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.
17 /* The following is all to get DBL_DIG, in order to pick a nice
18 default value for printing floating point numbers in Gconvert.
28 #define DBL_DIG 15 /* A guess that works lots of places */
31 static SV *more_sv _((void));
32 static XPVIV *more_xiv _((void));
33 static XPVNV *more_xnv _((void));
34 static XPV *more_xpv _((void));
35 static XRV *more_xrv _((void));
36 static SV *new_sv _((void));
37 static XPVIV *new_xiv _((void));
38 static XPVNV *new_xnv _((void));
39 static XPV *new_xpv _((void));
40 static XRV *new_xrv _((void));
41 static void del_xiv _((XPVIV* p));
42 static void del_xnv _((XPVNV* p));
43 static void del_xpv _((XPV* p));
44 static void del_xrv _((XRV* p));
45 static void sv_mortalgrow _((void));
47 static void sv_unglob _((SV* sv));
51 #define new_SV() sv = (SV*)safemalloc(sizeof(SV))
52 #define del_SV(p) free((char*)p)
55 sv_add_arena(ptr, size, flags)
60 if (!(flags & SVf_FAKE))
69 sv_root = (SV*)SvANY(sv); \
81 sv_root = (SV*)SvANY(sv);
93 SvANY(p) = (void *)sv_root; \
107 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
109 svend = &sva[SvREFCNT(sva)];
110 if (p >= sv && p < svend)
114 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
118 SvANY(p) = (void *) sv_root;
124 SvANY(p) = (void *)sv_root; \
131 sv_add_arena(ptr, size, flags)
139 Zero(sva, size, char);
141 /* The first SV in an arena isn't an SV. */
142 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
143 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
144 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
149 svend = &sva[SvREFCNT(sva) - 1];
152 SvANY(sv) = (void *)(SV*)(sv + 1);
153 SvFLAGS(sv) = SVTYPEMASK;
157 SvFLAGS(sv) = SVTYPEMASK;
163 sv_add_arena(safemalloc(1008), 1008, 0);
175 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
177 svend = &sva[SvREFCNT(sva)];
179 if (SvTYPE(sv) != SVTYPEMASK) {
180 fprintf(stderr, "****\n");
196 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
198 svend = &sva[SvREFCNT(sva)];
200 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
201 DEBUG_D((fprintf(stderr, "Cleaning object ref:\n "),
207 /* XXX Might want to check arrays, etc. */
220 for (sva = sv_arenaroot; sva; sva = (SV*) SvANY(sva)) {
222 svend = &sva[SvREFCNT(sva)];
224 if (SvTYPE(sv) != SVTYPEMASK) {
225 DEBUG_D((fprintf(stderr, "Cleaning loops:\n "), sv_dump(sv));)
226 SvFLAGS(sv) |= SVf_BREAK;
240 /* Free arenas here, but be careful about fake ones. (We assume
241 contiguity of the fake ones with the corresponding real ones.) */
243 for (sva = sv_arenaroot; sva; sva = svanext) {
244 svanext = (SV*) SvANY(sva);
245 while (svanext && SvFAKE(svanext))
246 svanext = (SV*) SvANY(svanext);
260 * See comment in more_xiv() -- RAM.
262 xiv_root = (IV**)*xiv;
263 return (XPVIV*)((char*)xiv - sizeof(XPV));
272 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
273 *xiv = (IV *)xiv_root;
281 register IV** xivend;
282 XPV* ptr = (XPV*)safemalloc(1008);
283 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
284 xiv_arenaroot = ptr; /* to keep Purify happy */
287 xivend = &xiv[1008 / sizeof(IV *) - 1];
288 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
290 while (xiv < xivend) {
291 *xiv = (IV *)(xiv + 1);
304 xnv_root = *(double**)xnv;
305 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
314 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
315 *(double**)xnv = xnv_root;
322 register double* xnv;
323 register double* xnvend;
324 xnv = (double*)safemalloc(1008);
325 xnvend = &xnv[1008 / sizeof(double) - 1];
326 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
328 while (xnv < xnvend) {
329 *(double**)xnv = (double*)(xnv + 1);
342 xrv_root = (XRV*)xrv->xrv_rv;
352 p->xrv_rv = (SV*)xrv_root;
360 register XRV* xrvend;
361 xrv_root = (XRV*)safemalloc(1008);
363 xrvend = &xrv[1008 / sizeof(XRV) - 1];
364 while (xrv < xrvend) {
365 xrv->xrv_rv = (SV*)(xrv + 1);
378 xpv_root = (XPV*)xpv->xpv_pv;
388 p->xpv_pv = (char*)xpv_root;
396 register XPV* xpvend;
397 xpv_root = (XPV*)safemalloc(1008);
399 xpvend = &xpv[1008 / sizeof(XPV) - 1];
400 while (xpv < xpvend) {
401 xpv->xpv_pv = (char*)(xpv + 1);
409 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
410 #define del_XIV(p) free((char*)p)
412 #define new_XIV() (void*)new_xiv()
413 #define del_XIV(p) del_xiv(p)
417 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
418 #define del_XNV(p) free((char*)p)
420 #define new_XNV() (void*)new_xnv()
421 #define del_XNV(p) del_xnv(p)
425 #define new_XRV() (void*)safemalloc(sizeof(XRV))
426 #define del_XRV(p) free((char*)p)
428 #define new_XRV() (void*)new_xrv()
429 #define del_XRV(p) del_xrv(p)
433 #define new_XPV() (void*)safemalloc(sizeof(XPV))
434 #define del_XPV(p) free((char*)p)
436 #define new_XPV() (void*)new_xpv()
437 #define del_XPV(p) del_xpv(p)
440 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
441 #define del_XPVIV(p) free((char*)p)
443 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
444 #define del_XPVNV(p) free((char*)p)
446 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
447 #define del_XPVMG(p) free((char*)p)
449 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
