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d15bac21 | 1 | /* Implementation of Fortran 2003 Polymorphism. |
15115f7a | 2 | Copyright (C) 2009, 2010, 2011, 2012, 2013 |
d15bac21 | 3 | Free Software Foundation, Inc. |
4fa02692 JW |
4 | Contributed by Paul Richard Thomas <pault@gcc.gnu.org> |
5 | and Janus Weil <janus@gcc.gnu.org> | |
d15bac21 JW |
6 | |
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 3, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | ||
24 | /* class.c -- This file contains the front end functions needed to service | |
25 | the implementation of Fortran 2003 polymorphism and other | |
26 | object-oriented features. */ | |
27 | ||
28 | ||
29 | /* Outline of the internal representation: | |
30 | ||
31 | Each CLASS variable is encapsulated by a class container, which is a | |
32 | structure with two fields: | |
b04533af | 33 | * _data: A pointer to the actual data of the variable. This field has the |
d15bac21 JW |
34 | declared type of the class variable and its attributes |
35 | (pointer/allocatable/dimension/...). | |
b04533af | 36 | * _vptr: A pointer to the vtable entry (see below) of the dynamic type. |
8e54f139 | 37 | |
d15bac21 JW |
38 | For each derived type we set up a "vtable" entry, i.e. a structure with the |
39 | following fields: | |
b04533af JW |
40 | * _hash: A hash value serving as a unique identifier for this type. |
41 | * _size: The size in bytes of the derived type. | |
42 | * _extends: A pointer to the vtable entry of the parent derived type. | |
43 | * _def_init: A pointer to a default initialized variable of this type. | |
44 | * _copy: A procedure pointer to a copying procedure. | |
8e54f139 TB |
45 | * _final: A procedure pointer to a wrapper function, which frees |
46 | allocatable components and calls FINAL subroutines. | |
47 | ||
611c64f0 JW |
48 | After these follow procedure pointer components for the specific |
49 | type-bound procedures. */ | |
d15bac21 JW |
50 | |
51 | ||
52 | #include "config.h" | |
53 | #include "system.h" | |
953bee7c | 54 | #include "coretypes.h" |
d15bac21 JW |
55 | #include "gfortran.h" |
56 | #include "constructor.h" | |
57 | ||
37da591f MM |
58 | /* Inserts a derived type component reference in a data reference chain. |
59 | TS: base type of the ref chain so far, in which we will pick the component | |
60 | REF: the address of the GFC_REF pointer to update | |
61 | NAME: name of the component to insert | |
62 | Note that component insertion makes sense only if we are at the end of | |
63 | the chain (*REF == NULL) or if we are adding a missing "_data" component | |
64 | to access the actual contents of a class object. */ | |
65 | ||
66 | static void | |
67 | insert_component_ref (gfc_typespec *ts, gfc_ref **ref, const char * const name) | |
68 | { | |
69 | gfc_symbol *type_sym; | |
70 | gfc_ref *new_ref; | |
71 | ||
72 | gcc_assert (ts->type == BT_DERIVED || ts->type == BT_CLASS); | |
73 | type_sym = ts->u.derived; | |
74 | ||
75 | new_ref = gfc_get_ref (); | |
76 | new_ref->type = REF_COMPONENT; | |
77 | new_ref->next = *ref; | |
78 | new_ref->u.c.sym = type_sym; | |
79 | new_ref->u.c.component = gfc_find_component (type_sym, name, true, true); | |
80 | gcc_assert (new_ref->u.c.component); | |
81 | ||
82 | if (new_ref->next) | |
83 | { | |
84 | gfc_ref *next = NULL; | |
85 | ||
86 | /* We need to update the base type in the trailing reference chain to | |
87 | that of the new component. */ | |
88 | ||
89 | gcc_assert (strcmp (name, "_data") == 0); | |
90 | ||
91 | if (new_ref->next->type == REF_COMPONENT) | |
92 | next = new_ref->next; | |
93 | else if (new_ref->next->type == REF_ARRAY | |
94 | && new_ref->next->next | |
95 | && new_ref->next->next->type == REF_COMPONENT) | |
96 | next = new_ref->next->next; | |
97 | ||
98 | if (next != NULL) | |
99 | { | |
100 | gcc_assert (new_ref->u.c.component->ts.type == BT_CLASS | |
101 | || new_ref->u.c.component->ts.type == BT_DERIVED); | |
102 | next->u.c.sym = new_ref->u.c.component->ts.u.derived; | |
103 | } | |
104 | } | |
105 | ||
106 | *ref = new_ref; | |
107 | } | |
108 | ||
109 | ||
110 | /* Tells whether we need to add a "_data" reference to access REF subobject | |
111 | from an object of type TS. If FIRST_REF_IN_CHAIN is set, then the base | |
112 | object accessed by REF is a variable; in other words it is a full object, | |
113 | not a subobject. */ | |
114 | ||
115 | static bool | |
116 | class_data_ref_missing (gfc_typespec *ts, gfc_ref *ref, bool first_ref_in_chain) | |
117 | { | |
118 | /* Only class containers may need the "_data" reference. */ | |
119 | if (ts->type != BT_CLASS) | |
120 | return false; | |
121 | ||
122 | /* Accessing a class container with an array reference is certainly wrong. */ | |
123 | if (ref->type != REF_COMPONENT) | |
124 | return true; | |
125 | ||
126 | /* Accessing the class container's fields is fine. */ | |
127 | if (ref->u.c.component->name[0] == '_') | |
128 | return false; | |
129 | ||
130 | /* At this point we have a class container with a non class container's field | |
131 | component reference. We don't want to add the "_data" component if we are | |
132 | at the first reference and the symbol's type is an extended derived type. | |
133 | In that case, conv_parent_component_references will do the right thing so | |
134 | it is not absolutely necessary. Omitting it prevents a regression (see | |
135 | class_41.f03) in the interface mapping mechanism. When evaluating string | |
136 | lengths depending on dummy arguments, we create a fake symbol with a type | |
137 | equal to that of the dummy type. However, because of type extension, | |
138 | the backend type (corresponding to the actual argument) can have a | |
139 | different (extended) type. Adding the "_data" component explicitly, using | |
140 | the base type, confuses the gfc_conv_component_ref code which deals with | |
141 | the extended type. */ | |
142 | if (first_ref_in_chain && ts->u.derived->attr.extension) | |
143 | return false; | |
144 | ||
145 | /* We have a class container with a non class container's field component | |
146 | reference that doesn't fall into the above. */ | |
147 | return true; | |
148 | } | |
149 | ||
150 | ||
151 | /* Browse through a data reference chain and add the missing "_data" references | |
152 | when a subobject of a class object is accessed without it. | |
153 | Note that it doesn't add the "_data" reference when the class container | |
154 | is the last element in the reference chain. */ | |
155 | ||
156 | void | |
157 | gfc_fix_class_refs (gfc_expr *e) | |
158 | { | |
159 | gfc_typespec *ts; | |
160 | gfc_ref **ref; | |
161 | ||
162 | if ((e->expr_type != EXPR_VARIABLE | |
163 | && e->expr_type != EXPR_FUNCTION) | |
164 | || (e->expr_type == EXPR_FUNCTION | |
165 | && e->value.function.isym != NULL)) | |
166 | return; | |
167 | ||
d00be3a3 SK |
168 | if (e->expr_type == EXPR_VARIABLE) |
169 | ts = &e->symtree->n.sym->ts; | |
170 | else | |
171 | { | |
172 | gfc_symbol *func; | |
173 | ||
174 | gcc_assert (e->expr_type == EXPR_FUNCTION); | |
175 | if (e->value.function.esym != NULL) | |
176 | func = e->value.function.esym; | |
177 | else | |
178 | func = e->symtree->n.sym; | |
179 | ||
180 | if (func->result != NULL) | |
181 | ts = &func->result->ts; | |
182 | else | |
183 | ts = &func->ts; | |
184 | } | |
37da591f MM |
185 | |
186 | for (ref = &e->ref; *ref != NULL; ref = &(*ref)->next) | |
187 | { | |
188 | if (class_data_ref_missing (ts, *ref, ref == &e->ref)) | |
189 | insert_component_ref (ts, ref, "_data"); | |
190 | ||
191 | if ((*ref)->type == REF_COMPONENT) | |
192 | ts = &(*ref)->u.c.component->ts; | |
193 | } | |
194 | } | |
195 | ||
196 | ||
d15bac21 | 197 | /* Insert a reference to the component of the given name. |
b04533af | 198 | Only to be used with CLASS containers and vtables. */ |
d15bac21 JW |
199 | |
200 | void | |
201 | gfc_add_component_ref (gfc_expr *e, const char *name) | |
202 | { | |
203 | gfc_ref **tail = &(e->ref); | |
204 | gfc_ref *next = NULL; | |
205 | gfc_symbol *derived = e->symtree->n.sym->ts.u.derived; | |
206 | while (*tail != NULL) | |
207 | { | |
208 | if ((*tail)->type == REF_COMPONENT) | |
c49ea23d PT |
209 | { |
210 | if (strcmp ((*tail)->u.c.component->name, "_data") == 0 | |
211 | && (*tail)->next | |
212 | && (*tail)->next->type == REF_ARRAY | |
213 | && (*tail)->next->next == NULL) | |
214 | return; | |
215 | derived = (*tail)->u.c.component->ts.u.derived; | |
216 | } | |
d15bac21 JW |
217 | if ((*tail)->type == REF_ARRAY && (*tail)->next == NULL) |
218 | break; | |
219 | tail = &((*tail)->next); | |
220 | } | |
b04533af | 221 | if (*tail != NULL && strcmp (name, "_data") == 0) |
d15bac21 JW |
222 | next = *tail; |
223 | (*tail) = gfc_get_ref(); | |
224 | (*tail)->next = next; | |
225 | (*tail)->type = REF_COMPONENT; | |
226 | (*tail)->u.c.sym = derived; | |
227 | (*tail)->u.c.component = gfc_find_component (derived, name, true, true); | |
228 | gcc_assert((*tail)->u.c.component); | |
229 | if (!next) | |
230 | e->ts = (*tail)->u.c.component->ts; | |
231 | } | |
232 | ||
233 | ||
c49ea23d PT |
234 | /* This is used to add both the _data component reference and an array |
235 | reference to class expressions. Used in translation of intrinsic | |
236 | array inquiry functions. */ | |
237 | ||
238 | void | |
239 | gfc_add_class_array_ref (gfc_expr *e) | |
240 | { | |
c62c6622 | 241 | int rank = CLASS_DATA (e)->as->rank; |
c49ea23d PT |
242 | gfc_array_spec *as = CLASS_DATA (e)->as; |
243 | gfc_ref *ref = NULL; | |
244 | gfc_add_component_ref (e, "_data"); | |
245 | e->rank = rank; | |
246 | for (ref = e->ref; ref; ref = ref->next) | |
247 | if (!ref->next) | |
248 | break; | |
249 | if (ref->type != REF_ARRAY) | |
250 | { | |
251 | ref->next = gfc_get_ref (); | |
252 | ref = ref->next; | |
253 | ref->type = REF_ARRAY; | |
254 | ref->u.ar.type = AR_FULL; | |
8b704316 | 255 | ref->u.ar.as = as; |
c49ea23d PT |
256 | } |
257 | } | |
258 | ||
259 | ||
260 | /* Unfortunately, class array expressions can appear in various conditions; | |
261 | with and without both _data component and an arrayspec. This function | |
262 | deals with that variability. The previous reference to 'ref' is to a | |
263 | class array. */ | |
264 | ||
265 | static bool | |
266 | class_array_ref_detected (gfc_ref *ref, bool *full_array) | |
267 | { | |
268 | bool no_data = false; | |
269 | bool with_data = false; | |
270 | ||
271 | /* An array reference with no _data component. */ | |
272 | if (ref && ref->type == REF_ARRAY | |
273 | && !ref->next | |
274 | && ref->u.ar.type != AR_ELEMENT) | |
275 | { | |
276 | if (full_array) | |
277 | *full_array = ref->u.ar.type == AR_FULL; | |
278 | no_data = true; | |
279 | } | |
280 | ||
281 | /* Cover cases where _data appears, with or without an array ref. */ | |
282 | if (ref && ref->type == REF_COMPONENT | |
283 | && strcmp (ref->u.c.component->name, "_data") == 0) | |
284 | { | |
285 | if (!ref->next) | |
286 | { | |
287 | with_data = true; | |
288 | if (full_array) | |
289 | *full_array = true; | |
290 | } | |
291 | else if (ref->next && ref->next->type == REF_ARRAY | |
292 | && !ref->next->next | |
293 | && ref->type == REF_COMPONENT | |
294 | && ref->next->type == REF_ARRAY | |
295 | && ref->next->u.ar.type != AR_ELEMENT) | |
296 | { | |
297 | with_data = true; | |
298 | if (full_array) | |
299 | *full_array = ref->next->u.ar.type == AR_FULL; | |
300 | } | |
301 | } | |
302 | ||
303 | return no_data || with_data; | |
304 | } | |
305 | ||
306 | ||
307 | /* Returns true if the expression contains a reference to a class | |
308 | array. Notice that class array elements return false. */ | |
309 | ||
310 | bool | |
311 | gfc_is_class_array_ref (gfc_expr *e, bool *full_array) | |
312 | { | |
313 | gfc_ref *ref; | |
314 | ||
315 | if (!e->rank) | |
316 | return false; | |
317 | ||
318 | if (full_array) | |
319 | *full_array= false; | |
320 | ||
321 | /* Is this a class array object? ie. Is the symbol of type class? */ | |
322 | if (e->symtree | |
323 | && e->symtree->n.sym->ts.type == BT_CLASS | |
324 | && CLASS_DATA (e->symtree->n.sym) | |
325 | && CLASS_DATA (e->symtree->n.sym)->attr.dimension | |
326 | && class_array_ref_detected (e->ref, full_array)) | |
327 | return true; | |
328 | ||
329 | /* Or is this a class array component reference? */ | |
330 | for (ref = e->ref; ref; ref = ref->next) | |
331 | { | |
332 | if (ref->type == REF_COMPONENT | |
333 | && ref->u.c.component->ts.type == BT_CLASS | |
334 | && CLASS_DATA (ref->u.c.component)->attr.dimension | |
335 | && class_array_ref_detected (ref->next, full_array)) | |
336 | return true; | |
337 | } | |
338 | ||
339 | return false; | |
340 | } | |
341 | ||
342 | ||
343 | /* Returns true if the expression is a reference to a class | |
344 | scalar. This function is necessary because such expressions | |
345 | can be dressed with a reference to the _data component and so | |
346 | have a type other than BT_CLASS. */ | |
347 | ||
348 | bool | |
349 | gfc_is_class_scalar_expr (gfc_expr *e) | |
350 | { | |
351 | gfc_ref *ref; | |
352 | ||
353 | if (e->rank) | |
354 | return false; | |
355 | ||
356 | /* Is this a class object? */ | |
357 | if (e->symtree | |
358 | && e->symtree->n.sym->ts.type == BT_CLASS | |
359 | && CLASS_DATA (e->symtree->n.sym) | |
360 | && !CLASS_DATA (e->symtree->n.sym)->attr.dimension | |
361 | && (e->ref == NULL | |
362 | || (strcmp (e->ref->u.c.component->name, "_data") == 0 | |
363 | && e->ref->next == NULL))) | |
364 | return true; | |
365 | ||
366 | /* Or is the final reference BT_CLASS or _data? */ | |
367 | for (ref = e->ref; ref; ref = ref->next) | |
368 | { | |
369 | if (ref->type == REF_COMPONENT | |
370 | && ref->u.c.component->ts.type == BT_CLASS | |
371 | && CLASS_DATA (ref->u.c.component) | |
372 | && !CLASS_DATA (ref->u.c.component)->attr.dimension | |
373 | && (ref->next == NULL | |
374 | || (strcmp (ref->next->u.c.component->name, "_data") == 0 | |
375 | && ref->next->next == NULL))) | |
376 | return true; | |
377 | } | |
378 | ||
379 | return false; | |
380 | } | |
381 | ||
382 | ||
5bf5fa56 MM |
383 | /* Tells whether the expression E is a reference to a (scalar) class container. |
384 | Scalar because array class containers usually have an array reference after | |
385 | them, and gfc_fix_class_refs will add the missing "_data" component reference | |
386 | in that case. */ | |
387 | ||
388 | bool | |
389 | gfc_is_class_container_ref (gfc_expr *e) | |
390 | { | |
391 | gfc_ref *ref; | |
392 | bool result; | |
393 | ||
394 | if (e->expr_type != EXPR_VARIABLE) | |
395 | return e->ts.type == BT_CLASS; | |
396 | ||
397 | if (e->symtree->n.sym->ts.type == BT_CLASS) | |
398 | result = true; | |
399 | else | |
400 | result = false; | |
401 | ||
402 | for (ref = e->ref; ref; ref = ref->next) | |
403 | { | |
404 | if (ref->type != REF_COMPONENT) | |
405 | result = false; | |
406 | else if (ref->u.c.component->ts.type == BT_CLASS) | |
8b704316 | 407 | result = true; |
5bf5fa56 MM |
408 | else |
409 | result = false; | |
410 | } | |
411 | ||
412 | return result; | |
413 | } | |
414 | ||
415 | ||
d15bac21 | 416 | /* Build a NULL initializer for CLASS pointers, |
