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Use NVs in POSIX math, not doubles.
[perl5.git] / sv.c
CommitLineData
a0d0e21e 1/* sv.c
79072805 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
79072805
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
79072805
LW		 12 */
13
14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_SV_C
79072805 16#include "perl.h"
79072805 17
51371543 18#define FCALL *f
6fc92669 19#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
2c5424a7 20
51371543
GS		 21static void do_report_used(pTHXo_ SV *sv);
22static void do_clean_objs(pTHXo_ SV *sv);
23#ifndef DISABLE_DESTRUCTOR_KLUDGE
24static void do_clean_named_objs(pTHXo_ SV *sv);
25#endif
26static void do_clean_all(pTHXo_ SV *sv);
27
4561caa4
CS		 28/*
29 * "A time to plant, and a time to uproot what was planted..."
30 */
31
053fc874
GS		 32#define plant_SV(p) \
33 STMT_START { \
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
36 PL_sv_root = (p); \
37 --PL_sv_count; \
38 } STMT_END
a0d0e21e 39
fba3b22e 40/* sv_mutex must be held while calling uproot_SV() */
053fc874
GS		 41#define uproot_SV(p) \
42 STMT_START { \
43 (p) = PL_sv_root; \
44 PL_sv_root = (SV*)SvANY(p); \
45 ++PL_sv_count; \
46 } STMT_END
47
48#define new_SV(p) \
49 STMT_START { \
50 LOCK_SV_MUTEX; \
51 if (PL_sv_root) \
52 uproot_SV(p); \
53 else \
54 (p) = more_sv(); \
55 UNLOCK_SV_MUTEX; \
56 SvANY(p) = 0; \
57 SvREFCNT(p) = 1; \
58 SvFLAGS(p) = 0; \
59 } STMT_END
463ee0b2 60
a0d0e21e 61#ifdef DEBUGGING
4561caa4 62
053fc874
GS		 63#define del_SV(p) \
64 STMT_START { \
65 LOCK_SV_MUTEX; \
66 if (PL_debug & 32768) \
67 del_sv(p); \
68 else \
69 plant_SV(p); \
70 UNLOCK_SV_MUTEX; \
71 } STMT_END
a0d0e21e 72
76e3520e 73STATIC void
cea2e8a9 74S_del_sv(pTHX_ SV *p)
463ee0b2 75{
3280af22 76 if (PL_debug & 32768) {
4633a7c4 77 SV* sva;
a0d0e21e
LW		 78 SV* sv;
79 SV* svend;
80 int ok = 0;
3280af22 81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
4633a7c4
LW		 82 sv = sva + 1;
83 svend = &sva[SvREFCNT(sva)];
a0d0e21e
LW		 84 if (p >= sv && p < svend)
85 ok = 1;
86 }
87 if (!ok) {
0453d815
PM		 88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
1d7c1841
GS		 90 "Attempt to free non-arena SV: 0x%"UVxf,
91 PTR2UV(p));
a0d0e21e
LW		 92 return;
93 }
94 }
4561caa4 95 plant_SV(p);
463ee0b2 96}
a0d0e21e 97
4561caa4
CS		 98#else /* ! DEBUGGING */
99
100#define del_SV(p) plant_SV(p)
101
102#endif /* DEBUGGING */
463ee0b2 103
4633a7c4 104void
864dbfa3 105Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
463ee0b2 106{
4633a7c4 107 SV* sva = (SV*)ptr;
463ee0b2
LW		 108 register SV* sv;
109 register SV* svend;
14dd3ad8 110 Zero(ptr, size, char);
4633a7c4
LW		 111
112 /* The first SV in an arena isn't an SV. */
3280af22 113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
4633a7c4
LW		 114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
116
3280af22
NIS		 117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
4633a7c4
LW		 119
120 svend = &sva[SvREFCNT(sva) - 1];
121 sv = sva + 1;
463ee0b2 122 while (sv < svend) {
a0d0e21e 123 SvANY(sv) = (void *)(SV*)(sv + 1);
8990e307 124 SvFLAGS(sv) = SVTYPEMASK;
463ee0b2
LW		 125 sv++;
126 }
127 SvANY(sv) = 0;
4633a7c4
LW		 128 SvFLAGS(sv) = SVTYPEMASK;
129}
130
fba3b22e 131/* sv_mutex must be held while calling more_sv() */
76e3520e 132STATIC SV*
cea2e8a9 133S_more_sv(pTHX)
4633a7c4 134{
4561caa4
CS		 135 register SV* sv;
136
3280af22
NIS		 137 if (PL_nice_chunk) {
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
c07a80fd 140 }
1edc1566 141 else {
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
145 }
4561caa4
CS		 146 uproot_SV(sv);
147 return sv;
463ee0b2
LW		 148}
149
76e3520e 150STATIC void
cea2e8a9 151S_visit(pTHX_ SVFUNC_t f)
8990e307 152{
4633a7c4 153 SV* sva;
8990e307
LW		 154 SV* sv;
155 register SV* svend;
156
3280af22 157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
4633a7c4 158 svend = &sva[SvREFCNT(sva)];
4561caa4
CS		 159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
51371543 161 (FCALL)(aTHXo_ sv);
8990e307
LW		 162 }
163 }
164}
165
166void
864dbfa3 167Perl_sv_report_used(pTHX)
4561caa4 168{
0b94c7bb 169 visit(do_report_used);
4561caa4
CS		 170}
171
4561caa4 172void
864dbfa3 173Perl_sv_clean_objs(pTHX)
4561caa4 174{
3280af22 175 PL_in_clean_objs = TRUE;
0b94c7bb 176 visit(do_clean_objs);
4561caa4 177#ifndef DISABLE_DESTRUCTOR_KLUDGE
2d0f3c12 178 /* some barnacles may yet remain, clinging to typeglobs */
0b94c7bb 179 visit(do_clean_named_objs);
4561caa4 180#endif
3280af22 181 PL_in_clean_objs = FALSE;
4561caa4
CS		 182}
183
8990e307 184void
864dbfa3 185Perl_sv_clean_all(pTHX)
8990e307 186{
3280af22 187 PL_in_clean_all = TRUE;
0b94c7bb 188 visit(do_clean_all);
3280af22 189 PL_in_clean_all = FALSE;
8990e307 190}
463ee0b2 191
4633a7c4 192void
864dbfa3 193Perl_sv_free_arenas(pTHX)
4633a7c4
LW		 194{
195 SV* sva;
196 SV* svanext;
612f20c3 197 XPV *arena, *arenanext;
4633a7c4
LW		 198
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
201
3280af22 202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
4633a7c4
LW		 203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
206
207 if (!SvFAKE(sva))
1edc1566 208 Safefree((void *)sva);
4633a7c4 209 }
5f05dabc 210
612f20c3
GS		 211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
213 Safefree(arena);
214 }
215 PL_xiv_arenaroot = 0;
216
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
219 Safefree(arena);
220 }
221 PL_xnv_arenaroot = 0;
222
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
225 Safefree(arena);
226 }
227 PL_xrv_arenaroot = 0;
228
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
231 Safefree(arena);
232 }
233 PL_xpv_arenaroot = 0;
234
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
237 Safefree(arena);
238 }
239 PL_xpviv_arenaroot = 0;
240
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
243 Safefree(arena);
244 }
245 PL_xpvnv_arenaroot = 0;
246
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
249 Safefree(arena);
250 }
251 PL_xpvcv_arenaroot = 0;
252
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
255 Safefree(arena);
256 }
257 PL_xpvav_arenaroot = 0;
258
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
261 Safefree(arena);
262 }
263 PL_xpvhv_arenaroot = 0;
264
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
267 Safefree(arena);
268 }
269 PL_xpvmg_arenaroot = 0;
270
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
273 Safefree(arena);
274 }
275 PL_xpvlv_arenaroot = 0;
276
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
279 Safefree(arena);
280 }
281 PL_xpvbm_arenaroot = 0;
282
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
285 Safefree(arena);
286 }
287 PL_he_arenaroot = 0;
288
3280af22
NIS		 289 if (PL_nice_chunk)
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
293 PL_sv_arenaroot = 0;
294 PL_sv_root = 0;
4633a7c4
LW		 295}
296
1d7c1841
GS		 297void
298Perl_report_uninit(pTHX)
299{
300 if (PL_op)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
303 else
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
305}
306
76e3520e 307STATIC XPVIV*
cea2e8a9 308S_new_xiv(pTHX)
463ee0b2 309{
ea7c11a3 310 IV* xiv;
cbe51380
GS		 311 LOCK_SV_MUTEX;
312 if (!PL_xiv_root)
313 more_xiv();
314 xiv = PL_xiv_root;
315 /*
316 * See comment in more_xiv() -- RAM.
317 */
318 PL_xiv_root = *(IV**)xiv;
319 UNLOCK_SV_MUTEX;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
463ee0b2
LW		 321}
322
76e3520e 323STATIC void
cea2e8a9 324S_del_xiv(pTHX_ XPVIV *p)
463ee0b2 325{
23e6a22f 326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
cbe51380 327 LOCK_SV_MUTEX;
3280af22
NIS		 328 *(IV**)xiv = PL_xiv_root;
329 PL_xiv_root = xiv;
cbe51380 330 UNLOCK_SV_MUTEX;
463ee0b2
LW		 331}
332
cbe51380 333STATIC void
cea2e8a9 334S_more_xiv(pTHX)
463ee0b2 335{
ea7c11a3
SM		 336 register IV* xiv;
337 register IV* xivend;
8c52afec
IZ		 338 XPV* ptr;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
3280af22
NIS		 340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
a0d0e21e 342
ea7c11a3
SM		 343 xiv = (IV*) ptr;
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
3280af22 346 PL_xiv_root = xiv;
463ee0b2 347 while (xiv < xivend) {
ea7c11a3 348 *(IV**)xiv = (IV *)(xiv + 1);
463ee0b2
LW		 349 xiv++;
350 }
ea7c11a3 351 *(IV**)xiv = 0;
463ee0b2
LW		 352}
353
76e3520e 354STATIC XPVNV*
cea2e8a9 355S_new_xnv(pTHX)
463ee0b2 356{
65202027 357 NV* xnv;
cbe51380
GS		 358 LOCK_SV_MUTEX;
359 if (!PL_xnv_root)
360 more_xnv();
361 xnv = PL_xnv_root;
65202027 362 PL_xnv_root = *(NV**)xnv;
cbe51380
GS		 363 UNLOCK_SV_MUTEX;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
463ee0b2
LW		 365}
366
76e3520e 367STATIC void
cea2e8a9 368S_del_xnv(pTHX_ XPVNV *p)
463ee0b2 369{
65202027 370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
cbe51380 371 LOCK_SV_MUTEX;
65202027 372 *(NV**)xnv = PL_xnv_root;
3280af22 373 PL_xnv_root = xnv;
cbe51380 374 UNLOCK_SV_MUTEX;
463ee0b2
LW		 375}
376
cbe51380 377STATIC void
cea2e8a9 378S_more_xnv(pTHX)
463ee0b2 379{
65202027
DS		 380 register NV* xnv;
381 register NV* xnvend;
612f20c3
GS		 382 XPV *ptr;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
386
387 xnv = (NV*) ptr;
65202027
DS		 388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
3280af22 390 PL_xnv_root = xnv;
463ee0b2 391 while (xnv < xnvend) {
65202027 392 *(NV**)xnv = (NV*)(xnv + 1);
463ee0b2
LW		 393 xnv++;
394 }
65202027 395 *(NV**)xnv = 0;
463ee0b2
LW		 396}
397
76e3520e 398STATIC XRV*
cea2e8a9 399S_new_xrv(pTHX)
ed6116ce
LW		 400{
401 XRV* xrv;
cbe51380
GS		 402 LOCK_SV_MUTEX;
403 if (!PL_xrv_root)
404 more_xrv();
405 xrv = PL_xrv_root;
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
407 UNLOCK_SV_MUTEX;
408 return xrv;
ed6116ce
LW		 409}
410
76e3520e 411STATIC void
cea2e8a9 412S_del_xrv(pTHX_ XRV *p)
ed6116ce 413{
cbe51380 414 LOCK_SV_MUTEX;
3280af22
NIS		 415 p->xrv_rv = (SV*)PL_xrv_root;
416 PL_xrv_root = p;
cbe51380 417 UNLOCK_SV_MUTEX;
ed6116ce
LW		 418}
419
cbe51380 420STATIC void
cea2e8a9 421S_more_xrv(pTHX)
ed6116ce 422{
ed6116ce
LW		 423 register XRV* xrv;
424 register XRV* xrvend;
612f20c3
GS		 425 XPV *ptr;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
429
430 xrv = (XRV*) ptr;
ed6116ce 431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
612f20c3
GS		 432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
433 PL_xrv_root = xrv;
ed6116ce
LW		 434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
436 xrv++;
437 }
438 xrv->xrv_rv = 0;
ed6116ce
LW		 439}
440
76e3520e 441STATIC XPV*
cea2e8a9 442S_new_xpv(pTHX)
463ee0b2
LW		 443{
444 XPV* xpv;
cbe51380
GS		 445 LOCK_SV_MUTEX;
446 if (!PL_xpv_root)
447 more_xpv();
448 xpv = PL_xpv_root;
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
450 UNLOCK_SV_MUTEX;
451 return xpv;
463ee0b2
LW		 452}
453
76e3520e 454STATIC void
cea2e8a9 455S_del_xpv(pTHX_ XPV *p)
463ee0b2 456{
cbe51380 457 LOCK_SV_MUTEX;
3280af22
NIS		 458 p->xpv_pv = (char*)PL_xpv_root;
459 PL_xpv_root = p;
cbe51380 460 UNLOCK_SV_MUTEX;
463ee0b2
LW		 461}
462
cbe51380 463STATIC void
cea2e8a9 464S_more_xpv(pTHX)
463ee0b2 465{
463ee0b2
LW		 466 register XPV* xpv;
467 register XPV* xpvend;
612f20c3
GS		 468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
471
463ee0b2 472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
612f20c3 473 PL_xpv_root = ++xpv;
463ee0b2
LW		 474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
476 xpv++;
477 }
478 xpv->xpv_pv = 0;
463ee0b2
LW		 479}
480
932e9ff9
VB		 481STATIC XPVIV*
482S_new_xpviv(pTHX)
483{
484 XPVIV* xpviv;
485 LOCK_SV_MUTEX;
486 if (!PL_xpviv_root)
487 more_xpviv();
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
490 UNLOCK_SV_MUTEX;
491 return xpviv;
492}
493
494STATIC void
495S_del_xpviv(pTHX_ XPVIV *p)
496{
497 LOCK_SV_MUTEX;
498 p->xpv_pv = (char*)PL_xpviv_root;
499 PL_xpviv_root = p;
500 UNLOCK_SV_MUTEX;
501}
502
932e9ff9
VB		 503STATIC void
504S_more_xpviv(pTHX)
505{
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
612f20c3
GS		 508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
511
932e9ff9 512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
612f20c3 513 PL_xpviv_root = ++xpviv;
932e9ff9
VB		 514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
516 xpviv++;
517 }
518 xpviv->xpv_pv = 0;
519}
520
932e9ff9
VB		 521STATIC XPVNV*
522S_new_xpvnv(pTHX)
523{
524 XPVNV* xpvnv;
525 LOCK_SV_MUTEX;
526 if (!PL_xpvnv_root)
527 more_xpvnv();
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
530 UNLOCK_SV_MUTEX;
531 return xpvnv;
532}
533
534STATIC void
535S_del_xpvnv(pTHX_ XPVNV *p)
536{
537 LOCK_SV_MUTEX;
538 p->xpv_pv = (char*)PL_xpvnv_root;
539 PL_xpvnv_root = p;
540 UNLOCK_SV_MUTEX;
541}
542
932e9ff9
VB		 543STATIC void
544S_more_xpvnv(pTHX)
545{
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
612f20c3
GS		 548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
551
932e9ff9 552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
612f20c3 553 PL_xpvnv_root = ++xpvnv;
932e9ff9
VB		 554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
556 xpvnv++;
557 }
558 xpvnv->xpv_pv = 0;
559}
560
932e9ff9
VB		 561STATIC XPVCV*
562S_new_xpvcv(pTHX)
563{
564 XPVCV* xpvcv;
565 LOCK_SV_MUTEX;
566 if (!PL_xpvcv_root)
567 more_xpvcv();
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
570 UNLOCK_SV_MUTEX;
571 return xpvcv;
572}
573
574STATIC void
575S_del_xpvcv(pTHX_ XPVCV *p)
576{
577 LOCK_SV_MUTEX;
578 p->xpv_pv = (char*)PL_xpvcv_root;
579 PL_xpvcv_root = p;
580 UNLOCK_SV_MUTEX;
581}
582
932e9ff9
VB		 583STATIC void
584S_more_xpvcv(pTHX)
585{
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
612f20c3
GS		 588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
591
932e9ff9 592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
612f20c3 593 PL_xpvcv_root = ++xpvcv;
932e9ff9
VB		 594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
596 xpvcv++;
597 }
598 xpvcv->xpv_pv = 0;
599}
600
932e9ff9
VB		 601STATIC XPVAV*
602S_new_xpvav(pTHX)
603{
604 XPVAV* xpvav;
605 LOCK_SV_MUTEX;
606 if (!PL_xpvav_root)
607 more_xpvav();
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
610 UNLOCK_SV_MUTEX;
611 return xpvav;
612}
613
614STATIC void
615S_del_xpvav(pTHX_ XPVAV *p)
616{
617 LOCK_SV_MUTEX;
618 p->xav_array = (char*)PL_xpvav_root;
619 PL_xpvav_root = p;
620 UNLOCK_SV_MUTEX;
621}
622
932e9ff9
VB		 623STATIC void
624S_more_xpvav(pTHX)
625{
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
612f20c3
GS		 628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
631
932e9ff9 632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
612f20c3 633 PL_xpvav_root = ++xpvav;
932e9ff9
VB		 634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
636 xpvav++;
637 }
638 xpvav->xav_array = 0;
639}
640
932e9ff9
VB		 641STATIC XPVHV*
642S_new_xpvhv(pTHX)
643{
644 XPVHV* xpvhv;
645 LOCK_SV_MUTEX;
646 if (!PL_xpvhv_root)
647 more_xpvhv();
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
650 UNLOCK_SV_MUTEX;
651 return xpvhv;
652}
653
654STATIC void
655S_del_xpvhv(pTHX_ XPVHV *p)
656{
657 LOCK_SV_MUTEX;
658 p->xhv_array = (char*)PL_xpvhv_root;
659 PL_xpvhv_root = p;
660 UNLOCK_SV_MUTEX;
661}
662
932e9ff9
VB		 663STATIC void
664S_more_xpvhv(pTHX)
665{
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
612f20c3
GS		 668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
671
932e9ff9 672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
612f20c3 673 PL_xpvhv_root = ++xpvhv;
932e9ff9
VB		 674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
676 xpvhv++;
677 }
678 xpvhv->xhv_array = 0;
679}
680
932e9ff9
VB		 681STATIC XPVMG*
682S_new_xpvmg(pTHX)
683{
684 XPVMG* xpvmg;
685 LOCK_SV_MUTEX;
686 if (!PL_xpvmg_root)
687 more_xpvmg();
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
690 UNLOCK_SV_MUTEX;
691 return xpvmg;
692}
693
694STATIC void
695S_del_xpvmg(pTHX_ XPVMG *p)
696{
697 LOCK_SV_MUTEX;
698 p->xpv_pv = (char*)PL_xpvmg_root;
699 PL_xpvmg_root = p;
700 UNLOCK_SV_MUTEX;
701}
702
932e9ff9
VB		 703STATIC void
704S_more_xpvmg(pTHX)
705{
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
612f20c3
GS		 708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
711
932e9ff9 712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
612f20c3 713 PL_xpvmg_root = ++xpvmg;
932e9ff9
VB		 714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
716 xpvmg++;
717 }
718 xpvmg->xpv_pv = 0;
719}
720
932e9ff9
VB		 721STATIC XPVLV*
722S_new_xpvlv(pTHX)
723{
724 XPVLV* xpvlv;
725 LOCK_SV_MUTEX;
726 if (!PL_xpvlv_root)
727 more_xpvlv();
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
730 UNLOCK_SV_MUTEX;
731 return xpvlv;
732}
733
734STATIC void
735S_del_xpvlv(pTHX_ XPVLV *p)
736{
737 LOCK_SV_MUTEX;
738 p->xpv_pv = (char*)PL_xpvlv_root;
739 PL_xpvlv_root = p;
740 UNLOCK_SV_MUTEX;
741}
742
932e9ff9
VB		 743STATIC void
744S_more_xpvlv(pTHX)
745{
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
612f20c3
GS		 748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
751
932e9ff9 752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
612f20c3 753 PL_xpvlv_root = ++xpvlv;
932e9ff9
VB		 754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
756 xpvlv++;
757 }
758 xpvlv->xpv_pv = 0;
759}
760
932e9ff9
VB		 761STATIC XPVBM*
762S_new_xpvbm(pTHX)
763{
764 XPVBM* xpvbm;
765 LOCK_SV_MUTEX;
766 if (!PL_xpvbm_root)
767 more_xpvbm();
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
770 UNLOCK_SV_MUTEX;
771 return xpvbm;
772}
773
774STATIC void
775S_del_xpvbm(pTHX_ XPVBM *p)
776{
777 LOCK_SV_MUTEX;
778 p->xpv_pv = (char*)PL_xpvbm_root;
779 PL_xpvbm_root = p;
780 UNLOCK_SV_MUTEX;
781}
782
932e9ff9
VB		 783STATIC void
784S_more_xpvbm(pTHX)
785{
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
612f20c3
GS		 788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
791
932e9ff9 792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
612f20c3 793 PL_xpvbm_root = ++xpvbm;
932e9ff9
VB		 794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
796 xpvbm++;
797 }
798 xpvbm->xpv_pv = 0;
799}
800
d33b2eba
GS		 801#ifdef LEAKTEST
802# define my_safemalloc(s) (void*)safexmalloc(717,s)
803# define my_safefree(p) safexfree((char*)p)
804#else
805# define my_safemalloc(s) (void*)safemalloc(s)
806# define my_safefree(p) safefree((char*)p)
807#endif
463ee0b2 808
d33b2eba 809#ifdef PURIFY
463ee0b2 810
d33b2eba
GS		 811#define new_XIV() my_safemalloc(sizeof(XPVIV))
812#define del_XIV(p) my_safefree(p)
ed6116ce 813
d33b2eba
GS		 814#define new_XNV() my_safemalloc(sizeof(XPVNV))
815#define del_XNV(p) my_safefree(p)
463ee0b2 816
d33b2eba
GS		 817#define new_XRV() my_safemalloc(sizeof(XRV))
818#define del_XRV(p) my_safefree(p)
8c52afec 819
d33b2eba
GS		 820#define new_XPV() my_safemalloc(sizeof(XPV))
821#define del_XPV(p) my_safefree(p)
9b94d1dd 822
d33b2eba
GS		 823#define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824#define del_XPVIV(p) my_safefree(p)
932e9ff9 825
d33b2eba
GS		 826#define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827#define del_XPVNV(p) my_safefree(p)
932e9ff9 828
d33b2eba
GS		 829#define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830#define del_XPVCV(p) my_safefree(p)
932e9ff9 831
d33b2eba
GS		 832#define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833#define del_XPVAV(p) my_safefree(p)
834
835#define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836#define del_XPVHV(p) my_safefree(p)
8c52afec 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)
8c52afec 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)
889
890#define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891#define del_XPVFM(p) my_safefree(p)
8c52afec 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
916 if (SvTYPE(sv) == mt)
917 return TRUE;
918
a5f75d66
AD		 919 if (mt < SVt_PVIV)
920 (void)SvOOK_off(sv);
921
79072805
LW		 922 switch (SvTYPE(sv)) {
923 case SVt_NULL:
924 pv = 0;
925 cur = 0;
926 len = 0;
927 iv = 0;
928 nv = 0.0;
929 magic = 0;
930 stash = 0;
931 break;
79072805
LW		 932 case SVt_IV:
933 pv = 0;
934 cur = 0;
935 len = 0;
463ee0b2 936 iv = SvIVX(sv);
65202027 937 nv = (NV)SvIVX(sv);
79072805
LW		 938 del_XIV(SvANY(sv));
939 magic = 0;
940 stash = 0;
ed6116ce 941 if (mt == SVt_NV)
463ee0b2 942 mt = SVt_PVNV;
ed6116ce
LW		 943 else if (mt < SVt_PVIV)
944 mt = SVt_PVIV;
79072805
LW		 945 break;
946 case SVt_NV:
947 pv = 0;
948 cur = 0;
949 len = 0;
463ee0b2 950 nv = SvNVX(sv);
1bd302c3 951 iv = I_V(nv);
79072805
LW		 952 magic = 0;
953 stash = 0;
954 del_XNV(SvANY(sv));
955 SvANY(sv) = 0;
ed6116ce 956 if (mt < SVt_PVNV)
79072805
LW		 957 mt = SVt_PVNV;
958 break;
ed6116ce
LW		 959 case SVt_RV:
960 pv = (char*)SvRV(sv);
961 cur = 0;
962 len = 0;
56431972
RB		 963 iv = PTR2IV(pv);
964 nv = PTR2NV(pv);
ed6116ce
LW		 965 del_XRV(SvANY(sv));
966 magic = 0;
967 stash = 0;
968 break;
79072805 969 case SVt_PV:
463ee0b2 970 pv = SvPVX(sv);
79072805
LW		 971 cur = SvCUR(sv);
972 len = SvLEN(sv);
973 iv = 0;
974 nv = 0.0;
975 magic = 0;
976 stash = 0;
977 del_XPV(SvANY(sv));
748a9306
LW		 978 if (mt <= SVt_IV)
979 mt = SVt_PVIV;
980 else if (mt == SVt_NV)
981 mt = SVt_PVNV;
79072805
LW		 982 break;
983 case SVt_PVIV:
463ee0b2 984 pv = SvPVX(sv);
79072805
LW		 985 cur = SvCUR(sv);
986 len = SvLEN(sv);
463ee0b2 987 iv = SvIVX(sv);
79072805
LW		 988 nv = 0.0;
989 magic = 0;
990 stash = 0;
991 del_XPVIV(SvANY(sv));
992 break;
993 case SVt_PVNV:
463ee0b2 994 pv = SvPVX(sv);
79072805
LW		 995 cur = SvCUR(sv);
996 len = SvLEN(sv);
463ee0b2
LW		 997 iv = SvIVX(sv);
998 nv = SvNVX(sv);
79072805
LW		 999 magic = 0;
1000 stash = 0;
1001 del_XPVNV(SvANY(sv));
1002 break;
1003 case SVt_PVMG:
463ee0b2 1004 pv = SvPVX(sv);
79072805
LW		 1005 cur = SvCUR(sv);
1006 len = SvLEN(sv);
463ee0b2
LW		 1007 iv = SvIVX(sv);
1008 nv = SvNVX(sv);
79072805
LW		 1009 magic = SvMAGIC(sv);
1010 stash = SvSTASH(sv);
1011 del_XPVMG(SvANY(sv));
1012 break;
1013 default:
cea2e8a9 1014 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
79072805
LW		 1015 }
1016
1017 switch (mt) {
1018 case SVt_NULL:
cea2e8a9 1019 Perl_croak(aTHX_ "Can't upgrade to undef");
79072805
LW		 1020 case SVt_IV:
1021 SvANY(sv) = new_XIV();
463ee0b2 1022 SvIVX(sv) = iv;
79072805
LW		 1023 break;
1024 case SVt_NV:
1025 SvANY(sv) = new_XNV();
463ee0b2 1026 SvNVX(sv) = nv;
79072805 1027 break;
ed6116ce
LW		 1028 case SVt_RV:
1029 SvANY(sv) = new_XRV();
1030 SvRV(sv) = (SV*)pv;
ed6116ce 1031 break;
79072805
LW		 1032 case SVt_PV:
1033 SvANY(sv) = new_XPV();
463ee0b2 1034 SvPVX(sv) = pv;
79072805
LW		 1035 SvCUR(sv) = cur;
1036 SvLEN(sv) = len;
1037 break;
1038 case SVt_PVIV:
1039 SvANY(sv) = new_XPVIV();
463ee0b2 1040 SvPVX(sv) = pv;
79072805
LW		 1041 SvCUR(sv) = cur;
1042 SvLEN(sv) = len;
463ee0b2 1043 SvIVX(sv) = iv;
79072805 1044 if (SvNIOK(sv))
a0d0e21e 1045 (void)SvIOK_on(sv);
79072805
LW		 1046 SvNOK_off(sv);
1047 break;
1048 case SVt_PVNV:
1049 SvANY(sv) = new_XPVNV();
463ee0b2 1050 SvPVX(sv) = pv;
79072805
LW		 1051 SvCUR(sv) = cur;
1052 SvLEN(sv) = len;
463ee0b2
LW		 1053 SvIVX(sv) = iv;
1054 SvNVX(sv) = nv;
79072805
LW		 1055 break;
1056 case SVt_PVMG:
1057 SvANY(sv) = new_XPVMG();
463ee0b2 1058 SvPVX(sv) = pv;
79072805
LW		 1059 SvCUR(sv) = cur;
1060 SvLEN(sv) = len;
463ee0b2
LW		 1061 SvIVX(sv) = iv;
1062 SvNVX(sv) = nv;
79072805
LW		 1063 SvMAGIC(sv) = magic;
1064 SvSTASH(sv) = stash;
1065 break;
1066 case SVt_PVLV:
1067 SvANY(sv) = new_XPVLV();
463ee0b2 1068 SvPVX(sv) = pv;
79072805
LW		 1069 SvCUR(sv) = cur;
1070 SvLEN(sv) = len;
463ee0b2
LW		 1071 SvIVX(sv) = iv;
1072 SvNVX(sv) = nv;
79072805
LW		 1073 SvMAGIC(sv) = magic;
1074 SvSTASH(sv) = stash;
1075 LvTARGOFF(sv) = 0;
1076 LvTARGLEN(sv) = 0;
1077 LvTARG(sv) = 0;
1078 LvTYPE(sv) = 0;
1079 break;
1080 case SVt_PVAV:
1081 SvANY(sv) = new_XPVAV();
463ee0b2
LW		 1082 if (pv)
1083 Safefree(pv);
2304df62 1084 SvPVX(sv) = 0;
d1bf51dd 1085 AvMAX(sv) = -1;
93965878 1086 AvFILLp(sv) = -1;
463ee0b2
LW		 1087 SvIVX(sv) = 0;
1088 SvNVX(sv) = 0.0;
1089 SvMAGIC(sv) = magic;
1090 SvSTASH(sv) = stash;
1091 AvALLOC(sv) = 0;
79072805
LW		 1092 AvARYLEN(sv) = 0;
1093 AvFLAGS(sv) = 0;
1094 break;
1095 case SVt_PVHV:
1096 SvANY(sv) = new_XPVHV();
463ee0b2
LW		 1097 if (pv)
1098 Safefree(pv);
1099 SvPVX(sv) = 0;
1100 HvFILL(sv) = 0;
1101 HvMAX(sv) = 0;
1102 HvKEYS(sv) = 0;
1103 SvNVX(sv) = 0.0;
79072805
LW		 1104 SvMAGIC(sv) = magic;
1105 SvSTASH(sv) = stash;
79072805
LW		 1106 HvRITER(sv) = 0;
1107 HvEITER(sv) = 0;
1108 HvPMROOT(sv) = 0;
1109 HvNAME(sv) = 0;
79072805
LW		 1110 break;
1111 case SVt_PVCV:
1112 SvANY(sv) = new_XPVCV();
748a9306 1113 Zero(SvANY(sv), 1, XPVCV);
463ee0b2 1114 SvPVX(sv) = pv;
79072805
LW		 1115 SvCUR(sv) = cur;
1116 SvLEN(sv) = len;
463ee0b2
LW		 1117 SvIVX(sv) = iv;
1118 SvNVX(sv) = nv;
79072805
LW		 1119 SvMAGIC(sv) = magic;
1120 SvSTASH(sv) = stash;
79072805
LW		 1121 break;
1122 case SVt_PVGV:
1123 SvANY(sv) = new_XPVGV();
463ee0b2 1124 SvPVX(sv) = pv;
79072805
LW		 1125 SvCUR(sv) = cur;
1126 SvLEN(sv) = len;
463ee0b2
LW		 1127 SvIVX(sv) = iv;
1128 SvNVX(sv) = nv;
79072805
LW		 1129 SvMAGIC(sv) = magic;
1130 SvSTASH(sv) = stash;
93a17b20 1131 GvGP(sv) = 0;
79072805
LW		 1132 GvNAME(sv) = 0;
1133 GvNAMELEN(sv) = 0;
1134 GvSTASH(sv) = 0;
a5f75d66 1135 GvFLAGS(sv) = 0;
79072805
LW		 1136 break;
1137 case SVt_PVBM:
1138 SvANY(sv) = new_XPVBM();
463ee0b2 1139 SvPVX(sv) = pv;
79072805
LW		 1140 SvCUR(sv) = cur;
1141 SvLEN(sv) = len;
463ee0b2
LW		 1142 SvIVX(sv) = iv;
1143 SvNVX(sv) = nv;
79072805
LW		 1144 SvMAGIC(sv) = magic;
1145 SvSTASH(sv) = stash;
1146 BmRARE(sv) = 0;
1147 BmUSEFUL(sv) = 0;
1148 BmPREVIOUS(sv) = 0;
1149 break;
1150 case SVt_PVFM:
1151 SvANY(sv) = new_XPVFM();
748a9306 1152 Zero(SvANY(sv), 1, XPVFM);
463ee0b2 1153 SvPVX(sv) = pv;
79072805
LW		 1154 SvCUR(sv) = cur;
1155 SvLEN(sv) = len;
463ee0b2
LW		 1156 SvIVX(sv) = iv;
1157 SvNVX(sv) = nv;
79072805
LW		 1158 SvMAGIC(sv) = magic;
1159 SvSTASH(sv) = stash;
79072805 1160 break;
8990e307
LW		 1161 case SVt_PVIO:
1162 SvANY(sv) = new_XPVIO();
748a9306 1163 Zero(SvANY(sv), 1, XPVIO);
8990e307
LW		 1164 SvPVX(sv) = pv;
1165 SvCUR(sv) = cur;
1166 SvLEN(sv) = len;
1167 SvIVX(sv) = iv;
1168 SvNVX(sv) = nv;
1169 SvMAGIC(sv) = magic;
1170 SvSTASH(sv) = stash;
85e6fe83 1171 IoPAGE_LEN(sv) = 60;
8990e307
LW		 1172 break;
1173 }
1174 SvFLAGS(sv) &= ~SVTYPEMASK;
1175 SvFLAGS(sv) |= mt;
79072805
LW		 1176 return TRUE;
1177}
1178
79072805 1179int
864dbfa3 1180Perl_sv_backoff(pTHX_ register SV *sv)
79072805
LW		 1181{
1182 assert(SvOOK(sv));
463ee0b2
LW		 1183 if (SvIVX(sv)) {
1184 char *s = SvPVX(sv);
1185 SvLEN(sv) += SvIVX(sv);
1186 SvPVX(sv) -= SvIVX(sv);
79072805 1187 SvIV_set(sv, 0);
463ee0b2 1188 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
79072805
LW		 1189 }
1190 SvFLAGS(sv) &= ~SVf_OOK;
a0d0e21e 1191 return 0;
79072805
LW		 1192}
1193
954c1994
GS		 1194/*
1195=for apidoc sv_grow
1196
1197Expands the character buffer in the SV. This will use C<sv_unref> and will
1198upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1199Use C<SvGROW>.
