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d15bac21 | 1 | /* Implementation of Fortran 2003 Polymorphism. |
8d9254fc | 2 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
4fa02692 JW |
3 | Contributed by Paul Richard Thomas <pault@gcc.gnu.org> |
4 | and Janus Weil <janus@gcc.gnu.org> | |
d15bac21 JW |
5 | |
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | ||
23 | /* class.c -- This file contains the front end functions needed to service | |
24 | the implementation of Fortran 2003 polymorphism and other | |
25 | object-oriented features. */ | |
26 | ||
27 | ||
28 | /* Outline of the internal representation: | |
29 | ||
30 | Each CLASS variable is encapsulated by a class container, which is a | |
31 | structure with two fields: | |
b04533af | 32 | * _data: A pointer to the actual data of the variable. This field has the |
d15bac21 JW |
33 | declared type of the class variable and its attributes |
34 | (pointer/allocatable/dimension/...). | |
b04533af | 35 | * _vptr: A pointer to the vtable entry (see below) of the dynamic type. |
8e54f139 | 36 | |
5b384b3d | 37 | Only for unlimited polymorphic classes: |
f622221a | 38 | * _len: An integer(C_SIZE_T) to store the string length when the unlimited |
5b384b3d PT |
39 | polymorphic pointer is used to point to a char array. The '_len' |
40 | component will be zero when no character array is stored in | |
41 | '_data'. | |
42 | ||
d15bac21 JW |
43 | For each derived type we set up a "vtable" entry, i.e. a structure with the |
44 | following fields: | |
b04533af JW |
45 | * _hash: A hash value serving as a unique identifier for this type. |
46 | * _size: The size in bytes of the derived type. | |
47 | * _extends: A pointer to the vtable entry of the parent derived type. | |
48 | * _def_init: A pointer to a default initialized variable of this type. | |
49 | * _copy: A procedure pointer to a copying procedure. | |
8e54f139 TB |
50 | * _final: A procedure pointer to a wrapper function, which frees |
51 | allocatable components and calls FINAL subroutines. | |
52 | ||
611c64f0 JW |
53 | After these follow procedure pointer components for the specific |
54 | type-bound procedures. */ | |
d15bac21 JW |
55 | |
56 | ||
57 | #include "config.h" | |
58 | #include "system.h" | |
953bee7c | 59 | #include "coretypes.h" |
d15bac21 JW |
60 | #include "gfortran.h" |
61 | #include "constructor.h" | |
cddf0123 | 62 | #include "target-memory.h" |
d15bac21 | 63 | |
37da591f MM |
64 | /* Inserts a derived type component reference in a data reference chain. |
65 | TS: base type of the ref chain so far, in which we will pick the component | |
66 | REF: the address of the GFC_REF pointer to update | |
67 | NAME: name of the component to insert | |
68 | Note that component insertion makes sense only if we are at the end of | |
69 | the chain (*REF == NULL) or if we are adding a missing "_data" component | |
70 | to access the actual contents of a class object. */ | |
71 | ||
72 | static void | |
73 | insert_component_ref (gfc_typespec *ts, gfc_ref **ref, const char * const name) | |
74 | { | |
37da591f | 75 | gfc_ref *new_ref; |
4874b4d2 | 76 | int wcnt, ecnt; |
37da591f MM |
77 | |
78 | gcc_assert (ts->type == BT_DERIVED || ts->type == BT_CLASS); | |
37da591f | 79 | |
4874b4d2 SK |
80 | gfc_find_component (ts->u.derived, name, true, true, &new_ref); |
81 | ||
82 | gfc_get_errors (&wcnt, &ecnt); | |
83 | if (ecnt > 0 && !new_ref) | |
84 | return; | |
37da591f | 85 | gcc_assert (new_ref->u.c.component); |
4874b4d2 | 86 | |
f6288c24 FR |
87 | while (new_ref->next) |
88 | new_ref = new_ref->next; | |
89 | new_ref->next = *ref; | |
37da591f MM |
90 | |
91 | if (new_ref->next) | |
92 | { | |
93 | gfc_ref *next = NULL; | |
94 | ||
95 | /* We need to update the base type in the trailing reference chain to | |
96 | that of the new component. */ | |
97 | ||
98 | gcc_assert (strcmp (name, "_data") == 0); | |
99 | ||
100 | if (new_ref->next->type == REF_COMPONENT) | |
101 | next = new_ref->next; | |
102 | else if (new_ref->next->type == REF_ARRAY | |
103 | && new_ref->next->next | |
104 | && new_ref->next->next->type == REF_COMPONENT) | |
105 | next = new_ref->next->next; | |
106 | ||
107 | if (next != NULL) | |
108 | { | |
109 | gcc_assert (new_ref->u.c.component->ts.type == BT_CLASS | |
110 | || new_ref->u.c.component->ts.type == BT_DERIVED); | |
111 | next->u.c.sym = new_ref->u.c.component->ts.u.derived; | |
112 | } | |
113 | } | |
114 | ||
115 | *ref = new_ref; | |
116 | } | |
117 | ||
118 | ||
119 | /* Tells whether we need to add a "_data" reference to access REF subobject | |
120 | from an object of type TS. If FIRST_REF_IN_CHAIN is set, then the base | |
121 | object accessed by REF is a variable; in other words it is a full object, | |
122 | not a subobject. */ | |
123 | ||
124 | static bool | |
125 | class_data_ref_missing (gfc_typespec *ts, gfc_ref *ref, bool first_ref_in_chain) | |
126 | { | |
127 | /* Only class containers may need the "_data" reference. */ | |
128 | if (ts->type != BT_CLASS) | |
129 | return false; | |
130 | ||
131 | /* Accessing a class container with an array reference is certainly wrong. */ | |
132 | if (ref->type != REF_COMPONENT) | |
133 | return true; | |
134 | ||
135 | /* Accessing the class container's fields is fine. */ | |
136 | if (ref->u.c.component->name[0] == '_') | |
137 | return false; | |
138 | ||
139 | /* At this point we have a class container with a non class container's field | |
140 | component reference. We don't want to add the "_data" component if we are | |
141 | at the first reference and the symbol's type is an extended derived type. | |
142 | In that case, conv_parent_component_references will do the right thing so | |
143 | it is not absolutely necessary. Omitting it prevents a regression (see | |
144 | class_41.f03) in the interface mapping mechanism. When evaluating string | |
145 | lengths depending on dummy arguments, we create a fake symbol with a type | |
146 | equal to that of the dummy type. However, because of type extension, | |
147 | the backend type (corresponding to the actual argument) can have a | |
148 | different (extended) type. Adding the "_data" component explicitly, using | |
149 | the base type, confuses the gfc_conv_component_ref code which deals with | |
150 | the extended type. */ | |
151 | if (first_ref_in_chain && ts->u.derived->attr.extension) | |
152 | return false; | |
153 | ||
154 | /* We have a class container with a non class container's field component | |
155 | reference that doesn't fall into the above. */ | |
156 | return true; | |
157 | } | |
158 | ||
159 | ||
160 | /* Browse through a data reference chain and add the missing "_data" references | |
161 | when a subobject of a class object is accessed without it. | |
162 | Note that it doesn't add the "_data" reference when the class container | |
163 | is the last element in the reference chain. */ | |
164 | ||
165 | void | |
166 | gfc_fix_class_refs (gfc_expr *e) | |
167 | { | |
168 | gfc_typespec *ts; | |
169 | gfc_ref **ref; | |
170 | ||
171 | if ((e->expr_type != EXPR_VARIABLE | |
172 | && e->expr_type != EXPR_FUNCTION) | |
173 | || (e->expr_type == EXPR_FUNCTION | |
174 | && e->value.function.isym != NULL)) | |
175 | return; | |
176 | ||
d00be3a3 SK |
177 | if (e->expr_type == EXPR_VARIABLE) |
178 | ts = &e->symtree->n.sym->ts; | |
179 | else | |
180 | { | |
181 | gfc_symbol *func; | |
182 | ||
183 | gcc_assert (e->expr_type == EXPR_FUNCTION); | |
184 | if (e->value.function.esym != NULL) | |
185 | func = e->value.function.esym; | |
186 | else | |
187 | func = e->symtree->n.sym; | |
188 | ||
189 | if (func->result != NULL) | |
190 | ts = &func->result->ts; | |
191 | else | |
192 | ts = &func->ts; | |
193 | } | |
37da591f MM |
194 | |
195 | for (ref = &e->ref; *ref != NULL; ref = &(*ref)->next) | |
196 | { | |
197 | if (class_data_ref_missing (ts, *ref, ref == &e->ref)) | |
198 | insert_component_ref (ts, ref, "_data"); | |
199 | ||
200 | if ((*ref)->type == REF_COMPONENT) | |
201 | ts = &(*ref)->u.c.component->ts; | |
202 | } | |
203 | } | |
204 | ||
205 | ||
d15bac21 | 206 | /* Insert a reference to the component of the given name. |
b04533af | 207 | Only to be used with CLASS containers and vtables. */ |
d15bac21 JW |
208 | |
209 | void | |
210 | gfc_add_component_ref (gfc_expr *e, const char *name) | |
211 | { | |
f6288c24 | 212 | gfc_component *c; |
d15bac21 | 213 | gfc_ref **tail = &(e->ref); |
f6288c24 | 214 | gfc_ref *ref, *next = NULL; |
d15bac21 JW |
215 | gfc_symbol *derived = e->symtree->n.sym->ts.u.derived; |
216 | while (*tail != NULL) | |
217 | { | |
218 | if ((*tail)->type == REF_COMPONENT) | |
c49ea23d PT |
219 | { |
220 | if (strcmp ((*tail)->u.c.component->name, "_data") == 0 | |
221 | && (*tail)->next | |
222 | && (*tail)->next->type == REF_ARRAY | |
223 | && (*tail)->next->next == NULL) | |
224 | return; | |
225 | derived = (*tail)->u.c.component->ts.u.derived; | |
226 | } | |
d15bac21 JW |
227 | if ((*tail)->type == REF_ARRAY && (*tail)->next == NULL) |
228 | break; | |
229 | tail = &((*tail)->next); | |
230 | } | |
5f395580 JW |
231 | if (derived->components && derived->components->next && |
232 | derived->components->next->ts.type == BT_DERIVED && | |
9b6da3c7 JW |
233 | derived->components->next->ts.u.derived == NULL) |
234 | { | |
235 | /* Fix up missing vtype. */ | |
236 | gfc_symbol *vtab = gfc_find_derived_vtab (derived->components->ts.u.derived); | |
237 | gcc_assert (vtab); | |
238 | derived->components->next->ts.u.derived = vtab->ts.u.derived; | |
239 | } | |
b04533af | 240 | if (*tail != NULL && strcmp (name, "_data") == 0) |
d15bac21 | 241 | next = *tail; |
34d9d749 AV |
242 | else |
243 | /* Avoid losing memory. */ | |
244 | gfc_free_ref_list (*tail); | |
f6288c24 | 245 | c = gfc_find_component (derived, name, true, true, tail); |
9cd74e8f SK |
246 | |
247 | if (c) { | |
248 | for (ref = *tail; ref->next; ref = ref->next) | |
249 | ; | |
250 | ref->next = next; | |
251 | if (!next) | |
252 | e->ts = c->ts; | |
253 | } | |
d15bac21 JW |
254 | } |
255 | ||
256 | ||
c49ea23d PT |
257 | /* This is used to add both the _data component reference and an array |
258 | reference to class expressions. Used in translation of intrinsic | |
259 | array inquiry functions. */ | |
260 | ||
261 | void | |
262 | gfc_add_class_array_ref (gfc_expr *e) | |
263 | { | |
c62c6622 | 264 | int rank = CLASS_DATA (e)->as->rank; |
c49ea23d PT |
265 | gfc_array_spec *as = CLASS_DATA (e)->as; |
266 | gfc_ref *ref = NULL; | |
d42844f1 | 267 | gfc_add_data_component (e); |
c49ea23d PT |
268 | e->rank = rank; |
269 | for (ref = e->ref; ref; ref = ref->next) | |
270 | if (!ref->next) | |
271 | break; | |
272 | if (ref->type != REF_ARRAY) | |
273 | { | |
274 | ref->next = gfc_get_ref (); | |
275 | ref = ref->next; | |
276 | ref->type = REF_ARRAY; | |
277 | ref->u.ar.type = AR_FULL; | |
8b704316 | 278 | ref->u.ar.as = as; |
c49ea23d PT |
279 | } |
280 | } | |
281 | ||
282 | ||
283 | /* Unfortunately, class array expressions can appear in various conditions; | |
284 | with and without both _data component and an arrayspec. This function | |
285 | deals with that variability. The previous reference to 'ref' is to a | |
286 | class array. */ | |
287 | ||
288 | static bool | |
289 | class_array_ref_detected (gfc_ref *ref, bool *full_array) | |
290 | { | |
291 | bool no_data = false; | |
292 | bool with_data = false; | |
293 | ||
294 | /* An array reference with no _data component. */ | |
295 | if (ref && ref->type == REF_ARRAY | |
296 | && !ref->next | |
297 | && ref->u.ar.type != AR_ELEMENT) | |
298 | { | |
299 | if (full_array) | |
300 | *full_array = ref->u.ar.type == AR_FULL; | |
301 | no_data = true; | |
302 | } | |
303 | ||
304 | /* Cover cases where _data appears, with or without an array ref. */ | |
305 | if (ref && ref->type == REF_COMPONENT | |
306 | && strcmp (ref->u.c.component->name, "_data") == 0) | |
307 | { | |
308 | if (!ref->next) | |
309 | { | |
310 | with_data = true; | |
311 | if (full_array) | |
312 | *full_array = true; | |
313 | } | |
314 | else if (ref->next && ref->next->type == REF_ARRAY | |
c49ea23d | 315 | && ref->type == REF_COMPONENT |
c49ea23d PT |
316 | && ref->next->u.ar.type != AR_ELEMENT) |
317 | { | |
318 | with_data = true; | |
319 | if (full_array) | |
320 | *full_array = ref->next->u.ar.type == AR_FULL; | |
321 | } | |
322 | } | |
323 | ||
324 | return no_data || with_data; | |
325 | } | |
326 | ||
327 | ||
328 | /* Returns true if the expression contains a reference to a class | |
329 | array. Notice that class array elements return false. */ | |
330 | ||
331 | bool | |
332 | gfc_is_class_array_ref (gfc_expr *e, bool *full_array) | |
333 | { | |
334 | gfc_ref *ref; | |
335 | ||
336 | if (!e->rank) | |
337 | return false; | |
338 | ||
339 | if (full_array) | |
340 | *full_array= false; | |
341 | ||
342 | /* Is this a class array object? ie. Is the symbol of type class? */ | |
343 | if (e->symtree | |
344 | && e->symtree->n.sym->ts.type == BT_CLASS | |
345 | && CLASS_DATA (e->symtree->n.sym) | |
346 | && CLASS_DATA (e->symtree->n.sym)->attr.dimension | |
347 | && class_array_ref_detected (e->ref, full_array)) | |
348 | return true; | |
349 | ||
350 | /* Or is this a class array component reference? */ | |
351 | for (ref = e->ref; ref; ref = ref->next) | |
352 | { | |
353 | if (ref->type == REF_COMPONENT | |
354 | && ref->u.c.component->ts.type == BT_CLASS | |
355 | && CLASS_DATA (ref->u.c.component)->attr.dimension | |
356 | && class_array_ref_detected (ref->next, full_array)) | |
357 | return true; | |
358 | } | |
359 | ||
360 | return false; | |
361 | } | |
362 | ||
363 | ||
364 | /* Returns true if the expression is a reference to a class | |
365 | scalar. This function is necessary because such expressions | |
366 | can be dressed with a reference to the _data component and so | |
367 | have a type other than BT_CLASS. */ | |
368 | ||
369 | bool | |
370 | gfc_is_class_scalar_expr (gfc_expr *e) | |
371 | { | |
372 | gfc_ref *ref; | |
373 | ||
374 | if (e->rank) | |
375 | return false; | |
376 | ||
377 | /* Is this a class object? */ | |
378 | if (e->symtree | |
379 | && e->symtree->n.sym->ts.type == BT_CLASS | |
380 | && CLASS_DATA (e->symtree->n.sym) | |
381 | && !CLASS_DATA (e->symtree->n.sym)->attr.dimension | |
382 | && (e->ref == NULL | |
dc9e0b66 AV |
383 | || (e->ref->type == REF_COMPONENT |
384 | && strcmp (e->ref->u.c.component->name, "_data") == 0 | |
c49ea23d PT |
385 | && e->ref->next == NULL))) |
386 | return true; | |
387 | ||
388 | /* Or is the final reference BT_CLASS or _data? */ | |
389 | for (ref = e->ref; ref; ref = ref->next) | |
390 | { | |
391 | if (ref->type == REF_COMPONENT | |
392 | && ref->u.c.component->ts.type == BT_CLASS | |
393 | && CLASS_DATA (ref->u.c.component) | |
394 | && !CLASS_DATA (ref->u.c.component)->attr.dimension | |
395 | && (ref->next == NULL | |
dc9e0b66 AV |
396 | || (ref->next->type == REF_COMPONENT |
397 | && strcmp (ref->next->u.c.component->name, "_data") == 0 | |
c49ea23d PT |
398 | && ref->next->next == NULL))) |
399 | return true; | |
400 | } | |
401 | ||
402 | return false; | |
403 | } | |
404 | ||
405 | ||
5bf5fa56 MM |
406 | /* Tells whether the expression E is a reference to a (scalar) class container. |
407 | Scalar because array class containers usually have an array reference after | |
408 | them, and gfc_fix_class_refs will add the missing "_data" component reference | |
409 | in that case. */ | |
410 | ||
411 | bool | |
412 | gfc_is_class_container_ref (gfc_expr *e) | |
413 | { | |
414 | gfc_ref *ref; | |
415 | bool result; | |
416 | ||
417 | if (e->expr_type != EXPR_VARIABLE) | |
418 | return e->ts.type == BT_CLASS; | |
419 | ||
420 | if (e->symtree->n.sym->ts.type == BT_CLASS) | |
421 | result = true; | |
422 | else | |
423 | result = false; | |
424 | ||
425 | for (ref = e->ref; ref; ref = ref->next) | |
426 | { | |
427 | if (ref->type != REF_COMPONENT) | |
428 | result = false; | |
429 | else if (ref->u.c.component->ts.type == BT_CLASS) | |
8b704316 | 430 | result = true; |