0d87fa8c JW |
417 | initializing the _data component to NULL and |
418 | the _vptr component to the declared type. */ | |
d15bac21 JW |
419 | |
420 | gfc_expr * | |
8b704316 | 421 | gfc_class_null_initializer (gfc_typespec *ts, gfc_expr *init_expr) |
d15bac21 JW |
422 | { |
423 | gfc_expr *init; | |
424 | gfc_component *comp; | |
8b704316 PT |
425 | gfc_symbol *vtab = NULL; |
426 | bool is_unlimited_polymorphic; | |
427 | ||
428 | is_unlimited_polymorphic = ts->u.derived | |
429 | && ts->u.derived->components->ts.u.derived | |
430 | && ts->u.derived->components->ts.u.derived->attr.unlimited_polymorphic; | |
431 | ||
432 | if (is_unlimited_polymorphic && init_expr) | |
15115f7a | 433 | vtab = gfc_find_intrinsic_vtab (&ts->u.derived->components->ts); |
8b704316 PT |
434 | else |
435 | vtab = gfc_find_derived_vtab (ts->u.derived); | |
436 | ||
d15bac21 JW |
437 | init = gfc_get_structure_constructor_expr (ts->type, ts->kind, |
438 | &ts->u.derived->declared_at); | |
439 | init->ts = *ts; | |
8b704316 | 440 | |
d15bac21 JW |
441 | for (comp = ts->u.derived->components; comp; comp = comp->next) |
442 | { | |
443 | gfc_constructor *ctor = gfc_constructor_get(); | |
8b704316 PT |
444 | if (strcmp (comp->name, "_vptr") == 0 && vtab) |
445 | ctor->expr = gfc_lval_expr_from_sym (vtab); | |
0d87fa8c JW |
446 | else |
447 | ctor->expr = gfc_get_null_expr (NULL); | |
d15bac21 JW |
448 | gfc_constructor_append (&init->value.constructor, ctor); |
449 | } | |
450 | ||
451 | return init; | |
452 | } | |
453 | ||
454 | ||
b04533af JW |
455 | /* Create a unique string identifier for a derived type, composed of its name |
456 | and module name. This is used to construct unique names for the class | |
457 | containers and vtab symbols. */ | |
458 | ||
459 | static void | |
460 | get_unique_type_string (char *string, gfc_symbol *derived) | |
b52956be JW |
461 | { |
462 | char dt_name[GFC_MAX_SYMBOL_LEN+1]; | |
8b704316 PT |
463 | if (derived->attr.unlimited_polymorphic) |
464 | sprintf (dt_name, "%s", "$tar"); | |
465 | else | |
b52956be JW |
466 | sprintf (dt_name, "%s", derived->name); |
467 | dt_name[0] = TOUPPER (dt_name[0]); | |
8b704316 PT |
468 | if (derived->attr.unlimited_polymorphic) |
469 | sprintf (string, "_%s", dt_name); | |
470 | else if (derived->module) | |
b52956be | 471 | sprintf (string, "%s_%s", derived->module, dt_name); |
4fa02692 | 472 | else if (derived->ns->proc_name) |
b52956be | 473 | sprintf (string, "%s_%s", derived->ns->proc_name->name, dt_name); |
4fa02692 | 474 | else |
b52956be | 475 | sprintf (string, "_%s", dt_name); |
4fa02692 JW |
476 | } |
477 | ||
478 | ||
479 | /* A relative of 'get_unique_type_string' which makes sure the generated | |
480 | string will not be too long (replacing it by a hash string if needed). */ | |
481 | ||
482 | static void | |
483 | get_unique_hashed_string (char *string, gfc_symbol *derived) | |
484 | { | |
485 | char tmp[2*GFC_MAX_SYMBOL_LEN+2]; | |
486 | get_unique_type_string (&tmp[0], derived); | |
cb83a137 | 487 | /* If string is too long, use hash value in hex representation (allow for |
2419ff64 TB |
488 | extra decoration, cf. gfc_build_class_symbol & gfc_find_derived_vtab). |
489 | We need space to for 15 characters "__class_" + symbol name + "_%d_%da", | |
490 | where %d is the (co)rank which can be up to n = 15. */ | |
491 | if (strlen (tmp) > GFC_MAX_SYMBOL_LEN - 15) | |
4fa02692 JW |
492 | { |
493 | int h = gfc_hash_value (derived); | |
494 | sprintf (string, "%X", h); | |
495 | } | |
496 | else | |
497 | strcpy (string, tmp); | |
498 | } | |
499 | ||
500 | ||
501 | /* Assign a hash value for a derived type. The algorithm is that of SDBM. */ | |
502 | ||
503 | unsigned int | |
504 | gfc_hash_value (gfc_symbol *sym) | |
505 | { | |
506 | unsigned int hash = 0; | |
507 | char c[2*(GFC_MAX_SYMBOL_LEN+1)]; | |
508 | int i, len; | |
8b704316 | 509 | |
4fa02692 JW |
510 | get_unique_type_string (&c[0], sym); |
511 | len = strlen (c); | |
8b704316 PT |
512 | |
513 | for (i = 0; i < len; i++) | |
514 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
515 | ||
516 | /* Return the hash but take the modulus for the sake of module read, | |
517 | even though this slightly increases the chance of collision. */ | |
518 | return (hash % 100000000); | |
519 | } | |
520 | ||
521 | ||
522 | /* Assign a hash value for an intrinsic type. The algorithm is that of SDBM. */ | |
523 | ||
524 | unsigned int | |
525 | gfc_intrinsic_hash_value (gfc_typespec *ts) | |
526 | { | |
527 | unsigned int hash = 0; | |
528 | const char *c = gfc_typename (ts); | |
529 | int i, len; | |
530 | ||
531 | len = strlen (c); | |
532 | ||
4fa02692 JW |
533 | for (i = 0; i < len; i++) |
534 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
535 | ||
536 | /* Return the hash but take the modulus for the sake of module read, | |
537 | even though this slightly increases the chance of collision. */ | |
538 | return (hash % 100000000); | |
b04533af JW |
539 | } |
540 | ||
541 | ||
d15bac21 JW |
542 | /* Build a polymorphic CLASS entity, using the symbol that comes from |
543 | build_sym. A CLASS entity is represented by an encapsulating type, | |
b04533af JW |
544 | which contains the declared type as '_data' component, plus a pointer |
545 | component '_vptr' which determines the dynamic type. */ | |
d15bac21 JW |
546 | |
547 | gfc_try | |
548 | gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr, | |
549 | gfc_array_spec **as, bool delayed_vtab) | |
550 | { | |
4fa02692 | 551 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; |
d15bac21 JW |
552 | gfc_symbol *fclass; |
553 | gfc_symbol *vtab; | |
554 | gfc_component *c; | |
8b704316 | 555 | gfc_namespace *ns; |
c62c6622 | 556 | int rank; |
c49ea23d | 557 | |
fc2655fb TB |
558 | gcc_assert (as); |
559 | ||
560 | if (*as && (*as)->type == AS_ASSUMED_SIZE) | |
c49ea23d PT |
561 | { |
562 | gfc_error ("Assumed size polymorphic objects or components, such " | |
563 | "as that at %C, have not yet been implemented"); | |
564 | return FAILURE; | |
565 | } | |
566 | ||
528622fd JW |
567 | if (attr->class_ok) |
568 | /* Class container has already been built. */ | |
569 | return SUCCESS; | |
570 | ||
7d40e49f TB |
571 | attr->class_ok = attr->dummy || attr->pointer || attr->allocatable |
572 | || attr->select_type_temporary; | |
8b704316 | 573 | |
528622fd JW |
574 | if (!attr->class_ok) |
575 | /* We can not build the class container yet. */ | |
576 | return SUCCESS; | |
d15bac21 JW |
577 | |
578 | /* Determine the name of the encapsulating type. */ | |
c62c6622 | 579 | rank = !(*as) || (*as)->rank == -1 ? GFC_MAX_DIMENSIONS : (*as)->rank; |
4fa02692 | 580 | get_unique_hashed_string (tname, ts->u.derived); |
2419ff64 | 581 | if ((*as) && attr->allocatable) |
c62c6622 TB |
582 | sprintf (name, "__class_%s_%d_%da", tname, rank, (*as)->corank); |
583 | else if ((*as) && attr->pointer) | |
584 | sprintf (name, "__class_%s_%d_%dp", tname, rank, (*as)->corank); | |
2419ff64 | 585 | else if ((*as)) |
c62c6622 | 586 | sprintf (name, "__class_%s_%d_%d", tname, rank, (*as)->corank); |
d15bac21 | 587 | else if (attr->pointer) |
b04533af | 588 | sprintf (name, "__class_%s_p", tname); |
d15bac21 | 589 | else if (attr->allocatable) |
b04533af | 590 | sprintf (name, "__class_%s_a", tname); |
d15bac21 | 591 | else |
b04533af | 592 | sprintf (name, "__class_%s", tname); |
d15bac21 | 593 | |
8b704316 PT |
594 | if (ts->u.derived->attr.unlimited_polymorphic) |
595 | { | |
596 | /* Find the top-level namespace. */ | |
597 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
598 | if (!ns->parent) | |
599 | break; | |
600 | } | |
601 | else | |
602 | ns = ts->u.derived->ns; | |
603 | ||
604 | gfc_find_symbol (name, ns, 0, &fclass); | |
d15bac21 JW |
605 | if (fclass == NULL) |
606 | { | |
607 | gfc_symtree *st; | |
608 | /* If not there, create a new symbol. */ | |
8b704316 PT |
609 | fclass = gfc_new_symbol (name, ns); |
610 | st = gfc_new_symtree (&ns->sym_root, name); | |
d15bac21 JW |
611 | st->n.sym = fclass; |
612 | gfc_set_sym_referenced (fclass); | |
613 | fclass->refs++; | |
614 | fclass->ts.type = BT_UNKNOWN; | |
8b704316 | 615 | if (!ts->u.derived->attr.unlimited_polymorphic) |
94241120 | 616 | fclass->attr.abstract = ts->u.derived->attr.abstract; |
42ff605a | 617 | fclass->f2k_derived = gfc_get_namespace (NULL, 0); |
d15bac21 JW |
618 | if (gfc_add_flavor (&fclass->attr, FL_DERIVED, |
619 | NULL, &gfc_current_locus) == FAILURE) | |
620 | return FAILURE; | |
621 | ||
b04533af JW |
622 | /* Add component '_data'. */ |
623 | if (gfc_add_component (fclass, "_data", &c) == FAILURE) | |
d15bac21 JW |
624 | return FAILURE; |
625 | c->ts = *ts; | |
626 | c->ts.type = BT_DERIVED; | |
627 | c->attr.access = ACCESS_PRIVATE; | |
628 | c->ts.u.derived = ts->u.derived; | |
629 | c->attr.class_pointer = attr->pointer; | |
7d40e49f TB |
630 | c->attr.pointer = attr->pointer || (attr->dummy && !attr->allocatable) |
631 | || attr->select_type_temporary; | |
d15bac21 JW |
632 | c->attr.allocatable = attr->allocatable; |
633 | c->attr.dimension = attr->dimension; | |
634 | c->attr.codimension = attr->codimension; | |
8b704316 | 635 | c->attr.abstract = fclass->attr.abstract; |
d15bac21 JW |
636 | c->as = (*as); |
637 | c->initializer = NULL; | |
638 | ||
b04533af JW |
639 | /* Add component '_vptr'. */ |
640 | if (gfc_add_component (fclass, "_vptr", &c) == FAILURE) | |
d15bac21 JW |
641 | return FAILURE; |
642 | c->ts.type = BT_DERIVED; | |
8e54f139 TB |
643 | if (delayed_vtab |
644 | || (ts->u.derived->f2k_derived | |
645 | && ts->u.derived->f2k_derived->finalizers)) | |
d15bac21 JW |
646 | c->ts.u.derived = NULL; |
647 | else | |
648 | { | |
88ce8031 | 649 | vtab = gfc_find_derived_vtab (ts->u.derived); |
d15bac21 JW |
650 | gcc_assert (vtab); |
651 | c->ts.u.derived = vtab->ts.u.derived; | |
652 | } | |
f3f98a1e | 653 | c->attr.access = ACCESS_PRIVATE; |
d15bac21 JW |
654 | c->attr.pointer = 1; |
655 | } | |
656 | ||
8b704316 | 657 | if (!ts->u.derived->attr.unlimited_polymorphic) |
d15bac21 | 658 | { |
8b704316 PT |
659 | /* Since the extension field is 8 bit wide, we can only have |
660 | up to 255 extension levels. */ | |
661 | if (ts->u.derived->attr.extension == 255) | |
662 | { | |
663 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
664 | ts->u.derived->name, &ts->u.derived->declared_at); | |
665 | return FAILURE; | |
666 | } | |
667 | ||
668 | fclass->attr.extension = ts->u.derived->attr.extension + 1; | |
669 | fclass->attr.alloc_comp = ts->u.derived->attr.alloc_comp; | |
d15bac21 | 670 | } |
8b704316 | 671 | |
d15bac21 JW |
672 | fclass->attr.is_class = 1; |
673 | ts->u.derived = fclass; | |
c49ea23d PT |
674 | attr->allocatable = attr->pointer = attr->dimension = attr->codimension = 0; |
675 | (*as) = NULL; | |
d15bac21 JW |
676 | return SUCCESS; |
677 | } | |
678 | ||
679 | ||
88ce8031 JW |
680 | /* Add a procedure pointer component to the vtype |
681 | to represent a specific type-bound procedure. */ | |
682 | ||
d15bac21 | 683 | static void |
88ce8031 | 684 | add_proc_comp (gfc_symbol *vtype, const char *name, gfc_typebound_proc *tb) |
d15bac21 | 685 | { |
88ce8031 | 686 | gfc_component *c; |
fd83db3d JW |
687 | |
688 | if (tb->non_overridable) | |
689 | return; | |
8b704316 | 690 | |
88ce8031 JW |
691 | c = gfc_find_component (vtype, name, true, true); |
692 | ||
693 | if (c == NULL) | |
d15bac21 | 694 | { |
88ce8031 JW |
695 | /* Add procedure component. */ |
696 | if (gfc_add_component (vtype, name, &c) == FAILURE) | |
d15bac21 | 697 | return; |
d15bac21 | 698 | |
88ce8031 JW |
699 | if (!c->tb) |
700 | c->tb = XCNEW (gfc_typebound_proc); | |
701 | *c->tb = *tb; | |
702 | c->tb->ppc = 1; | |
703 | c->attr.procedure = 1; | |
704 | c->attr.proc_pointer = 1; | |
705 | c->attr.flavor = FL_PROCEDURE; | |
706 | c->attr.access = ACCESS_PRIVATE; | |
707 | c->attr.external = 1; | |
708 | c->attr.untyped = 1; | |
709 | c->attr.if_source = IFSRC_IFBODY; | |
d15bac21 JW |
710 | } |
711 | else if (c->attr.proc_pointer && c->tb) | |
712 | { | |
88ce8031 | 713 | *c->tb = *tb; |
d15bac21 | 714 | c->tb->ppc = 1; |
1d0134b3 JW |
715 | } |
716 | ||
717 | if (tb->u.specific) | |
718 | { | |
719 | c->ts.interface = tb->u.specific->n.sym; | |
720 | if (!tb->deferred) | |
721 | c->initializer = gfc_get_variable_expr (tb->u.specific); | |
d15bac21 JW |
722 | } |
723 | } | |
724 | ||
88ce8031 JW |
725 | |
726 | /* Add all specific type-bound procedures in the symtree 'st' to a vtype. */ | |
727 | ||
d15bac21 | 728 | static void |
88ce8031 | 729 | add_procs_to_declared_vtab1 (gfc_symtree *st, gfc_symbol *vtype) |
d15bac21 | 730 | { |
d15bac21 JW |
731 | if (!st) |
732 | return; | |
733 | ||
734 | if (st->left) | |
88ce8031 | 735 | add_procs_to_declared_vtab1 (st->left, vtype); |
d15bac21 JW |
736 | |
737 | if (st->right) | |
88ce8031 | 738 | add_procs_to_declared_vtab1 (st->right, vtype); |
d15bac21 | 739 | |
8b704316 | 740 | if (st->n.tb && !st->n.tb->error |
aea18e92 | 741 | && !st->n.tb->is_generic && st->n.tb->u.specific) |
88ce8031 | 742 | add_proc_comp (vtype, st->name, st->n.tb); |
d15bac21 JW |
743 | } |
744 | ||
745 | ||
88ce8031 JW |
746 | /* Copy procedure pointers components from the parent type. */ |
747 | ||
d15bac21 | 748 | static void |
88ce8031 | 749 | copy_vtab_proc_comps (gfc_symbol *declared, gfc_symbol *vtype) |
d15bac21 | 750 | { |
88ce8031 | 751 | gfc_component *cmp; |
d15bac21 JW |
752 | gfc_symbol *vtab; |
753 | ||
88ce8031 | 754 | vtab = gfc_find_derived_vtab (declared); |
d15bac21 JW |
755 | |
756 | for (cmp = vtab->ts.u.derived->components; cmp; cmp = cmp->next) | |
757 | { | |
758 | if (gfc_find_component (vtype, cmp->name, true, true)) | |
759 | continue; | |
760 | ||
88ce8031 | 761 | add_proc_comp (vtype, cmp->name, cmp->tb); |
d15bac21 JW |
762 | } |
763 | } | |
764 | ||
d15bac21 | 765 | |
8e54f139 TB |
766 | /* Returns true if any of its nonpointer nonallocatable components or |
767 | their nonpointer nonallocatable subcomponents has a finalization | |
768 | subroutine. */ | |
769 | ||
770 | static bool | |
771 | has_finalizer_component (gfc_symbol *derived) | |
772 | { | |
773 | gfc_component *c; | |
774 | ||
775 | for (c = derived->components; c; c = c->next) | |
776 | { | |
777 | if (c->ts.type == BT_DERIVED && c->ts.u.derived->f2k_derived | |
778 | && c->ts.u.derived->f2k_derived->finalizers) | |
779 | return true; | |
780 | ||
781 | if (c->ts.type == BT_DERIVED | |
782 | && !c->attr.pointer && !c->attr.allocatable | |
783 | && has_finalizer_component (c->ts.u.derived)) | |
784 | return true; | |
785 | } | |
786 | return false; | |
787 | } | |
788 | ||
789 | ||
790 | /* Call DEALLOCATE for the passed component if it is allocatable, if it is | |
791 | neither allocatable nor a pointer but has a finalizer, call it. If it | |
bc7a2337 TB |
792 | is a nonpointer component with allocatable components or has finalizers, walk |
793 | them. Either of them is required; other nonallocatables and pointers aren't | |
8e54f139 TB |
794 | handled gracefully. |
795 | Note: If the component is allocatable, the DEALLOCATE handling takes care | |
796 | of calling the appropriate finalizers, coarray deregistering, and | |
