Commit | Line | Data |
a0d0e21e |
1 | /* scope.c |
79072805 |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b |
4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. |
8 | * |
a0d0e21e |
9 | */ |
10 | |
11 | /* |
12 | * "For the fashion of Minas Tirith was such that it was built on seven |
13 | * levels..." |
79072805 |
14 | */ |
15 | |
ddfa107c |
16 | /* This file contains functions to manipulate several of Perl's stacks; |
166f8a29 |
17 | * in particular it contains code to push various types of things onto |
18 | * the savestack, then to pop them off and perform the correct restorative |
19 | * action for each one. This corresponds to the cleanup Perl does at |
20 | * each scope exit. |
21 | */ |
22 | |
79072805 |
23 | #include "EXTERN.h" |
864dbfa3 |
24 | #define PERL_IN_SCOPE_C |
79072805 |
25 | #include "perl.h" |
26 | |
a0d0e21e |
27 | SV** |
864dbfa3 |
28 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
a0d0e21e |
29 | { |
3280af22 |
30 | PL_stack_sp = sp; |
2ce36478 |
31 | #ifndef STRESS_REALLOC |
3280af22 |
32 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
2ce36478 |
33 | #else |
6b88bc9c |
34 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
2ce36478 |
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 * |
864dbfa3 |
46 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d |
47 | { |
48 | PERL_SI *si; |
e336de0d |
49 | New(56, si, 1, PERL_SI); |
50 | si->si_stack = newAV(); |
51 | AvREAL_off(si->si_stack); |
52 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); |
3280af22 |
53 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d |
54 | AvFILLp(si->si_stack) = 0; |
55 | si->si_prev = 0; |
56 | si->si_next = 0; |
57 | si->si_cxmax = cxitems - 1; |
58 | si->si_cxix = -1; |
e788e7d3 |
59 | si->si_type = PERLSI_UNDEF; |
9965345d |
60 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
61 | /* Without any kind of initialising PUSHSUBST() |
62 | * in pp_subst() will read uninitialised heap. */ |
63 | Poison(si->si_cxstack, cxitems, PERL_CONTEXT); |
e336de0d |
64 | return si; |
65 | } |
66 | |
79072805 |
67 | I32 |
864dbfa3 |
68 | Perl_cxinc(pTHX) |
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69 | { |
a3b680e6 |
70 | const IV old_max = cxstack_max; |
2ce36478 |
71 | cxstack_max = GROW(cxstack_max); |
c09156bb |
72 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
9965345d |
73 | /* Without any kind of initialising deep enough recursion |
74 | * will end up reading uninitialised PERL_CONTEXTs. */ |
75 | Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); |
79072805 |
76 | return cxstack_ix + 1; |
77 | } |
78 | |
79072805 |
79 | void |
864dbfa3 |
80 | Perl_push_scope(pTHX) |
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81 | { |
3280af22 |
82 | if (PL_scopestack_ix == PL_scopestack_max) { |
83 | PL_scopestack_max = GROW(PL_scopestack_max); |
84 | Renew(PL_scopestack, PL_scopestack_max, I32); |
79072805 |
85 | } |
3280af22 |
86 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 |
87 | |
88 | } |
89 | |
90 | void |
864dbfa3 |
91 | Perl_pop_scope(pTHX) |
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92 | { |
35a4481c |
93 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 |
94 | LEAVE_SCOPE(oldsave); |
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95 | } |
96 | |
97 | void |
864dbfa3 |
98 | Perl_markstack_grow(pTHX) |
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99 | { |
35a4481c |
100 | const I32 oldmax = PL_markstack_max - PL_markstack; |
101 | const I32 newmax = GROW(oldmax); |
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102 | |
3280af22 |
103 | Renew(PL_markstack, newmax, I32); |
104 | PL_markstack_ptr = PL_markstack + oldmax; |
105 | PL_markstack_max = PL_markstack + newmax; |
a0d0e21e |
106 | } |
107 | |
108 | void |
864dbfa3 |
109 | Perl_savestack_grow(pTHX) |
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110 | { |
8aacddc1 |
111 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
3280af22 |
112 | Renew(PL_savestack, PL_savestack_max, ANY); |
79072805 |
113 | } |
114 | |
4b3c1a47 |
115 | void |
116 | Perl_savestack_grow_cnt(pTHX_ I32 need) |
117 | { |
118 | PL_savestack_max = PL_savestack_ix + need; |
119 | Renew(PL_savestack, PL_savestack_max, ANY); |
120 | } |
121 | |
2ce36478 |
122 | #undef GROW |
123 | |
79072805 |
124 | void |
864dbfa3 |
125 | Perl_tmps_grow(pTHX_ I32 n) |
677b06e3 |
126 | { |
677b06e3 |
127 | #ifndef STRESS_REALLOC |
128 | if (n < 128) |
129 | n = (PL_tmps_max < 512) ? 128 : 512; |
130 | #endif |
131 | PL_tmps_max = PL_tmps_ix + n + 1; |
132 | Renew(PL_tmps_stack, PL_tmps_max, SV*); |
133 | } |
134 | |
135 | |
136 | void |
864dbfa3 |
137 | Perl_free_tmps(pTHX) |
79072805 |
138 | { |
139 | /* XXX should tmps_floor live in cxstack? */ |
35a4481c |
140 | const I32 myfloor = PL_tmps_floor; |
3280af22 |
141 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
901017d6 |
142 | SV* const sv = PL_tmps_stack[PL_tmps_ix]; |
3280af22 |
143 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; |
8aacddc1 |
144 | if (sv && sv != &PL_sv_undef) { |
463ee0b2 |
145 | SvTEMP_off(sv); |
8990e307 |
