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Commit | Line | Data |
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6de9cd9a | 1 | /* Declaration statement matcher |
f4347334 | 2 | Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
636dff67 | 3 | Free Software Foundation, Inc. |
6de9cd9a DN |
4 | Contributed by Andy Vaught |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 10 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 11 | version. |
6de9cd9a | 12 | |
9fc4d79b TS |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 21 | |
6de9cd9a | 22 | #include "config.h" |
d22e4895 | 23 | #include "system.h" |
953bee7c | 24 | #include "coretypes.h" |
6de9cd9a DN |
25 | #include "gfortran.h" |
26 | #include "match.h" | |
27 | #include "parse.h" | |
cab129d1 | 28 | #include "flags.h" |
b7e75771 | 29 | #include "constructor.h" |
62603fae | 30 | #include "tree.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 | ||
9975a30b | 39 | static gfc_try 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 DK |
257 | /* Symbol should already have an associated type. */ |
258 | if (gfc_check_symbol_typed (sym, gfc_current_ns, | |
259 | false, gfc_current_locus) == FAILURE) | |
260 | return MATCH_ERROR; | |
261 | ||
636dff67 SK |
262 | if (!sym->attr.function && gfc_current_ns->parent |
263 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 264 | { |
4075a94e | 265 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
e25a0da3 | 266 | "statement at %C", sym->name); |
294fbfc8 TS |
267 | return MATCH_ERROR; |
268 | } | |
269 | ||
4075a94e | 270 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 271 | && sym->attr.in_common |
9717f7a1 | 272 | && gfc_notify_std (GFC_STD_GNU, "initialization of " |
636dff67 SK |
273 | "common block variable '%s' in DATA statement at %C", |
274 | sym->name) == FAILURE) | |
4075a94e | 275 | return MATCH_ERROR; |
294fbfc8 | 276 | |
7b901ac4 | 277 | if (gfc_add_data (&sym->attr, sym->name, &new_var->expr->where) == FAILURE) |
294fbfc8 TS |
278 | return MATCH_ERROR; |
279 | ||
280 | return MATCH_YES; | |
281 | } | |
282 | ||
283 | ||
284 | /* Match the top-level list of data variables. */ | |
285 | ||
286 | static match | |
636dff67 | 287 | top_var_list (gfc_data *d) |
294fbfc8 | 288 | { |
7b901ac4 | 289 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
290 | match m; |
291 | ||
292 | tail = NULL; | |
293 | ||
294 | for (;;) | |
295 | { | |
296 | m = var_element (&var); | |
297 | if (m == MATCH_NO) | |
298 | goto syntax; | |
299 | if (m == MATCH_ERROR) | |
300 | return MATCH_ERROR; | |
301 | ||
7b901ac4 KG |
302 | new_var = gfc_get_data_variable (); |
303 | *new_var = var; | |
294fbfc8 TS |
304 | |
305 | if (tail == NULL) | |
7b901ac4 | 306 | d->var = new_var; |
294fbfc8 | 307 | else |
7b901ac4 | 308 | tail->next = new_var; |
294fbfc8 | 309 | |
7b901ac4 | 310 | tail = new_var; |
294fbfc8 TS |
311 | |
312 | if (gfc_match_char ('/') == MATCH_YES) | |
313 | break; | |
314 | if (gfc_match_char (',') != MATCH_YES) | |
315 | goto syntax; | |
316 | } | |
317 | ||
318 | return MATCH_YES; | |
319 | ||
320 | syntax: | |
321 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 322 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
323 | return MATCH_ERROR; |
324 | } | |
325 | ||
326 | ||
327 | static match | |
636dff67 | 328 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
329 | { |
330 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 331 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
332 | gfc_expr *expr; |
333 | match m; | |
36d3fb4c | 334 | locus old_loc; |
294fbfc8 TS |
335 | |
336 | m = gfc_match_literal_constant (&expr, 1); | |
337 | if (m == MATCH_YES) | |
338 | { | |
339 | *result = expr; | |
340 | return MATCH_YES; | |
341 | } | |
342 | ||
343 | if (m == MATCH_ERROR) | |
344 | return MATCH_ERROR; | |
345 | ||
346 | m = gfc_match_null (result); | |
347 | if (m != MATCH_NO) | |
348 | return m; | |
349 | ||
36d3fb4c PT |
350 | old_loc = gfc_current_locus; |
351 | ||
352 | /* Should this be a structure component, try to match it | |
353 | before matching a name. */ | |
354 | m = gfc_match_rvalue (result); | |
355 | if (m == MATCH_ERROR) | |
356 | return m; | |
357 | ||
358 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
359 | { | |
360 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
361 | m = MATCH_ERROR; | |
362 | return m; | |
363 | } | |
364 | ||
365 | gfc_current_locus = old_loc; | |
366 | ||
294fbfc8 TS |
367 | m = gfc_match_name (name); |
368 | if (m != MATCH_YES) | |
369 | return m; | |
370 | ||
371 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
372 | return MATCH_ERROR; | |
373 | ||
c3f34952 TB |
374 | if (sym && sym->attr.generic) |
375 | dt_sym = gfc_find_dt_in_generic (sym); | |
376 | ||
294fbfc8 | 377 | if (sym == NULL |
c3f34952 TB |
378 | || (sym->attr.flavor != FL_PARAMETER |
379 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
294fbfc8 TS |
380 | { |
381 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
382 | name); | |
383 | return MATCH_ERROR; | |
384 | } | |
c3f34952 TB |
385 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
386 | return gfc_match_structure_constructor (dt_sym, result); | |
294fbfc8 | 387 | |
d46e0870 JD |
388 | /* Check to see if the value is an initialization array expression. */ |
389 | if (sym->value->expr_type == EXPR_ARRAY) | |
390 | { | |
391 | gfc_current_locus = old_loc; | |
392 | ||
393 | m = gfc_match_init_expr (result); | |
394 | if (m == MATCH_ERROR) | |
395 | return m; | |
396 | ||
397 | if (m == MATCH_YES) | |
398 | { | |
399 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
400 | m = MATCH_ERROR; | |
401 | ||
402 | if ((*result)->expr_type == EXPR_CONSTANT) | |
403 | return m; | |
404 | else | |
405 | { | |
406 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
407 | return MATCH_ERROR; | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
294fbfc8 TS |
412 | *result = gfc_copy_expr (sym->value); |
413 | return MATCH_YES; | |
414 | } | |
415 | ||
416 | ||
417 | /* Match a list of values in a DATA statement. The leading '/' has | |
418 | already been seen at this point. */ | |
419 | ||
420 | static match | |
636dff67 | 421 | top_val_list (gfc_data *data) |
294fbfc8 | 422 | { |
7b901ac4 | 423 | gfc_data_value *new_val, *tail; |
294fbfc8 | 424 | gfc_expr *expr; |
294fbfc8 TS |
425 | match m; |
426 | ||
427 | tail = NULL; | |
428 | ||
429 | for (;;) | |
430 | { | |
431 | m = match_data_constant (&expr); | |
432 | if (m == MATCH_NO) | |
433 | goto syntax; | |
434 | if (m == MATCH_ERROR) | |
435 | return MATCH_ERROR; | |
436 | ||
7b901ac4 KG |
437 | new_val = gfc_get_data_value (); |
438 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
439 | |
440 | if (tail == NULL) | |
7b901ac4 | 441 | data->value = new_val; |
294fbfc8 | 442 | else |
7b901ac4 | 443 | tail->next = new_val; |
294fbfc8 | 444 | |
7b901ac4 | 445 | tail = new_val; |
294fbfc8 TS |
446 | |
447 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
448 | { | |
449 | tail->expr = expr; | |
f2112868 | 450 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
451 | } |
452 | else | |
453 | { | |
f2112868 SK |
454 | if (expr->ts.type == BT_INTEGER) |
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 AL |
517 | /* Mark the variable as having appeared in a data statement. */ |
518 | if (gfc_add_data (&sym->attr, sym->name, &sym->declared_at) == FAILURE) | |
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 TB |
591 | |
592 | static void | |
593 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) | |
594 | { | |
595 | int i; | |
596 | ||
c62c6622 TB |
597 | gcc_assert (from->rank != -1 || to->corank == 0); |
598 | gcc_assert (to->rank != -1 || from->corank == 0); | |
599 | ||
d3a9eea2 TB |
600 | if (to->rank == 0 && from->rank > 0) |
601 | { | |
602 | to->rank = from->rank; | |
603 | to->type = from->type; | |
604 | to->cray_pointee = from->cray_pointee; | |
605 | to->cp_was_assumed = from->cp_was_assumed; | |
606 | ||
607 | for (i = 0; i < to->corank; i++) | |
608 | { | |
609 | to->lower[from->rank + i] = to->lower[i]; | |
610 | to->upper[from->rank + i] = to->upper[i]; | |
611 | } | |
612 | for (i = 0; i < from->rank; i++) | |
613 | { | |
614 | if (copy) | |
615 | { | |
616 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
617 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
618 | } | |
619 | else | |
620 | { | |
621 | to->lower[i] = from->lower[i]; | |
622 | to->upper[i] = from->upper[i]; | |
623 | } | |
624 | } | |
625 | } | |
626 | else if (to->corank == 0 && from->corank > 0) | |
627 | { | |
628 | to->corank = from->corank; | |
629 | to->cotype = from->cotype; | |
630 | ||
631 | for (i = 0; i < from->corank; i++) | |
632 | { | |
633 | if (copy) | |
634 | { | |
635 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
636 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
637 | } | |
638 | else | |
639 | { | |
640 | to->lower[to->rank + i] = from->lower[i]; | |
641 | to->upper[to->rank + i] = from->upper[i]; | |
642 | } | |
643 | } | |
644 | } | |
645 | } | |
646 | ||
647 | ||
6de9cd9a DN |
648 | /* Match an intent specification. Since this can only happen after an |
649 | INTENT word, a legal intent-spec must follow. */ | |
650 | ||
651 | static sym_intent | |
652 | match_intent_spec (void) | |
653 | { | |
654 | ||
655 | if (gfc_match (" ( in out )") == MATCH_YES) | |
656 | return INTENT_INOUT; | |
657 | if (gfc_match (" ( in )") == MATCH_YES) | |
658 | return INTENT_IN; | |
659 | if (gfc_match (" ( out )") == MATCH_YES) | |
660 | return INTENT_OUT; | |
661 | ||
662 | gfc_error ("Bad INTENT specification at %C"); | |
663 | return INTENT_UNKNOWN; | |
664 | } | |
665 | ||
666 | ||
667 | /* Matches a character length specification, which is either a | |
e69afb29 | 668 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
669 | |
670 | static match | |
e69afb29 | 671 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 672 | { |
cba28dad JD |
673 | match m; |
674 | ||
e69afb29 SK |
675 | *expr = NULL; |
676 | *deferred = false; | |
677 | ||
6de9cd9a | 678 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
679 | return MATCH_YES; |
680 | ||
681 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 682 | { |
9717f7a1 | 683 | if (gfc_notify_std (GFC_STD_F2003, "deferred type " |
e69afb29 SK |
684 | "parameter at %C") == FAILURE) |
685 | return MATCH_ERROR; | |
686 | ||
687 | *deferred = true; | |
688 | ||
6de9cd9a DN |
689 | return MATCH_YES; |
690 | } | |
691 | ||
cba28dad | 692 | m = gfc_match_expr (expr); |
f37e928c DK |
693 | |
694 | if (m == MATCH_YES | |
695 | && gfc_expr_check_typed (*expr, gfc_current_ns, false) == FAILURE) | |
696 | return MATCH_ERROR; | |
697 | ||
cba28dad JD |
698 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
699 | { | |
700 | if ((*expr)->value.function.actual | |
701 | && (*expr)->value.function.actual->expr->symtree) | |
702 | { | |
703 | gfc_expr *e; | |
704 | e = (*expr)->value.function.actual->expr; | |
705 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
706 | && e->expr_type == EXPR_VARIABLE) | |
707 | { | |
708 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
709 | goto syntax; | |
710 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
711 | && e->symtree->n.sym->ts.u.cl |
712 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
cba28dad JD |
713 | goto syntax; |
714 | } | |
715 | } | |
716 | } | |
717 | return m; | |
718 | ||
719 | syntax: | |
720 | gfc_error ("Conflict in attributes of function argument at %C"); | |
721 | return MATCH_ERROR; | |
6de9cd9a DN |
722 | } |
723 | ||
724 | ||
725 | /* A character length is a '*' followed by a literal integer or a | |
726 | char_len_param_value in parenthesis. */ | |
727 | ||
728 | static match | |
2767f2cc | 729 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolenscent_check) |
6de9cd9a | 730 | { |
5cf54585 | 731 | int length; |
6de9cd9a DN |
732 | match m; |
733 | ||
e69afb29 | 734 | *deferred = false; |
6de9cd9a DN |
735 | m = gfc_match_char ('*'); |
736 | if (m != MATCH_YES) | |
737 | return m; | |
738 | ||
5cf54585 | 739 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
740 | if (m == MATCH_ERROR) |
741 | return m; | |
742 | ||
743 | if (m == MATCH_YES) | |
744 | { | |
2767f2cc | 745 | if (obsolenscent_check |
9717f7a1 | 746 | && gfc_notify_std (GFC_STD_F95_OBS, |
2767f2cc | 747 | "Old-style character length at %C") == FAILURE) |
e2ab8b09 | 748 | return MATCH_ERROR; |
b7e75771 | 749 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
750 | return m; |
751 | } | |
752 | ||
753 | if (gfc_match_char ('(') == MATCH_NO) | |
754 | goto syntax; | |
755 | ||
e69afb29 | 756 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
757 | if (m != MATCH_YES && gfc_matching_function) |
758 | { | |
759 | gfc_undo_symbols (); | |
760 | m = MATCH_YES; | |
761 | } | |
762 | ||
6de9cd9a DN |
763 | if (m == MATCH_ERROR) |
764 | return m; | |
765 | if (m == MATCH_NO) | |
766 | goto syntax; | |
767 | ||
768 | if (gfc_match_char (')') == MATCH_NO) | |
769 | { | |
770 | gfc_free_expr (*expr); | |
771 | *expr = NULL; | |
772 | goto syntax; | |
773 | } | |
774 | ||
775 | return MATCH_YES; | |
776 | ||
777 | syntax: | |
778 | gfc_error ("Syntax error in character length specification at %C"); | |
779 | return MATCH_ERROR; | |
780 | } | |
781 | ||
782 | ||
9e35b386 EE |
783 | /* Special subroutine for finding a symbol. Check if the name is found |
784 | in the current name space. If not, and we're compiling a function or | |
785 | subroutine and the parent compilation unit is an interface, then check | |
786 | to see if the name we've been given is the name of the interface | |
787 | (located in another namespace). */ | |
6de9cd9a DN |
788 | |
789 | static int | |
08a6b8e0 | 790 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
791 | { |
792 | gfc_state_data *s; | |
08a6b8e0 | 793 | gfc_symtree *st; |
9e35b386 | 794 | int i; |
6de9cd9a | 795 | |
08a6b8e0 | 796 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 797 | if (i == 0) |
08a6b8e0 TB |
798 | { |
799 | *result = st ? st->n.sym : NULL; | |
800 | goto end; | |
801 | } | |
d51347f9 | 802 | |
6de9cd9a DN |
803 | if (gfc_current_state () != COMP_SUBROUTINE |
804 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 805 | goto end; |
6de9cd9a DN |
806 | |
807 | s = gfc_state_stack->previous; | |
808 | if (s == NULL) | |
9e35b386 | 809 | goto end; |
6de9cd9a DN |
810 | |
811 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 812 | goto end; |
6de9cd9a | 813 | if (s->sym == NULL) |
66e4ab31 | 814 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
815 | |
816 | if (strcmp (name, s->sym->name) == 0) | |
817 | { | |
818 | *result = s->sym; | |
819 | return 0; | |
820 | } | |
821 | ||
9e35b386 EE |
822 | end: |
823 | return i; | |
6de9cd9a DN |
824 | } |
825 | ||
826 | ||
827 | /* Special subroutine for getting a symbol node associated with a | |
828 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
829 | symbol is created in the parent using with symtree node in the | |
830 | child unit pointing to the symbol. If the current namespace has no | |
831 | parent, then the symbol is just created in the current unit. */ | |
832 | ||
833 | static int | |
636dff67 | 834 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
835 | { |
836 | gfc_symtree *st; | |
837 | gfc_symbol *sym; | |
a7ca4d8d | 838 | int rc = 0; |
6de9cd9a | 839 | |
1a492601 PT |
840 | /* Module functions have to be left in their own namespace because |
841 | they have potentially (almost certainly!) already been referenced. | |
842 | In this sense, they are rather like external functions. This is | |
843 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
844 | space is set to point to the master function, so that the fake | |
845 | result mechanism can work. */ | |
846 | if (module_fcn_entry) | |
6c12686b PT |
847 | { |
848 | /* Present if entry is declared to be a module procedure. */ | |
849 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 850 | |
6c12686b PT |
851 | if (*result == NULL) |
852 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 853 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
854 | && (*result)->ts.type == BT_UNKNOWN |
855 | && sym->attr.flavor == FL_UNKNOWN) | |
856 | /* Pick up the typespec for the entry, if declared in the function | |
857 | body. Note that this symbol is FL_UNKNOWN because it will | |
858 | only have appeared in a type declaration. The local symtree | |
859 | is set to point to the module symbol and a unique symtree | |
860 | to the local version. This latter ensures a correct clearing | |
861 | of the symbols. */ | |
2e32a71e PT |
862 | { |
863 | /* If the ENTRY proceeds its specification, we need to ensure | |
864 | that this does not raise a "has no IMPLICIT type" error. */ | |
865 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 866 | sym->attr.untyped = 1; |
2e32a71e | 867 | |
0e5a218b | 868 | (*result)->ts = sym->ts; |
2e32a71e PT |
869 | |
870 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 871 | the ENTRY precede its specification, the specification |
2e32a71e PT |
872 | can be applied. */ |
873 | (*result)->ns = gfc_current_ns; | |
874 | ||
875 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
876 | st->n.sym = *result; | |
877 | st = gfc_get_unique_symtree (gfc_current_ns); | |
878 | st->n.sym = sym; | |
879 | } | |
6c12686b | 880 | } |
68ea355b PT |
881 | else |
882 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 883 | |
a7ca4d8d PT |
884 | if (rc) |
885 | return rc; | |
886 | ||
68ea355b | 887 | sym = *result; |
2c693a24 | 888 | gfc_current_ns->refs++; |
6de9cd9a | 889 | |
7b901ac4 | 890 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
68ea355b | 891 | { |
cda7004b PT |
892 | /* Trap another encompassed procedure with the same name. All |
893 | these conditions are necessary to avoid picking up an entry | |
894 | whose name clashes with that of the encompassing procedure; | |
895 | this is handled using gsymbols to register unique,globally | |
896 | accessible names. */ | |
68ea355b | 897 | if (sym->attr.flavor != 0 |
636dff67 SK |
898 | && sym->attr.proc != 0 |
899 | && (sym->attr.subroutine || sym->attr.function) | |
900 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
68ea355b PT |
901 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
902 | name, &sym->declared_at); | |
903 | ||
fd3e70af JD |
904 | /* Trap a procedure with a name the same as interface in the |
905 | encompassing scope. */ | |
906 | if (sym->attr.generic != 0 | |
2305fa31 JD |
907 | && (sym->attr.subroutine || sym->attr.function) |
908 | && !sym->attr.mod_proc) | |
fd3e70af JD |
909 | gfc_error_now ("Name '%s' at %C is already defined" |
910 | " as a generic interface at %L", | |
911 | name, &sym->declared_at); | |
912 | ||
68ea355b PT |
913 | /* Trap declarations of attributes in encompassing scope. The |
914 | signature for this is that ts.kind is set. Legitimate | |
915 | references only set ts.type. */ | |
916 | if (sym->ts.kind != 0 | |
636dff67 SK |
917 | && !sym->attr.implicit_type |
918 | && sym->attr.proc == 0 | |
919 | && gfc_current_ns->parent != NULL | |
920 | && sym->attr.access == 0 | |
921 | && !module_fcn_entry) | |
922 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
923 | "and must not have attributes declared at %L", | |
68ea355b PT |
924 | name, &sym->declared_at); |
925 | } | |
926 | ||
927 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
928 | return rc; | |
6de9cd9a | 929 | |
1a492601 PT |
930 | /* Module function entries will already have a symtree in |
931 | the current namespace but will need one at module level. */ | |
932 | if (module_fcn_entry) | |
6c12686b PT |
933 | { |
934 | /* Present if entry is declared to be a module procedure. */ | |
935 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
936 | if (st == NULL) | |
937 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
938 | } | |
1a492601 PT |
939 | else |
940 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 941 | |
6de9cd9a DN |
942 | st->n.sym = sym; |
943 | sym->refs++; | |
944 | ||
66e4ab31 | 945 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 946 | |
1a492601 | 947 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
948 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
949 | && sym->attr.proc != PROC_MODULE) | |
950 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
951 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
952 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
953 | rc = 2; |
954 | ||
955 | return rc; | |
956 | } | |
957 | ||
958 | ||
a8b3b0b6 CR |
959 | /* Verify that the given symbol representing a parameter is C |
960 | interoperable, by checking to see if it was marked as such after | |
961 | its declaration. If the given symbol is not interoperable, a | |
962 | warning is reported, thus removing the need to return the status to | |
963 | the calling function. The standard does not require the user use | |
964 | one of the iso_c_binding named constants to declare an | |
965 | interoperable parameter, but we can't be sure if the param is C | |
966 | interop or not if the user doesn't. For example, integer(4) may be | |
967 | legal Fortran, but doesn't have meaning in C. It may interop with | |
968 | a number of the C types, which causes a problem because the | |
969 | compiler can't know which one. This code is almost certainly not | |
970 | portable, and the user will get what they deserve if the C type | |
971 | across platforms isn't always interoperable with integer(4). If | |
972 | the user had used something like integer(c_int) or integer(c_long), | |
973 | the compiler could have automatically handled the varying sizes | |
974 | across platforms. */ | |
975 | ||
17b1d2a0 | 976 | gfc_try |
00820a2a | 977 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
978 | { |
979 | int is_c_interop = 0; | |
17b1d2a0 | 980 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
981 | |
982 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
983 | Don't repeat the checks here. */ | |
984 | if (sym->attr.implicit_type) | |
985 | return SUCCESS; | |
986 | ||
987 | /* For subroutines or functions that are passed to a BIND(C) procedure, | |
988 | they're interoperable if they're BIND(C) and their params are all | |
989 | interoperable. */ | |
990 | if (sym->attr.flavor == FL_PROCEDURE) | |
991 | { | |
992 | if (sym->attr.is_bind_c == 0) | |
993 | { | |
994 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
995 | "attribute to be C interoperable", sym->name, | |
996 | &(sym->declared_at)); | |
997 | ||
998 | return FAILURE; | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | if (sym->attr.is_c_interop == 1) | |
1003 | /* We've already checked this procedure; don't check it again. */ | |
1004 | return SUCCESS; | |
1005 | else | |
1006 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1007 | sym->common_block); | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | /* See if we've stored a reference to a procedure that owns sym. */ | |
1012 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1013 | { | |
1014 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1015 | { | |
00820a2a | 1016 | is_c_interop = (gfc_verify_c_interop (&(sym->ts)) == SUCCESS ? 1 : 0); |
a8b3b0b6 CR |
1017 | |
1018 | if (is_c_interop != 1) | |
1019 | { | |
1020 | /* Make personalized messages to give better feedback. */ | |
1021 | if (sym->ts.type == BT_DERIVED) | |
00820a2a JW |
1022 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1023 | "BIND(C) procedure '%s' but is not C interoperable " | |
a8b3b0b6 CR |
1024 | "because derived type '%s' is not C interoperable", |
1025 | sym->name, &(sym->declared_at), | |
1026 | sym->ns->proc_name->name, | |
bc21d315 | 1027 | sym->ts.u.derived->name); |
00820a2a JW |
1028 | else if (sym->ts.type == BT_CLASS) |
1029 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1030 | "BIND(C) procedure '%s' but is not C interoperable " | |
1031 | "because it is polymorphic", | |
1032 | sym->name, &(sym->declared_at), | |
1033 | sym->ns->proc_name->name); | |
7fe3aa08 TB |
1034 | else if (gfc_option.warn_c_binding_type) |
1035 | gfc_warning ("Variable '%s' at %L is a dummy argument of the " | |
a8b3b0b6 CR |
1036 | "BIND(C) procedure '%s' but may not be C " |
1037 | "interoperable", | |
1038 | sym->name, &(sym->declared_at), | |
1039 | sym->ns->proc_name->name); | |
1040 | } | |
aa5e22f0 CR |
1041 | |
1042 | /* Character strings are only C interoperable if they have a | |
1043 | length of 1. */ | |
1044 | if (sym->ts.type == BT_CHARACTER) | |
1045 | { | |
bc21d315 | 1046 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1047 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1048 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1049 | { | |
1050 | gfc_error ("Character argument '%s' at %L " | |
1051 | "must be length 1 because " | |
1052 | "procedure '%s' is BIND(C)", | |
1053 | sym->name, &sym->declared_at, | |
1054 | sym->ns->proc_name->name); | |
1055 | retval = FAILURE; | |
1056 | } | |
1057 | } | |
1058 | ||
a8b3b0b6 CR |
1059 | /* We have to make sure that any param to a bind(c) routine does |
1060 | not have the allocatable, pointer, or optional attributes, | |
1061 | according to J3/04-007, section 5.1. */ | |
1062 | if (sym->attr.allocatable == 1) | |
1063 | { | |
1064 | gfc_error ("Variable '%s' at %L cannot have the " | |
1065 | "ALLOCATABLE attribute because procedure '%s'" | |
1066 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1067 | sym->ns->proc_name->name); | |
1068 | retval = FAILURE; | |
1069 | } | |
1070 | ||
1071 | if (sym->attr.pointer == 1) | |
1072 | { | |
1073 | gfc_error ("Variable '%s' at %L cannot have the " | |
1074 | "POINTER attribute because procedure '%s'" | |
1075 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1076 | sym->ns->proc_name->name); | |
1077 | retval = FAILURE; | |
1078 | } | |
1079 | ||
2e8d9212 | 1080 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1081 | { |
2e8d9212 TB |
1082 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1083 | "and the VALUE attribute because procedure '%s' " | |
1084 | "is BIND(C)", sym->name, &(sym->declared_at), | |
a8b3b0b6 CR |
1085 | sym->ns->proc_name->name); |
1086 | retval = FAILURE; | |
1087 | } | |
2e8d9212 | 1088 | else if (sym->attr.optional == 1 |
9717f7a1 | 1089 | && gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' " |
2e8d9212 TB |
1090 | "at %L with OPTIONAL attribute in " |
1091 | "procedure '%s' which is BIND(C)", | |
1092 | sym->name, &(sym->declared_at), | |
1093 | sym->ns->proc_name->name) | |
1094 | == FAILURE) | |
1095 | retval = FAILURE; | |
a8b3b0b6 CR |
1096 | |
1097 | /* Make sure that if it has the dimension attribute, that it is | |
1098 | either assumed size or explicit shape. */ | |
1099 | if (sym->as != NULL) | |
1100 | { | |
1101 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
1102 | { | |
1103 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
1104 | "argument to the procedure '%s' at %L because " | |
1105 | "the procedure is BIND(C)", sym->name, | |
1106 | &(sym->declared_at), sym->ns->proc_name->name, | |
1107 | &(sym->ns->proc_name->declared_at)); | |
1108 | retval = FAILURE; | |
1109 | } | |
1110 | ||
1111 | if (sym->as->type == AS_DEFERRED) | |
1112 | { | |
1113 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
1114 | "argument to the procedure '%s' at %L because " | |
1115 | "the procedure is BIND(C)", sym->name, | |
1116 | &(sym->declared_at), sym->ns->proc_name->name, | |
1117 | &(sym->ns->proc_name->declared_at)); | |
1118 | retval = FAILURE; | |
1119 | } | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | return retval; | |
1125 | } | |
1126 | ||
1127 | ||
cf2b3c22 | 1128 | |
a8b3b0b6 | 1129 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1130 | |
17b1d2a0 | 1131 | static gfc_try |
e69afb29 | 1132 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1133 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1134 | { |
1135 | symbol_attribute attr; | |
1136 | gfc_symbol *sym; | |
1137 | ||
9e35b386 | 1138 | if (gfc_get_symbol (name, NULL, &sym)) |
6de9cd9a DN |
1139 | return FAILURE; |
1140 | ||
66e4ab31 | 1141 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1142 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1143 | && (sym->attr.implicit_type == 0 |
1144 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
6de9cd9a DN |
1145 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
1146 | return FAILURE; | |
1147 | ||
1148 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1149 | { |
1150 | sym->ts.u.cl = cl; | |
1151 | sym->ts.deferred = cl_deferred; | |
1152 | } | |
6de9cd9a DN |
1153 | |
1154 | /* Add dimension attribute if present. */ | |
1155 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
1156 | return FAILURE; | |
1157 | *as = NULL; | |
1158 | ||
1159 | /* Add attribute to symbol. The copy is so that we can reset the | |
1160 | dimension attribute. */ | |
1161 | attr = current_attr; | |
1162 | attr.dimension = 0; | |
be59db2d | 1163 | attr.codimension = 0; |
6de9cd9a DN |
1164 | |
1165 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
1166 | return FAILURE; | |
1167 | ||
a8b3b0b6 CR |
1168 | /* Finish any work that may need to be done for the binding label, |
1169 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1170 | is made, and before the symbol name (for data decls), so the | |
1171 | current_ts is holding the binding label, or nothing if the | |
1172 | name= attr wasn't given. Therefore, test here if we're dealing | |
1173 | with a bind(c) and make sure the binding label is set correctly. */ | |
1174 | if (sym->attr.is_bind_c == 1) | |
1175 | { | |
62603fae | 1176 | if (!sym->binding_label) |
a8b3b0b6 | 1177 | { |
ad4a2f64 TB |
1178 | /* Set the binding label and verify that if a NAME= was specified |
1179 | then only one identifier was in the entity-decl-list. */ | |
62603fae | 1180 | if (set_binding_label (&sym->binding_label, sym->name, |
ad4a2f64 | 1181 | num_idents_on_line) == FAILURE) |
a8b3b0b6 CR |
1182 | return FAILURE; |
1183 | } | |
1184 | } | |
1185 | ||
1186 | /* See if we know we're in a common block, and if it's a bind(c) | |
1187 | common then we need to make sure we're an interoperable type. */ | |
1188 | if (sym->attr.in_common == 1) | |
1189 | { | |
1190 | /* Test the common block object. */ | |
1191 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1192 | && sym->ts.is_c_interop != 1) | |
1193 | { | |
1194 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1195 | "must be declared with a C interoperable " | |
1196 | "kind since common block '%s' is BIND(C)", | |
1197 | sym->name, sym->common_block->name, | |
1198 | sym->common_block->name); | |
1199 | gfc_clear_error (); | |
1200 | } | |
1201 | } | |
1202 | ||
9a3db5a3 PT |
1203 | sym->attr.implied_index = 0; |
1204 | ||
528622fd | 1205 | if (sym->ts.type == BT_CLASS) |
96d9b22c | 1206 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
cf2b3c22 | 1207 | |
6de9cd9a DN |
1208 | return SUCCESS; |
1209 | } | |
1210 | ||
636dff67 | 1211 | |
df7cc9b5 | 1212 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1213 | truncated. If we're inside an array constructor without a typespec, we |
1214 | additionally check that all elements have the same length; check_len -1 | |
1215 | means no checking. */ | |
df7cc9b5 FW |
1216 | |
1217 | void | |
d2848082 | 1218 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1219 | { |
00660189 | 1220 | gfc_char_t *s; |
df7cc9b5 FW |
1221 | int slen; |
1222 | ||
1223 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1224 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1225 | |
1226 | slen = expr->value.character.length; | |
1227 | if (len != slen) | |
1228 | { | |
00660189 FXC |
1229 | s = gfc_get_wide_string (len + 1); |
1230 | memcpy (s, expr->value.character.string, | |
1231 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1232 | if (len > slen) |
00660189 | 1233 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d PT |
1234 | |
1235 | if (gfc_option.warn_character_truncation && slen > len) | |
1236 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1237 | "(%d/%d)", &expr->where, slen, len); | |
1238 | ||
1239 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1240 | initializers. */ | |
d2848082 DK |
1241 | if (check_len != -1 && slen != check_len |
1242 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1243 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1244 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1245 | &expr->where, slen, check_len); |
2220652d | 1246 | |
150675a8 | 1247 | s[len] = '\0'; |
cede9502 | 1248 | free (expr->value.character.string); |
df7cc9b5 FW |
1249 | expr->value.character.string = s; |
1250 | expr->value.character.length = len; | |
1251 | } | |
1252 | } | |
6de9cd9a | 1253 | |
25d8f0a2 | 1254 | |
d51347f9 | 1255 | /* Function to create and update the enumerator history |
25d8f0a2 | 1256 | using the information passed as arguments. |
d51347f9 TB |
1257 | Pointer "max_enum" is also updated, to point to |
1258 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1259 | |
1260 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1261 | INIT points to its enumerator value. */ |
25d8f0a2 | 1262 | |
d51347f9 | 1263 | static void |
636dff67 | 1264 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1265 | { |
1266 | enumerator_history *new_enum_history; | |
1267 | gcc_assert (sym != NULL && init != NULL); | |
1268 | ||
ece3f663 | 1269 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1270 | |
1271 | new_enum_history->sym = sym; | |
1272 | new_enum_history->initializer = init; | |
1273 | new_enum_history->next = NULL; | |
1274 | ||
1275 | if (enum_history == NULL) | |
1276 | { | |
1277 | enum_history = new_enum_history; | |
1278 | max_enum = enum_history; | |
1279 | } | |
1280 | else | |
1281 | { | |
1282 | new_enum_history->next = enum_history; | |
1283 | enum_history = new_enum_history; | |
1284 | ||
d51347f9 | 1285 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1286 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1287 | max_enum = new_enum_history; |
25d8f0a2 TS |
1288 | } |
1289 | } | |
1290 | ||
1291 | ||
d51347f9 | 1292 | /* Function to free enum kind history. */ |
25d8f0a2 | 1293 | |
d51347f9 | 1294 | void |
636dff67 | 1295 | gfc_free_enum_history (void) |
25d8f0a2 | 1296 | { |
d51347f9 TB |
1297 | enumerator_history *current = enum_history; |
1298 | enumerator_history *next; | |
25d8f0a2 TS |
1299 | |
1300 | while (current != NULL) | |
1301 | { | |
1302 | next = current->next; | |
cede9502 | 1303 | free (current); |
25d8f0a2 TS |
1304 | current = next; |
1305 | } | |
1306 | max_enum = NULL; | |
1307 | enum_history = NULL; | |
1308 | } | |
1309 | ||
1310 | ||
6de9cd9a DN |
1311 | /* Function called by variable_decl() that adds an initialization |
1312 | expression to a symbol. */ | |
1313 | ||
17b1d2a0 | 1314 | static gfc_try |
66e4ab31 | 1315 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1316 | { |
1317 | symbol_attribute attr; | |
1318 | gfc_symbol *sym; | |
1319 | gfc_expr *init; | |
1320 | ||
1321 | init = *initp; | |
08a6b8e0 | 1322 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
