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| a0d0e21e |
1 | /* scope.c |
| 79072805 |
2 | * |
| a0d0e21e |
3 | * Copyright (c) 1991-1994, Larry Wall |
| 79072805 |
4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| a0d0e21e |
8 | */ |
| 9 | |
| 10 | /* |
| 11 | * "For the fashion of Minas Tirith was such that it was built on seven |
| 12 | * levels..." |
| 79072805 |
13 | */ |
| 14 | |
| 15 | #include "EXTERN.h" |
| 16 | #include "perl.h" |
| 17 | |
| a0d0e21e |
18 | SV** |
| 19 | stack_grow(sp, p, n) |
| 20 | SV** sp; |
| 21 | SV** p; |
| 22 | int n; |
| 23 | { |
| 24 | stack_sp = sp; |
| 25 | av_extend(stack, (p - stack_base) + (n) + 128); |
| a0d0e21e |
26 | return stack_sp; |
| 27 | } |
| 28 | |
| 79072805 |
29 | I32 |
| 30 | cxinc() |
| 31 | { |
| 32 | cxstack_max = cxstack_max * 3 / 2; |
| 33 | Renew(cxstack, cxstack_max, CONTEXT); |
| 34 | return cxstack_ix + 1; |
| 35 | } |
| 36 | |
| 37 | void |
| 38 | push_return(retop) |
| 39 | OP *retop; |
| 40 | { |
| 41 | if (retstack_ix == retstack_max) { |
| 42 | retstack_max = retstack_max * 3 / 2; |
| 43 | Renew(retstack, retstack_max, OP*); |
| 44 | } |
| 45 | retstack[retstack_ix++] = retop; |
| 46 | } |
| 47 | |
| 48 | OP * |
| 49 | pop_return() |
| 50 | { |
| 51 | if (retstack_ix > 0) |
| 52 | return retstack[--retstack_ix]; |
| 53 | else |
| 54 | return Nullop; |
| 55 | } |
| 56 | |
| 57 | void |
| 58 | push_scope() |
| 59 | { |
| 60 | if (scopestack_ix == scopestack_max) { |
| 61 | scopestack_max = scopestack_max * 3 / 2; |
| 62 | Renew(scopestack, scopestack_max, I32); |
| 63 | } |
| 64 | scopestack[scopestack_ix++] = savestack_ix; |
| 65 | |
| 66 | } |
| 67 | |
| 68 | void |
| 69 | pop_scope() |
| 70 | { |
| 71 | I32 oldsave = scopestack[--scopestack_ix]; |
| 8990e307 |
72 | LEAVE_SCOPE(oldsave); |
| 79072805 |
73 | } |
| 74 | |
| 75 | void |
| a0d0e21e |
76 | markstack_grow() |
| 77 | { |
| 78 | I32 oldmax = markstack_max - markstack; |
| 79 | I32 newmax = oldmax * 3 / 2; |
| 80 | |
| 81 | Renew(markstack, newmax, I32); |
| 82 | markstack_ptr = markstack + oldmax; |
| 83 | markstack_max = markstack + newmax; |
| 84 | } |
| 85 | |
| 86 | void |
| 79072805 |
87 | savestack_grow() |
| 88 | { |
| 89 | savestack_max = savestack_max * 3 / 2; |
| 90 | Renew(savestack, savestack_max, ANY); |
| 91 | } |
| 92 | |
| 93 | void |
| 94 | free_tmps() |
| 95 | { |
| 96 | /* XXX should tmps_floor live in cxstack? */ |
| 97 | I32 myfloor = tmps_floor; |
| 98 | while (tmps_ix > myfloor) { /* clean up after last statement */ |
| 99 | SV* sv = tmps_stack[tmps_ix]; |
| 100 | tmps_stack[tmps_ix--] = Nullsv; |
