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 SV *new_sv _((void));
49 static XPVIV *new_xiv _((void));
50 static XPVNV *new_xnv _((void));
51 static XPV *new_xpv _((void));
52 static XRV *new_xrv _((void));
53 static void del_xiv _((XPVIV* p));
54 static void del_xnv _((XPVNV* p));
55 static void del_xpv _((XPV* p));
56 static void del_xrv _((XRV* p));
57 static void sv_mortalgrow _((void));
59 static void sv_unglob _((SV* sv));
63 #define new_SV() sv = (SV*)safemalloc(sizeof(SV))
64 #define del_SV(p) free((char*)p)
67 sv_add_arena(ptr, size, flags)
72 if (!(flags & SVf_FAKE))
81 sv_root = (SV*)SvANY(sv); \
93 sv_root = (SV*)SvANY(sv);
105 SvANY(p) = (void *)sv_root; \
106 SvFLAGS(p) = SVTYPEMASK; \
120 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
122 svend = &sva[SvREFCNT(sva)];
123 if (p >= sv && p < svend)
127 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
131 SvANY(p) = (void *) sv_root;
137 SvANY(p) = (void *)sv_root; \
144 sv_add_arena(ptr, size, flags)
152 Zero(sva, size, char);
154 /* The first SV in an arena isn't an SV. */
155 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
156 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
157 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
162 svend = &sva[SvREFCNT(sva) - 1];
165 SvANY(sv) = (void *)(SV*)(sv + 1);
166 SvFLAGS(sv) = SVTYPEMASK;
170 SvFLAGS(sv) = SVTYPEMASK;
177 sv_add_arena(nice_chunk, nice_chunk_size, 0);
181 char *chunk; /* must use New here to match call to */
182 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
183 sv_add_arena(chunk, 1008, 0);
196 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
198 svend = &sva[SvREFCNT(sva)];
200 if (SvTYPE(sv) != SVTYPEMASK) {
201 fprintf(stderr, "****\n");
217 #ifndef DISABLE_DESTRUCTOR_KLUDGE
219 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
221 svend = &sva[SvREFCNT(sva)];
222 while ((SV*)gv < svend) {
223 if (SvTYPE(gv) == SVt_PVGV && (sv = GvSV(gv)) &&
224 SvROK(sv) && SvOBJECT(rv = SvRV(sv)))
226 DEBUG_D((fprintf(stderr, "Cleaning object ref:\n "),
238 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
240 svend = &sva[SvREFCNT(sva)];
242 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
243 DEBUG_D((fprintf(stderr, "Cleaning object ref:\n "),
249 /* XXX Might want to check arrays, etc. */
255 static int in_clean_all = 0;
265 for (sva = sv_arenaroot; sva; sva = (SV*) SvANY(sva)) {
267 svend = &sva[SvREFCNT(sva)];
269 if (SvTYPE(sv) != SVTYPEMASK) {
270 DEBUG_D((fprintf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
271 SvFLAGS(sv) |= SVf_BREAK;
286 /* Free arenas here, but be careful about fake ones. (We assume
287 contiguity of the fake ones with the corresponding real ones.) */
289 for (sva = sv_arenaroot; sva; sva = svanext) {
290 svanext = (SV*) SvANY(sva);
291 while (svanext && SvFAKE(svanext))
292 svanext = (SV*) SvANY(svanext);
295 Safefree((void *)sva);
306 * See comment in more_xiv() -- RAM.
308 xiv_root = (IV**)*xiv;
309 return (XPVIV*)((char*)xiv - sizeof(XPV));
318 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
319 *xiv = (IV *)xiv_root;
327 register IV** xivend;
328 XPV* ptr = (XPV*)safemalloc(1008);
329 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
330 xiv_arenaroot = ptr; /* to keep Purify happy */
333 xivend = &xiv[1008 / sizeof(IV *) - 1];
334 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
336 while (xiv < xivend) {
337 *xiv = (IV *)(xiv + 1);
350 xnv_root = *(double**)xnv;
351 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
360 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
361 *(double**)xnv = xnv_root;
368 register double* xnv;
369 register double* xnvend;
370 xnv = (double*)safemalloc(1008);
371 xnvend = &xnv[1008 / sizeof(double) - 1];
372 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
374 while (xnv < xnvend) {
375 *(double**)xnv = (double*)(xnv + 1);
388 xrv_root = (XRV*)xrv->xrv_rv;
398 p->xrv_rv = (SV*)xrv_root;
406 register XRV* xrvend;
407 xrv_root = (XRV*)safemalloc(1008);
409 xrvend = &xrv[1008 / sizeof(XRV) - 1];
410 while (xrv < xrvend) {
411 xrv->xrv_rv = (SV*)(xrv + 1);
424 xpv_root = (XPV*)xpv->xpv_pv;
434 p->xpv_pv = (char*)xpv_root;
442 register XPV* xpvend;
443 xpv_root = (XPV*)safemalloc(1008);
445 xpvend = &xpv[1008 / sizeof(XPV) - 1];
446 while (xpv < xpvend) {
447 xpv->xpv_pv = (char*)(xpv + 1);
455 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
456 #define del_XIV(p) free((char*)p)
458 #define new_XIV() (void*)new_xiv()
459 #define del_XIV(p) del_xiv(p)
463 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
464 #define del_XNV(p) free((char*)p)
466 #define new_XNV() (void*)new_xnv()
467 #define del_XNV(p) del_xnv(p)
471 #define new_XRV() (void*)safemalloc(sizeof(XRV))
472 #define del_XRV(p) free((char*)p)
474 #define new_XRV() (void*)new_xrv()
475 #define del_XRV(p) del_xrv(p)
479 #define new_XPV() (void*)safemalloc(sizeof(XPV))
480 #define del_XPV(p) free((char*)p)
482 #define new_XPV() (void*)new_xpv()
483 #define del_XPV(p) del_xpv(p)
486 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
487 #define del_XPVIV(p) free((char*)p)
489 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
490 #define del_XPVNV(p) free((char*)p)
492 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
493 #define del_XPVMG(p) free((char*)p)
495 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
496 #define del_XPVLV(p) free((char*)p)
498 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
499 #define del_XPVAV(p) free((char*)p)
501 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
