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)
99 sv_upgrade((SV*)gv, SVt_PVGV);
102 Newz(602, gp, 1, GP);
103 GvGP(gv) = gp_ref(gp);
104 GvSV(gv) = NEWSV(72,0);
105 GvLINE(gv) = curcop->cop_line;
106 GvFILEGV(gv) = curcop->cop_filegv;
108 sv_magic((SV*)gv, (SV*)gv, '*', name, len);
110 GvNAME(gv) = savepvn(name, len);
117 gv_init_sv(gv, sv_type)
135 gv_fetchmeth(stash, name, len, level)
149 if ((level > 100) || (level < -100))
150 croak("Recursive inheritance detected");
152 DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) );
154 gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
159 if (SvTYPE(topgv) != SVt_PVGV)
160 gv_init(topgv, stash, name, len, TRUE);
161 if (cv = GvCV(topgv)) {
162 /* If genuine method or valid cache entry, use it */
163 if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation)
165 /* Stale cached entry: junk it */
167 GvCV(topgv) = cv = Nullcv;
172 gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE);
173 av = (gvp && (gv = *gvp) && gv != (GV*)&sv_undef) ? GvAV(gv) : Nullav;
175 /* create @.*::SUPER::ISA on demand */
177 char* packname = HvNAME(stash);
178 STRLEN packlen = strlen(packname);
180 if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) {
184 basestash = gv_stashpvn(packname, packlen, TRUE);
185 gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE);
186 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
187 dTHR; /* just for SvREFCNT_dec */
188 gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE);
189 if (!gvp || !(gv = *gvp))
190 croak("Cannot create %s::ISA", HvNAME(stash));
191 if (SvTYPE(gv) != SVt_PVGV)
192 gv_init(gv, stash, "ISA", 3, TRUE);
193 SvREFCNT_dec(GvAV(gv));
194 GvAV(gv) = (AV*)SvREFCNT_inc(av);
200 SV** svp = AvARRAY(av);
201 I32 items = AvFILL(av) + 1;
204 HV* basestash = gv_stashsv(sv, FALSE);
207 warn("Can't locate package %s for @%s::ISA",
208 SvPVX(sv), HvNAME(stash));
211 gv = gv_fetchmeth(basestash, name, len,
212 (level >= 0) ? level + 1 : level - 1);
218 /* if at top level, try UNIVERSAL */
220 if (level == 0 || level == -1) {
223 if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) {
224 if (gv = gv_fetchmeth(lastchance, name, len,
225 (level >= 0) ? level + 1 : level - 1)) {
228 * Cache method in topgv if:
229 * 1. topgv has no synonyms (else inheritance crosses wires)
230 * 2. method isn't a stub (else AUTOLOAD fails spectacularly)
233 GvREFCNT(topgv) == 1 &&
235 (CvROOT(cv) || CvXSUB(cv)))
237 dTHR; /* just for SvREFCNT_inc */
238 if (cv = GvCV(topgv))
240 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
241 GvCVGEN(topgv) = sub_generation;
252 gv_fetchmethod(stash, name)
256 return gv_fetchmethod_autoload(stash, name, TRUE);
260 gv_fetchmethod_autoload(stash, name, autoload)
270 for (nend = name; *nend; nend++) {
273 else if (*nend == ':' && *(nend + 1) == ':')
277 char *origname = name;
281 if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
282 /* ->SUPER::method should really be looked up in original stash */
283 SV *tmpstr = sv_2mortal(newSVpvf("%s::SUPER",
284 HvNAME(curcop->cop_stash)));
285 stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
286 DEBUG_o( deb("Treating %s as %s::%s\n",
287 origname, HvNAME(stash), name) );
290 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
293 gv = gv_fetchmeth(stash, name, nend - name, 0);
295 if (strEQ(name,"import"))
298 gv = gv_autoload4(stash, name, nend - name, TRUE);
302 if (!CvROOT(cv) && !CvXSUB(cv)) {
310 if (GvCV(stubgv) != cv) /* orphaned import */
313 autogv = gv_autoload4(GvSTASH(stubgv),
314 GvNAME(stubgv), GvNAMELEN(stubgv), TRUE);
324 gv_autoload4(stash, name, len, method)
330 static char autoload[] = "AUTOLOAD";
331 static STRLEN autolen = 8;
338 if (len == autolen && strnEQ(name, autoload, autolen))
340 if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
345 * Inheriting AUTOLOAD for non-methods works ... for now.