| 463ee0b2 |
101 | if (sv) { |
| 102 | #ifdef DEBUGGING |
| 103 | SvTEMP_off(sv); |
| 104 | #endif |
| 8990e307 |
105 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
| 463ee0b2 |
106 | } |
| 79072805 |
107 | } |
| 108 | } |
| 109 | |
| 110 | SV * |
| 111 | save_scalar(gv) |
| 112 | GV *gv; |
| 113 | { |
| 114 | register SV *sv; |
| 115 | SV *osv = GvSV(gv); |
| 116 | |
| 117 | SSCHECK(3); |
| 118 | SSPUSHPTR(gv); |
| 119 | SSPUSHPTR(osv); |
| 120 | SSPUSHINT(SAVEt_SV); |
| 121 | |
| 122 | sv = GvSV(gv) = NEWSV(0,0); |
| a0d0e21e |
123 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
| 79072805 |
124 | sv_upgrade(sv, SvTYPE(osv)); |
| a0d0e21e |
125 | if (SvGMAGICAL(osv)) { |
| 748a9306 |
126 | MAGIC* mg; |
| 127 | bool oldtainted = tainted; |
| a0d0e21e |
128 | mg_get(osv); |
| 748a9306 |
129 | if (tainting && tainted && (mg = mg_find(osv, 't'))) { |
| 130 | SAVESPTR(mg->mg_obj); |
| 131 | mg->mg_obj = osv; |
| 132 | } |
| a0d0e21e |
133 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
| 134 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
| 748a9306 |
135 | tainted = oldtainted; |
| a0d0e21e |
136 | } |
| 79072805 |
137 | SvMAGIC(sv) = SvMAGIC(osv); |
| a0d0e21e |
138 | SvFLAGS(sv) |= SvMAGICAL(osv); |
| 748a9306 |
139 | localizing = 1; |
| 79072805 |
140 | SvSETMAGIC(sv); |
| 748a9306 |
141 | localizing = 0; |
| 79072805 |
142 | } |
| 143 | return sv; |
| 144 | } |
| 145 | |
| 146 | #ifdef INLINED_ELSEWHERE |
| 147 | void |
| 148 | save_gp(gv) |
| 149 | GV *gv; |
| 150 | { |
| 151 | register GP *gp; |
| 152 | GP *ogp = GvGP(gv); |
| 153 | |
| 154 | SSCHECK(3); |
| 4633a7c4 |
155 | SSPUSHPTR(SvREFCNT_inc(gv)); |
| 79072805 |
156 | SSPUSHPTR(ogp); |
| 157 | SSPUSHINT(SAVEt_GP); |
| 158 | |
| 159 | Newz(602,gp, 1, GP); |
| 160 | GvGP(gv) = gp; |
| 161 | GvREFCNT(gv) = 1; |
| 162 | GvSV(gv) = NEWSV(72,0); |
| 163 | GvLINE(gv) = curcop->cop_line; |
| 164 | GvEGV(gv) = gv; |
| 165 | } |
| 166 | #endif |
| 167 | |
| 168 | SV* |
| 169 | save_svref(sptr) |
| 170 | SV **sptr; |
| 171 | { |
| 172 | register SV *sv; |
| 173 | SV *osv = *sptr; |
| 174 | |
| 175 | SSCHECK(3); |
| 176 | SSPUSHPTR(*sptr); |
| 177 | SSPUSHPTR(sptr); |
| 178 | SSPUSHINT(SAVEt_SVREF); |
| 179 | |
| 180 | sv = *sptr = NEWSV(0,0); |
| a0d0e21e |
181 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
| 79072805 |
182 | sv_upgrade(sv, SvTYPE(osv)); |
| a0d0e21e |
183 | if (SvGMAGICAL(osv)) { |
| 748a9306 |
184 | MAGIC* mg; |
| 185 | bool oldtainted = tainted; |
| a0d0e21e |
186 | mg_get(osv); |
| 748a9306 |
187 | if (tainting && tainted && (mg = mg_find(osv, 't'))) { |
