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)) {
216 * Cache method in topgv if:
217 * 1. topgv has no synonyms (else inheritance crosses wires)
218 * 2. method isn't a stub (else AUTOLOAD fails spectacularly)
221 GvREFCNT(topgv) == 1 &&
223 (CvROOT(cv) || CvXSUB(cv)))
225 if (cv = GvCV(topgv))
227 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
228 GvCVGEN(topgv) = sub_generation;
239 gv_fetchmethod(stash, name)
243 return gv_fetchmethod_autoload(stash, name, TRUE);
247 gv_fetchmethod_autoload(stash, name, autoload)
256 for (nend = name; *nend; nend++) {
259 else if (*nend == ':' && *(nend + 1) == ':')
263 char *origname = name;
267 if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
268 /* ->SUPER::method should really be looked up in original stash */
269 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash), 0));
270 sv_catpvn(tmpstr, "::SUPER", 7);
271 stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
272 DEBUG_o( deb("Treating %s as %s::%s\n",
273 origname, HvNAME(stash), name) );
276 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
279 gv = gv_fetchmeth(stash, name, nend - name, 0);
281 if (strEQ(name,"import"))
284 gv = gv_autoload4(stash, name, nend - name, TRUE);
288 if (!CvROOT(cv) && !CvXSUB(cv)) {
296 if (GvCV(stubgv) != cv) /* orphaned import */
299 autogv = gv_autoload4(GvSTASH(stubgv),
300 GvNAME(stubgv), GvNAMELEN(stubgv), TRUE);
310 gv_autoload4(stash, name, len, method)
316 static char autoload[] = "AUTOLOAD";
317 static STRLEN autolen = 8;
324 if (len == autolen && strnEQ(name, autoload, autolen))
326 if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
331 * Inheriting AUTOLOAD for non-methods works ... for now.
333 if (dowarn && !method && (GvCVGEN(gv) || GvSTASH(gv) != stash))
335 "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
336 HvNAME(stash), (int)len, name);
339 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
340 * The subroutine's original name may not be "AUTOLOAD", so we don't
341 * use that, but for lack of anything better we will use the sub's
342 * original package to look up $AUTOLOAD.
344 varstash = GvSTASH(CvGV(cv));
345 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
347 gv_init(vargv, varstash, autoload, autolen, FALSE);
349 sv_setpv(varsv, HvNAME(stash));
350 sv_catpvn(varsv, "::", 2);
351 sv_catpvn(varsv, name, len);
352 SvTAINTED_off(varsv);
357 gv_stashpv(name,create)
361 return gv_stashpvn(name, strlen(name), create);
365 gv_stashpvn(name,namelen,create)
374 if (namelen > 1200) {
377 warn("Weird package name \"%s\" truncated", name);
379 warn("Weird package name \"%.*s...\" truncated", (int)namelen, name);
382 Copy(name,tmpbuf,namelen,char);
383 tmpbuf[namelen++] = ':';
384 tmpbuf[namelen++] = ':';
385 tmpbuf[namelen] = '\0';
386 tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV);
390 GvHV(tmpgv) = newHV();
393 HvNAME(stash) = savepv(name);
398 gv_stashsv(sv,create)
405 return gv_stashpvn(ptr, len, create);
410 gv_fetchpv(nambeg,add,sv_type)
415 register char *name = nambeg;
419 register char *namend;
424 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
427 for (namend = name; *namend; namend++) {
428 if ((*namend == '\'' && namend[1]) ||
429 (*namend == ':' && namend[1] == ':'))
433 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
438 New(601, tmpbuf, len+3, char);
439 Copy(name, tmpbuf, len, char);
443 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
445 if (!gvp || *gvp == (GV*)&sv_undef)
449 if (SvTYPE(gv) == SVt_PVGV)
454 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
456 if (!(stash = GvHV(gv)))
457 stash = GvHV(gv) = newHV();
460 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
468 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
475 /* No stash in name, so see how we can default */
478 if (isIDFIRST(*name)) {
481 if (isUPPER(*name)) {
483 if (*name == 'S' && (
484 strEQ(name, "SIG") ||
485 strEQ(name, "STDIN") ||
486 strEQ(name, "STDOUT") ||
487 strEQ(name, "STDERR") ))
490 else if (*name > 'E') {
491 if (*name == 'I' && strEQ(name, "INC"))
494 else if (*name > 'A') {
495 if (*name == 'E' && strEQ(name, "ENV"))
498 else if (*name == 'A' && (
499 strEQ(name, "ARGV") ||
500 strEQ(name, "ARGVOUT") ))
503 else if (*name == '_' && !name[1])
508 else if ((COP*)curcop == &compiling) {
510 if (add && (hints & HINT_STRICT_VARS) &&
511 sv_type != SVt_PVCV &&
512 sv_type != SVt_PVGV &&
513 sv_type != SVt_PVFM &&
514 sv_type != SVt_PVIO &&
515 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
517 gvp = (GV**)hv_fetch(stash,name,len,0);