797 | deallocation of allocatable subcomponents. */ | |
798 | ||
799 | static void | |
800 | finalize_component (gfc_expr *expr, gfc_symbol *derived, gfc_component *comp, | |
29a7d776 | 801 | gfc_symbol *stat, gfc_symbol *fini_coarray, gfc_code **code) |
8e54f139 TB |
802 | { |
803 | gfc_expr *e; | |
804 | gfc_ref *ref; | |
805 | ||
806 | if (comp->ts.type != BT_DERIVED && comp->ts.type != BT_CLASS | |
807 | && !comp->attr.allocatable) | |
808 | return; | |
809 | ||
810 | if ((comp->ts.type == BT_DERIVED && comp->attr.pointer) | |
811 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
812 | && CLASS_DATA (comp)->attr.pointer)) | |
813 | return; | |
814 | ||
815 | if (comp->ts.type == BT_DERIVED && !comp->attr.allocatable | |
816 | && (comp->ts.u.derived->f2k_derived == NULL | |
817 | || comp->ts.u.derived->f2k_derived->finalizers == NULL) | |
818 | && !has_finalizer_component (comp->ts.u.derived)) | |
819 | return; | |
820 | ||
821 | e = gfc_copy_expr (expr); | |
822 | if (!e->ref) | |
823 | e->ref = ref = gfc_get_ref (); | |
824 | else | |
825 | { | |
826 | for (ref = e->ref; ref->next; ref = ref->next) | |
827 | ; | |
828 | ref->next = gfc_get_ref (); | |
829 | ref = ref->next; | |
830 | } | |
831 | ref->type = REF_COMPONENT; | |
832 | ref->u.c.sym = derived; | |
833 | ref->u.c.component = comp; | |
834 | e->ts = comp->ts; | |
835 | ||
836 | if (comp->attr.dimension | |
837 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
838 | && CLASS_DATA (comp)->attr.dimension)) | |
839 | { | |
840 | ref->next = gfc_get_ref (); | |
841 | ref->next->type = REF_ARRAY; | |
842 | ref->next->u.ar.type = AR_FULL; | |
843 | ref->next->u.ar.dimen = 0; | |
844 | ref->next->u.ar.as = comp->ts.type == BT_CLASS ? CLASS_DATA (comp)->as | |
845 | : comp->as; | |
846 | e->rank = ref->next->u.ar.as->rank; | |
847 | } | |
848 | ||
29a7d776 | 849 | /* Call DEALLOCATE (comp, stat=ignore). */ |
8e54f139 TB |
850 | if (comp->attr.allocatable |
851 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
852 | && CLASS_DATA (comp)->attr.allocatable)) | |
853 | { | |
29a7d776 TB |
854 | gfc_code *dealloc, *block = NULL; |
855 | ||
856 | /* Add IF (fini_coarray). */ | |
857 | if (comp->attr.codimension | |
858 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
859 | && CLASS_DATA (comp)->attr.allocatable)) | |
860 | { | |
861 | block = XCNEW (gfc_code); | |
862 | if (*code) | |
863 | { | |
864 | (*code)->next = block; | |
865 | (*code) = (*code)->next; | |
866 | } | |
867 | else | |
868 | (*code) = block; | |
869 | ||
870 | block->loc = gfc_current_locus; | |
871 | block->op = EXEC_IF; | |
872 | ||
873 | block->block = XCNEW (gfc_code); | |
874 | block = block->block; | |
875 | block->loc = gfc_current_locus; | |
876 | block->op = EXEC_IF; | |
877 | block->expr1 = gfc_lval_expr_from_sym (fini_coarray); | |
878 | } | |
8e54f139 TB |
879 | |
880 | dealloc = XCNEW (gfc_code); | |
881 | dealloc->op = EXEC_DEALLOCATE; | |
882 | dealloc->loc = gfc_current_locus; | |
883 | ||
884 | dealloc->ext.alloc.list = gfc_get_alloc (); | |
885 | dealloc->ext.alloc.list->expr = e; | |
29a7d776 | 886 | dealloc->expr1 = gfc_lval_expr_from_sym (stat); |
8e54f139 | 887 | |
29a7d776 TB |
888 | if (block) |
889 | block->next = dealloc; | |
890 | else if (*code) | |
8e54f139 TB |
891 | { |
892 | (*code)->next = dealloc; | |
893 | (*code) = (*code)->next; | |
894 | } | |
895 | else | |
896 | (*code) = dealloc; | |
897 | } | |
898 | else if (comp->ts.type == BT_DERIVED | |
899 | && comp->ts.u.derived->f2k_derived | |
900 | && comp->ts.u.derived->f2k_derived->finalizers) | |
901 | { | |
902 | /* Call FINAL_WRAPPER (comp); */ | |
903 | gfc_code *final_wrap; | |
904 | gfc_symbol *vtab; | |
905 | gfc_component *c; | |
906 | ||
907 | vtab = gfc_find_derived_vtab (comp->ts.u.derived); | |
908 | for (c = vtab->ts.u.derived->components; c; c = c->next) | |
909 | if (strcmp (c->name, "_final") == 0) | |
910 | break; | |
911 | ||
912 | gcc_assert (c); | |
913 | final_wrap = XCNEW (gfc_code); | |
914 | final_wrap->op = EXEC_CALL; | |
915 | final_wrap->loc = gfc_current_locus; | |
916 | final_wrap->loc = gfc_current_locus; | |
917 | final_wrap->symtree = c->initializer->symtree; | |
918 | final_wrap->resolved_sym = c->initializer->symtree->n.sym; | |
919 | final_wrap->ext.actual = gfc_get_actual_arglist (); | |
920 | final_wrap->ext.actual->expr = e; | |
921 | ||
922 | if (*code) | |
923 | { | |
924 | (*code)->next = final_wrap; | |
925 | (*code) = (*code)->next; | |
926 | } | |
927 | else | |
928 | (*code) = final_wrap; | |
929 | } | |
930 | else | |
931 | { | |
932 | gfc_component *c; | |
933 | ||
934 | for (c = comp->ts.u.derived->components; c; c = c->next) | |
29a7d776 | 935 | finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray, code); |
fc2655fb | 936 | gfc_free_expr (e); |
8e54f139 TB |
937 | } |
938 | } | |
939 | ||
940 | ||
941 | /* Generate code equivalent to | |
942 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b | 943 | + offset, c_ptr), ptr). */ |
8e54f139 TB |
944 | |
945 | static gfc_code * | |
9e04287b TB |
946 | finalization_scalarizer (gfc_symbol *array, gfc_symbol *ptr, |
947 | gfc_expr *offset, gfc_namespace *sub_ns) | |
8e54f139 TB |
948 | { |
949 | gfc_code *block; | |
9e04287b | 950 | gfc_expr *expr, *expr2; |
8e54f139 TB |
951 | |
952 | /* C_F_POINTER(). */ | |
953 | block = XCNEW (gfc_code); | |
954 | block->op = EXEC_CALL; | |
955 | block->loc = gfc_current_locus; | |
956 | gfc_get_sym_tree ("c_f_pointer", sub_ns, &block->symtree, true); | |
957 | block->resolved_sym = block->symtree->n.sym; | |
958 | block->resolved_sym->attr.flavor = FL_PROCEDURE; | |
959 | block->resolved_sym->attr.intrinsic = 1; | |
960 | block->resolved_sym->from_intmod = INTMOD_ISO_C_BINDING; | |
961 | block->resolved_sym->intmod_sym_id = ISOCBINDING_F_POINTER; | |
962 | gfc_commit_symbol (block->resolved_sym); | |
963 | ||
964 | /* C_F_POINTER's first argument: TRANSFER ( <addr>, c_intptr_t). */ | |
965 | block->ext.actual = gfc_get_actual_arglist (); | |
966 | block->ext.actual->next = gfc_get_actual_arglist (); | |
967 | block->ext.actual->next->expr = gfc_get_int_expr (gfc_index_integer_kind, | |
968 | NULL, 0); | |
969 | ||
970 | /* The <addr> part: TRANSFER (C_LOC (array), c_intptr_t). */ | |
971 | ||
972 | /* TRANSFER. */ | |
973 | expr2 = gfc_get_expr (); | |
974 | expr2->expr_type = EXPR_FUNCTION; | |
975 | expr2->value.function.name = "__transfer0"; | |
976 | expr2->value.function.isym | |
977 | = gfc_intrinsic_function_by_id (GFC_ISYM_TRANSFER); | |
978 | /* Set symtree for -fdump-parse-tree. */ | |
979 | gfc_get_sym_tree ("transfer", sub_ns, &expr2->symtree, false); | |
9e04287b | 980 | expr2->symtree->n.sym->intmod_sym_id = GFC_ISYM_TRANSFER; |
8e54f139 TB |
981 | expr2->symtree->n.sym->attr.flavor = FL_PROCEDURE; |
982 | expr2->symtree->n.sym->attr.intrinsic = 1; | |
983 | gfc_commit_symbol (expr2->symtree->n.sym); | |
984 | expr2->value.function.actual = gfc_get_actual_arglist (); | |
985 | expr2->value.function.actual->expr | |
986 | = gfc_lval_expr_from_sym (array); | |
987 | expr2->ts.type = BT_INTEGER; | |
988 | expr2->ts.kind = gfc_index_integer_kind; | |
989 | ||
990 | /* TRANSFER's second argument: 0_c_intptr_t. */ | |
991 | expr2->value.function.actual = gfc_get_actual_arglist (); | |
992 | expr2->value.function.actual->next = gfc_get_actual_arglist (); | |
993 | expr2->value.function.actual->next->expr | |
994 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
995 | expr2->value.function.actual->next->next = gfc_get_actual_arglist (); | |
996 | ||
997 | /* TRANSFER's first argument: C_LOC (array). */ | |
998 | expr = gfc_get_expr (); | |
999 | expr->expr_type = EXPR_FUNCTION; | |
1000 | gfc_get_sym_tree ("c_loc", sub_ns, &expr->symtree, false); | |
1001 | expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1002 | expr->symtree->n.sym->intmod_sym_id = ISOCBINDING_LOC; | |
1003 | expr->symtree->n.sym->attr.intrinsic = 1; | |
1004 | expr->symtree->n.sym->from_intmod = INTMOD_ISO_C_BINDING; | |
1005 | expr->value.function.esym = expr->symtree->n.sym; | |
1006 | expr->value.function.actual = gfc_get_actual_arglist (); | |
1007 | expr->value.function.actual->expr | |
1008 | = gfc_lval_expr_from_sym (array); | |
1009 | expr->symtree->n.sym->result = expr->symtree->n.sym; | |
1010 | gfc_commit_symbol (expr->symtree->n.sym); | |
1011 | expr->ts.type = BT_INTEGER; | |
1012 | expr->ts.kind = gfc_index_integer_kind; | |
1013 | expr2->value.function.actual->expr = expr; | |
1014 | ||
8e54f139 TB |
1015 | /* <array addr> + <offset>. */ |
1016 | block->ext.actual->expr = gfc_get_expr (); | |
1017 | block->ext.actual->expr->expr_type = EXPR_OP; | |
1018 | block->ext.actual->expr->value.op.op = INTRINSIC_PLUS; | |
1019 | block->ext.actual->expr->value.op.op1 = expr2; | |
9e04287b | 1020 | block->ext.actual->expr->value.op.op2 = offset; |
8e54f139 TB |
1021 | block->ext.actual->expr->ts = expr->ts; |
1022 | ||
1023 | /* C_F_POINTER's 2nd arg: ptr -- and its absent shape=. */ | |
1024 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1025 | block->ext.actual->next->expr = gfc_lval_expr_from_sym (ptr); | |
1026 | block->ext.actual->next->next = gfc_get_actual_arglist (); | |
1027 | ||
1028 | return block; | |
1029 | } | |
1030 | ||
1031 | ||
9e04287b TB |
1032 | /* Calculates the offset to the (idx+1)th element of an array, taking the |
1033 | stride into account. It generates the code: | |
1034 | offset = 0 | |
1035 | do idx2 = 1, rank | |
1036 | offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) * strides(idx2) | |
1037 | end do | |
1038 | offset = offset * byte_stride. */ | |
1039 | ||
1040 | static gfc_code* | |
1041 | finalization_get_offset (gfc_symbol *idx, gfc_symbol *idx2, gfc_symbol *offset, | |
1042 | gfc_symbol *strides, gfc_symbol *sizes, | |
1043 | gfc_symbol *byte_stride, gfc_expr *rank, | |
1044 | gfc_code *block, gfc_namespace *sub_ns) | |
1045 | { | |
1046 | gfc_iterator *iter; | |
1047 | gfc_expr *expr, *expr2; | |
1048 | ||
1049 | /* offset = 0. */ | |
1050 | block->next = XCNEW (gfc_code); | |
1051 | block = block->next; | |
1052 | block->op = EXEC_ASSIGN; | |
1053 | block->loc = gfc_current_locus; | |
1054 | block->expr1 = gfc_lval_expr_from_sym (offset); | |
1055 | block->expr2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1056 | ||
1057 | /* Create loop. */ | |
1058 | iter = gfc_get_iterator (); | |
1059 | iter->var = gfc_lval_expr_from_sym (idx2); | |
1060 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1061 | iter->end = gfc_copy_expr (rank); | |
1062 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1063 | block->next = XCNEW (gfc_code); | |
1064 | block = block->next; | |
1065 | block->op = EXEC_DO; | |
1066 | block->loc = gfc_current_locus; | |
1067 | block->ext.iterator = iter; | |
1068 | block->block = gfc_get_code (); | |
1069 | block->block->op = EXEC_DO; | |
1070 | ||
1071 | /* Loop body: offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) | |
1072 | * strides(idx2). */ | |
1073 | ||
1074 | /* mod (idx, sizes(idx2)). */ | |
1075 | expr = gfc_get_expr (); | |
1076 | expr->expr_type = EXPR_FUNCTION; | |
1077 | expr->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_MOD); | |
1078 | gfc_get_sym_tree ("mod", sub_ns, &expr->symtree, false); | |
1079 | expr->symtree->n.sym->intmod_sym_id = GFC_ISYM_MOD; | |
1080 | expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1081 | expr->symtree->n.sym->attr.intrinsic = 1; | |
1082 | gfc_commit_symbol (expr->symtree->n.sym); | |
1083 | expr->value.function.actual = gfc_get_actual_arglist (); | |
1084 | expr->value.function.actual->expr = gfc_lval_expr_from_sym (idx); | |
1085 | expr->value.function.actual->next = gfc_get_actual_arglist (); | |
1086 | expr->value.function.actual->next->expr = gfc_lval_expr_from_sym (sizes); | |
1087 | expr->value.function.actual->next->expr->ref = gfc_get_ref (); | |
1088 | expr->value.function.actual->next->expr->ref->type = REF_ARRAY; | |
1089 | expr->value.function.actual->next->expr->ref->u.ar.as = sizes->as; | |
1090 | expr->value.function.actual->next->expr->ref->u.ar.type = AR_ELEMENT; | |
1091 | expr->value.function.actual->next->expr->ref->u.ar.dimen = 1; | |
1092 | expr->value.function.actual->next->expr->ref->u.ar.dimen_type[0] | |
1093 | = DIMEN_ELEMENT; | |
1094 | expr->value.function.actual->next->expr->ref->u.ar.start[0] | |
1095 | = gfc_lval_expr_from_sym (idx2); | |
1096 | expr->ts = idx->ts; | |
1097 | ||
1098 | /* (...) / sizes(idx2-1). */ | |
1099 | expr2 = gfc_get_expr (); | |
1100 | expr2->expr_type = EXPR_OP; | |
1101 | expr2->value.op.op = INTRINSIC_DIVIDE; | |
1102 | expr2->value.op.op1 = expr; | |
1103 | expr2->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1104 | expr2->value.op.op2->ref = gfc_get_ref (); | |
1105 | expr2->value.op.op2->ref->type = REF_ARRAY; | |
1106 | expr2->value.op.op2->ref->u.ar.as = sizes->as; | |
1107 | expr2->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1108 | expr2->value.op.op2->ref->u.ar.dimen = 1; | |
1109 | expr2->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1110 | expr2->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1111 | expr2->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1112 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1113 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1114 | = gfc_lval_expr_from_sym (idx2); | |
1115 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1116 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1117 | expr2->value.op.op2->ref->u.ar.start[0]->ts | |
1118 | = expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1119 | expr2->ts = idx->ts; | |
1120 | ||
1121 | /* ... * strides(idx2). */ | |
1122 | expr = gfc_get_expr (); | |
1123 | expr->expr_type = EXPR_OP; | |
1124 | expr->value.op.op = INTRINSIC_TIMES; | |
1125 | expr->value.op.op1 = expr2; | |
1126 | expr->value.op.op2 = gfc_lval_expr_from_sym (strides); | |
1127 | expr->value.op.op2->ref = gfc_get_ref (); | |
1128 | expr->value.op.op2->ref->type = REF_ARRAY; | |
1129 | expr->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1130 | expr->value.op.op2->ref->u.ar.dimen = 1; | |
1131 | expr->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1132 | expr->value.op.op2->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1133 | expr->value.op.op2->ref->u.ar.as = strides->as; | |
1134 | expr->ts = idx->ts; | |
1135 | ||
1136 | /* offset = offset + ... */ | |
1137 | block->block->next = XCNEW (gfc_code); | |
1138 | block->block->next->op = EXEC_ASSIGN; | |
1139 | block->block->next->loc = gfc_current_locus; | |
1140 | block->block->next->expr1 = gfc_lval_expr_from_sym (offset); | |
1141 | block->block->next->expr2 = gfc_get_expr (); | |
1142 | block->block->next->expr2->expr_type = EXPR_OP; | |
1143 | block->block->next->expr2->value.op.op = INTRINSIC_PLUS; | |
1144 | block->block->next->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1145 | block->block->next->expr2->value.op.op2 = expr; | |
1146 | block->block->next->expr2->ts = idx->ts; | |
1147 | ||
1148 | /* After the loop: offset = offset * byte_stride. */ | |
1149 | block->next = XCNEW (gfc_code); | |
1150 | block = block->next; | |
