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- /* pp_hot.c
- *
- * Copyright (c) 1991-1994, Larry Wall
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Artistic License, as specified in the README file.
- *
- */
-
- /*
- * Then he heard Merry change the note, and up went the Horn-cry of Buckland,
- * shaking the air.
- *
- * Awake! Awake! Fear, Fire, Foes! Awake!
- * Fire, Foes! Awake!
- */
-
- #include "EXTERN.h"
- #include "perl.h"
-
- /* Hot code. */
-
- PP(pp_const)
- {
- dSP;
- XPUSHs(cSVOP->op_sv);
- RETURN;
- }
-
- PP(pp_nextstate)
- {
- curcop = (COP*)op;
- TAINT_NOT; /* Each statement is presumed innocent */
- stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
- FREETMPS;
- return NORMAL;
- }
-
- PP(pp_gvsv)
- {
- dSP;
- EXTEND(sp,1);
- if (op->op_private & OPpLVAL_INTRO)
- PUSHs(save_scalar(cGVOP->op_gv));
- else
- PUSHs(GvSV(cGVOP->op_gv));
- RETURN;
- }
-
- PP(pp_null)
- {
- return NORMAL;
- }
-
- PP(pp_pushmark)
- {
- PUSHMARK(stack_sp);
- return NORMAL;
- }
-
- PP(pp_stringify)
- {
- dSP; dTARGET;
- STRLEN len;
- char *s;
- s = SvPV(TOPs,len);
- sv_setpvn(TARG,s,len);
- SETTARG;
- RETURN;
- }
-
- PP(pp_gv)
- {
- dSP;
- XPUSHs((SV*)cGVOP->op_gv);
- RETURN;
- }
-
- PP(pp_and)
- {
- dSP;
- if (!SvTRUE(TOPs))
- RETURN;
- else {
- --SP;
- RETURNOP(cLOGOP->op_other);
- }
- }
-
- PP(pp_sassign)
- {
- dSP; dPOPTOPssrl;
- MAGIC *mg;
-
- if (op->op_private & OPpASSIGN_BACKWARDS) {
- SV *temp;
- temp = left; left = right; right = temp;
- }
- if (tainting && tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) ||
- !((mg = mg_find(left, 't')) && mg->mg_len & 1)))
- {
- TAINT_NOT;
- }
- SvSetSV(right, left);
- SvSETMAGIC(right);
- SETs(right);
- RETURN;
- }
-
- PP(pp_cond_expr)
- {
- dSP;
- if (SvTRUEx(POPs))
- RETURNOP(cCONDOP->op_true);
- else
- RETURNOP(cCONDOP->op_false);
- }
-
- PP(pp_unstack)
- {
- I32 oldsave;
- TAINT_NOT; /* Each statement is presumed innocent */
- stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
- FREETMPS;
- oldsave = scopestack[scopestack_ix - 1];
- LEAVE_SCOPE(oldsave);
- return NORMAL;
- }
-
- PP(pp_seq)
- {
- dSP; tryAMAGICbinSET(seq,0);
- {
- dPOPTOPssrl;
- SETs( sv_eq(left, right) ? &sv_yes : &sv_no );
- RETURN;
- }
- }
-
- PP(pp_concat)
- {
- dSP; dATARGET; tryAMAGICbin(concat,opASSIGN);
- {
- dPOPTOPssrl;
- STRLEN len;
- char *s;
- if (TARG != left) {
- s = SvPV(left,len);
- sv_setpvn(TARG,s,len);
- }
- else if (!SvOK(TARG))
- sv_setpv(TARG, ""); /* Suppress warning. */
- s = SvPV(right,len);
- sv_catpvn(TARG,s,len);
- SETTARG;
- RETURN;
- }
- }
-
- PP(pp_padsv)
- {
- dSP; dTARGET;
- XPUSHs(TARG);
- if (op->op_private & OPpLVAL_INTRO)
- SAVECLEARSV(curpad[op->op_targ]);
- RETURN;
- }
-
- PP(pp_readline)
- {
- last_in_gv = (GV*)(*stack_sp--);
- return do_readline();
- }
-
- PP(pp_eq)
- {
- dSP; tryAMAGICbinSET(eq,0);
- {
- dPOPnv;
- SETs((TOPn == value) ? &sv_yes : &sv_no);
- RETURN;
- }
- }
-
- PP(pp_preinc)
- {
- dSP;
- if (SvIOK(TOPs)) {
- ++SvIVX(TOPs);
- SvFLAGS(TOPs) &= ~(SVf_NOK|SVf_POK|SVp_NOK|SVp_POK);
- }
- else
- sv_inc(TOPs);
- SvSETMAGIC(TOPs);
- return NORMAL;
- }
-
- PP(pp_or)
- {
- dSP;
- if (SvTRUE(TOPs))
- RETURN;
- else {
- --SP;
- RETURNOP(cLOGOP->op_other);
- }
- }
-
- PP(pp_add)
- {
- dSP; dATARGET; tryAMAGICbin(add,opASSIGN);
- {
- dPOPTOPnnrl;
- SETn( left + right );
- RETURN;
- }
- }
-
- PP(pp_aelemfast)
- {
- dSP;
- AV *av = GvAV((GV*)cSVOP->op_sv);
- SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD);
- PUSHs(svp ? *svp : &sv_undef);
- RETURN;
- }
-
- PP(pp_join)
- {
- dSP; dMARK; dTARGET;
- MARK++;
- do_join(TARG, *MARK, MARK, SP);
- SP = MARK;
- SETs(TARG);
- RETURN;
- }
-
- PP(pp_pushre)
- {
- dSP;
- XPUSHs((SV*)op);
- RETURN;
- }
-
- /* Oversized hot code. */
-
- PP(pp_print)
- {
- dSP; dMARK; dORIGMARK;
- GV *gv;
- IO *io;
- register FILE *fp;
-
- if (op->op_flags & OPf_STACKED)
- gv = (GV*)*++MARK;
- else
- gv = defoutgv;
- if (!(io = GvIO(gv))) {
- if (dowarn) {
- SV* sv = sv_newmortal();
- gv_fullname(sv,gv);
- warn("Filehandle %s never opened", SvPV(sv,na));
- }
-
- SETERRNO(EBADF,RMS$_IFI);
