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6de9cd9a | 1 | /* Declaration statement matcher |
85ec4feb | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
2adfab87 AM |
24 | #include "options.h" |
25 | #include "tree.h" | |
6de9cd9a | 26 | #include "gfortran.h" |
2adfab87 | 27 | #include "stringpool.h" |
6de9cd9a DN |
28 | #include "match.h" |
29 | #include "parse.h" | |
b7e75771 | 30 | #include "constructor.h" |
ca39e6f2 FXC |
31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
37 | |
38 | ||
524af0d6 | 39 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
40 | |
41 | ||
2054fc29 | 42 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
46fa431d | 47 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
6f855a26 | 57 | static int attr_seen; |
6de9cd9a | 58 | |
a8b3b0b6 | 59 | /* The current binding label (if any). */ |
9975a30b | 60 | static const char* curr_binding_label; |
a8b3b0b6 CR |
61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
25d8f0a2 TS |
68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
6de9cd9a DN |
92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
1c8bcdf7 | 96 | bool gfc_matching_function; |
e2d29968 | 97 | |
170a8bd6 EB |
98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
5bab4c96 PT |
101 | /* If a kind expression of a component of a parameterized derived type is |
102 | parameterized, temporarily store the expression here. */ | |
103 | static gfc_expr *saved_kind_expr = NULL; | |
104 | ||
105 | /* Used to store the parameter list arising in a PDT declaration and | |
106 | in the typespec of a PDT variable or component. */ | |
107 | static gfc_actual_arglist *decl_type_param_list; | |
108 | static gfc_actual_arglist *type_param_spec_list; | |
109 | ||
294fbfc8 TS |
110 | /********************* DATA statement subroutines *********************/ |
111 | ||
2220652d PT |
112 | static bool in_match_data = false; |
113 | ||
114 | bool | |
115 | gfc_in_match_data (void) | |
116 | { | |
117 | return in_match_data; | |
118 | } | |
119 | ||
ca39e6f2 FXC |
120 | static void |
121 | set_in_match_data (bool set_value) | |
2220652d PT |
122 | { |
123 | in_match_data = set_value; | |
124 | } | |
125 | ||
294fbfc8 TS |
126 | /* Free a gfc_data_variable structure and everything beneath it. */ |
127 | ||
128 | static void | |
636dff67 | 129 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
130 | { |
131 | gfc_data_variable *q; | |
132 | ||
133 | for (; p; p = q) | |
134 | { | |
135 | q = p->next; | |
136 | gfc_free_expr (p->expr); | |
137 | gfc_free_iterator (&p->iter, 0); | |
138 | free_variable (p->list); | |
cede9502 | 139 | free (p); |
294fbfc8 TS |
140 | } |
141 | } | |
142 | ||
143 | ||
144 | /* Free a gfc_data_value structure and everything beneath it. */ | |
145 | ||
146 | static void | |
636dff67 | 147 | free_value (gfc_data_value *p) |
294fbfc8 TS |
148 | { |
149 | gfc_data_value *q; | |
150 | ||
151 | for (; p; p = q) | |
152 | { | |
153 | q = p->next; | |
c9d75a48 | 154 | mpz_clear (p->repeat); |
294fbfc8 | 155 | gfc_free_expr (p->expr); |
cede9502 | 156 | free (p); |
294fbfc8 TS |
157 | } |
158 | } | |
159 | ||
160 | ||
161 | /* Free a list of gfc_data structures. */ | |
162 | ||
163 | void | |
636dff67 | 164 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
165 | { |
166 | gfc_data *q; | |
167 | ||
168 | for (; p; p = q) | |
169 | { | |
170 | q = p->next; | |
294fbfc8 TS |
171 | free_variable (p->var); |
172 | free_value (p->value); | |
cede9502 | 173 | free (p); |
294fbfc8 TS |
174 | } |
175 | } | |
176 | ||
177 | ||
a9f6f1f2 | 178 | /* Free all data in a namespace. */ |
636dff67 | 179 | |
a9f6f1f2 | 180 | static void |
66e4ab31 | 181 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
182 | { |
183 | gfc_data *d; | |
184 | ||
185 | for (;ns->data;) | |
186 | { | |
187 | d = ns->data->next; | |
cede9502 | 188 | free (ns->data); |
a9f6f1f2 JD |
189 | ns->data = d; |
190 | } | |
191 | } | |
192 | ||
d5e2274d SB |
193 | /* Reject data parsed since the last restore point was marked. */ |
194 | ||
195 | void | |
196 | gfc_reject_data (gfc_namespace *ns) | |
197 | { | |
198 | gfc_data *d; | |
199 | ||
200 | while (ns->data && ns->data != ns->old_data) | |
201 | { | |
202 | d = ns->data->next; | |
203 | free (ns->data); | |
204 | ns->data = d; | |
205 | } | |
206 | } | |
a9f6f1f2 | 207 | |
294fbfc8 TS |
208 | static match var_element (gfc_data_variable *); |
209 | ||
210 | /* Match a list of variables terminated by an iterator and a right | |
211 | parenthesis. */ | |
212 | ||
213 | static match | |
636dff67 | 214 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
215 | { |
216 | gfc_data_variable *tail, var; | |
217 | match m; | |
218 | ||
219 | m = var_element (&var); | |
220 | if (m == MATCH_ERROR) | |
221 | return MATCH_ERROR; | |
222 | if (m == MATCH_NO) | |
223 | goto syntax; | |
224 | ||
225 | tail = gfc_get_data_variable (); | |
226 | *tail = var; | |
227 | ||
228 | parent->list = tail; | |
229 | ||
230 | for (;;) | |
231 | { | |
232 | if (gfc_match_char (',') != MATCH_YES) | |
233 | goto syntax; | |
234 | ||
235 | m = gfc_match_iterator (&parent->iter, 1); | |
236 | if (m == MATCH_YES) | |
237 | break; | |
238 | if (m == MATCH_ERROR) | |
239 | return MATCH_ERROR; | |
240 | ||
241 | m = var_element (&var); | |
242 | if (m == MATCH_ERROR) | |
243 | return MATCH_ERROR; | |
244 | if (m == MATCH_NO) | |
245 | goto syntax; | |
246 | ||
247 | tail->next = gfc_get_data_variable (); | |
248 | tail = tail->next; | |
249 | ||
250 | *tail = var; | |
251 | } | |
252 | ||
253 | if (gfc_match_char (')') != MATCH_YES) | |
254 | goto syntax; | |
255 | return MATCH_YES; | |
256 | ||
257 | syntax: | |
258 | gfc_syntax_error (ST_DATA); | |
259 | return MATCH_ERROR; | |
260 | } | |
261 | ||
262 | ||
263 | /* Match a single element in a data variable list, which can be a | |
264 | variable-iterator list. */ | |
265 | ||
266 | static match | |
7b901ac4 | 267 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
268 | { |
269 | match m; | |
270 | gfc_symbol *sym; | |
271 | ||
7b901ac4 | 272 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
273 | |
274 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 275 | return var_list (new_var); |
294fbfc8 | 276 | |
7b901ac4 | 277 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
278 | if (m != MATCH_YES) |
279 | return m; | |
280 | ||
7b901ac4 | 281 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 282 | |
f37e928c | 283 | /* Symbol should already have an associated type. */ |
524af0d6 | 284 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
285 | return MATCH_ERROR; |
286 | ||
636dff67 SK |
287 | if (!sym->attr.function && gfc_current_ns->parent |
288 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 289 | { |
c4100eae | 290 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 291 | "statement at %C", sym->name); |
294fbfc8 TS |
292 | return MATCH_ERROR; |
293 | } | |
294 | ||
4075a94e | 295 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 296 | && sym->attr.in_common |
524af0d6 | 297 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 298 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 299 | sym->name)) |
4075a94e | 300 | return MATCH_ERROR; |
294fbfc8 | 301 | |
524af0d6 | 302 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
303 | return MATCH_ERROR; |
304 | ||
305 | return MATCH_YES; | |
306 | } | |
307 | ||
308 | ||
309 | /* Match the top-level list of data variables. */ | |
310 | ||
311 | static match | |
636dff67 | 312 | top_var_list (gfc_data *d) |
294fbfc8 | 313 | { |
7b901ac4 | 314 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
315 | match m; |
316 | ||
317 | tail = NULL; | |
318 | ||
319 | for (;;) | |
320 | { | |
321 | m = var_element (&var); | |
322 | if (m == MATCH_NO) | |
323 | goto syntax; | |
324 | if (m == MATCH_ERROR) | |
325 | return MATCH_ERROR; | |
326 | ||
7b901ac4 KG |
327 | new_var = gfc_get_data_variable (); |
328 | *new_var = var; | |
294fbfc8 TS |
329 | |
330 | if (tail == NULL) | |
7b901ac4 | 331 | d->var = new_var; |
294fbfc8 | 332 | else |
7b901ac4 | 333 | tail->next = new_var; |
294fbfc8 | 334 | |
7b901ac4 | 335 | tail = new_var; |
294fbfc8 TS |
336 | |
337 | if (gfc_match_char ('/') == MATCH_YES) | |
338 | break; | |
339 | if (gfc_match_char (',') != MATCH_YES) | |
340 | goto syntax; | |
341 | } | |
342 | ||
343 | return MATCH_YES; | |
344 | ||
345 | syntax: | |
346 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 347 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
348 | return MATCH_ERROR; |
349 | } | |
350 | ||
351 | ||
352 | static match | |
636dff67 | 353 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
354 | { |
355 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 356 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
357 | gfc_expr *expr; |
358 | match m; | |
36d3fb4c | 359 | locus old_loc; |
294fbfc8 TS |
360 | |
361 | m = gfc_match_literal_constant (&expr, 1); | |
362 | if (m == MATCH_YES) | |
363 | { | |
364 | *result = expr; | |
365 | return MATCH_YES; | |
366 | } | |
367 | ||
368 | if (m == MATCH_ERROR) | |
369 | return MATCH_ERROR; | |
370 | ||
371 | m = gfc_match_null (result); | |
372 | if (m != MATCH_NO) | |
373 | return m; | |
374 | ||
36d3fb4c PT |
375 | old_loc = gfc_current_locus; |
376 | ||
377 | /* Should this be a structure component, try to match it | |
378 | before matching a name. */ | |
379 | m = gfc_match_rvalue (result); | |
380 | if (m == MATCH_ERROR) | |
381 | return m; | |
382 | ||
383 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
384 | { | |
524af0d6 | 385 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
386 | m = MATCH_ERROR; |
387 | return m; | |
388 | } | |
46f4f794 | 389 | else if (m == MATCH_YES) |
b6e841a6 SK |
390 | { |
391 | /* F2018:R845 data-stmt-constant is initial-data-target. | |
392 | A data-stmt-constant shall be ... initial-data-target if and | |
393 | only if the corresponding data-stmt-object has the POINTER | |
394 | attribute. ... If data-stmt-constant is initial-data-target | |
395 | the corresponding data statement object shall be | |
396 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
397 | data target; the data statement object is initially associated | |
398 | with the target. */ | |
399 | if ((*result)->symtree->n.sym->attr.save | |
400 | && (*result)->symtree->n.sym->attr.target) | |
401 | return m; | |
402 | gfc_free_expr (*result); | |
403 | } | |
36d3fb4c PT |
404 | |
405 | gfc_current_locus = old_loc; | |
406 | ||
294fbfc8 TS |
407 | m = gfc_match_name (name); |
408 | if (m != MATCH_YES) | |
409 | return m; | |
410 | ||
411 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
412 | return MATCH_ERROR; | |
413 | ||
c3f34952 TB |
414 | if (sym && sym->attr.generic) |
415 | dt_sym = gfc_find_dt_in_generic (sym); | |
416 | ||
294fbfc8 | 417 | if (sym == NULL |
c3f34952 | 418 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 419 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 420 | { |
c4100eae | 421 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 422 | name); |
89f1f37e | 423 | *result = NULL; |
294fbfc8 TS |
424 | return MATCH_ERROR; |
425 | } | |
f6288c24 | 426 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 427 | return gfc_match_structure_constructor (dt_sym, result); |
294fbfc8 | 428 | |
d46e0870 JD |
429 | /* Check to see if the value is an initialization array expression. */ |
430 | if (sym->value->expr_type == EXPR_ARRAY) | |
431 | { | |
432 | gfc_current_locus = old_loc; | |
433 | ||
434 | m = gfc_match_init_expr (result); | |
435 | if (m == MATCH_ERROR) | |
436 | return m; | |
437 | ||
438 | if (m == MATCH_YES) | |
439 | { | |
524af0d6 | 440 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
441 | m = MATCH_ERROR; |
442 | ||
443 | if ((*result)->expr_type == EXPR_CONSTANT) | |
444 | return m; | |
445 | else | |
446 | { | |
447 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
448 | return MATCH_ERROR; | |
449 | } | |
450 | } | |
451 | } | |
452 | ||
294fbfc8 TS |
453 | *result = gfc_copy_expr (sym->value); |
454 | return MATCH_YES; | |
455 | } | |
456 | ||
457 | ||
458 | /* Match a list of values in a DATA statement. The leading '/' has | |
459 | already been seen at this point. */ | |
460 | ||
461 | static match | |
636dff67 | 462 | top_val_list (gfc_data *data) |
294fbfc8 | 463 | { |
7b901ac4 | 464 | gfc_data_value *new_val, *tail; |
294fbfc8 | 465 | gfc_expr *expr; |
294fbfc8 TS |
466 | match m; |
467 | ||
468 | tail = NULL; | |
469 | ||
470 | for (;;) | |
471 | { | |
472 | m = match_data_constant (&expr); | |
473 | if (m == MATCH_NO) | |
474 | goto syntax; | |
475 | if (m == MATCH_ERROR) | |
476 | return MATCH_ERROR; | |
477 | ||
7b901ac4 KG |
478 | new_val = gfc_get_data_value (); |
479 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
480 | |
481 | if (tail == NULL) | |
7b901ac4 | 482 | data->value = new_val; |
294fbfc8 | 483 | else |
7b901ac4 | 484 | tail->next = new_val; |
294fbfc8 | 485 | |
7b901ac4 | 486 | tail = new_val; |
294fbfc8 TS |
487 | |
488 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
489 | { | |
490 | tail->expr = expr; | |
f2112868 | 491 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
492 | } |
493 | else | |
494 | { | |
46f4f794 | 495 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 496 | gfc_free_expr (expr); |
294fbfc8 TS |
497 | |
498 | m = match_data_constant (&tail->expr); | |
499 | if (m == MATCH_NO) | |
500 | goto syntax; | |
501 | if (m == MATCH_ERROR) | |
502 | return MATCH_ERROR; | |
503 | } | |
504 | ||
505 | if (gfc_match_char ('/') == MATCH_YES) | |
506 | break; | |
507 | if (gfc_match_char (',') == MATCH_NO) | |
508 | goto syntax; | |
509 | } | |
510 | ||
511 | return MATCH_YES; | |
512 | ||
513 | syntax: | |
514 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 515 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
516 | return MATCH_ERROR; |
517 | } | |
518 | ||
519 | ||
520 | /* Matches an old style initialization. */ | |
521 | ||
522 | static match | |
523 | match_old_style_init (const char *name) | |
524 | { | |
525 | match m; | |
526 | gfc_symtree *st; | |
ed0e3607 | 527 | gfc_symbol *sym; |
294fbfc8 TS |
528 | gfc_data *newdata; |
529 | ||
530 | /* Set up data structure to hold initializers. */ | |
531 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
532 | sym = st->n.sym; |
533 | ||
294fbfc8 TS |
534 | newdata = gfc_get_data (); |
535 | newdata->var = gfc_get_data_variable (); | |
536 | newdata->var->expr = gfc_get_variable_expr (st); | |
e11449d1 | 537 | newdata->var->expr->where = sym->declared_at; |
8c5c0b80 | 538 | newdata->where = gfc_current_locus; |
294fbfc8 | 539 | |
66e4ab31 | 540 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
541 | m = top_val_list (newdata); |
542 | if (m != MATCH_YES) | |
543 | { | |
cede9502 | 544 | free (newdata); |
294fbfc8 TS |
545 | return m; |
546 | } | |
547 | ||
548 | if (gfc_pure (NULL)) | |
549 | { | |
550 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 551 | free (newdata); |
294fbfc8 TS |
552 | return MATCH_ERROR; |
553 | } | |
ccd7751b | 554 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 555 | |
ed0e3607 | 556 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 557 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 558 | { |
cede9502 | 559 | free (newdata); |
ed0e3607 AL |
560 | return MATCH_ERROR; |
561 | } | |
562 | ||
294fbfc8 TS |
563 | /* Chain in namespace list of DATA initializers. */ |
564 | newdata->next = gfc_current_ns->data; | |
565 | gfc_current_ns->data = newdata; | |
566 | ||
567 | return m; | |
568 | } | |
569 | ||
636dff67 | 570 | |
294fbfc8 | 571 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 572 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 573 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 574 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
575 | |
576 | match | |
577 | gfc_match_data (void) | |
578 | { | |
7b901ac4 | 579 | gfc_data *new_data; |
294fbfc8 TS |
580 | match m; |
581 | ||
5f0ba745 SK |
582 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
583 | if ((gfc_current_state () == COMP_FUNCTION | |
584 | || gfc_current_state () == COMP_SUBROUTINE) | |
585 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
586 | { | |
587 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
588 | return MATCH_ERROR; | |
589 | } | |
590 | ||
ca39e6f2 | 591 | set_in_match_data (true); |
2220652d | 592 | |
294fbfc8 TS |
593 | for (;;) |
594 | { | |
7b901ac4 KG |
595 | new_data = gfc_get_data (); |
596 | new_data->where = gfc_current_locus; | |
294fbfc8 | 597 | |
7b901ac4 | 598 | m = top_var_list (new_data); |
294fbfc8 TS |
599 | if (m != MATCH_YES) |
600 | goto cleanup; | |
601 | ||
c034c38f SK |
602 | if (new_data->var->iter.var |
603 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
604 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
605 | && new_data->var->list | |
606 | && new_data->var->list->expr | |
607 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
608 | && new_data->var->list->expr->ref | |
609 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
610 | { | |
611 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
612 | "statement", &new_data->var->list->expr->where); | |
613 | goto cleanup; | |
614 | } | |
615 | ||
7b901ac4 | 616 | m = top_val_list (new_data); |
294fbfc8 TS |
617 | if (m != MATCH_YES) |
618 | goto cleanup; | |
619 | ||
7b901ac4 KG |
620 | new_data->next = gfc_current_ns->data; |
621 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
622 | |
623 | if (gfc_match_eos () == MATCH_YES) | |
624 | break; | |
625 | ||
626 | gfc_match_char (','); /* Optional comma */ | |
627 | } | |
628 | ||
ca39e6f2 | 629 | set_in_match_data (false); |
2220652d | 630 | |
294fbfc8 TS |
631 | if (gfc_pure (NULL)) |
632 | { | |
633 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
634 | return MATCH_ERROR; | |
635 | } | |
ccd7751b | 636 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 637 | |
294fbfc8 TS |
638 | return MATCH_YES; |
639 | ||
640 | cleanup: | |
ca39e6f2 | 641 | set_in_match_data (false); |
7b901ac4 | 642 | gfc_free_data (new_data); |
294fbfc8 TS |
643 | return MATCH_ERROR; |
644 | } | |
645 | ||
646 | ||
647 | /************************ Declaration statements *********************/ | |
648 | ||
d3a9eea2 | 649 | |
f6288c24 FR |
650 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
651 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 652 | and is surrounded by '/'. |
f6288c24 FR |
653 | The typespec ts must match the typespec of the variable which the |
654 | clist is initializing. | |
6442a6f4 | 655 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
656 | corresponding to array elements or a scalar (as == NULL). */ |
657 | ||
658 | static match | |
659 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
660 | { | |
661 | gfc_constructor_base array_head = NULL; | |
662 | gfc_expr *expr = NULL; | |
e11449d1 | 663 | match m = MATCH_ERROR; |
f6288c24 | 664 | locus where; |
9b24c104 | 665 | mpz_t repeat, cons_size, as_size; |
f6288c24 FR |
666 | bool scalar; |
667 | int cmp; | |
668 | ||
669 | gcc_assert (ts); | |
670 | ||
f6288c24 FR |
671 | /* We have already matched '/' - now look for a constant list, as with |
672 | top_val_list from decl.c, but append the result to an array. */ | |
673 | if (gfc_match ("/") == MATCH_YES) | |
674 | { | |
675 | gfc_error ("Empty old style initializer list at %C"); | |
e11449d1 | 676 | return MATCH_ERROR; |
f6288c24 FR |
677 | } |
678 | ||
679 | where = gfc_current_locus; | |
e11449d1 FR |
680 | scalar = !as || !as->rank; |
681 | ||
682 | if (!scalar && !spec_size (as, &as_size)) | |
683 | { | |
684 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
685 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
686 | /* Nothing to cleanup yet. */ | |
687 | return MATCH_ERROR; | |
688 | } | |
689 | ||
690 | mpz_init_set_ui (repeat, 0); | |
691 | ||
f6288c24 FR |
692 | for (;;) |
693 | { | |
694 | m = match_data_constant (&expr); | |
695 | if (m != MATCH_YES) | |
696 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
697 | if (m == MATCH_NO) | |
698 | goto syntax; | |
699 | if (m == MATCH_ERROR) | |
700 | goto cleanup; | |
701 | ||
702 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
703 | if ( gfc_match_char ('*') == MATCH_YES) | |
704 | { | |
705 | if (scalar) | |
706 | { | |
707 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
708 | goto cleanup; | |
709 | } | |
710 | if (expr->ts.type != BT_INTEGER) | |
711 | { | |
712 | gfc_error ("Repeat spec must be an integer at %C"); | |
713 | goto cleanup; | |
714 | } | |
715 | mpz_set (repeat, expr->value.integer); | |
716 | gfc_free_expr (expr); | |
717 | expr = NULL; | |
718 | ||
719 | m = match_data_constant (&expr); | |
720 | if (m == MATCH_NO) | |
e11449d1 FR |
721 | { |
722 | m = MATCH_ERROR; | |
723 | gfc_error ("Expected data constant after repeat spec at %C"); | |
724 | } | |
f6288c24 FR |
725 | if (m != MATCH_YES) |
726 | goto cleanup; | |
727 | } | |
728 | /* No repeat spec, we matched the data constant itself. */ | |
729 | else | |
730 | mpz_set_ui (repeat, 1); | |
731 | ||
732 | if (!scalar) | |
733 | { | |
734 | /* Add the constant initializer as many times as repeated. */ | |
735 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
736 | { | |
737 | /* Make sure types of elements match */ | |
738 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
739 | && !gfc_convert_type (expr, ts, 1)) | |
740 | goto cleanup; | |
741 | ||
742 | gfc_constructor_append_expr (&array_head, | |
743 | gfc_copy_expr (expr), &gfc_current_locus); | |
744 | } | |
745 | ||
746 | gfc_free_expr (expr); | |
747 | expr = NULL; | |
748 | } | |
749 | ||
750 | /* For scalar initializers quit after one element. */ | |
751 | else | |
752 | { | |
753 | if(gfc_match_char ('/') != MATCH_YES) | |
754 | { | |
755 | gfc_error ("End of scalar initializer expected at %C"); | |
756 | goto cleanup; | |
757 | } | |
758 | break; | |
759 | } | |
760 | ||
761 | if (gfc_match_char ('/') == MATCH_YES) | |
762 | break; | |
763 | if (gfc_match_char (',') == MATCH_NO) | |
764 | goto syntax; | |
765 | } | |
766 | ||
e11449d1 FR |
767 | /* If we break early from here out, we encountered an error. */ |
768 | m = MATCH_ERROR; | |
769 | ||
f6288c24 FR |
770 | /* Set up expr as an array constructor. */ |
771 | if (!scalar) | |
772 | { | |
773 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
774 | expr->ts = *ts; | |
775 | expr->value.constructor = array_head; | |
776 | ||
777 | expr->rank = as->rank; | |
778 | expr->shape = gfc_get_shape (expr->rank); | |
779 | ||
9b24c104 FR |
780 | /* Validate sizes. We built expr ourselves, so cons_size will be |
781 | constant (we fail above for non-constant expressions). | |
e11449d1 | 782 | We still need to verify that the sizes match. */ |
9b24c104 | 783 | gcc_assert (gfc_array_size (expr, &cons_size)); |
e11449d1 FR |
784 | cmp = mpz_cmp (cons_size, as_size); |
785 | if (cmp < 0) | |
786 | gfc_error ("Not enough elements in array initializer at %C"); | |
787 | else if (cmp > 0) | |
788 | gfc_error ("Too many elements in array initializer at %C"); | |
9b24c104 | 789 | mpz_clear (cons_size); |
f6288c24 | 790 | if (cmp) |
9b24c104 | 791 | goto cleanup; |
f6288c24 FR |
792 | } |
793 | ||
794 | /* Make sure scalar types match. */ | |
795 | else if (!gfc_compare_types (&expr->ts, ts) | |
796 | && !gfc_convert_type (expr, ts, 1)) | |
797 | goto cleanup; | |
798 | ||
799 | if (expr->ts.u.cl) | |
800 | expr->ts.u.cl->length_from_typespec = 1; | |
801 | ||
802 | *result = expr; | |
e11449d1 FR |
803 | m = MATCH_YES; |
804 | goto done; | |
f6288c24 FR |
805 | |
806 | syntax: | |
e11449d1 | 807 | m = MATCH_ERROR; |
f6288c24 FR |
808 | gfc_error ("Syntax error in old style initializer list at %C"); |
809 | ||
810 | cleanup: | |
811 | if (expr) | |
812 | expr->value.constructor = NULL; | |
813 | gfc_free_expr (expr); | |
814 | gfc_constructor_free (array_head); | |
e11449d1 FR |
815 | |
816 | done: | |
f6288c24 | 817 | mpz_clear (repeat); |
e11449d1 FR |
818 | if (!scalar) |
819 | mpz_clear (as_size); | |
820 | return m; | |
f6288c24 FR |
821 | } |
822 | ||
823 | ||
eea58adb | 824 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 825 | |
524af0d6 | 826 | static bool |
d3a9eea2 TB |
827 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
828 | { | |
93d1ab50 | 829 | int i, j; |
d3a9eea2 | 830 | |
63fbf586 TB |
831 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
832 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
833 | { | |
834 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 835 | return false; |
63fbf586 | 836 | } |
c62c6622 | 837 | |
d3a9eea2 TB |
838 | if (to->rank == 0 && from->rank > 0) |
839 | { | |
840 | to->rank = from->rank; | |
841 | to->type = from->type; | |
842 | to->cray_pointee = from->cray_pointee; | |
843 | to->cp_was_assumed = from->cp_was_assumed; | |
844 | ||
845 | for (i = 0; i < to->corank; i++) | |
846 | { | |
93d1ab50 SK |
847 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
848 | cleans up elsewhere. */ | |
849 | j = from->rank + i; | |
850 | if (j >= GFC_MAX_DIMENSIONS) | |
851 | break; | |
852 | ||
853 | to->lower[j] = to->lower[i]; | |
854 | to->upper[j] = to->upper[i]; | |
d3a9eea2 TB |
855 | } |
856 | for (i = 0; i < from->rank; i++) | |
857 | { | |
858 | if (copy) | |
859 | { | |
860 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
861 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
862 | } | |
863 | else | |
864 | { | |
865 | to->lower[i] = from->lower[i]; | |
866 | to->upper[i] = from->upper[i]; | |
867 | } | |
868 | } | |
869 | } | |
870 | else if (to->corank == 0 && from->corank > 0) | |
871 | { | |
872 | to->corank = from->corank; | |
873 | to->cotype = from->cotype; | |
874 | ||
875 | for (i = 0; i < from->corank; i++) | |
876 | { | |
93d1ab50 SK |
877 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
878 | cleans up elsewhere. */ | |
879 | j = to->rank + i; | |
880 | if (j >= GFC_MAX_DIMENSIONS) | |
881 | break; | |
882 | ||
d3a9eea2 TB |
883 | if (copy) |
884 | { | |
93d1ab50 SK |
885 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
886 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
d3a9eea2 TB |
887 | } |
888 | else | |
889 | { | |
93d1ab50 SK |
890 | to->lower[j] = from->lower[i]; |
891 | to->upper[j] = from->upper[i]; | |
d3a9eea2 TB |
892 | } |
893 | } | |
894 | } | |
63fbf586 | 895 | |
299ab1b2 | 896 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
93d1ab50 SK |
897 | { |
898 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
899 | "allowed dimensions of %d", | |
900 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
901 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
902 | return false; | |
903 | } | |
524af0d6 | 904 | return true; |
d3a9eea2 TB |
905 | } |
906 | ||
907 | ||
6de9cd9a DN |
908 | /* Match an intent specification. Since this can only happen after an |
909 | INTENT word, a legal intent-spec must follow. */ | |
910 | ||
911 | static sym_intent | |
912 | match_intent_spec (void) | |
913 | { | |
914 | ||
915 | if (gfc_match (" ( in out )") == MATCH_YES) | |
916 | return INTENT_INOUT; | |
917 | if (gfc_match (" ( in )") == MATCH_YES) | |
918 | return INTENT_IN; | |
919 | if (gfc_match (" ( out )") == MATCH_YES) | |
920 | return INTENT_OUT; | |
921 | ||
922 | gfc_error ("Bad INTENT specification at %C"); | |
923 | return INTENT_UNKNOWN; | |
924 | } | |
925 | ||
926 | ||
927 | /* Matches a character length specification, which is either a | |
e69afb29 | 928 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
929 | |
930 | static match | |
e69afb29 | 931 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 932 | { |
cba28dad JD |
933 | match m; |
934 | ||
e69afb29 SK |
935 | *expr = NULL; |
936 | *deferred = false; | |
937 | ||
6de9cd9a | 938 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
939 | return MATCH_YES; |
940 | ||
941 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 942 | { |
98a819ea | 943 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
944 | return MATCH_ERROR; |
945 | ||
946 | *deferred = true; | |
947 | ||
6de9cd9a DN |
948 | return MATCH_YES; |
949 | } | |
950 | ||
cba28dad | 951 | m = gfc_match_expr (expr); |
f37e928c | 952 | |
98a819ea SK |
953 | if (m == MATCH_NO || m == MATCH_ERROR) |
954 | return m; | |
955 | ||
956 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
957 | return MATCH_ERROR; |
958 | ||
98a819ea | 959 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 960 | { |
8d48826b SK |
961 | if ((*expr)->ts.type == BT_INTEGER |
962 | || ((*expr)->ts.type == BT_UNKNOWN | |
963 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
964 | return MATCH_YES; | |
965 | ||
966 | goto syntax; | |
967 | } | |
968 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
969 | { | |
970 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
971 | processor dependent and its value is greater than or equal to zero. | |
972 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
973 | to a negative value, the length of character entities declared | |
974 | is zero. */ | |
975 | ||
976 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 977 | { |
8d48826b SK |
978 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
979 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 980 | } |
8d48826b SK |
981 | else |
982 | goto syntax; | |
cba28dad | 983 | } |
8d48826b SK |
984 | else if ((*expr)->expr_type == EXPR_ARRAY) |
985 | goto syntax; | |
986 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
987 | { | |
fb42421e | 988 | bool t; |
8d48826b SK |
989 | gfc_expr *e; |
990 | ||
991 | e = gfc_copy_expr (*expr); | |
992 | ||
993 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
994 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
995 | if (e->ref && e->ref->type == REF_ARRAY |
996 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
997 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
998 | goto syntax; | |
999 | ||
fb42421e SK |
1000 | t = gfc_reduce_init_expr (e); |
1001 | ||
8d987deb SK |
1002 | if (!t && e->ts.type == BT_UNKNOWN |
1003 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
1004 | && (flag_implicit_none |
1005 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 1006 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
1007 | { |
1008 | gfc_free_expr (e); | |
1009 | goto syntax; | |
1010 | } | |
98a819ea | 1011 | |
54b96a2d | 1012 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 1013 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
1014 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1015 | { | |
1016 | gfc_free_expr (e); | |
1017 | goto syntax; | |
1018 | } | |
1019 | ||
1020 | gfc_free_expr (e); | |
1021 | } | |
98a819ea | 1022 | |
cba28dad JD |
1023 | return m; |
1024 | ||
1025 | syntax: | |
8d48826b | 1026 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 1027 | return MATCH_ERROR; |
6de9cd9a DN |
1028 | } |
1029 | ||
1030 | ||
1031 | /* A character length is a '*' followed by a literal integer or a | |
1032 | char_len_param_value in parenthesis. */ | |
1033 | ||
1034 | static match | |
62732c30 | 1035 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 1036 | { |
5cf54585 | 1037 | int length; |
6de9cd9a DN |
1038 | match m; |
1039 | ||
f5acf0f2 | 1040 | *deferred = false; |
6de9cd9a DN |
1041 | m = gfc_match_char ('*'); |
1042 | if (m != MATCH_YES) | |
1043 | return m; | |
1044 | ||
5cf54585 | 1045 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
1046 | if (m == MATCH_ERROR) |
1047 | return m; | |
1048 | ||
1049 | if (m == MATCH_YES) | |
1050 | { | |
62732c30 | 1051 | if (obsolescent_check |
524af0d6 | 1052 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 1053 | return MATCH_ERROR; |
f622221a | 1054 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
6de9cd9a DN |
1055 | return m; |
1056 | } | |
1057 | ||
1058 | if (gfc_match_char ('(') == MATCH_NO) | |
1059 | goto syntax; | |
1060 | ||
e69afb29 | 1061 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
1062 | if (m != MATCH_YES && gfc_matching_function) |
1063 | { | |
1064 | gfc_undo_symbols (); | |
1065 | m = MATCH_YES; | |
1066 | } | |
1067 | ||
6de9cd9a DN |
1068 | if (m == MATCH_ERROR) |
1069 | return m; | |
1070 | if (m == MATCH_NO) | |
1071 | goto syntax; | |
1072 | ||
1073 | if (gfc_match_char (')') == MATCH_NO) | |
1074 | { | |
1075 | gfc_free_expr (*expr); | |
1076 | *expr = NULL; | |
1077 | goto syntax; | |
1078 | } | |
1079 | ||
1080 | return MATCH_YES; | |
1081 | ||
1082 | syntax: | |
1083 | gfc_error ("Syntax error in character length specification at %C"); | |
1084 | return MATCH_ERROR; | |
1085 | } | |
1086 | ||
1087 | ||
9e35b386 EE |
1088 | /* Special subroutine for finding a symbol. Check if the name is found |
1089 | in the current name space. If not, and we're compiling a function or | |
1090 | subroutine and the parent compilation unit is an interface, then check | |
1091 | to see if the name we've been given is the name of the interface | |
1092 | (located in another namespace). */ | |
6de9cd9a DN |
1093 | |
1094 | static int | |
08a6b8e0 | 1095 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1096 | { |
1097 | gfc_state_data *s; | |
08a6b8e0 | 1098 | gfc_symtree *st; |
9e35b386 | 1099 | int i; |
6de9cd9a | 1100 | |
08a6b8e0 | 1101 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1102 | if (i == 0) |
08a6b8e0 TB |
1103 | { |
1104 | *result = st ? st->n.sym : NULL; | |
1105 | goto end; | |
1106 | } | |
d51347f9 | 1107 | |
6de9cd9a DN |
1108 | if (gfc_current_state () != COMP_SUBROUTINE |
1109 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1110 | goto end; |
6de9cd9a DN |
1111 | |
1112 | s = gfc_state_stack->previous; | |
1113 | if (s == NULL) | |
9e35b386 | 1114 | goto end; |
6de9cd9a DN |
1115 | |
1116 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1117 | goto end; |
6de9cd9a | 1118 | if (s->sym == NULL) |
66e4ab31 | 1119 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1120 | |
1121 | if (strcmp (name, s->sym->name) == 0) | |
1122 | { | |
1123 | *result = s->sym; | |
1124 | return 0; | |
1125 | } | |
1126 | ||
9e35b386 EE |
1127 | end: |
1128 | return i; | |
6de9cd9a DN |
1129 | } |
1130 | ||
1131 | ||
1132 | /* Special subroutine for getting a symbol node associated with a | |
1133 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1134 | symbol is created in the parent using with symtree node in the | |
1135 | child unit pointing to the symbol. If the current namespace has no | |
1136 | parent, then the symbol is just created in the current unit. */ | |
1137 | ||
1138 | static int | |
636dff67 | 1139 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1140 | { |
1141 | gfc_symtree *st; | |
1142 | gfc_symbol *sym; | |
a7ca4d8d | 1143 | int rc = 0; |
6de9cd9a | 1144 | |
1a492601 PT |
1145 | /* Module functions have to be left in their own namespace because |
1146 | they have potentially (almost certainly!) already been referenced. | |
1147 | In this sense, they are rather like external functions. This is | |
1148 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1149 | space is set to point to the master function, so that the fake | |
1150 | result mechanism can work. */ | |
1151 | if (module_fcn_entry) | |
6c12686b PT |
1152 | { |
1153 | /* Present if entry is declared to be a module procedure. */ | |
1154 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1155 | |
6c12686b PT |
1156 | if (*result == NULL) |
1157 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1158 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1159 | && (*result)->ts.type == BT_UNKNOWN |
1160 | && sym->attr.flavor == FL_UNKNOWN) | |
1161 | /* Pick up the typespec for the entry, if declared in the function | |
1162 | body. Note that this symbol is FL_UNKNOWN because it will | |
1163 | only have appeared in a type declaration. The local symtree | |
1164 | is set to point to the module symbol and a unique symtree | |
1165 | to the local version. This latter ensures a correct clearing | |
1166 | of the symbols. */ | |
2e32a71e PT |
1167 | { |
1168 | /* If the ENTRY proceeds its specification, we need to ensure | |
1169 | that this does not raise a "has no IMPLICIT type" error. */ | |
1170 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1171 | sym->attr.untyped = 1; |
2e32a71e | 1172 | |
0e5a218b | 1173 | (*result)->ts = sym->ts; |
2e32a71e PT |
1174 | |
1175 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1176 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1177 | can be applied. */ |
1178 | (*result)->ns = gfc_current_ns; | |
1179 | ||
1180 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1181 | st->n.sym = *result; | |
1182 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1183 | sym->refs++; |
2e32a71e PT |
1184 | st->n.sym = sym; |
1185 | } | |
6c12686b | 1186 | } |
68ea355b PT |
1187 | else |
1188 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1189 | |
a7ca4d8d PT |
1190 | if (rc) |
1191 | return rc; | |
1192 | ||
68ea355b | 1193 | sym = *result; |
79124116 PT |
1194 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1195 | return rc; | |
6de9cd9a | 1196 | |
96c8b253 | 1197 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4668d6f9 PT |
1198 | { |
1199 | /* Create a partially populated interface symbol to carry the | |
1200 | characteristics of the procedure and the result. */ | |
c064374d | 1201 | sym->tlink = gfc_new_symbol (name, sym->ns); |
96c8b253 | 1202 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
c064374d | 1203 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1204 | if (sym->attr.dimension) |
c064374d | 1205 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1206 | |
1207 | /* Ideally, at this point, a copy would be made of the formal | |
1208 | arguments and their namespace. However, this does not appear | |
1209 | to be necessary, albeit at the expense of not being able to | |
1210 | use gfc_compare_interfaces directly. */ | |
1211 | ||
1212 | if (sym->result && sym->result != sym) | |
1213 | { | |
c064374d | 1214 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1215 | sym->result = NULL; |
1216 | } | |
1217 | else if (sym->result) | |
1218 | { | |
c064374d | 1219 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1220 | } |
1221 | } | |
1222 | else if (sym && !sym->gfc_new | |
1223 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1224 | { |
cda7004b PT |
1225 | /* Trap another encompassed procedure with the same name. All |
1226 | these conditions are necessary to avoid picking up an entry | |
1227 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1228 | this is handled using gsymbols to register unique, globally |
cda7004b | 1229 | accessible names. */ |
68ea355b | 1230 | if (sym->attr.flavor != 0 |
636dff67 | 1231 | && sym->attr.proc != 0 |
64300da7 | 1232 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
636dff67 | 1233 | && sym->attr.if_source != IFSRC_UNKNOWN) |
b4439561 TB |
1234 | { |
1235 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1236 | name, &sym->declared_at); | |
1237 | return true; | |
1238 | } | |
64300da7 SK |
1239 | if (sym->attr.flavor != 0 |
1240 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
b4439561 TB |
1241 | { |
1242 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1243 | name, &sym->declared_at); | |
1244 | return true; | |
1245 | } | |
64300da7 | 1246 | |
81ea7c11 SK |
1247 | if (sym->attr.external && sym->attr.procedure |
1248 | && gfc_current_state () == COMP_CONTAINS) | |
b4439561 TB |
1249 | { |
1250 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1251 | "procedure defined at %L", | |
1252 | name, &sym->declared_at); | |
1253 | return true; | |
1254 | } | |
81ea7c11 | 1255 | |
fd3e70af JD |
1256 | /* Trap a procedure with a name the same as interface in the |
1257 | encompassing scope. */ | |
1258 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1259 | && (sym->attr.subroutine || sym->attr.function) |
1260 | && !sym->attr.mod_proc) | |
b4439561 TB |
1261 | { |
1262 | gfc_error_now ("Name %qs at %C is already defined" | |
1263 | " as a generic interface at %L", | |
1264 | name, &sym->declared_at); | |
1265 | return true; | |
1266 | } | |
fd3e70af | 1267 | |
68ea355b PT |
1268 | /* Trap declarations of attributes in encompassing scope. The |
1269 | signature for this is that ts.kind is set. Legitimate | |
1270 | references only set ts.type. */ | |
1271 | if (sym->ts.kind != 0 | |
636dff67 SK |
1272 | && !sym->attr.implicit_type |
1273 | && sym->attr.proc == 0 | |
1274 | && gfc_current_ns->parent != NULL | |
1275 | && sym->attr.access == 0 | |
1276 | && !module_fcn_entry) | |
b4439561 TB |
1277 | { |
1278 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
96c8b253 | 1279 | "from a previous declaration", name); |
b4439561 TB |
1280 | return true; |
1281 | } | |
96c8b253 SK |
1282 | } |
1283 | ||
b74fa126 SK |
1284 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1285 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1286 | body that is declared in the scoping unit of a module or submodule. */ | |
1287 | if (sym->attr.external | |
1288 | && (sym->attr.subroutine || sym->attr.function) | |
1289 | && sym->attr.if_source == IFSRC_IFBODY | |
1290 | && !current_attr.module_procedure | |
1291 | && sym->attr.proc == PROC_MODULE | |
1292 | && gfc_state_stack->state == COMP_CONTAINS) | |
b4439561 TB |
1293 | { |
1294 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1295 | "clashes with internal procedure defined at %C", | |
1296 | name, &sym->declared_at); | |
1297 | return true; | |
1298 | } | |
b74fa126 SK |
1299 | |
1300 | if (sym && !sym->gfc_new | |
1301 | && sym->attr.flavor != FL_UNKNOWN | |
1302 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1303 | && gfc_state_stack->state == COMP_CONTAINS | |
1304 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
b4439561 TB |
1305 | { |
1306 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1307 | name, &sym->declared_at); | |
1308 | return true; | |
1309 | } | |
68ea355b PT |
1310 | |
1311 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1312 | return rc; | |
6de9cd9a | 1313 | |
1a492601 PT |
1314 | /* Module function entries will already have a symtree in |
1315 | the current namespace but will need one at module level. */ | |
1316 | if (module_fcn_entry) | |
6c12686b PT |
1317 | { |
1318 | /* Present if entry is declared to be a module procedure. */ | |
1319 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1320 | if (st == NULL) | |
1321 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1322 | } | |
1a492601 PT |
1323 | else |
1324 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1325 | |
6de9cd9a DN |
1326 | st->n.sym = sym; |
1327 | sym->refs++; | |
1328 | ||
66e4ab31 | 1329 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1330 | |
1a492601 | 1331 | if (((sym->ns->proc_name != NULL |
96c8b253 SK |
1332 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1333 | && sym->attr.proc != PROC_MODULE) | |
1334 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1335 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
6de9cd9a DN |
1336 | rc = 2; |
1337 | ||
1338 | return rc; | |
1339 | } | |
1340 | ||
1341 | ||
a8b3b0b6 CR |
1342 | /* Verify that the given symbol representing a parameter is C |
1343 | interoperable, by checking to see if it was marked as such after | |
1344 | its declaration. If the given symbol is not interoperable, a | |
1345 | warning is reported, thus removing the need to return the status to | |
1346 | the calling function. The standard does not require the user use | |
1347 | one of the iso_c_binding named constants to declare an | |
1348 | interoperable parameter, but we can't be sure if the param is C | |
1349 | interop or not if the user doesn't. For example, integer(4) may be | |
1350 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1351 | a number of the C types, which causes a problem because the | |
1352 | compiler can't know which one. This code is almost certainly not | |
1353 | portable, and the user will get what they deserve if the C type | |
1354 | across platforms isn't always interoperable with integer(4). If | |
1355 | the user had used something like integer(c_int) or integer(c_long), | |
1356 | the compiler could have automatically handled the varying sizes | |
1357 | across platforms. */ | |
1358 | ||
524af0d6 | 1359 | bool |
00820a2a | 1360 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1361 | { |
1362 | int is_c_interop = 0; | |
524af0d6 | 1363 | bool retval = true; |
a8b3b0b6 CR |
1364 | |
1365 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1366 | Don't repeat the checks here. */ | |
1367 | if (sym->attr.implicit_type) | |
524af0d6 | 1368 | return true; |
f5acf0f2 | 1369 | |
a8b3b0b6 CR |
1370 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1371 | they're interoperable if they're BIND(C) and their params are all | |
1372 | interoperable. */ | |
1373 | if (sym->attr.flavor == FL_PROCEDURE) | |
1374 | { | |
1375 | if (sym->attr.is_bind_c == 0) | |
1376 | { | |
4daa149b TB |
1377 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1378 | "attribute to be C interoperable", sym->name, | |
1379 | &(sym->declared_at)); | |
524af0d6 | 1380 | return false; |
a8b3b0b6 CR |
1381 | } |
1382 | else | |
1383 | { | |
1384 | if (sym->attr.is_c_interop == 1) | |
1385 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1386 | return true; |
a8b3b0b6 CR |
1387 | else |
1388 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1389 | sym->common_block); | |
1390 | } | |
1391 | } | |
f5acf0f2 | 1392 | |
a8b3b0b6 CR |
1393 | /* See if we've stored a reference to a procedure that owns sym. */ |
1394 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1395 | { | |
1396 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1397 | { | |
524af0d6 | 1398 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1399 | |
1400 | if (is_c_interop != 1) | |
1401 | { | |
1402 | /* Make personalized messages to give better feedback. */ | |
1403 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1404 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1405 | "BIND(C) procedure %qs but is not C interoperable " | |
1406 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1407 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1408 | sym->ns->proc_name->name, |
bc21d315 | 1409 | sym->ts.u.derived->name); |
00820a2a | 1410 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1411 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1412 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1413 | "because it is polymorphic", |
1414 | sym->name, &(sym->declared_at), | |
1415 | sym->ns->proc_name->name); | |
4daa149b | 1416 | else if (warn_c_binding_type) |
48749dbc MLI |
1417 | gfc_warning (OPT_Wc_binding_type, |
1418 | "Variable %qs at %L is a dummy argument of the " | |
1419 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1420 | "interoperable", |
1421 | sym->name, &(sym->declared_at), | |
1422 | sym->ns->proc_name->name); | |
1423 | } | |
aa5e22f0 CR |
1424 | |
1425 | /* Character strings are only C interoperable if they have a | |
1426 | length of 1. */ | |
1427 | if (sym->ts.type == BT_CHARACTER) | |
1428 | { | |
bc21d315 | 1429 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1430 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1431 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1432 | { | |
c4100eae | 1433 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1434 | "must be length 1 because " |
c4100eae | 1435 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1436 | sym->name, &sym->declared_at, |
1437 | sym->ns->proc_name->name); | |
524af0d6 | 1438 | retval = false; |
aa5e22f0 CR |
1439 | } |
1440 | } | |
1441 | ||
a8b3b0b6 CR |
1442 | /* We have to make sure that any param to a bind(c) routine does |
1443 | not have the allocatable, pointer, or optional attributes, | |
1444 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1445 | if (sym->attr.allocatable == 1 |
286f737c | 1446 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1447 | "ALLOCATABLE attribute in procedure %qs " |
60f6ca95 TB |
1448 | "with BIND(C)", sym->name, |
1449 | &(sym->declared_at), | |
1450 | sym->ns->proc_name->name)) | |
1451 | retval = false; | |
1452 | ||
1453 | if (sym->attr.pointer == 1 | |
286f737c | 1454 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