519 *gvp == (GV*)&sv_undef ||
520 SvTYPE(*gvp) != SVt_PVGV)
524 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
525 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
526 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
528 warn("Variable \"%c%s\" is not imported",
529 sv_type == SVt_PVAV ? '@' :
530 sv_type == SVt_PVHV ? '%' : '$',
533 warn("(Did you mean &%s instead?)\n", name);
539 stash = curcop->cop_stash;
545 /* By this point we should have a stash and a name */
549 warn("Global symbol \"%s\" requires explicit package name", name);
551 stash = curstash ? curstash : defstash; /* avoid core dumps */
552 add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV
553 : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV
554 : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV
561 if (!SvREFCNT(stash)) /* symbol table under destruction */
564 gvp = (GV**)hv_fetch(stash,name,len,add);
565 if (!gvp || *gvp == (GV*)&sv_undef)
568 if (SvTYPE(gv) == SVt_PVGV) {
571 gv_init_sv(gv, sv_type);
576 /* Adding a new symbol */
579 warn("Had to create %s unexpectedly", nambeg);
580 gv_init(gv, stash, name, len, add & 2);
581 gv_init_sv(gv, sv_type);
582 GvFLAGS(gv) |= add_gvflags;
584 /* set up magic where warranted */
587 if (strEQ(name, "ARGV")) {
588 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
598 if (strnEQ(name, "EXPORT", 6))
602 if (strEQ(name, "ISA")) {
605 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
606 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
609 av_push(av, newSVpv(pname = "NDBM_File",0));
610 gv_stashpvn(pname, 9, TRUE);
611 av_push(av, newSVpv(pname = "DB_File",0));
612 gv_stashpvn(pname, 7, TRUE);
613 av_push(av, newSVpv(pname = "GDBM_File",0));
614 gv_stashpvn(pname, 9, TRUE);
615 av_push(av, newSVpv(pname = "SDBM_File",0));
616 gv_stashpvn(pname, 9, TRUE);
617 av_push(av, newSVpv(pname = "ODBM_File",0));
618 gv_stashpvn(pname, 9, TRUE);
624 if (strEQ(name, "OVERLOAD")) {
627 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
630 #endif /* OVERLOAD */
632 if (strEQ(name, "SIG")) {
638 hv_magic(hv, siggv, 'S');
639 for(i=1;sig_name[i];i++) {
641 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
643 sv_setsv(*init,&sv_undef);
647 /* initialize signal stack */
648 signalstack = newAV();
649 AvREAL_off(signalstack);
650 av_extend(signalstack, 30);
651 av_fill(signalstack, 0);
679 sv_setpv(GvSV(gv),chopset);
685 #ifdef COMPLEX_STATUS
686 sv_upgrade(GvSV(gv), SVt_PVLV);
692 if (dowarn && len == 1 && sv_type == SVt_PV)
693 warn("Use of $%s is deprecated", name);
736 SvREADONLY_on(GvSV(gv));
738 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
744 sv_setpv(GvSV(gv),"\f");
750 sv_setpv(GvSV(gv),"\034");
755 sv_upgrade(sv, SVt_PVNV);
756 sv_setpv(sv, patchlevel);
766 gv_fullname3(sv, gv, prefix)
771 HV *hv = GvSTASH(gv);
776 sv_setpv(sv, prefix ? prefix : "");
777 sv_catpv(sv,HvNAME(hv));
778 sv_catpvn(sv,"::", 2);
779 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
783 gv_efullname3(sv, gv, prefix)
791 gv_fullname3(sv, egv, prefix);
794 /* XXX compatibility with versions <= 5.003. */
800 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
803 /* XXX compatibility with versions <= 5.003. */
809 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
818 io = (IO*)NEWSV(0,0);
819 sv_upgrade((SV *)io,SVt_PVIO);
822 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
823 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
839 for (i = 0; i <= (I32) HvMAX(stash); i++) {
840 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
841 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
842 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
845 gv_check(hv); /* nested package */
847 else if (isALPHA(*HeKEY(entry))) {
848 gv = (GV*)HeVAL(entry);
851 curcop->cop_line = GvLINE(gv);
852 filegv = GvFILEGV(gv);
853 curcop->cop_filegv = filegv;
854 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
856 warn("Name \"%s::%s\" used only once: possible typo",
857 HvNAME(stash), GvNAME(gv));
867 (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
868 return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
871 /* hopefully this is only called on local symbol table entries */
880 /* multi-named GPs cannot be used for method cache */
881 SvREFCNT_dec(gp->gp_cv);
886 /* Adding a new name to a subroutine invalidates method cache */
900 if (!gv || !(gp = GvGP(gv)))
902 if (gp->gp_refcnt == 0) {
903 warn("Attempt to free unreferenced glob pointers");
907 /* Deleting the name of a subroutine invalidates method cache */
910 if (--gp->gp_refcnt > 0) {