347 if (dowarn && !method && (GvCVGEN(gv) || GvSTASH(gv) != stash))
349 "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
350 HvNAME(stash), (int)len, name);
353 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
354 * The subroutine's original name may not be "AUTOLOAD", so we don't
355 * use that, but for lack of anything better we will use the sub's
356 * original package to look up $AUTOLOAD.
358 varstash = GvSTASH(CvGV(cv));
359 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
361 gv_init(vargv, varstash, autoload, autolen, FALSE);
363 sv_setpv(varsv, HvNAME(stash));
364 sv_catpvn(varsv, "::", 2);
365 sv_catpvn(varsv, name, len);
366 SvTAINTED_off(varsv);
371 gv_stashpv(name,create)
375 return gv_stashpvn(name, strlen(name), create);
379 gv_stashpvn(name,namelen,create)
389 if (namelen + 3 < sizeof smallbuf)
392 New(606, tmpbuf, namelen + 3, char);
393 Copy(name,tmpbuf,namelen,char);
394 tmpbuf[namelen++] = ':';
395 tmpbuf[namelen++] = ':';
396 tmpbuf[namelen] = '\0';
397 tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV);
398 if (tmpbuf != smallbuf)
403 GvHV(tmpgv) = newHV();
406 HvNAME(stash) = savepv(name);
411 gv_stashsv(sv,create)
418 return gv_stashpvn(ptr, len, create);
423 gv_fetchpv(nambeg,add,sv_type)
429 register char *name = nambeg;
433 register char *namend;
438 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
441 for (namend = name; *namend; namend++) {
442 if ((*namend == '\'' && namend[1]) ||
443 (*namend == ':' && namend[1] == ':'))
447 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
452 New(601, tmpbuf, len+3, char);
453 Copy(name, tmpbuf, len, char);
457 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
459 if (!gvp || *gvp == (GV*)&sv_undef)
463 if (SvTYPE(gv) == SVt_PVGV)
468 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
470 if (!(stash = GvHV(gv)))
471 stash = GvHV(gv) = newHV();
474 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
482 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
489 /* No stash in name, so see how we can default */
492 if (isIDFIRST(*name)) {
495 if (isUPPER(*name)) {
497 if (*name == 'S' && (
498 strEQ(name, "SIG") ||
499 strEQ(name, "STDIN") ||
500 strEQ(name, "STDOUT") ||
501 strEQ(name, "STDERR") ))
504 else if (*name > 'E') {
505 if (*name == 'I' && strEQ(name, "INC"))
508 else if (*name > 'A') {
509 if (*name == 'E' && strEQ(name, "ENV"))
512 else if (*name == 'A' && (
513 strEQ(name, "ARGV") ||
514 strEQ(name, "ARGVOUT") ))
517 else if (*name == '_' && !name[1])
522 else if ((COP*)curcop == &compiling) {
524 if (add && (hints & HINT_STRICT_VARS) &&
525 sv_type != SVt_PVCV &&
526 sv_type != SVt_PVGV &&
527 sv_type != SVt_PVFM &&
528 sv_type != SVt_PVIO &&
529 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
531 gvp = (GV**)hv_fetch(stash,name,len,0);
533 *gvp == (GV*)&sv_undef ||
534 SvTYPE(*gvp) != SVt_PVGV)
538 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
539 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
540 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
542 warn("Variable \"%c%s\" is not imported",
543 sv_type == SVt_PVAV ? '@' :
544 sv_type == SVt_PVHV ? '%' : '$',
547 warn("(Did you mean &%s instead?)\n", name);
553 stash = curcop->cop_stash;
559 /* By this point we should have a stash and a name */
563 warn("Global symbol \"%s\" requires explicit package name", name);
565 stash = curstash ? curstash : defstash; /* avoid core dumps */
566 add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV
567 : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV
568 : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV
575 if (!SvREFCNT(stash)) /* symbol table under destruction */
578 gvp = (GV**)hv_fetch(stash,name,len,add);
579 if (!gvp || *gvp == (GV*)&sv_undef)
582 if (SvTYPE(gv) == SVt_PVGV) {
585 gv_init_sv(gv, sv_type);
590 /* Adding a new symbol */
593 warn("Had to create %s unexpectedly", nambeg);
594 gv_init(gv, stash, name, len, add & 2);
595 gv_init_sv(gv, sv_type);
596 GvFLAGS(gv) |= add_gvflags;
598 /* set up magic where warranted */
601 if (strEQ(name, "ARGV")) {
602 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
612 if (strnEQ(name, "EXPORT", 6))
616 if (strEQ(name, "ISA")) {
619 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
620 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
