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[perl5.git] / sv.c
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a0d0e21e 1/* sv.c
79072805 2 *
bc89e66f 3 * Copyright (c) 1991-2001, 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:
411caa50
JH		 1288 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1289 PL_op_desc[PL_op->op_type]);
463ee0b2 1290 }
a0d0e21e 1291 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1292 SvIVX(sv) = i;
463ee0b2 1293 SvTAINT(sv);
79072805
LW		 1294}
1295
954c1994
GS		 1296/*
1297=for apidoc sv_setiv_mg
1298
1299Like C<sv_setiv>, but also handles 'set' magic.
1300
1301=cut
1302*/
1303
79072805 1304void
864dbfa3 1305Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1306{
1307 sv_setiv(sv,i);
1308 SvSETMAGIC(sv);
1309}
1310
954c1994
GS		 1311/*
1312=for apidoc sv_setuv
1313
1314Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1315See C<sv_setuv_mg>.
1316
1317=cut
1318*/
1319
ef50df4b 1320void
864dbfa3 1321Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1322{
55ada374
NC		 1323 /* With these two if statements:
1324 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
d460ef45 1325
55ada374
NC		 1326 without
1327 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
d460ef45 1328
55ada374
NC		 1329 If you wish to remove them, please benchmark to see what the effect is
1330 */
28e5dec8
JH		 1331 if (u <= (UV)IV_MAX) {
1332 sv_setiv(sv, (IV)u);
1333 return;
1334 }
25da4f38
IZ		 1335 sv_setiv(sv, 0);
1336 SvIsUV_on(sv);
1337 SvUVX(sv) = u;
55497cff 1338}
1339
954c1994
GS		 1340/*
1341=for apidoc sv_setuv_mg
1342
1343Like C<sv_setuv>, but also handles 'set' magic.
1344
1345=cut
1346*/
1347
55497cff 1348void
864dbfa3 1349Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b 1350{
55ada374
NC		 1351 /* With these two if statements:
1352 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
d460ef45 1353
55ada374
NC		 1354 without
1355 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
d460ef45 1356
55ada374
NC		 1357 If you wish to remove them, please benchmark to see what the effect is
1358 */
28e5dec8
JH		 1359 if (u <= (UV)IV_MAX) {
1360 sv_setiv(sv, (IV)u);
1361 } else {
1362 sv_setiv(sv, 0);
1363 SvIsUV_on(sv);
1364 sv_setuv(sv,u);
1365 }
ef50df4b
GS		 1366 SvSETMAGIC(sv);
1367}
1368
954c1994
GS		 1369/*
1370=for apidoc sv_setnv
1371
1372Copies a double into the given SV. Does not handle 'set' magic. See
1373C<sv_setnv_mg>.
1374
1375=cut
1376*/
1377
ef50df4b 1378void
65202027 1379Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1380{
2213622d 1381 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1382 switch (SvTYPE(sv)) {
1383 case SVt_NULL:
1384 case SVt_IV:
79072805 1385 sv_upgrade(sv, SVt_NV);
a0d0e21e 1386 break;
a0d0e21e
LW		 1387 case SVt_RV:
1388 case SVt_PV:
1389 case SVt_PVIV:
79072805 1390 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1391 break;
827b7e14 1392
a0d0e21e 1393 case SVt_PVGV:
a0d0e21e
LW		 1394 case SVt_PVAV:
1395 case SVt_PVHV:
1396 case SVt_PVCV:
1397 case SVt_PVFM:
1398 case SVt_PVIO:
411caa50
JH		 1399 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1400 PL_op_name[PL_op->op_type]);
79072805 1401 }
463ee0b2 1402 SvNVX(sv) = num;
a0d0e21e 1403 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1404 SvTAINT(sv);
79072805
LW		 1405}
1406
954c1994
GS		 1407/*
1408=for apidoc sv_setnv_mg
1409
1410Like C<sv_setnv>, but also handles 'set' magic.
1411
1412=cut
1413*/
1414
ef50df4b 1415void
65202027 1416Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1417{
1418 sv_setnv(sv,num);
1419 SvSETMAGIC(sv);
1420}
1421
76e3520e 1422STATIC void
cea2e8a9 1423S_not_a_number(pTHX_ SV *sv)
a0d0e21e
LW		 1424{
1425 char tmpbuf[64];
1426 char *d = tmpbuf;
1427 char *s;
dc28f22b
GA		 1428 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1429 /* each *s can expand to 4 chars + "...\0",
1430 i.e. need room for 8 chars */
a0d0e21e 1431
dc28f22b 1432 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1433 int ch = *s & 0xFF;
1434 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1435 *d++ = 'M';
1436 *d++ = '-';
1437 ch &= 127;
1438 }
bbce6d69 1439 if (ch == '\n') {
1440 *d++ = '\\';
1441 *d++ = 'n';
1442 }
1443 else if (ch == '\r') {
1444 *d++ = '\\';
1445 *d++ = 'r';
1446 }
1447 else if (ch == '\f') {
1448 *d++ = '\\';
1449 *d++ = 'f';
1450 }
1451 else if (ch == '\\') {
1452 *d++ = '\\';
1453 *d++ = '\\';
1454 }
1455 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1456 *d++ = ch;
1457 else {
1458 *d++ = '^';
bbce6d69 1459 *d++ = toCTRL(ch);
a0d0e21e
LW		 1460 }
1461 }
1462 if (*s) {
1463 *d++ = '.';
1464 *d++ = '.';
1465 *d++ = '.';
1466 }
1467 *d = '\0';
1468
533c011a 1469 if (PL_op)
42d38218
MS		 1470 Perl_warner(aTHX_ WARN_NUMERIC,
1471 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1472 PL_op_desc[PL_op->op_type]);
a0d0e21e 1473 else
42d38218
MS		 1474 Perl_warner(aTHX_ WARN_NUMERIC,
1475 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1476}
1477
28e5dec8
JH		 1478/* the number can be converted to integer with atol() or atoll() although */
1479#define IS_NUMBER_TO_INT_BY_ATOL 0x01 /* integer (may have decimals) */
1480#define IS_NUMBER_TO_INT_BY_STRTOL 0x02 /* it may exceed IV_MAX */
1481#define IS_NUMBER_TO_INT_BY_ATOF 0x04 /* seen something like 123e4 */
1482#define IS_NUMBER_LONGER_THAN_IV_MAX 0x08 /* more digits than IV_MAX */
1483#define IS_NUMBER_AS_LONG_AS_IV_MAX 0x10 /* may(be not) larger than IV_MAX */
1484#define IS_NUMBER_NOT_INT 0x20 /* seen a decimal point or e */
1485#define IS_NUMBER_NEG 0x40 /* seen a leading - */
1486#define IS_NUMBER_INFINITY 0x80 /* /^\s*-?Infinity\s*$/i */
25da4f38
IZ		 1487
1488/* Actually, ISO C leaves conversion of UV to IV undefined, but
1489 until proven guilty, assume that things are not that bad... */
1490
28e5dec8
JH		 1491/* As 64 bit platforms often have an NV that doesn't preserve all bits of
1492 an IV (an assumption perl has been based on to date) it becomes necessary
1493 to remove the assumption that the NV always carries enough precision to
1494 recreate the IV whenever needed, and that the NV is the canonical form.
1495 Instead, IV/UV and NV need to be given equal rights. So as to not lose
1496 precision as an side effect of conversion (which would lead to insanity
1497 and the dragon(s) in t/op/numconvert.t getting very angry) the intent is
1498 1) to distinguish between IV/UV/NV slots that have cached a valid
1499 conversion where precision was lost and IV/UV/NV slots that have a
1500 valid conversion which has lost no precision
1501 2) to ensure that if a numeric conversion to one form is request that
1502 would lose precision, the precise conversion (or differently
1503 imprecise conversion) is also performed and cached, to prevent
1504 requests for different numeric formats on the same SV causing
1505 lossy conversion chains. (lossless conversion chains are perfectly
1506 acceptable (still))
1507
1508
1509 flags are used:
1510 SvIOKp is true if the IV slot contains a valid value
1511 SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true)
1512 SvNOKp is true if the NV slot contains a valid value
1513 SvNOK is true only if the NV value is accurate
1514
1515 so
1516 while converting from PV to NV check to see if converting that NV to an
1517 IV(or UV) would lose accuracy over a direct conversion from PV to
1518 IV(or UV). If it would, cache both conversions, return NV, but mark
1519 SV as IOK NOKp (ie not NOK).
1520
1521 while converting from PV to IV check to see if converting that IV to an
1522 NV would lose accuracy over a direct conversion from PV to NV. If it
1523 would, cache both conversions, flag similarly.
1524
1525 Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite
1526 correctly because if IV & NV were set NV *always* overruled.
1527 Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flags meaning
1528 changes - now IV and NV together means that the two are interchangeable
1529 SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX;
d460ef45 1530
28e5dec8
JH		 1531 The benefit of this is operations such as pp_add know that if SvIOK is
1532 true for both left and right operands, then integer addition can be
1533 used instead of floating point. (for cases where the result won't
1534 overflow) Before, floating point was always used, which could lead to
1535 loss of precision compared with integer addition.
1536
1537 * making IV and NV equal status should make maths accurate on 64 bit
1538 platforms
1539 * may speed up maths somewhat if pp_add and friends start to use
1540 integers when possible instead of fp. (hopefully the overhead in
1541 looking for SvIOK and checking for overflow will not outweigh the
1542 fp to integer speedup)
1543 * will slow down integer operations (callers of SvIV) on "inaccurate"
1544 values, as the change from SvIOK to SvIOKp will cause a call into
1545 sv_2iv each time rather than a macro access direct to the IV slot
1546 * should speed up number->string conversion on integers as IV is
1547 favoured when IV and NV equally accurate
1548
1549 ####################################################################
1550 You had better be using SvIOK_notUV if you want an IV for arithmetic
1551 SvIOK is true if (IV or UV), so you might be getting (IV)SvUV
1552 SvUOK is true iff UV.
1553 ####################################################################
1554
1555 Your mileage will vary depending your CPUs relative fp to integer
1556 performance ratio.
1557*/
1558
1559#ifndef NV_PRESERVES_UV
1560#define IS_NUMBER_UNDERFLOW_IV 1
1561#define IS_NUMBER_UNDERFLOW_UV 2
1562#define IS_NUMBER_IV_AND_UV 2
1563#define IS_NUMBER_OVERFLOW_IV 4
1564#define IS_NUMBER_OVERFLOW_UV 5
1565/* Hopefully your optimiser will consider inlining these two functions. */
1566STATIC int
1567S_sv_2inuv_non_preserve (pTHX_ register SV *sv, I32 numtype) {
1568 NV nv = SvNVX(sv); /* Code simpler and had compiler problems if */
1569 UV nv_as_uv = U_V(nv); /* these are not in simple variables. */
159fae86 1570 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2inuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, (UV)numtype));
28e5dec8
JH		 1571 if (nv_as_uv <= (UV)IV_MAX) {
1572 (void)SvIOKp_on(sv);
1573 (void)SvNOKp_on(sv);
1574 /* Within suitable range to fit in an IV, atol won't overflow */
1575 /* XXX quite sure? Is that your final answer? not really, I'm
1576 trusting that nv_as_uv to round down if NV is (IV_MAX + 1) */
1577 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1578 if (numtype & IS_NUMBER_NOT_INT) {
1579 /* I believe that even if the original PV had decimals, they
1580 are lost beyond the limit of the FP precision.
1581 However, neither is canonical, so both only get p flags.
1582 NWC, 2000/11/25 */
1583 /* Both already have p flags, so do nothing */
1584 } else if (SvIVX(sv) == I_V(nv)) {
1585 SvNOK_on(sv);
1586 SvIOK_on(sv);
1587 } else {
1588 SvIOK_on(sv);
1589 /* It had no "." so it must be integer. assert (get in here from
1590 sv_2iv and sv_2uv only for ndef HAS_STRTOL and
1591 IS_NUMBER_AS_LONG_AS_IV_MAX) or my logic is faulty and all
1592 conversion routines need audit. */
1593 }
1594 return nv < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1595 }
1596 /* between IV_MAX and NV(UV_MAX). Could be slightly> UV_MAX */
1597 (void)SvIOKp_on(sv);
1598 (void)SvNOKp_on(sv);
1599#ifdef HAS_STRTOUL
1600 {
1601 int save_errno = errno;
1602 errno = 0;
1603 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1604 if (errno == 0) {
1605 if (numtype & IS_NUMBER_NOT_INT) {
1606 /* UV and NV both imprecise. */
1607 SvIsUV_on(sv);
1608 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1609 SvNOK_on(sv);
1610 SvIOK_on(sv);
1611 SvIsUV_on(sv);
1612 } else {
1613 SvIOK_on(sv);
1614 SvIsUV_on(sv);
1615 }
1616 errno = save_errno;
1617 return IS_NUMBER_OVERFLOW_IV;
1618 }
1619 errno = save_errno;
1620 SvNOK_on(sv);
1621 /* Must have just overflowed UV, but not enough that an NV could spot
1622 this.. */
1623 return IS_NUMBER_OVERFLOW_UV;
1624 }
1625#else
1626 /* We've just lost integer precision, nothing we could do. */
1627 SvUVX(sv) = nv_as_uv;
159fae86 1628 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2niuv_non UV? '%s', UV=0x%"UVxf" NV=%g U_V(NV)=0x%"UVxf" inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, nv_as_uv, (UV)numtype));
28e5dec8
JH		 1629 /* UV and NV slots equally valid only if we have casting symmetry. */
1630 if (numtype & IS_NUMBER_NOT_INT) {
1631 SvIsUV_on(sv);
1632 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1633 /* UV_MAX can cast up to NV (UV_MAX+1), that NV casts down to UV_MAX
1634 UV_MAX ought to be 0xFF...FFF which won't preserve (We only
1635 get to this point if NVs don't preserve UVs) */
1636 SvNOK_on(sv);
1637 SvIOK_on(sv);
1638 SvIsUV_on(sv);
1639 } else {
1640 /* As above, I believe UV at least as good as NV */
1641 SvIsUV_on(sv);
1642 }
1643#endif /* HAS_STRTOUL */
1644 return IS_NUMBER_OVERFLOW_IV;
1645}
1646
1647/* For sv_2nv these three cases are "SvNOK and don't bother casting" */
1648STATIC int
1649S_sv_2iuv_non_preserve (pTHX_ register SV *sv, I32 numtype)
1650{
159fae86 1651 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), SvNVX(sv), (UV)numtype));
28e5dec8
JH		 1652 if (SvNVX(sv) < (NV)IV_MIN) {
1653 (void)SvIOKp_on(sv);
1654 (void)SvNOK_on(sv);
1655 SvIVX(sv) = IV_MIN;
1656 return IS_NUMBER_UNDERFLOW_IV;
1657 }
1658 if (SvNVX(sv) > (NV)UV_MAX) {
1659 (void)SvIOKp_on(sv);
1660 (void)SvNOK_on(sv);
1661 SvIsUV_on(sv);
1662 SvUVX(sv) = UV_MAX;
1663 return IS_NUMBER_OVERFLOW_UV;
1664 }
1665 if (!(numtype & (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
1666 (void)SvIOKp_on(sv);
1667 (void)SvNOK_on(sv);
1668 /* Can't use strtol etc to convert this string */
1669 if (SvNVX(sv) <= (UV)IV_MAX) {
1670 SvIVX(sv) = I_V(SvNVX(sv));
1671 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1672 SvIOK_on(sv); /* Integer is precise. NOK, IOK */
1673 } else {
1674 /* Integer is imprecise. NOK, IOKp */
1675 }
1676 return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1677 }
1678 SvIsUV_on(sv);
1679 SvUVX(sv) = U_V(SvNVX(sv));
1680 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
09bb3e27
NC		 1681 if (SvUVX(sv) == UV_MAX) {
1682 /* As we know that NVs don't preserve UVs, UV_MAX cannot
1683 possibly be preserved by NV. Hence, it must be overflow.
1684 NOK, IOKp */
1685 return IS_NUMBER_OVERFLOW_UV;
1686 }
28e5dec8
JH		 1687 SvIOK_on(sv); /* Integer is precise. NOK, UOK */
1688 } else {
1689 /* Integer is imprecise. NOK, IOKp */
1690 }
1691 return IS_NUMBER_OVERFLOW_IV;
1692 }
e57fe1aa 1693 return S_sv_2inuv_non_preserve(aTHX_ sv, numtype);
28e5dec8
JH		 1694}
1695#endif /* NV_PRESERVES_UV*/
1696
a0d0e21e 1697IV
864dbfa3 1698Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1699{
1700 if (!sv)
1701 return 0;
8990e307 1702 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1703 mg_get(sv);
1704 if (SvIOKp(sv))
1705 return SvIVX(sv);
748a9306 1706 if (SvNOKp(sv)) {
25da4f38 1707 return I_V(SvNVX(sv));
748a9306 1708 }
36477c24 1709 if (SvPOKp(sv) && SvLEN(sv))
1710 return asIV(sv);
3fe9a6f1 1711 if (!SvROK(sv)) {
d008e5eb 1712 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 1713 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1714 report_uninit();
c6ee37c5 1715 }
36477c24 1716 return 0;
3fe9a6f1 1717 }
463ee0b2 1718 }
ed6116ce 1719 if (SvTHINKFIRST(sv)) {
a0d0e21e 1720 if (SvROK(sv)) {
a0d0e21e 1721 SV* tmpstr;
1554e226
DC		 1722 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1723 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1724 return SvIV(tmpstr);
56431972 1725 return PTR2IV(SvRV(sv));
a0d0e21e 1726 }
47deb5e7
NIS		 1727 if (SvREADONLY(sv) && SvFAKE(sv)) {
1728 sv_force_normal(sv);
1729 }
0336b60e 1730 if (SvREADONLY(sv) && !SvOK(sv)) {
0336b60e 1731 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1732 report_uninit();
ed6116ce
LW		 1733 return 0;
1734 }
79072805 1735 }
25da4f38
IZ		 1736 if (SvIOKp(sv)) {
1737 if (SvIsUV(sv)) {
1738 return (IV)(SvUVX(sv));
1739 }
1740 else {
1741 return SvIVX(sv);
1742 }
463ee0b2 1743 }
748a9306 1744 if (SvNOKp(sv)) {
28e5dec8
JH		 1745 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
1746 * without also getting a cached IV/UV from it at the same time
1747 * (ie PV->NV conversion should detect loss of accuracy and cache
1748 * IV or UV at same time to avoid this. NWC */
25da4f38
IZ		 1749
1750 if (SvTYPE(sv) == SVt_NV)
1751 sv_upgrade(sv, SVt_PVNV);
1752
28e5dec8
JH		 1753 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
1754 /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost
1755 certainly cast into the IV range at IV_MAX, whereas the correct
1756 answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary
1757 cases go to UV */
1758 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
748a9306 1759 SvIVX(sv) = I_V(SvNVX(sv));
28e5dec8
JH		 1760 if (SvNVX(sv) == (NV) SvIVX(sv)
1761#ifndef NV_PRESERVES_UV
1762 && (((UV)1 << NV_PRESERVES_UV_BITS) >
1763 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
1764 /* Don't flag it as "accurately an integer" if the number
1765 came from a (by definition imprecise) NV operation, and
1766 we're outside the range of NV integer precision */
1767#endif
1768 ) {
1769 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
1770 DEBUG_c(PerlIO_printf(Perl_debug_log,
1771 "0x%"UVxf" iv(%g => %"IVdf") (precise)\n",
1772 PTR2UV(sv),
1773 SvNVX(sv),
1774 SvIVX(sv)));
1775
1776 } else {
1777 /* IV not precise. No need to convert from PV, as NV
1778 conversion would already have cached IV if it detected
1779 that PV->IV would be better than PV->NV->IV
1780 flags already correct - don't set public IOK. */
1781 DEBUG_c(PerlIO_printf(Perl_debug_log,
1782 "0x%"UVxf" iv(%g => %"IVdf") (imprecise)\n",
1783 PTR2UV(sv),
1784 SvNVX(sv),
1785 SvIVX(sv)));
1786 }
1787 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
1788 but the cast (NV)IV_MIN rounds to a the value less (more
1789 negative) than IV_MIN which happens to be equal to SvNVX ??
1790 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
1791 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
1792 (NV)UVX == NVX are both true, but the values differ. :-(
1793 Hopefully for 2s complement IV_MIN is something like
1794 0x8000000000000000 which will be exact. NWC */
d460ef45 1795 }
25da4f38 1796 else {
ff68c719 1797 SvUVX(sv) = U_V(SvNVX(sv));
28e5dec8
JH		 1798 if (
1799 (SvNVX(sv) == (NV) SvUVX(sv))
1800#ifndef NV_PRESERVES_UV
1801 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
1802 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
1803 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
1804 /* Don't flag it as "accurately an integer" if the number
1805 came from a (by definition imprecise) NV operation, and
1806 we're outside the range of NV integer precision */
1807#endif
1808 )
1809 SvIOK_on(sv);
25da4f38
IZ		 1810 SvIsUV_on(sv);
1811 ret_iv_max:
1c846c1f 1812 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1813 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1814 PTR2UV(sv),
57def98f
JH		 1815 SvUVX(sv),
1816 SvUVX(sv)));
25da4f38
IZ		 1817 return (IV)SvUVX(sv);
1818 }
748a9306
LW		 1819 }
1820 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1821 I32 numtype = looks_like_number(sv);
1822
1823 /* We want to avoid a possible problem when we cache an IV which
1824 may be later translated to an NV, and the resulting NV is not
1825 the translation of the initial data.
1c846c1f 1826
25da4f38
IZ		 1827 This means that if we cache such an IV, we need to cache the
1828 NV as well. Moreover, we trade speed for space, and do not
28e5dec8 1829 cache the NV if we are sure it's not needed.
25da4f38 1830 */
16b7a9a4 1831
28e5dec8
JH		 1832 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
1833 /* The NV may be reconstructed from IV - safe to cache IV,
1834 which may be calculated by atol(). */
1835 if (SvTYPE(sv) < SVt_PVIV)
1836 sv_upgrade(sv, SVt_PVIV);
f7bbb42a 1837 (void)SvIOK_on(sv);
28e5dec8
JH		 1838 SvIVX(sv) = Atol(SvPVX(sv));
1839 } else {
1840#ifdef HAS_STRTOL
1841 IV i;
1842 int save_errno = errno;
1843 /* Is it an integer that we could convert with strtol?
1844 So try it, and if it doesn't set errno then it's pukka.
1845 This should be faster than going atof and then thinking. */
1846 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
1847 == IS_NUMBER_TO_INT_BY_STRTOL)
1848 /* && is a sequence point. Without it not sure if I'm trying
1849 to do too much between sequence points and hence going
1850 undefined */
1851 && ((errno = 0), 1) /* , 1 so always true */
1852 && ((i = Strtol(SvPVX(sv), Null(char**), 10)), 1)
1853 && (errno == 0)) {
1854 if (SvTYPE(sv) < SVt_PVIV)
1855 sv_upgrade(sv, SVt_PVIV);
1856 (void)SvIOK_on(sv);
1857 SvIVX(sv) = i;
1858 errno = save_errno;
1859 } else
1860#endif
1861 {
1862 NV d;
1863#ifdef HAS_STRTOL
1864 /* Hopefully trace flow will optimise this away where possible
1865 */
1866 errno = save_errno;
1867#endif
1868 /* It wasn't an integer, or it overflowed, or we don't have
1869 strtol. Do things the slow way - check if it's a UV etc. */
1870 d = Atof(SvPVX(sv));
1871
1872 if (SvTYPE(sv) < SVt_PVNV)
1873 sv_upgrade(sv, SVt_PVNV);
1874 SvNVX(sv) = d;
1875
1876 if (! numtype && ckWARN(WARN_NUMERIC))
1877 not_a_number(sv);
1878
65202027 1879#if defined(USE_LONG_DOUBLE)
28e5dec8
JH		 1880 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n",
1881 PTR2UV(sv), SvNVX(sv)));
65202027 1882#else
28e5dec8
JH		 1883 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%g)\n",
1884 PTR2UV(sv), SvNVX(sv)));
65202027 1885#endif
28e5dec8
JH		 1886
1887
1888#ifdef NV_PRESERVES_UV
1889 (void)SvIOKp_on(sv);
1890 (void)SvNOK_on(sv);
1891 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
1892 SvIVX(sv) = I_V(SvNVX(sv));
1893 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1894 SvIOK_on(sv);
1895 } else {
1896 /* Integer is imprecise. NOK, IOKp */
1897 }
1898 /* UV will not work better than IV */
1899 } else {
1900 if (SvNVX(sv) > (NV)UV_MAX) {
1901 SvIsUV_on(sv);
1902 /* Integer is inaccurate. NOK, IOKp, is UV */
1903 SvUVX(sv) = UV_MAX;
1904 SvIsUV_on(sv);
1905 } else {
1906 SvUVX(sv) = U_V(SvNVX(sv));
1907 /* 0xFFFFFFFFFFFFFFFF not an issue in here */
1908 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
1909 SvIOK_on(sv);
1910 SvIsUV_on(sv);
1911 } else {
1912 /* Integer is imprecise. NOK, IOKp, is UV */
1913 SvIsUV_on(sv);
1914 }
1915 }
1916 goto ret_iv_max;
1917 }
1918#else /* NV_PRESERVES_UV */
1919 if (((UV)1 << NV_PRESERVES_UV_BITS) >
1920 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
1921 /* Small enough to preserve all bits. */
1922 (void)SvIOKp_on(sv);
1923 SvNOK_on(sv);
1924 SvIVX(sv) = I_V(SvNVX(sv));
1925 if ((NV)(SvIVX(sv)) == SvNVX(sv))
1926 SvIOK_on(sv);
1927 /* Assumption: first non-preserved integer is < IV_MAX,
1928 this NV is in the preserved range, therefore: */
1929 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
1930 < (UV)IV_MAX)) {
1931 Perl_croak(aTHX_ "sv_2iv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
1932 }
1933 } else if (sv_2iuv_non_preserve (sv, numtype)
1934 >= IS_NUMBER_OVERFLOW_IV)
1935 goto ret_iv_max;
1936#endif /* NV_PRESERVES_UV */
25da4f38
IZ		 1937 }
1938 }
28e5dec8 1939 } else {
599cee73 1940 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1941 report_uninit();
25da4f38
IZ		 1942 if (SvTYPE(sv) < SVt_IV)
1943 /* Typically the caller expects that sv_any is not NULL now. */
1944 sv_upgrade(sv, SVt_IV);
a0d0e21e 1945 return 0;
79072805 1946 }
1d7c1841
GS		 1947 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1948 PTR2UV(sv),SvIVX(sv)));
25da4f38 1949 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1950}
1951
ff68c719 1952UV
864dbfa3 1953Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1954{
1955 if (!sv)
1956 return 0;
1957 if (SvGMAGICAL(sv)) {
1958 mg_get(sv);
1959 if (SvIOKp(sv))
1960 return SvUVX(sv);
1961 if (SvNOKp(sv))
1962 return U_V(SvNVX(sv));
36477c24 1963 if (SvPOKp(sv) && SvLEN(sv))
1964 return asUV(sv);
3fe9a6f1 1965 if (!SvROK(sv)) {
d008e5eb 1966 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 1967 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1968 report_uninit();
c6ee37c5 1969 }
36477c24 1970 return 0;
3fe9a6f1 1971 }
ff68c719 1972 }
1973 if (SvTHINKFIRST(sv)) {
1974 if (SvROK(sv)) {
ff68c719 1975 SV* tmpstr;
1554e226
DC		 1976 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1977 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1978 return SvUV(tmpstr);
56431972 1979 return PTR2UV(SvRV(sv));
ff68c719 1980 }
8a818333
NIS		 1981 if (SvREADONLY(sv) && SvFAKE(sv)) {
1982 sv_force_normal(sv);
1983 }
0336b60e 1984 if (SvREADONLY(sv) && !SvOK(sv)) {
0336b60e 1985 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1986 report_uninit();
ff68c719 1987 return 0;
1988 }
1989 }
25da4f38
IZ		 1990 if (SvIOKp(sv)) {
1991 if (SvIsUV(sv)) {
1992 return SvUVX(sv);
1993 }
1994 else {
1995 return (UV)SvIVX(sv);
1996 }
ff68c719 1997 }
1998 if (SvNOKp(sv)) {
28e5dec8
JH		 1999 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
2000 * without also getting a cached IV/UV from it at the same time
2001 * (ie PV->NV conversion should detect loss of accuracy and cache
2002 * IV or UV at same time to avoid this. */
2003 /* IV-over-UV optimisation - choose to cache IV if possible */
2004
25da4f38
IZ		 2005 if (SvTYPE(sv) == SVt_NV)
2006 sv_upgrade(sv, SVt_PVNV);
28e5dec8
JH		 2007
2008 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
2009 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
f7bbb42a 2010 SvIVX(sv) = I_V(SvNVX(sv));
28e5dec8
JH		 2011 if (SvNVX(sv) == (NV) SvIVX(sv)
2012#ifndef NV_PRESERVES_UV
2013 && (((UV)1 << NV_PRESERVES_UV_BITS) >
2014 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
2015 /* Don't flag it as "accurately an integer" if the number
2016 came from a (by definition imprecise) NV operation, and
2017 we're outside the range of NV integer precision */
2018#endif
2019 ) {
2020 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
2021 DEBUG_c(PerlIO_printf(Perl_debug_log,
2022 "0x%"UVxf" uv(%g => %"IVdf") (precise)\n",
2023 PTR2UV(sv),
2024 SvNVX(sv),
2025 SvIVX(sv)));
2026
2027 } else {
2028 /* IV not precise. No need to convert from PV, as NV
2029 conversion would already have cached IV if it detected
2030 that PV->IV would be better than PV->NV->IV
2031 flags already correct - don't set public IOK. */
2032 DEBUG_c(PerlIO_printf(Perl_debug_log,
2033 "0x%"UVxf" uv(%g => %"IVdf") (imprecise)\n",
2034 PTR2UV(sv),
2035 SvNVX(sv),
2036 SvIVX(sv)));
2037 }
2038 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
2039 but the cast (NV)IV_MIN rounds to a the value less (more
2040 negative) than IV_MIN which happens to be equal to SvNVX ??
2041 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
2042 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
2043 (NV)UVX == NVX are both true, but the values differ. :-(
2044 Hopefully for 2s complement IV_MIN is something like
2045 0x8000000000000000 which will be exact. NWC */
d460ef45 2046 }
28e5dec8
JH		 2047 else {
2048 SvUVX(sv) = U_V(SvNVX(sv));
2049 if (
2050 (SvNVX(sv) == (NV) SvUVX(sv))
2051#ifndef NV_PRESERVES_UV
2052 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
2053 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
2054 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
2055 /* Don't flag it as "accurately an integer" if the number
2056 came from a (by definition imprecise) NV operation, and
2057 we're outside the range of NV integer precision */
2058#endif
2059 )
2060 SvIOK_on(sv);
2061 SvIsUV_on(sv);
1c846c1f 2062 DEBUG_c(PerlIO_printf(Perl_debug_log,
28e5dec8 2063 "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n",
57def98f 2064 PTR2UV(sv),
28e5dec8
JH		 2065 SvUVX(sv),
2066 SvUVX(sv)));
25da4f38 2067 }
ff68c719 2068 }
2069 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 2070 I32 numtype = looks_like_number(sv);
2071
2072 /* We want to avoid a possible problem when we cache a UV which
2073 may be later translated to an NV, and the resulting NV is not
2074 the translation of the initial data.
1c846c1f 2075
25da4f38
IZ		 2076 This means that if we cache such a UV, we need to cache the
2077 NV as well. Moreover, we trade speed for space, and do not
2078 cache the NV if not needed.
2079 */
16b7a9a4 2080
28e5dec8 2081 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
f7bbb42a 2082 /* The NV may be reconstructed from IV - safe to cache IV,
28e5dec8
JH		 2083 which may be calculated by atol(). */
2084 if (SvTYPE(sv) < SVt_PVIV)
f7bbb42a
JH		 2085 sv_upgrade(sv, SVt_PVIV);
2086 (void)SvIOK_on(sv);
28e5dec8
JH		 2087 SvIVX(sv) = Atol(SvPVX(sv));
2088 } else {
f7bbb42a 2089#ifdef HAS_STRTOUL
28e5dec8 2090 UV u;
f9172815 2091 char *num_begin = SvPVX(sv);
28e5dec8 2092 int save_errno = errno;
d460ef45 2093
f9172815
JH		 2094 /* seems that strtoul taking numbers that start with - is
2095 implementation dependant, and can't be relied upon. */
2096 if (numtype & IS_NUMBER_NEG) {
2097 /* Not totally defensive. assumine that looks_like_num
2098 didn't lie about a - sign */
2099 while (isSPACE(*num_begin))
2100 num_begin++;
2101 if (*num_begin == '-')
2102 num_begin++;
2103 }
d460ef45 2104
28e5dec8
JH		 2105 /* Is it an integer that we could convert with strtoul?
2106 So try it, and if it doesn't set errno then it's pukka.
2107 This should be faster than going atof and then thinking. */
2108 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
2109 == IS_NUMBER_TO_INT_BY_STRTOL)
2110 && ((errno = 0), 1) /* always true */
f9172815 2111 && ((u = Strtoul(num_begin, Null(char**), 10)), 1) /* ditto */
28e5dec8 2112 && (errno == 0)
d460ef45 2113 /* If known to be negative, check it didn't undeflow IV
f9172815
JH		 2114 XXX possibly we should put more negative values as NVs
2115 direct rather than go via atof below */
2116 && ((numtype & IS_NUMBER_NEG) ? (u <= (UV)IV_MIN) : 1)) {
28e5dec8
JH		 2117 errno = save_errno;
2118
2119 if (SvTYPE(sv) < SVt_PVIV)
2120 sv_upgrade(sv, SVt_PVIV);
2121 (void)SvIOK_on(sv);
2122
2123 /* If it's negative must use IV.
