| 1 |
/* |
| 2 |
* Ascend Instance Tree Killing |
| 3 |
* by Tom Epperly & Ben Allan |
| 4 |
* 9/3/89 |
| 5 |
* Version: $Revision: 1.12 $ |
| 6 |
* Version control file: $RCSfile: destroyinst.c,v $ |
| 7 |
* Date last modified: $Date: 1997/07/18 12:28:50 $ |
| 8 |
* Last modified by: $Author: mthomas $ |
| 9 |
* |
| 10 |
* This file is part of the Ascend Language Interpreter. |
| 11 |
* |
| 12 |
* Copyright (C) 1996 Ben Allan |
| 13 |
* based on instance.c |
| 14 |
* Copyright (C) 1990, 1993, 1994 Thomas Guthrie Epperly |
| 15 |
* |
| 16 |
* The Ascend Language Interpreter is free software; you can redistribute |
| 17 |
* it and/or modify it under the terms of the GNU General Public License as |
| 18 |
* published by the Free Software Foundation; either version 2 of the |
| 19 |
* License, or (at your option) any later version. |
| 20 |
* |
| 21 |
* The Ascend Language Interpreter is distributed in hope that it will be |
| 22 |
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 24 |
* General Public License for more details. |
| 25 |
* |
| 26 |
* You should have received a copy of the GNU General Public License |
| 27 |
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 28 |
*/ |
| 29 |
#include <stdarg.h> |
| 30 |
#include <ascend/general/platform.h> |
| 31 |
#include <ascend/general/panic.h> |
| 32 |
#include <ascend/general/ascMalloc.h> |
| 33 |
#include <ascend/general/pool.h> |
| 34 |
#include <ascend/general/list.h> |
| 35 |
#include <ascend/general/dstring.h> |
| 36 |
|
| 37 |
#include "symtab.h" |
| 38 |
#include "functype.h" |
| 39 |
#include "expr_types.h" |
| 40 |
#include "instance_name.h" |
| 41 |
#include "instance_io.h" |
| 42 |
#include "child.h" |
| 43 |
#include "type_desc.h" |
| 44 |
#include "instmacro.h" |
| 45 |
#include "instquery.h" |
| 46 |
#include "instance_types.h" |
| 47 |
#include "setinstval.h" |
| 48 |
#include "linkinst.h" |
| 49 |
#include "destroyinst.h" |
| 50 |
#include "arrayinst.h" |
| 51 |
#include "parentchild.h" |
| 52 |
#include "atomvalue.h" |
| 53 |
#include "atomsize.h" |
| 54 |
#include "check.h" |
| 55 |
#include "dump.h" |
| 56 |
#include "find.h" |
| 57 |
#include "type_desc.h" |
| 58 |
#include "prototype.h" |
| 59 |
#include "pending.h" |
| 60 |
#include "rel_blackbox.h" |
| 61 |
#include "vlist.h" |
| 62 |
#include "relation.h" |
| 63 |
#include "logical_relation.h" |
| 64 |
#include "logrelation.h" |
| 65 |
#include "relation_util.h" |
| 66 |
#include "logrel_util.h" |
| 67 |
#include "rel_common.h" |
| 68 |
#include "case.h" |
| 69 |
#include "when_util.h" |
| 70 |
#include "universal.h" |
| 71 |
#include "instance_types.h" |
| 72 |
#include "cmpfunc.h" |
| 73 |
#include "slvreq.h" |
| 74 |
|
| 75 |
|
| 76 |
static void DeleteIPtr(struct Instance *i){ |
| 77 |
assert(i&&InterfacePtrDelete); |
| 78 |
AssertMemory(i); |
| 79 |
switch(i->t) { |
| 80 |
case SIM_INST: |
| 81 |
slvreq_sim_destroy_hooks(i); |
| 82 |
