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)
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))
80 MUTEX_LOCK(&sv_mutex); \
83 sv_root = (SV*)SvANY(sv); \
88 MUTEX_UNLOCK(&sv_mutex); \
97 sv_root = (SV*)SvANY(sv);
109 SvANY(p) = (void *)sv_root; \
123 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
125 svend = &sva[SvREFCNT(sva)];
126 if (p >= sv && p < svend)
130 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
134 SvANY(p) = (void *) sv_root;
140 SvANY(p) = (void *)sv_root; \
147 sv_add_arena(ptr, size, flags)
155 Zero(sva, size, char);
157 /* The first SV in an arena isn't an SV. */
158 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
159 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
160 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
165 svend = &sva[SvREFCNT(sva) - 1];
168 SvANY(sv) = (void *)(SV*)(sv + 1);
169 SvFLAGS(sv) = SVTYPEMASK;
173 SvFLAGS(sv) = SVTYPEMASK;
180 sv_add_arena(nice_chunk, nice_chunk_size, 0);
184 sv_add_arena(safemalloc(1008), 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)];
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. */
262 for (sva = sv_arenaroot; sva; sva = (SV*) SvANY(sva)) {
264 svend = &sva[SvREFCNT(sva)];
266 if (SvTYPE(sv) != SVTYPEMASK) {
267 DEBUG_D((fprintf(stderr, "Cleaning loops:\n "), sv_dump(sv));)
268 SvFLAGS(sv) |= SVf_BREAK;
282 /* Free arenas here, but be careful about fake ones. (We assume
283 contiguity of the fake ones with the corresponding real ones.) */
285 for (sva = sv_arenaroot; sva; sva = svanext) {
286 svanext = (SV*) SvANY(sva);
287 while (svanext && SvFAKE(svanext))
288 svanext = (SV*) SvANY(svanext);
302 * See comment in more_xiv() -- RAM.
304 xiv_root = (IV**)*xiv;
305 return (XPVIV*)((char*)xiv - sizeof(XPV));
314 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
315 *xiv = (IV *)xiv_root;
323 register IV** xivend;
324 XPV* ptr = (XPV*)safemalloc(1008);
325 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
326 xiv_arenaroot = ptr; /* to keep Purify happy */
329 xivend = &xiv[1008 / sizeof(IV *) - 1];
330 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
332 while (xiv < xivend) {
333 *xiv = (IV *)(xiv + 1);
346 xnv_root = *(double**)xnv;
347 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
356 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
357 *(double**)xnv = xnv_root;
364 register double* xnv;
365 register double* xnvend;
366 xnv = (double*)safemalloc(1008);
367 xnvend = &xnv[1008 / sizeof(double) - 1];
368 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
370 while (xnv < xnvend) {
371 *(double**)xnv = (double*)(xnv + 1);
384 xrv_root = (XRV*)xrv->xrv_rv;
394 p->xrv_rv = (SV*)xrv_root;
402 register XRV* xrvend;
403 xrv_root = (XRV*)safemalloc(1008);
405 xrvend = &xrv[1008 / sizeof(XRV) - 1];
406 while (xrv < xrvend) {
407 xrv->xrv_rv = (SV*)(xrv + 1);
420 xpv_root = (XPV*)xpv->xpv_pv;
430 p->xpv_pv = (char*)xpv_root;
438 register XPV* xpvend;
439 xpv_root = (XPV*)safemalloc(1008);
441 xpvend = &xpv[1008 / sizeof(XPV) - 1];
442 while (xpv < xpvend) {
443 xpv->xpv_pv = (char*)(xpv + 1);
451 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
452 #define del_XIV(p) free((char*)p)
454 #define new_XIV() (void*)new_xiv()
455 #define del_XIV(p) del_xiv(p)
459 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
460 #define del_XNV(p) free((char*)p)
462 #define new_XNV() (void*)new_xnv()
463 #define del_XNV(p) del_xnv(p)
467 #define new_XRV() (void*)safemalloc(sizeof(XRV))
468 #define del_XRV(p) free((char*)p)
470 #define new_XRV() (void*)new_xrv()
471 #define del_XRV(p) del_xrv(p)
475 #define new_XPV() (void*)safemalloc(sizeof(XPV))
476 #define del_XPV(p) free((char*)p)
478 #define new_XPV() (void*)new_xpv()
479 #define del_XPV(p) del_xpv(p)
482 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
483 #define del_XPVIV(p) free((char*)p)
485 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
486 #define del_XPVNV(p) free((char*)p)
488 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
489 #define del_XPVMG(p) free((char*)p)
491 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
492 #define del_XPVLV(p) free((char*)p)
494 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
495 #define del_XPVAV(p) free((char*)p)
497 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
498 #define del_XPVHV(p) free((char*)p)
500 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
501 #define del_XPVCV(p) free((char*)p)
503 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
504 #define del_XPVGV(p) free((char*)p)
506 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
507 #define del_XPVBM(p) free((char*)p)
509 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
510 #define del_XPVFM(p) free((char*)p)
512 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
513 #define del_XPVIO(p) free((char*)p)
528 if (SvTYPE(sv) == mt)
534 switch (SvTYPE(sv)) {
549 nv = (double)SvIVX(sv);
555 else if (mt < SVt_PVIV)
572 pv = (char*)SvRV(sv);
576 nv = (double)(unsigned long)pv;
593 else if (mt == SVt_NV)
605 del_XPVIV(SvANY(sv));
616 del_XPVNV(SvANY(sv));
626 del_XPVMG(SvANY(sv));
629 croak("Can't upgrade that kind of scalar");
634 croak("Can't upgrade to undef");
636 SvANY(sv) = new_XIV();
640 SvANY(sv) = new_XNV();
644 SvANY(sv) = new_XRV();
648 SvANY(sv) = new_XPV();
654 SvANY(sv) = new_XPVIV();
664 SvANY(sv) = new_XPVNV();
672 SvANY(sv) = new_XPVMG();
682 SvANY(sv) = new_XPVLV();
696 SvANY(sv) = new_XPVAV();
711 SvANY(sv) = new_XPVHV();
727 SvANY(sv) = new_XPVCV();
728 Zero(SvANY(sv), 1, XPVCV);
738 SvANY(sv) = new_XPVGV();
753 SvANY(sv) = new_XPVBM();
766 SvANY(sv) = new_XPVFM();
767 Zero(SvANY(sv), 1, XPVFM);
777 SvANY(sv) = new_XPVIO();