450 #define del_XPVLV(p) free((char*)p)
452 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
453 #define del_XPVAV(p) free((char*)p)
455 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
456 #define del_XPVHV(p) free((char*)p)
458 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
459 #define del_XPVCV(p) free((char*)p)
461 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
462 #define del_XPVGV(p) free((char*)p)
464 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
465 #define del_XPVBM(p) free((char*)p)
467 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
468 #define del_XPVFM(p) free((char*)p)
470 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
471 #define del_XPVIO(p) free((char*)p)
486 if (SvTYPE(sv) == mt)
489 switch (SvTYPE(sv)) {
504 nv = (double)SvIVX(sv);
510 else if (mt < SVt_PVIV)
527 pv = (char*)SvRV(sv);
531 nv = (double)(unsigned long)pv;
548 else if (mt == SVt_NV)
560 del_XPVIV(SvANY(sv));
571 del_XPVNV(SvANY(sv));
581 del_XPVMG(SvANY(sv));
584 croak("Can't upgrade that kind of scalar");
589 croak("Can't upgrade to undef");
591 SvANY(sv) = new_XIV();
595 SvANY(sv) = new_XNV();
599 SvANY(sv) = new_XRV();
603 SvANY(sv) = new_XPV();
609 SvANY(sv) = new_XPVIV();
619 SvANY(sv) = new_XPVNV();
627 SvANY(sv) = new_XPVMG();
637 SvANY(sv) = new_XPVLV();
651 SvANY(sv) = new_XPVAV();
666 SvANY(sv) = new_XPVHV();
682 SvANY(sv) = new_XPVCV();
683 Zero(SvANY(sv), 1, XPVCV);
693 SvANY(sv) = new_XPVGV();
707 SvANY(sv) = new_XPVBM();
720 SvANY(sv) = new_XPVFM();
721 Zero(SvANY(sv), 1, XPVFM);
731 SvANY(sv) = new_XPVIO();
732 Zero(SvANY(sv), 1, XPVIO);
743 SvFLAGS(sv) &= ~SVTYPEMASK;
761 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
765 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
766 if (sv == &sv_undef) {
767 strcpy(t, "SV_UNDEF");
768 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
769 SVs_GMG|SVs_SMG|SVs_RMG)) &&
773 else if (sv == &sv_no) {
775 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
776 SVs_GMG|SVs_SMG|SVs_RMG)) &&
777 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
785 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
786 SVs_GMG|SVs_SMG|SVs_RMG)) &&
787 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
790 SvPVX(sv) && *SvPVX(sv) == '1' &&
797 else if (SvREFCNT(sv) == 0) {
803 if (t - tokenbuf + unref > 10) {
804 strcpy(tokenbuf + unref + 3,"...");
810 switch (SvTYPE(sv)) {
850 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
873 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
875 sprintf(t,"(\"%.127s\")",SvPVX(sv));
878 sprintf(t,"(%g)",SvNVX(sv));
880 sprintf(t,"(%ld)",(long)SvIVX(sv));
902 SvLEN(sv) += SvIVX(sv);
903 SvPVX(sv) -= SvIVX(sv);
905 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
907 SvFLAGS(sv) &= ~SVf_OOK;
917 unsigned long newlen;
923 if (newlen >= 0x10000) {
924 fprintf(stderr, "Allocation too large: %lx\n", newlen);
930 if (SvTYPE(sv) < SVt_PV) {
931 sv_upgrade(sv, SVt_PV);
934 else if (SvOOK(sv)) { /* pv is offset? */
937 if (newlen > SvLEN(sv))
938 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
942 if (newlen > SvLEN(sv)) { /* need more room? */
944 Renew(s,newlen,char);
946 New(703,s,newlen,char);
948 SvLEN_set(sv, newlen);
958 if (SvTHINKFIRST(sv)) {
959 if (SvREADONLY(sv) && curcop != &compiling)
964 switch (SvTYPE(sv)) {
966 sv_upgrade(sv, SVt_IV);
969 sv_upgrade(sv, SVt_PVNV);
973 sv_upgrade(sv, SVt_PVIV);
987 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
988 op_name[op->op_type]);
991 (void)SvIOK_only(sv); /* validate number */
1000 if (SvTHINKFIRST(sv)) {
1001 if (SvREADONLY(sv) && curcop != &compiling)
1006 switch (SvTYPE(sv)) {
1009 sv_upgrade(sv, SVt_NV);
1015 sv_upgrade(sv, SVt_PVNV);
1022 (void)SvOOK_off(sv);
1035 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1036 op_name[op->op_type]);
1039 (void)SvNOK_only(sv); /* validate number */
1052 for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
1054 if (ch & 128 && !isprint(ch)) {
1074 warn("Argument \"%s\" isn't numeric for %s", tmpbuf,
1075 op_name[op->op_type]);
1077 warn("Argument \"%s\" isn't numeric", tmpbuf);
1086 if (SvGMAGICAL(sv)) {
1091 if (SvNVX(sv) < 0.0)
1092 return I_V(SvNVX(sv));
1094 return (IV) U_V(SvNVX(sv));
1096 if (SvPOKp(sv) && SvLEN(sv)) {
1097 if (dowarn && !looks_like_number(sv))
1099 return (IV)atol(SvPVX(sv));
1105 if (SvTHINKFIRST(sv)) {
1109 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1110 return SvIV(tmpstr);
1111 #endif /* OVERLOAD */
1112 return (IV)SvRV(sv);
1114 if (SvREADONLY(sv)) {
1116 if (SvNVX(sv) < 0.0)
1117 return I_V(SvNVX(sv));
1119 return (IV) U_V(SvNVX(sv));
1121 if (SvPOKp(sv) && SvLEN(sv)) {
1122 if (dowarn && !looks_like_number(sv))
1124 return (IV)atol(SvPVX(sv));
1131 switch (SvTYPE(sv)) {
1133 sv_upgrade(sv, SVt_IV);
1136 sv_upgrade(sv, SVt_PVIV);
1139 sv_upgrade(sv, SVt_PVNV);
1143 if (SvNVX(sv) < 0.0)
1144 SvIVX(sv) = I_V(SvNVX(sv));
1146 SvIVX(sv) = (IV) U_V(SvNVX(sv));
1148 else if (SvPOKp(sv) && SvLEN(sv)) {
1149 if (dowarn && !looks_like_number(sv))
1151 SvIVX(sv) = (IV)atol(SvPVX(sv));
1154 if (dowarn && !localizing)
1159 DEBUG_c(fprintf(stderr,"0x%lx 2iv(%ld)\n",
