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warn is a macro, avoid using at a variable to avoid warnings
[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 }
1572 else if (numtype) {
1573 /* The NV may be reconstructed from IV - safe to cache IV,
1574 which may be calculated by atol(). */
1575 if (SvTYPE(sv) == SVt_PV)
1576 sv_upgrade(sv, SVt_PVIV);
1577 (void)SvIOK_on(sv);
cf2093f6 1578 SvIVX(sv) = Atol(SvPVX(sv));
25da4f38
IZ		 1579 }
1580 else { /* Not a number. Cache 0. */
1581 dTHR;
1582
1583 if (SvTYPE(sv) < SVt_PVIV)
1584 sv_upgrade(sv, SVt_PVIV);
25da4f38 1585 (void)SvIOK_on(sv);
7b9e3c00 1586 SvIVX(sv) = 0;
25da4f38
IZ		 1587 if (ckWARN(WARN_NUMERIC))
1588 not_a_number(sv);
1589 }
93a17b20 1590 }
79072805 1591 else {
11343788 1592 dTHR;
599cee73 1593 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1594 report_uninit();
25da4f38
IZ		 1595 if (SvTYPE(sv) < SVt_IV)
1596 /* Typically the caller expects that sv_any is not NULL now. */
1597 sv_upgrade(sv, SVt_IV);
a0d0e21e 1598 return 0;
79072805 1599 }
1d7c1841
GS		 1600 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1601 PTR2UV(sv),SvIVX(sv)));
25da4f38 1602 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1603}
1604
ff68c719 1605UV
864dbfa3 1606Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1607{
1608 if (!sv)
1609 return 0;
1610 if (SvGMAGICAL(sv)) {
1611 mg_get(sv);
1612 if (SvIOKp(sv))
1613 return SvUVX(sv);
1614 if (SvNOKp(sv))
1615 return U_V(SvNVX(sv));
36477c24 1616 if (SvPOKp(sv) && SvLEN(sv))
1617 return asUV(sv);
3fe9a6f1 1618 if (!SvROK(sv)) {
d008e5eb 1619 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1620 dTHR;
d008e5eb 1621 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1622 report_uninit();
c6ee37c5 1623 }
36477c24 1624 return 0;
3fe9a6f1 1625 }
ff68c719 1626 }
1627 if (SvTHINKFIRST(sv)) {
1628 if (SvROK(sv)) {
ff68c719 1629 SV* tmpstr;
1630 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
9e7bc3e8 1631 return SvUV(tmpstr);
56431972 1632 return PTR2UV(SvRV(sv));
ff68c719 1633 }
0336b60e
IZ		 1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1635 dTHR;
1636 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1637 report_uninit();
ff68c719 1638 return 0;
1639 }
1640 }
25da4f38
IZ		 1641 if (SvIOKp(sv)) {
1642 if (SvIsUV(sv)) {
1643 return SvUVX(sv);
1644 }
1645 else {
1646 return (UV)SvIVX(sv);
1647 }
ff68c719 1648 }
1649 if (SvNOKp(sv)) {
25da4f38
IZ		 1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1652 * NV over IV/UV.
25da4f38
IZ		 1653 */
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
ff68c719 1656 (void)SvIOK_on(sv);
25da4f38
IZ		 1657 if (SvNVX(sv) >= -0.5) {
1658 SvIsUV_on(sv);
1659 SvUVX(sv) = U_V(SvNVX(sv));
1660 }
1661 else {
1662 SvIVX(sv) = I_V(SvNVX(sv));
1663 ret_zero:
cf2093f6 1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
07270b1a 1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
57def98f
JH		 1666 PTR2UV(sv),
1667 SvIVX(sv),
1668 (IV)(UV)SvIVX(sv)));
25da4f38
IZ		 1669 return (UV)SvIVX(sv);
1670 }
ff68c719 1671 }
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1673 I32 numtype = looks_like_number(sv);
1674
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1678
1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1682 */
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
65202027 1686 NV d;
25da4f38 1687
cf2093f6 1688 d = Atof(SvPVX(sv));
25da4f38
IZ		 1689
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1692 SvNVX(sv) = d;
1693 (void)SvNOK_on(sv);
1694 (void)SvIOK_on(sv);
65202027 1695#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
65202027 1699#else
1d7c1841
GS		 1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
65202027 1703#endif
25da4f38
IZ		 1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1706 goto ret_zero;
1707 } else {
1708 SvUVX(sv) = U_V(SvNVX(sv));
1709 SvIsUV_on(sv);
1710 }
1711 }
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIOK_on(sv);
cf2093f6 1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
25da4f38
IZ		 1719 }
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1725 (void)SvIOK_on(sv);
1726 (void)SvIsUV_on(sv);
1727#ifdef HAS_STRTOUL
cf2093f6 1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
25da4f38
IZ		 1729#else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
cf2093f6 1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
25da4f38
IZ		 1732#endif
1733 }
1734 else { /* Not a number. Cache 0. */
1735 dTHR;
1736
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
25da4f38
IZ		 1739 (void)SvIOK_on(sv);
1740 (void)SvIsUV_on(sv);
7b9e3c00
GS		 1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
25da4f38
IZ		 1743 if (ckWARN(WARN_NUMERIC))
1744 not_a_number(sv);
1745 }
ff68c719 1746 }
1747 else {
d008e5eb 1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1749 dTHR;
d008e5eb 1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1751 report_uninit();
c6ee37c5 1752 }
25da4f38
IZ		 1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
ff68c719 1756 return 0;
1757 }
25da4f38 1758
1d7c1841
GS		 1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
25da4f38 1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 1762}
1763
65202027 1764NV
864dbfa3 1765Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 1766{
1767 if (!sv)
1768 return 0.0;
8990e307 1769 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1770 mg_get(sv);
1771 if (SvNOKp(sv))
1772 return SvNVX(sv);
a0d0e21e 1773 if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1774 dTHR;
599cee73 1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1776 not_a_number(sv);
097ee67d 1777 return Atof(SvPVX(sv));
a0d0e21e 1778 }
25da4f38
IZ		 1779 if (SvIOKp(sv)) {
1780 if (SvIsUV(sv))
65202027 1781 return (NV)SvUVX(sv);
25da4f38 1782 else
65202027 1783 return (NV)SvIVX(sv);
25da4f38 1784 }
16d20bd9 1785 if (!SvROK(sv)) {
d008e5eb 1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1787 dTHR;
d008e5eb 1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1789 report_uninit();
c6ee37c5 1790 }
16d20bd9
AD		 1791 return 0;
1792 }
463ee0b2 1793 }
ed6116ce 1794 if (SvTHINKFIRST(sv)) {
a0d0e21e 1795 if (SvROK(sv)) {
a0d0e21e
LW		 1796 SV* tmpstr;
1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
9e7bc3e8 1798 return SvNV(tmpstr);
56431972 1799 return PTR2NV(SvRV(sv));
a0d0e21e 1800 }
0336b60e 1801 if (SvREADONLY(sv) && !SvOK(sv)) {
d008e5eb 1802 dTHR;
599cee73 1803 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1804 report_uninit();
ed6116ce
LW		 1805 return 0.0;
1806 }
79072805
LW		 1807 }
1808 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 1809 if (SvTYPE(sv) == SVt_IV)
1810 sv_upgrade(sv, SVt_PVNV);
1811 else
1812 sv_upgrade(sv, SVt_NV);
572bbb43 1813#if defined(USE_LONG_DOUBLE)
097ee67d
JH		 1814 DEBUG_c({
1815 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1816 PerlIO_printf(Perl_debug_log,
1817 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1818 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1819 RESTORE_NUMERIC_LOCAL();
1820 });
65202027 1821#else
572bbb43
GS		 1822 DEBUG_c({
1823 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1824 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1825 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1826 RESTORE_NUMERIC_LOCAL();
1827 });
572bbb43 1828#endif
79072805
LW		 1829 }
1830 else if (SvTYPE(sv) < SVt_PVNV)
1831 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 1832 if (SvIOKp(sv) &&
1833 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 1834 {
65202027 1835 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
93a17b20 1836 }
748a9306 1837 else if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1838 dTHR;
599cee73 1839 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1840 not_a_number(sv);
097ee67d 1841 SvNVX(sv) = Atof(SvPVX(sv));
93a17b20 1842 }
79072805 1843 else {
11343788 1844 dTHR;
599cee73 1845 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1846 report_uninit();
25da4f38
IZ		 1847 if (SvTYPE(sv) < SVt_NV)
1848 /* Typically the caller expects that sv_any is not NULL now. */
1849 sv_upgrade(sv, SVt_NV);
a0d0e21e 1850 return 0.0;
79072805
LW		 1851 }
1852 SvNOK_on(sv);
572bbb43 1853#if defined(USE_LONG_DOUBLE)
097ee67d
JH		 1854 DEBUG_c({
1855 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1856 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1857 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1858 RESTORE_NUMERIC_LOCAL();
1859 });
65202027 1860#else
572bbb43
GS		 1861 DEBUG_c({
1862 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1863 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1864 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1865 RESTORE_NUMERIC_LOCAL();
1866 });
572bbb43 1867#endif
463ee0b2 1868 return SvNVX(sv);
79072805
LW		 1869}
1870
76e3520e 1871STATIC IV
cea2e8a9 1872S_asIV(pTHX_ SV *sv)
36477c24 1873{
1874 I32 numtype = looks_like_number(sv);
65202027 1875 NV d;
36477c24 1876
25da4f38 1877 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1878 return Atol(SvPVX(sv));
d008e5eb
GS		 1879 if (!numtype) {
1880 dTHR;
1881 if (ckWARN(WARN_NUMERIC))
1882 not_a_number(sv);
1883 }
097ee67d 1884 d = Atof(SvPVX(sv));
25da4f38 1885 return I_V(d);
36477c24 1886}
1887
76e3520e 1888STATIC UV
cea2e8a9 1889S_asUV(pTHX_ SV *sv)
36477c24 1890{
1891 I32 numtype = looks_like_number(sv);
1892
84902520 1893#ifdef HAS_STRTOUL
25da4f38 1894 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1895 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 1896#endif
d008e5eb
GS		 1897 if (!numtype) {
1898 dTHR;
1899 if (ckWARN(WARN_NUMERIC))
1900 not_a_number(sv);
1901 }
097ee67d 1902 return U_V(Atof(SvPVX(sv)));
36477c24 1903}
1904
25da4f38
IZ		 1905/*
1906 * Returns a combination of (advisory only - can get false negatives)
1907 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1908 * IS_NUMBER_NEG
1909 * 0 if does not look like number.
1910 *
1911 * In fact possible values are 0 and
1912 * IS_NUMBER_TO_INT_BY_ATOL 123
1913 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1914 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
300aed98 1915 * IS_NUMBER_INFINITY
25da4f38
IZ		 1916 * with a possible addition of IS_NUMBER_NEG.
1917 */
1918
954c1994
GS		 1919/*
1920=for apidoc looks_like_number
1921
1922Test if an the content of an SV looks like a number (or is a
1923number).
1924
1925=cut
1926*/
1927
36477c24 1928I32
864dbfa3 1929Perl_looks_like_number(pTHX_ SV *sv)
36477c24 1930{
1931 register char *s;
1932 register char *send;
1933 register char *sbegin;
25da4f38
IZ		 1934 register char *nbegin;
1935 I32 numtype = 0;
300aed98 1936 I32 sawinf = 0;
36477c24 1937 STRLEN len;
1938
1939 if (SvPOK(sv)) {
1940 sbegin = SvPVX(sv);
1941 len = SvCUR(sv);
1942 }
1943 else if (SvPOKp(sv))
1944 sbegin = SvPV(sv, len);
1945 else
1946 return 1;
1947 send = sbegin + len;
1948
1949 s = sbegin;
1950 while (isSPACE(*s))
1951 s++;
25da4f38
IZ		 1952 if (*s == '-') {
1953 s++;
1954 numtype = IS_NUMBER_NEG;
1955 }
1956 else if (*s == '+')
36477c24 1957 s++;
ff0cee69 1958
25da4f38
IZ		 1959 nbegin = s;
1960 /*
097ee67d
JH		 1961 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1962 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1963 * (int)atof().
25da4f38
IZ		 1964 */
1965
300aed98 1966 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 1967 if (isDIGIT(*s)) {
1968 do {
1969 s++;
1970 } while (isDIGIT(*s));
25da4f38
IZ		 1971
1972 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1973 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1974 else
1975 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1976
097ee67d
JH		 1977 if (*s == '.'
1978#ifdef USE_LOCALE_NUMERIC
1979 || IS_NUMERIC_RADIX(*s)
1980#endif
1981 ) {
ff0cee69 1982 s++;
25da4f38 1983 numtype |= IS_NUMBER_NOT_IV;
097ee67d 1984 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 1985 s++;
1986 }
36477c24 1987 }
097ee67d
JH		 1988 else if (*s == '.'
1989#ifdef USE_LOCALE_NUMERIC
1990 || IS_NUMERIC_RADIX(*s)
1991#endif
1992 ) {
ff0cee69 1993 s++;
25da4f38 1994 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
097ee67d 1995 /* no digits before the radix means we need digits after it */
ff0cee69 1996 if (isDIGIT(*s)) {
1997 do {
1998 s++;
1999 } while (isDIGIT(*s));
2000 }
2001 else
2002 return 0;
2003 }
300aed98
JH		 2004 else if (*s == 'I' || *s == 'i') {
2005 s++; if (*s != 'N' && *s != 'n') return 0;
2006 s++; if (*s != 'F' && *s != 'f') return 0;
2007 s++; if (*s == 'I' || *s == 'i') {
2008 s++; if (*s != 'N' && *s != 'n') return 0;
2009 s++; if (*s != 'I' && *s != 'i') return 0;
2010 s++; if (*s != 'T' && *s != 't') return 0;
2011 s++; if (*s != 'Y' && *s != 'y') return 0;
2012 }
2013 sawinf = 1;
2014 }
ff0cee69 2015 else
2016 return 0;
2017
300aed98
JH		 2018 if (sawinf)
2019 numtype = IS_NUMBER_INFINITY;
2020 else {
2021 /* we can have an optional exponent part */
2022 if (*s == 'e' || *s == 'E') {
2023 numtype &= ~IS_NUMBER_NEG;
2024 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2025 s++;
300aed98
JH		 2026 if (*s == '+' || *s == '-')
2027 s++;
2028 if (isDIGIT(*s)) {
2029 do {
2030 s++;
2031 } while (isDIGIT(*s));
2032 }
2033 else
2034 return 0;
2035 }
36477c24 2036 }
2037 while (isSPACE(*s))
2038 s++;
2039 if (s >= send)
2040 return numtype;
2041 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2042 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2043 return 0;
2044}
2045
79072805 2046char *
864dbfa3 2047Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2048{
2049 STRLEN n_a;
2050 return sv_2pv(sv, &n_a);
2051}
2052
25da4f38 2053/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2054static char *
25da4f38
IZ		 2055uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2056{
25da4f38
IZ		 2057 char *ptr = buf + TYPE_CHARS(UV);
2058 char *ebuf = ptr;
2059 int sign;
25da4f38
IZ		 2060
2061 if (is_uv)
2062 sign = 0;
2063 else if (iv >= 0) {
2064 uv = iv;
2065 sign = 0;
2066 } else {
2067 uv = -iv;
2068 sign = 1;
2069 }
2070 do {
2071 *--ptr = '0' + (uv % 10);
2072 } while (uv /= 10);
2073 if (sign)
2074 *--ptr = '-';
2075 *peob = ebuf;
2076 return ptr;
2077}
2078
1fa8b10d 2079char *
864dbfa3 2080Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2081{
2082 register char *s;
2083 int olderrno;
46fc3d4c 2084 SV *tsv;
25da4f38
IZ		 2085 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2086 char *tmpbuf = tbuf;
79072805 2087
463ee0b2
LW		 2088 if (!sv) {
2089 *lp = 0;
2090 return "";
2091 }
8990e307 2092 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2093 mg_get(sv);
2094 if (SvPOKp(sv)) {
2095 *lp = SvCUR(sv);
2096 return SvPVX(sv);
2097 }
cf2093f6 2098 if (SvIOKp(sv)) {
cf2093f6 2099 if (SvIsUV(sv))
57def98f 2100 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2101 else
57def98f 2102 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2103 tsv = Nullsv;
a0d0e21e 2104 goto tokensave;
463ee0b2
LW		 2105 }
2106 if (SvNOKp(sv)) {
2d4389e4 2107 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2108 tsv = Nullsv;
a0d0e21e 2109 goto tokensave;
463ee0b2 2110 }
16d20bd9 2111 if (!SvROK(sv)) {
d008e5eb 2112 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2113 dTHR;
d008e5eb 2114 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2115 report_uninit();
c6ee37c5 2116 }
16d20bd9
AD		 2117 *lp = 0;
2118 return "";
2119 }
463ee0b2 2120 }
ed6116ce
LW		 2121 if (SvTHINKFIRST(sv)) {
2122 if (SvROK(sv)) {
a0d0e21e
LW		 2123 SV* tmpstr;
2124 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
9e7bc3e8 2125 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2126 sv = (SV*)SvRV(sv);
2127 if (!sv)
2128 s = "NULLREF";
2129 else {
f9277f47
IZ		 2130 MAGIC *mg;
2131
ed6116ce 2132 switch (SvTYPE(sv)) {
f9277f47
IZ		 2133 case SVt_PVMG:
2134 if ( ((SvFLAGS(sv) &
2135 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2136 == (SVs_OBJECT|SVs_RMG))
57668c4d 2137 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2138 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2139 dTHR;
2cd61cdb 2140 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2141
2cd61cdb 2142 if (!mg->mg_ptr) {
8782bef2
GB		 2143 char *fptr = "msix";
2144 char reflags[6];
2145 char ch;
2146 int left = 0;
2147 int right = 4;
2148 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2149
155aba94 2150 while((ch = *fptr++)) {
8782bef2
GB		 2151 if(reganch & 1) {
2152 reflags[left++] = ch;
2153 }
2154 else {
2155 reflags[right--] = ch;
2156 }
2157 reganch >>= 1;
2158 }
2159 if(left != 4) {
2160 reflags[left] = '-';
2161 left = 5;
2162 }
2163
2164 mg->mg_len = re->prelen + 4 + left;
2165 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2166 Copy("(?", mg->mg_ptr, 2, char);
2167 Copy(reflags, mg->mg_ptr+2, left, char);
2168 Copy(":", mg->mg_ptr+left+2, 1, char);
2169 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2170 mg->mg_ptr[mg->mg_len - 1] = ')';
2171 mg->mg_ptr[mg->mg_len] = 0;
2172 }
3280af22 2173 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2174 *lp = mg->mg_len;
2175 return mg->mg_ptr;
f9277f47
IZ		 2176 }
2177 /* Fall through */
ed6116ce
LW		 2178 case SVt_NULL:
2179 case SVt_IV:
2180 case SVt_NV:
2181 case SVt_RV:
2182 case SVt_PV:
2183 case SVt_PVIV:
2184 case SVt_PVNV:
81689caa
HS		 2185 case SVt_PVBM: if (SvROK(sv))
2186 s = "REF";
2187 else
2188 s = "SCALAR"; break;
ed6116ce
LW		 2189 case SVt_PVLV: s = "LVALUE"; break;
2190 case SVt_PVAV: s = "ARRAY"; break;
2191 case SVt_PVHV: s = "HASH"; break;
2192 case SVt_PVCV: s = "CODE"; break;
2193 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2194 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2195 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2196 default: s = "UNKNOWN"; break;
2197 }
46fc3d4c 2198 tsv = NEWSV(0,0);
ed6116ce 2199 if (SvOBJECT(sv))
cea2e8a9 2200 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2201 else
46fc3d4c 2202 sv_setpv(tsv, s);
57def98f 2203 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2204 goto tokensaveref;
463ee0b2 2205 }
ed6116ce
LW		 2206 *lp = strlen(s);
2207 return s;
79072805 2208 }
0336b60e
IZ		 2209 if (SvREADONLY(sv) && !SvOK(sv)) {
2210 dTHR;
2211 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2212 report_uninit();
ed6116ce
LW		 2213 *lp = 0;
2214 return "";
79072805 2215 }
79072805 2216 }
25da4f38
IZ		 2217 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2218 /* XXXX 64-bit? IV may have better precision... */
34d861e4
JH		 2219 /* I tried changing this for to be 64-bit-aware and
2220 * the t/op/numconvert.t became very, very, angry.
2221 * --jhi Sep 1999 */
79072805
LW		 2222 if (SvTYPE(sv) < SVt_PVNV)
2223 sv_upgrade(sv, SVt_PVNV);
2224 SvGROW(sv, 28);
463ee0b2 2225 s = SvPVX(sv);
79072805 2226 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2227#ifdef apollo
463ee0b2 2228 if (SvNVX(sv) == 0.0)
79072805
LW		 2229 (void)strcpy(s,"0");
2230 else
2231#endif /*apollo*/
bbce6d69 2232 {
2d4389e4 2233 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2234 }
79072805 2235 errno = olderrno;
a0d0e21e
LW		 2236#ifdef FIXNEGATIVEZERO
2237 if (*s == '-' && s[1] == '0' && !s[2])
2238 strcpy(s,"0");
2239#endif
79072805
LW		 2240 while (*s) s++;
2241#ifdef hcx
2242 if (s[-1] == '.')
46fc3d4c 2243 *--s = '\0';
79072805
LW		 2244#endif
2245 }
748a9306 2246 else if (SvIOKp(sv)) {
25da4f38 2247 U32 isIOK = SvIOK(sv);
0336b60e 2248 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2249 char buf[TYPE_CHARS(UV)];
2250 char *ebuf, *ptr;
2251
79072805
LW		 2252 if (SvTYPE(sv) < SVt_PVIV)
2253 sv_upgrade(sv, SVt_PVIV);
0336b60e 2254 if (isUIOK)
25da4f38 2255 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2256 else
25da4f38 2257 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2258 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2259 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2260 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2261 s = SvEND(sv);
0336b60e 2262 *s = '\0';
25da4f38 2263 if (isIOK)
64f14228
GA		 2264 SvIOK_on(sv);
2265 else
2266 SvIOKp_on(sv);
0336b60e
IZ		 2267 if (isUIOK)
2268 SvIsUV_on(sv);
2269 SvPOK_on(sv);
79072805
LW		 2270 }
2271 else {
11343788 2272 dTHR;
0336b60e
IZ		 2273 if (ckWARN(WARN_UNINITIALIZED)
2274 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2275 {
1d7c1841 2276 report_uninit();
0336b60e 2277 }
a0d0e21e 2278 *lp = 0;
25da4f38
IZ		 2279 if (SvTYPE(sv) < SVt_PV)
2280 /* Typically the caller expects that sv_any is not NULL now. */
2281 sv_upgrade(sv, SVt_PV);
a0d0e21e 2282 return "";
79072805 2283 }
463ee0b2
LW		 2284 *lp = s - SvPVX(sv);
2285 SvCUR_set(sv, *lp);
79072805 2286 SvPOK_on(sv);
1d7c1841
GS		 2287 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2288 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2289 return SvPVX(sv);
a0d0e21e
LW		 2290
2291 tokensave:
2292 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2293 /* Sneaky stuff here */
2294
2295 tokensaveref:
46fc3d4c 2296 if (!tsv)
96827780 2297 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2298 sv_2mortal(tsv);
2299 *lp = SvCUR(tsv);
2300 return SvPVX(tsv);
a0d0e21e
LW		 2301 }
2302 else {
2303 STRLEN len;
46fc3d4c 2304 char *t;
2305
2306 if (tsv) {
2307 sv_2mortal(tsv);
2308 t = SvPVX(tsv);
2309 len = SvCUR(tsv);
2310 }
2311 else {
96827780
MB		 2312 t = tmpbuf;
2313 len = strlen(tmpbuf);
46fc3d4c 2314 }
a0d0e21e 2315#ifdef FIXNEGATIVEZERO
46fc3d4c 2316 if (len == 2 && t[0] == '-' && t[1] == '0') {
2317 t = "0";
2318 len = 1;
2319 }
a0d0e21e
LW		 2320#endif
2321 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2322 *lp = len;
a0d0e21e
LW		 2323 s = SvGROW(sv, len + 1);
2324 SvCUR_set(sv, len);
46fc3d4c 2325 (void)strcpy(s, t);
6bf554b4 2326 SvPOKp_on(sv);
a0d0e21e
LW		 2327 return s;
2328 }
463ee0b2
LW		 2329}
2330
7340a771
GS		 2331char *
2332Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2333{
560a288e
GS		 2334 STRLEN n_a;
2335 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2336}
2337
2338char *
2339Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2340{
2341 return sv_2pv(sv,lp);
2342}
2343
2344char *
2345Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2346{
560a288e
GS		 2347 STRLEN n_a;
2348 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2349}
2350
2351char *
2352Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2353{
560a288e 2354 sv_utf8_upgrade(sv);
7340a771
GS		 2355 return sv_2pv(sv,lp);
2356}
2357
463ee0b2
LW		 2358/* This function is only called on magical items */
2359bool
864dbfa3 2360Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2361{
8990e307 2362 if (SvGMAGICAL(sv))
463ee0b2
LW		 2363 mg_get(sv);
2364
a0d0e21e
LW		 2365 if (!SvOK(sv))
2366 return 0;
2367 if (SvROK(sv)) {
11343788 2368 dTHR;
a0d0e21e
LW		 2369 SV* tmpsv;
2370 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
9e7bc3e8 2371 return SvTRUE(tmpsv);
a0d0e21e
LW		 2372 return SvRV(sv) != 0;
2373 }
463ee0b2 2374 if (SvPOKp(sv)) {
11343788
MB		 2375 register XPV* Xpvtmp;
2376 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2377 (*Xpvtmp->xpv_pv > '0' ||
2378 Xpvtmp->xpv_cur > 1 ||
2379 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2380 return 1;
2381 else
2382 return 0;
2383 }
2384 else {
2385 if (SvIOKp(sv))
2386 return SvIVX(sv) != 0;
2387 else {
2388 if (SvNOKp(sv))
2389 return SvNVX(sv) != 0.0;
2390 else
2391 return FALSE;
2392 }
2393 }
79072805
LW		 2394}
2395
c461cf8f
JH		 2396/*
2397=for apidoc sv_utf8_upgrade
2398
2399Convert the PV of an SV to its UTF8-encoded form.
