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 * Then he heard Merry change the note, and up went the Horn-cry of Buckland,
14 * Awake! Awake! Fear, Fire, Foes! Awake!
33 TAINT_NOT; /* Each statement is presumed innocent */
34 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
43 if (op->op_private & OPpLVAL_INTRO)
44 PUSHs(save_scalar(cGVOP->op_gv));
46 PUSHs(GvSV(cGVOP->op_gv));
67 sv_setpvn(TARG,s,len);
75 XPUSHs((SV*)cGVOP->op_gv);
92 switch (elem ? *elem : '\0')
95 if (strEQ(elem, "ARRAY"))
99 if (strEQ(elem, "CODE"))
103 if (strEQ(elem, "FILEHANDLE"))
104 ref = (SV*)GvIOp(gv);
107 if (strEQ(elem, "GLOB"))
111 if (strEQ(elem, "HASH"))
115 if (strEQ(elem, "NAME"))
116 sv = newSVpv(GvNAME(gv), GvNAMELEN(gv));
119 if (strEQ(elem, "PACKAGE"))
120 sv = newSVpv(HvNAME(GvSTASH(gv)), 0);
123 if (strEQ(elem, "SCALAR"))
144 RETURNOP(cLOGOP->op_other);
153 if (op->op_private & OPpASSIGN_BACKWARDS) {
155 temp = left; left = right; right = temp;
157 if (tainting && tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) ||
158 !((mg = mg_find(left, 't')) && mg->mg_len & 1)))
162 SvSetSV(right, left);
172 RETURNOP(cCONDOP->op_true);
174 RETURNOP(cCONDOP->op_false);
180 TAINT_NOT; /* Each statement is presumed innocent */
181 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
183 oldsave = scopestack[scopestack_ix - 1];
184 LEAVE_SCOPE(oldsave);
190 dSP; tryAMAGICbinSET(seq,0);
193 SETs( sv_eq(left, right) ? &sv_yes : &sv_no );
200 dSP; dATARGET; tryAMAGICbin(concat,opASSIGN);
207 sv_setpvn(TARG,s,len);
209 else if (SvGMAGICAL(TARG))
211 else if (!SvOK(TARG)) {
212 s = SvPV_force(TARG, len);
213 sv_setpv(TARG, ""); /* Suppress warning. */
216 sv_catpvn(TARG,s,len);
226 if (op->op_flags & OPf_MOD) {
227 if (op->op_private & OPpLVAL_INTRO)
228 SAVECLEARSV(curpad[op->op_targ]);
229 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
230 provide_ref(op, curpad[op->op_targ]);
237 last_in_gv = (GV*)(*stack_sp--);
238 return do_readline();
243 dSP; tryAMAGICbinSET(eq,0);
246 SETs((TOPn == value) ? &sv_yes : &sv_no);
255 if (SvIVX(TOPs) == PERL_LONG_MAX) {
256 sv_setnv(TOPs, (double)(SvIVX(TOPs)) + 1.0 );
260 SvFLAGS(TOPs) &= ~(SVf_NOK|SVf_POK|SVp_NOK|SVp_POK);
276 RETURNOP(cLOGOP->op_other);
282 dSP; dATARGET; tryAMAGICbin(add,opASSIGN);
285 SETn( left + right );
293 AV *av = GvAV((GV*)cSVOP->op_sv);
294 SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD);
295 PUSHs(svp ? *svp : &sv_undef);
303 do_join(TARG, *MARK, MARK, SP);
316 /* Oversized hot code. */
320 dSP; dMARK; dORIGMARK;
325 if (op->op_flags & OPf_STACKED)
329 if (!(io = GvIO(gv))) {
331 SV* sv = sv_newmortal();
333 warn("Filehandle %s never opened", SvPV(sv,na));
336 SETERRNO(EBADF,RMS$_IFI);
339 else if (!(fp = IoOFP(io))) {
341 SV* sv = sv_newmortal();
344 warn("Filehandle %s opened only for input", SvPV(sv,na));
346 warn("print on closed filehandle %s", SvPV(sv,na));
348 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
355 if (!do_print(*MARK, fp))
359 if (PerlIO_write(fp, ofs, ofslen) == 0 || PerlIO_error(fp)) {
368 if (!do_print(*MARK, fp))
377 if (PerlIO_write(fp, ors, orslen) == 0 || PerlIO_error(fp))
380 if (IoFLAGS(io) & IOf_FLUSH)
381 if (PerlIO_flush(fp) == EOF)
404 if (SvTYPE(av) != SVt_PVAV)
405 DIE("Not an ARRAY reference");
406 if (op->op_private & OPpLVAL_INTRO)
407 av = (AV*)save_svref((SV**)sv);
408 if (op->op_flags & OPf_REF) {
414 if (SvTYPE(sv) == SVt_PVAV) {
416 if (op->op_flags & OPf_REF) {
424 if (SvTYPE(sv) != SVt_PVGV) {