2124 IV-over-UV optimisation */
f9172815
JH		 2125 if (numtype & IS_NUMBER_NEG) {
2126 SvIVX(sv) = -(IV)u;
2127 } else if (u <= (UV) IV_MAX) {
28e5dec8
JH		 2128 SvIVX(sv) = (IV)u;
2129 } else {
2130 /* it didn't overflow, and it was positive. */
2131 SvUVX(sv) = u;
2132 SvIsUV_on(sv);
2133 }
2134 } else
f7bbb42a 2135#endif
28e5dec8
JH		 2136 {
2137 NV d;
2138#ifdef HAS_STRTOUL
2139 /* Hopefully trace flow will optimise this away where possible
2140 */
2141 errno = save_errno;
2142#endif
2143 /* It wasn't an integer, or it overflowed, or we don't have
2144 strtol. Do things the slow way - check if it's a IV etc. */
2145 d = Atof(SvPVX(sv));
2146
2147 if (SvTYPE(sv) < SVt_PVNV)
2148 sv_upgrade(sv, SVt_PVNV);
2149 SvNVX(sv) = d;
2150
2151 if (! numtype && ckWARN(WARN_NUMERIC))
2152 not_a_number(sv);
2153
2154#if defined(USE_LONG_DOUBLE)
2155 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n",
2156 PTR2UV(sv), SvNVX(sv)));
2157#else
2158 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%g)\n",
2159 PTR2UV(sv), SvNVX(sv)));
2160#endif
2161
2162#ifdef NV_PRESERVES_UV
2163 (void)SvIOKp_on(sv);
2164 (void)SvNOK_on(sv);
2165 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
2166 SvIVX(sv) = I_V(SvNVX(sv));
2167 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
2168 SvIOK_on(sv);
2169 } else {
2170 /* Integer is imprecise. NOK, IOKp */
2171 }
2172 /* UV will not work better than IV */
2173 } else {
2174 if (SvNVX(sv) > (NV)UV_MAX) {
2175 SvIsUV_on(sv);
2176 /* Integer is inaccurate. NOK, IOKp, is UV */
2177 SvUVX(sv) = UV_MAX;
2178 SvIsUV_on(sv);
2179 } else {
2180 SvUVX(sv) = U_V(SvNVX(sv));
2181 /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs
2182 NV preservse UV so can do correct comparison. */
2183 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
2184 SvIOK_on(sv);
2185 SvIsUV_on(sv);
2186 } else {
2187 /* Integer is imprecise. NOK, IOKp, is UV */
2188 SvIsUV_on(sv);
2189 }
2190 }
2191 }
2192#else /* NV_PRESERVES_UV */
2193 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2194 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
2195 /* Small enough to preserve all bits. */
2196 (void)SvIOKp_on(sv);
2197 SvNOK_on(sv);
2198 SvIVX(sv) = I_V(SvNVX(sv));
2199 if ((NV)(SvIVX(sv)) == SvNVX(sv))
2200 SvIOK_on(sv);
2201 /* Assumption: first non-preserved integer is < IV_MAX,
2202 this NV is in the preserved range, therefore: */
2203 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
2204 < (UV)IV_MAX)) {
2205 Perl_croak(aTHX_ "sv_2uv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
2206 }
2207 } else
2208 sv_2iuv_non_preserve (sv, numtype);
2209#endif /* NV_PRESERVES_UV */
2210 }
f7bbb42a 2211 }
ff68c719 2212 }
2213 else {
d008e5eb 2214 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 2215 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2216 report_uninit();
c6ee37c5 2217 }
25da4f38
IZ		 2218 if (SvTYPE(sv) < SVt_IV)
2219 /* Typically the caller expects that sv_any is not NULL now. */
2220 sv_upgrade(sv, SVt_IV);
ff68c719 2221 return 0;
2222 }
25da4f38 2223
1d7c1841
GS		 2224 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
2225 PTR2UV(sv),SvUVX(sv)));
25da4f38 2226 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 2227}
2228
65202027 2229NV
864dbfa3 2230Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 2231{
2232 if (!sv)
2233 return 0.0;
8990e307 2234 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2235 mg_get(sv);
2236 if (SvNOKp(sv))
2237 return SvNVX(sv);
a0d0e21e 2238 if (SvPOKp(sv) && SvLEN(sv)) {
599cee73 2239 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 2240 not_a_number(sv);
097ee67d 2241 return Atof(SvPVX(sv));
a0d0e21e 2242 }
25da4f38 2243 if (SvIOKp(sv)) {
1c846c1f 2244 if (SvIsUV(sv))
65202027 2245 return (NV)SvUVX(sv);
25da4f38 2246 else
65202027 2247 return (NV)SvIVX(sv);
25da4f38 2248 }
16d20bd9 2249 if (!SvROK(sv)) {
d008e5eb 2250 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 2251 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2252 report_uninit();
c6ee37c5 2253 }
16d20bd9
AD		 2254 return 0;
2255 }
463ee0b2 2256 }
ed6116ce 2257 if (SvTHINKFIRST(sv)) {
a0d0e21e 2258 if (SvROK(sv)) {
a0d0e21e 2259 SV* tmpstr;
1554e226
DC		 2260 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
2261 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2262 return SvNV(tmpstr);
56431972 2263 return PTR2NV(SvRV(sv));
a0d0e21e 2264 }
8a818333
NIS		 2265 if (SvREADONLY(sv) && SvFAKE(sv)) {
2266 sv_force_normal(sv);
2267 }
0336b60e 2268 if (SvREADONLY(sv) && !SvOK(sv)) {
599cee73 2269 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2270 report_uninit();
ed6116ce
LW		 2271 return 0.0;
2272 }
79072805
LW		 2273 }
2274 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 2275 if (SvTYPE(sv) == SVt_IV)
2276 sv_upgrade(sv, SVt_PVNV);
2277 else
2278 sv_upgrade(sv, SVt_NV);
572bbb43 2279#if defined(USE_LONG_DOUBLE)
097ee67d 2280 DEBUG_c({
f93f4e46 2281 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2282 PerlIO_printf(Perl_debug_log,
2283 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
2284 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 2285 RESTORE_NUMERIC_LOCAL();
2286 });
65202027 2287#else
572bbb43 2288 DEBUG_c({
f93f4e46 2289 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2290 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
2291 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 2292 RESTORE_NUMERIC_LOCAL();
2293 });
572bbb43 2294#endif
79072805
LW		 2295 }
2296 else if (SvTYPE(sv) < SVt_PVNV)
2297 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 2298 if (SvIOKp(sv) &&
2299 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 2300 {
65202027 2301 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
28e5dec8
JH		 2302#ifdef NV_PRESERVES_UV
2303 SvNOK_on(sv);
2304#else
2305 /* Only set the public NV OK flag if this NV preserves the IV */
2306 /* Check it's not 0xFFFFFFFFFFFFFFFF */
2307 if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv))))
2308 : (SvIVX(sv) == I_V(SvNVX(sv))))
2309 SvNOK_on(sv);
2310 else
2311 SvNOKp_on(sv);
2312#endif
93a17b20 2313 }
748a9306 2314 else if (SvPOKp(sv) && SvLEN(sv)) {
599cee73 2315 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 2316 not_a_number(sv);
097ee67d 2317 SvNVX(sv) = Atof(SvPVX(sv));
28e5dec8
JH		 2318#ifdef NV_PRESERVES_UV
2319 SvNOK_on(sv);
2320#else
2321 /* Only set the public NV OK flag if this NV preserves the value in
2322 the PV at least as well as an IV/UV would.
2323 Not sure how to do this 100% reliably. */
2324 /* if that shift count is out of range then Configure's test is
2325 wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS ==
2326 UV_BITS */
2327 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2328 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)))
2329 SvNOK_on(sv); /* Definitely small enough to preserve all bits */
2330 else if (SvNVX(sv) < (NV)IV_MIN || SvNVX(sv) > (NV)UV_MAX) {
2331 /* Definitely too large/small to fit in an integer, so no loss
2332 of precision going to integer in the future via NV */
2333 SvNOK_on(sv);
2334 } else {
2335 /* Is it something we can run through strtol etc (ie no
2336 trailing exponent part)? */
2337 int numtype = looks_like_number(sv);
2338 /* XXX probably should cache this if called above */
2339
2340 if (!(numtype &
2341 (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
2342 /* Can't use strtol etc to convert this string, so don't try */
2343 SvNOK_on(sv);
2344 } else
2345 sv_2inuv_non_preserve (sv, numtype);
2346 }
2347#endif /* NV_PRESERVES_UV */
93a17b20 2348 }
79072805 2349 else {
599cee73 2350 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 2351 report_uninit();
25da4f38
IZ		 2352 if (SvTYPE(sv) < SVt_NV)
2353 /* Typically the caller expects that sv_any is not NULL now. */
28e5dec8
JH		 2354 /* XXX Ilya implies that this is a bug in callers that assume this
2355 and ideally should be fixed. */
25da4f38 2356 sv_upgrade(sv, SVt_NV);
a0d0e21e 2357 return 0.0;
79072805 2358 }
572bbb43 2359#if defined(USE_LONG_DOUBLE)
097ee67d 2360 DEBUG_c({
f93f4e46 2361 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2362 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
2363 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 2364 RESTORE_NUMERIC_LOCAL();
2365 });
65202027 2366#else
572bbb43 2367 DEBUG_c({
f93f4e46 2368 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2369 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
2370 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 2371 RESTORE_NUMERIC_LOCAL();
2372 });
572bbb43 2373#endif
463ee0b2 2374 return SvNVX(sv);
79072805
LW		 2375}
2376
76e3520e 2377STATIC IV
cea2e8a9 2378S_asIV(pTHX_ SV *sv)
36477c24 2379{
2380 I32 numtype = looks_like_number(sv);
65202027 2381 NV d;
36477c24 2382
25da4f38 2383 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 2384 return Atol(SvPVX(sv));
d008e5eb 2385 if (!numtype) {
d008e5eb
GS		 2386 if (ckWARN(WARN_NUMERIC))
2387 not_a_number(sv);
2388 }
097ee67d 2389 d = Atof(SvPVX(sv));
25da4f38 2390 return I_V(d);
36477c24 2391}
2392
76e3520e 2393STATIC UV
cea2e8a9 2394S_asUV(pTHX_ SV *sv)
36477c24 2395{
2396 I32 numtype = looks_like_number(sv);
2397
84902520 2398#ifdef HAS_STRTOUL
25da4f38 2399 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 2400 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 2401#endif
d008e5eb 2402 if (!numtype) {
d008e5eb
GS		 2403 if (ckWARN(WARN_NUMERIC))
2404 not_a_number(sv);
2405 }
097ee67d 2406 return U_V(Atof(SvPVX(sv)));
36477c24 2407}
2408
25da4f38
IZ		 2409/*
2410 * Returns a combination of (advisory only - can get false negatives)
28e5dec8
JH		 2411 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF
2412 * IS_NUMBER_LONGER_THAN_IV_MAX, IS_NUMBER_AS_LONG_AS_IV_MAX
2413 * IS_NUMBER_NOT_INT, IS_NUMBER_NEG, IS_NUMBER_INFINITY
25da4f38
IZ		 2414 * 0 if does not look like number.
2415 *
28e5dec8
JH		 2416 * (atol and strtol stop when they hit a decimal point. strtol will return
2417 * LONG_MAX and LONG_MIN when given out of range values. ANSI says they should
2418 * do this, and vendors have had 11 years to get it right.
2419 * However, will try to make it still work with only atol
d460ef45 2420 *
28e5dec8
JH		 2421 * IS_NUMBER_TO_INT_BY_ATOL 123456789 or 123456789.3 definitely < IV_MAX
2422 * IS_NUMBER_TO_INT_BY_STRTOL 123456789 or 123456789.3 if digits = IV_MAX
2423 * IS_NUMBER_TO_INT_BY_ATOF 123456789e0 or >> IV_MAX
2424 * IS_NUMBER_LONGER_THAN_IV_MAX lots of digits, don't bother with atol
2425 * IS_NUMBER_AS_LONG_AS_IV_MAX atol might hit LONG_MAX, might not.
2426 * IS_NUMBER_NOT_INT saw "." or "e"
2427 * IS_NUMBER_NEG
300aed98 2428 * IS_NUMBER_INFINITY
25da4f38
IZ		 2429 */
2430
954c1994
GS		 2431/*
2432=for apidoc looks_like_number
2433
2434Test if an the content of an SV looks like a number (or is a
28e5dec8
JH		 2435number). C<Inf> and C<Infinity> are treated as numbers (so will not
2436issue a non-numeric warning), even if your atof() doesn't grok them.
954c1994
GS		 2437
2438=cut
2439*/
2440
36477c24 2441I32
864dbfa3 2442Perl_looks_like_number(pTHX_ SV *sv)
36477c24 2443{
2444 register char *s;
2445 register char *send;
2446 register char *sbegin;
25da4f38
IZ		 2447 register char *nbegin;
2448 I32 numtype = 0;
300aed98 2449 I32 sawinf = 0;
36477c24 2450 STRLEN len;
2451
2452 if (SvPOK(sv)) {
1c846c1f 2453 sbegin = SvPVX(sv);
36477c24 2454 len = SvCUR(sv);
2455 }
2456 else if (SvPOKp(sv))
2457 sbegin = SvPV(sv, len);
2458 else
2459 return 1;
2460 send = sbegin + len;
2461
2462 s = sbegin;
2463 while (isSPACE(*s))
2464 s++;
25da4f38
IZ		 2465 if (*s == '-') {
2466 s++;
2467 numtype = IS_NUMBER_NEG;
2468 }
2469 else if (*s == '+')
36477c24 2470 s++;
ff0cee69 2471
25da4f38
IZ		 2472 nbegin = s;
2473 /*
d460ef45 2474 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can converted to
28e5dec8
JH		 2475 * integer with atol() without overflow, IS_NUMBER_TO_INT_BY_STRTOL if
2476 * possibly slightly larger than max int, IS_NUMBER_TO_INT_BY_ATOF if you
2477 * will need (int)atof().
25da4f38
IZ		 2478 */
2479
300aed98 2480 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 2481 if (isDIGIT(*s)) {
2482 do {
2483 s++;
2484 } while (isDIGIT(*s));
25da4f38 2485
28e5dec8
JH		 2486 /* Aaargh. long long really is irritating.
2487 In the gospel according to ANSI 1989, it is an axiom that "long"
2488 is the longest integer type, and that if you don't know how long
2489 something is you can cast it to long, and nothing will be lost
2490 (except possibly speed of execution if long is slower than the
2491 type is was).
2492 Now, one can't be sure if the old rules apply, or long long
2493 (or some other newfangled thing) is actually longer than the
2494 (formerly) longest thing.
2495 */
2496 /* This lot will work for 64 bit *as long as* either
2497 either long is 64 bit
2498 or we can find both strtol/strtoq and strtoul/strtouq
2499 If not, we really should refuse to let the user use 64 bit IVs
2500 By "64 bit" I really mean IVs that don't get preserved by NVs
2501 It also should work for 128 bit IVs. Can any lend me a machine to
2502 test this?
2503 */
2504 if (s - nbegin > TYPE_DIGITS(UV)) /* Cannot cache ato[ul]() */
2505 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_LONGER_THAN_IV_MAX;
2506 else if (s - nbegin < BIT_DIGITS(((sizeof (IV)>sizeof (long))
2507 ? sizeof(long) : sizeof (IV))*8-1))
f7bbb42a 2508 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
28e5dec8
JH		 2509 else
2510 /* Can't be sure either way. (For 64 bit UV, 63 bit IV is 1 decimal
2511 digit less (IV_MAX= 9223372036854775807,
2512 UV_MAX= 18446744073709551615) so be cautious */
2513 numtype |= IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_AS_LONG_AS_IV_MAX;
25da4f38 2514
097ee67d 2515 if (*s == '.'
1c846c1f 2516#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 2517 || IS_NUMERIC_RADIX(*s)
2518#endif
2519 ) {
ff0cee69 2520 s++;
28e5dec8 2521 numtype |= IS_NUMBER_NOT_INT;
097ee67d 2522 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 2523 s++;
2524 }
36477c24 2525 }
097ee67d 2526 else if (*s == '.'
1c846c1f 2527#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 2528 || IS_NUMERIC_RADIX(*s)
2529#endif
2530 ) {
ff0cee69 2531 s++;
28e5dec8 2532 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_INT;
097ee67d 2533 /* no digits before the radix means we need digits after it */
ff0cee69 2534 if (isDIGIT(*s)) {
2535 do {
2536 s++;
2537 } while (isDIGIT(*s));
2538 }
2539 else
2540 return 0;
2541 }
300aed98
JH		 2542 else if (*s == 'I' || *s == 'i') {
2543 s++; if (*s != 'N' && *s != 'n') return 0;
2544 s++; if (*s != 'F' && *s != 'f') return 0;
2545 s++; if (*s == 'I' || *s == 'i') {
2546 s++; if (*s != 'N' && *s != 'n') return 0;
2547 s++; if (*s != 'I' && *s != 'i') return 0;
2548 s++; if (*s != 'T' && *s != 't') return 0;
2549 s++; if (*s != 'Y' && *s != 'y') return 0;
99938567 2550 s++;
300aed98
JH		 2551 }
2552 sawinf = 1;
2553 }
ff0cee69 2554 else
2555 return 0;
2556
300aed98 2557 if (sawinf)
28e5dec8
JH		 2558 numtype = (numtype & IS_NUMBER_NEG) /* Keep track of sign */
2559 | IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
300aed98
JH		 2560 else {
2561 /* we can have an optional exponent part */
2562 if (*s == 'e' || *s == 'E') {
28e5dec8
JH		 2563 numtype &= IS_NUMBER_NEG;
2564 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_INT;
36477c24 2565 s++;
300aed98
JH		 2566 if (*s == '+' || *s == '-')
2567 s++;
2568 if (isDIGIT(*s)) {
2569 do {
2570 s++;
2571 } while (isDIGIT(*s));
2572 }
2573 else
2574 return 0;
2575 }
36477c24 2576 }
2577 while (isSPACE(*s))
2578 s++;
80f3f388 2579 if (s >= send)
36477c24 2580 return numtype;
2581 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2582 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2583 return 0;
2584}
2585
79072805 2586char *
864dbfa3 2587Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2588{
2589 STRLEN n_a;
2590 return sv_2pv(sv, &n_a);
2591}
2592
25da4f38 2593/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2594static char *
25da4f38
IZ		 2595uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2596{
25da4f38
IZ		 2597 char *ptr = buf + TYPE_CHARS(UV);
2598 char *ebuf = ptr;
2599 int sign;
25da4f38
IZ		 2600
2601 if (is_uv)
2602 sign = 0;
2603 else if (iv >= 0) {
2604 uv = iv;
2605 sign = 0;
2606 } else {
2607 uv = -iv;
2608 sign = 1;
2609 }
2610 do {
2611 *--ptr = '0' + (uv % 10);
2612 } while (uv /= 10);
2613 if (sign)
2614 *--ptr = '-';
2615 *peob = ebuf;
2616 return ptr;
2617}
2618
1fa8b10d 2619char *
864dbfa3 2620Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2621{
2622 register char *s;
2623 int olderrno;
46fc3d4c 2624 SV *tsv;
25da4f38
IZ		 2625 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2626 char *tmpbuf = tbuf;
79072805 2627
463ee0b2
LW		 2628 if (!sv) {
2629 *lp = 0;
2630 return "";
2631 }
8990e307 2632 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2633 mg_get(sv);
2634 if (SvPOKp(sv)) {
2635 *lp = SvCUR(sv);
2636 return SvPVX(sv);
2637 }
cf2093f6 2638 if (SvIOKp(sv)) {
1c846c1f 2639 if (SvIsUV(sv))
57def98f 2640 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2641 else
57def98f 2642 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2643 tsv = Nullsv;
a0d0e21e 2644 goto tokensave;
463ee0b2
LW		 2645 }
2646 if (SvNOKp(sv)) {
2d4389e4 2647 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2648 tsv = Nullsv;
a0d0e21e 2649 goto tokensave;
463ee0b2 2650 }
16d20bd9 2651 if (!SvROK(sv)) {
d008e5eb 2652 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 2653 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2654 report_uninit();
c6ee37c5 2655 }
16d20bd9
AD		 2656 *lp = 0;
2657 return "";
2658 }
463ee0b2 2659 }
ed6116ce
LW		 2660 if (SvTHINKFIRST(sv)) {
2661 if (SvROK(sv)) {
a0d0e21e 2662 SV* tmpstr;
1554e226
DC		 2663 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2664 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2665 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2666 sv = (SV*)SvRV(sv);
2667 if (!sv)
2668 s = "NULLREF";
2669 else {
f9277f47
IZ		 2670 MAGIC *mg;
2671
ed6116ce 2672 switch (SvTYPE(sv)) {
f9277f47
IZ		 2673 case SVt_PVMG:
2674 if ( ((SvFLAGS(sv) &
1c846c1f 2675 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2676 == (SVs_OBJECT|SVs_RMG))
57668c4d 2677 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2678 && (mg = mg_find(sv, 'r'))) {
2cd61cdb 2679 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2680
2cd61cdb 2681 if (!mg->mg_ptr) {
8782bef2
GB		 2682 char *fptr = "msix";
2683 char reflags[6];
2684 char ch;
2685 int left = 0;
2686 int right = 4;
2687 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2688
155aba94 2689 while((ch = *fptr++)) {
8782bef2
GB		 2690 if(reganch & 1) {
2691 reflags[left++] = ch;
2692 }
2693 else {
2694 reflags[right--] = ch;
2695 }
2696 reganch >>= 1;
2697 }
2698 if(left != 4) {
2699 reflags[left] = '-';
2700 left = 5;
2701 }
2702
2703 mg->mg_len = re->prelen + 4 + left;
2704 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2705 Copy("(?", mg->mg_ptr, 2, char);
2706 Copy(reflags, mg->mg_ptr+2, left, char);
2707 Copy(":", mg->mg_ptr+left+2, 1, char);
2708 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2709 mg->mg_ptr[mg->mg_len - 1] = ')';
2710 mg->mg_ptr[mg->mg_len] = 0;
2711 }
3280af22 2712 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2713 *lp = mg->mg_len;
2714 return mg->mg_ptr;
f9277f47
IZ		 2715 }
2716 /* Fall through */
ed6116ce
LW		 2717 case SVt_NULL:
2718 case SVt_IV:
2719 case SVt_NV:
2720 case SVt_RV:
2721 case SVt_PV:
2722 case SVt_PVIV:
2723 case SVt_PVNV:
81689caa
HS		 2724 case SVt_PVBM: if (SvROK(sv))
2725 s = "REF";
2726 else
2727 s = "SCALAR"; break;
ed6116ce
LW		 2728 case SVt_PVLV: s = "LVALUE"; break;
2729 case SVt_PVAV: s = "ARRAY"; break;
2730 case SVt_PVHV: s = "HASH"; break;
2731 case SVt_PVCV: s = "CODE"; break;
2732 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2733 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2734 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2735 default: s = "UNKNOWN"; break;
2736 }
46fc3d4c 2737 tsv = NEWSV(0,0);
ed6116ce 2738 if (SvOBJECT(sv))
cea2e8a9 2739 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2740 else
46fc3d4c 2741 sv_setpv(tsv, s);
57def98f 2742 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2743 goto tokensaveref;
463ee0b2 2744 }
ed6116ce
LW		 2745 *lp = strlen(s);
2746 return s;
79072805 2747 }
0336b60e 2748 if (SvREADONLY(sv) && !SvOK(sv)) {
0336b60e 2749 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2750 report_uninit();
ed6116ce
LW		 2751 *lp = 0;
2752 return "";
79072805 2753 }
79072805 2754 }
28e5dec8
JH		 2755 if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) {
2756 /* I'm assuming that if both IV and NV are equally valid then
2757 converting the IV is going to be more efficient */
2758 U32 isIOK = SvIOK(sv);
2759 U32 isUIOK = SvIsUV(sv);
2760 char buf[TYPE_CHARS(UV)];
2761 char *ebuf, *ptr;
2762
2763 if (SvTYPE(sv) < SVt_PVIV)
2764 sv_upgrade(sv, SVt_PVIV);
2765 if (isUIOK)
2766 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2767 else
2768 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2769 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2770 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2771 SvCUR_set(sv, ebuf - ptr);
2772 s = SvEND(sv);
2773 *s = '\0';
2774 if (isIOK)
2775 SvIOK_on(sv);
2776 else
2777 SvIOKp_on(sv);
2778 if (isUIOK)
2779 SvIsUV_on(sv);
2780 }
2781 else if (SvNOKp(sv)) {
79072805
LW		 2782 if (SvTYPE(sv) < SVt_PVNV)
2783 sv_upgrade(sv, SVt_PVNV);
1c846c1f 2784 /* The +20 is pure guesswork. Configure test needed. --jhi */
59155cc0 2785 SvGROW(sv, NV_DIG + 20);
463ee0b2 2786 s = SvPVX(sv);
79072805 2787 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2788#ifdef apollo
463ee0b2 2789 if (SvNVX(sv) == 0.0)
79072805
LW		 2790 (void)strcpy(s,"0");
2791 else
2792#endif /*apollo*/
bbce6d69 2793 {
2d4389e4 2794 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2795 }
79072805 2796 errno = olderrno;
a0d0e21e
LW		 2797#ifdef FIXNEGATIVEZERO
2798 if (*s == '-' && s[1] == '0' && !s[2])
2799 strcpy(s,"0");
2800#endif
79072805
LW		 2801 while (*s) s++;
2802#ifdef hcx
2803 if (s[-1] == '.')
46fc3d4c 2804 *--s = '\0';
79072805
LW		 2805#endif
2806 }
79072805 2807 else {
0336b60e
IZ		 2808 if (ckWARN(WARN_UNINITIALIZED)
2809 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 2810 report_uninit();
a0d0e21e 2811 *lp = 0;
25da4f38
IZ		 2812 if (SvTYPE(sv) < SVt_PV)
2813 /* Typically the caller expects that sv_any is not NULL now. */
2814 sv_upgrade(sv, SVt_PV);
a0d0e21e 2815 return "";
79072805 2816 }
463ee0b2
LW		 2817 *lp = s - SvPVX(sv);
2818 SvCUR_set(sv, *lp);
79072805 2819 SvPOK_on(sv);
1d7c1841
GS		 2820 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2821 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2822 return SvPVX(sv);
a0d0e21e
LW		 2823
2824 tokensave:
2825 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2826 /* Sneaky stuff here */
2827
2828 tokensaveref:
46fc3d4c 2829 if (!tsv)
96827780 2830 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2831 sv_2mortal(tsv);
2832 *lp = SvCUR(tsv);
2833 return SvPVX(tsv);
a0d0e21e
LW		 2834 }
2835 else {
2836 STRLEN len;
46fc3d4c 2837 char *t;
2838
2839 if (tsv) {
2840 sv_2mortal(tsv);
2841 t = SvPVX(tsv);
2842 len = SvCUR(tsv);
2843 }
2844 else {
96827780
MB		 2845 t = tmpbuf;
2846 len = strlen(tmpbuf);
46fc3d4c 2847 }
a0d0e21e 2848#ifdef FIXNEGATIVEZERO
46fc3d4c 2849 if (len == 2 && t[0] == '-' && t[1] == '0') {
2850 t = "0";
2851 len = 1;
2852 }
a0d0e21e
LW		 2853#endif
2854 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2855 *lp = len;
a0d0e21e
LW		 2856 s = SvGROW(sv, len + 1);
2857 SvCUR_set(sv, len);
46fc3d4c 2858 (void)strcpy(s, t);
6bf554b4 2859 SvPOKp_on(sv);
a0d0e21e
LW		 2860 return s;
2861 }
463ee0b2
LW		 2862}
2863
7340a771
GS		 2864char *
2865Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2866{
560a288e
GS		 2867 STRLEN n_a;
2868 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2869}
2870
2871char *
2872Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2873{
2874 return sv_2pv(sv,lp);
2875}
2876
2877char *
2878Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2879{
560a288e
GS		 2880 STRLEN n_a;
2881 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2882}
2883
2884char *
2885Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2886{
560a288e 2887 sv_utf8_upgrade(sv);
7d59b7e4 2888 return SvPV(sv,*lp);
7340a771 2889}
1c846c1f 2890
463ee0b2
LW		 2891/* This function is only called on magical items */
2892bool
864dbfa3 2893Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2894{
8990e307 2895 if (SvGMAGICAL(sv))
463ee0b2
LW		 2896 mg_get(sv);
2897
a0d0e21e
LW		 2898 if (!SvOK(sv))
2899 return 0;
2900 if (SvROK(sv)) {
a0d0e21e 2901 SV* tmpsv;
1554e226
DC		 2902 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2903 (SvRV(tmpsv) != SvRV(sv)))
9e7bc3e8 2904 return SvTRUE(tmpsv);
a0d0e21e
LW		 2905 return SvRV(sv) != 0;
2906 }
463ee0b2 2907 if (SvPOKp(sv)) {
11343788
MB		 2908 register XPV* Xpvtmp;
2909 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2910 (*Xpvtmp->xpv_pv > '0' ||
2911 Xpvtmp->xpv_cur > 1 ||
2912 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2913 return 1;
2914 else
2915 return 0;
2916 }
2917 else {
2918 if (SvIOKp(sv))
2919 return SvIVX(sv) != 0;
2920 else {
2921 if (SvNOKp(sv))
2922 return SvNVX(sv) != 0.0;
2923 else
2924 return FALSE;
2925 }
2926 }
79072805
LW		 2927}
2928
c461cf8f
JH		 2929/*
2930=for apidoc sv_utf8_upgrade
2931
2932Convert the PV of an SV to its UTF8-encoded form.
2933
2934=cut
2935*/
2936
560a288e
GS		 2937void
2938Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2939{
511c2ff0
NIS		 2940 char *s, *t, *e;
2941 int hibit = 0;
560a288e 2942
0c981600 2943 if (!sv || !SvPOK(sv) || SvUTF8(sv))
560a288e
GS		 2944 return;
2945
40826f67
JH		 2946 /* This function could be much more efficient if we had a FLAG in SVs
2947 * to signal if there are any hibit chars in the PV.
511c2ff0 2948 * Given that there isn't make loop fast as possible
560a288e 2949 */
511c2ff0
NIS		 2950 s = SvPVX(sv);
2951 e = SvEND(sv);
2952 t = s;
2953 while (t < e) {
fd400ab9 2954 if ((hibit = UTF8_IS_CONTINUED(*t++)))
8a818333 2955 break;
8a818333 2956 }
560a288e 2957
40826f67 2958 if (hibit) {
8a818333
NIS		 2959 STRLEN len;
2960 if (SvREADONLY(sv) && SvFAKE(sv)) {
8a818333
NIS		 2961 sv_force_normal(sv);
2962 s = SvPVX(sv);
2963 }
2964 len = SvCUR(sv) + 1; /* Plus the \0 */
00df9076 2965 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
841d7a39 2966 SvCUR(sv) = len - 1;
511c2ff0
NIS		 2967 if (SvLEN(sv) != 0)
2968 Safefree(s); /* No longer using what was there before. */
841d7a39 2969 SvLEN(sv) = len; /* No longer know the real size. */
560a288e
GS		 2970 SvUTF8_on(sv);
2971 }
2972}
2973
c461cf8f
JH		 2974/*
2975=for apidoc sv_utf8_downgrade
2976
2977Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2978This may not be possible if the PV contains non-byte encoding characters;
2979if this is the case, either returns false or, if C<fail_ok> is not
2980true, croaks.
2981
2982=cut
2983*/
2984
560a288e
GS		 2985bool
2986Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2987{
2988 if (SvPOK(sv) && SvUTF8(sv)) {
fa301091
JH		 2989 if (SvCUR(sv)) {
2990 char *c = SvPVX(sv);
2991 STRLEN len = SvCUR(sv);
2992
2993 if (!utf8_to_bytes((U8*)c, &len)) {
2994 if (fail_ok)
2995 return FALSE;
2996 else {
2997 if (PL_op)
2998 Perl_croak(aTHX_ "Wide character in %s",
2999 PL_op_desc[PL_op->op_type]);
3000 else
3001 Perl_croak(aTHX_ "Wide character");
3002 }
4b3603a4 3003 }
fa301091 3004 SvCUR(sv) = len;
67e989fb 3005 }
9f9ab905 3006 SvUTF8_off(sv);
560a288e 3007 }
fa301091 3008
560a288e
GS		 3009 return TRUE;
3010}
3011
c461cf8f
JH		 3012/*
3013=for apidoc sv_utf8_encode
3014
3015Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
1c846c1f 3016flag so that it looks like bytes again. Nothing calls this.
c461cf8f
JH		 3017
3018=cut
3019*/
3020
560a288e
GS		 3021void
3022Perl_sv_utf8_encode(pTHX_ register SV *sv)
3023{
3024 sv_utf8_upgrade(sv);
3025 SvUTF8_off(sv);
3026}
3027
3028bool
3029Perl_sv_utf8_decode(pTHX_ register SV *sv)
3030{
3031 if (SvPOK(sv)) {
3032 char *c;
511c2ff0 3033 char *e;
560a288e
GS		 3034 bool has_utf = FALSE;
3035 if (!sv_utf8_downgrade(sv, TRUE))
3036 return FALSE;
3037
3038 /* it is actually just a matter of turning the utf8 flag on, but
3039 * we want to make sure everything inside is valid utf8 first.
3040 */
3041 c = SvPVX(sv);
00df9076 3042 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
67e989fb 3043 return FALSE;
511c2ff0
NIS		 3044 e = SvEND(sv);
3045 while (c < e) {
fd400ab9 3046 if (UTF8_IS_CONTINUED(*c++)) {
67e989fb
JH		 3047 SvUTF8_on(sv);
3048 break;
3049 }
560a288e 3050 }
560a288e
GS		 3051 }
3052 return TRUE;
3053}
3054
3055
79072805 3056/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 3057 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 3058 * as temporary.
