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(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 (GvCVGEN(topgv) >= sub_generation)
148 return topgv; /* valid cached inheritance */
149 if (!GvCVGEN(topgv)) { /* not an inheritance cache */
153 /* stale cached entry, just junk it */
154 GvCV(topgv) = cv = 0;
158 /* if cv is still set, we have to free it if we find something to cache */
160 gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
161 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
162 SV** svp = AvARRAY(av);
163 I32 items = AvFILL(av) + 1;
166 HV* basestash = gv_stashsv(sv, FALSE);
169 warn("Can't locate package %s for @%s::ISA",
170 SvPVX(sv), HvNAME(stash));
173 gv = gv_fetchmeth(basestash, name, len, level + 1);
175 if (cv) { /* junk old undef */
176 assert(SvREFCNT(topgv) > 1);
180 GvCV(topgv) = GvCV(gv); /* cache the CV */
181 GvCVGEN(topgv) = sub_generation; /* valid for now */
188 if (lastchance = gv_stashpv("UNIVERSAL", FALSE)) {
189 if (gv = gv_fetchmeth(lastchance, name, len, level + 1)) {
190 if (cv) { /* junk old undef */
191 assert(SvREFCNT(topgv) > 1);
195 GvCV(topgv) = GvCV(gv); /* cache the CV */
196 GvCVGEN(topgv) = sub_generation; /* valid for now */
206 gv_fetchmethod(stash, name)
214 for (nend = name; *nend; nend++) {
215 if (*nend == ':' || *nend == '\'')
220 char *origname = name;
226 if (strEQ(origname,"SUPER")) {
227 /* Degenerate case ->SUPER::method should really lookup in original stash */
228 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0));
229 sv_catpvn(tmpstr, "::SUPER", 7);
230 stash = gv_stashpv(SvPV(tmpstr,na),TRUE);
232 DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) );
234 stash = gv_stashpv(origname,TRUE);
238 gv = gv_fetchmeth(stash, name, nend - name, 0);
241 /* Failed obvious case - look for SUPER as last element of stash's name */
242 char *packname = HvNAME(stash);
243 STRLEN len = strlen(packname);
244 if (len >= 7 && strEQ(packname+len-7,"::SUPER")) {
245 /* Now look for @.*::SUPER::ISA */
246 GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
247 if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) {
248 /* No @ISA in package ending in ::SUPER - drop suffix
249 and see if there is an @ISA there
252 char ch = packname[len-7];
254 packname[len-7] = '\0';
255 basestash = gv_stashpv(packname, TRUE);
256 packname[len-7] = ch;
257 gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE);
258 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
259 /* Okay found @ISA after dropping the SUPER, alias it */
260 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
261 sv_catpvn(tmpstr, "::ISA", 5);
262 gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV);
264 GvAV(gv) = (AV*)SvREFCNT_inc(av);
265 /* ... and re-try lookup */
266 gv = gv_fetchmeth(stash, name, nend - name, 0);
268 croak("Cannot create %s::ISA",HvNAME(stash));
278 if (strEQ(name,"import") || strEQ(name,"unimport"))
280 else if (strNE(name, "AUTOLOAD")) {
281 gv = gv_fetchmeth(stash, "AUTOLOAD", 8, 0);
282 if (gv && (cv = GvCV(gv))) { /* One more chance... */
283 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
284 sv_catpvn(tmpstr,"::", 2);
285 sv_catpvn(tmpstr, name, nend - name);
286 sv_setsv(GvSV(CvGV(cv)), tmpstr);
288 sv_unmagic(GvSV(CvGV(cv)), 't');
296 gv_stashpv(name,create)
303 /* Use strncpy to avoid bug in VMS sprintf */
304 /* sprintf(tmpbuf,"%.*s::",1200,name); */
305 strncpy(tmpbuf, name, 1200);
306 tmpbuf[1200] = '\0'; /* just in case . . . */
307 strcat(tmpbuf, "::");
308 tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV);
312 GvHV(tmpgv) = newHV();
315 HvNAME(stash) = savepv(name);
320 gv_stashsv(sv,create)
324 return gv_stashpv(SvPV(sv,na), create);
329 gv_fetchpv(nambeg,add,sv_type)
334 register char *name = nambeg;
338 register char *namend;
343 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
346 for (namend = name; *namend; namend++) {
347 if ((*namend == '\'' && namend[1]) ||
348 (*namend == ':' && namend[1] == ':'))
352 if (!SvREFCNT(stash)) /* symbol table under destruction */
357 New(601, tmpbuf, len+3, char);
358 Copy(name, tmpbuf, len, char);