1323 | return FAILURE; |
1324 | ||
1325 | attr = sym->attr; | |
1326 | ||
1327 | /* If this symbol is confirming an implicit parameter type, | |
1328 | then an initialization expression is not allowed. */ | |
1329 | if (attr.flavor == FL_PARAMETER | |
1330 | && sym->value != NULL | |
1331 | && *initp != NULL) | |
1332 | { | |
1333 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1334 | sym->name); | |
1335 | return FAILURE; | |
1336 | } | |
1337 | ||
1338 | if (init == NULL) | |
1339 | { | |
1340 | /* An initializer is required for PARAMETER declarations. */ | |
1341 | if (attr.flavor == FL_PARAMETER) | |
1342 | { | |
1343 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1344 | return FAILURE; | |
1345 | } | |
1346 | } | |
1347 | else | |
1348 | { | |
1349 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1350 | initializer. */ |
6de9cd9a DN |
1351 | if (sym->attr.data) |
1352 | { | |
636dff67 SK |
1353 | gfc_error ("Variable '%s' at %C with an initializer already " |
1354 | "appears in a DATA statement", sym->name); | |
6de9cd9a DN |
1355 | return FAILURE; |
1356 | } | |
1357 | ||
75d17889 | 1358 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1359 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1360 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1361 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
80f95228 | 1362 | && !sym->attr.proc_pointer |
6de9cd9a DN |
1363 | && gfc_check_assign_symbol (sym, init) == FAILURE) |
1364 | return FAILURE; | |
1365 | ||
bc21d315 | 1366 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1367 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1368 | { |
1369 | /* Update symbol character length according initializer. */ | |
51b128a0 PT |
1370 | if (gfc_check_assign_symbol (sym, init) == FAILURE) |
1371 | return FAILURE; | |
1372 | ||
bc21d315 | 1373 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1374 | { |
a99288e5 | 1375 | int clen; |
66e4ab31 SK |
1376 | /* If there are multiple CHARACTER variables declared on the |
1377 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1378 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1379 | |
a99288e5 PT |
1380 | if (sym->attr.flavor == FL_PARAMETER) |
1381 | { | |
1382 | if (init->expr_type == EXPR_CONSTANT) | |
1383 | { | |
1384 | clen = init->value.character.length; | |
b7e75771 JD |
1385 | sym->ts.u.cl->length |
1386 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1387 | NULL, clen); | |
a99288e5 PT |
1388 | } |
1389 | else if (init->expr_type == EXPR_ARRAY) | |
1390 | { | |
b7e75771 JD |
1391 | gfc_constructor *c; |
1392 | c = gfc_constructor_first (init->value.constructor); | |
1393 | clen = c->expr->value.character.length; | |
1394 | sym->ts.u.cl->length | |
1395 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1396 | NULL, clen); | |
a99288e5 | 1397 | } |
bc21d315 JW |
1398 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1399 | sym->ts.u.cl->length = | |
1400 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1401 | } |
df7cc9b5 FW |
1402 | } |
1403 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1404 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1405 | { |
bc21d315 | 1406 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
df7cc9b5 FW |
1407 | |
1408 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1409 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1410 | else if (init->expr_type == EXPR_ARRAY) |
1411 | { | |
b7e75771 JD |
1412 | gfc_constructor *c; |
1413 | ||
dcdc7b6c PT |
1414 | /* Build a new charlen to prevent simplification from |
1415 | deleting the length before it is resolved. */ | |
b76e28c6 | 1416 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1417 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1418 | |
b7e75771 JD |
1419 | for (c = gfc_constructor_first (init->value.constructor); |
1420 | c; c = gfc_constructor_next (c)) | |
1421 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1422 | } |
1423 | } | |
1424 | } | |
1425 | ||
f5ca06e6 DK |
1426 | /* If sym is implied-shape, set its upper bounds from init. */ |
1427 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1428 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1429 | { | |
1430 | int dim; | |
1431 | ||
1432 | if (init->rank == 0) | |
1433 | { | |
1434 | gfc_error ("Can't initialize implied-shape array at %L" | |
1435 | " with scalar", &sym->declared_at); | |
1436 | return FAILURE; | |
1437 | } | |
1438 | gcc_assert (sym->as->rank == init->rank); | |
1439 | ||
1440 | /* Shape should be present, we get an initialization expression. */ | |
1441 | gcc_assert (init->shape); | |
1442 | ||
1443 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1444 | { | |
1445 | int k; | |
1446 | gfc_expr* lower; | |
1447 | gfc_expr* e; | |
1448 | ||
1449 | lower = sym->as->lower[dim]; | |
1450 | if (lower->expr_type != EXPR_CONSTANT) | |
1451 | { | |
1452 | gfc_error ("Non-constant lower bound in implied-shape" | |
1453 | " declaration at %L", &lower->where); | |
1454 | return FAILURE; | |
1455 | } | |
1456 | ||
1457 | /* All dimensions must be without upper bound. */ | |
1458 | gcc_assert (!sym->as->upper[dim]); | |
1459 | ||
1460 | k = lower->ts.kind; | |
1461 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1462 | mpz_add (e->value.integer, | |
1463 | lower->value.integer, init->shape[dim]); | |
1464 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1465 | sym->as->upper[dim] = e; | |
1466 | } | |
1467 | ||
1468 | sym->as->type = AS_EXPLICIT; | |
1469 | } | |
1470 | ||
a8b3b0b6 CR |
1471 | /* Need to check if the expression we initialized this |
1472 | to was one of the iso_c_binding named constants. If so, | |
1473 | and we're a parameter (constant), let it be iso_c. | |
1474 | For example: | |
1475 | integer(c_int), parameter :: my_int = c_int | |
1476 | integer(my_int) :: my_int_2 | |
1477 | If we mark my_int as iso_c (since we can see it's value | |
1478 | is equal to one of the named constants), then my_int_2 | |
1479 | will be considered C interoperable. */ | |
1480 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1481 | { | |
1482 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1483 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1484 | /* attr bits needed for module files. */ | |
1485 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1486 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1487 | if (init->ts.is_iso_c) | |
1488 | sym->ts.f90_type = init->ts.f90_type; | |
1489 | } | |
b7e75771 | 1490 | |
6de9cd9a DN |
1491 | /* Add initializer. Make sure we keep the ranks sane. */ |
1492 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1493 | { |
1494 | mpz_t size; | |
1495 | gfc_expr *array; | |
a9b43781 PT |
1496 | int n; |
1497 | if (sym->attr.flavor == FL_PARAMETER | |
1498 | && init->expr_type == EXPR_CONSTANT | |
1499 | && spec_size (sym->as, &size) == SUCCESS | |
1500 | && mpz_cmp_si (size, 0) > 0) | |
1501 | { | |
b7e75771 JD |
1502 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1503 | &init->where); | |
a9b43781 | 1504 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1505 | gfc_constructor_append_expr (&array->value.constructor, |
1506 | n == 0 | |
1507 | ? init | |
1508 | : gfc_copy_expr (init), | |
1509 | &init->where); | |
1510 | ||
a9b43781 PT |
1511 | array->shape = gfc_get_shape (sym->as->rank); |
1512 | for (n = 0; n < sym->as->rank; n++) | |
1513 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1514 | ||
1515 | init = array; | |
1516 | mpz_clear (size); | |
1517 | } | |
1518 | init->rank = sym->as->rank; | |
1519 | } | |
6de9cd9a DN |
1520 | |
1521 | sym->value = init; | |
ef7236d2 DF |
1522 | if (sym->attr.save == SAVE_NONE) |
1523 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1524 | *initp = NULL; |
1525 | } | |
1526 | ||
1527 | return SUCCESS; | |
1528 | } | |
1529 | ||
1530 | ||
1531 | /* Function called by variable_decl() that adds a name to a structure | |
1532 | being built. */ | |
1533 | ||
17b1d2a0 | 1534 | static gfc_try |
636dff67 SK |
1535 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1536 | gfc_array_spec **as) | |
6de9cd9a DN |
1537 | { |
1538 | gfc_component *c; | |
2e23972e | 1539 | gfc_try t = SUCCESS; |
6de9cd9a | 1540 | |
619dd721 | 1541 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1542 | constructing, it must have the pointer attribute. */ |
619dd721 | 1543 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1544 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1545 | && current_attr.pointer == 0) |
1546 | { | |
1547 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1548 | return FAILURE; | |
1549 | } | |
1550 | ||
636dff67 | 1551 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1552 | { |
1553 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1554 | { | |
1555 | gfc_error ("Array component of structure at %C must have explicit " | |
1556 | "or deferred shape"); | |
1557 | return FAILURE; | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1562 | return FAILURE; | |
1563 | ||
1564 | c->ts = current_ts; | |
bc21d315 JW |
1565 | if (c->ts.type == BT_CHARACTER) |
1566 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1567 | c->attr = current_attr; |
6de9cd9a DN |
1568 | |
1569 | c->initializer = *init; | |
1570 | *init = NULL; | |
1571 | ||
1572 | c->as = *as; | |
1573 | if (c->as != NULL) | |
be59db2d TB |
1574 | { |
1575 | if (c->as->corank) | |
1576 | c->attr.codimension = 1; | |
1577 | if (c->as->rank) | |
1578 | c->attr.dimension = 1; | |
1579 | } | |
6de9cd9a DN |
1580 | *as = NULL; |
1581 | ||
28d08315 PT |
1582 | /* Should this ever get more complicated, combine with similar section |
1583 | in add_init_expr_to_sym into a separate function. */ | |
f4347334 ZG |
1584 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1585 | && c->ts.u.cl | |
bc21d315 | 1586 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
28d08315 | 1587 | { |
d2848082 DK |
1588 | int len; |
1589 | ||
bc21d315 JW |
1590 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1591 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1592 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1593 | |
bc21d315 | 1594 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1595 | |
1596 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1597 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1598 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1599 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1600 | { |
b7e75771 JD |
1601 | gfc_constructor *ctor; |
1602 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1603 | |
2f4d1994 | 1604 | if (ctor) |
d2848082 | 1605 | { |
2f4d1994 | 1606 | int first_len; |
b7e75771 JD |
1607 | bool has_ts = (c->initializer->ts.u.cl |
1608 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1609 | |
1610 | /* Remember the length of the first element for checking | |
1611 | that all elements *in the constructor* have the same | |
1612 | length. This need not be the length of the LHS! */ | |
1613 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1614 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1615 | first_len = ctor->expr->value.character.length; | |
1616 | ||
b7e75771 JD |
1617 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1618 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1619 | { |
b7e75771 JD |
1620 | gfc_set_constant_character_len (len, ctor->expr, |
1621 | has_ts ? -1 : first_len); | |
1622 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1623 | } |
d2848082 | 1624 | } |
28d08315 PT |
1625 | } |
1626 | } | |
1627 | ||
6de9cd9a | 1628 | /* Check array components. */ |
d4b7d0f0 | 1629 | if (!c->attr.dimension) |
2e23972e | 1630 | goto scalar; |
6de9cd9a | 1631 | |
d4b7d0f0 | 1632 | if (c->attr.pointer) |
6de9cd9a DN |
1633 | { |
1634 | if (c->as->type != AS_DEFERRED) | |
1635 | { | |
5046aff5 PT |
1636 | gfc_error ("Pointer array component of structure at %C must have a " |
1637 | "deferred shape"); | |
2e23972e | 1638 | t = FAILURE; |
5046aff5 PT |
1639 | } |
1640 | } | |
d4b7d0f0 | 1641 | else if (c->attr.allocatable) |
5046aff5 PT |
1642 | { |
1643 | if (c->as->type != AS_DEFERRED) | |
1644 | { | |
1645 | gfc_error ("Allocatable component of structure at %C must have a " | |
1646 | "deferred shape"); | |
2e23972e | 1647 | t = FAILURE; |
6de9cd9a DN |
1648 | } |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | if (c->as->type != AS_EXPLICIT) | |
1653 | { | |
636dff67 SK |
1654 | gfc_error ("Array component of structure at %C must have an " |
1655 | "explicit shape"); | |
2e23972e | 1656 | t = FAILURE; |
6de9cd9a DN |
1657 | } |
1658 | } | |
1659 | ||
2e23972e JW |
1660 | scalar: |
1661 | if (c->ts.type == BT_CLASS) | |
17643884 JW |
1662 | { |
1663 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1664 | || (!c->ts.u.derived->components | |
1665 | && !c->ts.u.derived->attr.zero_comp); | |
ea59b186 TB |
1666 | gfc_try t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
1667 | ||
1668 | if (t != FAILURE) | |
1669 | t = t2; | |
17643884 JW |
1670 | } |
1671 | ||
2e23972e | 1672 | return t; |
6de9cd9a DN |
1673 | } |
1674 | ||
1675 | ||
1676 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1677 | ||
1678 | match | |
636dff67 | 1679 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1680 | { |
1681 | gfc_symbol *sym; | |
6de9cd9a DN |
1682 | match m; |
1683 | ||
1684 | m = gfc_match (" null ( )"); | |
1685 | if (m != MATCH_YES) | |
1686 | return m; | |
1687 | ||
1688 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1689 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1690 | { | |
1691 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1692 | return MATCH_ERROR; | |
1693 | } | |
1694 | ||
1695 | gfc_intrinsic_symbol (sym); | |
1696 | ||
1697 | if (sym->attr.proc != PROC_INTRINSIC | |
231b2fcc TS |
1698 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1699 | sym->name, NULL) == FAILURE | |
1700 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
6de9cd9a DN |
1701 | return MATCH_ERROR; |
1702 | ||
b7e75771 | 1703 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a DN |
1704 | |
1705 | return MATCH_YES; | |
1706 | } | |
1707 | ||
1708 | ||
80f95228 JW |
1709 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1710 | ||
1711 | static match | |
1712 | match_pointer_init (gfc_expr **init, int procptr) | |
1713 | { | |
1714 | match m; | |
1715 | ||
1716 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1717 | { | |
1718 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1719 | "a PURE procedure"); | |
1720 | return MATCH_ERROR; | |
1721 | } | |
1722 | ||
eea58adb | 1723 | /* Match NULL() initialization. */ |
80f95228 JW |
1724 | m = gfc_match_null (init); |
1725 | if (m != MATCH_NO) | |
1726 | return m; | |
1727 | ||
1728 | /* Match non-NULL initialization. */ | |
837c4b78 | 1729 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1730 | gfc_matching_procptr_assignment = procptr; |
1731 | m = gfc_match_rvalue (init); | |
837c4b78 | 1732 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1733 | gfc_matching_procptr_assignment = 0; |
1734 | if (m == MATCH_ERROR) | |
1735 | return MATCH_ERROR; | |
1736 | else if (m == MATCH_NO) | |
1737 | { | |
1738 | gfc_error ("Error in pointer initialization at %C"); | |
1739 | return MATCH_ERROR; | |
1740 | } | |
1741 | ||
1742 | if (!procptr) | |
1743 | gfc_resolve_expr (*init); | |
1744 | ||
9717f7a1 | 1745 | if (gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
80f95228 JW |
1746 | "initialization at %C") == FAILURE) |
1747 | return MATCH_ERROR; | |
1748 | ||
1749 | return MATCH_YES; | |
1750 | } | |
1751 | ||
1752 | ||
bb9de0c4 JW |
1753 | static gfc_try |
1754 | check_function_name (char *name) | |
1755 | { | |
1756 | /* In functions that have a RESULT variable defined, the function name always | |
1757 | refers to function calls. Therefore, the name is not allowed to appear in | |
1758 | specification statements. When checking this, be careful about | |
1759 | 'hidden' procedure pointer results ('ppr@'). */ | |
1760 | ||
1761 | if (gfc_current_state () == COMP_FUNCTION) | |
1762 | { | |
1763 | gfc_symbol *block = gfc_current_block (); | |
1764 | if (block && block->result && block->result != block | |
1765 | && strcmp (block->result->name, "ppr@") != 0 | |
1766 | && strcmp (block->name, name) == 0) | |
1767 | { | |
1768 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1769 | return FAILURE; | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | return SUCCESS; | |
1774 | } | |
1775 | ||
1776 | ||
6de9cd9a DN |
1777 | /* Match a variable name with an optional initializer. When this |
1778 | subroutine is called, a variable is expected to be parsed next. | |
1779 | Depending on what is happening at the moment, updates either the | |
1780 | symbol table or the current interface. */ | |
1781 | ||
1782 | static match | |
949d5b72 | 1783 | variable_decl (int elem) |
6de9cd9a DN |
1784 | { |
1785 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1786 | gfc_expr *initializer, *char_len; | |
1787 | gfc_array_spec *as; | |
83d890b9 | 1788 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1789 | gfc_charlen *cl; |
e69afb29 | 1790 | bool cl_deferred; |
6de9cd9a DN |
1791 | locus var_locus; |
1792 | match m; | |
17b1d2a0 | 1793 | gfc_try t; |
83d890b9 | 1794 | gfc_symbol *sym; |
6de9cd9a DN |
1795 | |
1796 | initializer = NULL; | |
1797 | as = NULL; | |
83d890b9 | 1798 | cp_as = NULL; |
6de9cd9a DN |
1799 | |
1800 | /* When we get here, we've just matched a list of attributes and | |
1801 | maybe a type and a double colon. The next thing we expect to see | |
1802 | is the name of the symbol. */ | |
1803 | m = gfc_match_name (name); | |
1804 | if (m != MATCH_YES) | |
1805 | goto cleanup; | |
1806 | ||
63645982 | 1807 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1808 | |
1809 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1810 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1811 | if (m == MATCH_ERROR) |
6de9cd9a | 1812 | goto cleanup; |
25d8f0a2 | 1813 | |
6de9cd9a DN |
1814 | if (m == MATCH_NO) |
1815 | as = gfc_copy_array_spec (current_as); | |
d3a9eea2 TB |
1816 | else if (current_as) |
1817 | merge_array_spec (current_as, as, true); | |
6de9cd9a | 1818 | |
11126dc0 AL |
1819 | if (gfc_option.flag_cray_pointer) |
1820 | cp_as = gfc_copy_array_spec (as); | |
1821 | ||
f5ca06e6 DK |
1822 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1823 | determine (and check) whether it can be implied-shape. If it | |
1824 | was parsed as assumed-size, change it because PARAMETERs can not | |
1825 | be assumed-size. */ | |
1826 | if (as) | |
1827 | { | |
1828 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1829 | { | |
1830 | m = MATCH_ERROR; | |
1831 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1832 | name, &var_locus); | |
1833 | goto cleanup; | |
1834 | } | |
1835 | ||
1836 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1837 | && current_attr.flavor == FL_PARAMETER) | |
1838 | as->type = AS_IMPLIED_SHAPE; | |
1839 | ||
1840 | if (as->type == AS_IMPLIED_SHAPE | |
1841 | && gfc_notify_std (GFC_STD_F2008, | |
9717f7a1 | 1842 | "Implied-shape array at %L", |
f5ca06e6 DK |
1843 | &var_locus) == FAILURE) |
1844 | { | |
1845 | m = MATCH_ERROR; | |
1846 | goto cleanup; | |
1847 | } | |
1848 | } | |
1849 | ||
6de9cd9a DN |
1850 | char_len = NULL; |
1851 | cl = NULL; | |
e69afb29 | 1852 | cl_deferred = false; |
6de9cd9a DN |
1853 | |
1854 | if (current_ts.type == BT_CHARACTER) | |
1855 | { | |
2767f2cc | 1856 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
1857 | { |
1858 | case MATCH_YES: | |
b76e28c6 | 1859 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1860 | |
1861 | cl->length = char_len; | |
1862 | break; | |
1863 | ||
949d5b72 | 1864 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1865 | element. Also copy assumed lengths. */ |
6de9cd9a | 1866 | case MATCH_NO: |
9b21a380 | 1867 | if (elem > 1 |
bc21d315 JW |
1868 | && (current_ts.u.cl->length == NULL |
1869 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1870 | { |
b76e28c6 | 1871 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1872 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1873 | } |
1874 | else | |
bc21d315 | 1875 | cl = current_ts.u.cl; |
949d5b72 | 1876 | |
e69afb29 SK |
1877 | cl_deferred = current_ts.deferred; |
1878 | ||
6de9cd9a DN |
1879 | break; |
1880 | ||
1881 | case MATCH_ERROR: | |
1882 | goto cleanup; | |
1883 | } | |
1884 | } | |
1885 | ||
83d890b9 | 1886 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1887 | then we want to set the type & bail out. */ |
83d890b9 AL |
1888 | if (gfc_option.flag_cray_pointer) |
1889 | { | |
1890 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1891 | if (sym != NULL && sym->attr.cray_pointee) | |
1892 | { | |
1893 | sym->ts.type = current_ts.type; | |
1894 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
1895 | sym->ts.u.cl = cl; |
1896 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
1897 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1898 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 AL |
1899 | m = MATCH_YES; |
1900 | ||
1901 | /* Check to see if we have an array specification. */ | |
1902 | if (cp_as != NULL) | |
1903 | { | |
1904 | if (sym->as != NULL) | |
1905 | { | |
e25a0da3 | 1906 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1907 | gfc_free_array_spec (cp_as); |
1908 | m = MATCH_ERROR; | |
1909 | goto cleanup; | |
1910 | } | |
1911 | else | |
1912 | { | |
1913 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1914 | gfc_internal_error ("Couldn't set pointee array spec."); | |
d51347f9 | 1915 | |
83d890b9 | 1916 | /* Fix the array spec. */ |
d51347f9 | 1917 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1918 | if (m == MATCH_ERROR) |
1919 | goto cleanup; | |
1920 | } | |
d51347f9 | 1921 | } |
83d890b9 AL |
1922 | goto cleanup; |
1923 | } | |
1924 | else | |
1925 | { | |
1926 | gfc_free_array_spec (cp_as); | |
1927 | } | |
1928 | } | |
d51347f9 | 1929 | |
3070bab4 JW |
1930 | /* Procedure pointer as function result. */ |
1931 | if (gfc_current_state () == COMP_FUNCTION | |
1932 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1933 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1934 | strcpy (name, "ppr@"); | |
1935 | ||
1936 | if (gfc_current_state () == COMP_FUNCTION | |
1937 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1938 | && gfc_current_block ()->result | |
1939 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1940 | strcpy (name, "ppr@"); | |
d51347f9 | 1941 | |
6de9cd9a DN |
1942 | /* OK, we've successfully matched the declaration. Now put the |
1943 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1944 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1945 | perfectly legal: |
1946 | ||
1947 | integer, parameter :: i = huge(i) | |
1948 | ||
1949 | This is only true for parameters or variables of a basic type. | |
1950 | For components of derived types, it is not true, so we don't | |
1951 | create a symbol for those yet. If we fail to create the symbol, | |
1952 | bail out. */ | |
1953 | if (gfc_current_state () != COMP_DERIVED | |
e69afb29 | 1954 | && build_sym (name, cl, cl_deferred, &as, &var_locus) == FAILURE) |
6de9cd9a | 1955 | { |
72af9f0b PT |
1956 | m = MATCH_ERROR; |
1957 | goto cleanup; | |
1958 | } | |
1959 | ||
6133c68a TS |
1960 | /* An interface body specifies all of the procedure's |
1961 | characteristics and these shall be consistent with those | |
1962 | specified in the procedure definition, except that the interface | |
1963 | may specify a procedure that is not pure if the procedure is | |
1964 | defined to be pure(12.3.2). */ | |
d646bbce | 1965 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
636dff67 SK |
1966 | && gfc_current_ns->proc_name |
1967 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
bc21d315 | 1968 | && current_ts.u.derived->ns != gfc_current_ns) |
5a8af0b4 PT |
1969 | { |
1970 | gfc_symtree *st; | |
bc21d315 JW |
1971 | st = gfc_find_symtree (gfc_current_ns->sym_root, current_ts.u.derived->name); |
1972 | if (!(current_ts.u.derived->attr.imported | |
5a8af0b4 | 1973 | && st != NULL |
c3f34952 | 1974 | && gfc_find_dt_in_generic (st->n.sym) == current_ts.u.derived) |
5a8af0b4 PT |
1975 | && !gfc_current_ns->has_import_set) |
1976 | { | |
c3f34952 | 1977 | gfc_error ("The type of '%s' at %C has not been declared within the " |
5a8af0b4 PT |
1978 | "interface", name); |
1979 | m = MATCH_ERROR; | |
1980 | goto cleanup; | |
1981 | } | |
6de9cd9a | 1982 | } |
bb9de0c4 JW |
1983 | |
1984 | if (check_function_name (name) == FAILURE) | |
6de9cd9a | 1985 | { |
6de9cd9a DN |
1986 | m = MATCH_ERROR; |
1987 | goto cleanup; | |
1988 | } | |
1989 | ||
294fbfc8 TS |
1990 | /* We allow old-style initializations of the form |
1991 | integer i /2/, j(4) /3*3, 1/ | |
1992 | (if no colon has been seen). These are different from data | |
1993 | statements in that initializers are only allowed to apply to the | |
1994 | variable immediately preceding, i.e. | |
1995 | integer i, j /1, 2/ | |
1996 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1997 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
1998 | |
1999 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2000 | { | |
9717f7a1 | 2001 | if (gfc_notify_std (GFC_STD_GNU, "Old-style " |
294fbfc8 TS |
2002 | "initialization at %C") == FAILURE) |
2003 | return MATCH_ERROR; | |
d51347f9 | 2004 | |
294fbfc8 TS |
2005 | return match_old_style_init (name); |
2006 | } | |
2007 | ||
6de9cd9a DN |
2008 | /* The double colon must be present in order to have initializers. |
2009 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2010 | if (colon_seen) | |
2011 | { | |
2012 | if (gfc_match (" =>") == MATCH_YES) | |
2013 | { | |
6de9cd9a DN |
2014 | if (!current_attr.pointer) |
2015 | { | |
2016 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2017 | m = MATCH_ERROR; | |
2018 | goto cleanup; | |
2019 | } | |
2020 | ||
80f95228 | 2021 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2022 | if (m != MATCH_YES) |
2023 | goto cleanup; | |
6de9cd9a DN |
2024 | } |
2025 | else if (gfc_match_char ('=') == MATCH_YES) | |
2026 | { | |
2027 | if (current_attr.pointer) | |
2028 | { | |
636dff67 SK |
2029 | gfc_error ("Pointer initialization at %C requires '=>', " |
2030 | "not '='"); | |
6de9cd9a DN |
2031 | m = MATCH_ERROR; |
2032 | goto cleanup; | |
2033 | } | |
2034 | ||
2035 | m = gfc_match_init_expr (&initializer); | |
2036 | if (m == MATCH_NO) | |
2037 | { | |
2038 | gfc_error ("Expected an initialization expression at %C"); | |
2039 | m = MATCH_ERROR; | |
2040 | } | |
2041 | ||
ade20620 TB |
2042 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2043 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2044 | { |
636dff67 SK |
2045 | gfc_error ("Initialization of variable at %C is not allowed in " |
2046 | "a PURE procedure"); | |
6de9cd9a DN |
2047 | m = MATCH_ERROR; |
2048 | } | |
2049 | ||
2050 | if (m != MATCH_YES) | |
2051 | goto cleanup; | |
2052 | } | |
cb44ab82 VL |
2053 | } |
2054 | ||
5046aff5 PT |
2055 | if (initializer != NULL && current_attr.allocatable |
2056 | && gfc_current_state () == COMP_DERIVED) | |
2057 | { | |
636dff67 SK |
2058 | gfc_error ("Initialization of allocatable component at %C is not " |
2059 | "allowed"); | |
5046aff5 PT |
2060 | m = MATCH_ERROR; |
2061 | goto cleanup; | |
2062 | } | |
2063 | ||
54b4ba60 | 2064 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2065 | NULL here, because we sometimes also need to check if a |
2066 | declaration *must* have an initialization expression. */ | |
2067 | if (gfc_current_state () != COMP_DERIVED) | |
2068 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2069 | else | |
54b4ba60 | 2070 | { |
5046aff5 | 2071 | if (current_ts.type == BT_DERIVED |
636dff67 | 2072 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2073 | initializer = gfc_default_initializer (¤t_ts); |
2074 | t = build_struct (name, cl, &initializer, &as); | |
2075 | } | |
6de9cd9a DN |
2076 | |
2077 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
2078 | ||
2079 | cleanup: | |
2080 | /* Free stuff up and return. */ | |
2081 | gfc_free_expr (initializer); | |
2082 | gfc_free_array_spec (as); | |
2083 | ||
2084 | return m; | |
2085 | } | |
2086 | ||
2087 | ||
b2b81a3f BM |
2088 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2089 | This assumes that the byte size is equal to the kind number for | |
2090 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2091 | |
2092 | match | |
636dff67 | 2093 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2094 | { |
2095 | match m; | |
5cf54585 | 2096 | int original_kind; |
6de9cd9a DN |
2097 | |
2098 | if (gfc_match_char ('*') != MATCH_YES) | |
2099 | return MATCH_NO; | |
2100 | ||
5cf54585 | 2101 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2102 | if (m != MATCH_YES) |
2103 | return MATCH_ERROR; | |
2104 | ||
e45b3c75 ES |
2105 | original_kind = ts->kind; |
2106 | ||
6de9cd9a | 2107 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2108 | if (ts->type == BT_COMPLEX) |
2109 | { | |
2110 | if (ts->kind % 2) | |
636dff67 SK |
2111 | { |
2112 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2113 | gfc_basic_typename (ts->type), original_kind); | |
2114 | return MATCH_ERROR; | |
2115 | } | |
e45b3c75 | 2116 | ts->kind /= 2; |
f4347334 ZG |
2117 | |
2118 | } | |
2119 | ||
2120 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2121 | ts->kind = 8; | |
2122 | ||
2123 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2124 | { | |
2125 | if (ts->kind == 4) | |
2126 | { | |
2127 | if (gfc_option.flag_real4_kind == 8) | |
2128 | ts->kind = 8; | |
2129 | if (gfc_option.flag_real4_kind == 10) | |
2130 | ts->kind = 10; | |
2131 | if (gfc_option.flag_real4_kind == 16) | |
2132 | ts->kind = 16; | |
2133 | } | |
2134 | ||
2135 | if (ts->kind == 8) | |
2136 | { | |
2137 | if (gfc_option.flag_real8_kind == 4) | |
2138 | ts->kind = 4; | |
2139 | if (gfc_option.flag_real8_kind == 10) | |
2140 | ts->kind = 10; | |
2141 | if (gfc_option.flag_real8_kind == 16) | |
2142 | ts->kind = 16; | |
2143 | } | |
e45b3c75 | 2144 | } |
6de9cd9a | 2145 | |
e7a2d5fb | 2146 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2147 | { |
e45b3c75 | 2148 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2149 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2150 | return MATCH_ERROR; |
2151 | } | |
2152 | ||
df8652dc SK |
2153 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
2154 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
2155 | return MATCH_ERROR; | |
2156 | ||
6de9cd9a DN |
2157 | return MATCH_YES; |
2158 | } | |
2159 | ||
2160 | ||
2161 | /* Match a kind specification. Since kinds are generally optional, we | |
2162 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2163 | string is found, then we know we have an error. */ | |
2164 | ||
2165 | match | |
e2d29968 | 2166 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2167 | { |
e2d29968 | 2168 | locus where, loc; |
6de9cd9a DN |
2169 | gfc_expr *e; |
2170 | match m, n; | |
96ee3a4a | 2171 | char c; |
6de9cd9a DN |
2172 | const char *msg; |
2173 | ||
2174 | m = MATCH_NO; | |
e2d29968 | 2175 | n = MATCH_YES; |
6de9cd9a DN |
2176 | e = NULL; |
2177 | ||
e2d29968 PT |
2178 | where = loc = gfc_current_locus; |
2179 | ||
2180 | if (kind_expr_only) | |
2181 | goto kind_expr; | |
6de9cd9a DN |
2182 | |
2183 | if (gfc_match_char ('(') == MATCH_NO) | |
2184 | return MATCH_NO; | |
2185 | ||
2186 | /* Also gobbles optional text. */ | |
2187 | if (gfc_match (" kind = ") == MATCH_YES) | |
2188 | m = MATCH_ERROR; | |
2189 | ||
e2d29968 PT |
2190 | loc = gfc_current_locus; |
2191 | ||
2192 | kind_expr: | |
6de9cd9a | 2193 | n = gfc_match_init_expr (&e); |
e2d29968 | 2194 | |
6de9cd9a | 2195 | if (n != MATCH_YES) |
e2d29968 | 2196 | { |
1c8bcdf7 | 2197 | if (gfc_matching_function) |
e2d29968 | 2198 | { |
1c8bcdf7 PT |
2199 | /* The function kind expression might include use associated or |
2200 | imported parameters and try again after the specification | |
2201 | expressions..... */ | |
e2d29968 PT |
2202 | if (gfc_match_char (')') != MATCH_YES) |
2203 | { | |
2204 | gfc_error ("Missing right parenthesis at %C"); | |
2205 | m = MATCH_ERROR; | |
2206 | goto no_match; | |
2207 | } | |
2208 | ||
2209 | gfc_free_expr (e); | |
e2d29968 PT |
2210 | gfc_undo_symbols (); |
2211 | return MATCH_YES; | |
2212 | } | |
2213 | else | |
2214 | { | |
2215 | /* ....or else, the match is real. */ | |
2216 | if (n == MATCH_NO) | |
2217 | gfc_error ("Expected initialization expression at %C"); | |
2218 | if (n != MATCH_YES) | |
2219 | return MATCH_ERROR; | |
2220 | } | |
2221 | } | |
6de9cd9a DN |
2222 | |
2223 | if (e->rank != 0) | |
2224 | { | |
2225 | gfc_error ("Expected scalar initialization expression at %C"); | |
2226 | m = MATCH_ERROR; | |
2227 | goto no_match; | |
2228 | } | |
2229 | ||
2230 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2231 | |
6de9cd9a DN |
2232 | if (msg != NULL) |
2233 | { | |
2234 | gfc_error (msg); | |
2235 | m = MATCH_ERROR; | |
2236 | goto no_match; | |
2237 | } | |
2238 | ||
a8b3b0b6 CR |
2239 | /* Before throwing away the expression, let's see if we had a |
2240 | C interoperable kind (and store the fact). */ | |
2241 | if (e->ts.is_c_interop == 1) | |
2242 | { | |
eea58adb | 2243 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2244 | of the named constants from iso_c_binding. */ |
2245 | ts->is_c_interop = e->ts.is_iso_c; | |
2246 | ts->f90_type = e->ts.f90_type; | |
2247 | } | |
2248 | ||
6de9cd9a DN |
2249 | gfc_free_expr (e); |
2250 | e = NULL; | |
2251 | ||
a8b3b0b6 CR |
2252 | /* Ignore errors to this point, if we've gotten here. This means |
2253 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2254 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2255 | { |
2256 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2257 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2258 | gfc_current_locus = where; |
2259 | return MATCH_ERROR; | |
6de9cd9a | 2260 | } |
96ee3a4a | 2261 | |
2ec855f1 TB |
2262 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2263 | if, e.g., c_double is used for COMPLEX as the standard | |
2264 | explicitly says that the kind type parameter for complex and real | |
2265 | variable is the same, i.e. c_float == c_float_complex. */ | |
2266 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2267 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2268 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
2be51762 TB |
2269 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2270 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2271 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2272 | |
96ee3a4a | 2273 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2274 | if ((c = gfc_next_ascii_char ()) != ')' |
2275 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2276 | { |
96ee3a4a TB |
2277 | if (ts->type == BT_CHARACTER) |
2278 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2279 | else | |
2280 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2281 | m = MATCH_ERROR; |
6de9cd9a | 2282 | } |
a8b3b0b6 CR |
2283 | else |
2284 | /* All tests passed. */ | |