778 Zero(SvANY(sv), 1, XPVIO);
789 SvFLAGS(sv) &= ~SVTYPEMASK;
807 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
811 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
812 if (sv == &sv_undef) {
813 strcpy(t, "SV_UNDEF");
814 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
815 SVs_GMG|SVs_SMG|SVs_RMG)) &&
819 else if (sv == &sv_no) {
821 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
822 SVs_GMG|SVs_SMG|SVs_RMG)) &&
823 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
831 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
832 SVs_GMG|SVs_SMG|SVs_RMG)) &&
833 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
836 SvPVX(sv) && *SvPVX(sv) == '1' &&
843 else if (SvREFCNT(sv) == 0) {
849 if (t - tokenbuf + unref > 10) {
850 strcpy(tokenbuf + unref + 3,"...");
856 switch (SvTYPE(sv)) {
896 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
919 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
921 sprintf(t,"(\"%.127s\")",SvPVX(sv));
924 sprintf(t,"(%g)",SvNVX(sv));
926 sprintf(t,"(%ld)",(long)SvIVX(sv));
948 SvLEN(sv) += SvIVX(sv);
949 SvPVX(sv) -= SvIVX(sv);
951 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
953 SvFLAGS(sv) &= ~SVf_OOK;
963 unsigned long newlen;
969 if (newlen >= 0x10000) {
970 fprintf(stderr, "Allocation too large: %lx\n", newlen);
976 if (SvTYPE(sv) < SVt_PV) {
977 sv_upgrade(sv, SVt_PV);
980 else if (SvOOK(sv)) { /* pv is offset? */
983 if (newlen > SvLEN(sv))
984 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
988 if (newlen > SvLEN(sv)) { /* need more room? */
990 Renew(s,newlen,char);
992 New(703,s,newlen,char);
994 SvLEN_set(sv, newlen);
1004 if (SvTHINKFIRST(sv)) {
1005 if (SvREADONLY(sv) && curcop != &compiling)
1010 switch (SvTYPE(sv)) {
1012 sv_upgrade(sv, SVt_IV);
1015 sv_upgrade(sv, SVt_PVNV);
1019 sv_upgrade(sv, SVt_PVIV);
1035 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1036 op_name[op->op_type]);
1039 (void)SvIOK_only(sv); /* validate number */
1049 if (SvTHINKFIRST(sv)) {
1050 if (SvREADONLY(sv) && curcop != &compiling)
1055 switch (SvTYPE(sv)) {
1058 sv_upgrade(sv, SVt_NV);
1064 sv_upgrade(sv, SVt_PVNV);
1071 (void)SvOOK_off(sv);
1086 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1087 op_name[op->op_type]);
1091 (void)SvNOK_only(sv); /* validate number */
1105 for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
1107 if (ch & 128 && !isprint(ch)) {
1127 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1128 op_name[op->op_type]);
1130 warn("Argument \"%s\" isn't numeric", tmpbuf);
1139 if (SvGMAGICAL(sv)) {
1144 if (SvNVX(sv) < 0.0)
1145 return I_V(SvNVX(sv));
1147 return (IV) U_V(SvNVX(sv));
1149 if (SvPOKp(sv) && SvLEN(sv)) {
1150 if (dowarn && !looks_like_number(sv))
1152 return (IV)atol(SvPVX(sv));
1158 if (SvTHINKFIRST(sv)) {
1162 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1163 return SvIV(tmpstr);
1164 #endif /* OVERLOAD */
1165 return (IV)SvRV(sv);
1167 if (SvREADONLY(sv)) {
1169 if (SvNVX(sv) < 0.0)
1170 return I_V(SvNVX(sv));
1172 return (IV) U_V(SvNVX(sv));
1174 if (SvPOKp(sv) && SvLEN(sv)) {
1175 if (dowarn && !looks_like_number(sv))
1177 return (IV)atol(SvPVX(sv));
1184 switch (SvTYPE(sv)) {
1186 sv_upgrade(sv, SVt_IV);
1189 sv_upgrade(sv, SVt_PVIV);
1192 sv_upgrade(sv, SVt_PVNV);
1197 if (SvNVX(sv) < 0.0)
1198 SvIVX(sv) = I_V(SvNVX(sv));
1200 SvIVX(sv) = (IV) U_V(SvNVX(sv));
1202 else if (SvPOKp(sv) && SvLEN(sv)) {
1203 if (dowarn && !looks_like_number(sv))
1206 SvIVX(sv) = (IV)atol(SvPVX(sv));
1210 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1214 DEBUG_c(fprintf(stderr,"0x%lx 2iv(%ld)\n",
1215 (unsigned long)sv,(long)SvIVX(sv)));
1225 if (SvGMAGICAL(sv)) {
1229 if (SvPOKp(sv) && SvLEN(sv)) {
1230 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1232 return atof(SvPVX(sv));
1235 return (double)SvIVX(sv);
1240 if (SvTHINKFIRST(sv)) {
1244 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1245 return SvNV(tmpstr);
1246 #endif /* OVERLOAD */
1247 return (double)(unsigned long)SvRV(sv);
1249 if (SvREADONLY(sv)) {
1250 if (SvPOKp(sv) && SvLEN(sv)) {
1251 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1253 return atof(SvPVX(sv));
1256 return (double)SvIVX(sv);
1262 if (SvTYPE(sv) < SVt_NV) {
1263 if (SvTYPE(sv) == SVt_IV)
1264 sv_upgrade(sv, SVt_PVNV);
1266 sv_upgrade(sv, SVt_NV);
1267 DEBUG_c(fprintf(stderr,"0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1269 else if (SvTYPE(sv) < SVt_PVNV)
1270 sv_upgrade(sv, SVt_PVNV);
1272 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1274 SvNVX(sv) = (double)SvIVX(sv);
1276 else if (SvPOKp(sv) && SvLEN(sv)) {
1277 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1279 SvNVX(sv) = atof(SvPVX(sv));
1283 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1288 DEBUG_c(fprintf(stderr,"0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1304 if (SvGMAGICAL(sv)) {
1311 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1315 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1323 if (SvTHINKFIRST(sv)) {
1327 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1328 return SvPV(tmpstr,*lp);
1329 #endif /* OVERLOAD */
1334 switch (SvTYPE(sv)) {
1343 case SVt_PVMG: s = "SCALAR"; break;
1344 case SVt_PVLV: s = "LVALUE"; break;
1345 case SVt_PVAV: s = "ARRAY"; break;
1346 case SVt_PVHV: s = "HASH"; break;
1347 case SVt_PVCV: s = "CODE"; break;
1348 case SVt_PVGV: s = "GLOB"; break;
1349 case SVt_PVFM: s = "FORMATLINE"; break;
1350 case SVt_PVIO: s = "FILEHANDLE"; break;
1351 default: s = "UNKNOWN"; break;
1354 sprintf(tokenbuf, "%s=%s(0x%lx)",
1355 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1357 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1363 if (SvREADONLY(sv)) {