(*InterfacePtrDelete)(i,SIM_INST(i)->interface_ptr); |
| 83 |
SIM_INST(i)->interface_ptr = NULL; |
| 84 |
return; |
| 85 |
case MODEL_INST: |
| 86 |
(*InterfacePtrDelete)(i,MOD_INST(i)->interface_ptr); |
| 87 |
MOD_INST(i)->interface_ptr = NULL; |
| 88 |
break; |
| 89 |
case REAL_ATOM_INST: |
| 90 |
(*InterfacePtrDelete)(i,RA_INST(i)->interface_ptr); |
| 91 |
RA_INST(i)->interface_ptr = NULL; |
| 92 |
break; |
| 93 |
case BOOLEAN_ATOM_INST: |
| 94 |
(*InterfacePtrDelete)(i,BA_INST(i)->interface_ptr); |
| 95 |
BA_INST(i)->interface_ptr = NULL; |
| 96 |
break; |
| 97 |
case INTEGER_ATOM_INST: |
| 98 |
(*InterfacePtrDelete)(i,IA_INST(i)->interface_ptr); |
| 99 |
IA_INST(i)->interface_ptr = NULL; |
| 100 |
break; |
| 101 |
case SET_ATOM_INST: |
| 102 |
(*InterfacePtrDelete)(i,SA_INST(i)->interface_ptr); |
| 103 |
SA_INST(i)->interface_ptr = NULL; |
| 104 |
break; |
| 105 |
case SYMBOL_ATOM_INST: |
| 106 |
(*InterfacePtrDelete)(i,SYMA_INST(i)->interface_ptr); |
| 107 |
SYMA_INST(i)->interface_ptr = NULL; |
| 108 |
break; |
| 109 |
case REL_INST: |
| 110 |
(*InterfacePtrDelete)(i,RELN_INST(i)->interface_ptr); |
| 111 |
RELN_INST(i)->interface_ptr = NULL; |
| 112 |
break; |
| 113 |
case LREL_INST: |
| 114 |
(*InterfacePtrDelete)(i,LRELN_INST(i)->interface_ptr); |
| 115 |
LRELN_INST(i)->interface_ptr = NULL; |
| 116 |
break; |
| 117 |
case WHEN_INST: |
| 118 |
(*InterfacePtrDelete)(i,W_INST(i)->interface_ptr); |
| 119 |
W_INST(i)->interface_ptr = NULL; |
| 120 |
break; |
| 121 |
/* constants */ |
| 122 |
case INTEGER_CONSTANT_INST: |
| 123 |
(*InterfacePtrDelete)(i,IC_INST(i)->interface_ptr); |
| 124 |
IC_INST(i)->interface_ptr = NULL; |
| 125 |
break; |
| 126 |
case BOOLEAN_CONSTANT_INST: |
| 127 |
(*InterfacePtrDelete)(i,BC_INST(i)->interface_ptr); |
| 128 |
BC_INST(i)->interface_ptr = NULL; |
| 129 |
break; |
| 130 |
case SYMBOL_CONSTANT_INST: |
| 131 |
(*InterfacePtrDelete)(i,SYMC_INST(i)->interface_ptr); |
| 132 |
SYMC_INST(i)->interface_ptr = NULL; |
| 133 |
break; |
| 134 |
case DUMMY_INST: |
| 135 |
(*InterfacePtrDelete)(i,D_INST(i)->interface_ptr); |
| 136 |
D_INST(i)->interface_ptr = NULL; |
| 137 |
break; |
| 138 |
case REAL_CONSTANT_INST: /* fall through */ |
| 139 |
/* arrays */ |
| 140 |
case ARRAY_INT_INST: /* fall through */ |
| 141 |
case ARRAY_ENUM_INST: /* fall through */ |
| 142 |
/* fundies */ |
| 143 |
case REAL_INST: /* fall through */ |
| 144 |
case INTEGER_INST: /* fall through */ |
| 145 |
case BOOLEAN_INST: /* fall through */ |
| 146 |
case SET_INST: /* fall through */ |
| 147 |
case SYMBOL_INST: /* fall through */ |
| 148 |
break; |
| 149 |
default: |
| 150 |
ASC_PANIC("Unknown instance type passed to DeleteIPtr.\n"); |
| 151 |
} |
| 152 |
} |
| 153 |
|
| 154 |
/** |
| 155 |
This never returns anything but 1 for DUMMY_INSTs. |
| 156 |
@return true value if inst should be deleted; otherwise, return 0. |
| 157 |
*/ |
| 158 |
static int RemoveParentReferences( |
| 159 |