146 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 |
147 | } |
79072805 |
148 | } |
149 | } |
150 | |
76e3520e |
151 | STATIC SV * |
cea2e8a9 |
152 | S_save_scalar_at(pTHX_ SV **sptr) |
79072805 |
153 | { |
901017d6 |
154 | SV * const osv = *sptr; |
155 | register SV * const sv = *sptr = NEWSV(0,0); |
79072805 |
156 | |
a0d0e21e |
157 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
ac117f44 |
158 | MAGIC *mg; |
79072805 |
159 | sv_upgrade(sv, SvTYPE(osv)); |
a0d0e21e |
160 | if (SvGMAGICAL(osv)) { |
35a4481c |
161 | const bool oldtainted = PL_tainted; |
5cfc7842 |
162 | mg_get(osv); /* note, can croak! */ |
14befaf4 |
163 | if (PL_tainting && PL_tainted && |
164 | (mg = mg_find(osv, PERL_MAGIC_taint))) { |
748a9306 |
165 | SAVESPTR(mg->mg_obj); |
166 | mg->mg_obj = osv; |
167 | } |
a0d0e21e |
168 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
8aacddc1 |
169 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
3280af22 |
170 | PL_tainted = oldtainted; |
a0d0e21e |
171 | } |
b162af07 |
172 | SvMAGIC_set(sv, SvMAGIC(osv)); |
ac117f44 |
173 | /* if it's a special scalar or if it has no 'set' magic, |
174 | * propagate the SvREADONLY flag. --rgs 20030922 */ |
175 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
dda0e828 |
176 | if (mg->mg_type == '\0' |
177 | || !(mg->mg_virtual && mg->mg_virtual->svt_set)) |
ac117f44 |
178 | { |
179 | SvFLAGS(sv) |= SvREADONLY(osv); |
180 | break; |
181 | } |
182 | } |
183 | SvFLAGS(sv) |= SvMAGICAL(osv); |
2d5e9e5d |
184 | /* XXX SvMAGIC() is *shared* between osv and sv. This can |
185 | * lead to coredumps when both SVs are destroyed without one |
186 | * of their SvMAGIC() slots being NULLed. */ |
3280af22 |
187 | PL_localizing = 1; |
79072805 |
188 | SvSETMAGIC(sv); |
3280af22 |
189 | PL_localizing = 0; |
79072805 |
190 | } |
191 | return sv; |
192 | } |
193 | |
7a4c00b4 |
194 | SV * |
864dbfa3 |
195 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 |
196 | { |
4e4c362e |
197 | SV **sptr = &GvSV(gv); |
7a4c00b4 |
198 | SSCHECK(3); |
4e4c362e |
199 | SSPUSHPTR(SvREFCNT_inc(gv)); |
200 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
201 | SSPUSHINT(SAVEt_SV); |
4e4c362e |
202 | return save_scalar_at(sptr); |
7a4c00b4 |
203 | } |
204 | |
205 | SV* |
864dbfa3 |
206 | Perl_save_svref(pTHX_ SV **sptr) |
7a4c00b4 |
207 | { |
208 | SSCHECK(3); |
209 | SSPUSHPTR(sptr); |
4e4c362e |
210 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
7a4c00b4 |
211 | SSPUSHINT(SAVEt_SVREF); |
212 | return save_scalar_at(sptr); |
213 | } |
214 | |
f4dd75d9 |
215 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 |
216 | * restore a global SV to its prior contents, freeing new value. */ |
217 | void |
864dbfa3 |
218 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 |
219 | { |
b9d12d37 |
220 | SSCHECK(3); |
221 | SSPUSHPTR(sptr); |
222 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
223 | SSPUSHINT(SAVEt_GENERIC_SVREF); |
224 | } |
225 | |
f4dd75d9 |
226 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
227 | * from the old one. Can be used to restore a global char* to its prior |
228 | * contents, freeing new value. */ |
229 | void |
230 | Perl_save_generic_pvref(pTHX_ char **str) |
231 | { |
f4dd75d9 |
232 | SSCHECK(3); |
233 | SSPUSHPTR(str); |
234 | SSPUSHPTR(*str); |
235 | SSPUSHINT(SAVEt_GENERIC_PVREF); |
236 | } |
237 | |
05ec9bb3 |
238 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
239 | * Can be used to restore a shared global char* to its prior |
240 | * contents, freeing new value. */ |
241 | void |
242 | Perl_save_shared_pvref(pTHX_ char **str) |
243 | { |
244 | SSCHECK(3); |
245 | SSPUSHPTR(str); |
246 | SSPUSHPTR(*str); |
247 | SSPUSHINT(SAVEt_SHARED_PVREF); |
248 | } |
249 | |
14f338dc |
250 | /* set the SvFLAGS specified by mask to the values in val */ |
251 | |
252 | void |
253 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) |
254 | { |
255 | SSCHECK(4); |
256 | SSPUSHPTR(sv); |
257 | SSPUSHINT(mask); |
258 | SSPUSHINT(val); |
259 | SSPUSHINT(SAVEt_SET_SVFLAGS); |
260 | } |
261 | |
79072805 |
262 | void |
864dbfa3 |
263 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 |
264 | { |
4b3c1a47 |
265 | SSGROW(6); |
fb73857a |
266 | SSPUSHIV((IV)SvLEN(gv)); |
b162af07 |
267 | SvLEN_set(gv, 0); /* forget that anything was allocated here */ |
fb73857a |
268 | SSPUSHIV((IV)SvCUR(gv)); |
aa07b2f6 |
269 | SSPUSHPTR(SvPVX_const(gv)); |
fb73857a |
270 | SvPOK_off(gv); |
4633a7c4 |
271 | SSPUSHPTR(SvREFCNT_inc(gv)); |
5f05dabc |
272 | SSPUSHPTR(GvGP(gv)); |
79072805 |
273 | SSPUSHINT(SAVEt_GP); |
274 | |
5f05dabc |
275 | if (empty) { |
276 | register GP *gp; |
fae75791 |
277 | |
146174a9 |
278 | Newz(602, gp, 1, GP); |
279 | |
fae75791 |
280 | if (GvCVu(gv)) |
3280af22 |
281 | PL_sub_generation++; /* taking a method out of circulation */ |
146174a9 |
282 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
283 | gp->gp_io = newIO(); |
284 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; |
285 | } |
44a8e56a |
286 | GvGP(gv) = gp_ref(gp); |
5f05dabc |
287 | GvSV(gv) = NEWSV(72,0); |
146174a9 |
288 | GvLINE(gv) = CopLINE(PL_curcop); |
