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))
81 sv_root = (SV*)SvANY(sv); \
93 sv_root = (SV*)SvANY(sv);
105 SvANY(p) = (void *)sv_root; \
119 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
121 svend = &sva[SvREFCNT(sva)];
122 if (p >= sv && p < svend)
126 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
130 SvANY(p) = (void *) sv_root;
136 SvANY(p) = (void *)sv_root; \
143 sv_add_arena(ptr, size, flags)
151 Zero(sva, size, char);
153 /* The first SV in an arena isn't an SV. */
154 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
155 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
156 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
161 svend = &sva[SvREFCNT(sva) - 1];
164 SvANY(sv) = (void *)(SV*)(sv + 1);
165 SvFLAGS(sv) = SVTYPEMASK;
169 SvFLAGS(sv) = SVTYPEMASK;
176 sv_add_arena(nice_chunk, nice_chunk_size, 0);
180 sv_add_arena(safemalloc(1008), 1008, 0);
192 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
194 svend = &sva[SvREFCNT(sva)];
196 if (SvTYPE(sv) != SVTYPEMASK) {
197 fprintf(stderr, "****\n");
213 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
215 svend = &sva[SvREFCNT(sva)];
217 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
218 DEBUG_D((fprintf(stderr, "Cleaning object ref:\n "),
224 /* XXX Might want to check arrays, etc. */
237 for (sva = sv_arenaroot; sva; sva = (SV*) SvANY(sva)) {
239 svend = &sva[SvREFCNT(sva)];
241 if (SvTYPE(sv) != SVTYPEMASK) {
242 DEBUG_D((fprintf(stderr, "Cleaning loops:\n "), sv_dump(sv));)
243 SvFLAGS(sv) |= SVf_BREAK;
257 /* Free arenas here, but be careful about fake ones. (We assume
258 contiguity of the fake ones with the corresponding real ones.) */
260 for (sva = sv_arenaroot; sva; sva = svanext) {
261 svanext = (SV*) SvANY(sva);
262 while (svanext && SvFAKE(svanext))
263 svanext = (SV*) SvANY(svanext);
277 * See comment in more_xiv() -- RAM.
279 xiv_root = (IV**)*xiv;
280 return (XPVIV*)((char*)xiv - sizeof(XPV));
289 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
290 *xiv = (IV *)xiv_root;
298 register IV** xivend;
299 XPV* ptr = (XPV*)safemalloc(1008);
300 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
301 xiv_arenaroot = ptr; /* to keep Purify happy */
304 xivend = &xiv[1008 / sizeof(IV *) - 1];
305 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
307 while (xiv < xivend) {
308 *xiv = (IV *)(xiv + 1);
321 xnv_root = *(double**)xnv;
322 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
331 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
332 *(double**)xnv = xnv_root;
339 register double* xnv;
340 register double* xnvend;
341 xnv = (double*)safemalloc(1008);
342 xnvend = &xnv[1008 / sizeof(double) - 1];
343 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
345 while (xnv < xnvend) {
346 *(double**)xnv = (double*)(xnv + 1);
359 xrv_root = (XRV*)xrv->xrv_rv;
369 p->xrv_rv = (SV*)xrv_root;
377 register XRV* xrvend;
378 xrv_root = (XRV*)safemalloc(1008);
380 xrvend = &xrv[1008 / sizeof(XRV) - 1];
381 while (xrv < xrvend) {
382 xrv->xrv_rv = (SV*)(xrv + 1);
395 xpv_root = (XPV*)xpv->xpv_pv;
405 p->xpv_pv = (char*)xpv_root;
413 register XPV* xpvend;
414 xpv_root = (XPV*)safemalloc(1008);
416 xpvend = &xpv[1008 / sizeof(XPV) - 1];
417 while (xpv < xpvend) {
418 xpv->xpv_pv = (char*)(xpv + 1);
426 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
427 #define del_XIV(p) free((char*)p)
429 #define new_XIV() (void*)new_xiv()
430 #define del_XIV(p) del_xiv(p)
434 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
435 #define del_XNV(p) free((char*)p)
437 #define new_XNV() (void*)new_xnv()
438 #define del_XNV(p) del_xnv(p)
442 #define new_XRV() (void*)safemalloc(sizeof(XRV))
443 #define del_XRV(p) free((char*)p)
445 #define new_XRV() (void*)new_xrv()
446 #define del_XRV(p) del_xrv(p)
450 #define new_XPV() (void*)safemalloc(sizeof(XPV))
451 #define del_XPV(p) free((char*)p)
453 #define new_XPV() (void*)new_xpv()
454 #define del_XPV(p) del_xpv(p)
457 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
458 #define del_XPVIV(p) free((char*)p)
460 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
461 #define del_XPVNV(p) free((char*)p)
463 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
464 #define del_XPVMG(p) free((char*)p)
466 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
467 #define del_XPVLV(p) free((char*)p)
469 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
470 #define del_XPVAV(p) free((char*)p)
472 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
473 #define del_XPVHV(p) free((char*)p)
475 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
476 #define del_XPVCV(p) free((char*)p)
478 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
479 #define del_XPVGV(p) free((char*)p)
481 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
482 #define del_XPVBM(p) free((char*)p)
484 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
485 #define del_XPVFM(p) free((char*)p)
487 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
488 #define del_XPVIO(p) free((char*)p)
503 if (SvTYPE(sv) == mt)
506 switch (SvTYPE(sv)) {
521 nv = (double)SvIVX(sv);
527 else if (mt < SVt_PVIV)
544 pv = (char*)SvRV(sv);
548 nv = (double)(unsigned long)pv;
565 else if (mt == SVt_NV)
577 del_XPVIV(SvANY(sv));
588 del_XPVNV(SvANY(sv));
598 del_XPVMG(SvANY(sv));
601 croak("Can't upgrade that kind of scalar");
606 croak("Can't upgrade to undef");
608 SvANY(sv) = new_XIV();
612 SvANY(sv) = new_XNV();
616 SvANY(sv) = new_XRV();
620 SvANY(sv) = new_XPV();
626 SvANY(sv) = new_XPVIV();
636 SvANY(sv) = new_XPVNV();
644 SvANY(sv) = new_XPVMG();
654 SvANY(sv) = new_XPVLV();