struct Instance *inst, struct Instance *parent |
| 160 |
){ |
| 161 |
register unsigned long c,pos,length; |
| 162 |
AssertMemory(inst); |
| 163 |
if (parent!=NULL) { |
| 164 |
AssertMemory(parent); |
| 165 |
/* destroy link from inst to parent */ |
| 166 |
pos = SearchForParent(inst,parent); |
| 167 |
if (pos != 0 || inst->t == DUMMY_INST) { |
| 168 |
/* Because the dummy always 'adds' a parent, |
| 169 |
* it must always delete it to keep the ref_count happy. |
| 170 |
* Dummy knows of no parents, but knows |
| 171 |
* exactly how many it doesn't have. |
| 172 |
*/ |
| 173 |
DeleteParent(inst,pos); |
| 174 |
} |
| 175 |
/* destroy link(s) from parent to inst */ |
| 176 |
while (0 != (pos = ChildIndex(parent,inst))) { |
| 177 |
StoreChildPtr(parent,pos,NULL); |
| 178 |
} |
| 179 |
return (NumberParents(inst) == 0); |
| 180 |
} else { |
| 181 |
length = NumberParents(inst); |
| 182 |
if (inst->t == DUMMY_INST) { |
| 183 |
FPRINTF(ASCERR, |
| 184 |
"The global dummy instance cannot be destroyed w/out parental consent\n"); |
| 185 |
FPRINTF(ASCERR, "You should not be seeing this message.\n"); |
| 186 |
return 0; |
| 187 |
} |
| 188 |
for(c=1;c<=length;c++) { |
| 189 |
parent = InstanceParent(inst,c); |
| 190 |
while (0 != (pos = ChildIndex(parent,inst))) { |
| 191 |
StoreChildPtr(parent,pos,NULL); |
| 192 |
} |
| 193 |
} |
| 194 |
return 1; |
| 195 |
} |
| 196 |
} |
| 197 |
|
| 198 |
static void RemoveFromClique(struct Instance *inst){ |
| 199 |
register struct Instance *i,*hold; |
| 200 |
AssertMemory(inst); |
| 201 |
if ((hold=i=NextCliqueMember(inst))==inst) |
| 202 |
return; |
| 203 |
while (NextCliqueMember(i)!=inst) |
| 204 |
i = NextCliqueMember(i); |
| 205 |
switch(i->t) { |
| 206 |
case MODEL_INST: |
| 207 |
MOD_INST(i)->alike_ptr = hold; |
| 208 |
break; |
| 209 |
case REAL_CONSTANT_INST: |
| 210 |
RC_INST(i)->alike_ptr = hold; |
| 211 |
break; |
| 212 |
case BOOLEAN_CONSTANT_INST: |
| 213 |
BC_INST(i)->alike_ptr = hold; |
| 214 |
break; |
| 215 |
case INTEGER_CONSTANT_INST: |
| 216 |
IC_INST(i)->alike_ptr = hold; |
| 217 |
break; |
| 218 |
case SYMBOL_CONSTANT_INST: |
| 219 |
SYMC_INST(i)->alike_ptr = hold; |
| 220 |
break; |
| 221 |
case REAL_ATOM_INST: |
| 222 |
RA_INST(i)->alike_ptr = hold; |
| 223 |
break; |
| 224 |
case BOOLEAN_ATOM_INST: |
| 225 |
BA_INST(i)->alike_ptr = hold; |
| 226 |
break; |
| 227 |
case INTEGER_ATOM_INST: |
| 228 |
IA_INST(i)->alike_ptr = hold; |
| 229 |
break; |
| 230 |
case SET_ATOM_INST: |
| 231 |
SA_INST(i)->alike_ptr = hold; |
| 232 |
break; |
| 233 |
case SYMBOL_ATOM_INST: |
| 234 |
SYMA_INST(i)->alike_ptr = hold; |
| 235 |
break; |
| 236 |
default: |
| 237 |
Asc_Panic(2, "RemoveFromClique", |
| 238 |
"Invalid instance in clique found in RemoveFromClique.\n"); |
| 239 |
} |
| 240 |
} |
| 241 |
|
| 242 |
static void DeleteArrayChild(struct ArrayChild *acp, struct Instance *parent){ |
| 243 |
if ((acp!=NULL)&&(acp->inst!=NULL)) { |
| 244 |
