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 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
294 PerlIO_printf(PerlIO_stderr(), "****\n");
302 visit(do_report_used);
311 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
312 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
318 /* XXX Might want to check arrays, etc. */
321 #ifndef DISABLE_DESTRUCTOR_KLUDGE
323 do_clean_named_objs(sv)
326 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
327 do_clean_objs(GvSV(sv));
334 #ifndef DISABLE_DESTRUCTOR_KLUDGE
335 visit(do_clean_named_objs);
337 visit(do_clean_objs);
344 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
345 SvFLAGS(sv) |= SVf_BREAK;
349 static int in_clean_all = 0;
365 /* Free arenas here, but be careful about fake ones. (We assume
366 contiguity of the fake ones with the corresponding real ones.) */
368 for (sva = sv_arenaroot; sva; sva = svanext) {
369 svanext = (SV*) SvANY(sva);
370 while (svanext && SvFAKE(svanext))
371 svanext = (SV*) SvANY(svanext);
374 Safefree((void *)sva);
385 * See comment in more_xiv() -- RAM.
387 xiv_root = (IV**)*xiv;
388 return (XPVIV*)((char*)xiv - sizeof(XPV));
397 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
398 *xiv = (IV *)xiv_root;
406 register IV** xivend;
407 XPV* ptr = (XPV*)safemalloc(1008);
408 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
409 xiv_arenaroot = ptr; /* to keep Purify happy */
412 xivend = &xiv[1008 / sizeof(IV *) - 1];
413 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
415 while (xiv < xivend) {
416 *xiv = (IV *)(xiv + 1);
429 xnv_root = *(double**)xnv;
430 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
439 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
440 *(double**)xnv = xnv_root;
447 register double* xnv;
448 register double* xnvend;
449 xnv = (double*)safemalloc(1008);
450 xnvend = &xnv[1008 / sizeof(double) - 1];
451 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
453 while (xnv < xnvend) {
454 *(double**)xnv = (double*)(xnv + 1);
467 xrv_root = (XRV*)xrv->xrv_rv;
477 p->xrv_rv = (SV*)xrv_root;
485 register XRV* xrvend;
486 xrv_root = (XRV*)safemalloc(1008);
488 xrvend = &xrv[1008 / sizeof(XRV) - 1];
489 while (xrv < xrvend) {
490 xrv->xrv_rv = (SV*)(xrv + 1);
503 xpv_root = (XPV*)xpv->xpv_pv;
513 p->xpv_pv = (char*)xpv_root;
521 register XPV* xpvend;
522 xpv_root = (XPV*)safemalloc(1008);
524 xpvend = &xpv[1008 / sizeof(XPV) - 1];
525 while (xpv < xpvend) {
526 xpv->xpv_pv = (char*)(xpv + 1);
534 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
535 #define del_XIV(p) free((char*)p)
537 #define new_XIV() (void*)new_xiv()
538 #define del_XIV(p) del_xiv(p)
542 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
543 #define del_XNV(p) free((char*)p)
545 #define new_XNV() (void*)new_xnv()
546 #define del_XNV(p) del_xnv(p)
550 #define new_XRV() (void*)safemalloc(sizeof(XRV))
551 #define del_XRV(p) free((char*)p)
553 #define new_XRV() (void*)new_xrv()
554 #define del_XRV(p) del_xrv(p)
558 #define new_XPV() (void*)safemalloc(sizeof(XPV))
559 #define del_XPV(p) free((char*)p)
561 #define new_XPV() (void*)new_xpv()
562 #define del_XPV(p) del_xpv(p)
565 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
566 #define del_XPVIV(p) free((char*)p)
568 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
569 #define del_XPVNV(p) free((char*)p)
571 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
572 #define del_XPVMG(p) free((char*)p)
574 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
575 #define del_XPVLV(p) free((char*)p)
577 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
578 #define del_XPVAV(p) free((char*)p)
580 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
581 #define del_XPVHV(p) free((char*)p)
583 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
584 #define del_XPVCV(p) free((char*)p)
586 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
587 #define del_XPVGV(p) free((char*)p)
589 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
590 #define del_XPVBM(p) free((char*)p)
592 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
593 #define del_XPVFM(p) free((char*)p)
595 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
596 #define del_XPVIO(p) free((char*)p)
611 if (SvTYPE(sv) == mt)
617 switch (SvTYPE(sv)) {
632 nv = (double)SvIVX(sv);
638 else if (mt < SVt_PVIV)
655 pv = (char*)SvRV(sv);
659 nv = (double)(unsigned long)pv;
675 else if (mt == SVt_NV)
686 del_XPVIV(SvANY(sv));
696 del_XPVNV(SvANY(sv));
706 del_XPVMG(SvANY(sv));
709 croak("Can't upgrade that kind of scalar");
714 croak("Can't upgrade to undef");
716 SvANY(sv) = new_XIV();
720 SvANY(sv) = new_XNV();
724 SvANY(sv) = new_XRV();
728 SvANY(sv) = new_XPV();
734 SvANY(sv) = new_XPVIV();
