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 |
3280af22 |
27 | PL_stack_sp = sp; |
2ce36478 |
28 | #ifndef STRESS_REALLOC |
3280af22 |
29 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 |
30 | #else |
6b88bc9c |
31 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 |
32 | #endif |
a60c0954 |
33 | #if defined(DEBUGGING) && !defined(USE_THREADS) |
34 | growing--; |
35 | #endif |
3280af22 |
36 | return PL_stack_sp; |
a0d0e21e |
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); |
3280af22 |
54 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d |
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; |
e788e7d3 |
60 | si->si_type = PERLSI_UNDEF; |
e336de0d |
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; |
3280af22 |
78 | if (PL_retstack_ix == PL_retstack_max) { |
79 | PL_retstack_max = GROW(PL_retstack_max); |
80 | Renew(PL_retstack, PL_retstack_max, OP*); |
79072805 |
81 | } |
3280af22 |
82 | PL_retstack[PL_retstack_ix++] = retop; |
79072805 |
83 | } |
84 | |
85 | OP * |
8ac85365 |
86 | pop_return(void) |
79072805 |
87 | { |
11343788 |
88 | dTHR; |
3280af22 |
89 | if (PL_retstack_ix > 0) |
90 | return PL_retstack[--PL_retstack_ix]; |
79072805 |
91 | else |
92 | return Nullop; |
93 | } |
94 | |
95 | void |
8ac85365 |
96 | push_scope(void) |
79072805 |
97 | { |
11343788 |
98 | dTHR; |
3280af22 |
99 | if (PL_scopestack_ix == PL_scopestack_max) { |
100 | PL_scopestack_max = GROW(PL_scopestack_max); |
101 | Renew(PL_scopestack, PL_scopestack_max, I32); |
79072805 |
102 | } |
3280af22 |
103 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 |
104 | |
105 | } |
106 | |
107 | void |
8ac85365 |
108 | pop_scope(void) |
79072805 |
109 | { |
11343788 |
110 | dTHR; |
3280af22 |
111 | I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 |
112 | LEAVE_SCOPE(oldsave); |
79072805 |
113 | } |
114 | |
115 | void |
8ac85365 |
116 | markstack_grow(void) |
a0d0e21e |
117 | { |
11343788 |
118 | dTHR; |
3280af22 |
119 | I32 oldmax = PL_markstack_max - PL_markstack; |
2ce36478 |
120 | I32 newmax = GROW(oldmax); |
a0d0e21e |
121 | |
3280af22 |
122 | Renew(PL_markstack, newmax, I32); |
123 | PL_markstack_ptr = PL_markstack + oldmax; |
124 | PL_markstack_max = PL_markstack + newmax; |
a0d0e21e |
125 | } |
126 | |
127 | void |
8ac85365 |
128 | savestack_grow(void) |
79072805 |
129 | { |
11343788 |
130 | dTHR; |
3280af22 |
131 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
132 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 |
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? */ |
3280af22 |
142 | I32 myfloor = PL_tmps_floor; |
143 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
144 | SV* sv = PL_tmps_stack[PL_tmps_ix]; |
145 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; |
463ee0b2 |
146 | if (sv) { |
463ee0b2 |
147 | SvTEMP_off(sv); |
8990e307 |
148 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 |
149 | } |
79072805 |
150 | } |
151 | } |
152 | |
76e3520e |
153 | STATIC SV * |
8ac85365 |
154 | save_scalar_at(SV **sptr) |
79072805 |
155 | { |
11343788 |
156 | dTHR; |
79072805 |
157 | register SV *sv; |
7a4c00b4 |
158 | SV *osv = *sptr; |
79072805 |
159 | |
7a4c00b4 |
160 | sv = *sptr = NEWSV(0,0); |
a0d0e21e |
161 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
79072805 |
162 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e |
163 | if (SvGMAGICAL(osv)) { |
748a9306 |
164 | MAGIC* mg; |
3280af22 |
165 | bool oldtainted = PL_tainted; |
a0d0e21e |
166 | mg_get(osv); |
3280af22 |
167 | if (PL_tainting && PL_tainted && (mg = mg_find(osv, 't'))) { |