362 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
364 if (!gvp || *gvp == (GV*)&sv_undef)
368 if (SvTYPE(gv) == SVt_PVGV)
373 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
375 if (!(stash = GvHV(gv)))
376 stash = GvHV(gv) = newHV();
379 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
387 return gv ? gv : *hv_fetch(defstash, "main::", 6, TRUE);
394 /* No stash in name, so see how we can default */
397 if (isIDFIRST(*name)) {
398 if (isUPPER(*name)) {
400 if (*name == 'S' && (
401 strEQ(name, "SIG") ||
402 strEQ(name, "STDIN") ||
403 strEQ(name, "STDOUT") ||
404 strEQ(name, "STDERR") ))
407 else if (*name > 'E') {
408 if (*name == 'I' && strEQ(name, "INC"))
411 else if (*name > 'A') {
412 if (*name == 'E' && strEQ(name, "ENV"))
415 else if (*name == 'A' && (
416 strEQ(name, "ARGV") ||
417 strEQ(name, "ARGVOUT") ))
420 else if (*name == '_' && !name[1])
424 else if ((COP*)curcop == &compiling) {
426 if (add && (hints & HINT_STRICT_VARS) &&
427 sv_type != SVt_PVCV &&
428 sv_type != SVt_PVGV &&
429 sv_type != SVt_PVFM &&
430 sv_type != SVt_PVIO &&
431 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
433 gvp = (GV**)hv_fetch(stash,name,len,0);
435 *gvp == (GV*)&sv_undef ||
436 SvTYPE(*gvp) != SVt_PVGV)
440 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
441 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
442 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
444 warn("Variable \"%c%s\" is not imported",
445 sv_type == SVt_PVAV ? '@' :
446 sv_type == SVt_PVHV ? '%' : '$',
449 warn("(Did you mean &%s instead?)\n", name);
455 stash = curcop->cop_stash;
461 /* By this point we should have a stash and a name */
465 warn("Global symbol \"%s\" requires explicit package name", name);
467 stash = curstash ? curstash : defstash; /* avoid core dumps */
473 if (!SvREFCNT(stash)) /* symbol table under destruction */
476 gvp = (GV**)hv_fetch(stash,name,len,add);
477 if (!gvp || *gvp == (GV*)&sv_undef)
480 if (SvTYPE(gv) == SVt_PVGV) {
483 gv_init_sv(gv, sv_type);
488 /* Adding a new symbol */
491 warn("Had to create %s unexpectedly", nambeg);
492 gv_init(gv, stash, name, len, add & 2);
493 gv_init_sv(gv, sv_type);
495 /* set up magic where warranted */
498 if (strEQ(name, "ARGV")) {
499 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
509 if (strnEQ(name, "EXPORT", 6))
513 if (strEQ(name, "ISA")) {
516 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
517 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
520 av_push(av, newSVpv(pname = "NDBM_File",0));
521 gv_stashpv(pname, TRUE);
522 av_push(av, newSVpv(pname = "DB_File",0));
523 gv_stashpv(pname, TRUE);
524 av_push(av, newSVpv(pname = "GDBM_File",0));
525 gv_stashpv(pname, TRUE);
526 av_push(av, newSVpv(pname = "SDBM_File",0));
527 gv_stashpv(pname, TRUE);
528 av_push(av, newSVpv(pname = "ODBM_File",0));
529 gv_stashpv(pname, TRUE);
535 if (strEQ(name, "OVERLOAD")) {
538 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
541 #endif /* OVERLOAD */
543 if (strEQ(name, "SIG")) {
548 hv_magic(hv, siggv, 'S');
550 /* initialize signal stack */
551 signalstack = newAV();
552 AvREAL_off(signalstack);
553 av_extend(signalstack, 30);
554 av_fill(signalstack, 0);
582 sv_setpv(GvSV(gv),chopset);
587 if (dowarn && len == 1 && sv_type == SVt_PV)
588 warn("Use of $%s is deprecated", name);
630 SvREADONLY_on(GvSV(gv));
632 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
638 sv_setpv(GvSV(gv),"\f");
644 sv_setpv(GvSV(gv),"\034");
650 sv_upgrade(sv, SVt_PVNV);
651 sv_setpv(sv, patchlevel);
663 HV *hv = GvSTASH(gv);
667 sv_setpv(sv, sv == (SV*)gv ? "*" : "");
668 sv_catpv(sv,HvNAME(hv));
669 sv_catpvn(sv,"::", 2);
670 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
687 sv_setpv(sv, sv == (SV*)gv ? "*" : "");
688 sv_catpv(sv,HvNAME(hv));
689 sv_catpvn(sv,"::", 2);
690 sv_catpvn(sv,GvNAME(egv),GvNAMELEN(egv));
699 io = (IO*)NEWSV(0,0);
700 sv_upgrade((SV *)io,SVt_PVIO);
703 iogv = gv_fetchpv("FileHandle::", TRUE, SVt_PVHV);
704 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
720 for (i = 0; i <= (I32) HvMAX(stash); i++) {