744 SvANY(sv) = new_XPVNV();
752 SvANY(sv) = new_XPVMG();
762 SvANY(sv) = new_XPVLV();
776 SvANY(sv) = new_XPVAV();
791 SvANY(sv) = new_XPVHV();
807 SvANY(sv) = new_XPVCV();
808 Zero(SvANY(sv), 1, XPVCV);
818 SvANY(sv) = new_XPVGV();
833 SvANY(sv) = new_XPVBM();
846 SvANY(sv) = new_XPVFM();
847 Zero(SvANY(sv), 1, XPVFM);
857 SvANY(sv) = new_XPVIO();
858 Zero(SvANY(sv), 1, XPVIO);
869 SvFLAGS(sv) &= ~SVTYPEMASK;
887 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
891 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
892 if (sv == &sv_undef) {
893 strcpy(t, "SV_UNDEF");
894 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
895 SVs_GMG|SVs_SMG|SVs_RMG)) &&
899 else if (sv == &sv_no) {
901 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
902 SVs_GMG|SVs_SMG|SVs_RMG)) &&
903 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
911 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
912 SVs_GMG|SVs_SMG|SVs_RMG)) &&
913 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
916 SvPVX(sv) && *SvPVX(sv) == '1' &&
923 else if (SvREFCNT(sv) == 0) {
929 if (t - tokenbuf + unref > 10) {
930 strcpy(tokenbuf + unref + 3,"...");
936 switch (SvTYPE(sv)) {
976 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
999 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1001 sprintf(t,"(\"%.127s\")",SvPVX(sv));
1003 else if (SvNOKp(sv))
1004 sprintf(t,"(%g)",SvNVX(sv));
1005 else if (SvIOKp(sv))
1006 sprintf(t,"(%ld)",(long)SvIVX(sv));
1027 char *s = SvPVX(sv);
1028 SvLEN(sv) += SvIVX(sv);
1029 SvPVX(sv) -= SvIVX(sv);
1031 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1033 SvFLAGS(sv) &= ~SVf_OOK;
1041 register I32 newlen;
1043 unsigned long newlen;
1049 if (newlen >= 0x10000) {
1050 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1056 if (SvTYPE(sv) < SVt_PV) {
1057 sv_upgrade(sv, SVt_PV);
1060 else if (SvOOK(sv)) { /* pv is offset? */
1063 if (newlen > SvLEN(sv))
1064 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1068 if (newlen > SvLEN(sv)) { /* need more room? */
1070 Renew(s,newlen,char);
1072 New(703,s,newlen,char);
1074 SvLEN_set(sv, newlen);
1084 if (SvTHINKFIRST(sv)) {
1085 if (SvREADONLY(sv) && curcop != &compiling)
1090 switch (SvTYPE(sv)) {
1092 sv_upgrade(sv, SVt_IV);
1095 sv_upgrade(sv, SVt_PVNV);
1099 sv_upgrade(sv, SVt_PVIV);
1113 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1114 op_name[op->op_type]);
1116 (void)SvIOK_only(sv); /* validate number */
1126 if (SvTHINKFIRST(sv)) {
1127 if (SvREADONLY(sv) && curcop != &compiling)
1132 switch (SvTYPE(sv)) {
1135 sv_upgrade(sv, SVt_NV);
1141 sv_upgrade(sv, SVt_PVNV);
1148 (void)SvOOK_off(sv);
1161 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1162 op_name[op->op_type]);
1165 (void)SvNOK_only(sv); /* validate number */
1178 for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
1180 if (ch & 128 && !isprint(ch)) {
1200 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1201 op_name[op->op_type]);
1203 warn("Argument \"%s\" isn't numeric", tmpbuf);
1212 if (SvGMAGICAL(sv)) {
1217 if (SvNVX(sv) < 0.0)
1218 return I_V(SvNVX(sv));
1220 return (IV) U_V(SvNVX(sv));
1222 if (SvPOKp(sv) && SvLEN(sv)) {
1223 if (dowarn && !looks_like_number(sv))
1225 return (IV)atol(SvPVX(sv));
1231 if (SvTHINKFIRST(sv)) {
1235 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1236 return SvIV(tmpstr);
1237 #endif /* OVERLOAD */
1238 return (IV)SvRV(sv);
1240 if (SvREADONLY(sv)) {
1242 if (SvNVX(sv) < 0.0)
1243 return I_V(SvNVX(sv));
1245 return (IV) U_V(SvNVX(sv));
1247 if (SvPOKp(sv) && SvLEN(sv)) {
1248 if (dowarn && !looks_like_number(sv))
1250 return (IV)atol(SvPVX(sv));
1257 switch (SvTYPE(sv)) {
1259 sv_upgrade(sv, SVt_IV);
1262 sv_upgrade(sv, SVt_PVIV);
1265 sv_upgrade(sv, SVt_PVNV);
1270 if (SvNVX(sv) < 0.0)
1271 SvIVX(sv) = I_V(SvNVX(sv));
1273 SvIVX(sv) = (IV) U_V(SvNVX(sv));
1275 else if (SvPOKp(sv) && SvLEN(sv)) {
1276 if (dowarn && !looks_like_number(sv))
1279 SvIVX(sv) = (IV)atol(SvPVX(sv));
1282 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1287 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1288 (unsigned long)sv,(long)SvIVX(sv)));
1298 if (SvGMAGICAL(sv)) {
1302 if (SvPOKp(sv) && SvLEN(sv)) {
1303 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1305 return atof(SvPVX(sv));
1308 return (double)SvIVX(sv);
1313 if (SvTHINKFIRST(sv)) {
1317 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1318 return SvNV(tmpstr);
1319 #endif /* OVERLOAD */
1320 return (double)(unsigned long)SvRV(sv);
1322 if (SvREADONLY(sv)) {
1323 if (SvPOKp(sv) && SvLEN(sv)) {
1324 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1326 return atof(SvPVX(sv));
1329 return (double)SvIVX(sv);
1335 if (SvTYPE(sv) < SVt_NV) {
1336 if (SvTYPE(sv) == SVt_IV)