a4d9b221 | 1455 | "POINTER attribute in procedure %qs " |
60f6ca95 TB |
1456 | "with BIND(C)", sym->name, |
1457 | &(sym->declared_at), | |
1458 | sym->ns->proc_name->name)) | |
1459 | retval = false; | |
1460 | ||
1461 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1462 | { |
c4100eae MLI |
1463 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1464 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1465 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1466 | sym->ns->proc_name->name); |
524af0d6 | 1467 | retval = false; |
a8b3b0b6 CR |
1468 | } |
1469 | ||
2e8d9212 | 1470 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1471 | { |
c4100eae MLI |
1472 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1473 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1474 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1475 | sym->ns->proc_name->name); |
524af0d6 | 1476 | retval = false; |
a8b3b0b6 | 1477 | } |
2e8d9212 | 1478 | else if (sym->attr.optional == 1 |
286f737c | 1479 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
524af0d6 | 1480 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1481 | "procedure %qs which is BIND(C)", |
1482 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1483 | sym->ns->proc_name->name)) |
1484 | retval = false; | |
a8b3b0b6 CR |
1485 | |
1486 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1487 | either assumed size or explicit shape. Deferred shape is already |
1488 | covered by the pointer/allocatable attribute. */ | |
1489 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
286f737c | 1490 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
524af0d6 | 1491 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1492 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1493 | &(sym->declared_at), |
1494 | sym->ns->proc_name->name, | |
524af0d6 JB |
1495 | &(sym->ns->proc_name->declared_at))) |
1496 | retval = false; | |
a8b3b0b6 CR |
1497 | } |
1498 | } | |
1499 | ||
1500 | return retval; | |
1501 | } | |
1502 | ||
1503 | ||
cf2b3c22 | 1504 | |
a8b3b0b6 | 1505 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1506 | |
524af0d6 | 1507 | static bool |
e69afb29 | 1508 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1509 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1510 | { |
1511 | symbol_attribute attr; | |
1512 | gfc_symbol *sym; | |
1e6025b6 | 1513 | int upper; |
bedee914 PT |
1514 | gfc_symtree *st; |
1515 | ||
1516 | /* Symbols in a submodule are host associated from the parent module or | |
1517 | submodules. Therefore, they can be overridden by declarations in the | |
1518 | submodule scope. Deal with this by attaching the existing symbol to | |
1519 | a new symtree and recycling the old symtree with a new symbol... */ | |
1520 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1521 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1522 | && st->n.sym != NULL | |
1523 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1524 | { | |
1525 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1526 | s->n.sym = st->n.sym; | |
1527 | sym = gfc_new_symbol (name, gfc_current_ns); | |
6de9cd9a | 1528 | |
bedee914 PT |
1529 | |
1530 | st->n.sym = sym; | |
1531 | sym->refs++; | |
1532 | gfc_set_sym_referenced (sym); | |
1533 | } | |
1534 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1535 | else if (gfc_get_symbol (name, NULL, &sym)) | |
524af0d6 | 1536 | return false; |
6de9cd9a | 1537 | |
1e6025b6 TK |
1538 | /* Check if the name has already been defined as a type. The |
1539 | first letter of the symtree will be in upper case then. Of | |
1540 | course, this is only necessary if the upper case letter is | |
1541 | actually different. */ | |
1542 | ||
1543 | upper = TOUPPER(name[0]); | |
1544 | if (upper != name[0]) | |
1545 | { | |
1546 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1547 | gfc_symtree *st; | |
1e6025b6 | 1548 | |
025d57f0 MS |
1549 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1550 | strcpy (u_name, name); | |
1e6025b6 TK |
1551 | u_name[0] = upper; |
1552 | ||
1553 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1554 | ||
f6288c24 FR |
1555 | /* STRUCTURE types can alias symbol names */ |
1556 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1557 | { |
1558 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1559 | &st->n.sym->declared_at); | |
1560 | return false; | |
1561 | } | |
1562 | } | |
1563 | ||
66e4ab31 | 1564 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1565 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1566 | && (sym->attr.implicit_type == 0 |
1567 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1568 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1569 | return false; | |
6de9cd9a DN |
1570 | |
1571 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1572 | { |
1573 | sym->ts.u.cl = cl; | |
1574 | sym->ts.deferred = cl_deferred; | |
1575 | } | |
6de9cd9a DN |
1576 | |
1577 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1578 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1579 | return false; | |
6de9cd9a DN |
1580 | *as = NULL; |
1581 | ||
1582 | /* Add attribute to symbol. The copy is so that we can reset the | |
1583 | dimension attribute. */ | |
1584 | attr = current_attr; | |
1585 | attr.dimension = 0; | |
be59db2d | 1586 | attr.codimension = 0; |
6de9cd9a | 1587 | |
524af0d6 JB |
1588 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1589 | return false; | |
6de9cd9a | 1590 | |
a8b3b0b6 CR |
1591 | /* Finish any work that may need to be done for the binding label, |
1592 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1593 | is made, and before the symbol name (for data decls), so the | |
1594 | current_ts is holding the binding label, or nothing if the | |
1595 | name= attr wasn't given. Therefore, test here if we're dealing | |
1596 | with a bind(c) and make sure the binding label is set correctly. */ | |
1597 | if (sym->attr.is_bind_c == 1) | |
1598 | { | |
62603fae | 1599 | if (!sym->binding_label) |
a8b3b0b6 | 1600 | { |
ad4a2f64 TB |
1601 | /* Set the binding label and verify that if a NAME= was specified |
1602 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1603 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1604 | num_idents_on_line)) |
1605 | return false; | |
a8b3b0b6 CR |
1606 | } |
1607 | } | |
1608 | ||
1609 | /* See if we know we're in a common block, and if it's a bind(c) | |
1610 | common then we need to make sure we're an interoperable type. */ | |
1611 | if (sym->attr.in_common == 1) | |
1612 | { | |
1613 | /* Test the common block object. */ | |
1614 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1615 | && sym->ts.is_c_interop != 1) | |
1616 | { | |
4daa149b | 1617 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1618 | "must be declared with a C interoperable " |
4daa149b | 1619 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1620 | sym->name, sym->common_block->name, |
1621 | sym->common_block->name); | |
1622 | gfc_clear_error (); | |
1623 | } | |
1624 | } | |
1625 | ||
9a3db5a3 PT |
1626 | sym->attr.implied_index = 0; |
1627 | ||
5bab4c96 PT |
1628 | /* Use the parameter expressions for a parameterized derived type. */ |
1629 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1630 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1631 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1632 | ||
528622fd | 1633 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1634 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1635 | |
524af0d6 | 1636 | return true; |
6de9cd9a DN |
1637 | } |
1638 | ||
636dff67 | 1639 | |
df7cc9b5 | 1640 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1641 | truncated. If we're inside an array constructor without a typespec, we |
1642 | additionally check that all elements have the same length; check_len -1 | |
1643 | means no checking. */ | |
df7cc9b5 FW |
1644 | |
1645 | void | |
6b271a2e JB |
1646 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1647 | gfc_charlen_t check_len) | |
df7cc9b5 | 1648 | { |
00660189 | 1649 | gfc_char_t *s; |
6b271a2e | 1650 | gfc_charlen_t slen; |
df7cc9b5 | 1651 | |
834e9dbb SK |
1652 | if (expr->ts.type != BT_CHARACTER) |
1653 | return; | |
63af1586 | 1654 | |
b441ae1d SK |
1655 | if (expr->expr_type != EXPR_CONSTANT) |
1656 | { | |
1657 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1658 | return; | |
1659 | } | |
df7cc9b5 FW |
1660 | |
1661 | slen = expr->value.character.length; | |
1662 | if (len != slen) | |
1663 | { | |
00660189 FXC |
1664 | s = gfc_get_wide_string (len + 1); |
1665 | memcpy (s, expr->value.character.string, | |
1666 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1667 | if (len > slen) |
00660189 | 1668 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1669 | |
a96c39ea | 1670 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1671 | gfc_warning_now (OPT_Wcharacter_truncation, |
1672 | "CHARACTER expression at %L is being truncated " | |
6b271a2e JB |
1673 | "(%ld/%ld)", &expr->where, |
1674 | (long) slen, (long) len); | |
2220652d PT |
1675 | |
1676 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1677 | initializers. */ | |
d2848082 DK |
1678 | if (check_len != -1 && slen != check_len |
1679 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d | 1680 | gfc_error_now ("The CHARACTER elements of the array constructor " |
6b271a2e JB |
1681 | "at %L must have the same length (%ld/%ld)", |
1682 | &expr->where, (long) slen, | |
1683 | (long) check_len); | |
2220652d | 1684 | |
150675a8 | 1685 | s[len] = '\0'; |
cede9502 | 1686 | free (expr->value.character.string); |
df7cc9b5 FW |
1687 | expr->value.character.string = s; |
1688 | expr->value.character.length = len; | |
1689 | } | |
1690 | } | |
6de9cd9a | 1691 | |
25d8f0a2 | 1692 | |
d51347f9 | 1693 | /* Function to create and update the enumerator history |
25d8f0a2 | 1694 | using the information passed as arguments. |
d51347f9 TB |
1695 | Pointer "max_enum" is also updated, to point to |
1696 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1697 | |
1698 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1699 | INIT points to its enumerator value. */ |
25d8f0a2 | 1700 | |
d51347f9 | 1701 | static void |
636dff67 | 1702 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1703 | { |
1704 | enumerator_history *new_enum_history; | |
1705 | gcc_assert (sym != NULL && init != NULL); | |
1706 | ||
ece3f663 | 1707 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1708 | |
1709 | new_enum_history->sym = sym; | |
1710 | new_enum_history->initializer = init; | |
1711 | new_enum_history->next = NULL; | |
1712 | ||
1713 | if (enum_history == NULL) | |
1714 | { | |
1715 | enum_history = new_enum_history; | |
1716 | max_enum = enum_history; | |
1717 | } | |
1718 | else | |
1719 | { | |
1720 | new_enum_history->next = enum_history; | |
1721 | enum_history = new_enum_history; | |
1722 | ||
d51347f9 | 1723 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1724 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1725 | max_enum = new_enum_history; |
25d8f0a2 TS |
1726 | } |
1727 | } | |
1728 | ||
1729 | ||
d51347f9 | 1730 | /* Function to free enum kind history. */ |
25d8f0a2 | 1731 | |
d51347f9 | 1732 | void |
636dff67 | 1733 | gfc_free_enum_history (void) |
25d8f0a2 | 1734 | { |
d51347f9 TB |
1735 | enumerator_history *current = enum_history; |
1736 | enumerator_history *next; | |
25d8f0a2 TS |
1737 | |
1738 | while (current != NULL) | |
1739 | { | |
1740 | next = current->next; | |
cede9502 | 1741 | free (current); |
25d8f0a2 TS |
1742 | current = next; |
1743 | } | |
1744 | max_enum = NULL; | |
1745 | enum_history = NULL; | |
1746 | } | |
1747 | ||
1748 | ||
6de9cd9a DN |
1749 | /* Function called by variable_decl() that adds an initialization |
1750 | expression to a symbol. */ | |
1751 | ||
524af0d6 | 1752 | static bool |
66e4ab31 | 1753 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1754 | { |
1755 | symbol_attribute attr; | |
1756 | gfc_symbol *sym; | |
1757 | gfc_expr *init; | |
1758 | ||
1759 | init = *initp; | |
08a6b8e0 | 1760 | if (find_special (name, &sym, false)) |
524af0d6 | 1761 | return false; |
6de9cd9a DN |
1762 | |
1763 | attr = sym->attr; | |
1764 | ||
1765 | /* If this symbol is confirming an implicit parameter type, | |
1766 | then an initialization expression is not allowed. */ | |
1767 | if (attr.flavor == FL_PARAMETER | |
1768 | && sym->value != NULL | |
1769 | && *initp != NULL) | |
1770 | { | |
c4100eae | 1771 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1772 | sym->name); |
524af0d6 | 1773 | return false; |
6de9cd9a DN |
1774 | } |
1775 | ||
1776 | if (init == NULL) | |
1777 | { | |
1778 | /* An initializer is required for PARAMETER declarations. */ | |
1779 | if (attr.flavor == FL_PARAMETER) | |
1780 | { | |
1781 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1782 | return false; |
6de9cd9a DN |
1783 | } |
1784 | } | |
1785 | else | |
1786 | { | |
1787 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1788 | initializer. */ |
6de9cd9a DN |
1789 | if (sym->attr.data) |
1790 | { | |
c4100eae | 1791 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1792 | "appears in a DATA statement", sym->name); |
524af0d6 | 1793 | return false; |
6de9cd9a DN |
1794 | } |
1795 | ||
75d17889 | 1796 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1797 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1798 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1799 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1800 | && !sym->attr.proc_pointer |
524af0d6 JB |
1801 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1802 | return false; | |
6de9cd9a | 1803 | |
bc21d315 | 1804 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1805 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1806 | { |
1807 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1808 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1809 | return false; | |
51b128a0 | 1810 | |
bc21d315 | 1811 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1812 | { |
f622221a | 1813 | gfc_charlen_t clen; |
66e4ab31 SK |
1814 | /* If there are multiple CHARACTER variables declared on the |
1815 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1816 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1817 | |
a99288e5 PT |
1818 | if (sym->attr.flavor == FL_PARAMETER) |
1819 | { | |
1820 | if (init->expr_type == EXPR_CONSTANT) | |
1821 | { | |
1822 | clen = init->value.character.length; | |
b7e75771 | 1823 | sym->ts.u.cl->length |
f622221a | 1824 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1825 | NULL, clen); |
a99288e5 PT |
1826 | } |
1827 | else if (init->expr_type == EXPR_ARRAY) | |
1828 | { | |
c004a341 | 1829 | if (init->ts.u.cl && init->ts.u.cl->length) |
39abef62 LK |
1830 | { |
1831 | const gfc_expr *length = init->ts.u.cl->length; | |
1832 | if (length->expr_type != EXPR_CONSTANT) | |
1833 | { | |
1834 | gfc_error ("Cannot initialize parameter array " | |
1835 | "at %L " | |
1836 | "with variable length elements", | |
1837 | &sym->declared_at); | |
1838 | return false; | |
1839 | } | |
1840 | clen = mpz_get_si (length->value.integer); | |
1841 | } | |
dc0f176a SK |
1842 | else if (init->value.constructor) |
1843 | { | |
1844 | gfc_constructor *c; | |
70112e2a | 1845 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1846 | clen = c->expr->value.character.length; |
1847 | } | |
1848 | else | |
1849 | gcc_unreachable (); | |
b7e75771 | 1850 | sym->ts.u.cl->length |
f622221a | 1851 | = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 1852 | NULL, clen); |
a99288e5 | 1853 | } |
bc21d315 JW |
1854 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1855 | sym->ts.u.cl->length = | |
1856 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1857 | } |
df7cc9b5 FW |
1858 | } |
1859 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1860 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1861 | { |
d30ecc9c SK |
1862 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1863 | return false; | |
1864 | ||
aeb8c028 JJ |
1865 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1866 | false); | |
1867 | /* resolve_charlen will complain later on if the length | |
1868 | is too large. Just skeep the initialization in that case. */ | |
1869 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1870 | gfc_integer_kinds[k].huge) <= 0) | |
df7cc9b5 | 1871 | { |
aeb8c028 JJ |
1872 | HOST_WIDE_INT len |
1873 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1874 | ||
1875 | if (init->expr_type == EXPR_CONSTANT) | |
1876 | gfc_set_constant_character_len (len, init, -1); | |
1877 | else if (init->expr_type == EXPR_ARRAY) | |
1878 | { | |
1879 | gfc_constructor *c; | |
b7e75771 | 1880 | |
aeb8c028 JJ |
1881 | /* Build a new charlen to prevent simplification from |
1882 | deleting the length before it is resolved. */ | |
1883 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1884 | init->ts.u.cl->length | |
1885 | = gfc_copy_expr (sym->ts.u.cl->length); | |
dcdc7b6c | 1886 | |
aeb8c028 JJ |
1887 | for (c = gfc_constructor_first (init->value.constructor); |
1888 | c; c = gfc_constructor_next (c)) | |
1889 | gfc_set_constant_character_len (len, c->expr, -1); | |
1890 | } | |
df7cc9b5 FW |
1891 | } |
1892 | } | |
1893 | } | |
1894 | ||
f5ca06e6 DK |
1895 | /* If sym is implied-shape, set its upper bounds from init. */ |
1896 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1897 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1898 | { | |
1899 | int dim; | |
1900 | ||
1901 | if (init->rank == 0) | |
1902 | { | |
1903 | gfc_error ("Can't initialize implied-shape array at %L" | |
1904 | " with scalar", &sym->declared_at); | |
524af0d6 | 1905 | return false; |
f5ca06e6 | 1906 | } |
f5ca06e6 DK |
1907 | |
1908 | /* Shape should be present, we get an initialization expression. */ | |
1909 | gcc_assert (init->shape); | |
1910 | ||
1911 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1912 | { | |
1913 | int k; | |
cdffe788 | 1914 | gfc_expr *e, *lower; |
f5acf0f2 | 1915 | |
f5ca06e6 | 1916 | lower = sym->as->lower[dim]; |
cdffe788 | 1917 | |
70112e2a | 1918 | /* If the lower bound is an array element from another |
cdffe788 SK |
1919 | parameterized array, then it is marked with EXPR_VARIABLE and |
1920 | is an initialization expression. Try to reduce it. */ | |
1921 | if (lower->expr_type == EXPR_VARIABLE) | |
1922 | gfc_reduce_init_expr (lower); | |
1923 | ||
1924 | if (lower->expr_type == EXPR_CONSTANT) | |
1925 | { | |
1926 | /* All dimensions must be without upper bound. */ | |
1927 | gcc_assert (!sym->as->upper[dim]); | |
1928 | ||
1929 | k = lower->ts.kind; | |
1930 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1931 | mpz_add (e->value.integer, lower->value.integer, | |
1932 | init->shape[dim]); | |
1933 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1934 | sym->as->upper[dim] = e; | |
1935 | } | |
1936 | else | |
f5ca06e6 DK |
1937 | { |
1938 | gfc_error ("Non-constant lower bound in implied-shape" | |
1939 | " declaration at %L", &lower->where); | |
524af0d6 | 1940 | return false; |
f5ca06e6 | 1941 | } |
f5ca06e6 DK |
1942 | } |
1943 | ||
1944 | sym->as->type = AS_EXPLICIT; | |
1945 | } | |
1946 | ||
a8b3b0b6 CR |
1947 | /* Need to check if the expression we initialized this |
1948 | to was one of the iso_c_binding named constants. If so, | |
1949 | and we're a parameter (constant), let it be iso_c. | |
1950 | For example: | |
1951 | integer(c_int), parameter :: my_int = c_int | |
1952 | integer(my_int) :: my_int_2 | |
1953 | If we mark my_int as iso_c (since we can see it's value | |
1954 | is equal to one of the named constants), then my_int_2 | |
1955 | will be considered C interoperable. */ | |
f6288c24 | 1956 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
1957 | { |
1958 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1959 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1960 | /* attr bits needed for module files. */ | |
1961 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1962 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1963 | if (init->ts.is_iso_c) | |
1964 | sym->ts.f90_type = init->ts.f90_type; | |
1965 | } | |
b7e75771 | 1966 | |
6de9cd9a DN |
1967 | /* Add initializer. Make sure we keep the ranks sane. */ |
1968 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1969 | { |
1970 | mpz_t size; | |
1971 | gfc_expr *array; | |
a9b43781 PT |
1972 | int n; |
1973 | if (sym->attr.flavor == FL_PARAMETER | |
1974 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1975 | && spec_size (sym->as, &size) |
a9b43781 PT |
1976 | && mpz_cmp_si (size, 0) > 0) |
1977 | { | |
b7e75771 JD |
1978 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1979 | &init->where); | |
a9b43781 | 1980 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1981 | gfc_constructor_append_expr (&array->value.constructor, |
1982 | n == 0 | |
1983 | ? init | |
1984 | : gfc_copy_expr (init), | |
1985 | &init->where); | |
f5acf0f2 | 1986 | |
a9b43781 PT |
1987 | array->shape = gfc_get_shape (sym->as->rank); |
1988 | for (n = 0; n < sym->as->rank; n++) | |
1989 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1990 | ||
1991 | init = array; | |
1992 | mpz_clear (size); | |
1993 | } | |
1994 | init->rank = sym->as->rank; | |
1995 | } | |
6de9cd9a DN |
1996 | |
1997 | sym->value = init; | |
ef7236d2 DF |
1998 | if (sym->attr.save == SAVE_NONE) |
1999 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
2000 | *initp = NULL; |
2001 | } | |
2002 | ||
524af0d6 | 2003 | return true; |
6de9cd9a DN |
2004 | } |
2005 | ||
2006 | ||
2007 | /* Function called by variable_decl() that adds a name to a structure | |
2008 | being built. */ | |
2009 | ||
524af0d6 | 2010 | static bool |
636dff67 SK |
2011 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2012 | gfc_array_spec **as) | |
6de9cd9a | 2013 | { |
f6288c24 | 2014 | gfc_state_data *s; |
6de9cd9a DN |
2015 | gfc_component *c; |
2016 | ||
619dd721 | 2017 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 2018 | constructing, it must have the pointer attribute. */ |
619dd721 | 2019 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 2020 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
2021 | && current_attr.pointer == 0) |
2022 | { | |
bf9f15ee PT |
2023 | if (current_attr.allocatable |
2024 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2025 | "must have the POINTER attribute")) | |
2026 | { | |
2027 | return false; | |
2028 | } | |
2029 | else if (current_attr.allocatable == 0) | |
2030 | { | |
9cbf8673 JW |
2031 | gfc_error ("Component at %C must have the POINTER attribute"); |
2032 | return false; | |
2033 | } | |
6de9cd9a | 2034 | } |
9cbf8673 JW |
2035 | |
2036 | /* F03:C437. */ | |
2037 | if (current_ts.type == BT_CLASS | |
2038 | && !(current_attr.pointer || current_attr.allocatable)) | |
2039 | { | |
2040 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2041 | "or pointer", name); | |
2042 | return false; | |
bf9f15ee | 2043 | } |
6de9cd9a | 2044 | |
636dff67 | 2045 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
2046 | { |
2047 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2048 | { | |
2049 | gfc_error ("Array component of structure at %C must have explicit " | |
2050 | "or deferred shape"); | |
524af0d6 | 2051 | return false; |
6de9cd9a DN |
2052 | } |
2053 | } | |
2054 | ||
f6288c24 FR |
2055 | /* If we are in a nested union/map definition, gfc_add_component will not |
2056 | properly find repeated components because: | |
6442a6f4 | 2057 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
2058 | and maps are implicity chained so nested components may conflict. |
2059 | (ii) Unions and maps are not linked as components of their parent | |
2060 | structures until after they are parsed. | |
2061 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2062 | we search each block directly from the parse stack until we find the top | |
2063 | level structure. */ | |
2064 | ||
2065 | s = gfc_state_stack; | |
2066 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2067 | { | |
2068 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2069 | { | |
2070 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2071 | if (c != NULL) | |
2072 | { | |
2f029c08 | 2073 | gfc_error_now ("Component %qs at %C already declared at %L", |
f6288c24 FR |
2074 | name, &c->loc); |
2075 | return false; | |
2076 | } | |
2077 | /* Break after we've searched the entire chain. */ | |
2078 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2079 | break; | |
2080 | s = s->previous; | |
2081 | } | |
2082 | } | |
2083 | ||
524af0d6 JB |
2084 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2085 | return false; | |
6de9cd9a DN |
2086 | |
2087 | c->ts = current_ts; | |
bc21d315 JW |
2088 | if (c->ts.type == BT_CHARACTER) |
2089 | c->ts.u.cl = cl; | |
5bab4c96 PT |
2090 | |
2091 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
276515e6 PT |
2092 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2093 | && saved_kind_expr != NULL) | |
5bab4c96 PT |
2094 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2095 | ||
d4b7d0f0 | 2096 | c->attr = current_attr; |
6de9cd9a DN |
2097 | |
2098 | c->initializer = *init; | |
2099 | *init = NULL; | |
2100 | ||
2101 | c->as = *as; | |
2102 | if (c->as != NULL) | |
be59db2d TB |
2103 | { |
2104 | if (c->as->corank) | |
2105 | c->attr.codimension = 1; | |
2106 | if (c->as->rank) | |
2107 | c->attr.dimension = 1; | |
2108 | } | |
6de9cd9a DN |
2109 | *as = NULL; |
2110 | ||
7fc61626 | 2111 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 2112 | |
6de9cd9a | 2113 | /* Check array components. */ |
d4b7d0f0 | 2114 | if (!c->attr.dimension) |
2e23972e | 2115 | goto scalar; |
6de9cd9a | 2116 | |
d4b7d0f0 | 2117 | if (c->attr.pointer) |
6de9cd9a DN |
2118 | { |
2119 | if (c->as->type != AS_DEFERRED) | |
2120 | { | |
5046aff5 PT |
2121 | gfc_error ("Pointer array component of structure at %C must have a " |
2122 | "deferred shape"); | |
a4f15a7d | 2123 | return false; |
5046aff5 PT |
2124 | } |
2125 | } | |
d4b7d0f0 | 2126 | else if (c->attr.allocatable) |
5046aff5 PT |
2127 | { |
2128 | if (c->as->type != AS_DEFERRED) | |
2129 | { | |
2130 | gfc_error ("Allocatable component of structure at %C must have a " | |
2131 | "deferred shape"); | |
a4f15a7d | 2132 | return false; |
6de9cd9a DN |
2133 | } |
2134 | } | |
2135 | else | |
2136 | { | |
2137 | if (c->as->type != AS_EXPLICIT) | |
2138 | { | |
636dff67 SK |
2139 | gfc_error ("Array component of structure at %C must have an " |
2140 | "explicit shape"); | |
a4f15a7d | 2141 | return false; |
6de9cd9a DN |
2142 | } |
2143 | } | |
2144 | ||
2e23972e JW |
2145 | scalar: |
2146 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 2147 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 2148 | |
5bab4c96 PT |
2149 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2150 | { | |
2151 | gfc_symbol *sym; | |
2152 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2153 | 0, &sym); | |
2154 | if (sym == NULL) | |
2155 | { | |
2156 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2157 | "in the type parameter name list at %L", | |
2158 | c->name, &gfc_current_block ()->declared_at); | |
2159 | return false; | |
2160 | } | |
2161 | sym->ts = c->ts; | |
2162 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2163 | sym->attr.pdt_len = c->attr.pdt_len; | |
2164 | if (c->initializer) | |
2165 | sym->value = gfc_copy_expr (c->initializer); | |
2166 | sym->attr.flavor = FL_VARIABLE; | |
2167 | } | |
2168 | ||
2169 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2170 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2171 | && decl_type_param_list) | |
2172 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2173 | ||
a4f15a7d | 2174 | return true; |
6de9cd9a DN |
2175 | } |
2176 | ||
2177 | ||
2178 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2179 | ||
2180 | match | |
636dff67 | 2181 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
2182 | { |
2183 | gfc_symbol *sym; | |
576f6da6 | 2184 | match m, m2 = MATCH_NO; |
6de9cd9a | 2185 | |
576f6da6 TB |
2186 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2187 | return MATCH_ERROR; | |
2188 | ||
2189 | if (m == MATCH_NO) | |
2190 | { | |
2191 | locus old_loc; | |
2192 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2193 | ||
94241120 | 2194 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2195 | return m2; |
2196 | ||
2197 | old_loc = gfc_current_locus; | |
2198 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2199 | return MATCH_ERROR; | |
2200 | if (m2 != MATCH_YES | |
2201 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2202 | return MATCH_ERROR; | |
2203 | if (m2 == MATCH_NO) | |
2204 | { | |
2205 | gfc_current_locus = old_loc; | |
2206 | return MATCH_NO; | |
2207 | } | |
2208 | } | |
6de9cd9a DN |
2209 | |
2210 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2211 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2212 | { | |
2213 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2214 | return MATCH_ERROR; | |
2215 | } | |
2216 | ||
2217 | gfc_intrinsic_symbol (sym); | |
2218 | ||
2219 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2220 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2221 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2222 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2223 | return MATCH_ERROR; |
2224 | ||
b7e75771 | 2225 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2226 | |
576f6da6 TB |
2227 | /* Invalid per F2008, C512. */ |
2228 | if (m2 == MATCH_YES) | |
2229 | { | |
2230 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2231 | return MATCH_ERROR; | |
2232 | } | |
2233 | ||
6de9cd9a DN |
2234 | return MATCH_YES; |
2235 | } | |
2236 | ||
2237 | ||
80f95228 JW |
2238 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2239 | ||
2240 | static match | |
2241 | match_pointer_init (gfc_expr **init, int procptr) | |
2242 | { | |
2243 | match m; | |
2244 | ||
f6288c24 | 2245 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2246 | { |
2247 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2248 | "a PURE procedure"); | |
2249 | return MATCH_ERROR; | |
2250 | } | |
ccd7751b | 2251 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2252 | |
eea58adb | 2253 | /* Match NULL() initialization. */ |
80f95228 JW |
2254 | m = gfc_match_null (init); |
2255 | if (m != MATCH_NO) | |
2256 | return m; | |
2257 | ||
2258 | /* Match non-NULL initialization. */ | |
837c4b78 | 2259 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2260 | gfc_matching_procptr_assignment = procptr; |
2261 | m = gfc_match_rvalue (init); | |
837c4b78 | 2262 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2263 | gfc_matching_procptr_assignment = 0; |
2264 | if (m == MATCH_ERROR) | |
2265 | return MATCH_ERROR; | |
2266 | else if (m == MATCH_NO) | |
2267 | { | |
2268 | gfc_error ("Error in pointer initialization at %C"); | |
2269 | return MATCH_ERROR; | |
2270 | } | |
2271 | ||
dc9a54fa JW |
2272 | if (!procptr && !gfc_resolve_expr (*init)) |
2273 | return MATCH_ERROR; | |
f5acf0f2 | 2274 | |
524af0d6 JB |
2275 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2276 | "initialization at %C")) | |
80f95228 JW |
2277 | return MATCH_ERROR; |
2278 | ||
2279 | return MATCH_YES; | |
2280 | } | |
2281 | ||
2282 | ||
524af0d6 | 2283 | static bool |
bb9de0c4 JW |
2284 | check_function_name (char *name) |
2285 | { | |
2286 | /* In functions that have a RESULT variable defined, the function name always | |
2287 | refers to function calls. Therefore, the name is not allowed to appear in | |
2288 | specification statements. When checking this, be careful about | |
2289 | 'hidden' procedure pointer results ('ppr@'). */ | |
2290 | ||
2291 | if (gfc_current_state () == COMP_FUNCTION) | |
2292 | { | |
2293 | gfc_symbol *block = gfc_current_block (); | |
2294 | if (block && block->result && block->result != block | |
2295 | && strcmp (block->result->name, "ppr@") != 0 | |
2296 | && strcmp (block->name, name) == 0) | |
2297 | { | |
ba77f7ba SK |
2298 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2299 | "from appearing in a specification statement", | |
2300 | block->result->name, &block->result->declared_at, name); | |
524af0d6 | 2301 | return false; |
bb9de0c4 JW |
2302 | } |
2303 | } | |
2304 | ||
524af0d6 | 2305 | return true; |
bb9de0c4 JW |
2306 | } |
2307 | ||
2308 | ||
6de9cd9a DN |
2309 | /* Match a variable name with an optional initializer. When this |
2310 | subroutine is called, a variable is expected to be parsed next. | |
2311 | Depending on what is happening at the moment, updates either the | |
2312 | symbol table or the current interface. */ | |
2313 | ||
2314 | static match | |
949d5b72 | 2315 | variable_decl (int elem) |
6de9cd9a DN |
2316 | { |
2317 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6f855a26 | 2318 | static unsigned int fill_id = 0; |
6de9cd9a DN |
2319 | gfc_expr *initializer, *char_len; |
2320 | gfc_array_spec *as; | |
83d890b9 | 2321 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2322 | gfc_charlen *cl; |
e69afb29 | 2323 | bool cl_deferred; |
6de9cd9a DN |
2324 | locus var_locus; |
2325 | match m; | |
524af0d6 | 2326 | bool t; |
83d890b9 | 2327 | gfc_symbol *sym; |
6de9cd9a DN |
2328 | |
2329 | initializer = NULL; | |
2330 | as = NULL; | |
83d890b9 | 2331 | cp_as = NULL; |
6de9cd9a DN |
2332 | |
2333 | /* When we get here, we've just matched a list of attributes and | |
2334 | maybe a type and a double colon. The next thing we expect to see | |
2335 | is the name of the symbol. */ | |
6f855a26 FR |
2336 | |
2337 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2338 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2339 | m = MATCH_NO; | |
2340 | gfc_gobble_whitespace (); | |
2341 | if (gfc_peek_ascii_char () == '%') | |
2342 | { | |
2343 | gfc_next_ascii_char (); | |
2344 | m = gfc_match ("fill"); | |
2345 | } | |
2346 | ||
6de9cd9a | 2347 | if (m != MATCH_YES) |
6f855a26 FR |
2348 | { |
2349 | m = gfc_match_name (name); | |
2350 | if (m != MATCH_YES) | |
2351 | goto cleanup; | |
2352 | } | |
2353 | ||
2354 | else | |
2355 | { | |
2356 | m = MATCH_ERROR; | |
2357 | if (gfc_current_state () != COMP_STRUCTURE) | |
2358 | { | |
2359 | if (flag_dec_structure) | |
2360 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2361 | else | |
2362 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2363 | "%<-fdec-structure%>", "%FILL"); | |
2364 | goto cleanup; | |
2365 | } | |
2366 | ||
2367 | if (attr_seen) | |
2368 | { | |
2369 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2370 | goto cleanup; | |
2371 | } | |
2372 | ||
2373 | /* %FILL components are given invalid fortran names. */ | |
2374 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2375 | m = MATCH_YES; | |
2376 | } | |
6de9cd9a | 2377 | |
63645982 | 2378 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2379 | |
2380 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2381 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2382 | if (m == MATCH_ERROR) |
6de9cd9a | 2383 | goto cleanup; |
25d8f0a2 | 2384 | |
6de9cd9a DN |
2385 | if (m == MATCH_NO) |
2386 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2387 | else if (current_as |
524af0d6 | 2388 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2389 | { |
2390 | m = MATCH_ERROR; | |
2391 | goto cleanup; | |
2392 | } | |
6de9cd9a | 2393 | |
c61819ff | 2394 | if (flag_cray_pointer) |
11126dc0 AL |
2395 | cp_as = gfc_copy_array_spec (as); |
2396 | ||
f5ca06e6 DK |
2397 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2398 | determine (and check) whether it can be implied-shape. If it | |
2399 | was parsed as assumed-size, change it because PARAMETERs can not | |
09ef33c1 SK |
2400 | be assumed-size. |
2401 | ||
2402 | An explicit-shape-array cannot appear under several conditions. | |
2403 | That check is done here as well. */ | |
f5ca06e6 DK |
2404 | if (as) |
2405 | { | |
2406 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2407 | { | |
2408 | m = MATCH_ERROR; | |
c4100eae | 2409 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2410 | name, &var_locus); |
2411 | goto cleanup; | |
2412 | } | |
2413 | ||
2414 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2415 | && current_attr.flavor == FL_PARAMETER) | |
2416 | as->type = AS_IMPLIED_SHAPE; | |
2417 | ||
2418 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2419 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2420 | &var_locus)) |
f5ca06e6 DK |
2421 | { |
2422 | m = MATCH_ERROR; | |
2423 | goto cleanup; | |
2424 | } | |
09ef33c1 SK |
2425 | |
2426 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2427 | constant expressions shall appear only in a subprogram, derived | |
2428 | type definition, BLOCK construct, or interface body. */ | |
2429 | if (as->type == AS_EXPLICIT | |
2430 | && gfc_current_state () != COMP_BLOCK | |
2431 | && gfc_current_state () != COMP_DERIVED | |
2432 | && gfc_current_state () != COMP_FUNCTION | |
2433 | && gfc_current_state () != COMP_INTERFACE | |
2434 | && gfc_current_state () != COMP_SUBROUTINE) | |
2435 | { | |
2436 | gfc_expr *e; | |
2437 | bool not_constant = false; | |
2438 | ||
2439 | for (int i = 0; i < as->rank; i++) | |
2440 | { | |
2441 | e = gfc_copy_expr (as->lower[i]); | |
2442 | gfc_resolve_expr (e); | |
2443 | gfc_simplify_expr (e, 0); | |
2444 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2445 | { | |
2446 | not_constant = true; | |
2447 | break; | |
2448 | } | |
2449 | gfc_free_expr (e); | |
2450 | ||
2451 | e = gfc_copy_expr (as->upper[i]); | |
2452 | gfc_resolve_expr (e); | |
2453 | gfc_simplify_expr (e, 0); | |
2454 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2455 | { | |
2456 | not_constant = true; | |
2457 | break; | |
2458 | } | |
2459 | gfc_free_expr (e); | |
2460 | } | |
2461 | ||
2462 | if (not_constant) | |
5b9a3332 | 2463 | { |
09ef33c1 SK |
2464 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2465 | m = MATCH_ERROR; | |
2466 | goto cleanup; | |
2467 | } | |
2468 | } | |
078c5aff TK |
2469 | if (as->type == AS_EXPLICIT) |
2470 | { | |
2471 | for (int i = 0; i < as->rank; i++) | |
2472 | { | |
2473 | gfc_expr *e, *n; | |
2474 | e = as->lower[i]; | |
2475 | if (e->expr_type != EXPR_CONSTANT) | |
2476 | { | |
2477 | n = gfc_copy_expr (e); | |
2478 | gfc_simplify_expr (n, 1); | |
2479 | if (n->expr_type == EXPR_CONSTANT) | |
2480 | gfc_replace_expr (e, n); | |
2481 | else | |
2482 | gfc_free_expr (n); | |
2483 | } | |
2484 | e = as->upper[i]; | |
2485 | if (e->expr_type != EXPR_CONSTANT) | |
2486 | { | |
2487 | n = gfc_copy_expr (e); | |
2488 | gfc_simplify_expr (n, 1); | |
2489 | if (n->expr_type == EXPR_CONSTANT) | |
2490 | gfc_replace_expr (e, n); | |
2491 | else | |
2492 | gfc_free_expr (n); | |
2493 | } | |
2494 | } | |
2495 | } | |
f5ca06e6 DK |
2496 | } |
2497 | ||
6de9cd9a DN |
2498 | char_len = NULL; |
2499 | cl = NULL; | |
e69afb29 | 2500 | cl_deferred = false; |
6de9cd9a DN |
2501 | |
2502 | if (current_ts.type == BT_CHARACTER) | |
2503 | { | |
2767f2cc | 2504 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2505 | { |
2506 | case MATCH_YES: | |
b76e28c6 | 2507 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2508 | |
2509 | cl->length = char_len; | |
2510 | break; | |
2511 | ||
949d5b72 | 2512 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2513 | element. Also copy assumed lengths. */ |
6de9cd9a | 2514 | case MATCH_NO: |
9b21a380 | 2515 | if (elem > 1 |
bc21d315 JW |
2516 | && (current_ts.u.cl->length == NULL |
2517 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2518 | { |
b76e28c6 | 2519 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2520 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2521 | } |
2522 | else | |
bc21d315 | 2523 | cl = current_ts.u.cl; |
949d5b72 | 2524 | |
e69afb29 SK |
2525 | cl_deferred = current_ts.deferred; |
2526 | ||
6de9cd9a DN |
2527 | break; |
2528 | ||
2529 | case MATCH_ERROR: | |
2530 | goto cleanup; | |
2531 | } | |
2532 | } | |
2533 | ||
4668d6f9 PT |
2534 | /* The dummy arguments and result of the abreviated form of MODULE |
2535 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2536 | if (gfc_current_ns->proc_name | |
2537 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2538 | { | |
2539 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2540 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2541 | { | |
2542 | m = MATCH_ERROR; | |
811582ec | 2543 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2544 | "in the corresponding interface for MODULE " |
811582ec | 2545 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2546 | gfc_current_ns->proc_name->name); |
2547 | goto cleanup; | |
2548 | } | |
2549 | } | |
2550 | ||
6f855a26 | 2551 | /* %FILL components may not have initializers. */ |
2eb3745a | 2552 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
6f855a26 FR |
2553 | { |
2554 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2555 | m = MATCH_ERROR; | |
2556 | goto cleanup; | |
2557 | } | |
2558 | ||
83d890b9 | 2559 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2560 | and this is not a component declaration, |
66e4ab31 | 2561 | then we want to set the type & bail out. */ |
f6288c24 | 2562 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2563 | { |
2564 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2565 | if (sym != NULL && sym->attr.cray_pointee) | |
2566 | { | |
83d890b9 | 2567 | m = MATCH_YES; |
5b9a3332 PT |
2568 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2569 | { | |
2570 | m = MATCH_ERROR; | |
2571 | goto cleanup; | |
2572 | } | |
f5acf0f2 | 2573 | |
83d890b9 AL |
2574 | /* Check to see if we have an array specification. */ |
2575 | if (cp_as != NULL) | |
2576 | { | |
2577 | if (sym->as != NULL) | |
2578 | { | |
e25a0da3 | 2579 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2580 | gfc_free_array_spec (cp_as); |
2581 | m = MATCH_ERROR; | |
2582 | goto cleanup; | |
2583 | } | |
2584 | else | |
2585 | { | |
524af0d6 | 2586 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2587 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2588 | |
83d890b9 | 2589 | /* Fix the array spec. */ |
d51347f9 | 2590 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2591 | if (m == MATCH_ERROR) |
2592 | goto cleanup; | |
2593 | } | |
d51347f9 | 2594 | } |
83d890b9 AL |
2595 | goto cleanup; |
2596 | } | |
2597 | else | |
2598 | { | |
2599 | gfc_free_array_spec (cp_as); | |
2600 | } | |
2601 | } | |
d51347f9 | 2602 | |
3070bab4 JW |
2603 | /* Procedure pointer as function result. */ |
2604 | if (gfc_current_state () == COMP_FUNCTION | |
2605 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2606 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2607 | strcpy (name, "ppr@"); | |
2608 | ||
2609 | if (gfc_current_state () == COMP_FUNCTION | |
2610 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2611 | && gfc_current_block ()->result | |
2612 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2613 | strcpy (name, "ppr@"); | |
d51347f9 | 2614 | |
6de9cd9a DN |
2615 | /* OK, we've successfully matched the declaration. Now put the |
2616 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2617 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2618 | perfectly legal: |
2619 | ||
2620 | integer, parameter :: i = huge(i) | |
2621 | ||
2622 | This is only true for parameters or variables of a basic type. | |
2623 | For components of derived types, it is not true, so we don't | |
2624 | create a symbol for those yet. If we fail to create the symbol, | |
2625 | bail out. */ | |
f6288c24 | 2626 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2627 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2628 | { |
72af9f0b PT |
2629 | m = MATCH_ERROR; |
2630 | goto cleanup; | |
2631 | } | |
2632 | ||
524af0d6 | 2633 | if (!check_function_name (name)) |
6de9cd9a | 2634 | { |
6de9cd9a DN |
2635 | m = MATCH_ERROR; |
2636 | goto cleanup; | |
2637 | } | |
2638 | ||
294fbfc8 TS |
2639 | /* We allow old-style initializations of the form |
2640 | integer i /2/, j(4) /3*3, 1/ | |
2641 | (if no colon has been seen). These are different from data | |
2642 | statements in that initializers are only allowed to apply to the | |
2643 | variable immediately preceding, i.e. | |
2644 | integer i, j /1, 2/ | |
2645 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2646 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2647 | |
2648 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2649 | { | |
524af0d6 JB |
2650 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2651 | "initialization at %C")) | |
294fbfc8 | 2652 | return MATCH_ERROR; |
f6288c24 FR |
2653 | |
2654 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2655 | but not components of derived types. */ | |
b18f1efc JJ |
2656 | else if (gfc_current_state () == COMP_DERIVED) |
2657 | { | |
2658 | gfc_error ("Invalid old style initialization for derived type " | |
2659 | "component at %C"); | |
2660 | m = MATCH_ERROR; | |
2661 | goto cleanup; | |
2662 | } | |
f5acf0f2 | 2663 | |
f6288c24 FR |
2664 | /* For structure components, read the initializer as a special |
2665 | expression and let the rest of this function apply the initializer | |
2666 | as usual. */ | |
2667 | else if (gfc_comp_struct (gfc_current_state ())) | |
2668 | { | |
2669 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2670 | if (m == MATCH_NO) | |
2671 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2672 | name); | |
2673 | if (m != MATCH_YES) | |
2674 | goto cleanup; | |
2675 | } | |
2676 | ||
2677 | /* Otherwise we treat the old style initialization just like a | |
2678 | DATA declaration for the current variable. */ | |
2679 | else | |
2680 | return match_old_style_init (name); | |
294fbfc8 TS |
2681 | } |
2682 | ||
6de9cd9a DN |
2683 | /* The double colon must be present in order to have initializers. |
2684 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2685 | if (colon_seen) | |
2686 | { | |
2687 | if (gfc_match (" =>") == MATCH_YES) | |
2688 | { | |
6de9cd9a DN |
2689 | if (!current_attr.pointer) |
2690 | { | |
2691 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2692 | m = MATCH_ERROR; | |
2693 | goto cleanup; | |
2694 | } | |
2695 | ||
80f95228 | 2696 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2697 | if (m != MATCH_YES) |
2698 | goto cleanup; | |
6de9cd9a DN |
2699 | } |
2700 | else if (gfc_match_char ('=') == MATCH_YES) | |
2701 | { | |
2702 | if (current_attr.pointer) | |
2703 | { | |
a4d9b221 TB |
2704 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2705 | "not %<=%>"); | |
6de9cd9a DN |
2706 | m = MATCH_ERROR; |
2707 | goto cleanup; | |
2708 | } | |
2709 | ||
2710 | m = gfc_match_init_expr (&initializer); | |
2711 | if (m == MATCH_NO) | |
2712 | { | |
2713 | gfc_error ("Expected an initialization expression at %C"); | |
2714 | m = MATCH_ERROR; | |
2715 | } | |
2716 | ||
ade20620 | 2717 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2718 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2719 | { |
636dff67 SK |
2720 | gfc_error ("Initialization of variable at %C is not allowed in " |
2721 | "a PURE procedure"); | |
6de9cd9a DN |
2722 | m = MATCH_ERROR; |
2723 | } | |
2724 | ||
ccd7751b | 2725 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2726 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2727 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2728 | ||
6de9cd9a DN |
2729 | if (m != MATCH_YES) |
2730 | goto cleanup; | |
2731 | } | |
cb44ab82 VL |
2732 | } |
2733 | ||
5046aff5 | 2734 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2735 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2736 | { |
636dff67 SK |
2737 | gfc_error ("Initialization of allocatable component at %C is not " |
2738 | "allowed"); | |
5046aff5 PT |
2739 | m = MATCH_ERROR; |
2740 | goto cleanup; | |
2741 | } | |
2742 | ||
18a4e7e3 PT |
2743 | if (gfc_current_state () == COMP_DERIVED |
2744 | && gfc_current_block ()->attr.pdt_template) | |
2745 | { | |
2746 | gfc_symbol *param; | |
2747 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2748 | 0, ¶m); | |
2749 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2750 | { | |
2751 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2752 | "not appear in the type parameter list at %L", | |
2753 | &gfc_current_block ()->declared_at); | |
2754 | m = MATCH_ERROR; | |