1160 (unsigned long)sv,(long)SvIVX(sv)));
1170 if (SvGMAGICAL(sv)) {
1174 if (SvPOKp(sv) && SvLEN(sv)) {
1175 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1177 return atof(SvPVX(sv));
1180 return (double)SvIVX(sv);
1185 if (SvTHINKFIRST(sv)) {
1189 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1190 return SvNV(tmpstr);
1191 #endif /* OVERLOAD */
1192 return (double)(unsigned long)SvRV(sv);
1194 if (SvREADONLY(sv)) {
1195 if (SvPOKp(sv) && SvLEN(sv)) {
1196 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1198 return atof(SvPVX(sv));
1201 return (double)SvIVX(sv);
1207 if (SvTYPE(sv) < SVt_NV) {
1208 if (SvTYPE(sv) == SVt_IV)
1209 sv_upgrade(sv, SVt_PVNV);
1211 sv_upgrade(sv, SVt_NV);
1212 DEBUG_c(fprintf(stderr,"0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1214 else if (SvTYPE(sv) < SVt_PVNV)
1215 sv_upgrade(sv, SVt_PVNV);
1217 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1219 SvNVX(sv) = (double)SvIVX(sv);
1221 else if (SvPOKp(sv) && SvLEN(sv)) {
1222 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1224 SvNVX(sv) = atof(SvPVX(sv));
1227 if (dowarn && !localizing)
1232 DEBUG_c(fprintf(stderr,"0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1248 if (SvGMAGICAL(sv)) {
1255 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1259 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1267 if (SvTHINKFIRST(sv)) {
1271 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1272 return SvPV(tmpstr,*lp);
1273 #endif /* OVERLOAD */
1278 switch (SvTYPE(sv)) {
1287 case SVt_PVMG: s = "SCALAR"; break;
1288 case SVt_PVLV: s = "LVALUE"; break;
1289 case SVt_PVAV: s = "ARRAY"; break;
1290 case SVt_PVHV: s = "HASH"; break;
1291 case SVt_PVCV: s = "CODE"; break;
1292 case SVt_PVGV: s = "GLOB"; break;
1293 case SVt_PVFM: s = "FORMATLINE"; break;
1294 case SVt_PVIO: s = "FILEHANDLE"; break;
1295 default: s = "UNKNOWN"; break;
1298 sprintf(tokenbuf, "%s=%s(0x%lx)",
1299 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1301 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1307 if (SvREADONLY(sv)) {
1309 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1313 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1322 if (!SvUPGRADE(sv, SVt_PV))
1325 if (SvTYPE(sv) < SVt_PVNV)
1326 sv_upgrade(sv, SVt_PVNV);
1329 olderrno = errno; /* some Xenix systems wipe out errno here */
1331 if (SvNVX(sv) == 0.0)
1332 (void)strcpy(s,"0");
1335 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1337 #ifdef FIXNEGATIVEZERO
1338 if (*s == '-' && s[1] == '0' && !s[2])
1347 else if (SvIOKp(sv)) {
1348 if (SvTYPE(sv) < SVt_PVIV)
1349 sv_upgrade(sv, SVt_PVIV);
1352 olderrno = errno; /* some Xenix systems wipe out errno here */
1353 (void)sprintf(s,"%ld",(long)SvIVX(sv));
1358 if (dowarn && !localizing)
1364 *lp = s - SvPVX(sv);
1367 DEBUG_c(fprintf(stderr,"0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1371 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1372 /* Sneaky stuff here */
1375 sv = sv_newmortal();
1376 *lp = strlen(tokenbuf);
1377 sv_setpvn(sv, tokenbuf, *lp);
1383 #ifdef FIXNEGATIVEZERO
1384 if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
1385 strcpy(tokenbuf,"0");
1387 (void)SvUPGRADE(sv, SVt_PV);
1388 len = *lp = strlen(tokenbuf);
1389 s = SvGROW(sv, len + 1);
1391 (void)strcpy(s, tokenbuf);
1392 /* NO SvPOK_on(sv) here! */
1397 /* This function is only called on magical items */
1411 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1412 return SvTRUE(tmpsv);
1414 #endif /* OVERLOAD */
1415 return SvRV(sv) != 0;
1419 if ((Xpv = (XPV*)SvANY(sv)) &&
1420 (*Xpv->xpv_pv > '0' ||
1422 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1429 return SvIVX(sv) != 0;
1432 return SvNVX(sv) != 0.0;
1439 /* Note: sv_setsv() should not be called with a source string that needs
1440 * to be reused, since it may destroy the source string if it is marked
1449 register U32 sflags;
1455 if (SvTHINKFIRST(dstr)) {
1456 if (SvREADONLY(dstr) && curcop != &compiling)
1463 stype = SvTYPE(sstr);
1464 dtype = SvTYPE(dstr);
1466 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1467 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1468 sv_setpvn(dstr, "", 0);
1469 (void)SvPOK_only(dstr);
1470 dtype = SvTYPE(dstr);
1475 #endif /* OVERLOAD */
1476 /* There's a lot of redundancy below but we're going for speed here */
1480 (void)SvOK_off(dstr);
1483 if (dtype <= SVt_PV) {
1485 sv_upgrade(dstr, SVt_IV);
1486 else if (dtype == SVt_NV)
1487 sv_upgrade(dstr, SVt_PVNV);
1488 else if (dtype <= SVt_PV)
1489 sv_upgrade(dstr, SVt_PVIV);
1493 if (dtype <= SVt_PVIV) {
1495 sv_upgrade(dstr, SVt_NV);
1496 else if (dtype == SVt_PVIV)
1497 sv_upgrade(dstr, SVt_PVNV);
1498 else if (dtype <= SVt_PV)
1499 sv_upgrade(dstr, SVt_PVNV);
1504 sv_upgrade(dstr, SVt_RV);
1508 sv_upgrade(dstr, SVt_PV);
1511 if (dtype < SVt_PVIV)
1512 sv_upgrade(dstr, SVt_PVIV);
1515 if (dtype < SVt_PVNV)
1516 sv_upgrade(dstr, SVt_PVNV);
1520 sv_upgrade(dstr, SVt_PVNV);
1529 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1530 op_name[op->op_type]);
1532 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1536 if (dtype <= SVt_PVGV) {
1537 if (dtype == SVt_PVGV)