623 av_push(av, newSVpv(pname = "NDBM_File",0));
624 gv_stashpvn(pname, 9, TRUE);
625 av_push(av, newSVpv(pname = "DB_File",0));
626 gv_stashpvn(pname, 7, TRUE);
627 av_push(av, newSVpv(pname = "GDBM_File",0));
628 gv_stashpvn(pname, 9, TRUE);
629 av_push(av, newSVpv(pname = "SDBM_File",0));
630 gv_stashpvn(pname, 9, TRUE);
631 av_push(av, newSVpv(pname = "ODBM_File",0));
632 gv_stashpvn(pname, 9, TRUE);
638 if (strEQ(name, "OVERLOAD")) {
641 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
644 #endif /* OVERLOAD */
646 if (strEQ(name, "SIG")) {
652 hv_magic(hv, siggv, 'S');
653 for(i=1;sig_name[i];i++) {
655 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
657 sv_setsv(*init,&sv_undef);
661 /* initialize signal stack */
662 signalstack = newAV();
663 AvREAL_off(signalstack);
664 av_extend(signalstack, 30);
665 av_fill(signalstack, 0);
693 sv_setpv(GvSV(gv),chopset);
699 #ifdef COMPLEX_STATUS
700 sv_upgrade(GvSV(gv), SVt_PVLV);
706 if (dowarn && len == 1 && sv_type == SVt_PV)
707 warn("Use of $%s is deprecated", name);
750 SvREADONLY_on(GvSV(gv));
752 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
758 sv_setpv(GvSV(gv),"\f");
764 sv_setpv(GvSV(gv),"\034");
769 sv_upgrade(sv, SVt_PVNV);
770 sv_setpv(sv, patchlevel);
780 gv_fullname3(sv, gv, prefix)
785 HV *hv = GvSTASH(gv);
790 sv_setpv(sv, prefix ? prefix : "");
791 sv_catpv(sv,HvNAME(hv));
792 sv_catpvn(sv,"::", 2);
793 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
797 gv_efullname3(sv, gv, prefix)
805 gv_fullname3(sv, egv, prefix);
808 /* XXX compatibility with versions <= 5.003. */
814 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
817 /* XXX compatibility with versions <= 5.003. */
823 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
833 io = (IO*)NEWSV(0,0);
834 sv_upgrade((SV *)io,SVt_PVIO);
837 iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV);
839 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
840 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
857 for (i = 0; i <= (I32) HvMAX(stash); i++) {
858 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
859 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
860 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
863 gv_check(hv); /* nested package */
865 else if (isALPHA(*HeKEY(entry))) {
866 gv = (GV*)HeVAL(entry);
869 curcop->cop_line = GvLINE(gv);
870 filegv = GvFILEGV(gv);
871 curcop->cop_filegv = filegv;
872 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
874 warn("Name \"%s::%s\" used only once: possible typo",
875 HvNAME(stash), GvNAME(gv));
885 return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)gensym++),
889 /* hopefully this is only called on local symbol table entries */
898 /* multi-named GPs cannot be used for method cache */
899 SvREFCNT_dec(gp->gp_cv);
904 /* Adding a new name to a subroutine invalidates method cache */
918 if (!gv || !(gp = GvGP(gv)))
920 if (gp->gp_refcnt == 0) {
921 warn("Attempt to free unreferenced glob pointers");
925 /* Deleting the name of a subroutine invalidates method cache */
928 if (--gp->gp_refcnt > 0) {
929 if (gp->gp_egv == gv)
934 SvREFCNT_dec(gp->gp_sv);
935 SvREFCNT_dec(gp->gp_av);
936 SvREFCNT_dec(gp->gp_hv);
937 SvREFCNT_dec(gp->gp_io);
938 SvREFCNT_dec(gp->gp_cv);
939 SvREFCNT_dec(gp->gp_form);
945 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
949 #ifdef MICROPORT /* Microport 2.4 hack */
954 return GvGP(gv)->gp_av;
956 return GvGP(gv_AVadd(gv))->gp_av;
963 return GvGP(gv)->gp_hv;
965 return GvGP(gv_HVadd(gv))->gp_hv;
967 #endif /* Microport 2.4 hack */
970 /* Updates and caches the CV's */
981 MAGIC* mg=mg_find((SV*)stash,'c');
982 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
985 if (mg && amtp->was_ok_am == amagic_generation
986 && amtp->was_ok_sub == sub_generation)
987 return AMT_AMAGIC(amtp);
988 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
990 for (i=1; i<NofAMmeth; i++) {
991 if (amtp->table[i]) {
992 SvREFCNT_dec(amtp->table[i]);
996 sv_unmagic((SV*)stash, 'c');
998 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
1000 amt.was_ok_am = amagic_generation;
1001 amt.was_ok_sub = sub_generation;
1002 amt.fallback = AMGfallNO;
1005 #ifdef OVERLOAD_VIA_HASH
1006 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
