3 * Copyright (c) 1991-1994, Larry Wall
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.
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
18 /* Use an overridden DBL_DIG */
22 # define DBL_DIG OVR_DBL_DIG
24 /* The following is all to get DBL_DIG, in order to pick a nice
25 default value for printing floating point numbers in Gconvert.
35 #define DBL_DIG 15 /* A guess that works lots of places */
39 #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) && !defined(__QNX__)
43 static SV *more_sv _((void));
44 static XPVIV *more_xiv _((void));
45 static XPVNV *more_xnv _((void));
46 static XPV *more_xpv _((void));
47 static XRV *more_xrv _((void));
48 static XPVIV *new_xiv _((void));
49 static XPVNV *new_xnv _((void));
50 static XPV *new_xpv _((void));
51 static XRV *new_xrv _((void));
52 static void del_xiv _((XPVIV* p));
53 static void del_xnv _((XPVNV* p));
54 static void del_xpv _((XPV* p));
55 static void del_xrv _((XRV* p));
56 static void sv_mortalgrow _((void));
57 static void sv_unglob _((SV* sv));
59 typedef void (*SVFUNC) _((SV*));
65 (p) = (SV*)safemalloc(sizeof(SV)); \
78 #define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size))
80 #define REG_REPLACE(sv,a,b) \
82 void* p = sv->sv_any; \
83 I32 h = REGHASH(sv, regsize); \
85 while (registry[i] != (a)) { \
89 die("SV registry bug"); \
94 #define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv)
95 #define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv)
101 if (sv_count >= (regsize >> 1))
103 SV **oldreg = registry;
104 I32 oldsize = regsize;
106 regsize = regsize ? ((regsize << 2) + 1) : 2037;
107 registry = (SV**)safemalloc(regsize * sizeof(SV*));
108 memzero(registry, regsize * sizeof(SV*));
113 for (i = 0; i < oldsize; ++i) {
114 SV* oldsv = oldreg[i];
140 for (i = 0; i < regsize; ++i) {
141 SV* sv = registry[i];
148 sv_add_arena(ptr, size, flags)
153 if (!(flags & SVf_FAKE))
160 * "A time to plant, and a time to uproot what was planted..."
163 #define plant_SV(p) \
165 SvANY(p) = (void *)sv_root; \
166 SvFLAGS(p) = SVTYPEMASK; \
171 #define uproot_SV(p) \
174 sv_root = (SV*)SvANY(p); \
201 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
203 svend = &sva[SvREFCNT(sva)];
204 if (p >= sv && p < svend)
208 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
215 #else /* ! DEBUGGING */
217 #define del_SV(p) plant_SV(p)
219 #endif /* DEBUGGING */
222 sv_add_arena(ptr, size, flags)
230 Zero(sva, size, char);
232 /* The first SV in an arena isn't an SV. */
233 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
234 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
235 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
240 svend = &sva[SvREFCNT(sva) - 1];
243 SvANY(sv) = (void *)(SV*)(sv + 1);
244 SvFLAGS(sv) = SVTYPEMASK;
248 SvFLAGS(sv) = SVTYPEMASK;
257 sv_add_arena(nice_chunk, nice_chunk_size, 0);
261 char *chunk; /* must use New here to match call to */
262 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
263 sv_add_arena(chunk, 1008, 0);
277 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
278 svend = &sva[SvREFCNT(sva)];
279 for (sv = sva + 1; sv < svend; ++sv) {
280 if (SvTYPE(sv) != SVTYPEMASK)
292 if (SvTYPE(sv) != SVTYPEMASK) {
293 PerlIO_printf(PerlIO_stderr(), "****\n");
301 visit(do_report_used);
310 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
311 DEBUG_D((PerlIO_printf(PerlIO_stderr(), "Cleaning object ref:\n "), sv_dump(sv));)
317 /* XXX Might want to check arrays, etc. */
320 #ifndef DISABLE_DESTRUCTOR_KLUDGE
322 do_clean_named_objs(sv)
325 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
326 do_clean_objs(GvSV(sv));
333 #ifndef DISABLE_DESTRUCTOR_KLUDGE
334 visit(do_clean_named_objs);
336 visit(do_clean_objs);
343 DEBUG_D((PerlIO_printf(PerlIO_stderr(), "Cleaning loops:\n "), sv_dump(sv));)
344 SvFLAGS(sv) |= SVf_BREAK;
348 static int in_clean_all = 0;
364 /* Free arenas here, but be careful about fake ones. (We assume
365 contiguity of the fake ones with the corresponding real ones.) */
367 for (sva = sv_arenaroot; sva; sva = svanext) {
368 svanext = (SV*) SvANY(sva);
369 while (svanext && SvFAKE(svanext))
370 svanext = (SV*) SvANY(svanext);
373 Safefree((void *)sva);
384 * See comment in more_xiv() -- RAM.