1365 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1369 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1378 if (!SvUPGRADE(sv, SVt_PV))
1381 if (SvTYPE(sv) < SVt_PVNV)
1382 sv_upgrade(sv, SVt_PVNV);
1385 olderrno = errno; /* some Xenix systems wipe out errno here */
1387 if (SvNVX(sv) == 0.0)
1388 (void)strcpy(s,"0");
1391 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1393 #ifdef FIXNEGATIVEZERO
1394 if (*s == '-' && s[1] == '0' && !s[2])
1403 else if (SvIOKp(sv)) {
1404 if (SvTYPE(sv) < SVt_PVIV)
1405 sv_upgrade(sv, SVt_PVIV);
1408 olderrno = errno; /* some Xenix systems wipe out errno here */
1409 (void)sprintf(s,"%ld",(long)SvIVX(sv));
1415 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1421 *lp = s - SvPVX(sv);
1424 DEBUG_c(fprintf(stderr,"0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1428 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1429 /* Sneaky stuff here */
1432 sv = sv_newmortal();
1433 *lp = strlen(tokenbuf);
1434 sv_setpvn(sv, tokenbuf, *lp);
1440 #ifdef FIXNEGATIVEZERO
1441 if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
1442 strcpy(tokenbuf,"0");
1444 (void)SvUPGRADE(sv, SVt_PV);
1445 len = *lp = strlen(tokenbuf);
1446 s = SvGROW(sv, len + 1);
1448 (void)strcpy(s, tokenbuf);
1449 /* NO SvPOK_on(sv) here! */
1454 /* This function is only called on magical items */
1469 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1470 return SvTRUE(tmpsv);
1472 #endif /* OVERLOAD */
1473 return SvRV(sv) != 0;
1476 register XPV* Xpvtmp;
1477 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
1478 (*Xpvtmp->xpv_pv > '0' ||
1479 Xpvtmp->xpv_cur > 1 ||
1480 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
1487 return SvIVX(sv) != 0;
1490 return SvNVX(sv) != 0.0;
1497 /* Note: sv_setsv() should not be called with a source string that needs
1498 * to be reused, since it may destroy the source string if it is marked
1508 register U32 sflags;
1514 if (SvTHINKFIRST(dstr)) {
1515 if (SvREADONLY(dstr) && curcop != &compiling)
1522 stype = SvTYPE(sstr);
1523 dtype = SvTYPE(dstr);
1525 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1526 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1527 sv_setpvn(dstr, "", 0);
1528 (void)SvPOK_only(dstr);
1529 dtype = SvTYPE(dstr);
1534 #endif /* OVERLOAD */
1535 /* There's a lot of redundancy below but we're going for speed here */
1539 (void)SvOK_off(dstr);
1542 if (dtype <= SVt_PV) {
1544 sv_upgrade(dstr, SVt_IV);
1545 else if (dtype == SVt_NV)
1546 sv_upgrade(dstr, SVt_PVNV);
1547 else if (dtype <= SVt_PV)
1548 sv_upgrade(dstr, SVt_PVIV);
1552 if (dtype <= SVt_PVIV) {
1554 sv_upgrade(dstr, SVt_NV);
1555 else if (dtype == SVt_PVIV)
1556 sv_upgrade(dstr, SVt_PVNV);
1557 else if (dtype <= SVt_PV)
1558 sv_upgrade(dstr, SVt_PVNV);
1563 sv_upgrade(dstr, SVt_RV);
1564 else if (dtype == SVt_PVGV &&
1565 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1568 if (curcop->cop_stash != GvSTASH(dstr))
1569 GvIMPORTED_on(dstr);
1578 sv_upgrade(dstr, SVt_PV);
1581 if (dtype < SVt_PVIV)
1582 sv_upgrade(dstr, SVt_PVIV);
1585 if (dtype < SVt_PVNV)
1586 sv_upgrade(dstr, SVt_PVNV);
1590 sv_upgrade(dstr, SVt_PVNV);
1598 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1599 op_name[op->op_type]);
1601 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1605 if (dtype <= SVt_PVGV) {
1607 if (dtype != SVt_PVGV) {
1608 char *name = GvNAME(sstr);
1609 STRLEN len = GvNAMELEN(sstr);
1610 sv_upgrade(dstr, SVt_PVGV);
1611 sv_magic(dstr, dstr, '*', name, len);
1612 GvSTASH(dstr) = GvSTASH(sstr);
1613 GvNAME(dstr) = savepvn(name, len);
1614 GvNAMELEN(dstr) = len;
1615 SvFAKE_on(dstr); /* can coerce to non-glob */
1617 (void)SvOK_off(dstr);
1618 GvINTRO_off(dstr); /* one-shot flag */
1620 GvGP(dstr) = gp_ref(GvGP(sstr));
1622 if (curcop->cop_stash != GvSTASH(dstr))
1623 GvIMPORTED_on(dstr);
1631 sv_upgrade(dstr, stype);
1632 if (SvGMAGICAL(sstr))
1636 sflags = SvFLAGS(sstr);
1638 if (sflags & SVf_ROK) {
1639 if (dtype >= SVt_PV) {
1640 if (dtype == SVt_PVGV) {
1642 SV *sref = SvREFCNT_inc(SvRV(sstr));
1644 int intro = GvINTRO(dstr);
1648 GvGP(dstr)->gp_refcnt--;
1649 GvINTRO_off(dstr); /* one-shot flag */
1650 Newz(602,gp, 1, GP);
1653 GvSV(dstr) = NEWSV(72,0);
1654 GvLINE(dstr) = curcop->cop_line;
1658 switch (SvTYPE(sref)) {
1661 SAVESPTR(GvAV(dstr));
1663 dref = (SV*)GvAV(dstr);
1664 GvAV(dstr) = (AV*)sref;
1665 if (curcop->cop_stash != GvSTASH(dstr))
1666 GvIMPORTED_AV_on(dstr);
1670 SAVESPTR(GvHV(dstr));
1672 dref = (SV*)GvHV(dstr);
1673 GvHV(dstr) = (HV*)sref;
1674 if (curcop->cop_stash != GvSTASH(dstr))
1675 GvIMPORTED_HV_on(dstr);
1679 SAVESPTR(GvCV(dstr));
1681 CV* cv = GvCV(dstr);
1684 if (dowarn && sref != dref &&
1685 !GvCVGEN((GV*)dstr) &&
1686 (CvROOT(cv) || CvXSUB(cv)) )
1687 warn("Subroutine %s redefined",
1688 GvENAME((GV*)dstr));
1692 if (GvCV(dstr) != (CV*)sref) {
1693 GvCV(dstr) = (CV*)sref;
1694 GvASSUMECV_on(dstr);
1696 if (curcop->cop_stash != GvSTASH(dstr))
1697 GvIMPORTED_CV_on(dstr);
1701 SAVESPTR(GvIOp(dstr));
1703 dref = (SV*)GvIOp(dstr);
1704 GvIOp(dstr) = (IO*)sref;
1708 SAVESPTR(GvSV(dstr));
1710 dref = (SV*)GvSV(dstr);
1712 if (curcop->cop_stash != GvSTASH(dstr))
1713 GvIMPORTED_SV_on(dstr);
1724 Safefree(SvPVX(dstr));
1725 SvLEN(dstr)=SvCUR(dstr)=0;
1728 (void)SvOK_off(dstr);
1729 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1731 if (sflags & SVp_NOK) {
1733 SvNVX(dstr) = SvNVX(sstr);
1735 if (sflags & SVp_IOK) {
1736 (void)SvIOK_on(dstr);
1737 SvIVX(dstr) = SvIVX(sstr);
1740 if (SvAMAGIC(sstr)) {
1743 #endif /* OVERLOAD */
1745 else if (sflags & SVp_POK) {
1748 * Check to see if we can just swipe the string. If so, it's a
1749 * possible small lose on short strings, but a big win on long ones.