AssertContainedMemory(acp,sizeof(struct ArrayChild)); |
| 245 |
DestroyInstance(acp->inst,parent); |
| 246 |
} |
| 247 |
} |
| 248 |
|
| 249 |
/** |
| 250 |
Take an ATOM and tell all the relations that know about it to |
| 251 |
forget it, then destroy the list that identifies those relations. |
| 252 |
After this, a real ATOM can be safely deleted if there are no models |
| 253 |
refering to it. |
| 254 |
*/ |
| 255 |
static void RemoveRelationLinks(struct Instance *i, struct gl_list_t *list){ |
| 256 |
register unsigned long c,length; |
| 257 |
assert(list!=NULL); |
| 258 |
length = gl_length(list); |
| 259 |
for(c=1;c<=length;c++) { |
| 260 |
ChangeRelationPointers(INST(gl_fetch(list,c)),i,INST(NULL)); |
| 261 |
} |
| 262 |
gl_destroy(list); |
| 263 |
} |
| 264 |
|
| 265 |
|
| 266 |
/** |
| 267 |
Take a BOOLEAN ATOM, REL or LOGREL and tell all the logrelations that |
| 268 |
know about them to forget them, then destroy the list that identifies |
| 269 |
those logrelations. |
| 270 |
After this, the ATOM, REL or LOGREL can be deleted if there are no |
| 271 |
models or whens refering to it. |
| 272 |
*/ |
| 273 |
static |
| 274 |
void RemoveLogRelLinks(struct Instance *i, struct gl_list_t *list) |
| 275 |
{ |
| 276 |
register unsigned long c,length; |
| 277 |
assert(list!=NULL); |
| 278 |
length = gl_length(list); |
| 279 |
for(c=1;c<=length;c++) { |
| 280 |
ChangeLogRelPointers(INST(gl_fetch(list,c)),i,INST(NULL)); |
| 281 |
} |
| 282 |
gl_destroy(list); |
| 283 |
} |
| 284 |
|
| 285 |
|
| 286 |
static |
| 287 |
void RemoveWhenLinks(struct Instance *i, struct gl_list_t *list) |
| 288 |
{ |
| 289 |
register unsigned long c,length; |
| 290 |
assert(list!=NULL); |
| 291 |
length = gl_length(list); |
| 292 |
for(c=1;c<=length;c++) { |
| 293 |
ChangeWhenPointers(INST(gl_fetch(list,c)),i,INST(NULL)); |
| 294 |
} |
| 295 |
gl_destroy(list); |
| 296 |
} |
| 297 |
|
| 298 |
static void DestroyAtomChildren( |
| 299 |
register struct Instance **i, register unsigned long int nc |
| 300 |
){ |
| 301 |
while(nc-- > 0){ |
| 302 |
AssertMemory(i); |
| 303 |
AssertMemory(*i); |
| 304 |
if ((*i)->t==SET_INST) { |
| 305 |
if (S_INST(*i)->list!=NULL) { |
| 306 |
DestroySet(S_INST(*i)->list); |
| 307 |
} |
| 308 |
} |
| 309 |
i++; /* position pointer for next child */ |
| 310 |
} |
| 311 |
} |
| 312 |
|
| 313 |
/* |
| 314 |
should only be called when there areno more references |
| 315 |
to the object. |
| 316 |
*/ |
| 317 |
static void DestroyInstanceParts(struct Instance *i){ |
| 318 |
register unsigned long c,length; |
| 319 |
register struct gl_list_t *l; |
| 320 |
struct Instance *child; |
| 321 |
AssertMemory(i); |
| 322 |
switch(i->t) { |
| 323 |
case SIM_INST: |
| 324 |
child = InstanceChild(i,1); /* one child only */ |
| 325 |
DestroyInstance(child,i); |
| 326 |
SIM_INST(i)->name = NULL; /* main symbol table owns the string */ |
| 327 |
SIM_INST(i)->extvars = NULL; |
| 328 |
i->t = ERROR_INST; |
| 329 |
