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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 | ||
479 | static void | |
480 | get_unique_type_string (char *string, gfc_symbol *derived) | |
b52956be JW |
481 | { |
482 | char dt_name[GFC_MAX_SYMBOL_LEN+1]; | |
8b704316 | 483 | if (derived->attr.unlimited_polymorphic) |
f5acf0f2 | 484 | strcpy (dt_name, "STAR"); |
8b704316 | 485 | else |
f6288c24 | 486 | strcpy (dt_name, gfc_dt_upper_string (derived->name)); |
8b704316 PT |
487 | if (derived->attr.unlimited_polymorphic) |
488 | sprintf (string, "_%s", dt_name); | |
489 | else if (derived->module) | |
b52956be | 490 | sprintf (string, "%s_%s", derived->module, dt_name); |
4fa02692 | 491 | else if (derived->ns->proc_name) |
b52956be | 492 | sprintf (string, "%s_%s", derived->ns->proc_name->name, dt_name); |
4fa02692 | 493 | else |
b52956be | 494 | sprintf (string, "_%s", dt_name); |
4fa02692 JW |
495 | } |
496 | ||
497 | ||
498 | /* A relative of 'get_unique_type_string' which makes sure the generated | |
499 | string will not be too long (replacing it by a hash string if needed). */ | |
500 | ||
501 | static void | |
502 | get_unique_hashed_string (char *string, gfc_symbol *derived) | |
503 | { | |
504 | char tmp[2*GFC_MAX_SYMBOL_LEN+2]; | |
505 | get_unique_type_string (&tmp[0], derived); | |
cb83a137 | 506 | /* If string is too long, use hash value in hex representation (allow for |
2419ff64 TB |
507 | extra decoration, cf. gfc_build_class_symbol & gfc_find_derived_vtab). |
508 | We need space to for 15 characters "__class_" + symbol name + "_%d_%da", | |
509 | where %d is the (co)rank which can be up to n = 15. */ | |
510 | if (strlen (tmp) > GFC_MAX_SYMBOL_LEN - 15) | |
4fa02692 JW |
511 | { |
512 | int h = gfc_hash_value (derived); | |
513 | sprintf (string, "%X", h); | |
514 | } | |
515 | else | |
516 | strcpy (string, tmp); | |
517 | } | |
518 | ||
519 | ||
520 | /* Assign a hash value for a derived type. The algorithm is that of SDBM. */ | |
521 | ||
522 | unsigned int | |
523 | gfc_hash_value (gfc_symbol *sym) | |
524 | { | |
525 | unsigned int hash = 0; | |
526 | char c[2*(GFC_MAX_SYMBOL_LEN+1)]; | |
527 | int i, len; | |
8b704316 | 528 | |
4fa02692 JW |
529 | get_unique_type_string (&c[0], sym); |
530 | len = strlen (c); | |
8b704316 PT |
531 | |
532 | for (i = 0; i < len; i++) | |
533 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
534 | ||
535 | /* Return the hash but take the modulus for the sake of module read, | |
536 | even though this slightly increases the chance of collision. */ | |
537 | return (hash % 100000000); | |
538 | } | |
539 | ||
540 | ||
541 | /* Assign a hash value for an intrinsic type. The algorithm is that of SDBM. */ | |
542 | ||
543 | unsigned int | |
544 | gfc_intrinsic_hash_value (gfc_typespec *ts) | |
545 | { | |
546 | unsigned int hash = 0; | |
547 | const char *c = gfc_typename (ts); | |
548 | int i, len; | |
549 | ||
550 | len = strlen (c); | |
551 | ||
4fa02692 JW |
552 | for (i = 0; i < len; i++) |
553 | hash = (hash << 6) + (hash << 16) - hash + c[i]; | |
554 | ||
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); | |
b04533af JW |
558 | } |
559 | ||
560 | ||
5b384b3d PT |
561 | /* Get the _len component from a class/derived object storing a string. |
562 | For unlimited polymorphic entities a ref to the _data component is available | |
563 | while a ref to the _len component is needed. This routine traverese the | |
564 | ref-chain and strips the last ref to a _data from it replacing it with a | |
565 | ref to the _len component. */ | |
566 | ||
567 | gfc_expr * | |
9e6644c6 | 568 | gfc_get_len_component (gfc_expr *e, int k) |
5b384b3d PT |
569 | { |
570 | gfc_expr *ptr; | |
571 | gfc_ref *ref, **last; | |
572 | ||
573 | ptr = gfc_copy_expr (e); | |
574 | ||
575 | /* We need to remove the last _data component ref from ptr. */ | |
576 | last = &(ptr->ref); | |
577 | ref = ptr->ref; | |
578 | while (ref) | |
579 | { | |
580 | if (!ref->next | |
581 | && ref->type == REF_COMPONENT | |
582 | && strcmp ("_data", ref->u.c.component->name)== 0) | |
583 | { | |
584 | gfc_free_ref_list (ref); | |
585 | *last = NULL; | |
586 | break; | |
587 | } | |
588 | last = &(ref->next); | |
589 | ref = ref->next; | |
590 | } | |
591 | /* And replace if with a ref to the _len component. */ | |
d42844f1 | 592 | gfc_add_len_component (ptr); |
9e6644c6 TK |
593 | if (k != ptr->ts.kind) |
594 | { | |
595 | gfc_typespec ts; | |
596 | gfc_clear_ts (&ts); | |
597 | ts.type = BT_INTEGER; | |
598 | ts.kind = k; | |
599 | gfc_convert_type_warn (ptr, &ts, 2, 0); | |
600 | } | |
5b384b3d PT |
601 | return ptr; |
602 | } | |
603 | ||
604 | ||
d15bac21 JW |
605 | /* Build a polymorphic CLASS entity, using the symbol that comes from |
606 | build_sym. A CLASS entity is represented by an encapsulating type, | |
b04533af | 607 | which contains the declared type as '_data' component, plus a pointer |
5b384b3d PT |
608 | component '_vptr' which determines the dynamic type. When this CLASS |
609 | entity is unlimited polymorphic, then also add a component '_len' to | |
610 | store the length of string when that is stored in it. */ | |
d15bac21 | 611 | |
524af0d6 | 612 | bool |
d15bac21 | 613 | gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr, |
9b6da3c7 | 614 | gfc_array_spec **as) |
d15bac21 | 615 | { |
2004617a QZ |
616 | char tname[GFC_MAX_SYMBOL_LEN+1]; |
617 | char *name; | |
d15bac21 JW |
618 | gfc_symbol *fclass; |
619 | gfc_symbol *vtab; | |
620 | gfc_component *c; | |
8b704316 | 621 | gfc_namespace *ns; |
c62c6622 | 622 | int rank; |
c49ea23d | 623 | |
fc2655fb TB |
624 | gcc_assert (as); |
625 | ||
626 | if (*as && (*as)->type == AS_ASSUMED_SIZE) | |
c49ea23d PT |
627 | { |
628 | gfc_error ("Assumed size polymorphic objects or components, such " | |
629 | "as that at %C, have not yet been implemented"); | |
524af0d6 | 630 | return false; |
c49ea23d PT |
631 | } |
632 | ||
528622fd JW |
633 | if (attr->class_ok) |
634 | /* Class container has already been built. */ | |
524af0d6 | 635 | return true; |
528622fd | 636 | |
7d40e49f | 637 | attr->class_ok = attr->dummy || attr->pointer || attr->allocatable |
aa271860 | 638 | || attr->select_type_temporary || attr->associate_var; |
8b704316 | 639 | |
528622fd | 640 | if (!attr->class_ok) |
67914693 | 641 | /* We cannot build the class container yet. */ |
524af0d6 | 642 | return true; |
d15bac21 JW |
643 | |
644 | /* Determine the name of the encapsulating type. */ | |
c62c6622 | 645 | rank = !(*as) || (*as)->rank == -1 ? GFC_MAX_DIMENSIONS : (*as)->rank; |
4fa02692 | 646 | get_unique_hashed_string (tname, ts->u.derived); |
2419ff64 | 647 | if ((*as) && attr->allocatable) |
2004617a | 648 | name = xasprintf ("__class_%s_%d_%da", tname, rank, (*as)->corank); |
c62c6622 | 649 | else if ((*as) && attr->pointer) |
2004617a | 650 | name = xasprintf ("__class_%s_%d_%dp", tname, rank, (*as)->corank); |
2419ff64 | 651 | else if ((*as)) |
2004617a | 652 | name = xasprintf ("__class_%s_%d_%dt", tname, rank, (*as)->corank); |
d15bac21 | 653 | else if (attr->pointer) |
2004617a | 654 | name = xasprintf ("__class_%s_p", tname); |
d15bac21 | 655 | else if (attr->allocatable) |
2004617a | 656 | name = xasprintf ("__class_%s_a", tname); |
d15bac21 | 657 | else |
2004617a | 658 | name = xasprintf ("__class_%s_t", tname); |
d15bac21 | 659 | |
8b704316 PT |
660 | if (ts->u.derived->attr.unlimited_polymorphic) |
661 | { | |
662 | /* Find the top-level namespace. */ | |
663 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
664 | if (!ns->parent) | |
665 | break; | |
666 | } | |
667 | else | |
668 | ns = ts->u.derived->ns; | |
669 | ||
670 | gfc_find_symbol (name, ns, 0, &fclass); | |
d15bac21 JW |
671 | if (fclass == NULL) |
672 | { | |
673 | gfc_symtree *st; | |
674 | /* If not there, create a new symbol. */ | |
8b704316 PT |
675 | fclass = gfc_new_symbol (name, ns); |
676 | st = gfc_new_symtree (&ns->sym_root, name); | |
d15bac21 JW |
677 | st->n.sym = fclass; |
678 | gfc_set_sym_referenced (fclass); | |
679 | fclass->refs++; | |
680 | fclass->ts.type = BT_UNKNOWN; | |
8b704316 | 681 | if (!ts->u.derived->attr.unlimited_polymorphic) |
94241120 | 682 | fclass->attr.abstract = ts->u.derived->attr.abstract; |
42ff605a | 683 | fclass->f2k_derived = gfc_get_namespace (NULL, 0); |
cddf0123 | 684 | if (!gfc_add_flavor (&fclass->attr, FL_DERIVED, NULL, |
524af0d6 JB |
685 | &gfc_current_locus)) |
686 | return false; | |
d15bac21 | 687 | |
b04533af | 688 | /* Add component '_data'. */ |
524af0d6 JB |
689 | if (!gfc_add_component (fclass, "_data", &c)) |
690 | return false; | |
d15bac21 JW |
691 | c->ts = *ts; |
692 | c->ts.type = BT_DERIVED; | |
693 | c->attr.access = ACCESS_PRIVATE; | |
694 | c->ts.u.derived = ts->u.derived; | |
695 | c->attr.class_pointer = attr->pointer; | |
7d40e49f TB |
696 | c->attr.pointer = attr->pointer || (attr->dummy && !attr->allocatable) |
697 | || attr->select_type_temporary; | |
d15bac21 JW |
698 | c->attr.allocatable = attr->allocatable; |
699 | c->attr.dimension = attr->dimension; | |
700 | c->attr.codimension = attr->codimension; | |
8b704316 | 701 | c->attr.abstract = fclass->attr.abstract; |
d15bac21 JW |
702 | c->as = (*as); |
703 | c->initializer = NULL; | |
704 | ||
b04533af | 705 | /* Add component '_vptr'. */ |
524af0d6 JB |
706 | if (!gfc_add_component (fclass, "_vptr", &c)) |
707 | return false; | |
d15bac21 | 708 | c->ts.type = BT_DERIVED; |
5b384b3d PT |
709 | c->attr.access = ACCESS_PRIVATE; |
710 | c->attr.pointer = 1; | |
9b6da3c7 JW |
711 | |
712 | if (ts->u.derived->attr.unlimited_polymorphic) | |
d15bac21 | 713 | { |
88ce8031 | 714 | vtab = gfc_find_derived_vtab (ts->u.derived); |
d15bac21 JW |
715 | gcc_assert (vtab); |
716 | c->ts.u.derived = vtab->ts.u.derived; | |
5b384b3d PT |
717 | |
718 | /* Add component '_len'. Only unlimited polymorphic pointers may | |
719 | have a string assigned to them, i.e., only those need the _len | |
720 | component. */ | |
721 | if (!gfc_add_component (fclass, "_len", &c)) | |
722 | return false; | |
723 | c->ts.type = BT_INTEGER; | |
40cc684d | 724 | c->ts.kind = gfc_charlen_int_kind; |
5b384b3d PT |
725 | c->attr.access = ACCESS_PRIVATE; |
726 | c->attr.artificial = 1; | |
d15bac21 | 727 | } |
9b6da3c7 JW |
728 | else |
729 | /* Build vtab later. */ | |
730 | c->ts.u.derived = NULL; | |
d15bac21 JW |
731 | } |
732 | ||
8b704316 | 733 | if (!ts->u.derived->attr.unlimited_polymorphic) |
d15bac21 | 734 | { |
8b704316 PT |
735 | /* Since the extension field is 8 bit wide, we can only have |
736 | up to 255 extension levels. */ | |
737 | if (ts->u.derived->attr.extension == 255) | |
738 | { | |
c4100eae | 739 | gfc_error ("Maximum extension level reached with type %qs at %L", |
8b704316 | 740 | ts->u.derived->name, &ts->u.derived->declared_at); |
524af0d6 | 741 | return false; |
8b704316 PT |
742 | } |
743 | ||
744 | fclass->attr.extension = ts->u.derived->attr.extension + 1; | |
745 | fclass->attr.alloc_comp = ts->u.derived->attr.alloc_comp; | |
558f3755 | 746 | fclass->attr.coarray_comp = ts->u.derived->attr.coarray_comp; |
d15bac21 | 747 | } |
8b704316 | 748 | |
d15bac21 JW |
749 | fclass->attr.is_class = 1; |
750 | ts->u.derived = fclass; | |
c49ea23d PT |
751 | attr->allocatable = attr->pointer = attr->dimension = attr->codimension = 0; |
752 | (*as) = NULL; | |
2004617a | 753 | free (name); |
524af0d6 | 754 | return true; |
d15bac21 JW |
755 | } |
756 | ||
757 | ||
88ce8031 JW |
758 | /* Add a procedure pointer component to the vtype |
759 | to represent a specific type-bound procedure. */ | |
760 | ||
d15bac21 | 761 | static void |
88ce8031 | 762 | add_proc_comp (gfc_symbol *vtype, const char *name, gfc_typebound_proc *tb) |
d15bac21 | 763 | { |
88ce8031 | 764 | gfc_component *c; |
fd83db3d | 765 | |
5d382ed6 | 766 | if (tb->non_overridable && !tb->overridden) |
fd83db3d | 767 | return; |
8b704316 | 768 | |
f6288c24 | 769 | c = gfc_find_component (vtype, name, true, true, NULL); |
88ce8031 JW |
770 | |
771 | if (c == NULL) | |
d15bac21 | 772 | { |
88ce8031 | 773 | /* Add procedure component. */ |
524af0d6 | 774 | if (!gfc_add_component (vtype, name, &c)) |
d15bac21 | 775 | return; |
d15bac21 | 776 | |
88ce8031 JW |
777 | if (!c->tb) |
778 | c->tb = XCNEW (gfc_typebound_proc); | |
779 | *c->tb = *tb; | |
780 | c->tb->ppc = 1; | |
781 | c->attr.procedure = 1; | |
782 | c->attr.proc_pointer = 1; | |
783 | c->attr.flavor = FL_PROCEDURE; | |
784 | c->attr.access = ACCESS_PRIVATE; | |
785 | c->attr.external = 1; | |
786 | c->attr.untyped = 1; | |
787 | c->attr.if_source = IFSRC_IFBODY; | |
d15bac21 JW |
788 | } |
789 | else if (c->attr.proc_pointer && c->tb) | |
790 | { | |
88ce8031 | 791 | *c->tb = *tb; |
d15bac21 | 792 | c->tb->ppc = 1; |
1d0134b3 JW |
793 | } |
794 | ||
795 | if (tb->u.specific) | |
796 | { | |
e8ed3750 JW |
797 | gfc_symbol *ifc = tb->u.specific->n.sym; |
798 | c->ts.interface = ifc; | |
1d0134b3 JW |
799 | if (!tb->deferred) |
800 | c->initializer = gfc_get_variable_expr (tb->u.specific); | |
e8ed3750 | 801 | c->attr.pure = ifc->attr.pure; |
d15bac21 JW |
802 | } |
803 | } | |
804 | ||
88ce8031 JW |
805 | |
806 | /* Add all specific type-bound procedures in the symtree 'st' to a vtype. */ | |
807 | ||
d15bac21 | 808 | static void |
88ce8031 | 809 | add_procs_to_declared_vtab1 (gfc_symtree *st, gfc_symbol *vtype) |
d15bac21 | 810 | { |
d15bac21 JW |
811 | if (!st) |
812 | return; | |
813 | ||
814 | if (st->left) | |
88ce8031 | 815 | add_procs_to_declared_vtab1 (st->left, vtype); |
d15bac21 JW |
816 | |
817 | if (st->right) | |
88ce8031 | 818 | add_procs_to_declared_vtab1 (st->right, vtype); |
d15bac21 | 819 | |
8b704316 | 820 | if (st->n.tb && !st->n.tb->error |