1750 * It might even be a win on short strings if SvPVX(dstr)
1751 * has to be allocated and SvPVX(sstr) has to be freed.
1754 if (SvTEMP(sstr) && /* slated for free anyway? */
1755 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
1757 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
1759 SvFLAGS(dstr) &= ~SVf_OOK;
1760 Safefree(SvPVX(dstr) - SvIVX(dstr));
1763 Safefree(SvPVX(dstr));
1765 (void)SvPOK_only(dstr);
1766 SvPV_set(dstr, SvPVX(sstr));
1767 SvLEN_set(dstr, SvLEN(sstr));
1768 SvCUR_set(dstr, SvCUR(sstr));
1770 (void)SvOK_off(sstr);
1771 SvPV_set(sstr, Nullch);
1776 else { /* have to copy actual string */
1777 STRLEN len = SvCUR(sstr);
1779 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1780 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1781 SvCUR_set(dstr, len);
1782 *SvEND(dstr) = '\0';
1783 (void)SvPOK_only(dstr);
1786 if (sflags & SVp_NOK) {
1788 SvNVX(dstr) = SvNVX(sstr);
1790 if (sflags & SVp_IOK) {
1791 (void)SvIOK_on(dstr);
1792 SvIVX(dstr) = SvIVX(sstr);
1795 else if (sflags & SVp_NOK) {
1796 SvNVX(dstr) = SvNVX(sstr);
1797 (void)SvNOK_only(dstr);
1799 (void)SvIOK_on(dstr);
1800 SvIVX(dstr) = SvIVX(sstr);
1803 else if (sflags & SVp_IOK) {
1804 (void)SvIOK_only(dstr);
1805 SvIVX(dstr) = SvIVX(sstr);
1808 (void)SvOK_off(dstr);
1814 sv_setpvn(sv,ptr,len)
1817 register STRLEN len;
1820 if (SvTHINKFIRST(sv)) {
1821 if (SvREADONLY(sv) && curcop != &compiling)
1830 if (SvTYPE(sv) >= SVt_PV) {
1831 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1834 else if (!sv_upgrade(sv, SVt_PV))
1836 SvGROW(sv, len + 1);
1837 Move(ptr,SvPVX(sv),len,char);
1840 (void)SvPOK_only(sv); /* validate pointer */
1849 register STRLEN len;
1851 if (SvTHINKFIRST(sv)) {
1852 if (SvREADONLY(sv) && curcop != &compiling)
1862 if (SvTYPE(sv) >= SVt_PV) {
1863 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1866 else if (!sv_upgrade(sv, SVt_PV))
1868 SvGROW(sv, len + 1);
1869 Move(ptr,SvPVX(sv),len+1,char);
1871 (void)SvPOK_only(sv); /* validate pointer */
1876 sv_usepvn(sv,ptr,len)
1879 register STRLEN len;
1881 if (SvTHINKFIRST(sv)) {
1882 if (SvREADONLY(sv) && curcop != &compiling)
1887 if (!SvUPGRADE(sv, SVt_PV))
1894 Safefree(SvPVX(sv));
1895 Renew(ptr, len+1, char);
1898 SvLEN_set(sv, len+1);
1900 (void)SvPOK_only(sv); /* validate pointer */
1905 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1909 register STRLEN delta;
1911 if (!ptr || !SvPOKp(sv))
1913 if (SvTHINKFIRST(sv)) {
1914 if (SvREADONLY(sv) && curcop != &compiling)
1919 if (SvTYPE(sv) < SVt_PVIV)
1920 sv_upgrade(sv,SVt_PVIV);
1924 SvFLAGS(sv) |= SVf_OOK;
1926 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1927 delta = ptr - SvPVX(sv);
1935 sv_catpvn(sv,ptr,len)
1938 register STRLEN len;
1943 junk = SvPV_force(sv, tlen);
1944 SvGROW(sv, tlen + len + 1);
1947 Move(ptr,SvPVX(sv)+tlen,len,char);
1950 (void)SvPOK_only(sv); /* validate pointer */
1963 if (s = SvPV(sstr, len))
1964 sv_catpvn(dstr,s,len);
1972 register STRLEN len;
1978 junk = SvPV_force(sv, tlen);
1980 SvGROW(sv, tlen + len + 1);
1983 Move(ptr,SvPVX(sv)+tlen,len+1,char);
1985 (void)SvPOK_only(sv); /* validate pointer */
2005 sv_upgrade(sv, SVt_PV);
2006 SvGROW(sv, len + 1);
2012 sv_magic(sv, obj, how, name, namlen)
2021 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", how))
2023 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2024 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2031 if (!SvUPGRADE(sv, SVt_PVMG))
2034 Newz(702,mg, 1, MAGIC);
2035 mg->mg_moremagic = SvMAGIC(sv);
2038 if (!obj || obj == sv || how == '#')
2042 mg->mg_obj = SvREFCNT_inc(obj);
2043 mg->mg_flags |= MGf_REFCOUNTED;
2046 mg->mg_len = namlen;
2047 if (name && namlen >= 0)
2048 mg->mg_ptr = savepvn(name, namlen);
2051 mg->mg_virtual = &vtbl_sv;
2055 mg->mg_virtual = &vtbl_amagic;
2058 mg->mg_virtual = &vtbl_amagicelem;
2063 #endif /* OVERLOAD */
2065 mg->mg_virtual = &vtbl_bm;
2068 mg->mg_virtual = &vtbl_env;
2071 mg->mg_virtual = &vtbl_envelem;
2074 mg->mg_virtual = &vtbl_mglob;
2077 mg->mg_virtual = &vtbl_isa;
2080 mg->mg_virtual = &vtbl_isaelem;
2087 mg->mg_virtual = &vtbl_dbline;
2091 mg->mg_virtual = &vtbl_mutex;
2093 #endif /* USE_THREADS */
2095 mg->mg_virtual = &vtbl_pack;
2099 mg->mg_virtual = &vtbl_packelem;
2102 mg->mg_virtual = &vtbl_sig;
2105 mg->mg_virtual = &vtbl_sigelem;
2108 mg->mg_virtual = &vtbl_taint;
2112 mg->mg_virtual = &vtbl_uvar;
2115 mg->mg_virtual = &vtbl_vec;
2118 mg->mg_virtual = &vtbl_substr;
2121 mg->mg_virtual = &vtbl_glob;
2124 mg->mg_virtual = &vtbl_arylen;
2127 mg->mg_virtual = &vtbl_pos;
2129 case '~': /* Reserved for use by extensions not perl internals. */