2755 | goto cleanup; | |
2756 | } | |
2757 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2758 | { | |
2759 | gfc_error ("The component at %C that appears in the type parameter " | |
2760 | "list at %L has neither the KIND nor LEN attribute", | |
2761 | &gfc_current_block ()->declared_at); | |
2762 | m = MATCH_ERROR; | |
2763 | goto cleanup; | |
2764 | } | |
2765 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2766 | { | |
2767 | gfc_error ("The component at %C which is a type parameter must be " | |
2768 | "a scalar"); | |
2769 | m = MATCH_ERROR; | |
2770 | goto cleanup; | |
2771 | } | |
2772 | else if (param && initializer) | |
2773 | param->value = gfc_copy_expr (initializer); | |
2774 | } | |
2775 | ||
54b4ba60 | 2776 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2777 | NULL here, because we sometimes also need to check if a |
2778 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2779 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2780 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2781 | else | |
54b4ba60 | 2782 | { |
5046aff5 | 2783 | if (current_ts.type == BT_DERIVED |
636dff67 | 2784 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2785 | initializer = gfc_default_initializer (¤t_ts); |
2786 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2787 | |
2788 | /* If we match a nested structure definition we expect to see the | |
2789 | * body even if the variable declarations blow up, so we need to keep | |
2790 | * the structure declaration around. */ | |
2791 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2792 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2793 | } |
6de9cd9a | 2794 | |
524af0d6 | 2795 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2796 | |
2797 | cleanup: | |
2798 | /* Free stuff up and return. */ | |
2799 | gfc_free_expr (initializer); | |
2800 | gfc_free_array_spec (as); | |
2801 | ||
2802 | return m; | |
2803 | } | |
2804 | ||
2805 | ||
b2b81a3f BM |
2806 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2807 | This assumes that the byte size is equal to the kind number for | |
2808 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2809 | |
2810 | match | |
636dff67 | 2811 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2812 | { |
2813 | match m; | |
5cf54585 | 2814 | int original_kind; |
6de9cd9a DN |
2815 | |
2816 | if (gfc_match_char ('*') != MATCH_YES) | |
2817 | return MATCH_NO; | |
2818 | ||
5cf54585 | 2819 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2820 | if (m != MATCH_YES) |
2821 | return MATCH_ERROR; | |
2822 | ||
e45b3c75 ES |
2823 | original_kind = ts->kind; |
2824 | ||
6de9cd9a | 2825 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2826 | if (ts->type == BT_COMPLEX) |
2827 | { | |
2828 | if (ts->kind % 2) | |
636dff67 SK |
2829 | { |
2830 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2831 | gfc_basic_typename (ts->type), original_kind); | |
2832 | return MATCH_ERROR; | |
2833 | } | |
e45b3c75 | 2834 | ts->kind /= 2; |
f4347334 ZG |
2835 | |
2836 | } | |
2837 | ||
203c7ebf | 2838 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2839 | ts->kind = 8; |
2840 | ||
2841 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2842 | { | |
2843 | if (ts->kind == 4) | |
2844 | { | |
203c7ebf | 2845 | if (flag_real4_kind == 8) |
f4347334 | 2846 | ts->kind = 8; |
203c7ebf | 2847 | if (flag_real4_kind == 10) |
f4347334 | 2848 | ts->kind = 10; |
203c7ebf | 2849 | if (flag_real4_kind == 16) |
f4347334 ZG |
2850 | ts->kind = 16; |
2851 | } | |
2852 | ||
2853 | if (ts->kind == 8) | |
2854 | { | |
203c7ebf | 2855 | if (flag_real8_kind == 4) |
f4347334 | 2856 | ts->kind = 4; |
203c7ebf | 2857 | if (flag_real8_kind == 10) |
f4347334 | 2858 | ts->kind = 10; |
203c7ebf | 2859 | if (flag_real8_kind == 16) |
f4347334 ZG |
2860 | ts->kind = 16; |
2861 | } | |
e45b3c75 | 2862 | } |
6de9cd9a | 2863 | |
e7a2d5fb | 2864 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2865 | { |
e45b3c75 | 2866 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2867 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2868 | return MATCH_ERROR; |
2869 | } | |
2870 | ||
70112e2a PT |
2871 | if (!gfc_notify_std (GFC_STD_GNU, |
2872 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2873 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2874 | return MATCH_ERROR; |
2875 | ||
6de9cd9a DN |
2876 | return MATCH_YES; |
2877 | } | |
2878 | ||
2879 | ||
2880 | /* Match a kind specification. Since kinds are generally optional, we | |
2881 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2882 | string is found, then we know we have an error. */ | |
2883 | ||
2884 | match | |
e2d29968 | 2885 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2886 | { |
e2d29968 | 2887 | locus where, loc; |
6de9cd9a DN |
2888 | gfc_expr *e; |
2889 | match m, n; | |
96ee3a4a | 2890 | char c; |
6de9cd9a DN |
2891 | |
2892 | m = MATCH_NO; | |
e2d29968 | 2893 | n = MATCH_YES; |
6de9cd9a | 2894 | e = NULL; |
5bab4c96 | 2895 | saved_kind_expr = NULL; |
6de9cd9a | 2896 | |
e2d29968 PT |
2897 | where = loc = gfc_current_locus; |
2898 | ||
2899 | if (kind_expr_only) | |
2900 | goto kind_expr; | |
6de9cd9a DN |
2901 | |
2902 | if (gfc_match_char ('(') == MATCH_NO) | |
2903 | return MATCH_NO; | |
2904 | ||
2905 | /* Also gobbles optional text. */ | |
2906 | if (gfc_match (" kind = ") == MATCH_YES) | |
2907 | m = MATCH_ERROR; | |
2908 | ||
e2d29968 PT |
2909 | loc = gfc_current_locus; |
2910 | ||
2911 | kind_expr: | |
5bab4c96 | 2912 | |
6de9cd9a | 2913 | n = gfc_match_init_expr (&e); |
e2d29968 | 2914 | |
5bab4c96 PT |
2915 | if (gfc_derived_parameter_expr (e)) |
2916 | { | |
2917 | ts->kind = 0; | |
2918 | saved_kind_expr = gfc_copy_expr (e); | |
2919 | goto close_brackets; | |
2920 | } | |
2921 | ||
6de9cd9a | 2922 | if (n != MATCH_YES) |
e2d29968 | 2923 | { |
1c8bcdf7 | 2924 | if (gfc_matching_function) |
e2d29968 | 2925 | { |
f5acf0f2 | 2926 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2927 | imported parameters and try again after the specification |
2928 | expressions..... */ | |
e2d29968 PT |
2929 | if (gfc_match_char (')') != MATCH_YES) |
2930 | { | |
2931 | gfc_error ("Missing right parenthesis at %C"); | |
2932 | m = MATCH_ERROR; | |
2933 | goto no_match; | |
2934 | } | |
2935 | ||
2936 | gfc_free_expr (e); | |
e2d29968 PT |
2937 | gfc_undo_symbols (); |
2938 | return MATCH_YES; | |
2939 | } | |
2940 | else | |
2941 | { | |
2942 | /* ....or else, the match is real. */ | |
2943 | if (n == MATCH_NO) | |
2944 | gfc_error ("Expected initialization expression at %C"); | |
2945 | if (n != MATCH_YES) | |
2946 | return MATCH_ERROR; | |
2947 | } | |
2948 | } | |
6de9cd9a DN |
2949 | |
2950 | if (e->rank != 0) | |
2951 | { | |
2952 | gfc_error ("Expected scalar initialization expression at %C"); | |
2953 | m = MATCH_ERROR; | |
2954 | goto no_match; | |
2955 | } | |
2956 | ||
51f03c6b | 2957 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 2958 | { |
6de9cd9a DN |
2959 | m = MATCH_ERROR; |
2960 | goto no_match; | |
2961 | } | |
2962 | ||
a8b3b0b6 CR |
2963 | /* Before throwing away the expression, let's see if we had a |
2964 | C interoperable kind (and store the fact). */ | |
2965 | if (e->ts.is_c_interop == 1) | |
2966 | { | |
eea58adb | 2967 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2968 | of the named constants from iso_c_binding. */ |
2969 | ts->is_c_interop = e->ts.is_iso_c; | |
2970 | ts->f90_type = e->ts.f90_type; | |
e655a6cc TK |
2971 | if (e->symtree) |
2972 | ts->interop_kind = e->symtree->n.sym; | |
a8b3b0b6 | 2973 | } |
f5acf0f2 | 2974 | |
6de9cd9a DN |
2975 | gfc_free_expr (e); |
2976 | e = NULL; | |
2977 | ||
a8b3b0b6 CR |
2978 | /* Ignore errors to this point, if we've gotten here. This means |
2979 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2980 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2981 | { |
2982 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2983 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2984 | gfc_current_locus = where; |
2985 | return MATCH_ERROR; | |
6de9cd9a | 2986 | } |
96ee3a4a | 2987 | |
2ec855f1 TB |
2988 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2989 | if, e.g., c_double is used for COMPLEX as the standard | |
2990 | explicitly says that the kind type parameter for complex and real | |
2991 | variable is the same, i.e. c_float == c_float_complex. */ | |
2992 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2993 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2994 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2995 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2996 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2997 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2998 | |
5bab4c96 PT |
2999 | close_brackets: |
3000 | ||
96ee3a4a | 3001 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
3002 | if ((c = gfc_next_ascii_char ()) != ')' |
3003 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 3004 | { |
96ee3a4a TB |
3005 | if (ts->type == BT_CHARACTER) |
3006 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3007 | else | |
3008 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 3009 | m = MATCH_ERROR; |
6de9cd9a | 3010 | } |
a8b3b0b6 CR |
3011 | else |
3012 | /* All tests passed. */ | |
3013 | m = MATCH_YES; | |
6de9cd9a | 3014 | |
a8b3b0b6 CR |
3015 | if(m == MATCH_ERROR) |
3016 | gfc_current_locus = where; | |
f4347334 | 3017 | |
203c7ebf | 3018 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
3019 | ts->kind = 8; |
3020 | ||
3021 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3022 | { | |
3023 | if (ts->kind == 4) | |
3024 | { | |
203c7ebf | 3025 | if (flag_real4_kind == 8) |
f4347334 | 3026 | ts->kind = 8; |
203c7ebf | 3027 | if (flag_real4_kind == 10) |
f4347334 | 3028 | ts->kind = 10; |
203c7ebf | 3029 | if (flag_real4_kind == 16) |
f4347334 ZG |
3030 | ts->kind = 16; |
3031 | } | |
3032 | ||
3033 | if (ts->kind == 8) | |
3034 | { | |
203c7ebf | 3035 | if (flag_real8_kind == 4) |
f4347334 | 3036 | ts->kind = 4; |
203c7ebf | 3037 | if (flag_real8_kind == 10) |
f4347334 | 3038 | ts->kind = 10; |
203c7ebf | 3039 | if (flag_real8_kind == 16) |
f4347334 ZG |
3040 | ts->kind = 16; |
3041 | } | |
3042 | } | |
3043 | ||
a8b3b0b6 CR |
3044 | /* Return what we know from the test(s). */ |
3045 | return m; | |
6de9cd9a DN |
3046 | |
3047 | no_match: | |
3048 | gfc_free_expr (e); | |
63645982 | 3049 | gfc_current_locus = where; |
6de9cd9a DN |
3050 | return m; |
3051 | } | |
3052 | ||
3053 | ||
187de1ed FXC |
3054 | static match |
3055 | match_char_kind (int * kind, int * is_iso_c) | |
3056 | { | |
3057 | locus where; | |
3058 | gfc_expr *e; | |
3059 | match m, n; | |
51f03c6b | 3060 | bool fail; |
187de1ed FXC |
3061 | |
3062 | m = MATCH_NO; | |
3063 | e = NULL; | |
3064 | where = gfc_current_locus; | |
3065 | ||
3066 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 3067 | |
1c8bcdf7 | 3068 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 3069 | { |
1c8bcdf7 | 3070 | /* The expression might include use-associated or imported |
f5acf0f2 | 3071 | parameters and try again after the specification |
1c8bcdf7 | 3072 | expressions. */ |
96ee3a4a | 3073 | gfc_free_expr (e); |
96ee3a4a TB |
3074 | gfc_undo_symbols (); |
3075 | return MATCH_YES; | |
3076 | } | |
3077 | ||
187de1ed FXC |
3078 | if (n == MATCH_NO) |
3079 | gfc_error ("Expected initialization expression at %C"); | |
3080 | if (n != MATCH_YES) | |
3081 | return MATCH_ERROR; | |
3082 | ||
3083 | if (e->rank != 0) | |
3084 | { | |
3085 | gfc_error ("Expected scalar initialization expression at %C"); | |
3086 | m = MATCH_ERROR; | |
3087 | goto no_match; | |
3088 | } | |
3089 | ||
87f3a5cf PT |
3090 | if (gfc_derived_parameter_expr (e)) |
3091 | { | |
3092 | saved_kind_expr = e; | |
3093 | *kind = 0; | |
3094 | return MATCH_YES; | |
3095 | } | |
3096 | ||
51f03c6b | 3097 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 3098 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 3099 | if (fail) |
187de1ed | 3100 | { |
187de1ed FXC |
3101 | m = MATCH_ERROR; |
3102 | goto no_match; | |
3103 | } | |
3104 | ||
3105 | gfc_free_expr (e); | |
3106 | ||
3107 | /* Ignore errors to this point, if we've gotten here. This means | |
3108 | we ignore the m=MATCH_ERROR from above. */ | |
3109 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3110 | { | |
3111 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3112 | m = MATCH_ERROR; | |
3113 | } | |
3114 | else | |
3115 | /* All tests passed. */ | |
3116 | m = MATCH_YES; | |
3117 | ||
3118 | if (m == MATCH_ERROR) | |
3119 | gfc_current_locus = where; | |
f5acf0f2 | 3120 | |
187de1ed FXC |
3121 | /* Return what we know from the test(s). */ |
3122 | return m; | |
3123 | ||
3124 | no_match: | |
3125 | gfc_free_expr (e); | |
3126 | gfc_current_locus = where; | |
3127 | return m; | |
3128 | } | |
3129 | ||
8234e5e0 | 3130 | |
6de9cd9a DN |
3131 | /* Match the various kind/length specifications in a CHARACTER |
3132 | declaration. We don't return MATCH_NO. */ | |
3133 | ||
8234e5e0 SK |
3134 | match |
3135 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 3136 | { |
187de1ed | 3137 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
3138 | gfc_charlen *cl; |
3139 | gfc_expr *len; | |
3140 | match m; | |
e69afb29 | 3141 | bool deferred; |
187de1ed | 3142 | |
6de9cd9a DN |
3143 | len = NULL; |
3144 | seen_length = 0; | |
187de1ed FXC |
3145 | kind = 0; |
3146 | is_iso_c = 0; | |
e69afb29 | 3147 | deferred = false; |
6de9cd9a DN |
3148 | |
3149 | /* Try the old-style specification first. */ | |
3150 | old_char_selector = 0; | |
3151 | ||
2767f2cc | 3152 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
3153 | if (m != MATCH_NO) |
3154 | { | |
3155 | if (m == MATCH_YES) | |
3156 | old_char_selector = 1; | |
3157 | seen_length = 1; | |
3158 | goto done; | |
3159 | } | |
3160 | ||
3161 | m = gfc_match_char ('('); | |
3162 | if (m != MATCH_YES) | |
3163 | { | |
a8b3b0b6 | 3164 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
3165 | goto done; |
3166 | } | |
3167 | ||
a8b3b0b6 | 3168 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
3169 | if (gfc_match (" kind =") == MATCH_YES) |
3170 | { | |
187de1ed | 3171 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 3172 | |
6de9cd9a DN |
3173 | if (m == MATCH_ERROR) |
3174 | goto done; | |
3175 | if (m == MATCH_NO) | |
3176 | goto syntax; | |
3177 | ||
3178 | if (gfc_match (" , len =") == MATCH_NO) | |
3179 | goto rparen; | |
3180 | ||
e69afb29 | 3181 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3182 | if (m == MATCH_NO) |
3183 | goto syntax; | |
3184 | if (m == MATCH_ERROR) | |
3185 | goto done; | |
3186 | seen_length = 1; | |
3187 | ||
3188 | goto rparen; | |
3189 | } | |
3190 | ||
66e4ab31 | 3191 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
3192 | if (gfc_match (" len =") == MATCH_YES) |
3193 | { | |
e69afb29 | 3194 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3195 | if (m == MATCH_NO) |
3196 | goto syntax; | |
3197 | if (m == MATCH_ERROR) | |
3198 | goto done; | |
3199 | seen_length = 1; | |
3200 | ||
3201 | if (gfc_match_char (')') == MATCH_YES) | |
3202 | goto done; | |
3203 | ||
3204 | if (gfc_match (" , kind =") != MATCH_YES) | |
3205 | goto syntax; | |
3206 | ||
187de1ed FXC |
3207 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3208 | goto done; | |
6de9cd9a DN |
3209 | |
3210 | goto rparen; | |
3211 | } | |
3212 | ||
66e4ab31 | 3213 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 3214 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
3215 | if (m == MATCH_NO) |
3216 | goto syntax; | |
3217 | if (m == MATCH_ERROR) | |
3218 | goto done; | |
3219 | seen_length = 1; | |
3220 | ||
3221 | m = gfc_match_char (')'); | |
3222 | if (m == MATCH_YES) | |
3223 | goto done; | |
3224 | ||
3225 | if (gfc_match_char (',') != MATCH_YES) | |
3226 | goto syntax; | |
3227 | ||
a8b3b0b6 | 3228 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 3229 | |
187de1ed | 3230 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
3231 | if (m == MATCH_ERROR) |
3232 | goto done; | |
3233 | if (m == MATCH_NO) | |
3234 | goto syntax; | |
3235 | ||
3236 | rparen: | |
3237 | /* Require a right-paren at this point. */ | |
3238 | m = gfc_match_char (')'); | |
3239 | if (m == MATCH_YES) | |
3240 | goto done; | |
3241 | ||
3242 | syntax: | |
3243 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3244 | m = MATCH_ERROR; | |
16f8ffc8 JD |
3245 | gfc_free_expr (len); |
3246 | return m; | |
6de9cd9a DN |
3247 | |
3248 | done: | |
a99d95a2 PT |
3249 | /* Deal with character functions after USE and IMPORT statements. */ |
3250 | if (gfc_matching_function) | |
1c8bcdf7 | 3251 | { |
a99d95a2 | 3252 | gfc_free_expr (len); |
1c8bcdf7 PT |
3253 | gfc_undo_symbols (); |
3254 | return MATCH_YES; | |
3255 | } | |
3256 | ||
6de9cd9a DN |
3257 | if (m != MATCH_YES) |
3258 | { | |
3259 | gfc_free_expr (len); | |
3260 | return m; | |
3261 | } | |
3262 | ||
3263 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 3264 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
3265 | |
3266 | if (seen_length == 0) | |
f622221a | 3267 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
6de9cd9a | 3268 | else |
00df7c36 | 3269 | { |
3cf89a7b SK |
3270 | /* If gfortran ends up here, then len may be reducible to a constant. |
3271 | Try to do that here. If it does not reduce, simply assign len to | |
3272 | charlen. A complication occurs with user-defined generic functions, | |
3273 | which are not resolved. Use a private namespace to deal with | |
3274 | generic functions. */ | |
3275 | ||
00df7c36 SK |
3276 | if (len && len->expr_type != EXPR_CONSTANT) |
3277 | { | |
3cf89a7b | 3278 | gfc_namespace *old_ns; |
00df7c36 | 3279 | gfc_expr *e; |
3cf89a7b SK |
3280 | |
3281 | old_ns = gfc_current_ns; | |
3282 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3283 | ||
00df7c36 SK |
3284 | e = gfc_copy_expr (len); |
3285 | gfc_reduce_init_expr (e); | |
3286 | if (e->expr_type == EXPR_CONSTANT) | |
58da192e SK |
3287 | { |
3288 | gfc_replace_expr (len, e); | |
3289 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3290 | mpz_set_ui (len->value.integer, 0); | |
3291 | } | |
00df7c36 SK |
3292 | else |
3293 | gfc_free_expr (e); | |
3cf89a7b SK |
3294 | |
3295 | gfc_free_namespace (gfc_current_ns); | |
3296 | gfc_current_ns = old_ns; | |
00df7c36 | 3297 | } |
3cf89a7b SK |
3298 | |
3299 | cl->length = len; | |
00df7c36 | 3300 | } |
6de9cd9a | 3301 | |
bc21d315 | 3302 | ts->u.cl = cl; |
187de1ed | 3303 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 3304 | ts->deferred = deferred; |
6de9cd9a | 3305 | |
eea58adb | 3306 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 3307 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 3308 | if (kind != 0) |
eea58adb | 3309 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
3310 | of the named constants from iso_c_binding. */ |
3311 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 3312 | else if (len != NULL) |
187de1ed FXC |
3313 | /* Here, we might have parsed something such as: character(c_char) |
3314 | In this case, the parsing code above grabs the c_char when | |
3315 | looking for the length (line 1690, roughly). it's the last | |
3316 | testcase for parsing the kind params of a character variable. | |
3317 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 3318 | could be an error. |
187de1ed FXC |
3319 | To see if the user used a C interop kind, test the expr |
3320 | of the so called length, and see if it's C interoperable. */ | |
3321 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 3322 | |
6de9cd9a DN |
3323 | return MATCH_YES; |
3324 | } | |
3325 | ||
3326 | ||
f6288c24 FR |
3327 | /* Matches a RECORD declaration. */ |
3328 | ||
3329 | static match | |
e79e6763 | 3330 | match_record_decl (char *name) |
f6288c24 FR |
3331 | { |
3332 | locus old_loc; | |
3333 | old_loc = gfc_current_locus; | |
e79e6763 | 3334 | match m; |
f6288c24 | 3335 | |
e79e6763 FR |
3336 | m = gfc_match (" record /"); |
3337 | if (m == MATCH_YES) | |
f6288c24 | 3338 | { |
f6d17ecd | 3339 | if (!flag_dec_structure) |
f6288c24 FR |
3340 | { |
3341 | gfc_current_locus = old_loc; | |
3342 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3343 | "-fdec-structure"); | |
3344 | return MATCH_ERROR; | |
3345 | } | |
e79e6763 FR |
3346 | m = gfc_match (" %n/", name); |
3347 | if (m == MATCH_YES) | |
3348 | return MATCH_YES; | |
f6288c24 FR |
3349 | } |
3350 | ||
e79e6763 | 3351 | gfc_current_locus = old_loc; |
f6d17ecd | 3352 | if (flag_dec_structure |
e79e6763 FR |
3353 | && (gfc_match (" record% ") == MATCH_YES |
3354 | || gfc_match (" record%t") == MATCH_YES)) | |
3355 | gfc_error ("Structure name expected after RECORD at %C"); | |
3356 | if (m == MATCH_NO) | |
f6288c24 | 3357 | return MATCH_NO; |
e79e6763 FR |
3358 | |
3359 | return MATCH_ERROR; | |
f6288c24 FR |
3360 | } |
3361 | ||
5bab4c96 PT |
3362 | |
3363 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3364 | of expressions to substitute into the possibly parameterized expression | |
3365 | 'e'. Using a list is inefficient but should not be too bad since the | |
3366 | number of type parameters is not likely to be large. */ | |
3367 | static bool | |
3368 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3369 | int* f) | |
3370 | { | |
3371 | gfc_actual_arglist *param; | |
3372 | gfc_expr *copy; | |
3373 | ||
3374 | if (e->expr_type != EXPR_VARIABLE) | |
3375 | return false; | |
3376 | ||
3377 | gcc_assert (e->symtree); | |
3378 | if (e->symtree->n.sym->attr.pdt_kind | |
3379 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3380 | { | |
3381 | for (param = type_param_spec_list; param; param = param->next) | |
3382 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3383 | break; | |
3384 | ||
3385 | if (param) | |
3386 | { | |
3387 | copy = gfc_copy_expr (param->expr); | |
3388 | *e = *copy; | |
3389 | free (copy); | |
3390 | } | |
3391 | } | |
3392 | ||
3393 | return false; | |
3394 | } | |
3395 | ||
3396 | ||
3397 | bool | |
3398 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3399 | { | |
3400 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3401 | } | |
3402 | ||
3403 | ||
3404 | bool | |
3405 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3406 | { | |
3407 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3408 | type_param_spec_list = param_list; | |
3409 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3410 | type_param_spec_list = NULL; | |
3411 | type_param_spec_list = old_param_spec_list; | |
3412 | } | |
3413 | ||
3414 | /* Determines the instance of a parameterized derived type to be used by | |
3415 | matching determining the values of the kind parameters and using them | |
3416 | in the name of the instance. If the instance exists, it is used, otherwise | |
3417 | a new derived type is created. */ | |
3418 | match | |
3419 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3420 | gfc_actual_arglist **ext_param_list) | |
3421 | { | |
3422 | /* The PDT template symbol. */ | |
3423 | gfc_symbol *pdt = *sym; | |
3424 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3425 | gfc_symbol *param; | |
3426 | /* The hoped for instance of the PDT. */ | |
3427 | gfc_symbol *instance; | |
3428 | /* The list of parameters appearing in the PDT declaration. */ | |
3429 | gfc_formal_arglist *type_param_name_list; | |
3430 | /* Used to store the parameter specification list during recursive calls. */ | |
3431 | gfc_actual_arglist *old_param_spec_list; | |
3432 | /* Pointers to the parameter specification being used. */ | |
3433 | gfc_actual_arglist *actual_param; | |
3434 | gfc_actual_arglist *tail = NULL; | |
3435 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3436 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3437 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3438 | ||
3439 | bool name_seen = (param_list == NULL); | |
3440 | bool assumed_seen = false; | |
3441 | bool deferred_seen = false; | |
3442 | bool spec_error = false; | |
3443 | int kind_value, i; | |
3444 | gfc_expr *kind_expr; | |
3445 | gfc_component *c1, *c2; | |
3446 | match m; | |
3447 | ||
3448 | type_param_spec_list = NULL; | |
3449 | ||
3450 | type_param_name_list = pdt->formal; | |
3451 | actual_param = param_list; | |
3452 | sprintf (name, "Pdt%s", pdt->name); | |
3453 | ||
3454 | /* Run through the parameter name list and pick up the actual | |
3455 | parameter values or use the default values in the PDT declaration. */ | |
3456 | for (; type_param_name_list; | |
3457 | type_param_name_list = type_param_name_list->next) | |
3458 | { | |
3459 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3460 | { | |
3461 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3462 | spec_error = deferred_seen; | |
3463 | else | |
3464 | spec_error = assumed_seen; | |
3465 | ||
3466 | if (spec_error) | |
3467 | { | |
3468 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3469 | "both ASSUMED and DEFERRED parameters"); | |
18a4e7e3 | 3470 | goto error_return; |
5bab4c96 PT |
3471 | } |
3472 | } | |
3473 | ||
3474 | if (actual_param && actual_param->name) | |
3475 | name_seen = true; | |
3476 | param = type_param_name_list->sym; | |
3477 | ||
276515e6 PT |
3478 | if (!param || !param->name) |
3479 | continue; | |
3480 | ||
18a4e7e3 | 3481 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
de624bee PT |
3482 | /* An error should already have been thrown in resolve.c |
3483 | (resolve_fl_derived0). */ | |
18a4e7e3 | 3484 | if (!pdt->attr.use_assoc && !c1) |
de624bee | 3485 | goto error_return; |
18a4e7e3 | 3486 | |
5bab4c96 PT |
3487 | kind_expr = NULL; |
3488 | if (!name_seen) | |
3489 | { | |
18a4e7e3 PT |
3490 | if (!actual_param && !(c1 && c1->initializer)) |
3491 | { | |
3492 | gfc_error ("The type parameter spec list at %C does not contain " | |
3493 | "enough parameter expressions"); | |
3494 | goto error_return; | |
3495 | } | |
3496 | else if (!actual_param && c1 && c1->initializer) | |
3497 | kind_expr = gfc_copy_expr (c1->initializer); | |
3498 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
5bab4c96 PT |
3499 | kind_expr = gfc_copy_expr (actual_param->expr); |
3500 | } | |
3501 | else | |
3502 | { | |
3503 | actual_param = param_list; | |
3504 | for (;actual_param; actual_param = actual_param->next) | |
3505 | if (actual_param->name | |
3506 | && strcmp (actual_param->name, param->name) == 0) | |
3507 | break; | |
3508 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3509 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3510 | else | |
3511 | { | |
62d3c075 PT |
3512 | if (c1->initializer) |
3513 | kind_expr = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3514 | else if (!(actual_param && param->attr.pdt_len)) |
3515 | { | |
71a21b9e | 3516 | gfc_error ("The derived parameter %qs at %C does not " |
5bab4c96 | 3517 | "have a default value", param->name); |
18a4e7e3 | 3518 | goto error_return; |
5bab4c96 PT |
3519 | } |
3520 | } | |
3521 | } | |
3522 | ||
3523 | /* Store the current parameter expressions in a temporary actual | |
3524 | arglist 'list' so that they can be substituted in the corresponding | |
3525 | expressions in the PDT instance. */ | |
3526 | if (type_param_spec_list == NULL) | |
3527 | { | |
3528 | type_param_spec_list = gfc_get_actual_arglist (); | |
3529 | tail = type_param_spec_list; | |
3530 | } | |
3531 | else | |
3532 | { | |
3533 | tail->next = gfc_get_actual_arglist (); | |
3534 | tail = tail->next; | |
3535 | } | |
3536 | tail->name = param->name; | |
3537 | ||
3538 | if (kind_expr) | |
3539 | { | |
87f3a5cf PT |
3540 | /* Try simplification even for LEN expressions. */ |
3541 | gfc_resolve_expr (kind_expr); | |
3542 | gfc_simplify_expr (kind_expr, 1); | |
18a4e7e3 PT |
3543 | /* Variable expressions seem to default to BT_PROCEDURE. |
3544 | TODO find out why this is and fix it. */ | |
3545 | if (kind_expr->ts.type != BT_INTEGER | |
3546 | && kind_expr->ts.type != BT_PROCEDURE) | |
3547 | { | |
3548 | gfc_error ("The parameter expression at %C must be of " | |
3549 | "INTEGER type and not %s type", | |
3550 | gfc_basic_typename (kind_expr->ts.type)); | |
3551 | goto error_return; | |
3552 | } | |
3553 | ||
5bab4c96 | 3554 | tail->expr = gfc_copy_expr (kind_expr); |
5bab4c96 PT |
3555 | } |
3556 | ||
3557 | if (actual_param) | |
3558 | tail->spec_type = actual_param->spec_type; | |
3559 | ||
3560 | if (!param->attr.pdt_kind) | |
3561 | { | |
18a4e7e3 | 3562 | if (!name_seen && actual_param) |
5bab4c96 PT |
3563 | actual_param = actual_param->next; |
3564 | if (kind_expr) | |
3565 | { | |
3566 | gfc_free_expr (kind_expr); | |
3567 | kind_expr = NULL; | |
3568 | } | |
3569 | continue; | |
3570 | } | |
3571 | ||
3572 | if (actual_param | |
3573 | && (actual_param->spec_type == SPEC_ASSUMED | |
3574 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3575 | { | |
71a21b9e | 3576 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
5bab4c96 | 3577 | "ASSUMED or DEFERRED", param->name); |
18a4e7e3 | 3578 | goto error_return; |
5bab4c96 PT |
3579 | } |
3580 | ||
3581 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3582 | { | |
71a21b9e | 3583 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
5bab4c96 | 3584 | "reduce to a constant expression", param->name); |
18a4e7e3 | 3585 | goto error_return; |
5bab4c96 PT |
3586 | } |
3587 | ||
3588 | gfc_extract_int (kind_expr, &kind_value); | |
8a302cb2 | 3589 | sprintf (name + strlen (name), "_%d", kind_value); |
5bab4c96 PT |
3590 | |
3591 | if (!name_seen && actual_param) | |
3592 | actual_param = actual_param->next; | |
3593 | gfc_free_expr (kind_expr); | |
3594 | } | |
3595 | ||
18a4e7e3 PT |
3596 | if (!name_seen && actual_param) |
3597 | { | |
3598 | gfc_error ("The type parameter spec list at %C contains too many " | |
3599 | "parameter expressions"); | |
3600 | goto error_return; | |
3601 | } | |
3602 | ||
5bab4c96 PT |
3603 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3604 | build it, using 'pdt' as a template. */ | |
3605 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3606 | { | |
3607 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
18a4e7e3 | 3608 | goto error_return; |
5bab4c96 PT |
3609 | } |
3610 | ||
3611 | m = MATCH_YES; | |
3612 | ||
3613 | if (instance->attr.flavor == FL_DERIVED | |
3614 | && instance->attr.pdt_type) | |
3615 | { | |
3616 | instance->refs++; | |
3617 | if (ext_param_list) | |
3618 | *ext_param_list = type_param_spec_list; | |
3619 | *sym = instance; | |
3620 | gfc_commit_symbols (); | |
3621 | return m; | |
3622 | } | |
3623 | ||
3624 | /* Start building the new instance of the parameterized type. */ | |
3625 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3626 | instance->attr.pdt_template = 0; | |
3627 | instance->attr.pdt_type = 1; | |
3628 | instance->declared_at = gfc_current_locus; | |
3629 | ||
3630 | /* Add the components, replacing the parameters in all expressions | |
3631 | with the expressions for their values in 'type_param_spec_list'. */ | |
3632 | c1 = pdt->components; | |
3633 | tail = type_param_spec_list; | |
3634 | for (; c1; c1 = c1->next) | |
3635 | { | |
3636 | gfc_add_component (instance, c1->name, &c2); | |
276515e6 | 3637 | |
5bab4c96 PT |
3638 | c2->ts = c1->ts; |
3639 | c2->attr = c1->attr; | |
3640 | ||
276515e6 PT |
3641 | /* The order of declaration of the type_specs might not be the |
3642 | same as that of the components. */ | |
3643 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3644 | { | |
3645 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3646 | if (strcmp (c1->name, tail->name) == 0) | |
3647 | break; | |
3648 | } | |
3649 | ||
5bab4c96 PT |
3650 | /* Deal with type extension by recursively calling this function |
3651 | to obtain the instance of the extended type. */ | |
3652 | if (gfc_current_state () != COMP_DERIVED | |
3653 | && c1 == pdt->components | |
3654 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3655 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3656 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3657 | { | |
3658 | gfc_formal_arglist *f; | |
3659 | ||
3660 | old_param_spec_list = type_param_spec_list; | |
3661 | ||
3662 | /* Obtain a spec list appropriate to the extended type..*/ | |
3663 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3664 | type_param_spec_list = actual_param; | |
3665 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3666 | actual_param = actual_param->next; | |
3667 | if (actual_param) | |
3668 | { | |
3669 | gfc_free_actual_arglist (actual_param->next); | |
3670 | actual_param->next = NULL; | |
3671 | } | |
3672 | ||
3673 | /* Now obtain the PDT instance for the extended type. */ | |
3674 | c2->param_list = type_param_spec_list; | |
3675 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3676 | NULL); | |
3677 | type_param_spec_list = old_param_spec_list; | |
3678 | ||
3679 | c2->ts.u.derived->refs++; | |
3680 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3681 | ||
3682 | /* Set extension level. */ | |
3683 | if (c2->ts.u.derived->attr.extension == 255) | |
3684 | { | |
3685 | /* Since the extension field is 8 bit wide, we can only have | |
3686 | up to 255 extension levels. */ | |
3687 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3688 | c2->ts.u.derived->name, | |
3689 | &c2->ts.u.derived->declared_at); | |
18a4e7e3 | 3690 | goto error_return; |
5bab4c96 PT |
3691 | } |
3692 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3693 | ||
5bab4c96 PT |
3694 | continue; |
3695 | } | |
3696 | ||
3697 | /* Set the component kind using the parameterized expression. */ | |
276515e6 PT |
3698 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3699 | && c1->kind_expr != NULL) | |
5bab4c96 PT |
3700 | { |
3701 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3702 | gfc_insert_kind_parameter_exprs (e); | |
87f3a5cf | 3703 | gfc_simplify_expr (e, 1); |
5bab4c96 PT |
3704 | gfc_extract_int (e, &c2->ts.kind); |
3705 | gfc_free_expr (e); | |
18a4e7e3 PT |
3706 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3707 | { | |
3708 | gfc_error ("Kind %d not supported for type %s at %C", | |
3709 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3710 | goto error_return; | |
3711 | } | |
5bab4c96 PT |
3712 | } |
3713 | ||
3714 | /* Similarly, set the string length if parameterized. */ | |
3715 | if (c1->ts.type == BT_CHARACTER | |
3716 | && c1->ts.u.cl->length | |
3717 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3718 | { | |
3719 | gfc_expr *e; | |
3720 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3721 | gfc_insert_kind_parameter_exprs (e); | |
3722 | gfc_simplify_expr (e, 1); | |
3723 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3724 | c2->ts.u.cl->length = e; | |
3725 | c2->attr.pdt_string = 1; | |
3726 | } | |
3727 | ||
3728 | /* Set up either the KIND/LEN initializer, if constant, | |
3729 | or the parameterized expression. Use the template | |
3730 | initializer if one is not already set in this instance. */ | |
3731 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3732 | { | |
3733 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3734 | c2->initializer = gfc_copy_expr (tail->expr); | |
3735 | else if (tail && tail->expr) | |
3736 | { | |
3737 | c2->param_list = gfc_get_actual_arglist (); | |
3738 | c2->param_list->name = tail->name; | |
3739 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3740 | c2->param_list->next = NULL; | |
3741 | } | |
3742 | ||
3743 | if (!c2->initializer && c1->initializer) | |
3744 | c2->initializer = gfc_copy_expr (c1->initializer); | |
5bab4c96 PT |
3745 | } |
3746 | ||
3747 | /* Copy the array spec. */ | |
3748 | c2->as = gfc_copy_array_spec (c1->as); | |
3749 | if (c1->ts.type == BT_CLASS) | |
3750 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3751 | ||
3752 | /* Determine if an array spec is parameterized. If so, substitute | |
3753 | in the parameter expressions for the bounds and set the pdt_array | |
3754 | attribute. Notice that this attribute must be unconditionally set | |
3755 | if this is an array of parameterized character length. */ | |
3756 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3757 | { | |
3758 | bool pdt_array = false; | |
3759 | ||
3760 | /* Are the bounds of the array parameterized? */ | |
3761 | for (i = 0; i < c1->as->rank; i++) | |
3762 | { | |
3763 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3764 | pdt_array = true; | |
3765 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3766 | pdt_array = true; | |
3767 | } | |
3768 | ||
3769 | /* If they are, free the expressions for the bounds and | |
3770 | replace them with the template expressions with substitute | |
3771 | values. */ | |
3772 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3773 | { | |
3774 | gfc_expr *e; | |
3775 | e = gfc_copy_expr (c1->as->lower[i]); | |
3776 | gfc_insert_kind_parameter_exprs (e); | |
3777 | gfc_simplify_expr (e, 1); | |
3778 | gfc_free_expr (c2->as->lower[i]); | |
3779 | c2->as->lower[i] = e; | |
3780 | e = gfc_copy_expr (c1->as->upper[i]); | |
3781 | gfc_insert_kind_parameter_exprs (e); | |
3782 | gfc_simplify_expr (e, 1); | |
3783 | gfc_free_expr (c2->as->upper[i]); | |
3784 | c2->as->upper[i] = e; | |
3785 | } | |
3786 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
0b627b58 PT |
3787 | if (c1->initializer) |
3788 | { | |
3789 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3790 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3791 | gfc_simplify_expr (c2->initializer, 1); | |
3792 | } | |
5bab4c96 PT |
3793 | } |
3794 | ||
3795 | /* Recurse into this function for PDT components. */ | |
3796 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3797 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3798 | { | |
3799 | gfc_actual_arglist *params; | |
3800 | /* The component in the template has a list of specification | |
3801 | expressions derived from its declaration. */ | |
3802 | params = gfc_copy_actual_arglist (c1->param_list); | |
3803 | actual_param = params; | |
3804 | /* Substitute the template parameters with the expressions | |
3805 | from the specification list. */ | |
3806 | for (;actual_param; actual_param = actual_param->next) | |
3807 | gfc_insert_parameter_exprs (actual_param->expr, | |
3808 | type_param_spec_list); | |
3809 | ||
3810 | /* Now obtain the PDT instance for the component. */ | |
3811 | old_param_spec_list = type_param_spec_list; | |
3812 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3813 | type_param_spec_list = old_param_spec_list; | |
3814 | ||
3815 | c2->param_list = params; | |
2fcd5884 PT |
3816 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3817 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3818 | ||
3819 | if (c2->attr.allocatable) | |
3820 | instance->attr.alloc_comp = 1; | |
5bab4c96 PT |
3821 | } |
3822 | } | |
3823 | ||
3824 | gfc_commit_symbol (instance); | |
3825 | if (ext_param_list) | |
3826 | *ext_param_list = type_param_spec_list; | |
3827 | *sym = instance; | |
3828 | return m; | |
18a4e7e3 PT |
3829 | |
3830 | error_return: | |
3831 | gfc_free_actual_arglist (type_param_spec_list); | |
3832 | return MATCH_ERROR; | |
5bab4c96 PT |
3833 | } |
3834 | ||
3835 | ||
e74f1cc8 JW |
3836 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3837 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
3838 | IMPLICIT statements. |
3839 | ||
d51347f9 | 3840 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 3841 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
3842 | statement correctly. */ |
3843 | ||
e2d29968 | 3844 | match |
e74f1cc8 | 3845 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
3846 | { |
3847 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 3848 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 3849 | match m; |
8fc541d3 | 3850 | char c; |
0fb56814 | 3851 | bool seen_deferred_kind, matched_type; |
c3f34952 | 3852 | const char *dt_name; |
6de9cd9a | 3853 | |
5bab4c96 PT |
3854 | decl_type_param_list = NULL; |
3855 | ||
1c8bcdf7 PT |
3856 | /* A belt and braces check that the typespec is correctly being treated |
3857 | as a deferred characteristic association. */ | |
3858 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
3859 | && (gfc_current_block ()->result->ts.kind == -1) |
3860 | && (ts->kind == -1); | |
6de9cd9a | 3861 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
3862 | if (seen_deferred_kind) |
3863 | ts->kind = -1; | |
6de9cd9a | 3864 | |
a8b3b0b6 | 3865 | /* Clear the current binding label, in case one is given. */ |
62603fae | 3866 | curr_binding_label = NULL; |
a8b3b0b6 | 3867 | |
5f700e6d AL |
3868 | if (gfc_match (" byte") == MATCH_YES) |
3869 | { | |
524af0d6 | 3870 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
3871 | return MATCH_ERROR; |
3872 | ||
3873 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3874 | { | |
3875 | gfc_error ("BYTE type used at %C " | |
3876 | "is not available on the target machine"); | |
3877 | return MATCH_ERROR; | |
3878 | } | |
d51347f9 | 3879 | |
5f700e6d AL |
3880 | ts->type = BT_INTEGER; |
3881 | ts->kind = 1; | |
3882 | return MATCH_YES; | |
3883 | } | |
3884 | ||
0fb56814 | 3885 | |
45a69325 | 3886 | m = gfc_match (" type ("); |
0fb56814 | 3887 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3888 | if (matched_type) |
3889 | { | |
3890 | gfc_gobble_whitespace (); | |
3891 | if (gfc_peek_ascii_char () == '*') | |
3892 | { | |
3893 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3894 | return m; | |
f6288c24 | 3895 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3896 | { |
3897 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3898 | return MATCH_ERROR; | |
3899 | } | |
286f737c | 3900 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
45a69325 TB |
3901 | return MATCH_ERROR; |
3902 | ts->type = BT_ASSUMED; | |
3903 | return MATCH_YES; | |
3904 | } | |
3905 | ||
3906 | m = gfc_match ("%n", name); | |
3907 | matched_type = (m == MATCH_YES); | |
3908 | } | |
3909 | ||
0fb56814 TB |
3910 | if ((matched_type && strcmp ("integer", name) == 0) |
3911 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3912 | { |
3913 | ts->type = BT_INTEGER; | |
9d64df18 | 3914 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3915 | goto get_kind; |
3916 | } | |
3917 | ||
0fb56814 TB |
3918 | if ((matched_type && strcmp ("character", name) == 0) |
3919 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 3920 | { |
0fb56814 | 3921 | if (matched_type |
524af0d6 JB |
3922 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3923 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3924 | return MATCH_ERROR; |
3925 | ||
6de9cd9a | 3926 | ts->type = BT_CHARACTER; |
e5ddaa24 | 3927 | if (implicit_flag == 0) |
0fb56814 | 3928 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 3929 | else |
0fb56814 TB |
3930 | m = MATCH_YES; |
3931 | ||
3932 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3933 | m = MATCH_ERROR; | |
3934 | ||
3935 | return m; | |
6de9cd9a DN |
3936 | } |
3937 | ||
0fb56814 TB |
3938 | if ((matched_type && strcmp ("real", name) == 0) |
3939 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
3940 | { |
3941 | ts->type = BT_REAL; | |
9d64df18 | 3942 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
3943 | goto get_kind; |
3944 | } | |
3945 | ||
0fb56814 TB |
3946 | if ((matched_type |
3947 | && (strcmp ("doubleprecision", name) == 0 | |
3948 | || (strcmp ("double", name) == 0 | |
3949 | && gfc_match (" precision") == MATCH_YES))) | |
3950 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 3951 | { |
0fb56814 | 3952 | if (matched_type |
524af0d6 JB |
3953 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3954 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3955 | return MATCH_ERROR; |
3956 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3957 | return MATCH_ERROR; | |
3958 | ||
6de9cd9a | 3959 | ts->type = BT_REAL; |
9d64df18 | 3960 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3961 | return MATCH_YES; |
3962 | } | |
3963 | ||
0fb56814 TB |
3964 | if ((matched_type && strcmp ("complex", name) == 0) |
3965 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
3966 | { |
3967 | ts->type = BT_COMPLEX; | |
9d64df18 | 3968 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
3969 | goto get_kind; |
3970 | } | |
3971 | ||
0fb56814 TB |
3972 | if ((matched_type |
3973 | && (strcmp ("doublecomplex", name) == 0 | |
3974 | || (strcmp ("double", name) == 0 | |
3975 | && gfc_match (" complex") == MATCH_YES))) | |
3976 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 3977 | { |
524af0d6 | 3978 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
3979 | return MATCH_ERROR; |
3980 | ||
3981 | if (matched_type | |
524af0d6 JB |
3982 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3983 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3984 | return MATCH_ERROR; |
3985 | ||
3986 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
3987 | return MATCH_ERROR; |
3988 | ||
6de9cd9a | 3989 | ts->type = BT_COMPLEX; |
9d64df18 | 3990 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3991 | return MATCH_YES; |
3992 | } | |
3993 | ||
0fb56814 TB |
3994 | if ((matched_type && strcmp ("logical", name) == 0) |
3995 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
3996 | { |
3997 | ts->type = BT_LOGICAL; | |
9d64df18 | 3998 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
3999 | goto get_kind; |
4000 | } | |
4001 | ||
0fb56814 | 4002 | if (matched_type) |
5bab4c96 PT |
4003 | { |
4004 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4005 | if (m == MATCH_ERROR) | |
4006 | return m; | |
4007 | ||
0fb56814 | 4008 | m = gfc_match_char (')'); |
5bab4c96 | 4009 | } |
0fb56814 | 4010 | |
f6288c24 FR |
4011 | if (m != MATCH_YES) |
4012 | m = match_record_decl (name); | |
4013 | ||
4014 | if (matched_type || m == MATCH_YES) | |
4015 | { | |
4016 | ts->type = BT_DERIVED; | |
4017 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4018 | * don't need all the extra derived-type stuff for structures. */ | |
4019 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4020 | { | |
2f029c08 | 4021 | gfc_error ("Type name %qs at %C is ambiguous", name); |
f6288c24 FR |
4022 | return MATCH_ERROR; |
4023 | } | |
5bab4c96 PT |
4024 | |
4025 | if (sym && sym->attr.flavor == FL_DERIVED | |
4026 | && sym->attr.pdt_template | |
4027 | && gfc_current_state () != COMP_DERIVED) | |
4028 | { | |
4029 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4030 | if (m != MATCH_YES) | |
4031 | return m; | |
4032 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4033 | ts->u.derived = sym; | |
4034 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4035 | } | |
4036 | ||
f6288c24 FR |
4037 | if (sym && sym->attr.flavor == FL_STRUCT) |
4038 | { | |
4039 | ts->u.derived = sym; | |
4040 | return MATCH_YES; | |
4041 | } | |
4042 | /* Actually a derived type. */ | |
4043 | } | |
4044 | ||
cf2b3c22 | 4045 | else |
727e8544 | 4046 | { |
f6288c24 | 4047 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 4048 | structure declaration. */ |
f6d17ecd | 4049 | if (flag_dec_structure |
e79e6763 FR |
4050 | && (gfc_current_state () == COMP_STRUCTURE |
4051 | || gfc_current_state () == COMP_MAP)) | |
4052 | { | |
4053 | m = gfc_match (" structure"); | |
4054 | if (m == MATCH_YES) | |
4055 | { | |
4056 | m = gfc_match_structure_decl (); | |
4057 | if (m == MATCH_YES) | |
4058 | { | |
4059 | /* gfc_new_block is updated by match_structure_decl. */ | |
4060 | ts->type = BT_DERIVED; | |
4061 | ts->u.derived = gfc_new_block; | |
4062 | return MATCH_YES; | |
4063 | } | |
4064 | } | |
4065 | if (m == MATCH_ERROR) | |
4066 | return MATCH_ERROR; | |
4067 | } | |
f6288c24 | 4068 | |
528622fd JW |
4069 | /* Match CLASS declarations. */ |
4070 | m = gfc_match (" class ( * )"); | |
4071 | if (m == MATCH_ERROR) | |
4072 | return MATCH_ERROR; | |
4073 | else if (m == MATCH_YES) | |
4074 | { | |
8b704316 PT |
4075 | gfc_symbol *upe; |
4076 | gfc_symtree *st; | |
4077 | ts->type = BT_CLASS; | |
f5acf0f2 | 4078 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
4079 | if (upe == NULL) |
4080 | { | |
f5acf0f2 PT |
4081 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4082 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
4083 | st->n.sym = upe; |
4084 | gfc_set_sym_referenced (upe); | |
4085 | upe->refs++; | |
4086 | upe->ts.type = BT_VOID; | |
4087 | upe->attr.unlimited_polymorphic = 1; | |
