking this, be careful about | |
1782 | 'hidden' procedure pointer results ('ppr@'). */ | |
1783 | ||
1784 | if (gfc_current_state () == COMP_FUNCTION) | |
1785 | { | |
1786 | gfc_symbol *block = gfc_current_block (); | |
1787 | if (block && block->result && block->result != block | |
1788 | && strcmp (block->result->name, "ppr@") != 0 | |
1789 | && strcmp (block->name, name) == 0) | |
1790 | { | |
1791 | gfc_error ("Function name '%s' not allowed at %C", name); | |
524af0d6 | 1792 | return false; |
bb9de0c4 JW |
1793 | } |
1794 | } | |
1795 | ||
524af0d6 | 1796 | return true; |
bb9de0c4 JW |
1797 | } |
1798 | ||
1799 | ||
6de9cd9a DN |
1800 | /* Match a variable name with an optional initializer. When this |
1801 | subroutine is called, a variable is expected to be parsed next. | |
1802 | Depending on what is happening at the moment, updates either the | |
1803 | symbol table or the current interface. */ | |
1804 | ||
1805 | static match | |
949d5b72 | 1806 | variable_decl (int elem) |
6de9cd9a DN |
1807 | { |
1808 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1809 | gfc_expr *initializer, *char_len; | |
1810 | gfc_array_spec *as; | |
83d890b9 | 1811 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1812 | gfc_charlen *cl; |
e69afb29 | 1813 | bool cl_deferred; |
6de9cd9a DN |
1814 | locus var_locus; |
1815 | match m; | |
524af0d6 | 1816 | bool t; |
83d890b9 | 1817 | gfc_symbol *sym; |
6de9cd9a DN |
1818 | |
1819 | initializer = NULL; | |
1820 | as = NULL; | |
83d890b9 | 1821 | cp_as = NULL; |
6de9cd9a DN |
1822 | |
1823 | /* When we get here, we've just matched a list of attributes and | |
1824 | maybe a type and a double colon. The next thing we expect to see | |
1825 | is the name of the symbol. */ | |
1826 | m = gfc_match_name (name); | |
1827 | if (m != MATCH_YES) | |
1828 | goto cleanup; | |
1829 | ||
63645982 | 1830 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1831 | |
1832 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1833 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1834 | if (m == MATCH_ERROR) |
6de9cd9a | 1835 | goto cleanup; |
25d8f0a2 | 1836 | |
6de9cd9a DN |
1837 | if (m == MATCH_NO) |
1838 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 1839 | else if (current_as |
524af0d6 | 1840 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
1841 | { |
1842 | m = MATCH_ERROR; | |
1843 | goto cleanup; | |
1844 | } | |
6de9cd9a | 1845 | |
11126dc0 AL |
1846 | if (gfc_option.flag_cray_pointer) |
1847 | cp_as = gfc_copy_array_spec (as); | |
1848 | ||
f5ca06e6 DK |
1849 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1850 | determine (and check) whether it can be implied-shape. If it | |
1851 | was parsed as assumed-size, change it because PARAMETERs can not | |
1852 | be assumed-size. */ | |
1853 | if (as) | |
1854 | { | |
1855 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1856 | { | |
1857 | m = MATCH_ERROR; | |
1858 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1859 | name, &var_locus); | |
1860 | goto cleanup; | |
1861 | } | |
1862 | ||
1863 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1864 | && current_attr.flavor == FL_PARAMETER) | |
1865 | as->type = AS_IMPLIED_SHAPE; | |
1866 | ||
1867 | if (as->type == AS_IMPLIED_SHAPE | |
524af0d6 JB |
1868 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1869 | &var_locus)) | |
f5ca06e6 DK |
1870 | { |
1871 | m = MATCH_ERROR; | |
1872 | goto cleanup; | |
1873 | } | |
1874 | } | |
1875 | ||
6de9cd9a DN |
1876 | char_len = NULL; |
1877 | cl = NULL; | |
e69afb29 | 1878 | cl_deferred = false; |
6de9cd9a DN |
1879 | |
1880 | if (current_ts.type == BT_CHARACTER) | |
1881 | { | |
2767f2cc | 1882 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
1883 | { |
1884 | case MATCH_YES: | |
b76e28c6 | 1885 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1886 | |
1887 | cl->length = char_len; | |
1888 | break; | |
1889 | ||
949d5b72 | 1890 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1891 | element. Also copy assumed lengths. */ |
6de9cd9a | 1892 | case MATCH_NO: |
9b21a380 | 1893 | if (elem > 1 |
bc21d315 JW |
1894 | && (current_ts.u.cl->length == NULL |
1895 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1896 | { |
b76e28c6 | 1897 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1898 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1899 | } |
1900 | else | |
bc21d315 | 1901 | cl = current_ts.u.cl; |
949d5b72 | 1902 | |
e69afb29 SK |
1903 | cl_deferred = current_ts.deferred; |
1904 | ||
6de9cd9a DN |
1905 | break; |
1906 | ||
1907 | case MATCH_ERROR: | |
1908 | goto cleanup; | |
1909 | } | |
1910 | } | |
1911 | ||
83d890b9 | 1912 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1913 | then we want to set the type & bail out. */ |
83d890b9 AL |
1914 | if (gfc_option.flag_cray_pointer) |
1915 | { | |
1916 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1917 | if (sym != NULL && sym->attr.cray_pointee) | |
1918 | { | |
1919 | sym->ts.type = current_ts.type; | |
1920 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
1921 | sym->ts.u.cl = cl; |
1922 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
1923 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1924 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 1925 | m = MATCH_YES; |
f5acf0f2 | 1926 | |
83d890b9 AL |
1927 | /* Check to see if we have an array specification. */ |
1928 | if (cp_as != NULL) | |
1929 | { | |
1930 | if (sym->as != NULL) | |
1931 | { | |
e25a0da3 | 1932 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1933 | gfc_free_array_spec (cp_as); |
1934 | m = MATCH_ERROR; | |
1935 | goto cleanup; | |
1936 | } | |
1937 | else | |
1938 | { | |
524af0d6 | 1939 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 1940 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 1941 | |
83d890b9 | 1942 | /* Fix the array spec. */ |
d51347f9 | 1943 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1944 | if (m == MATCH_ERROR) |
1945 | goto cleanup; | |
1946 | } | |
d51347f9 | 1947 | } |
83d890b9 AL |
1948 | goto cleanup; |
1949 | } | |
1950 | else | |
1951 | { | |
1952 | gfc_free_array_spec (cp_as); | |
1953 | } | |
1954 | } | |
d51347f9 | 1955 | |
3070bab4 JW |
1956 | /* Procedure pointer as function result. */ |
1957 | if (gfc_current_state () == COMP_FUNCTION | |
1958 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1959 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1960 | strcpy (name, "ppr@"); | |
1961 | ||
1962 | if (gfc_current_state () == COMP_FUNCTION | |
1963 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1964 | && gfc_current_block ()->result | |
1965 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1966 | strcpy (name, "ppr@"); | |
d51347f9 | 1967 | |
6de9cd9a DN |
1968 | /* OK, we've successfully matched the declaration. Now put the |
1969 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1970 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1971 | perfectly legal: |
1972 | ||
1973 | integer, parameter :: i = huge(i) | |
1974 | ||
1975 | This is only true for parameters or variables of a basic type. | |
1976 | For components of derived types, it is not true, so we don't | |
1977 | create a symbol for those yet. If we fail to create the symbol, | |
1978 | bail out. */ | |
1979 | if (gfc_current_state () != COMP_DERIVED | |
524af0d6 | 1980 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 1981 | { |
72af9f0b PT |
1982 | m = MATCH_ERROR; |
1983 | goto cleanup; | |
1984 | } | |
1985 | ||
524af0d6 | 1986 | if (!check_function_name (name)) |
6de9cd9a | 1987 | { |
6de9cd9a DN |
1988 | m = MATCH_ERROR; |
1989 | goto cleanup; | |
1990 | } | |
1991 | ||
294fbfc8 TS |
1992 | /* We allow old-style initializations of the form |
1993 | integer i /2/, j(4) /3*3, 1/ | |
1994 | (if no colon has been seen). These are different from data | |
1995 | statements in that initializers are only allowed to apply to the | |
1996 | variable immediately preceding, i.e. | |
1997 | integer i, j /1, 2/ | |
1998 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1999 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2000 | |
2001 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2002 | { | |
524af0d6 JB |
2003 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2004 | "initialization at %C")) | |
294fbfc8 | 2005 | return MATCH_ERROR; |
f5acf0f2 | 2006 | |
294fbfc8 TS |
2007 | return match_old_style_init (name); |
2008 | } | |
2009 | ||
6de9cd9a DN |
2010 | /* The double colon must be present in order to have initializers. |
2011 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2012 | if (colon_seen) | |
2013 | { | |
2014 | if (gfc_match (" =>") == MATCH_YES) | |
2015 | { | |
6de9cd9a DN |
2016 | if (!current_attr.pointer) |
2017 | { | |
2018 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2019 | m = MATCH_ERROR; | |
2020 | goto cleanup; | |
2021 | } | |
2022 | ||
80f95228 | 2023 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2024 | if (m != MATCH_YES) |
2025 | goto cleanup; | |
6de9cd9a DN |
2026 | } |
2027 | else if (gfc_match_char ('=') == MATCH_YES) | |
2028 | { | |
2029 | if (current_attr.pointer) | |
2030 | { | |
636dff67 SK |
2031 | gfc_error ("Pointer initialization at %C requires '=>', " |
2032 | "not '='"); | |
6de9cd9a DN |
2033 | m = MATCH_ERROR; |
2034 | goto cleanup; | |
2035 | } | |
2036 | ||
2037 | m = gfc_match_init_expr (&initializer); | |
2038 | if (m == MATCH_NO) | |
2039 | { | |
2040 | gfc_error ("Expected an initialization expression at %C"); | |
2041 | m = MATCH_ERROR; | |
2042 | } | |
2043 | ||
ade20620 TB |
2044 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2045 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2046 | { |
636dff67 SK |
2047 | gfc_error ("Initialization of variable at %C is not allowed in " |
2048 | "a PURE procedure"); | |
6de9cd9a DN |
2049 | m = MATCH_ERROR; |
2050 | } | |
2051 | ||
2052 | if (m != MATCH_YES) | |
2053 | goto cleanup; | |
2054 | } | |
cb44ab82 VL |
2055 | } |
2056 | ||
5046aff5 PT |
2057 | if (initializer != NULL && current_attr.allocatable |
2058 | && gfc_current_state () == COMP_DERIVED) | |
2059 | { | |
636dff67 SK |
2060 | gfc_error ("Initialization of allocatable component at %C is not " |
2061 | "allowed"); | |
5046aff5 PT |
2062 | m = MATCH_ERROR; |
2063 | goto cleanup; | |
2064 | } | |
2065 | ||
54b4ba60 | 2066 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2067 | NULL here, because we sometimes also need to check if a |
2068 | declaration *must* have an initialization expression. */ | |
2069 | if (gfc_current_state () != COMP_DERIVED) | |
2070 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2071 | else | |
54b4ba60 | 2072 | { |
5046aff5 | 2073 | if (current_ts.type == BT_DERIVED |
636dff67 | 2074 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2075 | initializer = gfc_default_initializer (¤t_ts); |
2076 | t = build_struct (name, cl, &initializer, &as); | |
2077 | } | |
6de9cd9a | 2078 | |
524af0d6 | 2079 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2080 | |
2081 | cleanup: | |
2082 | /* Free stuff up and return. */ | |
2083 | gfc_free_expr (initializer); | |
2084 | gfc_free_array_spec (as); | |
2085 | ||
2086 | return m; | |
2087 | } | |
2088 | ||
2089 | ||
b2b81a3f BM |
2090 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2091 | This assumes that the byte size is equal to the kind number for | |
2092 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2093 | |
2094 | match | |
636dff67 | 2095 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2096 | { |
2097 | match m; | |
5cf54585 | 2098 | int original_kind; |
6de9cd9a DN |
2099 | |
2100 | if (gfc_match_char ('*') != MATCH_YES) | |
2101 | return MATCH_NO; | |
2102 | ||
5cf54585 | 2103 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2104 | if (m != MATCH_YES) |
2105 | return MATCH_ERROR; | |
2106 | ||
e45b3c75 ES |
2107 | original_kind = ts->kind; |
2108 | ||
6de9cd9a | 2109 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2110 | if (ts->type == BT_COMPLEX) |
2111 | { | |
2112 | if (ts->kind % 2) | |
636dff67 SK |
2113 | { |
2114 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2115 | gfc_basic_typename (ts->type), original_kind); | |
2116 | return MATCH_ERROR; | |
2117 | } | |
e45b3c75 | 2118 | ts->kind /= 2; |
f4347334 ZG |
2119 | |
2120 | } | |
2121 | ||
2122 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2123 | ts->kind = 8; | |
2124 | ||
2125 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2126 | { | |
2127 | if (ts->kind == 4) | |
2128 | { | |
2129 | if (gfc_option.flag_real4_kind == 8) | |
2130 | ts->kind = 8; | |
2131 | if (gfc_option.flag_real4_kind == 10) | |
2132 | ts->kind = 10; | |
2133 | if (gfc_option.flag_real4_kind == 16) | |
2134 | ts->kind = 16; | |
2135 | } | |
2136 | ||
2137 | if (ts->kind == 8) | |
2138 | { | |
2139 | if (gfc_option.flag_real8_kind == 4) | |
2140 | ts->kind = 4; | |
2141 | if (gfc_option.flag_real8_kind == 10) | |
2142 | ts->kind = 10; | |
2143 | if (gfc_option.flag_real8_kind == 16) | |
2144 | ts->kind = 16; | |
2145 | } | |
e45b3c75 | 2146 | } |
6de9cd9a | 2147 | |
e7a2d5fb | 2148 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2149 | { |
e45b3c75 | 2150 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2151 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2152 | return MATCH_ERROR; |
2153 | } | |
2154 | ||
524af0d6 JB |
2155 | if (!gfc_notify_std (GFC_STD_GNU, |
2156 | "Nonstandard type declaration %s*%d at %C", | |
2157 | gfc_basic_typename(ts->type), original_kind)) | |
df8652dc SK |
2158 | return MATCH_ERROR; |
2159 | ||
6de9cd9a DN |
2160 | return MATCH_YES; |
2161 | } | |
2162 | ||
2163 | ||
2164 | /* Match a kind specification. Since kinds are generally optional, we | |
2165 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2166 | string is found, then we know we have an error. */ | |
2167 | ||
2168 | match | |
e2d29968 | 2169 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2170 | { |
e2d29968 | 2171 | locus where, loc; |
6de9cd9a DN |
2172 | gfc_expr *e; |
2173 | match m, n; | |
96ee3a4a | 2174 | char c; |
6de9cd9a DN |
2175 | const char *msg; |
2176 | ||
2177 | m = MATCH_NO; | |
e2d29968 | 2178 | n = MATCH_YES; |
6de9cd9a DN |
2179 | e = NULL; |
2180 | ||
e2d29968 PT |
2181 | where = loc = gfc_current_locus; |
2182 | ||
2183 | if (kind_expr_only) | |
2184 | goto kind_expr; | |
6de9cd9a DN |
2185 | |
2186 | if (gfc_match_char ('(') == MATCH_NO) | |
2187 | return MATCH_NO; | |
2188 | ||
2189 | /* Also gobbles optional text. */ | |
2190 | if (gfc_match (" kind = ") == MATCH_YES) | |
2191 | m = MATCH_ERROR; | |
2192 | ||
e2d29968 PT |
2193 | loc = gfc_current_locus; |
2194 | ||
2195 | kind_expr: | |
6de9cd9a | 2196 | n = gfc_match_init_expr (&e); |
e2d29968 | 2197 | |
6de9cd9a | 2198 | if (n != MATCH_YES) |
e2d29968 | 2199 | { |
1c8bcdf7 | 2200 | if (gfc_matching_function) |
e2d29968 | 2201 | { |
f5acf0f2 | 2202 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2203 | imported parameters and try again after the specification |
2204 | expressions..... */ | |
e2d29968 PT |
2205 | if (gfc_match_char (')') != MATCH_YES) |
2206 | { | |
2207 | gfc_error ("Missing right parenthesis at %C"); | |
2208 | m = MATCH_ERROR; | |
2209 | goto no_match; | |
2210 | } | |
2211 | ||
2212 | gfc_free_expr (e); | |
e2d29968 PT |
2213 | gfc_undo_symbols (); |
2214 | return MATCH_YES; | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | /* ....or else, the match is real. */ | |
2219 | if (n == MATCH_NO) | |
2220 | gfc_error ("Expected initialization expression at %C"); | |
2221 | if (n != MATCH_YES) | |
2222 | return MATCH_ERROR; | |
2223 | } | |
2224 | } | |
6de9cd9a DN |
2225 | |
2226 | if (e->rank != 0) | |
2227 | { | |
2228 | gfc_error ("Expected scalar initialization expression at %C"); | |
2229 | m = MATCH_ERROR; | |
2230 | goto no_match; | |
2231 | } | |
2232 | ||
2233 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2234 | |
6de9cd9a DN |
2235 | if (msg != NULL) |
2236 | { | |
2237 | gfc_error (msg); | |
2238 | m = MATCH_ERROR; | |
2239 | goto no_match; | |
2240 | } | |
2241 | ||
a8b3b0b6 CR |
2242 | /* Before throwing away the expression, let's see if we had a |
2243 | C interoperable kind (and store the fact). */ | |
2244 | if (e->ts.is_c_interop == 1) | |
2245 | { | |
eea58adb | 2246 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2247 | of the named constants from iso_c_binding. */ |
2248 | ts->is_c_interop = e->ts.is_iso_c; | |
2249 | ts->f90_type = e->ts.f90_type; | |
2250 | } | |
f5acf0f2 | 2251 | |
6de9cd9a DN |
2252 | gfc_free_expr (e); |
2253 | e = NULL; | |
2254 | ||
a8b3b0b6 CR |
2255 | /* Ignore errors to this point, if we've gotten here. This means |
2256 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2257 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2258 | { |
2259 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2260 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2261 | gfc_current_locus = where; |
2262 | return MATCH_ERROR; | |
6de9cd9a | 2263 | } |
96ee3a4a | 2264 | |
2ec855f1 TB |
2265 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2266 | if, e.g., c_double is used for COMPLEX as the standard | |
2267 | explicitly says that the kind type parameter for complex and real | |
2268 | variable is the same, i.e. c_float == c_float_complex. */ | |
2269 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2270 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2271 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
2be51762 TB |
2272 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2273 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2274 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2275 | |
96ee3a4a | 2276 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2277 | if ((c = gfc_next_ascii_char ()) != ')' |
2278 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2279 | { |
96ee3a4a TB |
2280 | if (ts->type == BT_CHARACTER) |
2281 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2282 | else | |
2283 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2284 | m = MATCH_ERROR; |
6de9cd9a | 2285 | } |
a8b3b0b6 CR |
2286 | else |
2287 | /* All tests passed. */ | |
2288 | m = MATCH_YES; | |
6de9cd9a | 2289 | |
a8b3b0b6 CR |
2290 | if(m == MATCH_ERROR) |
2291 | gfc_current_locus = where; | |
f4347334 ZG |
2292 | |
2293 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2294 | ts->kind = 8; | |
2295 | ||
2296 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2297 | { | |
2298 | if (ts->kind == 4) | |
2299 | { | |
2300 | if (gfc_option.flag_real4_kind == 8) | |
2301 | ts->kind = 8; | |
2302 | if (gfc_option.flag_real4_kind == 10) | |
2303 | ts->kind = 10; | |
2304 | if (gfc_option.flag_real4_kind == 16) | |
2305 | ts->kind = 16; | |
2306 | } | |
2307 | ||
2308 | if (ts->kind == 8) | |
2309 | { | |
2310 | if (gfc_option.flag_real8_kind == 4) | |
2311 | ts->kind = 4; | |
2312 | if (gfc_option.flag_real8_kind == 10) | |
2313 | ts->kind = 10; | |
2314 | if (gfc_option.flag_real8_kind == 16) | |
2315 | ts->kind = 16; | |
2316 | } | |
2317 | } | |
2318 | ||
a8b3b0b6 CR |
2319 | /* Return what we know from the test(s). */ |
2320 | return m; | |
6de9cd9a DN |
2321 | |
2322 | no_match: | |
2323 | gfc_free_expr (e); | |
63645982 | 2324 | gfc_current_locus = where; |
6de9cd9a DN |
2325 | return m; |
2326 | } | |
2327 | ||
2328 | ||
187de1ed FXC |
2329 | static match |
2330 | match_char_kind (int * kind, int * is_iso_c) | |
2331 | { | |
2332 | locus where; | |
2333 | gfc_expr *e; | |
2334 | match m, n; | |
2335 | const char *msg; | |
2336 | ||
2337 | m = MATCH_NO; | |
2338 | e = NULL; | |
2339 | where = gfc_current_locus; | |
2340 | ||
2341 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2342 | |
1c8bcdf7 | 2343 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2344 | { |
1c8bcdf7 | 2345 | /* The expression might include use-associated or imported |
f5acf0f2 | 2346 | parameters and try again after the specification |
1c8bcdf7 | 2347 | expressions. */ |
96ee3a4a | 2348 | gfc_free_expr (e); |
96ee3a4a TB |
2349 | gfc_undo_symbols (); |
2350 | return MATCH_YES; | |
2351 | } | |
2352 | ||
187de1ed FXC |
2353 | if (n == MATCH_NO) |
2354 | gfc_error ("Expected initialization expression at %C"); | |
2355 | if (n != MATCH_YES) | |
2356 | return MATCH_ERROR; | |
2357 | ||
2358 | if (e->rank != 0) | |
2359 | { | |
2360 | gfc_error ("Expected scalar initialization expression at %C"); | |
2361 | m = MATCH_ERROR; | |
2362 | goto no_match; | |
2363 | } | |
2364 | ||
2365 | msg = gfc_extract_int (e, kind); | |
2366 | *is_iso_c = e->ts.is_iso_c; | |
2367 | if (msg != NULL) | |
2368 | { | |
2369 | gfc_error (msg); | |
2370 | m = MATCH_ERROR; | |
2371 | goto no_match; | |
2372 | } | |
2373 | ||
2374 | gfc_free_expr (e); | |
2375 | ||
2376 | /* Ignore errors to this point, if we've gotten here. This means | |
2377 | we ignore the m=MATCH_ERROR from above. */ | |
2378 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2379 | { | |
2380 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2381 | m = MATCH_ERROR; | |
2382 | } | |
2383 | else | |
2384 | /* All tests passed. */ | |
2385 | m = MATCH_YES; | |
2386 | ||
2387 | if (m == MATCH_ERROR) | |
2388 | gfc_current_locus = where; | |
f5acf0f2 | 2389 | |
187de1ed FXC |
2390 | /* Return what we know from the test(s). */ |
2391 | return m; | |
2392 | ||
2393 | no_match: | |
2394 | gfc_free_expr (e); | |
2395 | gfc_current_locus = where; | |
2396 | return m; | |
2397 | } | |
2398 | ||
8234e5e0 | 2399 | |
6de9cd9a DN |
2400 | /* Match the various kind/length specifications in a CHARACTER |
2401 | declaration. We don't return MATCH_NO. */ | |
2402 | ||
8234e5e0 SK |
2403 | match |
2404 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2405 | { |
187de1ed | 2406 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2407 | gfc_charlen *cl; |
2408 | gfc_expr *len; | |
2409 | match m; | |
e69afb29 | 2410 | bool deferred; |
187de1ed | 2411 | |
6de9cd9a DN |
2412 | len = NULL; |
2413 | seen_length = 0; | |
187de1ed FXC |
2414 | kind = 0; |
2415 | is_iso_c = 0; | |
e69afb29 | 2416 | deferred = false; |
6de9cd9a DN |
2417 | |
2418 | /* Try the old-style specification first. */ | |
2419 | old_char_selector = 0; | |
2420 | ||
2767f2cc | 2421 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2422 | if (m != MATCH_NO) |
2423 | { | |
2424 | if (m == MATCH_YES) | |
2425 | old_char_selector = 1; | |
2426 | seen_length = 1; | |
2427 | goto done; | |
2428 | } | |
2429 | ||
2430 | m = gfc_match_char ('('); | |
2431 | if (m != MATCH_YES) | |
2432 | { | |
a8b3b0b6 | 2433 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2434 | goto done; |
2435 | } | |
2436 | ||
a8b3b0b6 | 2437 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2438 | if (gfc_match (" kind =") == MATCH_YES) |
2439 | { | |
187de1ed | 2440 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2441 | |
6de9cd9a DN |
2442 | if (m == MATCH_ERROR) |
2443 | goto done; | |
2444 | if (m == MATCH_NO) | |
2445 | goto syntax; | |
2446 | ||
2447 | if (gfc_match (" , len =") == MATCH_NO) | |
2448 | goto rparen; | |
2449 | ||
e69afb29 | 2450 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2451 | if (m == MATCH_NO) |
2452 | goto syntax; | |
2453 | if (m == MATCH_ERROR) | |
2454 | goto done; | |
2455 | seen_length = 1; | |
2456 | ||
2457 | goto rparen; | |
2458 | } | |
2459 | ||
66e4ab31 | 2460 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2461 | if (gfc_match (" len =") == MATCH_YES) |
2462 | { | |
e69afb29 | 2463 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2464 | if (m == MATCH_NO) |
2465 | goto syntax; | |
2466 | if (m == MATCH_ERROR) | |
2467 | goto done; | |
2468 | seen_length = 1; | |
2469 | ||
2470 | if (gfc_match_char (')') == MATCH_YES) | |
2471 | goto done; | |
2472 | ||
2473 | if (gfc_match (" , kind =") != MATCH_YES) | |
2474 | goto syntax; | |
2475 | ||
187de1ed FXC |
2476 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2477 | goto done; | |
6de9cd9a DN |
2478 | |
2479 | goto rparen; | |
2480 | } | |
2481 | ||
66e4ab31 | 2482 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2483 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2484 | if (m == MATCH_NO) |
2485 | goto syntax; | |
2486 | if (m == MATCH_ERROR) | |
2487 | goto done; | |
2488 | seen_length = 1; | |
2489 | ||
2490 | m = gfc_match_char (')'); | |
2491 | if (m == MATCH_YES) | |
2492 | goto done; | |
2493 | ||
2494 | if (gfc_match_char (',') != MATCH_YES) | |
2495 | goto syntax; | |
2496 | ||
a8b3b0b6 | 2497 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2498 | |
187de1ed | 2499 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2500 | if (m == MATCH_ERROR) |
2501 | goto done; | |
2502 | if (m == MATCH_NO) | |
2503 | goto syntax; | |
2504 | ||
2505 | rparen: | |
2506 | /* Require a right-paren at this point. */ | |
2507 | m = gfc_match_char (')'); | |
2508 | if (m == MATCH_YES) | |
2509 | goto done; | |
2510 | ||
2511 | syntax: | |
2512 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2513 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2514 | gfc_free_expr (len); |
2515 | return m; | |
6de9cd9a DN |
2516 | |
2517 | done: | |
a99d95a2 PT |
2518 | /* Deal with character functions after USE and IMPORT statements. */ |
2519 | if (gfc_matching_function) | |
1c8bcdf7 | 2520 | { |
a99d95a2 | 2521 | gfc_free_expr (len); |
1c8bcdf7 PT |
2522 | gfc_undo_symbols (); |
2523 | return MATCH_YES; | |
2524 | } | |
2525 | ||
6de9cd9a DN |
2526 | if (m != MATCH_YES) |
2527 | { | |
2528 | gfc_free_expr (len); | |
2529 | return m; | |
2530 | } | |
2531 | ||
2532 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2533 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2534 | |
2535 | if (seen_length == 0) | |
b7e75771 | 2536 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2537 | else |
5cd09fac | 2538 | cl->length = len; |
6de9cd9a | 2539 | |
bc21d315 | 2540 | ts->u.cl = cl; |
187de1ed | 2541 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2542 | ts->deferred = deferred; |
6de9cd9a | 2543 | |
eea58adb | 2544 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2545 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2546 | if (kind != 0) |
eea58adb | 2547 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2548 | of the named constants from iso_c_binding. */ |
2549 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2550 | else if (len != NULL) |
187de1ed FXC |
2551 | /* Here, we might have parsed something such as: character(c_char) |
2552 | In this case, the parsing code above grabs the c_char when | |
2553 | looking for the length (line 1690, roughly). it's the last | |
2554 | testcase for parsing the kind params of a character variable. | |
2555 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2556 | could be an error. |
187de1ed FXC |
2557 | To see if the user used a C interop kind, test the expr |
2558 | of the so called length, and see if it's C interoperable. */ | |
2559 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2560 | |
6de9cd9a DN |
2561 | return MATCH_YES; |
2562 | } | |
2563 | ||
2564 | ||
e74f1cc8 JW |
2565 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2566 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2567 | IMPLICIT statements. |
2568 | ||
d51347f9 | 2569 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2570 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2571 | statement correctly. */ |
2572 | ||
e2d29968 | 2573 | match |
e74f1cc8 | 2574 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2575 | { |
2576 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2577 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2578 | match m; |
8fc541d3 | 2579 | char c; |
0fb56814 | 2580 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2581 | const char *dt_name; |
6de9cd9a | 2582 | |
1c8bcdf7 PT |
2583 | /* A belt and braces check that the typespec is correctly being treated |
2584 | as a deferred characteristic association. */ | |
2585 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2586 | && (gfc_current_block ()->result->ts.kind == -1) |
2587 | && (ts->kind == -1); | |
6de9cd9a | 2588 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2589 | if (seen_deferred_kind) |
2590 | ts->kind = -1; | |
6de9cd9a | 2591 | |
a8b3b0b6 | 2592 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2593 | curr_binding_label = NULL; |
a8b3b0b6 | 2594 | |
5f700e6d AL |
2595 | if (gfc_match (" byte") == MATCH_YES) |
2596 | { | |
524af0d6 | 2597 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2598 | return MATCH_ERROR; |
2599 | ||
2600 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2601 | { | |
2602 | gfc_error ("BYTE type used at %C " | |
2603 | "is not available on the target machine"); | |
2604 | return MATCH_ERROR; | |
2605 | } | |
d51347f9 | 2606 | |
5f700e6d AL |
2607 | ts->type = BT_INTEGER; |
2608 | ts->kind = 1; | |
2609 | return MATCH_YES; | |
2610 | } | |
2611 | ||
0fb56814 | 2612 | |
45a69325 | 2613 | m = gfc_match (" type ("); |
0fb56814 | 2614 | matched_type = (m == MATCH_YES); |
45a69325 TB |
2615 | if (matched_type) |
2616 | { | |
2617 | gfc_gobble_whitespace (); | |
2618 | if (gfc_peek_ascii_char () == '*') | |