427 if (SvGMAGICAL(sv)) {
433 if (op->op_flags & OPf_REF ||
434 op->op_private & HINT_STRICT_REFS)
435 DIE(no_usym, "an ARRAY");
436 if (GIMME == G_ARRAY)
441 if (op->op_private & HINT_STRICT_REFS)
442 DIE(no_symref, sym, "an ARRAY");
443 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
448 if (op->op_private & OPpLVAL_INTRO)
450 if (op->op_flags & OPf_REF) {
457 if (GIMME == G_ARRAY) {
458 I32 maxarg = AvFILL(av) + 1;
460 Copy(AvARRAY(av), SP+1, maxarg, SV*);
465 I32 maxarg = AvFILL(av) + 1;
481 if (SvTYPE(hv) != SVt_PVHV)
482 DIE("Not a HASH reference");
483 if (op->op_private & OPpLVAL_INTRO)
484 hv = (HV*)save_svref((SV**)sv);
485 if (op->op_flags & OPf_REF) {
491 if (SvTYPE(sv) == SVt_PVHV) {
493 if (op->op_flags & OPf_REF) {
501 if (SvTYPE(sv) != SVt_PVGV) {
504 if (SvGMAGICAL(sv)) {
510 if (op->op_flags & OPf_REF ||
511 op->op_private & HINT_STRICT_REFS)
512 DIE(no_usym, "a HASH");
513 if (GIMME == G_ARRAY) {
520 if (op->op_private & HINT_STRICT_REFS)
521 DIE(no_symref, sym, "a HASH");
522 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
527 if (op->op_private & OPpLVAL_INTRO)
529 if (op->op_flags & OPf_REF) {
536 if (GIMME == G_ARRAY) { /* array wanted */
543 sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1);
556 SV **lastlelem = stack_sp;
557 SV **lastrelem = stack_base + POPMARK;
558 SV **firstrelem = stack_base + POPMARK + 1;
559 SV **firstlelem = lastrelem + 1;
571 delaymagic = DM_DELAY; /* catch simultaneous items */
573 /* If there's a common identifier on both sides we have to take
574 * special care that assigning the identifier on the left doesn't
575 * clobber a value on the right that's used later in the list.
577 if (op->op_private & OPpASSIGN_COMMON) {
578 for (relem = firstrelem; relem <= lastrelem; relem++) {
581 *relem = sv_mortalcopy(sv);
589 while (lelem <= lastlelem) {
590 tainted = 0; /* Each item stands on its own, taintwise. */
592 switch (SvTYPE(sv)) {
595 magic = SvMAGICAL(ary) != 0;
599 while (relem <= lastrelem) { /* gobble up all the rest */
604 (void)av_store(ary,i++,sv);
614 magic = SvMAGICAL(hash) != 0;
617 while (relem < lastrelem) { /* gobble up all the rest */
622 sv = &sv_no, relem++;
623 tmpstr = NEWSV(29,0);
625 sv_setsv(tmpstr,*relem); /* value */
627 (void)hv_store_ent(hash,sv,tmpstr,0);
632 if (relem == lastrelem)
633 warn("Odd number of elements in hash list");
637 if (SvTHINKFIRST(sv)) {
638 if (SvREADONLY(sv) && curcop != &compiling) {
639 if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no)
641 if (relem <= lastrelem)
648 if (relem <= lastrelem) {
649 sv_setsv(sv, *relem);
653 sv_setsv(sv, &sv_undef);
658 if (delaymagic & ~DM_DELAY) {
659 if (delaymagic & DM_UID) {
661 (void)setresuid(uid,euid,(Uid_t)-1);
664 (void)setreuid(uid,euid);
667 if ((delaymagic & DM_UID) == DM_RUID) {
669 delaymagic &= ~DM_RUID;
671 # endif /* HAS_SETRUID */
673 if ((delaymagic & DM_UID) == DM_EUID) {
675 delaymagic &= ~DM_EUID;
677 # endif /* HAS_SETEUID */
678 if (delaymagic & DM_UID) {
680 DIE("No setreuid available");
683 # endif /* HAS_SETREUID */
684 #endif /* HAS_SETRESUID */
686 euid = (int)geteuid();
688 if (delaymagic & DM_GID) {
690 (void)setresgid(gid,egid,(Gid_t)-1);
693 (void)setregid(gid,egid);
696 if ((delaymagic & DM_GID) == DM_RGID) {
698 delaymagic &= ~DM_RGID;
700 # endif /* HAS_SETRGID */
702 if ((delaymagic & DM_GID) == DM_EGID) {
704 delaymagic &= ~DM_EGID;
706 # endif /* HAS_SETEGID */
707 if (delaymagic & DM_GID) {
