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");
67 tmplen = strlen(name) + 2;
68 if (tmplen < sizeof smallbuf)
71 New(603, tmpbuf, tmplen + 1, char);
74 strcpy(tmpbuf + 2, name);
75 gv = *(GV**)hv_fetch(defstash, tmpbuf, tmplen, TRUE);
77 gv_init(gv, defstash, tmpbuf, tmplen, FALSE);
78 if (tmpbuf != smallbuf)
80 sv_setpv(GvSV(gv), name);
81 if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm")))
84 hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L');
89 gv_init(gv, stash, name, len, multi)
98 sv_upgrade((SV*)gv, SVt_PVGV);
101 Newz(602, gp, 1, GP);
102 GvGP(gv) = gp_ref(gp);
103 GvSV(gv) = NEWSV(72,0);
104 GvLINE(gv) = curcop->cop_line;
105 GvFILEGV(gv) = curcop->cop_filegv;
107 sv_magic((SV*)gv, (SV*)gv, '*', name, len);
109 GvNAME(gv) = savepvn(name, len);
116 gv_init_sv(gv, sv_type)
134 gv_fetchmeth(stash, name, len, level)
148 if ((level > 100) || (level < -100))
149 croak("Recursive inheritance detected");
151 DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) );
153 gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
158 if (SvTYPE(topgv) != SVt_PVGV)
159 gv_init(topgv, stash, name, len, TRUE);
160 if (cv = GvCV(topgv)) {
161 /* If genuine method or valid cache entry, use it */
162 if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation)
164 /* Stale cached entry: junk it */
166 GvCV(topgv) = cv = Nullcv;
171 gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE);
172 av = (gvp && (gv = *gvp) && gv != (GV*)&sv_undef) ? GvAV(gv) : Nullav;
174 /* create @.*::SUPER::ISA on demand */
176 char* packname = HvNAME(stash);
177 STRLEN packlen = strlen(packname);
179 if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) {
183 basestash = gv_stashpvn(packname, packlen, TRUE);
184 gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE);
185 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
186 dTHR; /* just for SvREFCNT_dec */
187 gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE);
188 if (!gvp || !(gv = *gvp))
189 croak("Cannot create %s::ISA", HvNAME(stash));
190 if (SvTYPE(gv) != SVt_PVGV)
191 gv_init(gv, stash, "ISA", 3, TRUE);
192 SvREFCNT_dec(GvAV(gv));
193 GvAV(gv) = (AV*)SvREFCNT_inc(av);
199 SV** svp = AvARRAY(av);
200 I32 items = AvFILL(av) + 1;
203 HV* basestash = gv_stashsv(sv, FALSE);
206 warn("Can't locate package %s for @%s::ISA",
207 SvPVX(sv), HvNAME(stash));
210 gv = gv_fetchmeth(basestash, name, len,
211 (level >= 0) ? level + 1 : level - 1);
217 /* if at top level, try UNIVERSAL */
219 if (level == 0 || level == -1) {
222 if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) {
223 if (gv = gv_fetchmeth(lastchance, name, len,
224 (level >= 0) ? level + 1 : level - 1)) {
227 * Cache method in topgv if:
228 * 1. topgv has no synonyms (else inheritance crosses wires)
229 * 2. method isn't a stub (else AUTOLOAD fails spectacularly)
232 GvREFCNT(topgv) == 1 &&
234 (CvROOT(cv) || CvXSUB(cv)))
236 dTHR; /* just for SvREFCNT_inc */
237 if (cv = GvCV(topgv))
239 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
240 GvCVGEN(topgv) = sub_generation;
251 gv_fetchmethod(stash, name)
255 return gv_fetchmethod_autoload(stash, name, TRUE);
259 gv_fetchmethod_autoload(stash, name, autoload)
268 for (nend = name; *nend; nend++) {
271 else if (*nend == ':' && *(nend + 1) == ':')
275 char *origname = name;
279 if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
280 /* ->SUPER::method should really be looked up in original stash */
281 SV *tmpstr = sv_2mortal(newSVpvf("%s::SUPER",
282 HvNAME(curcop->cop_stash)));
283 stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
284 DEBUG_o( deb("Treating %s as %s::%s\n",
285 origname, HvNAME(stash), name) );
288 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
291 gv = gv_fetchmeth(stash, name, nend - name, 0);
293 if (strEQ(name,"import"))
296 gv = gv_autoload4(stash, name, nend - name, TRUE);
300 if (!CvROOT(cv) && !CvXSUB(cv)) {
308 if (GvCV(stubgv) != cv) /* orphaned import */
311 autogv = gv_autoload4(GvSTASH(stubgv),
312 GvNAME(stubgv), GvNAMELEN(stubgv), TRUE);
322 gv_autoload4(stash, name, len, method)
328 static char autoload[] = "AUTOLOAD";
329 static STRLEN autolen = 8;
336 if (len == autolen && strnEQ(name, autoload, autolen))
338 if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
343 * Inheriting AUTOLOAD for non-methods works ... for now.