668 SvANY(sv) = new_XPVAV();
683 SvANY(sv) = new_XPVHV();
699 SvANY(sv) = new_XPVCV();
700 Zero(SvANY(sv), 1, XPVCV);
710 SvANY(sv) = new_XPVGV();
724 SvANY(sv) = new_XPVBM();
737 SvANY(sv) = new_XPVFM();
738 Zero(SvANY(sv), 1, XPVFM);
748 SvANY(sv) = new_XPVIO();
749 Zero(SvANY(sv), 1, XPVIO);
760 SvFLAGS(sv) &= ~SVTYPEMASK;
778 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
782 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
783 if (sv == &sv_undef) {
784 strcpy(t, "SV_UNDEF");
785 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
786 SVs_GMG|SVs_SMG|SVs_RMG)) &&
790 else if (sv == &sv_no) {
792 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
793 SVs_GMG|SVs_SMG|SVs_RMG)) &&
794 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
802 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
803 SVs_GMG|SVs_SMG|SVs_RMG)) &&
804 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
807 SvPVX(sv) && *SvPVX(sv) == '1' &&
814 else if (SvREFCNT(sv) == 0) {
820 if (t - tokenbuf + unref > 10) {
821 strcpy(tokenbuf + unref + 3,"...");
827 switch (SvTYPE(sv)) {
867 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
890 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
892 sprintf(t,"(\"%.127s\")",SvPVX(sv));
895 sprintf(t,"(%g)",SvNVX(sv));
897 sprintf(t,"(%ld)",(long)SvIVX(sv));
919 SvLEN(sv) += SvIVX(sv);
920 SvPVX(sv) -= SvIVX(sv);
922 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
924 SvFLAGS(sv) &= ~SVf_OOK;
934 unsigned long newlen;
940 if (newlen >= 0x10000) {
941 fprintf(stderr, "Allocation too large: %lx\n", newlen);
947 if (SvTYPE(sv) < SVt_PV) {
948 sv_upgrade(sv, SVt_PV);
951 else if (SvOOK(sv)) { /* pv is offset? */
954 if (newlen > SvLEN(sv))
955 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
959 if (newlen > SvLEN(sv)) { /* need more room? */
961 Renew(s,newlen,char);
963 New(703,s,newlen,char);
965 SvLEN_set(sv, newlen);
975 if (SvTHINKFIRST(sv)) {
976 if (SvREADONLY(sv) && curcop != &compiling)
981 switch (SvTYPE(sv)) {
983 sv_upgrade(sv, SVt_IV);
986 sv_upgrade(sv, SVt_PVNV);
990 sv_upgrade(sv, SVt_PVIV);
1004 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1005 op_name[op->op_type]);
1008 (void)SvIOK_only(sv); /* validate number */
1017 if (SvTHINKFIRST(sv)) {
1018 if (SvREADONLY(sv) && curcop != &compiling)
1023 switch (SvTYPE(sv)) {
1026 sv_upgrade(sv, SVt_NV);
1032 sv_upgrade(sv, SVt_PVNV);
1039 (void)SvOOK_off(sv);
1052 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1053 op_name[op->op_type]);
1056 (void)SvNOK_only(sv); /* validate number */
1069 for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
1071 if (ch & 128 && !isprint(ch)) {
1091 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1092 op_name[op->op_type]);
1094 warn("Argument \"%s\" isn't numeric", tmpbuf);
1103 if (SvGMAGICAL(sv)) {
1108 if (SvNVX(sv) < 0.0)
1109 return I_V(SvNVX(sv));
1111 return (IV) U_V(SvNVX(sv));
1113 if (SvPOKp(sv) && SvLEN(sv)) {
1114 if (dowarn && !looks_like_number(sv))
1116 return (IV)atol(SvPVX(sv));
1122 if (SvTHINKFIRST(sv)) {
1126 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1127 return SvIV(tmpstr);
1128 #endif /* OVERLOAD */
1129 return (IV)SvRV(sv);
1131 if (SvREADONLY(sv)) {
1133 if (SvNVX(sv) < 0.0)
1134 return I_V(SvNVX(sv));
1136 return (IV) U_V(SvNVX(sv));
1138 if (SvPOKp(sv) && SvLEN(sv)) {
1139 if (dowarn && !looks_like_number(sv))
1141 return (IV)atol(SvPVX(sv));
1148 switch (SvTYPE(sv)) {
1150 sv_upgrade(sv, SVt_IV);
1153 sv_upgrade(sv, SVt_PVIV);
1156 sv_upgrade(sv, SVt_PVNV);
1160 if (SvNVX(sv) < 0.0)
1161 SvIVX(sv) = I_V(SvNVX(sv));
1163 SvIVX(sv) = (IV) U_V(SvNVX(sv));
1165 else if (SvPOKp(sv) && SvLEN(sv)) {
1166 if (dowarn && !looks_like_number(sv))
1168 SvIVX(sv) = (IV)atol(SvPVX(sv));
1171 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1176 DEBUG_c(fprintf(stderr,"0x%lx 2iv(%ld)\n",
1177 (unsigned long)sv,(long)SvIVX(sv)));
1187 if (SvGMAGICAL(sv)) {
1191 if (SvPOKp(sv) && SvLEN(sv)) {
1192 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1194 return atof(SvPVX(sv));
1197 return (double)SvIVX(sv);
1202 if (SvTHINKFIRST(sv)) {
1206 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1207 return SvNV(tmpstr);
1208 #endif /* OVERLOAD */
1209 return (double)(unsigned long)SvRV(sv);
1211 if (SvREADONLY(sv)) {
1212 if (SvPOKp(sv) && SvLEN(sv)) {
1213 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1215 return atof(SvPVX(sv));
1218 return (double)SvIVX(sv);
1224 if (SvTYPE(sv) < SVt_NV) {
1225 if (SvTYPE(sv) == SVt_IV)
1226 sv_upgrade(sv, SVt_PVNV);
1228 sv_upgrade(sv, SVt_NV);
1229 DEBUG_c(fprintf(stderr,"0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1231 else if (SvTYPE(sv) < SVt_PVNV)
1232 sv_upgrade(sv, SVt_PVNV);
1234 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1236 SvNVX(sv) = (double)SvIVX(sv);
1238 else if (SvPOKp(sv) && SvLEN(sv)) {
1239 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1241 SvNVX(sv) = atof(SvPVX(sv));
1244 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1249 DEBUG_c(fprintf(stderr,"0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1265 if (SvGMAGICAL(sv)) {
1272 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1276 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1284 if (SvTHINKFIRST(sv)) {
1288 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1289 return SvPV(tmpstr,*lp);
1290 #endif /* OVERLOAD */
1295 switch (SvTYPE(sv)) {
1304 case SVt_PVMG: s = "SCALAR"; break;
1305 case SVt_PVLV: s = "LVALUE"; break;
1306 case SVt_PVAV: s = "ARRAY"; break;
1307 case SVt_PVHV: s = "HASH"; break;
1308 case SVt_PVCV: s = "CODE"; break;
1309 case SVt_PVGV: s = "GLOB"; break;