502 #define del_XPVHV(p) free((char*)p)
504 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
505 #define del_XPVCV(p) free((char*)p)
507 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
508 #define del_XPVGV(p) free((char*)p)
510 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
511 #define del_XPVBM(p) free((char*)p)
513 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
514 #define del_XPVFM(p) free((char*)p)
516 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
517 #define del_XPVIO(p) free((char*)p)
532 if (SvTYPE(sv) == mt)
538 switch (SvTYPE(sv)) {
553 nv = (double)SvIVX(sv);
559 else if (mt < SVt_PVIV)
576 pv = (char*)SvRV(sv);
580 nv = (double)(unsigned long)pv;
597 else if (mt == SVt_NV)
609 del_XPVIV(SvANY(sv));
620 del_XPVNV(SvANY(sv));
630 del_XPVMG(SvANY(sv));
633 croak("Can't upgrade that kind of scalar");
638 croak("Can't upgrade to undef");
640 SvANY(sv) = new_XIV();
644 SvANY(sv) = new_XNV();
648 SvANY(sv) = new_XRV();
652 SvANY(sv) = new_XPV();
658 SvANY(sv) = new_XPVIV();
668 SvANY(sv) = new_XPVNV();
676 SvANY(sv) = new_XPVMG();
686 SvANY(sv) = new_XPVLV();
700 SvANY(sv) = new_XPVAV();
715 SvANY(sv) = new_XPVHV();
731 SvANY(sv) = new_XPVCV();
732 Zero(SvANY(sv), 1, XPVCV);
742 SvANY(sv) = new_XPVGV();
757 SvANY(sv) = new_XPVBM();
770 SvANY(sv) = new_XPVFM();
771 Zero(SvANY(sv), 1, XPVFM);
781 SvANY(sv) = new_XPVIO();
782 Zero(SvANY(sv), 1, XPVIO);
793 SvFLAGS(sv) &= ~SVTYPEMASK;
811 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
815 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
816 if (sv == &sv_undef) {
817 strcpy(t, "SV_UNDEF");
818 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
819 SVs_GMG|SVs_SMG|SVs_RMG)) &&
823 else if (sv == &sv_no) {
825 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
826 SVs_GMG|SVs_SMG|SVs_RMG)) &&
827 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
835 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
836 SVs_GMG|SVs_SMG|SVs_RMG)) &&
837 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
840 SvPVX(sv) && *SvPVX(sv) == '1' &&
847 else if (SvREFCNT(sv) == 0) {
853 if (t - tokenbuf + unref > 10) {
854 strcpy(tokenbuf + unref + 3,"...");
860 switch (SvTYPE(sv)) {
900 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
923 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
925 sprintf(t,"(\"%.127s\")",SvPVX(sv));
928 sprintf(t,"(%g)",SvNVX(sv));
930 sprintf(t,"(%ld)",(long)SvIVX(sv));
952 SvLEN(sv) += SvIVX(sv);
953 SvPVX(sv) -= SvIVX(sv);
955 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
957 SvFLAGS(sv) &= ~SVf_OOK;
967 unsigned long newlen;
973 if (newlen >= 0x10000) {
974 fprintf(stderr, "Allocation too large: %lx\n", newlen);
980 if (SvTYPE(sv) < SVt_PV) {
981 sv_upgrade(sv, SVt_PV);
984 else if (SvOOK(sv)) { /* pv is offset? */
987 if (newlen > SvLEN(sv))
988 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
992 if (newlen > SvLEN(sv)) { /* need more room? */
994 Renew(s,newlen,char);
996 New(703,s,newlen,char);
998 SvLEN_set(sv, newlen);
1008 if (SvTHINKFIRST(sv)) {
1009 if (SvREADONLY(sv) && curcop != &compiling)
1014 switch (SvTYPE(sv)) {
1016 sv_upgrade(sv, SVt_IV);
1019 sv_upgrade(sv, SVt_PVNV);
1023 sv_upgrade(sv, SVt_PVIV);
1037 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1038 op_name[op->op_type]);
1040 (void)SvIOK_only(sv); /* validate number */
1050 if (SvTHINKFIRST(sv)) {
1051 if (SvREADONLY(sv) && curcop != &compiling)
1056 switch (SvTYPE(sv)) {
1059 sv_upgrade(sv, SVt_NV);
1065 sv_upgrade(sv, SVt_PVNV);
1072 (void)SvOOK_off(sv);
1085 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1086 op_name[op->op_type]);
1089 (void)SvNOK_only(sv); /* validate number */
1102 for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
1104 if (ch & 128 && !isprint(ch)) {
1124 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1125 op_name[op->op_type]);
1127 warn("Argument \"%s\" isn't numeric", tmpbuf);
1136 if (SvGMAGICAL(sv)) {
1141 if (SvNVX(sv) < 0.0)
1142 return I_V(SvNVX(sv));
1144 return (IV) U_V(SvNVX(sv));
1146 if (SvPOKp(sv) && SvLEN(sv)) {
1147 if (dowarn && !looks_like_number(sv))
1149 return (IV)atol(SvPVX(sv));
1155 if (SvTHINKFIRST(sv)) {
1159 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1160 return SvIV(tmpstr);
1161 #endif /* OVERLOAD */
1162 return (IV)SvRV(sv);
1164 if (SvREADONLY(sv)) {
1166 if (SvNVX(sv) < 0.0)
1167 return I_V(SvNVX(sv));
1169 return (IV) U_V(SvNVX(sv));
1171 if (SvPOKp(sv) && SvLEN(sv)) {
1172 if (dowarn && !looks_like_number(sv))
1174 return (IV)atol(SvPVX(sv));
1181 switch (SvTYPE(sv)) {
1183 sv_upgrade(sv, SVt_IV);
1186 sv_upgrade(sv, SVt_PVIV);
1189 sv_upgrade(sv, SVt_PVNV);
1194 if (SvNVX(sv) < 0.0)
1195 SvIVX(sv) = I_V(SvNVX(sv));
1197 SvIVX(sv) = (IV) U_V(SvNVX(sv));
1199 else if (SvPOKp(sv) && SvLEN(sv)) {
1200 if (dowarn && !looks_like_number(sv))
1203 SvIVX(sv) = (IV)atol(SvPVX(sv));
1206 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1211 DEBUG_c(fprintf(Perl_debug_log,"0x%lx 2iv(%ld)\n",
1212 (unsigned long)sv,(long)SvIVX(sv)));
1222 if (SvGMAGICAL(sv)) {
1226 if (SvPOKp(sv) && SvLEN(sv)) {
1227 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1229 return atof(SvPVX(sv));
1232 return (double)SvIVX(sv);
1237 if (SvTHINKFIRST(sv)) {
1241 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1242 return SvNV(tmpstr);
1243 #endif /* OVERLOAD */
1244 return (double)(unsigned long)SvRV(sv);
1246 if (SvREADONLY(sv)) {
1247 if (SvPOKp(sv) && SvLEN(sv)) {
1248 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1250 return atof(SvPVX(sv));