2400
2401=cut
2402*/
2403
560a288e
GS		 2404void
2405Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2406{
2407 int hicount;
2408 char *c;
2409
2410 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2411 return;
2412
2413 /* This function could be much more efficient if we had a FLAG
2414 * to signal if there are any hibit chars in the string
2415 */
2416 hicount = 0;
2417 for (c = SvPVX(sv); c < SvEND(sv); c++) {
2418 if (*c & 0x80)
2419 hicount++;
2420 }
2421
2422 if (hicount) {
2423 char *src, *dst;
2424 SvGROW(sv, SvCUR(sv) + hicount + 1);
2425
2426 src = SvEND(sv) - 1;
2427 SvCUR_set(sv, SvCUR(sv) + hicount);
2428 dst = SvEND(sv) - 1;
2429
2430 while (src < dst) {
2431 if (*src & 0x80) {
2432 dst--;
2433 uv_to_utf8((U8*)dst, (U8)*src--);
2434 dst--;
2435 }
2436 else {
2437 *dst-- = *src--;
2438 }
2439 }
2440
2441 SvUTF8_on(sv);
2442 }
2443}
2444
c461cf8f
JH		 2445/*
2446=for apidoc sv_utf8_downgrade
2447
2448Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2449This may not be possible if the PV contains non-byte encoding characters;
2450if this is the case, either returns false or, if C<fail_ok> is not
2451true, croaks.
2452
2453=cut
2454*/
2455
560a288e
GS		 2456bool
2457Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2458{
2459 if (SvPOK(sv) && SvUTF8(sv)) {
2460 char *c = SvPVX(sv);
2461 char *first_hi = 0;
2462 /* need to figure out if this is possible at all first */
2463 while (c < SvEND(sv)) {
2464 if (*c & 0x80) {
2465 I32 len;
ce32ed4b 2466 UV uv = utf8_to_uv((U8*)c, &len);
560a288e
GS		 2467 if (uv >= 256) {
2468 if (fail_ok)
2469 return FALSE;
2470 else {
2471 /* XXX might want to make a callback here instead */
9a54186f 2472 Perl_croak(aTHX_ "Big byte");
560a288e
GS		 2473 }
2474 }
2475 if (!first_hi)
2476 first_hi = c;
2477 c += len;
2478 }
2479 else {
2480 c++;
2481 }
2482 }
2483
2484 if (first_hi) {
2485 char *src = first_hi;
2486 char *dst = first_hi;
2487 while (src < SvEND(sv)) {
2488 if (*src & 0x80) {
2489 I32 len;
ce32ed4b 2490 U8 u = (U8)utf8_to_uv((U8*)src, &len);
560a288e
GS		 2491 *dst++ = u;
2492 src += len;
2493 }
2494 else {
2495 *dst++ = *src++;
2496 }
2497 }
2498 SvCUR_set(sv, dst - SvPVX(sv));
2499 }
2500 SvUTF8_off(sv);
2501 }
2502 return TRUE;
2503}
2504
c461cf8f
JH		 2505/*
2506=for apidoc sv_utf8_encode
2507
2508Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2509flag so that it looks like bytes again. Nothing calls this.
2510
2511=cut
2512*/
2513
560a288e
GS		 2514void
2515Perl_sv_utf8_encode(pTHX_ register SV *sv)
2516{
2517 sv_utf8_upgrade(sv);
2518 SvUTF8_off(sv);
2519}
2520
2521bool
2522Perl_sv_utf8_decode(pTHX_ register SV *sv)
2523{
2524 if (SvPOK(sv)) {
2525 char *c;
2526 bool has_utf = FALSE;
2527 if (!sv_utf8_downgrade(sv, TRUE))
2528 return FALSE;
2529
2530 /* it is actually just a matter of turning the utf8 flag on, but
2531 * we want to make sure everything inside is valid utf8 first.
2532 */
2533 c = SvPVX(sv);
2534 while (c < SvEND(sv)) {
2535 if (*c & 0x80) {
2536 I32 len;
2537 (void)utf8_to_uv((U8*)c, &len);
2538 if (len == 1) {
2539 /* bad utf8 */
2540 return FALSE;
2541 }
2542 c += len;
2543 has_utf = TRUE;
2544 }
2545 else {
2546 c++;
2547 }
2548 }
2549
2550 if (has_utf)
2551 SvUTF8_on(sv);
2552 }
2553 return TRUE;
2554}
2555
2556
79072805 2557/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2558 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2559 * as temporary.
2560 */
2561
954c1994
GS		 2562/*
2563=for apidoc sv_setsv
2564
2565Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2566The source SV may be destroyed if it is mortal. Does not handle 'set'
2567magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2568C<sv_setsv_mg>.
2569
2570=cut
2571*/
2572
79072805 2573void
864dbfa3 2574Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2575{
11343788 2576 dTHR;
8990e307
LW		 2577 register U32 sflags;
2578 register int dtype;
2579 register int stype;
463ee0b2 2580
79072805
LW		 2581 if (sstr == dstr)
2582 return;
2213622d 2583 SV_CHECK_THINKFIRST(dstr);
79072805 2584 if (!sstr)
3280af22 2585 sstr = &PL_sv_undef;
8990e307
LW		 2586 stype = SvTYPE(sstr);
2587 dtype = SvTYPE(dstr);
79072805 2588
a0d0e21e 2589 SvAMAGIC_off(dstr);
9e7bc3e8 2590
463ee0b2 2591 /* There's a lot of redundancy below but we're going for speed here */
79072805 2592
8990e307 2593 switch (stype) {
79072805 2594 case SVt_NULL:
aece5585 2595 undef_sstr:
20408e3c
GS		 2596 if (dtype != SVt_PVGV) {
2597 (void)SvOK_off(dstr);
2598 return;
2599 }
2600 break;
463ee0b2 2601 case SVt_IV:
aece5585
GA		 2602 if (SvIOK(sstr)) {
2603 switch (dtype) {
2604 case SVt_NULL:
8990e307 2605 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2606 break;
2607 case SVt_NV:
8990e307 2608 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2609 break;
2610 case SVt_RV:
2611 case SVt_PV:
a0d0e21e 2612 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2613 break;
2614 }
2615 (void)SvIOK_only(dstr);
2616 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2617 if (SvIsUV(sstr))
2618 SvIsUV_on(dstr);
aece5585
GA		 2619 SvTAINT(dstr);
2620 return;
8990e307 2621 }
aece5585
GA		 2622 goto undef_sstr;
2623
463ee0b2 2624 case SVt_NV:
aece5585
GA		 2625 if (SvNOK(sstr)) {
2626 switch (dtype) {
2627 case SVt_NULL:
2628 case SVt_IV:
8990e307 2629 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2630 break;
2631 case SVt_RV:
2632 case SVt_PV:
2633 case SVt_PVIV:
a0d0e21e 2634 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2635 break;
2636 }
2637 SvNVX(dstr) = SvNVX(sstr);
2638 (void)SvNOK_only(dstr);
2639 SvTAINT(dstr);
2640 return;
8990e307 2641 }
aece5585
GA		 2642 goto undef_sstr;
2643
ed6116ce 2644 case SVt_RV:
8990e307 2645 if (dtype < SVt_RV)
ed6116ce 2646 sv_upgrade(dstr, SVt_RV);
c07a80fd 2647 else if (dtype == SVt_PVGV &&
2648 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2649 sstr = SvRV(sstr);
a5f75d66 2650 if (sstr == dstr) {
1d7c1841
GS		 2651 if (GvIMPORTED(dstr) != GVf_IMPORTED
2652 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2653 {
a5f75d66 2654 GvIMPORTED_on(dstr);
1d7c1841 2655 }
a5f75d66
AD		 2656 GvMULTI_on(dstr);
2657 return;
2658 }
c07a80fd 2659 goto glob_assign;
2660 }
ed6116ce 2661 break;
463ee0b2 2662 case SVt_PV:
fc36a67e 2663 case SVt_PVFM:
8990e307 2664 if (dtype < SVt_PV)
463ee0b2 2665 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2666 break;
2667 case SVt_PVIV:
8990e307 2668 if (dtype < SVt_PVIV)
463ee0b2 2669 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2670 break;
2671 case SVt_PVNV:
8990e307 2672 if (dtype < SVt_PVNV)
463ee0b2 2673 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2674 break;
4633a7c4
LW		 2675 case SVt_PVAV:
2676 case SVt_PVHV:
2677 case SVt_PVCV:
4633a7c4 2678 case SVt_PVIO:
533c011a 2679 if (PL_op)
cea2e8a9 2680 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2681 PL_op_name[PL_op->op_type]);
4633a7c4 2682 else
cea2e8a9 2683 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2684 break;
2685
79072805 2686 case SVt_PVGV:
8990e307 2687 if (dtype <= SVt_PVGV) {
c07a80fd 2688 glob_assign:
a5f75d66 2689 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2690 char *name = GvNAME(sstr);
2691 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2692 sv_upgrade(dstr, SVt_PVGV);
6662521e 2693 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2694 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2695 GvNAME(dstr) = savepvn(name, len);
2696 GvNAMELEN(dstr) = len;
2697 SvFAKE_on(dstr); /* can coerce to non-glob */
2698 }
7bac28a0 2699 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2700 else if (PL_curstackinfo->si_type == PERLSI_SORT
2701 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2702 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2703 GvNAME(dstr));
a0d0e21e 2704 (void)SvOK_off(dstr);
a5f75d66 2705 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2706 gp_free((GV*)dstr);
79072805 2707 GvGP(dstr) = gp_ref(GvGP(sstr));
8990e307 2708 SvTAINT(dstr);
1d7c1841
GS		 2709 if (GvIMPORTED(dstr) != GVf_IMPORTED
2710 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2711 {
a5f75d66 2712 GvIMPORTED_on(dstr);
1d7c1841 2713 }
a5f75d66 2714 GvMULTI_on(dstr);
79072805
LW		 2715 return;
2716 }
2717 /* FALL THROUGH */
2718
2719 default:
973f89ab
CS		 2720 if (SvGMAGICAL(sstr)) {
2721 mg_get(sstr);
2722 if (SvTYPE(sstr) != stype) {
2723 stype = SvTYPE(sstr);
2724 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2725 goto glob_assign;
2726 }
2727 }
ded42b9f 2728 if (stype == SVt_PVLV)
6fc92669 2729 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2730 else
6fc92669 2731 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2732 }
2733
8990e307
LW		 2734 sflags = SvFLAGS(sstr);
2735
2736 if (sflags & SVf_ROK) {
2737 if (dtype >= SVt_PV) {
2738 if (dtype == SVt_PVGV) {
2739 SV *sref = SvREFCNT_inc(SvRV(sstr));
2740 SV *dref = 0;
a5f75d66 2741 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2742
2743 if (intro) {
2744 GP *gp;
1d7c1841 2745 gp_free((GV*)dstr);
a5f75d66 2746 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2747 Newz(602,gp, 1, GP);
44a8e56a 2748 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2749 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2750 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2751 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2752 }
a5f75d66 2753 GvMULTI_on(dstr);
8990e307
LW		 2754 switch (SvTYPE(sref)) {
2755 case SVt_PVAV:
a0d0e21e
LW		 2756 if (intro)
2757 SAVESPTR(GvAV(dstr));
2758 else
2759 dref = (SV*)GvAV(dstr);
8990e307 2760 GvAV(dstr) = (AV*)sref;
39bac7f7 2761 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2762 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2763 {
a5f75d66 2764 GvIMPORTED_AV_on(dstr);
1d7c1841 2765 }
8990e307
LW		 2766 break;
2767 case SVt_PVHV:
a0d0e21e
LW		 2768 if (intro)
2769 SAVESPTR(GvHV(dstr));
2770 else
2771 dref = (SV*)GvHV(dstr);
8990e307 2772 GvHV(dstr) = (HV*)sref;
39bac7f7 2773 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2774 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2775 {
a5f75d66 2776 GvIMPORTED_HV_on(dstr);
1d7c1841 2777 }
8990e307
LW		 2778 break;
2779 case SVt_PVCV:
8ebc5c01 2780 if (intro) {
2781 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2782 SvREFCNT_dec(GvCV(dstr));
2783 GvCV(dstr) = Nullcv;
68dc0745 2784 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2785 PL_sub_generation++;
8ebc5c01 2786 }
a0d0e21e 2787 SAVESPTR(GvCV(dstr));
8ebc5c01 2788 }
68dc0745 2789 else
2790 dref = (SV*)GvCV(dstr);
2791 if (GvCV(dstr) != (CV*)sref) {
748a9306 2792 CV* cv = GvCV(dstr);
4633a7c4 2793 if (cv) {
68dc0745 2794 if (!GvCVGEN((GV*)dstr) &&
2795 (CvROOT(cv) || CvXSUB(cv)))
2796 {
fe5e78ed
GS		 2797 SV *const_sv = cv_const_sv(cv);
2798 bool const_changed = TRUE;
2799 if(const_sv)
2800 const_changed = sv_cmp(const_sv,
2801 op_const_sv(CvSTART((CV*)sref),
036b4402 2802 (CV*)sref));
7bac28a0 2803 /* ahem, death to those who redefine
2804 * active sort subs */
3280af22
NIS		 2805 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2806 PL_sortcop == CvSTART(cv))
cea2e8a9 2807 Perl_croak(aTHX_
7bac28a0 2808 "Can't redefine active sort subroutine %s",
2809 GvENAME((GV*)dstr));
036b4402 2810 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
e476b1b5 2811 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
fe5e78ed
GS		 2812 "Constant subroutine %s redefined"
2813 : "Subroutine %s redefined",
2f34f9d4 2814 GvENAME((GV*)dstr));
9607fc9c 2815 }
3fe9a6f1 2816 cv_ckproto(cv, (GV*)dstr,
2817 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2818 }
a5f75d66 2819 GvCV(dstr) = (CV*)sref;
7a4c00b4 2820 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2821 GvASSUMECV_on(dstr);
3280af22 2822 PL_sub_generation++;
a5f75d66 2823 }
39bac7f7 2824 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2825 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2826 {
a5f75d66 2827 GvIMPORTED_CV_on(dstr);
1d7c1841 2828 }
8990e307 2829 break;
91bba347
LW		 2830 case SVt_PVIO:
2831 if (intro)
2832 SAVESPTR(GvIOp(dstr));
2833 else
2834 dref = (SV*)GvIOp(dstr);
2835 GvIOp(dstr) = (IO*)sref;
2836 break;
f4d13ee9
JH		 2837 case SVt_PVFM:
2838 if (intro)
2839 SAVESPTR(GvFORM(dstr));
2840 else
2841 dref = (SV*)GvFORM(dstr);
2842 GvFORM(dstr) = (CV*)sref;
2843 break;
8990e307 2844 default:
a0d0e21e
LW		 2845 if (intro)
2846 SAVESPTR(GvSV(dstr));
2847 else
2848 dref = (SV*)GvSV(dstr);
8990e307 2849 GvSV(dstr) = sref;
39bac7f7 2850 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2851 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2852 {
a5f75d66 2853 GvIMPORTED_SV_on(dstr);
1d7c1841 2854 }
8990e307
LW		 2855 break;
2856 }
2857 if (dref)
2858 SvREFCNT_dec(dref);
a0d0e21e
LW		 2859 if (intro)
2860 SAVEFREESV(sref);
8990e307
LW		 2861 SvTAINT(dstr);
2862 return;
2863 }
a0d0e21e 2864 if (SvPVX(dstr)) {
760ac839 2865 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2866 if (SvLEN(dstr))
2867 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2868 SvLEN(dstr)=SvCUR(dstr)=0;
2869 }
8990e307 2870 }
a0d0e21e 2871 (void)SvOK_off(dstr);
8990e307 2872 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2873 SvROK_on(dstr);
8990e307 2874 if (sflags & SVp_NOK) {
ed6116ce
LW		 2875 SvNOK_on(dstr);
2876 SvNVX(dstr) = SvNVX(sstr);
2877 }
8990e307 2878 if (sflags & SVp_IOK) {
a0d0e21e 2879 (void)SvIOK_on(dstr);
ed6116ce 2880 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2881 if (sflags & SVf_IVisUV)
25da4f38 2882 SvIsUV_on(dstr);
ed6116ce 2883 }
a0d0e21e
LW		 2884 if (SvAMAGIC(sstr)) {
2885 SvAMAGIC_on(dstr);
2886 }
ed6116ce 2887 }
8990e307 2888 else if (sflags & SVp_POK) {
79072805
LW		 2889
2890 /*
2891 * Check to see if we can just swipe the string. If so, it's a
2892 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2893 * It might even be a win on short strings if SvPVX(dstr)
2894 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2895 */
2896
ff68c719 2897 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2898 SvREFCNT(sstr) == 1 && /* and no other references to it? */
a5f75d66
AD		 2899 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2900 {
adbc6bb1 2901 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2902 if (SvOOK(dstr)) {
2903 SvFLAGS(dstr) &= ~SVf_OOK;
2904 Safefree(SvPVX(dstr) - SvIVX(dstr));
2905 }
50483b2c 2906 else if (SvLEN(dstr))
a5f75d66 2907 Safefree(SvPVX(dstr));
79072805 2908 }
a5f75d66 2909 (void)SvPOK_only(dstr);
463ee0b2 2910 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2911 SvLEN_set(dstr, SvLEN(sstr));
2912 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2913
79072805 2914 SvTEMP_off(dstr);
2b1c7e3e 2915 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2916 SvPV_set(sstr, Nullch);
2917 SvLEN_set(sstr, 0);
a5f75d66
AD		 2918 SvCUR_set(sstr, 0);
2919 SvTEMP_off(sstr);
79072805
LW		 2920 }
2921 else { /* have to copy actual string */
8990e307
LW		 2922 STRLEN len = SvCUR(sstr);
2923
2924 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2925 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2926 SvCUR_set(dstr, len);
2927 *SvEND(dstr) = '\0';
a0d0e21e 2928 (void)SvPOK_only(dstr);
79072805 2929 }
3aa33fe5 2930 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2931 SvUTF8_on(dstr);
79072805 2932 /*SUPPRESS 560*/
8990e307 2933 if (sflags & SVp_NOK) {
79072805 2934 SvNOK_on(dstr);
463ee0b2 2935 SvNVX(dstr) = SvNVX(sstr);
79072805 2936 }
8990e307 2937 if (sflags & SVp_IOK) {
a0d0e21e 2938 (void)SvIOK_on(dstr);
463ee0b2 2939 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2940 if (sflags & SVf_IVisUV)
25da4f38 2941 SvIsUV_on(dstr);
79072805
LW		 2942 }
2943 }
8990e307 2944 else if (sflags & SVp_NOK) {
463ee0b2 2945 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2946 (void)SvNOK_only(dstr);
2b1c7e3e 2947 if (sflags & SVf_IOK) {
a0d0e21e 2948 (void)SvIOK_on(dstr);
463ee0b2 2949 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2950 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2951 if (sflags & SVf_IVisUV)
25da4f38 2952 SvIsUV_on(dstr);
79072805
LW		 2953 }
2954 }
8990e307 2955 else if (sflags & SVp_IOK) {
a0d0e21e 2956 (void)SvIOK_only(dstr);
463ee0b2 2957 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2958 if (sflags & SVf_IVisUV)
25da4f38 2959 SvIsUV_on(dstr);
79072805
LW		 2960 }
2961 else {
20408e3c 2962 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2963 if (ckWARN(WARN_MISC))
2964 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2965 }
2966 else
2967 (void)SvOK_off(dstr);
a0d0e21e 2968 }
463ee0b2 2969 SvTAINT(dstr);
79072805
LW		 2970}
2971
954c1994
GS		 2972/*
2973=for apidoc sv_setsv_mg
2974
2975Like C<sv_setsv>, but also handles 'set' magic.
2976
2977=cut
2978*/
2979
79072805 2980void
864dbfa3 2981Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2982{
2983 sv_setsv(dstr,sstr);
2984 SvSETMAGIC(dstr);
2985}
2986
954c1994
GS		 2987/*
2988=for apidoc sv_setpvn
2989
2990Copies a string into an SV. The C<len> parameter indicates the number of
2991bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2992
2993=cut
2994*/
2995
ef50df4b 2996void
864dbfa3 2997Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2998{
c6f8c383 2999 register char *dptr;
4561caa4
CS		 3000 assert(len >= 0); /* STRLEN is probably unsigned, so this may
3001 elicit a warning, but it won't hurt. */
2213622d 3002 SV_CHECK_THINKFIRST(sv);
463ee0b2 3003 if (!ptr) {
a0d0e21e 3004 (void)SvOK_off(sv);
463ee0b2
LW		 3005 return;
3006 }
6fc92669 3007 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3008
79072805 3009 SvGROW(sv, len + 1);
c6f8c383
GA		 3010 dptr = SvPVX(sv);
3011 Move(ptr,dptr,len,char);
3012 dptr[len] = '\0';
79072805 3013 SvCUR_set(sv, len);
a0d0e21e 3014 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3015 SvTAINT(sv);
79072805
LW		 3016}
3017
954c1994
GS		 3018/*
3019=for apidoc sv_setpvn_mg
3020
3021Like C<sv_setpvn>, but also handles 'set' magic.
3022
3023=cut
3024*/
3025
79072805 3026void
864dbfa3 3027Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3028{
3029 sv_setpvn(sv,ptr,len);
3030 SvSETMAGIC(sv);
3031}
3032
954c1994
GS		 3033/*
3034=for apidoc sv_setpv
3035
3036Copies a string into an SV. The string must be null-terminated. Does not
3037handle 'set' magic. See C<sv_setpv_mg>.
3038
3039=cut
3040*/
3041
ef50df4b 3042void
864dbfa3 3043Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3044{
3045 register STRLEN len;
3046
2213622d 3047 SV_CHECK_THINKFIRST(sv);
463ee0b2 3048 if (!ptr) {
a0d0e21e 3049 (void)SvOK_off(sv);
463ee0b2
LW		 3050 return;
3051 }
79072805 3052 len = strlen(ptr);
6fc92669 3053 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3054
79072805 3055 SvGROW(sv, len + 1);
463ee0b2 3056 Move(ptr,SvPVX(sv),len+1,char);
79072805 3057 SvCUR_set(sv, len);
a0d0e21e 3058 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3059 SvTAINT(sv);
3060}
3061
954c1994
GS		 3062/*
3063=for apidoc sv_setpv_mg
3064
3065Like C<sv_setpv>, but also handles 'set' magic.
3066
3067=cut
3068*/
3069
463ee0b2 3070void
864dbfa3 3071Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3072{
3073 sv_setpv(sv,ptr);
3074 SvSETMAGIC(sv);
3075}
3076
954c1994
GS		 3077/*
3078=for apidoc sv_usepvn
3079
3080Tells an SV to use C<ptr> to find its string value. Normally the string is
3081stored inside the SV but sv_usepvn allows the SV to use an outside string.
3082The C<ptr> should point to memory that was allocated by C<malloc>. The
3083string length, C<len>, must be supplied. This function will realloc the
3084memory pointed to by C<ptr>, so that pointer should not be freed or used by
3085the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3086See C<sv_usepvn_mg>.
3087
3088=cut
3089*/
3090
ef50df4b 3091void
864dbfa3 3092Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3093{
2213622d 3094 SV_CHECK_THINKFIRST(sv);
c6f8c383 3095 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3096 if (!ptr) {
a0d0e21e 3097 (void)SvOK_off(sv);
463ee0b2
LW		 3098 return;
3099 }
a0ed51b3 3100 (void)SvOOK_off(sv);
50483b2c 3101 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3102 Safefree(SvPVX(sv));
3103 Renew(ptr, len+1, char);
3104 SvPVX(sv) = ptr;
3105 SvCUR_set(sv, len);
3106 SvLEN_set(sv, len+1);
3107 *SvEND(sv) = '\0';
a0d0e21e 3108 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3109 SvTAINT(sv);
79072805
LW		 3110}
3111
954c1994
GS		 3112/*
3113=for apidoc sv_usepvn_mg
3114
3115Like C<sv_usepvn>, but also handles 'set' magic.
3116
3117=cut
3118*/
3119
ef50df4b 3120void
864dbfa3 3121Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3122{
51c1089b 3123 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3124 SvSETMAGIC(sv);
3125}
3126
6fc92669 3127void
864dbfa3 3128Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3129{
2213622d
GA		 3130 if (SvREADONLY(sv)) {
3131 dTHR;
3280af22 3132 if (PL_curcop != &PL_compiling)
cea2e8a9 3133 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3134 }
2213622d
GA		 3135 if (SvROK(sv))
3136 sv_unref(sv);
6fc92669
GS		 3137 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3138 sv_unglob(sv);
0f15f207
MB		 3139}
3140
954c1994
GS		 3141/*
3142=for apidoc sv_chop
3143
3144Efficient removal of characters from the beginning of the string buffer.
3145SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3146the string buffer. The C<ptr> becomes the first character of the adjusted
3147string.
3148
3149=cut
3150*/
3151
79072805 3152void
864dbfa3 3153Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
8ac85365
NIS		 3154
3155
79072805
LW		 3156{
3157 register STRLEN delta;
3158
a0d0e21e 3159 if (!ptr || !SvPOKp(sv))
79072805 3160 return;
2213622d 3161 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3162 if (SvTYPE(sv) < SVt_PVIV)
3163 sv_upgrade(sv,SVt_PVIV);
3164
3165 if (!SvOOK(sv)) {
50483b2c
JD		 3166 if (!SvLEN(sv)) { /* make copy of shared string */
3167 char *pvx = SvPVX(sv);
3168 STRLEN len = SvCUR(sv);
3169 SvGROW(sv, len + 1);
3170 Move(pvx,SvPVX(sv),len,char);
3171 *SvEND(sv) = '\0';
3172 }
463ee0b2 3173 SvIVX(sv) = 0;
79072805
LW		 3174 SvFLAGS(sv) |= SVf_OOK;
3175 }
25da4f38 3176 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3177 delta = ptr - SvPVX(sv);
79072805
LW		 3178 SvLEN(sv) -= delta;
3179 SvCUR(sv) -= delta;
463ee0b2
LW		 3180 SvPVX(sv) += delta;
3181 SvIVX(sv) += delta;
79072805
LW		 3182}
3183
954c1994
GS		 3184/*
3185=for apidoc sv_catpvn
3186
3187Concatenates the string onto the end of the string which is in the SV. The
3188C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3189'set' magic. See C<sv_catpvn_mg>.
3190
3191=cut
3192*/
3193
79072805 3194void
864dbfa3 3195Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3196{
463ee0b2 3197 STRLEN tlen;
748a9306 3198 char *junk;
a0d0e21e 3199
748a9306 3200 junk = SvPV_force(sv, tlen);
463ee0b2 3201 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3202 if (ptr == junk)
3203 ptr = SvPVX(sv);
463ee0b2 3204 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3205 SvCUR(sv) += len;
3206 *SvEND(sv) = '\0';
d41ff1b8 3207 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3208 SvTAINT(sv);
79072805
LW		 3209}
3210
954c1994
GS		 3211/*
3212=for apidoc sv_catpvn_mg
3213
3214Like C<sv_catpvn>, but also handles 'set' magic.