07409e01 |
289 | /* XXX Ideally this cast would be replaced with a change to const char* |
290 | in the struct. */ |
291 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : (char *) ""; |
5f05dabc |
292 | GvEGV(gv) = gv; |
293 | } |
294 | else { |
44a8e56a |
295 | gp_ref(GvGP(gv)); |
5f05dabc |
296 | GvINTRO_on(gv); |
297 | } |
79072805 |
298 | } |
79072805 |
299 | |
79072805 |
300 | AV * |
864dbfa3 |
301 | Perl_save_ary(pTHX_ GV *gv) |
79072805 |
302 | { |
901017d6 |
303 | AV * const oav = GvAVn(gv); |
67a38de0 |
304 | AV *av; |
fb73857a |
305 | |
67a38de0 |
306 | if (!AvREAL(oav) && AvREIFY(oav)) |
307 | av_reify(oav); |
79072805 |
308 | SSCHECK(3); |
309 | SSPUSHPTR(gv); |
67a38de0 |
310 | SSPUSHPTR(oav); |
79072805 |
311 | SSPUSHINT(SAVEt_AV); |
312 | |
313 | GvAV(gv) = Null(AV*); |
fb73857a |
314 | av = GvAVn(gv); |
315 | if (SvMAGIC(oav)) { |
b162af07 |
316 | SvMAGIC_set(av, SvMAGIC(oav)); |
32da55ab |
317 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
fb73857a |
318 | SvMAGICAL_off(oav); |
b162af07 |
319 | SvMAGIC_set(oav, NULL); |
3280af22 |
320 | PL_localizing = 1; |
fb73857a |
321 | SvSETMAGIC((SV*)av); |
3280af22 |
322 | PL_localizing = 0; |
fb73857a |
323 | } |
324 | return av; |
79072805 |
325 | } |
326 | |
327 | HV * |
864dbfa3 |
328 | Perl_save_hash(pTHX_ GV *gv) |
79072805 |
329 | { |
fb73857a |
330 | HV *ohv, *hv; |
331 | |
79072805 |
332 | SSCHECK(3); |
333 | SSPUSHPTR(gv); |
fb73857a |
334 | SSPUSHPTR(ohv = GvHVn(gv)); |
79072805 |
335 | SSPUSHINT(SAVEt_HV); |
336 | |
337 | GvHV(gv) = Null(HV*); |
fb73857a |
338 | hv = GvHVn(gv); |
339 | if (SvMAGIC(ohv)) { |
b162af07 |
340 | SvMAGIC_set(hv, SvMAGIC(ohv)); |
32da55ab |
341 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
fb73857a |
342 | SvMAGICAL_off(ohv); |
b162af07 |
343 | SvMAGIC_set(ohv, NULL); |
3280af22 |
344 | PL_localizing = 1; |
fb73857a |
345 | SvSETMAGIC((SV*)hv); |
3280af22 |
346 | PL_localizing = 0; |
fb73857a |
347 | } |
348 | return hv; |
79072805 |
349 | } |
350 | |
351 | void |
864dbfa3 |
352 | Perl_save_item(pTHX_ register SV *item) |
79072805 |
353 | { |
901017d6 |
354 | register SV * const sv = newSVsv(item); |
79072805 |
355 | |
356 | SSCHECK(3); |
357 | SSPUSHPTR(item); /* remember the pointer */ |
79072805 |
358 | SSPUSHPTR(sv); /* remember the value */ |
359 | SSPUSHINT(SAVEt_ITEM); |
360 | } |
361 | |
362 | void |
864dbfa3 |
363 | Perl_save_int(pTHX_ int *intp) |
79072805 |
364 | { |
365 | SSCHECK(3); |
366 | SSPUSHINT(*intp); |
367 | SSPUSHPTR(intp); |
368 | SSPUSHINT(SAVEt_INT); |
369 | } |
370 | |
371 | void |
864dbfa3 |
372 | Perl_save_long(pTHX_ long int *longp) |
85e6fe83 |
373 | { |
374 | SSCHECK(3); |
375 | SSPUSHLONG(*longp); |
376 | SSPUSHPTR(longp); |
377 | SSPUSHINT(SAVEt_LONG); |
378 | } |
379 | |
380 | void |
9febdf04 |
381 | Perl_save_bool(pTHX_ bool *boolp) |
382 | { |
383 | SSCHECK(3); |
384 | SSPUSHBOOL(*boolp); |
385 | SSPUSHPTR(boolp); |
386 | SSPUSHINT(SAVEt_BOOL); |
387 | } |
388 | |
389 | void |
864dbfa3 |
390 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 |
391 | { |
392 | SSCHECK(3); |
393 | SSPUSHINT(*intp); |
394 | SSPUSHPTR(intp); |
395 | SSPUSHINT(SAVEt_I32); |
396 | } |
397 | |
a0d0e21e |
398 | void |
864dbfa3 |
399 | Perl_save_I16(pTHX_ I16 *intp) |
55497cff |
400 | { |
401 | SSCHECK(3); |
402 | SSPUSHINT(*intp); |
403 | SSPUSHPTR(intp); |
404 | SSPUSHINT(SAVEt_I16); |
405 | } |
406 | |
407 | void |
146174a9 |
408 | Perl_save_I8(pTHX_ I8 *bytep) |
409 | { |
146174a9 |
410 | SSCHECK(3); |
411 | SSPUSHINT(*bytep); |
412 | SSPUSHPTR(bytep); |
413 | SSPUSHINT(SAVEt_I8); |
414 | } |
415 | |
416 | void |
864dbfa3 |
417 | Perl_save_iv(pTHX_ IV *ivp) |
a0d0e21e |
418 | { |
419 | SSCHECK(3); |
4aa0a1f7 |
420 | SSPUSHIV(*ivp); |
a0d0e21e |
421 | SSPUSHPTR(ivp); |
422 | SSPUSHINT(SAVEt_IV); |
423 | } |
424 | |
85e6fe83 |
425 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
426 | * force word-alignment and we'll miss the pointer. |
427 | */ |
428 | void |
864dbfa3 |
429 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 |
430 | { |
431 | SSCHECK(3); |
432 | SSPUSHPTR(*pptr); |
433 | SSPUSHPTR(pptr); |
434 | SSPUSHINT(SAVEt_PPTR); |
435 | } |
436 | |
79072805 |
437 | void |
146174a9 |
438 | Perl_save_vptr(pTHX_ void *ptr) |
439 | { |
146174a9 |
440 | SSCHECK(3); |
441 | SSPUSHPTR(*(char**)ptr); |
442 | SSPUSHPTR(ptr); |
443 | SSPUSHINT(SAVEt_VPTR); |
444 | } |
445 | |
446 | void |
864dbfa3 |
447 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 |
448 | { |
449 | SSCHECK(3); |
450 | SSPUSHPTR(*sptr); |
451 | SSPUSHPTR(sptr); |
452 | SSPUSHINT(SAVEt_SPTR); |
453 | } |
454 | |
c3564e5c |
455 | void |
456 | Perl_save_padsv(pTHX_ PADOFFSET off) |
457 | { |
c3564e5c |
458 | SSCHECK(4); |
f3548bdc |
459 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
c3564e5c |
460 | SSPUSHPTR(PL_curpad[off]); |
f3548bdc |
461 | SSPUSHPTR(PL_comppad); |
c3564e5c |
462 | SSPUSHLONG((long)off); |
463 | SSPUSHINT(SAVEt_PADSV); |
464 | } |
465 | |
54b9620d |
466 | SV ** |
864dbfa3 |
467 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
54b9620d |
468 | { |
cea2e8a9 |