1200
1201=cut
1202*/
1203
79072805 1204char *
864dbfa3 1205Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
79072805
LW		 1206{
1207 register char *s;
1208
55497cff 1209#ifdef HAS_64K_LIMIT
79072805 1210 if (newlen >= 0x10000) {
1d7c1841
GS		 1211 PerlIO_printf(Perl_debug_log,
1212 "Allocation too large: %"UVxf"\n", (UV)newlen);
79072805
LW		 1213 my_exit(1);
1214 }
55497cff 1215#endif /* HAS_64K_LIMIT */
a0d0e21e
LW		 1216 if (SvROK(sv))
1217 sv_unref(sv);
79072805
LW		 1218 if (SvTYPE(sv) < SVt_PV) {
1219 sv_upgrade(sv, SVt_PV);
463ee0b2 1220 s = SvPVX(sv);
79072805
LW		 1221 }
1222 else if (SvOOK(sv)) { /* pv is offset? */
1223 sv_backoff(sv);
463ee0b2 1224 s = SvPVX(sv);
79072805
LW		 1225 if (newlen > SvLEN(sv))
1226 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
c6f8c383
GA		 1227#ifdef HAS_64K_LIMIT
1228 if (newlen >= 0x10000)
1229 newlen = 0xFFFF;
1230#endif
79072805
LW		 1231 }
1232 else
463ee0b2 1233 s = SvPVX(sv);
79072805 1234 if (newlen > SvLEN(sv)) { /* need more room? */
8d6dde3e 1235 if (SvLEN(sv) && s) {
f5a32c7f 1236#if defined(MYMALLOC) && !defined(LEAKTEST)
8d6dde3e
IZ		 1237 STRLEN l = malloced_size((void*)SvPVX(sv));
1238 if (newlen <= l) {
1239 SvLEN_set(sv, l);
1240 return s;
1241 } else
c70c8a0a 1242#endif
79072805 1243 Renew(s,newlen,char);
8d6dde3e 1244 }
79072805
LW		 1245 else
1246 New(703,s,newlen,char);
1247 SvPV_set(sv, s);
1248 SvLEN_set(sv, newlen);
1249 }
1250 return s;
1251}
1252
954c1994
GS		 1253/*
1254=for apidoc sv_setiv
1255
1256Copies an integer into the given SV. Does not handle 'set' magic. See
1257C<sv_setiv_mg>.
1258
1259=cut
1260*/
1261
79072805 1262void
864dbfa3 1263Perl_sv_setiv(pTHX_ register SV *sv, IV i)
79072805 1264{
2213622d 1265 SV_CHECK_THINKFIRST(sv);
463ee0b2
LW		 1266 switch (SvTYPE(sv)) {
1267 case SVt_NULL:
79072805 1268 sv_upgrade(sv, SVt_IV);
463ee0b2
LW		 1269 break;
1270 case SVt_NV:
1271 sv_upgrade(sv, SVt_PVNV);
1272 break;
ed6116ce 1273 case SVt_RV:
463ee0b2 1274 case SVt_PV:
79072805 1275 sv_upgrade(sv, SVt_PVIV);
463ee0b2 1276 break;
a0d0e21e
LW		 1277
1278 case SVt_PVGV:
a0d0e21e
LW		 1279 case SVt_PVAV:
1280 case SVt_PVHV:
1281 case SVt_PVCV:
1282 case SVt_PVFM:
1283 case SVt_PVIO:
11343788
MB		 1284 {
1285 dTHR;
cea2e8a9 1286 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
22c35a8c 1287 PL_op_desc[PL_op->op_type]);
11343788 1288 }
463ee0b2 1289 }
a0d0e21e 1290 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1291 SvIVX(sv) = i;
463ee0b2 1292 SvTAINT(sv);
79072805
LW		 1293}
1294
954c1994
GS		 1295/*
1296=for apidoc sv_setiv_mg
1297
1298Like C<sv_setiv>, but also handles 'set' magic.
1299
1300=cut
1301*/
1302
79072805 1303void
864dbfa3 1304Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1305{
1306 sv_setiv(sv,i);
1307 SvSETMAGIC(sv);
1308}
1309
954c1994
GS		 1310/*
1311=for apidoc sv_setuv
1312
1313Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1314See C<sv_setuv_mg>.
1315
1316=cut
1317*/
1318
ef50df4b 1319void
864dbfa3 1320Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1321{
25da4f38
IZ		 1322 sv_setiv(sv, 0);
1323 SvIsUV_on(sv);
1324 SvUVX(sv) = u;
55497cff 1325}
1326
954c1994
GS		 1327/*
1328=for apidoc sv_setuv_mg
1329
1330Like C<sv_setuv>, but also handles 'set' magic.
1331
1332=cut
1333*/
1334
55497cff 1335void
864dbfa3 1336Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b
GS		 1337{
1338 sv_setuv(sv,u);
1339 SvSETMAGIC(sv);
1340}
1341
954c1994
GS		 1342/*
1343=for apidoc sv_setnv
1344
1345Copies a double into the given SV. Does not handle 'set' magic. See
1346C<sv_setnv_mg>.
1347
1348=cut
1349*/
1350
ef50df4b 1351void
65202027 1352Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1353{
2213622d 1354 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1355 switch (SvTYPE(sv)) {
1356 case SVt_NULL:
1357 case SVt_IV:
79072805 1358 sv_upgrade(sv, SVt_NV);
a0d0e21e 1359 break;
a0d0e21e
LW		 1360 case SVt_RV:
1361 case SVt_PV:
1362 case SVt_PVIV:
79072805 1363 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1364 break;
827b7e14 1365
a0d0e21e 1366 case SVt_PVGV:
a0d0e21e
LW		 1367 case SVt_PVAV:
1368 case SVt_PVHV:
1369 case SVt_PVCV:
1370 case SVt_PVFM:
1371 case SVt_PVIO:
11343788
MB		 1372 {
1373 dTHR;
cea2e8a9 1374 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
22c35a8c 1375 PL_op_name[PL_op->op_type]);
11343788 1376 }
79072805 1377 }
463ee0b2 1378 SvNVX(sv) = num;
a0d0e21e 1379 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1380 SvTAINT(sv);
79072805
LW		 1381}
1382
954c1994
GS		 1383/*
1384=for apidoc sv_setnv_mg
1385
1386Like C<sv_setnv>, but also handles 'set' magic.
1387
1388=cut
1389*/
1390
ef50df4b 1391void
65202027 1392Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1393{
1394 sv_setnv(sv,num);
1395 SvSETMAGIC(sv);
1396}
1397
76e3520e 1398STATIC void
cea2e8a9 1399S_not_a_number(pTHX_ SV *sv)
a0d0e21e 1400{
11343788 1401 dTHR;
a0d0e21e
LW		 1402 char tmpbuf[64];
1403 char *d = tmpbuf;
1404 char *s;
dc28f22b
GA		 1405 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1406 /* each *s can expand to 4 chars + "...\0",
1407 i.e. need room for 8 chars */
a0d0e21e 1408
dc28f22b 1409 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1410 int ch = *s & 0xFF;
1411 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1412 *d++ = 'M';
1413 *d++ = '-';
1414 ch &= 127;
1415 }
bbce6d69 1416 if (ch == '\n') {
1417 *d++ = '\\';
1418 *d++ = 'n';
1419 }
1420 else if (ch == '\r') {
1421 *d++ = '\\';
1422 *d++ = 'r';
1423 }
1424 else if (ch == '\f') {
1425 *d++ = '\\';
1426 *d++ = 'f';
1427 }
1428 else if (ch == '\\') {
1429 *d++ = '\\';
1430 *d++ = '\\';
1431 }
1432 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1433 *d++ = ch;
1434 else {
1435 *d++ = '^';
bbce6d69 1436 *d++ = toCTRL(ch);
a0d0e21e
LW		 1437 }
1438 }
1439 if (*s) {
1440 *d++ = '.';
1441 *d++ = '.';
1442 *d++ = '.';
1443 }
1444 *d = '\0';
1445
533c011a 1446 if (PL_op)
42d38218
MS		 1447 Perl_warner(aTHX_ WARN_NUMERIC,
1448 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1449 PL_op_desc[PL_op->op_type]);
a0d0e21e 1450 else
42d38218
MS		 1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1453}
1454
cf2093f6 1455/* the number can be converted to integer with atol() or atoll() */
25da4f38
IZ		 1456#define IS_NUMBER_TO_INT_BY_ATOL 0x01
1457#define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1458#define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1459#define IS_NUMBER_NEG 0x08 /* not good to cache UV */
300aed98 1460#define IS_NUMBER_INFINITY 0x10 /* this is big */
25da4f38
IZ		 1461
1462/* Actually, ISO C leaves conversion of UV to IV undefined, but
1463 until proven guilty, assume that things are not that bad... */
1464
a0d0e21e 1465IV
864dbfa3 1466Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1467{
1468 if (!sv)
1469 return 0;
8990e307 1470 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1471 mg_get(sv);
1472 if (SvIOKp(sv))
1473 return SvIVX(sv);
748a9306 1474 if (SvNOKp(sv)) {
25da4f38 1475 return I_V(SvNVX(sv));
748a9306 1476 }
36477c24 1477 if (SvPOKp(sv) && SvLEN(sv))
1478 return asIV(sv);
3fe9a6f1 1479 if (!SvROK(sv)) {
d008e5eb 1480 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1481 dTHR;
d008e5eb 1482 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1483 report_uninit();
c6ee37c5 1484 }
36477c24 1485 return 0;
3fe9a6f1 1486 }
463ee0b2 1487 }
ed6116ce 1488 if (SvTHINKFIRST(sv)) {
a0d0e21e 1489 if (SvROK(sv)) {
a0d0e21e
LW		 1490 SV* tmpstr;
1491 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
9e7bc3e8 1492 return SvIV(tmpstr);
56431972 1493 return PTR2IV(SvRV(sv));
a0d0e21e 1494 }
0336b60e
IZ		 1495 if (SvREADONLY(sv) && !SvOK(sv)) {
1496 dTHR;
1497 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1498 report_uninit();
ed6116ce
LW		 1499 return 0;
1500 }
79072805 1501 }
25da4f38
IZ		 1502 if (SvIOKp(sv)) {
1503 if (SvIsUV(sv)) {
1504 return (IV)(SvUVX(sv));
1505 }
1506 else {
1507 return SvIVX(sv);
1508 }
463ee0b2 1509 }
748a9306 1510 if (SvNOKp(sv)) {
25da4f38
IZ		 1511 /* We can cache the IV/UV value even if it not good enough
1512 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1513 * NV over IV/UV.
25da4f38
IZ		 1514 */
1515
1516 if (SvTYPE(sv) == SVt_NV)
1517 sv_upgrade(sv, SVt_PVNV);
1518
a5f75d66 1519 (void)SvIOK_on(sv);
65202027 1520 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
748a9306 1521 SvIVX(sv) = I_V(SvNVX(sv));
25da4f38 1522 else {
ff68c719 1523 SvUVX(sv) = U_V(SvNVX(sv));
25da4f38
IZ		 1524 SvIsUV_on(sv);
1525 ret_iv_max:
cf2093f6 1526 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1527 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1528 PTR2UV(sv),
57def98f
JH		 1529 SvUVX(sv),
1530 SvUVX(sv)));
25da4f38
IZ		 1531 return (IV)SvUVX(sv);
1532 }
748a9306
LW		 1533 }
1534 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1535 I32 numtype = looks_like_number(sv);
1536
1537 /* We want to avoid a possible problem when we cache an IV which
1538 may be later translated to an NV, and the resulting NV is not
1539 the translation of the initial data.
1540
1541 This means that if we cache such an IV, we need to cache the
1542 NV as well. Moreover, we trade speed for space, and do not
1543 cache the NV if not needed.
1544 */
1545 if (numtype & IS_NUMBER_NOT_IV) {
1546 /* May be not an integer. Need to cache NV if we cache IV
1547 * - otherwise future conversion to NV will be wrong. */
65202027 1548 NV d;
25da4f38 1549
097ee67d 1550 d = Atof(SvPVX(sv));
25da4f38
IZ		 1551
1552 if (SvTYPE(sv) < SVt_PVNV)
1553 sv_upgrade(sv, SVt_PVNV);
1554 SvNVX(sv) = d;
1555 (void)SvNOK_on(sv);
1556 (void)SvIOK_on(sv);
65202027 1557#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1558 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1559 PTR2UV(sv), SvNVX(sv)));
65202027 1560#else
1d7c1841
GS		 1561 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1562 PTR2UV(sv), SvNVX(sv)));
65202027 1563#endif
65202027 1564 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
25da4f38
IZ		 1565 SvIVX(sv) = I_V(SvNVX(sv));
1566 else {
1567 SvUVX(sv) = U_V(SvNVX(sv));
1568 SvIsUV_on(sv);
1569 goto ret_iv_max;
1570 }
1571 }
0a3ece55
MG		 1572 else { /* The NV may be reconstructed from IV - safe to cache IV,
1573 which may be calculated by atol(). */
25da4f38
IZ		 1574 if (SvTYPE(sv) < SVt_PVIV)
1575 sv_upgrade(sv, SVt_PVIV);
25da4f38 1576 (void)SvIOK_on(sv);
0a3ece55
MG		 1577 SvIVX(sv) = Atol(SvPVX(sv));
1578 if (! numtype && ckWARN(WARN_NUMERIC))
25da4f38
IZ		 1579 not_a_number(sv);
1580 }
93a17b20 1581 }
79072805 1582 else {
11343788 1583 dTHR;
599cee73 1584 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1585 report_uninit();
25da4f38
IZ		 1586 if (SvTYPE(sv) < SVt_IV)
1587 /* Typically the caller expects that sv_any is not NULL now. */
1588 sv_upgrade(sv, SVt_IV);
a0d0e21e 1589 return 0;
79072805 1590 }
1d7c1841
GS		 1591 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1592 PTR2UV(sv),SvIVX(sv)));
25da4f38 1593 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1594}
1595
ff68c719 1596UV
864dbfa3 1597Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1598{
1599 if (!sv)
1600 return 0;
1601 if (SvGMAGICAL(sv)) {
1602 mg_get(sv);
1603 if (SvIOKp(sv))
1604 return SvUVX(sv);
1605 if (SvNOKp(sv))
1606 return U_V(SvNVX(sv));
36477c24 1607 if (SvPOKp(sv) && SvLEN(sv))
1608 return asUV(sv);
3fe9a6f1 1609 if (!SvROK(sv)) {
d008e5eb 1610 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1611 dTHR;
d008e5eb 1612 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1613 report_uninit();
c6ee37c5 1614 }
36477c24 1615 return 0;
3fe9a6f1 1616 }
ff68c719 1617 }
1618 if (SvTHINKFIRST(sv)) {
1619 if (SvROK(sv)) {
ff68c719 1620 SV* tmpstr;
1621 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
9e7bc3e8 1622 return SvUV(tmpstr);
56431972 1623 return PTR2UV(SvRV(sv));
ff68c719 1624 }
0336b60e
IZ		 1625 if (SvREADONLY(sv) && !SvOK(sv)) {
1626 dTHR;
1627 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1628 report_uninit();
ff68c719 1629 return 0;
1630 }
1631 }
25da4f38
IZ		 1632 if (SvIOKp(sv)) {
1633 if (SvIsUV(sv)) {
1634 return SvUVX(sv);
1635 }
1636 else {
1637 return (UV)SvIVX(sv);
1638 }
ff68c719 1639 }
1640 if (SvNOKp(sv)) {
25da4f38
IZ		 1641 /* We can cache the IV/UV value even if it not good enough
1642 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1643 * NV over IV/UV.
25da4f38
IZ		 1644 */
1645 if (SvTYPE(sv) == SVt_NV)
1646 sv_upgrade(sv, SVt_PVNV);
ff68c719 1647 (void)SvIOK_on(sv);
25da4f38
IZ		 1648 if (SvNVX(sv) >= -0.5) {
1649 SvIsUV_on(sv);
1650 SvUVX(sv) = U_V(SvNVX(sv));
1651 }
1652 else {
1653 SvIVX(sv) = I_V(SvNVX(sv));
1654 ret_zero:
cf2093f6 1655 DEBUG_c(PerlIO_printf(Perl_debug_log,
07270b1a 1656 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
57def98f
JH		 1657 PTR2UV(sv),
1658 SvIVX(sv),
1659 (IV)(UV)SvIVX(sv)));
25da4f38
IZ		 1660 return (UV)SvIVX(sv);
1661 }
ff68c719 1662 }
1663 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1664 I32 numtype = looks_like_number(sv);
1665
1666 /* We want to avoid a possible problem when we cache a UV which
1667 may be later translated to an NV, and the resulting NV is not
1668 the translation of the initial data.
1669
1670 This means that if we cache such a UV, we need to cache the
1671 NV as well. Moreover, we trade speed for space, and do not
1672 cache the NV if not needed.
1673 */
1674 if (numtype & IS_NUMBER_NOT_IV) {
1675 /* May be not an integer. Need to cache NV if we cache IV
1676 * - otherwise future conversion to NV will be wrong. */
65202027 1677 NV d;
25da4f38 1678
cf2093f6 1679 d = Atof(SvPVX(sv));
25da4f38
IZ		 1680
1681 if (SvTYPE(sv) < SVt_PVNV)
1682 sv_upgrade(sv, SVt_PVNV);
1683 SvNVX(sv) = d;
1684 (void)SvNOK_on(sv);
1685 (void)SvIOK_on(sv);
65202027 1686#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1687 DEBUG_c(PerlIO_printf(Perl_debug_log,
1688 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1689 PTR2UV(sv), SvNVX(sv)));
65202027 1690#else
1d7c1841
GS		 1691 DEBUG_c(PerlIO_printf(Perl_debug_log,
1692 "0x%"UVxf" 2nv(%g)\n",
1693 PTR2UV(sv), SvNVX(sv)));
65202027 1694#endif
25da4f38
IZ		 1695 if (SvNVX(sv) < -0.5) {
1696 SvIVX(sv) = I_V(SvNVX(sv));
1697 goto ret_zero;
1698 } else {
1699 SvUVX(sv) = U_V(SvNVX(sv));
1700 SvIsUV_on(sv);
1701 }
1702 }
1703 else if (numtype & IS_NUMBER_NEG) {
1704 /* The NV may be reconstructed from IV - safe to cache IV,
1705 which may be calculated by atol(). */
1706 if (SvTYPE(sv) == SVt_PV)
1707 sv_upgrade(sv, SVt_PVIV);
1708 (void)SvIOK_on(sv);
cf2093f6 1709 SvIVX(sv) = (IV)Atol(SvPVX(sv));
25da4f38
IZ		 1710 }
1711 else if (numtype) { /* Non-negative */
1712 /* The NV may be reconstructed from UV - safe to cache UV,
1713 which may be calculated by strtoul()/atol. */
1714 if (SvTYPE(sv) == SVt_PV)
1715 sv_upgrade(sv, SVt_PVIV);
1716 (void)SvIOK_on(sv);
1717 (void)SvIsUV_on(sv);
1718#ifdef HAS_STRTOUL
cf2093f6 1719 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
25da4f38
IZ		 1720#else /* no atou(), but we know the number fits into IV... */
1721 /* The only problem may be if it is negative... */
cf2093f6 1722 SvUVX(sv) = (UV)Atol(SvPVX(sv));
25da4f38
IZ		 1723#endif
1724 }
1725 else { /* Not a number. Cache 0. */
1726 dTHR;
1727
1728 if (SvTYPE(sv) < SVt_PVIV)
1729 sv_upgrade(sv, SVt_PVIV);
25da4f38
IZ		 1730 (void)SvIOK_on(sv);
1731 (void)SvIsUV_on(sv);
7b9e3c00
GS		 1732 SvUVX(sv) = 0; /* We assume that 0s have the
1733 same bitmap in IV and UV. */
25da4f38
IZ		 1734 if (ckWARN(WARN_NUMERIC))
1735 not_a_number(sv);
1736 }
ff68c719 1737 }
1738 else {
d008e5eb 1739 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1740 dTHR;
d008e5eb 1741 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1742 report_uninit();
c6ee37c5 1743 }
25da4f38
IZ		 1744 if (SvTYPE(sv) < SVt_IV)
1745 /* Typically the caller expects that sv_any is not NULL now. */
1746 sv_upgrade(sv, SVt_IV);
ff68c719 1747 return 0;
1748 }
25da4f38 1749
1d7c1841
GS		 1750 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1751 PTR2UV(sv),SvUVX(sv)));
25da4f38 1752 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 1753}
1754
65202027 1755NV
864dbfa3 1756Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 1757{
1758 if (!sv)
1759 return 0.0;
8990e307 1760 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1761 mg_get(sv);
1762 if (SvNOKp(sv))
1763 return SvNVX(sv);
a0d0e21e 1764 if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1765 dTHR;
599cee73 1766 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1767 not_a_number(sv);
097ee67d 1768 return Atof(SvPVX(sv));
a0d0e21e 1769 }
25da4f38
IZ		 1770 if (SvIOKp(sv)) {
1771 if (SvIsUV(sv))
65202027 1772 return (NV)SvUVX(sv);
25da4f38 1773 else
65202027 1774 return (NV)SvIVX(sv);
25da4f38 1775 }
16d20bd9 1776 if (!SvROK(sv)) {
d008e5eb 1777 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1778 dTHR;
d008e5eb 1779 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1780 report_uninit();
c6ee37c5 1781 }
16d20bd9
AD		 1782 return 0;
1783 }
463ee0b2 1784 }
ed6116ce 1785 if (SvTHINKFIRST(sv)) {
a0d0e21e 1786 if (SvROK(sv)) {
a0d0e21e
LW		 1787 SV* tmpstr;
1788 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
9e7bc3e8 1789 return SvNV(tmpstr);
56431972 1790 return PTR2NV(SvRV(sv));
a0d0e21e 1791 }
0336b60e 1792 if (SvREADONLY(sv) && !SvOK(sv)) {
d008e5eb 1793 dTHR;
599cee73 1794 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1795 report_uninit();
ed6116ce
LW		 1796 return 0.0;
1797 }
79072805
LW		 1798 }
1799 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 1800 if (SvTYPE(sv) == SVt_IV)
1801 sv_upgrade(sv, SVt_PVNV);
1802 else
1803 sv_upgrade(sv, SVt_NV);
572bbb43 1804#if defined(USE_LONG_DOUBLE)
097ee67d 1805 DEBUG_c({
f93f4e46 1806 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1807 PerlIO_printf(Perl_debug_log,
1808 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1809 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1810 RESTORE_NUMERIC_LOCAL();
1811 });
65202027 1812#else
572bbb43 1813 DEBUG_c({
f93f4e46 1814 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1815 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1816 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1817 RESTORE_NUMERIC_LOCAL();
1818 });
572bbb43 1819#endif
79072805
LW		 1820 }
1821 else if (SvTYPE(sv) < SVt_PVNV)
1822 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 1823 if (SvIOKp(sv) &&
1824 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 1825 {
65202027 1826 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
93a17b20 1827 }
748a9306 1828 else if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1829 dTHR;
599cee73 1830 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1831 not_a_number(sv);
097ee67d 1832 SvNVX(sv) = Atof(SvPVX(sv));
93a17b20 1833 }
79072805 1834 else {
11343788 1835 dTHR;
599cee73 1836 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1837 report_uninit();
25da4f38
IZ		 1838 if (SvTYPE(sv) < SVt_NV)
1839 /* Typically the caller expects that sv_any is not NULL now. */
1840 sv_upgrade(sv, SVt_NV);
a0d0e21e 1841 return 0.0;
79072805
LW		 1842 }
1843 SvNOK_on(sv);
572bbb43 1844#if defined(USE_LONG_DOUBLE)
097ee67d 1845 DEBUG_c({
f93f4e46 1846 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1847 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1848 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1849 RESTORE_NUMERIC_LOCAL();
1850 });
65202027 1851#else
572bbb43 1852 DEBUG_c({
f93f4e46 1853 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1854 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1855 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1856 RESTORE_NUMERIC_LOCAL();
1857 });
572bbb43 1858#endif
463ee0b2 1859 return SvNVX(sv);
79072805
LW		 1860}
1861
76e3520e 1862STATIC IV
cea2e8a9 1863S_asIV(pTHX_ SV *sv)
36477c24 1864{
1865 I32 numtype = looks_like_number(sv);
65202027 1866 NV d;
36477c24 1867
25da4f38 1868 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1869 return Atol(SvPVX(sv));
d008e5eb
GS		 1870 if (!numtype) {
1871 dTHR;
1872 if (ckWARN(WARN_NUMERIC))
1873 not_a_number(sv);
1874 }
097ee67d 1875 d = Atof(SvPVX(sv));
25da4f38 1876 return I_V(d);
36477c24 1877}
1878
76e3520e 1879STATIC UV
cea2e8a9 1880S_asUV(pTHX_ SV *sv)
36477c24 1881{
1882 I32 numtype = looks_like_number(sv);
1883
84902520 1884#ifdef HAS_STRTOUL
25da4f38 1885 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1886 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 1887#endif
d008e5eb
GS		 1888 if (!numtype) {
1889 dTHR;
1890 if (ckWARN(WARN_NUMERIC))
1891 not_a_number(sv);
1892 }
097ee67d 1893 return U_V(Atof(SvPVX(sv)));
36477c24 1894}
1895
25da4f38
IZ		 1896/*
1897 * Returns a combination of (advisory only - can get false negatives)
1898 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1899 * IS_NUMBER_NEG
1900 * 0 if does not look like number.
1901 *
1902 * In fact possible values are 0 and
1903 * IS_NUMBER_TO_INT_BY_ATOL 123
1904 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1905 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
300aed98 1906 * IS_NUMBER_INFINITY
25da4f38
IZ		 1907 * with a possible addition of IS_NUMBER_NEG.
1908 */
1909
954c1994
GS		 1910/*
1911=for apidoc looks_like_number
1912
1913Test if an the content of an SV looks like a number (or is a
1914number).
1915
1916=cut
1917*/
1918
36477c24 1919I32
864dbfa3 1920Perl_looks_like_number(pTHX_ SV *sv)
36477c24 1921{
1922 register char *s;
1923 register char *send;
1924 register char *sbegin;
25da4f38
IZ		 1925 register char *nbegin;
1926 I32 numtype = 0;
300aed98 1927 I32 sawinf = 0;
36477c24 1928 STRLEN len;
1929
1930 if (SvPOK(sv)) {
1931 sbegin = SvPVX(sv);
1932 len = SvCUR(sv);
1933 }
1934 else if (SvPOKp(sv))
1935 sbegin = SvPV(sv, len);
1936 else
1937 return 1;
1938 send = sbegin + len;
1939
1940 s = sbegin;
1941 while (isSPACE(*s))
1942 s++;
25da4f38
IZ		 1943 if (*s == '-') {
1944 s++;
1945 numtype = IS_NUMBER_NEG;
1946 }
1947 else if (*s == '+')
36477c24 1948 s++;
ff0cee69 1949
25da4f38
IZ		 1950 nbegin = s;
1951 /*
097ee67d
JH		 1952 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1953 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1954 * (int)atof().
25da4f38
IZ		 1955 */
1956
300aed98 1957 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 1958 if (isDIGIT(*s)) {
1959 do {
1960 s++;
1961 } while (isDIGIT(*s));
25da4f38
IZ		 1962
1963 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1964 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1965 else
1966 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1967
097ee67d
JH		 1968 if (*s == '.'
1969#ifdef USE_LOCALE_NUMERIC
1970 || IS_NUMERIC_RADIX(*s)
1971#endif
1972 ) {
ff0cee69 1973 s++;
25da4f38 1974 numtype |= IS_NUMBER_NOT_IV;
097ee67d 1975 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 1976 s++;
1977 }
36477c24 1978 }
097ee67d
JH		 1979 else if (*s == '.'