2130 /* Useful for attaching extension internal data to perl vars. */
2131 /* Note that multiple extensions may clash if magical scalars */
2132 /* etc holding private data from one are passed to another. */
2136 croak("Don't know how to handle magic of type '%c'", how);
2140 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2144 sv_unmagic(sv, type)
2150 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2153 for (mg = *mgp; mg; mg = *mgp) {
2154 if (mg->mg_type == type) {
2155 MGVTBL* vtbl = mg->mg_virtual;
2156 *mgp = mg->mg_moremagic;
2157 if (vtbl && vtbl->svt_free)
2158 (*vtbl->svt_free)(sv, mg);
2159 if (mg->mg_ptr && mg->mg_type != 'g')
2160 Safefree(mg->mg_ptr);
2161 if (mg->mg_flags & MGf_REFCOUNTED)
2162 SvREFCNT_dec(mg->mg_obj);
2166 mgp = &mg->mg_moremagic;
2170 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2177 sv_insert(bigstr,offset,len,little,littlelen)
2186 register char *midend;
2187 register char *bigend;
2191 croak("Can't modify non-existent substring");
2192 SvPV_force(bigstr, na);
2194 i = littlelen - len;
2195 if (i > 0) { /* string might grow */
2196 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2197 mid = big + offset + len;
2198 midend = bigend = big + SvCUR(bigstr);
2201 while (midend > mid) /* shove everything down */
2202 *--bigend = *--midend;
2203 Move(little,big+offset,littlelen,char);
2209 Move(little,SvPVX(bigstr)+offset,len,char);
2214 big = SvPVX(bigstr);
2217 bigend = big + SvCUR(bigstr);
2219 if (midend > bigend)
2220 croak("panic: sv_insert");
2222 if (mid - big > bigend - midend) { /* faster to shorten from end */
2224 Move(little, mid, littlelen,char);
2227 i = bigend - midend;
2229 Move(midend, mid, i,char);
2233 SvCUR_set(bigstr, mid - big);
2236 else if (i = mid - big) { /* faster from front */
2237 midend -= littlelen;
2239 sv_chop(bigstr,midend-i);
2244 Move(little, mid, littlelen,char);
2246 else if (littlelen) {
2247 midend -= littlelen;
2248 sv_chop(bigstr,midend);
2249 Move(little,midend,littlelen,char);
2252 sv_chop(bigstr,midend);
2257 /* make sv point to what nstr did */
2264 U32 refcnt = SvREFCNT(sv);
2265 if (SvTHINKFIRST(sv)) {
2266 if (SvREADONLY(sv) && curcop != &compiling)
2271 if (SvREFCNT(nsv) != 1)
2272 warn("Reference miscount in sv_replace()");
2273 if (SvMAGICAL(sv)) {
2277 sv_upgrade(nsv, SVt_PVMG);
2278 SvMAGIC(nsv) = SvMAGIC(sv);
2279 SvFLAGS(nsv) |= SvMAGICAL(sv);
2285 StructCopy(nsv,sv,SV);
2286 SvREFCNT(sv) = refcnt;
2295 assert(SvREFCNT(sv) == 0);
2302 if (defstash) { /* Still have a symbol table? */
2303 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2306 SAVEFREESV(SvSTASH(sv));
2307 if (destructor && GvCV(destructor)) {
2312 sv_upgrade(&ref, SVt_RV);
2313 SAVEI32(SvREFCNT(sv));
2314 SvRV(&ref) = SvREFCNT_inc(sv);
2321 perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
2322 del_XRV(SvANY(&ref));
2327 SvREFCNT_dec(SvSTASH(sv));
2329 SvOBJECT_off(sv); /* Curse the object. */
2330 if (SvTYPE(sv) != SVt_PVIO)
2331 --sv_objcount; /* XXX Might want something more general */
2334 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2336 switch (SvTYPE(sv)) {
2339 Safefree(IoTOP_NAME(sv));
2340 Safefree(IoFMT_NAME(sv));
2341 Safefree(IoBOTTOM_NAME(sv));
2357 Safefree(GvNAME(sv));
2364 (void)SvOOK_off(sv);
2369 SvREFCNT_dec(SvRV(sv));
2371 Safefree(SvPVX(sv));
2381 switch (SvTYPE(sv)) {
2397 del_XPVIV(SvANY(sv));
2400 del_XPVNV(SvANY(sv));
2403 del_XPVMG(SvANY(sv));
2406 del_XPVLV(SvANY(sv));
2409 del_XPVAV(SvANY(sv));
2412 del_XPVHV(SvANY(sv));
2415 del_XPVCV(SvANY(sv));
2418 del_XPVGV(SvANY(sv));
2421 del_XPVBM(SvANY(sv));
2424 del_XPVFM(SvANY(sv));
2427 del_XPVIO(SvANY(sv));
2430 SvFLAGS(sv) &= SVf_BREAK;
2431 SvFLAGS(sv) |= SVTYPEMASK;
2449 if (SvREADONLY(sv)) {
2450 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2453 if (SvREFCNT(sv) == 0) {
2454 if (SvFLAGS(sv) & SVf_BREAK)
2456 warn("Attempt to free unreferenced scalar");
2459 if (--SvREFCNT(sv) > 0)
2463 warn("Attempt to free temp prematurely");
2484 junk = SvPV(sv, len);
2503 pv1 = SvPV(str1, cur1);
2508 pv2 = SvPV(str2, cur2);
2513 return !bcmp(pv1, pv2, cur1);
2532 pv1 = SvPV(str1, cur1);
2539 pv2 = SvPV(str2, cur2);
2542 return cur2 ? -1 : 0;
2548 if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
2549 return retval < 0 ? -1 : 1;
2554 else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
2555 return retval < 0 ? -1 : 1;
2556 else if (cur1 == cur2)
2563 sv_gets(sv,fp,append)
2570 register STDCHAR rslast;
2571 register STDCHAR *bp;
2577 * We're going to steal some values from the stdio struct
2578 * and put EVERYTHING in the innermost loop into registers.
