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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 | ||
2cc6320d JW |
415 | /* Build an initializer for CLASS pointers, |
416 | initializing the _data component to the init_expr (or NULL) and the _vptr | |
417 | component to the corresponding type (or the declared type, given by ts). */ | |
d15bac21 JW |
418 | |
419 | gfc_expr * | |
2cc6320d | 420 | gfc_class_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); |
2cc6320d JW |
433 | else if (init_expr && init_expr->expr_type != EXPR_NULL) |
434 | vtab = gfc_find_derived_vtab (init_expr->ts.u.derived); | |
8b704316 PT |
435 | else |
436 | vtab = gfc_find_derived_vtab (ts->u.derived); | |
437 | ||
d15bac21 JW |
438 | init = gfc_get_structure_constructor_expr (ts->type, ts->kind, |
439 | &ts->u.derived->declared_at); | |
440 | init->ts = *ts; | |
8b704316 | 441 | |
d15bac21 JW |
442 | for (comp = ts->u.derived->components; comp; comp = comp->next) |
443 | { | |
444 | gfc_constructor *ctor = gfc_constructor_get(); | |
8b704316 PT |
445 | if (strcmp (comp->name, "_vptr") == 0 && vtab) |
446 | ctor->expr = gfc_lval_expr_from_sym (vtab); | |
2cc6320d JW |
447 | else if (init_expr && init_expr->expr_type != EXPR_NULL) |
448 | ctor->expr = gfc_copy_expr (init_expr); | |
0d87fa8c JW |
449 | else |
450 | ctor->expr = gfc_get_null_expr (NULL); | |
d15bac21 JW |
451 | gfc_constructor_append (&init->value.constructor, ctor); |
452 | } | |
453 | ||
454 | return init; | |
455 | } | |
456 | ||
457 | ||
b04533af JW |
458 | /* Create a unique string identifier for a derived type, composed of its name |
459 | and module name. This is used to construct unique names for the class | |
460 | containers and vtab symbols. */ | |
461 | ||
462 | static void | |
463 | get_unique_type_string (char *string, gfc_symbol *derived) | |
b52956be JW |
464 | { |
465 | char dt_name[GFC_MAX_SYMBOL_LEN+1]; | |
8b704316 | 466 | if (derived->attr.unlimited_polymorphic) |
f5acf0f2 | 467 | strcpy (dt_name, "STAR"); |
8b704316 | 468 | else |
f5acf0f2 | 469 | strcpy (dt_name, derived->name); |
b52956be | 470 | dt_name[0] = TOUPPER (dt_name[0]); |
8b704316 PT |
471 | if (derived->attr.unlimited_polymorphic) |
472 | sprintf (string, "_%s", dt_name); | |
473 | else if (derived->module) | |
b52956be | 474 | sprintf (string, "%s_%s", derived->module, dt_name); |
4fa02692 | 475 | else if (derived->ns->proc_name) |
b52956be | 476 | sprintf (string, "%s_%s", derived->ns->proc_name->name, dt_name); |
4fa02692 | 477 | else |
b52956be | 478 | sprintf (string, "_%s", dt_name); |
4fa02692 JW |
479 | } |
480 | ||
481 | ||
482 | /* A relative of 'get_unique_type_string' which makes sure the generated | |
483 | string will not be too long (replacing it by a hash string if needed). */ | |
484 | ||
485 | static void | |
486 | get_unique_hashed_string (char *string, gfc_symbol *derived) | |
487 | { | |
488 | char tmp[2*GFC_MAX_SYMBOL_LEN+2]; | |
489 | get_unique_type_string (&tmp[0], derived); | |
cb83a137 | 490 | /* If string is too long, use hash value in hex representation (allow for |
2419ff64 TB |
491 | extra decoration, cf. gfc_build_class_symbol & gfc_find_derived_vtab). |
492 | We need space to for 15 characters "__class_" + symbol name + "_%d_%da", | |
493 | where %d is the (co)rank which can be up to n = 15. */ | |
494 | if (strlen (tmp) > GFC_MAX_SYMBOL_LEN - 15) | |
4fa02692 JW |
495 | { |
496 | int h = gfc_hash_value (derived); | |
497 | sprintf (string, "%X", h); | |
498 | } | |
499 | else | |
500 | strcpy (string, tmp); | |
501 | } | |
502 | ||
503 | ||
504 | /* Assign a hash value for a derived type. The algorithm is that of SDBM. */ | |
505 | ||
506 | unsigned int | |
507 | gfc_hash_value (gfc_symbol *sym) | |
508 | { | |
509 | unsigned int hash = 0; | |
510 | char c[2*(GFC_MAX_SYMBOL_LEN+1)]; | |
511 | int i, len; | |
8b704316 | 512 | |
4fa02692 JW |
513 | get_unique_type_string (&c[0], sym); |
514 | len = strlen (c); | |
8b704316 PT |
515 | |
516 | for (i = 0; i < len; i++) | |
517 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
518 | ||
519 | /* Return the hash but take the modulus for the sake of module read, | |
520 | even though this slightly increases the chance of collision. */ | |
521 | return (hash % 100000000); | |
522 | } | |
523 | ||
524 | ||
525 | /* Assign a hash value for an intrinsic type. The algorithm is that of SDBM. */ | |
526 | ||
527 | unsigned int | |
528 | gfc_intrinsic_hash_value (gfc_typespec *ts) | |
529 | { | |
530 | unsigned int hash = 0; | |
531 | const char *c = gfc_typename (ts); | |
532 | int i, len; | |
533 | ||
534 | len = strlen (c); | |
535 | ||
4fa02692 JW |
536 | for (i = 0; i < len; i++) |
537 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
538 | ||
539 | /* Return the hash but take the modulus for the sake of module read, | |
540 | even though this slightly increases the chance of collision. */ | |
541 | return (hash % 100000000); | |
b04533af JW |
542 | } |
543 | ||
544 | ||
d15bac21 JW |
545 | /* Build a polymorphic CLASS entity, using the symbol that comes from |
546 | build_sym. A CLASS entity is represented by an encapsulating type, | |
b04533af JW |
547 | which contains the declared type as '_data' component, plus a pointer |
548 | component '_vptr' which determines the dynamic type. */ | |
d15bac21 | 549 | |
524af0d6 | 550 | bool |
d15bac21 JW |
551 | gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr, |
552 | gfc_array_spec **as, bool delayed_vtab) | |
553 | { | |
4fa02692 | 554 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; |
d15bac21 JW |
555 | gfc_symbol *fclass; |
556 | gfc_symbol *vtab; | |
557 | gfc_component *c; | |
8b704316 | 558 | gfc_namespace *ns; |
c62c6622 | 559 | int rank; |
c49ea23d | 560 | |
fc2655fb TB |
561 | gcc_assert (as); |
562 | ||
563 | if (*as && (*as)->type == AS_ASSUMED_SIZE) | |
c49ea23d PT |
564 | { |
565 | gfc_error ("Assumed size polymorphic objects or components, such " | |
566 | "as that at %C, have not yet been implemented"); | |
524af0d6 | 567 | return false; |
c49ea23d PT |
568 | } |
569 | ||
528622fd JW |
570 | if (attr->class_ok) |
571 | /* Class container has already been built. */ | |
524af0d6 | 572 | return true; |
528622fd | 573 | |
7d40e49f | 574 | attr->class_ok = attr->dummy || attr->pointer || attr->allocatable |
aa271860 | 575 | || attr->select_type_temporary || attr->associate_var; |
8b704316 | 576 | |
528622fd JW |
577 | if (!attr->class_ok) |
578 | /* We can not build the class container yet. */ | |
524af0d6 | 579 | return true; |
d15bac21 JW |
580 | |
581 | /* Determine the name of the encapsulating type. */ | |
c62c6622 | 582 | rank = !(*as) || (*as)->rank == -1 ? GFC_MAX_DIMENSIONS : (*as)->rank; |
4fa02692 | 583 | get_unique_hashed_string (tname, ts->u.derived); |
2419ff64 | 584 | if ((*as) && attr->allocatable) |
c62c6622 TB |
585 | sprintf (name, "__class_%s_%d_%da", tname, rank, (*as)->corank); |
586 | else if ((*as) && attr->pointer) | |
587 | sprintf (name, "__class_%s_%d_%dp", tname, rank, (*as)->corank); | |
2419ff64 | 588 | else if ((*as)) |
c62c6622 | 589 | sprintf (name, "__class_%s_%d_%d", tname, rank, (*as)->corank); |
d15bac21 | 590 | else if (attr->pointer) |
b04533af | 591 | sprintf (name, "__class_%s_p", tname); |
d15bac21 | 592 | else if (attr->allocatable) |
b04533af | 593 | sprintf (name, "__class_%s_a", tname); |
d15bac21 | 594 | else |
b04533af | 595 | sprintf (name, "__class_%s", tname); |
d15bac21 | 596 | |
8b704316 PT |
597 | if (ts->u.derived->attr.unlimited_polymorphic) |
598 | { | |
599 | /* Find the top-level namespace. */ | |
600 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
601 | if (!ns->parent) | |
602 | break; | |
603 | } | |
604 | else | |
605 | ns = ts->u.derived->ns; | |
606 | ||
607 | gfc_find_symbol (name, ns, 0, &fclass); | |
d15bac21 JW |
608 | if (fclass == NULL) |
609 | { | |
610 | gfc_symtree *st; | |
611 | /* If not there, create a new symbol. */ | |
8b704316 PT |
612 | fclass = gfc_new_symbol (name, ns); |
613 | st = gfc_new_symtree (&ns->sym_root, name); | |
d15bac21 JW |
614 | st->n.sym = fclass; |
615 | gfc_set_sym_referenced (fclass); | |
616 | fclass->refs++; | |
617 | fclass->ts.type = BT_UNKNOWN; | |
8b704316 | 618 | if (!ts->u.derived->attr.unlimited_polymorphic) |
94241120 | 619 | fclass->attr.abstract = ts->u.derived->attr.abstract; |
42ff605a | 620 | fclass->f2k_derived = gfc_get_namespace (NULL, 0); |
524af0d6 JB |
621 | if (!gfc_add_flavor (&fclass->attr, FL_DERIVED, NULL, |
622 | &gfc_current_locus)) | |
623 | return false; | |
d15bac21 | 624 | |
b04533af | 625 | /* Add component '_data'. */ |
524af0d6 JB |
626 | if (!gfc_add_component (fclass, "_data", &c)) |
627 | return false; | |
d15bac21 JW |
628 | c->ts = *ts; |
629 | c->ts.type = BT_DERIVED; | |
630 | c->attr.access = ACCESS_PRIVATE; | |
631 | c->ts.u.derived = ts->u.derived; | |
632 | c->attr.class_pointer = attr->pointer; | |
7d40e49f TB |
633 | c->attr.pointer = attr->pointer || (attr->dummy && !attr->allocatable) |
634 | || attr->select_type_temporary; | |
d15bac21 JW |
635 | c->attr.allocatable = attr->allocatable; |
636 | c->attr.dimension = attr->dimension; | |
637 | c->attr.codimension = attr->codimension; | |
8b704316 | 638 | c->attr.abstract = fclass->attr.abstract; |
d15bac21 JW |
639 | c->as = (*as); |
640 | c->initializer = NULL; | |
641 | ||
b04533af | 642 | /* Add component '_vptr'. */ |
524af0d6 JB |
643 | if (!gfc_add_component (fclass, "_vptr", &c)) |
644 | return false; | |
d15bac21 | 645 | c->ts.type = BT_DERIVED; |
8e54f139 TB |
646 | if (delayed_vtab |
647 | || (ts->u.derived->f2k_derived | |
648 | && ts->u.derived->f2k_derived->finalizers)) | |
d15bac21 JW |
649 | c->ts.u.derived = NULL; |
650 | else | |
651 | { | |
88ce8031 | 652 | vtab = gfc_find_derived_vtab (ts->u.derived); |
d15bac21 JW |
653 | gcc_assert (vtab); |
654 | c->ts.u.derived = vtab->ts.u.derived; | |
655 | } | |
f3f98a1e | 656 | c->attr.access = ACCESS_PRIVATE; |
d15bac21 JW |
657 | c->attr.pointer = 1; |
658 | } | |
659 | ||
8b704316 | 660 | if (!ts->u.derived->attr.unlimited_polymorphic) |
d15bac21 | 661 | { |
8b704316 PT |
662 | /* Since the extension field is 8 bit wide, we can only have |
663 | up to 255 extension levels. */ | |
664 | if (ts->u.derived->attr.extension == 255) | |
665 | { | |
666 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
667 | ts->u.derived->name, &ts->u.derived->declared_at); | |
524af0d6 | 668 | return false; |
8b704316 PT |
669 | } |
670 | ||
671 | fclass->attr.extension = ts->u.derived->attr.extension + 1; | |
672 | fclass->attr.alloc_comp = ts->u.derived->attr.alloc_comp; | |
558f3755 | 673 | fclass->attr.coarray_comp = ts->u.derived->attr.coarray_comp; |
d15bac21 | 674 | } |
8b704316 | 675 | |
d15bac21 JW |
676 | fclass->attr.is_class = 1; |
677 | ts->u.derived = fclass; | |
c49ea23d PT |
678 | attr->allocatable = attr->pointer = attr->dimension = attr->codimension = 0; |
679 | (*as) = NULL; | |
524af0d6 | 680 | return true; |
d15bac21 JW |
681 | } |
682 | ||
683 | ||
88ce8031 JW |
684 | /* Add a procedure pointer component to the vtype |
685 | to represent a specific type-bound procedure. */ | |
686 | ||
d15bac21 | 687 | static void |
88ce8031 | 688 | add_proc_comp (gfc_symbol *vtype, const char *name, gfc_typebound_proc *tb) |
d15bac21 | 689 | { |
88ce8031 | 690 | gfc_component *c; |
fd83db3d JW |
691 | |
692 | if (tb->non_overridable) | |
693 | return; | |
8b704316 | 694 | |
88ce8031 JW |
695 | c = gfc_find_component (vtype, name, true, true); |
696 | ||
697 | if (c == NULL) | |
d15bac21 | 698 | { |
88ce8031 | 699 | /* Add procedure component. */ |
524af0d6 | 700 | if (!gfc_add_component (vtype, name, &c)) |
d15bac21 | 701 | return; |
d15bac21 | 702 | |
88ce8031 JW |
703 | if (!c->tb) |
704 | c->tb = XCNEW (gfc_typebound_proc); | |
705 | *c->tb = *tb; | |
706 | c->tb->ppc = 1; | |
707 | c->attr.procedure = 1; | |
708 | c->attr.proc_pointer = 1; | |
709 | c->attr.flavor = FL_PROCEDURE; | |
710 | c->attr.access = ACCESS_PRIVATE; | |
711 | c->attr.external = 1; | |
712 | c->attr.untyped = 1; | |
713 | c->attr.if_source = IFSRC_IFBODY; | |
d15bac21 JW |
714 | } |
715 | else if (c->attr.proc_pointer && c->tb) | |
716 | { | |
88ce8031 | 717 | *c->tb = *tb; |
d15bac21 | 718 | c->tb->ppc = 1; |
1d0134b3 JW |
719 | } |
720 | ||
721 | if (tb->u.specific) | |
722 | { | |
723 | c->ts.interface = tb->u.specific->n.sym; | |
724 | if (!tb->deferred) | |
725 | c->initializer = gfc_get_variable_expr (tb->u.specific); | |
d15bac21 JW |
726 | } |
727 | } | |
728 | ||
88ce8031 JW |
729 | |
730 | /* Add all specific type-bound procedures in the symtree 'st' to a vtype. */ | |
731 | ||
d15bac21 | 732 | static void |
88ce8031 | 733 | add_procs_to_declared_vtab1 (gfc_symtree *st, gfc_symbol *vtype) |
