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[perl5.git] / sv.c
CommitLineData
a0d0e21e 1/* sv.c
79072805 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
79072805
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
79072805
LW		 12 */
13
14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_SV_C
79072805 16#include "perl.h"
79072805 17
51371543 18#define FCALL *f
6fc92669 19#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
2c5424a7 20
51371543
GS		 21static void do_report_used(pTHXo_ SV *sv);
22static void do_clean_objs(pTHXo_ SV *sv);
23#ifndef DISABLE_DESTRUCTOR_KLUDGE
24static void do_clean_named_objs(pTHXo_ SV *sv);
25#endif
26static void do_clean_all(pTHXo_ SV *sv);
27
4561caa4
CS		 28/*
29 * "A time to plant, and a time to uproot what was planted..."
30 */
31
053fc874
GS		 32#define plant_SV(p) \
33 STMT_START { \
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
36 PL_sv_root = (p); \
37 --PL_sv_count; \
38 } STMT_END
a0d0e21e 39
fba3b22e 40/* sv_mutex must be held while calling uproot_SV() */
053fc874
GS		 41#define uproot_SV(p) \
42 STMT_START { \
43 (p) = PL_sv_root; \
44 PL_sv_root = (SV*)SvANY(p); \
45 ++PL_sv_count; \
46 } STMT_END
47
48#define new_SV(p) \
49 STMT_START { \
50 LOCK_SV_MUTEX; \
51 if (PL_sv_root) \
52 uproot_SV(p); \
53 else \
54 (p) = more_sv(); \
55 UNLOCK_SV_MUTEX; \
56 SvANY(p) = 0; \
57 SvREFCNT(p) = 1; \
58 SvFLAGS(p) = 0; \
59 } STMT_END
463ee0b2 60
a0d0e21e 61#ifdef DEBUGGING
4561caa4 62
053fc874
GS		 63#define del_SV(p) \
64 STMT_START { \
65 LOCK_SV_MUTEX; \
66 if (PL_debug & 32768) \
67 del_sv(p); \
68 else \
69 plant_SV(p); \
70 UNLOCK_SV_MUTEX; \
71 } STMT_END
a0d0e21e 72
76e3520e 73STATIC void
cea2e8a9 74S_del_sv(pTHX_ SV *p)
463ee0b2 75{
3280af22 76 if (PL_debug & 32768) {
4633a7c4 77 SV* sva;
a0d0e21e
LW		 78 SV* sv;
79 SV* svend;
80 int ok = 0;
3280af22 81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
4633a7c4
LW		 82 sv = sva + 1;
83 svend = &sva[SvREFCNT(sva)];
a0d0e21e
LW		 84 if (p >= sv && p < svend)
85 ok = 1;
86 }
87 if (!ok) {
0453d815
PM		 88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
1d7c1841
GS		 90 "Attempt to free non-arena SV: 0x%"UVxf,
91 PTR2UV(p));
a0d0e21e
LW		 92 return;
93 }
94 }
4561caa4 95 plant_SV(p);
463ee0b2 96}
a0d0e21e 97
4561caa4
CS		 98#else /* ! DEBUGGING */
99
100#define del_SV(p) plant_SV(p)
101
102#endif /* DEBUGGING */
463ee0b2 103
4633a7c4 104void
864dbfa3 105Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
463ee0b2 106{
4633a7c4 107 SV* sva = (SV*)ptr;
463ee0b2
LW		 108 register SV* sv;
109 register SV* svend;
14dd3ad8 110 Zero(ptr, size, char);
4633a7c4
LW		 111
112 /* The first SV in an arena isn't an SV. */
3280af22 113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
4633a7c4
LW		 114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
116
3280af22
NIS		 117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
4633a7c4
LW		 119
120 svend = &sva[SvREFCNT(sva) - 1];
121 sv = sva + 1;
463ee0b2 122 while (sv < svend) {
a0d0e21e 123 SvANY(sv) = (void *)(SV*)(sv + 1);
8990e307 124 SvFLAGS(sv) = SVTYPEMASK;
463ee0b2
LW		 125 sv++;
126 }
127 SvANY(sv) = 0;
4633a7c4
LW		 128 SvFLAGS(sv) = SVTYPEMASK;
129}
130
fba3b22e 131/* sv_mutex must be held while calling more_sv() */
76e3520e 132STATIC SV*
cea2e8a9 133S_more_sv(pTHX)
4633a7c4 134{
4561caa4
CS		 135 register SV* sv;
136
3280af22
NIS		 137 if (PL_nice_chunk) {
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
c07a80fd 140 }
1edc1566 141 else {
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
145 }
4561caa4
CS		 146 uproot_SV(sv);
147 return sv;
463ee0b2
LW		 148}
149
76e3520e 150STATIC void
cea2e8a9 151S_visit(pTHX_ SVFUNC_t f)
8990e307 152{
4633a7c4 153 SV* sva;
8990e307
LW		 154 SV* sv;
155 register SV* svend;
156
3280af22 157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
4633a7c4 158 svend = &sva[SvREFCNT(sva)];
4561caa4
CS		 159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
51371543 161 (FCALL)(aTHXo_ sv);
8990e307
LW		 162 }
163 }
164}
165
166void
864dbfa3 167Perl_sv_report_used(pTHX)
4561caa4 168{
0b94c7bb 169 visit(do_report_used);
4561caa4
CS		 170}
171
4561caa4 172void
864dbfa3 173Perl_sv_clean_objs(pTHX)
4561caa4 174{
3280af22 175 PL_in_clean_objs = TRUE;
0b94c7bb 176 visit(do_clean_objs);
4561caa4 177#ifndef DISABLE_DESTRUCTOR_KLUDGE
2d0f3c12 178 /* some barnacles may yet remain, clinging to typeglobs */
0b94c7bb 179 visit(do_clean_named_objs);
4561caa4 180#endif
3280af22 181 PL_in_clean_objs = FALSE;
4561caa4
CS		 182}
183
8990e307 184void
864dbfa3 185Perl_sv_clean_all(pTHX)
8990e307 186{
3280af22 187 PL_in_clean_all = TRUE;
0b94c7bb 188 visit(do_clean_all);
3280af22 189 PL_in_clean_all = FALSE;
8990e307 190}
463ee0b2 191
4633a7c4 192void
864dbfa3 193Perl_sv_free_arenas(pTHX)
4633a7c4
LW		 194{
195 SV* sva;
196 SV* svanext;
612f20c3 197 XPV *arena, *arenanext;
4633a7c4
LW		 198
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
201
3280af22 202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
4633a7c4
LW		 203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
206
207 if (!SvFAKE(sva))
1edc1566 208 Safefree((void *)sva);
4633a7c4 209 }
5f05dabc 210
612f20c3
GS		 211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
213 Safefree(arena);
214 }
215 PL_xiv_arenaroot = 0;
216
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
219 Safefree(arena);
220 }
221 PL_xnv_arenaroot = 0;
222
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
225 Safefree(arena);
226 }
227 PL_xrv_arenaroot = 0;
228
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
231 Safefree(arena);
232 }
233 PL_xpv_arenaroot = 0;
234
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
237 Safefree(arena);
238 }
239 PL_xpviv_arenaroot = 0;
240
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
243 Safefree(arena);
244 }
245 PL_xpvnv_arenaroot = 0;
246
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
249 Safefree(arena);
250 }
251 PL_xpvcv_arenaroot = 0;
252
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
255 Safefree(arena);
256 }
257 PL_xpvav_arenaroot = 0;
258
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
261 Safefree(arena);
262 }
263 PL_xpvhv_arenaroot = 0;
264
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
267 Safefree(arena);
268 }
269 PL_xpvmg_arenaroot = 0;
270
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
273 Safefree(arena);
274 }
275 PL_xpvlv_arenaroot = 0;
276
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
279 Safefree(arena);
280 }
281 PL_xpvbm_arenaroot = 0;
282
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
285 Safefree(arena);
286 }
287 PL_he_arenaroot = 0;
288
3280af22
NIS		 289 if (PL_nice_chunk)
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
293 PL_sv_arenaroot = 0;
294 PL_sv_root = 0;
4633a7c4
LW		 295}
296
1d7c1841
GS		 297void
298Perl_report_uninit(pTHX)
299{
300 if (PL_op)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
303 else
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
305}
306
76e3520e 307STATIC XPVIV*
cea2e8a9 308S_new_xiv(pTHX)
463ee0b2 309{
ea7c11a3 310 IV* xiv;
cbe51380
GS		 311 LOCK_SV_MUTEX;
312 if (!PL_xiv_root)
313 more_xiv();
314 xiv = PL_xiv_root;
315 /*
316 * See comment in more_xiv() -- RAM.
317 */
318 PL_xiv_root = *(IV**)xiv;
319 UNLOCK_SV_MUTEX;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
463ee0b2
LW		 321}
322
76e3520e 323STATIC void
cea2e8a9 324S_del_xiv(pTHX_ XPVIV *p)
463ee0b2 325{
23e6a22f 326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
cbe51380 327 LOCK_SV_MUTEX;
3280af22
NIS		 328 *(IV**)xiv = PL_xiv_root;
329 PL_xiv_root = xiv;
cbe51380 330 UNLOCK_SV_MUTEX;
463ee0b2
LW		 331}
332
cbe51380 333STATIC void
cea2e8a9 334S_more_xiv(pTHX)
463ee0b2 335{
ea7c11a3
SM		 336 register IV* xiv;
337 register IV* xivend;
8c52afec
IZ		 338 XPV* ptr;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
3280af22
NIS		 340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
a0d0e21e 342
ea7c11a3
SM		 343 xiv = (IV*) ptr;
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
3280af22 346 PL_xiv_root = xiv;
463ee0b2 347 while (xiv < xivend) {
ea7c11a3 348 *(IV**)xiv = (IV *)(xiv + 1);
463ee0b2
LW		 349 xiv++;
350 }
ea7c11a3 351 *(IV**)xiv = 0;
463ee0b2
LW		 352}
353
76e3520e 354STATIC XPVNV*
cea2e8a9 355S_new_xnv(pTHX)
463ee0b2 356{
65202027 357 NV* xnv;
cbe51380
GS		 358 LOCK_SV_MUTEX;
359 if (!PL_xnv_root)
360 more_xnv();
361 xnv = PL_xnv_root;
65202027 362 PL_xnv_root = *(NV**)xnv;
cbe51380
GS		 363 UNLOCK_SV_MUTEX;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
463ee0b2
LW		 365}
366
76e3520e 367STATIC void
cea2e8a9 368S_del_xnv(pTHX_ XPVNV *p)
463ee0b2 369{
65202027 370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
cbe51380 371 LOCK_SV_MUTEX;
65202027 372 *(NV**)xnv = PL_xnv_root;
3280af22 373 PL_xnv_root = xnv;
cbe51380 374 UNLOCK_SV_MUTEX;
463ee0b2
LW		 375}
376
cbe51380 377STATIC void
cea2e8a9 378S_more_xnv(pTHX)
463ee0b2 379{
65202027
DS		 380 register NV* xnv;
381 register NV* xnvend;
612f20c3
GS		 382 XPV *ptr;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
386
387 xnv = (NV*) ptr;
65202027
DS		 388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
3280af22 390 PL_xnv_root = xnv;
463ee0b2 391 while (xnv < xnvend) {
65202027 392 *(NV**)xnv = (NV*)(xnv + 1);
463ee0b2
LW		 393 xnv++;
394 }
65202027 395 *(NV**)xnv = 0;
463ee0b2
LW		 396}
397
76e3520e 398STATIC XRV*
cea2e8a9 399S_new_xrv(pTHX)
ed6116ce
LW		 400{
401 XRV* xrv;
cbe51380
GS		 402 LOCK_SV_MUTEX;
403 if (!PL_xrv_root)
404 more_xrv();
405 xrv = PL_xrv_root;
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
407 UNLOCK_SV_MUTEX;
408 return xrv;
ed6116ce
LW		 409}
410
76e3520e 411STATIC void
cea2e8a9 412S_del_xrv(pTHX_ XRV *p)
ed6116ce 413{
cbe51380 414 LOCK_SV_MUTEX;
3280af22
NIS		 415 p->xrv_rv = (SV*)PL_xrv_root;
416 PL_xrv_root = p;
cbe51380 417 UNLOCK_SV_MUTEX;
ed6116ce
LW		 418}
419
cbe51380 420STATIC void
cea2e8a9 421S_more_xrv(pTHX)
ed6116ce 422{
ed6116ce
LW		 423 register XRV* xrv;
424 register XRV* xrvend;
612f20c3
GS		 425 XPV *ptr;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
429
430 xrv = (XRV*) ptr;
ed6116ce 431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
612f20c3
GS		 432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
433 PL_xrv_root = xrv;
ed6116ce
LW		 434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
436 xrv++;
437 }
438 xrv->xrv_rv = 0;
ed6116ce
LW		 439}
440
76e3520e 441STATIC XPV*
cea2e8a9 442S_new_xpv(pTHX)
463ee0b2
LW		 443{
444 XPV* xpv;
cbe51380
GS		 445 LOCK_SV_MUTEX;
446 if (!PL_xpv_root)
447 more_xpv();
448 xpv = PL_xpv_root;
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
450 UNLOCK_SV_MUTEX;
451 return xpv;
463ee0b2
LW		 452}
453
76e3520e 454STATIC void
cea2e8a9 455S_del_xpv(pTHX_ XPV *p)
463ee0b2 456{
cbe51380 457 LOCK_SV_MUTEX;
3280af22
NIS		 458 p->xpv_pv = (char*)PL_xpv_root;
459 PL_xpv_root = p;
cbe51380 460 UNLOCK_SV_MUTEX;
463ee0b2
LW		 461}
462
cbe51380 463STATIC void
cea2e8a9 464S_more_xpv(pTHX)
463ee0b2 465{
463ee0b2
LW		 466 register XPV* xpv;
467 register XPV* xpvend;
612f20c3
GS		 468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
471
463ee0b2 472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
612f20c3 473 PL_xpv_root = ++xpv;
463ee0b2
LW		 474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
476 xpv++;
477 }
478 xpv->xpv_pv = 0;
463ee0b2
LW		 479}
480
932e9ff9
VB		 481STATIC XPVIV*
482S_new_xpviv(pTHX)
483{
484 XPVIV* xpviv;
485 LOCK_SV_MUTEX;
486 if (!PL_xpviv_root)
487 more_xpviv();
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
490 UNLOCK_SV_MUTEX;
491 return xpviv;
492}
493
494STATIC void
495S_del_xpviv(pTHX_ XPVIV *p)
496{
497 LOCK_SV_MUTEX;
498 p->xpv_pv = (char*)PL_xpviv_root;
499 PL_xpviv_root = p;
500 UNLOCK_SV_MUTEX;
501}
502
932e9ff9
VB		 503STATIC void
504S_more_xpviv(pTHX)
505{
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
612f20c3
GS		 508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
511
932e9ff9 512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
612f20c3 513 PL_xpviv_root = ++xpviv;
932e9ff9
VB		 514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
516 xpviv++;
517 }
518 xpviv->xpv_pv = 0;
519}
520
932e9ff9
VB		 521STATIC XPVNV*
522S_new_xpvnv(pTHX)
523{
524 XPVNV* xpvnv;
525 LOCK_SV_MUTEX;
526 if (!PL_xpvnv_root)
527 more_xpvnv();
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
530 UNLOCK_SV_MUTEX;
531 return xpvnv;
532}
533
534STATIC void
535S_del_xpvnv(pTHX_ XPVNV *p)
536{
537 LOCK_SV_MUTEX;
538 p->xpv_pv = (char*)PL_xpvnv_root;
539 PL_xpvnv_root = p;
540 UNLOCK_SV_MUTEX;
541}
542
932e9ff9
VB		 543STATIC void
544S_more_xpvnv(pTHX)
545{
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
612f20c3
GS		 548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
551
932e9ff9 552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
612f20c3 553 PL_xpvnv_root = ++xpvnv;
932e9ff9
VB		 554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
556 xpvnv++;
557 }
558 xpvnv->xpv_pv = 0;
559}
560
932e9ff9
VB		 561STATIC XPVCV*
562S_new_xpvcv(pTHX)
563{
564 XPVCV* xpvcv;
565 LOCK_SV_MUTEX;
566 if (!PL_xpvcv_root)
567 more_xpvcv();
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
570 UNLOCK_SV_MUTEX;
571 return xpvcv;
572}
573
574STATIC void
575S_del_xpvcv(pTHX_ XPVCV *p)
576{
577 LOCK_SV_MUTEX;
578 p->xpv_pv = (char*)PL_xpvcv_root;
579 PL_xpvcv_root = p;
580 UNLOCK_SV_MUTEX;
581}
582
932e9ff9
VB		 583STATIC void
584S_more_xpvcv(pTHX)
585{
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
612f20c3
GS		 588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
591
932e9ff9 592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
612f20c3 593 PL_xpvcv_root = ++xpvcv;
932e9ff9
VB		 594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
596 xpvcv++;
597 }
598 xpvcv->xpv_pv = 0;
599}
600
932e9ff9
VB		 601STATIC XPVAV*
602S_new_xpvav(pTHX)
603{
604 XPVAV* xpvav;
605 LOCK_SV_MUTEX;
606 if (!PL_xpvav_root)
607 more_xpvav();
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
610 UNLOCK_SV_MUTEX;
611 return xpvav;
612}
613
614STATIC void
615S_del_xpvav(pTHX_ XPVAV *p)
616{
617 LOCK_SV_MUTEX;
618 p->xav_array = (char*)PL_xpvav_root;
619 PL_xpvav_root = p;
620 UNLOCK_SV_MUTEX;
621}
622
932e9ff9
VB		 623STATIC void
624S_more_xpvav(pTHX)
625{
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
612f20c3
GS		 628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
631
932e9ff9 632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
612f20c3 633 PL_xpvav_root = ++xpvav;
932e9ff9
VB		 634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
636 xpvav++;
637 }
638 xpvav->xav_array = 0;
639}
640
932e9ff9
VB		 641STATIC XPVHV*
642S_new_xpvhv(pTHX)
643{
644 XPVHV* xpvhv;
645 LOCK_SV_MUTEX;
646 if (!PL_xpvhv_root)
647 more_xpvhv();
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
650 UNLOCK_SV_MUTEX;
651 return xpvhv;
652}
653
654STATIC void
655S_del_xpvhv(pTHX_ XPVHV *p)
656{
657 LOCK_SV_MUTEX;
658 p->xhv_array = (char*)PL_xpvhv_root;
659 PL_xpvhv_root = p;
660 UNLOCK_SV_MUTEX;
661}
662
932e9ff9
VB		 663STATIC void
664S_more_xpvhv(pTHX)
665{
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
612f20c3
GS		 668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
671
932e9ff9 672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
612f20c3 673 PL_xpvhv_root = ++xpvhv;
932e9ff9
VB		 674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
676 xpvhv++;
677 }
678 xpvhv->xhv_array = 0;
679}
680
932e9ff9
VB		 681STATIC XPVMG*
682S_new_xpvmg(pTHX)
683{
684 XPVMG* xpvmg;
685 LOCK_SV_MUTEX;
686 if (!PL_xpvmg_root)
687 more_xpvmg();
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
690 UNLOCK_SV_MUTEX;
691 return xpvmg;
692}
693
694STATIC void
695S_del_xpvmg(pTHX_ XPVMG *p)
696{
697 LOCK_SV_MUTEX;
698 p->xpv_pv = (char*)PL_xpvmg_root;
699 PL_xpvmg_root = p;
700 UNLOCK_SV_MUTEX;
701}
702
932e9ff9
VB		 703STATIC void
704S_more_xpvmg(pTHX)
705{
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
612f20c3
GS		 708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
711
932e9ff9 712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
612f20c3 713 PL_xpvmg_root = ++xpvmg;
932e9ff9
VB		 714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
716 xpvmg++;
717 }
718 xpvmg->xpv_pv = 0;
719}
720
932e9ff9
VB		 721STATIC XPVLV*
722S_new_xpvlv(pTHX)
723{
724 XPVLV* xpvlv;
725 LOCK_SV_MUTEX;
726 if (!PL_xpvlv_root)
727 more_xpvlv();
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
730 UNLOCK_SV_MUTEX;
731 return xpvlv;
732}
733
734STATIC void
735S_del_xpvlv(pTHX_ XPVLV *p)
736{
737 LOCK_SV_MUTEX;
738 p->xpv_pv = (char*)PL_xpvlv_root;
739 PL_xpvlv_root = p;
740 UNLOCK_SV_MUTEX;
741}
742
932e9ff9
VB		 743STATIC void
744S_more_xpvlv(pTHX)
745{
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
612f20c3
GS		 748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
751
932e9ff9 752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
612f20c3 753 PL_xpvlv_root = ++xpvlv;
932e9ff9
VB		 754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
756 xpvlv++;
757 }
758 xpvlv->xpv_pv = 0;
759}
760
932e9ff9
VB		 761STATIC XPVBM*
762S_new_xpvbm(pTHX)
763{
764 XPVBM* xpvbm;
765 LOCK_SV_MUTEX;
766 if (!PL_xpvbm_root)
767 more_xpvbm();
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
770 UNLOCK_SV_MUTEX;
771 return xpvbm;
772}
773
774STATIC void
775S_del_xpvbm(pTHX_ XPVBM *p)
776{
777 LOCK_SV_MUTEX;
778 p->xpv_pv = (char*)PL_xpvbm_root;
779 PL_xpvbm_root = p;
780 UNLOCK_SV_MUTEX;
781}
782
932e9ff9
VB		 783STATIC void
784S_more_xpvbm(pTHX)
785{
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
612f20c3
GS		 788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
791
932e9ff9 792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
612f20c3 793 PL_xpvbm_root = ++xpvbm;
932e9ff9
VB		 794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
796 xpvbm++;
797 }
798 xpvbm->xpv_pv = 0;
799}
800
d33b2eba
GS		 801#ifdef LEAKTEST
802# define my_safemalloc(s) (void*)safexmalloc(717,s)
803# define my_safefree(p) safexfree((char*)p)
804#else
805# define my_safemalloc(s) (void*)safemalloc(s)
806# define my_safefree(p) safefree((char*)p)
807#endif
463ee0b2 808
d33b2eba 809#ifdef PURIFY
463ee0b2 810
d33b2eba
GS		 811#define new_XIV() my_safemalloc(sizeof(XPVIV))
812#define del_XIV(p) my_safefree(p)
ed6116ce 813
d33b2eba
GS		 814#define new_XNV() my_safemalloc(sizeof(XPVNV))
815#define del_XNV(p) my_safefree(p)
463ee0b2 816
d33b2eba
GS		 817#define new_XRV() my_safemalloc(sizeof(XRV))
818#define del_XRV(p) my_safefree(p)
8c52afec 819
d33b2eba
GS		 820#define new_XPV() my_safemalloc(sizeof(XPV))
821#define del_XPV(p) my_safefree(p)
9b94d1dd 822
d33b2eba
GS		 823#define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824#define del_XPVIV(p) my_safefree(p)
932e9ff9 825
d33b2eba
GS		 826#define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827#define del_XPVNV(p) my_safefree(p)
932e9ff9 828
d33b2eba
GS		 829#define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830#define del_XPVCV(p) my_safefree(p)
932e9ff9 831
d33b2eba
GS		 832#define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833#define del_XPVAV(p) my_safefree(p)
834
835#define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836#define del_XPVHV(p) my_safefree(p)
1c846c1f 837
d33b2eba
GS		 838#define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839#define del_XPVMG(p) my_safefree(p)
840
841#define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842#define del_XPVLV(p) my_safefree(p)
843
844#define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845#define del_XPVBM(p) my_safefree(p)
846
847#else /* !PURIFY */
848
849#define new_XIV() (void*)new_xiv()
850#define del_XIV(p) del_xiv((XPVIV*) p)
851
852#define new_XNV() (void*)new_xnv()
853#define del_XNV(p) del_xnv((XPVNV*) p)
9b94d1dd 854
d33b2eba
GS		 855#define new_XRV() (void*)new_xrv()
856#define del_XRV(p) del_xrv((XRV*) p)
9b94d1dd 857
d33b2eba
GS		 858#define new_XPV() (void*)new_xpv()
859#define del_XPV(p) del_xpv((XPV *)p)
860
861#define new_XPVIV() (void*)new_xpviv()
862#define del_XPVIV(p) del_xpviv((XPVIV *)p)
863
864#define new_XPVNV() (void*)new_xpvnv()
865#define del_XPVNV(p) del_xpvnv((XPVNV *)p)
866
867#define new_XPVCV() (void*)new_xpvcv()
868#define del_XPVCV(p) del_xpvcv((XPVCV *)p)
869
870#define new_XPVAV() (void*)new_xpvav()
871#define del_XPVAV(p) del_xpvav((XPVAV *)p)
872
873#define new_XPVHV() (void*)new_xpvhv()
874#define del_XPVHV(p) del_xpvhv((XPVHV *)p)
1c846c1f 875
d33b2eba
GS		 876#define new_XPVMG() (void*)new_xpvmg()
877#define del_XPVMG(p) del_xpvmg((XPVMG *)p)
878
879#define new_XPVLV() (void*)new_xpvlv()
880#define del_XPVLV(p) del_xpvlv((XPVLV *)p)
881
882#define new_XPVBM() (void*)new_xpvbm()
883#define del_XPVBM(p) del_xpvbm((XPVBM *)p)
884
885#endif /* PURIFY */
9b94d1dd 886
d33b2eba
GS		 887#define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888#define del_XPVGV(p) my_safefree(p)
1c846c1f 889
d33b2eba
GS		 890#define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891#define del_XPVFM(p) my_safefree(p)
1c846c1f 892
d33b2eba
GS		 893#define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894#define del_XPVIO(p) my_safefree(p)
8990e307 895
954c1994
GS		 896/*
897=for apidoc sv_upgrade
898
899Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
900C<svtype>.
901
902=cut
903*/
904
79072805 905bool
864dbfa3 906Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
79072805
LW		 907{
908 char* pv;
909 U32 cur;
910 U32 len;
a0d0e21e 911 IV iv;
65202027 912 NV nv;
79072805
LW		 913 MAGIC* magic;
914 HV* stash;
915
f130fd45
NIS		 916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
917 sv_force_normal(sv);
918 }
919
79072805
LW		 920 if (SvTYPE(sv) == mt)
921 return TRUE;
922
a5f75d66
AD		 923 if (mt < SVt_PVIV)
924 (void)SvOOK_off(sv);
925
79072805
LW		 926 switch (SvTYPE(sv)) {
927 case SVt_NULL:
928 pv = 0;
929 cur = 0;
930 len = 0;
931 iv = 0;
932 nv = 0.0;
933 magic = 0;
934 stash = 0;
935 break;
79072805
LW		 936 case SVt_IV:
937 pv = 0;
938 cur = 0;
939 len = 0;
463ee0b2 940 iv = SvIVX(sv);
65202027 941 nv = (NV)SvIVX(sv);
79072805
LW		 942 del_XIV(SvANY(sv));
943 magic = 0;
944 stash = 0;
ed6116ce 945 if (mt == SVt_NV)
463ee0b2 946 mt = SVt_PVNV;
ed6116ce
LW		 947 else if (mt < SVt_PVIV)
948 mt = SVt_PVIV;
79072805
LW		 949 break;
950 case SVt_NV:
951 pv = 0;
952 cur = 0;
953 len = 0;
463ee0b2 954 nv = SvNVX(sv);
1bd302c3 955 iv = I_V(nv);
79072805
LW		 956 magic = 0;
957 stash = 0;
958 del_XNV(SvANY(sv));
959 SvANY(sv) = 0;
ed6116ce 960 if (mt < SVt_PVNV)
79072805
LW		 961 mt = SVt_PVNV;
962 break;
ed6116ce
LW		 963 case SVt_RV:
964 pv = (char*)SvRV(sv);
965 cur = 0;
966 len = 0;
56431972
RB		 967 iv = PTR2IV(pv);
968 nv = PTR2NV(pv);
ed6116ce
LW		 969 del_XRV(SvANY(sv));
970 magic = 0;
971 stash = 0;
972 break;
79072805 973 case SVt_PV:
463ee0b2 974 pv = SvPVX(sv);
79072805
LW		 975 cur = SvCUR(sv);
976 len = SvLEN(sv);
977 iv = 0;
978 nv = 0.0;
979 magic = 0;
980 stash = 0;
981 del_XPV(SvANY(sv));
748a9306
LW		 982 if (mt <= SVt_IV)
983 mt = SVt_PVIV;
984 else if (mt == SVt_NV)
985 mt = SVt_PVNV;
79072805
LW		 986 break;
987 case SVt_PVIV:
463ee0b2 988 pv = SvPVX(sv);
79072805
LW		 989 cur = SvCUR(sv);
990 len = SvLEN(sv);
463ee0b2 991 iv = SvIVX(sv);
79072805
LW		 992 nv = 0.0;
993 magic = 0;
994 stash = 0;
995 del_XPVIV(SvANY(sv));
996 break;
997 case SVt_PVNV:
463ee0b2 998 pv = SvPVX(sv);
79072805
LW		 999 cur = SvCUR(sv);
1000 len = SvLEN(sv);
463ee0b2
LW		 1001 iv = SvIVX(sv);
1002 nv = SvNVX(sv);
79072805
LW		 1003 magic = 0;
1004 stash = 0;
1005 del_XPVNV(SvANY(sv));
1006 break;
1007 case SVt_PVMG:
463ee0b2 1008 pv = SvPVX(sv);
79072805
LW		 1009 cur = SvCUR(sv);
1010 len = SvLEN(sv);
463ee0b2
LW		 1011 iv = SvIVX(sv);
1012 nv = SvNVX(sv);
79072805
LW		 1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1016 break;
1017 default:
cea2e8a9 1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
79072805
LW		 1019 }
1020
1021 switch (mt) {
1022 case SVt_NULL:
cea2e8a9 1023 Perl_croak(aTHX_ "Can't upgrade to undef");
79072805
LW		 1024 case SVt_IV:
1025 SvANY(sv) = new_XIV();
463ee0b2 1026 SvIVX(sv) = iv;
79072805
LW		 1027 break;
1028 case SVt_NV:
1029 SvANY(sv) = new_XNV();
463ee0b2 1030 SvNVX(sv) = nv;
79072805 1031 break;
ed6116ce
LW		 1032 case SVt_RV:
1033 SvANY(sv) = new_XRV();
1034 SvRV(sv) = (SV*)pv;
ed6116ce 1035 break;
79072805
LW		 1036 case SVt_PV:
1037 SvANY(sv) = new_XPV();
463ee0b2 1038 SvPVX(sv) = pv;
79072805
LW		 1039 SvCUR(sv) = cur;
1040 SvLEN(sv) = len;
1041 break;
1042 case SVt_PVIV:
1043 SvANY(sv) = new_XPVIV();
463ee0b2 1044 SvPVX(sv) = pv;
79072805
LW		 1045 SvCUR(sv) = cur;
1046 SvLEN(sv) = len;
463ee0b2 1047 SvIVX(sv) = iv;
79072805 1048 if (SvNIOK(sv))
a0d0e21e 1049 (void)SvIOK_on(sv);
79072805
LW		 1050 SvNOK_off(sv);
1051 break;
1052 case SVt_PVNV:
1053 SvANY(sv) = new_XPVNV();
463ee0b2 1054 SvPVX(sv) = pv;
79072805
LW		 1055 SvCUR(sv) = cur;
1056 SvLEN(sv) = len;
463ee0b2
LW		 1057 SvIVX(sv) = iv;
1058 SvNVX(sv) = nv;
79072805
LW		 1059 break;
1060 case SVt_PVMG:
1061 SvANY(sv) = new_XPVMG();
463ee0b2 1062 SvPVX(sv) = pv;
79072805
LW		 1063 SvCUR(sv) = cur;
1064 SvLEN(sv) = len;
463ee0b2
LW		 1065 SvIVX(sv) = iv;
1066 SvNVX(sv) = nv;
79072805
LW		 1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1069 break;
1070 case SVt_PVLV:
1071 SvANY(sv) = new_XPVLV();
463ee0b2 1072 SvPVX(sv) = pv;
79072805
LW		 1073 SvCUR(sv) = cur;
1074 SvLEN(sv) = len;
463ee0b2
LW		 1075 SvIVX(sv) = iv;
1076 SvNVX(sv) = nv;
79072805
LW		 1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1079 LvTARGOFF(sv) = 0;
1080 LvTARGLEN(sv) = 0;
1081 LvTARG(sv) = 0;
1082 LvTYPE(sv) = 0;
1083 break;
1084 case SVt_PVAV:
1085 SvANY(sv) = new_XPVAV();
463ee0b2
LW		 1086 if (pv)
1087 Safefree(pv);
2304df62 1088 SvPVX(sv) = 0;
d1bf51dd 1089 AvMAX(sv) = -1;
93965878 1090 AvFILLp(sv) = -1;
463ee0b2
LW		 1091 SvIVX(sv) = 0;
1092 SvNVX(sv) = 0.0;
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1095 AvALLOC(sv) = 0;
79072805
LW		 1096 AvARYLEN(sv) = 0;
1097 AvFLAGS(sv) = 0;
1098 break;
1099 case SVt_PVHV:
1100 SvANY(sv) = new_XPVHV();
463ee0b2
LW		 1101 if (pv)
1102 Safefree(pv);
1103 SvPVX(sv) = 0;
1104 HvFILL(sv) = 0;
1105 HvMAX(sv) = 0;
1106 HvKEYS(sv) = 0;
1107 SvNVX(sv) = 0.0;
79072805
LW		 1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
79072805
LW		 1110 HvRITER(sv) = 0;
1111 HvEITER(sv) = 0;
1112 HvPMROOT(sv) = 0;
1113 HvNAME(sv) = 0;
79072805
LW		 1114 break;
1115 case SVt_PVCV:
1116 SvANY(sv) = new_XPVCV();
748a9306 1117 Zero(SvANY(sv), 1, XPVCV);
463ee0b2 1118 SvPVX(sv) = pv;
79072805
LW		 1119 SvCUR(sv) = cur;
1120 SvLEN(sv) = len;
463ee0b2
LW		 1121 SvIVX(sv) = iv;
1122 SvNVX(sv) = nv;
79072805
LW		 1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
79072805
LW		 1125 break;
1126 case SVt_PVGV:
1127 SvANY(sv) = new_XPVGV();
463ee0b2 1128 SvPVX(sv) = pv;
79072805
LW		 1129 SvCUR(sv) = cur;
1130 SvLEN(sv) = len;
463ee0b2
LW		 1131 SvIVX(sv) = iv;
1132 SvNVX(sv) = nv;
79072805
LW		 1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
93a17b20 1135 GvGP(sv) = 0;
79072805
LW		 1136 GvNAME(sv) = 0;
1137 GvNAMELEN(sv) = 0;
1138 GvSTASH(sv) = 0;
a5f75d66 1139 GvFLAGS(sv) = 0;
79072805
LW		 1140 break;
1141 case SVt_PVBM:
1142 SvANY(sv) = new_XPVBM();
463ee0b2 1143 SvPVX(sv) = pv;
79072805
LW		 1144 SvCUR(sv) = cur;
1145 SvLEN(sv) = len;
463ee0b2
LW		 1146 SvIVX(sv) = iv;
1147 SvNVX(sv) = nv;
79072805
LW		 1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1150 BmRARE(sv) = 0;
1151 BmUSEFUL(sv) = 0;
1152 BmPREVIOUS(sv) = 0;
1153 break;
1154 case SVt_PVFM:
1155 SvANY(sv) = new_XPVFM();
748a9306 1156 Zero(SvANY(sv), 1, XPVFM);
463ee0b2 1157 SvPVX(sv) = pv;
79072805
LW		 1158 SvCUR(sv) = cur;
1159 SvLEN(sv) = len;
463ee0b2
LW		 1160 SvIVX(sv) = iv;
1161 SvNVX(sv) = nv;
79072805
LW		 1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
79072805 1164 break;
8990e307
LW		 1165 case SVt_PVIO:
1166 SvANY(sv) = new_XPVIO();
748a9306 1167 Zero(SvANY(sv), 1, XPVIO);
8990e307
LW		 1168 SvPVX(sv) = pv;
1169 SvCUR(sv) = cur;
1170 SvLEN(sv) = len;
1171 SvIVX(sv) = iv;
1172 SvNVX(sv) = nv;
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
85e6fe83 1175 IoPAGE_LEN(sv) = 60;
8990e307
LW		 1176 break;
1177 }
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1179 SvFLAGS(sv) |= mt;
79072805
LW		 1180 return TRUE;
1181}
1182
79072805 1183int
864dbfa3 1184Perl_sv_backoff(pTHX_ register SV *sv)
79072805
LW		 1185{
1186 assert(SvOOK(sv));
463ee0b2
LW		 1187 if (SvIVX(sv)) {
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
79072805 1191 SvIV_set(sv, 0);
463ee0b2 1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
79072805
LW		 1193 }
1194 SvFLAGS(sv) &= ~SVf_OOK;
a0d0e21e 1195 return 0;
79072805
LW		 1196}
1197
954c1994
GS		 1198/*
1199=for apidoc sv_grow
1200
1201Expands the character buffer in the SV. This will use C<sv_unref> and will
1202upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1203Use C<SvGROW>.