- goto just_say_no;
- }
- else if (!(fp = IoOFP(io))) {
- if (dowarn) {
- SV* sv = sv_newmortal();
- gv_fullname(sv,gv);
- if (IoIFP(io))
- warn("Filehandle %s opened only for input", SvPV(sv,na));
- else
- warn("print on closed filehandle %s", SvPV(sv,na));
- }
- SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
- goto just_say_no;
- }
- else {
- MARK++;
- if (ofslen) {
- while (MARK <= SP) {
- if (!do_print(*MARK, fp))
- break;
- MARK++;
- if (MARK <= SP) {
- if (fwrite1(ofs, 1, ofslen, fp) == 0 || ferror(fp)) {
- MARK--;
- break;
- }
- }
- }
- }
- else {
- while (MARK <= SP) {
- if (!do_print(*MARK, fp))
- break;
- MARK++;
- }
- }
- if (MARK <= SP)
- goto just_say_no;
- else {
- if (orslen)
- if (fwrite1(ors, 1, orslen, fp) == 0 || ferror(fp))
- goto just_say_no;
-
- if (IoFLAGS(io) & IOf_FLUSH)
- if (fflush(fp) == EOF)
- goto just_say_no;
- }
- }
- SP = ORIGMARK;
- PUSHs(&sv_yes);
- RETURN;
-
- just_say_no:
- SP = ORIGMARK;
- PUSHs(&sv_undef);
- RETURN;
- }
-
- PP(pp_rv2av)
- {
- dSP; dPOPss;
-
- AV *av;
-
- if (SvROK(sv)) {
- wasref:
- av = (AV*)SvRV(sv);
- if (SvTYPE(av) != SVt_PVAV)
- DIE("Not an ARRAY reference");
- if (op->op_private & OPpLVAL_INTRO)
- av = (AV*)save_svref((SV**)sv);
- if (op->op_flags & OPf_REF) {
- PUSHs((SV*)av);
- RETURN;
- }
- }
- else {
- if (SvTYPE(sv) == SVt_PVAV) {
- av = (AV*)sv;
- if (op->op_flags & OPf_REF) {
- PUSHs((SV*)av);
- RETURN;
- }
- }
- else {
- if (SvTYPE(sv) != SVt_PVGV) {
- char *sym;
-
- if (SvGMAGICAL(sv)) {
- mg_get(sv);
- if (SvROK(sv))
- goto wasref;
- }
- if (!SvOK(sv)) {
- if (op->op_flags & OPf_REF ||
- op->op_private & HINT_STRICT_REFS)
- DIE(no_usym, "an ARRAY");
- RETPUSHUNDEF;
- }
- sym = SvPV(sv,na);
- if (op->op_private & HINT_STRICT_REFS)
- DIE(no_symref, sym, "an ARRAY");
- sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
- }
- av = GvAVn(sv);
- if (op->op_private & OPpLVAL_INTRO)
- av = save_ary(sv);
- if (op->op_flags & OPf_REF) {
- PUSHs((SV*)av);
- RETURN;
- }
- }
- }
-
- if (GIMME == G_ARRAY) {
- I32 maxarg = AvFILL(av) + 1;
- EXTEND(SP, maxarg);
- Copy(AvARRAY(av), SP+1, maxarg, SV*);
- SP += maxarg;
- }
- else {
- dTARGET;
- I32 maxarg = AvFILL(av) + 1;
- PUSHi(maxarg);
- }
- RETURN;
- }
-
- PP(pp_rv2hv)
- {
-
- dSP; dTOPss;
-
- HV *hv;
-
- if (SvROK(sv)) {
- wasref:
- hv = (HV*)SvRV(sv);
- if (SvTYPE(hv) != SVt_PVHV)
- DIE("Not a HASH reference");
- if (op->op_private & OPpLVAL_INTRO)
- hv = (HV*)save_svref((SV**)sv);
- if (op->op_flags & OPf_REF) {
- SETs((SV*)hv);
- RETURN;
- }
- }
- else {
- if (SvTYPE(sv) == SVt_PVHV) {
- hv = (HV*)sv;
- if (op->op_flags & OPf_REF) {
- SETs((SV*)hv);
- RETURN;
- }
- }
- else {
- if (SvTYPE(sv) != SVt_PVGV) {
- char *sym;
-
- if (SvGMAGICAL(sv)) {
- mg_get(sv);
- if (SvROK(sv))
- goto wasref;
- }
- if (!SvOK(sv)) {
- if (op->op_flags & OPf_REF ||
- op->op_private & HINT_STRICT_REFS)
- DIE(no_usym, "a HASH");
- RETSETUNDEF;
- }
- sym = SvPV(sv,na);
- if (op->op_private & HINT_STRICT_REFS)
- DIE(no_symref, sym, "a HASH");
- sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
- }
- hv = GvHVn(sv);
- if (op->op_private & OPpLVAL_INTRO)
- hv = save_hash(sv);
- if (op->op_flags & OPf_REF) {
- SETs((SV*)hv);
- RETURN;
- }
- }
- }
-
- if (GIMME == G_ARRAY) { /* array wanted */
- *stack_sp = (SV*)hv;
- return do_kv(ARGS);
- }
- else {
- dTARGET;
- if (HvFILL(hv)) {
- sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1);
- sv_setpv(TARG, buf);
- }
- else
- sv_setiv(TARG, 0);
- SETTARG;
- RETURN;
- }
- }
-
- PP(pp_aassign)
- {
- dSP;
- SV **lastlelem = stack_sp;
- SV **lastrelem = stack_base + POPMARK;
- SV **firstrelem = stack_base + POPMARK + 1;
- SV **firstlelem = lastrelem + 1;
-
- register SV **relem;
- register SV **lelem;
-
- register SV *sv;
- register AV *ary;
-
- HV *hash;
- I32 i;
- int magic;
-
- delaymagic = DM_DELAY; /* catch simultaneous items */
-
- /* If there's a common identifier on both sides we have to take
- * special care that assigning the identifier on the left doesn't
- * clobber a value on the right that's used later in the list.
