3 * Copyright (c) 1991-1994, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * 'Mercy!' cried Gandalf. 'If the giving of information is to be the cure
12 * of your inquisitiveness, I shall spend all the rest of my days answering
13 * you. What more do you want to know?'
14 * 'The names of all the stars, and of all living things, and the whole
15 * history of Middle-earth and Over-heaven and of the Sundering Seas,'
28 if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
29 croak("Bad symbol for array");
39 if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
40 croak("Bad symbol for hash");
50 if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
51 croak("Bad symbol for filehandle");
64 sprintf(tmpbuf,"::_<%s", name);
65 gv = gv_fetchpv(tmpbuf, TRUE, SVt_PVGV);
66 sv_setpv(GvSV(gv), name);
67 if (*name == '/' && (instr(name,"/lib/") || instr(name,".pm")))
70 hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L');
75 gv_init(gv, stash, name, len, multi)
84 sv_upgrade((SV*)gv, SVt_PVGV);
88 GvGP(gv) = gp_ref(gp);
90 GvSV(gv) = NEWSV(72,0);
91 GvLINE(gv) = curcop->cop_line;
92 GvFILEGV(gv) = curcop->cop_filegv;
94 sv_magic((SV*)gv, (SV*)gv, '*', name, len);
96 GvNAME(gv) = savepvn(name, len);
103 gv_init_sv(gv, sv_type)
121 gv_fetchmeth(stash, name, len, level)
137 croak("Recursive inheritance detected");
139 gvp = (GV**)hv_fetch(stash, name, len, TRUE);
141 DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) );
143 if (SvTYPE(topgv) != SVt_PVGV)
144 gv_init(topgv, stash, name, len, TRUE);
146 if (cv = GvCV(topgv)) {
147 if (CvXSUB(cv) || CvROOT(cv) || CvGV(cv)) { /* Not deleted, possibly autoloaded. */
148 if (GvCVGEN(topgv) >= sub_generation)
149 return topgv; /* valid cached inheritance */
150 if (!GvCVGEN(topgv)) { /* not an inheritance cache */
154 /* stale cached entry, just junk it */
156 GvCV(topgv) = cv = 0;
159 /* Now cv = 0, and there is no cv in topgv. */
161 gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
162 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
163 SV** svp = AvARRAY(av);
164 I32 items = AvFILL(av) + 1;
167 HV* basestash = gv_stashsv(sv, FALSE);
170 warn("Can't locate package %s for @%s::ISA",
171 SvPVX(sv), HvNAME(stash));
174 gv = gv_fetchmeth(basestash, name, len, level + 1);
176 GvCV(topgv) = GvCV(gv); /* cache the CV */
177 GvCVGEN(topgv) = sub_generation; /* valid for now */
178 SvREFCNT_inc(GvCV(gv));
185 if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) {
186 if (gv = gv_fetchmeth(lastchance, name, len, level + 1)) {
187 GvCV(topgv) = GvCV(gv); /* cache the CV */
188 GvCVGEN(topgv) = sub_generation; /* valid for now */
189 SvREFCNT_inc(GvCV(gv));
199 gv_fetchmethod(stash, name)
207 for (nend = name; *nend; nend++) {
208 if (*nend == ':' || *nend == '\'')
213 char *origname = name;
219 if (strEQ(origname,"SUPER")) {
220 /* Degenerate case ->SUPER::method should really lookup in original stash */
221 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0));
222 sv_catpvn(tmpstr, "::SUPER", 7);
223 stash = gv_stashpvn(SvPVX(tmpstr),SvCUR(tmpstr),TRUE);
225 DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) );
227 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
231 gv = gv_fetchmeth(stash, name, nend - name, 0);
234 /* Failed obvious case - look for SUPER as last element of stash's name */
235 char *packname = HvNAME(stash);
236 STRLEN len = strlen(packname);
237 if (len >= 7 && strEQ(packname+len-7,"::SUPER")) {
238 /* Now look for @.*::SUPER::ISA */
239 GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
241 if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) {
242 /* No @ISA in package ending in ::SUPER - drop suffix
243 and see if there is an @ISA there