911 if (gp->gp_egv == gv)
916 SvREFCNT_dec(gp->gp_sv);
917 SvREFCNT_dec(gp->gp_av);
918 SvREFCNT_dec(gp->gp_hv);
919 SvREFCNT_dec(gp->gp_io);
920 SvREFCNT_dec(gp->gp_cv);
921 SvREFCNT_dec(gp->gp_form);
927 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
931 #ifdef MICROPORT /* Microport 2.4 hack */
936 return GvGP(gv)->gp_av;
938 return GvGP(gv_AVadd(gv))->gp_av;
945 return GvGP(gv)->gp_hv;
947 return GvGP(gv_HVadd(gv))->gp_hv;
949 #endif /* Microport 2.4 hack */
952 /* Updates and caches the CV's */
962 MAGIC* mg=mg_find((SV*)stash,'c');
963 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
966 if (mg && amtp->was_ok_am == amagic_generation
967 && amtp->was_ok_sub == sub_generation)
968 return AMT_AMAGIC(amtp);
969 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
971 for (i=1; i<NofAMmeth; i++) {
972 if (amtp->table[i]) {
973 SvREFCNT_dec(amtp->table[i]);
977 sv_unmagic((SV*)stash, 'c');
979 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
981 amt.was_ok_am = amagic_generation;
982 amt.was_ok_sub = sub_generation;
983 amt.fallback = AMGfallNO;
986 #ifdef OVERLOAD_VIA_HASH
987 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
988 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
995 /* Work with "fallback" key, which we assume to be first in AMG_names */
997 if (( cp = (char *)AMG_names[0] ) &&
998 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
999 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1000 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1002 for (i = 1; i < NofAMmeth; i++) {
1004 cp = (char *)AMG_names[i];
1006 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
1007 if (svp && ((sv = *svp) != &sv_undef)) {
1008 switch (SvTYPE(sv)) {
1011 if (!SvOK(sv)) break;
1012 gv = gv_fetchmethod(stash, SvPV(sv, na));
1013 if (gv) cv = GvCV(gv);
1017 if (SvTYPE(cv) == SVt_PVCV)
1022 croak("Not a subroutine reference in overload table");
1028 if (!(cv = GvCVu((GV*)sv)))
1029 cv = sv_2cv(sv, &stash, &gv, TRUE);
1034 croak("Method for operation %s not found in package %.256s during blessing\n",
1047 /* Work with "fallback" key, which we assume to be first in AMG_names */
1049 if ( cp = AMG_names[0] ) {
1050 /* Try to find via inheritance. */
1051 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1052 if (gv) sv = GvSV(gv);
1054 if (!gv) goto no_table;
1055 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1056 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1059 for (i = 1; i < NofAMmeth; i++) {
1063 *buf = '('; /* A cookie: "(". */
1064 strcpy(buf + 1, cp);
1065 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1066 cp, HvNAME(stash)) );
1067 gv = gv_fetchmeth(stash, buf, strlen(buf), -1); /* no filling stash! */
1068 if(gv && (cv = GvCV(gv))) {
1070 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1071 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1072 /* GvSV contains the name of the method. */
1075 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1076 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1077 if (!SvPOK(GvSV(gv))
1078 || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)),
1081 /* Can be an import stub (created by `can'). */
1083 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1084 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1087 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1088 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1091 name = SvPVX(GvSV(gv));
1092 cv = GvCV(gv = ngv);
1094 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1095 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1096 GvNAME(CvGV(cv))) );
1100 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1103 AMT_AMAGIC_on(&amt);
1104 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1108 /* Here we have no table: */
1110 AMT_AMAGIC_off(&amt);
1111 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1115 /* During call to this subroutine stack can be reallocated. It is
1116 * advised to call SPAGAIN macro in your code after call */
1119 amagic_call(left,right,method,flags)
1127 CV **cvp=NULL, **ocvp=NULL;
1129 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1130 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1132 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1133 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1134 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1135 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1137 && ((cv = cvp[off=method+assignshift])
1138 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1140 (fl = 1, cv = cvp[off=method])))) {