469 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
73d840c0 |
470 | (void)i; |
0dbb1585 |
471 | NORETURN_FUNCTION_END; |
54b9620d |
472 | } |
473 | |
79072805 |
474 | void |
864dbfa3 |
475 | Perl_save_nogv(pTHX_ GV *gv) |
79072805 |
476 | { |
477 | SSCHECK(2); |
478 | SSPUSHPTR(gv); |
479 | SSPUSHINT(SAVEt_NSTAB); |
480 | } |
481 | |
482 | void |
864dbfa3 |
483 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 |
484 | { |
485 | SSCHECK(3); |
85e6fe83 |
486 | SSPUSHPTR(*hptr); |
79072805 |
487 | SSPUSHPTR(hptr); |
488 | SSPUSHINT(SAVEt_HPTR); |
489 | } |
490 | |
491 | void |
864dbfa3 |
492 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 |
493 | { |
494 | SSCHECK(3); |
85e6fe83 |
495 | SSPUSHPTR(*aptr); |
79072805 |
496 | SSPUSHPTR(aptr); |
497 | SSPUSHINT(SAVEt_APTR); |
498 | } |
499 | |
500 | void |
864dbfa3 |
501 | Perl_save_freesv(pTHX_ SV *sv) |
8990e307 |
502 | { |
503 | SSCHECK(2); |
504 | SSPUSHPTR(sv); |
505 | SSPUSHINT(SAVEt_FREESV); |
506 | } |
507 | |
508 | void |
26d9b02f |
509 | Perl_save_mortalizesv(pTHX_ SV *sv) |
510 | { |
511 | SSCHECK(2); |
512 | SSPUSHPTR(sv); |
513 | SSPUSHINT(SAVEt_MORTALIZESV); |
514 | } |
515 | |
516 | void |
864dbfa3 |
517 | Perl_save_freeop(pTHX_ OP *o) |
8990e307 |
518 | { |
519 | SSCHECK(2); |
11343788 |
520 | SSPUSHPTR(o); |
8990e307 |
521 | SSPUSHINT(SAVEt_FREEOP); |
522 | } |
523 | |
524 | void |
864dbfa3 |
525 | Perl_save_freepv(pTHX_ char *pv) |
8990e307 |
526 | { |
527 | SSCHECK(2); |
528 | SSPUSHPTR(pv); |
529 | SSPUSHINT(SAVEt_FREEPV); |
530 | } |
531 | |
532 | void |
864dbfa3 |
533 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 |
534 | { |
f3548bdc |
535 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
8990e307 |
536 | SSCHECK(2); |
3280af22 |
537 | SSPUSHLONG((long)(svp-PL_curpad)); |
8990e307 |
538 | SSPUSHINT(SAVEt_CLEARSV); |
d9d18af6 |
539 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
8990e307 |
540 | } |
541 | |
542 | void |
864dbfa3 |
543 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 |
544 | { |
545 | SSCHECK(4); |
546 | SSPUSHINT(klen); |
547 | SSPUSHPTR(key); |
4e4c362e |
548 | SSPUSHPTR(SvREFCNT_inc(hv)); |
8990e307 |
549 | SSPUSHINT(SAVEt_DELETE); |
550 | } |
551 | |
552 | void |
864dbfa3 |
553 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
79072805 |
554 | { |
79072805 |
555 | register I32 i; |
556 | |
79072805 |
557 | for (i = 1; i <= maxsarg; i++) { |
901017d6 |
558 | register SV * const sv = NEWSV(0,0); |
79072805 |
559 | sv_setsv(sv,sarg[i]); |
f46d017c |
560 | SSCHECK(3); |
561 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
79072805 |
562 | SSPUSHPTR(sv); /* remember the value */ |
563 | SSPUSHINT(SAVEt_ITEM); |
564 | } |
565 | } |
566 | |
567 | void |
146174a9 |
568 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
a0d0e21e |
569 | { |
570 | SSCHECK(3); |
571 | SSPUSHDPTR(f); |
572 | SSPUSHPTR(p); |
573 | SSPUSHINT(SAVEt_DESTRUCTOR); |
574 | } |
575 | |
576 | void |
146174a9 |
577 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
578 | { |
146174a9 |
579 | SSCHECK(3); |
580 | SSPUSHDXPTR(f); |
581 | SSPUSHPTR(p); |
582 | SSPUSHINT(SAVEt_DESTRUCTOR_X); |
583 | } |
584 | |
585 | void |
35a4481c |
586 | Perl_save_aelem(pTHX_ const AV *av, I32 idx, SV **sptr) |
4e4c362e |
587 | { |
bfc4de9f |
588 | SV *sv; |
4e4c362e |
589 | SSCHECK(4); |
590 | SSPUSHPTR(SvREFCNT_inc(av)); |
591 | SSPUSHINT(idx); |
592 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
593 | SSPUSHINT(SAVEt_AELEM); |
5dd42e15 |
594 | /* if it gets reified later, the restore will have the wrong refcnt */ |
595 | if (!AvREAL(av) && AvREIFY(av)) |
7fc63493 |
596 | (void)SvREFCNT_inc(*sptr); |
4e4c362e |
597 | save_scalar_at(sptr); |
bfc4de9f |
598 | sv = *sptr; |
599 | /* If we're localizing a tied array element, this new sv |
600 | * won't actually be stored in the array - so it won't get |
601 | * reaped when the localize ends. Ensure it gets reaped by |
602 | * mortifying it instead. DAPM */ |
603 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
604 | sv_2mortal(sv); |
4e4c362e |
605 | } |
606 | |
607 | void |
e1ec3a88 |
608 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
4e4c362e |
609 | { |
bfc4de9f |
610 | SV *sv; |
4e4c362e |
611 | SSCHECK(4); |
612 | SSPUSHPTR(SvREFCNT_inc(hv)); |
613 | SSPUSHPTR(SvREFCNT_inc(key)); |
614 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
615 | SSPUSHINT(SAVEt_HELEM); |
616 | save_scalar_at(sptr); |
bfc4de9f |
617 | sv = *sptr; |
618 | /* If we're localizing a tied hash element, this new sv |
619 | * won't actually be stored in the hash - so it won't get |
620 | * reaped when the localize ends. Ensure it gets reaped by |
621 | * mortifying it instead. DAPM */ |
622 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
623 | sv_2mortal(sv); |
4e4c362e |
624 | } |
625 | |
626 | void |
864dbfa3 |
627 | Perl_save_op(pTHX) |
462e5cf6 |
628 | { |
462e5cf6 |
629 | SSCHECK(2); |
533c011a |
630 | SSPUSHPTR(PL_op); |
462e5cf6 |
631 | SSPUSHINT(SAVEt_OP); |
632 | } |
633 | |
455ece5e |
634 | I32 |
864dbfa3 |
635 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e |
636 | { |
35a4481c |