1538 GvFLAGS(sstr) |= GVf_IMPORTED;
1540 char *name = GvNAME(sstr);
1541 STRLEN len = GvNAMELEN(sstr);
1542 sv_upgrade(dstr, SVt_PVGV);
1543 sv_magic(dstr, dstr, '*', name, len);
1544 GvSTASH(dstr) = GvSTASH(sstr);
1545 GvNAME(dstr) = savepvn(name, len);
1546 GvNAMELEN(dstr) = len;
1547 SvFAKE_on(dstr); /* can coerce to non-glob */
1549 (void)SvOK_off(dstr);
1552 GvGP(dstr) = gp_ref(GvGP(sstr));
1554 GvFLAGS(dstr) &= ~GVf_INTRO; /* one-shot flag */
1562 sv_upgrade(dstr, stype);
1563 if (SvGMAGICAL(sstr))
1567 sflags = SvFLAGS(sstr);
1569 if (sflags & SVf_ROK) {
1570 if (dtype >= SVt_PV) {
1571 if (dtype == SVt_PVGV) {
1572 SV *sref = SvREFCNT_inc(SvRV(sstr));
1574 int intro = GvFLAGS(dstr) & GVf_INTRO;
1578 GvGP(dstr)->gp_refcnt--;
1579 Newz(602,gp, 1, GP);
1582 GvSV(dstr) = NEWSV(72,0);
1583 GvLINE(dstr) = curcop->cop_line;
1585 GvFLAGS(dstr) &= ~GVf_INTRO; /* one-shot flag */
1588 switch (SvTYPE(sref)) {
1591 SAVESPTR(GvAV(dstr));
1593 dref = (SV*)GvAV(dstr);
1594 GvAV(dstr) = (AV*)sref;
1598 SAVESPTR(GvHV(dstr));
1600 dref = (SV*)GvHV(dstr);
1601 GvHV(dstr) = (HV*)sref;
1605 SAVESPTR(GvCV(dstr));
1607 CV* cv = GvCV(dstr);
1610 if (dowarn && sref != dref &&
1611 !GvCVGEN((GV*)dstr) &&
1612 (CvROOT(cv) || CvXSUB(cv)) )
1613 warn("Subroutine %s redefined",
1614 GvENAME((GV*)dstr));
1618 GvCV(dstr) = (CV*)sref;
1622 SAVESPTR(GvSV(dstr));
1624 dref = (SV*)GvSV(dstr);
1629 GvFLAGS(dstr) |= GVf_IMPORTED; /* crude */
1638 Safefree(SvPVX(dstr));
1639 SvLEN(dstr)=SvCUR(dstr)=0;
1642 (void)SvOK_off(dstr);
1643 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1645 if (sflags & SVp_NOK) {
1647 SvNVX(dstr) = SvNVX(sstr);
1649 if (sflags & SVp_IOK) {
1650 (void)SvIOK_on(dstr);
1651 SvIVX(dstr) = SvIVX(sstr);
1654 if (SvAMAGIC(sstr)) {
1657 #endif /* OVERLOAD */
1659 else if (sflags & SVp_POK) {
1662 * Check to see if we can just swipe the string. If so, it's a
1663 * possible small lose on short strings, but a big win on long ones.
1664 * It might even be a win on short strings if SvPVX(dstr)
1665 * has to be allocated and SvPVX(sstr) has to be freed.
1668 if (SvTEMP(sstr)) { /* slated for free anyway? */
1669 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
1670 (void)SvOOK_off(dstr);
1671 Safefree(SvPVX(dstr));
1673 SvPV_set(dstr, SvPVX(sstr));
1674 SvLEN_set(dstr, SvLEN(sstr));
1675 SvCUR_set(dstr, SvCUR(sstr));
1676 (void)SvPOK_only(dstr);
1678 SvPV_set(sstr, Nullch);
1680 SvPOK_off(sstr); /* wipe out any weird flags */
1681 SvPVX(sstr) = 0; /* so sstr frees uneventfully */
1683 else { /* have to copy actual string */
1684 STRLEN len = SvCUR(sstr);
1686 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1687 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1688 SvCUR_set(dstr, len);
1689 *SvEND(dstr) = '\0';
1690 (void)SvPOK_only(dstr);
1693 if (sflags & SVp_NOK) {
1695 SvNVX(dstr) = SvNVX(sstr);
1697 if (sflags & SVp_IOK) {
1698 (void)SvIOK_on(dstr);
1699 SvIVX(dstr) = SvIVX(sstr);
1702 else if (sflags & SVp_NOK) {
1703 SvNVX(dstr) = SvNVX(sstr);
1704 (void)SvNOK_only(dstr);
1706 (void)SvIOK_on(dstr);
1707 SvIVX(dstr) = SvIVX(sstr);
1710 else if (sflags & SVp_IOK) {
1711 (void)SvIOK_only(dstr);
1712 SvIVX(dstr) = SvIVX(sstr);
1715 (void)SvOK_off(dstr);
1721 sv_setpvn(sv,ptr,len)
1724 register STRLEN len;
1727 if (SvTHINKFIRST(sv)) {
1728 if (SvREADONLY(sv) && curcop != &compiling)
1737 if (!SvUPGRADE(sv, SVt_PV))
1739 SvGROW(sv, len + 1);
1740 Move(ptr,SvPVX(sv),len,char);
1743 (void)SvPOK_only(sv); /* validate pointer */
1752 register STRLEN len;
1754 if (SvTHINKFIRST(sv)) {
1755 if (SvREADONLY(sv) && curcop != &compiling)
1765 if (!SvUPGRADE(sv, SVt_PV))
1767 SvGROW(sv, len + 1);
1768 Move(ptr,SvPVX(sv),len+1,char);
1770 (void)SvPOK_only(sv); /* validate pointer */
1775 sv_usepvn(sv,ptr,len)
1778 register STRLEN len;
1780 if (SvTHINKFIRST(sv)) {
1781 if (SvREADONLY(sv) && curcop != &compiling)
1786 if (!SvUPGRADE(sv, SVt_PV))
1793 Safefree(SvPVX(sv));
1794 Renew(ptr, len+1, char);
1797 SvLEN_set(sv, len+1);
1799 (void)SvPOK_only(sv); /* validate pointer */
1804 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1808 register STRLEN delta;
1810 if (!ptr || !SvPOKp(sv))
1812 if (SvTHINKFIRST(sv)) {
1813 if (SvREADONLY(sv) && curcop != &compiling)
1818 if (SvTYPE(sv) < SVt_PVIV)
1819 sv_upgrade(sv,SVt_PVIV);
1823 SvFLAGS(sv) |= SVf_OOK;
1825 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1826 delta = ptr - SvPVX(sv);
1834 sv_catpvn(sv,ptr,len)
1837 register STRLEN len;
1842 junk = SvPV_force(sv, tlen);
1843 SvGROW(sv, tlen + len + 1);
1846 Move(ptr,SvPVX(sv)+tlen,len,char);
1849 (void)SvPOK_only(sv); /* validate pointer */
1862 if (s = SvPV(sstr, len))
1863 sv_catpvn(dstr,s,len);
1871 register STRLEN len;
1877 junk = SvPV_force(sv, tlen);
1879 SvGROW(sv, tlen + len + 1);
1882 Move(ptr,SvPVX(sv)+tlen,len+1,char);
1884 (void)SvPOK_only(sv); /* validate pointer */
1904 sv_upgrade(sv, SVt_PV);
1905 SvGROW(sv, len + 1);
1911 sv_magic(sv, obj, how, name, namlen)
1920 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", how))
1922 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
1923 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
1930 if (!SvUPGRADE(sv, SVt_PVMG))