2619 | { | |
2620 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2621 | return m; | |
2622 | if (gfc_current_state () == COMP_DERIVED) | |
2623 | { | |
2624 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2625 | return MATCH_ERROR; | |
2626 | } | |
524af0d6 JB |
2627 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2628 | "at %C")) | |
45a69325 TB |
2629 | return MATCH_ERROR; |
2630 | ts->type = BT_ASSUMED; | |
2631 | return MATCH_YES; | |
2632 | } | |
2633 | ||
2634 | m = gfc_match ("%n", name); | |
2635 | matched_type = (m == MATCH_YES); | |
2636 | } | |
2637 | ||
0fb56814 TB |
2638 | if ((matched_type && strcmp ("integer", name) == 0) |
2639 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2640 | { |
2641 | ts->type = BT_INTEGER; | |
9d64df18 | 2642 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2643 | goto get_kind; |
2644 | } | |
2645 | ||
0fb56814 TB |
2646 | if ((matched_type && strcmp ("character", name) == 0) |
2647 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2648 | { |
0fb56814 | 2649 | if (matched_type |
524af0d6 JB |
2650 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2651 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2652 | return MATCH_ERROR; |
2653 | ||
6de9cd9a | 2654 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2655 | if (implicit_flag == 0) |
0fb56814 | 2656 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2657 | else |
0fb56814 TB |
2658 | m = MATCH_YES; |
2659 | ||
2660 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2661 | m = MATCH_ERROR; | |
2662 | ||
2663 | return m; | |
6de9cd9a DN |
2664 | } |
2665 | ||
0fb56814 TB |
2666 | if ((matched_type && strcmp ("real", name) == 0) |
2667 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2668 | { |
2669 | ts->type = BT_REAL; | |
9d64df18 | 2670 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2671 | goto get_kind; |
2672 | } | |
2673 | ||
0fb56814 TB |
2674 | if ((matched_type |
2675 | && (strcmp ("doubleprecision", name) == 0 | |
2676 | || (strcmp ("double", name) == 0 | |
2677 | && gfc_match (" precision") == MATCH_YES))) | |
2678 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2679 | { |
0fb56814 | 2680 | if (matched_type |
524af0d6 JB |
2681 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2682 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2683 | return MATCH_ERROR; |
2684 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2685 | return MATCH_ERROR; | |
2686 | ||
6de9cd9a | 2687 | ts->type = BT_REAL; |
9d64df18 | 2688 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2689 | return MATCH_YES; |
2690 | } | |
2691 | ||
0fb56814 TB |
2692 | if ((matched_type && strcmp ("complex", name) == 0) |
2693 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2694 | { |
2695 | ts->type = BT_COMPLEX; | |
9d64df18 | 2696 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2697 | goto get_kind; |
2698 | } | |
2699 | ||
0fb56814 TB |
2700 | if ((matched_type |
2701 | && (strcmp ("doublecomplex", name) == 0 | |
2702 | || (strcmp ("double", name) == 0 | |
2703 | && gfc_match (" complex") == MATCH_YES))) | |
2704 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2705 | { |
524af0d6 | 2706 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
2707 | return MATCH_ERROR; |
2708 | ||
2709 | if (matched_type | |
524af0d6 JB |
2710 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2711 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2712 | return MATCH_ERROR; |
2713 | ||
2714 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2715 | return MATCH_ERROR; |
2716 | ||
6de9cd9a | 2717 | ts->type = BT_COMPLEX; |
9d64df18 | 2718 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2719 | return MATCH_YES; |
2720 | } | |
2721 | ||
0fb56814 TB |
2722 | if ((matched_type && strcmp ("logical", name) == 0) |
2723 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2724 | { |
2725 | ts->type = BT_LOGICAL; | |
9d64df18 | 2726 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2727 | goto get_kind; |
2728 | } | |
2729 | ||
0fb56814 TB |
2730 | if (matched_type) |
2731 | m = gfc_match_char (')'); | |
2732 | ||
cf2b3c22 TB |
2733 | if (m == MATCH_YES) |
2734 | ts->type = BT_DERIVED; | |
2735 | else | |
727e8544 | 2736 | { |
528622fd JW |
2737 | /* Match CLASS declarations. */ |
2738 | m = gfc_match (" class ( * )"); | |
2739 | if (m == MATCH_ERROR) | |
2740 | return MATCH_ERROR; | |
2741 | else if (m == MATCH_YES) | |
2742 | { | |
8b704316 PT |
2743 | gfc_symbol *upe; |
2744 | gfc_symtree *st; | |
2745 | ts->type = BT_CLASS; | |
f5acf0f2 | 2746 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
2747 | if (upe == NULL) |
2748 | { | |
f5acf0f2 PT |
2749 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2750 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
2751 | st->n.sym = upe; |
2752 | gfc_set_sym_referenced (upe); | |
2753 | upe->refs++; | |
2754 | upe->ts.type = BT_VOID; | |
2755 | upe->attr.unlimited_polymorphic = 1; | |
2756 | /* This is essential to force the construction of | |
2757 | unlimited polymorphic component class containers. */ | |
2758 | upe->attr.zero_comp = 1; | |
524af0d6 JB |
2759 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2760 | &gfc_current_locus)) | |
528622fd JW |
2761 | return MATCH_ERROR; |
2762 | } | |
8b704316 PT |
2763 | else |
2764 | { | |
f5acf0f2 | 2765 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
8b704316 | 2766 | if (st == NULL) |
f5acf0f2 | 2767 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
2768 | st->n.sym = upe; |
2769 | upe->refs++; | |
2770 | } | |
2771 | ts->u.derived = upe; | |
2772 | return m; | |
2773 | } | |
528622fd | 2774 | |
727e8544 JW |
2775 | m = gfc_match (" class ( %n )", name); |
2776 | if (m != MATCH_YES) | |
2777 | return m; | |
cf2b3c22 | 2778 | ts->type = BT_CLASS; |
727e8544 | 2779 | |
524af0d6 | 2780 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 2781 | return MATCH_ERROR; |
727e8544 | 2782 | } |
6de9cd9a | 2783 | |
1c8bcdf7 PT |
2784 | /* Defer association of the derived type until the end of the |
2785 | specification block. However, if the derived type can be | |
f5acf0f2 | 2786 | found, add it to the typespec. */ |
1c8bcdf7 | 2787 | if (gfc_matching_function) |
e2d29968 | 2788 | { |
bc21d315 | 2789 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2790 | if (gfc_current_state () != COMP_INTERFACE |
2791 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2792 | { |
2793 | sym = gfc_find_dt_in_generic (sym); | |
2794 | ts->u.derived = sym; | |
2795 | } | |
e2d29968 PT |
2796 | return MATCH_YES; |
2797 | } | |
2798 | ||
2799 | /* Search for the name but allow the components to be defined later. If | |
2800 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 2801 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 2802 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
2803 | symtree with the all lower-case name contains the associated |
2804 | generic function. */ | |
2805 | dt_name = gfc_get_string ("%c%s", | |
2806 | (char) TOUPPER ((unsigned char) name[0]), | |
2807 | (const char*)&name[1]); | |
1c8bcdf7 | 2808 | sym = NULL; |
c3f34952 TB |
2809 | dt_sym = NULL; |
2810 | if (ts->kind != -1) | |
6de9cd9a | 2811 | { |
c3f34952 TB |
2812 | gfc_get_ha_symbol (name, &sym); |
2813 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2814 | { | |
2815 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2816 | return MATCH_ERROR; | |
2817 | } | |
2818 | if (sym->generic && !dt_sym) | |
2819 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2820 | } |
e2d29968 PT |
2821 | else if (ts->kind == -1) |
2822 | { | |
1c8bcdf7 PT |
2823 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2824 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2825 | gfc_find_symbol (name, NULL, iface, &sym); |
2826 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 2827 | { |
e2d29968 PT |
2828 | gfc_error ("Type name '%s' at %C is ambiguous", name); |
2829 | return MATCH_ERROR; | |
2830 | } | |
c3f34952 TB |
2831 | if (sym && sym->generic && !dt_sym) |
2832 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2833 | |
1c8bcdf7 | 2834 | ts->kind = 0; |
e2d29968 PT |
2835 | if (sym == NULL) |
2836 | return MATCH_NO; | |
2837 | } | |
6de9cd9a | 2838 | |
c3f34952 TB |
2839 | if ((sym->attr.flavor != FL_UNKNOWN |
2840 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2841 | || sym->attr.subroutine) | |
2842 | { | |
2843 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2844 | "entity at %L, which has the same name", name, | |
2845 | &sym->declared_at); | |
2846 | return MATCH_ERROR; | |
2847 | } | |
6de9cd9a | 2848 | |
1c8bcdf7 | 2849 | gfc_set_sym_referenced (sym); |
c3f34952 | 2850 | if (!sym->attr.generic |
524af0d6 | 2851 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2852 | return MATCH_ERROR; |
2853 | ||
2854 | if (!sym->attr.function | |
524af0d6 | 2855 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2856 | return MATCH_ERROR; |
2857 | ||
2858 | if (!dt_sym) | |
2859 | { | |
2860 | gfc_interface *intr, *head; | |
2861 | ||
2862 | /* Use upper case to save the actual derived-type symbol. */ | |
2863 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2864 | dt_sym->name = gfc_get_string (sym->name); | |
2865 | head = sym->generic; | |
2866 | intr = gfc_get_interface (); | |
2867 | intr->sym = dt_sym; | |
2868 | intr->where = gfc_current_locus; | |
2869 | intr->next = head; | |
2870 | sym->generic = intr; | |
2871 | sym->attr.if_source = IFSRC_DECL; | |
2872 | } | |
2873 | ||
2874 | gfc_set_sym_referenced (dt_sym); | |
2875 | ||
2876 | if (dt_sym->attr.flavor != FL_DERIVED | |
524af0d6 | 2877 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
2878 | return MATCH_ERROR; |
2879 | ||
2880 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
2881 | |
2882 | return MATCH_YES; | |
2883 | ||
2884 | get_kind: | |
0fb56814 | 2885 | if (matched_type |
524af0d6 JB |
2886 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2887 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2888 | return MATCH_ERROR; |
2889 | ||
6de9cd9a DN |
2890 | /* For all types except double, derived and character, look for an |
2891 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2892 | if (implicit_flag == 1) |
0fb56814 TB |
2893 | { |
2894 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2895 | return MATCH_ERROR; | |
2896 | ||
2897 | return MATCH_YES; | |
2898 | } | |
6de9cd9a | 2899 | |
0ff0dfbf TS |
2900 | if (gfc_current_form == FORM_FREE) |
2901 | { | |
0b3624f6 SK |
2902 | c = gfc_peek_ascii_char (); |
2903 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 2904 | && c != ':' && c != ',') |
0fb56814 TB |
2905 | { |
2906 | if (matched_type && c == ')') | |
2907 | { | |
2908 | gfc_next_ascii_char (); | |
2909 | return MATCH_YES; | |
2910 | } | |
2911 | return MATCH_NO; | |
2912 | } | |
0ff0dfbf TS |
2913 | } |
2914 | ||
e2d29968 | 2915 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a DN |
2916 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2917 | m = gfc_match_old_kind_spec (ts); | |
2918 | ||
0fb56814 TB |
2919 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2920 | return MATCH_ERROR; | |
2921 | ||
1c8bcdf7 PT |
2922 | /* Defer association of the KIND expression of function results |
2923 | until after USE and IMPORT statements. */ | |
2924 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2925 | || gfc_matching_function) | |
2926 | return MATCH_YES; | |
2927 | ||
6de9cd9a DN |
2928 | if (m == MATCH_NO) |
2929 | m = MATCH_YES; /* No kind specifier found. */ | |
2930 | ||
2931 | return m; | |
2932 | } | |
2933 | ||
2934 | ||
e5ddaa24 TS |
2935 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2936 | already matched in parse.c, or we would not end up here in the | |
2937 | first place. So the only thing we need to check, is if there is | |
2938 | trailing garbage. If not, the match is successful. */ | |
2939 | ||
2940 | match | |
2941 | gfc_match_implicit_none (void) | |
2942 | { | |
e5ddaa24 TS |
2943 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2944 | } | |
2945 | ||
2946 | ||
2947 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2948 | ||
2949 | static match | |
1107b970 | 2950 | match_implicit_range (void) |
e5ddaa24 | 2951 | { |
8fc541d3 FXC |
2952 | char c, c1, c2; |
2953 | int inner; | |
e5ddaa24 TS |
2954 | locus cur_loc; |
2955 | ||
2956 | cur_loc = gfc_current_locus; | |
2957 | ||
2958 | gfc_gobble_whitespace (); | |
8fc541d3 | 2959 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2960 | if (c != '(') |
2961 | { | |
2962 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2963 | goto bad; | |
2964 | } | |
2965 | ||
2966 | inner = 1; | |
2967 | while (inner) | |
2968 | { | |
2969 | gfc_gobble_whitespace (); | |
8fc541d3 | 2970 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2971 | if (!ISALPHA (c1)) |
2972 | goto bad; | |
2973 | ||
2974 | gfc_gobble_whitespace (); | |
8fc541d3 | 2975 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2976 | |
2977 | switch (c) | |
2978 | { | |
2979 | case ')': | |
66e4ab31 | 2980 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2981 | |
2982 | case ',': | |
2983 | c2 = c1; | |
2984 | break; | |
2985 | ||
2986 | case '-': | |
2987 | gfc_gobble_whitespace (); | |
8fc541d3 | 2988 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2989 | if (!ISALPHA (c2)) |
2990 | goto bad; | |
2991 | ||
2992 | gfc_gobble_whitespace (); | |
8fc541d3 | 2993 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2994 | |
2995 | if ((c != ',') && (c != ')')) | |
2996 | goto bad; | |
2997 | if (c == ')') | |
2998 | inner = 0; | |
2999 | ||
3000 | break; | |
3001 | ||
3002 | default: | |
3003 | goto bad; | |
3004 | } | |
3005 | ||
3006 | if (c1 > c2) | |
3007 | { | |
3008 | gfc_error ("Letters must be in alphabetic order in " | |
3009 | "IMPLICIT statement at %C"); | |
3010 | goto bad; | |
3011 | } | |
3012 | ||
3013 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3014 | implicits from this IMPLICIT statement. We do not check for |
3015 | conflicts with whatever earlier IMPLICIT statements may have | |
3016 | set. This is done when we've successfully finished matching | |
3017 | the current one. */ | |
524af0d6 | 3018 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3019 | goto bad; |
3020 | } | |
3021 | ||
3022 | return MATCH_YES; | |
3023 | ||
3024 | bad: | |
3025 | gfc_syntax_error (ST_IMPLICIT); | |
3026 | ||
3027 | gfc_current_locus = cur_loc; | |
3028 | return MATCH_ERROR; | |
3029 | } | |
3030 | ||
3031 | ||
3032 | /* Match an IMPLICIT statement, storing the types for | |
3033 | gfc_set_implicit() if the statement is accepted by the parser. | |
3034 | There is a strange looking, but legal syntactic construction | |
3035 | possible. It looks like: | |
3036 | ||
3037 | IMPLICIT INTEGER (a-b) (c-d) | |
3038 | ||
3039 | This is legal if "a-b" is a constant expression that happens to | |
3040 | equal one of the legal kinds for integers. The real problem | |
3041 | happens with an implicit specification that looks like: | |
3042 | ||
3043 | IMPLICIT INTEGER (a-b) | |
3044 | ||
3045 | In this case, a typespec matcher that is "greedy" (as most of the | |
3046 | matchers are) gobbles the character range as a kindspec, leaving | |
3047 | nothing left. We therefore have to go a bit more slowly in the | |
3048 | matching process by inhibiting the kindspec checking during | |
3049 | typespec matching and checking for a kind later. */ | |
3050 | ||
3051 | match | |
3052 | gfc_match_implicit (void) | |
3053 | { | |
3054 | gfc_typespec ts; | |
3055 | locus cur_loc; | |
8fc541d3 | 3056 | char c; |
e5ddaa24 TS |
3057 | match m; |
3058 | ||
44000dbb JD |
3059 | gfc_clear_ts (&ts); |
3060 | ||
e5ddaa24 TS |
3061 | /* We don't allow empty implicit statements. */ |
3062 | if (gfc_match_eos () == MATCH_YES) | |
3063 | { | |
3064 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3065 | return MATCH_ERROR; | |
3066 | } | |
3067 | ||
e5ddaa24 TS |
3068 | do |
3069 | { | |
1107b970 PB |
3070 | /* First cleanup. */ |
3071 | gfc_clear_new_implicit (); | |
3072 | ||
e5ddaa24 | 3073 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3074 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3075 | if (m == MATCH_ERROR) |
3076 | goto error; | |
3077 | if (m == MATCH_NO) | |
3078 | goto syntax; | |
3079 | ||
3080 | cur_loc = gfc_current_locus; | |
1107b970 | 3081 | m = match_implicit_range (); |
e5ddaa24 TS |
3082 | |
3083 | if (m == MATCH_YES) | |
3084 | { | |
1107b970 | 3085 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3086 | gfc_gobble_whitespace (); |
8fc541d3 | 3087 | c = gfc_next_ascii_char (); |
e5ddaa24 | 3088 | if ((c == '\n') || (c == ',')) |
1107b970 PB |
3089 | { |
3090 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3091 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3092 | { |
9d64df18 | 3093 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3094 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3095 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3096 | NULL, 1); | |
1107b970 PB |
3097 | } |
3098 | ||
3099 | /* Record the Successful match. */ | |
524af0d6 | 3100 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 PB |
3101 | return MATCH_ERROR; |
3102 | continue; | |
3103 | } | |
e5ddaa24 TS |
3104 | |
3105 | gfc_current_locus = cur_loc; | |
3106 | } | |
3107 | ||
1107b970 PB |
3108 | /* Discard the (incorrectly) matched range. */ |
3109 | gfc_clear_new_implicit (); | |
3110 | ||
3111 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3112 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3113 | m = gfc_match_char_spec (&ts); |
1107b970 | 3114 | else |
e5ddaa24 | 3115 | { |
e2d29968 | 3116 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3117 | if (m == MATCH_NO) |
1107b970 PB |
3118 | { |
3119 | m = gfc_match_old_kind_spec (&ts); | |
3120 | if (m == MATCH_ERROR) | |
3121 | goto error; | |
3122 | if (m == MATCH_NO) | |
3123 | goto syntax; | |
3124 | } | |
e5ddaa24 | 3125 | } |
1107b970 PB |
3126 | if (m == MATCH_ERROR) |
3127 | goto error; | |
e5ddaa24 | 3128 | |
1107b970 | 3129 | m = match_implicit_range (); |
e5ddaa24 TS |
3130 | if (m == MATCH_ERROR) |
3131 | goto error; | |
3132 | if (m == MATCH_NO) | |
3133 | goto syntax; | |
3134 | ||
3135 | gfc_gobble_whitespace (); | |
8fc541d3 | 3136 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3137 | if ((c != '\n') && (c != ',')) |
3138 | goto syntax; | |
3139 | ||
524af0d6 | 3140 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3141 | return MATCH_ERROR; |
e5ddaa24 TS |
3142 | } |
3143 | while (c == ','); | |
3144 | ||
1107b970 | 3145 | return MATCH_YES; |
e5ddaa24 TS |
3146 | |
3147 | syntax: | |
3148 | gfc_syntax_error (ST_IMPLICIT); | |
3149 | ||
3150 | error: | |
3151 | return MATCH_ERROR; | |
3152 | } | |
3153 | ||
66e4ab31 | 3154 | |
8998be20 TB |
3155 | match |
3156 | gfc_match_import (void) | |
3157 | { | |
3158 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3159 | match m; | |
3160 | gfc_symbol *sym; | |
3161 | gfc_symtree *st; | |
3162 | ||
66e4ab31 SK |
3163 | if (gfc_current_ns->proc_name == NULL |
3164 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3165 | { |
3166 | gfc_error ("IMPORT statement at %C only permitted in " | |
3167 | "an INTERFACE body"); | |
3168 | return MATCH_ERROR; | |
3169 | } | |
3170 | ||
524af0d6 | 3171 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3172 | return MATCH_ERROR; |
3173 | ||
3174 | if (gfc_match_eos () == MATCH_YES) | |
3175 | { | |
3176 | /* All host variables should be imported. */ | |
3177 | gfc_current_ns->has_import_set = 1; | |
3178 | return MATCH_YES; | |
3179 | } | |
3180 | ||
3181 | if (gfc_match (" ::") == MATCH_YES) | |
3182 | { | |
3183 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3184 | { |
3185 | gfc_error ("Expecting list of named entities at %C"); | |
3186 | return MATCH_ERROR; | |
3187 | } | |
8998be20 TB |
3188 | } |
3189 | ||
3190 | for(;;) | |
3191 | { | |
2e8d9212 | 3192 | sym = NULL; |
8998be20 TB |
3193 | m = gfc_match (" %n", name); |
3194 | switch (m) | |
3195 | { | |
3196 | case MATCH_YES: | |
36d3fb4c | 3197 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3198 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
3199 | { |
3200 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3201 | return MATCH_ERROR; | |
3202 | } | |
4e2cf5f5 | 3203 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3204 | && gfc_find_symbol (name, |
3205 | gfc_current_ns->proc_name->ns->parent, | |
3206 | 1, &sym)) | |
636dff67 SK |
3207 | { |
3208 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3209 | return MATCH_ERROR; | |
3210 | } | |
3211 | ||
3212 | if (sym == NULL) | |
3213 | { | |
3214 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3215 | "at %C - does not exist.", name); | |
3216 | return MATCH_ERROR; | |
3217 | } | |
3218 | ||
dd8b9dde | 3219 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 SK |
3220 | { |
3221 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3222 | "at %C.", name); | |
3223 | goto next_item; | |
3224 | } | |
3225 | ||
dd8b9dde | 3226 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3227 | st->n.sym = sym; |
3228 | sym->refs++; | |
5a8af0b4 | 3229 | sym->attr.imported = 1; |
8998be20 | 3230 | |
c3f34952 TB |
3231 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3232 | { | |
3233 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3234 | letter of the name capitalized; the symtree with the all |
c3f34952 TB |
3235 | lower-case name contains the associated generic function. */ |
3236 | st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
3237 | gfc_get_string ("%c%s", | |
dd8b9dde TB |
3238 | (char) TOUPPER ((unsigned char) name[0]), |
3239 | &name[1])); | |
c3f34952 TB |
3240 | st->n.sym = sym; |
3241 | sym->refs++; | |
3242 | sym->attr.imported = 1; | |
3243 | } | |
3244 | ||
8998be20 TB |
3245 | goto next_item; |
3246 | ||
3247 | case MATCH_NO: | |
3248 | break; | |
3249 | ||
3250 | case MATCH_ERROR: | |
3251 | return MATCH_ERROR; | |
3252 | } | |
3253 | ||
3254 | next_item: | |
3255 | if (gfc_match_eos () == MATCH_YES) | |
3256 | break; | |
3257 | if (gfc_match_char (',') != MATCH_YES) | |
3258 | goto syntax; | |
3259 | } | |
3260 | ||
3261 | return MATCH_YES; | |
3262 | ||
3263 | syntax: | |
3264 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3265 | return MATCH_ERROR; | |
3266 | } | |
e5ddaa24 | 3267 | |
66e4ab31 | 3268 | |
f2449db4 RS |
3269 | /* A minimal implementation of gfc_match without whitespace, escape |
3270 | characters or variable arguments. Returns true if the next | |
3271 | characters match the TARGET template exactly. */ | |
3272 | ||
3273 | static bool | |
3274 | match_string_p (const char *target) | |
3275 | { | |
3276 | const char *p; | |
3277 | ||
3278 | for (p = target; *p; p++) | |
8fc541d3 | 3279 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3280 | return false; |
3281 | return true; | |
3282 | } | |
3283 | ||
6de9cd9a DN |
3284 | /* Matches an attribute specification including array specs. If |
3285 | successful, leaves the variables current_attr and current_as | |
3286 | holding the specification. Also sets the colon_seen variable for | |
3287 | later use by matchers associated with initializations. | |
3288 | ||
3289 | This subroutine is a little tricky in the sense that we don't know | |
3290 | if we really have an attr-spec until we hit the double colon. | |
3291 | Until that time, we can only return MATCH_NO. This forces us to | |
3292 | check for duplicate specification at this level. */ | |
3293 | ||
3294 | static match | |
3295 | match_attr_spec (void) | |
3296 | { | |
6de9cd9a | 3297 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3298 | enum |
6de9cd9a DN |
3299 | { GFC_DECL_BEGIN = 0, |
3300 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3301 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3302 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3303 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3304 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3305 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3306 | }; |
6de9cd9a DN |
3307 | |
3308 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3309 | #define NUM_DECL GFC_DECL_END | |
3310 | ||
6de9cd9a DN |
3311 | locus start, seen_at[NUM_DECL]; |
3312 | int seen[NUM_DECL]; | |
09639a83 | 3313 | unsigned int d; |
6de9cd9a DN |
3314 | const char *attr; |
3315 | match m; | |
524af0d6 | 3316 | bool t; |
6de9cd9a DN |
3317 | |
3318 | gfc_clear_attr (¤t_attr); | |
63645982 | 3319 | start = gfc_current_locus; |
6de9cd9a DN |
3320 | |
3321 | current_as = NULL; | |
3322 | colon_seen = 0; | |
3323 | ||
3324 | /* See if we get all of the keywords up to the final double colon. */ | |
3325 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3326 | seen[d] = 0; | |
3327 | ||
3328 | for (;;) | |
3329 | { | |
8fc541d3 | 3330 | char ch; |
a8b3b0b6 | 3331 | |
f2449db4 RS |
3332 | d = DECL_NONE; |
3333 | gfc_gobble_whitespace (); | |
3334 | ||
8fc541d3 | 3335 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3336 | if (ch == ':') |
3337 | { | |
3338 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3339 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3340 | break; |
3341 | } | |
3342 | else if (ch == ',') | |
a8b3b0b6 | 3343 | { |
a8b3b0b6 | 3344 | gfc_gobble_whitespace (); |
8fc541d3 | 3345 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3346 | { |
f2449db4 | 3347 | case 'a': |
1eee5628 TB |
3348 | gfc_next_ascii_char (); |
3349 | switch (gfc_next_ascii_char ()) | |
3350 | { | |
3351 | case 'l': | |
3352 | if (match_string_p ("locatable")) | |
3353 | { | |
3354 | /* Matched "allocatable". */ | |
3355 | d = DECL_ALLOCATABLE; | |
3356 | } | |
3357 | break; | |
3358 | ||
3359 | case 's': | |
3360 | if (match_string_p ("ynchronous")) | |
3361 | { | |
3362 | /* Matched "asynchronous". */ | |
3363 | d = DECL_ASYNCHRONOUS; | |
3364 | } | |
3365 | break; | |
3366 | } | |
fe4e525c | 3367 | break; |
f2449db4 RS |
3368 | |
3369 | case 'b': | |
a8b3b0b6 | 3370 | /* Try and match the bind(c). */ |
1eabf70a | 3371 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3372 | if (m == MATCH_YES) |
a8b3b0b6 | 3373 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3374 | else if (m == MATCH_ERROR) |
3375 | goto cleanup; | |
f2449db4 RS |
3376 | break; |
3377 | ||
be59db2d | 3378 | case 'c': |
fe4e525c TB |
3379 | gfc_next_ascii_char (); |
3380 | if ('o' != gfc_next_ascii_char ()) | |
3381 | break; | |
3382 | switch (gfc_next_ascii_char ()) | |
3383 | { | |
3384 | case 'd': | |
3385 | if (match_string_p ("imension")) | |
3386 | { | |
3387 | d = DECL_CODIMENSION; | |
3388 | break; | |
3389 | } | |
3390 | case 'n': | |
3391 | if (match_string_p ("tiguous")) | |
3392 | { | |
3393 | d = DECL_CONTIGUOUS; | |
3394 | break; | |
3395 | } | |
3396 | } | |
be59db2d TB |
3397 | break; |
3398 | ||
f2449db4 RS |
3399 | case 'd': |
3400 | if (match_string_p ("dimension")) | |
3401 | d = DECL_DIMENSION; | |
3402 | break; | |
3403 | ||
3404 | case 'e': | |
3405 | if (match_string_p ("external")) | |
3406 | d = DECL_EXTERNAL; | |
3407 | break; | |
3408 | ||
3409 | case 'i': | |
3410 | if (match_string_p ("int")) | |
3411 | { | |
8fc541d3 | 3412 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3413 | if (ch == 'e') |
3414 | { | |
3415 | if (match_string_p ("nt")) | |
3416 | { | |
3417 | /* Matched "intent". */ | |
3418 | /* TODO: Call match_intent_spec from here. */ | |
3419 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3420 | d = DECL_INOUT; | |
3421 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3422 | d = DECL_IN; | |
3423 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3424 | d = DECL_OUT; | |
3425 | } | |
3426 | } | |
3427 | else if (ch == 'r') | |
3428 | { | |
3429 | if (match_string_p ("insic")) | |
3430 | { | |
3431 | /* Matched "intrinsic". */ | |
3432 | d = DECL_INTRINSIC; | |
3433 | } | |
3434 | } | |
3435 | } | |
3436 | break; | |
3437 | ||
3438 | case 'o': | |
3439 | if (match_string_p ("optional")) | |
3440 | d = DECL_OPTIONAL; | |
3441 | break; | |
3442 | ||
3443 | case 'p': | |
8fc541d3 FXC |
3444 | gfc_next_ascii_char (); |
3445 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3446 | { |
3447 | case 'a': | |
3448 | if (match_string_p ("rameter")) | |
3449 | { | |
3450 | /* Matched "parameter". */ | |
3451 | d = DECL_PARAMETER; | |
3452 | } | |
3453 | break; | |
3454 | ||
3455 | case 'o': | |
3456 | if (match_string_p ("inter")) | |
3457 | { | |
3458 | /* Matched "pointer". */ | |
3459 | d = DECL_POINTER; | |
3460 | } | |
3461 | break; | |
3462 | ||
3463 | case 'r': | |
8fc541d3 | 3464 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3465 | if (ch == 'i') |
3466 | { | |
3467 | if (match_string_p ("vate")) | |
3468 | { | |
3469 | /* Matched "private". */ | |
3470 | d = DECL_PRIVATE; | |
3471 | } | |
3472 | } | |
3473 | else if (ch == 'o') | |
3474 | { | |
3475 | if (match_string_p ("tected")) | |
3476 | { | |
3477 | /* Matched "protected". */ | |
3478 | d = DECL_PROTECTED; | |
3479 | } | |
3480 | } | |
3481 | break; | |
3482 | ||
3483 | case 'u': | |
3484 | if (match_string_p ("blic")) | |
3485 | { | |
