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d15bac21 | 1 | /* Implementation of Fortran 2003 Polymorphism. |
d1e082c2 | 2 | Copyright (C) 2009-2013 Free Software Foundation, Inc. |
4fa02692 JW |
3 | Contributed by Paul Richard Thomas <pault@gcc.gnu.org> |
4 | and Janus Weil <janus@gcc.gnu.org> | |
d15bac21 JW |
5 | |
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | ||
23 | /* class.c -- This file contains the front end functions needed to service | |
24 | the implementation of Fortran 2003 polymorphism and other | |
25 | object-oriented features. */ | |
26 | ||
27 | ||
28 | /* Outline of the internal representation: | |
29 | ||
30 | Each CLASS variable is encapsulated by a class container, which is a | |
31 | structure with two fields: | |
b04533af | 32 | * _data: A pointer to the actual data of the variable. This field has the |
d15bac21 JW |
33 | declared type of the class variable and its attributes |
34 | (pointer/allocatable/dimension/...). | |
b04533af | 35 | * _vptr: A pointer to the vtable entry (see below) of the dynamic type. |
8e54f139 | 36 | |
d15bac21 JW |
37 | For each derived type we set up a "vtable" entry, i.e. a structure with the |
38 | following fields: | |
b04533af JW |
39 | * _hash: A hash value serving as a unique identifier for this type. |
40 | * _size: The size in bytes of the derived type. | |
41 | * _extends: A pointer to the vtable entry of the parent derived type. | |
42 | * _def_init: A pointer to a default initialized variable of this type. | |
43 | * _copy: A procedure pointer to a copying procedure. | |
8e54f139 TB |
44 | * _final: A procedure pointer to a wrapper function, which frees |
45 | allocatable components and calls FINAL subroutines. | |
46 | ||
611c64f0 JW |
47 | After these follow procedure pointer components for the specific |
48 | type-bound procedures. */ | |
d15bac21 JW |
49 | |
50 | ||
51 | #include "config.h" | |
52 | #include "system.h" | |
953bee7c | 53 | #include "coretypes.h" |
d15bac21 JW |
54 | #include "gfortran.h" |
55 | #include "constructor.h" | |
56 | ||
37da591f MM |
57 | /* Inserts a derived type component reference in a data reference chain. |
58 | TS: base type of the ref chain so far, in which we will pick the component | |
59 | REF: the address of the GFC_REF pointer to update | |
60 | NAME: name of the component to insert | |
61 | Note that component insertion makes sense only if we are at the end of | |
62 | the chain (*REF == NULL) or if we are adding a missing "_data" component | |
63 | to access the actual contents of a class object. */ | |
64 | ||
65 | static void | |
66 | insert_component_ref (gfc_typespec *ts, gfc_ref **ref, const char * const name) | |
67 | { | |
68 | gfc_symbol *type_sym; | |
69 | gfc_ref *new_ref; | |
70 | ||
71 | gcc_assert (ts->type == BT_DERIVED || ts->type == BT_CLASS); | |
72 | type_sym = ts->u.derived; | |
73 | ||
74 | new_ref = gfc_get_ref (); | |
75 | new_ref->type = REF_COMPONENT; | |
76 | new_ref->next = *ref; | |
77 | new_ref->u.c.sym = type_sym; | |
78 | new_ref->u.c.component = gfc_find_component (type_sym, name, true, true); | |
79 | gcc_assert (new_ref->u.c.component); | |
80 | ||
81 | if (new_ref->next) | |
82 | { | |
83 | gfc_ref *next = NULL; | |
84 | ||
85 | /* We need to update the base type in the trailing reference chain to | |
86 | that of the new component. */ | |
87 | ||
88 | gcc_assert (strcmp (name, "_data") == 0); | |
89 | ||
90 | if (new_ref->next->type == REF_COMPONENT) | |
91 | next = new_ref->next; | |
92 | else if (new_ref->next->type == REF_ARRAY | |
93 | && new_ref->next->next | |
94 | && new_ref->next->next->type == REF_COMPONENT) | |
95 | next = new_ref->next->next; | |
96 | ||
97 | if (next != NULL) | |
98 | { | |
99 | gcc_assert (new_ref->u.c.component->ts.type == BT_CLASS | |
100 | || new_ref->u.c.component->ts.type == BT_DERIVED); | |
101 | next->u.c.sym = new_ref->u.c.component->ts.u.derived; | |
102 | } | |
103 | } | |
104 | ||
105 | *ref = new_ref; | |
106 | } | |
107 | ||
108 | ||
109 | /* Tells whether we need to add a "_data" reference to access REF subobject | |
110 | from an object of type TS. If FIRST_REF_IN_CHAIN is set, then the base | |
111 | object accessed by REF is a variable; in other words it is a full object, | |
112 | not a subobject. */ | |
113 | ||
114 | static bool | |
115 | class_data_ref_missing (gfc_typespec *ts, gfc_ref *ref, bool first_ref_in_chain) | |
116 | { | |
117 | /* Only class containers may need the "_data" reference. */ | |
118 | if (ts->type != BT_CLASS) | |
119 | return false; | |
120 | ||
121 | /* Accessing a class container with an array reference is certainly wrong. */ | |
122 | if (ref->type != REF_COMPONENT) | |
123 | return true; | |
124 | ||
125 | /* Accessing the class container's fields is fine. */ | |
126 | if (ref->u.c.component->name[0] == '_') | |
127 | return false; | |
128 | ||
129 | /* At this point we have a class container with a non class container's field | |
130 | component reference. We don't want to add the "_data" component if we are | |
131 | at the first reference and the symbol's type is an extended derived type. | |
132 | In that case, conv_parent_component_references will do the right thing so | |
133 | it is not absolutely necessary. Omitting it prevents a regression (see | |
134 | class_41.f03) in the interface mapping mechanism. When evaluating string | |
135 | lengths depending on dummy arguments, we create a fake symbol with a type | |
136 | equal to that of the dummy type. However, because of type extension, | |
137 | the backend type (corresponding to the actual argument) can have a | |
138 | different (extended) type. Adding the "_data" component explicitly, using | |
139 | the base type, confuses the gfc_conv_component_ref code which deals with | |
140 | the extended type. */ | |
141 | if (first_ref_in_chain && ts->u.derived->attr.extension) | |
142 | return false; | |
143 | ||
144 | /* We have a class container with a non class container's field component | |
145 | reference that doesn't fall into the above. */ | |
146 | return true; | |
147 | } | |
148 | ||
149 | ||
150 | /* Browse through a data reference chain and add the missing "_data" references | |
151 | when a subobject of a class object is accessed without it. | |
152 | Note that it doesn't add the "_data" reference when the class container | |
153 | is the last element in the reference chain. */ | |
154 | ||
155 | void | |
156 | gfc_fix_class_refs (gfc_expr *e) | |
157 | { | |
158 | gfc_typespec *ts; | |
159 | gfc_ref **ref; | |
160 | ||
161 | if ((e->expr_type != EXPR_VARIABLE | |
162 | && e->expr_type != EXPR_FUNCTION) | |
163 | || (e->expr_type == EXPR_FUNCTION | |
164 | && e->value.function.isym != NULL)) | |
165 | return; | |
166 | ||
d00be3a3 SK |
167 | if (e->expr_type == EXPR_VARIABLE) |
168 | ts = &e->symtree->n.sym->ts; | |
169 | else | |
170 | { | |
171 | gfc_symbol *func; | |
172 | ||
173 | gcc_assert (e->expr_type == EXPR_FUNCTION); | |
174 | if (e->value.function.esym != NULL) | |
175 | func = e->value.function.esym; | |
176 | else | |
177 | func = e->symtree->n.sym; | |
178 | ||
179 | if (func->result != NULL) | |
180 | ts = &func->result->ts; | |
181 | else | |
182 | ts = &func->ts; | |
183 | } | |
37da591f MM |
184 | |
185 | for (ref = &e->ref; *ref != NULL; ref = &(*ref)->next) | |
186 | { | |
187 | if (class_data_ref_missing (ts, *ref, ref == &e->ref)) | |
188 | insert_component_ref (ts, ref, "_data"); | |
189 | ||
190 | if ((*ref)->type == REF_COMPONENT) | |
191 | ts = &(*ref)->u.c.component->ts; | |
192 | } | |
193 | } | |
194 | ||
195 | ||
d15bac21 | 196 | /* Insert a reference to the component of the given name. |
b04533af | 197 | Only to be used with CLASS containers and vtables. */ |
d15bac21 JW |
198 | |
199 | void | |
200 | gfc_add_component_ref (gfc_expr *e, const char *name) | |
201 | { | |
202 | gfc_ref **tail = &(e->ref); | |
203 | gfc_ref *next = NULL; | |
204 | gfc_symbol *derived = e->symtree->n.sym->ts.u.derived; | |
205 | while (*tail != NULL) | |
206 | { | |
207 | if ((*tail)->type == REF_COMPONENT) | |
c49ea23d PT |
208 | { |
209 | if (strcmp ((*tail)->u.c.component->name, "_data") == 0 | |
210 | && (*tail)->next | |
211 | && (*tail)->next->type == REF_ARRAY | |
212 | && (*tail)->next->next == NULL) | |
213 | return; | |
214 | derived = (*tail)->u.c.component->ts.u.derived; | |
215 | } | |
d15bac21 JW |
216 | if ((*tail)->type == REF_ARRAY && (*tail)->next == NULL) |
217 | break; | |
218 | tail = &((*tail)->next); | |
219 | } | |
b04533af | 220 | if (*tail != NULL && strcmp (name, "_data") == 0) |
d15bac21 JW |
221 | next = *tail; |
222 | (*tail) = gfc_get_ref(); | |
223 | (*tail)->next = next; | |
224 | (*tail)->type = REF_COMPONENT; | |
225 | (*tail)->u.c.sym = derived; | |
226 | (*tail)->u.c.component = gfc_find_component (derived, name, true, true); | |
227 | gcc_assert((*tail)->u.c.component); | |
228 | if (!next) | |
229 | e->ts = (*tail)->u.c.component->ts; | |
230 | } | |
231 | ||
232 | ||
c49ea23d PT |
233 | /* This is used to add both the _data component reference and an array |
234 | reference to class expressions. Used in translation of intrinsic | |
235 | array inquiry functions. */ | |
236 | ||
237 | void | |
238 | gfc_add_class_array_ref (gfc_expr *e) | |
239 | { | |
c62c6622 | 240 | int rank = CLASS_DATA (e)->as->rank; |
c49ea23d PT |
241 | gfc_array_spec *as = CLASS_DATA (e)->as; |
242 | gfc_ref *ref = NULL; | |
243 | gfc_add_component_ref (e, "_data"); | |
244 | e->rank = rank; | |
245 | for (ref = e->ref; ref; ref = ref->next) | |
246 | if (!ref->next) | |
247 | break; | |
248 | if (ref->type != REF_ARRAY) | |
249 | { | |
250 | ref->next = gfc_get_ref (); | |
251 | ref = ref->next; | |
252 | ref->type = REF_ARRAY; | |
253 | ref->u.ar.type = AR_FULL; | |
8b704316 | 254 | ref->u.ar.as = as; |
c49ea23d PT |
255 | } |
256 | } | |
257 | ||
258 | ||
259 | /* Unfortunately, class array expressions can appear in various conditions; | |
260 | with and without both _data component and an arrayspec. This function | |
261 | deals with that variability. The previous reference to 'ref' is to a | |
262 | class array. */ | |
263 | ||
264 | static bool | |
265 | class_array_ref_detected (gfc_ref *ref, bool *full_array) | |
266 | { | |
267 | bool no_data = false; | |
268 | bool with_data = false; | |
269 | ||
270 | /* An array reference with no _data component. */ | |
271 | if (ref && ref->type == REF_ARRAY | |
272 | && !ref->next | |
273 | && ref->u.ar.type != AR_ELEMENT) | |
274 | { | |
275 | if (full_array) | |
276 | *full_array = ref->u.ar.type == AR_FULL; | |
277 | no_data = true; | |
278 | } | |
279 | ||
280 | /* Cover cases where _data appears, with or without an array ref. */ | |
281 | if (ref && ref->type == REF_COMPONENT | |
282 | && strcmp (ref->u.c.component->name, "_data") == 0) | |
283 | { | |
284 | if (!ref->next) | |
285 | { | |
286 | with_data = true; | |
287 | if (full_array) | |
288 | *full_array = true; | |
289 | } | |
290 | else if (ref->next && ref->next->type == REF_ARRAY | |
291 | && !ref->next->next | |
292 | && ref->type == REF_COMPONENT | |
293 | && ref->next->type == REF_ARRAY | |
294 | && ref->next->u.ar.type != AR_ELEMENT) | |
295 | { | |
296 | with_data = true; | |
297 | if (full_array) | |
298 | *full_array = ref->next->u.ar.type == AR_FULL; | |
299 | } | |
300 | } | |
301 | ||
302 | return no_data || with_data; | |
303 | } | |
304 | ||
305 | ||
306 | /* Returns true if the expression contains a reference to a class | |
307 | array. Notice that class array elements return false. */ | |
308 | ||
309 | bool | |
310 | gfc_is_class_array_ref (gfc_expr *e, bool *full_array) | |
311 | { | |
312 | gfc_ref *ref; | |
313 | ||
314 | if (!e->rank) | |
315 | return false; | |
316 | ||
317 | if (full_array) | |
318 | *full_array= false; | |
319 | ||
320 | /* Is this a class array object? ie. Is the symbol of type class? */ | |
321 | if (e->symtree | |
322 | && e->symtree->n.sym->ts.type == BT_CLASS | |
323 | && CLASS_DATA (e->symtree->n.sym) | |
324 | && CLASS_DATA (e->symtree->n.sym)->attr.dimension | |
325 | && class_array_ref_detected (e->ref, full_array)) | |
326 | return true; | |
327 | ||
328 | /* Or is this a class array component reference? */ | |
329 | for (ref = e->ref; ref; ref = ref->next) | |
330 | { | |
331 | if (ref->type == REF_COMPONENT | |
332 | && ref->u.c.component->ts.type == BT_CLASS | |
333 | && CLASS_DATA (ref->u.c.component)->attr.dimension | |
334 | && class_array_ref_detected (ref->next, full_array)) | |
335 | return true; | |
336 | } | |
337 | ||
338 | return false; | |
339 | } | |
340 | ||
341 | ||
342 | /* Returns true if the expression is a reference to a class | |
343 | scalar. This function is necessary because such expressions | |
344 | can be dressed with a reference to the _data component and so | |
345 | have a type other than BT_CLASS. */ | |
346 | ||
347 | bool | |
348 | gfc_is_class_scalar_expr (gfc_expr *e) | |
349 | { | |
350 | gfc_ref *ref; | |
351 | ||
352 | if (e->rank) | |
353 | return false; | |
354 | ||
355 | /* Is this a class object? */ | |
356 | if (e->symtree | |
357 | && e->symtree->n.sym->ts.type == BT_CLASS | |
358 | && CLASS_DATA (e->symtree->n.sym) | |
359 | && !CLASS_DATA (e->symtree->n.sym)->attr.dimension | |
360 | && (e->ref == NULL | |
361 | || (strcmp (e->ref->u.c.component->name, "_data") == 0 | |
362 | && e->ref->next == NULL))) | |
363 | return true; | |
364 | ||
365 | /* Or is the final reference BT_CLASS or _data? */ | |
366 | for (ref = e->ref; ref; ref = ref->next) | |
367 | { | |
368 | if (ref->type == REF_COMPONENT | |
369 | && ref->u.c.component->ts.type == BT_CLASS | |
370 | && CLASS_DATA (ref->u.c.component) | |
371 | && !CLASS_DATA (ref->u.c.component)->attr.dimension | |
372 | && (ref->next == NULL | |
373 | || (strcmp (ref->next->u.c.component->name, "_data") == 0 | |
374 | && ref->next->next == NULL))) | |
375 | return true; | |
376 | } | |
377 | ||
378 | return false; | |
379 | } | |
380 | ||
381 | ||
5bf5fa56 MM |
382 | /* Tells whether the expression E is a reference to a (scalar) class container. |
383 | Scalar because array class containers usually have an array reference after | |
384 | them, and gfc_fix_class_refs will add the missing "_data" component reference | |
385 | in that case. */ | |
386 | ||
387 | bool | |
388 | gfc_is_class_container_ref (gfc_expr *e) | |
389 | { | |
390 | gfc_ref *ref; | |
391 | bool result; | |
392 | ||
393 | if (e->expr_type != EXPR_VARIABLE) | |
394 | return e->ts.type == BT_CLASS; | |
395 | ||
396 | if (e->symtree->n.sym->ts.type == BT_CLASS) | |