3215
3216=cut
3217*/
3218
79072805 3219void
864dbfa3 3220Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3221{
3222 sv_catpvn(sv,ptr,len);
3223 SvSETMAGIC(sv);
3224}
3225
954c1994
GS		 3226/*
3227=for apidoc sv_catsv
3228
3229Concatenates the string from SV C<ssv> onto the end of the string in SV
3230C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3231
3232=cut
3233*/
3234
ef50df4b 3235void
864dbfa3 3236Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3237{
3238 char *s;
463ee0b2 3239 STRLEN len;
79072805
LW		 3240 if (!sstr)
3241 return;
155aba94 3242 if ((s = SvPV(sstr, len))) {
e84ff256 3243 if (DO_UTF8(sstr)) {
560a288e 3244 sv_utf8_upgrade(dstr);
e84ff256 3245 sv_catpvn(dstr,s,len);
560a288e 3246 SvUTF8_on(dstr);
e84ff256
GS		 3247 }
3248 else
3249 sv_catpvn(dstr,s,len);
560a288e 3250 }
79072805
LW		 3251}
3252
954c1994
GS		 3253/*
3254=for apidoc sv_catsv_mg
3255
3256Like C<sv_catsv>, but also handles 'set' magic.
3257
3258=cut
3259*/
3260
79072805 3261void
864dbfa3 3262Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3263{
3264 sv_catsv(dstr,sstr);
3265 SvSETMAGIC(dstr);
3266}
3267
954c1994
GS		 3268/*
3269=for apidoc sv_catpv
3270
3271Concatenates the string onto the end of the string which is in the SV.
3272Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3273
3274=cut
3275*/
3276
ef50df4b 3277void
864dbfa3 3278Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3279{
3280 register STRLEN len;
463ee0b2 3281 STRLEN tlen;
748a9306 3282 char *junk;
79072805 3283
79072805
LW		 3284 if (!ptr)
3285 return;
748a9306 3286 junk = SvPV_force(sv, tlen);
79072805 3287 len = strlen(ptr);
463ee0b2 3288 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3289 if (ptr == junk)
3290 ptr = SvPVX(sv);
463ee0b2 3291 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3292 SvCUR(sv) += len;
d41ff1b8 3293 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3294 SvTAINT(sv);
79072805
LW		 3295}
3296
954c1994
GS		 3297/*
3298=for apidoc sv_catpv_mg
3299
3300Like C<sv_catpv>, but also handles 'set' magic.
3301
3302=cut
3303*/
3304
ef50df4b 3305void
864dbfa3 3306Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3307{
51c1089b 3308 sv_catpv(sv,ptr);
ef50df4b
GS		 3309 SvSETMAGIC(sv);
3310}
3311
79072805 3312SV *
864dbfa3 3313Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3314{
3315 register SV *sv;
3316
4561caa4 3317 new_SV(sv);
79072805
LW		 3318 if (len) {
3319 sv_upgrade(sv, SVt_PV);
3320 SvGROW(sv, len + 1);
3321 }
3322 return sv;
3323}
3324
1edc1566 3325/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3326
954c1994
GS		 3327/*
3328=for apidoc sv_magic
3329
3330Adds magic to an SV.
3331
3332=cut
3333*/
3334
79072805 3335void
864dbfa3 3336Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3337{
3338 MAGIC* mg;
3339
0f15f207
MB		 3340 if (SvREADONLY(sv)) {
3341 dTHR;
3280af22 3342 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3343 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3344 }
4633a7c4 3345 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3346 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3347 if (how == 't')
565764a8 3348 mg->mg_len |= 1;
463ee0b2 3349 return;
748a9306 3350 }
463ee0b2
LW		 3351 }
3352 else {
c6f8c383 3353 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3354 }
79072805
LW		 3355 Newz(702,mg, 1, MAGIC);
3356 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3357
79072805 3358 SvMAGIC(sv) = mg;
c277df42 3359 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3360 mg->mg_obj = obj;
85e6fe83 3361 else {
11343788 3362 dTHR;
8990e307 3363 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3364 mg->mg_flags |= MGf_REFCOUNTED;
3365 }
79072805 3366 mg->mg_type = how;
565764a8 3367 mg->mg_len = namlen;
1edc1566 3368 if (name)
3369 if (namlen >= 0)
3370 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3371 else if (namlen == HEf_SVKEY)
1edc1566 3372 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3373
79072805
LW		 3374 switch (how) {
3375 case 0:
22c35a8c 3376 mg->mg_virtual = &PL_vtbl_sv;
79072805 3377 break;
a0d0e21e 3378 case 'A':
22c35a8c 3379 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3380 break;
3381 case 'a':
22c35a8c 3382 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3383 break;
3384 case 'c':
3385 mg->mg_virtual = 0;
3386 break;
79072805 3387 case 'B':
22c35a8c 3388 mg->mg_virtual = &PL_vtbl_bm;
79072805 3389 break;
6cef1e77 3390 case 'D':
22c35a8c 3391 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3392 break;
3393 case 'd':
22c35a8c 3394 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3395 break;
79072805 3396 case 'E':
22c35a8c 3397 mg->mg_virtual = &PL_vtbl_env;
79072805 3398 break;
55497cff 3399 case 'f':
22c35a8c 3400 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3401 break;
79072805 3402 case 'e':
22c35a8c 3403 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3404 break;
93a17b20 3405 case 'g':
22c35a8c 3406 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3407 break;
463ee0b2 3408 case 'I':
22c35a8c 3409 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3410 break;
3411 case 'i':
22c35a8c 3412 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3413 break;
16660edb 3414 case 'k':
22c35a8c 3415 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3416 break;
79072805 3417 case 'L':
a0d0e21e 3418 SvRMAGICAL_on(sv);
93a17b20
LW		 3419 mg->mg_virtual = 0;
3420 break;
3421 case 'l':
22c35a8c 3422 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3423 break;
f93b4edd
MB		 3424#ifdef USE_THREADS
3425 case 'm':
22c35a8c 3426 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3427 break;
3428#endif /* USE_THREADS */
36477c24 3429#ifdef USE_LOCALE_COLLATE
bbce6d69 3430 case 'o':
22c35a8c 3431 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3432 break;
36477c24 3433#endif /* USE_LOCALE_COLLATE */
463ee0b2 3434 case 'P':
22c35a8c 3435 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3436 break;
3437 case 'p':
a0d0e21e 3438 case 'q':
22c35a8c 3439 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3440 break;
c277df42 3441 case 'r':
22c35a8c 3442 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3443 break;
79072805 3444 case 'S':
22c35a8c 3445 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3446 break;
3447 case 's':
22c35a8c 3448 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3449 break;
463ee0b2 3450 case 't':
22c35a8c 3451 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3452 mg->mg_len = 1;
463ee0b2 3453 break;
79072805 3454 case 'U':
22c35a8c 3455 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3456 break;
3457 case 'v':
22c35a8c 3458 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3459 break;
3460 case 'x':
22c35a8c 3461 mg->mg_virtual = &PL_vtbl_substr;
79072805 3462 break;
5f05dabc 3463 case 'y':
22c35a8c 3464 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3465 break;
79072805 3466 case '*':
22c35a8c 3467 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3468 break;
3469 case '#':
22c35a8c 3470 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3471 break;
a0d0e21e 3472 case '.':
22c35a8c 3473 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3474 break;
810b8aa5
GS		 3475 case '<':
3476 mg->mg_virtual = &PL_vtbl_backref;
3477 break;
4633a7c4
LW		 3478 case '~': /* Reserved for use by extensions not perl internals. */
3479 /* Useful for attaching extension internal data to perl vars. */
3480 /* Note that multiple extensions may clash if magical scalars */
3481 /* etc holding private data from one are passed to another. */
3482 SvRMAGICAL_on(sv);
a0d0e21e 3483 break;
79072805 3484 default:
cea2e8a9 3485 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3486 }
8990e307
LW		 3487 mg_magical(sv);
3488 if (SvGMAGICAL(sv))
3489 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3490}
3491
c461cf8f
JH		 3492/*
3493=for apidoc sv_unmagic
3494
3495Removes magic from an SV.
3496
3497=cut
3498*/
3499
463ee0b2 3500int
864dbfa3 3501Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3502{
3503 MAGIC* mg;
3504 MAGIC** mgp;
91bba347 3505 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3506 return 0;
3507 mgp = &SvMAGIC(sv);
3508 for (mg = *mgp; mg; mg = *mgp) {
3509 if (mg->mg_type == type) {
3510 MGVTBL* vtbl = mg->mg_virtual;
3511 *mgp = mg->mg_moremagic;
1d7c1841 3512 if (vtbl && vtbl->svt_free)
fc0dc3b3 3513 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3514 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3515 if (mg->mg_len >= 0)
1edc1566 3516 Safefree(mg->mg_ptr);
565764a8 3517 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3518 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3519 if (mg->mg_flags & MGf_REFCOUNTED)
3520 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3521 Safefree(mg);
3522 }
3523 else
3524 mgp = &mg->mg_moremagic;
79072805 3525 }
91bba347 3526 if (!SvMAGIC(sv)) {
463ee0b2 3527 SvMAGICAL_off(sv);
8990e307 3528 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3529 }
3530
3531 return 0;
79072805
LW		 3532}
3533
c461cf8f
JH		 3534/*
3535=for apidoc sv_rvweaken
3536
3537Weaken a reference.
3538
3539=cut
3540*/
3541
810b8aa5 3542SV *
864dbfa3 3543Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3544{
3545 SV *tsv;
3546 if (!SvOK(sv)) /* let undefs pass */
3547 return sv;
3548 if (!SvROK(sv))
cea2e8a9 3549 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3550 else if (SvWEAKREF(sv)) {
3551 dTHR;
3552 if (ckWARN(WARN_MISC))
cea2e8a9 3553 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3554 return sv;
3555 }
3556 tsv = SvRV(sv);
3557 sv_add_backref(tsv, sv);
3558 SvWEAKREF_on(sv);
3559 SvREFCNT_dec(tsv);
3560 return sv;
3561}
3562
3563STATIC void
cea2e8a9 3564S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3565{
3566 AV *av;
3567 MAGIC *mg;
3568 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3569 av = (AV*)mg->mg_obj;
3570 else {
3571 av = newAV();
3572 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3573 SvREFCNT_dec(av); /* for sv_magic */
3574 }
3575 av_push(av,sv);
3576}
3577
3578STATIC void
cea2e8a9 3579S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3580{
3581 AV *av;
3582 SV **svp;
3583 I32 i;
3584 SV *tsv = SvRV(sv);
3585 MAGIC *mg;
3586 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3587 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3588 av = (AV *)mg->mg_obj;
3589 svp = AvARRAY(av);
3590 i = AvFILLp(av);
3591 while (i >= 0) {
3592 if (svp[i] == sv) {
3593 svp[i] = &PL_sv_undef; /* XXX */
3594 }
3595 i--;
3596 }
3597}
3598
954c1994
GS		 3599/*
3600=for apidoc sv_insert
3601
3602Inserts a string at the specified offset/length within the SV. Similar to
3603the Perl substr() function.
3604
3605=cut
3606*/
3607
79072805 3608void
864dbfa3 3609Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3610{
3611 register char *big;
3612 register char *mid;
3613 register char *midend;
3614 register char *bigend;
3615 register I32 i;
6ff81951
GS		 3616 STRLEN curlen;
3617
79072805 3618
8990e307 3619 if (!bigstr)
cea2e8a9 3620 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3621 SvPV_force(bigstr, curlen);
60fa28ff 3622 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3623 if (offset + len > curlen) {
3624 SvGROW(bigstr, offset+len+1);
3625 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3626 SvCUR_set(bigstr, offset+len);
3627 }
79072805 3628
69b47968 3629 SvTAINT(bigstr);
79072805
LW		 3630 i = littlelen - len;
3631 if (i > 0) { /* string might grow */
a0d0e21e 3632 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3633 mid = big + offset + len;
3634 midend = bigend = big + SvCUR(bigstr);
3635 bigend += i;
3636 *bigend = '\0';
3637 while (midend > mid) /* shove everything down */
3638 *--bigend = *--midend;
3639 Move(little,big+offset,littlelen,char);
3640 SvCUR(bigstr) += i;
3641 SvSETMAGIC(bigstr);
3642 return;
3643 }
3644 else if (i == 0) {
463ee0b2 3645 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3646 SvSETMAGIC(bigstr);
3647 return;
3648 }
3649
463ee0b2 3650 big = SvPVX(bigstr);
79072805
LW		 3651 mid = big + offset;
3652 midend = mid + len;
3653 bigend = big + SvCUR(bigstr);
3654
3655 if (midend > bigend)
cea2e8a9 3656 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3657
3658 if (mid - big > bigend - midend) { /* faster to shorten from end */
3659 if (littlelen) {
3660 Move(little, mid, littlelen,char);
3661 mid += littlelen;
3662 }
3663 i = bigend - midend;
3664 if (i > 0) {
3665 Move(midend, mid, i,char);
3666 mid += i;
3667 }
3668 *mid = '\0';
3669 SvCUR_set(bigstr, mid - big);
3670 }
3671 /*SUPPRESS 560*/
155aba94 3672 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3673 midend -= littlelen;
3674 mid = midend;
3675 sv_chop(bigstr,midend-i);
3676 big += i;
3677 while (i--)
3678 *--midend = *--big;
3679 if (littlelen)
3680 Move(little, mid, littlelen,char);
3681 }
3682 else if (littlelen) {
3683 midend -= littlelen;
3684 sv_chop(bigstr,midend);
3685 Move(little,midend,littlelen,char);
3686 }
3687 else {
3688 sv_chop(bigstr,midend);
3689 }
3690 SvSETMAGIC(bigstr);
3691}
3692
c461cf8f
JH		 3693/*
3694=for apidoc sv_replace
3695
3696Make the first argument a copy of the second, then delete the original.
3697
3698=cut
3699*/
79072805
LW		 3700
3701void
864dbfa3 3702Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3703{
0453d815 3704 dTHR;
79072805 3705 U32 refcnt = SvREFCNT(sv);
2213622d 3706 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3707 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3708 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3709 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3710 if (SvMAGICAL(nsv))
3711 mg_free(nsv);
3712 else
3713 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3714 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3715 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3716 SvMAGICAL_off(sv);
3717 SvMAGIC(sv) = 0;
3718 }
79072805
LW		 3719 SvREFCNT(sv) = 0;
3720 sv_clear(sv);
477f5d66 3721 assert(!SvREFCNT(sv));
79072805
LW		 3722 StructCopy(nsv,sv,SV);
3723 SvREFCNT(sv) = refcnt;
1edc1566 3724 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3725 del_SV(nsv);
79072805
LW		 3726}
3727
c461cf8f
JH		 3728/*
3729=for apidoc sv_clear
3730
3731Clear an SV, making it empty. Does not free the memory used by the SV
3732itself.
3733
3734=cut
3735*/
3736
79072805 3737void
864dbfa3 3738Perl_sv_clear(pTHX_ register SV *sv)
79072805 3739{
ec12f114 3740 HV* stash;
79072805
LW		 3741 assert(sv);
3742 assert(SvREFCNT(sv) == 0);
3743
ed6116ce 3744 if (SvOBJECT(sv)) {
e858de61 3745 dTHR;
3280af22 3746 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3747 djSP;
8ebc5c01 3748 GV* destructor;
837485b6 3749 SV tmpref;
a0d0e21e 3750
837485b6
GS		 3751 Zero(&tmpref, 1, SV);
3752 sv_upgrade(&tmpref, SVt_RV);
3753 SvROK_on(&tmpref);
3754 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3755 SvREFCNT(&tmpref) = 1;
8ebc5c01 3756
4e8e7886
GS		 3757 do {
3758 stash = SvSTASH(sv);
3759 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3760 if (destructor) {
3761 ENTER;
e788e7d3 3762 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3763 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3764 EXTEND(SP, 2);
3765 PUSHMARK(SP);
837485b6 3766 PUSHs(&tmpref);
4e8e7886 3767 PUTBACK;
864dbfa3
GS		 3768 call_sv((SV*)GvCV(destructor),
3769 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3770 SvREFCNT(sv)--;
d3acc0f7 3771 POPSTACK;
3095d977 3772 SPAGAIN;
4e8e7886
GS		 3773 LEAVE;
3774 }
3775 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3776
837485b6 3777 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3778
3779 if (SvREFCNT(sv)) {
3780 if (PL_in_clean_objs)
cea2e8a9 3781 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3782 HvNAME(stash));
3783 /* DESTROY gave object new lease on life */
3784 return;
3785 }
a0d0e21e 3786 }
4e8e7886 3787
a0d0e21e 3788 if (SvOBJECT(sv)) {
4e8e7886 3789 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3790 SvOBJECT_off(sv); /* Curse the object. */
3791 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3792 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3793 }
463ee0b2 3794 }
c07a80fd 3795 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3796 mg_free(sv);
ec12f114 3797 stash = NULL;
79072805 3798 switch (SvTYPE(sv)) {
8990e307 3799 case SVt_PVIO:
df0bd2f4
GS		 3800 if (IoIFP(sv) &&
3801 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3802 IoIFP(sv) != PerlIO_stdout() &&
3803 IoIFP(sv) != PerlIO_stderr())
93578b34 3804 {
f2b5be74 3805 io_close((IO*)sv, FALSE);
93578b34 3806 }
1d7c1841 3807 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3808 PerlDir_close(IoDIRP(sv));
1d7c1841 3809 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3810 Safefree(IoTOP_NAME(sv));
3811 Safefree(IoFMT_NAME(sv));
3812 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3813 /* FALL THROUGH */
79072805 3814 case SVt_PVBM:
a0d0e21e 3815 goto freescalar;
79072805 3816 case SVt_PVCV:
748a9306 3817 case SVt_PVFM:
85e6fe83 3818 cv_undef((CV*)sv);
a0d0e21e 3819 goto freescalar;
79072805 3820 case SVt_PVHV:
85e6fe83 3821 hv_undef((HV*)sv);
a0d0e21e 3822 break;
79072805 3823 case SVt_PVAV:
85e6fe83 3824 av_undef((AV*)sv);
a0d0e21e 3825 break;
02270b4e
GS		 3826 case SVt_PVLV:
3827 SvREFCNT_dec(LvTARG(sv));
3828 goto freescalar;
a0d0e21e 3829 case SVt_PVGV:
1edc1566 3830 gp_free((GV*)sv);
a0d0e21e 3831 Safefree(GvNAME(sv));
ec12f114
JPC		 3832 /* cannot decrease stash refcount yet, as we might recursively delete
3833 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3834 of stash until current sv is completely gone.
3835 -- JohnPC, 27 Mar 1998 */
3836 stash = GvSTASH(sv);
a0d0e21e 3837 /* FALL THROUGH */
79072805 3838 case SVt_PVMG:
79072805
LW		 3839 case SVt_PVNV:
3840 case SVt_PVIV:
a0d0e21e
LW		 3841 freescalar:
3842 (void)SvOOK_off(sv);
79072805
LW		 3843 /* FALL THROUGH */
3844 case SVt_PV:
a0d0e21e 3845 case SVt_RV:
810b8aa5
GS		 3846 if (SvROK(sv)) {
3847 if (SvWEAKREF(sv))
3848 sv_del_backref(sv);
3849 else
3850 SvREFCNT_dec(SvRV(sv));
3851 }
1edc1566 3852 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3853 Safefree(SvPVX(sv));
79072805 3854 break;
a0d0e21e 3855/*
79072805 3856 case SVt_NV:
79072805 3857 case SVt_IV:
79072805
LW		 3858 case SVt_NULL:
3859 break;
a0d0e21e 3860*/
79072805
LW		 3861 }
3862
3863 switch (SvTYPE(sv)) {
3864 case SVt_NULL:
3865 break;
79072805
LW		 3866 case SVt_IV:
3867 del_XIV(SvANY(sv));
3868 break;
3869 case SVt_NV:
3870 del_XNV(SvANY(sv));
3871 break;
ed6116ce
LW		 3872 case SVt_RV:
3873 del_XRV(SvANY(sv));
3874 break;
79072805
LW		 3875 case SVt_PV:
3876 del_XPV(SvANY(sv));
3877 break;
3878 case SVt_PVIV:
3879 del_XPVIV(SvANY(sv));
3880 break;
3881 case SVt_PVNV:
3882 del_XPVNV(SvANY(sv));
3883 break;
3884 case SVt_PVMG:
3885 del_XPVMG(SvANY(sv));
3886 break;
3887 case SVt_PVLV:
3888 del_XPVLV(SvANY(sv));
3889 break;
3890 case SVt_PVAV:
3891 del_XPVAV(SvANY(sv));
3892 break;
3893 case SVt_PVHV:
3894 del_XPVHV(SvANY(sv));
3895 break;
3896 case SVt_PVCV:
3897 del_XPVCV(SvANY(sv));
3898 break;
3899 case SVt_PVGV:
3900 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3901 /* code duplication for increased performance. */
3902 SvFLAGS(sv) &= SVf_BREAK;
3903 SvFLAGS(sv) |= SVTYPEMASK;
3904 /* decrease refcount of the stash that owns this GV, if any */
3905 if (stash)
3906 SvREFCNT_dec(stash);
3907 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3908 case SVt_PVBM:
3909 del_XPVBM(SvANY(sv));
3910 break;
3911 case SVt_PVFM:
3912 del_XPVFM(SvANY(sv));
3913 break;
8990e307
LW		 3914 case SVt_PVIO:
3915 del_XPVIO(SvANY(sv));
3916 break;
79072805 3917 }
a0d0e21e 3918 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3919 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3920}
3921
3922SV *
864dbfa3 3923Perl_sv_newref(pTHX_ SV *sv)
79072805 3924{
463ee0b2 3925 if (sv)
dce16143 3926 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3927 return sv;
3928}
3929
c461cf8f
JH		 3930/*
3931=for apidoc sv_free
3932
3933Free the memory used by an SV.
3934
3935=cut
3936*/
3937
79072805 3938void
864dbfa3 3939Perl_sv_free(pTHX_ SV *sv)
79072805 3940{
0453d815 3941 dTHR;
dce16143
MB		 3942 int refcount_is_zero;
3943
79072805
LW		 3944 if (!sv)
3945 return;
a0d0e21e
LW		 3946 if (SvREFCNT(sv) == 0) {
3947 if (SvFLAGS(sv) & SVf_BREAK)
3948 return;
3280af22 3949 if (PL_in_clean_all) /* All is fair */
1edc1566 3950 return;
d689ffdd
JP		 3951 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3952 /* make sure SvREFCNT(sv)==0 happens very seldom */
3953 SvREFCNT(sv) = (~(U32)0)/2;
3954 return;
3955 }
0453d815
PM		 3956 if (ckWARN_d(WARN_INTERNAL))
3957 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3958 return;
3959 }
dce16143
MB		 3960 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3961 if (!refcount_is_zero)
8990e307 3962 return;
463ee0b2
LW		 3963#ifdef DEBUGGING
3964 if (SvTEMP(sv)) {
0453d815 3965 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3966 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3967 "Attempt to free temp prematurely: SV 0x%"UVxf,
3968 PTR2UV(sv));
79072805 3969 return;
79072805 3970 }
463ee0b2 3971#endif
d689ffdd
JP		 3972 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3973 /* make sure SvREFCNT(sv)==0 happens very seldom */
3974 SvREFCNT(sv) = (~(U32)0)/2;
3975 return;
3976 }
79072805 3977 sv_clear(sv);
477f5d66
CS		 3978 if (! SvREFCNT(sv))
3979 del_SV(sv);
79072805
LW		 3980}
3981
954c1994
GS		 3982/*
3983=for apidoc sv_len
3984
3985Returns the length of the string in the SV. See also C<SvCUR>.
3986
3987=cut
3988*/
3989
79072805 3990STRLEN
864dbfa3 3991Perl_sv_len(pTHX_ register SV *sv)
79072805 3992{
748a9306 3993 char *junk;
463ee0b2 3994 STRLEN len;
79072805
LW		 3995
3996 if (!sv)
3997 return 0;
3998
8990e307 3999 if (SvGMAGICAL(sv))
565764a8 4000 len = mg_length(sv);
8990e307 4001 else
748a9306 4002 junk = SvPV(sv, len);
463ee0b2 4003 return len;
79072805
LW		 4004}
4005
c461cf8f
JH		 4006/*
4007=for apidoc sv_len_utf8
4008
4009Returns the number of characters in the string in an SV, counting wide
4010UTF8 bytes as a single character.
4011
4012=cut
4013*/
4014
a0ed51b3 4015STRLEN
864dbfa3 4016Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 4017{
dfe13c55
GS		 4018 U8 *s;
4019 U8 *send;
a0ed51b3
LW		 4020 STRLEN len;
4021
4022 if (!sv)
4023 return 0;
4024
4025#ifdef NOTYET
4026 if (SvGMAGICAL(sv))
4027 len = mg_length(sv);
4028 else
4029#endif
dfe13c55 4030 s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4031 send = s + len;
4032 len = 0;
4033 while (s < send) {
4034 s += UTF8SKIP(s);
4035 len++;
4036 }
4037 return len;
4038}
4039
4040void
864dbfa3 4041Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4042{
dfe13c55
GS		 4043 U8 *start;
4044 U8 *s;
4045 U8 *send;
a0ed51b3
LW		 4046 I32 uoffset = *offsetp;
4047 STRLEN len;
4048
4049 if (!sv)
4050 return;
4051
dfe13c55 4052 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4053 send = s + len;
4054 while (s < send && uoffset--)
4055 s += UTF8SKIP(s);
bb40f870
GA		 4056 if (s >= send)
4057 s = send;
a0ed51b3
LW		 4058 *offsetp = s - start;
4059 if (lenp) {
4060 I32 ulen = *lenp;
4061 start = s;
4062 while (s < send && ulen--)
4063 s += UTF8SKIP(s);
bb40f870
GA		 4064 if (s >= send)
4065 s = send;
a0ed51b3
LW		 4066 *lenp = s - start;
4067 }
4068 return;
4069}
4070
4071void
864dbfa3 4072Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4073{
dfe13c55
GS		 4074 U8 *s;
4075 U8 *send;
a0ed51b3
LW		 4076 STRLEN len;
4077
4078 if (!sv)
4079 return;
4080
dfe13c55 4081 s = (U8*)SvPV(sv, len);
a0ed51b3 4082 if (len < *offsetp)
cea2e8a9 4083 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4084 send = s + *offsetp;
4085 len = 0;
4086 while (s < send) {
4087 s += UTF8SKIP(s);
4088 ++len;
4089 }
4090 if (s != send) {
0453d815
PM		 4091 dTHR;
4092 if (ckWARN_d(WARN_UTF8))
4093 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4094 --len;
4095 }
4096 *offsetp = len;
4097 return;
4098}
4099
954c1994
GS		 4100/*
4101=for apidoc sv_eq
4102
4103Returns a boolean indicating whether the strings in the two SVs are
4104identical.