aea18e92 | 821 | && !st->n.tb->is_generic && st->n.tb->u.specific) |
88ce8031 | 822 | add_proc_comp (vtype, st->name, st->n.tb); |
d15bac21 JW |
823 | } |
824 | ||
825 | ||
88ce8031 JW |
826 | /* Copy procedure pointers components from the parent type. */ |
827 | ||
d15bac21 | 828 | static void |
88ce8031 | 829 | copy_vtab_proc_comps (gfc_symbol *declared, gfc_symbol *vtype) |
d15bac21 | 830 | { |
88ce8031 | 831 | gfc_component *cmp; |
d15bac21 JW |
832 | gfc_symbol *vtab; |
833 | ||
88ce8031 | 834 | vtab = gfc_find_derived_vtab (declared); |
d15bac21 JW |
835 | |
836 | for (cmp = vtab->ts.u.derived->components; cmp; cmp = cmp->next) | |
837 | { | |
f6288c24 | 838 | if (gfc_find_component (vtype, cmp->name, true, true, NULL)) |
d15bac21 JW |
839 | continue; |
840 | ||
88ce8031 | 841 | add_proc_comp (vtype, cmp->name, cmp->tb); |
d15bac21 JW |
842 | } |
843 | } | |
844 | ||
d15bac21 | 845 | |
8e54f139 TB |
846 | /* Returns true if any of its nonpointer nonallocatable components or |
847 | their nonpointer nonallocatable subcomponents has a finalization | |
848 | subroutine. */ | |
849 | ||
850 | static bool | |
851 | has_finalizer_component (gfc_symbol *derived) | |
852 | { | |
853 | gfc_component *c; | |
854 | ||
855 | for (c = derived->components; c; c = c->next) | |
cdeb16cb JW |
856 | if (c->ts.type == BT_DERIVED && !c->attr.pointer && !c->attr.allocatable) |
857 | { | |
858 | if (c->ts.u.derived->f2k_derived | |
859 | && c->ts.u.derived->f2k_derived->finalizers) | |
860 | return true; | |
861 | ||
862 | /* Stop infinite recursion through this function by inhibiting | |
863 | calls when the derived type and that of the component are | |
864 | the same. */ | |
865 | if (!gfc_compare_derived_types (derived, c->ts.u.derived) | |
866 | && has_finalizer_component (c->ts.u.derived)) | |
867 | return true; | |
868 | } | |
8e54f139 TB |
869 | return false; |
870 | } | |
871 | ||
872 | ||
c9d3fa76 JW |
873 | static bool |
874 | comp_is_finalizable (gfc_component *comp) | |
875 | { | |
9b6da3c7 JW |
876 | if (comp->attr.proc_pointer) |
877 | return false; | |
878 | else if (comp->attr.allocatable && comp->ts.type != BT_CLASS) | |
c9d3fa76 JW |
879 | return true; |
880 | else if (comp->ts.type == BT_DERIVED && !comp->attr.pointer | |
881 | && (comp->ts.u.derived->attr.alloc_comp | |
882 | || has_finalizer_component (comp->ts.u.derived) | |
883 | || (comp->ts.u.derived->f2k_derived | |
884 | && comp->ts.u.derived->f2k_derived->finalizers))) | |
885 | return true; | |
886 | else if (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
887 | && CLASS_DATA (comp)->attr.allocatable) | |
888 | return true; | |
889 | else | |
890 | return false; | |
891 | } | |
892 | ||
893 | ||
8e54f139 TB |
894 | /* Call DEALLOCATE for the passed component if it is allocatable, if it is |
895 | neither allocatable nor a pointer but has a finalizer, call it. If it | |
bc7a2337 TB |
896 | is a nonpointer component with allocatable components or has finalizers, walk |
897 | them. Either of them is required; other nonallocatables and pointers aren't | |
8e54f139 TB |
898 | handled gracefully. |
899 | Note: If the component is allocatable, the DEALLOCATE handling takes care | |
900 | of calling the appropriate finalizers, coarray deregistering, and | |
901 | deallocation of allocatable subcomponents. */ | |
902 | ||
903 | static void | |
904 | finalize_component (gfc_expr *expr, gfc_symbol *derived, gfc_component *comp, | |
807b50a7 JW |
905 | gfc_symbol *stat, gfc_symbol *fini_coarray, gfc_code **code, |
906 | gfc_namespace *sub_ns) | |
8e54f139 TB |
907 | { |
908 | gfc_expr *e; | |
909 | gfc_ref *ref; | |
910 | ||
c9d3fa76 | 911 | if (!comp_is_finalizable (comp)) |
8e54f139 TB |
912 | return; |
913 | ||
b81f7b83 TK |
914 | if (comp->finalized) |
915 | return; | |
916 | ||
8e54f139 TB |
917 | e = gfc_copy_expr (expr); |
918 | if (!e->ref) | |
919 | e->ref = ref = gfc_get_ref (); | |
920 | else | |
921 | { | |
922 | for (ref = e->ref; ref->next; ref = ref->next) | |
923 | ; | |
924 | ref->next = gfc_get_ref (); | |
925 | ref = ref->next; | |
926 | } | |
927 | ref->type = REF_COMPONENT; | |
928 | ref->u.c.sym = derived; | |
929 | ref->u.c.component = comp; | |
930 | e->ts = comp->ts; | |
931 | ||
16023efc | 932 | if (comp->attr.dimension || comp->attr.codimension |
8e54f139 | 933 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) |
16023efc TB |
934 | && (CLASS_DATA (comp)->attr.dimension |
935 | || CLASS_DATA (comp)->attr.codimension))) | |
8e54f139 TB |
936 | { |
937 | ref->next = gfc_get_ref (); | |
938 | ref->next->type = REF_ARRAY; | |
8e54f139 TB |
939 | ref->next->u.ar.dimen = 0; |
940 | ref->next->u.ar.as = comp->ts.type == BT_CLASS ? CLASS_DATA (comp)->as | |
941 | : comp->as; | |
942 | e->rank = ref->next->u.ar.as->rank; | |
16023efc | 943 | ref->next->u.ar.type = e->rank ? AR_FULL : AR_ELEMENT; |
8e54f139 TB |
944 | } |
945 | ||
29a7d776 | 946 | /* Call DEALLOCATE (comp, stat=ignore). */ |
8e54f139 TB |
947 | if (comp->attr.allocatable |
948 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
949 | && CLASS_DATA (comp)->attr.allocatable)) | |
950 | { | |
29a7d776 TB |
951 | gfc_code *dealloc, *block = NULL; |
952 | ||
953 | /* Add IF (fini_coarray). */ | |
954 | if (comp->attr.codimension | |
955 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp) | |
652960d1 | 956 | && CLASS_DATA (comp)->attr.codimension)) |
29a7d776 | 957 | { |
11e5274a | 958 | block = gfc_get_code (EXEC_IF); |
29a7d776 TB |
959 | if (*code) |
960 | { | |
961 | (*code)->next = block; | |
962 | (*code) = (*code)->next; | |
963 | } | |
964 | else | |
965 | (*code) = block; | |
966 | ||
11e5274a | 967 | block->block = gfc_get_code (EXEC_IF); |
29a7d776 | 968 | block = block->block; |
29a7d776 TB |
969 | block->expr1 = gfc_lval_expr_from_sym (fini_coarray); |
970 | } | |
8e54f139 | 971 | |
11e5274a | 972 | dealloc = gfc_get_code (EXEC_DEALLOCATE); |
8e54f139 TB |
973 | |
974 | dealloc->ext.alloc.list = gfc_get_alloc (); | |
975 | dealloc->ext.alloc.list->expr = e; | |
29a7d776 | 976 | dealloc->expr1 = gfc_lval_expr_from_sym (stat); |
8e54f139 | 977 | |
807b50a7 JW |
978 | gfc_code *cond = gfc_get_code (EXEC_IF); |
979 | cond->block = gfc_get_code (EXEC_IF); | |
980 | cond->block->expr1 = gfc_get_expr (); | |
981 | cond->block->expr1->expr_type = EXPR_FUNCTION; | |
1011502b | 982 | cond->block->expr1->where = gfc_current_locus; |
807b50a7 JW |
983 | gfc_get_sym_tree ("associated", sub_ns, &cond->block->expr1->symtree, false); |
984 | cond->block->expr1->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
985 | cond->block->expr1->symtree->n.sym->attr.intrinsic = 1; | |
986 | cond->block->expr1->symtree->n.sym->result = cond->block->expr1->symtree->n.sym; | |
987 | gfc_commit_symbol (cond->block->expr1->symtree->n.sym); | |
988 | cond->block->expr1->ts.type = BT_LOGICAL; | |
989 | cond->block->expr1->ts.kind = gfc_default_logical_kind; | |
990 | cond->block->expr1->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_ASSOCIATED); | |
991 | cond->block->expr1->value.function.actual = gfc_get_actual_arglist (); | |
992 | cond->block->expr1->value.function.actual->expr = gfc_copy_expr (expr); | |
993 | cond->block->expr1->value.function.actual->next = gfc_get_actual_arglist (); | |
994 | cond->block->next = dealloc; | |
995 | ||
29a7d776 | 996 | if (block) |
807b50a7 | 997 | block->next = cond; |
29a7d776 | 998 | else if (*code) |
8e54f139 | 999 | { |
807b50a7 | 1000 | (*code)->next = cond; |
8e54f139 TB |
1001 | (*code) = (*code)->next; |
1002 | } | |
1003 | else | |
807b50a7 | 1004 | (*code) = cond; |
8e54f139 TB |
1005 | } |
1006 | else if (comp->ts.type == BT_DERIVED | |
1007 | && comp->ts.u.derived->f2k_derived | |
1008 | && comp->ts.u.derived->f2k_derived->finalizers) | |
1009 | { | |
1010 | /* Call FINAL_WRAPPER (comp); */ | |
1011 | gfc_code *final_wrap; | |
1012 | gfc_symbol *vtab; | |
1013 | gfc_component *c; | |
1014 | ||
1015 | vtab = gfc_find_derived_vtab (comp->ts.u.derived); | |
1016 | for (c = vtab->ts.u.derived->components; c; c = c->next) | |
1017 | if (strcmp (c->name, "_final") == 0) | |
1018 | break; | |
1019 | ||
1020 | gcc_assert (c); | |
11e5274a | 1021 | final_wrap = gfc_get_code (EXEC_CALL); |
8e54f139 TB |
1022 | final_wrap->symtree = c->initializer->symtree; |
1023 | final_wrap->resolved_sym = c->initializer->symtree->n.sym; | |
1024 | final_wrap->ext.actual = gfc_get_actual_arglist (); | |
1025 | final_wrap->ext.actual->expr = e; | |
1026 | ||
1027 | if (*code) | |
1028 | { | |
1029 | (*code)->next = final_wrap; | |
1030 | (*code) = (*code)->next; | |
1031 | } | |
1032 | else | |
1033 | (*code) = final_wrap; | |
1034 | } | |
1035 | else | |
1036 | { | |
1037 | gfc_component *c; | |
1038 | ||
1039 | for (c = comp->ts.u.derived->components; c; c = c->next) | |
807b50a7 JW |
1040 | finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray, code, |
1041 | sub_ns); | |
fc2655fb | 1042 | gfc_free_expr (e); |
8e54f139 | 1043 | } |
b81f7b83 | 1044 | comp->finalized = true; |
8e54f139 TB |
1045 | } |
1046 | ||
1047 | ||
1048 | /* Generate code equivalent to | |
1049 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b | 1050 | + offset, c_ptr), ptr). */ |
8e54f139 TB |
1051 | |
1052 | static gfc_code * | |
9e04287b TB |
1053 | finalization_scalarizer (gfc_symbol *array, gfc_symbol *ptr, |
1054 | gfc_expr *offset, gfc_namespace *sub_ns) | |
8e54f139 TB |
1055 | { |
1056 | gfc_code *block; | |
9e04287b | 1057 | gfc_expr *expr, *expr2; |
8e54f139 TB |
1058 | |
1059 | /* C_F_POINTER(). */ | |
11e5274a | 1060 | block = gfc_get_code (EXEC_CALL); |
8e54f139 TB |
1061 | gfc_get_sym_tree ("c_f_pointer", sub_ns, &block->symtree, true); |
1062 | block->resolved_sym = block->symtree->n.sym; | |
1063 | block->resolved_sym->attr.flavor = FL_PROCEDURE; | |
1064 | block->resolved_sym->attr.intrinsic = 1; | |
cbde6c0f | 1065 | block->resolved_sym->attr.subroutine = 1; |
8e54f139 TB |
1066 | block->resolved_sym->from_intmod = INTMOD_ISO_C_BINDING; |
1067 | block->resolved_sym->intmod_sym_id = ISOCBINDING_F_POINTER; | |
cbde6c0f | 1068 | block->resolved_isym = gfc_intrinsic_subroutine_by_id (GFC_ISYM_C_F_POINTER); |
8e54f139 TB |
1069 | gfc_commit_symbol (block->resolved_sym); |
1070 | ||
1071 | /* C_F_POINTER's first argument: TRANSFER ( <addr>, c_intptr_t). */ | |
1072 | block->ext.actual = gfc_get_actual_arglist (); | |
1073 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1074 | block->ext.actual->next->expr = gfc_get_int_expr (gfc_index_integer_kind, | |
1075 | NULL, 0); | |
1cc0e193 | 1076 | block->ext.actual->next->next = gfc_get_actual_arglist (); /* SIZE. */ |
8e54f139 TB |
1077 | |
1078 | /* The <addr> part: TRANSFER (C_LOC (array), c_intptr_t). */ | |
1079 | ||
8e54f139 TB |
1080 | /* TRANSFER's first argument: C_LOC (array). */ |
1081 | expr = gfc_get_expr (); | |
1082 | expr->expr_type = EXPR_FUNCTION; | |
1083 | gfc_get_sym_tree ("c_loc", sub_ns, &expr->symtree, false); | |
1084 | expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; | |
1085 | expr->symtree->n.sym->intmod_sym_id = ISOCBINDING_LOC; | |
1086 | expr->symtree->n.sym->attr.intrinsic = 1; | |
1087 | expr->symtree->n.sym->from_intmod = INTMOD_ISO_C_BINDING; | |
cbde6c0f | 1088 | expr->value.function.isym = gfc_intrinsic_function_by_id (GFC_ISYM_C_LOC); |
8e54f139 TB |
1089 | expr->value.function.actual = gfc_get_actual_arglist (); |
1090 | expr->value.function.actual->expr | |
1091 | = gfc_lval_expr_from_sym (array); | |
1092 | expr->symtree->n.sym->result = expr->symtree->n.sym; | |
1093 | gfc_commit_symbol (expr->symtree->n.sym); | |
1094 | expr->ts.type = BT_INTEGER; | |
1095 | expr->ts.kind = gfc_index_integer_kind; | |
1011502b | 1096 | expr->where = gfc_current_locus; |
6838c137 TB |
1097 | |
1098 | /* TRANSFER. */ | |
1099 | expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_TRANSFER, "transfer", | |
cbde6c0f | 1100 | gfc_current_locus, 3, expr, |
6838c137 | 1101 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1102 | NULL, 0), NULL); |
6838c137 TB |
1103 | expr2->ts.type = BT_INTEGER; |
1104 | expr2->ts.kind = gfc_index_integer_kind; | |
8e54f139 | 1105 | |
8e54f139 TB |
1106 | /* <array addr> + <offset>. */ |
1107 | block->ext.actual->expr = gfc_get_expr (); | |
1108 | block->ext.actual->expr->expr_type = EXPR_OP; | |
1109 | block->ext.actual->expr->value.op.op = INTRINSIC_PLUS; | |
1110 | block->ext.actual->expr->value.op.op1 = expr2; | |
9e04287b | 1111 | block->ext.actual->expr->value.op.op2 = offset; |
8e54f139 | 1112 | block->ext.actual->expr->ts = expr->ts; |
1011502b | 1113 | block->ext.actual->expr->where = gfc_current_locus; |
8e54f139 TB |
1114 | |
1115 | /* C_F_POINTER's 2nd arg: ptr -- and its absent shape=. */ | |
1116 | block->ext.actual->next = gfc_get_actual_arglist (); | |
1117 | block->ext.actual->next->expr = gfc_lval_expr_from_sym (ptr); | |
1118 | block->ext.actual->next->next = gfc_get_actual_arglist (); | |
1119 | ||
1120 | return block; | |
1121 | } | |
1122 | ||
1123 | ||
9e04287b TB |
1124 | /* Calculates the offset to the (idx+1)th element of an array, taking the |
1125 | stride into account. It generates the code: | |
1126 | offset = 0 | |
1127 | do idx2 = 1, rank | |
1128 | offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) * strides(idx2) | |
1129 | end do | |
1130 | offset = offset * byte_stride. */ | |
1131 | ||
1132 | static gfc_code* | |
1133 | finalization_get_offset (gfc_symbol *idx, gfc_symbol *idx2, gfc_symbol *offset, | |
1134 | gfc_symbol *strides, gfc_symbol *sizes, | |
1135 | gfc_symbol *byte_stride, gfc_expr *rank, | |
1136 | gfc_code *block, gfc_namespace *sub_ns) | |
1137 | { | |
1138 | gfc_iterator *iter; | |