1204
1205=cut
1206*/
1207
79072805 1208char *
864dbfa3 1209Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
79072805
LW		 1210{
1211 register char *s;
1212
55497cff 1213#ifdef HAS_64K_LIMIT
79072805 1214 if (newlen >= 0x10000) {
1d7c1841
GS		 1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
79072805
LW		 1217 my_exit(1);
1218 }
55497cff 1219#endif /* HAS_64K_LIMIT */
a0d0e21e
LW		 1220 if (SvROK(sv))
1221 sv_unref(sv);
79072805
LW		 1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
463ee0b2 1224 s = SvPVX(sv);
79072805
LW		 1225 }
1226 else if (SvOOK(sv)) { /* pv is offset? */
1227 sv_backoff(sv);
463ee0b2 1228 s = SvPVX(sv);
79072805
LW		 1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
c6f8c383
GA		 1231#ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1233 newlen = 0xFFFF;
1234#endif
79072805
LW		 1235 }
1236 else
463ee0b2 1237 s = SvPVX(sv);
79072805 1238 if (newlen > SvLEN(sv)) { /* need more room? */
8d6dde3e 1239 if (SvLEN(sv) && s) {
f5a32c7f 1240#if defined(MYMALLOC) && !defined(LEAKTEST)
8d6dde3e
IZ		 1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1242 if (newlen <= l) {
1243 SvLEN_set(sv, l);
1244 return s;
1245 } else
c70c8a0a 1246#endif
79072805 1247 Renew(s,newlen,char);
8d6dde3e 1248 }
79072805
LW		 1249 else
1250 New(703,s,newlen,char);
1251 SvPV_set(sv, s);
1252 SvLEN_set(sv, newlen);
1253 }
1254 return s;
1255}
1256
954c1994
GS		 1257/*
1258=for apidoc sv_setiv
1259
1260Copies an integer into the given SV. Does not handle 'set' magic. See
1261C<sv_setiv_mg>.
1262
1263=cut
1264*/
1265
79072805 1266void
864dbfa3 1267Perl_sv_setiv(pTHX_ register SV *sv, IV i)
79072805 1268{
2213622d 1269 SV_CHECK_THINKFIRST(sv);
463ee0b2
LW		 1270 switch (SvTYPE(sv)) {
1271 case SVt_NULL:
79072805 1272 sv_upgrade(sv, SVt_IV);
463ee0b2
LW		 1273 break;
1274 case SVt_NV:
1275 sv_upgrade(sv, SVt_PVNV);
1276 break;
ed6116ce 1277 case SVt_RV:
463ee0b2 1278 case SVt_PV:
79072805 1279 sv_upgrade(sv, SVt_PVIV);
463ee0b2 1280 break;
a0d0e21e
LW		 1281
1282 case SVt_PVGV:
a0d0e21e
LW		 1283 case SVt_PVAV:
1284 case SVt_PVHV:
1285 case SVt_PVCV:
1286 case SVt_PVFM:
1287 case SVt_PVIO:
11343788
MB		 1288 {
1289 dTHR;
cea2e8a9 1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
22c35a8c 1291 PL_op_desc[PL_op->op_type]);
11343788 1292 }
463ee0b2 1293 }
a0d0e21e 1294 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1295 SvIVX(sv) = i;
463ee0b2 1296 SvTAINT(sv);
79072805
LW		 1297}
1298
954c1994
GS		 1299/*
1300=for apidoc sv_setiv_mg
1301
1302Like C<sv_setiv>, but also handles 'set' magic.
1303
1304=cut
1305*/
1306
79072805 1307void
864dbfa3 1308Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1309{
1310 sv_setiv(sv,i);
1311 SvSETMAGIC(sv);
1312}
1313
954c1994
GS		 1314/*
1315=for apidoc sv_setuv
1316
1317Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1318See C<sv_setuv_mg>.
1319
1320=cut
1321*/
1322
ef50df4b 1323void
864dbfa3 1324Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1325{
25da4f38
IZ		 1326 sv_setiv(sv, 0);
1327 SvIsUV_on(sv);
1328 SvUVX(sv) = u;
55497cff 1329}
1330
954c1994
GS		 1331/*
1332=for apidoc sv_setuv_mg
1333
1334Like C<sv_setuv>, but also handles 'set' magic.
1335
1336=cut
1337*/
1338
55497cff 1339void
864dbfa3 1340Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b
GS		 1341{
1342 sv_setuv(sv,u);
1343 SvSETMAGIC(sv);
1344}
1345
954c1994
GS		 1346/*
1347=for apidoc sv_setnv
1348
1349Copies a double into the given SV. Does not handle 'set' magic. See
1350C<sv_setnv_mg>.
1351
1352=cut
1353*/
1354
ef50df4b 1355void
65202027 1356Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1357{
2213622d 1358 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1359 switch (SvTYPE(sv)) {
1360 case SVt_NULL:
1361 case SVt_IV:
79072805 1362 sv_upgrade(sv, SVt_NV);
a0d0e21e 1363 break;
a0d0e21e
LW		 1364 case SVt_RV:
1365 case SVt_PV:
1366 case SVt_PVIV:
79072805 1367 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1368 break;
827b7e14 1369
a0d0e21e 1370 case SVt_PVGV:
a0d0e21e
LW		 1371 case SVt_PVAV:
1372 case SVt_PVHV:
1373 case SVt_PVCV:
1374 case SVt_PVFM:
1375 case SVt_PVIO:
11343788
MB		 1376 {
1377 dTHR;
cea2e8a9 1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
22c35a8c 1379 PL_op_name[PL_op->op_type]);
11343788 1380 }
79072805 1381 }
463ee0b2 1382 SvNVX(sv) = num;
a0d0e21e 1383 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1384 SvTAINT(sv);
79072805
LW		 1385}
1386
954c1994
GS		 1387/*
1388=for apidoc sv_setnv_mg
1389
1390Like C<sv_setnv>, but also handles 'set' magic.
1391
1392=cut
1393*/
1394
ef50df4b 1395void
65202027 1396Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1397{
1398 sv_setnv(sv,num);
1399 SvSETMAGIC(sv);
1400}
1401
76e3520e 1402STATIC void
cea2e8a9 1403S_not_a_number(pTHX_ SV *sv)
a0d0e21e 1404{
11343788 1405 dTHR;
a0d0e21e
LW		 1406 char tmpbuf[64];
1407 char *d = tmpbuf;
1408 char *s;
dc28f22b
GA		 1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
a0d0e21e 1412
dc28f22b 1413 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1414 int ch = *s & 0xFF;
1415 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1416 *d++ = 'M';
1417 *d++ = '-';
1418 ch &= 127;
1419 }
bbce6d69 1420 if (ch == '\n') {
1421 *d++ = '\\';
1422 *d++ = 'n';
1423 }
1424 else if (ch == '\r') {
1425 *d++ = '\\';
1426 *d++ = 'r';
1427 }
1428 else if (ch == '\f') {
1429 *d++ = '\\';
1430 *d++ = 'f';
1431 }
1432 else if (ch == '\\') {
1433 *d++ = '\\';
1434 *d++ = '\\';
1435 }
1436 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1437 *d++ = ch;
1438 else {
1439 *d++ = '^';
bbce6d69 1440 *d++ = toCTRL(ch);
a0d0e21e
LW		 1441 }
1442 }
1443 if (*s) {
1444 *d++ = '.';
1445 *d++ = '.';
1446 *d++ = '.';
1447 }
1448 *d = '\0';
1449
533c011a 1450 if (PL_op)
42d38218
MS		 1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
a0d0e21e 1454 else
42d38218
MS		 1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1457}
1458
cf2093f6 1459/* the number can be converted to integer with atol() or atoll() */
25da4f38
IZ		 1460#define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461#define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462#define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463#define IS_NUMBER_NEG 0x08 /* not good to cache UV */
300aed98 1464#define IS_NUMBER_INFINITY 0x10 /* this is big */
25da4f38
IZ		 1465
1466/* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1468
a0d0e21e 1469IV
864dbfa3 1470Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1471{
1472 if (!sv)
1473 return 0;
8990e307 1474 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1475 mg_get(sv);
1476 if (SvIOKp(sv))
1477 return SvIVX(sv);
748a9306 1478 if (SvNOKp(sv)) {
25da4f38 1479 return I_V(SvNVX(sv));
748a9306 1480 }
36477c24 1481 if (SvPOKp(sv) && SvLEN(sv))
1482 return asIV(sv);
3fe9a6f1 1483 if (!SvROK(sv)) {
d008e5eb 1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1485 dTHR;
d008e5eb 1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1487 report_uninit();
c6ee37c5 1488 }
36477c24 1489 return 0;
3fe9a6f1 1490 }
463ee0b2 1491 }
ed6116ce 1492 if (SvTHINKFIRST(sv)) {
a0d0e21e 1493 if (SvROK(sv)) {
a0d0e21e 1494 SV* tmpstr;
1554e226
DC		 1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1497 return SvIV(tmpstr);
56431972 1498 return PTR2IV(SvRV(sv));
a0d0e21e 1499 }
0336b60e
IZ		 1500 if (SvREADONLY(sv) && !SvOK(sv)) {
1501 dTHR;
1502 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1503 report_uninit();
ed6116ce
LW		 1504 return 0;
1505 }
79072805 1506 }
25da4f38
IZ		 1507 if (SvIOKp(sv)) {
1508 if (SvIsUV(sv)) {
1509 return (IV)(SvUVX(sv));
1510 }
1511 else {
1512 return SvIVX(sv);
1513 }
463ee0b2 1514 }
748a9306 1515 if (SvNOKp(sv)) {
25da4f38
IZ		 1516 /* We can cache the IV/UV value even if it not good enough
1517 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1518 * NV over IV/UV.
25da4f38
IZ		 1519 */
1520
1521 if (SvTYPE(sv) == SVt_NV)
1522 sv_upgrade(sv, SVt_PVNV);
1523
a5f75d66 1524 (void)SvIOK_on(sv);
65202027 1525 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
748a9306 1526 SvIVX(sv) = I_V(SvNVX(sv));
25da4f38 1527 else {
ff68c719 1528 SvUVX(sv) = U_V(SvNVX(sv));
25da4f38
IZ		 1529 SvIsUV_on(sv);
1530 ret_iv_max:
1c846c1f 1531 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1532 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1533 PTR2UV(sv),
57def98f
JH		 1534 SvUVX(sv),
1535 SvUVX(sv)));
25da4f38
IZ		 1536 return (IV)SvUVX(sv);
1537 }
748a9306
LW		 1538 }
1539 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1540 I32 numtype = looks_like_number(sv);
1541
1542 /* We want to avoid a possible problem when we cache an IV which
1543 may be later translated to an NV, and the resulting NV is not
1544 the translation of the initial data.
1c846c1f 1545
25da4f38
IZ		 1546 This means that if we cache such an IV, we need to cache the
1547 NV as well. Moreover, we trade speed for space, and do not
1548 cache the NV if not needed.
1549 */
1550 if (numtype & IS_NUMBER_NOT_IV) {
1551 /* May be not an integer. Need to cache NV if we cache IV
1552 * - otherwise future conversion to NV will be wrong. */
65202027 1553 NV d;
25da4f38 1554
097ee67d 1555 d = Atof(SvPVX(sv));
25da4f38
IZ		 1556
1557 if (SvTYPE(sv) < SVt_PVNV)
1558 sv_upgrade(sv, SVt_PVNV);
1559 SvNVX(sv) = d;
1560 (void)SvNOK_on(sv);
1561 (void)SvIOK_on(sv);
65202027 1562#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1563 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1564 PTR2UV(sv), SvNVX(sv)));
65202027 1565#else
1d7c1841
GS		 1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1567 PTR2UV(sv), SvNVX(sv)));
65202027 1568#endif
65202027 1569 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
25da4f38
IZ		 1570 SvIVX(sv) = I_V(SvNVX(sv));
1571 else {
1572 SvUVX(sv) = U_V(SvNVX(sv));
1573 SvIsUV_on(sv);
1574 goto ret_iv_max;
1575 }
1576 }
0a3ece55
MG		 1577 else { /* The NV may be reconstructed from IV - safe to cache IV,
1578 which may be calculated by atol(). */
25da4f38
IZ		 1579 if (SvTYPE(sv) < SVt_PVIV)
1580 sv_upgrade(sv, SVt_PVIV);
25da4f38 1581 (void)SvIOK_on(sv);
0a3ece55
MG		 1582 SvIVX(sv) = Atol(SvPVX(sv));
1583 if (! numtype && ckWARN(WARN_NUMERIC))
25da4f38
IZ		 1584 not_a_number(sv);
1585 }
93a17b20 1586 }
79072805 1587 else {
11343788 1588 dTHR;
599cee73 1589 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1590 report_uninit();
25da4f38
IZ		 1591 if (SvTYPE(sv) < SVt_IV)
1592 /* Typically the caller expects that sv_any is not NULL now. */
1593 sv_upgrade(sv, SVt_IV);
a0d0e21e 1594 return 0;
79072805 1595 }
1d7c1841
GS		 1596 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1597 PTR2UV(sv),SvIVX(sv)));
25da4f38 1598 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1599}
1600
ff68c719 1601UV
864dbfa3 1602Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1603{
1604 if (!sv)
1605 return 0;
1606 if (SvGMAGICAL(sv)) {
1607 mg_get(sv);
1608 if (SvIOKp(sv))
1609 return SvUVX(sv);
1610 if (SvNOKp(sv))
1611 return U_V(SvNVX(sv));
36477c24 1612 if (SvPOKp(sv) && SvLEN(sv))
1613 return asUV(sv);
3fe9a6f1 1614 if (!SvROK(sv)) {
d008e5eb 1615 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1616 dTHR;
d008e5eb 1617 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1618 report_uninit();
c6ee37c5 1619 }
36477c24 1620 return 0;
3fe9a6f1 1621 }
ff68c719 1622 }
1623 if (SvTHINKFIRST(sv)) {
1624 if (SvROK(sv)) {
ff68c719 1625 SV* tmpstr;
1554e226
DC		 1626 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1627 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1628 return SvUV(tmpstr);
56431972 1629 return PTR2UV(SvRV(sv));
ff68c719 1630 }
0336b60e
IZ		 1631 if (SvREADONLY(sv) && !SvOK(sv)) {
1632 dTHR;
1633 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1634 report_uninit();
ff68c719 1635 return 0;
1636 }
1637 }
25da4f38
IZ		 1638 if (SvIOKp(sv)) {
1639 if (SvIsUV(sv)) {
1640 return SvUVX(sv);
1641 }
1642 else {
1643 return (UV)SvIVX(sv);
1644 }
ff68c719 1645 }
1646 if (SvNOKp(sv)) {
25da4f38
IZ		 1647 /* We can cache the IV/UV value even if it not good enough
1648 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1649 * NV over IV/UV.
25da4f38
IZ		 1650 */
1651 if (SvTYPE(sv) == SVt_NV)
1652 sv_upgrade(sv, SVt_PVNV);
ff68c719 1653 (void)SvIOK_on(sv);
25da4f38
IZ		 1654 if (SvNVX(sv) >= -0.5) {
1655 SvIsUV_on(sv);
1656 SvUVX(sv) = U_V(SvNVX(sv));
1657 }
1658 else {
1659 SvIVX(sv) = I_V(SvNVX(sv));
1660 ret_zero:
1c846c1f 1661 DEBUG_c(PerlIO_printf(Perl_debug_log,
07270b1a 1662 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
57def98f
JH		 1663 PTR2UV(sv),
1664 SvIVX(sv),
1665 (IV)(UV)SvIVX(sv)));
25da4f38
IZ		 1666 return (UV)SvIVX(sv);
1667 }
ff68c719 1668 }
1669 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1670 I32 numtype = looks_like_number(sv);
1671
1672 /* We want to avoid a possible problem when we cache a UV which
1673 may be later translated to an NV, and the resulting NV is not
1674 the translation of the initial data.
1c846c1f 1675
25da4f38
IZ		 1676 This means that if we cache such a UV, we need to cache the
1677 NV as well. Moreover, we trade speed for space, and do not
1678 cache the NV if not needed.
1679 */
1680 if (numtype & IS_NUMBER_NOT_IV) {
1681 /* May be not an integer. Need to cache NV if we cache IV
1682 * - otherwise future conversion to NV will be wrong. */
65202027 1683 NV d;
25da4f38 1684
cf2093f6 1685 d = Atof(SvPVX(sv));
25da4f38
IZ		 1686
1687 if (SvTYPE(sv) < SVt_PVNV)
1688 sv_upgrade(sv, SVt_PVNV);
1689 SvNVX(sv) = d;
1690 (void)SvNOK_on(sv);
1691 (void)SvIOK_on(sv);
65202027 1692#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1693 DEBUG_c(PerlIO_printf(Perl_debug_log,
1694 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1695 PTR2UV(sv), SvNVX(sv)));
65202027 1696#else
1d7c1841
GS		 1697 DEBUG_c(PerlIO_printf(Perl_debug_log,
1698 "0x%"UVxf" 2nv(%g)\n",
1699 PTR2UV(sv), SvNVX(sv)));
65202027 1700#endif
25da4f38
IZ		 1701 if (SvNVX(sv) < -0.5) {
1702 SvIVX(sv) = I_V(SvNVX(sv));
1703 goto ret_zero;
1704 } else {
1705 SvUVX(sv) = U_V(SvNVX(sv));
1706 SvIsUV_on(sv);
1707 }
1708 }
1709 else if (numtype & IS_NUMBER_NEG) {
1710 /* The NV may be reconstructed from IV - safe to cache IV,
1711 which may be calculated by atol(). */
1712 if (SvTYPE(sv) == SVt_PV)
1713 sv_upgrade(sv, SVt_PVIV);
1714 (void)SvIOK_on(sv);
cf2093f6 1715 SvIVX(sv) = (IV)Atol(SvPVX(sv));
25da4f38
IZ		 1716 }
1717 else if (numtype) { /* Non-negative */
1718 /* The NV may be reconstructed from UV - safe to cache UV,
1719 which may be calculated by strtoul()/atol. */
1720 if (SvTYPE(sv) == SVt_PV)
1721 sv_upgrade(sv, SVt_PVIV);
1722 (void)SvIOK_on(sv);
1723 (void)SvIsUV_on(sv);
1724#ifdef HAS_STRTOUL
cf2093f6 1725 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
25da4f38
IZ		 1726#else /* no atou(), but we know the number fits into IV... */
1727 /* The only problem may be if it is negative... */
cf2093f6 1728 SvUVX(sv) = (UV)Atol(SvPVX(sv));
25da4f38
IZ		 1729#endif
1730 }
1731 else { /* Not a number. Cache 0. */
1732 dTHR;
1733
1734 if (SvTYPE(sv) < SVt_PVIV)
1735 sv_upgrade(sv, SVt_PVIV);
25da4f38
IZ		 1736 (void)SvIOK_on(sv);
1737 (void)SvIsUV_on(sv);
7b9e3c00
GS		 1738 SvUVX(sv) = 0; /* We assume that 0s have the
1739 same bitmap in IV and UV. */
25da4f38
IZ		 1740 if (ckWARN(WARN_NUMERIC))
1741 not_a_number(sv);
1742 }
ff68c719 1743 }
1744 else {
d008e5eb 1745 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1746 dTHR;
d008e5eb 1747 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1748 report_uninit();
c6ee37c5 1749 }
25da4f38
IZ		 1750 if (SvTYPE(sv) < SVt_IV)
1751 /* Typically the caller expects that sv_any is not NULL now. */
1752 sv_upgrade(sv, SVt_IV);
ff68c719 1753 return 0;
1754 }
25da4f38 1755
1d7c1841
GS		 1756 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1757 PTR2UV(sv),SvUVX(sv)));
25da4f38 1758 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 1759}
1760
65202027 1761NV
864dbfa3 1762Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 1763{
1764 if (!sv)
1765 return 0.0;
8990e307 1766 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1767 mg_get(sv);
1768 if (SvNOKp(sv))
1769 return SvNVX(sv);
a0d0e21e 1770 if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1771 dTHR;
599cee73 1772 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1773 not_a_number(sv);
097ee67d 1774 return Atof(SvPVX(sv));
a0d0e21e 1775 }
25da4f38 1776 if (SvIOKp(sv)) {
1c846c1f 1777 if (SvIsUV(sv))
65202027 1778 return (NV)SvUVX(sv);
25da4f38 1779 else
65202027 1780 return (NV)SvIVX(sv);
25da4f38 1781 }
16d20bd9 1782 if (!SvROK(sv)) {
d008e5eb 1783 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1784 dTHR;
d008e5eb 1785 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1786 report_uninit();
c6ee37c5 1787 }
16d20bd9
AD		 1788 return 0;
1789 }
463ee0b2 1790 }
ed6116ce 1791 if (SvTHINKFIRST(sv)) {
a0d0e21e 1792 if (SvROK(sv)) {
a0d0e21e 1793 SV* tmpstr;
1554e226
DC		 1794 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1795 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1796 return SvNV(tmpstr);
56431972 1797 return PTR2NV(SvRV(sv));
a0d0e21e 1798 }
0336b60e 1799 if (SvREADONLY(sv) && !SvOK(sv)) {
d008e5eb 1800 dTHR;
599cee73 1801 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1802 report_uninit();
ed6116ce
LW		 1803 return 0.0;
1804 }
79072805
LW		 1805 }
1806 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 1807 if (SvTYPE(sv) == SVt_IV)
1808 sv_upgrade(sv, SVt_PVNV);
1809 else
1810 sv_upgrade(sv, SVt_NV);
572bbb43 1811#if defined(USE_LONG_DOUBLE)
097ee67d 1812 DEBUG_c({
f93f4e46 1813 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1814 PerlIO_printf(Perl_debug_log,
1815 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1816 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1817 RESTORE_NUMERIC_LOCAL();
1818 });
65202027 1819#else
572bbb43 1820 DEBUG_c({
f93f4e46 1821 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1822 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1823 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1824 RESTORE_NUMERIC_LOCAL();
1825 });
572bbb43 1826#endif
79072805
LW		 1827 }
1828 else if (SvTYPE(sv) < SVt_PVNV)
1829 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 1830 if (SvIOKp(sv) &&
1831 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 1832 {
65202027 1833 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
93a17b20 1834 }
748a9306 1835 else if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1836 dTHR;
599cee73 1837 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1838 not_a_number(sv);
097ee67d 1839 SvNVX(sv) = Atof(SvPVX(sv));
93a17b20 1840 }
79072805 1841 else {
11343788 1842 dTHR;
599cee73 1843 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1844 report_uninit();
25da4f38
IZ		 1845 if (SvTYPE(sv) < SVt_NV)
1846 /* Typically the caller expects that sv_any is not NULL now. */
1847 sv_upgrade(sv, SVt_NV);
a0d0e21e 1848 return 0.0;
79072805
LW		 1849 }
1850 SvNOK_on(sv);
572bbb43 1851#if defined(USE_LONG_DOUBLE)
097ee67d 1852 DEBUG_c({
f93f4e46 1853 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1854 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1855 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1856 RESTORE_NUMERIC_LOCAL();
1857 });
65202027 1858#else
572bbb43 1859 DEBUG_c({
f93f4e46 1860 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1861 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1862 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1863 RESTORE_NUMERIC_LOCAL();
1864 });
572bbb43 1865#endif
463ee0b2 1866 return SvNVX(sv);
79072805
LW		 1867}
1868
76e3520e 1869STATIC IV
cea2e8a9 1870S_asIV(pTHX_ SV *sv)
36477c24 1871{
1872 I32 numtype = looks_like_number(sv);
65202027 1873 NV d;
36477c24 1874
25da4f38 1875 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1876 return Atol(SvPVX(sv));
d008e5eb
GS		 1877 if (!numtype) {
1878 dTHR;
1879 if (ckWARN(WARN_NUMERIC))
1880 not_a_number(sv);
1881 }
097ee67d 1882 d = Atof(SvPVX(sv));
25da4f38 1883 return I_V(d);
36477c24 1884}
1885
76e3520e 1886STATIC UV
cea2e8a9 1887S_asUV(pTHX_ SV *sv)
36477c24 1888{
1889 I32 numtype = looks_like_number(sv);
1890
84902520 1891#ifdef HAS_STRTOUL
25da4f38 1892 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1893 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 1894#endif
d008e5eb
GS		 1895 if (!numtype) {
1896 dTHR;
1897 if (ckWARN(WARN_NUMERIC))
1898 not_a_number(sv);
1899 }
097ee67d 1900 return U_V(Atof(SvPVX(sv)));
36477c24 1901}
1902
25da4f38
IZ		 1903/*
1904 * Returns a combination of (advisory only - can get false negatives)
1905 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1906 * IS_NUMBER_NEG
1907 * 0 if does not look like number.
1908 *
1909 * In fact possible values are 0 and
1910 * IS_NUMBER_TO_INT_BY_ATOL 123
1911 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1912 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
300aed98 1913 * IS_NUMBER_INFINITY
25da4f38
IZ		 1914 * with a possible addition of IS_NUMBER_NEG.
1915 */
1916
954c1994
GS		 1917/*
1918=for apidoc looks_like_number
1919
1920Test if an the content of an SV looks like a number (or is a
1921number).
1922
1923=cut
1924*/
1925
36477c24 1926I32
864dbfa3 1927Perl_looks_like_number(pTHX_ SV *sv)
36477c24 1928{
1929 register char *s;
1930 register char *send;
1931 register char *sbegin;
25da4f38
IZ		 1932 register char *nbegin;
1933 I32 numtype = 0;
300aed98 1934 I32 sawinf = 0;
36477c24 1935 STRLEN len;
1936
1937 if (SvPOK(sv)) {
1c846c1f 1938 sbegin = SvPVX(sv);
36477c24 1939 len = SvCUR(sv);
1940 }
1941 else if (SvPOKp(sv))
1942 sbegin = SvPV(sv, len);
1943 else
1944 return 1;
1945 send = sbegin + len;
1946
1947 s = sbegin;
1948 while (isSPACE(*s))
1949 s++;
25da4f38
IZ		 1950 if (*s == '-') {
1951 s++;
1952 numtype = IS_NUMBER_NEG;
1953 }
1954 else if (*s == '+')
36477c24 1955 s++;
ff0cee69 1956
25da4f38
IZ		 1957 nbegin = s;
1958 /*
097ee67d
JH		 1959 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1960 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1961 * (int)atof().
25da4f38
IZ		 1962 */
1963
300aed98 1964 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 1965 if (isDIGIT(*s)) {
1966 do {
1967 s++;
1968 } while (isDIGIT(*s));
25da4f38
IZ		 1969
1970 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1971 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1972 else
1973 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1974
097ee67d 1975 if (*s == '.'
1c846c1f 1976#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 1977 || IS_NUMERIC_RADIX(*s)
1978#endif
1979 ) {
ff0cee69 1980 s++;
25da4f38 1981 numtype |= IS_NUMBER_NOT_IV;
097ee67d 1982 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 1983 s++;
1984 }
36477c24 1985 }
097ee67d 1986 else if (*s == '.'