246 char ch = packname[len];
248 packname[len] = '\0';
249 basestash = gv_stashpvn(packname, len, TRUE);
251 gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE);
252 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
253 /* Okay found @ISA after dropping the SUPER, alias it */
254 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
255 sv_catpvn(tmpstr, "::ISA", 5);
256 gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV);
258 GvAV(gv) = (AV*)SvREFCNT_inc(av);
259 /* ... and re-try lookup */
260 gv = gv_fetchmeth(stash, name, nend - name, 0);
262 croak("Cannot create %s::ISA",HvNAME(stash));
272 if (strEQ(name,"import"))
274 else if (strNE(name, "AUTOLOAD")) {
275 gv = gv_fetchmeth(stash, "AUTOLOAD", 8, 0);
276 if (gv && (cv = GvCV(gv))) { /* One more chance... */
277 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
278 sv_catpvn(tmpstr,"::", 2);
279 sv_catpvn(tmpstr, name, nend - name);
280 sv_setsv(GvSV(CvGV(cv)), tmpstr);
281 SvTAINTED_off(GvSV(CvGV(cv)));
289 gv_stashpv(name,create)
293 return gv_stashpvn(name, strlen(name), create);
297 gv_stashpvn(name,namelen,create)
306 if (namelen > 1200) {
309 warn("Weird package name \"%s\" truncated", name);
311 warn("Weird package name \"%.*s...\" truncated", namelen, name);
314 Copy(name,tmpbuf,namelen,char);
315 tmpbuf[namelen++] = ':';
316 tmpbuf[namelen++] = ':';
317 tmpbuf[namelen] = '\0';
318 tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV);
322 GvHV(tmpgv) = newHV();
325 HvNAME(stash) = savepv(name);
330 gv_stashsv(sv,create)
337 return gv_stashpvn(ptr, len, create);
342 gv_fetchpv(nambeg,add,sv_type)
347 register char *name = nambeg;
351 register char *namend;
356 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
359 for (namend = name; *namend; namend++) {
360 if ((*namend == '\'' && namend[1]) ||
361 (*namend == ':' && namend[1] == ':'))
365 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
370 New(601, tmpbuf, len+3, char);
371 Copy(name, tmpbuf, len, char);
375 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
377 if (!gvp || *gvp == (GV*)&sv_undef)
381 if (SvTYPE(gv) == SVt_PVGV)
386 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
388 if (!(stash = GvHV(gv)))
389 stash = GvHV(gv) = newHV();
392 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
400 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
407 /* No stash in name, so see how we can default */
410 if (isIDFIRST(*name)) {
411 if (isUPPER(*name)) {
413 if (*name == 'S' && (
414 strEQ(name, "SIG") ||
415 strEQ(name, "STDIN") ||
416 strEQ(name, "STDOUT") ||
417 strEQ(name, "STDERR") ))
420 else if (*name > 'E') {
421 if (*name == 'I' && strEQ(name, "INC"))
424 else if (*name > 'A') {
425 if (*name == 'E' && strEQ(name, "ENV"))
428 else if (*name == 'A' && (
429 strEQ(name, "ARGV") ||
430 strEQ(name, "ARGVOUT") ))
433 else if (*name == '_' && !name[1])
437 else if ((COP*)curcop == &compiling) {
439 if (add && (hints & HINT_STRICT_VARS) &&
440 sv_type != SVt_PVCV &&
441 sv_type != SVt_PVGV &&
442 sv_type != SVt_PVFM &&
443 sv_type != SVt_PVIO &&
444 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
446 gvp = (GV**)hv_fetch(stash,name,len,0);
448 *gvp == (GV*)&sv_undef ||
449 SvTYPE(*gvp) != SVt_PVGV)
453 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
454 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
455 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
457 warn("Variable \"%c%s\" is not imported",
458 sv_type == SVt_PVAV ? '@' :
459 sv_type == SVt_PVHV ? '%' : '$',
462 warn("(Did you mean &%s instead?)\n", name);
468 stash = curcop->cop_stash;
474 /* By this point we should have a stash and a name */
478 warn("Global symbol \"%s\" requires explicit package name", name);