3486 | /* Matched "public". */ | |
3487 | d = DECL_PUBLIC; | |
3488 | } | |
3489 | break; | |
3490 | } | |
3491 | break; | |
3492 | ||
3493 | case 's': | |
3494 | if (match_string_p ("save")) | |
3495 | d = DECL_SAVE; | |
3496 | break; | |
3497 | ||
3498 | case 't': | |
3499 | if (match_string_p ("target")) | |
3500 | d = DECL_TARGET; | |
3501 | break; | |
3502 | ||
3503 | case 'v': | |
8fc541d3 FXC |
3504 | gfc_next_ascii_char (); |
3505 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3506 | if (ch == 'a') |
3507 | { | |
3508 | if (match_string_p ("lue")) | |
3509 | { | |
3510 | /* Matched "value". */ | |
3511 | d = DECL_VALUE; | |
3512 | } | |
3513 | } | |
3514 | else if (ch == 'o') | |
3515 | { | |
3516 | if (match_string_p ("latile")) | |
3517 | { | |
3518 | /* Matched "volatile". */ | |
3519 | d = DECL_VOLATILE; | |
3520 | } | |
3521 | } | |
3522 | break; | |
a8b3b0b6 CR |
3523 | } |
3524 | } | |
d468bcdb | 3525 | |
f2449db4 RS |
3526 | /* No double colon and no recognizable decl_type, so assume that |
3527 | we've been looking at something else the whole time. */ | |
3528 | if (d == DECL_NONE) | |
3529 | { | |
3530 | m = MATCH_NO; | |
3531 | goto cleanup; | |
3532 | } | |
d51347f9 | 3533 | |
acb388a0 JD |
3534 | /* Check to make sure any parens are paired up correctly. */ |
3535 | if (gfc_match_parens () == MATCH_ERROR) | |
3536 | { | |
3537 | m = MATCH_ERROR; | |
3538 | goto cleanup; | |
3539 | } | |
3540 | ||
6de9cd9a | 3541 | seen[d]++; |
63645982 | 3542 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3543 | |
d3a9eea2 | 3544 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3545 | { |
d3a9eea2 | 3546 | gfc_array_spec *as = NULL; |
6de9cd9a | 3547 | |
d3a9eea2 TB |
3548 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3549 | d == DECL_CODIMENSION); | |
3550 | ||
3551 | if (current_as == NULL) | |
3552 | current_as = as; | |
3553 | else if (m == MATCH_YES) | |
6de9cd9a | 3554 | { |
524af0d6 | 3555 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 3556 | m = MATCH_ERROR; |
cede9502 | 3557 | free (as); |
6de9cd9a DN |
3558 | } |
3559 | ||
be59db2d TB |
3560 | if (m == MATCH_NO) |
3561 | { | |
d3a9eea2 TB |
3562 | if (d == DECL_CODIMENSION) |
3563 | gfc_error ("Missing codimension specification at %C"); | |
3564 | else | |
3565 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3566 | m = MATCH_ERROR; |
3567 | } | |
3568 | ||
3569 | if (m == MATCH_ERROR) | |
3570 | goto cleanup; | |
3571 | } | |
6de9cd9a DN |
3572 | } |
3573 | ||
6de9cd9a DN |
3574 | /* Since we've seen a double colon, we have to be looking at an |
3575 | attr-spec. This means that we can now issue errors. */ | |
3576 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3577 | if (seen[d] > 1) | |
3578 | { | |
3579 | switch (d) | |
3580 | { | |
3581 | case DECL_ALLOCATABLE: | |
3582 | attr = "ALLOCATABLE"; | |
3583 | break; | |
1eee5628 TB |
3584 | case DECL_ASYNCHRONOUS: |
3585 | attr = "ASYNCHRONOUS"; | |
3586 | break; | |
be59db2d TB |
3587 | case DECL_CODIMENSION: |
3588 | attr = "CODIMENSION"; | |
3589 | break; | |
fe4e525c TB |
3590 | case DECL_CONTIGUOUS: |
3591 | attr = "CONTIGUOUS"; | |
3592 | break; | |
6de9cd9a DN |
3593 | case DECL_DIMENSION: |
3594 | attr = "DIMENSION"; | |
3595 | break; | |
3596 | case DECL_EXTERNAL: | |
3597 | attr = "EXTERNAL"; | |
3598 | break; | |
3599 | case DECL_IN: | |
3600 | attr = "INTENT (IN)"; | |
3601 | break; | |
3602 | case DECL_OUT: | |
3603 | attr = "INTENT (OUT)"; | |
3604 | break; | |
3605 | case DECL_INOUT: | |
3606 | attr = "INTENT (IN OUT)"; | |
3607 | break; | |
3608 | case DECL_INTRINSIC: | |
3609 | attr = "INTRINSIC"; | |
3610 | break; | |
3611 | case DECL_OPTIONAL: | |
3612 | attr = "OPTIONAL"; | |
3613 | break; | |
3614 | case DECL_PARAMETER: | |
3615 | attr = "PARAMETER"; | |
3616 | break; | |
3617 | case DECL_POINTER: | |
3618 | attr = "POINTER"; | |
3619 | break; | |
ee7e677f TB |
3620 | case DECL_PROTECTED: |
3621 | attr = "PROTECTED"; | |
3622 | break; | |
6de9cd9a DN |
3623 | case DECL_PRIVATE: |
3624 | attr = "PRIVATE"; | |
3625 | break; | |
3626 | case DECL_PUBLIC: | |
3627 | attr = "PUBLIC"; | |
3628 | break; | |
3629 | case DECL_SAVE: | |
3630 | attr = "SAVE"; | |
3631 | break; | |
3632 | case DECL_TARGET: | |
3633 | attr = "TARGET"; | |
3634 | break; | |
a8b3b0b6 CR |
3635 | case DECL_IS_BIND_C: |
3636 | attr = "IS_BIND_C"; | |
3637 | break; | |
3638 | case DECL_VALUE: | |
3639 | attr = "VALUE"; | |
3640 | break; | |
775e6c3a TB |
3641 | case DECL_VOLATILE: |
3642 | attr = "VOLATILE"; | |
3643 | break; | |
6de9cd9a | 3644 | default: |
66e4ab31 | 3645 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3646 | } |
3647 | ||
3648 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3649 | m = MATCH_ERROR; | |
3650 | goto cleanup; | |
3651 | } | |
3652 | ||
3653 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3654 | to the current attribute. */ | |
3655 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3656 | { | |
3657 | if (seen[d] == 0) | |
3658 | continue; | |
3659 | ||
3660 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3661 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3662 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3663 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3664 | { |
5046aff5 PT |
3665 | if (d == DECL_ALLOCATABLE) |
3666 | { | |
524af0d6 JB |
3667 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3668 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
3669 | { |
3670 | m = MATCH_ERROR; | |
3671 | goto cleanup; | |
3672 | } | |
636dff67 SK |
3673 | } |
3674 | else | |
5046aff5 PT |
3675 | { |
3676 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3677 | &seen_at[d]); |
5046aff5 PT |
3678 | m = MATCH_ERROR; |
3679 | goto cleanup; | |
3680 | } | |
6de9cd9a DN |
3681 | } |
3682 | ||
4213f93b | 3683 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3684 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3685 | { |
3686 | if (d == DECL_PRIVATE) | |
3687 | attr = "PRIVATE"; | |
3688 | else | |
3689 | attr = "PUBLIC"; | |
d51347f9 TB |
3690 | if (gfc_current_state () == COMP_DERIVED |
3691 | && gfc_state_stack->previous | |
3692 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3693 | { | |
524af0d6 JB |
3694 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3695 | "at %L in a TYPE definition", attr, | |
3696 | &seen_at[d])) | |
d51347f9 TB |
3697 | { |
3698 | m = MATCH_ERROR; | |
3699 | goto cleanup; | |
3700 | } | |
3701 | } | |
3702 | else | |
3703 | { | |
3704 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3705 | "specification part of a module", attr, &seen_at[d]); | |
3706 | m = MATCH_ERROR; | |
3707 | goto cleanup; | |
3708 | } | |
4213f93b PT |
3709 | } |
3710 | ||
6de9cd9a DN |
3711 | switch (d) |
3712 | { | |
3713 | case DECL_ALLOCATABLE: | |
3714 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3715 | break; | |
3716 | ||
1eee5628 | 3717 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
3718 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3719 | t = false; | |
1eee5628 TB |
3720 | else |
3721 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3722 | break; | |
3723 | ||
be59db2d TB |
3724 | case DECL_CODIMENSION: |
3725 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3726 | break; | |
3727 | ||
fe4e525c | 3728 | case DECL_CONTIGUOUS: |
524af0d6 JB |
3729 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3730 | t = false; | |
fe4e525c TB |
3731 | else |
3732 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3733 | break; | |
3734 | ||
6de9cd9a | 3735 | case DECL_DIMENSION: |
231b2fcc | 3736 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3737 | break; |
3738 | ||
3739 | case DECL_EXTERNAL: | |
3740 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3741 | break; | |
3742 | ||
3743 | case DECL_IN: | |
3744 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3745 | break; | |
3746 | ||
3747 | case DECL_OUT: | |
3748 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3749 | break; | |
3750 | ||
3751 | case DECL_INOUT: | |
3752 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3753 | break; | |
3754 | ||
3755 | case DECL_INTRINSIC: | |
3756 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3757 | break; | |
3758 | ||
3759 | case DECL_OPTIONAL: | |
3760 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3761 | break; | |
3762 | ||
3763 | case DECL_PARAMETER: | |
231b2fcc | 3764 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3765 | break; |
3766 | ||
3767 | case DECL_POINTER: | |
3768 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3769 | break; | |
3770 | ||
ee7e677f TB |
3771 | case DECL_PROTECTED: |
3772 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3773 | { | |
3774 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3775 | "part of a module"); | |
524af0d6 | 3776 | t = false; |
ee7e677f TB |
3777 | break; |
3778 | } | |
3779 | ||
524af0d6 JB |
3780 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
3781 | t = false; | |
ee7e677f TB |
3782 | else |
3783 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3784 | break; | |
3785 | ||
6de9cd9a | 3786 | case DECL_PRIVATE: |
231b2fcc TS |
3787 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3788 | &seen_at[d]); | |
6de9cd9a DN |
3789 | break; |
3790 | ||
3791 | case DECL_PUBLIC: | |
231b2fcc TS |
3792 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3793 | &seen_at[d]); | |
6de9cd9a DN |
3794 | break; |
3795 | ||
3796 | case DECL_SAVE: | |
80f95228 | 3797 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3798 | break; |
3799 | ||
3800 | case DECL_TARGET: | |
3801 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3802 | break; | |
3803 | ||
a8b3b0b6 CR |
3804 | case DECL_IS_BIND_C: |
3805 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3806 | break; | |
f5acf0f2 | 3807 | |
06469efd | 3808 | case DECL_VALUE: |
524af0d6 JB |
3809 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
3810 | t = false; | |
06469efd PT |
3811 | else |
3812 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3813 | break; | |
3814 | ||
775e6c3a | 3815 | case DECL_VOLATILE: |
524af0d6 JB |
3816 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
3817 | t = false; | |
775e6c3a TB |
3818 | else |
3819 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3820 | break; | |
3821 | ||
6de9cd9a DN |
3822 | default: |
3823 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3824 | } | |
3825 | ||
524af0d6 | 3826 | if (!t) |
6de9cd9a DN |
3827 | { |
3828 | m = MATCH_ERROR; | |
3829 | goto cleanup; | |
3830 | } | |
3831 | } | |
3832 | ||
d1f6dfe6 TB |
3833 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
3834 | if (gfc_current_state () == COMP_MODULE && !current_attr.save | |
3835 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) | |
80f95228 JW |
3836 | current_attr.save = SAVE_IMPLICIT; |
3837 | ||
6de9cd9a DN |
3838 | colon_seen = 1; |
3839 | return MATCH_YES; | |
3840 | ||
3841 | cleanup: | |
63645982 | 3842 | gfc_current_locus = start; |
6de9cd9a DN |
3843 | gfc_free_array_spec (current_as); |
3844 | current_as = NULL; | |
3845 | return m; | |
3846 | } | |
3847 | ||
3848 | ||
a8b3b0b6 CR |
3849 | /* Set the binding label, dest_label, either with the binding label |
3850 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3851 | will be the symbol name in all lower case, as required by the draft | |
3852 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3853 | there is more than one argument (num_idents), it is an error. */ | |
3854 | ||
524af0d6 | 3855 | static bool |
f5acf0f2 | 3856 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 3857 | int num_idents) |
a8b3b0b6 | 3858 | { |
ad4a2f64 | 3859 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 3860 | { |
ad4a2f64 TB |
3861 | gfc_error ("Multiple identifiers provided with " |
3862 | "single NAME= specifier at %C"); | |
524af0d6 | 3863 | return false; |
ad4a2f64 | 3864 | } |
a8b3b0b6 | 3865 | |
62603fae | 3866 | if (curr_binding_label) |
eea58adb | 3867 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 3868 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
3869 | else |
3870 | { | |
3871 | /* No binding label given, and the NAME= specifier did not exist, | |
3872 | which means there was no NAME="". */ | |
3873 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 3874 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 3875 | } |
f5acf0f2 | 3876 | |
524af0d6 | 3877 | return true; |
a8b3b0b6 CR |
3878 | } |
3879 | ||
3880 | ||
3881 | /* Set the status of the given common block as being BIND(C) or not, | |
3882 | depending on the given parameter, is_bind_c. */ | |
3883 | ||
3884 | void | |
3885 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3886 | { | |
3887 | com_block->is_bind_c = is_bind_c; | |
3888 | return; | |
3889 | } | |
3890 | ||
3891 | ||
3892 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3893 | ||
524af0d6 | 3894 | bool |
00820a2a | 3895 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 3896 | { |
bc21d315 | 3897 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 3898 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 3899 | ? true : false; |
00820a2a | 3900 | else if (ts->type == BT_CLASS) |
524af0d6 | 3901 | return false; |
45a69325 | 3902 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 3903 | return false; |
45a69325 | 3904 | |
524af0d6 | 3905 | return true; |
a8b3b0b6 CR |
3906 | } |
3907 | ||
3908 | ||
3909 | /* Verify that the variables of a given common block, which has been | |
3910 | defined with the attribute specifier bind(c), to be of a C | |
3911 | interoperable type. Errors will be reported here, if | |
3912 | encountered. */ | |
3913 | ||
524af0d6 | 3914 | bool |
a8b3b0b6 CR |
3915 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3916 | { | |
3917 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 3918 | bool retval = true; |
a8b3b0b6 CR |
3919 | |
3920 | curr_sym = com_block->head; | |
f5acf0f2 | 3921 | |
a8b3b0b6 CR |
3922 | /* Make sure we have at least one symbol. */ |
3923 | if (curr_sym == NULL) | |
3924 | return retval; | |
3925 | ||
3926 | /* Here we know we have a symbol, so we'll execute this loop | |
3927 | at least once. */ | |
3928 | do | |
3929 | { | |
3930 | /* The second to last param, 1, says this is in a common block. */ | |
3931 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3932 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 3933 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
3934 | |
3935 | return retval; | |
3936 | } | |
3937 | ||
3938 | ||
3939 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3940 | an appropriate error message is reported. */ | |
3941 | ||
524af0d6 | 3942 | bool |
a8b3b0b6 CR |
3943 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3944 | int is_in_common, gfc_common_head *com_block) | |
3945 | { | |
8327f9c2 | 3946 | bool bind_c_function = false; |
524af0d6 | 3947 | bool retval = true; |
d8fa96e0 | 3948 | |
8327f9c2 TB |
3949 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3950 | bind_c_function = true; | |
3951 | ||
d8fa96e0 CR |
3952 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3953 | { | |
3954 | tmp_sym = tmp_sym->result; | |
3955 | /* Make sure it wasn't an implicitly typed result. */ | |
0e193637 | 3956 | if (tmp_sym->attr.implicit_type && gfc_option.warn_c_binding_type) |
d8fa96e0 CR |
3957 | { |
3958 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3959 | "%L may not be C interoperable", tmp_sym->name, | |
3960 | &tmp_sym->declared_at); | |
3961 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3962 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3963 | tmp_sym->ts.is_c_interop = 1; | |
3964 | tmp_sym->attr.is_c_interop = 1; | |
3965 | } | |
3966 | } | |
8327f9c2 | 3967 | |
a8b3b0b6 CR |
3968 | /* Here, we know we have the bind(c) attribute, so if we have |
3969 | enough type info, then verify that it's a C interop kind. | |
3970 | The info could be in the symbol already, or possibly still in | |
3971 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 3972 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 3973 | { |
524af0d6 | 3974 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
3975 | { |
3976 | /* See if we're dealing with a sym in a common block or not. */ | |
0e193637 | 3977 | if (is_in_common == 1 && gfc_option.warn_c_binding_type) |
a8b3b0b6 CR |
3978 | { |
3979 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3980 | "may not be a C interoperable " | |
3981 | "kind though common block '%s' is BIND(C)", | |
3982 | tmp_sym->name, com_block->name, | |
3983 | &(tmp_sym->declared_at), com_block->name); | |
3984 | } | |
3985 | else | |
3986 | { | |
3987 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3988 | gfc_error ("Type declaration '%s' at %L is not C " | |
3989 | "interoperable but it is BIND(C)", | |
3990 | tmp_sym->name, &(tmp_sym->declared_at)); | |
0e193637 | 3991 | else if (gfc_option.warn_c_binding_type) |
a8b3b0b6 CR |
3992 | gfc_warning ("Variable '%s' at %L " |
3993 | "may not be a C interoperable " | |
3994 | "kind but it is bind(c)", | |
3995 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3996 | } | |
3997 | } | |
f5acf0f2 | 3998 | |
a8b3b0b6 CR |
3999 | /* Variables declared w/in a common block can't be bind(c) |
4000 | since there's no way for C to see these variables, so there's | |
4001 | semantically no reason for the attribute. */ | |
4002 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4003 | { | |
4004 | gfc_error ("Variable '%s' in common block '%s' at " | |
4005 | "%L cannot be declared with BIND(C) " | |
4006 | "since it is not a global", | |
4007 | tmp_sym->name, com_block->name, | |
4008 | &(tmp_sym->declared_at)); | |
524af0d6 | 4009 | retval = false; |
a8b3b0b6 | 4010 | } |
f5acf0f2 | 4011 | |
a8b3b0b6 CR |
4012 | /* Scalar variables that are bind(c) can not have the pointer |
4013 | or allocatable attributes. */ | |
4014 | if (tmp_sym->attr.is_bind_c == 1) | |
4015 | { | |
4016 | if (tmp_sym->attr.pointer == 1) | |
4017 | { | |
4018 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4019 | "POINTER and BIND(C) attributes", | |
4020 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4021 | retval = false; |
a8b3b0b6 CR |
4022 | } |
4023 | ||
4024 | if (tmp_sym->attr.allocatable == 1) | |
4025 | { | |
4026 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4027 | "ALLOCATABLE and BIND(C) attributes", | |
4028 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4029 | retval = false; |
a8b3b0b6 CR |
4030 | } |
4031 | ||
8327f9c2 TB |
4032 | } |
4033 | ||
4034 | /* If it is a BIND(C) function, make sure the return value is a | |
4035 | scalar value. The previous tests in this function made sure | |
4036 | the type is interoperable. */ | |
4037 | if (bind_c_function && tmp_sym->as != NULL) | |
4038 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
4039 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
4040 | ||
4041 | /* BIND(C) functions can not return a character string. */ | |
4042 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4043 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4044 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4045 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
8327f9c2 | 4046 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
a8b3b0b6 CR |
4047 | "be a character string", tmp_sym->name, |
4048 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4049 | } |
4050 | ||
4051 | /* See if the symbol has been marked as private. If it has, make sure | |
4052 | there is no binding label and warn the user if there is one. */ | |
4053 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4054 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4055 | /* Use gfc_warning_now because we won't say that the symbol fails |
4056 | just because of this. */ | |
4057 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
4058 | "given the binding label '%s'", tmp_sym->name, | |
4059 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
4060 | ||
4061 | return retval; | |
4062 | } | |
4063 | ||
4064 | ||
4065 | /* Set the appropriate fields for a symbol that's been declared as | |
4066 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4067 | the type is C interoperable. Errors are reported by the functions | |
4068 | used to set/test these fields. */ | |
4069 | ||
524af0d6 | 4070 | bool |
a8b3b0b6 CR |
4071 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4072 | { | |
524af0d6 | 4073 | bool retval = true; |
f5acf0f2 | 4074 | |
a8b3b0b6 CR |
4075 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4076 | ||
4077 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4078 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4079 | ||
524af0d6 JB |
4080 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4081 | return false; | |
a8b3b0b6 CR |
4082 | |
4083 | return retval; | |
4084 | } | |
4085 | ||
4086 | ||
4087 | /* Set the fields marking the given common block as BIND(C), including | |
4088 | a binding label, and report any errors encountered. */ | |
4089 | ||
524af0d6 | 4090 | bool |
a8b3b0b6 CR |
4091 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4092 | { | |
524af0d6 | 4093 | bool retval = true; |
f5acf0f2 | 4094 | |
a8b3b0b6 | 4095 | /* destLabel, common name, typespec (which may have binding label). */ |
524af0d6 JB |
4096 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4097 | num_idents)) | |
4098 | return false; | |
a8b3b0b6 CR |
4099 | |
4100 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4101 | set_com_block_bind_c (com_block, 1); | |
4102 | ||
4103 | return retval; | |
4104 | } | |
4105 | ||
4106 | ||
4107 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4108 | attribute applies to. */ | |
4109 | ||
524af0d6 | 4110 | bool |
a8b3b0b6 CR |
4111 | get_bind_c_idents (void) |
4112 | { | |
4113 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4114 | int num_idents = 0; | |
4115 | gfc_symbol *tmp_sym = NULL; | |
4116 | match found_id; | |
4117 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4118 | |
a8b3b0b6 CR |
4119 | if (gfc_match_name (name) == MATCH_YES) |
4120 | { | |
4121 | found_id = MATCH_YES; | |
4122 | gfc_get_ha_symbol (name, &tmp_sym); | |
4123 | } | |
4124 | else if (match_common_name (name) == MATCH_YES) | |
4125 | { | |
4126 | found_id = MATCH_YES; | |
4127 | com_block = gfc_get_common (name, 0); | |
4128 | } | |
4129 | else | |
4130 | { | |
4131 | gfc_error ("Need either entity or common block name for " | |
4132 | "attribute specification statement at %C"); | |
524af0d6 | 4133 | return false; |
a8b3b0b6 | 4134 | } |
f5acf0f2 | 4135 | |
a8b3b0b6 CR |
4136 | /* Save the current identifier and look for more. */ |
4137 | do | |
4138 | { | |
4139 | /* Increment the number of identifiers found for this spec stmt. */ | |
4140 | num_idents++; | |
4141 | ||
4142 | /* Make sure we have a sym or com block, and verify that it can | |
4143 | be bind(c). Set the appropriate field(s) and look for more | |
4144 | identifiers. */ | |
f5acf0f2 | 4145 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4146 | { |
4147 | if (tmp_sym != NULL) | |
4148 | { | |
524af0d6 JB |
4149 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4150 | return false; | |
a8b3b0b6 CR |
4151 | } |
4152 | else | |
4153 | { | |
524af0d6 JB |
4154 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4155 | return false; | |
a8b3b0b6 | 4156 | } |
f5acf0f2 | 4157 | |
a8b3b0b6 CR |
4158 | /* Look to see if we have another identifier. */ |
4159 | tmp_sym = NULL; | |
4160 | if (gfc_match_eos () == MATCH_YES) | |
4161 | found_id = MATCH_NO; | |
4162 | else if (gfc_match_char (',') != MATCH_YES) | |
4163 | found_id = MATCH_NO; | |
4164 | else if (gfc_match_name (name) == MATCH_YES) | |
4165 | { | |
4166 | found_id = MATCH_YES; | |
4167 | gfc_get_ha_symbol (name, &tmp_sym); | |
4168 | } | |
4169 | else if (match_common_name (name) == MATCH_YES) | |
4170 | { | |
4171 | found_id = MATCH_YES; | |
4172 | com_block = gfc_get_common (name, 0); | |
4173 | } | |
4174 | else | |
4175 | { | |
4176 | gfc_error ("Missing entity or common block name for " | |
4177 | "attribute specification statement at %C"); | |
524af0d6 | 4178 | return false; |
a8b3b0b6 CR |
4179 | } |
4180 | } | |
4181 | else | |
4182 | { | |
4183 | gfc_internal_error ("Missing symbol"); | |
4184 | } | |
4185 | } while (found_id == MATCH_YES); | |
4186 | ||
4187 | /* if we get here we were successful */ | |
524af0d6 | 4188 | return true; |
a8b3b0b6 CR |
4189 | } |
4190 | ||
4191 | ||
4192 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4193 | |
a8b3b0b6 CR |
4194 | match |
4195 | gfc_match_bind_c_stmt (void) | |
4196 | { | |
4197 | match found_match = MATCH_NO; | |
4198 | gfc_typespec *ts; | |
4199 | ||
4200 | ts = ¤t_ts; | |
f5acf0f2 | 4201 | |
a8b3b0b6 CR |
4202 | /* This may not be necessary. */ |
4203 | gfc_clear_ts (ts); | |
4204 | /* Clear the temporary binding label holder. */ | |
62603fae | 4205 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4206 | |
4207 | /* Look for the bind(c). */ | |
1eabf70a | 4208 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4209 | |
4210 | if (found_match == MATCH_YES) | |
4211 | { | |
878cdb7b TB |
4212 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4213 | return MATCH_ERROR; | |
4214 | ||
a8b3b0b6 CR |
4215 | /* Look for the :: now, but it is not required. */ |
4216 | gfc_match (" :: "); | |
4217 | ||
4218 | /* Get the identifier(s) that needs to be updated. This may need to | |
4219 | change to hand the flag(s) for the attr specified so all identifiers | |
4220 | found can have all appropriate parts updated (assuming that the same | |
4221 | spec stmt can have multiple attrs, such as both bind(c) and | |
4222 | allocatable...). */ | |
524af0d6 | 4223 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4224 | /* Error message should have printed already. */ |
4225 | return MATCH_ERROR; | |
4226 | } | |
4227 | ||
4228 | return found_match; | |
4229 | } | |
4230 | ||
4231 | ||
6de9cd9a DN |
4232 | /* Match a data declaration statement. */ |
4233 | ||
4234 | match | |
4235 | gfc_match_data_decl (void) | |
4236 | { | |
4237 | gfc_symbol *sym; | |
4238 | match m; | |
949d5b72 | 4239 | int elem; |
6de9cd9a | 4240 | |
a8b3b0b6 | 4241 | num_idents_on_line = 0; |
f5acf0f2 | 4242 | |
e74f1cc8 | 4243 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4244 | if (m != MATCH_YES) |
4245 | return m; | |
4246 | ||
2e23972e JW |
4247 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4248 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4249 | { |
bc21d315 | 4250 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4251 | |
4252 | if (sym == NULL) | |
4253 | { | |
4254 | m = MATCH_ERROR; | |
4255 | goto cleanup; | |
4256 | } | |
4257 | ||
bc21d315 | 4258 | current_ts.u.derived = sym; |
6de9cd9a DN |
4259 | } |
4260 | ||
4261 | m = match_attr_spec (); | |
4262 | if (m == MATCH_ERROR) | |
4263 | { | |
4264 | m = MATCH_NO; | |
4265 | goto cleanup; | |
4266 | } | |
4267 | ||
8b704316 PT |
4268 | if (current_ts.type == BT_CLASS |
4269 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4270 | goto ok; | |
4271 | ||
2e23972e JW |
4272 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4273 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4274 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4275 | { |
4276 | ||
4277 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4278 | goto ok; | |
4279 | ||
bc21d315 | 4280 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4281 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4282 | |
976e21f6 | 4283 | /* Any symbol that we find had better be a type definition |
636dff67 | 4284 | which has its components defined. */ |
976e21f6 | 4285 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4286 | && (current_ts.u.derived->components != NULL |
4287 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4288 | goto ok; |
4289 | ||
a1b80ec7 JW |
4290 | gfc_error ("Derived type at %C has not been previously defined " |
4291 | "and so cannot appear in a derived type definition"); | |
4292 | m = MATCH_ERROR; | |
4293 | goto cleanup; | |
6de9cd9a DN |
4294 | } |
4295 | ||
4296 | ok: | |
4297 | /* If we have an old-style character declaration, and no new-style | |
4298 | attribute specifications, then there a comma is optional between | |
4299 | the type specification and the variable list. */ | |
4300 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4301 | gfc_match_char (','); | |
4302 | ||
949d5b72 PT |
4303 | /* Give the types/attributes to symbols that follow. Give the element |
4304 | a number so that repeat character length expressions can be copied. */ | |
4305 | elem = 1; | |
6de9cd9a DN |
4306 | for (;;) |
4307 | { | |
a8b3b0b6 | 4308 | num_idents_on_line++; |
949d5b72 | 4309 | m = variable_decl (elem++); |
6de9cd9a DN |
4310 | if (m == MATCH_ERROR) |
4311 | goto cleanup; | |
4312 | if (m == MATCH_NO) | |
4313 | break; | |
4314 | ||
4315 | if (gfc_match_eos () == MATCH_YES) | |
4316 | goto cleanup; | |
4317 | if (gfc_match_char (',') != MATCH_YES) | |
4318 | break; | |
4319 | } | |
4320 | ||
8f81c3c6 PT |
4321 | if (gfc_error_flag_test () == 0) |