1c846c1f 1987#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 1988 || IS_NUMERIC_RADIX(*s)
1989#endif
1990 ) {
ff0cee69 1991 s++;
25da4f38 1992 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
097ee67d 1993 /* no digits before the radix means we need digits after it */
ff0cee69 1994 if (isDIGIT(*s)) {
1995 do {
1996 s++;
1997 } while (isDIGIT(*s));
1998 }
1999 else
2000 return 0;
2001 }
300aed98
JH		 2002 else if (*s == 'I' || *s == 'i') {
2003 s++; if (*s != 'N' && *s != 'n') return 0;
2004 s++; if (*s != 'F' && *s != 'f') return 0;
2005 s++; if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'I' && *s != 'i') return 0;
2008 s++; if (*s != 'T' && *s != 't') return 0;
2009 s++; if (*s != 'Y' && *s != 'y') return 0;
2010 }
2011 sawinf = 1;
2012 }
ff0cee69 2013 else
2014 return 0;
2015
300aed98
JH		 2016 if (sawinf)
2017 numtype = IS_NUMBER_INFINITY;
2018 else {
2019 /* we can have an optional exponent part */
2020 if (*s == 'e' || *s == 'E') {
2021 numtype &= ~IS_NUMBER_NEG;
2022 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2023 s++;
300aed98
JH		 2024 if (*s == '+' || *s == '-')
2025 s++;
2026 if (isDIGIT(*s)) {
2027 do {
2028 s++;
2029 } while (isDIGIT(*s));
2030 }
2031 else
2032 return 0;
2033 }
36477c24 2034 }
2035 while (isSPACE(*s))
2036 s++;
2037 if (s >= send)
2038 return numtype;
2039 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2040 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2041 return 0;
2042}
2043
79072805 2044char *
864dbfa3 2045Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2046{
2047 STRLEN n_a;
2048 return sv_2pv(sv, &n_a);
2049}
2050
25da4f38 2051/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2052static char *
25da4f38
IZ		 2053uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2054{
25da4f38
IZ		 2055 char *ptr = buf + TYPE_CHARS(UV);
2056 char *ebuf = ptr;
2057 int sign;
25da4f38
IZ		 2058
2059 if (is_uv)
2060 sign = 0;
2061 else if (iv >= 0) {
2062 uv = iv;
2063 sign = 0;
2064 } else {
2065 uv = -iv;
2066 sign = 1;
2067 }
2068 do {
2069 *--ptr = '0' + (uv % 10);
2070 } while (uv /= 10);
2071 if (sign)
2072 *--ptr = '-';
2073 *peob = ebuf;
2074 return ptr;
2075}
2076
1fa8b10d 2077char *
864dbfa3 2078Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2079{
2080 register char *s;
2081 int olderrno;
46fc3d4c 2082 SV *tsv;
25da4f38
IZ		 2083 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2084 char *tmpbuf = tbuf;
79072805 2085
463ee0b2
LW		 2086 if (!sv) {
2087 *lp = 0;
2088 return "";
2089 }
8990e307 2090 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2091 mg_get(sv);
2092 if (SvPOKp(sv)) {
2093 *lp = SvCUR(sv);
2094 return SvPVX(sv);
2095 }
cf2093f6 2096 if (SvIOKp(sv)) {
1c846c1f 2097 if (SvIsUV(sv))
57def98f 2098 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2099 else
57def98f 2100 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2101 tsv = Nullsv;
a0d0e21e 2102 goto tokensave;
463ee0b2
LW		 2103 }
2104 if (SvNOKp(sv)) {
2d4389e4 2105 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2106 tsv = Nullsv;
a0d0e21e 2107 goto tokensave;
463ee0b2 2108 }
16d20bd9 2109 if (!SvROK(sv)) {
d008e5eb 2110 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2111 dTHR;
d008e5eb 2112 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2113 report_uninit();
c6ee37c5 2114 }
16d20bd9
AD		 2115 *lp = 0;
2116 return "";
2117 }
463ee0b2 2118 }
ed6116ce
LW		 2119 if (SvTHINKFIRST(sv)) {
2120 if (SvROK(sv)) {
a0d0e21e 2121 SV* tmpstr;
1554e226
DC		 2122 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2123 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2124 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2125 sv = (SV*)SvRV(sv);
2126 if (!sv)
2127 s = "NULLREF";
2128 else {
f9277f47
IZ		 2129 MAGIC *mg;
2130
ed6116ce 2131 switch (SvTYPE(sv)) {
f9277f47
IZ		 2132 case SVt_PVMG:
2133 if ( ((SvFLAGS(sv) &
1c846c1f 2134 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2135 == (SVs_OBJECT|SVs_RMG))
57668c4d 2136 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2137 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2138 dTHR;
2cd61cdb 2139 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2140
2cd61cdb 2141 if (!mg->mg_ptr) {
8782bef2
GB		 2142 char *fptr = "msix";
2143 char reflags[6];
2144 char ch;
2145 int left = 0;
2146 int right = 4;
2147 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2148
155aba94 2149 while((ch = *fptr++)) {
8782bef2
GB		 2150 if(reganch & 1) {
2151 reflags[left++] = ch;
2152 }
2153 else {
2154 reflags[right--] = ch;
2155 }
2156 reganch >>= 1;
2157 }
2158 if(left != 4) {
2159 reflags[left] = '-';
2160 left = 5;
2161 }
2162
2163 mg->mg_len = re->prelen + 4 + left;
2164 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2165 Copy("(?", mg->mg_ptr, 2, char);
2166 Copy(reflags, mg->mg_ptr+2, left, char);
2167 Copy(":", mg->mg_ptr+left+2, 1, char);
2168 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2169 mg->mg_ptr[mg->mg_len - 1] = ')';
2170 mg->mg_ptr[mg->mg_len] = 0;
2171 }
3280af22 2172 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2173 *lp = mg->mg_len;
2174 return mg->mg_ptr;
f9277f47
IZ		 2175 }
2176 /* Fall through */
ed6116ce
LW		 2177 case SVt_NULL:
2178 case SVt_IV:
2179 case SVt_NV:
2180 case SVt_RV:
2181 case SVt_PV:
2182 case SVt_PVIV:
2183 case SVt_PVNV:
81689caa
HS		 2184 case SVt_PVBM: if (SvROK(sv))
2185 s = "REF";
2186 else
2187 s = "SCALAR"; break;
ed6116ce
LW		 2188 case SVt_PVLV: s = "LVALUE"; break;
2189 case SVt_PVAV: s = "ARRAY"; break;
2190 case SVt_PVHV: s = "HASH"; break;
2191 case SVt_PVCV: s = "CODE"; break;
2192 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2193 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2194 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2195 default: s = "UNKNOWN"; break;
2196 }
46fc3d4c 2197 tsv = NEWSV(0,0);
ed6116ce 2198 if (SvOBJECT(sv))
cea2e8a9 2199 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2200 else
46fc3d4c 2201 sv_setpv(tsv, s);
57def98f 2202 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2203 goto tokensaveref;
463ee0b2 2204 }
ed6116ce
LW		 2205 *lp = strlen(s);
2206 return s;
79072805 2207 }
0336b60e
IZ		 2208 if (SvREADONLY(sv) && !SvOK(sv)) {
2209 dTHR;
2210 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2211 report_uninit();
ed6116ce
LW		 2212 *lp = 0;
2213 return "";
79072805 2214 }
79072805 2215 }
25da4f38
IZ		 2216 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2217 /* XXXX 64-bit? IV may have better precision... */
8aad8eb3 2218 /* I tried changing this to be 64-bit-aware and
34d861e4
JH		 2219 * the t/op/numconvert.t became very, very, angry.
2220 * --jhi Sep 1999 */
79072805
LW		 2221 if (SvTYPE(sv) < SVt_PVNV)
2222 sv_upgrade(sv, SVt_PVNV);
1c846c1f 2223 /* The +20 is pure guesswork. Configure test needed. --jhi */
59155cc0 2224 SvGROW(sv, NV_DIG + 20);
463ee0b2 2225 s = SvPVX(sv);
79072805 2226 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2227#ifdef apollo
463ee0b2 2228 if (SvNVX(sv) == 0.0)
79072805
LW		 2229 (void)strcpy(s,"0");
2230 else
2231#endif /*apollo*/
bbce6d69 2232 {
2d4389e4 2233 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2234 }
79072805 2235 errno = olderrno;
a0d0e21e
LW		 2236#ifdef FIXNEGATIVEZERO
2237 if (*s == '-' && s[1] == '0' && !s[2])
2238 strcpy(s,"0");
2239#endif
79072805
LW		 2240 while (*s) s++;
2241#ifdef hcx
2242 if (s[-1] == '.')
46fc3d4c 2243 *--s = '\0';
79072805
LW		 2244#endif
2245 }
748a9306 2246 else if (SvIOKp(sv)) {
25da4f38 2247 U32 isIOK = SvIOK(sv);
0336b60e 2248 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2249 char buf[TYPE_CHARS(UV)];
2250 char *ebuf, *ptr;
2251
79072805
LW		 2252 if (SvTYPE(sv) < SVt_PVIV)
2253 sv_upgrade(sv, SVt_PVIV);
0336b60e 2254 if (isUIOK)
25da4f38 2255 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2256 else
25da4f38 2257 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2258 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2259 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2260 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2261 s = SvEND(sv);
0336b60e 2262 *s = '\0';
25da4f38 2263 if (isIOK)
64f14228
GA		 2264 SvIOK_on(sv);
2265 else
2266 SvIOKp_on(sv);
0336b60e
IZ		 2267 if (isUIOK)
2268 SvIsUV_on(sv);
2269 SvPOK_on(sv);
79072805
LW		 2270 }
2271 else {
11343788 2272 dTHR;
0336b60e
IZ		 2273 if (ckWARN(WARN_UNINITIALIZED)
2274 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2275 {
1d7c1841 2276 report_uninit();
0336b60e 2277 }
a0d0e21e 2278 *lp = 0;
25da4f38
IZ		 2279 if (SvTYPE(sv) < SVt_PV)
2280 /* Typically the caller expects that sv_any is not NULL now. */
2281 sv_upgrade(sv, SVt_PV);
a0d0e21e 2282 return "";
79072805 2283 }
463ee0b2
LW		 2284 *lp = s - SvPVX(sv);
2285 SvCUR_set(sv, *lp);
79072805 2286 SvPOK_on(sv);
1d7c1841
GS		 2287 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2288 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2289 return SvPVX(sv);
a0d0e21e
LW		 2290
2291 tokensave:
2292 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2293 /* Sneaky stuff here */
2294
2295 tokensaveref:
46fc3d4c 2296 if (!tsv)
96827780 2297 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2298 sv_2mortal(tsv);
2299 *lp = SvCUR(tsv);
2300 return SvPVX(tsv);
a0d0e21e
LW		 2301 }
2302 else {
2303 STRLEN len;
46fc3d4c 2304 char *t;
2305
2306 if (tsv) {
2307 sv_2mortal(tsv);
2308 t = SvPVX(tsv);
2309 len = SvCUR(tsv);
2310 }
2311 else {
96827780
MB		 2312 t = tmpbuf;
2313 len = strlen(tmpbuf);
46fc3d4c 2314 }
a0d0e21e 2315#ifdef FIXNEGATIVEZERO
46fc3d4c 2316 if (len == 2 && t[0] == '-' && t[1] == '0') {
2317 t = "0";
2318 len = 1;
2319 }
a0d0e21e
LW		 2320#endif
2321 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2322 *lp = len;
a0d0e21e
LW		 2323 s = SvGROW(sv, len + 1);
2324 SvCUR_set(sv, len);
46fc3d4c 2325 (void)strcpy(s, t);
6bf554b4 2326 SvPOKp_on(sv);
a0d0e21e
LW		 2327 return s;
2328 }
463ee0b2
LW		 2329}
2330
7340a771
GS		 2331char *
2332Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2333{
560a288e
GS		 2334 STRLEN n_a;
2335 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2336}
2337
2338char *
2339Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2340{
2341 return sv_2pv(sv,lp);
2342}
2343
2344char *
2345Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2346{
560a288e
GS		 2347 STRLEN n_a;
2348 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2349}
2350
2351char *
2352Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2353{
560a288e 2354 sv_utf8_upgrade(sv);
7340a771
GS		 2355 return sv_2pv(sv,lp);
2356}
1c846c1f 2357
463ee0b2
LW		 2358/* This function is only called on magical items */
2359bool
864dbfa3 2360Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2361{
8990e307 2362 if (SvGMAGICAL(sv))
463ee0b2
LW		 2363 mg_get(sv);
2364
a0d0e21e
LW		 2365 if (!SvOK(sv))
2366 return 0;
2367 if (SvROK(sv)) {
11343788 2368 dTHR;
a0d0e21e 2369 SV* tmpsv;
1554e226
DC		 2370 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2371 (SvRV(tmpsv) != SvRV(sv)))
9e7bc3e8 2372 return SvTRUE(tmpsv);
a0d0e21e
LW		 2373 return SvRV(sv) != 0;
2374 }
463ee0b2 2375 if (SvPOKp(sv)) {
11343788
MB		 2376 register XPV* Xpvtmp;
2377 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2378 (*Xpvtmp->xpv_pv > '0' ||
2379 Xpvtmp->xpv_cur > 1 ||
2380 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2381 return 1;
2382 else
2383 return 0;
2384 }
2385 else {
2386 if (SvIOKp(sv))
2387 return SvIVX(sv) != 0;
2388 else {
2389 if (SvNOKp(sv))
2390 return SvNVX(sv) != 0.0;
2391 else
2392 return FALSE;
2393 }
2394 }
79072805
LW		 2395}
2396
c461cf8f
JH		 2397/*
2398=for apidoc sv_utf8_upgrade
2399
2400Convert the PV of an SV to its UTF8-encoded form.
2401
2402=cut
2403*/
2404
560a288e
GS		 2405void
2406Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2407{
40826f67
JH		 2408 char *s, *t;
2409 bool hibit;
560a288e
GS		 2410
2411 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2412 return;
2413
40826f67
JH		 2414 /* This function could be much more efficient if we had a FLAG in SVs
2415 * to signal if there are any hibit chars in the PV.
560a288e 2416 */
40826f67
JH		 2417 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2418 if (*t & 0x80)
2419 hibit = TRUE;
560a288e 2420
40826f67 2421 if (hibit) {
67e989fb 2422 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
00df9076 2423 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
841d7a39
JH		 2424 SvCUR(sv) = len - 1;
2425 SvLEN(sv) = len; /* No longer know the real size. */
560a288e 2426 SvUTF8_on(sv);
d2f449dd 2427 Safefree(s); /* No longer using what was there before. */
560a288e
GS		 2428 }
2429}
2430
c461cf8f
JH		 2431/*
2432=for apidoc sv_utf8_downgrade
2433
2434Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2435This may not be possible if the PV contains non-byte encoding characters;
2436if this is the case, either returns false or, if C<fail_ok> is not
2437true, croaks.
2438
2439=cut
2440*/
2441
560a288e
GS		 2442bool
2443Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2444{
2445 if (SvPOK(sv) && SvUTF8(sv)) {
2446 char *c = SvPVX(sv);
9f9ab905 2447 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
00df9076 2448 if (!utf8_to_bytes((U8*)c, &len)) {
67e989fb
JH		 2449 if (fail_ok)
2450 return FALSE;
2451 else
2f5768b8 2452 Perl_croak(aTHX_ "big byte");
67e989fb
JH		 2453 }
2454 SvCUR(sv) = len - 1;
9f9ab905 2455 SvUTF8_off(sv);
560a288e
GS		 2456 }
2457 return TRUE;
2458}
2459
c461cf8f
JH		 2460/*
2461=for apidoc sv_utf8_encode
2462
2463Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
1c846c1f 2464flag so that it looks like bytes again. Nothing calls this.
c461cf8f
JH		 2465
2466=cut
2467*/
2468
560a288e
GS		 2469void
2470Perl_sv_utf8_encode(pTHX_ register SV *sv)
2471{
2472 sv_utf8_upgrade(sv);
2473 SvUTF8_off(sv);
2474}
2475
2476bool
2477Perl_sv_utf8_decode(pTHX_ register SV *sv)
2478{
2479 if (SvPOK(sv)) {
2480 char *c;
2481 bool has_utf = FALSE;
2482 if (!sv_utf8_downgrade(sv, TRUE))
2483 return FALSE;
2484
2485 /* it is actually just a matter of turning the utf8 flag on, but
2486 * we want to make sure everything inside is valid utf8 first.
2487 */
2488 c = SvPVX(sv);
00df9076 2489 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
67e989fb
JH		 2490 return FALSE;
2491
560a288e 2492 while (c < SvEND(sv)) {
67e989fb
JH		 2493 if (*c++ & 0x80) {
2494 SvUTF8_on(sv);
2495 break;
2496 }
560a288e 2497 }
560a288e
GS		 2498 }
2499 return TRUE;
2500}
2501
2502
79072805 2503/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2504 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2505 * as temporary.
2506 */
2507
954c1994
GS		 2508/*
2509=for apidoc sv_setsv
2510
2511Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2512The source SV may be destroyed if it is mortal. Does not handle 'set'
2513magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2514C<sv_setsv_mg>.
2515
2516=cut
2517*/
2518
79072805 2519void
864dbfa3 2520Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2521{
11343788 2522 dTHR;
8990e307
LW		 2523 register U32 sflags;
2524 register int dtype;
2525 register int stype;
463ee0b2 2526
79072805
LW		 2527 if (sstr == dstr)
2528 return;
2213622d 2529 SV_CHECK_THINKFIRST(dstr);
79072805 2530 if (!sstr)
3280af22 2531 sstr = &PL_sv_undef;
8990e307
LW		 2532 stype = SvTYPE(sstr);
2533 dtype = SvTYPE(dstr);
79072805 2534
a0d0e21e 2535 SvAMAGIC_off(dstr);
9e7bc3e8 2536
463ee0b2 2537 /* There's a lot of redundancy below but we're going for speed here */
79072805 2538
8990e307 2539 switch (stype) {
79072805 2540 case SVt_NULL:
aece5585 2541 undef_sstr:
20408e3c
GS		 2542 if (dtype != SVt_PVGV) {
2543 (void)SvOK_off(dstr);
2544 return;
2545 }
2546 break;
463ee0b2 2547 case SVt_IV:
aece5585
GA		 2548 if (SvIOK(sstr)) {
2549 switch (dtype) {
2550 case SVt_NULL:
8990e307 2551 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2552 break;
2553 case SVt_NV:
8990e307 2554 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2555 break;
2556 case SVt_RV:
2557 case SVt_PV:
a0d0e21e 2558 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2559 break;
2560 }
2561 (void)SvIOK_only(dstr);
2562 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2563 if (SvIsUV(sstr))
2564 SvIsUV_on(dstr);
aece5585
GA		 2565 SvTAINT(dstr);
2566 return;
8990e307 2567 }
aece5585
GA		 2568 goto undef_sstr;
2569
463ee0b2 2570 case SVt_NV:
aece5585
GA		 2571 if (SvNOK(sstr)) {
2572 switch (dtype) {
2573 case SVt_NULL:
2574 case SVt_IV:
8990e307 2575 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2576 break;
2577 case SVt_RV:
2578 case SVt_PV:
2579 case SVt_PVIV:
a0d0e21e 2580 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2581 break;
2582 }
2583 SvNVX(dstr) = SvNVX(sstr);
2584 (void)SvNOK_only(dstr);
2585 SvTAINT(dstr);
2586 return;
8990e307 2587 }
aece5585
GA		 2588 goto undef_sstr;
2589
ed6116ce 2590 case SVt_RV:
8990e307 2591 if (dtype < SVt_RV)
ed6116ce 2592 sv_upgrade(dstr, SVt_RV);
c07a80fd 2593 else if (dtype == SVt_PVGV &&
2594 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2595 sstr = SvRV(sstr);
a5f75d66 2596 if (sstr == dstr) {
1d7c1841
GS		 2597 if (GvIMPORTED(dstr) != GVf_IMPORTED
2598 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2599 {
a5f75d66 2600 GvIMPORTED_on(dstr);
1d7c1841 2601 }
a5f75d66
AD		 2602 GvMULTI_on(dstr);
2603 return;
2604 }
c07a80fd 2605 goto glob_assign;
2606 }
ed6116ce 2607 break;
463ee0b2 2608 case SVt_PV:
fc36a67e 2609 case SVt_PVFM:
8990e307 2610 if (dtype < SVt_PV)
463ee0b2 2611 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2612 break;
2613 case SVt_PVIV:
8990e307 2614 if (dtype < SVt_PVIV)
463ee0b2 2615 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2616 break;
2617 case SVt_PVNV:
8990e307 2618 if (dtype < SVt_PVNV)
463ee0b2 2619 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2620 break;
4633a7c4
LW		 2621 case SVt_PVAV:
2622 case SVt_PVHV:
2623 case SVt_PVCV:
4633a7c4 2624 case SVt_PVIO:
533c011a 2625 if (PL_op)
cea2e8a9 2626 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2627 PL_op_name[PL_op->op_type]);
4633a7c4 2628 else
cea2e8a9 2629 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2630 break;
2631
79072805 2632 case SVt_PVGV:
8990e307 2633 if (dtype <= SVt_PVGV) {
c07a80fd 2634 glob_assign:
a5f75d66 2635 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2636 char *name = GvNAME(sstr);
2637 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2638 sv_upgrade(dstr, SVt_PVGV);
6662521e 2639 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2640 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2641 GvNAME(dstr) = savepvn(name, len);
2642 GvNAMELEN(dstr) = len;
2643 SvFAKE_on(dstr); /* can coerce to non-glob */
2644 }
7bac28a0 2645 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2646 else if (PL_curstackinfo->si_type == PERLSI_SORT
2647 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2648 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2649 GvNAME(dstr));
a0d0e21e 2650 (void)SvOK_off(dstr);
a5f75d66 2651 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2652 gp_free((GV*)dstr);
79072805 2653 GvGP(dstr) = gp_ref(GvGP(sstr));
8990e307 2654 SvTAINT(dstr);
1d7c1841
GS		 2655 if (GvIMPORTED(dstr) != GVf_IMPORTED
2656 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2657 {
a5f75d66 2658 GvIMPORTED_on(dstr);
1d7c1841 2659 }
a5f75d66 2660 GvMULTI_on(dstr);
79072805
LW		 2661 return;
2662 }
2663 /* FALL THROUGH */
2664
2665 default:
973f89ab
CS		 2666 if (SvGMAGICAL(sstr)) {
2667 mg_get(sstr);
2668 if (SvTYPE(sstr) != stype) {
2669 stype = SvTYPE(sstr);
2670 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2671 goto glob_assign;
2672 }
2673 }
ded42b9f 2674 if (stype == SVt_PVLV)
6fc92669 2675 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2676 else
6fc92669 2677 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2678 }
2679
8990e307
LW		 2680 sflags = SvFLAGS(sstr);
2681
2682 if (sflags & SVf_ROK) {
2683 if (dtype >= SVt_PV) {
2684 if (dtype == SVt_PVGV) {
2685 SV *sref = SvREFCNT_inc(SvRV(sstr));
2686 SV *dref = 0;
a5f75d66 2687 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2688
2689 if (intro) {
2690 GP *gp;
1d7c1841 2691 gp_free((GV*)dstr);
a5f75d66 2692 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2693 Newz(602,gp, 1, GP);
44a8e56a 2694 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2695 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2696 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2697 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2698 }
a5f75d66 2699 GvMULTI_on(dstr);
8990e307
LW		 2700 switch (SvTYPE(sref)) {
2701 case SVt_PVAV:
a0d0e21e
LW		 2702 if (intro)
2703 SAVESPTR(GvAV(dstr));
2704 else
2705 dref = (SV*)GvAV(dstr);
8990e307 2706 GvAV(dstr) = (AV*)sref;
39bac7f7 2707 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2708 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2709 {
a5f75d66 2710 GvIMPORTED_AV_on(dstr);
1d7c1841 2711 }
8990e307
LW		 2712 break;
2713 case SVt_PVHV:
a0d0e21e
LW		 2714 if (intro)
2715 SAVESPTR(GvHV(dstr));
2716 else
2717 dref = (SV*)GvHV(dstr);
8990e307 2718 GvHV(dstr) = (HV*)sref;
39bac7f7 2719 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2720 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2721 {
a5f75d66 2722 GvIMPORTED_HV_on(dstr);
1d7c1841 2723 }
8990e307
LW		 2724 break;
2725 case SVt_PVCV:
8ebc5c01 2726 if (intro) {
2727 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2728 SvREFCNT_dec(GvCV(dstr));
2729 GvCV(dstr) = Nullcv;
68dc0745 2730 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2731 PL_sub_generation++;
8ebc5c01 2732 }
a0d0e21e 2733 SAVESPTR(GvCV(dstr));
8ebc5c01 2734 }
68dc0745 2735 else
2736 dref = (SV*)GvCV(dstr);
2737 if (GvCV(dstr) != (CV*)sref) {
748a9306 2738 CV* cv = GvCV(dstr);
4633a7c4 2739 if (cv) {
68dc0745 2740 if (!GvCVGEN((GV*)dstr) &&
2741 (CvROOT(cv) || CvXSUB(cv)))
2742 {
fe5e78ed 2743 SV *const_sv = cv_const_sv(cv);
1c846c1f 2744 bool const_changed = TRUE;
fe5e78ed 2745 if(const_sv)
1c846c1f
NIS		 2746 const_changed = sv_cmp(const_sv,
2747 op_const_sv(CvSTART((CV*)sref),
036b4402 2748 (CV*)sref));
7bac28a0 2749 /* ahem, death to those who redefine
2750 * active sort subs */
3280af22
NIS		 2751 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2752 PL_sortcop == CvSTART(cv))
1c846c1f 2753 Perl_croak(aTHX_
7bac28a0 2754 "Can't redefine active sort subroutine %s",
2755 GvENAME((GV*)dstr));
036b4402 2756 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
1c846c1f 2757 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
fe5e78ed 2758 "Constant subroutine %s redefined"
1c846c1f 2759 : "Subroutine %s redefined",
2f34f9d4 2760 GvENAME((GV*)dstr));
9607fc9c 2761 }
3fe9a6f1 2762 cv_ckproto(cv, (GV*)dstr,
2763 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2764 }
a5f75d66 2765 GvCV(dstr) = (CV*)sref;
7a4c00b4 2766 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2767 GvASSUMECV_on(dstr);
3280af22 2768 PL_sub_generation++;
a5f75d66 2769 }
39bac7f7 2770 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2771 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2772 {
a5f75d66 2773 GvIMPORTED_CV_on(dstr);
1d7c1841 2774 }
8990e307 2775 break;
91bba347
LW		 2776 case SVt_PVIO:
2777 if (intro)
2778 SAVESPTR(GvIOp(dstr));
2779 else
2780 dref = (SV*)GvIOp(dstr);
2781 GvIOp(dstr) = (IO*)sref;
2782 break;
f4d13ee9
JH		 2783 case SVt_PVFM:
2784 if (intro)
2785 SAVESPTR(GvFORM(dstr));
2786 else
2787 dref = (SV*)GvFORM(dstr);
2788 GvFORM(dstr) = (CV*)sref;
2789 break;
8990e307 2790 default:
a0d0e21e
LW		 2791 if (intro)
2792 SAVESPTR(GvSV(dstr));
2793 else
2794 dref = (SV*)GvSV(dstr);
8990e307 2795 GvSV(dstr) = sref;
39bac7f7 2796 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2797 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2798 {
a5f75d66 2799 GvIMPORTED_SV_on(dstr);
1d7c1841 2800 }
8990e307
LW		 2801 break;
2802 }
2803 if (dref)
2804 SvREFCNT_dec(dref);
a0d0e21e
LW		 2805 if (intro)
2806 SAVEFREESV(sref);
8990e307
LW		 2807 SvTAINT(dstr);
2808 return;
2809 }
a0d0e21e 2810 if (SvPVX(dstr)) {
760ac839 2811 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2812 if (SvLEN(dstr))
2813 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2814 SvLEN(dstr)=SvCUR(dstr)=0;
2815 }
8990e307 2816 }
a0d0e21e 2817 (void)SvOK_off(dstr);
8990e307 2818 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2819 SvROK_on(dstr);
8990e307 2820 if (sflags & SVp_NOK) {
ed6116ce
LW		 2821 SvNOK_on(dstr);
2822 SvNVX(dstr) = SvNVX(sstr);
2823 }
8990e307 2824 if (sflags & SVp_IOK) {
a0d0e21e 2825 (void)SvIOK_on(dstr);
ed6116ce 2826 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2827 if (sflags & SVf_IVisUV)
25da4f38 2828 SvIsUV_on(dstr);
ed6116ce 2829 }
a0d0e21e
LW		 2830 if (SvAMAGIC(sstr)) {
2831 SvAMAGIC_on(dstr);
2832 }
ed6116ce 2833 }
8990e307 2834 else if (sflags & SVp_POK) {
79072805
LW		 2835
2836 /*
2837 * Check to see if we can just swipe the string. If so, it's a
2838 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2839 * It might even be a win on short strings if SvPVX(dstr)
2840 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2841 */
2842
ff68c719 2843 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2844 SvREFCNT(sstr) == 1 && /* and no other references to it? */
1c846c1f
NIS		 2845 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2846 SvLEN(sstr)) /* and really is a string */
a5f75d66 2847 {
adbc6bb1 2848 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2849 if (SvOOK(dstr)) {
2850 SvFLAGS(dstr) &= ~SVf_OOK;
2851 Safefree(SvPVX(dstr) - SvIVX(dstr));
2852 }
50483b2c 2853 else if (SvLEN(dstr))
a5f75d66 2854 Safefree(SvPVX(dstr));
79072805 2855 }
a5f75d66 2856 (void)SvPOK_only(dstr);
463ee0b2 2857 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2858 SvLEN_set(dstr, SvLEN(sstr));
2859 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2860
79072805 2861 SvTEMP_off(dstr);
2b1c7e3e 2862 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2863 SvPV_set(sstr, Nullch);
2864 SvLEN_set(sstr, 0);
a5f75d66
AD		 2865 SvCUR_set(sstr, 0);
2866 SvTEMP_off(sstr);
79072805
LW		 2867 }
2868 else { /* have to copy actual string */
8990e307
LW		 2869 STRLEN len = SvCUR(sstr);
2870
2871 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2872 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2873 SvCUR_set(dstr, len);
2874 *SvEND(dstr) = '\0';
a0d0e21e 2875 (void)SvPOK_only(dstr);
79072805 2876 }
3aa33fe5 2877 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2878 SvUTF8_on(dstr);
79072805 2879 /*SUPPRESS 560*/
8990e307 2880 if (sflags & SVp_NOK) {
79072805 2881 SvNOK_on(dstr);
463ee0b2 2882 SvNVX(dstr) = SvNVX(sstr);
79072805 2883 }
8990e307 2884 if (sflags & SVp_IOK) {
a0d0e21e 2885 (void)SvIOK_on(dstr);
463ee0b2 2886 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2887 if (sflags & SVf_IVisUV)
25da4f38 2888 SvIsUV_on(dstr);
79072805
LW		 2889 }
2890 }
8990e307 2891 else if (sflags & SVp_NOK) {
463ee0b2 2892 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2893 (void)SvNOK_only(dstr);
2b1c7e3e 2894 if (sflags & SVf_IOK) {
a0d0e21e 2895 (void)SvIOK_on(dstr);
463ee0b2 2896 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2897 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2898 if (sflags & SVf_IVisUV)
25da4f38 2899 SvIsUV_on(dstr);
79072805
LW		 2900 }
2901 }
8990e307 2902 else if (sflags & SVp_IOK) {
a0d0e21e 2903 (void)SvIOK_only(dstr);
463ee0b2 2904 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2905 if (sflags & SVf_IVisUV)
25da4f38 2906 SvIsUV_on(dstr);
79072805
LW		 2907 }
2908 else {
20408e3c 2909 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2910 if (ckWARN(WARN_MISC))
2911 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2912 }
2913 else
2914 (void)SvOK_off(dstr);
a0d0e21e 2915 }
463ee0b2 2916 SvTAINT(dstr);
79072805
LW		 2917}
2918
954c1994
GS		 2919/*
2920=for apidoc sv_setsv_mg
2921
2922Like C<sv_setsv>, but also handles 'set' magic.
2923
2924=cut
2925*/
2926
79072805 2927void
864dbfa3 2928Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2929{
2930 sv_setsv(dstr,sstr);
2931 SvSETMAGIC(dstr);
2932}
2933
954c1994
GS		 2934/*
2935=for apidoc sv_setpvn
2936
2937Copies a string into an SV. The C<len> parameter indicates the number of
2938bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2939
2940=cut
2941*/
2942
ef50df4b 2943void
864dbfa3 2944Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2945{
c6f8c383 2946 register char *dptr;
4561caa4
CS		 2947 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2948 elicit a warning, but it won't hurt. */
2213622d 2949 SV_CHECK_THINKFIRST(sv);
463ee0b2 2950 if (!ptr) {
a0d0e21e 2951 (void)SvOK_off(sv);
463ee0b2
LW		 2952 return;
2953 }
6fc92669 2954 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 2955
79072805 2956 SvGROW(sv, len + 1);
c6f8c383
GA		 2957 dptr = SvPVX(sv);
2958 Move(ptr,dptr,len,char);
2959 dptr[len] = '\0';
79072805 2960 SvCUR_set(sv, len);
a0d0e21e 2961 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 2962 SvTAINT(sv);
79072805
LW		 2963}
2964
954c1994
GS		 2965/*
2966=for apidoc sv_setpvn_mg
2967
2968Like C<sv_setpvn>, but also handles 'set' magic.
2969
2970=cut
2971*/
2972
79072805 2973void
864dbfa3 2974Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 2975{
2976 sv_setpvn(sv,ptr,len);
2977 SvSETMAGIC(sv);
2978}
2979
954c1994
GS		 2980/*
2981=for apidoc sv_setpv
2982
2983Copies a string into an SV. The string must be null-terminated. Does not
2984handle 'set' magic. See C<sv_setpv_mg>.
2985
2986=cut
2987*/
2988
ef50df4b 2989void
864dbfa3 2990Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 2991{
2992 register STRLEN len;
2993
2213622d 2994 SV_CHECK_THINKFIRST(sv);
463ee0b2 2995 if (!ptr) {
a0d0e21e 2996 (void)SvOK_off(sv);
463ee0b2
LW		 2997 return;
2998 }
79072805 2999 len = strlen(ptr);
6fc92669 3000 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3001
79072805 3002 SvGROW(sv, len + 1);
463ee0b2 3003 Move(ptr,SvPVX(sv),len+1,char);
79072805 3004 SvCUR_set(sv, len);
a0d0e21e 3005 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3006 SvTAINT(sv);
3007}
3008
954c1994
GS		 3009/*
3010=for apidoc sv_setpv_mg
3011
3012Like C<sv_setpv>, but also handles 'set' magic.
3013
3014=cut
3015*/
3016
463ee0b2 3017void
864dbfa3 3018Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3019{
3020 sv_setpv(sv,ptr);
3021 SvSETMAGIC(sv);
3022}
3023
954c1994
GS		 3024/*
3025=for apidoc sv_usepvn
3026
3027Tells an SV to use C<ptr> to find its string value. Normally the string is
1c846c1f 3028stored inside the SV but sv_usepvn allows the SV to use an outside string.
954c1994
GS		 3029The C<ptr> should point to memory that was allocated by C<malloc>. The
3030string length, C<len>, must be supplied. This function will realloc the
3031memory pointed to by C<ptr>, so that pointer should not be freed or used by
3032the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3033See C<sv_usepvn_mg>.