2580 register STDCHAR *ptr;
2585 if (SvTHINKFIRST(sv)) {
2586 if (SvREADONLY(sv) && curcop != &compiling)
2591 if (!SvUPGRADE(sv, SVt_PV))
2598 else if (RsPARA(rs)) {
2603 rsptr = SvPV(rs, rslen);
2604 rslast = rslen ? rsptr[rslen - 1] : '\0';
2606 if (RsPARA(rs)) { /* have to do this both before and after */
2607 do { /* to make sure file boundaries work right */
2622 /* Here is some breathtakingly efficient cheating */
2624 cnt = FILE_cnt(fp); /* get count into register */
2625 (void)SvPOK_only(sv); /* validate pointer */
2626 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2627 if (cnt > 80 && SvLEN(sv) > append) {
2628 shortbuffered = cnt - SvLEN(sv) + append + 1;
2629 cnt -= shortbuffered;
2633 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2638 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
2644 while (--cnt >= 0) { /* this | eat */
2645 if ((*bp++ = *ptr++) == rslast) /* really | dust */
2646 goto thats_all_folks; /* screams | sed :-) */
2650 memcpy((char*)bp, (char*)ptr, cnt); /* this | eat */
2651 bp += cnt; /* screams | dust */
2652 ptr += cnt; /* louder | sed :-) */
2657 if (shortbuffered) { /* oh well, must extend */
2658 cnt = shortbuffered;
2660 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2662 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2663 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2667 FILE_cnt(fp) = cnt; /* deregisterize cnt and ptr */
2669 i = _filbuf(fp); /* get more characters */
2671 ptr = FILE_ptr(fp); /* reregisterize cnt and ptr */
2673 if (i == EOF) /* all done for ever? */
2674 goto thats_really_all_folks;
2676 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2678 SvGROW(sv, bpx + cnt + 2);
2679 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2681 *bp++ = i; /* store character from _filbuf */
2683 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
2684 goto thats_all_folks;
2688 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
2689 bcmp((char*)bp - rslen, rsptr, rslen))
2690 goto screamer; /* go back to the fray */
2691 thats_really_all_folks:
2693 cnt += shortbuffered;
2694 FILE_cnt(fp) = cnt; /* put these back or we're in trouble */
2697 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
2699 #else /* SV_FAST_GETS */
2701 /*The big, slow, and stupid way */
2708 register STDCHAR *bpe = buf + sizeof(buf);
2710 while ((i = getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
2711 ; /* keep reading */
2715 cnt = fread((char*)buf, 1, sizeof(buf), fp);
2716 i = cnt ? (U8)buf[cnt - 1] : EOF;
2720 sv_catpvn(sv, buf, cnt);
2722 sv_setpvn(sv, buf, cnt);
2724 if (i != EOF && /* joy */
2726 SvCUR(sv) < rslen ||
2727 bcmp(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
2734 #endif /* SV_FAST_GETS */
2736 if (RsPARA(rs)) { /* have to do this both before and after */
2737 while (i != EOF) { /* to make sure file boundaries work right */
2746 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
2758 if (SvTHINKFIRST(sv)) {
2759 if (SvREADONLY(sv) && curcop != &compiling)
2763 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
2764 #endif /* OVERLOAD */
2770 flags = SvFLAGS(sv);
2771 if (flags & SVp_IOK) {
2772 (void)SvIOK_only(sv);
2776 if (flags & SVp_NOK) {
2778 (void)SvNOK_only(sv);
2781 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2782 if ((flags & SVTYPEMASK) < SVt_PVNV)
2783 sv_upgrade(sv, SVt_NV);
2785 (void)SvNOK_only(sv);
2789 while (isALPHA(*d)) d++;
2790 while (isDIGIT(*d)) d++;
2792 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2796 while (d >= SvPVX(sv)) {
2806 *(d--) -= 'z' - 'a' + 1;
2809 /* oh,oh, the number grew */
2810 SvGROW(sv, SvCUR(sv) + 2);
2812 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2828 if (SvTHINKFIRST(sv)) {
2829 if (SvREADONLY(sv) && curcop != &compiling)
2833 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
2834 #endif /* OVERLOAD */
2840 flags = SvFLAGS(sv);
2841 if (flags & SVp_IOK) {
2842 (void)SvIOK_only(sv);
2846 if (flags & SVp_NOK) {
2848 (void)SvNOK_only(sv);
2851 if (!(flags & SVp_POK)) {
2852 if ((flags & SVTYPEMASK) < SVt_PVNV)
2853 sv_upgrade(sv, SVt_NV);
2855 (void)SvNOK_only(sv);
2858 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2861 /* Make a string that will exist for the duration of the expression
2862 * evaluation. Actually, it may have to last longer than that, but
2863 * hopefully we won't free it until it has been assigned to a
2864 * permanent location. */
2871 Renew(tmps_stack, tmps_max, SV*);
2875 sv_mortalcopy(oldstr)
2885 sv_setsv(sv,oldstr);
2886 if (++tmps_ix >= tmps_max)
2888 tmps_stack[tmps_ix] = sv;
2902 SvFLAGS(sv) = SVs_TEMP;
2903 if (++tmps_ix >= tmps_max)
2905 tmps_stack[tmps_ix] = sv;
2909 /* same thing without the copying */
2918 if (SvREADONLY(sv) && curcop != &compiling)
2920 if (++tmps_ix >= tmps_max)
2922 tmps_stack[tmps_ix] = sv;
2940 sv_setpvn(sv,s,len);
2983 sv_upgrade(sv, SVt_RV);
2985 SvRV(sv) = SvREFCNT_inc(ref);
2990 /* make an exact duplicate of old */
3000 if (SvTYPE(old) == SVTYPEMASK) {
3001 warn("semi-panic: attempt to dup freed string");
3031 if (!*s) { /* reset ?? searches */
3032 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3033 pm->op_pmflags &= ~PMf_USED;