1980#ifdef USE_LOCALE_NUMERIC
1981 || IS_NUMERIC_RADIX(*s)
1982#endif
1983 ) {
ff0cee69 1984 s++;
25da4f38 1985 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
097ee67d 1986 /* no digits before the radix means we need digits after it */
ff0cee69 1987 if (isDIGIT(*s)) {
1988 do {
1989 s++;
1990 } while (isDIGIT(*s));
1991 }
1992 else
1993 return 0;
1994 }
300aed98
JH		 1995 else if (*s == 'I' || *s == 'i') {
1996 s++; if (*s != 'N' && *s != 'n') return 0;
1997 s++; if (*s != 'F' && *s != 'f') return 0;
1998 s++; if (*s == 'I' || *s == 'i') {
1999 s++; if (*s != 'N' && *s != 'n') return 0;
2000 s++; if (*s != 'I' && *s != 'i') return 0;
2001 s++; if (*s != 'T' && *s != 't') return 0;
2002 s++; if (*s != 'Y' && *s != 'y') return 0;
2003 }
2004 sawinf = 1;
2005 }
ff0cee69 2006 else
2007 return 0;
2008
300aed98
JH		 2009 if (sawinf)
2010 numtype = IS_NUMBER_INFINITY;
2011 else {
2012 /* we can have an optional exponent part */
2013 if (*s == 'e' || *s == 'E') {
2014 numtype &= ~IS_NUMBER_NEG;
2015 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2016 s++;
300aed98
JH		 2017 if (*s == '+' || *s == '-')
2018 s++;
2019 if (isDIGIT(*s)) {
2020 do {
2021 s++;
2022 } while (isDIGIT(*s));
2023 }
2024 else
2025 return 0;
2026 }
36477c24 2027 }
2028 while (isSPACE(*s))
2029 s++;
2030 if (s >= send)
2031 return numtype;
2032 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2033 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2034 return 0;
2035}
2036
79072805 2037char *
864dbfa3 2038Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2039{
2040 STRLEN n_a;
2041 return sv_2pv(sv, &n_a);
2042}
2043
25da4f38 2044/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2045static char *
25da4f38
IZ		 2046uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2047{
25da4f38
IZ		 2048 char *ptr = buf + TYPE_CHARS(UV);
2049 char *ebuf = ptr;
2050 int sign;
25da4f38
IZ		 2051
2052 if (is_uv)
2053 sign = 0;
2054 else if (iv >= 0) {
2055 uv = iv;
2056 sign = 0;
2057 } else {
2058 uv = -iv;
2059 sign = 1;
2060 }
2061 do {
2062 *--ptr = '0' + (uv % 10);
2063 } while (uv /= 10);
2064 if (sign)
2065 *--ptr = '-';
2066 *peob = ebuf;
2067 return ptr;
2068}
2069
1fa8b10d 2070char *
864dbfa3 2071Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2072{
2073 register char *s;
2074 int olderrno;
46fc3d4c 2075 SV *tsv;
25da4f38
IZ		 2076 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2077 char *tmpbuf = tbuf;
79072805 2078
463ee0b2
LW		 2079 if (!sv) {
2080 *lp = 0;
2081 return "";
2082 }
8990e307 2083 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2084 mg_get(sv);
2085 if (SvPOKp(sv)) {
2086 *lp = SvCUR(sv);
2087 return SvPVX(sv);
2088 }
cf2093f6 2089 if (SvIOKp(sv)) {
cf2093f6 2090 if (SvIsUV(sv))
57def98f 2091 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2092 else
57def98f 2093 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2094 tsv = Nullsv;
a0d0e21e 2095 goto tokensave;
463ee0b2
LW		 2096 }
2097 if (SvNOKp(sv)) {
2d4389e4 2098 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2099 tsv = Nullsv;
a0d0e21e 2100 goto tokensave;
463ee0b2 2101 }
16d20bd9 2102 if (!SvROK(sv)) {
d008e5eb 2103 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2104 dTHR;
d008e5eb 2105 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2106 report_uninit();
c6ee37c5 2107 }
16d20bd9
AD		 2108 *lp = 0;
2109 return "";
2110 }
463ee0b2 2111 }
ed6116ce
LW		 2112 if (SvTHINKFIRST(sv)) {
2113 if (SvROK(sv)) {
a0d0e21e
LW		 2114 SV* tmpstr;
2115 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
9e7bc3e8 2116 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2117 sv = (SV*)SvRV(sv);
2118 if (!sv)
2119 s = "NULLREF";
2120 else {
f9277f47
IZ		 2121 MAGIC *mg;
2122
ed6116ce 2123 switch (SvTYPE(sv)) {
f9277f47
IZ		 2124 case SVt_PVMG:
2125 if ( ((SvFLAGS(sv) &
2126 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2127 == (SVs_OBJECT|SVs_RMG))
57668c4d 2128 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2129 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2130 dTHR;
2cd61cdb 2131 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2132
2cd61cdb 2133 if (!mg->mg_ptr) {
8782bef2
GB		 2134 char *fptr = "msix";
2135 char reflags[6];
2136 char ch;
2137 int left = 0;
2138 int right = 4;
2139 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2140
155aba94 2141 while((ch = *fptr++)) {
8782bef2
GB		 2142 if(reganch & 1) {
2143 reflags[left++] = ch;
2144 }
2145 else {
2146 reflags[right--] = ch;
2147 }
2148 reganch >>= 1;
2149 }
2150 if(left != 4) {
2151 reflags[left] = '-';
2152 left = 5;
2153 }
2154
2155 mg->mg_len = re->prelen + 4 + left;
2156 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2157 Copy("(?", mg->mg_ptr, 2, char);
2158 Copy(reflags, mg->mg_ptr+2, left, char);
2159 Copy(":", mg->mg_ptr+left+2, 1, char);
2160 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2161 mg->mg_ptr[mg->mg_len - 1] = ')';
2162 mg->mg_ptr[mg->mg_len] = 0;
2163 }
3280af22 2164 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2165 *lp = mg->mg_len;
2166 return mg->mg_ptr;
f9277f47
IZ		 2167 }
2168 /* Fall through */
ed6116ce
LW		 2169 case SVt_NULL:
2170 case SVt_IV:
2171 case SVt_NV:
2172 case SVt_RV:
2173 case SVt_PV:
2174 case SVt_PVIV:
2175 case SVt_PVNV:
81689caa
HS		 2176 case SVt_PVBM: if (SvROK(sv))
2177 s = "REF";
2178 else
2179 s = "SCALAR"; break;
ed6116ce
LW		 2180 case SVt_PVLV: s = "LVALUE"; break;
2181 case SVt_PVAV: s = "ARRAY"; break;
2182 case SVt_PVHV: s = "HASH"; break;
2183 case SVt_PVCV: s = "CODE"; break;
2184 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2185 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2186 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2187 default: s = "UNKNOWN"; break;
2188 }
46fc3d4c 2189 tsv = NEWSV(0,0);
ed6116ce 2190 if (SvOBJECT(sv))
cea2e8a9 2191 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2192 else
46fc3d4c 2193 sv_setpv(tsv, s);
57def98f 2194 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2195 goto tokensaveref;
463ee0b2 2196 }
ed6116ce
LW		 2197 *lp = strlen(s);
2198 return s;
79072805 2199 }
0336b60e
IZ		 2200 if (SvREADONLY(sv) && !SvOK(sv)) {
2201 dTHR;
2202 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2203 report_uninit();
ed6116ce
LW		 2204 *lp = 0;
2205 return "";
79072805 2206 }
79072805 2207 }
25da4f38
IZ		 2208 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2209 /* XXXX 64-bit? IV may have better precision... */
34d861e4
JH		 2210 /* I tried changing this for to be 64-bit-aware and
2211 * the t/op/numconvert.t became very, very, angry.
2212 * --jhi Sep 1999 */
79072805
LW		 2213 if (SvTYPE(sv) < SVt_PVNV)
2214 sv_upgrade(sv, SVt_PVNV);
2215 SvGROW(sv, 28);
463ee0b2 2216 s = SvPVX(sv);
79072805 2217 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2218#ifdef apollo
463ee0b2 2219 if (SvNVX(sv) == 0.0)
79072805
LW		 2220 (void)strcpy(s,"0");
2221 else
2222#endif /*apollo*/
bbce6d69 2223 {
2d4389e4 2224 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2225 }
79072805 2226 errno = olderrno;
a0d0e21e
LW		 2227#ifdef FIXNEGATIVEZERO
2228 if (*s == '-' && s[1] == '0' && !s[2])
2229 strcpy(s,"0");
2230#endif
79072805
LW		 2231 while (*s) s++;
2232#ifdef hcx
2233 if (s[-1] == '.')
46fc3d4c 2234 *--s = '\0';
79072805
LW		 2235#endif
2236 }
748a9306 2237 else if (SvIOKp(sv)) {
25da4f38 2238 U32 isIOK = SvIOK(sv);
0336b60e 2239 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2240 char buf[TYPE_CHARS(UV)];
2241 char *ebuf, *ptr;
2242
79072805
LW		 2243 if (SvTYPE(sv) < SVt_PVIV)
2244 sv_upgrade(sv, SVt_PVIV);
0336b60e 2245 if (isUIOK)
25da4f38 2246 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2247 else
25da4f38 2248 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2249 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2250 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2251 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2252 s = SvEND(sv);
0336b60e 2253 *s = '\0';
25da4f38 2254 if (isIOK)
64f14228
GA		 2255 SvIOK_on(sv);
2256 else
2257 SvIOKp_on(sv);
0336b60e
IZ		 2258 if (isUIOK)
2259 SvIsUV_on(sv);
2260 SvPOK_on(sv);
79072805
LW		 2261 }
2262 else {
11343788 2263 dTHR;
0336b60e
IZ		 2264 if (ckWARN(WARN_UNINITIALIZED)
2265 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2266 {
1d7c1841 2267 report_uninit();
0336b60e 2268 }
a0d0e21e 2269 *lp = 0;
25da4f38
IZ		 2270 if (SvTYPE(sv) < SVt_PV)
2271 /* Typically the caller expects that sv_any is not NULL now. */
2272 sv_upgrade(sv, SVt_PV);
a0d0e21e 2273 return "";
79072805 2274 }
463ee0b2
LW		 2275 *lp = s - SvPVX(sv);
2276 SvCUR_set(sv, *lp);
79072805 2277 SvPOK_on(sv);
1d7c1841
GS		 2278 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2279 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2280 return SvPVX(sv);
a0d0e21e
LW		 2281
2282 tokensave:
2283 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2284 /* Sneaky stuff here */
2285
2286 tokensaveref:
46fc3d4c 2287 if (!tsv)
96827780 2288 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2289 sv_2mortal(tsv);
2290 *lp = SvCUR(tsv);
2291 return SvPVX(tsv);
a0d0e21e
LW		 2292 }
2293 else {
2294 STRLEN len;
46fc3d4c 2295 char *t;
2296
2297 if (tsv) {
2298 sv_2mortal(tsv);
2299 t = SvPVX(tsv);
2300 len = SvCUR(tsv);
2301 }
2302 else {
96827780
MB		 2303 t = tmpbuf;
2304 len = strlen(tmpbuf);
46fc3d4c 2305 }
a0d0e21e 2306#ifdef FIXNEGATIVEZERO
46fc3d4c 2307 if (len == 2 && t[0] == '-' && t[1] == '0') {
2308 t = "0";
2309 len = 1;
2310 }
a0d0e21e
LW		 2311#endif
2312 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2313 *lp = len;
a0d0e21e
LW		 2314 s = SvGROW(sv, len + 1);
2315 SvCUR_set(sv, len);
46fc3d4c 2316 (void)strcpy(s, t);
6bf554b4 2317 SvPOKp_on(sv);
a0d0e21e
LW		 2318 return s;
2319 }
463ee0b2
LW		 2320}
2321
7340a771
GS		 2322char *
2323Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2324{
560a288e
GS		 2325 STRLEN n_a;
2326 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2327}
2328
2329char *
2330Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2331{
2332 return sv_2pv(sv,lp);
2333}
2334
2335char *
2336Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2337{
560a288e
GS		 2338 STRLEN n_a;
2339 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2340}
2341
2342char *
2343Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2344{
560a288e 2345 sv_utf8_upgrade(sv);
7340a771
GS		 2346 return sv_2pv(sv,lp);
2347}
2348
463ee0b2
LW		 2349/* This function is only called on magical items */
2350bool
864dbfa3 2351Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2352{
8990e307 2353 if (SvGMAGICAL(sv))
463ee0b2
LW		 2354 mg_get(sv);
2355
a0d0e21e
LW		 2356 if (!SvOK(sv))
2357 return 0;
2358 if (SvROK(sv)) {
11343788 2359 dTHR;
a0d0e21e
LW		 2360 SV* tmpsv;
2361 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
9e7bc3e8 2362 return SvTRUE(tmpsv);
a0d0e21e
LW		 2363 return SvRV(sv) != 0;
2364 }
463ee0b2 2365 if (SvPOKp(sv)) {
11343788
MB		 2366 register XPV* Xpvtmp;
2367 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2368 (*Xpvtmp->xpv_pv > '0' ||
2369 Xpvtmp->xpv_cur > 1 ||
2370 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2371 return 1;
2372 else
2373 return 0;
2374 }
2375 else {
2376 if (SvIOKp(sv))
2377 return SvIVX(sv) != 0;
2378 else {
2379 if (SvNOKp(sv))
2380 return SvNVX(sv) != 0.0;
2381 else
2382 return FALSE;
2383 }
2384 }
79072805
LW		 2385}
2386
c461cf8f
JH		 2387/*
2388=for apidoc sv_utf8_upgrade
2389
2390Convert the PV of an SV to its UTF8-encoded form.
2391
2392=cut
2393*/
2394
560a288e
GS		 2395void
2396Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2397{
2398 int hicount;
2399 char *c;
2400
2401 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2402 return;
2403
2404 /* This function could be much more efficient if we had a FLAG
2405 * to signal if there are any hibit chars in the string
2406 */
2407 hicount = 0;
2408 for (c = SvPVX(sv); c < SvEND(sv); c++) {
2409 if (*c & 0x80)
2410 hicount++;
2411 }
2412
2413 if (hicount) {
2414 char *src, *dst;
2415 SvGROW(sv, SvCUR(sv) + hicount + 1);
2416
2417 src = SvEND(sv) - 1;
2418 SvCUR_set(sv, SvCUR(sv) + hicount);
2419 dst = SvEND(sv) - 1;
2420
2421 while (src < dst) {
2422 if (*src & 0x80) {
2423 dst--;
2424 uv_to_utf8((U8*)dst, (U8)*src--);
2425 dst--;
2426 }
2427 else {
2428 *dst-- = *src--;
2429 }
2430 }
2431
2432 SvUTF8_on(sv);
2433 }
2434}
2435
c461cf8f
JH		 2436/*
2437=for apidoc sv_utf8_downgrade
2438
2439Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2440This may not be possible if the PV contains non-byte encoding characters;
2441if this is the case, either returns false or, if C<fail_ok> is not
2442true, croaks.
2443
2444=cut
2445*/
2446
560a288e
GS		 2447bool
2448Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2449{
2450 if (SvPOK(sv) && SvUTF8(sv)) {
2451 char *c = SvPVX(sv);
2452 char *first_hi = 0;
2453 /* need to figure out if this is possible at all first */
2454 while (c < SvEND(sv)) {
2455 if (*c & 0x80) {
2456 I32 len;
ce32ed4b 2457 UV uv = utf8_to_uv((U8*)c, &len);
560a288e
GS		 2458 if (uv >= 256) {
2459 if (fail_ok)
2460 return FALSE;
2461 else {
2462 /* XXX might want to make a callback here instead */
9a54186f 2463 Perl_croak(aTHX_ "Big byte");
560a288e
GS		 2464 }
2465 }
2466 if (!first_hi)
2467 first_hi = c;
2468 c += len;
2469 }
2470 else {
2471 c++;
2472 }
2473 }
2474
2475 if (first_hi) {
2476 char *src = first_hi;
2477 char *dst = first_hi;
2478 while (src < SvEND(sv)) {
2479 if (*src & 0x80) {
2480 I32 len;
ce32ed4b 2481 U8 u = (U8)utf8_to_uv((U8*)src, &len);
560a288e
GS		 2482 *dst++ = u;
2483 src += len;
2484 }
2485 else {
2486 *dst++ = *src++;
2487 }
2488 }
2489 SvCUR_set(sv, dst - SvPVX(sv));
2490 }
2491 SvUTF8_off(sv);
2492 }
2493 return TRUE;
2494}
2495
c461cf8f
JH		 2496/*
2497=for apidoc sv_utf8_encode
2498
2499Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2500flag so that it looks like bytes again. Nothing calls this.
2501
2502=cut
2503*/
2504
560a288e
GS		 2505void
2506Perl_sv_utf8_encode(pTHX_ register SV *sv)
2507{
2508 sv_utf8_upgrade(sv);
2509 SvUTF8_off(sv);
2510}
2511
2512bool
2513Perl_sv_utf8_decode(pTHX_ register SV *sv)
2514{
2515 if (SvPOK(sv)) {
2516 char *c;
2517 bool has_utf = FALSE;
2518 if (!sv_utf8_downgrade(sv, TRUE))
2519 return FALSE;
2520
2521 /* it is actually just a matter of turning the utf8 flag on, but
2522 * we want to make sure everything inside is valid utf8 first.
2523 */
2524 c = SvPVX(sv);
2525 while (c < SvEND(sv)) {
2526 if (*c & 0x80) {
2527 I32 len;
2528 (void)utf8_to_uv((U8*)c, &len);
2529 if (len == 1) {
2530 /* bad utf8 */
2531 return FALSE;
2532 }
2533 c += len;
2534 has_utf = TRUE;
2535 }
2536 else {
2537 c++;
2538 }
2539 }
2540
2541 if (has_utf)
2542 SvUTF8_on(sv);
2543 }
2544 return TRUE;
2545}
2546
2547
79072805 2548/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2549 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2550 * as temporary.
2551 */
2552
954c1994
GS		 2553/*
2554=for apidoc sv_setsv
2555
2556Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2557The source SV may be destroyed if it is mortal. Does not handle 'set'
2558magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2559C<sv_setsv_mg>.
2560
2561=cut
2562*/
2563
79072805 2564void
864dbfa3 2565Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2566{
11343788 2567 dTHR;
8990e307
LW		 2568 register U32 sflags;
2569 register int dtype;
2570 register int stype;
463ee0b2 2571
79072805
LW		 2572 if (sstr == dstr)
2573 return;
2213622d 2574 SV_CHECK_THINKFIRST(dstr);
79072805 2575 if (!sstr)
3280af22 2576 sstr = &PL_sv_undef;
8990e307
LW		 2577 stype = SvTYPE(sstr);
2578 dtype = SvTYPE(dstr);
79072805 2579
a0d0e21e 2580 SvAMAGIC_off(dstr);
9e7bc3e8 2581
463ee0b2 2582 /* There's a lot of redundancy below but we're going for speed here */
79072805 2583
8990e307 2584 switch (stype) {
79072805 2585 case SVt_NULL:
aece5585 2586 undef_sstr:
20408e3c
GS		 2587 if (dtype != SVt_PVGV) {
2588 (void)SvOK_off(dstr);
2589 return;
2590 }
2591 break;
463ee0b2 2592 case SVt_IV:
aece5585
GA		 2593 if (SvIOK(sstr)) {
2594 switch (dtype) {
2595 case SVt_NULL:
8990e307 2596 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2597 break;
2598 case SVt_NV:
8990e307 2599 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2600 break;
2601 case SVt_RV:
2602 case SVt_PV:
a0d0e21e 2603 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2604 break;
2605 }
2606 (void)SvIOK_only(dstr);
2607 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2608 if (SvIsUV(sstr))
2609 SvIsUV_on(dstr);
aece5585
GA		 2610 SvTAINT(dstr);
2611 return;
8990e307 2612 }
aece5585
GA		 2613 goto undef_sstr;
2614
463ee0b2 2615 case SVt_NV:
aece5585
GA		 2616 if (SvNOK(sstr)) {
2617 switch (dtype) {
2618 case SVt_NULL:
2619 case SVt_IV:
8990e307 2620 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2621 break;
2622 case SVt_RV:
2623 case SVt_PV:
2624 case SVt_PVIV:
a0d0e21e 2625 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2626 break;
2627 }
2628 SvNVX(dstr) = SvNVX(sstr);
2629 (void)SvNOK_only(dstr);
2630 SvTAINT(dstr);
2631 return;
8990e307 2632 }
aece5585
GA		 2633 goto undef_sstr;
2634
ed6116ce 2635 case SVt_RV:
8990e307 2636 if (dtype < SVt_RV)
ed6116ce 2637 sv_upgrade(dstr, SVt_RV);
c07a80fd 2638 else if (dtype == SVt_PVGV &&
2639 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2640 sstr = SvRV(sstr);
a5f75d66 2641 if (sstr == dstr) {
1d7c1841
GS		 2642 if (GvIMPORTED(dstr) != GVf_IMPORTED
2643 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2644 {
a5f75d66 2645 GvIMPORTED_on(dstr);
1d7c1841 2646 }
a5f75d66
AD		 2647 GvMULTI_on(dstr);
2648 return;
2649 }
c07a80fd 2650 goto glob_assign;
2651 }
ed6116ce 2652 break;
463ee0b2 2653 case SVt_PV:
fc36a67e 2654 case SVt_PVFM:
8990e307 2655 if (dtype < SVt_PV)
463ee0b2 2656 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2657 break;
2658 case SVt_PVIV:
8990e307 2659 if (dtype < SVt_PVIV)
463ee0b2 2660 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2661 break;
2662 case SVt_PVNV:
8990e307 2663 if (dtype < SVt_PVNV)
463ee0b2 2664 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2665 break;
4633a7c4
LW		 2666 case SVt_PVAV:
2667 case SVt_PVHV:
2668 case SVt_PVCV:
4633a7c4 2669 case SVt_PVIO:
533c011a 2670 if (PL_op)
cea2e8a9 2671 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2672 PL_op_name[PL_op->op_type]);
4633a7c4 2673 else
cea2e8a9 2674 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2675 break;
2676
79072805 2677 case SVt_PVGV:
8990e307 2678 if (dtype <= SVt_PVGV) {
c07a80fd 2679 glob_assign:
a5f75d66 2680 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2681 char *name = GvNAME(sstr);
2682 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2683 sv_upgrade(dstr, SVt_PVGV);
6662521e 2684 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2685 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2686 GvNAME(dstr) = savepvn(name, len);
2687 GvNAMELEN(dstr) = len;
2688 SvFAKE_on(dstr); /* can coerce to non-glob */
2689 }
7bac28a0 2690 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2691 else if (PL_curstackinfo->si_type == PERLSI_SORT
2692 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2693 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2694 GvNAME(dstr));
a0d0e21e 2695 (void)SvOK_off(dstr);
a5f75d66 2696 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2697 gp_free((GV*)dstr);
79072805 2698 GvGP(dstr) = gp_ref(GvGP(sstr));
8990e307 2699 SvTAINT(dstr);
1d7c1841
GS		 2700 if (GvIMPORTED(dstr) != GVf_IMPORTED
2701 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2702 {
a5f75d66 2703 GvIMPORTED_on(dstr);
1d7c1841 2704 }
a5f75d66 2705 GvMULTI_on(dstr);
79072805
LW		 2706 return;
2707 }
2708 /* FALL THROUGH */
2709
2710 default:
973f89ab
CS		 2711 if (SvGMAGICAL(sstr)) {
2712 mg_get(sstr);
2713 if (SvTYPE(sstr) != stype) {
2714 stype = SvTYPE(sstr);
2715 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2716 goto glob_assign;
2717 }
2718 }
ded42b9f 2719 if (stype == SVt_PVLV)
6fc92669 2720 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2721 else
6fc92669 2722 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2723 }
2724
8990e307
LW		 2725 sflags = SvFLAGS(sstr);
2726
2727 if (sflags & SVf_ROK) {
2728 if (dtype >= SVt_PV) {
2729 if (dtype == SVt_PVGV) {
2730 SV *sref = SvREFCNT_inc(SvRV(sstr));
2731 SV *dref = 0;
a5f75d66 2732 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2733
2734 if (intro) {
2735 GP *gp;
1d7c1841 2736 gp_free((GV*)dstr);
a5f75d66 2737 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2738 Newz(602,gp, 1, GP);
44a8e56a 2739 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2740 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2741 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2742 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2743 }
a5f75d66 2744 GvMULTI_on(dstr);
8990e307
LW		 2745 switch (SvTYPE(sref)) {
2746 case SVt_PVAV:
a0d0e21e
LW		 2747 if (intro)
2748 SAVESPTR(GvAV(dstr));
2749 else
2750 dref = (SV*)GvAV(dstr);
8990e307 2751 GvAV(dstr) = (AV*)sref;
39bac7f7 2752 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2753 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2754 {
a5f75d66 2755 GvIMPORTED_AV_on(dstr);
1d7c1841 2756 }
8990e307
LW		 2757 break;
2758 case SVt_PVHV:
a0d0e21e
LW		 2759 if (intro)
2760 SAVESPTR(GvHV(dstr));
2761 else
2762 dref = (SV*)GvHV(dstr);
8990e307 2763 GvHV(dstr) = (HV*)sref;
39bac7f7 2764 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2765 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2766 {
a5f75d66 2767 GvIMPORTED_HV_on(dstr);
1d7c1841 2768 }
8990e307
LW		 2769 break;
2770 case SVt_PVCV:
8ebc5c01 2771 if (intro) {
2772 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2773 SvREFCNT_dec(GvCV(dstr));
2774 GvCV(dstr) = Nullcv;
68dc0745 2775 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2776 PL_sub_generation++;
8ebc5c01 2777 }
a0d0e21e 2778 SAVESPTR(GvCV(dstr));
8ebc5c01 2779 }
68dc0745 2780 else
2781 dref = (SV*)GvCV(dstr);
2782 if (GvCV(dstr) != (CV*)sref) {
748a9306 2783 CV* cv = GvCV(dstr);
4633a7c4 2784 if (cv) {
68dc0745 2785 if (!GvCVGEN((GV*)dstr) &&
2786 (CvROOT(cv) || CvXSUB(cv)))
2787 {
fe5e78ed
GS		 2788 SV *const_sv = cv_const_sv(cv);
2789 bool const_changed = TRUE;
2790 if(const_sv)
2791 const_changed = sv_cmp(const_sv,
2792 op_const_sv(CvSTART((CV*)sref),
036b4402 2793 (CV*)sref));
7bac28a0 2794 /* ahem, death to those who redefine
2795 * active sort subs */
3280af22
NIS		 2796 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2797 PL_sortcop == CvSTART(cv))
cea2e8a9 2798 Perl_croak(aTHX_
7bac28a0 2799 "Can't redefine active sort subroutine %s",
2800 GvENAME((GV*)dstr));
036b4402 2801 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
e476b1b5 2802 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
fe5e78ed
GS		 2803 "Constant subroutine %s redefined"
2804 : "Subroutine %s redefined",
2f34f9d4 2805 GvENAME((GV*)dstr));
9607fc9c 2806 }
3fe9a6f1 2807 cv_ckproto(cv, (GV*)dstr,
2808 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2809 }
a5f75d66 2810 GvCV(dstr) = (CV*)sref;
7a4c00b4 2811 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2812 GvASSUMECV_on(dstr);
3280af22 2813 PL_sub_generation++;
a5f75d66 2814 }
39bac7f7 2815 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2816 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2817 {
a5f75d66 2818 GvIMPORTED_CV_on(dstr);
1d7c1841 2819 }
8990e307 2820 break;
91bba347
LW		 2821 case SVt_PVIO:
2822 if (intro)
2823 SAVESPTR(GvIOp(dstr));
2824 else
2825 dref = (SV*)GvIOp(dstr);
2826 GvIOp(dstr) = (IO*)sref;
2827 break;
f4d13ee9
JH		 2828 case SVt_PVFM:
2829 if (intro)
2830 SAVESPTR(GvFORM(dstr));
2831 else
2832 dref = (SV*)GvFORM(dstr);
2833 GvFORM(dstr) = (CV*)sref;
2834 break;
8990e307 2835 default:
a0d0e21e
LW		 2836 if (intro)
2837 SAVESPTR(GvSV(dstr));
2838 else
2839 dref = (SV*)GvSV(dstr);
8990e307 2840 GvSV(dstr) = sref;
39bac7f7 2841 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2842 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2843 {
a5f75d66 2844 GvIMPORTED_SV_on(dstr);
1d7c1841 2845 }
8990e307
LW		 2846 break;
2847 }
2848 if (dref)
2849 SvREFCNT_dec(dref);
a0d0e21e
LW		 2850 if (intro)
2851 SAVEFREESV(sref);
8990e307
LW		 2852 SvTAINT(dstr);
2853 return;
2854 }
a0d0e21e 2855 if (SvPVX(dstr)) {
760ac839 2856 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2857 if (SvLEN(dstr))
2858 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2859 SvLEN(dstr)=SvCUR(dstr)=0;
2860 }
8990e307 2861 }
a0d0e21e 2862 (void)SvOK_off(dstr);
8990e307 2863 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2864 SvROK_on(dstr);
8990e307 2865 if (sflags & SVp_NOK) {
ed6116ce
LW		 2866 SvNOK_on(dstr);
2867 SvNVX(dstr) = SvNVX(sstr);
2868 }
8990e307 2869 if (sflags & SVp_IOK) {
a0d0e21e 2870 (void)SvIOK_on(dstr);
ed6116ce 2871 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2872 if (sflags & SVf_IVisUV)
25da4f38 2873 SvIsUV_on(dstr);
ed6116ce 2874 }
a0d0e21e
LW		 2875 if (SvAMAGIC(sstr)) {
2876 SvAMAGIC_on(dstr);
2877 }
ed6116ce 2878 }
8990e307 2879 else if (sflags & SVp_POK) {
79072805
LW		 2880
2881 /*
2882 * Check to see if we can just swipe the string. If so, it's a
2883 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2884 * It might even be a win on short strings if SvPVX(dstr)
2885 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2886 */
2887
ff68c719 2888 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2889 SvREFCNT(sstr) == 1 && /* and no other references to it? */
a5f75d66
AD		 2890 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2891 {
adbc6bb1 2892 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2893 if (SvOOK(dstr)) {
2894 SvFLAGS(dstr) &= ~SVf_OOK;
2895 Safefree(SvPVX(dstr) - SvIVX(dstr));
2896 }
50483b2c 2897 else if (SvLEN(dstr))
a5f75d66 2898 Safefree(SvPVX(dstr));
79072805 2899 }
a5f75d66 2900 (void)SvPOK_only(dstr);
463ee0b2 2901 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2902 SvLEN_set(dstr, SvLEN(sstr));
2903 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2904
79072805 2905 SvTEMP_off(dstr);
2b1c7e3e 2906 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2907 SvPV_set(sstr, Nullch);
2908 SvLEN_set(sstr, 0);
a5f75d66
AD		 2909 SvCUR_set(sstr, 0);
2910 SvTEMP_off(sstr);
79072805
LW		 2911 }
2912 else { /* have to copy actual string */
8990e307
LW		 2913 STRLEN len = SvCUR(sstr);
2914
2915 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2916 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2917 SvCUR_set(dstr, len);
2918 *SvEND(dstr) = '\0';
a0d0e21e 2919 (void)SvPOK_only(dstr);
79072805 2920 }
3aa33fe5 2921 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2922 SvUTF8_on(dstr);
79072805 2923 /*SUPPRESS 560*/
8990e307 2924 if (sflags & SVp_NOK) {
79072805 2925 SvNOK_on(dstr);
463ee0b2 2926 SvNVX(dstr) = SvNVX(sstr);
79072805 2927 }
8990e307 2928 if (sflags & SVp_IOK) {
a0d0e21e 2929 (void)SvIOK_on(dstr);
463ee0b2 2930 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2931 if (sflags & SVf_IVisUV)
25da4f38 2932 SvIsUV_on(dstr);
79072805
LW		 2933 }
2934 }
8990e307 2935 else if (sflags & SVp_NOK) {
463ee0b2 2936 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2937 (void)SvNOK_only(dstr);
2b1c7e3e 2938 if (sflags & SVf_IOK) {
a0d0e21e 2939 (void)SvIOK_on(dstr);
463ee0b2 2940 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2941 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2942 if (sflags & SVf_IVisUV)
25da4f38 2943 SvIsUV_on(dstr);
79072805
LW		 2944 }
2945 }
8990e307 2946 else if (sflags & SVp_IOK) {
a0d0e21e 2947 (void)SvIOK_only(dstr);
463ee0b2 2948 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2949 if (sflags & SVf_IVisUV)
25da4f38 2950 SvIsUV_on(dstr);
79072805
LW		 2951 }
2952 else {
20408e3c 2953 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2954 if (ckWARN(WARN_MISC))
2955 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2956 }
2957 else
2958 (void)SvOK_off(dstr);
a0d0e21e 2959 }
463ee0b2 2960 SvTAINT(dstr);
79072805
LW		 2961}
2962
954c1994
GS		 2963/*
2964=for apidoc sv_setsv_mg
2965
2966Like C<sv_setsv>, but also handles 'set' magic.
2967
2968=cut
2969*/
2970
79072805 2971void
864dbfa3 2972Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2973{
2974 sv_setsv(dstr,sstr);
2975 SvSETMAGIC(dstr);
2976}
2977
954c1994
GS		 2978/*
2979=for apidoc sv_setpvn
2980
2981Copies a string into an SV. The C<len> parameter indicates the number of
2982bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2983
2984=cut
2985*/
2986
ef50df4b 2987void
864dbfa3 2988Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2989{
c6f8c383 2990 register char *dptr;
4561caa4
CS		 2991 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2992 elicit a warning, but it won't hurt. */
2213622d 2993 SV_CHECK_THINKFIRST(sv);
463ee0b2 2994 if (!ptr) {
a0d0e21e 2995 (void)SvOK_off(sv);
463ee0b2
LW		 2996 return;
2997 }
6fc92669 2998 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 2999
79072805 3000 SvGROW(sv, len + 1);
c6f8c383
GA		 3001 dptr = SvPVX(sv);
3002 Move(ptr,dptr,len,char);
3003 dptr[len] = '\0';
79072805 3004 SvCUR_set(sv, len);
a0d0e21e 3005 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3006 SvTAINT(sv);
79072805
LW		 3007}
3008
954c1994
GS		 3009/*
3010=for apidoc sv_setpvn_mg
3011
3012Like C<sv_setpvn>, but also handles 'set' magic.
3013
3014=cut
3015*/
3016
79072805 3017void
864dbfa3 3018Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3019{
3020 sv_setpvn(sv,ptr,len);
3021 SvSETMAGIC(sv);
3022}
3023
954c1994
GS		 3024/*
3025=for apidoc sv_setpv
3026
3027Copies a string into an SV. The string must be null-terminated. Does not
3028handle 'set' magic. See C<sv_setpv_mg>.
3029
3030=cut
3031*/
3032
ef50df4b 3033void
864dbfa3 3034Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3035{
3036 register STRLEN len;
3037
2213622d 3038 SV_CHECK_THINKFIRST(sv);
463ee0b2 3039 if (!ptr) {
a0d0e21e 3040 (void)SvOK_off(sv);
463ee0b2
LW		 3041 return;
3042 }
79072805 3043 len = strlen(ptr);
6fc92669 3044 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3045
79072805 3046 SvGROW(sv, len + 1);
463ee0b2 3047 Move(ptr,SvPVX(sv),len+1,char);
79072805 3048 SvCUR_set(sv, len);
a0d0e21e 3049 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3050 SvTAINT(sv);
3051}
3052
954c1994
GS		 3053/*
3054=for apidoc sv_setpv_mg
3055
3056Like C<sv_setpv>, but also handles 'set' magic.