3034
3035=cut
3036*/
3037
ef50df4b 3038void
864dbfa3 3039Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3040{
2213622d 3041 SV_CHECK_THINKFIRST(sv);
c6f8c383 3042 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3043 if (!ptr) {
a0d0e21e 3044 (void)SvOK_off(sv);
463ee0b2
LW		 3045 return;
3046 }
a0ed51b3 3047 (void)SvOOK_off(sv);
50483b2c 3048 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3049 Safefree(SvPVX(sv));
3050 Renew(ptr, len+1, char);
3051 SvPVX(sv) = ptr;
3052 SvCUR_set(sv, len);
3053 SvLEN_set(sv, len+1);
3054 *SvEND(sv) = '\0';
a0d0e21e 3055 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3056 SvTAINT(sv);
79072805
LW		 3057}
3058
954c1994
GS		 3059/*
3060=for apidoc sv_usepvn_mg
3061
3062Like C<sv_usepvn>, but also handles 'set' magic.
3063
3064=cut
3065*/
3066
ef50df4b 3067void
864dbfa3 3068Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3069{
51c1089b 3070 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3071 SvSETMAGIC(sv);
3072}
3073
6fc92669 3074void
864dbfa3 3075Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3076{
2213622d
GA		 3077 if (SvREADONLY(sv)) {
3078 dTHR;
1c846c1f
NIS		 3079 if (SvFAKE(sv)) {
3080 char *pvx = SvPVX(sv);
3081 STRLEN len = SvCUR(sv);
3082 U32 hash = SvUVX(sv);
3083 SvGROW(sv, len + 1);
3084 Move(pvx,SvPVX(sv),len,char);
3085 *SvEND(sv) = '\0';
3086 SvFAKE_off(sv);
3087 SvREADONLY_off(sv);
3088 unsharepvn(pvx,len,hash);
3089 }
3090 else if (PL_curcop != &PL_compiling)
cea2e8a9 3091 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3092 }
2213622d
GA		 3093 if (SvROK(sv))
3094 sv_unref(sv);
6fc92669
GS		 3095 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3096 sv_unglob(sv);
0f15f207 3097}
1c846c1f 3098
954c1994
GS		 3099/*
3100=for apidoc sv_chop
3101
1c846c1f 3102Efficient removal of characters from the beginning of the string buffer.
954c1994
GS		 3103SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3104the string buffer. The C<ptr> becomes the first character of the adjusted
3105string.
3106
3107=cut
3108*/
3109
79072805 3110void
864dbfa3 3111Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
1c846c1f
NIS		 3112
3113
79072805
LW		 3114{
3115 register STRLEN delta;
3116
a0d0e21e 3117 if (!ptr || !SvPOKp(sv))
79072805 3118 return;
2213622d 3119 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3120 if (SvTYPE(sv) < SVt_PVIV)
3121 sv_upgrade(sv,SVt_PVIV);
3122
3123 if (!SvOOK(sv)) {
50483b2c
JD		 3124 if (!SvLEN(sv)) { /* make copy of shared string */
3125 char *pvx = SvPVX(sv);
3126 STRLEN len = SvCUR(sv);
3127 SvGROW(sv, len + 1);
3128 Move(pvx,SvPVX(sv),len,char);
3129 *SvEND(sv) = '\0';
3130 }
463ee0b2 3131 SvIVX(sv) = 0;
79072805
LW		 3132 SvFLAGS(sv) |= SVf_OOK;
3133 }
25da4f38 3134 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3135 delta = ptr - SvPVX(sv);
79072805
LW		 3136 SvLEN(sv) -= delta;
3137 SvCUR(sv) -= delta;
463ee0b2
LW		 3138 SvPVX(sv) += delta;
3139 SvIVX(sv) += delta;
79072805
LW		 3140}
3141
954c1994
GS		 3142/*
3143=for apidoc sv_catpvn
3144
3145Concatenates the string onto the end of the string which is in the SV. The
3146C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3147'set' magic. See C<sv_catpvn_mg>.
3148
3149=cut
3150*/
3151
79072805 3152void
864dbfa3 3153Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3154{
463ee0b2 3155 STRLEN tlen;
748a9306 3156 char *junk;
a0d0e21e 3157
748a9306 3158 junk = SvPV_force(sv, tlen);
463ee0b2 3159 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3160 if (ptr == junk)
3161 ptr = SvPVX(sv);
463ee0b2 3162 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3163 SvCUR(sv) += len;
3164 *SvEND(sv) = '\0';
d41ff1b8 3165 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3166 SvTAINT(sv);
79072805
LW		 3167}
3168
954c1994
GS		 3169/*
3170=for apidoc sv_catpvn_mg
3171
3172Like C<sv_catpvn>, but also handles 'set' magic.
3173
3174=cut
3175*/
3176
79072805 3177void
864dbfa3 3178Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3179{
3180 sv_catpvn(sv,ptr,len);
3181 SvSETMAGIC(sv);
3182}
3183
954c1994
GS		 3184/*
3185=for apidoc sv_catsv
3186
3187Concatenates the string from SV C<ssv> onto the end of the string in SV
3188C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3189
3190=cut
3191*/
3192
ef50df4b 3193void
864dbfa3 3194Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3195{
3196 char *s;
463ee0b2 3197 STRLEN len;
79072805
LW		 3198 if (!sstr)
3199 return;
155aba94 3200 if ((s = SvPV(sstr, len))) {
e84ff256 3201 if (DO_UTF8(sstr)) {
560a288e 3202 sv_utf8_upgrade(dstr);
e84ff256 3203 sv_catpvn(dstr,s,len);
560a288e 3204 SvUTF8_on(dstr);
e84ff256
GS		 3205 }
3206 else
3207 sv_catpvn(dstr,s,len);
560a288e 3208 }
79072805
LW		 3209}
3210
954c1994
GS		 3211/*
3212=for apidoc sv_catsv_mg
3213
3214Like C<sv_catsv>, but also handles 'set' magic.
3215
3216=cut
3217*/
3218
79072805 3219void
864dbfa3 3220Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3221{
3222 sv_catsv(dstr,sstr);
3223 SvSETMAGIC(dstr);
3224}
3225
954c1994
GS		 3226/*
3227=for apidoc sv_catpv
3228
3229Concatenates the string onto the end of the string which is in the SV.
3230Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3231
3232=cut
3233*/
3234
ef50df4b 3235void
864dbfa3 3236Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3237{
3238 register STRLEN len;
463ee0b2 3239 STRLEN tlen;
748a9306 3240 char *junk;
79072805 3241
79072805
LW		 3242 if (!ptr)
3243 return;
748a9306 3244 junk = SvPV_force(sv, tlen);
79072805 3245 len = strlen(ptr);
463ee0b2 3246 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3247 if (ptr == junk)
3248 ptr = SvPVX(sv);
463ee0b2 3249 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3250 SvCUR(sv) += len;
d41ff1b8 3251 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3252 SvTAINT(sv);
79072805
LW		 3253}
3254
954c1994
GS		 3255/*
3256=for apidoc sv_catpv_mg
3257
3258Like C<sv_catpv>, but also handles 'set' magic.
3259
3260=cut
3261*/
3262
ef50df4b 3263void
864dbfa3 3264Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3265{
51c1089b 3266 sv_catpv(sv,ptr);
ef50df4b
GS		 3267 SvSETMAGIC(sv);
3268}
3269
79072805 3270SV *
864dbfa3 3271Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3272{
3273 register SV *sv;
1c846c1f 3274
4561caa4 3275 new_SV(sv);
79072805
LW		 3276 if (len) {
3277 sv_upgrade(sv, SVt_PV);
3278 SvGROW(sv, len + 1);
3279 }
3280 return sv;
3281}
3282
1edc1566 3283/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3284
954c1994
GS		 3285/*
3286=for apidoc sv_magic
3287
3288Adds magic to an SV.
3289
3290=cut
3291*/
3292
79072805 3293void
864dbfa3 3294Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3295{
3296 MAGIC* mg;
1c846c1f 3297
0f15f207
MB		 3298 if (SvREADONLY(sv)) {
3299 dTHR;
3280af22 3300 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3301 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3302 }
4633a7c4 3303 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3304 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3305 if (how == 't')
565764a8 3306 mg->mg_len |= 1;
463ee0b2 3307 return;
748a9306 3308 }
463ee0b2
LW		 3309 }
3310 else {
c6f8c383 3311 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3312 }
79072805
LW		 3313 Newz(702,mg, 1, MAGIC);
3314 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3315
79072805 3316 SvMAGIC(sv) = mg;
c277df42 3317 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3318 mg->mg_obj = obj;
85e6fe83 3319 else {
11343788 3320 dTHR;
8990e307 3321 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3322 mg->mg_flags |= MGf_REFCOUNTED;
3323 }
79072805 3324 mg->mg_type = how;
565764a8 3325 mg->mg_len = namlen;
1edc1566 3326 if (name)
3327 if (namlen >= 0)
3328 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3329 else if (namlen == HEf_SVKEY)
1edc1566 3330 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
1c846c1f 3331
79072805
LW		 3332 switch (how) {
3333 case 0:
22c35a8c 3334 mg->mg_virtual = &PL_vtbl_sv;
79072805 3335 break;
a0d0e21e 3336 case 'A':
22c35a8c 3337 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3338 break;
3339 case 'a':
22c35a8c 3340 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3341 break;
3342 case 'c':
3343 mg->mg_virtual = 0;
3344 break;
79072805 3345 case 'B':
22c35a8c 3346 mg->mg_virtual = &PL_vtbl_bm;
79072805 3347 break;
6cef1e77 3348 case 'D':
22c35a8c 3349 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3350 break;
3351 case 'd':
22c35a8c 3352 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3353 break;
79072805 3354 case 'E':
22c35a8c 3355 mg->mg_virtual = &PL_vtbl_env;
79072805 3356 break;
55497cff 3357 case 'f':
22c35a8c 3358 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3359 break;
79072805 3360 case 'e':
22c35a8c 3361 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3362 break;
93a17b20 3363 case 'g':
22c35a8c 3364 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3365 break;
463ee0b2 3366 case 'I':
22c35a8c 3367 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3368 break;
3369 case 'i':
22c35a8c 3370 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3371 break;
16660edb 3372 case 'k':
22c35a8c 3373 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3374 break;
79072805 3375 case 'L':
a0d0e21e 3376 SvRMAGICAL_on(sv);
93a17b20
LW		 3377 mg->mg_virtual = 0;
3378 break;
3379 case 'l':
22c35a8c 3380 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3381 break;
f93b4edd
MB		 3382#ifdef USE_THREADS
3383 case 'm':
22c35a8c 3384 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3385 break;
3386#endif /* USE_THREADS */
36477c24 3387#ifdef USE_LOCALE_COLLATE
bbce6d69 3388 case 'o':
22c35a8c 3389 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3390 break;
36477c24 3391#endif /* USE_LOCALE_COLLATE */
463ee0b2 3392 case 'P':
22c35a8c 3393 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3394 break;
3395 case 'p':
a0d0e21e 3396 case 'q':
22c35a8c 3397 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3398 break;
c277df42 3399 case 'r':
22c35a8c 3400 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3401 break;
79072805 3402 case 'S':
22c35a8c 3403 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3404 break;
3405 case 's':
22c35a8c 3406 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3407 break;
463ee0b2 3408 case 't':
22c35a8c 3409 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3410 mg->mg_len = 1;
463ee0b2 3411 break;
79072805 3412 case 'U':
22c35a8c 3413 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3414 break;
3415 case 'v':
22c35a8c 3416 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3417 break;
3418 case 'x':
22c35a8c 3419 mg->mg_virtual = &PL_vtbl_substr;
79072805 3420 break;
5f05dabc 3421 case 'y':
22c35a8c 3422 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3423 break;
79072805 3424 case '*':
22c35a8c 3425 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3426 break;
3427 case '#':
22c35a8c 3428 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3429 break;
a0d0e21e 3430 case '.':
22c35a8c 3431 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3432 break;
810b8aa5
GS		 3433 case '<':
3434 mg->mg_virtual = &PL_vtbl_backref;
3435 break;
4633a7c4
LW		 3436 case '~': /* Reserved for use by extensions not perl internals. */
3437 /* Useful for attaching extension internal data to perl vars. */
3438 /* Note that multiple extensions may clash if magical scalars */
3439 /* etc holding private data from one are passed to another. */
3440 SvRMAGICAL_on(sv);
a0d0e21e 3441 break;
79072805 3442 default:
cea2e8a9 3443 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3444 }
8990e307
LW		 3445 mg_magical(sv);
3446 if (SvGMAGICAL(sv))
3447 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3448}
3449
c461cf8f
JH		 3450/*
3451=for apidoc sv_unmagic
3452
3453Removes magic from an SV.
3454
3455=cut
3456*/
3457
463ee0b2 3458int
864dbfa3 3459Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3460{
3461 MAGIC* mg;
3462 MAGIC** mgp;
91bba347 3463 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3464 return 0;
3465 mgp = &SvMAGIC(sv);
3466 for (mg = *mgp; mg; mg = *mgp) {
3467 if (mg->mg_type == type) {
3468 MGVTBL* vtbl = mg->mg_virtual;
3469 *mgp = mg->mg_moremagic;
1d7c1841 3470 if (vtbl && vtbl->svt_free)
fc0dc3b3 3471 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3472 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3473 if (mg->mg_len >= 0)
1edc1566 3474 Safefree(mg->mg_ptr);
565764a8 3475 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3476 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3477 if (mg->mg_flags & MGf_REFCOUNTED)
3478 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3479 Safefree(mg);
3480 }
3481 else
3482 mgp = &mg->mg_moremagic;
79072805 3483 }
91bba347 3484 if (!SvMAGIC(sv)) {
463ee0b2 3485 SvMAGICAL_off(sv);
8990e307 3486 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3487 }
3488
3489 return 0;
79072805
LW		 3490}
3491
c461cf8f
JH		 3492/*
3493=for apidoc sv_rvweaken
3494
3495Weaken a reference.
3496
3497=cut
3498*/
3499
810b8aa5 3500SV *
864dbfa3 3501Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3502{
3503 SV *tsv;
3504 if (!SvOK(sv)) /* let undefs pass */
3505 return sv;
3506 if (!SvROK(sv))
cea2e8a9 3507 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3508 else if (SvWEAKREF(sv)) {
3509 dTHR;
3510 if (ckWARN(WARN_MISC))
cea2e8a9 3511 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3512 return sv;
3513 }
3514 tsv = SvRV(sv);
3515 sv_add_backref(tsv, sv);
3516 SvWEAKREF_on(sv);
1c846c1f 3517 SvREFCNT_dec(tsv);
810b8aa5
GS		 3518 return sv;
3519}
3520
3521STATIC void
cea2e8a9 3522S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3523{
3524 AV *av;
3525 MAGIC *mg;
3526 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3527 av = (AV*)mg->mg_obj;
3528 else {
3529 av = newAV();
3530 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3531 SvREFCNT_dec(av); /* for sv_magic */
3532 }
3533 av_push(av,sv);
3534}
3535
1c846c1f 3536STATIC void
cea2e8a9 3537S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3538{
3539 AV *av;
3540 SV **svp;
3541 I32 i;
3542 SV *tsv = SvRV(sv);
3543 MAGIC *mg;
3544 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3545 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3546 av = (AV *)mg->mg_obj;
3547 svp = AvARRAY(av);
3548 i = AvFILLp(av);
3549 while (i >= 0) {
3550 if (svp[i] == sv) {
3551 svp[i] = &PL_sv_undef; /* XXX */
3552 }
3553 i--;
3554 }
3555}
3556
954c1994
GS		 3557/*
3558=for apidoc sv_insert
3559
3560Inserts a string at the specified offset/length within the SV. Similar to
3561the Perl substr() function.
3562
3563=cut
3564*/
3565
79072805 3566void
864dbfa3 3567Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3568{
3569 register char *big;
3570 register char *mid;
3571 register char *midend;
3572 register char *bigend;
3573 register I32 i;
6ff81951 3574 STRLEN curlen;
1c846c1f 3575
79072805 3576
8990e307 3577 if (!bigstr)
cea2e8a9 3578 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3579 SvPV_force(bigstr, curlen);
60fa28ff 3580 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3581 if (offset + len > curlen) {
3582 SvGROW(bigstr, offset+len+1);
3583 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3584 SvCUR_set(bigstr, offset+len);
3585 }
79072805 3586
69b47968 3587 SvTAINT(bigstr);
79072805
LW		 3588 i = littlelen - len;
3589 if (i > 0) { /* string might grow */
a0d0e21e 3590 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3591 mid = big + offset + len;
3592 midend = bigend = big + SvCUR(bigstr);
3593 bigend += i;
3594 *bigend = '\0';
3595 while (midend > mid) /* shove everything down */
3596 *--bigend = *--midend;
3597 Move(little,big+offset,littlelen,char);
3598 SvCUR(bigstr) += i;
3599 SvSETMAGIC(bigstr);
3600 return;
3601 }
3602 else if (i == 0) {
463ee0b2 3603 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3604 SvSETMAGIC(bigstr);
3605 return;
3606 }
3607
463ee0b2 3608 big = SvPVX(bigstr);
79072805
LW		 3609 mid = big + offset;
3610 midend = mid + len;
3611 bigend = big + SvCUR(bigstr);
3612
3613 if (midend > bigend)
cea2e8a9 3614 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3615
3616 if (mid - big > bigend - midend) { /* faster to shorten from end */
3617 if (littlelen) {
3618 Move(little, mid, littlelen,char);
3619 mid += littlelen;
3620 }
3621 i = bigend - midend;
3622 if (i > 0) {
3623 Move(midend, mid, i,char);
3624 mid += i;
3625 }
3626 *mid = '\0';
3627 SvCUR_set(bigstr, mid - big);
3628 }
3629 /*SUPPRESS 560*/
155aba94 3630 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3631 midend -= littlelen;
3632 mid = midend;
3633 sv_chop(bigstr,midend-i);
3634 big += i;
3635 while (i--)
3636 *--midend = *--big;
3637 if (littlelen)
3638 Move(little, mid, littlelen,char);
3639 }
3640 else if (littlelen) {
3641 midend -= littlelen;
3642 sv_chop(bigstr,midend);
3643 Move(little,midend,littlelen,char);
3644 }
3645 else {
3646 sv_chop(bigstr,midend);
3647 }
3648 SvSETMAGIC(bigstr);
3649}
3650
c461cf8f
JH		 3651/*
3652=for apidoc sv_replace
3653
3654Make the first argument a copy of the second, then delete the original.
3655
3656=cut
3657*/
79072805
LW		 3658
3659void
864dbfa3 3660Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3661{
0453d815 3662 dTHR;
79072805 3663 U32 refcnt = SvREFCNT(sv);
2213622d 3664 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3665 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3666 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3667 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3668 if (SvMAGICAL(nsv))
3669 mg_free(nsv);
3670 else
3671 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3672 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3673 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3674 SvMAGICAL_off(sv);
3675 SvMAGIC(sv) = 0;
3676 }
79072805
LW		 3677 SvREFCNT(sv) = 0;
3678 sv_clear(sv);
477f5d66 3679 assert(!SvREFCNT(sv));
79072805
LW		 3680 StructCopy(nsv,sv,SV);
3681 SvREFCNT(sv) = refcnt;
1edc1566 3682 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3683 del_SV(nsv);
79072805
LW		 3684}
3685
c461cf8f
JH		 3686/*
3687=for apidoc sv_clear
3688
3689Clear an SV, making it empty. Does not free the memory used by the SV
3690itself.
3691
3692=cut
3693*/
3694
79072805 3695void
864dbfa3 3696Perl_sv_clear(pTHX_ register SV *sv)
79072805 3697{
ec12f114 3698 HV* stash;
79072805
LW		 3699 assert(sv);
3700 assert(SvREFCNT(sv) == 0);
3701
ed6116ce 3702 if (SvOBJECT(sv)) {
e858de61 3703 dTHR;
3280af22 3704 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3705 djSP;
8ebc5c01 3706 GV* destructor;
837485b6 3707 SV tmpref;
a0d0e21e 3708
837485b6
GS		 3709 Zero(&tmpref, 1, SV);
3710 sv_upgrade(&tmpref, SVt_RV);
3711 SvROK_on(&tmpref);
3712 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3713 SvREFCNT(&tmpref) = 1;
8ebc5c01 3714
4e8e7886
GS		 3715 do {
3716 stash = SvSTASH(sv);
3717 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3718 if (destructor) {
3719 ENTER;
e788e7d3 3720 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3721 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3722 EXTEND(SP, 2);
3723 PUSHMARK(SP);
837485b6 3724 PUSHs(&tmpref);
4e8e7886 3725 PUTBACK;
864dbfa3
GS		 3726 call_sv((SV*)GvCV(destructor),
3727 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3728 SvREFCNT(sv)--;
d3acc0f7 3729 POPSTACK;
3095d977 3730 SPAGAIN;
4e8e7886
GS		 3731 LEAVE;
3732 }
3733 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3734
837485b6 3735 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3736
3737 if (SvREFCNT(sv)) {
3738 if (PL_in_clean_objs)
cea2e8a9 3739 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3740 HvNAME(stash));
3741 /* DESTROY gave object new lease on life */
3742 return;
3743 }
a0d0e21e 3744 }
4e8e7886 3745
a0d0e21e 3746 if (SvOBJECT(sv)) {
4e8e7886 3747 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3748 SvOBJECT_off(sv); /* Curse the object. */
3749 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3750 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3751 }
463ee0b2 3752 }
c07a80fd 3753 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3754 mg_free(sv);
ec12f114 3755 stash = NULL;
79072805 3756 switch (SvTYPE(sv)) {
8990e307 3757 case SVt_PVIO:
df0bd2f4
GS		 3758 if (IoIFP(sv) &&
3759 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3760 IoIFP(sv) != PerlIO_stdout() &&
3761 IoIFP(sv) != PerlIO_stderr())
93578b34 3762 {
f2b5be74 3763 io_close((IO*)sv, FALSE);
93578b34 3764 }
1d7c1841 3765 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3766 PerlDir_close(IoDIRP(sv));
1d7c1841 3767 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3768 Safefree(IoTOP_NAME(sv));
3769 Safefree(IoFMT_NAME(sv));
3770 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3771 /* FALL THROUGH */
79072805 3772 case SVt_PVBM:
a0d0e21e 3773 goto freescalar;
79072805 3774 case SVt_PVCV:
748a9306 3775 case SVt_PVFM:
85e6fe83 3776 cv_undef((CV*)sv);
a0d0e21e 3777 goto freescalar;
79072805 3778 case SVt_PVHV:
85e6fe83 3779 hv_undef((HV*)sv);
a0d0e21e 3780 break;
79072805 3781 case SVt_PVAV:
85e6fe83 3782 av_undef((AV*)sv);
a0d0e21e 3783 break;
02270b4e
GS		 3784 case SVt_PVLV:
3785 SvREFCNT_dec(LvTARG(sv));
3786 goto freescalar;
a0d0e21e 3787 case SVt_PVGV:
1edc1566 3788 gp_free((GV*)sv);
a0d0e21e 3789 Safefree(GvNAME(sv));
ec12f114
JPC		 3790 /* cannot decrease stash refcount yet, as we might recursively delete
3791 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3792 of stash until current sv is completely gone.
3793 -- JohnPC, 27 Mar 1998 */
3794 stash = GvSTASH(sv);
a0d0e21e 3795 /* FALL THROUGH */
79072805 3796 case SVt_PVMG:
79072805
LW		 3797 case SVt_PVNV:
3798 case SVt_PVIV:
a0d0e21e
LW		 3799 freescalar:
3800 (void)SvOOK_off(sv);
79072805
LW		 3801 /* FALL THROUGH */
3802 case SVt_PV:
a0d0e21e 3803 case SVt_RV:
810b8aa5
GS		 3804 if (SvROK(sv)) {
3805 if (SvWEAKREF(sv))
3806 sv_del_backref(sv);
3807 else
3808 SvREFCNT_dec(SvRV(sv));
3809 }
1edc1566 3810 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3811 Safefree(SvPVX(sv));
1c846c1f
NIS		 3812 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3813 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3814 SvFAKE_off(sv);
3815 }
79072805 3816 break;
a0d0e21e 3817/*
79072805 3818 case SVt_NV:
79072805 3819 case SVt_IV:
79072805
LW		 3820 case SVt_NULL:
3821 break;
a0d0e21e 3822*/
79072805
LW		 3823 }
3824
3825 switch (SvTYPE(sv)) {
3826 case SVt_NULL:
3827 break;
79072805
LW		 3828 case SVt_IV:
3829 del_XIV(SvANY(sv));
3830 break;
3831 case SVt_NV:
3832 del_XNV(SvANY(sv));
3833 break;
ed6116ce
LW		 3834 case SVt_RV:
3835 del_XRV(SvANY(sv));
3836 break;
79072805
LW		 3837 case SVt_PV:
3838 del_XPV(SvANY(sv));
3839 break;
3840 case SVt_PVIV:
3841 del_XPVIV(SvANY(sv));
3842 break;
3843 case SVt_PVNV:
3844 del_XPVNV(SvANY(sv));
3845 break;
3846 case SVt_PVMG:
3847 del_XPVMG(SvANY(sv));
3848 break;
3849 case SVt_PVLV:
3850 del_XPVLV(SvANY(sv));
3851 break;
3852 case SVt_PVAV:
3853 del_XPVAV(SvANY(sv));
3854 break;
3855 case SVt_PVHV:
3856 del_XPVHV(SvANY(sv));
3857 break;
3858 case SVt_PVCV:
3859 del_XPVCV(SvANY(sv));
3860 break;
3861 case SVt_PVGV:
3862 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3863 /* code duplication for increased performance. */
3864 SvFLAGS(sv) &= SVf_BREAK;
3865 SvFLAGS(sv) |= SVTYPEMASK;
3866 /* decrease refcount of the stash that owns this GV, if any */
3867 if (stash)
3868 SvREFCNT_dec(stash);
3869 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3870 case SVt_PVBM:
3871 del_XPVBM(SvANY(sv));
3872 break;
3873 case SVt_PVFM:
3874 del_XPVFM(SvANY(sv));
3875 break;
8990e307
LW		 3876 case SVt_PVIO:
3877 del_XPVIO(SvANY(sv));
3878 break;
79072805 3879 }
a0d0e21e 3880 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3881 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3882}
3883
3884SV *
864dbfa3 3885Perl_sv_newref(pTHX_ SV *sv)
79072805 3886{
463ee0b2 3887 if (sv)
dce16143 3888 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3889 return sv;
3890}
3891
c461cf8f
JH		 3892/*
3893=for apidoc sv_free
3894
3895Free the memory used by an SV.
3896
3897=cut
3898*/
3899
79072805 3900void
864dbfa3 3901Perl_sv_free(pTHX_ SV *sv)
79072805 3902{
0453d815 3903 dTHR;
dce16143
MB		 3904 int refcount_is_zero;
3905
79072805
LW		 3906 if (!sv)
3907 return;
a0d0e21e
LW		 3908 if (SvREFCNT(sv) == 0) {
3909 if (SvFLAGS(sv) & SVf_BREAK)
3910 return;
3280af22 3911 if (PL_in_clean_all) /* All is fair */
1edc1566 3912 return;
d689ffdd
JP		 3913 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3914 /* make sure SvREFCNT(sv)==0 happens very seldom */
3915 SvREFCNT(sv) = (~(U32)0)/2;
3916 return;
3917 }
0453d815
PM		 3918 if (ckWARN_d(WARN_INTERNAL))
3919 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3920 return;
3921 }
dce16143
MB		 3922 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3923 if (!refcount_is_zero)
8990e307 3924 return;
463ee0b2
LW		 3925#ifdef DEBUGGING
3926 if (SvTEMP(sv)) {
0453d815 3927 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3928 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3929 "Attempt to free temp prematurely: SV 0x%"UVxf,
3930 PTR2UV(sv));
79072805 3931 return;
79072805 3932 }
463ee0b2 3933#endif
d689ffdd
JP		 3934 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3935 /* make sure SvREFCNT(sv)==0 happens very seldom */
3936 SvREFCNT(sv) = (~(U32)0)/2;
3937 return;
3938 }
79072805 3939 sv_clear(sv);
477f5d66
CS		 3940 if (! SvREFCNT(sv))
3941 del_SV(sv);
79072805
LW		 3942}
3943
954c1994
GS		 3944/*
3945=for apidoc sv_len
3946
3947Returns the length of the string in the SV. See also C<SvCUR>.
3948
3949=cut
3950*/
3951
79072805 3952STRLEN
864dbfa3 3953Perl_sv_len(pTHX_ register SV *sv)
79072805 3954{
748a9306 3955 char *junk;
463ee0b2 3956 STRLEN len;
79072805
LW		 3957
3958 if (!sv)
3959 return 0;
3960
8990e307 3961 if (SvGMAGICAL(sv))
565764a8 3962 len = mg_length(sv);
8990e307 3963 else
748a9306 3964 junk = SvPV(sv, len);
463ee0b2 3965 return len;
79072805
LW		 3966}
3967
c461cf8f
JH		 3968/*
3969=for apidoc sv_len_utf8
3970
3971Returns the number of characters in the string in an SV, counting wide
3972UTF8 bytes as a single character.
3973
3974=cut
3975*/
3976
a0ed51b3 3977STRLEN
864dbfa3 3978Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 3979{
dfe13c55
GS		 3980 U8 *s;
3981 U8 *send;
a0ed51b3
LW		 3982 STRLEN len;
3983
3984 if (!sv)
3985 return 0;
3986
3987#ifdef NOTYET
3988 if (SvGMAGICAL(sv))
3989 len = mg_length(sv);
3990 else
3991#endif
dfe13c55 3992 s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 3993 send = s + len;
3994 len = 0;
3995 while (s < send) {
3996 s += UTF8SKIP(s);
3997 len++;
3998 }
3999 return len;
4000}
4001
4002void
864dbfa3 4003Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4004{
dfe13c55
GS		 4005 U8 *start;
4006 U8 *s;
4007 U8 *send;
a0ed51b3
LW		 4008 I32 uoffset = *offsetp;
4009 STRLEN len;
4010
4011 if (!sv)
4012 return;
4013
dfe13c55 4014 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4015 send = s + len;
4016 while (s < send && uoffset--)
4017 s += UTF8SKIP(s);
bb40f870
GA		 4018 if (s >= send)
4019 s = send;
a0ed51b3
LW		 4020 *offsetp = s - start;
4021 if (lenp) {
4022 I32 ulen = *lenp;
4023 start = s;
4024 while (s < send && ulen--)
4025 s += UTF8SKIP(s);
bb40f870
GA		 4026 if (s >= send)
4027 s = send;
a0ed51b3
LW		 4028 *lenp = s - start;
4029 }
4030 return;
4031}
4032
4033void
864dbfa3 4034Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4035{
dfe13c55
GS		 4036 U8 *s;
4037 U8 *send;
a0ed51b3
LW		 4038 STRLEN len;
4039
4040 if (!sv)
4041 return;
4042
dfe13c55 4043 s = (U8*)SvPV(sv, len);
a0ed51b3 4044 if (len < *offsetp)
cea2e8a9 4045 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4046 send = s + *offsetp;
4047 len = 0;
4048 while (s < send) {
4049 s += UTF8SKIP(s);
4050 ++len;
4051 }
4052 if (s != send) {
0453d815 4053 dTHR;
1c846c1f 4054 if (ckWARN_d(WARN_UTF8))
0453d815 4055 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4056 --len;
4057 }
4058 *offsetp = len;
4059 return;
4060}
4061
954c1994
GS		 4062/*
4063=for apidoc sv_eq
4064
4065Returns a boolean indicating whether the strings in the two SVs are
4066identical.
4067
4068=cut
4069*/
4070
79072805 4071I32
e01b9e88 4072Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4073{
4074 char *pv1;
463ee0b2 4075 STRLEN cur1;
79072805 4076 char *pv2;
463ee0b2 4077 STRLEN cur2;
e01b9e88
SC		 4078 I32 eq = 0;
4079 bool pv1tmp = FALSE;
4080 bool pv2tmp = FALSE;
79072805 4081
e01b9e88 4082 if (!sv1) {
79072805
LW		 4083 pv1 = "";
4084 cur1 = 0;
4085 }
463ee0b2 4086 else
e01b9e88 4087 pv1 = SvPV(sv1, cur1);
79072805 4088
e01b9e88
SC		 4089 if (!sv2){
4090 pv2 = "";
4091 cur2 = 0;
92d29cee 4092 }
e01b9e88
SC		 4093 else
4094 pv2 = SvPV(sv2, cur2);
79072805 4095
e01b9e88
SC		 4096 /* do not utf8ize the comparands as a side-effect */
4097 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4098 if (SvUTF8(sv1)) {
4099 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4100 pv2tmp = TRUE;
4101 }
4102 else {
4103 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4104 pv1tmp = TRUE;
4105 }
4106 }
79072805 4107
e01b9e88
SC		 4108 if (cur1 == cur2)
4109 eq = memEQ(pv1, pv2, cur1);
4110
4111 if (pv1tmp)
4112 Safefree(pv1);
4113 if (pv2tmp)
4114 Safefree(pv2);
4115
4116 return eq;
79072805
LW		 4117}
4118
954c1994
GS		 4119/*
4120=for apidoc sv_cmp
4121
4122Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4123string in C<sv1> is less than, equal to, or greater than the string in
4124C<sv2>.
