Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* scope.c |
79072805 | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 LW |
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 LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "For the fashion of Minas Tirith was such that it was built on seven | |
12 | * levels..." | |
79072805 LW |
13 | */ |
14 | ||
15 | #include "EXTERN.h" | |
16 | #include "perl.h" | |
17 | ||
a0d0e21e LW |
18 | SV** |
19 | stack_grow(sp, p, n) | |
20 | SV** sp; | |
21 | SV** p; | |
22 | int n; | |
23 | { | |
24 | stack_sp = sp; | |
1f96a9ed | 25 | av_extend(curstack, (p - stack_base) + (n) + 128); |
a0d0e21e LW |
26 | return stack_sp; |
27 | } | |
28 | ||
79072805 LW |
29 | I32 |
30 | cxinc() | |
31 | { | |
32 | cxstack_max = cxstack_max * 3 / 2; | |
a38d6535 | 33 | Renew(cxstack, cxstack_max + 1, CONTEXT); /* XXX should fix CXINC macro */ |
79072805 LW |
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 LW |
73 | } |
74 | ||
75 | void | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
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 LW |
126 | MAGIC* mg; |
127 | bool oldtainted = tainted; | |
a0d0e21e | 128 | mg_get(osv); |
748a9306 LW |
129 | if (tainting && tainted && (mg = mg_find(osv, 't'))) { |
130 | SAVESPTR(mg->mg_obj); | |
131 | mg->mg_obj = osv; | |
132 | } | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
184 | MAGIC* mg; |
185 | bool oldtainted = tainted; | |
a0d0e21e | 186 | mg_get(osv); |
748a9306 LW |
187 | if (tainting && tainted && (mg = mg_find(osv, 't'))) { |
188 | SAVESPTR(mg->mg_obj); | |
189 | mg->mg_obj = osv; | |
190 | } | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
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 |
55497cff PP |
275 | save_I16(intp) |
276 | I16 *intp; | |
277 | { | |
278 | SSCHECK(3); | |
279 | SSPUSHINT(*intp); | |
280 | SSPUSHPTR(intp); | |
281 | SSPUSHINT(SAVEt_I16); | |
282 | } | |
283 | ||
284 | void | |
a0d0e21e LW |
285 | save_iv(ivp) |
286 | IV *ivp; | |
287 | { | |
288 | SSCHECK(3); | |
4aa0a1f7 | 289 | SSPUSHIV(*ivp); |
a0d0e21e LW |
290 | SSPUSHPTR(ivp); |
291 | SSPUSHINT(SAVEt_IV); | |
292 | } | |
293 | ||
85e6fe83 LW |
294 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
295 | * force word-alignment and we'll miss the pointer. | |
296 | */ | |
297 | void | |
298 | save_pptr(pptr) | |
299 | char **pptr; | |
300 | { | |
301 | SSCHECK(3); | |
302 | SSPUSHPTR(*pptr); | |
303 | SSPUSHPTR(pptr); | |
304 | SSPUSHINT(SAVEt_PPTR); | |
305 | } | |
306 | ||
79072805 LW |
307 | void |
308 | save_sptr(sptr) | |
309 | SV **sptr; | |
310 | { | |
311 | SSCHECK(3); | |
312 | SSPUSHPTR(*sptr); | |
313 | SSPUSHPTR(sptr); | |
314 | SSPUSHINT(SAVEt_SPTR); | |
315 | } | |
316 | ||
317 | void | |
318 | save_nogv(gv) | |
319 | GV *gv; | |
320 | { | |
321 | SSCHECK(2); | |
322 | SSPUSHPTR(gv); | |
323 | SSPUSHINT(SAVEt_NSTAB); | |
324 | } | |
325 | ||
326 | void | |
327 | save_hptr(hptr) | |
328 | HV **hptr; | |
329 | { | |
330 | SSCHECK(3); | |
85e6fe83 | 331 | SSPUSHPTR(*hptr); |
79072805 LW |
332 | SSPUSHPTR(hptr); |
333 | SSPUSHINT(SAVEt_HPTR); | |
334 | } | |
335 | ||
336 | void | |
337 | save_aptr(aptr) | |
338 | AV **aptr; | |
339 | { | |
340 | SSCHECK(3); | |
85e6fe83 | 341 | SSPUSHPTR(*aptr); |
79072805 LW |
342 | SSPUSHPTR(aptr); |