1253 return (double)SvIVX(sv);
1259 if (SvTYPE(sv) < SVt_NV) {
1260 if (SvTYPE(sv) == SVt_IV)
1261 sv_upgrade(sv, SVt_PVNV);
1263 sv_upgrade(sv, SVt_NV);
1264 DEBUG_c(fprintf(Perl_debug_log,"0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1266 else if (SvTYPE(sv) < SVt_PVNV)
1267 sv_upgrade(sv, SVt_PVNV);
1269 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1271 SvNVX(sv) = (double)SvIVX(sv);
1273 else if (SvPOKp(sv) && SvLEN(sv)) {
1274 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1276 SvNVX(sv) = atof(SvPVX(sv));
1279 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1284 DEBUG_c(fprintf(Perl_debug_log,"0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1300 if (SvGMAGICAL(sv)) {
1307 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1311 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1319 if (SvTHINKFIRST(sv)) {
1323 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1324 return SvPV(tmpstr,*lp);
1325 #endif /* OVERLOAD */
1330 switch (SvTYPE(sv)) {
1339 case SVt_PVMG: s = "SCALAR"; break;
1340 case SVt_PVLV: s = "LVALUE"; break;
1341 case SVt_PVAV: s = "ARRAY"; break;
1342 case SVt_PVHV: s = "HASH"; break;
1343 case SVt_PVCV: s = "CODE"; break;
1344 case SVt_PVGV: s = "GLOB"; break;
1345 case SVt_PVFM: s = "FORMATLINE"; break;
1346 case SVt_PVIO: s = "FILEHANDLE"; break;
1347 default: s = "UNKNOWN"; break;
1350 sprintf(tokenbuf, "%s=%s(0x%lx)",
1351 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1353 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1359 if (SvREADONLY(sv)) {
1361 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1365 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1374 if (!SvUPGRADE(sv, SVt_PV))
1377 if (SvTYPE(sv) < SVt_PVNV)
1378 sv_upgrade(sv, SVt_PVNV);
1381 olderrno = errno; /* some Xenix systems wipe out errno here */
1383 if (SvNVX(sv) == 0.0)
1384 (void)strcpy(s,"0");
1387 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1389 #ifdef FIXNEGATIVEZERO
1390 if (*s == '-' && s[1] == '0' && !s[2])
1399 else if (SvIOKp(sv)) {
1400 if (SvTYPE(sv) < SVt_PVIV)
1401 sv_upgrade(sv, SVt_PVIV);
1404 olderrno = errno; /* some Xenix systems wipe out errno here */
1405 (void)sprintf(s,"%ld",(long)SvIVX(sv));
1410 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1416 *lp = s - SvPVX(sv);
1419 DEBUG_c(fprintf(Perl_debug_log,"0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1423 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1424 /* Sneaky stuff here */
1427 sv = sv_newmortal();
1428 *lp = strlen(tokenbuf);
1429 sv_setpvn(sv, tokenbuf, *lp);
1435 #ifdef FIXNEGATIVEZERO
1436 if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
1437 strcpy(tokenbuf,"0");
1439 (void)SvUPGRADE(sv, SVt_PV);
1440 len = *lp = strlen(tokenbuf);
1441 s = SvGROW(sv, len + 1);
1443 (void)strcpy(s, tokenbuf);
1444 /* NO SvPOK_on(sv) here! */
1449 /* This function is only called on magical items */
1463 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1464 return SvTRUE(tmpsv);
1466 #endif /* OVERLOAD */
1467 return SvRV(sv) != 0;
1471 if ((Xpv = (XPV*)SvANY(sv)) &&
1472 (*Xpv->xpv_pv > '0' ||
1474 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1481 return SvIVX(sv) != 0;
1484 return SvNVX(sv) != 0.0;
1491 /* Note: sv_setsv() should not be called with a source string that needs
1492 * to be reused, since it may destroy the source string if it is marked
1501 register U32 sflags;
1507 if (SvTHINKFIRST(dstr)) {
1508 if (SvREADONLY(dstr) && curcop != &compiling)
1515 stype = SvTYPE(sstr);
1516 dtype = SvTYPE(dstr);
1518 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1519 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1520 sv_setpvn(dstr, "", 0);
1521 (void)SvPOK_only(dstr);
1522 dtype = SvTYPE(dstr);
1527 #endif /* OVERLOAD */
1528 /* There's a lot of redundancy below but we're going for speed here */
1532 (void)SvOK_off(dstr);
1535 if (dtype <= SVt_PV) {
1537 sv_upgrade(dstr, SVt_IV);
1538 else if (dtype == SVt_NV)
1539 sv_upgrade(dstr, SVt_PVNV);
1540 else if (dtype <= SVt_PV)
1541 sv_upgrade(dstr, SVt_PVIV);
1545 if (dtype <= SVt_PVIV) {
1547 sv_upgrade(dstr, SVt_NV);
1548 else if (dtype == SVt_PVIV)
1549 sv_upgrade(dstr, SVt_PVNV);
1550 else if (dtype <= SVt_PV)
1551 sv_upgrade(dstr, SVt_PVNV);
1556 sv_upgrade(dstr, SVt_RV);
1557 else if (dtype == SVt_PVGV &&
1558 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1561 if (curcop->cop_stash != GvSTASH(dstr))
1562 GvIMPORTED_on(dstr);
1571 sv_upgrade(dstr, SVt_PV);
1574 if (dtype < SVt_PVIV)
1575 sv_upgrade(dstr, SVt_PVIV);
1578 if (dtype < SVt_PVNV)
1579 sv_upgrade(dstr, SVt_PVNV);
1583 sv_upgrade(dstr, SVt_PVNV);
1591 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1592 op_name[op->op_type]);
1594 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1598 if (dtype <= SVt_PVGV) {
1600 if (dtype != SVt_PVGV) {
1601 char *name = GvNAME(sstr);
1602 STRLEN len = GvNAMELEN(sstr);
1603 sv_upgrade(dstr, SVt_PVGV);
1604 sv_magic(dstr, dstr, '*', name, len);
1605 GvSTASH(dstr) = GvSTASH(sstr);
1606 GvNAME(dstr) = savepvn(name, len);
1607 GvNAMELEN(dstr) = len;
1608 SvFAKE_on(dstr); /* can coerce to non-glob */
1610 (void)SvOK_off(dstr);
1611 GvINTRO_off(dstr); /* one-shot flag */
1613 GvGP(dstr) = gp_ref(GvGP(sstr));
1615 if (curcop->cop_stash != GvSTASH(dstr))
1616 GvIMPORTED_on(dstr);
1624 sv_upgrade(dstr, stype);
1625 if (SvGMAGICAL(sstr))
1629 sflags = SvFLAGS(sstr);
1631 if (sflags & SVf_ROK) {
1632 if (dtype >= SVt_PV) {
1633 if (dtype == SVt_PVGV) {
1634 SV *sref = SvREFCNT_inc(SvRV(sstr));
1636 int intro = GvINTRO(dstr);
