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!
28 register CV* cv = (CV *) cvarg;
31 #endif /* DEBUGGING */
33 DEBUG_L((fprintf(stderr, "0x%lx unsetting CvOWNER of 0x%lx:%s\n",
34 (unsigned long)thr, (unsigned long)cv, SvPEEK((SV*)cv))));
35 MUTEX_LOCK(CvMUTEXP(cv));
36 assert(CvDEPTH(cv) == 0);
37 assert(thr == CvOWNER(cv));
40 COND_SIGNAL(CvCONDP(cv)); /* next please */
41 MUTEX_UNLOCK(CvMUTEXP(cv));
52 DEBUG_L((fprintf(stderr, "0x%lx unlocking mutex 0x%lx\n",
53 (unsigned long) thr, (unsigned long) m)));
54 #endif /* DEBUGGING */
55 MUTEX_UNLOCK((pthread_mutex_t *) m);
58 #endif /* USE_THREADS */
70 TAINT_NOT; /* Each statement is presumed innocent */
71 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
80 if (op->op_private & OPpLVAL_INTRO)
81 PUSHs(save_scalar(cGVOP->op_gv));
83 PUSHs(GvSV(cGVOP->op_gv));
104 sv_setpvn(TARG,s,len);
112 XPUSHs((SV*)cGVOP->op_gv);
129 switch (elem ? *elem : '\0')
132 if (strEQ(elem, "ARRAY"))
136 if (strEQ(elem, "CODE"))
140 if (strEQ(elem, "FILEHANDLE"))
141 ref = (SV*)GvIOp(gv);
144 if (strEQ(elem, "GLOB"))
148 if (strEQ(elem, "HASH"))
152 if (strEQ(elem, "NAME"))
153 sv = newSVpv(GvNAME(gv), GvNAMELEN(gv));
156 if (strEQ(elem, "PACKAGE"))
157 sv = newSVpv(HvNAME(GvSTASH(gv)), 0);
160 if (strEQ(elem, "SCALAR"))
181 RETURNOP(cLOGOP->op_other);
190 if (op->op_private & OPpASSIGN_BACKWARDS) {
192 temp = left; left = right; right = temp;
194 if (tainting && tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) ||
195 !((mg = mg_find(left, 't')) && mg->mg_len & 1)))
199 SvSetSV(right, left);
209 RETURNOP(cCONDOP->op_true);
211 RETURNOP(cCONDOP->op_false);
217 TAINT_NOT; /* Each statement is presumed innocent */
218 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
220 oldsave = scopestack[scopestack_ix - 1];
221 LEAVE_SCOPE(oldsave);
227 dSP; tryAMAGICbinSET(seq,0);
230 SETs( sv_eq(left, right) ? &sv_yes : &sv_no );
237 dSP; dATARGET; tryAMAGICbin(concat,opASSIGN);
244 sv_setpvn(TARG,s,len);
246 else if (SvGMAGICAL(TARG))
248 else if (!SvOK(TARG)) {
249 s = SvPV_force(TARG, len);
250 sv_setpv(TARG, ""); /* Suppress warning. */
253 sv_catpvn(TARG,s,len);
263 if (op->op_flags & OPf_MOD) {
264 if (op->op_private & OPpLVAL_INTRO)
265 SAVECLEARSV(curpad[op->op_targ]);
266 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
267 provide_ref(op, curpad[op->op_targ]);
274 last_in_gv = (GV*)(*stack_sp--);
275 return do_readline();
280 dSP; tryAMAGICbinSET(eq,0);
283 SETs((TOPn == value) ? &sv_yes : &sv_no);
293 SvFLAGS(TOPs) &= ~(SVf_NOK|SVf_POK|SVp_NOK|SVp_POK);
308 RETURNOP(cLOGOP->op_other);
314 dSP; dATARGET; tryAMAGICbin(add,opASSIGN);
317 SETn( left + right );
325 AV *av = GvAV((GV*)cSVOP->op_sv);
326 SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD);
327 PUSHs(svp ? *svp : &sv_undef);
335 do_join(TARG, *MARK, MARK, SP);
348 /* Oversized hot code. */
352 dSP; dMARK; dORIGMARK;
357 if (op->op_flags & OPf_STACKED)
361 if (!(io = GvIO(gv))) {
363 SV* sv = sv_newmortal();
365 warn("Filehandle %s never opened", SvPV(sv,na));
368 SETERRNO(EBADF,RMS$_IFI);
371 else if (!(fp = IoOFP(io))) {
373 SV* sv = sv_newmortal();
376 warn("Filehandle %s opened only for input", SvPV(sv,na));
378 warn("print on closed filehandle %s", SvPV(sv,na));
380 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
387 if (!do_print(*MARK, fp))
391 if (fwrite1(ofs, 1, ofslen, fp) == 0 || ferror(fp)) {
400 if (!do_print(*MARK, fp))
409 if (fwrite1(ors, 1, orslen, fp) == 0 || ferror(fp))
412 if (IoFLAGS(io) & IOf_FLUSH)
413 if (Fflush(fp) == EOF)
436 if (SvTYPE(av) != SVt_PVAV)
437 DIE("Not an ARRAY reference");
438 if (op->op_private & OPpLVAL_INTRO)
439 av = (AV*)save_svref((SV**)sv);
440 if (op->op_flags & OPf_REF) {
446 if (SvTYPE(sv) == SVt_PVAV) {
448 if (op->op_flags & OPf_REF) {
454 if (SvTYPE(sv) != SVt_PVGV) {
457 if (SvGMAGICAL(sv)) {
463 if (op->op_flags & OPf_REF ||