397 | result = true; | |
398 | else | |
399 | result = false; | |
400 | ||
401 | for (ref = e->ref; ref; ref = ref->next) | |
402 | { | |
403 | if (ref->type != REF_COMPONENT) | |
404 | result = false; | |
405 | else if (ref->u.c.component->ts.type == BT_CLASS) | |
8b704316 | 406 | result = true; |
5bf5fa56 MM |
407 | else |
408 | result = false; | |
409 | } | |
410 | ||
411 | return result; | |
412 | } | |
413 | ||
414 | ||
d15bac21 | 415 | /* Build a NULL initializer for CLASS pointers, |
0d87fa8c JW |
416 | initializing the _data component to NULL and |
417 | the _vptr component to the declared type. */ | |
d15bac21 JW |
418 | |
419 | gfc_expr * | |
8b704316 | 420 | gfc_class_null_initializer (gfc_typespec *ts, gfc_expr *init_expr) |
d15bac21 JW |
421 | { |
422 | gfc_expr *init; | |
423 | gfc_component *comp; | |
8b704316 PT |
424 | gfc_symbol *vtab = NULL; |
425 | bool is_unlimited_polymorphic; | |
426 | ||
427 | is_unlimited_polymorphic = ts->u.derived | |
428 | && ts->u.derived->components->ts.u.derived | |
429 | && ts->u.derived->components->ts.u.derived->attr.unlimited_polymorphic; | |
430 | ||
431 | if (is_unlimited_polymorphic && init_expr) | |
15115f7a | 432 | vtab = gfc_find_intrinsic_vtab (&ts->u.derived->components->ts); |
8b704316 PT |
433 | else |
434 | vtab = gfc_find_derived_vtab (ts->u.derived); | |
435 | ||
d15bac21 JW |
436 | init = gfc_get_structure_constructor_expr (ts->type, ts->kind, |
437 | &ts->u.derived->declared_at); | |
438 | init->ts = *ts; | |
8b704316 | 439 | |
d15bac21 JW |
440 | for (comp = ts->u.derived->components; comp; comp = comp->next) |
441 | { | |
442 | gfc_constructor *ctor = gfc_constructor_get(); | |
8b704316 PT |
443 | if (strcmp (comp->name, "_vptr") == 0 && vtab) |
444 | ctor->expr = gfc_lval_expr_from_sym (vtab); | |
0d87fa8c JW |
445 | else |
446 | ctor->expr = gfc_get_null_expr (NULL); | |
d15bac21 JW |
447 | gfc_constructor_append (&init->value.constructor, ctor); |
448 | } | |
449 | ||
450 | return init; | |
451 | } | |
452 | ||
453 | ||
b04533af JW |
454 | /* Create a unique string identifier for a derived type, composed of its name |
455 | and module name. This is used to construct unique names for the class | |
456 | containers and vtab symbols. */ | |
457 | ||
458 | static void | |
459 | get_unique_type_string (char *string, gfc_symbol *derived) | |
b52956be JW |
460 | { |
461 | char dt_name[GFC_MAX_SYMBOL_LEN+1]; | |
8b704316 | 462 | if (derived->attr.unlimited_polymorphic) |
f5acf0f2 | 463 | strcpy (dt_name, "STAR"); |
8b704316 | 464 | else |
f5acf0f2 | 465 | strcpy (dt_name, derived->name); |
b52956be | 466 | dt_name[0] = TOUPPER (dt_name[0]); |
8b704316 PT |
467 | if (derived->attr.unlimited_polymorphic) |
468 | sprintf (string, "_%s", dt_name); | |
469 | else if (derived->module) | |
b52956be | 470 | sprintf (string, "%s_%s", derived->module, dt_name); |
4fa02692 | 471 | else if (derived->ns->proc_name) |
b52956be | 472 | sprintf (string, "%s_%s", derived->ns->proc_name->name, dt_name); |
4fa02692 | 473 | else |
b52956be | 474 | sprintf (string, "_%s", dt_name); |
4fa02692 JW |
475 | } |
476 | ||
477 | ||
478 | /* A relative of 'get_unique_type_string' which makes sure the generated | |
479 | string will not be too long (replacing it by a hash string if needed). */ | |
480 | ||
481 | static void | |
482 | get_unique_hashed_string (char *string, gfc_symbol *derived) | |
483 | { | |
484 | char tmp[2*GFC_MAX_SYMBOL_LEN+2]; | |
485 | get_unique_type_string (&tmp[0], derived); | |
cb83a137 | 486 | /* If string is too long, use hash value in hex representation (allow for |
2419ff64 TB |
487 | extra decoration, cf. gfc_build_class_symbol & gfc_find_derived_vtab). |
488 | We need space to for 15 characters "__class_" + symbol name + "_%d_%da", | |
489 | where %d is the (co)rank which can be up to n = 15. */ | |
490 | if (strlen (tmp) > GFC_MAX_SYMBOL_LEN - 15) | |
4fa02692 JW |
491 | { |
492 | int h = gfc_hash_value (derived); | |
493 | sprintf (string, "%X", h); | |
494 | } | |
495 | else | |
496 | strcpy (string, tmp); | |
497 | } | |
498 | ||
499 | ||
500 | /* Assign a hash value for a derived type. The algorithm is that of SDBM. */ | |
501 | ||
502 | unsigned int | |
503 | gfc_hash_value (gfc_symbol *sym) | |
504 | { | |
505 | unsigned int hash = 0; | |
506 | char c[2*(GFC_MAX_SYMBOL_LEN+1)]; | |
507 | int i, len; | |
8b704316 | 508 | |
4fa02692 JW |
509 | get_unique_type_string (&c[0], sym); |
510 | len = strlen (c); | |
8b704316 PT |
511 | |
512 | for (i = 0; i < len; i++) | |
513 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
514 | ||
515 | /* Return the hash but take the modulus for the sake of module read, | |
516 | even though this slightly increases the chance of collision. */ | |
517 | return (hash % 100000000); | |
518 | } | |
519 | ||
520 | ||
521 | /* Assign a hash value for an intrinsic type. The algorithm is that of SDBM. */ | |
522 | ||
523 | unsigned int | |
524 | gfc_intrinsic_hash_value (gfc_typespec *ts) | |
525 | { | |
526 | unsigned int hash = 0; | |
527 | const char *c = gfc_typename (ts); | |
528 | int i, len; | |
529 | ||
530 | len = strlen (c); | |
531 | ||
4fa02692 JW |
532 | for (i = 0; i < len; i++) |
533 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
534 | ||
535 | /* Return the hash but take the modulus for the sake of module read, | |
536 | even though this slightly increases the chance of collision. */ | |
537 | return (hash % 100000000); | |
b04533af JW |
538 | } |
539 | ||
540 | ||
d15bac21 JW |
541 | /* Build a polymorphic CLASS entity, using the symbol that comes from |
542 | build_sym. A CLASS entity is represented by an encapsulating type, | |
b04533af JW |
543 | which contains the declared type as '_data' component, plus a pointer |
544 | component '_vptr' which determines the dynamic type. */ | |
d15bac21 | 545 | |
524af0d6 | 546 | bool |
d15bac21 JW |
547 | gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr, |
548 | gfc_array_spec **as, bool delayed_vtab) | |
549 | { | |
4fa02692 | 550 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; |
d15bac21 JW |
551 | gfc_symbol *fclass; |
552 | gfc_symbol *vtab; | |
553 | gfc_component *c; | |
8b704316 | 554 | gfc_namespace *ns; |
c62c6622 | 555 | int rank; |
c49ea23d | 556 | |
fc2655fb TB |
557 | gcc_assert (as); |
558 | ||
559 | if (*as && (*as)->type == AS_ASSUMED_SIZE) | |
c49ea23d PT |
560 | { |
561 | gfc_error ("Assumed size polymorphic objects or components, such " | |
562 | "as that at %C, have not yet been implemented"); | |
524af0d6 | 563 | return false; |
c49ea23d PT |
564 | } |
565 | ||
528622fd JW |
566 | if (attr->class_ok) |
567 | /* Class container has already been built. */ | |
524af0d6 | 568 | return true; |
528622fd | 569 | |
7d40e49f | 570 | attr->class_ok = attr->dummy || attr->pointer || attr->allocatable |
aa271860 | 571 | || attr->select_type_temporary || attr->associate_var; |
8b704316 | 572 | |
528622fd JW |
573 | if (!attr->class_ok) |
574 | /* We can not build the class container yet. */ | |
524af0d6 | 575 | return true; |
d15bac21 JW |
576 | |
577 | /* Determine the name of the encapsulating type. */ | |
c62c6622 | 578 | rank = !(*as) || (*as)->rank == -1 ? GFC_MAX_DIMENSIONS : (*as)->rank; |
4fa02692 | 579 | get_unique_hashed_string (tname, ts->u.derived); |
2419ff64 | 580 | if ((*as) && attr->allocatable) |
c62c6622 TB |
581 | sprintf (name, "__class_%s_%d_%da", tname, rank, (*as)->corank); |
582 | else if ((*as) && attr->pointer) | |
583 | sprintf (name, "__class_%s_%d_%dp", tname, rank, (*as)->corank); | |
2419ff64 | 584 | else if ((*as)) |
c62c6622 | 585 | sprintf (name, "__class_%s_%d_%d", tname, rank, (*as)->corank); |
d15bac21 | 586 | else if (attr->pointer) |
b04533af | 587 | sprintf (name, "__class_%s_p", tname); |
d15bac21 | 588 | else if (attr->allocatable) |
b04533af | 589 | sprintf (name, "__class_%s_a", tname); |
d15bac21 | 590 | else |
b04533af | 591 | sprintf (name, "__class_%s", tname); |
d15bac21 | 592 | |
8b704316 PT |
593 | if (ts->u.derived->attr.unlimited_polymorphic) |
594 | { | |
595 | /* Find the top-level namespace. */ | |
596 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
597 | if (!ns->parent) | |
598 | break; | |
599 | } | |
600 | else | |
601 | ns = ts->u.derived->ns; | |
602 | ||
603 | gfc_find_symbol (name, ns, 0, &fclass); | |
d15bac21 JW |
604 | if (fclass == NULL) |
605 | { | |
606 | gfc_symtree *st; | |
607 | /* If not there, create a new symbol. */ | |
8b704316 PT |
608 | fclass = gfc_new_symbol (name, ns); |
609 | st = gfc_new_symtree (&ns->sym_root, name); | |
d15bac21 JW |
610 | st->n.sym = fclass; |
611 | gfc_set_sym_referenced (fclass); | |
612 | fclass->refs++; | |
613 | fclass->ts.type = BT_UNKNOWN; | |
8b704316 | 614 | if (!ts->u.derived->attr.unlimited_polymorphic) |
94241120 | 615 | fclass->attr.abstract = ts->u.derived->attr.abstract; |
42ff605a | 616 | fclass->f2k_derived = gfc_get_namespace (NULL, 0); |
524af0d6 JB |
617 | if (!gfc_add_flavor (&fclass->attr, FL_DERIVED, NULL, |
618 | &gfc_current_locus)) | |
619 | return false; | |
d15bac21 | 620 | |
b04533af | 621 | /* Add component '_data'. */ |
524af0d6 JB |
622 | if (!gfc_add_component (fclass, "_data", &c)) |
623 | return false; | |
d15bac21 JW |
624 | c->ts = *ts; |
625 | c->ts.type = BT_DERIVED; | |
626 | c->attr.access = ACCESS_PRIVATE; | |
627 | c->ts.u.derived = ts->u.derived; | |
628 | c->attr.class_pointer = attr->pointer; | |
7d40e49f TB |
629 | c->attr.pointer = attr->pointer || (attr->dummy && !attr->allocatable) |
630 | || attr->select_type_temporary; | |
d15bac21 JW |
631 | c->attr.allocatable = attr->allocatable; |
632 | c->attr.dimension = attr->dimension; | |
633 | c->attr.codimension = attr->codimension; | |
8b704316 | 634 | c->attr.abstract = fclass->attr.abstract; |
d15bac21 JW |
635 | c->as = (*as); |
636 | c->initializer = NULL; | |
637 | ||
b04533af | 638 | /* Add component '_vptr'. */ |
524af0d6 JB |
639 | if (!gfc_add_component (fclass, "_vptr", &c)) |
640 | return false; | |
d15bac21 | 641 | c->ts.type = BT_DERIVED; |
8e54f139 TB |
642 | if (delayed_vtab |
643 | || (ts->u.derived->f2k_derived | |
644 | && ts->u.derived->f2k_derived->finalizers)) | |
d15bac21 JW |
645 | c->ts.u.derived = NULL; |
646 | else | |
647 | { | |
88ce8031 | 648 | vtab = gfc_find_derived_vtab (ts->u.derived); |
d15bac21 JW |
649 | gcc_assert (vtab); |
650 | c->ts.u.derived = vtab->ts.u.derived; | |
651 | } | |
f3f98a1e | 652 | c->attr.access = ACCESS_PRIVATE; |
d15bac21 JW |
653 | c->attr.pointer = 1; |
654 | } | |
655 | ||
8b704316 | 656 | if (!ts->u.derived->attr.unlimited_polymorphic) |
d15bac21 | 657 | { |
8b704316 PT |
658 | /* Since the extension field is 8 bit wide, we can only have |
659 | up to 255 extension levels. */ | |
660 | if (ts->u.derived->attr.extension == 255) | |
661 | { | |
662 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
663 | ts->u.derived->name, &ts->u.derived->declared_at); | |
524af0d6 | 664 | return false; |
8b704316 PT |
665 | } |
666 | ||
667 | fclass->attr.extension = ts->u.derived->attr.extension + 1; | |
668 | fclass->attr.alloc_comp = ts->u.derived->attr.alloc_comp; | |
d15bac21 | 669 | } |
8b704316 | 670 | |
d15bac21 JW |
671 | fclass->attr.is_class = 1; |
672 | ts->u.derived = fclass; | |
c49ea23d PT |
673 | attr->allocatable = attr->pointer = attr->dimension = attr->codimension = 0; |
674 | (*as) = NULL; | |
524af0d6 | 675 | return true; |
d15bac21 JW |
676 | } |
677 | ||
678 | ||
88ce8031 JW |
679 | /* Add a procedure pointer component to the vtype |
680 | to represent a specific type-bound procedure. */ | |
681 | ||
d15bac21 | 682 | static void |
88ce8031 | 683 | add_proc_comp (gfc_symbol *vtype, const char *name, gfc_typebound_proc *tb) |
d15bac21 | 684 | { |
88ce8031 | 685 | gfc_component *c; |
fd83db3d JW |
686 | |
687 | if (tb->non_overridable) | |
688 | return; | |
8b704316 | 689 | |
88ce8031 JW |
690 | c = gfc_find_component (vtype, name, true, true); |
691 | ||
692 | if (c == NULL) | |
d15bac21 | 693 | { |
88ce8031 | 694 | /* Add procedure component. */ |
524af0d6 | 695 | if (!gfc_add_component (vtype, name, &c)) |
d15bac21 | 696 | return; |
d15bac21 | 697 | |
88ce8031 JW |
698 | if (!c->tb) |
699 | c->tb = XCNEW (gfc_typebound_proc); | |
700 | *c->tb = *tb; | |
701 | c->tb->ppc = 1; | |
702 | c->attr.procedure = 1; | |
703 | c->attr.proc_pointer = 1; | |
704 | c->attr.flavor = FL_PROCEDURE; | |
705 | c->attr.access = ACCESS_PRIVATE; | |
706 | c->attr.external = 1; | |
707 | c->attr.untyped = 1; | |
708 | c->attr.if_source = IFSRC_IFBODY; | |
d15bac21 JW |
709 | } |
710 | else if (c->attr.proc_pointer && c->tb) | |
711 | { | |
88ce8031 | 712 | *c->tb = *tb; |
d15bac21 | 713 | c->tb->ppc = 1; |
1d0134b3 JW |
714 | } |
715 | ||
716 | if (tb->u.specific) | |
717 | { | |
718 | c->ts.interface = tb->u.specific->n.sym; | |
719 | if (!tb->deferred) | |
720 | c->initializer = gfc_get_variable_expr (tb->u.specific); | |
d15bac21 JW |
721 | } |
722 | } | |
723 | ||
88ce8031 JW |
724 | |
725 | /* Add all specific type-bound procedures in the symtree 'st' to a vtype. */ | |
726 | ||
d15bac21 | 727 | static void |
88ce8031 | 728 | add_procs_to_declared_vtab1 (gfc_symtree *st, gfc_symbol *vtype) |
d15bac21 | 729 | { |
d15bac21 JW |
730 | if (!st) |
731 | return; | |
732 | ||
733 | if (st->left) | |
88ce8031 | 734 | add_procs_to_declared_vtab1 (st->left, vtype); |
d15bac21 JW |
735 | |
736 | if (st->right) | |
88ce8031 | 737 | add_procs_to_declared_vtab1 (st->right, vtype); |
d15bac21 | 738 | |
8b704316 | 739 | if (st->n.tb && !st->n.tb->error |
aea18e92 | 740 | && !st->n.tb->is_generic && st->n.tb->u.specific) |
88ce8031 | 741 | add_proc_comp (vtype, st->name, st->n.tb); |
d15bac21 JW |
742 | } |
743 | ||
744 | ||
88ce8031 JW |
745 | /* Copy procedure pointers components from the parent type. */ |
746 | ||
d15bac21 | 747 | static void |
88ce8031 | 748 | copy_vtab_proc_comps (gfc_symbol *declared, gfc_symbol *vtype) |
d15bac21 | 749 | { |
88ce8031 | 750 | gfc_component *cmp; |
d15bac21 JW |
751 | gfc_symbol *vtab; |
752 | ||
88ce8031 | 753 | vtab = gfc_find_derived_vtab (declared); |
d15bac21 JW |
754 | |
755 | for (cmp = vtab->ts.u.derived->components; cmp; cmp = cmp->next) | |
756 | { | |
757 | if (gfc_find_component (vtype, cmp->name, true, true)) | |
758 | continue; | |
759 | ||
88ce8031 | 760 | add_proc_comp (vtype, cmp->name, cmp->tb); |
d15bac21 JW |
761 | } |
762 | } | |
763 | ||
d15bac21 | 764 | |
8e54f139 TB |
765 | /* Returns true if any of its nonpointer nonallocatable components or |
766 | their nonpointer nonallocatable subcomponents has a finalization | |