2285 | m = MATCH_YES; | |
6de9cd9a | 2286 | |
a8b3b0b6 CR |
2287 | if(m == MATCH_ERROR) |
2288 | gfc_current_locus = where; | |
f4347334 ZG |
2289 | |
2290 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2291 | ts->kind = 8; | |
2292 | ||
2293 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2294 | { | |
2295 | if (ts->kind == 4) | |
2296 | { | |
2297 | if (gfc_option.flag_real4_kind == 8) | |
2298 | ts->kind = 8; | |
2299 | if (gfc_option.flag_real4_kind == 10) | |
2300 | ts->kind = 10; | |
2301 | if (gfc_option.flag_real4_kind == 16) | |
2302 | ts->kind = 16; | |
2303 | } | |
2304 | ||
2305 | if (ts->kind == 8) | |
2306 | { | |
2307 | if (gfc_option.flag_real8_kind == 4) | |
2308 | ts->kind = 4; | |
2309 | if (gfc_option.flag_real8_kind == 10) | |
2310 | ts->kind = 10; | |
2311 | if (gfc_option.flag_real8_kind == 16) | |
2312 | ts->kind = 16; | |
2313 | } | |
2314 | } | |
2315 | ||
a8b3b0b6 CR |
2316 | /* Return what we know from the test(s). */ |
2317 | return m; | |
6de9cd9a DN |
2318 | |
2319 | no_match: | |
2320 | gfc_free_expr (e); | |
63645982 | 2321 | gfc_current_locus = where; |
6de9cd9a DN |
2322 | return m; |
2323 | } | |
2324 | ||
2325 | ||
187de1ed FXC |
2326 | static match |
2327 | match_char_kind (int * kind, int * is_iso_c) | |
2328 | { | |
2329 | locus where; | |
2330 | gfc_expr *e; | |
2331 | match m, n; | |
2332 | const char *msg; | |
2333 | ||
2334 | m = MATCH_NO; | |
2335 | e = NULL; | |
2336 | where = gfc_current_locus; | |
2337 | ||
2338 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2339 | |
1c8bcdf7 | 2340 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2341 | { |
1c8bcdf7 PT |
2342 | /* The expression might include use-associated or imported |
2343 | parameters and try again after the specification | |
2344 | expressions. */ | |
96ee3a4a | 2345 | gfc_free_expr (e); |
96ee3a4a TB |
2346 | gfc_undo_symbols (); |
2347 | return MATCH_YES; | |
2348 | } | |
2349 | ||
187de1ed FXC |
2350 | if (n == MATCH_NO) |
2351 | gfc_error ("Expected initialization expression at %C"); | |
2352 | if (n != MATCH_YES) | |
2353 | return MATCH_ERROR; | |
2354 | ||
2355 | if (e->rank != 0) | |
2356 | { | |
2357 | gfc_error ("Expected scalar initialization expression at %C"); | |
2358 | m = MATCH_ERROR; | |
2359 | goto no_match; | |
2360 | } | |
2361 | ||
2362 | msg = gfc_extract_int (e, kind); | |
2363 | *is_iso_c = e->ts.is_iso_c; | |
2364 | if (msg != NULL) | |
2365 | { | |
2366 | gfc_error (msg); | |
2367 | m = MATCH_ERROR; | |
2368 | goto no_match; | |
2369 | } | |
2370 | ||
2371 | gfc_free_expr (e); | |
2372 | ||
2373 | /* Ignore errors to this point, if we've gotten here. This means | |
2374 | we ignore the m=MATCH_ERROR from above. */ | |
2375 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2376 | { | |
2377 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2378 | m = MATCH_ERROR; | |
2379 | } | |
2380 | else | |
2381 | /* All tests passed. */ | |
2382 | m = MATCH_YES; | |
2383 | ||
2384 | if (m == MATCH_ERROR) | |
2385 | gfc_current_locus = where; | |
2386 | ||
2387 | /* Return what we know from the test(s). */ | |
2388 | return m; | |
2389 | ||
2390 | no_match: | |
2391 | gfc_free_expr (e); | |
2392 | gfc_current_locus = where; | |
2393 | return m; | |
2394 | } | |
2395 | ||
8234e5e0 | 2396 | |
6de9cd9a DN |
2397 | /* Match the various kind/length specifications in a CHARACTER |
2398 | declaration. We don't return MATCH_NO. */ | |
2399 | ||
8234e5e0 SK |
2400 | match |
2401 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2402 | { |
187de1ed | 2403 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2404 | gfc_charlen *cl; |
2405 | gfc_expr *len; | |
2406 | match m; | |
e69afb29 | 2407 | bool deferred; |
187de1ed | 2408 | |
6de9cd9a DN |
2409 | len = NULL; |
2410 | seen_length = 0; | |
187de1ed FXC |
2411 | kind = 0; |
2412 | is_iso_c = 0; | |
e69afb29 | 2413 | deferred = false; |
6de9cd9a DN |
2414 | |
2415 | /* Try the old-style specification first. */ | |
2416 | old_char_selector = 0; | |
2417 | ||
2767f2cc | 2418 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2419 | if (m != MATCH_NO) |
2420 | { | |
2421 | if (m == MATCH_YES) | |
2422 | old_char_selector = 1; | |
2423 | seen_length = 1; | |
2424 | goto done; | |
2425 | } | |
2426 | ||
2427 | m = gfc_match_char ('('); | |
2428 | if (m != MATCH_YES) | |
2429 | { | |
a8b3b0b6 | 2430 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2431 | goto done; |
2432 | } | |
2433 | ||
a8b3b0b6 | 2434 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2435 | if (gfc_match (" kind =") == MATCH_YES) |
2436 | { | |
187de1ed | 2437 | m = match_char_kind (&kind, &is_iso_c); |
a8b3b0b6 | 2438 | |
6de9cd9a DN |
2439 | if (m == MATCH_ERROR) |
2440 | goto done; | |
2441 | if (m == MATCH_NO) | |
2442 | goto syntax; | |
2443 | ||
2444 | if (gfc_match (" , len =") == MATCH_NO) | |
2445 | goto rparen; | |
2446 | ||
e69afb29 | 2447 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2448 | if (m == MATCH_NO) |
2449 | goto syntax; | |
2450 | if (m == MATCH_ERROR) | |
2451 | goto done; | |
2452 | seen_length = 1; | |
2453 | ||
2454 | goto rparen; | |
2455 | } | |
2456 | ||
66e4ab31 | 2457 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2458 | if (gfc_match (" len =") == MATCH_YES) |
2459 | { | |
e69afb29 | 2460 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2461 | if (m == MATCH_NO) |
2462 | goto syntax; | |
2463 | if (m == MATCH_ERROR) | |
2464 | goto done; | |
2465 | seen_length = 1; | |
2466 | ||
2467 | if (gfc_match_char (')') == MATCH_YES) | |
2468 | goto done; | |
2469 | ||
2470 | if (gfc_match (" , kind =") != MATCH_YES) | |
2471 | goto syntax; | |
2472 | ||
187de1ed FXC |
2473 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2474 | goto done; | |
6de9cd9a DN |
2475 | |
2476 | goto rparen; | |
2477 | } | |
2478 | ||
66e4ab31 | 2479 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2480 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2481 | if (m == MATCH_NO) |
2482 | goto syntax; | |
2483 | if (m == MATCH_ERROR) | |
2484 | goto done; | |
2485 | seen_length = 1; | |
2486 | ||
2487 | m = gfc_match_char (')'); | |
2488 | if (m == MATCH_YES) | |
2489 | goto done; | |
2490 | ||
2491 | if (gfc_match_char (',') != MATCH_YES) | |
2492 | goto syntax; | |
2493 | ||
a8b3b0b6 | 2494 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2495 | |
187de1ed | 2496 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2497 | if (m == MATCH_ERROR) |
2498 | goto done; | |
2499 | if (m == MATCH_NO) | |
2500 | goto syntax; | |
2501 | ||
2502 | rparen: | |
2503 | /* Require a right-paren at this point. */ | |
2504 | m = gfc_match_char (')'); | |
2505 | if (m == MATCH_YES) | |
2506 | goto done; | |
2507 | ||
2508 | syntax: | |
2509 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2510 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2511 | gfc_free_expr (len); |
2512 | return m; | |
6de9cd9a DN |
2513 | |
2514 | done: | |
a99d95a2 PT |
2515 | /* Deal with character functions after USE and IMPORT statements. */ |
2516 | if (gfc_matching_function) | |
1c8bcdf7 | 2517 | { |
a99d95a2 | 2518 | gfc_free_expr (len); |
1c8bcdf7 PT |
2519 | gfc_undo_symbols (); |
2520 | return MATCH_YES; | |
2521 | } | |
2522 | ||
6de9cd9a DN |
2523 | if (m != MATCH_YES) |
2524 | { | |
2525 | gfc_free_expr (len); | |
2526 | return m; | |
2527 | } | |
2528 | ||
2529 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2530 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2531 | |
2532 | if (seen_length == 0) | |
b7e75771 | 2533 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2534 | else |
5cd09fac | 2535 | cl->length = len; |
6de9cd9a | 2536 | |
bc21d315 | 2537 | ts->u.cl = cl; |
187de1ed | 2538 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2539 | ts->deferred = deferred; |
6de9cd9a | 2540 | |
eea58adb | 2541 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2542 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2543 | if (kind != 0) |
eea58adb | 2544 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2545 | of the named constants from iso_c_binding. */ |
2546 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2547 | else if (len != NULL) |
187de1ed FXC |
2548 | /* Here, we might have parsed something such as: character(c_char) |
2549 | In this case, the parsing code above grabs the c_char when | |
2550 | looking for the length (line 1690, roughly). it's the last | |
2551 | testcase for parsing the kind params of a character variable. | |
2552 | However, it's not actually the length. this seems like it | |
2553 | could be an error. | |
2554 | To see if the user used a C interop kind, test the expr | |
2555 | of the so called length, and see if it's C interoperable. */ | |
2556 | ts->is_c_interop = len->ts.is_iso_c; | |
a8b3b0b6 | 2557 | |
6de9cd9a DN |
2558 | return MATCH_YES; |
2559 | } | |
2560 | ||
2561 | ||
e74f1cc8 JW |
2562 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2563 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2564 | IMPLICIT statements. |
2565 | ||
d51347f9 | 2566 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2567 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2568 | statement correctly. */ |
2569 | ||
e2d29968 | 2570 | match |
e74f1cc8 | 2571 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2572 | { |
2573 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2574 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2575 | match m; |
8fc541d3 | 2576 | char c; |
0fb56814 | 2577 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2578 | const char *dt_name; |
6de9cd9a | 2579 | |
1c8bcdf7 PT |
2580 | /* A belt and braces check that the typespec is correctly being treated |
2581 | as a deferred characteristic association. */ | |
2582 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2583 | && (gfc_current_block ()->result->ts.kind == -1) |
2584 | && (ts->kind == -1); | |
6de9cd9a | 2585 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2586 | if (seen_deferred_kind) |
2587 | ts->kind = -1; | |
6de9cd9a | 2588 | |
a8b3b0b6 | 2589 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2590 | curr_binding_label = NULL; |
a8b3b0b6 | 2591 | |
5f700e6d AL |
2592 | if (gfc_match (" byte") == MATCH_YES) |
2593 | { | |
9717f7a1 | 2594 | if (gfc_notify_std (GFC_STD_GNU, "BYTE type at %C") |
5f700e6d AL |
2595 | == FAILURE) |
2596 | return MATCH_ERROR; | |
2597 | ||
2598 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2599 | { | |
2600 | gfc_error ("BYTE type used at %C " | |
2601 | "is not available on the target machine"); | |
2602 | return MATCH_ERROR; | |
2603 | } | |
d51347f9 | 2604 | |
5f700e6d AL |
2605 | ts->type = BT_INTEGER; |
2606 | ts->kind = 1; | |
2607 | return MATCH_YES; | |
2608 | } | |
2609 | ||
0fb56814 | 2610 | |
45a69325 | 2611 | m = gfc_match (" type ("); |
0fb56814 | 2612 | matched_type = (m == MATCH_YES); |
45a69325 TB |
2613 | if (matched_type) |
2614 | { | |
2615 | gfc_gobble_whitespace (); | |
2616 | if (gfc_peek_ascii_char () == '*') | |
2617 | { | |
2618 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2619 | return m; | |
2620 | if (gfc_current_state () == COMP_DERIVED) | |
2621 | { | |
2622 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2623 | return MATCH_ERROR; | |
2624 | } | |
9717f7a1 | 2625 | if (gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
45a69325 TB |
2626 | "at %C") == FAILURE) |
2627 | return MATCH_ERROR; | |
2628 | ts->type = BT_ASSUMED; | |
2629 | return MATCH_YES; | |
2630 | } | |
2631 | ||
2632 | m = gfc_match ("%n", name); | |
2633 | matched_type = (m == MATCH_YES); | |
2634 | } | |
2635 | ||
0fb56814 TB |
2636 | if ((matched_type && strcmp ("integer", name) == 0) |
2637 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2638 | { |
2639 | ts->type = BT_INTEGER; | |
9d64df18 | 2640 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2641 | goto get_kind; |
2642 | } | |
2643 | ||
0fb56814 TB |
2644 | if ((matched_type && strcmp ("character", name) == 0) |
2645 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2646 | { |
0fb56814 | 2647 | if (matched_type |
9717f7a1 | 2648 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
0fb56814 TB |
2649 | "intrinsic-type-spec at %C") == FAILURE) |
2650 | return MATCH_ERROR; | |
2651 | ||
6de9cd9a | 2652 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2653 | if (implicit_flag == 0) |
0fb56814 | 2654 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2655 | else |
0fb56814 TB |
2656 | m = MATCH_YES; |
2657 | ||
2658 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2659 | m = MATCH_ERROR; | |
2660 | ||
2661 | return m; | |
6de9cd9a DN |
2662 | } |
2663 | ||
0fb56814 TB |
2664 | if ((matched_type && strcmp ("real", name) == 0) |
2665 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2666 | { |
2667 | ts->type = BT_REAL; | |
9d64df18 | 2668 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2669 | goto get_kind; |
2670 | } | |
2671 | ||
0fb56814 TB |
2672 | if ((matched_type |
2673 | && (strcmp ("doubleprecision", name) == 0 | |
2674 | || (strcmp ("double", name) == 0 | |
2675 | && gfc_match (" precision") == MATCH_YES))) | |
2676 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2677 | { |
0fb56814 | 2678 | if (matched_type |
9717f7a1 | 2679 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
0fb56814 TB |
2680 | "intrinsic-type-spec at %C") == FAILURE) |
2681 | return MATCH_ERROR; | |
2682 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2683 | return MATCH_ERROR; | |
2684 | ||
6de9cd9a | 2685 | ts->type = BT_REAL; |
9d64df18 | 2686 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2687 | return MATCH_YES; |
2688 | } | |
2689 | ||
0fb56814 TB |
2690 | if ((matched_type && strcmp ("complex", name) == 0) |
2691 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2692 | { |
2693 | ts->type = BT_COMPLEX; | |
9d64df18 | 2694 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2695 | goto get_kind; |
2696 | } | |
2697 | ||
0fb56814 TB |
2698 | if ((matched_type |
2699 | && (strcmp ("doublecomplex", name) == 0 | |
2700 | || (strcmp ("double", name) == 0 | |
2701 | && gfc_match (" complex") == MATCH_YES))) | |
2702 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2703 | { |
9717f7a1 | 2704 | if (gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C") |
0fb56814 TB |
2705 | == FAILURE) |
2706 | return MATCH_ERROR; | |
2707 | ||
2708 | if (matched_type | |
9717f7a1 | 2709 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
0fb56814 TB |
2710 | "intrinsic-type-spec at %C") == FAILURE) |
2711 | return MATCH_ERROR; | |
2712 | ||
2713 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2714 | return MATCH_ERROR; |
2715 | ||
6de9cd9a | 2716 | ts->type = BT_COMPLEX; |
9d64df18 | 2717 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2718 | return MATCH_YES; |
2719 | } | |
2720 | ||
0fb56814 TB |
2721 | if ((matched_type && strcmp ("logical", name) == 0) |
2722 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2723 | { |
2724 | ts->type = BT_LOGICAL; | |
9d64df18 | 2725 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2726 | goto get_kind; |
2727 | } | |
2728 | ||
0fb56814 TB |
2729 | if (matched_type) |
2730 | m = gfc_match_char (')'); | |
2731 | ||
cf2b3c22 TB |
2732 | if (m == MATCH_YES) |
2733 | ts->type = BT_DERIVED; | |
2734 | else | |
727e8544 | 2735 | { |
528622fd JW |
2736 | /* Match CLASS declarations. */ |
2737 | m = gfc_match (" class ( * )"); | |
2738 | if (m == MATCH_ERROR) | |
2739 | return MATCH_ERROR; | |
2740 | else if (m == MATCH_YES) | |
2741 | { | |
2742 | gfc_fatal_error ("Unlimited polymorphism at %C not yet supported"); | |
2743 | return MATCH_ERROR; | |
2744 | } | |
2745 | ||
727e8544 JW |
2746 | m = gfc_match (" class ( %n )", name); |
2747 | if (m != MATCH_YES) | |
2748 | return m; | |
cf2b3c22 | 2749 | ts->type = BT_CLASS; |
727e8544 | 2750 | |
9717f7a1 | 2751 | if (gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C") |
e74f1cc8 JW |
2752 | == FAILURE) |
2753 | return MATCH_ERROR; | |
727e8544 | 2754 | } |
6de9cd9a | 2755 | |
1c8bcdf7 PT |
2756 | /* Defer association of the derived type until the end of the |
2757 | specification block. However, if the derived type can be | |
2758 | found, add it to the typespec. */ | |
2759 | if (gfc_matching_function) | |
e2d29968 | 2760 | { |
bc21d315 | 2761 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2762 | if (gfc_current_state () != COMP_INTERFACE |
2763 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2764 | { |
2765 | sym = gfc_find_dt_in_generic (sym); | |
2766 | ts->u.derived = sym; | |
2767 | } | |
e2d29968 PT |
2768 | return MATCH_YES; |
2769 | } | |
2770 | ||
2771 | /* Search for the name but allow the components to be defined later. If | |
2772 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 2773 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 2774 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
2775 | symtree with the all lower-case name contains the associated |
2776 | generic function. */ | |
2777 | dt_name = gfc_get_string ("%c%s", | |
2778 | (char) TOUPPER ((unsigned char) name[0]), | |
2779 | (const char*)&name[1]); | |
1c8bcdf7 | 2780 | sym = NULL; |
c3f34952 TB |
2781 | dt_sym = NULL; |
2782 | if (ts->kind != -1) | |
6de9cd9a | 2783 | { |
c3f34952 TB |
2784 | gfc_get_ha_symbol (name, &sym); |
2785 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2786 | { | |
2787 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2788 | return MATCH_ERROR; | |
2789 | } | |
2790 | if (sym->generic && !dt_sym) | |
2791 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2792 | } |
e2d29968 PT |
2793 | else if (ts->kind == -1) |
2794 | { | |
1c8bcdf7 PT |
2795 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2796 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2797 | gfc_find_symbol (name, NULL, iface, &sym); |
2798 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
e2d29968 PT |
2799 | { |
2800 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2801 | return MATCH_ERROR; | |
2802 | } | |
c3f34952 TB |
2803 | if (sym && sym->generic && !dt_sym) |
2804 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2805 | |
1c8bcdf7 | 2806 | ts->kind = 0; |
e2d29968 PT |
2807 | if (sym == NULL) |
2808 | return MATCH_NO; | |
2809 | } | |
6de9cd9a | 2810 | |
c3f34952 TB |
2811 | if ((sym->attr.flavor != FL_UNKNOWN |
2812 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2813 | || sym->attr.subroutine) | |
2814 | { | |
2815 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2816 | "entity at %L, which has the same name", name, | |
2817 | &sym->declared_at); | |
2818 | return MATCH_ERROR; | |
2819 | } | |
6de9cd9a | 2820 | |
1c8bcdf7 | 2821 | gfc_set_sym_referenced (sym); |
c3f34952 TB |
2822 | if (!sym->attr.generic |
2823 | && gfc_add_generic (&sym->attr, sym->name, NULL) == FAILURE) | |
2824 | return MATCH_ERROR; | |
2825 | ||
2826 | if (!sym->attr.function | |
2827 | && gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
2828 | return MATCH_ERROR; | |
2829 | ||
2830 | if (!dt_sym) | |
2831 | { | |
2832 | gfc_interface *intr, *head; | |
2833 | ||
2834 | /* Use upper case to save the actual derived-type symbol. */ | |
2835 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2836 | dt_sym->name = gfc_get_string (sym->name); | |
2837 | head = sym->generic; | |
2838 | intr = gfc_get_interface (); | |
2839 | intr->sym = dt_sym; | |
2840 | intr->where = gfc_current_locus; | |
2841 | intr->next = head; | |
2842 | sym->generic = intr; | |
2843 | sym->attr.if_source = IFSRC_DECL; | |
2844 | } | |
2845 | ||
2846 | gfc_set_sym_referenced (dt_sym); | |
2847 | ||
2848 | if (dt_sym->attr.flavor != FL_DERIVED | |
2849 | && gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL) | |
2850 | == FAILURE) | |
2851 | return MATCH_ERROR; | |
2852 | ||
2853 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
2854 | |
2855 | return MATCH_YES; | |
2856 | ||
2857 | get_kind: | |
0fb56814 | 2858 | if (matched_type |
9717f7a1 | 2859 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
0fb56814 TB |
2860 | "intrinsic-type-spec at %C") == FAILURE) |
2861 | return MATCH_ERROR; | |
2862 | ||
6de9cd9a DN |
2863 | /* For all types except double, derived and character, look for an |
2864 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2865 | if (implicit_flag == 1) |
0fb56814 TB |
2866 | { |
2867 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2868 | return MATCH_ERROR; | |
2869 | ||
2870 | return MATCH_YES; | |
2871 | } | |
6de9cd9a | 2872 | |
0ff0dfbf TS |
2873 | if (gfc_current_form == FORM_FREE) |
2874 | { | |
0b3624f6 SK |
2875 | c = gfc_peek_ascii_char (); |
2876 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 2877 | && c != ':' && c != ',') |
0fb56814 TB |
2878 | { |
2879 | if (matched_type && c == ')') | |
2880 | { | |
2881 | gfc_next_ascii_char (); | |
2882 | return MATCH_YES; | |
2883 | } | |
2884 | return MATCH_NO; | |
2885 | } | |
0ff0dfbf TS |
2886 | } |
2887 | ||
e2d29968 | 2888 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a DN |
2889 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2890 | m = gfc_match_old_kind_spec (ts); | |
2891 | ||
0fb56814 TB |
2892 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2893 | return MATCH_ERROR; | |
2894 | ||
1c8bcdf7 PT |
2895 | /* Defer association of the KIND expression of function results |
2896 | until after USE and IMPORT statements. */ | |
2897 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2898 | || gfc_matching_function) | |
2899 | return MATCH_YES; | |
2900 | ||
6de9cd9a DN |
2901 | if (m == MATCH_NO) |
2902 | m = MATCH_YES; /* No kind specifier found. */ | |
2903 | ||
2904 | return m; | |
2905 | } | |
2906 | ||
2907 | ||
e5ddaa24 TS |
2908 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2909 | already matched in parse.c, or we would not end up here in the | |
2910 | first place. So the only thing we need to check, is if there is | |
2911 | trailing garbage. If not, the match is successful. */ | |
2912 | ||
2913 | match | |
2914 | gfc_match_implicit_none (void) | |
2915 | { | |
e5ddaa24 TS |
2916 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2917 | } | |
2918 | ||
2919 | ||
2920 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2921 | ||
2922 | static match | |
1107b970 | 2923 | match_implicit_range (void) |
e5ddaa24 | 2924 | { |
8fc541d3 FXC |
2925 | char c, c1, c2; |
2926 | int inner; | |
e5ddaa24 TS |
2927 | locus cur_loc; |
2928 | ||
2929 | cur_loc = gfc_current_locus; | |
2930 | ||
2931 | gfc_gobble_whitespace (); | |
8fc541d3 | 2932 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2933 | if (c != '(') |
2934 | { | |
2935 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2936 | goto bad; | |
2937 | } | |
2938 | ||
2939 | inner = 1; | |
2940 | while (inner) | |
2941 | { | |
2942 | gfc_gobble_whitespace (); | |
8fc541d3 | 2943 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2944 | if (!ISALPHA (c1)) |
2945 | goto bad; | |
2946 | ||
2947 | gfc_gobble_whitespace (); | |
8fc541d3 | 2948 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2949 | |
2950 | switch (c) | |
2951 | { | |
2952 | case ')': | |
66e4ab31 | 2953 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2954 | |
2955 | case ',': | |
2956 | c2 = c1; | |
2957 | break; | |
2958 | ||
2959 | case '-': | |
2960 | gfc_gobble_whitespace (); | |
8fc541d3 | 2961 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
2962 | if (!ISALPHA (c2)) |
2963 | goto bad; | |
2964 | ||
2965 | gfc_gobble_whitespace (); | |
8fc541d3 | 2966 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
2967 | |
2968 | if ((c != ',') && (c != ')')) | |
2969 | goto bad; | |
2970 | if (c == ')') | |
2971 | inner = 0; | |
2972 | ||
2973 | break; | |
2974 | ||
2975 | default: | |
2976 | goto bad; | |
2977 | } | |
2978 | ||
2979 | if (c1 > c2) | |
2980 | { | |
2981 | gfc_error ("Letters must be in alphabetic order in " | |
2982 | "IMPLICIT statement at %C"); | |
2983 | goto bad; | |
2984 | } | |
2985 | ||
2986 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
2987 | implicits from this IMPLICIT statement. We do not check for |
2988 | conflicts with whatever earlier IMPLICIT statements may have | |
2989 | set. This is done when we've successfully finished matching | |
2990 | the current one. */ | |
1107b970 | 2991 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
e5ddaa24 TS |
2992 | goto bad; |
2993 | } | |
2994 | ||
2995 | return MATCH_YES; | |
2996 | ||
2997 | bad: | |
2998 | gfc_syntax_error (ST_IMPLICIT); | |
2999 | ||
3000 | gfc_current_locus = cur_loc; | |
3001 | return MATCH_ERROR; | |
3002 | } | |
3003 | ||
3004 | ||
3005 | /* Match an IMPLICIT statement, storing the types for | |
3006 | gfc_set_implicit() if the statement is accepted by the parser. | |
3007 | There is a strange looking, but legal syntactic construction | |
3008 | possible. It looks like: | |
3009 | ||
3010 | IMPLICIT INTEGER (a-b) (c-d) | |
3011 | ||
3012 | This is legal if "a-b" is a constant expression that happens to | |
3013 | equal one of the legal kinds for integers. The real problem | |
3014 | happens with an implicit specification that looks like: | |
3015 | ||
3016 | IMPLICIT INTEGER (a-b) | |
3017 | ||
3018 | In this case, a typespec matcher that is "greedy" (as most of the | |
3019 | matchers are) gobbles the character range as a kindspec, leaving | |
3020 | nothing left. We therefore have to go a bit more slowly in the | |
3021 | matching process by inhibiting the kindspec checking during | |
3022 | typespec matching and checking for a kind later. */ | |
3023 | ||
3024 | match | |
3025 | gfc_match_implicit (void) | |
3026 | { | |
3027 | gfc_typespec ts; | |
3028 | locus cur_loc; | |
8fc541d3 | 3029 | char c; |
e5ddaa24 TS |
3030 | match m; |
3031 | ||
44000dbb JD |
3032 | gfc_clear_ts (&ts); |
3033 | ||
e5ddaa24 TS |
3034 | /* We don't allow empty implicit statements. */ |
3035 | if (gfc_match_eos () == MATCH_YES) | |
3036 | { | |
3037 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3038 | return MATCH_ERROR; | |
3039 | } | |
3040 | ||
e5ddaa24 TS |
3041 | do |
3042 | { | |
1107b970 PB |
3043 | /* First cleanup. */ |
3044 | gfc_clear_new_implicit (); | |
3045 | ||
e5ddaa24 | 3046 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3047 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3048 | if (m == MATCH_ERROR) |
3049 | goto error; | |
3050 | if (m == MATCH_NO) | |
3051 | goto syntax; | |
3052 | ||
3053 | cur_loc = gfc_current_locus; | |
1107b970 | 3054 | m = match_implicit_range (); |
e5ddaa24 TS |
3055 | |
3056 | if (m == MATCH_YES) | |
3057 | { | |
1107b970 | 3058 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3059 | gfc_gobble_whitespace (); |
8fc541d3 | 3060 | c = gfc_next_ascii_char (); |
e5ddaa24 | 3061 | if ((c == '\n') || (c == ',')) |
1107b970 PB |
3062 | { |
3063 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3064 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3065 | { |
9d64df18 | 3066 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3067 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3068 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3069 | NULL, 1); | |
1107b970 PB |
3070 | } |
3071 | ||
3072 | /* Record the Successful match. */ | |
3073 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
3074 | return MATCH_ERROR; | |
3075 | continue; | |
3076 | } | |
e5ddaa24 TS |
3077 | |
3078 | gfc_current_locus = cur_loc; | |
3079 | } | |
3080 | ||
1107b970 PB |
3081 | /* Discard the (incorrectly) matched range. */ |
3082 | gfc_clear_new_implicit (); | |
3083 | ||
3084 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3085 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3086 | m = gfc_match_char_spec (&ts); |
1107b970 | 3087 | else |
e5ddaa24 | 3088 | { |
e2d29968 | 3089 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3090 | if (m == MATCH_NO) |
1107b970 PB |
3091 | { |
3092 | m = gfc_match_old_kind_spec (&ts); | |
3093 | if (m == MATCH_ERROR) | |
3094 | goto error; | |
3095 | if (m == MATCH_NO) | |
3096 | goto syntax; | |
3097 | } | |
e5ddaa24 | 3098 | } |
1107b970 PB |
3099 | if (m == MATCH_ERROR) |
3100 | goto error; | |
e5ddaa24 | 3101 | |
1107b970 | 3102 | m = match_implicit_range (); |
e5ddaa24 TS |
3103 | if (m == MATCH_ERROR) |
3104 | goto error; | |
3105 | if (m == MATCH_NO) | |
3106 | goto syntax; | |
3107 | ||
3108 | gfc_gobble_whitespace (); | |
8fc541d3 | 3109 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3110 | if ((c != '\n') && (c != ',')) |
3111 | goto syntax; | |
3112 | ||
1107b970 PB |
3113 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
3114 | return MATCH_ERROR; | |
e5ddaa24 TS |
3115 | } |
3116 | while (c == ','); | |
3117 | ||
1107b970 | 3118 | return MATCH_YES; |
e5ddaa24 TS |
3119 | |
3120 | syntax: | |
3121 | gfc_syntax_error (ST_IMPLICIT); | |
3122 | ||
3123 | error: | |
3124 | return MATCH_ERROR; | |
3125 | } | |
3126 | ||
66e4ab31 | 3127 | |
8998be20 TB |
3128 | match |
3129 | gfc_match_import (void) | |
3130 | { | |
3131 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3132 | match m; | |
3133 | gfc_symbol *sym; | |
3134 | gfc_symtree *st; | |
3135 | ||
66e4ab31 SK |
3136 | if (gfc_current_ns->proc_name == NULL |
3137 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3138 | { |
3139 | gfc_error ("IMPORT statement at %C only permitted in " | |
3140 | "an INTERFACE body"); | |
3141 | return MATCH_ERROR; | |
3142 | } | |
3143 | ||
9717f7a1 | 3144 | if (gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C") |
8998be20 TB |
3145 | == FAILURE) |
3146 | return MATCH_ERROR; | |
3147 | ||
3148 | if (gfc_match_eos () == MATCH_YES) | |
3149 | { | |
3150 | /* All host variables should be imported. */ | |
3151 | gfc_current_ns->has_import_set = 1; | |
3152 | return MATCH_YES; | |
3153 | } | |
3154 | ||
3155 | if (gfc_match (" ::") == MATCH_YES) | |
3156 | { | |
3157 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3158 | { |
3159 | gfc_error ("Expecting list of named entities at %C"); | |
3160 | return MATCH_ERROR; | |
3161 | } | |
8998be20 TB |
3162 | } |
3163 | ||
3164 | for(;;) | |
3165 | { | |
2e8d9212 | 3166 | sym = NULL; |
8998be20 TB |
3167 | m = gfc_match (" %n", name); |
3168 | switch (m) | |
3169 | { | |
3170 | case MATCH_YES: | |
36d3fb4c | 3171 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3172 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
3173 | { |
3174 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3175 | return MATCH_ERROR; | |
3176 | } | |
4e2cf5f5 | 3177 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3178 | && gfc_find_symbol (name, |
3179 | gfc_current_ns->proc_name->ns->parent, | |
3180 | 1, &sym)) | |
636dff67 SK |
3181 | { |
3182 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3183 | return MATCH_ERROR; | |
3184 | } | |
3185 | ||
3186 | if (sym == NULL) | |
3187 | { | |
3188 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3189 | "at %C - does not exist.", name); | |
3190 | return MATCH_ERROR; | |
3191 | } | |
3192 | ||
d51347f9 | 3193 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
636dff67 SK |
3194 | { |
3195 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3196 | "at %C.", name); | |
3197 | goto next_item; | |
3198 | } | |
3199 | ||
bc2a4733 | 3200 | st = gfc_new_symtree (&gfc_current_ns->sym_root, sym->name); |
636dff67 SK |
3201 | st->n.sym = sym; |
3202 | sym->refs++; | |
5a8af0b4 | 3203 | sym->attr.imported = 1; |
8998be20 | 3204 | |
c3f34952 TB |
3205 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3206 | { | |
3207 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3208 | letter of the name capitalized; the symtree with the all |
c3f34952 TB |
3209 | lower-case name contains the associated generic function. */ |
3210 | st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
3211 | gfc_get_string ("%c%s", | |
3212 | (char) TOUPPER ((unsigned char) sym->name[0]), | |
3213 | &sym->name[1])); | |
3214 | st->n.sym = sym; | |
3215 | sym->refs++; | |
3216 | sym->attr.imported = 1; | |
3217 | } | |
3218 | ||
8998be20 TB |
3219 | goto next_item; |
3220 | ||
3221 | case MATCH_NO: | |
3222 | break; | |
3223 | ||
3224 | case MATCH_ERROR: | |
3225 | return MATCH_ERROR; | |
3226 | } | |
3227 | ||
3228 | next_item: | |
3229 | if (gfc_match_eos () == MATCH_YES) | |
3230 | break; | |
3231 | if (gfc_match_char (',') != MATCH_YES) | |
3232 | goto syntax; | |
3233 | } | |
3234 | ||
3235 | return MATCH_YES; | |
3236 | ||
3237 | syntax: | |
3238 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3239 | return MATCH_ERROR; | |
3240 | } | |
e5ddaa24 | 3241 | |
66e4ab31 | 3242 | |
f2449db4 RS |
3243 | /* A minimal implementation of gfc_match without whitespace, escape |
3244 | characters or variable arguments. Returns true if the next | |
3245 | characters match the TARGET template exactly. */ | |
3246 | ||
3247 | static bool | |
3248 | match_string_p (const char *target) | |
3249 | { | |
3250 | const char *p; | |
3251 | ||
3252 | for (p = target; *p; p++) | |
8fc541d3 | 3253 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3254 | return false; |
3255 | return true; | |
3256 | } | |
3257 | ||
6de9cd9a DN |
3258 | /* Matches an attribute specification including array specs. If |
3259 | successful, leaves the variables current_attr and current_as | |
3260 | holding the specification. Also sets the colon_seen variable for | |
3261 | later use by matchers associated with initializations. | |
3262 | ||
3263 | This subroutine is a little tricky in the sense that we don't know | |
3264 | if we really have an attr-spec until we hit the double colon. | |
3265 | Until that time, we can only return MATCH_NO. This forces us to | |
3266 | check for duplicate specification at this level. */ | |
3267 | ||
3268 | static match | |
3269 | match_attr_spec (void) | |
3270 | { | |
6de9cd9a | 3271 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3272 | enum |
6de9cd9a DN |
3273 | { GFC_DECL_BEGIN = 0, |
3274 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3275 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3276 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3277 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3278 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3279 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3280 | }; |
6de9cd9a DN |
3281 | |
3282 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3283 | #define NUM_DECL GFC_DECL_END | |
3284 | ||
6de9cd9a DN |
3285 | locus start, seen_at[NUM_DECL]; |
3286 | int seen[NUM_DECL]; | |
09639a83 | 3287 | unsigned int d; |
6de9cd9a DN |
3288 | const char *attr; |
3289 | match m; | |
17b1d2a0 | 3290 | gfc_try t; |
6de9cd9a DN |
3291 | |
3292 | gfc_clear_attr (¤t_attr); | |
63645982 | 3293 | start = gfc_current_locus; |
6de9cd9a DN |
3294 | |
3295 | current_as = NULL; | |
3296 | colon_seen = 0; | |
3297 | ||
3298 | /* See if we get all of the keywords up to the final double colon. */ | |
3299 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3300 | seen[d] = 0; | |
3301 | ||
3302 | for (;;) | |
3303 | { | |
8fc541d3 | 3304 | char ch; |
a8b3b0b6 | 3305 | |
f2449db4 RS |
3306 | d = DECL_NONE; |
3307 | gfc_gobble_whitespace (); | |
3308 | ||
8fc541d3 | 3309 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3310 | if (ch == ':') |