4322 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
4323 | m = MATCH_ERROR; |
4324 | ||
a9f6f1f2 JD |
4325 | gfc_free_data_all (gfc_current_ns); |
4326 | ||
6de9cd9a DN |
4327 | cleanup: |
4328 | gfc_free_array_spec (current_as); | |
4329 | current_as = NULL; | |
4330 | return m; | |
4331 | } | |
4332 | ||
4333 | ||
4334 | /* Match a prefix associated with a function or subroutine | |
4335 | declaration. If the typespec pointer is nonnull, then a typespec | |
4336 | can be matched. Note that if nothing matches, MATCH_YES is | |
4337 | returned (the null string was matched). */ | |
4338 | ||
1c8bcdf7 PT |
4339 | match |
4340 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4341 | { |
7389bce6 | 4342 | bool seen_type; |
e6c14898 DK |
4343 | bool seen_impure; |
4344 | bool found_prefix; | |
6de9cd9a DN |
4345 | |
4346 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4347 | seen_type = false; |
4348 | seen_impure = false; | |
6de9cd9a | 4349 | |
3df684e2 DK |
4350 | gcc_assert (!gfc_matching_prefix); |
4351 | gfc_matching_prefix = true; | |
f37e928c | 4352 | |
e6c14898 | 4353 | do |
6de9cd9a | 4354 | { |
e6c14898 | 4355 | found_prefix = false; |
6de9cd9a | 4356 | |
e6c14898 DK |
4357 | if (!seen_type && ts != NULL |
4358 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4359 | && gfc_match_space () == MATCH_YES) | |
4360 | { | |
6de9cd9a | 4361 | |
e6c14898 DK |
4362 | seen_type = true; |
4363 | found_prefix = true; | |
4364 | } | |
4365 | ||
4366 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4367 | { | |
524af0d6 | 4368 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4369 | goto error; |
4370 | ||
4371 | found_prefix = true; | |
4372 | } | |
4373 | ||
4374 | if (gfc_match ("pure% ") == MATCH_YES) | |
4375 | { | |
524af0d6 | 4376 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4377 | goto error; |
4378 | ||
4379 | found_prefix = true; | |
4380 | } | |
6de9cd9a | 4381 | |
e6c14898 DK |
4382 | if (gfc_match ("recursive% ") == MATCH_YES) |
4383 | { | |
524af0d6 | 4384 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4385 | goto error; |
4386 | ||
4387 | found_prefix = true; | |
4388 | } | |
4389 | ||
4390 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4391 | attribute but rather only prevents ELEMENTAL routines from being | |
4392 | automatically PURE. */ | |
4393 | if (gfc_match ("impure% ") == MATCH_YES) | |
4394 | { | |
524af0d6 | 4395 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
4396 | goto error; |
4397 | ||
4398 | seen_impure = true; | |
4399 | found_prefix = true; | |
4400 | } | |
6de9cd9a | 4401 | } |
e6c14898 | 4402 | while (found_prefix); |
6de9cd9a | 4403 | |
e6c14898 DK |
4404 | /* IMPURE and PURE must not both appear, of course. */ |
4405 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4406 | { |
e6c14898 DK |
4407 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4408 | goto error; | |
6de9cd9a DN |
4409 | } |
4410 | ||
e6c14898 DK |
4411 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4412 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4413 | { |
524af0d6 | 4414 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 4415 | goto error; |
6de9cd9a DN |
4416 | } |
4417 | ||
4418 | /* At this point, the next item is not a prefix. */ | |
3df684e2 DK |
4419 | gcc_assert (gfc_matching_prefix); |
4420 | gfc_matching_prefix = false; | |
6de9cd9a | 4421 | return MATCH_YES; |
f37e928c DK |
4422 | |
4423 | error: | |
3df684e2 DK |
4424 | gcc_assert (gfc_matching_prefix); |
4425 | gfc_matching_prefix = false; | |
f37e928c | 4426 | return MATCH_ERROR; |
6de9cd9a DN |
4427 | } |
4428 | ||
4429 | ||
1c8bcdf7 | 4430 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4431 | |
524af0d6 | 4432 | static bool |
636dff67 | 4433 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4434 | { |
524af0d6 JB |
4435 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4436 | return false; | |
6de9cd9a | 4437 | |
524af0d6 JB |
4438 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4439 | return false; | |
6de9cd9a | 4440 | |
524af0d6 JB |
4441 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4442 | return false; | |
6de9cd9a | 4443 | |
524af0d6 | 4444 | return true; |
6de9cd9a DN |
4445 | } |
4446 | ||
4447 | ||
4448 | /* Match a formal argument list. */ | |
4449 | ||
4450 | match | |
636dff67 | 4451 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4452 | { |
4453 | gfc_formal_arglist *head, *tail, *p, *q; | |
4454 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4455 | gfc_symbol *sym; | |
4456 | match m; | |
4457 | ||
4458 | head = tail = NULL; | |
4459 | ||
4460 | if (gfc_match_char ('(') != MATCH_YES) | |
4461 | { | |
4462 | if (null_flag) | |
4463 | goto ok; | |
4464 | return MATCH_NO; | |
4465 | } | |
4466 | ||
4467 | if (gfc_match_char (')') == MATCH_YES) | |
4468 | goto ok; | |
4469 | ||
4470 | for (;;) | |
4471 | { | |
4472 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
4473 | { |
4474 | sym = NULL; | |
524af0d6 JB |
4475 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4476 | "at %C")) | |
9362a03b JW |
4477 | { |
4478 | m = MATCH_ERROR; | |
4479 | goto cleanup; | |
4480 | } | |
4481 | } | |
6de9cd9a DN |
4482 | else |
4483 | { | |
4484 | m = gfc_match_name (name); | |
4485 | if (m != MATCH_YES) | |
4486 | goto cleanup; | |
4487 | ||
4488 | if (gfc_get_symbol (name, NULL, &sym)) | |
4489 | goto cleanup; | |
4490 | } | |
4491 | ||
4492 | p = gfc_get_formal_arglist (); | |
4493 | ||
4494 | if (head == NULL) | |
4495 | head = tail = p; | |
4496 | else | |
4497 | { | |
4498 | tail->next = p; | |
4499 | tail = p; | |
4500 | } | |
4501 | ||
4502 | tail->sym = sym; | |
4503 | ||
4504 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4505 | dummy procedure. We don't apply these attributes to formal |
4506 | arguments of statement functions. */ | |
6de9cd9a | 4507 | if (sym != NULL && !st_flag |
524af0d6 JB |
4508 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4509 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
4510 | { |
4511 | m = MATCH_ERROR; | |
4512 | goto cleanup; | |
4513 | } | |
4514 | ||
4515 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4516 | so check for it explicitly. After the statement is accepted, |
4517 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4518 | if (gfc_new_block != NULL && sym != NULL |
4519 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4520 | { | |
4521 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4522 | sym->name); | |
4523 | m = MATCH_ERROR; | |
4524 | goto cleanup; | |
4525 | } | |
4526 | ||
4527 | if (gfc_match_char (')') == MATCH_YES) | |
4528 | goto ok; | |
4529 | ||
4530 | m = gfc_match_char (','); | |
4531 | if (m != MATCH_YES) | |
4532 | { | |
4533 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4534 | goto cleanup; | |
4535 | } | |
4536 | } | |
4537 | ||
4538 | ok: | |
4539 | /* Check for duplicate symbols in the formal argument list. */ | |
4540 | if (head != NULL) | |
4541 | { | |
4542 | for (p = head; p->next; p = p->next) | |
4543 | { | |
4544 | if (p->sym == NULL) | |
4545 | continue; | |
4546 | ||
4547 | for (q = p->next; q; q = q->next) | |
4548 | if (p->sym == q->sym) | |
4549 | { | |
636dff67 SK |
4550 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4551 | "at %C", p->sym->name); | |
6de9cd9a DN |
4552 | |
4553 | m = MATCH_ERROR; | |
4554 | goto cleanup; | |
4555 | } | |
4556 | } | |
4557 | } | |
4558 | ||
524af0d6 | 4559 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
4560 | { |
4561 | m = MATCH_ERROR; | |
4562 | goto cleanup; | |
4563 | } | |
4564 | ||
4565 | return MATCH_YES; | |
4566 | ||
4567 | cleanup: | |
4568 | gfc_free_formal_arglist (head); | |
4569 | return m; | |
4570 | } | |
4571 | ||
4572 | ||
4573 | /* Match a RESULT specification following a function declaration or | |
4574 | ENTRY statement. Also matches the end-of-statement. */ | |
4575 | ||
4576 | static match | |
66e4ab31 | 4577 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4578 | { |
4579 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4580 | gfc_symbol *r; | |
4581 | match m; | |
4582 | ||
4583 | if (gfc_match (" result (") != MATCH_YES) | |
4584 | return MATCH_NO; | |
4585 | ||
4586 | m = gfc_match_name (name); | |
4587 | if (m != MATCH_YES) | |
4588 | return m; | |
4589 | ||
a8b3b0b6 CR |
4590 | /* Get the right paren, and that's it because there could be the |
4591 | bind(c) attribute after the result clause. */ | |
524af0d6 | 4592 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 4593 | { |
a8b3b0b6 | 4594 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4595 | return MATCH_ERROR; |
4596 | } | |
4597 | ||
4598 | if (strcmp (function->name, name) == 0) | |
4599 | { | |
636dff67 | 4600 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4601 | return MATCH_ERROR; |
4602 | } | |
4603 | ||
4604 | if (gfc_get_symbol (name, NULL, &r)) | |
4605 | return MATCH_ERROR; | |
4606 | ||
524af0d6 | 4607 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
4608 | return MATCH_ERROR; |
4609 | ||
4610 | *result = r; | |
4611 | ||
4612 | return MATCH_YES; | |
4613 | } | |
4614 | ||
4615 | ||
a8b3b0b6 CR |
4616 | /* Match a function suffix, which could be a combination of a result |
4617 | clause and BIND(C), either one, or neither. The draft does not | |
4618 | require them to come in a specific order. */ | |
4619 | ||
4620 | match | |
4621 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4622 | { | |
4623 | match is_bind_c; /* Found bind(c). */ | |
4624 | match is_result; /* Found result clause. */ | |
4625 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4626 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4627 | bool allow_binding_name; |
a8b3b0b6 CR |
4628 | |
4629 | /* Initialize to having found nothing. */ | |
4630 | found_match = MATCH_NO; | |
f5acf0f2 | 4631 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
4632 | is_result = MATCH_NO; |
4633 | ||
4634 | /* Get the next char to narrow between result and bind(c). */ | |
4635 | gfc_gobble_whitespace (); | |
8fc541d3 | 4636 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4637 | |
1eabf70a TB |
4638 | /* C binding names are not allowed for internal procedures. */ |
4639 | if (gfc_current_state () == COMP_CONTAINS | |
4640 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4641 | allow_binding_name = false; | |
4642 | else | |
4643 | allow_binding_name = true; | |
4644 | ||
a8b3b0b6 CR |
4645 | switch (peek_char) |
4646 | { | |
4647 | case 'r': | |
4648 | /* Look for result clause. */ | |
4649 | is_result = match_result (sym, result); | |
4650 | if (is_result == MATCH_YES) | |
4651 | { | |
4652 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4653 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4654 | /* We've found the result clause and possibly bind(c). */ |
4655 | found_match = MATCH_YES; | |
4656 | } | |
4657 | else | |
4658 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 4659 | found_match = is_result; |
a8b3b0b6 CR |
4660 | break; |
4661 | case 'b': | |
4662 | /* Look for bind(c) first. */ | |
1eabf70a | 4663 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4664 | if (is_bind_c == MATCH_YES) |
4665 | { | |
4666 | /* Now see if a result clause followed it. */ | |
4667 | is_result = match_result (sym, result); | |
4668 | found_match = MATCH_YES; | |
4669 | } | |
4670 | else | |
4671 | { | |
4672 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4673 | found_match = MATCH_ERROR; | |
4674 | } | |
4675 | break; | |
4676 | default: | |
4677 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4678 | found_match = MATCH_ERROR; | |
4679 | break; | |
4680 | } | |
4681 | ||
a8b3b0b6 | 4682 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4683 | { |
1eabf70a | 4684 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4685 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4686 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
4687 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4688 | "at %L may not be specified for an internal " | |
4689 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
4690 | return MATCH_ERROR; |
4691 | ||
524af0d6 | 4692 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
4693 | return MATCH_ERROR; |
4694 | } | |
f5acf0f2 | 4695 | |
a8b3b0b6 CR |
4696 | return found_match; |
4697 | } | |
4698 | ||
4699 | ||
3070bab4 JW |
4700 | /* Procedure pointer return value without RESULT statement: |
4701 | Add "hidden" result variable named "ppr@". */ | |
4702 | ||
524af0d6 | 4703 | static bool |
3070bab4 JW |
4704 | add_hidden_procptr_result (gfc_symbol *sym) |
4705 | { | |
4706 | bool case1,case2; | |
4707 | ||
4708 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 4709 | return false; |
3070bab4 JW |
4710 | |
4711 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4712 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4713 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4714 | && sym->attr.external; | |
4715 | /* Second usage case: INTERFACE statements. */ | |
4716 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4717 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4718 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4719 | ||
4720 | if (case1 || case2) | |
4721 | { | |
4722 | gfc_symtree *stree; | |
4723 | if (case1) | |
08a6b8e0 | 4724 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4725 | else if (case2) |
c73b6478 JW |
4726 | { |
4727 | gfc_symtree *st2; | |
08a6b8e0 | 4728 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4729 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4730 | st2->n.sym = stree->n.sym; | |
4731 | } | |
3070bab4 JW |
4732 | sym->result = stree->n.sym; |
4733 | ||
4734 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4735 | sym->result->attr.pointer = sym->attr.pointer; | |
4736 | sym->result->attr.external = sym->attr.external; | |
4737 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4738 | sym->result->ts = sym->ts; |
3070bab4 JW |
4739 | sym->attr.proc_pointer = 0; |
4740 | sym->attr.pointer = 0; | |
4741 | sym->attr.external = 0; | |
4742 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4743 | { | |
4744 | sym->result->attr.pointer = 0; | |
4745 | sym->result->attr.proc_pointer = 1; | |
4746 | } | |
4747 | ||
4748 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4749 | } | |
4750 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4751 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4752 | && sym->result && sym->result != sym && sym->result->attr.external | |
4753 | && sym == gfc_current_ns->proc_name | |
4754 | && sym == sym->result->ns->proc_name | |
4755 | && strcmp ("ppr@", sym->result->name) == 0) | |
4756 | { | |
4757 | sym->result->attr.proc_pointer = 1; | |
4758 | sym->attr.pointer = 0; | |
524af0d6 | 4759 | return true; |
3070bab4 JW |
4760 | } |
4761 | else | |
524af0d6 | 4762 | return false; |
3070bab4 JW |
4763 | } |
4764 | ||
4765 | ||
713485cc JW |
4766 | /* Match the interface for a PROCEDURE declaration, |
4767 | including brackets (R1212). */ | |
69773742 JW |
4768 | |
4769 | static match | |
713485cc | 4770 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
4771 | { |
4772 | match m; | |
3276e0b3 | 4773 | gfc_symtree *st; |
69773742 | 4774 | locus old_loc, entry_loc; |
3276e0b3 PT |
4775 | gfc_namespace *old_ns = gfc_current_ns; |
4776 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 4777 | |
3276e0b3 | 4778 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
4779 | gfc_clear_ts (¤t_ts); |
4780 | ||
4781 | if (gfc_match (" (") != MATCH_YES) | |
4782 | { | |
4783 | gfc_current_locus = entry_loc; | |
4784 | return MATCH_NO; | |
4785 | } | |
4786 | ||
4787 | /* Get the type spec. for the procedure interface. */ | |
4788 | old_loc = gfc_current_locus; | |
e74f1cc8 | 4789 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 4790 | gfc_gobble_whitespace (); |
8fc541d3 | 4791 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
4792 | goto got_ts; |
4793 | ||
4794 | if (m == MATCH_ERROR) | |
4795 | return m; | |
4796 | ||
3276e0b3 | 4797 | /* Procedure interface is itself a procedure. */ |
69773742 | 4798 | gfc_current_locus = old_loc; |
3276e0b3 | 4799 | m = gfc_match_name (name); |
69773742 | 4800 | |
3276e0b3 PT |
4801 | /* First look to see if it is already accessible in the current |
4802 | namespace because it is use associated or contained. */ | |
4803 | st = NULL; | |
4804 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4805 | return MATCH_ERROR; | |
4806 | ||
4807 | /* If it is still not found, then try the parent namespace, if it | |
4808 | exists and create the symbol there if it is still not found. */ | |
4809 | if (gfc_current_ns->parent) | |
4810 | gfc_current_ns = gfc_current_ns->parent; | |
4811 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4812 | return MATCH_ERROR; | |
4813 | ||
4814 | gfc_current_ns = old_ns; | |
4815 | *proc_if = st->n.sym; | |
69773742 | 4816 | |
713485cc | 4817 | if (*proc_if) |
69773742 | 4818 | { |
713485cc | 4819 | (*proc_if)->refs++; |
bb343a6c TB |
4820 | /* Resolve interface if possible. That way, attr.procedure is only set |
4821 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 4822 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
713485cc JW |
4823 | while ((*proc_if)->ts.interface) |
4824 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 4825 | |
0e8d854e JW |
4826 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
4827 | && (*proc_if)->ts.type == BT_UNKNOWN | |
524af0d6 JB |
4828 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
4829 | (*proc_if)->name, NULL)) | |
0e8d854e | 4830 | return MATCH_ERROR; |
69773742 JW |
4831 | } |
4832 | ||
4833 | got_ts: | |
69773742 JW |
4834 | if (gfc_match (" )") != MATCH_YES) |
4835 | { | |
4836 | gfc_current_locus = entry_loc; | |
4837 | return MATCH_NO; | |
4838 | } | |
4839 | ||
713485cc JW |
4840 | return MATCH_YES; |
4841 | } | |
4842 | ||
4843 | ||
4844 | /* Match a PROCEDURE declaration (R1211). */ | |
4845 | ||
4846 | static match | |
4847 | match_procedure_decl (void) | |
4848 | { | |
4849 | match m; | |
4850 | gfc_symbol *sym, *proc_if = NULL; | |
4851 | int num; | |
4852 | gfc_expr *initializer = NULL; | |
4853 | ||
4854 | /* Parse interface (with brackets). */ | |
4855 | m = match_procedure_interface (&proc_if); | |
4856 | if (m != MATCH_YES) | |
4857 | return m; | |
4858 | ||
4859 | /* Parse attributes (with colons). */ | |
69773742 JW |
4860 | m = match_attr_spec(); |
4861 | if (m == MATCH_ERROR) | |
4862 | return MATCH_ERROR; | |
4863 | ||
0859be17 TB |
4864 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
4865 | { | |
4866 | current_attr.is_bind_c = 1; | |
4867 | has_name_equals = 0; | |
4868 | curr_binding_label = NULL; | |
4869 | } | |
4870 | ||
69773742 JW |
4871 | /* Get procedure symbols. */ |
4872 | for(num=1;;num++) | |
4873 | { | |
69773742 JW |
4874 | m = gfc_match_symbol (&sym, 0); |
4875 | if (m == MATCH_NO) | |
4876 | goto syntax; | |
4877 | else if (m == MATCH_ERROR) | |
4878 | return m; | |
4879 | ||
4880 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 4881 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
4882 | return MATCH_ERROR; |
4883 | ||
4884 | if (sym->attr.is_bind_c) | |
4885 | { | |
4886 | /* Check for C1218. */ | |
4887 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4888 | { | |
4889 | gfc_error ("BIND(C) attribute at %C requires " | |
4890 | "an interface with BIND(C)"); | |
4891 | return MATCH_ERROR; | |
4892 | } | |
4893 | /* Check for C1217. */ | |
4894 | if (has_name_equals && sym->attr.pointer) | |
4895 | { | |
4896 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4897 | "POINTER attribute at %C"); | |
4898 | return MATCH_ERROR; | |
4899 | } | |
4900 | if (has_name_equals && sym->attr.dummy) | |
4901 | { | |
4902 | gfc_error ("Dummy procedure at %C may not have " | |
4903 | "BIND(C) attribute with NAME"); | |
4904 | return MATCH_ERROR; | |
4905 | } | |
4906 | /* Set binding label for BIND(C). */ | |
524af0d6 | 4907 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
4908 | return MATCH_ERROR; |
4909 | } | |
4910 | ||
524af0d6 | 4911 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 4912 | return MATCH_ERROR; |
3070bab4 | 4913 | |
524af0d6 | 4914 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
4915 | sym = sym->result; |
4916 | ||
524af0d6 | 4917 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
4918 | return MATCH_ERROR; |
4919 | ||
4920 | /* Set interface. */ | |
4921 | if (proc_if != NULL) | |
6cc309c9 | 4922 | { |
1d146030 JW |
4923 | if (sym->ts.type != BT_UNKNOWN) |
4924 | { | |
4925 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4926 | sym->name, &gfc_current_locus, | |
4927 | gfc_basic_typename (sym->ts.type)); | |
4928 | return MATCH_ERROR; | |
4929 | } | |
32d99e68 | 4930 | sym->ts.interface = proc_if; |
6cc309c9 | 4931 | sym->attr.untyped = 1; |
c73b6478 | 4932 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 4933 | } |
69773742 JW |
4934 | else if (current_ts.type != BT_UNKNOWN) |
4935 | { | |
524af0d6 | 4936 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 4937 | return MATCH_ERROR; |
32d99e68 JW |
4938 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4939 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 4940 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 4941 | sym->ts.interface->attr.function = 1; |
d91909c0 | 4942 | sym->attr.function = 1; |
c73b6478 | 4943 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
4944 | } |
4945 | ||
8fb74da4 JW |
4946 | if (gfc_match (" =>") == MATCH_YES) |
4947 | { | |
4948 | if (!current_attr.pointer) | |
4949 | { | |
4950 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4951 | m = MATCH_ERROR; | |
4952 | goto cleanup; | |
4953 | } | |
4954 | ||
80f95228 | 4955 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
4956 | if (m != MATCH_YES) |
4957 | goto cleanup; | |
4958 | ||
524af0d6 | 4959 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
4960 | goto cleanup; |
4961 | ||
4962 | } | |
4963 | ||
69773742 JW |
4964 | if (gfc_match_eos () == MATCH_YES) |
4965 | return MATCH_YES; | |
4966 | if (gfc_match_char (',') != MATCH_YES) | |
4967 | goto syntax; | |
4968 | } | |
4969 | ||
4970 | syntax: | |
4971 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4972 | return MATCH_ERROR; | |
8fb74da4 JW |
4973 | |
4974 | cleanup: | |
4975 | /* Free stuff up and return. */ | |
4976 | gfc_free_expr (initializer); | |
4977 | return m; | |
69773742 JW |
4978 | } |
4979 | ||
4980 | ||
713485cc JW |
4981 | static match |
4982 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4983 | ||
4984 | ||
4985 | /* Match a procedure pointer component declaration (R445). */ | |
4986 | ||
4987 | static match | |
4988 | match_ppc_decl (void) | |
4989 | { | |
4990 | match m; | |
4991 | gfc_symbol *proc_if = NULL; | |
4992 | gfc_typespec ts; | |
4993 | int num; | |
4994 | gfc_component *c; | |
4995 | gfc_expr *initializer = NULL; | |
4996 | gfc_typebound_proc* tb; | |
4997 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4998 | ||
4999 | /* Parse interface (with brackets). */ | |
5000 | m = match_procedure_interface (&proc_if); | |
5001 | if (m != MATCH_YES) | |
5002 | goto syntax; | |
5003 | ||
5004 | /* Parse attributes. */ | |
5005 | tb = XCNEW (gfc_typebound_proc); | |
5006 | tb->where = gfc_current_locus; | |
5007 | m = match_binding_attributes (tb, false, true); | |
5008 | if (m == MATCH_ERROR) | |
5009 | return m; | |
5010 | ||
713485cc JW |
5011 | gfc_clear_attr (¤t_attr); |
5012 | current_attr.procedure = 1; | |
5013 | current_attr.proc_pointer = 1; | |
5014 | current_attr.access = tb->access; | |
5015 | current_attr.flavor = FL_PROCEDURE; | |
5016 | ||
5017 | /* Match the colons (required). */ | |
5018 | if (gfc_match (" ::") != MATCH_YES) | |
5019 | { | |
5020 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
5021 | return MATCH_ERROR; | |
5022 | } | |
5023 | ||
5024 | /* Check for C450. */ | |
5025 | if (!tb->nopass && proc_if == NULL) | |
5026 | { | |
5027 | gfc_error("NOPASS or explicit interface required at %C"); | |
5028 | return MATCH_ERROR; | |
5029 | } | |
5030 | ||
524af0d6 | 5031 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5032 | return MATCH_ERROR; |
5033 | ||
713485cc JW |
5034 | /* Match PPC names. */ |
5035 | ts = current_ts; | |
5036 | for(num=1;;num++) | |
5037 | { | |
5038 | m = gfc_match_name (name); | |
5039 | if (m == MATCH_NO) | |
5040 | goto syntax; | |
5041 | else if (m == MATCH_ERROR) | |
5042 | return m; | |
5043 | ||
524af0d6 | 5044 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5045 | return MATCH_ERROR; |
5046 | ||
5047 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5048 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5049 | return MATCH_ERROR; |
5050 | ||
524af0d6 | 5051 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5052 | return MATCH_ERROR; |
5053 | ||
524af0d6 | 5054 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5055 | return MATCH_ERROR; |
5056 | ||
2be03814 TB |
5057 | if (num == 1) |
5058 | c->tb = tb; | |
5059 | else | |
5060 | { | |
5061 | c->tb = XCNEW (gfc_typebound_proc); | |
5062 | c->tb->where = gfc_current_locus; | |
5063 | *c->tb = *tb; | |
5064 | } | |
90661f26 | 5065 | |
713485cc JW |
5066 | /* Set interface. */ |
5067 | if (proc_if != NULL) | |
5068 | { | |
5069 | c->ts.interface = proc_if; | |
5070 | c->attr.untyped = 1; | |
5071 | c->attr.if_source = IFSRC_IFBODY; | |
5072 | } | |
5073 | else if (ts.type != BT_UNKNOWN) | |
5074 | { | |
5075 | c->ts = ts; | |
5076 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5077 | c->ts.interface->result = c->ts.interface; |
713485cc | 5078 | c->ts.interface->ts = ts; |
d91909c0 | 5079 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5080 | c->ts.interface->attr.function = 1; |
d91909c0 | 5081 | c->attr.function = 1; |
713485cc JW |
5082 | c->attr.if_source = IFSRC_UNKNOWN; |
5083 | } | |
5084 | ||
5085 | if (gfc_match (" =>") == MATCH_YES) | |
5086 | { | |
80f95228 | 5087 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5088 | if (m != MATCH_YES) |
5089 | { | |
5090 | gfc_free_expr (initializer); | |
5091 | return m; | |
5092 | } | |
5093 | c->initializer = initializer; | |
5094 | } | |
5095 | ||
5096 | if (gfc_match_eos () == MATCH_YES) | |
5097 | return MATCH_YES; | |
5098 | if (gfc_match_char (',') != MATCH_YES) | |
5099 | goto syntax; | |
5100 | } | |
5101 | ||
5102 | syntax: | |
5103 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5104 | return MATCH_ERROR; | |
5105 | } | |
5106 | ||
5107 | ||
69773742 JW |
5108 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5109 | ||
5110 | static match | |
5111 | match_procedure_in_interface (void) | |
5112 | { | |
5113 | match m; | |
5114 | gfc_symbol *sym; | |
5115 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5116 | locus old_locus; |
69773742 JW |
5117 | |
5118 | if (current_interface.type == INTERFACE_NAMELESS | |
5119 | || current_interface.type == INTERFACE_ABSTRACT) | |
5120 | { | |
5121 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5122 | return MATCH_ERROR; | |
5123 | } | |
5124 | ||
a6fcd41a TB |
5125 | /* Check if the F2008 optional double colon appears. */ |
5126 | gfc_gobble_whitespace (); | |
5127 | old_locus = gfc_current_locus; | |
5128 | if (gfc_match ("::") == MATCH_YES) | |
5129 | { | |
524af0d6 JB |
5130 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5131 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5132 | return MATCH_ERROR; |
5133 | } | |
5134 | else | |
5135 | gfc_current_locus = old_locus; | |
5136 | ||
69773742 JW |
5137 | for(;;) |
5138 | { | |
5139 | m = gfc_match_name (name); | |
5140 | if (m == MATCH_NO) | |
5141 | goto syntax; | |
5142 | else if (m == MATCH_ERROR) | |
5143 | return m; | |
5144 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5145 | return MATCH_ERROR; | |
5146 | ||
524af0d6 | 5147 | if (!gfc_add_interface (sym)) |
69773742 JW |
5148 | return MATCH_ERROR; |
5149 | ||
69773742 JW |
5150 | if (gfc_match_eos () == MATCH_YES) |
5151 | break; | |
5152 | if (gfc_match_char (',') != MATCH_YES) | |
5153 | goto syntax; | |
5154 | } | |
5155 | ||
5156 | return MATCH_YES; | |
5157 | ||
5158 | syntax: | |
5159 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5160 | return MATCH_ERROR; | |
5161 | } | |
5162 | ||
5163 | ||
5164 | /* General matcher for PROCEDURE declarations. */ | |
5165 | ||
30b608eb DK |
5166 | static match match_procedure_in_type (void); |
5167 | ||
69773742 JW |
5168 | match |
5169 | gfc_match_procedure (void) | |
5170 | { | |
5171 | match m; | |
5172 | ||
5173 | switch (gfc_current_state ()) | |
5174 | { | |
5175 | case COMP_NONE: | |
5176 | case COMP_PROGRAM: | |
5177 | case COMP_MODULE: | |
5178 | case COMP_SUBROUTINE: | |
5179 | case COMP_FUNCTION: | |
3547d57e | 5180 | case COMP_BLOCK: |
69773742 JW |
5181 | m = match_procedure_decl (); |
5182 | break; | |
5183 | case COMP_INTERFACE: | |
5184 | m = match_procedure_in_interface (); | |
5185 | break; | |
5186 | case COMP_DERIVED: | |
713485cc JW |
5187 | m = match_ppc_decl (); |
5188 | break; | |
30b608eb DK |
5189 | case COMP_DERIVED_CONTAINS: |
5190 | m = match_procedure_in_type (); | |