1337 sv_upgrade(sv, SVt_PVNV);
1339 sv_upgrade(sv, SVt_NV);
1340 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1342 else if (SvTYPE(sv) < SVt_PVNV)
1343 sv_upgrade(sv, SVt_PVNV);
1345 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1347 SvNVX(sv) = (double)SvIVX(sv);
1349 else if (SvPOKp(sv) && SvLEN(sv)) {
1350 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1352 SvNVX(sv) = atof(SvPVX(sv));
1355 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1360 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1376 if (SvGMAGICAL(sv)) {
1383 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1387 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1395 if (SvTHINKFIRST(sv)) {
1399 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1400 return SvPV(tmpstr,*lp);
1401 #endif /* OVERLOAD */
1406 switch (SvTYPE(sv)) {
1415 case SVt_PVMG: s = "SCALAR"; break;
1416 case SVt_PVLV: s = "LVALUE"; break;
1417 case SVt_PVAV: s = "ARRAY"; break;
1418 case SVt_PVHV: s = "HASH"; break;
1419 case SVt_PVCV: s = "CODE"; break;
1420 case SVt_PVGV: s = "GLOB"; break;
1421 case SVt_PVFM: s = "FORMATLINE"; break;
1422 case SVt_PVIO: s = "FILEHANDLE"; break;
1423 default: s = "UNKNOWN"; break;
1426 sprintf(tokenbuf, "%s=%s(0x%lx)",
1427 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1429 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1435 if (SvREADONLY(sv)) {
1437 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1441 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1450 if (!SvUPGRADE(sv, SVt_PV))
1453 if (SvTYPE(sv) < SVt_PVNV)
1454 sv_upgrade(sv, SVt_PVNV);
1457 olderrno = errno; /* some Xenix systems wipe out errno here */
1459 if (SvNVX(sv) == 0.0)
1460 (void)strcpy(s,"0");
1463 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1465 #ifdef FIXNEGATIVEZERO
1466 if (*s == '-' && s[1] == '0' && !s[2])
1475 else if (SvIOKp(sv)) {
1476 if (SvTYPE(sv) < SVt_PVIV)
1477 sv_upgrade(sv, SVt_PVIV);
1480 olderrno = errno; /* some Xenix systems wipe out errno here */
1481 (void)sprintf(s,"%ld",(long)SvIVX(sv));
1486 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1492 *lp = s - SvPVX(sv);
1495 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1499 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1500 /* Sneaky stuff here */
1503 sv = sv_newmortal();
1504 *lp = strlen(tokenbuf);
1505 sv_setpvn(sv, tokenbuf, *lp);
1511 #ifdef FIXNEGATIVEZERO
1512 if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
1513 strcpy(tokenbuf,"0");
1515 (void)SvUPGRADE(sv, SVt_PV);
1516 len = *lp = strlen(tokenbuf);
1517 s = SvGROW(sv, len + 1);
1519 (void)strcpy(s, tokenbuf);
1520 /* NO SvPOK_on(sv) here! */
1525 /* This function is only called on magical items */
1539 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1540 return SvTRUE(tmpsv);
1542 #endif /* OVERLOAD */
1543 return SvRV(sv) != 0;
1547 if ((Xpv = (XPV*)SvANY(sv)) &&
1548 (*Xpv->xpv_pv > '0' ||
1550 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1557 return SvIVX(sv) != 0;
1560 return SvNVX(sv) != 0.0;
1567 /* Note: sv_setsv() should not be called with a source string that needs
1568 * to be reused, since it may destroy the source string if it is marked
1577 register U32 sflags;
1583 if (SvTHINKFIRST(dstr)) {
1584 if (SvREADONLY(dstr) && curcop != &compiling)
1591 stype = SvTYPE(sstr);
1592 dtype = SvTYPE(dstr);
1594 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1595 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1596 sv_setpvn(dstr, "", 0);
1597 (void)SvPOK_only(dstr);
1598 dtype = SvTYPE(dstr);
1603 #endif /* OVERLOAD */
1604 /* There's a lot of redundancy below but we're going for speed here */
1608 (void)SvOK_off(dstr);
1611 if (dtype <= SVt_PV) {
1613 sv_upgrade(dstr, SVt_IV);
1614 else if (dtype == SVt_NV)
1615 sv_upgrade(dstr, SVt_PVNV);
1616 else if (dtype <= SVt_PV)
1617 sv_upgrade(dstr, SVt_PVIV);
1621 if (dtype <= SVt_PVIV) {
1623 sv_upgrade(dstr, SVt_NV);
1624 else if (dtype == SVt_PVIV)
1625 sv_upgrade(dstr, SVt_PVNV);
1626 else if (dtype <= SVt_PV)
1627 sv_upgrade(dstr, SVt_PVNV);
1632 sv_upgrade(dstr, SVt_RV);
1633 else if (dtype == SVt_PVGV &&
1634 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1637 if (curcop->cop_stash != GvSTASH(dstr))
1638 GvIMPORTED_on(dstr);
1647 sv_upgrade(dstr, SVt_PV);
1650 if (dtype < SVt_PVIV)
1651 sv_upgrade(dstr, SVt_PVIV);
1654 if (dtype < SVt_PVNV)
1655 sv_upgrade(dstr, SVt_PVNV);
1659 sv_upgrade(dstr, SVt_PVLV);
1667 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1668 op_name[op->op_type]);
1670 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1674 if (dtype <= SVt_PVGV) {
1676 if (dtype != SVt_PVGV) {
1677 char *name = GvNAME(sstr);
1678 STRLEN len = GvNAMELEN(sstr);
1679 sv_upgrade(dstr, SVt_PVGV);