| 188 | SAVESPTR(mg->mg_obj); |
| 189 | mg->mg_obj = osv; |
| 190 | } |
| a0d0e21e |
191 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
| 192 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
| 748a9306 |
193 | tainted = oldtainted; |
| a0d0e21e |
194 | } |
| 79072805 |
195 | SvMAGIC(sv) = SvMAGIC(osv); |
| a0d0e21e |
196 | SvFLAGS(sv) |= SvMAGICAL(osv); |
| 748a9306 |
197 | localizing = 1; |
| 79072805 |
198 | SvSETMAGIC(sv); |
| 748a9306 |
199 | localizing = 0; |
| 79072805 |
200 | } |
| 201 | return sv; |
| 202 | } |
| 203 | |
| 204 | AV * |
| 205 | save_ary(gv) |
| 206 | GV *gv; |
| 207 | { |
| 208 | SSCHECK(3); |
| 209 | SSPUSHPTR(gv); |
| 210 | SSPUSHPTR(GvAVn(gv)); |
| 211 | SSPUSHINT(SAVEt_AV); |
| 212 | |
| 213 | GvAV(gv) = Null(AV*); |
| 214 | return GvAVn(gv); |
| 215 | } |
| 216 | |
| 217 | HV * |
| 218 | save_hash(gv) |
| 219 | GV *gv; |
| 220 | { |
| 221 | SSCHECK(3); |
| 222 | SSPUSHPTR(gv); |
| 223 | SSPUSHPTR(GvHVn(gv)); |
| 224 | SSPUSHINT(SAVEt_HV); |
| 225 | |
| 226 | GvHV(gv) = Null(HV*); |
| 227 | return GvHVn(gv); |
| 228 | } |
| 229 | |
| 230 | void |
| 231 | save_item(item) |
| 232 | register SV *item; |
| 233 | { |
| 234 | register SV *sv; |
| 235 | |
| 236 | SSCHECK(3); |
| 237 | SSPUSHPTR(item); /* remember the pointer */ |
| 238 | sv = NEWSV(0,0); |
| 239 | sv_setsv(sv,item); |
| 240 | SSPUSHPTR(sv); /* remember the value */ |
| 241 | SSPUSHINT(SAVEt_ITEM); |
| 242 | } |
| 243 | |
| 244 | void |
| 245 | save_int(intp) |
| 246 | int *intp; |
| 247 | { |
| 248 | SSCHECK(3); |
| 249 | SSPUSHINT(*intp); |
| 250 | SSPUSHPTR(intp); |
| 251 | SSPUSHINT(SAVEt_INT); |
| 252 | } |
| 253 | |
| 254 | void |
| 85e6fe83 |
255 | save_long(longp) |
| 256 | long *longp; |
| 257 | { |
| 258 | SSCHECK(3); |
| 259 | SSPUSHLONG(*longp); |
| 260 | SSPUSHPTR(longp); |
| 261 | SSPUSHINT(SAVEt_LONG); |
| 262 | } |
| 263 | |
| 264 | void |
| 79072805 |
265 | save_I32(intp) |
| 266 | I32 *intp; |
| 267 | { |
| 268 | SSCHECK(3); |
| 269 | SSPUSHINT(*intp); |
| 270 | SSPUSHPTR(intp); |
| 271 | SSPUSHINT(SAVEt_I32); |
| 272 | } |
| 273 | |
| a0d0e21e |
274 | void |
| 275 | save_iv(ivp) |
| 276 | IV *ivp; |
| 277 | { |
| 278 | SSCHECK(3); |
| 4aa0a1f7 |
279 | SSPUSHIV(*ivp); |
| a0d0e21e |
280 | SSPUSHPTR(ivp); |
| 281 | SSPUSHINT(SAVEt_IV); |
| 282 | } |
| 283 | |
| 85e6fe83 |
284 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
| 285 | * force word-alignment and we'll miss the pointer. |
| 286 | */ |
| 287 | void |
| 288 | save_pptr(pptr) |
| 289 | char **pptr; |
| 290 | { |
| 291 | SSCHECK(3); |
| 292 | SSPUSHPTR(*pptr); |
| 293 | SSPUSHPTR(pptr); |