3059 */
3060
954c1994
GS		 3061/*
3062=for apidoc sv_setsv
3063
3064Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
3065The source SV may be destroyed if it is mortal. Does not handle 'set'
3066magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
3067C<sv_setsv_mg>.
3068
3069=cut
3070*/
3071
79072805 3072void
864dbfa3 3073Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 3074{
8990e307
LW		 3075 register U32 sflags;
3076 register int dtype;
3077 register int stype;
463ee0b2 3078
79072805
LW		 3079 if (sstr == dstr)
3080 return;
2213622d 3081 SV_CHECK_THINKFIRST(dstr);
79072805 3082 if (!sstr)
3280af22 3083 sstr = &PL_sv_undef;
8990e307
LW		 3084 stype = SvTYPE(sstr);
3085 dtype = SvTYPE(dstr);
79072805 3086
a0d0e21e 3087 SvAMAGIC_off(dstr);
9e7bc3e8 3088
463ee0b2 3089 /* There's a lot of redundancy below but we're going for speed here */
79072805 3090
8990e307 3091 switch (stype) {
79072805 3092 case SVt_NULL:
aece5585 3093 undef_sstr:
20408e3c
GS		 3094 if (dtype != SVt_PVGV) {
3095 (void)SvOK_off(dstr);
3096 return;
3097 }
3098 break;
463ee0b2 3099 case SVt_IV:
aece5585
GA		 3100 if (SvIOK(sstr)) {
3101 switch (dtype) {
3102 case SVt_NULL:
8990e307 3103 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 3104 break;
3105 case SVt_NV:
8990e307 3106 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 3107 break;
3108 case SVt_RV:
3109 case SVt_PV:
a0d0e21e 3110 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 3111 break;
3112 }
3113 (void)SvIOK_only(dstr);
3114 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 3115 if (SvIsUV(sstr))
3116 SvIsUV_on(dstr);
27c9684d
AP		 3117 if (SvTAINTED(sstr))
3118 SvTAINT(dstr);
aece5585 3119 return;
8990e307 3120 }
aece5585
GA		 3121 goto undef_sstr;
3122
463ee0b2 3123 case SVt_NV:
aece5585
GA		 3124 if (SvNOK(sstr)) {
3125 switch (dtype) {
3126 case SVt_NULL:
3127 case SVt_IV:
8990e307 3128 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 3129 break;
3130 case SVt_RV:
3131 case SVt_PV:
3132 case SVt_PVIV:
a0d0e21e 3133 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 3134 break;
3135 }
3136 SvNVX(dstr) = SvNVX(sstr);
3137 (void)SvNOK_only(dstr);
27c9684d
AP		 3138 if (SvTAINTED(sstr))
3139 SvTAINT(dstr);
aece5585 3140 return;
8990e307 3141 }
aece5585
GA		 3142 goto undef_sstr;
3143
ed6116ce 3144 case SVt_RV:
8990e307 3145 if (dtype < SVt_RV)
ed6116ce 3146 sv_upgrade(dstr, SVt_RV);
c07a80fd 3147 else if (dtype == SVt_PVGV &&
3148 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
3149 sstr = SvRV(sstr);
a5f75d66 3150 if (sstr == dstr) {
1d7c1841
GS		 3151 if (GvIMPORTED(dstr) != GVf_IMPORTED
3152 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3153 {
a5f75d66 3154 GvIMPORTED_on(dstr);
1d7c1841 3155 }
a5f75d66
AD		 3156 GvMULTI_on(dstr);
3157 return;
3158 }
c07a80fd 3159 goto glob_assign;
3160 }
ed6116ce 3161 break;
463ee0b2 3162 case SVt_PV:
fc36a67e 3163 case SVt_PVFM:
8990e307 3164 if (dtype < SVt_PV)
463ee0b2 3165 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 3166 break;
3167 case SVt_PVIV:
8990e307 3168 if (dtype < SVt_PVIV)
463ee0b2 3169 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 3170 break;
3171 case SVt_PVNV:
8990e307 3172 if (dtype < SVt_PVNV)
463ee0b2 3173 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 3174 break;
4633a7c4
LW		 3175 case SVt_PVAV:
3176 case SVt_PVHV:
3177 case SVt_PVCV:
4633a7c4 3178 case SVt_PVIO:
533c011a 3179 if (PL_op)
cea2e8a9 3180 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 3181 PL_op_name[PL_op->op_type]);
4633a7c4 3182 else
cea2e8a9 3183 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 3184 break;
3185
79072805 3186 case SVt_PVGV:
8990e307 3187 if (dtype <= SVt_PVGV) {
c07a80fd 3188 glob_assign:
a5f75d66 3189 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 3190 char *name = GvNAME(sstr);
3191 STRLEN len = GvNAMELEN(sstr);
463ee0b2 3192 sv_upgrade(dstr, SVt_PVGV);
6662521e 3193 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 3194 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 3195 GvNAME(dstr) = savepvn(name, len);
3196 GvNAMELEN(dstr) = len;
3197 SvFAKE_on(dstr); /* can coerce to non-glob */
3198 }
7bac28a0 3199 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 3200 else if (PL_curstackinfo->si_type == PERLSI_SORT
3201 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 3202 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 3203 GvNAME(dstr));
a0d0e21e 3204 (void)SvOK_off(dstr);
a5f75d66 3205 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 3206 gp_free((GV*)dstr);
79072805 3207 GvGP(dstr) = gp_ref(GvGP(sstr));
27c9684d
AP		 3208 if (SvTAINTED(sstr))
3209 SvTAINT(dstr);
1d7c1841
GS		 3210 if (GvIMPORTED(dstr) != GVf_IMPORTED
3211 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3212 {
a5f75d66 3213 GvIMPORTED_on(dstr);
1d7c1841 3214 }
a5f75d66 3215 GvMULTI_on(dstr);
79072805
LW		 3216 return;
3217 }
3218 /* FALL THROUGH */
3219
3220 default:
973f89ab
CS		 3221 if (SvGMAGICAL(sstr)) {
3222 mg_get(sstr);
3223 if (SvTYPE(sstr) != stype) {
3224 stype = SvTYPE(sstr);
3225 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
3226 goto glob_assign;
3227 }
3228 }
ded42b9f 3229 if (stype == SVt_PVLV)
6fc92669 3230 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 3231 else
6fc92669 3232 (void)SvUPGRADE(dstr, stype);
79072805
LW		 3233 }
3234
8990e307
LW		 3235 sflags = SvFLAGS(sstr);
3236
3237 if (sflags & SVf_ROK) {
3238 if (dtype >= SVt_PV) {
3239 if (dtype == SVt_PVGV) {
3240 SV *sref = SvREFCNT_inc(SvRV(sstr));
3241 SV *dref = 0;
a5f75d66 3242 int intro = GvINTRO(dstr);
a0d0e21e
LW		 3243
3244 if (intro) {
3245 GP *gp;
1d7c1841 3246 gp_free((GV*)dstr);
a5f75d66 3247 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 3248 Newz(602,gp, 1, GP);
44a8e56a 3249 GvGP(dstr) = gp_ref(gp);
a0d0e21e 3250 GvSV(dstr) = NEWSV(72,0);
1d7c1841 3251 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 3252 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 3253 }
a5f75d66 3254 GvMULTI_on(dstr);
8990e307
LW		 3255 switch (SvTYPE(sref)) {
3256 case SVt_PVAV:
a0d0e21e
LW		 3257 if (intro)
3258 SAVESPTR(GvAV(dstr));
3259 else
3260 dref = (SV*)GvAV(dstr);
8990e307 3261 GvAV(dstr) = (AV*)sref;
39bac7f7 3262 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 3263 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3264 {
a5f75d66 3265 GvIMPORTED_AV_on(dstr);
1d7c1841 3266 }
8990e307
LW		 3267 break;
3268 case SVt_PVHV:
a0d0e21e
LW		 3269 if (intro)
3270 SAVESPTR(GvHV(dstr));
3271 else
3272 dref = (SV*)GvHV(dstr);
8990e307 3273 GvHV(dstr) = (HV*)sref;
39bac7f7 3274 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 3275 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3276 {
a5f75d66 3277 GvIMPORTED_HV_on(dstr);
1d7c1841 3278 }
8990e307
LW		 3279 break;
3280 case SVt_PVCV:
8ebc5c01 3281 if (intro) {
3282 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
3283 SvREFCNT_dec(GvCV(dstr));
3284 GvCV(dstr) = Nullcv;
68dc0745 3285 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 3286 PL_sub_generation++;
8ebc5c01 3287 }
a0d0e21e 3288 SAVESPTR(GvCV(dstr));
8ebc5c01 3289 }
68dc0745 3290 else
3291 dref = (SV*)GvCV(dstr);
3292 if (GvCV(dstr) != (CV*)sref) {
748a9306 3293 CV* cv = GvCV(dstr);
4633a7c4 3294 if (cv) {
68dc0745 3295 if (!GvCVGEN((GV*)dstr) &&
3296 (CvROOT(cv) || CvXSUB(cv)))
3297 {
beab0874 3298 SV *const_sv;
7bac28a0 3299 /* ahem, death to those who redefine
3300 * active sort subs */
3280af22
NIS		 3301 if (PL_curstackinfo->si_type == PERLSI_SORT &&
3302 PL_sortcop == CvSTART(cv))
1c846c1f 3303 Perl_croak(aTHX_
7bac28a0 3304 "Can't redefine active sort subroutine %s",
3305 GvENAME((GV*)dstr));
beab0874
JT		 3306 /* Redefining a sub - warning is mandatory if
3307 it was a const and its value changed. */
3308 if (ckWARN(WARN_REDEFINE)
3309 || (CvCONST(cv)
3310 && (!CvCONST((CV*)sref)
3311 || sv_cmp(cv_const_sv(cv),
3312 cv_const_sv((CV*)sref)))))
3313 {
3314 Perl_warner(aTHX_ WARN_REDEFINE,
3315 CvCONST(cv)
3316 ? "Constant subroutine %s redefined"
47deb5e7 3317 : "Subroutine %s redefined",
beab0874
JT		 3318 GvENAME((GV*)dstr));
3319 }
9607fc9c 3320 }
3fe9a6f1 3321 cv_ckproto(cv, (GV*)dstr,
3322 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 3323 }
a5f75d66 3324 GvCV(dstr) = (CV*)sref;
7a4c00b4 3325 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 3326 GvASSUMECV_on(dstr);
3280af22 3327 PL_sub_generation++;
a5f75d66 3328 }
39bac7f7 3329 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 3330 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3331 {
a5f75d66 3332 GvIMPORTED_CV_on(dstr);
1d7c1841 3333 }
8990e307 3334 break;
91bba347
LW		 3335 case SVt_PVIO:
3336 if (intro)
3337 SAVESPTR(GvIOp(dstr));
3338 else
3339 dref = (SV*)GvIOp(dstr);
3340 GvIOp(dstr) = (IO*)sref;
3341 break;
f4d13ee9
JH		 3342 case SVt_PVFM:
3343 if (intro)
3344 SAVESPTR(GvFORM(dstr));
3345 else
3346 dref = (SV*)GvFORM(dstr);
3347 GvFORM(dstr) = (CV*)sref;
3348 break;
8990e307 3349 default:
a0d0e21e
LW		 3350 if (intro)
3351 SAVESPTR(GvSV(dstr));
3352 else
3353 dref = (SV*)GvSV(dstr);
8990e307 3354 GvSV(dstr) = sref;
39bac7f7 3355 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 3356 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3357 {
a5f75d66 3358 GvIMPORTED_SV_on(dstr);
1d7c1841 3359 }
8990e307
LW		 3360 break;
3361 }
3362 if (dref)
3363 SvREFCNT_dec(dref);
a0d0e21e
LW		 3364 if (intro)
3365 SAVEFREESV(sref);
27c9684d
AP		 3366 if (SvTAINTED(sstr))
3367 SvTAINT(dstr);
8990e307
LW		 3368 return;
3369 }
a0d0e21e 3370 if (SvPVX(dstr)) {
760ac839 3371 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 3372 if (SvLEN(dstr))
3373 Safefree(SvPVX(dstr));
a0d0e21e
LW		 3374 SvLEN(dstr)=SvCUR(dstr)=0;
3375 }
8990e307 3376 }
a0d0e21e 3377 (void)SvOK_off(dstr);
8990e307 3378 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 3379 SvROK_on(dstr);
8990e307 3380 if (sflags & SVp_NOK) {
3332b3c1
JH		 3381 SvNOKp_on(dstr);
3382 /* Only set the public OK flag if the source has public OK. */
3383 if (sflags & SVf_NOK)
3384 SvFLAGS(dstr) |= SVf_NOK;
ed6116ce
LW		 3385 SvNVX(dstr) = SvNVX(sstr);
3386 }
8990e307 3387 if (sflags & SVp_IOK) {
3332b3c1
JH		 3388 (void)SvIOKp_on(dstr);
3389 if (sflags & SVf_IOK)
3390 SvFLAGS(dstr) |= SVf_IOK;
2b1c7e3e 3391 if (sflags & SVf_IVisUV)
25da4f38 3392 SvIsUV_on(dstr);
3332b3c1 3393 SvIVX(dstr) = SvIVX(sstr);
ed6116ce 3394 }
a0d0e21e
LW		 3395 if (SvAMAGIC(sstr)) {
3396 SvAMAGIC_on(dstr);
3397 }
ed6116ce 3398 }
8990e307 3399 else if (sflags & SVp_POK) {
79072805
LW		 3400
3401 /*
3402 * Check to see if we can just swipe the string. If so, it's a
3403 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 3404 * It might even be a win on short strings if SvPVX(dstr)
3405 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 3406 */
3407
ff68c719 3408 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 3409 SvREFCNT(sstr) == 1 && /* and no other references to it? */
1c846c1f 3410 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
4c8f17b9
BH		 3411 SvLEN(sstr) && /* and really is a string */
3412 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
a5f75d66 3413 {
adbc6bb1 3414 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 3415 if (SvOOK(dstr)) {
3416 SvFLAGS(dstr) &= ~SVf_OOK;
3417 Safefree(SvPVX(dstr) - SvIVX(dstr));
3418 }
50483b2c 3419 else if (SvLEN(dstr))
a5f75d66 3420 Safefree(SvPVX(dstr));
79072805 3421 }
a5f75d66 3422 (void)SvPOK_only(dstr);
463ee0b2 3423 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 3424 SvLEN_set(dstr, SvLEN(sstr));
3425 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 3426
79072805 3427 SvTEMP_off(dstr);
2b1c7e3e 3428 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 3429 SvPV_set(sstr, Nullch);
3430 SvLEN_set(sstr, 0);
a5f75d66
AD		 3431 SvCUR_set(sstr, 0);
3432 SvTEMP_off(sstr);
79072805
LW		 3433 }
3434 else { /* have to copy actual string */
8990e307
LW		 3435 STRLEN len = SvCUR(sstr);
3436
3437 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
3438 Move(SvPVX(sstr),SvPVX(dstr),len,char);
3439 SvCUR_set(dstr, len);
3440 *SvEND(dstr) = '\0';
a0d0e21e 3441 (void)SvPOK_only(dstr);
79072805 3442 }
9aa983d2 3443 if (sflags & SVf_UTF8)
a7cb1f99 3444 SvUTF8_on(dstr);
79072805 3445 /*SUPPRESS 560*/
8990e307 3446 if (sflags & SVp_NOK) {
3332b3c1
JH		 3447 SvNOKp_on(dstr);
3448 if (sflags & SVf_NOK)
3449 SvFLAGS(dstr) |= SVf_NOK;
463ee0b2 3450 SvNVX(dstr) = SvNVX(sstr);
79072805 3451 }
8990e307 3452 if (sflags & SVp_IOK) {
3332b3c1
JH		 3453 (void)SvIOKp_on(dstr);
3454 if (sflags & SVf_IOK)
3455 SvFLAGS(dstr) |= SVf_IOK;
2b1c7e3e 3456 if (sflags & SVf_IVisUV)
25da4f38 3457 SvIsUV_on(dstr);
463ee0b2 3458 SvIVX(dstr) = SvIVX(sstr);
79072805
LW		 3459 }
3460 }
8990e307 3461 else if (sflags & SVp_IOK) {
3332b3c1
JH		 3462 if (sflags & SVf_IOK)
3463 (void)SvIOK_only(dstr);
3464 else {
3465 SvOK_off(dstr);
3466 SvIOKp_on(dstr);
3467 }
3468 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 3469 if (sflags & SVf_IVisUV)
25da4f38 3470 SvIsUV_on(dstr);
3332b3c1
JH		 3471 SvIVX(dstr) = SvIVX(sstr);
3472 if (sflags & SVp_NOK) {
3473 if (sflags & SVf_NOK)
3474 (void)SvNOK_on(dstr);
3475 else
3476 (void)SvNOKp_on(dstr);
3477 SvNVX(dstr) = SvNVX(sstr);
3478 }
3479 }
3480 else if (sflags & SVp_NOK) {
3481 if (sflags & SVf_NOK)
3482 (void)SvNOK_only(dstr);
3483 else {
3484 SvOK_off(dstr);
3485 SvNOKp_on(dstr);
3486 }
3487 SvNVX(dstr) = SvNVX(sstr);
79072805
LW		 3488 }
3489 else {
20408e3c 3490 if (dtype == SVt_PVGV) {
e476b1b5
GS		 3491 if (ckWARN(WARN_MISC))
3492 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 3493 }
3494 else
3495 (void)SvOK_off(dstr);
a0d0e21e 3496 }
27c9684d
AP		 3497 if (SvTAINTED(sstr))
3498 SvTAINT(dstr);
79072805
LW		 3499}
3500
954c1994
GS		 3501/*
3502=for apidoc sv_setsv_mg
3503
3504Like C<sv_setsv>, but also handles 'set' magic.
3505
3506=cut
3507*/
3508
79072805 3509void
864dbfa3 3510Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3511{
3512 sv_setsv(dstr,sstr);
3513 SvSETMAGIC(dstr);
3514}
3515
954c1994
GS		 3516/*
3517=for apidoc sv_setpvn
3518
3519Copies a string into an SV. The C<len> parameter indicates the number of
3520bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
3521
3522=cut
3523*/
3524
ef50df4b 3525void
864dbfa3 3526Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3527{
c6f8c383 3528 register char *dptr;
793db0cb
JH		 3529 {
3530 /* len is STRLEN which is unsigned, need to copy to signed */
3531 IV iv = len;
3532 assert(iv >= 0);
3533 }
2213622d 3534 SV_CHECK_THINKFIRST(sv);
463ee0b2 3535 if (!ptr) {
a0d0e21e 3536 (void)SvOK_off(sv);
463ee0b2
LW		 3537 return;
3538 }
6fc92669 3539 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3540
79072805 3541 SvGROW(sv, len + 1);
c6f8c383
GA		 3542 dptr = SvPVX(sv);
3543 Move(ptr,dptr,len,char);
3544 dptr[len] = '\0';
79072805 3545 SvCUR_set(sv, len);
1aa99e6b 3546 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3547 SvTAINT(sv);
79072805
LW		 3548}
3549
954c1994
GS		 3550/*
3551=for apidoc sv_setpvn_mg
3552
3553Like C<sv_setpvn>, but also handles 'set' magic.
3554
3555=cut
3556*/
3557
79072805 3558void
864dbfa3 3559Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3560{
3561 sv_setpvn(sv,ptr,len);
3562 SvSETMAGIC(sv);
3563}
3564
954c1994
GS		 3565/*
3566=for apidoc sv_setpv
3567
3568Copies a string into an SV. The string must be null-terminated. Does not
3569handle 'set' magic. See C<sv_setpv_mg>.
3570
3571=cut
3572*/
3573
ef50df4b 3574void
864dbfa3 3575Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3576{
3577 register STRLEN len;
3578
2213622d 3579 SV_CHECK_THINKFIRST(sv);
463ee0b2 3580 if (!ptr) {
a0d0e21e 3581 (void)SvOK_off(sv);
463ee0b2
LW		 3582 return;
3583 }
79072805 3584 len = strlen(ptr);
6fc92669 3585 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3586
79072805 3587 SvGROW(sv, len + 1);
463ee0b2 3588 Move(ptr,SvPVX(sv),len+1,char);
79072805 3589 SvCUR_set(sv, len);
1aa99e6b 3590 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2
LW		 3591 SvTAINT(sv);
3592}
3593
954c1994
GS		 3594/*
3595=for apidoc sv_setpv_mg
3596
3597Like C<sv_setpv>, but also handles 'set' magic.
3598
3599=cut
3600*/
3601
463ee0b2 3602void
864dbfa3 3603Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3604{
3605 sv_setpv(sv,ptr);
3606 SvSETMAGIC(sv);
3607}
3608
954c1994
GS		 3609/*
3610=for apidoc sv_usepvn
3611
3612Tells an SV to use C<ptr> to find its string value. Normally the string is
1c846c1f 3613stored inside the SV but sv_usepvn allows the SV to use an outside string.
954c1994
GS		 3614The C<ptr> should point to memory that was allocated by C<malloc>. The
3615string length, C<len>, must be supplied. This function will realloc the
3616memory pointed to by C<ptr>, so that pointer should not be freed or used by
3617the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3618See C<sv_usepvn_mg>.
3619
3620=cut
3621*/
3622
ef50df4b 3623void
864dbfa3 3624Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3625{
2213622d 3626 SV_CHECK_THINKFIRST(sv);
c6f8c383 3627 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3628 if (!ptr) {
a0d0e21e 3629 (void)SvOK_off(sv);
463ee0b2
LW		 3630 return;
3631 }
a0ed51b3 3632 (void)SvOOK_off(sv);
50483b2c 3633 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3634 Safefree(SvPVX(sv));
3635 Renew(ptr, len+1, char);
3636 SvPVX(sv) = ptr;
3637 SvCUR_set(sv, len);
3638 SvLEN_set(sv, len+1);
3639 *SvEND(sv) = '\0';
1aa99e6b 3640 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3641 SvTAINT(sv);
79072805
LW		 3642}
3643
954c1994
GS		 3644/*
3645=for apidoc sv_usepvn_mg
3646
3647Like C<sv_usepvn>, but also handles 'set' magic.
3648
3649=cut
3650*/
3651
ef50df4b 3652void
864dbfa3 3653Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3654{
51c1089b 3655 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3656 SvSETMAGIC(sv);
3657}
3658
6fc92669 3659void
840a7b70 3660Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
0f15f207 3661{
2213622d 3662 if (SvREADONLY(sv)) {
1c846c1f
NIS		 3663 if (SvFAKE(sv)) {
3664 char *pvx = SvPVX(sv);
3665 STRLEN len = SvCUR(sv);
3666 U32 hash = SvUVX(sv);
3667 SvGROW(sv, len + 1);
3668 Move(pvx,SvPVX(sv),len,char);
3669 *SvEND(sv) = '\0';
3670 SvFAKE_off(sv);
3671 SvREADONLY_off(sv);
c3654f1a 3672 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
1c846c1f
NIS		 3673 }
3674 else if (PL_curcop != &PL_compiling)
cea2e8a9 3675 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3676 }
2213622d 3677 if (SvROK(sv))
840a7b70 3678 sv_unref_flags(sv, flags);
6fc92669
GS		 3679 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3680 sv_unglob(sv);
0f15f207 3681}
1c846c1f 3682
840a7b70
IZ		 3683void
3684Perl_sv_force_normal(pTHX_ register SV *sv)
3685{
3686 sv_force_normal_flags(sv, 0);
3687}
3688
954c1994
GS		 3689/*
3690=for apidoc sv_chop
3691
1c846c1f 3692Efficient removal of characters from the beginning of the string buffer.
954c1994
GS		 3693SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3694the string buffer. The C<ptr> becomes the first character of the adjusted
3695string.
3696
3697=cut
3698*/
3699
79072805 3700void
864dbfa3 3701Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
1c846c1f
NIS		 3702
3703
79072805
LW		 3704{
3705 register STRLEN delta;
3706
a0d0e21e 3707 if (!ptr || !SvPOKp(sv))
79072805 3708 return;
2213622d 3709 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3710 if (SvTYPE(sv) < SVt_PVIV)
3711 sv_upgrade(sv,SVt_PVIV);
3712
3713 if (!SvOOK(sv)) {
50483b2c
JD		 3714 if (!SvLEN(sv)) { /* make copy of shared string */
3715 char *pvx = SvPVX(sv);
3716 STRLEN len = SvCUR(sv);
3717 SvGROW(sv, len + 1);
3718 Move(pvx,SvPVX(sv),len,char);
3719 *SvEND(sv) = '\0';
3720 }
463ee0b2 3721 SvIVX(sv) = 0;
79072805
LW		 3722 SvFLAGS(sv) |= SVf_OOK;
3723 }
25da4f38 3724 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3725 delta = ptr - SvPVX(sv);
79072805
LW		 3726 SvLEN(sv) -= delta;
3727 SvCUR(sv) -= delta;
463ee0b2
LW		 3728 SvPVX(sv) += delta;
3729 SvIVX(sv) += delta;
79072805
LW		 3730}
3731
954c1994
GS		 3732/*
3733=for apidoc sv_catpvn
3734
3735Concatenates the string onto the end of the string which is in the SV. The
3736C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3737'set' magic. See C<sv_catpvn_mg>.
3738
3739=cut
3740*/
3741
79072805 3742void
864dbfa3 3743Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3744{
463ee0b2 3745 STRLEN tlen;
748a9306 3746 char *junk;
a0d0e21e 3747
748a9306 3748 junk = SvPV_force(sv, tlen);
463ee0b2 3749 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3750 if (ptr == junk)
3751 ptr = SvPVX(sv);
463ee0b2 3752 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3753 SvCUR(sv) += len;
3754 *SvEND(sv) = '\0';
d41ff1b8 3755 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3756 SvTAINT(sv);
79072805
LW		 3757}
3758
954c1994
GS		 3759/*
3760=for apidoc sv_catpvn_mg
3761
3762Like C<sv_catpvn>, but also handles 'set' magic.
3763
3764=cut
3765*/
3766
79072805 3767void
864dbfa3 3768Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3769{
3770 sv_catpvn(sv,ptr,len);
3771 SvSETMAGIC(sv);
3772}
3773
954c1994
GS		 3774/*
3775=for apidoc sv_catsv
3776
13e8c8e3
JH		 3777Concatenates the string from SV C<ssv> onto the end of the string in
3778SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
3779not 'set' magic. See C<sv_catsv_mg>.
954c1994 3780
13e8c8e3 3781=cut */
954c1994 3782
ef50df4b 3783void
46199a12 3784Perl_sv_catsv(pTHX_ SV *dsv, register SV *ssv)
79072805 3785{
13e8c8e3
JH		 3786 char *spv;
3787 STRLEN slen;
46199a12 3788 if (!ssv)
79072805 3789 return;
46199a12
JH		 3790 if ((spv = SvPV(ssv, slen))) {
3791 bool dutf8 = DO_UTF8(dsv);
3792 bool sutf8 = DO_UTF8(ssv);
13e8c8e3
JH		 3793
3794 if (dutf8 == sutf8)
46199a12 3795 sv_catpvn(dsv,spv,slen);
13e8c8e3
JH		 3796 else {
3797 if (dutf8) {
46199a12
JH		 3798 /* Not modifying source SV, so taking a temporary copy. */
3799 SV* csv = sv_2mortal(newSVsv(ssv));
13e8c8e3
JH		 3800 char *cpv;
3801 STRLEN clen;
3802
46199a12
JH		 3803 sv_utf8_upgrade(csv);
3804 cpv = SvPV(csv,clen);
3805 sv_catpvn(dsv,cpv,clen);
13e8c8e3
JH		 3806 }
3807 else {
46199a12
JH		 3808 sv_utf8_upgrade(dsv);
3809 sv_catpvn(dsv,spv,slen);
3810 SvUTF8_on(dsv); /* If dsv has no wide characters. */
13e8c8e3 3811 }
e84ff256 3812 }
560a288e 3813 }
79072805
LW		 3814}
3815
954c1994
GS		 3816/*
3817=for apidoc sv_catsv_mg
3818
3819Like C<sv_catsv>, but also handles 'set' magic.
3820
3821=cut
3822*/
3823
79072805 3824void
46199a12 3825Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv)
ef50df4b 3826{
46199a12
JH		 3827 sv_catsv(dsv,ssv);
3828 SvSETMAGIC(dsv);
ef50df4b
GS		 3829}
3830
954c1994
GS		 3831/*
3832=for apidoc sv_catpv
3833
3834Concatenates the string onto the end of the string which is in the SV.
3835Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3836
3837=cut
3838*/
3839
ef50df4b 3840void
0c981600 3841Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3842{
3843 register STRLEN len;
463ee0b2 3844 STRLEN tlen;
748a9306 3845 char *junk;
79072805 3846
0c981600 3847 if (!ptr)
79072805 3848 return;
748a9306 3849 junk = SvPV_force(sv, tlen);
0c981600 3850 len = strlen(ptr);
463ee0b2 3851 SvGROW(sv, tlen + len + 1);
0c981600
JH		 3852 if (ptr == junk)
3853 ptr = SvPVX(sv);
3854 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3855 SvCUR(sv) += len;
d41ff1b8 3856 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3857 SvTAINT(sv);
79072805
LW		 3858}
3859
954c1994
GS		 3860/*
3861=for apidoc sv_catpv_mg
3862
3863Like C<sv_catpv>, but also handles 'set' magic.
3864
3865=cut
3866*/
3867
ef50df4b 3868void
0c981600 3869Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3870{
0c981600 3871 sv_catpv(sv,ptr);
ef50df4b
GS		 3872 SvSETMAGIC(sv);
3873}
3874
79072805 3875SV *
864dbfa3 3876Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3877{
3878 register SV *sv;
1c846c1f 3879
4561caa4 3880 new_SV(sv);
79072805
LW		 3881 if (len) {
3882 sv_upgrade(sv, SVt_PV);
3883 SvGROW(sv, len + 1);
3884 }
3885 return sv;
3886}
3887
1edc1566 3888/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3889
954c1994
GS		 3890/*
3891=for apidoc sv_magic
3892
3893Adds magic to an SV.
3894
3895=cut
3896*/
3897
79072805 3898void
864dbfa3 3899Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3900{
3901 MAGIC* mg;
1c846c1f 3902
0f15f207 3903 if (SvREADONLY(sv)) {
3280af22 3904 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3905 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3906 }
4633a7c4 3907 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3908 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3909 if (how == 't')
565764a8 3910 mg->mg_len |= 1;
463ee0b2 3911 return;
748a9306 3912 }
463ee0b2
LW		 3913 }
3914 else {
c6f8c383 3915 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3916 }
79072805
LW		 3917 Newz(702,mg, 1, MAGIC);
3918 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3919
79072805 3920 SvMAGIC(sv) = mg;
c277df42 3921 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3922 mg->mg_obj = obj;
85e6fe83 3923 else {
8990e307 3924 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3925 mg->mg_flags |= MGf_REFCOUNTED;
3926 }
79072805 3927 mg->mg_type = how;
565764a8 3928 mg->mg_len = namlen;
1edc1566 3929 if (name)
3930 if (namlen >= 0)
3931 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3932 else if (namlen == HEf_SVKEY)
1edc1566 3933 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
1c846c1f 3934
79072805
LW		 3935 switch (how) {
3936 case 0:
22c35a8c 3937 mg->mg_virtual = &PL_vtbl_sv;
79072805 3938 break;
a0d0e21e 3939 case 'A':
22c35a8c 3940 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3941 break;
3942 case 'a':
22c35a8c 3943 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3944 break;
3945 case 'c':
d460ef45 3946 mg->mg_virtual = &PL_vtbl_ovrld;
a0d0e21e 3947 break;
79072805 3948 case 'B':
22c35a8c 3949 mg->mg_virtual = &PL_vtbl_bm;
79072805 3950 break;
6cef1e77 3951 case 'D':
22c35a8c 3952 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3953 break;
3954 case 'd':
22c35a8c 3955 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3956 break;
79072805 3957 case 'E':
22c35a8c 3958 mg->mg_virtual = &PL_vtbl_env;
79072805 3959 break;
55497cff 3960 case 'f':
22c35a8c 3961 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3962 break;
79072805 3963 case 'e':
22c35a8c 3964 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3965 break;
93a17b20 3966 case 'g':
22c35a8c 3967 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3968 break;
463ee0b2 3969 case 'I':
22c35a8c 3970 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3971 break;
3972 case 'i':
22c35a8c 3973 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3974 break;
16660edb 3975 case 'k':
22c35a8c 3976 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3977 break;
79072805 3978 case 'L':
a0d0e21e 3979 SvRMAGICAL_on(sv);
93a17b20
LW		 3980 mg->mg_virtual = 0;
3981 break;
3982 case 'l':
22c35a8c 3983 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3984 break;
f93b4edd
MB		 3985#ifdef USE_THREADS
3986 case 'm':
22c35a8c 3987 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3988 break;
3989#endif /* USE_THREADS */
36477c24 3990#ifdef USE_LOCALE_COLLATE
bbce6d69 3991 case 'o':
22c35a8c 3992 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3993 break;
36477c24 3994#endif /* USE_LOCALE_COLLATE */
463ee0b2 3995 case 'P':
22c35a8c 3996 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3997 break;
3998 case 'p':
a0d0e21e 3999 case 'q':
22c35a8c 4000 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 4001 break;
c277df42 4002 case 'r':
22c35a8c 4003 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 4004 break;
79072805 4005 case 'S':
22c35a8c 4006 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 4007 break;
4008 case 's':
22c35a8c 4009 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 4010 break;
463ee0b2 4011 case 't':
22c35a8c 4012 mg->mg_virtual = &PL_vtbl_taint;
565764a8 4013 mg->mg_len = 1;
463ee0b2 4014 break;
79072805 4015 case 'U':
22c35a8c 4016 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 4017 break;
4018 case 'v':
22c35a8c 4019 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 4020 break;
4021 case 'x':
22c35a8c 4022 mg->mg_virtual = &PL_vtbl_substr;
79072805 4023 break;
5f05dabc 4024 case 'y':
22c35a8c 4025 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 4026 break;
79072805 4027 case '*':
22c35a8c 4028 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 4029 break;
4030 case '#':
22c35a8c 4031 mg->mg_virtual = &PL_vtbl_arylen;
79072805 4032 break;
a0d0e21e 4033 case '.':
22c35a8c 4034 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 4035 break;
810b8aa5
GS		 4036 case '<':
4037 mg->mg_virtual = &PL_vtbl_backref;
4038 break;
4633a7c4
LW		 4039 case '~': /* Reserved for use by extensions not perl internals. */
4040 /* Useful for attaching extension internal data to perl vars. */
4041 /* Note that multiple extensions may clash if magical scalars */
4042 /* etc holding private data from one are passed to another. */
4043 SvRMAGICAL_on(sv);
a0d0e21e 4044 break;
79072805 4045 default:
cea2e8a9 4046 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 4047 }
8990e307
LW		 4048 mg_magical(sv);
4049 if (SvGMAGICAL(sv))
4050 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 4051}
4052
c461cf8f
JH		 4053/*
4054=for apidoc sv_unmagic
4055
4056Removes magic from an SV.