1680 sv_magic(dstr, dstr, '*', name, len);
1681 GvSTASH(dstr) = GvSTASH(sstr);
1682 GvNAME(dstr) = savepvn(name, len);
1683 GvNAMELEN(dstr) = len;
1684 SvFAKE_on(dstr); /* can coerce to non-glob */
1686 (void)SvOK_off(dstr);
1687 GvINTRO_off(dstr); /* one-shot flag */
1689 GvGP(dstr) = gp_ref(GvGP(sstr));
1691 if (curcop->cop_stash != GvSTASH(dstr))
1692 GvIMPORTED_on(dstr);
1700 sv_upgrade(dstr, stype);
1701 if (SvGMAGICAL(sstr))
1705 sflags = SvFLAGS(sstr);
1707 if (sflags & SVf_ROK) {
1708 if (dtype >= SVt_PV) {
1709 if (dtype == SVt_PVGV) {
1710 SV *sref = SvREFCNT_inc(SvRV(sstr));
1712 int intro = GvINTRO(dstr);
1716 GvGP(dstr)->gp_refcnt--;
1717 GvINTRO_off(dstr); /* one-shot flag */
1718 Newz(602,gp, 1, GP);
1721 GvSV(dstr) = NEWSV(72,0);
1722 GvLINE(dstr) = curcop->cop_line;
1723 GvEGV(dstr) = (GV*)dstr;
1726 switch (SvTYPE(sref)) {
1729 SAVESPTR(GvAV(dstr));
1731 dref = (SV*)GvAV(dstr);
1732 GvAV(dstr) = (AV*)sref;
1733 if (curcop->cop_stash != GvSTASH(dstr))
1734 GvIMPORTED_AV_on(dstr);
1738 SAVESPTR(GvHV(dstr));
1740 dref = (SV*)GvHV(dstr);
1741 GvHV(dstr) = (HV*)sref;
1742 if (curcop->cop_stash != GvSTASH(dstr))
1743 GvIMPORTED_HV_on(dstr);
1747 SAVESPTR(GvCV(dstr));
1749 CV* cv = GvCV(dstr);
1752 if (dowarn && sref != dref &&
1753 !GvCVGEN((GV*)dstr) &&
1754 (CvROOT(cv) || CvXSUB(cv)) )
1755 warn("Subroutine %s redefined",
1756 GvENAME((GV*)dstr));
1760 if (GvCV(dstr) != (CV*)sref) {
1761 GvCV(dstr) = (CV*)sref;
1762 GvASSUMECV_on(dstr);
1764 if (curcop->cop_stash != GvSTASH(dstr))
1765 GvIMPORTED_CV_on(dstr);
1769 SAVESPTR(GvIOp(dstr));
1771 dref = (SV*)GvIOp(dstr);
1772 GvIOp(dstr) = (IO*)sref;
1776 SAVESPTR(GvSV(dstr));
1778 dref = (SV*)GvSV(dstr);
1780 if (curcop->cop_stash != GvSTASH(dstr))
1781 GvIMPORTED_SV_on(dstr);
1792 (void)SvOOK_off(dstr); /* backoff */
1793 Safefree(SvPVX(dstr));
1794 SvLEN(dstr)=SvCUR(dstr)=0;
1797 (void)SvOK_off(dstr);
1798 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1800 if (sflags & SVp_NOK) {
1802 SvNVX(dstr) = SvNVX(sstr);
1804 if (sflags & SVp_IOK) {
1805 (void)SvIOK_on(dstr);
1806 SvIVX(dstr) = SvIVX(sstr);
1809 if (SvAMAGIC(sstr)) {
1812 #endif /* OVERLOAD */
1814 else if (sflags & SVp_POK) {
1817 * Check to see if we can just swipe the string. If so, it's a
1818 * possible small lose on short strings, but a big win on long ones.
1819 * It might even be a win on short strings if SvPVX(dstr)
1820 * has to be allocated and SvPVX(sstr) has to be freed.
1823 if (SvTEMP(sstr) && /* slated for free anyway? */
1824 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
1826 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
1828 SvFLAGS(dstr) &= ~SVf_OOK;
1829 Safefree(SvPVX(dstr) - SvIVX(dstr));
1832 Safefree(SvPVX(dstr));
1834 (void)SvPOK_only(dstr);
1835 SvPV_set(dstr, SvPVX(sstr));
1836 SvLEN_set(dstr, SvLEN(sstr));
1837 SvCUR_set(dstr, SvCUR(sstr));
1839 (void)SvOK_off(sstr);
1840 SvPV_set(sstr, Nullch);
1845 else { /* have to copy actual string */
1846 STRLEN len = SvCUR(sstr);
1848 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1849 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1850 SvCUR_set(dstr, len);
1851 *SvEND(dstr) = '\0';
1852 (void)SvPOK_only(dstr);
1855 if (sflags & SVp_NOK) {
1857 SvNVX(dstr) = SvNVX(sstr);
1859 if (sflags & SVp_IOK) {
1860 (void)SvIOK_on(dstr);
1861 SvIVX(dstr) = SvIVX(sstr);
1864 else if (sflags & SVp_NOK) {
1865 SvNVX(dstr) = SvNVX(sstr);
1866 (void)SvNOK_only(dstr);
1868 (void)SvIOK_on(dstr);
1869 SvIVX(dstr) = SvIVX(sstr);
1872 else if (sflags & SVp_IOK) {
1873 (void)SvIOK_only(dstr);
1874 SvIVX(dstr) = SvIVX(sstr);
1877 (void)SvOK_off(dstr);
1883 sv_setpvn(sv,ptr,len)
1886 register STRLEN len;
1888 assert(len >= 0); /* STRLEN is probably unsigned, so this may
1889 elicit a warning, but it won't hurt. */
1890 if (SvTHINKFIRST(sv)) {
1891 if (SvREADONLY(sv) && curcop != &compiling)
1900 if (SvTYPE(sv) >= SVt_PV) {
1901 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1904 else if (!sv_upgrade(sv, SVt_PV))
1906 SvGROW(sv, len + 1);
1907 Move(ptr,SvPVX(sv),len,char);
1910 (void)SvPOK_only(sv); /* validate pointer */
1919 register STRLEN len;
1921 if (SvTHINKFIRST(sv)) {
1922 if (SvREADONLY(sv) && curcop != &compiling)
1932 if (SvTYPE(sv) >= SVt_PV) {
1933 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1936 else if (!sv_upgrade(sv, SVt_PV))
1938 SvGROW(sv, len + 1);
1939 Move(ptr,SvPVX(sv),len+1,char);
1941 (void)SvPOK_only(sv); /* validate pointer */
1946 sv_usepvn(sv,ptr,len)
1949 register STRLEN len;
1951 if (SvTHINKFIRST(sv)) {
1952 if (SvREADONLY(sv) && curcop != &compiling)
1957 if (!SvUPGRADE(sv, SVt_PV))
1964 Safefree(SvPVX(sv));
1965 Renew(ptr, len+1, char);
1968 SvLEN_set(sv, len+1);
1970 (void)SvPOK_only(sv); /* validate pointer */
