/* pp_hot.c
*
* Copyright (c) 1991-1997, 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_gelem)
{
GV *gv;
SV *sv;
SV *ref;
char *elem;
dSP;
sv = POPs;
elem = SvPV(sv, na);
gv = (GV*)POPs;
ref = Nullsv;
sv = Nullsv;
switch (elem ? *elem : '\0')
{
case 'A':
if (strEQ(elem, "ARRAY"))
ref = (SV*)GvAV(gv);
break;
case 'C':
if (strEQ(elem, "CODE"))
ref = (SV*)GvCVu(gv);
break;
case 'F':
if (strEQ(elem, "FILEHANDLE")) /* XXX deprecate in 5.005 */
ref = (SV*)GvIOp(gv);
break;
case 'G':
if (strEQ(elem, "GLOB"))
ref = (SV*)gv;
break;
case 'H':
if (strEQ(elem, "HASH"))
ref = (SV*)GvHV(gv);
break;
case 'I':
if (strEQ(elem, "IO"))
ref = (SV*)GvIOp(gv);
break;
case 'N':
if (strEQ(elem, "NAME"))
sv = newSVpv(GvNAME(gv), GvNAMELEN(gv));
break;
case 'P':
if (strEQ(elem, "PACKAGE"))
sv = newSVpv(HvNAME(GvSTASH(gv)), 0);
break;
case 'S':
if (strEQ(elem, "SCALAR"))
ref = GvSV(gv);
break;
}
if (ref)
sv = newRV(ref);
if (sv)
sv_2mortal(sv);
else
sv = &sv_undef;
XPUSHs(sv);
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 && !SvTAINTED(left))
TAINT_NOT;
SvSetMagicSV(right, left);
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_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 (SvGMAGICAL(TARG))
mg_get(TARG);
else if (!SvOK(TARG) && SvTYPE(TARG) <= SVt_PVMG) {
sv_setpv(TARG, ""); /* Suppress warning. */
s = SvPV_force(TARG, len);
}
s = SvPV(right,len);
if (SvOK(TARG))
sv_catpvn(TARG,s,len);
else
sv_setpvn(TARG,s,len); /* suppress warning */
SETTARG;
RETURN;
}
}
PP(pp_padsv)
{
dSP; dTARGET;
XPUSHs(TARG);
if (op->op_flags & OPf_MOD) {
if (op->op_private & OPpLVAL_INTRO)
SAVECLEARSV(curpad[op->op_targ]);
else if (op->op_private & OPpDEREF)
vivify_ref(curpad[op->op_targ], op->op_private & OPpDEREF);
}
RETURN;
}
PP(pp_readline)
{
last_in_gv = (GV*)(*stack_sp--);
return do_readline();
}
PP(pp_eq)
{
dSP; tryAMAGICbinSET(eq,0);
{
dPOPnv;
SETs(boolSV(TOPn == value));
RETURN;
}
}
PP(pp_preinc)
{
dSP;
if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
croak(no_modify);
if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
SvIVX(TOPs) != IV_MAX)
{
++SvIVX(TOPs);
SvFLAGS(TOPs) &= ~(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_ul;
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;
#ifdef DEBUGGING
/*
* We ass_u_me that LvTARGOFF() comes first, and that two STRLENs
* will be enough to hold an OP*.