4105
4106=cut
4107*/
4108
79072805 4109I32
e01b9e88 4110Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4111{
4112 char *pv1;
463ee0b2 4113 STRLEN cur1;
79072805 4114 char *pv2;
463ee0b2 4115 STRLEN cur2;
e01b9e88
SC		 4116 I32 eq = 0;
4117 bool pv1tmp = FALSE;
4118 bool pv2tmp = FALSE;
79072805 4119
e01b9e88 4120 if (!sv1) {
79072805
LW		 4121 pv1 = "";
4122 cur1 = 0;
4123 }
463ee0b2 4124 else
e01b9e88 4125 pv1 = SvPV(sv1, cur1);
79072805 4126
e01b9e88
SC		 4127 if (!sv2){
4128 pv2 = "";
4129 cur2 = 0;
92d29cee 4130 }
e01b9e88
SC		 4131 else
4132 pv2 = SvPV(sv2, cur2);
79072805 4133
e01b9e88
SC		 4134 /* do not utf8ize the comparands as a side-effect */
4135 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE && 0) {
4136 if (SvUTF8(sv1)) {
4137 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4138 pv2tmp = TRUE;
4139 }
4140 else {
4141 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4142 pv1tmp = TRUE;
4143 }
4144 }
79072805 4145
e01b9e88
SC		 4146 if (cur1 == cur2)
4147 eq = memEQ(pv1, pv2, cur1);
4148
4149 if (pv1tmp)
4150 Safefree(pv1);
4151 if (pv2tmp)
4152 Safefree(pv2);
4153
4154 return eq;
79072805
LW		 4155}
4156
954c1994
GS		 4157/*
4158=for apidoc sv_cmp
4159
4160Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4161string in C<sv1> is less than, equal to, or greater than the string in
4162C<sv2>.
4163
4164=cut
4165*/
4166
79072805 4167I32
e01b9e88 4168Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4169{
560a288e
GS		 4170 STRLEN cur1, cur2;
4171 char *pv1, *pv2;
e01b9e88
SC		 4172 I32 cmp;
4173 bool pv1tmp = FALSE;
4174 bool pv2tmp = FALSE;
560a288e 4175
e01b9e88
SC		 4176 if (!sv1) {
4177 pv1 = "";
560a288e
GS		 4178 cur1 = 0;
4179 }
e01b9e88
SC		 4180 else
4181 pv1 = SvPV(sv1, cur1);
560a288e 4182
e01b9e88
SC		 4183 if (!sv2){
4184 pv2 = "";
560a288e
GS		 4185 cur2 = 0;
4186 }
e01b9e88
SC		 4187 else
4188 pv2 = SvPV(sv2, cur2);
79072805 4189
e01b9e88
SC		 4190 /* do not utf8ize the comparands as a side-effect */
4191 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4192 if (SvUTF8(sv1)) {
4193 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4194 pv2tmp = TRUE;
4195 }
4196 else {
4197 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4198 pv1tmp = TRUE;
4199 }
4200 }
79072805 4201
e01b9e88
SC		 4202 if (!cur1) {
4203 cmp = cur2 ? -1 : 0;
4204 } else if (!cur2) {
4205 cmp = 1;
4206 } else {
4207 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4208
4209 if (retval) {
4210 cmp = retval < 0 ? -1 : 1;
4211 } else if (cur1 == cur2) {
4212 cmp = 0;
4213 } else {
4214 cmp = cur1 < cur2 ? -1 : 1;
4215 }
4216 }
16660edb 4217
e01b9e88
SC		 4218 if (pv1tmp)
4219 Safefree(pv1);
4220 if (pv2tmp)
4221 Safefree(pv2);
16660edb 4222
e01b9e88 4223 return cmp;
bbce6d69 4224}
16660edb 4225
c461cf8f
JH		 4226/*
4227=for apidoc sv_cmp_locale
4228
4229Compares the strings in two SVs in a locale-aware manner. See
4230L</sv_cmp_locale>
4231
4232=cut
4233*/
4234
bbce6d69 4235I32
864dbfa3 4236Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4237{
36477c24 4238#ifdef USE_LOCALE_COLLATE
16660edb 4239
bbce6d69 4240 char *pv1, *pv2;
4241 STRLEN len1, len2;
4242 I32 retval;
16660edb 4243
3280af22 4244 if (PL_collation_standard)
bbce6d69 4245 goto raw_compare;
16660edb 4246
bbce6d69 4247 len1 = 0;
8ac85365 4248 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4249 len2 = 0;
8ac85365 4250 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4251
bbce6d69 4252 if (!pv1 || !len1) {
4253 if (pv2 && len2)
4254 return -1;
4255 else
4256 goto raw_compare;
4257 }
4258 else {
4259 if (!pv2 || !len2)
4260 return 1;
4261 }
16660edb 4262
bbce6d69 4263 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4264
bbce6d69 4265 if (retval)
16660edb 4266 return retval < 0 ? -1 : 1;
4267
bbce6d69 4268 /*
4269 * When the result of collation is equality, that doesn't mean
4270 * that there are no differences -- some locales exclude some
4271 * characters from consideration. So to avoid false equalities,
4272 * we use the raw string as a tiebreaker.
4273 */
16660edb 4274
bbce6d69 4275 raw_compare:
4276 /* FALL THROUGH */
16660edb 4277
36477c24 4278#endif /* USE_LOCALE_COLLATE */
16660edb 4279
bbce6d69 4280 return sv_cmp(sv1, sv2);
4281}
79072805 4282
36477c24 4283#ifdef USE_LOCALE_COLLATE
7a4c00b4 4284/*
4285 * Any scalar variable may carry an 'o' magic that contains the
4286 * scalar data of the variable transformed to such a format that
4287 * a normal memory comparison can be used to compare the data
4288 * according to the locale settings.
4289 */
bbce6d69 4290char *
864dbfa3 4291Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4292{
7a4c00b4 4293 MAGIC *mg;
16660edb 4294
8ac85365 4295 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4296 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4297 char *s, *xf;
4298 STRLEN len, xlen;
4299
7a4c00b4 4300 if (mg)
4301 Safefree(mg->mg_ptr);
bbce6d69 4302 s = SvPV(sv, len);
4303 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4304 if (SvREADONLY(sv)) {
4305 SAVEFREEPV(xf);
4306 *nxp = xlen;
3280af22 4307 return xf + sizeof(PL_collation_ix);
ff0cee69 4308 }
7a4c00b4 4309 if (! mg) {
4310 sv_magic(sv, 0, 'o', 0, 0);
4311 mg = mg_find(sv, 'o');
4312 assert(mg);
bbce6d69 4313 }
7a4c00b4 4314 mg->mg_ptr = xf;
565764a8 4315 mg->mg_len = xlen;
7a4c00b4 4316 }
4317 else {
ff0cee69 4318 if (mg) {
4319 mg->mg_ptr = NULL;
565764a8 4320 mg->mg_len = -1;
ff0cee69 4321 }
bbce6d69 4322 }
4323 }
7a4c00b4 4324 if (mg && mg->mg_ptr) {
565764a8 4325 *nxp = mg->mg_len;
3280af22 4326 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4327 }
4328 else {
4329 *nxp = 0;
4330 return NULL;
16660edb 4331 }
79072805
LW		 4332}
4333
36477c24 4334#endif /* USE_LOCALE_COLLATE */
bbce6d69 4335
c461cf8f
JH		 4336/*
4337=for apidoc sv_gets
4338
4339Get a line from the filehandle and store it into the SV, optionally
4340appending to the currently-stored string.
4341
4342=cut
4343*/
4344
79072805 4345char *
864dbfa3 4346Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4347{
aeea060c 4348 dTHR;
c07a80fd 4349 char *rsptr;
4350 STRLEN rslen;
4351 register STDCHAR rslast;
4352 register STDCHAR *bp;
4353 register I32 cnt;
4354 I32 i;
4355
2213622d 4356 SV_CHECK_THINKFIRST(sv);
6fc92669 4357 (void)SvUPGRADE(sv, SVt_PV);
99491443 4358
ff68c719 4359 SvSCREAM_off(sv);
c07a80fd 4360
3280af22 4361 if (RsSNARF(PL_rs)) {
c07a80fd 4362 rsptr = NULL;
4363 rslen = 0;
4364 }
3280af22 4365 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4366 I32 recsize, bytesread;
4367 char *buffer;
4368
4369 /* Grab the size of the record we're getting */
3280af22 4370 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4371 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4372 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4373 /* Go yank in */
4374#ifdef VMS
4375 /* VMS wants read instead of fread, because fread doesn't respect */
4376 /* RMS record boundaries. This is not necessarily a good thing to be */
4377 /* doing, but we've got no other real choice */
4378 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4379#else
4380 bytesread = PerlIO_read(fp, buffer, recsize);
4381#endif
4382 SvCUR_set(sv, bytesread);
e670df4e 4383 buffer[bytesread] = '\0';
5b2b9c68
HM		 4384 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4385 }
3280af22 4386 else if (RsPARA(PL_rs)) {
c07a80fd 4387 rsptr = "\n\n";
4388 rslen = 2;
4389 }
4390 else
3280af22 4391 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4392 rslast = rslen ? rsptr[rslen - 1] : '\0';
4393
3280af22 4394 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4395 do { /* to make sure file boundaries work right */
760ac839 4396 if (PerlIO_eof(fp))
a0d0e21e 4397 return 0;
760ac839 4398 i = PerlIO_getc(fp);
79072805 4399 if (i != '\n') {
a0d0e21e
LW		 4400 if (i == -1)
4401 return 0;
760ac839 4402 PerlIO_ungetc(fp,i);
79072805
LW		 4403 break;
4404 }
4405 } while (i != EOF);
4406 }
c07a80fd 4407
760ac839
LW		 4408 /* See if we know enough about I/O mechanism to cheat it ! */
4409
4410 /* This used to be #ifdef test - it is made run-time test for ease
4411 of abstracting out stdio interface. One call should be cheap
4412 enough here - and may even be a macro allowing compile
4413 time optimization.
4414 */
4415
4416 if (PerlIO_fast_gets(fp)) {
4417
4418 /*
4419 * We're going to steal some values from the stdio struct
4420 * and put EVERYTHING in the innermost loop into registers.
4421 */
4422 register STDCHAR *ptr;
4423 STRLEN bpx;
4424 I32 shortbuffered;
4425
16660edb 4426#if defined(VMS) && defined(PERLIO_IS_STDIO)
4427 /* An ungetc()d char is handled separately from the regular
4428 * buffer, so we getc() it back out and stuff it in the buffer.
4429 */
4430 i = PerlIO_getc(fp);
4431 if (i == EOF) return 0;
4432 *(--((*fp)->_ptr)) = (unsigned char) i;
4433 (*fp)->_cnt++;
4434#endif
c07a80fd 4435
c2960299 4436 /* Here is some breathtakingly efficient cheating */
c07a80fd 4437
a20bf0c3 4438 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4439 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4440 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4441 if (cnt > 80 && SvLEN(sv) > append) {
4442 shortbuffered = cnt - SvLEN(sv) + append + 1;
4443 cnt -= shortbuffered;
4444 }
4445 else {
4446 shortbuffered = 0;
bbce6d69 4447 /* remember that cnt can be negative */
4448 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4449 }
4450 }
4451 else
4452 shortbuffered = 0;
c07a80fd 4453 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4454 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4455 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4456 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4457 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4458 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4459 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4460 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4461 for (;;) {
4462 screamer:
93a17b20 4463 if (cnt > 0) {
c07a80fd 4464 if (rslen) {
760ac839
LW		 4465 while (cnt > 0) { /* this | eat */
4466 cnt--;
c07a80fd 4467 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4468 goto thats_all_folks; /* screams | sed :-) */
4469 }
4470 }
4471 else {
36477c24 4472 Copy(ptr, bp, cnt, char); /* this | eat */
c07a80fd 4473 bp += cnt; /* screams | dust */
4474 ptr += cnt; /* louder | sed :-) */
a5f75d66 4475 cnt = 0;
93a17b20 4476 }
79072805
LW		 4477 }
4478
748a9306 4479 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4480 cnt = shortbuffered;
4481 shortbuffered = 0;
c07a80fd 4482 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4483 SvCUR_set(sv, bpx);
4484 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4485 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4486 continue;
4487 }
4488
16660edb 4489 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4490 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4491 PTR2UV(ptr),(long)cnt));
a20bf0c3 4492 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4493 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4494 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4495 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4496 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
16660edb 4497 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4498 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4499 another abstraction. */
760ac839 4500 i = PerlIO_getc(fp); /* get more characters */
16660edb 4501 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4502 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4503 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4504 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4505 cnt = PerlIO_get_cnt(fp);
4506 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4507 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4508 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4509
748a9306
LW		 4510 if (i == EOF) /* all done for ever? */
4511 goto thats_really_all_folks;
4512
c07a80fd 4513 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4514 SvCUR_set(sv, bpx);
4515 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4516 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4517
760ac839 4518 *bp++ = i; /* store character from PerlIO_getc */
79072805 4519
c07a80fd 4520 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4521 goto thats_all_folks;
79072805
LW		 4522 }
4523
4524thats_all_folks:
c07a80fd 4525 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4526 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4527 goto screamer; /* go back to the fray */
79072805
LW		 4528thats_really_all_folks:
4529 if (shortbuffered)
4530 cnt += shortbuffered;
16660edb 4531 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4532 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4533 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4534 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4535 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4536 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4537 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4538 *bp = '\0';
760ac839 4539 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4540 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4541 "Screamer: done, len=%ld, string=|%.*s|\n",
4542 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4543 }
4544 else
79072805 4545 {
4d2c4e07 4546#ifndef EPOC
760ac839 4547 /*The big, slow, and stupid way */
c07a80fd 4548 STDCHAR buf[8192];
4d2c4e07
OF		 4549#else
4550 /* Need to work around EPOC SDK features */
4551 /* On WINS: MS VC5 generates calls to _chkstk, */
4552 /* if a `large' stack frame is allocated */
4553 /* gcc on MARM does not generate calls like these */
4554 STDCHAR buf[1024];
4555#endif
79072805 4556
760ac839 4557screamer2:
c07a80fd 4558 if (rslen) {
760ac839
LW		 4559 register STDCHAR *bpe = buf + sizeof(buf);
4560 bp = buf;
4561 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4562 ; /* keep reading */
4563 cnt = bp - buf;
c07a80fd 4564 }
4565 else {
760ac839 4566 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4567 /* Accomodate broken VAXC compiler, which applies U8 cast to
4568 * both args of ?: operator, causing EOF to change into 255
4569 */
4570 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4571 }
79072805
LW		 4572
4573 if (append)
760ac839 4574 sv_catpvn(sv, (char *) buf, cnt);
79072805 4575 else
760ac839 4576 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4577
4578 if (i != EOF && /* joy */
4579 (!rslen ||
4580 SvCUR(sv) < rslen ||
36477c24 4581 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4582 {
4583 append = -1;
63e4d877
CS		 4584 /*
4585 * If we're reading from a TTY and we get a short read,
4586 * indicating that the user hit his EOF character, we need
4587 * to notice it now, because if we try to read from the TTY
4588 * again, the EOF condition will disappear.
4589 *
4590 * The comparison of cnt to sizeof(buf) is an optimization
4591 * that prevents unnecessary calls to feof().
4592 *
4593 * - jik 9/25/96
4594 */
4595 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4596 goto screamer2;
79072805
LW		 4597 }
4598 }
4599
3280af22 4600 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4601 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4602 i = PerlIO_getc(fp);
79072805 4603 if (i != '\n') {
760ac839 4604 PerlIO_ungetc(fp,i);
79072805
LW		 4605 break;
4606 }
4607 }
4608 }
c07a80fd 4609
4610 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4611}
4612
760ac839 4613
954c1994
GS		 4614/*
4615=for apidoc sv_inc
4616
4617Auto-increment of the value in the SV.
4618
4619=cut
4620*/
4621
79072805 4622void
864dbfa3 4623Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4624{
4625 register char *d;
463ee0b2 4626 int flags;
79072805
LW		 4627
4628 if (!sv)
4629 return;
b23a5f78
GB		 4630 if (SvGMAGICAL(sv))
4631 mg_get(sv);
ed6116ce 4632 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4633 if (SvREADONLY(sv)) {
4634 dTHR;
3280af22 4635 if (PL_curcop != &PL_compiling)
cea2e8a9 4636 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4637 }
a0d0e21e 4638 if (SvROK(sv)) {
b5be31e9 4639 IV i;
9e7bc3e8
JD		 4640 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4641 return;
56431972 4642 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4643 sv_unref(sv);
4644 sv_setiv(sv, i);
a0d0e21e 4645 }
ed6116ce 4646 }
8990e307 4647 flags = SvFLAGS(sv);
8990e307 4648 if (flags & SVp_NOK) {
a0d0e21e 4649 (void)SvNOK_only(sv);
55497cff 4650 SvNVX(sv) += 1.0;
4651 return;
4652 }
4653 if (flags & SVp_IOK) {
25da4f38
IZ		 4654 if (SvIsUV(sv)) {
4655 if (SvUVX(sv) == UV_MAX)
65202027 4656 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4657 else
4658 (void)SvIOK_only_UV(sv);
4659 ++SvUVX(sv);
4660 } else {
4661 if (SvIVX(sv) == IV_MAX)
65202027 4662 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4663 else {
4664 (void)SvIOK_only(sv);
4665 ++SvIVX(sv);
4666 }
55497cff 4667 }
79072805
LW		 4668 return;
4669 }
8990e307 4670 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4671 if ((flags & SVTYPEMASK) < SVt_PVNV)
4672 sv_upgrade(sv, SVt_NV);
463ee0b2 4673 SvNVX(sv) = 1.0;
a0d0e21e 4674 (void)SvNOK_only(sv);
79072805
LW		 4675 return;
4676 }
463ee0b2 4677 d = SvPVX(sv);
79072805
LW		 4678 while (isALPHA(*d)) d++;
4679 while (isDIGIT(*d)) d++;
4680 if (*d) {
097ee67d 4681 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4682 return;
4683 }
4684 d--;
463ee0b2 4685 while (d >= SvPVX(sv)) {
79072805
LW		 4686 if (isDIGIT(*d)) {
4687 if (++*d <= '9')
4688 return;
4689 *(d--) = '0';
4690 }
4691 else {
9d116dd7
JH		 4692#ifdef EBCDIC
4693 /* MKS: The original code here died if letters weren't consecutive.
4694 * at least it didn't have to worry about non-C locales. The
4695 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4696 * arranged in order (although not consecutively) and that only
4697 * [A-Za-z] are accepted by isALPHA in the C locale.
4698 */
4699 if (*d != 'z' && *d != 'Z') {
4700 do { ++*d; } while (!isALPHA(*d));
4701 return;
4702 }
4703 *(d--) -= 'z' - 'a';
4704#else
79072805
LW		 4705 ++*d;
4706 if (isALPHA(*d))
4707 return;
4708 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4709#endif
79072805
LW		 4710 }
4711 }
4712 /* oh,oh, the number grew */
4713 SvGROW(sv, SvCUR(sv) + 2);
4714 SvCUR(sv)++;
463ee0b2 4715 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4716 *d = d[-1];
4717 if (isDIGIT(d[1]))
4718 *d = '1';
4719 else
4720 *d = d[1];
4721}
4722
954c1994
GS		 4723/*
4724=for apidoc sv_dec
4725
4726Auto-decrement of the value in the SV.
4727
4728=cut
4729*/
4730
79072805 4731void
864dbfa3 4732Perl_sv_dec(pTHX_ register SV *sv)
79072805 4733{
463ee0b2
LW		 4734 int flags;
4735
79072805
LW		 4736 if (!sv)
4737 return;
b23a5f78
GB		 4738 if (SvGMAGICAL(sv))
4739 mg_get(sv);
ed6116ce 4740 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4741 if (SvREADONLY(sv)) {
4742 dTHR;
3280af22 4743 if (PL_curcop != &PL_compiling)
cea2e8a9 4744 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4745 }
a0d0e21e 4746 if (SvROK(sv)) {
b5be31e9 4747 IV i;
9e7bc3e8
JD		 4748 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4749 return;
56431972 4750 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4751 sv_unref(sv);
4752 sv_setiv(sv, i);
a0d0e21e 4753 }
ed6116ce 4754 }
8990e307 4755 flags = SvFLAGS(sv);
8990e307 4756 if (flags & SVp_NOK) {
463ee0b2 4757 SvNVX(sv) -= 1.0;
a0d0e21e 4758 (void)SvNOK_only(sv);
79072805
LW		 4759 return;
4760 }
55497cff 4761 if (flags & SVp_IOK) {
25da4f38
IZ		 4762 if (SvIsUV(sv)) {
4763 if (SvUVX(sv) == 0) {
4764 (void)SvIOK_only(sv);
4765 SvIVX(sv) = -1;
4766 }
4767 else {
4768 (void)SvIOK_only_UV(sv);
4769 --SvUVX(sv);
4770 }
4771 } else {
4772 if (SvIVX(sv) == IV_MIN)
65202027 4773 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4774 else {
4775 (void)SvIOK_only(sv);
4776 --SvIVX(sv);
4777 }
55497cff 4778 }
4779 return;
4780 }
8990e307 4781 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4782 if ((flags & SVTYPEMASK) < SVt_PVNV)
4783 sv_upgrade(sv, SVt_NV);
463ee0b2 4784 SvNVX(sv) = -1.0;
a0d0e21e 4785 (void)SvNOK_only(sv);
79072805
LW		 4786 return;
4787 }
097ee67d 4788 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4789}
4790
954c1994
GS		 4791/*
4792=for apidoc sv_mortalcopy
4793
4794Creates a new SV which is a copy of the original SV. The new SV is marked
4795as mortal.
4796
4797=cut
4798*/
4799
79072805
LW		 4800/* Make a string that will exist for the duration of the expression
4801 * evaluation. Actually, it may have to last longer than that, but
4802 * hopefully we won't free it until it has been assigned to a
4803 * permanent location. */
4804
4805SV *
864dbfa3 4806Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4807{
11343788 4808 dTHR;
463ee0b2 4809 register SV *sv;
79072805 4810
4561caa4 4811 new_SV(sv);
79072805 4812 sv_setsv(sv,oldstr);
677b06e3
GS		 4813 EXTEND_MORTAL(1);
4814 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4815 SvTEMP_on(sv);
4816 return sv;
4817}
4818
954c1994
GS		 4819/*
4820=for apidoc sv_newmortal
4821
4822Creates a new SV which is mortal. The reference count of the SV is set to 1.
4823
4824=cut
4825*/
4826
8990e307 4827SV *
864dbfa3 4828Perl_sv_newmortal(pTHX)
8990e307 4829{
11343788 4830 dTHR;
8990e307
LW		 4831 register SV *sv;
4832
4561caa4 4833 new_SV(sv);
8990e307 4834 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4835 EXTEND_MORTAL(1);
4836 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4837 return sv;
4838}
4839
954c1994
GS		 4840/*
4841=for apidoc sv_2mortal
4842
4843Marks an SV as mortal. The SV will be destroyed when the current context
4844ends.
4845
4846=cut
4847*/
4848
79072805
LW		 4849/* same thing without the copying */
4850
4851SV *
864dbfa3 4852Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4853{
11343788 4854 dTHR;
79072805
LW		 4855 if (!sv)
4856 return sv;
d689ffdd 4857 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4858 return sv;
677b06e3
GS		 4859 EXTEND_MORTAL(1);
4860 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4861 SvTEMP_on(sv);
79072805
LW		 4862 return sv;
4863}
4864
954c1994
GS		 4865/*
4866=for apidoc newSVpv
4867
4868Creates a new SV and copies a string into it. The reference count for the
4869SV is set to 1. If C<len> is zero, Perl will compute the length using
4870strlen(). For efficiency, consider using C<newSVpvn> instead.
4871
4872=cut
4873*/
4874
79072805 4875SV *
864dbfa3 4876Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4877{
463ee0b2 4878 register SV *sv;
79072805 4879
4561caa4 4880 new_SV(sv);
79072805
LW		 4881 if (!len)
4882 len = strlen(s);
4883 sv_setpvn(sv,s,len);
4884 return sv;
4885}
4886
954c1994
GS		 4887/*
4888=for apidoc newSVpvn
4889
4890Creates a new SV and copies a string into it. The reference count for the
4891SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4892string. You are responsible for ensuring that the source string is at least
4893C<len> bytes long.
4894
4895=cut
4896*/
4897
9da1e3b5 4898SV *
864dbfa3 4899Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4900{
4901 register SV *sv;
4902
4903 new_SV(sv);
9da1e3b5
MUN		 4904 sv_setpvn(sv,s,len);
4905 return sv;
4906}
4907
cea2e8a9 4908#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4909SV *
cea2e8a9 4910Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4911{
cea2e8a9 4912 dTHX;
46fc3d4c 4913 register SV *sv;
4914 va_list args;
46fc3d4c 4915 va_start(args, pat);
c5be433b 4916 sv = vnewSVpvf(pat, &args);
46fc3d4c 4917 va_end(args);
4918 return sv;
4919}
cea2e8a9 4920#endif
46fc3d4c 4921
954c1994
GS		 4922/*
4923=for apidoc newSVpvf
4924
4925Creates a new SV an initialize it with the string formatted like
4926C<sprintf>.
4927
4928=cut
4929*/
4930
cea2e8a9
GS		 4931SV *
4932Perl_newSVpvf(pTHX_ const char* pat, ...)
4933{
4934 register SV *sv;
4935 va_list args;
cea2e8a9 4936 va_start(args, pat);
c5be433b 4937 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4938 va_end(args);
4939 return sv;
4940}
46fc3d4c 4941
79072805 4942SV *
c5be433b
GS		 4943Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4944{
4945 register SV *sv;
4946 new_SV(sv);
4947 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4948 return sv;
4949}
4950
954c1994
GS		 4951/*
4952=for apidoc newSVnv
4953
4954Creates a new SV and copies a floating point value into it.
4955The reference count for the SV is set to 1.
4956
4957=cut
4958*/
4959
c5be433b 4960SV *
65202027 4961Perl_newSVnv(pTHX_ NV n)
79072805 4962{
463ee0b2 4963 register SV *sv;
79072805 4964
4561caa4 4965 new_SV(sv);
79072805
LW		 4966 sv_setnv(sv,n);
4967 return sv;
4968}
4969
954c1994
GS		 4970/*
4971=for apidoc newSViv
4972
4973Creates a new SV and copies an integer into it. The reference count for the
4974SV is set to 1.