1139 | gfc_expr *expr, *expr2; | |
1140 | ||
1141 | /* offset = 0. */ | |
11e5274a | 1142 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1143 | block = block->next; |
9e04287b TB |
1144 | block->expr1 = gfc_lval_expr_from_sym (offset); |
1145 | block->expr2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1146 | ||
1147 | /* Create loop. */ | |
1148 | iter = gfc_get_iterator (); | |
1149 | iter->var = gfc_lval_expr_from_sym (idx2); | |
1150 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1151 | iter->end = gfc_copy_expr (rank); | |
1152 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 1153 | block->next = gfc_get_code (EXEC_DO); |
9e04287b | 1154 | block = block->next; |
9e04287b | 1155 | block->ext.iterator = iter; |
11e5274a | 1156 | block->block = gfc_get_code (EXEC_DO); |
9e04287b TB |
1157 | |
1158 | /* Loop body: offset = offset + mod (idx, sizes(idx2)) / sizes(idx2-1) | |
1159 | * strides(idx2). */ | |
1160 | ||
1161 | /* mod (idx, sizes(idx2)). */ | |
6838c137 TB |
1162 | expr = gfc_lval_expr_from_sym (sizes); |
1163 | expr->ref = gfc_get_ref (); | |
1164 | expr->ref->type = REF_ARRAY; | |
1165 | expr->ref->u.ar.as = sizes->as; | |
1166 | expr->ref->u.ar.type = AR_ELEMENT; | |
1167 | expr->ref->u.ar.dimen = 1; | |
1168 | expr->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1169 | expr->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1011502b | 1170 | expr->where = sizes->declared_at; |
6838c137 TB |
1171 | |
1172 | expr = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_MOD, "mod", | |
1173 | gfc_current_locus, 2, | |
1174 | gfc_lval_expr_from_sym (idx), expr); | |
9e04287b TB |
1175 | expr->ts = idx->ts; |
1176 | ||
1177 | /* (...) / sizes(idx2-1). */ | |
1178 | expr2 = gfc_get_expr (); | |
1179 | expr2->expr_type = EXPR_OP; | |
1180 | expr2->value.op.op = INTRINSIC_DIVIDE; | |
1181 | expr2->value.op.op1 = expr; | |
1182 | expr2->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1183 | expr2->value.op.op2->ref = gfc_get_ref (); | |
1184 | expr2->value.op.op2->ref->type = REF_ARRAY; | |
1185 | expr2->value.op.op2->ref->u.ar.as = sizes->as; | |
1186 | expr2->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1187 | expr2->value.op.op2->ref->u.ar.dimen = 1; | |
1188 | expr2->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1189 | expr2->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1190 | expr2->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1011502b | 1191 | expr2->value.op.op2->ref->u.ar.start[0]->where = gfc_current_locus; |
9e04287b TB |
1192 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; |
1193 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1194 | = gfc_lval_expr_from_sym (idx2); | |
1195 | expr2->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1196 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1197 | expr2->value.op.op2->ref->u.ar.start[0]->ts | |
1198 | = expr2->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1199 | expr2->ts = idx->ts; | |
1011502b | 1200 | expr2->where = gfc_current_locus; |
9e04287b TB |
1201 | |
1202 | /* ... * strides(idx2). */ | |
1203 | expr = gfc_get_expr (); | |
1204 | expr->expr_type = EXPR_OP; | |
1205 | expr->value.op.op = INTRINSIC_TIMES; | |
1206 | expr->value.op.op1 = expr2; | |
1207 | expr->value.op.op2 = gfc_lval_expr_from_sym (strides); | |
1208 | expr->value.op.op2->ref = gfc_get_ref (); | |
1209 | expr->value.op.op2->ref->type = REF_ARRAY; | |
1210 | expr->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1211 | expr->value.op.op2->ref->u.ar.dimen = 1; | |
1212 | expr->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1213 | expr->value.op.op2->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx2); | |
1214 | expr->value.op.op2->ref->u.ar.as = strides->as; | |
1215 | expr->ts = idx->ts; | |
1011502b | 1216 | expr->where = gfc_current_locus; |
9e04287b TB |
1217 | |
1218 | /* offset = offset + ... */ | |
11e5274a | 1219 | block->block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b TB |
1220 | block->block->next->expr1 = gfc_lval_expr_from_sym (offset); |
1221 | block->block->next->expr2 = gfc_get_expr (); | |
1222 | block->block->next->expr2->expr_type = EXPR_OP; | |
1223 | block->block->next->expr2->value.op.op = INTRINSIC_PLUS; | |
1224 | block->block->next->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1225 | block->block->next->expr2->value.op.op2 = expr; | |
1226 | block->block->next->expr2->ts = idx->ts; | |
1011502b | 1227 | block->block->next->expr2->where = gfc_current_locus; |
9e04287b TB |
1228 | |
1229 | /* After the loop: offset = offset * byte_stride. */ | |
11e5274a | 1230 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1231 | block = block->next; |
9e04287b TB |
1232 | block->expr1 = gfc_lval_expr_from_sym (offset); |
1233 | block->expr2 = gfc_get_expr (); | |
1234 | block->expr2->expr_type = EXPR_OP; | |
1235 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1236 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (offset); | |
1237 | block->expr2->value.op.op2 = gfc_lval_expr_from_sym (byte_stride); | |
1238 | block->expr2->ts = block->expr2->value.op.op1->ts; | |
1011502b | 1239 | block->expr2->where = gfc_current_locus; |
9e04287b TB |
1240 | return block; |
1241 | } | |
1242 | ||
1243 | ||
29a7d776 TB |
1244 | /* Insert code of the following form: |
1245 | ||
9e04287b TB |
1246 | block |
1247 | integer(c_intptr_t) :: i | |
1248 | ||
1249 | if ((byte_stride == STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1250 | && (is_contiguous || !final_rank3->attr.contiguous | |
1251 | || final_rank3->as->type != AS_ASSUMED_SHAPE)) | |
1252 | || 0 == STORAGE_SIZE (array)) then | |
1253 | call final_rank3 (array) | |
1254 | else | |
1255 | block | |
1256 | integer(c_intptr_t) :: offset, j | |
1257 | type(t) :: tmp(shape (array)) | |
1258 | ||
1259 | do i = 0, size (array)-1 | |
1260 | offset = obtain_offset(i, strides, sizes, byte_stride) | |
1261 | addr = transfer (c_loc (array), addr) + offset | |
1262 | call c_f_pointer (transfer (addr, cptr), ptr) | |
1263 | ||
1264 | addr = transfer (c_loc (tmp), addr) | |
1265 | + i * STORAGE_SIZE (array)/NUMERIC_STORAGE_SIZE | |
1266 | call c_f_pointer (transfer (addr, cptr), ptr2) | |
1267 | ptr2 = ptr | |
1268 | end do | |
1269 | call final_rank3 (tmp) | |
1270 | end block | |
1271 | end if | |
1272 | block */ | |
29a7d776 TB |
1273 | |
1274 | static void | |
1275 | finalizer_insert_packed_call (gfc_code *block, gfc_finalizer *fini, | |
9e04287b | 1276 | gfc_symbol *array, gfc_symbol *byte_stride, |
29a7d776 | 1277 | gfc_symbol *idx, gfc_symbol *ptr, |
6838c137 | 1278 | gfc_symbol *nelem, |
9e04287b TB |
1279 | gfc_symbol *strides, gfc_symbol *sizes, |
1280 | gfc_symbol *idx2, gfc_symbol *offset, | |
1281 | gfc_symbol *is_contiguous, gfc_expr *rank, | |
29a7d776 TB |
1282 | gfc_namespace *sub_ns) |
1283 | { | |
1284 | gfc_symbol *tmp_array, *ptr2; | |
9e04287b | 1285 | gfc_expr *size_expr, *offset2, *expr; |
29a7d776 TB |
1286 | gfc_namespace *ns; |
1287 | gfc_iterator *iter; | |
9e04287b | 1288 | gfc_code *block2; |
29a7d776 TB |
1289 | int i; |
1290 | ||
11e5274a | 1291 | block->next = gfc_get_code (EXEC_IF); |
29a7d776 | 1292 | block = block->next; |
29a7d776 | 1293 | |
11e5274a | 1294 | block->block = gfc_get_code (EXEC_IF); |
29a7d776 | 1295 | block = block->block; |
29a7d776 TB |
1296 | |
1297 | /* size_expr = STORAGE_SIZE (...) / NUMERIC_STORAGE_SIZE. */ | |
1298 | size_expr = gfc_get_expr (); | |
1299 | size_expr->where = gfc_current_locus; | |
1300 | size_expr->expr_type = EXPR_OP; | |
1301 | size_expr->value.op.op = INTRINSIC_DIVIDE; | |
1302 | ||
1303 | /* STORAGE_SIZE (array,kind=c_intptr_t). */ | |
6838c137 TB |
1304 | size_expr->value.op.op1 |
1305 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STORAGE_SIZE, | |
1306 | "storage_size", gfc_current_locus, 2, | |
cbde6c0f | 1307 | gfc_lval_expr_from_sym (array), |
6838c137 | 1308 | gfc_get_int_expr (gfc_index_integer_kind, |
cbde6c0f | 1309 | NULL, 0)); |
29a7d776 TB |
1310 | |
1311 | /* NUMERIC_STORAGE_SIZE. */ | |
1312 | size_expr->value.op.op2 = gfc_get_int_expr (gfc_index_integer_kind, NULL, | |
1313 | gfc_character_storage_size); | |
1314 | size_expr->value.op.op1->ts = size_expr->value.op.op2->ts; | |
1315 | size_expr->ts = size_expr->value.op.op1->ts; | |
1316 | ||
9e04287b TB |
1317 | /* IF condition: (stride == size_expr |
1318 | && ((fini's as->ASSUMED_SIZE && !fini's attr.contiguous) | |
1319 | || is_contiguous) | |
1320 | || 0 == size_expr. */ | |
29a7d776 | 1321 | block->expr1 = gfc_get_expr (); |
29a7d776 | 1322 | block->expr1->ts.type = BT_LOGICAL; |
9e04287b | 1323 | block->expr1->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1324 | block->expr1->expr_type = EXPR_OP; |
1325 | block->expr1->where = gfc_current_locus; | |
1326 | ||
1327 | block->expr1->value.op.op = INTRINSIC_OR; | |
1328 | ||
9e04287b TB |
1329 | /* byte_stride == size_expr */ |
1330 | expr = gfc_get_expr (); | |
1331 | expr->ts.type = BT_LOGICAL; | |
1332 | expr->ts.kind = gfc_default_logical_kind; | |
1333 | expr->expr_type = EXPR_OP; | |
1334 | expr->where = gfc_current_locus; | |
1335 | expr->value.op.op = INTRINSIC_EQ; | |
1336 | expr->value.op.op1 | |
1337 | = gfc_lval_expr_from_sym (byte_stride); | |
1338 | expr->value.op.op2 = size_expr; | |
1339 | ||
cbde6c0f | 1340 | /* If strides aren't allowed (not assumed shape or CONTIGUOUS), |
9e04287b | 1341 | add is_contiguous check. */ |
cbde6c0f | 1342 | |
9e04287b TB |
1343 | if (fini->proc_tree->n.sym->formal->sym->as->type != AS_ASSUMED_SHAPE |
1344 | || fini->proc_tree->n.sym->formal->sym->attr.contiguous) | |
1345 | { | |
1346 | gfc_expr *expr2; | |
1347 | expr2 = gfc_get_expr (); | |
1348 | expr2->ts.type = BT_LOGICAL; | |
1349 | expr2->ts.kind = gfc_default_logical_kind; | |
1350 | expr2->expr_type = EXPR_OP; | |
1351 | expr2->where = gfc_current_locus; | |
1352 | expr2->value.op.op = INTRINSIC_AND; | |
1353 | expr2->value.op.op1 = expr; | |
1354 | expr2->value.op.op2 = gfc_lval_expr_from_sym (is_contiguous); | |
1355 | expr = expr2; | |
1356 | } | |
1357 | ||
1358 | block->expr1->value.op.op1 = expr; | |
29a7d776 TB |
1359 | |
1360 | /* 0 == size_expr */ | |
1361 | block->expr1->value.op.op2 = gfc_get_expr (); | |
29a7d776 | 1362 | block->expr1->value.op.op2->ts.type = BT_LOGICAL; |
9e04287b | 1363 | block->expr1->value.op.op2->ts.kind = gfc_default_logical_kind; |
29a7d776 TB |
1364 | block->expr1->value.op.op2->expr_type = EXPR_OP; |
1365 | block->expr1->value.op.op2->where = gfc_current_locus; | |
1366 | block->expr1->value.op.op2->value.op.op = INTRINSIC_EQ; | |
1367 | block->expr1->value.op.op2->value.op.op1 = | |
1368 | gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1369 | block->expr1->value.op.op2->value.op.op2 = gfc_copy_expr (size_expr); | |
1370 | ||
1371 | /* IF body: call final subroutine. */ | |
11e5274a | 1372 | block->next = gfc_get_code (EXEC_CALL); |
29a7d776 TB |
1373 | block->next->symtree = fini->proc_tree; |
1374 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
1375 | block->next->ext.actual = gfc_get_actual_arglist (); | |
1376 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
bf9f15ee PT |
1377 | block->next->ext.actual->next = gfc_get_actual_arglist (); |
1378 | block->next->ext.actual->next->expr = gfc_copy_expr (size_expr); | |
29a7d776 TB |
1379 | |
1380 | /* ELSE. */ | |
1381 | ||
11e5274a | 1382 | block->block = gfc_get_code (EXEC_IF); |
29a7d776 | 1383 | block = block->block; |
29a7d776 | 1384 | |
11e5274a JW |
1385 | /* BLOCK ... END BLOCK. */ |
1386 | block->next = gfc_get_code (EXEC_BLOCK); | |
29a7d776 TB |
1387 | block = block->next; |
1388 | ||
29a7d776 TB |
1389 | ns = gfc_build_block_ns (sub_ns); |
1390 | block->ext.block.ns = ns; | |
1391 | block->ext.block.assoc = NULL; | |
1392 | ||
1393 | gfc_get_symbol ("ptr2", ns, &ptr2); | |
1394 | ptr2->ts.type = BT_DERIVED; | |
1395 | ptr2->ts.u.derived = array->ts.u.derived; | |
1396 | ptr2->attr.flavor = FL_VARIABLE; | |
1397 | ptr2->attr.pointer = 1; | |
1398 | ptr2->attr.artificial = 1; | |
1399 | gfc_set_sym_referenced (ptr2); | |
1400 | gfc_commit_symbol (ptr2); | |
1401 | ||
1402 | gfc_get_symbol ("tmp_array", ns, &tmp_array); | |
1403 | tmp_array->ts.type = BT_DERIVED; | |
1404 | tmp_array->ts.u.derived = array->ts.u.derived; | |
1405 | tmp_array->attr.flavor = FL_VARIABLE; | |
29a7d776 TB |
1406 | tmp_array->attr.dimension = 1; |
1407 | tmp_array->attr.artificial = 1; | |
1408 | tmp_array->as = gfc_get_array_spec(); | |
1409 | tmp_array->attr.intent = INTENT_INOUT; | |
1410 | tmp_array->as->type = AS_EXPLICIT; | |
1411 | tmp_array->as->rank = fini->proc_tree->n.sym->formal->sym->as->rank; | |
1412 | ||
1413 | for (i = 0; i < tmp_array->as->rank; i++) | |
1414 | { | |
1415 | gfc_expr *shape_expr; | |
1416 | tmp_array->as->lower[i] = gfc_get_int_expr (gfc_default_integer_kind, | |
1417 | NULL, 1); | |
cbde6c0f | 1418 | /* SIZE (array, dim=i+1, kind=gfc_index_integer_kind). */ |
6838c137 TB |
1419 | shape_expr |
1420 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1421 | gfc_current_locus, 3, | |
1422 | gfc_lval_expr_from_sym (array), | |
1423 | gfc_get_int_expr (gfc_default_integer_kind, | |
1424 | NULL, i+1), | |
1425 | gfc_get_int_expr (gfc_default_integer_kind, | |
cbde6c0f TB |
1426 | NULL, |
1427 | gfc_index_integer_kind)); | |
1428 | shape_expr->ts.kind = gfc_index_integer_kind; | |
29a7d776 TB |
1429 | tmp_array->as->upper[i] = shape_expr; |
1430 | } | |
1431 | gfc_set_sym_referenced (tmp_array); | |
1432 | gfc_commit_symbol (tmp_array); | |
1433 | ||
1434 | /* Create loop. */ | |
1435 | iter = gfc_get_iterator (); | |
1436 | iter->var = gfc_lval_expr_from_sym (idx); | |
