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Re-order Perl_save_delete() to PTR, INT, PTR.
[perl5.git] / scope.c
CommitLineData
a0d0e21e 1/* scope.c
79072805 2 *
1129b882
NC
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
79072805
LW
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
LW
9 */
10
11/*
4ac71550
TC
12 * For the fashion of Minas Tirith was such that it was built on seven
13 * levels...
14 *
15 * [p.751 of _The Lord of the Rings_, V/i: "Minas Tirith"]
79072805
LW
16 */
17
ddfa107c 18/* This file contains functions to manipulate several of Perl's stacks;
166f8a29
DM
19 * in particular it contains code to push various types of things onto
20 * the savestack, then to pop them off and perform the correct restorative
21 * action for each one. This corresponds to the cleanup Perl does at
22 * each scope exit.
23 */
24
79072805 25#include "EXTERN.h"
864dbfa3 26#define PERL_IN_SCOPE_C
79072805
LW
27#include "perl.h"
28
a0d0e21e 29SV**
864dbfa3 30Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
a0d0e21e 31{
97aff369 32 dVAR;
7918f24d
NC
33
34 PERL_ARGS_ASSERT_STACK_GROW;
35
3280af22 36 PL_stack_sp = sp;
2ce36478 37#ifndef STRESS_REALLOC
3280af22 38 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
2ce36478 39#else
6b88bc9c 40 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
2ce36478 41#endif
3280af22 42 return PL_stack_sp;
a0d0e21e
LW
43}
44
2ce36478
SM
45#ifndef STRESS_REALLOC
46#define GROW(old) ((old) * 3 / 2)
47#else
48#define GROW(old) ((old) + 1)
49#endif
50
e336de0d 51PERL_SI *
864dbfa3 52Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d 53{
97aff369 54 dVAR;
e336de0d 55 PERL_SI *si;
a02a5408 56 Newx(si, 1, PERL_SI);
e336de0d
GS
57 si->si_stack = newAV();
58 AvREAL_off(si->si_stack);
59 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 60 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
61 AvFILLp(si->si_stack) = 0;
62 si->si_prev = 0;
63 si->si_next = 0;
64 si->si_cxmax = cxitems - 1;
65 si->si_cxix = -1;
e788e7d3 66 si->si_type = PERLSI_UNDEF;
a02a5408 67 Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
9965345d
JH
68 /* Without any kind of initialising PUSHSUBST()
69 * in pp_subst() will read uninitialised heap. */
7e337ee0 70 PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
71 return si;
72}
73
79072805 74I32
864dbfa3 75Perl_cxinc(pTHX)
79072805 76{
97aff369 77 dVAR;
a3b680e6 78 const IV old_max = cxstack_max;
2ce36478 79 cxstack_max = GROW(cxstack_max);
c09156bb 80 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
9965345d
JH
81 /* Without any kind of initialising deep enough recursion
82 * will end up reading uninitialised PERL_CONTEXTs. */
7e337ee0 83 PoisonNew(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
79072805
LW
84 return cxstack_ix + 1;
85}
86
79072805 87void
864dbfa3 88Perl_push_scope(pTHX)
79072805 89{
97aff369 90 dVAR;
3280af22
NIS
91 if (PL_scopestack_ix == PL_scopestack_max) {
92 PL_scopestack_max = GROW(PL_scopestack_max);
93 Renew(PL_scopestack, PL_scopestack_max, I32);
79072805 94 }
3280af22 95 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
79072805
LW
96
97}
98
99void
864dbfa3 100Perl_pop_scope(pTHX)
79072805 101{
97aff369 102 dVAR;
35a4481c 103 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 104 LEAVE_SCOPE(oldsave);
79072805
LW
105}
106
107void
864dbfa3 108Perl_markstack_grow(pTHX)
a0d0e21e 109{
97aff369 110 dVAR;
35a4481c
AL
111 const I32 oldmax = PL_markstack_max - PL_markstack;
112 const I32 newmax = GROW(oldmax);
a0d0e21e 113
3280af22
NIS
114 Renew(PL_markstack, newmax, I32);
115 PL_markstack_ptr = PL_markstack + oldmax;
116 PL_markstack_max = PL_markstack + newmax;
a0d0e21e
LW
117}
118
119void
864dbfa3 120Perl_savestack_grow(pTHX)
79072805 121{
97aff369 122 dVAR;
8aacddc1 123 PL_savestack_max = GROW(PL_savestack_max) + 4;
3280af22 124 Renew(PL_savestack, PL_savestack_max, ANY);
79072805
LW
125}
126
4b3c1a47
AE