3057
3058=cut
3059*/
3060
463ee0b2 3061void
864dbfa3 3062Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3063{
3064 sv_setpv(sv,ptr);
3065 SvSETMAGIC(sv);
3066}
3067
954c1994
GS		 3068/*
3069=for apidoc sv_usepvn
3070
3071Tells an SV to use C<ptr> to find its string value. Normally the string is
3072stored inside the SV but sv_usepvn allows the SV to use an outside string.
3073The C<ptr> should point to memory that was allocated by C<malloc>. The
3074string length, C<len>, must be supplied. This function will realloc the
3075memory pointed to by C<ptr>, so that pointer should not be freed or used by
3076the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3077See C<sv_usepvn_mg>.
3078
3079=cut
3080*/
3081
ef50df4b 3082void
864dbfa3 3083Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3084{
2213622d 3085 SV_CHECK_THINKFIRST(sv);
c6f8c383 3086 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3087 if (!ptr) {
a0d0e21e 3088 (void)SvOK_off(sv);
463ee0b2
LW		 3089 return;
3090 }
a0ed51b3 3091 (void)SvOOK_off(sv);
50483b2c 3092 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3093 Safefree(SvPVX(sv));
3094 Renew(ptr, len+1, char);
3095 SvPVX(sv) = ptr;
3096 SvCUR_set(sv, len);
3097 SvLEN_set(sv, len+1);
3098 *SvEND(sv) = '\0';
a0d0e21e 3099 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3100 SvTAINT(sv);
79072805
LW		 3101}
3102
954c1994
GS		 3103/*
3104=for apidoc sv_usepvn_mg
3105
3106Like C<sv_usepvn>, but also handles 'set' magic.
3107
3108=cut
3109*/
3110
ef50df4b 3111void
864dbfa3 3112Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3113{
51c1089b 3114 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3115 SvSETMAGIC(sv);
3116}
3117
6fc92669 3118void
864dbfa3 3119Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3120{
2213622d
GA		 3121 if (SvREADONLY(sv)) {
3122 dTHR;
3280af22 3123 if (PL_curcop != &PL_compiling)
cea2e8a9 3124 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3125 }
2213622d
GA		 3126 if (SvROK(sv))
3127 sv_unref(sv);
6fc92669
GS		 3128 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3129 sv_unglob(sv);
0f15f207
MB		 3130}
3131
954c1994
GS		 3132/*
3133=for apidoc sv_chop
3134
3135Efficient removal of characters from the beginning of the string buffer.
3136SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3137the string buffer. The C<ptr> becomes the first character of the adjusted
3138string.
3139
3140=cut
3141*/
3142
79072805 3143void
864dbfa3 3144Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
8ac85365
NIS		 3145
3146
79072805
LW		 3147{
3148 register STRLEN delta;
3149
a0d0e21e 3150 if (!ptr || !SvPOKp(sv))
79072805 3151 return;
2213622d 3152 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3153 if (SvTYPE(sv) < SVt_PVIV)
3154 sv_upgrade(sv,SVt_PVIV);
3155
3156 if (!SvOOK(sv)) {
50483b2c
JD		 3157 if (!SvLEN(sv)) { /* make copy of shared string */
3158 char *pvx = SvPVX(sv);
3159 STRLEN len = SvCUR(sv);
3160 SvGROW(sv, len + 1);
3161 Move(pvx,SvPVX(sv),len,char);
3162 *SvEND(sv) = '\0';
3163 }
463ee0b2 3164 SvIVX(sv) = 0;
79072805
LW		 3165 SvFLAGS(sv) |= SVf_OOK;
3166 }
25da4f38 3167 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3168 delta = ptr - SvPVX(sv);
79072805
LW		 3169 SvLEN(sv) -= delta;
3170 SvCUR(sv) -= delta;
463ee0b2
LW		 3171 SvPVX(sv) += delta;
3172 SvIVX(sv) += delta;
79072805
LW		 3173}
3174
954c1994
GS		 3175/*
3176=for apidoc sv_catpvn
3177
3178Concatenates the string onto the end of the string which is in the SV. The
3179C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3180'set' magic. See C<sv_catpvn_mg>.
3181
3182=cut
3183*/
3184
79072805 3185void
864dbfa3 3186Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3187{
463ee0b2 3188 STRLEN tlen;
748a9306 3189 char *junk;
a0d0e21e 3190
748a9306 3191 junk = SvPV_force(sv, tlen);
463ee0b2 3192 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3193 if (ptr == junk)
3194 ptr = SvPVX(sv);
463ee0b2 3195 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3196 SvCUR(sv) += len;
3197 *SvEND(sv) = '\0';
d41ff1b8 3198 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3199 SvTAINT(sv);
79072805
LW		 3200}
3201
954c1994
GS		 3202/*
3203=for apidoc sv_catpvn_mg
3204
3205Like C<sv_catpvn>, but also handles 'set' magic.
3206
3207=cut
3208*/
3209
79072805 3210void
864dbfa3 3211Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3212{
3213 sv_catpvn(sv,ptr,len);
3214 SvSETMAGIC(sv);
3215}
3216
954c1994
GS		 3217/*
3218=for apidoc sv_catsv
3219
3220Concatenates the string from SV C<ssv> onto the end of the string in SV
3221C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3222
3223=cut
3224*/
3225
ef50df4b 3226void
864dbfa3 3227Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3228{
3229 char *s;
463ee0b2 3230 STRLEN len;
79072805
LW		 3231 if (!sstr)
3232 return;
155aba94 3233 if ((s = SvPV(sstr, len))) {
e84ff256 3234 if (DO_UTF8(sstr)) {
560a288e 3235 sv_utf8_upgrade(dstr);
e84ff256 3236 sv_catpvn(dstr,s,len);
560a288e 3237 SvUTF8_on(dstr);
e84ff256
GS		 3238 }
3239 else
3240 sv_catpvn(dstr,s,len);
560a288e 3241 }
79072805
LW		 3242}
3243
954c1994
GS		 3244/*
3245=for apidoc sv_catsv_mg
3246
3247Like C<sv_catsv>, but also handles 'set' magic.
3248
3249=cut
3250*/
3251
79072805 3252void
864dbfa3 3253Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3254{
3255 sv_catsv(dstr,sstr);
3256 SvSETMAGIC(dstr);
3257}
3258
954c1994
GS		 3259/*
3260=for apidoc sv_catpv
3261
3262Concatenates the string onto the end of the string which is in the SV.
3263Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3264
3265=cut
3266*/
3267
ef50df4b 3268void
864dbfa3 3269Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3270{
3271 register STRLEN len;
463ee0b2 3272 STRLEN tlen;
748a9306 3273 char *junk;
79072805 3274
79072805
LW		 3275 if (!ptr)
3276 return;
748a9306 3277 junk = SvPV_force(sv, tlen);
79072805 3278 len = strlen(ptr);
463ee0b2 3279 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3280 if (ptr == junk)
3281 ptr = SvPVX(sv);
463ee0b2 3282 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3283 SvCUR(sv) += len;
d41ff1b8 3284 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3285 SvTAINT(sv);
79072805
LW		 3286}
3287
954c1994
GS		 3288/*
3289=for apidoc sv_catpv_mg
3290
3291Like C<sv_catpv>, but also handles 'set' magic.
3292
3293=cut
3294*/
3295
ef50df4b 3296void
864dbfa3 3297Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3298{
51c1089b 3299 sv_catpv(sv,ptr);
ef50df4b
GS		 3300 SvSETMAGIC(sv);
3301}
3302
79072805 3303SV *
864dbfa3 3304Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3305{
3306 register SV *sv;
3307
4561caa4 3308 new_SV(sv);
79072805
LW		 3309 if (len) {
3310 sv_upgrade(sv, SVt_PV);
3311 SvGROW(sv, len + 1);
3312 }
3313 return sv;
3314}
3315
1edc1566 3316/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3317
954c1994
GS		 3318/*
3319=for apidoc sv_magic
3320
3321Adds magic to an SV.
3322
3323=cut
3324*/
3325
79072805 3326void
864dbfa3 3327Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3328{
3329 MAGIC* mg;
3330
0f15f207
MB		 3331 if (SvREADONLY(sv)) {
3332 dTHR;
3280af22 3333 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3334 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3335 }
4633a7c4 3336 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3337 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3338 if (how == 't')
565764a8 3339 mg->mg_len |= 1;
463ee0b2 3340 return;
748a9306 3341 }
463ee0b2
LW		 3342 }
3343 else {
c6f8c383 3344 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3345 }
79072805
LW		 3346 Newz(702,mg, 1, MAGIC);
3347 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3348
79072805 3349 SvMAGIC(sv) = mg;
c277df42 3350 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3351 mg->mg_obj = obj;
85e6fe83 3352 else {
11343788 3353 dTHR;
8990e307 3354 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3355 mg->mg_flags |= MGf_REFCOUNTED;
3356 }
79072805 3357 mg->mg_type = how;
565764a8 3358 mg->mg_len = namlen;
1edc1566 3359 if (name)
3360 if (namlen >= 0)
3361 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3362 else if (namlen == HEf_SVKEY)
1edc1566 3363 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3364
79072805
LW		 3365 switch (how) {
3366 case 0:
22c35a8c 3367 mg->mg_virtual = &PL_vtbl_sv;
79072805 3368 break;
a0d0e21e 3369 case 'A':
22c35a8c 3370 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3371 break;
3372 case 'a':
22c35a8c 3373 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3374 break;
3375 case 'c':
3376 mg->mg_virtual = 0;
3377 break;
79072805 3378 case 'B':
22c35a8c 3379 mg->mg_virtual = &PL_vtbl_bm;
79072805 3380 break;
6cef1e77 3381 case 'D':
22c35a8c 3382 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3383 break;
3384 case 'd':
22c35a8c 3385 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3386 break;
79072805 3387 case 'E':
22c35a8c 3388 mg->mg_virtual = &PL_vtbl_env;
79072805 3389 break;
55497cff 3390 case 'f':
22c35a8c 3391 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3392 break;
79072805 3393 case 'e':
22c35a8c 3394 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3395 break;
93a17b20 3396 case 'g':
22c35a8c 3397 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3398 break;
463ee0b2 3399 case 'I':
22c35a8c 3400 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3401 break;
3402 case 'i':
22c35a8c 3403 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3404 break;
16660edb 3405 case 'k':
22c35a8c 3406 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3407 break;
79072805 3408 case 'L':
a0d0e21e 3409 SvRMAGICAL_on(sv);
93a17b20
LW		 3410 mg->mg_virtual = 0;
3411 break;
3412 case 'l':
22c35a8c 3413 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3414 break;
f93b4edd
MB		 3415#ifdef USE_THREADS
3416 case 'm':
22c35a8c 3417 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3418 break;
3419#endif /* USE_THREADS */
36477c24 3420#ifdef USE_LOCALE_COLLATE
bbce6d69 3421 case 'o':
22c35a8c 3422 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3423 break;
36477c24 3424#endif /* USE_LOCALE_COLLATE */
463ee0b2 3425 case 'P':
22c35a8c 3426 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3427 break;
3428 case 'p':
a0d0e21e 3429 case 'q':
22c35a8c 3430 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3431 break;
c277df42 3432 case 'r':
22c35a8c 3433 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3434 break;
79072805 3435 case 'S':
22c35a8c 3436 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3437 break;
3438 case 's':
22c35a8c 3439 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3440 break;
463ee0b2 3441 case 't':
22c35a8c 3442 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3443 mg->mg_len = 1;
463ee0b2 3444 break;
79072805 3445 case 'U':
22c35a8c 3446 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3447 break;
3448 case 'v':
22c35a8c 3449 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3450 break;
3451 case 'x':
22c35a8c 3452 mg->mg_virtual = &PL_vtbl_substr;
79072805 3453 break;
5f05dabc 3454 case 'y':
22c35a8c 3455 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3456 break;
79072805 3457 case '*':
22c35a8c 3458 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3459 break;
3460 case '#':
22c35a8c 3461 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3462 break;
a0d0e21e 3463 case '.':
22c35a8c 3464 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3465 break;
810b8aa5
GS		 3466 case '<':
3467 mg->mg_virtual = &PL_vtbl_backref;
3468 break;
4633a7c4
LW		 3469 case '~': /* Reserved for use by extensions not perl internals. */
3470 /* Useful for attaching extension internal data to perl vars. */
3471 /* Note that multiple extensions may clash if magical scalars */
3472 /* etc holding private data from one are passed to another. */
3473 SvRMAGICAL_on(sv);
a0d0e21e 3474 break;
79072805 3475 default:
cea2e8a9 3476 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3477 }
8990e307
LW		 3478 mg_magical(sv);
3479 if (SvGMAGICAL(sv))
3480 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3481}
3482
c461cf8f
JH		 3483/*
3484=for apidoc sv_unmagic
3485
3486Removes magic from an SV.
3487
3488=cut
3489*/
3490
463ee0b2 3491int
864dbfa3 3492Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3493{
3494 MAGIC* mg;
3495 MAGIC** mgp;
91bba347 3496 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3497 return 0;
3498 mgp = &SvMAGIC(sv);
3499 for (mg = *mgp; mg; mg = *mgp) {
3500 if (mg->mg_type == type) {
3501 MGVTBL* vtbl = mg->mg_virtual;
3502 *mgp = mg->mg_moremagic;
1d7c1841 3503 if (vtbl && vtbl->svt_free)
fc0dc3b3 3504 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3505 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3506 if (mg->mg_len >= 0)
1edc1566 3507 Safefree(mg->mg_ptr);
565764a8 3508 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3509 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3510 if (mg->mg_flags & MGf_REFCOUNTED)
3511 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3512 Safefree(mg);
3513 }
3514 else
3515 mgp = &mg->mg_moremagic;
79072805 3516 }
91bba347 3517 if (!SvMAGIC(sv)) {
463ee0b2 3518 SvMAGICAL_off(sv);
8990e307 3519 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3520 }
3521
3522 return 0;
79072805
LW		 3523}
3524
c461cf8f
JH		 3525/*
3526=for apidoc sv_rvweaken
3527
3528Weaken a reference.
3529
3530=cut
3531*/
3532
810b8aa5 3533SV *
864dbfa3 3534Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3535{
3536 SV *tsv;
3537 if (!SvOK(sv)) /* let undefs pass */
3538 return sv;
3539 if (!SvROK(sv))
cea2e8a9 3540 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3541 else if (SvWEAKREF(sv)) {
3542 dTHR;
3543 if (ckWARN(WARN_MISC))
cea2e8a9 3544 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3545 return sv;
3546 }
3547 tsv = SvRV(sv);
3548 sv_add_backref(tsv, sv);
3549 SvWEAKREF_on(sv);
3550 SvREFCNT_dec(tsv);
3551 return sv;
3552}
3553
3554STATIC void
cea2e8a9 3555S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3556{
3557 AV *av;
3558 MAGIC *mg;
3559 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3560 av = (AV*)mg->mg_obj;
3561 else {
3562 av = newAV();
3563 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3564 SvREFCNT_dec(av); /* for sv_magic */
3565 }
3566 av_push(av,sv);
3567}
3568
3569STATIC void
cea2e8a9 3570S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3571{
3572 AV *av;
3573 SV **svp;
3574 I32 i;
3575 SV *tsv = SvRV(sv);
3576 MAGIC *mg;
3577 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3578 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3579 av = (AV *)mg->mg_obj;
3580 svp = AvARRAY(av);
3581 i = AvFILLp(av);
3582 while (i >= 0) {
3583 if (svp[i] == sv) {
3584 svp[i] = &PL_sv_undef; /* XXX */
3585 }
3586 i--;
3587 }
3588}
3589
954c1994
GS		 3590/*
3591=for apidoc sv_insert
3592
3593Inserts a string at the specified offset/length within the SV. Similar to
3594the Perl substr() function.
3595
3596=cut
3597*/
3598
79072805 3599void
864dbfa3 3600Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3601{
3602 register char *big;
3603 register char *mid;
3604 register char *midend;
3605 register char *bigend;
3606 register I32 i;
6ff81951
GS		 3607 STRLEN curlen;
3608
79072805 3609
8990e307 3610 if (!bigstr)
cea2e8a9 3611 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3612 SvPV_force(bigstr, curlen);
60fa28ff 3613 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3614 if (offset + len > curlen) {
3615 SvGROW(bigstr, offset+len+1);
3616 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3617 SvCUR_set(bigstr, offset+len);
3618 }
79072805 3619
69b47968 3620 SvTAINT(bigstr);
79072805
LW		 3621 i = littlelen - len;
3622 if (i > 0) { /* string might grow */
a0d0e21e 3623 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3624 mid = big + offset + len;
3625 midend = bigend = big + SvCUR(bigstr);
3626 bigend += i;
3627 *bigend = '\0';
3628 while (midend > mid) /* shove everything down */
3629 *--bigend = *--midend;
3630 Move(little,big+offset,littlelen,char);
3631 SvCUR(bigstr) += i;
3632 SvSETMAGIC(bigstr);
3633 return;
3634 }
3635 else if (i == 0) {
463ee0b2 3636 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3637 SvSETMAGIC(bigstr);
3638 return;
3639 }
3640
463ee0b2 3641 big = SvPVX(bigstr);
79072805
LW		 3642 mid = big + offset;
3643 midend = mid + len;
3644 bigend = big + SvCUR(bigstr);
3645
3646 if (midend > bigend)
cea2e8a9 3647 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3648
3649 if (mid - big > bigend - midend) { /* faster to shorten from end */
3650 if (littlelen) {
3651 Move(little, mid, littlelen,char);
3652 mid += littlelen;
3653 }
3654 i = bigend - midend;
3655 if (i > 0) {
3656 Move(midend, mid, i,char);
3657 mid += i;
3658 }
3659 *mid = '\0';
3660 SvCUR_set(bigstr, mid - big);
3661 }
3662 /*SUPPRESS 560*/
155aba94 3663 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3664 midend -= littlelen;
3665 mid = midend;
3666 sv_chop(bigstr,midend-i);
3667 big += i;
3668 while (i--)
3669 *--midend = *--big;
3670 if (littlelen)
3671 Move(little, mid, littlelen,char);
3672 }
3673 else if (littlelen) {
3674 midend -= littlelen;
3675 sv_chop(bigstr,midend);
3676 Move(little,midend,littlelen,char);
3677 }
3678 else {
3679 sv_chop(bigstr,midend);
3680 }
3681 SvSETMAGIC(bigstr);
3682}
3683
c461cf8f
JH		 3684/*
3685=for apidoc sv_replace
3686
3687Make the first argument a copy of the second, then delete the original.
3688
3689=cut
3690*/
79072805
LW		 3691
3692void
864dbfa3 3693Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3694{
0453d815 3695 dTHR;
79072805 3696 U32 refcnt = SvREFCNT(sv);
2213622d 3697 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3698 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3699 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3700 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3701 if (SvMAGICAL(nsv))
3702 mg_free(nsv);
3703 else
3704 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3705 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3706 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3707 SvMAGICAL_off(sv);
3708 SvMAGIC(sv) = 0;
3709 }
79072805
LW		 3710 SvREFCNT(sv) = 0;
3711 sv_clear(sv);
477f5d66 3712 assert(!SvREFCNT(sv));
79072805
LW		 3713 StructCopy(nsv,sv,SV);
3714 SvREFCNT(sv) = refcnt;
1edc1566 3715 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3716 del_SV(nsv);
79072805
LW		 3717}
3718
c461cf8f
JH		 3719/*
3720=for apidoc sv_clear
3721
3722Clear an SV, making it empty. Does not free the memory used by the SV
3723itself.
3724
3725=cut
3726*/
3727
79072805 3728void
864dbfa3 3729Perl_sv_clear(pTHX_ register SV *sv)
79072805 3730{
ec12f114 3731 HV* stash;
79072805
LW		 3732 assert(sv);
3733 assert(SvREFCNT(sv) == 0);
3734
ed6116ce 3735 if (SvOBJECT(sv)) {
e858de61 3736 dTHR;
3280af22 3737 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3738 djSP;
8ebc5c01 3739 GV* destructor;
837485b6 3740 SV tmpref;
a0d0e21e 3741
837485b6
GS		 3742 Zero(&tmpref, 1, SV);
3743 sv_upgrade(&tmpref, SVt_RV);
3744 SvROK_on(&tmpref);
3745 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3746 SvREFCNT(&tmpref) = 1;
8ebc5c01 3747
4e8e7886
GS		 3748 do {
3749 stash = SvSTASH(sv);
3750 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3751 if (destructor) {
3752 ENTER;
e788e7d3 3753 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3754 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3755 EXTEND(SP, 2);
3756 PUSHMARK(SP);
837485b6 3757 PUSHs(&tmpref);
4e8e7886 3758 PUTBACK;
864dbfa3
GS		 3759 call_sv((SV*)GvCV(destructor),
3760 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3761 SvREFCNT(sv)--;
d3acc0f7 3762 POPSTACK;
3095d977 3763 SPAGAIN;
4e8e7886
GS		 3764 LEAVE;
3765 }
3766 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3767
837485b6 3768 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3769
3770 if (SvREFCNT(sv)) {
3771 if (PL_in_clean_objs)
cea2e8a9 3772 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3773 HvNAME(stash));
3774 /* DESTROY gave object new lease on life */
3775 return;
3776 }
a0d0e21e 3777 }
4e8e7886 3778
a0d0e21e 3779 if (SvOBJECT(sv)) {
4e8e7886 3780 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3781 SvOBJECT_off(sv); /* Curse the object. */
3782 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3783 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3784 }
463ee0b2 3785 }
c07a80fd 3786 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3787 mg_free(sv);
ec12f114 3788 stash = NULL;
79072805 3789 switch (SvTYPE(sv)) {
8990e307 3790 case SVt_PVIO:
df0bd2f4
GS		 3791 if (IoIFP(sv) &&
3792 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3793 IoIFP(sv) != PerlIO_stdout() &&
3794 IoIFP(sv) != PerlIO_stderr())
93578b34 3795 {
f2b5be74 3796 io_close((IO*)sv, FALSE);
93578b34 3797 }
1d7c1841 3798 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3799 PerlDir_close(IoDIRP(sv));
1d7c1841 3800 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3801 Safefree(IoTOP_NAME(sv));
3802 Safefree(IoFMT_NAME(sv));
3803 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3804 /* FALL THROUGH */
79072805 3805 case SVt_PVBM:
a0d0e21e 3806 goto freescalar;
79072805 3807 case SVt_PVCV:
748a9306 3808 case SVt_PVFM:
85e6fe83 3809 cv_undef((CV*)sv);
a0d0e21e 3810 goto freescalar;
79072805 3811 case SVt_PVHV:
85e6fe83 3812 hv_undef((HV*)sv);
a0d0e21e 3813 break;
79072805 3814 case SVt_PVAV:
85e6fe83 3815 av_undef((AV*)sv);
a0d0e21e 3816 break;
02270b4e
GS		 3817 case SVt_PVLV:
3818 SvREFCNT_dec(LvTARG(sv));
3819 goto freescalar;
a0d0e21e 3820 case SVt_PVGV:
1edc1566 3821 gp_free((GV*)sv);
a0d0e21e 3822 Safefree(GvNAME(sv));
ec12f114
JPC		 3823 /* cannot decrease stash refcount yet, as we might recursively delete
3824 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3825 of stash until current sv is completely gone.
3826 -- JohnPC, 27 Mar 1998 */
3827 stash = GvSTASH(sv);
a0d0e21e 3828 /* FALL THROUGH */
79072805 3829 case SVt_PVMG:
79072805
LW		 3830 case SVt_PVNV:
3831 case SVt_PVIV:
a0d0e21e
LW		 3832 freescalar:
3833 (void)SvOOK_off(sv);
79072805
LW		 3834 /* FALL THROUGH */
3835 case SVt_PV:
a0d0e21e 3836 case SVt_RV:
810b8aa5
GS		 3837 if (SvROK(sv)) {
3838 if (SvWEAKREF(sv))
3839 sv_del_backref(sv);
3840 else
3841 SvREFCNT_dec(SvRV(sv));
3842 }
1edc1566 3843 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3844 Safefree(SvPVX(sv));
79072805 3845 break;
a0d0e21e 3846/*
79072805 3847 case SVt_NV:
79072805 3848 case SVt_IV:
79072805
LW		 3849 case SVt_NULL:
3850 break;
a0d0e21e 3851*/
79072805
LW		 3852 }
3853
3854 switch (SvTYPE(sv)) {
3855 case SVt_NULL:
3856 break;
79072805
LW		 3857 case SVt_IV:
3858 del_XIV(SvANY(sv));
3859 break;
3860 case SVt_NV:
3861 del_XNV(SvANY(sv));
3862 break;
ed6116ce
LW		 3863 case SVt_RV:
3864 del_XRV(SvANY(sv));
3865 break;
79072805
LW		 3866 case SVt_PV:
3867 del_XPV(SvANY(sv));
3868 break;
3869 case SVt_PVIV:
3870 del_XPVIV(SvANY(sv));
3871 break;
3872 case SVt_PVNV:
3873 del_XPVNV(SvANY(sv));
3874 break;
3875 case SVt_PVMG:
3876 del_XPVMG(SvANY(sv));
3877 break;
3878 case SVt_PVLV:
3879 del_XPVLV(SvANY(sv));
3880 break;
3881 case SVt_PVAV:
3882 del_XPVAV(SvANY(sv));
3883 break;
3884 case SVt_PVHV:
3885 del_XPVHV(SvANY(sv));
3886 break;
3887 case SVt_PVCV:
3888 del_XPVCV(SvANY(sv));
3889 break;
3890 case SVt_PVGV:
3891 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3892 /* code duplication for increased performance. */
3893 SvFLAGS(sv) &= SVf_BREAK;
3894 SvFLAGS(sv) |= SVTYPEMASK;
3895 /* decrease refcount of the stash that owns this GV, if any */
3896 if (stash)
3897 SvREFCNT_dec(stash);
3898 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3899 case SVt_PVBM:
3900 del_XPVBM(SvANY(sv));
3901 break;
3902 case SVt_PVFM:
3903 del_XPVFM(SvANY(sv));
3904 break;
8990e307
LW		 3905 case SVt_PVIO:
3906 del_XPVIO(SvANY(sv));
3907 break;
79072805 3908 }
a0d0e21e 3909 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3910 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3911}
3912
3913SV *
864dbfa3 3914Perl_sv_newref(pTHX_ SV *sv)
79072805 3915{
463ee0b2 3916 if (sv)
dce16143 3917 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3918 return sv;
3919}
3920
c461cf8f
JH		 3921/*
3922=for apidoc sv_free
3923
3924Free the memory used by an SV.
3925
3926=cut
3927*/
3928
79072805 3929void
864dbfa3 3930Perl_sv_free(pTHX_ SV *sv)
79072805 3931{
0453d815 3932 dTHR;
dce16143
MB		 3933 int refcount_is_zero;
3934
79072805
LW		 3935 if (!sv)
3936 return;
a0d0e21e
LW		 3937 if (SvREFCNT(sv) == 0) {
3938 if (SvFLAGS(sv) & SVf_BREAK)
3939 return;
3280af22 3940 if (PL_in_clean_all) /* All is fair */
1edc1566 3941 return;
d689ffdd
JP		 3942 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3943 /* make sure SvREFCNT(sv)==0 happens very seldom */
3944 SvREFCNT(sv) = (~(U32)0)/2;
3945 return;
3946 }
0453d815
PM		 3947 if (ckWARN_d(WARN_INTERNAL))
3948 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3949 return;
3950 }
dce16143
MB		 3951 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3952 if (!refcount_is_zero)
8990e307 3953 return;
463ee0b2
LW		 3954#ifdef DEBUGGING
3955 if (SvTEMP(sv)) {
0453d815 3956 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3957 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3958 "Attempt to free temp prematurely: SV 0x%"UVxf,
3959 PTR2UV(sv));
79072805 3960 return;
79072805 3961 }
463ee0b2 3962#endif
d689ffdd
JP		 3963 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3964 /* make sure SvREFCNT(sv)==0 happens very seldom */
3965 SvREFCNT(sv) = (~(U32)0)/2;
3966 return;
3967 }
79072805 3968 sv_clear(sv);
477f5d66
CS		 3969 if (! SvREFCNT(sv))
3970 del_SV(sv);
79072805
LW		 3971}
3972
954c1994
GS		 3973/*
3974=for apidoc sv_len
3975
3976Returns the length of the string in the SV. See also C<SvCUR>.
3977
3978=cut
3979*/
3980
79072805 3981STRLEN
864dbfa3 3982Perl_sv_len(pTHX_ register SV *sv)
79072805 3983{
748a9306 3984 char *junk;
463ee0b2 3985 STRLEN len;
79072805
LW		 3986
3987 if (!sv)
3988 return 0;
3989
8990e307 3990 if (SvGMAGICAL(sv))
565764a8 3991 len = mg_length(sv);
8990e307 3992 else
748a9306 3993 junk = SvPV(sv, len);
463ee0b2 3994 return len;
79072805
LW		 3995}
3996
c461cf8f
JH		 3997/*
3998=for apidoc sv_len_utf8
3999
4000Returns the number of characters in the string in an SV, counting wide
4001UTF8 bytes as a single character.
4002
4003=cut
4004*/
4005
a0ed51b3 4006STRLEN
864dbfa3 4007Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 4008{
dfe13c55
GS		 4009 U8 *s;
4010 U8 *send;
a0ed51b3
LW		 4011 STRLEN len;
4012
4013 if (!sv)
4014 return 0;
4015
4016#ifdef NOTYET
4017 if (SvGMAGICAL(sv))
4018 len = mg_length(sv);
4019 else
4020#endif
dfe13c55 4021 s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4022 send = s + len;
4023 len = 0;
4024 while (s < send) {
4025 s += UTF8SKIP(s);
4026 len++;
4027 }
4028 return len;
4029}
4030
4031void
864dbfa3 4032Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4033{
dfe13c55
GS		 4034 U8 *start;
4035 U8 *s;
4036 U8 *send;
a0ed51b3
LW		 4037 I32 uoffset = *offsetp;
4038 STRLEN len;
4039
4040 if (!sv)
4041 return;
4042
dfe13c55 4043 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4044 send = s + len;
4045 while (s < send && uoffset--)
4046 s += UTF8SKIP(s);
bb40f870
GA		 4047 if (s >= send)
4048 s = send;
a0ed51b3
LW		 4049 *offsetp = s - start;
4050 if (lenp) {
4051 I32 ulen = *lenp;
4052 start = s;
4053 while (s < send && ulen--)
4054 s += UTF8SKIP(s);
bb40f870
GA		 4055 if (s >= send)
4056 s = send;
a0ed51b3
LW		 4057 *lenp = s - start;
4058 }
4059 return;
4060}
4061
4062void
864dbfa3 4063Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4064{
dfe13c55
GS		 4065 U8 *s;
4066 U8 *send;
a0ed51b3
LW		 4067 STRLEN len;
4068
4069 if (!sv)
4070 return;
4071
dfe13c55 4072 s = (U8*)SvPV(sv, len);
a0ed51b3 4073 if (len < *offsetp)
cea2e8a9 4074 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4075 send = s + *offsetp;
4076 len = 0;
4077 while (s < send) {
4078 s += UTF8SKIP(s);
4079 ++len;
4080 }
4081 if (s != send) {
0453d815
PM		 4082 dTHR;
4083 if (ckWARN_d(WARN_UTF8))
4084 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4085 --len;
4086 }
4087 *offsetp = len;
4088 return;
4089}
4090
954c1994
GS		 4091/*
4092=for apidoc sv_eq
4093
4094Returns a boolean indicating whether the strings in the two SVs are
4095identical.
4096
4097=cut
4098*/
4099
79072805 4100I32
e01b9e88 4101Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4102{
4103 char *pv1;
463ee0b2 4104 STRLEN cur1;
79072805 4105 char *pv2;
463ee0b2 4106 STRLEN cur2;
e01b9e88
SC		 4107 I32 eq = 0;
4108 bool pv1tmp = FALSE;
4109 bool pv2tmp = FALSE;
79072805 4110
e01b9e88 4111 if (!sv1) {
79072805
LW		 4112 pv1 = "";
4113 cur1 = 0;
4114 }
463ee0b2 4115 else
e01b9e88 4116 pv1 = SvPV(sv1, cur1);
79072805 4117
e01b9e88
SC		 4118 if (!sv2){
4119 pv2 = "";
4120 cur2 = 0;
92d29cee 4121 }
e01b9e88
SC		 4122 else
4123 pv2 = SvPV(sv2, cur2);
79072805 4124
e01b9e88
SC		 4125 /* do not utf8ize the comparands as a side-effect */
4126 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4127 if (SvUTF8(sv1)) {
4128 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4129 pv2tmp = TRUE;
4130 }
4131 else {
4132 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4133 pv1tmp = TRUE;
4134 }
4135 }
79072805 4136
e01b9e88
SC		 4137 if (cur1 == cur2)
4138 eq = memEQ(pv1, pv2, cur1);
4139
4140 if (pv1tmp)
4141 Safefree(pv1);
4142 if (pv2tmp)
4143 Safefree(pv2);
4144
4145 return eq;
79072805
LW		 4146}
4147
954c1994
GS		 4148/*
4149=for apidoc sv_cmp
4150
4151Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4152string in C<sv1> is less than, equal to, or greater than the string in
4153C<sv2>.