4057
4058=cut
4059*/
4060
463ee0b2 4061int
864dbfa3 4062Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 4063{
4064 MAGIC* mg;
4065 MAGIC** mgp;
91bba347 4066 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 4067 return 0;
4068 mgp = &SvMAGIC(sv);
4069 for (mg = *mgp; mg; mg = *mgp) {
4070 if (mg->mg_type == type) {
4071 MGVTBL* vtbl = mg->mg_virtual;
4072 *mgp = mg->mg_moremagic;
1d7c1841 4073 if (vtbl && vtbl->svt_free)
fc0dc3b3 4074 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 4075 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 4076 if (mg->mg_len >= 0)
1edc1566 4077 Safefree(mg->mg_ptr);
565764a8 4078 else if (mg->mg_len == HEf_SVKEY)
1edc1566 4079 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 4080 if (mg->mg_flags & MGf_REFCOUNTED)
4081 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 4082 Safefree(mg);
4083 }
4084 else
4085 mgp = &mg->mg_moremagic;
79072805 4086 }
91bba347 4087 if (!SvMAGIC(sv)) {
463ee0b2 4088 SvMAGICAL_off(sv);
8990e307 4089 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 4090 }
4091
4092 return 0;
79072805
LW		 4093}
4094
c461cf8f
JH		 4095/*
4096=for apidoc sv_rvweaken
4097
4098Weaken a reference.
4099
4100=cut
4101*/
4102
810b8aa5 4103SV *
864dbfa3 4104Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 4105{
4106 SV *tsv;
4107 if (!SvOK(sv)) /* let undefs pass */
4108 return sv;
4109 if (!SvROK(sv))
cea2e8a9 4110 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5 4111 else if (SvWEAKREF(sv)) {
810b8aa5 4112 if (ckWARN(WARN_MISC))
cea2e8a9 4113 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 4114 return sv;
4115 }
4116 tsv = SvRV(sv);
4117 sv_add_backref(tsv, sv);
4118 SvWEAKREF_on(sv);
1c846c1f 4119 SvREFCNT_dec(tsv);
810b8aa5
GS		 4120 return sv;
4121}
4122
4123STATIC void
cea2e8a9 4124S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 4125{
4126 AV *av;
4127 MAGIC *mg;
4128 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
4129 av = (AV*)mg->mg_obj;
4130 else {
4131 av = newAV();
4132 sv_magic(tsv, (SV*)av, '<', NULL, 0);
4133 SvREFCNT_dec(av); /* for sv_magic */
4134 }
4135 av_push(av,sv);
4136}
4137
1c846c1f 4138STATIC void
cea2e8a9 4139S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 4140{
4141 AV *av;
4142 SV **svp;
4143 I32 i;
4144 SV *tsv = SvRV(sv);
4145 MAGIC *mg;
4146 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 4147 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 4148 av = (AV *)mg->mg_obj;
4149 svp = AvARRAY(av);
4150 i = AvFILLp(av);
4151 while (i >= 0) {
4152 if (svp[i] == sv) {
4153 svp[i] = &PL_sv_undef; /* XXX */
4154 }
4155 i--;
4156 }
4157}
4158
954c1994
GS		 4159/*
4160=for apidoc sv_insert
4161
4162Inserts a string at the specified offset/length within the SV. Similar to
4163the Perl substr() function.
4164
4165=cut
4166*/
4167
79072805 4168void
864dbfa3 4169Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 4170{
4171 register char *big;
4172 register char *mid;
4173 register char *midend;
4174 register char *bigend;
4175 register I32 i;
6ff81951 4176 STRLEN curlen;
1c846c1f 4177
79072805 4178
8990e307 4179 if (!bigstr)
cea2e8a9 4180 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 4181 SvPV_force(bigstr, curlen);
60fa28ff 4182 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 4183 if (offset + len > curlen) {
4184 SvGROW(bigstr, offset+len+1);
4185 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
4186 SvCUR_set(bigstr, offset+len);
4187 }
79072805 4188
69b47968 4189 SvTAINT(bigstr);
79072805
LW		 4190 i = littlelen - len;
4191 if (i > 0) { /* string might grow */
a0d0e21e 4192 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 4193 mid = big + offset + len;
4194 midend = bigend = big + SvCUR(bigstr);
4195 bigend += i;
4196 *bigend = '\0';
4197 while (midend > mid) /* shove everything down */
4198 *--bigend = *--midend;
4199 Move(little,big+offset,littlelen,char);
4200 SvCUR(bigstr) += i;
4201 SvSETMAGIC(bigstr);
4202 return;
4203 }
4204 else if (i == 0) {
463ee0b2 4205 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 4206 SvSETMAGIC(bigstr);
4207 return;
4208 }
4209
463ee0b2 4210 big = SvPVX(bigstr);
79072805
LW		 4211 mid = big + offset;
4212 midend = mid + len;
4213 bigend = big + SvCUR(bigstr);
4214
4215 if (midend > bigend)
cea2e8a9 4216 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 4217
4218 if (mid - big > bigend - midend) { /* faster to shorten from end */
4219 if (littlelen) {
4220 Move(little, mid, littlelen,char);
4221 mid += littlelen;
4222 }
4223 i = bigend - midend;
4224 if (i > 0) {
4225 Move(midend, mid, i,char);
4226 mid += i;
4227 }
4228 *mid = '\0';
4229 SvCUR_set(bigstr, mid - big);
4230 }
4231 /*SUPPRESS 560*/
155aba94 4232 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 4233 midend -= littlelen;
4234 mid = midend;
4235 sv_chop(bigstr,midend-i);
4236 big += i;
4237 while (i--)
4238 *--midend = *--big;
4239 if (littlelen)
4240 Move(little, mid, littlelen,char);
4241 }
4242 else if (littlelen) {
4243 midend -= littlelen;
4244 sv_chop(bigstr,midend);
4245 Move(little,midend,littlelen,char);
4246 }
4247 else {
4248 sv_chop(bigstr,midend);
4249 }
4250 SvSETMAGIC(bigstr);
4251}
4252
c461cf8f
JH		 4253/*
4254=for apidoc sv_replace
4255
4256Make the first argument a copy of the second, then delete the original.
4257
4258=cut
4259*/
79072805
LW		 4260
4261void
864dbfa3 4262Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805
LW		 4263{
4264 U32 refcnt = SvREFCNT(sv);
2213622d 4265 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 4266 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
4267 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 4268 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 4269 if (SvMAGICAL(nsv))
4270 mg_free(nsv);
4271 else
4272 sv_upgrade(nsv, SVt_PVMG);
93a17b20 4273 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 4274 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 4275 SvMAGICAL_off(sv);
4276 SvMAGIC(sv) = 0;
4277 }
79072805
LW		 4278 SvREFCNT(sv) = 0;
4279 sv_clear(sv);
477f5d66 4280 assert(!SvREFCNT(sv));
79072805
LW		 4281 StructCopy(nsv,sv,SV);
4282 SvREFCNT(sv) = refcnt;
1edc1566 4283 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 4284 del_SV(nsv);
79072805
LW		 4285}
4286
c461cf8f
JH		 4287/*
4288=for apidoc sv_clear
4289
4290Clear an SV, making it empty. Does not free the memory used by the SV
4291itself.
4292
4293=cut
4294*/
4295
79072805 4296void
864dbfa3 4297Perl_sv_clear(pTHX_ register SV *sv)
79072805 4298{
ec12f114 4299 HV* stash;
79072805
LW		 4300 assert(sv);
4301 assert(SvREFCNT(sv) == 0);
4302
ed6116ce 4303 if (SvOBJECT(sv)) {
3280af22 4304 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 4305 djSP;
32251b26 4306 CV* destructor;
837485b6 4307 SV tmpref;
a0d0e21e 4308
837485b6
GS		 4309 Zero(&tmpref, 1, SV);
4310 sv_upgrade(&tmpref, SVt_RV);
4311 SvROK_on(&tmpref);
4312 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
4313 SvREFCNT(&tmpref) = 1;
8ebc5c01 4314
d460ef45 4315 do {
4e8e7886 4316 stash = SvSTASH(sv);
32251b26 4317 destructor = StashHANDLER(stash,DESTROY);
4e8e7886
GS		 4318 if (destructor) {
4319 ENTER;
e788e7d3 4320 PUSHSTACKi(PERLSI_DESTROY);
837485b6 4321 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 4322 EXTEND(SP, 2);
4323 PUSHMARK(SP);
837485b6 4324 PUSHs(&tmpref);
4e8e7886 4325 PUTBACK;
32251b26 4326 call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 4327 SvREFCNT(sv)--;
d3acc0f7 4328 POPSTACK;
3095d977 4329 SPAGAIN;
4e8e7886
GS		 4330 LEAVE;
4331 }
4332 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 4333
837485b6 4334 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 4335
4336 if (SvREFCNT(sv)) {
4337 if (PL_in_clean_objs)
cea2e8a9 4338 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 4339 HvNAME(stash));
4340 /* DESTROY gave object new lease on life */
4341 return;
4342 }
a0d0e21e 4343 }
4e8e7886 4344
a0d0e21e 4345 if (SvOBJECT(sv)) {
4e8e7886 4346 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 4347 SvOBJECT_off(sv); /* Curse the object. */
4348 if (SvTYPE(sv) != SVt_PVIO)
3280af22 4349 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 4350 }
463ee0b2 4351 }
c07a80fd 4352 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 4353 mg_free(sv);
ec12f114 4354 stash = NULL;
79072805 4355 switch (SvTYPE(sv)) {
8990e307 4356 case SVt_PVIO:
df0bd2f4
GS		 4357 if (IoIFP(sv) &&
4358 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 4359 IoIFP(sv) != PerlIO_stdout() &&
4360 IoIFP(sv) != PerlIO_stderr())
93578b34 4361 {
f2b5be74 4362 io_close((IO*)sv, FALSE);
93578b34 4363 }
1d7c1841 4364 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 4365 PerlDir_close(IoDIRP(sv));
1d7c1841 4366 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 4367 Safefree(IoTOP_NAME(sv));
4368 Safefree(IoFMT_NAME(sv));
4369 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 4370 /* FALL THROUGH */
79072805 4371 case SVt_PVBM:
a0d0e21e 4372 goto freescalar;
79072805 4373 case SVt_PVCV:
748a9306 4374 case SVt_PVFM:
85e6fe83 4375 cv_undef((CV*)sv);
a0d0e21e 4376 goto freescalar;
79072805 4377 case SVt_PVHV:
85e6fe83 4378 hv_undef((HV*)sv);
a0d0e21e 4379 break;
79072805 4380 case SVt_PVAV:
85e6fe83 4381 av_undef((AV*)sv);
a0d0e21e 4382 break;
02270b4e
GS		 4383 case SVt_PVLV:
4384 SvREFCNT_dec(LvTARG(sv));
4385 goto freescalar;
a0d0e21e 4386 case SVt_PVGV:
1edc1566 4387 gp_free((GV*)sv);
a0d0e21e 4388 Safefree(GvNAME(sv));
ec12f114
JPC		 4389 /* cannot decrease stash refcount yet, as we might recursively delete
4390 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
4391 of stash until current sv is completely gone.
4392 -- JohnPC, 27 Mar 1998 */
4393 stash = GvSTASH(sv);
a0d0e21e 4394 /* FALL THROUGH */
79072805 4395 case SVt_PVMG:
79072805
LW		 4396 case SVt_PVNV:
4397 case SVt_PVIV:
a0d0e21e
LW		 4398 freescalar:
4399 (void)SvOOK_off(sv);
79072805
LW		 4400 /* FALL THROUGH */
4401 case SVt_PV:
a0d0e21e 4402 case SVt_RV:
810b8aa5
GS		 4403 if (SvROK(sv)) {
4404 if (SvWEAKREF(sv))
4405 sv_del_backref(sv);
4406 else
4407 SvREFCNT_dec(SvRV(sv));
4408 }
1edc1566 4409 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 4410 Safefree(SvPVX(sv));
1c846c1f 4411 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
c3654f1a 4412 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
1c846c1f
NIS		 4413 SvFAKE_off(sv);
4414 }
79072805 4415 break;
a0d0e21e 4416/*
79072805 4417 case SVt_NV:
79072805 4418 case SVt_IV:
79072805
LW		 4419 case SVt_NULL:
4420 break;
a0d0e21e 4421*/
79072805
LW		 4422 }
4423
4424 switch (SvTYPE(sv)) {
4425 case SVt_NULL:
4426 break;
79072805
LW		 4427 case SVt_IV:
4428 del_XIV(SvANY(sv));
4429 break;
4430 case SVt_NV:
4431 del_XNV(SvANY(sv));
4432 break;
ed6116ce
LW		 4433 case SVt_RV:
4434 del_XRV(SvANY(sv));
4435 break;
79072805
LW		 4436 case SVt_PV:
4437 del_XPV(SvANY(sv));
4438 break;
4439 case SVt_PVIV:
4440 del_XPVIV(SvANY(sv));
4441 break;
4442 case SVt_PVNV:
4443 del_XPVNV(SvANY(sv));
4444 break;
4445 case SVt_PVMG:
4446 del_XPVMG(SvANY(sv));
4447 break;
4448 case SVt_PVLV:
4449 del_XPVLV(SvANY(sv));
4450 break;
4451 case SVt_PVAV:
4452 del_XPVAV(SvANY(sv));
4453 break;
4454 case SVt_PVHV:
4455 del_XPVHV(SvANY(sv));
4456 break;
4457 case SVt_PVCV:
4458 del_XPVCV(SvANY(sv));
4459 break;
4460 case SVt_PVGV:
4461 del_XPVGV(SvANY(sv));
ec12f114
JPC		 4462 /* code duplication for increased performance. */
4463 SvFLAGS(sv) &= SVf_BREAK;
4464 SvFLAGS(sv) |= SVTYPEMASK;
4465 /* decrease refcount of the stash that owns this GV, if any */
4466 if (stash)
4467 SvREFCNT_dec(stash);
4468 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 4469 case SVt_PVBM:
4470 del_XPVBM(SvANY(sv));
4471 break;
4472 case SVt_PVFM:
4473 del_XPVFM(SvANY(sv));
4474 break;
8990e307
LW		 4475 case SVt_PVIO:
4476 del_XPVIO(SvANY(sv));
4477 break;
79072805 4478 }
a0d0e21e 4479 SvFLAGS(sv) &= SVf_BREAK;
8990e307 4480 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 4481}
4482
4483SV *
864dbfa3 4484Perl_sv_newref(pTHX_ SV *sv)
79072805 4485{
463ee0b2 4486 if (sv)
dce16143 4487 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 4488 return sv;
4489}
4490
c461cf8f
JH		 4491/*
4492=for apidoc sv_free
4493
4494Free the memory used by an SV.
4495
4496=cut
4497*/
4498
79072805 4499void
864dbfa3 4500Perl_sv_free(pTHX_ SV *sv)
79072805 4501{
dce16143
MB		 4502 int refcount_is_zero;
4503
79072805
LW		 4504 if (!sv)
4505 return;
a0d0e21e
LW		 4506 if (SvREFCNT(sv) == 0) {
4507 if (SvFLAGS(sv) & SVf_BREAK)
4508 return;
3280af22 4509 if (PL_in_clean_all) /* All is fair */
1edc1566 4510 return;
d689ffdd
JP		 4511 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4512 /* make sure SvREFCNT(sv)==0 happens very seldom */
4513 SvREFCNT(sv) = (~(U32)0)/2;
4514 return;
4515 }
0453d815
PM		 4516 if (ckWARN_d(WARN_INTERNAL))
4517 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 4518 return;
4519 }
dce16143
MB		 4520 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
4521 if (!refcount_is_zero)
8990e307 4522 return;
463ee0b2
LW		 4523#ifdef DEBUGGING
4524 if (SvTEMP(sv)) {
0453d815 4525 if (ckWARN_d(WARN_DEBUGGING))
f248d071 4526 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 4527 "Attempt to free temp prematurely: SV 0x%"UVxf,
4528 PTR2UV(sv));
79072805 4529 return;
79072805 4530 }
463ee0b2 4531#endif
d689ffdd
JP		 4532 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4533 /* make sure SvREFCNT(sv)==0 happens very seldom */
4534 SvREFCNT(sv) = (~(U32)0)/2;
4535 return;
4536 }
79072805 4537 sv_clear(sv);
477f5d66
CS		 4538 if (! SvREFCNT(sv))
4539 del_SV(sv);
79072805
LW		 4540}
4541
954c1994
GS		 4542/*
4543=for apidoc sv_len
4544
4545Returns the length of the string in the SV. See also C<SvCUR>.
4546
4547=cut
4548*/
4549
79072805 4550STRLEN
864dbfa3 4551Perl_sv_len(pTHX_ register SV *sv)
79072805 4552{
748a9306 4553 char *junk;
463ee0b2 4554 STRLEN len;
79072805
LW		 4555
4556 if (!sv)
4557 return 0;
4558
8990e307 4559 if (SvGMAGICAL(sv))
565764a8 4560 len = mg_length(sv);
8990e307 4561 else
748a9306 4562 junk = SvPV(sv, len);
463ee0b2 4563 return len;
79072805
LW		 4564}
4565
c461cf8f
JH		 4566/*
4567=for apidoc sv_len_utf8
4568
4569Returns the number of characters in the string in an SV, counting wide
4570UTF8 bytes as a single character.
4571
4572=cut
4573*/
4574
a0ed51b3 4575STRLEN
864dbfa3 4576Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 4577{
a0ed51b3
LW		 4578 if (!sv)
4579 return 0;
4580
a0ed51b3 4581 if (SvGMAGICAL(sv))
b76347f2 4582 return mg_length(sv);
a0ed51b3 4583 else
b76347f2
JH		 4584 {
4585 STRLEN len;
4586 U8 *s = (U8*)SvPV(sv, len);
4587
d6efbbad 4588 return Perl_utf8_length(aTHX_ s, s + len);
a0ed51b3 4589 }
a0ed51b3
LW		 4590}
4591
4592void
864dbfa3 4593Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4594{
dfe13c55
GS		 4595 U8 *start;
4596 U8 *s;
4597 U8 *send;
a0ed51b3
LW		 4598 I32 uoffset = *offsetp;
4599 STRLEN len;
4600
4601 if (!sv)
4602 return;
4603
dfe13c55 4604 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4605 send = s + len;
4606 while (s < send && uoffset--)
4607 s += UTF8SKIP(s);
bb40f870
GA		 4608 if (s >= send)
4609 s = send;
a0ed51b3
LW		 4610 *offsetp = s - start;
4611 if (lenp) {
4612 I32 ulen = *lenp;
4613 start = s;
4614 while (s < send && ulen--)
4615 s += UTF8SKIP(s);
bb40f870
GA		 4616 if (s >= send)
4617 s = send;
a0ed51b3
LW		 4618 *lenp = s - start;
4619 }
4620 return;
4621}
4622
4623void
864dbfa3 4624Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4625{
dfe13c55
GS		 4626 U8 *s;
4627 U8 *send;
a0ed51b3
LW		 4628 STRLEN len;
4629
4630 if (!sv)
4631 return;
4632
dfe13c55 4633 s = (U8*)SvPV(sv, len);
a0ed51b3 4634 if (len < *offsetp)
a0dbb045 4635 Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset");
a0ed51b3
LW		 4636 send = s + *offsetp;
4637 len = 0;
4638 while (s < send) {
a0dbb045
JH		 4639 STRLEN n;
4640
4641 if (utf8_to_uv(s, UTF8SKIP(s), &n, 0)) {
4642 s += n;
4643 len++;
4644 }
4645 else
4646 break;
a0ed51b3
LW		 4647 }
4648 *offsetp = len;
4649 return;
4650}
4651
954c1994
GS		 4652/*
4653=for apidoc sv_eq
4654
4655Returns a boolean indicating whether the strings in the two SVs are
4656identical.
4657
4658=cut
4659*/
4660
79072805 4661I32
e01b9e88 4662Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4663{
4664 char *pv1;
463ee0b2 4665 STRLEN cur1;
79072805 4666 char *pv2;
463ee0b2 4667 STRLEN cur2;
e01b9e88
SC		 4668 I32 eq = 0;
4669 bool pv1tmp = FALSE;
4670 bool pv2tmp = FALSE;
79072805 4671
e01b9e88 4672 if (!sv1) {
79072805
LW		 4673 pv1 = "";
4674 cur1 = 0;
4675 }
463ee0b2 4676 else
e01b9e88 4677 pv1 = SvPV(sv1, cur1);
79072805 4678
e01b9e88
SC		 4679 if (!sv2){
4680 pv2 = "";
4681 cur2 = 0;
92d29cee 4682 }
e01b9e88
SC		 4683 else
4684 pv2 = SvPV(sv2, cur2);
79072805 4685
e01b9e88 4686 /* do not utf8ize the comparands as a side-effect */
7bbb0251 4687 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
1aa99e6b
IH		 4688 if (PL_hints & HINT_UTF8_DISTINCT)
4689 return FALSE;
4690
e01b9e88 4691 if (SvUTF8(sv1)) {
1aa99e6b 4692 (void)utf8_to_bytes((U8*)(pv1 = savepvn(pv1, cur1)), &cur1);
a9df0fa1
CB		 4693 {
4694 IV scur1 = cur1;
4695 if (scur1 < 0) {
4696 Safefree(pv1);
4697 return 0;
4698 }
1aa99e6b
IH		 4699 }
4700 pv1tmp = TRUE;
e01b9e88
SC		 4701 }
4702 else {
1aa99e6b 4703 (void)utf8_to_bytes((U8*)(pv2 = savepvn(pv2, cur2)), &cur2);
a9df0fa1
CB		 4704 {
4705 IV scur2 = cur2;
4706 if (scur2 < 0) {
4707 Safefree(pv2);
4708 return 0;
4709 }
1aa99e6b
IH		 4710 }
4711 pv2tmp = TRUE;
e01b9e88
SC		 4712 }
4713 }
79072805 4714
e01b9e88
SC		 4715 if (cur1 == cur2)
4716 eq = memEQ(pv1, pv2, cur1);
4717
4718 if (pv1tmp)
4719 Safefree(pv1);
4720 if (pv2tmp)
4721 Safefree(pv2);
4722
4723 return eq;
79072805
LW		 4724}
4725
954c1994
GS		 4726/*
4727=for apidoc sv_cmp
4728
4729Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4730string in C<sv1> is less than, equal to, or greater than the string in
4731C<sv2>.
4732
4733=cut
4734*/
4735
79072805 4736I32
e01b9e88 4737Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4738{
560a288e
GS		 4739 STRLEN cur1, cur2;
4740 char *pv1, *pv2;
1c846c1f 4741 I32 cmp;
e01b9e88
SC		 4742 bool pv1tmp = FALSE;
4743 bool pv2tmp = FALSE;
560a288e 4744
e01b9e88
SC		 4745 if (!sv1) {
4746 pv1 = "";
560a288e
GS		 4747 cur1 = 0;
4748 }
e01b9e88
SC		 4749 else
4750 pv1 = SvPV(sv1, cur1);
560a288e 4751
e01b9e88
SC		 4752 if (!sv2){
4753 pv2 = "";
560a288e
GS		 4754 cur2 = 0;
4755 }
e01b9e88
SC		 4756 else
4757 pv2 = SvPV(sv2, cur2);
79072805 4758
e01b9e88
SC		 4759 /* do not utf8ize the comparands as a side-effect */
4760 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
1aa99e6b
IH		 4761 if (PL_hints & HINT_UTF8_DISTINCT)
4762 return SvUTF8(sv1) ? 1 : -1;
4763
e01b9e88
SC		 4764 if (SvUTF8(sv1)) {
4765 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4766 pv2tmp = TRUE;
4767 }
4768 else {
4769 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4770 pv1tmp = TRUE;
4771 }
4772 }
79072805 4773
e01b9e88
SC		 4774 if (!cur1) {
4775 cmp = cur2 ? -1 : 0;
4776 } else if (!cur2) {
4777 cmp = 1;
4778 } else {
4779 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4780
4781 if (retval) {
4782 cmp = retval < 0 ? -1 : 1;
4783 } else if (cur1 == cur2) {
4784 cmp = 0;
4785 } else {
4786 cmp = cur1 < cur2 ? -1 : 1;
4787 }
4788 }
16660edb 4789
e01b9e88
SC		 4790 if (pv1tmp)
4791 Safefree(pv1);
4792 if (pv2tmp)
4793 Safefree(pv2);
16660edb 4794
e01b9e88 4795 return cmp;
bbce6d69 4796}
16660edb 4797
c461cf8f
JH		 4798/*
4799=for apidoc sv_cmp_locale
4800
4801Compares the strings in two SVs in a locale-aware manner. See
4802L</sv_cmp_locale>
4803
4804=cut
4805*/
4806
bbce6d69 4807I32
864dbfa3 4808Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4809{
36477c24 4810#ifdef USE_LOCALE_COLLATE
16660edb 4811
bbce6d69 4812 char *pv1, *pv2;
4813 STRLEN len1, len2;
4814 I32 retval;
16660edb 4815
3280af22 4816 if (PL_collation_standard)
bbce6d69 4817 goto raw_compare;
16660edb 4818
bbce6d69 4819 len1 = 0;
8ac85365 4820 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4821 len2 = 0;
8ac85365 4822 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4823
bbce6d69 4824 if (!pv1 || !len1) {
4825 if (pv2 && len2)
4826 return -1;
4827 else
4828 goto raw_compare;
4829 }
4830 else {
4831 if (!pv2 || !len2)
4832 return 1;
4833 }
16660edb 4834
bbce6d69 4835 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4836
bbce6d69 4837 if (retval)
16660edb 4838 return retval < 0 ? -1 : 1;
4839
bbce6d69 4840 /*
4841 * When the result of collation is equality, that doesn't mean
4842 * that there are no differences -- some locales exclude some
4843 * characters from consideration. So to avoid false equalities,
4844 * we use the raw string as a tiebreaker.
4845 */
16660edb 4846
bbce6d69 4847 raw_compare:
4848 /* FALL THROUGH */
16660edb 4849
36477c24 4850#endif /* USE_LOCALE_COLLATE */
16660edb 4851
bbce6d69 4852 return sv_cmp(sv1, sv2);
4853}
79072805 4854
36477c24 4855#ifdef USE_LOCALE_COLLATE
7a4c00b4 4856/*
4857 * Any scalar variable may carry an 'o' magic that contains the
4858 * scalar data of the variable transformed to such a format that
4859 * a normal memory comparison can be used to compare the data
4860 * according to the locale settings.
4861 */
bbce6d69 4862char *
864dbfa3 4863Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4864{
7a4c00b4 4865 MAGIC *mg;
16660edb 4866
8ac85365 4867 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4868 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4869 char *s, *xf;
4870 STRLEN len, xlen;
4871
7a4c00b4 4872 if (mg)
4873 Safefree(mg->mg_ptr);
bbce6d69 4874 s = SvPV(sv, len);
4875 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4876 if (SvREADONLY(sv)) {
4877 SAVEFREEPV(xf);
4878 *nxp = xlen;
3280af22 4879 return xf + sizeof(PL_collation_ix);
ff0cee69 4880 }
7a4c00b4 4881 if (! mg) {
4882 sv_magic(sv, 0, 'o', 0, 0);
4883 mg = mg_find(sv, 'o');
4884 assert(mg);
bbce6d69 4885 }
7a4c00b4 4886 mg->mg_ptr = xf;
565764a8 4887 mg->mg_len = xlen;
7a4c00b4 4888 }
4889 else {
ff0cee69 4890 if (mg) {
4891 mg->mg_ptr = NULL;
565764a8 4892 mg->mg_len = -1;
ff0cee69 4893 }
bbce6d69 4894 }
4895 }
7a4c00b4 4896 if (mg && mg->mg_ptr) {
565764a8 4897 *nxp = mg->mg_len;
3280af22 4898 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4899 }
4900 else {
4901 *nxp = 0;
4902 return NULL;
16660edb 4903 }
79072805
LW		 4904}
4905
36477c24 4906#endif /* USE_LOCALE_COLLATE */
bbce6d69 4907
c461cf8f
JH		 4908/*
4909=for apidoc sv_gets
4910
4911Get a line from the filehandle and store it into the SV, optionally
4912appending to the currently-stored string.
4913
4914=cut
4915*/
4916
79072805 4917char *
864dbfa3 4918Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4919{
c07a80fd 4920 char *rsptr;
4921 STRLEN rslen;
4922 register STDCHAR rslast;
4923 register STDCHAR *bp;
4924 register I32 cnt;
4925 I32 i;
4926
2213622d 4927 SV_CHECK_THINKFIRST(sv);
6fc92669 4928 (void)SvUPGRADE(sv, SVt_PV);
99491443 4929
ff68c719 4930 SvSCREAM_off(sv);
c07a80fd 4931
3280af22 4932 if (RsSNARF(PL_rs)) {
c07a80fd 4933 rsptr = NULL;
4934 rslen = 0;
4935 }
3280af22 4936 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4937 I32 recsize, bytesread;
4938 char *buffer;
4939
4940 /* Grab the size of the record we're getting */
3280af22 4941 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4942 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4943 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4944 /* Go yank in */
4945#ifdef VMS
4946 /* VMS wants read instead of fread, because fread doesn't respect */
4947 /* RMS record boundaries. This is not necessarily a good thing to be */
4948 /* doing, but we've got no other real choice */
4949 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4950#else
4951 bytesread = PerlIO_read(fp, buffer, recsize);
4952#endif
4953 SvCUR_set(sv, bytesread);
e670df4e 4954 buffer[bytesread] = '\0';
7d59b7e4
NIS		 4955 if (PerlIO_isutf8(fp))
4956 SvUTF8_on(sv);
4957 else
4958 SvUTF8_off(sv);
5b2b9c68
HM		 4959 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4960 }
3280af22 4961 else if (RsPARA(PL_rs)) {
c07a80fd 4962 rsptr = "\n\n";
4963 rslen = 2;
4964 }
7d59b7e4
NIS		 4965 else {
4966 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4967 if (PerlIO_isutf8(fp)) {
4968 rsptr = SvPVutf8(PL_rs, rslen);
4969 }
4970 else {
4971 if (SvUTF8(PL_rs)) {
4972 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4973 Perl_croak(aTHX_ "Wide character in $/");
4974 }
4975 }
4976 rsptr = SvPV(PL_rs, rslen);
4977 }
4978 }
4979
c07a80fd 4980 rslast = rslen ? rsptr[rslen - 1] : '\0';
4981
3280af22 4982 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4983 do { /* to make sure file boundaries work right */
760ac839 4984 if (PerlIO_eof(fp))
a0d0e21e 4985 return 0;
760ac839 4986 i = PerlIO_getc(fp);
79072805 4987 if (i != '\n') {
a0d0e21e
LW		 4988 if (i == -1)
4989 return 0;
760ac839 4990 PerlIO_ungetc(fp,i);
79072805
LW		 4991 break;
4992 }
4993 } while (i != EOF);
4994 }
c07a80fd 4995
760ac839
LW		 4996 /* See if we know enough about I/O mechanism to cheat it ! */
4997
4998 /* This used to be #ifdef test - it is made run-time test for ease
1c846c1f 4999 of abstracting out stdio interface. One call should be cheap
760ac839
LW		 5000 enough here - and may even be a macro allowing compile
5001 time optimization.
5002 */
5003
5004 if (PerlIO_fast_gets(fp)) {
5005
5006 /*
5007 * We're going to steal some values from the stdio struct
5008 * and put EVERYTHING in the innermost loop into registers.
5009 */
5010 register STDCHAR *ptr;
5011 STRLEN bpx;
5012 I32 shortbuffered;
5013
16660edb 5014#if defined(VMS) && defined(PERLIO_IS_STDIO)
5015 /* An ungetc()d char is handled separately from the regular
5016 * buffer, so we getc() it back out and stuff it in the buffer.
