Commit | Line | Data |
a0d0e21e |
1 | /* scope.c |
79072805 |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, 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** |
8ac85365 |
19 | stack_grow(SV **sp, SV **p, int n) |
a0d0e21e |
20 | { |
11343788 |
21 | dTHR; |
a60c0954 |
22 | #if defined(DEBUGGING) && !defined(USE_THREADS) |
23 | static int growing = 0; |
24 | if (growing++) |
25 | abort(); |
26 | #endif |
a0d0e21e |
27 | stack_sp = sp; |
2ce36478 |
28 | #ifndef STRESS_REALLOC |
1f96a9ed |
29 | av_extend(curstack, (p - stack_base) + (n) + 128); |
2ce36478 |
30 | #else |
31 | av_extend(curstack, (p - stack_base) + (n) + 1); |
32 | #endif |
a60c0954 |
33 | #if defined(DEBUGGING) && !defined(USE_THREADS) |
34 | growing--; |
35 | #endif |
a0d0e21e |
36 | return stack_sp; |
37 | } |
38 | |
2ce36478 |
39 | #ifndef STRESS_REALLOC |
40 | #define GROW(old) ((old) * 3 / 2) |
41 | #else |
42 | #define GROW(old) ((old) + 1) |
43 | #endif |
44 | |
e336de0d |
45 | PERL_SI * |
46 | new_stackinfo(I32 stitems, I32 cxitems) |
47 | { |
48 | PERL_SI *si; |
49 | PERL_CONTEXT *cxt; |
50 | New(56, si, 1, PERL_SI); |
51 | si->si_stack = newAV(); |
52 | AvREAL_off(si->si_stack); |
53 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); |
54 | AvALLOC(si->si_stack)[0] = &sv_undef; |
55 | AvFILLp(si->si_stack) = 0; |
56 | si->si_prev = 0; |
57 | si->si_next = 0; |
58 | si->si_cxmax = cxitems - 1; |
59 | si->si_cxix = -1; |
60 | si->si_type = SI_UNDEF; |
61 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
62 | return si; |
63 | } |
64 | |
79072805 |
65 | I32 |
8ac85365 |
66 | cxinc(void) |
79072805 |
67 | { |
11343788 |
68 | dTHR; |
2ce36478 |
69 | cxstack_max = GROW(cxstack_max); |
c09156bb |
70 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
79072805 |
71 | return cxstack_ix + 1; |
72 | } |
73 | |
74 | void |
8ac85365 |
75 | push_return(OP *retop) |
79072805 |
76 | { |
11343788 |
77 | dTHR; |
79072805 |
78 | if (retstack_ix == retstack_max) { |
2ce36478 |
79 | retstack_max = GROW(retstack_max); |
79072805 |
80 | Renew(retstack, retstack_max, OP*); |
81 | } |
82 | retstack[retstack_ix++] = retop; |
83 | } |
84 | |
85 | OP * |
8ac85365 |
86 | pop_return(void) |
79072805 |
87 | { |
11343788 |
88 | dTHR; |
79072805 |
89 | if (retstack_ix > 0) |
90 | return retstack[--retstack_ix]; |
91 | else |
92 | return Nullop; |
93 | } |
94 | |
95 | void |
8ac85365 |
96 | push_scope(void) |
79072805 |
97 | { |
11343788 |
98 | dTHR; |
79072805 |
99 | if (scopestack_ix == scopestack_max) { |
2ce36478 |
100 | scopestack_max = GROW(scopestack_max); |
79072805 |
101 | Renew(scopestack, scopestack_max, I32); |
102 | } |
103 | scopestack[scopestack_ix++] = savestack_ix; |
104 | |
105 | } |
106 | |
107 | void |
8ac85365 |
108 | pop_scope(void) |
79072805 |
109 | { |
11343788 |
110 | dTHR; |
79072805 |
111 | I32 oldsave = scopestack[--scopestack_ix]; |
8990e307 |
112 | LEAVE_SCOPE(oldsave); |
79072805 |
113 | } |
114 | |
115 | void |
8ac85365 |
116 | markstack_grow(void) |
a0d0e21e |
117 | { |
11343788 |
118 | dTHR; |
a0d0e21e |
119 | I32 oldmax = markstack_max - markstack; |
2ce36478 |
120 | I32 newmax = GROW(oldmax); |
a0d0e21e |
121 | |
122 | Renew(markstack, newmax, I32); |
123 | markstack_ptr = markstack + oldmax; |
124 | markstack_max = markstack + newmax; |
125 | } |
126 | |
127 | void |
8ac85365 |
128 | savestack_grow(void) |
79072805 |
129 | { |
11343788 |
130 | dTHR; |
2ce36478 |
131 | savestack_max = GROW(savestack_max) + 4; |
79072805 |