637 | register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
8aacddc1 |
638 | - (char*)PL_savestack); |
35a4481c |
639 | register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
455ece5e |
640 | |
641 | /* SSCHECK may not be good enough */ |
642 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
8aacddc1 |
643 | savestack_grow(); |
455ece5e |
644 | |
645 | PL_savestack_ix += elems; |
646 | SSPUSHINT(elems); |
647 | SSPUSHINT(SAVEt_ALLOC); |
648 | return start; |
649 | } |
650 | |
462e5cf6 |
651 | void |
864dbfa3 |
652 | Perl_leave_scope(pTHX_ I32 base) |
79072805 |
653 | { |
654 | register SV *sv; |
655 | register SV *value; |
656 | register GV *gv; |
657 | register AV *av; |
658 | register HV *hv; |
659 | register void* ptr; |
f4dd75d9 |
660 | register char* str; |
161b7d16 |
661 | I32 i; |
79072805 |
662 | |
663 | if (base < -1) |
cea2e8a9 |
664 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
3280af22 |
665 | while (PL_savestack_ix > base) { |
79072805 |
666 | switch (SSPOPINT) { |
667 | case SAVEt_ITEM: /* normal string */ |
668 | value = (SV*)SSPOPPTR; |
669 | sv = (SV*)SSPOPPTR; |
670 | sv_replace(sv,value); |
3280af22 |
671 | PL_localizing = 2; |
79072805 |
672 | SvSETMAGIC(sv); |
3280af22 |
673 | PL_localizing = 0; |
79072805 |
674 | break; |
8aacddc1 |
675 | case SAVEt_SV: /* scalar reference */ |
79072805 |
676 | value = (SV*)SSPOPPTR; |
677 | gv = (GV*)SSPOPPTR; |
7a4c00b4 |
678 | ptr = &GvSV(gv); |
5dd42e15 |
679 | av = (AV*)gv; /* what to refcnt_dec */ |
7a4c00b4 |
680 | goto restore_sv; |
8aacddc1 |
681 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
f4dd75d9 |
682 | str = (char*)SSPOPPTR; |
683 | ptr = SSPOPPTR; |
684 | if (*(char**)ptr != str) { |
685 | Safefree(*(char**)ptr); |
686 | *(char**)ptr = str; |
687 | } |
688 | break; |
05ec9bb3 |
689 | case SAVEt_SHARED_PVREF: /* shared pv */ |
690 | str = (char*)SSPOPPTR; |
691 | ptr = SSPOPPTR; |
692 | if (*(char**)ptr != str) { |
5e54c26f |
693 | #ifdef NETWARE |
9ecbcc42 |
694 | PerlMem_free(*(char**)ptr); |
5e54c26f |
695 | #else |
05ec9bb3 |
696 | PerlMemShared_free(*(char**)ptr); |
5e54c26f |
697 | #endif |
05ec9bb3 |
698 | *(char**)ptr = str; |
699 | } |
700 | break; |
8aacddc1 |
701 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
b9d12d37 |
702 | value = (SV*)SSPOPPTR; |
703 | ptr = SSPOPPTR; |
f4dd75d9 |
704 | sv = *(SV**)ptr; |
705 | *(SV**)ptr = value; |
706 | SvREFCNT_dec(sv); |
b9d12d37 |
707 | SvREFCNT_dec(value); |
708 | break; |
8aacddc1 |
709 | case SAVEt_SVREF: /* scalar reference */ |
7a4c00b4 |
710 | value = (SV*)SSPOPPTR; |
79072805 |
711 | ptr = SSPOPPTR; |
5dd42e15 |
712 | av = Nullav; /* what to refcnt_dec */ |
7a4c00b4 |
713 | restore_sv: |
79072805 |
714 | sv = *(SV**)ptr; |
146174a9 |
715 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
54b9620d |
716 | "restore svref: %p %p:%s -> %p:%s\n", |
8aacddc1 |
717 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
cdec4f49 |
718 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
719 | SvTYPE(sv) != SVt_PVGV) |
720 | { |
862a34c6 |
721 | SvUPGRADE(value, SvTYPE(sv)); |
b162af07 |
722 | SvMAGIC_set(value, SvMAGIC(sv)); |
a0d0e21e |
723 | SvFLAGS(value) |= SvMAGICAL(sv); |
724 | SvMAGICAL_off(sv); |
b162af07 |
725 | SvMAGIC_set(sv, 0); |
a0d0e21e |
726 | } |
2d5e9e5d |
727 | /* XXX This branch is pretty bogus. This code irretrievably |
728 | * clears(!) the magic on the SV (either to avoid further |
729 | * croaking that might ensue when the SvSETMAGIC() below is |
730 | * called, or to avoid two different SVs pointing at the same |
731 | * SvMAGIC()). This needs a total rethink. --GSAR */ |
cdec4f49 |
732 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
733 | SvTYPE(value) != SVt_PVGV) |
734 | { |
7a4c00b4 |
735 | SvFLAGS(value) |= (SvFLAGS(value) & |
8aacddc1 |
736 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
7a4c00b4 |
737 | SvMAGICAL_off(value); |
2d5e9e5d |
738 | /* XXX this is a leak when we get here because the |
739 | * mg_get() in save_scalar_at() croaked */ |
b162af07 |
740 | SvMAGIC_set(value, NULL); |
7a4c00b4 |
741 | } |
a0d0e21e |
742 | *(SV**)ptr = value; |
db733481 |
743 | SvREFCNT_dec(sv); |
3280af22 |
744 | PL_localizing = 2; |
a0d0e21e |
745 | SvSETMAGIC(value); |
3280af22 |
746 | PL_localizing = 0; |
4e4c362e |
747 | SvREFCNT_dec(value); |
5dd42e15 |
748 | if (av) /* actually an av, hv or gv */ |
749 | SvREFCNT_dec(av); |
8aacddc1 |
750 | break; |
751 | case SAVEt_AV: /* array reference */ |
79072805 |
752 | av = (AV*)SSPOPPTR; |
753 | gv = (GV*)SSPOPPTR; |
fb73857a |
754 | if (GvAV(gv)) { |
35a4481c |
755 | AV * const goner = GvAV(gv); |
404a4710 |
756 | /* FIXME - this is a temporary hack until we work out what |
757 | the correct behaviour for magic should be. */ |
758 | sv_unmagic((SV*)goner, PERL_MAGIC_arylen_p); |
b162af07 |
759 | SvMAGIC_set(av, SvMAGIC(goner)); |
32da55ab |
760 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
fb73857a |
761 | SvMAGICAL_off(goner); |
b162af07 |
762 | SvMAGIC_set(goner, NULL); |
fb73857a |
763 | SvREFCNT_dec(goner); |
764 | } |
8aacddc1 |
765 | GvAV(gv) = av; |
fb73857a |