748a9306 |
168 | SAVESPTR(mg->mg_obj); |
169 | mg->mg_obj = osv; |
170 | } |
a0d0e21e |
171 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
172 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 |
173 | PL_tainted = oldtainted; |
a0d0e21e |
174 | } |
79072805 |
175 | SvMAGIC(sv) = SvMAGIC(osv); |
a0d0e21e |
176 | SvFLAGS(sv) |= SvMAGICAL(osv); |
3280af22 |
177 | PL_localizing = 1; |
79072805 |
178 | SvSETMAGIC(sv); |
3280af22 |
179 | PL_localizing = 0; |
79072805 |
180 | } |
181 | return sv; |
182 | } |
183 | |
7a4c00b4 |
184 | SV * |
8ac85365 |
185 | save_scalar(GV *gv) |
7a4c00b4 |
186 | { |
11343788 |
187 | dTHR; |
4e4c362e |
188 | SV **sptr = &GvSV(gv); |
7a4c00b4 |
189 | SSCHECK(3); |
4e4c362e |
190 | SSPUSHPTR(SvREFCNT_inc(gv)); |
191 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
192 | SSPUSHINT(SAVEt_SV); |
4e4c362e |
193 | return save_scalar_at(sptr); |
7a4c00b4 |
194 | } |
195 | |
196 | SV* |
8ac85365 |
197 | save_svref(SV **sptr) |
7a4c00b4 |
198 | { |
11343788 |
199 | dTHR; |
7a4c00b4 |
200 | SSCHECK(3); |
201 | SSPUSHPTR(sptr); |
4e4c362e |
202 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
203 | SSPUSHINT(SAVEt_SVREF); |
204 | return save_scalar_at(sptr); |
205 | } |
206 | |
79072805 |
207 | void |
8ac85365 |
208 | save_gp(GV *gv, I32 empty) |
79072805 |
209 | { |
e858de61 |
210 | dTHR; |
fb73857a |
211 | SSCHECK(6); |
212 | SSPUSHIV((IV)SvLEN(gv)); |
213 | SvLEN(gv) = 0; /* forget that anything was allocated here */ |
214 | SSPUSHIV((IV)SvCUR(gv)); |
215 | SSPUSHPTR(SvPVX(gv)); |
216 | SvPOK_off(gv); |
4633a7c4 |
217 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc |
218 | SSPUSHPTR(GvGP(gv)); |
79072805 |
219 | SSPUSHINT(SAVEt_GP); |
220 | |
5f05dabc |
221 | if (empty) { |
222 | register GP *gp; |
fae75791 |
223 | |
224 | if (GvCVu(gv)) |
3280af22 |
225 | PL_sub_generation++; /* taking a method out of circulation */ |
5f05dabc |
226 | Newz(602, gp, 1, GP); |
44a8e56a |
227 | GvGP(gv) = gp_ref(gp); |
5f05dabc |
228 | GvSV(gv) = NEWSV(72,0); |
3280af22 |
229 | GvLINE(gv) = PL_curcop->cop_line; |
5f05dabc |
230 | GvEGV(gv) = gv; |
231 | } |
232 | else { |
44a8e56a |
233 | gp_ref(GvGP(gv)); |
5f05dabc |
234 | GvINTRO_on(gv); |
235 | } |
79072805 |
236 | } |
79072805 |
237 | |
79072805 |
238 | AV * |
8ac85365 |
239 | save_ary(GV *gv) |
79072805 |
240 | { |
11343788 |
241 | dTHR; |
67a38de0 |
242 | AV *oav = GvAVn(gv); |
243 | AV *av; |
fb73857a |
244 | |
67a38de0 |
245 | if (!AvREAL(oav) && AvREIFY(oav)) |
246 | av_reify(oav); |
79072805 |
247 | SSCHECK(3); |
248 | SSPUSHPTR(gv); |
67a38de0 |
249 | SSPUSHPTR(oav); |
79072805 |
250 | SSPUSHINT(SAVEt_AV); |
251 | |
252 | GvAV(gv) = Null(AV*); |
fb73857a |
253 | av = GvAVn(gv); |
254 | if (SvMAGIC(oav)) { |
255 | SvMAGIC(av) = SvMAGIC(oav); |
256 | SvFLAGS(av) |= SvMAGICAL(oav); |
257 | SvMAGICAL_off(oav); |
258 | SvMAGIC(oav) = 0; |
3280af22 |
259 | PL_localizing = 1; |
fb73857a |
260 | SvSETMAGIC((SV*)av); |
3280af22 |
261 | PL_localizing = 0; |
fb73857a |
262 | } |
263 | return av; |
79072805 |
264 | } |
265 | |
266 | HV * |
8ac85365 |
267 | save_hash(GV *gv) |
79072805 |
268 | { |
11343788 |
269 | dTHR; |
fb73857a |
270 | HV *ohv, *hv; |
271 | |
79072805 |
272 | SSCHECK(3); |
273 | SSPUSHPTR(gv); |
fb73857a |
274 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
275 | SSPUSHINT(SAVEt_HV); |
276 | |
277 | GvHV(gv) = Null(HV*); |
fb73857a |
278 | hv = GvHVn(gv); |
279 | if (SvMAGIC(ohv)) { |
280 | SvMAGIC(hv) = SvMAGIC(ohv); |
281 | SvFLAGS(hv) |= SvMAGICAL(ohv); |
282 | SvMAGICAL_off(ohv); |
283 | SvMAGIC(ohv) = 0; |