386 xiv_root = (IV**)*xiv;
387 return (XPVIV*)((char*)xiv - sizeof(XPV));
396 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
397 *xiv = (IV *)xiv_root;
405 register IV** xivend;
406 XPV* ptr = (XPV*)safemalloc(1008);
407 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
408 xiv_arenaroot = ptr; /* to keep Purify happy */
411 xivend = &xiv[1008 / sizeof(IV *) - 1];
412 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
414 while (xiv < xivend) {
415 *xiv = (IV *)(xiv + 1);
428 xnv_root = *(double**)xnv;
429 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
438 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
439 *(double**)xnv = xnv_root;
446 register double* xnv;
447 register double* xnvend;
448 xnv = (double*)safemalloc(1008);
449 xnvend = &xnv[1008 / sizeof(double) - 1];
450 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
452 while (xnv < xnvend) {
453 *(double**)xnv = (double*)(xnv + 1);
466 xrv_root = (XRV*)xrv->xrv_rv;
476 p->xrv_rv = (SV*)xrv_root;
484 register XRV* xrvend;
485 xrv_root = (XRV*)safemalloc(1008);
487 xrvend = &xrv[1008 / sizeof(XRV) - 1];
488 while (xrv < xrvend) {
489 xrv->xrv_rv = (SV*)(xrv + 1);
502 xpv_root = (XPV*)xpv->xpv_pv;
512 p->xpv_pv = (char*)xpv_root;
520 register XPV* xpvend;
521 xpv_root = (XPV*)safemalloc(1008);
523 xpvend = &xpv[1008 / sizeof(XPV) - 1];
524 while (xpv < xpvend) {
525 xpv->xpv_pv = (char*)(xpv + 1);
533 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
534 #define del_XIV(p) free((char*)p)
536 #define new_XIV() (void*)new_xiv()
537 #define del_XIV(p) del_xiv(p)
541 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
542 #define del_XNV(p) free((char*)p)
544 #define new_XNV() (void*)new_xnv()
545 #define del_XNV(p) del_xnv(p)
549 #define new_XRV() (void*)safemalloc(sizeof(XRV))
550 #define del_XRV(p) free((char*)p)
552 #define new_XRV() (void*)new_xrv()
553 #define del_XRV(p) del_xrv(p)
557 #define new_XPV() (void*)safemalloc(sizeof(XPV))
558 #define del_XPV(p) free((char*)p)
560 #define new_XPV() (void*)new_xpv()
561 #define del_XPV(p) del_xpv(p)
564 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
565 #define del_XPVIV(p) free((char*)p)
567 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
568 #define del_XPVNV(p) free((char*)p)
570 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
571 #define del_XPVMG(p) free((char*)p)
573 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
574 #define del_XPVLV(p) free((char*)p)
576 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
577 #define del_XPVAV(p) free((char*)p)
579 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
580 #define del_XPVHV(p) free((char*)p)
582 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
583 #define del_XPVCV(p) free((char*)p)
585 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
586 #define del_XPVGV(p) free((char*)p)
588 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
589 #define del_XPVBM(p) free((char*)p)
591 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
592 #define del_XPVFM(p) free((char*)p)
594 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
595 #define del_XPVIO(p) free((char*)p)
610 if (SvTYPE(sv) == mt)
616 switch (SvTYPE(sv)) {
631 nv = (double)SvIVX(sv);
637 else if (mt < SVt_PVIV)
654 pv = (char*)SvRV(sv);
658 nv = (double)(unsigned long)pv;
674 else if (mt == SVt_NV)
685 del_XPVIV(SvANY(sv));
695 del_XPVNV(SvANY(sv));
705 del_XPVMG(SvANY(sv));
708 croak("Can't upgrade that kind of scalar");
713 croak("Can't upgrade to undef");
715 SvANY(sv) = new_XIV();
719 SvANY(sv) = new_XNV();
723 SvANY(sv) = new_XRV();
727 SvANY(sv) = new_XPV();
733 SvANY(sv) = new_XPVIV();
743 SvANY(sv) = new_XPVNV();
751 SvANY(sv) = new_XPVMG();
761 SvANY(sv) = new_XPVLV();
775 SvANY(sv) = new_XPVAV();
790 SvANY(sv) = new_XPVHV();
806 SvANY(sv) = new_XPVCV();
807 Zero(SvANY(sv), 1, XPVCV);
817 SvANY(sv) = new_XPVGV();
832 SvANY(sv) = new_XPVBM();
845 SvANY(sv) = new_XPVFM();
846 Zero(SvANY(sv), 1, XPVFM);
856 SvANY(sv) = new_XPVIO();
857 Zero(SvANY(sv), 1, XPVIO);
868 SvFLAGS(sv) &= ~SVTYPEMASK;
886 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
890 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
891 if (sv == &sv_undef) {
892 strcpy(t, "SV_UNDEF");
893 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
894 SVs_GMG|SVs_SMG|SVs_RMG)) &&
898 else if (sv == &sv_no) {
900 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
901 SVs_GMG|SVs_SMG|SVs_RMG)) &&
902 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
910 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
911 SVs_GMG|SVs_SMG|SVs_RMG)) &&
912 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
915 SvPVX(sv) && *SvPVX(sv) == '1' &&
922 else if (SvREFCNT(sv) == 0) {
928 if (t - tokenbuf + unref > 10) {
929 strcpy(tokenbuf + unref + 3,"...");
935 switch (SvTYPE(sv)) {
975 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
998 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1000 sprintf(t,"(\"%.127s\")",SvPVX(sv));
1002 else if (SvNOKp(sv))
1003 sprintf(t,"(%g)",SvNVX(sv));
1004 else if (SvIOKp(sv))
1005 sprintf(t,"(%ld)",(long)SvIVX(sv));
1026 char *s = SvPVX(sv);
1027 SvLEN(sv) += SvIVX(sv);
1028 SvPVX(sv) -= SvIVX(sv);
1030 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1032 SvFLAGS(sv) &= ~SVf_OOK;
1040 register I32 newlen;
1042 unsigned long newlen;
1048 if (newlen >= 0x10000) {
1049 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", newlen);
1055 if (SvTYPE(sv) < SVt_PV) {