3311 | { | |
3312 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3313 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3314 | break; |
3315 | } | |
3316 | else if (ch == ',') | |
a8b3b0b6 | 3317 | { |
a8b3b0b6 | 3318 | gfc_gobble_whitespace (); |
8fc541d3 | 3319 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3320 | { |
f2449db4 | 3321 | case 'a': |
1eee5628 TB |
3322 | gfc_next_ascii_char (); |
3323 | switch (gfc_next_ascii_char ()) | |
3324 | { | |
3325 | case 'l': | |
3326 | if (match_string_p ("locatable")) | |
3327 | { | |
3328 | /* Matched "allocatable". */ | |
3329 | d = DECL_ALLOCATABLE; | |
3330 | } | |
3331 | break; | |
3332 | ||
3333 | case 's': | |
3334 | if (match_string_p ("ynchronous")) | |
3335 | { | |
3336 | /* Matched "asynchronous". */ | |
3337 | d = DECL_ASYNCHRONOUS; | |
3338 | } | |
3339 | break; | |
3340 | } | |
fe4e525c | 3341 | break; |
f2449db4 RS |
3342 | |
3343 | case 'b': | |
a8b3b0b6 | 3344 | /* Try and match the bind(c). */ |
1eabf70a | 3345 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3346 | if (m == MATCH_YES) |
a8b3b0b6 | 3347 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3348 | else if (m == MATCH_ERROR) |
3349 | goto cleanup; | |
f2449db4 RS |
3350 | break; |
3351 | ||
be59db2d | 3352 | case 'c': |
fe4e525c TB |
3353 | gfc_next_ascii_char (); |
3354 | if ('o' != gfc_next_ascii_char ()) | |
3355 | break; | |
3356 | switch (gfc_next_ascii_char ()) | |
3357 | { | |
3358 | case 'd': | |
3359 | if (match_string_p ("imension")) | |
3360 | { | |
3361 | d = DECL_CODIMENSION; | |
3362 | break; | |
3363 | } | |
3364 | case 'n': | |
3365 | if (match_string_p ("tiguous")) | |
3366 | { | |
3367 | d = DECL_CONTIGUOUS; | |
3368 | break; | |
3369 | } | |
3370 | } | |
be59db2d TB |
3371 | break; |
3372 | ||
f2449db4 RS |
3373 | case 'd': |
3374 | if (match_string_p ("dimension")) | |
3375 | d = DECL_DIMENSION; | |
3376 | break; | |
3377 | ||
3378 | case 'e': | |
3379 | if (match_string_p ("external")) | |
3380 | d = DECL_EXTERNAL; | |
3381 | break; | |
3382 | ||
3383 | case 'i': | |
3384 | if (match_string_p ("int")) | |
3385 | { | |
8fc541d3 | 3386 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3387 | if (ch == 'e') |
3388 | { | |
3389 | if (match_string_p ("nt")) | |
3390 | { | |
3391 | /* Matched "intent". */ | |
3392 | /* TODO: Call match_intent_spec from here. */ | |
3393 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3394 | d = DECL_INOUT; | |
3395 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3396 | d = DECL_IN; | |
3397 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3398 | d = DECL_OUT; | |
3399 | } | |
3400 | } | |
3401 | else if (ch == 'r') | |
3402 | { | |
3403 | if (match_string_p ("insic")) | |
3404 | { | |
3405 | /* Matched "intrinsic". */ | |
3406 | d = DECL_INTRINSIC; | |
3407 | } | |
3408 | } | |
3409 | } | |
3410 | break; | |
3411 | ||
3412 | case 'o': | |
3413 | if (match_string_p ("optional")) | |
3414 | d = DECL_OPTIONAL; | |
3415 | break; | |
3416 | ||
3417 | case 'p': | |
8fc541d3 FXC |
3418 | gfc_next_ascii_char (); |
3419 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3420 | { |
3421 | case 'a': | |
3422 | if (match_string_p ("rameter")) | |
3423 | { | |
3424 | /* Matched "parameter". */ | |
3425 | d = DECL_PARAMETER; | |
3426 | } | |
3427 | break; | |
3428 | ||
3429 | case 'o': | |
3430 | if (match_string_p ("inter")) | |
3431 | { | |
3432 | /* Matched "pointer". */ | |
3433 | d = DECL_POINTER; | |
3434 | } | |
3435 | break; | |
3436 | ||
3437 | case 'r': | |
8fc541d3 | 3438 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3439 | if (ch == 'i') |
3440 | { | |
3441 | if (match_string_p ("vate")) | |
3442 | { | |
3443 | /* Matched "private". */ | |
3444 | d = DECL_PRIVATE; | |
3445 | } | |
3446 | } | |
3447 | else if (ch == 'o') | |
3448 | { | |
3449 | if (match_string_p ("tected")) | |
3450 | { | |
3451 | /* Matched "protected". */ | |
3452 | d = DECL_PROTECTED; | |
3453 | } | |
3454 | } | |
3455 | break; | |
3456 | ||
3457 | case 'u': | |
3458 | if (match_string_p ("blic")) | |
3459 | { | |
3460 | /* Matched "public". */ | |
3461 | d = DECL_PUBLIC; | |
3462 | } | |
3463 | break; | |
3464 | } | |
3465 | break; | |
3466 | ||
3467 | case 's': | |
3468 | if (match_string_p ("save")) | |
3469 | d = DECL_SAVE; | |
3470 | break; | |
3471 | ||
3472 | case 't': | |
3473 | if (match_string_p ("target")) | |
3474 | d = DECL_TARGET; | |
3475 | break; | |
3476 | ||
3477 | case 'v': | |
8fc541d3 FXC |
3478 | gfc_next_ascii_char (); |
3479 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3480 | if (ch == 'a') |
3481 | { | |
3482 | if (match_string_p ("lue")) | |
3483 | { | |
3484 | /* Matched "value". */ | |
3485 | d = DECL_VALUE; | |
3486 | } | |
3487 | } | |
3488 | else if (ch == 'o') | |
3489 | { | |
3490 | if (match_string_p ("latile")) | |
3491 | { | |
3492 | /* Matched "volatile". */ | |
3493 | d = DECL_VOLATILE; | |
3494 | } | |
3495 | } | |
3496 | break; | |
a8b3b0b6 CR |
3497 | } |
3498 | } | |
d468bcdb | 3499 | |
f2449db4 RS |
3500 | /* No double colon and no recognizable decl_type, so assume that |
3501 | we've been looking at something else the whole time. */ | |
3502 | if (d == DECL_NONE) | |
3503 | { | |
3504 | m = MATCH_NO; | |
3505 | goto cleanup; | |
3506 | } | |
d51347f9 | 3507 | |
acb388a0 JD |
3508 | /* Check to make sure any parens are paired up correctly. */ |
3509 | if (gfc_match_parens () == MATCH_ERROR) | |
3510 | { | |
3511 | m = MATCH_ERROR; | |
3512 | goto cleanup; | |
3513 | } | |
3514 | ||
6de9cd9a | 3515 | seen[d]++; |
63645982 | 3516 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3517 | |
d3a9eea2 | 3518 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3519 | { |
d3a9eea2 | 3520 | gfc_array_spec *as = NULL; |
6de9cd9a | 3521 | |
d3a9eea2 TB |
3522 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3523 | d == DECL_CODIMENSION); | |
3524 | ||
3525 | if (current_as == NULL) | |
3526 | current_as = as; | |
3527 | else if (m == MATCH_YES) | |
6de9cd9a | 3528 | { |
d3a9eea2 | 3529 | merge_array_spec (as, current_as, false); |
cede9502 | 3530 | free (as); |
6de9cd9a DN |
3531 | } |
3532 | ||
be59db2d TB |
3533 | if (m == MATCH_NO) |
3534 | { | |
d3a9eea2 TB |
3535 | if (d == DECL_CODIMENSION) |
3536 | gfc_error ("Missing codimension specification at %C"); | |
3537 | else | |
3538 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3539 | m = MATCH_ERROR; |
3540 | } | |
3541 | ||
3542 | if (m == MATCH_ERROR) | |
3543 | goto cleanup; | |
3544 | } | |
6de9cd9a DN |
3545 | } |
3546 | ||
6de9cd9a DN |
3547 | /* Since we've seen a double colon, we have to be looking at an |
3548 | attr-spec. This means that we can now issue errors. */ | |
3549 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3550 | if (seen[d] > 1) | |
3551 | { | |
3552 | switch (d) | |
3553 | { | |
3554 | case DECL_ALLOCATABLE: | |
3555 | attr = "ALLOCATABLE"; | |
3556 | break; | |
1eee5628 TB |
3557 | case DECL_ASYNCHRONOUS: |
3558 | attr = "ASYNCHRONOUS"; | |
3559 | break; | |
be59db2d TB |
3560 | case DECL_CODIMENSION: |
3561 | attr = "CODIMENSION"; | |
3562 | break; | |
fe4e525c TB |
3563 | case DECL_CONTIGUOUS: |
3564 | attr = "CONTIGUOUS"; | |
3565 | break; | |
6de9cd9a DN |
3566 | case DECL_DIMENSION: |
3567 | attr = "DIMENSION"; | |
3568 | break; | |
3569 | case DECL_EXTERNAL: | |
3570 | attr = "EXTERNAL"; | |
3571 | break; | |
3572 | case DECL_IN: | |
3573 | attr = "INTENT (IN)"; | |
3574 | break; | |
3575 | case DECL_OUT: | |
3576 | attr = "INTENT (OUT)"; | |
3577 | break; | |
3578 | case DECL_INOUT: | |
3579 | attr = "INTENT (IN OUT)"; | |
3580 | break; | |
3581 | case DECL_INTRINSIC: | |
3582 | attr = "INTRINSIC"; | |
3583 | break; | |
3584 | case DECL_OPTIONAL: | |
3585 | attr = "OPTIONAL"; | |
3586 | break; | |
3587 | case DECL_PARAMETER: | |
3588 | attr = "PARAMETER"; | |
3589 | break; | |
3590 | case DECL_POINTER: | |
3591 | attr = "POINTER"; | |
3592 | break; | |
ee7e677f TB |
3593 | case DECL_PROTECTED: |
3594 | attr = "PROTECTED"; | |
3595 | break; | |
6de9cd9a DN |
3596 | case DECL_PRIVATE: |
3597 | attr = "PRIVATE"; | |
3598 | break; | |
3599 | case DECL_PUBLIC: | |
3600 | attr = "PUBLIC"; | |
3601 | break; | |
3602 | case DECL_SAVE: | |
3603 | attr = "SAVE"; | |
3604 | break; | |
3605 | case DECL_TARGET: | |
3606 | attr = "TARGET"; | |
3607 | break; | |
a8b3b0b6 CR |
3608 | case DECL_IS_BIND_C: |
3609 | attr = "IS_BIND_C"; | |
3610 | break; | |
3611 | case DECL_VALUE: | |
3612 | attr = "VALUE"; | |
3613 | break; | |
775e6c3a TB |
3614 | case DECL_VOLATILE: |
3615 | attr = "VOLATILE"; | |
3616 | break; | |
6de9cd9a | 3617 | default: |
66e4ab31 | 3618 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3619 | } |
3620 | ||
3621 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3622 | m = MATCH_ERROR; | |
3623 | goto cleanup; | |
3624 | } | |
3625 | ||
3626 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3627 | to the current attribute. */ | |
3628 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3629 | { | |
3630 | if (seen[d] == 0) | |
3631 | continue; | |
3632 | ||
3633 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3634 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3635 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3636 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3637 | { |
5046aff5 PT |
3638 | if (d == DECL_ALLOCATABLE) |
3639 | { | |
9717f7a1 | 3640 | if (gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
636dff67 | 3641 | "attribute at %C in a TYPE definition") |
d51347f9 | 3642 | == FAILURE) |
5046aff5 PT |
3643 | { |
3644 | m = MATCH_ERROR; | |
3645 | goto cleanup; | |
3646 | } | |
636dff67 SK |
3647 | } |
3648 | else | |
5046aff5 PT |
3649 | { |
3650 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3651 | &seen_at[d]); |
5046aff5 PT |
3652 | m = MATCH_ERROR; |
3653 | goto cleanup; | |
3654 | } | |
6de9cd9a DN |
3655 | } |
3656 | ||
4213f93b | 3657 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3658 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3659 | { |
3660 | if (d == DECL_PRIVATE) | |
3661 | attr = "PRIVATE"; | |
3662 | else | |
3663 | attr = "PUBLIC"; | |
d51347f9 TB |
3664 | if (gfc_current_state () == COMP_DERIVED |
3665 | && gfc_state_stack->previous | |
3666 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3667 | { | |
9717f7a1 | 3668 | if (gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
d51347f9 TB |
3669 | "at %L in a TYPE definition", attr, |
3670 | &seen_at[d]) | |
3671 | == FAILURE) | |
3672 | { | |
3673 | m = MATCH_ERROR; | |
3674 | goto cleanup; | |
3675 | } | |
3676 | } | |
3677 | else | |
3678 | { | |
3679 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3680 | "specification part of a module", attr, &seen_at[d]); | |
3681 | m = MATCH_ERROR; | |
3682 | goto cleanup; | |
3683 | } | |
4213f93b PT |
3684 | } |
3685 | ||
6de9cd9a DN |
3686 | switch (d) |
3687 | { | |
3688 | case DECL_ALLOCATABLE: | |
3689 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3690 | break; | |
3691 | ||
1eee5628 TB |
3692 | case DECL_ASYNCHRONOUS: |
3693 | if (gfc_notify_std (GFC_STD_F2003, | |
9717f7a1 | 3694 | "ASYNCHRONOUS attribute at %C") |
1eee5628 TB |
3695 | == FAILURE) |
3696 | t = FAILURE; | |
3697 | else | |
3698 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3699 | break; | |
3700 | ||
be59db2d TB |
3701 | case DECL_CODIMENSION: |
3702 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3703 | break; | |
3704 | ||
fe4e525c TB |
3705 | case DECL_CONTIGUOUS: |
3706 | if (gfc_notify_std (GFC_STD_F2008, | |
9717f7a1 | 3707 | "CONTIGUOUS attribute at %C") |
fe4e525c TB |
3708 | == FAILURE) |
3709 | t = FAILURE; | |
3710 | else | |
3711 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3712 | break; | |
3713 | ||
6de9cd9a | 3714 | case DECL_DIMENSION: |
231b2fcc | 3715 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3716 | break; |
3717 | ||
3718 | case DECL_EXTERNAL: | |
3719 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3720 | break; | |
3721 | ||
3722 | case DECL_IN: | |
3723 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3724 | break; | |
3725 | ||
3726 | case DECL_OUT: | |
3727 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3728 | break; | |
3729 | ||
3730 | case DECL_INOUT: | |
3731 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3732 | break; | |
3733 | ||
3734 | case DECL_INTRINSIC: | |
3735 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3736 | break; | |
3737 | ||
3738 | case DECL_OPTIONAL: | |
3739 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3740 | break; | |
3741 | ||
3742 | case DECL_PARAMETER: | |
231b2fcc | 3743 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3744 | break; |
3745 | ||
3746 | case DECL_POINTER: | |
3747 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3748 | break; | |
3749 | ||
ee7e677f TB |
3750 | case DECL_PROTECTED: |
3751 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3752 | { | |
3753 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3754 | "part of a module"); | |
3755 | t = FAILURE; | |
3756 | break; | |
3757 | } | |
3758 | ||
9717f7a1 | 3759 | if (gfc_notify_std (GFC_STD_F2003, "PROTECTED " |
636dff67 | 3760 | "attribute at %C") |
ee7e677f TB |
3761 | == FAILURE) |
3762 | t = FAILURE; | |
3763 | else | |
3764 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3765 | break; | |
3766 | ||
6de9cd9a | 3767 | case DECL_PRIVATE: |
231b2fcc TS |
3768 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3769 | &seen_at[d]); | |
6de9cd9a DN |
3770 | break; |
3771 | ||
3772 | case DECL_PUBLIC: | |
231b2fcc TS |
3773 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3774 | &seen_at[d]); | |
6de9cd9a DN |
3775 | break; |
3776 | ||
3777 | case DECL_SAVE: | |
80f95228 | 3778 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3779 | break; |
3780 | ||
3781 | case DECL_TARGET: | |
3782 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3783 | break; | |
3784 | ||
a8b3b0b6 CR |
3785 | case DECL_IS_BIND_C: |
3786 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3787 | break; | |
3788 | ||
06469efd | 3789 | case DECL_VALUE: |
9717f7a1 | 3790 | if (gfc_notify_std (GFC_STD_F2003, "VALUE attribute " |
636dff67 | 3791 | "at %C") |
06469efd PT |
3792 | == FAILURE) |
3793 | t = FAILURE; | |
3794 | else | |
3795 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3796 | break; | |
3797 | ||
775e6c3a TB |
3798 | case DECL_VOLATILE: |
3799 | if (gfc_notify_std (GFC_STD_F2003, | |
9717f7a1 | 3800 | "VOLATILE attribute at %C") |
775e6c3a TB |
3801 | == FAILURE) |
3802 | t = FAILURE; | |
3803 | else | |
3804 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3805 | break; | |
3806 | ||
6de9cd9a DN |
3807 | default: |
3808 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3809 | } | |
3810 | ||
3811 | if (t == FAILURE) | |
3812 | { | |
3813 | m = MATCH_ERROR; | |
3814 | goto cleanup; | |
3815 | } | |
3816 | } | |
3817 | ||
d1f6dfe6 TB |
3818 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
3819 | if (gfc_current_state () == COMP_MODULE && !current_attr.save | |
3820 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) | |
80f95228 JW |
3821 | current_attr.save = SAVE_IMPLICIT; |
3822 | ||
6de9cd9a DN |
3823 | colon_seen = 1; |
3824 | return MATCH_YES; | |
3825 | ||
3826 | cleanup: | |
63645982 | 3827 | gfc_current_locus = start; |
6de9cd9a DN |
3828 | gfc_free_array_spec (current_as); |
3829 | current_as = NULL; | |
3830 | return m; | |
3831 | } | |
3832 | ||
3833 | ||
a8b3b0b6 CR |
3834 | /* Set the binding label, dest_label, either with the binding label |
3835 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3836 | will be the symbol name in all lower case, as required by the draft | |
3837 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3838 | there is more than one argument (num_idents), it is an error. */ | |
3839 | ||
62603fae | 3840 | static gfc_try |
9975a30b JB |
3841 | set_binding_label (const char **dest_label, const char *sym_name, |
3842 | int num_idents) | |
a8b3b0b6 | 3843 | { |
ad4a2f64 | 3844 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 3845 | { |
ad4a2f64 TB |
3846 | gfc_error ("Multiple identifiers provided with " |
3847 | "single NAME= specifier at %C"); | |
3848 | return FAILURE; | |
3849 | } | |
a8b3b0b6 | 3850 | |
62603fae | 3851 | if (curr_binding_label) |
eea58adb | 3852 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 3853 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
3854 | else |
3855 | { | |
3856 | /* No binding label given, and the NAME= specifier did not exist, | |
3857 | which means there was no NAME="". */ | |
3858 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 3859 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 CR |
3860 | } |
3861 | ||
3862 | return SUCCESS; | |
3863 | } | |
3864 | ||
3865 | ||
3866 | /* Set the status of the given common block as being BIND(C) or not, | |
3867 | depending on the given parameter, is_bind_c. */ | |
3868 | ||
3869 | void | |
3870 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3871 | { | |
3872 | com_block->is_bind_c = is_bind_c; | |
3873 | return; | |
3874 | } | |
3875 | ||
3876 | ||
3877 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3878 | ||
17b1d2a0 | 3879 | gfc_try |
00820a2a | 3880 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 3881 | { |
bc21d315 | 3882 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 TB |
3883 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
3884 | ? SUCCESS : FAILURE; | |
00820a2a JW |
3885 | else if (ts->type == BT_CLASS) |
3886 | return FAILURE; | |
45a69325 | 3887 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
a8b3b0b6 | 3888 | return FAILURE; |
45a69325 | 3889 | |
a8b3b0b6 CR |
3890 | return SUCCESS; |
3891 | } | |
3892 | ||
3893 | ||
3894 | /* Verify that the variables of a given common block, which has been | |
3895 | defined with the attribute specifier bind(c), to be of a C | |
3896 | interoperable type. Errors will be reported here, if | |
3897 | encountered. */ | |
3898 | ||
17b1d2a0 | 3899 | gfc_try |
a8b3b0b6 CR |
3900 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3901 | { | |
3902 | gfc_symbol *curr_sym = NULL; | |
17b1d2a0 | 3903 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
3904 | |
3905 | curr_sym = com_block->head; | |
3906 | ||
3907 | /* Make sure we have at least one symbol. */ | |
3908 | if (curr_sym == NULL) | |
3909 | return retval; | |
3910 | ||
3911 | /* Here we know we have a symbol, so we'll execute this loop | |
3912 | at least once. */ | |
3913 | do | |
3914 | { | |
3915 | /* The second to last param, 1, says this is in a common block. */ | |
3916 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3917 | curr_sym = curr_sym->common_next; | |
3918 | } while (curr_sym != NULL); | |
3919 | ||
3920 | return retval; | |
3921 | } | |
3922 | ||
3923 | ||
3924 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3925 | an appropriate error message is reported. */ | |
3926 | ||
17b1d2a0 | 3927 | gfc_try |
a8b3b0b6 CR |
3928 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3929 | int is_in_common, gfc_common_head *com_block) | |
3930 | { | |
8327f9c2 | 3931 | bool bind_c_function = false; |
17b1d2a0 | 3932 | gfc_try retval = SUCCESS; |
d8fa96e0 | 3933 | |
8327f9c2 TB |
3934 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3935 | bind_c_function = true; | |
3936 | ||
d8fa96e0 CR |
3937 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3938 | { | |
3939 | tmp_sym = tmp_sym->result; | |
3940 | /* Make sure it wasn't an implicitly typed result. */ | |
0e193637 | 3941 | if (tmp_sym->attr.implicit_type && gfc_option.warn_c_binding_type) |
d8fa96e0 CR |
3942 | { |
3943 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3944 | "%L may not be C interoperable", tmp_sym->name, | |
3945 | &tmp_sym->declared_at); | |
3946 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3947 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3948 | tmp_sym->ts.is_c_interop = 1; | |
3949 | tmp_sym->attr.is_c_interop = 1; | |
3950 | } | |
3951 | } | |
8327f9c2 | 3952 | |
a8b3b0b6 CR |
3953 | /* Here, we know we have the bind(c) attribute, so if we have |
3954 | enough type info, then verify that it's a C interop kind. | |
3955 | The info could be in the symbol already, or possibly still in | |
3956 | the given ts (current_ts), so look in both. */ | |
3957 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
3958 | { | |
00820a2a | 3959 | if (gfc_verify_c_interop (&(tmp_sym->ts)) != SUCCESS) |
a8b3b0b6 CR |
3960 | { |
3961 | /* See if we're dealing with a sym in a common block or not. */ | |
0e193637 | 3962 | if (is_in_common == 1 && gfc_option.warn_c_binding_type) |
a8b3b0b6 CR |
3963 | { |
3964 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3965 | "may not be a C interoperable " | |
3966 | "kind though common block '%s' is BIND(C)", | |
3967 | tmp_sym->name, com_block->name, | |
3968 | &(tmp_sym->declared_at), com_block->name); | |
3969 | } | |
3970 | else | |
3971 | { | |
3972 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3973 | gfc_error ("Type declaration '%s' at %L is not C " | |
3974 | "interoperable but it is BIND(C)", | |
3975 | tmp_sym->name, &(tmp_sym->declared_at)); | |
0e193637 | 3976 | else if (gfc_option.warn_c_binding_type) |
a8b3b0b6 CR |
3977 | gfc_warning ("Variable '%s' at %L " |
3978 | "may not be a C interoperable " | |
3979 | "kind but it is bind(c)", | |
3980 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3981 | } | |
3982 | } | |
3983 | ||
3984 | /* Variables declared w/in a common block can't be bind(c) | |
3985 | since there's no way for C to see these variables, so there's | |
3986 | semantically no reason for the attribute. */ | |
3987 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
3988 | { | |
3989 | gfc_error ("Variable '%s' in common block '%s' at " | |
3990 | "%L cannot be declared with BIND(C) " | |
3991 | "since it is not a global", | |
3992 | tmp_sym->name, com_block->name, | |
3993 | &(tmp_sym->declared_at)); | |
3994 | retval = FAILURE; | |
3995 | } | |
3996 | ||
3997 | /* Scalar variables that are bind(c) can not have the pointer | |
3998 | or allocatable attributes. */ | |
3999 | if (tmp_sym->attr.is_bind_c == 1) | |
4000 | { | |
4001 | if (tmp_sym->attr.pointer == 1) | |
4002 | { | |
4003 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4004 | "POINTER and BIND(C) attributes", | |
4005 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4006 | retval = FAILURE; | |
4007 | } | |
4008 | ||
4009 | if (tmp_sym->attr.allocatable == 1) | |
4010 | { | |
4011 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4012 | "ALLOCATABLE and BIND(C) attributes", | |
4013 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4014 | retval = FAILURE; | |
4015 | } | |
4016 | ||
8327f9c2 TB |
4017 | } |
4018 | ||
4019 | /* If it is a BIND(C) function, make sure the return value is a | |
4020 | scalar value. The previous tests in this function made sure | |
4021 | the type is interoperable. */ | |
4022 | if (bind_c_function && tmp_sym->as != NULL) | |
4023 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
4024 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
4025 | ||
4026 | /* BIND(C) functions can not return a character string. */ | |
4027 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4028 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4029 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4030 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
8327f9c2 | 4031 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
a8b3b0b6 CR |
4032 | "be a character string", tmp_sym->name, |
4033 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4034 | } |
4035 | ||
4036 | /* See if the symbol has been marked as private. If it has, make sure | |
4037 | there is no binding label and warn the user if there is one. */ | |
4038 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4039 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4040 | /* Use gfc_warning_now because we won't say that the symbol fails |
4041 | just because of this. */ | |
4042 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
4043 | "given the binding label '%s'", tmp_sym->name, | |
4044 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
4045 | ||
4046 | return retval; | |
4047 | } | |
4048 | ||
4049 | ||
4050 | /* Set the appropriate fields for a symbol that's been declared as | |
4051 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4052 | the type is C interoperable. Errors are reported by the functions | |
4053 | used to set/test these fields. */ | |
4054 | ||
17b1d2a0 | 4055 | gfc_try |
a8b3b0b6 CR |
4056 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4057 | { | |
17b1d2a0 | 4058 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
4059 | |
4060 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
4061 | ||
4062 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4063 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4064 | ||
62603fae | 4065 | if (set_binding_label (&tmp_sym->binding_label, tmp_sym->name, |
a8b3b0b6 CR |
4066 | num_idents) != SUCCESS) |
4067 | return FAILURE; | |
4068 | ||
4069 | return retval; | |
4070 | } | |
4071 | ||
4072 | ||
4073 | /* Set the fields marking the given common block as BIND(C), including | |
4074 | a binding label, and report any errors encountered. */ | |
4075 | ||
17b1d2a0 | 4076 | gfc_try |
a8b3b0b6 CR |
4077 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4078 | { | |
17b1d2a0 | 4079 | gfc_try retval = SUCCESS; |
a8b3b0b6 CR |
4080 | |
4081 | /* destLabel, common name, typespec (which may have binding label). */ | |
62603fae JB |
4082 | if (set_binding_label (&com_block->binding_label, com_block->name, |
4083 | num_idents) | |
a8b3b0b6 CR |
4084 | != SUCCESS) |
4085 | return FAILURE; | |
4086 | ||
4087 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4088 | set_com_block_bind_c (com_block, 1); | |
4089 | ||
4090 | return retval; | |
4091 | } | |
4092 | ||
4093 | ||
4094 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4095 | attribute applies to. */ | |
4096 | ||
17b1d2a0 | 4097 | gfc_try |
a8b3b0b6 CR |
4098 | get_bind_c_idents (void) |
4099 | { | |
4100 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4101 | int num_idents = 0; | |
4102 | gfc_symbol *tmp_sym = NULL; | |
4103 | match found_id; | |
4104 | gfc_common_head *com_block = NULL; | |
4105 | ||
4106 | if (gfc_match_name (name) == MATCH_YES) | |
4107 | { | |
4108 | found_id = MATCH_YES; | |
4109 | gfc_get_ha_symbol (name, &tmp_sym); | |
4110 | } | |
4111 | else if (match_common_name (name) == MATCH_YES) | |
4112 | { | |
4113 | found_id = MATCH_YES; | |
4114 | com_block = gfc_get_common (name, 0); | |
4115 | } | |
4116 | else | |
4117 | { | |
4118 | gfc_error ("Need either entity or common block name for " | |
4119 | "attribute specification statement at %C"); | |
4120 | return FAILURE; | |
4121 | } | |
4122 | ||
4123 | /* Save the current identifier and look for more. */ | |
4124 | do | |
4125 | { | |
4126 | /* Increment the number of identifiers found for this spec stmt. */ | |
4127 | num_idents++; | |
4128 | ||
4129 | /* Make sure we have a sym or com block, and verify that it can | |
4130 | be bind(c). Set the appropriate field(s) and look for more | |
4131 | identifiers. */ | |
4132 | if (tmp_sym != NULL || com_block != NULL) | |
4133 | { | |
4134 | if (tmp_sym != NULL) | |
4135 | { | |
4136 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
4137 | != SUCCESS) | |
4138 | return FAILURE; | |
4139 | } | |
4140 | else | |
4141 | { | |
4142 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
4143 | != SUCCESS) | |
4144 | return FAILURE; | |
4145 | } | |
4146 | ||
4147 | /* Look to see if we have another identifier. */ | |
4148 | tmp_sym = NULL; | |
4149 | if (gfc_match_eos () == MATCH_YES) | |
4150 | found_id = MATCH_NO; | |
4151 | else if (gfc_match_char (',') != MATCH_YES) | |
4152 | found_id = MATCH_NO; | |
4153 | else if (gfc_match_name (name) == MATCH_YES) | |
4154 | { | |
4155 | found_id = MATCH_YES; | |
4156 | gfc_get_ha_symbol (name, &tmp_sym); | |
4157 | } | |
4158 | else if (match_common_name (name) == MATCH_YES) | |
4159 | { | |
4160 | found_id = MATCH_YES; | |
4161 | com_block = gfc_get_common (name, 0); | |
4162 | } | |
4163 | else | |
4164 | { | |
4165 | gfc_error ("Missing entity or common block name for " | |
4166 | "attribute specification statement at %C"); | |
4167 | return FAILURE; | |
4168 | } | |
4169 | } | |
4170 | else | |
4171 | { | |
4172 | gfc_internal_error ("Missing symbol"); | |
4173 | } | |
4174 | } while (found_id == MATCH_YES); | |
4175 | ||
4176 | /* if we get here we were successful */ | |
4177 | return SUCCESS; | |
4178 | } | |
4179 | ||
4180 | ||
4181 | /* Try and match a BIND(C) attribute specification statement. */ | |
4182 | ||
4183 | match | |
4184 | gfc_match_bind_c_stmt (void) | |
4185 | { | |
4186 | match found_match = MATCH_NO; | |
4187 | gfc_typespec *ts; | |
4188 | ||
4189 | ts = ¤t_ts; | |
4190 | ||
4191 | /* This may not be necessary. */ | |
4192 | gfc_clear_ts (ts); | |
4193 | /* Clear the temporary binding label holder. */ | |
62603fae | 4194 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4195 | |
4196 | /* Look for the bind(c). */ | |
1eabf70a | 4197 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4198 | |
4199 | if (found_match == MATCH_YES) | |
4200 | { | |
4201 | /* Look for the :: now, but it is not required. */ | |
4202 | gfc_match (" :: "); | |
4203 | ||
4204 | /* Get the identifier(s) that needs to be updated. This may need to | |
4205 | change to hand the flag(s) for the attr specified so all identifiers | |
4206 | found can have all appropriate parts updated (assuming that the same | |
4207 | spec stmt can have multiple attrs, such as both bind(c) and | |
4208 | allocatable...). */ | |
4209 | if (get_bind_c_idents () != SUCCESS) | |
4210 | /* Error message should have printed already. */ | |
4211 | return MATCH_ERROR; | |
4212 | } | |
4213 | ||
4214 | return found_match; | |
4215 | } | |
4216 | ||
4217 | ||
6de9cd9a DN |
4218 | /* Match a data declaration statement. */ |
4219 | ||
4220 | match | |
4221 | gfc_match_data_decl (void) | |
4222 | { | |
4223 | gfc_symbol *sym; | |
4224 | match m; | |
949d5b72 | 4225 | int elem; |
6de9cd9a | 4226 | |
a8b3b0b6 CR |
4227 | num_idents_on_line = 0; |
4228 | ||
e74f1cc8 | 4229 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4230 | if (m != MATCH_YES) |
4231 | return m; | |
4232 | ||
2e23972e JW |
4233 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4234 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4235 | { |
bc21d315 | 4236 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4237 | |
4238 | if (sym == NULL) | |
4239 | { | |
4240 | m = MATCH_ERROR; | |
4241 | goto cleanup; | |
4242 | } | |
4243 | ||
bc21d315 | 4244 | current_ts.u.derived = sym; |
6de9cd9a DN |
4245 | } |
4246 | ||
4247 | m = match_attr_spec (); | |
4248 | if (m == MATCH_ERROR) | |
4249 | { | |
4250 | m = MATCH_NO; | |
4251 | goto cleanup; | |
4252 | } | |
4253 | ||
2e23972e JW |
4254 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4255 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4256 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4257 | { |
4258 | ||
4259 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4260 | goto ok; | |
4261 | ||
bc21d315 JW |
4262 | gfc_find_symbol (current_ts.u.derived->name, |
4263 | current_ts.u.derived->ns->parent, 1, &sym); | |
6de9cd9a | 4264 | |
976e21f6 | 4265 | /* Any symbol that we find had better be a type definition |
636dff67 | 4266 | which has its components defined. */ |
976e21f6 | 4267 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4268 | && (current_ts.u.derived->components != NULL |
4269 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4270 | goto ok; |
4271 | ||
976e21f6 PT |
4272 | /* Now we have an error, which we signal, and then fix up |
4273 | because the knock-on is plain and simple confusing. */ | |
4274 | gfc_error_now ("Derived type at %C has not been previously defined " | |
636dff67 | 4275 | "and so cannot appear in a derived type definition"); |
976e21f6 PT |
4276 | current_attr.pointer = 1; |
4277 | goto ok; | |
6de9cd9a DN |
4278 | } |
4279 | ||
4280 | ok: | |
4281 | /* If we have an old-style character declaration, and no new-style | |
4282 | attribute specifications, then there a comma is optional between | |
4283 | the type specification and the variable list. */ | |
4284 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4285 | gfc_match_char (','); | |
4286 | ||
949d5b72 PT |
4287 | /* Give the types/attributes to symbols that follow. Give the element |
4288 | a number so that repeat character length expressions can be copied. */ | |
4289 | elem = 1; | |
6de9cd9a DN |
4290 | for (;;) |
4291 | { | |
a8b3b0b6 | 4292 | num_idents_on_line++; |
949d5b72 | 4293 | m = variable_decl (elem++); |
6de9cd9a DN |
4294 | if (m == MATCH_ERROR) |
4295 | goto cleanup; | |
4296 | if (m == MATCH_NO) | |
4297 | break; | |
4298 | ||
4299 | if (gfc_match_eos () == MATCH_YES) | |
4300 | goto cleanup; | |
4301 | if (gfc_match_char (',') != MATCH_YES) | |
4302 | break; | |
4303 | } | |
4304 | ||
8f81c3c6 PT |
4305 | if (gfc_error_flag_test () == 0) |
4306 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
4307 | m = MATCH_ERROR; |
4308 | ||
a9f6f1f2 JD |
4309 | gfc_free_data_all (gfc_current_ns); |
4310 | ||
6de9cd9a DN |
4311 | cleanup: |
4312 | gfc_free_array_spec (current_as); | |
4313 | current_as = NULL; | |
4314 | return m; | |
4315 | } | |
4316 | ||
4317 | ||
4318 | /* Match a prefix associated with a function or subroutine | |
4319 | declaration. If the typespec pointer is nonnull, then a typespec | |
4320 | can be matched. Note that if nothing matches, MATCH_YES is | |
4321 | returned (the null string was matched). */ | |
4322 | ||
1c8bcdf7 PT |
4323 | match |
4324 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4325 | { |
7389bce6 | 4326 | bool seen_type; |
e6c14898 DK |
4327 | bool seen_impure; |
4328 | bool found_prefix; | |
6de9cd9a DN |
4329 | |
4330 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4331 | seen_type = false; |
4332 | seen_impure = false; | |
6de9cd9a | 4333 | |
3df684e2 DK |
4334 | gcc_assert (!gfc_matching_prefix); |
4335 | gfc_matching_prefix = true; | |
f37e928c | 4336 | |
e6c14898 | 4337 | do |
6de9cd9a | 4338 | { |
e6c14898 | 4339 | found_prefix = false; |
6de9cd9a | 4340 | |
e6c14898 DK |
4341 | if (!seen_type && ts != NULL |
4342 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4343 | && gfc_match_space () == MATCH_YES) | |
4344 | { | |
6de9cd9a | 4345 | |
e6c14898 DK |
4346 | seen_type = true; |
4347 | found_prefix = true; | |
4348 | } | |
4349 | ||
4350 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4351 | { | |
4352 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
4353 | goto error; | |
4354 | ||
4355 | found_prefix = true; | |
4356 | } | |
4357 | ||
4358 | if (gfc_match ("pure% ") == MATCH_YES) | |
4359 | { | |
4360 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
4361 | goto error; | |
4362 | ||
4363 | found_prefix = true; | |
4364 | } | |
6de9cd9a | 4365 | |
e6c14898 DK |