- */
- if (op->op_private & OPpASSIGN_COMMON) {
- for (relem = firstrelem; relem <= lastrelem; relem++) {
- /*SUPPRESS 560*/
- if (sv = *relem)
- *relem = sv_mortalcopy(sv);
- }
- }
-
- relem = firstrelem;
- lelem = firstlelem;
- ary = Null(AV*);
- hash = Null(HV*);
- while (lelem <= lastlelem) {
- sv = *lelem++;
- switch (SvTYPE(sv)) {
- case SVt_PVAV:
- ary = (AV*)sv;
- magic = SvMAGICAL(ary) != 0;
-
- av_clear(ary);
- i = 0;
- while (relem <= lastrelem) { /* gobble up all the rest */
- sv = NEWSV(28,0);
- assert(*relem);
- sv_setsv(sv,*relem);
- *(relem++) = sv;
- (void)av_store(ary,i++,sv);
- if (magic)
- mg_set(sv);
- }
- break;
- case SVt_PVHV: {
- char *tmps;
- SV *tmpstr;
-
- hash = (HV*)sv;
- magic = SvMAGICAL(hash) != 0;
- hv_clear(hash);
-
- while (relem < lastrelem) { /* gobble up all the rest */
- STRLEN len;
- if (*relem)
- sv = *(relem++);
- else
- sv = &sv_no, relem++;
- tmps = SvPV(sv, len);
- tmpstr = NEWSV(29,0);
- if (*relem)
- sv_setsv(tmpstr,*relem); /* value */
- *(relem++) = tmpstr;
- (void)hv_store(hash,tmps,len,tmpstr,0);
- if (magic)
- mg_set(tmpstr);
- }
- }
- break;
- default:
- if (SvTHINKFIRST(sv)) {
- if (SvREADONLY(sv) && curcop != &compiling) {
- if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no)
- DIE(no_modify);
- if (relem <= lastrelem)
- relem++;
- break;
- }
- if (SvROK(sv))
- sv_unref(sv);
- }
- if (relem <= lastrelem) {
- sv_setsv(sv, *relem);
- *(relem++) = sv;
- }
- else
- sv_setsv(sv, &sv_undef);
- SvSETMAGIC(sv);
- break;
- }
- }
- if (delaymagic & ~DM_DELAY) {
- if (delaymagic & DM_UID) {
- #ifdef HAS_SETRESUID
- (void)setresuid(uid,euid,(Uid_t)-1);
- #else
- # ifdef HAS_SETREUID
- (void)setreuid(uid,euid);
- # else
- # ifdef HAS_SETRUID
- if ((delaymagic & DM_UID) == DM_RUID) {
- (void)setruid(uid);
- delaymagic &= ~DM_RUID;
- }
- # endif /* HAS_SETRUID */
- # ifdef HAS_SETEUID
- if ((delaymagic & DM_UID) == DM_EUID) {
- (void)seteuid(uid);
- delaymagic &= ~DM_EUID;
- }
- # endif /* HAS_SETEUID */
- if (delaymagic & DM_UID) {
- if (uid != euid)
- DIE("No setreuid available");
- (void)setuid(uid);
- }
- # endif /* HAS_SETREUID */
- #endif /* HAS_SETRESUID */
- uid = (int)getuid();
- euid = (int)geteuid();
- }
- if (delaymagic & DM_GID) {
- #ifdef HAS_SETRESGID
- (void)setresgid(gid,egid,(Gid_t)-1);
- #else
- # ifdef HAS_SETREGID
- (void)setregid(gid,egid);
- # else
- # ifdef HAS_SETRGID
- if ((delaymagic & DM_GID) == DM_RGID) {
- (void)setrgid(gid);
- delaymagic &= ~DM_RGID;
- }
- # endif /* HAS_SETRGID */
- # ifdef HAS_SETEGID
- if ((delaymagic & DM_GID) == DM_EGID) {
- (void)setegid(gid);
- delaymagic &= ~DM_EGID;
- }
- # endif /* HAS_SETEGID */
- if (delaymagic & DM_GID) {
- if (gid != egid)
- DIE("No setregid available");
- (void)setgid(gid);
- }
- # endif /* HAS_SETREGID */
- #endif /* HAS_SETRESGID */
- gid = (int)getgid();
- egid = (int)getegid();
- }
- tainting |= (euid != uid || egid != gid);
- }
- delaymagic = 0;
- if (GIMME == G_ARRAY) {
- if (ary || hash)
- SP = lastrelem;
- else
- SP = firstrelem + (lastlelem - firstlelem);
- RETURN;
- }
- else {
- SP = firstrelem;
- for (relem = firstrelem; relem <= lastrelem; ++relem) {
- if (SvOK(*relem)) {
- dTARGET;
-
- SETi(lastrelem - firstrelem + 1);
- RETURN;
- }
- }
- RETSETUNDEF;
- }
- }
-
- PP(pp_match)
- {
- dSP; dTARG;
- register PMOP *pm = cPMOP;
- register char *t;
- register char *s;
- char *strend;
- I32 global;
- I32 safebase;
- char *truebase;
- register REGEXP *rx = pm->op_pmregexp;
- I32 gimme = GIMME;
- STRLEN len;
- I32 minmatch = 0;
-
- if (op->op_flags & OPf_STACKED)
- TARG = POPs;
- else {
- TARG = GvSV(defgv);
- EXTEND(SP,1);
- }
- s = SvPV(TARG, len);
- strend = s + len;
- if (!s)
- DIE("panic: do_match");
-
- if (pm->op_pmflags & PMf_USED) {
- if (gimme == G_ARRAY)
- RETURN;
- RETPUSHNO;
- }
-
- if (!rx->prelen && curpm) {
- pm = curpm;
- rx = pm->op_pmregexp;
- }
- truebase = t = s;
- if (global = pm->op_pmflags & PMf_GLOBAL) {
- rx->startp[0] = 0;
- if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
- MAGIC* mg = mg_find(TARG, 'g');
- if (mg && mg->mg_len >= 0) {
- rx->endp[0] = rx->startp[0] = s + mg->mg_len;
- minmatch = (mg->mg_flags & MGf_MINMATCH);
- }
- }
- }
- if (!rx->nparens && !global)
- gimme = G_SCALAR; /* accidental array context? */
- safebase = (gimme == G_ARRAY) || global;
- if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
- SAVEINT(multiline);
- multiline = pm->op_pmflags & PMf_MULTILINE;
- }
-
- play_it_again:
- if (global && rx->startp[0]) {
- t = s = rx->endp[0];
- if (s > strend)
- goto nope;
- minmatch = (s == rx->startp[0]);
- }
- if (pm->op_pmshort) {
- if (pm->op_pmflags & PMf_SCANFIRST) {
- if (SvSCREAM(TARG)) {
- if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
- goto nope;
