3 * Copyright (c) 1991-1997, 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");
65 sprintf(tmpbuf, "_<%s", name);
66 tmplen = strlen(tmpbuf);
67 gv = *(GV**)hv_fetch(defstash, tmpbuf, tmplen, TRUE);
69 gv_init(gv, defstash, tmpbuf, tmplen, FALSE);
70 sv_setpv(GvSV(gv), name);
71 if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm")))
74 hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L');
79 gv_init(gv, stash, name, len, multi)
88 sv_upgrade((SV*)gv, SVt_PVGV);
92 GvGP(gv) = gp_ref(gp);
93 GvSV(gv) = NEWSV(72,0);
94 GvLINE(gv) = curcop->cop_line;
95 GvFILEGV(gv) = curcop->cop_filegv;
97 sv_magic((SV*)gv, (SV*)gv, '*', name, len);
99 GvNAME(gv) = savepvn(name, len);
106 gv_init_sv(gv, sv_type)
124 gv_fetchmeth(stash, name, len, level)
138 if ((level > 100) || (level < -100))
139 croak("Recursive inheritance detected");
141 DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) );
143 gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
148 if (SvTYPE(topgv) != SVt_PVGV)
149 gv_init(topgv, stash, name, len, TRUE);
150 if (cv = GvCV(topgv)) {
151 /* If genuine method or valid cache entry, use it */
152 if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation)
154 /* Stale cached entry: junk it */
156 GvCV(topgv) = cv = Nullcv;
161 gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE);
162 av = (gvp && (gv = *gvp) && gv != (GV*)&sv_undef) ? GvAV(gv) : Nullav;
164 /* create @.*::SUPER::ISA on demand */
166 char* packname = HvNAME(stash);
167 STRLEN packlen = strlen(packname);
169 if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) {
173 basestash = gv_stashpvn(packname, packlen, TRUE);
174 gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE);
175 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
176 gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE);
177 if (!gvp || !(gv = *gvp))
178 croak("Cannot create %s::ISA", HvNAME(stash));
179 if (SvTYPE(gv) != SVt_PVGV)
180 gv_init(gv, stash, "ISA", 3, TRUE);
181 SvREFCNT_dec(GvAV(gv));
182 GvAV(gv) = (AV*)SvREFCNT_inc(av);
188 SV** svp = AvARRAY(av);
189 I32 items = AvFILL(av) + 1;
192 HV* basestash = gv_stashsv(sv, FALSE);
195 warn("Can't locate package %s for @%s::ISA",
196 SvPVX(sv), HvNAME(stash));
199 gv = gv_fetchmeth(basestash, name, len,
200 (level >= 0) ? level + 1 : level - 1);
206 /* if at top level, try UNIVERSAL */
208 if (level == 0 || level == -1) {
211 if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) {
212 if (gv = gv_fetchmeth(lastchance, name, len,
213 (level >= 0) ? level + 1 : level - 1)) {
215 /* Use topgv for cache only if it has no synonyms */
216 if (topgv && GvREFCNT(topgv) == 1) {
217 if (cv = GvCV(topgv))
219 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
220 GvCVGEN(topgv) = sub_generation;
231 gv_fetchmethod(stash, name)
239 for (nend = name; *nend; nend++) {
242 else if (*nend == ':' && *(nend + 1) == ':')
246 char *origname = name;
250 if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
251 /* ->SUPER::method should really be looked up in original stash */
252 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash), 0));
253 sv_catpvn(tmpstr, "::SUPER", 7);
254 stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
255 DEBUG_o( deb("Treating %s as %s::%s\n",
256 origname, HvNAME(stash), name) );
259 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
262 gv = gv_fetchmeth(stash, name, nend - name, 0);
264 if (strEQ(name,"import"))
267 gv = gv_autoload4(stash, name, nend - name, TRUE);
274 gv_autoload4(stash, name, len, method)
280 static char autoload[] = "AUTOLOAD";
281 static STRLEN autolen = 8;
288 if (len == autolen && strnEQ(name, autoload, autolen))
291 if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
296 GV** gvp = (GV**)hv_fetch(stash, autoload, autolen, FALSE);
297 if (!gvp || !(gv = *gvp) || !(cv = GvCVu(gv)))
302 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
303 * The subroutine's original name may not be "AUTOLOAD", so we don't
304 * use that, but for lack of anything better we will use the sub's
305 * original package to look up $AUTOLOAD.