4366 | if (gfc_match ("recursive% ") == MATCH_YES) |
4367 | { | |
4368 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
4369 | goto error; | |
4370 | ||
4371 | found_prefix = true; | |
4372 | } | |
4373 | ||
4374 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4375 | attribute but rather only prevents ELEMENTAL routines from being | |
4376 | automatically PURE. */ | |
4377 | if (gfc_match ("impure% ") == MATCH_YES) | |
4378 | { | |
4379 | if (gfc_notify_std (GFC_STD_F2008, | |
9717f7a1 | 4380 | "IMPURE procedure at %C") |
e6c14898 DK |
4381 | == FAILURE) |
4382 | goto error; | |
4383 | ||
4384 | seen_impure = true; | |
4385 | found_prefix = true; | |
4386 | } | |
6de9cd9a | 4387 | } |
e6c14898 | 4388 | while (found_prefix); |
6de9cd9a | 4389 | |
e6c14898 DK |
4390 | /* IMPURE and PURE must not both appear, of course. */ |
4391 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4392 | { |
e6c14898 DK |
4393 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4394 | goto error; | |
6de9cd9a DN |
4395 | } |
4396 | ||
e6c14898 DK |
4397 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4398 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4399 | { |
e6c14898 | 4400 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) |
f37e928c | 4401 | goto error; |
6de9cd9a DN |
4402 | } |
4403 | ||
4404 | /* At this point, the next item is not a prefix. */ | |
3df684e2 DK |
4405 | gcc_assert (gfc_matching_prefix); |
4406 | gfc_matching_prefix = false; | |
6de9cd9a | 4407 | return MATCH_YES; |
f37e928c DK |
4408 | |
4409 | error: | |
3df684e2 DK |
4410 | gcc_assert (gfc_matching_prefix); |
4411 | gfc_matching_prefix = false; | |
f37e928c | 4412 | return MATCH_ERROR; |
6de9cd9a DN |
4413 | } |
4414 | ||
4415 | ||
1c8bcdf7 | 4416 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4417 | |
17b1d2a0 | 4418 | static gfc_try |
636dff67 | 4419 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4420 | { |
6de9cd9a DN |
4421 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
4422 | return FAILURE; | |
4423 | ||
4424 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
4425 | return FAILURE; | |
4426 | ||
4427 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
4428 | return FAILURE; | |
4429 | ||
4430 | return SUCCESS; | |
4431 | } | |
4432 | ||
4433 | ||
4434 | /* Match a formal argument list. */ | |
4435 | ||
4436 | match | |
636dff67 | 4437 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4438 | { |
4439 | gfc_formal_arglist *head, *tail, *p, *q; | |
4440 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4441 | gfc_symbol *sym; | |
4442 | match m; | |
4443 | ||
4444 | head = tail = NULL; | |
4445 | ||
4446 | if (gfc_match_char ('(') != MATCH_YES) | |
4447 | { | |
4448 | if (null_flag) | |
4449 | goto ok; | |
4450 | return MATCH_NO; | |
4451 | } | |
4452 | ||
4453 | if (gfc_match_char (')') == MATCH_YES) | |
4454 | goto ok; | |
4455 | ||
4456 | for (;;) | |
4457 | { | |
4458 | if (gfc_match_char ('*') == MATCH_YES) | |
4459 | sym = NULL; | |
4460 | else | |
4461 | { | |
4462 | m = gfc_match_name (name); | |
4463 | if (m != MATCH_YES) | |
4464 | goto cleanup; | |
4465 | ||
4466 | if (gfc_get_symbol (name, NULL, &sym)) | |
4467 | goto cleanup; | |
4468 | } | |
4469 | ||
4470 | p = gfc_get_formal_arglist (); | |
4471 | ||
4472 | if (head == NULL) | |
4473 | head = tail = p; | |
4474 | else | |
4475 | { | |
4476 | tail->next = p; | |
4477 | tail = p; | |
4478 | } | |
4479 | ||
4480 | tail->sym = sym; | |
4481 | ||
4482 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4483 | dummy procedure. We don't apply these attributes to formal |
4484 | arguments of statement functions. */ | |
6de9cd9a | 4485 | if (sym != NULL && !st_flag |
231b2fcc | 4486 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
6de9cd9a DN |
4487 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
4488 | { | |
4489 | m = MATCH_ERROR; | |
4490 | goto cleanup; | |
4491 | } | |
4492 | ||
4493 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4494 | so check for it explicitly. After the statement is accepted, |
4495 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4496 | if (gfc_new_block != NULL && sym != NULL |
4497 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4498 | { | |
4499 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4500 | sym->name); | |
4501 | m = MATCH_ERROR; | |
4502 | goto cleanup; | |
4503 | } | |
4504 | ||
4505 | if (gfc_match_char (')') == MATCH_YES) | |
4506 | goto ok; | |
4507 | ||
4508 | m = gfc_match_char (','); | |
4509 | if (m != MATCH_YES) | |
4510 | { | |
4511 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4512 | goto cleanup; | |
4513 | } | |
4514 | } | |
4515 | ||
4516 | ok: | |
4517 | /* Check for duplicate symbols in the formal argument list. */ | |
4518 | if (head != NULL) | |
4519 | { | |
4520 | for (p = head; p->next; p = p->next) | |
4521 | { | |
4522 | if (p->sym == NULL) | |
4523 | continue; | |
4524 | ||
4525 | for (q = p->next; q; q = q->next) | |
4526 | if (p->sym == q->sym) | |
4527 | { | |
636dff67 SK |
4528 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4529 | "at %C", p->sym->name); | |
6de9cd9a DN |
4530 | |
4531 | m = MATCH_ERROR; | |
4532 | goto cleanup; | |
4533 | } | |
4534 | } | |
4535 | } | |
4536 | ||
66e4ab31 SK |
4537 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
4538 | == FAILURE) | |
6de9cd9a DN |
4539 | { |
4540 | m = MATCH_ERROR; | |
4541 | goto cleanup; | |
4542 | } | |
4543 | ||
4544 | return MATCH_YES; | |
4545 | ||
4546 | cleanup: | |
4547 | gfc_free_formal_arglist (head); | |
4548 | return m; | |
4549 | } | |
4550 | ||
4551 | ||
4552 | /* Match a RESULT specification following a function declaration or | |
4553 | ENTRY statement. Also matches the end-of-statement. */ | |
4554 | ||
4555 | static match | |
66e4ab31 | 4556 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4557 | { |
4558 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4559 | gfc_symbol *r; | |
4560 | match m; | |
4561 | ||
4562 | if (gfc_match (" result (") != MATCH_YES) | |
4563 | return MATCH_NO; | |
4564 | ||
4565 | m = gfc_match_name (name); | |
4566 | if (m != MATCH_YES) | |
4567 | return m; | |
4568 | ||
a8b3b0b6 CR |
4569 | /* Get the right paren, and that's it because there could be the |
4570 | bind(c) attribute after the result clause. */ | |
4571 | if (gfc_match_char(')') != MATCH_YES) | |
6de9cd9a | 4572 | { |
a8b3b0b6 | 4573 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4574 | return MATCH_ERROR; |
4575 | } | |
4576 | ||
4577 | if (strcmp (function->name, name) == 0) | |
4578 | { | |
636dff67 | 4579 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4580 | return MATCH_ERROR; |
4581 | } | |
4582 | ||
4583 | if (gfc_get_symbol (name, NULL, &r)) | |
4584 | return MATCH_ERROR; | |
4585 | ||
726d8566 | 4586 | if (gfc_add_result (&r->attr, r->name, NULL) == FAILURE) |
6de9cd9a DN |
4587 | return MATCH_ERROR; |
4588 | ||
4589 | *result = r; | |
4590 | ||
4591 | return MATCH_YES; | |
4592 | } | |
4593 | ||
4594 | ||
a8b3b0b6 CR |
4595 | /* Match a function suffix, which could be a combination of a result |
4596 | clause and BIND(C), either one, or neither. The draft does not | |
4597 | require them to come in a specific order. */ | |
4598 | ||
4599 | match | |
4600 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4601 | { | |
4602 | match is_bind_c; /* Found bind(c). */ | |
4603 | match is_result; /* Found result clause. */ | |
4604 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4605 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4606 | bool allow_binding_name; |
a8b3b0b6 CR |
4607 | |
4608 | /* Initialize to having found nothing. */ | |
4609 | found_match = MATCH_NO; | |
4610 | is_bind_c = MATCH_NO; | |
4611 | is_result = MATCH_NO; | |
4612 | ||
4613 | /* Get the next char to narrow between result and bind(c). */ | |
4614 | gfc_gobble_whitespace (); | |
8fc541d3 | 4615 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4616 | |
1eabf70a TB |
4617 | /* C binding names are not allowed for internal procedures. */ |
4618 | if (gfc_current_state () == COMP_CONTAINS | |
4619 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4620 | allow_binding_name = false; | |
4621 | else | |
4622 | allow_binding_name = true; | |
4623 | ||
a8b3b0b6 CR |
4624 | switch (peek_char) |
4625 | { | |
4626 | case 'r': | |
4627 | /* Look for result clause. */ | |
4628 | is_result = match_result (sym, result); | |
4629 | if (is_result == MATCH_YES) | |
4630 | { | |
4631 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4632 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4633 | /* We've found the result clause and possibly bind(c). */ |
4634 | found_match = MATCH_YES; | |
4635 | } | |
4636 | else | |
4637 | /* This should only be MATCH_ERROR. */ | |
4638 | found_match = is_result; | |
4639 | break; | |
4640 | case 'b': | |
4641 | /* Look for bind(c) first. */ | |
1eabf70a | 4642 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4643 | if (is_bind_c == MATCH_YES) |
4644 | { | |
4645 | /* Now see if a result clause followed it. */ | |
4646 | is_result = match_result (sym, result); | |
4647 | found_match = MATCH_YES; | |
4648 | } | |
4649 | else | |
4650 | { | |
4651 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4652 | found_match = MATCH_ERROR; | |
4653 | } | |
4654 | break; | |
4655 | default: | |
4656 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4657 | found_match = MATCH_ERROR; | |
4658 | break; | |
4659 | } | |
4660 | ||
a8b3b0b6 | 4661 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4662 | { |
1eabf70a | 4663 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4664 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4665 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
9717f7a1 | 4666 | && gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
fdc54e88 FXC |
4667 | "at %L may not be specified for an internal " |
4668 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
4669 | == FAILURE) |
4670 | return MATCH_ERROR; | |
4671 | ||
01f4fff1 TB |
4672 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) |
4673 | == FAILURE) | |
4674 | return MATCH_ERROR; | |
4675 | } | |
a8b3b0b6 CR |
4676 | |
4677 | return found_match; | |
4678 | } | |
4679 | ||
4680 | ||
3070bab4 JW |
4681 | /* Procedure pointer return value without RESULT statement: |
4682 | Add "hidden" result variable named "ppr@". */ | |
4683 | ||
4684 | static gfc_try | |
4685 | add_hidden_procptr_result (gfc_symbol *sym) | |
4686 | { | |
4687 | bool case1,case2; | |
4688 | ||
4689 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
4690 | return FAILURE; | |
4691 | ||
4692 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4693 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4694 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4695 | && sym->attr.external; | |
4696 | /* Second usage case: INTERFACE statements. */ | |
4697 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4698 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4699 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4700 | ||
4701 | if (case1 || case2) | |
4702 | { | |
4703 | gfc_symtree *stree; | |
4704 | if (case1) | |
08a6b8e0 | 4705 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4706 | else if (case2) |
c73b6478 JW |
4707 | { |
4708 | gfc_symtree *st2; | |
08a6b8e0 | 4709 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4710 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4711 | st2->n.sym = stree->n.sym; | |
4712 | } | |
3070bab4 JW |
4713 | sym->result = stree->n.sym; |
4714 | ||
4715 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4716 | sym->result->attr.pointer = sym->attr.pointer; | |
4717 | sym->result->attr.external = sym->attr.external; | |
4718 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4719 | sym->result->ts = sym->ts; |
3070bab4 JW |
4720 | sym->attr.proc_pointer = 0; |
4721 | sym->attr.pointer = 0; | |
4722 | sym->attr.external = 0; | |
4723 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4724 | { | |
4725 | sym->result->attr.pointer = 0; | |
4726 | sym->result->attr.proc_pointer = 1; | |
4727 | } | |
4728 | ||
4729 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4730 | } | |
4731 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4732 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4733 | && sym->result && sym->result != sym && sym->result->attr.external | |
4734 | && sym == gfc_current_ns->proc_name | |
4735 | && sym == sym->result->ns->proc_name | |
4736 | && strcmp ("ppr@", sym->result->name) == 0) | |
4737 | { | |
4738 | sym->result->attr.proc_pointer = 1; | |
4739 | sym->attr.pointer = 0; | |
4740 | return SUCCESS; | |
4741 | } | |
4742 | else | |
4743 | return FAILURE; | |
4744 | } | |
4745 | ||
4746 | ||
713485cc JW |
4747 | /* Match the interface for a PROCEDURE declaration, |
4748 | including brackets (R1212). */ | |
69773742 JW |
4749 | |
4750 | static match | |
713485cc | 4751 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
4752 | { |
4753 | match m; | |
3276e0b3 | 4754 | gfc_symtree *st; |
69773742 | 4755 | locus old_loc, entry_loc; |
3276e0b3 PT |
4756 | gfc_namespace *old_ns = gfc_current_ns; |
4757 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 4758 | |
3276e0b3 | 4759 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
4760 | gfc_clear_ts (¤t_ts); |
4761 | ||
4762 | if (gfc_match (" (") != MATCH_YES) | |
4763 | { | |
4764 | gfc_current_locus = entry_loc; | |
4765 | return MATCH_NO; | |
4766 | } | |
4767 | ||
4768 | /* Get the type spec. for the procedure interface. */ | |
4769 | old_loc = gfc_current_locus; | |
e74f1cc8 | 4770 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 4771 | gfc_gobble_whitespace (); |
8fc541d3 | 4772 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
4773 | goto got_ts; |
4774 | ||
4775 | if (m == MATCH_ERROR) | |
4776 | return m; | |
4777 | ||
3276e0b3 | 4778 | /* Procedure interface is itself a procedure. */ |
69773742 | 4779 | gfc_current_locus = old_loc; |
3276e0b3 | 4780 | m = gfc_match_name (name); |
69773742 | 4781 | |
3276e0b3 PT |
4782 | /* First look to see if it is already accessible in the current |
4783 | namespace because it is use associated or contained. */ | |
4784 | st = NULL; | |
4785 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4786 | return MATCH_ERROR; | |
4787 | ||
4788 | /* If it is still not found, then try the parent namespace, if it | |
4789 | exists and create the symbol there if it is still not found. */ | |
4790 | if (gfc_current_ns->parent) | |
4791 | gfc_current_ns = gfc_current_ns->parent; | |
4792 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4793 | return MATCH_ERROR; | |
4794 | ||
4795 | gfc_current_ns = old_ns; | |
4796 | *proc_if = st->n.sym; | |
69773742 JW |
4797 | |
4798 | /* Various interface checks. */ | |
713485cc | 4799 | if (*proc_if) |
69773742 | 4800 | { |
713485cc | 4801 | (*proc_if)->refs++; |
bb343a6c TB |
4802 | /* Resolve interface if possible. That way, attr.procedure is only set |
4803 | if it is declared by a later procedure-declaration-stmt, which is | |
4804 | invalid per C1212. */ | |
713485cc JW |
4805 | while ((*proc_if)->ts.interface) |
4806 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 4807 | |
713485cc | 4808 | if ((*proc_if)->generic) |
69773742 | 4809 | { |
713485cc JW |
4810 | gfc_error ("Interface '%s' at %C may not be generic", |
4811 | (*proc_if)->name); | |
69773742 JW |
4812 | return MATCH_ERROR; |
4813 | } | |
713485cc | 4814 | if ((*proc_if)->attr.proc == PROC_ST_FUNCTION) |
69773742 JW |
4815 | { |
4816 | gfc_error ("Interface '%s' at %C may not be a statement function", | |
713485cc | 4817 | (*proc_if)->name); |
69773742 JW |
4818 | return MATCH_ERROR; |
4819 | } | |
4820 | /* Handle intrinsic procedures. */ | |
713485cc JW |
4821 | if (!((*proc_if)->attr.external || (*proc_if)->attr.use_assoc |
4822 | || (*proc_if)->attr.if_source == IFSRC_IFBODY) | |
4823 | && (gfc_is_intrinsic ((*proc_if), 0, gfc_current_locus) | |
4824 | || gfc_is_intrinsic ((*proc_if), 1, gfc_current_locus))) | |
4825 | (*proc_if)->attr.intrinsic = 1; | |
4826 | if ((*proc_if)->attr.intrinsic | |
4827 | && !gfc_intrinsic_actual_ok ((*proc_if)->name, 0)) | |
69773742 JW |
4828 | { |
4829 | gfc_error ("Intrinsic procedure '%s' not allowed " | |
713485cc | 4830 | "in PROCEDURE statement at %C", (*proc_if)->name); |
69773742 JW |
4831 | return MATCH_ERROR; |
4832 | } | |
69773742 JW |
4833 | } |
4834 | ||
4835 | got_ts: | |
69773742 JW |
4836 | if (gfc_match (" )") != MATCH_YES) |
4837 | { | |
4838 | gfc_current_locus = entry_loc; | |
4839 | return MATCH_NO; | |
4840 | } | |
4841 | ||
713485cc JW |
4842 | return MATCH_YES; |
4843 | } | |
4844 | ||
4845 | ||
4846 | /* Match a PROCEDURE declaration (R1211). */ | |
4847 | ||
4848 | static match | |
4849 | match_procedure_decl (void) | |
4850 | { | |
4851 | match m; | |
4852 | gfc_symbol *sym, *proc_if = NULL; | |
4853 | int num; | |
4854 | gfc_expr *initializer = NULL; | |
4855 | ||
4856 | /* Parse interface (with brackets). */ | |
4857 | m = match_procedure_interface (&proc_if); | |
4858 | if (m != MATCH_YES) | |
4859 | return m; | |
4860 | ||
4861 | /* Parse attributes (with colons). */ | |
69773742 JW |
4862 | m = match_attr_spec(); |
4863 | if (m == MATCH_ERROR) | |
4864 | return MATCH_ERROR; | |
4865 | ||
0859be17 TB |
4866 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
4867 | { | |
4868 | current_attr.is_bind_c = 1; | |
4869 | has_name_equals = 0; | |
4870 | curr_binding_label = NULL; | |
4871 | } | |
4872 | ||
69773742 JW |
4873 | /* Get procedure symbols. */ |
4874 | for(num=1;;num++) | |
4875 | { | |
69773742 JW |
4876 | m = gfc_match_symbol (&sym, 0); |
4877 | if (m == MATCH_NO) | |
4878 | goto syntax; | |
4879 | else if (m == MATCH_ERROR) | |
4880 | return m; | |
4881 | ||
4882 | /* Add current_attr to the symbol attributes. */ | |
4883 | if (gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4884 | return MATCH_ERROR; | |
4885 | ||
4886 | if (sym->attr.is_bind_c) | |
4887 | { | |
4888 | /* Check for C1218. */ | |
4889 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4890 | { | |
4891 | gfc_error ("BIND(C) attribute at %C requires " | |
4892 | "an interface with BIND(C)"); | |
4893 | return MATCH_ERROR; | |
4894 | } | |
4895 | /* Check for C1217. */ | |
4896 | if (has_name_equals && sym->attr.pointer) | |
4897 | { | |
4898 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4899 | "POINTER attribute at %C"); | |
4900 | return MATCH_ERROR; | |
4901 | } | |
4902 | if (has_name_equals && sym->attr.dummy) | |
4903 | { | |
4904 | gfc_error ("Dummy procedure at %C may not have " | |
4905 | "BIND(C) attribute with NAME"); | |
4906 | return MATCH_ERROR; | |
4907 | } | |
4908 | /* Set binding label for BIND(C). */ | |
62603fae JB |
4909 | if (set_binding_label (&sym->binding_label, sym->name, num) |
4910 | != SUCCESS) | |
69773742 JW |
4911 | return MATCH_ERROR; |
4912 | } | |
4913 | ||
8fb74da4 | 4914 | if (gfc_add_external (&sym->attr, NULL) == FAILURE) |
69773742 | 4915 | return MATCH_ERROR; |
3070bab4 JW |
4916 | |
4917 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
4918 | sym = sym->result; | |
4919 | ||
69773742 JW |
4920 | if (gfc_add_proc (&sym->attr, sym->name, NULL) == FAILURE) |
4921 | return MATCH_ERROR; | |
4922 | ||
4923 | /* Set interface. */ | |
4924 | if (proc_if != NULL) | |
6cc309c9 | 4925 | { |
1d146030 JW |
4926 | if (sym->ts.type != BT_UNKNOWN) |
4927 | { | |
4928 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4929 | sym->name, &gfc_current_locus, | |
4930 | gfc_basic_typename (sym->ts.type)); | |
4931 | return MATCH_ERROR; | |
4932 | } | |
32d99e68 | 4933 | sym->ts.interface = proc_if; |
6cc309c9 | 4934 | sym->attr.untyped = 1; |
c73b6478 | 4935 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 4936 | } |
69773742 JW |
4937 | else if (current_ts.type != BT_UNKNOWN) |
4938 | { | |
1d146030 JW |
4939 | if (gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) |
4940 | return MATCH_ERROR; | |
32d99e68 JW |
4941 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4942 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 4943 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 4944 | sym->ts.interface->attr.function = 1; |
d91909c0 | 4945 | sym->attr.function = 1; |
c73b6478 | 4946 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
4947 | } |
4948 | ||
8fb74da4 JW |
4949 | if (gfc_match (" =>") == MATCH_YES) |
4950 | { | |
4951 | if (!current_attr.pointer) | |
4952 | { | |
4953 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4954 | m = MATCH_ERROR; | |
4955 | goto cleanup; | |
4956 | } | |
4957 | ||
80f95228 | 4958 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
4959 | if (m != MATCH_YES) |
4960 | goto cleanup; | |
4961 | ||
4962 | if (add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus) | |
4963 | != SUCCESS) | |
4964 | goto cleanup; | |
4965 | ||
4966 | } | |
4967 | ||
4968 | gfc_set_sym_referenced (sym); | |
4969 | ||
69773742 JW |
4970 | if (gfc_match_eos () == MATCH_YES) |
4971 | return MATCH_YES; | |
4972 | if (gfc_match_char (',') != MATCH_YES) | |
4973 | goto syntax; | |
4974 | } | |
4975 | ||
4976 | syntax: | |
4977 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4978 | return MATCH_ERROR; | |
8fb74da4 JW |
4979 | |
4980 | cleanup: | |
4981 | /* Free stuff up and return. */ | |
4982 | gfc_free_expr (initializer); | |
4983 | return m; | |
69773742 JW |
4984 | } |
4985 | ||
4986 | ||
713485cc JW |
4987 | static match |
4988 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4989 | ||
4990 | ||
4991 | /* Match a procedure pointer component declaration (R445). */ | |
4992 | ||
4993 | static match | |
4994 | match_ppc_decl (void) | |
4995 | { | |
4996 | match m; | |
4997 | gfc_symbol *proc_if = NULL; | |
4998 | gfc_typespec ts; | |
4999 | int num; | |
5000 | gfc_component *c; | |
5001 | gfc_expr *initializer = NULL; | |
5002 | gfc_typebound_proc* tb; | |
5003 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5004 | ||
5005 | /* Parse interface (with brackets). */ | |
5006 | m = match_procedure_interface (&proc_if); | |
5007 | if (m != MATCH_YES) | |
5008 | goto syntax; | |
5009 | ||
5010 | /* Parse attributes. */ | |
5011 | tb = XCNEW (gfc_typebound_proc); | |
5012 | tb->where = gfc_current_locus; | |
5013 | m = match_binding_attributes (tb, false, true); | |
5014 | if (m == MATCH_ERROR) | |
5015 | return m; | |
5016 | ||
713485cc JW |
5017 | gfc_clear_attr (¤t_attr); |
5018 | current_attr.procedure = 1; | |
5019 | current_attr.proc_pointer = 1; | |
5020 | current_attr.access = tb->access; | |
5021 | current_attr.flavor = FL_PROCEDURE; | |
5022 | ||
5023 | /* Match the colons (required). */ | |
5024 | if (gfc_match (" ::") != MATCH_YES) | |
5025 | { | |
5026 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
5027 | return MATCH_ERROR; | |
5028 | } | |
5029 | ||
5030 | /* Check for C450. */ | |
5031 | if (!tb->nopass && proc_if == NULL) | |
5032 | { | |
5033 | gfc_error("NOPASS or explicit interface required at %C"); | |
5034 | return MATCH_ERROR; | |
5035 | } | |
5036 | ||
9717f7a1 | 5037 | if (gfc_notify_std (GFC_STD_F2003, "Procedure pointer " |
3212c187 SK |
5038 | "component at %C") == FAILURE) |
5039 | return MATCH_ERROR; | |
5040 | ||
713485cc JW |
5041 | /* Match PPC names. */ |
5042 | ts = current_ts; | |
5043 | for(num=1;;num++) | |
5044 | { | |
5045 | m = gfc_match_name (name); | |
5046 | if (m == MATCH_NO) | |
5047 | goto syntax; | |
5048 | else if (m == MATCH_ERROR) | |
5049 | return m; | |
5050 | ||
5051 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
5052 | return MATCH_ERROR; | |
5053 | ||
5054 | /* Add current_attr to the symbol attributes. */ | |
5055 | if (gfc_copy_attr (&c->attr, ¤t_attr, NULL) == FAILURE) | |
5056 | return MATCH_ERROR; | |
5057 | ||
5058 | if (gfc_add_external (&c->attr, NULL) == FAILURE) | |
5059 | return MATCH_ERROR; | |
5060 | ||
5061 | if (gfc_add_proc (&c->attr, name, NULL) == FAILURE) | |
5062 | return MATCH_ERROR; | |
5063 | ||
90661f26 JW |
5064 | c->tb = tb; |
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); | |
5077 | c->ts.interface->ts = ts; | |
d91909c0 | 5078 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5079 | c->ts.interface->attr.function = 1; |
d91909c0 | 5080 | c->attr.function = 1; |
713485cc JW |
5081 | c->attr.if_source = IFSRC_UNKNOWN; |
5082 | } | |
5083 | ||
5084 | if (gfc_match (" =>") == MATCH_YES) | |
5085 | { | |
80f95228 | 5086 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5087 | if (m != MATCH_YES) |
5088 | { | |
5089 | gfc_free_expr (initializer); | |
5090 | return m; | |
5091 | } | |
5092 | c->initializer = initializer; | |
5093 | } | |
5094 | ||
5095 | if (gfc_match_eos () == MATCH_YES) | |
5096 | return MATCH_YES; | |
5097 | if (gfc_match_char (',') != MATCH_YES) | |
5098 | goto syntax; | |
5099 | } | |
5100 | ||
5101 | syntax: | |
5102 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5103 | return MATCH_ERROR; | |
5104 | } | |
5105 | ||
5106 | ||
69773742 JW |
5107 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5108 | ||
5109 | static match | |
5110 | match_procedure_in_interface (void) | |
5111 | { | |
5112 | match m; | |
5113 | gfc_symbol *sym; | |
5114 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5115 | locus old_locus; |
69773742 JW |
5116 | |
5117 | if (current_interface.type == INTERFACE_NAMELESS | |
5118 | || current_interface.type == INTERFACE_ABSTRACT) | |
5119 | { | |
5120 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5121 | return MATCH_ERROR; | |
5122 | } | |
5123 | ||
a6fcd41a TB |
5124 | /* Check if the F2008 optional double colon appears. */ |
5125 | gfc_gobble_whitespace (); | |
5126 | old_locus = gfc_current_locus; | |
5127 | if (gfc_match ("::") == MATCH_YES) | |
5128 | { | |
9717f7a1 | 5129 | if (gfc_notify_std (GFC_STD_F2008, "double colon in " |
a6fcd41a TB |
5130 | "MODULE PROCEDURE statement at %L", &old_locus) |
5131 | == FAILURE) | |
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 | ||
5147 | if (gfc_add_interface (sym) == FAILURE) | |
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 | ||
9717f7a1 | 5199 | if (gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C") |
69773742 JW |
5200 | == FAILURE) |
5201 | return MATCH_ERROR; | |
5202 | ||
5203 | return m; | |
5204 | } | |
5205 | ||
5206 | ||
c3005b0f DK |
5207 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5208 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5209 | parser-state-stack to find out whether we're in a module. */ | |
5210 | ||
5211 | static void | |
5212 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5213 | { | |
5214 | bool in_module; | |
5215 | ||
5216 | in_module = (gfc_state_stack->previous | |
5217 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5218 | ||
5219 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5220 | } | |
5221 | ||
5222 | ||
6de9cd9a DN |
5223 | /* Match a function declaration. */ |
5224 | ||
5225 | match | |
5226 | gfc_match_function_decl (void) | |
5227 | { | |
5228 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5229 | gfc_symbol *sym, *result; | |
5230 | locus old_loc; | |
5231 | match m; | |
a8b3b0b6 CR |
5232 | match suffix_match; |
5233 | match found_match; /* Status returned by match func. */ | |
6de9cd9a DN |
5234 | |
5235 | if (gfc_current_state () != COMP_NONE | |
5236 | && gfc_current_state () != COMP_INTERFACE | |
5237 | && gfc_current_state () != COMP_CONTAINS) | |
5238 | return MATCH_NO; | |
5239 | ||
5240 | gfc_clear_ts (¤t_ts); | |
5241 | ||
63645982 | 5242 | old_loc = gfc_current_locus; |
6de9cd9a | 5243 | |
1c8bcdf7 | 5244 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5245 | if (m != MATCH_YES) |
5246 | { | |
63645982 | 5247 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5248 | return m; |
5249 | } | |
5250 | ||
5251 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5252 | { | |
63645982 | 5253 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5254 | return MATCH_NO; |
5255 | } | |
1a492601 | 5256 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5257 | return MATCH_ERROR; |
3070bab4 JW |
5258 | |
5259 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
5260 | sym = sym->result; | |
5261 | ||
6de9cd9a DN |
5262 | gfc_new_block = sym; |
5263 | ||
5264 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5265 | if (m == MATCH_NO) | |
2b9a33ae TS |
5266 | { |
5267 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5268 | "definition at %C"); |
2b9a33ae TS |
5269 | m = MATCH_ERROR; |
5270 | goto cleanup; | |
5271 | } | |
6de9cd9a DN |
5272 | else if (m == MATCH_ERROR) |
5273 | goto cleanup; | |
5274 | ||
5275 | result = NULL; | |
5276 | ||
a8b3b0b6 CR |
5277 | /* According to the draft, the bind(c) and result clause can |
5278 | come in either order after the formal_arg_list (i.e., either | |
5279 | can be first, both can exist together or by themselves or neither | |
5280 | one). Therefore, the match_result can't match the end of the | |
5281 | string, and check for the bind(c) or result clause in either order. */ | |
5282 | found_match = gfc_match_eos (); | |
5283 | ||
5284 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5285 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5286 | not allowed for procedures. */ | |
5287 | if (sym->attr.is_bind_c == 1) | |
5288 | { | |
5289 | sym->attr.is_bind_c = 0; | |
5290 | if (sym->old_symbol != NULL) | |
5291 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5292 | "variables or common blocks", | |
5293 | &(sym->old_symbol->declared_at)); | |
5294 | else | |
5295 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5296 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5297 | } |
5298 | ||
a8b3b0b6 | 5299 | if (found_match != MATCH_YES) |
6de9cd9a | 5300 | { |
a8b3b0b6 CR |
5301 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5302 | suffix_match = gfc_match_suffix (sym, &result); | |
5303 | if (suffix_match == MATCH_YES) | |
5304 | /* Need to get the eos now. */ | |
5305 | found_match = gfc_match_eos (); | |
5306 | else | |
5307 | found_match = suffix_match; | |
6de9cd9a DN |
5308 | } |
5309 | ||
a8b3b0b6 CR |
5310 | if(found_match != MATCH_YES) |
5311 | m = MATCH_ERROR; | |
6de9cd9a DN |
5312 | else |
5313 | { | |
a8b3b0b6 CR |
5314 | /* Make changes to the symbol. */ |
5315 | m = MATCH_ERROR; | |
5316 | ||
5317 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
5318 | goto cleanup; | |
5319 | ||
5320 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
5321 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5322 | goto cleanup; | |
6de9cd9a | 5323 | |
a99d95a2 | 5324 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5325 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5326 | sym->declared_at = old_loc; |
5327 | if (current_ts.type != BT_UNKNOWN) | |
5328 | current_ts.kind = -1; | |
5329 | else | |
5330 | current_ts.kind = 0; | |
1c8bcdf7 | 5331 | |
a8b3b0b6 CR |
5332 | if (result == NULL) |
5333 | { | |
6de7294f JW |
5334 | if (current_ts.type != BT_UNKNOWN |
5335 | && gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) | |
5336 | goto cleanup; | |
a8b3b0b6 CR |
5337 | sym->result = sym; |
5338 | } | |
5339 | else | |
5340 | { | |
6de7294f JW |
5341 | if (current_ts.type != BT_UNKNOWN |
5342 | && gfc_add_type (result, ¤t_ts, &gfc_current_locus) | |
5343 | == FAILURE) | |
5344 | goto cleanup; | |
a8b3b0b6 CR |
5345 | sym->result = result; |
5346 | } | |
5347 | ||
c3005b0f DK |
5348 | /* Warn if this procedure has the same name as an intrinsic. */ |
5349 | warn_intrinsic_shadow (sym, true); | |
5350 | ||
a8b3b0b6 CR |
5351 | return MATCH_YES; |
5352 | } | |
6de9cd9a DN |
5353 | |
5354 | cleanup: | |
63645982 | 5355 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5356 | return m; |
5357 | } | |
5358 | ||
636dff67 SK |
5359 | |
5360 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5361 | pass the name of the entry, rather than the gfc_current_block name, and | |
5362 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5363 | |
5364 | static bool | |
636dff67 | 5365 | add_global_entry (const char *name, int sub) |
68ea355b PT |
5366 | { |
5367 | gfc_gsymbol *s; | |
32e8bb8e | 5368 | enum gfc_symbol_type type; |
68ea355b PT |
5369 | |
5370 | s = gfc_get_gsymbol(name); | |
7389bce6 | 5371 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b PT |
5372 | |
5373 | if (s->defined | |
636dff67 | 5374 | || (s->type != GSYM_UNKNOWN |
7389bce6 | 5375 | && s->type != type)) |
ca39e6f2 | 5376 | gfc_global_used(s, NULL); |
68ea355b PT |
5377 | else |
5378 | { | |
7389bce6 | 5379 | s->type = type; |
68ea355b PT |
5380 | s->where = gfc_current_locus; |
5381 | s->defined = 1; | |
71a7778c | 5382 | s->ns = gfc_current_ns; |
68ea355b PT |
5383 | return true; |
5384 | } | |
5385 | return false; | |
5386 | } | |
6de9cd9a | 5387 | |
636dff67 | 5388 | |
6de9cd9a DN |
5389 | /* Match an ENTRY statement. */ |
5390 | ||
5391 | match | |
5392 | gfc_match_entry (void) | |
5393 | { | |
3d79abbd PB |
5394 | gfc_symbol *proc; |
5395 | gfc_symbol *result; | |
5396 | gfc_symbol *entry; | |
6de9cd9a DN |
5397 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5398 | gfc_compile_state state; | |
5399 | match m; | |
3d79abbd | 5400 | gfc_entry_list *el; |
c96cfa49 | 5401 | locus old_loc; |
1a492601 | 5402 | bool module_procedure; |
bc3e7a8c TB |
5403 | char peek_char; |
5404 | match is_bind_c; | |
6de9cd9a DN |
5405 | |
5406 | m = gfc_match_name (name); | |
5407 | if (m != MATCH_YES) | |
5408 | return m; | |
5409 | ||
9717f7a1 | 5410 | if (gfc_notify_std (GFC_STD_F2008_OBS, |
58fc89f6 TB |
5411 | "ENTRY statement at %C") == FAILURE) |
5412 | return MATCH_ERROR; | |
5413 | ||
3d79abbd | 5414 | state = gfc_current_state (); |
4c93c95a | 5415 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5416 | { |
4c93c95a FXC |
5417 | switch (state) |
5418 | { | |
5419 | case COMP_PROGRAM: | |
5420 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5421 | break; | |
5422 | case COMP_MODULE: | |
5423 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5424 | break; | |
5425 | case COMP_BLOCK_DATA: | |
636dff67 SK |
5426 | gfc_error ("ENTRY statement at %C cannot appear within " |
5427 | "a BLOCK DATA"); | |
4c93c95a FXC |
5428 | break; |
5429 | case COMP_INTERFACE: | |
636dff67 SK |
5430 | gfc_error ("ENTRY statement at %C cannot appear within " |
5431 | "an INTERFACE"); | |
4c93c95a FXC |
5432 | break; |
5433 | case COMP_DERIVED: | |
636dff67 SK |
5434 | gfc_error ("ENTRY statement at %C cannot appear within " |
5435 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5436 | break; |
5437 | case COMP_IF: | |
636dff67 SK |
5438 | gfc_error ("ENTRY statement at %C cannot appear within " |
5439 | "an IF-THEN block"); | |
4c93c95a FXC |
5440 | break; |
5441 | case COMP_DO: | |
8c6a85e3 | 5442 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5443 | gfc_error ("ENTRY statement at %C cannot appear within " |
5444 | "a DO block"); | |
4c93c95a FXC |
5445 | break; |
5446 | case COMP_SELECT: | |
636dff67 SK |
5447 | gfc_error ("ENTRY statement at %C cannot appear within " |
5448 | "a SELECT block"); | |
4c93c95a FXC |
5449 | break; |
5450 | case COMP_FORALL: | |
636dff67 SK |
5451 | gfc_error ("ENTRY statement at %C cannot appear within " |