5191 | break; | |
69773742 JW |
5192 | default: |
5193 | return MATCH_NO; | |
5194 | } | |
5195 | ||
5196 | if (m != MATCH_YES) | |
5197 | return m; | |
5198 | ||
524af0d6 | 5199 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5200 | return MATCH_ERROR; |
5201 | ||
5202 | return m; | |
5203 | } | |
5204 | ||
5205 | ||
c3005b0f DK |
5206 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5207 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5208 | parser-state-stack to find out whether we're in a module. */ | |
5209 | ||
5210 | static void | |
5211 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5212 | { | |
5213 | bool in_module; | |
5214 | ||
5215 | in_module = (gfc_state_stack->previous | |
5216 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5217 | ||
5218 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5219 | } | |
5220 | ||
5221 | ||
6de9cd9a DN |
5222 | /* Match a function declaration. */ |
5223 | ||
5224 | match | |
5225 | gfc_match_function_decl (void) | |
5226 | { | |
5227 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5228 | gfc_symbol *sym, *result; | |
5229 | locus old_loc; | |
5230 | match m; | |
a8b3b0b6 | 5231 | match suffix_match; |
f5acf0f2 | 5232 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5233 | |
5234 | if (gfc_current_state () != COMP_NONE | |
5235 | && gfc_current_state () != COMP_INTERFACE | |
5236 | && gfc_current_state () != COMP_CONTAINS) | |
5237 | return MATCH_NO; | |
5238 | ||
5239 | gfc_clear_ts (¤t_ts); | |
5240 | ||
63645982 | 5241 | old_loc = gfc_current_locus; |
6de9cd9a | 5242 | |
1c8bcdf7 | 5243 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5244 | if (m != MATCH_YES) |
5245 | { | |
63645982 | 5246 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5247 | return m; |
5248 | } | |
5249 | ||
5250 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5251 | { | |
63645982 | 5252 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5253 | return MATCH_NO; |
5254 | } | |
1a492601 | 5255 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5256 | return MATCH_ERROR; |
3070bab4 | 5257 | |
524af0d6 | 5258 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5259 | sym = sym->result; |
5260 | ||
6de9cd9a DN |
5261 | gfc_new_block = sym; |
5262 | ||
5263 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5264 | if (m == MATCH_NO) | |
2b9a33ae TS |
5265 | { |
5266 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5267 | "definition at %C"); |
2b9a33ae TS |
5268 | m = MATCH_ERROR; |
5269 | goto cleanup; | |
5270 | } | |
6de9cd9a DN |
5271 | else if (m == MATCH_ERROR) |
5272 | goto cleanup; | |
5273 | ||
5274 | result = NULL; | |
5275 | ||
a8b3b0b6 CR |
5276 | /* According to the draft, the bind(c) and result clause can |
5277 | come in either order after the formal_arg_list (i.e., either | |
5278 | can be first, both can exist together or by themselves or neither | |
5279 | one). Therefore, the match_result can't match the end of the | |
5280 | string, and check for the bind(c) or result clause in either order. */ | |
5281 | found_match = gfc_match_eos (); | |
5282 | ||
5283 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5284 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5285 | not allowed for procedures. */ | |
5286 | if (sym->attr.is_bind_c == 1) | |
5287 | { | |
5288 | sym->attr.is_bind_c = 0; | |
5289 | if (sym->old_symbol != NULL) | |
5290 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5291 | "variables or common blocks", | |
5292 | &(sym->old_symbol->declared_at)); | |
5293 | else | |
5294 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5295 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5296 | } |
5297 | ||
a8b3b0b6 | 5298 | if (found_match != MATCH_YES) |
6de9cd9a | 5299 | { |
a8b3b0b6 CR |
5300 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5301 | suffix_match = gfc_match_suffix (sym, &result); | |
5302 | if (suffix_match == MATCH_YES) | |
5303 | /* Need to get the eos now. */ | |
5304 | found_match = gfc_match_eos (); | |
5305 | else | |
5306 | found_match = suffix_match; | |
6de9cd9a DN |
5307 | } |
5308 | ||
a8b3b0b6 CR |
5309 | if(found_match != MATCH_YES) |
5310 | m = MATCH_ERROR; | |
6de9cd9a DN |
5311 | else |
5312 | { | |
a8b3b0b6 CR |
5313 | /* Make changes to the symbol. */ |
5314 | m = MATCH_ERROR; | |
f5acf0f2 | 5315 | |
524af0d6 | 5316 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 5317 | goto cleanup; |
f5acf0f2 | 5318 | |
524af0d6 JB |
5319 | if (!gfc_missing_attr (&sym->attr, NULL) |
5320 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
a8b3b0b6 | 5321 | goto cleanup; |
6de9cd9a | 5322 | |
a99d95a2 | 5323 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5324 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5325 | sym->declared_at = old_loc; |
5326 | if (current_ts.type != BT_UNKNOWN) | |
5327 | current_ts.kind = -1; | |
5328 | else | |
5329 | current_ts.kind = 0; | |
1c8bcdf7 | 5330 | |
a8b3b0b6 CR |
5331 | if (result == NULL) |
5332 | { | |
6de7294f | 5333 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5334 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5335 | goto cleanup; |
a8b3b0b6 CR |
5336 | sym->result = sym; |
5337 | } | |
5338 | else | |
5339 | { | |
6de7294f | 5340 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5341 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5342 | goto cleanup; |
a8b3b0b6 CR |
5343 | sym->result = result; |
5344 | } | |
5345 | ||
c3005b0f DK |
5346 | /* Warn if this procedure has the same name as an intrinsic. */ |
5347 | warn_intrinsic_shadow (sym, true); | |
5348 | ||
a8b3b0b6 CR |
5349 | return MATCH_YES; |
5350 | } | |
6de9cd9a DN |
5351 | |
5352 | cleanup: | |
63645982 | 5353 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5354 | return m; |
5355 | } | |
5356 | ||
636dff67 SK |
5357 | |
5358 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5359 | pass the name of the entry, rather than the gfc_current_block name, and | |
5360 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5361 | |
5362 | static bool | |
3a43b5b3 TB |
5363 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5364 | locus *where) | |
68ea355b PT |
5365 | { |
5366 | gfc_gsymbol *s; | |
32e8bb8e | 5367 | enum gfc_symbol_type type; |
68ea355b | 5368 | |
7389bce6 | 5369 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 5370 | |
f11de7c5 TB |
5371 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5372 | name is a global identifier. */ | |
5373 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 5374 | { |
f11de7c5 TB |
5375 | s = gfc_get_gsymbol (name); |
5376 | ||
5377 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5378 | { | |
3a43b5b3 | 5379 | gfc_global_used (s, where); |
f11de7c5 TB |
5380 | return false; |
5381 | } | |
5382 | else | |
5383 | { | |
5384 | s->type = type; | |
77f8682b | 5385 | s->sym_name = name; |
3a43b5b3 | 5386 | s->where = *where; |
f11de7c5 TB |
5387 | s->defined = 1; |
5388 | s->ns = gfc_current_ns; | |
5389 | } | |
68ea355b | 5390 | } |
f11de7c5 TB |
5391 | |
5392 | /* Don't add the symbol multiple times. */ | |
5393 | if (binding_label | |
5394 | && (!gfc_notification_std (GFC_STD_F2008) | |
5395 | || strcmp (name, binding_label) != 0)) | |
5396 | { | |
5397 | s = gfc_get_gsymbol (binding_label); | |
5398 | ||
5399 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5400 | { | |
3a43b5b3 | 5401 | gfc_global_used (s, where); |
f11de7c5 TB |
5402 | return false; |
5403 | } | |
5404 | else | |
5405 | { | |
5406 | s->type = type; | |
77f8682b | 5407 | s->sym_name = name; |
f11de7c5 | 5408 | s->binding_label = binding_label; |
3a43b5b3 | 5409 | s->where = *where; |
f11de7c5 TB |
5410 | s->defined = 1; |
5411 | s->ns = gfc_current_ns; | |
5412 | } | |
5413 | } | |
5414 | ||
5415 | return true; | |
68ea355b | 5416 | } |
6de9cd9a | 5417 | |
636dff67 | 5418 | |
6de9cd9a DN |
5419 | /* Match an ENTRY statement. */ |
5420 | ||
5421 | match | |
5422 | gfc_match_entry (void) | |
5423 | { | |
3d79abbd PB |
5424 | gfc_symbol *proc; |
5425 | gfc_symbol *result; | |
5426 | gfc_symbol *entry; | |
6de9cd9a DN |
5427 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5428 | gfc_compile_state state; | |
5429 | match m; | |
3d79abbd | 5430 | gfc_entry_list *el; |
c96cfa49 | 5431 | locus old_loc; |
1a492601 | 5432 | bool module_procedure; |
bc3e7a8c TB |
5433 | char peek_char; |
5434 | match is_bind_c; | |
6de9cd9a DN |
5435 | |
5436 | m = gfc_match_name (name); | |
5437 | if (m != MATCH_YES) | |
5438 | return m; | |
5439 | ||
524af0d6 | 5440 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
5441 | return MATCH_ERROR; |
5442 | ||
3d79abbd | 5443 | state = gfc_current_state (); |
4c93c95a | 5444 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5445 | { |
4c93c95a FXC |
5446 | switch (state) |
5447 | { | |
5448 | case COMP_PROGRAM: | |
5449 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5450 | break; | |
5451 | case COMP_MODULE: | |
5452 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5453 | break; | |
5454 | case COMP_BLOCK_DATA: | |
636dff67 SK |
5455 | gfc_error ("ENTRY statement at %C cannot appear within " |
5456 | "a BLOCK DATA"); | |
4c93c95a FXC |
5457 | break; |
5458 | case COMP_INTERFACE: | |
636dff67 SK |
5459 | gfc_error ("ENTRY statement at %C cannot appear within " |
5460 | "an INTERFACE"); | |
4c93c95a FXC |
5461 | break; |
5462 | case COMP_DERIVED: | |
636dff67 SK |
5463 | gfc_error ("ENTRY statement at %C cannot appear within " |
5464 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5465 | break; |
5466 | case COMP_IF: | |
636dff67 SK |
5467 | gfc_error ("ENTRY statement at %C cannot appear within " |
5468 | "an IF-THEN block"); | |
4c93c95a FXC |
5469 | break; |
5470 | case COMP_DO: | |
8c6a85e3 | 5471 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5472 | gfc_error ("ENTRY statement at %C cannot appear within " |
5473 | "a DO block"); | |
4c93c95a FXC |
5474 | break; |
5475 | case COMP_SELECT: | |
636dff67 SK |
5476 | gfc_error ("ENTRY statement at %C cannot appear within " |
5477 | "a SELECT block"); | |
4c93c95a FXC |
5478 | break; |
5479 | case COMP_FORALL: | |
636dff67 SK |
5480 | gfc_error ("ENTRY statement at %C cannot appear within " |
5481 | "a FORALL block"); | |
4c93c95a FXC |
5482 | break; |
5483 | case COMP_WHERE: | |
636dff67 SK |
5484 | gfc_error ("ENTRY statement at %C cannot appear within " |
5485 | "a WHERE block"); | |
4c93c95a FXC |
5486 | break; |
5487 | case COMP_CONTAINS: | |
636dff67 SK |
5488 | gfc_error ("ENTRY statement at %C cannot appear within " |
5489 | "a contained subprogram"); | |
4c93c95a FXC |
5490 | break; |
5491 | default: | |
5492 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5493 | } | |
3d79abbd PB |
5494 | return MATCH_ERROR; |
5495 | } | |
5496 | ||
1a492601 | 5497 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5498 | && gfc_current_ns->parent->proc_name |
5499 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5500 | == FL_MODULE; | |
1a492601 | 5501 | |
3d79abbd PB |
5502 | if (gfc_current_ns->parent != NULL |
5503 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5504 | && !module_procedure) |
3d79abbd PB |
5505 | { |
5506 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5507 | "contained procedure"); | |
5508 | return MATCH_ERROR; | |
5509 | } | |
5510 | ||
1a492601 PT |
5511 | /* Module function entries need special care in get_proc_name |
5512 | because previous references within the function will have | |
5513 | created symbols attached to the current namespace. */ | |
5514 | if (get_proc_name (name, &entry, | |
5515 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5516 | && module_procedure)) |
6de9cd9a DN |
5517 | return MATCH_ERROR; |
5518 | ||
3d79abbd PB |
5519 | proc = gfc_current_block (); |
5520 | ||
bc3e7a8c TB |
5521 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5522 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5523 | not allowed for procedures. */ | |
5524 | if (entry->attr.is_bind_c == 1) | |
5525 | { | |
5526 | entry->attr.is_bind_c = 0; | |
5527 | if (entry->old_symbol != NULL) | |
5528 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5529 | "variables or common blocks", | |
5530 | &(entry->old_symbol->declared_at)); | |
5531 | else | |
5532 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5533 | "variables or common blocks", &gfc_current_locus); | |
5534 | } | |
f5acf0f2 | 5535 | |
bc3e7a8c TB |
5536 | /* Check what next non-whitespace character is so we can tell if there |
5537 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 5538 | old_loc = gfc_current_locus; |
bc3e7a8c | 5539 | gfc_gobble_whitespace (); |
8fc541d3 | 5540 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5541 | |
3d79abbd | 5542 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5543 | { |
6de9cd9a DN |
5544 | m = gfc_match_formal_arglist (entry, 0, 1); |
5545 | if (m != MATCH_YES) | |
5546 | return MATCH_ERROR; | |
5547 | ||
1eabf70a TB |
5548 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5549 | never be an internal procedure. */ | |
5550 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5551 | if (is_bind_c == MATCH_ERROR) |
5552 | return MATCH_ERROR; | |
5553 | if (is_bind_c == MATCH_YES) | |
5554 | { | |
5555 | if (peek_char != '(') | |
5556 | { | |
5557 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5558 | return MATCH_ERROR; | |
5559 | } | |
524af0d6 JB |
5560 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5561 | &(entry->declared_at), 1)) | |
bc3e7a8c TB |
5562 | return MATCH_ERROR; |
5563 | } | |
5564 | ||
f11de7c5 | 5565 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
5566 | && !add_global_entry (name, entry->binding_label, true, |
5567 | &old_loc)) | |
f11de7c5 TB |
5568 | return MATCH_ERROR; |
5569 | ||
5570 | /* An entry in a subroutine. */ | |
524af0d6 JB |
5571 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5572 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 5573 | return MATCH_ERROR; |
3d79abbd PB |
5574 | } |
5575 | else | |
5576 | { | |
c96cfa49 | 5577 | /* An entry in a function. |
636dff67 SK |
5578 | We need to take special care because writing |
5579 | ENTRY f() | |
5580 | as | |
5581 | ENTRY f | |
5582 | is allowed, whereas | |
5583 | ENTRY f() RESULT (r) | |
5584 | can't be written as | |
5585 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
5586 | if (gfc_match_eos () == MATCH_YES) |
5587 | { | |
5588 | gfc_current_locus = old_loc; | |
5589 | /* Match the empty argument list, and add the interface to | |
5590 | the symbol. */ | |
5591 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5592 | } | |
5593 | else | |
5594 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5595 | ||
6de9cd9a DN |
5596 | if (m != MATCH_YES) |
5597 | return MATCH_ERROR; | |
5598 | ||
6de9cd9a DN |
5599 | result = NULL; |
5600 | ||
5601 | if (gfc_match_eos () == MATCH_YES) | |
5602 | { | |
524af0d6 JB |
5603 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5604 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
5605 | return MATCH_ERROR; |
5606 | ||
d198b59a | 5607 | entry->result = entry; |
6de9cd9a DN |
5608 | } |
5609 | else | |
5610 | { | |
bc3e7a8c | 5611 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5612 | if (m == MATCH_NO) |
5613 | gfc_syntax_error (ST_ENTRY); | |
5614 | if (m != MATCH_YES) | |
5615 | return MATCH_ERROR; | |
5616 | ||
bc3e7a8c TB |
5617 | if (result) |
5618 | { | |
524af0d6 JB |
5619 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5620 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5621 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
5622 | return MATCH_ERROR; |
5623 | entry->result = result; | |
5624 | } | |
5625 | else | |
5626 | { | |
524af0d6 JB |
5627 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5628 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
5629 | return MATCH_ERROR; |
5630 | entry->result = entry; | |
5631 | } | |
6de9cd9a | 5632 | } |
f11de7c5 TB |
5633 | |
5634 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
5635 | && !add_global_entry (name, entry->binding_label, false, |
5636 | &old_loc)) | |
f11de7c5 | 5637 | return MATCH_ERROR; |
6de9cd9a DN |
5638 | } |
5639 | ||
5640 | if (gfc_match_eos () != MATCH_YES) | |
5641 | { | |
5642 | gfc_syntax_error (ST_ENTRY); | |
5643 | return MATCH_ERROR; | |
5644 | } | |
5645 | ||
3d79abbd PB |
5646 | entry->attr.recursive = proc->attr.recursive; |
5647 | entry->attr.elemental = proc->attr.elemental; | |
5648 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5649 | |
3d79abbd PB |
5650 | el = gfc_get_entry_list (); |
5651 | el->sym = entry; | |
5652 | el->next = gfc_current_ns->entries; | |
5653 | gfc_current_ns->entries = el; | |
5654 | if (el->next) | |
5655 | el->id = el->next->id + 1; | |
5656 | else | |
5657 | el->id = 1; | |
6de9cd9a | 5658 | |
3d79abbd PB |
5659 | new_st.op = EXEC_ENTRY; |
5660 | new_st.ext.entry = el; | |
5661 | ||
5662 | return MATCH_YES; | |
6de9cd9a DN |
5663 | } |
5664 | ||
5665 | ||
5666 | /* Match a subroutine statement, including optional prefixes. */ | |
5667 | ||
5668 | match | |
5669 | gfc_match_subroutine (void) | |
5670 | { | |
5671 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5672 | gfc_symbol *sym; | |
5673 | match m; | |
a8b3b0b6 CR |
5674 | match is_bind_c; |
5675 | char peek_char; | |
1eabf70a | 5676 | bool allow_binding_name; |
6de9cd9a DN |
5677 | |
5678 | if (gfc_current_state () != COMP_NONE | |
5679 | && gfc_current_state () != COMP_INTERFACE | |
5680 | && gfc_current_state () != COMP_CONTAINS) | |
5681 | return MATCH_NO; | |
5682 | ||
1c8bcdf7 | 5683 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5684 | if (m != MATCH_YES) |
5685 | return m; | |
5686 | ||
5687 | m = gfc_match ("subroutine% %n", name); | |
5688 | if (m != MATCH_YES) | |
5689 | return m; | |
5690 | ||
1a492601 | 5691 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5692 | return MATCH_ERROR; |
3070bab4 | 5693 | |
7fcd5ad5 TB |
5694 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5695 | the symbol existed before. */ | |
5696 | sym->declared_at = gfc_current_locus; | |
5697 | ||
524af0d6 | 5698 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5699 | sym = sym->result; |
5700 | ||
6de9cd9a DN |
5701 | gfc_new_block = sym; |
5702 | ||
a8b3b0b6 | 5703 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5704 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5705 | gfc_gobble_whitespace (); |
8fc541d3 | 5706 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 5707 | |
524af0d6 | 5708 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
5709 | return MATCH_ERROR; |
5710 | ||
5711 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5712 | return MATCH_ERROR; | |
5713 | ||
a8b3b0b6 CR |
5714 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5715 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5716 | not allowed for procedures. */ | |
5717 | if (sym->attr.is_bind_c == 1) | |
5718 | { | |
5719 | sym->attr.is_bind_c = 0; | |
5720 | if (sym->old_symbol != NULL) | |
5721 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5722 | "variables or common blocks", | |
5723 | &(sym->old_symbol->declared_at)); | |
5724 | else | |
5725 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5726 | "variables or common blocks", &gfc_current_locus); | |
5727 | } | |
1eabf70a TB |
5728 | |
5729 | /* C binding names are not allowed for internal procedures. */ | |
5730 | if (gfc_current_state () == COMP_CONTAINS | |
5731 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5732 | allow_binding_name = false; | |
5733 | else | |
5734 | allow_binding_name = true; | |
5735 | ||
a8b3b0b6 CR |
5736 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5737 | so, then we need to make sure it's all correct. If it doesn't, | |
5738 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5739 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5740 | if (is_bind_c == MATCH_ERROR) |
5741 | { | |
5742 | /* There was an attempt at the bind(c), but it was wrong. An | |
5743 | error message should have been printed w/in the gfc_match_bind_c | |
5744 | so here we'll just return the MATCH_ERROR. */ | |
5745 | return MATCH_ERROR; | |
5746 | } | |
5747 | ||
5748 | if (is_bind_c == MATCH_YES) | |
5749 | { | |
1eabf70a | 5750 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 5751 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5752 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
5753 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
5754 | "at %L may not be specified for an internal " | |
5755 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
5756 | return MATCH_ERROR; |
5757 | ||
a8b3b0b6 CR |
5758 | if (peek_char != '(') |
5759 | { | |
5760 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5761 | return MATCH_ERROR; | |
5762 | } | |
524af0d6 JB |
5763 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
5764 | &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
5765 | return MATCH_ERROR; |
5766 | } | |
f5acf0f2 | 5767 | |
6de9cd9a DN |
5768 | if (gfc_match_eos () != MATCH_YES) |
5769 | { | |
5770 | gfc_syntax_error (ST_SUBROUTINE); | |
5771 | return MATCH_ERROR; | |
5772 | } | |
5773 | ||
524af0d6 | 5774 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6de9cd9a DN |
5775 | return MATCH_ERROR; |
5776 | ||
c3005b0f DK |
5777 | /* Warn if it has the same name as an intrinsic. */ |
5778 | warn_intrinsic_shadow (sym, false); | |
5779 | ||
6de9cd9a DN |
5780 | return MATCH_YES; |
5781 | } | |
5782 | ||
5783 | ||
a8b3b0b6 CR |
5784 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5785 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 5786 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
5787 | encounter the BIND(C) before the declaration itself. Return |
5788 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5789 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5790 | or MATCH_YES if the specifier was correct and the binding label and | |
5791 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
5792 | current_ts. If allow_binding_name is false, no binding name may be |
5793 | given. */ | |
a8b3b0b6 CR |
5794 | |
5795 | match | |
1eabf70a | 5796 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 5797 | { |
f5acf0f2 | 5798 | /* binding label, if exists */ |
9975a30b | 5799 | const char* binding_label = NULL; |
a8b3b0b6 CR |
5800 | match double_quote; |
5801 | match single_quote; | |
a8b3b0b6 | 5802 | |
f5acf0f2 | 5803 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
5804 | specifier or not. */ |
5805 | has_name_equals = 0; | |
5806 | ||
a8b3b0b6 CR |
5807 | /* This much we have to be able to match, in this order, if |
5808 | there is a bind(c) label. */ | |
5809 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5810 | return MATCH_NO; | |
5811 | ||
5812 | /* Now see if there is a binding label, or if we've reached the | |
5813 | end of the bind(c) attribute without one. */ | |
5814 | if (gfc_match_char (',') == MATCH_YES) | |
5815 | { | |
5816 | if (gfc_match (" name = ") != MATCH_YES) | |
5817 | { | |
5818 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5819 | "at %C"); | |
5820 | /* should give an error message here */ | |
5821 | return MATCH_ERROR; | |
5822 | } | |
5823 | ||
5824 | has_name_equals = 1; | |
5825 | ||
5826 | /* Get the opening quote. */ | |
5827 | double_quote = MATCH_YES; | |
5828 | single_quote = MATCH_YES; | |
5829 | double_quote = gfc_match_char ('"'); | |
5830 | if (double_quote != MATCH_YES) | |
5831 | single_quote = gfc_match_char ('\''); | |
5832 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5833 | { | |
5834 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5835 | "at %C"); | |
5836 | return MATCH_ERROR; | |
5837 | } | |
f5acf0f2 | 5838 | |
a8b3b0b6 CR |
5839 | /* Grab the binding label, using functions that will not lower |
5840 | case the names automatically. */ | |
62603fae | 5841 | if (gfc_match_name_C (&binding_label) != MATCH_YES) |
a8b3b0b6 | 5842 | return MATCH_ERROR; |
f5acf0f2 | 5843 | |
a8b3b0b6 CR |
5844 | /* Get the closing quotation. */ |
5845 | if (double_quote == MATCH_YES) | |
5846 | { | |
5847 | if (gfc_match_char ('"') != MATCH_YES) | |
5848 | { | |
5849 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5850 | /* User started string with '"' so looked to match it. */ | |
5851 | return MATCH_ERROR; | |
5852 | } | |
5853 | } | |
5854 | else | |
5855 | { | |
5856 | if (gfc_match_char ('\'') != MATCH_YES) | |
5857 | { | |
5858 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5859 | /* User started string with "'" char. */ | |
5860 | return MATCH_ERROR; | |
5861 | } | |
5862 | } | |
5863 | } | |
5864 | ||
5865 | /* Get the required right paren. */ | |
5866 | if (gfc_match_char (')') != MATCH_YES) | |
5867 | { | |
5868 | gfc_error ("Missing closing paren for binding label at %C"); | |
5869 | return MATCH_ERROR; | |
5870 | } | |
5871 | ||
1eabf70a TB |
5872 | if (has_name_equals && !allow_binding_name) |
5873 | { | |
5874 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5875 | return MATCH_ERROR; | |
5876 | } | |
5877 | ||
5878 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5879 | { | |
5880 | gfc_error ("For dummy procedure %s, no binding name is " | |
5881 | "allowed in BIND(C) at %C", sym->name); | |
5882 | return MATCH_ERROR; | |
5883 | } | |
5884 | ||
5885 | ||
a8b3b0b6 CR |
5886 | /* Save the binding label to the symbol. If sym is null, we're |
5887 | probably matching the typespec attributes of a declaration and | |
5888 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 5889 | if (binding_label) |
a8b3b0b6 CR |
5890 | { |
5891 | if (sym != NULL) | |
62603fae | 5892 | sym->binding_label = binding_label; |
a8b3b0b6 | 5893 | else |
62603fae | 5894 | curr_binding_label = binding_label; |
a8b3b0b6 | 5895 | } |
1eabf70a | 5896 | else if (allow_binding_name) |
a8b3b0b6 CR |
5897 | { |
5898 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
5899 | can set the label for it here. |
5900 | If name="" or allow_binding_name is false, no C binding name is | |
5901 | created. */ | |
a8b3b0b6 | 5902 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 5903 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 5904 | } |
9e1d712c | 5905 | |
129d15a3 JW |
5906 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5907 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
5908 | { |
5909 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5910 | return MATCH_ERROR; | |
5911 | } | |
5912 | ||
a8b3b0b6 CR |
5913 | return MATCH_YES; |
5914 | } | |
5915 | ||
5916 | ||
1f2959f0 | 5917 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
5918 | |
5919 | static int | |
5920 | contained_procedure (void) | |
5921 | { | |
083de129 | 5922 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 5923 | |
083de129 TB |
5924 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5925 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5926 | return 1; | |
ddc9ce91 TS |
5927 | |
5928 | return 0; | |
5929 | } | |
5930 | ||
d51347f9 | 5931 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
5932 | interoperable with the corresponding C enumeration type, making |
5933 | sure that -fshort-enums is honored. */ | |
5934 | ||
5935 | static void | |
5936 | set_enum_kind(void) | |
5937 | { | |
5938 | enumerator_history *current_history = NULL; | |
5939 | int kind; | |
5940 | int i; | |
5941 | ||
5942 | if (max_enum == NULL || enum_history == NULL) | |
5943 | return; | |
5944 | ||
cab129d1 | 5945 | if (!flag_short_enums) |
d51347f9 TB |
5946 | return; |
5947 | ||
25d8f0a2 TS |
5948 | i = 0; |
5949 | do | |
5950 | { | |
5951 | kind = gfc_integer_kinds[i++].kind; | |
5952 | } | |
d51347f9 | 5953 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
5954 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5955 | kind) != ARITH_OK); | |
5956 | ||
5957 | current_history = enum_history; | |
5958 | while (current_history != NULL) | |
5959 | { | |
5960 | current_history->sym->ts.kind = kind; | |
5961 | current_history = current_history->next; | |
5962 | } | |
5963 | } | |
5964 | ||
636dff67 | 5965 | |
6de9cd9a | 5966 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
5967 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5968 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
5969 | |
5970 | match | |
636dff67 | 5971 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
5972 | { |
5973 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5974 | gfc_compile_state state; | |
5975 | locus old_loc; | |
5976 | const char *block_name; | |
5977 | const char *target; | |
ddc9ce91 | 5978 | int eos_ok; |
6de9cd9a | 5979 | match m; |
0cab6b73 TK |
5980 | gfc_namespace *parent_ns, *ns, *prev_ns; |
5981 | gfc_namespace **nsp; | |
6de9cd9a | 5982 | |
63645982 | 5983 | old_loc = gfc_current_locus; |
6de9cd9a DN |
5984 | if (gfc_match ("end") != MATCH_YES) |
5985 | return MATCH_NO; | |
5986 | ||
5987 | state = gfc_current_state (); | |
636dff67 SK |
5988 | block_name = gfc_current_block () == NULL |
5989 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 5990 | |
03af1e4c | 5991 | switch (state) |
6de9cd9a | 5992 | { |
03af1e4c DK |
5993 | case COMP_ASSOCIATE: |
5994 | case COMP_BLOCK: | |