345 if (dowarn && !method && (GvCVGEN(gv) || GvSTASH(gv) != stash))
347 "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
348 HvNAME(stash), (int)len, name);
351 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
352 * The subroutine's original name may not be "AUTOLOAD", so we don't
353 * use that, but for lack of anything better we will use the sub's
354 * original package to look up $AUTOLOAD.
356 varstash = GvSTASH(CvGV(cv));
357 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
359 gv_init(vargv, varstash, autoload, autolen, FALSE);
361 sv_setpv(varsv, HvNAME(stash));
362 sv_catpvn(varsv, "::", 2);
363 sv_catpvn(varsv, name, len);
364 SvTAINTED_off(varsv);
369 gv_stashpv(name,create)
373 return gv_stashpvn(name, strlen(name), create);
377 gv_stashpvn(name,namelen,create)
387 if (namelen + 3 < sizeof smallbuf)
390 New(606, tmpbuf, namelen + 3, char);
391 Copy(name,tmpbuf,namelen,char);
392 tmpbuf[namelen++] = ':';
393 tmpbuf[namelen++] = ':';
394 tmpbuf[namelen] = '\0';
395 tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV);
396 if (tmpbuf != smallbuf)
401 GvHV(tmpgv) = newHV();
404 HvNAME(stash) = savepv(name);
409 gv_stashsv(sv,create)
416 return gv_stashpvn(ptr, len, create);
421 gv_fetchpv(nambeg,add,sv_type)
427 register char *name = nambeg;
431 register char *namend;
436 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
439 for (namend = name; *namend; namend++) {
440 if ((*namend == '\'' && namend[1]) ||
441 (*namend == ':' && namend[1] == ':'))
445 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
450 New(601, tmpbuf, len+3, char);
451 Copy(name, tmpbuf, len, char);
455 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
457 if (!gvp || *gvp == (GV*)&sv_undef)
461 if (SvTYPE(gv) == SVt_PVGV)
466 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
468 if (!(stash = GvHV(gv)))
469 stash = GvHV(gv) = newHV();
472 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
480 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
487 /* No stash in name, so see how we can default */
490 if (isIDFIRST(*name)) {
493 if (isUPPER(*name)) {
495 if (*name == 'S' && (
496 strEQ(name, "SIG") ||
497 strEQ(name, "STDIN") ||
498 strEQ(name, "STDOUT") ||
499 strEQ(name, "STDERR") ))
502 else if (*name > 'E') {
503 if (*name == 'I' && strEQ(name, "INC"))
506 else if (*name > 'A') {
507 if (*name == 'E' && strEQ(name, "ENV"))
510 else if (*name == 'A' && (
511 strEQ(name, "ARGV") ||
512 strEQ(name, "ARGVOUT") ))
515 else if (*name == '_' && !name[1])
520 else if ((COP*)curcop == &compiling) {
522 if (add && (hints & HINT_STRICT_VARS) &&
523 sv_type != SVt_PVCV &&
524 sv_type != SVt_PVGV &&
525 sv_type != SVt_PVFM &&
526 sv_type != SVt_PVIO &&
527 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
529 gvp = (GV**)hv_fetch(stash,name,len,0);
531 *gvp == (GV*)&sv_undef ||
532 SvTYPE(*gvp) != SVt_PVGV)
536 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
537 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
538 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
540 warn("Variable \"%c%s\" is not imported",
541 sv_type == SVt_PVAV ? '@' :
542 sv_type == SVt_PVHV ? '%' : '$',
545 warn("(Did you mean &%s instead?)\n", name);
551 stash = curcop->cop_stash;
557 /* By this point we should have a stash and a name */
561 warn("Global symbol \"%s\" requires explicit package name", name);
563 stash = curstash ? curstash : defstash; /* avoid core dumps */
564 add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV
565 : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV
566 : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV
573 if (!SvREFCNT(stash)) /* symbol table under destruction */
576 gvp = (GV**)hv_fetch(stash,name,len,add);
577 if (!gvp || *gvp == (GV*)&sv_undef)
580 if (SvTYPE(gv) == SVt_PVGV) {
583 gv_init_sv(gv, sv_type);
588 /* Adding a new symbol */
591 warn("Had to create %s unexpectedly", nambeg);
592 gv_init(gv, stash, name, len, add & 2);
593 gv_init_sv(gv, sv_type);
594 GvFLAGS(gv) |= add_gvflags;
596 /* set up magic where warranted */
599 if (strEQ(name, "ARGV")) {
600 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
610 if (strnEQ(name, "EXPORT", 6))
614 if (strEQ(name, "ISA")) {
617 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