- else if (!(s = screaminstr(TARG, pm->op_pmshort)))
- goto nope;
- else if (pm->op_pmflags & PMf_ALL)
- goto yup;
- }
- else if (!(s = fbm_instr((unsigned char*)s,
- (unsigned char*)strend, pm->op_pmshort)))
- goto nope;
- else if (pm->op_pmflags & PMf_ALL)
- goto yup;
- if (s && rx->regback >= 0) {
- ++BmUSEFUL(pm->op_pmshort);
- s -= rx->regback;
- if (s < t)
- s = t;
- }
- else
- s = t;
- }
- else if (!multiline) {
- if (*SvPVX(pm->op_pmshort) != *s ||
- bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
- if (pm->op_pmflags & PMf_FOLD) {
- if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
- goto nope;
- }
- else
- goto nope;
- }
- }
- if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
- SvREFCNT_dec(pm->op_pmshort);
- pm->op_pmshort = Nullsv; /* opt is being useless */
- }
- }
- if (pregexec(rx, s, strend, truebase, minmatch,
- SvSCREAM(TARG) ? TARG : Nullsv,
- safebase)) {
- curpm = pm;
- if (pm->op_pmflags & PMf_ONCE)
- pm->op_pmflags |= PMf_USED;
- goto gotcha;
- }
- else
- goto ret_no;
- /*NOTREACHED*/
-
- gotcha:
- if (gimme == G_ARRAY) {
- I32 iters, i, len;
-
- iters = rx->nparens;
- if (global && !iters)
- i = 1;
- else
- i = 0;
- EXTEND(SP, iters + i);
- for (i = !i; i <= iters; i++) {
- PUSHs(sv_newmortal());
- /*SUPPRESS 560*/
- if ((s = rx->startp[i]) && rx->endp[i] ) {
- len = rx->endp[i] - s;
- sv_setpvn(*SP, s, len);
- }
- }
- if (global) {
- truebase = rx->subbeg;
- if (rx->startp[0] && rx->startp[0] == rx->endp[0])
- ++rx->endp[0];
- goto play_it_again;
- }
- RETURN;
- }
- else {
- if (global) {
- MAGIC* mg = 0;
- if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG))
- mg = mg_find(TARG, 'g');
- if (!mg) {
- sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
- mg = mg_find(TARG, 'g');
- }
- if (rx->startp[0]) {
- mg->mg_len = rx->endp[0] - truebase;
- if (rx->startp[0] == rx->endp[0])
- mg->mg_flags |= MGf_MINMATCH;
- else
- mg->mg_flags &= ~MGf_MINMATCH;
- }
- else
- mg->mg_len = -1;
- }
- RETPUSHYES;
- }
-
- yup:
- ++BmUSEFUL(pm->op_pmshort);
- curpm = pm;
- if (pm->op_pmflags & PMf_ONCE)
- pm->op_pmflags |= PMf_USED;
- if (global) {
- rx->subbeg = truebase;
- rx->subend = strend;
- rx->startp[0] = s;
- rx->endp[0] = s + SvCUR(pm->op_pmshort);
- goto gotcha;
- }
- if (sawampersand) {
- char *tmps;
-
- if (rx->subbase)
- Safefree(rx->subbase);
- tmps = rx->subbase = savepvn(t, strend-t);
- rx->subbeg = tmps;
- rx->subend = tmps + (strend-t);
- tmps = rx->startp[0] = tmps + (s - t);
- rx->endp[0] = tmps + SvCUR(pm->op_pmshort);
- }
- RETPUSHYES;
-
- nope:
- if (pm->op_pmshort)
- ++BmUSEFUL(pm->op_pmshort);
-
- ret_no:
- if (global) {
- if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
- MAGIC* mg = mg_find(TARG, 'g');
- if (mg)
- mg->mg_len = -1;
- }
- }
- if (gimme == G_ARRAY)
- RETURN;
- RETPUSHNO;
- }
-
- OP *
- do_readline()
- {
- dSP; dTARGETSTACKED;
- register SV *sv;
- STRLEN tmplen = 0;
- STRLEN offset;
- FILE *fp;
- register IO *io = GvIO(last_in_gv);
- register I32 type = op->op_type;
-
- fp = Nullfp;
- if (io) {
- fp = IoIFP(io);
- if (!fp) {
- if (IoFLAGS(io) & IOf_ARGV) {
- if (IoFLAGS(io) & IOf_START) {
- IoFLAGS(io) &= ~IOf_START;
- IoLINES(io) = 0;
- if (av_len(GvAVn(last_in_gv)) < 0) {
- SV *tmpstr = newSVpv("-", 1); /* assume stdin */
- av_push(GvAVn(last_in_gv), tmpstr);
- }
- }
- fp = nextargv(last_in_gv);
- if (!fp) { /* Note: fp != IoIFP(io) */
- (void)do_close(last_in_gv, FALSE); /* now it does*/
- IoFLAGS(io) |= IOf_START;
- }
- }
- else if (type == OP_GLOB) {
- SV *tmpcmd = NEWSV(55, 0);
- SV *tmpglob = POPs;
- ENTER;
- SAVEFREESV(tmpcmd);
- #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
- /* since spawning off a process is a real performance hit */
- {
- #include <descrip.h>
- #include <lib$routines.h>
- #include <nam.h>
- #include <rmsdef.h>
- char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
- char vmsspec[NAM$C_MAXRSS+1];
- char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
- char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
- $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
- FILE *tmpfp;
- STRLEN i;
- struct dsc$descriptor_s wilddsc
- = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
- struct dsc$descriptor_vs rsdsc
- = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
- unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
-
- /* We could find out if there's an explicit dev/dir or version
- by peeking into lib$find_file's internal context at
- ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
- but that's unsupported, so I don't want to do it now and
- have it bite someone in the future. */
- strcat(tmpfnam,tmpnam(NULL));
- cp = SvPV(tmpglob,i);
- for (; i; i--) {
- if (cp[i] == ';') hasver = 1;
- if (cp[i] == '.') {
- if (sts) hasver = 1;
- else sts = 1;
- }