DeleteTypeDesc(SIM_INST(i)->desc); |
| 330 |
SIM_INST(i)->desc = NULL; |
| 331 |
ascfree((char *)i); |
| 332 |
return; |
| 333 |
case MODEL_INST: |
| 334 |
gl_destroy(MOD_INST(i)->parents); |
| 335 |
MOD_INST(i)->parents = NULL; |
| 336 |
MOD_INST(i)->alike_ptr = NULL; |
| 337 |
if (MOD_INST(i)->whens!=NULL) { |
| 338 |
RemoveWhenLinks(i,MOD_INST(i)->whens); |
| 339 |
MOD_INST(i)->whens=NULL; |
| 340 |
} |
| 341 |
DestroyBList(MOD_INST(i)->executed); |
| 342 |
MOD_INST(i)->executed = NULL; |
| 343 |
/* destroy reference to children */ |
| 344 |
length = NumberChildren(i); |
| 345 |
for(c=1;c<=length;c++) { |
| 346 |
child = InstanceChild(i,c); |
| 347 |
DestroyInstance(child,i); |
| 348 |
} |
| 349 |
i->t = ERROR_INST; |
| 350 |
DeleteTypeDesc(MOD_INST(i)->desc); |
| 351 |
MOD_INST(i)->desc = NULL; |
| 352 |
gl_destroy(MOD_INST(i)->link_table); |
| 353 |
ascfree((char *)i); |
| 354 |
return; |
| 355 |
case REAL_CONSTANT_INST: |
| 356 |
/* continue delete the atom */ |
| 357 |
gl_destroy(RC_INST(i)->parents); |
| 358 |
RC_INST(i)->parents = NULL; |
| 359 |
DeleteTypeDesc(RC_INST(i)->desc); |
| 360 |
RC_INST(i)->desc = NULL; |
| 361 |
RC_INST(i)->alike_ptr = NULL; |
| 362 |
/* children are automatically deleted by the following */ |
| 363 |
i->t = ERROR_INST; |
| 364 |
ascfree((char *)i); |
| 365 |
return; |
| 366 |
case BOOLEAN_CONSTANT_INST: |
| 367 |
gl_destroy(BC_INST(i)->parents); |
| 368 |
BC_INST(i)->parents = NULL; |
| 369 |
DeleteTypeDesc(BC_INST(i)->desc); |
| 370 |
BC_INST(i)->desc = NULL; |
| 371 |
BC_INST(i)->alike_ptr = NULL; |
| 372 |
if (BC_INST(i)->whens!=NULL) { |
| 373 |
RemoveWhenLinks(i,BC_INST(i)->whens); |
| 374 |
BC_INST(i)->whens=NULL; |
| 375 |
} |
| 376 |
i->t = ERROR_INST; |
| 377 |
ascfree((char *)i); |
| 378 |
return; |
| 379 |
case INTEGER_CONSTANT_INST: |
| 380 |
gl_destroy(IC_INST(i)->parents); |
| 381 |
IC_INST(i)->parents = NULL; |
| 382 |
DeleteTypeDesc(IC_INST(i)->desc); |
| 383 |
IC_INST(i)->desc = NULL; |
| 384 |
IC_INST(i)->alike_ptr = NULL; |
| 385 |
if (IC_INST(i)->whens!=NULL) { |
| 386 |
RemoveWhenLinks(i,IC_INST(i)->whens); |
| 387 |
IC_INST(i)->whens=NULL; |
| 388 |
} |
| 389 |
i->t = ERROR_INST; |
| 390 |
ascfree((char *)i); |
| 391 |
return; |
| 392 |
case SYMBOL_CONSTANT_INST: |
| 393 |
gl_destroy(SYMC_INST(i)->parents); |
| 394 |
SYMC_INST(i)->parents = NULL; |
| 395 |
DeleteTypeDesc(SYMC_INST(i)->desc); |
| 396 |
SYMC_INST(i)->desc = NULL; |
| 397 |
SYMC_INST(i)->alike_ptr = NULL; |
| 398 |
SYMC_INST(i)->value = NULL; |
| 399 |
if (SYMC_INST(i)->whens!=NULL) { |
| 400 |
RemoveWhenLinks(i,SYMC_INST(i)->whens); |
| 401 |
SYMC_INST(i)->whens=NULL; |
| 402 |
} |
| 403 |
i->t = ERROR_INST; |
| 404 |
ascfree((char *)i); |
| 405 |
return; |
| 406 |
case REAL_ATOM_INST: |
| 407 |
/* deallocate dynamic memory used by children */ |
| 408 |
DestroyAtomChildren(RA_CHILD(i,0), |
| 409 |
ChildListLen(GetChildList(RA_INST(i)->desc))); |
| 410 |
/* continue delete the atom */ |