4125
4126=cut
4127*/
4128
79072805 4129I32
e01b9e88 4130Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4131{
560a288e
GS		 4132 STRLEN cur1, cur2;
4133 char *pv1, *pv2;
1c846c1f 4134 I32 cmp;
e01b9e88
SC		 4135 bool pv1tmp = FALSE;
4136 bool pv2tmp = FALSE;
560a288e 4137
e01b9e88
SC		 4138 if (!sv1) {
4139 pv1 = "";
560a288e
GS		 4140 cur1 = 0;
4141 }
e01b9e88
SC		 4142 else
4143 pv1 = SvPV(sv1, cur1);
560a288e 4144
e01b9e88
SC		 4145 if (!sv2){
4146 pv2 = "";
560a288e
GS		 4147 cur2 = 0;
4148 }
e01b9e88
SC		 4149 else
4150 pv2 = SvPV(sv2, cur2);
79072805 4151
e01b9e88
SC		 4152 /* do not utf8ize the comparands as a side-effect */
4153 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4154 if (SvUTF8(sv1)) {
4155 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4156 pv2tmp = TRUE;
4157 }
4158 else {
4159 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4160 pv1tmp = TRUE;
4161 }
4162 }
79072805 4163
e01b9e88
SC		 4164 if (!cur1) {
4165 cmp = cur2 ? -1 : 0;
4166 } else if (!cur2) {
4167 cmp = 1;
4168 } else {
4169 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4170
4171 if (retval) {
4172 cmp = retval < 0 ? -1 : 1;
4173 } else if (cur1 == cur2) {
4174 cmp = 0;
4175 } else {
4176 cmp = cur1 < cur2 ? -1 : 1;
4177 }
4178 }
16660edb 4179
e01b9e88
SC		 4180 if (pv1tmp)
4181 Safefree(pv1);
4182 if (pv2tmp)
4183 Safefree(pv2);
16660edb 4184
e01b9e88 4185 return cmp;
bbce6d69 4186}
16660edb 4187
c461cf8f
JH		 4188/*
4189=for apidoc sv_cmp_locale
4190
4191Compares the strings in two SVs in a locale-aware manner. See
4192L</sv_cmp_locale>
4193
4194=cut
4195*/
4196
bbce6d69 4197I32
864dbfa3 4198Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4199{
36477c24 4200#ifdef USE_LOCALE_COLLATE
16660edb 4201
bbce6d69 4202 char *pv1, *pv2;
4203 STRLEN len1, len2;
4204 I32 retval;
16660edb 4205
3280af22 4206 if (PL_collation_standard)
bbce6d69 4207 goto raw_compare;
16660edb 4208
bbce6d69 4209 len1 = 0;
8ac85365 4210 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4211 len2 = 0;
8ac85365 4212 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4213
bbce6d69 4214 if (!pv1 || !len1) {
4215 if (pv2 && len2)
4216 return -1;
4217 else
4218 goto raw_compare;
4219 }
4220 else {
4221 if (!pv2 || !len2)
4222 return 1;
4223 }
16660edb 4224
bbce6d69 4225 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4226
bbce6d69 4227 if (retval)
16660edb 4228 return retval < 0 ? -1 : 1;
4229
bbce6d69 4230 /*
4231 * When the result of collation is equality, that doesn't mean
4232 * that there are no differences -- some locales exclude some
4233 * characters from consideration. So to avoid false equalities,
4234 * we use the raw string as a tiebreaker.
4235 */
16660edb 4236
bbce6d69 4237 raw_compare:
4238 /* FALL THROUGH */
16660edb 4239
36477c24 4240#endif /* USE_LOCALE_COLLATE */
16660edb 4241
bbce6d69 4242 return sv_cmp(sv1, sv2);
4243}
79072805 4244
36477c24 4245#ifdef USE_LOCALE_COLLATE
7a4c00b4 4246/*
4247 * Any scalar variable may carry an 'o' magic that contains the
4248 * scalar data of the variable transformed to such a format that
4249 * a normal memory comparison can be used to compare the data
4250 * according to the locale settings.
4251 */
bbce6d69 4252char *
864dbfa3 4253Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4254{
7a4c00b4 4255 MAGIC *mg;
16660edb 4256
8ac85365 4257 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4258 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4259 char *s, *xf;
4260 STRLEN len, xlen;
4261
7a4c00b4 4262 if (mg)
4263 Safefree(mg->mg_ptr);
bbce6d69 4264 s = SvPV(sv, len);
4265 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4266 if (SvREADONLY(sv)) {
4267 SAVEFREEPV(xf);
4268 *nxp = xlen;
3280af22 4269 return xf + sizeof(PL_collation_ix);
ff0cee69 4270 }
7a4c00b4 4271 if (! mg) {
4272 sv_magic(sv, 0, 'o', 0, 0);
4273 mg = mg_find(sv, 'o');
4274 assert(mg);
bbce6d69 4275 }
7a4c00b4 4276 mg->mg_ptr = xf;
565764a8 4277 mg->mg_len = xlen;
7a4c00b4 4278 }
4279 else {
ff0cee69 4280 if (mg) {
4281 mg->mg_ptr = NULL;
565764a8 4282 mg->mg_len = -1;
ff0cee69 4283 }
bbce6d69 4284 }
4285 }
7a4c00b4 4286 if (mg && mg->mg_ptr) {
565764a8 4287 *nxp = mg->mg_len;
3280af22 4288 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4289 }
4290 else {
4291 *nxp = 0;
4292 return NULL;
16660edb 4293 }
79072805
LW		 4294}
4295
36477c24 4296#endif /* USE_LOCALE_COLLATE */
bbce6d69 4297
c461cf8f
JH		 4298/*
4299=for apidoc sv_gets
4300
4301Get a line from the filehandle and store it into the SV, optionally
4302appending to the currently-stored string.
4303
4304=cut
4305*/
4306
79072805 4307char *
864dbfa3 4308Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4309{
aeea060c 4310 dTHR;
c07a80fd 4311 char *rsptr;
4312 STRLEN rslen;
4313 register STDCHAR rslast;
4314 register STDCHAR *bp;
4315 register I32 cnt;
4316 I32 i;
4317
2213622d 4318 SV_CHECK_THINKFIRST(sv);
6fc92669 4319 (void)SvUPGRADE(sv, SVt_PV);
99491443 4320
ff68c719 4321 SvSCREAM_off(sv);
c07a80fd 4322
3280af22 4323 if (RsSNARF(PL_rs)) {
c07a80fd 4324 rsptr = NULL;
4325 rslen = 0;
4326 }
3280af22 4327 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4328 I32 recsize, bytesread;
4329 char *buffer;
4330
4331 /* Grab the size of the record we're getting */
3280af22 4332 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4333 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4334 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4335 /* Go yank in */
4336#ifdef VMS
4337 /* VMS wants read instead of fread, because fread doesn't respect */
4338 /* RMS record boundaries. This is not necessarily a good thing to be */
4339 /* doing, but we've got no other real choice */
4340 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4341#else
4342 bytesread = PerlIO_read(fp, buffer, recsize);
4343#endif
4344 SvCUR_set(sv, bytesread);
e670df4e 4345 buffer[bytesread] = '\0';
5b2b9c68
HM		 4346 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4347 }
3280af22 4348 else if (RsPARA(PL_rs)) {
c07a80fd 4349 rsptr = "\n\n";
4350 rslen = 2;
4351 }
4352 else
3280af22 4353 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4354 rslast = rslen ? rsptr[rslen - 1] : '\0';
4355
3280af22 4356 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4357 do { /* to make sure file boundaries work right */
760ac839 4358 if (PerlIO_eof(fp))
a0d0e21e 4359 return 0;
760ac839 4360 i = PerlIO_getc(fp);
79072805 4361 if (i != '\n') {
a0d0e21e
LW		 4362 if (i == -1)
4363 return 0;
760ac839 4364 PerlIO_ungetc(fp,i);
79072805
LW		 4365 break;
4366 }
4367 } while (i != EOF);
4368 }
c07a80fd 4369
760ac839
LW		 4370 /* See if we know enough about I/O mechanism to cheat it ! */
4371
4372 /* This used to be #ifdef test - it is made run-time test for ease
1c846c1f 4373 of abstracting out stdio interface. One call should be cheap
760ac839
LW		 4374 enough here - and may even be a macro allowing compile
4375 time optimization.
4376 */
4377
4378 if (PerlIO_fast_gets(fp)) {
4379
4380 /*
4381 * We're going to steal some values from the stdio struct
4382 * and put EVERYTHING in the innermost loop into registers.
4383 */
4384 register STDCHAR *ptr;
4385 STRLEN bpx;
4386 I32 shortbuffered;
4387
16660edb 4388#if defined(VMS) && defined(PERLIO_IS_STDIO)
4389 /* An ungetc()d char is handled separately from the regular
4390 * buffer, so we getc() it back out and stuff it in the buffer.
4391 */
4392 i = PerlIO_getc(fp);
4393 if (i == EOF) return 0;
4394 *(--((*fp)->_ptr)) = (unsigned char) i;
4395 (*fp)->_cnt++;
4396#endif
c07a80fd 4397
c2960299 4398 /* Here is some breathtakingly efficient cheating */
c07a80fd 4399
a20bf0c3 4400 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4401 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4402 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4403 if (cnt > 80 && SvLEN(sv) > append) {
4404 shortbuffered = cnt - SvLEN(sv) + append + 1;
4405 cnt -= shortbuffered;
4406 }
4407 else {
4408 shortbuffered = 0;
bbce6d69 4409 /* remember that cnt can be negative */
4410 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4411 }
4412 }
4413 else
4414 shortbuffered = 0;
c07a80fd 4415 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4416 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4417 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4418 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4419 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4420 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4421 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4422 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4423 for (;;) {
4424 screamer:
93a17b20 4425 if (cnt > 0) {
c07a80fd 4426 if (rslen) {
760ac839
LW		 4427 while (cnt > 0) { /* this | eat */
4428 cnt--;
c07a80fd 4429 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4430 goto thats_all_folks; /* screams | sed :-) */
4431 }
4432 }
4433 else {
1c846c1f
NIS		 4434 Copy(ptr, bp, cnt, char); /* this | eat */
4435 bp += cnt; /* screams | dust */
c07a80fd 4436 ptr += cnt; /* louder | sed :-) */
a5f75d66 4437 cnt = 0;
93a17b20 4438 }
79072805
LW		 4439 }
4440
748a9306 4441 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4442 cnt = shortbuffered;
4443 shortbuffered = 0;
c07a80fd 4444 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4445 SvCUR_set(sv, bpx);
4446 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4447 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4448 continue;
4449 }
4450
16660edb 4451 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4452 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4453 PTR2UV(ptr),(long)cnt));
a20bf0c3 4454 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4455 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4456 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4457 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4458 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
1c846c1f 4459 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4460 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4461 another abstraction. */
760ac839 4462 i = PerlIO_getc(fp); /* get more characters */
16660edb 4463 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4464 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4465 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4466 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4467 cnt = PerlIO_get_cnt(fp);
4468 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4469 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4470 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4471
748a9306
LW		 4472 if (i == EOF) /* all done for ever? */
4473 goto thats_really_all_folks;
4474
c07a80fd 4475 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4476 SvCUR_set(sv, bpx);
4477 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4478 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4479
760ac839 4480 *bp++ = i; /* store character from PerlIO_getc */
79072805 4481
c07a80fd 4482 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4483 goto thats_all_folks;
79072805
LW		 4484 }
4485
4486thats_all_folks:
c07a80fd 4487 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4488 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4489 goto screamer; /* go back to the fray */
79072805
LW		 4490thats_really_all_folks:
4491 if (shortbuffered)
4492 cnt += shortbuffered;
16660edb 4493 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4494 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4495 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4496 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4497 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4498 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4499 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4500 *bp = '\0';
760ac839 4501 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4502 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4503 "Screamer: done, len=%ld, string=|%.*s|\n",
4504 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4505 }
4506 else
79072805 4507 {
4d2c4e07 4508#ifndef EPOC
760ac839 4509 /*The big, slow, and stupid way */
c07a80fd 4510 STDCHAR buf[8192];
4d2c4e07
OF		 4511#else
4512 /* Need to work around EPOC SDK features */
4513 /* On WINS: MS VC5 generates calls to _chkstk, */
4514 /* if a `large' stack frame is allocated */
4515 /* gcc on MARM does not generate calls like these */
4516 STDCHAR buf[1024];
4517#endif
79072805 4518
760ac839 4519screamer2:
c07a80fd 4520 if (rslen) {
760ac839
LW		 4521 register STDCHAR *bpe = buf + sizeof(buf);
4522 bp = buf;
4523 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4524 ; /* keep reading */
4525 cnt = bp - buf;
c07a80fd 4526 }
4527 else {
760ac839 4528 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4529 /* Accomodate broken VAXC compiler, which applies U8 cast to
4530 * both args of ?: operator, causing EOF to change into 255
4531 */
4532 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4533 }
79072805
LW		 4534
4535 if (append)
760ac839 4536 sv_catpvn(sv, (char *) buf, cnt);
79072805 4537 else
760ac839 4538 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4539
4540 if (i != EOF && /* joy */
4541 (!rslen ||
4542 SvCUR(sv) < rslen ||
36477c24 4543 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4544 {
4545 append = -1;
63e4d877
CS		 4546 /*
4547 * If we're reading from a TTY and we get a short read,
4548 * indicating that the user hit his EOF character, we need
4549 * to notice it now, because if we try to read from the TTY
4550 * again, the EOF condition will disappear.
4551 *
4552 * The comparison of cnt to sizeof(buf) is an optimization
4553 * that prevents unnecessary calls to feof().
4554 *
4555 * - jik 9/25/96
4556 */
4557 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4558 goto screamer2;
79072805
LW		 4559 }
4560 }
4561
1c846c1f 4562 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4563 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4564 i = PerlIO_getc(fp);
79072805 4565 if (i != '\n') {
760ac839 4566 PerlIO_ungetc(fp,i);
79072805
LW		 4567 break;
4568 }
4569 }
4570 }
c07a80fd 4571
4572 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4573}
4574
760ac839 4575
954c1994
GS		 4576/*
4577=for apidoc sv_inc
4578
4579Auto-increment of the value in the SV.
4580
4581=cut
4582*/
4583
79072805 4584void
864dbfa3 4585Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4586{
4587 register char *d;
463ee0b2 4588 int flags;
79072805
LW		 4589
4590 if (!sv)
4591 return;
b23a5f78
GB		 4592 if (SvGMAGICAL(sv))
4593 mg_get(sv);
ed6116ce 4594 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4595 if (SvREADONLY(sv)) {
4596 dTHR;
3280af22 4597 if (PL_curcop != &PL_compiling)
cea2e8a9 4598 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4599 }
a0d0e21e 4600 if (SvROK(sv)) {
b5be31e9 4601 IV i;
9e7bc3e8
JD		 4602 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4603 return;
56431972 4604 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4605 sv_unref(sv);
4606 sv_setiv(sv, i);
a0d0e21e 4607 }
ed6116ce 4608 }
8990e307 4609 flags = SvFLAGS(sv);
8990e307 4610 if (flags & SVp_NOK) {
a0d0e21e 4611 (void)SvNOK_only(sv);
55497cff 4612 SvNVX(sv) += 1.0;
4613 return;
4614 }
4615 if (flags & SVp_IOK) {
25da4f38
IZ		 4616 if (SvIsUV(sv)) {
4617 if (SvUVX(sv) == UV_MAX)
65202027 4618 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4619 else
4620 (void)SvIOK_only_UV(sv);
4621 ++SvUVX(sv);
4622 } else {
4623 if (SvIVX(sv) == IV_MAX)
65202027 4624 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4625 else {
4626 (void)SvIOK_only(sv);
4627 ++SvIVX(sv);
1c846c1f 4628 }
55497cff 4629 }
79072805
LW		 4630 return;
4631 }
8990e307 4632 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4633 if ((flags & SVTYPEMASK) < SVt_PVNV)
4634 sv_upgrade(sv, SVt_NV);
463ee0b2 4635 SvNVX(sv) = 1.0;
a0d0e21e 4636 (void)SvNOK_only(sv);
79072805
LW		 4637 return;
4638 }
463ee0b2 4639 d = SvPVX(sv);
79072805
LW		 4640 while (isALPHA(*d)) d++;
4641 while (isDIGIT(*d)) d++;
4642 if (*d) {
097ee67d 4643 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4644 return;
4645 }
4646 d--;
463ee0b2 4647 while (d >= SvPVX(sv)) {
79072805
LW		 4648 if (isDIGIT(*d)) {
4649 if (++*d <= '9')
4650 return;
4651 *(d--) = '0';
4652 }
4653 else {
9d116dd7
JH		 4654#ifdef EBCDIC
4655 /* MKS: The original code here died if letters weren't consecutive.
4656 * at least it didn't have to worry about non-C locales. The
4657 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
1c846c1f 4658 * arranged in order (although not consecutively) and that only
9d116dd7
JH		 4659 * [A-Za-z] are accepted by isALPHA in the C locale.
4660 */
4661 if (*d != 'z' && *d != 'Z') {
4662 do { ++*d; } while (!isALPHA(*d));
4663 return;
4664 }
4665 *(d--) -= 'z' - 'a';
4666#else
79072805
LW		 4667 ++*d;
4668 if (isALPHA(*d))
4669 return;
4670 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4671#endif
79072805
LW		 4672 }
4673 }
4674 /* oh,oh, the number grew */
4675 SvGROW(sv, SvCUR(sv) + 2);
4676 SvCUR(sv)++;
463ee0b2 4677 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4678 *d = d[-1];
4679 if (isDIGIT(d[1]))
4680 *d = '1';
4681 else
4682 *d = d[1];
4683}
4684
954c1994
GS		 4685/*
4686=for apidoc sv_dec
4687
4688Auto-decrement of the value in the SV.
4689
4690=cut
4691*/
4692
79072805 4693void
864dbfa3 4694Perl_sv_dec(pTHX_ register SV *sv)
79072805 4695{
463ee0b2
LW		 4696 int flags;
4697
79072805
LW		 4698 if (!sv)
4699 return;
b23a5f78
GB		 4700 if (SvGMAGICAL(sv))
4701 mg_get(sv);
ed6116ce 4702 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4703 if (SvREADONLY(sv)) {
4704 dTHR;
3280af22 4705 if (PL_curcop != &PL_compiling)
cea2e8a9 4706 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4707 }
a0d0e21e 4708 if (SvROK(sv)) {
b5be31e9 4709 IV i;
9e7bc3e8
JD		 4710 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4711 return;
56431972 4712 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4713 sv_unref(sv);
4714 sv_setiv(sv, i);
a0d0e21e 4715 }
ed6116ce 4716 }
8990e307 4717 flags = SvFLAGS(sv);
8990e307 4718 if (flags & SVp_NOK) {
463ee0b2 4719 SvNVX(sv) -= 1.0;
a0d0e21e 4720 (void)SvNOK_only(sv);
79072805
LW		 4721 return;
4722 }
55497cff 4723 if (flags & SVp_IOK) {
25da4f38
IZ		 4724 if (SvIsUV(sv)) {
4725 if (SvUVX(sv) == 0) {
4726 (void)SvIOK_only(sv);
4727 SvIVX(sv) = -1;
4728 }
4729 else {
4730 (void)SvIOK_only_UV(sv);
4731 --SvUVX(sv);
1c846c1f 4732 }
25da4f38
IZ		 4733 } else {
4734 if (SvIVX(sv) == IV_MIN)
65202027 4735 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4736 else {
4737 (void)SvIOK_only(sv);
4738 --SvIVX(sv);
1c846c1f 4739 }
55497cff 4740 }
4741 return;
4742 }
8990e307 4743 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4744 if ((flags & SVTYPEMASK) < SVt_PVNV)
4745 sv_upgrade(sv, SVt_NV);
463ee0b2 4746 SvNVX(sv) = -1.0;
a0d0e21e 4747 (void)SvNOK_only(sv);
79072805
LW		 4748 return;
4749 }
097ee67d 4750 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4751}
4752
954c1994
GS		 4753/*
4754=for apidoc sv_mortalcopy
4755
4756Creates a new SV which is a copy of the original SV. The new SV is marked
4757as mortal.
4758
4759=cut
4760*/
4761
79072805
LW		 4762/* Make a string that will exist for the duration of the expression
4763 * evaluation. Actually, it may have to last longer than that, but
4764 * hopefully we won't free it until it has been assigned to a
4765 * permanent location. */
4766
4767SV *
864dbfa3 4768Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4769{
11343788 4770 dTHR;
463ee0b2 4771 register SV *sv;
79072805 4772
4561caa4 4773 new_SV(sv);
79072805 4774 sv_setsv(sv,oldstr);
677b06e3
GS		 4775 EXTEND_MORTAL(1);
4776 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4777 SvTEMP_on(sv);
4778 return sv;
4779}
4780
954c1994
GS		 4781/*
4782=for apidoc sv_newmortal
4783
4784Creates a new SV which is mortal. The reference count of the SV is set to 1.
4785
4786=cut
4787*/
4788
8990e307 4789SV *
864dbfa3 4790Perl_sv_newmortal(pTHX)
8990e307 4791{
11343788 4792 dTHR;
8990e307
LW		 4793 register SV *sv;
4794
4561caa4 4795 new_SV(sv);
8990e307 4796 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4797 EXTEND_MORTAL(1);
4798 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4799 return sv;
4800}
4801
954c1994
GS		 4802/*
4803=for apidoc sv_2mortal
4804
4805Marks an SV as mortal. The SV will be destroyed when the current context
4806ends.
4807
4808=cut
4809*/
4810
79072805
LW		 4811/* same thing without the copying */
4812
4813SV *
864dbfa3 4814Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4815{
11343788 4816 dTHR;
79072805
LW		 4817 if (!sv)
4818 return sv;
d689ffdd 4819 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4820 return sv;
677b06e3
GS		 4821 EXTEND_MORTAL(1);
4822 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4823 SvTEMP_on(sv);
79072805
LW		 4824 return sv;
4825}
4826
954c1994
GS		 4827/*
4828=for apidoc newSVpv
4829
4830Creates a new SV and copies a string into it. The reference count for the
4831SV is set to 1. If C<len> is zero, Perl will compute the length using
4832strlen(). For efficiency, consider using C<newSVpvn> instead.
4833
4834=cut
4835*/
4836
79072805 4837SV *
864dbfa3 4838Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4839{
463ee0b2 4840 register SV *sv;
79072805 4841
4561caa4 4842 new_SV(sv);
79072805
LW		 4843 if (!len)
4844 len = strlen(s);
4845 sv_setpvn(sv,s,len);
4846 return sv;
4847}
4848
954c1994
GS		 4849/*
4850=for apidoc newSVpvn
4851
4852Creates a new SV and copies a string into it. The reference count for the
1c846c1f 4853SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
954c1994
GS		 4854string. You are responsible for ensuring that the source string is at least
4855C<len> bytes long.
4856
4857=cut
4858*/
4859
9da1e3b5 4860SV *
864dbfa3 4861Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4862{
4863 register SV *sv;
4864
4865 new_SV(sv);
9da1e3b5
MUN		 4866 sv_setpvn(sv,s,len);
4867 return sv;
4868}
4869
1c846c1f
NIS		 4870/*
4871=for apidoc newSVpvn_share
4872
4873Creates a new SV and populates it with a string from
4874the string table. Turns on READONLY and FAKE.
4875The idea here is that as string table is used for shared hash
4876keys these strings will have SvPVX == HeKEY and hash lookup
4877will avoid string compare.
4878
4879=cut
4880*/
4881
4882SV *
4883Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4884{
4885 register SV *sv;
4886 if (!hash)
4887 PERL_HASH(hash, src, len);
4888 new_SV(sv);
4889 sv_upgrade(sv, SVt_PVIV);
4890 SvPVX(sv) = sharepvn(src, len, hash);
4891 SvCUR(sv) = len;
4892 SvUVX(sv) = hash;
4893 SvLEN(sv) = 0;
4894 SvREADONLY_on(sv);
4895 SvFAKE_on(sv);
4896 SvPOK_on(sv);
4897 return sv;
4898}
4899
cea2e8a9 4900#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4901SV *
cea2e8a9 4902Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4903{
cea2e8a9 4904 dTHX;
46fc3d4c 4905 register SV *sv;
4906 va_list args;
46fc3d4c 4907 va_start(args, pat);
c5be433b 4908 sv = vnewSVpvf(pat, &args);
46fc3d4c 4909 va_end(args);
4910 return sv;
4911}
cea2e8a9 4912#endif
46fc3d4c 4913
954c1994
GS		 4914/*
4915=for apidoc newSVpvf
4916
4917Creates a new SV an initialize it with the string formatted like
4918C<sprintf>.
4919
4920=cut
4921*/
4922
cea2e8a9
GS		 4923SV *
4924Perl_newSVpvf(pTHX_ const char* pat, ...)
4925{
4926 register SV *sv;
4927 va_list args;
cea2e8a9 4928 va_start(args, pat);
c5be433b 4929 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4930 va_end(args);
4931 return sv;
4932}
46fc3d4c 4933
79072805 4934SV *
c5be433b
GS		 4935Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4936{
4937 register SV *sv;
4938 new_SV(sv);
4939 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4940 return sv;
4941}
4942
954c1994
GS		 4943/*
4944=for apidoc newSVnv
4945
4946Creates a new SV and copies a floating point value into it.
4947The reference count for the SV is set to 1.
4948
4949=cut
4950*/
4951
c5be433b 4952SV *
65202027 4953Perl_newSVnv(pTHX_ NV n)
79072805 4954{
463ee0b2 4955 register SV *sv;
79072805 4956
4561caa4 4957 new_SV(sv);
79072805
LW		 4958 sv_setnv(sv,n);
4959 return sv;
4960}
4961
954c1994
GS		 4962/*
4963=for apidoc newSViv
4964
4965Creates a new SV and copies an integer into it. The reference count for the
4966SV is set to 1.
4967
4968=cut
4969*/
4970
79072805 4971SV *
864dbfa3 4972Perl_newSViv(pTHX_ IV i)
79072805 4973{
463ee0b2 4974 register SV *sv;
79072805 4975
4561caa4 4976 new_SV(sv);
79072805
LW		 4977 sv_setiv(sv,i);
4978 return sv;
4979}
4980
954c1994 4981/*
1a3327fb
JH		 4982=for apidoc newSVuv
4983
4984Creates a new SV and copies an unsigned integer into it.
4985The reference count for the SV is set to 1.
4986
4987=cut
4988*/
4989
4990SV *
4991Perl_newSVuv(pTHX_ UV u)
4992{
4993 register SV *sv;
4994
4995 new_SV(sv);
4996 sv_setuv(sv,u);
4997 return sv;
4998}
4999
5000/*
954c1994
GS		 5001=for apidoc newRV_noinc
5002
5003Creates an RV wrapper for an SV. The reference count for the original
5004SV is B<not> incremented.
5005
5006=cut
5007*/
5008
2304df62 5009SV *
864dbfa3 5010Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5011{
11343788 5012 dTHR;
2304df62
AD		 5013 register SV *sv;
5014
4561caa4 5015 new_SV(sv);
2304df62 5016 sv_upgrade(sv, SVt_RV);
76e3520e 5017 SvTEMP_off(tmpRef);
d689ffdd 5018 SvRV(sv) = tmpRef;
2304df62 5019 SvROK_on(sv);
2304df62
AD		 5020 return sv;
5021}
5022
954c1994 5023/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5024SV *
864dbfa3 5025Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5026{
5f6447b6 5027 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5028}
5f05dabc 5029
954c1994
GS		 5030/*
5031=for apidoc newSVsv
5032
5033Creates a new SV which is an exact duplicate of the original SV.
5034
5035=cut
5036*/
5037
79072805
LW		 5038/* make an exact duplicate of old */
5039
5040SV *
864dbfa3 5041Perl_newSVsv(pTHX_ register SV *old)
79072805 5042{
0453d815 5043 dTHR;
463ee0b2 5044 register SV *sv;
79072805
LW		 5045
5046 if (!old)
5047 return Nullsv;
8990e307 5048 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5049 if (ckWARN_d(WARN_INTERNAL))
5050 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5051 return Nullsv;
5052 }
4561caa4 5053 new_SV(sv);
ff68c719 5054 if (SvTEMP(old)) {
5055 SvTEMP_off(old);
463ee0b2 5056 sv_setsv(sv,old);
ff68c719 5057 SvTEMP_on(old);
79072805
LW		 5058 }
5059 else
463ee0b2
LW		 5060 sv_setsv(sv,old);
5061 return sv;
79072805
LW		 5062}
5063
5064void
864dbfa3 5065Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5066{
5067 register HE *entry;
5068 register GV *gv;
5069 register SV *sv;
5070 register I32 i;
5071 register PMOP *pm;
5072 register I32 max;
4802d5d7 5073 char todo[PERL_UCHAR_MAX+1];
79072805 5074
49d8d3a1
MB		 5075 if (!stash)
5076 return;
5077
79072805
LW		 5078 if (!*s) { /* reset ?? searches */
5079 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5080 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5081 }
5082 return;
5083 }
5084
5085 /* reset variables */
5086
5087 if (!HvARRAY(stash))
5088 return;
463ee0b2
LW		 5089
5090 Zero(todo, 256, char);
79072805 5091 while (*s) {
4802d5d7 5092 i = (unsigned char)*s;
79072805
LW		 5093 if (s[1] == '-') {
5094 s += 2;
5095 }
4802d5d7 5096 max = (unsigned char)*s++;
79072805 5097 for ( ; i <= max; i++) {
463ee0b2
LW		 5098 todo[i] = 1;
5099 }
a0d0e21e 5100 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5101 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5102 entry;
5103 entry = HeNEXT(entry))
5104 {
1edc1566 5105 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5106 continue;
1edc1566 5107 gv = (GV*)HeVAL(entry);
79072805 5108 sv = GvSV(gv);
9e35f4b3
GS		 5109 if (SvTHINKFIRST(sv)) {
5110 if (!SvREADONLY(sv) && SvROK(sv))
5111 sv_unref(sv);
5112 continue;
5113 }
a0d0e21e 5114 (void)SvOK_off(sv);
79072805
LW		 5115 if (SvTYPE(sv) >= SVt_PV) {
5116 SvCUR_set(sv, 0);
463ee0b2
LW		 5117 if (SvPVX(sv) != Nullch)
5118 *SvPVX(sv) = '\0';
44a8e56a 5119 SvTAINT(sv);
79072805
LW		 5120 }
5121 if (GvAV(gv)) {
5122 av_clear(GvAV(gv));
5123 }
44a8e56a 5124 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5125 hv_clear(GvHV(gv));
ed79a026 5126#if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
3280af22 5127 if (gv == PL_envgv)
79072805 5128 environ[0] = Nullch;
a0d0e21e 5129#endif
79072805
LW		 5130 }
5131 }
5132 }
5133 }
5134}
5135
46fc3d4c 5136IO*
864dbfa3 5137Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5138{
5139 IO* io;
5140 GV* gv;
2d8e6c8d 5141 STRLEN n_a;
46fc3d4c 5142
5143 switch (SvTYPE(sv)) {
5144 case SVt_PVIO:
5145 io = (IO*)sv;
5146 break;
5147 case SVt_PVGV:
5148 gv = (GV*)sv;
5149 io = GvIO(gv);
5150 if (!io)
cea2e8a9 5151 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5152 break;
5153 default:
5154 if (!SvOK(sv))
cea2e8a9 5155 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5156 if (SvROK(sv))
5157 return sv_2io(SvRV(sv));
2d8e6c8d 5158 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5159 if (gv)
5160 io = GvIO(gv);
5161 else
5162 io = 0;
5163 if (!io)
cea2e8a9 5164 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5165 break;
5166 }
5167 return io;
5168}
5169
79072805 5170CV *
864dbfa3 5171Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5172{
5173 GV *gv;
5174 CV *cv;
2d8e6c8d 5175 STRLEN n_a;
79072805
LW		 5176
5177 if (!sv)
93a17b20 5178 return *gvp = Nullgv, Nullcv;
79072805 5179 switch (SvTYPE(sv)) {
79072805
LW		 5180 case SVt_PVCV:
5181 *st = CvSTASH(sv);
5182 *gvp = Nullgv;
5183 return (CV*)sv;
5184 case SVt_PVHV:
5185 case SVt_PVAV:
5186 *gvp = Nullgv;
5187 return Nullcv;
8990e307
LW		 5188 case SVt_PVGV:
5189 gv = (GV*)sv;
a0d0e21e 5190 *gvp = gv;
8990e307
LW		 5191 *st = GvESTASH(gv);
5192 goto fix_gv;
5193
79072805 5194 default:
a0d0e21e
LW		 5195 if (SvGMAGICAL(sv))
5196 mg_get(sv);
5197 if (SvROK(sv)) {
0f4592ef 5198 dTHR;
f5284f61
IZ		 5199 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5200 tryAMAGICunDEREF(to_cv);
5201
62f274bf
GS		 5202 sv = SvRV(sv);
5203 if (SvTYPE(sv) == SVt_PVCV) {
5204 cv = (CV*)sv;
5205 *gvp = Nullgv;
5206 *st = CvSTASH(cv);
5207 return cv;
5208 }
5209 else if(isGV(sv))
5210 gv = (GV*)sv;
5211 else
cea2e8a9 5212 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5213 }
62f274bf 5214 else if (isGV(sv))
79072805
LW		 5215 gv = (GV*)sv;
5216 else
2d8e6c8d 5217 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5218 *gvp = gv;
5219 if (!gv)
5220 return Nullcv;
5221 *st = GvESTASH(gv);
8990e307 5222 fix_gv:
8ebc5c01 5223 if (lref && !GvCVu(gv)) {
4633a7c4 5224 SV *tmpsv;
748a9306 5225 ENTER;
4633a7c4 5226 tmpsv = NEWSV(704,0);
16660edb 5227 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5228 /* XXX this is probably not what they think they're getting.