3a1fd30c | 5995 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
5996 | block_name = NULL; |
5997 | break; | |
5998 | ||
5999 | case COMP_CONTAINS: | |
6000 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6001 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6002 | block_name = gfc_state_stack->previous->sym == NULL |
6003 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
6004 | break; |
6005 | ||
6006 | default: | |
6007 | break; | |
6de9cd9a DN |
6008 | } |
6009 | ||
6010 | switch (state) | |
6011 | { | |
6012 | case COMP_NONE: | |
6013 | case COMP_PROGRAM: | |
6014 | *st = ST_END_PROGRAM; | |
6015 | target = " program"; | |
ddc9ce91 | 6016 | eos_ok = 1; |
6de9cd9a DN |
6017 | break; |
6018 | ||
6019 | case COMP_SUBROUTINE: | |
6020 | *st = ST_END_SUBROUTINE; | |
6021 | target = " subroutine"; | |
ddc9ce91 | 6022 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6023 | break; |
6024 | ||
6025 | case COMP_FUNCTION: | |
6026 | *st = ST_END_FUNCTION; | |
6027 | target = " function"; | |
ddc9ce91 | 6028 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6029 | break; |
6030 | ||
6031 | case COMP_BLOCK_DATA: | |
6032 | *st = ST_END_BLOCK_DATA; | |
6033 | target = " block data"; | |
ddc9ce91 | 6034 | eos_ok = 1; |
6de9cd9a DN |
6035 | break; |
6036 | ||
6037 | case COMP_MODULE: | |
6038 | *st = ST_END_MODULE; | |
6039 | target = " module"; | |
ddc9ce91 | 6040 | eos_ok = 1; |
6de9cd9a DN |
6041 | break; |
6042 | ||
6043 | case COMP_INTERFACE: | |
6044 | *st = ST_END_INTERFACE; | |
6045 | target = " interface"; | |
ddc9ce91 | 6046 | eos_ok = 0; |
6de9cd9a DN |
6047 | break; |
6048 | ||
6049 | case COMP_DERIVED: | |
30b608eb | 6050 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6051 | *st = ST_END_TYPE; |
6052 | target = " type"; | |
ddc9ce91 | 6053 | eos_ok = 0; |
6de9cd9a DN |
6054 | break; |
6055 | ||
03af1e4c DK |
6056 | case COMP_ASSOCIATE: |
6057 | *st = ST_END_ASSOCIATE; | |
6058 | target = " associate"; | |
6059 | eos_ok = 0; | |
6060 | break; | |
6061 | ||
9abe5e56 DK |
6062 | case COMP_BLOCK: |
6063 | *st = ST_END_BLOCK; | |
6064 | target = " block"; | |
6065 | eos_ok = 0; | |
6066 | break; | |
6067 | ||
6de9cd9a DN |
6068 | case COMP_IF: |
6069 | *st = ST_ENDIF; | |
6070 | target = " if"; | |
ddc9ce91 | 6071 | eos_ok = 0; |
6de9cd9a DN |
6072 | break; |
6073 | ||
6074 | case COMP_DO: | |
8c6a85e3 | 6075 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6076 | *st = ST_ENDDO; |
6077 | target = " do"; | |
ddc9ce91 | 6078 | eos_ok = 0; |
6de9cd9a DN |
6079 | break; |
6080 | ||
d0a4a61c TB |
6081 | case COMP_CRITICAL: |
6082 | *st = ST_END_CRITICAL; | |
6083 | target = " critical"; | |
6084 | eos_ok = 0; | |
6085 | break; | |
6086 | ||
6de9cd9a | 6087 | case COMP_SELECT: |
cf2b3c22 | 6088 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6089 | *st = ST_END_SELECT; |
6090 | target = " select"; | |
ddc9ce91 | 6091 | eos_ok = 0; |
6de9cd9a DN |
6092 | break; |
6093 | ||
6094 | case COMP_FORALL: | |
6095 | *st = ST_END_FORALL; | |
6096 | target = " forall"; | |
ddc9ce91 | 6097 | eos_ok = 0; |
6de9cd9a DN |
6098 | break; |
6099 | ||
6100 | case COMP_WHERE: | |
6101 | *st = ST_END_WHERE; | |
6102 | target = " where"; | |
ddc9ce91 | 6103 | eos_ok = 0; |
6de9cd9a DN |
6104 | break; |
6105 | ||
25d8f0a2 TS |
6106 | case COMP_ENUM: |
6107 | *st = ST_END_ENUM; | |
6108 | target = " enum"; | |
6109 | eos_ok = 0; | |
6110 | last_initializer = NULL; | |
6111 | set_enum_kind (); | |
6112 | gfc_free_enum_history (); | |
6113 | break; | |
6114 | ||
6de9cd9a DN |
6115 | default: |
6116 | gfc_error ("Unexpected END statement at %C"); | |
6117 | goto cleanup; | |
6118 | } | |
6119 | ||
3a43b5b3 | 6120 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6121 | if (gfc_match_eos () == MATCH_YES) |
6122 | { | |
272001a2 TB |
6123 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6124 | { | |
524af0d6 JB |
6125 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6126 | "instead of %s statement at %L", | |
6127 | gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6128 | goto cleanup; |
6129 | } | |
6130 | else if (!eos_ok) | |
6de9cd9a | 6131 | { |
66e4ab31 | 6132 | /* We would have required END [something]. */ |
59ce85b5 TS |
6133 | gfc_error ("%s statement expected at %L", |
6134 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6135 | goto cleanup; |
6136 | } | |
6137 | ||
6138 | return MATCH_YES; | |
6139 | } | |
6140 | ||
6141 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6142 | if (gfc_match (target) != MATCH_YES) | |
6143 | { | |
3a43b5b3 TB |
6144 | gfc_error ("Expecting %s statement at %L", gfc_ascii_statement (*st), |
6145 | &old_loc); | |
6de9cd9a DN |
6146 | goto cleanup; |
6147 | } | |
6148 | ||
3a43b5b3 | 6149 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6150 | /* If we're at the end, make sure a block name wasn't required. */ |
6151 | if (gfc_match_eos () == MATCH_YES) | |
6152 | { | |
6153 | ||
690af379 | 6154 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6155 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6156 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6157 | return MATCH_YES; |
6158 | ||
9abe5e56 | 6159 | if (!block_name) |
6de9cd9a DN |
6160 | return MATCH_YES; |
6161 | ||
3a43b5b3 TB |
6162 | gfc_error ("Expected block name of '%s' in %s statement at %L", |
6163 | block_name, gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6164 | |
6165 | return MATCH_ERROR; | |
6166 | } | |
6167 | ||
6168 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6169 | if (*st == ST_END_INTERFACE) | |
6170 | return gfc_match_end_interface (); | |
6171 | ||
66e4ab31 SK |
6172 | /* We haven't hit the end of statement, so what is left must be an |
6173 | end-name. */ | |
6de9cd9a DN |
6174 | m = gfc_match_space (); |
6175 | if (m == MATCH_YES) | |
6176 | m = gfc_match_name (name); | |
6177 | ||
6178 | if (m == MATCH_NO) | |
6179 | gfc_error ("Expected terminating name at %C"); | |
6180 | if (m != MATCH_YES) | |
6181 | goto cleanup; | |
6182 | ||
6183 | if (block_name == NULL) | |
6184 | goto syntax; | |
6185 | ||
3070bab4 | 6186 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a DN |
6187 | { |
6188 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6189 | gfc_ascii_statement (*st)); | |
6190 | goto cleanup; | |
6191 | } | |
3070bab4 JW |
6192 | /* Procedure pointer as function result. */ |
6193 | else if (strcmp (block_name, "ppr@") == 0 | |
6194 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6195 | { | |
6196 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6197 | gfc_current_block ()->ns->proc_name->name, | |
6198 | gfc_ascii_statement (*st)); | |
6199 | goto cleanup; | |
6200 | } | |
6de9cd9a DN |
6201 | |
6202 | if (gfc_match_eos () == MATCH_YES) | |
6203 | return MATCH_YES; | |
6204 | ||
6205 | syntax: | |
6206 | gfc_syntax_error (*st); | |
6207 | ||
6208 | cleanup: | |
63645982 | 6209 | gfc_current_locus = old_loc; |
0cab6b73 TK |
6210 | |
6211 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6212 | Remove it from the parent namespace's sibling list. */ | |
6213 | ||
6214 | if (state == COMP_BLOCK) | |
6215 | { | |
6216 | parent_ns = gfc_current_ns->parent; | |
6217 | ||
6218 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6219 | ||
6220 | prev_ns = NULL; | |
6221 | ns = *nsp; | |
6222 | while (ns) | |
6223 | { | |
6224 | if (ns == gfc_current_ns) | |
6225 | { | |
6226 | if (prev_ns == NULL) | |
6227 | *nsp = NULL; | |
6228 | else | |
6229 | prev_ns->sibling = ns->sibling; | |
6230 | } | |
6231 | prev_ns = ns; | |
6232 | ns = ns->sibling; | |
6233 | } | |
6234 | ||
6235 | gfc_free_namespace (gfc_current_ns); | |
6236 | gfc_current_ns = parent_ns; | |
6237 | } | |
6238 | ||
6de9cd9a DN |
6239 | return MATCH_ERROR; |
6240 | } | |
6241 | ||
6242 | ||
6243 | ||
6244 | /***************** Attribute declaration statements ****************/ | |
6245 | ||
6246 | /* Set the attribute of a single variable. */ | |
6247 | ||
6248 | static match | |
6249 | attr_decl1 (void) | |
6250 | { | |
6251 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6252 | gfc_array_spec *as; | |
6253 | gfc_symbol *sym; | |
6254 | locus var_locus; | |
6255 | match m; | |
6256 | ||
6257 | as = NULL; | |
6258 | ||
6259 | m = gfc_match_name (name); | |
6260 | if (m != MATCH_YES) | |
6261 | goto cleanup; | |
6262 | ||
08a6b8e0 | 6263 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6264 | return MATCH_ERROR; |
6265 | ||
524af0d6 | 6266 | if (!check_function_name (name)) |
bb9de0c4 JW |
6267 | { |
6268 | m = MATCH_ERROR; | |
6269 | goto cleanup; | |
6270 | } | |
f5acf0f2 | 6271 | |
63645982 | 6272 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6273 | |
6274 | /* Deal with possible array specification for certain attributes. */ | |
6275 | if (current_attr.dimension | |
be59db2d | 6276 | || current_attr.codimension |
6de9cd9a DN |
6277 | || current_attr.allocatable |
6278 | || current_attr.pointer | |
6279 | || current_attr.target) | |
6280 | { | |
be59db2d TB |
6281 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6282 | !current_attr.dimension | |
6283 | && !current_attr.pointer | |
6284 | && !current_attr.target); | |
6de9cd9a DN |
6285 | if (m == MATCH_ERROR) |
6286 | goto cleanup; | |
6287 | ||
6288 | if (current_attr.dimension && m == MATCH_NO) | |
6289 | { | |
636dff67 SK |
6290 | gfc_error ("Missing array specification at %L in DIMENSION " |
6291 | "statement", &var_locus); | |
6de9cd9a DN |
6292 | m = MATCH_ERROR; |
6293 | goto cleanup; | |
6294 | } | |
6295 | ||
1283ab12 TB |
6296 | if (current_attr.dimension && sym->value) |
6297 | { | |
6298 | gfc_error ("Dimensions specified for %s at %L after its " | |
6299 | "initialisation", sym->name, &var_locus); | |
6300 | m = MATCH_ERROR; | |
6301 | goto cleanup; | |
6302 | } | |
6303 | ||
be59db2d TB |
6304 | if (current_attr.codimension && m == MATCH_NO) |
6305 | { | |
6306 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6307 | "statement", &var_locus); | |
6308 | m = MATCH_ERROR; | |
6309 | goto cleanup; | |
6310 | } | |
6311 | ||
6de9cd9a DN |
6312 | if ((current_attr.allocatable || current_attr.pointer) |
6313 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6314 | { | |
636dff67 | 6315 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6316 | m = MATCH_ERROR; |
6317 | goto cleanup; | |
6318 | } | |
6319 | } | |
6320 | ||
2e23972e JW |
6321 | /* Update symbol table. DIMENSION attribute is set in |
6322 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6323 | to the first component, or '_data' field. */ |
d40477b4 | 6324 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6325 | { |
524af0d6 | 6326 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6327 | { |
6328 | m = MATCH_ERROR; | |
6329 | goto cleanup; | |
6330 | } | |
2e23972e JW |
6331 | } |
6332 | else | |
6333 | { | |
be59db2d | 6334 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 6335 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6336 | { |
6337 | m = MATCH_ERROR; | |
6338 | goto cleanup; | |
6339 | } | |
6de9cd9a | 6340 | } |
f5acf0f2 | 6341 | |
528622fd | 6342 | if (sym->ts.type == BT_CLASS |
524af0d6 | 6343 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false)) |
96d9b22c JW |
6344 | { |
6345 | m = MATCH_ERROR; | |
6346 | goto cleanup; | |
6347 | } | |
6de9cd9a | 6348 | |
524af0d6 | 6349 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
6350 | { |
6351 | m = MATCH_ERROR; | |
6352 | goto cleanup; | |
6353 | } | |
d51347f9 | 6354 | |
83d890b9 AL |
6355 | if (sym->attr.cray_pointee && sym->as != NULL) |
6356 | { | |
6357 | /* Fix the array spec. */ | |
f5acf0f2 | 6358 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
6359 | if (m == MATCH_ERROR) |
6360 | goto cleanup; | |
6361 | } | |
6de9cd9a | 6362 | |
524af0d6 | 6363 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
6364 | { |
6365 | m = MATCH_ERROR; | |
6366 | goto cleanup; | |
6367 | } | |
6368 | ||
6de9cd9a DN |
6369 | if ((current_attr.external || current_attr.intrinsic) |
6370 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 6371 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
6372 | { |
6373 | m = MATCH_ERROR; | |
6374 | goto cleanup; | |
6375 | } | |
6376 | ||
3070bab4 JW |
6377 | add_hidden_procptr_result (sym); |
6378 | ||
6de9cd9a DN |
6379 | return MATCH_YES; |
6380 | ||
6381 | cleanup: | |
6382 | gfc_free_array_spec (as); | |
6383 | return m; | |
6384 | } | |
6385 | ||
6386 | ||
6387 | /* Generic attribute declaration subroutine. Used for attributes that | |
6388 | just have a list of names. */ | |
6389 | ||
6390 | static match | |
6391 | attr_decl (void) | |
6392 | { | |
6393 | match m; | |
6394 | ||
6395 | /* Gobble the optional double colon, by simply ignoring the result | |
6396 | of gfc_match(). */ | |
6397 | gfc_match (" ::"); | |
6398 | ||
6399 | for (;;) | |
6400 | { | |
6401 | m = attr_decl1 (); | |
6402 | if (m != MATCH_YES) | |
6403 | break; | |
6404 | ||
6405 | if (gfc_match_eos () == MATCH_YES) | |
6406 | { | |
6407 | m = MATCH_YES; | |
6408 | break; | |
6409 | } | |
6410 | ||
6411 | if (gfc_match_char (',') != MATCH_YES) | |
6412 | { | |
6413 | gfc_error ("Unexpected character in variable list at %C"); | |
6414 | m = MATCH_ERROR; | |
6415 | break; | |
6416 | } | |
6417 | } | |
6418 | ||
6419 | return m; | |
6420 | } | |
6421 | ||
6422 | ||
83d890b9 AL |
6423 | /* This routine matches Cray Pointer declarations of the form: |
6424 | pointer ( <pointer>, <pointee> ) | |
6425 | or | |
d51347f9 TB |
6426 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6427 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6428 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6429 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6430 | the pointee. For the statement |
83d890b9 AL |
6431 | pointer (ipt, ar(10)) |
6432 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6433 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6434 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6435 | |
6436 | static match | |
6437 | cray_pointer_decl (void) | |
6438 | { | |
6439 | match m; | |
be59db2d | 6440 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6441 | gfc_symbol *cptr; /* Pointer symbol. */ |
6442 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6443 | locus var_locus; | |
6444 | bool done = false; | |
6445 | ||
6446 | while (!done) | |
6447 | { | |
6448 | if (gfc_match_char ('(') != MATCH_YES) | |
6449 | { | |
6450 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 6451 | return MATCH_ERROR; |
83d890b9 | 6452 | } |
d51347f9 | 6453 | |
83d890b9 AL |
6454 | /* Match pointer. */ |
6455 | var_locus = gfc_current_locus; | |
6456 | gfc_clear_attr (¤t_attr); | |
6457 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6458 | current_ts.type = BT_INTEGER; | |
6459 | current_ts.kind = gfc_index_integer_kind; | |
6460 | ||
d51347f9 | 6461 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6462 | if (m != MATCH_YES) |
6463 | { | |
6464 | gfc_error ("Expected variable name at %C"); | |
6465 | return m; | |
6466 | } | |
d51347f9 | 6467 | |
524af0d6 | 6468 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
6469 | return MATCH_ERROR; |
6470 | ||
d51347f9 | 6471 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6472 | |
6473 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6474 | { | |
6475 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6476 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6477 | } |
6478 | else if (cptr->ts.type != BT_INTEGER) | |
6479 | { | |
e25a0da3 | 6480 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6481 | return MATCH_ERROR; |
6482 | } | |
6483 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6484 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 6485 | " memory addresses require %d bytes", |
636dff67 | 6486 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6487 | |
6488 | if (gfc_match_char (',') != MATCH_YES) | |
6489 | { | |
6490 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6491 | return MATCH_ERROR; |
83d890b9 AL |
6492 | } |
6493 | ||
d51347f9 | 6494 | /* Match Pointee. */ |
83d890b9 AL |
6495 | var_locus = gfc_current_locus; |
6496 | gfc_clear_attr (¤t_attr); | |
6497 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6498 | current_ts.type = BT_UNKNOWN; | |
6499 | current_ts.kind = 0; | |
6500 | ||
6501 | m = gfc_match_symbol (&cpte, 0); | |
6502 | if (m != MATCH_YES) | |
6503 | { | |
6504 | gfc_error ("Expected variable name at %C"); | |
6505 | return m; | |
6506 | } | |
d51347f9 | 6507 | |
83d890b9 | 6508 | /* Check for an optional array spec. */ |
be59db2d | 6509 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6510 | if (m == MATCH_ERROR) |
6511 | { | |
6512 | gfc_free_array_spec (as); | |
6513 | return m; | |
6514 | } | |
6515 | else if (m == MATCH_NO) | |
6516 | { | |
6517 | gfc_free_array_spec (as); | |
6518 | as = NULL; | |
f5acf0f2 | 6519 | } |
83d890b9 | 6520 | |
524af0d6 | 6521 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
6522 | return MATCH_ERROR; |
6523 | ||
6524 | gfc_set_sym_referenced (cpte); | |
6525 | ||
6526 | if (cpte->as == NULL) | |
6527 | { | |
524af0d6 | 6528 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
6529 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6530 | } | |
6531 | else if (as != NULL) | |
6532 | { | |
e25a0da3 | 6533 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6534 | gfc_free_array_spec (as); |
6535 | return MATCH_ERROR; | |
6536 | } | |
f5acf0f2 | 6537 | |
83d890b9 | 6538 | as = NULL; |
f5acf0f2 | 6539 | |
83d890b9 AL |
6540 | if (cpte->as != NULL) |
6541 | { | |
6542 | /* Fix array spec. */ | |
6543 | m = gfc_mod_pointee_as (cpte->as); | |
6544 | if (m == MATCH_ERROR) | |
6545 | return m; | |
f5acf0f2 PT |
6546 | } |
6547 | ||
83d890b9 | 6548 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 6549 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6550 | |
6551 | if (gfc_match_char (')') != MATCH_YES) | |
6552 | { | |
6553 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 6554 | return MATCH_ERROR; |
83d890b9 AL |
6555 | } |
6556 | m = gfc_match_char (','); | |
6557 | if (m != MATCH_YES) | |
6558 | done = true; /* Stop searching for more declarations. */ | |
6559 | ||
6560 | } | |
f5acf0f2 | 6561 | |
83d890b9 AL |
6562 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6563 | || gfc_match_eos () != MATCH_YES) | |
6564 | { | |
6565 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6566 | return MATCH_ERROR; | |
6567 | } | |
6568 | return MATCH_YES; | |
6569 | } | |
6570 | ||
6571 | ||
6de9cd9a DN |
6572 | match |
6573 | gfc_match_external (void) | |
6574 | { | |
6575 | ||
6576 | gfc_clear_attr (¤t_attr); | |
1902704e | 6577 | current_attr.external = 1; |
6de9cd9a DN |
6578 | |
6579 | return attr_decl (); | |
6580 | } | |
6581 | ||
6582 | ||
6de9cd9a DN |
6583 | match |
6584 | gfc_match_intent (void) | |
6585 | { | |
6586 | sym_intent intent; | |
6587 | ||
9abe5e56 DK |
6588 | /* This is not allowed within a BLOCK construct! */ |
6589 | if (gfc_current_state () == COMP_BLOCK) | |
6590 | { | |
6591 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6592 | return MATCH_ERROR; | |
6593 | } | |
6594 | ||
6de9cd9a DN |
6595 | intent = match_intent_spec (); |
6596 | if (intent == INTENT_UNKNOWN) | |
6597 | return MATCH_ERROR; | |
6598 | ||
6599 | gfc_clear_attr (¤t_attr); | |
1902704e | 6600 | current_attr.intent = intent; |
6de9cd9a DN |
6601 | |
6602 | return attr_decl (); | |
6603 | } | |
6604 | ||
6605 | ||
6606 | match | |
6607 | gfc_match_intrinsic (void) | |
6608 | { | |
6609 | ||
6610 | gfc_clear_attr (¤t_attr); | |
1902704e | 6611 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6612 | |
6613 | return attr_decl (); | |
6614 | } | |
6615 | ||
6616 | ||
6617 | match | |
6618 | gfc_match_optional (void) | |
6619 | { | |
9abe5e56 DK |
6620 | /* This is not allowed within a BLOCK construct! */ |
6621 | if (gfc_current_state () == COMP_BLOCK) | |
6622 | { | |
6623 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6624 | return MATCH_ERROR; | |
6625 | } | |
6de9cd9a DN |
6626 | |
6627 | gfc_clear_attr (¤t_attr); | |
1902704e | 6628 | current_attr.optional = 1; |
6de9cd9a DN |
6629 | |
6630 | return attr_decl (); | |
6631 | } | |
6632 | ||
6633 | ||
6634 | match | |
6635 | gfc_match_pointer (void) | |
6636 | { | |
83d890b9 | 6637 | gfc_gobble_whitespace (); |
8fc541d3 | 6638 | if (gfc_peek_ascii_char () == '(') |
83d890b9 AL |
6639 | { |
6640 | if (!gfc_option.flag_cray_pointer) | |
6641 | { | |
636dff67 SK |
6642 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6643 | "flag"); | |
83d890b9 AL |
6644 | return MATCH_ERROR; |
6645 | } | |
6646 | return cray_pointer_decl (); | |
6647 | } | |
6648 | else | |
6649 | { | |
6650 | gfc_clear_attr (¤t_attr); | |
1902704e | 6651 | current_attr.pointer = 1; |
f5acf0f2 | 6652 | |
83d890b9 AL |
6653 | return attr_decl (); |
6654 | } | |
6de9cd9a DN |
6655 | } |
6656 | ||
6657 | ||
6658 | match | |
6659 | gfc_match_allocatable (void) | |
6660 | { | |
6de9cd9a | 6661 | gfc_clear_attr (¤t_attr); |
1902704e | 6662 | current_attr.allocatable = 1; |
6de9cd9a DN |
6663 | |
6664 | return attr_decl (); | |
6665 | } | |
6666 | ||
6667 | ||
be59db2d TB |
6668 | match |
6669 | gfc_match_codimension (void) | |
6670 | { | |
6671 | gfc_clear_attr (¤t_attr); | |
6672 | current_attr.codimension = 1; | |
6673 | ||
6674 | return attr_decl (); | |
6675 | } | |
6676 | ||
6677 | ||
fe4e525c TB |
6678 | match |
6679 | gfc_match_contiguous (void) | |
6680 | { | |
524af0d6 | 6681 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
6682 | return MATCH_ERROR; |
6683 | ||
6684 | gfc_clear_attr (¤t_attr); | |
6685 | current_attr.contiguous = 1; | |
6686 | ||
6687 | return attr_decl (); | |
6688 | } | |
6689 | ||
6690 | ||
6de9cd9a DN |
6691 | match |
6692 | gfc_match_dimension (void) | |
6693 | { | |
6de9cd9a | 6694 | gfc_clear_attr (¤t_attr); |
1902704e | 6695 | current_attr.dimension = 1; |
6de9cd9a DN |
6696 | |
6697 | return attr_decl (); | |
6698 | } | |
6699 | ||
6700 | ||
6701 | match | |
6702 | gfc_match_target (void) | |
6703 | { | |
6de9cd9a | 6704 | gfc_clear_attr (¤t_attr); |
1902704e | 6705 | current_attr.target = 1; |
6de9cd9a DN |
6706 | |
6707 | return attr_decl (); | |
6708 | } | |
6709 | ||
6710 | ||
6711 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6712 | statement. */ | |
6713 | ||
6714 | static match | |
6715 | access_attr_decl (gfc_statement st) | |
6716 | { | |
6717 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6718 | interface_type type; | |
6719 | gfc_user_op *uop; | |
c3f34952 | 6720 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 6721 | gfc_intrinsic_op op; |
6de9cd9a DN |
6722 | match m; |
6723 | ||
6724 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6725 | goto done; | |
6726 | ||
6727 | for (;;) | |
6728 | { | |
a1ee985f | 6729 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
6730 | if (m == MATCH_NO) |
6731 | goto syntax; | |
6732 | if (m == MATCH_ERROR) | |
6733 | return MATCH_ERROR; | |
6734 | ||
6735 | switch (type) | |
6736 | { | |
6737 | case INTERFACE_NAMELESS: | |
9e1d712c | 6738 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
6739 | goto syntax; |
6740 | ||
6741 | case INTERFACE_GENERIC: | |
6742 | if (gfc_get_symbol (name, NULL, &sym)) | |
6743 | goto done; | |
6744 | ||
524af0d6 JB |
6745 | if (!gfc_add_access (&sym->attr, |
6746 | (st == ST_PUBLIC) | |
6747 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
6748 | sym->name, NULL)) | |
6de9cd9a DN |
6749 | return MATCH_ERROR; |
6750 | ||
c3f34952 | 6751 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
524af0d6 JB |
6752 | && !gfc_add_access (&dt_sym->attr, |
6753 | (st == ST_PUBLIC) | |
6754 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
6755 | sym->name, NULL)) | |
c3f34952 TB |
6756 | return MATCH_ERROR; |
6757 | ||
6de9cd9a DN |
6758 | break; |
6759 | ||
6760 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 6761 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 6762 | { |
fb03a37e TK |
6763 | gfc_intrinsic_op other_op; |
6764 | ||
a1ee985f | 6765 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 6766 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
6767 | |
6768 | /* Handle the case if there is another op with the same | |
6769 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6770 | other_op = gfc_equivalent_op (op); | |
6771 | ||
6772 | if (other_op != INTRINSIC_NONE) | |
6773 | gfc_current_ns->operator_access[other_op] = | |
6774 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6775 | ||
6de9cd9a DN |
6776 | } |
6777 | else | |
6778 | { | |
6779 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 6780 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
6781 | goto done; |
6782 | } | |
6783 | ||
6784 | break; | |
6785 | ||
6786 | case INTERFACE_USER_OP: | |
6787 | uop = gfc_get_uop (name); | |
6788 | ||
6789 | if (uop->access == ACCESS_UNKNOWN) | |
6790 | { | |
636dff67 SK |
6791 | uop->access = (st == ST_PUBLIC) |
6792 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
6793 | } |
6794 | else | |
6795 | { | |
636dff67 SK |
6796 | gfc_error ("Access specification of the .%s. operator at %C " |
6797 | "has already been specified", sym->name); | |
6de9cd9a DN |
6798 | goto done; |
6799 | } | |
6800 | ||
6801 | break; | |
6802 | } | |
6803 | ||
6804 | if (gfc_match_char (',') == MATCH_NO) | |
6805 | break; | |
6806 | } | |
6807 | ||
6808 | if (gfc_match_eos () != MATCH_YES) | |
6809 | goto syntax; | |
6810 | return MATCH_YES; | |
6811 | ||
6812 | syntax: | |
6813 | gfc_syntax_error (st); | |
6814 | ||
6815 | done: | |
6816 | return MATCH_ERROR; | |
6817 | } | |
6818 | ||
6819 | ||
ee7e677f TB |
6820 | match |
6821 | gfc_match_protected (void) | |
6822 | { | |
6823 | gfc_symbol *sym; | |
6824 | match m; | |
6825 | ||
6826 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6827 | { | |
6828 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6829 | "part of a module"); | |
6830 | return MATCH_ERROR; | |
6831 | ||
6832 | } | |
6833 | ||
524af0d6 | 6834 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
6835 | return MATCH_ERROR; |
6836 | ||
6837 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6838 | { | |
6839 | return MATCH_ERROR; | |
6840 | } | |
6841 | ||
6842 | if (gfc_match_eos () == MATCH_YES) | |
6843 | goto syntax; | |
6844 | ||
6845 | for(;;) | |
6846 | { | |
6847 | m = gfc_match_symbol (&sym, 0); | |
6848 | switch (m) | |
6849 | { | |
6850 | case MATCH_YES: | |
524af0d6 | 6851 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
6852 | return MATCH_ERROR; |
6853 | goto next_item; | |
6854 | ||
6855 | case MATCH_NO: | |
6856 | break; | |
6857 | ||
6858 | case MATCH_ERROR: | |
6859 | return MATCH_ERROR; | |
6860 | } | |
6861 | ||
6862 | next_item: | |
6863 | if (gfc_match_eos () == MATCH_YES) | |
6864 | break; | |
6865 | if (gfc_match_char (',') != MATCH_YES) | |
6866 | goto syntax; | |
6867 | } | |
6868 | ||
6869 | return MATCH_YES; | |
6870 | ||
6871 | syntax: | |
6872 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6873 | return MATCH_ERROR; | |
6874 | } | |
6875 | ||
6876 | ||
86bf520d | 6877 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 6878 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
6879 | type declaration or a module. */ |
6880 | ||
6881 | match | |
636dff67 | 6882 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
6883 | { |
6884 | ||
6885 | if (gfc_match ("private") != MATCH_YES) | |
6886 | return MATCH_NO; | |
6887 | ||
d51347f9 | 6888 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
6889 | && !(gfc_current_state () == COMP_DERIVED |
6890 | && gfc_state_stack->previous | |
6891 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6892 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6893 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6894 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
6895 | { |
6896 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6897 | "specification part of a module"); | |
6898 | return MATCH_ERROR; | |
6899 | } | |
6900 | ||
6de9cd9a DN |
6901 | if (gfc_current_state () == COMP_DERIVED) |
6902 | { | |
6903 | if (gfc_match_eos () == MATCH_YES) | |
6904 | { | |
6905 | *st = ST_PRIVATE; | |
6906 | return MATCH_YES; | |
6907 | } | |
6908 | ||
6909 | gfc_syntax_error (ST_PRIVATE); | |
6910 | return MATCH_ERROR; | |
6911 | } | |
6912 | ||
6913 | if (gfc_match_eos () == MATCH_YES) | |
6914 | { | |
6915 | *st = ST_PRIVATE; | |
6916 | return MATCH_YES; | |
6917 | } | |
6918 | ||
6919 | *st = ST_ATTR_DECL; | |
6920 | return access_attr_decl (ST_PRIVATE); | |
6921 | } | |
6922 | ||
6923 | ||
6924 | match | |
636dff67 | 6925 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
6926 | { |
6927 | ||
6928 | if (gfc_match ("public") != MATCH_YES) | |
6929 | return MATCH_NO; | |
6930 | ||
d51347f9 TB |
6931 | if (gfc_current_state () != COMP_MODULE) |
6932 | { | |
6933 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6934 | "specification part of a module"); | |
6935 | return MATCH_ERROR; | |
6936 | } | |
6937 | ||
6de9cd9a DN |
6938 | if (gfc_match_eos () == MATCH_YES) |
6939 | { | |
6940 | *st = ST_PUBLIC; | |
6941 | return MATCH_YES; | |