480 stash = curstash ? curstash : defstash; /* avoid core dumps */
486 if (!SvREFCNT(stash)) /* symbol table under destruction */
489 gvp = (GV**)hv_fetch(stash,name,len,add);
490 if (!gvp || *gvp == (GV*)&sv_undef)
493 if (SvTYPE(gv) == SVt_PVGV) {
496 gv_init_sv(gv, sv_type);
501 /* Adding a new symbol */
504 warn("Had to create %s unexpectedly", nambeg);
505 gv_init(gv, stash, name, len, add & 2);
506 gv_init_sv(gv, sv_type);
508 /* set up magic where warranted */
511 if (strEQ(name, "ARGV")) {
512 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
522 if (strnEQ(name, "EXPORT", 6))
526 if (strEQ(name, "ISA")) {
529 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
530 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
533 av_push(av, newSVpv(pname = "NDBM_File",0));
534 gv_stashpvn(pname, 9, TRUE);
535 av_push(av, newSVpv(pname = "DB_File",0));
536 gv_stashpvn(pname, 7, TRUE);
537 av_push(av, newSVpv(pname = "GDBM_File",0));
538 gv_stashpvn(pname, 9, TRUE);
539 av_push(av, newSVpv(pname = "SDBM_File",0));
540 gv_stashpvn(pname, 9, TRUE);
541 av_push(av, newSVpv(pname = "ODBM_File",0));
542 gv_stashpvn(pname, 9, TRUE);
548 if (strEQ(name, "OVERLOAD")) {
551 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
554 #endif /* OVERLOAD */
556 if (strEQ(name, "SIG")) {
562 hv_magic(hv, siggv, 'S');
563 for(i=1;sig_name[i];i++) {
565 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
567 sv_setsv(*init,&sv_undef);
571 /* initialize signal stack */
572 signalstack = newAV();
573 AvREAL_off(signalstack);
574 av_extend(signalstack, 30);
575 av_fill(signalstack, 0);
603 sv_setpv(GvSV(gv),chopset);
608 if (dowarn && len == 1 && sv_type == SVt_PV)
609 warn("Use of $%s is deprecated", name);
653 SvREADONLY_on(GvSV(gv));
655 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
661 sv_setpv(GvSV(gv),"\f");
667 sv_setpv(GvSV(gv),"\034");
673 sv_upgrade(sv, SVt_PVNV);
674 sv_setpv(sv, patchlevel);
682 gv_fullname3(sv, gv, prefix)
687 HV *hv = GvSTASH(gv);
692 sv_setpv(sv, prefix ? prefix : "");
693 sv_catpv(sv,HvNAME(hv));
694 sv_catpvn(sv,"::", 2);
695 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
699 gv_efullname3(sv, gv, prefix)
707 gv_fullname3(sv, egv, prefix);
710 /* XXX compatibility with versions <= 5.003. */
716 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
719 /* XXX compatibility with versions <= 5.003. */
725 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
734 io = (IO*)NEWSV(0,0);
735 sv_upgrade((SV *)io,SVt_PVIO);
738 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
739 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
755 for (i = 0; i <= (I32) HvMAX(stash); i++) {
756 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
757 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
758 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
761 gv_check(hv); /* nested package */
763 else if (isALPHA(*HeKEY(entry))) {
764 gv = (GV*)HeVAL(entry);
767 curcop->cop_line = GvLINE(gv);
768 filegv = GvFILEGV(gv);
769 curcop->cop_filegv = filegv;
770 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
772 warn("Name \"%s::%s\" used only once: possible typo",
773 HvNAME(stash), GvNAME(gv));
783 (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
784 return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
787 /* hopefully this is only called on local symbol table entries */
805 if (!gv || !(gp = GvGP(gv)))
807 if (gp->gp_refcnt == 0) {
808 warn("Attempt to free unreferenced glob pointers");
811 if (--gp->gp_refcnt > 0) {
812 if (gp->gp_egv == gv)
817 SvREFCNT_dec(gp->gp_sv);
818 SvREFCNT_dec(gp->gp_av);
819 SvREFCNT_dec(gp->gp_hv);
820 SvREFCNT_dec(gp->gp_io);
821 if ((cv = gp->gp_cv) && !GvCVGEN(gv))