1933 Newz(702,mg, 1, MAGIC);
1934 mg->mg_moremagic = SvMAGIC(sv);
1937 if (!obj || obj == sv || how == '#')
1940 mg->mg_obj = SvREFCNT_inc(obj);
1941 mg->mg_flags |= MGf_REFCOUNTED;
1944 mg->mg_len = namlen;
1945 if (name && namlen >= 0)
1946 mg->mg_ptr = savepvn(name, namlen);
1949 mg->mg_virtual = &vtbl_sv;
1953 mg->mg_virtual = &vtbl_amagic;
1956 mg->mg_virtual = &vtbl_amagicelem;
1961 #endif /* OVERLOAD */
1963 mg->mg_virtual = &vtbl_bm;
1966 mg->mg_virtual = &vtbl_env;
1969 mg->mg_virtual = &vtbl_envelem;
1972 mg->mg_virtual = &vtbl_mglob;
1975 mg->mg_virtual = &vtbl_isa;
1978 mg->mg_virtual = &vtbl_isaelem;
1985 mg->mg_virtual = &vtbl_dbline;
1988 mg->mg_virtual = &vtbl_pack;
1992 mg->mg_virtual = &vtbl_packelem;
1995 mg->mg_virtual = &vtbl_sig;
1998 mg->mg_virtual = &vtbl_sigelem;
2001 mg->mg_virtual = &vtbl_taint;
2005 mg->mg_virtual = &vtbl_uvar;
2008 mg->mg_virtual = &vtbl_vec;
2011 mg->mg_virtual = &vtbl_substr;
2014 mg->mg_virtual = &vtbl_glob;
2017 mg->mg_virtual = &vtbl_arylen;
2020 mg->mg_virtual = &vtbl_pos;
2022 case '~': /* Reserved for use by extensions not perl internals. */
2023 /* Useful for attaching extension internal data to perl vars. */
2024 /* Note that multiple extensions may clash if magical scalars */
2025 /* etc holding private data from one are passed to another. */
2029 croak("Don't know how to handle magic of type '%c'", how);
2033 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2037 sv_unmagic(sv, type)
2046 for (mg = *mgp; mg; mg = *mgp) {
2047 if (mg->mg_type == type) {
2048 MGVTBL* vtbl = mg->mg_virtual;
2049 *mgp = mg->mg_moremagic;
2050 if (vtbl && vtbl->svt_free)
2051 (*vtbl->svt_free)(sv, mg);
2052 if (mg->mg_ptr && mg->mg_type != 'g')
2053 Safefree(mg->mg_ptr);
2054 if (mg->mg_flags & MGf_REFCOUNTED)
2055 SvREFCNT_dec(mg->mg_obj);
2059 mgp = &mg->mg_moremagic;
2063 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2070 sv_insert(bigstr,offset,len,little,littlelen)
2079 register char *midend;
2080 register char *bigend;
2084 croak("Can't modify non-existent substring");
2085 SvPV_force(bigstr, na);
2087 i = littlelen - len;
2088 if (i > 0) { /* string might grow */
2089 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2090 mid = big + offset + len;
2091 midend = bigend = big + SvCUR(bigstr);
2094 while (midend > mid) /* shove everything down */
2095 *--bigend = *--midend;
2096 Move(little,big+offset,littlelen,char);
2102 Move(little,SvPVX(bigstr)+offset,len,char);
2107 big = SvPVX(bigstr);
2110 bigend = big + SvCUR(bigstr);
2112 if (midend > bigend)
2113 croak("panic: sv_insert");
2115 if (mid - big > bigend - midend) { /* faster to shorten from end */
2117 Move(little, mid, littlelen,char);
2120 i = bigend - midend;
2122 Move(midend, mid, i,char);
2126 SvCUR_set(bigstr, mid - big);
2129 else if (i = mid - big) { /* faster from front */
2130 midend -= littlelen;
2132 sv_chop(bigstr,midend-i);
2137 Move(little, mid, littlelen,char);
2139 else if (littlelen) {
2140 midend -= littlelen;
2141 sv_chop(bigstr,midend);
2142 Move(little,midend,littlelen,char);
2145 sv_chop(bigstr,midend);
2150 /* make sv point to what nstr did */
2157 U32 refcnt = SvREFCNT(sv);
2158 if (SvTHINKFIRST(sv)) {
2159 if (SvREADONLY(sv) && curcop != &compiling)
2164 if (SvREFCNT(nsv) != 1)
2165 warn("Reference miscount in sv_replace()");
2166 if (SvMAGICAL(sv)) {
2170 sv_upgrade(nsv, SVt_PVMG);
2171 SvMAGIC(nsv) = SvMAGIC(sv);
2172 SvFLAGS(nsv) |= SvMAGICAL(sv);
2178 StructCopy(nsv,sv,SV);
2179 SvREFCNT(sv) = refcnt;
2188 assert(SvREFCNT(sv) == 0);
2194 if (defstash) { /* Still have a symbol table? */
2195 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2198 SAVEFREESV(SvSTASH(sv));
2199 if (destructor && GvCV(destructor)) {
2203 sv_upgrade(&ref, SVt_RV);
2204 SAVEI32(SvREFCNT(sv));
2205 SvRV(&ref) = SvREFCNT_inc(sv);
2212 perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
2213 del_XRV(SvANY(&ref));
2218 SvREFCNT_dec(SvSTASH(sv));
2220 SvOBJECT_off(sv); /* Curse the object. */
2221 if (SvTYPE(sv) != SVt_PVIO)
2222 --sv_objcount; /* XXX Might want something more general */
2227 switch (SvTYPE(sv)) {
2229 Safefree(IoTOP_NAME(sv));
2230 Safefree(IoFMT_NAME(sv));
2231 Safefree(IoBOTTOM_NAME(sv));
2247 Safefree(GvNAME(sv));
2254 (void)SvOOK_off(sv);
2259 SvREFCNT_dec(SvRV(sv));
2261 Safefree(SvPVX(sv));
2271 switch (SvTYPE(sv)) {
2287 del_XPVIV(SvANY(sv));
2290 del_XPVNV(SvANY(sv));
2293 del_XPVMG(SvANY(sv));
2296 del_XPVLV(SvANY(sv));
2299 del_XPVAV(SvANY(sv));
2302 del_XPVHV(SvANY(sv));
2305 del_XPVCV(SvANY(sv));
2308 del_XPVGV(SvANY(sv));
2311 del_XPVBM(SvANY(sv));
2314 del_XPVFM(SvANY(sv));
2317 del_XPVIO(SvANY(sv));
2320 SvFLAGS(sv) &= SVf_BREAK;
2321 SvFLAGS(sv) |= SVTYPEMASK;
2339 if (SvREADONLY(sv)) {
2340 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2343 if (SvREFCNT(sv) == 0) {
2344 if (SvFLAGS(sv) & SVf_BREAK)
2346 warn("Attempt to free unreferenced scalar");
2349 if (--SvREFCNT(sv) > 0)
2353 warn("Attempt to free temp prematurely");
2374 junk = SvPV(sv, len);
2393 pv1 = SvPV(str1, cur1);
2398 pv2 = SvPV(str2, cur2);
2403 return !bcmp(pv1, pv2, cur1);
2422 pv1 = SvPV(str1, cur1);
2429 pv2 = SvPV(str2, cur2);