*/
SV* sv = sv_newmortal();
sv_upgrade(sv, SVt_PVLV);
LvTYPE(sv) = '/';
Copy(&op, &LvTARGOFF(sv), 1, OP*);
XPUSHs(sv);
#else
XPUSHs((SV*)op);
#endif
RETURN;
}
/* Oversized hot code. */
PP(pp_print)
{
dSP; dMARK; dORIGMARK;
GV *gv;
IO *io;
register PerlIO *fp;
MAGIC *mg;
if (op->op_flags & OPf_STACKED)
gv = (GV*)*++MARK;
else
gv = defoutgv;
if (SvMAGICAL(gv) && (mg = mg_find((SV*)gv, 'q'))) {
if (MARK == ORIGMARK) {
EXTEND(SP, 1);
++MARK;
Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
++SP;
}
PUSHMARK(MARK - 1);
*MARK = mg->mg_obj;
PUTBACK;
ENTER;
perl_call_method("PRINT", G_SCALAR);
LEAVE;
SPAGAIN;
MARK = ORIGMARK + 1;
*MARK = *SP;
SP = MARK;
RETURN;
}
if (!(io = GvIO(gv))) {
if (dowarn) {
SV* sv = sv_newmortal();
gv_fullname3(sv, gv, Nullch);
warn("Filehandle %s never opened", SvPV(sv,na));
}
SETERRNO(EBADF,RMS$_IFI);
goto just_say_no;
}
else if (!(fp = IoOFP(io))) {
if (dowarn) {
SV* sv = sv_newmortal();
gv_fullname3(sv, gv, Nullch);
if (IoIFP(io))
warn("Filehandle %s opened only for input", SvPV(sv,na));
else
warn("print on closed filehandle %s", SvPV(sv,na));
}
SETERRNO(EBADF,IoIFP(io)?RMS$_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 (PerlIO_write(fp, ofs, ofslen) == 0 || PerlIO_error(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 (PerlIO_write(fp, ors, orslen) == 0 || PerlIO_error(fp))
goto just_say_no;
if (IoFLAGS(io) & IOf_FLUSH)
if (PerlIO_flush(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 {
GV *gv;
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");
if (dowarn)
warn(warn_uninit);
if (GIMME == G_ARRAY)
RETURN;
RETPUSHUNDEF;
}
sym = SvPV(sv,na);
if (op->op_private & HINT_STRICT_REFS)
DIE(no_symref, sym, "an ARRAY");
gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
} else {
gv = (GV*)sv;
}
av = GvAVn(gv);
if (op->op_private & OPpLVAL_INTRO)
av = save_ary(gv);
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 {
GV *gv;
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");
if (dowarn)
warn(warn_uninit);
if (GIMME == G_ARRAY) {
SP--;
RETURN;
}
RETSETUNDEF;
}
sym = SvPV(sv,na);
if (op->op_private & HINT_STRICT_REFS)
DIE(no_symref, sym, "a HASH");
gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
} else {
gv = (GV*)sv;
}
hv = GvHVn(gv);
if (op->op_private & OPpLVAL_INTRO)
hv = save_hash(gv);
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))
sv_setpvf(TARG, "%ld/%ld",
(long)HvFILL(hv), (long)HvMAX(hv) + 1);
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;
I32 gimme;
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) {
TAINT_NOT; /* Each item is independent */
*relem = sv_mortalcopy(sv);
}
}
}
relem = firstrelem;
lelem = firstlelem;
ary = Null(AV*);
hash = Null(HV*);
while (lelem <= lastlelem) {
TAINT_NOT; /* Each item stands on its own, taintwise. */
sv = *lelem++;
switch (SvTYPE(sv)) {
case SVt_PVAV:
ary = (AV*)sv;
magic = SvMAGICAL(ary) != 0;
av_clear(ary);
av_extend(ary, lastrelem - relem);
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);
TAINT_NOT;
}
break;
case SVt_PVHV: {
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++;
tmpstr = NEWSV(29,0);
if (*relem)
sv_setsv(tmpstr,*relem); /* value */
*(relem++) = tmpstr;
(void)hv_store_ent(hash,sv,tmpstr,0);
if (magic)
mg_set(tmpstr);
TAINT_NOT;
}
if (relem == lastrelem)
warn("Odd number of elements in hash list");
}
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 |= (uid && (euid != uid || egid != gid));
}