1056 sv_upgrade(sv, SVt_PV);
1059 else if (SvOOK(sv)) { /* pv is offset? */
1062 if (newlen > SvLEN(sv))
1063 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1067 if (newlen > SvLEN(sv)) { /* need more room? */
1069 Renew(s,newlen,char);
1071 New(703,s,newlen,char);
1073 SvLEN_set(sv, newlen);
1083 if (SvTHINKFIRST(sv)) {
1084 if (SvREADONLY(sv) && curcop != &compiling)
1089 switch (SvTYPE(sv)) {
1091 sv_upgrade(sv, SVt_IV);
1094 sv_upgrade(sv, SVt_PVNV);
1098 sv_upgrade(sv, SVt_PVIV);
1112 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1113 op_name[op->op_type]);
1115 (void)SvIOK_only(sv); /* validate number */
1125 if (SvTHINKFIRST(sv)) {
1126 if (SvREADONLY(sv) && curcop != &compiling)
1131 switch (SvTYPE(sv)) {
1134 sv_upgrade(sv, SVt_NV);
1140 sv_upgrade(sv, SVt_PVNV);
1147 (void)SvOOK_off(sv);
1160 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1161 op_name[op->op_type]);
1164 (void)SvNOK_only(sv); /* validate number */
1177 for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
1179 if (ch & 128 && !isprint(ch)) {
1199 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1200 op_name[op->op_type]);
1202 warn("Argument \"%s\" isn't numeric", tmpbuf);
1211 if (SvGMAGICAL(sv)) {
1216 if (SvNVX(sv) < 0.0)
1217 return I_V(SvNVX(sv));
1219 return (IV) U_V(SvNVX(sv));
1221 if (SvPOKp(sv) && SvLEN(sv)) {
1222 if (dowarn && !looks_like_number(sv))
1224 return (IV)atol(SvPVX(sv));
1230 if (SvTHINKFIRST(sv)) {
1234 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1235 return SvIV(tmpstr);
1236 #endif /* OVERLOAD */
1237 return (IV)SvRV(sv);
1239 if (SvREADONLY(sv)) {
1241 if (SvNVX(sv) < 0.0)
1242 return I_V(SvNVX(sv));
1244 return (IV) U_V(SvNVX(sv));
1246 if (SvPOKp(sv) && SvLEN(sv)) {
1247 if (dowarn && !looks_like_number(sv))
1249 return (IV)atol(SvPVX(sv));
1256 switch (SvTYPE(sv)) {
1258 sv_upgrade(sv, SVt_IV);
1261 sv_upgrade(sv, SVt_PVIV);
1264 sv_upgrade(sv, SVt_PVNV);
1269 if (SvNVX(sv) < 0.0)
1270 SvIVX(sv) = I_V(SvNVX(sv));
1272 SvIVX(sv) = (IV) U_V(SvNVX(sv));
1274 else if (SvPOKp(sv) && SvLEN(sv)) {
1275 if (dowarn && !looks_like_number(sv))
1278 SvIVX(sv) = (IV)atol(SvPVX(sv));
1281 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1286 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1287 (unsigned long)sv,(long)SvIVX(sv)));
1297 if (SvGMAGICAL(sv)) {
1301 if (SvPOKp(sv) && SvLEN(sv)) {
1302 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1304 return atof(SvPVX(sv));
1307 return (double)SvIVX(sv);
1312 if (SvTHINKFIRST(sv)) {
1316 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1317 return SvNV(tmpstr);
1318 #endif /* OVERLOAD */
1319 return (double)(unsigned long)SvRV(sv);
1321 if (SvREADONLY(sv)) {
1322 if (SvPOKp(sv) && SvLEN(sv)) {
1323 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1325 return atof(SvPVX(sv));
1328 return (double)SvIVX(sv);
1334 if (SvTYPE(sv) < SVt_NV) {
1335 if (SvTYPE(sv) == SVt_IV)
1336 sv_upgrade(sv, SVt_PVNV);
1338 sv_upgrade(sv, SVt_NV);
1339 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1341 else if (SvTYPE(sv) < SVt_PVNV)
1342 sv_upgrade(sv, SVt_PVNV);
1344 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1346 SvNVX(sv) = (double)SvIVX(sv);
1348 else if (SvPOKp(sv) && SvLEN(sv)) {
1349 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1351 SvNVX(sv) = atof(SvPVX(sv));
1354 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1359 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1375 if (SvGMAGICAL(sv)) {
1382 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1386 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1394 if (SvTHINKFIRST(sv)) {
1398 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1399 return SvPV(tmpstr,*lp);
1400 #endif /* OVERLOAD */
1405 switch (SvTYPE(sv)) {
1414 case SVt_PVMG: s = "SCALAR"; break;
1415 case SVt_PVLV: s = "LVALUE"; break;
1416 case SVt_PVAV: s = "ARRAY"; break;
1417 case SVt_PVHV: s = "HASH"; break;
1418 case SVt_PVCV: s = "CODE"; break;
1419 case SVt_PVGV: s = "GLOB"; break;
1420 case SVt_PVFM: s = "FORMATLINE"; break;
1421 case SVt_PVIO: s = "FILEHANDLE"; break;
1422 default: s = "UNKNOWN"; break;
1425 sprintf(tokenbuf, "%s=%s(0x%lx)",
1426 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1428 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1434 if (SvREADONLY(sv)) {
1436 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1440 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1449 if (!SvUPGRADE(sv, SVt_PV))
1452 if (SvTYPE(sv) < SVt_PVNV)
1453 sv_upgrade(sv, SVt_PVNV);
1456 olderrno = errno; /* some Xenix systems wipe out errno here */
1458 if (SvNVX(sv) == 0.0)
1459 (void)strcpy(s,"0");
1462 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1464 #ifdef FIXNEGATIVEZERO
1465 if (*s == '-' && s[1] == '0' && !s[2])
1474 else if (SvIOKp(sv)) {
1475 if (SvTYPE(sv) < SVt_PVIV)
1476 sv_upgrade(sv, SVt_PVIV);
1479 olderrno = errno; /* some Xenix systems wipe out errno here */
1480 (void)sprintf(s,"%ld",(long)SvIVX(sv));
1485 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1491 *lp = s - SvPVX(sv);
1494 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1498 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1499 /* Sneaky stuff here */
1502 sv = sv_newmortal();
1503 *lp = strlen(tokenbuf);
1504 sv_setpvn(sv, tokenbuf, *lp);
1510 #ifdef FIXNEGATIVEZERO
1511 if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
1512 strcpy(tokenbuf,"0");
1514 (void)SvUPGRADE(sv, SVt_PV);
1515 len = *lp = strlen(tokenbuf);