127void
128Perl_savestack_grow_cnt(pTHX_ I32 need)
129{
97aff369 130 dVAR;
4b3c1a47
AE
131 PL_savestack_max = PL_savestack_ix + need;
132 Renew(PL_savestack, PL_savestack_max, ANY);
133}
134
2ce36478
SM
135#undef GROW
136
79072805 137void
864dbfa3 138Perl_tmps_grow(pTHX_ I32 n)
677b06e3 139{
97aff369 140 dVAR;
677b06e3
GS
141#ifndef STRESS_REALLOC
142 if (n < 128)
143 n = (PL_tmps_max < 512) ? 128 : 512;
144#endif
145 PL_tmps_max = PL_tmps_ix + n + 1;
146 Renew(PL_tmps_stack, PL_tmps_max, SV*);
147}
148
149
150void
864dbfa3 151Perl_free_tmps(pTHX)
79072805 152{
97aff369 153 dVAR;
79072805 154 /* XXX should tmps_floor live in cxstack? */
35a4481c 155 const I32 myfloor = PL_tmps_floor;
3280af22 156 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
901017d6 157 SV* const sv = PL_tmps_stack[PL_tmps_ix];
a0714e2c 158 PL_tmps_stack[PL_tmps_ix--] = NULL;
8aacddc1 159 if (sv && sv != &PL_sv_undef) {
463ee0b2 160 SvTEMP_off(sv);
8990e307 161 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2 162 }
79072805
LW
163 }
164}
165
76e3520e 166STATIC SV *
af7df257 167S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
79072805 168{
97aff369 169 dVAR;
901017d6 170 SV * const osv = *sptr;
561b68a9 171 register SV * const sv = *sptr = newSV(0);
79072805 172
7918f24d
NC
173 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
174
a0d0e21e 175 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
a0d0e21e 176 if (SvGMAGICAL(osv)) {
35a4481c 177 const bool oldtainted = PL_tainted;
a0d0e21e 178 SvFLAGS(osv) |= (SvFLAGS(osv) &
c268c2a6 179 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 180 PL_tainted = oldtainted;
a0d0e21e 181 }
af7df257 182 mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0);
79072805
LW
183 }
184 return sv;
185}
186
dfcd3de5
NC
187void
188Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3
NC
189{
190 dVAR;
191 SSCHECK(3);
192 SSPUSHPTR(ptr1);
193 SSPUSHPTR(ptr2);
194 SSPUSHINT(type);
195}
196
7a4c00b4 197SV *
864dbfa3 198Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 199{
97aff369 200 dVAR;
fb4fc1fa 201 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
202
203 PERL_ARGS_ASSERT_SAVE_SCALAR;
204
27cc343c 205 PL_localizing = 1;
0cbee0a4 206 SvGETMAGIC(*sptr);
27cc343c 207 PL_localizing = 0;
e22024d3 208 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
af7df257 209 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
210}
211
f4dd75d9 212/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
213 * restore a global SV to its prior contents, freeing new value. */
214void
864dbfa3 215Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 216{
97aff369 217 dVAR;
7918f24d
NC
218
219 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
220
e22024d3 221 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
222}
223
f4dd75d9
GS
224/* Like save_pptr(), but also Safefree()s the new value if it is different
225 * from the old one. Can be used to restore a global char* to its prior
226 * contents, freeing new value. */
227void
228Perl_save_generic_pvref(pTHX_ char **str)
229{
97aff369 230 dVAR;
7918f24d
NC
231
232 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
233
e22024d3 234 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
235}
236
05ec9bb3
NIS
237/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
238 * Can be used to restore a shared global char* to its prior
239 * contents, freeing new value. */
240void
241Perl_save_shared_pvref(pTHX_ char **str)
242{
97aff369 243 dVAR;
7918f24d
NC
244
245 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
246
e22024d3 247 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
248}
249
14f338dc
DM
250/* set the SvFLAGS specified by mask to the values in val */
251
252void
253Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
254{
97aff369 255 dVAR;
7918f24d
NC
256
257 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
258
14f338dc
DM
259 SSCHECK(4);