721 for (entry = HvARRAY(stash)[i]; entry; entry = entry->hent_next) {
722 if (entry->hent_key[entry->hent_klen-1] == ':' &&
723 (gv = (GV*)entry->hent_val) && (hv = GvHV(gv)) && HvNAME(hv))
726 gv_check(hv); /* nested package */
728 else if (isALPHA(*entry->hent_key)) {
729 gv = (GV*)entry->hent_val;
732 curcop->cop_line = GvLINE(gv);
733 filegv = GvFILEGV(gv);
734 curcop->cop_filegv = filegv;
735 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
737 warn("Identifier \"%s::%s\" used only once: possible typo",
738 HvNAME(stash), GvNAME(gv));
748 (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
749 return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
752 /* hopefully this is only called on local symbol table entries */
770 if (!gv || !(gp = GvGP(gv)))
772 if (gp->gp_refcnt == 0) {
773 warn("Attempt to free unreferenced glob pointers");
776 if (--gp->gp_refcnt > 0) {
777 if (gp->gp_egv == gv)
782 SvREFCNT_dec(gp->gp_sv);
783 SvREFCNT_dec(gp->gp_av);
784 SvREFCNT_dec(gp->gp_hv);
785 SvREFCNT_dec(gp->gp_io);
786 if ((cv = gp->gp_cv) && !GvCVGEN(gv))
788 SvREFCNT_dec(gp->gp_form);
794 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
798 #ifdef MICROPORT /* Microport 2.4 hack */
803 return GvGP(gv)->gp_av;
805 return GvGP(gv_AVadd(gv))->gp_av;
812 return GvGP(gv)->gp_hv;
814 return GvGP(gv_HVadd(gv))->gp_hv;
816 #endif /* Microport 2.4 hack */
819 /* Updates and caches the CV's */
829 MAGIC* mg=mg_find((SV*)stash,'c');
830 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
832 if (mg && (amtp=((AMT*)(mg->mg_ptr)))->was_ok_am == amagic_generation &&
833 amtp->was_ok_sub == sub_generation)
834 return HV_AMAGIC(stash)? TRUE: FALSE;
835 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE);
836 if (amtp && amtp->table) {
838 for (i=1;i<NofAMmeth*2;i++) {
839 if (amtp->table[i]) {
840 SvREFCNT_dec(amtp->table[i]);
844 sv_unmagic((SV*)stash, 'c');
846 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
848 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
856 /* if (*(svp)==(SV*)amagic_generation && *(svp+1)==(SV*)sub_generation) {
857 DEBUG_o( deb("Overload magic in package %s up-to-date\n",HvNAME(stash))
859 return HV_AMAGIC(stash)? TRUE: FALSE;
862 amt.was_ok_am=amagic_generation;
863 amt.was_ok_sub=sub_generation;
864 amt.fallback=AMGfallNO;
866 /* Work with "fallback" key, which we assume to be first in AMG_names */
868 if ((cp=((char**)(*AMG_names))[0]) &&
869 (svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
870 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
871 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
874 for (i=1;i<NofAMmeth*2;i++) {
877 if ( (cp=((char**)(*AMG_names))[i]) ) {
878 svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE);
879 if (svp && ((sv = *svp) != (GV*)&sv_undef)) {
880 switch (SvTYPE(sv)) {
883 if (!SvOK(sv)) break;
884 gv = gv_fetchmethod(stash, SvPV(sv, na));
885 if (gv) cv = GvCV(gv);
889 if (SvTYPE(cv) == SVt_PVCV)
894 die("Not a subroutine reference in %%OVERLOAD");
900 if (!(cv = GvCV((GV*)sv)))
901 cv = sv_2cv(sv, &stash, &gv, TRUE);
906 die("Method for operation %s not found in package %.256s during blessing\n",
912 amt.table[i]=(CV*)SvREFCNT_inc(cv);
914 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(amt));
916 /* HV_badAMAGIC_off(stash);*/
921 /*HV_badAMAGIC_off(stash);*/
922 HV_AMAGIC_off(stash);
926 /* During call to this subroutine stack can be reallocated. It is
927 * advised to call SPAGAIN macro in your code after call */
930 amagic_call(left,right,method,flags)
938 CV **cvp=NULL, **ocvp=NULL;
940 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
941 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
943 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
944 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
945 && (ocvp = cvp = ((oamtp=amtp=(AMT*)mg->mg_ptr)->table))
946 && ((cv = cvp[off=method+assignshift])
947 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
949 (fl = 1, cv = cvp[off=method])))) {
950 lr = -1; /* Call method for left argument */
952 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
955 /* look for substituted methods */