- if (cp[i] == '/') {
- hasdir = isunix = 1;
- break;
- }
- if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
- hasdir = 1;
- break;
- }
- }
- if ((tmpfp = fopen(tmpfnam,"w+","fop=dlt")) != NULL) {
- ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
- if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
- while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
- &dfltdsc,NULL,NULL,NULL))&1)) {
- end = rstr + (unsigned long int) *rslt;
- if (!hasver) while (*end != ';') end--;
- *(end++) = '\n'; *end = '\0';
- for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
- if (hasdir) {
- if (isunix) trim_unixpath(SvPVX(tmpglob),rstr);
- begin = rstr;
- }
- else {
- begin = end;
- while (*(--begin) != ']' && *begin != '>') ;
- ++begin;
- }
- ok = (fputs(begin,tmpfp) != EOF);
- }
- if (cxt) (void)lib$find_file_end(&cxt);
- if (ok && sts != RMS$_NMF &&
- sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
- if (!ok) {
- fp = NULL;
- }
- else {
- rewind(tmpfp);
- IoTYPE(io) = '<';
- IoIFP(io) = fp = tmpfp;
- }
- }
- }
- #else /* !VMS */
- #ifdef DOSISH
- sv_setpv(tmpcmd, "perlglob ");
- sv_catsv(tmpcmd, tmpglob);
- sv_catpv(tmpcmd, " |");
- #else
- #ifdef CSH
- sv_setpvn(tmpcmd, cshname, cshlen);
- sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
- sv_catsv(tmpcmd, tmpglob);
- sv_catpv(tmpcmd, "' 2>/dev/null |");
- #else
- sv_setpv(tmpcmd, "echo ");
- sv_catsv(tmpcmd, tmpglob);
- #if 'z' - 'a' == 25
- sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
- #else
- sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
- #endif
- #endif /* !CSH */
- #endif /* !MSDOS */
- (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),Nullfp);
- fp = IoIFP(io);
- #endif /* !VMS */
- LEAVE;
- }
- }
- else if (type == OP_GLOB)
- SP--;
- }
- if (!fp) {
- if (dowarn && !(IoFLAGS(io) & IOf_START))
- warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
- if (GIMME == G_SCALAR) {
- (void)SvOK_off(TARG);
- PUSHTARG;
- }
- RETURN;
- }
- if (GIMME == G_ARRAY) {
- sv = sv_2mortal(NEWSV(57, 80));
- offset = 0;
- }
- else {
- sv = TARG;
- (void)SvUPGRADE(sv, SVt_PV);
- tmplen = SvLEN(sv); /* remember if already alloced */
- if (!tmplen)
- Sv_Grow(sv, 80); /* try short-buffering it */
- if (type == OP_RCATLINE)
- offset = SvCUR(sv);
- else
- offset = 0;
- }
- for (;;) {
- if (!sv_gets(sv, fp, offset)) {
- clearerr(fp);
- if (IoFLAGS(io) & IOf_ARGV) {
- fp = nextargv(last_in_gv);
- if (fp)
- continue;
- (void)do_close(last_in_gv, FALSE);
- IoFLAGS(io) |= IOf_START;
- }
- else if (type == OP_GLOB) {
- (void)do_close(last_in_gv, FALSE);
- }
- if (GIMME == G_SCALAR) {
- (void)SvOK_off(TARG);
- PUSHTARG;
- }
- RETURN;
- }
- IoLINES(io)++;
- XPUSHs(sv);
- if (tainting) {
- tainted = TRUE;
- SvTAINT(sv); /* Anything from the outside world...*/
- }
- if (type == OP_GLOB) {
- char *tmps;
-
- if (SvCUR(sv) > 0)
- SvCUR(sv)--;
- if (*SvEND(sv) == rschar)
- *SvEND(sv) = '\0';
- else
- SvCUR(sv)++;
- for (tmps = SvPVX(sv); *tmps; tmps++)
- if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
- strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
- break;
- if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) {
- (void)POPs; /* Unmatched wildcard? Chuck it... */
- continue;
- }
- }
- if (GIMME == G_ARRAY) {
- if (SvLEN(sv) - SvCUR(sv) > 20) {
- SvLEN_set(sv, SvCUR(sv)+1);
- Renew(SvPVX(sv), SvLEN(sv), char);
- }
- sv = sv_2mortal(NEWSV(58, 80));
- continue;
- }
- else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
- /* try to reclaim a bit of scalar space (only on 1st alloc) */
- if (SvCUR(sv) < 60)
- SvLEN_set(sv, 80);
- else
- SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */
- Renew(SvPVX(sv), SvLEN(sv), char);
- }
- RETURN;
- }
- }
-
- PP(pp_enter)
- {
- dSP;
- register CONTEXT *cx;
- I32 gimme;
-
- /*
- * We don't just use the GIMME macro here because it assumes there's
- * already a context, which ain't necessarily so at initial startup.
- */
-
- if (op->op_flags & OPf_KNOW)
- gimme = op->op_flags & OPf_LIST;
- else if (cxstack_ix >= 0)
- gimme = cxstack[cxstack_ix].blk_gimme;
- else
- gimme = G_SCALAR;
-
- ENTER;
-
- SAVETMPS;
- PUSHBLOCK(cx, CXt_BLOCK, sp);
-
- RETURN;
- }
-
- PP(pp_helem)
- {
- dSP;
- SV** svp;
- SV *keysv = POPs;
- STRLEN keylen;
- char *key = SvPV(keysv, keylen);
- HV *hv = (HV*)POPs;
- I32 lval = op->op_flags & OPf_MOD;
-
- if (SvTYPE(hv) != SVt_PVHV)
- RETPUSHUNDEF;
- svp = hv_fetch(hv, key, keylen, lval);
- if (lval) {
- if (!svp || *svp == &sv_undef)
- DIE(no_helem, key);
- if (op->op_private & OPpLVAL_INTRO)
- save_svref(svp);
- else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) {
- SV* sv = *svp;
- if (SvGMAGICAL(sv))
- mg_get(sv);
- if (!SvOK(sv)) {
- (void)SvUPGRADE(sv, SVt_RV);
- SvRV(sv) = (op->op_private & OPpDEREF_HV ?