5bf5fa56 MM |
431 | else |
432 | result = false; | |
433 | } | |
434 | ||
435 | return result; | |
436 | } | |
437 | ||
438 | ||
2cc6320d JW |
439 | /* Build an initializer for CLASS pointers, |
440 | initializing the _data component to the init_expr (or NULL) and the _vptr | |
441 | component to the corresponding type (or the declared type, given by ts). */ | |
d15bac21 JW |
442 | |
443 | gfc_expr * | |
2cc6320d | 444 | gfc_class_initializer (gfc_typespec *ts, gfc_expr *init_expr) |
d15bac21 JW |
445 | { |
446 | gfc_expr *init; | |
447 | gfc_component *comp; | |
8b704316 | 448 | gfc_symbol *vtab = NULL; |
8b704316 | 449 | |
7289d1c9 JW |
450 | if (init_expr && init_expr->expr_type != EXPR_NULL) |
451 | vtab = gfc_find_vtab (&init_expr->ts); | |
8b704316 | 452 | else |
7289d1c9 | 453 | vtab = gfc_find_vtab (ts); |
8b704316 | 454 | |
d15bac21 JW |
455 | init = gfc_get_structure_constructor_expr (ts->type, ts->kind, |
456 | &ts->u.derived->declared_at); | |
457 | init->ts = *ts; | |
8b704316 | 458 | |
d15bac21 JW |
459 | for (comp = ts->u.derived->components; comp; comp = comp->next) |
460 | { | |
461 | gfc_constructor *ctor = gfc_constructor_get(); | |
8b704316 PT |
462 | if (strcmp (comp->name, "_vptr") == 0 && vtab) |
463 | ctor->expr = gfc_lval_expr_from_sym (vtab); | |
2cc6320d JW |
464 | else if (init_expr && init_expr->expr_type != EXPR_NULL) |
465 | ctor->expr = gfc_copy_expr (init_expr); | |
0d87fa8c JW |
466 | else |
467 | ctor->expr = gfc_get_null_expr (NULL); | |
d15bac21 JW |
468 | gfc_constructor_append (&init->value.constructor, ctor); |
469 | } | |
470 | ||
471 | return init; | |
472 | } | |
473 | ||
474 | ||
b04533af JW |
475 | /* Create a unique string identifier for a derived type, composed of its name |
476 | and module name. This is used to construct unique names for the class | |
477 | containers and vtab symbols. */ | |
478 | ||
ac932bfc HA |
479 | static char * |
480 | get_unique_type_string (gfc_symbol *derived) | |
b52956be | 481 | { |
3ee9d824 | 482 | const char *dt_name; |
ac932bfc HA |
483 | char *string; |
484 | size_t len; | |
8b704316 | 485 | if (derived->attr.unlimited_polymorphic) |
3ee9d824 | 486 | dt_name = "STAR"; |
8b704316 | 487 | else |
3ee9d824 | 488 | dt_name = gfc_dt_upper_string (derived->name); |
ac932bfc | 489 | len = strlen (dt_name) + 2; |
8b704316 | 490 | if (derived->attr.unlimited_polymorphic) |
ac932bfc HA |
491 | { |
492 | string = XNEWVEC (char, len); | |
493 | sprintf (string, "_%s", dt_name); | |
494 | } | |
8b704316 | 495 | else if (derived->module) |
ac932bfc HA |
496 | { |
497 | string = XNEWVEC (char, strlen (derived->module) + len); | |
498 | sprintf (string, "%s_%s", derived->module, dt_name); | |
499 | } | |
4fa02692 | 500 | else if (derived->ns->proc_name) |
ac932bfc HA |
501 | { |
502 | string = XNEWVEC (char, strlen (derived->ns->proc_name->name) + len); | |
503 | sprintf (string, "%s_%s", derived->ns->proc_name->name, dt_name); | |
504 | } | |
4fa02692 | 505 | else |
ac932bfc HA |
506 | { |
507 | string = XNEWVEC (char, len); | |
508 | sprintf (string, "_%s", dt_name); | |
509 | } | |
510 | return string; | |
4fa02692 JW |
511 | } |
512 | ||
513 | ||
514 | /* A relative of 'get_unique_type_string' which makes sure the generated | |
515 | string will not be too long (replacing it by a hash string if needed). */ | |
516 | ||
517 | static void | |
518 | get_unique_hashed_string (char *string, gfc_symbol *derived) | |
519 | { | |
b342cfd6 | 520 | /* Provide sufficient space to hold "symbol.symbol_symbol". */ |
ac932bfc HA |
521 | char *tmp; |
522 | tmp = get_unique_type_string (derived); | |
cb83a137 | 523 | /* If string is too long, use hash value in hex representation (allow for |
2419ff64 TB |
524 | extra decoration, cf. gfc_build_class_symbol & gfc_find_derived_vtab). |
525 | We need space to for 15 characters "__class_" + symbol name + "_%d_%da", | |
526 | where %d is the (co)rank which can be up to n = 15. */ | |
527 | if (strlen (tmp) > GFC_MAX_SYMBOL_LEN - 15) | |
4fa02692 JW |
528 | { |
529 | int h = gfc_hash_value (derived); | |
530 | sprintf (string, "%X", h); | |
531 | } | |
532 | else | |
533 | strcpy (string, tmp); | |
ac932bfc | 534 | free (tmp); |
4fa02692 JW |
535 | } |
536 | ||
537 | ||
538 | /* Assign a hash value for a derived type. The algorithm is that of SDBM. */ | |
539 | ||
540 | unsigned int | |
541 | gfc_hash_value (gfc_symbol *sym) | |
542 | { | |
543 | unsigned int hash = 0; | |
b342cfd6 | 544 | /* Provide sufficient space to hold "symbol.symbol_symbol". */ |
ac932bfc | 545 | char *c; |
4fa02692 | 546 | int i, len; |
8b704316 | 547 | |
ac932bfc HA |
548 | c = get_unique_type_string (sym); |
549 | len = strlen (c); | |
8b704316 PT |
550 | |
551 | for (i = 0; i < len; i++) | |
552 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
553 | ||
ac932bfc | 554 | free (c); |
8b704316 PT |
555 | /* Return the hash but take the modulus for the sake of module read, |
556 | even though this slightly increases the chance of collision. */ | |
557 | return (hash % 100000000); | |
558 | } | |
559 | ||
560 | ||
561 | /* Assign a hash value for an intrinsic type. The algorithm is that of SDBM. */ | |
562 | ||
563 | unsigned int | |
564 | gfc_intrinsic_hash_value (gfc_typespec *ts) | |
565 | { | |
566 | unsigned int hash = 0; | |
5958b926 | 567 | const char *c = gfc_typename (ts, true); |
8b704316 PT |
568 | int i, len; |
569 | ||
570 | len = strlen (c); | |
571 | ||
4fa02692 JW |
572 | for (i = 0; i < len; i++) |
573 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
574 | ||
575 | /* Return the hash but take the modulus for the sake of module read, | |
576 | even though this slightly increases the chance of collision. */ | |
577 | return (hash % 100000000); | |
b04533af JW |
578 | } |
579 | ||
580 | ||
5b384b3d PT |
581 | /* Get the _len component from a class/derived object storing a string. |
582 | For unlimited polymorphic entities a ref to the _data component is available | |
583 | while a ref to the _len component is needed. This routine traverese the | |
584 | ref-chain and strips the last ref to a _data from it replacing it with a | |
585 | ref to the _len component. */ | |
586 | ||
587 | gfc_expr * | |
9e6644c6 | 588 | gfc_get_len_component (gfc_expr *e, int k) |
5b384b3d PT |
589 | { |
590 | gfc_expr *ptr; | |
591 | gfc_ref *ref, **last; | |
592 | ||
593 | ptr = gfc_copy_expr (e); | |
594 | ||
595 | /* We need to remove the last _data component ref from ptr. */ | |
596 | last = &(ptr->ref); | |
597 | ref = ptr->ref; | |
598 | while (ref) | |
599 | { | |
600 | if (!ref->next | |
601 | && ref->type == REF_COMPONENT | |
602 | && strcmp ("_data", ref->u.c.component->name)== 0) | |
603 | { | |
604 | gfc_free_ref_list (ref); | |
605 | *last = NULL; | |
606 | break; | |
607 | } | |
608 | last = &(ref->next); | |
609 | ref = ref->next; | |
610 | } | |
611 | /* And replace if with a ref to the _len component. */ | |
d42844f1 | 612 | gfc_add_len_component (ptr); |
9e6644c6 TK |
613 | if (k != ptr->ts.kind) |
614 | { | |
615 | gfc_typespec ts; | |
616 | gfc_clear_ts (&ts); | |
617 | ts.type = BT_INTEGER; | |
618 | ts.kind = k; | |
619 | gfc_convert_type_warn (ptr, &ts, 2, 0); | |
620 | } | |
5b384b3d PT |
621 | return ptr; |
622 | } | |
623 | ||
624 | ||
d15bac21 JW |
625 | /* Build a polymorphic CLASS entity, using the symbol that comes from |
626 | build_sym. A CLASS entity is represented by an encapsulating type, | |
b04533af | 627 | which contains the declared type as '_data' component, plus a pointer |
5b384b3d PT |
628 | component '_vptr' which determines the dynamic type. When this CLASS |
629 | entity is unlimited polymorphic, then also add a component '_len' to | |
630 | store the length of string when that is stored in it. */ | |
d15bac21 | 631 | |
524af0d6 | 632 | bool |
d15bac21 | 633 | gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr, |
9b6da3c7 | 634 | gfc_array_spec **as) |
d15bac21 | 635 | { |
2004617a QZ |
636 | char tname[GFC_MAX_SYMBOL_LEN+1]; |
637 | char *name; | |
d15bac21 JW |
638 | gfc_symbol *fclass; |
639 | gfc_symbol *vtab; | |
640 | gfc_component *c; | |
8b704316 | 641 | gfc_namespace *ns; |
c62c6622 | 642 | int rank; |
c49ea23d | 643 | |
fc2655fb TB |
644 | gcc_assert (as); |
645 | ||
646 | if (*as && (*as)->type == AS_ASSUMED_SIZE) | |
c49ea23d PT |
647 | { |
648 | gfc_error ("Assumed size polymorphic objects or components, such " | |
649 | "as that at %C, have not yet been implemented"); | |
524af0d6 | 650 | return false; |
c49ea23d PT |
651 | } |
652 | ||
528622fd JW |
653 | if (attr->class_ok) |
654 | /* Class container has already been built. */ | |
524af0d6 | 655 | return true; |
528622fd | 656 | |
7d40e49f | 657 | attr->class_ok = attr->dummy || attr->pointer || attr->allocatable |
aa271860 | 658 | || attr->select_type_temporary || attr->associate_var; |
8b704316 | 659 | |
528622fd | 660 | if (!attr->class_ok) |
67914693 | 661 | /* We cannot build the class container yet. */ |
524af0d6 | 662 | return true; |
d15bac21 JW |
663 | |
664 | /* Determine the name of the encapsulating type. */ | |
c62c6622 | 665 | rank = !(*as) || (*as)->rank == -1 ? GFC_MAX_DIMENSIONS : (*as)->rank; |
4fa02692 | 666 | get_unique_hashed_string (tname, ts->u.derived); |
2419ff64 | 667 | if ((*as) && attr->allocatable) |
2004617a | 668 | name = xasprintf ("__class_%s_%d_%da", tname, rank, (*as)->corank); |
c62c6622 | 669 | else if ((*as) && attr->pointer) |
2004617a | 670 | name = xasprintf ("__class_%s_%d_%dp", tname, rank, (*as)->corank); |
2419ff64 | 671 | else if ((*as)) |
2004617a | 672 | name = xasprintf ("__class_%s_%d_%dt", tname, rank, (*as)->corank); |
d15bac21 | 673 | else if (attr->pointer) |
2004617a | 674 | name = xasprintf ("__class_%s_p", tname); |
d15bac21 | 675 | else if (attr->allocatable) |
2004617a | 676 | name = xasprintf ("__class_%s_a", tname); |
d15bac21 | 677 | else |
2004617a | 678 | name = xasprintf ("__class_%s_t", tname); |
d15bac21 | 679 | |
8b704316 PT |
680 | if (ts->u.derived->attr.unlimited_polymorphic) |
681 | { | |
682 | /* Find the top-level namespace. */ | |
683 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
684 | if (!ns->parent) | |
685 | break; | |
686 | } | |
687 | else | |
688 | ns = ts->u.derived->ns; | |
689 | ||
690 | gfc_find_symbol (name, ns, 0, &fclass); | |
d15bac21 JW |
691 | if (fclass == NULL) |
692 | { | |
693 | gfc_symtree *st; | |
694 | /* If not there, create a new symbol. */ | |
8b704316 PT |
695 | fclass = gfc_new_symbol (name, ns); |
696 | st = gfc_new_symtree (&ns->sym_root, name); | |
d15bac21 JW |
697 | st->n.sym = fclass; |
698 | gfc_set_sym_referenced (fclass); | |
699 | fclass->refs++; | |
700 | fclass->ts.type = BT_UNKNOWN; | |
8b704316 | 701 | if (!ts->u.derived->attr.unlimited_polymorphic) |
94241120 | 702 | fclass->attr.abstract = ts->u.derived->attr.abstract; |
42ff605a | 703 | fclass->f2k_derived = gfc_get_namespace (NULL, 0); |
cddf0123 | 704 | if (!gfc_add_flavor (&fclass->attr, FL_DERIVED, NULL, |
524af0d6 JB |
705 | &gfc_current_locus)) |
706 | return false; | |
d15bac21 | 707 | |
b04533af | 708 | /* Add component '_data'. */ |
524af0d6 JB |
709 | if (!gfc_add_component (fclass, "_data", &c)) |
710 | return false; | |
d15bac21 JW |
711 | c->ts = *ts; |
712 | c->ts.type = BT_DERIVED; | |
713 | c->attr.access = ACCESS_PRIVATE; | |
714 | c->ts.u.derived = ts->u.derived; | |
715 | c->attr.class_pointer = attr->pointer; | |
7d40e49f TB |
716 | c->attr.pointer = attr->pointer || (attr->dummy && !attr->allocatable) |
717 | || attr->select_type_temporary; | |
d15bac21 JW |
718 | c->attr.allocatable = attr->allocatable; |
719 | c->attr.dimension = attr->dimension; | |
720 | c->attr.codimension = attr->codimension; | |
8b704316 | 721 | c->attr.abstract = fclass->attr.abstract; |
d15bac21 JW |
722 | c->as = (*as); |
723 | c->initializer = NULL; | |
724 | ||
b04533af | 725 | /* Add component '_vptr'. */ |
524af0d6 JB |
726 | if (!gfc_add_component (fclass, "_vptr", &c)) |
727 | return false; | |
d15bac21 | 728 | c->ts.type = BT_DERIVED; |
5b384b3d PT |
729 | c->attr.access = ACCESS_PRIVATE; |
730 | c->attr.pointer = 1; | |
9b6da3c7 JW |
731 | |
732 | if (ts->u.derived->attr.unlimited_polymorphic) | |
d15bac21 | 733 | { |
88ce8031 | 734 | vtab = gfc_find_derived_vtab (ts->u.derived); |
d15bac21 JW |
735 | gcc_assert (vtab); |
736 | c->ts.u.derived = vtab->ts.u.derived; | |
5b384b3d PT |
737 | |
738 | /* Add component '_len'. Only unlimited polymorphic pointers may | |
739 | have a string assigned to them, i.e., only those need the _len | |
740 | component. */ | |
741 | if (!gfc_add_component (fclass, "_len", &c)) | |
742 | return false; | |
743 | c->ts.type = BT_INTEGER; | |
40cc684d | 744 | c->ts.kind = gfc_charlen_int_kind; |
5b384b3d PT |
745 | c->attr.access = ACCESS_PRIVATE; |
746 | c->attr.artificial = 1; | |
d15bac21 | 747 | } |
9b6da3c7 JW |
748 | else |
749 | /* Build vtab later. */ | |
750 | c->ts.u.derived = NULL; | |
d15bac21 JW |
751 | } |
752 | ||
8b704316 | 753 | if (!ts->u.derived->attr.unlimited_polymorphic) |
d15bac21 | 754 | { |
8b704316 PT |
755 | /* Since the extension field is 8 bit wide, we can only have |
756 | up to 255 extension levels. */ | |
757 | if (ts->u.derived->attr.extension == 255) | |
758 | { | |
c4100eae | 759 | gfc_error ("Maximum extension level reached with type %qs at %L", |
8b704316 | 760 | ts->u.derived->name, &ts->u.derived->declared_at); |
524af0d6 | 761 | return false; |
8b704316 PT |
762 | } |
763 | ||
764 | fclass->attr.extension = ts->u.derived->attr.extension + 1; | |
765 | fclass->attr.alloc_comp = ts->u.derived->attr.alloc_comp; | |
558f3755 | 766 | fclass->attr.coarray_comp = ts->u.derived->attr.coarray_comp; |
d15bac21 | 767 | } |
8b704316 | 768 | |
d15bac21 JW |
769 | fclass->attr.is_class = 1; |
770 | ts->u.derived = fclass; | |
c49ea23d PT |
771 | attr->allocatable = attr->pointer = attr->dimension = attr->codimension = 0; |
772 | (*as) = NULL; | |
2004617a | 773 | free (name); |
524af0d6 | 774 | return true; |
d15bac21 JW |
775 | } |
776 | ||
777 | ||
88ce8031 JW |
778 | /* Add a procedure pointer component to the vtype |
779 | to represent a specific type-bound procedure. */ | |
780 | ||
d15bac21 | 781 | static void |
88ce8031 | 782 | add_proc_comp (gfc_symbol *vtype, const char *name, gfc_typebound_proc *tb) |
d15bac21 | 783 | { |
88ce8031 | 784 | gfc_component *c; |
fd83db3d | 785 | |
5d382ed6 | 786 | if (tb->non_overridable && !tb->overridden) |
fd83db3d | 787 | return; |
8b704316 | 788 | |
f6288c24 | 789 | c = gfc_find_component (vtype, name, true, true, NULL); |
88ce8031 JW |
790 | |
791 | if (c == NULL) | |
d15bac21 | 792 | { |
88ce8031 | 793 | /* Add procedure component. */ |
524af0d6 | 794 | if (!gfc_add_component (vtype, name, &c)) |
d15bac21 | 795 | return; |
d15bac21 | 796 | |
88ce8031 JW |
797 | if (!c->tb) |
798 | c->tb = XCNEW (gfc_typebound_proc); | |
799 | *c->tb = *tb; | |
800 | c->tb->ppc = 1; | |
801 | c->attr.procedure = 1; | |
802 | c->attr.proc_pointer = 1; | |
803 | c->attr.flavor = FL_PROCEDURE; | |
804 | c->attr.access = ACCESS_PRIVATE; | |
805 | c->attr.external = 1; | |
806 | c->attr.untyped = 1; | |
807 | c->attr.if_source = IFSRC_IFBODY; | |
d15bac21 JW |
808 | } |
809 | else if (c->attr.proc_pointer && c->tb) | |
810 | { | |
88ce8031 | 811 | *c->tb = *tb; |
d15bac21 | 812 | c->tb->ppc = 1; |
1d0134b3 JW |
813 | } |
814 | ||
815 | if (tb->u.specific) | |
816 | { | |
e8ed3750 JW |
817 | gfc_symbol *ifc = tb->u.specific->n.sym; |
818 | c->ts.interface = ifc; | |
1d0134b3 JW |
819 | if (!tb->deferred) |
820 | c->initializer = gfc_get_variable_expr (tb->u.specific); | |
e8ed3750 | 821 | c->attr.pure = ifc->attr.pure; |
d15bac21 JW |
822 | } |
823 | } | |
824 | ||
88ce8031 JW |
825 | |
826 | /* Add all specific type-bound procedures in the symtree 'st' to a vtype. */ | |
827 | ||
d15bac21 | 828 | static void |
88ce8031 | 829 | add_procs_to_declared_vtab1 (gfc_symtree *st, gfc_symbol *vtype) |
d15bac21 | 830 | { |
d15bac21 JW |
831 | if (!st) |
832 | return; | |
833 | ||
834 | if (st->left) | |