260 SSPUSHPTR(sv);
261 SSPUSHINT(mask);
262 SSPUSHINT(val);
263 SSPUSHINT(SAVEt_SET_SVFLAGS);
264}
265
79072805 266void
864dbfa3 267Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 268{
97aff369 269 dVAR;
7918f24d
NC
270
271 PERL_ARGS_ASSERT_SAVE_GP;
272
e22024d3 273 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 274
5f05dabc 275 if (empty) {
12816592 276 GP *gp = Perl_newGP(aTHX_ gv);
146174a9 277
fae75791 278 if (GvCVu(gv))
e1a479c5 279 mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/
146174a9
CB
280 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
281 gp->gp_io = newIO();
282 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
283 }
72651472
NC
284#ifdef PERL_DONT_CREATE_GVSV
285 if (gv == PL_errgv) {
286 /* We could scatter this logic everywhere by changing the
287 definition of ERRSV from GvSV() to GvSVn(), but it seems more
288 efficient to do this check once here. */
289 gp->gp_sv = newSV(0);
290 }
291#endif
12816592 292 GvGP(gv) = gp;
5f05dabc
PP
293 }
294 else {
44a8e56a 295 gp_ref(GvGP(gv));
5f05dabc
PP
296 GvINTRO_on(gv);
297 }
79072805 298}
79072805 299
79072805 300AV *
864dbfa3 301Perl_save_ary(pTHX_ GV *gv)
79072805 302{
97aff369 303 dVAR;
901017d6 304 AV * const oav = GvAVn(gv);
67a38de0 305 AV *av;
fb73857a 306
7918f24d
NC
307 PERL_ARGS_ASSERT_SAVE_ARY;
308
67a38de0
NIS
309 if (!AvREAL(oav) && AvREIFY(oav))
310 av_reify(oav);
e22024d3 311 save_pushptrptr(gv, oav, SAVEt_AV);
79072805 312
4608196e 313 GvAV(gv) = NULL;
fb73857a 314 av = GvAVn(gv);
0cbee0a4 315 if (SvMAGIC(oav))
9711599e 316 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 317 return av;
79072805
LW
318}
319
320HV *
864dbfa3 321Perl_save_hash(pTHX_ GV *gv)
79072805 322{
97aff369 323 dVAR;
fb73857a
PP
324 HV *ohv, *hv;
325
7918f24d
NC
326 PERL_ARGS_ASSERT_SAVE_HASH;
327
e22024d3 328 save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV);
79072805 329
4608196e 330 GvHV(gv) = NULL;
fb73857a 331 hv = GvHVn(gv);
0cbee0a4 332 if (SvMAGIC(ohv))
9711599e 333 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 334 return hv;
79072805
LW
335}
336
337void
864dbfa3 338Perl_save_item(pTHX_ register SV *item)
79072805 339{
97aff369 340 dVAR;
901017d6 341 register SV * const sv = newSVsv(item);
79072805 342
7918f24d
NC
343 PERL_ARGS_ASSERT_SAVE_ITEM;
344
e22024d3
NC
345 save_pushptrptr(item, /* remember the pointer */
346 sv, /* remember the value */
347 SAVEt_ITEM);
79072805
LW
348}
349
350void
1409bc06 351Perl_save_bool(pTHX_ bool *boolp)
79072805 352{
97aff369 353 dVAR;
7918f24d 354
1409bc06 355 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 356
79072805 357 SSCHECK(3);
1409bc06
NC
358 SSPUSHBOOL(*boolp);
359 SSPUSHPTR(boolp);
360 SSPUSHINT(SAVEt_BOOL);
361}
362
7623d426
NC
363void
364Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06
NC
365{
366 dVAR;
367 SSCHECK(3);
368 SSPUSHINT(i);
369 SSPUSHPTR(ptr);
370 SSPUSHINT(type);
79072805
LW
371}
372
373void
1409bc06 374Perl_save_int(pTHX_ int *intp)
9febdf04 375{
97aff369 376 dVAR;
7918f24d 377
1409bc06 378 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 379
1409bc06 380 save_pushi32ptr(*intp, intp, SAVEt_INT);
9febdf04
RH
381}
382
383void
58188858
RGS
384Perl_save_I8(pTHX_ I8 *bytep)
385{
386 dVAR;
7918f24d
NC
387
388 PERL_ARGS_ASSERT_SAVE_I8;
389
1409bc06 390 save_pushi32ptr(*bytep, bytep, SAVEt_I8);
58188858
RGS
391}
392
393void
87a84751
JH
394Perl_save_I16(pTHX_ I16 *intp)
395{
396 dVAR;
7918f24d
NC
397
398 PERL_ARGS_ASSERT_SAVE_I16;
399
1409bc06 400 save_pushi32ptr(*intp, intp, SAVEt_I16);
87a84751
JH
401}
402
403void
864dbfa3 404Perl_save_I32(pTHX_ I32 *intp)
79072805 405{
97aff369 406 dVAR;
7918f24d
NC
407
408 PERL_ARGS_ASSERT_SAVE_I32;
409
1409bc06 410 save_pushi32ptr(*intp, intp, SAVEt_I32);
79072805
LW
411}
412
85e6fe83
LW
413/* Cannot use save_sptr() to store a char* since the SV** cast will
414 * force word-alignment and we'll miss the pointer.