1007 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
1014 /* Work with "fallback" key, which we assume to be first in AMG_names */
1016 if (( cp = (char *)AMG_names[0] ) &&
1017 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
1018 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1019 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1021 for (i = 1; i < NofAMmeth; i++) {
1023 cp = (char *)AMG_names[i];
1025 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
1026 if (svp && ((sv = *svp) != &sv_undef)) {
1027 switch (SvTYPE(sv)) {
1030 if (!SvOK(sv)) break;
1031 gv = gv_fetchmethod(stash, SvPV(sv, na));
1032 if (gv) cv = GvCV(gv);
1036 if (SvTYPE(cv) == SVt_PVCV)
1041 croak("Not a subroutine reference in overload table");
1047 if (!(cv = GvCVu((GV*)sv)))
1048 cv = sv_2cv(sv, &stash, &gv, TRUE);
1053 croak("Method for operation %s not found in package %.256s during blessing\n",
1066 /* Work with "fallback" key, which we assume to be first in AMG_names */
1068 if ( cp = AMG_names[0] ) {
1069 /* Try to find via inheritance. */
1070 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1071 if (gv) sv = GvSV(gv);
1073 if (!gv) goto no_table;
1074 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1075 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1078 for (i = 1; i < NofAMmeth; i++) {
1079 SV *cookie = sv_2mortal(newSVpvf("(%s", cp = AMG_names[i]));
1080 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1081 cp, HvNAME(stash)) );
1082 /* don't fill the cache while looking up! */
1083 gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1);
1085 if(gv && (cv = GvCV(gv))) {
1086 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1087 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1088 /* GvSV contains the name of the method. */
1091 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1092 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1093 if (!SvPOK(GvSV(gv))
1094 || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)),
1097 /* Can be an import stub (created by `can'). */
1099 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1100 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1103 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1104 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1107 cv = GvCV(gv = ngv);
1109 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1110 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1111 GvNAME(CvGV(cv))) );
1115 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1118 AMT_AMAGIC_on(&amt);
1119 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1123 /* Here we have no table: */
1125 AMT_AMAGIC_off(&amt);
1126 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1130 /* During call to this subroutine stack can be reallocated. It is
1131 * advised to call SPAGAIN macro in your code after call */
1134 amagic_call(left,right,method,flags)
1143 CV **cvp=NULL, **ocvp=NULL;
1145 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1146 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1148 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1149 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1150 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1151 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1153 && ((cv = cvp[off=method+assignshift])
1154 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1156 (fl = 1, cv = cvp[off=method])))) {
1157 lr = -1; /* Call method for left argument */
1159 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1162 /* look for substituted methods */
1165 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1166 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1167 right = &sv_yes; lr = -1; assign = 1;
1171 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1172 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1173 right = &sv_yes; lr = -1; assign = 1;
1177 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1180 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1183 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1186 (void)((cv = cvp[off=bool__amg])
1187 || (cv = cvp[off=numer_amg])
1188 || (cv = cvp[off=string_amg]));
1194 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) {
1196 * Just to be extra cautious. Maybe in some
1197 * additional cases sv_setsv is safe, too.