4154
4155=cut
4156*/
4157
79072805 4158I32
e01b9e88 4159Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4160{
560a288e
GS		 4161 STRLEN cur1, cur2;
4162 char *pv1, *pv2;
e01b9e88
SC		 4163 I32 cmp;
4164 bool pv1tmp = FALSE;
4165 bool pv2tmp = FALSE;
560a288e 4166
e01b9e88
SC		 4167 if (!sv1) {
4168 pv1 = "";
560a288e
GS		 4169 cur1 = 0;
4170 }
e01b9e88
SC		 4171 else
4172 pv1 = SvPV(sv1, cur1);
560a288e 4173
e01b9e88
SC		 4174 if (!sv2){
4175 pv2 = "";
560a288e
GS		 4176 cur2 = 0;
4177 }
e01b9e88
SC		 4178 else
4179 pv2 = SvPV(sv2, cur2);
79072805 4180
e01b9e88
SC		 4181 /* do not utf8ize the comparands as a side-effect */
4182 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4183 if (SvUTF8(sv1)) {
4184 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4185 pv2tmp = TRUE;
4186 }
4187 else {
4188 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4189 pv1tmp = TRUE;
4190 }
4191 }
79072805 4192
e01b9e88
SC		 4193 if (!cur1) {
4194 cmp = cur2 ? -1 : 0;
4195 } else if (!cur2) {
4196 cmp = 1;
4197 } else {
4198 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4199
4200 if (retval) {
4201 cmp = retval < 0 ? -1 : 1;
4202 } else if (cur1 == cur2) {
4203 cmp = 0;
4204 } else {
4205 cmp = cur1 < cur2 ? -1 : 1;
4206 }
4207 }
16660edb 4208
e01b9e88
SC		 4209 if (pv1tmp)
4210 Safefree(pv1);
4211 if (pv2tmp)
4212 Safefree(pv2);
16660edb 4213
e01b9e88 4214 return cmp;
bbce6d69 4215}
16660edb 4216
c461cf8f
JH		 4217/*
4218=for apidoc sv_cmp_locale
4219
4220Compares the strings in two SVs in a locale-aware manner. See
4221L</sv_cmp_locale>
4222
4223=cut
4224*/
4225
bbce6d69 4226I32
864dbfa3 4227Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4228{
36477c24 4229#ifdef USE_LOCALE_COLLATE
16660edb 4230
bbce6d69 4231 char *pv1, *pv2;
4232 STRLEN len1, len2;
4233 I32 retval;
16660edb 4234
3280af22 4235 if (PL_collation_standard)
bbce6d69 4236 goto raw_compare;
16660edb 4237
bbce6d69 4238 len1 = 0;
8ac85365 4239 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4240 len2 = 0;
8ac85365 4241 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4242
bbce6d69 4243 if (!pv1 || !len1) {
4244 if (pv2 && len2)
4245 return -1;
4246 else
4247 goto raw_compare;
4248 }
4249 else {
4250 if (!pv2 || !len2)
4251 return 1;
4252 }
16660edb 4253
bbce6d69 4254 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4255
bbce6d69 4256 if (retval)
16660edb 4257 return retval < 0 ? -1 : 1;
4258
bbce6d69 4259 /*
4260 * When the result of collation is equality, that doesn't mean
4261 * that there are no differences -- some locales exclude some
4262 * characters from consideration. So to avoid false equalities,
4263 * we use the raw string as a tiebreaker.
4264 */
16660edb 4265
bbce6d69 4266 raw_compare:
4267 /* FALL THROUGH */
16660edb 4268
36477c24 4269#endif /* USE_LOCALE_COLLATE */
16660edb 4270
bbce6d69 4271 return sv_cmp(sv1, sv2);
4272}
79072805 4273
36477c24 4274#ifdef USE_LOCALE_COLLATE
7a4c00b4 4275/*
4276 * Any scalar variable may carry an 'o' magic that contains the
4277 * scalar data of the variable transformed to such a format that
4278 * a normal memory comparison can be used to compare the data
4279 * according to the locale settings.
4280 */
bbce6d69 4281char *
864dbfa3 4282Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4283{
7a4c00b4 4284 MAGIC *mg;
16660edb 4285
8ac85365 4286 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4287 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4288 char *s, *xf;
4289 STRLEN len, xlen;
4290
7a4c00b4 4291 if (mg)
4292 Safefree(mg->mg_ptr);
bbce6d69 4293 s = SvPV(sv, len);
4294 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4295 if (SvREADONLY(sv)) {
4296 SAVEFREEPV(xf);
4297 *nxp = xlen;
3280af22 4298 return xf + sizeof(PL_collation_ix);
ff0cee69 4299 }
7a4c00b4 4300 if (! mg) {
4301 sv_magic(sv, 0, 'o', 0, 0);
4302 mg = mg_find(sv, 'o');
4303 assert(mg);
bbce6d69 4304 }
7a4c00b4 4305 mg->mg_ptr = xf;
565764a8 4306 mg->mg_len = xlen;
7a4c00b4 4307 }
4308 else {
ff0cee69 4309 if (mg) {
4310 mg->mg_ptr = NULL;
565764a8 4311 mg->mg_len = -1;
ff0cee69 4312 }
bbce6d69 4313 }
4314 }
7a4c00b4 4315 if (mg && mg->mg_ptr) {
565764a8 4316 *nxp = mg->mg_len;
3280af22 4317 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4318 }
4319 else {
4320 *nxp = 0;
4321 return NULL;
16660edb 4322 }
79072805
LW		 4323}
4324
36477c24 4325#endif /* USE_LOCALE_COLLATE */
bbce6d69 4326
c461cf8f
JH		 4327/*
4328=for apidoc sv_gets
4329
4330Get a line from the filehandle and store it into the SV, optionally
4331appending to the currently-stored string.
4332
4333=cut
4334*/
4335
79072805 4336char *
864dbfa3 4337Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4338{
aeea060c 4339 dTHR;
c07a80fd 4340 char *rsptr;
4341 STRLEN rslen;
4342 register STDCHAR rslast;
4343 register STDCHAR *bp;
4344 register I32 cnt;
4345 I32 i;
4346
2213622d 4347 SV_CHECK_THINKFIRST(sv);
6fc92669 4348 (void)SvUPGRADE(sv, SVt_PV);
99491443 4349
ff68c719 4350 SvSCREAM_off(sv);
c07a80fd 4351
3280af22 4352 if (RsSNARF(PL_rs)) {
c07a80fd 4353 rsptr = NULL;
4354 rslen = 0;
4355 }
3280af22 4356 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4357 I32 recsize, bytesread;
4358 char *buffer;
4359
4360 /* Grab the size of the record we're getting */
3280af22 4361 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4362 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4363 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4364 /* Go yank in */
4365#ifdef VMS
4366 /* VMS wants read instead of fread, because fread doesn't respect */
4367 /* RMS record boundaries. This is not necessarily a good thing to be */
4368 /* doing, but we've got no other real choice */
4369 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4370#else
4371 bytesread = PerlIO_read(fp, buffer, recsize);
4372#endif
4373 SvCUR_set(sv, bytesread);
e670df4e 4374 buffer[bytesread] = '\0';
5b2b9c68
HM		 4375 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4376 }
3280af22 4377 else if (RsPARA(PL_rs)) {
c07a80fd 4378 rsptr = "\n\n";
4379 rslen = 2;
4380 }
4381 else
3280af22 4382 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4383 rslast = rslen ? rsptr[rslen - 1] : '\0';
4384
3280af22 4385 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4386 do { /* to make sure file boundaries work right */
760ac839 4387 if (PerlIO_eof(fp))
a0d0e21e 4388 return 0;
760ac839 4389 i = PerlIO_getc(fp);
79072805 4390 if (i != '\n') {
a0d0e21e
LW		 4391 if (i == -1)
4392 return 0;
760ac839 4393 PerlIO_ungetc(fp,i);
79072805
LW		 4394 break;
4395 }
4396 } while (i != EOF);
4397 }
c07a80fd 4398
760ac839
LW		 4399 /* See if we know enough about I/O mechanism to cheat it ! */
4400
4401 /* This used to be #ifdef test - it is made run-time test for ease
4402 of abstracting out stdio interface. One call should be cheap
4403 enough here - and may even be a macro allowing compile
4404 time optimization.
4405 */
4406
4407 if (PerlIO_fast_gets(fp)) {
4408
4409 /*
4410 * We're going to steal some values from the stdio struct
4411 * and put EVERYTHING in the innermost loop into registers.
4412 */
4413 register STDCHAR *ptr;
4414 STRLEN bpx;
4415 I32 shortbuffered;
4416
16660edb 4417#if defined(VMS) && defined(PERLIO_IS_STDIO)
4418 /* An ungetc()d char is handled separately from the regular
4419 * buffer, so we getc() it back out and stuff it in the buffer.
4420 */
4421 i = PerlIO_getc(fp);
4422 if (i == EOF) return 0;
4423 *(--((*fp)->_ptr)) = (unsigned char) i;
4424 (*fp)->_cnt++;
4425#endif
c07a80fd 4426
c2960299 4427 /* Here is some breathtakingly efficient cheating */
c07a80fd 4428
a20bf0c3 4429 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4430 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4431 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4432 if (cnt > 80 && SvLEN(sv) > append) {
4433 shortbuffered = cnt - SvLEN(sv) + append + 1;
4434 cnt -= shortbuffered;
4435 }
4436 else {
4437 shortbuffered = 0;
bbce6d69 4438 /* remember that cnt can be negative */
4439 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4440 }
4441 }
4442 else
4443 shortbuffered = 0;
c07a80fd 4444 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4445 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4446 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4447 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4448 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4449 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4450 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4451 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4452 for (;;) {
4453 screamer:
93a17b20 4454 if (cnt > 0) {
c07a80fd 4455 if (rslen) {
760ac839
LW		 4456 while (cnt > 0) { /* this | eat */
4457 cnt--;
c07a80fd 4458 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4459 goto thats_all_folks; /* screams | sed :-) */
4460 }
4461 }
4462 else {
36477c24 4463 Copy(ptr, bp, cnt, char); /* this | eat */
c07a80fd 4464 bp += cnt; /* screams | dust */
4465 ptr += cnt; /* louder | sed :-) */
a5f75d66 4466 cnt = 0;
93a17b20 4467 }
79072805
LW		 4468 }
4469
748a9306 4470 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4471 cnt = shortbuffered;
4472 shortbuffered = 0;
c07a80fd 4473 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4474 SvCUR_set(sv, bpx);
4475 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4476 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4477 continue;
4478 }
4479
16660edb 4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4481 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4482 PTR2UV(ptr),(long)cnt));
a20bf0c3 4483 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4484 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4485 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4486 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4487 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
16660edb 4488 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4489 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4490 another abstraction. */
760ac839 4491 i = PerlIO_getc(fp); /* get more characters */
16660edb 4492 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4493 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4494 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4495 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4496 cnt = PerlIO_get_cnt(fp);
4497 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4498 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4499 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4500
748a9306
LW		 4501 if (i == EOF) /* all done for ever? */
4502 goto thats_really_all_folks;
4503
c07a80fd 4504 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4505 SvCUR_set(sv, bpx);
4506 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4507 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4508
760ac839 4509 *bp++ = i; /* store character from PerlIO_getc */
79072805 4510
c07a80fd 4511 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4512 goto thats_all_folks;
79072805
LW		 4513 }
4514
4515thats_all_folks:
c07a80fd 4516 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4517 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4518 goto screamer; /* go back to the fray */
79072805
LW		 4519thats_really_all_folks:
4520 if (shortbuffered)
4521 cnt += shortbuffered;
16660edb 4522 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4523 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4524 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4525 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4526 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4527 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4528 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4529 *bp = '\0';
760ac839 4530 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4531 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4532 "Screamer: done, len=%ld, string=|%.*s|\n",
4533 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4534 }
4535 else
79072805 4536 {
4d2c4e07 4537#ifndef EPOC
760ac839 4538 /*The big, slow, and stupid way */
c07a80fd 4539 STDCHAR buf[8192];
4d2c4e07
OF		 4540#else
4541 /* Need to work around EPOC SDK features */
4542 /* On WINS: MS VC5 generates calls to _chkstk, */
4543 /* if a `large' stack frame is allocated */
4544 /* gcc on MARM does not generate calls like these */
4545 STDCHAR buf[1024];
4546#endif
79072805 4547
760ac839 4548screamer2:
c07a80fd 4549 if (rslen) {
760ac839
LW		 4550 register STDCHAR *bpe = buf + sizeof(buf);
4551 bp = buf;
4552 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4553 ; /* keep reading */
4554 cnt = bp - buf;
c07a80fd 4555 }
4556 else {
760ac839 4557 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4558 /* Accomodate broken VAXC compiler, which applies U8 cast to
4559 * both args of ?: operator, causing EOF to change into 255
4560 */
4561 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4562 }
79072805
LW		 4563
4564 if (append)
760ac839 4565 sv_catpvn(sv, (char *) buf, cnt);
79072805 4566 else
760ac839 4567 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4568
4569 if (i != EOF && /* joy */
4570 (!rslen ||
4571 SvCUR(sv) < rslen ||
36477c24 4572 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4573 {
4574 append = -1;
63e4d877
CS		 4575 /*
4576 * If we're reading from a TTY and we get a short read,
4577 * indicating that the user hit his EOF character, we need
4578 * to notice it now, because if we try to read from the TTY
4579 * again, the EOF condition will disappear.
4580 *
4581 * The comparison of cnt to sizeof(buf) is an optimization
4582 * that prevents unnecessary calls to feof().
4583 *
4584 * - jik 9/25/96
4585 */
4586 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4587 goto screamer2;
79072805
LW		 4588 }
4589 }
4590
3280af22 4591 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4592 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4593 i = PerlIO_getc(fp);
79072805 4594 if (i != '\n') {
760ac839 4595 PerlIO_ungetc(fp,i);
79072805
LW		 4596 break;
4597 }
4598 }
4599 }
c07a80fd 4600
4601 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4602}
4603
760ac839 4604
954c1994
GS		 4605/*
4606=for apidoc sv_inc
4607
4608Auto-increment of the value in the SV.
4609
4610=cut
4611*/
4612
79072805 4613void
864dbfa3 4614Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4615{
4616 register char *d;
463ee0b2 4617 int flags;
79072805
LW		 4618
4619 if (!sv)
4620 return;
b23a5f78
GB		 4621 if (SvGMAGICAL(sv))
4622 mg_get(sv);
ed6116ce 4623 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4624 if (SvREADONLY(sv)) {
4625 dTHR;
3280af22 4626 if (PL_curcop != &PL_compiling)
cea2e8a9 4627 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4628 }
a0d0e21e 4629 if (SvROK(sv)) {
b5be31e9 4630 IV i;
9e7bc3e8
JD		 4631 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4632 return;
56431972 4633 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4634 sv_unref(sv);
4635 sv_setiv(sv, i);
a0d0e21e 4636 }
ed6116ce 4637 }
8990e307 4638 flags = SvFLAGS(sv);
8990e307 4639 if (flags & SVp_NOK) {
a0d0e21e 4640 (void)SvNOK_only(sv);
55497cff 4641 SvNVX(sv) += 1.0;
4642 return;
4643 }
4644 if (flags & SVp_IOK) {
25da4f38
IZ		 4645 if (SvIsUV(sv)) {
4646 if (SvUVX(sv) == UV_MAX)
65202027 4647 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4648 else
4649 (void)SvIOK_only_UV(sv);
4650 ++SvUVX(sv);
4651 } else {
4652 if (SvIVX(sv) == IV_MAX)
65202027 4653 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4654 else {
4655 (void)SvIOK_only(sv);
4656 ++SvIVX(sv);
4657 }
55497cff 4658 }
79072805
LW		 4659 return;
4660 }
8990e307 4661 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4662 if ((flags & SVTYPEMASK) < SVt_PVNV)
4663 sv_upgrade(sv, SVt_NV);
463ee0b2 4664 SvNVX(sv) = 1.0;
a0d0e21e 4665 (void)SvNOK_only(sv);
79072805
LW		 4666 return;
4667 }
463ee0b2 4668 d = SvPVX(sv);
79072805
LW		 4669 while (isALPHA(*d)) d++;
4670 while (isDIGIT(*d)) d++;
4671 if (*d) {
097ee67d 4672 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4673 return;
4674 }
4675 d--;
463ee0b2 4676 while (d >= SvPVX(sv)) {
79072805
LW		 4677 if (isDIGIT(*d)) {
4678 if (++*d <= '9')
4679 return;
4680 *(d--) = '0';
4681 }
4682 else {
9d116dd7
JH		 4683#ifdef EBCDIC
4684 /* MKS: The original code here died if letters weren't consecutive.
4685 * at least it didn't have to worry about non-C locales. The
4686 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4687 * arranged in order (although not consecutively) and that only
4688 * [A-Za-z] are accepted by isALPHA in the C locale.
4689 */
4690 if (*d != 'z' && *d != 'Z') {
4691 do { ++*d; } while (!isALPHA(*d));
4692 return;
4693 }
4694 *(d--) -= 'z' - 'a';
4695#else
79072805
LW		 4696 ++*d;
4697 if (isALPHA(*d))
4698 return;
4699 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4700#endif
79072805
LW		 4701 }
4702 }
4703 /* oh,oh, the number grew */
4704 SvGROW(sv, SvCUR(sv) + 2);
4705 SvCUR(sv)++;
463ee0b2 4706 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4707 *d = d[-1];
4708 if (isDIGIT(d[1]))
4709 *d = '1';
4710 else
4711 *d = d[1];
4712}
4713
954c1994
GS		 4714/*
4715=for apidoc sv_dec
4716
4717Auto-decrement of the value in the SV.
4718
4719=cut
4720*/
4721
79072805 4722void
864dbfa3 4723Perl_sv_dec(pTHX_ register SV *sv)
79072805 4724{
463ee0b2
LW		 4725 int flags;
4726
79072805
LW		 4727 if (!sv)
4728 return;
b23a5f78
GB		 4729 if (SvGMAGICAL(sv))
4730 mg_get(sv);
ed6116ce 4731 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4732 if (SvREADONLY(sv)) {
4733 dTHR;
3280af22 4734 if (PL_curcop != &PL_compiling)
cea2e8a9 4735 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4736 }
a0d0e21e 4737 if (SvROK(sv)) {
b5be31e9 4738 IV i;
9e7bc3e8
JD		 4739 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4740 return;
56431972 4741 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4742 sv_unref(sv);
4743 sv_setiv(sv, i);
a0d0e21e 4744 }
ed6116ce 4745 }
8990e307 4746 flags = SvFLAGS(sv);
8990e307 4747 if (flags & SVp_NOK) {
463ee0b2 4748 SvNVX(sv) -= 1.0;
a0d0e21e 4749 (void)SvNOK_only(sv);
79072805
LW		 4750 return;
4751 }
55497cff 4752 if (flags & SVp_IOK) {
25da4f38
IZ		 4753 if (SvIsUV(sv)) {
4754 if (SvUVX(sv) == 0) {
4755 (void)SvIOK_only(sv);
4756 SvIVX(sv) = -1;
4757 }
4758 else {
4759 (void)SvIOK_only_UV(sv);
4760 --SvUVX(sv);
4761 }
4762 } else {
4763 if (SvIVX(sv) == IV_MIN)
65202027 4764 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4765 else {
4766 (void)SvIOK_only(sv);
4767 --SvIVX(sv);
4768 }
55497cff 4769 }
4770 return;
4771 }
8990e307 4772 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4773 if ((flags & SVTYPEMASK) < SVt_PVNV)
4774 sv_upgrade(sv, SVt_NV);
463ee0b2 4775 SvNVX(sv) = -1.0;
a0d0e21e 4776 (void)SvNOK_only(sv);
79072805
LW		 4777 return;
4778 }
097ee67d 4779 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4780}
4781
954c1994
GS		 4782/*
4783=for apidoc sv_mortalcopy
4784
4785Creates a new SV which is a copy of the original SV. The new SV is marked
4786as mortal.
4787
4788=cut
4789*/
4790
79072805
LW		 4791/* Make a string that will exist for the duration of the expression
4792 * evaluation. Actually, it may have to last longer than that, but
4793 * hopefully we won't free it until it has been assigned to a
4794 * permanent location. */
4795
4796SV *
864dbfa3 4797Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4798{
11343788 4799 dTHR;
463ee0b2 4800 register SV *sv;
79072805 4801
4561caa4 4802 new_SV(sv);
79072805 4803 sv_setsv(sv,oldstr);
677b06e3
GS		 4804 EXTEND_MORTAL(1);
4805 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4806 SvTEMP_on(sv);
4807 return sv;
4808}
4809
954c1994
GS		 4810/*
4811=for apidoc sv_newmortal
4812
4813Creates a new SV which is mortal. The reference count of the SV is set to 1.
4814
4815=cut
4816*/
4817
8990e307 4818SV *
864dbfa3 4819Perl_sv_newmortal(pTHX)
8990e307 4820{
11343788 4821 dTHR;
8990e307
LW		 4822 register SV *sv;
4823
4561caa4 4824 new_SV(sv);
8990e307 4825 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4826 EXTEND_MORTAL(1);
4827 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4828 return sv;
4829}
4830
954c1994
GS		 4831/*
4832=for apidoc sv_2mortal
4833
4834Marks an SV as mortal. The SV will be destroyed when the current context
4835ends.
4836
4837=cut
4838*/
4839
79072805
LW		 4840/* same thing without the copying */
4841
4842SV *
864dbfa3 4843Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4844{
11343788 4845 dTHR;
79072805
LW		 4846 if (!sv)
4847 return sv;
d689ffdd 4848 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4849 return sv;
677b06e3
GS		 4850 EXTEND_MORTAL(1);
4851 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4852 SvTEMP_on(sv);
79072805
LW		 4853 return sv;
4854}
4855
954c1994
GS		 4856/*
4857=for apidoc newSVpv
4858
4859Creates a new SV and copies a string into it. The reference count for the
4860SV is set to 1. If C<len> is zero, Perl will compute the length using
4861strlen(). For efficiency, consider using C<newSVpvn> instead.
4862
4863=cut
4864*/
4865
79072805 4866SV *
864dbfa3 4867Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4868{
463ee0b2 4869 register SV *sv;
79072805 4870
4561caa4 4871 new_SV(sv);
79072805
LW		 4872 if (!len)
4873 len = strlen(s);
4874 sv_setpvn(sv,s,len);
4875 return sv;
4876}
4877
954c1994
GS		 4878/*
4879=for apidoc newSVpvn
4880
4881Creates a new SV and copies a string into it. The reference count for the
4882SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4883string. You are responsible for ensuring that the source string is at least
4884C<len> bytes long.
4885
4886=cut
4887*/
4888
9da1e3b5 4889SV *
864dbfa3 4890Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4891{
4892 register SV *sv;
4893
4894 new_SV(sv);
9da1e3b5
MUN		 4895 sv_setpvn(sv,s,len);
4896 return sv;
4897}
4898
cea2e8a9 4899#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4900SV *
cea2e8a9 4901Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4902{
cea2e8a9 4903 dTHX;
46fc3d4c 4904 register SV *sv;
4905 va_list args;
46fc3d4c 4906 va_start(args, pat);
c5be433b 4907 sv = vnewSVpvf(pat, &args);
46fc3d4c 4908 va_end(args);
4909 return sv;
4910}
cea2e8a9 4911#endif
46fc3d4c 4912
954c1994
GS		 4913/*
4914=for apidoc newSVpvf
4915
4916Creates a new SV an initialize it with the string formatted like
4917C<sprintf>.
4918
4919=cut
4920*/
4921
cea2e8a9
GS		 4922SV *
4923Perl_newSVpvf(pTHX_ const char* pat, ...)
4924{
4925 register SV *sv;
4926 va_list args;
cea2e8a9 4927 va_start(args, pat);
c5be433b 4928 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4929 va_end(args);
4930 return sv;
4931}
46fc3d4c 4932
79072805 4933SV *
c5be433b
GS		 4934Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4935{
4936 register SV *sv;
4937 new_SV(sv);
4938 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4939 return sv;
4940}
4941
954c1994
GS		 4942/*
4943=for apidoc newSVnv
4944
4945Creates a new SV and copies a floating point value into it.
4946The reference count for the SV is set to 1.
4947
4948=cut
4949*/
4950
c5be433b 4951SV *
65202027 4952Perl_newSVnv(pTHX_ NV n)
79072805 4953{
463ee0b2 4954 register SV *sv;
79072805 4955
4561caa4 4956 new_SV(sv);
79072805
LW		 4957 sv_setnv(sv,n);
4958 return sv;
4959}
4960
954c1994
GS		 4961/*
4962=for apidoc newSViv
4963
4964Creates a new SV and copies an integer into it. The reference count for the
4965SV is set to 1.
4966
4967=cut
4968*/
4969
79072805 4970SV *
864dbfa3 4971Perl_newSViv(pTHX_ IV i)
79072805 4972{
463ee0b2 4973 register SV *sv;
79072805 4974
4561caa4 4975 new_SV(sv);
79072805
LW		 4976 sv_setiv(sv,i);
4977 return sv;
4978}
4979
954c1994 4980/*
1a3327fb
JH		 4981=for apidoc newSVuv
4982
4983Creates a new SV and copies an unsigned integer into it.
4984The reference count for the SV is set to 1.
4985
4986=cut
4987*/
4988
4989SV *
4990Perl_newSVuv(pTHX_ UV u)
4991{
4992 register SV *sv;
4993
4994 new_SV(sv);
4995 sv_setuv(sv,u);
4996 return sv;
4997}
4998
4999/*
954c1994
GS		 5000=for apidoc newRV_noinc
5001
5002Creates an RV wrapper for an SV. The reference count for the original
5003SV is B<not> incremented.
5004
5005=cut
5006*/
5007
2304df62 5008SV *
864dbfa3 5009Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5010{
11343788 5011 dTHR;
2304df62
AD		 5012 register SV *sv;
5013
4561caa4 5014 new_SV(sv);
2304df62 5015 sv_upgrade(sv, SVt_RV);
76e3520e 5016 SvTEMP_off(tmpRef);
d689ffdd 5017 SvRV(sv) = tmpRef;
2304df62 5018 SvROK_on(sv);
2304df62
AD		 5019 return sv;
5020}
5021
954c1994 5022/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5023SV *
864dbfa3 5024Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5025{
5f6447b6 5026 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5027}
5f05dabc 5028
954c1994
GS		 5029/*
5030=for apidoc newSVsv
5031
5032Creates a new SV which is an exact duplicate of the original SV.
5033
5034=cut
5035*/
5036
79072805
LW		 5037/* make an exact duplicate of old */
5038
5039SV *
864dbfa3 5040Perl_newSVsv(pTHX_ register SV *old)
79072805 5041{
0453d815 5042 dTHR;
463ee0b2 5043 register SV *sv;
79072805
LW		 5044
5045 if (!old)
5046 return Nullsv;
8990e307 5047 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5048 if (ckWARN_d(WARN_INTERNAL))
5049 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5050 return Nullsv;
5051 }
4561caa4 5052 new_SV(sv);
ff68c719 5053 if (SvTEMP(old)) {
5054 SvTEMP_off(old);
463ee0b2 5055 sv_setsv(sv,old);
ff68c719 5056 SvTEMP_on(old);
79072805
LW		 5057 }
5058 else
463ee0b2
LW		 5059 sv_setsv(sv,old);
5060 return sv;
79072805
LW		 5061}
5062
5063void
864dbfa3 5064Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5065{
5066 register HE *entry;
5067 register GV *gv;
5068 register SV *sv;
5069 register I32 i;
5070 register PMOP *pm;
5071 register I32 max;
4802d5d7 5072 char todo[PERL_UCHAR_MAX+1];
79072805 5073
49d8d3a1
MB		 5074 if (!stash)
5075 return;
5076
79072805
LW		 5077 if (!*s) { /* reset ?? searches */
5078 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5079 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5080 }
5081 return;
5082 }
5083
5084 /* reset variables */
5085
5086 if (!HvARRAY(stash))
5087 return;
463ee0b2
LW		 5088
5089 Zero(todo, 256, char);
79072805 5090 while (*s) {
4802d5d7 5091 i = (unsigned char)*s;
79072805
LW		 5092 if (s[1] == '-') {
5093 s += 2;
5094 }
4802d5d7 5095 max = (unsigned char)*s++;
79072805 5096 for ( ; i <= max; i++) {
463ee0b2
LW		 5097 todo[i] = 1;
5098 }
a0d0e21e 5099 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5100 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5101 entry;
5102 entry = HeNEXT(entry))
5103 {
1edc1566 5104 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5105 continue;
1edc1566 5106 gv = (GV*)HeVAL(entry);
79072805 5107 sv = GvSV(gv);
9e35f4b3
GS		 5108 if (SvTHINKFIRST(sv)) {
5109 if (!SvREADONLY(sv) && SvROK(sv))
5110 sv_unref(sv);
5111 continue;
5112 }
a0d0e21e 5113 (void)SvOK_off(sv);
79072805
LW		 5114 if (SvTYPE(sv) >= SVt_PV) {
5115 SvCUR_set(sv, 0);
463ee0b2
LW		 5116 if (SvPVX(sv) != Nullch)
5117 *SvPVX(sv) = '\0';
44a8e56a 5118 SvTAINT(sv);
79072805
LW		 5119 }
5120 if (GvAV(gv)) {
5121 av_clear(GvAV(gv));
5122 }
44a8e56a 5123 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5124 hv_clear(GvHV(gv));
a0d0e21e 5125#ifndef VMS /* VMS has no environ array */
3280af22 5126 if (gv == PL_envgv)
79072805 5127 environ[0] = Nullch;
a0d0e21e 5128#endif
79072805
LW		 5129 }
5130 }
5131 }
5132 }
5133}
5134
46fc3d4c 5135IO*
864dbfa3 5136Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5137{
5138 IO* io;
5139 GV* gv;
2d8e6c8d 5140 STRLEN n_a;
46fc3d4c 5141
5142 switch (SvTYPE(sv)) {
5143 case SVt_PVIO:
5144 io = (IO*)sv;
5145 break;
5146 case SVt_PVGV:
5147 gv = (GV*)sv;
5148 io = GvIO(gv);
5149 if (!io)
cea2e8a9 5150 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5151 break;
5152 default:
5153 if (!SvOK(sv))
cea2e8a9 5154 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5155 if (SvROK(sv))
5156 return sv_2io(SvRV(sv));
2d8e6c8d 5157 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5158 if (gv)
5159 io = GvIO(gv);
5160 else
5161 io = 0;
5162 if (!io)
cea2e8a9 5163 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5164 break;
5165 }
5166 return io;
5167}
5168
79072805 5169CV *
864dbfa3 5170Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5171{
5172 GV *gv;
5173 CV *cv;
2d8e6c8d 5174 STRLEN n_a;
79072805
LW		 5175
5176 if (!sv)
93a17b20 5177 return *gvp = Nullgv, Nullcv;
79072805 5178 switch (SvTYPE(sv)) {
79072805
LW		 5179 case SVt_PVCV:
5180 *st = CvSTASH(sv);
5181 *gvp = Nullgv;
5182 return (CV*)sv;
5183 case SVt_PVHV:
5184 case SVt_PVAV:
5185 *gvp = Nullgv;
5186 return Nullcv;
8990e307
LW		 5187 case SVt_PVGV:
5188 gv = (GV*)sv;
a0d0e21e 5189 *gvp = gv;
8990e307
LW		 5190 *st = GvESTASH(gv);
5191 goto fix_gv;
5192
79072805 5193 default:
a0d0e21e
LW		 5194 if (SvGMAGICAL(sv))
5195 mg_get(sv);
5196 if (SvROK(sv)) {
0f4592ef 5197 dTHR;
f5284f61
IZ		 5198 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5199 tryAMAGICunDEREF(to_cv);
5200
62f274bf
GS		 5201 sv = SvRV(sv);
5202 if (SvTYPE(sv) == SVt_PVCV) {
5203 cv = (CV*)sv;
5204 *gvp = Nullgv;
5205 *st = CvSTASH(cv);
5206 return cv;
5207 }
5208 else if(isGV(sv))
5209 gv = (GV*)sv;
5210 else
cea2e8a9 5211 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5212 }
62f274bf 5213 else if (isGV(sv))
79072805
LW		 5214 gv = (GV*)sv;
5215 else
2d8e6c8d 5216 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5217 *gvp = gv;
5218 if (!gv)
5219 return Nullcv;
5220 *st = GvESTASH(gv);
8990e307 5221 fix_gv:
8ebc5c01 5222 if (lref && !GvCVu(gv)) {
4633a7c4 5223 SV *tmpsv;
748a9306 5224 ENTER;
4633a7c4 5225 tmpsv = NEWSV(704,0);
16660edb 5226 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5227 /* XXX this is probably not what they think they're getting.