4975
4976=cut
4977*/
4978
79072805 4979SV *
864dbfa3 4980Perl_newSViv(pTHX_ IV i)
79072805 4981{
463ee0b2 4982 register SV *sv;
79072805 4983
4561caa4 4984 new_SV(sv);
79072805
LW		 4985 sv_setiv(sv,i);
4986 return sv;
4987}
4988
954c1994 4989/*
1a3327fb
JH		 4990=for apidoc newSVuv
4991
4992Creates a new SV and copies an unsigned integer into it.
4993The reference count for the SV is set to 1.
4994
4995=cut
4996*/
4997
4998SV *
4999Perl_newSVuv(pTHX_ UV u)
5000{
5001 register SV *sv;
5002
5003 new_SV(sv);
5004 sv_setuv(sv,u);
5005 return sv;
5006}
5007
5008/*
954c1994
GS		 5009=for apidoc newRV_noinc
5010
5011Creates an RV wrapper for an SV. The reference count for the original
5012SV is B<not> incremented.
5013
5014=cut
5015*/
5016
2304df62 5017SV *
864dbfa3 5018Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5019{
11343788 5020 dTHR;
2304df62
AD		 5021 register SV *sv;
5022
4561caa4 5023 new_SV(sv);
2304df62 5024 sv_upgrade(sv, SVt_RV);
76e3520e 5025 SvTEMP_off(tmpRef);
d689ffdd 5026 SvRV(sv) = tmpRef;
2304df62 5027 SvROK_on(sv);
2304df62
AD		 5028 return sv;
5029}
5030
954c1994 5031/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5032SV *
864dbfa3 5033Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5034{
5f6447b6 5035 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5036}
5f05dabc 5037
954c1994
GS		 5038/*
5039=for apidoc newSVsv
5040
5041Creates a new SV which is an exact duplicate of the original SV.
5042
5043=cut
5044*/
5045
79072805
LW		 5046/* make an exact duplicate of old */
5047
5048SV *
864dbfa3 5049Perl_newSVsv(pTHX_ register SV *old)
79072805 5050{
0453d815 5051 dTHR;
463ee0b2 5052 register SV *sv;
79072805
LW		 5053
5054 if (!old)
5055 return Nullsv;
8990e307 5056 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5057 if (ckWARN_d(WARN_INTERNAL))
5058 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5059 return Nullsv;
5060 }
4561caa4 5061 new_SV(sv);
ff68c719 5062 if (SvTEMP(old)) {
5063 SvTEMP_off(old);
463ee0b2 5064 sv_setsv(sv,old);
ff68c719 5065 SvTEMP_on(old);
79072805
LW		 5066 }
5067 else
463ee0b2
LW		 5068 sv_setsv(sv,old);
5069 return sv;
79072805
LW		 5070}
5071
5072void
864dbfa3 5073Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5074{
5075 register HE *entry;
5076 register GV *gv;
5077 register SV *sv;
5078 register I32 i;
5079 register PMOP *pm;
5080 register I32 max;
4802d5d7 5081 char todo[PERL_UCHAR_MAX+1];
79072805 5082
49d8d3a1
MB		 5083 if (!stash)
5084 return;
5085
79072805
LW		 5086 if (!*s) { /* reset ?? searches */
5087 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5088 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5089 }
5090 return;
5091 }
5092
5093 /* reset variables */
5094
5095 if (!HvARRAY(stash))
5096 return;
463ee0b2
LW		 5097
5098 Zero(todo, 256, char);
79072805 5099 while (*s) {
4802d5d7 5100 i = (unsigned char)*s;
79072805
LW		 5101 if (s[1] == '-') {
5102 s += 2;
5103 }
4802d5d7 5104 max = (unsigned char)*s++;
79072805 5105 for ( ; i <= max; i++) {
463ee0b2
LW		 5106 todo[i] = 1;
5107 }
a0d0e21e 5108 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5109 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5110 entry;
5111 entry = HeNEXT(entry))
5112 {
1edc1566 5113 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5114 continue;
1edc1566 5115 gv = (GV*)HeVAL(entry);
79072805 5116 sv = GvSV(gv);
9e35f4b3
GS		 5117 if (SvTHINKFIRST(sv)) {
5118 if (!SvREADONLY(sv) && SvROK(sv))
5119 sv_unref(sv);
5120 continue;
5121 }
a0d0e21e 5122 (void)SvOK_off(sv);
79072805
LW		 5123 if (SvTYPE(sv) >= SVt_PV) {
5124 SvCUR_set(sv, 0);
463ee0b2
LW		 5125 if (SvPVX(sv) != Nullch)
5126 *SvPVX(sv) = '\0';
44a8e56a 5127 SvTAINT(sv);
79072805
LW		 5128 }
5129 if (GvAV(gv)) {
5130 av_clear(GvAV(gv));
5131 }
44a8e56a 5132 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5133 hv_clear(GvHV(gv));
a0d0e21e 5134#ifndef VMS /* VMS has no environ array */
3280af22 5135 if (gv == PL_envgv)
79072805 5136 environ[0] = Nullch;
a0d0e21e 5137#endif
79072805
LW		 5138 }
5139 }
5140 }
5141 }
5142}
5143
46fc3d4c 5144IO*
864dbfa3 5145Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5146{
5147 IO* io;
5148 GV* gv;
2d8e6c8d 5149 STRLEN n_a;
46fc3d4c 5150
5151 switch (SvTYPE(sv)) {
5152 case SVt_PVIO:
5153 io = (IO*)sv;
5154 break;
5155 case SVt_PVGV:
5156 gv = (GV*)sv;
5157 io = GvIO(gv);
5158 if (!io)
cea2e8a9 5159 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5160 break;
5161 default:
5162 if (!SvOK(sv))
cea2e8a9 5163 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5164 if (SvROK(sv))
5165 return sv_2io(SvRV(sv));
2d8e6c8d 5166 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5167 if (gv)
5168 io = GvIO(gv);
5169 else
5170 io = 0;
5171 if (!io)
cea2e8a9 5172 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5173 break;
5174 }
5175 return io;
5176}
5177
79072805 5178CV *
864dbfa3 5179Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5180{
5181 GV *gv;
5182 CV *cv;
2d8e6c8d 5183 STRLEN n_a;
79072805
LW		 5184
5185 if (!sv)
93a17b20 5186 return *gvp = Nullgv, Nullcv;
79072805 5187 switch (SvTYPE(sv)) {
79072805
LW		 5188 case SVt_PVCV:
5189 *st = CvSTASH(sv);
5190 *gvp = Nullgv;
5191 return (CV*)sv;
5192 case SVt_PVHV:
5193 case SVt_PVAV:
5194 *gvp = Nullgv;
5195 return Nullcv;
8990e307
LW		 5196 case SVt_PVGV:
5197 gv = (GV*)sv;
a0d0e21e 5198 *gvp = gv;
8990e307
LW		 5199 *st = GvESTASH(gv);
5200 goto fix_gv;
5201
79072805 5202 default:
a0d0e21e
LW		 5203 if (SvGMAGICAL(sv))
5204 mg_get(sv);
5205 if (SvROK(sv)) {
0f4592ef 5206 dTHR;
f5284f61
IZ		 5207 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5208 tryAMAGICunDEREF(to_cv);
5209
62f274bf
GS		 5210 sv = SvRV(sv);
5211 if (SvTYPE(sv) == SVt_PVCV) {
5212 cv = (CV*)sv;
5213 *gvp = Nullgv;
5214 *st = CvSTASH(cv);
5215 return cv;
5216 }
5217 else if(isGV(sv))
5218 gv = (GV*)sv;
5219 else
cea2e8a9 5220 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5221 }
62f274bf 5222 else if (isGV(sv))
79072805
LW		 5223 gv = (GV*)sv;
5224 else
2d8e6c8d 5225 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5226 *gvp = gv;
5227 if (!gv)
5228 return Nullcv;
5229 *st = GvESTASH(gv);
8990e307 5230 fix_gv:
8ebc5c01 5231 if (lref && !GvCVu(gv)) {
4633a7c4 5232 SV *tmpsv;
748a9306 5233 ENTER;
4633a7c4 5234 tmpsv = NEWSV(704,0);
16660edb 5235 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5236 /* XXX this is probably not what they think they're getting.
5237 * It has the same effect as "sub name;", i.e. just a forward
5238 * declaration! */
774d564b 5239 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5240 newSVOP(OP_CONST, 0, tmpsv),
5241 Nullop,
8990e307 5242 Nullop);
748a9306 5243 LEAVE;
8ebc5c01 5244 if (!GvCVu(gv))
cea2e8a9 5245 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5246 }
8ebc5c01 5247 return GvCVu(gv);
79072805
LW		 5248 }
5249}
5250
c461cf8f
JH		 5251/*
5252=for apidoc sv_true
5253
5254Returns true if the SV has a true value by Perl's rules.
5255
5256=cut
5257*/
5258
79072805 5259I32
864dbfa3 5260Perl_sv_true(pTHX_ register SV *sv)
79072805 5261{
4e35701f 5262 dTHR;
8990e307
LW		 5263 if (!sv)
5264 return 0;
79072805 5265 if (SvPOK(sv)) {
4e35701f
NIS		 5266 register XPV* tXpv;
5267 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5268 (tXpv->xpv_cur > 1 ||
4e35701f 5269 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5270 return 1;
5271 else
5272 return 0;
5273 }
5274 else {
5275 if (SvIOK(sv))
463ee0b2 5276 return SvIVX(sv) != 0;
79072805
LW		 5277 else {
5278 if (SvNOK(sv))
463ee0b2 5279 return SvNVX(sv) != 0.0;
79072805 5280 else
463ee0b2 5281 return sv_2bool(sv);
79072805
LW		 5282 }
5283 }
5284}
79072805 5285
ff68c719 5286IV
864dbfa3 5287Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5288{
25da4f38
IZ		 5289 if (SvIOK(sv)) {
5290 if (SvIsUV(sv))
5291 return (IV)SvUVX(sv);
ff68c719 5292 return SvIVX(sv);
25da4f38 5293 }
ff68c719 5294 return sv_2iv(sv);
85e6fe83 5295}
85e6fe83 5296
ff68c719 5297UV
864dbfa3 5298Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5299{
25da4f38
IZ		 5300 if (SvIOK(sv)) {
5301 if (SvIsUV(sv))
5302 return SvUVX(sv);
5303 return (UV)SvIVX(sv);
5304 }
ff68c719 5305 return sv_2uv(sv);
5306}
85e6fe83 5307
65202027 5308NV
864dbfa3 5309Perl_sv_nv(pTHX_ register SV *sv)
79072805 5310{
ff68c719 5311 if (SvNOK(sv))
5312 return SvNVX(sv);
5313 return sv_2nv(sv);
79072805 5314}
79072805 5315
79072805 5316char *
864dbfa3 5317Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5318{
5319 STRLEN n_a;
5320
5321 if (SvPOK(sv))
5322 return SvPVX(sv);
5323
5324 return sv_2pv(sv, &n_a);
5325}
5326
5327char *
864dbfa3 5328Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5329{
85e6fe83
LW		 5330 if (SvPOK(sv)) {
5331 *lp = SvCUR(sv);
a0d0e21e 5332 return SvPVX(sv);
85e6fe83 5333 }
463ee0b2 5334 return sv_2pv(sv, lp);
79072805 5335}
79072805 5336
c461cf8f
JH		 5337/*
5338=for apidoc sv_pvn_force
5339
5340Get a sensible string out of the SV somehow.
5341
5342=cut
5343*/
5344
a0d0e21e 5345char *
864dbfa3 5346Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5347{
5348 char *s;
5349
6fc92669
GS		 5350 if (SvTHINKFIRST(sv) && !SvROK(sv))
5351 sv_force_normal(sv);
a0d0e21e
LW		 5352
5353 if (SvPOK(sv)) {
5354 *lp = SvCUR(sv);
5355 }
5356 else {
748a9306 5357 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5358 dTHR;
cea2e8a9 5359 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5360 PL_op_name[PL_op->op_type]);
a0d0e21e 5361 }
4633a7c4
LW		 5362 else
5363 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5364 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5365 STRLEN len = *lp;
5366
5367 if (SvROK(sv))
5368 sv_unref(sv);
5369 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5370 SvGROW(sv, len + 1);
5371 Move(s,SvPVX(sv),len,char);
5372 SvCUR_set(sv, len);
5373 *SvEND(sv) = '\0';
5374 }
5375 if (!SvPOK(sv)) {
5376 SvPOK_on(sv); /* validate pointer */
5377 SvTAINT(sv);
1d7c1841
GS		 5378 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5379 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5380 }
5381 }
5382 return SvPVX(sv);
5383}
5384
5385char *
7340a771
GS		 5386Perl_sv_pvbyte(pTHX_ SV *sv)
5387{
5388 return sv_pv(sv);
5389}
5390
5391char *
5392Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5393{
5394 return sv_pvn(sv,lp);
5395}
5396
5397char *
5398Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5399{
5400 return sv_pvn_force(sv,lp);
5401}
5402
5403char *
5404Perl_sv_pvutf8(pTHX_ SV *sv)
5405{
560a288e 5406 sv_utf8_upgrade(sv);
7340a771
GS		 5407 return sv_pv(sv);
5408}
5409
5410char *
5411Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5412{
560a288e 5413 sv_utf8_upgrade(sv);
7340a771
GS		 5414 return sv_pvn(sv,lp);
5415}
5416
c461cf8f
JH		 5417/*
5418=for apidoc sv_pvutf8n_force
5419
5420Get a sensible UTF8-encoded string out of the SV somehow. See
5421L</sv_pvn_force>.
5422
5423=cut
5424*/
5425
7340a771
GS		 5426char *
5427Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5428{
560a288e 5429 sv_utf8_upgrade(sv);
7340a771
GS		 5430 return sv_pvn_force(sv,lp);
5431}
5432
c461cf8f
JH		 5433/*
5434=for apidoc sv_reftype
5435
5436Returns a string describing what the SV is a reference to.
5437
5438=cut
5439*/
5440
7340a771 5441char *
864dbfa3 5442Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5443{
5444 if (ob && SvOBJECT(sv))
5445 return HvNAME(SvSTASH(sv));
5446 else {
5447 switch (SvTYPE(sv)) {
5448 case SVt_NULL:
5449 case SVt_IV:
5450 case SVt_NV:
5451 case SVt_RV:
5452 case SVt_PV:
5453 case SVt_PVIV:
5454 case SVt_PVNV:
5455 case SVt_PVMG:
5456 case SVt_PVBM:
5457 if (SvROK(sv))
5458 return "REF";
5459 else
5460 return "SCALAR";
5461 case SVt_PVLV: return "LVALUE";
5462 case SVt_PVAV: return "ARRAY";
5463 case SVt_PVHV: return "HASH";
5464 case SVt_PVCV: return "CODE";
5465 case SVt_PVGV: return "GLOB";
1d2dff63 5466 case SVt_PVFM: return "FORMAT";
27f9d8f3 5467 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5468 default: return "UNKNOWN";
5469 }
5470 }
5471}
5472
954c1994
GS		 5473/*
5474=for apidoc sv_isobject
5475
5476Returns a boolean indicating whether the SV is an RV pointing to a blessed
5477object. If the SV is not an RV, or if the object is not blessed, then this
5478will return false.
5479
5480=cut
5481*/
5482
463ee0b2 5483int
864dbfa3 5484Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5485{
68dc0745 5486 if (!sv)
5487 return 0;
5488 if (SvGMAGICAL(sv))
5489 mg_get(sv);
85e6fe83
LW		 5490 if (!SvROK(sv))
5491 return 0;
5492 sv = (SV*)SvRV(sv);
5493 if (!SvOBJECT(sv))
5494 return 0;
5495 return 1;
5496}
5497
954c1994
GS		 5498/*
5499=for apidoc sv_isa
5500
5501Returns a boolean indicating whether the SV is blessed into the specified
5502class. This does not check for subtypes; use C<sv_derived_from> to verify
5503an inheritance relationship.
5504
5505=cut
5506*/
5507
85e6fe83 5508int
864dbfa3 5509Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5510{
68dc0745 5511 if (!sv)
5512 return 0;
5513 if (SvGMAGICAL(sv))
5514 mg_get(sv);
ed6116ce 5515 if (!SvROK(sv))
463ee0b2 5516 return 0;
ed6116ce
LW		 5517 sv = (SV*)SvRV(sv);
5518 if (!SvOBJECT(sv))
463ee0b2
LW		 5519 return 0;
5520
5521 return strEQ(HvNAME(SvSTASH(sv)), name);
5522}
5523
954c1994
GS		 5524/*
5525=for apidoc newSVrv
5526
5527Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5528it will be upgraded to one. If C<classname> is non-null then the new SV will
5529be blessed in the specified package. The new SV is returned and its
5530reference count is 1.
5531
5532=cut
5533*/
5534
463ee0b2 5535SV*
864dbfa3 5536Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5537{
11343788 5538 dTHR;
463ee0b2
LW		 5539 SV *sv;
5540
4561caa4 5541 new_SV(sv);
51cf62d8 5542
2213622d 5543 SV_CHECK_THINKFIRST(rv);
51cf62d8 5544 SvAMAGIC_off(rv);
51cf62d8
OT		 5545
5546 if (SvTYPE(rv) < SVt_RV)
5547 sv_upgrade(rv, SVt_RV);
5548
5549 (void)SvOK_off(rv);
053fc874 5550 SvRV(rv) = sv;
ed6116ce 5551 SvROK_on(rv);
463ee0b2 5552
a0d0e21e
LW		 5553 if (classname) {
5554 HV* stash = gv_stashpv(classname, TRUE);
5555 (void)sv_bless(rv, stash);
5556 }
5557 return sv;
5558}
5559
954c1994
GS		 5560/*
5561=for apidoc sv_setref_pv
5562
5563Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5564argument will be upgraded to an RV. That RV will be modified to point to
5565the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5566into the SV. The C<classname> argument indicates the package for the
5567blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5568will be returned and will have a reference count of 1.
5569
5570Do not use with other Perl types such as HV, AV, SV, CV, because those
5571objects will become corrupted by the pointer copy process.
5572
5573Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5574
5575=cut
5576*/
5577
a0d0e21e 5578SV*
864dbfa3 5579Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5580{
189b2af5 5581 if (!pv) {
3280af22 5582 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5583 SvSETMAGIC(rv);
5584 }
a0d0e21e 5585 else
56431972 5586 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5587 return rv;
5588}
5589
954c1994
GS		 5590/*
5591=for apidoc sv_setref_iv
5592
5593Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5594argument will be upgraded to an RV. That RV will be modified to point to
5595the new SV. The C<classname> argument indicates the package for the
5596blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5597will be returned and will have a reference count of 1.
5598
5599=cut
5600*/
5601
a0d0e21e 5602SV*
864dbfa3 5603Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5604{
5605 sv_setiv(newSVrv(rv,classname), iv);
5606 return rv;
5607}
5608
954c1994
GS		 5609/*
5610=for apidoc sv_setref_nv
5611
5612Copies a double into a new SV, optionally blessing the SV. The C<rv>
5613argument will be upgraded to an RV. That RV will be modified to point to
5614the new SV. The C<classname> argument indicates the package for the
5615blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5616will be returned and will have a reference count of 1.
5617
5618=cut
5619*/
5620
a0d0e21e 5621SV*
65202027 5622Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5623{
5624 sv_setnv(newSVrv(rv,classname), nv);
5625 return rv;
5626}
463ee0b2 5627
954c1994
GS		 5628/*
5629=for apidoc sv_setref_pvn
5630
5631Copies a string into a new SV, optionally blessing the SV. The length of the
5632string must be specified with C<n>. The C<rv> argument will be upgraded to
5633an RV. That RV will be modified to point to the new SV. The C<classname>
5634argument indicates the package for the blessing. Set C<classname> to
5635C<Nullch> to avoid the blessing. The new SV will be returned and will have
5636a reference count of 1.
5637
5638Note that C<sv_setref_pv> copies the pointer while this copies the string.
5639
5640=cut
5641*/
5642
a0d0e21e 5643SV*
864dbfa3 5644Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5645{
5646 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5647 return rv;
5648}
5649
954c1994
GS		 5650/*
5651=for apidoc sv_bless
5652
5653Blesses an SV into a specified package. The SV must be an RV. The package
5654must be designated by its stash (see C<gv_stashpv()>). The reference count
5655of the SV is unaffected.
5656
5657=cut
5658*/
5659
a0d0e21e 5660SV*
864dbfa3 5661Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5662{
11343788 5663 dTHR;
76e3520e 5664 SV *tmpRef;
a0d0e21e 5665 if (!SvROK(sv))
cea2e8a9 5666 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5667 tmpRef = SvRV(sv);
5668 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5669 if (SvREADONLY(tmpRef))
cea2e8a9 5670 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5671 if (SvOBJECT(tmpRef)) {
5672 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5673 --PL_sv_objcount;
76e3520e 5674 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5675 }
a0d0e21e 5676 }
76e3520e
GS		 5677 SvOBJECT_on(tmpRef);
5678 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5679 ++PL_sv_objcount;
76e3520e
GS		 5680 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5681 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5682
2e3febc6
CS		 5683 if (Gv_AMG(stash))
5684 SvAMAGIC_on(sv);
5685 else
5686 SvAMAGIC_off(sv);
a0d0e21e
LW		 5687
5688 return sv;
5689}
5690
76e3520e 5691STATIC void
cea2e8a9 5692S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5693{
850fabdf
GS		 5694 void *xpvmg;
5695
a0d0e21e
LW		 5696 assert(SvTYPE(sv) == SVt_PVGV);
5697 SvFAKE_off(sv);
5698 if (GvGP(sv))
1edc1566 5699 gp_free((GV*)sv);
e826b3c7
GS		 5700 if (GvSTASH(sv)) {
5701 SvREFCNT_dec(GvSTASH(sv));
5702 GvSTASH(sv) = Nullhv;
5703 }
a0d0e21e
LW		 5704 sv_unmagic(sv, '*');
5705 Safefree(GvNAME(sv));
a5f75d66 5706 GvMULTI_off(sv);
850fabdf
GS		 5707
5708 /* need to keep SvANY(sv) in the right arena */
5709 xpvmg = new_XPVMG();
5710 StructCopy(SvANY(sv), xpvmg, XPVMG);
5711 del_XPVGV(SvANY(sv));
5712 SvANY(sv) = xpvmg;
5713
a0d0e21e
LW		 5714 SvFLAGS(sv) &= ~SVTYPEMASK;
5715 SvFLAGS(sv) |= SVt_PVMG;
5716}
5717
954c1994
GS		 5718/*
5719=for apidoc sv_unref
5720
5721Unsets the RV status of the SV, and decrements the reference count of
5722whatever was being referenced by the RV. This can almost be thought of
5723as a reversal of C<newSVrv>. See C<SvROK_off>.
5724
5725=cut
5726*/
5727
ed6116ce 5728void
864dbfa3 5729Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5730{
a0d0e21e 5731 SV* rv = SvRV(sv);
810b8aa5
GS		 5732
5733 if (SvWEAKREF(sv)) {
5734 sv_del_backref(sv);
5735 SvWEAKREF_off(sv);
5736 SvRV(sv) = 0;
5737 return;
5738 }
ed6116ce
LW		 5739 SvRV(sv) = 0;
5740 SvROK_off(sv);
4633a7c4
LW		 5741 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5742 SvREFCNT_dec(rv);
8e07c86e 5743 else
4633a7c4 5744 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5745}
8990e307 5746
bbce6d69 5747void
864dbfa3 5748Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5749{
5750 sv_magic((sv), Nullsv, 't', Nullch, 0);
5751}
5752
5753void
864dbfa3 5754Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5755{
13f57bf8 5756 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5757 MAGIC *mg = mg_find(sv, 't');
5758 if (mg)
565764a8 5759 mg->mg_len &= ~1;
36477c24 5760 }
bbce6d69 5761}
5762
5763bool
864dbfa3 5764Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5765{
13f57bf8 5766 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5767 MAGIC *mg = mg_find(sv, 't');
155aba94 5768 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5769 return TRUE;
5770 }
5771 return FALSE;
bbce6d69 5772}
5773
954c1994
GS		 5774/*
5775=for apidoc sv_setpviv
5776
5777Copies an integer into the given SV, also updating its string value.
5778Does not handle 'set' magic. See C<sv_setpviv_mg>.
5779
5780=cut
5781*/
5782
84902520 5783void
864dbfa3 5784Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5785{
25da4f38
IZ		 5786 char buf[TYPE_CHARS(UV)];
5787 char *ebuf;
5788 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5789
25da4f38 5790 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5791}
5792
ef50df4b 5793
954c1994
GS		 5794/*
5795=for apidoc sv_setpviv_mg
5796
5797Like C<sv_setpviv>, but also handles 'set' magic.
5798
5799=cut
5800*/
5801
ef50df4b 5802void
864dbfa3 5803Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5804{
25da4f38
IZ		 5805 char buf[TYPE_CHARS(UV)];
5806 char *ebuf;
5807 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5808
5809 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5810 SvSETMAGIC(sv);
5811}
5812
cea2e8a9
GS		 5813#if defined(PERL_IMPLICIT_CONTEXT)
5814void
5815Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5816{
5817 dTHX;
5818 va_list args;
5819 va_start(args, pat);
c5be433b 5820 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5821 va_end(args);
5822}
5823
5824
5825void
5826Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5827{
5828 dTHX;
5829 va_list args;
5830 va_start(args, pat);
c5be433b 5831 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5832 va_end(args);
cea2e8a9
GS		 5833}
5834#endif
5835
954c1994
GS		 5836/*
5837=for apidoc sv_setpvf
5838
5839Processes its arguments like C<sprintf> and sets an SV to the formatted
5840output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5841
5842=cut
5843*/
5844
46fc3d4c 5845void
864dbfa3 5846Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5847{
5848 va_list args;
46fc3d4c 5849 va_start(args, pat);
c5be433b 5850 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5851 va_end(args);
5852}
5853
c5be433b
GS		 5854void
5855Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5856{
5857 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5858}
ef50df4b 5859
954c1994
GS		 5860/*
5861=for apidoc sv_setpvf_mg
5862
5863Like C<sv_setpvf>, but also handles 'set' magic.
5864
5865=cut
5866*/
5867
ef50df4b 5868void
864dbfa3 5869Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5870{
5871 va_list args;
ef50df4b 5872 va_start(args, pat);
c5be433b 5873 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5874 va_end(args);
c5be433b
GS		 5875}
5876
5877void
5878Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5879{
5880 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5881 SvSETMAGIC(sv);
5882}
5883
cea2e8a9
GS		 5884#if defined(PERL_IMPLICIT_CONTEXT)
5885void
5886Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5887{
5888 dTHX;
5889 va_list args;
5890 va_start(args, pat);
c5be433b 5891 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5892 va_end(args);
5893}
5894
5895void
5896Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5897{
5898 dTHX;
5899 va_list args;
5900 va_start(args, pat);
c5be433b 5901 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5902 va_end(args);
cea2e8a9
GS		 5903}
5904#endif
5905
954c1994
GS		 5906/*
5907=for apidoc sv_catpvf
5908
5909Processes its arguments like C<sprintf> and appends the formatted output
5910to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5911typically be called after calling this function to handle 'set' magic.