1310 case SVt_PVFM: s = "FORMATLINE"; break;
1311 case SVt_PVIO: s = "FILEHANDLE"; break;
1312 default: s = "UNKNOWN"; break;
1315 sprintf(tokenbuf, "%s=%s(0x%lx)",
1316 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1318 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1324 if (SvREADONLY(sv)) {
1326 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1330 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1339 if (!SvUPGRADE(sv, SVt_PV))
1342 if (SvTYPE(sv) < SVt_PVNV)
1343 sv_upgrade(sv, SVt_PVNV);
1346 olderrno = errno; /* some Xenix systems wipe out errno here */
1348 if (SvNVX(sv) == 0.0)
1349 (void)strcpy(s,"0");
1352 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1354 #ifdef FIXNEGATIVEZERO
1355 if (*s == '-' && s[1] == '0' && !s[2])
1364 else if (SvIOKp(sv)) {
1365 if (SvTYPE(sv) < SVt_PVIV)
1366 sv_upgrade(sv, SVt_PVIV);
1369 olderrno = errno; /* some Xenix systems wipe out errno here */
1370 (void)sprintf(s,"%ld",(long)SvIVX(sv));
1375 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1381 *lp = s - SvPVX(sv);
1384 DEBUG_c(fprintf(stderr,"0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1388 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1389 /* Sneaky stuff here */
1392 sv = sv_newmortal();
1393 *lp = strlen(tokenbuf);
1394 sv_setpvn(sv, tokenbuf, *lp);
1400 #ifdef FIXNEGATIVEZERO
1401 if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
1402 strcpy(tokenbuf,"0");
1404 (void)SvUPGRADE(sv, SVt_PV);
1405 len = *lp = strlen(tokenbuf);
1406 s = SvGROW(sv, len + 1);
1408 (void)strcpy(s, tokenbuf);
1409 /* NO SvPOK_on(sv) here! */
1414 /* This function is only called on magical items */
1428 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1429 return SvTRUE(tmpsv);
1431 #endif /* OVERLOAD */
1432 return SvRV(sv) != 0;
1436 if ((Xpv = (XPV*)SvANY(sv)) &&
1437 (*Xpv->xpv_pv > '0' ||
1439 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1446 return SvIVX(sv) != 0;
1449 return SvNVX(sv) != 0.0;
1456 /* Note: sv_setsv() should not be called with a source string that needs
1457 * to be reused, since it may destroy the source string if it is marked
1466 register U32 sflags;
1472 if (SvTHINKFIRST(dstr)) {
1473 if (SvREADONLY(dstr) && curcop != &compiling)
1480 stype = SvTYPE(sstr);
1481 dtype = SvTYPE(dstr);
1483 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1484 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1485 sv_setpvn(dstr, "", 0);
1486 (void)SvPOK_only(dstr);
1487 dtype = SvTYPE(dstr);
1492 #endif /* OVERLOAD */
1493 /* There's a lot of redundancy below but we're going for speed here */
1497 (void)SvOK_off(dstr);
1500 if (dtype <= SVt_PV) {
1502 sv_upgrade(dstr, SVt_IV);
1503 else if (dtype == SVt_NV)
1504 sv_upgrade(dstr, SVt_PVNV);
1505 else if (dtype <= SVt_PV)
1506 sv_upgrade(dstr, SVt_PVIV);
1510 if (dtype <= SVt_PVIV) {
1512 sv_upgrade(dstr, SVt_NV);
1513 else if (dtype == SVt_PVIV)
1514 sv_upgrade(dstr, SVt_PVNV);
1515 else if (dtype <= SVt_PV)
1516 sv_upgrade(dstr, SVt_PVNV);
1521 sv_upgrade(dstr, SVt_RV);
1522 else if (dtype == SVt_PVGV &&
1523 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1530 sv_upgrade(dstr, SVt_PV);
1533 if (dtype < SVt_PVIV)
1534 sv_upgrade(dstr, SVt_PVIV);
1537 if (dtype < SVt_PVNV)
1538 sv_upgrade(dstr, SVt_PVNV);
1542 sv_upgrade(dstr, SVt_PVNV);
1550 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1551 op_name[op->op_type]);
1553 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1557 if (dtype <= SVt_PVGV) {
1559 if (dtype == SVt_PVGV)
1560 GvFLAGS(sstr) |= GVf_IMPORTED;
1562 char *name = GvNAME(sstr);
1563 STRLEN len = GvNAMELEN(sstr);
1564 sv_upgrade(dstr, SVt_PVGV);
1565 sv_magic(dstr, dstr, '*', name, len);
1566 GvSTASH(dstr) = GvSTASH(sstr);
1567 GvNAME(dstr) = savepvn(name, len);
1568 GvNAMELEN(dstr) = len;
1569 SvFAKE_on(dstr); /* can coerce to non-glob */
1571 (void)SvOK_off(dstr);
1574 GvGP(dstr) = gp_ref(GvGP(sstr));
1576 GvFLAGS(dstr) &= ~GVf_INTRO; /* one-shot flag */
1584 sv_upgrade(dstr, stype);
1585 if (SvGMAGICAL(sstr))
1589 sflags = SvFLAGS(sstr);
1591 if (sflags & SVf_ROK) {
1592 if (dtype >= SVt_PV) {
1593 if (dtype == SVt_PVGV) {
1594 SV *sref = SvREFCNT_inc(SvRV(sstr));
1596 int intro = GvFLAGS(dstr) & GVf_INTRO;
1600 GvGP(dstr)->gp_refcnt--;
1601 Newz(602,gp, 1, GP);
1604 GvSV(dstr) = NEWSV(72,0);
1605 GvLINE(dstr) = curcop->cop_line;
1607 GvFLAGS(dstr) &= ~GVf_INTRO; /* one-shot flag */
1610 switch (SvTYPE(sref)) {
1613 SAVESPTR(GvAV(dstr));
1615 dref = (SV*)GvAV(dstr);
1616 GvAV(dstr) = (AV*)sref;
1620 SAVESPTR(GvHV(dstr));
1622 dref = (SV*)GvHV(dstr);
1623 GvHV(dstr) = (HV*)sref;
1627 SAVESPTR(GvCV(dstr));
1629 CV* cv = GvCV(dstr);
1632 if (dowarn && sref != dref &&
1633 !GvCVGEN((GV*)dstr) &&
1634 (CvROOT(cv) || CvXSUB(cv)) )
1635 warn("Subroutine %s redefined",
1636 GvENAME((GV*)dstr));
1640 GvCV(dstr) = (CV*)sref;
1644 SAVESPTR(GvIOp(dstr));
1646 dref = (SV*)GvIOp(dstr);
1647 GvIOp(dstr) = (IO*)sref;
1651 SAVESPTR(GvSV(dstr));
1653 dref = (SV*)GvSV(dstr);
1657 if (curcop->cop_stash != GvSTASH(dstr))
1658 GvFLAGS(dstr) |= GVf_IMPORTED; /* crude */
1667 Safefree(SvPVX(dstr));
1668 SvLEN(dstr)=SvCUR(dstr)=0;
1671 (void)SvOK_off(dstr);
1672 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1674 if (sflags & SVp_NOK) {
1676 SvNVX(dstr) = SvNVX(sstr);
1678 if (sflags & SVp_IOK) {
1679 (void)SvIOK_on(dstr);
1680 SvIVX(dstr) = SvIVX(sstr);
1683 if (SvAMAGIC(sstr)) {
1686 #endif /* OVERLOAD */
1688 else if (sflags & SVp_POK) {
1691 * Check to see if we can just swipe the string. If so, it's a
1692 * possible small lose on short strings, but a big win on long ones.