4088 | /* This is essential to force the construction of | |
4089 | unlimited polymorphic component class containers. */ | |
4090 | upe->attr.zero_comp = 1; | |
70112e2a | 4091 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 4092 | &gfc_current_locus)) |
b93d8a3f JW |
4093 | return MATCH_ERROR; |
4094 | } | |
8b704316 PT |
4095 | else |
4096 | { | |
b93d8a3f | 4097 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
4098 | st->n.sym = upe; |
4099 | upe->refs++; | |
4100 | } | |
4101 | ts->u.derived = upe; | |
4102 | return m; | |
4103 | } | |
528622fd | 4104 | |
5bab4c96 PT |
4105 | m = gfc_match (" class ("); |
4106 | ||
4107 | if (m == MATCH_YES) | |
4108 | m = gfc_match ("%n", name); | |
4109 | else | |
4110 | return m; | |
4111 | ||
727e8544 JW |
4112 | if (m != MATCH_YES) |
4113 | return m; | |
cf2b3c22 | 4114 | ts->type = BT_CLASS; |
727e8544 | 4115 | |
524af0d6 | 4116 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 4117 | return MATCH_ERROR; |
5bab4c96 PT |
4118 | |
4119 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4120 | if (m == MATCH_ERROR) | |
4121 | return m; | |
4122 | ||
4123 | m = gfc_match_char (')'); | |
4124 | if (m != MATCH_YES) | |
4125 | return m; | |
727e8544 | 4126 | } |
6de9cd9a | 4127 | |
1c8bcdf7 PT |
4128 | /* Defer association of the derived type until the end of the |
4129 | specification block. However, if the derived type can be | |
f5acf0f2 | 4130 | found, add it to the typespec. */ |
1c8bcdf7 | 4131 | if (gfc_matching_function) |
e2d29968 | 4132 | { |
bc21d315 | 4133 | ts->u.derived = NULL; |
1c8bcdf7 PT |
4134 | if (gfc_current_state () != COMP_INTERFACE |
4135 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
4136 | { |
4137 | sym = gfc_find_dt_in_generic (sym); | |
4138 | ts->u.derived = sym; | |
4139 | } | |
e2d29968 PT |
4140 | return MATCH_YES; |
4141 | } | |
4142 | ||
4143 | /* Search for the name but allow the components to be defined later. If | |
4144 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 4145 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 4146 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
4147 | symtree with the all lower-case name contains the associated |
4148 | generic function. */ | |
f6288c24 | 4149 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 4150 | sym = NULL; |
c3f34952 TB |
4151 | dt_sym = NULL; |
4152 | if (ts->kind != -1) | |
6de9cd9a | 4153 | { |
c3f34952 TB |
4154 | gfc_get_ha_symbol (name, &sym); |
4155 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4156 | { | |
c4100eae | 4157 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
4158 | return MATCH_ERROR; |
4159 | } | |
4160 | if (sym->generic && !dt_sym) | |
4161 | dt_sym = gfc_find_dt_in_generic (sym); | |
18a4e7e3 PT |
4162 | |
4163 | /* Host associated PDTs can get confused with their constructors | |
4164 | because they ar instantiated in the template's namespace. */ | |
4165 | if (!dt_sym) | |
4166 | { | |
4167 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4168 | { | |
4169 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4170 | return MATCH_ERROR; | |
4171 | } | |
4172 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4173 | dt_sym = NULL; | |
4174 | } | |
6de9cd9a | 4175 | } |
e2d29968 PT |
4176 | else if (ts->kind == -1) |
4177 | { | |
1c8bcdf7 PT |
4178 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4179 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
4180 | gfc_find_symbol (name, NULL, iface, &sym); |
4181 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 4182 | { |
c4100eae | 4183 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
4184 | return MATCH_ERROR; |
4185 | } | |
c3f34952 TB |
4186 | if (sym && sym->generic && !dt_sym) |
4187 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 4188 | |
1c8bcdf7 | 4189 | ts->kind = 0; |
e2d29968 PT |
4190 | if (sym == NULL) |
4191 | return MATCH_NO; | |
4192 | } | |
6de9cd9a | 4193 | |
f6288c24 | 4194 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
4195 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4196 | || sym->attr.subroutine) | |
4197 | { | |
fea70c99 MLI |
4198 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4199 | "entity at %L, which has the same name", name, | |
4200 | &sym->declared_at); | |
c3f34952 TB |
4201 | return MATCH_ERROR; |
4202 | } | |
6de9cd9a | 4203 | |
5bab4c96 PT |
4204 | if (sym && sym->attr.flavor == FL_DERIVED |
4205 | && sym->attr.pdt_template | |
4206 | && gfc_current_state () != COMP_DERIVED) | |
18a4e7e3 PT |
4207 | { |
4208 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4209 | if (m != MATCH_YES) | |
4210 | return m; | |
4211 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4212 | ts->u.derived = sym; | |
4213 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4214 | } | |
5bab4c96 | 4215 | |
44c57c2f | 4216 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 4217 | gfc_set_sym_referenced (sym); |
c3f34952 | 4218 | if (!sym->attr.generic |
524af0d6 | 4219 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4220 | return MATCH_ERROR; |
4221 | ||
4222 | if (!sym->attr.function | |
524af0d6 | 4223 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
4224 | return MATCH_ERROR; |
4225 | ||
5bab4c96 PT |
4226 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4227 | && dt_sym->attr.pdt_template | |
4228 | && gfc_current_state () != COMP_DERIVED) | |
4229 | { | |
4230 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4231 | if (m != MATCH_YES) | |
4232 | return m; | |
4233 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4234 | } | |
4235 | ||
c3f34952 TB |
4236 | if (!dt_sym) |
4237 | { | |
4238 | gfc_interface *intr, *head; | |
4239 | ||
4240 | /* Use upper case to save the actual derived-type symbol. */ | |
4241 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 4242 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
4243 | head = sym->generic; |
4244 | intr = gfc_get_interface (); | |
4245 | intr->sym = dt_sym; | |
4246 | intr->where = gfc_current_locus; | |
4247 | intr->next = head; | |
4248 | sym->generic = intr; | |
4249 | sym->attr.if_source = IFSRC_DECL; | |
4250 | } | |
44c57c2f MM |
4251 | else |
4252 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
4253 | |
4254 | gfc_set_sym_referenced (dt_sym); | |
4255 | ||
f6288c24 | 4256 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 4257 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
4258 | return MATCH_ERROR; |
4259 | ||
4260 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
4261 | |
4262 | return MATCH_YES; | |
4263 | ||
4264 | get_kind: | |
0fb56814 | 4265 | if (matched_type |
524af0d6 JB |
4266 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4267 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
4268 | return MATCH_ERROR; |
4269 | ||
6de9cd9a DN |
4270 | /* For all types except double, derived and character, look for an |
4271 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 4272 | if (implicit_flag == 1) |
0fb56814 TB |
4273 | { |
4274 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4275 | return MATCH_ERROR; | |
4276 | ||
4277 | return MATCH_YES; | |
4278 | } | |
6de9cd9a | 4279 | |
0ff0dfbf TS |
4280 | if (gfc_current_form == FORM_FREE) |
4281 | { | |
0b3624f6 SK |
4282 | c = gfc_peek_ascii_char (); |
4283 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 4284 | && c != ':' && c != ',') |
0fb56814 TB |
4285 | { |
4286 | if (matched_type && c == ')') | |
4287 | { | |
4288 | gfc_next_ascii_char (); | |
4289 | return MATCH_YES; | |
4290 | } | |
4291 | return MATCH_NO; | |
4292 | } | |
0ff0dfbf TS |
4293 | } |
4294 | ||
e2d29968 | 4295 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 4296 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
4297 | { |
4298 | m = gfc_match_old_kind_spec (ts); | |
4299 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4300 | return MATCH_ERROR; | |
4301 | } | |
6de9cd9a | 4302 | |
0fb56814 TB |
4303 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4304 | return MATCH_ERROR; | |
4305 | ||
1c8bcdf7 PT |
4306 | /* Defer association of the KIND expression of function results |
4307 | until after USE and IMPORT statements. */ | |
4308 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4309 | || gfc_matching_function) | |
4310 | return MATCH_YES; | |
4311 | ||
6de9cd9a DN |
4312 | if (m == MATCH_NO) |
4313 | m = MATCH_YES; /* No kind specifier found. */ | |
4314 | ||
4315 | return m; | |
4316 | } | |
4317 | ||
4318 | ||
e5ddaa24 TS |
4319 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4320 | already matched in parse.c, or we would not end up here in the | |
4321 | first place. So the only thing we need to check, is if there is | |
4322 | trailing garbage. If not, the match is successful. */ | |
4323 | ||
4324 | match | |
4325 | gfc_match_implicit_none (void) | |
4326 | { | |
8b7a967e TB |
4327 | char c; |
4328 | match m; | |
4329 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4330 | bool type = false; | |
4331 | bool external = false; | |
a6c63173 TB |
4332 | locus cur_loc = gfc_current_locus; |
4333 | ||
4334 | if (gfc_current_ns->seen_implicit_none | |
4335 | || gfc_current_ns->has_implicit_none_export) | |
4336 | { | |
4337 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4338 | return MATCH_ERROR; | |
4339 | } | |
8b7a967e TB |
4340 | |
4341 | gfc_gobble_whitespace (); | |
4342 | c = gfc_peek_ascii_char (); | |
4343 | if (c == '(') | |
4344 | { | |
4345 | (void) gfc_next_ascii_char (); | |
8179b067 | 4346 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
8b7a967e | 4347 | return MATCH_ERROR; |
a6c63173 TB |
4348 | |
4349 | gfc_gobble_whitespace (); | |
4350 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 4351 | { |
a6c63173 TB |
4352 | (void) gfc_next_ascii_char (); |
4353 | type = true; | |
4354 | } | |
4355 | else | |
4356 | for(;;) | |
4357 | { | |
4358 | m = gfc_match (" %n", name); | |
4359 | if (m != MATCH_YES) | |
4360 | return MATCH_ERROR; | |
8b7a967e | 4361 | |
a6c63173 TB |
4362 | if (strcmp (name, "type") == 0) |
4363 | type = true; | |
4364 | else if (strcmp (name, "external") == 0) | |
4365 | external = true; | |
4366 | else | |
4367 | return MATCH_ERROR; | |
8b7a967e | 4368 | |
a6c63173 TB |
4369 | gfc_gobble_whitespace (); |
4370 | c = gfc_next_ascii_char (); | |
4371 | if (c == ',') | |
4372 | continue; | |
4373 | if (c == ')') | |
4374 | break; | |
4375 | return MATCH_ERROR; | |
4376 | } | |
8b7a967e TB |
4377 | } |
4378 | else | |
4379 | type = true; | |
4380 | ||
4381 | if (gfc_match_eos () != MATCH_YES) | |
4382 | return MATCH_ERROR; | |
4383 | ||
a6c63173 | 4384 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
4385 | |
4386 | return MATCH_YES; | |
e5ddaa24 TS |
4387 | } |
4388 | ||
4389 | ||
4390 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4391 | ||
4392 | static match | |
1107b970 | 4393 | match_implicit_range (void) |
e5ddaa24 | 4394 | { |
8fc541d3 FXC |
4395 | char c, c1, c2; |
4396 | int inner; | |
e5ddaa24 TS |
4397 | locus cur_loc; |
4398 | ||
4399 | cur_loc = gfc_current_locus; | |
4400 | ||
4401 | gfc_gobble_whitespace (); | |
8fc541d3 | 4402 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4403 | if (c != '(') |
4404 | { | |
4405 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4406 | goto bad; | |
4407 | } | |
4408 | ||
4409 | inner = 1; | |
4410 | while (inner) | |
4411 | { | |
4412 | gfc_gobble_whitespace (); | |
8fc541d3 | 4413 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4414 | if (!ISALPHA (c1)) |
4415 | goto bad; | |
4416 | ||
4417 | gfc_gobble_whitespace (); | |
8fc541d3 | 4418 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4419 | |
4420 | switch (c) | |
4421 | { | |
4422 | case ')': | |
66e4ab31 | 4423 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
4424 | |
4425 | case ',': | |
4426 | c2 = c1; | |
4427 | break; | |
4428 | ||
4429 | case '-': | |
4430 | gfc_gobble_whitespace (); | |
8fc541d3 | 4431 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
4432 | if (!ISALPHA (c2)) |
4433 | goto bad; | |
4434 | ||
4435 | gfc_gobble_whitespace (); | |
8fc541d3 | 4436 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
4437 | |
4438 | if ((c != ',') && (c != ')')) | |
4439 | goto bad; | |
4440 | if (c == ')') | |
4441 | inner = 0; | |
4442 | ||
4443 | break; | |
4444 | ||
4445 | default: | |
4446 | goto bad; | |
4447 | } | |
4448 | ||
4449 | if (c1 > c2) | |
4450 | { | |
4451 | gfc_error ("Letters must be in alphabetic order in " | |
4452 | "IMPLICIT statement at %C"); | |
4453 | goto bad; | |
4454 | } | |
4455 | ||
4456 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
4457 | implicits from this IMPLICIT statement. We do not check for |
4458 | conflicts with whatever earlier IMPLICIT statements may have | |
4459 | set. This is done when we've successfully finished matching | |
4460 | the current one. */ | |
524af0d6 | 4461 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
4462 | goto bad; |
4463 | } | |
4464 | ||
4465 | return MATCH_YES; | |
4466 | ||
4467 | bad: | |
4468 | gfc_syntax_error (ST_IMPLICIT); | |
4469 | ||
4470 | gfc_current_locus = cur_loc; | |
4471 | return MATCH_ERROR; | |
4472 | } | |
4473 | ||
4474 | ||
4475 | /* Match an IMPLICIT statement, storing the types for | |
4476 | gfc_set_implicit() if the statement is accepted by the parser. | |
4477 | There is a strange looking, but legal syntactic construction | |
4478 | possible. It looks like: | |
4479 | ||
4480 | IMPLICIT INTEGER (a-b) (c-d) | |
4481 | ||
4482 | This is legal if "a-b" is a constant expression that happens to | |
4483 | equal one of the legal kinds for integers. The real problem | |
4484 | happens with an implicit specification that looks like: | |
4485 | ||
4486 | IMPLICIT INTEGER (a-b) | |
4487 | ||
4488 | In this case, a typespec matcher that is "greedy" (as most of the | |
4489 | matchers are) gobbles the character range as a kindspec, leaving | |
4490 | nothing left. We therefore have to go a bit more slowly in the | |
4491 | matching process by inhibiting the kindspec checking during | |
4492 | typespec matching and checking for a kind later. */ | |
4493 | ||
4494 | match | |
4495 | gfc_match_implicit (void) | |
4496 | { | |
4497 | gfc_typespec ts; | |
4498 | locus cur_loc; | |
8fc541d3 | 4499 | char c; |
e5ddaa24 TS |
4500 | match m; |
4501 | ||
8b7a967e TB |
4502 | if (gfc_current_ns->seen_implicit_none) |
4503 | { | |
4504 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4505 | "statement"); | |
4506 | return MATCH_ERROR; | |
4507 | } | |
4508 | ||
44000dbb JD |
4509 | gfc_clear_ts (&ts); |
4510 | ||
e5ddaa24 TS |
4511 | /* We don't allow empty implicit statements. */ |
4512 | if (gfc_match_eos () == MATCH_YES) | |
4513 | { | |
4514 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4515 | return MATCH_ERROR; | |
4516 | } | |
4517 | ||
e5ddaa24 TS |
4518 | do |
4519 | { | |
1107b970 PB |
4520 | /* First cleanup. */ |
4521 | gfc_clear_new_implicit (); | |
4522 | ||
e5ddaa24 | 4523 | /* A basic type is mandatory here. */ |
e74f1cc8 | 4524 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
4525 | if (m == MATCH_ERROR) |
4526 | goto error; | |
4527 | if (m == MATCH_NO) | |
4528 | goto syntax; | |
4529 | ||
4530 | cur_loc = gfc_current_locus; | |
1107b970 | 4531 | m = match_implicit_range (); |
e5ddaa24 TS |
4532 | |
4533 | if (m == MATCH_YES) | |
4534 | { | |
1107b970 | 4535 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 4536 | gfc_gobble_whitespace (); |
a6c63173 TB |
4537 | c = gfc_peek_ascii_char (); |
4538 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
4539 | { |
4540 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 4541 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 4542 | { |
9d64df18 | 4543 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 4544 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
f622221a | 4545 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
b7e75771 | 4546 | NULL, 1); |
1107b970 PB |
4547 | } |
4548 | ||
4549 | /* Record the Successful match. */ | |
524af0d6 | 4550 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4551 | return MATCH_ERROR; |
a6c63173 TB |
4552 | if (c == ',') |
4553 | c = gfc_next_ascii_char (); | |
4554 | else if (gfc_match_eos () == MATCH_ERROR) | |
4555 | goto error; | |
1107b970 PB |
4556 | continue; |
4557 | } | |
e5ddaa24 TS |
4558 | |
4559 | gfc_current_locus = cur_loc; | |
4560 | } | |
4561 | ||
1107b970 PB |
4562 | /* Discard the (incorrectly) matched range. */ |
4563 | gfc_clear_new_implicit (); | |
4564 | ||
4565 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4566 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 4567 | m = gfc_match_char_spec (&ts); |
1107b970 | 4568 | else |
e5ddaa24 | 4569 | { |
e2d29968 | 4570 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 4571 | if (m == MATCH_NO) |
1107b970 PB |
4572 | { |
4573 | m = gfc_match_old_kind_spec (&ts); | |
4574 | if (m == MATCH_ERROR) | |
4575 | goto error; | |
4576 | if (m == MATCH_NO) | |
4577 | goto syntax; | |
4578 | } | |
e5ddaa24 | 4579 | } |
1107b970 PB |
4580 | if (m == MATCH_ERROR) |
4581 | goto error; | |
e5ddaa24 | 4582 | |
1107b970 | 4583 | m = match_implicit_range (); |
e5ddaa24 TS |
4584 | if (m == MATCH_ERROR) |
4585 | goto error; | |
4586 | if (m == MATCH_NO) | |
4587 | goto syntax; | |
4588 | ||
4589 | gfc_gobble_whitespace (); | |
8fc541d3 | 4590 | c = gfc_next_ascii_char (); |
a6c63173 | 4591 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
4592 | goto syntax; |
4593 | ||
524af0d6 | 4594 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 4595 | return MATCH_ERROR; |
e5ddaa24 TS |
4596 | } |
4597 | while (c == ','); | |
4598 | ||
1107b970 | 4599 | return MATCH_YES; |
e5ddaa24 TS |
4600 | |
4601 | syntax: | |
4602 | gfc_syntax_error (ST_IMPLICIT); | |
4603 | ||
4604 | error: | |
4605 | return MATCH_ERROR; | |
4606 | } | |
4607 | ||
66e4ab31 | 4608 | |
8998be20 TB |
4609 | match |
4610 | gfc_match_import (void) | |
4611 | { | |
4612 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4613 | match m; | |
4614 | gfc_symbol *sym; | |
4615 | gfc_symtree *st; | |
4616 | ||
66e4ab31 SK |
4617 | if (gfc_current_ns->proc_name == NULL |
4618 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
4619 | { |
4620 | gfc_error ("IMPORT statement at %C only permitted in " | |
4621 | "an INTERFACE body"); | |
4622 | return MATCH_ERROR; | |
4623 | } | |
4624 | ||
4668d6f9 PT |
4625 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4626 | { | |
4627 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4628 | "in a module procedure interface body"); | |
4629 | return MATCH_ERROR; | |
4630 | } | |
4631 | ||
524af0d6 | 4632 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
4633 | return MATCH_ERROR; |
4634 | ||
4635 | if (gfc_match_eos () == MATCH_YES) | |
4636 | { | |
4637 | /* All host variables should be imported. */ | |
4638 | gfc_current_ns->has_import_set = 1; | |
4639 | return MATCH_YES; | |
4640 | } | |
4641 | ||
4642 | if (gfc_match (" ::") == MATCH_YES) | |
4643 | { | |
4644 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
4645 | { |
4646 | gfc_error ("Expecting list of named entities at %C"); | |
4647 | return MATCH_ERROR; | |
4648 | } | |
8998be20 TB |
4649 | } |
4650 | ||
4651 | for(;;) | |
4652 | { | |
2e8d9212 | 4653 | sym = NULL; |
8998be20 TB |
4654 | m = gfc_match (" %n", name); |
4655 | switch (m) | |
4656 | { | |
4657 | case MATCH_YES: | |
36d3fb4c | 4658 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 4659 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 4660 | { |
c4100eae | 4661 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
4662 | return MATCH_ERROR; |
4663 | } | |
4e2cf5f5 | 4664 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
4665 | && gfc_find_symbol (name, |
4666 | gfc_current_ns->proc_name->ns->parent, | |
4667 | 1, &sym)) | |
636dff67 | 4668 | { |
c4100eae | 4669 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
4670 | return MATCH_ERROR; |
4671 | } | |
4672 | ||
4673 | if (sym == NULL) | |
4674 | { | |
c4100eae | 4675 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
4676 | "at %C - does not exist.", name); |
4677 | return MATCH_ERROR; | |
4678 | } | |
4679 | ||
dd8b9dde | 4680 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 4681 | { |
db30e21c | 4682 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 4683 | "at %C", name); |
636dff67 SK |
4684 | goto next_item; |
4685 | } | |
4686 | ||
dd8b9dde | 4687 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
4688 | st->n.sym = sym; |
4689 | sym->refs++; | |
5a8af0b4 | 4690 | sym->attr.imported = 1; |
8998be20 | 4691 | |
c3f34952 TB |
4692 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4693 | { | |
4694 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 4695 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 4696 | lower-case name contains the associated generic function. */ |
c3f34952 | 4697 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 4698 | gfc_dt_upper_string (name)); |
c3f34952 TB |
4699 | st->n.sym = sym; |
4700 | sym->refs++; | |
4701 | sym->attr.imported = 1; | |
4702 | } | |
4703 | ||
8998be20 TB |
4704 | goto next_item; |
4705 | ||
4706 | case MATCH_NO: | |
4707 | break; | |
4708 | ||
4709 | case MATCH_ERROR: | |
4710 | return MATCH_ERROR; | |
4711 | } | |
4712 | ||
4713 | next_item: | |
4714 | if (gfc_match_eos () == MATCH_YES) | |
4715 | break; | |
4716 | if (gfc_match_char (',') != MATCH_YES) | |
4717 | goto syntax; | |
4718 | } | |
4719 | ||
4720 | return MATCH_YES; | |
4721 | ||
4722 | syntax: | |
4723 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4724 | return MATCH_ERROR; | |
4725 | } | |
e5ddaa24 | 4726 | |
66e4ab31 | 4727 | |
f2449db4 RS |
4728 | /* A minimal implementation of gfc_match without whitespace, escape |
4729 | characters or variable arguments. Returns true if the next | |
4730 | characters match the TARGET template exactly. */ | |
4731 | ||
4732 | static bool | |
4733 | match_string_p (const char *target) | |
4734 | { | |
4735 | const char *p; | |
4736 | ||
4737 | for (p = target; *p; p++) | |
8fc541d3 | 4738 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
4739 | return false; |
4740 | return true; | |
4741 | } | |
4742 | ||
6de9cd9a DN |
4743 | /* Matches an attribute specification including array specs. If |
4744 | successful, leaves the variables current_attr and current_as | |
4745 | holding the specification. Also sets the colon_seen variable for | |
4746 | later use by matchers associated with initializations. | |
4747 | ||
4748 | This subroutine is a little tricky in the sense that we don't know | |
4749 | if we really have an attr-spec until we hit the double colon. | |
4750 | Until that time, we can only return MATCH_NO. This forces us to | |
4751 | check for duplicate specification at this level. */ | |
4752 | ||
4753 | static match | |
4754 | match_attr_spec (void) | |
4755 | { | |
6de9cd9a | 4756 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 4757 | enum |
ea20e8be JW |
4758 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4759 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4760 | DECL_DIMENSION, DECL_EXTERNAL, | |
4761 | DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 4762 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 4763 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 4764 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c | 4765 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
5bab4c96 | 4766 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d75d9546 | 4767 | }; |
6de9cd9a DN |
4768 | |
4769 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4770 | #define NUM_DECL GFC_DECL_END | |
4771 | ||
ea20e8be JW |
4772 | /* Make sure that values from sym_intent are safe to be used here. */ |
4773 | gcc_assert (INTENT_IN > 0); | |
4774 | ||
6de9cd9a DN |
4775 | locus start, seen_at[NUM_DECL]; |
4776 | int seen[NUM_DECL]; | |
09639a83 | 4777 | unsigned int d; |
6de9cd9a DN |
4778 | const char *attr; |
4779 | match m; | |
524af0d6 | 4780 | bool t; |
6de9cd9a DN |
4781 | |
4782 | gfc_clear_attr (¤t_attr); | |
63645982 | 4783 | start = gfc_current_locus; |
6de9cd9a DN |
4784 | |
4785 | current_as = NULL; | |
4786 | colon_seen = 0; | |
6f855a26 | 4787 | attr_seen = 0; |
6de9cd9a DN |
4788 | |
4789 | /* See if we get all of the keywords up to the final double colon. */ | |
4790 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4791 | seen[d] = 0; | |
4792 | ||
4793 | for (;;) | |
4794 | { | |
8fc541d3 | 4795 | char ch; |
a8b3b0b6 | 4796 | |
f2449db4 RS |
4797 | d = DECL_NONE; |
4798 | gfc_gobble_whitespace (); | |
4799 | ||
8fc541d3 | 4800 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4801 | if (ch == ':') |
4802 | { | |
4803 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 4804 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
4805 | break; |
4806 | } | |
4807 | else if (ch == ',') | |
a8b3b0b6 | 4808 | { |
a8b3b0b6 | 4809 | gfc_gobble_whitespace (); |
8fc541d3 | 4810 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 4811 | { |
f2449db4 | 4812 | case 'a': |
1eee5628 TB |
4813 | gfc_next_ascii_char (); |
4814 | switch (gfc_next_ascii_char ()) | |
4815 | { | |
4816 | case 'l': | |
4817 | if (match_string_p ("locatable")) | |
4818 | { | |
4819 | /* Matched "allocatable". */ | |
4820 | d = DECL_ALLOCATABLE; | |
4821 | } | |
4822 | break; | |
4823 | ||
4824 | case 's': | |
4825 | if (match_string_p ("ynchronous")) | |
4826 | { | |
4827 | /* Matched "asynchronous". */ | |
4828 | d = DECL_ASYNCHRONOUS; | |
4829 | } | |
4830 | break; | |
34d567d1 FR |
4831 | |
4832 | case 'u': | |
4833 | if (match_string_p ("tomatic")) | |
4834 | { | |
4835 | /* Matched "automatic". */ | |
4836 | d = DECL_AUTOMATIC; | |
4837 | } | |
4838 | break; | |
1eee5628 | 4839 | } |
fe4e525c | 4840 | break; |
f2449db4 RS |
4841 | |
4842 | case 'b': | |
a8b3b0b6 | 4843 | /* Try and match the bind(c). */ |
1eabf70a | 4844 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 4845 | if (m == MATCH_YES) |
a8b3b0b6 | 4846 | d = DECL_IS_BIND_C; |
129d15a3 JW |
4847 | else if (m == MATCH_ERROR) |
4848 | goto cleanup; | |
f2449db4 RS |
4849 | break; |
4850 | ||
be59db2d | 4851 | case 'c': |
fe4e525c TB |
4852 | gfc_next_ascii_char (); |
4853 | if ('o' != gfc_next_ascii_char ()) | |
4854 | break; | |
4855 | switch (gfc_next_ascii_char ()) | |
4856 | { | |
4857 | case 'd': | |
4858 | if (match_string_p ("imension")) | |
4859 | { | |
4860 | d = DECL_CODIMENSION; | |
4861 | break; | |
4862 | } | |
191816a3 | 4863 | /* FALLTHRU */ |
fe4e525c TB |
4864 | case 'n': |
4865 | if (match_string_p ("tiguous")) | |
4866 | { | |
4867 | d = DECL_CONTIGUOUS; | |
4868 | break; | |
4869 | } | |
4870 | } | |
be59db2d TB |
4871 | break; |
4872 | ||
f2449db4 RS |
4873 | case 'd': |
4874 | if (match_string_p ("dimension")) | |
4875 | d = DECL_DIMENSION; | |
4876 | break; | |
4877 | ||
4878 | case 'e': | |
4879 | if (match_string_p ("external")) | |
4880 | d = DECL_EXTERNAL; | |
4881 | break; | |
4882 | ||
4883 | case 'i': | |
4884 | if (match_string_p ("int")) | |
4885 | { | |
8fc541d3 | 4886 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4887 | if (ch == 'e') |
4888 | { | |
4889 | if (match_string_p ("nt")) | |
4890 | { | |
4891 | /* Matched "intent". */ | |
ea20e8be JW |
4892 | d = match_intent_spec (); |
4893 | if (d == INTENT_UNKNOWN) | |
4894 | { | |
4895 | m = MATCH_ERROR; | |
4896 | goto cleanup; | |
4897 | } | |
f2449db4 RS |
4898 | } |
4899 | } | |
4900 | else if (ch == 'r') | |
4901 | { | |
4902 | if (match_string_p ("insic")) | |
4903 | { | |
4904 | /* Matched "intrinsic". */ | |
4905 | d = DECL_INTRINSIC; | |
4906 | } | |
4907 | } | |
4908 | } | |
4909 | break; | |
4910 | ||
5bab4c96 PT |
4911 | case 'k': |
4912 | if (match_string_p ("kind")) | |
4913 | d = DECL_KIND; | |
4914 | break; | |
4915 | ||
4916 | case 'l': | |
4917 | if (match_string_p ("len")) | |
4918 | d = DECL_LEN; | |
4919 | break; | |
4920 | ||
f2449db4 RS |
4921 | case 'o': |
4922 | if (match_string_p ("optional")) | |
4923 | d = DECL_OPTIONAL; | |
4924 | break; | |
4925 | ||
4926 | case 'p': | |
8fc541d3 FXC |
4927 | gfc_next_ascii_char (); |
4928 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
4929 | { |
4930 | case 'a': | |
4931 | if (match_string_p ("rameter")) | |
4932 | { | |
4933 | /* Matched "parameter". */ | |
4934 | d = DECL_PARAMETER; | |
4935 | } | |
4936 | break; | |
4937 | ||
4938 | case 'o': | |
4939 | if (match_string_p ("inter")) | |
4940 | { | |
4941 | /* Matched "pointer". */ | |
4942 | d = DECL_POINTER; | |
4943 | } | |
4944 | break; | |
4945 | ||
4946 | case 'r': | |
8fc541d3 | 4947 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
4948 | if (ch == 'i') |
4949 | { | |
4950 | if (match_string_p ("vate")) | |
4951 | { | |
4952 | /* Matched "private". */ | |
4953 | d = DECL_PRIVATE; | |
4954 | } | |
4955 | } | |
4956 | else if (ch == 'o') | |
4957 | { | |
4958 | if (match_string_p ("tected")) | |
4959 | { | |
4960 | /* Matched "protected". */ | |
4961 | d = DECL_PROTECTED; | |
4962 | } | |
4963 | } | |
4964 | break; | |
4965 | ||
4966 | case 'u': | |
4967 | if (match_string_p ("blic")) | |
4968 | { | |
4969 | /* Matched "public". */ | |
4970 | d = DECL_PUBLIC; | |
4971 | } | |
4972 | break; | |
4973 | } | |
4974 | break; | |
4975 | ||
4976 | case 's': | |
34d567d1 FR |
4977 | gfc_next_ascii_char (); |
4978 | switch (gfc_next_ascii_char ()) | |
4979 | { | |
4980 | case 'a': | |
4981 | if (match_string_p ("ve")) | |
4982 | { | |
4983 | /* Matched "save". */ | |
4984 | d = DECL_SAVE; | |
4985 | } | |
4986 | break; | |
4987 | ||
4988 | case 't': | |
4989 | if (match_string_p ("atic")) | |
4990 | { | |
4991 | /* Matched "static". */ | |
4992 | d = DECL_STATIC; | |
4993 | } | |
4994 | break; | |
4995 | } | |
f2449db4 RS |
4996 | break; |
4997 | ||
4998 | case 't': | |
4999 | if (match_string_p ("target")) | |
5000 | d = DECL_TARGET; | |
5001 | break; | |
5002 | ||
5003 | case 'v': | |
8fc541d3 FXC |
5004 | gfc_next_ascii_char (); |
5005 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
5006 | if (ch == 'a') |
5007 | { | |
5008 | if (match_string_p ("lue")) | |
5009 | { | |
5010 | /* Matched "value". */ | |
5011 | d = DECL_VALUE; | |
5012 | } | |
5013 | } | |
5014 | else if (ch == 'o') | |
5015 | { | |
5016 | if (match_string_p ("latile")) | |
5017 | { | |
5018 | /* Matched "volatile". */ | |
5019 | d = DECL_VOLATILE; | |
5020 | } | |
5021 | } | |
5022 | break; | |
a8b3b0b6 CR |
5023 | } |
5024 | } | |
d468bcdb | 5025 | |
f2449db4 RS |
5026 | /* No double colon and no recognizable decl_type, so assume that |
5027 | we've been looking at something else the whole time. */ | |
5028 | if (d == DECL_NONE) | |
5029 | { | |
5030 | m = MATCH_NO; | |
5031 | goto cleanup; | |
5032 | } | |
d51347f9 | 5033 | |
acb388a0 JD |
5034 | /* Check to make sure any parens are paired up correctly. */ |
5035 | if (gfc_match_parens () == MATCH_ERROR) | |
5036 | { | |
5037 | m = MATCH_ERROR; | |
5038 | goto cleanup; | |
5039 | } | |
5040 | ||
6de9cd9a | 5041 | seen[d]++; |
63645982 | 5042 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 5043 | |
d3a9eea2 | 5044 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 5045 | { |
d3a9eea2 | 5046 | gfc_array_spec *as = NULL; |
6de9cd9a | 5047 | |
d3a9eea2 TB |
5048 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5049 | d == DECL_CODIMENSION); | |
5050 | ||
5051 | if (current_as == NULL) | |
5052 | current_as = as; | |
5053 | else if (m == MATCH_YES) | |
6de9cd9a | 5054 | { |
524af0d6 | 5055 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 5056 | m = MATCH_ERROR; |
cede9502 | 5057 | free (as); |
6de9cd9a DN |
5058 | } |
5059 | ||
be59db2d TB |
5060 | if (m == MATCH_NO) |
5061 | { | |
d3a9eea2 TB |
5062 | if (d == DECL_CODIMENSION) |
5063 | gfc_error ("Missing codimension specification at %C"); | |
5064 | else | |
5065 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
5066 | m = MATCH_ERROR; |
5067 | } | |
5068 | ||
5069 | if (m == MATCH_ERROR) | |
5070 | goto cleanup; | |
5071 | } | |
6de9cd9a DN |
5072 | } |
5073 | ||
6de9cd9a DN |
5074 | /* Since we've seen a double colon, we have to be looking at an |
5075 | attr-spec. This means that we can now issue errors. */ | |
5076 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5077 | if (seen[d] > 1) | |
5078 | { | |
5079 | switch (d) | |
5080 | { | |
5081 | case DECL_ALLOCATABLE: | |
5082 | attr = "ALLOCATABLE"; | |
5083 | break; | |
1eee5628 TB |
5084 | case DECL_ASYNCHRONOUS: |
5085 | attr = "ASYNCHRONOUS"; | |
5086 | break; | |
be59db2d TB |
5087 | case DECL_CODIMENSION: |
5088 | attr = "CODIMENSION"; | |
5089 | break; | |
fe4e525c TB |
5090 | case DECL_CONTIGUOUS: |
5091 | attr = "CONTIGUOUS"; | |
5092 | break; | |
6de9cd9a DN |
5093 | case DECL_DIMENSION: |
5094 | attr = "DIMENSION"; | |
5095 | break; | |
5096 | case DECL_EXTERNAL: | |
5097 | attr = "EXTERNAL"; | |
5098 | break; | |
5099 | case DECL_IN: | |
5100 | attr = "INTENT (IN)"; | |
5101 | break; | |
5102 | case DECL_OUT: | |
5103 | attr = "INTENT (OUT)"; | |
5104 | break; | |
5105 | case DECL_INOUT: | |
5106 | attr = "INTENT (IN OUT)"; | |
5107 | break; | |
5108 | case DECL_INTRINSIC: | |
5109 | attr = "INTRINSIC"; | |
5110 | break; | |
5111 | case DECL_OPTIONAL: | |
5112 | attr = "OPTIONAL"; | |
5113 | break; | |
5bab4c96 PT |
5114 | case DECL_KIND: |
5115 | attr = "KIND"; | |
5116 | break; | |
5117 | case DECL_LEN: | |
5118 | attr = "LEN"; | |
5119 | break; | |
6de9cd9a DN |
5120 | case DECL_PARAMETER: |
5121 | attr = "PARAMETER"; | |
5122 | break; | |
5123 | case DECL_POINTER: | |
5124 | attr = "POINTER"; | |
5125 | break; | |
ee7e677f TB |
5126 | case DECL_PROTECTED: |
5127 | attr = "PROTECTED"; | |
5128 | break; | |
6de9cd9a DN |
5129 | case DECL_PRIVATE: |
5130 | attr = "PRIVATE"; | |
5131 | break; | |
5132 | case DECL_PUBLIC: | |
5133 | attr = "PUBLIC"; | |
5134 | break; | |
5135 | case DECL_SAVE: | |
5136 | attr = "SAVE"; | |
5137 | break; | |
34d567d1 FR |
5138 | case DECL_STATIC: |
5139 | attr = "STATIC"; | |
5140 | break; | |
5141 | case DECL_AUTOMATIC: | |
5142 | attr = "AUTOMATIC"; | |
5143 | break; | |
6de9cd9a DN |
5144 | case DECL_TARGET: |
5145 | attr = "TARGET"; | |
5146 | break; | |
a8b3b0b6 CR |
5147 | case DECL_IS_BIND_C: |
5148 | attr = "IS_BIND_C"; | |
5149 | break; | |
5150 | case DECL_VALUE: | |
5151 | attr = "VALUE"; | |
5152 | break; | |
775e6c3a TB |
5153 | case DECL_VOLATILE: |
5154 | attr = "VOLATILE"; | |
5155 | break; | |
6de9cd9a | 5156 | default: |
66e4ab31 | 5157 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
5158 | } |
5159 | ||
5160 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5161 | m = MATCH_ERROR; | |
5162 | goto cleanup; | |
5163 | } | |
5164 | ||
5165 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5166 | to the current attribute. */ | |
5167 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5168 | { | |
5169 | if (seen[d] == 0) | |
5170 | continue; | |
6f855a26 FR |
5171 | else |
5172 | attr_seen = 1; | |
6de9cd9a | 5173 | |
34d567d1 FR |
5174 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5175 | && !flag_dec_static) | |
5176 | { | |
cf004230 FR |
5177 | gfc_error ("%s at %L is a DEC extension, enable with " |
5178 | "%<-fdec-static%>", | |
34d567d1 FR |
5179 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5180 | m = MATCH_ERROR; | |
5181 | goto cleanup; | |
5182 | } | |
5183 | /* Allow SAVE with STATIC, but don't complain. */ | |
5184 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5185 | continue; | |
5186 | ||
6de9cd9a | 5187 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
5188 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5189 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 5190 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 5191 | { |
5046aff5 PT |
5192 | if (d == DECL_ALLOCATABLE) |
5193 | { | |
524af0d6 JB |
5194 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5195 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
5196 | { |
5197 | m = MATCH_ERROR; | |
5198 | goto cleanup; | |
5199 | } | |
636dff67 | 5200 | } |
5bab4c96 PT |
5201 | else if (d == DECL_KIND) |
5202 | { | |
5203 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5204 | "attribute at %C in a TYPE definition")) | |
5205 | { | |
5206 | m = MATCH_ERROR; | |
5207 | goto cleanup; | |
5208 | } | |
5209 | if (current_ts.type != BT_INTEGER) | |
5210 | { | |
5211 | gfc_error ("Component with KIND attribute at %C must be " | |
5212 | "INTEGER"); | |
5213 | m = MATCH_ERROR; | |
5214 | goto cleanup; | |
5215 | } | |
5216 | if (current_ts.kind != gfc_default_integer_kind) | |
5217 | { | |
5218 | gfc_error ("Component with KIND attribute at %C must be " | |
5219 | "default integer kind (%d)", | |
5220 | gfc_default_integer_kind); | |
5221 | m = MATCH_ERROR; | |
5222 | goto cleanup; | |
5223 | } | |
5224 | } | |
5225 | else if (d == DECL_LEN) | |
5226 | { | |
5227 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5228 | "attribute at %C in a TYPE definition")) | |
5229 | { | |
5230 | m = MATCH_ERROR; | |
5231 | goto cleanup; | |
5232 | } | |
5233 | if (current_ts.type != BT_INTEGER) | |
5234 | { | |
5235 | gfc_error ("Component with LEN attribute at %C must be " | |
5236 | "INTEGER"); | |
5237 | m = MATCH_ERROR; | |
5238 | goto cleanup; | |
5239 | } | |
5240 | if (current_ts.kind != gfc_default_integer_kind) | |
5241 | { | |
5242 | gfc_error ("Component with LEN attribute at %C must be " | |
5243 | "default integer kind (%d)", | |
5244 | gfc_default_integer_kind); | |
5245 | m = MATCH_ERROR; | |
5246 | goto cleanup; | |
5247 | } | |
5248 | } | |
636dff67 | 5249 | else |
5046aff5 PT |
5250 | { |
5251 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 5252 | &seen_at[d]); |
5046aff5 PT |
5253 | m = MATCH_ERROR; |
5254 | goto cleanup; | |
5255 | } | |
6de9cd9a DN |
5256 | } |
5257 | ||
4213f93b | 5258 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 5259 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
5260 | { |
5261 | if (d == DECL_PRIVATE) | |
5262 | attr = "PRIVATE"; | |
5263 | else | |
5264 | attr = "PUBLIC"; | |
d51347f9 TB |
5265 | if (gfc_current_state () == COMP_DERIVED |
5266 | && gfc_state_stack->previous | |
5267 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5268 | { | |
524af0d6 | 5269 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 5270 | "at %L in a TYPE definition", attr, |
524af0d6 | 5271 | &seen_at[d])) |
d51347f9 TB |
5272 | { |
5273 | m = MATCH_ERROR; | |
5274 | goto cleanup; | |
5275 | } | |
5276 | } | |
5277 | else | |
5278 | { | |
5279 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5280 | "specification part of a module", attr, &seen_at[d]); | |
5281 | m = MATCH_ERROR; | |
5282 | goto cleanup; | |
5283 | } | |
4213f93b PT |
5284 | } |
5285 | ||
5bab4c96 PT |
5286 | if (gfc_current_state () != COMP_DERIVED |
5287 | && (d == DECL_KIND || d == DECL_LEN)) | |
5288 | { | |
5289 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5290 | "definition", &seen_at[d]); | |
5291 | m = MATCH_ERROR; | |
5292 | goto cleanup; | |
5293 | } | |
5294 | ||
6de9cd9a DN |
5295 | switch (d) |
5296 | { | |
5297 | case DECL_ALLOCATABLE: | |
5298 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5299 | break; | |
5300 | ||
1eee5628 | 5301 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
5302 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5303 | t = false; | |
1eee5628 TB |
5304 | else |
5305 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5306 | break; | |
5307 | ||
be59db2d TB |
5308 | case DECL_CODIMENSION: |
5309 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5310 | break; | |
5311 | ||
fe4e525c | 5312 | case DECL_CONTIGUOUS: |
524af0d6 JB |
5313 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5314 | t = false; | |
fe4e525c TB |
5315 | else |
5316 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5317 | break; | |
5318 | ||
6de9cd9a | 5319 | case DECL_DIMENSION: |
231b2fcc | 5320 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
5321 | break; |
5322 | ||
5323 | case DECL_EXTERNAL: | |
5324 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5325 | break; | |
5326 | ||
5327 | case DECL_IN: | |
5328 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5329 | break; | |
5330 | ||
5331 | case DECL_OUT: | |
5332 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5333 | break; | |
5334 | ||
5335 | case DECL_INOUT: | |
5336 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5337 | break; | |
5338 | ||
5339 | case DECL_INTRINSIC: | |
5340 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5341 | break; | |
5342 | ||
5343 | case DECL_OPTIONAL: | |
5344 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5345 | break; | |
5346 | ||
5bab4c96 PT |
5347 | case DECL_KIND: |
5348 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5349 | break; | |
5350 | ||
5351 | case DECL_LEN: | |
5352 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5353 | break; | |
5354 | ||
6de9cd9a | 5355 | case DECL_PARAMETER: |
231b2fcc | 5356 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
5357 | break; |
5358 | ||
5359 | case DECL_POINTER: | |
5360 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5361 | break; | |
5362 | ||
ee7e677f | 5363 | case DECL_PROTECTED: |
721be0f4 SK |
5364 | if (gfc_current_state () != COMP_MODULE |
5365 | || (gfc_current_ns->proc_name | |
5366 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
5367 | { |
5368 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5369 | "part of a module"); | |
524af0d6 | 5370 | t = false; |
ee7e677f TB |
5371 | break; |
5372 | } | |
5373 | ||
524af0d6 JB |
5374 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5375 | t = false; | |
ee7e677f TB |
5376 | else |
5377 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5378 | break; | |
5379 | ||
6de9cd9a | 5380 | case DECL_PRIVATE: |
231b2fcc TS |
5381 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5382 | &seen_at[d]); | |
6de9cd9a DN |
5383 | break; |
5384 | ||
5385 | case DECL_PUBLIC: | |
231b2fcc TS |
5386 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5387 | &seen_at[d]); | |
6de9cd9a DN |
5388 | break; |
5389 | ||
34d567d1 | 5390 | case DECL_STATIC: |
6de9cd9a | 5391 | case DECL_SAVE: |
80f95228 | 5392 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
5393 | break; |
5394 | ||
34d567d1 FR |
5395 | case DECL_AUTOMATIC: |
5396 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5397 | break; | |
5398 | ||
6de9cd9a DN |
5399 | case DECL_TARGET: |
5400 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5401 | break; | |
5402 | ||
a8b3b0b6 CR |
5403 | case DECL_IS_BIND_C: |
5404 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5405 | break; | |
f5acf0f2 | 5406 | |
06469efd | 5407 | case DECL_VALUE: |
524af0d6 JB |
5408 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5409 | t = false; | |
06469efd PT |
5410 | else |
5411 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5412 | break; | |
5413 | ||
775e6c3a | 5414 | case DECL_VOLATILE: |
524af0d6 JB |
5415 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5416 | t = false; | |
775e6c3a TB |
5417 | else |
5418 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5419 | break; | |
5420 | ||
6de9cd9a DN |
5421 | default: |
5422 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5423 | } | |
5424 | ||
524af0d6 | 5425 | if (!t) |
6de9cd9a DN |
5426 | { |
5427 | m = MATCH_ERROR; | |
5428 | goto cleanup; | |
5429 | } | |
5430 | } | |
5431 | ||
dab2cbf8 | 5432 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
5433 | if ((gfc_current_state () == COMP_MODULE |
5434 | || gfc_current_state () == COMP_SUBMODULE) | |
5435 | && !current_attr.save | |
dab2cbf8 | 5436 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
5437 | current_attr.save = SAVE_IMPLICIT; |
5438 | ||
6de9cd9a DN |
5439 | colon_seen = 1; |
5440 | return MATCH_YES; | |
5441 | ||
5442 | cleanup: | |
63645982 | 5443 | gfc_current_locus = start; |
6de9cd9a DN |
5444 | gfc_free_array_spec (current_as); |
5445 | current_as = NULL; | |
6f855a26 | 5446 | attr_seen = 0; |
6de9cd9a DN |
5447 | return m; |
5448 | } | |
5449 | ||
5450 | ||
a8b3b0b6 CR |
5451 | /* Set the binding label, dest_label, either with the binding label |
5452 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5453 | will be the symbol name in all lower case, as required by the draft | |
5454 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5455 | there is more than one argument (num_idents), it is an error. */ | |
5456 | ||
524af0d6 | 5457 | static bool |
f5acf0f2 | 5458 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 5459 | int num_idents) |
a8b3b0b6 | 5460 | { |
ad4a2f64 | 5461 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 5462 | { |
ad4a2f64 TB |
5463 | gfc_error ("Multiple identifiers provided with " |
5464 | "single NAME= specifier at %C"); | |
524af0d6 | 5465 | return false; |
ad4a2f64 | 5466 | } |
a8b3b0b6 | 5467 | |
62603fae | 5468 | if (curr_binding_label) |
eea58adb | 5469 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 5470 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
5471 | else |
5472 | { | |
5473 | /* No binding label given, and the NAME= specifier did not exist, | |
5474 | which means there was no NAME="". */ | |
5475 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 5476 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 5477 | } |
f5acf0f2 | 5478 | |
524af0d6 | 5479 | return true; |
a8b3b0b6 CR |
5480 | } |
5481 | ||
5482 | ||
5483 | /* Set the status of the given common block as being BIND(C) or not, | |
5484 | depending on the given parameter, is_bind_c. */ | |
5485 | ||
5486 | void | |
5487 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5488 | { | |
5489 | com_block->is_bind_c = is_bind_c; | |
5490 | return; | |
5491 | } | |
5492 | ||
5493 | ||
5494 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5495 | ||
524af0d6 | 5496 | bool |
00820a2a | 5497 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 5498 | { |
bc21d315 | 5499 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 5500 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 5501 | ? true : false; |
00820a2a | 5502 | else if (ts->type == BT_CLASS) |
524af0d6 | 5503 | return false; |
45a69325 | 5504 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 5505 | return false; |
45a69325 | 5506 | |
524af0d6 | 5507 | return true; |
a8b3b0b6 CR |
5508 | } |
5509 | ||
5510 | ||
5511 | /* Verify that the variables of a given common block, which has been | |
5512 | defined with the attribute specifier bind(c), to be of a C | |
5513 | interoperable type. Errors will be reported here, if | |
5514 | encountered. */ | |
5515 | ||
524af0d6 | 5516 | bool |
a8b3b0b6 CR |
5517 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5518 | { | |
5519 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 5520 | bool retval = true; |
a8b3b0b6 CR |
5521 | |
5522 | curr_sym = com_block->head; | |
f5acf0f2 | 5523 | |
a8b3b0b6 CR |
5524 | /* Make sure we have at least one symbol. */ |
5525 | if (curr_sym == NULL) | |
5526 | return retval; | |
5527 | ||
5528 | /* Here we know we have a symbol, so we'll execute this loop | |
5529 | at least once. */ | |
5530 | do | |
5531 | { | |
5532 | /* The second to last param, 1, says this is in a common block. */ | |
5533 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5534 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 5535 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
5536 | |
5537 | return retval; | |
5538 | } | |
5539 | ||
5540 | ||
5541 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5542 | an appropriate error message is reported. */ | |
5543 | ||
524af0d6 | 5544 | bool |
a8b3b0b6 CR |
5545 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5546 | int is_in_common, gfc_common_head *com_block) | |
5547 | { | |
8327f9c2 | 5548 | bool bind_c_function = false; |
524af0d6 | 5549 | bool retval = true; |
d8fa96e0 | 5550 | |
8327f9c2 TB |
5551 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5552 | bind_c_function = true; | |
5553 | ||
d8fa96e0 CR |
5554 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5555 | { | |
5556 | tmp_sym = tmp_sym->result; | |
5557 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 5558 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 5559 | { |
48749dbc MLI |
5560 | gfc_warning (OPT_Wc_binding_type, |
5561 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