464 op->op_private & HINT_STRICT_REFS)
465 DIE(no_usym, "an ARRAY");
466 if (GIMME == G_ARRAY)
471 if (op->op_private & HINT_STRICT_REFS)
472 DIE(no_symref, sym, "an ARRAY");
473 sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
476 if (op->op_private & OPpLVAL_INTRO)
478 if (op->op_flags & OPf_REF) {
485 if (GIMME == G_ARRAY) {
486 I32 maxarg = AvFILL(av) + 1;
488 Copy(AvARRAY(av), SP+1, maxarg, SV*);
493 I32 maxarg = AvFILL(av) + 1;
509 if (SvTYPE(hv) != SVt_PVHV)
510 DIE("Not a HASH reference");
511 if (op->op_private & OPpLVAL_INTRO)
512 hv = (HV*)save_svref((SV**)sv);
513 if (op->op_flags & OPf_REF) {
519 if (SvTYPE(sv) == SVt_PVHV) {
521 if (op->op_flags & OPf_REF) {
527 if (SvTYPE(sv) != SVt_PVGV) {
530 if (SvGMAGICAL(sv)) {
536 if (op->op_flags & OPf_REF ||
537 op->op_private & HINT_STRICT_REFS)
538 DIE(no_usym, "a HASH");
539 if (GIMME == G_ARRAY) {
546 if (op->op_private & HINT_STRICT_REFS)
547 DIE(no_symref, sym, "a HASH");
548 sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
551 if (op->op_private & OPpLVAL_INTRO)
553 if (op->op_flags & OPf_REF) {
560 if (GIMME == G_ARRAY) { /* array wanted */
567 sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1);
580 SV **lastlelem = stack_sp;
581 SV **lastrelem = stack_base + POPMARK;
582 SV **firstrelem = stack_base + POPMARK + 1;
583 SV **firstlelem = lastrelem + 1;
595 delaymagic = DM_DELAY; /* catch simultaneous items */
597 /* If there's a common identifier on both sides we have to take
598 * special care that assigning the identifier on the left doesn't
599 * clobber a value on the right that's used later in the list.
601 if (op->op_private & OPpASSIGN_COMMON) {
602 for (relem = firstrelem; relem <= lastrelem; relem++) {
605 *relem = sv_mortalcopy(sv);
613 while (lelem <= lastlelem) {
614 tainted = 0; /* Each item stands on its own, taintwise. */
616 switch (SvTYPE(sv)) {
619 magic = SvMAGICAL(ary) != 0;
623 while (relem <= lastrelem) { /* gobble up all the rest */
628 (void)av_store(ary,i++,sv);
639 magic = SvMAGICAL(hash) != 0;
642 while (relem < lastrelem) { /* gobble up all the rest */
647 sv = &sv_no, relem++;
648 tmps = SvPV(sv, len);
649 tmpstr = NEWSV(29,0);
651 sv_setsv(tmpstr,*relem); /* value */
653 (void)hv_store(hash,tmps,len,tmpstr,0);
661 if (SvTHINKFIRST(sv)) {
662 if (SvREADONLY(sv) && curcop != &compiling) {
663 if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no)
665 if (relem <= lastrelem)
672 if (relem <= lastrelem) {
673 sv_setsv(sv, *relem);
677 sv_setsv(sv, &sv_undef);
682 if (delaymagic & ~DM_DELAY) {
683 if (delaymagic & DM_UID) {
685 (void)setresuid(uid,euid,(Uid_t)-1);
688 (void)setreuid(uid,euid);
691 if ((delaymagic & DM_UID) == DM_RUID) {
693 delaymagic &= ~DM_RUID;
695 # endif /* HAS_SETRUID */
697 if ((delaymagic & DM_UID) == DM_EUID) {
699 delaymagic &= ~DM_EUID;
701 # endif /* HAS_SETEUID */
702 if (delaymagic & DM_UID) {
704 DIE("No setreuid available");
707 # endif /* HAS_SETREUID */
708 #endif /* HAS_SETRESUID */
710 euid = (int)geteuid();
712 if (delaymagic & DM_GID) {
714 (void)setresgid(gid,egid,(Gid_t)-1);
717 (void)setregid(gid,egid);
720 if ((delaymagic & DM_GID) == DM_RGID) {
722 delaymagic &= ~DM_RGID;
724 # endif /* HAS_SETRGID */
726 if ((delaymagic & DM_GID) == DM_EGID) {
728 delaymagic &= ~DM_EGID;
730 # endif /* HAS_SETEGID */
731 if (delaymagic & DM_GID) {
733 DIE("No setregid available");
736 # endif /* HAS_SETREGID */
737 #endif /* HAS_SETRESGID */
739 egid = (int)getegid();
741 tainting |= (uid && (euid != uid || egid != gid));
744 if (GIMME == G_ARRAY) {
748 SP = firstrelem + (lastlelem - firstlelem);
755 SETi(lastrelem - firstrelem + 1);
763 register PMOP *pm = cPMOP;
770 register REGEXP *rx = pm->op_pmregexp;
774 I32 oldsave = savestack_ix;
776 if (op->op_flags & OPf_STACKED)
785 DIE("panic: do_match");
787 if (pm->op_pmflags & PMf_USED) {
788 if (gimme == G_ARRAY)
793 if (!rx->prelen && curpm) {