767 | subroutine. */ | |
768 | ||
769 | static bool | |
770 | has_finalizer_component (gfc_symbol *derived) | |
771 | { | |
772 | gfc_component *c; | |
773 | ||
774 | for (c = derived->components; c; c = c->next) | |
775 | { | |
776 | if (c->ts.type == BT_DERIVED && c->ts.u.derived->f2k_derived | |
777 | && c->ts.u.derived->f2k_derived->finalizers) | |
778 | return true; | |
779 | ||
780 | if (c->ts.type == BT_DERIVED | |
781 | && !c->attr.pointer && !c->attr.allocatable | |
782 | && has_finalizer_component (c->ts.u.derived)) | |
783 | return true; | |
784 | } | |
785 | return false; | |
786 | } | |
787 | ||
788 | ||
789 | /* Call DEALLOCATE for the passed component if it is allocatable, if it is | |
790 | neither allocatable nor a pointer but has a finalizer, call it. If it | |
bc7a2337 TB |
791 | is a nonpointer component with allocatable components or has finalizers, walk |
792 | them. Either of them is required; other nonallocatables and pointers aren't | |
8e54f139 TB |
793 | handled gracefully. |
794 | Note: If the component is allocatable, the DEALLOCATE handling takes care | |
795 | of calling the appropriate finalizers, coarray deregistering, and | |
796 | deallocation of allocatable subcomponents. */ | |
797 | ||
798 | static void | |
799 | finalize_component (gfc_expr *expr, gfc_symbol *derived, gfc_component *comp, | |
29a7d776 | 800 | gfc_symbol *stat, gfc_symbol *fini_coarray, gfc_code **code) |
8e54f139 TB |
801 | { |
802 | gfc_expr *e; | |
803 | gfc_ref *ref; | |
804 | ||
805 | if (comp->ts.type != BT_DERIVED && comp->ts.type != BT_CLASS | |
806 | && !comp->attr.allocatable) | |
807 | return; | |
808 | ||
809 | if ((comp->ts.type == BT_DERIVED && comp->attr.pointer) | |
810 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
811 | && CLASS_DATA (comp)->attr.pointer)) | |
812 | return; | |
813 | ||
814 | if (comp->ts.type == BT_DERIVED && !comp->attr.allocatable | |
815 | && (comp->ts.u.derived->f2k_derived == NULL | |
816 | || comp->ts.u.derived->f2k_derived->finalizers == NULL) | |
817 | && !has_finalizer_component (comp->ts.u.derived)) | |
818 | return; | |
819 | ||
820 | e = gfc_copy_expr (expr); | |
821 | if (!e->ref) | |
822 | e->ref = ref = gfc_get_ref (); | |
823 | else | |
824 | { | |
825 | for (ref = e->ref; ref->next; ref = ref->next) | |
826 | ; | |
827 | ref->next = gfc_get_ref (); | |
828 | ref = ref->next; | |
829 | } | |
830 | ref->type = REF_COMPONENT; | |
831 | ref->u.c.sym = derived; | |
832 | ref->u.c.component = comp; | |
833 | e->ts = comp->ts; | |
834 | ||
835 | if (comp->attr.dimension | |
836 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
837 | && CLASS_DATA (comp)->attr.dimension)) | |
838 | { | |
839 | ref->next = gfc_get_ref (); | |
840 | ref->next->type = REF_ARRAY; | |
841 | ref->next->u.ar.type = AR_FULL; | |
842 | ref->next->u.ar.dimen = 0; | |
843 | ref->next->u.ar.as = comp->ts.type == BT_CLASS ? CLASS_DATA (comp)->as | |
844 | : comp->as; | |
845 | e->rank = ref->next->u.ar.as->rank; | |
846 | } | |
847 | ||
29a7d776 | 848 | /* Call DEALLOCATE (comp, stat=ignore). */ |
8e54f139 TB |
849 | if (comp->attr.allocatable |
850 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
851 | && CLASS_DATA (comp)->attr.allocatable)) | |
852 | { | |
29a7d776 TB |
853 | gfc_code *dealloc, *block = NULL; |
854 | ||
855 | /* Add IF (fini_coarray). */ | |
856 | if (comp->attr.codimension | |
857 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
858 | && CLASS_DATA (comp)->attr.allocatable)) | |
859 | { | |
860 | block = XCNEW (gfc_code); | |
861 | if (*code) | |
862 | { | |
863 | (*code)->next = block; | |
864 | (*code) = (*code)->next; | |
865 | } | |
866 | else | |
867 | (*code) = block; | |
868 | ||
869 | block->loc = gfc_current_locus; | |
870 | block->op = EXEC_IF; | |
871 | ||
872 | block->block = XCNEW (gfc_code); | |
873 | block = block->block; | |
874 | block->loc = gfc_current_locus; | |
875 | block->op = EXEC_IF; | |
876 | block->expr1 = gfc_lval_expr_from_sym (fini_coarray); | |
877 | } | |
8e54f139 TB |
878 | |
879 | dealloc = XCNEW (gfc_code); | |
880 | dealloc->op = EXEC_DEALLOCATE; | |
881 | dealloc->loc = gfc_current_locus; | |
882 | ||
883 | dealloc->ext.alloc.list = gfc_get_alloc (); | |
884 | dealloc->ext.alloc.list->expr = e; | |
29a7d776 | 885 | dealloc->expr1 = gfc_lval_expr_from_sym (stat); |
8e54f139 | 886 | |
29a7d776 TB |
887 | if (block) |
888 | block->next = dealloc; | |
889 | else if (*code) | |
8e54f139 TB |
890 | { |
891 | (*code)->next = dealloc; | |
892 | (*code) = (*code)->next; | |
893 | } | |
894 | else | |
895 | (*code) = dealloc; | |
896 | } | |
897 | else if (comp->ts.type == BT_DERIVED | |
898 | && comp->ts.u.derived->f2k_derived | |
899 | && comp->ts.u.derived->f2k_derived->finalizers) | |
900 | { | |
901 | /* Call FINAL_WRAPPER (comp); */ | |
902 | gfc_code *final_wrap; | |
903 | gfc_symbol *vtab; | |
904 | gfc_component *c; | |
905 | ||
906 | vtab = gfc_find_derived_vtab (comp->ts.u.derived); | |
907 | for (c = vtab->ts.u.derived->components; c; c = c->next) | |
908 | if (strcmp (c->name, "_final") == 0) | |
909 | break; | |
910 | ||
911 | gcc_assert (c); | |
912 | final_wrap = XCNEW (gfc_code); | |
913 | final_wrap->op = EXEC_CALL; | |
914 | final_wrap->loc = gfc_current_locus; | |
915 | final_wrap->loc = gfc_current_locus; | |
916 | final_wrap->symtree = c->initializer->symtree; | |
917 | final_wrap->resolved_sym = c->initializer->symtree->n.sym; | |
918 | final_wrap->ext.actual = gfc_get_actual_arglist (); | |
919 | final_wrap->ext.actual->expr = e; | |
920 | ||
921 | if (*code) | |
922 | { | |
923 | (*code)->next = final_wrap; | |
924 | (*code) = (*code)->next; | |
925 | } | |
926 | else | |
927 | (*code) = final_wrap; | |
928 | } | |
929 | else | |
930 | { | |
931 | gfc_component *c; | |
932 | ||
933 | for (c = comp->ts.u.derived->components; c; c = c->next) | |
29a7d776 | 934 | finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray, code); |
fc2655fb | 935 | gfc_free_expr (e); |
8e54f139 TB |
936 | } |
937 | } | |
938 | ||
939 | ||
940 | /* Generate code equivalent to | |
941 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b | 942 | + offset, c_ptr), ptr). */ |
8e54f139 TB |
943 | |
944 | static gfc_code * | |
9e04287b TB |
945 | finalization_scalarizer (gfc_symbol *array, gfc_symbol *ptr, |
946 | gfc_expr *offset, gfc_namespace *sub_ns) | |
8e54f139 TB |
947 | { |
948 | gfc_code *block; | |
9e04287b | 949 | gfc_expr *expr, *expr2; |
8e54f139 TB |
950 | |
951 | /* C_F_POINTER(). */ | |
952 | block = XCNEW (gfc_code); | |
953 | block->op = EXEC_CALL; | |
954 | block->loc = gfc_current_locus; | |
955 | gfc_get_sym_tree ("c_f_pointer", sub_ns, &block->symtree, true); | |
956 | block->resolved_sym = block->symtree->n.sym; | |
957 | block->resolved_sym->attr.flavor = FL_PROCEDURE; | |
958 | block->resolved_sym->attr.intrinsic = 1; | |
cbde6c0f | 959 | block->resolved_sym->attr.subroutine = 1; |
8e54f139 TB |
960 | block->resolved_sym->from_intmod = INTMOD_ISO_C_BINDING; |
961 | block->resolved_sym->intmod_sym_id = ISOCBINDING_F_POINTER; | |
cbde6c0f | 962 | block->resolved_isym = gfc_intrinsic_subroutine_by_id (GFC_ISYM_C_F_POINTER); |
8e54f139 TB |
963 | gfc_commit_symbol (block->resolved_sym); |
964 | ||
965 | /* C_F_POINTER's first argument: TRANSFER ( <addr>, c_intptr_t). */ | |
966 | block->ext.actual = gfc_get_actual_arglist (); | |
967 | block->ext.actual->next = gfc_get_actual_arglist (); | |
968 | block->ext.actual->next->expr = gfc_get_int_expr (gfc_index_integer_kind, | |
969 | NULL, 0); | |
cbde6c0f | 970 | block->ext.actual->next->next = gfc_get_actual_arglist (); /* SIZE. */ |
8e54f139 TB |
971 | |
972 | /* The <addr> part: TRANSFER (C_LOC (array), c_intptr_t). */ | |
973 | ||
8e54f139 TB |
974 | /* TRANSFER's first argument: C_LOC (array). */ |
975 | expr = gfc_get_expr (); | |
976 | expr->expr_type = EXPR_FUNCTION; | |
977 | gfc_get_sym_tree ("c_loc", sub_ns, &expr->symtree, false); | |
978 | expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
979 | expr->symtree->n.sym->intmod_sym_id = ISOCBINDING_LOC; | |
980 | expr->symtree->n.sym->attr.intrinsic = 1; | |
981 | expr->symtree->n.sym->from_intmod = INTMOD_ISO_C_BINDING; | |
cbde6c0f | 982 | expr->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_C_LOC); |
8e54f139 TB |
983 | expr->value.function.actual = gfc_get_actual_arglist (); |
984 | expr->value.function.actual->expr | |
985 | = gfc_lval_expr_from_sym (array); | |
986 | expr->symtree->n.sym->result = expr->symtree->n.sym; | |
987 | gfc_commit_symbol (expr->symtree->n.sym); | |
988 | expr->ts.type = BT_INTEGER; | |
989 | expr->ts.kind = gfc_index_integer_kind; | |
6838c137 TB |
990 | |
991 | /* TRANSFER. */ | |
992 | expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_TRANSFER, "transfer", | |
cbde6c0f | 993 | gfc_current_locus, 3, expr, |
6838c137 | 994 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 995 | NULL, 0), NULL); |
6838c137 TB |
996 | expr2->ts.type = BT_INTEGER; |
997 | expr2->ts.kind = gfc_index_integer_kind; | |
8e54f139 | 998 | |
8e54f139 TB |
999 | /* <array addr> + <offset>. */ |
1000 | block->ext.actual->expr = gfc_get_expr (); | |
1001 | block->ext.actual->expr->expr_type = EXPR_OP; | |
1002 | block->ext.actual->expr->value.op.op = INTRINSIC_PLUS; | |
1003 | block->ext.actual->expr->value.op.op1 = expr2; | |
9e04287b | 1004 | block->ext.actual->expr->value.op.op2 = offset; |
8e54f139 TB |
1005 | block->ext.actual->expr->ts = expr->ts; |
1006 | ||
1007 | /* C_F_POINTER's 2nd arg: ptr -- and its absent shape=. */ | |
1008 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1009 | block->ext.actual->next->expr = gfc_lval_expr_from_sym (ptr); | |
1010 | block->ext.actual->next->next = gfc_get_actual_arglist (); | |
1011 | ||
1012 | return block; | |
1013 | } | |
1014 | ||
1015 | ||
9e04287b TB |
1016 | /* Calculates the offset to the (idx+1)th element of an array, taking the |
1017 | stride into account. It generates the code: | |
1018 | offset = 0 | |
1019 | do idx2 = 1, rank | |
1020 | offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) * strides(idx2) | |
1021 | end do | |
1022 | offset = offset * byte_stride. */ | |
1023 | ||
1024 | static gfc_code* | |
1025 | finalization_get_offset (gfc_symbol *idx, gfc_symbol *idx2, gfc_symbol *offset, | |
1026 | gfc_symbol *strides, gfc_symbol *sizes, | |
1027 | gfc_symbol *byte_stride, gfc_expr *rank, | |
1028 | gfc_code *block, gfc_namespace *sub_ns) | |
1029 | { | |
1030 | gfc_iterator *iter; | |
1031 | gfc_expr *expr, *expr2; | |
1032 | ||
1033 | /* offset = 0. */ | |
1034 | block->next = XCNEW (gfc_code); | |
1035 | block = block->next; | |
1036 | block->op = EXEC_ASSIGN; | |
1037 | block->loc = gfc_current_locus; | |
1038 | block->expr1 = gfc_lval_expr_from_sym (offset); | |
1039 | block->expr2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1040 | ||
1041 | /* Create loop. */ | |
1042 | iter = gfc_get_iterator (); | |
1043 | iter->var = gfc_lval_expr_from_sym (idx2); | |
1044 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1045 | iter->end = gfc_copy_expr (rank); | |
1046 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1047 | block->next = XCNEW (gfc_code); | |
1048 | block = block->next; | |
1049 | block->op = EXEC_DO; | |
1050 | block->loc = gfc_current_locus; | |
1051 | block->ext.iterator = iter; | |
1052 | block->block = gfc_get_code (); | |
1053 | block->block->op = EXEC_DO; | |
1054 | ||
1055 | /* Loop body: offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) | |
1056 | * strides(idx2). */ | |
1057 | ||
1058 | /* mod (idx, sizes(idx2)). */ | |
6838c137 TB |
1059 | expr = gfc_lval_expr_from_sym (sizes); |
1060 | expr->ref = gfc_get_ref (); | |
1061 | expr->ref->type = REF_ARRAY; | |
1062 | expr->ref->u.ar.as = sizes->as; | |
1063 | expr->ref->u.ar.type = AR_ELEMENT; | |
1064 | expr->ref->u.ar.dimen = 1; | |
1065 | expr->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1066 | expr->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1067 | ||
1068 | expr = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_MOD, "mod", | |
1069 | gfc_current_locus, 2, | |
1070 | gfc_lval_expr_from_sym (idx), expr); | |
9e04287b TB |
1071 | expr->ts = idx->ts; |
1072 | ||
1073 | /* (...) / sizes(idx2-1). */ | |
1074 | expr2 = gfc_get_expr (); | |
1075 | expr2->expr_type = EXPR_OP; | |
1076 | expr2->value.op.op = INTRINSIC_DIVIDE; | |
1077 | expr2->value.op.op1 = expr; | |
1078 | expr2->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1079 | expr2->value.op.op2->ref = gfc_get_ref (); | |
1080 | expr2->value.op.op2->ref->type = REF_ARRAY; | |
1081 | expr2->value.op.op2->ref->u.ar.as = sizes->as; | |
1082 | expr2->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1083 | expr2->value.op.op2->ref->u.ar.dimen = 1; | |
1084 | expr2->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1085 | expr2->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1086 | expr2->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1087 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1088 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1089 | = gfc_lval_expr_from_sym (idx2); | |
1090 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1091 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1092 | expr2->value.op.op2->ref->u.ar.start[0]->ts | |
1093 | = expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1094 | expr2->ts = idx->ts; | |
1095 | ||
1096 | /* ... * strides(idx2). */ | |
1097 | expr = gfc_get_expr (); | |
1098 | expr->expr_type = EXPR_OP; | |
1099 | expr->value.op.op = INTRINSIC_TIMES; | |
1100 | expr->value.op.op1 = expr2; | |
1101 | expr->value.op.op2 = gfc_lval_expr_from_sym (strides); | |
1102 | expr->value.op.op2->ref = gfc_get_ref (); | |
1103 | expr->value.op.op2->ref->type = REF_ARRAY; | |
1104 | expr->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1105 | expr->value.op.op2->ref->u.ar.dimen = 1; | |
1106 | expr->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1107 | expr->value.op.op2->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1108 | expr->value.op.op2->ref->u.ar.as = strides->as; | |
1109 | expr->ts = idx->ts; | |
1110 | ||
1111 | /* offset = offset + ... */ | |
1112 | block->block->next = XCNEW (gfc_code); | |
1113 | block->block->next->op = EXEC_ASSIGN; | |
1114 | block->block->next->loc = gfc_current_locus; | |
1115 | block->block->next->expr1 = gfc_lval_expr_from_sym (offset); | |
1116 | block->block->next->expr2 = gfc_get_expr (); | |
1117 | block->block->next->expr2->expr_type = EXPR_OP; | |
1118 | block->block->next->expr2->value.op.op = INTRINSIC_PLUS; | |