5562 | "%L may not be C interoperable", tmp_sym->name, |
5563 | &tmp_sym->declared_at); | |
5564 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5565 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5566 | tmp_sym->ts.is_c_interop = 1; | |
5567 | tmp_sym->attr.is_c_interop = 1; | |
5568 | } | |
5569 | } | |
8327f9c2 | 5570 | |
a8b3b0b6 CR |
5571 | /* Here, we know we have the bind(c) attribute, so if we have |
5572 | enough type info, then verify that it's a C interop kind. | |
5573 | The info could be in the symbol already, or possibly still in | |
5574 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 5575 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 5576 | { |
524af0d6 | 5577 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
5578 | { |
5579 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 5580 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 5581 | { |
48749dbc MLI |
5582 | gfc_warning (OPT_Wc_binding_type, |
5583 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 5584 | "may not be a C interoperable " |
48749dbc | 5585 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
5586 | tmp_sym->name, com_block->name, |
5587 | &(tmp_sym->declared_at), com_block->name); | |
5588 | } | |
5589 | else | |
5590 | { | |
5591 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 5592 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
5593 | "interoperable but it is BIND(C)", |
5594 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 5595 | else if (warn_c_binding_type) |
48749dbc | 5596 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 5597 | "may not be a C interoperable " |
c4100eae | 5598 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
5599 | tmp_sym->name, &(tmp_sym->declared_at)); |
5600 | } | |
5601 | } | |
f5acf0f2 | 5602 | |
a8b3b0b6 CR |
5603 | /* Variables declared w/in a common block can't be bind(c) |
5604 | since there's no way for C to see these variables, so there's | |
5605 | semantically no reason for the attribute. */ | |
5606 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5607 | { | |
c4100eae | 5608 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
5609 | "%L cannot be declared with BIND(C) " |
5610 | "since it is not a global", | |
5611 | tmp_sym->name, com_block->name, | |
5612 | &(tmp_sym->declared_at)); | |
524af0d6 | 5613 | retval = false; |
a8b3b0b6 | 5614 | } |
f5acf0f2 | 5615 | |
a8b3b0b6 CR |
5616 | /* Scalar variables that are bind(c) can not have the pointer |
5617 | or allocatable attributes. */ | |
5618 | if (tmp_sym->attr.is_bind_c == 1) | |
5619 | { | |
5620 | if (tmp_sym->attr.pointer == 1) | |
5621 | { | |
c4100eae | 5622 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5623 | "POINTER and BIND(C) attributes", |
5624 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5625 | retval = false; |
a8b3b0b6 CR |
5626 | } |
5627 | ||
5628 | if (tmp_sym->attr.allocatable == 1) | |
5629 | { | |
c4100eae | 5630 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
5631 | "ALLOCATABLE and BIND(C) attributes", |
5632 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 5633 | retval = false; |
a8b3b0b6 CR |
5634 | } |
5635 | ||
8327f9c2 TB |
5636 | } |
5637 | ||
5638 | /* If it is a BIND(C) function, make sure the return value is a | |
5639 | scalar value. The previous tests in this function made sure | |
5640 | the type is interoperable. */ | |
5641 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 5642 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
5643 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5644 | ||
5645 | /* BIND(C) functions can not return a character string. */ | |
5646 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
5647 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5648 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5649 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 5650 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
5651 | "be a character string", tmp_sym->name, |
5652 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
5653 | } |
5654 | ||
5655 | /* See if the symbol has been marked as private. If it has, make sure | |
5656 | there is no binding label and warn the user if there is one. */ | |
5657 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 5658 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
5659 | /* Use gfc_warning_now because we won't say that the symbol fails |
5660 | just because of this. */ | |
db30e21c | 5661 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 5662 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
5663 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5664 | ||
5665 | return retval; | |
5666 | } | |
5667 | ||
5668 | ||
5669 | /* Set the appropriate fields for a symbol that's been declared as | |
5670 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5671 | the type is C interoperable. Errors are reported by the functions | |
5672 | used to set/test these fields. */ | |
5673 | ||
524af0d6 | 5674 | bool |
a8b3b0b6 CR |
5675 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5676 | { | |
524af0d6 | 5677 | bool retval = true; |
f5acf0f2 | 5678 | |
a8b3b0b6 CR |
5679 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5680 | ||
5681 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5682 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5683 | ||
524af0d6 JB |
5684 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5685 | return false; | |
a8b3b0b6 CR |
5686 | |
5687 | return retval; | |
5688 | } | |
5689 | ||
5690 | ||
5691 | /* Set the fields marking the given common block as BIND(C), including | |
5692 | a binding label, and report any errors encountered. */ | |
5693 | ||
524af0d6 | 5694 | bool |
a8b3b0b6 CR |
5695 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5696 | { | |
524af0d6 | 5697 | bool retval = true; |
f5acf0f2 | 5698 | |
a8b3b0b6 | 5699 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 5700 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
5701 | num_idents)) |
5702 | return false; | |
a8b3b0b6 CR |
5703 | |
5704 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5705 | set_com_block_bind_c (com_block, 1); | |
5706 | ||
5707 | return retval; | |
5708 | } | |
5709 | ||
5710 | ||
5711 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5712 | attribute applies to. */ | |
5713 | ||
524af0d6 | 5714 | bool |
a8b3b0b6 CR |
5715 | get_bind_c_idents (void) |
5716 | { | |
5717 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5718 | int num_idents = 0; | |
5719 | gfc_symbol *tmp_sym = NULL; | |
5720 | match found_id; | |
5721 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 5722 | |
a8b3b0b6 CR |
5723 | if (gfc_match_name (name) == MATCH_YES) |
5724 | { | |
5725 | found_id = MATCH_YES; | |
5726 | gfc_get_ha_symbol (name, &tmp_sym); | |
5727 | } | |
5728 | else if (match_common_name (name) == MATCH_YES) | |
5729 | { | |
5730 | found_id = MATCH_YES; | |
5731 | com_block = gfc_get_common (name, 0); | |
5732 | } | |
5733 | else | |
5734 | { | |
5735 | gfc_error ("Need either entity or common block name for " | |
5736 | "attribute specification statement at %C"); | |
524af0d6 | 5737 | return false; |
a8b3b0b6 | 5738 | } |
f5acf0f2 | 5739 | |
a8b3b0b6 CR |
5740 | /* Save the current identifier and look for more. */ |
5741 | do | |
5742 | { | |
5743 | /* Increment the number of identifiers found for this spec stmt. */ | |
5744 | num_idents++; | |
5745 | ||
5746 | /* Make sure we have a sym or com block, and verify that it can | |
5747 | be bind(c). Set the appropriate field(s) and look for more | |
5748 | identifiers. */ | |
f5acf0f2 | 5749 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
5750 | { |
5751 | if (tmp_sym != NULL) | |
5752 | { | |
524af0d6 JB |
5753 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5754 | return false; | |
a8b3b0b6 CR |
5755 | } |
5756 | else | |
5757 | { | |
524af0d6 JB |
5758 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5759 | return false; | |
a8b3b0b6 | 5760 | } |
f5acf0f2 | 5761 | |
a8b3b0b6 CR |
5762 | /* Look to see if we have another identifier. */ |
5763 | tmp_sym = NULL; | |
5764 | if (gfc_match_eos () == MATCH_YES) | |
5765 | found_id = MATCH_NO; | |
5766 | else if (gfc_match_char (',') != MATCH_YES) | |
5767 | found_id = MATCH_NO; | |
5768 | else if (gfc_match_name (name) == MATCH_YES) | |
5769 | { | |
5770 | found_id = MATCH_YES; | |
5771 | gfc_get_ha_symbol (name, &tmp_sym); | |
5772 | } | |
5773 | else if (match_common_name (name) == MATCH_YES) | |
5774 | { | |
5775 | found_id = MATCH_YES; | |
5776 | com_block = gfc_get_common (name, 0); | |
5777 | } | |
5778 | else | |
5779 | { | |
5780 | gfc_error ("Missing entity or common block name for " | |
5781 | "attribute specification statement at %C"); | |
524af0d6 | 5782 | return false; |
a8b3b0b6 CR |
5783 | } |
5784 | } | |
5785 | else | |
5786 | { | |
5787 | gfc_internal_error ("Missing symbol"); | |
5788 | } | |
5789 | } while (found_id == MATCH_YES); | |
5790 | ||
5791 | /* if we get here we were successful */ | |
524af0d6 | 5792 | return true; |
a8b3b0b6 CR |
5793 | } |
5794 | ||
5795 | ||
5796 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 5797 | |
a8b3b0b6 CR |
5798 | match |
5799 | gfc_match_bind_c_stmt (void) | |
5800 | { | |
5801 | match found_match = MATCH_NO; | |
5802 | gfc_typespec *ts; | |
5803 | ||
5804 | ts = ¤t_ts; | |
f5acf0f2 | 5805 | |
a8b3b0b6 CR |
5806 | /* This may not be necessary. */ |
5807 | gfc_clear_ts (ts); | |
5808 | /* Clear the temporary binding label holder. */ | |
62603fae | 5809 | curr_binding_label = NULL; |
a8b3b0b6 CR |
5810 | |
5811 | /* Look for the bind(c). */ | |
1eabf70a | 5812 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
5813 | |
5814 | if (found_match == MATCH_YES) | |
5815 | { | |
878cdb7b TB |
5816 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5817 | return MATCH_ERROR; | |
5818 | ||
a8b3b0b6 CR |
5819 | /* Look for the :: now, but it is not required. */ |
5820 | gfc_match (" :: "); | |
5821 | ||
5822 | /* Get the identifier(s) that needs to be updated. This may need to | |
5823 | change to hand the flag(s) for the attr specified so all identifiers | |
5824 | found can have all appropriate parts updated (assuming that the same | |
5825 | spec stmt can have multiple attrs, such as both bind(c) and | |
5826 | allocatable...). */ | |
524af0d6 | 5827 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
5828 | /* Error message should have printed already. */ |
5829 | return MATCH_ERROR; | |
5830 | } | |
5831 | ||
5832 | return found_match; | |
5833 | } | |
5834 | ||
5835 | ||
6de9cd9a DN |
5836 | /* Match a data declaration statement. */ |
5837 | ||
5838 | match | |
5839 | gfc_match_data_decl (void) | |
5840 | { | |
5841 | gfc_symbol *sym; | |
5842 | match m; | |
949d5b72 | 5843 | int elem; |
6de9cd9a | 5844 | |
5bab4c96 PT |
5845 | type_param_spec_list = NULL; |
5846 | decl_type_param_list = NULL; | |
5847 | ||
a8b3b0b6 | 5848 | num_idents_on_line = 0; |
f5acf0f2 | 5849 | |
e74f1cc8 | 5850 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
5851 | if (m != MATCH_YES) |
5852 | return m; | |
5853 | ||
2e23972e | 5854 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 5855 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 5856 | { |
bc21d315 | 5857 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
5858 | |
5859 | if (sym == NULL) | |
5860 | { | |
5861 | m = MATCH_ERROR; | |
5862 | goto cleanup; | |
5863 | } | |
5864 | ||
bc21d315 | 5865 | current_ts.u.derived = sym; |
6de9cd9a DN |
5866 | } |
5867 | ||
5868 | m = match_attr_spec (); | |
5869 | if (m == MATCH_ERROR) | |
5870 | { | |
5871 | m = MATCH_NO; | |
5872 | goto cleanup; | |
5873 | } | |
5874 | ||
8b704316 PT |
5875 | if (current_ts.type == BT_CLASS |
5876 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5877 | goto ok; | |
5878 | ||
2e23972e JW |
5879 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5880 | && current_ts.u.derived->components == NULL | |
bc21d315 | 5881 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
5882 | { |
5883 | ||
f6288c24 | 5884 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
5885 | goto ok; |
5886 | ||
00cad178 | 5887 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
bf9f15ee PT |
5888 | goto ok; |
5889 | ||
bc21d315 | 5890 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 5891 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 5892 | |
976e21f6 | 5893 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
5894 | which has its components defined, or be a structure definition |
5895 | actively being parsed. */ | |
5896 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 5897 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
5898 | || current_ts.u.derived->attr.zero_comp |
5899 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
5900 | goto ok; |
5901 | ||
a1b80ec7 JW |
5902 | gfc_error ("Derived type at %C has not been previously defined " |
5903 | "and so cannot appear in a derived type definition"); | |
5904 | m = MATCH_ERROR; | |
5905 | goto cleanup; | |
6de9cd9a DN |
5906 | } |
5907 | ||
5908 | ok: | |
5909 | /* If we have an old-style character declaration, and no new-style | |
5910 | attribute specifications, then there a comma is optional between | |
5911 | the type specification and the variable list. */ | |
5912 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5913 | gfc_match_char (','); | |
5914 | ||
949d5b72 PT |
5915 | /* Give the types/attributes to symbols that follow. Give the element |
5916 | a number so that repeat character length expressions can be copied. */ | |
5917 | elem = 1; | |
6de9cd9a DN |
5918 | for (;;) |
5919 | { | |
a8b3b0b6 | 5920 | num_idents_on_line++; |
949d5b72 | 5921 | m = variable_decl (elem++); |
6de9cd9a DN |
5922 | if (m == MATCH_ERROR) |
5923 | goto cleanup; | |
5924 | if (m == MATCH_NO) | |
5925 | break; | |
5926 | ||
5927 | if (gfc_match_eos () == MATCH_YES) | |
5928 | goto cleanup; | |
5929 | if (gfc_match_char (',') != MATCH_YES) | |
5930 | break; | |
5931 | } | |
5932 | ||
0f447a6e | 5933 | if (!gfc_error_flag_test ()) |
94903212 FR |
5934 | { |
5935 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5936 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5937 | here to avoid confusing the remaining matchers, even if there was an | |
5938 | error during variable_decl. We must flush any such errors. Note this | |
5939 | causes the parser to gracefully continue parsing the remaining input | |
5940 | as a structure body, which likely follows. */ | |
5941 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5942 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5943 | { | |
5944 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5945 | " at %C"); | |
5946 | /* Skip the bad variable_decl and line up for the start of the | |
5947 | structure body. */ | |
5948 | gfc_error_recovery (); | |
5949 | m = MATCH_YES; | |
5950 | goto cleanup; | |
5951 | } | |
5952 | ||
5953 | gfc_error ("Syntax error in data declaration at %C"); | |
5954 | } | |
5955 | ||
6de9cd9a DN |
5956 | m = MATCH_ERROR; |
5957 | ||
a9f6f1f2 JD |
5958 | gfc_free_data_all (gfc_current_ns); |
5959 | ||
6de9cd9a | 5960 | cleanup: |
5bab4c96 PT |
5961 | if (saved_kind_expr) |
5962 | gfc_free_expr (saved_kind_expr); | |
5963 | if (type_param_spec_list) | |
5964 | gfc_free_actual_arglist (type_param_spec_list); | |
5965 | if (decl_type_param_list) | |
5966 | gfc_free_actual_arglist (decl_type_param_list); | |
5967 | saved_kind_expr = NULL; | |
6de9cd9a DN |
5968 | gfc_free_array_spec (current_as); |
5969 | current_as = NULL; | |
5970 | return m; | |
5971 | } | |
5972 | ||
5973 | ||
5974 | /* Match a prefix associated with a function or subroutine | |
5975 | declaration. If the typespec pointer is nonnull, then a typespec | |
5976 | can be matched. Note that if nothing matches, MATCH_YES is | |
5977 | returned (the null string was matched). */ | |
5978 | ||
1c8bcdf7 PT |
5979 | match |
5980 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 5981 | { |
7389bce6 | 5982 | bool seen_type; |
e6c14898 DK |
5983 | bool seen_impure; |
5984 | bool found_prefix; | |
6de9cd9a DN |
5985 | |
5986 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
5987 | seen_type = false; |
5988 | seen_impure = false; | |
6de9cd9a | 5989 | |
3df684e2 DK |
5990 | gcc_assert (!gfc_matching_prefix); |
5991 | gfc_matching_prefix = true; | |
f37e928c | 5992 | |
e6c14898 | 5993 | do |
6de9cd9a | 5994 | { |
e6c14898 | 5995 | found_prefix = false; |
6de9cd9a | 5996 | |
70112e2a PT |
5997 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
5998 | corresponding attribute seems natural and distinguishes these | |
5999 | procedures from procedure types of PROC_MODULE, which these are | |
6000 | as well. */ | |
6001 | if (gfc_match ("module% ") == MATCH_YES) | |
6002 | { | |
6003 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6004 | goto error; | |
6005 | ||
6006 | current_attr.module_procedure = 1; | |
6007 | found_prefix = true; | |
6008 | } | |
6009 | ||
e6c14898 DK |
6010 | if (!seen_type && ts != NULL |
6011 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6012 | && gfc_match_space () == MATCH_YES) | |
6013 | { | |
6de9cd9a | 6014 | |
e6c14898 DK |
6015 | seen_type = true; |
6016 | found_prefix = true; | |
6017 | } | |
6018 | ||
6019 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6020 | { | |
524af0d6 | 6021 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
6022 | goto error; |
6023 | ||
6024 | found_prefix = true; | |
6025 | } | |
6026 | ||
6027 | if (gfc_match ("pure% ") == MATCH_YES) | |
6028 | { | |
524af0d6 | 6029 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
6030 | goto error; |
6031 | ||
6032 | found_prefix = true; | |
6033 | } | |
6de9cd9a | 6034 | |
e6c14898 DK |
6035 | if (gfc_match ("recursive% ") == MATCH_YES) |
6036 | { | |
524af0d6 | 6037 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
6038 | goto error; |
6039 | ||
6040 | found_prefix = true; | |
6041 | } | |
6042 | ||
6043 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6044 | attribute but rather only prevents ELEMENTAL routines from being | |
6045 | automatically PURE. */ | |
6046 | if (gfc_match ("impure% ") == MATCH_YES) | |
6047 | { | |
524af0d6 | 6048 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
6049 | goto error; |
6050 | ||
6051 | seen_impure = true; | |
6052 | found_prefix = true; | |
6053 | } | |
6de9cd9a | 6054 | } |
e6c14898 | 6055 | while (found_prefix); |
6de9cd9a | 6056 | |
e6c14898 DK |
6057 | /* IMPURE and PURE must not both appear, of course. */ |
6058 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 6059 | { |
e6c14898 DK |
6060 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6061 | goto error; | |
6de9cd9a DN |
6062 | } |
6063 | ||
e6c14898 DK |
6064 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6065 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 6066 | { |
524af0d6 | 6067 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 6068 | goto error; |
6de9cd9a DN |
6069 | } |
6070 | ||
6071 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 6072 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 6073 | |
3df684e2 | 6074 | gfc_matching_prefix = false; |
6de9cd9a | 6075 | return MATCH_YES; |
f37e928c DK |
6076 | |
6077 | error: | |
3df684e2 DK |
6078 | gcc_assert (gfc_matching_prefix); |
6079 | gfc_matching_prefix = false; | |
f37e928c | 6080 | return MATCH_ERROR; |
6de9cd9a DN |
6081 | } |
6082 | ||
6083 | ||
1c8bcdf7 | 6084 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 6085 | |
524af0d6 | 6086 | static bool |
636dff67 | 6087 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 6088 | { |
6442a6f4 PT |
6089 | if (dest->module_procedure) |
6090 | { | |
6091 | if (current_attr.elemental) | |
6092 | dest->elemental = 1; | |
6093 | ||
6094 | if (current_attr.pure) | |
6095 | dest->pure = 1; | |
6096 | ||
6097 | if (current_attr.recursive) | |
6098 | dest->recursive = 1; | |
6099 | ||
6100 | /* Module procedures are unusual in that the 'dest' is copied from | |
6101 | the interface declaration. However, this is an oportunity to | |
6102 | check that the submodule declaration is compliant with the | |
6103 | interface. */ | |
6104 | if (dest->elemental && !current_attr.elemental) | |
6105 | { | |
6106 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6107 | "missing at %L", where); | |
6108 | return false; | |
6109 | } | |
6110 | ||
6111 | if (dest->pure && !current_attr.pure) | |
6112 | { | |
6113 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6114 | "missing at %L", where); | |
6115 | return false; | |
6116 | } | |
6117 | ||
6118 | if (dest->recursive && !current_attr.recursive) | |
6119 | { | |
6120 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6121 | "missing at %L", where); | |
6122 | return false; | |
6123 | } | |
6124 | ||
6125 | return true; | |
6126 | } | |
6de9cd9a | 6127 | |
524af0d6 JB |
6128 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6129 | return false; | |
6de9cd9a | 6130 | |
6442a6f4 PT |
6131 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6132 | return false; | |
6133 | ||
524af0d6 JB |
6134 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6135 | return false; | |
6de9cd9a | 6136 | |
524af0d6 | 6137 | return true; |
6de9cd9a DN |
6138 | } |
6139 | ||
6140 | ||
5bab4c96 PT |
6141 | /* Match a formal argument list or, if typeparam is true, a |
6142 | type_param_name_list. */ | |
6de9cd9a DN |
6143 | |
6144 | match | |
5bab4c96 PT |
6145 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6146 | int null_flag, bool typeparam) | |
6de9cd9a DN |
6147 | { |
6148 | gfc_formal_arglist *head, *tail, *p, *q; | |
6149 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6150 | gfc_symbol *sym; | |
6151 | match m; | |
4668d6f9 | 6152 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
6153 | |
6154 | head = tail = NULL; | |
6155 | ||
4668d6f9 PT |
6156 | /* Keep the interface formal argument list and null it so that the |
6157 | matching for the new declaration can be done. The numbers and | |
6158 | names of the arguments are checked here. The interface formal | |
6159 | arguments are retained in formal_arglist and the characteristics | |
6160 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6161 | in get_proc_name about the eventual need to copy the formal_arglist | |
6162 | and populate the formal namespace of the interface symbol. */ | |
6163 | if (progname->attr.module_procedure | |
6164 | && progname->attr.host_assoc) | |
6165 | { | |
6166 | formal = progname->formal; | |
6167 | progname->formal = NULL; | |
6168 | } | |
6169 | ||
6de9cd9a DN |
6170 | if (gfc_match_char ('(') != MATCH_YES) |
6171 | { | |
6172 | if (null_flag) | |
6173 | goto ok; | |
6174 | return MATCH_NO; | |
6175 | } | |
6176 | ||
6177 | if (gfc_match_char (')') == MATCH_YES) | |
6178 | goto ok; | |
6179 | ||
6180 | for (;;) | |
6181 | { | |
6182 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
6183 | { |
6184 | sym = NULL; | |
276515e6 PT |
6185 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6186 | "Alternate-return argument at %C")) | |
9362a03b JW |
6187 | { |
6188 | m = MATCH_ERROR; | |
6189 | goto cleanup; | |
6190 | } | |
276515e6 PT |
6191 | else if (typeparam) |
6192 | gfc_error_now ("A parameter name is required at %C"); | |
9362a03b | 6193 | } |
6de9cd9a DN |
6194 | else |
6195 | { | |
6196 | m = gfc_match_name (name); | |
6197 | if (m != MATCH_YES) | |
276515e6 PT |
6198 | { |
6199 | if(typeparam) | |
6200 | gfc_error_now ("A parameter name is required at %C"); | |
6201 | goto cleanup; | |
6202 | } | |
6de9cd9a | 6203 | |
5bab4c96 PT |
6204 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6205 | goto cleanup; | |
6206 | else if (typeparam | |
6207 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
6de9cd9a DN |
6208 | goto cleanup; |
6209 | } | |
6210 | ||
6211 | p = gfc_get_formal_arglist (); | |
6212 | ||
6213 | if (head == NULL) | |
6214 | head = tail = p; | |
6215 | else | |
6216 | { | |
6217 | tail->next = p; | |
6218 | tail = p; | |
6219 | } | |
6220 | ||
6221 | tail->sym = sym; | |
6222 | ||
6223 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
6224 | dummy procedure. We don't apply these attributes to formal |
6225 | arguments of statement functions. */ | |
6de9cd9a | 6226 | if (sym != NULL && !st_flag |
524af0d6 JB |
6227 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6228 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
6229 | { |
6230 | m = MATCH_ERROR; | |
6231 | goto cleanup; | |
6232 | } | |
6233 | ||
6234 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
6235 | so check for it explicitly. After the statement is accepted, |
6236 | the name is checked for especially in gfc_get_symbol(). */ | |
de624bee | 6237 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
6de9cd9a DN |
6238 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6239 | { | |
c4100eae | 6240 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
6241 | sym->name); |
6242 | m = MATCH_ERROR; | |
6243 | goto cleanup; | |
6244 | } | |
6245 | ||
6246 | if (gfc_match_char (')') == MATCH_YES) | |
6247 | goto ok; | |
6248 | ||
6249 | m = gfc_match_char (','); | |
6250 | if (m != MATCH_YES) | |
6251 | { | |
de624bee PT |
6252 | if (typeparam) |
6253 | gfc_error_now ("Expected parameter list in type declaration " | |
6254 | "at %C"); | |
6255 | else | |
6256 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
6de9cd9a DN |
6257 | goto cleanup; |
6258 | } | |
6259 | } | |
6260 | ||
6261 | ok: | |
6262 | /* Check for duplicate symbols in the formal argument list. */ | |
6263 | if (head != NULL) | |
6264 | { | |
6265 | for (p = head; p->next; p = p->next) | |
6266 | { | |
6267 | if (p->sym == NULL) | |
6268 | continue; | |
6269 | ||
6270 | for (q = p->next; q; q = q->next) | |
6271 | if (p->sym == q->sym) | |
6272 | { | |
de624bee PT |
6273 | if (typeparam) |
6274 | gfc_error_now ("Duplicate name %qs in parameter " | |
6275 | "list at %C", p->sym->name); | |
6276 | else | |
6277 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6278 | "list at %C", p->sym->name); | |
6de9cd9a DN |
6279 | |
6280 | m = MATCH_ERROR; | |
6281 | goto cleanup; | |
6282 | } | |
6283 | } | |
6284 | } | |
6285 | ||
524af0d6 | 6286 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
6287 | { |
6288 | m = MATCH_ERROR; | |
6289 | goto cleanup; | |
6290 | } | |
6291 | ||
e9d9b48d PT |
6292 | /* gfc_error_now used in following and return with MATCH_YES because |
6293 | doing otherwise results in a cascade of extraneous errors and in | |
6294 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 6295 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 6296 | { |
0ef5fbc1 PT |
6297 | bool arg_count_mismatch = false; |
6298 | ||
6299 | if (!formal && head) | |
6300 | arg_count_mismatch = true; | |
6301 | ||
6302 | /* Abbreviated module procedure declaration is not meant to have any | |
6303 | formal arguments! */ | |
e9d9b48d | 6304 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
6305 | arg_count_mismatch = true; |
6306 | ||
4668d6f9 PT |
6307 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6308 | { | |
6309 | if ((p->next != NULL && q->next == NULL) | |
6310 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 6311 | arg_count_mismatch = true; |
4668d6f9 PT |
6312 | else if ((p->sym == NULL && q->sym == NULL) |
6313 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6314 | continue; | |
6315 | else | |
6316 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6317 | "argument names (%s/%s) at %C", | |
6318 | p->sym->name, q->sym->name); | |
6319 | } | |
0ef5fbc1 PT |
6320 | |
6321 | if (arg_count_mismatch) | |
6322 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6323 | "formal arguments at %C"); | |
4668d6f9 PT |
6324 | } |
6325 | ||
6de9cd9a DN |
6326 | return MATCH_YES; |
6327 | ||
6328 | cleanup: | |
6329 | gfc_free_formal_arglist (head); | |
6330 | return m; | |
6331 | } | |
6332 | ||
6333 | ||
6334 | /* Match a RESULT specification following a function declaration or | |
6335 | ENTRY statement. Also matches the end-of-statement. */ | |
6336 | ||
6337 | static match | |
66e4ab31 | 6338 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
6339 | { |
6340 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6341 | gfc_symbol *r; | |
6342 | match m; | |
6343 | ||
6344 | if (gfc_match (" result (") != MATCH_YES) | |
6345 | return MATCH_NO; | |
6346 | ||
6347 | m = gfc_match_name (name); | |
6348 | if (m != MATCH_YES) | |
6349 | return m; | |
6350 | ||
a8b3b0b6 CR |
6351 | /* Get the right paren, and that's it because there could be the |
6352 | bind(c) attribute after the result clause. */ | |
524af0d6 | 6353 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 6354 | { |
a8b3b0b6 | 6355 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
6356 | return MATCH_ERROR; |
6357 | } | |
6358 | ||
6359 | if (strcmp (function->name, name) == 0) | |
6360 | { | |
636dff67 | 6361 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
6362 | return MATCH_ERROR; |
6363 | } | |
6364 | ||
6365 | if (gfc_get_symbol (name, NULL, &r)) | |
6366 | return MATCH_ERROR; | |
6367 | ||
524af0d6 | 6368 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
6369 | return MATCH_ERROR; |
6370 | ||
6371 | *result = r; | |
6372 | ||
6373 | return MATCH_YES; | |
6374 | } | |
6375 | ||
6376 | ||
a8b3b0b6 CR |
6377 | /* Match a function suffix, which could be a combination of a result |
6378 | clause and BIND(C), either one, or neither. The draft does not | |
6379 | require them to come in a specific order. */ | |
6380 | ||
6381 | match | |
6382 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6383 | { | |
6384 | match is_bind_c; /* Found bind(c). */ | |
6385 | match is_result; /* Found result clause. */ | |
6386 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 6387 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 6388 | bool allow_binding_name; |
a8b3b0b6 CR |
6389 | |
6390 | /* Initialize to having found nothing. */ | |
6391 | found_match = MATCH_NO; | |
f5acf0f2 | 6392 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
6393 | is_result = MATCH_NO; |
6394 | ||
6395 | /* Get the next char to narrow between result and bind(c). */ | |
6396 | gfc_gobble_whitespace (); | |
8fc541d3 | 6397 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 6398 | |
1eabf70a TB |
6399 | /* C binding names are not allowed for internal procedures. */ |
6400 | if (gfc_current_state () == COMP_CONTAINS | |
6401 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6402 | allow_binding_name = false; | |
6403 | else | |
6404 | allow_binding_name = true; | |
6405 | ||
a8b3b0b6 CR |
6406 | switch (peek_char) |
6407 | { | |
6408 | case 'r': | |
6409 | /* Look for result clause. */ | |
6410 | is_result = match_result (sym, result); | |
6411 | if (is_result == MATCH_YES) | |
6412 | { | |
6413 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 6414 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6415 | /* We've found the result clause and possibly bind(c). */ |
6416 | found_match = MATCH_YES; | |
6417 | } | |
6418 | else | |
6419 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 6420 | found_match = is_result; |
a8b3b0b6 CR |
6421 | break; |
6422 | case 'b': | |
6423 | /* Look for bind(c) first. */ | |
1eabf70a | 6424 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6425 | if (is_bind_c == MATCH_YES) |
6426 | { | |
6427 | /* Now see if a result clause followed it. */ | |
6428 | is_result = match_result (sym, result); | |
6429 | found_match = MATCH_YES; | |
6430 | } | |
6431 | else | |
6432 | { | |
6433 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6434 | found_match = MATCH_ERROR; | |
6435 | } | |
6436 | break; | |
6437 | default: | |
6438 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6439 | found_match = MATCH_ERROR; | |
6440 | break; | |
6441 | } | |
6442 | ||
a8b3b0b6 | 6443 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 6444 | { |
1eabf70a | 6445 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 6446 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6447 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6448 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6449 | "at %L may not be specified for an internal " | |
6450 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6451 | return MATCH_ERROR; |
6452 | ||
524af0d6 | 6453 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
6454 | return MATCH_ERROR; |
6455 | } | |
f5acf0f2 | 6456 | |
a8b3b0b6 CR |
6457 | return found_match; |
6458 | } | |
6459 | ||
6460 | ||
3070bab4 JW |
6461 | /* Procedure pointer return value without RESULT statement: |
6462 | Add "hidden" result variable named "ppr@". */ | |
6463 | ||
524af0d6 | 6464 | static bool |
3070bab4 JW |
6465 | add_hidden_procptr_result (gfc_symbol *sym) |
6466 | { | |
6467 | bool case1,case2; | |
6468 | ||
6469 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 6470 | return false; |
3070bab4 JW |
6471 | |
6472 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6473 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6474 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6475 | && sym->attr.external; | |
6476 | /* Second usage case: INTERFACE statements. */ | |
6477 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6478 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6479 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6480 | ||
6481 | if (case1 || case2) | |
6482 | { | |
6483 | gfc_symtree *stree; | |
6484 | if (case1) | |
08a6b8e0 | 6485 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
5433e401 | 6486 | else |
c73b6478 JW |
6487 | { |
6488 | gfc_symtree *st2; | |
08a6b8e0 | 6489 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
6490 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6491 | st2->n.sym = stree->n.sym; | |
8c0f9dab | 6492 | stree->n.sym->refs++; |
c73b6478 | 6493 | } |
3070bab4 JW |
6494 | sym->result = stree->n.sym; |
6495 | ||
6496 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6497 | sym->result->attr.pointer = sym->attr.pointer; | |
6498 | sym->result->attr.external = sym->attr.external; | |
6499 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 6500 | sym->result->ts = sym->ts; |
3070bab4 JW |
6501 | sym->attr.proc_pointer = 0; |
6502 | sym->attr.pointer = 0; | |
6503 | sym->attr.external = 0; | |
6504 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6505 | { | |
6506 | sym->result->attr.pointer = 0; | |
6507 | sym->result->attr.proc_pointer = 1; | |
6508 | } | |
6509 | ||
6510 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6511 | } | |
6512 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6513 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6514 | && sym->result && sym->result != sym && sym->result->attr.external | |
6515 | && sym == gfc_current_ns->proc_name | |
6516 | && sym == sym->result->ns->proc_name | |
6517 | && strcmp ("ppr@", sym->result->name) == 0) | |
6518 | { | |
6519 | sym->result->attr.proc_pointer = 1; | |
6520 | sym->attr.pointer = 0; | |
524af0d6 | 6521 | return true; |
3070bab4 JW |
6522 | } |
6523 | else | |
524af0d6 | 6524 | return false; |
3070bab4 JW |
6525 | } |
6526 | ||
6527 | ||
713485cc JW |
6528 | /* Match the interface for a PROCEDURE declaration, |
6529 | including brackets (R1212). */ | |
69773742 JW |
6530 | |
6531 | static match | |
713485cc | 6532 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
6533 | { |
6534 | match m; | |
3276e0b3 | 6535 | gfc_symtree *st; |
69773742 | 6536 | locus old_loc, entry_loc; |
3276e0b3 PT |
6537 | gfc_namespace *old_ns = gfc_current_ns; |
6538 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 6539 | |
3276e0b3 | 6540 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
6541 | gfc_clear_ts (¤t_ts); |
6542 | ||
6543 | if (gfc_match (" (") != MATCH_YES) | |
6544 | { | |
6545 | gfc_current_locus = entry_loc; | |
6546 | return MATCH_NO; | |
6547 | } | |
6548 | ||
6549 | /* Get the type spec. for the procedure interface. */ | |
6550 | old_loc = gfc_current_locus; | |
e74f1cc8 | 6551 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 6552 | gfc_gobble_whitespace (); |
8fc541d3 | 6553 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
6554 | goto got_ts; |
6555 | ||
6556 | if (m == MATCH_ERROR) | |
6557 | return m; | |
6558 | ||
3276e0b3 | 6559 | /* Procedure interface is itself a procedure. */ |
69773742 | 6560 | gfc_current_locus = old_loc; |
3276e0b3 | 6561 | m = gfc_match_name (name); |
69773742 | 6562 | |
3276e0b3 PT |
6563 | /* First look to see if it is already accessible in the current |
6564 | namespace because it is use associated or contained. */ | |
6565 | st = NULL; | |
6566 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6567 | return MATCH_ERROR; | |
6568 | ||
6569 | /* If it is still not found, then try the parent namespace, if it | |
6570 | exists and create the symbol there if it is still not found. */ | |
6571 | if (gfc_current_ns->parent) | |
6572 | gfc_current_ns = gfc_current_ns->parent; | |
6573 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6574 | return MATCH_ERROR; | |
6575 | ||
6576 | gfc_current_ns = old_ns; | |
6577 | *proc_if = st->n.sym; | |
69773742 | 6578 | |
713485cc | 6579 | if (*proc_if) |
69773742 | 6580 | { |
713485cc | 6581 | (*proc_if)->refs++; |
bb343a6c TB |
6582 | /* Resolve interface if possible. That way, attr.procedure is only set |
6583 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 6584 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
6585 | while ((*proc_if)->ts.interface |
6586 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 6587 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 6588 | |
0e8d854e JW |
6589 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6590 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 6591 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 6592 | (*proc_if)->name, NULL)) |
0e8d854e | 6593 | return MATCH_ERROR; |
69773742 JW |
6594 | } |
6595 | ||
6596 | got_ts: | |
69773742 JW |
6597 | if (gfc_match (" )") != MATCH_YES) |
6598 | { | |
6599 | gfc_current_locus = entry_loc; | |
6600 | return MATCH_NO; | |
6601 | } | |
6602 | ||
713485cc JW |
6603 | return MATCH_YES; |
6604 | } | |
6605 | ||
6606 | ||
6607 | /* Match a PROCEDURE declaration (R1211). */ | |
6608 | ||
6609 | static match | |
6610 | match_procedure_decl (void) | |
6611 | { | |
6612 | match m; | |
6613 | gfc_symbol *sym, *proc_if = NULL; | |
6614 | int num; | |
6615 | gfc_expr *initializer = NULL; | |
6616 | ||
1cc0e193 | 6617 | /* Parse interface (with brackets). */ |
713485cc JW |
6618 | m = match_procedure_interface (&proc_if); |
6619 | if (m != MATCH_YES) | |
6620 | return m; | |
6621 | ||
6622 | /* Parse attributes (with colons). */ | |
69773742 JW |
6623 | m = match_attr_spec(); |
6624 | if (m == MATCH_ERROR) | |
6625 | return MATCH_ERROR; | |
6626 | ||
0859be17 TB |
6627 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6628 | { | |
6629 | current_attr.is_bind_c = 1; | |
6630 | has_name_equals = 0; | |
6631 | curr_binding_label = NULL; | |
6632 | } | |
6633 | ||
69773742 JW |
6634 | /* Get procedure symbols. */ |
6635 | for(num=1;;num++) | |
6636 | { | |
69773742 JW |
6637 | m = gfc_match_symbol (&sym, 0); |
6638 | if (m == MATCH_NO) | |
6639 | goto syntax; | |
6640 | else if (m == MATCH_ERROR) | |
6641 | return m; | |
6642 | ||
6643 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6644 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
6645 | return MATCH_ERROR; |
6646 | ||
6647 | if (sym->attr.is_bind_c) | |
6648 | { | |
6649 | /* Check for C1218. */ | |
6650 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6651 | { | |
6652 | gfc_error ("BIND(C) attribute at %C requires " | |
6653 | "an interface with BIND(C)"); | |
6654 | return MATCH_ERROR; | |
6655 | } | |
6656 | /* Check for C1217. */ | |
6657 | if (has_name_equals && sym->attr.pointer) | |
6658 | { | |
6659 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6660 | "POINTER attribute at %C"); | |
6661 | return MATCH_ERROR; | |
6662 | } | |
6663 | if (has_name_equals && sym->attr.dummy) | |
6664 | { | |
6665 | gfc_error ("Dummy procedure at %C may not have " | |
6666 | "BIND(C) attribute with NAME"); | |
6667 | return MATCH_ERROR; | |
6668 | } | |
6669 | /* Set binding label for BIND(C). */ | |
524af0d6 | 6670 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
6671 | return MATCH_ERROR; |
6672 | } | |
6673 | ||
524af0d6 | 6674 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 6675 | return MATCH_ERROR; |
3070bab4 | 6676 | |
524af0d6 | 6677 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6678 | sym = sym->result; |
6679 | ||
524af0d6 | 6680 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
6681 | return MATCH_ERROR; |
6682 | ||
6683 | /* Set interface. */ | |
6684 | if (proc_if != NULL) | |
6cc309c9 | 6685 | { |
1d146030 JW |
6686 | if (sym->ts.type != BT_UNKNOWN) |
6687 | { | |
c4100eae | 6688 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
6689 | sym->name, &gfc_current_locus, |
6690 | gfc_basic_typename (sym->ts.type)); | |
6691 | return MATCH_ERROR; | |
6692 | } | |
32d99e68 | 6693 | sym->ts.interface = proc_if; |
6cc309c9 | 6694 | sym->attr.untyped = 1; |
c73b6478 | 6695 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 6696 | } |
69773742 JW |
6697 | else if (current_ts.type != BT_UNKNOWN) |
6698 | { | |
524af0d6 | 6699 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 6700 | return MATCH_ERROR; |
32d99e68 JW |
6701 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6702 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 6703 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 6704 | sym->ts.interface->attr.function = 1; |
d91909c0 | 6705 | sym->attr.function = 1; |
c73b6478 | 6706 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
6707 | } |
6708 | ||
8fb74da4 JW |
6709 | if (gfc_match (" =>") == MATCH_YES) |
6710 | { | |
6711 | if (!current_attr.pointer) | |
6712 | { | |
6713 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6714 | m = MATCH_ERROR; | |
6715 | goto cleanup; | |
6716 | } | |
6717 | ||
80f95228 | 6718 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
6719 | if (m != MATCH_YES) |
6720 | goto cleanup; | |
6721 | ||
524af0d6 | 6722 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
6723 | goto cleanup; |
6724 | ||
6725 | } | |
6726 | ||
69773742 JW |
6727 | if (gfc_match_eos () == MATCH_YES) |
6728 | return MATCH_YES; | |
6729 | if (gfc_match_char (',') != MATCH_YES) | |
6730 | goto syntax; | |
6731 | } | |
6732 | ||
6733 | syntax: | |
6734 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6735 | return MATCH_ERROR; | |
8fb74da4 JW |
6736 | |
6737 | cleanup: | |
6738 | /* Free stuff up and return. */ | |
6739 | gfc_free_expr (initializer); | |
6740 | return m; | |
69773742 JW |
6741 | } |
6742 | ||
6743 | ||
713485cc JW |
6744 | static match |
6745 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6746 | ||
6747 | ||
6748 | /* Match a procedure pointer component declaration (R445). */ | |
6749 | ||
6750 | static match | |
6751 | match_ppc_decl (void) | |
6752 | { | |
6753 | match m; | |
6754 | gfc_symbol *proc_if = NULL; | |
6755 | gfc_typespec ts; | |
6756 | int num; | |
6757 | gfc_component *c; | |
6758 | gfc_expr *initializer = NULL; | |
6759 | gfc_typebound_proc* tb; | |
6760 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6761 | ||
6762 | /* Parse interface (with brackets). */ | |
6763 | m = match_procedure_interface (&proc_if); | |
6764 | if (m != MATCH_YES) | |
6765 | goto syntax; | |
6766 | ||
6767 | /* Parse attributes. */ | |
6768 | tb = XCNEW (gfc_typebound_proc); | |
6769 | tb->where = gfc_current_locus; | |
6770 | m = match_binding_attributes (tb, false, true); | |
6771 | if (m == MATCH_ERROR) | |
6772 | return m; | |
6773 | ||
713485cc JW |
6774 | gfc_clear_attr (¤t_attr); |
6775 | current_attr.procedure = 1; | |
6776 | current_attr.proc_pointer = 1; | |
6777 | current_attr.access = tb->access; | |
6778 | current_attr.flavor = FL_PROCEDURE; | |
6779 | ||
6780 | /* Match the colons (required). */ | |
6781 | if (gfc_match (" ::") != MATCH_YES) | |
6782 | { | |
a4d9b221 | 6783 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
6784 | return MATCH_ERROR; |
6785 | } | |
6786 | ||
6787 | /* Check for C450. */ | |
6788 | if (!tb->nopass && proc_if == NULL) | |
6789 | { | |
6790 | gfc_error("NOPASS or explicit interface required at %C"); | |
6791 | return MATCH_ERROR; | |
6792 | } | |
6793 | ||
524af0d6 | 6794 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
6795 | return MATCH_ERROR; |
6796 | ||
713485cc JW |
6797 | /* Match PPC names. */ |
6798 | ts = current_ts; | |
6799 | for(num=1;;num++) | |
6800 | { | |
6801 | m = gfc_match_name (name); | |
6802 | if (m == MATCH_NO) | |
6803 | goto syntax; | |
6804 | else if (m == MATCH_ERROR) | |
6805 | return m; | |
6806 | ||
524af0d6 | 6807 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
6808 | return MATCH_ERROR; |
6809 | ||
6810 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 6811 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
6812 | return MATCH_ERROR; |
6813 | ||
524af0d6 | 6814 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
6815 | return MATCH_ERROR; |
6816 | ||
524af0d6 | 6817 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
6818 | return MATCH_ERROR; |
6819 | ||
2be03814 TB |
6820 | if (num == 1) |
6821 | c->tb = tb; | |
6822 | else | |
6823 | { | |
6824 | c->tb = XCNEW (gfc_typebound_proc); | |
6825 | c->tb->where = gfc_current_locus; | |
6826 | *c->tb = *tb; | |
6827 | } | |
90661f26 | 6828 | |
713485cc JW |
6829 | /* Set interface. */ |
6830 | if (proc_if != NULL) | |
6831 | { | |
6832 | c->ts.interface = proc_if; | |
6833 | c->attr.untyped = 1; | |
6834 | c->attr.if_source = IFSRC_IFBODY; | |
6835 | } | |
6836 | else if (ts.type != BT_UNKNOWN) | |
6837 | { | |
6838 | c->ts = ts; | |
6839 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 6840 | c->ts.interface->result = c->ts.interface; |
713485cc | 6841 | c->ts.interface->ts = ts; |
d91909c0 | 6842 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 6843 | c->ts.interface->attr.function = 1; |
d91909c0 | 6844 | c->attr.function = 1; |
713485cc JW |
6845 | c->attr.if_source = IFSRC_UNKNOWN; |
6846 | } | |
6847 | ||
6848 | if (gfc_match (" =>") == MATCH_YES) | |
6849 | { | |
80f95228 | 6850 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
6851 | if (m != MATCH_YES) |
6852 | { | |
6853 | gfc_free_expr (initializer); | |
6854 | return m; | |
6855 | } | |
6856 | c->initializer = initializer; | |
6857 | } | |
6858 | ||
6859 | if (gfc_match_eos () == MATCH_YES) | |
6860 | return MATCH_YES; | |
6861 | if (gfc_match_char (',') != MATCH_YES) | |
6862 | goto syntax; | |
6863 | } | |
6864 | ||
6865 | syntax: | |
6866 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6867 | return MATCH_ERROR; | |
6868 | } | |
6869 | ||
6870 | ||
69773742 JW |
6871 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6872 | ||
6873 | static match | |
6874 | match_procedure_in_interface (void) | |
6875 | { | |
6876 | match m; | |
6877 | gfc_symbol *sym; | |
6878 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 6879 | locus old_locus; |
69773742 JW |
6880 | |
6881 | if (current_interface.type == INTERFACE_NAMELESS | |
6882 | || current_interface.type == INTERFACE_ABSTRACT) | |
6883 | { | |
6884 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6885 | return MATCH_ERROR; | |
6886 | } | |
6887 | ||
a6fcd41a TB |
6888 | /* Check if the F2008 optional double colon appears. */ |
6889 | gfc_gobble_whitespace (); | |
6890 | old_locus = gfc_current_locus; | |
6891 | if (gfc_match ("::") == MATCH_YES) | |
6892 | { | |
524af0d6 JB |
6893 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6894 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
6895 | return MATCH_ERROR; |
6896 | } | |
6897 | else | |
6898 | gfc_current_locus = old_locus; | |
6899 | ||
69773742 JW |
6900 | for(;;) |
6901 | { | |
6902 | m = gfc_match_name (name); | |
6903 | if (m == MATCH_NO) | |
6904 | goto syntax; | |
6905 | else if (m == MATCH_ERROR) | |
6906 | return m; | |
6907 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6908 | return MATCH_ERROR; | |
6909 | ||
524af0d6 | 6910 | if (!gfc_add_interface (sym)) |
69773742 JW |
6911 | return MATCH_ERROR; |
6912 | ||
69773742 JW |
6913 | if (gfc_match_eos () == MATCH_YES) |
6914 | break; | |