1199 SV* newref = newSVsv(ref);
1200 SvOBJECT_on(newref);
1201 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1207 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1208 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1209 SV* nullsv=sv_2mortal(newSViv(0));
1211 SV* lessp = amagic_call(left,nullsv,
1212 lt_amg,AMGf_noright);
1213 logic = SvTRUE(lessp);
1215 SV* lessp = amagic_call(left,nullsv,
1216 ncmp_amg,AMGf_noright);
1217 logic = (SvNV(lessp) < 0);
1220 if (off==subtr_amg) {
1231 if (cv = cvp[off=subtr_amg]) {
1233 left = sv_2mortal(newSViv(0));
1240 if (!cv) goto not_found;
1241 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1242 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1243 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1244 ? (amtp = (AMT*)mg->mg_ptr)->table
1246 && (cv = cvp[off=method])) { /* Method for right
1249 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1250 && (cvp=ocvp) && (lr = -1))
1251 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1252 && !(flags & AMGf_unary)) {
1253 /* We look for substitution for
1254 * comparison operations and
1256 if (method==concat_amg || method==concat_ass_amg
1257 || method==repeat_amg || method==repeat_ass_amg) {
1258 return NULL; /* Delegate operation to string conversion */
1268 postpr = 1; off=ncmp_amg; break;
1275 postpr = 1; off=scmp_amg; break;
1277 if (off != -1) cv = cvp[off];
1282 not_found: /* No method found, either report or croak */
1283 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1284 notfound = 1; lr = -1;
1285 } else if (cvp && (cv=cvp[nomethod_amg])) {
1286 notfound = 1; lr = 1;
1289 if (off==-1) off=method;
1290 msg = sv_2mortal(newSVpvf(
1291 "Operation `%s': no method found,%sargument %s%s%s%s",
1292 AMG_names[method + assignshift],
1293 (flags & AMGf_unary ? " " : "\n\tleft "),
1295 "in overloaded package ":
1296 "has no overloaded magic",
1298 HvNAME(SvSTASH(SvRV(left))):
1301 ",\n\tright argument in overloaded package ":
1304 : ",\n\tright argument has no overloaded magic"),
1306 HvNAME(SvSTASH(SvRV(right))):
1308 if (amtp && amtp->fallback >= AMGfallYES) {
1309 DEBUG_o( deb("%s", SvPVX(msg)) );
1319 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n",
1321 method+assignshift==off? "" :
1323 method+assignshift==off? "" :
1324 AMG_names[method+assignshift],
1325 method+assignshift==off? "" : "')",
1326 flags & AMGf_unary? "" :
1327 lr==1 ? " for right argument": " for left argument",
1328 flags & AMGf_unary? " for argument" : "",
1330 fl? ",\n\tassignment variant used": "") );
1331 /* Since we use shallow copy during assignment, we need
1332 * to dublicate the contents, probably calling user-supplied
1333 * version of copy operator
1335 if ((method + assignshift==off
1336 && (assign || method==inc_amg || method==dec_amg))
1337 || inc_dec_ass) RvDEEPCP(left);
1344 bool oldcatch = CATCH_GET;
1347 Zero(&myop, 1, BINOP);
1348 myop.op_last = (OP *) &myop;
1349 myop.op_next = Nullop;
1350 myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
1355 if (PERLDB_SUB && curstash != debstash)
1356 op->op_private |= OPpENTERSUB_DB;
1360 EXTEND(sp, notfound + 5);
1361 PUSHs(lr>0? right: left);
1362 PUSHs(lr>0? left: right);
1363 PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no ));
1365 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1370 if (op = pp_entersub(ARGS))
1377 CATCH_SET(oldcatch);
1384 ans=SvIV(res)<=0; break;
1387 ans=SvIV(res)<0; break;
1390 ans=SvIV(res)>=0; break;
1393 ans=SvIV(res)>0; break;
1396 ans=SvIV(res)==0; break;
1399 ans=SvIV(res)!=0; break;
1402 SvSetSV(left,res); return left;
1404 ans=!SvOK(res); break;
1407 } else if (method==copy_amg) {
1409 croak("Copy method did not return a reference");
1411 return SvREFCNT_inc(SvRV(res));
1417 #endif /* OVERLOAD */