1516 s = SvGROW(sv, len + 1);
1518 (void)strcpy(s, tokenbuf);
1519 /* NO SvPOK_on(sv) here! */
1524 /* This function is only called on magical items */
1538 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1539 return SvTRUE(tmpsv);
1541 #endif /* OVERLOAD */
1542 return SvRV(sv) != 0;
1546 if ((Xpv = (XPV*)SvANY(sv)) &&
1547 (*Xpv->xpv_pv > '0' ||
1549 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1556 return SvIVX(sv) != 0;
1559 return SvNVX(sv) != 0.0;
1566 /* Note: sv_setsv() should not be called with a source string that needs
1567 * to be reused, since it may destroy the source string if it is marked
1576 register U32 sflags;
1582 if (SvTHINKFIRST(dstr)) {
1583 if (SvREADONLY(dstr) && curcop != &compiling)
1590 stype = SvTYPE(sstr);
1591 dtype = SvTYPE(dstr);
1593 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1594 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1595 sv_setpvn(dstr, "", 0);
1596 (void)SvPOK_only(dstr);
1597 dtype = SvTYPE(dstr);
1602 #endif /* OVERLOAD */
1603 /* There's a lot of redundancy below but we're going for speed here */
1607 (void)SvOK_off(dstr);
1610 if (dtype <= SVt_PV) {
1612 sv_upgrade(dstr, SVt_IV);
1613 else if (dtype == SVt_NV)
1614 sv_upgrade(dstr, SVt_PVNV);
1615 else if (dtype <= SVt_PV)
1616 sv_upgrade(dstr, SVt_PVIV);
1620 if (dtype <= SVt_PVIV) {
1622 sv_upgrade(dstr, SVt_NV);
1623 else if (dtype == SVt_PVIV)
1624 sv_upgrade(dstr, SVt_PVNV);
1625 else if (dtype <= SVt_PV)
1626 sv_upgrade(dstr, SVt_PVNV);
1631 sv_upgrade(dstr, SVt_RV);
1632 else if (dtype == SVt_PVGV &&
1633 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1636 if (curcop->cop_stash != GvSTASH(dstr))
1637 GvIMPORTED_on(dstr);
1646 sv_upgrade(dstr, SVt_PV);
1649 if (dtype < SVt_PVIV)
1650 sv_upgrade(dstr, SVt_PVIV);
1653 if (dtype < SVt_PVNV)
1654 sv_upgrade(dstr, SVt_PVNV);
1658 sv_upgrade(dstr, SVt_PVLV);
1666 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1667 op_name[op->op_type]);
1669 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1673 if (dtype <= SVt_PVGV) {
1675 if (dtype != SVt_PVGV) {
1676 char *name = GvNAME(sstr);
1677 STRLEN len = GvNAMELEN(sstr);
1678 sv_upgrade(dstr, SVt_PVGV);
1679 sv_magic(dstr, dstr, '*', name, len);
1680 GvSTASH(dstr) = GvSTASH(sstr);
1681 GvNAME(dstr) = savepvn(name, len);
1682 GvNAMELEN(dstr) = len;
1683 SvFAKE_on(dstr); /* can coerce to non-glob */
1685 (void)SvOK_off(dstr);
1686 GvINTRO_off(dstr); /* one-shot flag */
1688 GvGP(dstr) = gp_ref(GvGP(sstr));
1690 if (curcop->cop_stash != GvSTASH(dstr))
1691 GvIMPORTED_on(dstr);
1699 sv_upgrade(dstr, stype);
1700 if (SvGMAGICAL(sstr))
1704 sflags = SvFLAGS(sstr);
1706 if (sflags & SVf_ROK) {
1707 if (dtype >= SVt_PV) {
1708 if (dtype == SVt_PVGV) {
1709 SV *sref = SvREFCNT_inc(SvRV(sstr));
1711 int intro = GvINTRO(dstr);
1715 GvGP(dstr)->gp_refcnt--;
1716 GvINTRO_off(dstr); /* one-shot flag */
1717 Newz(602,gp, 1, GP);
1720 GvSV(dstr) = NEWSV(72,0);
1721 GvLINE(dstr) = curcop->cop_line;
1722 GvEGV(dstr) = (GV*)dstr;
1725 switch (SvTYPE(sref)) {
1728 SAVESPTR(GvAV(dstr));
1730 dref = (SV*)GvAV(dstr);
1731 GvAV(dstr) = (AV*)sref;
1732 if (curcop->cop_stash != GvSTASH(dstr))
1733 GvIMPORTED_AV_on(dstr);
1737 SAVESPTR(GvHV(dstr));
1739 dref = (SV*)GvHV(dstr);
1740 GvHV(dstr) = (HV*)sref;
1741 if (curcop->cop_stash != GvSTASH(dstr))
1742 GvIMPORTED_HV_on(dstr);
1746 SAVESPTR(GvCV(dstr));
1748 CV* cv = GvCV(dstr);
1751 if (dowarn && sref != dref &&
1752 !GvCVGEN((GV*)dstr) &&
1753 (CvROOT(cv) || CvXSUB(cv)) )
1754 warn("Subroutine %s redefined",
1755 GvENAME((GV*)dstr));
1759 if (GvCV(dstr) != (CV*)sref) {
1760 GvCV(dstr) = (CV*)sref;
1761 GvASSUMECV_on(dstr);
1763 if (curcop->cop_stash != GvSTASH(dstr))
1764 GvIMPORTED_CV_on(dstr);
1768 SAVESPTR(GvIOp(dstr));
1770 dref = (SV*)GvIOp(dstr);
1771 GvIOp(dstr) = (IO*)sref;
1775 SAVESPTR(GvSV(dstr));
1777 dref = (SV*)GvSV(dstr);
1779 if (curcop->cop_stash != GvSTASH(dstr))
1780 GvIMPORTED_SV_on(dstr);
1791 (void)SvOOK_off(dstr); /* backoff */
1792 Safefree(SvPVX(dstr));
1793 SvLEN(dstr)=SvCUR(dstr)=0;
1796 (void)SvOK_off(dstr);
1797 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1799 if (sflags & SVp_NOK) {
1801 SvNVX(dstr) = SvNVX(sstr);
1803 if (sflags & SVp_IOK) {
1804 (void)SvIOK_on(dstr);
1805 SvIVX(dstr) = SvIVX(sstr);
1808 if (SvAMAGIC(sstr)) {
1811 #endif /* OVERLOAD */
1813 else if (sflags & SVp_POK) {
1816 * Check to see if we can just swipe the string. If so, it's a
1817 * possible small lose on short strings, but a big win on long ones.
1818 * It might even be a win on short strings if SvPVX(dstr)
1819 * has to be allocated and SvPVX(sstr) has to be freed.
1822 if (SvTEMP(sstr) && /* slated for free anyway? */
1823 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
1825 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
1827 SvFLAGS(dstr) &= ~SVf_OOK;
1828 Safefree(SvPVX(dstr) - SvIVX(dstr));
1831 Safefree(SvPVX(dstr));
1833 (void)SvPOK_only(dstr);
1834 SvPV_set(dstr, SvPVX(sstr));
1835 SvLEN_set(dstr, SvLEN(sstr));
1836 SvCUR_set(dstr, SvCUR(sstr));
1838 (void)SvOK_off(sstr);
1839 SvPV_set(sstr, Nullch);
1844 else { /* have to copy actual string */
1845 STRLEN len = SvCUR(sstr);
1847 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1848 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1849 SvCUR_set(dstr, len);
1850 *SvEND(dstr) = '\0';
1851 (void)SvPOK_only(dstr);
1854 if (sflags & SVp_NOK) {
1856 SvNVX(dstr) = SvNVX(sstr);
1858 if (sflags & SVp_IOK) {