3280af22 |
284 | PL_localizing = 1; |
fb73857a |
285 | SvSETMAGIC((SV*)hv); |
3280af22 |
286 | PL_localizing = 0; |
fb73857a |
287 | } |
288 | return hv; |
79072805 |
289 | } |
290 | |
291 | void |
8ac85365 |
292 | save_item(register SV *item) |
79072805 |
293 | { |
11343788 |
294 | dTHR; |
f46d017c |
295 | register SV *sv = NEWSV(0,0); |
79072805 |
296 | |
f46d017c |
297 | sv_setsv(sv,item); |
79072805 |
298 | SSCHECK(3); |
299 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
300 | SSPUSHPTR(sv); /* remember the value */ |
301 | SSPUSHINT(SAVEt_ITEM); |
302 | } |
303 | |
304 | void |
8ac85365 |
305 | save_int(int *intp) |
79072805 |
306 | { |
11343788 |
307 | dTHR; |
79072805 |
308 | SSCHECK(3); |
309 | SSPUSHINT(*intp); |
310 | SSPUSHPTR(intp); |
311 | SSPUSHINT(SAVEt_INT); |
312 | } |
313 | |
314 | void |
8ac85365 |
315 | save_long(long int *longp) |
85e6fe83 |
316 | { |
11343788 |
317 | dTHR; |
85e6fe83 |
318 | SSCHECK(3); |
319 | SSPUSHLONG(*longp); |
320 | SSPUSHPTR(longp); |
321 | SSPUSHINT(SAVEt_LONG); |
322 | } |
323 | |
324 | void |
8ac85365 |
325 | save_I32(I32 *intp) |
79072805 |
326 | { |
11343788 |
327 | dTHR; |
79072805 |
328 | SSCHECK(3); |
329 | SSPUSHINT(*intp); |
330 | SSPUSHPTR(intp); |
331 | SSPUSHINT(SAVEt_I32); |
332 | } |
333 | |
a0d0e21e |
334 | void |
8ac85365 |
335 | save_I16(I16 *intp) |
55497cff |
336 | { |
e858de61 |
337 | dTHR; |
55497cff |
338 | SSCHECK(3); |
339 | SSPUSHINT(*intp); |
340 | SSPUSHPTR(intp); |
341 | SSPUSHINT(SAVEt_I16); |
342 | } |
343 | |
344 | void |
8ac85365 |
345 | save_iv(IV *ivp) |
a0d0e21e |
346 | { |
11343788 |
347 | dTHR; |
a0d0e21e |
348 | SSCHECK(3); |
4aa0a1f7 |
349 | SSPUSHIV(*ivp); |
a0d0e21e |
350 | SSPUSHPTR(ivp); |
351 | SSPUSHINT(SAVEt_IV); |
352 | } |
353 | |
85e6fe83 |
354 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
355 | * force word-alignment and we'll miss the pointer. |
356 | */ |
357 | void |
8ac85365 |
358 | save_pptr(char **pptr) |
85e6fe83 |
359 | { |
11343788 |
360 | dTHR; |
85e6fe83 |
361 | SSCHECK(3); |
362 | SSPUSHPTR(*pptr); |
363 | SSPUSHPTR(pptr); |
364 | SSPUSHINT(SAVEt_PPTR); |
365 | } |
366 | |
79072805 |
367 | void |
8ac85365 |
368 | save_sptr(SV **sptr) |
79072805 |
369 | { |
11343788 |
370 | dTHR; |
79072805 |
371 | SSCHECK(3); |
372 | SSPUSHPTR(*sptr); |
373 | SSPUSHPTR(sptr); |
374 | SSPUSHINT(SAVEt_SPTR); |
375 | } |
376 | |
54b9620d |
377 | SV ** |
378 | save_threadsv(PADOFFSET i) |
379 | { |
380 | #ifdef USE_THREADS |
381 | dTHR; |
940cb80d |
382 | SV **svp = &THREADSV(i); /* XXX Change to save by offset */ |
8b73bbec |
383 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "save_threadsv %u: %p %p:%s\n", |
54b9620d |
384 | i, svp, *svp, SvPEEK(*svp))); |
385 | save_svref(svp); |
386 | return svp; |
387 | #else |
388 | croak("panic: save_threadsv called in non-threaded perl"); |
389 | return 0; |
390 | #endif /* USE_THREADS */ |
391 | } |
392 | |
79072805 |
393 | void |
8ac85365 |
394 | save_nogv(GV *gv) |
79072805 |
395 | { |
11343788 |
396 | dTHR; |
79072805 |
397 | SSCHECK(2); |
398 | SSPUSHPTR(gv); |
399 | SSPUSHINT(SAVEt_NSTAB); |
400 | } |
401 | |
402 | void |
8ac85365 |
403 | save_hptr(HV **hptr) |
79072805 |
404 | { |
11343788 |
405 | dTHR; |
79072805 |
406 | SSCHECK(3); |
85e6fe83 |
407 | SSPUSHPTR(*hptr); |
79072805 |
408 | SSPUSHPTR(hptr); |
409 | SSPUSHINT(SAVEt_HPTR); |
410 | } |
411 | |
412 | void |
8ac85365 |
413 | save_aptr(AV **aptr) |
79072805 |
414 | { |
11343788 |
415 | dTHR; |
79072805 |
416 | SSCHECK(3); |
85e6fe83 |
417 | SSPUSHPTR(*aptr); |
79072805 |
418 | SSPUSHPTR(aptr); |