1693 * It might even be a win on short strings if SvPVX(dstr)
1694 * has to be allocated and SvPVX(sstr) has to be freed.
1697 if (SvTEMP(sstr)) { /* slated for free anyway? */
1698 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
1699 (void)SvOOK_off(dstr);
1700 Safefree(SvPVX(dstr));
1702 SvPV_set(dstr, SvPVX(sstr));
1703 SvLEN_set(dstr, SvLEN(sstr));
1704 SvCUR_set(dstr, SvCUR(sstr));
1705 (void)SvPOK_only(dstr);
1707 SvPV_set(sstr, Nullch);
1709 SvPOK_off(sstr); /* wipe out any weird flags */
1710 SvPVX(sstr) = 0; /* so sstr frees uneventfully */
1712 else { /* have to copy actual string */
1713 STRLEN len = SvCUR(sstr);
1715 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1716 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1717 SvCUR_set(dstr, len);
1718 *SvEND(dstr) = '\0';
1719 (void)SvPOK_only(dstr);
1722 if (sflags & SVp_NOK) {
1724 SvNVX(dstr) = SvNVX(sstr);
1726 if (sflags & SVp_IOK) {
1727 (void)SvIOK_on(dstr);
1728 SvIVX(dstr) = SvIVX(sstr);
1731 else if (sflags & SVp_NOK) {
1732 SvNVX(dstr) = SvNVX(sstr);
1733 (void)SvNOK_only(dstr);
1735 (void)SvIOK_on(dstr);
1736 SvIVX(dstr) = SvIVX(sstr);
1739 else if (sflags & SVp_IOK) {
1740 (void)SvIOK_only(dstr);
1741 SvIVX(dstr) = SvIVX(sstr);
1744 (void)SvOK_off(dstr);
1750 sv_setpvn(sv,ptr,len)
1753 register STRLEN len;
1756 if (SvTHINKFIRST(sv)) {
1757 if (SvREADONLY(sv) && curcop != &compiling)
1766 if (SvTYPE(sv) >= SVt_PV) {
1767 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1770 else if (!sv_upgrade(sv, SVt_PV))
1772 SvGROW(sv, len + 1);
1773 Move(ptr,SvPVX(sv),len,char);
1776 (void)SvPOK_only(sv); /* validate pointer */
1785 register STRLEN len;
1787 if (SvTHINKFIRST(sv)) {
1788 if (SvREADONLY(sv) && curcop != &compiling)
1798 if (SvTYPE(sv) >= SVt_PV) {
1799 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
1802 else if (!sv_upgrade(sv, SVt_PV))
1804 SvGROW(sv, len + 1);
1805 Move(ptr,SvPVX(sv),len+1,char);
1807 (void)SvPOK_only(sv); /* validate pointer */
1812 sv_usepvn(sv,ptr,len)
1815 register STRLEN len;
1817 if (SvTHINKFIRST(sv)) {
1818 if (SvREADONLY(sv) && curcop != &compiling)
1823 if (!SvUPGRADE(sv, SVt_PV))
1830 Safefree(SvPVX(sv));
1831 Renew(ptr, len+1, char);
1834 SvLEN_set(sv, len+1);
1836 (void)SvPOK_only(sv); /* validate pointer */
1841 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1845 register STRLEN delta;
1847 if (!ptr || !SvPOKp(sv))
1849 if (SvTHINKFIRST(sv)) {
1850 if (SvREADONLY(sv) && curcop != &compiling)
1855 if (SvTYPE(sv) < SVt_PVIV)
1856 sv_upgrade(sv,SVt_PVIV);
1860 SvFLAGS(sv) |= SVf_OOK;
1862 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1863 delta = ptr - SvPVX(sv);
1871 sv_catpvn(sv,ptr,len)
1874 register STRLEN len;
1879 junk = SvPV_force(sv, tlen);
1880 SvGROW(sv, tlen + len + 1);
1883 Move(ptr,SvPVX(sv)+tlen,len,char);
1886 (void)SvPOK_only(sv); /* validate pointer */
1899 if (s = SvPV(sstr, len))
1900 sv_catpvn(dstr,s,len);
1908 register STRLEN len;
1914 junk = SvPV_force(sv, tlen);
1916 SvGROW(sv, tlen + len + 1);
1919 Move(ptr,SvPVX(sv)+tlen,len+1,char);
1921 (void)SvPOK_only(sv); /* validate pointer */
1941 sv_upgrade(sv, SVt_PV);
1942 SvGROW(sv, len + 1);
1948 sv_magic(sv, obj, how, name, namlen)
1957 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", how))
1959 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
1960 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
1967 if (!SvUPGRADE(sv, SVt_PVMG))
1970 Newz(702,mg, 1, MAGIC);
1971 mg->mg_moremagic = SvMAGIC(sv);
1974 if (!obj || obj == sv || how == '#')
1977 mg->mg_obj = SvREFCNT_inc(obj);
1978 mg->mg_flags |= MGf_REFCOUNTED;
1981 mg->mg_len = namlen;
1982 if (name && namlen >= 0)
1983 mg->mg_ptr = savepvn(name, namlen);
1986 mg->mg_virtual = &vtbl_sv;
1990 mg->mg_virtual = &vtbl_amagic;
1993 mg->mg_virtual = &vtbl_amagicelem;
1998 #endif /* OVERLOAD */
2000 mg->mg_virtual = &vtbl_bm;
2003 mg->mg_virtual = &vtbl_env;
2006 mg->mg_virtual = &vtbl_envelem;
2009 mg->mg_virtual = &vtbl_mglob;
2012 mg->mg_virtual = &vtbl_isa;
2015 mg->mg_virtual = &vtbl_isaelem;
2022 mg->mg_virtual = &vtbl_dbline;
2025 mg->mg_virtual = &vtbl_pack;
2029 mg->mg_virtual = &vtbl_packelem;
2032 mg->mg_virtual = &vtbl_sig;
2035 mg->mg_virtual = &vtbl_sigelem;
2038 mg->mg_virtual = &vtbl_taint;
2042 mg->mg_virtual = &vtbl_uvar;
2045 mg->mg_virtual = &vtbl_vec;
2048 mg->mg_virtual = &vtbl_substr;
2051 mg->mg_virtual = &vtbl_glob;
2054 mg->mg_virtual = &vtbl_arylen;
2057 mg->mg_virtual = &vtbl_pos;
2059 case '~': /* Reserved for use by extensions not perl internals. */
2060 /* Useful for attaching extension internal data to perl vars. */