5228 * It has the same effect as "sub name;", i.e. just a forward
5229 * declaration! */
774d564b 5230 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5231 newSVOP(OP_CONST, 0, tmpsv),
5232 Nullop,
8990e307 5233 Nullop);
748a9306 5234 LEAVE;
8ebc5c01 5235 if (!GvCVu(gv))
cea2e8a9 5236 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5237 }
8ebc5c01 5238 return GvCVu(gv);
79072805
LW		 5239 }
5240}
5241
c461cf8f
JH		 5242/*
5243=for apidoc sv_true
5244
5245Returns true if the SV has a true value by Perl's rules.
5246
5247=cut
5248*/
5249
79072805 5250I32
864dbfa3 5251Perl_sv_true(pTHX_ register SV *sv)
79072805 5252{
4e35701f 5253 dTHR;
8990e307
LW		 5254 if (!sv)
5255 return 0;
79072805 5256 if (SvPOK(sv)) {
4e35701f
NIS		 5257 register XPV* tXpv;
5258 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5259 (tXpv->xpv_cur > 1 ||
4e35701f 5260 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5261 return 1;
5262 else
5263 return 0;
5264 }
5265 else {
5266 if (SvIOK(sv))
463ee0b2 5267 return SvIVX(sv) != 0;
79072805
LW		 5268 else {
5269 if (SvNOK(sv))
463ee0b2 5270 return SvNVX(sv) != 0.0;
79072805 5271 else
463ee0b2 5272 return sv_2bool(sv);
79072805
LW		 5273 }
5274 }
5275}
79072805 5276
ff68c719 5277IV
864dbfa3 5278Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5279{
25da4f38
IZ		 5280 if (SvIOK(sv)) {
5281 if (SvIsUV(sv))
5282 return (IV)SvUVX(sv);
ff68c719 5283 return SvIVX(sv);
25da4f38 5284 }
ff68c719 5285 return sv_2iv(sv);
85e6fe83 5286}
85e6fe83 5287
ff68c719 5288UV
864dbfa3 5289Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5290{
25da4f38
IZ		 5291 if (SvIOK(sv)) {
5292 if (SvIsUV(sv))
5293 return SvUVX(sv);
5294 return (UV)SvIVX(sv);
5295 }
ff68c719 5296 return sv_2uv(sv);
5297}
85e6fe83 5298
65202027 5299NV
864dbfa3 5300Perl_sv_nv(pTHX_ register SV *sv)
79072805 5301{
ff68c719 5302 if (SvNOK(sv))
5303 return SvNVX(sv);
5304 return sv_2nv(sv);
79072805 5305}
79072805 5306
79072805 5307char *
864dbfa3 5308Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5309{
5310 STRLEN n_a;
5311
5312 if (SvPOK(sv))
5313 return SvPVX(sv);
5314
5315 return sv_2pv(sv, &n_a);
5316}
5317
5318char *
864dbfa3 5319Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5320{
85e6fe83
LW		 5321 if (SvPOK(sv)) {
5322 *lp = SvCUR(sv);
a0d0e21e 5323 return SvPVX(sv);
85e6fe83 5324 }
463ee0b2 5325 return sv_2pv(sv, lp);
79072805 5326}
79072805 5327
c461cf8f
JH		 5328/*
5329=for apidoc sv_pvn_force
5330
5331Get a sensible string out of the SV somehow.
5332
5333=cut
5334*/
5335
a0d0e21e 5336char *
864dbfa3 5337Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5338{
5339 char *s;
5340
6fc92669
GS		 5341 if (SvTHINKFIRST(sv) && !SvROK(sv))
5342 sv_force_normal(sv);
a0d0e21e
LW		 5343
5344 if (SvPOK(sv)) {
5345 *lp = SvCUR(sv);
5346 }
5347 else {
748a9306 5348 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5349 dTHR;
cea2e8a9 5350 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5351 PL_op_name[PL_op->op_type]);
a0d0e21e 5352 }
4633a7c4
LW		 5353 else
5354 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5355 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5356 STRLEN len = *lp;
5357
5358 if (SvROK(sv))
5359 sv_unref(sv);
5360 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5361 SvGROW(sv, len + 1);
5362 Move(s,SvPVX(sv),len,char);
5363 SvCUR_set(sv, len);
5364 *SvEND(sv) = '\0';
5365 }
5366 if (!SvPOK(sv)) {
5367 SvPOK_on(sv); /* validate pointer */
5368 SvTAINT(sv);
1d7c1841
GS		 5369 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5370 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5371 }
5372 }
5373 return SvPVX(sv);
5374}
5375
5376char *
7340a771
GS		 5377Perl_sv_pvbyte(pTHX_ SV *sv)
5378{
5379 return sv_pv(sv);
5380}
5381
5382char *
5383Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5384{
5385 return sv_pvn(sv,lp);
5386}
5387
5388char *
5389Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5390{
5391 return sv_pvn_force(sv,lp);
5392}
5393
5394char *
5395Perl_sv_pvutf8(pTHX_ SV *sv)
5396{
560a288e 5397 sv_utf8_upgrade(sv);
7340a771
GS		 5398 return sv_pv(sv);
5399}
5400
5401char *
5402Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5403{
560a288e 5404 sv_utf8_upgrade(sv);
7340a771
GS		 5405 return sv_pvn(sv,lp);
5406}
5407
c461cf8f
JH		 5408/*
5409=for apidoc sv_pvutf8n_force
5410
5411Get a sensible UTF8-encoded string out of the SV somehow. See
5412L</sv_pvn_force>.
5413
5414=cut
5415*/
5416
7340a771
GS		 5417char *
5418Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5419{
560a288e 5420 sv_utf8_upgrade(sv);
7340a771
GS		 5421 return sv_pvn_force(sv,lp);
5422}
5423
c461cf8f
JH		 5424/*
5425=for apidoc sv_reftype
5426
5427Returns a string describing what the SV is a reference to.
5428
5429=cut
5430*/
5431
7340a771 5432char *
864dbfa3 5433Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5434{
5435 if (ob && SvOBJECT(sv))
5436 return HvNAME(SvSTASH(sv));
5437 else {
5438 switch (SvTYPE(sv)) {
5439 case SVt_NULL:
5440 case SVt_IV:
5441 case SVt_NV:
5442 case SVt_RV:
5443 case SVt_PV:
5444 case SVt_PVIV:
5445 case SVt_PVNV:
5446 case SVt_PVMG:
5447 case SVt_PVBM:
5448 if (SvROK(sv))
5449 return "REF";
5450 else
5451 return "SCALAR";
5452 case SVt_PVLV: return "LVALUE";
5453 case SVt_PVAV: return "ARRAY";
5454 case SVt_PVHV: return "HASH";
5455 case SVt_PVCV: return "CODE";
5456 case SVt_PVGV: return "GLOB";
1d2dff63 5457 case SVt_PVFM: return "FORMAT";
27f9d8f3 5458 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5459 default: return "UNKNOWN";
5460 }
5461 }
5462}
5463
954c1994
GS		 5464/*
5465=for apidoc sv_isobject
5466
5467Returns a boolean indicating whether the SV is an RV pointing to a blessed
5468object. If the SV is not an RV, or if the object is not blessed, then this
5469will return false.
5470
5471=cut
5472*/
5473
463ee0b2 5474int
864dbfa3 5475Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5476{
68dc0745 5477 if (!sv)
5478 return 0;
5479 if (SvGMAGICAL(sv))
5480 mg_get(sv);
85e6fe83
LW		 5481 if (!SvROK(sv))
5482 return 0;
5483 sv = (SV*)SvRV(sv);
5484 if (!SvOBJECT(sv))
5485 return 0;
5486 return 1;
5487}
5488
954c1994
GS		 5489/*
5490=for apidoc sv_isa
5491
5492Returns a boolean indicating whether the SV is blessed into the specified
5493class. This does not check for subtypes; use C<sv_derived_from> to verify
5494an inheritance relationship.
5495
5496=cut
5497*/
5498
85e6fe83 5499int
864dbfa3 5500Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5501{
68dc0745 5502 if (!sv)
5503 return 0;
5504 if (SvGMAGICAL(sv))
5505 mg_get(sv);
ed6116ce 5506 if (!SvROK(sv))
463ee0b2 5507 return 0;
ed6116ce
LW		 5508 sv = (SV*)SvRV(sv);
5509 if (!SvOBJECT(sv))
463ee0b2
LW		 5510 return 0;
5511
5512 return strEQ(HvNAME(SvSTASH(sv)), name);
5513}
5514
954c1994
GS		 5515/*
5516=for apidoc newSVrv
5517
5518Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5519it will be upgraded to one. If C<classname> is non-null then the new SV will
5520be blessed in the specified package. The new SV is returned and its
5521reference count is 1.
5522
5523=cut
5524*/
5525
463ee0b2 5526SV*
864dbfa3 5527Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5528{
11343788 5529 dTHR;
463ee0b2
LW		 5530 SV *sv;
5531
4561caa4 5532 new_SV(sv);
51cf62d8 5533
2213622d 5534 SV_CHECK_THINKFIRST(rv);
51cf62d8 5535 SvAMAGIC_off(rv);
51cf62d8
OT		 5536
5537 if (SvTYPE(rv) < SVt_RV)
5538 sv_upgrade(rv, SVt_RV);
5539
5540 (void)SvOK_off(rv);
053fc874 5541 SvRV(rv) = sv;
ed6116ce 5542 SvROK_on(rv);
463ee0b2 5543
a0d0e21e
LW		 5544 if (classname) {
5545 HV* stash = gv_stashpv(classname, TRUE);
5546 (void)sv_bless(rv, stash);
5547 }
5548 return sv;
5549}
5550
954c1994
GS		 5551/*
5552=for apidoc sv_setref_pv
5553
5554Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5555argument will be upgraded to an RV. That RV will be modified to point to
5556the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5557into the SV. The C<classname> argument indicates the package for the
5558blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5559will be returned and will have a reference count of 1.
5560
5561Do not use with other Perl types such as HV, AV, SV, CV, because those
5562objects will become corrupted by the pointer copy process.
5563
5564Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5565
5566=cut
5567*/
5568
a0d0e21e 5569SV*
864dbfa3 5570Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5571{
189b2af5 5572 if (!pv) {
3280af22 5573 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5574 SvSETMAGIC(rv);
5575 }
a0d0e21e 5576 else
56431972 5577 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5578 return rv;
5579}
5580
954c1994
GS		 5581/*
5582=for apidoc sv_setref_iv
5583
5584Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5585argument will be upgraded to an RV. That RV will be modified to point to
5586the new SV. The C<classname> argument indicates the package for the
5587blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5588will be returned and will have a reference count of 1.
5589
5590=cut
5591*/
5592
a0d0e21e 5593SV*
864dbfa3 5594Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5595{
5596 sv_setiv(newSVrv(rv,classname), iv);
5597 return rv;
5598}
5599
954c1994
GS		 5600/*
5601=for apidoc sv_setref_nv
5602
5603Copies a double into a new SV, optionally blessing the SV. The C<rv>
5604argument will be upgraded to an RV. That RV will be modified to point to
5605the new SV. The C<classname> argument indicates the package for the
5606blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5607will be returned and will have a reference count of 1.
5608
5609=cut
5610*/
5611
a0d0e21e 5612SV*
65202027 5613Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5614{
5615 sv_setnv(newSVrv(rv,classname), nv);
5616 return rv;
5617}
463ee0b2 5618
954c1994
GS		 5619/*
5620=for apidoc sv_setref_pvn
5621
5622Copies a string into a new SV, optionally blessing the SV. The length of the
5623string must be specified with C<n>. The C<rv> argument will be upgraded to
5624an RV. That RV will be modified to point to the new SV. The C<classname>
5625argument indicates the package for the blessing. Set C<classname> to
5626C<Nullch> to avoid the blessing. The new SV will be returned and will have
5627a reference count of 1.
5628
5629Note that C<sv_setref_pv> copies the pointer while this copies the string.
5630
5631=cut
5632*/
5633
a0d0e21e 5634SV*
864dbfa3 5635Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5636{
5637 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5638 return rv;
5639}
5640
954c1994
GS		 5641/*
5642=for apidoc sv_bless
5643
5644Blesses an SV into a specified package. The SV must be an RV. The package
5645must be designated by its stash (see C<gv_stashpv()>). The reference count
5646of the SV is unaffected.
5647
5648=cut
5649*/
5650
a0d0e21e 5651SV*
864dbfa3 5652Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5653{
11343788 5654 dTHR;
76e3520e 5655 SV *tmpRef;
a0d0e21e 5656 if (!SvROK(sv))
cea2e8a9 5657 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5658 tmpRef = SvRV(sv);
5659 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5660 if (SvREADONLY(tmpRef))
cea2e8a9 5661 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5662 if (SvOBJECT(tmpRef)) {
5663 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5664 --PL_sv_objcount;
76e3520e 5665 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5666 }
a0d0e21e 5667 }
76e3520e
GS		 5668 SvOBJECT_on(tmpRef);
5669 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5670 ++PL_sv_objcount;
76e3520e
GS		 5671 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5672 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5673
2e3febc6
CS		 5674 if (Gv_AMG(stash))
5675 SvAMAGIC_on(sv);
5676 else
5677 SvAMAGIC_off(sv);
a0d0e21e
LW		 5678
5679 return sv;
5680}
5681
76e3520e 5682STATIC void
cea2e8a9 5683S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5684{
850fabdf
GS		 5685 void *xpvmg;
5686
a0d0e21e
LW		 5687 assert(SvTYPE(sv) == SVt_PVGV);
5688 SvFAKE_off(sv);
5689 if (GvGP(sv))
1edc1566 5690 gp_free((GV*)sv);
e826b3c7
GS		 5691 if (GvSTASH(sv)) {
5692 SvREFCNT_dec(GvSTASH(sv));
5693 GvSTASH(sv) = Nullhv;
5694 }
a0d0e21e
LW		 5695 sv_unmagic(sv, '*');
5696 Safefree(GvNAME(sv));
a5f75d66 5697 GvMULTI_off(sv);
850fabdf
GS		 5698
5699 /* need to keep SvANY(sv) in the right arena */
5700 xpvmg = new_XPVMG();
5701 StructCopy(SvANY(sv), xpvmg, XPVMG);
5702 del_XPVGV(SvANY(sv));
5703 SvANY(sv) = xpvmg;
5704
a0d0e21e
LW		 5705 SvFLAGS(sv) &= ~SVTYPEMASK;
5706 SvFLAGS(sv) |= SVt_PVMG;
5707}
5708
954c1994
GS		 5709/*
5710=for apidoc sv_unref
5711
5712Unsets the RV status of the SV, and decrements the reference count of
5713whatever was being referenced by the RV. This can almost be thought of
5714as a reversal of C<newSVrv>. See C<SvROK_off>.
5715
5716=cut
5717*/
5718
ed6116ce 5719void
864dbfa3 5720Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5721{
a0d0e21e 5722 SV* rv = SvRV(sv);
810b8aa5
GS		 5723
5724 if (SvWEAKREF(sv)) {
5725 sv_del_backref(sv);
5726 SvWEAKREF_off(sv);
5727 SvRV(sv) = 0;
5728 return;
5729 }
ed6116ce
LW		 5730 SvRV(sv) = 0;
5731 SvROK_off(sv);
4633a7c4
LW		 5732 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5733 SvREFCNT_dec(rv);
8e07c86e 5734 else
4633a7c4 5735 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5736}
8990e307 5737
bbce6d69 5738void
864dbfa3 5739Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5740{
5741 sv_magic((sv), Nullsv, 't', Nullch, 0);
5742}
5743
5744void
864dbfa3 5745Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5746{
13f57bf8 5747 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5748 MAGIC *mg = mg_find(sv, 't');
5749 if (mg)
565764a8 5750 mg->mg_len &= ~1;
36477c24 5751 }
bbce6d69 5752}
5753
5754bool
864dbfa3 5755Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5756{
13f57bf8 5757 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5758 MAGIC *mg = mg_find(sv, 't');
155aba94 5759 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5760 return TRUE;
5761 }
5762 return FALSE;
bbce6d69 5763}
5764
954c1994
GS		 5765/*
5766=for apidoc sv_setpviv
5767
5768Copies an integer into the given SV, also updating its string value.
5769Does not handle 'set' magic. See C<sv_setpviv_mg>.
5770
5771=cut
5772*/
5773
84902520 5774void
864dbfa3 5775Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5776{
25da4f38
IZ		 5777 char buf[TYPE_CHARS(UV)];
5778 char *ebuf;
5779 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5780
25da4f38 5781 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5782}
5783
ef50df4b 5784
954c1994
GS		 5785/*
5786=for apidoc sv_setpviv_mg
5787
5788Like C<sv_setpviv>, but also handles 'set' magic.
5789
5790=cut
5791*/
5792
ef50df4b 5793void
864dbfa3 5794Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5795{
25da4f38
IZ		 5796 char buf[TYPE_CHARS(UV)];
5797 char *ebuf;
5798 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5799
5800 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5801 SvSETMAGIC(sv);
5802}
5803
cea2e8a9
GS		 5804#if defined(PERL_IMPLICIT_CONTEXT)
5805void
5806Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5807{
5808 dTHX;
5809 va_list args;
5810 va_start(args, pat);
c5be433b 5811 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5812 va_end(args);
5813}
5814
5815
5816void
5817Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5818{
5819 dTHX;
5820 va_list args;
5821 va_start(args, pat);
c5be433b 5822 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5823 va_end(args);
cea2e8a9
GS		 5824}
5825#endif
5826
954c1994
GS		 5827/*
5828=for apidoc sv_setpvf
5829
5830Processes its arguments like C<sprintf> and sets an SV to the formatted
5831output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5832
5833=cut
5834*/
5835
46fc3d4c 5836void
864dbfa3 5837Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5838{
5839 va_list args;
46fc3d4c 5840 va_start(args, pat);
c5be433b 5841 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5842 va_end(args);
5843}
5844
c5be433b
GS		 5845void
5846Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5847{
5848 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5849}
ef50df4b 5850
954c1994
GS		 5851/*
5852=for apidoc sv_setpvf_mg
5853
5854Like C<sv_setpvf>, but also handles 'set' magic.
5855
5856=cut
5857*/
5858
ef50df4b 5859void
864dbfa3 5860Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5861{
5862 va_list args;
ef50df4b 5863 va_start(args, pat);
c5be433b 5864 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5865 va_end(args);
c5be433b
GS		 5866}
5867
5868void
5869Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5870{
5871 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5872 SvSETMAGIC(sv);
5873}
5874
cea2e8a9
GS		 5875#if defined(PERL_IMPLICIT_CONTEXT)
5876void
5877Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5878{
5879 dTHX;
5880 va_list args;
5881 va_start(args, pat);
c5be433b 5882 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5883 va_end(args);
5884}
5885
5886void
5887Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5888{
5889 dTHX;
5890 va_list args;
5891 va_start(args, pat);
c5be433b 5892 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5893 va_end(args);
cea2e8a9
GS		 5894}
5895#endif
5896
954c1994
GS		 5897/*
5898=for apidoc sv_catpvf
5899
5900Processes its arguments like C<sprintf> and appends the formatted output
5901to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5902typically be called after calling this function to handle 'set' magic.
5903
5904=cut
5905*/
5906
46fc3d4c 5907void
864dbfa3 5908Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5909{
5910 va_list args;
46fc3d4c 5911 va_start(args, pat);
c5be433b 5912 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5913 va_end(args);
5914}
5915
ef50df4b 5916void
c5be433b
GS		 5917Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5918{
5919 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5920}
5921
954c1994
GS		 5922/*
5923=for apidoc sv_catpvf_mg
5924
5925Like C<sv_catpvf>, but also handles 'set' magic.
5926
5927=cut
5928*/
5929
c5be433b 5930void
864dbfa3 5931Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5932{
5933 va_list args;
ef50df4b 5934 va_start(args, pat);
c5be433b 5935 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5936 va_end(args);
c5be433b
GS		 5937}
5938
5939void
5940Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5941{
5942 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5943 SvSETMAGIC(sv);
5944}
5945
954c1994
GS		 5946/*
5947=for apidoc sv_vsetpvfn
5948
5949Works like C<vcatpvfn> but copies the text into the SV instead of
5950appending it.
5951
5952=cut
5953*/
5954
46fc3d4c 5955void
7d5ea4e7 5956Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5957{
5958 sv_setpvn(sv, "", 0);
7d5ea4e7 5959 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5960}
5961
954c1994
GS		 5962/*
5963=for apidoc sv_vcatpvfn
5964
5965Processes its arguments like C<vsprintf> and appends the formatted output
5966to an SV. Uses an array of SVs if the C style variable argument list is
5967missing (NULL). When running with taint checks enabled, indicates via
5968C<maybe_tainted> if results are untrustworthy (often due to the use of
5969locales).
5970
5971=cut
5972*/
5973
46fc3d4c 5974void
7d5ea4e7 5975Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5976{
e858de61 5977 dTHR;
46fc3d4c 5978 char *p;
5979 char *q;
5980 char *patend;
fc36a67e 5981 STRLEN origlen;
46fc3d4c 5982 I32 svix = 0;
c635e13b 5983 static char nullstr[] = "(null)";
7e2040f0 5984 SV *argsv;
46fc3d4c 5985
5986 /* no matter what, this is a string now */
fc36a67e 5987 (void)SvPV_force(sv, origlen);
46fc3d4c 5988
fc36a67e 5989 /* special-case "", "%s", and "%_" */
46fc3d4c 5990 if (patlen == 0)
5991 return;
fc36a67e 5992 if (patlen == 2 && pat[0] == '%') {
5993 switch (pat[1]) {
5994 case 's':
c635e13b 5995 if (args) {
5996 char *s = va_arg(*args, char*);
5997 sv_catpv(sv, s ? s : nullstr);
5998 }
7e2040f0 5999 else if (svix < svmax) {
fc36a67e 6000 sv_catsv(sv, *svargs);
7e2040f0
GS		 6001 if (DO_UTF8(*svargs))
6002 SvUTF8_on(sv);
6003 }
fc36a67e 6004 return;
6005 case '_':
6006 if (args) {
7e2040f0
GS		 6007 argsv = va_arg(*args, SV*);
6008 sv_catsv(sv, argsv);
6009 if (DO_UTF8(argsv))
6010 SvUTF8_on(sv);
fc36a67e 6011 return;
6012 }
6013 /* See comment on '_' below */
6014 break;
6015 }
46fc3d4c 6016 }
6017
6018 patend = (char*)pat + patlen;
6019 for (p = (char*)pat; p < patend; p = q) {
6020 bool alt = FALSE;
6021 bool left = FALSE;
b22c7a20
GS		 6022 bool vectorize = FALSE;
6023 bool utf = FALSE;
46fc3d4c 6024 char fill = ' ';
6025 char plus = 0;
6026 char intsize = 0;
6027 STRLEN width = 0;
fc36a67e 6028 STRLEN zeros = 0;
46fc3d4c 6029 bool has_precis = FALSE;
6030 STRLEN precis = 0;
7e2040f0 6031 bool is_utf = FALSE;
46fc3d4c 6032
6033 char esignbuf[4];
806e7201 6034 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6035 STRLEN esignlen = 0;
6036
6037 char *eptr = Nullch;
fc36a67e 6038 STRLEN elen = 0;
089c015b
JH		 6039 /* Times 4: a decimal digit takes more than 3 binary digits.
6040 * NV_DIG: mantissa takes than many decimal digits.
6041 * Plus 32: Playing safe. */
6042 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6043 /* large enough for "%#.#f" --chip */
6044 /* what about long double NVs? --jhi */
b22c7a20
GS		 6045
6046 SV *vecsv;
a05b299f 6047 U8 *vecstr = Null(U8*);
b22c7a20 6048 STRLEN veclen = 0;
46fc3d4c 6049 char c;
6050 int i;
6051 unsigned base;
6052 IV iv;
6053 UV uv;
65202027 6054 NV nv;
46fc3d4c 6055 STRLEN have;
6056 STRLEN need;
6057 STRLEN gap;
b22c7a20
GS		 6058 char *dotstr = ".";
6059 STRLEN dotstrlen = 1;
46fc3d4c 6060
6061 for (q = p; q < patend && *q != '%'; ++q) ;
6062 if (q > p) {
6063 sv_catpvn(sv, p, q - p);
6064 p = q;
6065 }
6066 if (q++ >= patend)
6067 break;
6068
fc36a67e 6069 /* FLAGS */
6070
46fc3d4c 6071 while (*q) {
6072 switch (*q) {
6073 case ' ':
6074 case '+':
6075 plus = *q++;
6076 continue;
6077
6078 case '-':
6079 left = TRUE;
6080 q++;
6081 continue;
6082
6083 case '0':
6084 fill = *q++;
6085 continue;
6086
6087 case '#':
6088 alt = TRUE;
6089 q++;
6090 continue;
6091
b22c7a20
GS		 6092 case '*': /* printf("%*vX",":",$ipv6addr) */
6093 if (q[1] != 'v')
6094 break;
6095 q++;
6096 if (args)
6097 vecsv = va_arg(*args, SV*);
6098 else if (svix < svmax)
6099 vecsv = svargs[svix++];
9c3dd3fe
GS		 6100 else
6101 continue;
b22c7a20
GS		 6102 dotstr = SvPVx(vecsv,dotstrlen);
6103 if (DO_UTF8(vecsv))
6104 is_utf = TRUE;
6105 /* FALL THROUGH */
6106
6107 case 'v':
6108 vectorize = TRUE;
6109 q++;
b22c7a20
GS		 6110 continue;
6111
fc36a67e 6112 default:
6113 break;
6114 }
6115 break;
6116 }
46fc3d4c 6117
fc36a67e 6118 /* WIDTH */
6119
6120 switch (*q) {
6121 case '1': case '2': case '3':
6122 case '4': case '5': case '6':
6123 case '7': case '8': case '9':
6124 width = 0;
6125 while (isDIGIT(*q))
6126 width = width * 10 + (*q++ - '0');
6127 break;
6128
6129 case '*':
6130 if (args)
6131 i = va_arg(*args, int);
6132 else
6133 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6134 left |= (i < 0);
6135 width = (i < 0) ? -i : i;
6136 q++;
6137 break;
6138 }
6139
6140 /* PRECISION */
46fc3d4c 6141
fc36a67e 6142 if (*q == '.') {
6143 q++;
6144 if (*q == '*') {
46fc3d4c 6145 if (args)
6146 i = va_arg(*args, int);
6147 else
6148 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
fc36a67e 6149 precis = (i < 0) ? 0 : i;
46fc3d4c 6150 q++;
fc36a67e 6151 }
6152 else {
6153 precis = 0;
6154 while (isDIGIT(*q))
6155 precis = precis * 10 + (*q++ - '0');
6156 }
6157 has_precis = TRUE;
6158 }
46fc3d4c 6159
bb2899ba
GS		 6160 if (vectorize) {
6161 if (args) {
6162 vecsv = va_arg(*args, SV*);
6163 vecstr = (U8*)SvPVx(vecsv,veclen);
6164 utf = DO_UTF8(vecsv);
6165 }
6166 else if (svix < svmax) {
6167 vecsv = svargs[svix++];
6168 vecstr = (U8*)SvPVx(vecsv,veclen);
6169 utf = DO_UTF8(vecsv);
6170 }
6171 else {
6172 vecstr = (U8*)"";
6173 veclen = 0;
6174 }
6175 }
6176
fc36a67e 6177 /* SIZE */
46fc3d4c 6178
fc36a67e 6179 switch (*q) {
6f9bb7fd
GS		 6180#ifdef HAS_QUAD
6181 case 'L': /* Ld */
6182 case 'q': /* qd */
6183 intsize = 'q';
6184 q++;
6185 break;
6186#endif
fc36a67e 6187 case 'l':
cf2093f6
JH		 6188#ifdef HAS_QUAD
6189 if (*(q + 1) == 'l') { /* lld */
fc36a67e 6190 intsize = 'q';
6191 q += 2;
46fc3d4c 6192 break;
cf2093f6 6193 }
fc36a67e 6194#endif
6f9bb7fd 6195 /* FALL THROUGH */
fc36a67e 6196 case 'h':
cf2093f6 6197 /* FALL THROUGH */
fc36a67e 6198 case 'V':
6199 intsize = *q++;
46fc3d4c 6200 break;
6201 }
6202
fc36a67e 6203 /* CONVERSION */
6204
46fc3d4c 6205 switch (c = *q++) {
6206
6207 /* STRINGS */
6208
6209 case '%':
6210 eptr = q - 1;
6211 elen = 1;
6212 goto string;
6213
6214 case 'c':
7e2040f0
GS		 6215 if (args)
6216 uv = va_arg(*args, int);
6217 else
6218 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
3969a896 6219 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6220 eptr = (char*)utf8buf;
6221 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6222 is_utf = TRUE;
6223 }
6224 else {
6225 c = (char)uv;
6226 eptr = &c;
6227 elen = 1;
a0ed51b3 6228 }
46fc3d4c 6229 goto string;
6230
46fc3d4c 6231 case 's':
6232 if (args) {
fc36a67e 6233 eptr = va_arg(*args, char*);
c635e13b 6234 if (eptr)
1d7c1841
GS		 6235#ifdef MACOS_TRADITIONAL
6236 /* On MacOS, %#s format is used for Pascal strings */
6237 if (alt)
6238 elen = *eptr++;
6239 else
6240#endif
c635e13b 6241 elen = strlen(eptr);
6242 else {
6243 eptr = nullstr;
6244 elen = sizeof nullstr - 1;
6245 }
46fc3d4c 6246 }
a0ed51b3 6247 else if (svix < svmax) {
7e2040f0
GS		 6248 argsv = svargs[svix++];
6249 eptr = SvPVx(argsv, elen);
6250 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6251 if (has_precis && precis < elen) {
6252 I32 p = precis;
7e2040f0 6253 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6254 precis = p;
6255 }
6256 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6257 width += elen - sv_len_utf8(argsv);
a0ed51b3 6258 }
7e2040f0 6259 is_utf = TRUE;
a0ed51b3
LW		 6260 }
6261 }
46fc3d4c 6262 goto string;
6263
fc36a67e 6264 case '_':
6265 /*
6266 * The "%_" hack might have to be changed someday,
6267 * if ISO or ANSI decide to use '_' for something.
6268 * So we keep it hidden from users' code.