1975 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1979 register STRLEN delta;
1981 if (!ptr || !SvPOKp(sv))
1983 if (SvTHINKFIRST(sv)) {
1984 if (SvREADONLY(sv) && curcop != &compiling)
1989 if (SvTYPE(sv) < SVt_PVIV)
1990 sv_upgrade(sv,SVt_PVIV);
1994 SvFLAGS(sv) |= SVf_OOK;
1996 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1997 delta = ptr - SvPVX(sv);
2005 sv_catpvn(sv,ptr,len)
2008 register STRLEN len;
2013 junk = SvPV_force(sv, tlen);
2014 SvGROW(sv, tlen + len + 1);
2017 Move(ptr,SvPVX(sv)+tlen,len,char);
2020 (void)SvPOK_only(sv); /* validate pointer */
2033 if (s = SvPV(sstr, len))
2034 sv_catpvn(dstr,s,len);
2042 register STRLEN len;
2048 junk = SvPV_force(sv, tlen);
2050 SvGROW(sv, tlen + len + 1);
2053 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2055 (void)SvPOK_only(sv); /* validate pointer */
2075 sv_upgrade(sv, SVt_PV);
2076 SvGROW(sv, len + 1);
2081 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2084 sv_magic(sv, obj, how, name, namlen)
2093 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", how))
2095 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2096 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2103 if (!SvUPGRADE(sv, SVt_PVMG))
2106 Newz(702,mg, 1, MAGIC);
2107 mg->mg_moremagic = SvMAGIC(sv);
2110 if (!obj || obj == sv || how == '#')
2113 mg->mg_obj = SvREFCNT_inc(obj);
2114 mg->mg_flags |= MGf_REFCOUNTED;
2117 mg->mg_len = namlen;
2120 mg->mg_ptr = savepvn(name, namlen);
2121 else if (namlen == HEf_SVKEY)
2122 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2126 mg->mg_virtual = &vtbl_sv;
2130 mg->mg_virtual = &vtbl_amagic;
2133 mg->mg_virtual = &vtbl_amagicelem;
2138 #endif /* OVERLOAD */
2140 mg->mg_virtual = &vtbl_bm;
2143 mg->mg_virtual = &vtbl_env;
2146 mg->mg_virtual = &vtbl_envelem;
2149 mg->mg_virtual = &vtbl_mglob;
2152 mg->mg_virtual = &vtbl_isa;
2155 mg->mg_virtual = &vtbl_isaelem;
2162 mg->mg_virtual = &vtbl_dbline;
2165 mg->mg_virtual = &vtbl_pack;
2169 mg->mg_virtual = &vtbl_packelem;
2172 mg->mg_virtual = &vtbl_sig;
2175 mg->mg_virtual = &vtbl_sigelem;
2178 mg->mg_virtual = &vtbl_taint;
2182 mg->mg_virtual = &vtbl_uvar;
2185 mg->mg_virtual = &vtbl_vec;
2188 mg->mg_virtual = &vtbl_substr;
2191 mg->mg_virtual = &vtbl_glob;
2194 mg->mg_virtual = &vtbl_arylen;
2197 mg->mg_virtual = &vtbl_pos;
2199 case '~': /* Reserved for use by extensions not perl internals. */
2200 /* Useful for attaching extension internal data to perl vars. */
2201 /* Note that multiple extensions may clash if magical scalars */
2202 /* etc holding private data from one are passed to another. */
2206 croak("Don't know how to handle magic of type '%c'", how);
2210 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2214 sv_unmagic(sv, type)
2220 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2223 for (mg = *mgp; mg; mg = *mgp) {
2224 if (mg->mg_type == type) {
2225 MGVTBL* vtbl = mg->mg_virtual;
2226 *mgp = mg->mg_moremagic;
2227 if (vtbl && vtbl->svt_free)
2228 (*vtbl->svt_free)(sv, mg);
2229 if (mg->mg_ptr && mg->mg_type != 'g')
2230 if (mg->mg_len >= 0)
2231 Safefree(mg->mg_ptr);
2232 else if (mg->mg_len == HEf_SVKEY)
2233 SvREFCNT_dec((SV*)mg->mg_ptr);
2234 if (mg->mg_flags & MGf_REFCOUNTED)
2235 SvREFCNT_dec(mg->mg_obj);
2239 mgp = &mg->mg_moremagic;
2243 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2250 sv_insert(bigstr,offset,len,little,littlelen)
2259 register char *midend;
2260 register char *bigend;
2264 croak("Can't modify non-existent substring");
2265 SvPV_force(bigstr, na);
2267 i = littlelen - len;
2268 if (i > 0) { /* string might grow */
2269 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2270 mid = big + offset + len;
2271 midend = bigend = big + SvCUR(bigstr);
2274 while (midend > mid) /* shove everything down */
2275 *--bigend = *--midend;
2276 Move(little,big+offset,littlelen,char);
2282 Move(little,SvPVX(bigstr)+offset,len,char);
2287 big = SvPVX(bigstr);
2290 bigend = big + SvCUR(bigstr);
2292 if (midend > bigend)
2293 croak("panic: sv_insert");
2295 if (mid - big > bigend - midend) { /* faster to shorten from end */
2297 Move(little, mid, littlelen,char);
2300 i = bigend - midend;
2302 Move(midend, mid, i,char);
2306 SvCUR_set(bigstr, mid - big);
2309 else if (i = mid - big) { /* faster from front */
2310 midend -= littlelen;
2312 sv_chop(bigstr,midend-i);
2317 Move(little, mid, littlelen,char);
2319 else if (littlelen) {
2320 midend -= littlelen;
2321 sv_chop(bigstr,midend);
2322 Move(little,midend,littlelen,char);
2325 sv_chop(bigstr,midend);
2330 /* make sv point to what nstr did */
2337 U32 refcnt = SvREFCNT(sv);
2338 if (SvTHINKFIRST(sv)) {
2339 if (SvREADONLY(sv) && curcop != &compiling)
2344 if (SvREFCNT(nsv) != 1)