419 | SSPUSHINT(SAVEt_APTR); |
420 | } |
421 | |
422 | void |
8ac85365 |
423 | save_freesv(SV *sv) |
8990e307 |
424 | { |
11343788 |
425 | dTHR; |
8990e307 |
426 | SSCHECK(2); |
427 | SSPUSHPTR(sv); |
428 | SSPUSHINT(SAVEt_FREESV); |
429 | } |
430 | |
431 | void |
8ac85365 |
432 | save_freeop(OP *o) |
8990e307 |
433 | { |
11343788 |
434 | dTHR; |
8990e307 |
435 | SSCHECK(2); |
11343788 |
436 | SSPUSHPTR(o); |
8990e307 |
437 | SSPUSHINT(SAVEt_FREEOP); |
438 | } |
439 | |
440 | void |
8ac85365 |
441 | save_freepv(char *pv) |
8990e307 |
442 | { |
11343788 |
443 | dTHR; |
8990e307 |
444 | SSCHECK(2); |
445 | SSPUSHPTR(pv); |
446 | SSPUSHINT(SAVEt_FREEPV); |
447 | } |
448 | |
449 | void |
8ac85365 |
450 | save_clearsv(SV **svp) |
8990e307 |
451 | { |
11343788 |
452 | dTHR; |
8990e307 |
453 | SSCHECK(2); |
3280af22 |
454 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 |
455 | SSPUSHINT(SAVEt_CLEARSV); |
456 | } |
457 | |
458 | void |
8ac85365 |
459 | save_delete(HV *hv, char *key, I32 klen) |
8990e307 |
460 | { |
11343788 |
461 | dTHR; |
8990e307 |
462 | SSCHECK(4); |
463 | SSPUSHINT(klen); |
464 | SSPUSHPTR(key); |
4e4c362e |
465 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
466 | SSPUSHINT(SAVEt_DELETE); |
467 | } |
468 | |
469 | void |
8ac85365 |
470 | save_list(register SV **sarg, I32 maxsarg) |
79072805 |
471 | { |
11343788 |
472 | dTHR; |
79072805 |
473 | register SV *sv; |
474 | register I32 i; |
475 | |
79072805 |
476 | for (i = 1; i <= maxsarg; i++) { |
79072805 |
477 | sv = NEWSV(0,0); |
478 | sv_setsv(sv,sarg[i]); |
f46d017c |
479 | SSCHECK(3); |
480 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
481 | SSPUSHPTR(sv); /* remember the value */ |
482 | SSPUSHINT(SAVEt_ITEM); |
483 | } |
484 | } |
485 | |
486 | void |
76e3520e |
487 | #ifdef PERL_OBJECT |
565764a8 |
488 | save_destructor(DESTRUCTORFUNC f, void* p) |
76e3520e |
489 | #else |
8ac85365 |
490 | save_destructor(void (*f) (void *), void *p) |
76e3520e |
491 | #endif |
a0d0e21e |
492 | { |
11343788 |
493 | dTHR; |
a0d0e21e |
494 | SSCHECK(3); |
495 | SSPUSHDPTR(f); |
496 | SSPUSHPTR(p); |
497 | SSPUSHINT(SAVEt_DESTRUCTOR); |
498 | } |
499 | |
500 | void |
4e4c362e |
501 | save_aelem(AV *av, I32 idx, SV **sptr) |
502 | { |
503 | dTHR; |
504 | SSCHECK(4); |
505 | SSPUSHPTR(SvREFCNT_inc(av)); |
506 | SSPUSHINT(idx); |
507 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
508 | SSPUSHINT(SAVEt_AELEM); |
509 | save_scalar_at(sptr); |
510 | } |
511 | |
512 | void |
513 | save_helem(HV *hv, SV *key, SV **sptr) |
514 | { |
515 | dTHR; |
516 | SSCHECK(4); |
517 | SSPUSHPTR(SvREFCNT_inc(hv)); |
518 | SSPUSHPTR(SvREFCNT_inc(key)); |
519 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
520 | SSPUSHINT(SAVEt_HELEM); |
521 | save_scalar_at(sptr); |
522 | } |
523 | |
524 | void |
8ac85365 |
525 | save_op(void) |
462e5cf6 |
526 | { |
527 | dTHR; |
528 | SSCHECK(2); |
533c011a |
529 | SSPUSHPTR(PL_op); |
462e5cf6 |
530 | SSPUSHINT(SAVEt_OP); |
531 | } |
532 | |
455ece5e |
533 | I32 |
534 | save_alloc(I32 size, I32 pad) |
535 | { |
536 | dTHR; |
537 | register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
538 | - (char*)PL_savestack); |
539 | register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
540 | |
541 | /* SSCHECK may not be good enough */ |
542 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
543 | savestack_grow(); |
544 | |
545 | PL_savestack_ix += elems; |
546 | SSPUSHINT(elems); |
547 | SSPUSHINT(SAVEt_ALLOC); |
548 | return start; |
549 | } |
550 | |
462e5cf6 |
551 | void |
8ac85365 |