d15bac21 | 734 | { |
d15bac21 JW |
735 | if (!st) |
736 | return; | |
737 | ||
738 | if (st->left) | |
88ce8031 | 739 | add_procs_to_declared_vtab1 (st->left, vtype); |
d15bac21 JW |
740 | |
741 | if (st->right) | |
88ce8031 | 742 | add_procs_to_declared_vtab1 (st->right, vtype); |
d15bac21 | 743 | |
8b704316 | 744 | if (st->n.tb && !st->n.tb->error |
aea18e92 | 745 | && !st->n.tb->is_generic && st->n.tb->u.specific) |
88ce8031 | 746 | add_proc_comp (vtype, st->name, st->n.tb); |
d15bac21 JW |
747 | } |
748 | ||
749 | ||
88ce8031 JW |
750 | /* Copy procedure pointers components from the parent type. */ |
751 | ||
d15bac21 | 752 | static void |
88ce8031 | 753 | copy_vtab_proc_comps (gfc_symbol *declared, gfc_symbol *vtype) |
d15bac21 | 754 | { |
88ce8031 | 755 | gfc_component *cmp; |
d15bac21 JW |
756 | gfc_symbol *vtab; |
757 | ||
88ce8031 | 758 | vtab = gfc_find_derived_vtab (declared); |
d15bac21 JW |
759 | |
760 | for (cmp = vtab->ts.u.derived->components; cmp; cmp = cmp->next) | |
761 | { | |
762 | if (gfc_find_component (vtype, cmp->name, true, true)) | |
763 | continue; | |
764 | ||
88ce8031 | 765 | add_proc_comp (vtype, cmp->name, cmp->tb); |
d15bac21 JW |
766 | } |
767 | } | |
768 | ||
d15bac21 | 769 | |
8e54f139 TB |
770 | /* Returns true if any of its nonpointer nonallocatable components or |
771 | their nonpointer nonallocatable subcomponents has a finalization | |
772 | subroutine. */ | |
773 | ||
774 | static bool | |
775 | has_finalizer_component (gfc_symbol *derived) | |
776 | { | |
777 | gfc_component *c; | |
778 | ||
779 | for (c = derived->components; c; c = c->next) | |
780 | { | |
781 | if (c->ts.type == BT_DERIVED && c->ts.u.derived->f2k_derived | |
782 | && c->ts.u.derived->f2k_derived->finalizers) | |
783 | return true; | |
784 | ||
785 | if (c->ts.type == BT_DERIVED | |
786 | && !c->attr.pointer && !c->attr.allocatable | |
787 | && has_finalizer_component (c->ts.u.derived)) | |
788 | return true; | |
789 | } | |
790 | return false; | |
791 | } | |
792 | ||
793 | ||
794 | /* Call DEALLOCATE for the passed component if it is allocatable, if it is | |
795 | neither allocatable nor a pointer but has a finalizer, call it. If it | |
bc7a2337 TB |
796 | is a nonpointer component with allocatable components or has finalizers, walk |
797 | them. Either of them is required; other nonallocatables and pointers aren't | |
8e54f139 TB |
798 | handled gracefully. |
799 | Note: If the component is allocatable, the DEALLOCATE handling takes care | |
800 | of calling the appropriate finalizers, coarray deregistering, and | |
801 | deallocation of allocatable subcomponents. */ | |
802 | ||
803 | static void | |
804 | finalize_component (gfc_expr *expr, gfc_symbol *derived, gfc_component *comp, | |
29a7d776 | 805 | gfc_symbol *stat, gfc_symbol *fini_coarray, gfc_code **code) |
8e54f139 TB |
806 | { |
807 | gfc_expr *e; | |
808 | gfc_ref *ref; | |
809 | ||
810 | if (comp->ts.type != BT_DERIVED && comp->ts.type != BT_CLASS | |
811 | && !comp->attr.allocatable) | |
812 | return; | |
813 | ||
814 | if ((comp->ts.type == BT_DERIVED && comp->attr.pointer) | |
815 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
816 | && CLASS_DATA (comp)->attr.pointer)) | |
817 | return; | |
818 | ||
819 | if (comp->ts.type == BT_DERIVED && !comp->attr.allocatable | |
820 | && (comp->ts.u.derived->f2k_derived == NULL | |
821 | || comp->ts.u.derived->f2k_derived->finalizers == NULL) | |
822 | && !has_finalizer_component (comp->ts.u.derived)) | |
823 | return; | |
824 | ||
825 | e = gfc_copy_expr (expr); | |
826 | if (!e->ref) | |
827 | e->ref = ref = gfc_get_ref (); | |
828 | else | |
829 | { | |
830 | for (ref = e->ref; ref->next; ref = ref->next) | |
831 | ; | |
832 | ref->next = gfc_get_ref (); | |
833 | ref = ref->next; | |
834 | } | |
835 | ref->type = REF_COMPONENT; | |
836 | ref->u.c.sym = derived; | |
837 | ref->u.c.component = comp; | |
838 | e->ts = comp->ts; | |
839 | ||
16023efc | 840 | if (comp->attr.dimension || comp->attr.codimension |
8e54f139 | 841 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) |
16023efc TB |
842 | && (CLASS_DATA (comp)->attr.dimension |
843 | || CLASS_DATA (comp)->attr.codimension))) | |
8e54f139 TB |
844 | { |
845 | ref->next = gfc_get_ref (); | |
846 | ref->next->type = REF_ARRAY; | |
8e54f139 TB |
847 | ref->next->u.ar.dimen = 0; |
848 | ref->next->u.ar.as = comp->ts.type == BT_CLASS ? CLASS_DATA (comp)->as | |
849 | : comp->as; | |
850 | e->rank = ref->next->u.ar.as->rank; | |
16023efc | 851 | ref->next->u.ar.type = e->rank ? AR_FULL : AR_ELEMENT; |
8e54f139 TB |
852 | } |
853 | ||
29a7d776 | 854 | /* Call DEALLOCATE (comp, stat=ignore). */ |
8e54f139 TB |
855 | if (comp->attr.allocatable |
856 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
857 | && CLASS_DATA (comp)->attr.allocatable)) | |
858 | { | |
29a7d776 TB |
859 | gfc_code *dealloc, *block = NULL; |
860 | ||
861 | /* Add IF (fini_coarray). */ | |
862 | if (comp->attr.codimension | |
863 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
864 | && CLASS_DATA (comp)->attr.allocatable)) | |
865 | { | |
866 | block = XCNEW (gfc_code); | |
867 | if (*code) | |
868 | { | |
869 | (*code)->next = block; | |
870 | (*code) = (*code)->next; | |
871 | } | |
872 | else | |
873 | (*code) = block; | |
874 | ||
875 | block->loc = gfc_current_locus; | |
876 | block->op = EXEC_IF; | |
877 | ||
878 | block->block = XCNEW (gfc_code); | |
879 | block = block->block; | |
880 | block->loc = gfc_current_locus; | |
881 | block->op = EXEC_IF; | |
882 | block->expr1 = gfc_lval_expr_from_sym (fini_coarray); | |
883 | } | |
8e54f139 TB |
884 | |
885 | dealloc = XCNEW (gfc_code); | |
886 | dealloc->op = EXEC_DEALLOCATE; | |
887 | dealloc->loc = gfc_current_locus; | |
888 | ||
889 | dealloc->ext.alloc.list = gfc_get_alloc (); | |
890 | dealloc->ext.alloc.list->expr = e; | |
29a7d776 | 891 | dealloc->expr1 = gfc_lval_expr_from_sym (stat); |
8e54f139 | 892 | |
29a7d776 TB |
893 | if (block) |
894 | block->next = dealloc; | |
895 | else if (*code) | |
8e54f139 TB |
896 | { |
897 | (*code)->next = dealloc; | |
898 | (*code) = (*code)->next; | |
899 | } | |
900 | else | |
901 | (*code) = dealloc; | |
902 | } | |
903 | else if (comp->ts.type == BT_DERIVED | |
904 | && comp->ts.u.derived->f2k_derived | |
905 | && comp->ts.u.derived->f2k_derived->finalizers) | |
906 | { | |
907 | /* Call FINAL_WRAPPER (comp); */ | |
908 | gfc_code *final_wrap; | |
909 | gfc_symbol *vtab; | |
910 | gfc_component *c; | |
911 | ||
912 | vtab = gfc_find_derived_vtab (comp->ts.u.derived); | |
913 | for (c = vtab->ts.u.derived->components; c; c = c->next) | |
914 | if (strcmp (c->name, "_final") == 0) | |
915 | break; | |
916 | ||
917 | gcc_assert (c); | |
918 | final_wrap = XCNEW (gfc_code); | |
919 | final_wrap->op = EXEC_CALL; | |
920 | final_wrap->loc = gfc_current_locus; | |
921 | final_wrap->loc = gfc_current_locus; | |
922 | final_wrap->symtree = c->initializer->symtree; | |
923 | final_wrap->resolved_sym = c->initializer->symtree->n.sym; | |
924 | final_wrap->ext.actual = gfc_get_actual_arglist (); | |
925 | final_wrap->ext.actual->expr = e; | |
926 | ||
927 | if (*code) | |
928 | { | |
929 | (*code)->next = final_wrap; | |
930 | (*code) = (*code)->next; | |
931 | } | |
932 | else | |
933 | (*code) = final_wrap; | |
934 | } | |
935 | else | |
936 | { | |
937 | gfc_component *c; | |
938 | ||
939 | for (c = comp->ts.u.derived->components; c; c = c->next) | |
29a7d776 | 940 | finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray, code); |
fc2655fb | 941 | gfc_free_expr (e); |
8e54f139 TB |
942 | } |
943 | } | |
944 | ||
945 | ||
946 | /* Generate code equivalent to | |
947 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b | 948 | + offset, c_ptr), ptr). */ |
8e54f139 TB |
949 | |
950 | static gfc_code * | |
9e04287b TB |
951 | finalization_scalarizer (gfc_symbol *array, gfc_symbol *ptr, |
952 | gfc_expr *offset, gfc_namespace *sub_ns) | |
8e54f139 TB |
953 | { |
954 | gfc_code *block; | |
9e04287b | 955 | gfc_expr *expr, *expr2; |
8e54f139 TB |
956 | |
957 | /* C_F_POINTER(). */ | |
958 | block = XCNEW (gfc_code); | |
959 | block->op = EXEC_CALL; | |
960 | block->loc = gfc_current_locus; | |
961 | gfc_get_sym_tree ("c_f_pointer", sub_ns, &block->symtree, true); | |
962 | block->resolved_sym = block->symtree->n.sym; | |
963 | block->resolved_sym->attr.flavor = FL_PROCEDURE; | |
964 | block->resolved_sym->attr.intrinsic = 1; | |
cbde6c0f | 965 | block->resolved_sym->attr.subroutine = 1; |
8e54f139 TB |
966 | block->resolved_sym->from_intmod = INTMOD_ISO_C_BINDING; |
967 | block->resolved_sym->intmod_sym_id = ISOCBINDING_F_POINTER; | |
cbde6c0f | 968 | block->resolved_isym = gfc_intrinsic_subroutine_by_id (GFC_ISYM_C_F_POINTER); |
8e54f139 TB |
969 | gfc_commit_symbol (block->resolved_sym); |
970 | ||
971 | /* C_F_POINTER's first argument: TRANSFER ( <addr>, c_intptr_t). */ | |
972 | block->ext.actual = gfc_get_actual_arglist (); | |
973 | block->ext.actual->next = gfc_get_actual_arglist (); | |
974 | block->ext.actual->next->expr = gfc_get_int_expr (gfc_index_integer_kind, | |
975 | NULL, 0); | |
cbde6c0f | 976 | block->ext.actual->next->next = gfc_get_actual_arglist (); /* SIZE. */ |
8e54f139 TB |
977 | |
978 | /* The <addr> part: TRANSFER (C_LOC (array), c_intptr_t). */ | |
979 | ||
8e54f139 TB |
980 | /* TRANSFER's first argument: C_LOC (array). */ |
981 | expr = gfc_get_expr (); | |
982 | expr->expr_type = EXPR_FUNCTION; | |
983 | gfc_get_sym_tree ("c_loc", sub_ns, &expr->symtree, false); | |
984 | expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
985 | expr->symtree->n.sym->intmod_sym_id = ISOCBINDING_LOC; | |
986 | expr->symtree->n.sym->attr.intrinsic = 1; | |
987 | expr->symtree->n.sym->from_intmod = INTMOD_ISO_C_BINDING; | |
cbde6c0f | 988 | expr->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_C_LOC); |
8e54f139 TB |
989 | expr->value.function.actual = gfc_get_actual_arglist (); |
990 | expr->value.function.actual->expr | |
991 | = gfc_lval_expr_from_sym (array); | |
992 | expr->symtree->n.sym->result = expr->symtree->n.sym; | |
993 | gfc_commit_symbol (expr->symtree->n.sym); | |
994 | expr->ts.type = BT_INTEGER; | |
995 | expr->ts.kind = gfc_index_integer_kind; | |
6838c137 TB |
996 | |
997 | /* TRANSFER. */ | |
998 | expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_TRANSFER, "transfer", | |
cbde6c0f | 999 | gfc_current_locus, 3, expr, |
6838c137 | 1000 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1001 | NULL, 0), NULL); |
6838c137 TB |
1002 | expr2->ts.type = BT_INTEGER; |
1003 | expr2->ts.kind = gfc_index_integer_kind; | |
8e54f139 | 1004 | |
8e54f139 TB |
1005 | /* <array addr> + <offset>. */ |
1006 | block->ext.actual->expr = gfc_get_expr (); | |
1007 | block->ext.actual->expr->expr_type = EXPR_OP; | |
1008 | block->ext.actual->expr->value.op.op = INTRINSIC_PLUS; | |
1009 | block->ext.actual->expr->value.op.op1 = expr2; | |
9e04287b | 1010 | block->ext.actual->expr->value.op.op2 = offset; |
8e54f139 TB |
1011 | block->ext.actual->expr->ts = expr->ts; |
1012 | ||
1013 | /* C_F_POINTER's 2nd arg: ptr -- and its absent shape=. */ | |
1014 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1015 | block->ext.actual->next->expr = gfc_lval_expr_from_sym (ptr); | |
1016 | block->ext.actual->next->next = gfc_get_actual_arglist (); | |
1017 | ||
1018 | return block; | |
1019 | } | |
1020 | ||
1021 | ||
9e04287b TB |
1022 | /* Calculates the offset to the (idx+1)th element of an array, taking the |
1023 | stride into account. It generates the code: | |
1024 | offset = 0 | |
1025 | do idx2 = 1, rank | |
1026 | offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) * strides(idx2) | |
1027 | end do | |
1028 | offset = offset * byte_stride. */ | |
1029 | ||
1030 | static gfc_code* | |
1031 | finalization_get_offset (gfc_symbol *idx, gfc_symbol *idx2, gfc_symbol *offset, | |
1032 | gfc_symbol *strides, gfc_symbol *sizes, | |
1033 | gfc_symbol *byte_stride, gfc_expr *rank, | |
1034 | gfc_code *block, gfc_namespace *sub_ns) | |
1035 | { | |
1036 | gfc_iterator *iter; | |
1037 | gfc_expr *expr, *expr2; | |
1038 | ||
1039 | /* offset = 0. */ | |
1040 | block->next = XCNEW (gfc_code); | |
1041 | block = block->next; | |
1042 | block->op = EXEC_ASSIGN; | |
1043 | block->loc = gfc_current_locus; | |
1044 | block->expr1 = gfc_lval_expr_from_sym (offset); | |
1045 | block->expr2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1046 | ||
1047 | /* Create loop. */ | |
1048 | iter = gfc_get_iterator (); | |
1049 | iter->var = gfc_lval_expr_from_sym (idx2); | |
1050 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1051 | iter->end = gfc_copy_expr (rank); | |