88ce8031 | 835 | add_procs_to_declared_vtab1 (st->left, vtype); |
d15bac21 JW |
836 | |
837 | if (st->right) | |
88ce8031 | 838 | add_procs_to_declared_vtab1 (st->right, vtype); |
d15bac21 | 839 | |
8b704316 | 840 | if (st->n.tb && !st->n.tb->error |
aea18e92 | 841 | && !st->n.tb->is_generic && st->n.tb->u.specific) |
88ce8031 | 842 | add_proc_comp (vtype, st->name, st->n.tb); |
d15bac21 JW |
843 | } |
844 | ||
845 | ||
88ce8031 JW |
846 | /* Copy procedure pointers components from the parent type. */ |
847 | ||
d15bac21 | 848 | static void |
88ce8031 | 849 | copy_vtab_proc_comps (gfc_symbol *declared, gfc_symbol *vtype) |
d15bac21 | 850 | { |
88ce8031 | 851 | gfc_component *cmp; |
d15bac21 JW |
852 | gfc_symbol *vtab; |
853 | ||
88ce8031 | 854 | vtab = gfc_find_derived_vtab (declared); |
d15bac21 JW |
855 | |
856 | for (cmp = vtab->ts.u.derived->components; cmp; cmp = cmp->next) | |
857 | { | |
f6288c24 | 858 | if (gfc_find_component (vtype, cmp->name, true, true, NULL)) |
d15bac21 JW |
859 | continue; |
860 | ||
88ce8031 | 861 | add_proc_comp (vtype, cmp->name, cmp->tb); |
d15bac21 JW |
862 | } |
863 | } | |
864 | ||
d15bac21 | 865 | |
8e54f139 TB |
866 | /* Returns true if any of its nonpointer nonallocatable components or |
867 | their nonpointer nonallocatable subcomponents has a finalization | |
868 | subroutine. */ | |
869 | ||
870 | static bool | |
871 | has_finalizer_component (gfc_symbol *derived) | |
872 | { | |
873 | gfc_component *c; | |
874 | ||
875 | for (c = derived->components; c; c = c->next) | |
cdeb16cb JW |
876 | if (c->ts.type == BT_DERIVED && !c->attr.pointer && !c->attr.allocatable) |
877 | { | |
878 | if (c->ts.u.derived->f2k_derived | |
879 | && c->ts.u.derived->f2k_derived->finalizers) | |
880 | return true; | |
881 | ||
882 | /* Stop infinite recursion through this function by inhibiting | |
883 | calls when the derived type and that of the component are | |
884 | the same. */ | |
885 | if (!gfc_compare_derived_types (derived, c->ts.u.derived) | |
886 | && has_finalizer_component (c->ts.u.derived)) | |
887 | return true; | |
888 | } | |
8e54f139 TB |
889 | return false; |
890 | } | |
891 | ||
892 | ||
c9d3fa76 JW |
893 | static bool |
894 | comp_is_finalizable (gfc_component *comp) | |
895 | { | |
9b6da3c7 JW |
896 | if (comp->attr.proc_pointer) |
897 | return false; | |
898 | else if (comp->attr.allocatable && comp->ts.type != BT_CLASS) | |
c9d3fa76 JW |
899 | return true; |
900 | else if (comp->ts.type == BT_DERIVED && !comp->attr.pointer | |
901 | && (comp->ts.u.derived->attr.alloc_comp | |
902 | || has_finalizer_component (comp->ts.u.derived) | |
903 | || (comp->ts.u.derived->f2k_derived | |
904 | && comp->ts.u.derived->f2k_derived->finalizers))) | |
905 | return true; | |
906 | else if (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
907 | && CLASS_DATA (comp)->attr.allocatable) | |
908 | return true; | |
909 | else | |
910 | return false; | |
911 | } | |
912 | ||
913 | ||
8e54f139 TB |
914 | /* Call DEALLOCATE for the passed component if it is allocatable, if it is |
915 | neither allocatable nor a pointer but has a finalizer, call it. If it | |
bc7a2337 TB |
916 | is a nonpointer component with allocatable components or has finalizers, walk |
917 | them. Either of them is required; other nonallocatables and pointers aren't | |
8e54f139 TB |
918 | handled gracefully. |
919 | Note: If the component is allocatable, the DEALLOCATE handling takes care | |
920 | of calling the appropriate finalizers, coarray deregistering, and | |
921 | deallocation of allocatable subcomponents. */ | |
922 | ||
923 | static void | |
924 | finalize_component (gfc_expr *expr, gfc_symbol *derived, gfc_component *comp, | |
807b50a7 JW |
925 | gfc_symbol *stat, gfc_symbol *fini_coarray, gfc_code **code, |
926 | gfc_namespace *sub_ns) | |
8e54f139 TB |
927 | { |
928 | gfc_expr *e; | |
929 | gfc_ref *ref; | |
1af22e45 | 930 | gfc_was_finalized *f; |
8e54f139 | 931 | |
c9d3fa76 | 932 | if (!comp_is_finalizable (comp)) |
8e54f139 TB |
933 | return; |
934 | ||
1af22e45 TK |
935 | /* If this expression with this component has been finalized |
936 | already in this namespace, there is nothing to do. */ | |
937 | for (f = sub_ns->was_finalized; f; f = f->next) | |
938 | { | |
939 | if (f->e == expr && f->c == comp) | |
940 | return; | |
941 | } | |
b81f7b83 | 942 | |
8e54f139 TB |
943 | e = gfc_copy_expr (expr); |
944 | if (!e->ref) | |
945 | e->ref = ref = gfc_get_ref (); | |
946 | else | |
947 | { | |
948 | for (ref = e->ref; ref->next; ref = ref->next) | |
949 | ; | |
950 | ref->next = gfc_get_ref (); | |
951 | ref = ref->next; | |
952 | } | |
953 | ref->type = REF_COMPONENT; | |
954 | ref->u.c.sym = derived; | |
955 | ref->u.c.component = comp; | |
956 | e->ts = comp->ts; | |
957 | ||
16023efc | 958 | if (comp->attr.dimension || comp->attr.codimension |
8e54f139 | 959 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) |
16023efc TB |
960 | && (CLASS_DATA (comp)->attr.dimension |
961 | || CLASS_DATA (comp)->attr.codimension))) | |
8e54f139 TB |
962 | { |
963 | ref->next = gfc_get_ref (); | |
964 | ref->next->type = REF_ARRAY; | |
8e54f139 TB |
965 | ref->next->u.ar.dimen = 0; |
966 | ref->next->u.ar.as = comp->ts.type == BT_CLASS ? CLASS_DATA (comp)->as | |
967 | : comp->as; | |
968 | e->rank = ref->next->u.ar.as->rank; | |
16023efc | 969 | ref->next->u.ar.type = e->rank ? AR_FULL : AR_ELEMENT; |
8e54f139 TB |
970 | } |
971 | ||
29a7d776 | 972 | /* Call DEALLOCATE (comp, stat=ignore). */ |
8e54f139 TB |
973 | if (comp->attr.allocatable |
974 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
975 | && CLASS_DATA (comp)->attr.allocatable)) | |
976 | { | |
29a7d776 TB |
977 | gfc_code *dealloc, *block = NULL; |
978 | ||
979 | /* Add IF (fini_coarray). */ | |
980 | if (comp->attr.codimension | |
981 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
652960d1 | 982 | && CLASS_DATA (comp)->attr.codimension)) |
29a7d776 | 983 | { |
11e5274a | 984 | block = gfc_get_code (EXEC_IF); |
29a7d776 TB |
985 | if (*code) |
986 | { | |
987 | (*code)->next = block; | |
988 | (*code) = (*code)->next; | |
989 | } | |
990 | else | |
991 | (*code) = block; | |
992 | ||
11e5274a | 993 | block->block = gfc_get_code (EXEC_IF); |
29a7d776 | 994 | block = block->block; |
29a7d776 TB |
995 | block->expr1 = gfc_lval_expr_from_sym (fini_coarray); |
996 | } | |
8e54f139 | 997 | |
11e5274a | 998 | dealloc = gfc_get_code (EXEC_DEALLOCATE); |
8e54f139 TB |
999 | |
1000 | dealloc->ext.alloc.list = gfc_get_alloc (); | |
1001 | dealloc->ext.alloc.list->expr = e; | |
29a7d776 | 1002 | dealloc->expr1 = gfc_lval_expr_from_sym (stat); |
8e54f139 | 1003 | |
807b50a7 JW |
1004 | gfc_code *cond = gfc_get_code (EXEC_IF); |
1005 | cond->block = gfc_get_code (EXEC_IF); | |
1006 | cond->block->expr1 = gfc_get_expr (); | |
1007 | cond->block->expr1->expr_type = EXPR_FUNCTION; | |
1011502b | 1008 | cond->block->expr1->where = gfc_current_locus; |
807b50a7 JW |
1009 | gfc_get_sym_tree ("associated", sub_ns, &cond->block->expr1->symtree, false); |
1010 | cond->block->expr1->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1011 | cond->block->expr1->symtree->n.sym->attr.intrinsic = 1; | |
1012 | cond->block->expr1->symtree->n.sym->result = cond->block->expr1->symtree->n.sym; | |
1013 | gfc_commit_symbol (cond->block->expr1->symtree->n.sym); | |
1014 | cond->block->expr1->ts.type = BT_LOGICAL; | |
1015 | cond->block->expr1->ts.kind = gfc_default_logical_kind; | |
1016 | cond->block->expr1->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_ASSOCIATED); | |
1017 | cond->block->expr1->value.function.actual = gfc_get_actual_arglist (); | |
1018 | cond->block->expr1->value.function.actual->expr = gfc_copy_expr (expr); | |
1019 | cond->block->expr1->value.function.actual->next = gfc_get_actual_arglist (); | |
1020 | cond->block->next = dealloc; | |
1021 | ||
29a7d776 | 1022 | if (block) |
807b50a7 | 1023 | block->next = cond; |
29a7d776 | 1024 | else if (*code) |
8e54f139 | 1025 | { |
807b50a7 | 1026 | (*code)->next = cond; |
8e54f139 TB |
1027 | (*code) = (*code)->next; |
1028 | } | |
1029 | else | |
807b50a7 | 1030 | (*code) = cond; |
811f902b | 1031 | |
8e54f139 TB |
1032 | } |
1033 | else if (comp->ts.type == BT_DERIVED | |
1034 | && comp->ts.u.derived->f2k_derived | |
1035 | && comp->ts.u.derived->f2k_derived->finalizers) | |
1036 | { | |
1037 | /* Call FINAL_WRAPPER (comp); */ | |
1038 | gfc_code *final_wrap; | |
1039 | gfc_symbol *vtab; | |
1040 | gfc_component *c; | |
1041 | ||
1042 | vtab = gfc_find_derived_vtab (comp->ts.u.derived); | |
1043 | for (c = vtab->ts.u.derived->components; c; c = c->next) | |
1044 | if (strcmp (c->name, "_final") == 0) | |
1045 | break; | |
1046 | ||
1047 | gcc_assert (c); | |
11e5274a | 1048 | final_wrap = gfc_get_code (EXEC_CALL); |
8e54f139 TB |
1049 | final_wrap->symtree = c->initializer->symtree; |
1050 | final_wrap->resolved_sym = c->initializer->symtree->n.sym; | |
1051 | final_wrap->ext.actual = gfc_get_actual_arglist (); | |
1052 | final_wrap->ext.actual->expr = e; | |
1053 | ||
1054 | if (*code) | |
1055 | { | |
1056 | (*code)->next = final_wrap; | |
1057 | (*code) = (*code)->next; | |
1058 | } | |
1059 | else | |
1060 | (*code) = final_wrap; | |
1061 | } | |
1062 | else | |
1063 | { | |
1064 | gfc_component *c; | |
1065 | ||
1066 | for (c = comp->ts.u.derived->components; c; c = c->next) | |
807b50a7 JW |
1067 | finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray, code, |
1068 | sub_ns); | |
fc2655fb | 1069 | gfc_free_expr (e); |
8e54f139 | 1070 | } |
1af22e45 TK |
1071 | |
1072 | /* Record that this was finalized already in this namespace. */ | |
1073 | f = sub_ns->was_finalized; | |
1074 | sub_ns->was_finalized = XCNEW (gfc_was_finalized); | |
1075 | sub_ns->was_finalized->e = expr; | |
1076 | sub_ns->was_finalized->c = comp; | |
1077 | sub_ns->was_finalized->next = f; | |
8e54f139 TB |
1078 | } |
1079 | ||
1080 | ||
1081 | /* Generate code equivalent to | |
1082 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b | 1083 | + offset, c_ptr), ptr). */ |
8e54f139 TB |
1084 | |
1085 | static gfc_code * | |
9e04287b TB |
1086 | finalization_scalarizer (gfc_symbol *array, gfc_symbol *ptr, |
1087 | gfc_expr *offset, gfc_namespace *sub_ns) | |
8e54f139 TB |
1088 | { |
1089 | gfc_code *block; | |
9e04287b | 1090 | gfc_expr *expr, *expr2; |
8e54f139 TB |
1091 | |
1092 | /* C_F_POINTER(). */ | |
11e5274a | 1093 | block = gfc_get_code (EXEC_CALL); |
8e54f139 TB |
1094 | gfc_get_sym_tree ("c_f_pointer", sub_ns, &block->symtree, true); |
1095 | block->resolved_sym = block->symtree->n.sym; | |
1096 | block->resolved_sym->attr.flavor = FL_PROCEDURE; | |
1097 | block->resolved_sym->attr.intrinsic = 1; | |
cbde6c0f | 1098 | block->resolved_sym->attr.subroutine = 1; |
8e54f139 TB |
1099 | block->resolved_sym->from_intmod = INTMOD_ISO_C_BINDING; |
1100 | block->resolved_sym->intmod_sym_id = ISOCBINDING_F_POINTER; | |
cbde6c0f | 1101 | block->resolved_isym = gfc_intrinsic_subroutine_by_id (GFC_ISYM_C_F_POINTER); |
8e54f139 TB |
1102 | gfc_commit_symbol (block->resolved_sym); |
1103 | ||
1104 | /* C_F_POINTER's first argument: TRANSFER ( <addr>, c_intptr_t). */ | |
1105 | block->ext.actual = gfc_get_actual_arglist (); | |
1106 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1107 | block->ext.actual->next->expr = gfc_get_int_expr (gfc_index_integer_kind, | |
1108 | NULL, 0); | |
1cc0e193 | 1109 | block->ext.actual->next->next = gfc_get_actual_arglist (); /* SIZE. */ |
8e54f139 TB |
1110 | |
1111 | /* The <addr> part: TRANSFER (C_LOC (array), c_intptr_t). */ | |
1112 | ||
8e54f139 TB |
1113 | /* TRANSFER's first argument: C_LOC (array). */ |
1114 | expr = gfc_get_expr (); | |
1115 | expr->expr_type = EXPR_FUNCTION; | |
1116 | gfc_get_sym_tree ("c_loc", sub_ns, &expr->symtree, false); | |
1117 | expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1118 | expr->symtree->n.sym->intmod_sym_id = ISOCBINDING_LOC; | |
1119 | expr->symtree->n.sym->attr.intrinsic = 1; | |
1120 | expr->symtree->n.sym->from_intmod = INTMOD_ISO_C_BINDING; | |
cbde6c0f | 1121 | expr->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_C_LOC); |
8e54f139 TB |
1122 | expr->value.function.actual = gfc_get_actual_arglist (); |
1123 | expr->value.function.actual->expr | |
1124 | = gfc_lval_expr_from_sym (array); | |
1125 | expr->symtree->n.sym->result = expr->symtree->n.sym; | |
1126 | gfc_commit_symbol (expr->symtree->n.sym); | |
1127 | expr->ts.type = BT_INTEGER; | |
1128 | expr->ts.kind = gfc_index_integer_kind; | |
1011502b | 1129 | expr->where = gfc_current_locus; |
6838c137 TB |
1130 | |
1131 | /* TRANSFER. */ | |
1132 | expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_TRANSFER, "transfer", | |
cbde6c0f | 1133 | gfc_current_locus, 3, expr, |
6838c137 | 1134 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1135 | NULL, 0), NULL); |
6838c137 TB |
1136 | expr2->ts.type = BT_INTEGER; |
1137 | expr2->ts.kind = gfc_index_integer_kind; | |
8e54f139 | 1138 | |
8e54f139 TB |
1139 | /* <array addr> + <offset>. */ |
1140 | block->ext.actual->expr = gfc_get_expr (); | |
1141 | block->ext.actual->expr->expr_type = EXPR_OP; | |
1142 | block->ext.actual->expr->value.op.op = INTRINSIC_PLUS; | |
1143 | block->ext.actual->expr->value.op.op1 = expr2; | |
9e04287b | 1144 | block->ext.actual->expr->value.op.op2 = offset; |
8e54f139 | 1145 | block->ext.actual->expr->ts = expr->ts; |
1011502b | 1146 | block->ext.actual->expr->where = gfc_current_locus; |
8e54f139 TB |
1147 | |
1148 | /* C_F_POINTER's 2nd arg: ptr -- and its absent shape=. */ | |
1149 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1150 | block->ext.actual->next->expr = gfc_lval_expr_from_sym (ptr); | |
1151 | block->ext.actual->next->next = gfc_get_actual_arglist (); | |
1152 | ||
1153 | return block; | |
1154 | } | |
1155 | ||
1156 | ||
9e04287b TB |
1157 | /* Calculates the offset to the (idx+1)th element of an array, taking the |
1158 | stride into account. It generates the code: | |
1159 | offset = 0 | |
1160 | do idx2 = 1, rank | |
1161 | offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) * strides(idx2) | |
1162 | end do | |
1163 | offset = offset * byte_stride. */ | |
1164 | ||
1165 | static gfc_code* | |
1166 | finalization_get_offset (gfc_symbol *idx, gfc_symbol *idx2, gfc_symbol *offset, | |
1167 | gfc_symbol *strides, gfc_symbol *sizes, | |
1168 | gfc_symbol *byte_stride, gfc_expr *rank, | |
1169 | gfc_code *block, gfc_namespace *sub_ns) | |
1170 | { | |
1171 | gfc_iterator *iter; | |
1172 | gfc_expr *expr, *expr2; | |
1173 | ||
1174 | /* offset = 0. */ | |
11e5274a | 1175 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1176 | block = block->next; |
9e04287b TB |
1177 | block->expr1 = gfc_lval_expr_from_sym (offset); |
1178 | block->expr2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1179 | ||
1180 | /* Create loop. */ | |
1181 | iter = gfc_get_iterator (); | |
1182 | iter->var = gfc_lval_expr_from_sym (idx2); | |
1183 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1184 | iter->end = gfc_copy_expr (rank); | |
1185 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 1186 | block->next = gfc_get_code (EXEC_DO); |
9e04287b | 1187 | block = block->next; |
9e04287b | 1188 | block->ext.iterator = iter; |
11e5274a | 1189 | block->block = gfc_get_code (EXEC_DO); |
9e04287b TB |
1190 | |
1191 | /* Loop body: offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) | |
1192 | * strides(idx2). */ | |
1193 | ||
1194 | /* mod (idx, sizes(idx2)). */ | |
6838c137 TB |
1195 | expr = gfc_lval_expr_from_sym (sizes); |
1196 | expr->ref = gfc_get_ref (); | |
1197 | expr->ref->type = REF_ARRAY; | |
1198 | expr->ref->u.ar.as = sizes->as; | |
1199 | expr->ref->u.ar.type = AR_ELEMENT; | |
1200 | expr->ref->u.ar.dimen = 1; | |
1201 | expr->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1202 | expr->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1011502b | 1203 | expr->where = sizes->declared_at; |
6838c137 TB |
1204 | |
1205 | expr = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_MOD, "mod", | |