5229 * It has the same effect as "sub name;", i.e. just a forward
5230 * declaration! */
774d564b 5231 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5232 newSVOP(OP_CONST, 0, tmpsv),
5233 Nullop,
8990e307 5234 Nullop);
748a9306 5235 LEAVE;
8ebc5c01 5236 if (!GvCVu(gv))
cea2e8a9 5237 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5238 }
8ebc5c01 5239 return GvCVu(gv);
79072805
LW		 5240 }
5241}
5242
c461cf8f
JH		 5243/*
5244=for apidoc sv_true
5245
5246Returns true if the SV has a true value by Perl's rules.
5247
5248=cut
5249*/
5250
79072805 5251I32
864dbfa3 5252Perl_sv_true(pTHX_ register SV *sv)
79072805 5253{
4e35701f 5254 dTHR;
8990e307
LW		 5255 if (!sv)
5256 return 0;
79072805 5257 if (SvPOK(sv)) {
4e35701f
NIS		 5258 register XPV* tXpv;
5259 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5260 (tXpv->xpv_cur > 1 ||
4e35701f 5261 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5262 return 1;
5263 else
5264 return 0;
5265 }
5266 else {
5267 if (SvIOK(sv))
463ee0b2 5268 return SvIVX(sv) != 0;
79072805
LW		 5269 else {
5270 if (SvNOK(sv))
463ee0b2 5271 return SvNVX(sv) != 0.0;
79072805 5272 else
463ee0b2 5273 return sv_2bool(sv);
79072805
LW		 5274 }
5275 }
5276}
79072805 5277
ff68c719 5278IV
864dbfa3 5279Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5280{
25da4f38
IZ		 5281 if (SvIOK(sv)) {
5282 if (SvIsUV(sv))
5283 return (IV)SvUVX(sv);
ff68c719 5284 return SvIVX(sv);
25da4f38 5285 }
ff68c719 5286 return sv_2iv(sv);
85e6fe83 5287}
85e6fe83 5288
ff68c719 5289UV
864dbfa3 5290Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5291{
25da4f38
IZ		 5292 if (SvIOK(sv)) {
5293 if (SvIsUV(sv))
5294 return SvUVX(sv);
5295 return (UV)SvIVX(sv);
5296 }
ff68c719 5297 return sv_2uv(sv);
5298}
85e6fe83 5299
65202027 5300NV
864dbfa3 5301Perl_sv_nv(pTHX_ register SV *sv)
79072805 5302{
ff68c719 5303 if (SvNOK(sv))
5304 return SvNVX(sv);
5305 return sv_2nv(sv);
79072805 5306}
79072805 5307
79072805 5308char *
864dbfa3 5309Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5310{
5311 STRLEN n_a;
5312
5313 if (SvPOK(sv))
5314 return SvPVX(sv);
5315
5316 return sv_2pv(sv, &n_a);
5317}
5318
5319char *
864dbfa3 5320Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5321{
85e6fe83
LW		 5322 if (SvPOK(sv)) {
5323 *lp = SvCUR(sv);
a0d0e21e 5324 return SvPVX(sv);
85e6fe83 5325 }
463ee0b2 5326 return sv_2pv(sv, lp);
79072805 5327}
79072805 5328
c461cf8f
JH		 5329/*
5330=for apidoc sv_pvn_force
5331
5332Get a sensible string out of the SV somehow.
5333
5334=cut
5335*/
5336
a0d0e21e 5337char *
864dbfa3 5338Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5339{
5340 char *s;
5341
6fc92669
GS		 5342 if (SvTHINKFIRST(sv) && !SvROK(sv))
5343 sv_force_normal(sv);
1c846c1f 5344
a0d0e21e
LW		 5345 if (SvPOK(sv)) {
5346 *lp = SvCUR(sv);
5347 }
5348 else {
748a9306 5349 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5350 dTHR;
cea2e8a9 5351 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5352 PL_op_name[PL_op->op_type]);
a0d0e21e 5353 }
4633a7c4
LW		 5354 else
5355 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5356 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5357 STRLEN len = *lp;
1c846c1f 5358
a0d0e21e
LW		 5359 if (SvROK(sv))
5360 sv_unref(sv);
5361 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5362 SvGROW(sv, len + 1);
5363 Move(s,SvPVX(sv),len,char);
5364 SvCUR_set(sv, len);
5365 *SvEND(sv) = '\0';
5366 }
5367 if (!SvPOK(sv)) {
5368 SvPOK_on(sv); /* validate pointer */
5369 SvTAINT(sv);
1d7c1841
GS		 5370 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5371 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5372 }
5373 }
5374 return SvPVX(sv);
5375}
5376
5377char *
7340a771
GS		 5378Perl_sv_pvbyte(pTHX_ SV *sv)
5379{
5380 return sv_pv(sv);
5381}
5382
5383char *
5384Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5385{
5386 return sv_pvn(sv,lp);
5387}
5388
5389char *
5390Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5391{
5392 return sv_pvn_force(sv,lp);
5393}
5394
5395char *
5396Perl_sv_pvutf8(pTHX_ SV *sv)
5397{
560a288e 5398 sv_utf8_upgrade(sv);
7340a771
GS		 5399 return sv_pv(sv);
5400}
5401
5402char *
5403Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5404{
560a288e 5405 sv_utf8_upgrade(sv);
7340a771
GS		 5406 return sv_pvn(sv,lp);
5407}
5408
c461cf8f
JH		 5409/*
5410=for apidoc sv_pvutf8n_force
5411
5412Get a sensible UTF8-encoded string out of the SV somehow. See
5413L</sv_pvn_force>.
5414
5415=cut
5416*/
5417
7340a771
GS		 5418char *
5419Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5420{
560a288e 5421 sv_utf8_upgrade(sv);
7340a771
GS		 5422 return sv_pvn_force(sv,lp);
5423}
5424
c461cf8f
JH		 5425/*
5426=for apidoc sv_reftype
5427
5428Returns a string describing what the SV is a reference to.
5429
5430=cut
5431*/
5432
7340a771 5433char *
864dbfa3 5434Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5435{
5436 if (ob && SvOBJECT(sv))
5437 return HvNAME(SvSTASH(sv));
5438 else {
5439 switch (SvTYPE(sv)) {
5440 case SVt_NULL:
5441 case SVt_IV:
5442 case SVt_NV:
5443 case SVt_RV:
5444 case SVt_PV:
5445 case SVt_PVIV:
5446 case SVt_PVNV:
5447 case SVt_PVMG:
5448 case SVt_PVBM:
5449 if (SvROK(sv))
5450 return "REF";
5451 else
5452 return "SCALAR";
5453 case SVt_PVLV: return "LVALUE";
5454 case SVt_PVAV: return "ARRAY";
5455 case SVt_PVHV: return "HASH";
5456 case SVt_PVCV: return "CODE";
5457 case SVt_PVGV: return "GLOB";
1d2dff63 5458 case SVt_PVFM: return "FORMAT";
27f9d8f3 5459 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5460 default: return "UNKNOWN";
5461 }
5462 }
5463}
5464
954c1994
GS		 5465/*
5466=for apidoc sv_isobject
5467
5468Returns a boolean indicating whether the SV is an RV pointing to a blessed
5469object. If the SV is not an RV, or if the object is not blessed, then this
5470will return false.
5471
5472=cut
5473*/
5474
463ee0b2 5475int
864dbfa3 5476Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5477{
68dc0745 5478 if (!sv)
5479 return 0;
5480 if (SvGMAGICAL(sv))
5481 mg_get(sv);
85e6fe83
LW		 5482 if (!SvROK(sv))
5483 return 0;
5484 sv = (SV*)SvRV(sv);
5485 if (!SvOBJECT(sv))
5486 return 0;
5487 return 1;
5488}
5489
954c1994
GS		 5490/*
5491=for apidoc sv_isa
5492
5493Returns a boolean indicating whether the SV is blessed into the specified
5494class. This does not check for subtypes; use C<sv_derived_from> to verify
5495an inheritance relationship.
5496
5497=cut
5498*/
5499
85e6fe83 5500int
864dbfa3 5501Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5502{
68dc0745 5503 if (!sv)
5504 return 0;
5505 if (SvGMAGICAL(sv))
5506 mg_get(sv);
ed6116ce 5507 if (!SvROK(sv))
463ee0b2 5508 return 0;
ed6116ce
LW		 5509 sv = (SV*)SvRV(sv);
5510 if (!SvOBJECT(sv))
463ee0b2
LW		 5511 return 0;
5512
5513 return strEQ(HvNAME(SvSTASH(sv)), name);
5514}
5515
954c1994
GS		 5516/*
5517=for apidoc newSVrv
5518
5519Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5520it will be upgraded to one. If C<classname> is non-null then the new SV will
5521be blessed in the specified package. The new SV is returned and its
5522reference count is 1.
5523
5524=cut
5525*/
5526
463ee0b2 5527SV*
864dbfa3 5528Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5529{
11343788 5530 dTHR;
463ee0b2
LW		 5531 SV *sv;
5532
4561caa4 5533 new_SV(sv);
51cf62d8 5534
2213622d 5535 SV_CHECK_THINKFIRST(rv);
51cf62d8 5536 SvAMAGIC_off(rv);
51cf62d8 5537
0199fce9
JD		 5538 if (SvTYPE(rv) >= SVt_PVMG) {
5539 U32 refcnt = SvREFCNT(rv);
5540 SvREFCNT(rv) = 0;
5541 sv_clear(rv);
5542 SvFLAGS(rv) = 0;
5543 SvREFCNT(rv) = refcnt;
5544 }
5545
51cf62d8 5546 if (SvTYPE(rv) < SVt_RV)
0199fce9
JD		 5547 sv_upgrade(rv, SVt_RV);
5548 else if (SvTYPE(rv) > SVt_RV) {
5549 (void)SvOOK_off(rv);
5550 if (SvPVX(rv) && SvLEN(rv))
5551 Safefree(SvPVX(rv));
5552 SvCUR_set(rv, 0);
5553 SvLEN_set(rv, 0);
5554 }
51cf62d8
OT		 5555
5556 (void)SvOK_off(rv);
053fc874 5557 SvRV(rv) = sv;
ed6116ce 5558 SvROK_on(rv);
463ee0b2 5559
a0d0e21e
LW		 5560 if (classname) {
5561 HV* stash = gv_stashpv(classname, TRUE);
5562 (void)sv_bless(rv, stash);
5563 }
5564 return sv;
5565}
5566
954c1994
GS		 5567/*
5568=for apidoc sv_setref_pv
5569
5570Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5571argument will be upgraded to an RV. That RV will be modified to point to
5572the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5573into the SV. The C<classname> argument indicates the package for the
5574blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5575will be returned and will have a reference count of 1.
5576
5577Do not use with other Perl types such as HV, AV, SV, CV, because those
5578objects will become corrupted by the pointer copy process.
5579
5580Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5581
5582=cut
5583*/
5584
a0d0e21e 5585SV*
864dbfa3 5586Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5587{
189b2af5 5588 if (!pv) {
3280af22 5589 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5590 SvSETMAGIC(rv);
5591 }
a0d0e21e 5592 else
56431972 5593 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5594 return rv;
5595}
5596
954c1994
GS		 5597/*
5598=for apidoc sv_setref_iv
5599
5600Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5601argument will be upgraded to an RV. That RV will be modified to point to
5602the new SV. The C<classname> argument indicates the package for the
5603blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5604will be returned and will have a reference count of 1.
5605
5606=cut
5607*/
5608
a0d0e21e 5609SV*
864dbfa3 5610Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5611{
5612 sv_setiv(newSVrv(rv,classname), iv);
5613 return rv;
5614}
5615
954c1994
GS		 5616/*
5617=for apidoc sv_setref_nv
5618
5619Copies a double into a new SV, optionally blessing the SV. The C<rv>
5620argument will be upgraded to an RV. That RV will be modified to point to
5621the new SV. The C<classname> argument indicates the package for the
5622blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5623will be returned and will have a reference count of 1.
5624
5625=cut
5626*/
5627
a0d0e21e 5628SV*
65202027 5629Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5630{
5631 sv_setnv(newSVrv(rv,classname), nv);
5632 return rv;
5633}
463ee0b2 5634
954c1994
GS		 5635/*
5636=for apidoc sv_setref_pvn
5637
5638Copies a string into a new SV, optionally blessing the SV. The length of the
5639string must be specified with C<n>. The C<rv> argument will be upgraded to
5640an RV. That RV will be modified to point to the new SV. The C<classname>
5641argument indicates the package for the blessing. Set C<classname> to
5642C<Nullch> to avoid the blessing. The new SV will be returned and will have
5643a reference count of 1.
5644
5645Note that C<sv_setref_pv> copies the pointer while this copies the string.
5646
5647=cut
5648*/
5649
a0d0e21e 5650SV*
864dbfa3 5651Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5652{
5653 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5654 return rv;
5655}
5656
954c1994
GS		 5657/*
5658=for apidoc sv_bless
5659
5660Blesses an SV into a specified package. The SV must be an RV. The package
5661must be designated by its stash (see C<gv_stashpv()>). The reference count
5662of the SV is unaffected.
5663
5664=cut
5665*/
5666
a0d0e21e 5667SV*
864dbfa3 5668Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5669{
11343788 5670 dTHR;
76e3520e 5671 SV *tmpRef;
a0d0e21e 5672 if (!SvROK(sv))
cea2e8a9 5673 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5674 tmpRef = SvRV(sv);
5675 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5676 if (SvREADONLY(tmpRef))
cea2e8a9 5677 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5678 if (SvOBJECT(tmpRef)) {
5679 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5680 --PL_sv_objcount;
76e3520e 5681 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5682 }
a0d0e21e 5683 }
76e3520e
GS		 5684 SvOBJECT_on(tmpRef);
5685 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5686 ++PL_sv_objcount;
76e3520e
GS		 5687 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5688 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5689
2e3febc6
CS		 5690 if (Gv_AMG(stash))
5691 SvAMAGIC_on(sv);
5692 else
5693 SvAMAGIC_off(sv);
a0d0e21e
LW		 5694
5695 return sv;
5696}
5697
76e3520e 5698STATIC void
cea2e8a9 5699S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5700{
850fabdf
GS		 5701 void *xpvmg;
5702
a0d0e21e
LW		 5703 assert(SvTYPE(sv) == SVt_PVGV);
5704 SvFAKE_off(sv);
5705 if (GvGP(sv))
1edc1566 5706 gp_free((GV*)sv);
e826b3c7
GS		 5707 if (GvSTASH(sv)) {
5708 SvREFCNT_dec(GvSTASH(sv));
5709 GvSTASH(sv) = Nullhv;
5710 }
a0d0e21e
LW		 5711 sv_unmagic(sv, '*');
5712 Safefree(GvNAME(sv));
a5f75d66 5713 GvMULTI_off(sv);
850fabdf
GS		 5714
5715 /* need to keep SvANY(sv) in the right arena */
5716 xpvmg = new_XPVMG();
5717 StructCopy(SvANY(sv), xpvmg, XPVMG);
5718 del_XPVGV(SvANY(sv));
5719 SvANY(sv) = xpvmg;
5720
a0d0e21e
LW		 5721 SvFLAGS(sv) &= ~SVTYPEMASK;
5722 SvFLAGS(sv) |= SVt_PVMG;
5723}
5724
954c1994
GS		 5725/*
5726=for apidoc sv_unref
5727
5728Unsets the RV status of the SV, and decrements the reference count of
5729whatever was being referenced by the RV. This can almost be thought of
5730as a reversal of C<newSVrv>. See C<SvROK_off>.
5731
5732=cut
5733*/
5734
ed6116ce 5735void
864dbfa3 5736Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5737{
a0d0e21e 5738 SV* rv = SvRV(sv);
810b8aa5
GS		 5739
5740 if (SvWEAKREF(sv)) {
5741 sv_del_backref(sv);
5742 SvWEAKREF_off(sv);
5743 SvRV(sv) = 0;
5744 return;
5745 }
ed6116ce
LW		 5746 SvRV(sv) = 0;
5747 SvROK_off(sv);
4633a7c4
LW		 5748 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5749 SvREFCNT_dec(rv);
8e07c86e 5750 else
4633a7c4 5751 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5752}
8990e307 5753
bbce6d69 5754void
864dbfa3 5755Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5756{
5757 sv_magic((sv), Nullsv, 't', Nullch, 0);
5758}
5759
5760void
864dbfa3 5761Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5762{
13f57bf8 5763 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5764 MAGIC *mg = mg_find(sv, 't');
5765 if (mg)
565764a8 5766 mg->mg_len &= ~1;
36477c24 5767 }
bbce6d69 5768}
5769
5770bool
864dbfa3 5771Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5772{
13f57bf8 5773 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5774 MAGIC *mg = mg_find(sv, 't');
155aba94 5775 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5776 return TRUE;
5777 }
5778 return FALSE;
bbce6d69 5779}
5780
954c1994
GS		 5781/*
5782=for apidoc sv_setpviv
5783
5784Copies an integer into the given SV, also updating its string value.
5785Does not handle 'set' magic. See C<sv_setpviv_mg>.
5786
5787=cut
5788*/
5789
84902520 5790void
864dbfa3 5791Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5792{
25da4f38
IZ		 5793 char buf[TYPE_CHARS(UV)];
5794 char *ebuf;
5795 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5796
25da4f38 5797 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5798}
5799
ef50df4b 5800
954c1994
GS		 5801/*
5802=for apidoc sv_setpviv_mg
5803
5804Like C<sv_setpviv>, but also handles 'set' magic.
5805
5806=cut
5807*/
5808
ef50df4b 5809void
864dbfa3 5810Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5811{
25da4f38
IZ		 5812 char buf[TYPE_CHARS(UV)];
5813 char *ebuf;
5814 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5815
5816 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5817 SvSETMAGIC(sv);
5818}
5819
cea2e8a9
GS		 5820#if defined(PERL_IMPLICIT_CONTEXT)
5821void
5822Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5823{
5824 dTHX;
5825 va_list args;
5826 va_start(args, pat);
c5be433b 5827 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5828 va_end(args);
5829}
5830
5831
5832void
5833Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5834{
5835 dTHX;
5836 va_list args;
5837 va_start(args, pat);
c5be433b 5838 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5839 va_end(args);
cea2e8a9
GS		 5840}
5841#endif
5842
954c1994
GS		 5843/*
5844=for apidoc sv_setpvf
5845
5846Processes its arguments like C<sprintf> and sets an SV to the formatted
5847output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5848
5849=cut
5850*/
5851
46fc3d4c 5852void
864dbfa3 5853Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5854{
5855 va_list args;
46fc3d4c 5856 va_start(args, pat);
c5be433b 5857 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5858 va_end(args);
5859}
5860
c5be433b
GS		 5861void
5862Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5863{
5864 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5865}
ef50df4b 5866
954c1994
GS		 5867/*
5868=for apidoc sv_setpvf_mg
5869
5870Like C<sv_setpvf>, but also handles 'set' magic.
5871
5872=cut
5873*/
5874
ef50df4b 5875void
864dbfa3 5876Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5877{
5878 va_list args;
ef50df4b 5879 va_start(args, pat);
c5be433b 5880 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5881 va_end(args);
c5be433b
GS		 5882}
5883
5884void
5885Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5886{
5887 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5888 SvSETMAGIC(sv);
5889}
5890
cea2e8a9
GS		 5891#if defined(PERL_IMPLICIT_CONTEXT)
5892void
5893Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5894{
5895 dTHX;
5896 va_list args;
5897 va_start(args, pat);
c5be433b 5898 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5899 va_end(args);
5900}
5901
5902void
5903Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5904{
5905 dTHX;
5906 va_list args;
5907 va_start(args, pat);
c5be433b 5908 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5909 va_end(args);
cea2e8a9
GS		 5910}
5911#endif
5912
954c1994
GS		 5913/*
5914=for apidoc sv_catpvf
5915
5916Processes its arguments like C<sprintf> and appends the formatted output
5917to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5918typically be called after calling this function to handle 'set' magic.
5919
5920=cut
5921*/
5922
46fc3d4c 5923void
864dbfa3 5924Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5925{
5926 va_list args;
46fc3d4c 5927 va_start(args, pat);
c5be433b 5928 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5929 va_end(args);
5930}
5931
ef50df4b 5932void
c5be433b
GS		 5933Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5934{
5935 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5936}
5937
954c1994
GS		 5938/*
5939=for apidoc sv_catpvf_mg
5940
5941Like C<sv_catpvf>, but also handles 'set' magic.
5942
5943=cut
5944*/
5945
c5be433b 5946void
864dbfa3 5947Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5948{
5949 va_list args;
ef50df4b 5950 va_start(args, pat);
c5be433b 5951 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5952 va_end(args);
c5be433b
GS		 5953}
5954
5955void
5956Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5957{
5958 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5959 SvSETMAGIC(sv);
5960}
5961
954c1994
GS		 5962/*
5963=for apidoc sv_vsetpvfn
5964
5965Works like C<vcatpvfn> but copies the text into the SV instead of
5966appending it.
5967
5968=cut
5969*/
5970
46fc3d4c 5971void
7d5ea4e7 5972Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5973{
5974 sv_setpvn(sv, "", 0);
7d5ea4e7 5975 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5976}
5977
954c1994
GS		 5978/*
5979=for apidoc sv_vcatpvfn
5980
5981Processes its arguments like C<vsprintf> and appends the formatted output
5982to an SV. Uses an array of SVs if the C style variable argument list is
5983missing (NULL). When running with taint checks enabled, indicates via
5984C<maybe_tainted> if results are untrustworthy (often due to the use of
5985locales).
5986
5987=cut
5988*/
5989
46fc3d4c 5990void
7d5ea4e7 5991Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5992{
e858de61 5993 dTHR;
46fc3d4c 5994 char *p;
5995 char *q;
5996 char *patend;
fc36a67e 5997 STRLEN origlen;
46fc3d4c 5998 I32 svix = 0;
c635e13b 5999 static char nullstr[] = "(null)";
7e2040f0 6000 SV *argsv;
46fc3d4c 6001
6002 /* no matter what, this is a string now */
fc36a67e 6003 (void)SvPV_force(sv, origlen);
46fc3d4c 6004
fc36a67e 6005 /* special-case "", "%s", and "%_" */
46fc3d4c 6006 if (patlen == 0)
6007 return;
fc36a67e 6008 if (patlen == 2 && pat[0] == '%') {
6009 switch (pat[1]) {
6010 case 's':
c635e13b 6011 if (args) {
6012 char *s = va_arg(*args, char*);
6013 sv_catpv(sv, s ? s : nullstr);
6014 }
7e2040f0 6015 else if (svix < svmax) {
fc36a67e 6016 sv_catsv(sv, *svargs);
7e2040f0
GS		 6017 if (DO_UTF8(*svargs))
6018 SvUTF8_on(sv);
6019 }
fc36a67e 6020 return;
6021 case '_':
6022 if (args) {
7e2040f0
GS		 6023 argsv = va_arg(*args, SV*);
6024 sv_catsv(sv, argsv);
6025 if (DO_UTF8(argsv))
6026 SvUTF8_on(sv);
fc36a67e 6027 return;
6028 }
6029 /* See comment on '_' below */
6030 break;
6031 }
46fc3d4c 6032 }
6033
6034 patend = (char*)pat + patlen;
6035 for (p = (char*)pat; p < patend; p = q) {
6036 bool alt = FALSE;
6037 bool left = FALSE;
b22c7a20
GS		 6038 bool vectorize = FALSE;
6039 bool utf = FALSE;
46fc3d4c 6040 char fill = ' ';
6041 char plus = 0;
6042 char intsize = 0;
6043 STRLEN width = 0;
fc36a67e 6044 STRLEN zeros = 0;
46fc3d4c 6045 bool has_precis = FALSE;
6046 STRLEN precis = 0;
7e2040f0 6047 bool is_utf = FALSE;
46fc3d4c 6048
6049 char esignbuf[4];
806e7201 6050 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6051 STRLEN esignlen = 0;
6052
6053 char *eptr = Nullch;
fc36a67e 6054 STRLEN elen = 0;
089c015b
JH		 6055 /* Times 4: a decimal digit takes more than 3 binary digits.
6056 * NV_DIG: mantissa takes than many decimal digits.
6057 * Plus 32: Playing safe. */
6058 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6059 /* large enough for "%#.#f" --chip */
6060 /* what about long double NVs? --jhi */
b22c7a20
GS		 6061
6062 SV *vecsv;
a05b299f 6063 U8 *vecstr = Null(U8*);
b22c7a20 6064 STRLEN veclen = 0;
46fc3d4c 6065 char c;
6066 int i;
6067 unsigned base;
6068 IV iv;
6069 UV uv;
65202027 6070 NV nv;
46fc3d4c 6071 STRLEN have;
6072 STRLEN need;
6073 STRLEN gap;
b22c7a20
GS		 6074 char *dotstr = ".";
6075 STRLEN dotstrlen = 1;
46fc3d4c 6076
6077 for (q = p; q < patend && *q != '%'; ++q) ;
6078 if (q > p) {
6079 sv_catpvn(sv, p, q - p);
6080 p = q;
6081 }
6082 if (q++ >= patend)
6083 break;
6084
fc36a67e 6085 /* FLAGS */
6086
46fc3d4c 6087 while (*q) {
6088 switch (*q) {
6089 case ' ':
6090 case '+':
6091 plus = *q++;
6092 continue;
6093
6094 case '-':
6095 left = TRUE;
6096 q++;
6097 continue;
6098
6099 case '0':
6100 fill = *q++;
6101 continue;
6102
6103 case '#':
6104 alt = TRUE;
6105 q++;
6106 continue;
6107
b22c7a20
GS		 6108 case '*': /* printf("%*vX",":",$ipv6addr) */
6109 if (q[1] != 'v')
6110 break;
6111 q++;
6112 if (args)
6113 vecsv = va_arg(*args, SV*);
6114 else if (svix < svmax)
6115 vecsv = svargs[svix++];
9c3dd3fe
GS		 6116 else
6117 continue;
b22c7a20
GS		 6118 dotstr = SvPVx(vecsv,dotstrlen);
6119 if (DO_UTF8(vecsv))
6120 is_utf = TRUE;
6121 /* FALL THROUGH */
6122
6123 case 'v':
6124 vectorize = TRUE;
6125 q++;
b22c7a20
GS		 6126 continue;
6127
fc36a67e 6128 default:
6129 break;
6130 }
6131 break;
6132 }
46fc3d4c 6133
fc36a67e 6134 /* WIDTH */
6135
6136 switch (*q) {
6137 case '1': case '2': case '3':
6138 case '4': case '5': case '6':
6139 case '7': case '8': case '9':
6140 width = 0;
6141 while (isDIGIT(*q))
6142 width = width * 10 + (*q++ - '0');
6143 break;
6144
6145 case '*':
6146 if (args)
6147 i = va_arg(*args, int);
6148 else
6149 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6150 left |= (i < 0);
6151 width = (i < 0) ? -i : i;
6152 q++;
6153 break;
6154 }
6155
6156 /* PRECISION */
46fc3d4c 6157
fc36a67e 6158 if (*q == '.') {
6159 q++;
6160 if (*q == '*') {
46fc3d4c 6161 if (args)
6162 i = va_arg(*args, int);
6163 else
6164 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
fc36a67e 6165 precis = (i < 0) ? 0 : i;
46fc3d4c 6166 q++;
fc36a67e 6167 }
6168 else {
6169 precis = 0;
6170 while (isDIGIT(*q))
6171 precis = precis * 10 + (*q++ - '0');
6172 }
6173 has_precis = TRUE;
6174 }
46fc3d4c 6175
bb2899ba
GS		 6176 if (vectorize) {
6177 if (args) {
6178 vecsv = va_arg(*args, SV*);
6179 vecstr = (U8*)SvPVx(vecsv,veclen);
6180 utf = DO_UTF8(vecsv);
6181 }
6182 else if (svix < svmax) {
6183 vecsv = svargs[svix++];
6184 vecstr = (U8*)SvPVx(vecsv,veclen);
6185 utf = DO_UTF8(vecsv);
6186 }
6187 else {
6188 vecstr = (U8*)"";
6189 veclen = 0;
6190 }
6191 }
6192
fc36a67e 6193 /* SIZE */
46fc3d4c 6194
fc36a67e 6195 switch (*q) {
e5c81feb 6196#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6f9bb7fd 6197 case 'L': /* Ld */
e5c81feb
JH		 6198 /* FALL THROUGH */
6199#endif
6200#ifdef HAS_QUAD
6f9bb7fd
GS		 6201 case 'q': /* qd */
6202 intsize = 'q';
6203 q++;
6204 break;
6205#endif
fc36a67e 6206 case 'l':
e5c81feb
JH		 6207#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6208 if (*(q + 1) == 'l') { /* lld, llf */
fc36a67e 6209 intsize = 'q';
6210 q += 2;
46fc3d4c 6211 break;
cf2093f6 6212 }
fc36a67e 6213#endif
6f9bb7fd 6214 /* FALL THROUGH */
fc36a67e 6215 case 'h':
cf2093f6 6216 /* FALL THROUGH */
fc36a67e 6217 case 'V':
6218 intsize = *q++;
46fc3d4c 6219 break;
6220 }
6221
fc36a67e 6222 /* CONVERSION */
6223
46fc3d4c 6224 switch (c = *q++) {
6225
6226 /* STRINGS */
6227
6228 case '%':
6229 eptr = q - 1;
6230 elen = 1;
6231 goto string;
6232
6233 case 'c':
7e2040f0
GS		 6234 if (args)
6235 uv = va_arg(*args, int);
6236 else
6237 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
3969a896 6238 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6239 eptr = (char*)utf8buf;
6240 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6241 is_utf = TRUE;
6242 }
6243 else {
6244 c = (char)uv;
6245 eptr = &c;
6246 elen = 1;
a0ed51b3 6247 }
46fc3d4c 6248 goto string;
6249
46fc3d4c 6250 case 's':
6251 if (args) {
fc36a67e 6252 eptr = va_arg(*args, char*);
c635e13b 6253 if (eptr)
1d7c1841
GS		 6254#ifdef MACOS_TRADITIONAL
6255 /* On MacOS, %#s format is used for Pascal strings */
6256 if (alt)
6257 elen = *eptr++;
6258 else
6259#endif
c635e13b 6260 elen = strlen(eptr);
6261 else {
6262 eptr = nullstr;
6263 elen = sizeof nullstr - 1;
6264 }
46fc3d4c 6265 }
a0ed51b3 6266 else if (svix < svmax) {
7e2040f0
GS		 6267 argsv = svargs[svix++];
6268 eptr = SvPVx(argsv, elen);
6269 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6270 if (has_precis && precis < elen) {
6271 I32 p = precis;
7e2040f0 6272 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6273 precis = p;
6274 }
6275 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6276 width += elen - sv_len_utf8(argsv);
a0ed51b3 6277 }
7e2040f0 6278 is_utf = TRUE;
a0ed51b3
LW		 6279 }
6280 }
46fc3d4c 6281 goto string;
6282
fc36a67e 6283 case '_':
6284 /*
6285 * The "%_" hack might have to be changed someday,
6286 * if ISO or ANSI decide to use '_' for something.
6287 * So we keep it hidden from users' code.