1640 GvGP(dstr)->gp_refcnt--;
1641 GvINTRO_off(dstr); /* one-shot flag */
1642 Newz(602,gp, 1, GP);
1645 GvSV(dstr) = NEWSV(72,0);
1646 GvLINE(dstr) = curcop->cop_line;
1647 GvEGV(dstr) = (GV*)dstr;
1650 switch (SvTYPE(sref)) {
1653 SAVESPTR(GvAV(dstr));
1655 dref = (SV*)GvAV(dstr);
1656 GvAV(dstr) = (AV*)sref;
1657 if (curcop->cop_stash != GvSTASH(dstr))
1658 GvIMPORTED_AV_on(dstr);
1662 SAVESPTR(GvHV(dstr));
1664 dref = (SV*)GvHV(dstr);
1665 GvHV(dstr) = (HV*)sref;
1666 if (curcop->cop_stash != GvSTASH(dstr))
1667 GvIMPORTED_HV_on(dstr);
1671 SAVESPTR(GvCV(dstr));
1673 CV* cv = GvCV(dstr);
1676 if (dowarn && sref != dref &&
1677 !GvCVGEN((GV*)dstr) &&
1678 (CvROOT(cv) || CvXSUB(cv)) )
1679 warn("Subroutine %s redefined",
1680 GvENAME((GV*)dstr));
1684 if (GvCV(dstr) != (CV*)sref) {
1685 GvCV(dstr) = (CV*)sref;
1686 GvASSUMECV_on(dstr);
1688 if (curcop->cop_stash != GvSTASH(dstr))
1689 GvIMPORTED_CV_on(dstr);
1693 SAVESPTR(GvIOp(dstr));
1695 dref = (SV*)GvIOp(dstr);
1696 GvIOp(dstr) = (IO*)sref;
1700 SAVESPTR(GvSV(dstr));
1702 dref = (SV*)GvSV(dstr);
1704 if (curcop->cop_stash != GvSTASH(dstr))
1705 GvIMPORTED_SV_on(dstr);
1716 Safefree(SvPVX(dstr));
1717 SvLEN(dstr)=SvCUR(dstr)=0;
1720 (void)SvOK_off(dstr);
1721 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1723 if (sflags & SVp_NOK) {
1725 SvNVX(dstr) = SvNVX(sstr);
1727 if (sflags & SVp_IOK) {
1728 (void)SvIOK_on(dstr);
1729 SvIVX(dstr) = SvIVX(sstr);
1732 if (SvAMAGIC(sstr)) {
1735 #endif /* OVERLOAD */
1737 else if (sflags & SVp_POK) {
1740 * Check to see if we can just swipe the string. If so, it's a
1741 * possible small lose on short strings, but a big win on long ones.
1742 * It might even be a win on short strings if SvPVX(dstr)
1743 * has to be allocated and SvPVX(sstr) has to be freed.
1746 if (SvTEMP(sstr) && /* slated for free anyway? */
1747 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
1749 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
1751 SvFLAGS(dstr) &= ~SVf_OOK;
1752 Safefree(SvPVX(dstr) - SvIVX(dstr));
1755 Safefree(SvPVX(dstr));
1757 (void)SvPOK_only(dstr);
1758 SvPV_set(dstr, SvPVX(sstr));
1759 SvLEN_set(dstr, SvLEN(sstr));
1760 SvCUR_set(dstr, SvCUR(sstr));
1762 (void)SvOK_off(sstr);
1763 SvPV_set(sstr, Nullch);
1768 else { /* have to copy actual string */
1769 STRLEN len = SvCUR(sstr);
1771 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1772 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1773 SvCUR_set(dstr, len);
1774 *SvEND(dstr) = '\0';
1775 (void)SvPOK_only(dstr);
1778 if (sflags & SVp_NOK) {
1780 SvNVX(dstr) = SvNVX(sstr);
1782 if (sflags & SVp_IOK) {
1783 (void)SvIOK_on(dstr);
1784 SvIVX(dstr) = SvIVX(sstr);
1787 else if (sflags & SVp_NOK) {
1788 SvNVX(dstr) = SvNVX(sstr);
1789 (void)SvNOK_only(dstr);
1791 (void)SvIOK_on(dstr);
1792 SvIVX(dstr) = SvIVX(sstr);
1795 else if (sflags & SVp_IOK) {
1796 (void)SvIOK_only(dstr);
1797 SvIVX(dstr) = SvIVX(sstr);
1800 (void)SvOK_off(dstr);
1806 sv_setpvn(sv,ptr,len)
1809 register STRLEN len;
1812 if (SvTHINKFIRST(sv)) {
1813 if (SvREADONLY(sv) && curcop != &compiling)
1822 if (SvTYPE(sv) >= SVt_PV) {
1823 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1826 else if (!sv_upgrade(sv, SVt_PV))
1828 SvGROW(sv, len + 1);
1829 Move(ptr,SvPVX(sv),len,char);
1832 (void)SvPOK_only(sv); /* validate pointer */
1841 register STRLEN len;
1843 if (SvTHINKFIRST(sv)) {
1844 if (SvREADONLY(sv) && curcop != &compiling)
1854 if (SvTYPE(sv) >= SVt_PV) {
1855 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1858 else if (!sv_upgrade(sv, SVt_PV))
1860 SvGROW(sv, len + 1);
1861 Move(ptr,SvPVX(sv),len+1,char);
1863 (void)SvPOK_only(sv); /* validate pointer */
1868 sv_usepvn(sv,ptr,len)
1871 register STRLEN len;
1873 if (SvTHINKFIRST(sv)) {
1874 if (SvREADONLY(sv) && curcop != &compiling)
1879 if (!SvUPGRADE(sv, SVt_PV))
1886 Safefree(SvPVX(sv));
1887 Renew(ptr, len+1, char);
1890 SvLEN_set(sv, len+1);
1892 (void)SvPOK_only(sv); /* validate pointer */
1897 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1901 register STRLEN delta;
1903 if (!ptr || !SvPOKp(sv))
1905 if (SvTHINKFIRST(sv)) {
1906 if (SvREADONLY(sv) && curcop != &compiling)
1911 if (SvTYPE(sv) < SVt_PVIV)
1912 sv_upgrade(sv,SVt_PVIV);
1916 SvFLAGS(sv) |= SVf_OOK;
1918 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1919 delta = ptr - SvPVX(sv);
1927 sv_catpvn(sv,ptr,len)
1930 register STRLEN len;
1935 junk = SvPV_force(sv, tlen);
1936 SvGROW(sv, tlen + len + 1);
1939 Move(ptr,SvPVX(sv)+tlen,len,char);
1942 (void)SvPOK_only(sv); /* validate pointer */
1955 if (s = SvPV(sstr, len))
1956 sv_catpvn(dstr,s,len);
1964 register STRLEN len;
1970 junk = SvPV_force(sv, tlen);
1972 SvGROW(sv, tlen + len + 1);
1975 Move(ptr,SvPVX(sv)+tlen,len+1,char);
1977 (void)SvPOK_only(sv); /* validate pointer */
1997 sv_upgrade(sv, SVt_PV);
1998 SvGROW(sv, len + 1);
2003 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2006 sv_magic(sv, obj, how, name, namlen)
2015 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", how))
2017 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2018 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2025 if (!SvUPGRADE(sv, SVt_PVMG))
2028 Newz(702,mg, 1, MAGIC);
2029 mg->mg_moremagic = SvMAGIC(sv);
2032 if (!obj || obj == sv || how == '#')
2035 mg->mg_obj = SvREFCNT_inc(obj);
2036 mg->mg_flags |= MGf_REFCOUNTED;
2039 mg->mg_len = namlen;
2042 mg->mg_ptr = savepvn(name, namlen);
2043 else if (namlen == HEf_SVKEY)
2044 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2048 mg->mg_virtual = &vtbl_sv;