- (SV*)newHV() : (SV*)newAV());
- SvROK_on(sv);
- SvSETMAGIC(sv);
- }
- }
- }
- PUSHs(svp ? *svp : &sv_undef);
- RETURN;
- }
-
- PP(pp_leave)
- {
- dSP;
- register CONTEXT *cx;
- register SV **mark;
- SV **newsp;
- PMOP *newpm;
- I32 gimme;
-
- if (op->op_flags & OPf_SPECIAL) {
- cx = &cxstack[cxstack_ix];
- cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */
- }
-
- POPBLOCK(cx,newpm);
-
- if (op->op_flags & OPf_KNOW)
- gimme = op->op_flags & OPf_LIST;
- else if (cxstack_ix >= 0)
- gimme = cxstack[cxstack_ix].blk_gimme;
- else
- gimme = G_SCALAR;
-
- if (gimme == G_SCALAR) {
- if (op->op_private & OPpLEAVE_VOID)
- SP = newsp;
- else {
- MARK = newsp + 1;
- if (MARK <= SP)
- if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
- *MARK = TOPs;
- else
- *MARK = sv_mortalcopy(TOPs);
- else {
- MEXTEND(mark,0);
- *MARK = &sv_undef;
- }
- SP = MARK;
- }
- }
- else {
- for (mark = newsp + 1; mark <= SP; mark++)
- if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP)))
- *mark = sv_mortalcopy(*mark);
- /* in case LEAVE wipes old return values */
- }
- curpm = newpm; /* Don't pop $1 et al till now */
-
- LEAVE;
-
- RETURN;
- }
-
- PP(pp_iter)
- {
- dSP;
- register CONTEXT *cx;
- SV *sv;
-
- EXTEND(sp, 1);
- cx = &cxstack[cxstack_ix];
- if (cx->cx_type != CXt_LOOP)
- DIE("panic: pp_iter");
-
- if (cx->blk_loop.iterix >= cx->blk_oldsp)
- RETPUSHNO;
-
- if (sv = AvARRAY(cx->blk_loop.iterary)[++cx->blk_loop.iterix]) {
- SvTEMP_off(sv);
- *cx->blk_loop.itervar = sv;
- }
- else
- *cx->blk_loop.itervar = &sv_undef;
-
- RETPUSHYES;
- }
-
- PP(pp_subst)
- {
- dSP; dTARG;
- register PMOP *pm = cPMOP;
- PMOP *rpm = pm;
- register SV *dstr;
- register char *s;
- char *strend;
- register char *m;
- char *c;
- register char *d;
- STRLEN clen;
- I32 iters = 0;
- I32 maxiters;
- register I32 i;
- bool once;
- char *orig;
- I32 safebase;
- register REGEXP *rx = pm->op_pmregexp;
- STRLEN len;
- int force_on_match = 0;
-
- if (pm->op_pmflags & PMf_CONST) /* known replacement string? */
- dstr = POPs;
- if (op->op_flags & OPf_STACKED)
- TARG = POPs;
- else {
- TARG = GvSV(defgv);
- EXTEND(SP,1);
- }
- s = SvPV(TARG, len);
- if (!SvPOKp(TARG) || SvREADONLY(TARG))
- force_on_match = 1;
-
- force_it:
- if (!pm || !s)
- DIE("panic: do_subst");
-
- strend = s + len;
- maxiters = (strend - s) + 10;
-
- if (!rx->prelen && curpm) {
- pm = curpm;
- rx = pm->op_pmregexp;
- }
- safebase = ((!rx || !rx->nparens) && !sawampersand);
- if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
- SAVEINT(multiline);
- multiline = pm->op_pmflags & PMf_MULTILINE;
- }
- orig = m = s;
- if (pm->op_pmshort) {
- if (pm->op_pmflags & PMf_SCANFIRST) {
- if (SvSCREAM(TARG)) {
- if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
- goto nope;
- else if (!(s = screaminstr(TARG, pm->op_pmshort)))
- goto nope;
- }
- else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend,
- pm->op_pmshort)))
- goto nope;
- if (s && rx->regback >= 0) {
- ++BmUSEFUL(pm->op_pmshort);
- s -= rx->regback;
- if (s < m)
- s = m;
- }
- else
- s = m;
- }
- else if (!multiline) {
- if (*SvPVX(pm->op_pmshort) != *s ||
- bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
- if (pm->op_pmflags & PMf_FOLD) {
- if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
- goto nope;
- }
- else
- goto nope;
- }
- }
- if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
- SvREFCNT_dec(pm->op_pmshort);
- pm->op_pmshort = Nullsv; /* opt is being useless */
- }
- }
- once = !(rpm->op_pmflags & PMf_GLOBAL);
- if (rpm->op_pmflags & PMf_CONST) { /* known replacement string? */
- c = SvPV(dstr, clen);
- if (clen <= rx->minlen) {
- /* can do inplace substitution */
- if (pregexec(rx, s, strend, orig, 0,
- SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
- if (force_on_match) {
- force_on_match = 0;
- s = SvPV_force(TARG, len);
- goto force_it;
- }
- if (rx->subbase) /* oops, no we can't */
- goto long_way;
- d = s;
- curpm = pm;
- SvSCREAM_off(TARG); /* disable possible screamer */
- if (once) {
- m = rx->startp[0];
- d = rx->endp[0];
- s = orig;
- if (m - s > strend - d) { /* faster to shorten from end */
- if (clen) {
- Copy(c, m, clen, char);
- m += clen;
- }
- i = strend - d;
- if (i > 0) {
- Move(d, m, i, char);
- m += i;
- }
- *m = '\0';
- SvCUR_set(TARG, m - s);
- (void)SvPOK_only(TARG);
- SvSETMAGIC(TARG);
- PUSHs(&sv_yes);
- RETURN;
- }
- /*SUPPRESS 560*/
- else if (i = m - s) { /* faster from front */
- d -= clen;
- m = d;
- sv_chop(TARG, d-i);
- s += i;
- while (i--)
- *--d = *--s;
- if (clen)
- Copy(c, m, clen, char);
- (void)SvPOK_only(TARG);
- SvSETMAGIC(TARG);
- PUSHs(&sv_yes);
- RETURN;
- }
- else if (clen) {
- d -= clen;
- sv_chop(TARG, d);
- Copy(c, d, clen, char);
- (void)SvPOK_only(TARG);
- SvSETMAGIC(TARG);
- PUSHs(&sv_yes);
- RETURN;
- }
- else {
- sv_chop(TARG, d);
- (void)SvPOK_only(TARG);
- SvSETMAGIC(TARG);
- PUSHs(&sv_yes);
- RETURN;
- }
- /* NOTREACHED */
- }
- do {
- if (iters++ > maxiters)