307 varstash = GvSTASH(CvGV(cv));
308 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
310 gv_init(vargv, varstash, autoload, autolen, FALSE);
312 sv_setpv(varsv, HvNAME(stash));
313 sv_catpvn(varsv, "::", 2);
314 sv_catpvn(varsv, name, len);
315 SvTAINTED_off(varsv);
320 gv_stashpv(name,create)
324 return gv_stashpvn(name, strlen(name), create);
328 gv_stashpvn(name,namelen,create)
337 if (namelen > 1200) {
340 warn("Weird package name \"%s\" truncated", name);
342 warn("Weird package name \"%.*s...\" truncated", (int)namelen, name);
345 Copy(name,tmpbuf,namelen,char);
346 tmpbuf[namelen++] = ':';
347 tmpbuf[namelen++] = ':';
348 tmpbuf[namelen] = '\0';
349 tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV);
353 GvHV(tmpgv) = newHV();
356 HvNAME(stash) = savepv(name);
361 gv_stashsv(sv,create)
368 return gv_stashpvn(ptr, len, create);
373 gv_fetchpv(nambeg,add,sv_type)
378 register char *name = nambeg;
382 register char *namend;
387 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
390 for (namend = name; *namend; namend++) {
391 if ((*namend == '\'' && namend[1]) ||
392 (*namend == ':' && namend[1] == ':'))
396 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
401 New(601, tmpbuf, len+3, char);
402 Copy(name, tmpbuf, len, char);
406 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
408 if (!gvp || *gvp == (GV*)&sv_undef)
412 if (SvTYPE(gv) == SVt_PVGV)
417 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
419 if (!(stash = GvHV(gv)))
420 stash = GvHV(gv) = newHV();
423 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
431 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
438 /* No stash in name, so see how we can default */
441 if (isIDFIRST(*name)) {
444 if (isUPPER(*name)) {
446 if (*name == 'S' && (
447 strEQ(name, "SIG") ||
448 strEQ(name, "STDIN") ||
449 strEQ(name, "STDOUT") ||
450 strEQ(name, "STDERR") ))
453 else if (*name > 'E') {
454 if (*name == 'I' && strEQ(name, "INC"))
457 else if (*name > 'A') {
458 if (*name == 'E' && strEQ(name, "ENV"))
461 else if (*name == 'A' && (
462 strEQ(name, "ARGV") ||
463 strEQ(name, "ARGVOUT") ))
466 else if (*name == '_' && !name[1])
471 else if ((COP*)curcop == &compiling) {
473 if (add && (hints & HINT_STRICT_VARS) &&
474 sv_type != SVt_PVCV &&
475 sv_type != SVt_PVGV &&
476 sv_type != SVt_PVFM &&
477 sv_type != SVt_PVIO &&
478 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
480 gvp = (GV**)hv_fetch(stash,name,len,0);
482 *gvp == (GV*)&sv_undef ||
483 SvTYPE(*gvp) != SVt_PVGV)
487 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
488 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
489 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
491 warn("Variable \"%c%s\" is not imported",
492 sv_type == SVt_PVAV ? '@' :
493 sv_type == SVt_PVHV ? '%' : '$',
496 warn("(Did you mean &%s instead?)\n", name);
502 stash = curcop->cop_stash;
508 /* By this point we should have a stash and a name */
512 warn("Global symbol \"%s\" requires explicit package name", name);
514 stash = curstash ? curstash : defstash; /* avoid core dumps */
515 add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV
516 : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV
517 : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV
524 if (!SvREFCNT(stash)) /* symbol table under destruction */
527 gvp = (GV**)hv_fetch(stash,name,len,add);
528 if (!gvp || *gvp == (GV*)&sv_undef)
531 if (SvTYPE(gv) == SVt_PVGV) {
534 gv_init_sv(gv, sv_type);
539 /* Adding a new symbol */
542 warn("Had to create %s unexpectedly", nambeg);
543 gv_init(gv, stash, name, len, add & 2);
544 gv_init_sv(gv, sv_type);
545 GvFLAGS(gv) |= add_gvflags;
547 /* set up magic where warranted */
550 if (strEQ(name, "ARGV")) {
551 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
561 if (strnEQ(name, "EXPORT", 6))
565 if (strEQ(name, "ISA")) {
568 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
569 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
572 av_push(av, newSVpv(pname = "NDBM_File",0));
573 gv_stashpvn(pname, 9, TRUE);