1119 | block->block->next->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1120 | block->block->next->expr2->value.op.op2 = expr; | |
1121 | block->block->next->expr2->ts = idx->ts; | |
1122 | ||
1123 | /* After the loop: offset = offset * byte_stride. */ | |
1124 | block->next = XCNEW (gfc_code); | |
1125 | block = block->next; | |
1126 | block->op = EXEC_ASSIGN; | |
1127 | block->loc = gfc_current_locus; | |
1128 | block->expr1 = gfc_lval_expr_from_sym (offset); | |
1129 | block->expr2 = gfc_get_expr (); | |
1130 | block->expr2->expr_type = EXPR_OP; | |
1131 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1132 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1133 | block->expr2->value.op.op2 = gfc_lval_expr_from_sym (byte_stride); | |
1134 | block->expr2->ts = block->expr2->value.op.op1->ts; | |
1135 | return block; | |
1136 | } | |
1137 | ||
1138 | ||
29a7d776 TB |
1139 | /* Insert code of the following form: |
1140 | ||
9e04287b TB |
1141 | block |
1142 | integer(c_intptr_t) :: i | |
1143 | ||
1144 | if ((byte_stride == STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1145 | && (is_contiguous || !final_rank3->attr.contiguous | |
1146 | || final_rank3->as->type != AS_ASSUMED_SHAPE)) | |
1147 | || 0 == STORAGE_SIZE (array)) then | |
1148 | call final_rank3 (array) | |
1149 | else | |
1150 | block | |
1151 | integer(c_intptr_t) :: offset, j | |
1152 | type(t) :: tmp(shape (array)) | |
1153 | ||
1154 | do i = 0, size (array)-1 | |
1155 | offset = obtain_offset(i, strides, sizes, byte_stride) | |
1156 | addr = transfer (c_loc (array), addr) + offset | |
1157 | call c_f_pointer (transfer (addr, cptr), ptr) | |
1158 | ||
1159 | addr = transfer (c_loc (tmp), addr) | |
1160 | + i * STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1161 | call c_f_pointer (transfer (addr, cptr), ptr2) | |
1162 | ptr2 = ptr | |
1163 | end do | |
1164 | call final_rank3 (tmp) | |
1165 | end block | |
1166 | end if | |
1167 | block */ | |
29a7d776 TB |
1168 | |
1169 | static void | |
1170 | finalizer_insert_packed_call (gfc_code *block, gfc_finalizer *fini, | |
9e04287b | 1171 | gfc_symbol *array, gfc_symbol *byte_stride, |
29a7d776 | 1172 | gfc_symbol *idx, gfc_symbol *ptr, |
6838c137 | 1173 | gfc_symbol *nelem, |
9e04287b TB |
1174 | gfc_symbol *strides, gfc_symbol *sizes, |
1175 | gfc_symbol *idx2, gfc_symbol *offset, | |
1176 | gfc_symbol *is_contiguous, gfc_expr *rank, | |
29a7d776 TB |
1177 | gfc_namespace *sub_ns) |
1178 | { | |
1179 | gfc_symbol *tmp_array, *ptr2; | |
9e04287b | 1180 | gfc_expr *size_expr, *offset2, *expr; |
29a7d776 TB |
1181 | gfc_namespace *ns; |
1182 | gfc_iterator *iter; | |
9e04287b | 1183 | gfc_code *block2; |
29a7d776 TB |
1184 | int i; |
1185 | ||
1186 | block->next = XCNEW (gfc_code); | |
1187 | block = block->next; | |
1188 | block->loc = gfc_current_locus; | |
1189 | block->op = EXEC_IF; | |
1190 | ||
1191 | block->block = XCNEW (gfc_code); | |
1192 | block = block->block; | |
1193 | block->loc = gfc_current_locus; | |
1194 | block->op = EXEC_IF; | |
1195 | ||
1196 | /* size_expr = STORAGE_SIZE (...) / NUMERIC_STORAGE_SIZE. */ | |
1197 | size_expr = gfc_get_expr (); | |
1198 | size_expr->where = gfc_current_locus; | |
1199 | size_expr->expr_type = EXPR_OP; | |
1200 | size_expr->value.op.op = INTRINSIC_DIVIDE; | |
1201 | ||
1202 | /* STORAGE_SIZE (array,kind=c_intptr_t). */ | |
6838c137 TB |
1203 | size_expr->value.op.op1 |
1204 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STORAGE_SIZE, | |
1205 | "storage_size", gfc_current_locus, 2, | |
cbde6c0f | 1206 | gfc_lval_expr_from_sym (array), |
6838c137 | 1207 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1208 | NULL, 0)); |
29a7d776 TB |
1209 | |
1210 | /* NUMERIC_STORAGE_SIZE. */ | |
1211 | size_expr->value.op.op2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, | |
1212 | gfc_character_storage_size); | |
1213 | size_expr->value.op.op1->ts = size_expr->value.op.op2->ts; | |
1214 | size_expr->ts = size_expr->value.op.op1->ts; | |
1215 | ||
9e04287b TB |
1216 | /* IF condition: (stride == size_expr |
1217 | && ((fini's as->ASSUMED_SIZE && !fini's attr.contiguous) | |
1218 | || is_contiguous) | |
1219 | || 0 == size_expr. */ | |
29a7d776 | 1220 | block->expr1 = gfc_get_expr (); |
29a7d776 | 1221 | block->expr1->ts.type = BT_LOGICAL; |
9e04287b | 1222 | block->expr1->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1223 | block->expr1->expr_type = EXPR_OP; |
1224 | block->expr1->where = gfc_current_locus; | |
1225 | ||
1226 | block->expr1->value.op.op = INTRINSIC_OR; | |
1227 | ||
9e04287b TB |
1228 | /* byte_stride == size_expr */ |
1229 | expr = gfc_get_expr (); | |
1230 | expr->ts.type = BT_LOGICAL; | |
1231 | expr->ts.kind = gfc_default_logical_kind; | |
1232 | expr->expr_type = EXPR_OP; | |
1233 | expr->where = gfc_current_locus; | |
1234 | expr->value.op.op = INTRINSIC_EQ; | |
1235 | expr->value.op.op1 | |
1236 | = gfc_lval_expr_from_sym (byte_stride); | |
1237 | expr->value.op.op2 = size_expr; | |
1238 | ||
cbde6c0f | 1239 | /* If strides aren't allowed (not assumed shape or CONTIGUOUS), |
9e04287b | 1240 | add is_contiguous check. */ |
cbde6c0f | 1241 | |
9e04287b TB |
1242 | if (fini->proc_tree->n.sym->formal->sym->as->type != AS_ASSUMED_SHAPE |
1243 | || fini->proc_tree->n.sym->formal->sym->attr.contiguous) | |
1244 | { | |
1245 | gfc_expr *expr2; | |
1246 | expr2 = gfc_get_expr (); | |
1247 | expr2->ts.type = BT_LOGICAL; | |
1248 | expr2->ts.kind = gfc_default_logical_kind; | |
1249 | expr2->expr_type = EXPR_OP; | |
1250 | expr2->where = gfc_current_locus; | |
1251 | expr2->value.op.op = INTRINSIC_AND; | |
1252 | expr2->value.op.op1 = expr; | |
1253 | expr2->value.op.op2 = gfc_lval_expr_from_sym (is_contiguous); | |
1254 | expr = expr2; | |
1255 | } | |
1256 | ||
1257 | block->expr1->value.op.op1 = expr; | |
29a7d776 TB |
1258 | |
1259 | /* 0 == size_expr */ | |
1260 | block->expr1->value.op.op2 = gfc_get_expr (); | |
29a7d776 | 1261 | block->expr1->value.op.op2->ts.type = BT_LOGICAL; |
9e04287b | 1262 | block->expr1->value.op.op2->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1263 | block->expr1->value.op.op2->expr_type = EXPR_OP; |
1264 | block->expr1->value.op.op2->where = gfc_current_locus; | |
1265 | block->expr1->value.op.op2->value.op.op = INTRINSIC_EQ; | |
1266 | block->expr1->value.op.op2->value.op.op1 = | |
1267 | gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1268 | block->expr1->value.op.op2->value.op.op2 = gfc_copy_expr (size_expr); | |
1269 | ||
1270 | /* IF body: call final subroutine. */ | |
1271 | block->next = XCNEW (gfc_code); | |
1272 | block->next->op = EXEC_CALL; | |
1273 | block->next->loc = gfc_current_locus; | |
1274 | block->next->symtree = fini->proc_tree; | |
1275 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1276 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1277 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
1278 | ||
1279 | /* ELSE. */ | |
1280 | ||
1281 | block->block = XCNEW (gfc_code); | |
1282 | block = block->block; | |
1283 | block->loc = gfc_current_locus; | |
1284 | block->op = EXEC_IF; | |
1285 | ||
1286 | block->next = XCNEW (gfc_code); | |
1287 | block = block->next; | |
1288 | ||
1289 | /* BLOCK ... END BLOCK. */ | |
1290 | block->op = EXEC_BLOCK; | |
1291 | block->loc = gfc_current_locus; | |
1292 | ns = gfc_build_block_ns (sub_ns); | |
1293 | block->ext.block.ns = ns; | |
1294 | block->ext.block.assoc = NULL; | |
1295 | ||
1296 | gfc_get_symbol ("ptr2", ns, &ptr2); | |
1297 | ptr2->ts.type = BT_DERIVED; | |
1298 | ptr2->ts.u.derived = array->ts.u.derived; | |
1299 | ptr2->attr.flavor = FL_VARIABLE; | |
1300 | ptr2->attr.pointer = 1; | |
1301 | ptr2->attr.artificial = 1; | |
1302 | gfc_set_sym_referenced (ptr2); | |
1303 | gfc_commit_symbol (ptr2); | |
1304 | ||
1305 | gfc_get_symbol ("tmp_array", ns, &tmp_array); | |
1306 | tmp_array->ts.type = BT_DERIVED; | |
1307 | tmp_array->ts.u.derived = array->ts.u.derived; | |
1308 | tmp_array->attr.flavor = FL_VARIABLE; | |
29a7d776 TB |
1309 | tmp_array->attr.dimension = 1; |
1310 | tmp_array->attr.artificial = 1; | |
1311 | tmp_array->as = gfc_get_array_spec(); | |
1312 | tmp_array->attr.intent = INTENT_INOUT; | |
1313 | tmp_array->as->type = AS_EXPLICIT; | |
1314 | tmp_array->as->rank = fini->proc_tree->n.sym->formal->sym->as->rank; | |
1315 | ||
1316 | for (i = 0; i < tmp_array->as->rank; i++) | |
1317 | { | |
1318 | gfc_expr *shape_expr; | |
1319 | tmp_array->as->lower[i] = gfc_get_int_expr (gfc_default_integer_kind, | |
1320 | NULL, 1); | |
cbde6c0f | 1321 | /* SIZE (array, dim=i+1, kind=gfc_index_integer_kind). */ |
6838c137 TB |
1322 | shape_expr |
1323 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1324 | gfc_current_locus, 3, | |
1325 | gfc_lval_expr_from_sym (array), | |
1326 | gfc_get_int_expr (gfc_default_integer_kind, | |
1327 | NULL, i+1), | |
1328 | gfc_get_int_expr (gfc_default_integer_kind, | |
cbde6c0f TB |
1329 | NULL, |
1330 | gfc_index_integer_kind)); | |
1331 | shape_expr->ts.kind = gfc_index_integer_kind; | |
29a7d776 TB |
1332 | tmp_array->as->upper[i] = shape_expr; |
1333 | } | |
1334 | gfc_set_sym_referenced (tmp_array); | |
1335 | gfc_commit_symbol (tmp_array); | |
1336 | ||
1337 | /* Create loop. */ | |
1338 | iter = gfc_get_iterator (); | |
1339 | iter->var = gfc_lval_expr_from_sym (idx); | |
1340 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1341 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1342 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1343 | ||
1344 | block = XCNEW (gfc_code); | |
1345 | ns->code = block; | |
1346 | block->op = EXEC_DO; | |
1347 | block->loc = gfc_current_locus; | |
1348 | block->ext.iterator = iter; | |
1349 | block->block = gfc_get_code (); | |
1350 | block->block->op = EXEC_DO; | |
1351 | ||
9e04287b TB |
1352 | /* Offset calculation for the new array: idx * size of type (in bytes). */ |
1353 | offset2 = gfc_get_expr (); | |
9e04287b TB |
1354 | offset2->expr_type = EXPR_OP; |
1355 | offset2->value.op.op = INTRINSIC_TIMES; | |
1356 | offset2->value.op.op1 = gfc_lval_expr_from_sym (idx); | |
1357 | offset2->value.op.op2 = gfc_copy_expr (size_expr); | |
1358 | offset2->ts = byte_stride->ts; | |
1359 | ||
1360 | /* Offset calculation of "array". */ | |
1361 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1362 | byte_stride, rank, block->block, sub_ns); | |
1363 | ||
29a7d776 TB |
1364 | /* Create code for |
1365 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
1366 | + idx * stride, c_ptr), ptr). */ | |
9e04287b TB |
1367 | block2->next = finalization_scalarizer (array, ptr, |
1368 | gfc_lval_expr_from_sym (offset), | |
1369 | sub_ns); | |
1370 | block2 = block2->next; | |
1371 | block2->next = finalization_scalarizer (tmp_array, ptr2, offset2, sub_ns); | |
cbde6c0f | 1372 | block2 = block2->next; |
9e04287b | 1373 | |
29a7d776 | 1374 | /* ptr2 = ptr. */ |
9e04287b | 1375 | block2->next = XCNEW (gfc_code); |
cbde6c0f TB |
1376 | block2 = block2->next; |
1377 | block2->op = EXEC_ASSIGN; | |
1378 | block2->loc = gfc_current_locus; | |
1379 | block2->expr1 = gfc_lval_expr_from_sym (ptr2); | |
1380 | block2->expr2 = gfc_lval_expr_from_sym (ptr); | |
29a7d776 | 1381 | |
9e04287b | 1382 | /* Call now the user's final subroutine. */ |
29a7d776 TB |
1383 | block->next = XCNEW (gfc_code); |
1384 | block = block->next; | |
1385 | block->op = EXEC_CALL; | |
1386 | block->loc = gfc_current_locus; | |
1387 | block->symtree = fini->proc_tree; | |
1388 | block->resolved_sym = fini->proc_tree->n.sym; | |
1389 | block->ext.actual = gfc_get_actual_arglist (); | |
1390 | block->ext.actual->expr = gfc_lval_expr_from_sym (tmp_array); | |
1391 | ||
1392 | if (fini->proc_tree->n.sym->formal->sym->attr.intent == INTENT_IN) | |
1393 | return; | |
1394 | ||
1395 | /* Copy back. */ | |
1396 | ||
1397 | /* Loop. */ | |
1398 | iter = gfc_get_iterator (); | |
1399 | iter->var = gfc_lval_expr_from_sym (idx); | |
1400 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1401 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1402 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1403 | ||
1404 | block->next = XCNEW (gfc_code); | |
1405 | block = block->next; | |
1406 | block->op = EXEC_DO; | |
1407 | block->loc = gfc_current_locus; | |
1408 | block->ext.iterator = iter; | |
1409 | block->block = gfc_get_code (); | |
1410 | block->block->op = EXEC_DO; | |
1411 | ||
9e04287b TB |
1412 | /* Offset calculation of "array". */ |
1413 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1414 | byte_stride, rank, block->block, sub_ns); | |
1415 | ||
29a7d776 TB |
1416 | /* Create code for |
1417 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
1418 | + offset, c_ptr), ptr). */ |
1419 | block2->next = finalization_scalarizer (array, ptr, | |
1420 | gfc_lval_expr_from_sym (offset), | |
1421 | sub_ns); | |
1422 | block2 = block2->next; | |
cbde6c0f TB |
1423 | block2->next = finalization_scalarizer (tmp_array, ptr2, |
1424 | gfc_copy_expr (offset2), sub_ns); | |
9e04287b TB |
1425 | block2 = block2->next; |
1426 | ||
29a7d776 | 1427 | /* ptr = ptr2. */ |
9e04287b TB |
1428 | block2->next = XCNEW (gfc_code); |
1429 | block2->next->op = EXEC_ASSIGN; | |
1430 | block2->next->loc = gfc_current_locus; | |
1431 | block2->next->expr1 = gfc_lval_expr_from_sym (ptr); | |
1432 | block2->next->expr2 = gfc_lval_expr_from_sym (ptr2); | |
29a7d776 TB |
1433 | } |
1434 | ||
1435 | ||
8e54f139 TB |
1436 | /* Generate the finalization/polymorphic freeing wrapper subroutine for the |
1437 | derived type "derived". The function first calls the approriate FINAL | |
1438 | subroutine, then it DEALLOCATEs (finalizes/frees) the allocatable | |
1439 | components (but not the inherited ones). Last, it calls the wrapper | |
1440 | subroutine of the parent. The generated wrapper procedure takes as argument | |
1441 | an assumed-rank array. | |
1442 | If neither allocatable components nor FINAL subroutines exists, the vtab | |
29a7d776 TB |
1443 | will contain a NULL pointer. |
1444 | The generated function has the form | |
1445 | _final(assumed-rank array, stride, skip_corarray) | |
1446 | where the array has to be contiguous (except of the lowest dimension). The | |
1447 | stride (in bytes) is used to allow different sizes for ancestor types by | |
1448 | skipping over the additionally added components in the scalarizer. If | |
1449 | "fini_coarray" is false, coarray components are not finalized to allow for | |
1450 | the correct semantic with intrinsic assignment. */ | |
8e54f139 TB |
1451 | |
1452 | static void | |