1437 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1438 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1439 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1440 | ||
11e5274a | 1441 | block = gfc_get_code (EXEC_DO); |
29a7d776 | 1442 | ns->code = block; |
29a7d776 | 1443 | block->ext.iterator = iter; |
11e5274a | 1444 | block->block = gfc_get_code (EXEC_DO); |
29a7d776 | 1445 | |
9e04287b TB |
1446 | /* Offset calculation for the new array: idx * size of type (in bytes). */ |
1447 | offset2 = gfc_get_expr (); | |
9e04287b | 1448 | offset2->expr_type = EXPR_OP; |
1011502b | 1449 | offset2->where = gfc_current_locus; |
9e04287b TB |
1450 | offset2->value.op.op = INTRINSIC_TIMES; |
1451 | offset2->value.op.op1 = gfc_lval_expr_from_sym (idx); | |
1452 | offset2->value.op.op2 = gfc_copy_expr (size_expr); | |
1453 | offset2->ts = byte_stride->ts; | |
1454 | ||
1455 | /* Offset calculation of "array". */ | |
1456 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1457 | byte_stride, rank, block->block, sub_ns); | |
1458 | ||
29a7d776 TB |
1459 | /* Create code for |
1460 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
1461 | + idx * stride, c_ptr), ptr). */ | |
9e04287b TB |
1462 | block2->next = finalization_scalarizer (array, ptr, |
1463 | gfc_lval_expr_from_sym (offset), | |
1464 | sub_ns); | |
1465 | block2 = block2->next; | |
1466 | block2->next = finalization_scalarizer (tmp_array, ptr2, offset2, sub_ns); | |
cbde6c0f | 1467 | block2 = block2->next; |
9e04287b | 1468 | |
29a7d776 | 1469 | /* ptr2 = ptr. */ |
11e5274a | 1470 | block2->next = gfc_get_code (EXEC_ASSIGN); |
cbde6c0f | 1471 | block2 = block2->next; |
cbde6c0f TB |
1472 | block2->expr1 = gfc_lval_expr_from_sym (ptr2); |
1473 | block2->expr2 = gfc_lval_expr_from_sym (ptr); | |
29a7d776 | 1474 | |
1cc0e193 | 1475 | /* Call now the user's final subroutine. */ |
11e5274a | 1476 | block->next = gfc_get_code (EXEC_CALL); |
29a7d776 | 1477 | block = block->next; |
29a7d776 TB |
1478 | block->symtree = fini->proc_tree; |
1479 | block->resolved_sym = fini->proc_tree->n.sym; | |
1480 | block->ext.actual = gfc_get_actual_arglist (); | |
1481 | block->ext.actual->expr = gfc_lval_expr_from_sym (tmp_array); | |
1482 | ||
1483 | if (fini->proc_tree->n.sym->formal->sym->attr.intent == INTENT_IN) | |
1484 | return; | |
1485 | ||
1486 | /* Copy back. */ | |
1487 | ||
1488 | /* Loop. */ | |
1489 | iter = gfc_get_iterator (); | |
1490 | iter->var = gfc_lval_expr_from_sym (idx); | |
1491 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1492 | iter->end = gfc_lval_expr_from_sym (nelem); | |
1493 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1494 | ||
11e5274a | 1495 | block->next = gfc_get_code (EXEC_DO); |
29a7d776 | 1496 | block = block->next; |
29a7d776 | 1497 | block->ext.iterator = iter; |
11e5274a | 1498 | block->block = gfc_get_code (EXEC_DO); |
29a7d776 | 1499 | |
9e04287b TB |
1500 | /* Offset calculation of "array". */ |
1501 | block2 = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
1502 | byte_stride, rank, block->block, sub_ns); | |
1503 | ||
29a7d776 TB |
1504 | /* Create code for |
1505 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
1506 | + offset, c_ptr), ptr). */ |
1507 | block2->next = finalization_scalarizer (array, ptr, | |
1508 | gfc_lval_expr_from_sym (offset), | |
1509 | sub_ns); | |
1510 | block2 = block2->next; | |
cbde6c0f TB |
1511 | block2->next = finalization_scalarizer (tmp_array, ptr2, |
1512 | gfc_copy_expr (offset2), sub_ns); | |
9e04287b TB |
1513 | block2 = block2->next; |
1514 | ||
29a7d776 | 1515 | /* ptr = ptr2. */ |
11e5274a | 1516 | block2->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b TB |
1517 | block2->next->expr1 = gfc_lval_expr_from_sym (ptr); |
1518 | block2->next->expr2 = gfc_lval_expr_from_sym (ptr2); | |
29a7d776 TB |
1519 | } |
1520 | ||
1521 | ||
8e54f139 TB |
1522 | /* Generate the finalization/polymorphic freeing wrapper subroutine for the |
1523 | derived type "derived". The function first calls the approriate FINAL | |
1524 | subroutine, then it DEALLOCATEs (finalizes/frees) the allocatable | |
1525 | components (but not the inherited ones). Last, it calls the wrapper | |
1526 | subroutine of the parent. The generated wrapper procedure takes as argument | |
1527 | an assumed-rank array. | |
1528 | If neither allocatable components nor FINAL subroutines exists, the vtab | |
29a7d776 TB |
1529 | will contain a NULL pointer. |
1530 | The generated function has the form | |
1531 | _final(assumed-rank array, stride, skip_corarray) | |
1532 | where the array has to be contiguous (except of the lowest dimension). The | |
1533 | stride (in bytes) is used to allow different sizes for ancestor types by | |
1534 | skipping over the additionally added components in the scalarizer. If | |
1535 | "fini_coarray" is false, coarray components are not finalized to allow for | |
1536 | the correct semantic with intrinsic assignment. */ | |
8e54f139 TB |
1537 | |
1538 | static void | |
1539 | generate_finalization_wrapper (gfc_symbol *derived, gfc_namespace *ns, | |
1540 | const char *tname, gfc_component *vtab_final) | |
1541 | { | |
9e04287b TB |
1542 | gfc_symbol *final, *array, *fini_coarray, *byte_stride, *sizes, *strides; |
1543 | gfc_symbol *ptr = NULL, *idx, *idx2, *is_contiguous, *offset, *nelem; | |
8e54f139 TB |
1544 | gfc_component *comp; |
1545 | gfc_namespace *sub_ns; | |
9e04287b | 1546 | gfc_code *last_code, *block; |
2004617a | 1547 | char *name; |
8e54f139 | 1548 | bool finalizable_comp = false; |
29a7d776 | 1549 | bool expr_null_wrapper = false; |
9e04287b TB |
1550 | gfc_expr *ancestor_wrapper = NULL, *rank; |
1551 | gfc_iterator *iter; | |
8e54f139 | 1552 | |
7017a7a9 TB |
1553 | if (derived->attr.unlimited_polymorphic) |
1554 | { | |
1555 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1556 | return; | |
1557 | } | |
1558 | ||
1cc0e193 | 1559 | /* Search for the ancestor's finalizers. */ |
8e54f139 TB |
1560 | if (derived->attr.extension && derived->components |
1561 | && (!derived->components->ts.u.derived->attr.abstract | |
1562 | || has_finalizer_component (derived))) | |
1563 | { | |
1564 | gfc_symbol *vtab; | |
1565 | gfc_component *comp; | |
1566 | ||
1567 | vtab = gfc_find_derived_vtab (derived->components->ts.u.derived); | |
1568 | for (comp = vtab->ts.u.derived->components; comp; comp = comp->next) | |
1569 | if (comp->name[0] == '_' && comp->name[1] == 'f') | |
1570 | { | |
1571 | ancestor_wrapper = comp->initializer; | |
1572 | break; | |
1573 | } | |
1574 | } | |
1575 | ||
29a7d776 TB |
1576 | /* No wrapper of the ancestor and no own FINAL subroutines and allocatable |
1577 | components: Return a NULL() expression; we defer this a bit to have have | |
1578 | an interface declaration. */ | |
8e54f139 TB |
1579 | if ((!ancestor_wrapper || ancestor_wrapper->expr_type == EXPR_NULL) |
1580 | && !derived->attr.alloc_comp | |
1581 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers) | |
1582 | && !has_finalizer_component (derived)) | |
29a7d776 TB |
1583 | expr_null_wrapper = true; |
1584 | else | |
1585 | /* Check whether there are new allocatable components. */ | |
1586 | for (comp = derived->components; comp; comp = comp->next) | |
1587 | { | |
1588 | if (comp == derived->components && derived->attr.extension | |
1589 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
8e54f139 TB |
1590 | continue; |
1591 | ||
c9d3fa76 | 1592 | finalizable_comp |= comp_is_finalizable (comp); |
29a7d776 | 1593 | } |
8e54f139 TB |
1594 | |
1595 | /* If there is no new finalizer and no new allocatable, return with | |
1596 | an expr to the ancestor's one. */ | |
29a7d776 TB |
1597 | if (!expr_null_wrapper && !finalizable_comp |
1598 | && (!derived->f2k_derived || !derived->f2k_derived->finalizers)) | |
8e54f139 | 1599 | { |
29a7d776 TB |
1600 | gcc_assert (ancestor_wrapper && ancestor_wrapper->ref == NULL |
1601 | && ancestor_wrapper->expr_type == EXPR_VARIABLE); | |
8e54f139 | 1602 | vtab_final->initializer = gfc_copy_expr (ancestor_wrapper); |
29a7d776 | 1603 | vtab_final->ts.interface = vtab_final->initializer->symtree->n.sym; |
8e54f139 TB |
1604 | return; |
1605 | } | |
1606 | ||
1607 | /* We now create a wrapper, which does the following: | |
1608 | 1. Call the suitable finalization subroutine for this type | |
1609 | 2. Loop over all noninherited allocatable components and noninherited | |
1610 | components with allocatable components and DEALLOCATE those; this will | |
1611 | take care of finalizers, coarray deregistering and allocatable | |
1612 | nested components. | |
1613 | 3. Call the ancestor's finalizer. */ | |
1614 | ||
1615 | /* Declare the wrapper function; it takes an assumed-rank array | |
1cc0e193 | 1616 | and a VALUE logical as arguments. */ |
8e54f139 TB |
1617 | |
1618 | /* Set up the namespace. */ | |
1619 | sub_ns = gfc_get_namespace (ns, 0); | |
1620 | sub_ns->sibling = ns->contained; | |
29a7d776 TB |
1621 | if (!expr_null_wrapper) |
1622 | ns->contained = sub_ns; | |
8e54f139 TB |
1623 | sub_ns->resolved = 1; |
1624 | ||
1625 | /* Set up the procedure symbol. */ | |
2004617a | 1626 | name = xasprintf ("__final_%s", tname); |
8e54f139 TB |
1627 | gfc_get_symbol (name, sub_ns, &final); |
1628 | sub_ns->proc_name = final; | |
1629 | final->attr.flavor = FL_PROCEDURE; | |
29a7d776 TB |
1630 | final->attr.function = 1; |
1631 | final->attr.pure = 0; | |
43076492 | 1632 | final->attr.recursive = 1; |
29a7d776 TB |
1633 | final->result = final; |
1634 | final->ts.type = BT_INTEGER; | |
1635 | final->ts.kind = 4; | |
8e54f139 | 1636 | final->attr.artificial = 1; |
2ab320ad | 1637 | final->attr.always_explicit = 1; |
29a7d776 | 1638 | final->attr.if_source = expr_null_wrapper ? IFSRC_IFBODY : IFSRC_DECL; |
8e54f139 TB |
1639 | if (ns->proc_name->attr.flavor == FL_MODULE) |
1640 | final->module = ns->proc_name->name; | |
1641 | gfc_set_sym_referenced (final); | |
29a7d776 | 1642 | gfc_commit_symbol (final); |
8e54f139 TB |
1643 | |
1644 | /* Set up formal argument. */ | |
1645 | gfc_get_symbol ("array", sub_ns, &array); | |
1646 | array->ts.type = BT_DERIVED; | |
1647 | array->ts.u.derived = derived; | |
1648 | array->attr.flavor = FL_VARIABLE; | |
1649 | array->attr.dummy = 1; | |
1650 | array->attr.contiguous = 1; | |
1651 | array->attr.dimension = 1; | |
1652 | array->attr.artificial = 1; | |
1653 | array->as = gfc_get_array_spec(); | |
1654 | array->as->type = AS_ASSUMED_RANK; | |
1655 | array->as->rank = -1; | |
1656 | array->attr.intent = INTENT_INOUT; | |
1657 | gfc_set_sym_referenced (array); | |
1658 | final->formal = gfc_get_formal_arglist (); | |
1659 | final->formal->sym = array; | |
1660 | gfc_commit_symbol (array); | |
1661 | ||
29a7d776 | 1662 | /* Set up formal argument. */ |
9e04287b TB |
1663 | gfc_get_symbol ("byte_stride", sub_ns, &byte_stride); |
1664 | byte_stride->ts.type = BT_INTEGER; | |
1665 | byte_stride->ts.kind = gfc_index_integer_kind; | |
1666 | byte_stride->attr.flavor = FL_VARIABLE; | |
1667 | byte_stride->attr.dummy = 1; | |
1668 | byte_stride->attr.value = 1; | |
1669 | byte_stride->attr.artificial = 1; | |
1670 | gfc_set_sym_referenced (byte_stride); | |
29a7d776 | 1671 | final->formal->next = gfc_get_formal_arglist (); |
9e04287b TB |
1672 | final->formal->next->sym = byte_stride; |
1673 | gfc_commit_symbol (byte_stride); | |
29a7d776 TB |
1674 | |
1675 | /* Set up formal argument. */ | |
1676 | gfc_get_symbol ("fini_coarray", sub_ns, &fini_coarray); | |
1677 | fini_coarray->ts.type = BT_LOGICAL; | |
9e04287b | 1678 | fini_coarray->ts.kind = 1; |
29a7d776 TB |
1679 | fini_coarray->attr.flavor = FL_VARIABLE; |
1680 | fini_coarray->attr.dummy = 1; | |
1681 | fini_coarray->attr.value = 1; | |
1682 | fini_coarray->attr.artificial = 1; | |
1683 | gfc_set_sym_referenced (fini_coarray); | |
1684 | final->formal->next->next = gfc_get_formal_arglist (); | |
1685 | final->formal->next->next->sym = fini_coarray; | |
1686 | gfc_commit_symbol (fini_coarray); | |
1687 | ||
1688 | /* Return with a NULL() expression but with an interface which has | |
1689 | the formal arguments. */ | |
1690 | if (expr_null_wrapper) | |
1691 | { | |
1692 | vtab_final->initializer = gfc_get_null_expr (NULL); | |
1693 | vtab_final->ts.interface = final; | |
1694 | return; | |
1695 | } | |
1696 | ||
9e04287b TB |
1697 | /* Local variables. */ |
1698 | ||
1699 | gfc_get_symbol ("idx", sub_ns, &idx); | |
1700 | idx->ts.type = BT_INTEGER; | |
1701 | idx->ts.kind = gfc_index_integer_kind; | |
1702 | idx->attr.flavor = FL_VARIABLE; | |
1703 | idx->attr.artificial = 1; | |
1704 | gfc_set_sym_referenced (idx); | |
1705 | gfc_commit_symbol (idx); | |
1706 | ||
1707 | gfc_get_symbol ("idx2", sub_ns, &idx2); | |
1708 | idx2->ts.type = BT_INTEGER; | |
1709 | idx2->ts.kind = gfc_index_integer_kind; | |
1710 | idx2->attr.flavor = FL_VARIABLE; | |
1711 | idx2->attr.artificial = 1; | |
1712 | gfc_set_sym_referenced (idx2); | |
1713 | gfc_commit_symbol (idx2); | |
1714 | ||
1715 | gfc_get_symbol ("offset", sub_ns, &offset); | |
1716 | offset->ts.type = BT_INTEGER; | |
1717 | offset->ts.kind = gfc_index_integer_kind; | |
1718 | offset->attr.flavor = FL_VARIABLE; | |
1719 | offset->attr.artificial = 1; | |
1720 | gfc_set_sym_referenced (offset); | |
1721 | gfc_commit_symbol (offset); | |
1722 | ||
1723 | /* Create RANK expression. */ | |
6838c137 TB |
1724 | rank = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_RANK, "rank", |
1725 | gfc_current_locus, 1, | |
1726 | gfc_lval_expr_from_sym (array)); | |
16023efc TB |
1727 | if (rank->ts.kind != idx->ts.kind) |
1728 | gfc_convert_type_warn (rank, &idx->ts, 2, 0); | |
9e04287b TB |
1729 | |
1730 | /* Create is_contiguous variable. */ | |