574 av_push(av, newSVpv(pname = "DB_File",0));
575 gv_stashpvn(pname, 7, TRUE);
576 av_push(av, newSVpv(pname = "GDBM_File",0));
577 gv_stashpvn(pname, 9, TRUE);
578 av_push(av, newSVpv(pname = "SDBM_File",0));
579 gv_stashpvn(pname, 9, TRUE);
580 av_push(av, newSVpv(pname = "ODBM_File",0));
581 gv_stashpvn(pname, 9, TRUE);
587 if (strEQ(name, "OVERLOAD")) {
590 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
593 #endif /* OVERLOAD */
595 if (strEQ(name, "SIG")) {
601 hv_magic(hv, siggv, 'S');
602 for(i=1;sig_name[i];i++) {
604 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
606 sv_setsv(*init,&sv_undef);
610 /* initialize signal stack */
611 signalstack = newAV();
612 AvREAL_off(signalstack);
613 av_extend(signalstack, 30);
614 av_fill(signalstack, 0);
642 sv_setpv(GvSV(gv),chopset);
648 #ifdef COMPLEX_STATUS
649 sv_upgrade(GvSV(gv), SVt_PVLV);
655 if (dowarn && len == 1 && sv_type == SVt_PV)
656 warn("Use of $%s is deprecated", name);
699 SvREADONLY_on(GvSV(gv));
701 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
707 sv_setpv(GvSV(gv),"\f");
713 sv_setpv(GvSV(gv),"\034");
718 sv_upgrade(sv, SVt_PVNV);
719 sv_setpv(sv, patchlevel);
729 gv_fullname3(sv, gv, prefix)
734 HV *hv = GvSTASH(gv);
739 sv_setpv(sv, prefix ? prefix : "");
740 sv_catpv(sv,HvNAME(hv));
741 sv_catpvn(sv,"::", 2);
742 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
746 gv_efullname3(sv, gv, prefix)
754 gv_fullname3(sv, egv, prefix);
757 /* XXX compatibility with versions <= 5.003. */
763 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
766 /* XXX compatibility with versions <= 5.003. */
772 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
781 io = (IO*)NEWSV(0,0);
782 sv_upgrade((SV *)io,SVt_PVIO);
785 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
786 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
802 for (i = 0; i <= (I32) HvMAX(stash); i++) {
803 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
804 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
805 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
808 gv_check(hv); /* nested package */
810 else if (isALPHA(*HeKEY(entry))) {
811 gv = (GV*)HeVAL(entry);
814 curcop->cop_line = GvLINE(gv);
815 filegv = GvFILEGV(gv);
816 curcop->cop_filegv = filegv;
817 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
819 warn("Name \"%s::%s\" used only once: possible typo",
820 HvNAME(stash), GvNAME(gv));
830 (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
831 return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
834 /* hopefully this is only called on local symbol table entries */
843 /* multi-named GPs cannot be used for method cache */
844 SvREFCNT_dec(gp->gp_cv);
849 /* Adding a new name to a subroutine invalidates method cache */
863 if (!gv || !(gp = GvGP(gv)))
865 if (gp->gp_refcnt == 0) {
866 warn("Attempt to free unreferenced glob pointers");
870 /* Deleting the name of a subroutine invalidates method cache */
873 if (--gp->gp_refcnt > 0) {
874 if (gp->gp_egv == gv)
879 SvREFCNT_dec(gp->gp_sv);
880 SvREFCNT_dec(gp->gp_av);
881 SvREFCNT_dec(gp->gp_hv);
882 SvREFCNT_dec(gp->gp_io);
883 SvREFCNT_dec(gp->gp_cv);
884 SvREFCNT_dec(gp->gp_form);
890 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
894 #ifdef MICROPORT /* Microport 2.4 hack */
899 return GvGP(gv)->gp_av;
901 return GvGP(gv_AVadd(gv))->gp_av;
908 return GvGP(gv)->gp_hv;
910 return GvGP(gv_HVadd(gv))->gp_hv;
912 #endif /* Microport 2.4 hack */
915 /* Updates and caches the CV's */
925 MAGIC* mg=mg_find((SV*)stash,'c');
926 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
929 if (mg && amtp->was_ok_am == amagic_generation
930 && amtp->was_ok_sub == sub_generation)
931 return AMT_AMAGIC(amtp);
932 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
934 for (i=1; i<NofAMmeth; i++) {
935 if (amtp->table[i]) {
936 SvREFCNT_dec(amtp->table[i]);
940 sv_unmagic((SV*)stash, 'c');
942 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
944 amt.was_ok_am = amagic_generation;
945 amt.was_ok_sub = sub_generation;
946 amt.fallback = AMGfallNO;