1453 | generate_finalization_wrapper (gfc_symbol *derived, gfc_namespace *ns, | |
1454 | const char *tname, gfc_component *vtab_final) | |
1455 | { | |
9e04287b TB |
1456 | gfc_symbol *final, *array, *fini_coarray, *byte_stride, *sizes, *strides; |
1457 | gfc_symbol *ptr = NULL, *idx, *idx2, *is_contiguous, *offset, *nelem; | |
8e54f139 TB |
1458 | gfc_component *comp; |
1459 | gfc_namespace *sub_ns; | |
9e04287b | 1460 | gfc_code *last_code, *block; |
8e54f139 TB |
1461 | char name[GFC_MAX_SYMBOL_LEN+1]; |
1462 | bool finalizable_comp = false; | |
29a7d776 | 1463 | bool expr_null_wrapper = false; |
9e04287b TB |
1464 | gfc_expr *ancestor_wrapper = NULL, *rank; |
1465 | gfc_iterator *iter; | |
8e54f139 TB |
1466 | |
1467 | /* Search for the ancestor's finalizers. */ | |
1468 | if (derived->attr.extension && derived->components | |
1469 | && (!derived->components->ts.u.derived->attr.abstract | |
1470 | || has_finalizer_component (derived))) | |
1471 | { | |
1472 | gfc_symbol *vtab; | |
1473 | gfc_component *comp; | |
1474 | ||
1475 | vtab = gfc_find_derived_vtab (derived->components->ts.u.derived); | |
1476 | for (comp = vtab->ts.u.derived->components; comp; comp = comp->next) | |
1477 | if (comp->name[0] == '_' && comp->name[1] == 'f') | |
1478 | { | |
1479 | ancestor_wrapper = comp->initializer; | |
1480 | break; | |
1481 | } | |
1482 | } | |
1483 | ||
29a7d776 TB |
1484 | /* No wrapper of the ancestor and no own FINAL subroutines and allocatable |
1485 | components: Return a NULL() expression; we defer this a bit to have have | |
1486 | an interface declaration. */ | |
8e54f139 TB |
1487 | if ((!ancestor_wrapper || ancestor_wrapper->expr_type == EXPR_NULL) |
1488 | && !derived->attr.alloc_comp | |
1489 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers) | |
1490 | && !has_finalizer_component (derived)) | |
29a7d776 TB |
1491 | expr_null_wrapper = true; |
1492 | else | |
1493 | /* Check whether there are new allocatable components. */ | |
1494 | for (comp = derived->components; comp; comp = comp->next) | |
1495 | { | |
1496 | if (comp == derived->components && derived->attr.extension | |
1497 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
8e54f139 TB |
1498 | continue; |
1499 | ||
29a7d776 TB |
1500 | if (comp->ts.type != BT_CLASS && !comp->attr.pointer |
1501 | && (comp->attr.allocatable | |
1502 | || (comp->ts.type == BT_DERIVED | |
1503 | && (comp->ts.u.derived->attr.alloc_comp | |
1504 | || has_finalizer_component (comp->ts.u.derived) | |
1505 | || (comp->ts.u.derived->f2k_derived | |
1506 | && comp->ts.u.derived->f2k_derived->finalizers))))) | |
1507 | finalizable_comp = true; | |
1508 | else if (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
1509 | && CLASS_DATA (comp)->attr.allocatable) | |
1510 | finalizable_comp = true; | |
1511 | } | |
8e54f139 TB |
1512 | |
1513 | /* If there is no new finalizer and no new allocatable, return with | |
1514 | an expr to the ancestor's one. */ | |
29a7d776 TB |
1515 | if (!expr_null_wrapper && !finalizable_comp |
1516 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers)) | |
8e54f139 | 1517 | { |
29a7d776 TB |
1518 | gcc_assert (ancestor_wrapper && ancestor_wrapper->ref == NULL |
1519 | && ancestor_wrapper->expr_type == EXPR_VARIABLE); | |
8e54f139 | 1520 | vtab_final->initializer = gfc_copy_expr (ancestor_wrapper); |
29a7d776 | 1521 | vtab_final->ts.interface = vtab_final->initializer->symtree->n.sym; |
8e54f139 TB |
1522 | return; |
1523 | } | |
1524 | ||
1525 | /* We now create a wrapper, which does the following: | |
1526 | 1. Call the suitable finalization subroutine for this type | |
1527 | 2. Loop over all noninherited allocatable components and noninherited | |
1528 | components with allocatable components and DEALLOCATE those; this will | |
1529 | take care of finalizers, coarray deregistering and allocatable | |
1530 | nested components. | |
1531 | 3. Call the ancestor's finalizer. */ | |
1532 | ||
1533 | /* Declare the wrapper function; it takes an assumed-rank array | |
29a7d776 | 1534 | and a VALUE logical as arguments. */ |
8e54f139 TB |
1535 | |
1536 | /* Set up the namespace. */ | |
1537 | sub_ns = gfc_get_namespace (ns, 0); | |
1538 | sub_ns->sibling = ns->contained; | |
29a7d776 TB |
1539 | if (!expr_null_wrapper) |
1540 | ns->contained = sub_ns; | |
8e54f139 TB |
1541 | sub_ns->resolved = 1; |
1542 | ||
1543 | /* Set up the procedure symbol. */ | |
1544 | sprintf (name, "__final_%s", tname); | |
1545 | gfc_get_symbol (name, sub_ns, &final); | |
1546 | sub_ns->proc_name = final; | |
1547 | final->attr.flavor = FL_PROCEDURE; | |
29a7d776 TB |
1548 | final->attr.function = 1; |
1549 | final->attr.pure = 0; | |
1550 | final->result = final; | |
1551 | final->ts.type = BT_INTEGER; | |
1552 | final->ts.kind = 4; | |
8e54f139 | 1553 | final->attr.artificial = 1; |
29a7d776 | 1554 | final->attr.if_source = expr_null_wrapper ? IFSRC_IFBODY : IFSRC_DECL; |
8e54f139 TB |
1555 | if (ns->proc_name->attr.flavor == FL_MODULE) |
1556 | final->module = ns->proc_name->name; | |
1557 | gfc_set_sym_referenced (final); | |
29a7d776 | 1558 | gfc_commit_symbol (final); |
8e54f139 TB |
1559 | |
1560 | /* Set up formal argument. */ | |
1561 | gfc_get_symbol ("array", sub_ns, &array); | |
1562 | array->ts.type = BT_DERIVED; | |
1563 | array->ts.u.derived = derived; | |
1564 | array->attr.flavor = FL_VARIABLE; | |
1565 | array->attr.dummy = 1; | |
1566 | array->attr.contiguous = 1; | |
1567 | array->attr.dimension = 1; | |
1568 | array->attr.artificial = 1; | |
1569 | array->as = gfc_get_array_spec(); | |
1570 | array->as->type = AS_ASSUMED_RANK; | |
1571 | array->as->rank = -1; | |
1572 | array->attr.intent = INTENT_INOUT; | |
1573 | gfc_set_sym_referenced (array); | |
1574 | final->formal = gfc_get_formal_arglist (); | |
1575 | final->formal->sym = array; | |
1576 | gfc_commit_symbol (array); | |
1577 | ||
29a7d776 | 1578 | /* Set up formal argument. */ |
9e04287b TB |
1579 | gfc_get_symbol ("byte_stride", sub_ns, &byte_stride); |
1580 | byte_stride->ts.type = BT_INTEGER; | |
1581 | byte_stride->ts.kind = gfc_index_integer_kind; | |
1582 | byte_stride->attr.flavor = FL_VARIABLE; | |
1583 | byte_stride->attr.dummy = 1; | |
1584 | byte_stride->attr.value = 1; | |
1585 | byte_stride->attr.artificial = 1; | |
1586 | gfc_set_sym_referenced (byte_stride); | |
29a7d776 | 1587 | final->formal->next = gfc_get_formal_arglist (); |
9e04287b TB |
1588 | final->formal->next->sym = byte_stride; |
1589 | gfc_commit_symbol (byte_stride); | |
29a7d776 TB |
1590 | |
1591 | /* Set up formal argument. */ | |
1592 | gfc_get_symbol ("fini_coarray", sub_ns, &fini_coarray); | |
1593 | fini_coarray->ts.type = BT_LOGICAL; | |
9e04287b | 1594 | fini_coarray->ts.kind = 1; |
29a7d776 TB |
1595 | fini_coarray->attr.flavor = FL_VARIABLE; |
1596 | fini_coarray->attr.dummy = 1; | |
1597 | fini_coarray->attr.value = 1; | |
1598 | fini_coarray->attr.artificial = 1; | |
1599 | gfc_set_sym_referenced (fini_coarray); | |
1600 | final->formal->next->next = gfc_get_formal_arglist (); | |
1601 | final->formal->next->next->sym = fini_coarray; | |
1602 | gfc_commit_symbol (fini_coarray); | |
1603 | ||
1604 | /* Return with a NULL() expression but with an interface which has | |
1605 | the formal arguments. */ | |
1606 | if (expr_null_wrapper) | |
1607 | { | |
1608 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1609 | vtab_final->ts.interface = final; | |
1610 | return; | |
1611 | } | |
1612 | ||
9e04287b TB |
1613 | /* Local variables. */ |
1614 | ||
1615 | gfc_get_symbol ("idx", sub_ns, &idx); | |
1616 | idx->ts.type = BT_INTEGER; | |
1617 | idx->ts.kind = gfc_index_integer_kind; | |
1618 | idx->attr.flavor = FL_VARIABLE; | |
1619 | idx->attr.artificial = 1; | |
1620 | gfc_set_sym_referenced (idx); | |
1621 | gfc_commit_symbol (idx); | |
1622 | ||
1623 | gfc_get_symbol ("idx2", sub_ns, &idx2); | |
1624 | idx2->ts.type = BT_INTEGER; | |
1625 | idx2->ts.kind = gfc_index_integer_kind; | |
1626 | idx2->attr.flavor = FL_VARIABLE; | |
1627 | idx2->attr.artificial = 1; | |
1628 | gfc_set_sym_referenced (idx2); | |
1629 | gfc_commit_symbol (idx2); | |
1630 | ||
1631 | gfc_get_symbol ("offset", sub_ns, &offset); | |
1632 | offset->ts.type = BT_INTEGER; | |
1633 | offset->ts.kind = gfc_index_integer_kind; | |
1634 | offset->attr.flavor = FL_VARIABLE; | |
1635 | offset->attr.artificial = 1; | |
1636 | gfc_set_sym_referenced (offset); | |
1637 | gfc_commit_symbol (offset); | |
1638 | ||
1639 | /* Create RANK expression. */ | |
6838c137 TB |
1640 | rank = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_RANK, "rank", |
1641 | gfc_current_locus, 1, | |
1642 | gfc_lval_expr_from_sym (array)); | |
9e04287b TB |
1643 | gfc_convert_type (rank, &idx->ts, 2); |
1644 | ||
1645 | /* Create is_contiguous variable. */ | |
1646 | gfc_get_symbol ("is_contiguous", sub_ns, &is_contiguous); | |
1647 | is_contiguous->ts.type = BT_LOGICAL; | |
1648 | is_contiguous->ts.kind = gfc_default_logical_kind; | |
1649 | is_contiguous->attr.flavor = FL_VARIABLE; | |
1650 | is_contiguous->attr.artificial = 1; | |
1651 | gfc_set_sym_referenced (is_contiguous); | |
1652 | gfc_commit_symbol (is_contiguous); | |
1653 | ||
1654 | /* Create "sizes(0..rank)" variable, which contains the multiplied | |
1655 | up extent of the dimensions, i.e. sizes(0) = 1, sizes(1) = extent(dim=1), | |
1656 | sizes(2) = sizes(1) * extent(dim=2) etc. */ | |
1657 | gfc_get_symbol ("sizes", sub_ns, &sizes); | |
1658 | sizes->ts.type = BT_INTEGER; | |
1659 | sizes->ts.kind = gfc_index_integer_kind; | |
1660 | sizes->attr.flavor = FL_VARIABLE; | |
1661 | sizes->attr.dimension = 1; | |
1662 | sizes->attr.artificial = 1; | |
1663 | sizes->as = gfc_get_array_spec(); | |
1664 | sizes->attr.intent = INTENT_INOUT; | |
1665 | sizes->as->type = AS_EXPLICIT; | |
1666 | sizes->as->rank = 1; | |
1667 | sizes->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1668 | sizes->as->upper[0] = gfc_copy_expr (rank); | |
1669 | gfc_set_sym_referenced (sizes); | |
1670 | gfc_commit_symbol (sizes); | |
1671 | ||
1672 | /* Create "strides(1..rank)" variable, which contains the strides per | |
1673 | dimension. */ | |
1674 | gfc_get_symbol ("strides", sub_ns, &strides); | |
1675 | strides->ts.type = BT_INTEGER; | |
1676 | strides->ts.kind = gfc_index_integer_kind; | |
1677 | strides->attr.flavor = FL_VARIABLE; | |
1678 | strides->attr.dimension = 1; | |
1679 | strides->attr.artificial = 1; | |
1680 | strides->as = gfc_get_array_spec(); | |
1681 | strides->attr.intent = INTENT_INOUT; | |
1682 | strides->as->type = AS_EXPLICIT; | |
1683 | strides->as->rank = 1; | |
1684 | strides->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1685 | strides->as->upper[0] = gfc_copy_expr (rank); | |
1686 | gfc_set_sym_referenced (strides); | |
1687 | gfc_commit_symbol (strides); | |
1688 | ||
29a7d776 TB |
1689 | |
1690 | /* Set return value to 0. */ | |
1691 | last_code = XCNEW (gfc_code); | |
1692 | last_code->op = EXEC_ASSIGN; | |
1693 | last_code->loc = gfc_current_locus; | |
1694 | last_code->expr1 = gfc_lval_expr_from_sym (final); | |
1695 | last_code->expr2 = gfc_get_int_expr (4, NULL, 0); | |
1696 | sub_ns->code = last_code; | |
1697 | ||
9e04287b TB |
1698 | /* Set: is_contiguous = .true. */ |
1699 | last_code->next = XCNEW (gfc_code); | |
1700 | last_code = last_code->next; | |
1701 | last_code->op = EXEC_ASSIGN; | |
1702 | last_code->loc = gfc_current_locus; | |
1703 | last_code->expr1 = gfc_lval_expr_from_sym (is_contiguous); | |
1704 | last_code->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1705 | &gfc_current_locus, true); | |
1706 | ||
1707 | /* Set: sizes(0) = 1. */ | |
1708 | last_code->next = XCNEW (gfc_code); | |
1709 | last_code = last_code->next; | |
1710 | last_code->op = EXEC_ASSIGN; | |
1711 | last_code->loc = gfc_current_locus; | |
1712 | last_code->expr1 = gfc_lval_expr_from_sym (sizes); | |
1713 | last_code->expr1->ref = gfc_get_ref (); | |
1714 | last_code->expr1->ref->type = REF_ARRAY; | |
1715 | last_code->expr1->ref->u.ar.type = AR_ELEMENT; | |
1716 | last_code->expr1->ref->u.ar.dimen = 1; | |
1717 | last_code->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1718 | last_code->expr1->ref->u.ar.start[0] | |
1719 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1720 | last_code->expr1->ref->u.ar.as = sizes->as; | |
1721 | last_code->expr2 = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); | |
1722 | ||
1723 | /* Create: | |
1724 | DO idx = 1, rank | |
1725 | strides(idx) = _F._stride (array, dim=idx) | |
1726 | sizes(idx) = sizes(i-1) * size(array, dim=idx, kind=index_kind) | |
524af0d6 | 1727 | if (strides (idx) /= sizes(i-1)) is_contiguous = .false. |
9e04287b TB |
1728 | END DO. */ |
1729 | ||
1730 | /* Create loop. */ | |
1731 | iter = gfc_get_iterator (); | |
1732 | iter->var = gfc_lval_expr_from_sym (idx); | |
1733 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1734 | iter->end = gfc_copy_expr (rank); | |
1735 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1736 | last_code->next = XCNEW (gfc_code); | |
1737 | last_code = last_code->next; | |
1738 | last_code->op = EXEC_DO; | |
1739 | last_code->loc = gfc_current_locus; | |
1740 | last_code->ext.iterator = iter; | |
1741 | last_code->block = gfc_get_code (); | |
1742 | last_code->block->op = EXEC_DO; | |
1743 | ||
1744 | /* strides(idx) = _F._stride(array,dim=idx). */ | |
1745 | last_code->block->next = XCNEW (gfc_code); | |
1746 | block = last_code->block->next; | |
1747 | block->op = EXEC_ASSIGN; | |
1748 | block->loc = gfc_current_locus; | |
1749 | ||
1750 | block->expr1 = gfc_lval_expr_from_sym (strides); | |
1751 | block->expr1->ref = gfc_get_ref (); | |
1752 | block->expr1->ref->type = REF_ARRAY; | |
1753 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1754 | block->expr1->ref->u.ar.dimen = 1; | |
1755 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1756 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1757 | block->expr1->ref->u.ar.as = strides->as; | |
1758 | ||
6838c137 TB |
1759 | block->expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STRIDE, "stride", |
1760 | gfc_current_locus, 2, | |
1761 | gfc_lval_expr_from_sym (array), | |
1762 | gfc_lval_expr_from_sym (idx)); | |
9e04287b TB |
1763 | |
1764 | /* sizes(idx) = sizes(idx-1) * size(array,dim=idx, kind=index_kind). */ | |
1765 | block->next = XCNEW (gfc_code); | |
1766 | block = block->next; | |
1767 | block->op = EXEC_ASSIGN; | |
1768 | block->loc = gfc_current_locus; | |
1769 | ||
1770 | /* sizes(idx) = ... */ | |
1771 | block->expr1 = gfc_lval_expr_from_sym (sizes); | |