795 rx = pm->op_pmregexp;
798 if (global = pm->op_pmflags & PMf_GLOBAL) {
800 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
801 MAGIC* mg = mg_find(TARG, 'g');
802 if (mg && mg->mg_len >= 0) {
803 rx->endp[0] = rx->startp[0] = s + mg->mg_len;
804 minmatch = (mg->mg_flags & MGf_MINMATCH);
808 if (!rx->nparens && !global)
809 gimme = G_SCALAR; /* accidental array context? */
810 safebase = (gimme == G_ARRAY) || global;
811 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
813 multiline = pm->op_pmflags & PMf_MULTILINE;
817 if (global && rx->startp[0]) {
821 minmatch = (s == rx->startp[0]);
823 if (pm->op_pmshort) {
824 if (pm->op_pmflags & PMf_SCANFIRST) {
825 if (SvSCREAM(TARG)) {
826 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
828 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
830 else if (pm->op_pmflags & PMf_ALL)
833 else if (!(s = fbm_instr((unsigned char*)s,
834 (unsigned char*)strend, pm->op_pmshort)))
836 else if (pm->op_pmflags & PMf_ALL)
838 if (s && rx->regback >= 0) {
839 ++BmUSEFUL(pm->op_pmshort);
847 else if (!multiline) {
848 if (*SvPVX(pm->op_pmshort) != *s ||
849 bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
850 if (pm->op_pmflags & PMf_FOLD) {
851 if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
858 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
859 SvREFCNT_dec(pm->op_pmshort);
860 pm->op_pmshort = Nullsv; /* opt is being useless */
863 if (pregexec(rx, s, strend, truebase, minmatch,
864 SvSCREAM(TARG) ? TARG : Nullsv,
867 if (pm->op_pmflags & PMf_ONCE)
868 pm->op_pmflags |= PMf_USED;
876 if (gimme == G_ARRAY) {
880 if (global && !iters)
884 EXTEND(SP, iters + i);
885 for (i = !i; i <= iters; i++) {
886 PUSHs(sv_newmortal());
888 if ((s = rx->startp[i]) && rx->endp[i] ) {
889 len = rx->endp[i] - s;
890 sv_setpvn(*SP, s, len);
894 truebase = rx->subbeg;
895 if (rx->startp[0] && rx->startp[0] == rx->endp[0])
899 LEAVE_SCOPE(oldsave);
905 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG))
906 mg = mg_find(TARG, 'g');
908 sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
909 mg = mg_find(TARG, 'g');
912 mg->mg_len = rx->endp[0] - truebase;
913 if (rx->startp[0] == rx->endp[0])
914 mg->mg_flags |= MGf_MINMATCH;
916 mg->mg_flags &= ~MGf_MINMATCH;
921 LEAVE_SCOPE(oldsave);
926 ++BmUSEFUL(pm->op_pmshort);
928 if (pm->op_pmflags & PMf_ONCE)
929 pm->op_pmflags |= PMf_USED;
931 rx->subbeg = truebase;
934 rx->endp[0] = s + SvCUR(pm->op_pmshort);
941 Safefree(rx->subbase);
942 tmps = rx->subbase = savepvn(t, strend-t);
944 rx->subend = tmps + (strend-t);
945 tmps = rx->startp[0] = tmps + (s - t);
946 rx->endp[0] = tmps + SvCUR(pm->op_pmshort);
948 LEAVE_SCOPE(oldsave);
953 ++BmUSEFUL(pm->op_pmshort);
957 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
958 MAGIC* mg = mg_find(TARG, 'g');
963 LEAVE_SCOPE(oldsave);
964 if (gimme == G_ARRAY)
978 register IO *io = GvIO(last_in_gv);
979 register I32 type = op->op_type;
985 if (IoFLAGS(io) & IOf_ARGV) {
986 if (IoFLAGS(io) & IOf_START) {
987 IoFLAGS(io) &= ~IOf_START;
989 if (av_len(GvAVn(last_in_gv)) < 0) {
990 SV *tmpstr = newSVpv("-", 1); /* assume stdin */
991 av_push(GvAVn(last_in_gv), tmpstr);
994 fp = nextargv(last_in_gv);
995 if (!fp) { /* Note: fp != IoIFP(io) */
996 (void)do_close(last_in_gv, FALSE); /* now it does*/
997 IoFLAGS(io) |= IOf_START;
1000 else if (type == OP_GLOB) {
1001 SV *tmpcmd = NEWSV(55, 0);
1005 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
1006 /* since spawning off a process is a real performance hit */
1008 #include <descrip.h>
1009 #include <lib$routines.h>
1012 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
1013 char vmsspec[NAM$C_MAXRSS+1];
1014 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
1015 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
1016 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
1019 struct dsc$descriptor_s wilddsc