1052 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1053 | block->next = XCNEW (gfc_code); | |
1054 | block = block->next; | |
1055 | block->op = EXEC_DO; | |
1056 | block->loc = gfc_current_locus; | |
1057 | block->ext.iterator = iter; | |
1058 | block->block = gfc_get_code (); | |
1059 | block->block->op = EXEC_DO; | |
1060 | ||
1061 | /* Loop body: offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) | |
1062 | * strides(idx2). */ | |
1063 | ||
1064 | /* mod (idx, sizes(idx2)). */ | |
6838c137 TB |
1065 | expr = gfc_lval_expr_from_sym (sizes); |
1066 | expr->ref = gfc_get_ref (); | |
1067 | expr->ref->type = REF_ARRAY; | |
1068 | expr->ref->u.ar.as = sizes->as; | |
1069 | expr->ref->u.ar.type = AR_ELEMENT; | |
1070 | expr->ref->u.ar.dimen = 1; | |
1071 | expr->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1072 | expr->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1073 | ||
1074 | expr = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_MOD, "mod", | |
1075 | gfc_current_locus, 2, | |
1076 | gfc_lval_expr_from_sym (idx), expr); | |
9e04287b TB |
1077 | expr->ts = idx->ts; |
1078 | ||
1079 | /* (...) / sizes(idx2-1). */ | |
1080 | expr2 = gfc_get_expr (); | |
1081 | expr2->expr_type = EXPR_OP; | |
1082 | expr2->value.op.op = INTRINSIC_DIVIDE; | |
1083 | expr2->value.op.op1 = expr; | |
1084 | expr2->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1085 | expr2->value.op.op2->ref = gfc_get_ref (); | |
1086 | expr2->value.op.op2->ref->type = REF_ARRAY; | |
1087 | expr2->value.op.op2->ref->u.ar.as = sizes->as; | |
1088 | expr2->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1089 | expr2->value.op.op2->ref->u.ar.dimen = 1; | |
1090 | expr2->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1091 | expr2->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1092 | expr2->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1093 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1094 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1095 | = gfc_lval_expr_from_sym (idx2); | |
1096 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1097 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1098 | expr2->value.op.op2->ref->u.ar.start[0]->ts | |
1099 | = expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1100 | expr2->ts = idx->ts; | |
1101 | ||
1102 | /* ... * strides(idx2). */ | |
1103 | expr = gfc_get_expr (); | |
1104 | expr->expr_type = EXPR_OP; | |
1105 | expr->value.op.op = INTRINSIC_TIMES; | |
1106 | expr->value.op.op1 = expr2; | |
1107 | expr->value.op.op2 = gfc_lval_expr_from_sym (strides); | |
1108 | expr->value.op.op2->ref = gfc_get_ref (); | |
1109 | expr->value.op.op2->ref->type = REF_ARRAY; | |
1110 | expr->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1111 | expr->value.op.op2->ref->u.ar.dimen = 1; | |
1112 | expr->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1113 | expr->value.op.op2->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1114 | expr->value.op.op2->ref->u.ar.as = strides->as; | |
1115 | expr->ts = idx->ts; | |
1116 | ||
1117 | /* offset = offset + ... */ | |
1118 | block->block->next = XCNEW (gfc_code); | |
1119 | block->block->next->op = EXEC_ASSIGN; | |
1120 | block->block->next->loc = gfc_current_locus; | |
1121 | block->block->next->expr1 = gfc_lval_expr_from_sym (offset); | |
1122 | block->block->next->expr2 = gfc_get_expr (); | |
1123 | block->block->next->expr2->expr_type = EXPR_OP; | |
1124 | block->block->next->expr2->value.op.op = INTRINSIC_PLUS; | |
1125 | block->block->next->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1126 | block->block->next->expr2->value.op.op2 = expr; | |
1127 | block->block->next->expr2->ts = idx->ts; | |
1128 | ||
1129 | /* After the loop: offset = offset * byte_stride. */ | |
1130 | block->next = XCNEW (gfc_code); | |
1131 | block = block->next; | |
1132 | block->op = EXEC_ASSIGN; | |
1133 | block->loc = gfc_current_locus; | |
1134 | block->expr1 = gfc_lval_expr_from_sym (offset); | |
1135 | block->expr2 = gfc_get_expr (); | |
1136 | block->expr2->expr_type = EXPR_OP; | |
1137 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1138 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1139 | block->expr2->value.op.op2 = gfc_lval_expr_from_sym (byte_stride); | |
1140 | block->expr2->ts = block->expr2->value.op.op1->ts; | |
1141 | return block; | |
1142 | } | |
1143 | ||
1144 | ||
29a7d776 TB |
1145 | /* Insert code of the following form: |
1146 | ||
9e04287b TB |
1147 | block |
1148 | integer(c_intptr_t) :: i | |
1149 | ||
1150 | if ((byte_stride == STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1151 | && (is_contiguous || !final_rank3->attr.contiguous | |
1152 | || final_rank3->as->type != AS_ASSUMED_SHAPE)) | |
1153 | || 0 == STORAGE_SIZE (array)) then | |
1154 | call final_rank3 (array) | |
1155 | else | |
1156 | block | |
1157 | integer(c_intptr_t) :: offset, j | |
1158 | type(t) :: tmp(shape (array)) | |
1159 | ||
1160 | do i = 0, size (array)-1 | |
1161 | offset = obtain_offset(i, strides, sizes, byte_stride) | |
1162 | addr = transfer (c_loc (array), addr) + offset | |
1163 | call c_f_pointer (transfer (addr, cptr), ptr) | |
1164 | ||
1165 | addr = transfer (c_loc (tmp), addr) | |
1166 | + i * STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1167 | call c_f_pointer (transfer (addr, cptr), ptr2) | |
1168 | ptr2 = ptr | |
1169 | end do | |
1170 | call final_rank3 (tmp) | |
1171 | end block | |
1172 | end if | |
1173 | block */ | |
29a7d776 TB |
1174 | |
1175 | static void | |
1176 | finalizer_insert_packed_call (gfc_code *block, gfc_finalizer *fini, | |
9e04287b | 1177 | gfc_symbol *array, gfc_symbol *byte_stride, |
29a7d776 | 1178 | gfc_symbol *idx, gfc_symbol *ptr, |
6838c137 | 1179 | gfc_symbol *nelem, |
9e04287b TB |
1180 | gfc_symbol *strides, gfc_symbol *sizes, |
1181 | gfc_symbol *idx2, gfc_symbol *offset, | |
1182 | gfc_symbol *is_contiguous, gfc_expr *rank, | |
29a7d776 TB |
1183 | gfc_namespace *sub_ns) |
1184 | { | |
1185 | gfc_symbol *tmp_array, *ptr2; | |
9e04287b | 1186 | gfc_expr *size_expr, *offset2, *expr; |
29a7d776 TB |
1187 | gfc_namespace *ns; |
1188 | gfc_iterator *iter; | |
9e04287b | 1189 | gfc_code *block2; |
29a7d776 TB |
1190 | int i; |
1191 | ||
1192 | block->next = XCNEW (gfc_code); | |
1193 | block = block->next; | |
1194 | block->loc = gfc_current_locus; | |
1195 | block->op = EXEC_IF; | |
1196 | ||
1197 | block->block = XCNEW (gfc_code); | |
1198 | block = block->block; | |
1199 | block->loc = gfc_current_locus; | |
1200 | block->op = EXEC_IF; | |
1201 | ||
1202 | /* size_expr = STORAGE_SIZE (...) / NUMERIC_STORAGE_SIZE. */ | |
1203 | size_expr = gfc_get_expr (); | |
1204 | size_expr->where = gfc_current_locus; | |
1205 | size_expr->expr_type = EXPR_OP; | |
1206 | size_expr->value.op.op = INTRINSIC_DIVIDE; | |
1207 | ||
1208 | /* STORAGE_SIZE (array,kind=c_intptr_t). */ | |
6838c137 TB |
1209 | size_expr->value.op.op1 |
1210 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STORAGE_SIZE, | |
1211 | "storage_size", gfc_current_locus, 2, | |
cbde6c0f | 1212 | gfc_lval_expr_from_sym (array), |
6838c137 | 1213 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1214 | NULL, 0)); |
29a7d776 TB |
1215 | |
1216 | /* NUMERIC_STORAGE_SIZE. */ | |
1217 | size_expr->value.op.op2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, | |
1218 | gfc_character_storage_size); | |
1219 | size_expr->value.op.op1->ts = size_expr->value.op.op2->ts; | |
1220 | size_expr->ts = size_expr->value.op.op1->ts; | |
1221 | ||
9e04287b TB |
1222 | /* IF condition: (stride == size_expr |
1223 | && ((fini's as->ASSUMED_SIZE && !fini's attr.contiguous) | |
1224 | || is_contiguous) | |
1225 | || 0 == size_expr. */ | |
29a7d776 | 1226 | block->expr1 = gfc_get_expr (); |
29a7d776 | 1227 | block->expr1->ts.type = BT_LOGICAL; |
9e04287b | 1228 | block->expr1->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1229 | block->expr1->expr_type = EXPR_OP; |
1230 | block->expr1->where = gfc_current_locus; | |
1231 | ||
1232 | block->expr1->value.op.op = INTRINSIC_OR; | |
1233 | ||
9e04287b TB |
1234 | /* byte_stride == size_expr */ |
1235 | expr = gfc_get_expr (); | |
1236 | expr->ts.type = BT_LOGICAL; | |
1237 | expr->ts.kind = gfc_default_logical_kind; | |
1238 | expr->expr_type = EXPR_OP; | |
1239 | expr->where = gfc_current_locus; | |
1240 | expr->value.op.op = INTRINSIC_EQ; | |
1241 | expr->value.op.op1 | |
1242 | = gfc_lval_expr_from_sym (byte_stride); | |
1243 | expr->value.op.op2 = size_expr; | |
1244 | ||
cbde6c0f | 1245 | /* If strides aren't allowed (not assumed shape or CONTIGUOUS), |
9e04287b | 1246 | add is_contiguous check. */ |
cbde6c0f | 1247 | |
9e04287b TB |
1248 | if (fini->proc_tree->n.sym->formal->sym->as->type != AS_ASSUMED_SHAPE |
1249 | || fini->proc_tree->n.sym->formal->sym->attr.contiguous) | |
1250 | { | |
1251 | gfc_expr *expr2; | |
1252 | expr2 = gfc_get_expr (); | |
1253 | expr2->ts.type = BT_LOGICAL; | |
1254 | expr2->ts.kind = gfc_default_logical_kind; | |
1255 | expr2->expr_type = EXPR_OP; | |
1256 | expr2->where = gfc_current_locus; | |
1257 | expr2->value.op.op = INTRINSIC_AND; | |
1258 | expr2->value.op.op1 = expr; | |
1259 | expr2->value.op.op2 = gfc_lval_expr_from_sym (is_contiguous); | |
1260 | expr = expr2; | |
1261 | } | |
1262 | ||
1263 | block->expr1->value.op.op1 = expr; | |
29a7d776 TB |
1264 | |
1265 | /* 0 == size_expr */ | |
1266 | block->expr1->value.op.op2 = gfc_get_expr (); | |
29a7d776 | 1267 | block->expr1->value.op.op2->ts.type = BT_LOGICAL; |
9e04287b | 1268 | block->expr1->value.op.op2->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1269 | block->expr1->value.op.op2->expr_type = EXPR_OP; |
1270 | block->expr1->value.op.op2->where = gfc_current_locus; | |
1271 | block->expr1->value.op.op2->value.op.op = INTRINSIC_EQ; | |
1272 | block->expr1->value.op.op2->value.op.op1 = | |
1273 | gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1274 | block->expr1->value.op.op2->value.op.op2 = gfc_copy_expr (size_expr); | |
1275 | ||
1276 | /* IF body: call final subroutine. */ | |
1277 | block->next = XCNEW (gfc_code); | |
1278 | block->next->op = EXEC_CALL; | |
1279 | block->next->loc = gfc_current_locus; | |
1280 | block->next->symtree = fini->proc_tree; | |
1281 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1282 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1283 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
1284 | ||
1285 | /* ELSE. */ | |
1286 | ||
1287 | block->block = XCNEW (gfc_code); | |
1288 | block = block->block; | |
1289 | block->loc = gfc_current_locus; | |
1290 | block->op = EXEC_IF; | |
1291 | ||
1292 | block->next = XCNEW (gfc_code); | |
1293 | block = block->next; | |
1294 | ||
1295 | /* BLOCK ... END BLOCK. */ | |
1296 | block->op = EXEC_BLOCK; | |
1297 | block->loc = gfc_current_locus; | |
1298 | ns = gfc_build_block_ns (sub_ns); | |
1299 | block->ext.block.ns = ns; | |
1300 | block->ext.block.assoc = NULL; | |
1301 | ||
1302 | gfc_get_symbol ("ptr2", ns, &ptr2); | |
1303 | ptr2->ts.type = BT_DERIVED; | |
1304 | ptr2->ts.u.derived = array->ts.u.derived; | |
1305 | ptr2->attr.flavor = FL_VARIABLE; | |
1306 | ptr2->attr.pointer = 1; | |
1307 | ptr2->attr.artificial = 1; | |
1308 | gfc_set_sym_referenced (ptr2); | |
1309 | gfc_commit_symbol (ptr2); | |
1310 | ||
1311 | gfc_get_symbol ("tmp_array", ns, &tmp_array); | |
1312 | tmp_array->ts.type = BT_DERIVED; | |
1313 | tmp_array->ts.u.derived = array->ts.u.derived; | |
1314 | tmp_array->attr.flavor = FL_VARIABLE; | |
29a7d776 TB |
1315 | tmp_array->attr.dimension = 1; |
1316 | tmp_array->attr.artificial = 1; | |
1317 | tmp_array->as = gfc_get_array_spec(); | |
1318 | tmp_array->attr.intent = INTENT_INOUT; | |
1319 | tmp_array->as->type = AS_EXPLICIT; | |
1320 | tmp_array->as->rank = fini->proc_tree->n.sym->formal->sym->as->rank; | |
1321 | ||
1322 | for (i = 0; i < tmp_array->as->rank; i++) | |
1323 | { | |
1324 | gfc_expr *shape_expr; | |
1325 | tmp_array->as->lower[i] = gfc_get_int_expr (gfc_default_integer_kind, | |
1326 | NULL, 1); | |
cbde6c0f | 1327 | /* SIZE (array, dim=i+1, kind=gfc_index_integer_kind). */ |
6838c137 TB |
1328 | shape_expr |
1329 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1330 | gfc_current_locus, 3, | |
1331 | gfc_lval_expr_from_sym (array), | |
1332 | gfc_get_int_expr (gfc_default_integer_kind, | |
1333 | NULL, i+1), | |
1334 | gfc_get_int_expr (gfc_default_integer_kind, | |
cbde6c0f TB |
1335 | NULL, |
1336 | gfc_index_integer_kind)); | |
1337 | shape_expr->ts.kind = gfc_index_integer_kind; | |
29a7d776 TB |
1338 | tmp_array->as->upper[i] = shape_expr; |
1339 | } | |
1340 | gfc_set_sym_referenced (tmp_array); | |
1341 | gfc_commit_symbol (tmp_array); | |
1342 | ||