1206 | gfc_current_locus, 2, | |
1207 | gfc_lval_expr_from_sym (idx), expr); | |
9e04287b TB |
1208 | expr->ts = idx->ts; |
1209 | ||
1210 | /* (...) / sizes(idx2-1). */ | |
1211 | expr2 = gfc_get_expr (); | |
1212 | expr2->expr_type = EXPR_OP; | |
1213 | expr2->value.op.op = INTRINSIC_DIVIDE; | |
1214 | expr2->value.op.op1 = expr; | |
1215 | expr2->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1216 | expr2->value.op.op2->ref = gfc_get_ref (); | |
1217 | expr2->value.op.op2->ref->type = REF_ARRAY; | |
1218 | expr2->value.op.op2->ref->u.ar.as = sizes->as; | |
1219 | expr2->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1220 | expr2->value.op.op2->ref->u.ar.dimen = 1; | |
1221 | expr2->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1222 | expr2->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1223 | expr2->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1011502b | 1224 | expr2->value.op.op2->ref->u.ar.start[0]->where = gfc_current_locus; |
9e04287b TB |
1225 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; |
1226 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1227 | = gfc_lval_expr_from_sym (idx2); | |
1228 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1229 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1230 | expr2->value.op.op2->ref->u.ar.start[0]->ts | |
1231 | = expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1232 | expr2->ts = idx->ts; | |
1011502b | 1233 | expr2->where = gfc_current_locus; |
9e04287b TB |
1234 | |
1235 | /* ... * strides(idx2). */ | |
1236 | expr = gfc_get_expr (); | |
1237 | expr->expr_type = EXPR_OP; | |
1238 | expr->value.op.op = INTRINSIC_TIMES; | |
1239 | expr->value.op.op1 = expr2; | |
1240 | expr->value.op.op2 = gfc_lval_expr_from_sym (strides); | |
1241 | expr->value.op.op2->ref = gfc_get_ref (); | |
1242 | expr->value.op.op2->ref->type = REF_ARRAY; | |
1243 | expr->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1244 | expr->value.op.op2->ref->u.ar.dimen = 1; | |
1245 | expr->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1246 | expr->value.op.op2->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1247 | expr->value.op.op2->ref->u.ar.as = strides->as; | |
1248 | expr->ts = idx->ts; | |
1011502b | 1249 | expr->where = gfc_current_locus; |
9e04287b TB |
1250 | |
1251 | /* offset = offset + ... */ | |
11e5274a | 1252 | block->block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b TB |
1253 | block->block->next->expr1 = gfc_lval_expr_from_sym (offset); |
1254 | block->block->next->expr2 = gfc_get_expr (); | |
1255 | block->block->next->expr2->expr_type = EXPR_OP; | |
1256 | block->block->next->expr2->value.op.op = INTRINSIC_PLUS; | |
1257 | block->block->next->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1258 | block->block->next->expr2->value.op.op2 = expr; | |
1259 | block->block->next->expr2->ts = idx->ts; | |
1011502b | 1260 | block->block->next->expr2->where = gfc_current_locus; |
9e04287b TB |
1261 | |
1262 | /* After the loop: offset = offset * byte_stride. */ | |
11e5274a | 1263 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1264 | block = block->next; |
9e04287b TB |
1265 | block->expr1 = gfc_lval_expr_from_sym (offset); |
1266 | block->expr2 = gfc_get_expr (); | |
1267 | block->expr2->expr_type = EXPR_OP; | |
1268 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1269 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1270 | block->expr2->value.op.op2 = gfc_lval_expr_from_sym (byte_stride); | |
1271 | block->expr2->ts = block->expr2->value.op.op1->ts; | |
1011502b | 1272 | block->expr2->where = gfc_current_locus; |
9e04287b TB |
1273 | return block; |
1274 | } | |
1275 | ||
1276 | ||
29a7d776 TB |
1277 | /* Insert code of the following form: |
1278 | ||
9e04287b TB |
1279 | block |
1280 | integer(c_intptr_t) :: i | |
1281 | ||
1282 | if ((byte_stride == STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1283 | && (is_contiguous || !final_rank3->attr.contiguous | |
1284 | || final_rank3->as->type != AS_ASSUMED_SHAPE)) | |
1285 | || 0 == STORAGE_SIZE (array)) then | |
1286 | call final_rank3 (array) | |
1287 | else | |
1288 | block | |
1289 | integer(c_intptr_t) :: offset, j | |
1290 | type(t) :: tmp(shape (array)) | |
1291 | ||
1292 | do i = 0, size (array)-1 | |
1293 | offset = obtain_offset(i, strides, sizes, byte_stride) | |
1294 | addr = transfer (c_loc (array), addr) + offset | |
1295 | call c_f_pointer (transfer (addr, cptr), ptr) | |
1296 | ||
1297 | addr = transfer (c_loc (tmp), addr) | |
1298 | + i * STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1299 | call c_f_pointer (transfer (addr, cptr), ptr2) | |
1300 | ptr2 = ptr | |
1301 | end do | |
1302 | call final_rank3 (tmp) | |
1303 | end block | |
1304 | end if | |
1305 | block */ | |
29a7d776 TB |
1306 | |
1307 | static void | |
1308 | finalizer_insert_packed_call (gfc_code *block, gfc_finalizer *fini, | |
9e04287b | 1309 | gfc_symbol *array, gfc_symbol *byte_stride, |
29a7d776 | 1310 | gfc_symbol *idx, gfc_symbol *ptr, |
6838c137 | 1311 | gfc_symbol *nelem, |
9e04287b TB |
1312 | gfc_symbol *strides, gfc_symbol *sizes, |
1313 | gfc_symbol *idx2, gfc_symbol *offset, | |
1314 | gfc_symbol *is_contiguous, gfc_expr *rank, | |
29a7d776 TB |
1315 | gfc_namespace *sub_ns) |
1316 | { | |
1317 | gfc_symbol *tmp_array, *ptr2; | |
9e04287b | 1318 | gfc_expr *size_expr, *offset2, *expr; |
29a7d776 TB |
1319 | gfc_namespace *ns; |
1320 | gfc_iterator *iter; | |
9e04287b | 1321 | gfc_code *block2; |
29a7d776 TB |
1322 | int i; |
1323 | ||
11e5274a | 1324 | block->next = gfc_get_code (EXEC_IF); |
29a7d776 | 1325 | block = block->next; |
29a7d776 | 1326 | |
11e5274a | 1327 | block->block = gfc_get_code (EXEC_IF); |
29a7d776 | 1328 | block = block->block; |
29a7d776 TB |
1329 | |
1330 | /* size_expr = STORAGE_SIZE (...) / NUMERIC_STORAGE_SIZE. */ | |
1331 | size_expr = gfc_get_expr (); | |
1332 | size_expr->where = gfc_current_locus; | |
1333 | size_expr->expr_type = EXPR_OP; | |
1334 | size_expr->value.op.op = INTRINSIC_DIVIDE; | |
1335 | ||
1336 | /* STORAGE_SIZE (array,kind=c_intptr_t). */ | |
6838c137 TB |
1337 | size_expr->value.op.op1 |
1338 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STORAGE_SIZE, | |
1339 | "storage_size", gfc_current_locus, 2, | |
cbde6c0f | 1340 | gfc_lval_expr_from_sym (array), |
6838c137 | 1341 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1342 | NULL, 0)); |
29a7d776 TB |
1343 | |
1344 | /* NUMERIC_STORAGE_SIZE. */ | |
1345 | size_expr->value.op.op2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, | |
1346 | gfc_character_storage_size); | |
1347 | size_expr->value.op.op1->ts = size_expr->value.op.op2->ts; | |
1348 | size_expr->ts = size_expr->value.op.op1->ts; | |
1349 | ||
9e04287b TB |
1350 | /* IF condition: (stride == size_expr |
1351 | && ((fini's as->ASSUMED_SIZE && !fini's attr.contiguous) | |
1352 | || is_contiguous) | |
1353 | || 0 == size_expr. */ | |
29a7d776 | 1354 | block->expr1 = gfc_get_expr (); |
29a7d776 | 1355 | block->expr1->ts.type = BT_LOGICAL; |
9e04287b | 1356 | block->expr1->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1357 | block->expr1->expr_type = EXPR_OP; |
1358 | block->expr1->where = gfc_current_locus; | |
1359 | ||
1360 | block->expr1->value.op.op = INTRINSIC_OR; | |
1361 | ||
9e04287b TB |
1362 | /* byte_stride == size_expr */ |
1363 | expr = gfc_get_expr (); | |
1364 | expr->ts.type = BT_LOGICAL; | |
1365 | expr->ts.kind = gfc_default_logical_kind; | |
1366 | expr->expr_type = EXPR_OP; | |
1367 | expr->where = gfc_current_locus; | |
1368 | expr->value.op.op = INTRINSIC_EQ; | |
1369 | expr->value.op.op1 | |
1370 | = gfc_lval_expr_from_sym (byte_stride); | |
1371 | expr->value.op.op2 = size_expr; | |
1372 | ||
cbde6c0f | 1373 | /* If strides aren't allowed (not assumed shape or CONTIGUOUS), |
9e04287b | 1374 | add is_contiguous check. */ |
cbde6c0f | 1375 | |
9e04287b TB |
1376 | if (fini->proc_tree->n.sym->formal->sym->as->type != AS_ASSUMED_SHAPE |
1377 | || fini->proc_tree->n.sym->formal->sym->attr.contiguous) | |
1378 | { | |
1379 | gfc_expr *expr2; | |
1380 | expr2 = gfc_get_expr (); | |
1381 | expr2->ts.type = BT_LOGICAL; | |
1382 | expr2->ts.kind = gfc_default_logical_kind; | |
1383 | expr2->expr_type = EXPR_OP; | |
1384 | expr2->where = gfc_current_locus; | |
1385 | expr2->value.op.op = INTRINSIC_AND; | |
1386 | expr2->value.op.op1 = expr; | |
1387 | expr2->value.op.op2 = gfc_lval_expr_from_sym (is_contiguous); | |
1388 | expr = expr2; | |
1389 | } | |
1390 | ||
1391 | block->expr1->value.op.op1 = expr; | |
29a7d776 TB |
1392 | |
1393 | /* 0 == size_expr */ | |
1394 | block->expr1->value.op.op2 = gfc_get_expr (); | |
29a7d776 | 1395 | block->expr1->value.op.op2->ts.type = BT_LOGICAL; |
9e04287b | 1396 | block->expr1->value.op.op2->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1397 | block->expr1->value.op.op2->expr_type = EXPR_OP; |
1398 | block->expr1->value.op.op2->where = gfc_current_locus; | |
1399 | block->expr1->value.op.op2->value.op.op = INTRINSIC_EQ; | |
1400 | block->expr1->value.op.op2->value.op.op1 = | |
1401 | gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1402 | block->expr1->value.op.op2->value.op.op2 = gfc_copy_expr (size_expr); | |
1403 | ||
1404 | /* IF body: call final subroutine. */ | |
11e5274a | 1405 | block->next = gfc_get_code (EXEC_CALL); |
29a7d776 TB |
1406 | block->next->symtree = fini->proc_tree; |
1407 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1408 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1409 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
bf9f15ee PT |
1410 | block->next->ext.actual->next = gfc_get_actual_arglist (); |
1411 | block->next->ext.actual->next->expr = gfc_copy_expr (size_expr); | |
29a7d776 TB |
1412 | |
1413 | /* ELSE. */ | |
1414 | ||
11e5274a | 1415 | block->block = gfc_get_code (EXEC_IF); |
29a7d776 | 1416 | block = block->block; |
29a7d776 | 1417 | |
11e5274a JW |
1418 | /* BLOCK ... END BLOCK. */ |
1419 | block->next = gfc_get_code (EXEC_BLOCK); | |
29a7d776 TB |
1420 | block = block->next; |
1421 | ||
29a7d776 TB |
1422 | ns = gfc_build_block_ns (sub_ns); |
1423 | block->ext.block.ns = ns; | |
1424 | block->ext.block.assoc = NULL; | |
1425 | ||
1426 | gfc_get_symbol ("ptr2", ns, &ptr2); | |
1427 | ptr2->ts.type = BT_DERIVED; | |
1428 | ptr2->ts.u.derived = array->ts.u.derived; | |
1429 | ptr2->attr.flavor = FL_VARIABLE; | |
1430 | ptr2->attr.pointer = 1; | |
1431 | ptr2->attr.artificial = 1; | |
1432 | gfc_set_sym_referenced (ptr2); | |
1433 | gfc_commit_symbol (ptr2); | |
1434 | ||
1435 | gfc_get_symbol ("tmp_array", ns, &tmp_array); | |
1436 | tmp_array->ts.type = BT_DERIVED; | |
1437 | tmp_array->ts.u.derived = array->ts.u.derived; | |
1438 | tmp_array->attr.flavor = FL_VARIABLE; | |
29a7d776 TB |
1439 | tmp_array->attr.dimension = 1; |
1440 | tmp_array->attr.artificial = 1; | |
1441 | tmp_array->as = gfc_get_array_spec(); | |
1442 | tmp_array->attr.intent = INTENT_INOUT; | |
1443 | tmp_array->as->type = AS_EXPLICIT; | |
1444 | tmp_array->as->rank = fini->proc_tree->n.sym->formal->sym->as->rank; | |
1445 | ||
1446 | for (i = 0; i < tmp_array->as->rank; i++) | |
1447 | { | |
1448 | gfc_expr *shape_expr; | |
1449 | tmp_array->as->lower[i] = gfc_get_int_expr (gfc_default_integer_kind, | |
1450 | NULL, 1); | |
cbde6c0f | 1451 | /* SIZE (array, dim=i+1, kind=gfc_index_integer_kind). */ |
6838c137 TB |
1452 | shape_expr |
1453 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1454 | gfc_current_locus, 3, | |
1455 | gfc_lval_expr_from_sym (array), | |
1456 | gfc_get_int_expr (gfc_default_integer_kind, | |
1457 | NULL, i+1), | |
1458 | gfc_get_int_expr (gfc_default_integer_kind, | |
cbde6c0f TB |
1459 | NULL, |
1460 | gfc_index_integer_kind)); | |
1461 | shape_expr->ts.kind = gfc_index_integer_kind; | |
29a7d776 TB |
1462 | tmp_array->as->upper[i] = shape_expr; |
1463 | } | |
1464 | gfc_set_sym_referenced (tmp_array); | |
1465 | gfc_commit_symbol (tmp_array); | |
1466 | ||
1467 | /* Create loop. */ | |
1468 | iter = gfc_get_iterator (); | |
1469 | iter->var = gfc_lval_expr_from_sym (idx); | |
1470 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1471 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1472 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1473 | ||
11e5274a | 1474 | block = gfc_get_code (EXEC_DO); |
29a7d776 | 1475 | ns->code = block; |
29a7d776 | 1476 | block->ext.iterator = iter; |
11e5274a | 1477 | block->block = gfc_get_code (EXEC_DO); |
29a7d776 | 1478 | |
9e04287b TB |
1479 | /* Offset calculation for the new array: idx * size of type (in bytes). */ |
1480 | offset2 = gfc_get_expr (); | |
9e04287b | 1481 | offset2->expr_type = EXPR_OP; |
1011502b | 1482 | offset2->where = gfc_current_locus; |
9e04287b TB |
1483 | offset2->value.op.op = INTRINSIC_TIMES; |
1484 | offset2->value.op.op1 = gfc_lval_expr_from_sym (idx); | |
1485 | offset2->value.op.op2 = gfc_copy_expr (size_expr); | |
1486 | offset2->ts = byte_stride->ts; | |
1487 | ||
1488 | /* Offset calculation of "array". */ | |
1489 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1490 | byte_stride, rank, block->block, sub_ns); | |
1491 | ||
29a7d776 TB |
1492 | /* Create code for |
1493 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
1494 | + idx * stride, c_ptr), ptr). */ | |
9e04287b TB |
1495 | block2->next = finalization_scalarizer (array, ptr, |
1496 | gfc_lval_expr_from_sym (offset), | |
1497 | sub_ns); | |
1498 | block2 = block2->next; | |
1499 | block2->next = finalization_scalarizer (tmp_array, ptr2, offset2, sub_ns); | |
cbde6c0f | 1500 | block2 = block2->next; |
9e04287b | 1501 | |
29a7d776 | 1502 | /* ptr2 = ptr. */ |
11e5274a | 1503 | block2->next = gfc_get_code (EXEC_ASSIGN); |
cbde6c0f | 1504 | block2 = block2->next; |
cbde6c0f TB |
1505 | block2->expr1 = gfc_lval_expr_from_sym (ptr2); |
1506 | block2->expr2 = gfc_lval_expr_from_sym (ptr); | |
29a7d776 | 1507 | |
1cc0e193 | 1508 | /* Call now the user's final subroutine. */ |
11e5274a | 1509 | block->next = gfc_get_code (EXEC_CALL); |
29a7d776 | 1510 | block = block->next; |
29a7d776 TB |
1511 | block->symtree = fini->proc_tree; |
1512 | block->resolved_sym = fini->proc_tree->n.sym; | |
1513 | block->ext.actual = gfc_get_actual_arglist (); | |
1514 | block->ext.actual->expr = gfc_lval_expr_from_sym (tmp_array); | |
1515 | ||
1516 | if (fini->proc_tree->n.sym->formal->sym->attr.intent == INTENT_IN) | |
1517 | return; | |
1518 | ||
1519 | /* Copy back. */ | |
1520 | ||
1521 | /* Loop. */ | |
1522 | iter = gfc_get_iterator (); | |
1523 | iter->var = gfc_lval_expr_from_sym (idx); | |
1524 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1525 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1526 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1527 | ||
11e5274a | 1528 | block->next = gfc_get_code (EXEC_DO); |
29a7d776 | 1529 | block = block->next; |
29a7d776 | 1530 | block->ext.iterator = iter; |
11e5274a | 1531 | block->block = gfc_get_code (EXEC_DO); |
29a7d776 | 1532 | |
9e04287b TB |
1533 | /* Offset calculation of "array". */ |
1534 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1535 | byte_stride, rank, block->block, sub_ns); | |
1536 | ||
29a7d776 TB |
1537 | /* Create code for |
1538 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
1539 | + offset, c_ptr), ptr). */ |
1540 | block2->next = finalization_scalarizer (array, ptr, | |
1541 | gfc_lval_expr_from_sym (offset), | |
1542 | sub_ns); | |
1543 | block2 = block2->next; | |
cbde6c0f TB |
1544 | block2->next = finalization_scalarizer (tmp_array, ptr2, |
1545 | gfc_copy_expr (offset2), sub_ns); | |
9e04287b TB |
1546 | block2 = block2->next; |
1547 | ||
29a7d776 | 1548 | /* ptr = ptr2. */ |
11e5274a | 1549 | block2->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b TB |
1550 | block2->next->expr1 = gfc_lval_expr_from_sym (ptr); |
1551 | block2->next->expr2 = gfc_lval_expr_from_sym (ptr2); | |
29a7d776 TB |
1552 | } |
1553 | ||
1554 | ||
8e54f139 TB |