1151 | block->op = EXEC_ASSIGN; | |
1152 | block->loc = gfc_current_locus; | |
1153 | block->expr1 = gfc_lval_expr_from_sym (offset); | |
1154 | block->expr2 = gfc_get_expr (); | |
1155 | block->expr2->expr_type = EXPR_OP; | |
1156 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1157 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1158 | block->expr2->value.op.op2 = gfc_lval_expr_from_sym (byte_stride); | |
1159 | block->expr2->ts = block->expr2->value.op.op1->ts; | |
1160 | return block; | |
1161 | } | |
1162 | ||
1163 | ||
29a7d776 TB |
1164 | /* Insert code of the following form: |
1165 | ||
9e04287b TB |
1166 | block |
1167 | integer(c_intptr_t) :: i | |
1168 | ||
1169 | if ((byte_stride == STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1170 | && (is_contiguous || !final_rank3->attr.contiguous | |
1171 | || final_rank3->as->type != AS_ASSUMED_SHAPE)) | |
1172 | || 0 == STORAGE_SIZE (array)) then | |
1173 | call final_rank3 (array) | |
1174 | else | |
1175 | block | |
1176 | integer(c_intptr_t) :: offset, j | |
1177 | type(t) :: tmp(shape (array)) | |
1178 | ||
1179 | do i = 0, size (array)-1 | |
1180 | offset = obtain_offset(i, strides, sizes, byte_stride) | |
1181 | addr = transfer (c_loc (array), addr) + offset | |
1182 | call c_f_pointer (transfer (addr, cptr), ptr) | |
1183 | ||
1184 | addr = transfer (c_loc (tmp), addr) | |
1185 | + i * STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1186 | call c_f_pointer (transfer (addr, cptr), ptr2) | |
1187 | ptr2 = ptr | |
1188 | end do | |
1189 | call final_rank3 (tmp) | |
1190 | end block | |
1191 | end if | |
1192 | block */ | |
29a7d776 TB |
1193 | |
1194 | static void | |
1195 | finalizer_insert_packed_call (gfc_code *block, gfc_finalizer *fini, | |
9e04287b | 1196 | gfc_symbol *array, gfc_symbol *byte_stride, |
29a7d776 TB |
1197 | gfc_symbol *idx, gfc_symbol *ptr, |
1198 | gfc_symbol *nelem, gfc_symtree *size_intr, | |
9e04287b TB |
1199 | gfc_symbol *strides, gfc_symbol *sizes, |
1200 | gfc_symbol *idx2, gfc_symbol *offset, | |
1201 | gfc_symbol *is_contiguous, gfc_expr *rank, | |
29a7d776 TB |
1202 | gfc_namespace *sub_ns) |
1203 | { | |
1204 | gfc_symbol *tmp_array, *ptr2; | |
9e04287b | 1205 | gfc_expr *size_expr, *offset2, *expr; |
29a7d776 TB |
1206 | gfc_namespace *ns; |
1207 | gfc_iterator *iter; | |
9e04287b | 1208 | gfc_code *block2; |
29a7d776 TB |
1209 | int i; |
1210 | ||
1211 | block->next = XCNEW (gfc_code); | |
1212 | block = block->next; | |
1213 | block->loc = gfc_current_locus; | |
1214 | block->op = EXEC_IF; | |
1215 | ||
1216 | block->block = XCNEW (gfc_code); | |
1217 | block = block->block; | |
1218 | block->loc = gfc_current_locus; | |
1219 | block->op = EXEC_IF; | |
1220 | ||
1221 | /* size_expr = STORAGE_SIZE (...) / NUMERIC_STORAGE_SIZE. */ | |
1222 | size_expr = gfc_get_expr (); | |
1223 | size_expr->where = gfc_current_locus; | |
1224 | size_expr->expr_type = EXPR_OP; | |
1225 | size_expr->value.op.op = INTRINSIC_DIVIDE; | |
1226 | ||
1227 | /* STORAGE_SIZE (array,kind=c_intptr_t). */ | |
1228 | size_expr->value.op.op1 = gfc_get_expr (); | |
1229 | size_expr->value.op.op1->where = gfc_current_locus; | |
1230 | size_expr->value.op.op1->expr_type = EXPR_FUNCTION; | |
1231 | size_expr->value.op.op1->value.function.isym | |
1232 | = gfc_intrinsic_function_by_id (GFC_ISYM_STORAGE_SIZE); | |
1233 | gfc_get_sym_tree ("storage_size", sub_ns, &size_expr->value.op.op1->symtree, | |
1234 | false); | |
9e04287b TB |
1235 | size_expr->value.op.op1->symtree->n.sym->intmod_sym_id |
1236 | = GFC_ISYM_STORAGE_SIZE; | |
29a7d776 TB |
1237 | size_expr->value.op.op1->symtree->n.sym->attr.flavor = FL_PROCEDURE; |
1238 | size_expr->value.op.op1->symtree->n.sym->attr.intrinsic = 1; | |
1239 | gfc_commit_symbol (size_expr->value.op.op1->symtree->n.sym); | |
1240 | size_expr->value.op.op1->value.function.actual = gfc_get_actual_arglist (); | |
1241 | size_expr->value.op.op1->value.function.actual->expr | |
1242 | = gfc_lval_expr_from_sym (array); | |
1243 | size_expr->value.op.op1->value.function.actual->next = gfc_get_actual_arglist (); | |
1244 | size_expr->value.op.op1->value.function.actual->next->expr | |
1245 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1246 | ||
1247 | /* NUMERIC_STORAGE_SIZE. */ | |
1248 | size_expr->value.op.op2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, | |
1249 | gfc_character_storage_size); | |
1250 | size_expr->value.op.op1->ts = size_expr->value.op.op2->ts; | |
1251 | size_expr->ts = size_expr->value.op.op1->ts; | |
1252 | ||
9e04287b TB |
1253 | /* IF condition: (stride == size_expr |
1254 | && ((fini's as->ASSUMED_SIZE && !fini's attr.contiguous) | |
1255 | || is_contiguous) | |
1256 | || 0 == size_expr. */ | |
29a7d776 TB |
1257 | block->expr1 = gfc_get_expr (); |
1258 | block->expr1->expr_type = EXPR_FUNCTION; | |
1259 | block->expr1->ts.type = BT_LOGICAL; | |
9e04287b | 1260 | block->expr1->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1261 | block->expr1->expr_type = EXPR_OP; |
1262 | block->expr1->where = gfc_current_locus; | |
1263 | ||
1264 | block->expr1->value.op.op = INTRINSIC_OR; | |
1265 | ||
9e04287b TB |
1266 | /* byte_stride == size_expr */ |
1267 | expr = gfc_get_expr (); | |
1268 | expr->ts.type = BT_LOGICAL; | |
1269 | expr->ts.kind = gfc_default_logical_kind; | |
1270 | expr->expr_type = EXPR_OP; | |
1271 | expr->where = gfc_current_locus; | |
1272 | expr->value.op.op = INTRINSIC_EQ; | |
1273 | expr->value.op.op1 | |
1274 | = gfc_lval_expr_from_sym (byte_stride); | |
1275 | expr->value.op.op2 = size_expr; | |
1276 | ||
1277 | /* If strides aren't allowd (not assumed shape or CONTIGUOUS), | |
1278 | add is_contiguous check. */ | |
1279 | if (fini->proc_tree->n.sym->formal->sym->as->type != AS_ASSUMED_SHAPE | |
1280 | || fini->proc_tree->n.sym->formal->sym->attr.contiguous) | |
1281 | { | |
1282 | gfc_expr *expr2; | |
1283 | expr2 = gfc_get_expr (); | |
1284 | expr2->ts.type = BT_LOGICAL; | |
1285 | expr2->ts.kind = gfc_default_logical_kind; | |
1286 | expr2->expr_type = EXPR_OP; | |
1287 | expr2->where = gfc_current_locus; | |
1288 | expr2->value.op.op = INTRINSIC_AND; | |
1289 | expr2->value.op.op1 = expr; | |
1290 | expr2->value.op.op2 = gfc_lval_expr_from_sym (is_contiguous); | |
1291 | expr = expr2; | |
1292 | } | |
1293 | ||
1294 | block->expr1->value.op.op1 = expr; | |
29a7d776 TB |
1295 | |
1296 | /* 0 == size_expr */ | |
1297 | block->expr1->value.op.op2 = gfc_get_expr (); | |
29a7d776 | 1298 | block->expr1->value.op.op2->ts.type = BT_LOGICAL; |
9e04287b | 1299 | block->expr1->value.op.op2->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1300 | block->expr1->value.op.op2->expr_type = EXPR_OP; |
1301 | block->expr1->value.op.op2->where = gfc_current_locus; | |
1302 | block->expr1->value.op.op2->value.op.op = INTRINSIC_EQ; | |
1303 | block->expr1->value.op.op2->value.op.op1 = | |
1304 | gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1305 | block->expr1->value.op.op2->value.op.op2 = gfc_copy_expr (size_expr); | |
1306 | ||
1307 | /* IF body: call final subroutine. */ | |
1308 | block->next = XCNEW (gfc_code); | |
1309 | block->next->op = EXEC_CALL; | |
1310 | block->next->loc = gfc_current_locus; | |
1311 | block->next->symtree = fini->proc_tree; | |
1312 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1313 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1314 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
1315 | ||
1316 | /* ELSE. */ | |
1317 | ||
1318 | block->block = XCNEW (gfc_code); | |
1319 | block = block->block; | |
1320 | block->loc = gfc_current_locus; | |
1321 | block->op = EXEC_IF; | |
1322 | ||
1323 | block->next = XCNEW (gfc_code); | |
1324 | block = block->next; | |
1325 | ||
1326 | /* BLOCK ... END BLOCK. */ | |
1327 | block->op = EXEC_BLOCK; | |
1328 | block->loc = gfc_current_locus; | |
1329 | ns = gfc_build_block_ns (sub_ns); | |
1330 | block->ext.block.ns = ns; | |
1331 | block->ext.block.assoc = NULL; | |
1332 | ||
1333 | gfc_get_symbol ("ptr2", ns, &ptr2); | |
1334 | ptr2->ts.type = BT_DERIVED; | |
1335 | ptr2->ts.u.derived = array->ts.u.derived; | |
1336 | ptr2->attr.flavor = FL_VARIABLE; | |
1337 | ptr2->attr.pointer = 1; | |
1338 | ptr2->attr.artificial = 1; | |
1339 | gfc_set_sym_referenced (ptr2); | |
1340 | gfc_commit_symbol (ptr2); | |
1341 | ||
1342 | gfc_get_symbol ("tmp_array", ns, &tmp_array); | |
1343 | tmp_array->ts.type = BT_DERIVED; | |
1344 | tmp_array->ts.u.derived = array->ts.u.derived; | |
1345 | tmp_array->attr.flavor = FL_VARIABLE; | |
29a7d776 TB |
1346 | tmp_array->attr.dimension = 1; |
1347 | tmp_array->attr.artificial = 1; | |
1348 | tmp_array->as = gfc_get_array_spec(); | |
1349 | tmp_array->attr.intent = INTENT_INOUT; | |
1350 | tmp_array->as->type = AS_EXPLICIT; | |
1351 | tmp_array->as->rank = fini->proc_tree->n.sym->formal->sym->as->rank; | |
1352 | ||
1353 | for (i = 0; i < tmp_array->as->rank; i++) | |
1354 | { | |
1355 | gfc_expr *shape_expr; | |
1356 | tmp_array->as->lower[i] = gfc_get_int_expr (gfc_default_integer_kind, | |
1357 | NULL, 1); | |
1358 | /* SIZE (array, dim=i+1, kind=default_kind). */ | |
1359 | shape_expr = gfc_get_expr (); | |
1360 | shape_expr->expr_type = EXPR_FUNCTION; | |
1361 | shape_expr->value.function.isym | |
1362 | = gfc_intrinsic_function_by_id (GFC_ISYM_SIZE); | |
1363 | shape_expr->symtree = size_intr; | |
1364 | shape_expr->value.function.actual = gfc_get_actual_arglist (); | |
1365 | shape_expr->value.function.actual->expr = gfc_lval_expr_from_sym (array); | |
1366 | shape_expr->value.function.actual->next = gfc_get_actual_arglist (); | |
1367 | shape_expr->value.function.actual->next->expr | |
1368 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, i+1); | |
1369 | shape_expr->value.function.actual->next->next = gfc_get_actual_arglist (); | |
1370 | shape_expr->value.function.actual->next->next->expr | |
1371 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); | |
1372 | shape_expr->ts = shape_expr->value.function.isym->ts; | |
1373 | ||
1374 | tmp_array->as->upper[i] = shape_expr; | |
1375 | } | |
1376 | gfc_set_sym_referenced (tmp_array); | |
1377 | gfc_commit_symbol (tmp_array); | |
1378 | ||
1379 | /* Create loop. */ | |
1380 | iter = gfc_get_iterator (); | |
1381 | iter->var = gfc_lval_expr_from_sym (idx); | |
1382 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1383 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1384 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1385 | ||
1386 | block = XCNEW (gfc_code); | |
1387 | ns->code = block; | |
1388 | block->op = EXEC_DO; | |
1389 | block->loc = gfc_current_locus; | |
1390 | block->ext.iterator = iter; | |
1391 | block->block = gfc_get_code (); | |
1392 | block->block->op = EXEC_DO; | |
1393 | ||
9e04287b TB |
1394 | /* Offset calculation for the new array: idx * size of type (in bytes). */ |
1395 | offset2 = gfc_get_expr (); | |
1396 | offset2 = block->ext.actual->expr; | |
1397 | offset2->expr_type = EXPR_OP; | |
1398 | offset2->value.op.op = INTRINSIC_TIMES; | |
1399 | offset2->value.op.op1 = gfc_lval_expr_from_sym (idx); | |
1400 | offset2->value.op.op2 = gfc_copy_expr (size_expr); | |
1401 | offset2->ts = byte_stride->ts; | |
1402 | ||
1403 | /* Offset calculation of "array". */ | |
1404 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1405 | byte_stride, rank, block->block, sub_ns); | |
1406 | ||
29a7d776 TB |
1407 | /* Create code for |
1408 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
1409 | + idx * stride, c_ptr), ptr). */ | |
9e04287b TB |
1410 | block2->next = finalization_scalarizer (array, ptr, |
1411 | gfc_lval_expr_from_sym (offset), | |
1412 | sub_ns); | |
1413 | block2 = block2->next; | |
1414 | block2->next = finalization_scalarizer (tmp_array, ptr2, offset2, sub_ns); | |
1415 | ||
29a7d776 | 1416 | /* ptr2 = ptr. */ |
9e04287b TB |
1417 | block2->next = XCNEW (gfc_code); |
1418 | block2->next->op = EXEC_ASSIGN; | |
1419 | block2->next->loc = gfc_current_locus; | |
1420 | block2->next->expr1 = gfc_lval_expr_from_sym (ptr2); | |
1421 | block2->next->expr2 = gfc_lval_expr_from_sym (ptr); | |
29a7d776 | 1422 | |
9e04287b | 1423 | /* Call now the user's final subroutine. */ |
29a7d776 TB |
1424 | block->next = XCNEW (gfc_code); |
1425 | block = block->next; | |
1426 | block->op = EXEC_CALL; | |
1427 | block->loc = gfc_current_locus; | |
1428 | block->symtree = fini->proc_tree; | |
1429 | block->resolved_sym = fini->proc_tree->n.sym; | |
1430 | block->ext.actual = gfc_get_actual_arglist (); | |
1431 | block->ext.actual->expr = gfc_lval_expr_from_sym (tmp_array); | |
1432 | ||
1433 | if (fini->proc_tree->n.sym->formal->sym->attr.intent == INTENT_IN) | |
1434 | return; | |
1435 | ||
1436 | /* Copy back. */ | |
1437 | ||
1438 | /* Loop. */ | |
1439 | iter = gfc_get_iterator (); | |
1440 | iter->var = gfc_lval_expr_from_sym (idx); | |
1441 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1442 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1443 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1444 | ||
1445 | block->next = XCNEW (gfc_code); | |
1446 | block = block->next; | |
1447 | block->op = EXEC_DO; | |
1448 | block->loc = gfc_current_locus; | |
1449 | block->ext.iterator = iter; | |
1450 | block->block = gfc_get_code (); | |
1451 | block->block->op = EXEC_DO; | |
1452 | ||
9e04287b TB |
1453 | /* Offset calculation of "array". */ |
1454 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1455 | byte_stride, rank, block->block, sub_ns); | |
1456 | ||
29a7d776 TB |
1457 | /* Create code for |
1458 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
1459 | + offset, c_ptr), ptr). */ |
1460 | block2->next = finalization_scalarizer (array, ptr, | |
1461 | gfc_lval_expr_from_sym (offset), | |
1462 | sub_ns); | |
1463 | block2 = block2->next; | |
1464 | block2->next = finalization_scalarizer (tmp_array, ptr2, offset2, sub_ns); | |
1465 | block2 = block2->next; | |
1466 | ||
29a7d776 | 1467 | /* ptr = ptr2. */ |
9e04287b TB |
1468 | block2->next = XCNEW (gfc_code); |
1469 | block2->next->op = EXEC_ASSIGN; | |
1470 | block2->next->loc = gfc_current_locus; | |
1471 | block2->next->expr1 = gfc_lval_expr_from_sym (ptr); | |
1472 | block2->next->expr2 = gfc_lval_expr_from_sym (ptr2); | |
29a7d776 TB |
1473 | } |
1474 | ||
1475 | ||
8e54f139 TB |
1476 | /* Generate the finalization/polymorphic freeing wrapper subroutine for the |
1477 | derived type "derived". The function first calls the approriate FINAL | |
1478 | subroutine, then it DEALLOCATEs (finalizes/frees) the allocatable | |
1479 | components (but not the inherited ones). Last, it calls the wrapper | |
1480 | subroutine of the parent. The generated wrapper procedure takes as argument | |
1481 | an assumed-rank array. | |
1482 | If neither allocatable components nor FINAL subroutines exists, the vtab | |
29a7d776 TB |
1483 | will contain a NULL pointer. |
1484 | The generated function has the form | |
1485 | _final(assumed-rank array, stride, skip_corarray) | |
1486 | where the array has to be contiguous (except of the lowest dimension). The | |
1487 | stride (in bytes) is used to allow different sizes for ancestor types by | |