552 | leave_scope(I32 base) |
79072805 |
553 | { |
11343788 |
554 | dTHR; |
79072805 |
555 | register SV *sv; |
556 | register SV *value; |
557 | register GV *gv; |
558 | register AV *av; |
559 | register HV *hv; |
560 | register void* ptr; |
161b7d16 |
561 | I32 i; |
79072805 |
562 | |
563 | if (base < -1) |
463ee0b2 |
564 | croak("panic: corrupt saved stack index"); |
3280af22 |
565 | while (PL_savestack_ix > base) { |
79072805 |
566 | switch (SSPOPINT) { |
567 | case SAVEt_ITEM: /* normal string */ |
568 | value = (SV*)SSPOPPTR; |
569 | sv = (SV*)SSPOPPTR; |
570 | sv_replace(sv,value); |
3280af22 |
571 | PL_localizing = 2; |
79072805 |
572 | SvSETMAGIC(sv); |
3280af22 |
573 | PL_localizing = 0; |
79072805 |
574 | break; |
575 | case SAVEt_SV: /* scalar reference */ |
576 | value = (SV*)SSPOPPTR; |
577 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
578 | ptr = &GvSV(gv); |
4e4c362e |
579 | SvREFCNT_dec(gv); |
7a4c00b4 |
580 | goto restore_sv; |
79072805 |
581 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
582 | value = (SV*)SSPOPPTR; |
79072805 |
583 | ptr = SSPOPPTR; |
7a4c00b4 |
584 | restore_sv: |
79072805 |
585 | sv = *(SV**)ptr; |
8b73bbec |
586 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d |
587 | "restore svref: %p %p:%s -> %p:%s\n", |
588 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
748a9306 |
589 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
590 | SvTYPE(sv) != SVt_PVGV) |
591 | { |
a0d0e21e |
592 | (void)SvUPGRADE(value, SvTYPE(sv)); |
593 | SvMAGIC(value) = SvMAGIC(sv); |
594 | SvFLAGS(value) |= SvMAGICAL(sv); |
595 | SvMAGICAL_off(sv); |
79072805 |
596 | SvMAGIC(sv) = 0; |
a0d0e21e |
597 | } |
7a4c00b4 |
598 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
599 | SvTYPE(value) != SVt_PVGV) |
600 | { |
601 | SvFLAGS(value) |= (SvFLAGS(value) & |
602 | (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
603 | SvMAGICAL_off(value); |
604 | SvMAGIC(value) = 0; |
605 | } |
8990e307 |
606 | SvREFCNT_dec(sv); |
a0d0e21e |
607 | *(SV**)ptr = value; |
3280af22 |
608 | PL_localizing = 2; |
a0d0e21e |
609 | SvSETMAGIC(value); |
3280af22 |
610 | PL_localizing = 0; |
4e4c362e |
611 | SvREFCNT_dec(value); |
79072805 |
612 | break; |
613 | case SAVEt_AV: /* array reference */ |
614 | av = (AV*)SSPOPPTR; |
615 | gv = (GV*)SSPOPPTR; |
fb73857a |
616 | if (GvAV(gv)) { |
617 | AV *goner = GvAV(gv); |
618 | SvMAGIC(av) = SvMAGIC(goner); |
619 | SvFLAGS(av) |= SvMAGICAL(goner); |
620 | SvMAGICAL_off(goner); |
621 | SvMAGIC(goner) = 0; |
622 | SvREFCNT_dec(goner); |
623 | } |
79072805 |
624 | GvAV(gv) = av; |
fb73857a |
625 | if (SvMAGICAL(av)) { |
3280af22 |
626 | PL_localizing = 2; |
fb73857a |
627 | SvSETMAGIC((SV*)av); |
3280af22 |
628 | PL_localizing = 0; |
fb73857a |
629 | } |
79072805 |
630 | break; |
631 | case SAVEt_HV: /* hash reference */ |
632 | hv = (HV*)SSPOPPTR; |
633 | gv = (GV*)SSPOPPTR; |
fb73857a |
634 | if (GvHV(gv)) { |
635 | HV *goner = GvHV(gv); |
636 | SvMAGIC(hv) = SvMAGIC(goner); |
637 | SvFLAGS(hv) |= SvMAGICAL(goner); |
638 | SvMAGICAL_off(goner); |
639 | SvMAGIC(goner) = 0; |
640 | SvREFCNT_dec(goner); |
641 | } |
79072805 |
642 | GvHV(gv) = hv; |
fb73857a |
643 | if (SvMAGICAL(hv)) { |
3280af22 |
644 | PL_localizing = 2; |
fb73857a |
645 | SvSETMAGIC((SV*)hv); |
3280af22 |
646 | PL_localizing = 0; |
fb73857a |
647 | } |
79072805 |
648 | break; |
649 | case SAVEt_INT: /* int reference */ |
650 | ptr = SSPOPPTR; |
651 | *(int*)ptr = (int)SSPOPINT; |
652 | break; |
85e6fe83 |
653 | case SAVEt_LONG: /* long reference */ |
654 | ptr = SSPOPPTR; |