1555 | /* Generate the finalization/polymorphic freeing wrapper subroutine for the |
1556 | derived type "derived". The function first calls the approriate FINAL | |
1557 | subroutine, then it DEALLOCATEs (finalizes/frees) the allocatable | |
1558 | components (but not the inherited ones). Last, it calls the wrapper | |
1559 | subroutine of the parent. The generated wrapper procedure takes as argument | |
1560 | an assumed-rank array. | |
1561 | If neither allocatable components nor FINAL subroutines exists, the vtab | |
29a7d776 TB |
1562 | will contain a NULL pointer. |
1563 | The generated function has the form | |
1564 | _final(assumed-rank array, stride, skip_corarray) | |
1565 | where the array has to be contiguous (except of the lowest dimension). The | |
1566 | stride (in bytes) is used to allow different sizes for ancestor types by | |
1567 | skipping over the additionally added components in the scalarizer. If | |
1568 | "fini_coarray" is false, coarray components are not finalized to allow for | |
1569 | the correct semantic with intrinsic assignment. */ | |
8e54f139 TB |
1570 | |
1571 | static void | |
1572 | generate_finalization_wrapper (gfc_symbol *derived, gfc_namespace *ns, | |
1573 | const char *tname, gfc_component *vtab_final) | |
1574 | { | |
9e04287b TB |
1575 | gfc_symbol *final, *array, *fini_coarray, *byte_stride, *sizes, *strides; |
1576 | gfc_symbol *ptr = NULL, *idx, *idx2, *is_contiguous, *offset, *nelem; | |
8e54f139 TB |
1577 | gfc_component *comp; |
1578 | gfc_namespace *sub_ns; | |
9e04287b | 1579 | gfc_code *last_code, *block; |
2004617a | 1580 | char *name; |
8e54f139 | 1581 | bool finalizable_comp = false; |
29a7d776 | 1582 | bool expr_null_wrapper = false; |
9e04287b TB |
1583 | gfc_expr *ancestor_wrapper = NULL, *rank; |
1584 | gfc_iterator *iter; | |
8e54f139 | 1585 | |
7017a7a9 TB |
1586 | if (derived->attr.unlimited_polymorphic) |
1587 | { | |
1588 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1589 | return; | |
1590 | } | |
1591 | ||
1cc0e193 | 1592 | /* Search for the ancestor's finalizers. */ |
8e54f139 TB |
1593 | if (derived->attr.extension && derived->components |
1594 | && (!derived->components->ts.u.derived->attr.abstract | |
1595 | || has_finalizer_component (derived))) | |
1596 | { | |
1597 | gfc_symbol *vtab; | |
1598 | gfc_component *comp; | |
1599 | ||
1600 | vtab = gfc_find_derived_vtab (derived->components->ts.u.derived); | |
1601 | for (comp = vtab->ts.u.derived->components; comp; comp = comp->next) | |
1602 | if (comp->name[0] == '_' && comp->name[1] == 'f') | |
1603 | { | |
1604 | ancestor_wrapper = comp->initializer; | |
1605 | break; | |
1606 | } | |
1607 | } | |
1608 | ||
29a7d776 | 1609 | /* No wrapper of the ancestor and no own FINAL subroutines and allocatable |
d5029d45 | 1610 | components: Return a NULL() expression; we defer this a bit to have |
29a7d776 | 1611 | an interface declaration. */ |
8e54f139 TB |
1612 | if ((!ancestor_wrapper || ancestor_wrapper->expr_type == EXPR_NULL) |
1613 | && !derived->attr.alloc_comp | |
1614 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers) | |
1615 | && !has_finalizer_component (derived)) | |
29a7d776 TB |
1616 | expr_null_wrapper = true; |
1617 | else | |
1618 | /* Check whether there are new allocatable components. */ | |
1619 | for (comp = derived->components; comp; comp = comp->next) | |
1620 | { | |
1621 | if (comp == derived->components && derived->attr.extension | |
1622 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
8e54f139 TB |
1623 | continue; |
1624 | ||
c9d3fa76 | 1625 | finalizable_comp |= comp_is_finalizable (comp); |
29a7d776 | 1626 | } |
8e54f139 TB |
1627 | |
1628 | /* If there is no new finalizer and no new allocatable, return with | |
1629 | an expr to the ancestor's one. */ | |
29a7d776 TB |
1630 | if (!expr_null_wrapper && !finalizable_comp |
1631 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers)) | |
8e54f139 | 1632 | { |
29a7d776 TB |
1633 | gcc_assert (ancestor_wrapper && ancestor_wrapper->ref == NULL |
1634 | && ancestor_wrapper->expr_type == EXPR_VARIABLE); | |
8e54f139 | 1635 | vtab_final->initializer = gfc_copy_expr (ancestor_wrapper); |
29a7d776 | 1636 | vtab_final->ts.interface = vtab_final->initializer->symtree->n.sym; |
8e54f139 TB |
1637 | return; |
1638 | } | |
1639 | ||
1640 | /* We now create a wrapper, which does the following: | |
1641 | 1. Call the suitable finalization subroutine for this type | |
1642 | 2. Loop over all noninherited allocatable components and noninherited | |
1643 | components with allocatable components and DEALLOCATE those; this will | |
1644 | take care of finalizers, coarray deregistering and allocatable | |
1645 | nested components. | |
1646 | 3. Call the ancestor's finalizer. */ | |
1647 | ||
1648 | /* Declare the wrapper function; it takes an assumed-rank array | |
1cc0e193 | 1649 | and a VALUE logical as arguments. */ |
8e54f139 TB |
1650 | |
1651 | /* Set up the namespace. */ | |
1652 | sub_ns = gfc_get_namespace (ns, 0); | |
1653 | sub_ns->sibling = ns->contained; | |
29a7d776 TB |
1654 | if (!expr_null_wrapper) |
1655 | ns->contained = sub_ns; | |
8e54f139 TB |
1656 | sub_ns->resolved = 1; |
1657 | ||
1658 | /* Set up the procedure symbol. */ | |
2004617a | 1659 | name = xasprintf ("__final_%s", tname); |
8e54f139 TB |
1660 | gfc_get_symbol (name, sub_ns, &final); |
1661 | sub_ns->proc_name = final; | |
1662 | final->attr.flavor = FL_PROCEDURE; | |
29a7d776 TB |
1663 | final->attr.function = 1; |
1664 | final->attr.pure = 0; | |
43076492 | 1665 | final->attr.recursive = 1; |
29a7d776 TB |
1666 | final->result = final; |
1667 | final->ts.type = BT_INTEGER; | |
1668 | final->ts.kind = 4; | |
8e54f139 | 1669 | final->attr.artificial = 1; |
2ab320ad | 1670 | final->attr.always_explicit = 1; |
29a7d776 | 1671 | final->attr.if_source = expr_null_wrapper ? IFSRC_IFBODY : IFSRC_DECL; |
8e54f139 TB |
1672 | if (ns->proc_name->attr.flavor == FL_MODULE) |
1673 | final->module = ns->proc_name->name; | |
1674 | gfc_set_sym_referenced (final); | |
29a7d776 | 1675 | gfc_commit_symbol (final); |
8e54f139 TB |
1676 | |
1677 | /* Set up formal argument. */ | |
1678 | gfc_get_symbol ("array", sub_ns, &array); | |
1679 | array->ts.type = BT_DERIVED; | |
1680 | array->ts.u.derived = derived; | |
1681 | array->attr.flavor = FL_VARIABLE; | |
1682 | array->attr.dummy = 1; | |
1683 | array->attr.contiguous = 1; | |
1684 | array->attr.dimension = 1; | |
1685 | array->attr.artificial = 1; | |
1686 | array->as = gfc_get_array_spec(); | |
1687 | array->as->type = AS_ASSUMED_RANK; | |
1688 | array->as->rank = -1; | |
1689 | array->attr.intent = INTENT_INOUT; | |
1690 | gfc_set_sym_referenced (array); | |
1691 | final->formal = gfc_get_formal_arglist (); | |
1692 | final->formal->sym = array; | |
1693 | gfc_commit_symbol (array); | |
1694 | ||
29a7d776 | 1695 | /* Set up formal argument. */ |
9e04287b TB |
1696 | gfc_get_symbol ("byte_stride", sub_ns, &byte_stride); |
1697 | byte_stride->ts.type = BT_INTEGER; | |
1698 | byte_stride->ts.kind = gfc_index_integer_kind; | |
1699 | byte_stride->attr.flavor = FL_VARIABLE; | |
1700 | byte_stride->attr.dummy = 1; | |
1701 | byte_stride->attr.value = 1; | |
1702 | byte_stride->attr.artificial = 1; | |
1703 | gfc_set_sym_referenced (byte_stride); | |
29a7d776 | 1704 | final->formal->next = gfc_get_formal_arglist (); |
9e04287b TB |
1705 | final->formal->next->sym = byte_stride; |
1706 | gfc_commit_symbol (byte_stride); | |
29a7d776 TB |
1707 | |
1708 | /* Set up formal argument. */ | |
1709 | gfc_get_symbol ("fini_coarray", sub_ns, &fini_coarray); | |
1710 | fini_coarray->ts.type = BT_LOGICAL; | |
9e04287b | 1711 | fini_coarray->ts.kind = 1; |
29a7d776 TB |
1712 | fini_coarray->attr.flavor = FL_VARIABLE; |
1713 | fini_coarray->attr.dummy = 1; | |
1714 | fini_coarray->attr.value = 1; | |
1715 | fini_coarray->attr.artificial = 1; | |
1716 | gfc_set_sym_referenced (fini_coarray); | |
1717 | final->formal->next->next = gfc_get_formal_arglist (); | |
1718 | final->formal->next->next->sym = fini_coarray; | |
1719 | gfc_commit_symbol (fini_coarray); | |
1720 | ||
1721 | /* Return with a NULL() expression but with an interface which has | |
1722 | the formal arguments. */ | |
1723 | if (expr_null_wrapper) | |
1724 | { | |
1725 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1726 | vtab_final->ts.interface = final; | |
1727 | return; | |
1728 | } | |
1729 | ||
9e04287b TB |
1730 | /* Local variables. */ |
1731 | ||
1732 | gfc_get_symbol ("idx", sub_ns, &idx); | |
1733 | idx->ts.type = BT_INTEGER; | |
1734 | idx->ts.kind = gfc_index_integer_kind; | |
1735 | idx->attr.flavor = FL_VARIABLE; | |
1736 | idx->attr.artificial = 1; | |
1737 | gfc_set_sym_referenced (idx); | |
1738 | gfc_commit_symbol (idx); | |
1739 | ||
1740 | gfc_get_symbol ("idx2", sub_ns, &idx2); | |
1741 | idx2->ts.type = BT_INTEGER; | |
1742 | idx2->ts.kind = gfc_index_integer_kind; | |
1743 | idx2->attr.flavor = FL_VARIABLE; | |
1744 | idx2->attr.artificial = 1; | |
1745 | gfc_set_sym_referenced (idx2); | |
1746 | gfc_commit_symbol (idx2); | |
1747 | ||
1748 | gfc_get_symbol ("offset", sub_ns, &offset); | |
1749 | offset->ts.type = BT_INTEGER; | |
1750 | offset->ts.kind = gfc_index_integer_kind; | |
1751 | offset->attr.flavor = FL_VARIABLE; | |
1752 | offset->attr.artificial = 1; | |
1753 | gfc_set_sym_referenced (offset); | |
1754 | gfc_commit_symbol (offset); | |
1755 | ||
1756 | /* Create RANK expression. */ | |
6838c137 TB |
1757 | rank = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_RANK, "rank", |
1758 | gfc_current_locus, 1, | |
1759 | gfc_lval_expr_from_sym (array)); | |
16023efc TB |
1760 | if (rank->ts.kind != idx->ts.kind) |
1761 | gfc_convert_type_warn (rank, &idx->ts, 2, 0); | |
9e04287b TB |
1762 | |
1763 | /* Create is_contiguous variable. */ | |
1764 | gfc_get_symbol ("is_contiguous", sub_ns, &is_contiguous); | |
1765 | is_contiguous->ts.type = BT_LOGICAL; | |
1766 | is_contiguous->ts.kind = gfc_default_logical_kind; | |
1767 | is_contiguous->attr.flavor = FL_VARIABLE; | |
1768 | is_contiguous->attr.artificial = 1; | |
1769 | gfc_set_sym_referenced (is_contiguous); | |
1770 | gfc_commit_symbol (is_contiguous); | |
1771 | ||
1772 | /* Create "sizes(0..rank)" variable, which contains the multiplied | |
1773 | up extent of the dimensions, i.e. sizes(0) = 1, sizes(1) = extent(dim=1), | |
1774 | sizes(2) = sizes(1) * extent(dim=2) etc. */ | |
1775 | gfc_get_symbol ("sizes", sub_ns, &sizes); | |
1776 | sizes->ts.type = BT_INTEGER; | |
1777 | sizes->ts.kind = gfc_index_integer_kind; | |
1778 | sizes->attr.flavor = FL_VARIABLE; | |
1779 | sizes->attr.dimension = 1; | |
1780 | sizes->attr.artificial = 1; | |
1781 | sizes->as = gfc_get_array_spec(); | |
1782 | sizes->attr.intent = INTENT_INOUT; | |
1783 | sizes->as->type = AS_EXPLICIT; | |
1784 | sizes->as->rank = 1; | |
1785 | sizes->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1786 | sizes->as->upper[0] = gfc_copy_expr (rank); | |
1787 | gfc_set_sym_referenced (sizes); | |
1788 | gfc_commit_symbol (sizes); | |
1789 | ||
1790 | /* Create "strides(1..rank)" variable, which contains the strides per | |
1791 | dimension. */ | |
1792 | gfc_get_symbol ("strides", sub_ns, &strides); | |
1793 | strides->ts.type = BT_INTEGER; | |
1794 | strides->ts.kind = gfc_index_integer_kind; | |
1795 | strides->attr.flavor = FL_VARIABLE; | |
1796 | strides->attr.dimension = 1; | |
1797 | strides->attr.artificial = 1; | |
1798 | strides->as = gfc_get_array_spec(); | |
1799 | strides->attr.intent = INTENT_INOUT; | |
1800 | strides->as->type = AS_EXPLICIT; | |
1801 | strides->as->rank = 1; | |
1802 | strides->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1803 | strides->as->upper[0] = gfc_copy_expr (rank); | |
1804 | gfc_set_sym_referenced (strides); | |
1805 | gfc_commit_symbol (strides); | |
1806 | ||
29a7d776 TB |
1807 | |
1808 | /* Set return value to 0. */ | |
11e5274a | 1809 | last_code = gfc_get_code (EXEC_ASSIGN); |
29a7d776 TB |
1810 | last_code->expr1 = gfc_lval_expr_from_sym (final); |
1811 | last_code->expr2 = gfc_get_int_expr (4, NULL, 0); | |
1812 | sub_ns->code = last_code; | |
1813 | ||
9e04287b | 1814 | /* Set: is_contiguous = .true. */ |
11e5274a | 1815 | last_code->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1816 | last_code = last_code->next; |
9e04287b TB |
1817 | last_code->expr1 = gfc_lval_expr_from_sym (is_contiguous); |
1818 | last_code->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1819 | &gfc_current_locus, true); | |
1820 | ||
1821 | /* Set: sizes(0) = 1. */ | |
11e5274a | 1822 | last_code->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1823 | last_code = last_code->next; |
9e04287b TB |
1824 | last_code->expr1 = gfc_lval_expr_from_sym (sizes); |
1825 | last_code->expr1->ref = gfc_get_ref (); | |
1826 | last_code->expr1->ref->type = REF_ARRAY; | |
1827 | last_code->expr1->ref->u.ar.type = AR_ELEMENT; | |
1828 | last_code->expr1->ref->u.ar.dimen = 1; | |
1829 | last_code->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1830 | last_code->expr1->ref->u.ar.start[0] | |
1831 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1832 | last_code->expr1->ref->u.ar.as = sizes->as; | |
1833 | last_code->expr2 = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); | |
1834 | ||
1835 | /* Create: | |
1836 | DO idx = 1, rank | |
1837 | strides(idx) = _F._stride (array, dim=idx) | |
1838 | sizes(idx) = sizes(i-1) * size(array, dim=idx, kind=index_kind) | |
524af0d6 | 1839 | if (strides (idx) /= sizes(i-1)) is_contiguous = .false. |
9e04287b TB |
1840 | END DO. */ |
1841 | ||
1842 | /* Create loop. */ | |
1843 | iter = gfc_get_iterator (); | |
1844 | iter->var = gfc_lval_expr_from_sym (idx); | |
1845 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1846 | iter->end = gfc_copy_expr (rank); | |
1847 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 1848 | last_code->next = gfc_get_code (EXEC_DO); |
9e04287b | 1849 | last_code = last_code->next; |
9e04287b | 1850 | last_code->ext.iterator = iter; |
11e5274a | 1851 | last_code->block = gfc_get_code (EXEC_DO); |
9e04287b | 1852 | |
1cc0e193 | 1853 | /* strides(idx) = _F._stride(array,dim=idx). */ |
11e5274a | 1854 | last_code->block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1855 | block = last_code->block->next; |
9e04287b TB |
1856 | |
1857 | block->expr1 = gfc_lval_expr_from_sym (strides); | |
1858 | block->expr1->ref = gfc_get_ref (); | |
1859 | block->expr1->ref->type = REF_ARRAY; | |
1860 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1861 | block->expr1->ref->u.ar.dimen = 1; | |
1862 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1863 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1864 | block->expr1->ref->u.ar.as = strides->as; | |
1865 | ||
6838c137 TB |
1866 | block->expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STRIDE, "stride", |
1867 | gfc_current_locus, 2, | |
1868 | gfc_lval_expr_from_sym (array), | |
1869 | gfc_lval_expr_from_sym (idx)); | |
9e04287b | 1870 | |
1cc0e193 | 1871 | /* sizes(idx) = sizes(idx-1) * size(array,dim=idx, kind=index_kind). */ |
11e5274a | 1872 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1873 | block = block->next; |
9e04287b | 1874 | |
1cc0e193 | 1875 | /* sizes(idx) = ... */ |
9e04287b TB |
1876 | block->expr1 = gfc_lval_expr_from_sym (sizes); |
1877 | block->expr1->ref = gfc_get_ref (); | |
1878 | block->expr1->ref->type = REF_ARRAY; | |
1879 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1880 | block->expr1->ref->u.ar.dimen = 1; | |
1881 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1882 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1883 | block->expr1->ref->u.ar.as = sizes->as; | |
1884 | ||
1885 | block->expr2 = gfc_get_expr (); | |
1886 | block->expr2->expr_type = EXPR_OP; | |
1887 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1011502b | 1888 | block->expr2->where = gfc_current_locus; |
9e04287b | 1889 | |
1cc0e193 | 1890 | /* sizes(idx-1). */ |
9e04287b TB |
1891 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1892 | block->expr2->value.op.op1->ref = gfc_get_ref (); | |