2345 warn("Reference miscount in sv_replace()");
2346 if (SvMAGICAL(sv)) {
2350 sv_upgrade(nsv, SVt_PVMG);
2351 SvMAGIC(nsv) = SvMAGIC(sv);
2352 SvFLAGS(nsv) |= SvMAGICAL(sv);
2358 StructCopy(nsv,sv,SV);
2359 SvREFCNT(sv) = refcnt;
2360 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2369 assert(SvREFCNT(sv) == 0);
2375 if (defstash) { /* Still have a symbol table? */
2376 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2379 SAVEFREESV(SvSTASH(sv));
2380 if (destructor && GvCV(destructor)) {
2384 sv_upgrade(&ref, SVt_RV);
2385 SvRV(&ref) = SvREFCNT_inc(sv);
2392 perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
2393 del_XRV(SvANY(&ref));
2399 SvREFCNT_dec(SvSTASH(sv));
2401 SvOBJECT_off(sv); /* Curse the object. */
2402 if (SvTYPE(sv) != SVt_PVIO)
2403 --sv_objcount; /* XXX Might want something more general */
2408 && (ret = perl_get_sv("DB::ret", FALSE))
2409 && SvROK(ret) && SvRV(ret) == sv && SvREFCNT(sv) == 1) {
2410 /* Debugger is prone to dangling references. */
2415 croak("panic: dangling references in DESTROY");
2419 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2421 switch (SvTYPE(sv)) {
2424 Safefree(IoTOP_NAME(sv));
2425 Safefree(IoFMT_NAME(sv));
2426 Safefree(IoBOTTOM_NAME(sv));
2442 Safefree(GvNAME(sv));
2449 (void)SvOOK_off(sv);
2454 SvREFCNT_dec(SvRV(sv));
2455 else if (SvPVX(sv) && SvLEN(sv))
2456 Safefree(SvPVX(sv));
2466 switch (SvTYPE(sv)) {
2482 del_XPVIV(SvANY(sv));
2485 del_XPVNV(SvANY(sv));
2488 del_XPVMG(SvANY(sv));
2491 del_XPVLV(SvANY(sv));
2494 del_XPVAV(SvANY(sv));
2497 del_XPVHV(SvANY(sv));
2500 del_XPVCV(SvANY(sv));
2503 del_XPVGV(SvANY(sv));
2506 del_XPVBM(SvANY(sv));
2509 del_XPVFM(SvANY(sv));
2512 del_XPVIO(SvANY(sv));
2515 SvFLAGS(sv) &= SVf_BREAK;
2516 SvFLAGS(sv) |= SVTYPEMASK;
2534 if (SvREADONLY(sv)) {
2535 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2538 if (SvREFCNT(sv) == 0) {
2539 if (SvFLAGS(sv) & SVf_BREAK)
2541 if (in_clean_all) /* All is fair */
2543 warn("Attempt to free unreferenced scalar");
2546 if (--SvREFCNT(sv) > 0)
2550 warn("Attempt to free temp prematurely");
2571 junk = SvPV(sv, len);
2590 pv1 = SvPV(str1, cur1);
2595 pv2 = SvPV(str2, cur2);
2600 return !memcmp(pv1, pv2, cur1);
2619 pv1 = SvPV(str1, cur1);
2626 pv2 = SvPV(str2, cur2);
2629 return cur2 ? -1 : 0;
2635 if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
2636 return retval < 0 ? -1 : 1;
2641 else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
2642 return retval < 0 ? -1 : 1;
2643 else if (cur1 == cur2)
2650 sv_gets(sv,fp,append)
2652 register PerlIO *fp;
2657 register STDCHAR rslast;
2658 register STDCHAR *bp;
2662 if (SvTHINKFIRST(sv)) {
2663 if (SvREADONLY(sv) && curcop != &compiling)
2668 if (!SvUPGRADE(sv, SVt_PV))
2675 else if (RsPARA(rs)) {
2680 rsptr = SvPV(rs, rslen);
2681 rslast = rslen ? rsptr[rslen - 1] : '\0';
2683 if (RsPARA(rs)) { /* have to do this both before and after */
2684 do { /* to make sure file boundaries work right */
2687 i = PerlIO_getc(fp);
2691 PerlIO_ungetc(fp,i);
2697 /* See if we know enough about I/O mechanism to cheat it ! */
2699 /* This used to be #ifdef test - it is made run-time test for ease
2700 of abstracting out stdio interface. One call should be cheap
2701 enough here - and may even be a macro allowing compile
2705 if (PerlIO_fast_gets(fp)) {
2708 * We're going to steal some values from the stdio struct
2709 * and put EVERYTHING in the innermost loop into registers.
2711 register STDCHAR *ptr;
2716 /* Here is some breathtakingly efficient cheating */
2718 cnt = PerlIO_get_cnt(fp); /* get count into register */
2719 (void)SvPOK_only(sv); /* validate pointer */
2720 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2721 if (cnt > 80 && SvLEN(sv) > append) {
2722 shortbuffered = cnt - SvLEN(sv) + append + 1;
2723 cnt -= shortbuffered;
2727 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2732 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
2733 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
2738 while (cnt > 0) { /* this | eat */
2740 if ((*bp++ = *ptr++) == rslast) /* really | dust */
2741 goto thats_all_folks; /* screams | sed :-) */
2745 memcpy((char*)bp, (char*)ptr, cnt); /* this | eat */
2746 bp += cnt; /* screams | dust */
2747 ptr += cnt; /* louder | sed :-) */
2752 if (shortbuffered) { /* oh well, must extend */
2753 cnt = shortbuffered;
2755 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2757 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2758 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2762 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
2763 /* This used to call 'filbuf' in stdio form, but as that behaves like getc
2764 when cnt <= 0 we use PerlIO_getc here to avoid another abstraction.