| 411 |
gl_destroy(RA_INST(i)->parents); |
| 412 |
RA_INST(i)->parents = NULL; |
| 413 |
DeleteTypeDesc(RA_INST(i)->desc); |
| 414 |
RA_INST(i)->desc = NULL; |
| 415 |
RA_INST(i)->alike_ptr = NULL; |
| 416 |
if (RA_INST(i)->relations!=NULL) { |
| 417 |
RemoveRelationLinks(i,RA_INST(i)->relations); |
| 418 |
RA_INST(i)->relations=NULL; |
| 419 |
} |
| 420 |
/* children are automatically deleted by the following */ |
| 421 |
i->t = ERROR_INST; |
| 422 |
ascfree((char *)i); |
| 423 |
return; |
| 424 |
case BOOLEAN_ATOM_INST: |
| 425 |
/* deallocate dynamic memory used by children */ |
| 426 |
DestroyAtomChildren(BA_CHILD(i,0), |
| 427 |
ChildListLen(GetChildList(BA_INST(i)->desc))); |
| 428 |
/* continue delete the atom */ |
| 429 |
gl_destroy(BA_INST(i)->parents); |
| 430 |
BA_INST(i)->parents = NULL; |
| 431 |
DeleteTypeDesc(BA_INST(i)->desc); |
| 432 |
BA_INST(i)->desc = NULL; |
| 433 |
BA_INST(i)->alike_ptr = NULL; |
| 434 |
if (BA_INST(i)->logrelations!=NULL) |
| 435 |
RemoveLogRelLinks(i,BA_INST(i)->logrelations); |
| 436 |
if (BA_INST(i)->whens!=NULL) { |
| 437 |
RemoveWhenLinks(i,BA_INST(i)->whens); |
| 438 |
BA_INST(i)->whens=NULL; |
| 439 |
} |
| 440 |
i->t = ERROR_INST; |
| 441 |
/* children are automatically deleted by the following */ |
| 442 |
ascfree((char *)i); |
| 443 |
return; |
| 444 |
case INTEGER_ATOM_INST: |
| 445 |
/* deallocate dynamic memory used by children */ |
| 446 |
DestroyAtomChildren(IA_CHILD(i,0), |
| 447 |
ChildListLen(GetChildList(IA_INST(i)->desc))); |
| 448 |
/* continue delete the atom */ |
| 449 |
gl_destroy(IA_INST(i)->parents); |
| 450 |
IA_INST(i)->parents = NULL; |
| 451 |
DeleteTypeDesc(IA_INST(i)->desc); |
| 452 |
IA_INST(i)->desc = NULL; |
| 453 |
IA_INST(i)->alike_ptr = NULL; |
| 454 |
if (IA_INST(i)->whens!=NULL) { |
| 455 |
RemoveWhenLinks(i,IA_INST(i)->whens); |
| 456 |
IA_INST(i)->whens=NULL; |
| 457 |
} |
| 458 |
i->t = ERROR_INST; |
| 459 |
/* children are automatically deleted by the following */ |
| 460 |
ascfree((char *)i); |
| 461 |
return; |
| 462 |
case SET_ATOM_INST: |
| 463 |
/* deallocate dynamic memory used by children */ |
| 464 |
DestroyAtomChildren(SA_CHILD(i,0), |
| 465 |
ChildListLen(GetChildList(SA_INST(i)->desc))); |
| 466 |
/* continue delete the atom */ |
| 467 |
gl_destroy(SA_INST(i)->parents); |
| 468 |
SA_INST(i)->parents = NULL; |
| 469 |
DeleteTypeDesc(SA_INST(i)->desc); |
| 470 |
SA_INST(i)->desc = NULL; |
| 471 |
SA_INST(i)->alike_ptr = NULL; |
| 472 |
if (SA_INST(i)->list != NULL) |
| 473 |
DestroySet(SA_INST(i)->list); |
| 474 |
i->t = ERROR_INST; |
| 475 |
ascfree((char *)i); |
| 476 |
return; |
| 477 |
case SYMBOL_ATOM_INST: |
| 478 |
/* deallocate dynamic memory used by children */ |
| 479 |
DestroyAtomChildren(SYMA_CHILD(i,0), |
| 480 |
ChildListLen(GetChildList(SYMA_INST(i)->desc))); |
| 481 |
/* continue to delete the atom */ |
| 482 |
gl_destroy(SYMA_INST(i)->parents); |
| 483 |