| 294 | SSPUSHINT(SAVEt_PPTR); |
| 295 | } |
| 296 | |
| 79072805 |
297 | void |
| 298 | save_sptr(sptr) |
| 299 | SV **sptr; |
| 300 | { |
| 301 | SSCHECK(3); |
| 302 | SSPUSHPTR(*sptr); |
| 303 | SSPUSHPTR(sptr); |
| 304 | SSPUSHINT(SAVEt_SPTR); |
| 305 | } |
| 306 | |
| 307 | void |
| 308 | save_nogv(gv) |
| 309 | GV *gv; |
| 310 | { |
| 311 | SSCHECK(2); |
| 312 | SSPUSHPTR(gv); |
| 313 | SSPUSHINT(SAVEt_NSTAB); |
| 314 | } |
| 315 | |
| 316 | void |
| 317 | save_hptr(hptr) |
| 318 | HV **hptr; |
| 319 | { |
| 320 | SSCHECK(3); |
| 85e6fe83 |
321 | SSPUSHPTR(*hptr); |
| 79072805 |
322 | SSPUSHPTR(hptr); |
| 323 | SSPUSHINT(SAVEt_HPTR); |
| 324 | } |
| 325 | |
| 326 | void |
| 327 | save_aptr(aptr) |
| 328 | AV **aptr; |
| 329 | { |
| 330 | SSCHECK(3); |
| 85e6fe83 |
331 | SSPUSHPTR(*aptr); |
| 79072805 |
332 | SSPUSHPTR(aptr); |
| 333 | SSPUSHINT(SAVEt_APTR); |
| 334 | } |
| 335 | |
| 336 | void |
| 8990e307 |
337 | save_freesv(sv) |
| 338 | SV *sv; |
| 339 | { |
| 340 | SSCHECK(2); |
| 341 | SSPUSHPTR(sv); |
| 342 | SSPUSHINT(SAVEt_FREESV); |
| 343 | } |
| 344 | |
| 345 | void |
| 346 | save_freeop(op) |
| 347 | OP *op; |
| 348 | { |
| 349 | SSCHECK(2); |
| 350 | SSPUSHPTR(op); |
| 351 | SSPUSHINT(SAVEt_FREEOP); |
| 352 | } |
| 353 | |
| 354 | void |
| 355 | save_freepv(pv) |
| 356 | char *pv; |
| 357 | { |
| 358 | SSCHECK(2); |
| 359 | SSPUSHPTR(pv); |
| 360 | SSPUSHINT(SAVEt_FREEPV); |
| 361 | } |
| 362 | |
| 363 | void |
| 364 | save_clearsv(svp) |
| 365 | SV** svp; |
| 366 | { |
| 367 | SSCHECK(2); |
| 4aa0a1f7 |
368 | SSPUSHLONG((long)(svp-curpad)); |
| 8990e307 |
369 | SSPUSHINT(SAVEt_CLEARSV); |
| 370 | } |
| 371 | |
| 372 | void |
| 373 | save_delete(hv,key,klen) |
| 374 | HV *hv; |
| 375 | char *key; |
| 376 | I32 klen; |
| 377 | { |
| 378 | SSCHECK(4); |
| 379 | SSPUSHINT(klen); |
| 380 | SSPUSHPTR(key); |
| 381 | SSPUSHPTR(hv); |
| 382 | SSPUSHINT(SAVEt_DELETE); |
| 383 | } |
| 384 | |
| 385 | void |
| 79072805 |
386 | save_list(sarg,maxsarg) |
| 387 | register SV **sarg; |
| 388 | I32 maxsarg; |
| 389 | { |
| 390 | register SV *sv; |
| 391 | register I32 i; |
| 392 | |
| 393 | SSCHECK(3 * maxsarg); |
| 394 | for (i = 1; i <= maxsarg; i++) { |
| 395 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
| 396 | sv = NEWSV(0,0); |
| 397 | sv_setsv(sv,sarg[i]); |
| 398 | SSPUSHPTR(sv); /* remember the value */ |
| 399 | SSPUSHINT(SAVEt_ITEM); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | void |
| a0d0e21e |
404 | save_destructor(f,p) |
| 405 | void (*f) _((void*)); |
| 406 | void* p; |
| 407 | { |
| 408 | SSCHECK(3); |
| 409 | SSPUSHDPTR(f); |
| 410 | SSPUSHPTR(p); |