1020 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
1021 struct dsc$descriptor_vs rsdsc
1022 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
1023 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
1025 /* We could find out if there's an explicit dev/dir or version
1026 by peeking into lib$find_file's internal context at
1027 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
1028 but that's unsupported, so I don't want to do it now and
1029 have it bite someone in the future. */
1030 strcat(tmpfnam,tmpnam(NULL));
1031 cp = SvPV(tmpglob,i);
1033 if (cp[i] == ';') hasver = 1;
1035 if (sts) hasver = 1;
1039 hasdir = isunix = 1;
1042 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
1047 if ((tmpfp = fopen(tmpfnam,"w+","fop=dlt")) != NULL) {
1048 ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
1049 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
1050 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
1051 &dfltdsc,NULL,NULL,NULL))&1)) {
1052 end = rstr + (unsigned long int) *rslt;
1053 if (!hasver) while (*end != ';') end--;
1054 *(end++) = '\n'; *end = '\0';
1055 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
1057 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob));
1062 while (*(--begin) != ']' && *begin != '>') ;
1065 ok = (fputs(begin,tmpfp) != EOF);
1067 if (cxt) (void)lib$find_file_end(&cxt);
1068 if (ok && sts != RMS$_NMF &&
1069 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
1072 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
1080 IoIFP(io) = fp = tmpfp;
1086 sv_setpv(tmpcmd, "perlglob ");
1087 sv_catsv(tmpcmd, tmpglob);
1088 sv_catpv(tmpcmd, " |");
1091 sv_setpvn(tmpcmd, cshname, cshlen);
1092 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
1093 sv_catsv(tmpcmd, tmpglob);
1094 sv_catpv(tmpcmd, "' 2>/dev/null |");
1096 sv_setpv(tmpcmd, "echo ");
1097 sv_catsv(tmpcmd, tmpglob);
1099 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
1101 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
1105 (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
1106 FALSE, 0, 0, Nullfp);
1112 else if (type == OP_GLOB)
1116 if (dowarn && io && !(IoFLAGS(io) & IOf_START))
1117 warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
1118 if (GIMME == G_SCALAR) {
1119 (void)SvOK_off(TARG);
1124 if (GIMME == G_ARRAY) {
1125 sv = sv_2mortal(NEWSV(57, 80));
1130 (void)SvUPGRADE(sv, SVt_PV);
1131 tmplen = SvLEN(sv); /* remember if already alloced */
1133 Sv_Grow(sv, 80); /* try short-buffering it */
1134 if (type == OP_RCATLINE)
1140 if (!sv_gets(sv, fp, offset)) {
1142 if (IoFLAGS(io) & IOf_ARGV) {
1143 fp = nextargv(last_in_gv);
1146 (void)do_close(last_in_gv, FALSE);
1147 IoFLAGS(io) |= IOf_START;
1149 else if (type == OP_GLOB) {
1150 (void)do_close(last_in_gv, FALSE);
1152 if (GIMME == G_SCALAR) {
1153 (void)SvOK_off(TARG);
1162 SvTAINT(sv); /* Anything from the outside world...*/
1164 if (type == OP_GLOB) {
1167 if (SvCUR(sv) > 0 && SvCUR(rs) > 0) {
1168 tmps = SvEND(sv) - 1;
1169 if (*tmps == *SvPVX(rs)) {
1174 for (tmps = SvPVX(sv); *tmps; tmps++)
1175 if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
1176 strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
1178 if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) {
1179 (void)POPs; /* Unmatched wildcard? Chuck it... */
1183 if (GIMME == G_ARRAY) {
1184 if (SvLEN(sv) - SvCUR(sv) > 20) {
1185 SvLEN_set(sv, SvCUR(sv)+1);
1186 Renew(SvPVX(sv), SvLEN(sv), char);
1188 sv = sv_2mortal(NEWSV(58, 80));
1191 else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
1192 /* try to reclaim a bit of scalar space (only on 1st alloc) */
1196 SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */
1197 Renew(SvPVX(sv), SvLEN(sv), char);
1206 register CONTEXT *cx;
1210 * We don't just use the GIMME macro here because it assumes there's
1211 * already a context, which ain't necessarily so at initial startup.