1343 | /* Create loop. */ | |
1344 | iter = gfc_get_iterator (); | |
1345 | iter->var = gfc_lval_expr_from_sym (idx); | |
1346 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1347 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1348 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1349 | ||
1350 | block = XCNEW (gfc_code); | |
1351 | ns->code = block; | |
1352 | block->op = EXEC_DO; | |
1353 | block->loc = gfc_current_locus; | |
1354 | block->ext.iterator = iter; | |
1355 | block->block = gfc_get_code (); | |
1356 | block->block->op = EXEC_DO; | |
1357 | ||
9e04287b TB |
1358 | /* Offset calculation for the new array: idx * size of type (in bytes). */ |
1359 | offset2 = gfc_get_expr (); | |
9e04287b TB |
1360 | offset2->expr_type = EXPR_OP; |
1361 | offset2->value.op.op = INTRINSIC_TIMES; | |
1362 | offset2->value.op.op1 = gfc_lval_expr_from_sym (idx); | |
1363 | offset2->value.op.op2 = gfc_copy_expr (size_expr); | |
1364 | offset2->ts = byte_stride->ts; | |
1365 | ||
1366 | /* Offset calculation of "array". */ | |
1367 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1368 | byte_stride, rank, block->block, sub_ns); | |
1369 | ||
29a7d776 TB |
1370 | /* Create code for |
1371 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
1372 | + idx * stride, c_ptr), ptr). */ | |
9e04287b TB |
1373 | block2->next = finalization_scalarizer (array, ptr, |
1374 | gfc_lval_expr_from_sym (offset), | |
1375 | sub_ns); | |
1376 | block2 = block2->next; | |
1377 | block2->next = finalization_scalarizer (tmp_array, ptr2, offset2, sub_ns); | |
cbde6c0f | 1378 | block2 = block2->next; |
9e04287b | 1379 | |
29a7d776 | 1380 | /* ptr2 = ptr. */ |
9e04287b | 1381 | block2->next = XCNEW (gfc_code); |
cbde6c0f TB |
1382 | block2 = block2->next; |
1383 | block2->op = EXEC_ASSIGN; | |
1384 | block2->loc = gfc_current_locus; | |
1385 | block2->expr1 = gfc_lval_expr_from_sym (ptr2); | |
1386 | block2->expr2 = gfc_lval_expr_from_sym (ptr); | |
29a7d776 | 1387 | |
9e04287b | 1388 | /* Call now the user's final subroutine. */ |
29a7d776 TB |
1389 | block->next = XCNEW (gfc_code); |
1390 | block = block->next; | |
1391 | block->op = EXEC_CALL; | |
1392 | block->loc = gfc_current_locus; | |
1393 | block->symtree = fini->proc_tree; | |
1394 | block->resolved_sym = fini->proc_tree->n.sym; | |
1395 | block->ext.actual = gfc_get_actual_arglist (); | |
1396 | block->ext.actual->expr = gfc_lval_expr_from_sym (tmp_array); | |
1397 | ||
1398 | if (fini->proc_tree->n.sym->formal->sym->attr.intent == INTENT_IN) | |
1399 | return; | |
1400 | ||
1401 | /* Copy back. */ | |
1402 | ||
1403 | /* Loop. */ | |
1404 | iter = gfc_get_iterator (); | |
1405 | iter->var = gfc_lval_expr_from_sym (idx); | |
1406 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1407 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1408 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1409 | ||
1410 | block->next = XCNEW (gfc_code); | |
1411 | block = block->next; | |
1412 | block->op = EXEC_DO; | |
1413 | block->loc = gfc_current_locus; | |
1414 | block->ext.iterator = iter; | |
1415 | block->block = gfc_get_code (); | |
1416 | block->block->op = EXEC_DO; | |
1417 | ||
9e04287b TB |
1418 | /* Offset calculation of "array". */ |
1419 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1420 | byte_stride, rank, block->block, sub_ns); | |
1421 | ||
29a7d776 TB |
1422 | /* Create code for |
1423 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
1424 | + offset, c_ptr), ptr). */ |
1425 | block2->next = finalization_scalarizer (array, ptr, | |
1426 | gfc_lval_expr_from_sym (offset), | |
1427 | sub_ns); | |
1428 | block2 = block2->next; | |
cbde6c0f TB |
1429 | block2->next = finalization_scalarizer (tmp_array, ptr2, |
1430 | gfc_copy_expr (offset2), sub_ns); | |
9e04287b TB |
1431 | block2 = block2->next; |
1432 | ||
29a7d776 | 1433 | /* ptr = ptr2. */ |
9e04287b TB |
1434 | block2->next = XCNEW (gfc_code); |
1435 | block2->next->op = EXEC_ASSIGN; | |
1436 | block2->next->loc = gfc_current_locus; | |
1437 | block2->next->expr1 = gfc_lval_expr_from_sym (ptr); | |
1438 | block2->next->expr2 = gfc_lval_expr_from_sym (ptr2); | |
29a7d776 TB |
1439 | } |
1440 | ||
1441 | ||
8e54f139 TB |
1442 | /* Generate the finalization/polymorphic freeing wrapper subroutine for the |
1443 | derived type "derived". The function first calls the approriate FINAL | |
1444 | subroutine, then it DEALLOCATEs (finalizes/frees) the allocatable | |
1445 | components (but not the inherited ones). Last, it calls the wrapper | |
1446 | subroutine of the parent. The generated wrapper procedure takes as argument | |
1447 | an assumed-rank array. | |
1448 | If neither allocatable components nor FINAL subroutines exists, the vtab | |
29a7d776 TB |
1449 | will contain a NULL pointer. |
1450 | The generated function has the form | |
1451 | _final(assumed-rank array, stride, skip_corarray) | |
1452 | where the array has to be contiguous (except of the lowest dimension). The | |
1453 | stride (in bytes) is used to allow different sizes for ancestor types by | |
1454 | skipping over the additionally added components in the scalarizer. If | |
1455 | "fini_coarray" is false, coarray components are not finalized to allow for | |
1456 | the correct semantic with intrinsic assignment. */ | |
8e54f139 TB |
1457 | |
1458 | static void | |
1459 | generate_finalization_wrapper (gfc_symbol *derived, gfc_namespace *ns, | |
1460 | const char *tname, gfc_component *vtab_final) | |
1461 | { | |
9e04287b TB |
1462 | gfc_symbol *final, *array, *fini_coarray, *byte_stride, *sizes, *strides; |
1463 | gfc_symbol *ptr = NULL, *idx, *idx2, *is_contiguous, *offset, *nelem; | |
8e54f139 TB |
1464 | gfc_component *comp; |
1465 | gfc_namespace *sub_ns; | |
9e04287b | 1466 | gfc_code *last_code, *block; |
8e54f139 TB |
1467 | char name[GFC_MAX_SYMBOL_LEN+1]; |
1468 | bool finalizable_comp = false; | |
29a7d776 | 1469 | bool expr_null_wrapper = false; |
9e04287b TB |
1470 | gfc_expr *ancestor_wrapper = NULL, *rank; |
1471 | gfc_iterator *iter; | |
8e54f139 TB |
1472 | |
1473 | /* Search for the ancestor's finalizers. */ | |
1474 | if (derived->attr.extension && derived->components | |
1475 | && (!derived->components->ts.u.derived->attr.abstract | |
1476 | || has_finalizer_component (derived))) | |
1477 | { | |
1478 | gfc_symbol *vtab; | |
1479 | gfc_component *comp; | |
1480 | ||
1481 | vtab = gfc_find_derived_vtab (derived->components->ts.u.derived); | |
1482 | for (comp = vtab->ts.u.derived->components; comp; comp = comp->next) | |
1483 | if (comp->name[0] == '_' && comp->name[1] == 'f') | |
1484 | { | |
1485 | ancestor_wrapper = comp->initializer; | |
1486 | break; | |
1487 | } | |
1488 | } | |
1489 | ||
29a7d776 TB |
1490 | /* No wrapper of the ancestor and no own FINAL subroutines and allocatable |
1491 | components: Return a NULL() expression; we defer this a bit to have have | |
1492 | an interface declaration. */ | |
8e54f139 TB |
1493 | if ((!ancestor_wrapper || ancestor_wrapper->expr_type == EXPR_NULL) |
1494 | && !derived->attr.alloc_comp | |
1495 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers) | |
1496 | && !has_finalizer_component (derived)) | |
29a7d776 TB |
1497 | expr_null_wrapper = true; |
1498 | else | |
1499 | /* Check whether there are new allocatable components. */ | |
1500 | for (comp = derived->components; comp; comp = comp->next) | |
1501 | { | |
1502 | if (comp == derived->components && derived->attr.extension | |
1503 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
8e54f139 TB |
1504 | continue; |
1505 | ||
29a7d776 TB |
1506 | if (comp->ts.type != BT_CLASS && !comp->attr.pointer |
1507 | && (comp->attr.allocatable | |
1508 | || (comp->ts.type == BT_DERIVED | |
1509 | && (comp->ts.u.derived->attr.alloc_comp | |
1510 | || has_finalizer_component (comp->ts.u.derived) | |
1511 | || (comp->ts.u.derived->f2k_derived | |
1512 | && comp->ts.u.derived->f2k_derived->finalizers))))) | |
1513 | finalizable_comp = true; | |
1514 | else if (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
1515 | && CLASS_DATA (comp)->attr.allocatable) | |
1516 | finalizable_comp = true; | |
1517 | } | |
8e54f139 TB |
1518 | |
1519 | /* If there is no new finalizer and no new allocatable, return with | |
1520 | an expr to the ancestor's one. */ | |
29a7d776 TB |
1521 | if (!expr_null_wrapper && !finalizable_comp |
1522 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers)) | |
8e54f139 | 1523 | { |
29a7d776 TB |
1524 | gcc_assert (ancestor_wrapper && ancestor_wrapper->ref == NULL |
1525 | && ancestor_wrapper->expr_type == EXPR_VARIABLE); | |
8e54f139 | 1526 | vtab_final->initializer = gfc_copy_expr (ancestor_wrapper); |
29a7d776 | 1527 | vtab_final->ts.interface = vtab_final->initializer->symtree->n.sym; |
8e54f139 TB |
1528 | return; |
1529 | } | |
1530 | ||
1531 | /* We now create a wrapper, which does the following: | |
1532 | 1. Call the suitable finalization subroutine for this type | |
1533 | 2. Loop over all noninherited allocatable components and noninherited | |
1534 | components with allocatable components and DEALLOCATE those; this will | |
1535 | take care of finalizers, coarray deregistering and allocatable | |
1536 | nested components. | |
1537 | 3. Call the ancestor's finalizer. */ | |
1538 | ||
1539 | /* Declare the wrapper function; it takes an assumed-rank array | |
29a7d776 | 1540 | and a VALUE logical as arguments. */ |
8e54f139 TB |
1541 | |
1542 | /* Set up the namespace. */ | |
1543 | sub_ns = gfc_get_namespace (ns, 0); | |
1544 | sub_ns->sibling = ns->contained; | |
29a7d776 TB |
1545 | if (!expr_null_wrapper) |
1546 | ns->contained = sub_ns; | |
8e54f139 TB |
1547 | sub_ns->resolved = 1; |
1548 | ||
1549 | /* Set up the procedure symbol. */ | |
1550 | sprintf (name, "__final_%s", tname); | |
1551 | gfc_get_symbol (name, sub_ns, &final); | |
1552 | sub_ns->proc_name = final; | |
1553 | final->attr.flavor = FL_PROCEDURE; | |
29a7d776 TB |
1554 | final->attr.function = 1; |
1555 | final->attr.pure = 0; | |
1556 | final->result = final; | |
1557 | final->ts.type = BT_INTEGER; | |
1558 | final->ts.kind = 4; | |
8e54f139 | 1559 | final->attr.artificial = 1; |
29a7d776 | 1560 | final->attr.if_source = expr_null_wrapper ? IFSRC_IFBODY : IFSRC_DECL; |
8e54f139 TB |
1561 | if (ns->proc_name->attr.flavor == FL_MODULE) |
1562 | final->module = ns->proc_name->name; | |
1563 | gfc_set_sym_referenced (final); | |
29a7d776 | 1564 | gfc_commit_symbol (final); |
8e54f139 TB |
1565 | |
1566 | /* Set up formal argument. */ | |
1567 | gfc_get_symbol ("array", sub_ns, &array); | |
1568 | array->ts.type = BT_DERIVED; | |
1569 | array->ts.u.derived = derived; | |
1570 | array->attr.flavor = FL_VARIABLE; | |
1571 | array->attr.dummy = 1; | |
1572 | array->attr.contiguous = 1; | |
1573 | array->attr.dimension = 1; | |
1574 | array->attr.artificial = 1; | |
1575 | array->as = gfc_get_array_spec(); | |
1576 | array->as->type = AS_ASSUMED_RANK; | |
1577 | array->as->rank = -1; | |
1578 | array->attr.intent = INTENT_INOUT; | |
1579 | gfc_set_sym_referenced (array); | |
1580 | final->formal = gfc_get_formal_arglist (); | |
1581 | final->formal->sym = array; | |
1582 | gfc_commit_symbol (array); | |
1583 | ||
29a7d776 | 1584 | /* Set up formal argument. */ |
9e04287b TB |
1585 | gfc_get_symbol ("byte_stride", sub_ns, &byte_stride); |
1586 | byte_stride->ts.type = BT_INTEGER; | |
1587 | byte_stride->ts.kind = gfc_index_integer_kind; | |
1588 | byte_stride->attr.flavor = FL_VARIABLE; | |
1589 | byte_stride->attr.dummy = 1; | |
1590 | byte_stride->attr.value = 1; | |
1591 | byte_stride->attr.artificial = 1; | |
1592 | gfc_set_sym_referenced (byte_stride); | |
29a7d776 | 1593 | final->formal->next = gfc_get_formal_arglist (); |
9e04287b TB |
1594 | final->formal->next->sym = byte_stride; |
1595 | gfc_commit_symbol (byte_stride); | |
29a7d776 TB |
1596 | |
1597 | /* Set up formal argument. */ | |
1598 | gfc_get_symbol ("fini_coarray", sub_ns, &fini_coarray); | |
1599 | fini_coarray->ts.type = BT_LOGICAL; | |
9e04287b | 1600 | fini_coarray->ts.kind = 1; |
29a7d776 TB |
1601 | fini_coarray->attr.flavor = FL_VARIABLE; |
1602 | fini_coarray->attr.dummy = 1; | |
1603 | fini_coarray->attr.value = 1; | |
1604 | fini_coarray->attr.artificial = 1; | |
1605 | gfc_set_sym_referenced (fini_coarray); | |
1606 | final->formal->next->next = gfc_get_formal_arglist (); | |
1607 | final->formal->next->next->sym = fini_coarray; | |
1608 | gfc_commit_symbol (fini_coarray); | |
1609 | ||
1610 | /* Return with a NULL() expression but with an interface which has | |
1611 | the formal arguments. */ | |
1612 | if (expr_null_wrapper) | |
1613 | { | |
1614 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1615 | vtab_final->ts.interface = final; | |