6915 | if (gfc_match_char (',') != MATCH_YES) | |
6916 | goto syntax; | |
6917 | } | |
6918 | ||
6919 | return MATCH_YES; | |
6920 | ||
6921 | syntax: | |
6922 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6923 | return MATCH_ERROR; | |
6924 | } | |
6925 | ||
6926 | ||
6927 | /* General matcher for PROCEDURE declarations. */ | |
6928 | ||
30b608eb DK |
6929 | static match match_procedure_in_type (void); |
6930 | ||
69773742 JW |
6931 | match |
6932 | gfc_match_procedure (void) | |
6933 | { | |
6934 | match m; | |
6935 | ||
6936 | switch (gfc_current_state ()) | |
6937 | { | |
6938 | case COMP_NONE: | |
6939 | case COMP_PROGRAM: | |
6940 | case COMP_MODULE: | |
4668d6f9 | 6941 | case COMP_SUBMODULE: |
69773742 JW |
6942 | case COMP_SUBROUTINE: |
6943 | case COMP_FUNCTION: | |
3547d57e | 6944 | case COMP_BLOCK: |
69773742 JW |
6945 | m = match_procedure_decl (); |
6946 | break; | |
6947 | case COMP_INTERFACE: | |
6948 | m = match_procedure_in_interface (); | |
6949 | break; | |
6950 | case COMP_DERIVED: | |
713485cc JW |
6951 | m = match_ppc_decl (); |
6952 | break; | |
30b608eb DK |
6953 | case COMP_DERIVED_CONTAINS: |
6954 | m = match_procedure_in_type (); | |
6955 | break; | |
69773742 JW |
6956 | default: |
6957 | return MATCH_NO; | |
6958 | } | |
6959 | ||
6960 | if (m != MATCH_YES) | |
6961 | return m; | |
6962 | ||
524af0d6 | 6963 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
6964 | return MATCH_ERROR; |
6965 | ||
6966 | return m; | |
6967 | } | |
6968 | ||
6969 | ||
c3005b0f DK |
6970 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
6971 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
6972 | parser-state-stack to find out whether we're in a module. */ | |
6973 | ||
6974 | static void | |
73e42eef | 6975 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
6976 | { |
6977 | bool in_module; | |
6978 | ||
6979 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
6980 | && (gfc_state_stack->previous->state == COMP_MODULE |
6981 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
6982 | |
6983 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
6984 | } | |
6985 | ||
6986 | ||
6de9cd9a DN |
6987 | /* Match a function declaration. */ |
6988 | ||
6989 | match | |
6990 | gfc_match_function_decl (void) | |
6991 | { | |
6992 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6993 | gfc_symbol *sym, *result; | |
6994 | locus old_loc; | |
6995 | match m; | |
a8b3b0b6 | 6996 | match suffix_match; |
f5acf0f2 | 6997 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
6998 | |
6999 | if (gfc_current_state () != COMP_NONE | |
7000 | && gfc_current_state () != COMP_INTERFACE | |
7001 | && gfc_current_state () != COMP_CONTAINS) | |
7002 | return MATCH_NO; | |
7003 | ||
7004 | gfc_clear_ts (¤t_ts); | |
7005 | ||
63645982 | 7006 | old_loc = gfc_current_locus; |
6de9cd9a | 7007 | |
1c8bcdf7 | 7008 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
7009 | if (m != MATCH_YES) |
7010 | { | |
63645982 | 7011 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7012 | return m; |
7013 | } | |
7014 | ||
7015 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7016 | { | |
63645982 | 7017 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7018 | return MATCH_NO; |
7019 | } | |
4668d6f9 | 7020 | |
1a492601 | 7021 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7022 | return MATCH_ERROR; |
3070bab4 | 7023 | |
524af0d6 | 7024 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7025 | sym = sym->result; |
7026 | ||
4668d6f9 PT |
7027 | if (current_attr.module_procedure) |
7028 | sym->attr.module_procedure = 1; | |
7029 | ||
6de9cd9a DN |
7030 | gfc_new_block = sym; |
7031 | ||
7032 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7033 | if (m == MATCH_NO) | |
2b9a33ae TS |
7034 | { |
7035 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 7036 | "definition at %C"); |
2b9a33ae TS |
7037 | m = MATCH_ERROR; |
7038 | goto cleanup; | |
7039 | } | |
6de9cd9a DN |
7040 | else if (m == MATCH_ERROR) |
7041 | goto cleanup; | |
7042 | ||
7043 | result = NULL; | |
7044 | ||
a8b3b0b6 CR |
7045 | /* According to the draft, the bind(c) and result clause can |
7046 | come in either order after the formal_arg_list (i.e., either | |
7047 | can be first, both can exist together or by themselves or neither | |
7048 | one). Therefore, the match_result can't match the end of the | |
7049 | string, and check for the bind(c) or result clause in either order. */ | |
7050 | found_match = gfc_match_eos (); | |
7051 | ||
7052 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7053 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7054 | not allowed for procedures. */ | |
7055 | if (sym->attr.is_bind_c == 1) | |
7056 | { | |
7057 | sym->attr.is_bind_c = 0; | |
7058 | if (sym->old_symbol != NULL) | |
7059 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7060 | "variables or common blocks", | |
7061 | &(sym->old_symbol->declared_at)); | |
7062 | else | |
7063 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7064 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
7065 | } |
7066 | ||
a8b3b0b6 | 7067 | if (found_match != MATCH_YES) |
6de9cd9a | 7068 | { |
a8b3b0b6 CR |
7069 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7070 | suffix_match = gfc_match_suffix (sym, &result); | |
7071 | if (suffix_match == MATCH_YES) | |
7072 | /* Need to get the eos now. */ | |
7073 | found_match = gfc_match_eos (); | |
7074 | else | |
7075 | found_match = suffix_match; | |
6de9cd9a DN |
7076 | } |
7077 | ||
a8b3b0b6 CR |
7078 | if(found_match != MATCH_YES) |
7079 | m = MATCH_ERROR; | |
6de9cd9a DN |
7080 | else |
7081 | { | |
a8b3b0b6 CR |
7082 | /* Make changes to the symbol. */ |
7083 | m = MATCH_ERROR; | |
f5acf0f2 | 7084 | |
524af0d6 | 7085 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 7086 | goto cleanup; |
f5acf0f2 | 7087 | |
70112e2a | 7088 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 7089 | goto cleanup; |
6de9cd9a | 7090 | |
70112e2a PT |
7091 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7092 | { | |
7093 | if(!sym->attr.module_procedure) | |
7094 | goto cleanup; | |
7095 | else | |
7096 | gfc_error_check (); | |
7097 | } | |
7098 | ||
a99d95a2 | 7099 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 7100 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
7101 | sym->declared_at = old_loc; |
7102 | if (current_ts.type != BT_UNKNOWN) | |
7103 | current_ts.kind = -1; | |
7104 | else | |
7105 | current_ts.kind = 0; | |
1c8bcdf7 | 7106 | |
a8b3b0b6 CR |
7107 | if (result == NULL) |
7108 | { | |
6de7294f | 7109 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7110 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7111 | goto cleanup; |
a8b3b0b6 CR |
7112 | sym->result = sym; |
7113 | } | |
7114 | else | |
7115 | { | |
6de7294f | 7116 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 7117 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 7118 | goto cleanup; |
a8b3b0b6 CR |
7119 | sym->result = result; |
7120 | } | |
7121 | ||
c3005b0f | 7122 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 7123 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 7124 | |
a8b3b0b6 CR |
7125 | return MATCH_YES; |
7126 | } | |
6de9cd9a DN |
7127 | |
7128 | cleanup: | |
63645982 | 7129 | gfc_current_locus = old_loc; |
6de9cd9a DN |
7130 | return m; |
7131 | } | |
7132 | ||
636dff67 SK |
7133 | |
7134 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7135 | pass the name of the entry, rather than the gfc_current_block name, and | |
7136 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
7137 | |
7138 | static bool | |
3a43b5b3 TB |
7139 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7140 | locus *where) | |
68ea355b PT |
7141 | { |
7142 | gfc_gsymbol *s; | |
32e8bb8e | 7143 | enum gfc_symbol_type type; |
68ea355b | 7144 | |
7389bce6 | 7145 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 7146 | |
f11de7c5 TB |
7147 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7148 | name is a global identifier. */ | |
7149 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 7150 | { |
f11de7c5 TB |
7151 | s = gfc_get_gsymbol (name); |
7152 | ||
7153 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7154 | { | |
3a43b5b3 | 7155 | gfc_global_used (s, where); |
f11de7c5 TB |
7156 | return false; |
7157 | } | |
7158 | else | |
7159 | { | |
7160 | s->type = type; | |
77f8682b | 7161 | s->sym_name = name; |
3a43b5b3 | 7162 | s->where = *where; |
f11de7c5 TB |
7163 | s->defined = 1; |
7164 | s->ns = gfc_current_ns; | |
7165 | } | |
68ea355b | 7166 | } |
f11de7c5 TB |
7167 | |
7168 | /* Don't add the symbol multiple times. */ | |
7169 | if (binding_label | |
7170 | && (!gfc_notification_std (GFC_STD_F2008) | |
7171 | || strcmp (name, binding_label) != 0)) | |
7172 | { | |
7173 | s = gfc_get_gsymbol (binding_label); | |
7174 | ||
7175 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7176 | { | |
3a43b5b3 | 7177 | gfc_global_used (s, where); |
f11de7c5 TB |
7178 | return false; |
7179 | } | |
7180 | else | |
7181 | { | |
7182 | s->type = type; | |
77f8682b | 7183 | s->sym_name = name; |
f11de7c5 | 7184 | s->binding_label = binding_label; |
3a43b5b3 | 7185 | s->where = *where; |
f11de7c5 TB |
7186 | s->defined = 1; |
7187 | s->ns = gfc_current_ns; | |
7188 | } | |
7189 | } | |
7190 | ||
7191 | return true; | |
68ea355b | 7192 | } |
6de9cd9a | 7193 | |
636dff67 | 7194 | |
6de9cd9a DN |
7195 | /* Match an ENTRY statement. */ |
7196 | ||
7197 | match | |
7198 | gfc_match_entry (void) | |
7199 | { | |
3d79abbd PB |
7200 | gfc_symbol *proc; |
7201 | gfc_symbol *result; | |
7202 | gfc_symbol *entry; | |
6de9cd9a DN |
7203 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7204 | gfc_compile_state state; | |
7205 | match m; | |
3d79abbd | 7206 | gfc_entry_list *el; |
c96cfa49 | 7207 | locus old_loc; |
1a492601 | 7208 | bool module_procedure; |
bc3e7a8c TB |
7209 | char peek_char; |
7210 | match is_bind_c; | |
6de9cd9a DN |
7211 | |
7212 | m = gfc_match_name (name); | |
7213 | if (m != MATCH_YES) | |
7214 | return m; | |
7215 | ||
524af0d6 | 7216 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
7217 | return MATCH_ERROR; |
7218 | ||
3d79abbd | 7219 | state = gfc_current_state (); |
4c93c95a | 7220 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 7221 | { |
4c93c95a FXC |
7222 | switch (state) |
7223 | { | |
7224 | case COMP_PROGRAM: | |
7225 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7226 | break; | |
7227 | case COMP_MODULE: | |
7228 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7229 | break; | |
4668d6f9 PT |
7230 | case COMP_SUBMODULE: |
7231 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7232 | break; | |
4c93c95a | 7233 | case COMP_BLOCK_DATA: |
636dff67 SK |
7234 | gfc_error ("ENTRY statement at %C cannot appear within " |
7235 | "a BLOCK DATA"); | |
4c93c95a FXC |
7236 | break; |
7237 | case COMP_INTERFACE: | |
636dff67 SK |
7238 | gfc_error ("ENTRY statement at %C cannot appear within " |
7239 | "an INTERFACE"); | |
4c93c95a | 7240 | break; |
f6288c24 FR |
7241 | case COMP_STRUCTURE: |
7242 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7243 | "a STRUCTURE block"); | |
7244 | break; | |
4c93c95a | 7245 | case COMP_DERIVED: |
636dff67 SK |
7246 | gfc_error ("ENTRY statement at %C cannot appear within " |
7247 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
7248 | break; |
7249 | case COMP_IF: | |
636dff67 SK |
7250 | gfc_error ("ENTRY statement at %C cannot appear within " |
7251 | "an IF-THEN block"); | |
4c93c95a FXC |
7252 | break; |
7253 | case COMP_DO: | |
8c6a85e3 | 7254 | case COMP_DO_CONCURRENT: |
636dff67 SK |
7255 | gfc_error ("ENTRY statement at %C cannot appear within " |
7256 | "a DO block"); | |
4c93c95a FXC |
7257 | break; |
7258 | case COMP_SELECT: | |
636dff67 SK |
7259 | gfc_error ("ENTRY statement at %C cannot appear within " |
7260 | "a SELECT block"); | |
4c93c95a FXC |
7261 | break; |
7262 | case COMP_FORALL: | |
636dff67 SK |
7263 | gfc_error ("ENTRY statement at %C cannot appear within " |
7264 | "a FORALL block"); | |
4c93c95a FXC |
7265 | break; |
7266 | case COMP_WHERE: | |
636dff67 SK |
7267 | gfc_error ("ENTRY statement at %C cannot appear within " |
7268 | "a WHERE block"); | |
4c93c95a FXC |
7269 | break; |
7270 | case COMP_CONTAINS: | |
636dff67 SK |
7271 | gfc_error ("ENTRY statement at %C cannot appear within " |
7272 | "a contained subprogram"); | |
4c93c95a FXC |
7273 | break; |
7274 | default: | |
fce523bf | 7275 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 7276 | } |
3d79abbd PB |
7277 | return MATCH_ERROR; |
7278 | } | |
7279 | ||
5f0ba745 SK |
7280 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7281 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7282 | { | |
7283 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7284 | return MATCH_ERROR; | |
7285 | } | |
7286 | ||
1a492601 | 7287 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
7288 | && gfc_current_ns->parent->proc_name |
7289 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7290 | == FL_MODULE; | |
1a492601 | 7291 | |
3d79abbd PB |
7292 | if (gfc_current_ns->parent != NULL |
7293 | && gfc_current_ns->parent->proc_name | |
1a492601 | 7294 | && !module_procedure) |
3d79abbd PB |
7295 | { |
7296 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7297 | "contained procedure"); | |
7298 | return MATCH_ERROR; | |
7299 | } | |
7300 | ||
1a492601 PT |
7301 | /* Module function entries need special care in get_proc_name |
7302 | because previous references within the function will have | |
7303 | created symbols attached to the current namespace. */ | |
7304 | if (get_proc_name (name, &entry, | |
7305 | gfc_current_ns->parent != NULL | |
ecd3b73c | 7306 | && module_procedure)) |
6de9cd9a DN |
7307 | return MATCH_ERROR; |
7308 | ||
3d79abbd PB |
7309 | proc = gfc_current_block (); |
7310 | ||
bc3e7a8c TB |
7311 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7312 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7313 | not allowed for procedures. */ | |
7314 | if (entry->attr.is_bind_c == 1) | |
7315 | { | |
7316 | entry->attr.is_bind_c = 0; | |
7317 | if (entry->old_symbol != NULL) | |
7318 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7319 | "variables or common blocks", | |
7320 | &(entry->old_symbol->declared_at)); | |
7321 | else | |
7322 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7323 | "variables or common blocks", &gfc_current_locus); | |
7324 | } | |
f5acf0f2 | 7325 | |
bc3e7a8c TB |
7326 | /* Check what next non-whitespace character is so we can tell if there |
7327 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 7328 | old_loc = gfc_current_locus; |
bc3e7a8c | 7329 | gfc_gobble_whitespace (); |
8fc541d3 | 7330 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 7331 | |
3d79abbd | 7332 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 7333 | { |
6de9cd9a DN |
7334 | m = gfc_match_formal_arglist (entry, 0, 1); |
7335 | if (m != MATCH_YES) | |
7336 | return MATCH_ERROR; | |
7337 | ||
1eabf70a TB |
7338 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7339 | never be an internal procedure. */ | |
7340 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
7341 | if (is_bind_c == MATCH_ERROR) |
7342 | return MATCH_ERROR; | |
7343 | if (is_bind_c == MATCH_YES) | |
7344 | { | |
7345 | if (peek_char != '(') | |
7346 | { | |
7347 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7348 | return MATCH_ERROR; | |
7349 | } | |
70112e2a | 7350 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 7351 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
7352 | return MATCH_ERROR; |
7353 | } | |
7354 | ||
f11de7c5 | 7355 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
7356 | && !add_global_entry (name, entry->binding_label, true, |
7357 | &old_loc)) | |
f11de7c5 TB |
7358 | return MATCH_ERROR; |
7359 | ||
7360 | /* An entry in a subroutine. */ | |
524af0d6 JB |
7361 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7362 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 7363 | return MATCH_ERROR; |
3d79abbd PB |
7364 | } |
7365 | else | |
7366 | { | |
c96cfa49 | 7367 | /* An entry in a function. |
636dff67 SK |
7368 | We need to take special care because writing |
7369 | ENTRY f() | |
7370 | as | |
7371 | ENTRY f | |
7372 | is allowed, whereas | |
7373 | ENTRY f() RESULT (r) | |
7374 | can't be written as | |
7375 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
7376 | if (gfc_match_eos () == MATCH_YES) |
7377 | { | |
7378 | gfc_current_locus = old_loc; | |
7379 | /* Match the empty argument list, and add the interface to | |
7380 | the symbol. */ | |
7381 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7382 | } | |
7383 | else | |
7384 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7385 | ||
6de9cd9a DN |
7386 | if (m != MATCH_YES) |
7387 | return MATCH_ERROR; | |
7388 | ||
6de9cd9a DN |
7389 | result = NULL; |
7390 | ||
7391 | if (gfc_match_eos () == MATCH_YES) | |
7392 | { | |
524af0d6 JB |
7393 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7394 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
7395 | return MATCH_ERROR; |
7396 | ||
d198b59a | 7397 | entry->result = entry; |
6de9cd9a DN |
7398 | } |
7399 | else | |
7400 | { | |
bc3e7a8c | 7401 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
7402 | if (m == MATCH_NO) |
7403 | gfc_syntax_error (ST_ENTRY); | |
7404 | if (m != MATCH_YES) | |
7405 | return MATCH_ERROR; | |
7406 | ||
bc3e7a8c TB |
7407 | if (result) |
7408 | { | |
524af0d6 JB |
7409 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7410 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7411 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
7412 | return MATCH_ERROR; |
7413 | entry->result = result; | |
7414 | } | |
7415 | else | |
7416 | { | |
524af0d6 JB |
7417 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7418 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
7419 | return MATCH_ERROR; |
7420 | entry->result = entry; | |
7421 | } | |
6de9cd9a | 7422 | } |
f11de7c5 TB |
7423 | |
7424 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
7425 | && !add_global_entry (name, entry->binding_label, false, |
7426 | &old_loc)) | |
f11de7c5 | 7427 | return MATCH_ERROR; |
6de9cd9a DN |
7428 | } |
7429 | ||
7430 | if (gfc_match_eos () != MATCH_YES) | |
7431 | { | |
7432 | gfc_syntax_error (ST_ENTRY); | |
7433 | return MATCH_ERROR; | |
7434 | } | |
7435 | ||
3d79abbd PB |
7436 | entry->attr.recursive = proc->attr.recursive; |
7437 | entry->attr.elemental = proc->attr.elemental; | |
7438 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 7439 | |
3d79abbd PB |
7440 | el = gfc_get_entry_list (); |
7441 | el->sym = entry; | |
7442 | el->next = gfc_current_ns->entries; | |
7443 | gfc_current_ns->entries = el; | |
7444 | if (el->next) | |
7445 | el->id = el->next->id + 1; | |
7446 | else | |
7447 | el->id = 1; | |
6de9cd9a | 7448 | |
3d79abbd PB |
7449 | new_st.op = EXEC_ENTRY; |
7450 | new_st.ext.entry = el; | |
7451 | ||
7452 | return MATCH_YES; | |
6de9cd9a DN |
7453 | } |
7454 | ||
7455 | ||
7456 | /* Match a subroutine statement, including optional prefixes. */ | |
7457 | ||
7458 | match | |
7459 | gfc_match_subroutine (void) | |
7460 | { | |
7461 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7462 | gfc_symbol *sym; | |
7463 | match m; | |
a8b3b0b6 CR |
7464 | match is_bind_c; |
7465 | char peek_char; | |
1eabf70a | 7466 | bool allow_binding_name; |
6de9cd9a DN |
7467 | |
7468 | if (gfc_current_state () != COMP_NONE | |
7469 | && gfc_current_state () != COMP_INTERFACE | |
7470 | && gfc_current_state () != COMP_CONTAINS) | |
7471 | return MATCH_NO; | |
7472 | ||
1c8bcdf7 | 7473 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
7474 | if (m != MATCH_YES) |
7475 | return m; | |
7476 | ||
7477 | m = gfc_match ("subroutine% %n", name); | |
7478 | if (m != MATCH_YES) | |
7479 | return m; | |
7480 | ||
1a492601 | 7481 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 7482 | return MATCH_ERROR; |
3070bab4 | 7483 | |
7fcd5ad5 | 7484 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 7485 | the symbol existed before. */ |
7fcd5ad5 TB |
7486 | sym->declared_at = gfc_current_locus; |
7487 | ||
4668d6f9 PT |
7488 | if (current_attr.module_procedure) |
7489 | sym->attr.module_procedure = 1; | |
7490 | ||
524af0d6 | 7491 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
7492 | sym = sym->result; |
7493 | ||
6de9cd9a DN |
7494 | gfc_new_block = sym; |
7495 | ||
a8b3b0b6 | 7496 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 7497 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 7498 | gfc_gobble_whitespace (); |
8fc541d3 | 7499 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 7500 | |
524af0d6 | 7501 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
7502 | return MATCH_ERROR; |
7503 | ||
7504 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7505 | return MATCH_ERROR; | |
7506 | ||
a8b3b0b6 CR |
7507 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7508 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7509 | not allowed for procedures. */ | |
7510 | if (sym->attr.is_bind_c == 1) | |
7511 | { | |
7512 | sym->attr.is_bind_c = 0; | |
7513 | if (sym->old_symbol != NULL) | |
7514 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7515 | "variables or common blocks", | |
7516 | &(sym->old_symbol->declared_at)); | |
7517 | else | |
7518 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7519 | "variables or common blocks", &gfc_current_locus); | |
7520 | } | |
1eabf70a TB |
7521 | |
7522 | /* C binding names are not allowed for internal procedures. */ | |
7523 | if (gfc_current_state () == COMP_CONTAINS | |
7524 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7525 | allow_binding_name = false; | |
7526 | else | |
7527 | allow_binding_name = true; | |
7528 | ||
a8b3b0b6 CR |
7529 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7530 | so, then we need to make sure it's all correct. If it doesn't, | |
7531 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 7532 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
7533 | if (is_bind_c == MATCH_ERROR) |
7534 | { | |
7535 | /* There was an attempt at the bind(c), but it was wrong. An | |
7536 | error message should have been printed w/in the gfc_match_bind_c | |
7537 | so here we'll just return the MATCH_ERROR. */ | |
7538 | return MATCH_ERROR; | |
7539 | } | |
7540 | ||
7541 | if (is_bind_c == MATCH_YES) | |
7542 | { | |
1eabf70a | 7543 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 7544 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 7545 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
7546 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7547 | "at %L may not be specified for an internal " | |
7548 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
7549 | return MATCH_ERROR; |
7550 | ||
a8b3b0b6 CR |
7551 | if (peek_char != '(') |
7552 | { | |
7553 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7554 | return MATCH_ERROR; | |
7555 | } | |
70112e2a | 7556 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 7557 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
7558 | return MATCH_ERROR; |
7559 | } | |
f5acf0f2 | 7560 | |
6de9cd9a DN |
7561 | if (gfc_match_eos () != MATCH_YES) |
7562 | { | |
7563 | gfc_syntax_error (ST_SUBROUTINE); | |
7564 | return MATCH_ERROR; | |
7565 | } | |
7566 | ||
524af0d6 | 7567 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
7568 | { |
7569 | if(!sym->attr.module_procedure) | |
7570 | return MATCH_ERROR; | |
7571 | else | |
7572 | gfc_error_check (); | |
7573 | } | |
6de9cd9a | 7574 | |
c3005b0f | 7575 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 7576 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 7577 | |
6de9cd9a DN |
7578 | return MATCH_YES; |
7579 | } | |
7580 | ||
7581 | ||
3b37ccd4 FXC |
7582 | /* Check that the NAME identifier in a BIND attribute or statement |
7583 | is conform to C identifier rules. */ | |
7584 | ||
7585 | match | |
7586 | check_bind_name_identifier (char **name) | |
7587 | { | |
7588 | char *n = *name, *p; | |
7589 | ||
7590 | /* Remove leading spaces. */ | |
7591 | while (*n == ' ') | |
7592 | n++; | |
7593 | ||
7594 | /* On an empty string, free memory and set name to NULL. */ | |
7595 | if (*n == '\0') | |
7596 | { | |
7597 | free (*name); | |
7598 | *name = NULL; | |
7599 | return MATCH_YES; | |
7600 | } | |
7601 | ||
7602 | /* Remove trailing spaces. */ | |
7603 | p = n + strlen(n) - 1; | |
7604 | while (*p == ' ') | |
7605 | *(p--) = '\0'; | |
7606 | ||
7607 | /* Insert the identifier into the symbol table. */ | |
7608 | p = xstrdup (n); | |
7609 | free (*name); | |
7610 | *name = p; | |
7611 | ||
7612 | /* Now check that identifier is valid under C rules. */ | |
7613 | if (ISDIGIT (*p)) | |
7614 | { | |
7615 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7616 | return MATCH_ERROR; | |
7617 | } | |
7618 | ||
7619 | for (; *p; p++) | |
7620 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7621 | { | |
7622 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7623 | return MATCH_ERROR; | |
7624 | } | |
7625 | ||
7626 | return MATCH_YES; | |
7627 | } | |
7628 | ||
7629 | ||
a8b3b0b6 CR |
7630 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7631 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 7632 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
7633 | encounter the BIND(C) before the declaration itself. Return |
7634 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7635 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7636 | or MATCH_YES if the specifier was correct and the binding label and | |
7637 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
7638 | current_ts. If allow_binding_name is false, no binding name may be |
7639 | given. */ | |
a8b3b0b6 CR |
7640 | |
7641 | match | |
1eabf70a | 7642 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 7643 | { |
3b37ccd4 FXC |
7644 | char *binding_label = NULL; |
7645 | gfc_expr *e = NULL; | |
a8b3b0b6 | 7646 | |
f5acf0f2 | 7647 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
7648 | specifier or not. */ |
7649 | has_name_equals = 0; | |
7650 | ||
a8b3b0b6 CR |
7651 | /* This much we have to be able to match, in this order, if |
7652 | there is a bind(c) label. */ | |
7653 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7654 | return MATCH_NO; | |
7655 | ||
7656 | /* Now see if there is a binding label, or if we've reached the | |
7657 | end of the bind(c) attribute without one. */ | |
7658 | if (gfc_match_char (',') == MATCH_YES) | |
7659 | { | |
7660 | if (gfc_match (" name = ") != MATCH_YES) | |
7661 | { | |
7662 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7663 | "at %C"); | |
7664 | /* should give an error message here */ | |
7665 | return MATCH_ERROR; | |
7666 | } | |
7667 | ||
7668 | has_name_equals = 1; | |
7669 | ||
3b37ccd4 FXC |
7670 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7671 | { | |
7672 | gfc_free_expr (e); | |
7673 | return MATCH_ERROR; | |
7674 | } | |
f5acf0f2 | 7675 | |
3b37ccd4 | 7676 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 7677 | { |
3b37ccd4 FXC |
7678 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7679 | gfc_free_expr (e); | |
7680 | return MATCH_ERROR; | |
a8b3b0b6 | 7681 | } |
3b37ccd4 FXC |
7682 | |
7683 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7684 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 7685 | { |
3b37ccd4 FXC |
7686 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7687 | "default character kind"); | |
7688 | gfc_free_expr(e); | |
7689 | return MATCH_ERROR; | |
a8b3b0b6 | 7690 | } |
3b37ccd4 FXC |
7691 | |
7692 | // Get a C string from the Fortran string constant | |
7693 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7694 | e->value.character.length); | |
7695 | gfc_free_expr(e); | |
7696 | ||
7697 | // Check that it is valid (old gfc_match_name_C) | |
7698 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7699 | return MATCH_ERROR; | |
7700 | } | |
a8b3b0b6 CR |
7701 | |
7702 | /* Get the required right paren. */ | |
7703 | if (gfc_match_char (')') != MATCH_YES) | |
7704 | { | |
7705 | gfc_error ("Missing closing paren for binding label at %C"); | |
7706 | return MATCH_ERROR; | |
7707 | } | |
7708 | ||
1eabf70a TB |
7709 | if (has_name_equals && !allow_binding_name) |
7710 | { | |
7711 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7712 | return MATCH_ERROR; | |
7713 | } | |
7714 | ||
7715 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7716 | { | |
7717 | gfc_error ("For dummy procedure %s, no binding name is " | |
7718 | "allowed in BIND(C) at %C", sym->name); | |
7719 | return MATCH_ERROR; | |
7720 | } | |
7721 | ||
7722 | ||
a8b3b0b6 CR |
7723 | /* Save the binding label to the symbol. If sym is null, we're |
7724 | probably matching the typespec attributes of a declaration and | |
7725 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 7726 | if (binding_label) |
a8b3b0b6 CR |
7727 | { |
7728 | if (sym != NULL) | |
62603fae | 7729 | sym->binding_label = binding_label; |
a8b3b0b6 | 7730 | else |
62603fae | 7731 | curr_binding_label = binding_label; |
a8b3b0b6 | 7732 | } |
1eabf70a | 7733 | else if (allow_binding_name) |
a8b3b0b6 CR |
7734 | { |
7735 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
7736 | can set the label for it here. |
7737 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 7738 | created. */ |
a8b3b0b6 | 7739 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 7740 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 7741 | } |
9e1d712c | 7742 | |
129d15a3 JW |
7743 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7744 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
7745 | { |
7746 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7747 | return MATCH_ERROR; | |
7748 | } | |
7749 | ||
a8b3b0b6 CR |
7750 | return MATCH_YES; |
7751 | } | |
7752 | ||
7753 | ||
1f2959f0 | 7754 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
7755 | |
7756 | static int | |
7757 | contained_procedure (void) | |
7758 | { | |
083de129 | 7759 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 7760 | |
083de129 TB |
7761 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7762 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7763 | return 1; | |
ddc9ce91 TS |
7764 | |
7765 | return 0; | |
7766 | } | |
7767 | ||
d51347f9 | 7768 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
7769 | interoperable with the corresponding C enumeration type, making |
7770 | sure that -fshort-enums is honored. */ | |
7771 | ||
7772 | static void | |
7773 | set_enum_kind(void) | |
7774 | { | |
7775 | enumerator_history *current_history = NULL; | |
7776 | int kind; | |
7777 | int i; | |
7778 | ||
7779 | if (max_enum == NULL || enum_history == NULL) | |
7780 | return; | |
7781 | ||
cab129d1 | 7782 | if (!flag_short_enums) |
d51347f9 TB |
7783 | return; |
7784 | ||
25d8f0a2 TS |
7785 | i = 0; |
7786 | do | |
7787 | { | |
7788 | kind = gfc_integer_kinds[i++].kind; | |
7789 | } | |
d51347f9 | 7790 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
7791 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7792 | kind) != ARITH_OK); | |
7793 | ||
7794 | current_history = enum_history; | |
7795 | while (current_history != NULL) | |
7796 | { | |
7797 | current_history->sym->ts.kind = kind; | |
7798 | current_history = current_history->next; | |
7799 | } | |
7800 | } | |
7801 | ||
636dff67 | 7802 | |
6de9cd9a | 7803 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
7804 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7805 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
7806 | |
7807 | match | |
636dff67 | 7808 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
7809 | { |
7810 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7811 | gfc_compile_state state; | |
7812 | locus old_loc; | |
7813 | const char *block_name; | |
7814 | const char *target; | |
ddc9ce91 | 7815 | int eos_ok; |
6de9cd9a | 7816 | match m; |
0cab6b73 TK |
7817 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7818 | gfc_namespace **nsp; | |
63af1586 | 7819 | bool abreviated_modproc_decl = false; |
874108a9 | 7820 | bool got_matching_end = false; |
6de9cd9a | 7821 | |
63645982 | 7822 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7823 | if (gfc_match ("end") != MATCH_YES) |
7824 | return MATCH_NO; | |
7825 | ||
7826 | state = gfc_current_state (); | |
636dff67 SK |
7827 | block_name = gfc_current_block () == NULL |
7828 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 7829 | |
03af1e4c | 7830 | switch (state) |
6de9cd9a | 7831 | { |
03af1e4c DK |
7832 | case COMP_ASSOCIATE: |
7833 | case COMP_BLOCK: | |
2eb3745a | 7834 | if (gfc_str_startswith (block_name, "block@")) |
03af1e4c DK |
7835 | block_name = NULL; |
7836 | break; | |
7837 | ||
7838 | case COMP_CONTAINS: | |
7839 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 7840 | state = gfc_state_stack->previous->state; |
636dff67 SK |
7841 | block_name = gfc_state_stack->previous->sym == NULL |
7842 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
7843 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7844 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
7845 | break; |
7846 | ||
7847 | default: | |
7848 | break; | |
6de9cd9a DN |
7849 | } |
7850 | ||
63af1586 PT |
7851 | if (!abreviated_modproc_decl) |
7852 | abreviated_modproc_decl = gfc_current_block () | |
7853 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 7854 | |
6de9cd9a DN |
7855 | switch (state) |
7856 | { | |
7857 | case COMP_NONE: | |
7858 | case COMP_PROGRAM: | |
7859 | *st = ST_END_PROGRAM; | |
7860 | target = " program"; | |
ddc9ce91 | 7861 | eos_ok = 1; |
6de9cd9a DN |
7862 | break; |
7863 | ||
7864 | case COMP_SUBROUTINE: | |
7865 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 7866 | if (!abreviated_modproc_decl) |
6de9cd9a | 7867 | target = " subroutine"; |
4668d6f9 PT |
7868 | else |
7869 | target = " procedure"; | |
ddc9ce91 | 7870 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7871 | break; |
7872 | ||
7873 | case COMP_FUNCTION: | |
7874 | *st = ST_END_FUNCTION; | |
4668d6f9 | 7875 | if (!abreviated_modproc_decl) |
6de9cd9a | 7876 | target = " function"; |
4668d6f9 PT |
7877 | else |
7878 | target = " procedure"; | |
ddc9ce91 | 7879 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
7880 | break; |
7881 | ||
7882 | case COMP_BLOCK_DATA: | |
7883 | *st = ST_END_BLOCK_DATA; | |
7884 | target = " block data"; | |
ddc9ce91 | 7885 | eos_ok = 1; |
6de9cd9a DN |
7886 | break; |
7887 | ||
7888 | case COMP_MODULE: | |
7889 | *st = ST_END_MODULE; | |
7890 | target = " module"; | |
ddc9ce91 | 7891 | eos_ok = 1; |
6de9cd9a DN |
7892 | break; |
7893 | ||
4668d6f9 PT |
7894 | case COMP_SUBMODULE: |
7895 | *st = ST_END_SUBMODULE; | |
7896 | target = " submodule"; | |
7897 | eos_ok = 1; | |
7898 | break; | |
7899 | ||
6de9cd9a DN |
7900 | case COMP_INTERFACE: |
7901 | *st = ST_END_INTERFACE; | |
7902 | target = " interface"; | |
ddc9ce91 | 7903 | eos_ok = 0; |
6de9cd9a DN |
7904 | break; |
7905 | ||
f6288c24 FR |
7906 | case COMP_MAP: |
7907 | *st = ST_END_MAP; | |
7908 | target = " map"; | |
7909 | eos_ok = 0; | |
7910 | break; | |
7911 | ||
7912 | case COMP_UNION: | |
7913 | *st = ST_END_UNION; | |
7914 | target = " union"; | |
7915 | eos_ok = 0; | |
7916 | break; | |
7917 | ||
7918 | case COMP_STRUCTURE: | |
7919 | *st = ST_END_STRUCTURE; | |
7920 | target = " structure"; | |
7921 | eos_ok = 0; | |
7922 | break; | |
7923 | ||
6de9cd9a | 7924 | case COMP_DERIVED: |
30b608eb | 7925 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
7926 | *st = ST_END_TYPE; |
7927 | target = " type"; | |
ddc9ce91 | 7928 | eos_ok = 0; |
6de9cd9a DN |
7929 | break; |
7930 | ||
03af1e4c DK |
7931 | case COMP_ASSOCIATE: |
7932 | *st = ST_END_ASSOCIATE; | |
7933 | target = " associate"; | |
7934 | eos_ok = 0; | |
7935 | break; | |
7936 | ||
9abe5e56 DK |
7937 | case COMP_BLOCK: |
7938 | *st = ST_END_BLOCK; | |
7939 | target = " block"; | |
7940 | eos_ok = 0; | |
7941 | break; | |
7942 | ||
6de9cd9a DN |
7943 | case COMP_IF: |
7944 | *st = ST_ENDIF; | |
7945 | target = " if"; | |
ddc9ce91 | 7946 | eos_ok = 0; |
6de9cd9a DN |
7947 | break; |
7948 | ||
7949 | case COMP_DO: | |
8c6a85e3 | 7950 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
7951 | *st = ST_ENDDO; |
7952 | target = " do"; | |
ddc9ce91 | 7953 | eos_ok = 0; |
6de9cd9a DN |
7954 | break; |
7955 | ||
d0a4a61c TB |
7956 | case COMP_CRITICAL: |
7957 | *st = ST_END_CRITICAL; | |
7958 | target = " critical"; | |
7959 | eos_ok = 0; | |
7960 | break; | |
7961 | ||
6de9cd9a | 7962 | case COMP_SELECT: |
cf2b3c22 | 7963 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
7964 | *st = ST_END_SELECT; |
7965 | target = " select"; | |
ddc9ce91 | 7966 | eos_ok = 0; |
6de9cd9a DN |
7967 | break; |
7968 | ||
7969 | case COMP_FORALL: | |
7970 | *st = ST_END_FORALL; | |
7971 | target = " forall"; | |
ddc9ce91 | 7972 | eos_ok = 0; |
6de9cd9a DN |
7973 | break; |
7974 | ||
7975 | case COMP_WHERE: | |
7976 | *st = ST_END_WHERE; | |
7977 | target = " where"; | |
ddc9ce91 | 7978 | eos_ok = 0; |
6de9cd9a DN |
7979 | break; |
7980 | ||
25d8f0a2 TS |
7981 | case COMP_ENUM: |
7982 | *st = ST_END_ENUM; | |
7983 | target = " enum"; | |
7984 | eos_ok = 0; | |
7985 | last_initializer = NULL; | |
7986 | set_enum_kind (); | |
7987 | gfc_free_enum_history (); | |
7988 | break; | |
7989 | ||
6de9cd9a DN |
7990 | default: |
7991 | gfc_error ("Unexpected END statement at %C"); | |
7992 | goto cleanup; | |
7993 | } | |
7994 | ||
3a43b5b3 | 7995 | old_loc = gfc_current_locus; |
6de9cd9a DN |
7996 | if (gfc_match_eos () == MATCH_YES) |
7997 | { | |
272001a2 TB |
7998 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
7999 | { | |
524af0d6 | 8000 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 8001 | "instead of %s statement at %L", |
4668d6f9 PT |
8002 | abreviated_modproc_decl ? "END PROCEDURE" |
8003 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
8004 | goto cleanup; |
8005 | } | |
8006 | else if (!eos_ok) | |
6de9cd9a | 8007 | { |
66e4ab31 | 8008 | /* We would have required END [something]. */ |
59ce85b5 TS |
8009 | gfc_error ("%s statement expected at %L", |
8010 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
8011 | goto cleanup; |
8012 | } | |
8013 | ||
8014 | return MATCH_YES; | |
8015 | } | |
8016 | ||
8017 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8018 | if (gfc_match (target) != MATCH_YES) | |
8019 | { | |
4668d6f9 PT |
8020 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8021 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
8022 | goto cleanup; |
8023 | } | |
874108a9 AV |
8024 | else |
8025 | got_matching_end = true; | |
6de9cd9a | 8026 | |
3a43b5b3 | 8027 | old_loc = gfc_current_locus; |
6de9cd9a DN |
8028 | /* If we're at the end, make sure a block name wasn't required. */ |
8029 | if (gfc_match_eos () == MATCH_YES) | |
8030 | { | |
8031 | ||
690af379 | 8032 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 8033 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 8034 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
8035 | return MATCH_YES; |
8036 | ||
9abe5e56 | 8037 | if (!block_name) |
6de9cd9a DN |
8038 | return MATCH_YES; |
8039 | ||
c4100eae | 8040 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 8041 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
8042 | |
8043 | return MATCH_ERROR; | |
8044 | } | |
8045 | ||
8046 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8047 | if (*st == ST_END_INTERFACE) | |
8048 | return gfc_match_end_interface (); | |
8049 | ||
66e4ab31 SK |
8050 | /* We haven't hit the end of statement, so what is left must be an |
8051 | end-name. */ | |
6de9cd9a DN |
8052 | m = gfc_match_space (); |
8053 | if (m == MATCH_YES) | |
8054 | m = gfc_match_name (name); | |
8055 | ||
8056 | if (m == MATCH_NO) | |
8057 | gfc_error ("Expected terminating name at %C"); | |
8058 | if (m != MATCH_YES) | |
8059 | goto cleanup; | |
8060 | ||
8061 | if (block_name == NULL) | |
8062 | goto syntax; | |
8063 | ||
3d5dc929 PT |
8064 | /* We have to pick out the declared submodule name from the composite |
8065 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8066 | if (state == COMP_SUBMODULE) | |
8067 | block_name = strchr (block_name, '.') + 1; | |
8068 | ||
3070bab4 | 8069 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 8070 | { |
c4100eae | 8071 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
8072 | gfc_ascii_statement (*st)); |
8073 | goto cleanup; | |
8074 | } | |
3070bab4 JW |
8075 | /* Procedure pointer as function result. */ |
8076 | else if (strcmp (block_name, "ppr@") == 0 | |
8077 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8078 | { | |
c4100eae | 8079 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
8080 | gfc_current_block ()->ns->proc_name->name, |
8081 | gfc_ascii_statement (*st)); | |
8082 | goto cleanup; | |
8083 | } | |
6de9cd9a DN |
8084 | |
8085 | if (gfc_match_eos () == MATCH_YES) | |
8086 | return MATCH_YES; | |
8087 | ||
8088 | syntax: | |
8089 | gfc_syntax_error (*st); | |
8090 | ||
8091 | cleanup: | |
63645982 | 8092 | gfc_current_locus = old_loc; |
0cab6b73 TK |
8093 | |
8094 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8095 | Remove it from the parent namespace's sibling list. */ | |
8096 | ||
874108a9 | 8097 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
8098 | { |
8099 | parent_ns = gfc_current_ns->parent; | |
8100 | ||
8101 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8102 | ||
8103 | prev_ns = NULL; | |
8104 | ns = *nsp; | |
8105 | while (ns) | |
8106 | { | |
8107 | if (ns == gfc_current_ns) | |
8108 | { | |
8109 | if (prev_ns == NULL) | |
8110 | *nsp = NULL; | |
8111 | else | |
8112 | prev_ns->sibling = ns->sibling; | |
8113 | } | |
8114 | prev_ns = ns; | |
8115 | ns = ns->sibling; | |
8116 | } | |
874108a9 | 8117 | |
0cab6b73 TK |
8118 | gfc_free_namespace (gfc_current_ns); |
8119 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
8120 | gfc_state_stack = gfc_state_stack->previous; |
8121 | state = gfc_current_state (); | |
0cab6b73 TK |
8122 | } |
8123 | ||
6de9cd9a DN |
8124 | return MATCH_ERROR; |
8125 | } | |
8126 | ||
8127 | ||
8128 | ||
8129 | /***************** Attribute declaration statements ****************/ | |
8130 | ||
8131 | /* Set the attribute of a single variable. */ | |
8132 | ||
8133 | static match | |
8134 | attr_decl1 (void) | |
8135 | { | |
8136 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8137 | gfc_array_spec *as; | |
97440db5 ML |
8138 | |
8139 | /* Workaround -Wmaybe-uninitialized false positive during | |
8140 | profiledbootstrap by initializing them. */ | |
8141 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
8142 | locus var_locus; |
8143 | match m; | |
8144 | ||
8145 | as = NULL; | |
8146 | ||
8147 | m = gfc_match_name (name); | |
8148 | if (m != MATCH_YES) | |
8149 | goto cleanup; | |
8150 | ||
08a6b8e0 | 8151 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
8152 | return MATCH_ERROR; |
8153 | ||
524af0d6 | 8154 | if (!check_function_name (name)) |
bb9de0c4 JW |
8155 | { |
8156 | m = MATCH_ERROR; | |
8157 | goto cleanup; | |
8158 | } | |
f5acf0f2 | 8159 | |
63645982 | 8160 | var_locus = gfc_current_locus; |
6de9cd9a DN |
8161 | |
8162 | /* Deal with possible array specification for certain attributes. */ | |
8163 | if (current_attr.dimension | |
be59db2d | 8164 | || current_attr.codimension |
6de9cd9a DN |
8165 | || current_attr.allocatable |
8166 | || current_attr.pointer | |
8167 | || current_attr.target) | |
8168 | { | |
be59db2d TB |
8169 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8170 | !current_attr.dimension | |
8171 | && !current_attr.pointer | |
8172 | && !current_attr.target); | |
6de9cd9a DN |
8173 | if (m == MATCH_ERROR) |
8174 | goto cleanup; | |
8175 | ||
8176 | if (current_attr.dimension && m == MATCH_NO) | |
8177 | { | |
636dff67 SK |
8178 | gfc_error ("Missing array specification at %L in DIMENSION " |
8179 | "statement", &var_locus); | |
6de9cd9a DN |
8180 | m = MATCH_ERROR; |
8181 | goto cleanup; | |
8182 | } | |
8183 | ||
1283ab12 TB |
8184 | if (current_attr.dimension && sym->value) |
8185 | { | |
8186 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 8187 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
8188 | m = MATCH_ERROR; |
8189 | goto cleanup; | |
8190 | } | |
8191 | ||
be59db2d TB |
8192 | if (current_attr.codimension && m == MATCH_NO) |
8193 | { | |
8194 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8195 | "statement", &var_locus); | |
8196 | m = MATCH_ERROR; | |
8197 | goto cleanup; | |
8198 | } | |
8199 | ||
6de9cd9a DN |
8200 | if ((current_attr.allocatable || current_attr.pointer) |
8201 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8202 | { | |
636dff67 | 8203 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
8204 | m = MATCH_ERROR; |
8205 | goto cleanup; | |
8206 | } | |
8207 | } | |
8208 | ||
2e23972e JW |
8209 | /* Update symbol table. DIMENSION attribute is set in |
8210 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 8211 | to the first component, or '_data' field. */ |
d40477b4 | 8212 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 8213 | { |
524af0d6 | 8214 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8215 | { |
8216 | m = MATCH_ERROR; | |
8217 | goto cleanup; | |
8218 | } | |
2e23972e JW |
8219 | } |
8220 | else | |
8221 | { | |
be59db2d | 8222 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 8223 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
8224 | { |
8225 | m = MATCH_ERROR; | |
8226 | goto cleanup; | |
8227 | } | |
6de9cd9a | 8228 | } |
f5acf0f2 | 8229 | |
528622fd | 8230 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 8231 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
8232 | { |
8233 | m = MATCH_ERROR; | |
8234 | goto cleanup; | |
8235 | } | |
6de9cd9a | 8236 | |
524af0d6 | 8237 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
8238 | { |
8239 | m = MATCH_ERROR; | |
8240 | goto cleanup; | |
8241 | } | |
d51347f9 | 8242 | |
83d890b9 AL |
8243 | if (sym->attr.cray_pointee && sym->as != NULL) |
8244 | { | |
8245 | /* Fix the array spec. */ | |
f5acf0f2 | 8246 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
8247 | if (m == MATCH_ERROR) |
8248 | goto cleanup; | |
8249 | } | |
6de9cd9a | 8250 | |
524af0d6 | 8251 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
8252 | { |
8253 | m = MATCH_ERROR; | |
8254 | goto cleanup; | |
8255 | } | |
8256 | ||
6de9cd9a DN |
8257 | if ((current_attr.external || current_attr.intrinsic) |
8258 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 8259 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
8260 | { |
8261 | m = MATCH_ERROR; | |
8262 | goto cleanup; | |
8263 | } | |
8264 | ||
3070bab4 JW |
8265 | add_hidden_procptr_result (sym); |
8266 | ||
6de9cd9a DN |
8267 | return MATCH_YES; |
8268 | ||
8269 | cleanup: | |
8270 | gfc_free_array_spec (as); | |
8271 | return m; | |
8272 | } | |
8273 | ||
8274 | ||
8275 | /* Generic attribute declaration subroutine. Used for attributes that | |
8276 | just have a list of names. */ | |
8277 | ||
8278 | static match | |
8279 | attr_decl (void) | |
8280 | { | |
8281 | match m; | |
8282 | ||
8283 | /* Gobble the optional double colon, by simply ignoring the result | |
8284 | of gfc_match(). */ | |
8285 | gfc_match (" ::"); | |
8286 | ||
8287 | for (;;) | |
8288 | { | |
8289 | m = attr_decl1 (); | |
8290 | if (m != MATCH_YES) | |
8291 | break; | |
8292 | ||
8293 | if (gfc_match_eos () == MATCH_YES) | |
8294 | { | |
8295 | m = MATCH_YES; | |
8296 | break; | |
8297 | } | |
8298 | ||
8299 | if (gfc_match_char (',') != MATCH_YES) | |
8300 | { | |
8301 | gfc_error ("Unexpected character in variable list at %C"); | |
8302 | m = MATCH_ERROR; | |
8303 | break; | |
8304 | } | |
8305 | } | |
8306 | ||
8307 | return m; | |
8308 | } | |
8309 | ||
8310 | ||
83d890b9 AL |
8311 | /* This routine matches Cray Pointer declarations of the form: |
8312 | pointer ( <pointer>, <pointee> ) | |
8313 | or | |
d51347f9 TB |
8314 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8315 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
8316 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8317 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 8318 | the pointee. For the statement |
83d890b9 AL |
8319 | pointer (ipt, ar(10)) |