1214 if (op->op_flags & OPf_KNOW)
1215 gimme = op->op_flags & OPf_LIST;
1216 else if (cxstack_ix >= 0)
1217 gimme = cxstack[cxstack_ix].blk_gimme;
1224 PUSHBLOCK(cx, CXt_BLOCK, sp);
1235 char *key = SvPV(keysv, keylen);
1237 I32 lval = op->op_flags & OPf_MOD;
1239 if (SvTYPE(hv) != SVt_PVHV)
1241 svp = hv_fetch(hv, key, keylen, lval);
1243 if (!svp || *svp == &sv_undef)
1245 if (op->op_private & OPpLVAL_INTRO)
1247 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
1248 provide_ref(op, *svp);
1250 PUSHs(svp ? *svp : &sv_undef);
1257 register CONTEXT *cx;
1263 if (op->op_flags & OPf_SPECIAL) {
1264 cx = &cxstack[cxstack_ix];
1265 cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */
1270 if (op->op_flags & OPf_KNOW)
1271 gimme = op->op_flags & OPf_LIST;
1272 else if (cxstack_ix >= 0)
1273 gimme = cxstack[cxstack_ix].blk_gimme;
1277 if (gimme == G_SCALAR) {
1278 if (op->op_private & OPpLEAVE_VOID)
1283 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
1286 *MARK = sv_mortalcopy(TOPs);
1295 for (mark = newsp + 1; mark <= SP; mark++)
1296 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP)))
1297 *mark = sv_mortalcopy(*mark);
1298 /* in case LEAVE wipes old return values */
1300 curpm = newpm; /* Don't pop $1 et al till now */
1310 register CONTEXT *cx;
1315 cx = &cxstack[cxstack_ix];
1316 if (cx->cx_type != CXt_LOOP)
1317 DIE("panic: pp_iter");
1318 av = cx->blk_loop.iterary;
1319 if (av == stack && cx->blk_loop.iterix >= cx->blk_oldsp)
1322 if (cx->blk_loop.iterix >= AvFILL(av))
1325 if (sv = AvARRAY(av)[++cx->blk_loop.iterix]) {
1327 *cx->blk_loop.itervar = sv;
1330 *cx->blk_loop.itervar = &sv_undef;
1338 register PMOP *pm = cPMOP;
1353 register REGEXP *rx = pm->op_pmregexp;
1355 int force_on_match = 0;
1356 I32 oldsave = savestack_ix;
1358 if (pm->op_pmflags & PMf_CONST) /* known replacement string? */
1360 if (op->op_flags & OPf_STACKED)
1366 s = SvPV(TARG, len);
1367 if (!SvPOKp(TARG) || SvREADONLY(TARG) || (SvTYPE(TARG) == SVt_PVGV))
1372 DIE("panic: do_subst");
1375 maxiters = (strend - s) + 10;
1377 if (!rx->prelen && curpm) {
1379 rx = pm->op_pmregexp;
1381 safebase = ((!rx || !rx->nparens) && !sawampersand);
1382 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
1384 multiline = pm->op_pmflags & PMf_MULTILINE;
1387 if (pm->op_pmshort) {
1388 if (pm->op_pmflags & PMf_SCANFIRST) {
1389 if (SvSCREAM(TARG)) {
1390 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
1392 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
1395 else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend,
1398 if (s && rx->regback >= 0) {
1399 ++BmUSEFUL(pm->op_pmshort);
1407 else if (!multiline) {
1408 if (*SvPVX(pm->op_pmshort) != *s ||
1409 bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
1410 if (pm->op_pmflags & PMf_FOLD) {
1411 if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
1418 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
1419 SvREFCNT_dec(pm->op_pmshort);
1420 pm->op_pmshort = Nullsv; /* opt is being useless */
1423 once = !(rpm->op_pmflags & PMf_GLOBAL);
1424 if (rpm->op_pmflags & PMf_CONST) { /* known replacement string? */
1425 c = SvPV(dstr, clen);
1426 if (clen <= rx->minlen) {
1427 /* can do inplace substitution */
1428 if (pregexec(rx, s, strend, orig, 0,
1429 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1430 if (force_on_match) {
1432 s = SvPV_force(TARG, len);
1435 if (rx->subbase) /* oops, no we can't */
1439 SvSCREAM_off(TARG); /* disable possible screamer */
1444 if (m - s > strend - d) { /* faster to shorten from end */
1446 Copy(c, m, clen, char);
1451 Move(d, m, i, char);
1455 SvCUR_set(TARG, m - s);
1456 (void)SvPOK_only(TARG);
1459 LEAVE_SCOPE(oldsave);
1463 else if (i = m - s) { /* faster from front */
1471 Copy(c, m, clen, char);
1472 (void)SvPOK_only(TARG);
1475 LEAVE_SCOPE(oldsave);
1481 Copy(c, d, clen, char);
1482 (void)SvPOK_only(TARG);
1485 LEAVE_SCOPE(oldsave);
1490 (void)SvPOK_only(TARG);
1493 LEAVE_SCOPE(oldsave);
1499 if (iters++ > maxiters)
1500 DIE("Substitution loop");