2432 return cur2 ? -1 : 0;
2438 if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
2439 return retval < 0 ? -1 : 1;
2444 else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
2445 return retval < 0 ? -1 : 1;
2446 else if (cur1 == cur2)
2453 sv_gets(sv,fp,append)
2458 register char *bp; /* we're going to steal some values */
2459 #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE)
2460 register I32 cnt; /* from the stdio struct and put EVERYTHING */
2461 register STDCHAR *ptr; /* in the innermost loop into registers */
2465 register I32 newline = rschar;/* (assuming >= 6 registers) */
2468 if (SvTHINKFIRST(sv)) {
2469 if (SvREADONLY(sv) && curcop != &compiling)
2474 if (!SvUPGRADE(sv, SVt_PV))
2476 if (rspara) { /* have to do this both before and after */
2477 do { /* to make sure file boundaries work right */
2489 #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE)
2490 /* Here is some breathtakingly efficient cheating */
2491 cnt = FILE_cnt(fp); /* get count into register */
2492 (void)SvPOK_only(sv); /* validate pointer */
2493 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2494 if (cnt > 80 && SvLEN(sv) > append) {
2495 shortbuffered = cnt - SvLEN(sv) + append + 1;
2496 cnt -= shortbuffered;
2500 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2505 bp = SvPVX(sv) + append; /* move these two too to registers */
2510 while (--cnt >= 0) { /* this */ /* eat */
2511 if ((*bp++ = *ptr++) == newline) /* really */ /* dust */
2512 goto thats_all_folks; /* screams */ /* sed :-) */
2516 if (shortbuffered) { /* oh well, must extend */
2517 cnt = shortbuffered;
2519 bpx = bp - SvPVX(sv); /* prepare for possible relocation */
2521 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2522 bp = SvPVX(sv) + bpx; /* reconstitute our pointer */
2526 FILE_cnt(fp) = cnt; /* deregisterize cnt and ptr */
2528 i = _filbuf(fp); /* get more characters */
2530 ptr = FILE_ptr(fp); /* reregisterize cnt and ptr */
2532 if (i == EOF) /* all done for ever? */
2533 goto thats_really_all_folks;
2535 bpx = bp - SvPVX(sv); /* prepare for possible relocation */
2537 SvGROW(sv, bpx + cnt + 2);
2538 bp = SvPVX(sv) + bpx; /* reconstitute our pointer */
2540 if (i == newline) { /* all done for now? */
2542 goto thats_all_folks;
2544 *bp++ = i; /* now go back to screaming loop */
2548 if (rslen > 1 && (bp - SvPVX(sv) < rslen || bcmp(bp - rslen, rs, rslen)))
2549 goto screamer; /* go back to the fray */
2550 thats_really_all_folks:
2552 cnt += shortbuffered;
2553 FILE_cnt(fp) = cnt; /* put these back or we're in trouble */
2556 SvCUR_set(sv, bp - SvPVX(sv)); /* set length */
2558 #else /* USE_STDIO_PTR && STDIO_PTR_LVALUE && STDIO_CNT_LVALUE */
2559 /*The big, slow, and stupid way */
2562 register char * bpe = buf + sizeof(buf) - 3;
2566 while ((i = getc(fp)) != EOF && (*bp++ = i) != newline && bp < bpe) ;
2569 sv_catpvn(sv, buf, bp - buf);
2571 sv_setpvn(sv, buf, bp - buf);
2572 if (i != EOF /* joy */
2580 bcmp(SvPVX(sv) + SvCUR(sv) - rslen, rs, rslen)
2591 #endif /* USE_STDIO_PTR && STDIO_PTR_LVALUE && STDIO_CNT_LVALUE */
2602 return SvCUR(sv) - append ? SvPVX(sv) : Nullch;
2614 if (SvTHINKFIRST(sv)) {
2615 if (SvREADONLY(sv) && curcop != &compiling)
2619 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
2620 #endif /* OVERLOAD */
2626 flags = SvFLAGS(sv);
2627 if (flags & SVp_IOK) {
2629 (void)SvIOK_only(sv);
2632 if (flags & SVp_NOK) {
2634 (void)SvNOK_only(sv);
2637 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2638 if ((flags & SVTYPEMASK) < SVt_PVNV)
2639 sv_upgrade(sv, SVt_NV);
2641 (void)SvNOK_only(sv);
2645 while (isALPHA(*d)) d++;
2646 while (isDIGIT(*d)) d++;
2648 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2652 while (d >= SvPVX(sv)) {
2662 *(d--) -= 'z' - 'a' + 1;
2665 /* oh,oh, the number grew */
2666 SvGROW(sv, SvCUR(sv) + 2);
2668 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2684 if (SvTHINKFIRST(sv)) {
2685 if (SvREADONLY(sv) && curcop != &compiling)
2689 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
2690 #endif /* OVERLOAD */
2696 flags = SvFLAGS(sv);
2697 if (flags & SVp_IOK) {
2699 (void)SvIOK_only(sv);
2702 if (flags & SVp_NOK) {
2704 (void)SvNOK_only(sv);
2707 if (!(flags & SVp_POK)) {
2708 if ((flags & SVTYPEMASK) < SVt_PVNV)
2709 sv_upgrade(sv, SVt_NV);
2711 (void)SvNOK_only(sv);
2714 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2717 /* Make a string that will exist for the duration of the expression
2718 * evaluation. Actually, it may have to last longer than that, but
2719 * hopefully we won't free it until it has been assigned to a
2720 * permanent location. */
2726 Renew(tmps_stack, tmps_max, SV*);
2730 sv_mortalcopy(oldstr)
2739 sv_setsv(sv,oldstr);
2740 if (++tmps_ix >= tmps_max)
2742 tmps_stack[tmps_ix] = sv;
2755 SvFLAGS(sv) = SVs_TEMP;
2756 if (++tmps_ix >= tmps_max)
2758 tmps_stack[tmps_ix] = sv;
2762 /* same thing without the copying */
2770 if (SvREADONLY(sv) && curcop != &compiling)
2772 if (++tmps_ix >= tmps_max)
2774 tmps_stack[tmps_ix] = sv;
2792 sv_setpvn(sv,s,len);
2834 sv_upgrade(sv, SVt_RV);
2836 SvRV(sv) = SvREFCNT_inc(ref);
2841 /* make an exact duplicate of old */