- DIE("Substitution loop");
- m = rx->startp[0];
- /*SUPPRESS 560*/
- if (i = m - s) {
- if (s != d)
- Move(s, d, i, char);
- d += i;
- }
- if (clen) {
- Copy(c, d, clen, char);
- d += clen;
- }
- s = rx->endp[0];
- } while (pregexec(rx, s, strend, orig, s == m,
- Nullsv, TRUE)); /* (don't match same null twice) */
- if (s != d) {
- i = strend - s;
- SvCUR_set(TARG, d - SvPVX(TARG) + i);
- Move(s, d, i+1, char); /* include the Null */
- }
- (void)SvPOK_only(TARG);
- SvSETMAGIC(TARG);
- PUSHs(sv_2mortal(newSViv((I32)iters)));
- RETURN;
- }
- PUSHs(&sv_no);
- RETURN;
- }
- }
- else
- c = Nullch;
- if (pregexec(rx, s, strend, orig, 0,
- SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
- long_way:
- if (force_on_match) {
- force_on_match = 0;
- s = SvPV_force(TARG, len);
- goto force_it;
- }
- dstr = NEWSV(25, sv_len(TARG));
- sv_setpvn(dstr, m, s-m);
- curpm = pm;
- if (!c) {
- register CONTEXT *cx;
- PUSHSUBST(cx);
- RETURNOP(cPMOP->op_pmreplroot);
- }
- do {
- if (iters++ > maxiters)
- DIE("Substitution loop");
- if (rx->subbase && rx->subbase != orig) {
- m = s;
- s = orig;
- orig = rx->subbase;
- s = orig + (m - s);
- strend = s + (strend - m);
- }
- m = rx->startp[0];
- sv_catpvn(dstr, s, m-s);
- s = rx->endp[0];
- if (clen)
- sv_catpvn(dstr, c, clen);
- if (once)
- break;
- } while (pregexec(rx, s, strend, orig, s == m, Nullsv,
- safebase));
- sv_catpvn(dstr, s, strend - s);
-
- Safefree(SvPVX(TARG));
- SvPVX(TARG) = SvPVX(dstr);
- SvCUR_set(TARG, SvCUR(dstr));
- SvLEN_set(TARG, SvLEN(dstr));
- SvPVX(dstr) = 0;
- sv_free(dstr);
-
- (void)SvPOK_only(TARG);
- SvSETMAGIC(TARG);
- PUSHs(sv_2mortal(newSViv((I32)iters)));
- RETURN;
- }
- PUSHs(&sv_no);
- RETURN;
-
- nope:
- ++BmUSEFUL(pm->op_pmshort);
- PUSHs(&sv_no);
- RETURN;
- }
-
- PP(pp_grepwhile)
- {
- dSP;
-
- if (SvTRUEx(POPs))
- stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr];
- ++*markstack_ptr;
- LEAVE; /* exit inner scope */
-
- /* All done yet? */
- if (stack_base + *markstack_ptr > sp) {
- I32 items;
-
- LEAVE; /* exit outer scope */
- (void)POPMARK; /* pop src */
- items = --*markstack_ptr - markstack_ptr[-1];
- (void)POPMARK; /* pop dst */
- SP = stack_base + POPMARK; /* pop original mark */
- if (GIMME != G_ARRAY) {
- dTARGET;
- XPUSHi(items);
- RETURN;
- }
- SP += items;
- RETURN;
- }
- else {
- SV *src;
-
- ENTER; /* enter inner scope */
- SAVESPTR(curpm);
-
- src = stack_base[*markstack_ptr];
- SvTEMP_off(src);
- GvSV(defgv) = src;
-
- RETURNOP(cLOGOP->op_other);
- }
- }
-
- PP(pp_leavesub)
- {
- dSP;
- SV **mark;
- SV **newsp;
- PMOP *newpm;
- I32 gimme;
- register CONTEXT *cx;
-
- POPBLOCK(cx,newpm);
- POPSUB(cx);
-
- if (gimme == G_SCALAR) {
- MARK = newsp + 1;
- if (MARK <= SP)
- if (SvFLAGS(TOPs) & SVs_TEMP)
- *MARK = TOPs;
- else
- *MARK = sv_mortalcopy(TOPs);
- else {
- MEXTEND(mark,0);
- *MARK = &sv_undef;
- }
- SP = MARK;
- }
- else {
- for (mark = newsp + 1; mark <= SP; mark++)
- if (!(SvFLAGS(*mark) & SVs_TEMP))
- *mark = sv_mortalcopy(*mark);
- /* in case LEAVE wipes old return values */
- }
-
- if (cx->blk_sub.hasargs) { /* You don't exist; go away. */
- AV* av = cx->blk_sub.argarray;
-
- av_clear(av);
- AvREAL_off(av);
- }
- curpm = newpm; /* Don't pop $1 et al till now */
-
- LEAVE;
- PUTBACK;
- return pop_return();
- }
-
- PP(pp_entersub)
- {
- dSP; dPOPss;
- GV *gv;
- HV *stash;
- register CV *cv;
- register CONTEXT *cx;
- I32 gimme;
-
- if (!sv)
- DIE("Not a CODE reference");
- switch (SvTYPE(sv)) {
- default:
- if (!SvROK(sv)) {
- char *sym;
-
- if (sv == &sv_yes) /* unfound import, ignore */
- RETURN;
- if (!SvOK(sv))
- DIE(no_usym, "a subroutine");
- sym = SvPV(sv,na);
- if (op->op_private & HINT_STRICT_REFS)
- DIE(no_symref, sym, "a subroutine");
- cv = perl_get_cv(sym, TRUE);
- break;
- }
- cv = (CV*)SvRV(sv);
- if (SvTYPE(cv) == SVt_PVCV)
- break;
- /* FALL THROUGH */
- case SVt_PVHV:
- case SVt_PVAV:
- DIE("Not a CODE reference");
- case SVt_PVCV:
- cv = (CV*)sv;
- break;
- case SVt_PVGV:
- if (!(cv = GvCV((GV*)sv)))
- cv = sv_2cv(sv, &stash, &gv, TRUE);
- break;
- }
-
- ENTER;
- SAVETMPS;
-
- retry:
- if (!cv)
- DIE("Not a CODE reference");
-
- if (!CvROOT(cv) && !CvXSUB(cv)) {
- if (gv = CvGV(cv)) {
- SV *tmpstr = sv_newmortal();
- GV *ngv;
- gv_efullname(tmpstr, gv);
- ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD");
- if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */
- gv = ngv;
- sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */
- goto retry;
- }
- else
- DIE("Undefined subroutine &%s called",SvPVX(tmpstr));
- }
- DIE("Undefined subroutine called");
- }
-
- if ((op->op_private & OPpDEREF_DB) && !CvXSUB(cv)) {
- sv = GvSV(DBsub);
- save_item(sv);
- if (SvFLAGS(cv) & SVpcv_ANON) /* Is GV potentially non-unique? */
- sv_setsv(sv, newRV((SV*)cv));
- else {
- gv = CvGV(cv);
- gv_efullname(sv,gv);
- }
- cv = GvCV(DBsub);
- if (!cv)
- DIE("No DBsub routine");
- }
-
- gimme = GIMME;
-
- if (CvXSUB(cv)) {