6269 */
6270 if (!args)
6271 goto unknown;
7e2040f0
GS		 6272 argsv = va_arg(*args,SV*);
6273 eptr = SvPVx(argsv, elen);
6274 if (DO_UTF8(argsv))
6275 is_utf = TRUE;
fc36a67e 6276
46fc3d4c 6277 string:
b22c7a20 6278 vectorize = FALSE;
46fc3d4c 6279 if (has_precis && elen > precis)
6280 elen = precis;
6281 break;
6282
6283 /* INTEGERS */
6284
fc36a67e 6285 case 'p':
c2e66d9e
GS		 6286 if (alt)
6287 goto unknown;
fc36a67e 6288 if (args)
56431972 6289 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6290 else
56431972 6291 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
fc36a67e 6292 base = 16;
6293 goto integer;
6294
46fc3d4c 6295 case 'D':
29fe7a80 6296#ifdef IV_IS_QUAD
22f3ae8c 6297 intsize = 'q';
29fe7a80 6298#else
46fc3d4c 6299 intsize = 'l';
29fe7a80 6300#endif
46fc3d4c 6301 /* FALL THROUGH */
6302 case 'd':
6303 case 'i':
b22c7a20
GS		 6304 if (vectorize) {
6305 I32 ulen;
6306 if (!veclen) {
6307 vectorize = FALSE;
6308 break;
6309 }
6310 if (utf)
6311 iv = (IV)utf8_to_uv(vecstr, &ulen);
6312 else {
a05b299f 6313 iv = *vecstr;
b22c7a20
GS		 6314 ulen = 1;
6315 }
6316 vecstr += ulen;
6317 veclen -= ulen;
6318 }
6319 else if (args) {
46fc3d4c 6320 switch (intsize) {
6321 case 'h': iv = (short)va_arg(*args, int); break;
6322 default: iv = va_arg(*args, int); break;
6323 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6324 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6325#ifdef HAS_QUAD
6326 case 'q': iv = va_arg(*args, Quad_t); break;
6327#endif
46fc3d4c 6328 }
6329 }
6330 else {
6331 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6332 switch (intsize) {
6333 case 'h': iv = (short)iv; break;
be28567c 6334 default: break;
46fc3d4c 6335 case 'l': iv = (long)iv; break;
fc36a67e 6336 case 'V': break;
cf2093f6
JH		 6337#ifdef HAS_QUAD
6338 case 'q': iv = (Quad_t)iv; break;
6339#endif
46fc3d4c 6340 }
6341 }
6342 if (iv >= 0) {
6343 uv = iv;
6344 if (plus)
6345 esignbuf[esignlen++] = plus;
6346 }
6347 else {
6348 uv = -iv;
6349 esignbuf[esignlen++] = '-';
6350 }
6351 base = 10;
6352 goto integer;
6353
fc36a67e 6354 case 'U':
29fe7a80 6355#ifdef IV_IS_QUAD
22f3ae8c 6356 intsize = 'q';
29fe7a80 6357#else
fc36a67e 6358 intsize = 'l';
29fe7a80 6359#endif
fc36a67e 6360 /* FALL THROUGH */
6361 case 'u':
6362 base = 10;
6363 goto uns_integer;
6364
4f19785b
WSI		 6365 case 'b':
6366 base = 2;
6367 goto uns_integer;
6368
46fc3d4c 6369 case 'O':
29fe7a80 6370#ifdef IV_IS_QUAD
22f3ae8c 6371 intsize = 'q';
29fe7a80 6372#else
46fc3d4c 6373 intsize = 'l';
29fe7a80 6374#endif
46fc3d4c 6375 /* FALL THROUGH */
6376 case 'o':
6377 base = 8;
6378 goto uns_integer;
6379
6380 case 'X':
46fc3d4c 6381 case 'x':
6382 base = 16;
46fc3d4c 6383
6384 uns_integer:
b22c7a20
GS		 6385 if (vectorize) {
6386 I32 ulen;
6387 vector:
6388 if (!veclen) {
6389 vectorize = FALSE;
6390 break;
6391 }
6392 if (utf)
6393 uv = utf8_to_uv(vecstr, &ulen);
6394 else {
a05b299f 6395 uv = *vecstr;
b22c7a20
GS		 6396 ulen = 1;
6397 }
6398 vecstr += ulen;
6399 veclen -= ulen;
6400 }
6401 else if (args) {
46fc3d4c 6402 switch (intsize) {
6403 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6404 default: uv = va_arg(*args, unsigned); break;
6405 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6406 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6407#ifdef HAS_QUAD
6408 case 'q': uv = va_arg(*args, Quad_t); break;
6409#endif
46fc3d4c 6410 }
6411 }
6412 else {
6413 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6414 switch (intsize) {
6415 case 'h': uv = (unsigned short)uv; break;
be28567c 6416 default: break;
46fc3d4c 6417 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6418 case 'V': break;
cf2093f6
JH		 6419#ifdef HAS_QUAD
6420 case 'q': uv = (Quad_t)uv; break;
6421#endif
46fc3d4c 6422 }
6423 }
6424
6425 integer:
46fc3d4c 6426 eptr = ebuf + sizeof ebuf;
fc36a67e 6427 switch (base) {
6428 unsigned dig;
6429 case 16:
c10ed8b9
HS		 6430 if (!uv)
6431 alt = FALSE;
1d7c1841
GS		 6432 p = (char*)((c == 'X')
6433 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6434 do {
6435 dig = uv & 15;
6436 *--eptr = p[dig];
6437 } while (uv >>= 4);
6438 if (alt) {
46fc3d4c 6439 esignbuf[esignlen++] = '0';
fc36a67e 6440 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6441 }
fc36a67e 6442 break;
6443 case 8:
6444 do {
6445 dig = uv & 7;
6446 *--eptr = '0' + dig;
6447 } while (uv >>= 3);
6448 if (alt && *eptr != '0')
6449 *--eptr = '0';
6450 break;
4f19785b
WSI		 6451 case 2:
6452 do {
6453 dig = uv & 1;
6454 *--eptr = '0' + dig;
6455 } while (uv >>= 1);
eda88b6d
JH		 6456 if (alt) {
6457 esignbuf[esignlen++] = '0';
7481bb52 6458 esignbuf[esignlen++] = 'b';
eda88b6d 6459 }
4f19785b 6460 break;
fc36a67e 6461 default: /* it had better be ten or less */
6bc102ca 6462#if defined(PERL_Y2KWARN)
e476b1b5 6463 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6464 STRLEN n;
6465 char *s = SvPV(sv,n);
6466 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6467 && (n == 2 || !isDIGIT(s[n-3])))
6468 {
e476b1b5 6469 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6470 "Possible Y2K bug: %%%c %s",
6471 c, "format string following '19'");
6472 }
6473 }
6474#endif
fc36a67e 6475 do {
6476 dig = uv % base;
6477 *--eptr = '0' + dig;
6478 } while (uv /= base);
6479 break;
46fc3d4c 6480 }
6481 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6482 if (has_precis) {
6483 if (precis > elen)
6484 zeros = precis - elen;
6485 else if (precis == 0 && elen == 1 && *eptr == '0')
6486 elen = 0;
6487 }
46fc3d4c 6488 break;
6489
6490 /* FLOATING POINT */
6491
fc36a67e 6492 case 'F':
6493 c = 'f'; /* maybe %F isn't supported here */
6494 /* FALL THROUGH */
46fc3d4c 6495 case 'e': case 'E':
fc36a67e 6496 case 'f':
46fc3d4c 6497 case 'g': case 'G':
6498
6499 /* This is evil, but floating point is even more evil */
6500
b22c7a20 6501 vectorize = FALSE;
fc36a67e 6502 if (args)
65202027 6503 nv = va_arg(*args, NV);
fc36a67e 6504 else
6505 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6506
6507 need = 0;
6508 if (c != 'e' && c != 'E') {
6509 i = PERL_INT_MIN;
73b309ea 6510 (void)Perl_frexp(nv, &i);
fc36a67e 6511 if (i == PERL_INT_MIN)
cea2e8a9 6512 Perl_die(aTHX_ "panic: frexp");
c635e13b 6513 if (i > 0)
fc36a67e 6514 need = BIT_DIGITS(i);
6515 }
6516 need += has_precis ? precis : 6; /* known default */
6517 if (need < width)
6518 need = width;
6519
46fc3d4c 6520 need += 20; /* fudge factor */
80252599
GS		 6521 if (PL_efloatsize < need) {
6522 Safefree(PL_efloatbuf);
6523 PL_efloatsize = need + 20; /* more fudge */
6524 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6525 PL_efloatbuf[0] = '\0';
46fc3d4c 6526 }
6527
6528 eptr = ebuf + sizeof ebuf;
6529 *--eptr = '\0';
6530 *--eptr = c;
65202027 6531#ifdef USE_LONG_DOUBLE
cf2093f6 6532 {
7a7a2329 6533 static char const my_prifldbl[] = PERL_PRIfldbl;
f320eb41
JH		 6534 char const *p = my_prifldbl + sizeof my_prifldbl - 3;
6535 while (p >= my_prifldbl) { *--eptr = *p--; }
cf2093f6 6536 }
65202027 6537#endif
46fc3d4c 6538 if (has_precis) {
6539 base = precis;
6540 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6541 *--eptr = '.';
6542 }
6543 if (width) {
6544 base = width;
6545 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6546 }
6547 if (fill == '0')
6548 *--eptr = fill;
84902520
TB		 6549 if (left)
6550 *--eptr = '-';
46fc3d4c 6551 if (plus)
6552 *--eptr = plus;
6553 if (alt)
6554 *--eptr = '#';
6555 *--eptr = '%';
6556
bf24ccfa 6557 {
f93f4e46 6558 STORE_NUMERIC_STANDARD_SET_LOCAL();
e54dc35b 6559#ifdef USE_LOCALE_NUMERIC
f93f4e46
CK		 6560 if (!was_standard && maybe_tainted)
6561 *maybe_tainted = TRUE;
e54dc35b 6562#endif
bf24ccfa 6563 (void)sprintf(PL_efloatbuf, eptr, nv);
f93f4e46 6564 RESTORE_NUMERIC_STANDARD();
bf24ccfa 6565 }
8af02333 6566
80252599
GS		 6567 eptr = PL_efloatbuf;
6568 elen = strlen(PL_efloatbuf);
46fc3d4c 6569 break;
6570
fc36a67e 6571 /* SPECIAL */
6572
6573 case 'n':
b22c7a20 6574 vectorize = FALSE;
fc36a67e 6575 i = SvCUR(sv) - origlen;
6576 if (args) {
c635e13b 6577 switch (intsize) {
6578 case 'h': *(va_arg(*args, short*)) = i; break;
6579 default: *(va_arg(*args, int*)) = i; break;
6580 case 'l': *(va_arg(*args, long*)) = i; break;
6581 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6582#ifdef HAS_QUAD
6583 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6584#endif
c635e13b 6585 }
fc36a67e 6586 }
6587 else if (svix < svmax)
c2e66d9e 6588 sv_setuv_mg(svargs[svix++], (UV)i);
fc36a67e 6589 continue; /* not "break" */
6590
6591 /* UNKNOWN */
6592
46fc3d4c 6593 default:
fc36a67e 6594 unknown:
b22c7a20 6595 vectorize = FALSE;
599cee73 6596 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6597 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6598 SV *msg = sv_newmortal();
cea2e8a9 6599 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6600 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6601 if (c) {
0f4b6630
JH		 6602 if (isPRINT(c))
6603 Perl_sv_catpvf(aTHX_ msg,
6604 "\"%%%c\"", c & 0xFF);
6605 else
6606 Perl_sv_catpvf(aTHX_ msg,
57def98f 6607 "\"%%\\%03"UVof"\"",
0f4b6630 6608 (UV)c & 0xFF);
0f4b6630 6609 } else
c635e13b 6610 sv_catpv(msg, "end of string");
894356b3 6611 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6612 }
fb73857a 6613
6614 /* output mangled stuff ... */
6615 if (c == '\0')
6616 --q;
46fc3d4c 6617 eptr = p;
6618 elen = q - p;
fb73857a 6619
6620 /* ... right here, because formatting flags should not apply */
6621 SvGROW(sv, SvCUR(sv) + elen + 1);
6622 p = SvEND(sv);
6623 memcpy(p, eptr, elen);
6624 p += elen;
6625 *p = '\0';
6626 SvCUR(sv) = p - SvPVX(sv);
6627 continue; /* not "break" */
46fc3d4c 6628 }
6629
fc36a67e 6630 have = esignlen + zeros + elen;
46fc3d4c 6631 need = (have > width ? have : width);
6632 gap = need - have;
6633
b22c7a20 6634 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6635 p = SvEND(sv);
6636 if (esignlen && fill == '0') {
6637 for (i = 0; i < esignlen; i++)
6638 *p++ = esignbuf[i];
6639 }
6640 if (gap && !left) {
6641 memset(p, fill, gap);
6642 p += gap;
6643 }
6644 if (esignlen && fill != '0') {
6645 for (i = 0; i < esignlen; i++)
6646 *p++ = esignbuf[i];
6647 }
fc36a67e 6648 if (zeros) {
6649 for (i = zeros; i; i--)
6650 *p++ = '0';
6651 }
46fc3d4c 6652 if (elen) {
6653 memcpy(p, eptr, elen);
6654 p += elen;
6655 }
6656 if (gap && left) {
6657 memset(p, ' ', gap);
6658 p += gap;
6659 }
b22c7a20
GS		 6660 if (vectorize) {
6661 if (veclen) {
6662 memcpy(p, dotstr, dotstrlen);
6663 p += dotstrlen;
6664 }
6665 else
6666 vectorize = FALSE; /* done iterating over vecstr */
6667 }
7e2040f0
GS		 6668 if (is_utf)
6669 SvUTF8_on(sv);
46fc3d4c 6670 *p = '\0';
6671 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6672 if (vectorize) {
6673 esignlen = 0;
6674 goto vector;
6675 }
46fc3d4c 6676 }
6677}
51371543 6678
1d7c1841
GS		 6679#if defined(USE_ITHREADS)
6680
6681#if defined(USE_THREADS)
6682# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6683#endif
6684
1d7c1841
GS		 6685#ifndef GpREFCNT_inc
6686# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6687#endif
6688
6689
6690#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6691#define av_dup(s) (AV*)sv_dup((SV*)s)
6692#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6693#define hv_dup(s) (HV*)sv_dup((SV*)s)
6694#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6695#define cv_dup(s) (CV*)sv_dup((SV*)s)
6696#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6697#define io_dup(s) (IO*)sv_dup((SV*)s)
6698#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6699#define gv_dup(s) (GV*)sv_dup((SV*)s)
6700#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6701#define SAVEPV(p) (p ? savepv(p) : Nullch)
6702#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6703
6704REGEXP *
6705Perl_re_dup(pTHX_ REGEXP *r)
6706{
6707 /* XXX fix when pmop->op_pmregexp becomes shared */
6708 return ReREFCNT_inc(r);
6709}
6710
6711PerlIO *
6712Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6713{
6714 PerlIO *ret;
6715 if (!fp)
6716 return (PerlIO*)NULL;
6717
6718 /* look for it in the table first */
6719 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6720 if (ret)
6721 return ret;
6722
6723 /* create anew and remember what it is */
6724 ret = PerlIO_fdupopen(fp);
6725 ptr_table_store(PL_ptr_table, fp, ret);
6726 return ret;
6727}
6728
6729DIR *
6730Perl_dirp_dup(pTHX_ DIR *dp)
6731{
6732 if (!dp)
6733 return (DIR*)NULL;
6734 /* XXX TODO */
6735 return dp;
6736}
6737
6738GP *
6739Perl_gp_dup(pTHX_ GP *gp)
6740{
6741 GP *ret;
6742 if (!gp)
6743 return (GP*)NULL;
6744 /* look for it in the table first */
6745 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6746 if (ret)
6747 return ret;
6748
6749 /* create anew and remember what it is */
6750 Newz(0, ret, 1, GP);
6751 ptr_table_store(PL_ptr_table, gp, ret);
6752
6753 /* clone */
6754 ret->gp_refcnt = 0; /* must be before any other dups! */
6755 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6756 ret->gp_io = io_dup_inc(gp->gp_io);
6757 ret->gp_form = cv_dup_inc(gp->gp_form);
6758 ret->gp_av = av_dup_inc(gp->gp_av);
6759 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6760 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6761 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6762 ret->gp_cvgen = gp->gp_cvgen;
6763 ret->gp_flags = gp->gp_flags;
6764 ret->gp_line = gp->gp_line;
6765 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6766 return ret;
6767}
6768
6769MAGIC *
6770Perl_mg_dup(pTHX_ MAGIC *mg)
6771{
6772 MAGIC *mgret = (MAGIC*)NULL;
6773 MAGIC *mgprev;
6774 if (!mg)
6775 return (MAGIC*)NULL;
6776 /* look for it in the table first */
6777 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6778 if (mgret)
6779 return mgret;
6780
6781 for (; mg; mg = mg->mg_moremagic) {
6782 MAGIC *nmg;
6783 Newz(0, nmg, 1, MAGIC);
6784 if (!mgret)
6785 mgret = nmg;
6786 else
6787 mgprev->mg_moremagic = nmg;
6788 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6789 nmg->mg_private = mg->mg_private;
6790 nmg->mg_type = mg->mg_type;
6791 nmg->mg_flags = mg->mg_flags;
6792 if (mg->mg_type == 'r') {
6793 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6794 }
6795 else {
6796 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6797 ? sv_dup_inc(mg->mg_obj)
6798 : sv_dup(mg->mg_obj);
6799 }
6800 nmg->mg_len = mg->mg_len;
6801 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6802 if (mg->mg_ptr && mg->mg_type != 'g') {
6803 if (mg->mg_len >= 0) {
6804 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6805 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6806 AMT *amtp = (AMT*)mg->mg_ptr;
6807 AMT *namtp = (AMT*)nmg->mg_ptr;
6808 I32 i;
6809 for (i = 1; i < NofAMmeth; i++) {
6810 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6811 }
6812 }
6813 }
6814 else if (mg->mg_len == HEf_SVKEY)
6815 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6816 }
6817 mgprev = nmg;
6818 }
6819 return mgret;
6820}
6821
6822PTR_TBL_t *
6823Perl_ptr_table_new(pTHX)
6824{
6825 PTR_TBL_t *tbl;
6826 Newz(0, tbl, 1, PTR_TBL_t);
6827 tbl->tbl_max = 511;
6828 tbl->tbl_items = 0;
6829 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6830 return tbl;
6831}
6832
6833void *
6834Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6835{
6836 PTR_TBL_ENT_t *tblent;
d2a79402 6837 UV hash = PTR2UV(sv);
1d7c1841
GS		 6838 assert(tbl);
6839 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6840 for (; tblent; tblent = tblent->next) {
6841 if (tblent->oldval == sv)
6842 return tblent->newval;
6843 }
6844 return (void*)NULL;
6845}
6846
6847void
6848Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6849{
6850 PTR_TBL_ENT_t *tblent, **otblent;
6851 /* XXX this may be pessimal on platforms where pointers aren't good
6852 * hash values e.g. if they grow faster in the most significant
6853 * bits */
d2a79402 6854 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6855 bool i = 1;
6856
6857 assert(tbl);
6858 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6859 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6860 if (tblent->oldval == oldv) {
6861 tblent->newval = newv;
6862 tbl->tbl_items++;
6863 return;
6864 }
6865 }
6866 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6867 tblent->oldval = oldv;
6868 tblent->newval = newv;
6869 tblent->next = *otblent;
6870 *otblent = tblent;
6871 tbl->tbl_items++;
6872 if (i && tbl->tbl_items > tbl->tbl_max)
6873 ptr_table_split(tbl);
6874}
6875
6876void
6877Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6878{
6879 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6880 UV oldsize = tbl->tbl_max + 1;
6881 UV newsize = oldsize * 2;
6882 UV i;
6883
6884 Renew(ary, newsize, PTR_TBL_ENT_t*);
6885 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6886 tbl->tbl_max = --newsize;
6887 tbl->tbl_ary = ary;
6888 for (i=0; i < oldsize; i++, ary++) {
6889 PTR_TBL_ENT_t **curentp, **entp, *ent;
6890 if (!*ary)
6891 continue;
6892 curentp = ary + oldsize;
6893 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6894 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6895 *entp = ent->next;
6896 ent->next = *curentp;
6897 *curentp = ent;
6898 continue;
6899 }
6900 else
6901 entp = &ent->next;
6902 }
6903 }
6904}
6905
6906#ifdef DEBUGGING
6907char *PL_watch_pvx;
6908#endif
6909
6910SV *
6911Perl_sv_dup(pTHX_ SV *sstr)
6912{
1d7c1841
GS		 6913 SV *dstr;
6914
6915 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6916 return Nullsv;
6917 /* look for it in the table first */
6918 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6919 if (dstr)
6920 return dstr;
6921
6922 /* create anew and remember what it is */
6923 new_SV(dstr);
6924 ptr_table_store(PL_ptr_table, sstr, dstr);
6925
6926 /* clone */
6927 SvFLAGS(dstr) = SvFLAGS(sstr);
6928 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6929 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6930
6931#ifdef DEBUGGING
6932 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6933 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6934 PL_watch_pvx, SvPVX(sstr));
6935#endif
6936
6937 switch (SvTYPE(sstr)) {
6938 case SVt_NULL:
6939 SvANY(dstr) = NULL;
6940 break;
6941 case SVt_IV:
6942 SvANY(dstr) = new_XIV();
6943 SvIVX(dstr) = SvIVX(sstr);
6944 break;
6945 case SVt_NV:
6946 SvANY(dstr) = new_XNV();
6947 SvNVX(dstr) = SvNVX(sstr);
6948 break;
6949 case SVt_RV:
6950 SvANY(dstr) = new_XRV();
6951 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6952 break;
6953 case SVt_PV:
6954 SvANY(dstr) = new_XPV();
6955 SvCUR(dstr) = SvCUR(sstr);
6956 SvLEN(dstr) = SvLEN(sstr);
6957 if (SvROK(sstr))
6958 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6959 else if (SvPVX(sstr) && SvLEN(sstr))
6960 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6961 else
6962 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6963 break;
6964 case SVt_PVIV:
6965 SvANY(dstr) = new_XPVIV();
6966 SvCUR(dstr) = SvCUR(sstr);
6967 SvLEN(dstr) = SvLEN(sstr);
6968 SvIVX(dstr) = SvIVX(sstr);
6969 if (SvROK(sstr))
6970 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6971 else if (SvPVX(sstr) && SvLEN(sstr))
6972 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6973 else
6974 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6975 break;
6976 case SVt_PVNV:
6977 SvANY(dstr) = new_XPVNV();
6978 SvCUR(dstr) = SvCUR(sstr);
6979 SvLEN(dstr) = SvLEN(sstr);
6980 SvIVX(dstr) = SvIVX(sstr);
6981 SvNVX(dstr) = SvNVX(sstr);
6982 if (SvROK(sstr))
6983 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6984 else if (SvPVX(sstr) && SvLEN(sstr))
6985 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6986 else
6987 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6988 break;
6989 case SVt_PVMG:
6990 SvANY(dstr) = new_XPVMG();
6991 SvCUR(dstr) = SvCUR(sstr);
6992 SvLEN(dstr) = SvLEN(sstr);
6993 SvIVX(dstr) = SvIVX(sstr);
6994 SvNVX(dstr) = SvNVX(sstr);
6995 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6996 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6997 if (SvROK(sstr))
6998 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6999 else if (SvPVX(sstr) && SvLEN(sstr))
7000 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7001 else
7002 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7003 break;
7004 case SVt_PVBM:
7005 SvANY(dstr) = new_XPVBM();
7006 SvCUR(dstr) = SvCUR(sstr);
7007 SvLEN(dstr) = SvLEN(sstr);
7008 SvIVX(dstr) = SvIVX(sstr);
7009 SvNVX(dstr) = SvNVX(sstr);
7010 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7011 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7012 if (SvROK(sstr))
7013 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7014 else if (SvPVX(sstr) && SvLEN(sstr))
7015 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7016 else
7017 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7018 BmRARE(dstr) = BmRARE(sstr);
7019 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7020 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7021 break;
7022 case SVt_PVLV:
7023 SvANY(dstr) = new_XPVLV();
7024 SvCUR(dstr) = SvCUR(sstr);
7025 SvLEN(dstr) = SvLEN(sstr);
7026 SvIVX(dstr) = SvIVX(sstr);
7027 SvNVX(dstr) = SvNVX(sstr);
7028 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7029 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7030 if (SvROK(sstr))
7031 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7032 else if (SvPVX(sstr) && SvLEN(sstr))
7033 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7034 else
7035 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7036 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7037 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7038 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7039 LvTYPE(dstr) = LvTYPE(sstr);
7040 break;
7041 case SVt_PVGV:
7042 SvANY(dstr) = new_XPVGV();
7043 SvCUR(dstr) = SvCUR(sstr);
7044 SvLEN(dstr) = SvLEN(sstr);
7045 SvIVX(dstr) = SvIVX(sstr);
7046 SvNVX(dstr) = SvNVX(sstr);
7047 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7048 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7049 if (SvROK(sstr))
7050 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7051 else if (SvPVX(sstr) && SvLEN(sstr))
7052 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7053 else
7054 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7055 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7056 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7057 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7058 GvFLAGS(dstr) = GvFLAGS(sstr);
7059 GvGP(dstr) = gp_dup(GvGP(sstr));
7060 (void)GpREFCNT_inc(GvGP(dstr));
7061 break;
7062 case SVt_PVIO:
7063 SvANY(dstr) = new_XPVIO();
7064 SvCUR(dstr) = SvCUR(sstr);
7065 SvLEN(dstr) = SvLEN(sstr);
7066 SvIVX(dstr) = SvIVX(sstr);
7067 SvNVX(dstr) = SvNVX(sstr);
7068 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7069 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7070 if (SvROK(sstr))
7071 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7072 else if (SvPVX(sstr) && SvLEN(sstr))
7073 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7074 else
7075 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7076 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7077 if (IoOFP(sstr) == IoIFP(sstr))
7078 IoOFP(dstr) = IoIFP(dstr);
7079 else
7080 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7081 /* PL_rsfp_filters entries have fake IoDIRP() */
7082 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7083 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7084 else
7085 IoDIRP(dstr) = IoDIRP(sstr);
7086 IoLINES(dstr) = IoLINES(sstr);
7087 IoPAGE(dstr) = IoPAGE(sstr);
7088 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7089 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7090 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7091 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7092 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7093 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7094 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7095 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7096 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7097 IoTYPE(dstr) = IoTYPE(sstr);
7098 IoFLAGS(dstr) = IoFLAGS(sstr);
7099 break;
7100 case SVt_PVAV:
7101 SvANY(dstr) = new_XPVAV();
7102 SvCUR(dstr) = SvCUR(sstr);
7103 SvLEN(dstr) = SvLEN(sstr);
7104 SvIVX(dstr) = SvIVX(sstr);
7105 SvNVX(dstr) = SvNVX(sstr);
7106 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7107 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7108 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7109 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7110 if (AvARRAY((AV*)sstr)) {
7111 SV **dst_ary, **src_ary;
7112 SSize_t items = AvFILLp((AV*)sstr) + 1;
7113
7114 src_ary = AvARRAY((AV*)sstr);
7115 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7116 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7117 SvPVX(dstr) = (char*)dst_ary;
7118 AvALLOC((AV*)dstr) = dst_ary;
7119 if (AvREAL((AV*)sstr)) {
7120 while (items-- > 0)
7121 *dst_ary++ = sv_dup_inc(*src_ary++);
7122 }
7123 else {
7124 while (items-- > 0)
7125 *dst_ary++ = sv_dup(*src_ary++);
7126 }
7127 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7128 while (items-- > 0) {
7129 *dst_ary++ = &PL_sv_undef;
7130 }
7131 }
7132 else {
7133 SvPVX(dstr) = Nullch;
7134 AvALLOC((AV*)dstr) = (SV**)NULL;
7135 }
7136 break;
7137 case SVt_PVHV:
7138 SvANY(dstr) = new_XPVHV();
7139 SvCUR(dstr) = SvCUR(sstr);
7140 SvLEN(dstr) = SvLEN(sstr);
7141 SvIVX(dstr) = SvIVX(sstr);
7142 SvNVX(dstr) = SvNVX(sstr);
7143 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7144 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7145 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7146 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7147 STRLEN i = 0;
7148 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7149 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7150 Newz(0, dxhv->xhv_array,
7151 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7152 while (i <= sxhv->xhv_max) {
7153 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7154 !!HvSHAREKEYS(sstr));
7155 ++i;
7156 }
7157 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7158 }
7159 else {
7160 SvPVX(dstr) = Nullch;
7161 HvEITER((HV*)dstr) = (HE*)NULL;
7162 }
7163 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7164 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7165 break;
7166 case SVt_PVFM:
7167 SvANY(dstr) = new_XPVFM();
7168 FmLINES(dstr) = FmLINES(sstr);
7169 goto dup_pvcv;
7170 /* NOTREACHED */
7171 case SVt_PVCV:
7172 SvANY(dstr) = new_XPVCV();
7173dup_pvcv:
7174 SvCUR(dstr) = SvCUR(sstr);
7175 SvLEN(dstr) = SvLEN(sstr);
7176 SvIVX(dstr) = SvIVX(sstr);
7177 SvNVX(dstr) = SvNVX(sstr);
7178 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7179 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7180 if (SvPVX(sstr) && SvLEN(sstr))
7181 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7182 else
7183 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7184 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7185 CvSTART(dstr) = CvSTART(sstr);
7186 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7187 CvXSUB(dstr) = CvXSUB(sstr);
7188 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7189 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7190 CvDEPTH(dstr) = CvDEPTH(sstr);
7191 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7192 /* XXX padlists are real, but pretend to be not */
7193 AvREAL_on(CvPADLIST(sstr));
7194 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7195 AvREAL_off(CvPADLIST(sstr));
7196 AvREAL_off(CvPADLIST(dstr));
7197 }
7198 else
7199 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7200 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7201 CvFLAGS(dstr) = CvFLAGS(sstr);
7202 break;
7203 default:
7204 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7205 break;
7206 }
7207
7208 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7209 ++PL_sv_objcount;
7210
7211 return dstr;
7212}
7213
7214PERL_CONTEXT *
7215Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7216{
7217 PERL_CONTEXT *ncxs;
7218
7219 if (!cxs)
7220 return (PERL_CONTEXT*)NULL;
7221
7222 /* look for it in the table first */
7223 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7224 if (ncxs)
7225 return ncxs;
7226
7227 /* create anew and remember what it is */
7228 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7229 ptr_table_store(PL_ptr_table, cxs, ncxs);
7230
7231 while (ix >= 0) {
7232 PERL_CONTEXT *cx = &cxs[ix];
7233 PERL_CONTEXT *ncx = &ncxs[ix];
7234 ncx->cx_type = cx->cx_type;
7235 if (CxTYPE(cx) == CXt_SUBST) {
7236 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7237 }
7238 else {
7239 ncx->blk_oldsp = cx->blk_oldsp;
7240 ncx->blk_oldcop = cx->blk_oldcop;
7241 ncx->blk_oldretsp = cx->blk_oldretsp;
7242 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7243 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7244 ncx->blk_oldpm = cx->blk_oldpm;
7245 ncx->blk_gimme = cx->blk_gimme;
7246 switch (CxTYPE(cx)) {
7247 case CXt_SUB:
7248 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7249 ? cv_dup_inc(cx->blk_sub.cv)
7250 : cv_dup(cx->blk_sub.cv));
7251 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7252 ? av_dup_inc(cx->blk_sub.argarray)
7253 : Nullav);
7254 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7255 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7256 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7257 ncx->blk_sub.lval = cx->blk_sub.lval;
7258 break;
7259 case CXt_EVAL:
7260 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7261 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7262 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7263 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7264 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7265 break;
7266 case CXt_LOOP:
7267 ncx->blk_loop.label = cx->blk_loop.label;
7268 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7269 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7270 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7271 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7272 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7273 ? cx->blk_loop.iterdata
7274 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7275 ncx->blk_loop.oldcurpad
7276 = (SV**)ptr_table_fetch(PL_ptr_table,
7277 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7278 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7279 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7280 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7281 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7282 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7283 break;
7284 case CXt_FORMAT:
7285 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7286 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7287 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7288 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7289 break;
7290 case CXt_BLOCK:
7291 case CXt_NULL:
7292 break;
7293 }
7294 }
7295 --ix;
7296 }
7297 return ncxs;
7298}
7299
7300PERL_SI *
7301Perl_si_dup(pTHX_ PERL_SI *si)
7302{
7303 PERL_SI *nsi;
7304
7305 if (!si)
7306 return (PERL_SI*)NULL;
7307
7308 /* look for it in the table first */
7309 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7310 if (nsi)
7311 return nsi;
7312
7313 /* create anew and remember what it is */
7314 Newz(56, nsi, 1, PERL_SI);
7315 ptr_table_store(PL_ptr_table, si, nsi);
7316
7317 nsi->si_stack = av_dup_inc(si->si_stack);
7318 nsi->si_cxix = si->si_cxix;
7319 nsi->si_cxmax = si->si_cxmax;
7320 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7321 nsi->si_type = si->si_type;
7322 nsi->si_prev = si_dup(si->si_prev);
7323 nsi->si_next = si_dup(si->si_next);
7324 nsi->si_markoff = si->si_markoff;
7325
7326 return nsi;
7327}
7328
7329#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7330#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7331#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7332#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7333#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7334#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7335#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7336#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7337#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7338#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7339#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7340#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7341
7342/* XXXXX todo */
7343#define pv_dup_inc(p) SAVEPV(p)
7344#define pv_dup(p) SAVEPV(p)
7345#define svp_dup_inc(p,pp) any_dup(p,pp)
7346
7347void *
7348Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7349{
7350 void *ret;
7351
7352 if (!v)
7353 return (void*)NULL;
7354
7355 /* look for it in the table first */
7356 ret = ptr_table_fetch(PL_ptr_table, v);
7357 if (ret)
7358 return ret;
7359
7360 /* see if it is part of the interpreter structure */
7361 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7362 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7363 else
7364 ret = v;
7365
7366 return ret;
7367}
7368
7369ANY *
7370Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7371{
7372 ANY *ss = proto_perl->Tsavestack;
7373 I32 ix = proto_perl->Tsavestack_ix;
7374 I32 max = proto_perl->Tsavestack_max;
7375 ANY *nss;
7376 SV *sv;
7377 GV *gv;
7378 AV *av;
7379 HV *hv;
7380 void* ptr;