2061 /* Note that multiple extensions may clash if magical scalars */
2062 /* etc holding private data from one are passed to another. */
2066 croak("Don't know how to handle magic of type '%c'", how);
2070 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2074 sv_unmagic(sv, type)
2080 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2083 for (mg = *mgp; mg; mg = *mgp) {
2084 if (mg->mg_type == type) {
2085 MGVTBL* vtbl = mg->mg_virtual;
2086 *mgp = mg->mg_moremagic;
2087 if (vtbl && vtbl->svt_free)
2088 (*vtbl->svt_free)(sv, mg);
2089 if (mg->mg_ptr && mg->mg_type != 'g')
2090 Safefree(mg->mg_ptr);
2091 if (mg->mg_flags & MGf_REFCOUNTED)
2092 SvREFCNT_dec(mg->mg_obj);
2096 mgp = &mg->mg_moremagic;
2100 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2107 sv_insert(bigstr,offset,len,little,littlelen)
2116 register char *midend;
2117 register char *bigend;
2121 croak("Can't modify non-existent substring");
2122 SvPV_force(bigstr, na);
2124 i = littlelen - len;
2125 if (i > 0) { /* string might grow */
2126 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2127 mid = big + offset + len;
2128 midend = bigend = big + SvCUR(bigstr);
2131 while (midend > mid) /* shove everything down */
2132 *--bigend = *--midend;
2133 Move(little,big+offset,littlelen,char);
2139 Move(little,SvPVX(bigstr)+offset,len,char);
2144 big = SvPVX(bigstr);
2147 bigend = big + SvCUR(bigstr);
2149 if (midend > bigend)
2150 croak("panic: sv_insert");
2152 if (mid - big > bigend - midend) { /* faster to shorten from end */
2154 Move(little, mid, littlelen,char);
2157 i = bigend - midend;
2159 Move(midend, mid, i,char);
2163 SvCUR_set(bigstr, mid - big);
2166 else if (i = mid - big) { /* faster from front */
2167 midend -= littlelen;
2169 sv_chop(bigstr,midend-i);
2174 Move(little, mid, littlelen,char);
2176 else if (littlelen) {
2177 midend -= littlelen;
2178 sv_chop(bigstr,midend);
2179 Move(little,midend,littlelen,char);
2182 sv_chop(bigstr,midend);
2187 /* make sv point to what nstr did */
2194 U32 refcnt = SvREFCNT(sv);
2195 if (SvTHINKFIRST(sv)) {
2196 if (SvREADONLY(sv) && curcop != &compiling)
2201 if (SvREFCNT(nsv) != 1)
2202 warn("Reference miscount in sv_replace()");
2203 if (SvMAGICAL(sv)) {
2207 sv_upgrade(nsv, SVt_PVMG);
2208 SvMAGIC(nsv) = SvMAGIC(sv);
2209 SvFLAGS(nsv) |= SvMAGICAL(sv);
2215 StructCopy(nsv,sv,SV);
2216 SvREFCNT(sv) = refcnt;
2225 assert(SvREFCNT(sv) == 0);
2231 if (defstash) { /* Still have a symbol table? */
2232 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2235 SAVEFREESV(SvSTASH(sv));
2236 if (destructor && GvCV(destructor)) {
2240 sv_upgrade(&ref, SVt_RV);
2241 SAVEI32(SvREFCNT(sv));
2242 SvRV(&ref) = SvREFCNT_inc(sv);
2249 perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
2250 del_XRV(SvANY(&ref));
2255 SvREFCNT_dec(SvSTASH(sv));
2257 SvOBJECT_off(sv); /* Curse the object. */
2258 if (SvTYPE(sv) != SVt_PVIO)
2259 --sv_objcount; /* XXX Might want something more general */
2262 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2264 switch (SvTYPE(sv)) {
2267 Safefree(IoTOP_NAME(sv));
2268 Safefree(IoFMT_NAME(sv));
2269 Safefree(IoBOTTOM_NAME(sv));
2285 Safefree(GvNAME(sv));
2292 (void)SvOOK_off(sv);
2297 SvREFCNT_dec(SvRV(sv));
2299 Safefree(SvPVX(sv));
2309 switch (SvTYPE(sv)) {
2325 del_XPVIV(SvANY(sv));
2328 del_XPVNV(SvANY(sv));
2331 del_XPVMG(SvANY(sv));
2334 del_XPVLV(SvANY(sv));
2337 del_XPVAV(SvANY(sv));
2340 del_XPVHV(SvANY(sv));
2343 del_XPVCV(SvANY(sv));
2346 del_XPVGV(SvANY(sv));
2349 del_XPVBM(SvANY(sv));
2352 del_XPVFM(SvANY(sv));
2355 del_XPVIO(SvANY(sv));
2358 SvFLAGS(sv) &= SVf_BREAK;
2359 SvFLAGS(sv) |= SVTYPEMASK;
2377 if (SvREADONLY(sv)) {
2378 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2381 if (SvREFCNT(sv) == 0) {
2382 if (SvFLAGS(sv) & SVf_BREAK)
2384 warn("Attempt to free unreferenced scalar");
2387 if (--SvREFCNT(sv) > 0)
2391 warn("Attempt to free temp prematurely");
2412 junk = SvPV(sv, len);
2431 pv1 = SvPV(str1, cur1);
2436 pv2 = SvPV(str2, cur2);
2441 return !bcmp(pv1, pv2, cur1);
2460 pv1 = SvPV(str1, cur1);
2467 pv2 = SvPV(str2, cur2);
2470 return cur2 ? -1 : 0;
2476 if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
2477 return retval < 0 ? -1 : 1;
2482 else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
2483 return retval < 0 ? -1 : 1;
2484 else if (cur1 == cur2)
2491 sv_gets(sv,fp,append)
2498 register STDCHAR rslast;
2499 register STDCHAR *bp;
2505 * We're going to steal some values from the stdio struct
2506 * and put EVERYTHING in the innermost loop into registers.