6288 */
6289 if (!args)
6290 goto unknown;
7e2040f0
GS		 6291 argsv = va_arg(*args,SV*);
6292 eptr = SvPVx(argsv, elen);
6293 if (DO_UTF8(argsv))
6294 is_utf = TRUE;
fc36a67e 6295
46fc3d4c 6296 string:
b22c7a20 6297 vectorize = FALSE;
46fc3d4c 6298 if (has_precis && elen > precis)
6299 elen = precis;
6300 break;
6301
6302 /* INTEGERS */
6303
fc36a67e 6304 case 'p':
c2e66d9e
GS		 6305 if (alt)
6306 goto unknown;
fc36a67e 6307 if (args)
56431972 6308 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6309 else
56431972 6310 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
fc36a67e 6311 base = 16;
6312 goto integer;
6313
46fc3d4c 6314 case 'D':
29fe7a80 6315#ifdef IV_IS_QUAD
22f3ae8c 6316 intsize = 'q';
29fe7a80 6317#else
46fc3d4c 6318 intsize = 'l';
29fe7a80 6319#endif
46fc3d4c 6320 /* FALL THROUGH */
6321 case 'd':
6322 case 'i':
b22c7a20
GS		 6323 if (vectorize) {
6324 I32 ulen;
6325 if (!veclen) {
6326 vectorize = FALSE;
6327 break;
6328 }
6329 if (utf)
8e84507e 6330 iv = (IV)utf8_to_uv_chk(vecstr, &ulen, 0);
b22c7a20 6331 else {
a05b299f 6332 iv = *vecstr;
b22c7a20
GS		 6333 ulen = 1;
6334 }
6335 vecstr += ulen;
6336 veclen -= ulen;
6337 }
6338 else if (args) {
46fc3d4c 6339 switch (intsize) {
6340 case 'h': iv = (short)va_arg(*args, int); break;
6341 default: iv = va_arg(*args, int); break;
6342 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6343 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6344#ifdef HAS_QUAD
6345 case 'q': iv = va_arg(*args, Quad_t); break;
6346#endif
46fc3d4c 6347 }
6348 }
6349 else {
6350 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6351 switch (intsize) {
6352 case 'h': iv = (short)iv; break;
be28567c 6353 default: break;
46fc3d4c 6354 case 'l': iv = (long)iv; break;
fc36a67e 6355 case 'V': break;
cf2093f6
JH		 6356#ifdef HAS_QUAD
6357 case 'q': iv = (Quad_t)iv; break;
6358#endif
46fc3d4c 6359 }
6360 }
6361 if (iv >= 0) {
6362 uv = iv;
6363 if (plus)
6364 esignbuf[esignlen++] = plus;
6365 }
6366 else {
6367 uv = -iv;
6368 esignbuf[esignlen++] = '-';
6369 }
6370 base = 10;
6371 goto integer;
6372
fc36a67e 6373 case 'U':
29fe7a80 6374#ifdef IV_IS_QUAD
22f3ae8c 6375 intsize = 'q';
29fe7a80 6376#else
fc36a67e 6377 intsize = 'l';
29fe7a80 6378#endif
fc36a67e 6379 /* FALL THROUGH */
6380 case 'u':
6381 base = 10;
6382 goto uns_integer;
6383
4f19785b
WSI		 6384 case 'b':
6385 base = 2;
6386 goto uns_integer;
6387
46fc3d4c 6388 case 'O':
29fe7a80 6389#ifdef IV_IS_QUAD
22f3ae8c 6390 intsize = 'q';
29fe7a80 6391#else
46fc3d4c 6392 intsize = 'l';
29fe7a80 6393#endif
46fc3d4c 6394 /* FALL THROUGH */
6395 case 'o':
6396 base = 8;
6397 goto uns_integer;
6398
6399 case 'X':
46fc3d4c 6400 case 'x':
6401 base = 16;
46fc3d4c 6402
6403 uns_integer:
b22c7a20
GS		 6404 if (vectorize) {
6405 I32 ulen;
6406 vector:
6407 if (!veclen) {
6408 vectorize = FALSE;
6409 break;
6410 }
6411 if (utf)
8e84507e 6412 uv = utf8_to_uv_chk(vecstr, &ulen, 0);
b22c7a20 6413 else {
a05b299f 6414 uv = *vecstr;
b22c7a20
GS		 6415 ulen = 1;
6416 }
6417 vecstr += ulen;
6418 veclen -= ulen;
6419 }
6420 else if (args) {
46fc3d4c 6421 switch (intsize) {
6422 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6423 default: uv = va_arg(*args, unsigned); break;
6424 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6425 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6426#ifdef HAS_QUAD
6427 case 'q': uv = va_arg(*args, Quad_t); break;
6428#endif
46fc3d4c 6429 }
6430 }
6431 else {
6432 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6433 switch (intsize) {
6434 case 'h': uv = (unsigned short)uv; break;
be28567c 6435 default: break;
46fc3d4c 6436 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6437 case 'V': break;
cf2093f6
JH		 6438#ifdef HAS_QUAD
6439 case 'q': uv = (Quad_t)uv; break;
6440#endif
46fc3d4c 6441 }
6442 }
6443
6444 integer:
46fc3d4c 6445 eptr = ebuf + sizeof ebuf;
fc36a67e 6446 switch (base) {
6447 unsigned dig;
6448 case 16:
c10ed8b9
HS		 6449 if (!uv)
6450 alt = FALSE;
1d7c1841
GS		 6451 p = (char*)((c == 'X')
6452 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6453 do {
6454 dig = uv & 15;
6455 *--eptr = p[dig];
6456 } while (uv >>= 4);
6457 if (alt) {
46fc3d4c 6458 esignbuf[esignlen++] = '0';
fc36a67e 6459 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6460 }
fc36a67e 6461 break;
6462 case 8:
6463 do {
6464 dig = uv & 7;
6465 *--eptr = '0' + dig;
6466 } while (uv >>= 3);
6467 if (alt && *eptr != '0')
6468 *--eptr = '0';
6469 break;
4f19785b
WSI		 6470 case 2:
6471 do {
6472 dig = uv & 1;
6473 *--eptr = '0' + dig;
6474 } while (uv >>= 1);
eda88b6d
JH		 6475 if (alt) {
6476 esignbuf[esignlen++] = '0';
7481bb52 6477 esignbuf[esignlen++] = 'b';
eda88b6d 6478 }
4f19785b 6479 break;
fc36a67e 6480 default: /* it had better be ten or less */
6bc102ca 6481#if defined(PERL_Y2KWARN)
e476b1b5 6482 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6483 STRLEN n;
6484 char *s = SvPV(sv,n);
6485 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6486 && (n == 2 || !isDIGIT(s[n-3])))
6487 {
e476b1b5 6488 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6489 "Possible Y2K bug: %%%c %s",
6490 c, "format string following '19'");
6491 }
6492 }
6493#endif
fc36a67e 6494 do {
6495 dig = uv % base;
6496 *--eptr = '0' + dig;
6497 } while (uv /= base);
6498 break;
46fc3d4c 6499 }
6500 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6501 if (has_precis) {
6502 if (precis > elen)
6503 zeros = precis - elen;
6504 else if (precis == 0 && elen == 1 && *eptr == '0')
6505 elen = 0;
6506 }
46fc3d4c 6507 break;
6508
6509 /* FLOATING POINT */
6510
fc36a67e 6511 case 'F':
6512 c = 'f'; /* maybe %F isn't supported here */
6513 /* FALL THROUGH */
46fc3d4c 6514 case 'e': case 'E':
fc36a67e 6515 case 'f':
46fc3d4c 6516 case 'g': case 'G':
6517
6518 /* This is evil, but floating point is even more evil */
6519
b22c7a20 6520 vectorize = FALSE;
fc36a67e 6521 if (args)
65202027 6522 nv = va_arg(*args, NV);
fc36a67e 6523 else
6524 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6525
6526 need = 0;
6527 if (c != 'e' && c != 'E') {
6528 i = PERL_INT_MIN;
73b309ea 6529 (void)Perl_frexp(nv, &i);
fc36a67e 6530 if (i == PERL_INT_MIN)
cea2e8a9 6531 Perl_die(aTHX_ "panic: frexp");
c635e13b 6532 if (i > 0)
fc36a67e 6533 need = BIT_DIGITS(i);
6534 }
6535 need += has_precis ? precis : 6; /* known default */
6536 if (need < width)
6537 need = width;
6538
46fc3d4c 6539 need += 20; /* fudge factor */
80252599
GS		 6540 if (PL_efloatsize < need) {
6541 Safefree(PL_efloatbuf);
6542 PL_efloatsize = need + 20; /* more fudge */
6543 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6544 PL_efloatbuf[0] = '\0';
46fc3d4c 6545 }
6546
6547 eptr = ebuf + sizeof ebuf;
6548 *--eptr = '\0';
6549 *--eptr = c;
e5c81feb 6550#if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
cf2093f6 6551 {
e5c81feb
JH		 6552 /* Copy the one or more characters in a long double
6553 * format before the 'base' ([efgEFG]) character to
6554 * the format string. */
6555 static char const prifldbl[] = PERL_PRIfldbl;
6556 char const *p = prifldbl + sizeof(prifldbl) - 3;
6557 while (p >= prifldbl) { *--eptr = *p--; }
cf2093f6 6558 }
65202027 6559#endif
46fc3d4c 6560 if (has_precis) {
6561 base = precis;
6562 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6563 *--eptr = '.';
6564 }
6565 if (width) {
6566 base = width;
6567 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6568 }
6569 if (fill == '0')
6570 *--eptr = fill;
84902520
TB		 6571 if (left)
6572 *--eptr = '-';
46fc3d4c 6573 if (plus)
6574 *--eptr = plus;
6575 if (alt)
6576 *--eptr = '#';
6577 *--eptr = '%';
6578
bf24ccfa 6579 {
f93f4e46 6580 STORE_NUMERIC_STANDARD_SET_LOCAL();
e54dc35b 6581#ifdef USE_LOCALE_NUMERIC
f93f4e46
CK		 6582 if (!was_standard && maybe_tainted)
6583 *maybe_tainted = TRUE;
e54dc35b 6584#endif
bf24ccfa 6585 (void)sprintf(PL_efloatbuf, eptr, nv);
f93f4e46 6586 RESTORE_NUMERIC_STANDARD();
bf24ccfa 6587 }
8af02333 6588
80252599
GS		 6589 eptr = PL_efloatbuf;
6590 elen = strlen(PL_efloatbuf);
46fc3d4c 6591 break;
6592
fc36a67e 6593 /* SPECIAL */
6594
6595 case 'n':
b22c7a20 6596 vectorize = FALSE;
fc36a67e 6597 i = SvCUR(sv) - origlen;
6598 if (args) {
c635e13b 6599 switch (intsize) {
6600 case 'h': *(va_arg(*args, short*)) = i; break;
6601 default: *(va_arg(*args, int*)) = i; break;
6602 case 'l': *(va_arg(*args, long*)) = i; break;
6603 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6604#ifdef HAS_QUAD
6605 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6606#endif
c635e13b 6607 }
fc36a67e 6608 }
6609 else if (svix < svmax)
c2e66d9e 6610 sv_setuv_mg(svargs[svix++], (UV)i);
fc36a67e 6611 continue; /* not "break" */
6612
6613 /* UNKNOWN */
6614
46fc3d4c 6615 default:
fc36a67e 6616 unknown:
b22c7a20 6617 vectorize = FALSE;
599cee73 6618 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6619 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6620 SV *msg = sv_newmortal();
cea2e8a9 6621 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6622 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6623 if (c) {
0f4b6630 6624 if (isPRINT(c))
1c846c1f 6625 Perl_sv_catpvf(aTHX_ msg,
0f4b6630
JH		 6626 "\"%%%c\"", c & 0xFF);
6627 else
6628 Perl_sv_catpvf(aTHX_ msg,
57def98f 6629 "\"%%\\%03"UVof"\"",
0f4b6630 6630 (UV)c & 0xFF);
0f4b6630 6631 } else
c635e13b 6632 sv_catpv(msg, "end of string");
894356b3 6633 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6634 }
fb73857a 6635
6636 /* output mangled stuff ... */
6637 if (c == '\0')
6638 --q;
46fc3d4c 6639 eptr = p;
6640 elen = q - p;
fb73857a 6641
6642 /* ... right here, because formatting flags should not apply */
6643 SvGROW(sv, SvCUR(sv) + elen + 1);
6644 p = SvEND(sv);
6645 memcpy(p, eptr, elen);
6646 p += elen;
6647 *p = '\0';
6648 SvCUR(sv) = p - SvPVX(sv);
6649 continue; /* not "break" */
46fc3d4c 6650 }
6651
fc36a67e 6652 have = esignlen + zeros + elen;
46fc3d4c 6653 need = (have > width ? have : width);
6654 gap = need - have;
6655
b22c7a20 6656 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6657 p = SvEND(sv);
6658 if (esignlen && fill == '0') {
6659 for (i = 0; i < esignlen; i++)
6660 *p++ = esignbuf[i];
6661 }
6662 if (gap && !left) {
6663 memset(p, fill, gap);
6664 p += gap;
6665 }
6666 if (esignlen && fill != '0') {
6667 for (i = 0; i < esignlen; i++)
6668 *p++ = esignbuf[i];
6669 }
fc36a67e 6670 if (zeros) {
6671 for (i = zeros; i; i--)
6672 *p++ = '0';
6673 }
46fc3d4c 6674 if (elen) {
6675 memcpy(p, eptr, elen);
6676 p += elen;
6677 }
6678 if (gap && left) {
6679 memset(p, ' ', gap);
6680 p += gap;
6681 }
b22c7a20
GS		 6682 if (vectorize) {
6683 if (veclen) {
6684 memcpy(p, dotstr, dotstrlen);
6685 p += dotstrlen;
6686 }
6687 else
6688 vectorize = FALSE; /* done iterating over vecstr */
6689 }
7e2040f0
GS		 6690 if (is_utf)
6691 SvUTF8_on(sv);
46fc3d4c 6692 *p = '\0';
6693 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6694 if (vectorize) {
6695 esignlen = 0;
6696 goto vector;
6697 }
46fc3d4c 6698 }
6699}
51371543 6700
1d7c1841
GS		 6701#if defined(USE_ITHREADS)
6702
6703#if defined(USE_THREADS)
6704# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6705#endif
6706
1d7c1841
GS		 6707#ifndef GpREFCNT_inc
6708# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6709#endif
6710
6711
6712#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6713#define av_dup(s) (AV*)sv_dup((SV*)s)
6714#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6715#define hv_dup(s) (HV*)sv_dup((SV*)s)
6716#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6717#define cv_dup(s) (CV*)sv_dup((SV*)s)
6718#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6719#define io_dup(s) (IO*)sv_dup((SV*)s)
6720#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6721#define gv_dup(s) (GV*)sv_dup((SV*)s)
6722#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6723#define SAVEPV(p) (p ? savepv(p) : Nullch)
6724#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6725
6726REGEXP *
6727Perl_re_dup(pTHX_ REGEXP *r)
6728{
6729 /* XXX fix when pmop->op_pmregexp becomes shared */
6730 return ReREFCNT_inc(r);
6731}
6732
6733PerlIO *
6734Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6735{
6736 PerlIO *ret;
6737 if (!fp)
6738 return (PerlIO*)NULL;
6739
6740 /* look for it in the table first */
6741 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6742 if (ret)
6743 return ret;
6744
6745 /* create anew and remember what it is */
6746 ret = PerlIO_fdupopen(fp);
6747 ptr_table_store(PL_ptr_table, fp, ret);
6748 return ret;
6749}
6750
6751DIR *
6752Perl_dirp_dup(pTHX_ DIR *dp)
6753{
6754 if (!dp)
6755 return (DIR*)NULL;
6756 /* XXX TODO */
6757 return dp;
6758}
6759
6760GP *
6761Perl_gp_dup(pTHX_ GP *gp)
6762{
6763 GP *ret;
6764 if (!gp)
6765 return (GP*)NULL;
6766 /* look for it in the table first */
6767 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6768 if (ret)
6769 return ret;
6770
6771 /* create anew and remember what it is */
6772 Newz(0, ret, 1, GP);
6773 ptr_table_store(PL_ptr_table, gp, ret);
6774
6775 /* clone */
6776 ret->gp_refcnt = 0; /* must be before any other dups! */
6777 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6778 ret->gp_io = io_dup_inc(gp->gp_io);
6779 ret->gp_form = cv_dup_inc(gp->gp_form);
6780 ret->gp_av = av_dup_inc(gp->gp_av);
6781 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6782 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6783 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6784 ret->gp_cvgen = gp->gp_cvgen;
6785 ret->gp_flags = gp->gp_flags;
6786 ret->gp_line = gp->gp_line;
6787 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6788 return ret;
6789}
6790
6791MAGIC *
6792Perl_mg_dup(pTHX_ MAGIC *mg)
6793{
6794 MAGIC *mgret = (MAGIC*)NULL;
6795 MAGIC *mgprev;
6796 if (!mg)
6797 return (MAGIC*)NULL;
6798 /* look for it in the table first */
6799 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6800 if (mgret)
6801 return mgret;
6802
6803 for (; mg; mg = mg->mg_moremagic) {
6804 MAGIC *nmg;
6805 Newz(0, nmg, 1, MAGIC);
6806 if (!mgret)
6807 mgret = nmg;
6808 else
6809 mgprev->mg_moremagic = nmg;
6810 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6811 nmg->mg_private = mg->mg_private;
6812 nmg->mg_type = mg->mg_type;
6813 nmg->mg_flags = mg->mg_flags;
6814 if (mg->mg_type == 'r') {
6815 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6816 }
6817 else {
6818 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6819 ? sv_dup_inc(mg->mg_obj)
6820 : sv_dup(mg->mg_obj);
6821 }
6822 nmg->mg_len = mg->mg_len;
6823 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6824 if (mg->mg_ptr && mg->mg_type != 'g') {
6825 if (mg->mg_len >= 0) {
6826 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6827 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6828 AMT *amtp = (AMT*)mg->mg_ptr;
6829 AMT *namtp = (AMT*)nmg->mg_ptr;
6830 I32 i;
6831 for (i = 1; i < NofAMmeth; i++) {
6832 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6833 }
6834 }
6835 }
6836 else if (mg->mg_len == HEf_SVKEY)
6837 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6838 }
6839 mgprev = nmg;
6840 }
6841 return mgret;
6842}
6843
6844PTR_TBL_t *
6845Perl_ptr_table_new(pTHX)
6846{
6847 PTR_TBL_t *tbl;
6848 Newz(0, tbl, 1, PTR_TBL_t);
6849 tbl->tbl_max = 511;
6850 tbl->tbl_items = 0;
6851 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6852 return tbl;
6853}
6854
6855void *
6856Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6857{
6858 PTR_TBL_ENT_t *tblent;
d2a79402 6859 UV hash = PTR2UV(sv);
1d7c1841
GS		 6860 assert(tbl);
6861 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6862 for (; tblent; tblent = tblent->next) {
6863 if (tblent->oldval == sv)
6864 return tblent->newval;
6865 }
6866 return (void*)NULL;
6867}
6868
6869void
6870Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6871{
6872 PTR_TBL_ENT_t *tblent, **otblent;
6873 /* XXX this may be pessimal on platforms where pointers aren't good
6874 * hash values e.g. if they grow faster in the most significant
6875 * bits */
d2a79402 6876 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6877 bool i = 1;
6878
6879 assert(tbl);
6880 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6881 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6882 if (tblent->oldval == oldv) {
6883 tblent->newval = newv;
6884 tbl->tbl_items++;
6885 return;
6886 }
6887 }
6888 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6889 tblent->oldval = oldv;
6890 tblent->newval = newv;
6891 tblent->next = *otblent;
6892 *otblent = tblent;
6893 tbl->tbl_items++;
6894 if (i && tbl->tbl_items > tbl->tbl_max)
6895 ptr_table_split(tbl);
6896}
6897
6898void
6899Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6900{
6901 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6902 UV oldsize = tbl->tbl_max + 1;
6903 UV newsize = oldsize * 2;
6904 UV i;
6905
6906 Renew(ary, newsize, PTR_TBL_ENT_t*);
6907 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6908 tbl->tbl_max = --newsize;
6909 tbl->tbl_ary = ary;
6910 for (i=0; i < oldsize; i++, ary++) {
6911 PTR_TBL_ENT_t **curentp, **entp, *ent;
6912 if (!*ary)
6913 continue;
6914 curentp = ary + oldsize;
6915 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6916 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6917 *entp = ent->next;
6918 ent->next = *curentp;
6919 *curentp = ent;
6920 continue;
6921 }
6922 else
6923 entp = &ent->next;
6924 }
6925 }
6926}
6927
6928#ifdef DEBUGGING
6929char *PL_watch_pvx;
6930#endif
6931
6932SV *
6933Perl_sv_dup(pTHX_ SV *sstr)
6934{
1d7c1841
GS		 6935 SV *dstr;
6936
6937 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6938 return Nullsv;
6939 /* look for it in the table first */
6940 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6941 if (dstr)
6942 return dstr;
6943
6944 /* create anew and remember what it is */
6945 new_SV(dstr);
6946 ptr_table_store(PL_ptr_table, sstr, dstr);
6947
6948 /* clone */
6949 SvFLAGS(dstr) = SvFLAGS(sstr);
6950 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6951 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6952
6953#ifdef DEBUGGING
6954 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6955 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6956 PL_watch_pvx, SvPVX(sstr));
6957#endif
6958
6959 switch (SvTYPE(sstr)) {
6960 case SVt_NULL:
6961 SvANY(dstr) = NULL;
6962 break;
6963 case SVt_IV:
6964 SvANY(dstr) = new_XIV();
6965 SvIVX(dstr) = SvIVX(sstr);
6966 break;
6967 case SVt_NV:
6968 SvANY(dstr) = new_XNV();
6969 SvNVX(dstr) = SvNVX(sstr);
6970 break;
6971 case SVt_RV:
6972 SvANY(dstr) = new_XRV();
6973 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6974 break;
6975 case SVt_PV:
6976 SvANY(dstr) = new_XPV();
6977 SvCUR(dstr) = SvCUR(sstr);
6978 SvLEN(dstr) = SvLEN(sstr);
6979 if (SvROK(sstr))
6980 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6981 else if (SvPVX(sstr) && SvLEN(sstr))
6982 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6983 else
6984 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6985 break;
6986 case SVt_PVIV:
6987 SvANY(dstr) = new_XPVIV();
6988 SvCUR(dstr) = SvCUR(sstr);
6989 SvLEN(dstr) = SvLEN(sstr);
6990 SvIVX(dstr) = SvIVX(sstr);
6991 if (SvROK(sstr))
6992 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6993 else if (SvPVX(sstr) && SvLEN(sstr))
6994 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6995 else
6996 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6997 break;
6998 case SVt_PVNV:
6999 SvANY(dstr) = new_XPVNV();
7000 SvCUR(dstr) = SvCUR(sstr);
7001 SvLEN(dstr) = SvLEN(sstr);
7002 SvIVX(dstr) = SvIVX(sstr);
7003 SvNVX(dstr) = SvNVX(sstr);
7004 if (SvROK(sstr))
7005 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7006 else if (SvPVX(sstr) && SvLEN(sstr))
7007 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7008 else
7009 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7010 break;
7011 case SVt_PVMG:
7012 SvANY(dstr) = new_XPVMG();
7013 SvCUR(dstr) = SvCUR(sstr);
7014 SvLEN(dstr) = SvLEN(sstr);
7015 SvIVX(dstr) = SvIVX(sstr);
7016 SvNVX(dstr) = SvNVX(sstr);
7017 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7018 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7019 if (SvROK(sstr))
7020 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7021 else if (SvPVX(sstr) && SvLEN(sstr))
7022 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7023 else
7024 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7025 break;
7026 case SVt_PVBM:
7027 SvANY(dstr) = new_XPVBM();
7028 SvCUR(dstr) = SvCUR(sstr);
7029 SvLEN(dstr) = SvLEN(sstr);
7030 SvIVX(dstr) = SvIVX(sstr);
7031 SvNVX(dstr) = SvNVX(sstr);
7032 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7033 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7034 if (SvROK(sstr))
7035 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7036 else if (SvPVX(sstr) && SvLEN(sstr))
7037 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7038 else
7039 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7040 BmRARE(dstr) = BmRARE(sstr);
7041 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7042 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7043 break;
7044 case SVt_PVLV:
7045 SvANY(dstr) = new_XPVLV();
7046 SvCUR(dstr) = SvCUR(sstr);
7047 SvLEN(dstr) = SvLEN(sstr);
7048 SvIVX(dstr) = SvIVX(sstr);
7049 SvNVX(dstr) = SvNVX(sstr);
7050 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7051 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7052 if (SvROK(sstr))
7053 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7054 else if (SvPVX(sstr) && SvLEN(sstr))
7055 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7056 else
7057 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7058 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7059 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7060 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7061 LvTYPE(dstr) = LvTYPE(sstr);
7062 break;
7063 case SVt_PVGV:
7064 SvANY(dstr) = new_XPVGV();
7065 SvCUR(dstr) = SvCUR(sstr);
7066 SvLEN(dstr) = SvLEN(sstr);
7067 SvIVX(dstr) = SvIVX(sstr);
7068 SvNVX(dstr) = SvNVX(sstr);
7069 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7070 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7071 if (SvROK(sstr))
7072 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7073 else if (SvPVX(sstr) && SvLEN(sstr))
7074 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7075 else
7076 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7077 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7078 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7079 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7080 GvFLAGS(dstr) = GvFLAGS(sstr);
7081 GvGP(dstr) = gp_dup(GvGP(sstr));
7082 (void)GpREFCNT_inc(GvGP(dstr));
7083 break;
7084 case SVt_PVIO:
7085 SvANY(dstr) = new_XPVIO();
7086 SvCUR(dstr) = SvCUR(sstr);
7087 SvLEN(dstr) = SvLEN(sstr);
7088 SvIVX(dstr) = SvIVX(sstr);
7089 SvNVX(dstr) = SvNVX(sstr);
7090 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7091 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7092 if (SvROK(sstr))
7093 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7094 else if (SvPVX(sstr) && SvLEN(sstr))
7095 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7096 else
7097 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7098 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7099 if (IoOFP(sstr) == IoIFP(sstr))
7100 IoOFP(dstr) = IoIFP(dstr);
7101 else
7102 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7103 /* PL_rsfp_filters entries have fake IoDIRP() */
7104 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7105 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7106 else
7107 IoDIRP(dstr) = IoDIRP(sstr);
7108 IoLINES(dstr) = IoLINES(sstr);
7109 IoPAGE(dstr) = IoPAGE(sstr);
7110 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7111 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7112 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7113 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7114 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7115 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7116 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7117 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7118 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7119 IoTYPE(dstr) = IoTYPE(sstr);
7120 IoFLAGS(dstr) = IoFLAGS(sstr);
7121 break;
7122 case SVt_PVAV:
7123 SvANY(dstr) = new_XPVAV();
7124 SvCUR(dstr) = SvCUR(sstr);
7125 SvLEN(dstr) = SvLEN(sstr);
7126 SvIVX(dstr) = SvIVX(sstr);
7127 SvNVX(dstr) = SvNVX(sstr);
7128 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7129 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7130 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7131 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7132 if (AvARRAY((AV*)sstr)) {
7133 SV **dst_ary, **src_ary;
7134 SSize_t items = AvFILLp((AV*)sstr) + 1;
7135
7136 src_ary = AvARRAY((AV*)sstr);
7137 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7138 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7139 SvPVX(dstr) = (char*)dst_ary;
7140 AvALLOC((AV*)dstr) = dst_ary;
7141 if (AvREAL((AV*)sstr)) {
7142 while (items-- > 0)
7143 *dst_ary++ = sv_dup_inc(*src_ary++);
7144 }
7145 else {
7146 while (items-- > 0)
7147 *dst_ary++ = sv_dup(*src_ary++);
7148 }
7149 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7150 while (items-- > 0) {
7151 *dst_ary++ = &PL_sv_undef;
7152 }
7153 }
7154 else {
7155 SvPVX(dstr) = Nullch;
7156 AvALLOC((AV*)dstr) = (SV**)NULL;
7157 }
7158 break;
7159 case SVt_PVHV:
7160 SvANY(dstr) = new_XPVHV();
7161 SvCUR(dstr) = SvCUR(sstr);
7162 SvLEN(dstr) = SvLEN(sstr);
7163 SvIVX(dstr) = SvIVX(sstr);
7164 SvNVX(dstr) = SvNVX(sstr);
7165 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7166 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7167 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7168 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7169 STRLEN i = 0;
7170 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7171 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7172 Newz(0, dxhv->xhv_array,
7173 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7174 while (i <= sxhv->xhv_max) {
7175 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7176 !!HvSHAREKEYS(sstr));
7177 ++i;
7178 }
7179 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7180 }
7181 else {
7182 SvPVX(dstr) = Nullch;
7183 HvEITER((HV*)dstr) = (HE*)NULL;
7184 }
7185 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7186 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7187 break;
7188 case SVt_PVFM:
7189 SvANY(dstr) = new_XPVFM();
7190 FmLINES(dstr) = FmLINES(sstr);
7191 goto dup_pvcv;
7192 /* NOTREACHED */
7193 case SVt_PVCV:
7194 SvANY(dstr) = new_XPVCV();
7195dup_pvcv:
7196 SvCUR(dstr) = SvCUR(sstr);
7197 SvLEN(dstr) = SvLEN(sstr);
7198 SvIVX(dstr) = SvIVX(sstr);
7199 SvNVX(dstr) = SvNVX(sstr);
7200 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7201 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7202 if (SvPVX(sstr) && SvLEN(sstr))
7203 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7204 else
7205 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7206 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7207 CvSTART(dstr) = CvSTART(sstr);
7208 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7209 CvXSUB(dstr) = CvXSUB(sstr);
7210 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7211 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7212 CvDEPTH(dstr) = CvDEPTH(sstr);
7213 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7214 /* XXX padlists are real, but pretend to be not */
7215 AvREAL_on(CvPADLIST(sstr));
7216 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7217 AvREAL_off(CvPADLIST(sstr));
7218 AvREAL_off(CvPADLIST(dstr));
7219 }
7220 else
7221 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7222 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7223 CvFLAGS(dstr) = CvFLAGS(sstr);
7224 break;
7225 default:
7226 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7227 break;
7228 }
7229
7230 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7231 ++PL_sv_objcount;
7232
7233 return dstr;
7234}
7235
7236PERL_CONTEXT *
7237Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7238{
7239 PERL_CONTEXT *ncxs;
7240
7241 if (!cxs)
7242 return (PERL_CONTEXT*)NULL;
7243
7244 /* look for it in the table first */
7245 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7246 if (ncxs)
7247 return ncxs;
7248
7249 /* create anew and remember what it is */
7250 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7251 ptr_table_store(PL_ptr_table, cxs, ncxs);
7252
7253 while (ix >= 0) {
7254 PERL_CONTEXT *cx = &cxs[ix];
7255 PERL_CONTEXT *ncx = &ncxs[ix];
7256 ncx->cx_type = cx->cx_type;
7257 if (CxTYPE(cx) == CXt_SUBST) {
7258 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7259 }
7260 else {
7261 ncx->blk_oldsp = cx->blk_oldsp;
7262 ncx->blk_oldcop = cx->blk_oldcop;
7263 ncx->blk_oldretsp = cx->blk_oldretsp;
7264 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7265 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7266 ncx->blk_oldpm = cx->blk_oldpm;
7267 ncx->blk_gimme = cx->blk_gimme;
7268 switch (CxTYPE(cx)) {
7269 case CXt_SUB:
7270 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7271 ? cv_dup_inc(cx->blk_sub.cv)
7272 : cv_dup(cx->blk_sub.cv));
7273 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7274 ? av_dup_inc(cx->blk_sub.argarray)
7275 : Nullav);
7276 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7277 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7278 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7279 ncx->blk_sub.lval = cx->blk_sub.lval;
7280 break;
7281 case CXt_EVAL:
7282 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7283 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7284 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7285 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7286 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7287 break;
7288 case CXt_LOOP:
7289 ncx->blk_loop.label = cx->blk_loop.label;
7290 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7291 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7292 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7293 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7294 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7295 ? cx->blk_loop.iterdata
7296 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7297 ncx->blk_loop.oldcurpad
7298 = (SV**)ptr_table_fetch(PL_ptr_table,
7299 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7300 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7301 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7302 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7303 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7304 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7305 break;
7306 case CXt_FORMAT:
7307 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7308 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7309 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7310 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7311 break;
7312 case CXt_BLOCK:
7313 case CXt_NULL:
7314 break;
7315 }
7316 }
7317 --ix;
7318 }
7319 return ncxs;
7320}
7321
7322PERL_SI *
7323Perl_si_dup(pTHX_ PERL_SI *si)
7324{
7325 PERL_SI *nsi;
7326
7327 if (!si)
7328 return (PERL_SI*)NULL;
7329
7330 /* look for it in the table first */
7331 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7332 if (nsi)
7333 return nsi;
7334
7335 /* create anew and remember what it is */
7336 Newz(56, nsi, 1, PERL_SI);
7337 ptr_table_store(PL_ptr_table, si, nsi);
7338
7339 nsi->si_stack = av_dup_inc(si->si_stack);
7340 nsi->si_cxix = si->si_cxix;
7341 nsi->si_cxmax = si->si_cxmax;
7342 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7343 nsi->si_type = si->si_type;
7344 nsi->si_prev = si_dup(si->si_prev);
7345 nsi->si_next = si_dup(si->si_next);
7346 nsi->si_markoff = si->si_markoff;
7347
7348 return nsi;
7349}
7350
7351#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7352#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7353#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7354#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7355#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7356#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7357#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7358#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7359#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7360#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7361#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7362#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7363
7364/* XXXXX todo */
7365#define pv_dup_inc(p) SAVEPV(p)
7366#define pv_dup(p) SAVEPV(p)
7367#define svp_dup_inc(p,pp) any_dup(p,pp)
7368
7369void *
7370Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7371{
7372 void *ret;
7373
7374 if (!v)
7375 return (void*)NULL;
7376
7377 /* look for it in the table first */
7378 ret = ptr_table_fetch(PL_ptr_table, v);
7379 if (ret)
7380 return ret;
7381
7382 /* see if it is part of the interpreter structure */
7383 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7384 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7385 else
7386 ret = v;
7387
7388 return ret;
7389}
7390
7391ANY *
7392Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7393{
7394 ANY *ss = proto_perl->Tsavestack;
7395 I32 ix = proto_perl->Tsavestack_ix;
7396 I32 max = proto_perl->Tsavestack_max;