415 */
416void
864dbfa3 417Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 418{
97aff369 419 dVAR;
7918f24d
NC
420
421 PERL_ARGS_ASSERT_SAVE_PPTR;
422
e22024d3 423 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
424}
425
79072805 426void
146174a9
CB
427Perl_save_vptr(pTHX_ void *ptr)
428{
97aff369 429 dVAR;
7918f24d
NC
430
431 PERL_ARGS_ASSERT_SAVE_VPTR;
432
e22024d3 433 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
434}
435
436void
864dbfa3 437Perl_save_sptr(pTHX_ SV **sptr)
79072805 438{
97aff369 439 dVAR;
7918f24d
NC
440
441 PERL_ARGS_ASSERT_SAVE_SPTR;
442
e22024d3 443 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
444}
445
c3564e5c 446void
09edbca0 447Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 448{
97aff369 449 dVAR;
c3564e5c 450 SSCHECK(4);
f3548bdc 451 ASSERT_CURPAD_ACTIVE("save_padsv");
09edbca0 452 SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
f3548bdc 453 SSPUSHPTR(PL_comppad);
c3564e5c 454 SSPUSHLONG((long)off);
09edbca0 455 SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE);
c3564e5c
GS
456}
457
79072805 458void
864dbfa3 459Perl_save_hptr(pTHX_ HV **hptr)
79072805 460{
97aff369 461 dVAR;
7918f24d
NC
462
463 PERL_ARGS_ASSERT_SAVE_HPTR;
464
e22024d3 465 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
466}
467
468void
864dbfa3 469Perl_save_aptr(pTHX_ AV **aptr)
79072805 470{
97aff369 471 dVAR;
7918f24d
NC
472
473 PERL_ARGS_ASSERT_SAVE_APTR;
474
e22024d3 475 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
476}
477
478void
2fd8beea 479Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 480{
97aff369 481 dVAR;
8990e307 482 SSCHECK(2);
2fd8beea
NC
483 SSPUSHPTR(ptr);
484 SSPUSHINT(type);
8990e307
LW
485}
486
487void
864dbfa3 488Perl_save_clearsv(pTHX_ SV **svp)
8990e307 489{
97aff369 490 dVAR;
7918f24d
NC
491
492 PERL_ARGS_ASSERT_SAVE_CLEARSV;
493
f3548bdc 494 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 495 SSCHECK(2);
3280af22 496 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 497 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 498 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
499}
500
501void
864dbfa3 502Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 503{
97aff369 504 dVAR;
7918f24d
NC
505
506 PERL_ARGS_ASSERT_SAVE_DELETE;
507
8990e307 508 SSCHECK(4);
8990e307 509 SSPUSHPTR(key);
35d4f826 510 SSPUSHINT(klen);
b37c2d43 511 SSPUSHPTR(SvREFCNT_inc_simple(hv));
8990e307
LW
512 SSPUSHINT(SAVEt_DELETE);
513}
514
515void
12ab1f58
JH
516Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
517{
518 dVAR;
7918f24d
NC
519
520 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
521
12ab1f58
JH
522 SSCHECK(3);
523 SSPUSHDPTR(f);
524 SSPUSHPTR(p);
525 SSPUSHINT(SAVEt_DESTRUCTOR);
526}
527
528void
146174a9
CB
529Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
530{
97aff369 531 dVAR;
146174a9
CB
532 SSCHECK(3);
533 SSPUSHDXPTR(f);
534 SSPUSHPTR(p);
535 SSPUSHINT(SAVEt_DESTRUCTOR_X);
536}
537
538void
da8315f8
NC
539Perl_save_hints(pTHX)
540{
541 dVAR;
542 if (PL_compiling.cop_hints_hash) {
543 HINTS_REFCNT_LOCK;
544 PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
545 HINTS_REFCNT_UNLOCK;
546 }
547 SSCHECK(4);
548 if (PL_hints & HINT_LOCALIZE_HH) {
be84297e
NC
549 save_pushptri32ptr(GvHV(PL_hintgv), PL_hints,
550 PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 551 GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv));
be84297e
NC
552 } else {
553 save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 554 }
be84297e
NC
555}
556
557static void
558S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
559 const int type)
560{
561 SSCHECK(4);
562 SSPUSHPTR(ptr1);
563 SSPUSHINT(i);
564 SSPUSHPTR(ptr2);
565 SSPUSHINT(type);
da8315f8
NC
566}
567
568void
59413342 569Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
4e4c362e 570{
97aff369 571 dVAR;
bfc4de9f 572 SV *sv;
7918f24d
NC
573
574 PERL_ARGS_ASSERT_SAVE_AELEM;
575
0cbee0a4 576 SvGETMAGIC(*sptr);
be84297e
NC
577 save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr),
578 SAVEt_AELEM);
5dd42e15
DM
579 /* if it gets reified later, the restore will have the wrong refcnt */
580 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 581 SvREFCNT_inc_void(*sptr);
af7df257 582 save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
bfc4de9f
DM
583 sv = *sptr;
584 /* If we're localizing a tied array element, this new sv
585 * won't actually be stored in the array - so it won't get
586 * reaped when the localize ends. Ensure it gets reaped by
587 * mortifying it instead. DAPM */
588 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
589 sv_2mortal(sv);
4e4c362e
GS
590}
591
592void
af7df257 593Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 594{
97aff369 595 dVAR;
bfc4de9f 596 SV *sv;
7918f24d 597
af7df257 598 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 599
0cbee0a4 600 SvGETMAGIC(*sptr);
4e4c362e 601 SSCHECK(4);
b37c2d43 602 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 603 SSPUSHPTR(newSVsv(key));
4e4c362e
GS
604 SSPUSHPTR(SvREFCNT_inc(*sptr));