132 | Renew(savestack, savestack_max, ANY); |
133 | } |
134 | |
2ce36478 |
135 | #undef GROW |
136 | |
79072805 |
137 | void |
8ac85365 |
138 | free_tmps(void) |
79072805 |
139 | { |
11343788 |
140 | dTHR; |
79072805 |
141 | /* XXX should tmps_floor live in cxstack? */ |
142 | I32 myfloor = tmps_floor; |
143 | while (tmps_ix > myfloor) { /* clean up after last statement */ |
144 | SV* sv = tmps_stack[tmps_ix]; |
145 | tmps_stack[tmps_ix--] = Nullsv; |
463ee0b2 |
146 | if (sv) { |
147 | #ifdef DEBUGGING |
148 | SvTEMP_off(sv); |
149 | #endif |
8990e307 |
150 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 |
151 | } |
79072805 |
152 | } |
153 | } |
154 | |
7a4c00b4 |
155 | static SV * |
8ac85365 |
156 | save_scalar_at(SV **sptr) |
79072805 |
157 | { |
11343788 |
158 | dTHR; |
79072805 |
159 | register SV *sv; |
7a4c00b4 |
160 | SV *osv = *sptr; |
79072805 |
161 | |
7a4c00b4 |
162 | sv = *sptr = NEWSV(0,0); |
a0d0e21e |
163 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
79072805 |
164 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e |
165 | if (SvGMAGICAL(osv)) { |
748a9306 |
166 | MAGIC* mg; |
167 | bool oldtainted = tainted; |
a0d0e21e |
168 | mg_get(osv); |
748a9306 |
169 | if (tainting && tainted && (mg = mg_find(osv, 't'))) { |
170 | SAVESPTR(mg->mg_obj); |
171 | mg->mg_obj = osv; |
172 | } |
a0d0e21e |
173 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
174 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
748a9306 |
175 | tainted = oldtainted; |
a0d0e21e |
176 | } |
79072805 |
177 | SvMAGIC(sv) = SvMAGIC(osv); |
a0d0e21e |
178 | SvFLAGS(sv) |= SvMAGICAL(osv); |
748a9306 |
179 | localizing = 1; |
79072805 |
180 | SvSETMAGIC(sv); |
748a9306 |
181 | localizing = 0; |
79072805 |
182 | } |
183 | return sv; |
184 | } |
185 | |
7a4c00b4 |
186 | SV * |
8ac85365 |
187 | save_scalar(GV *gv) |
7a4c00b4 |
188 | { |
11343788 |
189 | dTHR; |
4e4c362e |
190 | SV **sptr = &GvSV(gv); |
7a4c00b4 |
191 | SSCHECK(3); |
4e4c362e |
192 | SSPUSHPTR(SvREFCNT_inc(gv)); |
193 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
194 | SSPUSHINT(SAVEt_SV); |
4e4c362e |
195 | return save_scalar_at(sptr); |
7a4c00b4 |
196 | } |
197 | |
198 | SV* |
8ac85365 |
199 | save_svref(SV **sptr) |
7a4c00b4 |
200 | { |
11343788 |
201 | dTHR; |
7a4c00b4 |
202 | SSCHECK(3); |
203 | SSPUSHPTR(sptr); |
4e4c362e |
204 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
205 | SSPUSHINT(SAVEt_SVREF); |
206 | return save_scalar_at(sptr); |
207 | } |
208 | |
79072805 |
209 | void |
8ac85365 |
210 | save_gp(GV *gv, I32 empty) |
79072805 |
211 | { |
e858de61 |
212 | dTHR; |
fb73857a |
213 | SSCHECK(6); |
214 | SSPUSHIV((IV)SvLEN(gv)); |
215 | SvLEN(gv) = 0; /* forget that anything was allocated here */ |
216 | SSPUSHIV((IV)SvCUR(gv)); |
217 | SSPUSHPTR(SvPVX(gv)); |
218 | SvPOK_off(gv); |
4633a7c4 |
219 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc |
220 | SSPUSHPTR(GvGP(gv)); |
79072805 |
221 | SSPUSHINT(SAVEt_GP); |
222 | |
5f05dabc |
223 | if (empty) { |
224 | register GP *gp; |
225 | Newz(602, gp, 1, GP); |
44a8e56a |
226 | GvGP(gv) = gp_ref(gp); |
5f05dabc |
227 | GvSV(gv) = NEWSV(72,0); |
228 | GvLINE(gv) = curcop->cop_line; |
229 | GvEGV(gv) = gv; |
230 | } |
231 | else { |
44a8e56a |
232 | gp_ref(GvGP(gv)); |
5f05dabc |
233 | GvINTRO_on(gv); |
234 | } |
79072805 |
235 | } |
79072805 |
236 | |
79072805 |
237 | AV * |
8ac85365 |
238 | save_ary(GV *gv) |
79072805 |
239 | { |
11343788 |
240 | dTHR; |
67a38de0 |
241 | AV *oav = GvAVn(gv); |