823 SvREFCNT_dec(gp->gp_form);
829 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
833 #ifdef MICROPORT /* Microport 2.4 hack */
838 return GvGP(gv)->gp_av;
840 return GvGP(gv_AVadd(gv))->gp_av;
847 return GvGP(gv)->gp_hv;
849 return GvGP(gv_HVadd(gv))->gp_hv;
851 #endif /* Microport 2.4 hack */
854 /* Updates and caches the CV's */
864 MAGIC* mg=mg_find((SV*)stash,'c');
865 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
867 if (mg && (amtp=((AMT*)(mg->mg_ptr)))->was_ok_am == amagic_generation &&
868 amtp->was_ok_sub == sub_generation)
869 return HV_AMAGIC(stash)? TRUE: FALSE;
870 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE);
871 if (amtp && amtp->table) {
873 for (i=1;i<NofAMmeth*2;i++) {
874 if (amtp->table[i]) {
875 SvREFCNT_dec(amtp->table[i]);
879 sv_unmagic((SV*)stash, 'c');
881 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
883 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
892 /* if (*(svp)==(SV*)amagic_generation && *(svp+1)==(SV*)sub_generation) {
893 DEBUG_o( deb("Overload magic in package %s up-to-date\n",HvNAME(stash))
895 return HV_AMAGIC(stash)? TRUE: FALSE;
898 amt.was_ok_am=amagic_generation;
899 amt.was_ok_sub=sub_generation;
900 amt.fallback=AMGfallNO;
902 /* Work with "fallback" key, which we assume to be first in AMG_names */
904 if ((cp=((char**)(*AMG_names))[0]) &&
905 (svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
906 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
907 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
910 for (i=1;i<NofAMmeth*2;i++) {
913 if ( (cp=((char**)(*AMG_names))[i]) ) {
914 svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE);
915 if (svp && ((sv = *svp) != &sv_undef)) {
916 switch (SvTYPE(sv)) {
919 if (!SvOK(sv)) break;
920 gv = gv_fetchmethod(stash, SvPV(sv, na));
921 if (gv) cv = GvCV(gv);
925 if (SvTYPE(cv) == SVt_PVCV)
930 die("Not a subroutine reference in overload table");
936 if (!(cv = GvCV((GV*)sv)))
937 cv = sv_2cv(sv, &stash, &gv, TRUE);
942 die("Method for operation %s not found in package %.256s during blessing\n",
948 amt.table[i]=(CV*)SvREFCNT_inc(cv);
950 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(amt));
952 /* HV_badAMAGIC_off(stash);*/
957 /*HV_badAMAGIC_off(stash);*/
958 HV_AMAGIC_off(stash);
962 /* During call to this subroutine stack can be reallocated. It is
963 * advised to call SPAGAIN macro in your code after call */
966 amagic_call(left,right,method,flags)
974 CV **cvp=NULL, **ocvp=NULL;
976 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
977 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
979 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
980 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
981 && (ocvp = cvp = ((oamtp=amtp=(AMT*)mg->mg_ptr)->table))
982 && ((cv = cvp[off=method+assignshift])
983 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
985 (fl = 1, cv = cvp[off=method])))) {
986 lr = -1; /* Call method for left argument */
988 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
991 /* look for substituted methods */
994 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
995 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
996 right = &sv_yes; lr = -1; assign = 1;
1000 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1001 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1002 right = &sv_yes; lr = -1; assign = 1;
1006 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1009 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1012 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1015 (void)((cv = cvp[off=bool__amg])
1016 || (cv = cvp[off=numer_amg])
1017 || (cv = cvp[off=string_amg]));
1023 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