1141 lr = -1; /* Call method for left argument */
1143 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1146 /* look for substituted methods */
1149 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1150 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1151 right = &sv_yes; lr = -1; assign = 1;
1155 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1156 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1157 right = &sv_yes; lr = -1; assign = 1;
1161 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1164 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1167 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1170 (void)((cv = cvp[off=bool__amg])
1171 || (cv = cvp[off=numer_amg])
1172 || (cv = cvp[off=string_amg]));
1178 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
1185 SV* newref = newSVsv(ref);
1186 SvOBJECT_on(newref);
1187 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1193 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1194 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1195 SV* nullsv=sv_2mortal(newSViv(0));
1197 SV* lessp = amagic_call(left,nullsv,
1198 lt_amg,AMGf_noright);
1199 logic = SvTRUE(lessp);
1201 SV* lessp = amagic_call(left,nullsv,
1202 ncmp_amg,AMGf_noright);
1203 logic = (SvNV(lessp) < 0);
1206 if (off==subtr_amg) {
1217 if (cv = cvp[off=subtr_amg]) {
1219 left = sv_2mortal(newSViv(0));
1226 if (!cv) goto not_found;
1227 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1228 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1229 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1230 ? (amtp = (AMT*)mg->mg_ptr)->table
1232 && (cv = cvp[off=method])) { /* Method for right
1235 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1236 && (cvp=ocvp) && (lr = -1))
1237 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1238 && !(flags & AMGf_unary)) {
1239 /* We look for substitution for
1240 * comparison operations and
1242 if (method==concat_amg || method==concat_ass_amg
1243 || method==repeat_amg || method==repeat_ass_amg) {
1244 return NULL; /* Delegate operation to string conversion */
1254 postpr = 1; off=ncmp_amg; break;
1261 postpr = 1; off=scmp_amg; break;
1263 if (off != -1) cv = cvp[off];
1268 not_found: /* No method found, either report or croak */
1269 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1270 notfound = 1; lr = -1;
1271 } else if (cvp && (cv=cvp[nomethod_amg])) {
1272 notfound = 1; lr = 1;
1274 if (off==-1) off=method;
1276 "Operation `%s': no method found,%sargument %s%.256s%s%.256s",
1277 AMG_names[method + assignshift],
1278 (flags & AMGf_unary ? " " : "\n\tleft "),
1280 "in overloaded package ":
1281 "has no overloaded magic",
1283 HvNAME(SvSTASH(SvRV(left))):
1286 ",\n\tright argument in overloaded package ":
1289 : ",\n\tright argument has no overloaded magic"),
1291 HvNAME(SvSTASH(SvRV(right))):
1293 if (amtp && amtp->fallback >= AMGfallYES) {
1294 DEBUG_o( deb(buf) );
1304 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n",
1306 method+assignshift==off? "" :
1308 method+assignshift==off? "" :
1309 AMG_names[method+assignshift],
1310 method+assignshift==off? "" : "')",
1311 flags & AMGf_unary? "" :
1312 lr==1 ? " for right argument": " for left argument",
1313 flags & AMGf_unary? " for argument" : "",
1315 fl? ",\n\tassignment variant used": "") );
1316 /* Since we use shallow copy during assignment, we need
1317 * to dublicate the contents, probably calling user-supplied
1318 * version of copy operator
1320 if ((method + assignshift==off
1321 && (assign || method==inc_amg || method==dec_amg))
1322 || inc_dec_ass) RvDEEPCP(left);
1328 bool oldcatch = CATCH_GET;
1331 Zero(&myop, 1, BINOP);
1332 myop.op_last = (OP *) &myop;
1333 myop.op_next = Nullop;
1334 myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
1339 if (perldb && curstash != debstash)
1340 op->op_private |= OPpENTERSUB_DB;
1344 EXTEND(sp, notfound + 5);
1345 PUSHs(lr>0? right: left);
1346 PUSHs(lr>0? left: right);
1347 PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no ));
1349 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1354 if (op = pp_entersub())
1361 CATCH_SET(oldcatch);
1368 ans=SvIV(res)<=0; break;
1371 ans=SvIV(res)<0; break;
1374 ans=SvIV(res)>=0; break;
1377 ans=SvIV(res)>0; break;
1380 ans=SvIV(res)==0; break;
1383 ans=SvIV(res)!=0; break;
1386 SvSetSV(left,res); return left;
1388 ans=!SvOK(res); break;
1391 } else if (method==copy_amg) {
1393 croak("Copy method did not return a reference");
1395 return SvREFCNT_inc(SvRV(res));
1401 #endif /* OVERLOAD */