5912
5913=cut
5914*/
5915
46fc3d4c 5916void
864dbfa3 5917Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5918{
5919 va_list args;
46fc3d4c 5920 va_start(args, pat);
c5be433b 5921 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5922 va_end(args);
5923}
5924
ef50df4b 5925void
c5be433b
GS		 5926Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5927{
5928 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5929}
5930
954c1994
GS		 5931/*
5932=for apidoc sv_catpvf_mg
5933
5934Like C<sv_catpvf>, but also handles 'set' magic.
5935
5936=cut
5937*/
5938
c5be433b 5939void
864dbfa3 5940Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5941{
5942 va_list args;
ef50df4b 5943 va_start(args, pat);
c5be433b 5944 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5945 va_end(args);
c5be433b
GS		 5946}
5947
5948void
5949Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5950{
5951 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5952 SvSETMAGIC(sv);
5953}
5954
954c1994
GS		 5955/*
5956=for apidoc sv_vsetpvfn
5957
5958Works like C<vcatpvfn> but copies the text into the SV instead of
5959appending it.
5960
5961=cut
5962*/
5963
46fc3d4c 5964void
7d5ea4e7 5965Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5966{
5967 sv_setpvn(sv, "", 0);
7d5ea4e7 5968 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5969}
5970
954c1994
GS		 5971/*
5972=for apidoc sv_vcatpvfn
5973
5974Processes its arguments like C<vsprintf> and appends the formatted output
5975to an SV. Uses an array of SVs if the C style variable argument list is
5976missing (NULL). When running with taint checks enabled, indicates via
5977C<maybe_tainted> if results are untrustworthy (often due to the use of
5978locales).
5979
5980=cut
5981*/
5982
46fc3d4c 5983void
7d5ea4e7 5984Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5985{
e858de61 5986 dTHR;
46fc3d4c 5987 char *p;
5988 char *q;
5989 char *patend;
fc36a67e 5990 STRLEN origlen;
46fc3d4c 5991 I32 svix = 0;
c635e13b 5992 static char nullstr[] = "(null)";
7e2040f0 5993 SV *argsv;
46fc3d4c 5994
5995 /* no matter what, this is a string now */
fc36a67e 5996 (void)SvPV_force(sv, origlen);
46fc3d4c 5997
fc36a67e 5998 /* special-case "", "%s", and "%_" */
46fc3d4c 5999 if (patlen == 0)
6000 return;
fc36a67e 6001 if (patlen == 2 && pat[0] == '%') {
6002 switch (pat[1]) {
6003 case 's':
c635e13b 6004 if (args) {
6005 char *s = va_arg(*args, char*);
6006 sv_catpv(sv, s ? s : nullstr);
6007 }
7e2040f0 6008 else if (svix < svmax) {
fc36a67e 6009 sv_catsv(sv, *svargs);
7e2040f0
GS		 6010 if (DO_UTF8(*svargs))
6011 SvUTF8_on(sv);
6012 }
fc36a67e 6013 return;
6014 case '_':
6015 if (args) {
7e2040f0
GS		 6016 argsv = va_arg(*args, SV*);
6017 sv_catsv(sv, argsv);
6018 if (DO_UTF8(argsv))
6019 SvUTF8_on(sv);
fc36a67e 6020 return;
6021 }
6022 /* See comment on '_' below */
6023 break;
6024 }
46fc3d4c 6025 }
6026
6027 patend = (char*)pat + patlen;
6028 for (p = (char*)pat; p < patend; p = q) {
6029 bool alt = FALSE;
6030 bool left = FALSE;
b22c7a20
GS		 6031 bool vectorize = FALSE;
6032 bool utf = FALSE;
46fc3d4c 6033 char fill = ' ';
6034 char plus = 0;
6035 char intsize = 0;
6036 STRLEN width = 0;
fc36a67e 6037 STRLEN zeros = 0;
46fc3d4c 6038 bool has_precis = FALSE;
6039 STRLEN precis = 0;
7e2040f0 6040 bool is_utf = FALSE;
46fc3d4c 6041
6042 char esignbuf[4];
806e7201 6043 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6044 STRLEN esignlen = 0;
6045
6046 char *eptr = Nullch;
fc36a67e 6047 STRLEN elen = 0;
089c015b
JH		 6048 /* Times 4: a decimal digit takes more than 3 binary digits.
6049 * NV_DIG: mantissa takes than many decimal digits.
6050 * Plus 32: Playing safe. */
6051 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6052 /* large enough for "%#.#f" --chip */
6053 /* what about long double NVs? --jhi */
b22c7a20
GS		 6054
6055 SV *vecsv;
a05b299f 6056 U8 *vecstr = Null(U8*);
b22c7a20 6057 STRLEN veclen = 0;
46fc3d4c 6058 char c;
6059 int i;
6060 unsigned base;
6061 IV iv;
6062 UV uv;
65202027 6063 NV nv;
46fc3d4c 6064 STRLEN have;
6065 STRLEN need;
6066 STRLEN gap;
b22c7a20
GS		 6067 char *dotstr = ".";
6068 STRLEN dotstrlen = 1;
46fc3d4c 6069
6070 for (q = p; q < patend && *q != '%'; ++q) ;
6071 if (q > p) {
6072 sv_catpvn(sv, p, q - p);
6073 p = q;
6074 }
6075 if (q++ >= patend)
6076 break;
6077
fc36a67e 6078 /* FLAGS */
6079
46fc3d4c 6080 while (*q) {
6081 switch (*q) {
6082 case ' ':
6083 case '+':
6084 plus = *q++;
6085 continue;
6086
6087 case '-':
6088 left = TRUE;
6089 q++;
6090 continue;
6091
6092 case '0':
6093 fill = *q++;
6094 continue;
6095
6096 case '#':
6097 alt = TRUE;
6098 q++;
6099 continue;
6100
b22c7a20
GS		 6101 case '*': /* printf("%*vX",":",$ipv6addr) */
6102 if (q[1] != 'v')
6103 break;
6104 q++;
6105 if (args)
6106 vecsv = va_arg(*args, SV*);
6107 else if (svix < svmax)
6108 vecsv = svargs[svix++];
9c3dd3fe
GS		 6109 else
6110 continue;
b22c7a20
GS		 6111 dotstr = SvPVx(vecsv,dotstrlen);
6112 if (DO_UTF8(vecsv))
6113 is_utf = TRUE;
6114 /* FALL THROUGH */
6115
6116 case 'v':
6117 vectorize = TRUE;
6118 q++;
b22c7a20
GS		 6119 continue;
6120
fc36a67e 6121 default:
6122 break;
6123 }
6124 break;
6125 }
46fc3d4c 6126
fc36a67e 6127 /* WIDTH */
6128
6129 switch (*q) {
6130 case '1': case '2': case '3':
6131 case '4': case '5': case '6':
6132 case '7': case '8': case '9':
6133 width = 0;
6134 while (isDIGIT(*q))
6135 width = width * 10 + (*q++ - '0');
6136 break;
6137
6138 case '*':
6139 if (args)
6140 i = va_arg(*args, int);
6141 else
6142 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6143 left |= (i < 0);
6144 width = (i < 0) ? -i : i;
6145 q++;
6146 break;
6147 }
6148
6149 /* PRECISION */
46fc3d4c 6150
fc36a67e 6151 if (*q == '.') {
6152 q++;
6153 if (*q == '*') {
46fc3d4c 6154 if (args)
6155 i = va_arg(*args, int);
6156 else
6157 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
fc36a67e 6158 precis = (i < 0) ? 0 : i;
46fc3d4c 6159 q++;
fc36a67e 6160 }
6161 else {
6162 precis = 0;
6163 while (isDIGIT(*q))
6164 precis = precis * 10 + (*q++ - '0');
6165 }
6166 has_precis = TRUE;
6167 }
46fc3d4c 6168
bb2899ba
GS		 6169 if (vectorize) {
6170 if (args) {
6171 vecsv = va_arg(*args, SV*);
6172 vecstr = (U8*)SvPVx(vecsv,veclen);
6173 utf = DO_UTF8(vecsv);
6174 }
6175 else if (svix < svmax) {
6176 vecsv = svargs[svix++];
6177 vecstr = (U8*)SvPVx(vecsv,veclen);
6178 utf = DO_UTF8(vecsv);
6179 }
6180 else {
6181 vecstr = (U8*)"";
6182 veclen = 0;
6183 }
6184 }
6185
fc36a67e 6186 /* SIZE */
46fc3d4c 6187
fc36a67e 6188 switch (*q) {
6f9bb7fd
GS		 6189#ifdef HAS_QUAD
6190 case 'L': /* Ld */
6191 case 'q': /* qd */
6192 intsize = 'q';
6193 q++;
6194 break;
6195#endif
fc36a67e 6196 case 'l':
cf2093f6
JH		 6197#ifdef HAS_QUAD
6198 if (*(q + 1) == 'l') { /* lld */
fc36a67e 6199 intsize = 'q';
6200 q += 2;
46fc3d4c 6201 break;
cf2093f6 6202 }
fc36a67e 6203#endif
6f9bb7fd 6204 /* FALL THROUGH */
fc36a67e 6205 case 'h':
cf2093f6 6206 /* FALL THROUGH */
fc36a67e 6207 case 'V':
6208 intsize = *q++;
46fc3d4c 6209 break;
6210 }
6211
fc36a67e 6212 /* CONVERSION */
6213
46fc3d4c 6214 switch (c = *q++) {
6215
6216 /* STRINGS */
6217
6218 case '%':
6219 eptr = q - 1;
6220 elen = 1;
6221 goto string;
6222
6223 case 'c':
7e2040f0
GS		 6224 if (args)
6225 uv = va_arg(*args, int);
6226 else
6227 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
3969a896 6228 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6229 eptr = (char*)utf8buf;
6230 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6231 is_utf = TRUE;
6232 }
6233 else {
6234 c = (char)uv;
6235 eptr = &c;
6236 elen = 1;
a0ed51b3 6237 }
46fc3d4c 6238 goto string;
6239
46fc3d4c 6240 case 's':
6241 if (args) {
fc36a67e 6242 eptr = va_arg(*args, char*);
c635e13b 6243 if (eptr)
1d7c1841
GS		 6244#ifdef MACOS_TRADITIONAL
6245 /* On MacOS, %#s format is used for Pascal strings */
6246 if (alt)
6247 elen = *eptr++;
6248 else
6249#endif
c635e13b 6250 elen = strlen(eptr);
6251 else {
6252 eptr = nullstr;
6253 elen = sizeof nullstr - 1;
6254 }
46fc3d4c 6255 }
a0ed51b3 6256 else if (svix < svmax) {
7e2040f0
GS		 6257 argsv = svargs[svix++];
6258 eptr = SvPVx(argsv, elen);
6259 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6260 if (has_precis && precis < elen) {
6261 I32 p = precis;
7e2040f0 6262 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6263 precis = p;
6264 }
6265 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6266 width += elen - sv_len_utf8(argsv);
a0ed51b3 6267 }
7e2040f0 6268 is_utf = TRUE;
a0ed51b3
LW		 6269 }
6270 }
46fc3d4c 6271 goto string;
6272
fc36a67e 6273 case '_':
6274 /*
6275 * The "%_" hack might have to be changed someday,
6276 * if ISO or ANSI decide to use '_' for something.
6277 * So we keep it hidden from users' code.
6278 */
6279 if (!args)
6280 goto unknown;
7e2040f0
GS		 6281 argsv = va_arg(*args,SV*);
6282 eptr = SvPVx(argsv, elen);
6283 if (DO_UTF8(argsv))
6284 is_utf = TRUE;
fc36a67e 6285
46fc3d4c 6286 string:
b22c7a20 6287 vectorize = FALSE;
46fc3d4c 6288 if (has_precis && elen > precis)
6289 elen = precis;
6290 break;
6291
6292 /* INTEGERS */
6293
fc36a67e 6294 case 'p':
c2e66d9e
GS		 6295 if (alt)
6296 goto unknown;
fc36a67e 6297 if (args)
56431972 6298 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6299 else
56431972 6300 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
fc36a67e 6301 base = 16;
6302 goto integer;
6303
46fc3d4c 6304 case 'D':
29fe7a80 6305#ifdef IV_IS_QUAD
22f3ae8c 6306 intsize = 'q';
29fe7a80 6307#else
46fc3d4c 6308 intsize = 'l';
29fe7a80 6309#endif
46fc3d4c 6310 /* FALL THROUGH */
6311 case 'd':
6312 case 'i':
b22c7a20
GS		 6313 if (vectorize) {
6314 I32 ulen;
6315 if (!veclen) {
6316 vectorize = FALSE;
6317 break;
6318 }
6319 if (utf)
6320 iv = (IV)utf8_to_uv(vecstr, &ulen);
6321 else {
a05b299f 6322 iv = *vecstr;
b22c7a20
GS		 6323 ulen = 1;
6324 }
6325 vecstr += ulen;
6326 veclen -= ulen;
6327 }
6328 else if (args) {
46fc3d4c 6329 switch (intsize) {
6330 case 'h': iv = (short)va_arg(*args, int); break;
6331 default: iv = va_arg(*args, int); break;
6332 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6333 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6334#ifdef HAS_QUAD
6335 case 'q': iv = va_arg(*args, Quad_t); break;
6336#endif
46fc3d4c 6337 }
6338 }
6339 else {
6340 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6341 switch (intsize) {
6342 case 'h': iv = (short)iv; break;
be28567c 6343 default: break;
46fc3d4c 6344 case 'l': iv = (long)iv; break;
fc36a67e 6345 case 'V': break;
cf2093f6
JH		 6346#ifdef HAS_QUAD
6347 case 'q': iv = (Quad_t)iv; break;
6348#endif
46fc3d4c 6349 }
6350 }
6351 if (iv >= 0) {
6352 uv = iv;
6353 if (plus)
6354 esignbuf[esignlen++] = plus;
6355 }
6356 else {
6357 uv = -iv;
6358 esignbuf[esignlen++] = '-';
6359 }
6360 base = 10;
6361 goto integer;
6362
fc36a67e 6363 case 'U':
29fe7a80 6364#ifdef IV_IS_QUAD
22f3ae8c 6365 intsize = 'q';
29fe7a80 6366#else
fc36a67e 6367 intsize = 'l';
29fe7a80 6368#endif
fc36a67e 6369 /* FALL THROUGH */
6370 case 'u':
6371 base = 10;
6372 goto uns_integer;
6373
4f19785b
WSI		 6374 case 'b':
6375 base = 2;
6376 goto uns_integer;
6377
46fc3d4c 6378 case 'O':
29fe7a80 6379#ifdef IV_IS_QUAD
22f3ae8c 6380 intsize = 'q';
29fe7a80 6381#else
46fc3d4c 6382 intsize = 'l';
29fe7a80 6383#endif
46fc3d4c 6384 /* FALL THROUGH */
6385 case 'o':
6386 base = 8;
6387 goto uns_integer;
6388
6389 case 'X':
46fc3d4c 6390 case 'x':
6391 base = 16;
46fc3d4c 6392
6393 uns_integer:
b22c7a20
GS		 6394 if (vectorize) {
6395 I32 ulen;
6396 vector:
6397 if (!veclen) {
6398 vectorize = FALSE;
6399 break;
6400 }
6401 if (utf)
6402 uv = utf8_to_uv(vecstr, &ulen);
6403 else {
a05b299f 6404 uv = *vecstr;
b22c7a20
GS		 6405 ulen = 1;
6406 }
6407 vecstr += ulen;
6408 veclen -= ulen;
6409 }
6410 else if (args) {
46fc3d4c 6411 switch (intsize) {
6412 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6413 default: uv = va_arg(*args, unsigned); break;
6414 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6415 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6416#ifdef HAS_QUAD
6417 case 'q': uv = va_arg(*args, Quad_t); break;
6418#endif
46fc3d4c 6419 }
6420 }
6421 else {
6422 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6423 switch (intsize) {
6424 case 'h': uv = (unsigned short)uv; break;
be28567c 6425 default: break;
46fc3d4c 6426 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6427 case 'V': break;
cf2093f6
JH		 6428#ifdef HAS_QUAD
6429 case 'q': uv = (Quad_t)uv; break;
6430#endif
46fc3d4c 6431 }
6432 }
6433
6434 integer:
46fc3d4c 6435 eptr = ebuf + sizeof ebuf;
fc36a67e 6436 switch (base) {
6437 unsigned dig;
6438 case 16:
c10ed8b9
HS		 6439 if (!uv)
6440 alt = FALSE;
1d7c1841
GS		 6441 p = (char*)((c == 'X')
6442 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6443 do {
6444 dig = uv & 15;
6445 *--eptr = p[dig];
6446 } while (uv >>= 4);
6447 if (alt) {
46fc3d4c 6448 esignbuf[esignlen++] = '0';
fc36a67e 6449 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6450 }
fc36a67e 6451 break;
6452 case 8:
6453 do {
6454 dig = uv & 7;
6455 *--eptr = '0' + dig;
6456 } while (uv >>= 3);
6457 if (alt && *eptr != '0')
6458 *--eptr = '0';
6459 break;
4f19785b
WSI		 6460 case 2:
6461 do {
6462 dig = uv & 1;
6463 *--eptr = '0' + dig;
6464 } while (uv >>= 1);
eda88b6d
JH		 6465 if (alt) {
6466 esignbuf[esignlen++] = '0';
7481bb52 6467 esignbuf[esignlen++] = 'b';
eda88b6d 6468 }
4f19785b 6469 break;
fc36a67e 6470 default: /* it had better be ten or less */
6bc102ca 6471#if defined(PERL_Y2KWARN)
e476b1b5 6472 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6473 STRLEN n;
6474 char *s = SvPV(sv,n);
6475 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6476 && (n == 2 || !isDIGIT(s[n-3])))
6477 {
e476b1b5 6478 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6479 "Possible Y2K bug: %%%c %s",
6480 c, "format string following '19'");
6481 }
6482 }
6483#endif
fc36a67e 6484 do {
6485 dig = uv % base;
6486 *--eptr = '0' + dig;
6487 } while (uv /= base);
6488 break;
46fc3d4c 6489 }
6490 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6491 if (has_precis) {
6492 if (precis > elen)
6493 zeros = precis - elen;
6494 else if (precis == 0 && elen == 1 && *eptr == '0')
6495 elen = 0;
6496 }
46fc3d4c 6497 break;
6498
6499 /* FLOATING POINT */
6500
fc36a67e 6501 case 'F':
6502 c = 'f'; /* maybe %F isn't supported here */
6503 /* FALL THROUGH */
46fc3d4c 6504 case 'e': case 'E':
fc36a67e 6505 case 'f':
46fc3d4c 6506 case 'g': case 'G':
6507
6508 /* This is evil, but floating point is even more evil */
6509
b22c7a20 6510 vectorize = FALSE;
fc36a67e 6511 if (args)
65202027 6512 nv = va_arg(*args, NV);
fc36a67e 6513 else
6514 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6515
6516 need = 0;
6517 if (c != 'e' && c != 'E') {
6518 i = PERL_INT_MIN;
73b309ea 6519 (void)Perl_frexp(nv, &i);
fc36a67e 6520 if (i == PERL_INT_MIN)
cea2e8a9 6521 Perl_die(aTHX_ "panic: frexp");
c635e13b 6522 if (i > 0)
fc36a67e 6523 need = BIT_DIGITS(i);
6524 }
6525 need += has_precis ? precis : 6; /* known default */
6526 if (need < width)
6527 need = width;
6528
46fc3d4c 6529 need += 20; /* fudge factor */
80252599
GS		 6530 if (PL_efloatsize < need) {
6531 Safefree(PL_efloatbuf);
6532 PL_efloatsize = need + 20; /* more fudge */
6533 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6534 PL_efloatbuf[0] = '\0';
46fc3d4c 6535 }
6536
6537 eptr = ebuf + sizeof ebuf;
6538 *--eptr = '\0';
6539 *--eptr = c;
65202027 6540#ifdef USE_LONG_DOUBLE
cf2093f6 6541 {
7a7a2329 6542 static char const my_prifldbl[] = PERL_PRIfldbl;
f320eb41
JH		 6543 char const *p = my_prifldbl + sizeof my_prifldbl - 3;
6544 while (p >= my_prifldbl) { *--eptr = *p--; }
cf2093f6 6545 }
65202027 6546#endif
46fc3d4c 6547 if (has_precis) {
6548 base = precis;
6549 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6550 *--eptr = '.';
6551 }
6552 if (width) {
6553 base = width;
6554 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6555 }
6556 if (fill == '0')
6557 *--eptr = fill;
84902520
TB		 6558 if (left)
6559 *--eptr = '-';
46fc3d4c 6560 if (plus)
6561 *--eptr = plus;
6562 if (alt)
6563 *--eptr = '#';
6564 *--eptr = '%';
6565
68d47915
CK		 6566 (void)sprintf(PL_efloatbuf, eptr, nv);
6567
80252599
GS		 6568 eptr = PL_efloatbuf;
6569 elen = strlen(PL_efloatbuf);
46fc3d4c 6570 break;
6571
fc36a67e 6572 /* SPECIAL */
6573
6574 case 'n':
b22c7a20 6575 vectorize = FALSE;
fc36a67e 6576 i = SvCUR(sv) - origlen;
6577 if (args) {
c635e13b 6578 switch (intsize) {
6579 case 'h': *(va_arg(*args, short*)) = i; break;
6580 default: *(va_arg(*args, int*)) = i; break;
6581 case 'l': *(va_arg(*args, long*)) = i; break;
6582 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6583#ifdef HAS_QUAD
6584 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6585#endif
c635e13b 6586 }
fc36a67e 6587 }
6588 else if (svix < svmax)
c2e66d9e 6589 sv_setuv_mg(svargs[svix++], (UV)i);
fc36a67e 6590 continue; /* not "break" */
6591
6592 /* UNKNOWN */
6593
46fc3d4c 6594 default:
fc36a67e 6595 unknown:
b22c7a20 6596 vectorize = FALSE;
599cee73 6597 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6598 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6599 SV *msg = sv_newmortal();
cea2e8a9 6600 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6601 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6602 if (c) {
0f4b6630
JH		 6603 if (isPRINT(c))
6604 Perl_sv_catpvf(aTHX_ msg,
6605 "\"%%%c\"", c & 0xFF);
6606 else
6607 Perl_sv_catpvf(aTHX_ msg,
57def98f 6608 "\"%%\\%03"UVof"\"",
0f4b6630 6609 (UV)c & 0xFF);
0f4b6630 6610 } else
c635e13b 6611 sv_catpv(msg, "end of string");
894356b3 6612 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6613 }
fb73857a 6614
6615 /* output mangled stuff ... */
6616 if (c == '\0')
6617 --q;
46fc3d4c 6618 eptr = p;
6619 elen = q - p;
fb73857a 6620
6621 /* ... right here, because formatting flags should not apply */
6622 SvGROW(sv, SvCUR(sv) + elen + 1);
6623 p = SvEND(sv);
6624 memcpy(p, eptr, elen);
6625 p += elen;
6626 *p = '\0';
6627 SvCUR(sv) = p - SvPVX(sv);
6628 continue; /* not "break" */
46fc3d4c 6629 }
6630
fc36a67e 6631 have = esignlen + zeros + elen;
46fc3d4c 6632 need = (have > width ? have : width);
6633 gap = need - have;
6634
b22c7a20 6635 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6636 p = SvEND(sv);
6637 if (esignlen && fill == '0') {
6638 for (i = 0; i < esignlen; i++)
6639 *p++ = esignbuf[i];
6640 }
6641 if (gap && !left) {
6642 memset(p, fill, gap);
6643 p += gap;
6644 }
6645 if (esignlen && fill != '0') {
6646 for (i = 0; i < esignlen; i++)
6647 *p++ = esignbuf[i];
6648 }
fc36a67e 6649 if (zeros) {
6650 for (i = zeros; i; i--)
6651 *p++ = '0';
6652 }
46fc3d4c 6653 if (elen) {
6654 memcpy(p, eptr, elen);
6655 p += elen;
6656 }
6657 if (gap && left) {
6658 memset(p, ' ', gap);
6659 p += gap;
6660 }
b22c7a20
GS		 6661 if (vectorize) {
6662 if (veclen) {
6663 memcpy(p, dotstr, dotstrlen);
6664 p += dotstrlen;
6665 }
6666 else
6667 vectorize = FALSE; /* done iterating over vecstr */
6668 }
7e2040f0
GS		 6669 if (is_utf)
6670 SvUTF8_on(sv);
46fc3d4c 6671 *p = '\0';
6672 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6673 if (vectorize) {
6674 esignlen = 0;
6675 goto vector;
6676 }
46fc3d4c 6677 }
6678}
51371543 6679
1d7c1841
GS		 6680#if defined(USE_ITHREADS)
6681
6682#if defined(USE_THREADS)
6683# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6684#endif
6685
1d7c1841
GS		 6686#ifndef GpREFCNT_inc
6687# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6688#endif
6689
6690
6691#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6692#define av_dup(s) (AV*)sv_dup((SV*)s)
6693#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6694#define hv_dup(s) (HV*)sv_dup((SV*)s)
6695#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6696#define cv_dup(s) (CV*)sv_dup((SV*)s)
6697#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6698#define io_dup(s) (IO*)sv_dup((SV*)s)
6699#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6700#define gv_dup(s) (GV*)sv_dup((SV*)s)
6701#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6702#define SAVEPV(p) (p ? savepv(p) : Nullch)
6703#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6704
6705REGEXP *
6706Perl_re_dup(pTHX_ REGEXP *r)
6707{
6708 /* XXX fix when pmop->op_pmregexp becomes shared */
6709 return ReREFCNT_inc(r);
6710}
6711
6712PerlIO *
6713Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6714{
6715 PerlIO *ret;
6716 if (!fp)
6717 return (PerlIO*)NULL;
6718
6719 /* look for it in the table first */
6720 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6721 if (ret)
6722 return ret;
6723
6724 /* create anew and remember what it is */
6725 ret = PerlIO_fdupopen(fp);
6726 ptr_table_store(PL_ptr_table, fp, ret);
6727 return ret;
6728}
6729
6730DIR *
6731Perl_dirp_dup(pTHX_ DIR *dp)
6732{
6733 if (!dp)
6734 return (DIR*)NULL;
6735 /* XXX TODO */
6736 return dp;
6737}
6738
6739GP *
6740Perl_gp_dup(pTHX_ GP *gp)
6741{
6742 GP *ret;
6743 if (!gp)
6744 return (GP*)NULL;
6745 /* look for it in the table first */
6746 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6747 if (ret)
6748 return ret;
6749
6750 /* create anew and remember what it is */
6751 Newz(0, ret, 1, GP);
6752 ptr_table_store(PL_ptr_table, gp, ret);
6753
6754 /* clone */
6755 ret->gp_refcnt = 0; /* must be before any other dups! */
6756 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6757 ret->gp_io = io_dup_inc(gp->gp_io);
6758 ret->gp_form = cv_dup_inc(gp->gp_form);
6759 ret->gp_av = av_dup_inc(gp->gp_av);
6760 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6761 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6762 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6763 ret->gp_cvgen = gp->gp_cvgen;
6764 ret->gp_flags = gp->gp_flags;
6765 ret->gp_line = gp->gp_line;
6766 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6767 return ret;
6768}
6769
6770MAGIC *
6771Perl_mg_dup(pTHX_ MAGIC *mg)
6772{
6773 MAGIC *mgret = (MAGIC*)NULL;
6774 MAGIC *mgprev;
6775 if (!mg)
6776 return (MAGIC*)NULL;
6777 /* look for it in the table first */
6778 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6779 if (mgret)
6780 return mgret;
6781
6782 for (; mg; mg = mg->mg_moremagic) {
6783 MAGIC *nmg;
6784 Newz(0, nmg, 1, MAGIC);
6785 if (!mgret)
6786 mgret = nmg;
6787 else
6788 mgprev->mg_moremagic = nmg;
6789 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6790 nmg->mg_private = mg->mg_private;
6791 nmg->mg_type = mg->mg_type;
6792 nmg->mg_flags = mg->mg_flags;
6793 if (mg->mg_type == 'r') {
6794 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6795 }
6796 else {
6797 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6798 ? sv_dup_inc(mg->mg_obj)
6799 : sv_dup(mg->mg_obj);
6800 }
6801 nmg->mg_len = mg->mg_len;
6802 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6803 if (mg->mg_ptr && mg->mg_type != 'g') {
6804 if (mg->mg_len >= 0) {
6805 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6806 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6807 AMT *amtp = (AMT*)mg->mg_ptr;
6808 AMT *namtp = (AMT*)nmg->mg_ptr;
6809 I32 i;
6810 for (i = 1; i < NofAMmeth; i++) {
6811 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6812 }
6813 }
6814 }
6815 else if (mg->mg_len == HEf_SVKEY)
6816 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6817 }
6818 mgprev = nmg;
6819 }
6820 return mgret;
6821}
6822
6823PTR_TBL_t *
6824Perl_ptr_table_new(pTHX)
6825{
6826 PTR_TBL_t *tbl;
6827 Newz(0, tbl, 1, PTR_TBL_t);
6828 tbl->tbl_max = 511;
6829 tbl->tbl_items = 0;
6830 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6831 return tbl;
6832}
6833
6834void *
6835Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6836{
6837 PTR_TBL_ENT_t *tblent;
d2a79402 6838 UV hash = PTR2UV(sv);
1d7c1841
GS		 6839 assert(tbl);
6840 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6841 for (; tblent; tblent = tblent->next) {
6842 if (tblent->oldval == sv)
6843 return tblent->newval;
6844 }
6845 return (void*)NULL;
6846}
6847
6848void
6849Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6850{
6851 PTR_TBL_ENT_t *tblent, **otblent;
6852 /* XXX this may be pessimal on platforms where pointers aren't good
6853 * hash values e.g. if they grow faster in the most significant
6854 * bits */
d2a79402 6855 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6856 bool i = 1;
6857
6858 assert(tbl);
6859 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6860 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6861 if (tblent->oldval == oldv) {
6862 tblent->newval = newv;
6863 tbl->tbl_items++;
6864 return;
6865 }
6866 }
6867 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6868 tblent->oldval = oldv;
6869 tblent->newval = newv;
6870 tblent->next = *otblent;
6871 *otblent = tblent;
6872 tbl->tbl_items++;
6873 if (i && tbl->tbl_items > tbl->tbl_max)
6874 ptr_table_split(tbl);
6875}
6876
6877void
6878Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6879{
6880 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6881 UV oldsize = tbl->tbl_max + 1;
6882 UV newsize = oldsize * 2;