8320 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 8321 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 8322 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
8323 | |
8324 | static match | |
8325 | cray_pointer_decl (void) | |
8326 | { | |
8327 | match m; | |
be59db2d | 8328 | gfc_array_spec *as = NULL; |
83d890b9 AL |
8329 | gfc_symbol *cptr; /* Pointer symbol. */ |
8330 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8331 | locus var_locus; | |
8332 | bool done = false; | |
8333 | ||
8334 | while (!done) | |
8335 | { | |
8336 | if (gfc_match_char ('(') != MATCH_YES) | |
8337 | { | |
a4d9b221 | 8338 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 8339 | return MATCH_ERROR; |
83d890b9 | 8340 | } |
d51347f9 | 8341 | |
83d890b9 AL |
8342 | /* Match pointer. */ |
8343 | var_locus = gfc_current_locus; | |
8344 | gfc_clear_attr (¤t_attr); | |
8345 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8346 | current_ts.type = BT_INTEGER; | |
8347 | current_ts.kind = gfc_index_integer_kind; | |
8348 | ||
d51347f9 | 8349 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
8350 | if (m != MATCH_YES) |
8351 | { | |
8352 | gfc_error ("Expected variable name at %C"); | |
8353 | return m; | |
8354 | } | |
d51347f9 | 8355 | |
524af0d6 | 8356 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
8357 | return MATCH_ERROR; |
8358 | ||
d51347f9 | 8359 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
8360 | |
8361 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8362 | { | |
8363 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 8364 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
8365 | } |
8366 | else if (cptr->ts.type != BT_INTEGER) | |
8367 | { | |
e25a0da3 | 8368 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
8369 | return MATCH_ERROR; |
8370 | } | |
8371 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 8372 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 8373 | " memory addresses require %d bytes", |
636dff67 | 8374 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
8375 | |
8376 | if (gfc_match_char (',') != MATCH_YES) | |
8377 | { | |
8378 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 8379 | return MATCH_ERROR; |
83d890b9 AL |
8380 | } |
8381 | ||
d51347f9 | 8382 | /* Match Pointee. */ |
83d890b9 AL |
8383 | var_locus = gfc_current_locus; |
8384 | gfc_clear_attr (¤t_attr); | |
8385 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8386 | current_ts.type = BT_UNKNOWN; | |
8387 | current_ts.kind = 0; | |
8388 | ||
8389 | m = gfc_match_symbol (&cpte, 0); | |
8390 | if (m != MATCH_YES) | |
8391 | { | |
8392 | gfc_error ("Expected variable name at %C"); | |
8393 | return m; | |
8394 | } | |
d51347f9 | 8395 | |
83d890b9 | 8396 | /* Check for an optional array spec. */ |
be59db2d | 8397 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
8398 | if (m == MATCH_ERROR) |
8399 | { | |
8400 | gfc_free_array_spec (as); | |
8401 | return m; | |
8402 | } | |
8403 | else if (m == MATCH_NO) | |
8404 | { | |
8405 | gfc_free_array_spec (as); | |
8406 | as = NULL; | |
f5acf0f2 | 8407 | } |
83d890b9 | 8408 | |
524af0d6 | 8409 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
8410 | return MATCH_ERROR; |
8411 | ||
8412 | gfc_set_sym_referenced (cpte); | |
8413 | ||
8414 | if (cpte->as == NULL) | |
8415 | { | |
524af0d6 | 8416 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
8417 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8418 | } | |
8419 | else if (as != NULL) | |
8420 | { | |
e25a0da3 | 8421 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
8422 | gfc_free_array_spec (as); |
8423 | return MATCH_ERROR; | |
8424 | } | |
f5acf0f2 | 8425 | |
83d890b9 | 8426 | as = NULL; |
f5acf0f2 | 8427 | |
83d890b9 AL |
8428 | if (cpte->as != NULL) |
8429 | { | |
8430 | /* Fix array spec. */ | |
8431 | m = gfc_mod_pointee_as (cpte->as); | |
8432 | if (m == MATCH_ERROR) | |
8433 | return m; | |
f5acf0f2 PT |
8434 | } |
8435 | ||
83d890b9 | 8436 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 8437 | cpte->cp_pointer = cptr; |
83d890b9 AL |
8438 | |
8439 | if (gfc_match_char (')') != MATCH_YES) | |
8440 | { | |
8441 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 8442 | return MATCH_ERROR; |
83d890b9 AL |
8443 | } |
8444 | m = gfc_match_char (','); | |
8445 | if (m != MATCH_YES) | |
8446 | done = true; /* Stop searching for more declarations. */ | |
8447 | ||
8448 | } | |
f5acf0f2 | 8449 | |
83d890b9 AL |
8450 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8451 | || gfc_match_eos () != MATCH_YES) | |
8452 | { | |
a4d9b221 | 8453 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
8454 | return MATCH_ERROR; |
8455 | } | |
8456 | return MATCH_YES; | |
8457 | } | |
8458 | ||
8459 | ||
6de9cd9a DN |
8460 | match |
8461 | gfc_match_external (void) | |
8462 | { | |
8463 | ||
8464 | gfc_clear_attr (¤t_attr); | |
1902704e | 8465 | current_attr.external = 1; |
6de9cd9a DN |
8466 | |
8467 | return attr_decl (); | |
8468 | } | |
8469 | ||
8470 | ||
6de9cd9a DN |
8471 | match |
8472 | gfc_match_intent (void) | |
8473 | { | |
8474 | sym_intent intent; | |
8475 | ||
9abe5e56 DK |
8476 | /* This is not allowed within a BLOCK construct! */ |
8477 | if (gfc_current_state () == COMP_BLOCK) | |
8478 | { | |
8479 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8480 | return MATCH_ERROR; | |
8481 | } | |
8482 | ||
6de9cd9a DN |
8483 | intent = match_intent_spec (); |
8484 | if (intent == INTENT_UNKNOWN) | |
8485 | return MATCH_ERROR; | |
8486 | ||
8487 | gfc_clear_attr (¤t_attr); | |
1902704e | 8488 | current_attr.intent = intent; |
6de9cd9a DN |
8489 | |
8490 | return attr_decl (); | |
8491 | } | |
8492 | ||
8493 | ||
8494 | match | |
8495 | gfc_match_intrinsic (void) | |
8496 | { | |
8497 | ||
8498 | gfc_clear_attr (¤t_attr); | |
1902704e | 8499 | current_attr.intrinsic = 1; |
6de9cd9a DN |
8500 | |
8501 | return attr_decl (); | |
8502 | } | |
8503 | ||
8504 | ||
8505 | match | |
8506 | gfc_match_optional (void) | |
8507 | { | |
9abe5e56 DK |
8508 | /* This is not allowed within a BLOCK construct! */ |
8509 | if (gfc_current_state () == COMP_BLOCK) | |
8510 | { | |
8511 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8512 | return MATCH_ERROR; | |
8513 | } | |
6de9cd9a DN |
8514 | |
8515 | gfc_clear_attr (¤t_attr); | |
1902704e | 8516 | current_attr.optional = 1; |
6de9cd9a DN |
8517 | |
8518 | return attr_decl (); | |
8519 | } | |
8520 | ||
8521 | ||
8522 | match | |
8523 | gfc_match_pointer (void) | |
8524 | { | |
83d890b9 | 8525 | gfc_gobble_whitespace (); |
8fc541d3 | 8526 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 8527 | { |
c61819ff | 8528 | if (!flag_cray_pointer) |
83d890b9 | 8529 | { |
636dff67 SK |
8530 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8531 | "flag"); | |
83d890b9 AL |
8532 | return MATCH_ERROR; |
8533 | } | |
8534 | return cray_pointer_decl (); | |
8535 | } | |
8536 | else | |
8537 | { | |
8538 | gfc_clear_attr (¤t_attr); | |
1902704e | 8539 | current_attr.pointer = 1; |
f5acf0f2 | 8540 | |
83d890b9 AL |
8541 | return attr_decl (); |
8542 | } | |
6de9cd9a DN |
8543 | } |
8544 | ||
8545 | ||
8546 | match | |
8547 | gfc_match_allocatable (void) | |
8548 | { | |
6de9cd9a | 8549 | gfc_clear_attr (¤t_attr); |
1902704e | 8550 | current_attr.allocatable = 1; |
6de9cd9a DN |
8551 | |
8552 | return attr_decl (); | |
8553 | } | |
8554 | ||
8555 | ||
be59db2d TB |
8556 | match |
8557 | gfc_match_codimension (void) | |
8558 | { | |
8559 | gfc_clear_attr (¤t_attr); | |
8560 | current_attr.codimension = 1; | |
8561 | ||
8562 | return attr_decl (); | |
8563 | } | |
8564 | ||
8565 | ||
fe4e525c TB |
8566 | match |
8567 | gfc_match_contiguous (void) | |
8568 | { | |
524af0d6 | 8569 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
8570 | return MATCH_ERROR; |
8571 | ||
8572 | gfc_clear_attr (¤t_attr); | |
8573 | current_attr.contiguous = 1; | |
8574 | ||
8575 | return attr_decl (); | |
8576 | } | |
8577 | ||
8578 | ||
6de9cd9a DN |
8579 | match |
8580 | gfc_match_dimension (void) | |
8581 | { | |
6de9cd9a | 8582 | gfc_clear_attr (¤t_attr); |
1902704e | 8583 | current_attr.dimension = 1; |
6de9cd9a DN |
8584 | |
8585 | return attr_decl (); | |
8586 | } | |
8587 | ||
8588 | ||
8589 | match | |
8590 | gfc_match_target (void) | |
8591 | { | |
6de9cd9a | 8592 | gfc_clear_attr (¤t_attr); |
1902704e | 8593 | current_attr.target = 1; |
6de9cd9a DN |
8594 | |
8595 | return attr_decl (); | |
8596 | } | |
8597 | ||
8598 | ||
8599 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8600 | statement. */ | |
8601 | ||
8602 | static match | |
8603 | access_attr_decl (gfc_statement st) | |
8604 | { | |
8605 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8606 | interface_type type; | |
8607 | gfc_user_op *uop; | |
c3f34952 | 8608 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 8609 | gfc_intrinsic_op op; |
6de9cd9a DN |
8610 | match m; |
8611 | ||
8612 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8613 | goto done; | |
8614 | ||
8615 | for (;;) | |
8616 | { | |
a1ee985f | 8617 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
8618 | if (m == MATCH_NO) |
8619 | goto syntax; | |
8620 | if (m == MATCH_ERROR) | |
8621 | return MATCH_ERROR; | |
8622 | ||
8623 | switch (type) | |
8624 | { | |
8625 | case INTERFACE_NAMELESS: | |
9e1d712c | 8626 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
8627 | goto syntax; |
8628 | ||
8629 | case INTERFACE_GENERIC: | |
e73d3ca6 | 8630 | case INTERFACE_DTIO: |
dc42a736 | 8631 | |
6de9cd9a DN |
8632 | if (gfc_get_symbol (name, NULL, &sym)) |
8633 | goto done; | |
8634 | ||
41036686 PT |
8635 | if (type == INTERFACE_DTIO |
8636 | && gfc_current_ns->proc_name | |
8637 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8638 | && sym->attr.flavor == FL_UNKNOWN) | |
8639 | sym->attr.flavor = FL_PROCEDURE; | |
8640 | ||
70112e2a PT |
8641 | if (!gfc_add_access (&sym->attr, |
8642 | (st == ST_PUBLIC) | |
8643 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8644 | sym->name, NULL)) |
6de9cd9a DN |
8645 | return MATCH_ERROR; |
8646 | ||
c3f34952 | 8647 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
8648 | && !gfc_add_access (&dt_sym->attr, |
8649 | (st == ST_PUBLIC) | |
8650 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 8651 | sym->name, NULL)) |
c3f34952 TB |
8652 | return MATCH_ERROR; |
8653 | ||
6de9cd9a DN |
8654 | break; |
8655 | ||
8656 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 8657 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 8658 | { |
fb03a37e TK |
8659 | gfc_intrinsic_op other_op; |
8660 | ||
a1ee985f | 8661 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 8662 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
8663 | |
8664 | /* Handle the case if there is another op with the same | |
8665 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8666 | other_op = gfc_equivalent_op (op); | |
8667 | ||
8668 | if (other_op != INTRINSIC_NONE) | |
8669 | gfc_current_ns->operator_access[other_op] = | |
8670 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8671 | ||
6de9cd9a DN |
8672 | } |
8673 | else | |
8674 | { | |
8675 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 8676 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
8677 | goto done; |
8678 | } | |
8679 | ||
8680 | break; | |
8681 | ||
8682 | case INTERFACE_USER_OP: | |
8683 | uop = gfc_get_uop (name); | |
8684 | ||
8685 | if (uop->access == ACCESS_UNKNOWN) | |
8686 | { | |
636dff67 SK |
8687 | uop->access = (st == ST_PUBLIC) |
8688 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
8689 | } |
8690 | else | |
8691 | { | |
636dff67 SK |
8692 | gfc_error ("Access specification of the .%s. operator at %C " |
8693 | "has already been specified", sym->name); | |
6de9cd9a DN |
8694 | goto done; |
8695 | } | |
8696 | ||
8697 | break; | |
8698 | } | |
8699 | ||
8700 | if (gfc_match_char (',') == MATCH_NO) | |
8701 | break; | |
8702 | } | |
8703 | ||
8704 | if (gfc_match_eos () != MATCH_YES) | |
8705 | goto syntax; | |
8706 | return MATCH_YES; | |
8707 | ||
8708 | syntax: | |
8709 | gfc_syntax_error (st); | |
8710 | ||
8711 | done: | |
8712 | return MATCH_ERROR; | |
8713 | } | |
8714 | ||
8715 | ||
ee7e677f TB |
8716 | match |
8717 | gfc_match_protected (void) | |
8718 | { | |
8719 | gfc_symbol *sym; | |
8720 | match m; | |
8721 | ||
73641c88 SK |
8722 | if (!gfc_current_ns->proc_name |
8723 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
8724 | { |
8725 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8726 | "part of a module"); | |
8727 | return MATCH_ERROR; | |
8728 | ||
8729 | } | |
8730 | ||
524af0d6 | 8731 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
8732 | return MATCH_ERROR; |
8733 | ||
8734 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8735 | { | |
8736 | return MATCH_ERROR; | |
8737 | } | |
8738 | ||
8739 | if (gfc_match_eos () == MATCH_YES) | |
8740 | goto syntax; | |
8741 | ||
8742 | for(;;) | |
8743 | { | |
8744 | m = gfc_match_symbol (&sym, 0); | |
8745 | switch (m) | |
8746 | { | |
8747 | case MATCH_YES: | |
524af0d6 | 8748 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
8749 | return MATCH_ERROR; |
8750 | goto next_item; | |
8751 | ||
8752 | case MATCH_NO: | |
8753 | break; | |
8754 | ||
8755 | case MATCH_ERROR: | |
8756 | return MATCH_ERROR; | |
8757 | } | |
8758 | ||
8759 | next_item: | |
8760 | if (gfc_match_eos () == MATCH_YES) | |
8761 | break; | |
8762 | if (gfc_match_char (',') != MATCH_YES) | |
8763 | goto syntax; | |
8764 | } | |
8765 | ||
8766 | return MATCH_YES; | |
8767 | ||
8768 | syntax: | |
8769 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8770 | return MATCH_ERROR; | |
8771 | } | |
8772 | ||
8773 | ||
86bf520d | 8774 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 8775 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
8776 | type declaration or a module. */ |
8777 | ||
8778 | match | |
636dff67 | 8779 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
8780 | { |
8781 | ||
8782 | if (gfc_match ("private") != MATCH_YES) | |
8783 | return MATCH_NO; | |
8784 | ||
d51347f9 | 8785 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
8786 | && !(gfc_current_state () == COMP_DERIVED |
8787 | && gfc_state_stack->previous | |
8788 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8789 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8790 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8791 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
8792 | { |
8793 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8794 | "specification part of a module"); | |
8795 | return MATCH_ERROR; | |
8796 | } | |
8797 | ||
6de9cd9a DN |
8798 | if (gfc_current_state () == COMP_DERIVED) |
8799 | { | |
8800 | if (gfc_match_eos () == MATCH_YES) | |
8801 | { | |
8802 | *st = ST_PRIVATE; | |
8803 | return MATCH_YES; | |
8804 | } | |
8805 | ||
8806 | gfc_syntax_error (ST_PRIVATE); | |
8807 | return MATCH_ERROR; | |
8808 | } | |
8809 | ||
8810 | if (gfc_match_eos () == MATCH_YES) | |
8811 | { | |
8812 | *st = ST_PRIVATE; | |
8813 | return MATCH_YES; | |
8814 | } | |
8815 | ||
8816 | *st = ST_ATTR_DECL; | |
8817 | return access_attr_decl (ST_PRIVATE); | |
8818 | } | |
8819 | ||
8820 | ||
8821 | match | |
636dff67 | 8822 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
8823 | { |
8824 | ||
8825 | if (gfc_match ("public") != MATCH_YES) | |
8826 | return MATCH_NO; | |
8827 | ||
d51347f9 TB |
8828 | if (gfc_current_state () != COMP_MODULE) |
8829 | { | |
8830 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8831 | "specification part of a module"); | |
8832 | return MATCH_ERROR; | |
8833 | } | |
8834 | ||
6de9cd9a DN |
8835 | if (gfc_match_eos () == MATCH_YES) |
8836 | { | |
8837 | *st = ST_PUBLIC; | |
8838 | return MATCH_YES; | |
8839 | } | |
8840 | ||
8841 | *st = ST_ATTR_DECL; | |
8842 | return access_attr_decl (ST_PUBLIC); | |
8843 | } | |
8844 | ||
8845 | ||
8846 | /* Workhorse for gfc_match_parameter. */ | |
8847 | ||
8848 | static match | |
8849 | do_parm (void) | |
8850 | { | |
8851 | gfc_symbol *sym; | |
8852 | gfc_expr *init; | |
8853 | match m; | |
524af0d6 | 8854 | bool t; |
6de9cd9a DN |
8855 | |
8856 | m = gfc_match_symbol (&sym, 0); | |
8857 | if (m == MATCH_NO) | |
8858 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8859 | ||
8860 | if (m != MATCH_YES) | |
8861 | return m; | |
8862 | ||
8863 | if (gfc_match_char ('=') == MATCH_NO) | |
8864 | { | |
8865 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8866 | return MATCH_ERROR; | |
8867 | } | |
8868 | ||
8869 | m = gfc_match_init_expr (&init); | |
8870 | if (m == MATCH_NO) | |
8871 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8872 | if (m != MATCH_YES) | |
8873 | return m; | |
8874 | ||
8875 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 8876 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
8877 | { |
8878 | m = MATCH_ERROR; | |
8879 | goto cleanup; | |
8880 | } | |
8881 | ||
524af0d6 JB |
8882 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8883 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
8884 | { |
8885 | m = MATCH_ERROR; | |
8886 | goto cleanup; | |
8887 | } | |
8888 | ||
1283ab12 TB |
8889 | if (sym->value) |
8890 | { | |
8891 | gfc_error ("Initializing already initialized variable at %C"); | |
8892 | m = MATCH_ERROR; | |
8893 | goto cleanup; | |
8894 | } | |
8895 | ||
7919373d | 8896 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 8897 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
8898 | |
8899 | cleanup: | |
8900 | gfc_free_expr (init); | |
8901 | return m; | |
8902 | } | |
8903 | ||
8904 | ||
8905 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8906 | ||
8907 | match | |
8908 | gfc_match_parameter (void) | |
8909 | { | |
35ea947f | 8910 | const char *term = " )%t"; |
6de9cd9a DN |
8911 | match m; |
8912 | ||
8913 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
8914 | { |
8915 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8916 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8917 | return MATCH_NO; | |
8918 | term = " %t"; | |
8919 | } | |
6de9cd9a DN |
8920 | |
8921 | for (;;) | |
8922 | { | |
8923 | m = do_parm (); | |
8924 | if (m != MATCH_YES) | |
8925 | break; | |
8926 | ||
35ea947f | 8927 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
8928 | break; |
8929 | ||
8930 | if (gfc_match_char (',') != MATCH_YES) | |
8931 | { | |
8932 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8933 | m = MATCH_ERROR; | |
8934 | break; | |
8935 | } | |
8936 | } | |
8937 | ||
8938 | return m; | |
8939 | } | |
8940 | ||
8941 | ||
34d567d1 FR |
8942 | match |
8943 | gfc_match_automatic (void) | |
8944 | { | |
8945 | gfc_symbol *sym; | |
8946 | match m; | |
8947 | bool seen_symbol = false; | |
8948 | ||
8949 | if (!flag_dec_static) | |
8950 | { | |
cf004230 FR |
8951 | gfc_error ("%s at %C is a DEC extension, enable with " |
8952 | "%<-fdec-static%>", | |
8953 | "AUTOMATIC" | |
8954 | ); | |
34d567d1 FR |
8955 | return MATCH_ERROR; |
8956 | } | |
8957 | ||
8958 | gfc_match (" ::"); | |
8959 | ||
8960 | for (;;) | |
8961 | { | |
8962 | m = gfc_match_symbol (&sym, 0); | |
8963 | switch (m) | |
8964 | { | |
8965 | case MATCH_NO: | |
8966 | break; | |
8967 | ||
8968 | case MATCH_ERROR: | |
8969 | return MATCH_ERROR; | |
8970 | ||
8971 | case MATCH_YES: | |
8972 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
8973 | return MATCH_ERROR; | |
8974 | seen_symbol = true; | |
8975 | break; | |
8976 | } | |
8977 | ||
8978 | if (gfc_match_eos () == MATCH_YES) | |
8979 | break; | |
8980 | if (gfc_match_char (',') != MATCH_YES) | |
8981 | goto syntax; | |
8982 | } | |
8983 | ||
8984 | if (!seen_symbol) | |
8985 | { | |
8986 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
8987 | return MATCH_ERROR; | |
8988 | } | |
8989 | ||
8990 | return MATCH_YES; | |
8991 | ||
8992 | syntax: | |
8993 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
8994 | return MATCH_ERROR; | |
8995 | } | |
8996 | ||
8997 | ||
8998 | match | |
8999 | gfc_match_static (void) | |
9000 | { | |
9001 | gfc_symbol *sym; | |
9002 | match m; | |
9003 | bool seen_symbol = false; | |
9004 | ||
9005 | if (!flag_dec_static) | |
9006 | { | |
cf004230 FR |
9007 | gfc_error ("%s at %C is a DEC extension, enable with " |
9008 | "%<-fdec-static%>", | |
9009 | "STATIC"); | |
34d567d1 FR |
9010 | return MATCH_ERROR; |
9011 | } | |
9012 | ||
9013 | gfc_match (" ::"); | |
9014 | ||
9015 | for (;;) | |
9016 | { | |
9017 | m = gfc_match_symbol (&sym, 0); | |
9018 | switch (m) | |
9019 | { | |
9020 | case MATCH_NO: | |
9021 | break; | |
9022 | ||
9023 | case MATCH_ERROR: | |
9024 | return MATCH_ERROR; | |
9025 | ||
9026 | case MATCH_YES: | |
9027 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9028 | &gfc_current_locus)) | |
9029 | return MATCH_ERROR; | |
9030 | seen_symbol = true; | |
9031 | break; | |
9032 | } | |
9033 | ||
9034 | if (gfc_match_eos () == MATCH_YES) | |
9035 | break; | |
9036 | if (gfc_match_char (',') != MATCH_YES) | |
9037 | goto syntax; | |
9038 | } | |
9039 | ||
9040 | if (!seen_symbol) | |
9041 | { | |
9042 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9043 | return MATCH_ERROR; | |
9044 | } | |
9045 | ||
9046 | return MATCH_YES; | |
9047 | ||
9048 | syntax: | |
9049 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9050 | return MATCH_ERROR; | |
9051 | } | |
9052 | ||
9053 | ||
6de9cd9a DN |
9054 | /* Save statements have a special syntax. */ |
9055 | ||
9056 | match | |
9057 | gfc_match_save (void) | |
9058 | { | |
9056bd70 TS |
9059 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9060 | gfc_common_head *c; | |
6de9cd9a DN |
9061 | gfc_symbol *sym; |
9062 | match m; | |
9063 | ||
9064 | if (gfc_match_eos () == MATCH_YES) | |
9065 | { | |
9066 | if (gfc_current_ns->seen_save) | |
9067 | { | |
524af0d6 JB |
9068 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9069 | "follows previous SAVE statement")) | |
09e87839 | 9070 | return MATCH_ERROR; |
6de9cd9a DN |
9071 | } |
9072 | ||
9073 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9074 | return MATCH_YES; | |
9075 | } | |
9076 | ||
9077 | if (gfc_current_ns->save_all) | |
9078 | { | |
524af0d6 JB |
9079 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9080 | "blanket SAVE statement")) | |
09e87839 | 9081 | return MATCH_ERROR; |
6de9cd9a DN |
9082 | } |
9083 | ||
9084 | gfc_match (" ::"); | |
9085 | ||
9086 | for (;;) | |
9087 | { | |
9088 | m = gfc_match_symbol (&sym, 0); | |
9089 | switch (m) | |
9090 | { | |
9091 | case MATCH_YES: | |
70112e2a | 9092 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 9093 | &gfc_current_locus)) |
6de9cd9a DN |
9094 | return MATCH_ERROR; |
9095 | goto next_item; | |
9096 | ||
9097 | case MATCH_NO: | |
9098 | break; | |
9099 | ||
9100 | case MATCH_ERROR: | |
9101 | return MATCH_ERROR; | |
9102 | } | |
9103 | ||
9056bd70 | 9104 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
9105 | if (m == MATCH_ERROR) |
9106 | return MATCH_ERROR; | |
9107 | if (m == MATCH_NO) | |
9108 | goto syntax; | |
9109 | ||
53814b8f | 9110 | c = gfc_get_common (n, 0); |
9056bd70 TS |
9111 | c->saved = 1; |
9112 | ||
6de9cd9a DN |
9113 | gfc_current_ns->seen_save = 1; |
9114 | ||
9115 | next_item: | |
9116 | if (gfc_match_eos () == MATCH_YES) | |
9117 | break; | |
9118 | if (gfc_match_char (',') != MATCH_YES) | |
9119 | goto syntax; | |
9120 | } | |
9121 | ||
9122 | return MATCH_YES; | |
9123 | ||
9124 | syntax: | |
9125 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9126 | return MATCH_ERROR; | |
9127 | } | |
9128 | ||
9129 | ||
06469efd PT |
9130 | match |
9131 | gfc_match_value (void) | |
9132 | { | |
9133 | gfc_symbol *sym; | |
9134 | match m; | |
9135 | ||
9abe5e56 DK |
9136 | /* This is not allowed within a BLOCK construct! */ |
9137 | if (gfc_current_state () == COMP_BLOCK) | |
9138 | { | |
9139 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9140 | return MATCH_ERROR; | |
9141 | } | |
9142 | ||
524af0d6 | 9143 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
9144 | return MATCH_ERROR; |
9145 | ||
9146 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9147 | { | |
9148 | return MATCH_ERROR; | |
9149 | } | |
9150 | ||
9151 | if (gfc_match_eos () == MATCH_YES) | |
9152 | goto syntax; | |
9153 | ||
9154 | for(;;) | |
9155 | { | |
9156 | m = gfc_match_symbol (&sym, 0); | |
9157 | switch (m) | |
9158 | { | |
9159 | case MATCH_YES: | |
524af0d6 | 9160 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
9161 | return MATCH_ERROR; |
9162 | goto next_item; | |
9163 | ||
9164 | case MATCH_NO: | |
9165 | break; | |
9166 | ||
9167 | case MATCH_ERROR: | |
9168 | return MATCH_ERROR; | |
9169 | } | |
9170 | ||
9171 | next_item: | |
9172 | if (gfc_match_eos () == MATCH_YES) | |
9173 | break; | |
9174 | if (gfc_match_char (',') != MATCH_YES) | |
9175 | goto syntax; | |
9176 | } | |
9177 | ||
9178 | return MATCH_YES; | |
9179 | ||
9180 | syntax: | |
9181 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9182 | return MATCH_ERROR; | |
9183 | } | |
9184 | ||
66e4ab31 | 9185 | |
775e6c3a TB |
9186 | match |
9187 | gfc_match_volatile (void) | |
9188 | { | |
9189 | gfc_symbol *sym; | |
ba77f7ba | 9190 | char *name; |
775e6c3a TB |
9191 | match m; |
9192 | ||
524af0d6 | 9193 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
9194 | return MATCH_ERROR; |
9195 | ||
9196 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9197 | { | |
9198 | return MATCH_ERROR; | |
9199 | } | |
9200 | ||
9201 | if (gfc_match_eos () == MATCH_YES) | |
9202 | goto syntax; | |
9203 | ||
9204 | for(;;) | |
9205 | { | |
f5acf0f2 | 9206 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 9207 | symbols locally. Except for coarrays. */ |
9bce3c1c | 9208 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
9209 | switch (m) |
9210 | { | |
9211 | case MATCH_YES: | |
ba77f7ba SK |
9212 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9213 | strcpy (name, sym->name); | |
9214 | if (!check_function_name (name)) | |
9215 | return MATCH_ERROR; | |
be59db2d TB |
9216 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9217 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9218 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9219 | { | |
c4100eae | 9220 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
9221 | "%C, which is use-/host-associated", sym->name); |
9222 | return MATCH_ERROR; | |
9223 | } | |
524af0d6 | 9224 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
9225 | return MATCH_ERROR; |
9226 | goto next_item; | |
9227 | ||
9228 | case MATCH_NO: | |
9229 | break; | |
9230 | ||
9231 | case MATCH_ERROR: | |
9232 | return MATCH_ERROR; | |
9233 | } | |
9234 | ||
9235 | next_item: | |
9236 | if (gfc_match_eos () == MATCH_YES) | |
9237 | break; | |
9238 | if (gfc_match_char (',') != MATCH_YES) | |
9239 | goto syntax; | |
9240 | } | |
9241 | ||
9242 | return MATCH_YES; | |
9243 | ||
9244 | syntax: | |
9245 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9246 | return MATCH_ERROR; | |
9247 | } | |
9248 | ||
9249 | ||
1eee5628 TB |
9250 | match |
9251 | gfc_match_asynchronous (void) | |
9252 | { | |
9253 | gfc_symbol *sym; | |
ba77f7ba | 9254 | char *name; |
1eee5628 TB |
9255 | match m; |
9256 | ||
524af0d6 | 9257 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
9258 | return MATCH_ERROR; |
9259 | ||
9260 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9261 | { | |
9262 | return MATCH_ERROR; | |
9263 | } | |
9264 | ||
9265 | if (gfc_match_eos () == MATCH_YES) | |
9266 | goto syntax; | |
9267 | ||
9268 | for(;;) | |
9269 | { | |
f5acf0f2 | 9270 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
9271 | symbols locally. */ |
9272 | m = gfc_match_symbol (&sym, 1); | |
9273 | switch (m) | |
9274 | { | |
9275 | case MATCH_YES: | |
ba77f7ba SK |
9276 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9277 | strcpy (name, sym->name); | |
9278 | if (!check_function_name (name)) | |
9279 | return MATCH_ERROR; | |
524af0d6 | 9280 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
9281 | return MATCH_ERROR; |
9282 | goto next_item; | |
9283 | ||
9284 | case MATCH_NO: | |
9285 | break; | |
9286 | ||
9287 | case MATCH_ERROR: | |
9288 | return MATCH_ERROR; | |
9289 | } | |
9290 | ||
9291 | next_item: | |
9292 | if (gfc_match_eos () == MATCH_YES) | |
9293 | break; | |
9294 | if (gfc_match_char (',') != MATCH_YES) | |
9295 | goto syntax; | |
9296 | } | |
9297 | ||
9298 | return MATCH_YES; | |
9299 | ||
9300 | syntax: | |
9301 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9302 | return MATCH_ERROR; | |
9303 | } | |
9304 | ||
9305 | ||
4668d6f9 PT |
9306 | /* Match a module procedure statement in a submodule. */ |
9307 | ||
9308 | match | |
9309 | gfc_match_submod_proc (void) | |
9310 | { | |
9311 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9312 | gfc_symbol *sym, *fsym; | |
9313 | match m; | |
9314 | gfc_formal_arglist *formal, *head, *tail; | |
9315 | ||
9316 | if (gfc_current_state () != COMP_CONTAINS | |
9317 | || !(gfc_state_stack->previous | |
70112e2a PT |
9318 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9319 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
9320 | return MATCH_NO; |
9321 | ||
9322 | m = gfc_match (" module% procedure% %n", name); | |
9323 | if (m != MATCH_YES) | |
9324 | return m; | |
9325 | ||
9326 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9327 | "at %C")) | |
9328 | return MATCH_ERROR; | |
9329 | ||
9330 | if (get_proc_name (name, &sym, false)) | |
9331 | return MATCH_ERROR; | |
9332 | ||
9333 | /* Make sure that the result field is appropriately filled, even though | |
9334 | the result symbol will be replaced later on. */ | |
c064374d | 9335 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 9336 | { |
c064374d PT |
9337 | if (sym->tlink->result |
9338 | && sym->tlink->result != sym->tlink) | |
9339 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
9340 | else |
9341 | sym->result = sym; | |
9342 | } | |
9343 | ||
9344 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9345 | the symbol existed before. */ | |
9346 | sym->declared_at = gfc_current_locus; | |
9347 | ||
9348 | if (!sym->attr.module_procedure) | |
9349 | return MATCH_ERROR; | |
9350 | ||
9351 | /* Signal match_end to expect "end procedure". */ | |
9352 | sym->abr_modproc_decl = 1; | |
9353 | ||
9354 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9355 | sym->attr.if_source = IFSRC_DECL; | |
9356 | ||
9357 | gfc_new_block = sym; | |
9358 | ||
9359 | /* Make a new formal arglist with the symbols in the procedure | |
9360 | namespace. */ | |
9361 | head = tail = NULL; | |
9362 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9363 | { | |
9364 | if (formal == sym->formal) | |
9365 | head = tail = gfc_get_formal_arglist (); | |
9366 | else | |
9367 | { | |
9368 | tail->next = gfc_get_formal_arglist (); | |
9369 | tail = tail->next; | |
9370 | } | |
9371 | ||
9372 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9373 | goto cleanup; | |
9374 | ||
9375 | tail->sym = fsym; | |
9376 | gfc_set_sym_referenced (fsym); | |
9377 | } | |
9378 | ||
9379 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9380 | interface declaration is cleared. This allows us to add the | |
9381 | explicit interface as is done for other type of procedure. */ | |
9382 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9383 | &gfc_current_locus)) | |
9384 | return MATCH_ERROR; | |
9385 | ||
9386 | if (gfc_match_eos () != MATCH_YES) | |
9387 | { | |
9388 | gfc_syntax_error (ST_MODULE_PROC); | |
9389 | return MATCH_ERROR; | |
9390 | } | |
9391 | ||
9392 | return MATCH_YES; | |
9393 | ||
9394 | cleanup: | |
9395 | gfc_free_formal_arglist (head); | |
9396 | return MATCH_ERROR; | |
9397 | } | |
9398 | ||
9399 | ||
6de9cd9a DN |
9400 | /* Match a module procedure statement. Note that we have to modify |
9401 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 9402 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
9403 | |
9404 | match | |
9405 | gfc_match_modproc (void) | |
9406 | { | |
9407 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9408 | gfc_symbol *sym; | |
9409 | match m; | |
162b5a21 | 9410 | locus old_locus; |
060fca4a | 9411 | gfc_namespace *module_ns; |
2b77e908 | 9412 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
9413 | |
9414 | if (gfc_state_stack->state != COMP_INTERFACE | |
9415 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
9416 | || current_interface.type == INTERFACE_NAMELESS |
9417 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 9418 | { |
636dff67 SK |
9419 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9420 | "interface"); | |
6de9cd9a DN |
9421 | return MATCH_ERROR; |
9422 | } | |
9423 | ||
060fca4a PT |
9424 | module_ns = gfc_current_ns->parent; |
9425 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
9426 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9427 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9428 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9429 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
9430 | break; |
9431 | ||
9432 | if (module_ns == NULL) | |
9433 | return MATCH_ERROR; | |
9434 | ||
2b77e908 FXC |
9435 | /* Store the current state of the interface. We will need it if we |
9436 | end up with a syntax error and need to recover. */ | |
9437 | old_interface_head = gfc_current_interface_head (); | |
9438 | ||
162b5a21 SK |
9439 | /* Check if the F2008 optional double colon appears. */ |
9440 | gfc_gobble_whitespace (); | |
9441 | old_locus = gfc_current_locus; | |
9442 | if (gfc_match ("::") == MATCH_YES) | |
9443 | { | |
524af0d6 JB |
9444 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9445 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
9446 | return MATCH_ERROR; |
9447 | } | |
9448 | else | |
9449 | gfc_current_locus = old_locus; | |
f5acf0f2 | 9450 | |
6de9cd9a DN |
9451 | for (;;) |
9452 | { | |
2b77e908 | 9453 | bool last = false; |
162b5a21 | 9454 | old_locus = gfc_current_locus; |
2b77e908 | 9455 | |
6de9cd9a DN |
9456 | m = gfc_match_name (name); |
9457 | if (m == MATCH_NO) | |
9458 | goto syntax; | |
9459 | if (m != MATCH_YES) | |
9460 | return MATCH_ERROR; | |
9461 | ||
2b77e908 FXC |
9462 | /* Check for syntax error before starting to add symbols to the |
9463 | current namespace. */ | |
9464 | if (gfc_match_eos () == MATCH_YES) | |
9465 | last = true; | |
162b5a21 | 9466 | |
2b77e908 FXC |
9467 | if (!last && gfc_match_char (',') != MATCH_YES) |
9468 | goto syntax; | |
9469 | ||
9470 | /* Now we're sure the syntax is valid, we process this item | |
9471 | further. */ | |
060fca4a | 9472 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
9473 | return MATCH_ERROR; |
9474 | ||
43dfd40c SK |
9475 | if (sym->attr.intrinsic) |
9476 | { | |
9477 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9478 | "PROCEDURE", &old_locus); | |
9479 | return MATCH_ERROR; | |
9480 | } | |
9481 | ||
6de9cd9a | 9482 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 9483 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
9484 | return MATCH_ERROR; |
9485 | ||
524af0d6 | 9486 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
9487 | return MATCH_ERROR; |
9488 | ||
71f77fd7 | 9489 | sym->attr.mod_proc = 1; |
43dfd40c | 9490 | sym->declared_at = old_locus; |
71f77fd7 | 9491 | |
2b77e908 | 9492 | if (last) |
6de9cd9a | 9493 | break; |
6de9cd9a DN |
9494 | } |
9495 | ||
9496 | return MATCH_YES; | |
9497 | ||
9498 | syntax: | |
2b77e908 FXC |
9499 | /* Restore the previous state of the interface. */ |
9500 | interface = gfc_current_interface_head (); | |
9501 | gfc_set_current_interface_head (old_interface_head); | |
9502 | ||
9503 | /* Free the new interfaces. */ | |
9504 | while (interface != old_interface_head) | |
9505 | { | |
9506 | gfc_interface *i = interface->next; | |
cede9502 | 9507 | free (interface); |
2b77e908 FXC |
9508 | interface = i; |
9509 | } | |
9510 | ||
9511 | /* And issue a syntax error. */ | |
6de9cd9a DN |
9512 | gfc_syntax_error (ST_MODULE_PROC); |
9513 | return MATCH_ERROR; | |
9514 | } | |
9515 | ||
9516 | ||
7d1f1e61 | 9517 | /* Check a derived type that is being extended. */ |
42e3d759 | 9518 | |
7d1f1e61 PT |
9519 | static gfc_symbol* |
9520 | check_extended_derived_type (char *name) | |
9521 | { | |
9522 | gfc_symbol *extended; | |
9523 | ||
9524 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9525 | { | |
9526 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9527 | return NULL; | |
9528 | } | |
9529 | ||
42e3d759 JW |
9530 | extended = gfc_find_dt_in_generic (extended); |
9531 | ||
9532 | /* F08:C428. */ | |
7d1f1e61 PT |
9533 | if (!extended) |
9534 | { | |
c4100eae | 9535 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
9536 | return NULL; |
9537 | } | |
9538 | ||
9539 | if (extended->attr.flavor != FL_DERIVED) | |
9540 | { | |
c4100eae | 9541 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
9542 | "derived type", name); |
9543 | return NULL; | |
9544 | } | |
9545 | ||
9546 | if (extended->attr.is_bind_c) | |
9547 | { | |
c4100eae | 9548 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9549 | "is BIND(C)", extended->name); |
9550 | return NULL; | |
9551 | } | |
9552 | ||
9553 | if (extended->attr.sequence) | |
9554 | { | |
c4100eae | 9555 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
9556 | "is a SEQUENCE type", extended->name); |
9557 | return NULL; | |
9558 | } | |
9559 | ||
9560 | return extended; | |
9561 | } | |
9562 | ||
9563 | ||
a8b3b0b6 CR |
9564 | /* Match the optional attribute specifiers for a type declaration. |
9565 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9566 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9567 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9568 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
9569 | |
9570 | match | |
7d1f1e61 | 9571 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 9572 | { |
a8b3b0b6 | 9573 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
9574 | if (gfc_match (" , private") == MATCH_YES) |
9575 | { | |
d51347f9 | 9576 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9577 | { |
d51347f9 TB |
9578 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9579 | "specification part of a module"); | |
6de9cd9a DN |
9580 | return MATCH_ERROR; |
9581 | } | |
9582 | ||
524af0d6 | 9583 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 9584 | return MATCH_ERROR; |
6de9cd9a | 9585 | } |
a8b3b0b6 | 9586 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 9587 | { |
d51347f9 | 9588 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 9589 | { |
d51347f9 TB |
9590 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9591 | "specification part of a module"); | |
6de9cd9a DN |
9592 | return MATCH_ERROR; |
9593 | } | |
9594 | ||
524af0d6 | 9595 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 9596 | return MATCH_ERROR; |
6de9cd9a | 9597 | } |
52f49934 | 9598 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
9599 | { |
9600 | /* If the type is defined to be bind(c) it then needs to make | |
9601 | sure that all fields are interoperable. This will | |
9602 | need to be a semantic check on the finished derived type. | |
9603 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 9604 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
9605 | return MATCH_ERROR; |
9606 | ||
9607 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9608 | } | |
52f49934 DK |
9609 | else if (gfc_match (" , abstract") == MATCH_YES) |
9610 | { | |
524af0d6 | 9611 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
9612 | return MATCH_ERROR; |
9613 | ||
524af0d6 | 9614 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
9615 | return MATCH_ERROR; |
9616 | } | |
524af0d6 | 9617 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 9618 | { |
524af0d6 | 9619 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
9620 | return MATCH_ERROR; |
9621 | } | |
a8b3b0b6 CR |
9622 | else |
9623 | return MATCH_NO; | |
9624 | ||
9625 | /* If we get here, something matched. */ | |
9626 | return MATCH_YES; | |
9627 | } | |
9628 | ||
9629 | ||
f6288c24 FR |
9630 | /* Common function for type declaration blocks similar to derived types, such |
9631 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9632 | does NOT have a generic symbol matching the name given by the user. | |
9633 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9634 | for the creation of an independent symbol. | |
6442a6f4 | 9635 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
9636 | type to be created, and the flavor to add to the resulting symbol. */ |
9637 | ||
9638 | static bool | |
9639 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9640 | gfc_symbol **result) | |
9641 | { | |
9642 | gfc_symbol *sym; | |
9643 | locus where; | |
9644 | ||
9645 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9646 | ||
9647 | if (decl) | |
9648 | where = *decl; | |
9649 | else | |
9650 | where = gfc_current_locus; | |
9651 | ||
9652 | if (gfc_get_symbol (name, NULL, &sym)) | |
9653 | return false; | |
9654 | ||
9655 | if (!sym) | |
9656 | { | |
9657 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9658 | return false; | |
9659 | } | |
9660 | ||
9661 | if (sym->components != NULL || sym->attr.zero_comp) | |
9662 | { | |
2f029c08 | 9663 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
f6288c24 FR |
9664 | sym->name, &sym->declared_at); |
9665 | return false; | |
9666 | } | |
9667 | ||
9668 | sym->declared_at = where; | |
9669 | ||
9670 | if (sym->attr.flavor != fl | |
9671 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9672 | return false; | |
9673 | ||
9674 | if (!sym->hash_value) | |
9675 | /* Set the hash for the compound name for this type. */ | |
9676 | sym->hash_value = gfc_hash_value (sym); | |
9677 | ||
9678 | /* Normally the type is expected to have been completely parsed by the time | |
9679 | a field declaration with this type is seen. For unions, maps, and nested | |
9680 | structure declarations, we need to indicate that it is okay that we | |
9681 | haven't seen any components yet. This will be updated after the structure | |
9682 | is fully parsed. */ | |
9683 | sym->attr.zero_comp = 0; | |
9684 | ||
9685 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9686 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9687 | ||
9688 | if (result) *result = sym; | |
9689 | ||
9690 | return true; | |
9691 | } | |
9692 | ||
9693 | ||
9694 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9695 | behaves identical to STRUCTURE blocks. */ | |
9696 | ||
9697 | match | |
9698 | gfc_match_map (void) | |
9699 | { | |
05b8fcb4 FR |
9700 | /* Counter used to give unique internal names to map structures. */ |
9701 | static unsigned int gfc_map_id = 0; | |
9702 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9703 | gfc_symbol *sym; | |
9704 | locus old_loc; | |
f6288c24 | 9705 | |
05b8fcb4 | 9706 | old_loc = gfc_current_locus; |
f6288c24 | 9707 | |
05b8fcb4 FR |
9708 | if (gfc_match_eos () != MATCH_YES) |
9709 | { | |
9710 | gfc_error ("Junk after MAP statement at %C"); | |
9711 | gfc_current_locus = old_loc; | |
9712 | return MATCH_ERROR; | |
9713 | } | |
f6288c24 | 9714 | |
05b8fcb4 FR |
9715 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9716 | which are invalid Fortran identifiers. */ | |
9717 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 9718 | |
05b8fcb4 FR |
9719 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9720 | return MATCH_ERROR; | |
f6288c24 | 9721 | |
05b8fcb4 | 9722 | gfc_new_block = sym; |
f6288c24 | 9723 | |
05b8fcb4 | 9724 | return MATCH_YES; |
f6288c24 FR |
9725 | } |
9726 | ||
9727 | ||
9728 | /* Match the opening of a UNION block. */ | |
9729 | ||
9730 | match | |
9731 | gfc_match_union (void) | |
9732 | { | |
05b8fcb4 FR |
9733 | /* Counter used to give unique internal names to union types. */ |
9734 | static unsigned int gfc_union_id = 0; | |
9735 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9736 | gfc_symbol *sym; | |
9737 | locus old_loc; | |
f6288c24 | 9738 | |
05b8fcb4 | 9739 | old_loc = gfc_current_locus; |
f6288c24 | 9740 | |
05b8fcb4 FR |
9741 | if (gfc_match_eos () != MATCH_YES) |
9742 | { | |
9743 | gfc_error ("Junk after UNION statement at %C"); | |
9744 | gfc_current_locus = old_loc; | |
9745 | return MATCH_ERROR; | |
9746 | } | |
f6288c24 | 9747 | |
05b8fcb4 FR |
9748 | /* Unions are anonymous so we make up unique names for the symbol table |
9749 | which are invalid Fortran identifiers. */ | |
9750 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 9751 | |
05b8fcb4 FR |
9752 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9753 | return MATCH_ERROR; | |
f6288c24 | 9754 | |
05b8fcb4 | 9755 | gfc_new_block = sym; |
f6288c24 | 9756 | |
05b8fcb4 | 9757 | return MATCH_YES; |
f6288c24 FR |
9758 | } |
9759 | ||
9760 | ||
9761 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9762 | matching the beginning of a derived type declaration with a few | |
9763 | twists. The resulting type symbol has no access control or other | |
9764 | interesting attributes. */ | |
9765 | ||
9766 | match | |
9767 | gfc_match_structure_decl (void) | |
9768 | { | |
05b8fcb4 FR |
9769 | /* Counter used to give unique internal names to anonymous structures. */ |
9770 | static unsigned int gfc_structure_id = 0; | |
9771 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9772 | gfc_symbol *sym; | |
9773 | match m; | |
9774 | locus where; | |
f6288c24 | 9775 | |
05b8fcb4 FR |
9776 | if (!flag_dec_structure) |
9777 | { | |
cf004230 FR |
9778 | gfc_error ("%s at %C is a DEC extension, enable with " |
9779 | "%<-fdec-structure%>", | |
9780 | "STRUCTURE"); | |
05b8fcb4 FR |
9781 | return MATCH_ERROR; |
9782 | } | |
f6288c24 | 9783 | |
05b8fcb4 | 9784 | name[0] = '\0'; |
f6288c24 | 9785 | |
05b8fcb4 FR |
9786 | m = gfc_match (" /%n/", name); |
9787 | if (m != MATCH_YES) | |
9788 | { | |
9789 | /* Non-nested structure declarations require a structure name. */ | |
9790 | if (!gfc_comp_struct (gfc_current_state ())) | |
9791 | { | |
9792 | gfc_error ("Structure name expected in non-nested structure " | |
9793 | "declaration at %C"); | |
9794 | return MATCH_ERROR; | |
9795 | } | |
9796 | /* This is an anonymous structure; make up a unique name for it | |
9797 | (upper-case letters never make it to symbol names from the source). | |
9798 | The important thing is initializing the type variable | |
9799 | and setting gfc_new_symbol, which is immediately used by | |
9800 | parse_structure () and variable_decl () to add components of | |
9801 | this type. */ | |
9802 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9803 | } | |
f6288c24 | 9804 | |
05b8fcb4 FR |
9805 | where = gfc_current_locus; |
9806 | /* No field list allowed after non-nested structure declaration. */ | |
9807 | if (!gfc_comp_struct (gfc_current_state ()) | |
9808 | && gfc_match_eos () != MATCH_YES) | |
9809 | { | |
9810 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9811 | return MATCH_ERROR; | |
9812 | } | |
f6288c24 | 9813 | |
05b8fcb4 FR |
9814 | /* Make sure the name is not the name of an intrinsic type. */ |
9815 | if (gfc_is_intrinsic_typename (name)) | |
9816 | { | |
2f029c08 | 9817 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
05b8fcb4 FR |
9818 | " intrinsic type", name); |
9819 | return MATCH_ERROR; | |
9820 | } | |
f6288c24 | 9821 | |
05b8fcb4 FR |
9822 | /* Store the actual type symbol for the structure with an upper-case first |
9823 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 9824 | |
51f03c6b | 9825 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 9826 | return MATCH_ERROR; |
f6288c24 | 9827 | |
05b8fcb4 FR |
9828 | gfc_new_block = sym; |
9829 | return MATCH_YES; | |
f6288c24 FR |
9830 | } |
9831 | ||
90051c26 FR |
9832 | |
9833 | /* This function does some work to determine which matcher should be used to | |
58b9de9e | 9834 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
90051c26 | 9835 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
58b9de9e | 9836 | * and [parameterized] derived type declarations. */ |
90051c26 FR |
9837 | |
9838 | match | |
9839 | gfc_match_type (gfc_statement *st) | |
9840 | { | |
9841 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9842 | match m; | |
9843 | locus old_loc; | |
9844 | ||
9845 | /* Requires -fdec. */ | |
9846 | if (!flag_dec) | |
9847 | return MATCH_NO; | |
9848 | ||
9849 | m = gfc_match ("type"); | |
9850 | if (m != MATCH_YES) | |
9851 | return m; | |