7397 ANY *nss;
7398 SV *sv;
7399 GV *gv;
7400 AV *av;
7401 HV *hv;
7402 void* ptr;
7403 int intval;
7404 long longval;
7405 GP *gp;
7406 IV iv;
7407 I32 i;
7408 char *c;
7409 void (*dptr) (void*);
7410 void (*dxptr) (pTHXo_ void*);
e977893f 7411 OP *o;
1d7c1841
GS		 7412
7413 Newz(54, nss, max, ANY);
7414
7415 while (ix > 0) {
7416 i = POPINT(ss,ix);
7417 TOPINT(nss,ix) = i;
7418 switch (i) {
7419 case SAVEt_ITEM: /* normal string */
7420 sv = (SV*)POPPTR(ss,ix);
7421 TOPPTR(nss,ix) = sv_dup_inc(sv);
7422 sv = (SV*)POPPTR(ss,ix);
7423 TOPPTR(nss,ix) = sv_dup_inc(sv);
7424 break;
7425 case SAVEt_SV: /* scalar reference */
7426 sv = (SV*)POPPTR(ss,ix);
7427 TOPPTR(nss,ix) = sv_dup_inc(sv);
7428 gv = (GV*)POPPTR(ss,ix);
7429 TOPPTR(nss,ix) = gv_dup_inc(gv);
7430 break;
f4dd75d9
GS		 7431 case SAVEt_GENERIC_PVREF: /* generic char* */
7432 c = (char*)POPPTR(ss,ix);
7433 TOPPTR(nss,ix) = pv_dup(c);
7434 ptr = POPPTR(ss,ix);
7435 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7436 break;
1d7c1841
GS		 7437 case SAVEt_GENERIC_SVREF: /* generic sv */
7438 case SAVEt_SVREF: /* scalar reference */
7439 sv = (SV*)POPPTR(ss,ix);
7440 TOPPTR(nss,ix) = sv_dup_inc(sv);
7441 ptr = POPPTR(ss,ix);
7442 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7443 break;
7444 case SAVEt_AV: /* array reference */
7445 av = (AV*)POPPTR(ss,ix);
7446 TOPPTR(nss,ix) = av_dup_inc(av);
7447 gv = (GV*)POPPTR(ss,ix);
7448 TOPPTR(nss,ix) = gv_dup(gv);
7449 break;
7450 case SAVEt_HV: /* hash reference */
7451 hv = (HV*)POPPTR(ss,ix);
7452 TOPPTR(nss,ix) = hv_dup_inc(hv);
7453 gv = (GV*)POPPTR(ss,ix);
7454 TOPPTR(nss,ix) = gv_dup(gv);
7455 break;
7456 case SAVEt_INT: /* int reference */
7457 ptr = POPPTR(ss,ix);
7458 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7459 intval = (int)POPINT(ss,ix);
7460 TOPINT(nss,ix) = intval;
7461 break;
7462 case SAVEt_LONG: /* long reference */
7463 ptr = POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7465 longval = (long)POPLONG(ss,ix);
7466 TOPLONG(nss,ix) = longval;
7467 break;
7468 case SAVEt_I32: /* I32 reference */
7469 case SAVEt_I16: /* I16 reference */
7470 case SAVEt_I8: /* I8 reference */
7471 ptr = POPPTR(ss,ix);
7472 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7473 i = POPINT(ss,ix);
7474 TOPINT(nss,ix) = i;
7475 break;
7476 case SAVEt_IV: /* IV reference */
7477 ptr = POPPTR(ss,ix);
7478 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7479 iv = POPIV(ss,ix);
7480 TOPIV(nss,ix) = iv;
7481 break;
7482 case SAVEt_SPTR: /* SV* reference */
7483 ptr = POPPTR(ss,ix);
7484 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7485 sv = (SV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = sv_dup(sv);
7487 break;
7488 case SAVEt_VPTR: /* random* reference */
7489 ptr = POPPTR(ss,ix);
7490 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7491 ptr = POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7493 break;
7494 case SAVEt_PPTR: /* char* reference */
7495 ptr = POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7497 c = (char*)POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = pv_dup(c);
7499 break;
7500 case SAVEt_HPTR: /* HV* reference */
7501 ptr = POPPTR(ss,ix);
7502 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7503 hv = (HV*)POPPTR(ss,ix);
7504 TOPPTR(nss,ix) = hv_dup(hv);
7505 break;
7506 case SAVEt_APTR: /* AV* reference */
7507 ptr = POPPTR(ss,ix);
7508 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7509 av = (AV*)POPPTR(ss,ix);
7510 TOPPTR(nss,ix) = av_dup(av);
7511 break;
7512 case SAVEt_NSTAB:
7513 gv = (GV*)POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = gv_dup(gv);
7515 break;
7516 case SAVEt_GP: /* scalar reference */
7517 gp = (GP*)POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = gp = gp_dup(gp);
7519 (void)GpREFCNT_inc(gp);
7520 gv = (GV*)POPPTR(ss,ix);
7521 TOPPTR(nss,ix) = gv_dup_inc(c);
7522 c = (char*)POPPTR(ss,ix);
7523 TOPPTR(nss,ix) = pv_dup(c);
7524 iv = POPIV(ss,ix);
7525 TOPIV(nss,ix) = iv;
7526 iv = POPIV(ss,ix);
7527 TOPIV(nss,ix) = iv;
7528 break;
7529 case SAVEt_FREESV:
7530 sv = (SV*)POPPTR(ss,ix);
7531 TOPPTR(nss,ix) = sv_dup_inc(sv);
7532 break;
7533 case SAVEt_FREEOP:
7534 ptr = POPPTR(ss,ix);
7535 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7536 /* these are assumed to be refcounted properly */
7537 switch (((OP*)ptr)->op_type) {
7538 case OP_LEAVESUB:
7539 case OP_LEAVESUBLV:
7540 case OP_LEAVEEVAL:
7541 case OP_LEAVE:
7542 case OP_SCOPE:
7543 case OP_LEAVEWRITE:
e977893f
GS		 7544 TOPPTR(nss,ix) = ptr;
7545 o = (OP*)ptr;
7546 OpREFCNT_inc(o);
1d7c1841
GS		 7547 break;
7548 default:
7549 TOPPTR(nss,ix) = Nullop;
7550 break;
7551 }
7552 }
7553 else
7554 TOPPTR(nss,ix) = Nullop;
7555 break;
7556 case SAVEt_FREEPV:
7557 c = (char*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = pv_dup_inc(c);
7559 break;
7560 case SAVEt_CLEARSV:
7561 longval = POPLONG(ss,ix);
7562 TOPLONG(nss,ix) = longval;
7563 break;
7564 case SAVEt_DELETE:
7565 hv = (HV*)POPPTR(ss,ix);
7566 TOPPTR(nss,ix) = hv_dup_inc(hv);
7567 c = (char*)POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = pv_dup_inc(c);
7569 i = POPINT(ss,ix);
7570 TOPINT(nss,ix) = i;
7571 break;
7572 case SAVEt_DESTRUCTOR:
7573 ptr = POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7575 dptr = POPDPTR(ss,ix);
ef75a179 7576 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7577 break;
7578 case SAVEt_DESTRUCTOR_X:
7579 ptr = POPPTR(ss,ix);
7580 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7581 dxptr = POPDXPTR(ss,ix);
ef75a179 7582 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7583 break;
7584 case SAVEt_REGCONTEXT:
7585 case SAVEt_ALLOC:
7586 i = POPINT(ss,ix);
7587 TOPINT(nss,ix) = i;
7588 ix -= i;
7589 break;
7590 case SAVEt_STACK_POS: /* Position on Perl stack */
7591 i = POPINT(ss,ix);
7592 TOPINT(nss,ix) = i;
7593 break;
7594 case SAVEt_AELEM: /* array element */
7595 sv = (SV*)POPPTR(ss,ix);
7596 TOPPTR(nss,ix) = sv_dup_inc(sv);
7597 i = POPINT(ss,ix);
7598 TOPINT(nss,ix) = i;
7599 av = (AV*)POPPTR(ss,ix);
7600 TOPPTR(nss,ix) = av_dup_inc(av);
7601 break;
7602 case SAVEt_HELEM: /* hash element */
7603 sv = (SV*)POPPTR(ss,ix);
7604 TOPPTR(nss,ix) = sv_dup_inc(sv);
7605 sv = (SV*)POPPTR(ss,ix);
7606 TOPPTR(nss,ix) = sv_dup_inc(sv);
7607 hv = (HV*)POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = hv_dup_inc(hv);
7609 break;
7610 case SAVEt_OP:
7611 ptr = POPPTR(ss,ix);
7612 TOPPTR(nss,ix) = ptr;
7613 break;
7614 case SAVEt_HINTS:
7615 i = POPINT(ss,ix);
7616 TOPINT(nss,ix) = i;
7617 break;
c4410b1b
GS		 7618 case SAVEt_COMPPAD:
7619 av = (AV*)POPPTR(ss,ix);
7620 TOPPTR(nss,ix) = av_dup(av);
7621 break;
1d7c1841
GS		 7622 default:
7623 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7624 }
7625 }
7626
7627 return nss;
7628}
7629
7630#ifdef PERL_OBJECT
7631#include "XSUB.h"
7632#endif
7633
7634PerlInterpreter *
7635perl_clone(PerlInterpreter *proto_perl, UV flags)
7636{
7637#ifdef PERL_OBJECT
7638 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7639#endif
7640
7641#ifdef PERL_IMPLICIT_SYS
7642 return perl_clone_using(proto_perl, flags,
7643 proto_perl->IMem,
7644 proto_perl->IMemShared,
7645 proto_perl->IMemParse,
7646 proto_perl->IEnv,
7647 proto_perl->IStdIO,
7648 proto_perl->ILIO,
7649 proto_perl->IDir,
7650 proto_perl->ISock,
7651 proto_perl->IProc);
7652}
7653
7654PerlInterpreter *
7655perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7656 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7657 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7658 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7659 struct IPerlDir* ipD, struct IPerlSock* ipS,
7660 struct IPerlProc* ipP)
7661{
7662 /* XXX many of the string copies here can be optimized if they're
7663 * constants; they need to be allocated as common memory and just
7664 * their pointers copied. */
7665
7666 IV i;
1d7c1841
GS		 7667# ifdef PERL_OBJECT
7668 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7669 ipD, ipS, ipP);
ba869deb 7670 PERL_SET_THX(pPerl);
1d7c1841
GS		 7671# else /* !PERL_OBJECT */
7672 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7673 PERL_SET_THX(my_perl);
1d7c1841
GS		 7674
7675# ifdef DEBUGGING
7676 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7677 PL_markstack = 0;
7678 PL_scopestack = 0;
7679 PL_savestack = 0;
7680 PL_retstack = 0;
7681# else /* !DEBUGGING */
7682 Zero(my_perl, 1, PerlInterpreter);
7683# endif /* DEBUGGING */
7684
7685 /* host pointers */
7686 PL_Mem = ipM;
7687 PL_MemShared = ipMS;
7688 PL_MemParse = ipMP;
7689 PL_Env = ipE;
7690 PL_StdIO = ipStd;
7691 PL_LIO = ipLIO;
7692 PL_Dir = ipD;
7693 PL_Sock = ipS;
7694 PL_Proc = ipP;
7695# endif /* PERL_OBJECT */
7696#else /* !PERL_IMPLICIT_SYS */
7697 IV i;
1d7c1841 7698 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7699 PERL_SET_THX(my_perl);
1d7c1841
GS		 7700
7701# ifdef DEBUGGING
7702 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7703 PL_markstack = 0;
7704 PL_scopestack = 0;
7705 PL_savestack = 0;
7706 PL_retstack = 0;
7707# else /* !DEBUGGING */
7708 Zero(my_perl, 1, PerlInterpreter);
7709# endif /* DEBUGGING */
7710#endif /* PERL_IMPLICIT_SYS */
7711
7712 /* arena roots */
7713 PL_xiv_arenaroot = NULL;
7714 PL_xiv_root = NULL;
612f20c3 7715 PL_xnv_arenaroot = NULL;
1d7c1841 7716 PL_xnv_root = NULL;
612f20c3 7717 PL_xrv_arenaroot = NULL;
1d7c1841 7718 PL_xrv_root = NULL;
612f20c3 7719 PL_xpv_arenaroot = NULL;
1d7c1841 7720 PL_xpv_root = NULL;
612f20c3 7721 PL_xpviv_arenaroot = NULL;
1d7c1841 7722 PL_xpviv_root = NULL;
612f20c3 7723 PL_xpvnv_arenaroot = NULL;
1d7c1841 7724 PL_xpvnv_root = NULL;
612f20c3 7725 PL_xpvcv_arenaroot = NULL;
1d7c1841 7726 PL_xpvcv_root = NULL;
612f20c3 7727 PL_xpvav_arenaroot = NULL;
1d7c1841 7728 PL_xpvav_root = NULL;
612f20c3 7729 PL_xpvhv_arenaroot = NULL;
1d7c1841 7730 PL_xpvhv_root = NULL;
612f20c3 7731 PL_xpvmg_arenaroot = NULL;
1d7c1841 7732 PL_xpvmg_root = NULL;
612f20c3 7733 PL_xpvlv_arenaroot = NULL;
1d7c1841 7734 PL_xpvlv_root = NULL;
612f20c3 7735 PL_xpvbm_arenaroot = NULL;
1d7c1841 7736 PL_xpvbm_root = NULL;
612f20c3 7737 PL_he_arenaroot = NULL;
1d7c1841
GS		 7738 PL_he_root = NULL;
7739 PL_nice_chunk = NULL;
7740 PL_nice_chunk_size = 0;
7741 PL_sv_count = 0;
7742 PL_sv_objcount = 0;
7743 PL_sv_root = Nullsv;
7744 PL_sv_arenaroot = Nullsv;
7745
7746 PL_debug = proto_perl->Idebug;
7747
7748 /* create SV map for pointer relocation */
7749 PL_ptr_table = ptr_table_new();
7750
7751 /* initialize these special pointers as early as possible */
7752 SvANY(&PL_sv_undef) = NULL;
7753 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7754 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7755 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7756
7757#ifdef PERL_OBJECT
7758 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7759#else
7760 SvANY(&PL_sv_no) = new_XPVNV();
7761#endif
7762 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7763 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7764 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7765 SvCUR(&PL_sv_no) = 0;
7766 SvLEN(&PL_sv_no) = 1;
7767 SvNVX(&PL_sv_no) = 0;
7768 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7769
7770#ifdef PERL_OBJECT
7771 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7772#else
7773 SvANY(&PL_sv_yes) = new_XPVNV();
7774#endif
7775 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7776 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7777 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7778 SvCUR(&PL_sv_yes) = 1;
7779 SvLEN(&PL_sv_yes) = 2;
7780 SvNVX(&PL_sv_yes) = 1;
7781 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7782
7783 /* create shared string table */
7784 PL_strtab = newHV();
7785 HvSHAREKEYS_off(PL_strtab);
7786 hv_ksplit(PL_strtab, 512);
7787 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7788
7789 PL_compiling = proto_perl->Icompiling;
7790 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7791 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7792 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7793 if (!specialWARN(PL_compiling.cop_warnings))
7794 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7795 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7796
7797 /* pseudo environmental stuff */
7798 PL_origargc = proto_perl->Iorigargc;
7799 i = PL_origargc;
7800 New(0, PL_origargv, i+1, char*);
7801 PL_origargv[i] = '\0';
7802 while (i-- > 0) {
7803 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7804 }
7805 PL_envgv = gv_dup(proto_perl->Ienvgv);
7806 PL_incgv = gv_dup(proto_perl->Iincgv);
7807 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7808 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7809 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7810 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7811
7812 /* switches */
7813 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7814 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7815 PL_localpatches = proto_perl->Ilocalpatches;
7816 PL_splitstr = proto_perl->Isplitstr;
7817 PL_preprocess = proto_perl->Ipreprocess;
7818 PL_minus_n = proto_perl->Iminus_n;
7819 PL_minus_p = proto_perl->Iminus_p;
7820 PL_minus_l = proto_perl->Iminus_l;
7821 PL_minus_a = proto_perl->Iminus_a;
7822 PL_minus_F = proto_perl->Iminus_F;
7823 PL_doswitches = proto_perl->Idoswitches;
7824 PL_dowarn = proto_perl->Idowarn;
7825 PL_doextract = proto_perl->Idoextract;
7826 PL_sawampersand = proto_perl->Isawampersand;
7827 PL_unsafe = proto_perl->Iunsafe;
7828 PL_inplace = SAVEPV(proto_perl->Iinplace);
7829 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7830 PL_perldb = proto_perl->Iperldb;
7831 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7832
7833 /* magical thingies */
7834 /* XXX time(&PL_basetime) when asked for? */
7835 PL_basetime = proto_perl->Ibasetime;
7836 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7837
7838 PL_maxsysfd = proto_perl->Imaxsysfd;
7839 PL_multiline = proto_perl->Imultiline;
7840 PL_statusvalue = proto_perl->Istatusvalue;
7841#ifdef VMS
7842 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7843#endif
7844
7845 /* shortcuts to various I/O objects */
7846 PL_stdingv = gv_dup(proto_perl->Istdingv);
7847 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7848 PL_defgv = gv_dup(proto_perl->Idefgv);
7849 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7850 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7851 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7852
7853 /* shortcuts to regexp stuff */
7854 PL_replgv = gv_dup(proto_perl->Ireplgv);
7855
7856 /* shortcuts to misc objects */
7857 PL_errgv = gv_dup(proto_perl->Ierrgv);
7858
7859 /* shortcuts to debugging objects */
7860 PL_DBgv = gv_dup(proto_perl->IDBgv);
7861 PL_DBline = gv_dup(proto_perl->IDBline);
7862 PL_DBsub = gv_dup(proto_perl->IDBsub);
7863 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7864 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7865 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7866 PL_lineary = av_dup(proto_perl->Ilineary);
7867 PL_dbargs = av_dup(proto_perl->Idbargs);
7868
7869 /* symbol tables */
7870 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7871 PL_curstash = hv_dup(proto_perl->Tcurstash);
7872 PL_debstash = hv_dup(proto_perl->Idebstash);
7873 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7874 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7875
7876 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7877 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7878 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7879 PL_initav = av_dup_inc(proto_perl->Iinitav);
7880
7881 PL_sub_generation = proto_perl->Isub_generation;
7882
7883 /* funky return mechanisms */
7884 PL_forkprocess = proto_perl->Iforkprocess;
7885
7886 /* subprocess state */
7887 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7888
7889 /* internal state */
7890 PL_tainting = proto_perl->Itainting;
7891 PL_maxo = proto_perl->Imaxo;
7892 if (proto_perl->Iop_mask)
7893 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7894 else
7895 PL_op_mask = Nullch;
7896
7897 /* current interpreter roots */
7898 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7899 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7900 PL_main_start = proto_perl->Imain_start;
e977893f 7901 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7902 PL_eval_start = proto_perl->Ieval_start;
7903
7904 /* runtime control stuff */
7905 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7906 PL_copline = proto_perl->Icopline;
7907
7908 PL_filemode = proto_perl->Ifilemode;
7909 PL_lastfd = proto_perl->Ilastfd;
7910 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7911 PL_Argv = NULL;
7912 PL_Cmd = Nullch;
7913 PL_gensym = proto_perl->Igensym;
7914 PL_preambled = proto_perl->Ipreambled;
7915 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7916 PL_laststatval = proto_perl->Ilaststatval;
7917 PL_laststype = proto_perl->Ilaststype;
7918 PL_mess_sv = Nullsv;
7919
7920 PL_orslen = proto_perl->Iorslen;
7921 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7922 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7923
7924 /* interpreter atexit processing */
7925 PL_exitlistlen = proto_perl->Iexitlistlen;
7926 if (PL_exitlistlen) {
7927 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7928 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7929 }
7930 else
7931 PL_exitlist = (PerlExitListEntry*)NULL;
7932 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7933
7934 PL_profiledata = NULL;
7935 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7936 /* PL_rsfp_filters entries have fake IoDIRP() */
7937 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7938
7939 PL_compcv = cv_dup(proto_perl->Icompcv);
7940 PL_comppad = av_dup(proto_perl->Icomppad);
7941 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7942 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7943 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7944 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7945 proto_perl->Tcurpad);
7946
7947#ifdef HAVE_INTERP_INTERN
7948 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7949#endif
7950
7951 /* more statics moved here */
7952 PL_generation = proto_perl->Igeneration;
7953 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 7954
7955 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7956 PL_in_clean_all = proto_perl->Iin_clean_all;
7957
7958 PL_uid = proto_perl->Iuid;
7959 PL_euid = proto_perl->Ieuid;
7960 PL_gid = proto_perl->Igid;
7961 PL_egid = proto_perl->Iegid;
7962 PL_nomemok = proto_perl->Inomemok;
7963 PL_an = proto_perl->Ian;
7964 PL_cop_seqmax = proto_perl->Icop_seqmax;
7965 PL_op_seqmax = proto_perl->Iop_seqmax;
7966 PL_evalseq = proto_perl->Ievalseq;
7967 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7968 PL_origalen = proto_perl->Iorigalen;
7969 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7970 PL_osname = SAVEPV(proto_perl->Iosname);
7971 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7972 PL_sighandlerp = proto_perl->Isighandlerp;
7973
7974
7975 PL_runops = proto_perl->Irunops;
7976
7977 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7978
7979#ifdef CSH
7980 PL_cshlen = proto_perl->Icshlen;
7981 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7982#endif
7983
7984 PL_lex_state = proto_perl->Ilex_state;
7985 PL_lex_defer = proto_perl->Ilex_defer;
7986 PL_lex_expect = proto_perl->Ilex_expect;
7987 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7988 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7989 PL_lex_starts = proto_perl->Ilex_starts;
7990 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7991 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7992 PL_lex_op = proto_perl->Ilex_op;
7993 PL_lex_inpat = proto_perl->Ilex_inpat;
7994 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7995 PL_lex_brackets = proto_perl->Ilex_brackets;
7996 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7997 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7998 PL_lex_casemods = proto_perl->Ilex_casemods;
7999 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8000 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8001
8002 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8003 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8004 PL_nexttoke = proto_perl->Inexttoke;
8005
8006 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8007 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8008 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8009 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8010 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8011 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8012 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8013 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8014 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8015 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8016 PL_pending_ident = proto_perl->Ipending_ident;
8017 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8018
8019 PL_expect = proto_perl->Iexpect;
8020
8021 PL_multi_start = proto_perl->Imulti_start;
8022 PL_multi_end = proto_perl->Imulti_end;
8023 PL_multi_open = proto_perl->Imulti_open;
8024 PL_multi_close = proto_perl->Imulti_close;
8025
8026 PL_error_count = proto_perl->Ierror_count;
8027 PL_subline = proto_perl->Isubline;
8028 PL_subname = sv_dup_inc(proto_perl->Isubname);
8029
8030 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8031 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8032 PL_padix = proto_perl->Ipadix;
8033 PL_padix_floor = proto_perl->Ipadix_floor;
8034 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8035
8036 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8037 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8038 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8039 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8040 PL_last_lop_op = proto_perl->Ilast_lop_op;
8041 PL_in_my = proto_perl->Iin_my;
8042 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8043#ifdef FCRYPT
8044 PL_cryptseen = proto_perl->Icryptseen;
8045#endif
8046
8047 PL_hints = proto_perl->Ihints;
8048
8049 PL_amagic_generation = proto_perl->Iamagic_generation;
8050
8051#ifdef USE_LOCALE_COLLATE
8052 PL_collation_ix = proto_perl->Icollation_ix;
8053 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8054 PL_collation_standard = proto_perl->Icollation_standard;
8055 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8056 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8057#endif /* USE_LOCALE_COLLATE */
8058
8059#ifdef USE_LOCALE_NUMERIC
8060 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8061 PL_numeric_standard = proto_perl->Inumeric_standard;
8062 PL_numeric_local = proto_perl->Inumeric_local;
8063 PL_numeric_radix = proto_perl->Inumeric_radix;
8064#endif /* !USE_LOCALE_NUMERIC */
8065
8066 /* utf8 character classes */
8067 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8068 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8069 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8070 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8071 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8072 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8073 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8074 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8075 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8076 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8077 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8078 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8079 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8080 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8081 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8082 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8083 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8084
8085 /* swatch cache */
8086 PL_last_swash_hv = Nullhv; /* reinits on demand */
8087 PL_last_swash_klen = 0;
8088 PL_last_swash_key[0]= '\0';
8089 PL_last_swash_tmps = (U8*)NULL;
8090 PL_last_swash_slen = 0;
8091
8092 /* perly.c globals */
8093 PL_yydebug = proto_perl->Iyydebug;
8094 PL_yynerrs = proto_perl->Iyynerrs;
8095 PL_yyerrflag = proto_perl->Iyyerrflag;
8096 PL_yychar = proto_perl->Iyychar;
8097 PL_yyval = proto_perl->Iyyval;
8098 PL_yylval = proto_perl->Iyylval;
8099
8100 PL_glob_index = proto_perl->Iglob_index;
8101 PL_srand_called = proto_perl->Isrand_called;
8102 PL_uudmap['M'] = 0; /* reinits on demand */
8103 PL_bitcount = Nullch; /* reinits on demand */
8104
8105 if (proto_perl->Ipsig_ptr) {
8106 int sig_num[] = { SIG_NUM };
8107 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8108 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8109 for (i = 1; PL_sig_name[i]; i++) {
8110 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8111 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8112 }
8113 }
8114 else {
8115 PL_psig_ptr = (SV**)NULL;
8116 PL_psig_name = (SV**)NULL;
8117 }
8118
8119 /* thrdvar.h stuff */
8120
8121 if (flags & 1) {
8122 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8123 PL_tmps_ix = proto_perl->Ttmps_ix;
8124 PL_tmps_max = proto_perl->Ttmps_max;
8125 PL_tmps_floor = proto_perl->Ttmps_floor;
8126 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8127 i = 0;
8128 while (i <= PL_tmps_ix) {
8129 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8130 ++i;
8131 }
8132
8133 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8134 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8135 Newz(54, PL_markstack, i, I32);
8136 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8137 - proto_perl->Tmarkstack);
8138 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8139 - proto_perl->Tmarkstack);
8140 Copy(proto_perl->Tmarkstack, PL_markstack,
8141 PL_markstack_ptr - PL_markstack + 1, I32);
8142
8143 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8144 * NOTE: unlike the others! */
8145 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8146 PL_scopestack_max = proto_perl->Tscopestack_max;
8147 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8148 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8149
8150 /* next push_return() sets PL_retstack[PL_retstack_ix]
8151 * NOTE: unlike the others! */
8152 PL_retstack_ix = proto_perl->Tretstack_ix;
8153 PL_retstack_max = proto_perl->Tretstack_max;
8154 Newz(54, PL_retstack, PL_retstack_max, OP*);
8155 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8156
8157 /* NOTE: si_dup() looks at PL_markstack */
8158 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8159
8160 /* PL_curstack = PL_curstackinfo->si_stack; */
8161 PL_curstack = av_dup(proto_perl->Tcurstack);
8162 PL_mainstack = av_dup(proto_perl->Tmainstack);
8163
8164 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8165 PL_stack_base = AvARRAY(PL_curstack);
8166 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8167 - proto_perl->Tstack_base);
8168 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8169
8170 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8171 * NOTE: unlike the others! */
8172 PL_savestack_ix = proto_perl->Tsavestack_ix;
8173 PL_savestack_max = proto_perl->Tsavestack_max;
8174 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8175 PL_savestack = ss_dup(proto_perl);
8176 }
8177 else {
8178 init_stacks();
985e7056 8179 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8180 }
8181
8182 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8183 PL_top_env = &PL_start_env;
8184
8185 PL_op = proto_perl->Top;
8186
8187 PL_Sv = Nullsv;
8188 PL_Xpv = (XPV*)NULL;
8189 PL_na = proto_perl->Tna;
8190
8191 PL_statbuf = proto_perl->Tstatbuf;
8192 PL_statcache = proto_perl->Tstatcache;
8193 PL_statgv = gv_dup(proto_perl->Tstatgv);
8194 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8195#ifdef HAS_TIMES
8196 PL_timesbuf = proto_perl->Ttimesbuf;
8197#endif
8198
8199 PL_tainted = proto_perl->Ttainted;
8200 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8201 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8202 PL_rs = sv_dup_inc(proto_perl->Trs);
8203 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8204 PL_ofslen = proto_perl->Tofslen;
8205 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8206 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8207 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8208 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8209 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8210 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8211
8212 PL_restartop = proto_perl->Trestartop;
8213 PL_in_eval = proto_perl->Tin_eval;
8214 PL_delaymagic = proto_perl->Tdelaymagic;
8215 PL_dirty = proto_perl->Tdirty;
8216 PL_localizing = proto_perl->Tlocalizing;
8217
14dd3ad8 8218#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8219 PL_protect = proto_perl->Tprotect;
14dd3ad8 8220#endif
1d7c1841
GS		 8221 PL_errors = sv_dup_inc(proto_perl->Terrors);
8222 PL_av_fetch_sv = Nullsv;
8223 PL_hv_fetch_sv = Nullsv;
8224 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8225 PL_modcount = proto_perl->Tmodcount;
8226 PL_lastgotoprobe = Nullop;
8227 PL_dumpindent = proto_perl->Tdumpindent;
8228
8229 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8230 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8231 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8232 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8233 PL_sortcxix = proto_perl->Tsortcxix;
8234 PL_efloatbuf = Nullch; /* reinits on demand */
8235 PL_efloatsize = 0; /* reinits on demand */
8236
8237 /* regex stuff */
8238
8239 PL_screamfirst = NULL;
8240 PL_screamnext = NULL;
8241 PL_maxscream = -1; /* reinits on demand */
8242 PL_lastscream = Nullsv;
8243
8244 PL_watchaddr = NULL;
8245 PL_watchok = Nullch;
8246
8247 PL_regdummy = proto_perl->Tregdummy;
8248 PL_regcomp_parse = Nullch;
8249 PL_regxend = Nullch;
8250 PL_regcode = (regnode*)NULL;
8251 PL_regnaughty = 0;
8252 PL_regsawback = 0;
8253 PL_regprecomp = Nullch;
8254 PL_regnpar = 0;
8255 PL_regsize = 0;
8256 PL_regflags = 0;
8257 PL_regseen = 0;
8258 PL_seen_zerolen = 0;
8259 PL_seen_evals = 0;
8260 PL_regcomp_rx = (regexp*)NULL;
8261 PL_extralen = 0;
8262 PL_colorset = 0; /* reinits PL_colors[] */
8263 /*PL_colors[6] = {0,0,0,0,0,0};*/
8264 PL_reg_whilem_seen = 0;
8265 PL_reginput = Nullch;
8266 PL_regbol = Nullch;
8267 PL_regeol = Nullch;
8268 PL_regstartp = (I32*)NULL;
8269 PL_regendp = (I32*)NULL;
8270 PL_reglastparen = (U32*)NULL;
8271 PL_regtill = Nullch;
8272 PL_regprev = '\n';
8273 PL_reg_start_tmp = (char**)NULL;
8274 PL_reg_start_tmpl = 0;
8275 PL_regdata = (struct reg_data*)NULL;
8276 PL_bostr = Nullch;
8277 PL_reg_flags = 0;
8278 PL_reg_eval_set = 0;
8279 PL_regnarrate = 0;
8280 PL_regprogram = (regnode*)NULL;
8281 PL_regindent = 0;
8282 PL_regcc = (CURCUR*)NULL;
8283 PL_reg_call_cc = (struct re_cc_state*)NULL;
8284 PL_reg_re = (regexp*)NULL;
8285 PL_reg_ganch = Nullch;
8286 PL_reg_sv = Nullsv;
8287 PL_reg_magic = (MAGIC*)NULL;
8288 PL_reg_oldpos = 0;
8289 PL_reg_oldcurpm = (PMOP*)NULL;
8290 PL_reg_curpm = (PMOP*)NULL;
8291 PL_reg_oldsaved = Nullch;
8292 PL_reg_oldsavedlen = 0;
8293 PL_reg_maxiter = 0;
8294 PL_reg_leftiter = 0;
8295 PL_reg_poscache = Nullch;
8296 PL_reg_poscache_size= 0;
8297
8298 /* RE engine - function pointers */
8299 PL_regcompp = proto_perl->Tregcompp;
8300 PL_regexecp = proto_perl->Tregexecp;
8301 PL_regint_start = proto_perl->Tregint_start;
8302 PL_regint_string = proto_perl->Tregint_string;
8303 PL_regfree = proto_perl->Tregfree;
8304
8305 PL_reginterp_cnt = 0;
8306 PL_reg_starttry = 0;
8307
8308#ifdef PERL_OBJECT
8309 return (PerlInterpreter*)pPerl;
8310#else
8311 return my_perl;
8312#endif
8313}
8314
8315#else /* !USE_ITHREADS */
51371543
GS		 8316
8317#ifdef PERL_OBJECT
51371543
GS		 8318#include "XSUB.h"
8319#endif
8320
1d7c1841
GS		 8321#endif /* USE_ITHREADS */
8322
51371543
GS		 8323static void
8324do_report_used(pTHXo_ SV *sv)
8325{
8326 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8327 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8328 sv_dump(sv);
8329 }
8330}
8331
8332static void
8333do_clean_objs(pTHXo_ SV *sv)
8334{
8335 SV* rv;
8336
8337 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8338 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8b6e653b
HS		 8339 if (SvWEAKREF(sv)) {
8340 sv_del_backref(sv);
8341 SvWEAKREF_off(sv);
8342 SvRV(sv) = 0;
8343 } else {
8344 SvROK_off(sv);
8345 SvRV(sv) = 0;
8346 SvREFCNT_dec(rv);
8347 }
51371543
GS		 8348 }
8349
8350 /* XXX Might want to check arrays, etc. */
8351}
8352
8353#ifndef DISABLE_DESTRUCTOR_KLUDGE
8354static void
8355do_clean_named_objs(pTHXo_ SV *sv)
8356{
f472eb5c 8357 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8358 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8359 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8360 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8361 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8362 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8363 {
8364 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8365 SvREFCNT_dec(sv);
8366 }
8367 }
8368}
8369#endif
8370
8371static void
8372do_clean_all(pTHXo_ SV *sv)
8373{
1d7c1841 8374 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8375 SvFLAGS(sv) |= SVf_BREAK;
8376 SvREFCNT_dec(sv);
8377}
8af02333 8378
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