343 | SSPUSHINT(SAVEt_APTR); | |
344 | } | |
345 | ||
346 | void | |
8990e307 LW |
347 | save_freesv(sv) |
348 | SV *sv; | |
349 | { | |
350 | SSCHECK(2); | |
351 | SSPUSHPTR(sv); | |
352 | SSPUSHINT(SAVEt_FREESV); | |
353 | } | |
354 | ||
355 | void | |
356 | save_freeop(op) | |
357 | OP *op; | |
358 | { | |
359 | SSCHECK(2); | |
360 | SSPUSHPTR(op); | |
361 | SSPUSHINT(SAVEt_FREEOP); | |
362 | } | |
363 | ||
364 | void | |
365 | save_freepv(pv) | |
366 | char *pv; | |
367 | { | |
368 | SSCHECK(2); | |
369 | SSPUSHPTR(pv); | |
370 | SSPUSHINT(SAVEt_FREEPV); | |
371 | } | |
372 | ||
373 | void | |
374 | save_clearsv(svp) | |
375 | SV** svp; | |
376 | { | |
377 | SSCHECK(2); | |
4aa0a1f7 | 378 | SSPUSHLONG((long)(svp-curpad)); |
8990e307 LW |
379 | SSPUSHINT(SAVEt_CLEARSV); |
380 | } | |
381 | ||
382 | void | |
383 | save_delete(hv,key,klen) | |
384 | HV *hv; | |
385 | char *key; | |
386 | I32 klen; | |
387 | { | |
388 | SSCHECK(4); | |
389 | SSPUSHINT(klen); | |
390 | SSPUSHPTR(key); | |
391 | SSPUSHPTR(hv); | |
392 | SSPUSHINT(SAVEt_DELETE); | |
393 | } | |
394 | ||
395 | void | |
79072805 LW |
396 | save_list(sarg,maxsarg) |
397 | register SV **sarg; | |
398 | I32 maxsarg; | |
399 | { | |
400 | register SV *sv; | |
401 | register I32 i; | |
402 | ||
403 | SSCHECK(3 * maxsarg); | |
404 | for (i = 1; i <= maxsarg; i++) { | |
405 | SSPUSHPTR(sarg[i]); /* remember the pointer */ | |
406 | sv = NEWSV(0,0); | |
407 | sv_setsv(sv,sarg[i]); | |
408 | SSPUSHPTR(sv); /* remember the value */ | |
409 | SSPUSHINT(SAVEt_ITEM); | |
410 | } | |
411 | } | |
412 | ||
413 | void | |
a0d0e21e LW |
414 | save_destructor(f,p) |
415 | void (*f) _((void*)); | |
416 | void* p; | |
417 | { | |
418 | SSCHECK(3); | |
419 | SSPUSHDPTR(f); | |
420 | SSPUSHPTR(p); | |
421 | SSPUSHINT(SAVEt_DESTRUCTOR); | |
422 | } | |
423 | ||
424 | void | |
79072805 LW |
425 | leave_scope(base) |
426 | I32 base; | |
427 | { | |
428 | register SV *sv; | |
429 | register SV *value; | |
430 | register GV *gv; | |
431 | register AV *av; | |
432 | register HV *hv; | |
433 | register void* ptr; | |
434 | ||
435 | if (base < -1) | |
463ee0b2 | 436 | croak("panic: corrupt saved stack index"); |
79072805 LW |
437 | while (savestack_ix > base) { |
438 | switch (SSPOPINT) { | |
439 | case SAVEt_ITEM: /* normal string */ | |
440 | value = (SV*)SSPOPPTR; | |
441 | sv = (SV*)SSPOPPTR; | |
442 | sv_replace(sv,value); | |
748a9306 | 443 | localizing = 2; |
79072805 | 444 | SvSETMAGIC(sv); |
748a9306 | 445 | localizing = 0; |
79072805 LW |
446 | break; |
447 | case SAVEt_SV: /* scalar reference */ | |
448 | value = (SV*)SSPOPPTR; | |
449 | gv = (GV*)SSPOPPTR; | |
450 | sv = GvSV(gv); | |
748a9306 LW |
451 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
452 | SvTYPE(sv) != SVt_PVGV) | |
453 | { | |
a0d0e21e | 454 | (void)SvUPGRADE(value, SvTYPE(sv)); |
85e6fe83 | 455 | SvMAGIC(value) = SvMAGIC(sv); |
a0d0e21e LW |
456 | SvFLAGS(value) |= SvMAGICAL(sv); |
457 | SvMAGICAL_off(sv); | |
79072805 | 458 | SvMAGIC(sv) = 0; |
85e6fe83 | 459 | } |
8990e307 | 460 | SvREFCNT_dec(sv); |
a0d0e21e | 461 | GvSV(gv) = value; |
748a9306 | 462 | localizing = 2; |
a0d0e21e | 463 | SvSETMAGIC(value); |
748a9306 | 464 | localizing = 0; |
79072805 LW |
465 | break; |
466 | case SAVEt_SVREF: /* scalar reference */ | |