709 DIE("No setregid available");
712 # endif /* HAS_SETREGID */
713 #endif /* HAS_SETRESGID */
715 egid = (int)getegid();
717 tainting |= (uid && (euid != uid || egid != gid));
720 if (GIMME == G_ARRAY) {
724 SP = firstrelem + (lastlelem - firstlelem);
731 SETi(lastrelem - firstrelem + 1);
739 register PMOP *pm = cPMOP;
746 register REGEXP *rx = pm->op_pmregexp;
750 I32 oldsave = savestack_ix;
752 if (op->op_flags & OPf_STACKED)
761 DIE("panic: do_match");
763 if (pm->op_pmflags & PMf_USED) {
764 if (gimme == G_ARRAY)
769 if (!rx->prelen && curpm) {
771 rx = pm->op_pmregexp;
774 if (global = pm->op_pmflags & PMf_GLOBAL) {
776 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
777 MAGIC* mg = mg_find(TARG, 'g');
778 if (mg && mg->mg_len >= 0) {
779 rx->endp[0] = rx->startp[0] = s + mg->mg_len;
780 minmatch = (mg->mg_flags & MGf_MINMATCH);
784 if (!rx->nparens && !global)
785 gimme = G_SCALAR; /* accidental array context? */
786 safebase = (gimme == G_ARRAY) || global;
787 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
789 multiline = pm->op_pmflags & PMf_MULTILINE;
793 if (global && rx->startp[0]) {
797 minmatch = (s == rx->startp[0]);
799 if (pm->op_pmshort) {
800 if (pm->op_pmflags & PMf_SCANFIRST) {
801 if (SvSCREAM(TARG)) {
802 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
804 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
806 else if (pm->op_pmflags & PMf_ALL)
809 else if (!(s = fbm_instr((unsigned char*)s,
810 (unsigned char*)strend, pm->op_pmshort)))
812 else if (pm->op_pmflags & PMf_ALL)
814 if (s && rx->regback >= 0) {
815 ++BmUSEFUL(pm->op_pmshort);
823 else if (!multiline) {
824 if (*SvPVX(pm->op_pmshort) != *s ||
825 bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
826 if (pm->op_pmflags & PMf_FOLD) {
827 if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
834 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
835 SvREFCNT_dec(pm->op_pmshort);
836 pm->op_pmshort = Nullsv; /* opt is being useless */
839 if (pregexec(rx, s, strend, truebase, minmatch,
840 SvSCREAM(TARG) ? TARG : Nullsv,
843 if (pm->op_pmflags & PMf_ONCE)
844 pm->op_pmflags |= PMf_USED;
852 if (gimme == G_ARRAY) {
856 if (global && !iters)
860 EXTEND(SP, iters + i);
861 for (i = !i; i <= iters; i++) {
862 PUSHs(sv_newmortal());
864 if ((s = rx->startp[i]) && rx->endp[i] ) {
865 len = rx->endp[i] - s;
866 sv_setpvn(*SP, s, len);
870 truebase = rx->subbeg;
871 if (rx->startp[0] && rx->startp[0] == rx->endp[0])
875 LEAVE_SCOPE(oldsave);
881 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG))
882 mg = mg_find(TARG, 'g');
884 sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
885 mg = mg_find(TARG, 'g');
888 mg->mg_len = rx->endp[0] - truebase;
889 if (rx->startp[0] == rx->endp[0])
890 mg->mg_flags |= MGf_MINMATCH;
892 mg->mg_flags &= ~MGf_MINMATCH;
897 LEAVE_SCOPE(oldsave);
902 ++BmUSEFUL(pm->op_pmshort);
904 if (pm->op_pmflags & PMf_ONCE)
905 pm->op_pmflags |= PMf_USED;
907 rx->subbeg = truebase;
910 rx->endp[0] = s + SvCUR(pm->op_pmshort);
917 Safefree(rx->subbase);
918 tmps = rx->subbase = savepvn(t, strend-t);
920 rx->subend = tmps + (strend-t);
921 tmps = rx->startp[0] = tmps + (s - t);
922 rx->endp[0] = tmps + SvCUR(pm->op_pmshort);
924 LEAVE_SCOPE(oldsave);
929 ++BmUSEFUL(pm->op_pmshort);
933 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
934 MAGIC* mg = mg_find(TARG, 'g');
939 LEAVE_SCOPE(oldsave);
940 if (gimme == G_ARRAY)
953 register IO *io = GvIO(last_in_gv);
954 register I32 type = op->op_type;