2052 mg->mg_virtual = &vtbl_amagic;
2055 mg->mg_virtual = &vtbl_amagicelem;
2060 #endif /* OVERLOAD */
2062 mg->mg_virtual = &vtbl_bm;
2065 mg->mg_virtual = &vtbl_env;
2068 mg->mg_virtual = &vtbl_envelem;
2071 mg->mg_virtual = &vtbl_mglob;
2074 mg->mg_virtual = &vtbl_isa;
2077 mg->mg_virtual = &vtbl_isaelem;
2084 mg->mg_virtual = &vtbl_dbline;
2087 mg->mg_virtual = &vtbl_pack;
2091 mg->mg_virtual = &vtbl_packelem;
2094 mg->mg_virtual = &vtbl_sig;
2097 mg->mg_virtual = &vtbl_sigelem;
2100 mg->mg_virtual = &vtbl_taint;
2104 mg->mg_virtual = &vtbl_uvar;
2107 mg->mg_virtual = &vtbl_vec;
2110 mg->mg_virtual = &vtbl_substr;
2113 mg->mg_virtual = &vtbl_glob;
2116 mg->mg_virtual = &vtbl_arylen;
2119 mg->mg_virtual = &vtbl_pos;
2121 case '~': /* Reserved for use by extensions not perl internals. */
2122 /* Useful for attaching extension internal data to perl vars. */
2123 /* Note that multiple extensions may clash if magical scalars */
2124 /* etc holding private data from one are passed to another. */
2128 croak("Don't know how to handle magic of type '%c'", how);
2132 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2136 sv_unmagic(sv, type)
2142 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2145 for (mg = *mgp; mg; mg = *mgp) {
2146 if (mg->mg_type == type) {
2147 MGVTBL* vtbl = mg->mg_virtual;
2148 *mgp = mg->mg_moremagic;
2149 if (vtbl && vtbl->svt_free)
2150 (*vtbl->svt_free)(sv, mg);
2151 if (mg->mg_ptr && mg->mg_type != 'g')
2152 if (mg->mg_len >= 0)
2153 Safefree(mg->mg_ptr);
2154 else if (mg->mg_len == HEf_SVKEY)
2155 SvREFCNT_dec((SV*)mg->mg_ptr);
2156 if (mg->mg_flags & MGf_REFCOUNTED)
2157 SvREFCNT_dec(mg->mg_obj);
2161 mgp = &mg->mg_moremagic;
2165 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2172 sv_insert(bigstr,offset,len,little,littlelen)
2181 register char *midend;
2182 register char *bigend;
2186 croak("Can't modify non-existent substring");
2187 SvPV_force(bigstr, na);
2189 i = littlelen - len;
2190 if (i > 0) { /* string might grow */
2191 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2192 mid = big + offset + len;
2193 midend = bigend = big + SvCUR(bigstr);
2196 while (midend > mid) /* shove everything down */
2197 *--bigend = *--midend;
2198 Move(little,big+offset,littlelen,char);
2204 Move(little,SvPVX(bigstr)+offset,len,char);
2209 big = SvPVX(bigstr);
2212 bigend = big + SvCUR(bigstr);
2214 if (midend > bigend)
2215 croak("panic: sv_insert");
2217 if (mid - big > bigend - midend) { /* faster to shorten from end */
2219 Move(little, mid, littlelen,char);
2222 i = bigend - midend;
2224 Move(midend, mid, i,char);
2228 SvCUR_set(bigstr, mid - big);
2231 else if (i = mid - big) { /* faster from front */
2232 midend -= littlelen;
2234 sv_chop(bigstr,midend-i);
2239 Move(little, mid, littlelen,char);
2241 else if (littlelen) {
2242 midend -= littlelen;
2243 sv_chop(bigstr,midend);
2244 Move(little,midend,littlelen,char);
2247 sv_chop(bigstr,midend);
2252 /* make sv point to what nstr did */
2259 U32 refcnt = SvREFCNT(sv);
2260 if (SvTHINKFIRST(sv)) {
2261 if (SvREADONLY(sv) && curcop != &compiling)
2266 if (SvREFCNT(nsv) != 1)
2267 warn("Reference miscount in sv_replace()");
2268 if (SvMAGICAL(sv)) {
2272 sv_upgrade(nsv, SVt_PVMG);
2273 SvMAGIC(nsv) = SvMAGIC(sv);
2274 SvFLAGS(nsv) |= SvMAGICAL(sv);
2280 StructCopy(nsv,sv,SV);
2281 SvREFCNT(sv) = refcnt;
2282 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2291 assert(SvREFCNT(sv) == 0);
2297 if (defstash) { /* Still have a symbol table? */
2298 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2301 SAVEFREESV(SvSTASH(sv));
2302 if (destructor && GvCV(destructor)) {
2306 sv_upgrade(&ref, SVt_RV);
2307 SvRV(&ref) = SvREFCNT_inc(sv);
2314 perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
2315 del_XRV(SvANY(&ref));
2321 SvREFCNT_dec(SvSTASH(sv));
2323 SvOBJECT_off(sv); /* Curse the object. */
2324 if (SvTYPE(sv) != SVt_PVIO)
2325 --sv_objcount; /* XXX Might want something more general */
2330 && (ret = perl_get_sv("DB::ret", FALSE))
2331 && SvROK(ret) && SvRV(ret) == sv && SvREFCNT(sv) == 1) {
2332 /* Debugger is prone to dangling references. */
2337 croak("panic: dangling references in DESTROY");
2341 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2343 switch (SvTYPE(sv)) {
2346 Safefree(IoTOP_NAME(sv));
2347 Safefree(IoFMT_NAME(sv));
2348 Safefree(IoBOTTOM_NAME(sv));
2364 Safefree(GvNAME(sv));
2371 (void)SvOOK_off(sv);
2376 SvREFCNT_dec(SvRV(sv));
2377 else if (SvPVX(sv) && SvLEN(sv))
2378 Safefree(SvPVX(sv));
2388 switch (SvTYPE(sv)) {
2404 del_XPVIV(SvANY(sv));
2407 del_XPVNV(SvANY(sv));
2410 del_XPVMG(SvANY(sv));
2413 del_XPVLV(SvANY(sv));
2416 del_XPVAV(SvANY(sv));
2419 del_XPVHV(SvANY(sv));
2422 del_XPVCV(SvANY(sv));
2425 del_XPVGV(SvANY(sv));
2428 del_XPVBM(SvANY(sv));
2431 del_XPVFM(SvANY(sv));
2434 del_XPVIO(SvANY(sv));
2437 SvFLAGS(sv) &= SVf_BREAK;
2438 SvFLAGS(sv) |= SVTYPEMASK;
2456 if (SvREADONLY(sv)) {
2457 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2460 if (SvREFCNT(sv) == 0) {
2461 if (SvFLAGS(sv) & SVf_BREAK)
2463 if (in_clean_all) /* All is fair */
2465 warn("Attempt to free unreferenced scalar");
2468 if (--SvREFCNT(sv) > 0)
2472 warn("Attempt to free temp prematurely");
2493 junk = SvPV(sv, len);
2512 pv1 = SvPV(str1, cur1);
2517 pv2 = SvPV(str2, cur2);
2522 return !bcmp(pv1, pv2, cur1);
2541 pv1 = SvPV(str1, cur1);
2548 pv2 = SvPV(str2, cur2);
2551 return cur2 ? -1 : 0;
2557 if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
2558 return retval < 0 ? -1 : 1;
2563 else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