delaymagic = 0;
gimme = GIMME_V;
if (gimme == G_VOID)
SP = firstrelem - 1;
else if (gimme == G_SCALAR) {
dTARGET;
SP = firstrelem;
SETi(lastrelem - firstrelem + 1);
}
else {
if (ary || hash)
SP = lastrelem;
else
SP = firstrelem + (lastlelem - firstlelem);
lelem = firstlelem + (relem - firstrelem);
while (relem <= SP)
*relem++ = (lelem <= lastlelem) ? *lelem++ : &sv_undef;
}
RETURN;
}
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;
I32 oldsave = savestack_ix;
I32 update_minmatch = 1;
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");
TAINT_NOT;
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);
update_minmatch = 0;
}
}
}
if (!rx->nparens && !global)
gimme = G_SCALAR; /* accidental array context? */
safebase = (((gimme == G_ARRAY) || global || !rx->nparens)
&& !sawampersand);
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 + rx->minlen) > strend)
goto nope;
if (update_minmatch++)
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
|| (pm->op_pmslen > 1
&& memNE(SvPVX(pm->op_pmshort), s, pm->op_pmslen)))
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:
TAINT_IF(rx->exec_tainted);
if (gimme == G_ARRAY) {
I32 iters, i, len;
iters = rx->nparens;
if (global && !iters)
i = 1;
else
i = 0;
EXTEND(SP, iters + i);
EXTEND_MORTAL(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;
strend = rx->subend;
if (rx->startp[0] && rx->startp[0] == rx->endp[0])
++rx->endp[0];
goto play_it_again;
}
LEAVE_SCOPE(oldsave);
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] - rx->subbeg;
if (rx->startp[0] == rx->endp[0])
mg->mg_flags |= MGf_MINMATCH;
else
mg->mg_flags &= ~MGf_MINMATCH;
}
}
LEAVE_SCOPE(oldsave);
RETPUSHYES;
}
yup:
TAINT_IF(rx->exec_tainted);
++BmUSEFUL(pm->op_pmshort);
curpm = pm;
if (pm->op_pmflags & PMf_ONCE)
pm->op_pmflags |= PMf_USED;
Safefree(rx->subbase);
rx->subbase = Nullch;
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;
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);
}
LEAVE_SCOPE(oldsave);
RETPUSHYES;
nope:
if (pm->op_pmshort)
++BmUSEFUL(pm->op_pmshort);
ret_no:
if (global && !(pm->op_pmflags & PMf_CONTINUE)) {
if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
MAGIC* mg = mg_find(TARG, 'g');
if (mg)
mg->mg_len = -1;
}
}
LEAVE_SCOPE(oldsave);
if (gimme == G_ARRAY)
RETURN;
RETPUSHNO;
}
OP *
do_readline()
{
dSP; dTARGETSTACKED;
register SV *sv;
STRLEN tmplen = 0;
STRLEN offset;
PerlIO *fp;
register IO *io = GvIO(last_in_gv);
register I32 type = op->op_type;
I32 gimme = GIMME_V;
MAGIC *mg;
if (SvMAGICAL(last_in_gv) && (mg = mg_find((SV*)last_in_gv, 'q'))) {
PUSHMARK(SP);
XPUSHs(mg->mg_obj);
PUTBACK;
ENTER;
perl_call_method("READLINE", gimme);
LEAVE;
SPAGAIN;
if (gimme == G_SCALAR)
SvSetMagicSV_nosteal(TARG, TOPs);
RETURN;
}
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:[]*.*;");
PerlIO *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$l_fnb
but that's unsupported, so I don't want to do it now and
have it bite someone in the future. */
strcat(tmpfnam,tmpnam(NULL));
cp = SvPV(tmpglob,i);
for (; i; i--) {
if (cp[i] == ';') hasver = 1;
if (cp[i] == '.') {
if (sts) hasver = 1;
else sts = 1;
}
if (cp[i] == '/') {
hasdir = isunix = 1;
break;
}
if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
hasdir = 1;
break;
}
}
if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) {
ok = ((wilddsc.dsc$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$find_file(&wilddsc,&rsdsc,&cxt,