1893 | block->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1894 | block->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
1895 | block->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1896 | block->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1897 | block->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1898 | block->expr2->value.op.op1->ref->u.ar.start[0] = gfc_get_expr (); | |
1899 | block->expr2->value.op.op1->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1011502b | 1900 | block->expr2->value.op.op1->ref->u.ar.start[0]->where = gfc_current_locus; |
9e04287b TB |
1901 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; |
1902 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1 | |
1903 | = gfc_lval_expr_from_sym (idx); | |
1904 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op2 | |
1905 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1906 | block->expr2->value.op.op1->ref->u.ar.start[0]->ts | |
1907 | = block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1->ts; | |
1908 | ||
1909 | /* size(array, dim=idx, kind=index_kind). */ | |
6838c137 TB |
1910 | block->expr2->value.op.op2 |
1911 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1912 | gfc_current_locus, 3, | |
1913 | gfc_lval_expr_from_sym (array), | |
1914 | gfc_lval_expr_from_sym (idx), | |
1915 | gfc_get_int_expr (gfc_index_integer_kind, | |
cbde6c0f TB |
1916 | NULL, |
1917 | gfc_index_integer_kind)); | |
1918 | block->expr2->value.op.op2->ts.kind = gfc_index_integer_kind; | |
9e04287b TB |
1919 | block->expr2->ts = idx->ts; |
1920 | ||
524af0d6 | 1921 | /* if (strides (idx) /= sizes(idx-1)) is_contiguous = .false. */ |
11e5274a | 1922 | block->next = gfc_get_code (EXEC_IF); |
9e04287b | 1923 | block = block->next; |
9e04287b | 1924 | |
11e5274a | 1925 | block->block = gfc_get_code (EXEC_IF); |
9e04287b | 1926 | block = block->block; |
9e04287b TB |
1927 | |
1928 | /* if condition: strides(idx) /= sizes(idx-1). */ | |
1929 | block->expr1 = gfc_get_expr (); | |
1930 | block->expr1->ts.type = BT_LOGICAL; | |
1931 | block->expr1->ts.kind = gfc_default_logical_kind; | |
1932 | block->expr1->expr_type = EXPR_OP; | |
1933 | block->expr1->where = gfc_current_locus; | |
1934 | block->expr1->value.op.op = INTRINSIC_NE; | |
1935 | ||
1936 | block->expr1->value.op.op1 = gfc_lval_expr_from_sym (strides); | |
1937 | block->expr1->value.op.op1->ref = gfc_get_ref (); | |
1938 | block->expr1->value.op.op1->ref->type = REF_ARRAY; | |
1939 | block->expr1->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1940 | block->expr1->value.op.op1->ref->u.ar.dimen = 1; | |
1941 | block->expr1->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1942 | block->expr1->value.op.op1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1943 | block->expr1->value.op.op1->ref->u.ar.as = strides->as; | |
1944 | ||
1945 | block->expr1->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1946 | block->expr1->value.op.op2->ref = gfc_get_ref (); | |
1947 | block->expr1->value.op.op2->ref->type = REF_ARRAY; | |
1948 | block->expr1->value.op.op2->ref->u.ar.as = sizes->as; | |
1949 | block->expr1->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1950 | block->expr1->value.op.op2->ref->u.ar.dimen = 1; | |
1951 | block->expr1->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1952 | block->expr1->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1953 | block->expr1->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1011502b | 1954 | block->expr1->value.op.op2->ref->u.ar.start[0]->where = gfc_current_locus; |
9e04287b TB |
1955 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; |
1956 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1957 | = gfc_lval_expr_from_sym (idx); | |
1958 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1959 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1960 | block->expr1->value.op.op2->ref->u.ar.start[0]->ts | |
1961 | = block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1962 | ||
1963 | /* if body: is_contiguous = .false. */ | |
11e5274a | 1964 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1965 | block = block->next; |
9e04287b TB |
1966 | block->expr1 = gfc_lval_expr_from_sym (is_contiguous); |
1967 | block->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1968 | &gfc_current_locus, false); | |
1969 | ||
8e54f139 TB |
1970 | /* Obtain the size (number of elements) of "array" MINUS ONE, |
1971 | which is used in the scalarization. */ | |
1972 | gfc_get_symbol ("nelem", sub_ns, &nelem); | |
1973 | nelem->ts.type = BT_INTEGER; | |
1974 | nelem->ts.kind = gfc_index_integer_kind; | |
1975 | nelem->attr.flavor = FL_VARIABLE; | |
1976 | nelem->attr.artificial = 1; | |
1977 | gfc_set_sym_referenced (nelem); | |
1978 | gfc_commit_symbol (nelem); | |
1979 | ||
9e04287b | 1980 | /* nelem = sizes (rank) - 1. */ |
11e5274a | 1981 | last_code->next = gfc_get_code (EXEC_ASSIGN); |
29a7d776 | 1982 | last_code = last_code->next; |
8e54f139 TB |
1983 | |
1984 | last_code->expr1 = gfc_lval_expr_from_sym (nelem); | |
1985 | ||
1986 | last_code->expr2 = gfc_get_expr (); | |
1987 | last_code->expr2->expr_type = EXPR_OP; | |
1988 | last_code->expr2->value.op.op = INTRINSIC_MINUS; | |
1989 | last_code->expr2->value.op.op2 | |
1990 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1991 | last_code->expr2->ts = last_code->expr2->value.op.op2->ts; | |
1011502b | 1992 | last_code->expr2->where = gfc_current_locus; |
8e54f139 | 1993 | |
9e04287b TB |
1994 | last_code->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1995 | last_code->expr2->value.op.op1->ref = gfc_get_ref (); | |
1996 | last_code->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1997 | last_code->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1998 | last_code->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1999 | last_code->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
2000 | last_code->expr2->value.op.op1->ref->u.ar.start[0] = gfc_copy_expr (rank); | |
2001 | last_code->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
8e54f139 TB |
2002 | |
2003 | /* Call final subroutines. We now generate code like: | |
2004 | use iso_c_binding | |
2005 | integer, pointer :: ptr | |
2006 | type(c_ptr) :: cptr | |
2007 | integer(c_intptr_t) :: i, addr | |
2008 | ||
2009 | select case (rank (array)) | |
2010 | case (3) | |
29a7d776 | 2011 | ! If needed, the array is packed |
8e54f139 TB |
2012 | call final_rank3 (array) |
2013 | case default: | |
2014 | do i = 0, size (array)-1 | |
29a7d776 | 2015 | addr = transfer (c_loc (array), addr) + i * stride |
8e54f139 TB |
2016 | call c_f_pointer (transfer (addr, cptr), ptr) |
2017 | call elemental_final (ptr) | |
2018 | end do | |
2019 | end select */ | |
2020 | ||
2021 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2022 | { | |
2023 | gfc_finalizer *fini, *fini_elem = NULL; | |
29a7d776 | 2024 | |
807b50a7 | 2025 | gfc_get_symbol ("ptr1", sub_ns, &ptr); |
29a7d776 TB |
2026 | ptr->ts.type = BT_DERIVED; |
2027 | ptr->ts.u.derived = derived; | |
2028 | ptr->attr.flavor = FL_VARIABLE; | |
2029 | ptr->attr.pointer = 1; | |
2030 | ptr->attr.artificial = 1; | |
2031 | gfc_set_sym_referenced (ptr); | |
2032 | gfc_commit_symbol (ptr); | |
2033 | ||
8e54f139 | 2034 | /* SELECT CASE (RANK (array)). */ |
11e5274a | 2035 | last_code->next = gfc_get_code (EXEC_SELECT); |
8e54f139 | 2036 | last_code = last_code->next; |
9e04287b TB |
2037 | last_code->expr1 = gfc_copy_expr (rank); |
2038 | block = NULL; | |
8e54f139 TB |
2039 | |
2040 | for (fini = derived->f2k_derived->finalizers; fini; fini = fini->next) | |
2041 | { | |
a6cd299b | 2042 | gcc_assert (fini->proc_tree); /* Should have been set in gfc_resolve_finalizers. */ |
8e54f139 TB |
2043 | if (fini->proc_tree->n.sym->attr.elemental) |
2044 | { | |
2045 | fini_elem = fini; | |
2046 | continue; | |
2047 | } | |
2048 | ||
2049 | /* CASE (fini_rank). */ | |
2050 | if (block) | |
2051 | { | |
11e5274a | 2052 | block->block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2053 | block = block->block; |
2054 | } | |
2055 | else | |
2056 | { | |
11e5274a | 2057 | block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2058 | last_code->block = block; |
2059 | } | |
8e54f139 TB |
2060 | block->ext.block.case_list = gfc_get_case (); |
2061 | block->ext.block.case_list->where = gfc_current_locus; | |
2062 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
2063 | block->ext.block.case_list->low | |
2064 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, | |
2065 | fini->proc_tree->n.sym->formal->sym->as->rank); | |
2066 | else | |
2067 | block->ext.block.case_list->low | |
2068 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); | |
2069 | block->ext.block.case_list->high | |
cbde6c0f | 2070 | = gfc_copy_expr (block->ext.block.case_list->low); |
8e54f139 | 2071 | |
29a7d776 TB |
2072 | /* CALL fini_rank (array) - possibly with packing. */ |
2073 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
9e04287b | 2074 | finalizer_insert_packed_call (block, fini, array, byte_stride, |
6838c137 | 2075 | idx, ptr, nelem, strides, |
9e04287b TB |
2076 | sizes, idx2, offset, is_contiguous, |
2077 | rank, sub_ns); | |
29a7d776 TB |
2078 | else |
2079 | { | |
11e5274a | 2080 | block->next = gfc_get_code (EXEC_CALL); |
29a7d776 TB |
2081 | block->next->symtree = fini->proc_tree; |
2082 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
2083 | block->next->ext.actual = gfc_get_actual_arglist (); | |
2084 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
2085 | } | |
8e54f139 TB |
2086 | } |
2087 | ||
2088 | /* Elemental call - scalarized. */ | |
2089 | if (fini_elem) | |
2090 | { | |
8e54f139 TB |
2091 | /* CASE DEFAULT. */ |
2092 | if (block) | |
2093 | { | |
11e5274a | 2094 | block->block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2095 | block = block->block; |
2096 | } | |
2097 | else | |
2098 | { | |
11e5274a | 2099 | block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2100 | last_code->block = block; |
2101 | } | |
8e54f139 TB |
2102 | block->ext.block.case_list = gfc_get_case (); |
2103 | ||
8e54f139 TB |
2104 | /* Create loop. */ |
2105 | iter = gfc_get_iterator (); | |
2106 | iter->var = gfc_lval_expr_from_sym (idx); | |
2107 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2108 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2109 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 2110 | block->next = gfc_get_code (EXEC_DO); |
8e54f139 | 2111 | block = block->next; |
8e54f139 | 2112 | block->ext.iterator = iter; |
11e5274a | 2113 | block->block = gfc_get_code (EXEC_DO); |
8e54f139 | 2114 | |
9e04287b TB |
2115 | /* Offset calculation. */ |
2116 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2117 | byte_stride, rank, block->block, | |
2118 | sub_ns); | |
2119 | ||
8e54f139 TB |
2120 | /* Create code for |
2121 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
2122 | + offset, c_ptr), ptr). */ |
2123 | block->next | |
2124 | = finalization_scalarizer (array, ptr, | |
2125 | gfc_lval_expr_from_sym (offset), | |
2126 | sub_ns); | |
2127 | block = block->next; | |
8e54f139 TB |
2128 | |
2129 | /* CALL final_elemental (array). */ | |
11e5274a | 2130 | block->next = gfc_get_code (EXEC_CALL); |
8e54f139 | 2131 | block = block->next; |
8e54f139 TB |
2132 | block->symtree = fini_elem->proc_tree; |
2133 | block->resolved_sym = fini_elem->proc_sym; | |
2134 | block->ext.actual = gfc_get_actual_arglist (); | |
2135 | block->ext.actual->expr = gfc_lval_expr_from_sym (ptr); | |
2136 | } | |
2137 | } | |
2138 | ||
2139 | /* Finalize and deallocate allocatable components. The same manual | |
2140 | scalarization is used as above. */ | |
2141 | ||
2142 | if (finalizable_comp) | |
2143 | { | |
2144 | gfc_symbol *stat; | |
2145 | gfc_code *block = NULL; | |
8e54f139 TB |
2146 | |
2147 | if (!ptr) | |
2148 | { | |
807b50a7 | 2149 | gfc_get_symbol ("ptr2", sub_ns, &ptr); |
8e54f139 TB |
2150 | ptr->ts.type = BT_DERIVED; |
2151 | ptr->ts.u.derived = derived; | |
2152 | ptr->attr.flavor = FL_VARIABLE; | |
2153 | ptr->attr.pointer = 1; | |
2154 | ptr->attr.artificial = 1; | |
2155 | gfc_set_sym_referenced (ptr); | |
2156 | gfc_commit_symbol (ptr); | |
2157 | } | |
2158 | ||
2159 | gfc_get_symbol ("ignore", sub_ns, &stat); | |
2160 | stat->attr.flavor = FL_VARIABLE; | |
2161 | stat->attr.artificial = 1; | |
2162 | stat->ts.type = BT_INTEGER; | |
2163 | stat->ts.kind = gfc_default_integer_kind; | |
2164 | gfc_set_sym_referenced (stat); | |
2165 | gfc_commit_symbol (stat); | |
2166 | ||
2167 | /* Create loop. */ | |
2168 | iter = gfc_get_iterator (); | |
2169 | iter->var = gfc_lval_expr_from_sym (idx); | |
2170 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2171 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2172 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 2173 | last_code->next = gfc_get_code (EXEC_DO); |
8e54f139 | 2174 | last_code = last_code->next; |
8e54f139 | 2175 | last_code->ext.iterator = iter; |
11e5274a | 2176 | last_code->block = gfc_get_code (EXEC_DO); |
8e54f139 | 2177 | |
9e04287b TB |
2178 | /* Offset calculation. */ |
2179 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2180 | byte_stride, rank, last_code->block, | |
2181 | sub_ns); | |
2182 | ||
8e54f139 TB |
2183 | /* Create code for |
2184 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
29a7d776 | 2185 | + idx * stride, c_ptr), ptr). */ |
9e04287b TB |
2186 | block->next = finalization_scalarizer (array, ptr, |
2187 | gfc_lval_expr_from_sym(offset), | |
2188 | sub_ns); | |
2189 | block = block->next; | |
8e54f139 TB |
2190 | |
2191 | for (comp = derived->components; comp; comp = comp->next) | |
2192 | { | |
2193 | if (comp == derived->components && derived->attr.extension | |
2194 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2195 | continue; | |
2196 | ||
2197 | finalize_component (gfc_lval_expr_from_sym (ptr), derived, comp, | |
807b50a7 | 2198 | stat, fini_coarray, &block, sub_ns); |
8e54f139 TB |
2199 | if (!last_code->block->next) |
2200 | last_code->block->next = block; | |
2201 | } | |
2202 | ||
2203 | } | |
2204 | ||
2205 | /* Call the finalizer of the ancestor. */ | |
2206 | if (ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2207 | { | |
11e5274a | 2208 | last_code->next = gfc_get_code (EXEC_CALL); |
8e54f139 | 2209 | last_code = last_code->next; |
8e54f139 TB |
2210 | last_code->symtree = ancestor_wrapper->symtree; |
2211 | last_code->resolved_sym = ancestor_wrapper->symtree->n.sym; | |
2212 | ||
2213 | last_code->ext.actual = gfc_get_actual_arglist (); | |
2214 | last_code->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
29a7d776 | 2215 | last_code->ext.actual->next = gfc_get_actual_arglist (); |
9e04287b | 2216 | last_code->ext.actual->next->expr = gfc_lval_expr_from_sym (byte_stride); |
29a7d776 TB |
2217 | last_code->ext.actual->next->next = gfc_get_actual_arglist (); |
2218 | last_code->ext.actual->next->next->expr | |
2219 | = gfc_lval_expr_from_sym (fini_coarray); | |
8e54f139 TB |
2220 | } |
2221 | ||
9e04287b | 2222 | gfc_free_expr (rank); |
8e54f139 TB |
2223 | vtab_final->initializer = gfc_lval_expr_from_sym (final); |
2224 | vtab_final->ts.interface = final; | |
2004617a | 2225 | free (name); |
8e54f139 TB |
2226 | } |
2227 | ||
2228 | ||
88ce8031 | 2229 | /* Add procedure pointers for all type-bound procedures to a vtab. */ |
d15bac21 JW |
2230 | |
2231 | static void | |
88ce8031 | 2232 | add_procs_to_declared_vtab (gfc_symbol *derived, gfc_symbol *vtype) |
d15bac21 | 2233 | { |
d15bac21 JW |
2234 | gfc_symbol* super_type; |
2235 | ||
88ce8031 | 2236 | super_type = gfc_get_derived_super_type (derived); |
d15bac21 | 2237 | |
88ce8031 | 2238 | if (super_type && (super_type != derived)) |
d15bac21 | 2239 | { |
88ce8031 JW |
2240 | /* Make sure that the PPCs appear in the same order as in the parent. */ |
2241 | copy_vtab_proc_comps (super_type, vtype); | |
1d0134b3 | 2242 | /* Only needed to get the PPC initializers right. */ |
88ce8031 JW |