1859 (void)SvIOK_on(dstr);
1860 SvIVX(dstr) = SvIVX(sstr);
1863 else if (sflags & SVp_NOK) {
1864 SvNVX(dstr) = SvNVX(sstr);
1865 (void)SvNOK_only(dstr);
1867 (void)SvIOK_on(dstr);
1868 SvIVX(dstr) = SvIVX(sstr);
1871 else if (sflags & SVp_IOK) {
1872 (void)SvIOK_only(dstr);
1873 SvIVX(dstr) = SvIVX(sstr);
1876 (void)SvOK_off(dstr);
1882 sv_setpvn(sv,ptr,len)
1885 register STRLEN len;
1887 assert(len >= 0); /* STRLEN is probably unsigned, so this may
1888 elicit a warning, but it won't hurt. */
1889 if (SvTHINKFIRST(sv)) {
1890 if (SvREADONLY(sv) && curcop != &compiling)
1899 if (SvTYPE(sv) >= SVt_PV) {
1900 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1903 else if (!sv_upgrade(sv, SVt_PV))
1905 SvGROW(sv, len + 1);
1906 Move(ptr,SvPVX(sv),len,char);
1909 (void)SvPOK_only(sv); /* validate pointer */
1918 register STRLEN len;
1920 if (SvTHINKFIRST(sv)) {
1921 if (SvREADONLY(sv) && curcop != &compiling)
1931 if (SvTYPE(sv) >= SVt_PV) {
1932 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1935 else if (!sv_upgrade(sv, SVt_PV))
1937 SvGROW(sv, len + 1);
1938 Move(ptr,SvPVX(sv),len+1,char);
1940 (void)SvPOK_only(sv); /* validate pointer */
1945 sv_usepvn(sv,ptr,len)
1948 register STRLEN len;
1950 if (SvTHINKFIRST(sv)) {
1951 if (SvREADONLY(sv) && curcop != &compiling)
1956 if (!SvUPGRADE(sv, SVt_PV))
1963 Safefree(SvPVX(sv));
1964 Renew(ptr, len+1, char);
1967 SvLEN_set(sv, len+1);
1969 (void)SvPOK_only(sv); /* validate pointer */
1974 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1978 register STRLEN delta;
1980 if (!ptr || !SvPOKp(sv))
1982 if (SvTHINKFIRST(sv)) {
1983 if (SvREADONLY(sv) && curcop != &compiling)
1988 if (SvTYPE(sv) < SVt_PVIV)
1989 sv_upgrade(sv,SVt_PVIV);
1993 SvFLAGS(sv) |= SVf_OOK;
1995 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1996 delta = ptr - SvPVX(sv);
2004 sv_catpvn(sv,ptr,len)
2007 register STRLEN len;
2012 junk = SvPV_force(sv, tlen);
2013 SvGROW(sv, tlen + len + 1);
2016 Move(ptr,SvPVX(sv)+tlen,len,char);
2019 (void)SvPOK_only(sv); /* validate pointer */
2032 if (s = SvPV(sstr, len))
2033 sv_catpvn(dstr,s,len);
2041 register STRLEN len;
2047 junk = SvPV_force(sv, tlen);
2049 SvGROW(sv, tlen + len + 1);
2052 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2054 (void)SvPOK_only(sv); /* validate pointer */
2074 sv_upgrade(sv, SVt_PV);
2075 SvGROW(sv, len + 1);
2080 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2083 sv_magic(sv, obj, how, name, namlen)
2092 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", how))
2094 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2095 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2102 if (!SvUPGRADE(sv, SVt_PVMG))
2105 Newz(702,mg, 1, MAGIC);
2106 mg->mg_moremagic = SvMAGIC(sv);
2109 if (!obj || obj == sv || how == '#')
2112 mg->mg_obj = SvREFCNT_inc(obj);
2113 mg->mg_flags |= MGf_REFCOUNTED;
2116 mg->mg_len = namlen;
2119 mg->mg_ptr = savepvn(name, namlen);
2120 else if (namlen == HEf_SVKEY)
2121 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2125 mg->mg_virtual = &vtbl_sv;
2129 mg->mg_virtual = &vtbl_amagic;
2132 mg->mg_virtual = &vtbl_amagicelem;
2137 #endif /* OVERLOAD */
2139 mg->mg_virtual = &vtbl_bm;
2142 mg->mg_virtual = &vtbl_env;
2145 mg->mg_virtual = &vtbl_envelem;
2148 mg->mg_virtual = &vtbl_mglob;
2151 mg->mg_virtual = &vtbl_isa;
2154 mg->mg_virtual = &vtbl_isaelem;
2161 mg->mg_virtual = &vtbl_dbline;
2164 mg->mg_virtual = &vtbl_pack;
2168 mg->mg_virtual = &vtbl_packelem;
2171 mg->mg_virtual = &vtbl_sig;
2174 mg->mg_virtual = &vtbl_sigelem;
2177 mg->mg_virtual = &vtbl_taint;
2181 mg->mg_virtual = &vtbl_uvar;
2184 mg->mg_virtual = &vtbl_vec;
2187 mg->mg_virtual = &vtbl_substr;
2190 mg->mg_virtual = &vtbl_glob;
2193 mg->mg_virtual = &vtbl_arylen;
2196 mg->mg_virtual = &vtbl_pos;
2198 case '~': /* Reserved for use by extensions not perl internals. */
2199 /* Useful for attaching extension internal data to perl vars. */
2200 /* Note that multiple extensions may clash if magical scalars */
2201 /* etc holding private data from one are passed to another. */
2205 croak("Don't know how to handle magic of type '%c'", how);
2209 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2213 sv_unmagic(sv, type)
2219 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2222 for (mg = *mgp; mg; mg = *mgp) {
2223 if (mg->mg_type == type) {
2224 MGVTBL* vtbl = mg->mg_virtual;
2225 *mgp = mg->mg_moremagic;
2226 if (vtbl && vtbl->svt_free)
2227 (*vtbl->svt_free)(sv, mg);
2228 if (mg->mg_ptr && mg->mg_type != 'g')
2229 if (mg->mg_len >= 0)
2230 Safefree(mg->mg_ptr);
2231 else if (mg->mg_len == HEf_SVKEY)
2232 SvREFCNT_dec((SV*)mg->mg_ptr);
2233 if (mg->mg_flags & MGf_REFCOUNTED)
2234 SvREFCNT_dec(mg->mg_obj);
2238 mgp = &mg->mg_moremagic;
2242 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2249 sv_insert(bigstr,offset,len,little,littlelen)
2258 register char *midend;
2259 register char *bigend;
2263 croak("Can't modify non-existent substring");
2264 SvPV_force(bigstr, na);
2266 i = littlelen - len;
2267 if (i > 0) { /* string might grow */
2268 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2269 mid = big + offset + len;
2270 midend = bigend = big + SvCUR(bigstr);
2273 while (midend > mid) /* shove everything down */
2274 *--bigend = *--midend;
2275 Move(little,big+offset,littlelen,char);
2281 Move(little,SvPVX(bigstr)+offset,len,char);
2286 big = SvPVX(bigstr);
2289 bigend = big + SvCUR(bigstr);
2291 if (midend > bigend)