1772 | block->expr1->ref = gfc_get_ref (); | |
1773 | block->expr1->ref->type = REF_ARRAY; | |
1774 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1775 | block->expr1->ref->u.ar.dimen = 1; | |
1776 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1777 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1778 | block->expr1->ref->u.ar.as = sizes->as; | |
1779 | ||
1780 | block->expr2 = gfc_get_expr (); | |
1781 | block->expr2->expr_type = EXPR_OP; | |
1782 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1783 | ||
1784 | /* sizes(idx-1). */ | |
1785 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); | |
1786 | block->expr2->value.op.op1->ref = gfc_get_ref (); | |
1787 | block->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1788 | block->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
1789 | block->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1790 | block->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1791 | block->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1792 | block->expr2->value.op.op1->ref->u.ar.start[0] = gfc_get_expr (); | |
1793 | block->expr2->value.op.op1->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1794 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1795 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1 | |
1796 | = gfc_lval_expr_from_sym (idx); | |
1797 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op2 | |
1798 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1799 | block->expr2->value.op.op1->ref->u.ar.start[0]->ts | |
1800 | = block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1->ts; | |
1801 | ||
1802 | /* size(array, dim=idx, kind=index_kind). */ | |
6838c137 TB |
1803 | block->expr2->value.op.op2 |
1804 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1805 | gfc_current_locus, 3, | |
1806 | gfc_lval_expr_from_sym (array), | |
1807 | gfc_lval_expr_from_sym (idx), | |
1808 | gfc_get_int_expr (gfc_index_integer_kind, | |
cbde6c0f TB |
1809 | NULL, |
1810 | gfc_index_integer_kind)); | |
1811 | block->expr2->value.op.op2->ts.kind = gfc_index_integer_kind; | |
9e04287b TB |
1812 | block->expr2->ts = idx->ts; |
1813 | ||
524af0d6 | 1814 | /* if (strides (idx) /= sizes(idx-1)) is_contiguous = .false. */ |
9e04287b TB |
1815 | block->next = XCNEW (gfc_code); |
1816 | block = block->next; | |
1817 | block->loc = gfc_current_locus; | |
1818 | block->op = EXEC_IF; | |
1819 | ||
1820 | block->block = XCNEW (gfc_code); | |
1821 | block = block->block; | |
1822 | block->loc = gfc_current_locus; | |
1823 | block->op = EXEC_IF; | |
1824 | ||
1825 | /* if condition: strides(idx) /= sizes(idx-1). */ | |
1826 | block->expr1 = gfc_get_expr (); | |
1827 | block->expr1->ts.type = BT_LOGICAL; | |
1828 | block->expr1->ts.kind = gfc_default_logical_kind; | |
1829 | block->expr1->expr_type = EXPR_OP; | |
1830 | block->expr1->where = gfc_current_locus; | |
1831 | block->expr1->value.op.op = INTRINSIC_NE; | |
1832 | ||
1833 | block->expr1->value.op.op1 = gfc_lval_expr_from_sym (strides); | |
1834 | block->expr1->value.op.op1->ref = gfc_get_ref (); | |
1835 | block->expr1->value.op.op1->ref->type = REF_ARRAY; | |
1836 | block->expr1->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1837 | block->expr1->value.op.op1->ref->u.ar.dimen = 1; | |
1838 | block->expr1->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1839 | block->expr1->value.op.op1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1840 | block->expr1->value.op.op1->ref->u.ar.as = strides->as; | |
1841 | ||
1842 | block->expr1->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1843 | block->expr1->value.op.op2->ref = gfc_get_ref (); | |
1844 | block->expr1->value.op.op2->ref->type = REF_ARRAY; | |
1845 | block->expr1->value.op.op2->ref->u.ar.as = sizes->as; | |
1846 | block->expr1->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1847 | block->expr1->value.op.op2->ref->u.ar.dimen = 1; | |
1848 | block->expr1->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1849 | block->expr1->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1850 | block->expr1->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1851 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1852 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1853 | = gfc_lval_expr_from_sym (idx); | |
1854 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1855 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1856 | block->expr1->value.op.op2->ref->u.ar.start[0]->ts | |
1857 | = block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1858 | ||
1859 | /* if body: is_contiguous = .false. */ | |
1860 | block->next = XCNEW (gfc_code); | |
1861 | block = block->next; | |
1862 | block->op = EXEC_ASSIGN; | |
1863 | block->loc = gfc_current_locus; | |
1864 | block->expr1 = gfc_lval_expr_from_sym (is_contiguous); | |
1865 | block->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1866 | &gfc_current_locus, false); | |
1867 | ||
8e54f139 TB |
1868 | /* Obtain the size (number of elements) of "array" MINUS ONE, |
1869 | which is used in the scalarization. */ | |
1870 | gfc_get_symbol ("nelem", sub_ns, &nelem); | |
1871 | nelem->ts.type = BT_INTEGER; | |
1872 | nelem->ts.kind = gfc_index_integer_kind; | |
1873 | nelem->attr.flavor = FL_VARIABLE; | |
1874 | nelem->attr.artificial = 1; | |
1875 | gfc_set_sym_referenced (nelem); | |
1876 | gfc_commit_symbol (nelem); | |
1877 | ||
9e04287b | 1878 | /* nelem = sizes (rank) - 1. */ |
29a7d776 TB |
1879 | last_code->next = XCNEW (gfc_code); |
1880 | last_code = last_code->next; | |
8e54f139 TB |
1881 | last_code->op = EXEC_ASSIGN; |
1882 | last_code->loc = gfc_current_locus; | |
1883 | ||
1884 | last_code->expr1 = gfc_lval_expr_from_sym (nelem); | |
1885 | ||
1886 | last_code->expr2 = gfc_get_expr (); | |
1887 | last_code->expr2->expr_type = EXPR_OP; | |
1888 | last_code->expr2->value.op.op = INTRINSIC_MINUS; | |
1889 | last_code->expr2->value.op.op2 | |
1890 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1891 | last_code->expr2->ts = last_code->expr2->value.op.op2->ts; | |
1892 | ||
9e04287b TB |
1893 | last_code->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1894 | last_code->expr2->value.op.op1->ref = gfc_get_ref (); | |
1895 | last_code->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1896 | last_code->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1897 | last_code->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1898 | last_code->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1899 | last_code->expr2->value.op.op1->ref->u.ar.start[0] = gfc_copy_expr (rank); | |
1900 | last_code->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
8e54f139 TB |
1901 | |
1902 | /* Call final subroutines. We now generate code like: | |
1903 | use iso_c_binding | |
1904 | integer, pointer :: ptr | |
1905 | type(c_ptr) :: cptr | |
1906 | integer(c_intptr_t) :: i, addr | |
1907 | ||
1908 | select case (rank (array)) | |
1909 | case (3) | |
29a7d776 | 1910 | ! If needed, the array is packed |
8e54f139 TB |
1911 | call final_rank3 (array) |
1912 | case default: | |
1913 | do i = 0, size (array)-1 | |
29a7d776 | 1914 | addr = transfer (c_loc (array), addr) + i * stride |
8e54f139 TB |
1915 | call c_f_pointer (transfer (addr, cptr), ptr) |
1916 | call elemental_final (ptr) | |
1917 | end do | |
1918 | end select */ | |
1919 | ||
1920 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
1921 | { | |
1922 | gfc_finalizer *fini, *fini_elem = NULL; | |
29a7d776 TB |
1923 | |
1924 | gfc_get_symbol ("ptr", sub_ns, &ptr); | |
1925 | ptr->ts.type = BT_DERIVED; | |
1926 | ptr->ts.u.derived = derived; | |
1927 | ptr->attr.flavor = FL_VARIABLE; | |
1928 | ptr->attr.pointer = 1; | |
1929 | ptr->attr.artificial = 1; | |
1930 | gfc_set_sym_referenced (ptr); | |
1931 | gfc_commit_symbol (ptr); | |
1932 | ||
8e54f139 TB |
1933 | /* SELECT CASE (RANK (array)). */ |
1934 | last_code->next = XCNEW (gfc_code); | |
1935 | last_code = last_code->next; | |
1936 | last_code->op = EXEC_SELECT; | |
1937 | last_code->loc = gfc_current_locus; | |
9e04287b TB |
1938 | last_code->expr1 = gfc_copy_expr (rank); |
1939 | block = NULL; | |
8e54f139 TB |
1940 | |
1941 | for (fini = derived->f2k_derived->finalizers; fini; fini = fini->next) | |
1942 | { | |
1943 | if (fini->proc_tree->n.sym->attr.elemental) | |
1944 | { | |
1945 | fini_elem = fini; | |
1946 | continue; | |
1947 | } | |
1948 | ||
1949 | /* CASE (fini_rank). */ | |
1950 | if (block) | |
1951 | { | |
1952 | block->block = XCNEW (gfc_code); | |
1953 | block = block->block; | |
1954 | } | |
1955 | else | |
1956 | { | |
1957 | block = XCNEW (gfc_code); | |
1958 | last_code->block = block; | |
1959 | } | |
1960 | block->loc = gfc_current_locus; | |
1961 | block->op = EXEC_SELECT; | |
1962 | block->ext.block.case_list = gfc_get_case (); | |
1963 | block->ext.block.case_list->where = gfc_current_locus; | |
1964 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
1965 | block->ext.block.case_list->low | |
1966 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, | |
1967 | fini->proc_tree->n.sym->formal->sym->as->rank); | |
1968 | else | |
1969 | block->ext.block.case_list->low | |
1970 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); | |
1971 | block->ext.block.case_list->high | |
cbde6c0f | 1972 | = gfc_copy_expr (block->ext.block.case_list->low); |
8e54f139 | 1973 | |
29a7d776 TB |
1974 | /* CALL fini_rank (array) - possibly with packing. */ |
1975 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
9e04287b | 1976 | finalizer_insert_packed_call (block, fini, array, byte_stride, |
6838c137 | 1977 | idx, ptr, nelem, strides, |
9e04287b TB |
1978 | sizes, idx2, offset, is_contiguous, |
1979 | rank, sub_ns); | |
29a7d776 TB |
1980 | else |
1981 | { | |
1982 | block->next = XCNEW (gfc_code); | |
1983 | block->next->op = EXEC_CALL; | |
1984 | block->next->loc = gfc_current_locus; | |
1985 | block->next->symtree = fini->proc_tree; | |
1986 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1987 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1988 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
1989 | } | |
8e54f139 TB |
1990 | } |
1991 | ||
1992 | /* Elemental call - scalarized. */ | |
1993 | if (fini_elem) | |
1994 | { | |
8e54f139 TB |
1995 | /* CASE DEFAULT. */ |
1996 | if (block) | |
1997 | { | |
1998 | block->block = XCNEW (gfc_code); | |
1999 | block = block->block; | |
2000 | } | |
2001 | else | |
2002 | { | |
2003 | block = XCNEW (gfc_code); | |
2004 | last_code->block = block; | |
2005 | } | |
2006 | block->loc = gfc_current_locus; | |
2007 | block->op = EXEC_SELECT; | |
2008 | block->ext.block.case_list = gfc_get_case (); | |
2009 | ||
8e54f139 TB |
2010 | /* Create loop. */ |
2011 | iter = gfc_get_iterator (); | |
2012 | iter->var = gfc_lval_expr_from_sym (idx); | |
2013 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2014 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2015 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
2016 | block->next = XCNEW (gfc_code); | |
2017 | block = block->next; | |
2018 | block->op = EXEC_DO; | |
2019 | block->loc = gfc_current_locus; | |
2020 | block->ext.iterator = iter; | |
2021 | block->block = gfc_get_code (); | |
2022 | block->block->op = EXEC_DO; | |
2023 | ||
9e04287b TB |
2024 | /* Offset calculation. */ |
2025 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2026 | byte_stride, rank, block->block, | |
2027 | sub_ns); | |
2028 | ||
8e54f139 TB |
2029 | /* Create code for |
2030 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
2031 | + offset, c_ptr), ptr). */ |
2032 | block->next | |
2033 | = finalization_scalarizer (array, ptr, | |
2034 | gfc_lval_expr_from_sym (offset), | |
2035 | sub_ns); | |
2036 | block = block->next; | |
8e54f139 TB |
2037 | |
2038 | /* CALL final_elemental (array). */ | |
2039 | block->next = XCNEW (gfc_code); | |
2040 | block = block->next; | |
2041 | block->op = EXEC_CALL; | |
2042 | block->loc = gfc_current_locus; | |
2043 | block->symtree = fini_elem->proc_tree; | |
2044 | block->resolved_sym = fini_elem->proc_sym; | |
2045 | block->ext.actual = gfc_get_actual_arglist (); | |
2046 | block->ext.actual->expr = gfc_lval_expr_from_sym (ptr); | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | /* Finalize and deallocate allocatable components. The same manual | |
2051 | scalarization is used as above. */ | |
2052 | ||
2053 | if (finalizable_comp) | |
2054 | { | |
2055 | gfc_symbol *stat; | |
2056 | gfc_code *block = NULL; | |
8e54f139 TB |
2057 | |
2058 | if (!ptr) | |
2059 | { | |
2060 | gfc_get_symbol ("ptr", sub_ns, &ptr); | |
2061 | ptr->ts.type = BT_DERIVED; | |
2062 | ptr->ts.u.derived = derived; | |
2063 | ptr->attr.flavor = FL_VARIABLE; | |
2064 | ptr->attr.pointer = 1; | |
2065 | ptr->attr.artificial = 1; | |
2066 | gfc_set_sym_referenced (ptr); | |
2067 | gfc_commit_symbol (ptr); | |
2068 | } | |
2069 | ||
2070 | gfc_get_symbol ("ignore", sub_ns, &stat); | |
2071 | stat->attr.flavor = FL_VARIABLE; | |
2072 | stat->attr.artificial = 1; | |
2073 | stat->ts.type = BT_INTEGER; | |
2074 | stat->ts.kind = gfc_default_integer_kind; | |
2075 | gfc_set_sym_referenced (stat); | |
2076 | gfc_commit_symbol (stat); | |
2077 | ||
2078 | /* Create loop. */ | |
2079 | iter = gfc_get_iterator (); | |
2080 | iter->var = gfc_lval_expr_from_sym (idx); | |
2081 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2082 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2083 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
2084 | last_code->next = XCNEW (gfc_code); | |
2085 | last_code = last_code->next; | |
2086 | last_code->op = EXEC_DO; | |
2087 | last_code->loc = gfc_current_locus; | |
2088 | last_code->ext.iterator = iter; | |
2089 | last_code->block = gfc_get_code (); | |
2090 | last_code->block->op = EXEC_DO; | |
2091 | ||
9e04287b TB |
2092 | /* Offset calculation. */ |
2093 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2094 | byte_stride, rank, last_code->block, | |
2095 | sub_ns); | |
2096 | ||
8e54f139 TB |
2097 | /* Create code for |
2098 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
29a7d776 | 2099 | + idx * stride, c_ptr), ptr). */ |
9e04287b TB |
2100 | block->next = finalization_scalarizer (array, ptr, |
2101 | gfc_lval_expr_from_sym(offset), | |
2102 | sub_ns); | |
2103 | block = block->next; | |
8e54f139 TB |
2104 | |
2105 | for (comp = derived->components; comp; comp = comp->next) | |
2106 | { | |
2107 | if (comp == derived->components && derived->attr.extension | |
2108 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2109 | continue; | |
2110 | ||