| 411 | SSPUSHINT(SAVEt_DESTRUCTOR); |
| 412 | } |
| 413 | |
| 414 | void |
| 79072805 |
415 | leave_scope(base) |
| 416 | I32 base; |
| 417 | { |
| 418 | register SV *sv; |
| 419 | register SV *value; |
| 420 | register GV *gv; |
| 421 | register AV *av; |
| 422 | register HV *hv; |
| 423 | register void* ptr; |
| 424 | |
| 425 | if (base < -1) |
| 463ee0b2 |
426 | croak("panic: corrupt saved stack index"); |
| 79072805 |
427 | while (savestack_ix > base) { |
| 428 | switch (SSPOPINT) { |
| 429 | case SAVEt_ITEM: /* normal string */ |
| 430 | value = (SV*)SSPOPPTR; |
| 431 | sv = (SV*)SSPOPPTR; |
| 432 | sv_replace(sv,value); |
| 748a9306 |
433 | localizing = 2; |
| 79072805 |
434 | SvSETMAGIC(sv); |
| 748a9306 |
435 | localizing = 0; |
| 79072805 |
436 | break; |
| 437 | case SAVEt_SV: /* scalar reference */ |
| 438 | value = (SV*)SSPOPPTR; |
| 439 | gv = (GV*)SSPOPPTR; |
| 440 | sv = GvSV(gv); |
| 748a9306 |
441 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
| 442 | SvTYPE(sv) != SVt_PVGV) |
| 443 | { |
| a0d0e21e |
444 | (void)SvUPGRADE(value, SvTYPE(sv)); |
| 85e6fe83 |
445 | SvMAGIC(value) = SvMAGIC(sv); |
| a0d0e21e |
446 | SvFLAGS(value) |= SvMAGICAL(sv); |
| 447 | SvMAGICAL_off(sv); |
| 79072805 |
448 | SvMAGIC(sv) = 0; |
| 85e6fe83 |
449 | } |
| 8990e307 |
450 | SvREFCNT_dec(sv); |
| a0d0e21e |
451 | GvSV(gv) = value; |
| 748a9306 |
452 | localizing = 2; |
| a0d0e21e |
453 | SvSETMAGIC(value); |
| 748a9306 |
454 | localizing = 0; |
| 79072805 |
455 | break; |
| 456 | case SAVEt_SVREF: /* scalar reference */ |
| 457 | ptr = SSPOPPTR; |
| 458 | sv = *(SV**)ptr; |
| a0d0e21e |
459 | value = (SV*)SSPOPPTR; |
| 748a9306 |
460 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
| 461 | SvTYPE(sv) != SVt_PVGV) |
| 462 | { |
| a0d0e21e |
463 | (void)SvUPGRADE(value, SvTYPE(sv)); |
| 464 | SvMAGIC(value) = SvMAGIC(sv); |
| 465 | SvFLAGS(value) |= SvMAGICAL(sv); |
| 466 | SvMAGICAL_off(sv); |
| 79072805 |
467 | SvMAGIC(sv) = 0; |
| a0d0e21e |
468 | } |
| 8990e307 |
469 | SvREFCNT_dec(sv); |
| a0d0e21e |
470 | *(SV**)ptr = value; |
| 748a9306 |
471 | localizing = 2; |
| a0d0e21e |
472 | SvSETMAGIC(value); |
| 748a9306 |
473 | localizing = 0; |
| 79072805 |
474 | break; |
| 475 | case SAVEt_AV: /* array reference */ |
| 476 | av = (AV*)SSPOPPTR; |
| 477 | gv = (GV*)SSPOPPTR; |
| 8990e307 |
478 | SvREFCNT_dec(GvAV(gv)); |
| 79072805 |
479 | GvAV(gv) = av; |
| 480 | break; |
| 481 | case SAVEt_HV: /* hash reference */ |
| 482 | hv = (HV*)SSPOPPTR; |
| 483 | gv = (GV*)SSPOPPTR; |
| 8990e307 |
484 | SvREFCNT_dec(GvHV(gv)); |
| 79072805 |
485 | GvHV(gv) = hv; |