5452 | "a FORALL block"); | |
4c93c95a FXC |
5453 | break; |
5454 | case COMP_WHERE: | |
636dff67 SK |
5455 | gfc_error ("ENTRY statement at %C cannot appear within " |
5456 | "a WHERE block"); | |
4c93c95a FXC |
5457 | break; |
5458 | case COMP_CONTAINS: | |
636dff67 SK |
5459 | gfc_error ("ENTRY statement at %C cannot appear within " |
5460 | "a contained subprogram"); | |
4c93c95a FXC |
5461 | break; |
5462 | default: | |
5463 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5464 | } | |
3d79abbd PB |
5465 | return MATCH_ERROR; |
5466 | } | |
5467 | ||
1a492601 | 5468 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5469 | && gfc_current_ns->parent->proc_name |
5470 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5471 | == FL_MODULE; | |
1a492601 | 5472 | |
3d79abbd PB |
5473 | if (gfc_current_ns->parent != NULL |
5474 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5475 | && !module_procedure) |
3d79abbd PB |
5476 | { |
5477 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5478 | "contained procedure"); | |
5479 | return MATCH_ERROR; | |
5480 | } | |
5481 | ||
1a492601 PT |
5482 | /* Module function entries need special care in get_proc_name |
5483 | because previous references within the function will have | |
5484 | created symbols attached to the current namespace. */ | |
5485 | if (get_proc_name (name, &entry, | |
5486 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5487 | && module_procedure)) |
6de9cd9a DN |
5488 | return MATCH_ERROR; |
5489 | ||
3d79abbd PB |
5490 | proc = gfc_current_block (); |
5491 | ||
bc3e7a8c TB |
5492 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5493 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5494 | not allowed for procedures. */ | |
5495 | if (entry->attr.is_bind_c == 1) | |
5496 | { | |
5497 | entry->attr.is_bind_c = 0; | |
5498 | if (entry->old_symbol != NULL) | |
5499 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5500 | "variables or common blocks", | |
5501 | &(entry->old_symbol->declared_at)); | |
5502 | else | |
5503 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5504 | "variables or common blocks", &gfc_current_locus); | |
5505 | } | |
5506 | ||
5507 | /* Check what next non-whitespace character is so we can tell if there | |
5508 | is the required parens if we have a BIND(C). */ | |
5509 | gfc_gobble_whitespace (); | |
8fc541d3 | 5510 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5511 | |
3d79abbd | 5512 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5513 | { |
231b2fcc | 5514 | /* An entry in a subroutine. */ |
182393f4 | 5515 | if (!gfc_current_ns->parent && !add_global_entry (name, 1)) |
68ea355b PT |
5516 | return MATCH_ERROR; |
5517 | ||
6de9cd9a DN |
5518 | m = gfc_match_formal_arglist (entry, 0, 1); |
5519 | if (m != MATCH_YES) | |
5520 | return MATCH_ERROR; | |
5521 | ||
1eabf70a TB |
5522 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5523 | never be an internal procedure. */ | |
5524 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5525 | if (is_bind_c == MATCH_ERROR) |
5526 | return MATCH_ERROR; | |
5527 | if (is_bind_c == MATCH_YES) | |
5528 | { | |
5529 | if (peek_char != '(') | |
5530 | { | |
5531 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5532 | return MATCH_ERROR; | |
5533 | } | |
5534 | if (gfc_add_is_bind_c (&(entry->attr), entry->name, &(entry->declared_at), 1) | |
5535 | == FAILURE) | |
5536 | return MATCH_ERROR; | |
5537 | } | |
5538 | ||
231b2fcc TS |
5539 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5540 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a | 5541 | return MATCH_ERROR; |
3d79abbd PB |
5542 | } |
5543 | else | |
5544 | { | |
c96cfa49 | 5545 | /* An entry in a function. |
636dff67 SK |
5546 | We need to take special care because writing |
5547 | ENTRY f() | |
5548 | as | |
5549 | ENTRY f | |
5550 | is allowed, whereas | |
5551 | ENTRY f() RESULT (r) | |
5552 | can't be written as | |
5553 | ENTRY f RESULT (r). */ | |
182393f4 | 5554 | if (!gfc_current_ns->parent && !add_global_entry (name, 0)) |
68ea355b PT |
5555 | return MATCH_ERROR; |
5556 | ||
c96cfa49 TS |
5557 | old_loc = gfc_current_locus; |
5558 | if (gfc_match_eos () == MATCH_YES) | |
5559 | { | |
5560 | gfc_current_locus = old_loc; | |
5561 | /* Match the empty argument list, and add the interface to | |
5562 | the symbol. */ | |
5563 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5564 | } | |
5565 | else | |
5566 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5567 | ||
6de9cd9a DN |
5568 | if (m != MATCH_YES) |
5569 | return MATCH_ERROR; | |
5570 | ||
6de9cd9a DN |
5571 | result = NULL; |
5572 | ||
5573 | if (gfc_match_eos () == MATCH_YES) | |
5574 | { | |
231b2fcc TS |
5575 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5576 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a DN |
5577 | return MATCH_ERROR; |
5578 | ||
d198b59a | 5579 | entry->result = entry; |
6de9cd9a DN |
5580 | } |
5581 | else | |
5582 | { | |
bc3e7a8c | 5583 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5584 | if (m == MATCH_NO) |
5585 | gfc_syntax_error (ST_ENTRY); | |
5586 | if (m != MATCH_YES) | |
5587 | return MATCH_ERROR; | |
5588 | ||
bc3e7a8c TB |
5589 | if (result) |
5590 | { | |
5591 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE | |
5592 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
5593 | || gfc_add_function (&entry->attr, result->name, NULL) | |
5594 | == FAILURE) | |
5595 | return MATCH_ERROR; | |
5596 | entry->result = result; | |
5597 | } | |
5598 | else | |
5599 | { | |
5600 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE | |
5601 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
5602 | return MATCH_ERROR; | |
5603 | entry->result = entry; | |
5604 | } | |
6de9cd9a | 5605 | } |
6de9cd9a DN |
5606 | } |
5607 | ||
5608 | if (gfc_match_eos () != MATCH_YES) | |
5609 | { | |
5610 | gfc_syntax_error (ST_ENTRY); | |
5611 | return MATCH_ERROR; | |
5612 | } | |
5613 | ||
3d79abbd PB |
5614 | entry->attr.recursive = proc->attr.recursive; |
5615 | entry->attr.elemental = proc->attr.elemental; | |
5616 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5617 | |
3d79abbd PB |
5618 | el = gfc_get_entry_list (); |
5619 | el->sym = entry; | |
5620 | el->next = gfc_current_ns->entries; | |
5621 | gfc_current_ns->entries = el; | |
5622 | if (el->next) | |
5623 | el->id = el->next->id + 1; | |
5624 | else | |
5625 | el->id = 1; | |
6de9cd9a | 5626 | |
3d79abbd PB |
5627 | new_st.op = EXEC_ENTRY; |
5628 | new_st.ext.entry = el; | |
5629 | ||
5630 | return MATCH_YES; | |
6de9cd9a DN |
5631 | } |
5632 | ||
5633 | ||
5634 | /* Match a subroutine statement, including optional prefixes. */ | |
5635 | ||
5636 | match | |
5637 | gfc_match_subroutine (void) | |
5638 | { | |
5639 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5640 | gfc_symbol *sym; | |
5641 | match m; | |
a8b3b0b6 CR |
5642 | match is_bind_c; |
5643 | char peek_char; | |
1eabf70a | 5644 | bool allow_binding_name; |
6de9cd9a DN |
5645 | |
5646 | if (gfc_current_state () != COMP_NONE | |
5647 | && gfc_current_state () != COMP_INTERFACE | |
5648 | && gfc_current_state () != COMP_CONTAINS) | |
5649 | return MATCH_NO; | |
5650 | ||
1c8bcdf7 | 5651 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5652 | if (m != MATCH_YES) |
5653 | return m; | |
5654 | ||
5655 | m = gfc_match ("subroutine% %n", name); | |
5656 | if (m != MATCH_YES) | |
5657 | return m; | |
5658 | ||
1a492601 | 5659 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5660 | return MATCH_ERROR; |
3070bab4 | 5661 | |
7fcd5ad5 TB |
5662 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5663 | the symbol existed before. */ | |
5664 | sym->declared_at = gfc_current_locus; | |
5665 | ||
3070bab4 JW |
5666 | if (add_hidden_procptr_result (sym) == SUCCESS) |
5667 | sym = sym->result; | |
5668 | ||
6de9cd9a DN |
5669 | gfc_new_block = sym; |
5670 | ||
a8b3b0b6 | 5671 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5672 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5673 | gfc_gobble_whitespace (); |
8fc541d3 | 5674 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 5675 | |
231b2fcc | 5676 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5677 | return MATCH_ERROR; |
5678 | ||
5679 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5680 | return MATCH_ERROR; | |
5681 | ||
a8b3b0b6 CR |
5682 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5683 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5684 | not allowed for procedures. */ | |
5685 | if (sym->attr.is_bind_c == 1) | |
5686 | { | |
5687 | sym->attr.is_bind_c = 0; | |
5688 | if (sym->old_symbol != NULL) | |
5689 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5690 | "variables or common blocks", | |
5691 | &(sym->old_symbol->declared_at)); | |
5692 | else | |
5693 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5694 | "variables or common blocks", &gfc_current_locus); | |
5695 | } | |
1eabf70a TB |
5696 | |
5697 | /* C binding names are not allowed for internal procedures. */ | |
5698 | if (gfc_current_state () == COMP_CONTAINS | |
5699 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5700 | allow_binding_name = false; | |
5701 | else | |
5702 | allow_binding_name = true; | |
5703 | ||
a8b3b0b6 CR |
5704 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5705 | so, then we need to make sure it's all correct. If it doesn't, | |
5706 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5707 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5708 | if (is_bind_c == MATCH_ERROR) |
5709 | { | |
5710 | /* There was an attempt at the bind(c), but it was wrong. An | |
5711 | error message should have been printed w/in the gfc_match_bind_c | |
5712 | so here we'll just return the MATCH_ERROR. */ | |
5713 | return MATCH_ERROR; | |
5714 | } | |
5715 | ||
5716 | if (is_bind_c == MATCH_YES) | |
5717 | { | |
1eabf70a | 5718 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 5719 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5720 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
9717f7a1 | 5721 | && gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
fdc54e88 FXC |
5722 | "at %L may not be specified for an internal " |
5723 | "procedure", &gfc_current_locus) | |
1eabf70a TB |
5724 | == FAILURE) |
5725 | return MATCH_ERROR; | |
5726 | ||
a8b3b0b6 CR |
5727 | if (peek_char != '(') |
5728 | { | |
5729 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5730 | return MATCH_ERROR; | |
5731 | } | |
5732 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
5733 | == FAILURE) | |
5734 | return MATCH_ERROR; | |
5735 | } | |
5736 | ||
6de9cd9a DN |
5737 | if (gfc_match_eos () != MATCH_YES) |
5738 | { | |
5739 | gfc_syntax_error (ST_SUBROUTINE); | |
5740 | return MATCH_ERROR; | |
5741 | } | |
5742 | ||
5743 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5744 | return MATCH_ERROR; | |
5745 | ||
c3005b0f DK |
5746 | /* Warn if it has the same name as an intrinsic. */ |
5747 | warn_intrinsic_shadow (sym, false); | |
5748 | ||
6de9cd9a DN |
5749 | return MATCH_YES; |
5750 | } | |
5751 | ||
5752 | ||
a8b3b0b6 CR |
5753 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5754 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 5755 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
5756 | encounter the BIND(C) before the declaration itself. Return |
5757 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5758 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5759 | or MATCH_YES if the specifier was correct and the binding label and | |
5760 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
5761 | current_ts. If allow_binding_name is false, no binding name may be |
5762 | given. */ | |
a8b3b0b6 CR |
5763 | |
5764 | match | |
1eabf70a | 5765 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 CR |
5766 | { |
5767 | /* binding label, if exists */ | |
9975a30b | 5768 | const char* binding_label = NULL; |
a8b3b0b6 CR |
5769 | match double_quote; |
5770 | match single_quote; | |
a8b3b0b6 CR |
5771 | |
5772 | /* Initialize the flag that specifies whether we encountered a NAME= | |
5773 | specifier or not. */ | |
5774 | has_name_equals = 0; | |
5775 | ||
a8b3b0b6 CR |
5776 | /* This much we have to be able to match, in this order, if |
5777 | there is a bind(c) label. */ | |
5778 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5779 | return MATCH_NO; | |
5780 | ||
5781 | /* Now see if there is a binding label, or if we've reached the | |
5782 | end of the bind(c) attribute without one. */ | |
5783 | if (gfc_match_char (',') == MATCH_YES) | |
5784 | { | |
5785 | if (gfc_match (" name = ") != MATCH_YES) | |
5786 | { | |
5787 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5788 | "at %C"); | |
5789 | /* should give an error message here */ | |
5790 | return MATCH_ERROR; | |
5791 | } | |
5792 | ||
5793 | has_name_equals = 1; | |
5794 | ||
5795 | /* Get the opening quote. */ | |
5796 | double_quote = MATCH_YES; | |
5797 | single_quote = MATCH_YES; | |
5798 | double_quote = gfc_match_char ('"'); | |
5799 | if (double_quote != MATCH_YES) | |
5800 | single_quote = gfc_match_char ('\''); | |
5801 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5802 | { | |
5803 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5804 | "at %C"); | |
5805 | return MATCH_ERROR; | |
5806 | } | |
5807 | ||
5808 | /* Grab the binding label, using functions that will not lower | |
5809 | case the names automatically. */ | |
62603fae | 5810 | if (gfc_match_name_C (&binding_label) != MATCH_YES) |
a8b3b0b6 CR |
5811 | return MATCH_ERROR; |
5812 | ||
5813 | /* Get the closing quotation. */ | |
5814 | if (double_quote == MATCH_YES) | |
5815 | { | |
5816 | if (gfc_match_char ('"') != MATCH_YES) | |
5817 | { | |
5818 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5819 | /* User started string with '"' so looked to match it. */ | |
5820 | return MATCH_ERROR; | |
5821 | } | |
5822 | } | |
5823 | else | |
5824 | { | |
5825 | if (gfc_match_char ('\'') != MATCH_YES) | |
5826 | { | |
5827 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5828 | /* User started string with "'" char. */ | |
5829 | return MATCH_ERROR; | |
5830 | } | |
5831 | } | |
5832 | } | |
5833 | ||
5834 | /* Get the required right paren. */ | |
5835 | if (gfc_match_char (')') != MATCH_YES) | |
5836 | { | |
5837 | gfc_error ("Missing closing paren for binding label at %C"); | |
5838 | return MATCH_ERROR; | |
5839 | } | |
5840 | ||
1eabf70a TB |
5841 | if (has_name_equals && !allow_binding_name) |
5842 | { | |
5843 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5844 | return MATCH_ERROR; | |
5845 | } | |
5846 | ||
5847 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5848 | { | |
5849 | gfc_error ("For dummy procedure %s, no binding name is " | |
5850 | "allowed in BIND(C) at %C", sym->name); | |
5851 | return MATCH_ERROR; | |
5852 | } | |
5853 | ||
5854 | ||
a8b3b0b6 CR |
5855 | /* Save the binding label to the symbol. If sym is null, we're |
5856 | probably matching the typespec attributes of a declaration and | |
5857 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 5858 | if (binding_label) |
a8b3b0b6 CR |
5859 | { |
5860 | if (sym != NULL) | |
62603fae | 5861 | sym->binding_label = binding_label; |
a8b3b0b6 | 5862 | else |
62603fae | 5863 | curr_binding_label = binding_label; |
a8b3b0b6 | 5864 | } |
1eabf70a | 5865 | else if (allow_binding_name) |
a8b3b0b6 CR |
5866 | { |
5867 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
5868 | can set the label for it here. |
5869 | If name="" or allow_binding_name is false, no C binding name is | |
5870 | created. */ | |
a8b3b0b6 | 5871 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 5872 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 5873 | } |
9e1d712c | 5874 | |
129d15a3 JW |
5875 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5876 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
5877 | { |
5878 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5879 | return MATCH_ERROR; | |
5880 | } | |
5881 | ||
a8b3b0b6 CR |
5882 | return MATCH_YES; |
5883 | } | |
5884 | ||
5885 | ||
1f2959f0 | 5886 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
5887 | |
5888 | static int | |
5889 | contained_procedure (void) | |
5890 | { | |
083de129 | 5891 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 5892 | |
083de129 TB |
5893 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5894 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5895 | return 1; | |
ddc9ce91 TS |
5896 | |
5897 | return 0; | |
5898 | } | |
5899 | ||
d51347f9 | 5900 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
5901 | interoperable with the corresponding C enumeration type, making |
5902 | sure that -fshort-enums is honored. */ | |
5903 | ||
5904 | static void | |
5905 | set_enum_kind(void) | |
5906 | { | |
5907 | enumerator_history *current_history = NULL; | |
5908 | int kind; | |
5909 | int i; | |
5910 | ||
5911 | if (max_enum == NULL || enum_history == NULL) | |
5912 | return; | |
5913 | ||
cab129d1 | 5914 | if (!flag_short_enums) |
d51347f9 TB |
5915 | return; |
5916 | ||
25d8f0a2 TS |
5917 | i = 0; |
5918 | do | |
5919 | { | |
5920 | kind = gfc_integer_kinds[i++].kind; | |
5921 | } | |
d51347f9 | 5922 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
5923 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5924 | kind) != ARITH_OK); | |
5925 | ||
5926 | current_history = enum_history; | |
5927 | while (current_history != NULL) | |
5928 | { | |
5929 | current_history->sym->ts.kind = kind; | |
5930 | current_history = current_history->next; | |
5931 | } | |
5932 | } | |
5933 | ||
636dff67 | 5934 | |
6de9cd9a | 5935 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
5936 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5937 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
5938 | |
5939 | match | |
636dff67 | 5940 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
5941 | { |
5942 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5943 | gfc_compile_state state; | |
5944 | locus old_loc; | |
5945 | const char *block_name; | |
5946 | const char *target; | |
ddc9ce91 | 5947 | int eos_ok; |
6de9cd9a DN |
5948 | match m; |
5949 | ||
63645982 | 5950 | old_loc = gfc_current_locus; |
6de9cd9a DN |
5951 | if (gfc_match ("end") != MATCH_YES) |
5952 | return MATCH_NO; | |
5953 | ||
5954 | state = gfc_current_state (); | |
636dff67 SK |
5955 | block_name = gfc_current_block () == NULL |
5956 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 5957 | |
03af1e4c | 5958 | switch (state) |
6de9cd9a | 5959 | { |
03af1e4c DK |
5960 | case COMP_ASSOCIATE: |
5961 | case COMP_BLOCK: | |
3a1fd30c | 5962 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
5963 | block_name = NULL; |
5964 | break; | |
5965 | ||
5966 | case COMP_CONTAINS: | |
5967 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 5968 | state = gfc_state_stack->previous->state; |
636dff67 SK |
5969 | block_name = gfc_state_stack->previous->sym == NULL |
5970 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
5971 | break; |
5972 | ||
5973 | default: | |
5974 | break; | |
6de9cd9a DN |
5975 | } |
5976 | ||
5977 | switch (state) | |
5978 | { | |
5979 | case COMP_NONE: | |
5980 | case COMP_PROGRAM: | |
5981 | *st = ST_END_PROGRAM; | |
5982 | target = " program"; | |
ddc9ce91 | 5983 | eos_ok = 1; |
6de9cd9a DN |
5984 | break; |
5985 | ||
5986 | case COMP_SUBROUTINE: | |
5987 | *st = ST_END_SUBROUTINE; | |
5988 | target = " subroutine"; | |
ddc9ce91 | 5989 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5990 | break; |
5991 | ||
5992 | case COMP_FUNCTION: | |
5993 | *st = ST_END_FUNCTION; | |
5994 | target = " function"; | |
ddc9ce91 | 5995 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
5996 | break; |
5997 | ||
5998 | case COMP_BLOCK_DATA: | |
5999 | *st = ST_END_BLOCK_DATA; | |
6000 | target = " block data"; | |
ddc9ce91 | 6001 | eos_ok = 1; |
6de9cd9a DN |
6002 | break; |
6003 | ||
6004 | case COMP_MODULE: | |
6005 | *st = ST_END_MODULE; | |
6006 | target = " module"; | |
ddc9ce91 | 6007 | eos_ok = 1; |
6de9cd9a DN |
6008 | break; |
6009 | ||
6010 | case COMP_INTERFACE: | |
6011 | *st = ST_END_INTERFACE; | |
6012 | target = " interface"; | |
ddc9ce91 | 6013 | eos_ok = 0; |
6de9cd9a DN |
6014 | break; |
6015 | ||
6016 | case COMP_DERIVED: | |
30b608eb | 6017 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6018 | *st = ST_END_TYPE; |
6019 | target = " type"; | |
ddc9ce91 | 6020 | eos_ok = 0; |
6de9cd9a DN |
6021 | break; |
6022 | ||
03af1e4c DK |
6023 | case COMP_ASSOCIATE: |
6024 | *st = ST_END_ASSOCIATE; | |
6025 | target = " associate"; | |
6026 | eos_ok = 0; | |
6027 | break; | |
6028 | ||
9abe5e56 DK |
6029 | case COMP_BLOCK: |
6030 | *st = ST_END_BLOCK; | |
6031 | target = " block"; | |
6032 | eos_ok = 0; | |
6033 | break; | |
6034 | ||
6de9cd9a DN |
6035 | case COMP_IF: |
6036 | *st = ST_ENDIF; | |
6037 | target = " if"; | |
ddc9ce91 | 6038 | eos_ok = 0; |
6de9cd9a DN |
6039 | break; |
6040 | ||
6041 | case COMP_DO: | |
8c6a85e3 | 6042 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6043 | *st = ST_ENDDO; |
6044 | target = " do"; | |
ddc9ce91 | 6045 | eos_ok = 0; |
6de9cd9a DN |
6046 | break; |
6047 | ||
d0a4a61c TB |
6048 | case COMP_CRITICAL: |
6049 | *st = ST_END_CRITICAL; | |
6050 | target = " critical"; | |
6051 | eos_ok = 0; | |
6052 | break; | |
6053 | ||
6de9cd9a | 6054 | case COMP_SELECT: |
cf2b3c22 | 6055 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6056 | *st = ST_END_SELECT; |
6057 | target = " select"; | |
ddc9ce91 | 6058 | eos_ok = 0; |
6de9cd9a DN |
6059 | break; |
6060 | ||
6061 | case COMP_FORALL: | |
6062 | *st = ST_END_FORALL; | |
6063 | target = " forall"; | |
ddc9ce91 | 6064 | eos_ok = 0; |
6de9cd9a DN |
6065 | break; |
6066 | ||
6067 | case COMP_WHERE: | |
6068 | *st = ST_END_WHERE; | |
6069 | target = " where"; | |
ddc9ce91 | 6070 | eos_ok = 0; |
6de9cd9a DN |
6071 | break; |
6072 | ||
25d8f0a2 TS |
6073 | case COMP_ENUM: |
6074 | *st = ST_END_ENUM; | |
6075 | target = " enum"; | |
6076 | eos_ok = 0; | |
6077 | last_initializer = NULL; | |
6078 | set_enum_kind (); | |
6079 | gfc_free_enum_history (); | |
6080 | break; | |
6081 | ||
6de9cd9a DN |
6082 | default: |
6083 | gfc_error ("Unexpected END statement at %C"); | |
6084 | goto cleanup; | |
6085 | } | |
6086 | ||
6087 | if (gfc_match_eos () == MATCH_YES) | |
6088 | { | |
272001a2 TB |
6089 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6090 | { | |
9717f7a1 | 6091 | if (gfc_notify_std (GFC_STD_F2008, "END statement " |
272001a2 TB |
6092 | "instead of %s statement at %L", |
6093 | gfc_ascii_statement (*st), &old_loc) == FAILURE) | |
6094 | goto cleanup; | |
6095 | } | |
6096 | else if (!eos_ok) | |
6de9cd9a | 6097 | { |
66e4ab31 | 6098 | /* We would have required END [something]. */ |
59ce85b5 TS |
6099 | gfc_error ("%s statement expected at %L", |
6100 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6101 | goto cleanup; |
6102 | } | |
6103 | ||
6104 | return MATCH_YES; | |
6105 | } | |
6106 | ||
6107 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6108 | if (gfc_match (target) != MATCH_YES) | |
6109 | { | |
6110 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
6111 | goto cleanup; | |
6112 | } | |
6113 | ||
6114 | /* If we're at the end, make sure a block name wasn't required. */ | |
6115 | if (gfc_match_eos () == MATCH_YES) | |
6116 | { | |
6117 | ||
690af379 | 6118 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6119 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6120 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6121 | return MATCH_YES; |
6122 | ||
9abe5e56 | 6123 | if (!block_name) |
6de9cd9a DN |
6124 | return MATCH_YES; |
6125 | ||
6126 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
6127 | block_name, gfc_ascii_statement (*st)); | |
6128 | ||
6129 | return MATCH_ERROR; | |
6130 | } | |
6131 | ||
6132 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6133 | if (*st == ST_END_INTERFACE) | |
6134 | return gfc_match_end_interface (); | |
6135 | ||
66e4ab31 SK |
6136 | /* We haven't hit the end of statement, so what is left must be an |
6137 | end-name. */ | |
6de9cd9a DN |
6138 | m = gfc_match_space (); |
6139 | if (m == MATCH_YES) | |
6140 | m = gfc_match_name (name); | |
6141 | ||
6142 | if (m == MATCH_NO) | |
6143 | gfc_error ("Expected terminating name at %C"); | |
6144 | if (m != MATCH_YES) | |
6145 | goto cleanup; | |
6146 | ||
6147 | if (block_name == NULL) | |
6148 | goto syntax; | |
6149 | ||
3070bab4 | 6150 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a DN |
6151 | { |
6152 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6153 | gfc_ascii_statement (*st)); | |
6154 | goto cleanup; | |
6155 | } | |
3070bab4 JW |
6156 | /* Procedure pointer as function result. */ |
6157 | else if (strcmp (block_name, "ppr@") == 0 | |
6158 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6159 | { | |
6160 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6161 | gfc_current_block ()->ns->proc_name->name, | |
6162 | gfc_ascii_statement (*st)); | |
6163 | goto cleanup; | |
6164 | } | |
6de9cd9a DN |
6165 | |
6166 | if (gfc_match_eos () == MATCH_YES) | |
6167 | return MATCH_YES; | |
6168 | ||
6169 | syntax: | |
6170 | gfc_syntax_error (*st); | |
6171 | ||
6172 | cleanup: | |
63645982 | 6173 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6174 | return MATCH_ERROR; |
6175 | } | |
6176 | ||
6177 | ||
6178 | ||
6179 | /***************** Attribute declaration statements ****************/ | |
6180 | ||
6181 | /* Set the attribute of a single variable. */ | |
6182 | ||
6183 | static match | |
6184 | attr_decl1 (void) | |
6185 | { | |
6186 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6187 | gfc_array_spec *as; | |
6188 | gfc_symbol *sym; | |
6189 | locus var_locus; | |
6190 | match m; | |
6191 | ||
6192 | as = NULL; | |
6193 | ||
6194 | m = gfc_match_name (name); | |
6195 | if (m != MATCH_YES) | |
6196 | goto cleanup; | |
6197 | ||
08a6b8e0 | 6198 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6199 | return MATCH_ERROR; |
6200 | ||
bb9de0c4 JW |
6201 | if (check_function_name (name) == FAILURE) |
6202 | { | |
6203 | m = MATCH_ERROR; | |
6204 | goto cleanup; | |
6205 | } | |
6206 | ||
63645982 | 6207 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6208 | |
6209 | /* Deal with possible array specification for certain attributes. */ | |
6210 | if (current_attr.dimension | |
be59db2d | 6211 | || current_attr.codimension |
6de9cd9a DN |
6212 | || current_attr.allocatable |
6213 | || current_attr.pointer | |
6214 | || current_attr.target) | |
6215 | { | |
be59db2d TB |
6216 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6217 | !current_attr.dimension | |
6218 | && !current_attr.pointer | |
6219 | && !current_attr.target); | |
6de9cd9a DN |
6220 | if (m == MATCH_ERROR) |
6221 | goto cleanup; | |
6222 | ||
6223 | if (current_attr.dimension && m == MATCH_NO) | |
6224 | { | |
636dff67 SK |
6225 | gfc_error ("Missing array specification at %L in DIMENSION " |
6226 | "statement", &var_locus); | |
6de9cd9a DN |
6227 | m = MATCH_ERROR; |
6228 | goto cleanup; | |
6229 | } | |
6230 | ||
1283ab12 TB |
6231 | if (current_attr.dimension && sym->value) |
6232 | { | |
6233 | gfc_error ("Dimensions specified for %s at %L after its " | |
6234 | "initialisation", sym->name, &var_locus); | |
6235 | m = MATCH_ERROR; | |
6236 | goto cleanup; | |
6237 | } | |
6238 | ||
be59db2d TB |
6239 | if (current_attr.codimension && m == MATCH_NO) |
6240 | { | |
6241 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6242 | "statement", &var_locus); | |
6243 | m = MATCH_ERROR; | |
6244 | goto cleanup; | |
6245 | } | |
6246 | ||
6de9cd9a DN |
6247 | if ((current_attr.allocatable || current_attr.pointer) |
6248 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6249 | { | |
636dff67 | 6250 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6251 | m = MATCH_ERROR; |
6252 | goto cleanup; | |
6253 | } | |
6254 | } | |
6255 | ||
2e23972e JW |
6256 | /* Update symbol table. DIMENSION attribute is set in |
6257 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6258 | to the first component, or '_data' field. */ |
d40477b4 | 6259 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6260 | { |
b04533af | 6261 | if (gfc_copy_attr (&CLASS_DATA (sym)->attr, ¤t_attr, &var_locus) |
7a08eda1 | 6262 | == FAILURE) |
2e23972e JW |
6263 | { |
6264 | m = MATCH_ERROR; | |
6265 | goto cleanup; | |
6266 | } | |
2e23972e JW |
6267 | } |
6268 | else | |
6269 | { | |
be59db2d TB |
6270 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
6271 | && gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus) == FAILURE) | |
2e23972e JW |
6272 | { |
6273 | m = MATCH_ERROR; | |
6274 | goto cleanup; | |
6275 | } | |
6de9cd9a | 6276 | } |
d40477b4 | 6277 | |
528622fd | 6278 | if (sym->ts.type == BT_CLASS |
96d9b22c JW |
6279 | && gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false) == FAILURE) |
6280 | { | |
6281 | m = MATCH_ERROR; | |
6282 | goto cleanup; | |
6283 | } | |
6de9cd9a DN |
6284 | |
6285 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
6286 | { | |
6287 | m = MATCH_ERROR; | |
6288 | goto cleanup; | |
6289 | } | |
d51347f9 | 6290 | |
83d890b9 AL |
6291 | if (sym->attr.cray_pointee && sym->as != NULL) |
6292 | { | |
6293 | /* Fix the array spec. */ | |
6294 | m = gfc_mod_pointee_as (sym->as); | |
6295 | if (m == MATCH_ERROR) | |
6296 | goto cleanup; | |
6297 | } | |
6de9cd9a | 6298 | |
7114edca | 6299 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
1902704e PT |
6300 | { |
6301 | m = MATCH_ERROR; | |
6302 | goto cleanup; | |
6303 | } | |
6304 | ||
6de9cd9a DN |
6305 | if ((current_attr.external || current_attr.intrinsic) |
6306 | && sym->attr.flavor != FL_PROCEDURE | |
231b2fcc | 6307 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6308 | { |
6309 | m = MATCH_ERROR; | |
6310 | goto cleanup; | |
6311 | } | |
6312 | ||
3070bab4 JW |
6313 | add_hidden_procptr_result (sym); |
6314 | ||
6de9cd9a DN |
6315 | return MATCH_YES; |
6316 | ||
6317 | cleanup: | |
6318 | gfc_free_array_spec (as); | |
6319 | return m; | |
6320 | } | |
6321 | ||
6322 | ||
6323 | /* Generic attribute declaration subroutine. Used for attributes that | |
6324 | just have a list of names. */ | |
6325 | ||
6326 | static match | |
6327 | attr_decl (void) | |
6328 | { | |
6329 | match m; | |
6330 | ||
6331 | /* Gobble the optional double colon, by simply ignoring the result | |
6332 | of gfc_match(). */ | |
6333 | gfc_match (" ::"); | |
6334 | ||
6335 | for (;;) | |
6336 | { | |
6337 | m = attr_decl1 (); | |
6338 | if (m != MATCH_YES) | |
6339 | break; | |
6340 | ||
6341 | if (gfc_match_eos () == MATCH_YES) | |
6342 | { | |
6343 | m = MATCH_YES; | |
6344 | break; | |
6345 | } | |
6346 | ||
6347 | if (gfc_match_char (',') != MATCH_YES) | |
6348 | { | |
6349 | gfc_error ("Unexpected character in variable list at %C"); | |
6350 | m = MATCH_ERROR; | |
6351 | break; | |
6352 | } | |
6353 | } | |
6354 | ||
6355 | return m; | |
6356 | } | |
6357 | ||
6358 | ||
83d890b9 AL |
6359 | /* This routine matches Cray Pointer declarations of the form: |
6360 | pointer ( <pointer>, <pointee> ) | |
6361 | or | |
d51347f9 TB |
6362 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6363 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6364 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6365 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6366 | the pointee. For the statement |
83d890b9 AL |
6367 | pointer (ipt, ar(10)) |
6368 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6369 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6370 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6371 | |
6372 | static match | |
6373 | cray_pointer_decl (void) | |
6374 | { | |
6375 | match m; | |
be59db2d | 6376 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6377 | gfc_symbol *cptr; /* Pointer symbol. */ |
6378 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6379 | locus var_locus; | |
6380 | bool done = false; | |
6381 | ||
6382 | while (!done) | |
6383 | { | |
6384 | if (gfc_match_char ('(') != MATCH_YES) | |
6385 | { | |
6386 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 6387 | return MATCH_ERROR; |
83d890b9 | 6388 | } |
d51347f9 | 6389 | |
83d890b9 AL |
6390 | /* Match pointer. */ |
6391 | var_locus = gfc_current_locus; | |
6392 | gfc_clear_attr (¤t_attr); | |
6393 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6394 | current_ts.type = BT_INTEGER; | |
6395 | current_ts.kind = gfc_index_integer_kind; | |
6396 | ||
d51347f9 | 6397 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6398 | if (m != MATCH_YES) |
6399 | { | |
6400 | gfc_error ("Expected variable name at %C"); | |
6401 | return m; | |
6402 | } | |
d51347f9 | 6403 | |
83d890b9 AL |
6404 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
6405 | return MATCH_ERROR; | |
6406 | ||
d51347f9 | 6407 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6408 | |
6409 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6410 | { | |
6411 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6412 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6413 | } |
6414 | else if (cptr->ts.type != BT_INTEGER) | |
6415 | { | |
e25a0da3 | 6416 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6417 | return MATCH_ERROR; |
6418 | } | |
6419 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6420 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 6421 | " memory addresses require %d bytes", |
636dff67 | 6422 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6423 | |
6424 | if (gfc_match_char (',') != MATCH_YES) | |
6425 | { | |
6426 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6427 | return MATCH_ERROR; |
83d890b9 AL |
6428 | } |
6429 | ||
d51347f9 | 6430 | /* Match Pointee. */ |
83d890b9 AL |
6431 | var_locus = gfc_current_locus; |
6432 | gfc_clear_attr (¤t_attr); | |
6433 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6434 | current_ts.type = BT_UNKNOWN; | |
6435 | current_ts.kind = 0; | |
6436 | ||
6437 | m = gfc_match_symbol (&cpte, 0); | |
6438 | if (m != MATCH_YES) | |
6439 | { | |
6440 | gfc_error ("Expected variable name at %C"); | |
6441 | return m; | |
6442 | } | |
d51347f9 | 6443 | |
83d890b9 | 6444 | /* Check for an optional array spec. */ |
be59db2d | 6445 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6446 | if (m == MATCH_ERROR) |
6447 | { | |
6448 | gfc_free_array_spec (as); | |
6449 | return m; | |
6450 | } | |
6451 | else if (m == MATCH_NO) | |
6452 | { | |
6453 | gfc_free_array_spec (as); | |
6454 | as = NULL; | |
6455 | } | |
6456 | ||
6457 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
6458 | return MATCH_ERROR; | |
6459 | ||
6460 | gfc_set_sym_referenced (cpte); | |
6461 | ||
6462 | if (cpte->as == NULL) | |
6463 | { | |
6464 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
6465 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
6466 | } | |
6467 | else if (as != NULL) | |
6468 | { | |
e25a0da3 | 6469 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6470 | gfc_free_array_spec (as); |
6471 | return MATCH_ERROR; | |
6472 | } | |
6473 | ||
6474 | as = NULL; | |
6475 | ||
6476 | if (cpte->as != NULL) | |