&dfltdsc,NULL,NULL,NULL))&1)) {
end = rstr + (unsigned long int) *rslt;
if (!hasver) while (*end != ';') end--;
*(end++) = '\n'; *end = '\0';
for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
if (hasdir) {
if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
begin = rstr;
}
else {
begin = end;
while (*(--begin) != ']' && *begin != '>') ;
++begin;
}
ok = (PerlIO_puts(tmpfp,begin) != EOF);
}
if (cxt) (void)lib$find_file_end(&cxt);
if (ok && sts != RMS$_NMF &&
sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
if (!ok) {
if (!(sts & 1)) {
SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
}
PerlIO_close(tmpfp);
fp = NULL;
}
else {
PerlIO_rewind(tmpfp);
IoTYPE(io) = '<';
IoIFP(io) = fp = tmpfp;
IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
}
}
}
#else /* !VMS */
#ifdef DOSISH
#ifdef OS2
sv_setpv(tmpcmd, "for a in ");
sv_catsv(tmpcmd, tmpglob);
sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
#else
sv_setpv(tmpcmd, "perlglob ");
sv_catsv(tmpcmd, tmpglob);
sv_catpv(tmpcmd, " |");
#endif /* !OS2 */
#else /* !DOSISH */
#if defined(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 /* !DOSISH */
(void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
FALSE, 0, 0, Nullfp);
fp = IoIFP(io);
#endif /* !VMS */
LEAVE;
}
}
else if (type == OP_GLOB)
SP--;
}
if (!fp) {
if (dowarn && io && !(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_SCALAR) {
sv = TARG;
if (SvROK(sv))
sv_unref(sv);
(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;
}
else {
sv = sv_2mortal(NEWSV(57, 80));
offset = 0;
}
for (;;) {
if (!sv_gets(sv, fp, offset)) {
PerlIO_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) {
if (do_close(last_in_gv, FALSE) & ~0xFF)
warn("internal error: glob failed");
}
if (gimme == G_SCALAR) {
(void)SvOK_off(TARG);
PUSHTARG;
}
RETURN;
}
/* This should not be marked tainted if the fp is marked clean */
if (!(IoFLAGS(io) & IOf_UNTAINT)) {
TAINT;
SvTAINTED_on(sv);
}
IoLINES(io)++;
SvSETMAGIC(sv);
XPUSHs(sv);
if (type == OP_GLOB) {
char *tmps;
if (SvCUR(sv) > 0 && SvCUR(rs) > 0) {
tmps = SvEND(sv) - 1;
if (*tmps == *SvPVX(rs)) {
*tmps = '\0';
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 (gimme == G_SCALAR && !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 = OP_GIMME(op, -1);
if (gimme == -1) {
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;
HE* he;
SV *keysv = POPs;
HV *hv = (HV*)POPs;
U32 lval = op->op_flags & OPf_MOD;
U32 defer = op->op_private & OPpLVAL_DEFER;
if (SvTYPE(hv) != SVt_PVHV)
RETPUSHUNDEF;
he = hv_fetch_ent(hv, keysv, lval && !defer, 0);
if (lval) {
if (!he || HeVAL(he) == &sv_undef) {
SV* lv;
SV* key2;
if (!defer)
DIE(no_helem, SvPV(keysv, na));
lv = sv_newmortal();
sv_upgrade(lv, SVt_PVLV);
LvTYPE(lv) = 'y';
sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0);
SvREFCNT_dec(key2); /* sv_magic() increments refcount */
LvTARG(lv) = SvREFCNT_inc(hv);
LvTARGLEN(lv) = 1;
PUSHs(lv);
RETURN;
}
if (op->op_private & OPpLVAL_INTRO) {
if (HvNAME(hv) && isGV(HeVAL(he)))
save_gp((GV*)HeVAL(he), !(op->op_flags & OPf_SPECIAL));
else
save_svref(&HeVAL(he));
}
else if (op->op_private & OPpDEREF)
vivify_ref(HeVAL(he), op->op_private & OPpDEREF);
}
PUSHs(he ? HeVAL(he) : &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);
gimme = OP_GIMME(op, -1);
if (gimme == -1) {
if (cxstack_ix >= 0)
gimme = cxstack[cxstack_ix].blk_gimme;
else
gimme = G_SCALAR;
}
TAINT_NOT;
if (gimme == G_VOID)
SP = newsp;