655 | *(long*)ptr = (long)SSPOPLONG; |
656 | break; |
79072805 |
657 | case SAVEt_I32: /* I32 reference */ |
658 | ptr = SSPOPPTR; |
659 | *(I32*)ptr = (I32)SSPOPINT; |
660 | break; |
55497cff |
661 | case SAVEt_I16: /* I16 reference */ |
662 | ptr = SSPOPPTR; |
663 | *(I16*)ptr = (I16)SSPOPINT; |
664 | break; |
a0d0e21e |
665 | case SAVEt_IV: /* IV reference */ |
666 | ptr = SSPOPPTR; |
667 | *(IV*)ptr = (IV)SSPOPIV; |
668 | break; |
79072805 |
669 | case SAVEt_SPTR: /* SV* reference */ |
670 | ptr = SSPOPPTR; |
671 | *(SV**)ptr = (SV*)SSPOPPTR; |
672 | break; |
85e6fe83 |
673 | case SAVEt_PPTR: /* char* reference */ |
674 | ptr = SSPOPPTR; |
675 | *(char**)ptr = (char*)SSPOPPTR; |
676 | break; |
79072805 |
677 | case SAVEt_HPTR: /* HV* reference */ |
678 | ptr = SSPOPPTR; |
679 | *(HV**)ptr = (HV*)SSPOPPTR; |
680 | break; |
681 | case SAVEt_APTR: /* AV* reference */ |
682 | ptr = SSPOPPTR; |
683 | *(AV**)ptr = (AV*)SSPOPPTR; |
684 | break; |
685 | case SAVEt_NSTAB: |
686 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
687 | (void)sv_clear((SV*)gv); |
79072805 |
688 | break; |
fb73857a |
689 | case SAVEt_GP: /* scalar reference */ |
79072805 |
690 | ptr = SSPOPPTR; |
691 | gv = (GV*)SSPOPPTR; |
ed6c1d6b |
692 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
fb73857a |
693 | Safefree(SvPVX(gv)); |
694 | } |
695 | SvPVX(gv) = (char *)SSPOPPTR; |
696 | SvCUR(gv) = (STRLEN)SSPOPIV; |
697 | SvLEN(gv) = (STRLEN)SSPOPIV; |
f46d017c |
698 | gp_free(gv); |
699 | GvGP(gv) = (GP*)ptr; |
fae75791 |
700 | if (GvCVu(gv)) |
3280af22 |
701 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 |
702 | SvREFCNT_dec(gv); |
79072805 |
703 | break; |
8990e307 |
704 | case SAVEt_FREESV: |
705 | ptr = SSPOPPTR; |
706 | SvREFCNT_dec((SV*)ptr); |
707 | break; |
708 | case SAVEt_FREEOP: |
709 | ptr = SSPOPPTR; |
3280af22 |
710 | if (PL_comppad) |
711 | PL_curpad = AvARRAY(PL_comppad); |
8990e307 |
712 | op_free((OP*)ptr); |
713 | break; |
714 | case SAVEt_FREEPV: |
715 | ptr = SSPOPPTR; |
716 | Safefree((char*)ptr); |
717 | break; |
718 | case SAVEt_CLEARSV: |
3280af22 |
719 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 |
720 | sv = *(SV**)ptr; |
bc44cdaf |
721 | /* Can clear pad variable in place? */ |
722 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
8990e307 |
723 | if (SvTHINKFIRST(sv)) { |
724 | if (SvREADONLY(sv)) |
725 | croak("panic: leave_scope clearsv"); |
726 | if (SvROK(sv)) |
727 | sv_unref(sv); |
728 | } |
a0d0e21e |
729 | if (SvMAGICAL(sv)) |
730 | mg_free(sv); |
8990e307 |
731 | |
732 | switch (SvTYPE(sv)) { |
733 | case SVt_NULL: |
734 | break; |
735 | case SVt_PVAV: |
44a8e56a |
736 | av_clear((AV*)sv); |
8990e307 |
737 | break; |
738 | case SVt_PVHV: |
44a8e56a |
739 | hv_clear((HV*)sv); |
8990e307 |
740 | break; |
741 | case SVt_PVCV: |
5377b701 |
742 | croak("panic: leave_scope pad code"); |
743 | case SVt_RV: |
744 | case SVt_IV: |
745 | case SVt_NV: |
746 | (void)SvOK_off(sv); |
8990e307 |
747 | break; |
748 | default: |
a0d0e21e |
749 | (void)SvOK_off(sv); |
5377b701 |
750 | (void)SvOOK_off(sv); |
8990e307 |
751 | break; |
752 | } |
753 | } |
754 | else { /* Someone has a claim on this, so abandon it. */ |
4aa0a1f7 |
755 | U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP); |
8990e307 |
756 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
757 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
758 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
759 | default: *(SV**)ptr = NEWSV(0,0); break; |
760 | } |
53868620 |
761 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