2292 croak("panic: sv_insert");
2294 if (mid - big > bigend - midend) { /* faster to shorten from end */
2296 Move(little, mid, littlelen,char);
2299 i = bigend - midend;
2301 Move(midend, mid, i,char);
2305 SvCUR_set(bigstr, mid - big);
2308 else if (i = mid - big) { /* faster from front */
2309 midend -= littlelen;
2311 sv_chop(bigstr,midend-i);
2316 Move(little, mid, littlelen,char);
2318 else if (littlelen) {
2319 midend -= littlelen;
2320 sv_chop(bigstr,midend);
2321 Move(little,midend,littlelen,char);
2324 sv_chop(bigstr,midend);
2329 /* make sv point to what nstr did */
2336 U32 refcnt = SvREFCNT(sv);
2337 if (SvTHINKFIRST(sv)) {
2338 if (SvREADONLY(sv) && curcop != &compiling)
2343 if (SvREFCNT(nsv) != 1)
2344 warn("Reference miscount in sv_replace()");
2345 if (SvMAGICAL(sv)) {
2349 sv_upgrade(nsv, SVt_PVMG);
2350 SvMAGIC(nsv) = SvMAGIC(sv);
2351 SvFLAGS(nsv) |= SvMAGICAL(sv);
2357 StructCopy(nsv,sv,SV);
2358 SvREFCNT(sv) = refcnt;
2359 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2368 assert(SvREFCNT(sv) == 0);
2374 if (defstash) { /* Still have a symbol table? */
2375 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2378 SAVEFREESV(SvSTASH(sv));
2379 if (destructor && GvCV(destructor)) {
2383 sv_upgrade(&ref, SVt_RV);
2384 SvRV(&ref) = SvREFCNT_inc(sv);
2391 perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
2392 del_XRV(SvANY(&ref));
2398 SvREFCNT_dec(SvSTASH(sv));
2400 SvOBJECT_off(sv); /* Curse the object. */
2401 if (SvTYPE(sv) != SVt_PVIO)
2402 --sv_objcount; /* XXX Might want something more general */
2407 && (ret = perl_get_sv("DB::ret", FALSE))
2408 && SvROK(ret) && SvRV(ret) == sv && SvREFCNT(sv) == 1) {
2409 /* Debugger is prone to dangling references. */
2414 croak("panic: dangling references in DESTROY");
2418 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2420 switch (SvTYPE(sv)) {
2423 Safefree(IoTOP_NAME(sv));
2424 Safefree(IoFMT_NAME(sv));
2425 Safefree(IoBOTTOM_NAME(sv));
2441 Safefree(GvNAME(sv));
2448 (void)SvOOK_off(sv);
2453 SvREFCNT_dec(SvRV(sv));
2454 else if (SvPVX(sv) && SvLEN(sv))
2455 Safefree(SvPVX(sv));
2465 switch (SvTYPE(sv)) {
2481 del_XPVIV(SvANY(sv));
2484 del_XPVNV(SvANY(sv));
2487 del_XPVMG(SvANY(sv));
2490 del_XPVLV(SvANY(sv));
2493 del_XPVAV(SvANY(sv));
2496 del_XPVHV(SvANY(sv));
2499 del_XPVCV(SvANY(sv));
2502 del_XPVGV(SvANY(sv));
2505 del_XPVBM(SvANY(sv));
2508 del_XPVFM(SvANY(sv));
2511 del_XPVIO(SvANY(sv));
2514 SvFLAGS(sv) &= SVf_BREAK;
2515 SvFLAGS(sv) |= SVTYPEMASK;
2533 if (SvREADONLY(sv)) {
2534 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2537 if (SvREFCNT(sv) == 0) {
2538 if (SvFLAGS(sv) & SVf_BREAK)
2540 if (in_clean_all) /* All is fair */
2542 warn("Attempt to free unreferenced scalar");
2545 if (--SvREFCNT(sv) > 0)
2549 warn("Attempt to free temp prematurely");
2570 junk = SvPV(sv, len);
2589 pv1 = SvPV(str1, cur1);
2594 pv2 = SvPV(str2, cur2);
2599 return !memcmp(pv1, pv2, cur1);
2618 pv1 = SvPV(str1, cur1);
2625 pv2 = SvPV(str2, cur2);
2628 return cur2 ? -1 : 0;
2634 if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
2635 return retval < 0 ? -1 : 1;
2640 else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
2641 return retval < 0 ? -1 : 1;
2642 else if (cur1 == cur2)
2649 sv_gets(sv,fp,append)
2651 register PerlIO *fp;
2656 register STDCHAR rslast;
2657 register STDCHAR *bp;
2661 if (SvTHINKFIRST(sv)) {
2662 if (SvREADONLY(sv) && curcop != &compiling)
2667 if (!SvUPGRADE(sv, SVt_PV))
2674 else if (RsPARA(rs)) {
2679 rsptr = SvPV(rs, rslen);
2680 rslast = rslen ? rsptr[rslen - 1] : '\0';
2682 if (RsPARA(rs)) { /* have to do this both before and after */
2683 do { /* to make sure file boundaries work right */
2686 i = PerlIO_getc(fp);
2690 PerlIO_ungetc(fp,i);
2696 /* See if we know enough about I/O mechanism to cheat it ! */
2698 /* This used to be #ifdef test - it is made run-time test for ease
2699 of abstracting out stdio interface. One call should be cheap
2700 enough here - and may even be a macro allowing compile
2704 if (PerlIO_fast_gets(fp)) {
2707 * We're going to steal some values from the stdio struct
2708 * and put EVERYTHING in the innermost loop into registers.
2710 register STDCHAR *ptr;
2715 /* Here is some breathtakingly efficient cheating */
2717 cnt = PerlIO_get_cnt(fp); /* get count into register */
2718 (void)SvPOK_only(sv); /* validate pointer */
2719 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2720 if (cnt > 80 && SvLEN(sv) > append) {
2721 shortbuffered = cnt - SvLEN(sv) + append + 1;
2722 cnt -= shortbuffered;
2726 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2731 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
2732 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
2737 while (cnt > 0) { /* this | eat */
2739 if ((*bp++ = *ptr++) == rslast) /* really | dust */
2740 goto thats_all_folks; /* screams | sed :-) */
2744 memcpy((char*)bp, (char*)ptr, cnt); /* this | eat */
2745 bp += cnt; /* screams | dust */
2746 ptr += cnt; /* louder | sed :-) */
2751 if (shortbuffered) { /* oh well, must extend */
2752 cnt = shortbuffered;
2754 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2756 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2757 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2761 PerlIO_set_ptrcnt(fp,(char *) ptr, cnt); /* deregisterize cnt and ptr */
2762 /* This used to call 'filbuf' in stdio form, but as that behaves like getc
2763 when cnt <= 0 we use PerlIO_getc here to avoid another abstraction.