1616 | return; | |
1617 | } | |
1618 | ||
9e04287b TB |
1619 | /* Local variables. */ |
1620 | ||
1621 | gfc_get_symbol ("idx", sub_ns, &idx); | |
1622 | idx->ts.type = BT_INTEGER; | |
1623 | idx->ts.kind = gfc_index_integer_kind; | |
1624 | idx->attr.flavor = FL_VARIABLE; | |
1625 | idx->attr.artificial = 1; | |
1626 | gfc_set_sym_referenced (idx); | |
1627 | gfc_commit_symbol (idx); | |
1628 | ||
1629 | gfc_get_symbol ("idx2", sub_ns, &idx2); | |
1630 | idx2->ts.type = BT_INTEGER; | |
1631 | idx2->ts.kind = gfc_index_integer_kind; | |
1632 | idx2->attr.flavor = FL_VARIABLE; | |
1633 | idx2->attr.artificial = 1; | |
1634 | gfc_set_sym_referenced (idx2); | |
1635 | gfc_commit_symbol (idx2); | |
1636 | ||
1637 | gfc_get_symbol ("offset", sub_ns, &offset); | |
1638 | offset->ts.type = BT_INTEGER; | |
1639 | offset->ts.kind = gfc_index_integer_kind; | |
1640 | offset->attr.flavor = FL_VARIABLE; | |
1641 | offset->attr.artificial = 1; | |
1642 | gfc_set_sym_referenced (offset); | |
1643 | gfc_commit_symbol (offset); | |
1644 | ||
1645 | /* Create RANK expression. */ | |
6838c137 TB |
1646 | rank = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_RANK, "rank", |
1647 | gfc_current_locus, 1, | |
1648 | gfc_lval_expr_from_sym (array)); | |
16023efc TB |
1649 | if (rank->ts.kind != idx->ts.kind) |
1650 | gfc_convert_type_warn (rank, &idx->ts, 2, 0); | |
9e04287b TB |
1651 | |
1652 | /* Create is_contiguous variable. */ | |
1653 | gfc_get_symbol ("is_contiguous", sub_ns, &is_contiguous); | |
1654 | is_contiguous->ts.type = BT_LOGICAL; | |
1655 | is_contiguous->ts.kind = gfc_default_logical_kind; | |
1656 | is_contiguous->attr.flavor = FL_VARIABLE; | |
1657 | is_contiguous->attr.artificial = 1; | |
1658 | gfc_set_sym_referenced (is_contiguous); | |
1659 | gfc_commit_symbol (is_contiguous); | |
1660 | ||
1661 | /* Create "sizes(0..rank)" variable, which contains the multiplied | |
1662 | up extent of the dimensions, i.e. sizes(0) = 1, sizes(1) = extent(dim=1), | |
1663 | sizes(2) = sizes(1) * extent(dim=2) etc. */ | |
1664 | gfc_get_symbol ("sizes", sub_ns, &sizes); | |
1665 | sizes->ts.type = BT_INTEGER; | |
1666 | sizes->ts.kind = gfc_index_integer_kind; | |
1667 | sizes->attr.flavor = FL_VARIABLE; | |
1668 | sizes->attr.dimension = 1; | |
1669 | sizes->attr.artificial = 1; | |
1670 | sizes->as = gfc_get_array_spec(); | |
1671 | sizes->attr.intent = INTENT_INOUT; | |
1672 | sizes->as->type = AS_EXPLICIT; | |
1673 | sizes->as->rank = 1; | |
1674 | sizes->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1675 | sizes->as->upper[0] = gfc_copy_expr (rank); | |
1676 | gfc_set_sym_referenced (sizes); | |
1677 | gfc_commit_symbol (sizes); | |
1678 | ||
1679 | /* Create "strides(1..rank)" variable, which contains the strides per | |
1680 | dimension. */ | |
1681 | gfc_get_symbol ("strides", sub_ns, &strides); | |
1682 | strides->ts.type = BT_INTEGER; | |
1683 | strides->ts.kind = gfc_index_integer_kind; | |
1684 | strides->attr.flavor = FL_VARIABLE; | |
1685 | strides->attr.dimension = 1; | |
1686 | strides->attr.artificial = 1; | |
1687 | strides->as = gfc_get_array_spec(); | |
1688 | strides->attr.intent = INTENT_INOUT; | |
1689 | strides->as->type = AS_EXPLICIT; | |
1690 | strides->as->rank = 1; | |
1691 | strides->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1692 | strides->as->upper[0] = gfc_copy_expr (rank); | |
1693 | gfc_set_sym_referenced (strides); | |
1694 | gfc_commit_symbol (strides); | |
1695 | ||
29a7d776 TB |
1696 | |
1697 | /* Set return value to 0. */ | |
1698 | last_code = XCNEW (gfc_code); | |
1699 | last_code->op = EXEC_ASSIGN; | |
1700 | last_code->loc = gfc_current_locus; | |
1701 | last_code->expr1 = gfc_lval_expr_from_sym (final); | |
1702 | last_code->expr2 = gfc_get_int_expr (4, NULL, 0); | |
1703 | sub_ns->code = last_code; | |
1704 | ||
9e04287b TB |
1705 | /* Set: is_contiguous = .true. */ |
1706 | last_code->next = XCNEW (gfc_code); | |
1707 | last_code = last_code->next; | |
1708 | last_code->op = EXEC_ASSIGN; | |
1709 | last_code->loc = gfc_current_locus; | |
1710 | last_code->expr1 = gfc_lval_expr_from_sym (is_contiguous); | |
1711 | last_code->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1712 | &gfc_current_locus, true); | |
1713 | ||
1714 | /* Set: sizes(0) = 1. */ | |
1715 | last_code->next = XCNEW (gfc_code); | |
1716 | last_code = last_code->next; | |
1717 | last_code->op = EXEC_ASSIGN; | |
1718 | last_code->loc = gfc_current_locus; | |
1719 | last_code->expr1 = gfc_lval_expr_from_sym (sizes); | |
1720 | last_code->expr1->ref = gfc_get_ref (); | |
1721 | last_code->expr1->ref->type = REF_ARRAY; | |
1722 | last_code->expr1->ref->u.ar.type = AR_ELEMENT; | |
1723 | last_code->expr1->ref->u.ar.dimen = 1; | |
1724 | last_code->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1725 | last_code->expr1->ref->u.ar.start[0] | |
1726 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1727 | last_code->expr1->ref->u.ar.as = sizes->as; | |
1728 | last_code->expr2 = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); | |
1729 | ||
1730 | /* Create: | |
1731 | DO idx = 1, rank | |
1732 | strides(idx) = _F._stride (array, dim=idx) | |
1733 | sizes(idx) = sizes(i-1) * size(array, dim=idx, kind=index_kind) | |
524af0d6 | 1734 | if (strides (idx) /= sizes(i-1)) is_contiguous = .false. |
9e04287b TB |
1735 | END DO. */ |
1736 | ||
1737 | /* Create loop. */ | |
1738 | iter = gfc_get_iterator (); | |
1739 | iter->var = gfc_lval_expr_from_sym (idx); | |
1740 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1741 | iter->end = gfc_copy_expr (rank); | |
1742 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1743 | last_code->next = XCNEW (gfc_code); | |
1744 | last_code = last_code->next; | |
1745 | last_code->op = EXEC_DO; | |
1746 | last_code->loc = gfc_current_locus; | |
1747 | last_code->ext.iterator = iter; | |
1748 | last_code->block = gfc_get_code (); | |
1749 | last_code->block->op = EXEC_DO; | |
1750 | ||
1751 | /* strides(idx) = _F._stride(array,dim=idx). */ | |
1752 | last_code->block->next = XCNEW (gfc_code); | |
1753 | block = last_code->block->next; | |
1754 | block->op = EXEC_ASSIGN; | |
1755 | block->loc = gfc_current_locus; | |
1756 | ||
1757 | block->expr1 = gfc_lval_expr_from_sym (strides); | |
1758 | block->expr1->ref = gfc_get_ref (); | |
1759 | block->expr1->ref->type = REF_ARRAY; | |
1760 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1761 | block->expr1->ref->u.ar.dimen = 1; | |
1762 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1763 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1764 | block->expr1->ref->u.ar.as = strides->as; | |
1765 | ||
6838c137 TB |
1766 | block->expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STRIDE, "stride", |
1767 | gfc_current_locus, 2, | |
1768 | gfc_lval_expr_from_sym (array), | |
1769 | gfc_lval_expr_from_sym (idx)); | |
9e04287b TB |
1770 | |
1771 | /* sizes(idx) = sizes(idx-1) * size(array,dim=idx, kind=index_kind). */ | |
1772 | block->next = XCNEW (gfc_code); | |
1773 | block = block->next; | |
1774 | block->op = EXEC_ASSIGN; | |
1775 | block->loc = gfc_current_locus; | |
1776 | ||
1777 | /* sizes(idx) = ... */ | |
1778 | block->expr1 = gfc_lval_expr_from_sym (sizes); | |
1779 | block->expr1->ref = gfc_get_ref (); | |
1780 | block->expr1->ref->type = REF_ARRAY; | |
1781 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1782 | block->expr1->ref->u.ar.dimen = 1; | |
1783 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1784 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1785 | block->expr1->ref->u.ar.as = sizes->as; | |
1786 | ||
1787 | block->expr2 = gfc_get_expr (); | |
1788 | block->expr2->expr_type = EXPR_OP; | |
1789 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1790 | ||
1791 | /* sizes(idx-1). */ | |
1792 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); | |
1793 | block->expr2->value.op.op1->ref = gfc_get_ref (); | |
1794 | block->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1795 | block->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
1796 | block->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1797 | block->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1798 | block->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1799 | block->expr2->value.op.op1->ref->u.ar.start[0] = gfc_get_expr (); | |
1800 | block->expr2->value.op.op1->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1801 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1802 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1 | |
1803 | = gfc_lval_expr_from_sym (idx); | |
1804 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op2 | |
1805 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1806 | block->expr2->value.op.op1->ref->u.ar.start[0]->ts | |
1807 | = block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1->ts; | |
1808 | ||
1809 | /* size(array, dim=idx, kind=index_kind). */ | |
6838c137 TB |
1810 | block->expr2->value.op.op2 |
1811 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1812 | gfc_current_locus, 3, | |
1813 | gfc_lval_expr_from_sym (array), | |
1814 | gfc_lval_expr_from_sym (idx), | |
1815 | gfc_get_int_expr (gfc_index_integer_kind, | |
cbde6c0f TB |
1816 | NULL, |
1817 | gfc_index_integer_kind)); | |
1818 | block->expr2->value.op.op2->ts.kind = gfc_index_integer_kind; | |
9e04287b TB |
1819 | block->expr2->ts = idx->ts; |
1820 | ||
524af0d6 | 1821 | /* if (strides (idx) /= sizes(idx-1)) is_contiguous = .false. */ |
9e04287b TB |
1822 | block->next = XCNEW (gfc_code); |
1823 | block = block->next; | |
1824 | block->loc = gfc_current_locus; | |
1825 | block->op = EXEC_IF; | |
1826 | ||
1827 | block->block = XCNEW (gfc_code); | |
1828 | block = block->block; | |
1829 | block->loc = gfc_current_locus; | |
1830 | block->op = EXEC_IF; | |
1831 | ||
1832 | /* if condition: strides(idx) /= sizes(idx-1). */ | |
1833 | block->expr1 = gfc_get_expr (); | |
1834 | block->expr1->ts.type = BT_LOGICAL; | |
1835 | block->expr1->ts.kind = gfc_default_logical_kind; | |
1836 | block->expr1->expr_type = EXPR_OP; | |
1837 | block->expr1->where = gfc_current_locus; | |
1838 | block->expr1->value.op.op = INTRINSIC_NE; | |
1839 | ||
1840 | block->expr1->value.op.op1 = gfc_lval_expr_from_sym (strides); | |
1841 | block->expr1->value.op.op1->ref = gfc_get_ref (); | |
1842 | block->expr1->value.op.op1->ref->type = REF_ARRAY; | |
1843 | block->expr1->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1844 | block->expr1->value.op.op1->ref->u.ar.dimen = 1; | |
1845 | block->expr1->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1846 | block->expr1->value.op.op1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1847 | block->expr1->value.op.op1->ref->u.ar.as = strides->as; | |
1848 | ||
1849 | block->expr1->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1850 | block->expr1->value.op.op2->ref = gfc_get_ref (); | |
1851 | block->expr1->value.op.op2->ref->type = REF_ARRAY; | |
1852 | block->expr1->value.op.op2->ref->u.ar.as = sizes->as; | |
1853 | block->expr1->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1854 | block->expr1->value.op.op2->ref->u.ar.dimen = 1; | |
1855 | block->expr1->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1856 | block->expr1->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1857 | block->expr1->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1858 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1859 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1860 | = gfc_lval_expr_from_sym (idx); | |
1861 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1862 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1863 | block->expr1->value.op.op2->ref->u.ar.start[0]->ts | |
1864 | = block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1865 | ||
1866 | /* if body: is_contiguous = .false. */ | |
1867 | block->next = XCNEW (gfc_code); | |
1868 | block = block->next; | |
1869 | block->op = EXEC_ASSIGN; | |
1870 | block->loc = gfc_current_locus; | |
1871 | block->expr1 = gfc_lval_expr_from_sym (is_contiguous); | |
1872 | block->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1873 | &gfc_current_locus, false); | |
1874 | ||
8e54f139 TB |
1875 | /* Obtain the size (number of elements) of "array" MINUS ONE, |
1876 | which is used in the scalarization. */ | |
1877 | gfc_get_symbol ("nelem", sub_ns, &nelem); | |
1878 | nelem->ts.type = BT_INTEGER; | |
1879 | nelem->ts.kind = gfc_index_integer_kind; | |
1880 | nelem->attr.flavor = FL_VARIABLE; | |
1881 | nelem->attr.artificial = 1; | |
1882 | gfc_set_sym_referenced (nelem); | |
1883 | gfc_commit_symbol (nelem); | |
1884 | ||
9e04287b | 1885 | /* nelem = sizes (rank) - 1. */ |
29a7d776 TB |