2564 return retval < 0 ? -1 : 1;
2565 else if (cur1 == cur2)
2572 sv_gets(sv,fp,append)
2579 register STDCHAR rslast;
2580 register STDCHAR *bp;
2586 * We're going to steal some values from the stdio struct
2587 * and put EVERYTHING in the innermost loop into registers.
2589 register STDCHAR *ptr;
2594 if (SvTHINKFIRST(sv)) {
2595 if (SvREADONLY(sv) && curcop != &compiling)
2600 if (!SvUPGRADE(sv, SVt_PV))
2607 else if (RsPARA(rs)) {
2612 rsptr = SvPV(rs, rslen);
2613 rslast = rslen ? rsptr[rslen - 1] : '\0';
2615 if (RsPARA(rs)) { /* have to do this both before and after */
2616 do { /* to make sure file boundaries work right */
2631 /* Here is some breathtakingly efficient cheating */
2633 cnt = FILE_cnt(fp); /* get count into register */
2634 (void)SvPOK_only(sv); /* validate pointer */
2635 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2636 if (cnt > 80 && SvLEN(sv) > append) {
2637 shortbuffered = cnt - SvLEN(sv) + append + 1;
2638 cnt -= shortbuffered;
2642 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2647 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
2653 while (--cnt >= 0) { /* this | eat */
2654 if ((*bp++ = *ptr++) == rslast) /* really | dust */
2655 goto thats_all_folks; /* screams | sed :-) */
2659 memcpy((char*)bp, (char*)ptr, cnt); /* this | eat */
2660 bp += cnt; /* screams | dust */
2661 ptr += cnt; /* louder | sed :-) */
2666 if (shortbuffered) { /* oh well, must extend */
2667 cnt = shortbuffered;
2669 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2671 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2672 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2676 FILE_cnt(fp) = cnt; /* deregisterize cnt and ptr */
2678 #if defined(__Lynx__)
2679 i = _fillbuf(fp); /* get more characters */
2681 i = _filbuf(fp); /* get more characters */
2684 ptr = FILE_ptr(fp); /* reregisterize cnt and ptr */
2686 if (i == EOF) /* all done for ever? */
2687 goto thats_really_all_folks;
2689 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2691 SvGROW(sv, bpx + cnt + 2);
2692 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2694 *bp++ = i; /* store character from _filbuf */
2696 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
2697 goto thats_all_folks;
2701 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
2702 bcmp((char*)bp - rslen, rsptr, rslen))
2703 goto screamer; /* go back to the fray */
2704 thats_really_all_folks:
2706 cnt += shortbuffered;
2707 FILE_cnt(fp) = cnt; /* put these back or we're in trouble */
2710 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
2712 #else /* SV_FAST_GETS */
2714 /*The big, slow, and stupid way */
2721 if (rslast == '\n') {
2722 i = fgets(buf,sizeof buf,fp) == NULL ? EOF : *buf;
2723 cnt = i == EOF ? 0 : strlen(buf);
2726 register STDCHAR *bpe = buf + sizeof(buf);
2728 while ((i = getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
2729 ; /* keep reading */
2734 cnt = fread((char*)buf, 1, sizeof(buf), fp);
2735 i = cnt ? !EOF : EOF;
2739 sv_catpvn(sv, buf, cnt);
2741 sv_setpvn(sv, buf, cnt);
2743 if (i != EOF && /* joy */
2745 SvCUR(sv) < rslen ||
2746 bcmp(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
2753 #endif /* SV_FAST_GETS */
2755 if (RsPARA(rs)) { /* have to do this both before and after */
2756 while (i != EOF) { /* to make sure file boundaries work right */
2765 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
2777 if (SvTHINKFIRST(sv)) {
2778 if (SvREADONLY(sv) && curcop != &compiling)
2782 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
2783 #endif /* OVERLOAD */
2789 flags = SvFLAGS(sv);
2790 if (flags & SVp_IOK) {
2791 (void)SvIOK_only(sv);
2795 if (flags & SVp_NOK) {
2797 (void)SvNOK_only(sv);
2800 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2801 if ((flags & SVTYPEMASK) < SVt_PVNV)
2802 sv_upgrade(sv, SVt_NV);
2804 (void)SvNOK_only(sv);
2808 while (isALPHA(*d)) d++;
2809 while (isDIGIT(*d)) d++;
2811 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2815 while (d >= SvPVX(sv)) {
2825 *(d--) -= 'z' - 'a' + 1;
2828 /* oh,oh, the number grew */
2829 SvGROW(sv, SvCUR(sv) + 2);
2831 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2847 if (SvTHINKFIRST(sv)) {
2848 if (SvREADONLY(sv) && curcop != &compiling)
2852 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
2853 #endif /* OVERLOAD */
2859 flags = SvFLAGS(sv);
2860 if (flags & SVp_IOK) {
2861 (void)SvIOK_only(sv);
2865 if (flags & SVp_NOK) {
2867 (void)SvNOK_only(sv);
2870 if (!(flags & SVp_POK)) {
2871 if ((flags & SVTYPEMASK) < SVt_PVNV)
2872 sv_upgrade(sv, SVt_NV);
2874 (void)SvNOK_only(sv);
2877 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2880 /* Make a string that will exist for the duration of the expression
2881 * evaluation. Actually, it may have to last longer than that, but
2882 * hopefully we won't free it until it has been assigned to a
2883 * permanent location. */
2889 Renew(tmps_stack, tmps_max, SV*);
2893 sv_mortalcopy(oldstr)
2902 sv_setsv(sv,oldstr);
2903 if (++tmps_ix >= tmps_max)
2905 tmps_stack[tmps_ix] = sv;
2918 SvFLAGS(sv) = SVs_TEMP;
2919 if (++tmps_ix >= tmps_max)
2921 tmps_stack[tmps_ix] = sv;
2925 /* same thing without the copying */
2933 if (SvREADONLY(sv) && curcop != &compiling)
2935 if (++tmps_ix >= tmps_max)
2937 tmps_stack[tmps_ix] = sv;
2955 sv_setpvn(sv,s,len);
2997 sv_upgrade(sv, SVt_RV);
2999 SvRV(sv) = SvREFCNT_inc(ref);
3004 /* make an exact duplicate of old */
3014 if (SvTYPE(old) == SVTYPEMASK) {
3015 warn("semi-panic: attempt to dup freed string");
3045 if (!*s) { /* reset ?? searches */
