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-rw-r--r--gnu/usr.bin/perl/pp_hot.c1968
1 files changed, 1968 insertions, 0 deletions
diff --git a/gnu/usr.bin/perl/pp_hot.c b/gnu/usr.bin/perl/pp_hot.c
new file mode 100644
index 00000000000..8fe39f37f7b
--- /dev/null
+++ b/gnu/usr.bin/perl/pp_hot.c
@@ -0,0 +1,1968 @@
+/* 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_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*)GvCV(gv);
+ break;
+ case 'F':
+ if (strEQ(elem, "FILEHANDLE"))
+ 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 '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 && (!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 (SvGMAGICAL(TARG))
+ mg_get(TARG);
+ else if (!SvOK(TARG)) {
+ s = SvPV_force(TARG, len);
+ 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_flags & OPf_MOD) {
+ if (op->op_private & OPpLVAL_INTRO)
+ SAVECLEARSV(curpad[op->op_targ]);
+ else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
+ provide_ref(op, 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");
+ if (GIMME == G_ARRAY)
+ RETURN;
+ 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");
+ if (GIMME == G_ARRAY) {
+ SP--;
+ RETURN;
+ }
+ 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) {
+ tainted = 0; /* 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);
+ 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);
+ tainted = 0;
+ }
+ 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);
+ tainted = 0;
+ }
+ }
+ 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;
+ if (GIMME == G_ARRAY) {
+ if (ary || hash)
+ SP = lastrelem;
+ else
+ SP = firstrelem + (lastlelem - firstlelem);
+ RETURN;
+ }
+ else {
+ dTARGET;
+ SP = firstrelem;
+
+ SETi(lastrelem - firstrelem + 1);
+ 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;
+
+ 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;
+ }
+ 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] - truebase;
+ if (rx->startp[0] == rx->endp[0])
+ mg->mg_flags |= MGf_MINMATCH;
+ else
+ mg->mg_flags &= ~MGf_MINMATCH;
+ }
+ else
+ mg->mg_len = -1;
+ }
+ LEAVE_SCOPE(oldsave);
+ 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);
+ }
+ LEAVE_SCOPE(oldsave);
+ 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;
+ }
+ }
+ LEAVE_SCOPE(oldsave);
+ 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$find_file(&wilddsc,&rsdsc,&cxt,
+ &dfltdsc,NULL,NULL,NULL))&1)) {
+ end = rstr + (unsigned long int) *rslt;
+ if (!hasver) while (*end != ';') end--;
+ *(end++) = '\n'; *end = '\0';
+ for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
+ if (hasdir) {
+ if (isunix) trim_unixpath(rstr,SvPVX(tmpglob));
+ begin = rstr;
+ }
+ else {
+ begin = end;
+ while (*(--begin) != ']' && *begin != '>') ;
+ ++begin;
+ }
+ ok = (fputs(begin,tmpfp) != EOF);
+ }
+ if (cxt) (void)lib$find_file_end(&cxt);
+ if (ok && sts != RMS$_NMF &&
+ sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
+ if (!ok) {
+ if (!(sts & 1)) {
+ SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
+ }
+ fclose(tmpfp);
+ 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),
+ 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_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(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 (!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))
+ provide_ref(op, *svp);
+ }
+ 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;
+ 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 (av == stack && cx->blk_loop.iterix >= cx->blk_oldsp)
+ RETPUSHNO;
+
+ if (cx->blk_loop.iterix >= AvFILL(av))
+ RETPUSHNO;
+
+ if (sv = AvARRAY(av)[++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;
+ I32 oldsave = savestack_ix;
+
+ 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) || (SvTYPE(TARG) == SVt_PVGV))
+ 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);
+ LEAVE_SCOPE(oldsave);
+ 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);
+ LEAVE_SCOPE(oldsave);
+ RETURN;
+ }
+ else if (clen) {
+ d -= clen;
+ sv_chop(TARG, d);
+ Copy(c, d, clen, char);
+ (void)SvPOK_only(TARG);
+ SvSETMAGIC(TARG);
+ PUSHs(&sv_yes);
+ LEAVE_SCOPE(oldsave);
+ RETURN;
+ }
+ else {
+ sv_chop(TARG, d);
+ (void)SvPOK_only(TARG);
+ SvSETMAGIC(TARG);
+ PUSHs(&sv_yes);
+ LEAVE_SCOPE(oldsave);
+ 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)));
+ LEAVE_SCOPE(oldsave);
+ RETURN;
+ }
+ PUSHs(&sv_no);
+ LEAVE_SCOPE(oldsave);
+ 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);
+
+ (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);
+ PUSHs(sv_2mortal(newSViv((I32)iters)));
+ LEAVE_SCOPE(oldsave);
+ RETURN;
+ }
+ PUSHs(&sv_no);
+ LEAVE_SCOPE(oldsave);
+ RETURN;
+
+nope:
+ ++BmUSEFUL(pm->op_pmshort);
+ 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;
+
+ 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;
+ GV *ngv;
+ if (SvFAKE(cv) && GvCV(gv) != cv) { /* autoloaded stub? */
+ cv = GvCV(gv);
+ if (SvTYPE(sv) == SVt_PVGV) {
+ SvREFCNT_dec(GvCV((GV*)sv));
+ GvCV((GV*)sv) = (CV*)SvREFCNT_inc((SV*)cv);
+ }
+ goto retry;
+ }
+ tmpstr = sv_newmortal();
+ 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 */
+ if (tainting)
+ sv_unmagic(GvSV(CvGV(cv)), 't');
+ goto retry;
+ }
+ else
+ DIE("Undefined subroutine &%s called",SvPVX(tmpstr));
+ }
+ DIE("Undefined subroutine called");
+ }
+
+ gimme = GIMME;
+ if ((op->op_private & OPpENTERSUB_DB) && !CvXSUB(cv)) {
+ sv = GvSV(DBsub);
+ save_item(sv);
+ if (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) {
+ /* GV is 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");
+ }
+
+ 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))
+ provide_ref(op, *svp);
+ }
+ PUSHs(svp ? *svp : &sv_undef);
+ RETURN;
+}
+
+void
+provide_ref(op, sv)
+OP* op;
+SV* sv;
+{
+ if (SvGMAGICAL(sv))
+ mg_get(sv);
+ if (!SvOK(sv)) {
+ if (SvREADONLY(sv))
+ croak(no_modify);
+ (void)SvUPGRADE(sv, SVt_RV);
+ SvRV(sv) = (op->op_private & OPpDEREF_HV ?
+ (SV*)newHV() : (SV*)newAV());
+ SvROK_on(sv);
+ SvSETMAGIC(sv);
+ }
+}
+
+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) = sv_2mortal(newRV(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;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-29 14:07:34 +0000