1886 | last_code->next = XCNEW (gfc_code); |
1887 | last_code = last_code->next; | |
8e54f139 TB |
1888 | last_code->op = EXEC_ASSIGN; |
1889 | last_code->loc = gfc_current_locus; | |
1890 | ||
1891 | last_code->expr1 = gfc_lval_expr_from_sym (nelem); | |
1892 | ||
1893 | last_code->expr2 = gfc_get_expr (); | |
1894 | last_code->expr2->expr_type = EXPR_OP; | |
1895 | last_code->expr2->value.op.op = INTRINSIC_MINUS; | |
1896 | last_code->expr2->value.op.op2 | |
1897 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1898 | last_code->expr2->ts = last_code->expr2->value.op.op2->ts; | |
1899 | ||
9e04287b TB |
1900 | last_code->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1901 | last_code->expr2->value.op.op1->ref = gfc_get_ref (); | |
1902 | last_code->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1903 | last_code->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1904 | last_code->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1905 | last_code->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1906 | last_code->expr2->value.op.op1->ref->u.ar.start[0] = gfc_copy_expr (rank); | |
1907 | last_code->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
8e54f139 TB |
1908 | |
1909 | /* Call final subroutines. We now generate code like: | |
1910 | use iso_c_binding | |
1911 | integer, pointer :: ptr | |
1912 | type(c_ptr) :: cptr | |
1913 | integer(c_intptr_t) :: i, addr | |
1914 | ||
1915 | select case (rank (array)) | |
1916 | case (3) | |
29a7d776 | 1917 | ! If needed, the array is packed |
8e54f139 TB |
1918 | call final_rank3 (array) |
1919 | case default: | |
1920 | do i = 0, size (array)-1 | |
29a7d776 | 1921 | addr = transfer (c_loc (array), addr) + i * stride |
8e54f139 TB |
1922 | call c_f_pointer (transfer (addr, cptr), ptr) |
1923 | call elemental_final (ptr) | |
1924 | end do | |
1925 | end select */ | |
1926 | ||
1927 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
1928 | { | |
1929 | gfc_finalizer *fini, *fini_elem = NULL; | |
29a7d776 TB |
1930 | |
1931 | gfc_get_symbol ("ptr", sub_ns, &ptr); | |
1932 | ptr->ts.type = BT_DERIVED; | |
1933 | ptr->ts.u.derived = derived; | |
1934 | ptr->attr.flavor = FL_VARIABLE; | |
1935 | ptr->attr.pointer = 1; | |
1936 | ptr->attr.artificial = 1; | |
1937 | gfc_set_sym_referenced (ptr); | |
1938 | gfc_commit_symbol (ptr); | |
1939 | ||
8e54f139 TB |
1940 | /* SELECT CASE (RANK (array)). */ |
1941 | last_code->next = XCNEW (gfc_code); | |
1942 | last_code = last_code->next; | |
1943 | last_code->op = EXEC_SELECT; | |
1944 | last_code->loc = gfc_current_locus; | |
9e04287b TB |
1945 | last_code->expr1 = gfc_copy_expr (rank); |
1946 | block = NULL; | |
8e54f139 TB |
1947 | |
1948 | for (fini = derived->f2k_derived->finalizers; fini; fini = fini->next) | |
1949 | { | |
1950 | if (fini->proc_tree->n.sym->attr.elemental) | |
1951 | { | |
1952 | fini_elem = fini; | |
1953 | continue; | |
1954 | } | |
1955 | ||
1956 | /* CASE (fini_rank). */ | |
1957 | if (block) | |
1958 | { | |
1959 | block->block = XCNEW (gfc_code); | |
1960 | block = block->block; | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | block = XCNEW (gfc_code); | |
1965 | last_code->block = block; | |
1966 | } | |
1967 | block->loc = gfc_current_locus; | |
1968 | block->op = EXEC_SELECT; | |
1969 | block->ext.block.case_list = gfc_get_case (); | |
1970 | block->ext.block.case_list->where = gfc_current_locus; | |
1971 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
1972 | block->ext.block.case_list->low | |
1973 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, | |
1974 | fini->proc_tree->n.sym->formal->sym->as->rank); | |
1975 | else | |
1976 | block->ext.block.case_list->low | |
1977 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); | |
1978 | block->ext.block.case_list->high | |
cbde6c0f | 1979 | = gfc_copy_expr (block->ext.block.case_list->low); |
8e54f139 | 1980 | |
29a7d776 TB |
1981 | /* CALL fini_rank (array) - possibly with packing. */ |
1982 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
9e04287b | 1983 | finalizer_insert_packed_call (block, fini, array, byte_stride, |
6838c137 | 1984 | idx, ptr, nelem, strides, |
9e04287b TB |
1985 | sizes, idx2, offset, is_contiguous, |
1986 | rank, sub_ns); | |
29a7d776 TB |
1987 | else |
1988 | { | |
1989 | block->next = XCNEW (gfc_code); | |
1990 | block->next->op = EXEC_CALL; | |
1991 | block->next->loc = gfc_current_locus; | |
1992 | block->next->symtree = fini->proc_tree; | |
1993 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1994 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1995 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
1996 | } | |
8e54f139 TB |
1997 | } |
1998 | ||
1999 | /* Elemental call - scalarized. */ | |
2000 | if (fini_elem) | |
2001 | { | |
8e54f139 TB |
2002 | /* CASE DEFAULT. */ |
2003 | if (block) | |
2004 | { | |
2005 | block->block = XCNEW (gfc_code); | |
2006 | block = block->block; | |
2007 | } | |
2008 | else | |
2009 | { | |
2010 | block = XCNEW (gfc_code); | |
2011 | last_code->block = block; | |
2012 | } | |
2013 | block->loc = gfc_current_locus; | |
2014 | block->op = EXEC_SELECT; | |
2015 | block->ext.block.case_list = gfc_get_case (); | |
2016 | ||
8e54f139 TB |
2017 | /* Create loop. */ |
2018 | iter = gfc_get_iterator (); | |
2019 | iter->var = gfc_lval_expr_from_sym (idx); | |
2020 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2021 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2022 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
2023 | block->next = XCNEW (gfc_code); | |
2024 | block = block->next; | |
2025 | block->op = EXEC_DO; | |
2026 | block->loc = gfc_current_locus; | |
2027 | block->ext.iterator = iter; | |
2028 | block->block = gfc_get_code (); | |
2029 | block->block->op = EXEC_DO; | |
2030 | ||
9e04287b TB |
2031 | /* Offset calculation. */ |
2032 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2033 | byte_stride, rank, block->block, | |
2034 | sub_ns); | |
2035 | ||
8e54f139 TB |
2036 | /* Create code for |
2037 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
2038 | + offset, c_ptr), ptr). */ |
2039 | block->next | |
2040 | = finalization_scalarizer (array, ptr, | |
2041 | gfc_lval_expr_from_sym (offset), | |
2042 | sub_ns); | |
2043 | block = block->next; | |
8e54f139 TB |
2044 | |
2045 | /* CALL final_elemental (array). */ | |
2046 | block->next = XCNEW (gfc_code); | |
2047 | block = block->next; | |
2048 | block->op = EXEC_CALL; | |
2049 | block->loc = gfc_current_locus; | |
2050 | block->symtree = fini_elem->proc_tree; | |
2051 | block->resolved_sym = fini_elem->proc_sym; | |
2052 | block->ext.actual = gfc_get_actual_arglist (); | |
2053 | block->ext.actual->expr = gfc_lval_expr_from_sym (ptr); | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | /* Finalize and deallocate allocatable components. The same manual | |
2058 | scalarization is used as above. */ | |
2059 | ||
2060 | if (finalizable_comp) | |
2061 | { | |
2062 | gfc_symbol *stat; | |
2063 | gfc_code *block = NULL; | |
8e54f139 TB |
2064 | |
2065 | if (!ptr) | |
2066 | { | |
2067 | gfc_get_symbol ("ptr", sub_ns, &ptr); | |
2068 | ptr->ts.type = BT_DERIVED; | |
2069 | ptr->ts.u.derived = derived; | |
2070 | ptr->attr.flavor = FL_VARIABLE; | |
2071 | ptr->attr.pointer = 1; | |
2072 | ptr->attr.artificial = 1; | |
2073 | gfc_set_sym_referenced (ptr); | |
2074 | gfc_commit_symbol (ptr); | |
2075 | } | |
2076 | ||
2077 | gfc_get_symbol ("ignore", sub_ns, &stat); | |
2078 | stat->attr.flavor = FL_VARIABLE; | |
2079 | stat->attr.artificial = 1; | |
2080 | stat->ts.type = BT_INTEGER; | |
2081 | stat->ts.kind = gfc_default_integer_kind; | |
2082 | gfc_set_sym_referenced (stat); | |
2083 | gfc_commit_symbol (stat); | |
2084 | ||
2085 | /* Create loop. */ | |
2086 | iter = gfc_get_iterator (); | |
2087 | iter->var = gfc_lval_expr_from_sym (idx); | |
2088 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2089 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2090 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
2091 | last_code->next = XCNEW (gfc_code); | |
2092 | last_code = last_code->next; | |
2093 | last_code->op = EXEC_DO; | |
2094 | last_code->loc = gfc_current_locus; | |
2095 | last_code->ext.iterator = iter; | |
2096 | last_code->block = gfc_get_code (); | |
2097 | last_code->block->op = EXEC_DO; | |
2098 | ||
9e04287b TB |
2099 | /* Offset calculation. */ |
2100 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2101 | byte_stride, rank, last_code->block, | |
2102 | sub_ns); | |
2103 | ||
8e54f139 TB |
2104 | /* Create code for |
2105 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
29a7d776 | 2106 | + idx * stride, c_ptr), ptr). */ |
9e04287b TB |
2107 | block->next = finalization_scalarizer (array, ptr, |
2108 | gfc_lval_expr_from_sym(offset), | |
2109 | sub_ns); | |
2110 | block = block->next; | |
8e54f139 TB |
2111 | |
2112 | for (comp = derived->components; comp; comp = comp->next) | |
2113 | { | |
2114 | if (comp == derived->components && derived->attr.extension | |
2115 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2116 | continue; | |
2117 | ||
2118 | finalize_component (gfc_lval_expr_from_sym (ptr), derived, comp, | |
29a7d776 | 2119 | stat, fini_coarray, &block); |
8e54f139 TB |
2120 | if (!last_code->block->next) |
2121 | last_code->block->next = block; | |
2122 | } | |
2123 | ||
2124 | } | |
2125 | ||
2126 | /* Call the finalizer of the ancestor. */ | |
2127 | if (ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2128 | { | |
2129 | last_code->next = XCNEW (gfc_code); | |
2130 | last_code = last_code->next; | |
2131 | last_code->op = EXEC_CALL; | |
2132 | last_code->loc = gfc_current_locus; | |
2133 | last_code->symtree = ancestor_wrapper->symtree; | |
2134 | last_code->resolved_sym = ancestor_wrapper->symtree->n.sym; | |
2135 | ||
2136 | last_code->ext.actual = gfc_get_actual_arglist (); | |
2137 | last_code->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
29a7d776 | 2138 | last_code->ext.actual->next = gfc_get_actual_arglist (); |
9e04287b | 2139 | last_code->ext.actual->next->expr = gfc_lval_expr_from_sym (byte_stride); |
29a7d776 TB |
2140 | last_code->ext.actual->next->next = gfc_get_actual_arglist (); |
2141 | last_code->ext.actual->next->next->expr | |
2142 | = gfc_lval_expr_from_sym (fini_coarray); | |
8e54f139 TB |
2143 | } |
2144 | ||
9e04287b | 2145 | gfc_free_expr (rank); |
8e54f139 TB |
2146 | vtab_final->initializer = gfc_lval_expr_from_sym (final); |
2147 | vtab_final->ts.interface = final; | |
2148 | } | |
2149 | ||
2150 | ||
88ce8031 | 2151 | /* Add procedure pointers for all type-bound procedures to a vtab. */ |
d15bac21 JW |
2152 | |
2153 | static void | |
88ce8031 | 2154 | add_procs_to_declared_vtab (gfc_symbol *derived, gfc_symbol *vtype) |
d15bac21 | 2155 | { |
d15bac21 JW |
2156 | gfc_symbol* super_type; |
2157 | ||
88ce8031 | 2158 | super_type = gfc_get_derived_super_type (derived); |
d15bac21 | 2159 | |
88ce8031 | 2160 | if (super_type && (super_type != derived)) |
d15bac21 | 2161 | { |
88ce8031 JW |
2162 | /* Make sure that the PPCs appear in the same order as in the parent. */ |
2163 | copy_vtab_proc_comps (super_type, vtype); | |
1d0134b3 | 2164 | /* Only needed to get the PPC initializers right. */ |
88ce8031 JW |
2165 | add_procs_to_declared_vtab (super_type, vtype); |
2166 | } | |
d15bac21 | 2167 | |
88ce8031 JW |
2168 | if (derived->f2k_derived && derived->f2k_derived->tb_sym_root) |
2169 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_sym_root, vtype); | |
d15bac21 | 2170 | |
88ce8031 JW |
2171 | if (derived->f2k_derived && derived->f2k_derived->tb_uop_root) |
2172 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_uop_root, vtype); | |
d15bac21 JW |
2173 | } |
2174 | ||
2175 | ||
29a7d776 | 2176 | /* Find or generate the symbol for a derived type's vtab. */ |
d15bac21 JW |
2177 | |
2178 | gfc_symbol * | |
88ce8031 | 2179 | gfc_find_derived_vtab (gfc_symbol *derived) |
d15bac21 JW |
2180 | { |
2181 | gfc_namespace *ns; | |
50f30801 | 2182 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL, *def_init = NULL; |
611c64f0 | 2183 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
c49ea23d | 2184 | |
8b704316 | 2185 | /* Find the top-level namespace. */ |
e10f52d0 | 2186 | for (ns = gfc_current_ns; ns; ns = ns->parent) |
d15bac21 JW |
2187 | if (!ns->parent) |
2188 | break; | |
2189 | ||
e10f52d0 | 2190 | /* If the type is a class container, use the underlying derived type. */ |
8b704316 | 2191 | if (!derived->attr.unlimited_polymorphic && derived->attr.is_class) |
e10f52d0 | 2192 | derived = gfc_get_derived_super_type (derived); |
8b704316 | 2193 | |
d15bac21 JW |
2194 | if (ns) |
2195 | { | |