2243 | add_procs_to_declared_vtab (super_type, vtype); |
2244 | } | |
d15bac21 | 2245 | |
88ce8031 JW |
2246 | if (derived->f2k_derived && derived->f2k_derived->tb_sym_root) |
2247 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_sym_root, vtype); | |
d15bac21 | 2248 | |
88ce8031 JW |
2249 | if (derived->f2k_derived && derived->f2k_derived->tb_uop_root) |
2250 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_uop_root, vtype); | |
d15bac21 JW |
2251 | } |
2252 | ||
2253 | ||
29a7d776 | 2254 | /* Find or generate the symbol for a derived type's vtab. */ |
d15bac21 JW |
2255 | |
2256 | gfc_symbol * | |
88ce8031 | 2257 | gfc_find_derived_vtab (gfc_symbol *derived) |
d15bac21 JW |
2258 | { |
2259 | gfc_namespace *ns; | |
50f30801 | 2260 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL, *def_init = NULL; |
611c64f0 | 2261 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
dfd6231e | 2262 | gfc_gsymbol *gsym = NULL; |
bf9f15ee | 2263 | gfc_symbol *dealloc = NULL, *arg = NULL; |
c49ea23d | 2264 | |
2fcd5884 PT |
2265 | if (derived->attr.pdt_template) |
2266 | return NULL; | |
2267 | ||
8b704316 | 2268 | /* Find the top-level namespace. */ |
e10f52d0 | 2269 | for (ns = gfc_current_ns; ns; ns = ns->parent) |
d15bac21 JW |
2270 | if (!ns->parent) |
2271 | break; | |
2272 | ||
e10f52d0 | 2273 | /* If the type is a class container, use the underlying derived type. */ |
8b704316 | 2274 | if (!derived->attr.unlimited_polymorphic && derived->attr.is_class) |
e10f52d0 | 2275 | derived = gfc_get_derived_super_type (derived); |
8b704316 | 2276 | |
7c929c9c TB |
2277 | if (!derived) |
2278 | return NULL; | |
2279 | ||
dfd6231e PT |
2280 | /* Find the gsymbol for the module of use associated derived types. */ |
2281 | if ((derived->attr.use_assoc || derived->attr.used_in_submodule) | |
2282 | && !derived->attr.vtype && !derived->attr.is_class) | |
2283 | gsym = gfc_find_gsymbol (gfc_gsym_root, derived->module); | |
2284 | else | |
2285 | gsym = NULL; | |
2286 | ||
2287 | /* Work in the gsymbol namespace if the top-level namespace is a module. | |
2288 | This ensures that the vtable is unique, which is required since we use | |
2289 | its address in SELECT TYPE. */ | |
2290 | if (gsym && gsym->ns && ns && ns->proc_name | |
2291 | && ns->proc_name->attr.flavor == FL_MODULE) | |
2292 | ns = gsym->ns; | |
2293 | ||
d15bac21 JW |
2294 | if (ns) |
2295 | { | |
2004617a QZ |
2296 | char tname[GFC_MAX_SYMBOL_LEN+1]; |
2297 | char *name; | |
29a7d776 | 2298 | |
4fa02692 | 2299 | get_unique_hashed_string (tname, derived); |
2004617a | 2300 | name = xasprintf ("__vtab_%s", tname); |
611c64f0 JW |
2301 | |
2302 | /* Look for the vtab symbol in various namespaces. */ | |
dfd6231e PT |
2303 | if (gsym && gsym->ns) |
2304 | { | |
2305 | gfc_find_symbol (name, gsym->ns, 0, &vtab); | |
2306 | if (vtab) | |
2307 | ns = gsym->ns; | |
2308 | } | |
2309 | if (vtab == NULL) | |
2310 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
611c64f0 JW |
2311 | if (vtab == NULL) |
2312 | gfc_find_symbol (name, ns, 0, &vtab); | |
2313 | if (vtab == NULL) | |
2314 | gfc_find_symbol (name, derived->ns, 0, &vtab); | |
d15bac21 JW |
2315 | |
2316 | if (vtab == NULL) | |
2317 | { | |
2318 | gfc_get_symbol (name, ns, &vtab); | |
2319 | vtab->ts.type = BT_DERIVED; | |
cddf0123 | 2320 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
524af0d6 | 2321 | &gfc_current_locus)) |
e10f52d0 | 2322 | goto cleanup; |
d15bac21 | 2323 | vtab->attr.target = 1; |
95f5c775 | 2324 | vtab->attr.save = SAVE_IMPLICIT; |
d15bac21 | 2325 | vtab->attr.vtab = 1; |
f3f98a1e | 2326 | vtab->attr.access = ACCESS_PUBLIC; |
d15bac21 | 2327 | gfc_set_sym_referenced (vtab); |
2004617a | 2328 | name = xasprintf ("__vtype_%s", tname); |
29a7d776 | 2329 | |
d15bac21 JW |
2330 | gfc_find_symbol (name, ns, 0, &vtype); |
2331 | if (vtype == NULL) | |
2332 | { | |
2333 | gfc_component *c; | |
2334 | gfc_symbol *parent = NULL, *parent_vtab = NULL; | |
bf9f15ee PT |
2335 | bool rdt = false; |
2336 | ||
2337 | /* Is this a derived type with recursive allocatable | |
2338 | components? */ | |
2339 | c = (derived->attr.unlimited_polymorphic | |
2340 | || derived->attr.abstract) ? | |
2341 | NULL : derived->components; | |
2342 | for (; c; c= c->next) | |
2343 | if (c->ts.type == BT_DERIVED | |
2344 | && c->ts.u.derived == derived) | |
2345 | { | |
2346 | rdt = true; | |
2347 | break; | |
2348 | } | |
d15bac21 JW |
2349 | |
2350 | gfc_get_symbol (name, ns, &vtype); | |
cddf0123 | 2351 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
524af0d6 | 2352 | &gfc_current_locus)) |
81fb8a48 | 2353 | goto cleanup; |
f3f98a1e | 2354 | vtype->attr.access = ACCESS_PUBLIC; |
611c64f0 | 2355 | vtype->attr.vtype = 1; |
d15bac21 JW |
2356 | gfc_set_sym_referenced (vtype); |
2357 | ||
b04533af | 2358 | /* Add component '_hash'. */ |
524af0d6 | 2359 | if (!gfc_add_component (vtype, "_hash", &c)) |
81fb8a48 | 2360 | goto cleanup; |
d15bac21 JW |
2361 | c->ts.type = BT_INTEGER; |
2362 | c->ts.kind = 4; | |
2363 | c->attr.access = ACCESS_PRIVATE; | |
2364 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2365 | NULL, derived->hash_value); | |
2366 | ||
b04533af | 2367 | /* Add component '_size'. */ |
524af0d6 | 2368 | if (!gfc_add_component (vtype, "_size", &c)) |
81fb8a48 | 2369 | goto cleanup; |
d15bac21 | 2370 | c->ts.type = BT_INTEGER; |
f622221a | 2371 | c->ts.kind = gfc_size_kind; |
d15bac21 JW |
2372 | c->attr.access = ACCESS_PRIVATE; |
2373 | /* Remember the derived type in ts.u.derived, | |
2374 | so that the correct initializer can be set later on | |
2375 | (in gfc_conv_structure). */ | |
2376 | c->ts.u.derived = derived; | |
f622221a | 2377 | c->initializer = gfc_get_int_expr (gfc_size_kind, |
d15bac21 JW |
2378 | NULL, 0); |
2379 | ||
b04533af | 2380 | /* Add component _extends. */ |
524af0d6 | 2381 | if (!gfc_add_component (vtype, "_extends", &c)) |
81fb8a48 | 2382 | goto cleanup; |
d15bac21 JW |
2383 | c->attr.pointer = 1; |
2384 | c->attr.access = ACCESS_PRIVATE; | |
8b704316 PT |
2385 | if (!derived->attr.unlimited_polymorphic) |
2386 | parent = gfc_get_derived_super_type (derived); | |
2387 | else | |
2388 | parent = NULL; | |
2389 | ||
d15bac21 JW |
2390 | if (parent) |
2391 | { | |
88ce8031 | 2392 | parent_vtab = gfc_find_derived_vtab (parent); |
d15bac21 JW |
2393 | c->ts.type = BT_DERIVED; |
2394 | c->ts.u.derived = parent_vtab->ts.u.derived; | |
2395 | c->initializer = gfc_get_expr (); | |
2396 | c->initializer->expr_type = EXPR_VARIABLE; | |
2397 | gfc_find_sym_tree (parent_vtab->name, parent_vtab->ns, | |
2398 | 0, &c->initializer->symtree); | |
2399 | } | |
2400 | else | |
2401 | { | |
2402 | c->ts.type = BT_DERIVED; | |
2403 | c->ts.u.derived = vtype; | |
2404 | c->initializer = gfc_get_null_expr (NULL); | |
2405 | } | |
2406 | ||
8b704316 PT |
2407 | if (!derived->attr.unlimited_polymorphic |
2408 | && derived->components == NULL | |
2409 | && !derived->attr.zero_comp) | |
611c64f0 JW |
2410 | { |
2411 | /* At this point an error must have occurred. | |
2412 | Prevent further errors on the vtype components. */ | |
2413 | found_sym = vtab; | |
2414 | goto have_vtype; | |
2415 | } | |
2416 | ||
b04533af | 2417 | /* Add component _def_init. */ |
524af0d6 | 2418 | if (!gfc_add_component (vtype, "_def_init", &c)) |
50f30801 JW |
2419 | goto cleanup; |
2420 | c->attr.pointer = 1; | |
8e54f139 | 2421 | c->attr.artificial = 1; |
50f30801 JW |
2422 | c->attr.access = ACCESS_PRIVATE; |
2423 | c->ts.type = BT_DERIVED; | |
2424 | c->ts.u.derived = derived; | |
8b704316 PT |
2425 | if (derived->attr.unlimited_polymorphic |
2426 | || derived->attr.abstract) | |
611c64f0 | 2427 | c->initializer = gfc_get_null_expr (NULL); |
50f30801 JW |
2428 | else |
2429 | { | |
2430 | /* Construct default initialization variable. */ | |
2004617a | 2431 | name = xasprintf ("__def_init_%s", tname); |
50f30801 JW |
2432 | gfc_get_symbol (name, ns, &def_init); |
2433 | def_init->attr.target = 1; | |
8e54f139 | 2434 | def_init->attr.artificial = 1; |
95f5c775 | 2435 | def_init->attr.save = SAVE_IMPLICIT; |
50f30801 | 2436 | def_init->attr.access = ACCESS_PUBLIC; |
22c30bc0 | 2437 | def_init->attr.flavor = FL_VARIABLE; |
50f30801 JW |
2438 | gfc_set_sym_referenced (def_init); |
2439 | def_init->ts.type = BT_DERIVED; | |
2440 | def_init->ts.u.derived = derived; | |
2441 | def_init->value = gfc_default_initializer (&def_init->ts); | |
2442 | ||
2443 | c->initializer = gfc_lval_expr_from_sym (def_init); | |
2444 | } | |
2445 | ||
b04533af | 2446 | /* Add component _copy. */ |
524af0d6 | 2447 | if (!gfc_add_component (vtype, "_copy", &c)) |
611c64f0 JW |
2448 | goto cleanup; |
2449 | c->attr.proc_pointer = 1; | |
2450 | c->attr.access = ACCESS_PRIVATE; | |
2451 | c->tb = XCNEW (gfc_typebound_proc); | |
2452 | c->tb->ppc = 1; | |
8b704316 PT |
2453 | if (derived->attr.unlimited_polymorphic |
2454 | || derived->attr.abstract) | |
611c64f0 JW |
2455 | c->initializer = gfc_get_null_expr (NULL); |
2456 | else | |
2457 | { | |
2458 | /* Set up namespace. */ | |
2459 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2460 | sub_ns->sibling = ns->contained; | |
2461 | ns->contained = sub_ns; | |
2462 | sub_ns->resolved = 1; | |
2463 | /* Set up procedure symbol. */ | |
2004617a | 2464 | name = xasprintf ("__copy_%s", tname); |
611c64f0 JW |
2465 | gfc_get_symbol (name, sub_ns, ©); |
2466 | sub_ns->proc_name = copy; | |
2467 | copy->attr.flavor = FL_PROCEDURE; | |
cf651ca2 | 2468 | copy->attr.subroutine = 1; |
0b73eb81 | 2469 | copy->attr.pure = 1; |
8e54f139 | 2470 | copy->attr.artificial = 1; |
611c64f0 | 2471 | copy->attr.if_source = IFSRC_DECL; |
c49ea23d PT |
2472 | /* This is elemental so that arrays are automatically |
2473 | treated correctly by the scalarizer. */ | |
2474 | copy->attr.elemental = 1; | |
844ba455 JW |
2475 | if (ns->proc_name->attr.flavor == FL_MODULE) |
2476 | copy->module = ns->proc_name->name; | |
611c64f0 JW |
2477 | gfc_set_sym_referenced (copy); |
2478 | /* Set up formal arguments. */ | |
2479 | gfc_get_symbol ("src", sub_ns, &src); | |
2480 | src->ts.type = BT_DERIVED; | |
2481 | src->ts.u.derived = derived; | |
2482 | src->attr.flavor = FL_VARIABLE; | |
2483 | src->attr.dummy = 1; | |
8e54f139 TB |
2484 | src->attr.artificial = 1; |
2485 | src->attr.intent = INTENT_IN; | |
611c64f0 JW |
2486 | gfc_set_sym_referenced (src); |
2487 | copy->formal = gfc_get_formal_arglist (); | |
2488 | copy->formal->sym = src; | |
2489 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2490 | dst->ts.type = BT_DERIVED; | |
2491 | dst->ts.u.derived = derived; | |
2492 | dst->attr.flavor = FL_VARIABLE; | |
2493 | dst->attr.dummy = 1; | |
8e54f139 | 2494 | dst->attr.artificial = 1; |
16023efc | 2495 | dst->attr.intent = INTENT_INOUT; |
611c64f0 JW |
2496 | gfc_set_sym_referenced (dst); |
2497 | copy->formal->next = gfc_get_formal_arglist (); | |
2498 | copy->formal->next->sym = dst; | |
2499 | /* Set up code. */ | |
11e5274a | 2500 | sub_ns->code = gfc_get_code (EXEC_INIT_ASSIGN); |
611c64f0 JW |
2501 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2502 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2503 | /* Set initializer. */ | |
2504 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2505 | c->ts.interface = copy; | |
2506 | } | |
2507 | ||
8e54f139 TB |
2508 | /* Add component _final, which contains a procedure pointer to |
2509 | a wrapper which handles both the freeing of allocatable | |
2510 | components and the calls to finalization subroutines. | |
2511 | Note: The actual wrapper function can only be generated | |
2512 | at resolution time. */ | |
524af0d6 | 2513 | if (!gfc_add_component (vtype, "_final", &c)) |
8e54f139 TB |
2514 | goto cleanup; |
2515 | c->attr.proc_pointer = 1; | |
2516 | c->attr.access = ACCESS_PRIVATE; | |
f8add009 | 2517 | c->attr.artificial = 1; |
8e54f139 TB |
2518 | c->tb = XCNEW (gfc_typebound_proc); |
2519 | c->tb->ppc = 1; | |
2520 | generate_finalization_wrapper (derived, ns, tname, c); | |
2521 | ||
bf9f15ee PT |
2522 | /* Add component _deallocate. */ |
2523 | if (!gfc_add_component (vtype, "_deallocate", &c)) | |
2524 | goto cleanup; | |
2525 | c->attr.proc_pointer = 1; | |
2526 | c->attr.access = ACCESS_PRIVATE; | |
2527 | c->tb = XCNEW (gfc_typebound_proc); | |
2528 | c->tb->ppc = 1; | |
2529 | if (derived->attr.unlimited_polymorphic | |
2530 | || derived->attr.abstract | |
2531 | || !rdt) | |
2532 | c->initializer = gfc_get_null_expr (NULL); | |
2533 | else | |
2534 | { | |
2535 | /* Set up namespace. */ | |
2536 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2537 | ||
2538 | sub_ns->sibling = ns->contained; | |
2539 | ns->contained = sub_ns; | |
2540 | sub_ns->resolved = 1; | |
2541 | /* Set up procedure symbol. */ | |
2004617a | 2542 | name = xasprintf ("__deallocate_%s", tname); |
bf9f15ee PT |
2543 | gfc_get_symbol (name, sub_ns, &dealloc); |
2544 | sub_ns->proc_name = dealloc; | |
2545 | dealloc->attr.flavor = FL_PROCEDURE; | |
2546 | dealloc->attr.subroutine = 1; | |
2547 | dealloc->attr.pure = 1; | |
2548 | dealloc->attr.artificial = 1; | |
2549 | dealloc->attr.if_source = IFSRC_DECL; | |
2550 | ||
2551 | if (ns->proc_name->attr.flavor == FL_MODULE) | |
2552 | dealloc->module = ns->proc_name->name; | |
2553 | gfc_set_sym_referenced (dealloc); | |
2554 | /* Set up formal argument. */ | |
2555 | gfc_get_symbol ("arg", sub_ns, &arg); | |
2556 | arg->ts.type = BT_DERIVED; | |
2557 | arg->ts.u.derived = derived; | |
2558 | arg->attr.flavor = FL_VARIABLE; | |
2559 | arg->attr.dummy = 1; | |
2560 | arg->attr.artificial = 1; | |
2561 | arg->attr.intent = INTENT_INOUT; | |
2562 | arg->attr.dimension = 1; | |
2563 | arg->attr.allocatable = 1; | |
2564 | arg->as = gfc_get_array_spec(); | |
2565 | arg->as->type = AS_ASSUMED_SHAPE; | |
2566 | arg->as->rank = 1; | |
2567 | arg->as->lower[0] = gfc_get_int_expr (gfc_default_integer_kind, | |
2568 | NULL, 1); | |
2569 | gfc_set_sym_referenced (arg); | |
2570 | dealloc->formal = gfc_get_formal_arglist (); | |
2571 | dealloc->formal->sym = arg; | |
2572 | /* Set up code. */ | |
2573 | sub_ns->code = gfc_get_code (EXEC_DEALLOCATE); | |
2574 | sub_ns->code->ext.alloc.list = gfc_get_alloc (); | |
2575 | sub_ns->code->ext.alloc.list->expr | |
2576 | = gfc_lval_expr_from_sym (arg); | |
2577 | /* Set initializer. */ | |
2578 | c->initializer = gfc_lval_expr_from_sym (dealloc); | |
2579 | c->ts.interface = dealloc; | |
2580 | } | |
2581 | ||
50f30801 | 2582 | /* Add procedure pointers for type-bound procedures. */ |
8b704316 PT |
2583 | if (!derived->attr.unlimited_polymorphic) |
2584 | add_procs_to_declared_vtab (derived, vtype); | |
d6cd8711 | 2585 | } |
d15bac21 | 2586 | |
611c64f0 | 2587 | have_vtype: |
d15bac21 JW |
2588 | vtab->ts.u.derived = vtype; |
2589 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2590 | } | |
2004617a | 2591 | free (name); |
d15bac21 JW |
2592 | } |
2593 | ||
81fb8a48 MM |
2594 | found_sym = vtab; |
2595 | ||
2596 | cleanup: | |
2597 | /* It is unexpected to have some symbols added at resolution or code | |
2598 | generation time. We commit the changes in order to keep a clean state. */ | |
2599 | if (found_sym) | |
e10f52d0 JW |
2600 | { |
2601 | gfc_commit_symbol (vtab); | |
2602 | if (vtype) | |
2603 | gfc_commit_symbol (vtype); | |
50f30801 JW |
2604 | if (def_init) |
2605 | gfc_commit_symbol (def_init); | |
611c64f0 JW |
2606 | if (copy) |
2607 | gfc_commit_symbol (copy); | |
2608 | if (src) | |
2609 | gfc_commit_symbol (src); | |
2610 | if (dst) | |
2611 | gfc_commit_symbol (dst); | |
bf9f15ee PT |
2612 | if (dealloc) |
2613 | gfc_commit_symbol (dealloc); | |
2614 | if (arg) | |
2615 | gfc_commit_symbol (arg); | |
e10f52d0 | 2616 | } |
81fb8a48 MM |
2617 | else |
2618 | gfc_undo_symbols (); | |
2619 | ||
2620 | return found_sym; | |
d15bac21 JW |
2621 | } |
2622 | ||
2623 | ||
86035eec TB |
2624 | /* Check if a derived type is finalizable. That is the case if it |
2625 | (1) has a FINAL subroutine or | |
2626 | (2) has a nonpointer nonallocatable component of finalizable type. | |