949 #ifdef OVERLOAD_VIA_HASH
950 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
951 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
958 /* Work with "fallback" key, which we assume to be first in AMG_names */
960 if (( cp = (char *)AMG_names[0] ) &&
961 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
962 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
963 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
965 for (i = 1; i < NofAMmeth; i++) {
967 cp = (char *)AMG_names[i];
969 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
970 if (svp && ((sv = *svp) != &sv_undef)) {
971 switch (SvTYPE(sv)) {
974 if (!SvOK(sv)) break;
975 gv = gv_fetchmethod(stash, SvPV(sv, na));
976 if (gv) cv = GvCV(gv);
980 if (SvTYPE(cv) == SVt_PVCV)
985 croak("Not a subroutine reference in overload table");
991 if (!(cv = GvCVu((GV*)sv)))
992 cv = sv_2cv(sv, &stash, &gv, TRUE);
997 croak("Method for operation %s not found in package %.256s during blessing\n",
1010 /* Work with "fallback" key, which we assume to be first in AMG_names */
1012 if ( cp = AMG_names[0] ) {
1013 /* Try to find via inheritance. */
1014 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1015 if (gv) sv = GvSV(gv);
1017 if (!gv) goto no_table;
1018 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1019 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1022 for (i = 1; i < NofAMmeth; i++) {
1026 *buf = '('; /* A cookie: "(". */
1027 strcpy(buf + 1, cp);
1028 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1029 cp, HvNAME(stash)) );
1030 gv = gv_fetchmeth(stash, buf, strlen(buf), -1); /* no filling stash! */
1031 if(gv && (cv = GvCV(gv))) {
1033 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1034 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1035 /* GvSV contains the name of the method. */
1038 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1039 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1041 && (ngv = gv_fetchmethod(stash, SvPVX(GvSV(gv))))) {
1042 name = SvPVX(GvSV(gv));
1043 cv = GvCV(gv = ngv);
1045 /* Can be an import stub (created by `can'). */
1047 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1048 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1051 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1052 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1055 /* If the sub is only a stub then we may have a gv to AUTOLOAD */
1056 gv = (GV*)*hv_fetch(GvSTASH(gv), name, strlen(name), TRUE);
1059 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1060 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1061 GvNAME(CvGV(cv))) );
1065 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1068 AMT_AMAGIC_on(&amt);
1069 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1073 /* Here we have no table: */
1075 AMT_AMAGIC_off(&amt);
1076 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1080 /* During call to this subroutine stack can be reallocated. It is
1081 * advised to call SPAGAIN macro in your code after call */
1084 amagic_call(left,right,method,flags)
1092 CV **cvp=NULL, **ocvp=NULL;
1094 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1095 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1097 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1098 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1099 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1100 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1102 && ((cv = cvp[off=method+assignshift])
1103 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1105 (fl = 1, cv = cvp[off=method])))) {
1106 lr = -1; /* Call method for left argument */
1108 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1111 /* look for substituted methods */
1114 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1115 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1116 right = &sv_yes; lr = -1; assign = 1;
1120 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1121 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1122 right = &sv_yes; lr = -1; assign = 1;