7381 int intval;
7382 long longval;
7383 GP *gp;
7384 IV iv;
7385 I32 i;
7386 char *c;
7387 void (*dptr) (void*);
7388 void (*dxptr) (pTHXo_ void*);
e977893f 7389 OP *o;
1d7c1841
GS		 7390
7391 Newz(54, nss, max, ANY);
7392
7393 while (ix > 0) {
7394 i = POPINT(ss,ix);
7395 TOPINT(nss,ix) = i;
7396 switch (i) {
7397 case SAVEt_ITEM: /* normal string */
7398 sv = (SV*)POPPTR(ss,ix);
7399 TOPPTR(nss,ix) = sv_dup_inc(sv);
7400 sv = (SV*)POPPTR(ss,ix);
7401 TOPPTR(nss,ix) = sv_dup_inc(sv);
7402 break;
7403 case SAVEt_SV: /* scalar reference */
7404 sv = (SV*)POPPTR(ss,ix);
7405 TOPPTR(nss,ix) = sv_dup_inc(sv);
7406 gv = (GV*)POPPTR(ss,ix);
7407 TOPPTR(nss,ix) = gv_dup_inc(gv);
7408 break;
f4dd75d9
GS		 7409 case SAVEt_GENERIC_PVREF: /* generic char* */
7410 c = (char*)POPPTR(ss,ix);
7411 TOPPTR(nss,ix) = pv_dup(c);
7412 ptr = POPPTR(ss,ix);
7413 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7414 break;
1d7c1841
GS		 7415 case SAVEt_GENERIC_SVREF: /* generic sv */
7416 case SAVEt_SVREF: /* scalar reference */
7417 sv = (SV*)POPPTR(ss,ix);
7418 TOPPTR(nss,ix) = sv_dup_inc(sv);
7419 ptr = POPPTR(ss,ix);
7420 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7421 break;
7422 case SAVEt_AV: /* array reference */
7423 av = (AV*)POPPTR(ss,ix);
7424 TOPPTR(nss,ix) = av_dup_inc(av);
7425 gv = (GV*)POPPTR(ss,ix);
7426 TOPPTR(nss,ix) = gv_dup(gv);
7427 break;
7428 case SAVEt_HV: /* hash reference */
7429 hv = (HV*)POPPTR(ss,ix);
7430 TOPPTR(nss,ix) = hv_dup_inc(hv);
7431 gv = (GV*)POPPTR(ss,ix);
7432 TOPPTR(nss,ix) = gv_dup(gv);
7433 break;
7434 case SAVEt_INT: /* int reference */
7435 ptr = POPPTR(ss,ix);
7436 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7437 intval = (int)POPINT(ss,ix);
7438 TOPINT(nss,ix) = intval;
7439 break;
7440 case SAVEt_LONG: /* long reference */
7441 ptr = POPPTR(ss,ix);
7442 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7443 longval = (long)POPLONG(ss,ix);
7444 TOPLONG(nss,ix) = longval;
7445 break;
7446 case SAVEt_I32: /* I32 reference */
7447 case SAVEt_I16: /* I16 reference */
7448 case SAVEt_I8: /* I8 reference */
7449 ptr = POPPTR(ss,ix);
7450 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7451 i = POPINT(ss,ix);
7452 TOPINT(nss,ix) = i;
7453 break;
7454 case SAVEt_IV: /* IV reference */
7455 ptr = POPPTR(ss,ix);
7456 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7457 iv = POPIV(ss,ix);
7458 TOPIV(nss,ix) = iv;
7459 break;
7460 case SAVEt_SPTR: /* SV* reference */
7461 ptr = POPPTR(ss,ix);
7462 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7463 sv = (SV*)POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = sv_dup(sv);
7465 break;
7466 case SAVEt_VPTR: /* random* reference */
7467 ptr = POPPTR(ss,ix);
7468 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7469 ptr = POPPTR(ss,ix);
7470 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7471 break;
7472 case SAVEt_PPTR: /* char* reference */
7473 ptr = POPPTR(ss,ix);
7474 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7475 c = (char*)POPPTR(ss,ix);
7476 TOPPTR(nss,ix) = pv_dup(c);
7477 break;
7478 case SAVEt_HPTR: /* HV* reference */
7479 ptr = POPPTR(ss,ix);
7480 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7481 hv = (HV*)POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = hv_dup(hv);
7483 break;
7484 case SAVEt_APTR: /* AV* reference */
7485 ptr = POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7487 av = (AV*)POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = av_dup(av);
7489 break;
7490 case SAVEt_NSTAB:
7491 gv = (GV*)POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = gv_dup(gv);
7493 break;
7494 case SAVEt_GP: /* scalar reference */
7495 gp = (GP*)POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = gp = gp_dup(gp);
7497 (void)GpREFCNT_inc(gp);
7498 gv = (GV*)POPPTR(ss,ix);
7499 TOPPTR(nss,ix) = gv_dup_inc(c);
7500 c = (char*)POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = pv_dup(c);
7502 iv = POPIV(ss,ix);
7503 TOPIV(nss,ix) = iv;
7504 iv = POPIV(ss,ix);
7505 TOPIV(nss,ix) = iv;
7506 break;
7507 case SAVEt_FREESV:
7508 sv = (SV*)POPPTR(ss,ix);
7509 TOPPTR(nss,ix) = sv_dup_inc(sv);
7510 break;
7511 case SAVEt_FREEOP:
7512 ptr = POPPTR(ss,ix);
7513 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7514 /* these are assumed to be refcounted properly */
7515 switch (((OP*)ptr)->op_type) {
7516 case OP_LEAVESUB:
7517 case OP_LEAVESUBLV:
7518 case OP_LEAVEEVAL:
7519 case OP_LEAVE:
7520 case OP_SCOPE:
7521 case OP_LEAVEWRITE:
e977893f
GS		 7522 TOPPTR(nss,ix) = ptr;
7523 o = (OP*)ptr;
7524 OpREFCNT_inc(o);
1d7c1841
GS		 7525 break;
7526 default:
7527 TOPPTR(nss,ix) = Nullop;
7528 break;
7529 }
7530 }
7531 else
7532 TOPPTR(nss,ix) = Nullop;
7533 break;
7534 case SAVEt_FREEPV:
7535 c = (char*)POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = pv_dup_inc(c);
7537 break;
7538 case SAVEt_CLEARSV:
7539 longval = POPLONG(ss,ix);
7540 TOPLONG(nss,ix) = longval;
7541 break;
7542 case SAVEt_DELETE:
7543 hv = (HV*)POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = hv_dup_inc(hv);
7545 c = (char*)POPPTR(ss,ix);
7546 TOPPTR(nss,ix) = pv_dup_inc(c);
7547 i = POPINT(ss,ix);
7548 TOPINT(nss,ix) = i;
7549 break;
7550 case SAVEt_DESTRUCTOR:
7551 ptr = POPPTR(ss,ix);
7552 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7553 dptr = POPDPTR(ss,ix);
ef75a179 7554 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7555 break;
7556 case SAVEt_DESTRUCTOR_X:
7557 ptr = POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7559 dxptr = POPDXPTR(ss,ix);
ef75a179 7560 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7561 break;
7562 case SAVEt_REGCONTEXT:
7563 case SAVEt_ALLOC:
7564 i = POPINT(ss,ix);
7565 TOPINT(nss,ix) = i;
7566 ix -= i;
7567 break;
7568 case SAVEt_STACK_POS: /* Position on Perl stack */
7569 i = POPINT(ss,ix);
7570 TOPINT(nss,ix) = i;
7571 break;
7572 case SAVEt_AELEM: /* array element */
7573 sv = (SV*)POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = sv_dup_inc(sv);
7575 i = POPINT(ss,ix);
7576 TOPINT(nss,ix) = i;
7577 av = (AV*)POPPTR(ss,ix);
7578 TOPPTR(nss,ix) = av_dup_inc(av);
7579 break;
7580 case SAVEt_HELEM: /* hash element */
7581 sv = (SV*)POPPTR(ss,ix);
7582 TOPPTR(nss,ix) = sv_dup_inc(sv);
7583 sv = (SV*)POPPTR(ss,ix);
7584 TOPPTR(nss,ix) = sv_dup_inc(sv);
7585 hv = (HV*)POPPTR(ss,ix);
7586 TOPPTR(nss,ix) = hv_dup_inc(hv);
7587 break;
7588 case SAVEt_OP:
7589 ptr = POPPTR(ss,ix);
7590 TOPPTR(nss,ix) = ptr;
7591 break;
7592 case SAVEt_HINTS:
7593 i = POPINT(ss,ix);
7594 TOPINT(nss,ix) = i;
7595 break;
c4410b1b
GS		 7596 case SAVEt_COMPPAD:
7597 av = (AV*)POPPTR(ss,ix);
7598 TOPPTR(nss,ix) = av_dup(av);
7599 break;
1d7c1841
GS		 7600 default:
7601 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7602 }
7603 }
7604
7605 return nss;
7606}
7607
7608#ifdef PERL_OBJECT
7609#include "XSUB.h"
7610#endif
7611
7612PerlInterpreter *
7613perl_clone(PerlInterpreter *proto_perl, UV flags)
7614{
7615#ifdef PERL_OBJECT
7616 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7617#endif
7618
7619#ifdef PERL_IMPLICIT_SYS
7620 return perl_clone_using(proto_perl, flags,
7621 proto_perl->IMem,
7622 proto_perl->IMemShared,
7623 proto_perl->IMemParse,
7624 proto_perl->IEnv,
7625 proto_perl->IStdIO,
7626 proto_perl->ILIO,
7627 proto_perl->IDir,
7628 proto_perl->ISock,
7629 proto_perl->IProc);
7630}
7631
7632PerlInterpreter *
7633perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7634 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7635 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7636 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7637 struct IPerlDir* ipD, struct IPerlSock* ipS,
7638 struct IPerlProc* ipP)
7639{
7640 /* XXX many of the string copies here can be optimized if they're
7641 * constants; they need to be allocated as common memory and just
7642 * their pointers copied. */
7643
7644 IV i;
1d7c1841
GS		 7645# ifdef PERL_OBJECT
7646 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7647 ipD, ipS, ipP);
ba869deb 7648 PERL_SET_THX(pPerl);
1d7c1841
GS		 7649# else /* !PERL_OBJECT */
7650 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7651 PERL_SET_THX(my_perl);
1d7c1841
GS		 7652
7653# ifdef DEBUGGING
7654 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7655 PL_markstack = 0;
7656 PL_scopestack = 0;
7657 PL_savestack = 0;
7658 PL_retstack = 0;
7659# else /* !DEBUGGING */
7660 Zero(my_perl, 1, PerlInterpreter);
7661# endif /* DEBUGGING */
7662
7663 /* host pointers */
7664 PL_Mem = ipM;
7665 PL_MemShared = ipMS;
7666 PL_MemParse = ipMP;
7667 PL_Env = ipE;
7668 PL_StdIO = ipStd;
7669 PL_LIO = ipLIO;
7670 PL_Dir = ipD;
7671 PL_Sock = ipS;
7672 PL_Proc = ipP;
7673# endif /* PERL_OBJECT */
7674#else /* !PERL_IMPLICIT_SYS */
7675 IV i;
1d7c1841 7676 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7677 PERL_SET_THX(my_perl);
1d7c1841
GS		 7678
7679# ifdef DEBUGGING
7680 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7681 PL_markstack = 0;
7682 PL_scopestack = 0;
7683 PL_savestack = 0;
7684 PL_retstack = 0;
7685# else /* !DEBUGGING */
7686 Zero(my_perl, 1, PerlInterpreter);
7687# endif /* DEBUGGING */
7688#endif /* PERL_IMPLICIT_SYS */
7689
7690 /* arena roots */
7691 PL_xiv_arenaroot = NULL;
7692 PL_xiv_root = NULL;
612f20c3 7693 PL_xnv_arenaroot = NULL;
1d7c1841 7694 PL_xnv_root = NULL;
612f20c3 7695 PL_xrv_arenaroot = NULL;
1d7c1841 7696 PL_xrv_root = NULL;
612f20c3 7697 PL_xpv_arenaroot = NULL;
1d7c1841 7698 PL_xpv_root = NULL;
612f20c3 7699 PL_xpviv_arenaroot = NULL;
1d7c1841 7700 PL_xpviv_root = NULL;
612f20c3 7701 PL_xpvnv_arenaroot = NULL;
1d7c1841 7702 PL_xpvnv_root = NULL;
612f20c3 7703 PL_xpvcv_arenaroot = NULL;
1d7c1841 7704 PL_xpvcv_root = NULL;
612f20c3 7705 PL_xpvav_arenaroot = NULL;
1d7c1841 7706 PL_xpvav_root = NULL;
612f20c3 7707 PL_xpvhv_arenaroot = NULL;
1d7c1841 7708 PL_xpvhv_root = NULL;
612f20c3 7709 PL_xpvmg_arenaroot = NULL;
1d7c1841 7710 PL_xpvmg_root = NULL;
612f20c3 7711 PL_xpvlv_arenaroot = NULL;
1d7c1841 7712 PL_xpvlv_root = NULL;
612f20c3 7713 PL_xpvbm_arenaroot = NULL;
1d7c1841 7714 PL_xpvbm_root = NULL;
612f20c3 7715 PL_he_arenaroot = NULL;
1d7c1841
GS		 7716 PL_he_root = NULL;
7717 PL_nice_chunk = NULL;
7718 PL_nice_chunk_size = 0;
7719 PL_sv_count = 0;
7720 PL_sv_objcount = 0;
7721 PL_sv_root = Nullsv;
7722 PL_sv_arenaroot = Nullsv;
7723
7724 PL_debug = proto_perl->Idebug;
7725
7726 /* create SV map for pointer relocation */
7727 PL_ptr_table = ptr_table_new();
7728
7729 /* initialize these special pointers as early as possible */
7730 SvANY(&PL_sv_undef) = NULL;
7731 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7732 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7733 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7734
7735#ifdef PERL_OBJECT
7736 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7737#else
7738 SvANY(&PL_sv_no) = new_XPVNV();
7739#endif
7740 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7741 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7742 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7743 SvCUR(&PL_sv_no) = 0;
7744 SvLEN(&PL_sv_no) = 1;
7745 SvNVX(&PL_sv_no) = 0;
7746 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7747
7748#ifdef PERL_OBJECT
7749 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7750#else
7751 SvANY(&PL_sv_yes) = new_XPVNV();
7752#endif
7753 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7754 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7755 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7756 SvCUR(&PL_sv_yes) = 1;
7757 SvLEN(&PL_sv_yes) = 2;
7758 SvNVX(&PL_sv_yes) = 1;
7759 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7760
7761 /* create shared string table */
7762 PL_strtab = newHV();
7763 HvSHAREKEYS_off(PL_strtab);
7764 hv_ksplit(PL_strtab, 512);
7765 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7766
7767 PL_compiling = proto_perl->Icompiling;
7768 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7769 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7770 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7771 if (!specialWARN(PL_compiling.cop_warnings))
7772 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7773 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7774
7775 /* pseudo environmental stuff */
7776 PL_origargc = proto_perl->Iorigargc;
7777 i = PL_origargc;
7778 New(0, PL_origargv, i+1, char*);
7779 PL_origargv[i] = '\0';
7780 while (i-- > 0) {
7781 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7782 }
7783 PL_envgv = gv_dup(proto_perl->Ienvgv);
7784 PL_incgv = gv_dup(proto_perl->Iincgv);
7785 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7786 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7787 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7788 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7789
7790 /* switches */
7791 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7792 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7793 PL_localpatches = proto_perl->Ilocalpatches;
7794 PL_splitstr = proto_perl->Isplitstr;
7795 PL_preprocess = proto_perl->Ipreprocess;
7796 PL_minus_n = proto_perl->Iminus_n;
7797 PL_minus_p = proto_perl->Iminus_p;
7798 PL_minus_l = proto_perl->Iminus_l;
7799 PL_minus_a = proto_perl->Iminus_a;
7800 PL_minus_F = proto_perl->Iminus_F;
7801 PL_doswitches = proto_perl->Idoswitches;
7802 PL_dowarn = proto_perl->Idowarn;
7803 PL_doextract = proto_perl->Idoextract;
7804 PL_sawampersand = proto_perl->Isawampersand;
7805 PL_unsafe = proto_perl->Iunsafe;
7806 PL_inplace = SAVEPV(proto_perl->Iinplace);
7807 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7808 PL_perldb = proto_perl->Iperldb;
7809 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7810
7811 /* magical thingies */
7812 /* XXX time(&PL_basetime) when asked for? */
7813 PL_basetime = proto_perl->Ibasetime;
7814 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7815
7816 PL_maxsysfd = proto_perl->Imaxsysfd;
7817 PL_multiline = proto_perl->Imultiline;
7818 PL_statusvalue = proto_perl->Istatusvalue;
7819#ifdef VMS
7820 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7821#endif
7822
7823 /* shortcuts to various I/O objects */
7824 PL_stdingv = gv_dup(proto_perl->Istdingv);
7825 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7826 PL_defgv = gv_dup(proto_perl->Idefgv);
7827 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7828 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7829 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7830
7831 /* shortcuts to regexp stuff */
7832 PL_replgv = gv_dup(proto_perl->Ireplgv);
7833
7834 /* shortcuts to misc objects */
7835 PL_errgv = gv_dup(proto_perl->Ierrgv);
7836
7837 /* shortcuts to debugging objects */
7838 PL_DBgv = gv_dup(proto_perl->IDBgv);
7839 PL_DBline = gv_dup(proto_perl->IDBline);
7840 PL_DBsub = gv_dup(proto_perl->IDBsub);
7841 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7842 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7843 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7844 PL_lineary = av_dup(proto_perl->Ilineary);
7845 PL_dbargs = av_dup(proto_perl->Idbargs);
7846
7847 /* symbol tables */
7848 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7849 PL_curstash = hv_dup(proto_perl->Tcurstash);
7850 PL_debstash = hv_dup(proto_perl->Idebstash);
7851 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7852 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7853
7854 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7855 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7856 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7857 PL_initav = av_dup_inc(proto_perl->Iinitav);
7858
7859 PL_sub_generation = proto_perl->Isub_generation;
7860
7861 /* funky return mechanisms */
7862 PL_forkprocess = proto_perl->Iforkprocess;
7863
7864 /* subprocess state */
7865 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7866
7867 /* internal state */
7868 PL_tainting = proto_perl->Itainting;
7869 PL_maxo = proto_perl->Imaxo;
7870 if (proto_perl->Iop_mask)
7871 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7872 else
7873 PL_op_mask = Nullch;
7874
7875 /* current interpreter roots */
7876 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7877 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7878 PL_main_start = proto_perl->Imain_start;
e977893f 7879 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7880 PL_eval_start = proto_perl->Ieval_start;
7881
7882 /* runtime control stuff */
7883 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7884 PL_copline = proto_perl->Icopline;
7885
7886 PL_filemode = proto_perl->Ifilemode;
7887 PL_lastfd = proto_perl->Ilastfd;
7888 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7889 PL_Argv = NULL;
7890 PL_Cmd = Nullch;
7891 PL_gensym = proto_perl->Igensym;
7892 PL_preambled = proto_perl->Ipreambled;
7893 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7894 PL_laststatval = proto_perl->Ilaststatval;
7895 PL_laststype = proto_perl->Ilaststype;
7896 PL_mess_sv = Nullsv;
7897
7898 PL_orslen = proto_perl->Iorslen;
7899 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7900 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7901
7902 /* interpreter atexit processing */
7903 PL_exitlistlen = proto_perl->Iexitlistlen;
7904 if (PL_exitlistlen) {
7905 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7906 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7907 }
7908 else
7909 PL_exitlist = (PerlExitListEntry*)NULL;
7910 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7911
7912 PL_profiledata = NULL;
7913 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7914 /* PL_rsfp_filters entries have fake IoDIRP() */
7915 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7916
7917 PL_compcv = cv_dup(proto_perl->Icompcv);
7918 PL_comppad = av_dup(proto_perl->Icomppad);
7919 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7920 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7921 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7922 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7923 proto_perl->Tcurpad);
7924
7925#ifdef HAVE_INTERP_INTERN
7926 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7927#endif
7928
7929 /* more statics moved here */
7930 PL_generation = proto_perl->Igeneration;
7931 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 7932
7933 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7934 PL_in_clean_all = proto_perl->Iin_clean_all;
7935
7936 PL_uid = proto_perl->Iuid;
7937 PL_euid = proto_perl->Ieuid;
7938 PL_gid = proto_perl->Igid;
7939 PL_egid = proto_perl->Iegid;
7940 PL_nomemok = proto_perl->Inomemok;
7941 PL_an = proto_perl->Ian;
7942 PL_cop_seqmax = proto_perl->Icop_seqmax;
7943 PL_op_seqmax = proto_perl->Iop_seqmax;
7944 PL_evalseq = proto_perl->Ievalseq;
7945 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7946 PL_origalen = proto_perl->Iorigalen;
7947 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7948 PL_osname = SAVEPV(proto_perl->Iosname);
7949 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7950 PL_sighandlerp = proto_perl->Isighandlerp;
7951
7952
7953 PL_runops = proto_perl->Irunops;
7954
7955 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7956
7957#ifdef CSH
7958 PL_cshlen = proto_perl->Icshlen;
7959 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7960#endif
7961
7962 PL_lex_state = proto_perl->Ilex_state;
7963 PL_lex_defer = proto_perl->Ilex_defer;
7964 PL_lex_expect = proto_perl->Ilex_expect;
7965 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7966 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7967 PL_lex_starts = proto_perl->Ilex_starts;
7968 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7969 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7970 PL_lex_op = proto_perl->Ilex_op;
7971 PL_lex_inpat = proto_perl->Ilex_inpat;
7972 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7973 PL_lex_brackets = proto_perl->Ilex_brackets;
7974 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7975 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7976 PL_lex_casemods = proto_perl->Ilex_casemods;
7977 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7978 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7979
7980 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7981 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7982 PL_nexttoke = proto_perl->Inexttoke;
7983
7984 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
7985 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
7986 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7987 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
7988 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7989 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
7990 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7991 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
7992 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
7993 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7994 PL_pending_ident = proto_perl->Ipending_ident;
7995 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
7996
7997 PL_expect = proto_perl->Iexpect;
7998
7999 PL_multi_start = proto_perl->Imulti_start;
8000 PL_multi_end = proto_perl->Imulti_end;
8001 PL_multi_open = proto_perl->Imulti_open;
8002 PL_multi_close = proto_perl->Imulti_close;
8003
8004 PL_error_count = proto_perl->Ierror_count;
8005 PL_subline = proto_perl->Isubline;
8006 PL_subname = sv_dup_inc(proto_perl->Isubname);
8007
8008 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8009 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8010 PL_padix = proto_perl->Ipadix;
8011 PL_padix_floor = proto_perl->Ipadix_floor;
8012 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8013
8014 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8015 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8016 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8017 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8018 PL_last_lop_op = proto_perl->Ilast_lop_op;
8019 PL_in_my = proto_perl->Iin_my;
8020 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8021#ifdef FCRYPT
8022 PL_cryptseen = proto_perl->Icryptseen;
8023#endif
8024
8025 PL_hints = proto_perl->Ihints;
8026
8027 PL_amagic_generation = proto_perl->Iamagic_generation;
8028
8029#ifdef USE_LOCALE_COLLATE
8030 PL_collation_ix = proto_perl->Icollation_ix;
8031 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8032 PL_collation_standard = proto_perl->Icollation_standard;
8033 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8034 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8035#endif /* USE_LOCALE_COLLATE */
8036
8037#ifdef USE_LOCALE_NUMERIC
8038 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8039 PL_numeric_standard = proto_perl->Inumeric_standard;
8040 PL_numeric_local = proto_perl->Inumeric_local;
8041 PL_numeric_radix = proto_perl->Inumeric_radix;
8042#endif /* !USE_LOCALE_NUMERIC */
8043
8044 /* utf8 character classes */
8045 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8046 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8047 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8048 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8049 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8050 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8051 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8052 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8053 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8054 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8055 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8056 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8057 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8058 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8059 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8060 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8061 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8062
8063 /* swatch cache */
8064 PL_last_swash_hv = Nullhv; /* reinits on demand */
8065 PL_last_swash_klen = 0;
8066 PL_last_swash_key[0]= '\0';
8067 PL_last_swash_tmps = (U8*)NULL;
8068 PL_last_swash_slen = 0;
8069
8070 /* perly.c globals */
8071 PL_yydebug = proto_perl->Iyydebug;
8072 PL_yynerrs = proto_perl->Iyynerrs;
8073 PL_yyerrflag = proto_perl->Iyyerrflag;
8074 PL_yychar = proto_perl->Iyychar;
8075 PL_yyval = proto_perl->Iyyval;
8076 PL_yylval = proto_perl->Iyylval;
8077
8078 PL_glob_index = proto_perl->Iglob_index;
8079 PL_srand_called = proto_perl->Isrand_called;
8080 PL_uudmap['M'] = 0; /* reinits on demand */
8081 PL_bitcount = Nullch; /* reinits on demand */
8082
8083 if (proto_perl->Ipsig_ptr) {
8084 int sig_num[] = { SIG_NUM };
8085 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8086 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8087 for (i = 1; PL_sig_name[i]; i++) {
8088 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8089 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8090 }
8091 }
8092 else {
8093 PL_psig_ptr = (SV**)NULL;
8094 PL_psig_name = (SV**)NULL;
8095 }
8096
8097 /* thrdvar.h stuff */
8098
8099 if (flags & 1) {
8100 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8101 PL_tmps_ix = proto_perl->Ttmps_ix;
8102 PL_tmps_max = proto_perl->Ttmps_max;
8103 PL_tmps_floor = proto_perl->Ttmps_floor;
8104 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8105 i = 0;
8106 while (i <= PL_tmps_ix) {
8107 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8108 ++i;
8109 }
8110
8111 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8112 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8113 Newz(54, PL_markstack, i, I32);
8114 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8115 - proto_perl->Tmarkstack);
8116 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8117 - proto_perl->Tmarkstack);
8118 Copy(proto_perl->Tmarkstack, PL_markstack,
8119 PL_markstack_ptr - PL_markstack + 1, I32);
8120
8121 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8122 * NOTE: unlike the others! */
8123 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8124 PL_scopestack_max = proto_perl->Tscopestack_max;
8125 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8126 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8127
8128 /* next push_return() sets PL_retstack[PL_retstack_ix]
8129 * NOTE: unlike the others! */
8130 PL_retstack_ix = proto_perl->Tretstack_ix;
8131 PL_retstack_max = proto_perl->Tretstack_max;
8132 Newz(54, PL_retstack, PL_retstack_max, OP*);
8133 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8134
8135 /* NOTE: si_dup() looks at PL_markstack */
8136 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8137
8138 /* PL_curstack = PL_curstackinfo->si_stack; */
8139 PL_curstack = av_dup(proto_perl->Tcurstack);
8140 PL_mainstack = av_dup(proto_perl->Tmainstack);
8141
8142 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8143 PL_stack_base = AvARRAY(PL_curstack);
8144 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8145 - proto_perl->Tstack_base);
8146 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8147
8148 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8149 * NOTE: unlike the others! */
8150 PL_savestack_ix = proto_perl->Tsavestack_ix;
8151 PL_savestack_max = proto_perl->Tsavestack_max;
8152 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8153 PL_savestack = ss_dup(proto_perl);
8154 }
8155 else {
8156 init_stacks();
985e7056 8157 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8158 }
8159
8160 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8161 PL_top_env = &PL_start_env;
8162
8163 PL_op = proto_perl->Top;
8164
8165 PL_Sv = Nullsv;
8166 PL_Xpv = (XPV*)NULL;
8167 PL_na = proto_perl->Tna;
8168
8169 PL_statbuf = proto_perl->Tstatbuf;
8170 PL_statcache = proto_perl->Tstatcache;
8171 PL_statgv = gv_dup(proto_perl->Tstatgv);
8172 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8173#ifdef HAS_TIMES
8174 PL_timesbuf = proto_perl->Ttimesbuf;
8175#endif
8176
8177 PL_tainted = proto_perl->Ttainted;
8178 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8179 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8180 PL_rs = sv_dup_inc(proto_perl->Trs);
8181 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8182 PL_ofslen = proto_perl->Tofslen;
8183 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8184 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8185 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8186 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8187 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8188 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8189
8190 PL_restartop = proto_perl->Trestartop;
8191 PL_in_eval = proto_perl->Tin_eval;
8192 PL_delaymagic = proto_perl->Tdelaymagic;
8193 PL_dirty = proto_perl->Tdirty;
8194 PL_localizing = proto_perl->Tlocalizing;
8195
14dd3ad8 8196#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8197 PL_protect = proto_perl->Tprotect;
14dd3ad8 8198#endif
1d7c1841
GS		 8199 PL_errors = sv_dup_inc(proto_perl->Terrors);
8200 PL_av_fetch_sv = Nullsv;
8201 PL_hv_fetch_sv = Nullsv;
8202 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8203 PL_modcount = proto_perl->Tmodcount;
8204 PL_lastgotoprobe = Nullop;
8205 PL_dumpindent = proto_perl->Tdumpindent;
8206
8207 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8208 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8209 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8210 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8211 PL_sortcxix = proto_perl->Tsortcxix;
8212 PL_efloatbuf = Nullch; /* reinits on demand */
8213 PL_efloatsize = 0; /* reinits on demand */
8214
8215 /* regex stuff */
8216
8217 PL_screamfirst = NULL;
8218 PL_screamnext = NULL;
8219 PL_maxscream = -1; /* reinits on demand */
8220 PL_lastscream = Nullsv;
8221
8222 PL_watchaddr = NULL;
8223 PL_watchok = Nullch;
8224
8225 PL_regdummy = proto_perl->Tregdummy;
8226 PL_regcomp_parse = Nullch;
8227 PL_regxend = Nullch;
8228 PL_regcode = (regnode*)NULL;
8229 PL_regnaughty = 0;
8230 PL_regsawback = 0;
8231 PL_regprecomp = Nullch;
8232 PL_regnpar = 0;
8233 PL_regsize = 0;
8234 PL_regflags = 0;
8235 PL_regseen = 0;
8236 PL_seen_zerolen = 0;
8237 PL_seen_evals = 0;
8238 PL_regcomp_rx = (regexp*)NULL;
8239 PL_extralen = 0;
8240 PL_colorset = 0; /* reinits PL_colors[] */
8241 /*PL_colors[6] = {0,0,0,0,0,0};*/
8242 PL_reg_whilem_seen = 0;
8243 PL_reginput = Nullch;
8244 PL_regbol = Nullch;
8245 PL_regeol = Nullch;
8246 PL_regstartp = (I32*)NULL;
8247 PL_regendp = (I32*)NULL;
8248 PL_reglastparen = (U32*)NULL;
8249 PL_regtill = Nullch;
8250 PL_regprev = '\n';
8251 PL_reg_start_tmp = (char**)NULL;
8252 PL_reg_start_tmpl = 0;
8253 PL_regdata = (struct reg_data*)NULL;
8254 PL_bostr = Nullch;
8255 PL_reg_flags = 0;
8256 PL_reg_eval_set = 0;
8257 PL_regnarrate = 0;
8258 PL_regprogram = (regnode*)NULL;
8259 PL_regindent = 0;
8260 PL_regcc = (CURCUR*)NULL;
8261 PL_reg_call_cc = (struct re_cc_state*)NULL;
8262 PL_reg_re = (regexp*)NULL;
8263 PL_reg_ganch = Nullch;
8264 PL_reg_sv = Nullsv;
8265 PL_reg_magic = (MAGIC*)NULL;
8266 PL_reg_oldpos = 0;
8267 PL_reg_oldcurpm = (PMOP*)NULL;
8268 PL_reg_curpm = (PMOP*)NULL;
8269 PL_reg_oldsaved = Nullch;
8270 PL_reg_oldsavedlen = 0;
8271 PL_reg_maxiter = 0;
8272 PL_reg_leftiter = 0;
8273 PL_reg_poscache = Nullch;
8274 PL_reg_poscache_size= 0;
8275
8276 /* RE engine - function pointers */
8277 PL_regcompp = proto_perl->Tregcompp;
8278 PL_regexecp = proto_perl->Tregexecp;
8279 PL_regint_start = proto_perl->Tregint_start;
8280 PL_regint_string = proto_perl->Tregint_string;
8281 PL_regfree = proto_perl->Tregfree;
8282
8283 PL_reginterp_cnt = 0;
8284 PL_reg_starttry = 0;
8285
8286#ifdef PERL_OBJECT
8287 return (PerlInterpreter*)pPerl;
8288#else
8289 return my_perl;
8290#endif
8291}
8292
8293#else /* !USE_ITHREADS */
51371543
GS		 8294
8295#ifdef PERL_OBJECT
51371543
GS		 8296#include "XSUB.h"
8297#endif
8298
1d7c1841
GS		 8299#endif /* USE_ITHREADS */
8300
51371543
GS		 8301static void
8302do_report_used(pTHXo_ SV *sv)
8303{
8304 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8305 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8306 sv_dump(sv);
8307 }
8308}
8309
8310static void
8311do_clean_objs(pTHXo_ SV *sv)
8312{
8313 SV* rv;
8314
8315 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8316 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8317 SvROK_off(sv);
8318 SvRV(sv) = 0;
8319 SvREFCNT_dec(rv);
8320 }
8321
8322 /* XXX Might want to check arrays, etc. */
8323}
8324
8325#ifndef DISABLE_DESTRUCTOR_KLUDGE
8326static void
8327do_clean_named_objs(pTHXo_ SV *sv)
8328{
f472eb5c 8329 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8330 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8331 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8332 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8333 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8334 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8335 {
8336 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8337 SvREFCNT_dec(sv);
8338 }
8339 }
8340}
8341#endif
8342
8343static void
8344do_clean_all(pTHXo_ SV *sv)
8345{
1d7c1841 8346 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8347 SvFLAGS(sv) |= SVf_BREAK;
8348 SvREFCNT_dec(sv);
8349}
8af02333 8350
Unnamed repository; edit this file 'description' to name the repository.