2765 This may also avoid issues with different named 'filbuf' equivalents
2767 i = PerlIO_getc(fp); /* get more characters */
2768 cnt = PerlIO_get_cnt(fp);
2769 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
2771 if (i == EOF) /* all done for ever? */
2772 goto thats_really_all_folks;
2774 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2776 SvGROW(sv, bpx + cnt + 2);
2777 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2779 *bp++ = i; /* store character from PerlIO_getc */
2781 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
2782 goto thats_all_folks;
2786 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
2787 memcmp((char*)bp - rslen, rsptr, rslen))
2788 goto screamer; /* go back to the fray */
2789 thats_really_all_folks:
2791 cnt += shortbuffered;
2792 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
2794 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
2798 /*The big, slow, and stupid way */
2803 register STDCHAR *bpe = buf + sizeof(buf);
2805 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
2806 ; /* keep reading */
2810 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
2811 i = cnt ? (U8)buf[cnt - 1] : EOF;
2815 sv_catpvn(sv, (char *) buf, cnt);
2817 sv_setpvn(sv, (char *) buf, cnt);
2819 if (i != EOF && /* joy */
2821 SvCUR(sv) < rslen ||
2822 memcmp(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
2829 if (RsPARA(rs)) { /* have to do this both before and after */
2830 while (i != EOF) { /* to make sure file boundaries work right */
2831 i = PerlIO_getc(fp);
2833 PerlIO_ungetc(fp,i);
2839 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
2852 if (SvTHINKFIRST(sv)) {
2853 if (SvREADONLY(sv) && curcop != &compiling)
2857 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
2858 #endif /* OVERLOAD */
2864 flags = SvFLAGS(sv);
2865 if (flags & SVp_IOK) {
2866 (void)SvIOK_only(sv);
2870 if (flags & SVp_NOK) {
2872 (void)SvNOK_only(sv);
2875 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2876 if ((flags & SVTYPEMASK) < SVt_PVNV)
2877 sv_upgrade(sv, SVt_NV);
2879 (void)SvNOK_only(sv);
2883 while (isALPHA(*d)) d++;
2884 while (isDIGIT(*d)) d++;
2886 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2890 while (d >= SvPVX(sv)) {
2900 *(d--) -= 'z' - 'a' + 1;
2903 /* oh,oh, the number grew */
2904 SvGROW(sv, SvCUR(sv) + 2);
2906 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2922 if (SvTHINKFIRST(sv)) {
2923 if (SvREADONLY(sv) && curcop != &compiling)
2927 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
2928 #endif /* OVERLOAD */
2934 flags = SvFLAGS(sv);
2935 if (flags & SVp_IOK) {
2936 (void)SvIOK_only(sv);
2940 if (flags & SVp_NOK) {
2942 (void)SvNOK_only(sv);
2945 if (!(flags & SVp_POK)) {
2946 if ((flags & SVTYPEMASK) < SVt_PVNV)
2947 sv_upgrade(sv, SVt_NV);
2949 (void)SvNOK_only(sv);
2952 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2955 /* Make a string that will exist for the duration of the expression
2956 * evaluation. Actually, it may have to last longer than that, but
2957 * hopefully we won't free it until it has been assigned to a
2958 * permanent location. */
2964 Renew(tmps_stack, tmps_max, SV*);
2968 sv_mortalcopy(oldstr)
2977 sv_setsv(sv,oldstr);
2978 if (++tmps_ix >= tmps_max)
2980 tmps_stack[tmps_ix] = sv;
2993 SvFLAGS(sv) = SVs_TEMP;
2994 if (++tmps_ix >= tmps_max)
2996 tmps_stack[tmps_ix] = sv;
3000 /* same thing without the copying */
3008 if (SvREADONLY(sv) && curcop != &compiling)
3010 if (++tmps_ix >= tmps_max)
3012 tmps_stack[tmps_ix] = sv;
3030 sv_setpvn(sv,s,len);
3072 sv_upgrade(sv, SVt_RV);
3074 SvRV(sv) = SvREFCNT_inc(ref);
3079 /* make an exact duplicate of old */
3089 if (SvTYPE(old) == SVTYPEMASK) {
3090 warn("semi-panic: attempt to dup freed string");
3120 if (!*s) { /* reset ?? searches */
3121 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3122 pm->op_pmflags &= ~PMf_USED;
3127 /* reset variables */
3129 if (!HvARRAY(stash))
3132 Zero(todo, 256, char);
3139 for ( ; i <= max; i++) {
3142 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3143 for (entry = HvARRAY(stash)[i];
3145 entry = HeNEXT(entry)) {
3146 if (!todo[(U8)*HeKEY(entry)])
3148 gv = (GV*)HeVAL(entry);
3151 if (SvTYPE(sv) >= SVt_PV) {
3154 if (SvPVX(sv) != Nullch)
3161 if (HvNAME(GvHV(gv)))
3164 #ifndef VMS /* VMS has no environ array */
3166 environ[0] = Nullch;
3175 sv_2cv(sv, st, gvp, lref)
3185 return *gvp = Nullgv, Nullcv;
3186 switch (SvTYPE(sv)) {
3206 if (SvTYPE(cv) != SVt_PVCV)
3207 croak("Not a subroutine reference");
3215 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3221 if (lref && !GvCV(gv)) {
3224 tmpsv = NEWSV(704,0);
3225 gv_efullname(tmpsv, gv, Nullch);
3226 newSUB(start_subparse(),
3227 newSVOP(OP_CONST, 0, tmpsv),
3232 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3249 if ((Xpv = (XPV*)SvANY(sv)) &&
3250 (*Xpv->xpv_pv > '0' ||
3252 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3259 return SvIVX(sv) != 0;
3262 return SvNVX(sv) != 0.0;
3264 return sv_2bool(sv);
3288 return (double)SvIVX(Sv);
3303 return sv_2pv(sv, lp);
3308 sv_pvn_force(sv, lp)
3314 if (SvREADONLY(sv) && curcop != &compiling)
3321 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3322 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3328 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3329 op_name[op->op_type]);
3333 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3338 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3339 SvGROW(sv, len + 1);
3340 Move(s,SvPVX(sv),len,char);
3345 SvPOK_on(sv); /* validate pointer */
3347 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3348 (unsigned long)sv,SvPVX(sv)));
3359 if (ob && SvOBJECT(sv))
3360 return HvNAME(SvSTASH(sv));
3362 switch (SvTYPE(sv)) {
3376 case SVt_PVLV: return "LVALUE";
3377 case SVt_PVAV: return "ARRAY";
3378 case SVt_PVHV: return "HASH";
3379 case SVt_PVCV: return "CODE";
3380 case SVt_PVGV: return "GLOB";
3381 case SVt_PVFM: return "FORMLINE";
3382 default: return "UNKNOWN";
3410 return strEQ(HvNAME(SvSTASH(sv)), name);
3414 newSVrv(rv, classname)
3424 sv_upgrade(rv, SVt_RV);
3425 SvRV(rv) = SvREFCNT_inc(sv);
3429 HV* stash = gv_stashpv(classname, TRUE);
3430 (void)sv_bless(rv, stash);
3436 sv_setref_pv(rv, classname, pv)
3442 sv_setsv(rv, &sv_undef);
3444 sv_setiv(newSVrv(rv,classname), (IV)pv);
3449 sv_setref_iv(rv, classname, iv)
3454 sv_setiv(newSVrv(rv,classname), iv);
3459 sv_setref_nv(rv, classname, nv)
3464 sv_setnv(newSVrv(rv,classname), nv);
3469 sv_setref_pvn(rv, classname, pv, n)
3475 sv_setpvn(newSVrv(rv,classname), pv, n);
3486 croak("Can't bless non-reference value");
3488 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3489 if (SvREADONLY(ref))
3491 if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
3496 (void)SvUPGRADE(ref, SVt_PVMG);
3497 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3501 if (Gv_AMG(stash)) {
3504 #endif /* OVERLOAD */
3513 assert(SvTYPE(sv) == SVt_PVGV);
3517 sv_unmagic(sv, '*');
3518 Safefree(GvNAME(sv));
3520 SvFLAGS(sv) &= ~SVTYPEMASK;
3521 SvFLAGS(sv) |= SVt_PVMG;
3532 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3535 sv_2mortal(rv); /* Schedule for freeing later */
3549 PerlIO_printf(Perl_debug_log, "SV = 0\n");
3553 flags = SvFLAGS(sv);
3556 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