960 if (IoFLAGS(io) & IOf_ARGV) {
961 if (IoFLAGS(io) & IOf_START) {
962 IoFLAGS(io) &= ~IOf_START;
964 if (av_len(GvAVn(last_in_gv)) < 0) {
965 SV *tmpstr = newSVpv("-", 1); /* assume stdin */
966 av_push(GvAVn(last_in_gv), tmpstr);
969 fp = nextargv(last_in_gv);
970 if (!fp) { /* Note: fp != IoIFP(io) */
971 (void)do_close(last_in_gv, FALSE); /* now it does*/
972 IoFLAGS(io) |= IOf_START;
975 else if (type == OP_GLOB) {
976 SV *tmpcmd = NEWSV(55, 0);
980 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
981 /* since spawning off a process is a real performance hit */
984 #include <lib$routines.h>
987 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
988 char vmsspec[NAM$C_MAXRSS+1];
989 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
990 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
991 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
994 struct dsc$descriptor_s wilddsc
995 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
996 struct dsc$descriptor_vs rsdsc
997 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
998 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
1000 /* We could find out if there's an explicit dev/dir or version
1001 by peeking into lib$find_file's internal context at
1002 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
1003 but that's unsupported, so I don't want to do it now and
1004 have it bite someone in the future. */
1005 strcat(tmpfnam,tmpnam(NULL));
1006 cp = SvPV(tmpglob,i);
1008 if (cp[i] == ';') hasver = 1;
1010 if (sts) hasver = 1;
1014 hasdir = isunix = 1;
1017 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
1022 if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) {
1023 ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
1024 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
1025 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
1026 &dfltdsc,NULL,NULL,NULL))&1)) {
1027 end = rstr + (unsigned long int) *rslt;
1028 if (!hasver) while (*end != ';') end--;
1029 *(end++) = '\n'; *end = '\0';
1030 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
1032 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob));
1037 while (*(--begin) != ']' && *begin != '>') ;
1040 ok = (PerlIO_puts(tmpfp,begin) != EOF);
1042 if (cxt) (void)lib$find_file_end(&cxt);
1043 if (ok && sts != RMS$_NMF &&
1044 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
1047 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
1049 PerlIO_close(tmpfp);
1053 PerlIO_rewind(tmpfp);
1055 IoIFP(io) = fp = tmpfp;
1062 sv_setpv(tmpcmd, "for a in ");
1063 sv_catsv(tmpcmd, tmpglob);
1064 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
1066 sv_setpv(tmpcmd, "perlglob ");
1067 sv_catsv(tmpcmd, tmpglob);
1068 sv_catpv(tmpcmd, " |");
1072 sv_setpvn(tmpcmd, cshname, cshlen);
1073 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
1074 sv_catsv(tmpcmd, tmpglob);
1075 sv_catpv(tmpcmd, "' 2>/dev/null |");
1077 sv_setpv(tmpcmd, "echo ");
1078 sv_catsv(tmpcmd, tmpglob);
1080 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
1082 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
1085 #endif /* !DOSISH */
1086 (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
1087 FALSE, 0, 0, Nullfp);
1093 else if (type == OP_GLOB)
1097 if (dowarn && io && !(IoFLAGS(io) & IOf_START))
1098 warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
1099 if (GIMME == G_SCALAR) {
1100 (void)SvOK_off(TARG);
1105 if (GIMME == G_ARRAY) {
1106 sv = sv_2mortal(NEWSV(57, 80));