618 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
621 av_push(av, newSVpv(pname = "NDBM_File",0));
622 gv_stashpvn(pname, 9, TRUE);
623 av_push(av, newSVpv(pname = "DB_File",0));
624 gv_stashpvn(pname, 7, TRUE);
625 av_push(av, newSVpv(pname = "GDBM_File",0));
626 gv_stashpvn(pname, 9, TRUE);
627 av_push(av, newSVpv(pname = "SDBM_File",0));
628 gv_stashpvn(pname, 9, TRUE);
629 av_push(av, newSVpv(pname = "ODBM_File",0));
630 gv_stashpvn(pname, 9, TRUE);
636 if (strEQ(name, "OVERLOAD")) {
639 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
642 #endif /* OVERLOAD */
644 if (strEQ(name, "SIG")) {
650 hv_magic(hv, siggv, 'S');
651 for(i=1;sig_name[i];i++) {
653 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
655 sv_setsv(*init,&sv_undef);
659 /* initialize signal stack */
660 signalstack = newAV();
661 AvREAL_off(signalstack);
662 av_extend(signalstack, 30);
663 av_fill(signalstack, 0);
691 sv_setpv(GvSV(gv),chopset);
697 #ifdef COMPLEX_STATUS
698 sv_upgrade(GvSV(gv), SVt_PVLV);
704 if (dowarn && len == 1 && sv_type == SVt_PV)
705 warn("Use of $%s is deprecated", name);
748 SvREADONLY_on(GvSV(gv));
750 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
756 sv_setpv(GvSV(gv),"\f");
762 sv_setpv(GvSV(gv),"\034");
767 sv_upgrade(sv, SVt_PVNV);
768 sv_setpv(sv, patchlevel);
778 gv_fullname3(sv, gv, prefix)
783 HV *hv = GvSTASH(gv);
788 sv_setpv(sv, prefix ? prefix : "");
789 sv_catpv(sv,HvNAME(hv));
790 sv_catpvn(sv,"::", 2);
791 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
795 gv_efullname3(sv, gv, prefix)
803 gv_fullname3(sv, egv, prefix);
806 /* XXX compatibility with versions <= 5.003. */
812 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
815 /* XXX compatibility with versions <= 5.003. */
821 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
831 io = (IO*)NEWSV(0,0);
832 sv_upgrade((SV *)io,SVt_PVIO);
835 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
836 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
853 for (i = 0; i <= (I32) HvMAX(stash); i++) {
854 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
855 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
856 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
859 gv_check(hv); /* nested package */
861 else if (isALPHA(*HeKEY(entry))) {
862 gv = (GV*)HeVAL(entry);
865 curcop->cop_line = GvLINE(gv);
866 filegv = GvFILEGV(gv);
867 curcop->cop_filegv = filegv;
868 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
870 warn("Name \"%s::%s\" used only once: possible typo",
871 HvNAME(stash), GvNAME(gv));
881 return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)gensym++),
885 /* hopefully this is only called on local symbol table entries */
894 /* multi-named GPs cannot be used for method cache */
895 SvREFCNT_dec(gp->gp_cv);
900 /* Adding a new name to a subroutine invalidates method cache */
914 if (!gv || !(gp = GvGP(gv)))
916 if (gp->gp_refcnt == 0) {
917 warn("Attempt to free unreferenced glob pointers");
921 /* Deleting the name of a subroutine invalidates method cache */
924 if (--gp->gp_refcnt > 0) {
925 if (gp->gp_egv == gv)
930 SvREFCNT_dec(gp->gp_sv);
931 SvREFCNT_dec(gp->gp_av);
932 SvREFCNT_dec(gp->gp_hv);
933 SvREFCNT_dec(gp->gp_io);
934 SvREFCNT_dec(gp->gp_cv);
935 SvREFCNT_dec(gp->gp_form);
941 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
945 #ifdef MICROPORT /* Microport 2.4 hack */
950 return GvGP(gv)->gp_av;
952 return GvGP(gv_AVadd(gv))->gp_av;
959 return GvGP(gv)->gp_hv;
961 return GvGP(gv_HVadd(gv))->gp_hv;
963 #endif /* Microport 2.4 hack */
966 /* Updates and caches the CV's */
977 MAGIC* mg=mg_find((SV*)stash,'c');
978 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
981 if (mg && amtp->was_ok_am == amagic_generation
982 && amtp->was_ok_sub == sub_generation)
983 return AMT_AMAGIC(amtp);
984 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
986 for (i=1; i<NofAMmeth; i++) {
987 if (amtp->table[i]) {
988 SvREFCNT_dec(amtp->table[i]);
992 sv_unmagic((SV*)stash, 'c');
994 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
996 amt.was_ok_am = amagic_generation;
997 amt.was_ok_sub = sub_generation;
998 amt.fallback = AMGfallNO;
1001 #ifdef OVERLOAD_VIA_HASH
1002 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
1003 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