5017 */
5018 i = PerlIO_getc(fp);
5019 if (i == EOF) return 0;
5020 *(--((*fp)->_ptr)) = (unsigned char) i;
5021 (*fp)->_cnt++;
5022#endif
c07a80fd 5023
c2960299 5024 /* Here is some breathtakingly efficient cheating */
c07a80fd 5025
a20bf0c3 5026 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 5027 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 5028 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
5029 if (cnt > 80 && SvLEN(sv) > append) {
5030 shortbuffered = cnt - SvLEN(sv) + append + 1;
5031 cnt -= shortbuffered;
5032 }
5033 else {
5034 shortbuffered = 0;
bbce6d69 5035 /* remember that cnt can be negative */
5036 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 5037 }
5038 }
5039 else
5040 shortbuffered = 0;
c07a80fd 5041 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 5042 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 5043 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5044 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 5045 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5046 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5047 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5048 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 5049 for (;;) {
5050 screamer:
93a17b20 5051 if (cnt > 0) {
c07a80fd 5052 if (rslen) {
760ac839
LW		 5053 while (cnt > 0) { /* this | eat */
5054 cnt--;
c07a80fd 5055 if ((*bp++ = *ptr++) == rslast) /* really | dust */
5056 goto thats_all_folks; /* screams | sed :-) */
5057 }
5058 }
5059 else {
1c846c1f
NIS		 5060 Copy(ptr, bp, cnt, char); /* this | eat */
5061 bp += cnt; /* screams | dust */
c07a80fd 5062 ptr += cnt; /* louder | sed :-) */
a5f75d66 5063 cnt = 0;
93a17b20 5064 }
79072805
LW		 5065 }
5066
748a9306 5067 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 5068 cnt = shortbuffered;
5069 shortbuffered = 0;
c07a80fd 5070 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 5071 SvCUR_set(sv, bpx);
5072 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 5073 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 5074 continue;
5075 }
5076
16660edb 5077 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 5078 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
5079 PTR2UV(ptr),(long)cnt));
a20bf0c3 5080 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 5081 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5082 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5083 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5084 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
1c846c1f 5085 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 5086 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
5087 another abstraction. */
760ac839 5088 i = PerlIO_getc(fp); /* get more characters */
16660edb 5089 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5090 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5091 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5092 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 5093 cnt = PerlIO_get_cnt(fp);
5094 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 5095 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5096 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 5097
748a9306
LW		 5098 if (i == EOF) /* all done for ever? */
5099 goto thats_really_all_folks;
5100
c07a80fd 5101 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 5102 SvCUR_set(sv, bpx);
5103 SvGROW(sv, bpx + cnt + 2);
c07a80fd 5104 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5105
760ac839 5106 *bp++ = i; /* store character from PerlIO_getc */
79072805 5107
c07a80fd 5108 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 5109 goto thats_all_folks;
79072805
LW		 5110 }
5111
5112thats_all_folks:
c07a80fd 5113 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 5114 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 5115 goto screamer; /* go back to the fray */
79072805
LW		 5116thats_really_all_folks:
5117 if (shortbuffered)
5118 cnt += shortbuffered;
16660edb 5119 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5120 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 5121 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 5122 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5123 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5124 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5125 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 5126 *bp = '\0';
760ac839 5127 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 5128 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 5129 "Screamer: done, len=%ld, string=|%.*s|\n",
5130 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 5131 }
5132 else
79072805 5133 {
4d2c4e07 5134#ifndef EPOC
760ac839 5135 /*The big, slow, and stupid way */
c07a80fd 5136 STDCHAR buf[8192];
4d2c4e07
OF		 5137#else
5138 /* Need to work around EPOC SDK features */
5139 /* On WINS: MS VC5 generates calls to _chkstk, */
5140 /* if a `large' stack frame is allocated */
5141 /* gcc on MARM does not generate calls like these */
5142 STDCHAR buf[1024];
5143#endif
79072805 5144
760ac839 5145screamer2:
c07a80fd 5146 if (rslen) {
760ac839
LW		 5147 register STDCHAR *bpe = buf + sizeof(buf);
5148 bp = buf;
5149 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
5150 ; /* keep reading */
5151 cnt = bp - buf;
c07a80fd 5152 }
5153 else {
760ac839 5154 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 5155 /* Accomodate broken VAXC compiler, which applies U8 cast to
5156 * both args of ?: operator, causing EOF to change into 255
5157 */
5158 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 5159 }
79072805
LW		 5160
5161 if (append)
760ac839 5162 sv_catpvn(sv, (char *) buf, cnt);
79072805 5163 else
760ac839 5164 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 5165
5166 if (i != EOF && /* joy */
5167 (!rslen ||
5168 SvCUR(sv) < rslen ||
36477c24 5169 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 5170 {
5171 append = -1;
63e4d877
CS		 5172 /*
5173 * If we're reading from a TTY and we get a short read,
5174 * indicating that the user hit his EOF character, we need
5175 * to notice it now, because if we try to read from the TTY
5176 * again, the EOF condition will disappear.
5177 *
5178 * The comparison of cnt to sizeof(buf) is an optimization
5179 * that prevents unnecessary calls to feof().
5180 *
5181 * - jik 9/25/96
5182 */
5183 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
5184 goto screamer2;
79072805
LW		 5185 }
5186 }
5187
1c846c1f 5188 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 5189 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 5190 i = PerlIO_getc(fp);
79072805 5191 if (i != '\n') {
760ac839 5192 PerlIO_ungetc(fp,i);
79072805
LW		 5193 break;
5194 }
5195 }
5196 }
c07a80fd 5197
7d59b7e4
NIS		 5198 if (PerlIO_isutf8(fp))
5199 SvUTF8_on(sv);
5200 else
5201 SvUTF8_off(sv);
5202
c07a80fd 5203 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 5204}
5205
760ac839 5206
954c1994
GS		 5207/*
5208=for apidoc sv_inc
5209
5210Auto-increment of the value in the SV.
5211
5212=cut
5213*/
5214
79072805 5215void
864dbfa3 5216Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 5217{
5218 register char *d;
463ee0b2 5219 int flags;
79072805
LW		 5220
5221 if (!sv)
5222 return;
b23a5f78
GB		 5223 if (SvGMAGICAL(sv))
5224 mg_get(sv);
ed6116ce 5225 if (SvTHINKFIRST(sv)) {
0f15f207 5226 if (SvREADONLY(sv)) {
3280af22 5227 if (PL_curcop != &PL_compiling)
cea2e8a9 5228 Perl_croak(aTHX_ PL_no_modify);
0f15f207 5229 }
a0d0e21e 5230 if (SvROK(sv)) {
b5be31e9 5231 IV i;
9e7bc3e8
JD		 5232 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
5233 return;
56431972 5234 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 5235 sv_unref(sv);
5236 sv_setiv(sv, i);
a0d0e21e 5237 }
ed6116ce 5238 }
8990e307 5239 flags = SvFLAGS(sv);
28e5dec8
JH		 5240 if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) {
5241 /* It's (privately or publicly) a float, but not tested as an
5242 integer, so test it to see. */
d460ef45 5243 (void) SvIV(sv);
28e5dec8
JH		 5244 flags = SvFLAGS(sv);
5245 }
5246 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5247 /* It's publicly an integer, or privately an integer-not-float */
5248 oops_its_int:
25da4f38
IZ		 5249 if (SvIsUV(sv)) {
5250 if (SvUVX(sv) == UV_MAX)
65202027 5251 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 5252 else
5253 (void)SvIOK_only_UV(sv);
5254 ++SvUVX(sv);
5255 } else {
5256 if (SvIVX(sv) == IV_MAX)
28e5dec8 5257 sv_setuv(sv, (UV)IV_MAX + 1);
25da4f38
IZ		 5258 else {
5259 (void)SvIOK_only(sv);
5260 ++SvIVX(sv);
1c846c1f 5261 }
55497cff 5262 }
79072805
LW		 5263 return;
5264 }
28e5dec8
JH		 5265 if (flags & SVp_NOK) {
5266 (void)SvNOK_only(sv);
5267 SvNVX(sv) += 1.0;
5268 return;
5269 }
5270
8990e307 5271 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
28e5dec8
JH		 5272 if ((flags & SVTYPEMASK) < SVt_PVIV)
5273 sv_upgrade(sv, SVt_IV);
5274 (void)SvIOK_only(sv);
5275 SvIVX(sv) = 1;
79072805
LW		 5276 return;
5277 }
463ee0b2 5278 d = SvPVX(sv);
79072805
LW		 5279 while (isALPHA(*d)) d++;
5280 while (isDIGIT(*d)) d++;
5281 if (*d) {
28e5dec8
JH		 5282#ifdef PERL_PRESERVE_IVUV
5283 /* Got to punt this an an integer if needs be, but we don't issue
5284 warnings. Probably ought to make the sv_iv_please() that does
5285 the conversion if possible, and silently. */
5286 I32 numtype = looks_like_number(sv);
5287 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5288 /* Need to try really hard to see if it's an integer.
5289 9.22337203685478e+18 is an integer.
5290 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5291 so $a="9.22337203685478e+18"; $a+0; $a++
5292 needs to be the same as $a="9.22337203685478e+18"; $a++
5293 or we go insane. */
d460ef45 5294
28e5dec8
JH		 5295 (void) sv_2iv(sv);
5296 if (SvIOK(sv))
5297 goto oops_its_int;
5298
5299 /* sv_2iv *should* have made this an NV */
5300 if (flags & SVp_NOK) {
5301 (void)SvNOK_only(sv);
5302 SvNVX(sv) += 1.0;
5303 return;
5304 }
5305 /* I don't think we can get here. Maybe I should assert this
5306 And if we do get here I suspect that sv_setnv will croak. NWC
5307 Fall through. */
5308#if defined(USE_LONG_DOUBLE)
5309 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5310 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5311#else
5312 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5313 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5314#endif
5315 }
5316#endif /* PERL_PRESERVE_IVUV */
5317 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0);
79072805
LW		 5318 return;
5319 }
5320 d--;
463ee0b2 5321 while (d >= SvPVX(sv)) {
79072805
LW		 5322 if (isDIGIT(*d)) {
5323 if (++*d <= '9')
5324 return;
5325 *(d--) = '0';
5326 }
5327 else {
9d116dd7
JH		 5328#ifdef EBCDIC
5329 /* MKS: The original code here died if letters weren't consecutive.
5330 * at least it didn't have to worry about non-C locales. The
5331 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
1c846c1f 5332 * arranged in order (although not consecutively) and that only
9d116dd7
JH		 5333 * [A-Za-z] are accepted by isALPHA in the C locale.
5334 */
5335 if (*d != 'z' && *d != 'Z') {
5336 do { ++*d; } while (!isALPHA(*d));
5337 return;
5338 }
5339 *(d--) -= 'z' - 'a';
5340#else
79072805
LW		 5341 ++*d;
5342 if (isALPHA(*d))
5343 return;
5344 *(d--) -= 'z' - 'a' + 1;
9d116dd7 5345#endif
79072805
LW		 5346 }
5347 }
5348 /* oh,oh, the number grew */
5349 SvGROW(sv, SvCUR(sv) + 2);
5350 SvCUR(sv)++;
463ee0b2 5351 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 5352 *d = d[-1];
5353 if (isDIGIT(d[1]))
5354 *d = '1';
5355 else
5356 *d = d[1];
5357}
5358
954c1994
GS		 5359/*
5360=for apidoc sv_dec
5361
5362Auto-decrement of the value in the SV.
5363
5364=cut
5365*/
5366
79072805 5367void
864dbfa3 5368Perl_sv_dec(pTHX_ register SV *sv)
79072805 5369{
463ee0b2
LW		 5370 int flags;
5371
79072805
LW		 5372 if (!sv)
5373 return;
b23a5f78
GB		 5374 if (SvGMAGICAL(sv))
5375 mg_get(sv);
ed6116ce 5376 if (SvTHINKFIRST(sv)) {
0f15f207 5377 if (SvREADONLY(sv)) {
3280af22 5378 if (PL_curcop != &PL_compiling)
cea2e8a9 5379 Perl_croak(aTHX_ PL_no_modify);
0f15f207 5380 }
a0d0e21e 5381 if (SvROK(sv)) {
b5be31e9 5382 IV i;
9e7bc3e8
JD		 5383 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
5384 return;
56431972 5385 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 5386 sv_unref(sv);
5387 sv_setiv(sv, i);
a0d0e21e 5388 }
ed6116ce 5389 }
28e5dec8
JH		 5390 /* Unlike sv_inc we don't have to worry about string-never-numbers
5391 and keeping them magic. But we mustn't warn on punting */
8990e307 5392 flags = SvFLAGS(sv);
28e5dec8
JH		 5393 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5394 /* It's publicly an integer, or privately an integer-not-float */
5395 oops_its_int:
25da4f38
IZ		 5396 if (SvIsUV(sv)) {
5397 if (SvUVX(sv) == 0) {
5398 (void)SvIOK_only(sv);
5399 SvIVX(sv) = -1;
5400 }
5401 else {
5402 (void)SvIOK_only_UV(sv);
5403 --SvUVX(sv);
1c846c1f 5404 }
25da4f38
IZ		 5405 } else {
5406 if (SvIVX(sv) == IV_MIN)
65202027 5407 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 5408 else {
5409 (void)SvIOK_only(sv);
5410 --SvIVX(sv);
1c846c1f 5411 }
55497cff 5412 }
5413 return;
5414 }
28e5dec8
JH		 5415 if (flags & SVp_NOK) {
5416 SvNVX(sv) -= 1.0;
5417 (void)SvNOK_only(sv);
5418 return;
5419 }
8990e307 5420 if (!(flags & SVp_POK)) {
4633a7c4
LW		 5421 if ((flags & SVTYPEMASK) < SVt_PVNV)
5422 sv_upgrade(sv, SVt_NV);
463ee0b2 5423 SvNVX(sv) = -1.0;
a0d0e21e 5424 (void)SvNOK_only(sv);
79072805
LW		 5425 return;
5426 }
28e5dec8
JH		 5427#ifdef PERL_PRESERVE_IVUV
5428 {
5429 I32 numtype = looks_like_number(sv);
5430 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5431 /* Need to try really hard to see if it's an integer.
5432 9.22337203685478e+18 is an integer.
5433 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5434 so $a="9.22337203685478e+18"; $a+0; $a--
5435 needs to be the same as $a="9.22337203685478e+18"; $a--
5436 or we go insane. */
d460ef45 5437
28e5dec8
JH		 5438 (void) sv_2iv(sv);
5439 if (SvIOK(sv))
5440 goto oops_its_int;
5441
5442 /* sv_2iv *should* have made this an NV */
5443 if (flags & SVp_NOK) {
5444 (void)SvNOK_only(sv);
5445 SvNVX(sv) -= 1.0;
5446 return;
5447 }
5448 /* I don't think we can get here. Maybe I should assert this
5449 And if we do get here I suspect that sv_setnv will croak. NWC
5450 Fall through. */
5451#if defined(USE_LONG_DOUBLE)
5452 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5453 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5454#else
5455 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5456 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5457#endif
5458 }
5459 }
5460#endif /* PERL_PRESERVE_IVUV */
097ee67d 5461 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 5462}
5463
954c1994
GS		 5464/*
5465=for apidoc sv_mortalcopy
5466
5467Creates a new SV which is a copy of the original SV. The new SV is marked
5468as mortal.
5469
5470=cut
5471*/
5472
79072805
LW		 5473/* Make a string that will exist for the duration of the expression
5474 * evaluation. Actually, it may have to last longer than that, but
5475 * hopefully we won't free it until it has been assigned to a
5476 * permanent location. */
5477
5478SV *
864dbfa3 5479Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 5480{
463ee0b2 5481 register SV *sv;
79072805 5482
4561caa4 5483 new_SV(sv);
79072805 5484 sv_setsv(sv,oldstr);
677b06e3
GS		 5485 EXTEND_MORTAL(1);
5486 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 5487 SvTEMP_on(sv);
5488 return sv;
5489}
5490
954c1994
GS		 5491/*
5492=for apidoc sv_newmortal
5493
5494Creates a new SV which is mortal. The reference count of the SV is set to 1.
5495
5496=cut
5497*/
5498
8990e307 5499SV *
864dbfa3 5500Perl_sv_newmortal(pTHX)
8990e307
LW		 5501{
5502 register SV *sv;
5503
4561caa4 5504 new_SV(sv);
8990e307 5505 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 5506 EXTEND_MORTAL(1);
5507 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 5508 return sv;
5509}
5510
954c1994
GS		 5511/*
5512=for apidoc sv_2mortal
5513
5514Marks an SV as mortal. The SV will be destroyed when the current context
5515ends.
5516
5517=cut
5518*/
5519
79072805
LW		 5520/* same thing without the copying */
5521
5522SV *
864dbfa3 5523Perl_sv_2mortal(pTHX_ register SV *sv)
79072805
LW		 5524{
5525 if (!sv)
5526 return sv;
d689ffdd 5527 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 5528 return sv;
677b06e3
GS		 5529 EXTEND_MORTAL(1);
5530 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 5531 SvTEMP_on(sv);
79072805
LW		 5532 return sv;
5533}
5534
954c1994
GS		 5535/*
5536=for apidoc newSVpv
5537
5538Creates a new SV and copies a string into it. The reference count for the
5539SV is set to 1. If C<len> is zero, Perl will compute the length using
5540strlen(). For efficiency, consider using C<newSVpvn> instead.
5541
5542=cut
5543*/
5544
79072805 5545SV *
864dbfa3 5546Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 5547{
463ee0b2 5548 register SV *sv;
79072805 5549
4561caa4 5550 new_SV(sv);
79072805
LW		 5551 if (!len)
5552 len = strlen(s);
5553 sv_setpvn(sv,s,len);
5554 return sv;
5555}
5556
954c1994
GS		 5557/*
5558=for apidoc newSVpvn
5559
5560Creates a new SV and copies a string into it. The reference count for the
1c846c1f 5561SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
954c1994
GS		 5562string. You are responsible for ensuring that the source string is at least
5563C<len> bytes long.
5564
5565=cut
5566*/
5567
9da1e3b5 5568SV *
864dbfa3 5569Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 5570{
5571 register SV *sv;
5572
5573 new_SV(sv);
9da1e3b5
MUN		 5574 sv_setpvn(sv,s,len);
5575 return sv;
5576}
5577
1c846c1f
NIS		 5578/*
5579=for apidoc newSVpvn_share
5580
5581Creates a new SV and populates it with a string from
5582the string table. Turns on READONLY and FAKE.
5583The idea here is that as string table is used for shared hash
5584keys these strings will have SvPVX == HeKEY and hash lookup
5585will avoid string compare.
5586
5587=cut
5588*/
5589
5590SV *
c3654f1a 5591Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
1c846c1f
NIS		 5592{
5593 register SV *sv;
c3654f1a
IH		 5594 bool is_utf8 = FALSE;
5595 if (len < 0) {
5596 len = -len;
5597 is_utf8 = TRUE;
5598 }
1c846c1f
NIS		 5599 if (!hash)
5600 PERL_HASH(hash, src, len);
5601 new_SV(sv);
5602 sv_upgrade(sv, SVt_PVIV);
c3654f1a 5603 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
1c846c1f
NIS		 5604 SvCUR(sv) = len;
5605 SvUVX(sv) = hash;
5606 SvLEN(sv) = 0;
5607 SvREADONLY_on(sv);
5608 SvFAKE_on(sv);
5609 SvPOK_on(sv);
c3654f1a
IH		 5610 if (is_utf8)
5611 SvUTF8_on(sv);
1c846c1f
NIS		 5612 return sv;
5613}
5614
cea2e8a9 5615#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 5616SV *
cea2e8a9 5617Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 5618{
cea2e8a9 5619 dTHX;
46fc3d4c 5620 register SV *sv;
5621 va_list args;
46fc3d4c 5622 va_start(args, pat);
c5be433b 5623 sv = vnewSVpvf(pat, &args);
46fc3d4c 5624 va_end(args);
5625 return sv;
5626}
cea2e8a9 5627#endif
46fc3d4c 5628
954c1994
GS		 5629/*
5630=for apidoc newSVpvf
5631
5632Creates a new SV an initialize it with the string formatted like
5633C<sprintf>.
5634
5635=cut
5636*/
5637
cea2e8a9
GS		 5638SV *
5639Perl_newSVpvf(pTHX_ const char* pat, ...)
5640{
5641 register SV *sv;
5642 va_list args;
cea2e8a9 5643 va_start(args, pat);
c5be433b 5644 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 5645 va_end(args);
5646 return sv;
5647}
46fc3d4c 5648
79072805 5649SV *
c5be433b
GS		 5650Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
5651{
5652 register SV *sv;
5653 new_SV(sv);
5654 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5655 return sv;
5656}
5657
954c1994
GS		 5658/*
5659=for apidoc newSVnv
5660
5661Creates a new SV and copies a floating point value into it.
5662The reference count for the SV is set to 1.
5663
5664=cut
5665*/
5666
c5be433b 5667SV *
65202027 5668Perl_newSVnv(pTHX_ NV n)
79072805 5669{
463ee0b2 5670 register SV *sv;
79072805 5671
4561caa4 5672 new_SV(sv);
79072805
LW		 5673 sv_setnv(sv,n);
5674 return sv;
5675}
5676
954c1994
GS		 5677/*
5678=for apidoc newSViv
5679
5680Creates a new SV and copies an integer into it. The reference count for the
5681SV is set to 1.
5682
5683=cut
5684*/
5685
79072805 5686SV *
864dbfa3 5687Perl_newSViv(pTHX_ IV i)
79072805 5688{
463ee0b2 5689 register SV *sv;
79072805 5690
4561caa4 5691 new_SV(sv);
79072805
LW		 5692 sv_setiv(sv,i);
5693 return sv;
5694}
5695
954c1994 5696/*
1a3327fb
JH		 5697=for apidoc newSVuv
5698
5699Creates a new SV and copies an unsigned integer into it.
5700The reference count for the SV is set to 1.
5701
5702=cut
5703*/
5704
5705SV *
5706Perl_newSVuv(pTHX_ UV u)
5707{
5708 register SV *sv;
5709
5710 new_SV(sv);
5711 sv_setuv(sv,u);
5712 return sv;
5713}
5714
5715/*
954c1994
GS		 5716=for apidoc newRV_noinc
5717
5718Creates an RV wrapper for an SV. The reference count for the original
5719SV is B<not> incremented.
5720
5721=cut
5722*/
5723
2304df62 5724SV *
864dbfa3 5725Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62
AD		 5726{
5727 register SV *sv;
5728
4561caa4 5729 new_SV(sv);
2304df62 5730 sv_upgrade(sv, SVt_RV);
76e3520e 5731 SvTEMP_off(tmpRef);
d689ffdd 5732 SvRV(sv) = tmpRef;
2304df62 5733 SvROK_on(sv);
2304df62
AD		 5734 return sv;
5735}
5736
954c1994 5737/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5738SV *
864dbfa3 5739Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5740{
5f6447b6 5741 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5742}
5f05dabc 5743
954c1994
GS		 5744/*
5745=for apidoc newSVsv
5746
5747Creates a new SV which is an exact duplicate of the original SV.
5748
5749=cut
5750*/
5751
79072805
LW		 5752/* make an exact duplicate of old */
5753
5754SV *
864dbfa3 5755Perl_newSVsv(pTHX_ register SV *old)
79072805 5756{
463ee0b2 5757 register SV *sv;
79072805
LW		 5758
5759 if (!old)
5760 return Nullsv;
8990e307 5761 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5762 if (ckWARN_d(WARN_INTERNAL))
5763 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5764 return Nullsv;
5765 }
4561caa4 5766 new_SV(sv);
ff68c719 5767 if (SvTEMP(old)) {
5768 SvTEMP_off(old);
463ee0b2 5769 sv_setsv(sv,old);
ff68c719 5770 SvTEMP_on(old);
79072805
LW		 5771 }
5772 else
463ee0b2
LW		 5773 sv_setsv(sv,old);
5774 return sv;
79072805
LW		 5775}
5776
5777void
864dbfa3 5778Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5779{
5780 register HE *entry;
5781 register GV *gv;
5782 register SV *sv;
5783 register I32 i;
5784 register PMOP *pm;
5785 register I32 max;
4802d5d7 5786 char todo[PERL_UCHAR_MAX+1];
79072805 5787
49d8d3a1
MB		 5788 if (!stash)
5789 return;
5790
79072805
LW		 5791 if (!*s) { /* reset ?? searches */
5792 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5793 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5794 }
5795 return;
5796 }
5797
5798 /* reset variables */
5799
5800 if (!HvARRAY(stash))
5801 return;
463ee0b2
LW		 5802
5803 Zero(todo, 256, char);
79072805 5804 while (*s) {
4802d5d7 5805 i = (unsigned char)*s;
79072805
LW		 5806 if (s[1] == '-') {
5807 s += 2;
5808 }
4802d5d7 5809 max = (unsigned char)*s++;
79072805 5810 for ( ; i <= max; i++) {
463ee0b2
LW		 5811 todo[i] = 1;
5812 }
a0d0e21e 5813 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5814 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5815 entry;
5816 entry = HeNEXT(entry))
5817 {
1edc1566 5818 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5819 continue;
1edc1566 5820 gv = (GV*)HeVAL(entry);
79072805 5821 sv = GvSV(gv);
9e35f4b3
GS		 5822 if (SvTHINKFIRST(sv)) {
5823 if (!SvREADONLY(sv) && SvROK(sv))
5824 sv_unref(sv);
5825 continue;
5826 }
a0d0e21e 5827 (void)SvOK_off(sv);
79072805
LW		 5828 if (SvTYPE(sv) >= SVt_PV) {
5829 SvCUR_set(sv, 0);
463ee0b2
LW		 5830 if (SvPVX(sv) != Nullch)
5831 *SvPVX(sv) = '\0';
44a8e56a 5832 SvTAINT(sv);
79072805
LW		 5833 }
5834 if (GvAV(gv)) {
5835 av_clear(GvAV(gv));
5836 }
44a8e56a 5837 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5838 hv_clear(GvHV(gv));
fa6a1c44 5839#ifdef USE_ENVIRON_ARRAY
3280af22 5840 if (gv == PL_envgv)
79072805 5841 environ[0] = Nullch;
a0d0e21e 5842#endif
79072805
LW		 5843 }
5844 }
5845 }
5846 }
5847}
5848
46fc3d4c 5849IO*
864dbfa3 5850Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5851{
5852 IO* io;
5853 GV* gv;
2d8e6c8d 5854 STRLEN n_a;
46fc3d4c 5855
5856 switch (SvTYPE(sv)) {
5857 case SVt_PVIO:
5858 io = (IO*)sv;
5859 break;
5860 case SVt_PVGV:
5861 gv = (GV*)sv;
5862 io = GvIO(gv);
5863 if (!io)
cea2e8a9 5864 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5865 break;
5866 default:
5867 if (!SvOK(sv))
cea2e8a9 5868 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5869 if (SvROK(sv))
5870 return sv_2io(SvRV(sv));
2d8e6c8d 5871 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5872 if (gv)
5873 io = GvIO(gv);
5874 else
5875 io = 0;
5876 if (!io)
cea2e8a9 5877 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5878 break;
5879 }
5880 return io;
5881}
5882
79072805 5883CV *
864dbfa3 5884Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5885{
5886 GV *gv;
5887 CV *cv;
2d8e6c8d 5888 STRLEN n_a;
79072805
LW		 5889
5890 if (!sv)
93a17b20 5891 return *gvp = Nullgv, Nullcv;
79072805 5892 switch (SvTYPE(sv)) {
79072805
LW		 5893 case SVt_PVCV:
5894 *st = CvSTASH(sv);
5895 *gvp = Nullgv;
5896 return (CV*)sv;
5897 case SVt_PVHV:
5898 case SVt_PVAV:
5899 *gvp = Nullgv;
5900 return Nullcv;
8990e307
LW		 5901 case SVt_PVGV:
5902 gv = (GV*)sv;
a0d0e21e 5903 *gvp = gv;
8990e307
LW		 5904 *st = GvESTASH(gv);
5905 goto fix_gv;
5906
79072805 5907 default:
a0d0e21e
LW		 5908 if (SvGMAGICAL(sv))
5909 mg_get(sv);
5910 if (SvROK(sv)) {
f5284f61
IZ		 5911 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5912 tryAMAGICunDEREF(to_cv);
5913
62f274bf
GS		 5914 sv = SvRV(sv);
5915 if (SvTYPE(sv) == SVt_PVCV) {
5916 cv = (CV*)sv;
5917 *gvp = Nullgv;
5918 *st = CvSTASH(cv);
5919 return cv;
5920 }
5921 else if(isGV(sv))
5922 gv = (GV*)sv;
5923 else
cea2e8a9 5924 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5925 }
62f274bf 5926 else if (isGV(sv))
79072805
LW		 5927 gv = (GV*)sv;
5928 else
2d8e6c8d 5929 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5930 *gvp = gv;
5931 if (!gv)
5932 return Nullcv;
5933 *st = GvESTASH(gv);
8990e307 5934 fix_gv:
8ebc5c01 5935 if (lref && !GvCVu(gv)) {
4633a7c4 5936 SV *tmpsv;
748a9306 5937 ENTER;
4633a7c4 5938 tmpsv = NEWSV(704,0);
16660edb 5939 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5940 /* XXX this is probably not what they think they're getting.
5941 * It has the same effect as "sub name;", i.e. just a forward
5942 * declaration! */
774d564b 5943 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5944 newSVOP(OP_CONST, 0, tmpsv),
5945 Nullop,
8990e307 5946 Nullop);
748a9306 5947 LEAVE;
8ebc5c01 5948 if (!GvCVu(gv))
cea2e8a9 5949 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5950 }
8ebc5c01 5951 return GvCVu(gv);
79072805
LW		 5952 }
5953}
5954
c461cf8f
JH		 5955/*
5956=for apidoc sv_true
5957
5958Returns true if the SV has a true value by Perl's rules.
5959
5960=cut
5961*/
5962
79072805 5963I32
864dbfa3 5964Perl_sv_true(pTHX_ register SV *sv)
79072805 5965{
8990e307
LW		 5966 if (!sv)
5967 return 0;
79072805 5968 if (SvPOK(sv)) {
4e35701f
NIS		 5969 register XPV* tXpv;
5970 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5971 (tXpv->xpv_cur > 1 ||
4e35701f 5972 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5973 return 1;
5974 else
5975 return 0;
5976 }
5977 else {
5978 if (SvIOK(sv))
463ee0b2 5979 return SvIVX(sv) != 0;
79072805
LW		 5980 else {
5981 if (SvNOK(sv))
463ee0b2 5982 return SvNVX(sv) != 0.0;
79072805 5983 else
463ee0b2 5984 return sv_2bool(sv);
79072805
LW		 5985 }
5986 }
5987}
79072805 5988
ff68c719 5989IV
864dbfa3 5990Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5991{
25da4f38
IZ		 5992 if (SvIOK(sv)) {
5993 if (SvIsUV(sv))
5994 return (IV)SvUVX(sv);
ff68c719 5995 return SvIVX(sv);
25da4f38 5996 }
ff68c719 5997 return sv_2iv(sv);
85e6fe83 5998}
85e6fe83 5999
ff68c719 6000UV
864dbfa3 6001Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 6002{
25da4f38
IZ		 6003 if (SvIOK(sv)) {
6004 if (SvIsUV(sv))
6005 return SvUVX(sv);
6006 return (UV)SvIVX(sv);
6007 }
ff68c719 6008 return sv_2uv(sv);
6009}
85e6fe83 6010
65202027 6011NV
864dbfa3 6012Perl_sv_nv(pTHX_ register SV *sv)
79072805 6013{
ff68c719 6014 if (SvNOK(sv))
6015 return SvNVX(sv);
6016 return sv_2nv(sv);
79072805 6017}
79072805 6018
79072805 6019char *
864dbfa3 6020Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 6021{
6022 STRLEN n_a;
6023
6024 if (SvPOK(sv))
6025 return SvPVX(sv);
6026
6027 return sv_2pv(sv, &n_a);
6028}
6029
6030char *
864dbfa3 6031Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 6032{
85e6fe83
LW		 6033 if (SvPOK(sv)) {
6034 *lp = SvCUR(sv);
a0d0e21e 6035 return SvPVX(sv);
85e6fe83 6036 }
463ee0b2 6037 return sv_2pv(sv, lp);
79072805 6038}
79072805 6039
c461cf8f
JH		 6040/*
6041=for apidoc sv_pvn_force
6042
6043Get a sensible string out of the SV somehow.
6044
6045=cut
6046*/
6047
a0d0e21e 6048char *
864dbfa3 6049Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 6050{
6051 char *s;
6052
6fc92669
GS		 6053 if (SvTHINKFIRST(sv) && !SvROK(sv))
6054 sv_force_normal(sv);
1c846c1f 6055
a0d0e21e
LW		 6056 if (SvPOK(sv)) {
6057 *lp = SvCUR(sv);
6058 }
6059 else {
748a9306 6060 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
cea2e8a9 6061 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 6062 PL_op_name[PL_op->op_type]);
a0d0e21e 6063 }
4633a7c4
LW		 6064 else
6065 s = sv_2pv(sv, lp);
a0d0e21e
LW		 6066 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
6067 STRLEN len = *lp;
1c846c1f 6068
a0d0e21e
LW		 6069 if (SvROK(sv))
6070 sv_unref(sv);
6071 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
6072 SvGROW(sv, len + 1);
6073 Move(s,SvPVX(sv),len,char);
6074 SvCUR_set(sv, len);
6075 *SvEND(sv) = '\0';
6076 }
6077 if (!SvPOK(sv)) {
6078 SvPOK_on(sv); /* validate pointer */
6079 SvTAINT(sv);
1d7c1841
GS		 6080 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
6081 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 6082 }
6083 }
6084 return SvPVX(sv);
6085}
6086
6087char *
7340a771
GS		 6088Perl_sv_pvbyte(pTHX_ SV *sv)
6089{
6090 return sv_pv(sv);
6091}
6092
6093char *
6094Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
6095{
6096 return sv_pvn(sv,lp);
6097}
6098
6099char *
6100Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
6101{
6102 return sv_pvn_force(sv,lp);
6103}
6104
6105char *
6106Perl_sv_pvutf8(pTHX_ SV *sv)
6107{
560a288e 6108 sv_utf8_upgrade(sv);
7340a771
GS		 6109 return sv_pv(sv);
6110}
6111
6112char *
6113Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
6114{
560a288e 6115 sv_utf8_upgrade(sv);
7340a771
GS		 6116 return sv_pvn(sv,lp);
6117}
6118
c461cf8f
JH		 6119/*
6120=for apidoc sv_pvutf8n_force
6121
6122Get a sensible UTF8-encoded string out of the SV somehow. See
6123L</sv_pvn_force>.