1111 (void)SvUPGRADE(sv, SVt_PV);
1112 tmplen = SvLEN(sv); /* remember if already alloced */
1114 Sv_Grow(sv, 80); /* try short-buffering it */
1115 if (type == OP_RCATLINE)
1121 if (!sv_gets(sv, fp, offset)) {
1122 PerlIO_clearerr(fp);
1123 if (IoFLAGS(io) & IOf_ARGV) {
1124 fp = nextargv(last_in_gv);
1127 (void)do_close(last_in_gv, FALSE);
1128 IoFLAGS(io) |= IOf_START;
1130 else if (type == OP_GLOB) {
1131 (void)do_close(last_in_gv, FALSE);
1133 if (GIMME == G_SCALAR) {
1134 (void)SvOK_off(TARG);
1143 SvTAINT(sv); /* Anything from the outside world...*/
1145 if (type == OP_GLOB) {
1148 if (SvCUR(sv) > 0 && SvCUR(rs) > 0) {
1149 tmps = SvEND(sv) - 1;
1150 if (*tmps == *SvPVX(rs)) {
1155 for (tmps = SvPVX(sv); *tmps; tmps++)
1156 if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
1157 strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
1159 if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) {
1160 (void)POPs; /* Unmatched wildcard? Chuck it... */
1164 if (GIMME == G_ARRAY) {
1165 if (SvLEN(sv) - SvCUR(sv) > 20) {
1166 SvLEN_set(sv, SvCUR(sv)+1);
1167 Renew(SvPVX(sv), SvLEN(sv), char);
1169 sv = sv_2mortal(NEWSV(58, 80));
1172 else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
1173 /* try to reclaim a bit of scalar space (only on 1st alloc) */
1177 SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */
1178 Renew(SvPVX(sv), SvLEN(sv), char);
1187 register CONTEXT *cx;
1191 * We don't just use the GIMME macro here because it assumes there's
1192 * already a context, which ain't necessarily so at initial startup.
1195 if (op->op_flags & OPf_KNOW)
1196 gimme = op->op_flags & OPf_LIST;
1197 else if (cxstack_ix >= 0)
1198 gimme = cxstack[cxstack_ix].blk_gimme;
1205 PUSHBLOCK(cx, CXt_BLOCK, sp);
1217 I32 lval = op->op_flags & OPf_MOD;
1219 if (SvTYPE(hv) != SVt_PVHV)
1221 he = hv_fetch_ent(hv, keysv, lval, 0);
1223 if (!he || HeVAL(he) == &sv_undef)
1224 DIE(no_helem, SvPV(keysv, na));
1225 if (op->op_private & OPpLVAL_INTRO)
1226 save_svref(&HeVAL(he));
1227 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
1228 provide_ref(op, HeVAL(he));
1230 PUSHs(he ? HeVAL(he) : &sv_undef);
1237 register CONTEXT *cx;
1243 if (op->op_flags & OPf_SPECIAL) {
1244 cx = &cxstack[cxstack_ix];
1245 cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */
1250 if (op->op_flags & OPf_KNOW)
1251 gimme = op->op_flags & OPf_LIST;
1252 else if (cxstack_ix >= 0)
1253 gimme = cxstack[cxstack_ix].blk_gimme;
1257 if (gimme == G_SCALAR) {
1258 if (op->op_private & OPpLEAVE_VOID)
1263 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
1266 *MARK = sv_mortalcopy(TOPs);
1275 for (mark = newsp + 1; mark <= SP; mark++)
1276 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP)))
1277 *mark = sv_mortalcopy(*mark);
1278 /* in case LEAVE wipes old return values */
1280 curpm = newpm; /* Don't pop $1 et al till now */
1290 register CONTEXT *cx;
1295 cx = &cxstack[cxstack_ix];
1296 if (cx->cx_type != CXt_LOOP)
1297 DIE("panic: pp_iter");
1298 av = cx->blk_loop.iterary;
1299 if (av == curstack && cx->blk_loop.iterix >= cx->blk_oldsp)
1302 if (cx->blk_loop.iterix >= AvFILL(av))
1305 if (sv = AvARRAY(av)[++cx->blk_loop.iterix]) {
1307 *cx->blk_loop.itervar = sv;
1310 *cx->blk_loop.itervar = &sv_undef;
1318 register PMOP *pm = cPMOP;
1333 register REGEXP *rx = pm->op_pmregexp;
1335 int force_on_match = 0;
1336 I32 oldsave = savestack_ix;
1338 if (pm->op_pmflags & PMf_CONST) /* known replacement string? */