3557 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
3559 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
3560 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
3561 if (flags & SVs_PADMY) strcat(d, "PADMY,");
3562 if (flags & SVs_TEMP) strcat(d, "TEMP,");
3563 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
3564 if (flags & SVs_GMG) strcat(d, "GMG,");
3565 if (flags & SVs_SMG) strcat(d, "SMG,");
3566 if (flags & SVs_RMG) strcat(d, "RMG,");
3569 if (flags & SVf_IOK) strcat(d, "IOK,");
3570 if (flags & SVf_NOK) strcat(d, "NOK,");
3571 if (flags & SVf_POK) strcat(d, "POK,");
3572 if (flags & SVf_ROK) strcat(d, "ROK,");
3573 if (flags & SVf_OOK) strcat(d, "OOK,");
3574 if (flags & SVf_FAKE) strcat(d, "FAKE,");
3575 if (flags & SVf_READONLY) strcat(d, "READONLY,");
3579 if (flags & SVf_AMAGIC) strcat(d, "OVERLOAD,");
3580 #endif /* OVERLOAD */
3581 if (flags & SVp_IOK) strcat(d, "pIOK,");
3582 if (flags & SVp_NOK) strcat(d, "pNOK,");
3583 if (flags & SVp_POK) strcat(d, "pPOK,");
3584 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
3588 if (CvANON(sv)) strcat(d, "ANON,");
3589 if (CvCLONE(sv)) strcat(d, "CLONE,");
3590 if (CvCLONED(sv)) strcat(d, "CLONED,");
3593 if (GvMULTI(sv)) strcat(d, "MULTI,");
3595 if (flags & SVpgv_AM) strcat(d, "withOVERLOAD,");
3596 #endif /* OVERLOAD */
3605 PerlIO_printf(Perl_debug_log, "SV = ");
3608 PerlIO_printf(Perl_debug_log, "NULL%s\n", tmpbuf);
3611 PerlIO_printf(Perl_debug_log, "IV%s\n", tmpbuf);
3614 PerlIO_printf(Perl_debug_log, "NV%s\n", tmpbuf);
3617 PerlIO_printf(Perl_debug_log, "RV%s\n", tmpbuf);
3620 PerlIO_printf(Perl_debug_log, "PV%s\n", tmpbuf);
3623 PerlIO_printf(Perl_debug_log, "PVIV%s\n", tmpbuf);
3626 PerlIO_printf(Perl_debug_log, "PVNV%s\n", tmpbuf);
3629 PerlIO_printf(Perl_debug_log, "PVBM%s\n", tmpbuf);
3632 PerlIO_printf(Perl_debug_log, "PVMG%s\n", tmpbuf);
3635 PerlIO_printf(Perl_debug_log, "PVLV%s\n", tmpbuf);
3638 PerlIO_printf(Perl_debug_log, "PVAV%s\n", tmpbuf);
3641 PerlIO_printf(Perl_debug_log, "PVHV%s\n", tmpbuf);
3644 PerlIO_printf(Perl_debug_log, "PVCV%s\n", tmpbuf);
3647 PerlIO_printf(Perl_debug_log, "PVGV%s\n", tmpbuf);
3650 PerlIO_printf(Perl_debug_log, "PVFM%s\n", tmpbuf);
3653 PerlIO_printf(Perl_debug_log, "PVIO%s\n", tmpbuf);
3656 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", tmpbuf);
3659 if (type >= SVt_PVIV || type == SVt_IV)
3660 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
3661 if (type >= SVt_PVNV || type == SVt_NV)
3662 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
3664 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
3670 if (type <= SVt_PVLV) {
3672 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
3673 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
3675 PerlIO_printf(Perl_debug_log, " PV = 0\n");
3677 if (type >= SVt_PVMG) {
3679 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
3682 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
3686 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
3687 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
3688 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
3689 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
3690 sv_dump(LvTARG(sv));
3693 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
3694 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
3695 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILL(sv));
3696 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
3697 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
3698 flags = AvFLAGS(sv);
3701 if (flags & AVf_REAL) strcat(d, "REAL,");
3702 if (flags & AVf_REIFY) strcat(d, "REIFY,");
3703 if (flags & AVf_REUSED) strcat(d, "REUSED,");
3705 d[strlen(d)-1] = '\0';
3706 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n", d);
3709 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
3710 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
3711 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
3712 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
3713 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
3714 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
3716 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
3718 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
3723 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
3724 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
3725 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
3726 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
3727 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
3728 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
3729 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
3730 if (CvGV(sv) && GvNAME(CvGV(sv))) {
3731 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
3733 PerlIO_printf(Perl_debug_log, "\n");
3735 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
3736 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
3737 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
3738 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
3739 if (type == SVt_PVFM)
3740 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
3743 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
3744 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
3745 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
3746 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
3747 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
3748 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
3749 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
3750 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
3751 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
3752 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
3753 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
3754 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
3755 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
3756 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
3757 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
3758 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
3759 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
3762 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
3763 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
3764 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
3765 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
3766 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
3767 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
3768 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
3769 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
3770 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
3771 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
3772 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
3773 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
3774 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
3775 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
3776 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
3777 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
3796 switch (SvTYPE(sv)) {
3804 croak("Bad filehandle: %s", GvNAME(gv));
3808 croak(no_usym, "filehandle");
3810 return sv_2io(SvRV(sv));
3811 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3817 croak("Bad filehandle: %s", SvPV(sv,na));