6124
6125=cut
6126*/
6127
7340a771
GS		 6128char *
6129Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
6130{
560a288e 6131 sv_utf8_upgrade(sv);
7340a771
GS		 6132 return sv_pvn_force(sv,lp);
6133}
6134
c461cf8f
JH		 6135/*
6136=for apidoc sv_reftype
6137
6138Returns a string describing what the SV is a reference to.
6139
6140=cut
6141*/
6142
7340a771 6143char *
864dbfa3 6144Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 6145{
6146 if (ob && SvOBJECT(sv))
6147 return HvNAME(SvSTASH(sv));
6148 else {
6149 switch (SvTYPE(sv)) {
6150 case SVt_NULL:
6151 case SVt_IV:
6152 case SVt_NV:
6153 case SVt_RV:
6154 case SVt_PV:
6155 case SVt_PVIV:
6156 case SVt_PVNV:
6157 case SVt_PVMG:
6158 case SVt_PVBM:
6159 if (SvROK(sv))
6160 return "REF";
6161 else
6162 return "SCALAR";
6163 case SVt_PVLV: return "LVALUE";
6164 case SVt_PVAV: return "ARRAY";
6165 case SVt_PVHV: return "HASH";
6166 case SVt_PVCV: return "CODE";
6167 case SVt_PVGV: return "GLOB";
1d2dff63 6168 case SVt_PVFM: return "FORMAT";
27f9d8f3 6169 case SVt_PVIO: return "IO";
a0d0e21e
LW		 6170 default: return "UNKNOWN";
6171 }
6172 }
6173}
6174
954c1994
GS		 6175/*
6176=for apidoc sv_isobject
6177
6178Returns a boolean indicating whether the SV is an RV pointing to a blessed
6179object. If the SV is not an RV, or if the object is not blessed, then this
6180will return false.
6181
6182=cut
6183*/
6184
463ee0b2 6185int
864dbfa3 6186Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 6187{
68dc0745 6188 if (!sv)
6189 return 0;
6190 if (SvGMAGICAL(sv))
6191 mg_get(sv);
85e6fe83
LW		 6192 if (!SvROK(sv))
6193 return 0;
6194 sv = (SV*)SvRV(sv);
6195 if (!SvOBJECT(sv))
6196 return 0;
6197 return 1;
6198}
6199
954c1994
GS		 6200/*
6201=for apidoc sv_isa
6202
6203Returns a boolean indicating whether the SV is blessed into the specified
6204class. This does not check for subtypes; use C<sv_derived_from> to verify
6205an inheritance relationship.
6206
6207=cut
6208*/
6209
85e6fe83 6210int
864dbfa3 6211Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 6212{
68dc0745 6213 if (!sv)
6214 return 0;
6215 if (SvGMAGICAL(sv))
6216 mg_get(sv);
ed6116ce 6217 if (!SvROK(sv))
463ee0b2 6218 return 0;
ed6116ce
LW		 6219 sv = (SV*)SvRV(sv);
6220 if (!SvOBJECT(sv))
463ee0b2
LW		 6221 return 0;
6222
6223 return strEQ(HvNAME(SvSTASH(sv)), name);
6224}
6225
954c1994
GS		 6226/*
6227=for apidoc newSVrv
6228
6229Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
6230it will be upgraded to one. If C<classname> is non-null then the new SV will
6231be blessed in the specified package. The new SV is returned and its
6232reference count is 1.
6233
6234=cut
6235*/
6236
463ee0b2 6237SV*
864dbfa3 6238Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 6239{
463ee0b2
LW		 6240 SV *sv;
6241
4561caa4 6242 new_SV(sv);
51cf62d8 6243
2213622d 6244 SV_CHECK_THINKFIRST(rv);
51cf62d8 6245 SvAMAGIC_off(rv);
51cf62d8 6246
0199fce9
JD		 6247 if (SvTYPE(rv) >= SVt_PVMG) {
6248 U32 refcnt = SvREFCNT(rv);
6249 SvREFCNT(rv) = 0;
6250 sv_clear(rv);
6251 SvFLAGS(rv) = 0;
6252 SvREFCNT(rv) = refcnt;
6253 }
6254
51cf62d8 6255 if (SvTYPE(rv) < SVt_RV)
0199fce9
JD		 6256 sv_upgrade(rv, SVt_RV);
6257 else if (SvTYPE(rv) > SVt_RV) {
6258 (void)SvOOK_off(rv);
6259 if (SvPVX(rv) && SvLEN(rv))
6260 Safefree(SvPVX(rv));
6261 SvCUR_set(rv, 0);
6262 SvLEN_set(rv, 0);
6263 }
51cf62d8
OT		 6264
6265 (void)SvOK_off(rv);
053fc874 6266 SvRV(rv) = sv;
ed6116ce 6267 SvROK_on(rv);
463ee0b2 6268
a0d0e21e
LW		 6269 if (classname) {
6270 HV* stash = gv_stashpv(classname, TRUE);
6271 (void)sv_bless(rv, stash);
6272 }
6273 return sv;
6274}
6275
954c1994
GS		 6276/*
6277=for apidoc sv_setref_pv
6278
6279Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
6280argument will be upgraded to an RV. That RV will be modified to point to
6281the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
6282into the SV. The C<classname> argument indicates the package for the
6283blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6284will be returned and will have a reference count of 1.
6285
6286Do not use with other Perl types such as HV, AV, SV, CV, because those
6287objects will become corrupted by the pointer copy process.
6288
6289Note that C<sv_setref_pvn> copies the string while this copies the pointer.
6290
6291=cut
6292*/
6293
a0d0e21e 6294SV*
864dbfa3 6295Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 6296{
189b2af5 6297 if (!pv) {
3280af22 6298 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 6299 SvSETMAGIC(rv);
6300 }
a0d0e21e 6301 else
56431972 6302 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 6303 return rv;
6304}
6305
954c1994
GS		 6306/*
6307=for apidoc sv_setref_iv
6308
6309Copies an integer into a new SV, optionally blessing the SV. The C<rv>
6310argument will be upgraded to an RV. That RV will be modified to point to
6311the new SV. The C<classname> argument indicates the package for the
6312blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6313will be returned and will have a reference count of 1.
6314
6315=cut
6316*/
6317
a0d0e21e 6318SV*
864dbfa3 6319Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 6320{
6321 sv_setiv(newSVrv(rv,classname), iv);
6322 return rv;
6323}
6324
954c1994
GS		 6325/*
6326=for apidoc sv_setref_nv
6327
6328Copies a double into a new SV, optionally blessing the SV. The C<rv>
6329argument will be upgraded to an RV. That RV will be modified to point to
6330the new SV. The C<classname> argument indicates the package for the
6331blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6332will be returned and will have a reference count of 1.
6333
6334=cut
6335*/
6336
a0d0e21e 6337SV*
65202027 6338Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 6339{
6340 sv_setnv(newSVrv(rv,classname), nv);
6341 return rv;
6342}
463ee0b2 6343
954c1994
GS		 6344/*
6345=for apidoc sv_setref_pvn
6346
6347Copies a string into a new SV, optionally blessing the SV. The length of the
6348string must be specified with C<n>. The C<rv> argument will be upgraded to
6349an RV. That RV will be modified to point to the new SV. The C<classname>
6350argument indicates the package for the blessing. Set C<classname> to
6351C<Nullch> to avoid the blessing. The new SV will be returned and will have
6352a reference count of 1.
6353
6354Note that C<sv_setref_pv> copies the pointer while this copies the string.
6355
6356=cut
6357*/
6358
a0d0e21e 6359SV*
864dbfa3 6360Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 6361{
6362 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 6363 return rv;
6364}
6365
954c1994
GS		 6366/*
6367=for apidoc sv_bless
6368
6369Blesses an SV into a specified package. The SV must be an RV. The package
6370must be designated by its stash (see C<gv_stashpv()>). The reference count
6371of the SV is unaffected.
6372
6373=cut
6374*/
6375
a0d0e21e 6376SV*
864dbfa3 6377Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 6378{
76e3520e 6379 SV *tmpRef;
a0d0e21e 6380 if (!SvROK(sv))
cea2e8a9 6381 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 6382 tmpRef = SvRV(sv);
6383 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
6384 if (SvREADONLY(tmpRef))
cea2e8a9 6385 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 6386 if (SvOBJECT(tmpRef)) {
6387 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 6388 --PL_sv_objcount;
76e3520e 6389 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 6390 }
a0d0e21e 6391 }
76e3520e
GS		 6392 SvOBJECT_on(tmpRef);
6393 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 6394 ++PL_sv_objcount;
76e3520e
GS		 6395 (void)SvUPGRADE(tmpRef, SVt_PVMG);
6396 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 6397
2e3febc6
CS		 6398 if (Gv_AMG(stash))
6399 SvAMAGIC_on(sv);
6400 else
6401 SvAMAGIC_off(sv);
a0d0e21e
LW		 6402
6403 return sv;
6404}
6405
76e3520e 6406STATIC void
cea2e8a9 6407S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 6408{
850fabdf
GS		 6409 void *xpvmg;
6410
a0d0e21e
LW		 6411 assert(SvTYPE(sv) == SVt_PVGV);
6412 SvFAKE_off(sv);
6413 if (GvGP(sv))
1edc1566 6414 gp_free((GV*)sv);
e826b3c7
GS		 6415 if (GvSTASH(sv)) {
6416 SvREFCNT_dec(GvSTASH(sv));
6417 GvSTASH(sv) = Nullhv;
6418 }
a0d0e21e
LW		 6419 sv_unmagic(sv, '*');
6420 Safefree(GvNAME(sv));
a5f75d66 6421 GvMULTI_off(sv);
850fabdf
GS		 6422
6423 /* need to keep SvANY(sv) in the right arena */
6424 xpvmg = new_XPVMG();
6425 StructCopy(SvANY(sv), xpvmg, XPVMG);
6426 del_XPVGV(SvANY(sv));
6427 SvANY(sv) = xpvmg;
6428
a0d0e21e
LW		 6429 SvFLAGS(sv) &= ~SVTYPEMASK;
6430 SvFLAGS(sv) |= SVt_PVMG;
6431}
6432
954c1994 6433/*
840a7b70 6434=for apidoc sv_unref_flags
954c1994
GS		 6435
6436Unsets the RV status of the SV, and decrements the reference count of
6437whatever was being referenced by the RV. This can almost be thought of
840a7b70
IZ		 6438as a reversal of C<newSVrv>. The C<cflags> argument can contain
6439C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
6440(otherwise the decrementing is conditional on the reference count being
6441different from one or the reference being a readonly SV).
7889fe52 6442See C<SvROK_off>.
954c1994
GS		 6443
6444=cut
6445*/
6446
ed6116ce 6447void
840a7b70 6448Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
ed6116ce 6449{
a0d0e21e 6450 SV* rv = SvRV(sv);
810b8aa5
GS		 6451
6452 if (SvWEAKREF(sv)) {
6453 sv_del_backref(sv);
6454 SvWEAKREF_off(sv);
6455 SvRV(sv) = 0;
6456 return;
6457 }
ed6116ce
LW		 6458 SvRV(sv) = 0;
6459 SvROK_off(sv);
840a7b70 6460 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
4633a7c4 6461 SvREFCNT_dec(rv);
840a7b70 6462 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
4633a7c4 6463 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 6464}
8990e307 6465
840a7b70
IZ		 6466/*
6467=for apidoc sv_unref
6468
6469Unsets the RV status of the SV, and decrements the reference count of
6470whatever was being referenced by the RV. This can almost be thought of
6471as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
7889fe52 6472being zero. See C<SvROK_off>.
840a7b70
IZ		 6473
6474=cut
6475*/
6476
6477void
6478Perl_sv_unref(pTHX_ SV *sv)
6479{
6480 sv_unref_flags(sv, 0);
6481}
6482
bbce6d69 6483void
864dbfa3 6484Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 6485{
6486 sv_magic((sv), Nullsv, 't', Nullch, 0);
6487}
6488
6489void
864dbfa3 6490Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 6491{
13f57bf8 6492 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 6493 MAGIC *mg = mg_find(sv, 't');
6494 if (mg)
565764a8 6495 mg->mg_len &= ~1;
36477c24 6496 }
bbce6d69 6497}
6498
6499bool
864dbfa3 6500Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 6501{
13f57bf8 6502 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 6503 MAGIC *mg = mg_find(sv, 't');
155aba94 6504 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 6505 return TRUE;
6506 }
6507 return FALSE;
bbce6d69 6508}
6509
954c1994
GS		 6510/*
6511=for apidoc sv_setpviv
6512
6513Copies an integer into the given SV, also updating its string value.
6514Does not handle 'set' magic. See C<sv_setpviv_mg>.
6515
6516=cut
6517*/
6518
84902520 6519void
864dbfa3 6520Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 6521{
25da4f38
IZ		 6522 char buf[TYPE_CHARS(UV)];
6523 char *ebuf;
6524 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 6525
25da4f38 6526 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 6527}
6528
ef50df4b 6529
954c1994
GS		 6530/*
6531=for apidoc sv_setpviv_mg
6532
6533Like C<sv_setpviv>, but also handles 'set' magic.
6534
6535=cut
6536*/
6537
ef50df4b 6538void
864dbfa3 6539Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 6540{
25da4f38
IZ		 6541 char buf[TYPE_CHARS(UV)];
6542 char *ebuf;
6543 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6544
6545 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 6546 SvSETMAGIC(sv);
6547}
6548
cea2e8a9
GS		 6549#if defined(PERL_IMPLICIT_CONTEXT)
6550void
6551Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
6552{
6553 dTHX;
6554 va_list args;
6555 va_start(args, pat);
c5be433b 6556 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 6557 va_end(args);
6558}
6559
6560
6561void
6562Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
6563{
6564 dTHX;
6565 va_list args;
6566 va_start(args, pat);
c5be433b 6567 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 6568 va_end(args);
cea2e8a9
GS		 6569}
6570#endif
6571
954c1994
GS		 6572/*
6573=for apidoc sv_setpvf
6574
6575Processes its arguments like C<sprintf> and sets an SV to the formatted
6576output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
6577
6578=cut
6579*/
6580
46fc3d4c 6581void
864dbfa3 6582Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 6583{
6584 va_list args;
46fc3d4c 6585 va_start(args, pat);
c5be433b 6586 sv_vsetpvf(sv, pat, &args);
46fc3d4c 6587 va_end(args);
6588}
6589
c5be433b
GS		 6590void
6591Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6592{
6593 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6594}
ef50df4b 6595
954c1994
GS		 6596/*
6597=for apidoc sv_setpvf_mg
6598
6599Like C<sv_setpvf>, but also handles 'set' magic.
6600
6601=cut
6602*/
6603
ef50df4b 6604void
864dbfa3 6605Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 6606{
6607 va_list args;
ef50df4b 6608 va_start(args, pat);
c5be433b 6609 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 6610 va_end(args);
c5be433b
GS		 6611}
6612
6613void
6614Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6615{
6616 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 6617 SvSETMAGIC(sv);
6618}
6619
cea2e8a9
GS		 6620#if defined(PERL_IMPLICIT_CONTEXT)
6621void
6622Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
6623{
6624 dTHX;
6625 va_list args;
6626 va_start(args, pat);
c5be433b 6627 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 6628 va_end(args);
6629}
6630
6631void
6632Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
6633{
6634 dTHX;
6635 va_list args;
6636 va_start(args, pat);
c5be433b 6637 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 6638 va_end(args);
cea2e8a9
GS		 6639}
6640#endif
6641
954c1994
GS		 6642/*
6643=for apidoc sv_catpvf
6644
6645Processes its arguments like C<sprintf> and appends the formatted output
6646to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
6647typically be called after calling this function to handle 'set' magic.
6648
6649=cut
6650*/
6651
46fc3d4c 6652void
864dbfa3 6653Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 6654{
6655 va_list args;
46fc3d4c 6656 va_start(args, pat);
c5be433b 6657 sv_vcatpvf(sv, pat, &args);
46fc3d4c 6658 va_end(args);
6659}
6660
ef50df4b 6661void
c5be433b
GS		 6662Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6663{
6664 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6665}
6666
954c1994
GS		 6667/*
6668=for apidoc sv_catpvf_mg
6669
6670Like C<sv_catpvf>, but also handles 'set' magic.
6671
6672=cut
6673*/
6674
c5be433b 6675void
864dbfa3 6676Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 6677{
6678 va_list args;
ef50df4b 6679 va_start(args, pat);
c5be433b 6680 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 6681 va_end(args);
c5be433b
GS		 6682}
6683
6684void
6685Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6686{
6687 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 6688 SvSETMAGIC(sv);
6689}
6690
954c1994
GS		 6691/*
6692=for apidoc sv_vsetpvfn
6693
6694Works like C<vcatpvfn> but copies the text into the SV instead of
6695appending it.
6696
6697=cut
6698*/
6699
46fc3d4c 6700void
7d5ea4e7 6701Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6702{
6703 sv_setpvn(sv, "", 0);
7d5ea4e7 6704 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 6705}
6706
954c1994
GS		 6707/*
6708=for apidoc sv_vcatpvfn
6709
6710Processes its arguments like C<vsprintf> and appends the formatted output
6711to an SV. Uses an array of SVs if the C style variable argument list is
6712missing (NULL). When running with taint checks enabled, indicates via
6713C<maybe_tainted> if results are untrustworthy (often due to the use of
6714locales).
6715
6716=cut
6717*/
6718
46fc3d4c 6719void
7d5ea4e7 6720Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6721{
6722 char *p;
6723 char *q;
6724 char *patend;
fc36a67e 6725 STRLEN origlen;
46fc3d4c 6726 I32 svix = 0;
c635e13b 6727 static char nullstr[] = "(null)";
7e2040f0 6728 SV *argsv;
46fc3d4c 6729
6730 /* no matter what, this is a string now */
fc36a67e 6731 (void)SvPV_force(sv, origlen);
46fc3d4c 6732
fc36a67e 6733 /* special-case "", "%s", and "%_" */
46fc3d4c 6734 if (patlen == 0)
6735 return;
fc36a67e 6736 if (patlen == 2 && pat[0] == '%') {
6737 switch (pat[1]) {
6738 case 's':
c635e13b 6739 if (args) {
6740 char *s = va_arg(*args, char*);
6741 sv_catpv(sv, s ? s : nullstr);
6742 }
7e2040f0 6743 else if (svix < svmax) {
fc36a67e 6744 sv_catsv(sv, *svargs);
7e2040f0
GS		 6745 if (DO_UTF8(*svargs))
6746 SvUTF8_on(sv);
6747 }
fc36a67e 6748 return;
6749 case '_':
6750 if (args) {
7e2040f0
GS		 6751 argsv = va_arg(*args, SV*);
6752 sv_catsv(sv, argsv);
6753 if (DO_UTF8(argsv))
6754 SvUTF8_on(sv);
fc36a67e 6755 return;
6756 }
6757 /* See comment on '_' below */
6758 break;
6759 }
46fc3d4c 6760 }
6761
6762 patend = (char*)pat + patlen;
6763 for (p = (char*)pat; p < patend; p = q) {
6764 bool alt = FALSE;
6765 bool left = FALSE;
b22c7a20
GS		 6766 bool vectorize = FALSE;
6767 bool utf = FALSE;
46fc3d4c 6768 char fill = ' ';
6769 char plus = 0;
6770 char intsize = 0;
6771 STRLEN width = 0;
fc36a67e 6772 STRLEN zeros = 0;
46fc3d4c 6773 bool has_precis = FALSE;
6774 STRLEN precis = 0;
7e2040f0 6775 bool is_utf = FALSE;
eb3fce90 6776
46fc3d4c 6777 char esignbuf[4];
ad391ad9 6778 U8 utf8buf[UTF8_MAXLEN+1];
46fc3d4c 6779 STRLEN esignlen = 0;
6780
6781 char *eptr = Nullch;
fc36a67e 6782 STRLEN elen = 0;
089c015b
JH		 6783 /* Times 4: a decimal digit takes more than 3 binary digits.
6784 * NV_DIG: mantissa takes than many decimal digits.
6785 * Plus 32: Playing safe. */
6786 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6787 /* large enough for "%#.#f" --chip */
6788 /* what about long double NVs? --jhi */
b22c7a20
GS		 6789
6790 SV *vecsv;
a05b299f 6791 U8 *vecstr = Null(U8*);
b22c7a20 6792 STRLEN veclen = 0;
46fc3d4c 6793 char c;
6794 int i;
6795 unsigned base;
6796 IV iv;
6797 UV uv;
65202027 6798 NV nv;
46fc3d4c 6799 STRLEN have;
6800 STRLEN need;
6801 STRLEN gap;
b22c7a20
GS		 6802 char *dotstr = ".";
6803 STRLEN dotstrlen = 1;
eb3fce90
JH		 6804 I32 epix = 0; /* explicit parameter index */
6805 I32 ewix = 0; /* explicit width index */
6806 bool asterisk = FALSE;
46fc3d4c 6807
6808 for (q = p; q < patend && *q != '%'; ++q) ;
6809 if (q > p) {
6810 sv_catpvn(sv, p, q - p);
6811 p = q;
6812 }
6813 if (q++ >= patend)
6814 break;
6815
fc36a67e 6816 /* FLAGS */
6817
46fc3d4c 6818 while (*q) {
6819 switch (*q) {
6820 case ' ':
6821 case '+':
6822 plus = *q++;
6823 continue;
6824
6825 case '-':
6826 left = TRUE;
6827 q++;
6828 continue;
6829
6830 case '0':
6831 fill = *q++;
6832 continue;
6833
6834 case '#':
6835 alt = TRUE;
6836 q++;
6837 continue;
6838
b22c7a20
GS		 6839 case '*': /* printf("%*vX",":",$ipv6addr) */
6840 if (q[1] != 'v')
6841 break;
6842 q++;
6843 if (args)
6844 vecsv = va_arg(*args, SV*);
6845 else if (svix < svmax)
6846 vecsv = svargs[svix++];
9c3dd3fe
GS		 6847 else
6848 continue;
b22c7a20
GS		 6849 dotstr = SvPVx(vecsv,dotstrlen);
6850 if (DO_UTF8(vecsv))
6851 is_utf = TRUE;
6852 /* FALL THROUGH */
6853
6854 case 'v':
6855 vectorize = TRUE;
6856 q++;
b22c7a20
GS		 6857 continue;
6858
fc36a67e 6859 default:
6860 break;
6861 }
6862 break;
6863 }
46fc3d4c 6864
fc36a67e 6865 /* WIDTH */
6866
eb3fce90
JH		 6867 scanwidth:
6868
6869 if (*q == '*') {
6870 if (asterisk)
6871 goto unknown;
6872 asterisk = TRUE;
6873 q++;
6874 }
6875
fc36a67e 6876 switch (*q) {
6877 case '1': case '2': case '3':
6878 case '4': case '5': case '6':
6879 case '7': case '8': case '9':
6880 width = 0;
6881 while (isDIGIT(*q))
6882 width = width * 10 + (*q++ - '0');
eb3fce90
JH		 6883 if (*q == '$') {
6884 if (asterisk && ewix == 0) {
6885 ewix = width;
6886 width = 0;
6887 q++;
6888 goto scanwidth;
6889 } else if (epix == 0) {
6890 epix = width;
6891 width = 0;
6892 q++;
6893 goto scanwidth;
6894 } else
6895 goto unknown;
6896 }
6897 }
fc36a67e 6898
eb3fce90 6899 if (asterisk) {
fc36a67e 6900 if (args)
6901 i = va_arg(*args, int);
6902 else
eb3fce90
JH		 6903 i = (ewix ? ewix <= svmax : svix < svmax) ?
6904 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6905 left |= (i < 0);
6906 width = (i < 0) ? -i : i;
fc36a67e 6907 }
6908
6909 /* PRECISION */
46fc3d4c 6910
fc36a67e 6911 if (*q == '.') {
6912 q++;
6913 if (*q == '*') {
46fc3d4c 6914 if (args)
6915 i = va_arg(*args, int);
6916 else
eb3fce90
JH		 6917 i = (ewix ? ewix <= svmax : svix < svmax)
6918 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6919 precis = (i < 0) ? 0 : i;
46fc3d4c 6920 q++;
fc36a67e 6921 }
6922 else {
6923 precis = 0;
6924 while (isDIGIT(*q))
6925 precis = precis * 10 + (*q++ - '0');
6926 }
6927 has_precis = TRUE;
6928 }
46fc3d4c 6929
bb2899ba
GS		 6930 if (vectorize) {
6931 if (args) {
6932 vecsv = va_arg(*args, SV*);
6933 vecstr = (U8*)SvPVx(vecsv,veclen);
6934 utf = DO_UTF8(vecsv);
6935 }
eb3fce90
JH		 6936 else if (epix ? epix <= svmax : svix < svmax) {
6937 vecsv = svargs[epix ? epix-1 : svix++];
bb2899ba
GS		 6938 vecstr = (U8*)SvPVx(vecsv,veclen);
6939 utf = DO_UTF8(vecsv);
6940 }
6941 else {
6942 vecstr = (U8*)"";
6943 veclen = 0;
6944 }
6945 }
6946
fc36a67e 6947 /* SIZE */
46fc3d4c 6948
fc36a67e 6949 switch (*q) {
e5c81feb 6950#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6f9bb7fd 6951 case 'L': /* Ld */
e5c81feb
JH		 6952 /* FALL THROUGH */
6953#endif
6954#ifdef HAS_QUAD
6f9bb7fd
GS		 6955 case 'q': /* qd */
6956 intsize = 'q';
6957 q++;
6958 break;
6959#endif
fc36a67e 6960 case 'l':
e5c81feb
JH		 6961#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6962 if (*(q + 1) == 'l') { /* lld, llf */
fc36a67e 6963 intsize = 'q';
6964 q += 2;
46fc3d4c 6965 break;
cf2093f6 6966 }
fc36a67e 6967#endif
6f9bb7fd 6968 /* FALL THROUGH */
fc36a67e 6969 case 'h':
cf2093f6 6970 /* FALL THROUGH */
fc36a67e 6971 case 'V':
6972 intsize = *q++;
46fc3d4c 6973 break;
6974 }
6975
fc36a67e 6976 /* CONVERSION */
6977
46fc3d4c 6978 switch (c = *q++) {
6979
6980 /* STRINGS */
6981
6982 case '%':
6983 eptr = q - 1;
6984 elen = 1;
6985 goto string;
6986
6987 case 'c':
7e2040f0
GS		 6988 if (args)
6989 uv = va_arg(*args, int);
6990 else
eb3fce90
JH		 6991 uv = (epix ? epix <= svmax : svix < svmax) ?
6992 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
3969a896 6993 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6994 eptr = (char*)utf8buf;
6995 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6996 is_utf = TRUE;
6997 }
6998 else {
6999 c = (char)uv;
7000 eptr = &c;
7001 elen = 1;
a0ed51b3 7002 }
46fc3d4c 7003 goto string;
7004
46fc3d4c 7005 case 's':
7006 if (args) {
fc36a67e 7007 eptr = va_arg(*args, char*);
c635e13b 7008 if (eptr)
1d7c1841
GS		 7009#ifdef MACOS_TRADITIONAL
7010 /* On MacOS, %#s format is used for Pascal strings */
7011 if (alt)
7012 elen = *eptr++;
7013 else
7014#endif
c635e13b 7015 elen = strlen(eptr);
7016 else {
7017 eptr = nullstr;
7018 elen = sizeof nullstr - 1;
7019 }
46fc3d4c 7020 }
eb3fce90
JH		 7021 else if (epix ? epix <= svmax : svix < svmax) {
7022 argsv = svargs[epix ? epix-1 : svix++];
7e2040f0
GS		 7023 eptr = SvPVx(argsv, elen);
7024 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 7025 if (has_precis && precis < elen) {
7026 I32 p = precis;
7e2040f0 7027 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 7028 precis = p;
7029 }
7030 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 7031 width += elen - sv_len_utf8(argsv);
a0ed51b3 7032 }
7e2040f0 7033 is_utf = TRUE;
a0ed51b3
LW		 7034 }
7035 }
46fc3d4c 7036 goto string;
7037
fc36a67e 7038 case '_':
7039 /*
7040 * The "%_" hack might have to be changed someday,
7041 * if ISO or ANSI decide to use '_' for something.
7042 * So we keep it hidden from users' code.
7043 */
7044 if (!args)
7045 goto unknown;
7e2040f0
GS		 7046 argsv = va_arg(*args,SV*);
7047 eptr = SvPVx(argsv, elen);
7048 if (DO_UTF8(argsv))
7049 is_utf = TRUE;
fc36a67e 7050
46fc3d4c 7051 string:
b22c7a20 7052 vectorize = FALSE;
46fc3d4c 7053 if (has_precis && elen > precis)
7054 elen = precis;
7055 break;
7056
7057 /* INTEGERS */
7058
fc36a67e 7059 case 'p':
c2e66d9e
GS		 7060 if (alt)
7061 goto unknown;
fc36a67e 7062 if (args)
56431972 7063 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 7064 else
eb3fce90
JH		 7065 uv = (epix ? epix <= svmax : svix < svmax) ?
7066 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
fc36a67e 7067 base = 16;
7068 goto integer;
7069
46fc3d4c 7070 case 'D':
29fe7a80 7071#ifdef IV_IS_QUAD
22f3ae8c 7072 intsize = 'q';
29fe7a80 7073#else
46fc3d4c 7074 intsize = 'l';
29fe7a80 7075#endif
46fc3d4c 7076 /* FALL THROUGH */
7077 case 'd':
7078 case 'i':
b22c7a20 7079 if (vectorize) {
ba210ebe 7080 STRLEN ulen;
b22c7a20
GS		 7081 if (!veclen) {
7082 vectorize = FALSE;
7083 break;
7084 }
7085 if (utf)
dcad2880 7086 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 7087 else {
a05b299f 7088 iv = *vecstr;
b22c7a20
GS		 7089 ulen = 1;
7090 }
7091 vecstr += ulen;
7092 veclen -= ulen;
7093 }
7094 else if (args) {
46fc3d4c 7095 switch (intsize) {
7096 case 'h': iv = (short)va_arg(*args, int); break;
7097 default: iv = va_arg(*args, int); break;
7098 case 'l': iv = va_arg(*args, long); break;
fc36a67e 7099 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 7100#ifdef HAS_QUAD
7101 case 'q': iv = va_arg(*args, Quad_t); break;
7102#endif
46fc3d4c 7103 }
7104 }
7105 else {
eb3fce90
JH		 7106 iv = (epix ? epix <= svmax : svix < svmax) ?
7107 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 7108 switch (intsize) {
7109 case 'h': iv = (short)iv; break;
be28567c 7110 default: break;
46fc3d4c 7111 case 'l': iv = (long)iv; break;
fc36a67e 7112 case 'V': break;
cf2093f6
JH		 7113#ifdef HAS_QUAD
7114 case 'q': iv = (Quad_t)iv; break;
7115#endif
46fc3d4c 7116 }
7117 }
7118 if (iv >= 0) {
7119 uv = iv;
7120 if (plus)
7121 esignbuf[esignlen++] = plus;
7122 }
7123 else {
7124 uv = -iv;
7125 esignbuf[esignlen++] = '-';
7126 }
7127 base = 10;
7128 goto integer;
7129
fc36a67e 7130 case 'U':
29fe7a80 7131#ifdef IV_IS_QUAD
22f3ae8c 7132 intsize = 'q';
29fe7a80 7133#else
fc36a67e 7134 intsize = 'l';
29fe7a80 7135#endif
fc36a67e 7136 /* FALL THROUGH */
7137 case 'u':
7138 base = 10;
7139 goto uns_integer;
7140
4f19785b
WSI		 7141 case 'b':
7142 base = 2;
7143 goto uns_integer;
7144
46fc3d4c 7145 case 'O':
29fe7a80 7146#ifdef IV_IS_QUAD
22f3ae8c 7147 intsize = 'q';
29fe7a80 7148#else
46fc3d4c 7149 intsize = 'l';
29fe7a80 7150#endif
46fc3d4c 7151 /* FALL THROUGH */
7152 case 'o':
7153 base = 8;
7154 goto uns_integer;
7155
7156 case 'X':
46fc3d4c 7157 case 'x':
7158 base = 16;
46fc3d4c 7159
7160 uns_integer:
b22c7a20 7161 if (vectorize) {
ba210ebe 7162 STRLEN ulen;
b22c7a20
GS		 7163 vector:
7164 if (!veclen) {
7165 vectorize = FALSE;
7166 break;
7167 }
7168 if (utf)
dcad2880 7169 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 7170 else {
a05b299f 7171 uv = *vecstr;
b22c7a20
GS		 7172 ulen = 1;
7173 }
7174 vecstr += ulen;
7175 veclen -= ulen;
7176 }
7177 else if (args) {
46fc3d4c 7178 switch (intsize) {
7179 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
7180 default: uv = va_arg(*args, unsigned); break;
7181 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 7182 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 7183#ifdef HAS_QUAD
7184 case 'q': uv = va_arg(*args, Quad_t); break;
7185#endif
46fc3d4c 7186 }
7187 }
7188 else {
eb3fce90
JH		 7189 uv = (epix ? epix <= svmax : svix < svmax) ?