6942 | } | |
6943 | ||
6944 | *st = ST_ATTR_DECL; | |
6945 | return access_attr_decl (ST_PUBLIC); | |
6946 | } | |
6947 | ||
6948 | ||
6949 | /* Workhorse for gfc_match_parameter. */ | |
6950 | ||
6951 | static match | |
6952 | do_parm (void) | |
6953 | { | |
6954 | gfc_symbol *sym; | |
6955 | gfc_expr *init; | |
6956 | match m; | |
524af0d6 | 6957 | bool t; |
6de9cd9a DN |
6958 | |
6959 | m = gfc_match_symbol (&sym, 0); | |
6960 | if (m == MATCH_NO) | |
6961 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6962 | ||
6963 | if (m != MATCH_YES) | |
6964 | return m; | |
6965 | ||
6966 | if (gfc_match_char ('=') == MATCH_NO) | |
6967 | { | |
6968 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6969 | return MATCH_ERROR; | |
6970 | } | |
6971 | ||
6972 | m = gfc_match_init_expr (&init); | |
6973 | if (m == MATCH_NO) | |
6974 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6975 | if (m != MATCH_YES) | |
6976 | return m; | |
6977 | ||
6978 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 6979 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
6980 | { |
6981 | m = MATCH_ERROR; | |
6982 | goto cleanup; | |
6983 | } | |
6984 | ||
524af0d6 JB |
6985 | if (!gfc_check_assign_symbol (sym, NULL, init) |
6986 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
6987 | { |
6988 | m = MATCH_ERROR; | |
6989 | goto cleanup; | |
6990 | } | |
6991 | ||
1283ab12 TB |
6992 | if (sym->value) |
6993 | { | |
6994 | gfc_error ("Initializing already initialized variable at %C"); | |
6995 | m = MATCH_ERROR; | |
6996 | goto cleanup; | |
6997 | } | |
6998 | ||
7919373d | 6999 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7000 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7001 | |
7002 | cleanup: | |
7003 | gfc_free_expr (init); | |
7004 | return m; | |
7005 | } | |
7006 | ||
7007 | ||
7008 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7009 | ||
7010 | match | |
7011 | gfc_match_parameter (void) | |
7012 | { | |
7013 | match m; | |
7014 | ||
7015 | if (gfc_match_char ('(') == MATCH_NO) | |
7016 | return MATCH_NO; | |
7017 | ||
7018 | for (;;) | |
7019 | { | |
7020 | m = do_parm (); | |
7021 | if (m != MATCH_YES) | |
7022 | break; | |
7023 | ||
7024 | if (gfc_match (" )%t") == MATCH_YES) | |
7025 | break; | |
7026 | ||
7027 | if (gfc_match_char (',') != MATCH_YES) | |
7028 | { | |
7029 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7030 | m = MATCH_ERROR; | |
7031 | break; | |
7032 | } | |
7033 | } | |
7034 | ||
7035 | return m; | |
7036 | } | |
7037 | ||
7038 | ||
7039 | /* Save statements have a special syntax. */ | |
7040 | ||
7041 | match | |
7042 | gfc_match_save (void) | |
7043 | { | |
9056bd70 TS |
7044 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7045 | gfc_common_head *c; | |
6de9cd9a DN |
7046 | gfc_symbol *sym; |
7047 | match m; | |
7048 | ||
7049 | if (gfc_match_eos () == MATCH_YES) | |
7050 | { | |
7051 | if (gfc_current_ns->seen_save) | |
7052 | { | |
524af0d6 JB |
7053 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7054 | "follows previous SAVE statement")) | |
09e87839 | 7055 | return MATCH_ERROR; |
6de9cd9a DN |
7056 | } |
7057 | ||
7058 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7059 | return MATCH_YES; | |
7060 | } | |
7061 | ||
7062 | if (gfc_current_ns->save_all) | |
7063 | { | |
524af0d6 JB |
7064 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7065 | "blanket SAVE statement")) | |
09e87839 | 7066 | return MATCH_ERROR; |
6de9cd9a DN |
7067 | } |
7068 | ||
7069 | gfc_match (" ::"); | |
7070 | ||
7071 | for (;;) | |
7072 | { | |
7073 | m = gfc_match_symbol (&sym, 0); | |
7074 | switch (m) | |
7075 | { | |
7076 | case MATCH_YES: | |
524af0d6 JB |
7077 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7078 | &gfc_current_locus)) | |
6de9cd9a DN |
7079 | return MATCH_ERROR; |
7080 | goto next_item; | |
7081 | ||
7082 | case MATCH_NO: | |
7083 | break; | |
7084 | ||
7085 | case MATCH_ERROR: | |
7086 | return MATCH_ERROR; | |
7087 | } | |
7088 | ||
9056bd70 | 7089 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7090 | if (m == MATCH_ERROR) |
7091 | return MATCH_ERROR; | |
7092 | if (m == MATCH_NO) | |
7093 | goto syntax; | |
7094 | ||
53814b8f | 7095 | c = gfc_get_common (n, 0); |
9056bd70 TS |
7096 | c->saved = 1; |
7097 | ||
6de9cd9a DN |
7098 | gfc_current_ns->seen_save = 1; |
7099 | ||
7100 | next_item: | |
7101 | if (gfc_match_eos () == MATCH_YES) | |
7102 | break; | |
7103 | if (gfc_match_char (',') != MATCH_YES) | |
7104 | goto syntax; | |
7105 | } | |
7106 | ||
7107 | return MATCH_YES; | |
7108 | ||
7109 | syntax: | |
7110 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7111 | return MATCH_ERROR; | |
7112 | } | |
7113 | ||
7114 | ||
06469efd PT |
7115 | match |
7116 | gfc_match_value (void) | |
7117 | { | |
7118 | gfc_symbol *sym; | |
7119 | match m; | |
7120 | ||
9abe5e56 DK |
7121 | /* This is not allowed within a BLOCK construct! */ |
7122 | if (gfc_current_state () == COMP_BLOCK) | |
7123 | { | |
7124 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7125 | return MATCH_ERROR; | |
7126 | } | |
7127 | ||
524af0d6 | 7128 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
7129 | return MATCH_ERROR; |
7130 | ||
7131 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7132 | { | |
7133 | return MATCH_ERROR; | |
7134 | } | |
7135 | ||
7136 | if (gfc_match_eos () == MATCH_YES) | |
7137 | goto syntax; | |
7138 | ||
7139 | for(;;) | |
7140 | { | |
7141 | m = gfc_match_symbol (&sym, 0); | |
7142 | switch (m) | |
7143 | { | |
7144 | case MATCH_YES: | |
524af0d6 | 7145 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
7146 | return MATCH_ERROR; |
7147 | goto next_item; | |
7148 | ||
7149 | case MATCH_NO: | |
7150 | break; | |
7151 | ||
7152 | case MATCH_ERROR: | |
7153 | return MATCH_ERROR; | |
7154 | } | |
7155 | ||
7156 | next_item: | |
7157 | if (gfc_match_eos () == MATCH_YES) | |
7158 | break; | |
7159 | if (gfc_match_char (',') != MATCH_YES) | |
7160 | goto syntax; | |
7161 | } | |
7162 | ||
7163 | return MATCH_YES; | |
7164 | ||
7165 | syntax: | |
7166 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7167 | return MATCH_ERROR; | |
7168 | } | |
7169 | ||
66e4ab31 | 7170 | |
775e6c3a TB |
7171 | match |
7172 | gfc_match_volatile (void) | |
7173 | { | |
7174 | gfc_symbol *sym; | |
7175 | match m; | |
7176 | ||
524af0d6 | 7177 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
7178 | return MATCH_ERROR; |
7179 | ||
7180 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7181 | { | |
7182 | return MATCH_ERROR; | |
7183 | } | |
7184 | ||
7185 | if (gfc_match_eos () == MATCH_YES) | |
7186 | goto syntax; | |
7187 | ||
7188 | for(;;) | |
7189 | { | |
f5acf0f2 | 7190 | /* VOLATILE is special because it can be added to host-associated |
be59db2d | 7191 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7192 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7193 | switch (m) |
7194 | { | |
7195 | case MATCH_YES: | |
be59db2d TB |
7196 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7197 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7198 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7199 | { | |
7200 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7201 | "%C, which is use-/host-associated", sym->name); | |
7202 | return MATCH_ERROR; | |
7203 | } | |
524af0d6 | 7204 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
7205 | return MATCH_ERROR; |
7206 | goto next_item; | |
7207 | ||
7208 | case MATCH_NO: | |
7209 | break; | |
7210 | ||
7211 | case MATCH_ERROR: | |
7212 | return MATCH_ERROR; | |
7213 | } | |
7214 | ||
7215 | next_item: | |
7216 | if (gfc_match_eos () == MATCH_YES) | |
7217 | break; | |
7218 | if (gfc_match_char (',') != MATCH_YES) | |
7219 | goto syntax; | |
7220 | } | |
7221 | ||
7222 | return MATCH_YES; | |
7223 | ||
7224 | syntax: | |
7225 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7226 | return MATCH_ERROR; | |
7227 | } | |
7228 | ||
7229 | ||
1eee5628 TB |
7230 | match |
7231 | gfc_match_asynchronous (void) | |
7232 | { | |
7233 | gfc_symbol *sym; | |
7234 | match m; | |
7235 | ||
524af0d6 | 7236 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
7237 | return MATCH_ERROR; |
7238 | ||
7239 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7240 | { | |
7241 | return MATCH_ERROR; | |
7242 | } | |
7243 | ||
7244 | if (gfc_match_eos () == MATCH_YES) | |
7245 | goto syntax; | |
7246 | ||
7247 | for(;;) | |
7248 | { | |
f5acf0f2 | 7249 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
7250 | symbols locally. */ |
7251 | m = gfc_match_symbol (&sym, 1); | |
7252 | switch (m) | |
7253 | { | |
7254 | case MATCH_YES: | |
524af0d6 | 7255 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
7256 | return MATCH_ERROR; |
7257 | goto next_item; | |
7258 | ||
7259 | case MATCH_NO: | |
7260 | break; | |
7261 | ||
7262 | case MATCH_ERROR: | |
7263 | return MATCH_ERROR; | |
7264 | } | |
7265 | ||
7266 | next_item: | |
7267 | if (gfc_match_eos () == MATCH_YES) | |
7268 | break; | |
7269 | if (gfc_match_char (',') != MATCH_YES) | |
7270 | goto syntax; | |
7271 | } | |
7272 | ||
7273 | return MATCH_YES; | |
7274 | ||
7275 | syntax: | |
7276 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7277 | return MATCH_ERROR; | |
7278 | } | |
7279 | ||
7280 | ||
6de9cd9a DN |
7281 | /* Match a module procedure statement. Note that we have to modify |
7282 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7283 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7284 | |
7285 | match | |
7286 | gfc_match_modproc (void) | |
7287 | { | |
7288 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7289 | gfc_symbol *sym; | |
7290 | match m; | |
162b5a21 | 7291 | locus old_locus; |
060fca4a | 7292 | gfc_namespace *module_ns; |
2b77e908 | 7293 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7294 | |
7295 | if (gfc_state_stack->state != COMP_INTERFACE | |
7296 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7297 | || current_interface.type == INTERFACE_NAMELESS |
7298 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7299 | { |
636dff67 SK |
7300 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7301 | "interface"); | |
6de9cd9a DN |
7302 | return MATCH_ERROR; |
7303 | } | |
7304 | ||
060fca4a PT |
7305 | module_ns = gfc_current_ns->parent; |
7306 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7307 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7308 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7309 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7310 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7311 | break; |
7312 | ||
7313 | if (module_ns == NULL) | |
7314 | return MATCH_ERROR; | |
7315 | ||
2b77e908 FXC |
7316 | /* Store the current state of the interface. We will need it if we |
7317 | end up with a syntax error and need to recover. */ | |
7318 | old_interface_head = gfc_current_interface_head (); | |
7319 | ||
162b5a21 SK |
7320 | /* Check if the F2008 optional double colon appears. */ |
7321 | gfc_gobble_whitespace (); | |
7322 | old_locus = gfc_current_locus; | |
7323 | if (gfc_match ("::") == MATCH_YES) | |
7324 | { | |
524af0d6 JB |
7325 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7326 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
7327 | return MATCH_ERROR; |
7328 | } | |
7329 | else | |
7330 | gfc_current_locus = old_locus; | |
f5acf0f2 | 7331 | |
6de9cd9a DN |
7332 | for (;;) |
7333 | { | |
2b77e908 | 7334 | bool last = false; |
162b5a21 | 7335 | old_locus = gfc_current_locus; |
2b77e908 | 7336 | |
6de9cd9a DN |
7337 | m = gfc_match_name (name); |
7338 | if (m == MATCH_NO) | |
7339 | goto syntax; | |
7340 | if (m != MATCH_YES) | |
7341 | return MATCH_ERROR; | |
7342 | ||
2b77e908 FXC |
7343 | /* Check for syntax error before starting to add symbols to the |
7344 | current namespace. */ | |
7345 | if (gfc_match_eos () == MATCH_YES) | |
7346 | last = true; | |
162b5a21 | 7347 | |
2b77e908 FXC |
7348 | if (!last && gfc_match_char (',') != MATCH_YES) |
7349 | goto syntax; | |
7350 | ||
7351 | /* Now we're sure the syntax is valid, we process this item | |
7352 | further. */ | |
060fca4a | 7353 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7354 | return MATCH_ERROR; |
7355 | ||
43dfd40c SK |
7356 | if (sym->attr.intrinsic) |
7357 | { | |
7358 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7359 | "PROCEDURE", &old_locus); | |
7360 | return MATCH_ERROR; | |
7361 | } | |
7362 | ||
6de9cd9a | 7363 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 7364 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
7365 | return MATCH_ERROR; |
7366 | ||
524af0d6 | 7367 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
7368 | return MATCH_ERROR; |
7369 | ||
71f77fd7 | 7370 | sym->attr.mod_proc = 1; |
43dfd40c | 7371 | sym->declared_at = old_locus; |
71f77fd7 | 7372 | |
2b77e908 | 7373 | if (last) |
6de9cd9a | 7374 | break; |
6de9cd9a DN |
7375 | } |
7376 | ||
7377 | return MATCH_YES; | |
7378 | ||
7379 | syntax: | |
2b77e908 FXC |
7380 | /* Restore the previous state of the interface. */ |
7381 | interface = gfc_current_interface_head (); | |
7382 | gfc_set_current_interface_head (old_interface_head); | |
7383 | ||
7384 | /* Free the new interfaces. */ | |
7385 | while (interface != old_interface_head) | |
7386 | { | |
7387 | gfc_interface *i = interface->next; | |
cede9502 | 7388 | free (interface); |
2b77e908 FXC |
7389 | interface = i; |
7390 | } | |
7391 | ||
7392 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7393 | gfc_syntax_error (ST_MODULE_PROC); |
7394 | return MATCH_ERROR; | |
7395 | } | |
7396 | ||
7397 | ||
7d1f1e61 | 7398 | /* Check a derived type that is being extended. */ |
42e3d759 | 7399 | |
7d1f1e61 PT |
7400 | static gfc_symbol* |
7401 | check_extended_derived_type (char *name) | |
7402 | { | |
7403 | gfc_symbol *extended; | |
7404 | ||
7405 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7406 | { | |
7407 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7408 | return NULL; | |
7409 | } | |
7410 | ||
42e3d759 JW |
7411 | extended = gfc_find_dt_in_generic (extended); |
7412 | ||
7413 | /* F08:C428. */ | |
7d1f1e61 PT |
7414 | if (!extended) |
7415 | { | |
42e3d759 | 7416 | gfc_error ("Symbol '%s' at %C has not been previously defined", name); |
7d1f1e61 PT |
7417 | return NULL; |
7418 | } | |
7419 | ||
7420 | if (extended->attr.flavor != FL_DERIVED) | |
7421 | { | |
7422 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7423 | "derived type", name); | |
7424 | return NULL; | |
7425 | } | |
7426 | ||
7427 | if (extended->attr.is_bind_c) | |
7428 | { | |
7429 | gfc_error ("'%s' cannot be extended at %C because it " | |
7430 | "is BIND(C)", extended->name); | |
7431 | return NULL; | |
7432 | } | |
7433 | ||
7434 | if (extended->attr.sequence) | |
7435 | { | |
7436 | gfc_error ("'%s' cannot be extended at %C because it " | |
7437 | "is a SEQUENCE type", extended->name); | |
7438 | return NULL; | |
7439 | } | |
7440 | ||
7441 | return extended; | |
7442 | } | |
7443 | ||
7444 | ||
a8b3b0b6 CR |
7445 | /* Match the optional attribute specifiers for a type declaration. |
7446 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7447 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7448 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7449 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7450 | |
7451 | match | |
7d1f1e61 | 7452 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7453 | { |
a8b3b0b6 | 7454 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7455 | if (gfc_match (" , private") == MATCH_YES) |
7456 | { | |
d51347f9 | 7457 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7458 | { |
d51347f9 TB |
7459 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7460 | "specification part of a module"); | |
6de9cd9a DN |
7461 | return MATCH_ERROR; |
7462 | } | |
7463 | ||
524af0d6 | 7464 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 7465 | return MATCH_ERROR; |
6de9cd9a | 7466 | } |
a8b3b0b6 | 7467 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7468 | { |
d51347f9 | 7469 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7470 | { |
d51347f9 TB |
7471 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7472 | "specification part of a module"); | |
6de9cd9a DN |
7473 | return MATCH_ERROR; |
7474 | } | |
7475 | ||
524af0d6 | 7476 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 7477 | return MATCH_ERROR; |
6de9cd9a | 7478 | } |
52f49934 | 7479 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7480 | { |
7481 | /* If the type is defined to be bind(c) it then needs to make | |
7482 | sure that all fields are interoperable. This will | |
7483 | need to be a semantic check on the finished derived type. | |
7484 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 7485 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
7486 | return MATCH_ERROR; |
7487 | ||
7488 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7489 | } | |
52f49934 DK |
7490 | else if (gfc_match (" , abstract") == MATCH_YES) |
7491 | { | |
524af0d6 | 7492 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
7493 | return MATCH_ERROR; |
7494 | ||
524af0d6 | 7495 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
7496 | return MATCH_ERROR; |
7497 | } | |
524af0d6 | 7498 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 7499 | { |
524af0d6 | 7500 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
7501 | return MATCH_ERROR; |
7502 | } | |
a8b3b0b6 CR |
7503 | else |
7504 | return MATCH_NO; | |
7505 | ||
7506 | /* If we get here, something matched. */ | |
7507 | return MATCH_YES; | |
7508 | } | |
7509 | ||
7510 | ||
7511 | /* Match the beginning of a derived type declaration. If a type name | |
7512 | was the result of a function, then it is possible to have a symbol | |
7513 | already to be known as a derived type yet have no components. */ | |
7514 | ||
7515 | match | |
7516 | gfc_match_derived_decl (void) | |
7517 | { | |
7518 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7519 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7520 | symbol_attribute attr; |
c3f34952 | 7521 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7522 | gfc_symbol *extended; |
a8b3b0b6 CR |
7523 | match m; |
7524 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7525 | bool seen_attr = false; |
c3f34952 | 7526 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7527 | |
7528 | if (gfc_current_state () == COMP_DERIVED) | |
7529 | return MATCH_NO; | |
7530 | ||
7d1f1e61 PT |
7531 | name[0] = '\0'; |
7532 | parent[0] = '\0'; | |
a8b3b0b6 | 7533 | gfc_clear_attr (&attr); |
7d1f1e61 | 7534 | extended = NULL; |
a8b3b0b6 CR |
7535 | |
7536 | do | |
7537 | { | |
7d1f1e61 | 7538 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7539 | if (is_type_attr_spec == MATCH_ERROR) |
7540 | return MATCH_ERROR; | |
e7303e85 FXC |
7541 | if (is_type_attr_spec == MATCH_YES) |
7542 | seen_attr = true; | |
a8b3b0b6 | 7543 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7544 | |
63a3341a PT |
7545 | /* Deal with derived type extensions. The extension attribute has |
7546 | been added to 'attr' but now the parent type must be found and | |
7547 | checked. */ | |
7d1f1e61 PT |
7548 | if (parent[0]) |
7549 | extended = check_extended_derived_type (parent); | |
7550 | ||
7551 | if (parent[0] && !extended) | |
7552 | return MATCH_ERROR; | |
7553 | ||
e7303e85 | 7554 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7555 | { |
7556 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7557 | return MATCH_ERROR; | |
7558 | } | |
7559 | ||
7560 | m = gfc_match (" %n%t", name); | |
7561 | if (m != MATCH_YES) | |
7562 | return m; | |
7563 | ||
e9c06563 TB |
7564 | /* Make sure the name is not the name of an intrinsic type. */ |
7565 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7566 | { |
636dff67 SK |
7567 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7568 | "type", name); | |
6de9cd9a DN |
7569 | return MATCH_ERROR; |
7570 | } | |
7571 | ||
c3f34952 | 7572 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
7573 | return MATCH_ERROR; |
7574 | ||
c3f34952 | 7575 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a DN |
7576 | { |
7577 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c3f34952 TB |
7578 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7579 | return MATCH_ERROR; | |
7580 | } | |
7581 | ||
7582 | if (!gensym->attr.generic | |
524af0d6 | 7583 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
7584 | return MATCH_ERROR; |
7585 | ||
7586 | if (!gensym->attr.function | |
524af0d6 | 7587 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
7588 | return MATCH_ERROR; |
7589 | ||
7590 | sym = gfc_find_dt_in_generic (gensym); | |
7591 | ||
7592 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7593 | { | |
7594 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7595 | "defined", sym->name); | |
6de9cd9a DN |
7596 | return MATCH_ERROR; |
7597 | } | |
7598 | ||
c3f34952 TB |
7599 | if (!sym) |
7600 | { | |
7601 | /* Use upper case to save the actual derived-type symbol. */ | |
7602 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7603 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7604 | &gensym->name[1]), NULL, &sym); | |
7605 | sym->name = gfc_get_string (gensym->name); | |
7606 | head = gensym->generic; | |
7607 | intr = gfc_get_interface (); | |
7608 | intr->sym = sym; | |
7609 | intr->where = gfc_current_locus; | |
7610 | intr->sym->declared_at = gfc_current_locus; | |
7611 | intr->next = head; | |
7612 | gensym->generic = intr; | |
7613 | gensym->attr.if_source = IFSRC_DECL; | |
7614 | } | |
7615 | ||
6de9cd9a DN |
7616 | /* The symbol may already have the derived attribute without the |
7617 | components. The ways this can happen is via a function | |
7618 | definition, an INTRINSIC statement or a subtype in another | |
7619 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 7620 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 7621 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 7622 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
7623 | return MATCH_ERROR; |
7624 | ||
6de9cd9a | 7625 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 7626 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 7627 | return MATCH_ERROR; |
c3f34952 TB |
7628 | else if (sym->attr.access == ACCESS_UNKNOWN |
7629 | && gensym->attr.access != ACCESS_UNKNOWN | |
524af0d6 JB |
7630 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
7631 | sym->name, NULL)) | |
c3f34952 TB |
7632 | return MATCH_ERROR; |
7633 | ||
7634 | if (sym->attr.access != ACCESS_UNKNOWN | |
7635 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7636 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 7637 | |
a8b3b0b6 CR |
7638 | /* See if the derived type was labeled as bind(c). */ |
7639 | if (attr.is_bind_c != 0) | |
7640 | sym->attr.is_bind_c = attr.is_bind_c; | |
7641 | ||
34523524 DK |
7642 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7643 | if (!sym->f2k_derived) | |
7644 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 7645 | |
7d1f1e61 PT |
7646 | if (extended && !sym->components) |
7647 | { | |
7648 | gfc_component *p; | |
7649 | gfc_symtree *st; | |
7650 | ||
7651 | /* Add the extended derived type as the first component. */ | |
7652 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
7653 | extended->refs++; |
7654 | gfc_set_sym_referenced (extended); | |
7655 | ||
7656 | p->ts.type = BT_DERIVED; | |
bc21d315 | 7657 | p->ts.u.derived = extended; |
7d1f1e61 | 7658 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 7659 | |
7c1dab0d JW |
7660 | /* Set extension level. */ |
7661 | if (extended->attr.extension == 255) | |
7662 | { | |
7663 | /* Since the extension field is 8 bit wide, we can only have | |
7664 | up to 255 extension levels. */ | |
7665 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7666 | extended->name, &extended->declared_at); | |
7667 | return MATCH_ERROR; | |
7668 | } | |
7669 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
7670 | |
7671 | /* Provide the links between the extended type and its extension. */ | |
7672 | if (!extended->f2k_derived) | |
7673 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7674 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7675 | st->n.sym = sym; | |
7676 | } | |
7677 | ||
7c1dab0d JW |
7678 | if (!sym->hash_value) |
7679 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 7680 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 7681 | |
52f49934 DK |
7682 | /* Take over the ABSTRACT attribute. */ |
7683 | sym->attr.abstract = attr.abstract; | |
7684 | ||
6de9cd9a DN |
7685 | gfc_new_block = sym; |
7686 | ||
7687 | return MATCH_YES; | |
7688 | } | |
83d890b9 AL |
7689 | |
7690 | ||
f5acf0f2 | 7691 | /* Cray Pointees can be declared as: |
b3aefde2 | 7692 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 7693 | |
32e8bb8e | 7694 | match |
83d890b9 AL |
7695 | gfc_mod_pointee_as (gfc_array_spec *as) |
7696 | { | |
7697 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7698 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 7699 | as->cp_was_assumed = true; |
83d890b9 AL |
7700 | else if (as->type == AS_ASSUMED_SHAPE) |
7701 | { | |
7702 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7703 | return MATCH_ERROR; | |
7704 | } | |
7705 | return MATCH_YES; | |
7706 | } | |
25d8f0a2 TS |
7707 | |
7708 | ||
f5acf0f2 PT |
7709 | /* Match the enum definition statement, here we are trying to match |
7710 | the first line of enum definition statement. | |
25d8f0a2 TS |
7711 | Returns MATCH_YES if match is found. */ |
7712 | ||
7713 | match | |
7714 | gfc_match_enum (void) | |
7715 | { | |
7716 | match m; | |
f5acf0f2 | 7717 | |
25d8f0a2 TS |
7718 | m = gfc_match_eos (); |
7719 | if (m != MATCH_YES) | |
7720 | return m; | |
7721 | ||
524af0d6 | 7722 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
7723 | return MATCH_ERROR; |
7724 | ||
7725 | return MATCH_YES; | |
7726 | } | |
7727 | ||
7728 | ||
31224396 SK |
7729 | /* Returns an initializer whose value is one higher than the value of the |
7730 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7731 | initializers value will be set to zero. The initializer's kind | |
7732 | will be set to gfc_c_int_kind. | |
7733 | ||
7734 | If -fshort-enums is given, the appropriate kind will be selected | |
7735 | later after all enumerators have been parsed. A warning is issued | |
7736 | here if an initializer exceeds gfc_c_int_kind. */ | |
7737 | ||
7738 | static gfc_expr * | |
7739 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7740 | { | |
7741 | gfc_expr *result; | |
b7e75771 | 7742 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
7743 | |
7744 | mpz_init (result->value.integer); | |
7745 | ||
7746 | if (last_initializer != NULL) | |
7747 | { | |
7748 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7749 | result->where = last_initializer->where; | |
7750 | ||
7751 | if (gfc_check_integer_range (result->value.integer, | |
7752 | gfc_c_int_kind) != ARITH_OK) | |
7753 | { | |
7754 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7755 | return NULL; | |
7756 | } | |
7757 | } | |
7758 | else | |
7759 | { | |
7760 | /* Control comes here, if it's the very first enumerator and no | |
7761 | initializer has been given. It will be initialized to zero. */ | |
7762 | mpz_set_si (result->value.integer, 0); | |
7763 | } | |
7764 | ||
7765 | return result; | |
7766 | } | |
7767 | ||
7768 | ||
6133c68a TS |
7769 | /* Match a variable name with an optional initializer. When this |
7770 | subroutine is called, a variable is expected to be parsed next. | |
7771 | Depending on what is happening at the moment, updates either the | |
7772 | symbol table or the current interface. */ | |
7773 | ||
7774 | static match | |
7775 | enumerator_decl (void) | |
7776 | { | |
7777 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7778 | gfc_expr *initializer; | |
7779 | gfc_array_spec *as = NULL; | |
7780 | gfc_symbol *sym; | |
7781 | locus var_locus; | |
7782 | match m; | |
524af0d6 | 7783 | bool t; |
6133c68a TS |
7784 | locus old_locus; |
7785 | ||
7786 | initializer = NULL; | |
7787 | old_locus = gfc_current_locus; | |
7788 | ||
7789 | /* When we get here, we've just matched a list of attributes and | |
7790 | maybe a type and a double colon. The next thing we expect to see | |
7791 | is the name of the symbol. */ | |
7792 | m = gfc_match_name (name); | |
7793 | if (m != MATCH_YES) | |
7794 | goto cleanup; | |
7795 | ||
7796 | var_locus = gfc_current_locus; | |
7797 | ||
7798 | /* OK, we've successfully matched the declaration. Now put the | |
7799 | symbol in the current namespace. If we fail to create the symbol, | |
7800 | bail out. */ | |
524af0d6 | 7801 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
7802 | { |
7803 | m = MATCH_ERROR; | |
7804 | goto cleanup; | |
7805 | } | |
7806 | ||
7807 | /* The double colon must be present in order to have initializers. | |
7808 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7809 | if (colon_seen) | |
7810 | { | |
7811 | if (gfc_match_char ('=') == MATCH_YES) | |
7812 | { | |
7813 | m = gfc_match_init_expr (&initializer); | |