1488 | skipping over the additionally added components in the scalarizer. If | |
1489 | "fini_coarray" is false, coarray components are not finalized to allow for | |
1490 | the correct semantic with intrinsic assignment. */ | |
8e54f139 TB |
1491 | |
1492 | static void | |
1493 | generate_finalization_wrapper (gfc_symbol *derived, gfc_namespace *ns, | |
1494 | const char *tname, gfc_component *vtab_final) | |
1495 | { | |
9e04287b TB |
1496 | gfc_symbol *final, *array, *fini_coarray, *byte_stride, *sizes, *strides; |
1497 | gfc_symbol *ptr = NULL, *idx, *idx2, *is_contiguous, *offset, *nelem; | |
29a7d776 | 1498 | gfc_symtree *size_intr; |
8e54f139 TB |
1499 | gfc_component *comp; |
1500 | gfc_namespace *sub_ns; | |
9e04287b | 1501 | gfc_code *last_code, *block; |
8e54f139 TB |
1502 | char name[GFC_MAX_SYMBOL_LEN+1]; |
1503 | bool finalizable_comp = false; | |
29a7d776 | 1504 | bool expr_null_wrapper = false; |
9e04287b TB |
1505 | gfc_expr *ancestor_wrapper = NULL, *rank; |
1506 | gfc_iterator *iter; | |
8e54f139 TB |
1507 | |
1508 | /* Search for the ancestor's finalizers. */ | |
1509 | if (derived->attr.extension && derived->components | |
1510 | && (!derived->components->ts.u.derived->attr.abstract | |
1511 | || has_finalizer_component (derived))) | |
1512 | { | |
1513 | gfc_symbol *vtab; | |
1514 | gfc_component *comp; | |
1515 | ||
1516 | vtab = gfc_find_derived_vtab (derived->components->ts.u.derived); | |
1517 | for (comp = vtab->ts.u.derived->components; comp; comp = comp->next) | |
1518 | if (comp->name[0] == '_' && comp->name[1] == 'f') | |
1519 | { | |
1520 | ancestor_wrapper = comp->initializer; | |
1521 | break; | |
1522 | } | |
1523 | } | |
1524 | ||
29a7d776 TB |
1525 | /* No wrapper of the ancestor and no own FINAL subroutines and allocatable |
1526 | components: Return a NULL() expression; we defer this a bit to have have | |
1527 | an interface declaration. */ | |
8e54f139 TB |
1528 | if ((!ancestor_wrapper || ancestor_wrapper->expr_type == EXPR_NULL) |
1529 | && !derived->attr.alloc_comp | |
1530 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers) | |
1531 | && !has_finalizer_component (derived)) | |
29a7d776 TB |
1532 | expr_null_wrapper = true; |
1533 | else | |
1534 | /* Check whether there are new allocatable components. */ | |
1535 | for (comp = derived->components; comp; comp = comp->next) | |
1536 | { | |
1537 | if (comp == derived->components && derived->attr.extension | |
1538 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
8e54f139 TB |
1539 | continue; |
1540 | ||
29a7d776 TB |
1541 | if (comp->ts.type != BT_CLASS && !comp->attr.pointer |
1542 | && (comp->attr.allocatable | |
1543 | || (comp->ts.type == BT_DERIVED | |
1544 | && (comp->ts.u.derived->attr.alloc_comp | |
1545 | || has_finalizer_component (comp->ts.u.derived) | |
1546 | || (comp->ts.u.derived->f2k_derived | |
1547 | && comp->ts.u.derived->f2k_derived->finalizers))))) | |
1548 | finalizable_comp = true; | |
1549 | else if (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
1550 | && CLASS_DATA (comp)->attr.allocatable) | |
1551 | finalizable_comp = true; | |
1552 | } | |
8e54f139 TB |
1553 | |
1554 | /* If there is no new finalizer and no new allocatable, return with | |
1555 | an expr to the ancestor's one. */ | |
29a7d776 TB |
1556 | if (!expr_null_wrapper && !finalizable_comp |
1557 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers)) | |
8e54f139 | 1558 | { |
29a7d776 TB |
1559 | gcc_assert (ancestor_wrapper && ancestor_wrapper->ref == NULL |
1560 | && ancestor_wrapper->expr_type == EXPR_VARIABLE); | |
8e54f139 | 1561 | vtab_final->initializer = gfc_copy_expr (ancestor_wrapper); |
29a7d776 | 1562 | vtab_final->ts.interface = vtab_final->initializer->symtree->n.sym; |
8e54f139 TB |
1563 | return; |
1564 | } | |
1565 | ||
1566 | /* We now create a wrapper, which does the following: | |
1567 | 1. Call the suitable finalization subroutine for this type | |
1568 | 2. Loop over all noninherited allocatable components and noninherited | |
1569 | components with allocatable components and DEALLOCATE those; this will | |
1570 | take care of finalizers, coarray deregistering and allocatable | |
1571 | nested components. | |
1572 | 3. Call the ancestor's finalizer. */ | |
1573 | ||
1574 | /* Declare the wrapper function; it takes an assumed-rank array | |
29a7d776 | 1575 | and a VALUE logical as arguments. */ |
8e54f139 TB |
1576 | |
1577 | /* Set up the namespace. */ | |
1578 | sub_ns = gfc_get_namespace (ns, 0); | |
1579 | sub_ns->sibling = ns->contained; | |
29a7d776 TB |
1580 | if (!expr_null_wrapper) |
1581 | ns->contained = sub_ns; | |
8e54f139 TB |
1582 | sub_ns->resolved = 1; |
1583 | ||
1584 | /* Set up the procedure symbol. */ | |
1585 | sprintf (name, "__final_%s", tname); | |
1586 | gfc_get_symbol (name, sub_ns, &final); | |
1587 | sub_ns->proc_name = final; | |
1588 | final->attr.flavor = FL_PROCEDURE; | |
29a7d776 TB |
1589 | final->attr.function = 1; |
1590 | final->attr.pure = 0; | |
1591 | final->result = final; | |
1592 | final->ts.type = BT_INTEGER; | |
1593 | final->ts.kind = 4; | |
8e54f139 | 1594 | final->attr.artificial = 1; |
29a7d776 | 1595 | final->attr.if_source = expr_null_wrapper ? IFSRC_IFBODY : IFSRC_DECL; |
8e54f139 TB |
1596 | if (ns->proc_name->attr.flavor == FL_MODULE) |
1597 | final->module = ns->proc_name->name; | |
1598 | gfc_set_sym_referenced (final); | |
29a7d776 | 1599 | gfc_commit_symbol (final); |
8e54f139 TB |
1600 | |
1601 | /* Set up formal argument. */ | |
1602 | gfc_get_symbol ("array", sub_ns, &array); | |
1603 | array->ts.type = BT_DERIVED; | |
1604 | array->ts.u.derived = derived; | |
1605 | array->attr.flavor = FL_VARIABLE; | |
1606 | array->attr.dummy = 1; | |
1607 | array->attr.contiguous = 1; | |
1608 | array->attr.dimension = 1; | |
1609 | array->attr.artificial = 1; | |
1610 | array->as = gfc_get_array_spec(); | |
1611 | array->as->type = AS_ASSUMED_RANK; | |
1612 | array->as->rank = -1; | |
1613 | array->attr.intent = INTENT_INOUT; | |
1614 | gfc_set_sym_referenced (array); | |
1615 | final->formal = gfc_get_formal_arglist (); | |
1616 | final->formal->sym = array; | |
1617 | gfc_commit_symbol (array); | |
1618 | ||
29a7d776 | 1619 | /* Set up formal argument. */ |
9e04287b TB |
1620 | gfc_get_symbol ("byte_stride", sub_ns, &byte_stride); |
1621 | byte_stride->ts.type = BT_INTEGER; | |
1622 | byte_stride->ts.kind = gfc_index_integer_kind; | |
1623 | byte_stride->attr.flavor = FL_VARIABLE; | |
1624 | byte_stride->attr.dummy = 1; | |
1625 | byte_stride->attr.value = 1; | |
1626 | byte_stride->attr.artificial = 1; | |
1627 | gfc_set_sym_referenced (byte_stride); | |
29a7d776 | 1628 | final->formal->next = gfc_get_formal_arglist (); |
9e04287b TB |
1629 | final->formal->next->sym = byte_stride; |
1630 | gfc_commit_symbol (byte_stride); | |
29a7d776 TB |
1631 | |
1632 | /* Set up formal argument. */ | |
1633 | gfc_get_symbol ("fini_coarray", sub_ns, &fini_coarray); | |
1634 | fini_coarray->ts.type = BT_LOGICAL; | |
9e04287b | 1635 | fini_coarray->ts.kind = 1; |
29a7d776 TB |
1636 | fini_coarray->attr.flavor = FL_VARIABLE; |
1637 | fini_coarray->attr.dummy = 1; | |
1638 | fini_coarray->attr.value = 1; | |
1639 | fini_coarray->attr.artificial = 1; | |
1640 | gfc_set_sym_referenced (fini_coarray); | |
1641 | final->formal->next->next = gfc_get_formal_arglist (); | |
1642 | final->formal->next->next->sym = fini_coarray; | |
1643 | gfc_commit_symbol (fini_coarray); | |
1644 | ||
1645 | /* Return with a NULL() expression but with an interface which has | |
1646 | the formal arguments. */ | |
1647 | if (expr_null_wrapper) | |
1648 | { | |
1649 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1650 | vtab_final->ts.interface = final; | |
1651 | return; | |
1652 | } | |
1653 | ||
9e04287b TB |
1654 | /* Local variables. */ |
1655 | ||
1656 | gfc_get_symbol ("idx", sub_ns, &idx); | |
1657 | idx->ts.type = BT_INTEGER; | |
1658 | idx->ts.kind = gfc_index_integer_kind; | |
1659 | idx->attr.flavor = FL_VARIABLE; | |
1660 | idx->attr.artificial = 1; | |
1661 | gfc_set_sym_referenced (idx); | |
1662 | gfc_commit_symbol (idx); | |
1663 | ||
1664 | gfc_get_symbol ("idx2", sub_ns, &idx2); | |
1665 | idx2->ts.type = BT_INTEGER; | |
1666 | idx2->ts.kind = gfc_index_integer_kind; | |
1667 | idx2->attr.flavor = FL_VARIABLE; | |
1668 | idx2->attr.artificial = 1; | |
1669 | gfc_set_sym_referenced (idx2); | |
1670 | gfc_commit_symbol (idx2); | |
1671 | ||
1672 | gfc_get_symbol ("offset", sub_ns, &offset); | |
1673 | offset->ts.type = BT_INTEGER; | |
1674 | offset->ts.kind = gfc_index_integer_kind; | |
1675 | offset->attr.flavor = FL_VARIABLE; | |
1676 | offset->attr.artificial = 1; | |
1677 | gfc_set_sym_referenced (offset); | |
1678 | gfc_commit_symbol (offset); | |
1679 | ||
1680 | /* Create RANK expression. */ | |
1681 | rank = gfc_get_expr (); | |
1682 | rank->expr_type = EXPR_FUNCTION; | |
1683 | rank->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_RANK); | |
1684 | gfc_get_sym_tree ("rank", sub_ns, &rank->symtree, false); | |
1685 | rank->symtree->n.sym->intmod_sym_id = GFC_ISYM_RANK; | |
1686 | rank->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1687 | rank->symtree->n.sym->attr.intrinsic = 1; | |
1688 | gfc_commit_symbol (rank->symtree->n.sym); | |
1689 | rank->value.function.actual = gfc_get_actual_arglist (); | |
1690 | rank->value.function.actual->expr = gfc_lval_expr_from_sym (array); | |
1691 | rank->ts = rank->value.function.isym->ts; | |
1692 | gfc_convert_type (rank, &idx->ts, 2); | |
1693 | ||
1694 | /* Create is_contiguous variable. */ | |
1695 | gfc_get_symbol ("is_contiguous", sub_ns, &is_contiguous); | |
1696 | is_contiguous->ts.type = BT_LOGICAL; | |
1697 | is_contiguous->ts.kind = gfc_default_logical_kind; | |
1698 | is_contiguous->attr.flavor = FL_VARIABLE; | |
1699 | is_contiguous->attr.artificial = 1; | |
1700 | gfc_set_sym_referenced (is_contiguous); | |
1701 | gfc_commit_symbol (is_contiguous); | |
1702 | ||
1703 | /* Create "sizes(0..rank)" variable, which contains the multiplied | |
1704 | up extent of the dimensions, i.e. sizes(0) = 1, sizes(1) = extent(dim=1), | |
1705 | sizes(2) = sizes(1) * extent(dim=2) etc. */ | |
1706 | gfc_get_symbol ("sizes", sub_ns, &sizes); | |
1707 | sizes->ts.type = BT_INTEGER; | |
1708 | sizes->ts.kind = gfc_index_integer_kind; | |
1709 | sizes->attr.flavor = FL_VARIABLE; | |
1710 | sizes->attr.dimension = 1; | |
1711 | sizes->attr.artificial = 1; | |
1712 | sizes->as = gfc_get_array_spec(); | |
1713 | sizes->attr.intent = INTENT_INOUT; | |
1714 | sizes->as->type = AS_EXPLICIT; | |
1715 | sizes->as->rank = 1; | |
1716 | sizes->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1717 | sizes->as->upper[0] = gfc_copy_expr (rank); | |
1718 | gfc_set_sym_referenced (sizes); | |
1719 | gfc_commit_symbol (sizes); | |
1720 | ||
1721 | /* Create "strides(1..rank)" variable, which contains the strides per | |
1722 | dimension. */ | |
1723 | gfc_get_symbol ("strides", sub_ns, &strides); | |
1724 | strides->ts.type = BT_INTEGER; | |
1725 | strides->ts.kind = gfc_index_integer_kind; | |
1726 | strides->attr.flavor = FL_VARIABLE; | |
1727 | strides->attr.dimension = 1; | |
1728 | strides->attr.artificial = 1; | |
1729 | strides->as = gfc_get_array_spec(); | |
1730 | strides->attr.intent = INTENT_INOUT; | |
1731 | strides->as->type = AS_EXPLICIT; | |
1732 | strides->as->rank = 1; | |
1733 | strides->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1734 | strides->as->upper[0] = gfc_copy_expr (rank); | |
1735 | gfc_set_sym_referenced (strides); | |
1736 | gfc_commit_symbol (strides); | |
1737 | ||
29a7d776 TB |
1738 | |
1739 | /* Set return value to 0. */ | |
1740 | last_code = XCNEW (gfc_code); | |
1741 | last_code->op = EXEC_ASSIGN; | |
1742 | last_code->loc = gfc_current_locus; | |
1743 | last_code->expr1 = gfc_lval_expr_from_sym (final); | |
1744 | last_code->expr2 = gfc_get_int_expr (4, NULL, 0); | |
1745 | sub_ns->code = last_code; | |
1746 | ||
9e04287b TB |
1747 | /* Set: is_contiguous = .true. */ |
1748 | last_code->next = XCNEW (gfc_code); | |
1749 | last_code = last_code->next; | |
1750 | last_code->op = EXEC_ASSIGN; | |
1751 | last_code->loc = gfc_current_locus; | |
1752 | last_code->expr1 = gfc_lval_expr_from_sym (is_contiguous); | |
1753 | last_code->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1754 | &gfc_current_locus, true); | |
1755 | ||
1756 | /* Set: sizes(0) = 1. */ | |
1757 | last_code->next = XCNEW (gfc_code); | |
1758 | last_code = last_code->next; | |
1759 | last_code->op = EXEC_ASSIGN; | |
1760 | last_code->loc = gfc_current_locus; | |
1761 | last_code->expr1 = gfc_lval_expr_from_sym (sizes); | |
1762 | last_code->expr1->ref = gfc_get_ref (); | |
1763 | last_code->expr1->ref->type = REF_ARRAY; | |
1764 | last_code->expr1->ref->u.ar.type = AR_ELEMENT; | |
1765 | last_code->expr1->ref->u.ar.dimen = 1; | |
1766 | last_code->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1767 | last_code->expr1->ref->u.ar.start[0] | |
1768 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1769 | last_code->expr1->ref->u.ar.as = sizes->as; | |
1770 | last_code->expr2 = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); | |
1771 | ||
1772 | /* Create: | |
1773 | DO idx = 1, rank | |
1774 | strides(idx) = _F._stride (array, dim=idx) | |
1775 | sizes(idx) = sizes(i-1) * size(array, dim=idx, kind=index_kind) | |
1776 | if (strides(idx) /= sizes(i-1)) is_contiguous = .false. | |
1777 | END DO. */ | |
1778 | ||
1779 | /* Create loop. */ | |
1780 | iter = gfc_get_iterator (); | |
1781 | iter->var = gfc_lval_expr_from_sym (idx); | |
1782 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1783 | iter->end = gfc_copy_expr (rank); | |
1784 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1785 | last_code->next = XCNEW (gfc_code); | |
1786 | last_code = last_code->next; | |
1787 | last_code->op = EXEC_DO; | |
1788 | last_code->loc = gfc_current_locus; | |
1789 | last_code->ext.iterator = iter; | |
1790 | last_code->block = gfc_get_code (); | |
1791 | last_code->block->op = EXEC_DO; | |
1792 | ||
1793 | /* strides(idx) = _F._stride(array,dim=idx). */ | |
1794 | last_code->block->next = XCNEW (gfc_code); | |
1795 | block = last_code->block->next; | |
1796 | block->op = EXEC_ASSIGN; | |
1797 | block->loc = gfc_current_locus; | |
1798 | ||
1799 | block->expr1 = gfc_lval_expr_from_sym (strides); | |
1800 | block->expr1->ref = gfc_get_ref (); | |
1801 | block->expr1->ref->type = REF_ARRAY; | |
1802 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1803 | block->expr1->ref->u.ar.dimen = 1; | |
1804 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1805 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1806 | block->expr1->ref->u.ar.as = strides->as; | |
1807 | ||
1808 | block->expr2 = gfc_get_expr (); | |
1809 | block->expr2->expr_type = EXPR_FUNCTION; | |
1810 | block->expr2->value.function.isym | |
1811 | = gfc_intrinsic_function_by_id (GFC_ISYM_STRIDE); | |
1812 | gfc_get_sym_tree (GFC_PREFIX ("stride"), sub_ns, | |
1813 | &block->expr2->symtree, false); | |
1814 | block->expr2->symtree->n.sym->intmod_sym_id = GFC_ISYM_STRIDE; | |