2851 if (SvTYPE(old) == SVTYPEMASK) {
2852 warn("semi-panic: attempt to dup freed string");
2882 if (!*s) { /* reset ?? searches */
2883 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
2884 pm->op_pmflags &= ~PMf_USED;
2889 /* reset variables */
2891 if (!HvARRAY(stash))
2894 Zero(todo, 256, char);
2901 for ( ; i <= max; i++) {
2904 for (i = 0; i <= (I32) HvMAX(stash); i++) {
2905 for (entry = HvARRAY(stash)[i];
2907 entry = entry->hent_next) {
2908 if (!todo[(U8)*entry->hent_key])
2910 gv = (GV*)entry->hent_val;
2913 if (SvTYPE(sv) >= SVt_PV) {
2916 if (SvPVX(sv) != Nullch)
2923 if (HvNAME(GvHV(gv)))
2926 #ifndef VMS /* VMS has no environ array */
2928 environ[0] = Nullch;
2937 sv_2cv(sv, st, gvp, lref)
2947 return *gvp = Nullgv, Nullcv;
2948 switch (SvTYPE(sv)) {
2968 if (SvTYPE(cv) != SVt_PVCV)
2969 croak("Not a subroutine reference");
2977 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
2983 if (lref && !GvCV(gv)) {
2986 tmpsv = NEWSV(704,0);
2987 gv_efullname(tmpsv, gv);
2988 newSUB(start_subparse(),
2989 newSVOP(OP_CONST, 0, tmpsv),
2994 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3011 if ((Xpv = (XPV*)SvANY(sv)) &&
3012 (*Xpv->xpv_pv > '0' ||
3014 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3021 return SvIVX(sv) != 0;
3024 return SvNVX(sv) != 0.0;
3026 return sv_2bool(sv);
3050 return (double)SvIVX(Sv);
3065 return sv_2pv(sv, lp);
3070 sv_pvn_force(sv, lp)
3076 if (SvREADONLY(sv) && curcop != &compiling)
3083 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3084 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3090 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3091 op_name[op->op_type]);
3095 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3100 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3101 SvGROW(sv, len + 1);
3102 Move(s,SvPVX(sv),len,char);
3107 SvPOK_on(sv); /* validate pointer */
3109 DEBUG_c(fprintf(stderr,"0x%lx 2pv(%s)\n",
3110 (unsigned long)sv,SvPVX(sv)));
3121 if (ob && SvOBJECT(sv))
3122 return HvNAME(SvSTASH(sv));
3124 switch (SvTYPE(sv)) {
3138 case SVt_PVLV: return "LVALUE";
3139 case SVt_PVAV: return "ARRAY";
3140 case SVt_PVHV: return "HASH";
3141 case SVt_PVCV: return "CODE";
3142 case SVt_PVGV: return "GLOB";
3143 case SVt_PVFM: return "FORMLINE";
3144 default: return "UNKNOWN";
3172 return strEQ(HvNAME(SvSTASH(sv)), name);
3176 newSVrv(rv, classname)
3186 sv_upgrade(rv, SVt_RV);
3187 SvRV(rv) = SvREFCNT_inc(sv);
3191 HV* stash = gv_stashpv(classname, TRUE);
3192 (void)sv_bless(rv, stash);
3198 sv_setref_pv(rv, classname, pv)
3204 sv_setsv(rv, &sv_undef);
3206 sv_setiv(newSVrv(rv,classname), (IV)pv);
3211 sv_setref_iv(rv, classname, iv)
3216 sv_setiv(newSVrv(rv,classname), iv);
3221 sv_setref_nv(rv, classname, nv)
3226 sv_setnv(newSVrv(rv,classname), nv);
3231 sv_setref_pvn(rv, classname, pv, n)
3237 sv_setpvn(newSVrv(rv,classname), pv, n);
3248 croak("Can't bless non-reference value");
3250 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3251 if (SvREADONLY(ref))
3253 if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
3258 (void)SvUPGRADE(ref, SVt_PVMG);
3259 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3263 if (Gv_AMG(stash)) {
3266 #endif /* OVERLOAD */
3275 assert(SvTYPE(sv) == SVt_PVGV);
3279 sv_unmagic(sv, '*');
3280 Safefree(GvNAME(sv));
3282 SvFLAGS(sv) &= ~SVTYPEMASK;
3283 SvFLAGS(sv) |= SVt_PVMG;
3294 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3297 sv_2mortal(rv); /* Schedule for freeing later */
3311 fprintf(stderr, "SV = 0\n");
3315 flags = SvFLAGS(sv);
3318 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
3319 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
3321 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
3322 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
3323 if (flags & SVs_PADMY) strcat(d, "PADMY,");
3324 if (flags & SVs_TEMP) strcat(d, "TEMP,");
3325 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
3326 if (flags & SVs_GMG) strcat(d, "GMG,");
3327 if (flags & SVs_SMG) strcat(d, "SMG,");
3328 if (flags & SVs_RMG) strcat(d, "RMG,");
3331 if (flags & SVf_IOK) strcat(d, "IOK,");
3332 if (flags & SVf_NOK) strcat(d, "NOK,");
3333 if (flags & SVf_POK) strcat(d, "POK,");
3334 if (flags & SVf_ROK) strcat(d, "ROK,");
3335 if (flags & SVf_OOK) strcat(d, "OOK,");
3336 if (flags & SVf_FAKE) strcat(d, "FAKE,");
3337 if (flags & SVf_READONLY) strcat(d, "READONLY,");
3340 if (flags & SVp_IOK) strcat(d, "pIOK,");
3341 if (flags & SVp_NOK) strcat(d, "pNOK,");
3342 if (flags & SVp_POK) strcat(d, "pPOK,");
3343 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
3350 fprintf(stderr, "SV = ");
3353 fprintf(stderr,"NULL%s\n", tmpbuf);
3356 fprintf(stderr,"IV%s\n", tmpbuf);
3359 fprintf(stderr,"NV%s\n", tmpbuf);
3362 fprintf(stderr,"RV%s\n", tmpbuf);
3365 fprintf(stderr,"PV%s\n", tmpbuf);
3368 fprintf(stderr,"PVIV%s\n", tmpbuf);
3371 fprintf(stderr,"PVNV%s\n", tmpbuf);
3374 fprintf(stderr,"PVBM%s\n", tmpbuf);
3377 fprintf(stderr,"PVMG%s\n", tmpbuf);
3380 fprintf(stderr,"PVLV%s\n", tmpbuf);
3383 fprintf(stderr,"PVAV%s\n", tmpbuf);
3386 fprintf(stderr,"PVHV%s\n", tmpbuf);
3389 fprintf(stderr,"PVCV%s\n", tmpbuf);