2508 register STDCHAR *ptr;
2513 if (SvTHINKFIRST(sv)) {
2514 if (SvREADONLY(sv) && curcop != &compiling)
2519 if (!SvUPGRADE(sv, SVt_PV))
2526 else if (RsPARA(rs)) {
2531 rsptr = SvPV(rs, rslen);
2532 rslast = rslen ? rsptr[rslen - 1] : '\0';
2534 if (RsPARA(rs)) { /* have to do this both before and after */
2535 do { /* to make sure file boundaries work right */
2550 /* Here is some breathtakingly efficient cheating */
2552 cnt = FILE_cnt(fp); /* get count into register */
2553 (void)SvPOK_only(sv); /* validate pointer */
2554 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2555 if (cnt > 80 && SvLEN(sv) > append) {
2556 shortbuffered = cnt - SvLEN(sv) + append + 1;
2557 cnt -= shortbuffered;
2561 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2566 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
2572 while (--cnt >= 0) { /* this | eat */
2573 if ((*bp++ = *ptr++) == rslast) /* really | dust */
2574 goto thats_all_folks; /* screams | sed :-) */
2578 memcpy((char*)bp, (char*)ptr, cnt); /* this | eat */
2579 bp += cnt; /* screams | dust */
2580 ptr += cnt; /* louder | sed :-) */
2584 if (shortbuffered) { /* oh well, must extend */
2585 cnt = shortbuffered;
2587 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2589 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2590 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2594 FILE_cnt(fp) = cnt; /* deregisterize cnt and ptr */
2596 i = _filbuf(fp); /* get more characters */
2598 ptr = FILE_ptr(fp); /* reregisterize cnt and ptr */
2600 if (i == EOF) /* all done for ever? */
2601 goto thats_really_all_folks;
2603 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
2605 SvGROW(sv, bpx + cnt + 2);
2606 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
2608 *bp++ = i; /* store character from _filbuf */
2610 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
2611 goto thats_all_folks;
2615 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
2616 bcmp((char*)bp - rslen, rsptr, rslen))
2617 goto screamer; /* go back to the fray */
2618 thats_really_all_folks:
2620 cnt += shortbuffered;
2621 FILE_cnt(fp) = cnt; /* put these back or we're in trouble */
2624 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
2626 #else /* SV_FAST_GETS */
2628 /*The big, slow, and stupid way */
2635 register STDCHAR *bpe = buf + sizeof(buf);
2637 while ((i = getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
2638 ; /* keep reading */
2642 cnt = fread((char*)buf, 1, sizeof(buf), fp);
2643 i = cnt ? (U8)buf[cnt - 1] : EOF;
2647 sv_catpvn(sv, buf, cnt);
2649 sv_setpvn(sv, buf, cnt);
2651 if (i != EOF && /* joy */
2653 SvCUR(sv) < rslen ||
2654 bcmp(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
2661 #endif /* SV_FAST_GETS */
2663 if (RsPARA(rs)) { /* have to do this both before and after */
2664 while (i != EOF) { /* to make sure file boundaries work right */
2673 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
2685 if (SvTHINKFIRST(sv)) {
2686 if (SvREADONLY(sv) && curcop != &compiling)
2690 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
2691 #endif /* OVERLOAD */
2697 flags = SvFLAGS(sv);
2698 if (flags & SVp_IOK) {
2700 (void)SvIOK_only(sv);
2703 if (flags & SVp_NOK) {
2705 (void)SvNOK_only(sv);
2708 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2709 if ((flags & SVTYPEMASK) < SVt_PVNV)
2710 sv_upgrade(sv, SVt_NV);
2712 (void)SvNOK_only(sv);
2716 while (isALPHA(*d)) d++;
2717 while (isDIGIT(*d)) d++;
2719 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2723 while (d >= SvPVX(sv)) {
2733 *(d--) -= 'z' - 'a' + 1;
2736 /* oh,oh, the number grew */
2737 SvGROW(sv, SvCUR(sv) + 2);
2739 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2755 if (SvTHINKFIRST(sv)) {
2756 if (SvREADONLY(sv) && curcop != &compiling)
2760 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
2761 #endif /* OVERLOAD */
2767 flags = SvFLAGS(sv);
2768 if (flags & SVp_IOK) {
2770 (void)SvIOK_only(sv);
2773 if (flags & SVp_NOK) {
2775 (void)SvNOK_only(sv);
2778 if (!(flags & SVp_POK)) {
2779 if ((flags & SVTYPEMASK) < SVt_PVNV)
2780 sv_upgrade(sv, SVt_NV);
2782 (void)SvNOK_only(sv);
2785 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2788 /* Make a string that will exist for the duration of the expression
2789 * evaluation. Actually, it may have to last longer than that, but
2790 * hopefully we won't free it until it has been assigned to a
2791 * permanent location. */
2797 Renew(tmps_stack, tmps_max, SV*);
2801 sv_mortalcopy(oldstr)
2810 sv_setsv(sv,oldstr);
2811 if (++tmps_ix >= tmps_max)
2813 tmps_stack[tmps_ix] = sv;
2826 SvFLAGS(sv) = SVs_TEMP;
2827 if (++tmps_ix >= tmps_max)
2829 tmps_stack[tmps_ix] = sv;
2833 /* same thing without the copying */
2841 if (SvREADONLY(sv) && curcop != &compiling)
2843 if (++tmps_ix >= tmps_max)
2845 tmps_stack[tmps_ix] = sv;
2863 sv_setpvn(sv,s,len);
2905 sv_upgrade(sv, SVt_RV);
2907 SvRV(sv) = SvREFCNT_inc(ref);
2912 /* make an exact duplicate of old */
2922 if (SvTYPE(old) == SVTYPEMASK) {
2923 warn("semi-panic: attempt to dup freed string");
2953 if (!*s) { /* reset ?? searches */