467 | ptr = SSPOPPTR; | |
468 | sv = *(SV**)ptr; | |
a0d0e21e | 469 | value = (SV*)SSPOPPTR; |
748a9306 LW |
470 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
471 | SvTYPE(sv) != SVt_PVGV) | |
472 | { | |
a0d0e21e LW |
473 | (void)SvUPGRADE(value, SvTYPE(sv)); |
474 | SvMAGIC(value) = SvMAGIC(sv); | |
475 | SvFLAGS(value) |= SvMAGICAL(sv); | |
476 | SvMAGICAL_off(sv); | |
79072805 | 477 | SvMAGIC(sv) = 0; |
a0d0e21e | 478 | } |
8990e307 | 479 | SvREFCNT_dec(sv); |
a0d0e21e | 480 | *(SV**)ptr = value; |
748a9306 | 481 | localizing = 2; |
a0d0e21e | 482 | SvSETMAGIC(value); |
748a9306 | 483 | localizing = 0; |
79072805 LW |
484 | break; |
485 | case SAVEt_AV: /* array reference */ | |
486 | av = (AV*)SSPOPPTR; | |
487 | gv = (GV*)SSPOPPTR; | |
8990e307 | 488 | SvREFCNT_dec(GvAV(gv)); |
79072805 LW |
489 | GvAV(gv) = av; |
490 | break; | |
491 | case SAVEt_HV: /* hash reference */ | |
492 | hv = (HV*)SSPOPPTR; | |
493 | gv = (GV*)SSPOPPTR; | |
8990e307 | 494 | SvREFCNT_dec(GvHV(gv)); |
79072805 LW |
495 | GvHV(gv) = hv; |
496 | break; | |
497 | case SAVEt_INT: /* int reference */ | |
498 | ptr = SSPOPPTR; | |
499 | *(int*)ptr = (int)SSPOPINT; | |
500 | break; | |
85e6fe83 LW |
501 | case SAVEt_LONG: /* long reference */ |
502 | ptr = SSPOPPTR; | |
503 | *(long*)ptr = (long)SSPOPLONG; | |
504 | break; | |
79072805 LW |
505 | case SAVEt_I32: /* I32 reference */ |
506 | ptr = SSPOPPTR; | |
507 | *(I32*)ptr = (I32)SSPOPINT; | |
508 | break; | |
55497cff PP |
509 | case SAVEt_I16: /* I16 reference */ |
510 | ptr = SSPOPPTR; | |
511 | *(I16*)ptr = (I16)SSPOPINT; | |
512 | break; | |
a0d0e21e LW |
513 | case SAVEt_IV: /* IV reference */ |
514 | ptr = SSPOPPTR; | |
515 | *(IV*)ptr = (IV)SSPOPIV; | |
516 | break; | |
79072805 LW |
517 | case SAVEt_SPTR: /* SV* reference */ |
518 | ptr = SSPOPPTR; | |
519 | *(SV**)ptr = (SV*)SSPOPPTR; | |
520 | break; | |
85e6fe83 LW |
521 | case SAVEt_PPTR: /* char* reference */ |
522 | ptr = SSPOPPTR; | |
523 | *(char**)ptr = (char*)SSPOPPTR; | |
524 | break; | |
79072805 LW |
525 | case SAVEt_HPTR: /* HV* reference */ |
526 | ptr = SSPOPPTR; | |
527 | *(HV**)ptr = (HV*)SSPOPPTR; | |
528 | break; | |
529 | case SAVEt_APTR: /* AV* reference */ | |
530 | ptr = SSPOPPTR; | |
531 | *(AV**)ptr = (AV*)SSPOPPTR; | |
532 | break; | |
533 | case SAVEt_NSTAB: | |
534 | gv = (GV*)SSPOPPTR; | |
1f96a9ed | 535 | (void)sv_clear((SV*)gv); |
79072805 LW |
536 | break; |
537 | case SAVEt_GP: /* scalar reference */ | |
538 | ptr = SSPOPPTR; | |
539 | gv = (GV*)SSPOPPTR; | |
540 | gp_free(gv); | |
541 | GvGP(gv) = (GP*)ptr; | |
4633a7c4 | 542 | SvREFCNT_dec(gv); |
79072805 | 543 | break; |
8990e307 LW |
544 | case SAVEt_FREESV: |
545 | ptr = SSPOPPTR; | |
546 | SvREFCNT_dec((SV*)ptr); | |
547 | break; | |
548 | case SAVEt_FREEOP: | |
549 | ptr = SSPOPPTR; | |
550 | curpad = AvARRAY(comppad); | |
551 | op_free((OP*)ptr); | |
552 | break; | |
553 | case SAVEt_FREEPV: | |
554 | ptr = SSPOPPTR; | |
555 | Safefree((char*)ptr); | |
556 | break; | |
557 | case SAVEt_CLEARSV: | |
4aa0a1f7 | 558 | ptr = (void*)&curpad[SSPOPLONG]; |
8990e307 | 559 | sv = *(SV**)ptr; |
a0d0e21e | 560 | if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */ |
8990e307 LW |
561 | if (SvTHINKFIRST(sv)) { |
562 | if (SvREADONLY(sv)) | |
563 | croak("panic: leave_scope clearsv"); | |