1340 if (op->op_flags & OPf_STACKED)
1346 s = SvPV(TARG, len);
1347 if (!SvPOKp(TARG) || SvREADONLY(TARG) || (SvTYPE(TARG) == SVt_PVGV))
1352 DIE("panic: do_subst");
1355 maxiters = (strend - s) + 10;
1357 if (!rx->prelen && curpm) {
1359 rx = pm->op_pmregexp;
1361 safebase = ((!rx || !rx->nparens) && !sawampersand);
1362 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
1364 multiline = pm->op_pmflags & PMf_MULTILINE;
1367 if (pm->op_pmshort) {
1368 if (pm->op_pmflags & PMf_SCANFIRST) {
1369 if (SvSCREAM(TARG)) {
1370 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
1372 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
1375 else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend,
1378 if (s && rx->regback >= 0) {
1379 ++BmUSEFUL(pm->op_pmshort);
1387 else if (!multiline) {
1388 if (*SvPVX(pm->op_pmshort) != *s ||
1389 bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
1390 if (pm->op_pmflags & PMf_FOLD) {
1391 if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
1398 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
1399 SvREFCNT_dec(pm->op_pmshort);
1400 pm->op_pmshort = Nullsv; /* opt is being useless */
1403 once = !(rpm->op_pmflags & PMf_GLOBAL);
1404 if (rpm->op_pmflags & PMf_CONST) { /* known replacement string? */
1405 c = SvPV(dstr, clen);
1406 if (clen <= rx->minlen) {
1407 /* can do inplace substitution */
1408 if (pregexec(rx, s, strend, orig, 0,
1409 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1410 if (force_on_match) {
1412 s = SvPV_force(TARG, len);
1415 if (rx->subbase) /* oops, no we can't */
1419 SvSCREAM_off(TARG); /* disable possible screamer */
1424 if (m - s > strend - d) { /* faster to shorten from end */
1426 Copy(c, m, clen, char);
1431 Move(d, m, i, char);
1435 SvCUR_set(TARG, m - s);
1436 (void)SvPOK_only(TARG);
1439 LEAVE_SCOPE(oldsave);
1443 else if (i = m - s) { /* faster from front */
1451 Copy(c, m, clen, char);
1452 (void)SvPOK_only(TARG);
1455 LEAVE_SCOPE(oldsave);
1461 Copy(c, d, clen, char);
1462 (void)SvPOK_only(TARG);
1465 LEAVE_SCOPE(oldsave);
1470 (void)SvPOK_only(TARG);
1473 LEAVE_SCOPE(oldsave);
1479 if (iters++ > maxiters)
1480 DIE("Substitution loop");
1485 Move(s, d, i, char);
1489 Copy(c, d, clen, char);
1493 } while (pregexec(rx, s, strend, orig, s == m,
1494 Nullsv, TRUE)); /* (don't match same null twice) */
1497 SvCUR_set(TARG, d - SvPVX(TARG) + i);
1498 Move(s, d, i+1, char); /* include the Null */
1500 (void)SvPOK_only(TARG);
1502 PUSHs(sv_2mortal(newSViv((I32)iters)));
1503 LEAVE_SCOPE(oldsave);
1507 LEAVE_SCOPE(oldsave);
1513 if (pregexec(rx, s, strend, orig, 0,
1514 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1516 if (force_on_match) {
1518 s = SvPV_force(TARG, len);
1521 dstr = NEWSV(25, sv_len(TARG));
1522 sv_setpvn(dstr, m, s-m);
1525 register CONTEXT *cx;
1527 RETURNOP(cPMOP->op_pmreplroot);
1530 if (iters++ > maxiters)
1531 DIE("Substitution loop");
1532 if (rx->subbase && rx->subbase != orig) {
1537 strend = s + (strend - m);
1540 sv_catpvn(dstr, s, m-s);
1543 sv_catpvn(dstr, c, clen);
1546 } while (pregexec(rx, s, strend, orig, s == m, Nullsv,
1548 sv_catpvn(dstr, s, strend - s);
1550 (void)SvOOK_off(TARG);
1551 Safefree(SvPVX(TARG));
1552 SvPVX(TARG) = SvPVX(dstr);
1553 SvCUR_set(TARG, SvCUR(dstr));
1554 SvLEN_set(TARG, SvLEN(dstr));
1558 (void)SvPOK_only(TARG);
1560 PUSHs(sv_2mortal(newSViv((I32)iters)));
1561 LEAVE_SCOPE(oldsave);
1565 LEAVE_SCOPE(oldsave);
1569 ++BmUSEFUL(pm->op_pmshort);
1571 LEAVE_SCOPE(oldsave);