6883 UV i;
6884
6885 Renew(ary, newsize, PTR_TBL_ENT_t*);
6886 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6887 tbl->tbl_max = --newsize;
6888 tbl->tbl_ary = ary;
6889 for (i=0; i < oldsize; i++, ary++) {
6890 PTR_TBL_ENT_t **curentp, **entp, *ent;
6891 if (!*ary)
6892 continue;
6893 curentp = ary + oldsize;
6894 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6895 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6896 *entp = ent->next;
6897 ent->next = *curentp;
6898 *curentp = ent;
6899 continue;
6900 }
6901 else
6902 entp = &ent->next;
6903 }
6904 }
6905}
6906
6907#ifdef DEBUGGING
6908char *PL_watch_pvx;
6909#endif
6910
6911SV *
6912Perl_sv_dup(pTHX_ SV *sstr)
6913{
1d7c1841
GS		 6914 SV *dstr;
6915
6916 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6917 return Nullsv;
6918 /* look for it in the table first */
6919 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6920 if (dstr)
6921 return dstr;
6922
6923 /* create anew and remember what it is */
6924 new_SV(dstr);
6925 ptr_table_store(PL_ptr_table, sstr, dstr);
6926
6927 /* clone */
6928 SvFLAGS(dstr) = SvFLAGS(sstr);
6929 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6930 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6931
6932#ifdef DEBUGGING
6933 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6934 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6935 PL_watch_pvx, SvPVX(sstr));
6936#endif
6937
6938 switch (SvTYPE(sstr)) {
6939 case SVt_NULL:
6940 SvANY(dstr) = NULL;
6941 break;
6942 case SVt_IV:
6943 SvANY(dstr) = new_XIV();
6944 SvIVX(dstr) = SvIVX(sstr);
6945 break;
6946 case SVt_NV:
6947 SvANY(dstr) = new_XNV();
6948 SvNVX(dstr) = SvNVX(sstr);
6949 break;
6950 case SVt_RV:
6951 SvANY(dstr) = new_XRV();
6952 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6953 break;
6954 case SVt_PV:
6955 SvANY(dstr) = new_XPV();
6956 SvCUR(dstr) = SvCUR(sstr);
6957 SvLEN(dstr) = SvLEN(sstr);
6958 if (SvROK(sstr))
6959 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6960 else if (SvPVX(sstr) && SvLEN(sstr))
6961 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6962 else
6963 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6964 break;
6965 case SVt_PVIV:
6966 SvANY(dstr) = new_XPVIV();
6967 SvCUR(dstr) = SvCUR(sstr);
6968 SvLEN(dstr) = SvLEN(sstr);
6969 SvIVX(dstr) = SvIVX(sstr);
6970 if (SvROK(sstr))
6971 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6972 else if (SvPVX(sstr) && SvLEN(sstr))
6973 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6974 else
6975 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6976 break;
6977 case SVt_PVNV:
6978 SvANY(dstr) = new_XPVNV();
6979 SvCUR(dstr) = SvCUR(sstr);
6980 SvLEN(dstr) = SvLEN(sstr);
6981 SvIVX(dstr) = SvIVX(sstr);
6982 SvNVX(dstr) = SvNVX(sstr);
6983 if (SvROK(sstr))
6984 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6985 else if (SvPVX(sstr) && SvLEN(sstr))
6986 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6987 else
6988 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6989 break;
6990 case SVt_PVMG:
6991 SvANY(dstr) = new_XPVMG();
6992 SvCUR(dstr) = SvCUR(sstr);
6993 SvLEN(dstr) = SvLEN(sstr);
6994 SvIVX(dstr) = SvIVX(sstr);
6995 SvNVX(dstr) = SvNVX(sstr);
6996 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6997 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6998 if (SvROK(sstr))
6999 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7000 else if (SvPVX(sstr) && SvLEN(sstr))
7001 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7002 else
7003 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7004 break;
7005 case SVt_PVBM:
7006 SvANY(dstr) = new_XPVBM();
7007 SvCUR(dstr) = SvCUR(sstr);
7008 SvLEN(dstr) = SvLEN(sstr);
7009 SvIVX(dstr) = SvIVX(sstr);
7010 SvNVX(dstr) = SvNVX(sstr);
7011 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7012 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7013 if (SvROK(sstr))
7014 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7015 else if (SvPVX(sstr) && SvLEN(sstr))
7016 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7017 else
7018 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7019 BmRARE(dstr) = BmRARE(sstr);
7020 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7021 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7022 break;
7023 case SVt_PVLV:
7024 SvANY(dstr) = new_XPVLV();
7025 SvCUR(dstr) = SvCUR(sstr);
7026 SvLEN(dstr) = SvLEN(sstr);
7027 SvIVX(dstr) = SvIVX(sstr);
7028 SvNVX(dstr) = SvNVX(sstr);
7029 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7030 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7031 if (SvROK(sstr))
7032 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7033 else if (SvPVX(sstr) && SvLEN(sstr))
7034 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7035 else
7036 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7037 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7038 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7039 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7040 LvTYPE(dstr) = LvTYPE(sstr);
7041 break;
7042 case SVt_PVGV:
7043 SvANY(dstr) = new_XPVGV();
7044 SvCUR(dstr) = SvCUR(sstr);
7045 SvLEN(dstr) = SvLEN(sstr);
7046 SvIVX(dstr) = SvIVX(sstr);
7047 SvNVX(dstr) = SvNVX(sstr);
7048 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7049 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7050 if (SvROK(sstr))
7051 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7052 else if (SvPVX(sstr) && SvLEN(sstr))
7053 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7054 else
7055 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7056 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7057 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7058 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7059 GvFLAGS(dstr) = GvFLAGS(sstr);
7060 GvGP(dstr) = gp_dup(GvGP(sstr));
7061 (void)GpREFCNT_inc(GvGP(dstr));
7062 break;
7063 case SVt_PVIO:
7064 SvANY(dstr) = new_XPVIO();
7065 SvCUR(dstr) = SvCUR(sstr);
7066 SvLEN(dstr) = SvLEN(sstr);
7067 SvIVX(dstr) = SvIVX(sstr);
7068 SvNVX(dstr) = SvNVX(sstr);
7069 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7070 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7071 if (SvROK(sstr))
7072 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7073 else if (SvPVX(sstr) && SvLEN(sstr))
7074 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7075 else
7076 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7077 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7078 if (IoOFP(sstr) == IoIFP(sstr))
7079 IoOFP(dstr) = IoIFP(dstr);
7080 else
7081 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7082 /* PL_rsfp_filters entries have fake IoDIRP() */
7083 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7084 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7085 else
7086 IoDIRP(dstr) = IoDIRP(sstr);
7087 IoLINES(dstr) = IoLINES(sstr);
7088 IoPAGE(dstr) = IoPAGE(sstr);
7089 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7090 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7091 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7092 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7093 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7094 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7095 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7096 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7097 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7098 IoTYPE(dstr) = IoTYPE(sstr);
7099 IoFLAGS(dstr) = IoFLAGS(sstr);
7100 break;
7101 case SVt_PVAV:
7102 SvANY(dstr) = new_XPVAV();
7103 SvCUR(dstr) = SvCUR(sstr);
7104 SvLEN(dstr) = SvLEN(sstr);
7105 SvIVX(dstr) = SvIVX(sstr);
7106 SvNVX(dstr) = SvNVX(sstr);
7107 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7108 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7109 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7110 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7111 if (AvARRAY((AV*)sstr)) {
7112 SV **dst_ary, **src_ary;
7113 SSize_t items = AvFILLp((AV*)sstr) + 1;
7114
7115 src_ary = AvARRAY((AV*)sstr);
7116 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7117 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7118 SvPVX(dstr) = (char*)dst_ary;
7119 AvALLOC((AV*)dstr) = dst_ary;
7120 if (AvREAL((AV*)sstr)) {
7121 while (items-- > 0)
7122 *dst_ary++ = sv_dup_inc(*src_ary++);
7123 }
7124 else {
7125 while (items-- > 0)
7126 *dst_ary++ = sv_dup(*src_ary++);
7127 }
7128 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7129 while (items-- > 0) {
7130 *dst_ary++ = &PL_sv_undef;
7131 }
7132 }
7133 else {
7134 SvPVX(dstr) = Nullch;
7135 AvALLOC((AV*)dstr) = (SV**)NULL;
7136 }
7137 break;
7138 case SVt_PVHV:
7139 SvANY(dstr) = new_XPVHV();
7140 SvCUR(dstr) = SvCUR(sstr);
7141 SvLEN(dstr) = SvLEN(sstr);
7142 SvIVX(dstr) = SvIVX(sstr);
7143 SvNVX(dstr) = SvNVX(sstr);
7144 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7145 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7146 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7147 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7148 STRLEN i = 0;
7149 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7150 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7151 Newz(0, dxhv->xhv_array,
7152 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7153 while (i <= sxhv->xhv_max) {
7154 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7155 !!HvSHAREKEYS(sstr));
7156 ++i;
7157 }
7158 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7159 }
7160 else {
7161 SvPVX(dstr) = Nullch;
7162 HvEITER((HV*)dstr) = (HE*)NULL;
7163 }
7164 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7165 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7166 break;
7167 case SVt_PVFM:
7168 SvANY(dstr) = new_XPVFM();
7169 FmLINES(dstr) = FmLINES(sstr);
7170 goto dup_pvcv;
7171 /* NOTREACHED */
7172 case SVt_PVCV:
7173 SvANY(dstr) = new_XPVCV();
7174dup_pvcv:
7175 SvCUR(dstr) = SvCUR(sstr);
7176 SvLEN(dstr) = SvLEN(sstr);
7177 SvIVX(dstr) = SvIVX(sstr);
7178 SvNVX(dstr) = SvNVX(sstr);
7179 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7180 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7181 if (SvPVX(sstr) && SvLEN(sstr))
7182 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7183 else
7184 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7185 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7186 CvSTART(dstr) = CvSTART(sstr);
7187 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7188 CvXSUB(dstr) = CvXSUB(sstr);
7189 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7190 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7191 CvDEPTH(dstr) = CvDEPTH(sstr);
7192 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7193 /* XXX padlists are real, but pretend to be not */
7194 AvREAL_on(CvPADLIST(sstr));
7195 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7196 AvREAL_off(CvPADLIST(sstr));
7197 AvREAL_off(CvPADLIST(dstr));
7198 }
7199 else
7200 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7201 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7202 CvFLAGS(dstr) = CvFLAGS(sstr);
7203 break;
7204 default:
7205 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7206 break;
7207 }
7208
7209 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7210 ++PL_sv_objcount;
7211
7212 return dstr;
7213}
7214
7215PERL_CONTEXT *
7216Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7217{
7218 PERL_CONTEXT *ncxs;
7219
7220 if (!cxs)
7221 return (PERL_CONTEXT*)NULL;
7222
7223 /* look for it in the table first */
7224 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7225 if (ncxs)
7226 return ncxs;
7227
7228 /* create anew and remember what it is */
7229 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7230 ptr_table_store(PL_ptr_table, cxs, ncxs);
7231
7232 while (ix >= 0) {
7233 PERL_CONTEXT *cx = &cxs[ix];
7234 PERL_CONTEXT *ncx = &ncxs[ix];
7235 ncx->cx_type = cx->cx_type;
7236 if (CxTYPE(cx) == CXt_SUBST) {
7237 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7238 }
7239 else {
7240 ncx->blk_oldsp = cx->blk_oldsp;
7241 ncx->blk_oldcop = cx->blk_oldcop;
7242 ncx->blk_oldretsp = cx->blk_oldretsp;
7243 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7244 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7245 ncx->blk_oldpm = cx->blk_oldpm;
7246 ncx->blk_gimme = cx->blk_gimme;
7247 switch (CxTYPE(cx)) {
7248 case CXt_SUB:
7249 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7250 ? cv_dup_inc(cx->blk_sub.cv)
7251 : cv_dup(cx->blk_sub.cv));
7252 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7253 ? av_dup_inc(cx->blk_sub.argarray)
7254 : Nullav);
7255 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7256 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7257 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7258 ncx->blk_sub.lval = cx->blk_sub.lval;
7259 break;
7260 case CXt_EVAL:
7261 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7262 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7263 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7264 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7265 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7266 break;
7267 case CXt_LOOP:
7268 ncx->blk_loop.label = cx->blk_loop.label;
7269 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7270 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7271 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7272 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7273 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7274 ? cx->blk_loop.iterdata
7275 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7276 ncx->blk_loop.oldcurpad
7277 = (SV**)ptr_table_fetch(PL_ptr_table,
7278 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7279 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7280 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7281 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7282 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7283 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7284 break;
7285 case CXt_FORMAT:
7286 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7287 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7288 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7289 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7290 break;
7291 case CXt_BLOCK:
7292 case CXt_NULL:
7293 break;
7294 }
7295 }
7296 --ix;
7297 }
7298 return ncxs;
7299}
7300
7301PERL_SI *
7302Perl_si_dup(pTHX_ PERL_SI *si)
7303{
7304 PERL_SI *nsi;
7305
7306 if (!si)
7307 return (PERL_SI*)NULL;
7308
7309 /* look for it in the table first */
7310 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7311 if (nsi)
7312 return nsi;
7313
7314 /* create anew and remember what it is */
7315 Newz(56, nsi, 1, PERL_SI);
7316 ptr_table_store(PL_ptr_table, si, nsi);
7317
7318 nsi->si_stack = av_dup_inc(si->si_stack);
7319 nsi->si_cxix = si->si_cxix;
7320 nsi->si_cxmax = si->si_cxmax;
7321 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7322 nsi->si_type = si->si_type;
7323 nsi->si_prev = si_dup(si->si_prev);
7324 nsi->si_next = si_dup(si->si_next);
7325 nsi->si_markoff = si->si_markoff;
7326
7327 return nsi;
7328}
7329
7330#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7331#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7332#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7333#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7334#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7335#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7336#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7337#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7338#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7339#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7340#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7341#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7342
7343/* XXXXX todo */
7344#define pv_dup_inc(p) SAVEPV(p)
7345#define pv_dup(p) SAVEPV(p)
7346#define svp_dup_inc(p,pp) any_dup(p,pp)
7347
7348void *
7349Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7350{
7351 void *ret;
7352
7353 if (!v)
7354 return (void*)NULL;
7355
7356 /* look for it in the table first */
7357 ret = ptr_table_fetch(PL_ptr_table, v);
7358 if (ret)
7359 return ret;
7360
7361 /* see if it is part of the interpreter structure */
7362 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7363 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7364 else
7365 ret = v;
7366
7367 return ret;
7368}
7369
7370ANY *
7371Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7372{
7373 ANY *ss = proto_perl->Tsavestack;
7374 I32 ix = proto_perl->Tsavestack_ix;
7375 I32 max = proto_perl->Tsavestack_max;
7376 ANY *nss;
7377 SV *sv;
7378 GV *gv;
7379 AV *av;
7380 HV *hv;
7381 void* ptr;
7382 int intval;
7383 long longval;
7384 GP *gp;
7385 IV iv;
7386 I32 i;
7387 char *c;
7388 void (*dptr) (void*);
7389 void (*dxptr) (pTHXo_ void*);
e977893f 7390 OP *o;
1d7c1841
GS		 7391
7392 Newz(54, nss, max, ANY);
7393
7394 while (ix > 0) {
7395 i = POPINT(ss,ix);
7396 TOPINT(nss,ix) = i;
7397 switch (i) {
7398 case SAVEt_ITEM: /* normal string */
7399 sv = (SV*)POPPTR(ss,ix);
7400 TOPPTR(nss,ix) = sv_dup_inc(sv);
7401 sv = (SV*)POPPTR(ss,ix);
7402 TOPPTR(nss,ix) = sv_dup_inc(sv);
7403 break;
7404 case SAVEt_SV: /* scalar reference */
7405 sv = (SV*)POPPTR(ss,ix);
7406 TOPPTR(nss,ix) = sv_dup_inc(sv);
7407 gv = (GV*)POPPTR(ss,ix);
7408 TOPPTR(nss,ix) = gv_dup_inc(gv);
7409 break;
f4dd75d9
GS		 7410 case SAVEt_GENERIC_PVREF: /* generic char* */
7411 c = (char*)POPPTR(ss,ix);
7412 TOPPTR(nss,ix) = pv_dup(c);
7413 ptr = POPPTR(ss,ix);
7414 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7415 break;
1d7c1841
GS		 7416 case SAVEt_GENERIC_SVREF: /* generic sv */
7417 case SAVEt_SVREF: /* scalar reference */
7418 sv = (SV*)POPPTR(ss,ix);
7419 TOPPTR(nss,ix) = sv_dup_inc(sv);
7420 ptr = POPPTR(ss,ix);
7421 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7422 break;
7423 case SAVEt_AV: /* array reference */
7424 av = (AV*)POPPTR(ss,ix);
7425 TOPPTR(nss,ix) = av_dup_inc(av);
7426 gv = (GV*)POPPTR(ss,ix);
7427 TOPPTR(nss,ix) = gv_dup(gv);
7428 break;
7429 case SAVEt_HV: /* hash reference */
7430 hv = (HV*)POPPTR(ss,ix);
7431 TOPPTR(nss,ix) = hv_dup_inc(hv);
7432 gv = (GV*)POPPTR(ss,ix);
7433 TOPPTR(nss,ix) = gv_dup(gv);
7434 break;
7435 case SAVEt_INT: /* int reference */
7436 ptr = POPPTR(ss,ix);
7437 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7438 intval = (int)POPINT(ss,ix);
7439 TOPINT(nss,ix) = intval;
7440 break;
7441 case SAVEt_LONG: /* long reference */
7442 ptr = POPPTR(ss,ix);
7443 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7444 longval = (long)POPLONG(ss,ix);
7445 TOPLONG(nss,ix) = longval;
7446 break;
7447 case SAVEt_I32: /* I32 reference */
7448 case SAVEt_I16: /* I16 reference */
7449 case SAVEt_I8: /* I8 reference */
7450 ptr = POPPTR(ss,ix);
7451 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7452 i = POPINT(ss,ix);
7453 TOPINT(nss,ix) = i;
7454 break;
7455 case SAVEt_IV: /* IV reference */
7456 ptr = POPPTR(ss,ix);
7457 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7458 iv = POPIV(ss,ix);
7459 TOPIV(nss,ix) = iv;
7460 break;
7461 case SAVEt_SPTR: /* SV* reference */
7462 ptr = POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7464 sv = (SV*)POPPTR(ss,ix);
7465 TOPPTR(nss,ix) = sv_dup(sv);
7466 break;
7467 case SAVEt_VPTR: /* random* reference */
7468 ptr = POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7470 ptr = POPPTR(ss,ix);
7471 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7472 break;
7473 case SAVEt_PPTR: /* char* reference */
7474 ptr = POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7476 c = (char*)POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = pv_dup(c);
7478 break;
7479 case SAVEt_HPTR: /* HV* reference */
7480 ptr = POPPTR(ss,ix);
7481 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7482 hv = (HV*)POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = hv_dup(hv);
7484 break;
7485 case SAVEt_APTR: /* AV* reference */
7486 ptr = POPPTR(ss,ix);
7487 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7488 av = (AV*)POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = av_dup(av);
7490 break;
7491 case SAVEt_NSTAB:
7492 gv = (GV*)POPPTR(ss,ix);
7493 TOPPTR(nss,ix) = gv_dup(gv);
7494 break;
7495 case SAVEt_GP: /* scalar reference */
7496 gp = (GP*)POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = gp = gp_dup(gp);
7498 (void)GpREFCNT_inc(gp);
7499 gv = (GV*)POPPTR(ss,ix);
7500 TOPPTR(nss,ix) = gv_dup_inc(c);
7501 c = (char*)POPPTR(ss,ix);
7502 TOPPTR(nss,ix) = pv_dup(c);
7503 iv = POPIV(ss,ix);
7504 TOPIV(nss,ix) = iv;
7505 iv = POPIV(ss,ix);
7506 TOPIV(nss,ix) = iv;
7507 break;
7508 case SAVEt_FREESV:
7509 sv = (SV*)POPPTR(ss,ix);
7510 TOPPTR(nss,ix) = sv_dup_inc(sv);
7511 break;
7512 case SAVEt_FREEOP:
7513 ptr = POPPTR(ss,ix);
7514 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7515 /* these are assumed to be refcounted properly */
7516 switch (((OP*)ptr)->op_type) {
7517 case OP_LEAVESUB:
7518 case OP_LEAVESUBLV:
7519 case OP_LEAVEEVAL:
7520 case OP_LEAVE:
7521 case OP_SCOPE:
7522 case OP_LEAVEWRITE:
e977893f
GS		 7523 TOPPTR(nss,ix) = ptr;
7524 o = (OP*)ptr;
7525 OpREFCNT_inc(o);
1d7c1841
GS		 7526 break;
7527 default:
7528 TOPPTR(nss,ix) = Nullop;
7529 break;
7530 }
7531 }
7532 else
7533 TOPPTR(nss,ix) = Nullop;
7534 break;
7535 case SAVEt_FREEPV:
7536 c = (char*)POPPTR(ss,ix);
7537 TOPPTR(nss,ix) = pv_dup_inc(c);
7538 break;
7539 case SAVEt_CLEARSV:
7540 longval = POPLONG(ss,ix);
7541 TOPLONG(nss,ix) = longval;
7542 break;
7543 case SAVEt_DELETE:
7544 hv = (HV*)POPPTR(ss,ix);
7545 TOPPTR(nss,ix) = hv_dup_inc(hv);
7546 c = (char*)POPPTR(ss,ix);
7547 TOPPTR(nss,ix) = pv_dup_inc(c);
7548 i = POPINT(ss,ix);
7549 TOPINT(nss,ix) = i;
7550 break;
7551 case SAVEt_DESTRUCTOR:
7552 ptr = POPPTR(ss,ix);
7553 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7554 dptr = POPDPTR(ss,ix);
ef75a179 7555 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7556 break;
7557 case SAVEt_DESTRUCTOR_X:
7558 ptr = POPPTR(ss,ix);
7559 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7560 dxptr = POPDXPTR(ss,ix);
ef75a179 7561 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7562 break;
7563 case SAVEt_REGCONTEXT:
7564 case SAVEt_ALLOC:
7565 i = POPINT(ss,ix);
7566 TOPINT(nss,ix) = i;
7567 ix -= i;
7568 break;
7569 case SAVEt_STACK_POS: /* Position on Perl stack */
7570 i = POPINT(ss,ix);
7571 TOPINT(nss,ix) = i;
7572 break;
7573 case SAVEt_AELEM: /* array element */
7574 sv = (SV*)POPPTR(ss,ix);
7575 TOPPTR(nss,ix) = sv_dup_inc(sv);
7576 i = POPINT(ss,ix);
7577 TOPINT(nss,ix) = i;
7578 av = (AV*)POPPTR(ss,ix);
7579 TOPPTR(nss,ix) = av_dup_inc(av);
7580 break;
7581 case SAVEt_HELEM: /* hash element */
7582 sv = (SV*)POPPTR(ss,ix);
7583 TOPPTR(nss,ix) = sv_dup_inc(sv);
7584 sv = (SV*)POPPTR(ss,ix);
7585 TOPPTR(nss,ix) = sv_dup_inc(sv);
7586 hv = (HV*)POPPTR(ss,ix);
7587 TOPPTR(nss,ix) = hv_dup_inc(hv);
7588 break;
7589 case SAVEt_OP:
7590 ptr = POPPTR(ss,ix);
7591 TOPPTR(nss,ix) = ptr;
7592 break;
7593 case SAVEt_HINTS:
7594 i = POPINT(ss,ix);
7595 TOPINT(nss,ix) = i;
7596 break;
c4410b1b
GS		 7597 case SAVEt_COMPPAD:
7598 av = (AV*)POPPTR(ss,ix);
7599 TOPPTR(nss,ix) = av_dup(av);
7600 break;
1d7c1841
GS		 7601 default:
7602 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7603 }
7604 }
7605
7606 return nss;
7607}
7608
7609#ifdef PERL_OBJECT
7610#include "XSUB.h"
7611#endif
7612
7613PerlInterpreter *
7614perl_clone(PerlInterpreter *proto_perl, UV flags)
7615{
7616#ifdef PERL_OBJECT
7617 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7618#endif
7619
7620#ifdef PERL_IMPLICIT_SYS
7621 return perl_clone_using(proto_perl, flags,
7622 proto_perl->IMem,
7623 proto_perl->IMemShared,
7624 proto_perl->IMemParse,
7625 proto_perl->IEnv,
7626 proto_perl->IStdIO,
7627 proto_perl->ILIO,
7628 proto_perl->IDir,
7629 proto_perl->ISock,
7630 proto_perl->IProc);
7631}
7632
7633PerlInterpreter *
7634perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7635 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7636 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7637 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7638 struct IPerlDir* ipD, struct IPerlSock* ipS,
7639 struct IPerlProc* ipP)
7640{
7641 /* XXX many of the string copies here can be optimized if they're
7642 * constants; they need to be allocated as common memory and just
7643 * their pointers copied. */
7644
7645 IV i;
1d7c1841
GS		 7646# ifdef PERL_OBJECT
7647 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7648 ipD, ipS, ipP);
ba869deb 7649 PERL_SET_THX(pPerl);
1d7c1841
GS		 7650# else /* !PERL_OBJECT */
7651 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7652 PERL_SET_THX(my_perl);
1d7c1841
GS		 7653
7654# ifdef DEBUGGING
7655 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7656 PL_markstack = 0;
7657 PL_scopestack = 0;
7658 PL_savestack = 0;