242 | AV *av; |
fb73857a |
243 | |
67a38de0 |
244 | if (!AvREAL(oav) && AvREIFY(oav)) |
245 | av_reify(oav); |
79072805 |
246 | SSCHECK(3); |
247 | SSPUSHPTR(gv); |
67a38de0 |
248 | SSPUSHPTR(oav); |
79072805 |
249 | SSPUSHINT(SAVEt_AV); |
250 | |
251 | GvAV(gv) = Null(AV*); |
fb73857a |
252 | av = GvAVn(gv); |
253 | if (SvMAGIC(oav)) { |
254 | SvMAGIC(av) = SvMAGIC(oav); |
255 | SvFLAGS(av) |= SvMAGICAL(oav); |
256 | SvMAGICAL_off(oav); |
257 | SvMAGIC(oav) = 0; |
258 | localizing = 1; |
259 | SvSETMAGIC((SV*)av); |
260 | localizing = 0; |
261 | } |
262 | return av; |
79072805 |
263 | } |
264 | |
265 | HV * |
8ac85365 |
266 | save_hash(GV *gv) |
79072805 |
267 | { |
11343788 |
268 | dTHR; |
fb73857a |
269 | HV *ohv, *hv; |
270 | |
79072805 |
271 | SSCHECK(3); |
272 | SSPUSHPTR(gv); |
fb73857a |
273 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
274 | SSPUSHINT(SAVEt_HV); |
275 | |
276 | GvHV(gv) = Null(HV*); |
fb73857a |
277 | hv = GvHVn(gv); |
278 | if (SvMAGIC(ohv)) { |
279 | SvMAGIC(hv) = SvMAGIC(ohv); |
280 | SvFLAGS(hv) |= SvMAGICAL(ohv); |
281 | SvMAGICAL_off(ohv); |
282 | SvMAGIC(ohv) = 0; |
283 | localizing = 1; |
284 | SvSETMAGIC((SV*)hv); |
285 | localizing = 0; |
286 | } |
287 | return hv; |
79072805 |
288 | } |
289 | |
290 | void |
8ac85365 |
291 | save_item(register SV *item) |
79072805 |
292 | { |
11343788 |
293 | dTHR; |
f46d017c |
294 | register SV *sv = NEWSV(0,0); |
79072805 |
295 | |
f46d017c |
296 | sv_setsv(sv,item); |
79072805 |
297 | SSCHECK(3); |
298 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
299 | SSPUSHPTR(sv); /* remember the value */ |
300 | SSPUSHINT(SAVEt_ITEM); |
301 | } |
302 | |
303 | void |
8ac85365 |
304 | save_int(int *intp) |
79072805 |
305 | { |
11343788 |
306 | dTHR; |
79072805 |
307 | SSCHECK(3); |
308 | SSPUSHINT(*intp); |
309 | SSPUSHPTR(intp); |
310 | SSPUSHINT(SAVEt_INT); |
311 | } |
312 | |
313 | void |
8ac85365 |
314 | save_long(long int *longp) |
85e6fe83 |
315 | { |
11343788 |
316 | dTHR; |
85e6fe83 |
317 | SSCHECK(3); |
318 | SSPUSHLONG(*longp); |
319 | SSPUSHPTR(longp); |
320 | SSPUSHINT(SAVEt_LONG); |
321 | } |
322 | |
323 | void |
8ac85365 |
324 | save_I32(I32 *intp) |
79072805 |
325 | { |
11343788 |
326 | dTHR; |
79072805 |
327 | SSCHECK(3); |
328 | SSPUSHINT(*intp); |
329 | SSPUSHPTR(intp); |
330 | SSPUSHINT(SAVEt_I32); |
331 | } |
332 | |
a0d0e21e |
333 | void |
8ac85365 |
334 | save_I16(I16 *intp) |
55497cff |
335 | { |
e858de61 |
336 | dTHR; |
55497cff |
337 | SSCHECK(3); |
338 | SSPUSHINT(*intp); |
339 | SSPUSHPTR(intp); |
340 | SSPUSHINT(SAVEt_I16); |
341 | } |
342 | |
343 | void |
8ac85365 |
344 | save_iv(IV *ivp) |
a0d0e21e |
345 | { |
11343788 |
346 | dTHR; |
a0d0e21e |
347 | SSCHECK(3); |
4aa0a1f7 |
348 | SSPUSHIV(*ivp); |
a0d0e21e |
349 | SSPUSHPTR(ivp); |
350 | SSPUSHINT(SAVEt_IV); |
351 | } |
352 | |
85e6fe83 |
353 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
354 | * force word-alignment and we'll miss the pointer. |
355 | */ |
356 | void |
8ac85365 |
357 | save_pptr(char **pptr) |
85e6fe83 |
358 | { |
11343788 |
359 | dTHR; |
85e6fe83 |
360 | SSCHECK(3); |
361 | SSPUSHPTR(*pptr); |
362 | SSPUSHPTR(pptr); |
363 | SSPUSHINT(SAVEt_PPTR); |
364 | } |
365 | |
79072805 |
366 | void |
8ac85365 |
367 | save_sptr(SV **sptr) |
79072805 |
368 | { |
11343788 |
369 | dTHR; |
79072805 |
370 | SSCHECK(3); |
371 | SSPUSHPTR(*sptr); |
372 | SSPUSHPTR(sptr); |
373 | SSPUSHINT(SAVEt_SPTR); |
374 | } |
375 | |
54b9620d |
376 | SV ** |
377 | save_threadsv(PADOFFSET i) |