605 SSPUSHINT(SAVEt_HELEM);
af7df257 606 save_scalar_at(sptr, flags);
bfc4de9f
DM
607 sv = *sptr;
608 /* If we're localizing a tied hash element, this new sv
609 * won't actually be stored in the hash - so it won't get
610 * reaped when the localize ends. Ensure it gets reaped by
611 * mortifying it instead. DAPM */
612 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
613 sv_2mortal(sv);
4e4c362e
GS
614}
615
2053acbf
NC
616SV*
617Perl_save_svref(pTHX_ SV **sptr)
618{
619 dVAR;
7918f24d
NC
620
621 PERL_ARGS_ASSERT_SAVE_SVREF;
622
2053acbf 623 SvGETMAGIC(*sptr);
e22024d3 624 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 625 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
626}
627
455ece5e 628I32
864dbfa3 629Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 630{
97aff369 631 dVAR;
35a4481c 632 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 633 - (char*)PL_savestack);
35a4481c 634 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 635
1bb4c835 636 SSGROW(elems + 2);
455ece5e
AD
637
638 PL_savestack_ix += elems;
639 SSPUSHINT(elems);
640 SSPUSHINT(SAVEt_ALLOC);
641 return start;
642}
643
462e5cf6 644void
864dbfa3 645Perl_leave_scope(pTHX_ I32 base)
79072805 646{
97aff369 647 dVAR;
79072805
LW
648 register SV *sv;
649 register SV *value;
650 register GV *gv;
651 register AV *av;
652 register HV *hv;
20454177 653 void* ptr;
f4dd75d9 654 register char* str;
161b7d16 655 I32 i;
79072805
LW
656
657 if (base < -1)
cea2e8a9 658 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 659 while (PL_savestack_ix > base) {
c6ae7647
NC
660 TAINT_NOT;
661
79072805
LW
662 switch (SSPOPINT) {
663 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
664 value = MUTABLE_SV(SSPOPPTR);
665 sv = MUTABLE_SV(SSPOPPTR);
79072805 666 sv_replace(sv,value);
3280af22 667 PL_localizing = 2;
79072805 668 SvSETMAGIC(sv);
3280af22 669 PL_localizing = 0;
79072805 670 break;
8aacddc1 671 case SAVEt_SV: /* scalar reference */
ad64d0ec 672 value = MUTABLE_SV(SSPOPPTR);
159b6efe 673 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 674 ptr = &GvSV(gv);
502c6561 675 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
676 restore_sv:
677 sv = *(SV**)ptr;
2053acbf
NC
678 *(SV**)ptr = value;
679 SvREFCNT_dec(sv);
680 PL_localizing = 2;
681 SvSETMAGIC(value);
682 PL_localizing = 0;
683 SvREFCNT_dec(value);
684 if (av) /* actually an av, hv or gv */
685 SvREFCNT_dec(av);
686 break;
8aacddc1 687 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 688 ptr = SSPOPPTR;
b03d03b0 689 str = (char*)SSPOPPTR;
f4dd75d9
GS
690 if (*(char**)ptr != str) {
691 Safefree(*(char**)ptr);
692 *(char**)ptr = str;
693 }
694 break;
05ec9bb3
NIS
695 case SAVEt_SHARED_PVREF: /* shared pv */
696 str = (char*)SSPOPPTR;
697 ptr = SSPOPPTR;
698 if (*(char**)ptr != str) {
5e54c26f 699#ifdef NETWARE
9ecbcc42 700 PerlMem_free(*(char**)ptr);
5e54c26f 701#else
05ec9bb3 702 PerlMemShared_free(*(char**)ptr);
5e54c26f 703#endif
05ec9bb3
NIS
704 *(char**)ptr = str;
705 }
706 break;
8aacddc1 707 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 708 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 709 ptr = SSPOPPTR;
f4dd75d9
GS
710 sv = *(SV**)ptr;
711 *(SV**)ptr = value;
712 SvREFCNT_dec(sv);
b9d12d37
GS
713 SvREFCNT_dec(value);
714 break;
8aacddc1 715 case SAVEt_AV: /* array reference */
502c6561 716 av = MUTABLE_AV(SSPOPPTR);
159b6efe 717 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 718 if (GvAV(gv)) {
c4a7531d 719 SvREFCNT_dec(GvAV(gv));
fb73857a 720 }
8aacddc1 721 GvAV(gv) = av;
fb73857a 722 if (SvMAGICAL(av)) {
3280af22 723 PL_localizing = 2;
ad64d0ec 724 SvSETMAGIC(MUTABLE_SV(av));
3280af22 725 PL_localizing = 0;
fb73857a 726 }
8aacddc1
NIS
727 break;
728 case SAVEt_HV: /* hash reference */
85fbaab2 729 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 730 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 731 if (GvHV(gv)) {
c4a7531d 732 SvREFCNT_dec(GvHV(gv));
fb73857a 733 }
8aacddc1 734 GvHV(gv) = hv;
fb73857a 735 if (SvMAGICAL(hv)) {
3280af22 736 PL_localizing = 2;
ad64d0ec 737 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 738 PL_localizing = 0;
fb73857a 739 }
8aacddc1 740 break;
79072805
LW
741 case SAVEt_INT: /* int reference */
742 ptr = SSPOPPTR;
743 *(int*)ptr = (int)SSPOPINT;
744 break;
9febdf04
RH
745 case SAVEt_BOOL: /* bool reference */
746 ptr = SSPOPPTR;
747 *(bool*)ptr = (bool)SSPOPBOOL;
748 break;
79072805
LW
749 case SAVEt_I32: /* I32 reference */
750 ptr = SSPOPPTR;
3235b7a3
NC
751#ifdef PERL_DEBUG_READONLY_OPS
752 {
753 const I32 val = SSPOPINT;
754 if (*(I32*)ptr != val)
755 *(I32*)ptr = val;
756 }
757#else
79072805 758 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 759#endif
79072805
LW
760 break;
761 case SAVEt_SPTR: /* SV* reference */
762 ptr = SSPOPPTR;
ad64d0ec 763 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 764 break;
146174a9 765 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
766 case SAVEt_PPTR: /* char* reference */
767 ptr = SSPOPPTR;
768 *(char**)ptr = (char*)SSPOPPTR;
769 break;
79072805
LW
770 case SAVEt_HPTR: /* HV* reference */