4fa02692 | 2196 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; |
29a7d776 | 2197 | |
4fa02692 | 2198 | get_unique_hashed_string (tname, derived); |
b04533af | 2199 | sprintf (name, "__vtab_%s", tname); |
611c64f0 JW |
2200 | |
2201 | /* Look for the vtab symbol in various namespaces. */ | |
2202 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
2203 | if (vtab == NULL) | |
2204 | gfc_find_symbol (name, ns, 0, &vtab); | |
2205 | if (vtab == NULL) | |
2206 | gfc_find_symbol (name, derived->ns, 0, &vtab); | |
d15bac21 JW |
2207 | |
2208 | if (vtab == NULL) | |
2209 | { | |
2210 | gfc_get_symbol (name, ns, &vtab); | |
2211 | vtab->ts.type = BT_DERIVED; | |
524af0d6 JB |
2212 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
2213 | &gfc_current_locus)) | |
e10f52d0 | 2214 | goto cleanup; |
d15bac21 | 2215 | vtab->attr.target = 1; |
95f5c775 | 2216 | vtab->attr.save = SAVE_IMPLICIT; |
d15bac21 | 2217 | vtab->attr.vtab = 1; |
f3f98a1e | 2218 | vtab->attr.access = ACCESS_PUBLIC; |
d15bac21 | 2219 | gfc_set_sym_referenced (vtab); |
b04533af | 2220 | sprintf (name, "__vtype_%s", tname); |
29a7d776 | 2221 | |
d15bac21 JW |
2222 | gfc_find_symbol (name, ns, 0, &vtype); |
2223 | if (vtype == NULL) | |
2224 | { | |
2225 | gfc_component *c; | |
2226 | gfc_symbol *parent = NULL, *parent_vtab = NULL; | |
2227 | ||
2228 | gfc_get_symbol (name, ns, &vtype); | |
524af0d6 JB |
2229 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
2230 | &gfc_current_locus)) | |
81fb8a48 | 2231 | goto cleanup; |
f3f98a1e | 2232 | vtype->attr.access = ACCESS_PUBLIC; |
611c64f0 | 2233 | vtype->attr.vtype = 1; |
d15bac21 JW |
2234 | gfc_set_sym_referenced (vtype); |
2235 | ||
b04533af | 2236 | /* Add component '_hash'. */ |
524af0d6 | 2237 | if (!gfc_add_component (vtype, "_hash", &c)) |
81fb8a48 | 2238 | goto cleanup; |
d15bac21 JW |
2239 | c->ts.type = BT_INTEGER; |
2240 | c->ts.kind = 4; | |
2241 | c->attr.access = ACCESS_PRIVATE; | |
2242 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2243 | NULL, derived->hash_value); | |
2244 | ||
b04533af | 2245 | /* Add component '_size'. */ |
524af0d6 | 2246 | if (!gfc_add_component (vtype, "_size", &c)) |
81fb8a48 | 2247 | goto cleanup; |
d15bac21 JW |
2248 | c->ts.type = BT_INTEGER; |
2249 | c->ts.kind = 4; | |
2250 | c->attr.access = ACCESS_PRIVATE; | |
2251 | /* Remember the derived type in ts.u.derived, | |
2252 | so that the correct initializer can be set later on | |
2253 | (in gfc_conv_structure). */ | |
2254 | c->ts.u.derived = derived; | |
2255 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2256 | NULL, 0); | |
2257 | ||
b04533af | 2258 | /* Add component _extends. */ |
524af0d6 | 2259 | if (!gfc_add_component (vtype, "_extends", &c)) |
81fb8a48 | 2260 | goto cleanup; |
d15bac21 JW |
2261 | c->attr.pointer = 1; |
2262 | c->attr.access = ACCESS_PRIVATE; | |
8b704316 PT |
2263 | if (!derived->attr.unlimited_polymorphic) |
2264 | parent = gfc_get_derived_super_type (derived); | |
2265 | else | |
2266 | parent = NULL; | |
2267 | ||
d15bac21 JW |
2268 | if (parent) |
2269 | { | |
88ce8031 | 2270 | parent_vtab = gfc_find_derived_vtab (parent); |
d15bac21 JW |
2271 | c->ts.type = BT_DERIVED; |
2272 | c->ts.u.derived = parent_vtab->ts.u.derived; | |
2273 | c->initializer = gfc_get_expr (); | |
2274 | c->initializer->expr_type = EXPR_VARIABLE; | |
2275 | gfc_find_sym_tree (parent_vtab->name, parent_vtab->ns, | |
2276 | 0, &c->initializer->symtree); | |
2277 | } | |
2278 | else | |
2279 | { | |
2280 | c->ts.type = BT_DERIVED; | |
2281 | c->ts.u.derived = vtype; | |
2282 | c->initializer = gfc_get_null_expr (NULL); | |
2283 | } | |
2284 | ||
8b704316 PT |
2285 | if (!derived->attr.unlimited_polymorphic |
2286 | && derived->components == NULL | |
2287 | && !derived->attr.zero_comp) | |
611c64f0 JW |
2288 | { |
2289 | /* At this point an error must have occurred. | |
2290 | Prevent further errors on the vtype components. */ | |
2291 | found_sym = vtab; | |
2292 | goto have_vtype; | |
2293 | } | |
2294 | ||
b04533af | 2295 | /* Add component _def_init. */ |
524af0d6 | 2296 | if (!gfc_add_component (vtype, "_def_init", &c)) |
50f30801 JW |
2297 | goto cleanup; |
2298 | c->attr.pointer = 1; | |
8e54f139 | 2299 | c->attr.artificial = 1; |
50f30801 JW |
2300 | c->attr.access = ACCESS_PRIVATE; |
2301 | c->ts.type = BT_DERIVED; | |
2302 | c->ts.u.derived = derived; | |
8b704316 PT |
2303 | if (derived->attr.unlimited_polymorphic |
2304 | || derived->attr.abstract) | |
611c64f0 | 2305 | c->initializer = gfc_get_null_expr (NULL); |
50f30801 JW |
2306 | else |
2307 | { | |
2308 | /* Construct default initialization variable. */ | |
b04533af | 2309 | sprintf (name, "__def_init_%s", tname); |
50f30801 JW |
2310 | gfc_get_symbol (name, ns, &def_init); |
2311 | def_init->attr.target = 1; | |
8e54f139 | 2312 | def_init->attr.artificial = 1; |
95f5c775 | 2313 | def_init->attr.save = SAVE_IMPLICIT; |
50f30801 | 2314 | def_init->attr.access = ACCESS_PUBLIC; |
22c30bc0 | 2315 | def_init->attr.flavor = FL_VARIABLE; |
50f30801 JW |
2316 | gfc_set_sym_referenced (def_init); |
2317 | def_init->ts.type = BT_DERIVED; | |
2318 | def_init->ts.u.derived = derived; | |
2319 | def_init->value = gfc_default_initializer (&def_init->ts); | |
2320 | ||
2321 | c->initializer = gfc_lval_expr_from_sym (def_init); | |
2322 | } | |
2323 | ||
b04533af | 2324 | /* Add component _copy. */ |
524af0d6 | 2325 | if (!gfc_add_component (vtype, "_copy", &c)) |
611c64f0 JW |
2326 | goto cleanup; |
2327 | c->attr.proc_pointer = 1; | |
2328 | c->attr.access = ACCESS_PRIVATE; | |
2329 | c->tb = XCNEW (gfc_typebound_proc); | |
2330 | c->tb->ppc = 1; | |
8b704316 PT |
2331 | if (derived->attr.unlimited_polymorphic |
2332 | || derived->attr.abstract) | |
611c64f0 JW |
2333 | c->initializer = gfc_get_null_expr (NULL); |
2334 | else | |
2335 | { | |
2336 | /* Set up namespace. */ | |
2337 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2338 | sub_ns->sibling = ns->contained; | |
2339 | ns->contained = sub_ns; | |
2340 | sub_ns->resolved = 1; | |
2341 | /* Set up procedure symbol. */ | |
b04533af | 2342 | sprintf (name, "__copy_%s", tname); |
611c64f0 JW |
2343 | gfc_get_symbol (name, sub_ns, ©); |
2344 | sub_ns->proc_name = copy; | |
2345 | copy->attr.flavor = FL_PROCEDURE; | |
cf651ca2 | 2346 | copy->attr.subroutine = 1; |
0b73eb81 | 2347 | copy->attr.pure = 1; |
8e54f139 | 2348 | copy->attr.artificial = 1; |
611c64f0 | 2349 | copy->attr.if_source = IFSRC_DECL; |
c49ea23d PT |
2350 | /* This is elemental so that arrays are automatically |
2351 | treated correctly by the scalarizer. */ | |
2352 | copy->attr.elemental = 1; | |
844ba455 JW |
2353 | if (ns->proc_name->attr.flavor == FL_MODULE) |
2354 | copy->module = ns->proc_name->name; | |
611c64f0 JW |
2355 | gfc_set_sym_referenced (copy); |
2356 | /* Set up formal arguments. */ | |
2357 | gfc_get_symbol ("src", sub_ns, &src); | |
2358 | src->ts.type = BT_DERIVED; | |
2359 | src->ts.u.derived = derived; | |
2360 | src->attr.flavor = FL_VARIABLE; | |
2361 | src->attr.dummy = 1; | |
8e54f139 TB |
2362 | src->attr.artificial = 1; |
2363 | src->attr.intent = INTENT_IN; | |
611c64f0 JW |
2364 | gfc_set_sym_referenced (src); |
2365 | copy->formal = gfc_get_formal_arglist (); | |
2366 | copy->formal->sym = src; | |
2367 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2368 | dst->ts.type = BT_DERIVED; | |
2369 | dst->ts.u.derived = derived; | |
2370 | dst->attr.flavor = FL_VARIABLE; | |
2371 | dst->attr.dummy = 1; | |
8e54f139 | 2372 | dst->attr.artificial = 1; |
16023efc | 2373 | dst->attr.intent = INTENT_INOUT; |
611c64f0 JW |
2374 | gfc_set_sym_referenced (dst); |
2375 | copy->formal->next = gfc_get_formal_arglist (); | |
2376 | copy->formal->next->sym = dst; | |
2377 | /* Set up code. */ | |
2378 | sub_ns->code = gfc_get_code (); | |
2e85ae0d | 2379 | sub_ns->code->op = EXEC_INIT_ASSIGN; |
611c64f0 JW |
2380 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2381 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2382 | /* Set initializer. */ | |
2383 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2384 | c->ts.interface = copy; | |
2385 | } | |
2386 | ||
8e54f139 TB |
2387 | /* Add component _final, which contains a procedure pointer to |
2388 | a wrapper which handles both the freeing of allocatable | |
2389 | components and the calls to finalization subroutines. | |
2390 | Note: The actual wrapper function can only be generated | |
2391 | at resolution time. */ | |
524af0d6 | 2392 | if (!gfc_add_component (vtype, "_final", &c)) |
8e54f139 TB |
2393 | goto cleanup; |
2394 | c->attr.proc_pointer = 1; | |
2395 | c->attr.access = ACCESS_PRIVATE; | |
2396 | c->tb = XCNEW (gfc_typebound_proc); | |
2397 | c->tb->ppc = 1; | |
2398 | generate_finalization_wrapper (derived, ns, tname, c); | |
2399 | ||
50f30801 | 2400 | /* Add procedure pointers for type-bound procedures. */ |
8b704316 PT |
2401 | if (!derived->attr.unlimited_polymorphic) |
2402 | add_procs_to_declared_vtab (derived, vtype); | |
d6cd8711 | 2403 | } |
d15bac21 | 2404 | |
611c64f0 | 2405 | have_vtype: |
d15bac21 JW |
2406 | vtab->ts.u.derived = vtype; |
2407 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2408 | } | |
2409 | } | |
2410 | ||
81fb8a48 MM |
2411 | found_sym = vtab; |
2412 | ||
2413 | cleanup: | |
2414 | /* It is unexpected to have some symbols added at resolution or code | |
2415 | generation time. We commit the changes in order to keep a clean state. */ | |
2416 | if (found_sym) | |
e10f52d0 JW |
2417 | { |
2418 | gfc_commit_symbol (vtab); | |
2419 | if (vtype) | |
2420 | gfc_commit_symbol (vtype); | |
50f30801 JW |
2421 | if (def_init) |
2422 | gfc_commit_symbol (def_init); | |
611c64f0 JW |
2423 | if (copy) |
2424 | gfc_commit_symbol (copy); | |
2425 | if (src) | |
2426 | gfc_commit_symbol (src); | |
2427 | if (dst) | |
2428 | gfc_commit_symbol (dst); | |
e10f52d0 | 2429 | } |
81fb8a48 MM |
2430 | else |
2431 | gfc_undo_symbols (); | |
2432 | ||
2433 | return found_sym; | |
d15bac21 JW |
2434 | } |
2435 | ||
2436 | ||
86035eec TB |
2437 | /* Check if a derived type is finalizable. That is the case if it |
2438 | (1) has a FINAL subroutine or | |
2439 | (2) has a nonpointer nonallocatable component of finalizable type. | |
2440 | If it is finalizable, return an expression containing the | |
2441 | finalization wrapper. */ | |
2442 | ||
2443 | bool | |
2444 | gfc_is_finalizable (gfc_symbol *derived, gfc_expr **final_expr) | |
2445 | { | |
2446 | gfc_symbol *vtab; | |
2447 | gfc_component *c; | |
2448 | ||
2449 | /* (1) Check for FINAL subroutines. */ | |
2450 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2451 | goto yes; | |
2452 | ||
2453 | /* (2) Check for components of finalizable type. */ | |
2454 | for (c = derived->components; c; c = c->next) | |
2455 | if (c->ts.type == BT_DERIVED | |
2456 | && !c->attr.pointer && !c->attr.proc_pointer && !c->attr.allocatable | |
2457 | && gfc_is_finalizable (c->ts.u.derived, NULL)) | |
2458 | goto yes; | |
2459 | ||
2460 | return false; | |
2461 | ||
2462 | yes: | |
2463 | /* Make sure vtab is generated. */ | |
2464 | vtab = gfc_find_derived_vtab (derived); | |
2465 | if (final_expr) | |
2466 | { | |
2467 | /* Return finalizer expression. */ | |
2468 | gfc_component *final; | |
2469 | final = vtab->ts.u.derived->components->next->next->next->next->next; | |
2470 | gcc_assert (strcmp (final->name, "_final") == 0); | |
2471 | gcc_assert (final->initializer | |
2472 | && final->initializer->expr_type != EXPR_NULL); | |
2473 | *final_expr = final->initializer; | |
2474 | } | |
2475 | return true; | |
2476 | } | |
2477 | ||
2478 | ||
8b704316 PT |
2479 | /* Find (or generate) the symbol for an intrinsic type's vtab. This is |
2480 | need to support unlimited polymorphism. */ | |
2481 | ||
2482 | gfc_symbol * | |
2483 | gfc_find_intrinsic_vtab (gfc_typespec *ts) | |
2484 | { | |
2485 | gfc_namespace *ns; | |
adede54c | 2486 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL; |
8b704316 PT |
2487 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
2488 | int charlen = 0; | |
2489 | ||
2490 | if (ts->type == BT_CHARACTER && ts->deferred) | |
2491 | { | |
2492 | gfc_error ("TODO: Deferred character length variable at %C cannot " | |
2493 | "yet be associated with unlimited polymorphic entities"); | |
2494 | return NULL; | |
2495 | } | |
2496 | ||
2497 | if (ts->type == BT_UNKNOWN) | |
2498 | return NULL; | |
2499 | ||
2500 | /* Sometimes the typespec is passed from a single call. */ | |
2501 | if (ts->type == BT_DERIVED) | |
2502 | return gfc_find_derived_vtab (ts->u.derived); | |
2503 | ||
2504 | /* Find the top-level namespace. */ | |
2505 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
2506 | if (!ns->parent) | |
2507 | break; | |
2508 | ||