378 | { |
379 | #ifdef USE_THREADS |
380 | dTHR; |
940cb80d |
381 | SV **svp = &THREADSV(i); /* XXX Change to save by offset */ |
54b9620d |
382 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "save_threadsv %u: %p %p:%s\n", |
383 | i, svp, *svp, SvPEEK(*svp))); |
384 | save_svref(svp); |
385 | return svp; |
386 | #else |
387 | croak("panic: save_threadsv called in non-threaded perl"); |
388 | return 0; |
389 | #endif /* USE_THREADS */ |
390 | } |
391 | |
79072805 |
392 | void |
8ac85365 |
393 | save_nogv(GV *gv) |
79072805 |
394 | { |
11343788 |
395 | dTHR; |
79072805 |
396 | SSCHECK(2); |
397 | SSPUSHPTR(gv); |
398 | SSPUSHINT(SAVEt_NSTAB); |
399 | } |
400 | |
401 | void |
8ac85365 |
402 | save_hptr(HV **hptr) |
79072805 |
403 | { |
11343788 |
404 | dTHR; |
79072805 |
405 | SSCHECK(3); |
85e6fe83 |
406 | SSPUSHPTR(*hptr); |
79072805 |
407 | SSPUSHPTR(hptr); |
408 | SSPUSHINT(SAVEt_HPTR); |
409 | } |
410 | |
411 | void |
8ac85365 |
412 | save_aptr(AV **aptr) |
79072805 |
413 | { |
11343788 |
414 | dTHR; |
79072805 |
415 | SSCHECK(3); |
85e6fe83 |
416 | SSPUSHPTR(*aptr); |
79072805 |
417 | SSPUSHPTR(aptr); |
418 | SSPUSHINT(SAVEt_APTR); |
419 | } |
420 | |
421 | void |
8ac85365 |
422 | save_freesv(SV *sv) |
8990e307 |
423 | { |
11343788 |
424 | dTHR; |
8990e307 |
425 | SSCHECK(2); |
426 | SSPUSHPTR(sv); |
427 | SSPUSHINT(SAVEt_FREESV); |
428 | } |
429 | |
430 | void |
8ac85365 |
431 | save_freeop(OP *o) |
8990e307 |
432 | { |
11343788 |
433 | dTHR; |
8990e307 |
434 | SSCHECK(2); |
11343788 |
435 | SSPUSHPTR(o); |
8990e307 |
436 | SSPUSHINT(SAVEt_FREEOP); |
437 | } |
438 | |
439 | void |
8ac85365 |
440 | save_freepv(char *pv) |
8990e307 |
441 | { |
11343788 |
442 | dTHR; |
8990e307 |
443 | SSCHECK(2); |
444 | SSPUSHPTR(pv); |
445 | SSPUSHINT(SAVEt_FREEPV); |
446 | } |
447 | |
448 | void |
8ac85365 |
449 | save_clearsv(SV **svp) |
8990e307 |
450 | { |
11343788 |
451 | dTHR; |
8990e307 |
452 | SSCHECK(2); |
4aa0a1f7 |
453 | SSPUSHLONG((long)(svp-curpad)); |
8990e307 |
454 | SSPUSHINT(SAVEt_CLEARSV); |
455 | } |
456 | |
457 | void |
8ac85365 |
458 | save_delete(HV *hv, char *key, I32 klen) |
8990e307 |
459 | { |
11343788 |
460 | dTHR; |
8990e307 |
461 | SSCHECK(4); |
462 | SSPUSHINT(klen); |
463 | SSPUSHPTR(key); |
4e4c362e |
464 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
465 | SSPUSHINT(SAVEt_DELETE); |
466 | } |
467 | |
468 | void |
5d863698 |
469 | save_list(register SV **sarg, I32 maxsarg) |
79072805 |
470 | { |
11343788 |
471 | dTHR; |
79072805 |
472 | register SV *sv; |
473 | register I32 i; |
474 | |
79072805 |
475 | for (i = 1; i <= maxsarg; i++) { |
79072805 |
476 | sv = NEWSV(0,0); |
477 | sv_setsv(sv,sarg[i]); |
f46d017c |
478 | SSCHECK(3); |
479 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
480 | SSPUSHPTR(sv); /* remember the value */ |
481 | SSPUSHINT(SAVEt_ITEM); |
482 | } |
483 | } |
484 | |
485 | void |
8ac85365 |
486 | save_destructor(void (*f) (void *), void *p) |
a0d0e21e |
487 | { |
11343788 |
488 | dTHR; |
a0d0e21e |
489 | SSCHECK(3); |
490 | SSPUSHDPTR(f); |
491 | SSPUSHPTR(p); |
492 | SSPUSHINT(SAVEt_DESTRUCTOR); |
493 | } |
494 | |
495 | void |
4e4c362e |
496 | save_aelem(AV *av, I32 idx, SV **sptr) |
497 | { |
498 | dTHR; |
499 | SSCHECK(4); |
500 | SSPUSHPTR(SvREFCNT_inc(av)); |
501 | SSPUSHINT(idx); |
502 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
503 | SSPUSHINT(SAVEt_AELEM); |
504 | save_scalar_at(sptr); |
505 | } |
506 | |
507 | void |
508 | save_helem(HV *hv, SV *key, SV **sptr) |