else if (gimme == G_SCALAR) {
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 if (gimme == G_ARRAY) {
/* in case LEAVE wipes old return values */
for (mark = newsp + 1; mark <= SP; mark++) {
if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
*mark = sv_mortalcopy(*mark);
TAINT_NOT; /* Each item is independent */
}
}
}
curpm = newpm; /* Don't pop $1 et al till now */
LEAVE;
RETURN;
}
PP(pp_iter)
{
dSP;
register CONTEXT *cx;
SV* sv;
AV* av;
EXTEND(sp, 1);
cx = &cxstack[cxstack_ix];
if (cx->cx_type != CXt_LOOP)
DIE("panic: pp_iter");
av = cx->blk_loop.iterary;
if (cx->blk_loop.iterix >= (av == curstack ? cx->blk_oldsp : AvFILL(av)))
RETPUSHNO;
SvREFCNT_dec(*cx->blk_loop.itervar);
if (sv = AvARRAY(av)[++cx->blk_loop.iterix])
SvTEMP_off(sv);
else
sv = &sv_undef;
if (av != curstack && SvIMMORTAL(sv)) {
SV *lv = cx->blk_loop.iterlval;
if (lv && SvREFCNT(lv) > 1) {
SvREFCNT_dec(lv);
lv = Nullsv;
}
if (lv)
SvREFCNT_dec(LvTARG(lv));
else {
lv = cx->blk_loop.iterlval = NEWSV(26, 0);
sv_upgrade(lv, SVt_PVLV);
LvTYPE(lv) = 'y';
sv_magic(lv, Nullsv, 'y', Nullch, 0);
}
LvTARG(lv) = SvREFCNT_inc(av);
LvTARGOFF(lv) = cx->blk_loop.iterix;
LvTARGLEN(lv) = -1;
sv = (SV*)lv;
}
*cx->blk_loop.itervar = SvREFCNT_inc(sv);
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;
bool rxtainted;
char *orig;
I32 safebase;
register REGEXP *rx = pm->op_pmregexp;
STRLEN len;
int force_on_match = 0;
I32 oldsave = savestack_ix;
/* known replacement string? */
dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv;
if (op->op_flags & OPf_STACKED)
TARG = POPs;
else {
TARG = GvSV(defgv);
EXTEND(SP,1);
}
if (SvREADONLY(TARG)
|| (SvTYPE(TARG) > SVt_PVLV
&& !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))
croak(no_modify);
s = SvPV(TARG, len);
if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV)
force_on_match = 1;
TAINT_NOT;
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->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
|| (pm->op_pmslen > 1
&& memNE(SvPVX(pm->op_pmshort), s, pm->op_pmslen)))
goto nope;
}
if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
SvREFCNT_dec(pm->op_pmshort);
pm->op_pmshort = Nullsv; /* opt is being useless */
}
}
/* only replace once? */
once = !(rpm->op_pmflags & PMf_GLOBAL);
/* known replacement string? */
c = dstr ? SvPV(dstr, clen) : Nullch;
/* can do inplace substitution? */
if (c && clen <= rx->minlen && safebase) {
if (! pregexec(rx, s, strend, orig, 0,
SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
PUSHs(&sv_no);
LEAVE_SCOPE(oldsave);
RETURN;
}
if (force_on_match) {
force_on_match = 0;
s = SvPV_force(TARG, len);
goto force_it;
}
d = s;
curpm = pm;
SvSCREAM_off(TARG); /* disable possible screamer */
if (once) {
rxtainted = rx->exec_tainted;
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);
}
/*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);
}
else if (clen) {
d -= clen;
sv_chop(TARG, d);
Copy(c, d, clen, char);
}
else {
sv_chop(TARG, d);
}
TAINT_IF(rxtainted);
PUSHs(&sv_yes);
}
else {
rxtainted = 0;
do {
if (iters++ > maxiters)
DIE("Substitution loop");
rxtainted |= rx->exec_tainted;
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 NUL */
}
TAINT_IF(rxtainted);
PUSHs(sv_2mortal(newSViv((I32)iters)));
}
(void)SvPOK_only(TARG);
SvSETMAGIC(TARG);
SvTAINT(TARG);
LEAVE_SCOPE(oldsave);
RETURN;
}
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;
}
rxtainted = rx->exec_tainted;