SYMA_INST(i)->parents = NULL; |
| 484 |
DeleteTypeDesc(SYMA_INST(i)->desc); |
| 485 |
SYMA_INST(i)->desc = NULL; |
| 486 |
SYMA_INST(i)->alike_ptr = NULL; |
| 487 |
if (SYMA_INST(i)->whens!=NULL) { |
| 488 |
RemoveWhenLinks(i,SYMA_INST(i)->whens); |
| 489 |
SYMA_INST(i)->whens = NULL; |
| 490 |
} |
| 491 |
SYMA_INST(i)->value = NULL; |
| 492 |
i->t = ERROR_INST; |
| 493 |
ascfree((char *)i); |
| 494 |
return; |
| 495 |
case REL_INST: |
| 496 |
/* deallocate dynamic memory used by children */ |
| 497 |
DestroyAtomChildren(REL_CHILD(i,0), |
| 498 |
ChildListLen(GetChildList(RELN_INST(i)->desc))); |
| 499 |
/* continue deleting the relation */ |
| 500 |
DeleteTypeDesc(RELN_INST(i)->desc); |
| 501 |
RELN_INST(i)->desc = NULL; |
| 502 |
RELN_INST(i)->parent[0] = NULL; |
| 503 |
RELN_INST(i)->parent[1] = NULL; |
| 504 |
if (RELN_INST(i)->logrels!=NULL) { |
| 505 |
RemoveLogRelLinks(i,RELN_INST(i)->logrels); |
| 506 |
RELN_INST(i)->logrels=NULL; |
| 507 |
} |
| 508 |
if (RELN_INST(i)->whens!=NULL) { |
| 509 |
RemoveWhenLinks(i,RELN_INST(i)->whens); |
| 510 |
RELN_INST(i)->whens=NULL; |
| 511 |
} |
| 512 |
/* delete references of reals to this expression */ |
| 513 |
if (RELN_INST(i)->ptr != NULL){ |
| 514 |
/*CONSOLE_DEBUG("Destroying relation at %p",RELN_INST(i)->ptr);*/ |
| 515 |
DestroyRelation(RELN_INST(i)->ptr,i); |
| 516 |
RELN_INST(i)->ptr = NULL; |
| 517 |
} |
| 518 |
/* after relation has been destroyed */ |
| 519 |
if(RELN_INST(i)->ptr != NULL){ |
| 520 |
ERROR_REPORTER_HERE(ASC_PROG_ERR,"Rel ptr not null where expected"); |
| 521 |
} |
| 522 |
i->t = ERROR_INST; |
| 523 |
ascfree((char *)i); |
| 524 |
return; |
| 525 |
case LREL_INST: |
| 526 |
DestroyAtomChildren(LREL_CHILD(i,0), |
| 527 |
ChildListLen(GetChildList(LRELN_INST(i)->desc))); |
| 528 |
DeleteTypeDesc(LRELN_INST(i)->desc); |
| 529 |
LRELN_INST(i)->desc = NULL; |
| 530 |
LRELN_INST(i)->parent[0] = NULL; |
| 531 |
LRELN_INST(i)->parent[1] = NULL; |
| 532 |
if (LRELN_INST(i)->logrels!=NULL) { |
| 533 |
RemoveLogRelLinks(i,LRELN_INST(i)->logrels); |
| 534 |
LRELN_INST(i)->logrels=NULL; |
| 535 |
} |
| 536 |
if (LRELN_INST(i)->whens!=NULL) { |
| 537 |
RemoveWhenLinks(i,LRELN_INST(i)->whens); |
| 538 |
LRELN_INST(i)->whens=NULL; |
| 539 |
} |
| 540 |
if (LRELN_INST(i)->ptr != NULL){ |
| 541 |
DestroyLogRelation(LRELN_INST(i)->ptr,i); |
| 542 |
LRELN_INST(i)->ptr = NULL; |
| 543 |
} |
| 544 |
LRELN_INST(i)->ptr = NULL; |
| 545 |
i->t = ERROR_INST; |
| 546 |
ascfree((char *)i); |
| 547 |
return; |
| 548 |
case WHEN_INST: |
| 549 |
DeleteTypeDesc(W_INST(i)->desc); |
| 550 |
W_INST(i)->desc = NULL; |
| 551 |
W_INST(i)->parent[0] = NULL; |
| 552 |
W_INST(i)->parent[1] = NULL; |
| 553 |
if (W_INST(i)->whens!=NULL) { |
| 554 |
RemoveWhenLinks(i,W_INST(i)->whens); |
| 555 |
W_INST(i)->whens=NULL; |
| 556 |
} |
| 557 |
if (W_INST(i)->bvar!=NULL) { |
| 558 |
DestroyWhenVarList(W_INST(i)->bvar,i); |
| 559 |
W_INST(i)->bvar = NULL; |
| 560 |
} |
| 561 |