509 | { |
510 | dTHR; |
511 | SSCHECK(4); |
512 | SSPUSHPTR(SvREFCNT_inc(hv)); |
513 | SSPUSHPTR(SvREFCNT_inc(key)); |
514 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
515 | SSPUSHINT(SAVEt_HELEM); |
516 | save_scalar_at(sptr); |
517 | } |
518 | |
519 | void |
8ac85365 |
520 | save_op(void) |
462e5cf6 |
521 | { |
522 | dTHR; |
523 | SSCHECK(2); |
524 | SSPUSHPTR(op); |
525 | SSPUSHINT(SAVEt_OP); |
526 | } |
527 | |
528 | void |
8ac85365 |
529 | leave_scope(I32 base) |
79072805 |
530 | { |
11343788 |
531 | dTHR; |
79072805 |
532 | register SV *sv; |
533 | register SV *value; |
534 | register GV *gv; |
535 | register AV *av; |
536 | register HV *hv; |
537 | register void* ptr; |
161b7d16 |
538 | I32 i; |
79072805 |
539 | |
540 | if (base < -1) |
463ee0b2 |
541 | croak("panic: corrupt saved stack index"); |
79072805 |
542 | while (savestack_ix > base) { |
543 | switch (SSPOPINT) { |
544 | case SAVEt_ITEM: /* normal string */ |
545 | value = (SV*)SSPOPPTR; |
546 | sv = (SV*)SSPOPPTR; |
547 | sv_replace(sv,value); |
748a9306 |
548 | localizing = 2; |
79072805 |
549 | SvSETMAGIC(sv); |
748a9306 |
550 | localizing = 0; |
79072805 |
551 | break; |
552 | case SAVEt_SV: /* scalar reference */ |
553 | value = (SV*)SSPOPPTR; |
554 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
555 | ptr = &GvSV(gv); |
4e4c362e |
556 | SvREFCNT_dec(gv); |
7a4c00b4 |
557 | goto restore_sv; |
79072805 |
558 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
559 | value = (SV*)SSPOPPTR; |
79072805 |
560 | ptr = SSPOPPTR; |
7a4c00b4 |
561 | restore_sv: |
79072805 |
562 | sv = *(SV**)ptr; |
54b9620d |
563 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
564 | "restore svref: %p %p:%s -> %p:%s\n", |
565 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
748a9306 |
566 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
567 | SvTYPE(sv) != SVt_PVGV) |
568 | { |
a0d0e21e |
569 | (void)SvUPGRADE(value, SvTYPE(sv)); |
570 | SvMAGIC(value) = SvMAGIC(sv); |
571 | SvFLAGS(value) |= SvMAGICAL(sv); |
572 | SvMAGICAL_off(sv); |
79072805 |
573 | SvMAGIC(sv) = 0; |
a0d0e21e |
574 | } |
7a4c00b4 |
575 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
576 | SvTYPE(value) != SVt_PVGV) |
577 | { |
578 | SvFLAGS(value) |= (SvFLAGS(value) & |
579 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
580 | SvMAGICAL_off(value); |
581 | SvMAGIC(value) = 0; |
582 | } |
8990e307 |
583 | SvREFCNT_dec(sv); |
a0d0e21e |
584 | *(SV**)ptr = value; |
748a9306 |
585 | localizing = 2; |
a0d0e21e |
586 | SvSETMAGIC(value); |
748a9306 |
587 | localizing = 0; |
4e4c362e |
588 | SvREFCNT_dec(value); |
79072805 |
589 | break; |
590 | case SAVEt_AV: /* array reference */ |
591 | av = (AV*)SSPOPPTR; |
592 | gv = (GV*)SSPOPPTR; |
fb73857a |
593 | if (GvAV(gv)) { |
594 | AV *goner = GvAV(gv); |
595 | SvMAGIC(av) = SvMAGIC(goner); |
596 | SvFLAGS(av) |= SvMAGICAL(goner); |
597 | SvMAGICAL_off(goner); |
598 | SvMAGIC(goner) = 0; |
599 | SvREFCNT_dec(goner); |
600 | } |
79072805 |
601 | GvAV(gv) = av; |
fb73857a |
602 | if (SvMAGICAL(av)) { |
603 | localizing = 2; |
604 | SvSETMAGIC((SV*)av); |
605 | localizing = 0; |
606 | } |
79072805 |
607 | break; |
608 | case SAVEt_HV: /* hash reference */ |
609 | hv = (HV*)SSPOPPTR; |
610 | gv = (GV*)SSPOPPTR; |
fb73857a |
611 | if (GvHV(gv)) { |
612 | HV *goner = GvHV(gv); |
613 | SvMAGIC(hv) = SvMAGIC(goner); |
614 | SvFLAGS(hv) |= SvMAGICAL(goner); |
615 | SvMAGICAL_off(goner); |
616 | SvMAGIC(goner) = 0; |