2764 This may also avoid issues with different named 'filbuf' equivalents
2766 i = PerlIO_getc(fp); /* get more characters */
2767 cnt = PerlIO_get_cnt(fp);
2768 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
2770 if (i == EOF) /* all done for ever? */
2771 goto thats_really_all_folks;
2773 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2775 SvGROW(sv, bpx + cnt + 2);
2776 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2778 *bp++ = i; /* store character from PerlIO_getc */
2780 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
2781 goto thats_all_folks;
2785 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
2786 memcmp((char*)bp - rslen, rsptr, rslen))
2787 goto screamer; /* go back to the fray */
2788 thats_really_all_folks:
2790 cnt += shortbuffered;
2791 PerlIO_set_ptrcnt(fp,(char *) ptr, cnt); /* put these back or we're in trouble */
2793 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
2797 /*The big, slow, and stupid way */
2802 register STDCHAR *bpe = buf + sizeof(buf);
2804 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
2805 ; /* keep reading */
2809 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
2810 i = cnt ? (U8)buf[cnt - 1] : EOF;
2814 sv_catpvn(sv, (char *) buf, cnt);
2816 sv_setpvn(sv, (char *) buf, cnt);
2818 if (i != EOF && /* joy */
2820 SvCUR(sv) < rslen ||
2821 memcmp(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
2828 if (RsPARA(rs)) { /* have to do this both before and after */
2829 while (i != EOF) { /* to make sure file boundaries work right */
2830 i = PerlIO_getc(fp);
2832 PerlIO_ungetc(fp,i);
2838 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
2851 if (SvTHINKFIRST(sv)) {
2852 if (SvREADONLY(sv) && curcop != &compiling)
2856 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
2857 #endif /* OVERLOAD */
2863 flags = SvFLAGS(sv);
2864 if (flags & SVp_IOK) {
2865 (void)SvIOK_only(sv);
2869 if (flags & SVp_NOK) {
2871 (void)SvNOK_only(sv);
2874 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2875 if ((flags & SVTYPEMASK) < SVt_PVNV)
2876 sv_upgrade(sv, SVt_NV);
2878 (void)SvNOK_only(sv);
2882 while (isALPHA(*d)) d++;
2883 while (isDIGIT(*d)) d++;
2885 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2889 while (d >= SvPVX(sv)) {
2899 *(d--) -= 'z' - 'a' + 1;
2902 /* oh,oh, the number grew */
2903 SvGROW(sv, SvCUR(sv) + 2);
2905 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2921 if (SvTHINKFIRST(sv)) {
2922 if (SvREADONLY(sv) && curcop != &compiling)
2926 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
2927 #endif /* OVERLOAD */
2933 flags = SvFLAGS(sv);
2934 if (flags & SVp_IOK) {
2935 (void)SvIOK_only(sv);
2939 if (flags & SVp_NOK) {
2941 (void)SvNOK_only(sv);
2944 if (!(flags & SVp_POK)) {
2945 if ((flags & SVTYPEMASK) < SVt_PVNV)
2946 sv_upgrade(sv, SVt_NV);
2948 (void)SvNOK_only(sv);
2951 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2954 /* Make a string that will exist for the duration of the expression
2955 * evaluation. Actually, it may have to last longer than that, but
2956 * hopefully we won't free it until it has been assigned to a
2957 * permanent location. */
2963 Renew(tmps_stack, tmps_max, SV*);
2967 sv_mortalcopy(oldstr)
2976 sv_setsv(sv,oldstr);
2977 if (++tmps_ix >= tmps_max)
2979 tmps_stack[tmps_ix] = sv;
2992 SvFLAGS(sv) = SVs_TEMP;
2993 if (++tmps_ix >= tmps_max)
2995 tmps_stack[tmps_ix] = sv;
2999 /* same thing without the copying */
3007 if (SvREADONLY(sv) && curcop != &compiling)
3009 if (++tmps_ix >= tmps_max)
3011 tmps_stack[tmps_ix] = sv;
3029 sv_setpvn(sv,s,len);
3071 sv_upgrade(sv, SVt_RV);
3073 SvRV(sv) = SvREFCNT_inc(ref);
3078 /* make an exact duplicate of old */
3088 if (SvTYPE(old) == SVTYPEMASK) {
3089 warn("semi-panic: attempt to dup freed string");
3119 if (!*s) { /* reset ?? searches */
3120 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3121 pm->op_pmflags &= ~PMf_USED;
3126 /* reset variables */
3128 if (!HvARRAY(stash))
3131 Zero(todo, 256, char);
3138 for ( ; i <= max; i++) {
3141 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3142 for (entry = HvARRAY(stash)[i];
3144 entry = HeNEXT(entry)) {
3145 if (!todo[(U8)*HeKEY(entry)])
3147 gv = (GV*)HeVAL(entry);
3150 if (SvTYPE(sv) >= SVt_PV) {
3153 if (SvPVX(sv) != Nullch)
3160 if (HvNAME(GvHV(gv)))
3163 #ifndef VMS /* VMS has no environ array */
3165 environ[0] = Nullch;
3174 sv_2cv(sv, st, gvp, lref)
3184 return *gvp = Nullgv, Nullcv;
3185 switch (SvTYPE(sv)) {
3205 if (SvTYPE(cv) != SVt_PVCV)
3206 croak("Not a subroutine reference");
3214 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3220 if (lref && !GvCV(gv)) {
3223 tmpsv = NEWSV(704,0);
3224 gv_efullname(tmpsv, gv, Nullch);
3225 newSUB(start_subparse(),
3226 newSVOP(OP_CONST, 0, tmpsv),
3231 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3248 if ((Xpv = (XPV*)SvANY(sv)) &&
3249 (*Xpv->xpv_pv > '0' ||
3251 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3258 return SvIVX(sv) != 0;
3261 return SvNVX(sv) != 0.0;
3263 return sv_2bool(sv);
3287 return (double)SvIVX(Sv);
3302 return sv_2pv(sv, lp);
3307 sv_pvn_force(sv, lp)
3313 if (SvREADONLY(sv) && curcop != &compiling)
3320 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3321 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3327 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3328 op_name[op->op_type]);
3332 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3337 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3338 SvGROW(sv, len + 1);
3339 Move(s,SvPVX(sv),len,char);
3344 SvPOK_on(sv); /* validate pointer */
3346 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3347 (unsigned long)sv,SvPVX(sv)));
3358 if (ob && SvOBJECT(sv))
3359 return HvNAME(SvSTASH(sv));
3361 switch (SvTYPE(sv)) {
3375 case SVt_PVLV: return "LVALUE";
3376 case SVt_PVAV: return "ARRAY";
3377 case SVt_PVHV: return "HASH";
3378 case SVt_PVCV: return "CODE";
3379 case SVt_PVGV: return "GLOB";
3380 case SVt_PVFM: return "FORMLINE";
3381 default: return "UNKNOWN";
3409 return strEQ(HvNAME(SvSTASH(sv)), name);
3413 newSVrv(rv, classname)
3423 sv_upgrade(rv, SVt_RV);
3424 SvRV(rv) = SvREFCNT_inc(sv);
3428 HV* stash = gv_stashpv(classname, TRUE);
3429 (void)sv_bless(rv, stash);
3435 sv_setref_pv(rv, classname, pv)
3441 sv_setsv(rv, &sv_undef);
3443 sv_setiv(newSVrv(rv,classname), (IV)pv);
3448 sv_setref_iv(rv, classname, iv)
3453 sv_setiv(newSVrv(rv,classname), iv);
3458 sv_setref_nv(rv, classname, nv)
3463 sv_setnv(newSVrv(rv,classname), nv);
3468 sv_setref_pvn(rv, classname, pv, n)
3474 sv_setpvn(newSVrv(rv,classname), pv, n);
3485 croak("Can't bless non-reference value");
3487 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3488 if (SvREADONLY(ref))
3490 if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
3495 (void)SvUPGRADE(ref, SVt_PVMG);
3496 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3500 if (Gv_AMG(stash)) {
3503 #endif /* OVERLOAD */
3512 assert(SvTYPE(sv) == SVt_PVGV);
3516 sv_unmagic(sv, '*');
3517 Safefree(GvNAME(sv));
3519 SvFLAGS(sv) &= ~SVTYPEMASK;
3520 SvFLAGS(sv) |= SVt_PVMG;
3531 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3534 sv_2mortal(rv); /* Schedule for freeing later */
3548 PerlIO_printf(Perl_debug_log, "SV = 0\n");
3552 flags = SvFLAGS(sv);
3555 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