7190 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 7191 switch (intsize) {
7192 case 'h': uv = (unsigned short)uv; break;
be28567c 7193 default: break;
46fc3d4c 7194 case 'l': uv = (unsigned long)uv; break;
fc36a67e 7195 case 'V': break;
cf2093f6
JH		 7196#ifdef HAS_QUAD
7197 case 'q': uv = (Quad_t)uv; break;
7198#endif
46fc3d4c 7199 }
7200 }
7201
7202 integer:
46fc3d4c 7203 eptr = ebuf + sizeof ebuf;
fc36a67e 7204 switch (base) {
7205 unsigned dig;
7206 case 16:
c10ed8b9
HS		 7207 if (!uv)
7208 alt = FALSE;
1d7c1841
GS		 7209 p = (char*)((c == 'X')
7210 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 7211 do {
7212 dig = uv & 15;
7213 *--eptr = p[dig];
7214 } while (uv >>= 4);
7215 if (alt) {
46fc3d4c 7216 esignbuf[esignlen++] = '0';
fc36a67e 7217 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 7218 }
fc36a67e 7219 break;
7220 case 8:
7221 do {
7222 dig = uv & 7;
7223 *--eptr = '0' + dig;
7224 } while (uv >>= 3);
7225 if (alt && *eptr != '0')
7226 *--eptr = '0';
7227 break;
4f19785b
WSI		 7228 case 2:
7229 do {
7230 dig = uv & 1;
7231 *--eptr = '0' + dig;
7232 } while (uv >>= 1);
eda88b6d
JH		 7233 if (alt) {
7234 esignbuf[esignlen++] = '0';
7481bb52 7235 esignbuf[esignlen++] = 'b';
eda88b6d 7236 }
4f19785b 7237 break;
fc36a67e 7238 default: /* it had better be ten or less */
6bc102ca 7239#if defined(PERL_Y2KWARN)
e476b1b5 7240 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 7241 STRLEN n;
7242 char *s = SvPV(sv,n);
7243 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
7244 && (n == 2 || !isDIGIT(s[n-3])))
7245 {
e476b1b5 7246 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 7247 "Possible Y2K bug: %%%c %s",
7248 c, "format string following '19'");
7249 }
7250 }
7251#endif
fc36a67e 7252 do {
7253 dig = uv % base;
7254 *--eptr = '0' + dig;
7255 } while (uv /= base);
7256 break;
46fc3d4c 7257 }
7258 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 7259 if (has_precis) {
7260 if (precis > elen)
7261 zeros = precis - elen;
7262 else if (precis == 0 && elen == 1 && *eptr == '0')
7263 elen = 0;
7264 }
46fc3d4c 7265 break;
7266
7267 /* FLOATING POINT */
7268
fc36a67e 7269 case 'F':
7270 c = 'f'; /* maybe %F isn't supported here */
7271 /* FALL THROUGH */
46fc3d4c 7272 case 'e': case 'E':
fc36a67e 7273 case 'f':
46fc3d4c 7274 case 'g': case 'G':
7275
7276 /* This is evil, but floating point is even more evil */
7277
b22c7a20 7278 vectorize = FALSE;
fc36a67e 7279 if (args)
65202027 7280 nv = va_arg(*args, NV);
fc36a67e 7281 else
eb3fce90
JH		 7282 nv = (epix ? epix <= svmax : svix < svmax) ?
7283 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
fc36a67e 7284
7285 need = 0;
7286 if (c != 'e' && c != 'E') {
7287 i = PERL_INT_MIN;
73b309ea 7288 (void)Perl_frexp(nv, &i);
fc36a67e 7289 if (i == PERL_INT_MIN)
cea2e8a9 7290 Perl_die(aTHX_ "panic: frexp");
c635e13b 7291 if (i > 0)
fc36a67e 7292 need = BIT_DIGITS(i);
7293 }
7294 need += has_precis ? precis : 6; /* known default */
7295 if (need < width)
7296 need = width;
7297
46fc3d4c 7298 need += 20; /* fudge factor */
80252599
GS		 7299 if (PL_efloatsize < need) {
7300 Safefree(PL_efloatbuf);
7301 PL_efloatsize = need + 20; /* more fudge */
7302 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 7303 PL_efloatbuf[0] = '\0';
46fc3d4c 7304 }
7305
7306 eptr = ebuf + sizeof ebuf;
7307 *--eptr = '\0';
7308 *--eptr = c;
e5c81feb 7309#if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
cf2093f6 7310 {
e5c81feb
JH		 7311 /* Copy the one or more characters in a long double
7312 * format before the 'base' ([efgEFG]) character to
7313 * the format string. */
7314 static char const prifldbl[] = PERL_PRIfldbl;
7315 char const *p = prifldbl + sizeof(prifldbl) - 3;
7316 while (p >= prifldbl) { *--eptr = *p--; }
cf2093f6 7317 }
65202027 7318#endif
46fc3d4c 7319 if (has_precis) {
7320 base = precis;
7321 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7322 *--eptr = '.';
7323 }
7324 if (width) {
7325 base = width;
7326 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7327 }
7328 if (fill == '0')
7329 *--eptr = fill;
84902520
TB		 7330 if (left)
7331 *--eptr = '-';
46fc3d4c 7332 if (plus)
7333 *--eptr = plus;
7334 if (alt)
7335 *--eptr = '#';
7336 *--eptr = '%';
7337
ff9121f8
JH		 7338 /* No taint. Otherwise we are in the strange situation
7339 * where printf() taints but print($float) doesn't.
bda0f7a5 7340 * --jhi */
dd8482fc 7341 (void)sprintf(PL_efloatbuf, eptr, nv);
8af02333 7342
80252599
GS		 7343 eptr = PL_efloatbuf;
7344 elen = strlen(PL_efloatbuf);
46fc3d4c 7345 break;
7346
fc36a67e 7347 /* SPECIAL */
7348
7349 case 'n':
b22c7a20 7350 vectorize = FALSE;
fc36a67e 7351 i = SvCUR(sv) - origlen;
7352 if (args) {
c635e13b 7353 switch (intsize) {
7354 case 'h': *(va_arg(*args, short*)) = i; break;
7355 default: *(va_arg(*args, int*)) = i; break;
7356 case 'l': *(va_arg(*args, long*)) = i; break;
7357 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 7358#ifdef HAS_QUAD
7359 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
7360#endif
c635e13b 7361 }
fc36a67e 7362 }
eb3fce90
JH		 7363 else if (epix ? epix <= svmax : svix < svmax)
7364 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
fc36a67e 7365 continue; /* not "break" */
7366
7367 /* UNKNOWN */
7368
46fc3d4c 7369 default:
fc36a67e 7370 unknown:
b22c7a20 7371 vectorize = FALSE;
599cee73 7372 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 7373 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 7374 SV *msg = sv_newmortal();
cea2e8a9 7375 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 7376 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 7377 if (c) {
0f4b6630 7378 if (isPRINT(c))
1c846c1f 7379 Perl_sv_catpvf(aTHX_ msg,
0f4b6630
JH		 7380 "\"%%%c\"", c & 0xFF);
7381 else
7382 Perl_sv_catpvf(aTHX_ msg,
57def98f 7383 "\"%%\\%03"UVof"\"",
0f4b6630 7384 (UV)c & 0xFF);
0f4b6630 7385 } else
c635e13b 7386 sv_catpv(msg, "end of string");
894356b3 7387 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 7388 }
fb73857a 7389
7390 /* output mangled stuff ... */
7391 if (c == '\0')
7392 --q;
46fc3d4c 7393 eptr = p;
7394 elen = q - p;
fb73857a 7395
7396 /* ... right here, because formatting flags should not apply */
7397 SvGROW(sv, SvCUR(sv) + elen + 1);
7398 p = SvEND(sv);
7399 memcpy(p, eptr, elen);
7400 p += elen;
7401 *p = '\0';
7402 SvCUR(sv) = p - SvPVX(sv);
7403 continue; /* not "break" */
46fc3d4c 7404 }
7405
fc36a67e 7406 have = esignlen + zeros + elen;
46fc3d4c 7407 need = (have > width ? have : width);
7408 gap = need - have;
7409
b22c7a20 7410 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 7411 p = SvEND(sv);
7412 if (esignlen && fill == '0') {
7413 for (i = 0; i < esignlen; i++)
7414 *p++ = esignbuf[i];
7415 }
7416 if (gap && !left) {
7417 memset(p, fill, gap);
7418 p += gap;
7419 }
7420 if (esignlen && fill != '0') {
7421 for (i = 0; i < esignlen; i++)
7422 *p++ = esignbuf[i];
7423 }
fc36a67e 7424 if (zeros) {
7425 for (i = zeros; i; i--)
7426 *p++ = '0';
7427 }
46fc3d4c 7428 if (elen) {
7429 memcpy(p, eptr, elen);
7430 p += elen;
7431 }
7432 if (gap && left) {
7433 memset(p, ' ', gap);
7434 p += gap;
7435 }
b22c7a20
GS		 7436 if (vectorize) {
7437 if (veclen) {
7438 memcpy(p, dotstr, dotstrlen);
7439 p += dotstrlen;
7440 }
7441 else
7442 vectorize = FALSE; /* done iterating over vecstr */
7443 }
7e2040f0
GS		 7444 if (is_utf)
7445 SvUTF8_on(sv);
46fc3d4c 7446 *p = '\0';
7447 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 7448 if (vectorize) {
7449 esignlen = 0;
7450 goto vector;
7451 }
46fc3d4c 7452 }
7453}
51371543 7454
1d7c1841
GS		 7455#if defined(USE_ITHREADS)
7456
7457#if defined(USE_THREADS)
7458# include "error: USE_THREADS and USE_ITHREADS are incompatible"
7459#endif
7460
1d7c1841
GS		 7461#ifndef GpREFCNT_inc
7462# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
7463#endif
7464
7465
7466#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
7467#define av_dup(s) (AV*)sv_dup((SV*)s)
7468#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
7469#define hv_dup(s) (HV*)sv_dup((SV*)s)
7470#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
7471#define cv_dup(s) (CV*)sv_dup((SV*)s)
7472#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
7473#define io_dup(s) (IO*)sv_dup((SV*)s)
7474#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
7475#define gv_dup(s) (GV*)sv_dup((SV*)s)
7476#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
7477#define SAVEPV(p) (p ? savepv(p) : Nullch)
7478#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
7479
7480REGEXP *
7481Perl_re_dup(pTHX_ REGEXP *r)
7482{
7483 /* XXX fix when pmop->op_pmregexp becomes shared */
7484 return ReREFCNT_inc(r);
7485}
7486
7487PerlIO *
7488Perl_fp_dup(pTHX_ PerlIO *fp, char type)
7489{
7490 PerlIO *ret;
7491 if (!fp)
7492 return (PerlIO*)NULL;
7493
7494 /* look for it in the table first */
7495 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
7496 if (ret)
7497 return ret;
7498
7499 /* create anew and remember what it is */
5f1a76d0 7500 ret = PerlIO_fdupopen(aTHX_ fp);
1d7c1841
GS		 7501 ptr_table_store(PL_ptr_table, fp, ret);
7502 return ret;
7503}
7504
7505DIR *
7506Perl_dirp_dup(pTHX_ DIR *dp)
7507{
7508 if (!dp)
7509 return (DIR*)NULL;
7510 /* XXX TODO */
7511 return dp;
7512}
7513
7514GP *
7515Perl_gp_dup(pTHX_ GP *gp)
7516{
7517 GP *ret;
7518 if (!gp)
7519 return (GP*)NULL;
7520 /* look for it in the table first */
7521 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
7522 if (ret)
7523 return ret;
7524
7525 /* create anew and remember what it is */
7526 Newz(0, ret, 1, GP);
7527 ptr_table_store(PL_ptr_table, gp, ret);
7528
7529 /* clone */
7530 ret->gp_refcnt = 0; /* must be before any other dups! */
7531 ret->gp_sv = sv_dup_inc(gp->gp_sv);
7532 ret->gp_io = io_dup_inc(gp->gp_io);
7533 ret->gp_form = cv_dup_inc(gp->gp_form);
7534 ret->gp_av = av_dup_inc(gp->gp_av);
7535 ret->gp_hv = hv_dup_inc(gp->gp_hv);
7536 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
7537 ret->gp_cv = cv_dup_inc(gp->gp_cv);
7538 ret->gp_cvgen = gp->gp_cvgen;
7539 ret->gp_flags = gp->gp_flags;
7540 ret->gp_line = gp->gp_line;
7541 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
7542 return ret;
7543}
7544
7545MAGIC *
7546Perl_mg_dup(pTHX_ MAGIC *mg)
7547{
7548 MAGIC *mgret = (MAGIC*)NULL;
7549 MAGIC *mgprev;
7550 if (!mg)
7551 return (MAGIC*)NULL;
7552 /* look for it in the table first */
7553 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
7554 if (mgret)
7555 return mgret;
7556
7557 for (; mg; mg = mg->mg_moremagic) {
7558 MAGIC *nmg;
7559 Newz(0, nmg, 1, MAGIC);
7560 if (!mgret)
7561 mgret = nmg;
7562 else
7563 mgprev->mg_moremagic = nmg;
7564 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
7565 nmg->mg_private = mg->mg_private;
7566 nmg->mg_type = mg->mg_type;
7567 nmg->mg_flags = mg->mg_flags;
7568 if (mg->mg_type == 'r') {
7569 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
7570 }
7571 else {
7572 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
7573 ? sv_dup_inc(mg->mg_obj)
7574 : sv_dup(mg->mg_obj);
7575 }
7576 nmg->mg_len = mg->mg_len;
7577 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
7578 if (mg->mg_ptr && mg->mg_type != 'g') {
7579 if (mg->mg_len >= 0) {
7580 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
7581 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
7582 AMT *amtp = (AMT*)mg->mg_ptr;
7583 AMT *namtp = (AMT*)nmg->mg_ptr;
7584 I32 i;
7585 for (i = 1; i < NofAMmeth; i++) {
7586 namtp->table[i] = cv_dup_inc(amtp->table[i]);
7587 }
7588 }
7589 }
7590 else if (mg->mg_len == HEf_SVKEY)
7591 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
7592 }
7593 mgprev = nmg;
7594 }
7595 return mgret;
7596}
7597
7598PTR_TBL_t *
7599Perl_ptr_table_new(pTHX)
7600{
7601 PTR_TBL_t *tbl;
7602 Newz(0, tbl, 1, PTR_TBL_t);
7603 tbl->tbl_max = 511;
7604 tbl->tbl_items = 0;
7605 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
7606 return tbl;
7607}
7608
7609void *
7610Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
7611{
7612 PTR_TBL_ENT_t *tblent;
d2a79402 7613 UV hash = PTR2UV(sv);
1d7c1841
GS		 7614 assert(tbl);
7615 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
7616 for (; tblent; tblent = tblent->next) {
7617 if (tblent->oldval == sv)
7618 return tblent->newval;
7619 }
7620 return (void*)NULL;
7621}
7622
7623void
7624Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
7625{
7626 PTR_TBL_ENT_t *tblent, **otblent;
7627 /* XXX this may be pessimal on platforms where pointers aren't good
7628 * hash values e.g. if they grow faster in the most significant
7629 * bits */
d2a79402 7630 UV hash = PTR2UV(oldv);
1d7c1841
GS		 7631 bool i = 1;
7632
7633 assert(tbl);
7634 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
7635 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
7636 if (tblent->oldval == oldv) {
7637 tblent->newval = newv;
7638 tbl->tbl_items++;
7639 return;
7640 }
7641 }
7642 Newz(0, tblent, 1, PTR_TBL_ENT_t);
7643 tblent->oldval = oldv;
7644 tblent->newval = newv;
7645 tblent->next = *otblent;
7646 *otblent = tblent;
7647 tbl->tbl_items++;
7648 if (i && tbl->tbl_items > tbl->tbl_max)
7649 ptr_table_split(tbl);
7650}
7651
7652void
7653Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
7654{
7655 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
7656 UV oldsize = tbl->tbl_max + 1;
7657 UV newsize = oldsize * 2;
7658 UV i;
7659
7660 Renew(ary, newsize, PTR_TBL_ENT_t*);
7661 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
7662 tbl->tbl_max = --newsize;
7663 tbl->tbl_ary = ary;
7664 for (i=0; i < oldsize; i++, ary++) {
7665 PTR_TBL_ENT_t **curentp, **entp, *ent;
7666 if (!*ary)
7667 continue;
7668 curentp = ary + oldsize;
7669 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 7670 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 7671 *entp = ent->next;
7672 ent->next = *curentp;
7673 *curentp = ent;
7674 continue;
7675 }
7676 else
7677 entp = &ent->next;
7678 }
7679 }
7680}
7681
7682#ifdef DEBUGGING
7683char *PL_watch_pvx;
7684#endif
7685
7686SV *
7687Perl_sv_dup(pTHX_ SV *sstr)
7688{
1d7c1841
GS		 7689 SV *dstr;
7690
7691 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7692 return Nullsv;
7693 /* look for it in the table first */
7694 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7695 if (dstr)
7696 return dstr;
7697
7698 /* create anew and remember what it is */
7699 new_SV(dstr);
7700 ptr_table_store(PL_ptr_table, sstr, dstr);
7701
7702 /* clone */
7703 SvFLAGS(dstr) = SvFLAGS(sstr);
7704 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7705 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7706
7707#ifdef DEBUGGING
7708 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7709 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7710 PL_watch_pvx, SvPVX(sstr));
7711#endif
7712
7713 switch (SvTYPE(sstr)) {
7714 case SVt_NULL:
7715 SvANY(dstr) = NULL;
7716 break;
7717 case SVt_IV:
7718 SvANY(dstr) = new_XIV();
7719 SvIVX(dstr) = SvIVX(sstr);
7720 break;
7721 case SVt_NV:
7722 SvANY(dstr) = new_XNV();
7723 SvNVX(dstr) = SvNVX(sstr);
7724 break;
7725 case SVt_RV:
7726 SvANY(dstr) = new_XRV();
7727 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7728 break;
7729 case SVt_PV:
7730 SvANY(dstr) = new_XPV();
7731 SvCUR(dstr) = SvCUR(sstr);
7732 SvLEN(dstr) = SvLEN(sstr);
7733 if (SvROK(sstr))
7734 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7735 else if (SvPVX(sstr) && SvLEN(sstr))
7736 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7737 else
7738 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7739 break;
7740 case SVt_PVIV:
7741 SvANY(dstr) = new_XPVIV();
7742 SvCUR(dstr) = SvCUR(sstr);
7743 SvLEN(dstr) = SvLEN(sstr);
7744 SvIVX(dstr) = SvIVX(sstr);
7745 if (SvROK(sstr))
7746 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7747 else if (SvPVX(sstr) && SvLEN(sstr))
7748 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7749 else
7750 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7751 break;
7752 case SVt_PVNV:
7753 SvANY(dstr) = new_XPVNV();
7754 SvCUR(dstr) = SvCUR(sstr);
7755 SvLEN(dstr) = SvLEN(sstr);
7756 SvIVX(dstr) = SvIVX(sstr);
7757 SvNVX(dstr) = SvNVX(sstr);
7758 if (SvROK(sstr))
7759 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7760 else if (SvPVX(sstr) && SvLEN(sstr))
7761 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7762 else
7763 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7764 break;
7765 case SVt_PVMG:
7766 SvANY(dstr) = new_XPVMG();
7767 SvCUR(dstr) = SvCUR(sstr);
7768 SvLEN(dstr) = SvLEN(sstr);
7769 SvIVX(dstr) = SvIVX(sstr);
7770 SvNVX(dstr) = SvNVX(sstr);
7771 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7772 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7773 if (SvROK(sstr))
7774 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7775 else if (SvPVX(sstr) && SvLEN(sstr))
7776 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7777 else
7778 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7779 break;
7780 case SVt_PVBM:
7781 SvANY(dstr) = new_XPVBM();
7782 SvCUR(dstr) = SvCUR(sstr);
7783 SvLEN(dstr) = SvLEN(sstr);
7784 SvIVX(dstr) = SvIVX(sstr);
7785 SvNVX(dstr) = SvNVX(sstr);
7786 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7787 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7788 if (SvROK(sstr))
7789 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7790 else if (SvPVX(sstr) && SvLEN(sstr))
7791 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7792 else
7793 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7794 BmRARE(dstr) = BmRARE(sstr);
7795 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7796 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7797 break;
7798 case SVt_PVLV:
7799 SvANY(dstr) = new_XPVLV();
7800 SvCUR(dstr) = SvCUR(sstr);
7801 SvLEN(dstr) = SvLEN(sstr);
7802 SvIVX(dstr) = SvIVX(sstr);
7803 SvNVX(dstr) = SvNVX(sstr);
7804 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7805 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7806 if (SvROK(sstr))
7807 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7808 else if (SvPVX(sstr) && SvLEN(sstr))
7809 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7810 else
7811 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7812 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7813 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7814 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7815 LvTYPE(dstr) = LvTYPE(sstr);
7816 break;
7817 case SVt_PVGV:
7818 SvANY(dstr) = new_XPVGV();
7819 SvCUR(dstr) = SvCUR(sstr);
7820 SvLEN(dstr) = SvLEN(sstr);
7821 SvIVX(dstr) = SvIVX(sstr);
7822 SvNVX(dstr) = SvNVX(sstr);
7823 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7824 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7825 if (SvROK(sstr))
7826 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7827 else if (SvPVX(sstr) && SvLEN(sstr))
7828 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7829 else
7830 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7831 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7832 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7833 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7834 GvFLAGS(dstr) = GvFLAGS(sstr);
7835 GvGP(dstr) = gp_dup(GvGP(sstr));
7836 (void)GpREFCNT_inc(GvGP(dstr));
7837 break;
7838 case SVt_PVIO:
7839 SvANY(dstr) = new_XPVIO();
7840 SvCUR(dstr) = SvCUR(sstr);
7841 SvLEN(dstr) = SvLEN(sstr);
7842 SvIVX(dstr) = SvIVX(sstr);
7843 SvNVX(dstr) = SvNVX(sstr);
7844 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7845 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7846 if (SvROK(sstr))
7847 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7848 else if (SvPVX(sstr) && SvLEN(sstr))
7849 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7850 else
7851 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7852 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7853 if (IoOFP(sstr) == IoIFP(sstr))
7854 IoOFP(dstr) = IoIFP(dstr);
7855 else
7856 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7857 /* PL_rsfp_filters entries have fake IoDIRP() */
7858 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7859 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7860 else
7861 IoDIRP(dstr) = IoDIRP(sstr);
7862 IoLINES(dstr) = IoLINES(sstr);
7863 IoPAGE(dstr) = IoPAGE(sstr);
7864 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7865 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7866 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7867 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7868 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7869 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7870 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7871 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7872 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7873 IoTYPE(dstr) = IoTYPE(sstr);
7874 IoFLAGS(dstr) = IoFLAGS(sstr);
7875 break;
7876 case SVt_PVAV:
7877 SvANY(dstr) = new_XPVAV();
7878 SvCUR(dstr) = SvCUR(sstr);
7879 SvLEN(dstr) = SvLEN(sstr);
7880 SvIVX(dstr) = SvIVX(sstr);
7881 SvNVX(dstr) = SvNVX(sstr);
7882 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7883 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7884 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7885 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7886 if (AvARRAY((AV*)sstr)) {
7887 SV **dst_ary, **src_ary;
7888 SSize_t items = AvFILLp((AV*)sstr) + 1;
7889
7890 src_ary = AvARRAY((AV*)sstr);
7891 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7892 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7893 SvPVX(dstr) = (char*)dst_ary;
7894 AvALLOC((AV*)dstr) = dst_ary;
7895 if (AvREAL((AV*)sstr)) {
7896 while (items-- > 0)
7897 *dst_ary++ = sv_dup_inc(*src_ary++);
7898 }
7899 else {
7900 while (items-- > 0)
7901 *dst_ary++ = sv_dup(*src_ary++);
7902 }
7903 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7904 while (items-- > 0) {
7905 *dst_ary++ = &PL_sv_undef;
7906 }
7907 }
7908 else {
7909 SvPVX(dstr) = Nullch;
7910 AvALLOC((AV*)dstr) = (SV**)NULL;
7911 }
7912 break;
7913 case SVt_PVHV:
7914 SvANY(dstr) = new_XPVHV();
7915 SvCUR(dstr) = SvCUR(sstr);
7916 SvLEN(dstr) = SvLEN(sstr);
7917 SvIVX(dstr) = SvIVX(sstr);
7918 SvNVX(dstr) = SvNVX(sstr);
7919 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7920 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7921 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7922 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7923 STRLEN i = 0;
7924 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7925 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7926 Newz(0, dxhv->xhv_array,
7927 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7928 while (i <= sxhv->xhv_max) {
7929 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7930 !!HvSHAREKEYS(sstr));
7931 ++i;
7932 }
7933 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7934 }
7935 else {
7936 SvPVX(dstr) = Nullch;
7937 HvEITER((HV*)dstr) = (HE*)NULL;
7938 }
7939 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7940 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7941 break;
7942 case SVt_PVFM:
7943 SvANY(dstr) = new_XPVFM();
7944 FmLINES(dstr) = FmLINES(sstr);
7945 goto dup_pvcv;
7946 /* NOTREACHED */
7947 case SVt_PVCV:
7948 SvANY(dstr) = new_XPVCV();
7949dup_pvcv:
7950 SvCUR(dstr) = SvCUR(sstr);
7951 SvLEN(dstr) = SvLEN(sstr);
7952 SvIVX(dstr) = SvIVX(sstr);
7953 SvNVX(dstr) = SvNVX(sstr);
7954 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7955 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7956 if (SvPVX(sstr) && SvLEN(sstr))
7957 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7958 else
7959 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7960 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7961 CvSTART(dstr) = CvSTART(sstr);
7962 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7963 CvXSUB(dstr) = CvXSUB(sstr);
7964 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7965 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7966 CvDEPTH(dstr) = CvDEPTH(sstr);
7967 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7968 /* XXX padlists are real, but pretend to be not */
7969 AvREAL_on(CvPADLIST(sstr));
7970 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7971 AvREAL_off(CvPADLIST(sstr));
7972 AvREAL_off(CvPADLIST(dstr));
7973 }
7974 else
7975 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7976 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7977 CvFLAGS(dstr) = CvFLAGS(sstr);
7978 break;
7979 default:
7980 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7981 break;
7982 }
7983
7984 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7985 ++PL_sv_objcount;
7986
7987 return dstr;
7988}
7989
7990PERL_CONTEXT *
7991Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7992{
7993 PERL_CONTEXT *ncxs;
7994
7995 if (!cxs)
7996 return (PERL_CONTEXT*)NULL;
7997
7998 /* look for it in the table first */
7999 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
8000 if (ncxs)
8001 return ncxs;
8002
8003 /* create anew and remember what it is */
8004 Newz(56, ncxs, max + 1, PERL_CONTEXT);
8005 ptr_table_store(PL_ptr_table, cxs, ncxs);
8006
8007 while (ix >= 0) {
8008 PERL_CONTEXT *cx = &cxs[ix];
8009 PERL_CONTEXT *ncx = &ncxs[ix];
8010 ncx->cx_type = cx->cx_type;
8011 if (CxTYPE(cx) == CXt_SUBST) {
8012 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
8013 }
8014 else {
8015 ncx->blk_oldsp = cx->blk_oldsp;
8016 ncx->blk_oldcop = cx->blk_oldcop;
8017 ncx->blk_oldretsp = cx->blk_oldretsp;
8018 ncx->blk_oldmarksp = cx->blk_oldmarksp;
8019 ncx->blk_oldscopesp = cx->blk_oldscopesp;
8020 ncx->blk_oldpm = cx->blk_oldpm;
8021 ncx->blk_gimme = cx->blk_gimme;
8022 switch (CxTYPE(cx)) {
8023 case CXt_SUB:
8024 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
8025 ? cv_dup_inc(cx->blk_sub.cv)
8026 : cv_dup(cx->blk_sub.cv));
8027 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
8028 ? av_dup_inc(cx->blk_sub.argarray)
8029 : Nullav);
8030 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
8031 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
8032 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8033 ncx->blk_sub.lval = cx->blk_sub.lval;
8034 break;
8035 case CXt_EVAL:
8036 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
8037 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 8038 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 8039 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
8040 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
8041 break;
8042 case CXt_LOOP:
8043 ncx->blk_loop.label = cx->blk_loop.label;
8044 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
8045 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
8046 ncx->blk_loop.next_op = cx->blk_loop.next_op;
8047 ncx->blk_loop.last_op = cx->blk_loop.last_op;
8048 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
8049 ? cx->blk_loop.iterdata
8050 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 8051 ncx->blk_loop.oldcurpad
8052 = (SV**)ptr_table_fetch(PL_ptr_table,
8053 cx->blk_loop.oldcurpad);
1d7c1841
GS		 8054 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
8055 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
8056 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
8057 ncx->blk_loop.iterix = cx->blk_loop.iterix;
8058 ncx->blk_loop.itermax = cx->blk_loop.itermax;
8059 break;
8060 case CXt_FORMAT:
8061 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
8062 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
8063 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
8064 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8065 break;
8066 case CXt_BLOCK:
8067 case CXt_NULL:
8068 break;
8069 }
8070 }
8071 --ix;
8072 }
8073 return ncxs;
8074}
8075
8076PERL_SI *
8077Perl_si_dup(pTHX_ PERL_SI *si)
8078{
8079 PERL_SI *nsi;
8080
8081 if (!si)
8082 return (PERL_SI*)NULL;
8083
8084 /* look for it in the table first */
8085 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
8086 if (nsi)
8087 return nsi;
8088
8089 /* create anew and remember what it is */
8090 Newz(56, nsi, 1, PERL_SI);
8091 ptr_table_store(PL_ptr_table, si, nsi);
8092
8093 nsi->si_stack = av_dup_inc(si->si_stack);
8094 nsi->si_cxix = si->si_cxix;
8095 nsi->si_cxmax = si->si_cxmax;
8096 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
8097 nsi->si_type = si->si_type;
8098 nsi->si_prev = si_dup(si->si_prev);
8099 nsi->si_next = si_dup(si->si_next);
8100 nsi->si_markoff = si->si_markoff;
8101
8102 return nsi;
8103}
8104
8105#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
8106#define TOPINT(ss,ix) ((ss)[ix].any_i32)
8107#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
8108#define TOPLONG(ss,ix) ((ss)[ix].any_long)
8109#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
8110#define TOPIV(ss,ix) ((ss)[ix].any_iv)
8111#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
8112#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
8113#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
8114#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
8115#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
8116#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
8117
8118/* XXXXX todo */
8119#define pv_dup_inc(p) SAVEPV(p)
8120#define pv_dup(p) SAVEPV(p)
8121#define svp_dup_inc(p,pp) any_dup(p,pp)
8122
8123void *
8124Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
8125{
8126 void *ret;
8127
8128 if (!v)
8129 return (void*)NULL;
8130
8131 /* look for it in the table first */
8132 ret = ptr_table_fetch(PL_ptr_table, v);
8133 if (ret)
8134 return ret;
8135
8136 /* see if it is part of the interpreter structure */
8137 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
8138 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
8139 else
8140 ret = v;
8141
8142 return ret;
8143}
8144
8145ANY *
8146Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
8147{
8148 ANY *ss = proto_perl->Tsavestack;
8149 I32 ix = proto_perl->Tsavestack_ix;
8150 I32 max = proto_perl->Tsavestack_max;
8151 ANY *nss;
8152 SV *sv;
8153 GV *gv;
8154 AV *av;
8155 HV *hv;
8156 void* ptr;
8157 int intval;
8158 long longval;
8159 GP *gp;
8160 IV iv;
8161 I32 i;
8162 char *c;
8163 void (*dptr) (void*);
8164 void (*dxptr) (pTHXo_ void*);
e977893f 8165 OP *o;
1d7c1841
GS		 8166
8167 Newz(54, nss, max, ANY);
8168
8169 while (ix > 0) {
8170 i = POPINT(ss,ix);
8171 TOPINT(nss,ix) = i;
8172 switch (i) {
8173 case SAVEt_ITEM: /* normal string */
8174 sv = (SV*)POPPTR(ss,ix);
8175 TOPPTR(nss,ix) = sv_dup_inc(sv);
8176 sv = (SV*)POPPTR(ss,ix);
8177 TOPPTR(nss,ix) = sv_dup_inc(sv);
8178 break;
8179 case SAVEt_SV: /* scalar reference */
8180 sv = (SV*)POPPTR(ss,ix);
8181 TOPPTR(nss,ix) = sv_dup_inc(sv);
8182 gv = (GV*)POPPTR(ss,ix);
8183 TOPPTR(nss,ix) = gv_dup_inc(gv);
8184 break;
f4dd75d9
GS		 8185 case SAVEt_GENERIC_PVREF: /* generic char* */
8186 c = (char*)POPPTR(ss,ix);
8187 TOPPTR(nss,ix) = pv_dup(c);
8188 ptr = POPPTR(ss,ix);
8189 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8190 break;
1d7c1841
GS		 8191 case SAVEt_GENERIC_SVREF: /* generic sv */
8192 case SAVEt_SVREF: /* scalar reference */
8193 sv = (SV*)POPPTR(ss,ix);
8194 TOPPTR(nss,ix) = sv_dup_inc(sv);
8195 ptr = POPPTR(ss,ix);
8196 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
8197 break;
8198 case SAVEt_AV: /* array reference */
8199 av = (AV*)POPPTR(ss,ix);
8200 TOPPTR(nss,ix) = av_dup_inc(av);
8201 gv = (GV*)POPPTR(ss,ix);
8202 TOPPTR(nss,ix) = gv_dup(gv);
8203 break;
8204 case SAVEt_HV: /* hash reference */
8205 hv = (HV*)POPPTR(ss,ix);
8206 TOPPTR(nss,ix) = hv_dup_inc(hv);
8207 gv = (GV*)POPPTR(ss,ix);
8208 TOPPTR(nss,ix) = gv_dup(gv);
8209 break;
8210 case SAVEt_INT: /* int reference */
8211 ptr = POPPTR(ss,ix);
8212 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8213 intval = (int)POPINT(ss,ix);
8214 TOPINT(nss,ix) = intval;
8215 break;
8216 case SAVEt_LONG: /* long reference */
8217 ptr = POPPTR(ss,ix);
8218 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8219 longval = (long)POPLONG(ss,ix);