6477 | { | |
6478 | /* Fix array spec. */ | |
6479 | m = gfc_mod_pointee_as (cpte->as); | |
6480 | if (m == MATCH_ERROR) | |
6481 | return m; | |
6482 | } | |
6483 | ||
6484 | /* Point the Pointee at the Pointer. */ | |
b122dc6a | 6485 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6486 | |
6487 | if (gfc_match_char (')') != MATCH_YES) | |
6488 | { | |
6489 | gfc_error ("Expected \")\" at %C"); | |
6490 | return MATCH_ERROR; | |
6491 | } | |
6492 | m = gfc_match_char (','); | |
6493 | if (m != MATCH_YES) | |
6494 | done = true; /* Stop searching for more declarations. */ | |
6495 | ||
6496 | } | |
6497 | ||
6498 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
6499 | || gfc_match_eos () != MATCH_YES) | |
6500 | { | |
6501 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6502 | return MATCH_ERROR; | |
6503 | } | |
6504 | return MATCH_YES; | |
6505 | } | |
6506 | ||
6507 | ||
6de9cd9a DN |
6508 | match |
6509 | gfc_match_external (void) | |
6510 | { | |
6511 | ||
6512 | gfc_clear_attr (¤t_attr); | |
1902704e | 6513 | current_attr.external = 1; |
6de9cd9a DN |
6514 | |
6515 | return attr_decl (); | |
6516 | } | |
6517 | ||
6518 | ||
6de9cd9a DN |
6519 | match |
6520 | gfc_match_intent (void) | |
6521 | { | |
6522 | sym_intent intent; | |
6523 | ||
9abe5e56 DK |
6524 | /* This is not allowed within a BLOCK construct! */ |
6525 | if (gfc_current_state () == COMP_BLOCK) | |
6526 | { | |
6527 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6528 | return MATCH_ERROR; | |
6529 | } | |
6530 | ||
6de9cd9a DN |
6531 | intent = match_intent_spec (); |
6532 | if (intent == INTENT_UNKNOWN) | |
6533 | return MATCH_ERROR; | |
6534 | ||
6535 | gfc_clear_attr (¤t_attr); | |
1902704e | 6536 | current_attr.intent = intent; |
6de9cd9a DN |
6537 | |
6538 | return attr_decl (); | |
6539 | } | |
6540 | ||
6541 | ||
6542 | match | |
6543 | gfc_match_intrinsic (void) | |
6544 | { | |
6545 | ||
6546 | gfc_clear_attr (¤t_attr); | |
1902704e | 6547 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6548 | |
6549 | return attr_decl (); | |
6550 | } | |
6551 | ||
6552 | ||
6553 | match | |
6554 | gfc_match_optional (void) | |
6555 | { | |
9abe5e56 DK |
6556 | /* This is not allowed within a BLOCK construct! */ |
6557 | if (gfc_current_state () == COMP_BLOCK) | |
6558 | { | |
6559 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6560 | return MATCH_ERROR; | |
6561 | } | |
6de9cd9a DN |
6562 | |
6563 | gfc_clear_attr (¤t_attr); | |
1902704e | 6564 | current_attr.optional = 1; |
6de9cd9a DN |
6565 | |
6566 | return attr_decl (); | |
6567 | } | |
6568 | ||
6569 | ||
6570 | match | |
6571 | gfc_match_pointer (void) | |
6572 | { | |
83d890b9 | 6573 | gfc_gobble_whitespace (); |
8fc541d3 | 6574 | if (gfc_peek_ascii_char () == '(') |
83d890b9 AL |
6575 | { |
6576 | if (!gfc_option.flag_cray_pointer) | |
6577 | { | |
636dff67 SK |
6578 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6579 | "flag"); | |
83d890b9 AL |
6580 | return MATCH_ERROR; |
6581 | } | |
6582 | return cray_pointer_decl (); | |
6583 | } | |
6584 | else | |
6585 | { | |
6586 | gfc_clear_attr (¤t_attr); | |
1902704e | 6587 | current_attr.pointer = 1; |
83d890b9 AL |
6588 | |
6589 | return attr_decl (); | |
6590 | } | |
6de9cd9a DN |
6591 | } |
6592 | ||
6593 | ||
6594 | match | |
6595 | gfc_match_allocatable (void) | |
6596 | { | |
6de9cd9a | 6597 | gfc_clear_attr (¤t_attr); |
1902704e | 6598 | current_attr.allocatable = 1; |
6de9cd9a DN |
6599 | |
6600 | return attr_decl (); | |
6601 | } | |
6602 | ||
6603 | ||
be59db2d TB |
6604 | match |
6605 | gfc_match_codimension (void) | |
6606 | { | |
6607 | gfc_clear_attr (¤t_attr); | |
6608 | current_attr.codimension = 1; | |
6609 | ||
6610 | return attr_decl (); | |
6611 | } | |
6612 | ||
6613 | ||
fe4e525c TB |
6614 | match |
6615 | gfc_match_contiguous (void) | |
6616 | { | |
9717f7a1 | 6617 | if (gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C") |
fe4e525c TB |
6618 | == FAILURE) |
6619 | return MATCH_ERROR; | |
6620 | ||
6621 | gfc_clear_attr (¤t_attr); | |
6622 | current_attr.contiguous = 1; | |
6623 | ||
6624 | return attr_decl (); | |
6625 | } | |
6626 | ||
6627 | ||
6de9cd9a DN |
6628 | match |
6629 | gfc_match_dimension (void) | |
6630 | { | |
6de9cd9a | 6631 | gfc_clear_attr (¤t_attr); |
1902704e | 6632 | current_attr.dimension = 1; |
6de9cd9a DN |
6633 | |
6634 | return attr_decl (); | |
6635 | } | |
6636 | ||
6637 | ||
6638 | match | |
6639 | gfc_match_target (void) | |
6640 | { | |
6de9cd9a | 6641 | gfc_clear_attr (¤t_attr); |
1902704e | 6642 | current_attr.target = 1; |
6de9cd9a DN |
6643 | |
6644 | return attr_decl (); | |
6645 | } | |
6646 | ||
6647 | ||
6648 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6649 | statement. */ | |
6650 | ||
6651 | static match | |
6652 | access_attr_decl (gfc_statement st) | |
6653 | { | |
6654 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6655 | interface_type type; | |
6656 | gfc_user_op *uop; | |
c3f34952 | 6657 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 6658 | gfc_intrinsic_op op; |
6de9cd9a DN |
6659 | match m; |
6660 | ||
6661 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6662 | goto done; | |
6663 | ||
6664 | for (;;) | |
6665 | { | |
a1ee985f | 6666 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
6667 | if (m == MATCH_NO) |
6668 | goto syntax; | |
6669 | if (m == MATCH_ERROR) | |
6670 | return MATCH_ERROR; | |
6671 | ||
6672 | switch (type) | |
6673 | { | |
6674 | case INTERFACE_NAMELESS: | |
9e1d712c | 6675 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
6676 | goto syntax; |
6677 | ||
6678 | case INTERFACE_GENERIC: | |
6679 | if (gfc_get_symbol (name, NULL, &sym)) | |
6680 | goto done; | |
6681 | ||
636dff67 SK |
6682 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
6683 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
231b2fcc | 6684 | sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6685 | return MATCH_ERROR; |
6686 | ||
c3f34952 TB |
6687 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
6688 | && gfc_add_access (&dt_sym->attr, | |
6689 | (st == ST_PUBLIC) ? ACCESS_PUBLIC | |
6690 | : ACCESS_PRIVATE, | |
6691 | sym->name, NULL) == FAILURE) | |
6692 | return MATCH_ERROR; | |
6693 | ||
6de9cd9a DN |
6694 | break; |
6695 | ||
6696 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 6697 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 6698 | { |
fb03a37e TK |
6699 | gfc_intrinsic_op other_op; |
6700 | ||
a1ee985f | 6701 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 6702 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
6703 | |
6704 | /* Handle the case if there is another op with the same | |
6705 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6706 | other_op = gfc_equivalent_op (op); | |
6707 | ||
6708 | if (other_op != INTRINSIC_NONE) | |
6709 | gfc_current_ns->operator_access[other_op] = | |
6710 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6711 | ||
6de9cd9a DN |
6712 | } |
6713 | else | |
6714 | { | |
6715 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 6716 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
6717 | goto done; |
6718 | } | |
6719 | ||
6720 | break; | |
6721 | ||
6722 | case INTERFACE_USER_OP: | |
6723 | uop = gfc_get_uop (name); | |
6724 | ||
6725 | if (uop->access == ACCESS_UNKNOWN) | |
6726 | { | |
636dff67 SK |
6727 | uop->access = (st == ST_PUBLIC) |
6728 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
6729 | } |
6730 | else | |
6731 | { | |
636dff67 SK |
6732 | gfc_error ("Access specification of the .%s. operator at %C " |
6733 | "has already been specified", sym->name); | |
6de9cd9a DN |
6734 | goto done; |
6735 | } | |
6736 | ||
6737 | break; | |
6738 | } | |
6739 | ||
6740 | if (gfc_match_char (',') == MATCH_NO) | |
6741 | break; | |
6742 | } | |
6743 | ||
6744 | if (gfc_match_eos () != MATCH_YES) | |
6745 | goto syntax; | |
6746 | return MATCH_YES; | |
6747 | ||
6748 | syntax: | |
6749 | gfc_syntax_error (st); | |
6750 | ||
6751 | done: | |
6752 | return MATCH_ERROR; | |
6753 | } | |
6754 | ||
6755 | ||
ee7e677f TB |
6756 | match |
6757 | gfc_match_protected (void) | |
6758 | { | |
6759 | gfc_symbol *sym; | |
6760 | match m; | |
6761 | ||
6762 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6763 | { | |
6764 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6765 | "part of a module"); | |
6766 | return MATCH_ERROR; | |
6767 | ||
6768 | } | |
6769 | ||
9717f7a1 | 6770 | if (gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C") |
ee7e677f TB |
6771 | == FAILURE) |
6772 | return MATCH_ERROR; | |
6773 | ||
6774 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6775 | { | |
6776 | return MATCH_ERROR; | |
6777 | } | |
6778 | ||
6779 | if (gfc_match_eos () == MATCH_YES) | |
6780 | goto syntax; | |
6781 | ||
6782 | for(;;) | |
6783 | { | |
6784 | m = gfc_match_symbol (&sym, 0); | |
6785 | switch (m) | |
6786 | { | |
6787 | case MATCH_YES: | |
636dff67 SK |
6788 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
6789 | == FAILURE) | |
ee7e677f TB |
6790 | return MATCH_ERROR; |
6791 | goto next_item; | |
6792 | ||
6793 | case MATCH_NO: | |
6794 | break; | |
6795 | ||
6796 | case MATCH_ERROR: | |
6797 | return MATCH_ERROR; | |
6798 | } | |
6799 | ||
6800 | next_item: | |
6801 | if (gfc_match_eos () == MATCH_YES) | |
6802 | break; | |
6803 | if (gfc_match_char (',') != MATCH_YES) | |
6804 | goto syntax; | |
6805 | } | |
6806 | ||
6807 | return MATCH_YES; | |
6808 | ||
6809 | syntax: | |
6810 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6811 | return MATCH_ERROR; | |
6812 | } | |
6813 | ||
6814 | ||
86bf520d | 6815 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 6816 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
6817 | type declaration or a module. */ |
6818 | ||
6819 | match | |
636dff67 | 6820 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
6821 | { |
6822 | ||
6823 | if (gfc_match ("private") != MATCH_YES) | |
6824 | return MATCH_NO; | |
6825 | ||
d51347f9 | 6826 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
6827 | && !(gfc_current_state () == COMP_DERIVED |
6828 | && gfc_state_stack->previous | |
6829 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6830 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6831 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6832 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
6833 | { |
6834 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6835 | "specification part of a module"); | |
6836 | return MATCH_ERROR; | |
6837 | } | |
6838 | ||
6de9cd9a DN |
6839 | if (gfc_current_state () == COMP_DERIVED) |
6840 | { | |
6841 | if (gfc_match_eos () == MATCH_YES) | |
6842 | { | |
6843 | *st = ST_PRIVATE; | |
6844 | return MATCH_YES; | |
6845 | } | |
6846 | ||
6847 | gfc_syntax_error (ST_PRIVATE); | |
6848 | return MATCH_ERROR; | |
6849 | } | |
6850 | ||
6851 | if (gfc_match_eos () == MATCH_YES) | |
6852 | { | |
6853 | *st = ST_PRIVATE; | |
6854 | return MATCH_YES; | |
6855 | } | |
6856 | ||
6857 | *st = ST_ATTR_DECL; | |
6858 | return access_attr_decl (ST_PRIVATE); | |
6859 | } | |
6860 | ||
6861 | ||
6862 | match | |
636dff67 | 6863 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
6864 | { |
6865 | ||
6866 | if (gfc_match ("public") != MATCH_YES) | |
6867 | return MATCH_NO; | |
6868 | ||
d51347f9 TB |
6869 | if (gfc_current_state () != COMP_MODULE) |
6870 | { | |
6871 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6872 | "specification part of a module"); | |
6873 | return MATCH_ERROR; | |
6874 | } | |
6875 | ||
6de9cd9a DN |
6876 | if (gfc_match_eos () == MATCH_YES) |
6877 | { | |
6878 | *st = ST_PUBLIC; | |
6879 | return MATCH_YES; | |
6880 | } | |
6881 | ||
6882 | *st = ST_ATTR_DECL; | |
6883 | return access_attr_decl (ST_PUBLIC); | |
6884 | } | |
6885 | ||
6886 | ||
6887 | /* Workhorse for gfc_match_parameter. */ | |
6888 | ||
6889 | static match | |
6890 | do_parm (void) | |
6891 | { | |
6892 | gfc_symbol *sym; | |
6893 | gfc_expr *init; | |
6894 | match m; | |
7919373d | 6895 | gfc_try t; |
6de9cd9a DN |
6896 | |
6897 | m = gfc_match_symbol (&sym, 0); | |
6898 | if (m == MATCH_NO) | |
6899 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6900 | ||
6901 | if (m != MATCH_YES) | |
6902 | return m; | |
6903 | ||
6904 | if (gfc_match_char ('=') == MATCH_NO) | |
6905 | { | |
6906 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6907 | return MATCH_ERROR; | |
6908 | } | |
6909 | ||
6910 | m = gfc_match_init_expr (&init); | |
6911 | if (m == MATCH_NO) | |
6912 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6913 | if (m != MATCH_YES) | |
6914 | return m; | |
6915 | ||
6916 | if (sym->ts.type == BT_UNKNOWN | |
6917 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
6918 | { | |
6919 | m = MATCH_ERROR; | |
6920 | goto cleanup; | |
6921 | } | |
6922 | ||
6923 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
231b2fcc | 6924 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
6925 | { |
6926 | m = MATCH_ERROR; | |
6927 | goto cleanup; | |
6928 | } | |
6929 | ||
1283ab12 TB |
6930 | if (sym->value) |
6931 | { | |
6932 | gfc_error ("Initializing already initialized variable at %C"); | |
6933 | m = MATCH_ERROR; | |
6934 | goto cleanup; | |
6935 | } | |
6936 | ||
7919373d TB |
6937 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
6938 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
6de9cd9a DN |
6939 | |
6940 | cleanup: | |
6941 | gfc_free_expr (init); | |
6942 | return m; | |
6943 | } | |
6944 | ||
6945 | ||
6946 | /* Match a parameter statement, with the weird syntax that these have. */ | |
6947 | ||
6948 | match | |
6949 | gfc_match_parameter (void) | |
6950 | { | |
6951 | match m; | |
6952 | ||
6953 | if (gfc_match_char ('(') == MATCH_NO) | |
6954 | return MATCH_NO; | |
6955 | ||
6956 | for (;;) | |
6957 | { | |
6958 | m = do_parm (); | |
6959 | if (m != MATCH_YES) | |
6960 | break; | |
6961 | ||
6962 | if (gfc_match (" )%t") == MATCH_YES) | |
6963 | break; | |
6964 | ||
6965 | if (gfc_match_char (',') != MATCH_YES) | |
6966 | { | |
6967 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
6968 | m = MATCH_ERROR; | |
6969 | break; | |
6970 | } | |
6971 | } | |
6972 | ||
6973 | return m; | |
6974 | } | |
6975 | ||
6976 | ||
6977 | /* Save statements have a special syntax. */ | |
6978 | ||
6979 | match | |
6980 | gfc_match_save (void) | |
6981 | { | |
9056bd70 TS |
6982 | char n[GFC_MAX_SYMBOL_LEN+1]; |
6983 | gfc_common_head *c; | |
6de9cd9a DN |
6984 | gfc_symbol *sym; |
6985 | match m; | |
6986 | ||
6987 | if (gfc_match_eos () == MATCH_YES) | |
6988 | { | |
6989 | if (gfc_current_ns->seen_save) | |
6990 | { | |
636dff67 SK |
6991 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
6992 | "follows previous SAVE statement") | |
09e87839 AL |
6993 | == FAILURE) |
6994 | return MATCH_ERROR; | |
6de9cd9a DN |
6995 | } |
6996 | ||
6997 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
6998 | return MATCH_YES; | |
6999 | } | |
7000 | ||
7001 | if (gfc_current_ns->save_all) | |
7002 | { | |
636dff67 SK |
7003 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7004 | "blanket SAVE statement") | |
09e87839 AL |
7005 | == FAILURE) |
7006 | return MATCH_ERROR; | |
6de9cd9a DN |
7007 | } |
7008 | ||
7009 | gfc_match (" ::"); | |
7010 | ||
7011 | for (;;) | |
7012 | { | |
7013 | m = gfc_match_symbol (&sym, 0); | |
7014 | switch (m) | |
7015 | { | |
7016 | case MATCH_YES: | |
80f95228 JW |
7017 | if (gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7018 | &gfc_current_locus) == FAILURE) | |
6de9cd9a DN |
7019 | return MATCH_ERROR; |
7020 | goto next_item; | |
7021 | ||
7022 | case MATCH_NO: | |
7023 | break; | |
7024 | ||
7025 | case MATCH_ERROR: | |
7026 | return MATCH_ERROR; | |
7027 | } | |
7028 | ||
9056bd70 | 7029 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7030 | if (m == MATCH_ERROR) |
7031 | return MATCH_ERROR; | |
7032 | if (m == MATCH_NO) | |
7033 | goto syntax; | |
7034 | ||
53814b8f | 7035 | c = gfc_get_common (n, 0); |
9056bd70 TS |
7036 | c->saved = 1; |
7037 | ||
6de9cd9a DN |
7038 | gfc_current_ns->seen_save = 1; |
7039 | ||
7040 | next_item: | |
7041 | if (gfc_match_eos () == MATCH_YES) | |
7042 | break; | |
7043 | if (gfc_match_char (',') != MATCH_YES) | |
7044 | goto syntax; | |
7045 | } | |
7046 | ||
7047 | return MATCH_YES; | |
7048 | ||
7049 | syntax: | |
7050 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7051 | return MATCH_ERROR; | |
7052 | } | |
7053 | ||
7054 | ||
06469efd PT |
7055 | match |
7056 | gfc_match_value (void) | |
7057 | { | |
7058 | gfc_symbol *sym; | |
7059 | match m; | |
7060 | ||
9abe5e56 DK |
7061 | /* This is not allowed within a BLOCK construct! */ |
7062 | if (gfc_current_state () == COMP_BLOCK) | |
7063 | { | |
7064 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7065 | return MATCH_ERROR; | |
7066 | } | |
7067 | ||
9717f7a1 | 7068 | if (gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C") |
06469efd PT |
7069 | == FAILURE) |
7070 | return MATCH_ERROR; | |
7071 | ||
7072 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7073 | { | |
7074 | return MATCH_ERROR; | |
7075 | } | |
7076 | ||
7077 | if (gfc_match_eos () == MATCH_YES) | |
7078 | goto syntax; | |
7079 | ||
7080 | for(;;) | |
7081 | { | |
7082 | m = gfc_match_symbol (&sym, 0); | |
7083 | switch (m) | |
7084 | { | |
7085 | case MATCH_YES: | |
636dff67 SK |
7086 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
7087 | == FAILURE) | |
06469efd PT |
7088 | return MATCH_ERROR; |
7089 | goto next_item; | |
7090 | ||
7091 | case MATCH_NO: | |
7092 | break; | |
7093 | ||
7094 | case MATCH_ERROR: | |
7095 | return MATCH_ERROR; | |
7096 | } | |
7097 | ||
7098 | next_item: | |
7099 | if (gfc_match_eos () == MATCH_YES) | |
7100 | break; | |
7101 | if (gfc_match_char (',') != MATCH_YES) | |
7102 | goto syntax; | |
7103 | } | |
7104 | ||
7105 | return MATCH_YES; | |
7106 | ||
7107 | syntax: | |
7108 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7109 | return MATCH_ERROR; | |
7110 | } | |
7111 | ||
66e4ab31 | 7112 | |
775e6c3a TB |
7113 | match |
7114 | gfc_match_volatile (void) | |
7115 | { | |
7116 | gfc_symbol *sym; | |
7117 | match m; | |
7118 | ||
9717f7a1 | 7119 | if (gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C") |
775e6c3a TB |
7120 | == FAILURE) |
7121 | return MATCH_ERROR; | |
7122 | ||
7123 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7124 | { | |
7125 | return MATCH_ERROR; | |
7126 | } | |
7127 | ||
7128 | if (gfc_match_eos () == MATCH_YES) | |
7129 | goto syntax; | |
7130 | ||
7131 | for(;;) | |
7132 | { | |
9bce3c1c | 7133 | /* VOLATILE is special because it can be added to host-associated |
be59db2d | 7134 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7135 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7136 | switch (m) |
7137 | { | |
7138 | case MATCH_YES: | |
be59db2d TB |
7139 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7140 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7141 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7142 | { | |
7143 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7144 | "%C, which is use-/host-associated", sym->name); | |
7145 | return MATCH_ERROR; | |
7146 | } | |
636dff67 SK |
7147 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
7148 | == FAILURE) | |
775e6c3a TB |
7149 | return MATCH_ERROR; |
7150 | goto next_item; | |
7151 | ||
7152 | case MATCH_NO: | |
7153 | break; | |
7154 | ||
7155 | case MATCH_ERROR: | |
7156 | return MATCH_ERROR; | |
7157 | } | |
7158 | ||
7159 | next_item: | |
7160 | if (gfc_match_eos () == MATCH_YES) | |
7161 | break; | |
7162 | if (gfc_match_char (',') != MATCH_YES) | |
7163 | goto syntax; | |
7164 | } | |
7165 | ||
7166 | return MATCH_YES; | |
7167 | ||
7168 | syntax: | |
7169 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7170 | return MATCH_ERROR; | |
7171 | } | |
7172 | ||
7173 | ||
1eee5628 TB |
7174 | match |
7175 | gfc_match_asynchronous (void) | |
7176 | { | |
7177 | gfc_symbol *sym; | |
7178 | match m; | |
7179 | ||
9717f7a1 | 7180 | if (gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C") |
1eee5628 TB |
7181 | == FAILURE) |
7182 | return MATCH_ERROR; | |
7183 | ||
7184 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7185 | { | |
7186 | return MATCH_ERROR; | |
7187 | } | |
7188 | ||
7189 | if (gfc_match_eos () == MATCH_YES) | |
7190 | goto syntax; | |
7191 | ||
7192 | for(;;) | |
7193 | { | |
7194 | /* ASYNCHRONOUS is special because it can be added to host-associated | |
7195 | symbols locally. */ | |
7196 | m = gfc_match_symbol (&sym, 1); | |
7197 | switch (m) | |
7198 | { | |
7199 | case MATCH_YES: | |
7200 | if (gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus) | |
7201 | == FAILURE) | |
7202 | return MATCH_ERROR; | |
7203 | goto next_item; | |
7204 | ||
7205 | case MATCH_NO: | |
7206 | break; | |
7207 | ||
7208 | case MATCH_ERROR: | |
7209 | return MATCH_ERROR; | |
7210 | } | |
7211 | ||
7212 | next_item: | |
7213 | if (gfc_match_eos () == MATCH_YES) | |
7214 | break; | |
7215 | if (gfc_match_char (',') != MATCH_YES) | |
7216 | goto syntax; | |
7217 | } | |
7218 | ||
7219 | return MATCH_YES; | |
7220 | ||
7221 | syntax: | |
7222 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7223 | return MATCH_ERROR; | |
7224 | } | |
7225 | ||
7226 | ||
6de9cd9a DN |
7227 | /* Match a module procedure statement. Note that we have to modify |
7228 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7229 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7230 | |
7231 | match | |
7232 | gfc_match_modproc (void) | |
7233 | { | |
7234 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7235 | gfc_symbol *sym; | |
7236 | match m; | |
162b5a21 | 7237 | locus old_locus; |
060fca4a | 7238 | gfc_namespace *module_ns; |
2b77e908 | 7239 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7240 | |
7241 | if (gfc_state_stack->state != COMP_INTERFACE | |
7242 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7243 | || current_interface.type == INTERFACE_NAMELESS |
7244 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7245 | { |
636dff67 SK |
7246 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7247 | "interface"); | |
6de9cd9a DN |
7248 | return MATCH_ERROR; |
7249 | } | |
7250 | ||
060fca4a PT |
7251 | module_ns = gfc_current_ns->parent; |
7252 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7253 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7254 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7255 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7256 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7257 | break; |
7258 | ||
7259 | if (module_ns == NULL) | |
7260 | return MATCH_ERROR; | |
7261 | ||
2b77e908 FXC |
7262 | /* Store the current state of the interface. We will need it if we |
7263 | end up with a syntax error and need to recover. */ | |
7264 | old_interface_head = gfc_current_interface_head (); | |
7265 | ||
162b5a21 SK |
7266 | /* Check if the F2008 optional double colon appears. */ |
7267 | gfc_gobble_whitespace (); | |
7268 | old_locus = gfc_current_locus; | |
7269 | if (gfc_match ("::") == MATCH_YES) | |
7270 | { | |
9717f7a1 | 7271 | if (gfc_notify_std (GFC_STD_F2008, "double colon in " |
162b5a21 SK |
7272 | "MODULE PROCEDURE statement at %L", &old_locus) |
7273 | == FAILURE) | |
7274 | return MATCH_ERROR; | |
7275 | } | |
7276 | else | |
7277 | gfc_current_locus = old_locus; | |
7278 | ||
6de9cd9a DN |
7279 | for (;;) |
7280 | { | |
2b77e908 | 7281 | bool last = false; |
162b5a21 | 7282 | old_locus = gfc_current_locus; |
2b77e908 | 7283 | |
6de9cd9a DN |
7284 | m = gfc_match_name (name); |
7285 | if (m == MATCH_NO) | |
7286 | goto syntax; | |
7287 | if (m != MATCH_YES) | |
7288 | return MATCH_ERROR; | |
7289 | ||
2b77e908 FXC |
7290 | /* Check for syntax error before starting to add symbols to the |
7291 | current namespace. */ | |
7292 | if (gfc_match_eos () == MATCH_YES) | |
7293 | last = true; | |
162b5a21 | 7294 | |
2b77e908 FXC |
7295 | if (!last && gfc_match_char (',') != MATCH_YES) |
7296 | goto syntax; | |
7297 | ||
7298 | /* Now we're sure the syntax is valid, we process this item | |
7299 | further. */ | |
060fca4a | 7300 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7301 | return MATCH_ERROR; |
7302 | ||
43dfd40c SK |
7303 | if (sym->attr.intrinsic) |
7304 | { | |
7305 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7306 | "PROCEDURE", &old_locus); | |
7307 | return MATCH_ERROR; | |
7308 | } | |
7309 | ||
6de9cd9a | 7310 | if (sym->attr.proc != PROC_MODULE |
231b2fcc TS |
7311 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
7312 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
7313 | return MATCH_ERROR; |
7314 | ||
7315 | if (gfc_add_interface (sym) == FAILURE) | |
7316 | return MATCH_ERROR; | |
7317 | ||
71f77fd7 | 7318 | sym->attr.mod_proc = 1; |
43dfd40c | 7319 | sym->declared_at = old_locus; |
71f77fd7 | 7320 | |
2b77e908 | 7321 | if (last) |
6de9cd9a | 7322 | break; |
6de9cd9a DN |
7323 | } |
7324 | ||
7325 | return MATCH_YES; | |
7326 | ||
7327 | syntax: | |
2b77e908 FXC |
7328 | /* Restore the previous state of the interface. */ |
7329 | interface = gfc_current_interface_head (); | |
7330 | gfc_set_current_interface_head (old_interface_head); | |
7331 | ||
7332 | /* Free the new interfaces. */ | |
7333 | while (interface != old_interface_head) | |
7334 | { | |
7335 | gfc_interface *i = interface->next; | |
cede9502 | 7336 | free (interface); |
2b77e908 FXC |
7337 | interface = i; |
7338 | } | |
7339 | ||
7340 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7341 | gfc_syntax_error (ST_MODULE_PROC); |
7342 | return MATCH_ERROR; | |
7343 | } | |
7344 | ||
7345 | ||
7d1f1e61 PT |
7346 | /* Check a derived type that is being extended. */ |
7347 | static gfc_symbol* | |
7348 | check_extended_derived_type (char *name) | |
7349 | { | |
7350 | gfc_symbol *extended; | |
7351 | ||
7352 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7353 | { | |
7354 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7355 | return NULL; | |
7356 | } | |
7357 | ||
7358 | if (!extended) | |
7359 | { | |
7360 | gfc_error ("No such symbol in TYPE definition at %C"); | |
7361 | return NULL; | |
7362 | } | |
7363 | ||
c3f34952 TB |
7364 | extended = gfc_find_dt_in_generic (extended); |
7365 | ||
7d1f1e61 PT |
7366 | if (extended->attr.flavor != FL_DERIVED) |
7367 | { | |
7368 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7369 | "derived type", name); | |
7370 | return NULL; | |
7371 | } | |
7372 | ||
7373 | if (extended->attr.is_bind_c) | |
7374 | { | |
7375 | gfc_error ("'%s' cannot be extended at %C because it " | |
7376 | "is BIND(C)", extended->name); | |
7377 | return NULL; | |
7378 | } | |
7379 | ||
7380 | if (extended->attr.sequence) | |
7381 | { | |
7382 | gfc_error ("'%s' cannot be extended at %C because it " | |
7383 | "is a SEQUENCE type", extended->name); | |
7384 | return NULL; | |
7385 | } | |
7386 | ||
7387 | return extended; | |
7388 | } | |
7389 | ||
7390 | ||
a8b3b0b6 CR |
7391 | /* Match the optional attribute specifiers for a type declaration. |
7392 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7393 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7394 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7395 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7396 | |
7397 | match | |
7d1f1e61 | 7398 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7399 | { |
a8b3b0b6 | 7400 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7401 | if (gfc_match (" , private") == MATCH_YES) |
7402 | { | |
d51347f9 | 7403 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7404 | { |
d51347f9 TB |
7405 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7406 | "specification part of a module"); | |
6de9cd9a DN |
7407 | return MATCH_ERROR; |
7408 | } | |
7409 | ||
a8b3b0b6 | 7410 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
6de9cd9a | 7411 | return MATCH_ERROR; |
6de9cd9a | 7412 | } |
a8b3b0b6 | 7413 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7414 | { |
d51347f9 | 7415 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7416 | { |
d51347f9 TB |
7417 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7418 | "specification part of a module"); | |
6de9cd9a DN |
7419 | return MATCH_ERROR; |
7420 | } | |
7421 | ||
a8b3b0b6 | 7422 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
6de9cd9a | 7423 | return MATCH_ERROR; |
6de9cd9a | 7424 | } |
52f49934 | 7425 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7426 | { |
7427 | /* If the type is defined to be bind(c) it then needs to make | |
7428 | sure that all fields are interoperable. This will | |
7429 | need to be a semantic check on the finished derived type. | |
7430 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
7431 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
7432 | return MATCH_ERROR; | |
7433 | ||
7434 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7435 | } | |
52f49934 DK |
7436 | else if (gfc_match (" , abstract") == MATCH_YES) |
7437 | { | |
9717f7a1 | 7438 | if (gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C") |
52f49934 DK |
7439 | == FAILURE) |
7440 | return MATCH_ERROR; | |
7441 | ||
7442 | if (gfc_add_abstract (attr, &gfc_current_locus) == FAILURE) | |
7443 | return MATCH_ERROR; | |
7444 | } | |
7d1f1e61 PT |
7445 | else if (name && gfc_match(" , extends ( %n )", name) == MATCH_YES) |
7446 | { | |
63a3341a | 7447 | if (gfc_add_extension (attr, &gfc_current_locus) == FAILURE) |
7d1f1e61 PT |
7448 | return MATCH_ERROR; |
7449 | } | |
a8b3b0b6 CR |
7450 | else |
7451 | return MATCH_NO; | |
7452 | ||
7453 | /* If we get here, something matched. */ | |
7454 | return MATCH_YES; | |
7455 | } | |
7456 | ||
7457 | ||
7458 | /* Match the beginning of a derived type declaration. If a type name | |
7459 | was the result of a function, then it is possible to have a symbol | |
7460 | already to be known as a derived type yet have no components. */ | |
7461 | ||
7462 | match | |
7463 | gfc_match_derived_decl (void) | |
7464 | { | |
7465 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7466 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7467 | symbol_attribute attr; |
c3f34952 | 7468 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7469 | gfc_symbol *extended; |
a8b3b0b6 CR |
7470 | match m; |
7471 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7472 | bool seen_attr = false; |
c3f34952 | 7473 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7474 | |
7475 | if (gfc_current_state () == COMP_DERIVED) | |
7476 | return MATCH_NO; | |
7477 | ||
7d1f1e61 PT |
7478 | name[0] = '\0'; |
7479 | parent[0] = '\0'; | |
a8b3b0b6 | 7480 | gfc_clear_attr (&attr); |
7d1f1e61 | 7481 | extended = NULL; |
a8b3b0b6 CR |
7482 | |
7483 | do | |
7484 | { | |
7d1f1e61 | 7485 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7486 | if (is_type_attr_spec == MATCH_ERROR) |
7487 | return MATCH_ERROR; | |
e7303e85 FXC |
7488 | if (is_type_attr_spec == MATCH_YES) |
7489 | seen_attr = true; | |
a8b3b0b6 | 7490 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7491 | |
63a3341a PT |
7492 | /* Deal with derived type extensions. The extension attribute has |
7493 | been added to 'attr' but now the parent type must be found and | |
7494 | checked. */ | |
7d1f1e61 PT |
7495 | if (parent[0]) |
7496 | extended = check_extended_derived_type (parent); | |
7497 | ||
7498 | if (parent[0] && !extended) | |
7499 | return MATCH_ERROR; | |
7500 | ||
e7303e85 | 7501 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7502 | { |
7503 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7504 | return MATCH_ERROR; | |
7505 | } | |
7506 | ||
7507 | m = gfc_match (" %n%t", name); | |
7508 | if (m != MATCH_YES) | |
7509 | return m; | |
7510 | ||
e9c06563 TB |
7511 | /* Make sure the name is not the name of an intrinsic type. */ |
7512 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7513 | { |
636dff67 SK |
7514 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7515 | "type", name); | |
6de9cd9a DN |
7516 | return MATCH_ERROR; |
7517 | } | |
7518 | ||
c3f34952 | 7519 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
7520 | return MATCH_ERROR; |
7521 | ||
c3f34952 | 7522 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a DN |
7523 | { |
7524 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c3f34952 TB |
7525 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7526 | return MATCH_ERROR; | |
7527 | } | |
7528 | ||
7529 | if (!gensym->attr.generic | |
7530 | && gfc_add_generic (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7531 | return MATCH_ERROR; | |
7532 | ||
7533 | if (!gensym->attr.function | |
7534 | && gfc_add_function (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7535 | return MATCH_ERROR; | |
7536 | ||
7537 | sym = gfc_find_dt_in_generic (gensym); | |
7538 | ||
7539 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7540 | { | |
7541 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7542 | "defined", sym->name); | |
6de9cd9a DN |
7543 | return MATCH_ERROR; |
7544 | } | |
7545 | ||
c3f34952 TB |
7546 | if (!sym) |
7547 | { | |
7548 | /* Use upper case to save the actual derived-type symbol. */ | |
7549 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7550 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7551 | &gensym->name[1]), NULL, &sym); | |
7552 | sym->name = gfc_get_string (gensym->name); | |
7553 | head = gensym->generic; | |
7554 | intr = gfc_get_interface (); | |
7555 | intr->sym = sym; | |
7556 | intr->where = gfc_current_locus; | |
7557 | intr->sym->declared_at = gfc_current_locus; | |
7558 | intr->next = head; | |
7559 | gensym->generic = intr; | |
7560 | gensym->attr.if_source = IFSRC_DECL; | |
7561 | } | |
7562 | ||
6de9cd9a DN |
7563 | /* The symbol may already have the derived attribute without the |
7564 | components. The ways this can happen is via a function | |
7565 | definition, an INTRINSIC statement or a subtype in another | |
7566 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 7567 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 7568 | if (sym->attr.flavor != FL_DERIVED |
231b2fcc | 7569 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
7570 | return MATCH_ERROR; |
7571 | ||
6de9cd9a | 7572 | if (attr.access != ACCESS_UNKNOWN |
231b2fcc | 7573 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
6de9cd9a | 7574 | return MATCH_ERROR; |
c3f34952 TB |
7575 | else if (sym->attr.access == ACCESS_UNKNOWN |
7576 | && gensym->attr.access != ACCESS_UNKNOWN | |
7577 | && gfc_add_access (&sym->attr, gensym->attr.access, sym->name, NULL) | |
7578 | == FAILURE) | |
7579 | return MATCH_ERROR; | |
7580 | ||
7581 | if (sym->attr.access != ACCESS_UNKNOWN | |
7582 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7583 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 7584 | |
a8b3b0b6 CR |
7585 | /* See if the derived type was labeled as bind(c). */ |
7586 | if (attr.is_bind_c != 0) | |
7587 | sym->attr.is_bind_c = attr.is_bind_c; | |
7588 | ||
34523524 DK |
7589 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7590 | if (!sym->f2k_derived) | |
7591 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
7592 | |
7593 | if (extended && !sym->components) | |