2954 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
2955 pm->op_pmflags &= ~PMf_USED;
2960 /* reset variables */
2962 if (!HvARRAY(stash))
2965 Zero(todo, 256, char);
2972 for ( ; i <= max; i++) {
2975 for (i = 0; i <= (I32) HvMAX(stash); i++) {
2976 for (entry = HvARRAY(stash)[i];
2978 entry = entry->hent_next) {
2979 if (!todo[(U8)*entry->hent_key])
2981 gv = (GV*)entry->hent_val;
2984 if (SvTYPE(sv) >= SVt_PV) {
2987 if (SvPVX(sv) != Nullch)
2994 if (HvNAME(GvHV(gv)))
2997 #ifndef VMS /* VMS has no environ array */
2999 environ[0] = Nullch;
3008 sv_2cv(sv, st, gvp, lref)
3018 return *gvp = Nullgv, Nullcv;
3019 switch (SvTYPE(sv)) {
3039 if (SvTYPE(cv) != SVt_PVCV)
3040 croak("Not a subroutine reference");
3048 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3054 if (lref && !GvCV(gv)) {
3057 tmpsv = NEWSV(704,0);
3058 gv_efullname(tmpsv, gv);
3059 newSUB(start_subparse(),
3060 newSVOP(OP_CONST, 0, tmpsv),
3065 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3082 if ((Xpv = (XPV*)SvANY(sv)) &&
3083 (*Xpv->xpv_pv > '0' ||
3085 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3092 return SvIVX(sv) != 0;
3095 return SvNVX(sv) != 0.0;
3097 return sv_2bool(sv);
3121 return (double)SvIVX(Sv);
3136 return sv_2pv(sv, lp);
3141 sv_pvn_force(sv, lp)
3147 if (SvREADONLY(sv) && curcop != &compiling)
3154 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3155 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3161 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3162 op_name[op->op_type]);
3166 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3171 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3172 SvGROW(sv, len + 1);
3173 Move(s,SvPVX(sv),len,char);
3178 SvPOK_on(sv); /* validate pointer */
3180 DEBUG_c(fprintf(stderr,"0x%lx 2pv(%s)\n",
3181 (unsigned long)sv,SvPVX(sv)));
3192 if (ob && SvOBJECT(sv))
3193 return HvNAME(SvSTASH(sv));
3195 switch (SvTYPE(sv)) {
3209 case SVt_PVLV: return "LVALUE";
3210 case SVt_PVAV: return "ARRAY";
3211 case SVt_PVHV: return "HASH";
3212 case SVt_PVCV: return "CODE";
3213 case SVt_PVGV: return "GLOB";
3214 case SVt_PVFM: return "FORMLINE";
3215 default: return "UNKNOWN";
3243 return strEQ(HvNAME(SvSTASH(sv)), name);
3247 newSVrv(rv, classname)
3257 sv_upgrade(rv, SVt_RV);
3258 SvRV(rv) = SvREFCNT_inc(sv);
3262 HV* stash = gv_stashpv(classname, TRUE);
3263 (void)sv_bless(rv, stash);
3269 sv_setref_pv(rv, classname, pv)
3275 sv_setsv(rv, &sv_undef);
3277 sv_setiv(newSVrv(rv,classname), (IV)pv);
3282 sv_setref_iv(rv, classname, iv)
3287 sv_setiv(newSVrv(rv,classname), iv);
3292 sv_setref_nv(rv, classname, nv)
3297 sv_setnv(newSVrv(rv,classname), nv);
3302 sv_setref_pvn(rv, classname, pv, n)
3308 sv_setpvn(newSVrv(rv,classname), pv, n);
3319 croak("Can't bless non-reference value");
3321 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3322 if (SvREADONLY(ref))
3324 if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
3329 (void)SvUPGRADE(ref, SVt_PVMG);
3330 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3334 if (Gv_AMG(stash)) {
3337 #endif /* OVERLOAD */
3346 assert(SvTYPE(sv) == SVt_PVGV);
3350 sv_unmagic(sv, '*');
3351 Safefree(GvNAME(sv));
3353 SvFLAGS(sv) &= ~SVTYPEMASK;
3354 SvFLAGS(sv) |= SVt_PVMG;
3365 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3368 sv_2mortal(rv); /* Schedule for freeing later */
3382 fprintf(stderr, "SV = 0\n");
3386 flags = SvFLAGS(sv);
3389 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
3390 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
3392 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
3393 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
3394 if (flags & SVs_PADMY) strcat(d, "PADMY,");
3395 if (flags & SVs_TEMP) strcat(d, "TEMP,");
3396 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
3397 if (flags & SVs_GMG) strcat(d, "GMG,");
3398 if (flags & SVs_SMG) strcat(d, "SMG,");
3399 if (flags & SVs_RMG) strcat(d, "RMG,");
3402 if (flags & SVf_IOK) strcat(d, "IOK,");
3403 if (flags & SVf_NOK) strcat(d, "NOK,");
3404 if (flags & SVf_POK) strcat(d, "POK,");
3405 if (flags & SVf_ROK) strcat(d, "ROK,");
3406 if (flags & SVf_OOK) strcat(d, "OOK,");
3407 if (flags & SVf_FAKE) strcat(d, "FAKE,");
3408 if (flags & SVf_READONLY) strcat(d, "READONLY,");
3411 if (flags & SVp_IOK) strcat(d, "pIOK,");
3412 if (flags & SVp_NOK) strcat(d, "pNOK,");
3413 if (flags & SVp_POK) strcat(d, "pPOK,");
3414 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
3421 fprintf(stderr, "SV = ");
3424 fprintf(stderr,"NULL%s\n", tmpbuf);
3427 fprintf(stderr,"IV%s\n", tmpbuf);
3430 fprintf(stderr,"NV%s\n", tmpbuf);
3433 fprintf(stderr,"RV%s\n", tmpbuf);
3436 fprintf(stderr,"PV%s\n", tmpbuf);
3439 fprintf(stderr,"PVIV%s\n", tmpbuf);
3442 fprintf(stderr,"PVNV%s\n", tmpbuf);
3445 fprintf(stderr,"PVBM%s\n", tmpbuf);
3448 fprintf(stderr,"PVMG%s\n", tmpbuf);
3451 fprintf(stderr,"PVLV%s\n", tmpbuf);
3454 fprintf(stderr,"PVAV%s\n", tmpbuf);
3457 fprintf(stderr,"PVHV%s\n", tmpbuf);
3460 fprintf(stderr,"PVCV%s\n", tmpbuf);
3463 fprintf(stderr,"PVGV%s\n", tmpbuf);
3466 fprintf(stderr,"PVFM%s\n", tmpbuf);