4aa0a1f7 |
762 | SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */ |
8990e307 |
763 | } |
764 | break; |
765 | case SAVEt_DELETE: |
766 | ptr = SSPOPPTR; |
767 | hv = (HV*)ptr; |
768 | ptr = SSPOPPTR; |
748a9306 |
769 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
770 | SvREFCNT_dec(hv); |
adbc6bb1 |
771 | Safefree(ptr); |
8990e307 |
772 | break; |
a0d0e21e |
773 | case SAVEt_DESTRUCTOR: |
774 | ptr = SSPOPPTR; |
565764a8 |
775 | (CALLDESTRUCTOR)(ptr); |
a0d0e21e |
776 | break; |
777 | case SAVEt_REGCONTEXT: |
455ece5e |
778 | case SAVEt_ALLOC: |
161b7d16 |
779 | i = SSPOPINT; |
3280af22 |
780 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
781 | break; |
55497cff |
782 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
783 | i = SSPOPINT; |
3280af22 |
784 | PL_stack_sp = PL_stack_base + i; |
55497cff |
785 | break; |
161b7d16 |
786 | case SAVEt_AELEM: /* array element */ |
787 | value = (SV*)SSPOPPTR; |
788 | i = SSPOPINT; |
789 | av = (AV*)SSPOPPTR; |
790 | ptr = av_fetch(av,i,1); |
4e4c362e |
791 | if (ptr) { |
792 | sv = *(SV**)ptr; |
3280af22 |
793 | if (sv && sv != &PL_sv_undef) { |
4e4c362e |
794 | if (SvRMAGICAL(av) && mg_find((SV*)av, 'P')) |
795 | (void)SvREFCNT_inc(sv); |
796 | SvREFCNT_dec(av); |
797 | goto restore_sv; |
798 | } |
799 | } |
800 | SvREFCNT_dec(av); |
801 | SvREFCNT_dec(value); |
802 | break; |
161b7d16 |
803 | case SAVEt_HELEM: /* hash element */ |
804 | value = (SV*)SSPOPPTR; |
9002cb76 |
805 | sv = (SV*)SSPOPPTR; |
161b7d16 |
806 | hv = (HV*)SSPOPPTR; |
807 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
808 | if (ptr) { |
809 | SV *oval = HeVAL((HE*)ptr); |
3280af22 |
810 | if (oval && oval != &PL_sv_undef) { |
4e4c362e |
811 | ptr = &HeVAL((HE*)ptr); |
812 | if (SvRMAGICAL(hv) && mg_find((SV*)hv, 'P')) |
813 | (void)SvREFCNT_inc(*(SV**)ptr); |
814 | SvREFCNT_dec(hv); |
815 | SvREFCNT_dec(sv); |
816 | goto restore_sv; |
817 | } |
818 | } |
819 | SvREFCNT_dec(hv); |
820 | SvREFCNT_dec(sv); |
821 | SvREFCNT_dec(value); |
822 | break; |
462e5cf6 |
823 | case SAVEt_OP: |
533c011a |
824 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 |
825 | break; |
25eaa213 |
826 | case SAVEt_HINTS: |
3280af22 |
827 | if (GvHV(PL_hintgv)) { |
828 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
829 | GvHV(PL_hintgv) = NULL; |
b3ac6de7 |
830 | } |
3280af22 |
831 | *(I32*)&PL_hints = (I32)SSPOPINT; |
b3ac6de7 |
832 | break; |
79072805 |
833 | default: |
463ee0b2 |
834 | croak("panic: leave_scope inconsistency"); |
79072805 |
835 | } |
836 | } |
837 | } |
8990e307 |
838 | |
8990e307 |
839 | void |
c09156bb |
840 | cx_dump(PERL_CONTEXT *cx) |
8990e307 |
841 | { |
35ff7856 |
842 | #ifdef DEBUGGING |
11343788 |
843 | dTHR; |
6b35e009 |
844 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), block_type[CxTYPE(cx)]); |
845 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 |
846 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
847 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop); |
848 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
849 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
850 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); |
851 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm); |
852 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
853 | } |
6b35e009 |
854 | switch (CxTYPE(cx)) { |
8990e307 |
855 | case CXt_NULL: |
856 | case CXt_BLOCK: |
857 | break; |
858 | case CXt_SUB: |
760ac839 |
859 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n", |
8990e307 |
860 | (long)cx->blk_sub.cv); |