1815 | block->expr2->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1816 | block->expr2->symtree->n.sym->attr.intrinsic = 1; | |
1817 | gfc_commit_symbol (block->expr2->symtree->n.sym); | |
1818 | block->expr2->value.function.actual = gfc_get_actual_arglist (); | |
1819 | block->expr2->value.function.actual->expr = gfc_lval_expr_from_sym (array); | |
1820 | /* dim=idx. */ | |
1821 | block->expr2->value.function.actual->next = gfc_get_actual_arglist (); | |
1822 | block->expr2->value.function.actual->next->expr | |
1823 | = gfc_lval_expr_from_sym (idx); | |
1824 | block->expr2->ts = block->expr2->value.function.isym->ts; | |
1825 | ||
1826 | /* sizes(idx) = sizes(idx-1) * size(array,dim=idx, kind=index_kind). */ | |
1827 | block->next = XCNEW (gfc_code); | |
1828 | block = block->next; | |
1829 | block->op = EXEC_ASSIGN; | |
1830 | block->loc = gfc_current_locus; | |
1831 | ||
1832 | /* sizes(idx) = ... */ | |
1833 | block->expr1 = gfc_lval_expr_from_sym (sizes); | |
1834 | block->expr1->ref = gfc_get_ref (); | |
1835 | block->expr1->ref->type = REF_ARRAY; | |
1836 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1837 | block->expr1->ref->u.ar.dimen = 1; | |
1838 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1839 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1840 | block->expr1->ref->u.ar.as = sizes->as; | |
1841 | ||
1842 | block->expr2 = gfc_get_expr (); | |
1843 | block->expr2->expr_type = EXPR_OP; | |
1844 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1845 | ||
1846 | /* sizes(idx-1). */ | |
1847 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); | |
1848 | block->expr2->value.op.op1->ref = gfc_get_ref (); | |
1849 | block->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1850 | block->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
1851 | block->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1852 | block->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1853 | block->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1854 | block->expr2->value.op.op1->ref->u.ar.start[0] = gfc_get_expr (); | |
1855 | block->expr2->value.op.op1->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1856 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1857 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1 | |
1858 | = gfc_lval_expr_from_sym (idx); | |
1859 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op2 | |
1860 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1861 | block->expr2->value.op.op1->ref->u.ar.start[0]->ts | |
1862 | = block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1->ts; | |
1863 | ||
1864 | /* size(array, dim=idx, kind=index_kind). */ | |
1865 | block->expr2->value.op.op2 = gfc_get_expr (); | |
1866 | block->expr2->value.op.op2->expr_type = EXPR_FUNCTION; | |
1867 | block->expr2->value.op.op2->value.function.isym | |
1868 | = gfc_intrinsic_function_by_id (GFC_ISYM_SIZE); | |
1869 | gfc_get_sym_tree ("size", sub_ns, &block->expr2->value.op.op2->symtree, | |
1870 | false); | |
1871 | size_intr = block->expr2->value.op.op2->symtree; | |
1872 | block->expr2->value.op.op2->symtree->n.sym->intmod_sym_id = GFC_ISYM_SIZE; | |
1873 | block->expr2->value.op.op2->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1874 | block->expr2->value.op.op2->symtree->n.sym->attr.intrinsic = 1; | |
1875 | gfc_commit_symbol (block->expr2->value.op.op2->symtree->n.sym); | |
1876 | block->expr2->value.op.op2->value.function.actual | |
1877 | = gfc_get_actual_arglist (); | |
1878 | block->expr2->value.op.op2->value.function.actual->expr | |
1879 | = gfc_lval_expr_from_sym (array); | |
1880 | /* dim=idx. */ | |
1881 | block->expr2->value.op.op2->value.function.actual->next | |
1882 | = gfc_get_actual_arglist (); | |
1883 | block->expr2->value.op.op2->value.function.actual->next->expr | |
1884 | = gfc_lval_expr_from_sym (idx); | |
1885 | /* kind=c_intptr_t. */ | |
1886 | block->expr2->value.op.op2->value.function.actual->next->next | |
1887 | = gfc_get_actual_arglist (); | |
1888 | block->expr2->value.op.op2->value.function.actual->next->next->expr | |
1889 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1890 | block->expr2->value.op.op2->ts = idx->ts; | |
1891 | block->expr2->ts = idx->ts; | |
1892 | ||
1893 | /* if (strides(idx) /= sizes(idx-1)) is_contiguous = .false. */ | |
1894 | block->next = XCNEW (gfc_code); | |
1895 | block = block->next; | |
1896 | block->loc = gfc_current_locus; | |
1897 | block->op = EXEC_IF; | |
1898 | ||
1899 | block->block = XCNEW (gfc_code); | |
1900 | block = block->block; | |
1901 | block->loc = gfc_current_locus; | |
1902 | block->op = EXEC_IF; | |
1903 | ||
1904 | /* if condition: strides(idx) /= sizes(idx-1). */ | |
1905 | block->expr1 = gfc_get_expr (); | |
1906 | block->expr1->ts.type = BT_LOGICAL; | |
1907 | block->expr1->ts.kind = gfc_default_logical_kind; | |
1908 | block->expr1->expr_type = EXPR_OP; | |
1909 | block->expr1->where = gfc_current_locus; | |
1910 | block->expr1->value.op.op = INTRINSIC_NE; | |
1911 | ||
1912 | block->expr1->value.op.op1 = gfc_lval_expr_from_sym (strides); | |
1913 | block->expr1->value.op.op1->ref = gfc_get_ref (); | |
1914 | block->expr1->value.op.op1->ref->type = REF_ARRAY; | |
1915 | block->expr1->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1916 | block->expr1->value.op.op1->ref->u.ar.dimen = 1; | |
1917 | block->expr1->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1918 | block->expr1->value.op.op1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1919 | block->expr1->value.op.op1->ref->u.ar.as = strides->as; | |
1920 | ||
1921 | block->expr1->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1922 | block->expr1->value.op.op2->ref = gfc_get_ref (); | |
1923 | block->expr1->value.op.op2->ref->type = REF_ARRAY; | |
1924 | block->expr1->value.op.op2->ref->u.ar.as = sizes->as; | |
1925 | block->expr1->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1926 | block->expr1->value.op.op2->ref->u.ar.dimen = 1; | |
1927 | block->expr1->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1928 | block->expr1->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1929 | block->expr1->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1930 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; | |
1931 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1932 | = gfc_lval_expr_from_sym (idx); | |
1933 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1934 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1935 | block->expr1->value.op.op2->ref->u.ar.start[0]->ts | |
1936 | = block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1937 | ||
1938 | /* if body: is_contiguous = .false. */ | |
1939 | block->next = XCNEW (gfc_code); | |
1940 | block = block->next; | |
1941 | block->op = EXEC_ASSIGN; | |
1942 | block->loc = gfc_current_locus; | |
1943 | block->expr1 = gfc_lval_expr_from_sym (is_contiguous); | |
1944 | block->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1945 | &gfc_current_locus, false); | |
1946 | ||
8e54f139 TB |
1947 | /* Obtain the size (number of elements) of "array" MINUS ONE, |
1948 | which is used in the scalarization. */ | |
1949 | gfc_get_symbol ("nelem", sub_ns, &nelem); | |
1950 | nelem->ts.type = BT_INTEGER; | |
1951 | nelem->ts.kind = gfc_index_integer_kind; | |
1952 | nelem->attr.flavor = FL_VARIABLE; | |
1953 | nelem->attr.artificial = 1; | |
1954 | gfc_set_sym_referenced (nelem); | |
1955 | gfc_commit_symbol (nelem); | |
1956 | ||
9e04287b | 1957 | /* nelem = sizes (rank) - 1. */ |
29a7d776 TB |
1958 | last_code->next = XCNEW (gfc_code); |
1959 | last_code = last_code->next; | |
8e54f139 TB |
1960 | last_code->op = EXEC_ASSIGN; |
1961 | last_code->loc = gfc_current_locus; | |
1962 | ||
1963 | last_code->expr1 = gfc_lval_expr_from_sym (nelem); | |
1964 | ||
1965 | last_code->expr2 = gfc_get_expr (); | |
1966 | last_code->expr2->expr_type = EXPR_OP; | |
1967 | last_code->expr2->value.op.op = INTRINSIC_MINUS; | |
1968 | last_code->expr2->value.op.op2 | |
1969 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1970 | last_code->expr2->ts = last_code->expr2->value.op.op2->ts; | |
1971 | ||
9e04287b TB |
1972 | last_code->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1973 | last_code->expr2->value.op.op1->ref = gfc_get_ref (); | |
1974 | last_code->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1975 | last_code->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1976 | last_code->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1977 | last_code->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1978 | last_code->expr2->value.op.op1->ref->u.ar.start[0] = gfc_copy_expr (rank); | |
1979 | last_code->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
8e54f139 TB |
1980 | |
1981 | /* Call final subroutines. We now generate code like: | |
1982 | use iso_c_binding | |
1983 | integer, pointer :: ptr | |
1984 | type(c_ptr) :: cptr | |
1985 | integer(c_intptr_t) :: i, addr | |
1986 | ||
1987 | select case (rank (array)) | |
1988 | case (3) | |
29a7d776 | 1989 | ! If needed, the array is packed |
8e54f139 TB |
1990 | call final_rank3 (array) |
1991 | case default: | |
1992 | do i = 0, size (array)-1 | |
29a7d776 | 1993 | addr = transfer (c_loc (array), addr) + i * stride |
8e54f139 TB |
1994 | call c_f_pointer (transfer (addr, cptr), ptr) |
1995 | call elemental_final (ptr) | |
1996 | end do | |
1997 | end select */ | |
1998 | ||
1999 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2000 | { | |
2001 | gfc_finalizer *fini, *fini_elem = NULL; | |
29a7d776 TB |
2002 | |
2003 | gfc_get_symbol ("ptr", sub_ns, &ptr); | |
2004 | ptr->ts.type = BT_DERIVED; | |
2005 | ptr->ts.u.derived = derived; | |
2006 | ptr->attr.flavor = FL_VARIABLE; | |
2007 | ptr->attr.pointer = 1; | |
2008 | ptr->attr.artificial = 1; | |
2009 | gfc_set_sym_referenced (ptr); | |
2010 | gfc_commit_symbol (ptr); | |
2011 | ||
8e54f139 TB |
2012 | /* SELECT CASE (RANK (array)). */ |
2013 | last_code->next = XCNEW (gfc_code); | |
2014 | last_code = last_code->next; | |
2015 | last_code->op = EXEC_SELECT; | |
2016 | last_code->loc = gfc_current_locus; | |
9e04287b TB |
2017 | last_code->expr1 = gfc_copy_expr (rank); |
2018 | block = NULL; | |
8e54f139 TB |
2019 | |
2020 | for (fini = derived->f2k_derived->finalizers; fini; fini = fini->next) | |
2021 | { | |
2022 | if (fini->proc_tree->n.sym->attr.elemental) | |
2023 | { | |
2024 | fini_elem = fini; | |
2025 | continue; | |
2026 | } | |
2027 | ||
2028 | /* CASE (fini_rank). */ | |
2029 | if (block) | |
2030 | { | |
2031 | block->block = XCNEW (gfc_code); | |
2032 | block = block->block; | |
2033 | } | |
2034 | else | |
2035 | { | |
2036 | block = XCNEW (gfc_code); | |
2037 | last_code->block = block; | |
2038 | } | |
2039 | block->loc = gfc_current_locus; | |
2040 | block->op = EXEC_SELECT; | |
2041 | block->ext.block.case_list = gfc_get_case (); | |
2042 | block->ext.block.case_list->where = gfc_current_locus; | |
2043 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
2044 | block->ext.block.case_list->low | |
2045 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, | |
2046 | fini->proc_tree->n.sym->formal->sym->as->rank); | |
2047 | else | |
2048 | block->ext.block.case_list->low | |
2049 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); | |
2050 | block->ext.block.case_list->high | |
2051 | = block->ext.block.case_list->low; | |
2052 | ||
29a7d776 TB |
2053 | /* CALL fini_rank (array) - possibly with packing. */ |
2054 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
9e04287b TB |
2055 | finalizer_insert_packed_call (block, fini, array, byte_stride, |
2056 | idx, ptr, nelem, size_intr, strides, | |
2057 | sizes, idx2, offset, is_contiguous, | |
2058 | rank, sub_ns); | |
29a7d776 TB |
2059 | else |
2060 | { | |
2061 | block->next = XCNEW (gfc_code); | |
2062 | block->next->op = EXEC_CALL; | |
2063 | block->next->loc = gfc_current_locus; | |
2064 | block->next->symtree = fini->proc_tree; | |
2065 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
2066 | block->next->ext.actual = gfc_get_actual_arglist (); | |
2067 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
2068 | } | |
8e54f139 TB |
2069 | } |
2070 | ||
2071 | /* Elemental call - scalarized. */ | |
2072 | if (fini_elem) | |
2073 | { | |
8e54f139 TB |
2074 | /* CASE DEFAULT. */ |
2075 | if (block) | |
2076 | { | |
2077 | block->block = XCNEW (gfc_code); | |
2078 | block = block->block; | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | block = XCNEW (gfc_code); | |
2083 | last_code->block = block; | |
2084 | } | |
2085 | block->loc = gfc_current_locus; | |
2086 | block->op = EXEC_SELECT; | |
2087 | block->ext.block.case_list = gfc_get_case (); | |
2088 | ||
8e54f139 TB |
2089 | /* Create loop. */ |
2090 | iter = gfc_get_iterator (); | |
2091 | iter->var = gfc_lval_expr_from_sym (idx); | |
2092 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2093 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2094 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
2095 | block->next = XCNEW (gfc_code); | |
2096 | block = block->next; | |
2097 | block->op = EXEC_DO; | |
2098 | block->loc = gfc_current_locus; | |
2099 | block->ext.iterator = iter; | |
2100 | block->block = gfc_get_code (); | |
2101 | block->block->op = EXEC_DO; | |
2102 | ||
9e04287b TB |
2103 | /* Offset calculation. */ |
2104 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2105 | byte_stride, rank, block->block, | |
2106 | sub_ns); | |
2107 | ||
8e54f139 TB |
2108 | /* Create code for |
2109 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
2110 | + offset, c_ptr), ptr). */ |
2111 | block->next | |
2112 | = finalization_scalarizer (array, ptr, | |
2113 | gfc_lval_expr_from_sym (offset), | |
2114 | sub_ns); | |
2115 | block = block->next; | |
8e54f139 TB |
2116 | |
2117 | /* CALL final_elemental (array). */ | |
2118 | block->next = XCNEW (gfc_code); | |
2119 | block = block->next; | |
2120 | block->op = EXEC_CALL; | |
2121 | block->loc = gfc_current_locus; | |
2122 | block->symtree = fini_elem->proc_tree; | |
2123 | block->resolved_sym = fini_elem->proc_sym; | |
2124 | block->ext.actual = gfc_get_actual_arglist (); | |
2125 | block->ext.actual->expr = gfc_lval_expr_from_sym (ptr); | |
2126 | } | |
2127 | } | |
2128 | ||
2129 | /* Finalize and deallocate allocatable components. The same manual | |
2130 | scalarization is used as above. */ | |
2131 | ||
2132 | if (finalizable_comp) | |
2133 | { | |
2134 | gfc_symbol *stat; | |
2135 | gfc_code *block = NULL; | |
8e54f139 TB |
2136 | |
2137 | if (!ptr) | |
2138 | { | |
2139 | gfc_get_symbol ("ptr", sub_ns, &ptr); | |
2140 | ptr->ts.type = BT_DERIVED; | |
2141 | ptr->ts.u.derived = derived; | |
2142 | ptr->attr.flavor = FL_VARIABLE; | |
2143 | ptr->attr.pointer = 1; | |
2144 | ptr->attr.artificial = 1; | |
2145 | gfc_set_sym_referenced (ptr); | |
2146 | gfc_commit_symbol (ptr); | |
2147 | } | |
2148 | ||
2149 | gfc_get_symbol ("ignore", sub_ns, &stat); | |
2150 | stat->attr.flavor = FL_VARIABLE; | |
2151 | stat->attr.artificial = 1; | |
2152 | stat->ts.type = BT_INTEGER; | |
2153 | stat->ts.kind = gfc_default_integer_kind; | |
2154 | gfc_set_sym_referenced (stat); | |
2155 | gfc_commit_symbol (stat); | |