if (W_INST(i)->cases!=NULL) { |
| 562 |
DestroyWhenCaseList(W_INST(i)->cases,i); |
| 563 |
W_INST(i)->cases = NULL; |
| 564 |
} |
| 565 |
i->t = ERROR_INST; |
| 566 |
ascfree((char *)i); |
| 567 |
return; |
| 568 |
case ARRAY_INT_INST: |
| 569 |
case ARRAY_ENUM_INST: |
| 570 |
DeleteTypeDesc(ARY_INST(i)->desc); |
| 571 |
gl_destroy(ARY_INST(i)->parents); |
| 572 |
ARY_INST(i)->parents = NULL; |
| 573 |
l = ARY_INST(i)->children; |
| 574 |
if (l!=NULL){ |
| 575 |
length = gl_length(l); |
| 576 |
for (c=1; c <= length; c++) { |
| 577 |
DeleteArrayChild((struct ArrayChild *)gl_fetch(l,c),i); |
| 578 |
FREEPOOLAC(gl_fetch(l,c)); |
| 579 |
} |
| 580 |
gl_destroy(l); |
| 581 |
} |
| 582 |
ARY_INST(i)->children = NULL; |
| 583 |
i->t = ERROR_INST; |
| 584 |
ascfree((char *)i); |
| 585 |
return; |
| 586 |
case REAL_INST: |
| 587 |
i->t = ERROR_INST; |
| 588 |
return; |
| 589 |
case INTEGER_INST: |
| 590 |
i->t = ERROR_INST; |
| 591 |
return; |
| 592 |
case BOOLEAN_INST: |
| 593 |
i->t = ERROR_INST; |
| 594 |
return; |
| 595 |
case SET_INST: |
| 596 |
if (S_INST(i)->list!=NULL) |
| 597 |
DestroySet(S_INST(i)->list); |
| 598 |
i->t = ERROR_INST; |
| 599 |
return; |
| 600 |
case SYMBOL_INST: |
| 601 |
i->t = ERROR_INST; |
| 602 |
return; |
| 603 |
case DUMMY_INST: |
| 604 |
/* no parts */ |
| 605 |
DeleteTypeDesc(D_INST(i)->desc); |
| 606 |
i->t = ERROR_INST; |
| 607 |
ascfree((char *)i); |
| 608 |
return; |
| 609 |
default: |
| 610 |
Asc_Panic(2, "DeleteInstance", |
| 611 |
"Unknown type of instance passed to DeleteInstance.\n"); |
| 612 |
} |
| 613 |
} |
| 614 |
|
| 615 |
void DestroyInstance(struct Instance *inst, struct Instance *parent){ |
| 616 |
struct TypeDescription *desc; |
| 617 |
int delete; |
| 618 |
if(inst==NULL) return; |
| 619 |
|
| 620 |
if(InterfacePtrDelete!=NULL){ |
| 621 |
DeleteIPtr(inst); |
| 622 |
} |
| 623 |
delete = RemoveParentReferences(inst,parent); |
| 624 |
if(delete){ |
| 625 |
if (inst->t != DUMMY_INST){ |
| 626 |
desc = InstanceTypeDesc(inst); |
| 627 |
if(GetUniversalFlag(desc)){ /* universal is being deleted */ |
| 628 |
RemoveUniversalInstance(GetUniversalTable(),inst); |
| 629 |
} |
| 630 |
if(IsCompoundInstance(inst) && |
| 631 |
InstanceKind(inst) != SIM_INST && |
| 632 |
((struct PendInstance *)(inst))->p != NULL |
| 633 |
){ |
| 634 |
RemoveInstance(inst); |
| 635 |
} |
| 636 |
/* remove PENDING or maybe not pending instance in destroy process. */ |
| 637 |
RemoveFromClique(inst); |
| 638 |
DestroyInstanceParts(inst); |
| 639 |
}else{ |
| 640 |
if(D_INST(inst)->ref_count<2){ |
| 641 |
desc = InstanceTypeDesc(inst); |
| 642 |
if(GetUniversalFlag(desc)){ /* universal is being deleted */ |
| 643 |
RemoveUniversalInstance(GetUniversalTable(),inst); |
| 644 |
} |
| 645 |
/* dummy is never in cliques or pending */ |
| 646 |
DestroyInstanceParts(inst); |
| 647 |
} |
| 648 |
} |
| 649 |
} |
| 650 |
} |
| 651 |
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