3038 /* reset variables */
3040 if (!HvARRAY(stash))
3043 Zero(todo, 256, char);
3050 for ( ; i <= max; i++) {
3053 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3054 for (entry = HvARRAY(stash)[i];
3056 entry = entry->hent_next) {
3057 if (!todo[(U8)*entry->hent_key])
3059 gv = (GV*)entry->hent_val;
3062 if (SvTYPE(sv) >= SVt_PV) {
3065 if (SvPVX(sv) != Nullch)
3072 if (HvNAME(GvHV(gv)))
3075 #ifndef VMS /* VMS has no environ array */
3077 environ[0] = Nullch;
3086 sv_2cv(sv, st, gvp, lref)
3096 return *gvp = Nullgv, Nullcv;
3097 switch (SvTYPE(sv)) {
3117 if (SvTYPE(cv) != SVt_PVCV)
3118 croak("Not a subroutine reference");
3126 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3132 if (lref && !GvCV(gv)) {
3135 tmpsv = NEWSV(704,0);
3136 gv_efullname(tmpsv, gv);
3137 newSUB(start_subparse(),
3138 newSVOP(OP_CONST, 0, tmpsv),
3143 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3160 if ((Xpv = (XPV*)SvANY(sv)) &&
3161 (*Xpv->xpv_pv > '0' ||
3163 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3170 return SvIVX(sv) != 0;
3173 return SvNVX(sv) != 0.0;
3175 return sv_2bool(sv);
3199 return (double)SvIVX(Sv);
3214 return sv_2pv(sv, lp);
3219 sv_pvn_force(sv, lp)
3225 if (SvREADONLY(sv) && curcop != &compiling)
3232 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3233 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3240 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3241 op_name[op->op_type]);
3246 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3251 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3252 SvGROW(sv, len + 1);
3253 Move(s,SvPVX(sv),len,char);
3258 SvPOK_on(sv); /* validate pointer */
3260 DEBUG_c(fprintf(stderr,"0x%lx 2pv(%s)\n",
3261 (unsigned long)sv,SvPVX(sv)));
3272 if (ob && SvOBJECT(sv))
3273 return HvNAME(SvSTASH(sv));
3275 switch (SvTYPE(sv)) {
3289 case SVt_PVLV: return "LVALUE";
3290 case SVt_PVAV: return "ARRAY";
3291 case SVt_PVHV: return "HASH";
3292 case SVt_PVCV: return "CODE";
3293 case SVt_PVGV: return "GLOB";
3294 case SVt_PVFM: return "FORMLINE";
3295 default: return "UNKNOWN";
3323 return strEQ(HvNAME(SvSTASH(sv)), name);
3327 newSVrv(rv, classname)
3338 sv_upgrade(rv, SVt_RV);
3339 SvRV(rv) = SvREFCNT_inc(sv);
3343 HV* stash = gv_stashpv(classname, TRUE);
3344 (void)sv_bless(rv, stash);
3350 sv_setref_pv(rv, classname, pv)
3356 sv_setsv(rv, &sv_undef);
3358 sv_setiv(newSVrv(rv,classname), (IV)pv);
3363 sv_setref_iv(rv, classname, iv)
3368 sv_setiv(newSVrv(rv,classname), iv);
3373 sv_setref_nv(rv, classname, nv)
3378 sv_setnv(newSVrv(rv,classname), nv);
3383 sv_setref_pvn(rv, classname, pv, n)
3389 sv_setpvn(newSVrv(rv,classname), pv, n);
3401 croak("Can't bless non-reference value");
3403 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3404 if (SvREADONLY(ref))
3406 if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
3411 (void)SvUPGRADE(ref, SVt_PVMG);
3412 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3416 if (Gv_AMG(stash)) {
3419 #endif /* OVERLOAD */
3428 assert(SvTYPE(sv) == SVt_PVGV);
3432 sv_unmagic(sv, '*');
3433 Safefree(GvNAME(sv));
3435 SvFLAGS(sv) &= ~SVTYPEMASK;
3436 SvFLAGS(sv) |= SVt_PVMG;
3447 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3450 sv_2mortal(rv); /* Schedule for freeing later */
3464 fprintf(stderr, "SV = 0\n");
3468 flags = SvFLAGS(sv);
3471 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
3472 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
3474 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
3475 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
3476 if (flags & SVs_PADMY) strcat(d, "PADMY,");
3477 if (flags & SVs_TEMP) strcat(d, "TEMP,");
3478 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
3479 if (flags & SVs_GMG) strcat(d, "GMG,");
3480 if (flags & SVs_SMG) strcat(d, "SMG,");
3481 if (flags & SVs_RMG) strcat(d, "RMG,");
3484 if (flags & SVf_IOK) strcat(d, "IOK,");
3485 if (flags & SVf_NOK) strcat(d, "NOK,");
3486 if (flags & SVf_POK) strcat(d, "POK,");
3487 if (flags & SVf_ROK) strcat(d, "ROK,");
3488 if (flags & SVf_OOK) strcat(d, "OOK,");
3489 if (flags & SVf_FAKE) strcat(d, "FAKE,");
3490 if (flags & SVf_READONLY) strcat(d, "READONLY,");
3493 if (flags & SVp_IOK) strcat(d, "pIOK,");
3494 if (flags & SVp_NOK) strcat(d, "pNOK,");
3495 if (flags & SVp_POK) strcat(d, "pPOK,");
3496 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
3503 fprintf(stderr, "SV = ");
3506 fprintf(stderr,"NULL%s\n", tmpbuf);
3509 fprintf(stderr,"IV%s\n", tmpbuf);
3512 fprintf(stderr,"NV%s\n", tmpbuf);
3515 fprintf(stderr,"RV%s\n", tmpbuf);
3518 fprintf(stderr,"PV%s\n", tmpbuf);
3521 fprintf(stderr,"PVIV%s\n", tmpbuf);
3524 fprintf(stderr,"PVNV%s\n", tmpbuf);
3527 fprintf(stderr,"PVBM%s\n", tmpbuf);
3530 fprintf(stderr,"PVMG%s\n", tmpbuf);
3533 fprintf(stderr,"PVLV%s\n", tmpbuf);
3536 fprintf(stderr,"PVAV%s\n", tmpbuf);
3539 fprintf(stderr,"PVHV%s\n", tmpbuf);
3542 fprintf(stderr,"PVCV%s\n", tmpbuf);
3545 fprintf(stderr,"PVGV%s\n", tmpbuf);
3548 fprintf(stderr,"PVFM%s\n", tmpbuf);
3551 fprintf(stderr,"PVIO%s\n", tmpbuf);
3554 fprintf(stderr,"UNKNOWN%s\n", tmpbuf);
3557 if (type >= SVt_PVIV || type == SVt_IV)