2509 | if (ts->type == BT_CHARACTER && ts->u.cl && ts->u.cl->length | |
2510 | && ts->u.cl->length->expr_type == EXPR_CONSTANT) | |
2511 | charlen = mpz_get_si (ts->u.cl->length->value.integer); | |
2512 | ||
2513 | if (ns) | |
2514 | { | |
2515 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; | |
2516 | ||
2517 | if (ts->type == BT_CHARACTER) | |
2518 | sprintf (tname, "%s_%d_%d", gfc_basic_typename (ts->type), | |
2519 | charlen, ts->kind); | |
2520 | else | |
2521 | sprintf (tname, "%s_%d_", gfc_basic_typename (ts->type), ts->kind); | |
2522 | ||
2523 | sprintf (name, "__vtab_%s", tname); | |
2524 | ||
2525 | /* Look for the vtab symbol in various namespaces. */ | |
2526 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
2527 | if (vtab == NULL) | |
2528 | gfc_find_symbol (name, ns, 0, &vtab); | |
2529 | ||
2530 | if (vtab == NULL) | |
2531 | { | |
2532 | gfc_get_symbol (name, ns, &vtab); | |
2533 | vtab->ts.type = BT_DERIVED; | |
524af0d6 JB |
2534 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
2535 | &gfc_current_locus)) | |
8b704316 PT |
2536 | goto cleanup; |
2537 | vtab->attr.target = 1; | |
2538 | vtab->attr.save = SAVE_IMPLICIT; | |
2539 | vtab->attr.vtab = 1; | |
2540 | vtab->attr.access = ACCESS_PUBLIC; | |
2541 | gfc_set_sym_referenced (vtab); | |
2542 | sprintf (name, "__vtype_%s", tname); | |
2543 | ||
2544 | gfc_find_symbol (name, ns, 0, &vtype); | |
2545 | if (vtype == NULL) | |
2546 | { | |
2547 | gfc_component *c; | |
2548 | int hash; | |
2549 | gfc_namespace *sub_ns; | |
2550 | gfc_namespace *contained; | |
2551 | ||
2552 | gfc_get_symbol (name, ns, &vtype); | |
524af0d6 JB |
2553 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
2554 | &gfc_current_locus)) | |
8b704316 PT |
2555 | goto cleanup; |
2556 | vtype->attr.access = ACCESS_PUBLIC; | |
2557 | vtype->attr.vtype = 1; | |
2558 | gfc_set_sym_referenced (vtype); | |
2559 | ||
2560 | /* Add component '_hash'. */ | |
524af0d6 | 2561 | if (!gfc_add_component (vtype, "_hash", &c)) |
8b704316 PT |
2562 | goto cleanup; |
2563 | c->ts.type = BT_INTEGER; | |
2564 | c->ts.kind = 4; | |
2565 | c->attr.access = ACCESS_PRIVATE; | |
2566 | hash = gfc_intrinsic_hash_value (ts); | |
2567 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2568 | NULL, hash); | |
2569 | ||
2570 | /* Add component '_size'. */ | |
524af0d6 | 2571 | if (!gfc_add_component (vtype, "_size", &c)) |
8b704316 PT |
2572 | goto cleanup; |
2573 | c->ts.type = BT_INTEGER; | |
2574 | c->ts.kind = 4; | |
2575 | c->attr.access = ACCESS_PRIVATE; | |
2576 | if (ts->type == BT_CHARACTER) | |
2577 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2578 | NULL, charlen*ts->kind); | |
2579 | else | |
2580 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2581 | NULL, ts->kind); | |
2582 | ||
2583 | /* Add component _extends. */ | |
524af0d6 | 2584 | if (!gfc_add_component (vtype, "_extends", &c)) |
8b704316 PT |
2585 | goto cleanup; |
2586 | c->attr.pointer = 1; | |
2587 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2588 | c->ts.type = BT_VOID; |
8b704316 PT |
2589 | c->initializer = gfc_get_null_expr (NULL); |
2590 | ||
2591 | /* Add component _def_init. */ | |
524af0d6 | 2592 | if (!gfc_add_component (vtype, "_def_init", &c)) |
8b704316 PT |
2593 | goto cleanup; |
2594 | c->attr.pointer = 1; | |
2595 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2596 | c->ts.type = BT_VOID; |
8b704316 PT |
2597 | c->initializer = gfc_get_null_expr (NULL); |
2598 | ||
2599 | /* Add component _copy. */ | |
524af0d6 | 2600 | if (!gfc_add_component (vtype, "_copy", &c)) |
8b704316 PT |
2601 | goto cleanup; |
2602 | c->attr.proc_pointer = 1; | |
2603 | c->attr.access = ACCESS_PRIVATE; | |
2604 | c->tb = XCNEW (gfc_typebound_proc); | |
2605 | c->tb->ppc = 1; | |
2606 | ||
2607 | /* Check to see if copy function already exists. Note | |
2608 | that this is only used for characters of different | |
2609 | lengths. */ | |
2610 | contained = ns->contained; | |
2611 | for (; contained; contained = contained->sibling) | |
2612 | if (contained->proc_name | |
2613 | && strcmp (name, contained->proc_name->name) == 0) | |
2614 | { | |
2615 | copy = contained->proc_name; | |
2616 | goto got_char_copy; | |
2617 | } | |
2618 | ||
2619 | /* Set up namespace. */ | |
2620 | sub_ns = gfc_get_namespace (ns, 0); | |
2621 | sub_ns->sibling = ns->contained; | |
2622 | ns->contained = sub_ns; | |
2623 | sub_ns->resolved = 1; | |
2624 | /* Set up procedure symbol. */ | |
2625 | if (ts->type != BT_CHARACTER) | |
2626 | sprintf (name, "__copy_%s", tname); | |
2627 | else | |
2628 | /* __copy is always the same for characters. */ | |
2629 | sprintf (name, "__copy_character_%d", ts->kind); | |
2630 | gfc_get_symbol (name, sub_ns, ©); | |
2631 | sub_ns->proc_name = copy; | |
2632 | copy->attr.flavor = FL_PROCEDURE; | |
2633 | copy->attr.subroutine = 1; | |
2634 | copy->attr.pure = 1; | |
2635 | copy->attr.if_source = IFSRC_DECL; | |
2636 | /* This is elemental so that arrays are automatically | |
2637 | treated correctly by the scalarizer. */ | |
2638 | copy->attr.elemental = 1; | |
2639 | if (ns->proc_name->attr.flavor == FL_MODULE) | |
2640 | copy->module = ns->proc_name->name; | |
2641 | gfc_set_sym_referenced (copy); | |
2642 | /* Set up formal arguments. */ | |
2643 | gfc_get_symbol ("src", sub_ns, &src); | |
2644 | src->ts.type = ts->type; | |
2645 | src->ts.kind = ts->kind; | |
2646 | src->attr.flavor = FL_VARIABLE; | |
2647 | src->attr.dummy = 1; | |
2648 | src->attr.intent = INTENT_IN; | |
2649 | gfc_set_sym_referenced (src); | |
2650 | copy->formal = gfc_get_formal_arglist (); | |
2651 | copy->formal->sym = src; | |
2652 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2653 | dst->ts.type = ts->type; | |
2654 | dst->ts.kind = ts->kind; | |
2655 | dst->attr.flavor = FL_VARIABLE; | |
2656 | dst->attr.dummy = 1; | |
16023efc | 2657 | dst->attr.intent = INTENT_INOUT; |
8b704316 PT |
2658 | gfc_set_sym_referenced (dst); |
2659 | copy->formal->next = gfc_get_formal_arglist (); | |
2660 | copy->formal->next->sym = dst; | |
2661 | /* Set up code. */ | |
2662 | sub_ns->code = gfc_get_code (); | |
2663 | sub_ns->code->op = EXEC_INIT_ASSIGN; | |
2664 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); | |
2665 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2666 | got_char_copy: | |
2667 | /* Set initializer. */ | |
2668 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2669 | c->ts.interface = copy; | |
94241120 TB |
2670 | |
2671 | /* Add component _final. */ | |
524af0d6 | 2672 | if (!gfc_add_component (vtype, "_final", &c)) |
94241120 TB |
2673 | goto cleanup; |
2674 | c->attr.proc_pointer = 1; | |
2675 | c->attr.access = ACCESS_PRIVATE; | |
2676 | c->tb = XCNEW (gfc_typebound_proc); | |
2677 | c->tb->ppc = 1; | |
2678 | c->initializer = gfc_get_null_expr (NULL); | |
8b704316 PT |
2679 | } |
2680 | vtab->ts.u.derived = vtype; | |
2681 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2682 | } | |
2683 | } | |
2684 | ||
2685 | found_sym = vtab; | |
2686 | ||
2687 | cleanup: | |
2688 | /* It is unexpected to have some symbols added at resolution or code | |
2689 | generation time. We commit the changes in order to keep a clean state. */ | |
2690 | if (found_sym) | |
2691 | { | |
2692 | gfc_commit_symbol (vtab); | |
2693 | if (vtype) | |
2694 | gfc_commit_symbol (vtype); | |
8b704316 PT |
2695 | if (copy) |
2696 | gfc_commit_symbol (copy); | |
2697 | if (src) | |
2698 | gfc_commit_symbol (src); | |
2699 | if (dst) | |
2700 | gfc_commit_symbol (dst); | |
2701 | } | |
2702 | else | |
2703 | gfc_undo_symbols (); | |
2704 | ||
2705 | return found_sym; | |
2706 | } | |
2707 | ||
2708 | ||
d15bac21 JW |
2709 | /* General worker function to find either a type-bound procedure or a |
2710 | type-bound user operator. */ | |
2711 | ||
2712 | static gfc_symtree* | |
524af0d6 | 2713 | find_typebound_proc_uop (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2714 | const char* name, bool noaccess, bool uop, |
2715 | locus* where) | |
2716 | { | |
2717 | gfc_symtree* res; | |
2718 | gfc_symtree* root; | |
2719 | ||
d15bac21 JW |
2720 | /* Set default to failure. */ |
2721 | if (t) | |
524af0d6 | 2722 | *t = false; |
d15bac21 | 2723 | |
9b940c6d JW |
2724 | if (derived->f2k_derived) |
2725 | /* Set correct symbol-root. */ | |
2726 | root = (uop ? derived->f2k_derived->tb_uop_root | |
2727 | : derived->f2k_derived->tb_sym_root); | |
2728 | else | |
2729 | return NULL; | |
2730 | ||
d15bac21 JW |
2731 | /* Try to find it in the current type's namespace. */ |
2732 | res = gfc_find_symtree (root, name); | |
2733 | if (res && res->n.tb && !res->n.tb->error) | |
2734 | { | |
2735 | /* We found one. */ | |
2736 | if (t) | |
524af0d6 | 2737 | *t = true; |
d15bac21 JW |
2738 | |
2739 | if (!noaccess && derived->attr.use_assoc | |
2740 | && res->n.tb->access == ACCESS_PRIVATE) | |
2741 | { | |
2742 | if (where) | |
2743 | gfc_error ("'%s' of '%s' is PRIVATE at %L", | |
2744 | name, derived->name, where); | |
2745 | if (t) | |
524af0d6 | 2746 | *t = false; |
d15bac21 JW |
2747 | } |
2748 | ||
2749 | return res; | |
2750 | } | |
2751 | ||
2752 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2753 | if (derived->attr.extension) | |
2754 | { | |
2755 | gfc_symbol* super_type; | |
2756 | super_type = gfc_get_derived_super_type (derived); | |
2757 | gcc_assert (super_type); | |
2758 | ||
2759 | return find_typebound_proc_uop (super_type, t, name, | |
2760 | noaccess, uop, where); | |
2761 | } | |
2762 | ||
2763 | /* Nothing found. */ | |
2764 | return NULL; | |
2765 | } | |
2766 | ||
2767 | ||
2768 | /* Find a type-bound procedure or user operator by name for a derived-type | |
2769 | (looking recursively through the super-types). */ | |
2770 | ||
2771 | gfc_symtree* | |
524af0d6 | 2772 | gfc_find_typebound_proc (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2773 | const char* name, bool noaccess, locus* where) |
2774 | { | |
2775 | return find_typebound_proc_uop (derived, t, name, noaccess, false, where); | |
2776 | } | |
2777 | ||
2778 | gfc_symtree* | |
524af0d6 | 2779 | gfc_find_typebound_user_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2780 | const char* name, bool noaccess, locus* where) |
2781 | { | |
2782 | return find_typebound_proc_uop (derived, t, name, noaccess, true, where); | |
2783 | } | |
2784 | ||
2785 | ||
2786 | /* Find a type-bound intrinsic operator looking recursively through the | |
2787 | super-type hierarchy. */ | |
2788 | ||
2789 | gfc_typebound_proc* | |
524af0d6 | 2790 | gfc_find_typebound_intrinsic_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2791 | gfc_intrinsic_op op, bool noaccess, |
2792 | locus* where) | |
2793 | { | |
2794 | gfc_typebound_proc* res; | |
2795 | ||
2796 | /* Set default to failure. */ | |
2797 | if (t) | |
524af0d6 | 2798 | *t = false; |
d15bac21 JW |
2799 | |
2800 | /* Try to find it in the current type's namespace. */ | |
2801 | if (derived->f2k_derived) | |
2802 | res = derived->f2k_derived->tb_op[op]; | |
8b704316 | 2803 | else |
d15bac21 JW |
2804 | res = NULL; |
2805 | ||
2806 | /* Check access. */ | |
2807 | if (res && !res->error) | |
2808 | { | |
2809 | /* We found one. */ | |
2810 | if (t) | |
524af0d6 | 2811 | *t = true; |
d15bac21 JW |
2812 | |
2813 | if (!noaccess && derived->attr.use_assoc | |
2814 | && res->access == ACCESS_PRIVATE) | |
2815 | { | |
2816 | if (where) | |
2817 | gfc_error ("'%s' of '%s' is PRIVATE at %L", | |
2818 | gfc_op2string (op), derived->name, where); | |
2819 | if (t) | |
524af0d6 | 2820 | *t = false; |
d15bac21 JW |
2821 | } |
2822 | ||
2823 | return res; | |
2824 | } | |
2825 | ||
2826 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2827 | if (derived->attr.extension) | |
2828 | { | |
2829 | gfc_symbol* super_type; | |
2830 | super_type = gfc_get_derived_super_type (derived); | |
2831 | gcc_assert (super_type); | |
2832 | ||
2833 | return gfc_find_typebound_intrinsic_op (super_type, t, op, | |
2834 | noaccess, where); | |
2835 | } | |
2836 | ||
2837 | /* Nothing found. */ | |
2838 | return NULL; | |
2839 | } | |
2840 | ||
2841 | ||
2842 | /* Get a typebound-procedure symtree or create and insert it if not yet | |
2843 | present. This is like a very simplified version of gfc_get_sym_tree for | |
2844 | tbp-symtrees rather than regular ones. */ | |
2845 | ||
2846 | gfc_symtree* | |
2847 | gfc_get_tbp_symtree (gfc_symtree **root, const char *name) | |
2848 | { | |
2849 | gfc_symtree *result; | |
2850 | ||
2851 | result = gfc_find_symtree (*root, name); | |
2852 | if (!result) | |
2853 | { | |
2854 | result = gfc_new_symtree (root, name); | |
2855 | gcc_assert (result); | |
2856 | result->n.tb = NULL; | |
2857 | } | |
2858 | ||
2859 | return result; | |
2860 | } |