2156 | ||
2157 | /* Create loop. */ | |
2158 | iter = gfc_get_iterator (); | |
2159 | iter->var = gfc_lval_expr_from_sym (idx); | |
2160 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2161 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2162 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
2163 | last_code->next = XCNEW (gfc_code); | |
2164 | last_code = last_code->next; | |
2165 | last_code->op = EXEC_DO; | |
2166 | last_code->loc = gfc_current_locus; | |
2167 | last_code->ext.iterator = iter; | |
2168 | last_code->block = gfc_get_code (); | |
2169 | last_code->block->op = EXEC_DO; | |
2170 | ||
9e04287b TB |
2171 | /* Offset calculation. */ |
2172 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2173 | byte_stride, rank, last_code->block, | |
2174 | sub_ns); | |
2175 | ||
8e54f139 TB |
2176 | /* Create code for |
2177 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
29a7d776 | 2178 | + idx * stride, c_ptr), ptr). */ |
9e04287b TB |
2179 | block->next = finalization_scalarizer (array, ptr, |
2180 | gfc_lval_expr_from_sym(offset), | |
2181 | sub_ns); | |
2182 | block = block->next; | |
8e54f139 TB |
2183 | |
2184 | for (comp = derived->components; comp; comp = comp->next) | |
2185 | { | |
2186 | if (comp == derived->components && derived->attr.extension | |
2187 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2188 | continue; | |
2189 | ||
2190 | finalize_component (gfc_lval_expr_from_sym (ptr), derived, comp, | |
29a7d776 | 2191 | stat, fini_coarray, &block); |
8e54f139 TB |
2192 | if (!last_code->block->next) |
2193 | last_code->block->next = block; | |
2194 | } | |
2195 | ||
2196 | } | |
2197 | ||
2198 | /* Call the finalizer of the ancestor. */ | |
2199 | if (ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2200 | { | |
2201 | last_code->next = XCNEW (gfc_code); | |
2202 | last_code = last_code->next; | |
2203 | last_code->op = EXEC_CALL; | |
2204 | last_code->loc = gfc_current_locus; | |
2205 | last_code->symtree = ancestor_wrapper->symtree; | |
2206 | last_code->resolved_sym = ancestor_wrapper->symtree->n.sym; | |
2207 | ||
2208 | last_code->ext.actual = gfc_get_actual_arglist (); | |
2209 | last_code->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
29a7d776 | 2210 | last_code->ext.actual->next = gfc_get_actual_arglist (); |
9e04287b | 2211 | last_code->ext.actual->next->expr = gfc_lval_expr_from_sym (byte_stride); |
29a7d776 TB |
2212 | last_code->ext.actual->next->next = gfc_get_actual_arglist (); |
2213 | last_code->ext.actual->next->next->expr | |
2214 | = gfc_lval_expr_from_sym (fini_coarray); | |
8e54f139 TB |
2215 | } |
2216 | ||
9e04287b | 2217 | gfc_free_expr (rank); |
8e54f139 TB |
2218 | vtab_final->initializer = gfc_lval_expr_from_sym (final); |
2219 | vtab_final->ts.interface = final; | |
2220 | } | |
2221 | ||
2222 | ||
88ce8031 | 2223 | /* Add procedure pointers for all type-bound procedures to a vtab. */ |
d15bac21 JW |
2224 | |
2225 | static void | |
88ce8031 | 2226 | add_procs_to_declared_vtab (gfc_symbol *derived, gfc_symbol *vtype) |
d15bac21 | 2227 | { |
d15bac21 JW |
2228 | gfc_symbol* super_type; |
2229 | ||
88ce8031 | 2230 | super_type = gfc_get_derived_super_type (derived); |
d15bac21 | 2231 | |
88ce8031 | 2232 | if (super_type && (super_type != derived)) |
d15bac21 | 2233 | { |
88ce8031 JW |
2234 | /* Make sure that the PPCs appear in the same order as in the parent. */ |
2235 | copy_vtab_proc_comps (super_type, vtype); | |
1d0134b3 | 2236 | /* Only needed to get the PPC initializers right. */ |
88ce8031 JW |
2237 | add_procs_to_declared_vtab (super_type, vtype); |
2238 | } | |
d15bac21 | 2239 | |
88ce8031 JW |
2240 | if (derived->f2k_derived && derived->f2k_derived->tb_sym_root) |
2241 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_sym_root, vtype); | |
d15bac21 | 2242 | |
88ce8031 JW |
2243 | if (derived->f2k_derived && derived->f2k_derived->tb_uop_root) |
2244 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_uop_root, vtype); | |
d15bac21 JW |
2245 | } |
2246 | ||
2247 | ||
29a7d776 | 2248 | /* Find or generate the symbol for a derived type's vtab. */ |
d15bac21 JW |
2249 | |
2250 | gfc_symbol * | |
88ce8031 | 2251 | gfc_find_derived_vtab (gfc_symbol *derived) |
d15bac21 JW |
2252 | { |
2253 | gfc_namespace *ns; | |
50f30801 | 2254 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL, *def_init = NULL; |
611c64f0 | 2255 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
c49ea23d | 2256 | |
8b704316 | 2257 | /* Find the top-level namespace. */ |
e10f52d0 | 2258 | for (ns = gfc_current_ns; ns; ns = ns->parent) |
d15bac21 JW |
2259 | if (!ns->parent) |
2260 | break; | |
2261 | ||
e10f52d0 | 2262 | /* If the type is a class container, use the underlying derived type. */ |
8b704316 | 2263 | if (!derived->attr.unlimited_polymorphic && derived->attr.is_class) |
e10f52d0 | 2264 | derived = gfc_get_derived_super_type (derived); |
8b704316 | 2265 | |
d15bac21 JW |
2266 | if (ns) |
2267 | { | |
4fa02692 | 2268 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; |
29a7d776 | 2269 | |
4fa02692 | 2270 | get_unique_hashed_string (tname, derived); |
b04533af | 2271 | sprintf (name, "__vtab_%s", tname); |
611c64f0 JW |
2272 | |
2273 | /* Look for the vtab symbol in various namespaces. */ | |
2274 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
2275 | if (vtab == NULL) | |
2276 | gfc_find_symbol (name, ns, 0, &vtab); | |
2277 | if (vtab == NULL) | |
2278 | gfc_find_symbol (name, derived->ns, 0, &vtab); | |
d15bac21 JW |
2279 | |
2280 | if (vtab == NULL) | |
2281 | { | |
2282 | gfc_get_symbol (name, ns, &vtab); | |
2283 | vtab->ts.type = BT_DERIVED; | |
22c30bc0 | 2284 | if (gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
e10f52d0 JW |
2285 | &gfc_current_locus) == FAILURE) |
2286 | goto cleanup; | |
d15bac21 | 2287 | vtab->attr.target = 1; |
95f5c775 | 2288 | vtab->attr.save = SAVE_IMPLICIT; |
d15bac21 | 2289 | vtab->attr.vtab = 1; |
f3f98a1e | 2290 | vtab->attr.access = ACCESS_PUBLIC; |
d15bac21 | 2291 | gfc_set_sym_referenced (vtab); |
b04533af | 2292 | sprintf (name, "__vtype_%s", tname); |
29a7d776 | 2293 | |
d15bac21 JW |
2294 | gfc_find_symbol (name, ns, 0, &vtype); |
2295 | if (vtype == NULL) | |
2296 | { | |
2297 | gfc_component *c; | |
2298 | gfc_symbol *parent = NULL, *parent_vtab = NULL; | |
2299 | ||
2300 | gfc_get_symbol (name, ns, &vtype); | |
2301 | if (gfc_add_flavor (&vtype->attr, FL_DERIVED, | |
2302 | NULL, &gfc_current_locus) == FAILURE) | |
81fb8a48 | 2303 | goto cleanup; |
f3f98a1e | 2304 | vtype->attr.access = ACCESS_PUBLIC; |
611c64f0 | 2305 | vtype->attr.vtype = 1; |
d15bac21 JW |
2306 | gfc_set_sym_referenced (vtype); |
2307 | ||
b04533af JW |
2308 | /* Add component '_hash'. */ |
2309 | if (gfc_add_component (vtype, "_hash", &c) == FAILURE) | |
81fb8a48 | 2310 | goto cleanup; |
d15bac21 JW |
2311 | c->ts.type = BT_INTEGER; |
2312 | c->ts.kind = 4; | |
2313 | c->attr.access = ACCESS_PRIVATE; | |
2314 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2315 | NULL, derived->hash_value); | |
2316 | ||
b04533af JW |
2317 | /* Add component '_size'. */ |
2318 | if (gfc_add_component (vtype, "_size", &c) == FAILURE) | |
81fb8a48 | 2319 | goto cleanup; |
d15bac21 JW |
2320 | c->ts.type = BT_INTEGER; |
2321 | c->ts.kind = 4; | |
2322 | c->attr.access = ACCESS_PRIVATE; | |
2323 | /* Remember the derived type in ts.u.derived, | |
2324 | so that the correct initializer can be set later on | |
2325 | (in gfc_conv_structure). */ | |
2326 | c->ts.u.derived = derived; | |
2327 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2328 | NULL, 0); | |
2329 | ||
b04533af JW |
2330 | /* Add component _extends. */ |
2331 | if (gfc_add_component (vtype, "_extends", &c) == FAILURE) | |
81fb8a48 | 2332 | goto cleanup; |
d15bac21 JW |
2333 | c->attr.pointer = 1; |
2334 | c->attr.access = ACCESS_PRIVATE; | |
8b704316 PT |
2335 | if (!derived->attr.unlimited_polymorphic) |
2336 | parent = gfc_get_derived_super_type (derived); | |
2337 | else | |
2338 | parent = NULL; | |
2339 | ||
d15bac21 JW |
2340 | if (parent) |
2341 | { | |
88ce8031 | 2342 | parent_vtab = gfc_find_derived_vtab (parent); |
d15bac21 JW |
2343 | c->ts.type = BT_DERIVED; |
2344 | c->ts.u.derived = parent_vtab->ts.u.derived; | |
2345 | c->initializer = gfc_get_expr (); | |
2346 | c->initializer->expr_type = EXPR_VARIABLE; | |
2347 | gfc_find_sym_tree (parent_vtab->name, parent_vtab->ns, | |
2348 | 0, &c->initializer->symtree); | |
2349 | } | |
2350 | else | |
2351 | { | |
2352 | c->ts.type = BT_DERIVED; | |
2353 | c->ts.u.derived = vtype; | |
2354 | c->initializer = gfc_get_null_expr (NULL); | |
2355 | } | |
2356 | ||
8b704316 PT |
2357 | if (!derived->attr.unlimited_polymorphic |
2358 | && derived->components == NULL | |
2359 | && !derived->attr.zero_comp) | |
611c64f0 JW |
2360 | { |
2361 | /* At this point an error must have occurred. | |
2362 | Prevent further errors on the vtype components. */ | |
2363 | found_sym = vtab; | |
2364 | goto have_vtype; | |
2365 | } | |
2366 | ||
b04533af JW |
2367 | /* Add component _def_init. */ |
2368 | if (gfc_add_component (vtype, "_def_init", &c) == FAILURE) | |
50f30801 JW |
2369 | goto cleanup; |
2370 | c->attr.pointer = 1; | |
8e54f139 | 2371 | c->attr.artificial = 1; |
50f30801 JW |
2372 | c->attr.access = ACCESS_PRIVATE; |
2373 | c->ts.type = BT_DERIVED; | |
2374 | c->ts.u.derived = derived; | |
8b704316 PT |
2375 | if (derived->attr.unlimited_polymorphic |
2376 | || derived->attr.abstract) | |
611c64f0 | 2377 | c->initializer = gfc_get_null_expr (NULL); |
50f30801 JW |
2378 | else |
2379 | { | |
2380 | /* Construct default initialization variable. */ | |
b04533af | 2381 | sprintf (name, "__def_init_%s", tname); |
50f30801 JW |
2382 | gfc_get_symbol (name, ns, &def_init); |
2383 | def_init->attr.target = 1; | |
8e54f139 | 2384 | def_init->attr.artificial = 1; |
95f5c775 | 2385 | def_init->attr.save = SAVE_IMPLICIT; |
50f30801 | 2386 | def_init->attr.access = ACCESS_PUBLIC; |
22c30bc0 | 2387 | def_init->attr.flavor = FL_VARIABLE; |
50f30801 JW |
2388 | gfc_set_sym_referenced (def_init); |
2389 | def_init->ts.type = BT_DERIVED; | |
2390 | def_init->ts.u.derived = derived; | |
2391 | def_init->value = gfc_default_initializer (&def_init->ts); | |
2392 | ||
2393 | c->initializer = gfc_lval_expr_from_sym (def_init); | |
2394 | } | |
2395 | ||
b04533af JW |
2396 | /* Add component _copy. */ |
2397 | if (gfc_add_component (vtype, "_copy", &c) == FAILURE) | |
611c64f0 JW |
2398 | goto cleanup; |
2399 | c->attr.proc_pointer = 1; | |
2400 | c->attr.access = ACCESS_PRIVATE; | |
2401 | c->tb = XCNEW (gfc_typebound_proc); | |
2402 | c->tb->ppc = 1; | |
8b704316 PT |
2403 | if (derived->attr.unlimited_polymorphic |
2404 | || derived->attr.abstract) | |
611c64f0 JW |
2405 | c->initializer = gfc_get_null_expr (NULL); |
2406 | else | |
2407 | { | |
2408 | /* Set up namespace. */ | |
2409 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2410 | sub_ns->sibling = ns->contained; | |
2411 | ns->contained = sub_ns; | |
2412 | sub_ns->resolved = 1; | |
2413 | /* Set up procedure symbol. */ | |
b04533af | 2414 | sprintf (name, "__copy_%s", tname); |
611c64f0 JW |
2415 | gfc_get_symbol (name, sub_ns, ©); |
2416 | sub_ns->proc_name = copy; | |
2417 | copy->attr.flavor = FL_PROCEDURE; | |
cf651ca2 | 2418 | copy->attr.subroutine = 1; |
0b73eb81 | 2419 | copy->attr.pure = 1; |
8e54f139 | 2420 | copy->attr.artificial = 1; |
611c64f0 | 2421 | copy->attr.if_source = IFSRC_DECL; |
c49ea23d PT |
2422 | /* This is elemental so that arrays are automatically |
2423 | treated correctly by the scalarizer. */ | |
2424 | copy->attr.elemental = 1; | |
844ba455 JW |
2425 | if (ns->proc_name->attr.flavor == FL_MODULE) |
2426 | copy->module = ns->proc_name->name; | |
611c64f0 JW |
2427 | gfc_set_sym_referenced (copy); |
2428 | /* Set up formal arguments. */ | |
2429 | gfc_get_symbol ("src", sub_ns, &src); | |
2430 | src->ts.type = BT_DERIVED; | |
2431 | src->ts.u.derived = derived; | |
2432 | src->attr.flavor = FL_VARIABLE; | |
2433 | src->attr.dummy = 1; | |
8e54f139 TB |
2434 | src->attr.artificial = 1; |
2435 | src->attr.intent = INTENT_IN; | |
611c64f0 JW |
2436 | gfc_set_sym_referenced (src); |
2437 | copy->formal = gfc_get_formal_arglist (); | |
2438 | copy->formal->sym = src; | |
2439 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2440 | dst->ts.type = BT_DERIVED; | |
2441 | dst->ts.u.derived = derived; | |
2442 | dst->attr.flavor = FL_VARIABLE; | |
2443 | dst->attr.dummy = 1; | |
8e54f139 | 2444 | dst->attr.artificial = 1; |
c49ea23d | 2445 | dst->attr.intent = INTENT_OUT; |
611c64f0 JW |
2446 | gfc_set_sym_referenced (dst); |
2447 | copy->formal->next = gfc_get_formal_arglist (); | |
2448 | copy->formal->next->sym = dst; | |
2449 | /* Set up code. */ | |
2450 | sub_ns->code = gfc_get_code (); | |
2e85ae0d | 2451 | sub_ns->code->op = EXEC_INIT_ASSIGN; |
611c64f0 JW |
2452 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2453 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2454 | /* Set initializer. */ | |
2455 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2456 | c->ts.interface = copy; | |
2457 | } | |
2458 | ||
8e54f139 TB |
2459 | /* Add component _final, which contains a procedure pointer to |
2460 | a wrapper which handles both the freeing of allocatable | |
2461 | components and the calls to finalization subroutines. | |
2462 | Note: The actual wrapper function can only be generated | |
2463 | at resolution time. */ | |
d6cd8711 | 2464 | /* FIXME: Enable ABI-breaking "_final" generation. */ |
8b704316 | 2465 | if (0) |
d6cd8711 | 2466 | { |
8e54f139 TB |
2467 | if (gfc_add_component (vtype, "_final", &c) == FAILURE) |
2468 | goto cleanup; | |
2469 | c->attr.proc_pointer = 1; | |
2470 | c->attr.access = ACCESS_PRIVATE; | |
2471 | c->tb = XCNEW (gfc_typebound_proc); | |
2472 | c->tb->ppc = 1; | |
2473 | generate_finalization_wrapper (derived, ns, tname, c); | |
bda2b772 | 2474 | } |
8e54f139 | 2475 | |
50f30801 | 2476 | /* Add procedure pointers for type-bound procedures. */ |
8b704316 PT |
2477 | if (!derived->attr.unlimited_polymorphic) |
2478 | add_procs_to_declared_vtab (derived, vtype); | |
d6cd8711 | 2479 | } |
d15bac21 | 2480 | |
611c64f0 | 2481 | have_vtype: |
d15bac21 JW |
2482 | vtab->ts.u.derived = vtype; |
2483 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2484 | } | |
2485 | } | |
2486 | ||
81fb8a48 MM |
2487 | found_sym = vtab; |
2488 | ||
2489 | cleanup: | |
2490 | /* It is unexpected to have some symbols added at resolution or code | |
2491 | generation time. We commit the changes in order to keep a clean state. */ | |
2492 | if (found_sym) | |
e10f52d0 JW |
2493 | { |
2494 | gfc_commit_symbol (vtab); | |
2495 | if (vtype) | |
2496 | gfc_commit_symbol (vtype); | |
50f30801 JW |
2497 | if (def_init) |
2498 | gfc_commit_symbol (def_init); | |
611c64f0 JW |
2499 | if (copy) |
2500 | gfc_commit_symbol (copy); | |
2501 | if (src) | |
2502 | gfc_commit_symbol (src); | |
2503 | if (dst) | |
2504 | gfc_commit_symbol (dst); | |
e10f52d0 | 2505 | } |
81fb8a48 MM |
2506 | else |
2507 | gfc_undo_symbols (); | |
2508 | ||
2509 | return found_sym; | |
d15bac21 JW |