564 | if (SvROK(sv)) | |
565 | sv_unref(sv); | |
566 | } | |
a0d0e21e LW |
567 | if (SvMAGICAL(sv)) |
568 | mg_free(sv); | |
8990e307 LW |
569 | |
570 | switch (SvTYPE(sv)) { | |
571 | case SVt_NULL: | |
572 | break; | |
573 | case SVt_PVAV: | |
574 | av_clear((AV*)sv); | |
575 | break; | |
576 | case SVt_PVHV: | |
577 | hv_clear((HV*)sv); | |
578 | break; | |
579 | case SVt_PVCV: | |
580 | sub_generation++; | |
85e6fe83 | 581 | cv_undef((CV*)sv); |
8990e307 LW |
582 | break; |
583 | default: | |
584 | if (SvPOK(sv) && SvLEN(sv)) | |
a0d0e21e LW |
585 | (void)SvOOK_off(sv); |
586 | (void)SvOK_off(sv); | |
8990e307 LW |
587 | break; |
588 | } | |
589 | } | |
590 | else { /* Someone has a claim on this, so abandon it. */ | |
4aa0a1f7 | 591 | U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); |
8990e307 LW |
592 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
593 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ | |
594 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; | |
595 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; | |
596 | default: *(SV**)ptr = NEWSV(0,0); break; | |
597 | } | |
4aa0a1f7 | 598 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
8990e307 LW |
599 | } |
600 | break; | |
601 | case SAVEt_DELETE: | |
602 | ptr = SSPOPPTR; | |
603 | hv = (HV*)ptr; | |
604 | ptr = SSPOPPTR; | |
748a9306 | 605 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
adbc6bb1 | 606 | Safefree(ptr); |
8990e307 | 607 | break; |
a0d0e21e LW |
608 | case SAVEt_DESTRUCTOR: |
609 | ptr = SSPOPPTR; | |
610 | (*SSPOPDPTR)(ptr); | |
611 | break; | |
612 | case SAVEt_REGCONTEXT: | |
8e07c86e AD |
613 | { |
614 | I32 delta = SSPOPINT; | |
615 | savestack_ix -= delta; /* regexp must have croaked */ | |
616 | } | |
a0d0e21e | 617 | break; |
55497cff PP |
618 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
619 | { | |
620 | I32 delta = SSPOPINT; | |
621 | stack_sp = stack_base + delta; | |
622 | } | |
623 | break; | |
79072805 | 624 | default: |
463ee0b2 | 625 | croak("panic: leave_scope inconsistency"); |
79072805 LW |
626 | } |
627 | } | |
628 | } | |
8990e307 LW |
629 | |
630 | #ifdef DEBUGGING | |
1f96a9ed | 631 | |
8990e307 LW |
632 | void |
633 | cx_dump(cx) | |
634 | CONTEXT* cx; | |
635 | { | |
760ac839 | 636 | PerlIO_printf(Perl_debug_log, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]); |
8990e307 | 637 | if (cx->cx_type != CXt_SUBST) { |
760ac839 LW |
638 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
639 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop); | |
640 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); | |
641 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
642 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); | |
643 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm); | |
644 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); | |
8990e307 LW |
645 | } |
646 | switch (cx->cx_type) { | |
647 | case CXt_NULL: | |
648 | case CXt_BLOCK: | |
649 | break; | |
650 | case CXt_SUB: | |
760ac839 | 651 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n", |
8990e307 | 652 | (long)cx->blk_sub.cv); |
760ac839 | 653 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n", |
8990e307 | 654 | (long)cx->blk_sub.gv); |