7659 PL_retstack = 0;
7660# else /* !DEBUGGING */
7661 Zero(my_perl, 1, PerlInterpreter);
7662# endif /* DEBUGGING */
7663
7664 /* host pointers */
7665 PL_Mem = ipM;
7666 PL_MemShared = ipMS;
7667 PL_MemParse = ipMP;
7668 PL_Env = ipE;
7669 PL_StdIO = ipStd;
7670 PL_LIO = ipLIO;
7671 PL_Dir = ipD;
7672 PL_Sock = ipS;
7673 PL_Proc = ipP;
7674# endif /* PERL_OBJECT */
7675#else /* !PERL_IMPLICIT_SYS */
7676 IV i;
1d7c1841 7677 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7678 PERL_SET_THX(my_perl);
1d7c1841
GS		 7679
7680# ifdef DEBUGGING
7681 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7682 PL_markstack = 0;
7683 PL_scopestack = 0;
7684 PL_savestack = 0;
7685 PL_retstack = 0;
7686# else /* !DEBUGGING */
7687 Zero(my_perl, 1, PerlInterpreter);
7688# endif /* DEBUGGING */
7689#endif /* PERL_IMPLICIT_SYS */
7690
7691 /* arena roots */
7692 PL_xiv_arenaroot = NULL;
7693 PL_xiv_root = NULL;
612f20c3 7694 PL_xnv_arenaroot = NULL;
1d7c1841 7695 PL_xnv_root = NULL;
612f20c3 7696 PL_xrv_arenaroot = NULL;
1d7c1841 7697 PL_xrv_root = NULL;
612f20c3 7698 PL_xpv_arenaroot = NULL;
1d7c1841 7699 PL_xpv_root = NULL;
612f20c3 7700 PL_xpviv_arenaroot = NULL;
1d7c1841 7701 PL_xpviv_root = NULL;
612f20c3 7702 PL_xpvnv_arenaroot = NULL;
1d7c1841 7703 PL_xpvnv_root = NULL;
612f20c3 7704 PL_xpvcv_arenaroot = NULL;
1d7c1841 7705 PL_xpvcv_root = NULL;
612f20c3 7706 PL_xpvav_arenaroot = NULL;
1d7c1841 7707 PL_xpvav_root = NULL;
612f20c3 7708 PL_xpvhv_arenaroot = NULL;
1d7c1841 7709 PL_xpvhv_root = NULL;
612f20c3 7710 PL_xpvmg_arenaroot = NULL;
1d7c1841 7711 PL_xpvmg_root = NULL;
612f20c3 7712 PL_xpvlv_arenaroot = NULL;
1d7c1841 7713 PL_xpvlv_root = NULL;
612f20c3 7714 PL_xpvbm_arenaroot = NULL;
1d7c1841 7715 PL_xpvbm_root = NULL;
612f20c3 7716 PL_he_arenaroot = NULL;
1d7c1841
GS		 7717 PL_he_root = NULL;
7718 PL_nice_chunk = NULL;
7719 PL_nice_chunk_size = 0;
7720 PL_sv_count = 0;
7721 PL_sv_objcount = 0;
7722 PL_sv_root = Nullsv;
7723 PL_sv_arenaroot = Nullsv;
7724
7725 PL_debug = proto_perl->Idebug;
7726
7727 /* create SV map for pointer relocation */
7728 PL_ptr_table = ptr_table_new();
7729
7730 /* initialize these special pointers as early as possible */
7731 SvANY(&PL_sv_undef) = NULL;
7732 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7733 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7734 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7735
7736#ifdef PERL_OBJECT
7737 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7738#else
7739 SvANY(&PL_sv_no) = new_XPVNV();
7740#endif
7741 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7742 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7743 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7744 SvCUR(&PL_sv_no) = 0;
7745 SvLEN(&PL_sv_no) = 1;
7746 SvNVX(&PL_sv_no) = 0;
7747 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7748
7749#ifdef PERL_OBJECT
7750 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7751#else
7752 SvANY(&PL_sv_yes) = new_XPVNV();
7753#endif
7754 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7755 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7756 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7757 SvCUR(&PL_sv_yes) = 1;
7758 SvLEN(&PL_sv_yes) = 2;
7759 SvNVX(&PL_sv_yes) = 1;
7760 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7761
7762 /* create shared string table */
7763 PL_strtab = newHV();
7764 HvSHAREKEYS_off(PL_strtab);
7765 hv_ksplit(PL_strtab, 512);
7766 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7767
7768 PL_compiling = proto_perl->Icompiling;
7769 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7770 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7771 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7772 if (!specialWARN(PL_compiling.cop_warnings))
7773 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7774 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7775
7776 /* pseudo environmental stuff */
7777 PL_origargc = proto_perl->Iorigargc;
7778 i = PL_origargc;
7779 New(0, PL_origargv, i+1, char*);
7780 PL_origargv[i] = '\0';
7781 while (i-- > 0) {
7782 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7783 }
7784 PL_envgv = gv_dup(proto_perl->Ienvgv);
7785 PL_incgv = gv_dup(proto_perl->Iincgv);
7786 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7787 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7788 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7789 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7790
7791 /* switches */
7792 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7793 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7794 PL_localpatches = proto_perl->Ilocalpatches;
7795 PL_splitstr = proto_perl->Isplitstr;
7796 PL_preprocess = proto_perl->Ipreprocess;
7797 PL_minus_n = proto_perl->Iminus_n;
7798 PL_minus_p = proto_perl->Iminus_p;
7799 PL_minus_l = proto_perl->Iminus_l;
7800 PL_minus_a = proto_perl->Iminus_a;
7801 PL_minus_F = proto_perl->Iminus_F;
7802 PL_doswitches = proto_perl->Idoswitches;
7803 PL_dowarn = proto_perl->Idowarn;
7804 PL_doextract = proto_perl->Idoextract;
7805 PL_sawampersand = proto_perl->Isawampersand;
7806 PL_unsafe = proto_perl->Iunsafe;
7807 PL_inplace = SAVEPV(proto_perl->Iinplace);
7808 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7809 PL_perldb = proto_perl->Iperldb;
7810 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7811
7812 /* magical thingies */
7813 /* XXX time(&PL_basetime) when asked for? */
7814 PL_basetime = proto_perl->Ibasetime;
7815 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7816
7817 PL_maxsysfd = proto_perl->Imaxsysfd;
7818 PL_multiline = proto_perl->Imultiline;
7819 PL_statusvalue = proto_perl->Istatusvalue;
7820#ifdef VMS
7821 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7822#endif
7823
7824 /* shortcuts to various I/O objects */
7825 PL_stdingv = gv_dup(proto_perl->Istdingv);
7826 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7827 PL_defgv = gv_dup(proto_perl->Idefgv);
7828 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7829 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7830 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7831
7832 /* shortcuts to regexp stuff */
7833 PL_replgv = gv_dup(proto_perl->Ireplgv);
7834
7835 /* shortcuts to misc objects */
7836 PL_errgv = gv_dup(proto_perl->Ierrgv);
7837
7838 /* shortcuts to debugging objects */
7839 PL_DBgv = gv_dup(proto_perl->IDBgv);
7840 PL_DBline = gv_dup(proto_perl->IDBline);
7841 PL_DBsub = gv_dup(proto_perl->IDBsub);
7842 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7843 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7844 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7845 PL_lineary = av_dup(proto_perl->Ilineary);
7846 PL_dbargs = av_dup(proto_perl->Idbargs);
7847
7848 /* symbol tables */
7849 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7850 PL_curstash = hv_dup(proto_perl->Tcurstash);
7851 PL_debstash = hv_dup(proto_perl->Idebstash);
7852 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7853 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7854
7855 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7856 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7857 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7858 PL_initav = av_dup_inc(proto_perl->Iinitav);
7859
7860 PL_sub_generation = proto_perl->Isub_generation;
7861
7862 /* funky return mechanisms */
7863 PL_forkprocess = proto_perl->Iforkprocess;
7864
7865 /* subprocess state */
7866 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7867
7868 /* internal state */
7869 PL_tainting = proto_perl->Itainting;
7870 PL_maxo = proto_perl->Imaxo;
7871 if (proto_perl->Iop_mask)
7872 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7873 else
7874 PL_op_mask = Nullch;
7875
7876 /* current interpreter roots */
7877 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7878 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7879 PL_main_start = proto_perl->Imain_start;
e977893f 7880 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7881 PL_eval_start = proto_perl->Ieval_start;
7882
7883 /* runtime control stuff */
7884 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7885 PL_copline = proto_perl->Icopline;
7886
7887 PL_filemode = proto_perl->Ifilemode;
7888 PL_lastfd = proto_perl->Ilastfd;
7889 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7890 PL_Argv = NULL;
7891 PL_Cmd = Nullch;
7892 PL_gensym = proto_perl->Igensym;
7893 PL_preambled = proto_perl->Ipreambled;
7894 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7895 PL_laststatval = proto_perl->Ilaststatval;
7896 PL_laststype = proto_perl->Ilaststype;
7897 PL_mess_sv = Nullsv;
7898
7899 PL_orslen = proto_perl->Iorslen;
7900 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7901 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7902
7903 /* interpreter atexit processing */
7904 PL_exitlistlen = proto_perl->Iexitlistlen;
7905 if (PL_exitlistlen) {
7906 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7907 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7908 }
7909 else
7910 PL_exitlist = (PerlExitListEntry*)NULL;
7911 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7912
7913 PL_profiledata = NULL;
7914 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7915 /* PL_rsfp_filters entries have fake IoDIRP() */
7916 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7917
7918 PL_compcv = cv_dup(proto_perl->Icompcv);
7919 PL_comppad = av_dup(proto_perl->Icomppad);
7920 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7921 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7922 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7923 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7924 proto_perl->Tcurpad);
7925
7926#ifdef HAVE_INTERP_INTERN
7927 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7928#endif
7929
7930 /* more statics moved here */
7931 PL_generation = proto_perl->Igeneration;
7932 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 7933
7934 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7935 PL_in_clean_all = proto_perl->Iin_clean_all;
7936
7937 PL_uid = proto_perl->Iuid;
7938 PL_euid = proto_perl->Ieuid;
7939 PL_gid = proto_perl->Igid;
7940 PL_egid = proto_perl->Iegid;
7941 PL_nomemok = proto_perl->Inomemok;
7942 PL_an = proto_perl->Ian;
7943 PL_cop_seqmax = proto_perl->Icop_seqmax;
7944 PL_op_seqmax = proto_perl->Iop_seqmax;
7945 PL_evalseq = proto_perl->Ievalseq;
7946 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7947 PL_origalen = proto_perl->Iorigalen;
7948 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7949 PL_osname = SAVEPV(proto_perl->Iosname);
7950 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7951 PL_sighandlerp = proto_perl->Isighandlerp;
7952
7953
7954 PL_runops = proto_perl->Irunops;
7955
7956 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7957
7958#ifdef CSH
7959 PL_cshlen = proto_perl->Icshlen;
7960 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7961#endif
7962
7963 PL_lex_state = proto_perl->Ilex_state;
7964 PL_lex_defer = proto_perl->Ilex_defer;
7965 PL_lex_expect = proto_perl->Ilex_expect;
7966 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7967 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7968 PL_lex_starts = proto_perl->Ilex_starts;
7969 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7970 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7971 PL_lex_op = proto_perl->Ilex_op;
7972 PL_lex_inpat = proto_perl->Ilex_inpat;
7973 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7974 PL_lex_brackets = proto_perl->Ilex_brackets;
7975 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7976 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7977 PL_lex_casemods = proto_perl->Ilex_casemods;
7978 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7979 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7980
7981 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7982 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7983 PL_nexttoke = proto_perl->Inexttoke;
7984
7985 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
7986 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
7987 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7988 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
7989 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7990 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
7991 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7992 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
7993 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
7994 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7995 PL_pending_ident = proto_perl->Ipending_ident;
7996 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
7997
7998 PL_expect = proto_perl->Iexpect;
7999
8000 PL_multi_start = proto_perl->Imulti_start;
8001 PL_multi_end = proto_perl->Imulti_end;
8002 PL_multi_open = proto_perl->Imulti_open;
8003 PL_multi_close = proto_perl->Imulti_close;
8004
8005 PL_error_count = proto_perl->Ierror_count;
8006 PL_subline = proto_perl->Isubline;
8007 PL_subname = sv_dup_inc(proto_perl->Isubname);
8008
8009 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8010 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8011 PL_padix = proto_perl->Ipadix;
8012 PL_padix_floor = proto_perl->Ipadix_floor;
8013 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8014
8015 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8016 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8017 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8018 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8019 PL_last_lop_op = proto_perl->Ilast_lop_op;
8020 PL_in_my = proto_perl->Iin_my;
8021 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8022#ifdef FCRYPT
8023 PL_cryptseen = proto_perl->Icryptseen;
8024#endif
8025
8026 PL_hints = proto_perl->Ihints;
8027
8028 PL_amagic_generation = proto_perl->Iamagic_generation;
8029
8030#ifdef USE_LOCALE_COLLATE
8031 PL_collation_ix = proto_perl->Icollation_ix;
8032 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8033 PL_collation_standard = proto_perl->Icollation_standard;
8034 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8035 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8036#endif /* USE_LOCALE_COLLATE */
8037
8038#ifdef USE_LOCALE_NUMERIC
8039 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8040 PL_numeric_standard = proto_perl->Inumeric_standard;
8041 PL_numeric_local = proto_perl->Inumeric_local;
8042 PL_numeric_radix = proto_perl->Inumeric_radix;
8043#endif /* !USE_LOCALE_NUMERIC */
8044
8045 /* utf8 character classes */
8046 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8047 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8048 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8049 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8050 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8051 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8052 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8053 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8054 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8055 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8056 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8057 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8058 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8059 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8060 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8061 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8062 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8063
8064 /* swatch cache */
8065 PL_last_swash_hv = Nullhv; /* reinits on demand */
8066 PL_last_swash_klen = 0;
8067 PL_last_swash_key[0]= '\0';
8068 PL_last_swash_tmps = (U8*)NULL;
8069 PL_last_swash_slen = 0;
8070
8071 /* perly.c globals */
8072 PL_yydebug = proto_perl->Iyydebug;
8073 PL_yynerrs = proto_perl->Iyynerrs;
8074 PL_yyerrflag = proto_perl->Iyyerrflag;
8075 PL_yychar = proto_perl->Iyychar;
8076 PL_yyval = proto_perl->Iyyval;
8077 PL_yylval = proto_perl->Iyylval;
8078
8079 PL_glob_index = proto_perl->Iglob_index;
8080 PL_srand_called = proto_perl->Isrand_called;
8081 PL_uudmap['M'] = 0; /* reinits on demand */
8082 PL_bitcount = Nullch; /* reinits on demand */
8083
8084 if (proto_perl->Ipsig_ptr) {
8085 int sig_num[] = { SIG_NUM };
8086 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8087 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8088 for (i = 1; PL_sig_name[i]; i++) {
8089 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8090 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8091 }
8092 }
8093 else {
8094 PL_psig_ptr = (SV**)NULL;
8095 PL_psig_name = (SV**)NULL;
8096 }
8097
8098 /* thrdvar.h stuff */
8099
8100 if (flags & 1) {
8101 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8102 PL_tmps_ix = proto_perl->Ttmps_ix;
8103 PL_tmps_max = proto_perl->Ttmps_max;
8104 PL_tmps_floor = proto_perl->Ttmps_floor;
8105 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8106 i = 0;
8107 while (i <= PL_tmps_ix) {
8108 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8109 ++i;
8110 }
8111
8112 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8113 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8114 Newz(54, PL_markstack, i, I32);
8115 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8116 - proto_perl->Tmarkstack);
8117 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8118 - proto_perl->Tmarkstack);
8119 Copy(proto_perl->Tmarkstack, PL_markstack,
8120 PL_markstack_ptr - PL_markstack + 1, I32);
8121
8122 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8123 * NOTE: unlike the others! */
8124 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8125 PL_scopestack_max = proto_perl->Tscopestack_max;
8126 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8127 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8128
8129 /* next push_return() sets PL_retstack[PL_retstack_ix]
8130 * NOTE: unlike the others! */
8131 PL_retstack_ix = proto_perl->Tretstack_ix;
8132 PL_retstack_max = proto_perl->Tretstack_max;
8133 Newz(54, PL_retstack, PL_retstack_max, OP*);
8134 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8135
8136 /* NOTE: si_dup() looks at PL_markstack */
8137 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8138
8139 /* PL_curstack = PL_curstackinfo->si_stack; */
8140 PL_curstack = av_dup(proto_perl->Tcurstack);
8141 PL_mainstack = av_dup(proto_perl->Tmainstack);
8142
8143 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8144 PL_stack_base = AvARRAY(PL_curstack);
8145 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8146 - proto_perl->Tstack_base);
8147 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8148
8149 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8150 * NOTE: unlike the others! */
8151 PL_savestack_ix = proto_perl->Tsavestack_ix;
8152 PL_savestack_max = proto_perl->Tsavestack_max;
8153 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8154 PL_savestack = ss_dup(proto_perl);
8155 }
8156 else {
8157 init_stacks();
985e7056 8158 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8159 }
8160
8161 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8162 PL_top_env = &PL_start_env;
8163
8164 PL_op = proto_perl->Top;
8165
8166 PL_Sv = Nullsv;
8167 PL_Xpv = (XPV*)NULL;
8168 PL_na = proto_perl->Tna;
8169
8170 PL_statbuf = proto_perl->Tstatbuf;
8171 PL_statcache = proto_perl->Tstatcache;
8172 PL_statgv = gv_dup(proto_perl->Tstatgv);
8173 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8174#ifdef HAS_TIMES
8175 PL_timesbuf = proto_perl->Ttimesbuf;
8176#endif
8177
8178 PL_tainted = proto_perl->Ttainted;
8179 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8180 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8181 PL_rs = sv_dup_inc(proto_perl->Trs);
8182 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8183 PL_ofslen = proto_perl->Tofslen;
8184 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8185 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8186 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8187 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8188 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8189 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8190
8191 PL_restartop = proto_perl->Trestartop;
8192 PL_in_eval = proto_perl->Tin_eval;
8193 PL_delaymagic = proto_perl->Tdelaymagic;
8194 PL_dirty = proto_perl->Tdirty;
8195 PL_localizing = proto_perl->Tlocalizing;
8196
14dd3ad8 8197#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8198 PL_protect = proto_perl->Tprotect;
14dd3ad8 8199#endif
1d7c1841
GS		 8200 PL_errors = sv_dup_inc(proto_perl->Terrors);
8201 PL_av_fetch_sv = Nullsv;
8202 PL_hv_fetch_sv = Nullsv;
8203 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8204 PL_modcount = proto_perl->Tmodcount;
8205 PL_lastgotoprobe = Nullop;
8206 PL_dumpindent = proto_perl->Tdumpindent;
8207
8208 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8209 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8210 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8211 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8212 PL_sortcxix = proto_perl->Tsortcxix;
8213 PL_efloatbuf = Nullch; /* reinits on demand */
8214 PL_efloatsize = 0; /* reinits on demand */
8215
8216 /* regex stuff */
8217
8218 PL_screamfirst = NULL;
8219 PL_screamnext = NULL;
8220 PL_maxscream = -1; /* reinits on demand */
8221 PL_lastscream = Nullsv;
8222
8223 PL_watchaddr = NULL;
8224 PL_watchok = Nullch;
8225
8226 PL_regdummy = proto_perl->Tregdummy;
8227 PL_regcomp_parse = Nullch;
8228 PL_regxend = Nullch;
8229 PL_regcode = (regnode*)NULL;
8230 PL_regnaughty = 0;
8231 PL_regsawback = 0;
8232 PL_regprecomp = Nullch;
8233 PL_regnpar = 0;
8234 PL_regsize = 0;
8235 PL_regflags = 0;
8236 PL_regseen = 0;
8237 PL_seen_zerolen = 0;
8238 PL_seen_evals = 0;
8239 PL_regcomp_rx = (regexp*)NULL;
8240 PL_extralen = 0;
8241 PL_colorset = 0; /* reinits PL_colors[] */
8242 /*PL_colors[6] = {0,0,0,0,0,0};*/
8243 PL_reg_whilem_seen = 0;
8244 PL_reginput = Nullch;
8245 PL_regbol = Nullch;
8246 PL_regeol = Nullch;
8247 PL_regstartp = (I32*)NULL;
8248 PL_regendp = (I32*)NULL;
8249 PL_reglastparen = (U32*)NULL;
8250 PL_regtill = Nullch;
8251 PL_regprev = '\n';
8252 PL_reg_start_tmp = (char**)NULL;
8253 PL_reg_start_tmpl = 0;
8254 PL_regdata = (struct reg_data*)NULL;
8255 PL_bostr = Nullch;
8256 PL_reg_flags = 0;
8257 PL_reg_eval_set = 0;
8258 PL_regnarrate = 0;
8259 PL_regprogram = (regnode*)NULL;
8260 PL_regindent = 0;
8261 PL_regcc = (CURCUR*)NULL;
8262 PL_reg_call_cc = (struct re_cc_state*)NULL;
8263 PL_reg_re = (regexp*)NULL;
8264 PL_reg_ganch = Nullch;
8265 PL_reg_sv = Nullsv;
8266 PL_reg_magic = (MAGIC*)NULL;
8267 PL_reg_oldpos = 0;
8268 PL_reg_oldcurpm = (PMOP*)NULL;
8269 PL_reg_curpm = (PMOP*)NULL;
8270 PL_reg_oldsaved = Nullch;
8271 PL_reg_oldsavedlen = 0;
8272 PL_reg_maxiter = 0;
8273 PL_reg_leftiter = 0;
8274 PL_reg_poscache = Nullch;
8275 PL_reg_poscache_size= 0;
8276
8277 /* RE engine - function pointers */
8278 PL_regcompp = proto_perl->Tregcompp;
8279 PL_regexecp = proto_perl->Tregexecp;
8280 PL_regint_start = proto_perl->Tregint_start;
8281 PL_regint_string = proto_perl->Tregint_string;
8282 PL_regfree = proto_perl->Tregfree;
8283
8284 PL_reginterp_cnt = 0;
8285 PL_reg_starttry = 0;
8286
8287#ifdef PERL_OBJECT
8288 return (PerlInterpreter*)pPerl;
8289#else
8290 return my_perl;
8291#endif
8292}
8293
8294#else /* !USE_ITHREADS */
51371543
GS		 8295
8296#ifdef PERL_OBJECT
51371543
GS		 8297#include "XSUB.h"
8298#endif
8299
1d7c1841
GS		 8300#endif /* USE_ITHREADS */
8301
51371543
GS		 8302static void
8303do_report_used(pTHXo_ SV *sv)
8304{
8305 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8306 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8307 sv_dump(sv);
8308 }
8309}
8310
8311static void
8312do_clean_objs(pTHXo_ SV *sv)
8313{
8314 SV* rv;
8315
8316 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8317 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8318 SvROK_off(sv);
8319 SvRV(sv) = 0;
8320 SvREFCNT_dec(rv);
8321 }
8322
8323 /* XXX Might want to check arrays, etc. */
8324}
8325
8326#ifndef DISABLE_DESTRUCTOR_KLUDGE
8327static void
8328do_clean_named_objs(pTHXo_ SV *sv)
8329{
f472eb5c 8330 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8331 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8332 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8333 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8334 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8335 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8336 {
8337 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8338 SvREFCNT_dec(sv);
8339 }
8340 }
8341}
8342#endif
8343
8344static void
8345do_clean_all(pTHXo_ SV *sv)
8346{
1d7c1841 8347 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8348 SvFLAGS(sv) |= SVf_BREAK;
8349 SvREFCNT_dec(sv);
8350}
8351
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