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");
rxtainted |= rx->exec_tainted;
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);
TAINT_IF(rxtainted);
(void)SvOOK_off(TARG);
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);
SvTAINT(TARG);
PUSHs(sv_2mortal(newSViv((I32)iters)));
LEAVE_SCOPE(oldsave);
RETURN;
}
goto ret_no;
nope:
++BmUSEFUL(pm->op_pmshort);
ret_no:
PUSHs(&sv_no);
LEAVE_SCOPE(oldsave);
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;
I32 gimme = GIMME_V;
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_SCALAR) {
dTARGET;
XPUSHi(items);
}
else if (gimme == G_ARRAY)
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;
struct block_sub cxsub;
POPBLOCK(cx,newpm);
POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
TAINT_NOT;
if (gimme == G_SCALAR) {
MARK = newsp + 1;
if (MARK <= SP)
*MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs);
else {
MEXTEND(MARK, 0);
*MARK = &sv_undef;
}
SP = MARK;
}
else if (gimme == G_ARRAY) {
for (MARK = newsp + 1; MARK <= SP; MARK++) {
if (!SvTEMP(*MARK)) {
*MARK = sv_mortalcopy(*MARK);
TAINT_NOT; /* Each item is independent */
}
}
}
PUTBACK;
POPSUB2(); /* Stack values are safe: release CV and @_ ... */
curpm = newpm; /* ... and pop $1 et al */
LEAVE;
return pop_return();
}
PP(pp_entersub)
{
dSP; dPOPss;
GV *gv;
HV *stash;
register CV *cv;
register CONTEXT *cx;
I32 gimme;
bool hasargs = (op->op_flags & OPf_STACKED) != 0;
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 (SvGMAGICAL(sv)) {
mg_get(sv);
sym = SvPOKp(sv) ? SvPVX(sv) : Nullch;
}
else
sym = SvPV(sv, na);
if (!sym)
DIE(no_usym, "a subroutine");
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 = GvCVu((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)) {
GV* autogv;
SV* subname;
/* anonymous or undef'd function leaves us no recourse */
if (CvANON(cv) || !(gv = CvGV(cv)))
DIE("Undefined subroutine called");
/* autoloaded stub? */
if (cv != GvCV(gv)) {
cv = GvCV(gv);
goto retry;
}
/* should call AUTOLOAD now? */
if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv),
FALSE)))
{
cv = GvCV(autogv);
goto retry;
}
/* sorry */
subname = sv_newmortal();
gv_efullname3(subname, gv, Nullch);
DIE("Undefined subroutine &%s called", SvPVX(subname));
}
gimme = GIMME_V;
if ((op->op_private & OPpENTERSUB_DB) && GvCV(DBsub) && !CvNODEBUG(cv)) {
SV *oldsv = sv;
sv = GvSV(DBsub);
save_item(sv);
gv = CvGV(cv);
if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED))
|| strEQ(GvNAME(gv), "END")
|| ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */
!( (SvTYPE(oldsv) == SVt_PVGV) && (GvCV((GV*)oldsv) == cv)
&& (gv = (GV*)oldsv) ))) { /* Use GV from the stack as a fallback. */
/* GV is potentially non-unique, or contain different CV. */
sv_setsv(sv, newRV((SV*)cv));
}
else {
gv_efullname3(sv, gv, Nullch);
}
cv = GvCV(DBsub);
if (CvXSUB(cv)) curcopdb = curcop;
if (!cv)
DIE("No DBsub routine");
}
if (CvXSUB(cv)) {
if (CvOLDSTYLE(cv)) {
I32 (*fp3)_((int,int,int));
dMARK;
register I32 items = SP - MARK;
/* We dont worry to copy from @_. */
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;
if (!hasargs) {
/* Need to copy @_ to stack. Alternative may be to
* switch stack to @_, and copy return values
* back. This would allow popping @_ in XSUB, e.g.. XXXX */
AV* av = GvAV(defgv);
I32 items = AvFILL(av) + 1;
if (items) {
/* Mark is at the end of the stack. */
EXTEND(sp, items);
Copy(AvARRAY(av), sp + 1, items, SV*);
sp += items;