766 | if (SvMAGICAL(av)) { |
3280af22 |
767 | PL_localizing = 2; |
fb73857a |
768 | SvSETMAGIC((SV*)av); |
3280af22 |
769 | PL_localizing = 0; |
fb73857a |
770 | } |
8aacddc1 |
771 | break; |
772 | case SAVEt_HV: /* hash reference */ |
79072805 |
773 | hv = (HV*)SSPOPPTR; |
774 | gv = (GV*)SSPOPPTR; |
fb73857a |
775 | if (GvHV(gv)) { |
35a4481c |
776 | HV * const goner = GvHV(gv); |
b162af07 |
777 | SvMAGIC_set(hv, SvMAGIC(goner)); |
fb73857a |
778 | SvFLAGS(hv) |= SvMAGICAL(goner); |
779 | SvMAGICAL_off(goner); |
b162af07 |
780 | SvMAGIC_set(goner, NULL); |
fb73857a |
781 | SvREFCNT_dec(goner); |
782 | } |
8aacddc1 |
783 | GvHV(gv) = hv; |
fb73857a |
784 | if (SvMAGICAL(hv)) { |
3280af22 |
785 | PL_localizing = 2; |
fb73857a |
786 | SvSETMAGIC((SV*)hv); |
3280af22 |
787 | PL_localizing = 0; |
fb73857a |
788 | } |
8aacddc1 |
789 | break; |
79072805 |
790 | case SAVEt_INT: /* int reference */ |
791 | ptr = SSPOPPTR; |
792 | *(int*)ptr = (int)SSPOPINT; |
793 | break; |
85e6fe83 |
794 | case SAVEt_LONG: /* long reference */ |
795 | ptr = SSPOPPTR; |
796 | *(long*)ptr = (long)SSPOPLONG; |
797 | break; |
9febdf04 |
798 | case SAVEt_BOOL: /* bool reference */ |
799 | ptr = SSPOPPTR; |
800 | *(bool*)ptr = (bool)SSPOPBOOL; |
801 | break; |
79072805 |
802 | case SAVEt_I32: /* I32 reference */ |
803 | ptr = SSPOPPTR; |
804 | *(I32*)ptr = (I32)SSPOPINT; |
805 | break; |
55497cff |
806 | case SAVEt_I16: /* I16 reference */ |
807 | ptr = SSPOPPTR; |
808 | *(I16*)ptr = (I16)SSPOPINT; |
809 | break; |
146174a9 |
810 | case SAVEt_I8: /* I8 reference */ |
811 | ptr = SSPOPPTR; |
812 | *(I8*)ptr = (I8)SSPOPINT; |
813 | break; |
a0d0e21e |
814 | case SAVEt_IV: /* IV reference */ |
815 | ptr = SSPOPPTR; |
816 | *(IV*)ptr = (IV)SSPOPIV; |
817 | break; |
79072805 |
818 | case SAVEt_SPTR: /* SV* reference */ |
819 | ptr = SSPOPPTR; |
820 | *(SV**)ptr = (SV*)SSPOPPTR; |
821 | break; |
146174a9 |
822 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 |
823 | case SAVEt_PPTR: /* char* reference */ |
824 | ptr = SSPOPPTR; |
825 | *(char**)ptr = (char*)SSPOPPTR; |
826 | break; |
79072805 |
827 | case SAVEt_HPTR: /* HV* reference */ |
828 | ptr = SSPOPPTR; |
829 | *(HV**)ptr = (HV*)SSPOPPTR; |
830 | break; |
831 | case SAVEt_APTR: /* AV* reference */ |
832 | ptr = SSPOPPTR; |
833 | *(AV**)ptr = (AV*)SSPOPPTR; |
834 | break; |
835 | case SAVEt_NSTAB: |
836 | gv = (GV*)SSPOPPTR; |
1f96a9ed |
837 | (void)sv_clear((SV*)gv); |
79072805 |
838 | break; |
fb73857a |
839 | case SAVEt_GP: /* scalar reference */ |
79072805 |
840 | ptr = SSPOPPTR; |
841 | gv = (GV*)SSPOPPTR; |
aa07b2f6 |
842 | if (SvPVX_const(gv) && SvLEN(gv) > 0) { |
843 | Safefree(SvPVX_const(gv)); |
8aacddc1 |
844 | } |
f880fe2f |
845 | SvPV_set(gv, (char *)SSPOPPTR); |
b162af07 |
846 | SvCUR_set(gv, (STRLEN)SSPOPIV); |
847 | SvLEN_set(gv, (STRLEN)SSPOPIV); |
8aacddc1 |
848 | gp_free(gv); |
849 | GvGP(gv) = (GP*)ptr; |
fae75791 |
850 | if (GvCVu(gv)) |
3280af22 |
851 | PL_sub_generation++; /* putting a method back into circulation */ |
4633a7c4 |
852 | SvREFCNT_dec(gv); |
8aacddc1 |
853 | break; |
8990e307 |
854 | case SAVEt_FREESV: |
855 | ptr = SSPOPPTR; |
856 | SvREFCNT_dec((SV*)ptr); |
857 | break; |
26d9b02f |
858 | case SAVEt_MORTALIZESV: |
859 | ptr = SSPOPPTR; |
860 | sv_2mortal((SV*)ptr); |
861 | break; |
8990e307 |
862 | case SAVEt_FREEOP: |
863 | ptr = SSPOPPTR; |
f3548bdc |
864 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
8990e307 |
865 | op_free((OP*)ptr); |
866 | break; |
867 | case SAVEt_FREEPV: |
868 | ptr = SSPOPPTR; |
1df70142 |
869 | Safefree(ptr); |
8990e307 |
870 | break; |
871 | case SAVEt_CLEARSV: |
3280af22 |
872 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
8990e307 |
873 | sv = *(SV**)ptr; |
dd2155a4 |
874 | |
875 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, |
f3548bdc |
876 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
877 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), |
878 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), |
dd2155a4 |
879 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
880 | )); |
881 | |
bc44cdaf |
882 | /* Can clear pad variable in place? */ |
883 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
8aacddc1 |
884 | /* |
885 | * if a my variable that was made readonly is going out of |
886 | * scope, we want to remove the readonlyness so that it can |
887 | * go out of scope quietly |
8aacddc1 |
888 | */ |
a26e96df |
889 | if (SvPADMY(sv) && !SvFAKE(sv)) |
8aacddc1 |
890 | SvREADONLY_off(sv); |
891 | |
6fc92669 |
892 | if (SvTHINKFIRST(sv)) |
840a7b70 |
893 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
a0d0e21e |
894 | if (SvMAGICAL(sv)) |
895 | mg_free(sv); |
8990e307 |
896 | |
897 | switch (SvTYPE(sv)) { |
898 | case SVt_NULL: |
899 | break; |
900 | case SVt_PVAV: |
44a8e56a |
901 | av_clear((AV*)sv); |
8990e307 |
902 | break; |
903 | case SVt_PVHV: |
44a8e56a |
904 | hv_clear((HV*)sv); |
8990e307 |
905 | break; |
906 | case SVt_PVCV: |
cea2e8a9 |
907 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
8990e307 |
908 | default: |
0c34ef67 |
909 | SvOK_off(sv); |
8990e307 |