2111 | finalize_component (gfc_lval_expr_from_sym (ptr), derived, comp, | |
29a7d776 | 2112 | stat, fini_coarray, &block); |
8e54f139 TB |
2113 | if (!last_code->block->next) |
2114 | last_code->block->next = block; | |
2115 | } | |
2116 | ||
2117 | } | |
2118 | ||
2119 | /* Call the finalizer of the ancestor. */ | |
2120 | if (ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2121 | { | |
2122 | last_code->next = XCNEW (gfc_code); | |
2123 | last_code = last_code->next; | |
2124 | last_code->op = EXEC_CALL; | |
2125 | last_code->loc = gfc_current_locus; | |
2126 | last_code->symtree = ancestor_wrapper->symtree; | |
2127 | last_code->resolved_sym = ancestor_wrapper->symtree->n.sym; | |
2128 | ||
2129 | last_code->ext.actual = gfc_get_actual_arglist (); | |
2130 | last_code->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
29a7d776 | 2131 | last_code->ext.actual->next = gfc_get_actual_arglist (); |
9e04287b | 2132 | last_code->ext.actual->next->expr = gfc_lval_expr_from_sym (byte_stride); |
29a7d776 TB |
2133 | last_code->ext.actual->next->next = gfc_get_actual_arglist (); |
2134 | last_code->ext.actual->next->next->expr | |
2135 | = gfc_lval_expr_from_sym (fini_coarray); | |
8e54f139 TB |
2136 | } |
2137 | ||
9e04287b | 2138 | gfc_free_expr (rank); |
8e54f139 TB |
2139 | vtab_final->initializer = gfc_lval_expr_from_sym (final); |
2140 | vtab_final->ts.interface = final; | |
2141 | } | |
2142 | ||
2143 | ||
88ce8031 | 2144 | /* Add procedure pointers for all type-bound procedures to a vtab. */ |
d15bac21 JW |
2145 | |
2146 | static void | |
88ce8031 | 2147 | add_procs_to_declared_vtab (gfc_symbol *derived, gfc_symbol *vtype) |
d15bac21 | 2148 | { |
d15bac21 JW |
2149 | gfc_symbol* super_type; |
2150 | ||
88ce8031 | 2151 | super_type = gfc_get_derived_super_type (derived); |
d15bac21 | 2152 | |
88ce8031 | 2153 | if (super_type && (super_type != derived)) |
d15bac21 | 2154 | { |
88ce8031 JW |
2155 | /* Make sure that the PPCs appear in the same order as in the parent. */ |
2156 | copy_vtab_proc_comps (super_type, vtype); | |
1d0134b3 | 2157 | /* Only needed to get the PPC initializers right. */ |
88ce8031 JW |
2158 | add_procs_to_declared_vtab (super_type, vtype); |
2159 | } | |
d15bac21 | 2160 | |
88ce8031 JW |
2161 | if (derived->f2k_derived && derived->f2k_derived->tb_sym_root) |
2162 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_sym_root, vtype); | |
d15bac21 | 2163 | |
88ce8031 JW |
2164 | if (derived->f2k_derived && derived->f2k_derived->tb_uop_root) |
2165 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_uop_root, vtype); | |
d15bac21 JW |
2166 | } |
2167 | ||
2168 | ||
29a7d776 | 2169 | /* Find or generate the symbol for a derived type's vtab. */ |
d15bac21 JW |
2170 | |
2171 | gfc_symbol * | |
88ce8031 | 2172 | gfc_find_derived_vtab (gfc_symbol *derived) |
d15bac21 JW |
2173 | { |
2174 | gfc_namespace *ns; | |
50f30801 | 2175 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL, *def_init = NULL; |
611c64f0 | 2176 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
c49ea23d | 2177 | |
8b704316 | 2178 | /* Find the top-level namespace. */ |
e10f52d0 | 2179 | for (ns = gfc_current_ns; ns; ns = ns->parent) |
d15bac21 JW |
2180 | if (!ns->parent) |
2181 | break; | |
2182 | ||
e10f52d0 | 2183 | /* If the type is a class container, use the underlying derived type. */ |
8b704316 | 2184 | if (!derived->attr.unlimited_polymorphic && derived->attr.is_class) |
e10f52d0 | 2185 | derived = gfc_get_derived_super_type (derived); |
8b704316 | 2186 | |
d15bac21 JW |
2187 | if (ns) |
2188 | { | |
4fa02692 | 2189 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; |
29a7d776 | 2190 | |
4fa02692 | 2191 | get_unique_hashed_string (tname, derived); |
b04533af | 2192 | sprintf (name, "__vtab_%s", tname); |
611c64f0 JW |
2193 | |
2194 | /* Look for the vtab symbol in various namespaces. */ | |
2195 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
2196 | if (vtab == NULL) | |
2197 | gfc_find_symbol (name, ns, 0, &vtab); | |
2198 | if (vtab == NULL) | |
2199 | gfc_find_symbol (name, derived->ns, 0, &vtab); | |
d15bac21 JW |
2200 | |
2201 | if (vtab == NULL) | |
2202 | { | |
2203 | gfc_get_symbol (name, ns, &vtab); | |
2204 | vtab->ts.type = BT_DERIVED; | |
524af0d6 JB |
2205 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
2206 | &gfc_current_locus)) | |
e10f52d0 | 2207 | goto cleanup; |
d15bac21 | 2208 | vtab->attr.target = 1; |
95f5c775 | 2209 | vtab->attr.save = SAVE_IMPLICIT; |
d15bac21 | 2210 | vtab->attr.vtab = 1; |
f3f98a1e | 2211 | vtab->attr.access = ACCESS_PUBLIC; |
d15bac21 | 2212 | gfc_set_sym_referenced (vtab); |
b04533af | 2213 | sprintf (name, "__vtype_%s", tname); |
29a7d776 | 2214 | |
d15bac21 JW |
2215 | gfc_find_symbol (name, ns, 0, &vtype); |
2216 | if (vtype == NULL) | |
2217 | { | |
2218 | gfc_component *c; | |
2219 | gfc_symbol *parent = NULL, *parent_vtab = NULL; | |
2220 | ||
2221 | gfc_get_symbol (name, ns, &vtype); | |
524af0d6 JB |
2222 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
2223 | &gfc_current_locus)) | |
81fb8a48 | 2224 | goto cleanup; |
f3f98a1e | 2225 | vtype->attr.access = ACCESS_PUBLIC; |
611c64f0 | 2226 | vtype->attr.vtype = 1; |
d15bac21 JW |
2227 | gfc_set_sym_referenced (vtype); |
2228 | ||
b04533af | 2229 | /* Add component '_hash'. */ |
524af0d6 | 2230 | if (!gfc_add_component (vtype, "_hash", &c)) |
81fb8a48 | 2231 | goto cleanup; |
d15bac21 JW |
2232 | c->ts.type = BT_INTEGER; |
2233 | c->ts.kind = 4; | |
2234 | c->attr.access = ACCESS_PRIVATE; | |
2235 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2236 | NULL, derived->hash_value); | |
2237 | ||
b04533af | 2238 | /* Add component '_size'. */ |
524af0d6 | 2239 | if (!gfc_add_component (vtype, "_size", &c)) |
81fb8a48 | 2240 | goto cleanup; |
d15bac21 JW |
2241 | c->ts.type = BT_INTEGER; |
2242 | c->ts.kind = 4; | |
2243 | c->attr.access = ACCESS_PRIVATE; | |
2244 | /* Remember the derived type in ts.u.derived, | |
2245 | so that the correct initializer can be set later on | |
2246 | (in gfc_conv_structure). */ | |
2247 | c->ts.u.derived = derived; | |
2248 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2249 | NULL, 0); | |
2250 | ||
b04533af | 2251 | /* Add component _extends. */ |
524af0d6 | 2252 | if (!gfc_add_component (vtype, "_extends", &c)) |
81fb8a48 | 2253 | goto cleanup; |
d15bac21 JW |
2254 | c->attr.pointer = 1; |
2255 | c->attr.access = ACCESS_PRIVATE; | |
8b704316 PT |
2256 | if (!derived->attr.unlimited_polymorphic) |
2257 | parent = gfc_get_derived_super_type (derived); | |
2258 | else | |
2259 | parent = NULL; | |
2260 | ||
d15bac21 JW |
2261 | if (parent) |
2262 | { | |
88ce8031 | 2263 | parent_vtab = gfc_find_derived_vtab (parent); |
d15bac21 JW |
2264 | c->ts.type = BT_DERIVED; |
2265 | c->ts.u.derived = parent_vtab->ts.u.derived; | |
2266 | c->initializer = gfc_get_expr (); | |
2267 | c->initializer->expr_type = EXPR_VARIABLE; | |
2268 | gfc_find_sym_tree (parent_vtab->name, parent_vtab->ns, | |
2269 | 0, &c->initializer->symtree); | |
2270 | } | |
2271 | else | |
2272 | { | |
2273 | c->ts.type = BT_DERIVED; | |
2274 | c->ts.u.derived = vtype; | |
2275 | c->initializer = gfc_get_null_expr (NULL); | |
2276 | } | |
2277 | ||
8b704316 PT |
2278 | if (!derived->attr.unlimited_polymorphic |
2279 | && derived->components == NULL | |
2280 | && !derived->attr.zero_comp) | |
611c64f0 JW |
2281 | { |
2282 | /* At this point an error must have occurred. | |
2283 | Prevent further errors on the vtype components. */ | |
2284 | found_sym = vtab; | |
2285 | goto have_vtype; | |
2286 | } | |
2287 | ||
b04533af | 2288 | /* Add component _def_init. */ |
524af0d6 | 2289 | if (!gfc_add_component (vtype, "_def_init", &c)) |
50f30801 JW |
2290 | goto cleanup; |
2291 | c->attr.pointer = 1; | |
8e54f139 | 2292 | c->attr.artificial = 1; |
50f30801 JW |
2293 | c->attr.access = ACCESS_PRIVATE; |
2294 | c->ts.type = BT_DERIVED; | |
2295 | c->ts.u.derived = derived; | |
8b704316 PT |
2296 | if (derived->attr.unlimited_polymorphic |
2297 | || derived->attr.abstract) | |
611c64f0 | 2298 | c->initializer = gfc_get_null_expr (NULL); |
50f30801 JW |
2299 | else |
2300 | { | |
2301 | /* Construct default initialization variable. */ | |
b04533af | 2302 | sprintf (name, "__def_init_%s", tname); |
50f30801 JW |
2303 | gfc_get_symbol (name, ns, &def_init); |
2304 | def_init->attr.target = 1; | |
8e54f139 | 2305 | def_init->attr.artificial = 1; |
95f5c775 | 2306 | def_init->attr.save = SAVE_IMPLICIT; |
50f30801 | 2307 | def_init->attr.access = ACCESS_PUBLIC; |
22c30bc0 | 2308 | def_init->attr.flavor = FL_VARIABLE; |
50f30801 JW |
2309 | gfc_set_sym_referenced (def_init); |
2310 | def_init->ts.type = BT_DERIVED; | |
2311 | def_init->ts.u.derived = derived; | |
2312 | def_init->value = gfc_default_initializer (&def_init->ts); | |
2313 | ||
2314 | c->initializer = gfc_lval_expr_from_sym (def_init); | |
2315 | } | |
2316 | ||
b04533af | 2317 | /* Add component _copy. */ |
524af0d6 | 2318 | if (!gfc_add_component (vtype, "_copy", &c)) |
611c64f0 JW |
2319 | goto cleanup; |
2320 | c->attr.proc_pointer = 1; | |
2321 | c->attr.access = ACCESS_PRIVATE; | |
2322 | c->tb = XCNEW (gfc_typebound_proc); | |
2323 | c->tb->ppc = 1; | |
8b704316 PT |
2324 | if (derived->attr.unlimited_polymorphic |
2325 | || derived->attr.abstract) | |
611c64f0 JW |
2326 | c->initializer = gfc_get_null_expr (NULL); |
2327 | else | |
2328 | { | |
2329 | /* Set up namespace. */ | |
2330 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2331 | sub_ns->sibling = ns->contained; | |
2332 | ns->contained = sub_ns; | |
2333 | sub_ns->resolved = 1; | |
2334 | /* Set up procedure symbol. */ | |
b04533af | 2335 | sprintf (name, "__copy_%s", tname); |
611c64f0 JW |
2336 | gfc_get_symbol (name, sub_ns, ©); |
2337 | sub_ns->proc_name = copy; | |
2338 | copy->attr.flavor = FL_PROCEDURE; | |
cf651ca2 | 2339 | copy->attr.subroutine = 1; |
0b73eb81 | 2340 | copy->attr.pure = 1; |
8e54f139 | 2341 | copy->attr.artificial = 1; |
611c64f0 | 2342 | copy->attr.if_source = IFSRC_DECL; |
c49ea23d PT |
2343 | /* This is elemental so that arrays are automatically |
2344 | treated correctly by the scalarizer. */ | |
2345 | copy->attr.elemental = 1; | |
844ba455 JW |
2346 | if (ns->proc_name->attr.flavor == FL_MODULE) |
2347 | copy->module = ns->proc_name->name; | |
611c64f0 JW |
2348 | gfc_set_sym_referenced (copy); |
2349 | /* Set up formal arguments. */ | |
2350 | gfc_get_symbol ("src", sub_ns, &src); | |
2351 | src->ts.type = BT_DERIVED; | |
2352 | src->ts.u.derived = derived; | |
2353 | src->attr.flavor = FL_VARIABLE; | |
2354 | src->attr.dummy = 1; | |
8e54f139 TB |
2355 | src->attr.artificial = 1; |
2356 | src->attr.intent = INTENT_IN; | |
611c64f0 JW |
2357 | gfc_set_sym_referenced (src); |
2358 | copy->formal = gfc_get_formal_arglist (); | |
2359 | copy->formal->sym = src; | |
2360 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2361 | dst->ts.type = BT_DERIVED; | |
2362 | dst->ts.u.derived = derived; | |
2363 | dst->attr.flavor = FL_VARIABLE; | |
2364 | dst->attr.dummy = 1; | |
8e54f139 | 2365 | dst->attr.artificial = 1; |
c49ea23d | 2366 | dst->attr.intent = INTENT_OUT; |
611c64f0 JW |
2367 | gfc_set_sym_referenced (dst); |
2368 | copy->formal->next = gfc_get_formal_arglist (); | |
2369 | copy->formal->next->sym = dst; | |
2370 | /* Set up code. */ | |
2371 | sub_ns->code = gfc_get_code (); | |
2e85ae0d | 2372 | sub_ns->code->op = EXEC_INIT_ASSIGN; |
611c64f0 JW |
2373 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2374 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2375 | /* Set initializer. */ | |
2376 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2377 | c->ts.interface = copy; | |
2378 | } | |
2379 | ||
8e54f139 TB |
2380 | /* Add component _final, which contains a procedure pointer to |
2381 | a wrapper which handles both the freeing of allocatable | |
2382 | components and the calls to finalization subroutines. | |
2383 | Note: The actual wrapper function can only be generated | |
2384 | at resolution time. */ | |
d6cd8711 | 2385 | /* FIXME: Enable ABI-breaking "_final" generation. */ |
8b704316 | 2386 | if (0) |
d6cd8711 | 2387 | { |
524af0d6 | 2388 | if (!gfc_add_component (vtype, "_final", &c)) |
8e54f139 TB |
2389 | goto cleanup; |
2390 | c->attr.proc_pointer = 1; | |
2391 | c->attr.access = ACCESS_PRIVATE; | |
2392 | c->tb = XCNEW (gfc_typebound_proc); | |
2393 | c->tb->ppc = 1; | |
2394 | generate_finalization_wrapper (derived, ns, tname, c); | |
bda2b772 | 2395 | } |
8e54f139 | 2396 | |
50f30801 | 2397 | /* Add procedure pointers for type-bound procedures. */ |
8b704316 PT |
2398 | if (!derived->attr.unlimited_polymorphic) |
2399 | add_procs_to_declared_vtab (derived, vtype); | |
d6cd8711 | 2400 | } |
d15bac21 | 2401 | |
611c64f0 | 2402 | have_vtype: |
d15bac21 JW |
2403 | vtab->ts.u.derived = vtype; |
2404 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2405 | } | |
2406 | } | |
2407 | ||
81fb8a48 MM |
2408 | found_sym = vtab; |
2409 | ||
2410 | cleanup: | |
2411 | /* It is unexpected to have some symbols added at resolution or code | |
2412 | generation time. We commit the changes in order to keep a clean state. */ | |
2413 | if (found_sym) | |
e10f52d0 JW |
2414 | { |
2415 | gfc_commit_symbol (vtab); | |
2416 | if (vtype) | |
2417 | gfc_commit_symbol (vtype); | |
50f30801 JW |
2418 | if (def_init) |
2419 | gfc_commit_symbol (def_init); | |
611c64f0 JW |
2420 | if (copy) |
2421 | gfc_commit_symbol (copy); | |
2422 | if (src) | |
2423 | gfc_commit_symbol (src); | |
2424 | if (dst) | |
2425 | gfc_commit_symbol (dst); | |
e10f52d0 | 2426 | } |
81fb8a48 MM |
2427 | else |
2428 | gfc_undo_symbols (); | |
2429 | ||
2430 | return found_sym; | |
d15bac21 JW |
2431 | } |
2432 | ||
2433 | ||
86035eec TB |
2434 | /* Check if a derived type is finalizable. That is the case if it |
2435 | (1) has a FINAL subroutine or | |
2436 | (2) has a nonpointer nonallocatable component of finalizable type. | |
2437 | If it is finalizable, return an expression containing the | |
2438 | finalization wrapper. */ | |
2439 | ||
2440 | bool | |
2441 | gfc_is_finalizable (gfc_symbol *derived, gfc_expr **final_expr) | |
2442 | { | |
2443 | gfc_symbol *vtab; | |
2444 | gfc_component *c; | |
2445 | ||
2446 | /* (1) Check for FINAL subroutines. */ | |
2447 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2448 | goto yes; | |
2449 | ||
2450 | /* (2) Check for components of finalizable type. */ | |
2451 | for (c = derived->components; c; c = c->next) | |
2452 | if (c->ts.type == BT_DERIVED | |
2453 | && !c->attr.pointer && !c->attr.proc_pointer && !c->attr.allocatable | |