3556 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
3558 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
3559 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
3560 if (flags & SVs_PADMY) strcat(d, "PADMY,");
3561 if (flags & SVs_TEMP) strcat(d, "TEMP,");
3562 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
3563 if (flags & SVs_GMG) strcat(d, "GMG,");
3564 if (flags & SVs_SMG) strcat(d, "SMG,");
3565 if (flags & SVs_RMG) strcat(d, "RMG,");
3568 if (flags & SVf_IOK) strcat(d, "IOK,");
3569 if (flags & SVf_NOK) strcat(d, "NOK,");
3570 if (flags & SVf_POK) strcat(d, "POK,");
3571 if (flags & SVf_ROK) strcat(d, "ROK,");
3572 if (flags & SVf_OOK) strcat(d, "OOK,");
3573 if (flags & SVf_FAKE) strcat(d, "FAKE,");
3574 if (flags & SVf_READONLY) strcat(d, "READONLY,");
3578 if (flags & SVf_AMAGIC) strcat(d, "OVERLOAD,");
3579 #endif /* OVERLOAD */
3580 if (flags & SVp_IOK) strcat(d, "pIOK,");
3581 if (flags & SVp_NOK) strcat(d, "pNOK,");
3582 if (flags & SVp_POK) strcat(d, "pPOK,");
3583 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
3587 if (CvANON(sv)) strcat(d, "ANON,");
3588 if (CvCLONE(sv)) strcat(d, "CLONE,");
3589 if (CvCLONED(sv)) strcat(d, "CLONED,");
3592 if (GvMULTI(sv)) strcat(d, "MULTI,");
3594 if (flags & SVpgv_AM) strcat(d, "withOVERLOAD,");
3595 #endif /* OVERLOAD */
3604 PerlIO_printf(Perl_debug_log, "SV = ");
3607 PerlIO_printf(Perl_debug_log, "NULL%s\n", tmpbuf);
3610 PerlIO_printf(Perl_debug_log, "IV%s\n", tmpbuf);
3613 PerlIO_printf(Perl_debug_log, "NV%s\n", tmpbuf);
3616 PerlIO_printf(Perl_debug_log, "RV%s\n", tmpbuf);
3619 PerlIO_printf(Perl_debug_log, "PV%s\n", tmpbuf);
3622 PerlIO_printf(Perl_debug_log, "PVIV%s\n", tmpbuf);
3625 PerlIO_printf(Perl_debug_log, "PVNV%s\n", tmpbuf);
3628 PerlIO_printf(Perl_debug_log, "PVBM%s\n", tmpbuf);
3631 PerlIO_printf(Perl_debug_log, "PVMG%s\n", tmpbuf);
3634 PerlIO_printf(Perl_debug_log, "PVLV%s\n", tmpbuf);
3637 PerlIO_printf(Perl_debug_log, "PVAV%s\n", tmpbuf);
3640 PerlIO_printf(Perl_debug_log, "PVHV%s\n", tmpbuf);
3643 PerlIO_printf(Perl_debug_log, "PVCV%s\n", tmpbuf);
3646 PerlIO_printf(Perl_debug_log, "PVGV%s\n", tmpbuf);
3649 PerlIO_printf(Perl_debug_log, "PVFM%s\n", tmpbuf);
3652 PerlIO_printf(Perl_debug_log, "PVIO%s\n", tmpbuf);
3655 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", tmpbuf);
3658 if (type >= SVt_PVIV || type == SVt_IV)
3659 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
3660 if (type >= SVt_PVNV || type == SVt_NV)
3661 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
3663 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
3669 if (type <= SVt_PVLV) {
3671 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
3672 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
3674 PerlIO_printf(Perl_debug_log, " PV = 0\n");
3676 if (type >= SVt_PVMG) {
3678 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
3681 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
3685 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
3686 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
3687 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
3688 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
3689 sv_dump(LvTARG(sv));
3692 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
3693 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
3694 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILL(sv));
3695 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
3696 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
3697 flags = AvFLAGS(sv);
3700 if (flags & AVf_REAL) strcat(d, "REAL,");
3701 if (flags & AVf_REIFY) strcat(d, "REIFY,");
3702 if (flags & AVf_REUSED) strcat(d, "REUSED,");
3704 d[strlen(d)-1] = '\0';
3705 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n", d);
3708 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
3709 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
3710 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
3711 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
3712 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
3713 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
3715 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
3717 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
3722 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
3723 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
3724 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
3725 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
3726 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
3727 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
3728 PerlIO_printf(PerlIO_stderr(), " GV = 0x%lx", (long)CvGV(sv));
3729 if (CvGV(sv) && GvNAME(CvGV(sv))) {
3730 PerlIO_printf(PerlIO_stderr(), " \"%s\"\n", GvNAME(CvGV(sv)));
3732 PerlIO_printf(PerlIO_stderr(), "\n");
3734 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
3735 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
3736 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
3737 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
3738 if (type == SVt_PVFM)
3739 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
3742 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
3743 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
3744 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
3745 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
3746 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
3747 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
3748 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
3749 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
3750 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
3751 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
3752 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
3753 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
3754 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
3755 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
3756 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
3757 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
3758 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
3761 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
3762 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
3763 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
3764 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
3765 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
3766 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
3767 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
3768 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
3769 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
3770 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
3771 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
3772 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
3773 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
3774 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
3775 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
3776 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
3795 switch (SvTYPE(sv)) {
3803 croak("Bad filehandle: %s", GvNAME(gv));
3807 croak(no_usym, "filehandle");
3809 return sv_2io(SvRV(sv));
3810 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3816 croak("Bad filehandle: %s", SvPV(sv,na));