9852 | /* If we already have an error in the buffer, it is probably from failing to | |
9853 | * match a derived type data declaration. Let it happen. */ | |
9854 | else if (gfc_error_flag_test ()) | |
9855 | return MATCH_NO; | |
9856 | ||
9857 | old_loc = gfc_current_locus; | |
9858 | *st = ST_NONE; | |
9859 | ||
9860 | /* If we see an attribute list before anything else it's definitely a derived | |
9861 | * type declaration. */ | |
9862 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
58b9de9e | 9863 | goto derived; |
90051c26 FR |
9864 | |
9865 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9866 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9867 | m = gfc_match_name (name); | |
9868 | if (m != MATCH_YES) | |
9869 | { | |
9870 | /* Let print match if it can, otherwise throw an error from | |
9871 | * gfc_match_derived_decl. */ | |
9872 | gfc_current_locus = old_loc; | |
9873 | if (gfc_match_print () == MATCH_YES) | |
9874 | { | |
9875 | *st = ST_WRITE; | |
9876 | return MATCH_YES; | |
9877 | } | |
58b9de9e | 9878 | goto derived; |
90051c26 FR |
9879 | } |
9880 | ||
58b9de9e FR |
9881 | /* Check for EOS. */ |
9882 | if (gfc_match_eos () == MATCH_YES) | |
90051c26 FR |
9883 | { |
9884 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9885 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9886 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9887 | * symbol which can be printed. */ | |
9888 | gfc_current_locus = old_loc; | |
9889 | m = gfc_match_derived_decl (); | |
9890 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9891 | { | |
9892 | *st = ST_DERIVED_DECL; | |
9893 | return m; | |
9894 | } | |
90051c26 | 9895 | } |
58b9de9e FR |
9896 | else |
9897 | { | |
9898 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
9899 | like <type name(parameter)>. */ | |
9900 | gfc_gobble_whitespace (); | |
9901 | bool paren = gfc_peek_ascii_char () == '('; | |
9902 | if (paren) | |
9903 | { | |
9904 | if (strcmp ("is", name) == 0) | |
9905 | goto typeis; | |
9906 | else | |
9907 | goto derived; | |
9908 | } | |
9909 | } | |
9910 | ||
9911 | /* Treat TYPE... like PRINT... */ | |
9912 | gfc_current_locus = old_loc; | |
9913 | *st = ST_WRITE; | |
9914 | return gfc_match_print (); | |
90051c26 | 9915 | |
58b9de9e FR |
9916 | derived: |
9917 | gfc_current_locus = old_loc; | |
9918 | *st = ST_DERIVED_DECL; | |
9919 | return gfc_match_derived_decl (); | |
9920 | ||
9921 | typeis: | |
9922 | gfc_current_locus = old_loc; | |
9923 | *st = ST_TYPE_IS; | |
9924 | return gfc_match_type_is (); | |
90051c26 FR |
9925 | } |
9926 | ||
9927 | ||
a8b3b0b6 CR |
9928 | /* Match the beginning of a derived type declaration. If a type name |
9929 | was the result of a function, then it is possible to have a symbol | |
9930 | already to be known as a derived type yet have no components. */ | |
9931 | ||
9932 | match | |
9933 | gfc_match_derived_decl (void) | |
9934 | { | |
9935 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 9936 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 9937 | symbol_attribute attr; |
c3f34952 | 9938 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 9939 | gfc_symbol *extended; |
a8b3b0b6 CR |
9940 | match m; |
9941 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 9942 | bool seen_attr = false; |
c3f34952 | 9943 | gfc_interface *intr = NULL, *head; |
5bab4c96 PT |
9944 | bool parameterized_type = false; |
9945 | bool seen_colons = false; | |
a8b3b0b6 | 9946 | |
f6288c24 | 9947 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
9948 | return MATCH_NO; |
9949 | ||
7d1f1e61 PT |
9950 | name[0] = '\0'; |
9951 | parent[0] = '\0'; | |
a8b3b0b6 | 9952 | gfc_clear_attr (&attr); |
7d1f1e61 | 9953 | extended = NULL; |
a8b3b0b6 CR |
9954 | |
9955 | do | |
9956 | { | |
7d1f1e61 | 9957 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
9958 | if (is_type_attr_spec == MATCH_ERROR) |
9959 | return MATCH_ERROR; | |
e7303e85 FXC |
9960 | if (is_type_attr_spec == MATCH_YES) |
9961 | seen_attr = true; | |
a8b3b0b6 | 9962 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 9963 | |
63a3341a PT |
9964 | /* Deal with derived type extensions. The extension attribute has |
9965 | been added to 'attr' but now the parent type must be found and | |
9966 | checked. */ | |
7d1f1e61 PT |
9967 | if (parent[0]) |
9968 | extended = check_extended_derived_type (parent); | |
9969 | ||
9970 | if (parent[0] && !extended) | |
9971 | return MATCH_ERROR; | |
9972 | ||
5bab4c96 PT |
9973 | m = gfc_match (" ::"); |
9974 | if (m == MATCH_YES) | |
9975 | { | |
9976 | seen_colons = true; | |
9977 | } | |
9978 | else if (seen_attr) | |
6de9cd9a DN |
9979 | { |
9980 | gfc_error ("Expected :: in TYPE definition at %C"); | |
9981 | return MATCH_ERROR; | |
9982 | } | |
9983 | ||
5bab4c96 | 9984 | m = gfc_match (" %n ", name); |
6de9cd9a DN |
9985 | if (m != MATCH_YES) |
9986 | return m; | |
9987 | ||
5bab4c96 PT |
9988 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
9989 | derived type named 'is'. | |
9990 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
9991 | and checking if this is a(n intrinsic) typename. his picks up | |
9992 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
9993 | if (gfc_peek_ascii_char () == '(') | |
9994 | { | |
9995 | if (gfc_current_state () == COMP_SELECT_TYPE | |
9996 | || (!seen_colons && !strcmp (name, "is"))) | |
9997 | return MATCH_NO; | |
9998 | parameterized_type = true; | |
9999 | } | |
10000 | ||
10001 | m = gfc_match_eos (); | |
10002 | if (m != MATCH_YES && !parameterized_type) | |
10003 | return m; | |
10004 | ||
e9c06563 TB |
10005 | /* Make sure the name is not the name of an intrinsic type. */ |
10006 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 10007 | { |
c4100eae | 10008 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 10009 | "type", name); |
6de9cd9a DN |
10010 | return MATCH_ERROR; |
10011 | } | |
10012 | ||
c3f34952 | 10013 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
10014 | return MATCH_ERROR; |
10015 | ||
c3f34952 | 10016 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 10017 | { |
1072bff8 SK |
10018 | if (gensym->ts.u.derived) |
10019 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10020 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10021 | else | |
10022 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10023 | gensym->name); | |
c3f34952 TB |
10024 | return MATCH_ERROR; |
10025 | } | |
10026 | ||
10027 | if (!gensym->attr.generic | |
524af0d6 | 10028 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10029 | return MATCH_ERROR; |
10030 | ||
10031 | if (!gensym->attr.function | |
524af0d6 | 10032 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
10033 | return MATCH_ERROR; |
10034 | ||
10035 | sym = gfc_find_dt_in_generic (gensym); | |
10036 | ||
10037 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10038 | { | |
c4100eae | 10039 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 10040 | "defined", sym->name); |
6de9cd9a DN |
10041 | return MATCH_ERROR; |
10042 | } | |
10043 | ||
c3f34952 TB |
10044 | if (!sym) |
10045 | { | |
10046 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 10047 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 10048 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
10049 | head = gensym->generic; |
10050 | intr = gfc_get_interface (); | |
10051 | intr->sym = sym; | |
10052 | intr->where = gfc_current_locus; | |
10053 | intr->sym->declared_at = gfc_current_locus; | |
10054 | intr->next = head; | |
10055 | gensym->generic = intr; | |
10056 | gensym->attr.if_source = IFSRC_DECL; | |
10057 | } | |
10058 | ||
6de9cd9a DN |
10059 | /* The symbol may already have the derived attribute without the |
10060 | components. The ways this can happen is via a function | |
10061 | definition, an INTRINSIC statement or a subtype in another | |
10062 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 10063 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 10064 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 10065 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
10066 | return MATCH_ERROR; |
10067 | ||
6de9cd9a | 10068 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 10069 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 10070 | return MATCH_ERROR; |
c3f34952 TB |
10071 | else if (sym->attr.access == ACCESS_UNKNOWN |
10072 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 10073 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 10074 | sym->name, NULL)) |
c3f34952 TB |
10075 | return MATCH_ERROR; |
10076 | ||
10077 | if (sym->attr.access != ACCESS_UNKNOWN | |
10078 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10079 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 10080 | |
a8b3b0b6 CR |
10081 | /* See if the derived type was labeled as bind(c). */ |
10082 | if (attr.is_bind_c != 0) | |
10083 | sym->attr.is_bind_c = attr.is_bind_c; | |
10084 | ||
34523524 DK |
10085 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10086 | if (!sym->f2k_derived) | |
10087 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 10088 | |
5bab4c96 PT |
10089 | if (parameterized_type) |
10090 | { | |
276515e6 PT |
10091 | /* Ignore error or mismatches by going to the end of the statement |
10092 | in order to avoid the component declarations causing problems. */ | |
10093 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10094 | if (m != MATCH_YES) | |
10095 | gfc_error_recovery (); | |
5bab4c96 PT |
10096 | m = gfc_match_eos (); |
10097 | if (m != MATCH_YES) | |
f59986b2 PT |
10098 | { |
10099 | gfc_error_recovery (); | |
10100 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10101 | } | |
5bab4c96 PT |
10102 | sym->attr.pdt_template = 1; |
10103 | } | |
10104 | ||
7d1f1e61 PT |
10105 | if (extended && !sym->components) |
10106 | { | |
10107 | gfc_component *p; | |
5bab4c96 | 10108 | gfc_formal_arglist *f, *g, *h; |
7d1f1e61 PT |
10109 | |
10110 | /* Add the extended derived type as the first component. */ | |
10111 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
10112 | extended->refs++; |
10113 | gfc_set_sym_referenced (extended); | |
10114 | ||
10115 | p->ts.type = BT_DERIVED; | |
bc21d315 | 10116 | p->ts.u.derived = extended; |
7d1f1e61 | 10117 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 10118 | |
7c1dab0d JW |
10119 | /* Set extension level. */ |
10120 | if (extended->attr.extension == 255) | |
10121 | { | |
10122 | /* Since the extension field is 8 bit wide, we can only have | |
10123 | up to 255 extension levels. */ | |
c4100eae | 10124 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
10125 | extended->name, &extended->declared_at); |
10126 | return MATCH_ERROR; | |
10127 | } | |
10128 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
10129 | |
10130 | /* Provide the links between the extended type and its extension. */ | |
10131 | if (!extended->f2k_derived) | |
10132 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
5bab4c96 PT |
10133 | |
10134 | /* Copy the extended type-param-name-list from the extended type, | |
10135 | append those of the extension and add the whole lot to the | |
10136 | extension. */ | |
10137 | if (extended->attr.pdt_template) | |
10138 | { | |
10139 | g = h = NULL; | |
10140 | sym->attr.pdt_template = 1; | |
10141 | for (f = extended->formal; f; f = f->next) | |
10142 | { | |
10143 | if (f == extended->formal) | |
10144 | { | |
10145 | g = gfc_get_formal_arglist (); | |
10146 | h = g; | |
10147 | } | |
10148 | else | |
10149 | { | |
10150 | g->next = gfc_get_formal_arglist (); | |
10151 | g = g->next; | |
10152 | } | |
10153 | g->sym = f->sym; | |
10154 | } | |
10155 | g->next = sym->formal; | |
10156 | sym->formal = h; | |
10157 | } | |
7d1f1e61 PT |
10158 | } |
10159 | ||
7c1dab0d JW |
10160 | if (!sym->hash_value) |
10161 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 10162 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 10163 | |
52f49934 DK |
10164 | /* Take over the ABSTRACT attribute. */ |
10165 | sym->attr.abstract = attr.abstract; | |
10166 | ||
6de9cd9a DN |
10167 | gfc_new_block = sym; |
10168 | ||
10169 | return MATCH_YES; | |
10170 | } | |
83d890b9 AL |
10171 | |
10172 | ||
f5acf0f2 | 10173 | /* Cray Pointees can be declared as: |
b3aefde2 | 10174 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 10175 | |
32e8bb8e | 10176 | match |
83d890b9 AL |
10177 | gfc_mod_pointee_as (gfc_array_spec *as) |
10178 | { | |
10179 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10180 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 10181 | as->cp_was_assumed = true; |
83d890b9 AL |
10182 | else if (as->type == AS_ASSUMED_SHAPE) |
10183 | { | |
10184 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10185 | return MATCH_ERROR; | |
10186 | } | |
10187 | return MATCH_YES; | |
10188 | } | |
25d8f0a2 TS |
10189 | |
10190 | ||
f5acf0f2 PT |
10191 | /* Match the enum definition statement, here we are trying to match |
10192 | the first line of enum definition statement. | |
25d8f0a2 TS |
10193 | Returns MATCH_YES if match is found. */ |
10194 | ||
10195 | match | |
10196 | gfc_match_enum (void) | |
10197 | { | |
10198 | match m; | |
f5acf0f2 | 10199 | |
25d8f0a2 TS |
10200 | m = gfc_match_eos (); |
10201 | if (m != MATCH_YES) | |
10202 | return m; | |
10203 | ||
524af0d6 | 10204 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
10205 | return MATCH_ERROR; |
10206 | ||
10207 | return MATCH_YES; | |
10208 | } | |
10209 | ||
10210 | ||
31224396 SK |
10211 | /* Returns an initializer whose value is one higher than the value of the |
10212 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10213 | initializers value will be set to zero. The initializer's kind | |
10214 | will be set to gfc_c_int_kind. | |
10215 | ||
10216 | If -fshort-enums is given, the appropriate kind will be selected | |
10217 | later after all enumerators have been parsed. A warning is issued | |
10218 | here if an initializer exceeds gfc_c_int_kind. */ | |
10219 | ||
10220 | static gfc_expr * | |
10221 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10222 | { | |
10223 | gfc_expr *result; | |
b7e75771 | 10224 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
10225 | |
10226 | mpz_init (result->value.integer); | |
10227 | ||
10228 | if (last_initializer != NULL) | |
10229 | { | |
10230 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10231 | result->where = last_initializer->where; | |
10232 | ||
10233 | if (gfc_check_integer_range (result->value.integer, | |
10234 | gfc_c_int_kind) != ARITH_OK) | |
10235 | { | |
10236 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10237 | return NULL; | |
10238 | } | |
10239 | } | |
10240 | else | |
10241 | { | |
10242 | /* Control comes here, if it's the very first enumerator and no | |
10243 | initializer has been given. It will be initialized to zero. */ | |
10244 | mpz_set_si (result->value.integer, 0); | |
10245 | } | |
10246 | ||
10247 | return result; | |
10248 | } | |
10249 | ||
10250 | ||
6133c68a TS |
10251 | /* Match a variable name with an optional initializer. When this |
10252 | subroutine is called, a variable is expected to be parsed next. | |
10253 | Depending on what is happening at the moment, updates either the | |
10254 | symbol table or the current interface. */ | |
10255 | ||
10256 | static match | |
10257 | enumerator_decl (void) | |
10258 | { | |
10259 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10260 | gfc_expr *initializer; | |
10261 | gfc_array_spec *as = NULL; | |
10262 | gfc_symbol *sym; | |
10263 | locus var_locus; | |
10264 | match m; | |
524af0d6 | 10265 | bool t; |
6133c68a TS |
10266 | locus old_locus; |
10267 | ||
10268 | initializer = NULL; | |
10269 | old_locus = gfc_current_locus; | |
10270 | ||
10271 | /* When we get here, we've just matched a list of attributes and | |
10272 | maybe a type and a double colon. The next thing we expect to see | |
10273 | is the name of the symbol. */ | |
10274 | m = gfc_match_name (name); | |
10275 | if (m != MATCH_YES) | |
10276 | goto cleanup; | |
10277 | ||
10278 | var_locus = gfc_current_locus; | |
10279 | ||
10280 | /* OK, we've successfully matched the declaration. Now put the | |
10281 | symbol in the current namespace. If we fail to create the symbol, | |
10282 | bail out. */ | |
524af0d6 | 10283 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
10284 | { |
10285 | m = MATCH_ERROR; | |
10286 | goto cleanup; | |
10287 | } | |
10288 | ||
10289 | /* The double colon must be present in order to have initializers. | |
10290 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10291 | if (colon_seen) | |
10292 | { | |
10293 | if (gfc_match_char ('=') == MATCH_YES) | |
10294 | { | |
10295 | m = gfc_match_init_expr (&initializer); | |
10296 | if (m == MATCH_NO) | |
10297 | { | |
10298 | gfc_error ("Expected an initialization expression at %C"); | |
10299 | m = MATCH_ERROR; | |
10300 | } | |
10301 | ||
10302 | if (m != MATCH_YES) | |
10303 | goto cleanup; | |
10304 | } | |
10305 | } | |
10306 | ||
10307 | /* If we do not have an initializer, the initialization value of the | |
10308 | previous enumerator (stored in last_initializer) is incremented | |
10309 | by 1 and is used to initialize the current enumerator. */ | |
10310 | if (initializer == NULL) | |
31224396 | 10311 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 10312 | |
6133c68a TS |
10313 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10314 | { | |
01e64c3d JJ |
10315 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10316 | &var_locus); | |
d51347f9 | 10317 | m = MATCH_ERROR; |
6133c68a TS |
10318 | goto cleanup; |
10319 | } | |
10320 | ||
10321 | /* Store this current initializer, for the next enumerator variable | |
10322 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10323 | use last_initializer below. */ | |
10324 | last_initializer = initializer; | |
10325 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10326 | ||
10327 | /* Maintain enumerator history. */ | |
10328 | gfc_find_symbol (name, NULL, 0, &sym); | |
10329 | create_enum_history (sym, last_initializer); | |
10330 | ||
524af0d6 | 10331 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
10332 | |
10333 | cleanup: | |
10334 | /* Free stuff up and return. */ | |
10335 | gfc_free_expr (initializer); | |
10336 | ||
10337 | return m; | |
10338 | } | |
10339 | ||
10340 | ||
66e4ab31 | 10341 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
10342 | |
10343 | match | |
10344 | gfc_match_enumerator_def (void) | |
10345 | { | |
10346 | match m; | |
524af0d6 | 10347 | bool t; |
d51347f9 | 10348 | |
25d8f0a2 | 10349 | gfc_clear_ts (¤t_ts); |
d51347f9 | 10350 | |
25d8f0a2 TS |
10351 | m = gfc_match (" enumerator"); |
10352 | if (m != MATCH_YES) | |
10353 | return m; | |
6133c68a TS |
10354 | |
10355 | m = gfc_match (" :: "); | |
10356 | if (m == MATCH_ERROR) | |
10357 | return m; | |
10358 | ||
10359 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 10360 | |
25d8f0a2 TS |
10361 | if (gfc_current_state () != COMP_ENUM) |
10362 | { | |
10363 | gfc_error ("ENUM definition statement expected before %C"); | |
10364 | gfc_free_enum_history (); | |
10365 | return MATCH_ERROR; | |
10366 | } | |
10367 | ||
10368 | (¤t_ts)->type = BT_INTEGER; | |
10369 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 10370 | |
6133c68a TS |
10371 | gfc_clear_attr (¤t_attr); |
10372 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 10373 | if (!t) |
25d8f0a2 | 10374 | { |
6133c68a | 10375 | m = MATCH_ERROR; |
25d8f0a2 TS |
10376 | goto cleanup; |
10377 | } | |
10378 | ||
25d8f0a2 TS |
10379 | for (;;) |
10380 | { | |
6133c68a | 10381 | m = enumerator_decl (); |
25d8f0a2 | 10382 | if (m == MATCH_ERROR) |
01e64c3d JJ |
10383 | { |
10384 | gfc_free_enum_history (); | |
10385 | goto cleanup; | |
10386 | } | |
25d8f0a2 TS |
10387 | if (m == MATCH_NO) |
10388 | break; | |
10389 | ||
10390 | if (gfc_match_eos () == MATCH_YES) | |
10391 | goto cleanup; | |
10392 | if (gfc_match_char (',') != MATCH_YES) | |
10393 | break; | |
10394 | } | |
10395 | ||
10396 | if (gfc_current_state () == COMP_ENUM) | |
10397 | { | |
10398 | gfc_free_enum_history (); | |
10399 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10400 | m = MATCH_ERROR; | |
10401 | } | |
10402 | ||
10403 | cleanup: | |
10404 | gfc_free_array_spec (current_as); | |
10405 | current_as = NULL; | |
10406 | return m; | |
10407 | ||
10408 | } | |
10409 | ||
f6fad28e | 10410 | |
30b608eb DK |
10411 | /* Match binding attributes. */ |
10412 | ||
10413 | static match | |
713485cc | 10414 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
10415 | { |
10416 | bool found_passing = false; | |
713485cc | 10417 | bool seen_ptr = false; |
90661f26 | 10418 | match m = MATCH_YES; |
30b608eb | 10419 | |
eea58adb | 10420 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
10421 | this case the defaults are in there. */ |
10422 | ba->access = ACCESS_UNKNOWN; | |
10423 | ba->pass_arg = NULL; | |
10424 | ba->pass_arg_num = 0; | |
10425 | ba->nopass = 0; | |
10426 | ba->non_overridable = 0; | |
b0e5fa94 | 10427 | ba->deferred = 0; |
90661f26 | 10428 | ba->ppc = ppc; |
30b608eb DK |
10429 | |
10430 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
10431 | m = gfc_match_char (','); |
10432 | if (m == MATCH_NO) | |
10433 | goto done; | |
30b608eb DK |
10434 | |
10435 | do | |
10436 | { | |
e157f736 DK |
10437 | /* Access specifier. */ |
10438 | ||
10439 | m = gfc_match (" public"); | |
30b608eb DK |
10440 | if (m == MATCH_ERROR) |
10441 | goto error; | |
10442 | if (m == MATCH_YES) | |
10443 | { | |
e157f736 | 10444 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10445 | { |
e157f736 | 10446 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10447 | goto error; |
10448 | } | |
10449 | ||
e157f736 | 10450 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
10451 | continue; |
10452 | } | |
10453 | ||
e157f736 | 10454 | m = gfc_match (" private"); |
30b608eb DK |
10455 | if (m == MATCH_ERROR) |
10456 | goto error; | |
10457 | if (m == MATCH_YES) | |
10458 | { | |
e157f736 | 10459 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 10460 | { |
e157f736 | 10461 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
10462 | goto error; |
10463 | } | |
10464 | ||
e157f736 | 10465 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
10466 | continue; |
10467 | } | |
10468 | ||
e157f736 DK |
10469 | /* If inside GENERIC, the following is not allowed. */ |
10470 | if (!generic) | |
30b608eb | 10471 | { |
30b608eb | 10472 | |
e157f736 DK |
10473 | /* NOPASS flag. */ |
10474 | m = gfc_match (" nopass"); | |
10475 | if (m == MATCH_ERROR) | |
10476 | goto error; | |
10477 | if (m == MATCH_YES) | |
30b608eb | 10478 | { |
e157f736 DK |
10479 | if (found_passing) |
10480 | { | |
10481 | gfc_error ("Binding attributes already specify passing," | |
10482 | " illegal NOPASS at %C"); | |
10483 | goto error; | |
10484 | } | |
10485 | ||
10486 | found_passing = true; | |
10487 | ba->nopass = 1; | |
10488 | continue; | |
30b608eb DK |
10489 | } |
10490 | ||
e157f736 DK |
10491 | /* PASS possibly including argument. */ |
10492 | m = gfc_match (" pass"); | |
10493 | if (m == MATCH_ERROR) | |
10494 | goto error; | |
10495 | if (m == MATCH_YES) | |
30b608eb | 10496 | { |
e157f736 DK |
10497 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10498 | ||
10499 | if (found_passing) | |
10500 | { | |
10501 | gfc_error ("Binding attributes already specify passing," | |
10502 | " illegal PASS at %C"); | |
10503 | goto error; | |
10504 | } | |
10505 | ||
10506 | m = gfc_match (" ( %n )", arg); | |
10507 | if (m == MATCH_ERROR) | |
10508 | goto error; | |
10509 | if (m == MATCH_YES) | |
51f03c6b | 10510 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
10511 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10512 | ||
10513 | found_passing = true; | |
10514 | ba->nopass = 0; | |
10515 | continue; | |
30b608eb DK |
10516 | } |
10517 | ||
713485cc JW |
10518 | if (ppc) |
10519 | { | |
10520 | /* POINTER flag. */ | |
10521 | m = gfc_match (" pointer"); | |
10522 | if (m == MATCH_ERROR) | |
10523 | goto error; | |
10524 | if (m == MATCH_YES) | |
10525 | { | |
10526 | if (seen_ptr) | |
10527 | { | |
10528 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10529 | goto error; | |
10530 | } | |
10531 | ||
10532 | seen_ptr = true; | |
713485cc JW |
10533 | continue; |
10534 | } | |
10535 | } | |
10536 | else | |
10537 | { | |
10538 | /* NON_OVERRIDABLE flag. */ | |
10539 | m = gfc_match (" non_overridable"); | |
10540 | if (m == MATCH_ERROR) | |
10541 | goto error; | |
10542 | if (m == MATCH_YES) | |
10543 | { | |
10544 | if (ba->non_overridable) | |
10545 | { | |
10546 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10547 | goto error; | |
10548 | } | |
10549 | ||
10550 | ba->non_overridable = 1; | |
10551 | continue; | |
10552 | } | |
10553 | ||
10554 | /* DEFERRED flag. */ | |
10555 | m = gfc_match (" deferred"); | |
10556 | if (m == MATCH_ERROR) | |
10557 | goto error; | |
10558 | if (m == MATCH_YES) | |
10559 | { | |
10560 | if (ba->deferred) | |
10561 | { | |
10562 | gfc_error ("Duplicate DEFERRED at %C"); | |
10563 | goto error; | |
10564 | } | |
10565 | ||
10566 | ba->deferred = 1; | |
10567 | continue; | |
10568 | } | |
10569 | } | |
10570 | ||
30b608eb DK |
10571 | } |
10572 | ||
10573 | /* Nothing matching found. */ | |
e157f736 DK |
10574 | if (generic) |
10575 | gfc_error ("Expected access-specifier at %C"); | |
10576 | else | |
10577 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
10578 | goto error; |
10579 | } | |
10580 | while (gfc_match_char (',') == MATCH_YES); | |
10581 | ||
b0e5fa94 DK |
10582 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10583 | if (ba->non_overridable && ba->deferred) | |
10584 | { | |
10585 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10586 | goto error; | |
10587 | } | |
10588 | ||
90661f26 JW |
10589 | m = MATCH_YES; |
10590 | ||
10591 | done: | |
e157f736 | 10592 | if (ba->access == ACCESS_UNKNOWN) |
d4beaf2a JW |
10593 | ba->access = ppc ? gfc_current_block()->component_access |
10594 | : gfc_typebound_default_access; | |
e157f736 | 10595 | |
713485cc JW |
10596 | if (ppc && !seen_ptr) |
10597 | { | |
10598 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10599 | " at %C"); | |
10600 | goto error; | |
10601 | } | |
10602 | ||
90661f26 | 10603 | return m; |
30b608eb DK |
10604 | |
10605 | error: | |
30b608eb DK |
10606 | return MATCH_ERROR; |
10607 | } | |
10608 | ||
10609 | ||
10610 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10611 | ||
10612 | static match | |
10613 | match_procedure_in_type (void) | |
10614 | { | |
10615 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10616 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 10617 | char* target = NULL, *ifc = NULL; |
3e15518b | 10618 | gfc_typebound_proc tb; |
30b608eb DK |
10619 | bool seen_colons; |
10620 | bool seen_attrs; | |
10621 | match m; | |
10622 | gfc_symtree* stree; | |
10623 | gfc_namespace* ns; | |
10624 | gfc_symbol* block; | |
1be17993 | 10625 | int num; |
30b608eb DK |
10626 | |
10627 | /* Check current state. */ | |
10628 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10629 | block = gfc_state_stack->previous->sym; | |
10630 | gcc_assert (block); | |
10631 | ||
b0e5fa94 | 10632 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
10633 | if (gfc_match (" (") == MATCH_YES) |
10634 | { | |
b0e5fa94 DK |
10635 | m = gfc_match_name (target_buf); |
10636 | if (m == MATCH_ERROR) | |
10637 | return m; | |
10638 | if (m != MATCH_YES) | |
10639 | { | |
a4d9b221 | 10640 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
10641 | return MATCH_ERROR; |
10642 | } | |
10643 | ||
10644 | if (gfc_match (" )") != MATCH_YES) | |
10645 | { | |
a4d9b221 | 10646 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
10647 | return MATCH_ERROR; |
10648 | } | |
10649 | ||
1be17993 | 10650 | ifc = target_buf; |
30b608eb DK |
10651 | } |
10652 | ||
10653 | /* Construct the data structure. */ | |
ff5b6492 | 10654 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 10655 | tb.where = gfc_current_locus; |
30b608eb DK |
10656 | |
10657 | /* Match binding attributes. */ | |
3e15518b | 10658 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
10659 | if (m == MATCH_ERROR) |
10660 | return m; | |
10661 | seen_attrs = (m == MATCH_YES); | |
10662 | ||
1be17993 | 10663 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 10664 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
10665 | { |
10666 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10667 | return MATCH_ERROR; | |
10668 | } | |
3e15518b | 10669 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
10670 | { |
10671 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10672 | return MATCH_ERROR; | |
10673 | } | |
10674 | ||
30b608eb DK |
10675 | /* Match the colons. */ |
10676 | m = gfc_match (" ::"); | |
10677 | if (m == MATCH_ERROR) | |
10678 | return m; | |
10679 | seen_colons = (m == MATCH_YES); | |
10680 | if (seen_attrs && !seen_colons) | |
10681 | { | |
a4d9b221 | 10682 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
10683 | return MATCH_ERROR; |
10684 | } | |
10685 | ||
f5acf0f2 | 10686 | /* Match the binding names. */ |
1be17993 | 10687 | for(num=1;;num++) |
30b608eb | 10688 | { |
1be17993 JW |
10689 | m = gfc_match_name (name); |
10690 | if (m == MATCH_ERROR) | |
10691 | return m; | |
10692 | if (m == MATCH_NO) | |
b0e5fa94 | 10693 | { |
1be17993 | 10694 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
10695 | return MATCH_ERROR; |
10696 | } | |
10697 | ||
524af0d6 | 10698 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 10699 | return MATCH_ERROR; |
30b608eb | 10700 | |
1be17993 JW |
10701 | /* Try to match the '=> target', if it's there. */ |
10702 | target = ifc; | |
10703 | m = gfc_match (" =>"); | |
30b608eb DK |
10704 | if (m == MATCH_ERROR) |
10705 | return m; | |
1be17993 | 10706 | if (m == MATCH_YES) |
30b608eb | 10707 | { |
3e15518b | 10708 | if (tb.deferred) |
1be17993 | 10709 | { |
a4d9b221 | 10710 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
10711 | return MATCH_ERROR; |
10712 | } | |
10713 | ||
10714 | if (!seen_colons) | |
10715 | { | |
a4d9b221 | 10716 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
10717 | " at %C"); |
10718 | return MATCH_ERROR; | |
10719 | } | |
10720 | ||
10721 | m = gfc_match_name (target_buf); | |
10722 | if (m == MATCH_ERROR) | |
10723 | return m; | |
10724 | if (m == MATCH_NO) | |
10725 | { | |
a4d9b221 | 10726 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
10727 | return MATCH_ERROR; |
10728 | } | |
10729 | target = target_buf; | |
30b608eb | 10730 | } |
30b608eb | 10731 | |
1be17993 JW |
10732 | /* If no target was found, it has the same name as the binding. */ |
10733 | if (!target) | |
10734 | target = name; | |
30b608eb | 10735 | |
1be17993 JW |
10736 | /* Get the namespace to insert the symbols into. */ |
10737 | ns = block->f2k_derived; | |
10738 | gcc_assert (ns); | |
30b608eb | 10739 | |
1be17993 | 10740 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 10741 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 10742 | { |
c4100eae | 10743 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
10744 | "is not ABSTRACT", block->name); |
10745 | return MATCH_ERROR; | |
10746 | } | |
30b608eb | 10747 | |
1be17993 | 10748 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 10749 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
10750 | be already there but then typebound is still NULL. */ |
10751 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 10752 | if (stree && stree->n.tb) |
1be17993 | 10753 | { |
c4100eae MLI |
10754 | gfc_error ("There is already a procedure with binding name %qs for " |
10755 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
10756 | return MATCH_ERROR; |
10757 | } | |
b0e5fa94 | 10758 | |
1be17993 | 10759 | /* Insert it and set attributes. */ |
30b608eb | 10760 | |
9f23af48 MM |
10761 | if (!stree) |
10762 | { | |
10763 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10764 | gcc_assert (stree); | |
10765 | } | |
3e15518b | 10766 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 10767 | |
3e15518b JW |
10768 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10769 | false)) | |
1be17993 | 10770 | return MATCH_ERROR; |
3e15518b | 10771 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
10772 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10773 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 10774 | |
1be17993 JW |
10775 | if (gfc_match_eos () == MATCH_YES) |
10776 | return MATCH_YES; | |
10777 | if (gfc_match_char (',') != MATCH_YES) | |
10778 | goto syntax; | |
e34ccb4c | 10779 | } |
30b608eb | 10780 | |
1be17993 JW |
10781 | syntax: |
10782 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10783 | return MATCH_ERROR; | |
30b608eb DK |
10784 | } |
10785 | ||
10786 | ||
e157f736 DK |
10787 | /* Match a GENERIC procedure binding inside a derived type. */ |
10788 | ||
10789 | match | |
10790 | gfc_match_generic (void) | |
10791 | { | |
10792 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 10793 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
10794 | gfc_symbol* block; |
10795 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10796 | gfc_typebound_proc* tb; | |
e157f736 | 10797 | gfc_namespace* ns; |
94747289 DK |
10798 | interface_type op_type; |
10799 | gfc_intrinsic_op op; | |
e157f736 DK |
10800 | match m; |
10801 | ||
10802 | /* Check current state. */ | |
10803 | if (gfc_current_state () == COMP_DERIVED) | |
10804 | { | |
10805 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10806 | return MATCH_ERROR; | |
10807 | } | |
10808 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10809 | return MATCH_NO; | |
10810 | block = gfc_state_stack->previous->sym; | |
10811 | ns = block->f2k_derived; | |
10812 | gcc_assert (block && ns); | |
10813 | ||
ff5b6492 MM |
10814 | memset (&tbattr, 0, sizeof (tbattr)); |
10815 | tbattr.where = gfc_current_locus; | |
10816 | ||
e157f736 | 10817 | /* See if we get an access-specifier. */ |
713485cc | 10818 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
10819 | if (m == MATCH_ERROR) |
10820 | goto error; | |
10821 | ||
10822 | /* Now the colons, those are required. */ | |
10823 | if (gfc_match (" ::") != MATCH_YES) | |
10824 | { | |
a4d9b221 | 10825 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
10826 | goto error; |
10827 | } | |
10828 | ||
94747289 DK |
10829 | /* Match the binding name; depending on type (operator / generic) format |
10830 | it for future error messages into bind_name. */ | |
f5acf0f2 | 10831 | |
94747289 | 10832 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
10833 | if (m == MATCH_ERROR) |
10834 | return MATCH_ERROR; | |
10835 | if (m == MATCH_NO) | |
10836 | { | |
94747289 | 10837 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
10838 | goto error; |
10839 | } | |
10840 | ||
94747289 | 10841 | switch (op_type) |
e157f736 | 10842 | { |
94747289 | 10843 | case INTERFACE_GENERIC: |
e73d3ca6 | 10844 | case INTERFACE_DTIO: |
94747289 DK |
10845 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10846 | break; | |
f5acf0f2 | 10847 | |
94747289 DK |
10848 | case INTERFACE_USER_OP: |
10849 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10850 | break; | |
f5acf0f2 | 10851 | |
94747289 DK |
10852 | case INTERFACE_INTRINSIC_OP: |
10853 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10854 | gfc_op2string (op)); | |
10855 | break; | |
10856 | ||
377e37c1 SK |
10857 | case INTERFACE_NAMELESS: |
10858 | gfc_error ("Malformed GENERIC statement at %C"); | |
10859 | goto error; | |
10860 | break; | |
10861 | ||
94747289 DK |
10862 | default: |
10863 | gcc_unreachable (); | |
10864 | } | |
e34ccb4c | 10865 | |
94747289 DK |
10866 | /* Match the required =>. */ |
10867 | if (gfc_match (" =>") != MATCH_YES) | |
10868 | { | |
a4d9b221 | 10869 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
10870 | goto error; |
10871 | } | |
f5acf0f2 | 10872 | |
94747289 DK |
10873 | /* Try to find existing GENERIC binding with this name / for this operator; |
10874 | if there is something, check that it is another GENERIC and then extend | |
10875 | it rather than building a new node. Otherwise, create it and put it | |
10876 | at the right position. */ | |
10877 | ||
10878 | switch (op_type) | |
10879 | { | |
e73d3ca6 | 10880 | case INTERFACE_DTIO: |
94747289 DK |
10881 | case INTERFACE_USER_OP: |
10882 | case INTERFACE_GENERIC: | |
10883 | { | |
10884 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10885 | gfc_symtree* st; | |
10886 | ||
10887 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 10888 | tb = st ? st->n.tb : NULL; |
94747289 DK |
10889 | break; |
10890 | } | |
10891 | ||
10892 | case INTERFACE_INTRINSIC_OP: | |
10893 | tb = ns->tb_op[op]; | |
10894 | break; | |
10895 | ||
10896 | default: | |
10897 | gcc_unreachable (); | |
10898 | } | |
10899 | ||
10900 | if (tb) | |
10901 | { | |
e34ccb4c | 10902 | if (!tb->is_generic) |
e157f736 | 10903 | { |
94747289 | 10904 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 10905 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 10906 | " %qs for the derived type %qs at %C", |
94747289 | 10907 | bind_name, block->name); |
e157f736 DK |
10908 | goto error; |
10909 | } | |
10910 | ||
e157f736 DK |
10911 | if (tb->access != tbattr.access) |
10912 | { | |
10913 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 10914 | " defined binding %qs", bind_name); |
e157f736 DK |
10915 | goto error; |
10916 | } | |
10917 | } | |
10918 | else | |
10919 | { | |
3e15518b | 10920 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
10921 | tb->where = gfc_current_locus; |
10922 | tb->access = tbattr.access; | |
10923 | tb->is_generic = 1; | |
10924 | tb->u.generic = NULL; | |
94747289 DK |
10925 | |
10926 | switch (op_type) | |
10927 | { | |
e73d3ca6 | 10928 | case INTERFACE_DTIO: |
94747289 DK |
10929 | case INTERFACE_GENERIC: |
10930 | case INTERFACE_USER_OP: | |
10931 | { | |
10932 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
10933 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10934 | &ns->tb_sym_root, name); | |
94747289 DK |
10935 | gcc_assert (st); |
10936 | st->n.tb = tb; | |
10937 | ||
10938 | break; | |
10939 | } | |
f5acf0f2 | 10940 | |
94747289 DK |
10941 | case INTERFACE_INTRINSIC_OP: |
10942 | ns->tb_op[op] = tb; | |
10943 | break; | |
10944 | ||
10945 | default: | |
10946 | gcc_unreachable (); | |
10947 | } | |
e157f736 DK |
10948 | } |
10949 | ||
10950 | /* Now, match all following names as specific targets. */ | |
10951 | do | |
10952 | { | |
10953 | gfc_symtree* target_st; | |
10954 | gfc_tbp_generic* target; | |
10955 | ||
10956 | m = gfc_match_name (name); | |
10957 | if (m == MATCH_ERROR) | |
10958 | goto error; | |
10959 | if (m == MATCH_NO) | |
10960 | { | |
10961 | gfc_error ("Expected specific binding name at %C"); | |
10962 | goto error; | |
10963 | } | |
10964 | ||
e34ccb4c | 10965 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
10966 | |
10967 | /* See if this is a duplicate specification. */ | |
10968 | for (target = tb->u.generic; target; target = target->next) | |
10969 | if (target_st == target->specific_st) | |
10970 | { | |
c4100eae MLI |
10971 | gfc_error ("%qs already defined as specific binding for the" |
10972 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
10973 | goto error; |
10974 | } | |
10975 | ||
e157f736 DK |
10976 | target = gfc_get_tbp_generic (); |
10977 | target->specific_st = target_st; | |
10978 | target->specific = NULL; | |
10979 | target->next = tb->u.generic; | |
218e1228 TB |
10980 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
10981 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
10982 | tb->u.generic = target; |
10983 | } | |
10984 | while (gfc_match (" ,") == MATCH_YES); | |
10985 | ||
10986 | /* Here should be the end. */ | |
10987 | if (gfc_match_eos () != MATCH_YES) | |
10988 | { | |
10989 | gfc_error ("Junk after GENERIC binding at %C"); | |
10990 | goto error; | |
10991 | } | |
10992 | ||
10993 | return MATCH_YES; | |
10994 | ||
10995 | error: | |
10996 | return MATCH_ERROR; | |
10997 | } | |
10998 | ||
10999 | ||
34523524 DK |
11000 | /* Match a FINAL declaration inside a derived type. */ |
11001 | ||
11002 | match | |
11003 | gfc_match_final_decl (void) | |
11004 | { | |
11005 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11006 | gfc_symbol* sym; | |
11007 | match m; | |
11008 | gfc_namespace* module_ns; | |
11009 | bool first, last; | |
30b608eb | 11010 | gfc_symbol* block; |
34523524 | 11011 | |
33344e0f JW |
11012 | if (gfc_current_form == FORM_FREE) |
11013 | { | |
11014 | char c = gfc_peek_ascii_char (); | |
11015 | if (!gfc_is_whitespace (c) && c != ':') | |
11016 | return MATCH_NO; | |
11017 | } | |
f5acf0f2 | 11018 | |
30b608eb | 11019 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 11020 | { |
33344e0f JW |
11021 | if (gfc_current_form == FORM_FIXED) |
11022 | return MATCH_NO; | |
11023 | ||
34523524 | 11024 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 11025 | "CONTAINS section"); |
34523524 DK |
11026 | return MATCH_ERROR; |
11027 | } | |
11028 | ||
30b608eb DK |
11029 | block = gfc_state_stack->previous->sym; |
11030 | gcc_assert (block); | |
34523524 | 11031 | |
30b608eb DK |
11032 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11033 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
11034 | { |
11035 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11036 | " specification part of a MODULE"); | |
11037 | return MATCH_ERROR; | |
11038 | } | |
11039 | ||
11040 | module_ns = gfc_current_ns; | |
11041 | gcc_assert (module_ns); | |
11042 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11043 | ||
11044 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11045 | if (gfc_match (" ::") == MATCH_ERROR) | |
11046 | return MATCH_ERROR; | |
11047 | ||
11048 | /* Match the sequence of procedure names. */ | |
11049 | first = true; | |
11050 | last = false; | |
11051 | do | |
11052 | { | |
11053 | gfc_finalizer* f; | |
11054 | ||
11055 | if (first && gfc_match_eos () == MATCH_YES) | |
11056 | { | |
11057 | gfc_error ("Empty FINAL at %C"); | |
11058 | return MATCH_ERROR; | |
11059 | } | |
11060 | ||
11061 | m = gfc_match_name (name); | |
11062 | if (m == MATCH_NO) | |
11063 | { | |
11064 | gfc_error ("Expected module procedure name at %C"); | |
11065 | return MATCH_ERROR; | |
11066 | } | |
11067 | else if (m != MATCH_YES) | |
11068 | return MATCH_ERROR; | |
11069 | ||
11070 | if (gfc_match_eos () == MATCH_YES) | |
11071 | last = true; | |
11072 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11073 | { | |
a4d9b221 | 11074 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
11075 | return MATCH_ERROR; |
11076 | } | |
11077 | ||
11078 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11079 | { | |
c4100eae | 11080 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
11081 | return MATCH_ERROR; |
11082 | } | |
11083 | ||
11084 | /* Mark the symbol as module procedure. */ | |
11085 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 11086 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
11087 | return MATCH_ERROR; |
11088 | ||
11089 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 11090 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 11091 | if (f->proc_sym == sym) |
34523524 | 11092 | { |
546c8974 | 11093 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
34523524 DK |
11094 | name); |
11095 | return MATCH_ERROR; | |
11096 | } | |
11097 | ||
11098 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 11099 | gcc_assert (block->f2k_derived); |
2050626a | 11100 | sym->refs++; |
ece3f663 | 11101 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
11102 | f->proc_sym = sym; |
11103 | f->proc_tree = NULL; | |
34523524 | 11104 | f->where = gfc_current_locus; |
30b608eb DK |
11105 | f->next = block->f2k_derived->finalizers; |
11106 | block->f2k_derived->finalizers = f; | |
34523524 DK |
11107 | |
11108 | first = false; | |
11109 | } | |
11110 | while (!last); | |
11111 | ||
11112 | return MATCH_YES; | |
11113 | } | |
08a6b8e0 TB |
11114 | |
11115 | ||
11116 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
11117 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11118 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11119 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11120 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11121 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11122 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11123 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
11124 | }; |
11125 | ||
11126 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11127 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11128 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11129 | ||
11130 | TODO: We should support all GCC attributes using the same syntax for | |
11131 | the attribute list, i.e. the list in C | |
11132 | __attributes(( attribute-list )) | |
11133 | matches then | |
11134 | !GCC$ ATTRIBUTES attribute-list :: | |
11135 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11136 | saved into a TREE. | |
11137 | ||
11138 | As there is absolutely no risk of confusion, we should never return | |
11139 | MATCH_NO. */ | |
11140 | match | |
11141 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 11142 | { |
08a6b8e0 TB |
11143 | symbol_attribute attr; |
11144 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11145 | unsigned id; | |
11146 | gfc_symbol *sym; | |
11147 | match m; | |
11148 | ||
11149 | gfc_clear_attr (&attr); | |
11150 | for(;;) | |
11151 | { | |
11152 | char ch; | |
11153 | ||
11154 | if (gfc_match_name (name) != MATCH_YES) | |
11155 | return MATCH_ERROR; | |
11156 | ||
11157 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11158 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11159 | break; | |
11160 | ||
11161 | if (id == EXT_ATTR_LAST) | |
11162 | { | |
11163 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11164 | return MATCH_ERROR; | |
11165 | } | |
11166 | ||
524af0d6 | 11167 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
11168 | return MATCH_ERROR; |
11169 | ||
11170 | gfc_gobble_whitespace (); | |
11171 | ch = gfc_next_ascii_char (); | |
11172 | if (ch == ':') | |
11173 | { | |
11174 | /* This is the successful exit condition for the loop. */ | |
11175 | if (gfc_next_ascii_char () == ':') | |
11176 | break; | |
11177 | } | |
11178 | ||
11179 | if (ch == ',') | |
11180 | continue; | |
11181 | ||
11182 | goto syntax; | |
11183 | } | |
11184 | ||
11185 | if (gfc_match_eos () == MATCH_YES) | |
11186 | goto syntax; | |
11187 | ||
11188 | for(;;) | |
11189 | { | |
11190 | m = gfc_match_name (name); | |
11191 | if (m != MATCH_YES) | |
11192 | return m; | |
11193 | ||
11194 | if (find_special (name, &sym, true)) | |
11195 | return MATCH_ERROR; | |
f5acf0f2 | 11196 | |
08a6b8e0 TB |
11197 | sym->attr.ext_attr |= attr.ext_attr; |
11198 | ||
11199 | if (gfc_match_eos () == MATCH_YES) | |
11200 | break; | |
11201 | ||
11202 | if (gfc_match_char (',') != MATCH_YES) | |
11203 | goto syntax; | |
11204 | } | |
11205 | ||
11206 | return MATCH_YES; | |
11207 | ||
11208 | syntax: | |
11209 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11210 | return MATCH_ERROR; | |
11211 | } | |
170a8bd6 EB |
11212 | |
11213 | ||
11214 | /* Match a !GCC$ UNROLL statement of the form: | |
11215 | !GCC$ UNROLL n | |
11216 | ||
11217 | The parameter n is the number of times we are supposed to unroll. | |
11218 | ||
11219 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11220 | match | |
11221 | gfc_match_gcc_unroll (void) | |
11222 | { | |
11223 | int value; | |
11224 | ||
11225 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11226 | { | |
11227 | if (value < 0 || value > USHRT_MAX) | |
11228 | { | |
11229 | gfc_error ("%<GCC unroll%> directive requires a" | |
11230 | " non-negative integral constant" | |
11231 | " less than or equal to %u at %C", | |
11232 | USHRT_MAX | |
11233 | ); | |
11234 | return MATCH_ERROR; | |
11235 | } | |
11236 | if (gfc_match_eos () == MATCH_YES) | |
11237 | { | |
11238 | directive_unroll = value == 0 ? 1 : value; | |
11239 | return MATCH_YES; | |
11240 | } | |
11241 | } | |
11242 | ||
11243 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11244 | return MATCH_ERROR; | |
11245 | } |