8220 TOPLONG(nss,ix) = longval;
8221 break;
8222 case SAVEt_I32: /* I32 reference */
8223 case SAVEt_I16: /* I16 reference */
8224 case SAVEt_I8: /* I8 reference */
8225 ptr = POPPTR(ss,ix);
8226 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8227 i = POPINT(ss,ix);
8228 TOPINT(nss,ix) = i;
8229 break;
8230 case SAVEt_IV: /* IV reference */
8231 ptr = POPPTR(ss,ix);
8232 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8233 iv = POPIV(ss,ix);
8234 TOPIV(nss,ix) = iv;
8235 break;
8236 case SAVEt_SPTR: /* SV* reference */
8237 ptr = POPPTR(ss,ix);
8238 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8239 sv = (SV*)POPPTR(ss,ix);
8240 TOPPTR(nss,ix) = sv_dup(sv);
8241 break;
8242 case SAVEt_VPTR: /* random* reference */
8243 ptr = POPPTR(ss,ix);
8244 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8245 ptr = POPPTR(ss,ix);
8246 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8247 break;
8248 case SAVEt_PPTR: /* char* reference */
8249 ptr = POPPTR(ss,ix);
8250 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8251 c = (char*)POPPTR(ss,ix);
8252 TOPPTR(nss,ix) = pv_dup(c);
8253 break;
8254 case SAVEt_HPTR: /* HV* reference */
8255 ptr = POPPTR(ss,ix);
8256 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8257 hv = (HV*)POPPTR(ss,ix);
8258 TOPPTR(nss,ix) = hv_dup(hv);
8259 break;
8260 case SAVEt_APTR: /* AV* reference */
8261 ptr = POPPTR(ss,ix);
8262 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8263 av = (AV*)POPPTR(ss,ix);
8264 TOPPTR(nss,ix) = av_dup(av);
8265 break;
8266 case SAVEt_NSTAB:
8267 gv = (GV*)POPPTR(ss,ix);
8268 TOPPTR(nss,ix) = gv_dup(gv);
8269 break;
8270 case SAVEt_GP: /* scalar reference */
8271 gp = (GP*)POPPTR(ss,ix);
8272 TOPPTR(nss,ix) = gp = gp_dup(gp);
8273 (void)GpREFCNT_inc(gp);
8274 gv = (GV*)POPPTR(ss,ix);
8275 TOPPTR(nss,ix) = gv_dup_inc(c);
8276 c = (char*)POPPTR(ss,ix);
8277 TOPPTR(nss,ix) = pv_dup(c);
8278 iv = POPIV(ss,ix);
8279 TOPIV(nss,ix) = iv;
8280 iv = POPIV(ss,ix);
8281 TOPIV(nss,ix) = iv;
8282 break;
8283 case SAVEt_FREESV:
8284 sv = (SV*)POPPTR(ss,ix);
8285 TOPPTR(nss,ix) = sv_dup_inc(sv);
8286 break;
8287 case SAVEt_FREEOP:
8288 ptr = POPPTR(ss,ix);
8289 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
8290 /* these are assumed to be refcounted properly */
8291 switch (((OP*)ptr)->op_type) {
8292 case OP_LEAVESUB:
8293 case OP_LEAVESUBLV:
8294 case OP_LEAVEEVAL:
8295 case OP_LEAVE:
8296 case OP_SCOPE:
8297 case OP_LEAVEWRITE:
e977893f
GS		 8298 TOPPTR(nss,ix) = ptr;
8299 o = (OP*)ptr;
8300 OpREFCNT_inc(o);
1d7c1841
GS		 8301 break;
8302 default:
8303 TOPPTR(nss,ix) = Nullop;
8304 break;
8305 }
8306 }
8307 else
8308 TOPPTR(nss,ix) = Nullop;
8309 break;
8310 case SAVEt_FREEPV:
8311 c = (char*)POPPTR(ss,ix);
8312 TOPPTR(nss,ix) = pv_dup_inc(c);
8313 break;
8314 case SAVEt_CLEARSV:
8315 longval = POPLONG(ss,ix);
8316 TOPLONG(nss,ix) = longval;
8317 break;
8318 case SAVEt_DELETE:
8319 hv = (HV*)POPPTR(ss,ix);
8320 TOPPTR(nss,ix) = hv_dup_inc(hv);
8321 c = (char*)POPPTR(ss,ix);
8322 TOPPTR(nss,ix) = pv_dup_inc(c);
8323 i = POPINT(ss,ix);
8324 TOPINT(nss,ix) = i;
8325 break;
8326 case SAVEt_DESTRUCTOR:
8327 ptr = POPPTR(ss,ix);
8328 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8329 dptr = POPDPTR(ss,ix);
ef75a179 8330 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 8331 break;
8332 case SAVEt_DESTRUCTOR_X:
8333 ptr = POPPTR(ss,ix);
8334 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8335 dxptr = POPDXPTR(ss,ix);
ef75a179 8336 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 8337 break;
8338 case SAVEt_REGCONTEXT:
8339 case SAVEt_ALLOC:
8340 i = POPINT(ss,ix);
8341 TOPINT(nss,ix) = i;
8342 ix -= i;
8343 break;
8344 case SAVEt_STACK_POS: /* Position on Perl stack */
8345 i = POPINT(ss,ix);
8346 TOPINT(nss,ix) = i;
8347 break;
8348 case SAVEt_AELEM: /* array element */
8349 sv = (SV*)POPPTR(ss,ix);
8350 TOPPTR(nss,ix) = sv_dup_inc(sv);
8351 i = POPINT(ss,ix);
8352 TOPINT(nss,ix) = i;
8353 av = (AV*)POPPTR(ss,ix);
8354 TOPPTR(nss,ix) = av_dup_inc(av);
8355 break;
8356 case SAVEt_HELEM: /* hash element */
8357 sv = (SV*)POPPTR(ss,ix);
8358 TOPPTR(nss,ix) = sv_dup_inc(sv);
8359 sv = (SV*)POPPTR(ss,ix);
8360 TOPPTR(nss,ix) = sv_dup_inc(sv);
8361 hv = (HV*)POPPTR(ss,ix);
8362 TOPPTR(nss,ix) = hv_dup_inc(hv);
8363 break;
8364 case SAVEt_OP:
8365 ptr = POPPTR(ss,ix);
8366 TOPPTR(nss,ix) = ptr;
8367 break;
8368 case SAVEt_HINTS:
8369 i = POPINT(ss,ix);
8370 TOPINT(nss,ix) = i;
8371 break;
c4410b1b
GS		 8372 case SAVEt_COMPPAD:
8373 av = (AV*)POPPTR(ss,ix);
8374 TOPPTR(nss,ix) = av_dup(av);
8375 break;
c3564e5c
GS		 8376 case SAVEt_PADSV:
8377 longval = (long)POPLONG(ss,ix);
8378 TOPLONG(nss,ix) = longval;
8379 ptr = POPPTR(ss,ix);
8380 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8381 sv = (SV*)POPPTR(ss,ix);
8382 TOPPTR(nss,ix) = sv_dup(sv);
8383 break;
1d7c1841
GS		 8384 default:
8385 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
8386 }
8387 }
8388
8389 return nss;
8390}
8391
8392#ifdef PERL_OBJECT
8393#include "XSUB.h"
8394#endif
8395
8396PerlInterpreter *
8397perl_clone(PerlInterpreter *proto_perl, UV flags)
8398{
8399#ifdef PERL_OBJECT
8400 CPerlObj *pPerl = (CPerlObj*)proto_perl;
8401#endif
8402
8403#ifdef PERL_IMPLICIT_SYS
8404 return perl_clone_using(proto_perl, flags,
8405 proto_perl->IMem,
8406 proto_perl->IMemShared,
8407 proto_perl->IMemParse,
8408 proto_perl->IEnv,
8409 proto_perl->IStdIO,
8410 proto_perl->ILIO,
8411 proto_perl->IDir,
8412 proto_perl->ISock,
8413 proto_perl->IProc);
8414}
8415
8416PerlInterpreter *
8417perl_clone_using(PerlInterpreter *proto_perl, UV flags,
8418 struct IPerlMem* ipM, struct IPerlMem* ipMS,
8419 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
8420 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
8421 struct IPerlDir* ipD, struct IPerlSock* ipS,
8422 struct IPerlProc* ipP)
8423{
8424 /* XXX many of the string copies here can be optimized if they're
8425 * constants; they need to be allocated as common memory and just
8426 * their pointers copied. */
8427
8428 IV i;
1d7c1841
GS		 8429# ifdef PERL_OBJECT
8430 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
8431 ipD, ipS, ipP);
ba869deb 8432 PERL_SET_THX(pPerl);
1d7c1841
GS		 8433# else /* !PERL_OBJECT */
8434 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 8435 PERL_SET_THX(my_perl);
1d7c1841
GS		 8436
8437# ifdef DEBUGGING
8438 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8439 PL_markstack = 0;
8440 PL_scopestack = 0;
8441 PL_savestack = 0;
8442 PL_retstack = 0;
66fe0623 8443 PL_sig_pending = 0;
1d7c1841
GS		 8444# else /* !DEBUGGING */
8445 Zero(my_perl, 1, PerlInterpreter);
8446# endif /* DEBUGGING */
8447
8448 /* host pointers */
8449 PL_Mem = ipM;
8450 PL_MemShared = ipMS;
8451 PL_MemParse = ipMP;
8452 PL_Env = ipE;
8453 PL_StdIO = ipStd;
8454 PL_LIO = ipLIO;
8455 PL_Dir = ipD;
8456 PL_Sock = ipS;
8457 PL_Proc = ipP;
8458# endif /* PERL_OBJECT */
8459#else /* !PERL_IMPLICIT_SYS */
8460 IV i;
1d7c1841 8461 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 8462 PERL_SET_THX(my_perl);
1d7c1841
GS		 8463
8464# ifdef DEBUGGING
8465 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8466 PL_markstack = 0;
8467 PL_scopestack = 0;
8468 PL_savestack = 0;
8469 PL_retstack = 0;
66fe0623 8470 PL_sig_pending = 0;
1d7c1841
GS		 8471# else /* !DEBUGGING */
8472 Zero(my_perl, 1, PerlInterpreter);
8473# endif /* DEBUGGING */
8474#endif /* PERL_IMPLICIT_SYS */
8475
8476 /* arena roots */
8477 PL_xiv_arenaroot = NULL;
8478 PL_xiv_root = NULL;
612f20c3 8479 PL_xnv_arenaroot = NULL;
1d7c1841 8480 PL_xnv_root = NULL;
612f20c3 8481 PL_xrv_arenaroot = NULL;
1d7c1841 8482 PL_xrv_root = NULL;
612f20c3 8483 PL_xpv_arenaroot = NULL;
1d7c1841 8484 PL_xpv_root = NULL;
612f20c3 8485 PL_xpviv_arenaroot = NULL;
1d7c1841 8486 PL_xpviv_root = NULL;
612f20c3 8487 PL_xpvnv_arenaroot = NULL;
1d7c1841 8488 PL_xpvnv_root = NULL;
612f20c3 8489 PL_xpvcv_arenaroot = NULL;
1d7c1841 8490 PL_xpvcv_root = NULL;
612f20c3 8491 PL_xpvav_arenaroot = NULL;
1d7c1841 8492 PL_xpvav_root = NULL;
612f20c3 8493 PL_xpvhv_arenaroot = NULL;
1d7c1841 8494 PL_xpvhv_root = NULL;
612f20c3 8495 PL_xpvmg_arenaroot = NULL;
1d7c1841 8496 PL_xpvmg_root = NULL;
612f20c3 8497 PL_xpvlv_arenaroot = NULL;
1d7c1841 8498 PL_xpvlv_root = NULL;
612f20c3 8499 PL_xpvbm_arenaroot = NULL;
1d7c1841 8500 PL_xpvbm_root = NULL;
612f20c3 8501 PL_he_arenaroot = NULL;
1d7c1841
GS		 8502 PL_he_root = NULL;
8503 PL_nice_chunk = NULL;
8504 PL_nice_chunk_size = 0;
8505 PL_sv_count = 0;
8506 PL_sv_objcount = 0;
8507 PL_sv_root = Nullsv;
8508 PL_sv_arenaroot = Nullsv;
8509
8510 PL_debug = proto_perl->Idebug;
8511
8512 /* create SV map for pointer relocation */
8513 PL_ptr_table = ptr_table_new();
8514
8515 /* initialize these special pointers as early as possible */
8516 SvANY(&PL_sv_undef) = NULL;
8517 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
8518 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
8519 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
8520
8521#ifdef PERL_OBJECT
8522 SvUPGRADE(&PL_sv_no, SVt_PVNV);
8523#else
8524 SvANY(&PL_sv_no) = new_XPVNV();
8525#endif
8526 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
8527 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8528 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
8529 SvCUR(&PL_sv_no) = 0;
8530 SvLEN(&PL_sv_no) = 1;
8531 SvNVX(&PL_sv_no) = 0;
8532 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
8533
8534#ifdef PERL_OBJECT
8535 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
8536#else
8537 SvANY(&PL_sv_yes) = new_XPVNV();
8538#endif
8539 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
8540 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8541 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
8542 SvCUR(&PL_sv_yes) = 1;
8543 SvLEN(&PL_sv_yes) = 2;
8544 SvNVX(&PL_sv_yes) = 1;
8545 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
8546
8547 /* create shared string table */
8548 PL_strtab = newHV();
8549 HvSHAREKEYS_off(PL_strtab);
8550 hv_ksplit(PL_strtab, 512);
8551 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
8552
8553 PL_compiling = proto_perl->Icompiling;
8554 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
8555 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
8556 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
8557 if (!specialWARN(PL_compiling.cop_warnings))
8558 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
ac27b0f5
NIS		 8559 if (!specialCopIO(PL_compiling.cop_io))
8560 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
1d7c1841
GS		 8561 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
8562
8563 /* pseudo environmental stuff */
8564 PL_origargc = proto_perl->Iorigargc;
8565 i = PL_origargc;
8566 New(0, PL_origargv, i+1, char*);
8567 PL_origargv[i] = '\0';
8568 while (i-- > 0) {
8569 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
8570 }
8571 PL_envgv = gv_dup(proto_perl->Ienvgv);
8572 PL_incgv = gv_dup(proto_perl->Iincgv);
8573 PL_hintgv = gv_dup(proto_perl->Ihintgv);
8574 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
8575 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
8576 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
8577
8578 /* switches */
8579 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 8580 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 8581 PL_localpatches = proto_perl->Ilocalpatches;
8582 PL_splitstr = proto_perl->Isplitstr;
8583 PL_preprocess = proto_perl->Ipreprocess;
8584 PL_minus_n = proto_perl->Iminus_n;
8585 PL_minus_p = proto_perl->Iminus_p;
8586 PL_minus_l = proto_perl->Iminus_l;
8587 PL_minus_a = proto_perl->Iminus_a;
8588 PL_minus_F = proto_perl->Iminus_F;
8589 PL_doswitches = proto_perl->Idoswitches;
8590 PL_dowarn = proto_perl->Idowarn;
8591 PL_doextract = proto_perl->Idoextract;
8592 PL_sawampersand = proto_perl->Isawampersand;
8593 PL_unsafe = proto_perl->Iunsafe;
8594 PL_inplace = SAVEPV(proto_perl->Iinplace);
8595 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
8596 PL_perldb = proto_perl->Iperldb;
8597 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
8598
8599 /* magical thingies */
8600 /* XXX time(&PL_basetime) when asked for? */
8601 PL_basetime = proto_perl->Ibasetime;
8602 PL_formfeed = sv_dup(proto_perl->Iformfeed);
8603
8604 PL_maxsysfd = proto_perl->Imaxsysfd;
8605 PL_multiline = proto_perl->Imultiline;
8606 PL_statusvalue = proto_perl->Istatusvalue;
8607#ifdef VMS
8608 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
8609#endif
8610
8611 /* shortcuts to various I/O objects */
8612 PL_stdingv = gv_dup(proto_perl->Istdingv);
8613 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
8614 PL_defgv = gv_dup(proto_perl->Idefgv);
8615 PL_argvgv = gv_dup(proto_perl->Iargvgv);
8616 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
8617 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
8618
8619 /* shortcuts to regexp stuff */
8620 PL_replgv = gv_dup(proto_perl->Ireplgv);
8621
8622 /* shortcuts to misc objects */
8623 PL_errgv = gv_dup(proto_perl->Ierrgv);
8624
8625 /* shortcuts to debugging objects */
8626 PL_DBgv = gv_dup(proto_perl->IDBgv);
8627 PL_DBline = gv_dup(proto_perl->IDBline);
8628 PL_DBsub = gv_dup(proto_perl->IDBsub);
8629 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
8630 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
8631 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
8632 PL_lineary = av_dup(proto_perl->Ilineary);
8633 PL_dbargs = av_dup(proto_perl->Idbargs);
8634
8635 /* symbol tables */
8636 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
8637 PL_curstash = hv_dup(proto_perl->Tcurstash);
8638 PL_debstash = hv_dup(proto_perl->Idebstash);
8639 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
8640 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
8641
8642 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
8643 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 8644 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 8645 PL_initav = av_dup_inc(proto_perl->Iinitav);
8646
8647 PL_sub_generation = proto_perl->Isub_generation;
8648
8649 /* funky return mechanisms */
8650 PL_forkprocess = proto_perl->Iforkprocess;
8651
8652 /* subprocess state */
8653 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
8654
8655 /* internal state */
8656 PL_tainting = proto_perl->Itainting;
8657 PL_maxo = proto_perl->Imaxo;
8658 if (proto_perl->Iop_mask)
8659 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
8660 else
8661 PL_op_mask = Nullch;
8662
8663 /* current interpreter roots */
8664 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
8665 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
8666 PL_main_start = proto_perl->Imain_start;
e977893f 8667 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 8668 PL_eval_start = proto_perl->Ieval_start;
8669
8670 /* runtime control stuff */
8671 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
8672 PL_copline = proto_perl->Icopline;
8673
8674 PL_filemode = proto_perl->Ifilemode;
8675 PL_lastfd = proto_perl->Ilastfd;
8676 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
8677 PL_Argv = NULL;
8678 PL_Cmd = Nullch;
8679 PL_gensym = proto_perl->Igensym;
8680 PL_preambled = proto_perl->Ipreambled;
8681 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
8682 PL_laststatval = proto_perl->Ilaststatval;
8683 PL_laststype = proto_perl->Ilaststype;
8684 PL_mess_sv = Nullsv;
8685
7889fe52 8686 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
1d7c1841
GS		 8687 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8688
8689 /* interpreter atexit processing */
8690 PL_exitlistlen = proto_perl->Iexitlistlen;
8691 if (PL_exitlistlen) {
8692 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8693 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8694 }
8695 else
8696 PL_exitlist = (PerlExitListEntry*)NULL;
8697 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8698
8699 PL_profiledata = NULL;
8700 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8701 /* PL_rsfp_filters entries have fake IoDIRP() */
8702 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8703
8704 PL_compcv = cv_dup(proto_perl->Icompcv);
8705 PL_comppad = av_dup(proto_perl->Icomppad);
8706 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8707 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8708 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8709 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8710 proto_perl->Tcurpad);
8711
8712#ifdef HAVE_INTERP_INTERN
8713 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8714#endif
8715
8716 /* more statics moved here */
8717 PL_generation = proto_perl->Igeneration;
8718 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 8719
8720 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8721 PL_in_clean_all = proto_perl->Iin_clean_all;
8722
8723 PL_uid = proto_perl->Iuid;
8724 PL_euid = proto_perl->Ieuid;
8725 PL_gid = proto_perl->Igid;
8726 PL_egid = proto_perl->Iegid;
8727 PL_nomemok = proto_perl->Inomemok;
8728 PL_an = proto_perl->Ian;
8729 PL_cop_seqmax = proto_perl->Icop_seqmax;
8730 PL_op_seqmax = proto_perl->Iop_seqmax;
8731 PL_evalseq = proto_perl->Ievalseq;
8732 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8733 PL_origalen = proto_perl->Iorigalen;
8734 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8735 PL_osname = SAVEPV(proto_perl->Iosname);
8736 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8737 PL_sighandlerp = proto_perl->Isighandlerp;
8738
8739
8740 PL_runops = proto_perl->Irunops;
8741
8742 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8743
8744#ifdef CSH
8745 PL_cshlen = proto_perl->Icshlen;
8746 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8747#endif
8748
8749 PL_lex_state = proto_perl->Ilex_state;
8750 PL_lex_defer = proto_perl->Ilex_defer;
8751 PL_lex_expect = proto_perl->Ilex_expect;
8752 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8753 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8754 PL_lex_starts = proto_perl->Ilex_starts;
8755 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8756 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8757 PL_lex_op = proto_perl->Ilex_op;
8758 PL_lex_inpat = proto_perl->Ilex_inpat;
8759 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8760 PL_lex_brackets = proto_perl->Ilex_brackets;
8761 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8762 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8763 PL_lex_casemods = proto_perl->Ilex_casemods;
8764 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8765 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8766
8767 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8768 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8769 PL_nexttoke = proto_perl->Inexttoke;
8770
8771 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8772 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8773 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8774 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8775 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8776 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8777 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8778 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8779 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8780 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8781 PL_pending_ident = proto_perl->Ipending_ident;
8782 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8783
8784 PL_expect = proto_perl->Iexpect;
8785
8786 PL_multi_start = proto_perl->Imulti_start;
8787 PL_multi_end = proto_perl->Imulti_end;
8788 PL_multi_open = proto_perl->Imulti_open;
8789 PL_multi_close = proto_perl->Imulti_close;
8790
8791 PL_error_count = proto_perl->Ierror_count;
8792 PL_subline = proto_perl->Isubline;
8793 PL_subname = sv_dup_inc(proto_perl->Isubname);
8794
8795 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8796 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8797 PL_padix = proto_perl->Ipadix;
8798 PL_padix_floor = proto_perl->Ipadix_floor;
8799 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8800
8801 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8802 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8803 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8804 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8805 PL_last_lop_op = proto_perl->Ilast_lop_op;
8806 PL_in_my = proto_perl->Iin_my;
8807 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8808#ifdef FCRYPT
8809 PL_cryptseen = proto_perl->Icryptseen;
8810#endif
8811
8812 PL_hints = proto_perl->Ihints;
8813
8814 PL_amagic_generation = proto_perl->Iamagic_generation;
8815
8816#ifdef USE_LOCALE_COLLATE
8817 PL_collation_ix = proto_perl->Icollation_ix;
8818 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8819 PL_collation_standard = proto_perl->Icollation_standard;
8820 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8821 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8822#endif /* USE_LOCALE_COLLATE */
8823
8824#ifdef USE_LOCALE_NUMERIC
8825 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8826 PL_numeric_standard = proto_perl->Inumeric_standard;
8827 PL_numeric_local = proto_perl->Inumeric_local;
8828 PL_numeric_radix = proto_perl->Inumeric_radix;
8829#endif /* !USE_LOCALE_NUMERIC */
8830
8831 /* utf8 character classes */
8832 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8833 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8834 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8835 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8836 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8837 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8838 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8839 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8840 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8841 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8842 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8843 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8844 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8845 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8846 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8847 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8848 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8849
8850 /* swatch cache */
8851 PL_last_swash_hv = Nullhv; /* reinits on demand */
8852 PL_last_swash_klen = 0;
8853 PL_last_swash_key[0]= '\0';
8854 PL_last_swash_tmps = (U8*)NULL;
8855 PL_last_swash_slen = 0;
8856
8857 /* perly.c globals */
8858 PL_yydebug = proto_perl->Iyydebug;
8859 PL_yynerrs = proto_perl->Iyynerrs;
8860 PL_yyerrflag = proto_perl->Iyyerrflag;
8861 PL_yychar = proto_perl->Iyychar;
8862 PL_yyval = proto_perl->Iyyval;
8863 PL_yylval = proto_perl->Iyylval;
8864
8865 PL_glob_index = proto_perl->Iglob_index;
8866 PL_srand_called = proto_perl->Isrand_called;
8867 PL_uudmap['M'] = 0; /* reinits on demand */
8868 PL_bitcount = Nullch; /* reinits on demand */
8869
66fe0623
NIS		 8870 if (proto_perl->Ipsig_pend) {
8871 Newz(0, PL_psig_pend, SIG_SIZE, int);
8872 }
8873 else {
8874 PL_psig_pend = (int*)NULL;
8875 }
8876
1d7c1841 8877 if (proto_perl->Ipsig_ptr) {
76d3c696
JH		 8878 Newz(0, PL_psig_ptr, SIG_SIZE, SV*);
8879 Newz(0, PL_psig_name, SIG_SIZE, SV*);
76d3c696
JH		 8880 for (i = 1; i < SIG_SIZE; i++) {
8881 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
1d7c1841
GS		 8882 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8883 }
8884 }
8885 else {
8886 PL_psig_ptr = (SV**)NULL;
8887 PL_psig_name = (SV**)NULL;
8888 }
8889
8890 /* thrdvar.h stuff */
8891
8892 if (flags & 1) {
8893 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8894 PL_tmps_ix = proto_perl->Ttmps_ix;
8895 PL_tmps_max = proto_perl->Ttmps_max;
8896 PL_tmps_floor = proto_perl->Ttmps_floor;
8897 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8898 i = 0;
8899 while (i <= PL_tmps_ix) {
8900 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8901 ++i;
8902 }
8903
8904 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8905 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8906 Newz(54, PL_markstack, i, I32);
8907 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8908 - proto_perl->Tmarkstack);
8909 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8910 - proto_perl->Tmarkstack);
8911 Copy(proto_perl->Tmarkstack, PL_markstack,
8912 PL_markstack_ptr - PL_markstack + 1, I32);
8913
8914 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8915 * NOTE: unlike the others! */
8916 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8917 PL_scopestack_max = proto_perl->Tscopestack_max;
8918 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8919 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8920
8921 /* next push_return() sets PL_retstack[PL_retstack_ix]
8922 * NOTE: unlike the others! */
8923 PL_retstack_ix = proto_perl->Tretstack_ix;
8924 PL_retstack_max = proto_perl->Tretstack_max;
8925 Newz(54, PL_retstack, PL_retstack_max, OP*);
8926 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8927
8928 /* NOTE: si_dup() looks at PL_markstack */
8929 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8930
8931 /* PL_curstack = PL_curstackinfo->si_stack; */
8932 PL_curstack = av_dup(proto_perl->Tcurstack);
8933 PL_mainstack = av_dup(proto_perl->Tmainstack);
8934
8935 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8936 PL_stack_base = AvARRAY(PL_curstack);
8937 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8938 - proto_perl->Tstack_base);
8939 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8940
8941 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8942 * NOTE: unlike the others! */
8943 PL_savestack_ix = proto_perl->Tsavestack_ix;
8944 PL_savestack_max = proto_perl->Tsavestack_max;
8945 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8946 PL_savestack = ss_dup(proto_perl);
8947 }
8948 else {
8949 init_stacks();
985e7056 8950 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8951 }
8952
8953 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8954 PL_top_env = &PL_start_env;
8955
8956 PL_op = proto_perl->Top;
8957
8958 PL_Sv = Nullsv;
8959 PL_Xpv = (XPV*)NULL;
8960 PL_na = proto_perl->Tna;
8961
8962 PL_statbuf = proto_perl->Tstatbuf;
8963 PL_statcache = proto_perl->Tstatcache;
8964 PL_statgv = gv_dup(proto_perl->Tstatgv);
8965 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8966#ifdef HAS_TIMES
8967 PL_timesbuf = proto_perl->Ttimesbuf;
8968#endif
8969
8970 PL_tainted = proto_perl->Ttainted;
8971 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8972 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8973 PL_rs = sv_dup_inc(proto_perl->Trs);
8974 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
7889fe52 8975 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
1d7c1841
GS		 8976 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8977 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8978 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8979 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8980 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8981
8982 PL_restartop = proto_perl->Trestartop;
8983 PL_in_eval = proto_perl->Tin_eval;
8984 PL_delaymagic = proto_perl->Tdelaymagic;
8985 PL_dirty = proto_perl->Tdirty;
8986 PL_localizing = proto_perl->Tlocalizing;
8987
14dd3ad8 8988#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8989 PL_protect = proto_perl->Tprotect;
14dd3ad8 8990#endif
1d7c1841
GS		 8991 PL_errors = sv_dup_inc(proto_perl->Terrors);
8992 PL_av_fetch_sv = Nullsv;
8993 PL_hv_fetch_sv = Nullsv;
8994 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8995 PL_modcount = proto_perl->Tmodcount;
8996 PL_lastgotoprobe = Nullop;
8997 PL_dumpindent = proto_perl->Tdumpindent;
8998
8999 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
9000 PL_sortstash = hv_dup(proto_perl->Tsortstash);
9001 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
9002 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
9003 PL_sortcxix = proto_perl->Tsortcxix;
9004 PL_efloatbuf = Nullch; /* reinits on demand */
9005 PL_efloatsize = 0; /* reinits on demand */
9006
9007 /* regex stuff */
9008
9009 PL_screamfirst = NULL;
9010 PL_screamnext = NULL;
9011 PL_maxscream = -1; /* reinits on demand */
9012 PL_lastscream = Nullsv;
9013
9014 PL_watchaddr = NULL;
9015 PL_watchok = Nullch;
9016
9017 PL_regdummy = proto_perl->Tregdummy;
9018 PL_regcomp_parse = Nullch;
9019 PL_regxend = Nullch;
9020 PL_regcode = (regnode*)NULL;
9021 PL_regnaughty = 0;
9022 PL_regsawback = 0;
9023 PL_regprecomp = Nullch;
9024 PL_regnpar = 0;
9025 PL_regsize = 0;
9026 PL_regflags = 0;
9027 PL_regseen = 0;
9028 PL_seen_zerolen = 0;
9029 PL_seen_evals = 0;
9030 PL_regcomp_rx = (regexp*)NULL;
9031 PL_extralen = 0;
9032 PL_colorset = 0; /* reinits PL_colors[] */
9033 /*PL_colors[6] = {0,0,0,0,0,0};*/
9034 PL_reg_whilem_seen = 0;
9035 PL_reginput = Nullch;
9036 PL_regbol = Nullch;
9037 PL_regeol = Nullch;
9038 PL_regstartp = (I32*)NULL;
9039 PL_regendp = (I32*)NULL;
9040 PL_reglastparen = (U32*)NULL;
9041 PL_regtill = Nullch;
9042 PL_regprev = '\n';
9043 PL_reg_start_tmp = (char**)NULL;
9044 PL_reg_start_tmpl = 0;
9045 PL_regdata = (struct reg_data*)NULL;
9046 PL_bostr = Nullch;
9047 PL_reg_flags = 0;
9048 PL_reg_eval_set = 0;
9049 PL_regnarrate = 0;
9050 PL_regprogram = (regnode*)NULL;
9051 PL_regindent = 0;
9052 PL_regcc = (CURCUR*)NULL;
9053 PL_reg_call_cc = (struct re_cc_state*)NULL;
9054 PL_reg_re = (regexp*)NULL;
9055 PL_reg_ganch = Nullch;
9056 PL_reg_sv = Nullsv;
9057 PL_reg_magic = (MAGIC*)NULL;
9058 PL_reg_oldpos = 0;
9059 PL_reg_oldcurpm = (PMOP*)NULL;
9060 PL_reg_curpm = (PMOP*)NULL;
9061 PL_reg_oldsaved = Nullch;
9062 PL_reg_oldsavedlen = 0;
9063 PL_reg_maxiter = 0;
9064 PL_reg_leftiter = 0;
9065 PL_reg_poscache = Nullch;
9066 PL_reg_poscache_size= 0;
9067
9068 /* RE engine - function pointers */
9069 PL_regcompp = proto_perl->Tregcompp;
9070 PL_regexecp = proto_perl->Tregexecp;
9071 PL_regint_start = proto_perl->Tregint_start;
9072 PL_regint_string = proto_perl->Tregint_string;
9073 PL_regfree = proto_perl->Tregfree;
9074
9075 PL_reginterp_cnt = 0;
9076 PL_reg_starttry = 0;
9077
9078#ifdef PERL_OBJECT
9079 return (PerlInterpreter*)pPerl;
9080#else
9081 return my_perl;
9082#endif
9083}
9084
9085#else /* !USE_ITHREADS */
51371543
GS		 9086
9087#ifdef PERL_OBJECT
51371543
GS		 9088#include "XSUB.h"
9089#endif
9090
1d7c1841
GS		 9091#endif /* USE_ITHREADS */
9092
51371543
GS		 9093static void
9094do_report_used(pTHXo_ SV *sv)
9095{
9096 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 9097 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 9098 sv_dump(sv);
9099 }
9100}
9101
9102static void
9103do_clean_objs(pTHXo_ SV *sv)
9104{
9105 SV* rv;
9106
9107 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
9108 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8b6e653b
HS		 9109 if (SvWEAKREF(sv)) {
9110 sv_del_backref(sv);
9111 SvWEAKREF_off(sv);
9112 SvRV(sv) = 0;
9113 } else {
9114 SvROK_off(sv);
9115 SvRV(sv) = 0;
9116 SvREFCNT_dec(rv);
9117 }
51371543
GS		 9118 }
9119
9120 /* XXX Might want to check arrays, etc. */
9121}
9122
9123#ifndef DISABLE_DESTRUCTOR_KLUDGE
9124static void
9125do_clean_named_objs(pTHXo_ SV *sv)
9126{
f472eb5c 9127 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 9128 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 9129 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
9130 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
9131 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
9132 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 9133 {
9134 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
9135 SvREFCNT_dec(sv);
9136 }
9137 }
9138}
9139#endif
9140
9141static void
9142do_clean_all(pTHXo_ SV *sv)
9143{
1d7c1841 9144 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 9145 SvFLAGS(sv) |= SVf_BREAK;
9146 SvREFCNT_dec(sv);
9147}
8af02333 9148
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