1010 /* Work with "fallback" key, which we assume to be first in AMG_names */
1012 if (( cp = (char *)AMG_names[0] ) &&
1013 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
1014 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1015 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1017 for (i = 1; i < NofAMmeth; i++) {
1019 cp = (char *)AMG_names[i];
1021 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
1022 if (svp && ((sv = *svp) != &sv_undef)) {
1023 switch (SvTYPE(sv)) {
1026 if (!SvOK(sv)) break;
1027 gv = gv_fetchmethod(stash, SvPV(sv, na));
1028 if (gv) cv = GvCV(gv);
1032 if (SvTYPE(cv) == SVt_PVCV)
1037 croak("Not a subroutine reference in overload table");
1043 if (!(cv = GvCVu((GV*)sv)))
1044 cv = sv_2cv(sv, &stash, &gv, TRUE);
1049 croak("Method for operation %s not found in package %.256s during blessing\n",
1062 /* Work with "fallback" key, which we assume to be first in AMG_names */
1064 if ( cp = AMG_names[0] ) {
1065 /* Try to find via inheritance. */
1066 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1067 if (gv) sv = GvSV(gv);
1069 if (!gv) goto no_table;
1070 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1071 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1074 for (i = 1; i < NofAMmeth; i++) {
1075 SV *cookie = sv_2mortal(newSVpvf("(%s", cp = AMG_names[i]));
1076 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1077 cp, HvNAME(stash)) );
1078 /* don't fill the cache while looking up! */
1079 gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1);
1081 if(gv && (cv = GvCV(gv))) {
1082 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1083 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1084 /* GvSV contains the name of the method. */
1087 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1088 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1089 if (!SvPOK(GvSV(gv))
1090 || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)),
1093 /* Can be an import stub (created by `can'). */
1095 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1096 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1099 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1100 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1103 cv = GvCV(gv = ngv);
1105 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1106 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1107 GvNAME(CvGV(cv))) );
1111 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1114 AMT_AMAGIC_on(&amt);
1115 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1119 /* Here we have no table: */
1121 AMT_AMAGIC_off(&amt);
1122 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1126 /* During call to this subroutine stack can be reallocated. It is
1127 * advised to call SPAGAIN macro in your code after call */
1130 amagic_call(left,right,method,flags)
1139 CV **cvp=NULL, **ocvp=NULL;
1141 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1142 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1144 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1145 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1146 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1147 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1149 && ((cv = cvp[off=method+assignshift])
1150 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1152 (fl = 1, cv = cvp[off=method])))) {
1153 lr = -1; /* Call method for left argument */
1155 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1158 /* look for substituted methods */
1161 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1162 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1163 right = &sv_yes; lr = -1; assign = 1;
1167 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1168 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1169 right = &sv_yes; lr = -1; assign = 1;
1173 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1176 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1179 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1182 (void)((cv = cvp[off=bool__amg])
1183 || (cv = cvp[off=numer_amg])
1184 || (cv = cvp[off=string_amg]));
1190 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) {
1192 * Just to be extra cautious. Maybe in some
1193 * additional cases sv_setsv is safe, too.