617 | SvREFCNT_dec(goner); |
618 | } |
79072805 |
619 | GvHV(gv) = hv; |
fb73857a |
620 | if (SvMAGICAL(hv)) { |
621 | localizing = 2; |
622 | SvSETMAGIC((SV*)hv); |
623 | localizing = 0; |
624 | } |
79072805 |
625 | break; |
626 | case SAVEt_INT: /* int reference */ |
627 | ptr = SSPOPPTR; |
628 | *(int*)ptr = (int)SSPOPINT; |
629 | break; |
85e6fe83 |
630 | case SAVEt_LONG: /* long reference */ |
631 | ptr = SSPOPPTR; |
632 | *(long*)ptr = (long)SSPOPLONG; |
633 | break; |
79072805 |
634 | case SAVEt_I32: /* I32 reference */ |
635 | ptr = SSPOPPTR; |
636 | *(I32*)ptr = (I32)SSPOPINT; |
637 | break; |
55497cff |
638 | case SAVEt_I16: /* I16 reference */ |
639 | ptr = SSPOPPTR; |
640 | *(I16*)ptr = (I16)SSPOPINT; |
641 | break; |
a0d0e21e |
642 | case SAVEt_IV: /* IV reference */ |
643 | ptr = SSPOPPTR; |
644 | *(IV*)ptr = (IV)SSPOPIV; |
645 | break; |
79072805 |
646 | case SAVEt_SPTR: /* SV* reference */ |
647 | ptr = SSPOPPTR; |
648 | *(SV**)ptr = (SV*)SSPOPPTR; |
649 | break; |
85e6fe83 |
650 | case SAVEt_PPTR: /* char* reference */ |
651 | ptr = SSPOPPTR; |
652 | *(char**)ptr = (char*)SSPOPPTR; |
653 | break; |
79072805 |
654 | case SAVEt_HPTR: /* HV* reference */ |
655 | ptr = SSPOPPTR; |
656 | *(HV**)ptr = (HV*)SSPOPPTR; |
657 | break; |
658 | case SAVEt_APTR: /* AV* reference */ |
659 | ptr = SSPOPPTR; |
660 | *(AV**)ptr = (AV*)SSPOPPTR; |
661 | break; |
662 | case SAVEt_NSTAB: |
663 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
664 | (void)sv_clear((SV*)gv); |
79072805 |
665 | break; |
fb73857a |
666 | case SAVEt_GP: /* scalar reference */ |
79072805 |
667 | ptr = SSPOPPTR; |
668 | gv = (GV*)SSPOPPTR; |
fb73857a |
669 | if (SvPOK(gv) && SvLEN(gv) > 0) { |
670 | Safefree(SvPVX(gv)); |
671 | } |
672 | SvPVX(gv) = (char *)SSPOPPTR; |
673 | SvCUR(gv) = (STRLEN)SSPOPIV; |
674 | SvLEN(gv) = (STRLEN)SSPOPIV; |
f46d017c |
675 | gp_free(gv); |
676 | GvGP(gv) = (GP*)ptr; |
4633a7c4 |
677 | SvREFCNT_dec(gv); |
79072805 |
678 | break; |
8990e307 |
679 | case SAVEt_FREESV: |
680 | ptr = SSPOPPTR; |
681 | SvREFCNT_dec((SV*)ptr); |
682 | break; |
683 | case SAVEt_FREEOP: |
684 | ptr = SSPOPPTR; |
46fc3d4c |
685 | if (comppad) |
686 | curpad = AvARRAY(comppad); |
8990e307 |
687 | op_free((OP*)ptr); |
688 | break; |
689 | case SAVEt_FREEPV: |
690 | ptr = SSPOPPTR; |
691 | Safefree((char*)ptr); |
692 | break; |
693 | case SAVEt_CLEARSV: |
4aa0a1f7 |
694 | ptr = (void*)&curpad[SSPOPLONG]; |
8990e307 |
695 | sv = *(SV**)ptr; |
bc44cdaf |
696 | /* Can clear pad variable in place? */ |
697 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
8990e307 |
698 | if (SvTHINKFIRST(sv)) { |
699 | if (SvREADONLY(sv)) |
700 | croak("panic: leave_scope clearsv"); |
701 | if (SvROK(sv)) |
702 | sv_unref(sv); |
703 | } |
a0d0e21e |
704 | if (SvMAGICAL(sv)) |
705 | mg_free(sv); |
8990e307 |
706 | |
707 | switch (SvTYPE(sv)) { |
708 | case SVt_NULL: |
709 | break; |
710 | case SVt_PVAV: |
44a8e56a |
711 | av_clear((AV*)sv); |
8990e307 |
712 | break; |
713 | case SVt_PVHV: |
44a8e56a |
714 | hv_clear((HV*)sv); |
8990e307 |
715 | break; |
716 | case SVt_PVCV: |
5377b701 |
717 | croak("panic: leave_scope pad code"); |
718 | case SVt_RV: |
719 | case SVt_IV: |
720 | case SVt_NV: |
721 | (void)SvOK_off(sv); |
8990e307 |
722 | break; |
723 | default: |
a0d0e21e |
724 | (void)SvOK_off(sv); |
5377b701 |
725 | (void)SvOOK_off(sv); |
8990e307 |
726 | break; |
727 | } |
728 | } |
729 | else { /* Someone has a claim on this, so abandon it. */ |
4aa0a1f7 |