3046 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3047 pm->op_pmflags &= ~PMf_USED;
3052 /* reset variables */
3054 if (!HvARRAY(stash))
3057 Zero(todo, 256, char);
3064 for ( ; i <= max; i++) {
3067 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3068 for (entry = HvARRAY(stash)[i];
3070 entry = HeNEXT(entry)) {
3071 if (!todo[(U8)*HeKEY(entry)])
3073 gv = (GV*)HeVAL(entry);
3076 if (SvTYPE(sv) >= SVt_PV) {
3079 if (SvPVX(sv) != Nullch)
3086 if (HvNAME(GvHV(gv)))
3089 #ifndef VMS /* VMS has no environ array */
3091 environ[0] = Nullch;
3100 sv_2cv(sv, st, gvp, lref)
3110 return *gvp = Nullgv, Nullcv;
3111 switch (SvTYPE(sv)) {
3131 if (SvTYPE(cv) != SVt_PVCV)
3132 croak("Not a subroutine reference");
3140 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3146 if (lref && !GvCV(gv)) {
3149 tmpsv = NEWSV(704,0);
3150 gv_efullname(tmpsv, gv);
3151 newSUB(start_subparse(),
3152 newSVOP(OP_CONST, 0, tmpsv),
3157 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3174 if ((Xpv = (XPV*)SvANY(sv)) &&
3175 (*Xpv->xpv_pv > '0' ||
3177 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3184 return SvIVX(sv) != 0;
3187 return SvNVX(sv) != 0.0;
3189 return sv_2bool(sv);
3213 return (double)SvIVX(Sv);
3228 return sv_2pv(sv, lp);
3233 sv_pvn_force(sv, lp)
3239 if (SvREADONLY(sv) && curcop != &compiling)
3246 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3247 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3253 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3254 op_name[op->op_type]);
3258 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3263 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3264 SvGROW(sv, len + 1);
3265 Move(s,SvPVX(sv),len,char);
3270 SvPOK_on(sv); /* validate pointer */
3272 DEBUG_c(fprintf(Perl_debug_log,"0x%lx 2pv(%s)\n",
3273 (unsigned long)sv,SvPVX(sv)));
3284 if (ob && SvOBJECT(sv))
3285 return HvNAME(SvSTASH(sv));
3287 switch (SvTYPE(sv)) {
3301 case SVt_PVLV: return "LVALUE";
3302 case SVt_PVAV: return "ARRAY";
3303 case SVt_PVHV: return "HASH";
3304 case SVt_PVCV: return "CODE";
3305 case SVt_PVGV: return "GLOB";
3306 case SVt_PVFM: return "FORMLINE";
3307 default: return "UNKNOWN";
3335 return strEQ(HvNAME(SvSTASH(sv)), name);
3339 newSVrv(rv, classname)
3349 sv_upgrade(rv, SVt_RV);
3350 SvRV(rv) = SvREFCNT_inc(sv);
3354 HV* stash = gv_stashpv(classname, TRUE);
3355 (void)sv_bless(rv, stash);
3361 sv_setref_pv(rv, classname, pv)
3367 sv_setsv(rv, &sv_undef);
3369 sv_setiv(newSVrv(rv,classname), (IV)pv);
3374 sv_setref_iv(rv, classname, iv)
3379 sv_setiv(newSVrv(rv,classname), iv);
3384 sv_setref_nv(rv, classname, nv)
3389 sv_setnv(newSVrv(rv,classname), nv);
3394 sv_setref_pvn(rv, classname, pv, n)
3400 sv_setpvn(newSVrv(rv,classname), pv, n);
3411 croak("Can't bless non-reference value");
3413 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3414 if (SvREADONLY(ref))
3416 if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
3421 (void)SvUPGRADE(ref, SVt_PVMG);
3422 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3426 if (Gv_AMG(stash)) {
3429 #endif /* OVERLOAD */
3438 assert(SvTYPE(sv) == SVt_PVGV);
3442 sv_unmagic(sv, '*');
3443 Safefree(GvNAME(sv));
3445 SvFLAGS(sv) &= ~SVTYPEMASK;
3446 SvFLAGS(sv) |= SVt_PVMG;
3457 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3460 sv_2mortal(rv); /* Schedule for freeing later */
3474 fprintf(Perl_debug_log, "SV = 0\n");
3478 flags = SvFLAGS(sv);
3481 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
3482 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
3484 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
3485 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
3486 if (flags & SVs_PADMY) strcat(d, "PADMY,");
3487 if (flags & SVs_TEMP) strcat(d, "TEMP,");
3488 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
3489 if (flags & SVs_GMG) strcat(d, "GMG,");
3490 if (flags & SVs_SMG) strcat(d, "SMG,");
3491 if (flags & SVs_RMG) strcat(d, "RMG,");
3494 if (flags & SVf_IOK) strcat(d, "IOK,");
3495 if (flags & SVf_NOK) strcat(d, "NOK,");
3496 if (flags & SVf_POK) strcat(d, "POK,");
3497 if (flags & SVf_ROK) strcat(d, "ROK,");
3498 if (flags & SVf_OOK) strcat(d, "OOK,");
3499 if (flags & SVf_FAKE) strcat(d, "FAKE,");
3500 if (flags & SVf_READONLY) strcat(d, "READONLY,");
3504 if (flags & SVf_AMAGIC) strcat(d, "OVERLOAD,");
3505 #endif /* OVERLOAD */
3506 if (flags & SVp_IOK) strcat(d, "pIOK,");
3507 if (flags & SVp_NOK) strcat(d, "pNOK,");
3508 if (flags & SVp_POK) strcat(d, "pPOK,");
3509 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
3513 if (CvANON(sv)) strcat(d, "ANON,");
3514 if (CvCLONE(sv)) strcat(d, "CLONE,");
3515 if (CvCLONED(sv)) strcat(d, "CLONED,");
3518 if (GvMULTI(sv)) strcat(d, "MULTI,");
3520 if (flags & SVpgv_AM) strcat(d, "withOVERLOAD,");
3521 #endif /* OVERLOAD */
3530 fprintf(Perl_debug_log, "SV = ");
3533 fprintf(Perl_debug_log,"NULL%s\n", tmpbuf);
3536 fprintf(Perl_debug_log,"IV%s\n", tmpbuf);
3539 fprintf(Perl_debug_log,"NV%s\n", tmpbuf);
3542 fprintf(Perl_debug_log,"RV%s\n", tmpbuf);
3545 fprintf(Perl_debug_log,"PV%s\n", tmpbuf);
3548 fprintf(Perl_debug_log,"PVIV%s\n", tmpbuf);
3551 fprintf(Perl_debug_log,"PVNV%s\n", tmpbuf);
3554 fprintf(Perl_debug_log,"PVBM%s\n", tmpbuf);
3557 fprintf(Perl_debug_log,"PVMG%s\n", tmpbuf);
3560 fprintf(Perl_debug_log,"PVLV%s\n", tmpbuf);
3563 fprintf(Perl_debug_log,"PVAV%s\n", tmpbuf);
3566 fprintf(Perl_debug_log,"PVHV%s\n", tmpbuf);
3569 fprintf(Perl_debug_log,"PVCV%s\n", tmpbuf);
3572 fprintf(Perl_debug_log,"PVGV%s\n", tmpbuf);