1126 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1129 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1132 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1135 (void)((cv = cvp[off=bool__amg])
1136 || (cv = cvp[off=numer_amg])
1137 || (cv = cvp[off=string_amg]));
1143 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
1150 SV* newref = newSVsv(ref);
1151 SvOBJECT_on(newref);
1152 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1158 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1159 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1160 SV* nullsv=sv_2mortal(newSViv(0));
1162 SV* lessp = amagic_call(left,nullsv,
1163 lt_amg,AMGf_noright);
1164 logic = SvTRUE(lessp);
1166 SV* lessp = amagic_call(left,nullsv,
1167 ncmp_amg,AMGf_noright);
1168 logic = (SvNV(lessp) < 0);
1171 if (off==subtr_amg) {
1182 if (cv = cvp[off=subtr_amg]) {
1184 left = sv_2mortal(newSViv(0));
1191 if (!cv) goto not_found;
1192 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1193 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1194 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1195 ? (amtp = (AMT*)mg->mg_ptr)->table
1197 && (cv = cvp[off=method])) { /* Method for right
1200 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1201 && (cvp=ocvp) && (lr = -1))
1202 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1203 && !(flags & AMGf_unary)) {
1204 /* We look for substitution for
1205 * comparison operations and
1207 if (method==concat_amg || method==concat_ass_amg
1208 || method==repeat_amg || method==repeat_ass_amg) {
1209 return NULL; /* Delegate operation to string conversion */
1219 postpr = 1; off=ncmp_amg; break;
1226 postpr = 1; off=scmp_amg; break;
1228 if (off != -1) cv = cvp[off];
1233 not_found: /* No method found, either report or croak */
1234 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1235 notfound = 1; lr = -1;
1236 } else if (cvp && (cv=cvp[nomethod_amg])) {
1237 notfound = 1; lr = 1;
1239 if (off==-1) off=method;
1241 "Operation `%s': no method found,%sargument %s%.256s%s%.256s",
1242 AMG_names[method + assignshift],
1243 (flags & AMGf_unary ? " " : "\n\tleft "),
1245 "in overloaded package ":
1246 "has no overloaded magic",
1248 HvNAME(SvSTASH(SvRV(left))):
1251 ",\n\tright argument in overloaded package ":
1254 : ",\n\tright argument has no overloaded magic"),
1256 HvNAME(SvSTASH(SvRV(right))):
1258 if (amtp && amtp->fallback >= AMGfallYES) {
1259 DEBUG_o( deb(buf) );
1269 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n",
1271 method+assignshift==off? "" :
1273 method+assignshift==off? "" :
1274 AMG_names[method+assignshift],
1275 method+assignshift==off? "" : "')",
1276 flags & AMGf_unary? "" :
1277 lr==1 ? " for right argument": " for left argument",
1278 flags & AMGf_unary? " for argument" : "",
1280 fl? ",\n\tassignment variant used": "") );
1281 /* Since we use shallow copy during assignment, we need
1282 * to dublicate the contents, probably calling user-supplied
1283 * version of copy operator
1285 if ((method + assignshift==off
1286 && (assign || method==inc_amg || method==dec_amg))
1287 || inc_dec_ass) RvDEEPCP(left);
1293 bool oldcatch = CATCH_GET;
1296 Zero(&myop, 1, BINOP);
1297 myop.op_last = (OP *) &myop;
1298 myop.op_next = Nullop;
1299 myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
1304 if (perldb && curstash != debstash)
1305 op->op_private |= OPpENTERSUB_DB;
1309 EXTEND(sp, notfound + 5);
1310 PUSHs(lr>0? right: left);
1311 PUSHs(lr>0? left: right);
1312 PUSHs( assign ? &sv_undef : boolSV(lr>0) );
1314 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1319 if (op = pp_entersub())
1326 CATCH_SET(oldcatch);
1333 ans=SvIV(res)<=0; break;
1336 ans=SvIV(res)<0; break;
1339 ans=SvIV(res)>=0; break;
1342 ans=SvIV(res)>0; break;
1345 ans=SvIV(res)==0; break;
1348 ans=SvIV(res)!=0; break;
1351 SvSetSV(left,res); return left;
1353 ans=!SvOK(res); break;
1356 } else if (method==copy_amg) {
1358 croak("Copy method did not return a reference");
1360 return SvREFCNT_inc(SvRV(res));
1366 #endif /* OVERLOAD */