910 | break; |
911 | } |
d9d18af6 |
912 | SvPADSTALE_on(sv); /* mark as no longer live */ |
8990e307 |
913 | } |
914 | else { /* Someone has a claim on this, so abandon it. */ |
35a4481c |
915 | const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
8990e307 |
916 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
917 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
918 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
919 | default: *(SV**)ptr = NEWSV(0,0); break; |
920 | } |
53868620 |
921 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
d9d18af6 |
922 | /* preserve pad nature, but also mark as not live |
923 | * for any closure capturing */ |
2740392c |
924 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
8990e307 |
925 | } |
926 | break; |
927 | case SAVEt_DELETE: |
928 | ptr = SSPOPPTR; |
929 | hv = (HV*)ptr; |
930 | ptr = SSPOPPTR; |
748a9306 |
931 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
4e4c362e |
932 | SvREFCNT_dec(hv); |
8aacddc1 |
933 | Safefree(ptr); |
8990e307 |
934 | break; |
a0d0e21e |
935 | case SAVEt_DESTRUCTOR: |
936 | ptr = SSPOPPTR; |
146174a9 |
937 | (*SSPOPDPTR)(ptr); |
938 | break; |
939 | case SAVEt_DESTRUCTOR_X: |
940 | ptr = SSPOPPTR; |
acfe0abc |
941 | (*SSPOPDXPTR)(aTHX_ ptr); |
a0d0e21e |
942 | break; |
943 | case SAVEt_REGCONTEXT: |
455ece5e |
944 | case SAVEt_ALLOC: |
161b7d16 |
945 | i = SSPOPINT; |
3280af22 |
946 | PL_savestack_ix -= i; /* regexp must have croaked */ |
a0d0e21e |
947 | break; |
55497cff |
948 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
161b7d16 |
949 | i = SSPOPINT; |
3280af22 |
950 | PL_stack_sp = PL_stack_base + i; |
55497cff |
951 | break; |
161b7d16 |
952 | case SAVEt_AELEM: /* array element */ |
953 | value = (SV*)SSPOPPTR; |
954 | i = SSPOPINT; |
955 | av = (AV*)SSPOPPTR; |
5dd42e15 |
956 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
957 | SvREFCNT_dec(value); |
161b7d16 |
958 | ptr = av_fetch(av,i,1); |
4e4c362e |
959 | if (ptr) { |
960 | sv = *(SV**)ptr; |
3280af22 |
961 | if (sv && sv != &PL_sv_undef) { |
14befaf4 |
962 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
4e4c362e |
963 | (void)SvREFCNT_inc(sv); |
4e4c362e |
964 | goto restore_sv; |
965 | } |
966 | } |
967 | SvREFCNT_dec(av); |
968 | SvREFCNT_dec(value); |
969 | break; |
161b7d16 |
970 | case SAVEt_HELEM: /* hash element */ |
971 | value = (SV*)SSPOPPTR; |
9002cb76 |
972 | sv = (SV*)SSPOPPTR; |
161b7d16 |
973 | hv = (HV*)SSPOPPTR; |
974 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
4e4c362e |
975 | if (ptr) { |
35a4481c |
976 | const SV * const oval = HeVAL((HE*)ptr); |
3280af22 |
977 | if (oval && oval != &PL_sv_undef) { |
4e4c362e |
978 | ptr = &HeVAL((HE*)ptr); |
14befaf4 |
979 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
4e4c362e |
980 | (void)SvREFCNT_inc(*(SV**)ptr); |
4e4c362e |
981 | SvREFCNT_dec(sv); |
5dd42e15 |
982 | av = (AV*)hv; /* what to refcnt_dec */ |
4e4c362e |
983 | goto restore_sv; |
984 | } |
985 | } |
986 | SvREFCNT_dec(hv); |
987 | SvREFCNT_dec(sv); |
988 | SvREFCNT_dec(value); |
989 | break; |
462e5cf6 |
990 | case SAVEt_OP: |
533c011a |
991 | PL_op = (OP*)SSPOPPTR; |
462e5cf6 |
992 | break; |
25eaa213 |
993 | case SAVEt_HINTS: |
045ac317 |
994 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
995 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
996 | GvHV(PL_hintgv) = NULL; |
997 | } |
3280af22 |
998 | *(I32*)&PL_hints = (I32)SSPOPINT; |
dfa41748 |
999 | if (PL_hints & HINT_LOCALIZE_HH) { |
1000 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
1001 | GvHV(PL_hintgv) = (HV*)SSPOPPTR; |
1002 | } |
1003 | |
b3ac6de7 |
1004 | break; |
cb50131a |
1005 | case SAVEt_COMPPAD: |
f3548bdc |
1006 | PL_comppad = (PAD*)SSPOPPTR; |
58ed4fbe |
1007 | if (PL_comppad) |
cb50131a |
1008 | PL_curpad = AvARRAY(PL_comppad); |
1009 | else |
1010 | PL_curpad = Null(SV**); |
1011 | break; |
c3564e5c |
1012 | case SAVEt_PADSV: |
1013 | { |
35a4481c |
1014 | const PADOFFSET off = (PADOFFSET)SSPOPLONG; |
c3564e5c |
1015 | ptr = SSPOPPTR; |
1016 | if (ptr) |
f3548bdc |
1017 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
c3564e5c |
1018 | } |
1019 | break; |
8b7059b1 |
1020 | case SAVEt_SAVESWITCHSTACK: |
1021 | { |
1022 | dSP; |
1023 | AV* t = (AV*)SSPOPPTR; |
1024 | AV* f = (AV*)SSPOPPTR; |
1025 | SWITCHSTACK(t,f); |
1026 | PL_curstackinfo->si_stack = f; |
1027 | } |
1028 | break; |
14f338dc |
1029 | case SAVEt_SET_SVFLAGS: |
1030 | { |
35a4481c |
1031 | const U32 val = (U32)SSPOPINT; |
1032 | const U32 mask = (U32)SSPOPINT; |
14f338dc |
1033 | sv = (SV*)SSPOPPTR; |
1034 | SvFLAGS(sv) &= ~mask; |
1035 | SvFLAGS(sv) |= val; |
1036 | } |
1037 | break; |
79072805 |
1038 | default: |
cea2e8a9 |
1039 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
79072805 |
1040 | } |
1041 | } |
1042 | } |
8990e307 |
1043 | |
8990e307 |
1044 | void |
864dbfa3 |
1045 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 |
1046 | { |
35ff7856 |
1047 | #ifdef DEBUGGING |
22c35a8c |
1048 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 |
1049 | if (CxTYPE(cx) != CXt_SUBST) { |
760ac839 |