PUTBACK ;
}
}
if (curcopdb) { /* We assume that the first
XSUB in &DB::sub is the
called one. */
SAVESPTR(curcop);
curcop = curcopdb;
curcopdb = NULL;
}
/* Do we need to open block here? XXXX */
(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;
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
&& !(perldb && cv == GvCV(DBsub)))
sub_crush_depth(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? */
|| *name == '&') /* anonymous code? */
{
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) = (AV*)SvREFCNT_inc(av);
++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));
}
}
void
sub_crush_depth(cv)
CV* cv;
{
if (CvANON(cv))
warn("Deep recursion on anonymous subroutine");
else {
SV* tmpstr = sv_newmortal();
gv_efullname3(tmpstr, CvGV(cv), Nullch);
warn("Deep recursion on subroutine \"%s\"", SvPVX(tmpstr));
}
}
PP(pp_aelem)
{
dSP;
SV** svp;
I32 elem = POPi;
AV* av = (AV*)POPs;
U32 lval = op->op_flags & OPf_MOD;
U32 defer = (op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av));
if (elem > 0)
elem -= curcop->cop_arybase;
if (SvTYPE(av) != SVt_PVAV)
RETPUSHUNDEF;
svp = av_fetch(av, elem, lval && !defer);
if (lval) {
if (!svp || *svp == &sv_undef) {
SV* lv;
if (!defer)
DIE(no_aelem, elem);
lv = sv_newmortal();
sv_upgrade(lv, SVt_PVLV);
LvTYPE(lv) = 'y';
sv_magic(lv, Nullsv, 'y', Nullch, 0);
LvTARG(lv) = SvREFCNT_inc(av);
LvTARGOFF(lv) = elem;
LvTARGLEN(lv) = 1;
PUSHs(lv);
RETURN;
}
if (op->op_private & OPpLVAL_INTRO)
save_svref(svp);
else if (op->op_private & OPpDEREF)
vivify_ref(*svp, op->op_private & OPpDEREF);
}
PUSHs(svp ? *svp : &sv_undef);
RETURN;
}
void
vivify_ref(sv, to_what)
SV* sv;
U32 to_what;
{
if (SvGMAGICAL(sv))
mg_get(sv);
if (!SvOK(sv)) {
if (SvREADONLY(sv))
croak(no_modify);
if (SvTYPE(sv) < SVt_RV)
sv_upgrade(sv, SVt_RV);
else if (SvTYPE(sv) >= SVt_PV) {
(void)SvOOK_off(sv);
Safefree(SvPVX(sv));
SvLEN(sv) = SvCUR(sv) = 0;
}
switch (to_what) {
case OPpDEREF_SV:
SvRV(sv) = newSV(0);
break;
case OPpDEREF_AV:
SvRV(sv) = (SV*)newAV();
break;
case OPpDEREF_HV:
SvRV(sv) = (SV*)newHV();
break;
}
SvROK_on(sv);
SvSETMAGIC(sv);
}
}
PP(pp_method)
{
dSP;
SV* sv;
SV* ob;
GV* gv;
HV* stash;
char* name;
char* packname;
STRLEN packlen;
name = SvPV(TOPs, na);
sv = *(stack_base + TOPMARK + 1);
if (SvGMAGICAL(sv))
mg_get(sv);
if (SvROK(sv))
ob = (SV*)SvRV(sv);
else {
GV* iogv;
packname = Nullch;
if (!SvOK(sv) ||
!(packname = SvPV(sv, packlen)) ||
!(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
!(ob=(SV*)GvIO(iogv)))
{
if (!packname || !isIDFIRST(*packname))
DIE("Can't call method \"%s\" without a package or object reference", name);
stash = gv_stashpvn(packname, packlen, TRUE);
goto fetch;
}
*(stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv));
}
if (!ob || !SvOBJECT(ob))
DIE("Can't call method \"%s\" on unblessed reference", name);
stash = SvSTASH(ob);
fetch:
gv = gv_fetchmethod(stash, name);
if (!gv) {
char* leaf = name;
char* sep = Nullch;
char* p;
for (p = name; *p; p++) {
if (*p == '\'')
sep = p, leaf = p + 1;
else if (*p == ':' && *(p + 1) == ':')
sep = p, leaf = p + 2;
}
if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) {
packname = HvNAME(sep ? curcop->cop_stash : stash);
packlen = strlen(packname);
}
else {
packname = name;
packlen = sep - name;
}
DIE("Can't locate object method \"%s\" via package \"%.*s\"",
leaf, (int)packlen, packname);
}
SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv);
RETURN;
}