3575 fprintf(Perl_debug_log,"PVFM%s\n", tmpbuf);
3578 fprintf(Perl_debug_log,"PVIO%s\n", tmpbuf);
3581 fprintf(Perl_debug_log,"UNKNOWN%s\n", tmpbuf);
3584 if (type >= SVt_PVIV || type == SVt_IV)
3585 fprintf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
3586 if (type >= SVt_PVNV || type == SVt_NV)
3587 fprintf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
3589 fprintf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
3595 if (type <= SVt_PVLV) {
3597 fprintf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
3598 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
3600 fprintf(Perl_debug_log, " PV = 0\n");
3602 if (type >= SVt_PVMG) {
3604 fprintf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
3607 fprintf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
3611 fprintf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
3612 fprintf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
3613 fprintf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
3614 fprintf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
3615 sv_dump(LvTARG(sv));
3618 fprintf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
3619 fprintf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
3620 fprintf(Perl_debug_log, " FILL = %ld\n", (long)AvFILL(sv));
3621 fprintf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
3622 fprintf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
3623 flags = AvFLAGS(sv);
3626 if (flags & AVf_REAL) strcat(d, "REAL,");
3627 if (flags & AVf_REIFY) strcat(d, "REIFY,");
3628 if (flags & AVf_REUSED) strcat(d, "REUSED,");
3630 d[strlen(d)-1] = '\0';
3631 fprintf(Perl_debug_log, " FLAGS = (%s)\n", d);
3634 fprintf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
3635 fprintf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
3636 fprintf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
3637 fprintf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
3638 fprintf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
3639 fprintf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
3641 fprintf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
3643 fprintf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
3648 fprintf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
3649 fprintf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
3650 fprintf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
3651 fprintf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
3652 fprintf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
3653 fprintf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
3654 fprintf(stderr, " GV = 0x%lx", (long)CvGV(sv));
3655 if (CvGV(sv) && GvNAME(CvGV(sv))) {
3656 fprintf(stderr, " \"%s\"\n", GvNAME(CvGV(sv)));
3658 fprintf(stderr, "\n");
3660 fprintf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
3661 fprintf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
3662 fprintf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
3663 fprintf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
3664 if (type == SVt_PVFM)
3665 fprintf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
3668 fprintf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
3669 fprintf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
3670 fprintf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
3671 fprintf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
3672 fprintf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
3673 fprintf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
3674 fprintf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
3675 fprintf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
3676 fprintf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
3677 fprintf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
3678 fprintf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
3679 fprintf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
3680 fprintf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
3681 fprintf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
3682 fprintf(Perl_debug_log, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
3683 fprintf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
3684 fprintf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
3687 fprintf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
3688 fprintf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
3689 fprintf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
3690 fprintf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
3691 fprintf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
3692 fprintf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
3693 fprintf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
3694 fprintf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
3695 fprintf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
3696 fprintf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
3697 fprintf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
3698 fprintf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
3699 fprintf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
3700 fprintf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
3701 fprintf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
3702 fprintf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
3721 switch (SvTYPE(sv)) {
3729 croak("Bad filehandle: %s", GvNAME(gv));
3733 croak(no_usym, "filehandle");
3735 return sv_2io(SvRV(sv));
3736 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3742 croak("Bad filehandle: %s", SvPV(sv,na));