771 ptr = SSPOPPTR;
85fbaab2 772 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
773 break;
774 case SAVEt_APTR: /* AV* reference */
775 ptr = SSPOPPTR;
502c6561 776 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 777 break;
fb73857a 778 case SAVEt_GP: /* scalar reference */
79072805 779 ptr = SSPOPPTR;
159b6efe 780 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1
NIS
781 gp_free(gv);
782 GvGP(gv) = (GP*)ptr;
dd69841b
BB
783 /* putting a method back into circulation ("local")*/
784 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
785 mro_method_changed_in(hv);
4633a7c4 786 SvREFCNT_dec(gv);
8aacddc1 787 break;
8990e307
LW
788 case SAVEt_FREESV:
789 ptr = SSPOPPTR;
ad64d0ec 790 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 791 break;
26d9b02f
JH
792 case SAVEt_MORTALIZESV:
793 ptr = SSPOPPTR;
ad64d0ec 794 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 795 break;
8990e307
LW
796 case SAVEt_FREEOP:
797 ptr = SSPOPPTR;
f3548bdc 798 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
799 op_free((OP*)ptr);
800 break;
801 case SAVEt_FREEPV:
802 ptr = SSPOPPTR;
1df70142 803 Safefree(ptr);
8990e307
LW
804 break;
805 case SAVEt_CLEARSV:
3280af22 806 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 807 sv = *(SV**)ptr;
dd2155a4
DM
808
809 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
810 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
811 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
812 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
813 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
814 ));
815
bc44cdaf
GS
816 /* Can clear pad variable in place? */
817 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
818 /*
819 * if a my variable that was made readonly is going out of
820 * scope, we want to remove the readonlyness so that it can
821 * go out of scope quietly
8aacddc1 822 */
a26e96df 823 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
824 SvREADONLY_off(sv);
825
6fc92669 826 if (SvTHINKFIRST(sv))
840a7b70 827 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
828 if (SvMAGICAL(sv))
829 mg_free(sv);
8990e307
LW
830
831 switch (SvTYPE(sv)) {
832 case SVt_NULL:
833 break;
834 case SVt_PVAV:
502c6561 835 av_clear(MUTABLE_AV(sv));
8990e307
LW
836 break;
837 case SVt_PVHV:
85fbaab2 838 hv_clear(MUTABLE_HV(sv));
8990e307
LW
839 break;
840 case SVt_PVCV:
cea2e8a9 841 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 842 default:
0c34ef67 843 SvOK_off(sv);
8990e307
LW
844 break;
845 }
d9d18af6 846 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
847 }
848 else { /* Someone has a claim on this, so abandon it. */
35a4481c 849 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 850 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
851 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
852 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 853 default: *(SV**)ptr = newSV(0); break;
8990e307 854 }
53868620 855 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
856 /* preserve pad nature, but also mark as not live
857 * for any closure capturing */
2740392c 858 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
859 }
860 break;
861 case SAVEt_DELETE:
862 ptr = SSPOPPTR;
85fbaab2 863 hv = MUTABLE_HV(ptr);
35d4f826 864 i = SSPOPINT;
8990e307 865 ptr = SSPOPPTR;
35d4f826 866 (void)hv_delete(hv, (char*)ptr, i, G_DISCARD);
4e4c362e 867 SvREFCNT_dec(hv);
8aacddc1 868 Safefree(ptr);
8990e307 869 break;
146174a9
CB
870 case SAVEt_DESTRUCTOR_X:
871 ptr = SSPOPPTR;
acfe0abc 872 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
873 break;
874 case SAVEt_REGCONTEXT:
455ece5e 875 case SAVEt_ALLOC:
161b7d16 876 i = SSPOPINT;
3280af22 877 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 878 break;
55497cff 879 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 880 i = SSPOPINT;
3280af22 881 PL_stack_sp = PL_stack_base + i;
55497cff 882 break;
ea8d6ae1
DB
883 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
884 i = SSPOPINT;
885 cxstack[i].blk_oldsp = SSPOPINT;
886 break;
161b7d16 887 case SAVEt_AELEM: /* array element */
ad64d0ec 888 value = MUTABLE_SV(SSPOPPTR);
161b7d16 889 i = SSPOPINT;
502c6561 890 av = MUTABLE_AV(SSPOPPTR);
658aef79 891 ptr = av_fetch(av,i,1);
5dd42e15
DM
892 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
893 SvREFCNT_dec(value);
4e4c362e
GS
894 if (ptr) {
895 sv = *(SV**)ptr;
3280af22 896 if (sv && sv != &PL_sv_undef) {
ad64d0ec 897 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 898 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
899 goto restore_sv;
900 }
901 }
902 SvREFCNT_dec(av);
903 SvREFCNT_dec(value);
904 break;
161b7d16 905 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
906 value = MUTABLE_SV(SSPOPPTR);
907 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 908 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 909 ptr = hv_fetch_ent(hv, sv, 1, 0);
4e4c362e 910 if (ptr) {
35a4481c 911 const SV * const oval = HeVAL((HE*)ptr);
3280af22 912 if (oval && oval != &PL_sv_undef) {