2627 | If it is finalizable, return an expression containing the | |
2628 | finalization wrapper. */ | |
2629 | ||
2630 | bool | |
2631 | gfc_is_finalizable (gfc_symbol *derived, gfc_expr **final_expr) | |
2632 | { | |
2633 | gfc_symbol *vtab; | |
2634 | gfc_component *c; | |
2635 | ||
2636 | /* (1) Check for FINAL subroutines. */ | |
2637 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2638 | goto yes; | |
2639 | ||
2640 | /* (2) Check for components of finalizable type. */ | |
2641 | for (c = derived->components; c; c = c->next) | |
2642 | if (c->ts.type == BT_DERIVED | |
2643 | && !c->attr.pointer && !c->attr.proc_pointer && !c->attr.allocatable | |
2644 | && gfc_is_finalizable (c->ts.u.derived, NULL)) | |
2645 | goto yes; | |
2646 | ||
2647 | return false; | |
2648 | ||
2649 | yes: | |
2650 | /* Make sure vtab is generated. */ | |
2651 | vtab = gfc_find_derived_vtab (derived); | |
2652 | if (final_expr) | |
2653 | { | |
2654 | /* Return finalizer expression. */ | |
2655 | gfc_component *final; | |
2656 | final = vtab->ts.u.derived->components->next->next->next->next->next; | |
2657 | gcc_assert (strcmp (final->name, "_final") == 0); | |
2658 | gcc_assert (final->initializer | |
2659 | && final->initializer->expr_type != EXPR_NULL); | |
2660 | *final_expr = final->initializer; | |
2661 | } | |
2662 | return true; | |
2663 | } | |
2664 | ||
2665 | ||
8b704316 | 2666 | /* Find (or generate) the symbol for an intrinsic type's vtab. This is |
7289d1c9 | 2667 | needed to support unlimited polymorphism. */ |
8b704316 | 2668 | |
7289d1c9 JW |
2669 | static gfc_symbol * |
2670 | find_intrinsic_vtab (gfc_typespec *ts) | |
8b704316 PT |
2671 | { |
2672 | gfc_namespace *ns; | |
adede54c | 2673 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL; |
8b704316 | 2674 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
8b704316 | 2675 | |
8b704316 PT |
2676 | /* Find the top-level namespace. */ |
2677 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
2678 | if (!ns->parent) | |
2679 | break; | |
2680 | ||
8b704316 PT |
2681 | if (ns) |
2682 | { | |
2004617a QZ |
2683 | char tname[GFC_MAX_SYMBOL_LEN+1]; |
2684 | char *name; | |
b120c8b2 | 2685 | |
cef026ec AV |
2686 | /* Encode all types as TYPENAME_KIND_ including especially character |
2687 | arrays, whose length is now consistently stored in the _len component | |
2688 | of the class-variable. */ | |
2689 | sprintf (tname, "%s_%d_", gfc_basic_typename (ts->type), ts->kind); | |
2004617a | 2690 | name = xasprintf ("__vtab_%s", tname); |
8b704316 | 2691 | |
63631f7d AV |
2692 | /* Look for the vtab symbol in the top-level namespace only. */ |
2693 | gfc_find_symbol (name, ns, 0, &vtab); | |
8b704316 PT |
2694 | |
2695 | if (vtab == NULL) | |
2696 | { | |
2697 | gfc_get_symbol (name, ns, &vtab); | |
2698 | vtab->ts.type = BT_DERIVED; | |
cddf0123 | 2699 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
524af0d6 | 2700 | &gfc_current_locus)) |
8b704316 PT |
2701 | goto cleanup; |
2702 | vtab->attr.target = 1; | |
2703 | vtab->attr.save = SAVE_IMPLICIT; | |
2704 | vtab->attr.vtab = 1; | |
2705 | vtab->attr.access = ACCESS_PUBLIC; | |
2706 | gfc_set_sym_referenced (vtab); | |
2004617a | 2707 | name = xasprintf ("__vtype_%s", tname); |
8b704316 PT |
2708 | |
2709 | gfc_find_symbol (name, ns, 0, &vtype); | |
2710 | if (vtype == NULL) | |
2711 | { | |
2712 | gfc_component *c; | |
2713 | int hash; | |
2714 | gfc_namespace *sub_ns; | |
2715 | gfc_namespace *contained; | |
cddf0123 | 2716 | gfc_expr *e; |
cdd17931 | 2717 | size_t e_size; |
8b704316 PT |
2718 | |
2719 | gfc_get_symbol (name, ns, &vtype); | |
cddf0123 | 2720 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
524af0d6 | 2721 | &gfc_current_locus)) |
8b704316 PT |
2722 | goto cleanup; |
2723 | vtype->attr.access = ACCESS_PUBLIC; | |
2724 | vtype->attr.vtype = 1; | |
2725 | gfc_set_sym_referenced (vtype); | |
2726 | ||
2727 | /* Add component '_hash'. */ | |
524af0d6 | 2728 | if (!gfc_add_component (vtype, "_hash", &c)) |
8b704316 PT |
2729 | goto cleanup; |
2730 | c->ts.type = BT_INTEGER; | |
2731 | c->ts.kind = 4; | |
2732 | c->attr.access = ACCESS_PRIVATE; | |
2733 | hash = gfc_intrinsic_hash_value (ts); | |
2734 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2735 | NULL, hash); | |
2736 | ||
2737 | /* Add component '_size'. */ | |
524af0d6 | 2738 | if (!gfc_add_component (vtype, "_size", &c)) |
8b704316 PT |
2739 | goto cleanup; |
2740 | c->ts.type = BT_INTEGER; | |
f622221a | 2741 | c->ts.kind = gfc_size_kind; |
8b704316 | 2742 | c->attr.access = ACCESS_PRIVATE; |
cddf0123 PT |
2743 | |
2744 | /* Build a minimal expression to make use of | |
34d9d749 AV |
2745 | target-memory.c/gfc_element_size for 'size'. Special handling |
2746 | for character arrays, that are not constant sized: to support | |
2747 | len (str) * kind, only the kind information is stored in the | |
2748 | vtab. */ | |
cddf0123 PT |
2749 | e = gfc_get_expr (); |
2750 | e->ts = *ts; | |
2751 | e->expr_type = EXPR_VARIABLE; | |
cdd17931 HA |
2752 | if (ts->type == BT_CHARACTER) |
2753 | e_size = ts->kind; | |
2754 | else | |
2755 | gfc_element_size (e, &e_size); | |
f622221a | 2756 | c->initializer = gfc_get_int_expr (gfc_size_kind, |
cddf0123 | 2757 | NULL, |
cdd17931 | 2758 | e_size); |
cddf0123 | 2759 | gfc_free_expr (e); |
8b704316 PT |
2760 | |
2761 | /* Add component _extends. */ | |
524af0d6 | 2762 | if (!gfc_add_component (vtype, "_extends", &c)) |
8b704316 PT |
2763 | goto cleanup; |
2764 | c->attr.pointer = 1; | |
2765 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2766 | c->ts.type = BT_VOID; |
8b704316 PT |
2767 | c->initializer = gfc_get_null_expr (NULL); |
2768 | ||
2769 | /* Add component _def_init. */ | |
524af0d6 | 2770 | if (!gfc_add_component (vtype, "_def_init", &c)) |
8b704316 PT |
2771 | goto cleanup; |
2772 | c->attr.pointer = 1; | |
2773 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2774 | c->ts.type = BT_VOID; |
8b704316 PT |
2775 | c->initializer = gfc_get_null_expr (NULL); |
2776 | ||
2777 | /* Add component _copy. */ | |
524af0d6 | 2778 | if (!gfc_add_component (vtype, "_copy", &c)) |
8b704316 PT |
2779 | goto cleanup; |
2780 | c->attr.proc_pointer = 1; | |
2781 | c->attr.access = ACCESS_PRIVATE; | |
2782 | c->tb = XCNEW (gfc_typebound_proc); | |
2783 | c->tb->ppc = 1; | |
2784 | ||
3c3f892b | 2785 | if (ts->type != BT_CHARACTER) |
2004617a | 2786 | name = xasprintf ("__copy_%s", tname); |
3c3f892b JW |
2787 | else |
2788 | { | |
2789 | /* __copy is always the same for characters. | |
2790 | Check to see if copy function already exists. */ | |
2004617a | 2791 | name = xasprintf ("__copy_character_%d", ts->kind); |
3c3f892b JW |
2792 | contained = ns->contained; |
2793 | for (; contained; contained = contained->sibling) | |
2794 | if (contained->proc_name | |
2795 | && strcmp (name, contained->proc_name->name) == 0) | |
2796 | { | |
2797 | copy = contained->proc_name; | |
2798 | goto got_char_copy; | |
2799 | } | |
2800 | } | |
8b704316 PT |
2801 | |
2802 | /* Set up namespace. */ | |
2803 | sub_ns = gfc_get_namespace (ns, 0); | |
2804 | sub_ns->sibling = ns->contained; | |
2805 | ns->contained = sub_ns; | |
2806 | sub_ns->resolved = 1; | |
2807 | /* Set up procedure symbol. */ | |
8b704316 PT |
2808 | gfc_get_symbol (name, sub_ns, ©); |
2809 | sub_ns->proc_name = copy; | |
2810 | copy->attr.flavor = FL_PROCEDURE; | |
2811 | copy->attr.subroutine = 1; | |
2812 | copy->attr.pure = 1; | |
2813 | copy->attr.if_source = IFSRC_DECL; | |
2814 | /* This is elemental so that arrays are automatically | |
2815 | treated correctly by the scalarizer. */ | |
2816 | copy->attr.elemental = 1; | |
f8add009 | 2817 | if (ns->proc_name && ns->proc_name->attr.flavor == FL_MODULE) |
8b704316 | 2818 | copy->module = ns->proc_name->name; |
f8add009 | 2819 | gfc_set_sym_referenced (copy); |
8b704316 PT |
2820 | /* Set up formal arguments. */ |
2821 | gfc_get_symbol ("src", sub_ns, &src); | |
2822 | src->ts.type = ts->type; | |
2823 | src->ts.kind = ts->kind; | |
2824 | src->attr.flavor = FL_VARIABLE; | |
2825 | src->attr.dummy = 1; | |
2826 | src->attr.intent = INTENT_IN; | |
2827 | gfc_set_sym_referenced (src); | |
2828 | copy->formal = gfc_get_formal_arglist (); | |
2829 | copy->formal->sym = src; | |
2830 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2831 | dst->ts.type = ts->type; | |
2832 | dst->ts.kind = ts->kind; | |
2833 | dst->attr.flavor = FL_VARIABLE; | |
2834 | dst->attr.dummy = 1; | |
16023efc | 2835 | dst->attr.intent = INTENT_INOUT; |
8b704316 PT |
2836 | gfc_set_sym_referenced (dst); |
2837 | copy->formal->next = gfc_get_formal_arglist (); | |
2838 | copy->formal->next->sym = dst; | |
2839 | /* Set up code. */ | |
11e5274a | 2840 | sub_ns->code = gfc_get_code (EXEC_INIT_ASSIGN); |
8b704316 PT |
2841 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2842 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2843 | got_char_copy: | |
2844 | /* Set initializer. */ | |
2845 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2846 | c->ts.interface = copy; | |
94241120 TB |
2847 | |
2848 | /* Add component _final. */ | |
524af0d6 | 2849 | if (!gfc_add_component (vtype, "_final", &c)) |
94241120 TB |
2850 | goto cleanup; |
2851 | c->attr.proc_pointer = 1; | |
2852 | c->attr.access = ACCESS_PRIVATE; | |
f8add009 | 2853 | c->attr.artificial = 1; |
94241120 TB |
2854 | c->tb = XCNEW (gfc_typebound_proc); |
2855 | c->tb->ppc = 1; | |
2856 | c->initializer = gfc_get_null_expr (NULL); | |
8b704316 PT |
2857 | } |
2858 | vtab->ts.u.derived = vtype; | |
2859 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2860 | } | |
2004617a | 2861 | free (name); |
8b704316 PT |
2862 | } |
2863 | ||
2864 | found_sym = vtab; | |
2865 | ||
2866 | cleanup: | |
2867 | /* It is unexpected to have some symbols added at resolution or code | |
2868 | generation time. We commit the changes in order to keep a clean state. */ | |
2869 | if (found_sym) | |
2870 | { | |
2871 | gfc_commit_symbol (vtab); | |
2872 | if (vtype) | |
2873 | gfc_commit_symbol (vtype); | |
8b704316 PT |
2874 | if (copy) |
2875 | gfc_commit_symbol (copy); | |
2876 | if (src) | |
2877 | gfc_commit_symbol (src); | |
2878 | if (dst) | |
2879 | gfc_commit_symbol (dst); | |
2880 | } | |
2881 | else | |
2882 | gfc_undo_symbols (); | |
2883 | ||
2884 | return found_sym; | |
2885 | } | |
2886 | ||
2887 | ||
7289d1c9 JW |
2888 | /* Find (or generate) a vtab for an arbitrary type (derived or intrinsic). */ |
2889 | ||
2890 | gfc_symbol * | |
2891 | gfc_find_vtab (gfc_typespec *ts) | |
2892 | { | |
2893 | switch (ts->type) | |
2894 | { | |
2895 | case BT_UNKNOWN: | |
2896 | return NULL; | |
2897 | case BT_DERIVED: | |
2898 | return gfc_find_derived_vtab (ts->u.derived); | |
2899 | case BT_CLASS: | |
903ecc6c JW |
2900 | if (ts->u.derived->components && ts->u.derived->components->ts.u.derived) |
2901 | return gfc_find_derived_vtab (ts->u.derived->components->ts.u.derived); | |
2902 | else | |
2903 | return NULL; | |
7289d1c9 JW |
2904 | default: |
2905 | return find_intrinsic_vtab (ts); | |
2906 | } | |
2907 | } | |
2908 | ||
2909 | ||
d15bac21 JW |
2910 | /* General worker function to find either a type-bound procedure or a |
2911 | type-bound user operator. */ | |
2912 | ||
2913 | static gfc_symtree* | |
524af0d6 | 2914 | find_typebound_proc_uop (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2915 | const char* name, bool noaccess, bool uop, |
2916 | locus* where) | |
2917 | { | |
2918 | gfc_symtree* res; | |
2919 | gfc_symtree* root; | |
2920 | ||
d15bac21 JW |
2921 | /* Set default to failure. */ |
2922 | if (t) | |
524af0d6 | 2923 | *t = false; |
d15bac21 | 2924 | |
9b940c6d JW |
2925 | if (derived->f2k_derived) |
2926 | /* Set correct symbol-root. */ | |
2927 | root = (uop ? derived->f2k_derived->tb_uop_root | |
2928 | : derived->f2k_derived->tb_sym_root); | |
2929 | else | |
2930 | return NULL; | |
2931 | ||
d15bac21 JW |
2932 | /* Try to find it in the current type's namespace. */ |
2933 | res = gfc_find_symtree (root, name); | |
2934 | if (res && res->n.tb && !res->n.tb->error) | |
2935 | { | |
2936 | /* We found one. */ | |
2937 | if (t) | |
524af0d6 | 2938 | *t = true; |
d15bac21 JW |
2939 | |
2940 | if (!noaccess && derived->attr.use_assoc | |
2941 | && res->n.tb->access == ACCESS_PRIVATE) | |
2942 | { | |
2943 | if (where) | |
c4100eae | 2944 | gfc_error ("%qs of %qs is PRIVATE at %L", |
d15bac21 JW |
2945 | name, derived->name, where); |
2946 | if (t) | |
524af0d6 | 2947 | *t = false; |
d15bac21 JW |
2948 | } |
2949 | ||
2950 | return res; | |
2951 | } | |
2952 | ||
2953 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2954 | if (derived->attr.extension) | |
2955 | { | |
2956 | gfc_symbol* super_type; | |
2957 | super_type = gfc_get_derived_super_type (derived); | |
2958 | gcc_assert (super_type); | |
2959 | ||
2960 | return find_typebound_proc_uop (super_type, t, name, | |
2961 | noaccess, uop, where); | |
2962 | } | |
2963 | ||
2964 | /* Nothing found. */ | |
2965 | return NULL; | |
2966 | } | |
2967 | ||
2968 | ||
2969 | /* Find a type-bound procedure or user operator by name for a derived-type | |
2970 | (looking recursively through the super-types). */ | |
2971 | ||
2972 | gfc_symtree* | |
524af0d6 | 2973 | gfc_find_typebound_proc (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2974 | const char* name, bool noaccess, locus* where) |
2975 | { | |
2976 | return find_typebound_proc_uop (derived, t, name, noaccess, false, where); | |
2977 | } | |
2978 | ||
2979 | gfc_symtree* | |
524af0d6 | 2980 | gfc_find_typebound_user_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2981 | const char* name, bool noaccess, locus* where) |
2982 | { | |
2983 | return find_typebound_proc_uop (derived, t, name, noaccess, true, where); | |
2984 | } | |
2985 | ||
2986 | ||
2987 | /* Find a type-bound intrinsic operator looking recursively through the | |
2988 | super-type hierarchy. */ | |
2989 | ||
2990 | gfc_typebound_proc* | |
524af0d6 | 2991 | gfc_find_typebound_intrinsic_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2992 | gfc_intrinsic_op op, bool noaccess, |
2993 | locus* where) | |
2994 | { | |
2995 | gfc_typebound_proc* res; | |
2996 | ||
2997 | /* Set default to failure. */ | |
2998 | if (t) | |
524af0d6 | 2999 | *t = false; |
d15bac21 JW |
3000 | |
3001 | /* Try to find it in the current type's namespace. */ | |
3002 | if (derived->f2k_derived) | |
3003 | res = derived->f2k_derived->tb_op[op]; | |
8b704316 | 3004 | else |
d15bac21 JW |
3005 | res = NULL; |
3006 | ||
3007 | /* Check access. */ | |
3008 | if (res && !res->error) | |
3009 | { | |
3010 | /* We found one. */ | |
3011 | if (t) | |
524af0d6 | 3012 | *t = true; |
d15bac21 JW |
3013 | |
3014 | if (!noaccess && derived->attr.use_assoc | |
3015 | && res->access == ACCESS_PRIVATE) | |
3016 | { | |
3017 | if (where) | |
c4100eae | 3018 | gfc_error ("%qs of %qs is PRIVATE at %L", |
d15bac21 JW |
3019 | gfc_op2string (op), derived->name, where); |
3020 | if (t) | |
524af0d6 | 3021 | *t = false; |
d15bac21 JW |
3022 | } |
3023 | ||
3024 | return res; | |
3025 | } | |
3026 | ||
3027 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
3028 | if (derived->attr.extension) | |
3029 | { | |
3030 | gfc_symbol* super_type; | |
3031 | super_type = gfc_get_derived_super_type (derived); | |
3032 | gcc_assert (super_type); | |
3033 | ||
3034 | return gfc_find_typebound_intrinsic_op (super_type, t, op, | |
3035 | noaccess, where); | |
3036 | } | |
3037 | ||
3038 | /* Nothing found. */ | |
3039 | return NULL; | |
3040 | } | |
3041 | ||
3042 | ||
3043 | /* Get a typebound-procedure symtree or create and insert it if not yet | |
3044 | present. This is like a very simplified version of gfc_get_sym_tree for | |
3045 | tbp-symtrees rather than regular ones. */ | |
3046 | ||
3047 | gfc_symtree* | |
3048 | gfc_get_tbp_symtree (gfc_symtree **root, const char *name) | |
3049 | { | |
b93d8a3f JW |
3050 | gfc_symtree *result = gfc_find_symtree (*root, name); |
3051 | return result ? result : gfc_new_symtree (root, name); | |
d15bac21 | 3052 | } |