1731 | gfc_get_symbol ("is_contiguous", sub_ns, &is_contiguous); | |
1732 | is_contiguous->ts.type = BT_LOGICAL; | |
1733 | is_contiguous->ts.kind = gfc_default_logical_kind; | |
1734 | is_contiguous->attr.flavor = FL_VARIABLE; | |
1735 | is_contiguous->attr.artificial = 1; | |
1736 | gfc_set_sym_referenced (is_contiguous); | |
1737 | gfc_commit_symbol (is_contiguous); | |
1738 | ||
1739 | /* Create "sizes(0..rank)" variable, which contains the multiplied | |
1740 | up extent of the dimensions, i.e. sizes(0) = 1, sizes(1) = extent(dim=1), | |
1741 | sizes(2) = sizes(1) * extent(dim=2) etc. */ | |
1742 | gfc_get_symbol ("sizes", sub_ns, &sizes); | |
1743 | sizes->ts.type = BT_INTEGER; | |
1744 | sizes->ts.kind = gfc_index_integer_kind; | |
1745 | sizes->attr.flavor = FL_VARIABLE; | |
1746 | sizes->attr.dimension = 1; | |
1747 | sizes->attr.artificial = 1; | |
1748 | sizes->as = gfc_get_array_spec(); | |
1749 | sizes->attr.intent = INTENT_INOUT; | |
1750 | sizes->as->type = AS_EXPLICIT; | |
1751 | sizes->as->rank = 1; | |
1752 | sizes->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1753 | sizes->as->upper[0] = gfc_copy_expr (rank); | |
1754 | gfc_set_sym_referenced (sizes); | |
1755 | gfc_commit_symbol (sizes); | |
1756 | ||
1757 | /* Create "strides(1..rank)" variable, which contains the strides per | |
1758 | dimension. */ | |
1759 | gfc_get_symbol ("strides", sub_ns, &strides); | |
1760 | strides->ts.type = BT_INTEGER; | |
1761 | strides->ts.kind = gfc_index_integer_kind; | |
1762 | strides->attr.flavor = FL_VARIABLE; | |
1763 | strides->attr.dimension = 1; | |
1764 | strides->attr.artificial = 1; | |
1765 | strides->as = gfc_get_array_spec(); | |
1766 | strides->attr.intent = INTENT_INOUT; | |
1767 | strides->as->type = AS_EXPLICIT; | |
1768 | strides->as->rank = 1; | |
1769 | strides->as->lower[0] = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1770 | strides->as->upper[0] = gfc_copy_expr (rank); | |
1771 | gfc_set_sym_referenced (strides); | |
1772 | gfc_commit_symbol (strides); | |
1773 | ||
29a7d776 TB |
1774 | |
1775 | /* Set return value to 0. */ | |
11e5274a | 1776 | last_code = gfc_get_code (EXEC_ASSIGN); |
29a7d776 TB |
1777 | last_code->expr1 = gfc_lval_expr_from_sym (final); |
1778 | last_code->expr2 = gfc_get_int_expr (4, NULL, 0); | |
1779 | sub_ns->code = last_code; | |
1780 | ||
9e04287b | 1781 | /* Set: is_contiguous = .true. */ |
11e5274a | 1782 | last_code->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1783 | last_code = last_code->next; |
9e04287b TB |
1784 | last_code->expr1 = gfc_lval_expr_from_sym (is_contiguous); |
1785 | last_code->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1786 | &gfc_current_locus, true); | |
1787 | ||
1788 | /* Set: sizes(0) = 1. */ | |
11e5274a | 1789 | last_code->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1790 | last_code = last_code->next; |
9e04287b TB |
1791 | last_code->expr1 = gfc_lval_expr_from_sym (sizes); |
1792 | last_code->expr1->ref = gfc_get_ref (); | |
1793 | last_code->expr1->ref->type = REF_ARRAY; | |
1794 | last_code->expr1->ref->u.ar.type = AR_ELEMENT; | |
1795 | last_code->expr1->ref->u.ar.dimen = 1; | |
1796 | last_code->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1797 | last_code->expr1->ref->u.ar.start[0] | |
1798 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
1799 | last_code->expr1->ref->u.ar.as = sizes->as; | |
1800 | last_code->expr2 = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); | |
1801 | ||
1802 | /* Create: | |
1803 | DO idx = 1, rank | |
1804 | strides(idx) = _F._stride (array, dim=idx) | |
1805 | sizes(idx) = sizes(i-1) * size(array, dim=idx, kind=index_kind) | |
524af0d6 | 1806 | if (strides (idx) /= sizes(i-1)) is_contiguous = .false. |
9e04287b TB |
1807 | END DO. */ |
1808 | ||
1809 | /* Create loop. */ | |
1810 | iter = gfc_get_iterator (); | |
1811 | iter->var = gfc_lval_expr_from_sym (idx); | |
1812 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1813 | iter->end = gfc_copy_expr (rank); | |
1814 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 1815 | last_code->next = gfc_get_code (EXEC_DO); |
9e04287b | 1816 | last_code = last_code->next; |
9e04287b | 1817 | last_code->ext.iterator = iter; |
11e5274a | 1818 | last_code->block = gfc_get_code (EXEC_DO); |
9e04287b | 1819 | |
1cc0e193 | 1820 | /* strides(idx) = _F._stride(array,dim=idx). */ |
11e5274a | 1821 | last_code->block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1822 | block = last_code->block->next; |
9e04287b TB |
1823 | |
1824 | block->expr1 = gfc_lval_expr_from_sym (strides); | |
1825 | block->expr1->ref = gfc_get_ref (); | |
1826 | block->expr1->ref->type = REF_ARRAY; | |
1827 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1828 | block->expr1->ref->u.ar.dimen = 1; | |
1829 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1830 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1831 | block->expr1->ref->u.ar.as = strides->as; | |
1832 | ||
6838c137 TB |
1833 | block->expr2 = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_STRIDE, "stride", |
1834 | gfc_current_locus, 2, | |
1835 | gfc_lval_expr_from_sym (array), | |
1836 | gfc_lval_expr_from_sym (idx)); | |
9e04287b | 1837 | |
1cc0e193 | 1838 | /* sizes(idx) = sizes(idx-1) * size(array,dim=idx, kind=index_kind). */ |
11e5274a | 1839 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1840 | block = block->next; |
9e04287b | 1841 | |
1cc0e193 | 1842 | /* sizes(idx) = ... */ |
9e04287b TB |
1843 | block->expr1 = gfc_lval_expr_from_sym (sizes); |
1844 | block->expr1->ref = gfc_get_ref (); | |
1845 | block->expr1->ref->type = REF_ARRAY; | |
1846 | block->expr1->ref->u.ar.type = AR_ELEMENT; | |
1847 | block->expr1->ref->u.ar.dimen = 1; | |
1848 | block->expr1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1849 | block->expr1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1850 | block->expr1->ref->u.ar.as = sizes->as; | |
1851 | ||
1852 | block->expr2 = gfc_get_expr (); | |
1853 | block->expr2->expr_type = EXPR_OP; | |
1854 | block->expr2->value.op.op = INTRINSIC_TIMES; | |
1011502b | 1855 | block->expr2->where = gfc_current_locus; |
9e04287b | 1856 | |
1cc0e193 | 1857 | /* sizes(idx-1). */ |
9e04287b TB |
1858 | block->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1859 | block->expr2->value.op.op1->ref = gfc_get_ref (); | |
1860 | block->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1861 | block->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
1862 | block->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1863 | block->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1864 | block->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1865 | block->expr2->value.op.op1->ref->u.ar.start[0] = gfc_get_expr (); | |
1866 | block->expr2->value.op.op1->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1011502b | 1867 | block->expr2->value.op.op1->ref->u.ar.start[0]->where = gfc_current_locus; |
9e04287b TB |
1868 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; |
1869 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1 | |
1870 | = gfc_lval_expr_from_sym (idx); | |
1871 | block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op2 | |
1872 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1873 | block->expr2->value.op.op1->ref->u.ar.start[0]->ts | |
1874 | = block->expr2->value.op.op1->ref->u.ar.start[0]->value.op.op1->ts; | |
1875 | ||
1876 | /* size(array, dim=idx, kind=index_kind). */ | |
6838c137 TB |
1877 | block->expr2->value.op.op2 |
1878 | = gfc_build_intrinsic_call (sub_ns, GFC_ISYM_SIZE, "size", | |
1879 | gfc_current_locus, 3, | |
1880 | gfc_lval_expr_from_sym (array), | |
1881 | gfc_lval_expr_from_sym (idx), | |
1882 | gfc_get_int_expr (gfc_index_integer_kind, | |
cbde6c0f TB |
1883 | NULL, |
1884 | gfc_index_integer_kind)); | |
1885 | block->expr2->value.op.op2->ts.kind = gfc_index_integer_kind; | |
9e04287b TB |
1886 | block->expr2->ts = idx->ts; |
1887 | ||
524af0d6 | 1888 | /* if (strides (idx) /= sizes(idx-1)) is_contiguous = .false. */ |
11e5274a | 1889 | block->next = gfc_get_code (EXEC_IF); |
9e04287b | 1890 | block = block->next; |
9e04287b | 1891 | |
11e5274a | 1892 | block->block = gfc_get_code (EXEC_IF); |
9e04287b | 1893 | block = block->block; |
9e04287b TB |
1894 | |
1895 | /* if condition: strides(idx) /= sizes(idx-1). */ | |
1896 | block->expr1 = gfc_get_expr (); | |
1897 | block->expr1->ts.type = BT_LOGICAL; | |
1898 | block->expr1->ts.kind = gfc_default_logical_kind; | |
1899 | block->expr1->expr_type = EXPR_OP; | |
1900 | block->expr1->where = gfc_current_locus; | |
1901 | block->expr1->value.op.op = INTRINSIC_NE; | |
1902 | ||
1903 | block->expr1->value.op.op1 = gfc_lval_expr_from_sym (strides); | |
1904 | block->expr1->value.op.op1->ref = gfc_get_ref (); | |
1905 | block->expr1->value.op.op1->ref->type = REF_ARRAY; | |
1906 | block->expr1->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1907 | block->expr1->value.op.op1->ref->u.ar.dimen = 1; | |
1908 | block->expr1->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1909 | block->expr1->value.op.op1->ref->u.ar.start[0] = gfc_lval_expr_from_sym (idx); | |
1910 | block->expr1->value.op.op1->ref->u.ar.as = strides->as; | |
1911 | ||
1912 | block->expr1->value.op.op2 = gfc_lval_expr_from_sym (sizes); | |
1913 | block->expr1->value.op.op2->ref = gfc_get_ref (); | |
1914 | block->expr1->value.op.op2->ref->type = REF_ARRAY; | |
1915 | block->expr1->value.op.op2->ref->u.ar.as = sizes->as; | |
1916 | block->expr1->value.op.op2->ref->u.ar.type = AR_ELEMENT; | |
1917 | block->expr1->value.op.op2->ref->u.ar.dimen = 1; | |
1918 | block->expr1->value.op.op2->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1919 | block->expr1->value.op.op2->ref->u.ar.start[0] = gfc_get_expr (); | |
1920 | block->expr1->value.op.op2->ref->u.ar.start[0]->expr_type = EXPR_OP; | |
1011502b | 1921 | block->expr1->value.op.op2->ref->u.ar.start[0]->where = gfc_current_locus; |
9e04287b TB |
1922 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op = INTRINSIC_MINUS; |
1923 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1 | |
1924 | = gfc_lval_expr_from_sym (idx); | |
1925 | block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op2 | |
1926 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1927 | block->expr1->value.op.op2->ref->u.ar.start[0]->ts | |
1928 | = block->expr1->value.op.op2->ref->u.ar.start[0]->value.op.op1->ts; | |
1929 | ||
1930 | /* if body: is_contiguous = .false. */ | |
11e5274a | 1931 | block->next = gfc_get_code (EXEC_ASSIGN); |
9e04287b | 1932 | block = block->next; |
9e04287b TB |
1933 | block->expr1 = gfc_lval_expr_from_sym (is_contiguous); |
1934 | block->expr2 = gfc_get_logical_expr (gfc_default_logical_kind, | |
1935 | &gfc_current_locus, false); | |
1936 | ||
8e54f139 TB |
1937 | /* Obtain the size (number of elements) of "array" MINUS ONE, |
1938 | which is used in the scalarization. */ | |
1939 | gfc_get_symbol ("nelem", sub_ns, &nelem); | |
1940 | nelem->ts.type = BT_INTEGER; | |
1941 | nelem->ts.kind = gfc_index_integer_kind; | |
1942 | nelem->attr.flavor = FL_VARIABLE; | |
1943 | nelem->attr.artificial = 1; | |
1944 | gfc_set_sym_referenced (nelem); | |
1945 | gfc_commit_symbol (nelem); | |
1946 | ||
9e04287b | 1947 | /* nelem = sizes (rank) - 1. */ |
11e5274a | 1948 | last_code->next = gfc_get_code (EXEC_ASSIGN); |
29a7d776 | 1949 | last_code = last_code->next; |
8e54f139 TB |
1950 | |
1951 | last_code->expr1 = gfc_lval_expr_from_sym (nelem); | |
1952 | ||
1953 | last_code->expr2 = gfc_get_expr (); | |
1954 | last_code->expr2->expr_type = EXPR_OP; | |
1955 | last_code->expr2->value.op.op = INTRINSIC_MINUS; | |
1956 | last_code->expr2->value.op.op2 | |
1957 | = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
1958 | last_code->expr2->ts = last_code->expr2->value.op.op2->ts; | |
1011502b | 1959 | last_code->expr2->where = gfc_current_locus; |
8e54f139 | 1960 | |
9e04287b TB |
1961 | last_code->expr2->value.op.op1 = gfc_lval_expr_from_sym (sizes); |
1962 | last_code->expr2->value.op.op1->ref = gfc_get_ref (); | |
1963 | last_code->expr2->value.op.op1->ref->type = REF_ARRAY; | |
1964 | last_code->expr2->value.op.op1->ref->u.ar.type = AR_ELEMENT; | |
1965 | last_code->expr2->value.op.op1->ref->u.ar.dimen = 1; | |
1966 | last_code->expr2->value.op.op1->ref->u.ar.dimen_type[0] = DIMEN_ELEMENT; | |
1967 | last_code->expr2->value.op.op1->ref->u.ar.start[0] = gfc_copy_expr (rank); | |
1968 | last_code->expr2->value.op.op1->ref->u.ar.as = sizes->as; | |
8e54f139 TB |
1969 | |
1970 | /* Call final subroutines. We now generate code like: | |
1971 | use iso_c_binding | |
1972 | integer, pointer :: ptr | |
1973 | type(c_ptr) :: cptr | |
1974 | integer(c_intptr_t) :: i, addr | |
1975 | ||
1976 | select case (rank (array)) | |
1977 | case (3) | |
29a7d776 | 1978 | ! If needed, the array is packed |
8e54f139 TB |
1979 | call final_rank3 (array) |
1980 | case default: | |
1981 | do i = 0, size (array)-1 | |
29a7d776 | 1982 | addr = transfer (c_loc (array), addr) + i * stride |
8e54f139 TB |
1983 | call c_f_pointer (transfer (addr, cptr), ptr) |
1984 | call elemental_final (ptr) | |
1985 | end do | |
1986 | end select */ | |
1987 | ||
1988 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
1989 | { | |
1990 | gfc_finalizer *fini, *fini_elem = NULL; | |
29a7d776 | 1991 | |
807b50a7 | 1992 | gfc_get_symbol ("ptr1", sub_ns, &ptr); |
29a7d776 TB |
1993 | ptr->ts.type = BT_DERIVED; |
1994 | ptr->ts.u.derived = derived; | |
1995 | ptr->attr.flavor = FL_VARIABLE; | |
1996 | ptr->attr.pointer = 1; | |
1997 | ptr->attr.artificial = 1; | |
1998 | gfc_set_sym_referenced (ptr); | |
1999 | gfc_commit_symbol (ptr); | |
2000 | ||