4e4c362e 913 ptr = &HeVAL((HE*)ptr);
ad64d0ec 914 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 915 SvREFCNT_inc_void(*(SV**)ptr);
4e4c362e 916 SvREFCNT_dec(sv);
502c6561 917 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
918 goto restore_sv;
919 }
920 }
921 SvREFCNT_dec(hv);
922 SvREFCNT_dec(sv);
923 SvREFCNT_dec(value);
924 break;
462e5cf6 925 case SAVEt_OP:
533c011a 926 PL_op = (OP*)SSPOPPTR;
462e5cf6 927 break;
25eaa213 928 case SAVEt_HINTS:
045ac317 929 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 930 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
931 GvHV(PL_hintgv) = NULL;
932 }
c28fe1ec
NC
933 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
934 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
601cee3b 935 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748 936 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 937 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 938 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
939 assert(GvHV(PL_hintgv));
940 } else if (!GvHV(PL_hintgv)) {
941 /* Need to add a new one manually, else gv_fetchpv() can
942 add one in this code:
943
944 if (SvTYPE(gv) == SVt_PVGV) {
945 if (add) {
946 GvMULTI_on(gv);
947 gv_init_sv(gv, sv_type);
948 if (*name=='!' && sv_type == SVt_PVHV && len==1)
949 require_errno(gv);
950 }
951 return gv;
952 }
953
954 and it won't have the magic set. */
955
956 HV *const hv = newHV();
957 hv_magic(hv, NULL, PERL_MAGIC_hints);
958 GvHV(PL_hintgv) = hv;
dfa41748 959 }
5b9c0671 960 assert(GvHV(PL_hintgv));
b3ac6de7 961 break;
cb50131a 962 case SAVEt_COMPPAD:
f3548bdc 963 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 964 if (PL_comppad)
cb50131a
CB
965 PL_curpad = AvARRAY(PL_comppad);
966 else
4608196e 967 PL_curpad = NULL;
cb50131a 968 break;
09edbca0 969 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 970 {
35a4481c 971 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 972 SV **svp;
c3564e5c 973 ptr = SSPOPPTR;
09edbca0
NC
974 assert (ptr);
975 svp = AvARRAY((PAD*)ptr) + off;
976 /* This mortalizing used to be done by POPLOOP() via itersave.
977 But as we have all the information here, we can do it here,
978 save even having to have itersave in the struct. */
979 sv_2mortal(*svp);
ad64d0ec 980 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
981 }
982 break;
8b7059b1
DM
983 case SAVEt_SAVESWITCHSTACK:
984 {
985 dSP;
502c6561
NC
986 AV *const t = MUTABLE_AV(SSPOPPTR);
987 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
988 SWITCHSTACK(t,f);
989 PL_curstackinfo->si_stack = f;
990 }
991 break;
14f338dc
DM
992 case SAVEt_SET_SVFLAGS:
993 {
35a4481c
AL
994 const U32 val = (U32)SSPOPINT;
995 const U32 mask = (U32)SSPOPINT;
ad64d0ec 996 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
997 SvFLAGS(sv) &= ~mask;
998 SvFLAGS(sv) |= val;
999 }
1000 break;
95e06916
NC
1001
1002 /* This would be a mathom, but Perl_save_svref() calls a static
1003 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 1004 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 1005 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
1006 ptr = SSPOPPTR;
1007 av = NULL; /* what to refcnt_dec */
1008 goto restore_sv;
95e06916
NC
1009
1010 /* These are only saved in mathoms.c */
1011 case SAVEt_NSTAB:
159b6efe 1012 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 1013 (void)sv_clear(MUTABLE_SV(gv));
95e06916 1014 break;
2053acbf
NC
1015 case SAVEt_LONG: /* long reference */
1016 ptr = SSPOPPTR;
1017 *(long*)ptr = (long)SSPOPLONG;
1018 break;
95e06916
NC
1019 case SAVEt_IV: /* IV reference */
1020 ptr = SSPOPPTR;
1021 *(IV*)ptr = (IV)SSPOPIV;
1022 break;
1023
2053acbf
NC
1024 case SAVEt_I16: /* I16 reference */
1025 ptr = SSPOPPTR;
1026 *(I16*)ptr = (I16)SSPOPINT;
1027 break;
1028 case SAVEt_I8: /* I8 reference */
1029 ptr = SSPOPPTR;
1030 *(I8*)ptr = (I8)SSPOPINT;
1031 break;
2053acbf
NC
1032 case SAVEt_DESTRUCTOR:
1033 ptr = SSPOPPTR;
1034 (*SSPOPDPTR)(ptr);
1035 break;
fc15ae8f
NC
1036 case SAVEt_COP_ARYBASE:
1037 ptr = SSPOPPTR;
1038 i = SSPOPINT;
1039 CopARYBASE_set((COP *)ptr, i);
1040 break;
68da3b2f
NC
1041 case SAVEt_COMPILE_WARNINGS:
1042 ptr = SSPOPPTR;
72dc9ed5 1043
68da3b2f
NC
1044 if (!specialWARN(PL_compiling.cop_warnings))
1045 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1046
10edeb5d 1047 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1048 break;
1ade1aa1
NC
1049 case SAVEt_RE_STATE:
1050 {
1051 const struct re_save_state *const state
1052 = (struct re_save_state *)
1053 (PL_savestack + PL_savestack_ix
1054 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1055 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1056
1ade1aa1
NC
1057 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1058 Safefree(PL_reg_start_tmp);
1ade1aa1 1059 }
1ade1aa1
NC
1060 if (PL_reg_poscache != state->re_state_reg_poscache) {
1061 Safefree(PL_reg_poscache);
1ade1aa1 1062 }
46ab3289 1063 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1064 }
1065 break;
7c197c94
DM
1066 case SAVEt_PARSER:
1067 ptr = SSPOPPTR;