| 486 | break; |
| 487 | case SAVEt_INT: /* int reference */ |
| 488 | ptr = SSPOPPTR; |
| 489 | *(int*)ptr = (int)SSPOPINT; |
| 490 | break; |
| 85e6fe83 |
491 | case SAVEt_LONG: /* long reference */ |
| 492 | ptr = SSPOPPTR; |
| 493 | *(long*)ptr = (long)SSPOPLONG; |
| 494 | break; |
| 79072805 |
495 | case SAVEt_I32: /* I32 reference */ |
| 496 | ptr = SSPOPPTR; |
| 497 | *(I32*)ptr = (I32)SSPOPINT; |
| 498 | break; |
| a0d0e21e |
499 | case SAVEt_IV: /* IV reference */ |
| 500 | ptr = SSPOPPTR; |
| 501 | *(IV*)ptr = (IV)SSPOPIV; |
| 502 | break; |
| 79072805 |
503 | case SAVEt_SPTR: /* SV* reference */ |
| 504 | ptr = SSPOPPTR; |
| 505 | *(SV**)ptr = (SV*)SSPOPPTR; |
| 506 | break; |
| 85e6fe83 |
507 | case SAVEt_PPTR: /* char* reference */ |
| 508 | ptr = SSPOPPTR; |
| 509 | *(char**)ptr = (char*)SSPOPPTR; |
| 510 | break; |
| 79072805 |
511 | case SAVEt_HPTR: /* HV* reference */ |
| 512 | ptr = SSPOPPTR; |
| 513 | *(HV**)ptr = (HV*)SSPOPPTR; |
| 514 | break; |
| 515 | case SAVEt_APTR: /* AV* reference */ |
| 516 | ptr = SSPOPPTR; |
| 517 | *(AV**)ptr = (AV*)SSPOPPTR; |
| 518 | break; |
| 519 | case SAVEt_NSTAB: |
| 520 | gv = (GV*)SSPOPPTR; |
| 521 | (void)sv_clear(gv); |
| 522 | break; |
| 523 | case SAVEt_GP: /* scalar reference */ |
| 524 | ptr = SSPOPPTR; |
| 525 | gv = (GV*)SSPOPPTR; |
| 526 | gp_free(gv); |
| 527 | GvGP(gv) = (GP*)ptr; |
| 4633a7c4 |
528 | SvREFCNT_dec(gv); |
| 79072805 |
529 | break; |
| 8990e307 |
530 | case SAVEt_FREESV: |
| 531 | ptr = SSPOPPTR; |
| 532 | SvREFCNT_dec((SV*)ptr); |
| 533 | break; |
| 534 | case SAVEt_FREEOP: |
| 535 | ptr = SSPOPPTR; |
| 536 | curpad = AvARRAY(comppad); |
| 537 | op_free((OP*)ptr); |
| 538 | break; |
| 539 | case SAVEt_FREEPV: |
| 540 | ptr = SSPOPPTR; |
| 541 | Safefree((char*)ptr); |
| 542 | break; |
| 543 | case SAVEt_CLEARSV: |
| 4aa0a1f7 |
544 | ptr = (void*)&curpad[SSPOPLONG]; |
| 8990e307 |
545 | sv = *(SV**)ptr; |
| a0d0e21e |
546 | if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */ |
| 8990e307 |
547 | if (SvTHINKFIRST(sv)) { |
| 548 | if (SvREADONLY(sv)) |
| 549 | croak("panic: leave_scope clearsv"); |
| 550 | if (SvROK(sv)) |
| 551 | sv_unref(sv); |
| 552 | } |
| a0d0e21e |
553 | if (SvMAGICAL(sv)) |
| 554 | mg_free(sv); |
| 8990e307 |
555 | |
| 556 | switch (SvTYPE(sv)) { |
| 557 | case SVt_NULL: |
| 558 | break; |
| 559 | case SVt_PVAV: |
| 560 | av_clear((AV*)sv); |
| 561 | break; |
| 562 | case SVt_PVHV: |
| 563 | hv_clear((HV*)sv); |
| 564 | break; |
| 565 | case SVt_PVCV: |
| 566 | sub_generation++; |
| 85e6fe83 |
567 | cv_undef((CV*)sv); |
| 8990e307 |
568 | break; |