8e54f139 | 2001 | /* SELECT CASE (RANK (array)). */ |
11e5274a | 2002 | last_code->next = gfc_get_code (EXEC_SELECT); |
8e54f139 | 2003 | last_code = last_code->next; |
9e04287b TB |
2004 | last_code->expr1 = gfc_copy_expr (rank); |
2005 | block = NULL; | |
8e54f139 TB |
2006 | |
2007 | for (fini = derived->f2k_derived->finalizers; fini; fini = fini->next) | |
2008 | { | |
a6cd299b | 2009 | gcc_assert (fini->proc_tree); /* Should have been set in gfc_resolve_finalizers. */ |
8e54f139 TB |
2010 | if (fini->proc_tree->n.sym->attr.elemental) |
2011 | { | |
2012 | fini_elem = fini; | |
2013 | continue; | |
2014 | } | |
2015 | ||
2016 | /* CASE (fini_rank). */ | |
2017 | if (block) | |
2018 | { | |
11e5274a | 2019 | block->block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2020 | block = block->block; |
2021 | } | |
2022 | else | |
2023 | { | |
11e5274a | 2024 | block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2025 | last_code->block = block; |
2026 | } | |
8e54f139 TB |
2027 | block->ext.block.case_list = gfc_get_case (); |
2028 | block->ext.block.case_list->where = gfc_current_locus; | |
2029 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
2030 | block->ext.block.case_list->low | |
2031 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, | |
2032 | fini->proc_tree->n.sym->formal->sym->as->rank); | |
2033 | else | |
2034 | block->ext.block.case_list->low | |
2035 | = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); | |
2036 | block->ext.block.case_list->high | |
cbde6c0f | 2037 | = gfc_copy_expr (block->ext.block.case_list->low); |
8e54f139 | 2038 | |
29a7d776 TB |
2039 | /* CALL fini_rank (array) - possibly with packing. */ |
2040 | if (fini->proc_tree->n.sym->formal->sym->attr.dimension) | |
9e04287b | 2041 | finalizer_insert_packed_call (block, fini, array, byte_stride, |
6838c137 | 2042 | idx, ptr, nelem, strides, |
9e04287b TB |
2043 | sizes, idx2, offset, is_contiguous, |
2044 | rank, sub_ns); | |
29a7d776 TB |
2045 | else |
2046 | { | |
11e5274a | 2047 | block->next = gfc_get_code (EXEC_CALL); |
29a7d776 TB |
2048 | block->next->symtree = fini->proc_tree; |
2049 | block->next->resolved_sym = fini->proc_tree->n.sym; | |
2050 | block->next->ext.actual = gfc_get_actual_arglist (); | |
2051 | block->next->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
2052 | } | |
8e54f139 TB |
2053 | } |
2054 | ||
2055 | /* Elemental call - scalarized. */ | |
2056 | if (fini_elem) | |
2057 | { | |
8e54f139 TB |
2058 | /* CASE DEFAULT. */ |
2059 | if (block) | |
2060 | { | |
11e5274a | 2061 | block->block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2062 | block = block->block; |
2063 | } | |
2064 | else | |
2065 | { | |
11e5274a | 2066 | block = gfc_get_code (EXEC_SELECT); |
8e54f139 TB |
2067 | last_code->block = block; |
2068 | } | |
8e54f139 TB |
2069 | block->ext.block.case_list = gfc_get_case (); |
2070 | ||
8e54f139 TB |
2071 | /* Create loop. */ |
2072 | iter = gfc_get_iterator (); | |
2073 | iter->var = gfc_lval_expr_from_sym (idx); | |
2074 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2075 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2076 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 2077 | block->next = gfc_get_code (EXEC_DO); |
8e54f139 | 2078 | block = block->next; |
8e54f139 | 2079 | block->ext.iterator = iter; |
11e5274a | 2080 | block->block = gfc_get_code (EXEC_DO); |
8e54f139 | 2081 | |
9e04287b TB |
2082 | /* Offset calculation. */ |
2083 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2084 | byte_stride, rank, block->block, | |
2085 | sub_ns); | |
2086 | ||
8e54f139 TB |
2087 | /* Create code for |
2088 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
9e04287b TB |
2089 | + offset, c_ptr), ptr). */ |
2090 | block->next | |
2091 | = finalization_scalarizer (array, ptr, | |
2092 | gfc_lval_expr_from_sym (offset), | |
2093 | sub_ns); | |
2094 | block = block->next; | |
8e54f139 TB |
2095 | |
2096 | /* CALL final_elemental (array). */ | |
11e5274a | 2097 | block->next = gfc_get_code (EXEC_CALL); |
8e54f139 | 2098 | block = block->next; |
8e54f139 TB |
2099 | block->symtree = fini_elem->proc_tree; |
2100 | block->resolved_sym = fini_elem->proc_sym; | |
2101 | block->ext.actual = gfc_get_actual_arglist (); | |
2102 | block->ext.actual->expr = gfc_lval_expr_from_sym (ptr); | |
2103 | } | |
2104 | } | |
2105 | ||
2106 | /* Finalize and deallocate allocatable components. The same manual | |
2107 | scalarization is used as above. */ | |
2108 | ||
2109 | if (finalizable_comp) | |
2110 | { | |
2111 | gfc_symbol *stat; | |
2112 | gfc_code *block = NULL; | |
8e54f139 TB |
2113 | |
2114 | if (!ptr) | |
2115 | { | |
807b50a7 | 2116 | gfc_get_symbol ("ptr2", sub_ns, &ptr); |
8e54f139 TB |
2117 | ptr->ts.type = BT_DERIVED; |
2118 | ptr->ts.u.derived = derived; | |
2119 | ptr->attr.flavor = FL_VARIABLE; | |
2120 | ptr->attr.pointer = 1; | |
2121 | ptr->attr.artificial = 1; | |
2122 | gfc_set_sym_referenced (ptr); | |
2123 | gfc_commit_symbol (ptr); | |
2124 | } | |
2125 | ||
2126 | gfc_get_symbol ("ignore", sub_ns, &stat); | |
2127 | stat->attr.flavor = FL_VARIABLE; | |
2128 | stat->attr.artificial = 1; | |
2129 | stat->ts.type = BT_INTEGER; | |
2130 | stat->ts.kind = gfc_default_integer_kind; | |
2131 | gfc_set_sym_referenced (stat); | |
2132 | gfc_commit_symbol (stat); | |
2133 | ||
2134 | /* Create loop. */ | |
2135 | iter = gfc_get_iterator (); | |
2136 | iter->var = gfc_lval_expr_from_sym (idx); | |
2137 | iter->start = gfc_get_int_expr (gfc_index_integer_kind, NULL, 0); | |
2138 | iter->end = gfc_lval_expr_from_sym (nelem); | |
2139 | iter->step = gfc_get_int_expr (gfc_index_integer_kind, NULL, 1); | |
11e5274a | 2140 | last_code->next = gfc_get_code (EXEC_DO); |
8e54f139 | 2141 | last_code = last_code->next; |
8e54f139 | 2142 | last_code->ext.iterator = iter; |
11e5274a | 2143 | last_code->block = gfc_get_code (EXEC_DO); |
8e54f139 | 2144 | |
9e04287b TB |
2145 | /* Offset calculation. */ |
2146 | block = finalization_get_offset (idx, idx2, offset, strides, sizes, | |
2147 | byte_stride, rank, last_code->block, | |
2148 | sub_ns); | |
2149 | ||
8e54f139 TB |
2150 | /* Create code for |
2151 | CALL C_F_POINTER (TRANSFER (TRANSFER (C_LOC (array, cptr), c_intptr) | |
29a7d776 | 2152 | + idx * stride, c_ptr), ptr). */ |
9e04287b TB |
2153 | block->next = finalization_scalarizer (array, ptr, |
2154 | gfc_lval_expr_from_sym(offset), | |
2155 | sub_ns); | |
2156 | block = block->next; | |
8e54f139 TB |
2157 | |
2158 | for (comp = derived->components; comp; comp = comp->next) | |
2159 | { | |
2160 | if (comp == derived->components && derived->attr.extension | |
2161 | && ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2162 | continue; | |
2163 | ||
2164 | finalize_component (gfc_lval_expr_from_sym (ptr), derived, comp, | |
807b50a7 | 2165 | stat, fini_coarray, &block, sub_ns); |
8e54f139 TB |
2166 | if (!last_code->block->next) |
2167 | last_code->block->next = block; | |
2168 | } | |
2169 | ||
2170 | } | |
2171 | ||
2172 | /* Call the finalizer of the ancestor. */ | |
2173 | if (ancestor_wrapper && ancestor_wrapper->expr_type != EXPR_NULL) | |
2174 | { | |
11e5274a | 2175 | last_code->next = gfc_get_code (EXEC_CALL); |
8e54f139 | 2176 | last_code = last_code->next; |
8e54f139 TB |
2177 | last_code->symtree = ancestor_wrapper->symtree; |
2178 | last_code->resolved_sym = ancestor_wrapper->symtree->n.sym; | |
2179 | ||
2180 | last_code->ext.actual = gfc_get_actual_arglist (); | |
2181 | last_code->ext.actual->expr = gfc_lval_expr_from_sym (array); | |
29a7d776 | 2182 | last_code->ext.actual->next = gfc_get_actual_arglist (); |
9e04287b | 2183 | last_code->ext.actual->next->expr = gfc_lval_expr_from_sym (byte_stride); |
29a7d776 TB |
2184 | last_code->ext.actual->next->next = gfc_get_actual_arglist (); |
2185 | last_code->ext.actual->next->next->expr | |
2186 | = gfc_lval_expr_from_sym (fini_coarray); | |
8e54f139 TB |
2187 | } |
2188 | ||
9e04287b | 2189 | gfc_free_expr (rank); |
8e54f139 TB |
2190 | vtab_final->initializer = gfc_lval_expr_from_sym (final); |
2191 | vtab_final->ts.interface = final; | |
2004617a | 2192 | free (name); |
8e54f139 TB |
2193 | } |
2194 | ||
2195 | ||
88ce8031 | 2196 | /* Add procedure pointers for all type-bound procedures to a vtab. */ |
d15bac21 JW |
2197 | |
2198 | static void | |
88ce8031 | 2199 | add_procs_to_declared_vtab (gfc_symbol *derived, gfc_symbol *vtype) |
d15bac21 | 2200 | { |
d15bac21 JW |
2201 | gfc_symbol* super_type; |
2202 | ||
88ce8031 | 2203 | super_type = gfc_get_derived_super_type (derived); |
d15bac21 | 2204 | |
88ce8031 | 2205 | if (super_type && (super_type != derived)) |
d15bac21 | 2206 | { |
88ce8031 JW |
2207 | /* Make sure that the PPCs appear in the same order as in the parent. */ |
2208 | copy_vtab_proc_comps (super_type, vtype); | |
1d0134b3 | 2209 | /* Only needed to get the PPC initializers right. */ |
88ce8031 JW |
2210 | add_procs_to_declared_vtab (super_type, vtype); |
2211 | } | |
d15bac21 | 2212 | |
88ce8031 JW |
2213 | if (derived->f2k_derived && derived->f2k_derived->tb_sym_root) |
2214 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_sym_root, vtype); | |
d15bac21 | 2215 | |
88ce8031 JW |
2216 | if (derived->f2k_derived && derived->f2k_derived->tb_uop_root) |
2217 | add_procs_to_declared_vtab1 (derived->f2k_derived->tb_uop_root, vtype); | |
d15bac21 JW |
2218 | } |
2219 | ||
2220 | ||
29a7d776 | 2221 | /* Find or generate the symbol for a derived type's vtab. */ |
d15bac21 JW |
2222 | |
2223 | gfc_symbol * | |
88ce8031 | 2224 | gfc_find_derived_vtab (gfc_symbol *derived) |
d15bac21 JW |
2225 | { |
2226 | gfc_namespace *ns; | |
50f30801 | 2227 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL, *def_init = NULL; |
611c64f0 | 2228 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
dfd6231e | 2229 | gfc_gsymbol *gsym = NULL; |
bf9f15ee | 2230 | gfc_symbol *dealloc = NULL, *arg = NULL; |
c49ea23d | 2231 | |
2fcd5884 PT |
2232 | if (derived->attr.pdt_template) |
2233 | return NULL; | |
2234 | ||
8b704316 | 2235 | /* Find the top-level namespace. */ |
e10f52d0 | 2236 | for (ns = gfc_current_ns; ns; ns = ns->parent) |
d15bac21 JW |
2237 | if (!ns->parent) |
2238 | break; | |
2239 | ||
e10f52d0 | 2240 | /* If the type is a class container, use the underlying derived type. */ |
8b704316 | 2241 | if (!derived->attr.unlimited_polymorphic && derived->attr.is_class) |
e10f52d0 | 2242 | derived = gfc_get_derived_super_type (derived); |
8b704316 | 2243 | |
7c929c9c TB |
2244 | if (!derived) |
2245 | return NULL; | |
2246 | ||
dfd6231e PT |
2247 | /* Find the gsymbol for the module of use associated derived types. */ |
2248 | if ((derived->attr.use_assoc || derived->attr.used_in_submodule) | |
2249 | && !derived->attr.vtype && !derived->attr.is_class) | |
2250 | gsym = gfc_find_gsymbol (gfc_gsym_root, derived->module); | |
2251 | else | |
2252 | gsym = NULL; | |
2253 | ||
2254 | /* Work in the gsymbol namespace if the top-level namespace is a module. | |
2255 | This ensures that the vtable is unique, which is required since we use | |
2256 | its address in SELECT TYPE. */ | |
2257 | if (gsym && gsym->ns && ns && ns->proc_name | |
2258 | && ns->proc_name->attr.flavor == FL_MODULE) | |
2259 | ns = gsym->ns; | |
2260 | ||
d15bac21 JW |
2261 | if (ns) |
2262 | { | |
2004617a QZ |
2263 | char tname[GFC_MAX_SYMBOL_LEN+1]; |
2264 | char *name; | |
29a7d776 | 2265 | |
4fa02692 | 2266 | get_unique_hashed_string (tname, derived); |
2004617a | 2267 | name = xasprintf ("__vtab_%s", tname); |
611c64f0 JW |
2268 | |
2269 | /* Look for the vtab symbol in various namespaces. */ | |
dfd6231e PT |
2270 | if (gsym && gsym->ns) |
2271 | { | |
2272 | gfc_find_symbol (name, gsym->ns, 0, &vtab); | |
2273 | if (vtab) | |
2274 | ns = gsym->ns; | |
2275 | } | |
2276 | if (vtab == NULL) | |
2277 | gfc_find_symbol (name, gfc_current_ns, 0, &vtab); | |
611c64f0 JW |
2278 | if (vtab == NULL) |
2279 | gfc_find_symbol (name, ns, 0, &vtab); | |
2280 | if (vtab == NULL) | |
2281 | gfc_find_symbol (name, derived->ns, 0, &vtab); | |
d15bac21 JW |
2282 | |
2283 | if (vtab == NULL) | |
2284 | { | |
2285 | gfc_get_symbol (name, ns, &vtab); | |
2286 | vtab->ts.type = BT_DERIVED; | |
cddf0123 | 2287 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
524af0d6 | 2288 | &gfc_current_locus)) |
e10f52d0 | 2289 | goto cleanup; |
d15bac21 | 2290 | vtab->attr.target = 1; |
95f5c775 | 2291 | vtab->attr.save = SAVE_IMPLICIT; |
d15bac21 | 2292 | vtab->attr.vtab = 1; |
f3f98a1e | 2293 | vtab->attr.access = ACCESS_PUBLIC; |
d15bac21 | 2294 | gfc_set_sym_referenced (vtab); |
2004617a | 2295 | name = xasprintf ("__vtype_%s", tname); |
29a7d776 | 2296 | |
d15bac21 JW |
2297 | gfc_find_symbol (name, ns, 0, &vtype); |
2298 | if (vtype == NULL) | |
2299 | { | |
2300 | gfc_component *c; | |
2301 | gfc_symbol *parent = NULL, *parent_vtab = NULL; | |
bf9f15ee PT |
2302 | bool rdt = false; |
2303 | ||
2304 | /* Is this a derived type with recursive allocatable | |
2305 | components? */ | |
2306 | c = (derived->attr.unlimited_polymorphic | |
2307 | || derived->attr.abstract) ? | |
2308 | NULL : derived->components; | |
2309 | for (; c; c= c->next) | |
2310 | if (c->ts.type == BT_DERIVED | |
2311 | && c->ts.u.derived == derived) | |
2312 | { | |
2313 | rdt = true; | |
2314 | break; | |
2315 | } | |
d15bac21 JW |
2316 | |
2317 | gfc_get_symbol (name, ns, &vtype); | |
cddf0123 | 2318 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
524af0d6 | 2319 | &gfc_current_locus)) |
81fb8a48 | 2320 | goto cleanup; |
f3f98a1e | 2321 | vtype->attr.access = ACCESS_PUBLIC; |
611c64f0 | 2322 | vtype->attr.vtype = 1; |
d15bac21 JW |
2323 | gfc_set_sym_referenced (vtype); |