1050 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
146174a9 |
1051 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
1052 | PTR2UV(cx->blk_oldcop)); |
760ac839 |
1053 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1054 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
146174a9 |
1055 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
1056 | PTR2UV(cx->blk_oldpm)); |
760ac839 |
1057 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
8990e307 |
1058 | } |
6b35e009 |
1059 | switch (CxTYPE(cx)) { |
8990e307 |
1060 | case CXt_NULL: |
1061 | case CXt_BLOCK: |
1062 | break; |
146174a9 |
1063 | case CXt_FORMAT: |
1064 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1065 | PTR2UV(cx->blk_sub.cv)); |
1066 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", |
1067 | PTR2UV(cx->blk_sub.gv)); |
1068 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", |
1069 | PTR2UV(cx->blk_sub.dfoutgv)); |
1070 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
1071 | (int)cx->blk_sub.hasargs); |
f39bc417 |
1072 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1073 | PTR2UV(cx->blk_sub.retop)); |
146174a9 |
1074 | break; |
8990e307 |
1075 | case CXt_SUB: |
146174a9 |
1076 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
1077 | PTR2UV(cx->blk_sub.cv)); |
760ac839 |
1078 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 |
1079 | (long)cx->blk_sub.olddepth); |
760ac839 |
1080 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
8990e307 |
1081 | (int)cx->blk_sub.hasargs); |
146174a9 |
1082 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
1083 | (int)cx->blk_sub.lval); |
f39bc417 |
1084 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n", |
1085 | PTR2UV(cx->blk_sub.retop)); |
8990e307 |
1086 | break; |
1087 | case CXt_EVAL: |
760ac839 |
1088 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
8990e307 |
1089 | (long)cx->blk_eval.old_in_eval); |
760ac839 |
1090 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
22c35a8c |
1091 | PL_op_name[cx->blk_eval.old_op_type], |
1092 | PL_op_desc[cx->blk_eval.old_op_type]); |
0f79a09d |
1093 | if (cx->blk_eval.old_namesv) |
1094 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
aa07b2f6 |
1095 | SvPVX_const(cx->blk_eval.old_namesv)); |
146174a9 |
1096 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
1097 | PTR2UV(cx->blk_eval.old_eval_root)); |
f39bc417 |
1098 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n", |
1099 | PTR2UV(cx->blk_eval.retop)); |
8990e307 |
1100 | break; |
1101 | |
1102 | case CXt_LOOP: |
760ac839 |
1103 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
8990e307 |
1104 | cx->blk_loop.label); |
760ac839 |
1105 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
8990e307 |
1106 | (long)cx->blk_loop.resetsp); |
146174a9 |
1107 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
1108 | PTR2UV(cx->blk_loop.redo_op)); |
1109 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
1110 | PTR2UV(cx->blk_loop.next_op)); |
1111 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", |
1112 | PTR2UV(cx->blk_loop.last_op)); |
760ac839 |
1113 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
8990e307 |
1114 | (long)cx->blk_loop.iterix); |
146174a9 |
1115 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
1116 | PTR2UV(cx->blk_loop.iterary)); |
1117 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
1118 | PTR2UV(CxITERVAR(cx))); |
1119 | if (CxITERVAR(cx)) |
1120 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", |
1121 | PTR2UV(cx->blk_loop.itersave)); |
1122 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", |
1123 | PTR2UV(cx->blk_loop.iterlval)); |
8990e307 |
1124 | break; |
1125 | |
1126 | case CXt_SUBST: |
760ac839 |
1127 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 |
1128 | (long)cx->sb_iters); |
760ac839 |
1129 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 |
1130 | (long)cx->sb_maxiters); |
35ef4773 |
1131 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1132 | (long)cx->sb_rflags); |
760ac839 |
1133 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
8990e307 |
1134 | (long)cx->sb_once); |
760ac839 |
1135 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 |
1136 | cx->sb_orig); |
146174a9 |
1137 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
1138 | PTR2UV(cx->sb_dstr)); |
1139 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", |
1140 | PTR2UV(cx->sb_targ)); |
1141 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", |
1142 | PTR2UV(cx->sb_s)); |
1143 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", |
1144 | PTR2UV(cx->sb_m)); |
1145 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", |
1146 | PTR2UV(cx->sb_strend)); |
1147 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", |
1148 | PTR2UV(cx->sb_rxres)); |
8990e307 |
1149 | break; |
1150 | } |
17c3b450 |
1151 | #endif /* DEBUGGING */ |
35ff7856 |
1152 | } |
241d1a3b |
1153 | |
1154 | /* |
1155 | * Local variables: |
1156 | * c-indentation-style: bsd |
1157 | * c-basic-offset: 4 |
1158 | * indent-tabs-mode: t |
1159 | * End: |
1160 | * |
37442d52 |
1161 | * ex: set ts=8 sts=4 sw=4 noet: |
1162 | */ |