2454 | && gfc_is_finalizable (c->ts.u.derived, NULL)) | |
2455 | goto yes; | |
2456 | ||
2457 | return false; | |
2458 | ||
2459 | yes: | |
2460 | /* Make sure vtab is generated. */ | |
2461 | vtab = gfc_find_derived_vtab (derived); | |
2462 | if (final_expr) | |
2463 | { | |
2464 | /* Return finalizer expression. */ | |
2465 | gfc_component *final; | |
2466 | final = vtab->ts.u.derived->components->next->next->next->next->next; | |
2467 | gcc_assert (strcmp (final->name, "_final") == 0); | |
2468 | gcc_assert (final->initializer | |
2469 | && final->initializer->expr_type != EXPR_NULL); | |
2470 | *final_expr = final->initializer; | |
2471 | } | |
2472 | return true; | |
2473 | } | |
2474 | ||
2475 | ||
8b704316 PT |
2476 | /* Find (or generate) the symbol for an intrinsic type's vtab. This is |
2477 | need to support unlimited polymorphism. */ | |
2478 | ||
2479 | gfc_symbol * | |
2480 | gfc_find_intrinsic_vtab (gfc_typespec *ts) | |
2481 | { | |
2482 | gfc_namespace *ns; | |
adede54c | 2483 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL; |
8b704316 PT |
2484 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
2485 | int charlen = 0; | |
2486 | ||
2487 | if (ts->type == BT_CHARACTER && ts->deferred) | |
2488 | { | |
2489 | gfc_error ("TODO: Deferred character length variable at %C cannot " | |
2490 | "yet be associated with unlimited polymorphic entities"); | |
2491 | return NULL; | |
2492 | } | |
2493 | ||
2494 | if (ts->type == BT_UNKNOWN) | |
2495 | return NULL; | |
2496 | ||
2497 | /* Sometimes the typespec is passed from a single call. */ | |
2498 | if (ts->type == BT_DERIVED) | |
2499 | return gfc_find_derived_vtab (ts->u.derived); | |
2500 | ||
2501 | /* Find the top-level namespace. */ | |
2502 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
2503 | if (!ns->parent) | |
2504 | break; | |
2505 | ||
2506 | if (ts->type == BT_CHARACTER && ts->u.cl && ts->u.cl->length | |
2507 | && ts->u.cl->length->expr_type == EXPR_CONSTANT) | |
2508 | charlen = mpz_get_si (ts->u.cl->length->value.integer); | |
2509 | ||
2510 | if (ns) | |
2511 | { | |
2512 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; | |
2513 | ||
2514 | if (ts->type == BT_CHARACTER) | |
2515 | sprintf (tname, "%s_%d_%d", gfc_basic_typename (ts->type), | |
2516 | charlen, ts->kind); | |
2517 | else | |
2518 | sprintf (tname, "%s_%d_", gfc_basic_typename (ts->type), ts->kind); | |
2519 | ||
2520 | sprintf (name, "__vtab_%s", tname); | |
2521 | ||
2522 | /* Look for the vtab symbol in various namespaces. */ | |
2523 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
2524 | if (vtab == NULL) | |
2525 | gfc_find_symbol (name, ns, 0, &vtab); | |
2526 | ||
2527 | if (vtab == NULL) | |
2528 | { | |
2529 | gfc_get_symbol (name, ns, &vtab); | |
2530 | vtab->ts.type = BT_DERIVED; | |
524af0d6 JB |
2531 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
2532 | &gfc_current_locus)) | |
8b704316 PT |
2533 | goto cleanup; |
2534 | vtab->attr.target = 1; | |
2535 | vtab->attr.save = SAVE_IMPLICIT; | |
2536 | vtab->attr.vtab = 1; | |
2537 | vtab->attr.access = ACCESS_PUBLIC; | |
2538 | gfc_set_sym_referenced (vtab); | |
2539 | sprintf (name, "__vtype_%s", tname); | |
2540 | ||
2541 | gfc_find_symbol (name, ns, 0, &vtype); | |
2542 | if (vtype == NULL) | |
2543 | { | |
2544 | gfc_component *c; | |
2545 | int hash; | |
2546 | gfc_namespace *sub_ns; | |
2547 | gfc_namespace *contained; | |
2548 | ||
2549 | gfc_get_symbol (name, ns, &vtype); | |
524af0d6 JB |
2550 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
2551 | &gfc_current_locus)) | |
8b704316 PT |
2552 | goto cleanup; |
2553 | vtype->attr.access = ACCESS_PUBLIC; | |
2554 | vtype->attr.vtype = 1; | |
2555 | gfc_set_sym_referenced (vtype); | |
2556 | ||
2557 | /* Add component '_hash'. */ | |
524af0d6 | 2558 | if (!gfc_add_component (vtype, "_hash", &c)) |
8b704316 PT |
2559 | goto cleanup; |
2560 | c->ts.type = BT_INTEGER; | |
2561 | c->ts.kind = 4; | |
2562 | c->attr.access = ACCESS_PRIVATE; | |
2563 | hash = gfc_intrinsic_hash_value (ts); | |
2564 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2565 | NULL, hash); | |
2566 | ||
2567 | /* Add component '_size'. */ | |
524af0d6 | 2568 | if (!gfc_add_component (vtype, "_size", &c)) |
8b704316 PT |
2569 | goto cleanup; |
2570 | c->ts.type = BT_INTEGER; | |
2571 | c->ts.kind = 4; | |
2572 | c->attr.access = ACCESS_PRIVATE; | |
2573 | if (ts->type == BT_CHARACTER) | |
2574 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2575 | NULL, charlen*ts->kind); | |
2576 | else | |
2577 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2578 | NULL, ts->kind); | |
2579 | ||
2580 | /* Add component _extends. */ | |
524af0d6 | 2581 | if (!gfc_add_component (vtype, "_extends", &c)) |
8b704316 PT |
2582 | goto cleanup; |
2583 | c->attr.pointer = 1; | |
2584 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2585 | c->ts.type = BT_VOID; |
8b704316 PT |
2586 | c->initializer = gfc_get_null_expr (NULL); |
2587 | ||
2588 | /* Add component _def_init. */ | |
524af0d6 | 2589 | if (!gfc_add_component (vtype, "_def_init", &c)) |
8b704316 PT |
2590 | goto cleanup; |
2591 | c->attr.pointer = 1; | |
2592 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2593 | c->ts.type = BT_VOID; |
8b704316 PT |
2594 | c->initializer = gfc_get_null_expr (NULL); |
2595 | ||
2596 | /* Add component _copy. */ | |
524af0d6 | 2597 | if (!gfc_add_component (vtype, "_copy", &c)) |
8b704316 PT |
2598 | goto cleanup; |
2599 | c->attr.proc_pointer = 1; | |
2600 | c->attr.access = ACCESS_PRIVATE; | |
2601 | c->tb = XCNEW (gfc_typebound_proc); | |
2602 | c->tb->ppc = 1; | |
2603 | ||
2604 | /* Check to see if copy function already exists. Note | |
2605 | that this is only used for characters of different | |
2606 | lengths. */ | |
2607 | contained = ns->contained; | |
2608 | for (; contained; contained = contained->sibling) | |
2609 | if (contained->proc_name | |
2610 | && strcmp (name, contained->proc_name->name) == 0) | |
2611 | { | |
2612 | copy = contained->proc_name; | |
2613 | goto got_char_copy; | |
2614 | } | |
2615 | ||
2616 | /* Set up namespace. */ | |
2617 | sub_ns = gfc_get_namespace (ns, 0); | |
2618 | sub_ns->sibling = ns->contained; | |
2619 | ns->contained = sub_ns; | |
2620 | sub_ns->resolved = 1; | |
2621 | /* Set up procedure symbol. */ | |
2622 | if (ts->type != BT_CHARACTER) | |
2623 | sprintf (name, "__copy_%s", tname); | |
2624 | else | |
2625 | /* __copy is always the same for characters. */ | |
2626 | sprintf (name, "__copy_character_%d", ts->kind); | |
2627 | gfc_get_symbol (name, sub_ns, ©); | |
2628 | sub_ns->proc_name = copy; | |
2629 | copy->attr.flavor = FL_PROCEDURE; | |
2630 | copy->attr.subroutine = 1; | |
2631 | copy->attr.pure = 1; | |
2632 | copy->attr.if_source = IFSRC_DECL; | |
2633 | /* This is elemental so that arrays are automatically | |
2634 | treated correctly by the scalarizer. */ | |
2635 | copy->attr.elemental = 1; | |
2636 | if (ns->proc_name->attr.flavor == FL_MODULE) | |
2637 | copy->module = ns->proc_name->name; | |
2638 | gfc_set_sym_referenced (copy); | |
2639 | /* Set up formal arguments. */ | |
2640 | gfc_get_symbol ("src", sub_ns, &src); | |
2641 | src->ts.type = ts->type; | |
2642 | src->ts.kind = ts->kind; | |
2643 | src->attr.flavor = FL_VARIABLE; | |
2644 | src->attr.dummy = 1; | |
2645 | src->attr.intent = INTENT_IN; | |
2646 | gfc_set_sym_referenced (src); | |
2647 | copy->formal = gfc_get_formal_arglist (); | |
2648 | copy->formal->sym = src; | |
2649 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2650 | dst->ts.type = ts->type; | |
2651 | dst->ts.kind = ts->kind; | |
2652 | dst->attr.flavor = FL_VARIABLE; | |
2653 | dst->attr.dummy = 1; | |
2654 | dst->attr.intent = INTENT_OUT; | |
2655 | gfc_set_sym_referenced (dst); | |
2656 | copy->formal->next = gfc_get_formal_arglist (); | |
2657 | copy->formal->next->sym = dst; | |
2658 | /* Set up code. */ | |
2659 | sub_ns->code = gfc_get_code (); | |
2660 | sub_ns->code->op = EXEC_INIT_ASSIGN; | |
2661 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); | |
2662 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2663 | got_char_copy: | |
2664 | /* Set initializer. */ | |
2665 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2666 | c->ts.interface = copy; | |
94241120 TB |
2667 | |
2668 | /* Add component _final. */ | |
524af0d6 | 2669 | if (!gfc_add_component (vtype, "_final", &c)) |
94241120 TB |
2670 | goto cleanup; |
2671 | c->attr.proc_pointer = 1; | |
2672 | c->attr.access = ACCESS_PRIVATE; | |
2673 | c->tb = XCNEW (gfc_typebound_proc); | |
2674 | c->tb->ppc = 1; | |
2675 | c->initializer = gfc_get_null_expr (NULL); | |
8b704316 PT |
2676 | } |
2677 | vtab->ts.u.derived = vtype; | |
2678 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2679 | } | |
2680 | } | |
2681 | ||
2682 | found_sym = vtab; | |
2683 | ||
2684 | cleanup: | |
2685 | /* It is unexpected to have some symbols added at resolution or code | |
2686 | generation time. We commit the changes in order to keep a clean state. */ | |
2687 | if (found_sym) | |
2688 | { | |
2689 | gfc_commit_symbol (vtab); | |
2690 | if (vtype) | |
2691 | gfc_commit_symbol (vtype); | |
8b704316 PT |
2692 | if (copy) |
2693 | gfc_commit_symbol (copy); | |
2694 | if (src) | |
2695 | gfc_commit_symbol (src); | |
2696 | if (dst) | |
2697 | gfc_commit_symbol (dst); | |
2698 | } | |
2699 | else | |
2700 | gfc_undo_symbols (); | |
2701 | ||
2702 | return found_sym; | |
2703 | } | |
2704 | ||
2705 | ||
d15bac21 JW |
2706 | /* General worker function to find either a type-bound procedure or a |
2707 | type-bound user operator. */ | |
2708 | ||
2709 | static gfc_symtree* | |
524af0d6 | 2710 | find_typebound_proc_uop (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2711 | const char* name, bool noaccess, bool uop, |
2712 | locus* where) | |
2713 | { | |
2714 | gfc_symtree* res; | |
2715 | gfc_symtree* root; | |
2716 | ||
d15bac21 JW |
2717 | /* Set default to failure. */ |
2718 | if (t) | |
524af0d6 | 2719 | *t = false; |
d15bac21 | 2720 | |
9b940c6d JW |
2721 | if (derived->f2k_derived) |
2722 | /* Set correct symbol-root. */ | |
2723 | root = (uop ? derived->f2k_derived->tb_uop_root | |
2724 | : derived->f2k_derived->tb_sym_root); | |
2725 | else | |
2726 | return NULL; | |
2727 | ||
d15bac21 JW |
2728 | /* Try to find it in the current type's namespace. */ |
2729 | res = gfc_find_symtree (root, name); | |
2730 | if (res && res->n.tb && !res->n.tb->error) | |
2731 | { | |
2732 | /* We found one. */ | |
2733 | if (t) | |
524af0d6 | 2734 | *t = true; |
d15bac21 JW |
2735 | |
2736 | if (!noaccess && derived->attr.use_assoc | |
2737 | && res->n.tb->access == ACCESS_PRIVATE) | |
2738 | { | |
2739 | if (where) | |
2740 | gfc_error ("'%s' of '%s' is PRIVATE at %L", | |
2741 | name, derived->name, where); | |
2742 | if (t) | |
524af0d6 | 2743 | *t = false; |
d15bac21 JW |
2744 | } |
2745 | ||
2746 | return res; | |
2747 | } | |
2748 | ||
2749 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2750 | if (derived->attr.extension) | |
2751 | { | |
2752 | gfc_symbol* super_type; | |
2753 | super_type = gfc_get_derived_super_type (derived); | |
2754 | gcc_assert (super_type); | |
2755 | ||
2756 | return find_typebound_proc_uop (super_type, t, name, | |
2757 | noaccess, uop, where); | |
2758 | } | |
2759 | ||
2760 | /* Nothing found. */ | |
2761 | return NULL; | |
2762 | } | |
2763 | ||
2764 | ||
2765 | /* Find a type-bound procedure or user operator by name for a derived-type | |
2766 | (looking recursively through the super-types). */ | |
2767 | ||
2768 | gfc_symtree* | |
524af0d6 | 2769 | gfc_find_typebound_proc (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2770 | const char* name, bool noaccess, locus* where) |
2771 | { | |
2772 | return find_typebound_proc_uop (derived, t, name, noaccess, false, where); | |
2773 | } | |
2774 | ||
2775 | gfc_symtree* | |
524af0d6 | 2776 | gfc_find_typebound_user_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2777 | const char* name, bool noaccess, locus* where) |
2778 | { | |
2779 | return find_typebound_proc_uop (derived, t, name, noaccess, true, where); | |
2780 | } | |
2781 | ||
2782 | ||
2783 | /* Find a type-bound intrinsic operator looking recursively through the | |
2784 | super-type hierarchy. */ | |
2785 | ||
2786 | gfc_typebound_proc* | |
524af0d6 | 2787 | gfc_find_typebound_intrinsic_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2788 | gfc_intrinsic_op op, bool noaccess, |
2789 | locus* where) | |
2790 | { | |
2791 | gfc_typebound_proc* res; | |
2792 | ||
2793 | /* Set default to failure. */ | |
2794 | if (t) | |
524af0d6 | 2795 | *t = false; |
d15bac21 JW |
2796 | |
2797 | /* Try to find it in the current type's namespace. */ | |
2798 | if (derived->f2k_derived) | |
2799 | res = derived->f2k_derived->tb_op[op]; | |
8b704316 | 2800 | else |
d15bac21 JW |
2801 | res = NULL; |
2802 | ||
2803 | /* Check access. */ | |
2804 | if (res && !res->error) | |
2805 | { | |
2806 | /* We found one. */ | |
2807 | if (t) | |
524af0d6 | 2808 | *t = true; |
d15bac21 JW |
2809 | |
2810 | if (!noaccess && derived->attr.use_assoc | |
2811 | && res->access == ACCESS_PRIVATE) | |
2812 | { | |
2813 | if (where) | |
2814 | gfc_error ("'%s' of '%s' is PRIVATE at %L", | |
2815 | gfc_op2string (op), derived->name, where); | |
2816 | if (t) | |
524af0d6 | 2817 | *t = false; |
d15bac21 JW |
2818 | } |
2819 | ||
2820 | return res; | |
2821 | } | |
2822 | ||
2823 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2824 | if (derived->attr.extension) | |
2825 | { | |
2826 | gfc_symbol* super_type; | |
2827 | super_type = gfc_get_derived_super_type (derived); | |
2828 | gcc_assert (super_type); | |
2829 | ||
2830 | return gfc_find_typebound_intrinsic_op (super_type, t, op, | |
2831 | noaccess, where); | |
2832 | } | |
2833 | ||
2834 | /* Nothing found. */ | |
2835 | return NULL; | |
2836 | } | |
2837 | ||
2838 | ||
2839 | /* Get a typebound-procedure symtree or create and insert it if not yet | |
2840 | present. This is like a very simplified version of gfc_get_sym_tree for | |
2841 | tbp-symtrees rather than regular ones. */ | |
2842 | ||
2843 | gfc_symtree* | |
2844 | gfc_get_tbp_symtree (gfc_symtree **root, const char *name) | |
2845 | { | |
2846 | gfc_symtree *result; | |
2847 | ||
2848 | result = gfc_find_symtree (*root, name); | |
2849 | if (!result) | |
2850 | { | |
2851 | result = gfc_new_symtree (root, name); | |
2852 | gcc_assert (result); | |
2853 | result->n.tb = NULL; | |
2854 | } | |
2855 | ||
2856 | return result; | |
2857 | } |