2324 | ||
b04533af | 2325 | /* Add component '_hash'. */ |
524af0d6 | 2326 | if (!gfc_add_component (vtype, "_hash", &c)) |
81fb8a48 | 2327 | goto cleanup; |
d15bac21 JW |
2328 | c->ts.type = BT_INTEGER; |
2329 | c->ts.kind = 4; | |
2330 | c->attr.access = ACCESS_PRIVATE; | |
2331 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2332 | NULL, derived->hash_value); | |
2333 | ||
b04533af | 2334 | /* Add component '_size'. */ |
524af0d6 | 2335 | if (!gfc_add_component (vtype, "_size", &c)) |
81fb8a48 | 2336 | goto cleanup; |
d15bac21 | 2337 | c->ts.type = BT_INTEGER; |
f622221a | 2338 | c->ts.kind = gfc_size_kind; |
d15bac21 JW |
2339 | c->attr.access = ACCESS_PRIVATE; |
2340 | /* Remember the derived type in ts.u.derived, | |
2341 | so that the correct initializer can be set later on | |
2342 | (in gfc_conv_structure). */ | |
2343 | c->ts.u.derived = derived; | |
f622221a | 2344 | c->initializer = gfc_get_int_expr (gfc_size_kind, |
d15bac21 JW |
2345 | NULL, 0); |
2346 | ||
b04533af | 2347 | /* Add component _extends. */ |
524af0d6 | 2348 | if (!gfc_add_component (vtype, "_extends", &c)) |
81fb8a48 | 2349 | goto cleanup; |
d15bac21 JW |
2350 | c->attr.pointer = 1; |
2351 | c->attr.access = ACCESS_PRIVATE; | |
8b704316 PT |
2352 | if (!derived->attr.unlimited_polymorphic) |
2353 | parent = gfc_get_derived_super_type (derived); | |
2354 | else | |
2355 | parent = NULL; | |
2356 | ||
d15bac21 JW |
2357 | if (parent) |
2358 | { | |
88ce8031 | 2359 | parent_vtab = gfc_find_derived_vtab (parent); |
d15bac21 JW |
2360 | c->ts.type = BT_DERIVED; |
2361 | c->ts.u.derived = parent_vtab->ts.u.derived; | |
2362 | c->initializer = gfc_get_expr (); | |
2363 | c->initializer->expr_type = EXPR_VARIABLE; | |
2364 | gfc_find_sym_tree (parent_vtab->name, parent_vtab->ns, | |
2365 | 0, &c->initializer->symtree); | |
2366 | } | |
2367 | else | |
2368 | { | |
2369 | c->ts.type = BT_DERIVED; | |
2370 | c->ts.u.derived = vtype; | |
2371 | c->initializer = gfc_get_null_expr (NULL); | |
2372 | } | |
2373 | ||
8b704316 PT |
2374 | if (!derived->attr.unlimited_polymorphic |
2375 | && derived->components == NULL | |
2376 | && !derived->attr.zero_comp) | |
611c64f0 JW |
2377 | { |
2378 | /* At this point an error must have occurred. | |
2379 | Prevent further errors on the vtype components. */ | |
2380 | found_sym = vtab; | |
2381 | goto have_vtype; | |
2382 | } | |
2383 | ||
b04533af | 2384 | /* Add component _def_init. */ |
524af0d6 | 2385 | if (!gfc_add_component (vtype, "_def_init", &c)) |
50f30801 JW |
2386 | goto cleanup; |
2387 | c->attr.pointer = 1; | |
8e54f139 | 2388 | c->attr.artificial = 1; |
50f30801 JW |
2389 | c->attr.access = ACCESS_PRIVATE; |
2390 | c->ts.type = BT_DERIVED; | |
2391 | c->ts.u.derived = derived; | |
8b704316 PT |
2392 | if (derived->attr.unlimited_polymorphic |
2393 | || derived->attr.abstract) | |
611c64f0 | 2394 | c->initializer = gfc_get_null_expr (NULL); |
50f30801 JW |
2395 | else |
2396 | { | |
2397 | /* Construct default initialization variable. */ | |
2004617a | 2398 | name = xasprintf ("__def_init_%s", tname); |
50f30801 JW |
2399 | gfc_get_symbol (name, ns, &def_init); |
2400 | def_init->attr.target = 1; | |
8e54f139 | 2401 | def_init->attr.artificial = 1; |
95f5c775 | 2402 | def_init->attr.save = SAVE_IMPLICIT; |
50f30801 | 2403 | def_init->attr.access = ACCESS_PUBLIC; |
22c30bc0 | 2404 | def_init->attr.flavor = FL_VARIABLE; |
50f30801 JW |
2405 | gfc_set_sym_referenced (def_init); |
2406 | def_init->ts.type = BT_DERIVED; | |
2407 | def_init->ts.u.derived = derived; | |
2408 | def_init->value = gfc_default_initializer (&def_init->ts); | |
2409 | ||
2410 | c->initializer = gfc_lval_expr_from_sym (def_init); | |
2411 | } | |
2412 | ||
b04533af | 2413 | /* Add component _copy. */ |
524af0d6 | 2414 | if (!gfc_add_component (vtype, "_copy", &c)) |
611c64f0 JW |
2415 | goto cleanup; |
2416 | c->attr.proc_pointer = 1; | |
2417 | c->attr.access = ACCESS_PRIVATE; | |
2418 | c->tb = XCNEW (gfc_typebound_proc); | |
2419 | c->tb->ppc = 1; | |
8b704316 PT |
2420 | if (derived->attr.unlimited_polymorphic |
2421 | || derived->attr.abstract) | |
611c64f0 JW |
2422 | c->initializer = gfc_get_null_expr (NULL); |
2423 | else | |
2424 | { | |
2425 | /* Set up namespace. */ | |
2426 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2427 | sub_ns->sibling = ns->contained; | |
2428 | ns->contained = sub_ns; | |
2429 | sub_ns->resolved = 1; | |
2430 | /* Set up procedure symbol. */ | |
2004617a | 2431 | name = xasprintf ("__copy_%s", tname); |
611c64f0 JW |
2432 | gfc_get_symbol (name, sub_ns, ©); |
2433 | sub_ns->proc_name = copy; | |
2434 | copy->attr.flavor = FL_PROCEDURE; | |
cf651ca2 | 2435 | copy->attr.subroutine = 1; |
0b73eb81 | 2436 | copy->attr.pure = 1; |
8e54f139 | 2437 | copy->attr.artificial = 1; |
611c64f0 | 2438 | copy->attr.if_source = IFSRC_DECL; |
c49ea23d PT |
2439 | /* This is elemental so that arrays are automatically |
2440 | treated correctly by the scalarizer. */ | |
2441 | copy->attr.elemental = 1; | |
844ba455 JW |
2442 | if (ns->proc_name->attr.flavor == FL_MODULE) |
2443 | copy->module = ns->proc_name->name; | |
611c64f0 JW |
2444 | gfc_set_sym_referenced (copy); |
2445 | /* Set up formal arguments. */ | |
2446 | gfc_get_symbol ("src", sub_ns, &src); | |
2447 | src->ts.type = BT_DERIVED; | |
2448 | src->ts.u.derived = derived; | |
2449 | src->attr.flavor = FL_VARIABLE; | |
2450 | src->attr.dummy = 1; | |
8e54f139 TB |
2451 | src->attr.artificial = 1; |
2452 | src->attr.intent = INTENT_IN; | |
611c64f0 JW |
2453 | gfc_set_sym_referenced (src); |
2454 | copy->formal = gfc_get_formal_arglist (); | |
2455 | copy->formal->sym = src; | |
2456 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2457 | dst->ts.type = BT_DERIVED; | |
2458 | dst->ts.u.derived = derived; | |
2459 | dst->attr.flavor = FL_VARIABLE; | |
2460 | dst->attr.dummy = 1; | |
8e54f139 | 2461 | dst->attr.artificial = 1; |
16023efc | 2462 | dst->attr.intent = INTENT_INOUT; |
611c64f0 JW |
2463 | gfc_set_sym_referenced (dst); |
2464 | copy->formal->next = gfc_get_formal_arglist (); | |
2465 | copy->formal->next->sym = dst; | |
2466 | /* Set up code. */ | |
11e5274a | 2467 | sub_ns->code = gfc_get_code (EXEC_INIT_ASSIGN); |
611c64f0 JW |
2468 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2469 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2470 | /* Set initializer. */ | |
2471 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2472 | c->ts.interface = copy; | |
2473 | } | |
2474 | ||
8e54f139 TB |
2475 | /* Add component _final, which contains a procedure pointer to |
2476 | a wrapper which handles both the freeing of allocatable | |
2477 | components and the calls to finalization subroutines. | |
2478 | Note: The actual wrapper function can only be generated | |
2479 | at resolution time. */ | |
524af0d6 | 2480 | if (!gfc_add_component (vtype, "_final", &c)) |
8e54f139 TB |
2481 | goto cleanup; |
2482 | c->attr.proc_pointer = 1; | |
2483 | c->attr.access = ACCESS_PRIVATE; | |
f8add009 | 2484 | c->attr.artificial = 1; |
8e54f139 TB |
2485 | c->tb = XCNEW (gfc_typebound_proc); |
2486 | c->tb->ppc = 1; | |
2487 | generate_finalization_wrapper (derived, ns, tname, c); | |
2488 | ||
bf9f15ee PT |
2489 | /* Add component _deallocate. */ |
2490 | if (!gfc_add_component (vtype, "_deallocate", &c)) | |
2491 | goto cleanup; | |
2492 | c->attr.proc_pointer = 1; | |
2493 | c->attr.access = ACCESS_PRIVATE; | |
2494 | c->tb = XCNEW (gfc_typebound_proc); | |
2495 | c->tb->ppc = 1; | |
2496 | if (derived->attr.unlimited_polymorphic | |
2497 | || derived->attr.abstract | |
2498 | || !rdt) | |
2499 | c->initializer = gfc_get_null_expr (NULL); | |
2500 | else | |
2501 | { | |
2502 | /* Set up namespace. */ | |
2503 | gfc_namespace *sub_ns = gfc_get_namespace (ns, 0); | |
2504 | ||
2505 | sub_ns->sibling = ns->contained; | |
2506 | ns->contained = sub_ns; | |
2507 | sub_ns->resolved = 1; | |
2508 | /* Set up procedure symbol. */ | |
2004617a | 2509 | name = xasprintf ("__deallocate_%s", tname); |
bf9f15ee PT |
2510 | gfc_get_symbol (name, sub_ns, &dealloc); |
2511 | sub_ns->proc_name = dealloc; | |
2512 | dealloc->attr.flavor = FL_PROCEDURE; | |
2513 | dealloc->attr.subroutine = 1; | |
2514 | dealloc->attr.pure = 1; | |
2515 | dealloc->attr.artificial = 1; | |
2516 | dealloc->attr.if_source = IFSRC_DECL; | |
2517 | ||
2518 | if (ns->proc_name->attr.flavor == FL_MODULE) | |
2519 | dealloc->module = ns->proc_name->name; | |
2520 | gfc_set_sym_referenced (dealloc); | |
2521 | /* Set up formal argument. */ | |
2522 | gfc_get_symbol ("arg", sub_ns, &arg); | |
2523 | arg->ts.type = BT_DERIVED; | |
2524 | arg->ts.u.derived = derived; | |
2525 | arg->attr.flavor = FL_VARIABLE; | |
2526 | arg->attr.dummy = 1; | |
2527 | arg->attr.artificial = 1; | |
2528 | arg->attr.intent = INTENT_INOUT; | |
2529 | arg->attr.dimension = 1; | |
2530 | arg->attr.allocatable = 1; | |
2531 | arg->as = gfc_get_array_spec(); | |
2532 | arg->as->type = AS_ASSUMED_SHAPE; | |
2533 | arg->as->rank = 1; | |
2534 | arg->as->lower[0] = gfc_get_int_expr (gfc_default_integer_kind, | |
2535 | NULL, 1); | |
2536 | gfc_set_sym_referenced (arg); | |
2537 | dealloc->formal = gfc_get_formal_arglist (); | |
2538 | dealloc->formal->sym = arg; | |
2539 | /* Set up code. */ | |
2540 | sub_ns->code = gfc_get_code (EXEC_DEALLOCATE); | |
2541 | sub_ns->code->ext.alloc.list = gfc_get_alloc (); | |
2542 | sub_ns->code->ext.alloc.list->expr | |
2543 | = gfc_lval_expr_from_sym (arg); | |
2544 | /* Set initializer. */ | |
2545 | c->initializer = gfc_lval_expr_from_sym (dealloc); | |
2546 | c->ts.interface = dealloc; | |
2547 | } | |
2548 | ||
50f30801 | 2549 | /* Add procedure pointers for type-bound procedures. */ |
8b704316 PT |
2550 | if (!derived->attr.unlimited_polymorphic) |
2551 | add_procs_to_declared_vtab (derived, vtype); | |
d6cd8711 | 2552 | } |
d15bac21 | 2553 | |
611c64f0 | 2554 | have_vtype: |
d15bac21 JW |
2555 | vtab->ts.u.derived = vtype; |
2556 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2557 | } | |
2004617a | 2558 | free (name); |
d15bac21 JW |
2559 | } |
2560 | ||
81fb8a48 MM |
2561 | found_sym = vtab; |
2562 | ||
2563 | cleanup: | |
2564 | /* It is unexpected to have some symbols added at resolution or code | |
2565 | generation time. We commit the changes in order to keep a clean state. */ | |
2566 | if (found_sym) | |
e10f52d0 JW |
2567 | { |
2568 | gfc_commit_symbol (vtab); | |
2569 | if (vtype) | |
2570 | gfc_commit_symbol (vtype); | |
50f30801 JW |
2571 | if (def_init) |
2572 | gfc_commit_symbol (def_init); | |
611c64f0 JW |
2573 | if (copy) |
2574 | gfc_commit_symbol (copy); | |
2575 | if (src) | |
2576 | gfc_commit_symbol (src); | |
2577 | if (dst) | |
2578 | gfc_commit_symbol (dst); | |
bf9f15ee PT |
2579 | if (dealloc) |
2580 | gfc_commit_symbol (dealloc); | |
2581 | if (arg) | |
2582 | gfc_commit_symbol (arg); | |
e10f52d0 | 2583 | } |
81fb8a48 MM |
2584 | else |
2585 | gfc_undo_symbols (); | |
2586 | ||
2587 | return found_sym; | |
d15bac21 JW |
2588 | } |
2589 | ||
2590 | ||
86035eec TB |
2591 | /* Check if a derived type is finalizable. That is the case if it |
2592 | (1) has a FINAL subroutine or | |
2593 | (2) has a nonpointer nonallocatable component of finalizable type. | |
2594 | If it is finalizable, return an expression containing the | |
2595 | finalization wrapper. */ | |
2596 | ||
2597 | bool | |
2598 | gfc_is_finalizable (gfc_symbol *derived, gfc_expr **final_expr) | |
2599 | { | |
2600 | gfc_symbol *vtab; | |
2601 | gfc_component *c; | |
2602 | ||
2603 | /* (1) Check for FINAL subroutines. */ | |
2604 | if (derived->f2k_derived && derived->f2k_derived->finalizers) | |
2605 | goto yes; | |
2606 | ||
2607 | /* (2) Check for components of finalizable type. */ | |
2608 | for (c = derived->components; c; c = c->next) | |
2609 | if (c->ts.type == BT_DERIVED | |
2610 | && !c->attr.pointer && !c->attr.proc_pointer && !c->attr.allocatable | |
2611 | && gfc_is_finalizable (c->ts.u.derived, NULL)) | |
2612 | goto yes; | |
2613 | ||
2614 | return false; | |
2615 | ||
2616 | yes: | |
2617 | /* Make sure vtab is generated. */ | |
2618 | vtab = gfc_find_derived_vtab (derived); | |
2619 | if (final_expr) | |
2620 | { | |
2621 | /* Return finalizer expression. */ | |
2622 | gfc_component *final; | |
2623 | final = vtab->ts.u.derived->components->next->next->next->next->next; | |
2624 | gcc_assert (strcmp (final->name, "_final") == 0); | |
2625 | gcc_assert (final->initializer | |
2626 | && final->initializer->expr_type != EXPR_NULL); | |
2627 | *final_expr = final->initializer; | |
2628 | } | |
2629 | return true; | |
2630 | } | |
2631 | ||
2632 | ||
8b704316 | 2633 | /* Find (or generate) the symbol for an intrinsic type's vtab. This is |
7289d1c9 | 2634 | needed to support unlimited polymorphism. */ |
8b704316 | 2635 | |
7289d1c9 JW |
2636 | static gfc_symbol * |
2637 | find_intrinsic_vtab (gfc_typespec *ts) | |
8b704316 PT |
2638 | { |
2639 | gfc_namespace *ns; | |
adede54c | 2640 | gfc_symbol *vtab = NULL, *vtype = NULL, *found_sym = NULL; |
8b704316 | 2641 | gfc_symbol *copy = NULL, *src = NULL, *dst = NULL; |
8b704316 | 2642 | |
8b704316 PT |
2643 | /* Find the top-level namespace. */ |
2644 | for (ns = gfc_current_ns; ns; ns = ns->parent) | |
2645 | if (!ns->parent) | |
2646 | break; | |
2647 | ||
8b704316 PT |
2648 | if (ns) |
2649 | { | |
2004617a QZ |
2650 | char tname[GFC_MAX_SYMBOL_LEN+1]; |
2651 | char *name; | |
b120c8b2 | 2652 | |
cef026ec AV |
2653 | /* Encode all types as TYPENAME_KIND_ including especially character |
2654 | arrays, whose length is now consistently stored in the _len component | |
2655 | of the class-variable. */ | |