1505 Move(s, d, i, char);
1509 Copy(c, d, clen, char);
1513 } while (pregexec(rx, s, strend, orig, s == m,
1514 Nullsv, TRUE)); /* (don't match same null twice) */
1517 SvCUR_set(TARG, d - SvPVX(TARG) + i);
1518 Move(s, d, i+1, char); /* include the Null */
1520 (void)SvPOK_only(TARG);
1522 PUSHs(sv_2mortal(newSViv((I32)iters)));
1523 LEAVE_SCOPE(oldsave);
1527 LEAVE_SCOPE(oldsave);
1533 if (pregexec(rx, s, strend, orig, 0,
1534 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1536 if (force_on_match) {
1538 s = SvPV_force(TARG, len);
1541 dstr = NEWSV(25, sv_len(TARG));
1542 sv_setpvn(dstr, m, s-m);
1545 register CONTEXT *cx;
1547 RETURNOP(cPMOP->op_pmreplroot);
1550 if (iters++ > maxiters)
1551 DIE("Substitution loop");
1552 if (rx->subbase && rx->subbase != orig) {
1557 strend = s + (strend - m);
1560 sv_catpvn(dstr, s, m-s);
1563 sv_catpvn(dstr, c, clen);
1566 } while (pregexec(rx, s, strend, orig, s == m, Nullsv,
1568 sv_catpvn(dstr, s, strend - s);
1570 (void)SvOOK_off(TARG);
1571 Safefree(SvPVX(TARG));
1572 SvPVX(TARG) = SvPVX(dstr);
1573 SvCUR_set(TARG, SvCUR(dstr));
1574 SvLEN_set(TARG, SvLEN(dstr));
1578 (void)SvPOK_only(TARG);
1580 PUSHs(sv_2mortal(newSViv((I32)iters)));
1581 LEAVE_SCOPE(oldsave);
1585 LEAVE_SCOPE(oldsave);
1589 ++BmUSEFUL(pm->op_pmshort);
1591 LEAVE_SCOPE(oldsave);
1600 stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr];
1602 LEAVE; /* exit inner scope */
1605 if (stack_base + *markstack_ptr > sp) {
1608 LEAVE; /* exit outer scope */
1609 (void)POPMARK; /* pop src */
1610 items = --*markstack_ptr - markstack_ptr[-1];
1611 (void)POPMARK; /* pop dst */
1612 SP = stack_base + POPMARK; /* pop original mark */
1613 if (GIMME != G_ARRAY) {
1624 ENTER; /* enter inner scope */
1627 src = stack_base[*markstack_ptr];
1631 RETURNOP(cLOGOP->op_other);
1642 register CONTEXT *cx;
1647 if (gimme == G_SCALAR) {
1650 if (SvFLAGS(TOPs) & SVs_TEMP)
1653 *MARK = sv_mortalcopy(TOPs);
1661 for (mark = newsp + 1; mark <= SP; mark++)
1662 if (!(SvFLAGS(*mark) & SVs_TEMP))
1663 *mark = sv_mortalcopy(*mark);
1664 /* in case LEAVE wipes old return values */
1667 if (cx->blk_sub.hasargs) { /* You don't exist; go away. */
1668 AV* av = cx->blk_sub.argarray;
1673 curpm = newpm; /* Don't pop $1 et al till now */
1677 return pop_return();
1686 register CONTEXT *cx;
1690 DIE("Not a CODE reference");
1691 switch (SvTYPE(sv)) {
1696 if (sv == &sv_yes) /* unfound import, ignore */
1699 DIE(no_usym, "a subroutine");
1701 if (op->op_private & HINT_STRICT_REFS)
1702 DIE(no_symref, sym, "a subroutine");
1703 cv = perl_get_cv(sym, TRUE);
1707 if (SvTYPE(cv) == SVt_PVCV)
1712 DIE("Not a CODE reference");
1717 if (!(cv = GvCV((GV*)sv)))
1718 cv = sv_2cv(sv, &stash, &gv, TRUE);
1727 DIE("Not a CODE reference");
1729 if (!CvROOT(cv) && !CvXSUB(cv)) {
1730 if (gv = CvGV(cv)) {
1733 if (SvFAKE(cv) && GvCV(gv) != cv) { /* autoloaded stub? */
1735 if (SvTYPE(sv) == SVt_PVGV) {
1736 SvREFCNT_dec(GvCV((GV*)sv));
1737 GvCV((GV*)sv) = (CV*)SvREFCNT_inc((SV*)cv);
1741 tmpstr = sv_newmortal();
1742 gv_efullname(tmpstr, gv);
1743 ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD");
1744 if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */
1746 sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */
1748 sv_unmagic(GvSV(CvGV(cv)), 't');
1752 DIE("Undefined subroutine &%s called",SvPVX(tmpstr));
1754 DIE("Undefined subroutine called");
1758 if ((op->op_private & OPpENTERSUB_DB) && !CvXSUB(cv)) {
1761 if (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) {
1762 /* GV is potentially non-unique */
1763 sv_setsv(sv, newRV((SV*)cv));
1767 gv_efullname(sv,gv);
1771 DIE("No DBsub routine");
1775 MUTEX_LOCK(CvMUTEXP(cv));
1778 DEBUG_L((fprintf(stderr, "0x%lx entering fast %s\n",
1779 (unsigned long)thr, SvPEEK((SV*)cv))));
1780 #endif /* DEBUGGING */
1781 MUTEX_UNLOCK(CvMUTEXP(cv)); /* fast sub wants neither sync nor clone */
1783 else if (SvFLAGS(cv) & SVp_SYNC) {
1785 * It's a synchronised CV. Wait until it's free unless
1786 * we own it already (in which case we're recursing).