3392 fprintf(stderr,"PVGV%s\n", tmpbuf);
3395 fprintf(stderr,"PVFM%s\n", tmpbuf);
3398 fprintf(stderr,"PVIO%s\n", tmpbuf);
3401 fprintf(stderr,"UNKNOWN%s\n", tmpbuf);
3404 if (type >= SVt_PVIV || type == SVt_IV)
3405 fprintf(stderr, " IV = %ld\n", (long)SvIVX(sv));
3406 if (type >= SVt_PVNV || type == SVt_NV)
3407 fprintf(stderr, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
3409 fprintf(stderr, " RV = 0x%lx\n", (long)SvRV(sv));
3415 if (type <= SVt_PVLV) {
3417 fprintf(stderr, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
3418 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
3420 fprintf(stderr, " PV = 0\n");
3422 if (type >= SVt_PVMG) {
3424 fprintf(stderr, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
3427 fprintf(stderr, " STASH = %s\n", HvNAME(SvSTASH(sv)));
3431 fprintf(stderr, " TYPE = %c\n", LvTYPE(sv));
3432 fprintf(stderr, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
3433 fprintf(stderr, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
3434 fprintf(stderr, " TARG = 0x%lx\n", (long)LvTARG(sv));
3435 sv_dump(LvTARG(sv));
3438 fprintf(stderr, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
3439 fprintf(stderr, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
3440 fprintf(stderr, " FILL = %ld\n", (long)AvFILL(sv));
3441 fprintf(stderr, " MAX = %ld\n", (long)AvMAX(sv));
3442 fprintf(stderr, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
3443 flags = AvFLAGS(sv);
3445 if (flags & AVf_REAL) strcat(d, "REAL,");
3446 if (flags & AVf_REIFY) strcat(d, "REIFY,");
3447 if (flags & AVf_REUSED) strcat(d, "REUSED,");
3449 d[strlen(d)-1] = '\0';
3450 fprintf(stderr, " FLAGS = (%s)\n", d);
3453 fprintf(stderr, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
3454 fprintf(stderr, " KEYS = %ld\n", (long)HvKEYS(sv));
3455 fprintf(stderr, " FILL = %ld\n", (long)HvFILL(sv));
3456 fprintf(stderr, " MAX = %ld\n", (long)HvMAX(sv));
3457 fprintf(stderr, " RITER = %ld\n", (long)HvRITER(sv));
3458 fprintf(stderr, " EITER = 0x%lx\n",(long) HvEITER(sv));
3460 fprintf(stderr, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
3462 fprintf(stderr, " NAME = \"%s\"\n", HvNAME(sv));
3466 fprintf(stderr, " STASH = 0x%lx\n", (long)CvSTASH(sv));
3467 fprintf(stderr, " START = 0x%lx\n", (long)CvSTART(sv));
3468 fprintf(stderr, " ROOT = 0x%lx\n", (long)CvROOT(sv));
3469 fprintf(stderr, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
3470 fprintf(stderr, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
3471 fprintf(stderr, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
3472 fprintf(stderr, " DEPTH = %ld\n", (long)CvDEPTH(sv));
3473 fprintf(stderr, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
3474 fprintf(stderr, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
3475 if (type == SVt_PVFM)
3476 fprintf(stderr, " LINES = %ld\n", (long)FmLINES(sv));
3479 fprintf(stderr, " NAME = %s\n", GvNAME(sv));
3480 fprintf(stderr, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
3481 fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
3482 fprintf(stderr, " GP = 0x%lx\n", (long)GvGP(sv));
3483 fprintf(stderr, " SV = 0x%lx\n", (long)GvSV(sv));
3484 fprintf(stderr, " REFCNT = %ld\n", (long)GvREFCNT(sv));
3485 fprintf(stderr, " IO = 0x%lx\n", (long)GvIOp(sv));
3486 fprintf(stderr, " FORM = 0x%lx\n", (long)GvFORM(sv));
3487 fprintf(stderr, " AV = 0x%lx\n", (long)GvAV(sv));
3488 fprintf(stderr, " HV = 0x%lx\n", (long)GvHV(sv));
3489 fprintf(stderr, " CV = 0x%lx\n", (long)GvCV(sv));
3490 fprintf(stderr, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
3491 fprintf(stderr, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
3492 fprintf(stderr, " LINE = %ld\n", (long)GvLINE(sv));
3493 fprintf(stderr, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
3494 fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
3495 fprintf(stderr, " EGV = 0x%lx\n", (long)GvEGV(sv));
3498 fprintf(stderr, " IFP = 0x%lx\n", (long)IoIFP(sv));
3499 fprintf(stderr, " OFP = 0x%lx\n", (long)IoOFP(sv));
3500 fprintf(stderr, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
3501 fprintf(stderr, " LINES = %ld\n", (long)IoLINES(sv));
3502 fprintf(stderr, " PAGE = %ld\n", (long)IoPAGE(sv));
3503 fprintf(stderr, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
3504 fprintf(stderr, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
3505 fprintf(stderr, " TOP_NAME = %s\n", IoTOP_NAME(sv));
3506 fprintf(stderr, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
3507 fprintf(stderr, " FMT_NAME = %s\n", IoFMT_NAME(sv));
3508 fprintf(stderr, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
3509 fprintf(stderr, " BOTTOM_NAME = %s\n", IoBOTTOM_NAME(sv));
3510 fprintf(stderr, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
3511 fprintf(stderr, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
3512 fprintf(stderr, " TYPE = %c\n", IoTYPE(sv));
3513 fprintf(stderr, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
3532 switch (SvTYPE(sv)) {
3540 croak("Bad filehandle: %s", GvNAME(gv));
3544 croak(no_usym, "filehandle");
3546 return sv_2io(SvRV(sv));
3547 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3553 croak("Bad filehandle: %s", SvPV(sv,na));