7814 | if (m == MATCH_NO) | |
7815 | { | |
7816 | gfc_error ("Expected an initialization expression at %C"); | |
7817 | m = MATCH_ERROR; | |
7818 | } | |
7819 | ||
7820 | if (m != MATCH_YES) | |
7821 | goto cleanup; | |
7822 | } | |
7823 | } | |
7824 | ||
7825 | /* If we do not have an initializer, the initialization value of the | |
7826 | previous enumerator (stored in last_initializer) is incremented | |
7827 | by 1 and is used to initialize the current enumerator. */ | |
7828 | if (initializer == NULL) | |
31224396 | 7829 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 7830 | |
6133c68a TS |
7831 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7832 | { | |
01e64c3d JJ |
7833 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7834 | &var_locus); | |
d51347f9 | 7835 | m = MATCH_ERROR; |
6133c68a TS |
7836 | goto cleanup; |
7837 | } | |
7838 | ||
7839 | /* Store this current initializer, for the next enumerator variable | |
7840 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7841 | use last_initializer below. */ | |
7842 | last_initializer = initializer; | |
7843 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7844 | ||
7845 | /* Maintain enumerator history. */ | |
7846 | gfc_find_symbol (name, NULL, 0, &sym); | |
7847 | create_enum_history (sym, last_initializer); | |
7848 | ||
524af0d6 | 7849 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
7850 | |
7851 | cleanup: | |
7852 | /* Free stuff up and return. */ | |
7853 | gfc_free_expr (initializer); | |
7854 | ||
7855 | return m; | |
7856 | } | |
7857 | ||
7858 | ||
66e4ab31 | 7859 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
7860 | |
7861 | match | |
7862 | gfc_match_enumerator_def (void) | |
7863 | { | |
7864 | match m; | |
524af0d6 | 7865 | bool t; |
d51347f9 | 7866 | |
25d8f0a2 | 7867 | gfc_clear_ts (¤t_ts); |
d51347f9 | 7868 | |
25d8f0a2 TS |
7869 | m = gfc_match (" enumerator"); |
7870 | if (m != MATCH_YES) | |
7871 | return m; | |
6133c68a TS |
7872 | |
7873 | m = gfc_match (" :: "); | |
7874 | if (m == MATCH_ERROR) | |
7875 | return m; | |
7876 | ||
7877 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 7878 | |
25d8f0a2 TS |
7879 | if (gfc_current_state () != COMP_ENUM) |
7880 | { | |
7881 | gfc_error ("ENUM definition statement expected before %C"); | |
7882 | gfc_free_enum_history (); | |
7883 | return MATCH_ERROR; | |
7884 | } | |
7885 | ||
7886 | (¤t_ts)->type = BT_INTEGER; | |
7887 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 7888 | |
6133c68a TS |
7889 | gfc_clear_attr (¤t_attr); |
7890 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 7891 | if (!t) |
25d8f0a2 | 7892 | { |
6133c68a | 7893 | m = MATCH_ERROR; |
25d8f0a2 TS |
7894 | goto cleanup; |
7895 | } | |
7896 | ||
25d8f0a2 TS |
7897 | for (;;) |
7898 | { | |
6133c68a | 7899 | m = enumerator_decl (); |
25d8f0a2 | 7900 | if (m == MATCH_ERROR) |
01e64c3d JJ |
7901 | { |
7902 | gfc_free_enum_history (); | |
7903 | goto cleanup; | |
7904 | } | |
25d8f0a2 TS |
7905 | if (m == MATCH_NO) |
7906 | break; | |
7907 | ||
7908 | if (gfc_match_eos () == MATCH_YES) | |
7909 | goto cleanup; | |
7910 | if (gfc_match_char (',') != MATCH_YES) | |
7911 | break; | |
7912 | } | |
7913 | ||
7914 | if (gfc_current_state () == COMP_ENUM) | |
7915 | { | |
7916 | gfc_free_enum_history (); | |
7917 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7918 | m = MATCH_ERROR; | |
7919 | } | |
7920 | ||
7921 | cleanup: | |
7922 | gfc_free_array_spec (current_as); | |
7923 | current_as = NULL; | |
7924 | return m; | |
7925 | ||
7926 | } | |
7927 | ||
f6fad28e | 7928 | |
30b608eb DK |
7929 | /* Match binding attributes. */ |
7930 | ||
7931 | static match | |
713485cc | 7932 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
7933 | { |
7934 | bool found_passing = false; | |
713485cc | 7935 | bool seen_ptr = false; |
90661f26 | 7936 | match m = MATCH_YES; |
30b608eb | 7937 | |
eea58adb | 7938 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
7939 | this case the defaults are in there. */ |
7940 | ba->access = ACCESS_UNKNOWN; | |
7941 | ba->pass_arg = NULL; | |
7942 | ba->pass_arg_num = 0; | |
7943 | ba->nopass = 0; | |
7944 | ba->non_overridable = 0; | |
b0e5fa94 | 7945 | ba->deferred = 0; |
90661f26 | 7946 | ba->ppc = ppc; |
30b608eb DK |
7947 | |
7948 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
7949 | m = gfc_match_char (','); |
7950 | if (m == MATCH_NO) | |
7951 | goto done; | |
30b608eb DK |
7952 | |
7953 | do | |
7954 | { | |
e157f736 DK |
7955 | /* Access specifier. */ |
7956 | ||
7957 | m = gfc_match (" public"); | |
30b608eb DK |
7958 | if (m == MATCH_ERROR) |
7959 | goto error; | |
7960 | if (m == MATCH_YES) | |
7961 | { | |
e157f736 | 7962 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7963 | { |
e157f736 | 7964 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7965 | goto error; |
7966 | } | |
7967 | ||
e157f736 | 7968 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
7969 | continue; |
7970 | } | |
7971 | ||
e157f736 | 7972 | m = gfc_match (" private"); |
30b608eb DK |
7973 | if (m == MATCH_ERROR) |
7974 | goto error; | |
7975 | if (m == MATCH_YES) | |
7976 | { | |
e157f736 | 7977 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7978 | { |
e157f736 | 7979 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7980 | goto error; |
7981 | } | |
7982 | ||
e157f736 | 7983 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
7984 | continue; |
7985 | } | |
7986 | ||
e157f736 DK |
7987 | /* If inside GENERIC, the following is not allowed. */ |
7988 | if (!generic) | |
30b608eb | 7989 | { |
30b608eb | 7990 | |
e157f736 DK |
7991 | /* NOPASS flag. */ |
7992 | m = gfc_match (" nopass"); | |
7993 | if (m == MATCH_ERROR) | |
7994 | goto error; | |
7995 | if (m == MATCH_YES) | |
30b608eb | 7996 | { |
e157f736 DK |
7997 | if (found_passing) |
7998 | { | |
7999 | gfc_error ("Binding attributes already specify passing," | |
8000 | " illegal NOPASS at %C"); | |
8001 | goto error; | |
8002 | } | |
8003 | ||
8004 | found_passing = true; | |
8005 | ba->nopass = 1; | |
8006 | continue; | |
30b608eb DK |
8007 | } |
8008 | ||
e157f736 DK |
8009 | /* PASS possibly including argument. */ |
8010 | m = gfc_match (" pass"); | |
8011 | if (m == MATCH_ERROR) | |
8012 | goto error; | |
8013 | if (m == MATCH_YES) | |
30b608eb | 8014 | { |
e157f736 DK |
8015 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8016 | ||
8017 | if (found_passing) | |
8018 | { | |
8019 | gfc_error ("Binding attributes already specify passing," | |
8020 | " illegal PASS at %C"); | |
8021 | goto error; | |
8022 | } | |
8023 | ||
8024 | m = gfc_match (" ( %n )", arg); | |
8025 | if (m == MATCH_ERROR) | |
8026 | goto error; | |
8027 | if (m == MATCH_YES) | |
90661f26 | 8028 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
8029 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8030 | ||
8031 | found_passing = true; | |
8032 | ba->nopass = 0; | |
8033 | continue; | |
30b608eb DK |
8034 | } |
8035 | ||
713485cc JW |
8036 | if (ppc) |
8037 | { | |
8038 | /* POINTER flag. */ | |
8039 | m = gfc_match (" pointer"); | |
8040 | if (m == MATCH_ERROR) | |
8041 | goto error; | |
8042 | if (m == MATCH_YES) | |
8043 | { | |
8044 | if (seen_ptr) | |
8045 | { | |
8046 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8047 | goto error; | |
8048 | } | |
8049 | ||
8050 | seen_ptr = true; | |
713485cc JW |
8051 | continue; |
8052 | } | |
8053 | } | |
8054 | else | |
8055 | { | |
8056 | /* NON_OVERRIDABLE flag. */ | |
8057 | m = gfc_match (" non_overridable"); | |
8058 | if (m == MATCH_ERROR) | |
8059 | goto error; | |
8060 | if (m == MATCH_YES) | |
8061 | { | |
8062 | if (ba->non_overridable) | |
8063 | { | |
8064 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8065 | goto error; | |
8066 | } | |
8067 | ||
8068 | ba->non_overridable = 1; | |
8069 | continue; | |
8070 | } | |
8071 | ||
8072 | /* DEFERRED flag. */ | |
8073 | m = gfc_match (" deferred"); | |
8074 | if (m == MATCH_ERROR) | |
8075 | goto error; | |
8076 | if (m == MATCH_YES) | |
8077 | { | |
8078 | if (ba->deferred) | |
8079 | { | |
8080 | gfc_error ("Duplicate DEFERRED at %C"); | |
8081 | goto error; | |
8082 | } | |
8083 | ||
8084 | ba->deferred = 1; | |
8085 | continue; | |
8086 | } | |
8087 | } | |
8088 | ||
30b608eb DK |
8089 | } |
8090 | ||
8091 | /* Nothing matching found. */ | |
e157f736 DK |
8092 | if (generic) |
8093 | gfc_error ("Expected access-specifier at %C"); | |
8094 | else | |
8095 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
8096 | goto error; |
8097 | } | |
8098 | while (gfc_match_char (',') == MATCH_YES); | |
8099 | ||
b0e5fa94 DK |
8100 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8101 | if (ba->non_overridable && ba->deferred) | |
8102 | { | |
8103 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8104 | goto error; | |
8105 | } | |
8106 | ||
90661f26 JW |
8107 | m = MATCH_YES; |
8108 | ||
8109 | done: | |
e157f736 DK |
8110 | if (ba->access == ACCESS_UNKNOWN) |
8111 | ba->access = gfc_typebound_default_access; | |
8112 | ||
713485cc JW |
8113 | if (ppc && !seen_ptr) |
8114 | { | |
8115 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8116 | " at %C"); | |
8117 | goto error; | |
8118 | } | |
8119 | ||
90661f26 | 8120 | return m; |
30b608eb DK |
8121 | |
8122 | error: | |
30b608eb DK |
8123 | return MATCH_ERROR; |
8124 | } | |
8125 | ||
8126 | ||
8127 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8128 | ||
8129 | static match | |
8130 | match_procedure_in_type (void) | |
8131 | { | |
8132 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8133 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 8134 | char* target = NULL, *ifc = NULL; |
3e15518b | 8135 | gfc_typebound_proc tb; |
30b608eb DK |
8136 | bool seen_colons; |
8137 | bool seen_attrs; | |
8138 | match m; | |
8139 | gfc_symtree* stree; | |
8140 | gfc_namespace* ns; | |
8141 | gfc_symbol* block; | |
1be17993 | 8142 | int num; |
30b608eb DK |
8143 | |
8144 | /* Check current state. */ | |
8145 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8146 | block = gfc_state_stack->previous->sym; | |
8147 | gcc_assert (block); | |
8148 | ||
b0e5fa94 | 8149 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
8150 | if (gfc_match (" (") == MATCH_YES) |
8151 | { | |
b0e5fa94 DK |
8152 | m = gfc_match_name (target_buf); |
8153 | if (m == MATCH_ERROR) | |
8154 | return m; | |
8155 | if (m != MATCH_YES) | |
8156 | { | |
8157 | gfc_error ("Interface-name expected after '(' at %C"); | |
8158 | return MATCH_ERROR; | |
8159 | } | |
8160 | ||
8161 | if (gfc_match (" )") != MATCH_YES) | |
8162 | { | |
8163 | gfc_error ("')' expected at %C"); | |
8164 | return MATCH_ERROR; | |
8165 | } | |
8166 | ||
1be17993 | 8167 | ifc = target_buf; |
30b608eb DK |
8168 | } |
8169 | ||
8170 | /* Construct the data structure. */ | |
ff5b6492 | 8171 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8172 | tb.where = gfc_current_locus; |
30b608eb DK |
8173 | |
8174 | /* Match binding attributes. */ | |
3e15518b | 8175 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8176 | if (m == MATCH_ERROR) |
8177 | return m; | |
8178 | seen_attrs = (m == MATCH_YES); | |
8179 | ||
1be17993 | 8180 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8181 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8182 | { |
8183 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8184 | return MATCH_ERROR; | |
8185 | } | |
3e15518b | 8186 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8187 | { |
8188 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8189 | return MATCH_ERROR; | |
8190 | } | |
8191 | ||
30b608eb DK |
8192 | /* Match the colons. */ |
8193 | m = gfc_match (" ::"); | |
8194 | if (m == MATCH_ERROR) | |
8195 | return m; | |
8196 | seen_colons = (m == MATCH_YES); | |
8197 | if (seen_attrs && !seen_colons) | |
8198 | { | |
8199 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8200 | return MATCH_ERROR; | |
8201 | } | |
8202 | ||
f5acf0f2 | 8203 | /* Match the binding names. */ |
1be17993 | 8204 | for(num=1;;num++) |
30b608eb | 8205 | { |
1be17993 JW |
8206 | m = gfc_match_name (name); |
8207 | if (m == MATCH_ERROR) | |
8208 | return m; | |
8209 | if (m == MATCH_NO) | |
b0e5fa94 | 8210 | { |
1be17993 | 8211 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8212 | return MATCH_ERROR; |
8213 | } | |
8214 | ||
524af0d6 | 8215 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 8216 | return MATCH_ERROR; |
30b608eb | 8217 | |
1be17993 JW |
8218 | /* Try to match the '=> target', if it's there. */ |
8219 | target = ifc; | |
8220 | m = gfc_match (" =>"); | |
30b608eb DK |
8221 | if (m == MATCH_ERROR) |
8222 | return m; | |
1be17993 | 8223 | if (m == MATCH_YES) |
30b608eb | 8224 | { |
3e15518b | 8225 | if (tb.deferred) |
1be17993 JW |
8226 | { |
8227 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8228 | return MATCH_ERROR; | |
8229 | } | |
8230 | ||
8231 | if (!seen_colons) | |
8232 | { | |
8233 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8234 | " at %C"); | |
8235 | return MATCH_ERROR; | |
8236 | } | |
8237 | ||
8238 | m = gfc_match_name (target_buf); | |
8239 | if (m == MATCH_ERROR) | |
8240 | return m; | |
8241 | if (m == MATCH_NO) | |
8242 | { | |
8243 | gfc_error ("Expected binding target after '=>' at %C"); | |
8244 | return MATCH_ERROR; | |
8245 | } | |
8246 | target = target_buf; | |
30b608eb | 8247 | } |
30b608eb | 8248 | |
1be17993 JW |
8249 | /* If no target was found, it has the same name as the binding. */ |
8250 | if (!target) | |
8251 | target = name; | |
30b608eb | 8252 | |
1be17993 JW |
8253 | /* Get the namespace to insert the symbols into. */ |
8254 | ns = block->f2k_derived; | |
8255 | gcc_assert (ns); | |
30b608eb | 8256 | |
1be17993 | 8257 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8258 | if (tb.deferred && !block->attr.abstract) |
1be17993 JW |
8259 | { |
8260 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8261 | "is not ABSTRACT", block->name); | |
8262 | return MATCH_ERROR; | |
8263 | } | |
30b608eb | 8264 | |
1be17993 | 8265 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 8266 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
8267 | be already there but then typebound is still NULL. */ |
8268 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8269 | if (stree && stree->n.tb) |
1be17993 JW |
8270 | { |
8271 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8272 | "the derived type '%s' at %C", name, block->name); | |
8273 | return MATCH_ERROR; | |
8274 | } | |
b0e5fa94 | 8275 | |
1be17993 | 8276 | /* Insert it and set attributes. */ |
30b608eb | 8277 | |
9f23af48 MM |
8278 | if (!stree) |
8279 | { | |
8280 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8281 | gcc_assert (stree); | |
8282 | } | |
3e15518b | 8283 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8284 | |
3e15518b JW |
8285 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8286 | false)) | |
1be17993 | 8287 | return MATCH_ERROR; |
3e15518b | 8288 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f5acf0f2 | 8289 | |
1be17993 JW |
8290 | if (gfc_match_eos () == MATCH_YES) |
8291 | return MATCH_YES; | |
8292 | if (gfc_match_char (',') != MATCH_YES) | |
8293 | goto syntax; | |
e34ccb4c | 8294 | } |
30b608eb | 8295 | |
1be17993 JW |
8296 | syntax: |
8297 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8298 | return MATCH_ERROR; | |
30b608eb DK |
8299 | } |
8300 | ||
8301 | ||
e157f736 DK |
8302 | /* Match a GENERIC procedure binding inside a derived type. */ |
8303 | ||
8304 | match | |
8305 | gfc_match_generic (void) | |
8306 | { | |
8307 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8308 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8309 | gfc_symbol* block; |
8310 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8311 | gfc_typebound_proc* tb; | |
e157f736 | 8312 | gfc_namespace* ns; |
94747289 DK |
8313 | interface_type op_type; |
8314 | gfc_intrinsic_op op; | |
e157f736 DK |
8315 | match m; |
8316 | ||
8317 | /* Check current state. */ | |
8318 | if (gfc_current_state () == COMP_DERIVED) | |
8319 | { | |
8320 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8321 | return MATCH_ERROR; | |
8322 | } | |
8323 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8324 | return MATCH_NO; | |
8325 | block = gfc_state_stack->previous->sym; | |
8326 | ns = block->f2k_derived; | |
8327 | gcc_assert (block && ns); | |
8328 | ||
ff5b6492 MM |
8329 | memset (&tbattr, 0, sizeof (tbattr)); |
8330 | tbattr.where = gfc_current_locus; | |
8331 | ||
e157f736 | 8332 | /* See if we get an access-specifier. */ |
713485cc | 8333 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8334 | if (m == MATCH_ERROR) |
8335 | goto error; | |
8336 | ||
8337 | /* Now the colons, those are required. */ | |
8338 | if (gfc_match (" ::") != MATCH_YES) | |
8339 | { | |
8340 | gfc_error ("Expected '::' at %C"); | |
8341 | goto error; | |
8342 | } | |
8343 | ||
94747289 DK |
8344 | /* Match the binding name; depending on type (operator / generic) format |
8345 | it for future error messages into bind_name. */ | |
f5acf0f2 | 8346 | |
94747289 | 8347 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
8348 | if (m == MATCH_ERROR) |
8349 | return MATCH_ERROR; | |
8350 | if (m == MATCH_NO) | |
8351 | { | |
94747289 | 8352 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8353 | goto error; |
8354 | } | |
8355 | ||
94747289 | 8356 | switch (op_type) |
e157f736 | 8357 | { |
94747289 DK |
8358 | case INTERFACE_GENERIC: |
8359 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8360 | break; | |
f5acf0f2 | 8361 | |
94747289 DK |
8362 | case INTERFACE_USER_OP: |
8363 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8364 | break; | |
f5acf0f2 | 8365 | |
94747289 DK |
8366 | case INTERFACE_INTRINSIC_OP: |
8367 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8368 | gfc_op2string (op)); | |
8369 | break; | |
8370 | ||
8371 | default: | |
8372 | gcc_unreachable (); | |
8373 | } | |
e34ccb4c | 8374 | |
94747289 DK |
8375 | /* Match the required =>. */ |
8376 | if (gfc_match (" =>") != MATCH_YES) | |
8377 | { | |
8378 | gfc_error ("Expected '=>' at %C"); | |
8379 | goto error; | |
8380 | } | |
f5acf0f2 | 8381 | |
94747289 DK |
8382 | /* Try to find existing GENERIC binding with this name / for this operator; |
8383 | if there is something, check that it is another GENERIC and then extend | |
8384 | it rather than building a new node. Otherwise, create it and put it | |
8385 | at the right position. */ | |
8386 | ||
8387 | switch (op_type) | |
8388 | { | |
8389 | case INTERFACE_USER_OP: | |
8390 | case INTERFACE_GENERIC: | |
8391 | { | |
8392 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8393 | gfc_symtree* st; | |
8394 | ||
8395 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8396 | if (st) | |
8397 | { | |
8398 | tb = st->n.tb; | |
8399 | gcc_assert (tb); | |
8400 | } | |
8401 | else | |
8402 | tb = NULL; | |
8403 | ||
8404 | break; | |
8405 | } | |
8406 | ||
8407 | case INTERFACE_INTRINSIC_OP: | |
8408 | tb = ns->tb_op[op]; | |
8409 | break; | |
8410 | ||
8411 | default: | |
8412 | gcc_unreachable (); | |
8413 | } | |
8414 | ||
8415 | if (tb) | |
8416 | { | |
e34ccb4c | 8417 | if (!tb->is_generic) |
e157f736 | 8418 | { |
94747289 | 8419 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 DK |
8420 | gfc_error ("There's already a non-generic procedure with binding name" |
8421 | " '%s' for the derived type '%s' at %C", | |
94747289 | 8422 | bind_name, block->name); |
e157f736 DK |
8423 | goto error; |
8424 | } | |
8425 | ||
e157f736 DK |
8426 | if (tb->access != tbattr.access) |
8427 | { | |
8428 | gfc_error ("Binding at %C must have the same access as already" | |
94747289 | 8429 | " defined binding '%s'", bind_name); |
e157f736 DK |
8430 | goto error; |
8431 | } | |
8432 | } | |
8433 | else | |
8434 | { | |
3e15518b | 8435 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8436 | tb->where = gfc_current_locus; |
8437 | tb->access = tbattr.access; | |
8438 | tb->is_generic = 1; | |
8439 | tb->u.generic = NULL; | |
94747289 DK |
8440 | |
8441 | switch (op_type) | |
8442 | { | |
8443 | case INTERFACE_GENERIC: | |
8444 | case INTERFACE_USER_OP: | |
8445 | { | |
8446 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8447 | gfc_symtree* st; | |
8448 | ||
8449 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8450 | name); | |
8451 | gcc_assert (st); | |
8452 | st->n.tb = tb; | |
8453 | ||
8454 | break; | |
8455 | } | |
f5acf0f2 | 8456 | |
94747289 DK |
8457 | case INTERFACE_INTRINSIC_OP: |
8458 | ns->tb_op[op] = tb; | |
8459 | break; | |
8460 | ||
8461 | default: | |
8462 | gcc_unreachable (); | |
8463 | } | |
e157f736 DK |
8464 | } |
8465 | ||
8466 | /* Now, match all following names as specific targets. */ | |
8467 | do | |
8468 | { | |
8469 | gfc_symtree* target_st; | |
8470 | gfc_tbp_generic* target; | |
8471 | ||
8472 | m = gfc_match_name (name); | |
8473 | if (m == MATCH_ERROR) | |
8474 | goto error; | |
8475 | if (m == MATCH_NO) | |
8476 | { | |
8477 | gfc_error ("Expected specific binding name at %C"); | |
8478 | goto error; | |
8479 | } | |
8480 | ||
e34ccb4c | 8481 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8482 | |
8483 | /* See if this is a duplicate specification. */ | |
8484 | for (target = tb->u.generic; target; target = target->next) | |
8485 | if (target_st == target->specific_st) | |
8486 | { | |
8487 | gfc_error ("'%s' already defined as specific binding for the" | |
94747289 | 8488 | " generic '%s' at %C", name, bind_name); |
e157f736 DK |
8489 | goto error; |
8490 | } | |
8491 | ||
e157f736 DK |
8492 | target = gfc_get_tbp_generic (); |
8493 | target->specific_st = target_st; | |
8494 | target->specific = NULL; | |
8495 | target->next = tb->u.generic; | |
218e1228 TB |
8496 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8497 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
8498 | tb->u.generic = target; |
8499 | } | |
8500 | while (gfc_match (" ,") == MATCH_YES); | |
8501 | ||
8502 | /* Here should be the end. */ | |
8503 | if (gfc_match_eos () != MATCH_YES) | |
8504 | { | |
8505 | gfc_error ("Junk after GENERIC binding at %C"); | |
8506 | goto error; | |
8507 | } | |
8508 | ||
8509 | return MATCH_YES; | |
8510 | ||
8511 | error: | |
8512 | return MATCH_ERROR; | |
8513 | } | |
8514 | ||
8515 | ||
34523524 DK |
8516 | /* Match a FINAL declaration inside a derived type. */ |
8517 | ||
8518 | match | |
8519 | gfc_match_final_decl (void) | |
8520 | { | |
8521 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8522 | gfc_symbol* sym; | |
8523 | match m; | |
8524 | gfc_namespace* module_ns; | |
8525 | bool first, last; | |
30b608eb | 8526 | gfc_symbol* block; |
34523524 | 8527 | |
33344e0f JW |
8528 | if (gfc_current_form == FORM_FREE) |
8529 | { | |
8530 | char c = gfc_peek_ascii_char (); | |
8531 | if (!gfc_is_whitespace (c) && c != ':') | |
8532 | return MATCH_NO; | |
8533 | } | |
f5acf0f2 | 8534 | |
30b608eb | 8535 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8536 | { |
33344e0f JW |
8537 | if (gfc_current_form == FORM_FIXED) |
8538 | return MATCH_NO; | |
8539 | ||
34523524 | 8540 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8541 | "CONTAINS section"); |
34523524 DK |
8542 | return MATCH_ERROR; |
8543 | } | |
8544 | ||
30b608eb DK |
8545 | block = gfc_state_stack->previous->sym; |
8546 | gcc_assert (block); | |
34523524 | 8547 | |
30b608eb DK |
8548 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8549 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8550 | { |
8551 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8552 | " specification part of a MODULE"); | |
8553 | return MATCH_ERROR; | |
8554 | } | |
8555 | ||
8556 | module_ns = gfc_current_ns; | |
8557 | gcc_assert (module_ns); | |
8558 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8559 | ||
8560 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8561 | if (gfc_match (" ::") == MATCH_ERROR) | |
8562 | return MATCH_ERROR; | |
8563 | ||
8564 | /* Match the sequence of procedure names. */ | |
8565 | first = true; | |
8566 | last = false; | |
8567 | do | |
8568 | { | |
8569 | gfc_finalizer* f; | |
8570 | ||
8571 | if (first && gfc_match_eos () == MATCH_YES) | |
8572 | { | |
8573 | gfc_error ("Empty FINAL at %C"); | |
8574 | return MATCH_ERROR; | |
8575 | } | |
8576 | ||
8577 | m = gfc_match_name (name); | |
8578 | if (m == MATCH_NO) | |
8579 | { | |
8580 | gfc_error ("Expected module procedure name at %C"); | |
8581 | return MATCH_ERROR; | |
8582 | } | |
8583 | else if (m != MATCH_YES) | |
8584 | return MATCH_ERROR; | |
8585 | ||
8586 | if (gfc_match_eos () == MATCH_YES) | |
8587 | last = true; | |
8588 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8589 | { | |
8590 | gfc_error ("Expected ',' at %C"); | |
8591 | return MATCH_ERROR; | |
8592 | } | |
8593 | ||
8594 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8595 | { | |
8596 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8597 | return MATCH_ERROR; | |
8598 | } | |
8599 | ||
8600 | /* Mark the symbol as module procedure. */ | |
8601 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 8602 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
8603 | return MATCH_ERROR; |
8604 | ||
8605 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 8606 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 8607 | if (f->proc_sym == sym) |
34523524 DK |
8608 | { |
8609 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8610 | name); | |
8611 | return MATCH_ERROR; | |
8612 | } | |
8613 | ||
8614 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 8615 | gcc_assert (block->f2k_derived); |
34523524 | 8616 | ++sym->refs; |
ece3f663 | 8617 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
8618 | f->proc_sym = sym; |
8619 | f->proc_tree = NULL; | |
34523524 | 8620 | f->where = gfc_current_locus; |
30b608eb DK |
8621 | f->next = block->f2k_derived->finalizers; |
8622 | block->f2k_derived->finalizers = f; | |
34523524 DK |
8623 | |
8624 | first = false; | |
8625 | } | |
8626 | while (!last); | |
8627 | ||
8628 | return MATCH_YES; | |
8629 | } | |
08a6b8e0 TB |
8630 | |
8631 | ||
8632 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
8633 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
8634 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8635 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8636 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8637 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8638 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
8639 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
8640 | }; |
8641 | ||
8642 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8643 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8644 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8645 | ||
8646 | TODO: We should support all GCC attributes using the same syntax for | |
8647 | the attribute list, i.e. the list in C | |
8648 | __attributes(( attribute-list )) | |
8649 | matches then | |
8650 | !GCC$ ATTRIBUTES attribute-list :: | |
8651 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8652 | saved into a TREE. | |
8653 | ||
8654 | As there is absolutely no risk of confusion, we should never return | |
8655 | MATCH_NO. */ | |
8656 | match | |
8657 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 8658 | { |
08a6b8e0 TB |
8659 | symbol_attribute attr; |
8660 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8661 | unsigned id; | |
8662 | gfc_symbol *sym; | |
8663 | match m; | |
8664 | ||
8665 | gfc_clear_attr (&attr); | |
8666 | for(;;) | |
8667 | { | |
8668 | char ch; | |
8669 | ||
8670 | if (gfc_match_name (name) != MATCH_YES) | |
8671 | return MATCH_ERROR; | |
8672 | ||
8673 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8674 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8675 | break; | |
8676 | ||
8677 | if (id == EXT_ATTR_LAST) | |
8678 | { | |
8679 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8680 | return MATCH_ERROR; | |
8681 | } | |
8682 | ||
524af0d6 | 8683 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
8684 | return MATCH_ERROR; |
8685 | ||
8686 | gfc_gobble_whitespace (); | |
8687 | ch = gfc_next_ascii_char (); | |
8688 | if (ch == ':') | |
8689 | { | |
8690 | /* This is the successful exit condition for the loop. */ | |
8691 | if (gfc_next_ascii_char () == ':') | |
8692 | break; | |
8693 | } | |
8694 | ||
8695 | if (ch == ',') | |
8696 | continue; | |
8697 | ||
8698 | goto syntax; | |
8699 | } | |
8700 | ||
8701 | if (gfc_match_eos () == MATCH_YES) | |
8702 | goto syntax; | |
8703 | ||
8704 | for(;;) | |
8705 | { | |
8706 | m = gfc_match_name (name); | |
8707 | if (m != MATCH_YES) | |
8708 | return m; | |
8709 | ||
8710 | if (find_special (name, &sym, true)) | |
8711 | return MATCH_ERROR; | |
f5acf0f2 | 8712 | |
08a6b8e0 TB |
8713 | sym->attr.ext_attr |= attr.ext_attr; |
8714 | ||
8715 | if (gfc_match_eos () == MATCH_YES) | |
8716 | break; | |
8717 | ||
8718 | if (gfc_match_char (',') != MATCH_YES) | |
8719 | goto syntax; | |
8720 | } | |
8721 | ||
8722 | return MATCH_YES; | |
8723 | ||
8724 | syntax: | |
8725 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8726 | return MATCH_ERROR; | |
8727 | } |