1788 if (CvOWNER(cv) && CvOWNER(cv) != thr) {
1790 DEBUG_L((fprintf(stderr, "0x%lx wait for 0x%lx to leave %s\n",
1791 (unsigned long)thr,(unsigned long)CvOWNER(cv),
1793 COND_WAIT(CvCONDP(cv), CvMUTEXP(cv)); /* yawn */
1794 } while (CvOWNER(cv));
1796 CvOWNER(cv) = thr; /* Assert ownership */
1798 MUTEX_UNLOCK(CvMUTEXP(cv));
1799 if (CvDEPTH(cv) == 0)
1800 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
1804 * It's an ordinary unsynchronised CV so we must distinguish
1805 * three cases. (1) It's ours already (and we're recursing);
1806 * (2) it's free (but we may already be using a cached clone);
1807 * (3) another thread owns it. Case (1) is easy: we just use it.
1808 * Case (2) means we look for a clone--if we have one, use it
1809 * otherwise grab ownership of cv. Case (3) means look we for a
1810 * clone and have to create one if we don't already have one.
1811 * Why look for a clone in case (2) when we could just grab
1812 * ownership of cv straight away? Well, we could be recursing,
1813 * i.e. we originally tried to enter cv while another thread
1814 * owned it (hence we used a clone) but it has been freed up
1815 * and we're now recursing into it. It may or may not be "better"
1816 * to use the clone but at least CvDEPTH can be trusted.
1818 if (CvOWNER(cv) == thr)
1819 MUTEX_UNLOCK(CvMUTEXP(cv));
1821 /* Case (2) or (3) */
1825 * XXX Might it be better to release CvMUTEXP(cv) while we
1826 * do the hv_fetch? We might find someone has pinched it
1827 * when we look again, in which case we would be in case
1828 * (3) instead of (2) so we'd have to clone. Would the fact
1829 * that we released the mutex more quickly make up for this?
1831 svp = hv_fetch(cvcache, (char *)cv, sizeof(cv), FALSE);
1833 /* We already have a clone to use */
1834 MUTEX_UNLOCK(CvMUTEXP(cv));
1836 DEBUG_L(fprintf(stderr,
1837 "entersub: 0x%lx already has clone 0x%lx:%s\n",
1838 (unsigned long) thr, (unsigned long) cv,
1842 if (CvDEPTH(cv) == 0)
1843 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
1846 /* (2) => grab ownership of cv. (3) => make clone */
1850 MUTEX_UNLOCK(CvMUTEXP(cv));
1851 DEBUG_L(fprintf(stderr,
1852 "entersub: 0x%lx grabbing 0x%lx:%s\n",
1853 (unsigned long) thr, (unsigned long) cv,
1856 /* Make a new clone. */
1858 SvREFCNT_inc(cv); /* don't let it vanish from under us */
1859 MUTEX_UNLOCK(CvMUTEXP(cv));
1860 DEBUG_L((fprintf(stderr,
1861 "entersub: 0x%lx cloning 0x%lx:%s\n",
1862 (unsigned long) thr, (unsigned long) cv,
1865 * We're creating a new clone so there's no race
1866 * between the original MUTEX_UNLOCK and the
1867 * SvREFCNT_inc since no one will be trying to undef
1868 * it out from underneath us. At least, I don't think
1871 clonecv = cv_clone(cv);
1872 SvREFCNT_dec(cv); /* finished with this */
1873 hv_store(cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0);
1874 CvOWNER(clonecv) = thr;
1878 assert(CvDEPTH(cv) == 0);
1879 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
1883 #endif /* USE_THREADS */
1888 if (CvOLDSTYLE(cv)) {
1889 I32 (*fp3)_((int,int,int));
1891 register I32 items = SP - MARK;
1896 stack_sp = mark + 1;
1897 fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
1898 items = (*fp3)(CvXSUBANY(cv).any_i32,
1899 MARK - stack_base + 1,
1901 stack_sp = stack_base + items;
1904 I32 markix = TOPMARK;
1907 (void)(*CvXSUB(cv))(cv);
1909 /* Enforce some sanity in scalar context. */
1910 if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) {
1911 if (markix > stack_sp - stack_base)