- if (CvOLDSTYLE(cv)) {
- I32 (*fp3)_((int,int,int));
- dMARK;
- register I32 items = SP - MARK;
- while (sp > mark) {
- sp[1] = sp[0];
- sp--;
- }
- stack_sp = mark + 1;
- fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
- items = (*fp3)(CvXSUBANY(cv).any_i32,
- MARK - stack_base + 1,
- items);
- stack_sp = stack_base + items;
- }
- else {
- I32 markix = TOPMARK;
-
- PUTBACK;
- (void)(*CvXSUB(cv))(cv);
-
- /* Enforce some sanity in scalar context. */
- if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) {
- if (markix > stack_sp - stack_base)
- *(stack_base + markix) = &sv_undef;
- else
- *(stack_base + markix) = *stack_sp;
- stack_sp = stack_base + markix;
- }
- }
- LEAVE;
- return NORMAL;
- }
- else {
- dMARK;
- register I32 items = SP - MARK;
- I32 hasargs = (op->op_flags & OPf_STACKED) != 0;
- AV* padlist = CvPADLIST(cv);
- SV** svp = AvARRAY(padlist);
- push_return(op->op_next);
- PUSHBLOCK(cx, CXt_SUB, MARK);
- PUSHSUB(cx);
- CvDEPTH(cv)++;
- if (CvDEPTH(cv) < 2)
- (void)SvREFCNT_inc(cv);
- else { /* save temporaries on recursion? */
- if (CvDEPTH(cv) == 100 && dowarn)
- warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv)));
- if (CvDEPTH(cv) > AvFILL(padlist)) {
- AV *av;
- AV *newpad = newAV();
- SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
- I32 ix = AvFILL((AV*)svp[1]);
- svp = AvARRAY(svp[0]);
- for ( ;ix > 0; ix--) {
- if (svp[ix] != &sv_undef) {
- char *name = SvPVX(svp[ix]);
- if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* outer lexical? */
- av_store(newpad, ix,
- SvREFCNT_inc(oldpad[ix]) );
- }
- else { /* our own lexical */
- if (*name == '@')
- av_store(newpad, ix, sv = (SV*)newAV());
- else if (*name == '%')
- av_store(newpad, ix, sv = (SV*)newHV());
- else
- av_store(newpad, ix, sv = NEWSV(0,0));
- SvPADMY_on(sv);
- }
- }
- else {
- av_store(newpad, ix, sv = NEWSV(0,0));
- SvPADTMP_on(sv);
- }
- }
- av = newAV(); /* will be @_ */
- av_extend(av, 0);
- av_store(newpad, 0, (SV*)av);
- AvFLAGS(av) = AVf_REIFY;
- av_store(padlist, CvDEPTH(cv), (SV*)newpad);
- AvFILL(padlist) = CvDEPTH(cv);
- svp = AvARRAY(padlist);
- }
- }
- SAVESPTR(curpad);
- curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
- if (hasargs) {
- AV* av = (AV*)curpad[0];
- SV** ary;
-
- if (AvREAL(av)) {
- av_clear(av);
- AvREAL_off(av);
- }
- cx->blk_sub.savearray = GvAV(defgv);
- cx->blk_sub.argarray = av;
- GvAV(defgv) = cx->blk_sub.argarray;
- ++MARK;
-
- if (items > AvMAX(av) + 1) {
- ary = AvALLOC(av);
- if (AvARRAY(av) != ary) {
- AvMAX(av) += AvARRAY(av) - AvALLOC(av);
- SvPVX(av) = (char*)ary;
- }
- if (items > AvMAX(av) + 1) {
- AvMAX(av) = items - 1;
- Renew(ary,items,SV*);
- AvALLOC(av) = ary;
- SvPVX(av) = (char*)ary;
- }
- }
- Copy(MARK,AvARRAY(av),items,SV*);
- AvFILL(av) = items - 1;
-
- while (items--) {
- if (*MARK)
- SvTEMP_off(*MARK);
- MARK++;
- }
- }
- RETURNOP(CvSTART(cv));
- }
- }
-
- PP(pp_aelem)
- {
- dSP;
- SV** svp;
- I32 elem = POPi;
- AV *av = (AV*)POPs;
- I32 lval = op->op_flags & OPf_MOD;
-
- if (elem > 0)
- elem -= curcop->cop_arybase;
- if (SvTYPE(av) != SVt_PVAV)
- RETPUSHUNDEF;
- svp = av_fetch(av, elem, lval);
- if (lval) {
- if (!svp || *svp == &sv_undef)
- DIE(no_aelem, elem);
- if (op->op_private & OPpLVAL_INTRO)
- save_svref(svp);
- else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) {
- SV* sv = *svp;
- if (SvGMAGICAL(sv))
- mg_get(sv);
- if (!SvOK(sv)) {
- (void)SvUPGRADE(sv, SVt_RV);
- SvRV(sv) = (op->op_private & OPpDEREF_HV ?
- (SV*)newHV() : (SV*)newAV());
- SvROK_on(sv);
- SvSETMAGIC(sv);
- }
- }
- }
- PUSHs(svp ? *svp : &sv_undef);
- RETURN;
- }
-
- PP(pp_method)
- {
- dSP;
- SV* sv;
- SV* ob;
- GV* gv;
- SV* nm;
-
- nm = TOPs;
- sv = *(stack_base + TOPMARK + 1);
-
- gv = 0;
- if (SvGMAGICAL(sv))
- mg_get(sv);
- if (SvROK(sv))
- ob = (SV*)SvRV(sv);
- else {
- GV* iogv;
- char* packname = 0;
-
- if (!SvOK(sv) ||
- !(packname = SvPV(sv, na)) ||
- !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
- !(ob=(SV*)GvIO(iogv)))
- {
- char *name = SvPV(nm, na);
- HV *stash;
- if (!packname || !isALPHA(*packname))
- DIE("Can't call method \"%s\" without a package or object reference", name);
- if (!(stash = gv_stashpv(packname, FALSE))) {
- if (gv_stashpv("UNIVERSAL", FALSE))
- stash = gv_stashpv(packname, TRUE);
- else
- DIE("Can't call method \"%s\" in empty package \"%s\"",
- name, packname);
- }
- gv = gv_fetchmethod(stash,name);
- if (!gv)
- DIE("Can't locate object method \"%s\" via package \"%s\"",
- name, packname);
- SETs(gv);
- RETURN;
- }
- *(stack_base + TOPMARK + 1) = iogv;
- }
-
- if (!ob || !SvOBJECT(ob)) {
- char *name = SvPV(nm, na);
- DIE("Can't call method \"%s\" on unblessed reference", name);
- }
-
- if (!gv) { /* nothing cached */
- char *name = SvPV(nm, na);
- gv = gv_fetchmethod(SvSTASH(ob),name);
- if (!gv)
- DIE("Can't locate object method \"%s\" via package \"%s\"",
- name, HvNAME(SvSTASH(ob)));
- }
-
- SETs(gv);
- RETURN;
- }
-
-