760ac839 |
861 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n", |
8990e307 |
862 | (long)cx->blk_sub.gv); |
760ac839 |
863 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n", |
8990e307 |
864 | (long)cx->blk_sub.dfoutgv); |
760ac839 |
865 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
866 | (long)cx->blk_sub.olddepth); |
760ac839 |
867 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
868 | (int)cx->blk_sub.hasargs); |
869 | break; |
870 | case CXt_EVAL: |
760ac839 |
871 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
872 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
873 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
c07a80fd |
874 | op_name[cx->blk_eval.old_op_type], |
875 | op_desc[cx->blk_eval.old_op_type]); |
760ac839 |
876 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
8990e307 |
877 | cx->blk_eval.old_name); |
760ac839 |
878 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n", |
8990e307 |
879 | (long)cx->blk_eval.old_eval_root); |
880 | break; |
881 | |
882 | case CXt_LOOP: |
760ac839 |
883 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
884 | cx->blk_loop.label); |
760ac839 |
885 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
886 | (long)cx->blk_loop.resetsp); |
760ac839 |
887 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n", |
8990e307 |
888 | (long)cx->blk_loop.redo_op); |
760ac839 |
889 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n", |
8990e307 |
890 | (long)cx->blk_loop.next_op); |
760ac839 |
891 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n", |
8990e307 |
892 | (long)cx->blk_loop.last_op); |
760ac839 |
893 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
894 | (long)cx->blk_loop.iterix); |
760ac839 |
895 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n", |
8990e307 |
896 | (long)cx->blk_loop.iterary); |
760ac839 |
897 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n", |
8990e307 |
898 | (long)cx->blk_loop.itervar); |
899 | if (cx->blk_loop.itervar) |
760ac839 |
900 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n", |
8990e307 |
901 | (long)cx->blk_loop.itersave); |
7a4c00b4 |
902 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n", |
903 | (long)cx->blk_loop.iterlval); |
8990e307 |
904 | break; |
905 | |
906 | case CXt_SUBST: |
760ac839 |
907 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
908 | (long)cx->sb_iters); |
760ac839 |
909 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
910 | (long)cx->sb_maxiters); |
760ac839 |
911 | PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n", |
8990e307 |
912 | (long)cx->sb_safebase); |
760ac839 |
913 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
914 | (long)cx->sb_once); |
760ac839 |
915 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
916 | cx->sb_orig); |
760ac839 |
917 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n", |
8990e307 |
918 | (long)cx->sb_dstr); |
760ac839 |
919 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n", |
8990e307 |
920 | (long)cx->sb_targ); |
760ac839 |
921 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n", |
8990e307 |
922 | (long)cx->sb_s); |
760ac839 |
923 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n", |
8990e307 |
924 | (long)cx->sb_m); |
760ac839 |
925 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n", |
8990e307 |
926 | (long)cx->sb_strend); |
c90c0ff4 |
927 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%lx\n", |
928 | (long)cx->sb_rxres); |
8990e307 |
929 | break; |
930 | } |
17c3b450 |
931 | #endif /* DEBUGGING */ |
35ff7856 |
932 | } |