958 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
959 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
960 right = &sv_yes; lr = -1; assign = 1;
964 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
965 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
966 right = &sv_yes; lr = -1; assign = 1;
970 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
973 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
976 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
981 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
988 SV* newref = newSVsv(ref);
990 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
996 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
997 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
998 SV* nullsv=sv_2mortal(newSViv(0));
1000 SV* lessp = amagic_call(left,nullsv,
1001 lt_amg,AMGf_noright);
1002 logic = SvTRUE(lessp);
1004 SV* lessp = amagic_call(left,nullsv,
1005 ncmp_amg,AMGf_noright);
1006 logic = (SvNV(lessp) < 0);
1009 if (off==subtr_amg) {
1020 if (cv = cvp[off=subtr_amg]) {
1022 left = sv_2mortal(newSViv(0));
1029 if (!cv) goto not_found;
1030 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1031 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1032 && (cvp = ((amtp=(AMT*)mg->mg_ptr)->table))
1033 && (cv = cvp[off=method])) { /* Method for right
1036 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1037 && (cvp=ocvp) && (lr = -1))
1038 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1039 && !(flags & AMGf_unary)) {
1040 /* We look for substitution for
1041 * comparison operations and
1043 if (method==concat_amg || method==concat_ass_amg
1044 || method==repeat_amg || method==repeat_ass_amg) {
1045 return NULL; /* Delegate operation to string conversion */
1055 postpr = 1; off=ncmp_amg; break;
1062 postpr = 1; off=scmp_amg; break;
1064 if (off != -1) cv = cvp[off];
1069 not_found: /* No method found, either report or die */
1070 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1071 notfound = 1; lr = -1;
1072 } else if (cvp && (cv=cvp[nomethod_amg])) {
1073 notfound = 1; lr = 1;
1075 if (off==-1) off=method;
1076 sprintf(buf, "Operation `%s': no method found,\n\tleft argument %s%.256s,\n\tright argument %s%.256s",
1077 ((char**)AMG_names)[method + assignshift],
1079 "in overloaded package ":
1080 "has no overloaded magic",
1082 HvNAME(SvSTASH(SvRV(left))):
1085 "in overloaded package ":
1086 "has no overloaded magic",
1088 HvNAME(SvSTASH(SvRV(right))):
1090 if (amtp && amtp->fallback >= AMGfallYES) {
1091 DEBUG_o( deb(buf) );
1100 DEBUG_o( deb("Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n",
1101 ((char**)AMG_names)[off],
1102 method+assignshift==off? "" :
1104 method+assignshift==off? "" :
1105 ((char**)AMG_names)[method+assignshift],
1106 method+assignshift==off? "" : "')",
1107 flags & AMGf_unary? "" :
1108 lr==1 ? " for right argument": " for left argument",
1109 flags & AMGf_unary? " for argument" : "",
1111 fl? ",\n\tassignment variant used": "") );
1112 /* Since we use shallow copy during assignment, we need
1113 * to dublicate the contents, probably calling user-supplied
1114 * version of copy operator
1116 if ((method + assignshift==off
1117 && (assign || method==inc_amg || method==dec_amg))
1118 || inc_dec_ass) RvDEEPCP(left);
1125 Zero(&myop, 1, BINOP);
1126 myop.op_last = (OP *) &myop;
1127 myop.op_next = Nullop;
1128 myop.op_flags = OPf_KNOW|OPf_STACKED;
1136 EXTEND(sp, notfound + 5);
1137 PUSHs(lr>0? right: left);
1138 PUSHs(lr>0? left: right);
1139 PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no));
1141 PUSHs( sv_2mortal(newSVpv(((char**)AMG_names)[method + assignshift],0)) );
1146 if (op = pp_entersub())
1155 /* sv_2mortal(res); */
1164 ans=SvIV(res)<=0; break;
1167 ans=SvIV(res)<0; break;
1170 ans=SvIV(res)>=0; break;
1173 ans=SvIV(res)>0; break;
1176 ans=SvIV(res)==0; break;
1179 ans=SvIV(res)!=0; break;
1182 SvSetSV(left,res); return res; break;
1184 return ans? &sv_yes: &sv_no;
1185 } else if (method==copy_amg) {
1187 die("Copy method did not return a reference");
1189 return SvREFCNT_inc(SvRV(res));
1195 #endif /* OVERLOAD */