2510 | } |
2511 | ||
2512 | ||
86035eec TB |
2513 | /* Check if a derived type is finalizable. That is the case if it |
2514 | (1) has a FINAL subroutine or | |
2515 | (2) has a nonpointer nonallocatable component of finalizable type. | |
2516 | If it is finalizable, return an expression containing the | |
2517 | finalization wrapper. */ | |
2518 | ||
2519 | bool | |
2520 | gfc_is_finalizable (gfc_symbol *derived, gfc_expr **final_expr) | |
2521 | { | |
2522 | gfc_symbol *vtab; | |
2523 | gfc_component *c; | |
2524 | ||
2525 | /* (1) Check for FINAL subroutines. */ | |
2526 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2527 | goto yes; | |
2528 | ||
2529 | /* (2) Check for components of finalizable type. */ | |
2530 | for (c = derived->components; c; c = c->next) | |
2531 | if (c->ts.type == BT_DERIVED | |
2532 | && !c->attr.pointer && !c->attr.proc_pointer && !c->attr.allocatable | |
2533 | && gfc_is_finalizable (c->ts.u.derived, NULL)) | |
2534 | goto yes; | |
2535 | ||
2536 | return false; | |
2537 | ||
2538 | yes: | |
2539 | /* Make sure vtab is generated. */ | |
2540 | vtab = gfc_find_derived_vtab (derived); | |
2541 | if (final_expr) | |
2542 | { | |
2543 | /* Return finalizer expression. */ | |
2544 | gfc_component *final; | |
2545 | final = vtab->ts.u.derived->components->next->next->next->next->next; | |
2546 | gcc_assert (strcmp (final->name, "_final") == 0); | |
2547 | gcc_assert (final->initializer | |
2548 | && final->initializer->expr_type != EXPR_NULL); | |
2549 | *final_expr = final->initializer; | |
2550 | } | |
2551 | return true; | |
2552 | } | |
2553 | ||
2554 | ||
8b704316 PT |
2555 | /* Find (or generate) the symbol for an intrinsic type's vtab. This is |
2556 | need to support unlimited polymorphism. */ | |
2557 | ||
2558 | gfc_symbol * | |
2559 | gfc_find_intrinsic_vtab (gfc_typespec *ts) | |
2560 | { | |
2561 | gfc_namespace *ns; | |
2562 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL, *def_init = NULL; | |
2563 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; | |
2564 | int charlen = 0; | |
2565 | ||
2566 | if (ts->type == BT_CHARACTER && ts->deferred) | |
2567 | { | |
2568 | gfc_error ("TODO: Deferred character length variable at %C cannot " | |
2569 | "yet be associated with unlimited polymorphic entities"); | |
2570 | return NULL; | |
2571 | } | |
2572 | ||
2573 | if (ts->type == BT_UNKNOWN) | |
2574 | return NULL; | |
2575 | ||
2576 | /* Sometimes the typespec is passed from a single call. */ | |
2577 | if (ts->type == BT_DERIVED) | |
2578 | return gfc_find_derived_vtab (ts->u.derived); | |
2579 | ||
2580 | /* Find the top-level namespace. */ | |
2581 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
2582 | if (!ns->parent) | |
2583 | break; | |
2584 | ||
2585 | if (ts->type == BT_CHARACTER && ts->u.cl && ts->u.cl->length | |
2586 | && ts->u.cl->length->expr_type == EXPR_CONSTANT) | |
2587 | charlen = mpz_get_si (ts->u.cl->length->value.integer); | |
2588 | ||
2589 | if (ns) | |
2590 | { | |
2591 | char name[GFC_MAX_SYMBOL_LEN+1], tname[GFC_MAX_SYMBOL_LEN+1]; | |
2592 | ||
2593 | if (ts->type == BT_CHARACTER) | |
2594 | sprintf (tname, "%s_%d_%d", gfc_basic_typename (ts->type), | |
2595 | charlen, ts->kind); | |
2596 | else | |
2597 | sprintf (tname, "%s_%d_", gfc_basic_typename (ts->type), ts->kind); | |
2598 | ||
2599 | sprintf (name, "__vtab_%s", tname); | |
2600 | ||
2601 | /* Look for the vtab symbol in various namespaces. */ | |
2602 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
2603 | if (vtab == NULL) | |
2604 | gfc_find_symbol (name, ns, 0, &vtab); | |
2605 | ||
2606 | if (vtab == NULL) | |
2607 | { | |
2608 | gfc_get_symbol (name, ns, &vtab); | |
2609 | vtab->ts.type = BT_DERIVED; | |
2610 | if (gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, | |
2611 | &gfc_current_locus) == FAILURE) | |
2612 | goto cleanup; | |
2613 | vtab->attr.target = 1; | |
2614 | vtab->attr.save = SAVE_IMPLICIT; | |
2615 | vtab->attr.vtab = 1; | |
2616 | vtab->attr.access = ACCESS_PUBLIC; | |
2617 | gfc_set_sym_referenced (vtab); | |
2618 | sprintf (name, "__vtype_%s", tname); | |
2619 | ||
2620 | gfc_find_symbol (name, ns, 0, &vtype); | |
2621 | if (vtype == NULL) | |
2622 | { | |
2623 | gfc_component *c; | |
2624 | int hash; | |
2625 | gfc_namespace *sub_ns; | |
2626 | gfc_namespace *contained; | |
2627 | ||
2628 | gfc_get_symbol (name, ns, &vtype); | |
2629 | if (gfc_add_flavor (&vtype->attr, FL_DERIVED, | |
2630 | NULL, &gfc_current_locus) == FAILURE) | |
2631 | goto cleanup; | |
2632 | vtype->attr.access = ACCESS_PUBLIC; | |
2633 | vtype->attr.vtype = 1; | |
2634 | gfc_set_sym_referenced (vtype); | |
2635 | ||
2636 | /* Add component '_hash'. */ | |
2637 | if (gfc_add_component (vtype, "_hash", &c) == FAILURE) | |
2638 | goto cleanup; | |
2639 | c->ts.type = BT_INTEGER; | |
2640 | c->ts.kind = 4; | |
2641 | c->attr.access = ACCESS_PRIVATE; | |
2642 | hash = gfc_intrinsic_hash_value (ts); | |
2643 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2644 | NULL, hash); | |
2645 | ||
2646 | /* Add component '_size'. */ | |
2647 | if (gfc_add_component (vtype, "_size", &c) == FAILURE) | |
2648 | goto cleanup; | |
2649 | c->ts.type = BT_INTEGER; | |
2650 | c->ts.kind = 4; | |
2651 | c->attr.access = ACCESS_PRIVATE; | |
2652 | if (ts->type == BT_CHARACTER) | |
2653 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2654 | NULL, charlen*ts->kind); | |
2655 | else | |
2656 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2657 | NULL, ts->kind); | |
2658 | ||
2659 | /* Add component _extends. */ | |
2660 | if (gfc_add_component (vtype, "_extends", &c) == FAILURE) | |
2661 | goto cleanup; | |
2662 | c->attr.pointer = 1; | |
2663 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2664 | c->ts.type = BT_VOID; |
8b704316 PT |
2665 | c->initializer = gfc_get_null_expr (NULL); |
2666 | ||
2667 | /* Add component _def_init. */ | |
2668 | if (gfc_add_component (vtype, "_def_init", &c) == FAILURE) | |
2669 | goto cleanup; | |
2670 | c->attr.pointer = 1; | |
2671 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2672 | c->ts.type = BT_VOID; |
8b704316 PT |
2673 | c->initializer = gfc_get_null_expr (NULL); |
2674 | ||
2675 | /* Add component _copy. */ | |
2676 | if (gfc_add_component (vtype, "_copy", &c) == FAILURE) | |
2677 | goto cleanup; | |
2678 | c->attr.proc_pointer = 1; | |
2679 | c->attr.access = ACCESS_PRIVATE; | |
2680 | c->tb = XCNEW (gfc_typebound_proc); | |
2681 | c->tb->ppc = 1; | |
2682 | ||
2683 | /* Check to see if copy function already exists. Note | |
2684 | that this is only used for characters of different | |
2685 | lengths. */ | |
2686 | contained = ns->contained; | |
2687 | for (; contained; contained = contained->sibling) | |
2688 | if (contained->proc_name | |
2689 | && strcmp (name, contained->proc_name->name) == 0) | |
2690 | { | |
2691 | copy = contained->proc_name; | |
2692 | goto got_char_copy; | |
2693 | } | |
2694 | ||
2695 | /* Set up namespace. */ | |
2696 | sub_ns = gfc_get_namespace (ns, 0); | |
2697 | sub_ns->sibling = ns->contained; | |
2698 | ns->contained = sub_ns; | |
2699 | sub_ns->resolved = 1; | |
2700 | /* Set up procedure symbol. */ | |
2701 | if (ts->type != BT_CHARACTER) | |
2702 | sprintf (name, "__copy_%s", tname); | |
2703 | else | |
2704 | /* __copy is always the same for characters. */ | |
2705 | sprintf (name, "__copy_character_%d", ts->kind); | |
2706 | gfc_get_symbol (name, sub_ns, ©); | |
2707 | sub_ns->proc_name = copy; | |
2708 | copy->attr.flavor = FL_PROCEDURE; | |
2709 | copy->attr.subroutine = 1; | |
2710 | copy->attr.pure = 1; | |
2711 | copy->attr.if_source = IFSRC_DECL; | |
2712 | /* This is elemental so that arrays are automatically | |
2713 | treated correctly by the scalarizer. */ | |
2714 | copy->attr.elemental = 1; | |
2715 | if (ns->proc_name->attr.flavor == FL_MODULE) | |
2716 | copy->module = ns->proc_name->name; | |
2717 | gfc_set_sym_referenced (copy); | |
2718 | /* Set up formal arguments. */ | |
2719 | gfc_get_symbol ("src", sub_ns, &src); | |
2720 | src->ts.type = ts->type; | |
2721 | src->ts.kind = ts->kind; | |
2722 | src->attr.flavor = FL_VARIABLE; | |
2723 | src->attr.dummy = 1; | |
2724 | src->attr.intent = INTENT_IN; | |
2725 | gfc_set_sym_referenced (src); | |
2726 | copy->formal = gfc_get_formal_arglist (); | |
2727 | copy->formal->sym = src; | |
2728 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2729 | dst->ts.type = ts->type; | |
2730 | dst->ts.kind = ts->kind; | |
2731 | dst->attr.flavor = FL_VARIABLE; | |
2732 | dst->attr.dummy = 1; | |
2733 | dst->attr.intent = INTENT_OUT; | |
2734 | gfc_set_sym_referenced (dst); | |
2735 | copy->formal->next = gfc_get_formal_arglist (); | |
2736 | copy->formal->next->sym = dst; | |
2737 | /* Set up code. */ | |
2738 | sub_ns->code = gfc_get_code (); | |
2739 | sub_ns->code->op = EXEC_INIT_ASSIGN; | |
2740 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); | |
2741 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2742 | got_char_copy: | |
2743 | /* Set initializer. */ | |
2744 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2745 | c->ts.interface = copy; | |
94241120 TB |
2746 | |
2747 | /* Add component _final. */ | |
2748 | if (gfc_add_component (vtype, "_final", &c) == FAILURE) | |
2749 | goto cleanup; | |
2750 | c->attr.proc_pointer = 1; | |
2751 | c->attr.access = ACCESS_PRIVATE; | |
2752 | c->tb = XCNEW (gfc_typebound_proc); | |
2753 | c->tb->ppc = 1; | |
2754 | c->initializer = gfc_get_null_expr (NULL); | |
8b704316 PT |
2755 | } |
2756 | vtab->ts.u.derived = vtype; | |
2757 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2758 | } | |
2759 | } | |
2760 | ||
2761 | found_sym = vtab; | |
2762 | ||
2763 | cleanup: | |
2764 | /* It is unexpected to have some symbols added at resolution or code | |
2765 | generation time. We commit the changes in order to keep a clean state. */ | |
2766 | if (found_sym) | |
2767 | { | |
2768 | gfc_commit_symbol (vtab); | |
2769 | if (vtype) | |
2770 | gfc_commit_symbol (vtype); | |
2771 | if (def_init) | |
2772 | gfc_commit_symbol (def_init); | |
2773 | if (copy) | |
2774 | gfc_commit_symbol (copy); | |
2775 | if (src) | |
2776 | gfc_commit_symbol (src); | |
2777 | if (dst) | |
2778 | gfc_commit_symbol (dst); | |
2779 | } | |
2780 | else | |
2781 | gfc_undo_symbols (); | |
2782 | ||
2783 | return found_sym; | |
2784 | } | |
2785 | ||
2786 | ||
d15bac21 JW |
2787 | /* General worker function to find either a type-bound procedure or a |
2788 | type-bound user operator. */ | |
2789 | ||
2790 | static gfc_symtree* | |
2791 | find_typebound_proc_uop (gfc_symbol* derived, gfc_try* t, | |
2792 | const char* name, bool noaccess, bool uop, | |
2793 | locus* where) | |
2794 | { | |
2795 | gfc_symtree* res; | |
2796 | gfc_symtree* root; | |
2797 | ||
2798 | /* Set correct symbol-root. */ | |
2799 | gcc_assert (derived->f2k_derived); | |
2800 | root = (uop ? derived->f2k_derived->tb_uop_root | |
2801 | : derived->f2k_derived->tb_sym_root); | |
2802 | ||
2803 | /* Set default to failure. */ | |
2804 | if (t) | |
2805 | *t = FAILURE; | |
2806 | ||
2807 | /* Try to find it in the current type's namespace. */ | |
2808 | res = gfc_find_symtree (root, name); | |
2809 | if (res && res->n.tb && !res->n.tb->error) | |
2810 | { | |
2811 | /* We found one. */ | |
2812 | if (t) | |
2813 | *t = SUCCESS; | |
2814 | ||
2815 | if (!noaccess && derived->attr.use_assoc | |
2816 | && res->n.tb->access == ACCESS_PRIVATE) | |
2817 | { | |
2818 | if (where) | |
2819 | gfc_error ("'%s' of '%s' is PRIVATE at %L", | |
2820 | name, derived->name, where); | |
2821 | if (t) | |
2822 | *t = FAILURE; | |
2823 | } | |
2824 | ||
2825 | return res; | |
2826 | } | |
2827 | ||
2828 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2829 | if (derived->attr.extension) | |
2830 | { | |
2831 | gfc_symbol* super_type; | |
2832 | super_type = gfc_get_derived_super_type (derived); | |
2833 | gcc_assert (super_type); | |
2834 | ||
2835 | return find_typebound_proc_uop (super_type, t, name, | |
2836 | noaccess, uop, where); | |
2837 | } | |
2838 | ||
2839 | /* Nothing found. */ | |
2840 | return NULL; | |
2841 | } | |
2842 | ||
2843 | ||
2844 | /* Find a type-bound procedure or user operator by name for a derived-type | |
2845 | (looking recursively through the super-types). */ | |
2846 | ||
2847 | gfc_symtree* | |
2848 | gfc_find_typebound_proc (gfc_symbol* derived, gfc_try* t, | |
2849 | const char* name, bool noaccess, locus* where) | |
2850 | { | |
2851 | return find_typebound_proc_uop (derived, t, name, noaccess, false, where); | |
2852 | } | |
2853 | ||
2854 | gfc_symtree* | |
2855 | gfc_find_typebound_user_op (gfc_symbol* derived, gfc_try* t, | |
2856 | const char* name, bool noaccess, locus* where) | |
2857 | { | |
2858 | return find_typebound_proc_uop (derived, t, name, noaccess, true, where); | |
2859 | } | |
2860 | ||
2861 | ||
2862 | /* Find a type-bound intrinsic operator looking recursively through the | |
2863 | super-type hierarchy. */ | |
2864 | ||
2865 | gfc_typebound_proc* | |
2866 | gfc_find_typebound_intrinsic_op (gfc_symbol* derived, gfc_try* t, | |
2867 | gfc_intrinsic_op op, bool noaccess, | |
2868 | locus* where) | |
2869 | { | |
2870 | gfc_typebound_proc* res; | |
2871 | ||
2872 | /* Set default to failure. */ | |
2873 | if (t) | |
2874 | *t = FAILURE; | |
2875 | ||
2876 | /* Try to find it in the current type's namespace. */ | |
2877 | if (derived->f2k_derived) | |
2878 | res = derived->f2k_derived->tb_op[op]; | |
8b704316 | 2879 | else |
d15bac21 JW |
2880 | res = NULL; |
2881 | ||
2882 | /* Check access. */ | |
2883 | if (res && !res->error) | |
2884 | { | |
2885 | /* We found one. */ | |
2886 | if (t) | |
2887 | *t = SUCCESS; | |
2888 | ||
2889 | if (!noaccess && derived->attr.use_assoc | |
2890 | && res->access == ACCESS_PRIVATE) | |
2891 | { | |
2892 | if (where) | |
2893 | gfc_error ("'%s' of '%s' is PRIVATE at %L", | |
2894 | gfc_op2string (op), derived->name, where); | |
2895 | if (t) | |
2896 | *t = FAILURE; | |
2897 | } | |
2898 | ||
2899 | return res; | |
2900 | } | |
2901 | ||
2902 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2903 | if (derived->attr.extension) | |
2904 | { | |
2905 | gfc_symbol* super_type; | |
2906 | super_type = gfc_get_derived_super_type (derived); | |
2907 | gcc_assert (super_type); | |
2908 | ||
2909 | return gfc_find_typebound_intrinsic_op (super_type, t, op, | |
2910 | noaccess, where); | |
2911 | } | |
2912 | ||
2913 | /* Nothing found. */ | |
2914 | return NULL; | |
2915 | } | |
2916 | ||
2917 | ||
2918 | /* Get a typebound-procedure symtree or create and insert it if not yet | |
2919 | present. This is like a very simplified version of gfc_get_sym_tree for | |
2920 | tbp-symtrees rather than regular ones. */ | |
2921 | ||
2922 | gfc_symtree* | |
2923 | gfc_get_tbp_symtree (gfc_symtree **root, const char *name) | |
2924 | { | |
2925 | gfc_symtree *result; | |
2926 | ||
2927 | result = gfc_find_symtree (*root, name); | |
2928 | if (!result) | |
2929 | { | |
2930 | result = gfc_new_symtree (root, name); | |
2931 | gcc_assert (result); | |
2932 | result->n.tb = NULL; | |
2933 | } | |
2934 | ||
2935 | return result; | |
2936 | } |