1030 SV* newref = newSVsv(ref);
1031 SvOBJECT_on(newref);
1032 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1038 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1039 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1040 SV* nullsv=sv_2mortal(newSViv(0));
1042 SV* lessp = amagic_call(left,nullsv,
1043 lt_amg,AMGf_noright);
1044 logic = SvTRUE(lessp);
1046 SV* lessp = amagic_call(left,nullsv,
1047 ncmp_amg,AMGf_noright);
1048 logic = (SvNV(lessp) < 0);
1051 if (off==subtr_amg) {
1062 if (cv = cvp[off=subtr_amg]) {
1064 left = sv_2mortal(newSViv(0));
1071 if (!cv) goto not_found;
1072 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1073 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1074 && (cvp = ((amtp=(AMT*)mg->mg_ptr)->table))
1075 && (cv = cvp[off=method])) { /* Method for right
1078 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1079 && (cvp=ocvp) && (lr = -1))
1080 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1081 && !(flags & AMGf_unary)) {
1082 /* We look for substitution for
1083 * comparison operations and
1085 if (method==concat_amg || method==concat_ass_amg
1086 || method==repeat_amg || method==repeat_ass_amg) {
1087 return NULL; /* Delegate operation to string conversion */
1097 postpr = 1; off=ncmp_amg; break;
1104 postpr = 1; off=scmp_amg; break;
1106 if (off != -1) cv = cvp[off];
1111 not_found: /* No method found, either report or die */
1112 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1113 notfound = 1; lr = -1;
1114 } else if (cvp && (cv=cvp[nomethod_amg])) {
1115 notfound = 1; lr = 1;
1117 if (off==-1) off=method;
1118 sprintf(buf, "Operation `%s': no method found,\n\tleft argument %s%.256s,\n\tright argument %s%.256s",
1119 ((char**)AMG_names)[method + assignshift],
1121 "in overloaded package ":
1122 "has no overloaded magic",
1124 HvNAME(SvSTASH(SvRV(left))):
1127 "in overloaded package ":
1128 "has no overloaded magic",
1130 HvNAME(SvSTASH(SvRV(right))):
1132 if (amtp && amtp->fallback >= AMGfallYES) {
1133 DEBUG_o( deb(buf) );
1142 DEBUG_o( deb("Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n",
1143 ((char**)AMG_names)[off],
1144 method+assignshift==off? "" :
1146 method+assignshift==off? "" :
1147 ((char**)AMG_names)[method+assignshift],
1148 method+assignshift==off? "" : "')",
1149 flags & AMGf_unary? "" :
1150 lr==1 ? " for right argument": " for left argument",
1151 flags & AMGf_unary? " for argument" : "",
1153 fl? ",\n\tassignment variant used": "") );
1154 /* Since we use shallow copy during assignment, we need
1155 * to dublicate the contents, probably calling user-supplied
1156 * version of copy operator
1158 if ((method + assignshift==off
1159 && (assign || method==inc_amg || method==dec_amg))
1160 || inc_dec_ass) RvDEEPCP(left);
1167 Zero(&myop, 1, BINOP);
1168 myop.op_last = (OP *) &myop;
1169 myop.op_next = Nullop;
1170 myop.op_flags = OPf_KNOW|OPf_STACKED;
1175 if (perldb && curstash != debstash)
1176 op->op_private |= OPpENTERSUB_DB;
1180 EXTEND(sp, notfound + 5);
1181 PUSHs(lr>0? right: left);
1182 PUSHs(lr>0? left: right);
1183 PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no));
1185 PUSHs( sv_2mortal(newSVpv(((char**)AMG_names)[method + assignshift],0)) );
1190 if (op = pp_entersub())
1199 /* sv_2mortal(res); */
1208 ans=SvIV(res)<=0; break;
1211 ans=SvIV(res)<0; break;
1214 ans=SvIV(res)>=0; break;
1217 ans=SvIV(res)>0; break;
1220 ans=SvIV(res)==0; break;
1223 ans=SvIV(res)!=0; break;
1226 SvSetSV(left,res); return left;
1228 ans=!SvOK(res); break;
1230 return ans? &sv_yes: &sv_no;
1231 } else if (method==copy_amg) {
1233 die("Copy method did not return a reference");
1235 return SvREFCNT_inc(SvRV(res));
1241 #endif /* OVERLOAD */