1580 stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr];
1582 LEAVE; /* exit inner scope */
1585 if (stack_base + *markstack_ptr > sp) {
1588 LEAVE; /* exit outer scope */
1589 (void)POPMARK; /* pop src */
1590 items = --*markstack_ptr - markstack_ptr[-1];
1591 (void)POPMARK; /* pop dst */
1592 SP = stack_base + POPMARK; /* pop original mark */
1593 if (GIMME != G_ARRAY) {
1604 ENTER; /* enter inner scope */
1607 src = stack_base[*markstack_ptr];
1611 RETURNOP(cLOGOP->op_other);
1622 register CONTEXT *cx;
1627 if (gimme == G_SCALAR) {
1630 if (SvFLAGS(TOPs) & SVs_TEMP)
1633 *MARK = sv_mortalcopy(TOPs);
1641 for (mark = newsp + 1; mark <= SP; mark++)
1642 if (!(SvFLAGS(*mark) & SVs_TEMP))
1643 *mark = sv_mortalcopy(*mark);
1644 /* in case LEAVE wipes old return values */
1647 if (cx->blk_sub.hasargs) { /* You don't exist; go away. */
1648 AV* av = cx->blk_sub.argarray;
1653 curpm = newpm; /* Don't pop $1 et al till now */
1657 return pop_return();
1666 register CONTEXT *cx;
1668 I32 hasargs = (op->op_flags & OPf_STACKED) != 0;
1671 DIE("Not a CODE reference");
1672 switch (SvTYPE(sv)) {
1677 if (sv == &sv_yes) /* unfound import, ignore */
1680 DIE(no_usym, "a subroutine");
1682 if (op->op_private & HINT_STRICT_REFS)
1683 DIE(no_symref, sym, "a subroutine");
1684 cv = perl_get_cv(sym, TRUE);
1688 if (SvTYPE(cv) == SVt_PVCV)
1693 DIE("Not a CODE reference");
1698 if (!(cv = GvCV((GV*)sv)))
1699 cv = sv_2cv(sv, &stash, &gv, TRUE);
1708 DIE("Not a CODE reference");
1710 if (!CvROOT(cv) && !CvXSUB(cv)) {
1711 if (gv = CvGV(cv)) {
1714 if (SvFAKE(cv) && GvCV(gv) != cv) { /* autoloaded stub? */
1716 if (SvTYPE(sv) == SVt_PVGV) {
1717 SvREFCNT_dec(GvCV((GV*)sv));
1718 GvCV((GV*)sv) = (CV*)SvREFCNT_inc((SV*)cv);
1722 tmpstr = sv_newmortal();
1723 gv_efullname(tmpstr, gv);
1724 ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD");
1725 if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */
1727 sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */
1729 sv_unmagic(GvSV(CvGV(cv)), 't');
1733 DIE("Undefined subroutine &%s called",SvPVX(tmpstr));
1735 DIE("Undefined subroutine called");
1739 if ((op->op_private & OPpENTERSUB_DB)) {
1743 if ( CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)
1744 || strEQ(GvNAME(gv), "END") ) {
1745 /* GV is potentially non-unique */
1746 sv_setsv(sv, newRV((SV*)cv));
1749 gv_efullname(sv,gv);
1752 if (CvXSUB(cv)) curcopdb = curcop;
1754 DIE("No DBsub routine");
1758 if (CvOLDSTYLE(cv)) {
1759 I32 (*fp3)_((int,int,int));
1761 register I32 items = SP - MARK;
1762 /* We dont worry to copy from @_. */
1767 stack_sp = mark + 1;
1768 fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
1769 items = (*fp3)(CvXSUBANY(cv).any_i32,
1770 MARK - stack_base + 1,
1772 stack_sp = stack_base + items;
1775 I32 markix = TOPMARK;
1780 /* Need to copy @_ to stack. Alternative may be to
1781 * switch stack to @_, and copy return values
1782 * back. This would allow popping @_ in XSUB, e.g.. XXXX */
1783 AV* av = GvAV(defgv);
1784 I32 items = AvFILL(av) + 1;
1787 /* Mark is at the end of the stack. */
1789 Copy(AvARRAY(av), sp + 1, items, SV*);
1794 if (curcopdb) { /* We assume that the first
1795 XSUB in &DB::sub is the
1801 /* Do we need to open block here? XXXX */
1802 (void)(*CvXSUB(cv))(cv);
1804 /* Enforce some sanity in scalar context. */
1805 if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) {
1806 if (markix > stack_sp - stack_base)
1807 *(stack_base + markix) = &sv_undef;