3558 fprintf(stderr, " IV = %ld\n", (long)SvIVX(sv));
3559 if (type >= SVt_PVNV || type == SVt_NV)
3560 fprintf(stderr, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
3562 fprintf(stderr, " RV = 0x%lx\n", (long)SvRV(sv));
3568 if (type <= SVt_PVLV) {
3570 fprintf(stderr, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
3571 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
3573 fprintf(stderr, " PV = 0\n");
3575 if (type >= SVt_PVMG) {
3577 fprintf(stderr, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
3580 fprintf(stderr, " STASH = %s\n", HvNAME(SvSTASH(sv)));
3584 fprintf(stderr, " TYPE = %c\n", LvTYPE(sv));
3585 fprintf(stderr, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
3586 fprintf(stderr, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
3587 fprintf(stderr, " TARG = 0x%lx\n", (long)LvTARG(sv));
3588 sv_dump(LvTARG(sv));
3591 fprintf(stderr, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
3592 fprintf(stderr, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
3593 fprintf(stderr, " FILL = %ld\n", (long)AvFILL(sv));
3594 fprintf(stderr, " MAX = %ld\n", (long)AvMAX(sv));
3595 fprintf(stderr, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
3596 flags = AvFLAGS(sv);
3598 if (flags & AVf_REAL) strcat(d, "REAL,");
3599 if (flags & AVf_REIFY) strcat(d, "REIFY,");
3600 if (flags & AVf_REUSED) strcat(d, "REUSED,");
3602 d[strlen(d)-1] = '\0';
3603 fprintf(stderr, " FLAGS = (%s)\n", d);
3606 fprintf(stderr, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
3607 fprintf(stderr, " KEYS = %ld\n", (long)HvKEYS(sv));
3608 fprintf(stderr, " FILL = %ld\n", (long)HvFILL(sv));
3609 fprintf(stderr, " MAX = %ld\n", (long)HvMAX(sv));
3610 fprintf(stderr, " RITER = %ld\n", (long)HvRITER(sv));
3611 fprintf(stderr, " EITER = 0x%lx\n",(long) HvEITER(sv));
3613 fprintf(stderr, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
3615 fprintf(stderr, " NAME = \"%s\"\n", HvNAME(sv));
3619 fprintf(stderr, " STASH = 0x%lx\n", (long)CvSTASH(sv));
3620 fprintf(stderr, " START = 0x%lx\n", (long)CvSTART(sv));
3621 fprintf(stderr, " ROOT = 0x%lx\n", (long)CvROOT(sv));
3622 fprintf(stderr, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
3623 fprintf(stderr, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
3624 fprintf(stderr, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
3625 fprintf(stderr, " DEPTH = %ld\n", (long)CvDEPTH(sv));
3626 fprintf(stderr, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
3627 fprintf(stderr, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
3629 fprintf(stderr, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
3630 fprintf(stderr, " CONDP = 0x%lx\n", (long)CvCONDP(sv));
3631 fprintf(stderr, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
3632 #endif /* USE_THREADS */
3633 if (type == SVt_PVFM)
3634 fprintf(stderr, " LINES = %ld\n", (long)FmLINES(sv));
3637 fprintf(stderr, " NAME = %s\n", GvNAME(sv));
3638 fprintf(stderr, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
3639 fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
3640 fprintf(stderr, " GP = 0x%lx\n", (long)GvGP(sv));
3641 fprintf(stderr, " SV = 0x%lx\n", (long)GvSV(sv));
3642 fprintf(stderr, " REFCNT = %ld\n", (long)GvREFCNT(sv));
3643 fprintf(stderr, " IO = 0x%lx\n", (long)GvIOp(sv));
3644 fprintf(stderr, " FORM = 0x%lx\n", (long)GvFORM(sv));
3645 fprintf(stderr, " AV = 0x%lx\n", (long)GvAV(sv));
3646 fprintf(stderr, " HV = 0x%lx\n", (long)GvHV(sv));
3647 fprintf(stderr, " CV = 0x%lx\n", (long)GvCV(sv));
3648 fprintf(stderr, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
3649 fprintf(stderr, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
3650 fprintf(stderr, " LINE = %ld\n", (long)GvLINE(sv));
3651 fprintf(stderr, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
3652 fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
3653 fprintf(stderr, " EGV = 0x%lx\n", (long)GvEGV(sv));
3656 fprintf(stderr, " IFP = 0x%lx\n", (long)IoIFP(sv));
3657 fprintf(stderr, " OFP = 0x%lx\n", (long)IoOFP(sv));
3658 fprintf(stderr, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
3659 fprintf(stderr, " LINES = %ld\n", (long)IoLINES(sv));
3660 fprintf(stderr, " PAGE = %ld\n", (long)IoPAGE(sv));
3661 fprintf(stderr, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
3662 fprintf(stderr, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
3663 fprintf(stderr, " TOP_NAME = %s\n", IoTOP_NAME(sv));
3664 fprintf(stderr, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
3665 fprintf(stderr, " FMT_NAME = %s\n", IoFMT_NAME(sv));
3666 fprintf(stderr, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
3667 fprintf(stderr, " BOTTOM_NAME = %s\n", IoBOTTOM_NAME(sv));
3668 fprintf(stderr, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
3669 fprintf(stderr, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
3670 fprintf(stderr, " TYPE = %c\n", IoTYPE(sv));
3671 fprintf(stderr, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
3690 switch (SvTYPE(sv)) {
3698 croak("Bad filehandle: %s", GvNAME(gv));
3702 croak(no_usym, "filehandle");
3704 return sv_2io(SvRV(sv));
3705 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3711 croak("Bad filehandle: %s", SvPV(sv,na));