| 569 | default: |
| 570 | if (SvPOK(sv) && SvLEN(sv)) |
| a0d0e21e |
571 | (void)SvOOK_off(sv); |
| 572 | (void)SvOK_off(sv); |
| 8990e307 |
573 | break; |
| 574 | } |
| 575 | } |
| 576 | else { /* Someone has a claim on this, so abandon it. */ |
| 4aa0a1f7 |
577 | U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); |
| 8990e307 |
578 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
| 579 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
| 580 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
| 581 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
| 582 | default: *(SV**)ptr = NEWSV(0,0); break; |
| 583 | } |
| 4aa0a1f7 |
584 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
| 8990e307 |
585 | } |
| 586 | break; |
| 587 | case SAVEt_DELETE: |
| 588 | ptr = SSPOPPTR; |
| 589 | hv = (HV*)ptr; |
| 590 | ptr = SSPOPPTR; |
| 748a9306 |
591 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
| adbc6bb1 |
592 | Safefree(ptr); |
| 8990e307 |
593 | break; |
| a0d0e21e |
594 | case SAVEt_DESTRUCTOR: |
| 595 | ptr = SSPOPPTR; |
| 596 | (*SSPOPDPTR)(ptr); |
| 597 | break; |
| 598 | case SAVEt_REGCONTEXT: |
| 8e07c86e |
599 | { |
| 600 | I32 delta = SSPOPINT; |
| 601 | savestack_ix -= delta; /* regexp must have croaked */ |
| 602 | } |
| a0d0e21e |
603 | break; |
| 79072805 |
604 | default: |
| 463ee0b2 |
605 | croak("panic: leave_scope inconsistency"); |
| 79072805 |
606 | } |
| 607 | } |
| 608 | } |
| 8990e307 |
609 | |
| 610 | #ifdef DEBUGGING |
| 611 | void |
| 612 | cx_dump(cx) |
| 613 | CONTEXT* cx; |
| 614 | { |
| 615 | fprintf(stderr, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]); |
| 616 | if (cx->cx_type != CXt_SUBST) { |
| 617 | fprintf(stderr, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
| 618 | fprintf(stderr, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop); |
| 619 | fprintf(stderr, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
| 620 | fprintf(stderr, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
| 621 | fprintf(stderr, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); |
| 622 | fprintf(stderr, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm); |
| 623 | fprintf(stderr, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
| 624 | } |
| 625 | switch (cx->cx_type) { |
| 626 | case CXt_NULL: |
| 627 | case CXt_BLOCK: |
| 628 | break; |
| 629 | case CXt_SUB: |
| 630 | fprintf(stderr, "BLK_SUB.CV = 0x%lx\n", |
| 631 | (long)cx->blk_sub.cv); |
| 632 | fprintf(stderr, "BLK_SUB.GV = 0x%lx\n", |
| 633 | (long)cx->blk_sub.gv); |
| 634 | fprintf(stderr, "BLK_SUB.DFOUTGV = 0x%lx\n", |