1809 *(stack_base + markix) = *stack_sp;
1810 stack_sp = stack_base + markix;
1818 register I32 items = SP - MARK;
1819 AV* padlist = CvPADLIST(cv);
1820 SV** svp = AvARRAY(padlist);
1821 push_return(op->op_next);
1822 PUSHBLOCK(cx, CXt_SUB, MARK);
1825 if (CvDEPTH(cv) < 2)
1826 (void)SvREFCNT_inc(cv);
1827 else { /* save temporaries on recursion? */
1828 if (CvDEPTH(cv) == 100 && dowarn)
1829 warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv)));
1830 if (CvDEPTH(cv) > AvFILL(padlist)) {
1832 AV *newpad = newAV();
1833 SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
1834 I32 ix = AvFILL((AV*)svp[1]);
1835 svp = AvARRAY(svp[0]);
1836 for ( ;ix > 0; ix--) {
1837 if (svp[ix] != &sv_undef) {
1838 char *name = SvPVX(svp[ix]);
1839 if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* outer lexical? */
1840 av_store(newpad, ix,
1841 SvREFCNT_inc(oldpad[ix]) );
1843 else { /* our own lexical */
1845 av_store(newpad, ix, sv = (SV*)newAV());
1846 else if (*name == '%')
1847 av_store(newpad, ix, sv = (SV*)newHV());
1849 av_store(newpad, ix, sv = NEWSV(0,0));
1854 av_store(newpad, ix, sv = NEWSV(0,0));
1858 av = newAV(); /* will be @_ */
1860 av_store(newpad, 0, (SV*)av);
1861 AvFLAGS(av) = AVf_REIFY;
1862 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
1863 AvFILL(padlist) = CvDEPTH(cv);
1864 svp = AvARRAY(padlist);
1868 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
1870 AV* av = (AV*)curpad[0];
1877 cx->blk_sub.savearray = GvAV(defgv);
1878 cx->blk_sub.argarray = av;
1879 GvAV(defgv) = cx->blk_sub.argarray;
1882 if (items > AvMAX(av) + 1) {
1884 if (AvARRAY(av) != ary) {
1885 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
1886 SvPVX(av) = (char*)ary;
1888 if (items > AvMAX(av) + 1) {
1889 AvMAX(av) = items - 1;
1890 Renew(ary,items,SV*);
1892 SvPVX(av) = (char*)ary;
1895 Copy(MARK,AvARRAY(av),items,SV*);
1896 AvFILL(av) = items - 1;
1904 RETURNOP(CvSTART(cv));
1914 I32 lval = op->op_flags & OPf_MOD;
1917 elem -= curcop->cop_arybase;
1918 if (SvTYPE(av) != SVt_PVAV)
1920 svp = av_fetch(av, elem, lval);
1922 if (!svp || *svp == &sv_undef)
1923 DIE(no_aelem, elem);
1924 if (op->op_private & OPpLVAL_INTRO)
1926 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
1927 provide_ref(op, *svp);
1929 PUSHs(svp ? *svp : &sv_undef);
1943 (void)SvUPGRADE(sv, SVt_RV);
1944 SvRV(sv) = (op->op_private & OPpDEREF_HV ?
1945 (SV*)newHV() : (SV*)newAV());
1960 sv = *(stack_base + TOPMARK + 1);
1973 !(packname = SvPV(sv, packlen)) ||
1974 !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
1975 !(ob=(SV*)GvIO(iogv)))
1977 char *name = SvPV(nm, na);
1979 if (!packname || !isALPHA(*packname))
1980 DIE("Can't call method \"%s\" without a package or object reference", name);
1981 if (!(stash = gv_stashpvn(packname, packlen, FALSE))) {
1982 if (gv_stashpvn("UNIVERSAL", 9, FALSE))
1983 stash = gv_stashpvn(packname, packlen, TRUE);
1985 DIE("Can't call method \"%s\" in empty package \"%s\"",
1988 gv = gv_fetchmethod(stash,name);
1990 DIE("Can't locate object method \"%s\" via package \"%s\"",
1995 *(stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv));
1998 if (!ob || !SvOBJECT(ob)) {
1999 char *name = SvPV(nm, na);
2000 DIE("Can't call method \"%s\" on unblessed reference", name);
2003 if (!gv) { /* nothing cached */
2004 char *name = SvPV(nm, na);
2005 gv = gv_fetchmethod(SvSTASH(ob),name);
2007 DIE("Can't locate object method \"%s\" via package \"%s\"",
2008 name, HvNAME(SvSTASH(ob)));