730 | U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); |
8990e307 |
731 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
732 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
733 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
734 | default: *(SV**)ptr = NEWSV(0,0); break; |
735 | } |
53868620 |
736 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
4aa0a1f7 |
737 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
8990e307 |
738 | } |
739 | break; |
740 | case SAVEt_DELETE: |
741 | ptr = SSPOPPTR; |
742 | hv = (HV*)ptr; |
743 | ptr = SSPOPPTR; |
748a9306 |
744 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
745 | SvREFCNT_dec(hv); |
adbc6bb1 |
746 | Safefree(ptr); |
8990e307 |
747 | break; |
a0d0e21e |
748 | case SAVEt_DESTRUCTOR: |
749 | ptr = SSPOPPTR; |
750 | (*SSPOPDPTR)(ptr); |
751 | break; |
752 | case SAVEt_REGCONTEXT: |
161b7d16 |
753 | i = SSPOPINT; |
754 | savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
755 | break; |
55497cff |
756 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
757 | i = SSPOPINT; |
758 | stack_sp = stack_base + i; |
55497cff |
759 | break; |
161b7d16 |
760 | case SAVEt_AELEM: /* array element */ |
761 | value = (SV*)SSPOPPTR; |
762 | i = SSPOPINT; |
763 | av = (AV*)SSPOPPTR; |
764 | ptr = av_fetch(av,i,1); |
4e4c362e |
765 | if (ptr) { |
766 | sv = *(SV**)ptr; |
767 | if (sv && sv != &sv_undef) { |
768 | if (SvRMAGICAL(av) && mg_find((SV*)av, 'P')) |
769 | (void)SvREFCNT_inc(sv); |
770 | SvREFCNT_dec(av); |
771 | goto restore_sv; |
772 | } |
773 | } |
774 | SvREFCNT_dec(av); |
775 | SvREFCNT_dec(value); |
776 | break; |
161b7d16 |
777 | case SAVEt_HELEM: /* hash element */ |
778 | value = (SV*)SSPOPPTR; |
9002cb76 |
779 | sv = (SV*)SSPOPPTR; |
161b7d16 |
780 | hv = (HV*)SSPOPPTR; |
781 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
782 | if (ptr) { |
783 | SV *oval = HeVAL((HE*)ptr); |
784 | if (oval && oval != &sv_undef) { |
785 | ptr = &HeVAL((HE*)ptr); |
786 | if (SvRMAGICAL(hv) && mg_find((SV*)hv, 'P')) |
787 | (void)SvREFCNT_inc(*(SV**)ptr); |
788 | SvREFCNT_dec(hv); |
789 | SvREFCNT_dec(sv); |
790 | goto restore_sv; |
791 | } |
792 | } |
793 | SvREFCNT_dec(hv); |
794 | SvREFCNT_dec(sv); |
795 | SvREFCNT_dec(value); |
796 | break; |
462e5cf6 |
797 | case SAVEt_OP: |
798 | op = (OP*)SSPOPPTR; |
799 | break; |
79072805 |
800 | default: |
463ee0b2 |
801 | croak("panic: leave_scope inconsistency"); |
79072805 |
802 | } |
803 | } |
804 | } |
8990e307 |
805 | |
806 | #ifdef DEBUGGING |
1f96a9ed |
807 | |
8990e307 |
808 | void |
c09156bb |
809 | cx_dump(PERL_CONTEXT *cx) |
8990e307 |
810 | { |
11343788 |
811 | dTHR; |
fb73857a |
812 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), block_type[cx->cx_type]); |
8990e307 |
813 | if (cx->cx_type != CXt_SUBST) { |
760ac839 |
814 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
815 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop); |
816 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
817 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
818 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); |
819 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm); |
820 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
821 | } |
822 | switch (cx->cx_type) { |
823 | case CXt_NULL: |
824 | case CXt_BLOCK: |
825 | break; |
826 | case CXt_SUB: |
760ac839 |
827 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n", |
8990e307 |
828 | (long)cx->blk_sub.cv); |
760ac839 |