3469 fprintf(stderr,"PVIO%s\n", tmpbuf);
3472 fprintf(stderr,"UNKNOWN%s\n", tmpbuf);
3475 if (type >= SVt_PVIV || type == SVt_IV)
3476 fprintf(stderr, " IV = %ld\n", (long)SvIVX(sv));
3477 if (type >= SVt_PVNV || type == SVt_NV)
3478 fprintf(stderr, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
3480 fprintf(stderr, " RV = 0x%lx\n", (long)SvRV(sv));
3486 if (type <= SVt_PVLV) {
3488 fprintf(stderr, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
3489 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
3491 fprintf(stderr, " PV = 0\n");
3493 if (type >= SVt_PVMG) {
3495 fprintf(stderr, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
3498 fprintf(stderr, " STASH = %s\n", HvNAME(SvSTASH(sv)));
3502 fprintf(stderr, " TYPE = %c\n", LvTYPE(sv));
3503 fprintf(stderr, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
3504 fprintf(stderr, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
3505 fprintf(stderr, " TARG = 0x%lx\n", (long)LvTARG(sv));
3506 sv_dump(LvTARG(sv));
3509 fprintf(stderr, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
3510 fprintf(stderr, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
3511 fprintf(stderr, " FILL = %ld\n", (long)AvFILL(sv));
3512 fprintf(stderr, " MAX = %ld\n", (long)AvMAX(sv));
3513 fprintf(stderr, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
3514 flags = AvFLAGS(sv);
3516 if (flags & AVf_REAL) strcat(d, "REAL,");
3517 if (flags & AVf_REIFY) strcat(d, "REIFY,");
3518 if (flags & AVf_REUSED) strcat(d, "REUSED,");
3520 d[strlen(d)-1] = '\0';
3521 fprintf(stderr, " FLAGS = (%s)\n", d);
3524 fprintf(stderr, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
3525 fprintf(stderr, " KEYS = %ld\n", (long)HvKEYS(sv));
3526 fprintf(stderr, " FILL = %ld\n", (long)HvFILL(sv));
3527 fprintf(stderr, " MAX = %ld\n", (long)HvMAX(sv));
3528 fprintf(stderr, " RITER = %ld\n", (long)HvRITER(sv));
3529 fprintf(stderr, " EITER = 0x%lx\n",(long) HvEITER(sv));
3531 fprintf(stderr, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
3533 fprintf(stderr, " NAME = \"%s\"\n", HvNAME(sv));
3537 fprintf(stderr, " STASH = 0x%lx\n", (long)CvSTASH(sv));
3538 fprintf(stderr, " START = 0x%lx\n", (long)CvSTART(sv));
3539 fprintf(stderr, " ROOT = 0x%lx\n", (long)CvROOT(sv));
3540 fprintf(stderr, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
3541 fprintf(stderr, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
3542 fprintf(stderr, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
3543 fprintf(stderr, " DEPTH = %ld\n", (long)CvDEPTH(sv));
3544 fprintf(stderr, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
3545 fprintf(stderr, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
3546 if (type == SVt_PVFM)
3547 fprintf(stderr, " LINES = %ld\n", (long)FmLINES(sv));
3550 fprintf(stderr, " NAME = %s\n", GvNAME(sv));
3551 fprintf(stderr, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
3552 fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
3553 fprintf(stderr, " GP = 0x%lx\n", (long)GvGP(sv));
3554 fprintf(stderr, " SV = 0x%lx\n", (long)GvSV(sv));
3555 fprintf(stderr, " REFCNT = %ld\n", (long)GvREFCNT(sv));
3556 fprintf(stderr, " IO = 0x%lx\n", (long)GvIOp(sv));
3557 fprintf(stderr, " FORM = 0x%lx\n", (long)GvFORM(sv));
3558 fprintf(stderr, " AV = 0x%lx\n", (long)GvAV(sv));
3559 fprintf(stderr, " HV = 0x%lx\n", (long)GvHV(sv));
3560 fprintf(stderr, " CV = 0x%lx\n", (long)GvCV(sv));
3561 fprintf(stderr, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
3562 fprintf(stderr, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
3563 fprintf(stderr, " LINE = %ld\n", (long)GvLINE(sv));
3564 fprintf(stderr, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
3565 fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
3566 fprintf(stderr, " EGV = 0x%lx\n", (long)GvEGV(sv));
3569 fprintf(stderr, " IFP = 0x%lx\n", (long)IoIFP(sv));
3570 fprintf(stderr, " OFP = 0x%lx\n", (long)IoOFP(sv));
3571 fprintf(stderr, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
3572 fprintf(stderr, " LINES = %ld\n", (long)IoLINES(sv));
3573 fprintf(stderr, " PAGE = %ld\n", (long)IoPAGE(sv));
3574 fprintf(stderr, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
3575 fprintf(stderr, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
3576 fprintf(stderr, " TOP_NAME = %s\n", IoTOP_NAME(sv));
3577 fprintf(stderr, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
3578 fprintf(stderr, " FMT_NAME = %s\n", IoFMT_NAME(sv));
3579 fprintf(stderr, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
3580 fprintf(stderr, " BOTTOM_NAME = %s\n", IoBOTTOM_NAME(sv));
3581 fprintf(stderr, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
3582 fprintf(stderr, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
3583 fprintf(stderr, " TYPE = %c\n", IoTYPE(sv));
3584 fprintf(stderr, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
3603 switch (SvTYPE(sv)) {
3611 croak("Bad filehandle: %s", GvNAME(gv));
3615 croak(no_usym, "filehandle");
3617 return sv_2io(SvRV(sv));
3618 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3624 croak("Bad filehandle: %s", SvPV(sv,na));