1912 *(stack_base + markix) = &sv_undef;
1914 *(stack_base + markix) = *stack_sp;
1915 stack_sp = stack_base + markix;
1923 register I32 items = SP - MARK;
1924 I32 hasargs = (op->op_flags & OPf_STACKED) != 0;
1925 AV* padlist = CvPADLIST(cv);
1926 SV** svp = AvARRAY(padlist);
1927 push_return(op->op_next);
1928 PUSHBLOCK(cx, CXt_SUB, MARK);
1931 if (CvDEPTH(cv) < 2)
1932 (void)SvREFCNT_inc(cv);
1933 else { /* save temporaries on recursion? */
1934 if (CvDEPTH(cv) == 100 && dowarn)
1935 warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv)));
1936 if (CvDEPTH(cv) > AvFILL(padlist)) {
1938 AV *newpad = newAV();
1939 SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
1940 I32 ix = AvFILL((AV*)svp[1]);
1941 svp = AvARRAY(svp[0]);
1942 for ( ;ix > 0; ix--) {
1943 if (svp[ix] != &sv_undef) {
1944 char *name = SvPVX(svp[ix]);
1945 if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* outer lexical? */
1946 av_store(newpad, ix,
1947 SvREFCNT_inc(oldpad[ix]) );
1949 else { /* our own lexical */
1951 av_store(newpad, ix, sv = (SV*)newAV());
1952 else if (*name == '%')
1953 av_store(newpad, ix, sv = (SV*)newHV());
1955 av_store(newpad, ix, sv = NEWSV(0,0));
1960 av_store(newpad, ix, sv = NEWSV(0,0));
1964 av = newAV(); /* will be @_ */
1966 av_store(newpad, 0, (SV*)av);
1967 AvFLAGS(av) = AVf_REIFY;
1968 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
1969 AvFILL(padlist) = CvDEPTH(cv);
1970 svp = AvARRAY(padlist);
1974 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
1976 AV* av = (AV*)curpad[0];
1983 cx->blk_sub.savearray = GvAV(defgv);
1984 cx->blk_sub.argarray = av;
1985 GvAV(defgv) = cx->blk_sub.argarray;
1988 if (items > AvMAX(av) + 1) {
1990 if (AvARRAY(av) != ary) {
1991 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
1992 SvPVX(av) = (char*)ary;
1994 if (items > AvMAX(av) + 1) {
1995 AvMAX(av) = items - 1;
1996 Renew(ary,items,SV*);
1998 SvPVX(av) = (char*)ary;
2001 Copy(MARK,AvARRAY(av),items,SV*);
2002 AvFILL(av) = items - 1;
2010 RETURNOP(CvSTART(cv));
2020 I32 lval = op->op_flags & OPf_MOD;
2023 elem -= curcop->cop_arybase;
2024 if (SvTYPE(av) != SVt_PVAV)
2026 svp = av_fetch(av, elem, lval);
2028 if (!svp || *svp == &sv_undef)
2029 DIE(no_aelem, elem);
2030 if (op->op_private & OPpLVAL_INTRO)
2032 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
2033 provide_ref(op, *svp);
2035 PUSHs(svp ? *svp : &sv_undef);
2049 (void)SvUPGRADE(sv, SVt_RV);
2050 SvRV(sv) = (o->op_private & OPpDEREF_HV ?
2051 (SV*)newHV() : (SV*)newAV());
2066 sv = *(stack_base + TOPMARK + 1);
2078 !(packname = SvPV(sv, na)) ||
2079 !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
2080 !(ob=(SV*)GvIO(iogv)))
2082 char *name = SvPV(nm, na);
2084 if (!packname || !isALPHA(*packname))
2085 DIE("Can't call method \"%s\" without a package or object reference", name);
2086 if (!(stash = gv_stashpv(packname, FALSE))) {
2087 if (gv_stashpv("UNIVERSAL", FALSE))
2088 stash = gv_stashpv(packname, TRUE);
2090 DIE("Can't call method \"%s\" in empty package \"%s\"",
2093 gv = gv_fetchmethod(stash,name);
2095 DIE("Can't locate object method \"%s\" via package \"%s\"",
2100 *(stack_base + TOPMARK + 1) = sv_2mortal(newRV(iogv));
2103 if (!ob || !SvOBJECT(ob)) {
2104 char *name = SvPV(nm, na);
2105 DIE("Can't call method \"%s\" on unblessed reference", name);
2108 if (!gv) { /* nothing cached */
2109 char *name = SvPV(nm, na);
2110 gv = gv_fetchmethod(SvSTASH(ob),name);
2112 DIE("Can't locate object method \"%s\" via package \"%s\"",
2113 name, HvNAME(SvSTASH(ob)));