1068 parser_free((yy_parser *) ptr);
1069 break;
79072805 1070 default:
cea2e8a9 1071 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1072 }
1073 }
1074}
8990e307 1075
8990e307 1076void
864dbfa3 1077Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1078{
97aff369 1079 dVAR;
7918f24d
NC
1080
1081 PERL_ARGS_ASSERT_CX_DUMP;
1082
35ff7856 1083#ifdef DEBUGGING
22c35a8c 1084 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1085 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1086 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1087 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1088 PTR2UV(cx->blk_oldcop));
760ac839
LW
1089 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1090 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1091 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1092 PTR2UV(cx->blk_oldpm));
760ac839 1093 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1094 }
6b35e009 1095 switch (CxTYPE(cx)) {
8990e307
LW
1096 case CXt_NULL:
1097 case CXt_BLOCK:
1098 break;
146174a9 1099 case CXt_FORMAT:
f9c764c5
NC
1100 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1101 PTR2UV(cx->blk_format.cv));
1102 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1103 PTR2UV(cx->blk_format.gv));
1104 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1105 PTR2UV(cx->blk_format.dfoutgv));
1106 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1107 (int)CxHASARGS(cx));
f9c764c5
NC
1108 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1109 PTR2UV(cx->blk_format.retop));
146174a9 1110 break;
8990e307 1111 case CXt_SUB:
146174a9
CB
1112 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1113 PTR2UV(cx->blk_sub.cv));
760ac839 1114 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1115 (long)cx->blk_sub.olddepth);
760ac839 1116 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1117 (int)CxHASARGS(cx));
1118 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1119 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1120 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1121 break;
1122 case CXt_EVAL:
760ac839 1123 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1124 (long)CxOLD_IN_EVAL(cx));
760ac839 1125 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1126 PL_op_name[CxOLD_OP_TYPE(cx)],
1127 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1128 if (cx->blk_eval.old_namesv)
1129 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1130 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1131 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1132 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1133 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1134 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1135 break;
1136
c6fdafd0 1137 case CXt_LOOP_LAZYIV:
d01136d6 1138 case CXt_LOOP_LAZYSV:
3b719c58
NC
1139 case CXt_LOOP_FOR:
1140 case CXt_LOOP_PLAIN:
0cbdab38 1141 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1142 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1143 (long)cx->blk_loop.resetsp);
022eaa24
NC
1144 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1145 PTR2UV(cx->blk_loop.my_op));
146174a9 1146 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1147 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1148 /* XXX: not accurate for LAZYSV/IV */
146174a9 1149 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1150 PTR2UV(cx->blk_loop.state_u.ary.ary));
1151 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1152 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1153 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1154 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1155 break;
1156
1157 case CXt_SUBST:
760ac839 1158 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1159 (long)cx->sb_iters);
760ac839 1160 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1161 (long)cx->sb_maxiters);
35ef4773
GS
1162 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1163 (long)cx->sb_rflags);
760ac839 1164 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1165 (long)CxONCE(cx));
760ac839 1166 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1167 cx->sb_orig);
146174a9
CB
1168 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1169 PTR2UV(cx->sb_dstr));
1170 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1171 PTR2UV(cx->sb_targ));
1172 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1173 PTR2UV(cx->sb_s));
1174 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1175 PTR2UV(cx->sb_m));
1176 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1177 PTR2UV(cx->sb_strend));
1178 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1179 PTR2UV(cx->sb_rxres));
8990e307
LW
1180 break;
1181 }
65e66c80 1182#else
96a5add6 1183 PERL_UNUSED_CONTEXT;
65e66c80 1184 PERL_UNUSED_ARG(cx);
17c3b450 1185#endif /* DEBUGGING */
35ff7856 1186}
241d1a3b
NC
1187
1188/*
1189 * Local variables:
1190 * c-indentation-style: bsd
1191 * c-basic-offset: 4
1192 * indent-tabs-mode: t
1193 * End:
1194 *
37442d52
RGS
1195 * ex: set ts=8 sts=4 sw=4 noet:
1196 */