1195 SV* newref = newSVsv(ref);
1196 SvOBJECT_on(newref);
1197 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1203 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1204 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1205 SV* nullsv=sv_2mortal(newSViv(0));
1207 SV* lessp = amagic_call(left,nullsv,
1208 lt_amg,AMGf_noright);
1209 logic = SvTRUE(lessp);
1211 SV* lessp = amagic_call(left,nullsv,
1212 ncmp_amg,AMGf_noright);
1213 logic = (SvNV(lessp) < 0);
1216 if (off==subtr_amg) {
1227 if (cv = cvp[off=subtr_amg]) {
1229 left = sv_2mortal(newSViv(0));
1236 if (!cv) goto not_found;
1237 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1238 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1239 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1240 ? (amtp = (AMT*)mg->mg_ptr)->table
1242 && (cv = cvp[off=method])) { /* Method for right
1245 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1246 && (cvp=ocvp) && (lr = -1))
1247 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1248 && !(flags & AMGf_unary)) {
1249 /* We look for substitution for
1250 * comparison operations and
1252 if (method==concat_amg || method==concat_ass_amg
1253 || method==repeat_amg || method==repeat_ass_amg) {
1254 return NULL; /* Delegate operation to string conversion */
1264 postpr = 1; off=ncmp_amg; break;
1271 postpr = 1; off=scmp_amg; break;
1273 if (off != -1) cv = cvp[off];
1278 not_found: /* No method found, either report or croak */
1279 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1280 notfound = 1; lr = -1;
1281 } else if (cvp && (cv=cvp[nomethod_amg])) {
1282 notfound = 1; lr = 1;
1285 if (off==-1) off=method;
1286 msg = sv_2mortal(newSVpvf(
1287 "Operation `%s': no method found,%sargument %s%s%s%s",
1288 AMG_names[method + assignshift],
1289 (flags & AMGf_unary ? " " : "\n\tleft "),
1291 "in overloaded package ":
1292 "has no overloaded magic",
1294 HvNAME(SvSTASH(SvRV(left))):
1297 ",\n\tright argument in overloaded package ":
1300 : ",\n\tright argument has no overloaded magic"),
1302 HvNAME(SvSTASH(SvRV(right))):
1304 if (amtp && amtp->fallback >= AMGfallYES) {
1305 DEBUG_o( deb("%s", SvPVX(msg)) );
1315 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n",
1317 method+assignshift==off? "" :
1319 method+assignshift==off? "" :
1320 AMG_names[method+assignshift],
1321 method+assignshift==off? "" : "')",
1322 flags & AMGf_unary? "" :
1323 lr==1 ? " for right argument": " for left argument",
1324 flags & AMGf_unary? " for argument" : "",
1326 fl? ",\n\tassignment variant used": "") );
1327 /* Since we use shallow copy during assignment, we need
1328 * to dublicate the contents, probably calling user-supplied
1329 * version of copy operator
1331 if ((method + assignshift==off
1332 && (assign || method==inc_amg || method==dec_amg))
1333 || inc_dec_ass) RvDEEPCP(left);
1340 bool oldcatch = CATCH_GET;
1343 Zero(&myop, 1, BINOP);
1344 myop.op_last = (OP *) &myop;
1345 myop.op_next = Nullop;
1346 myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
1351 if (perldb && curstash != debstash)
1352 op->op_private |= OPpENTERSUB_DB;
1356 EXTEND(sp, notfound + 5);
1357 PUSHs(lr>0? right: left);
1358 PUSHs(lr>0? left: right);
1359 PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no ));
1361 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1366 if (op = pp_entersub(ARGS))
1373 CATCH_SET(oldcatch);
1380 ans=SvIV(res)<=0; break;
1383 ans=SvIV(res)<0; break;
1386 ans=SvIV(res)>=0; break;
1389 ans=SvIV(res)>0; break;
1392 ans=SvIV(res)==0; break;
1395 ans=SvIV(res)!=0; break;
1398 SvSetSV(left,res); return left;
1400 ans=!SvOK(res); break;
1403 } else if (method==copy_amg) {
1405 croak("Copy method did not return a reference");
1407 return SvREFCNT_inc(SvRV(res));
1413 #endif /* OVERLOAD */