7594 | { | |
7595 | gfc_component *p; | |
7596 | gfc_symtree *st; | |
7597 | ||
7598 | /* Add the extended derived type as the first component. */ | |
7599 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
7600 | extended->refs++; |
7601 | gfc_set_sym_referenced (extended); | |
7602 | ||
7603 | p->ts.type = BT_DERIVED; | |
bc21d315 | 7604 | p->ts.u.derived = extended; |
7d1f1e61 | 7605 | p->initializer = gfc_default_initializer (&p->ts); |
7c1dab0d JW |
7606 | |
7607 | /* Set extension level. */ | |
7608 | if (extended->attr.extension == 255) | |
7609 | { | |
7610 | /* Since the extension field is 8 bit wide, we can only have | |
7611 | up to 255 extension levels. */ | |
7612 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7613 | extended->name, &extended->declared_at); | |
7614 | return MATCH_ERROR; | |
7615 | } | |
7616 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
7617 | |
7618 | /* Provide the links between the extended type and its extension. */ | |
7619 | if (!extended->f2k_derived) | |
7620 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7621 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7622 | st->n.sym = sym; | |
7623 | } | |
7624 | ||
7c1dab0d JW |
7625 | if (!sym->hash_value) |
7626 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 7627 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 7628 | |
52f49934 DK |
7629 | /* Take over the ABSTRACT attribute. */ |
7630 | sym->attr.abstract = attr.abstract; | |
7631 | ||
6de9cd9a DN |
7632 | gfc_new_block = sym; |
7633 | ||
7634 | return MATCH_YES; | |
7635 | } | |
83d890b9 AL |
7636 | |
7637 | ||
7638 | /* Cray Pointees can be declared as: | |
b3aefde2 | 7639 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 7640 | |
32e8bb8e | 7641 | match |
83d890b9 AL |
7642 | gfc_mod_pointee_as (gfc_array_spec *as) |
7643 | { | |
7644 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7645 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 7646 | as->cp_was_assumed = true; |
83d890b9 AL |
7647 | else if (as->type == AS_ASSUMED_SHAPE) |
7648 | { | |
7649 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7650 | return MATCH_ERROR; | |
7651 | } | |
7652 | return MATCH_YES; | |
7653 | } | |
25d8f0a2 TS |
7654 | |
7655 | ||
7656 | /* Match the enum definition statement, here we are trying to match | |
7657 | the first line of enum definition statement. | |
7658 | Returns MATCH_YES if match is found. */ | |
7659 | ||
7660 | match | |
7661 | gfc_match_enum (void) | |
7662 | { | |
7663 | match m; | |
7664 | ||
7665 | m = gfc_match_eos (); | |
7666 | if (m != MATCH_YES) | |
7667 | return m; | |
7668 | ||
9717f7a1 | 7669 | if (gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C") |
25d8f0a2 TS |
7670 | == FAILURE) |
7671 | return MATCH_ERROR; | |
7672 | ||
7673 | return MATCH_YES; | |
7674 | } | |
7675 | ||
7676 | ||
31224396 SK |
7677 | /* Returns an initializer whose value is one higher than the value of the |
7678 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7679 | initializers value will be set to zero. The initializer's kind | |
7680 | will be set to gfc_c_int_kind. | |
7681 | ||
7682 | If -fshort-enums is given, the appropriate kind will be selected | |
7683 | later after all enumerators have been parsed. A warning is issued | |
7684 | here if an initializer exceeds gfc_c_int_kind. */ | |
7685 | ||
7686 | static gfc_expr * | |
7687 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7688 | { | |
7689 | gfc_expr *result; | |
b7e75771 | 7690 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
7691 | |
7692 | mpz_init (result->value.integer); | |
7693 | ||
7694 | if (last_initializer != NULL) | |
7695 | { | |
7696 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7697 | result->where = last_initializer->where; | |
7698 | ||
7699 | if (gfc_check_integer_range (result->value.integer, | |
7700 | gfc_c_int_kind) != ARITH_OK) | |
7701 | { | |
7702 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7703 | return NULL; | |
7704 | } | |
7705 | } | |
7706 | else | |
7707 | { | |
7708 | /* Control comes here, if it's the very first enumerator and no | |
7709 | initializer has been given. It will be initialized to zero. */ | |
7710 | mpz_set_si (result->value.integer, 0); | |
7711 | } | |
7712 | ||
7713 | return result; | |
7714 | } | |
7715 | ||
7716 | ||
6133c68a TS |
7717 | /* Match a variable name with an optional initializer. When this |
7718 | subroutine is called, a variable is expected to be parsed next. | |
7719 | Depending on what is happening at the moment, updates either the | |
7720 | symbol table or the current interface. */ | |
7721 | ||
7722 | static match | |
7723 | enumerator_decl (void) | |
7724 | { | |
7725 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7726 | gfc_expr *initializer; | |
7727 | gfc_array_spec *as = NULL; | |
7728 | gfc_symbol *sym; | |
7729 | locus var_locus; | |
7730 | match m; | |
17b1d2a0 | 7731 | gfc_try t; |
6133c68a TS |
7732 | locus old_locus; |
7733 | ||
7734 | initializer = NULL; | |
7735 | old_locus = gfc_current_locus; | |
7736 | ||
7737 | /* When we get here, we've just matched a list of attributes and | |
7738 | maybe a type and a double colon. The next thing we expect to see | |
7739 | is the name of the symbol. */ | |
7740 | m = gfc_match_name (name); | |
7741 | if (m != MATCH_YES) | |
7742 | goto cleanup; | |
7743 | ||
7744 | var_locus = gfc_current_locus; | |
7745 | ||
7746 | /* OK, we've successfully matched the declaration. Now put the | |
7747 | symbol in the current namespace. If we fail to create the symbol, | |
7748 | bail out. */ | |
e69afb29 | 7749 | if (build_sym (name, NULL, false, &as, &var_locus) == FAILURE) |
6133c68a TS |
7750 | { |
7751 | m = MATCH_ERROR; | |
7752 | goto cleanup; | |
7753 | } | |
7754 | ||
7755 | /* The double colon must be present in order to have initializers. | |
7756 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7757 | if (colon_seen) | |
7758 | { | |
7759 | if (gfc_match_char ('=') == MATCH_YES) | |
7760 | { | |
7761 | m = gfc_match_init_expr (&initializer); | |
7762 | if (m == MATCH_NO) | |
7763 | { | |
7764 | gfc_error ("Expected an initialization expression at %C"); | |
7765 | m = MATCH_ERROR; | |
7766 | } | |
7767 | ||
7768 | if (m != MATCH_YES) | |
7769 | goto cleanup; | |
7770 | } | |
7771 | } | |
7772 | ||
7773 | /* If we do not have an initializer, the initialization value of the | |
7774 | previous enumerator (stored in last_initializer) is incremented | |
7775 | by 1 and is used to initialize the current enumerator. */ | |
7776 | if (initializer == NULL) | |
31224396 | 7777 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 7778 | |
6133c68a TS |
7779 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7780 | { | |
01e64c3d JJ |
7781 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7782 | &var_locus); | |
d51347f9 | 7783 | m = MATCH_ERROR; |
6133c68a TS |
7784 | goto cleanup; |
7785 | } | |
7786 | ||
7787 | /* Store this current initializer, for the next enumerator variable | |
7788 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7789 | use last_initializer below. */ | |
7790 | last_initializer = initializer; | |
7791 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7792 | ||
7793 | /* Maintain enumerator history. */ | |
7794 | gfc_find_symbol (name, NULL, 0, &sym); | |
7795 | create_enum_history (sym, last_initializer); | |
7796 | ||
7797 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
7798 | ||
7799 | cleanup: | |
7800 | /* Free stuff up and return. */ | |
7801 | gfc_free_expr (initializer); | |
7802 | ||
7803 | return m; | |
7804 | } | |
7805 | ||
7806 | ||
66e4ab31 | 7807 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
7808 | |
7809 | match | |
7810 | gfc_match_enumerator_def (void) | |
7811 | { | |
7812 | match m; | |
17b1d2a0 | 7813 | gfc_try t; |
d51347f9 | 7814 | |
25d8f0a2 | 7815 | gfc_clear_ts (¤t_ts); |
d51347f9 | 7816 | |
25d8f0a2 TS |
7817 | m = gfc_match (" enumerator"); |
7818 | if (m != MATCH_YES) | |
7819 | return m; | |
6133c68a TS |
7820 | |
7821 | m = gfc_match (" :: "); | |
7822 | if (m == MATCH_ERROR) | |
7823 | return m; | |
7824 | ||
7825 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 7826 | |
25d8f0a2 TS |
7827 | if (gfc_current_state () != COMP_ENUM) |
7828 | { | |
7829 | gfc_error ("ENUM definition statement expected before %C"); | |
7830 | gfc_free_enum_history (); | |
7831 | return MATCH_ERROR; | |
7832 | } | |
7833 | ||
7834 | (¤t_ts)->type = BT_INTEGER; | |
7835 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 7836 | |
6133c68a TS |
7837 | gfc_clear_attr (¤t_attr); |
7838 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
7839 | if (t == FAILURE) | |
25d8f0a2 | 7840 | { |
6133c68a | 7841 | m = MATCH_ERROR; |
25d8f0a2 TS |
7842 | goto cleanup; |
7843 | } | |
7844 | ||
25d8f0a2 TS |
7845 | for (;;) |
7846 | { | |
6133c68a | 7847 | m = enumerator_decl (); |
25d8f0a2 | 7848 | if (m == MATCH_ERROR) |
01e64c3d JJ |
7849 | { |
7850 | gfc_free_enum_history (); | |
7851 | goto cleanup; | |
7852 | } | |
25d8f0a2 TS |
7853 | if (m == MATCH_NO) |
7854 | break; | |
7855 | ||
7856 | if (gfc_match_eos () == MATCH_YES) | |
7857 | goto cleanup; | |
7858 | if (gfc_match_char (',') != MATCH_YES) | |
7859 | break; | |
7860 | } | |
7861 | ||
7862 | if (gfc_current_state () == COMP_ENUM) | |
7863 | { | |
7864 | gfc_free_enum_history (); | |
7865 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7866 | m = MATCH_ERROR; | |
7867 | } | |
7868 | ||
7869 | cleanup: | |
7870 | gfc_free_array_spec (current_as); | |
7871 | current_as = NULL; | |
7872 | return m; | |
7873 | ||
7874 | } | |
7875 | ||
f6fad28e | 7876 | |
30b608eb DK |
7877 | /* Match binding attributes. */ |
7878 | ||
7879 | static match | |
713485cc | 7880 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
7881 | { |
7882 | bool found_passing = false; | |
713485cc | 7883 | bool seen_ptr = false; |
90661f26 | 7884 | match m = MATCH_YES; |
30b608eb | 7885 | |
eea58adb | 7886 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
7887 | this case the defaults are in there. */ |
7888 | ba->access = ACCESS_UNKNOWN; | |
7889 | ba->pass_arg = NULL; | |
7890 | ba->pass_arg_num = 0; | |
7891 | ba->nopass = 0; | |
7892 | ba->non_overridable = 0; | |
b0e5fa94 | 7893 | ba->deferred = 0; |
90661f26 | 7894 | ba->ppc = ppc; |
30b608eb DK |
7895 | |
7896 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
7897 | m = gfc_match_char (','); |
7898 | if (m == MATCH_NO) | |
7899 | goto done; | |
30b608eb DK |
7900 | |
7901 | do | |
7902 | { | |
e157f736 DK |
7903 | /* Access specifier. */ |
7904 | ||
7905 | m = gfc_match (" public"); | |
30b608eb DK |
7906 | if (m == MATCH_ERROR) |
7907 | goto error; | |
7908 | if (m == MATCH_YES) | |
7909 | { | |
e157f736 | 7910 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7911 | { |
e157f736 | 7912 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7913 | goto error; |
7914 | } | |
7915 | ||
e157f736 | 7916 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
7917 | continue; |
7918 | } | |
7919 | ||
e157f736 | 7920 | m = gfc_match (" private"); |
30b608eb DK |
7921 | if (m == MATCH_ERROR) |
7922 | goto error; | |
7923 | if (m == MATCH_YES) | |
7924 | { | |
e157f736 | 7925 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 7926 | { |
e157f736 | 7927 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
7928 | goto error; |
7929 | } | |
7930 | ||
e157f736 | 7931 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
7932 | continue; |
7933 | } | |
7934 | ||
e157f736 DK |
7935 | /* If inside GENERIC, the following is not allowed. */ |
7936 | if (!generic) | |
30b608eb | 7937 | { |
30b608eb | 7938 | |
e157f736 DK |
7939 | /* NOPASS flag. */ |
7940 | m = gfc_match (" nopass"); | |
7941 | if (m == MATCH_ERROR) | |
7942 | goto error; | |
7943 | if (m == MATCH_YES) | |
30b608eb | 7944 | { |
e157f736 DK |
7945 | if (found_passing) |
7946 | { | |
7947 | gfc_error ("Binding attributes already specify passing," | |
7948 | " illegal NOPASS at %C"); | |
7949 | goto error; | |
7950 | } | |
7951 | ||
7952 | found_passing = true; | |
7953 | ba->nopass = 1; | |
7954 | continue; | |
30b608eb DK |
7955 | } |
7956 | ||
e157f736 DK |
7957 | /* PASS possibly including argument. */ |
7958 | m = gfc_match (" pass"); | |
7959 | if (m == MATCH_ERROR) | |
7960 | goto error; | |
7961 | if (m == MATCH_YES) | |
30b608eb | 7962 | { |
e157f736 DK |
7963 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
7964 | ||
7965 | if (found_passing) | |
7966 | { | |
7967 | gfc_error ("Binding attributes already specify passing," | |
7968 | " illegal PASS at %C"); | |
7969 | goto error; | |
7970 | } | |
7971 | ||
7972 | m = gfc_match (" ( %n )", arg); | |
7973 | if (m == MATCH_ERROR) | |
7974 | goto error; | |
7975 | if (m == MATCH_YES) | |
90661f26 | 7976 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
7977 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
7978 | ||
7979 | found_passing = true; | |
7980 | ba->nopass = 0; | |
7981 | continue; | |
30b608eb DK |
7982 | } |
7983 | ||
713485cc JW |
7984 | if (ppc) |
7985 | { | |
7986 | /* POINTER flag. */ | |
7987 | m = gfc_match (" pointer"); | |
7988 | if (m == MATCH_ERROR) | |
7989 | goto error; | |
7990 | if (m == MATCH_YES) | |
7991 | { | |
7992 | if (seen_ptr) | |
7993 | { | |
7994 | gfc_error ("Duplicate POINTER attribute at %C"); | |
7995 | goto error; | |
7996 | } | |
7997 | ||
7998 | seen_ptr = true; | |
713485cc JW |
7999 | continue; |
8000 | } | |
8001 | } | |
8002 | else | |
8003 | { | |
8004 | /* NON_OVERRIDABLE flag. */ | |
8005 | m = gfc_match (" non_overridable"); | |
8006 | if (m == MATCH_ERROR) | |
8007 | goto error; | |
8008 | if (m == MATCH_YES) | |
8009 | { | |
8010 | if (ba->non_overridable) | |
8011 | { | |
8012 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8013 | goto error; | |
8014 | } | |
8015 | ||
8016 | ba->non_overridable = 1; | |
8017 | continue; | |
8018 | } | |
8019 | ||
8020 | /* DEFERRED flag. */ | |
8021 | m = gfc_match (" deferred"); | |
8022 | if (m == MATCH_ERROR) | |
8023 | goto error; | |
8024 | if (m == MATCH_YES) | |
8025 | { | |
8026 | if (ba->deferred) | |
8027 | { | |
8028 | gfc_error ("Duplicate DEFERRED at %C"); | |
8029 | goto error; | |
8030 | } | |
8031 | ||
8032 | ba->deferred = 1; | |
8033 | continue; | |
8034 | } | |
8035 | } | |
8036 | ||
30b608eb DK |
8037 | } |
8038 | ||
8039 | /* Nothing matching found. */ | |
e157f736 DK |
8040 | if (generic) |
8041 | gfc_error ("Expected access-specifier at %C"); | |
8042 | else | |
8043 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
8044 | goto error; |
8045 | } | |
8046 | while (gfc_match_char (',') == MATCH_YES); | |
8047 | ||
b0e5fa94 DK |
8048 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8049 | if (ba->non_overridable && ba->deferred) | |
8050 | { | |
8051 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8052 | goto error; | |
8053 | } | |
8054 | ||
90661f26 JW |
8055 | m = MATCH_YES; |
8056 | ||
8057 | done: | |
e157f736 DK |
8058 | if (ba->access == ACCESS_UNKNOWN) |
8059 | ba->access = gfc_typebound_default_access; | |
8060 | ||
713485cc JW |
8061 | if (ppc && !seen_ptr) |
8062 | { | |
8063 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8064 | " at %C"); | |
8065 | goto error; | |
8066 | } | |
8067 | ||
90661f26 | 8068 | return m; |
30b608eb DK |
8069 | |
8070 | error: | |
30b608eb DK |
8071 | return MATCH_ERROR; |
8072 | } | |
8073 | ||
8074 | ||
8075 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8076 | ||
8077 | static match | |
8078 | match_procedure_in_type (void) | |
8079 | { | |
8080 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8081 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 8082 | char* target = NULL, *ifc = NULL; |
3e15518b | 8083 | gfc_typebound_proc tb; |
30b608eb DK |
8084 | bool seen_colons; |
8085 | bool seen_attrs; | |
8086 | match m; | |
8087 | gfc_symtree* stree; | |
8088 | gfc_namespace* ns; | |
8089 | gfc_symbol* block; | |
1be17993 | 8090 | int num; |
30b608eb DK |
8091 | |
8092 | /* Check current state. */ | |
8093 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8094 | block = gfc_state_stack->previous->sym; | |
8095 | gcc_assert (block); | |
8096 | ||
b0e5fa94 | 8097 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
8098 | if (gfc_match (" (") == MATCH_YES) |
8099 | { | |
b0e5fa94 DK |
8100 | m = gfc_match_name (target_buf); |
8101 | if (m == MATCH_ERROR) | |
8102 | return m; | |
8103 | if (m != MATCH_YES) | |
8104 | { | |
8105 | gfc_error ("Interface-name expected after '(' at %C"); | |
8106 | return MATCH_ERROR; | |
8107 | } | |
8108 | ||
8109 | if (gfc_match (" )") != MATCH_YES) | |
8110 | { | |
8111 | gfc_error ("')' expected at %C"); | |
8112 | return MATCH_ERROR; | |
8113 | } | |
8114 | ||
1be17993 | 8115 | ifc = target_buf; |
30b608eb DK |
8116 | } |
8117 | ||
8118 | /* Construct the data structure. */ | |
ff5b6492 | 8119 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8120 | tb.where = gfc_current_locus; |
30b608eb DK |
8121 | |
8122 | /* Match binding attributes. */ | |
3e15518b | 8123 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8124 | if (m == MATCH_ERROR) |
8125 | return m; | |
8126 | seen_attrs = (m == MATCH_YES); | |
8127 | ||
1be17993 | 8128 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8129 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8130 | { |
8131 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8132 | return MATCH_ERROR; | |
8133 | } | |
3e15518b | 8134 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8135 | { |
8136 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8137 | return MATCH_ERROR; | |
8138 | } | |
8139 | ||
30b608eb DK |
8140 | /* Match the colons. */ |
8141 | m = gfc_match (" ::"); | |
8142 | if (m == MATCH_ERROR) | |
8143 | return m; | |
8144 | seen_colons = (m == MATCH_YES); | |
8145 | if (seen_attrs && !seen_colons) | |
8146 | { | |
8147 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8148 | return MATCH_ERROR; | |
8149 | } | |
8150 | ||
1be17993 JW |
8151 | /* Match the binding names. */ |
8152 | for(num=1;;num++) | |
30b608eb | 8153 | { |
1be17993 JW |
8154 | m = gfc_match_name (name); |
8155 | if (m == MATCH_ERROR) | |
8156 | return m; | |
8157 | if (m == MATCH_NO) | |
b0e5fa94 | 8158 | { |
1be17993 | 8159 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8160 | return MATCH_ERROR; |
8161 | } | |
8162 | ||
9717f7a1 | 8163 | if (num>1 && gfc_notify_std (GFC_STD_F2008, "PROCEDURE list" |
1be17993 JW |
8164 | " at %C") == FAILURE) |
8165 | return MATCH_ERROR; | |
30b608eb | 8166 | |
1be17993 JW |
8167 | /* Try to match the '=> target', if it's there. */ |
8168 | target = ifc; | |
8169 | m = gfc_match (" =>"); | |
30b608eb DK |
8170 | if (m == MATCH_ERROR) |
8171 | return m; | |
1be17993 | 8172 | if (m == MATCH_YES) |
30b608eb | 8173 | { |
3e15518b | 8174 | if (tb.deferred) |
1be17993 JW |
8175 | { |
8176 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8177 | return MATCH_ERROR; | |
8178 | } | |
8179 | ||
8180 | if (!seen_colons) | |
8181 | { | |
8182 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8183 | " at %C"); | |
8184 | return MATCH_ERROR; | |
8185 | } | |
8186 | ||
8187 | m = gfc_match_name (target_buf); | |
8188 | if (m == MATCH_ERROR) | |
8189 | return m; | |
8190 | if (m == MATCH_NO) | |
8191 | { | |
8192 | gfc_error ("Expected binding target after '=>' at %C"); | |
8193 | return MATCH_ERROR; | |
8194 | } | |
8195 | target = target_buf; | |
30b608eb | 8196 | } |
30b608eb | 8197 | |
1be17993 JW |
8198 | /* If no target was found, it has the same name as the binding. */ |
8199 | if (!target) | |
8200 | target = name; | |
30b608eb | 8201 | |
1be17993 JW |
8202 | /* Get the namespace to insert the symbols into. */ |
8203 | ns = block->f2k_derived; | |
8204 | gcc_assert (ns); | |
30b608eb | 8205 | |
1be17993 | 8206 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8207 | if (tb.deferred && !block->attr.abstract) |
1be17993 JW |
8208 | { |
8209 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8210 | "is not ABSTRACT", block->name); | |
8211 | return MATCH_ERROR; | |
8212 | } | |
30b608eb | 8213 | |
1be17993 JW |
8214 | /* See if we already have a binding with this name in the symtree which |
8215 | would be an error. If a GENERIC already targetted this binding, it may | |
8216 | be already there but then typebound is still NULL. */ | |
8217 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8218 | if (stree && stree->n.tb) |
1be17993 JW |
8219 | { |
8220 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8221 | "the derived type '%s' at %C", name, block->name); | |
8222 | return MATCH_ERROR; | |
8223 | } | |
b0e5fa94 | 8224 | |
1be17993 | 8225 | /* Insert it and set attributes. */ |
30b608eb | 8226 | |
9f23af48 MM |
8227 | if (!stree) |
8228 | { | |
8229 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8230 | gcc_assert (stree); | |
8231 | } | |
3e15518b | 8232 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8233 | |
3e15518b JW |
8234 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8235 | false)) | |
1be17993 | 8236 | return MATCH_ERROR; |
3e15518b | 8237 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1be17993 JW |
8238 | |
8239 | if (gfc_match_eos () == MATCH_YES) | |
8240 | return MATCH_YES; | |
8241 | if (gfc_match_char (',') != MATCH_YES) | |
8242 | goto syntax; | |
e34ccb4c | 8243 | } |
30b608eb | 8244 | |
1be17993 JW |
8245 | syntax: |
8246 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8247 | return MATCH_ERROR; | |
30b608eb DK |
8248 | } |
8249 | ||
8250 | ||
e157f736 DK |
8251 | /* Match a GENERIC procedure binding inside a derived type. */ |
8252 | ||
8253 | match | |
8254 | gfc_match_generic (void) | |
8255 | { | |
8256 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8257 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8258 | gfc_symbol* block; |
8259 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8260 | gfc_typebound_proc* tb; | |
e157f736 | 8261 | gfc_namespace* ns; |
94747289 DK |
8262 | interface_type op_type; |
8263 | gfc_intrinsic_op op; | |
e157f736 DK |
8264 | match m; |
8265 | ||
8266 | /* Check current state. */ | |
8267 | if (gfc_current_state () == COMP_DERIVED) | |
8268 | { | |
8269 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8270 | return MATCH_ERROR; | |
8271 | } | |
8272 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8273 | return MATCH_NO; | |
8274 | block = gfc_state_stack->previous->sym; | |
8275 | ns = block->f2k_derived; | |
8276 | gcc_assert (block && ns); | |
8277 | ||
ff5b6492 MM |
8278 | memset (&tbattr, 0, sizeof (tbattr)); |
8279 | tbattr.where = gfc_current_locus; | |
8280 | ||
e157f736 | 8281 | /* See if we get an access-specifier. */ |
713485cc | 8282 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8283 | if (m == MATCH_ERROR) |
8284 | goto error; | |
8285 | ||
8286 | /* Now the colons, those are required. */ | |
8287 | if (gfc_match (" ::") != MATCH_YES) | |
8288 | { | |
8289 | gfc_error ("Expected '::' at %C"); | |
8290 | goto error; | |
8291 | } | |
8292 | ||
94747289 DK |
8293 | /* Match the binding name; depending on type (operator / generic) format |
8294 | it for future error messages into bind_name. */ | |
8295 | ||
8296 | m = gfc_match_generic_spec (&op_type, name, &op); | |
e157f736 DK |
8297 | if (m == MATCH_ERROR) |
8298 | return MATCH_ERROR; | |
8299 | if (m == MATCH_NO) | |
8300 | { | |
94747289 | 8301 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8302 | goto error; |
8303 | } | |
8304 | ||
94747289 | 8305 | switch (op_type) |
e157f736 | 8306 | { |
94747289 DK |
8307 | case INTERFACE_GENERIC: |
8308 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8309 | break; | |
8310 | ||
8311 | case INTERFACE_USER_OP: | |
8312 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8313 | break; | |
8314 | ||
8315 | case INTERFACE_INTRINSIC_OP: | |
8316 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8317 | gfc_op2string (op)); | |
8318 | break; | |
8319 | ||
8320 | default: | |
8321 | gcc_unreachable (); | |
8322 | } | |
e34ccb4c | 8323 | |
94747289 DK |
8324 | /* Match the required =>. */ |
8325 | if (gfc_match (" =>") != MATCH_YES) | |
8326 | { | |
8327 | gfc_error ("Expected '=>' at %C"); | |
8328 | goto error; | |
8329 | } | |
8330 | ||
8331 | /* Try to find existing GENERIC binding with this name / for this operator; | |
8332 | if there is something, check that it is another GENERIC and then extend | |
8333 | it rather than building a new node. Otherwise, create it and put it | |
8334 | at the right position. */ | |
8335 | ||
8336 | switch (op_type) | |
8337 | { | |
8338 | case INTERFACE_USER_OP: | |
8339 | case INTERFACE_GENERIC: | |
8340 | { | |
8341 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8342 | gfc_symtree* st; | |
8343 | ||
8344 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8345 | if (st) | |
8346 | { | |
8347 | tb = st->n.tb; | |
8348 | gcc_assert (tb); | |
8349 | } | |
8350 | else | |
8351 | tb = NULL; | |
8352 | ||
8353 | break; | |
8354 | } | |
8355 | ||
8356 | case INTERFACE_INTRINSIC_OP: | |
8357 | tb = ns->tb_op[op]; | |
8358 | break; | |
8359 | ||
8360 | default: | |
8361 | gcc_unreachable (); | |
8362 | } | |
8363 | ||
8364 | if (tb) | |
8365 | { | |
e34ccb4c | 8366 | if (!tb->is_generic) |
e157f736 | 8367 | { |
94747289 | 8368 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 DK |
8369 | gfc_error ("There's already a non-generic procedure with binding name" |
8370 | " '%s' for the derived type '%s' at %C", | |
94747289 | 8371 | bind_name, block->name); |
e157f736 DK |
8372 | goto error; |
8373 | } | |
8374 | ||
e157f736 DK |
8375 | if (tb->access != tbattr.access) |
8376 | { | |
8377 | gfc_error ("Binding at %C must have the same access as already" | |
94747289 | 8378 | " defined binding '%s'", bind_name); |
e157f736 DK |
8379 | goto error; |
8380 | } | |
8381 | } | |
8382 | else | |
8383 | { | |
3e15518b | 8384 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8385 | tb->where = gfc_current_locus; |
8386 | tb->access = tbattr.access; | |
8387 | tb->is_generic = 1; | |
8388 | tb->u.generic = NULL; | |
94747289 DK |
8389 | |
8390 | switch (op_type) | |
8391 | { | |
8392 | case INTERFACE_GENERIC: | |
8393 | case INTERFACE_USER_OP: | |
8394 | { | |
8395 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8396 | gfc_symtree* st; | |
8397 | ||
8398 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8399 | name); | |
8400 | gcc_assert (st); | |
8401 | st->n.tb = tb; | |
8402 | ||
8403 | break; | |
8404 | } | |
8405 | ||
8406 | case INTERFACE_INTRINSIC_OP: | |
8407 | ns->tb_op[op] = tb; | |
8408 | break; | |
8409 | ||
8410 | default: | |
8411 | gcc_unreachable (); | |
8412 | } | |
e157f736 DK |
8413 | } |
8414 | ||
8415 | /* Now, match all following names as specific targets. */ | |
8416 | do | |
8417 | { | |
8418 | gfc_symtree* target_st; | |
8419 | gfc_tbp_generic* target; | |
8420 | ||
8421 | m = gfc_match_name (name); | |
8422 | if (m == MATCH_ERROR) | |
8423 | goto error; | |
8424 | if (m == MATCH_NO) | |
8425 | { | |
8426 | gfc_error ("Expected specific binding name at %C"); | |
8427 | goto error; | |
8428 | } | |
8429 | ||
e34ccb4c | 8430 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8431 | |
8432 | /* See if this is a duplicate specification. */ | |
8433 | for (target = tb->u.generic; target; target = target->next) | |
8434 | if (target_st == target->specific_st) | |
8435 | { | |
8436 | gfc_error ("'%s' already defined as specific binding for the" | |
94747289 | 8437 | " generic '%s' at %C", name, bind_name); |
e157f736 DK |
8438 | goto error; |
8439 | } | |
8440 | ||
e157f736 DK |
8441 | target = gfc_get_tbp_generic (); |
8442 | target->specific_st = target_st; | |
8443 | target->specific = NULL; | |
8444 | target->next = tb->u.generic; | |
218e1228 TB |
8445 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8446 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
8447 | tb->u.generic = target; |
8448 | } | |
8449 | while (gfc_match (" ,") == MATCH_YES); | |
8450 | ||
8451 | /* Here should be the end. */ | |
8452 | if (gfc_match_eos () != MATCH_YES) | |
8453 | { | |
8454 | gfc_error ("Junk after GENERIC binding at %C"); | |
8455 | goto error; | |
8456 | } | |
8457 | ||
8458 | return MATCH_YES; | |
8459 | ||
8460 | error: | |
8461 | return MATCH_ERROR; | |
8462 | } | |
8463 | ||
8464 | ||
34523524 DK |
8465 | /* Match a FINAL declaration inside a derived type. */ |
8466 | ||
8467 | match | |
8468 | gfc_match_final_decl (void) | |
8469 | { | |
8470 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8471 | gfc_symbol* sym; | |
8472 | match m; | |
8473 | gfc_namespace* module_ns; | |
8474 | bool first, last; | |
30b608eb | 8475 | gfc_symbol* block; |
34523524 | 8476 | |
33344e0f JW |
8477 | if (gfc_current_form == FORM_FREE) |
8478 | { | |
8479 | char c = gfc_peek_ascii_char (); | |
8480 | if (!gfc_is_whitespace (c) && c != ':') | |
8481 | return MATCH_NO; | |
8482 | } | |
8483 | ||
30b608eb | 8484 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8485 | { |
33344e0f JW |
8486 | if (gfc_current_form == FORM_FIXED) |
8487 | return MATCH_NO; | |
8488 | ||
34523524 | 8489 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8490 | "CONTAINS section"); |
34523524 DK |
8491 | return MATCH_ERROR; |
8492 | } | |
8493 | ||
30b608eb DK |
8494 | block = gfc_state_stack->previous->sym; |
8495 | gcc_assert (block); | |
34523524 | 8496 | |
30b608eb DK |
8497 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8498 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8499 | { |
8500 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8501 | " specification part of a MODULE"); | |
8502 | return MATCH_ERROR; | |
8503 | } | |
8504 | ||
8505 | module_ns = gfc_current_ns; | |
8506 | gcc_assert (module_ns); | |
8507 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8508 | ||
8509 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8510 | if (gfc_match (" ::") == MATCH_ERROR) | |
8511 | return MATCH_ERROR; | |
8512 | ||
8513 | /* Match the sequence of procedure names. */ | |
8514 | first = true; | |
8515 | last = false; | |
8516 | do | |
8517 | { | |
8518 | gfc_finalizer* f; | |
8519 | ||
8520 | if (first && gfc_match_eos () == MATCH_YES) | |
8521 | { | |
8522 | gfc_error ("Empty FINAL at %C"); | |
8523 | return MATCH_ERROR; | |
8524 | } | |
8525 | ||
8526 | m = gfc_match_name (name); | |
8527 | if (m == MATCH_NO) | |
8528 | { | |
8529 | gfc_error ("Expected module procedure name at %C"); | |
8530 | return MATCH_ERROR; | |
8531 | } | |
8532 | else if (m != MATCH_YES) | |
8533 | return MATCH_ERROR; | |
8534 | ||
8535 | if (gfc_match_eos () == MATCH_YES) | |
8536 | last = true; | |
8537 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8538 | { | |
8539 | gfc_error ("Expected ',' at %C"); | |
8540 | return MATCH_ERROR; | |
8541 | } | |
8542 | ||
8543 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8544 | { | |
8545 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8546 | return MATCH_ERROR; | |
8547 | } | |
8548 | ||
8549 | /* Mark the symbol as module procedure. */ | |
8550 | if (sym->attr.proc != PROC_MODULE | |
8551 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
8552 | sym->name, NULL) == FAILURE) | |
8553 | return MATCH_ERROR; | |
8554 | ||
8555 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 8556 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 8557 | if (f->proc_sym == sym) |
34523524 DK |
8558 | { |
8559 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8560 | name); | |
8561 | return MATCH_ERROR; | |
8562 | } | |
8563 | ||
8564 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 8565 | gcc_assert (block->f2k_derived); |
34523524 | 8566 | ++sym->refs; |
ece3f663 | 8567 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
8568 | f->proc_sym = sym; |
8569 | f->proc_tree = NULL; | |
34523524 | 8570 | f->where = gfc_current_locus; |
30b608eb DK |
8571 | f->next = block->f2k_derived->finalizers; |
8572 | block->f2k_derived->finalizers = f; | |
34523524 DK |
8573 | |
8574 | first = false; | |
8575 | } | |
8576 | while (!last); | |
8577 | ||
8578 | return MATCH_YES; | |
8579 | } | |
08a6b8e0 TB |
8580 | |
8581 | ||
8582 | const ext_attr_t ext_attr_list[] = { | |
8583 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, | |
8584 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8585 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8586 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8587 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8588 | { NULL, EXT_ATTR_LAST, NULL } | |
8589 | }; | |
8590 | ||
8591 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8592 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8593 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8594 | ||
8595 | TODO: We should support all GCC attributes using the same syntax for | |
8596 | the attribute list, i.e. the list in C | |
8597 | __attributes(( attribute-list )) | |
8598 | matches then | |
8599 | !GCC$ ATTRIBUTES attribute-list :: | |
8600 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8601 | saved into a TREE. | |
8602 | ||
8603 | As there is absolutely no risk of confusion, we should never return | |
8604 | MATCH_NO. */ | |
8605 | match | |
8606 | gfc_match_gcc_attributes (void) | |
8607 | { | |
8608 | symbol_attribute attr; | |
8609 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8610 | unsigned id; | |
8611 | gfc_symbol *sym; | |
8612 | match m; | |
8613 | ||
8614 | gfc_clear_attr (&attr); | |
8615 | for(;;) | |
8616 | { | |
8617 | char ch; | |
8618 | ||
8619 | if (gfc_match_name (name) != MATCH_YES) | |
8620 | return MATCH_ERROR; | |
8621 | ||
8622 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8623 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8624 | break; | |
8625 | ||
8626 | if (id == EXT_ATTR_LAST) | |
8627 | { | |
8628 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8629 | return MATCH_ERROR; | |
8630 | } | |
8631 | ||
2b374f55 | 8632 | if (gfc_add_ext_attribute (&attr, (ext_attr_id_t) id, &gfc_current_locus) |
08a6b8e0 TB |
8633 | == FAILURE) |
8634 | return MATCH_ERROR; | |
8635 | ||
8636 | gfc_gobble_whitespace (); | |
8637 | ch = gfc_next_ascii_char (); | |
8638 | if (ch == ':') | |
8639 | { | |
8640 | /* This is the successful exit condition for the loop. */ | |
8641 | if (gfc_next_ascii_char () == ':') | |
8642 | break; | |
8643 | } | |
8644 | ||
8645 | if (ch == ',') | |
8646 | continue; | |
8647 | ||
8648 | goto syntax; | |
8649 | } | |
8650 | ||
8651 | if (gfc_match_eos () == MATCH_YES) | |
8652 | goto syntax; | |
8653 | ||
8654 | for(;;) | |
8655 | { | |
8656 | m = gfc_match_name (name); | |
8657 | if (m != MATCH_YES) | |
8658 | return m; | |
8659 | ||
8660 | if (find_special (name, &sym, true)) | |
8661 | return MATCH_ERROR; | |
8662 | ||
8663 | sym->attr.ext_attr |= attr.ext_attr; | |
8664 | ||
8665 | if (gfc_match_eos () == MATCH_YES) | |
8666 | break; | |
8667 | ||
8668 | if (gfc_match_char (',') != MATCH_YES) | |
8669 | goto syntax; | |
8670 | } | |
8671 | ||
8672 | return MATCH_YES; | |
8673 | ||
8674 | syntax: | |
8675 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8676 | return MATCH_ERROR; | |
8677 | } |