760ac839 | 655 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n", |
8990e307 | 656 | (long)cx->blk_sub.dfoutgv); |
760ac839 | 657 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 658 | (long)cx->blk_sub.olddepth); |
760ac839 | 659 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 LW |
660 | (int)cx->blk_sub.hasargs); |
661 | break; | |
662 | case CXt_EVAL: | |
760ac839 | 663 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 | 664 | (long)cx->blk_eval.old_in_eval); |
760ac839 | 665 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
c07a80fd PP |
666 | op_name[cx->blk_eval.old_op_type], |
667 | op_desc[cx->blk_eval.old_op_type]); | |
760ac839 | 668 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
8990e307 | 669 | cx->blk_eval.old_name); |
760ac839 | 670 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n", |
8990e307 LW |
671 | (long)cx->blk_eval.old_eval_root); |
672 | break; | |
673 | ||
674 | case CXt_LOOP: | |
760ac839 | 675 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 | 676 | cx->blk_loop.label); |
760ac839 | 677 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 | 678 | (long)cx->blk_loop.resetsp); |
760ac839 | 679 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n", |
8990e307 | 680 | (long)cx->blk_loop.redo_op); |
760ac839 | 681 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n", |
8990e307 | 682 | (long)cx->blk_loop.next_op); |
760ac839 | 683 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n", |
8990e307 | 684 | (long)cx->blk_loop.last_op); |
760ac839 | 685 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 | 686 | (long)cx->blk_loop.iterix); |
760ac839 | 687 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n", |
8990e307 | 688 | (long)cx->blk_loop.iterary); |
760ac839 | 689 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n", |
8990e307 LW |
690 | (long)cx->blk_loop.itervar); |
691 | if (cx->blk_loop.itervar) | |
760ac839 | 692 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n", |
8990e307 LW |
693 | (long)cx->blk_loop.itersave); |
694 | break; | |
695 | ||
696 | case CXt_SUBST: | |
760ac839 | 697 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 698 | (long)cx->sb_iters); |
760ac839 | 699 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 700 | (long)cx->sb_maxiters); |
760ac839 | 701 | PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n", |
8990e307 | 702 | (long)cx->sb_safebase); |
760ac839 | 703 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 | 704 | (long)cx->sb_once); |
760ac839 | 705 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 706 | cx->sb_orig); |
760ac839 | 707 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n", |
8990e307 | 708 | (long)cx->sb_dstr); |
760ac839 | 709 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n", |
8990e307 | 710 | (long)cx->sb_targ); |
760ac839 | 711 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n", |
8990e307 | 712 | (long)cx->sb_s); |
760ac839 | 713 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n", |
8990e307 | 714 | (long)cx->sb_m); |
760ac839 | 715 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n", |
8990e307 | 716 | (long)cx->sb_strend); |
760ac839 | 717 | PerlIO_printf(Perl_debug_log, "SB_SUBBASE = 0x%lx\n", |
8990e307 LW |
718 | (long)cx->sb_subbase); |
719 | break; | |
720 | } | |
721 | } | |
722 | #endif |