| 635 | (long)cx->blk_sub.dfoutgv); |
| 636 | fprintf(stderr, "BLK_SUB.OLDDEPTH = %ld\n", |
| 637 | (long)cx->blk_sub.olddepth); |
| 638 | fprintf(stderr, "BLK_SUB.HASARGS = %d\n", |
| 639 | (int)cx->blk_sub.hasargs); |
| 640 | break; |
| 641 | case CXt_EVAL: |
| 642 | fprintf(stderr, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
| 643 | (long)cx->blk_eval.old_in_eval); |
| 644 | fprintf(stderr, "BLK_EVAL.OLD_OP_TYPE = %s\n", |
| 645 | op_name[cx->blk_eval.old_op_type]); |
| 646 | fprintf(stderr, "BLK_EVAL.OLD_NAME = %s\n", |
| 647 | cx->blk_eval.old_name); |
| 648 | fprintf(stderr, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n", |
| 649 | (long)cx->blk_eval.old_eval_root); |
| 650 | break; |
| 651 | |
| 652 | case CXt_LOOP: |
| 653 | fprintf(stderr, "BLK_LOOP.LABEL = %s\n", |
| 654 | cx->blk_loop.label); |
| 655 | fprintf(stderr, "BLK_LOOP.RESETSP = %ld\n", |
| 656 | (long)cx->blk_loop.resetsp); |
| 657 | fprintf(stderr, "BLK_LOOP.REDO_OP = 0x%lx\n", |
| 658 | (long)cx->blk_loop.redo_op); |
| 659 | fprintf(stderr, "BLK_LOOP.NEXT_OP = 0x%lx\n", |
| 660 | (long)cx->blk_loop.next_op); |
| 661 | fprintf(stderr, "BLK_LOOP.LAST_OP = 0x%lx\n", |
| 662 | (long)cx->blk_loop.last_op); |
| 663 | fprintf(stderr, "BLK_LOOP.ITERIX = %ld\n", |
| 664 | (long)cx->blk_loop.iterix); |
| 665 | fprintf(stderr, "BLK_LOOP.ITERARY = 0x%lx\n", |
| 666 | (long)cx->blk_loop.iterary); |
| 667 | fprintf(stderr, "BLK_LOOP.ITERVAR = 0x%lx\n", |
| 668 | (long)cx->blk_loop.itervar); |
| 669 | if (cx->blk_loop.itervar) |
| 670 | fprintf(stderr, "BLK_LOOP.ITERSAVE = 0x%lx\n", |
| 671 | (long)cx->blk_loop.itersave); |
| 672 | break; |
| 673 | |
| 674 | case CXt_SUBST: |
| 675 | fprintf(stderr, "SB_ITERS = %ld\n", |
| 676 | (long)cx->sb_iters); |
| 677 | fprintf(stderr, "SB_MAXITERS = %ld\n", |
| 678 | (long)cx->sb_maxiters); |
| 679 | fprintf(stderr, "SB_SAFEBASE = %ld\n", |
| 680 | (long)cx->sb_safebase); |
| 681 | fprintf(stderr, "SB_ONCE = %ld\n", |
| 682 | (long)cx->sb_once); |
| 683 | fprintf(stderr, "SB_ORIG = %s\n", |
| 684 | cx->sb_orig); |
| 685 | fprintf(stderr, "SB_DSTR = 0x%lx\n", |
| 686 | (long)cx->sb_dstr); |
| 687 | fprintf(stderr, "SB_TARG = 0x%lx\n", |
| 688 | (long)cx->sb_targ); |
| 689 | fprintf(stderr, "SB_S = 0x%lx\n", |
| 690 | (long)cx->sb_s); |
| 691 | fprintf(stderr, "SB_M = 0x%lx\n", |
| 692 | (long)cx->sb_m); |
| 693 | fprintf(stderr, "SB_STREND = 0x%lx\n", |
| 694 | (long)cx->sb_strend); |
| 695 | fprintf(stderr, "SB_SUBBASE = 0x%lx\n", |
| 696 | (long)cx->sb_subbase); |
| 697 | break; |
| 698 | } |
| 699 | } |
| 700 | #endif |
projects / p5sagit/p5-mst-13.2.git / blame