829 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n", |
8990e307 |
830 | (long)cx->blk_sub.gv); |
760ac839 |
831 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n", |
8990e307 |
832 | (long)cx->blk_sub.dfoutgv); |
760ac839 |
833 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
834 | (long)cx->blk_sub.olddepth); |
760ac839 |
835 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
836 | (int)cx->blk_sub.hasargs); |
837 | break; |
838 | case CXt_EVAL: |
760ac839 |
839 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
840 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
841 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
c07a80fd |
842 | op_name[cx->blk_eval.old_op_type], |
843 | op_desc[cx->blk_eval.old_op_type]); |
760ac839 |
844 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
8990e307 |
845 | cx->blk_eval.old_name); |
760ac839 |
846 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n", |
8990e307 |
847 | (long)cx->blk_eval.old_eval_root); |
848 | break; |
849 | |
850 | case CXt_LOOP: |
760ac839 |
851 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
852 | cx->blk_loop.label); |
760ac839 |
853 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
854 | (long)cx->blk_loop.resetsp); |
760ac839 |
855 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n", |
8990e307 |
856 | (long)cx->blk_loop.redo_op); |
760ac839 |
857 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n", |
8990e307 |
858 | (long)cx->blk_loop.next_op); |
760ac839 |
859 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n", |
8990e307 |
860 | (long)cx->blk_loop.last_op); |
760ac839 |
861 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
862 | (long)cx->blk_loop.iterix); |
760ac839 |
863 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n", |
8990e307 |
864 | (long)cx->blk_loop.iterary); |
760ac839 |
865 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n", |
8990e307 |
866 | (long)cx->blk_loop.itervar); |
867 | if (cx->blk_loop.itervar) |
760ac839 |
868 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n", |
8990e307 |
869 | (long)cx->blk_loop.itersave); |
7a4c00b4 |
870 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n", |
871 | (long)cx->blk_loop.iterlval); |
8990e307 |
872 | break; |
873 | |
874 | case CXt_SUBST: |
760ac839 |
875 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
876 | (long)cx->sb_iters); |
760ac839 |
877 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
878 | (long)cx->sb_maxiters); |
760ac839 |
879 | PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n", |
8990e307 |
880 | (long)cx->sb_safebase); |
760ac839 |
881 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
882 | (long)cx->sb_once); |
760ac839 |
883 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
884 | cx->sb_orig); |
760ac839 |
885 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n", |
8990e307 |
886 | (long)cx->sb_dstr); |
760ac839 |
887 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n", |
8990e307 |
888 | (long)cx->sb_targ); |
760ac839 |
889 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n", |
8990e307 |
890 | (long)cx->sb_s); |
760ac839 |
891 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n", |
8990e307 |
892 | (long)cx->sb_m); |
760ac839 |
893 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n", |
8990e307 |
894 | (long)cx->sb_strend); |
c90c0ff4 |
895 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%lx\n", |
896 | (long)cx->sb_rxres); |
8990e307 |
897 | break; |
898 | } |
899 | } |
900 | #endif |