2656 | sprintf (tname, "%s_%d_", gfc_basic_typename (ts->type), ts->kind); | |
2004617a | 2657 | name = xasprintf ("__vtab_%s", tname); |
8b704316 | 2658 | |
63631f7d AV |
2659 | /* Look for the vtab symbol in the top-level namespace only. */ |
2660 | gfc_find_symbol (name, ns, 0, &vtab); | |
8b704316 PT |
2661 | |
2662 | if (vtab == NULL) | |
2663 | { | |
2664 | gfc_get_symbol (name, ns, &vtab); | |
2665 | vtab->ts.type = BT_DERIVED; | |
cddf0123 | 2666 | if (!gfc_add_flavor (&vtab->attr, FL_VARIABLE, NULL, |
524af0d6 | 2667 | &gfc_current_locus)) |
8b704316 PT |
2668 | goto cleanup; |
2669 | vtab->attr.target = 1; | |
2670 | vtab->attr.save = SAVE_IMPLICIT; | |
2671 | vtab->attr.vtab = 1; | |
2672 | vtab->attr.access = ACCESS_PUBLIC; | |
2673 | gfc_set_sym_referenced (vtab); | |
2004617a | 2674 | name = xasprintf ("__vtype_%s", tname); |
8b704316 PT |
2675 | |
2676 | gfc_find_symbol (name, ns, 0, &vtype); | |
2677 | if (vtype == NULL) | |
2678 | { | |
2679 | gfc_component *c; | |
2680 | int hash; | |
2681 | gfc_namespace *sub_ns; | |
2682 | gfc_namespace *contained; | |
cddf0123 | 2683 | gfc_expr *e; |
cdd17931 | 2684 | size_t e_size; |
8b704316 PT |
2685 | |
2686 | gfc_get_symbol (name, ns, &vtype); | |
cddf0123 | 2687 | if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL, |
524af0d6 | 2688 | &gfc_current_locus)) |
8b704316 PT |
2689 | goto cleanup; |
2690 | vtype->attr.access = ACCESS_PUBLIC; | |
2691 | vtype->attr.vtype = 1; | |
2692 | gfc_set_sym_referenced (vtype); | |
2693 | ||
2694 | /* Add component '_hash'. */ | |
524af0d6 | 2695 | if (!gfc_add_component (vtype, "_hash", &c)) |
8b704316 PT |
2696 | goto cleanup; |
2697 | c->ts.type = BT_INTEGER; | |
2698 | c->ts.kind = 4; | |
2699 | c->attr.access = ACCESS_PRIVATE; | |
2700 | hash = gfc_intrinsic_hash_value (ts); | |
2701 | c->initializer = gfc_get_int_expr (gfc_default_integer_kind, | |
2702 | NULL, hash); | |
2703 | ||
2704 | /* Add component '_size'. */ | |
524af0d6 | 2705 | if (!gfc_add_component (vtype, "_size", &c)) |
8b704316 PT |
2706 | goto cleanup; |
2707 | c->ts.type = BT_INTEGER; | |
f622221a | 2708 | c->ts.kind = gfc_size_kind; |
8b704316 | 2709 | c->attr.access = ACCESS_PRIVATE; |
cddf0123 PT |
2710 | |
2711 | /* Build a minimal expression to make use of | |
34d9d749 AV |
2712 | target-memory.c/gfc_element_size for 'size'. Special handling |
2713 | for character arrays, that are not constant sized: to support | |
2714 | len (str) * kind, only the kind information is stored in the | |
2715 | vtab. */ | |
cddf0123 PT |
2716 | e = gfc_get_expr (); |
2717 | e->ts = *ts; | |
2718 | e->expr_type = EXPR_VARIABLE; | |
cdd17931 HA |
2719 | if (ts->type == BT_CHARACTER) |
2720 | e_size = ts->kind; | |
2721 | else | |
2722 | gfc_element_size (e, &e_size); | |
f622221a | 2723 | c->initializer = gfc_get_int_expr (gfc_size_kind, |
cddf0123 | 2724 | NULL, |
cdd17931 | 2725 | e_size); |
cddf0123 | 2726 | gfc_free_expr (e); |
8b704316 PT |
2727 | |
2728 | /* Add component _extends. */ | |
524af0d6 | 2729 | if (!gfc_add_component (vtype, "_extends", &c)) |
8b704316 PT |
2730 | goto cleanup; |
2731 | c->attr.pointer = 1; | |
2732 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2733 | c->ts.type = BT_VOID; |
8b704316 PT |
2734 | c->initializer = gfc_get_null_expr (NULL); |
2735 | ||
2736 | /* Add component _def_init. */ | |
524af0d6 | 2737 | if (!gfc_add_component (vtype, "_def_init", &c)) |
8b704316 PT |
2738 | goto cleanup; |
2739 | c->attr.pointer = 1; | |
2740 | c->attr.access = ACCESS_PRIVATE; | |
15115f7a | 2741 | c->ts.type = BT_VOID; |
8b704316 PT |
2742 | c->initializer = gfc_get_null_expr (NULL); |
2743 | ||
2744 | /* Add component _copy. */ | |
524af0d6 | 2745 | if (!gfc_add_component (vtype, "_copy", &c)) |
8b704316 PT |
2746 | goto cleanup; |
2747 | c->attr.proc_pointer = 1; | |
2748 | c->attr.access = ACCESS_PRIVATE; | |
2749 | c->tb = XCNEW (gfc_typebound_proc); | |
2750 | c->tb->ppc = 1; | |
2751 | ||
3c3f892b | 2752 | if (ts->type != BT_CHARACTER) |
2004617a | 2753 | name = xasprintf ("__copy_%s", tname); |
3c3f892b JW |
2754 | else |
2755 | { | |
2756 | /* __copy is always the same for characters. | |
2757 | Check to see if copy function already exists. */ | |
2004617a | 2758 | name = xasprintf ("__copy_character_%d", ts->kind); |
3c3f892b JW |
2759 | contained = ns->contained; |
2760 | for (; contained; contained = contained->sibling) | |
2761 | if (contained->proc_name | |
2762 | && strcmp (name, contained->proc_name->name) == 0) | |
2763 | { | |
2764 | copy = contained->proc_name; | |
2765 | goto got_char_copy; | |
2766 | } | |
2767 | } | |
8b704316 PT |
2768 | |
2769 | /* Set up namespace. */ | |
2770 | sub_ns = gfc_get_namespace (ns, 0); | |
2771 | sub_ns->sibling = ns->contained; | |
2772 | ns->contained = sub_ns; | |
2773 | sub_ns->resolved = 1; | |
2774 | /* Set up procedure symbol. */ | |
8b704316 PT |
2775 | gfc_get_symbol (name, sub_ns, ©); |
2776 | sub_ns->proc_name = copy; | |
2777 | copy->attr.flavor = FL_PROCEDURE; | |
2778 | copy->attr.subroutine = 1; | |
2779 | copy->attr.pure = 1; | |
2780 | copy->attr.if_source = IFSRC_DECL; | |
2781 | /* This is elemental so that arrays are automatically | |
2782 | treated correctly by the scalarizer. */ | |
2783 | copy->attr.elemental = 1; | |
f8add009 | 2784 | if (ns->proc_name && ns->proc_name->attr.flavor == FL_MODULE) |
8b704316 | 2785 | copy->module = ns->proc_name->name; |
f8add009 | 2786 | gfc_set_sym_referenced (copy); |
8b704316 PT |
2787 | /* Set up formal arguments. */ |
2788 | gfc_get_symbol ("src", sub_ns, &src); | |
2789 | src->ts.type = ts->type; | |
2790 | src->ts.kind = ts->kind; | |
2791 | src->attr.flavor = FL_VARIABLE; | |
2792 | src->attr.dummy = 1; | |
2793 | src->attr.intent = INTENT_IN; | |
2794 | gfc_set_sym_referenced (src); | |
2795 | copy->formal = gfc_get_formal_arglist (); | |
2796 | copy->formal->sym = src; | |
2797 | gfc_get_symbol ("dst", sub_ns, &dst); | |
2798 | dst->ts.type = ts->type; | |
2799 | dst->ts.kind = ts->kind; | |
2800 | dst->attr.flavor = FL_VARIABLE; | |
2801 | dst->attr.dummy = 1; | |
16023efc | 2802 | dst->attr.intent = INTENT_INOUT; |
8b704316 PT |
2803 | gfc_set_sym_referenced (dst); |
2804 | copy->formal->next = gfc_get_formal_arglist (); | |
2805 | copy->formal->next->sym = dst; | |
2806 | /* Set up code. */ | |
11e5274a | 2807 | sub_ns->code = gfc_get_code (EXEC_INIT_ASSIGN); |
8b704316 PT |
2808 | sub_ns->code->expr1 = gfc_lval_expr_from_sym (dst); |
2809 | sub_ns->code->expr2 = gfc_lval_expr_from_sym (src); | |
2810 | got_char_copy: | |
2811 | /* Set initializer. */ | |
2812 | c->initializer = gfc_lval_expr_from_sym (copy); | |
2813 | c->ts.interface = copy; | |
94241120 TB |
2814 | |
2815 | /* Add component _final. */ | |
524af0d6 | 2816 | if (!gfc_add_component (vtype, "_final", &c)) |
94241120 TB |
2817 | goto cleanup; |
2818 | c->attr.proc_pointer = 1; | |
2819 | c->attr.access = ACCESS_PRIVATE; | |
f8add009 | 2820 | c->attr.artificial = 1; |
94241120 TB |
2821 | c->tb = XCNEW (gfc_typebound_proc); |
2822 | c->tb->ppc = 1; | |
2823 | c->initializer = gfc_get_null_expr (NULL); | |
8b704316 PT |
2824 | } |
2825 | vtab->ts.u.derived = vtype; | |
2826 | vtab->value = gfc_default_initializer (&vtab->ts); | |
2827 | } | |
2004617a | 2828 | free (name); |
8b704316 PT |
2829 | } |
2830 | ||
2831 | found_sym = vtab; | |
2832 | ||
2833 | cleanup: | |
2834 | /* It is unexpected to have some symbols added at resolution or code | |
2835 | generation time. We commit the changes in order to keep a clean state. */ | |
2836 | if (found_sym) | |
2837 | { | |
2838 | gfc_commit_symbol (vtab); | |
2839 | if (vtype) | |
2840 | gfc_commit_symbol (vtype); | |
8b704316 PT |
2841 | if (copy) |
2842 | gfc_commit_symbol (copy); | |
2843 | if (src) | |
2844 | gfc_commit_symbol (src); | |
2845 | if (dst) | |
2846 | gfc_commit_symbol (dst); | |
2847 | } | |
2848 | else | |
2849 | gfc_undo_symbols (); | |
2850 | ||
2851 | return found_sym; | |
2852 | } | |
2853 | ||
2854 | ||
7289d1c9 JW |
2855 | /* Find (or generate) a vtab for an arbitrary type (derived or intrinsic). */ |
2856 | ||
2857 | gfc_symbol * | |
2858 | gfc_find_vtab (gfc_typespec *ts) | |
2859 | { | |
2860 | switch (ts->type) | |
2861 | { | |
2862 | case BT_UNKNOWN: | |
2863 | return NULL; | |
2864 | case BT_DERIVED: | |
2865 | return gfc_find_derived_vtab (ts->u.derived); | |
2866 | case BT_CLASS: | |
903ecc6c JW |
2867 | if (ts->u.derived->components && ts->u.derived->components->ts.u.derived) |
2868 | return gfc_find_derived_vtab (ts->u.derived->components->ts.u.derived); | |
2869 | else | |
2870 | return NULL; | |
7289d1c9 JW |
2871 | default: |
2872 | return find_intrinsic_vtab (ts); | |
2873 | } | |
2874 | } | |
2875 | ||
2876 | ||
d15bac21 JW |
2877 | /* General worker function to find either a type-bound procedure or a |
2878 | type-bound user operator. */ | |
2879 | ||
2880 | static gfc_symtree* | |
524af0d6 | 2881 | find_typebound_proc_uop (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2882 | const char* name, bool noaccess, bool uop, |
2883 | locus* where) | |
2884 | { | |
2885 | gfc_symtree* res; | |
2886 | gfc_symtree* root; | |
2887 | ||
d15bac21 JW |
2888 | /* Set default to failure. */ |
2889 | if (t) | |
524af0d6 | 2890 | *t = false; |
d15bac21 | 2891 | |
9b940c6d JW |
2892 | if (derived->f2k_derived) |
2893 | /* Set correct symbol-root. */ | |
2894 | root = (uop ? derived->f2k_derived->tb_uop_root | |
2895 | : derived->f2k_derived->tb_sym_root); | |
2896 | else | |
2897 | return NULL; | |
2898 | ||
d15bac21 JW |
2899 | /* Try to find it in the current type's namespace. */ |
2900 | res = gfc_find_symtree (root, name); | |
2901 | if (res && res->n.tb && !res->n.tb->error) | |
2902 | { | |
2903 | /* We found one. */ | |
2904 | if (t) | |
524af0d6 | 2905 | *t = true; |
d15bac21 JW |
2906 | |
2907 | if (!noaccess && derived->attr.use_assoc | |
2908 | && res->n.tb->access == ACCESS_PRIVATE) | |
2909 | { | |
2910 | if (where) | |
c4100eae | 2911 | gfc_error ("%qs of %qs is PRIVATE at %L", |
d15bac21 JW |
2912 | name, derived->name, where); |
2913 | if (t) | |
524af0d6 | 2914 | *t = false; |
d15bac21 JW |
2915 | } |
2916 | ||
2917 | return res; | |
2918 | } | |
2919 | ||
2920 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2921 | if (derived->attr.extension) | |
2922 | { | |
2923 | gfc_symbol* super_type; | |
2924 | super_type = gfc_get_derived_super_type (derived); | |
2925 | gcc_assert (super_type); | |
2926 | ||
2927 | return find_typebound_proc_uop (super_type, t, name, | |
2928 | noaccess, uop, where); | |
2929 | } | |
2930 | ||
2931 | /* Nothing found. */ | |
2932 | return NULL; | |
2933 | } | |
2934 | ||
2935 | ||
2936 | /* Find a type-bound procedure or user operator by name for a derived-type | |
2937 | (looking recursively through the super-types). */ | |
2938 | ||
2939 | gfc_symtree* | |
524af0d6 | 2940 | gfc_find_typebound_proc (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2941 | const char* name, bool noaccess, locus* where) |
2942 | { | |
2943 | return find_typebound_proc_uop (derived, t, name, noaccess, false, where); | |
2944 | } | |
2945 | ||
2946 | gfc_symtree* | |
524af0d6 | 2947 | gfc_find_typebound_user_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2948 | const char* name, bool noaccess, locus* where) |
2949 | { | |
2950 | return find_typebound_proc_uop (derived, t, name, noaccess, true, where); | |
2951 | } | |
2952 | ||
2953 | ||
2954 | /* Find a type-bound intrinsic operator looking recursively through the | |
2955 | super-type hierarchy. */ | |
2956 | ||
2957 | gfc_typebound_proc* | |
524af0d6 | 2958 | gfc_find_typebound_intrinsic_op (gfc_symbol* derived, bool* t, |
d15bac21 JW |
2959 | gfc_intrinsic_op op, bool noaccess, |
2960 | locus* where) | |
2961 | { | |
2962 | gfc_typebound_proc* res; | |
2963 | ||
2964 | /* Set default to failure. */ | |
2965 | if (t) | |
524af0d6 | 2966 | *t = false; |
d15bac21 JW |
2967 | |
2968 | /* Try to find it in the current type's namespace. */ | |
2969 | if (derived->f2k_derived) | |
2970 | res = derived->f2k_derived->tb_op[op]; | |
8b704316 | 2971 | else |
d15bac21 JW |
2972 | res = NULL; |
2973 | ||
2974 | /* Check access. */ | |
2975 | if (res && !res->error) | |
2976 | { | |
2977 | /* We found one. */ | |
2978 | if (t) | |
524af0d6 | 2979 | *t = true; |
d15bac21 JW |
2980 | |
2981 | if (!noaccess && derived->attr.use_assoc | |
2982 | && res->access == ACCESS_PRIVATE) | |
2983 | { | |
2984 | if (where) | |
c4100eae | 2985 | gfc_error ("%qs of %qs is PRIVATE at %L", |
d15bac21 JW |
2986 | gfc_op2string (op), derived->name, where); |
2987 | if (t) | |
524af0d6 | 2988 | *t = false; |
d15bac21 JW |
2989 | } |
2990 | ||
2991 | return res; | |
2992 | } | |
2993 | ||
2994 | /* Otherwise, recurse on parent type if derived is an extension. */ | |
2995 | if (derived->attr.extension) | |
2996 | { | |
2997 | gfc_symbol* super_type; | |
2998 | super_type = gfc_get_derived_super_type (derived); | |
2999 | gcc_assert (super_type); | |
3000 | ||
3001 | return gfc_find_typebound_intrinsic_op (super_type, t, op, | |
3002 | noaccess, where); | |
3003 | } | |
3004 | ||
3005 | /* Nothing found. */ | |
3006 | return NULL; | |
3007 | } | |
3008 | ||
3009 | ||
3010 | /* Get a typebound-procedure symtree or create and insert it if not yet | |
3011 | present. This is like a very simplified version of gfc_get_sym_tree for | |
3012 | tbp-symtrees rather than regular ones. */ | |
3013 | ||
3014 | gfc_symtree* | |
3015 | gfc_get_tbp_symtree (gfc_symtree **root, const char *name) | |
3016 | { | |
b93d8a3f JW |
3017 | gfc_symtree *result = gfc_find_symtree (*root, name); |
3018 | return result ? result : gfc_new_symtree (root, name); | |
d15bac21 | 3019 | } |