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");
66 tmplen = strlen(name) + 2;
67 if (tmplen < sizeof smallbuf)
70 New(603, tmpbuf, tmplen + 1, char);
73 strcpy(tmpbuf + 2, name);
74 gv = *(GV**)hv_fetch(defstash, tmpbuf, tmplen, TRUE);
76 gv_init(gv, defstash, tmpbuf, tmplen, FALSE);
77 if (tmpbuf != smallbuf)
79 sv_setpv(GvSV(gv), name);
80 if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm")))
83 hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L');
88 gv_init(gv, stash, name, len, multi)
97 sv_upgrade((SV*)gv, SVt_PVGV);
100 Newz(602, gp, 1, GP);
101 GvGP(gv) = gp_ref(gp);
102 GvSV(gv) = NEWSV(72,0);
103 GvLINE(gv) = curcop->cop_line;
104 GvFILEGV(gv) = curcop->cop_filegv;
106 sv_magic((SV*)gv, (SV*)gv, '*', name, len);
108 GvNAME(gv) = savepvn(name, len);
115 gv_init_sv(gv, sv_type)
133 gv_fetchmeth(stash, name, len, level)
147 if ((level > 100) || (level < -100))
148 croak("Recursive inheritance detected");
150 DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) );
152 gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
157 if (SvTYPE(topgv) != SVt_PVGV)
158 gv_init(topgv, stash, name, len, TRUE);
159 if (cv = GvCV(topgv)) {
160 /* If genuine method or valid cache entry, use it */
161 if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation)
163 /* Stale cached entry: junk it */
165 GvCV(topgv) = cv = Nullcv;
170 gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE);
171 av = (gvp && (gv = *gvp) && gv != (GV*)&sv_undef) ? GvAV(gv) : Nullav;
173 /* create @.*::SUPER::ISA on demand */
175 char* packname = HvNAME(stash);
176 STRLEN packlen = strlen(packname);
178 if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) {
182 basestash = gv_stashpvn(packname, packlen, TRUE);
183 gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE);
184 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
185 gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE);
186 if (!gvp || !(gv = *gvp))
187 croak("Cannot create %s::ISA", HvNAME(stash));
188 if (SvTYPE(gv) != SVt_PVGV)
189 gv_init(gv, stash, "ISA", 3, TRUE);
190 SvREFCNT_dec(GvAV(gv));
191 GvAV(gv) = (AV*)SvREFCNT_inc(av);
197 SV** svp = AvARRAY(av);
198 I32 items = AvFILL(av) + 1;
201 HV* basestash = gv_stashsv(sv, FALSE);
204 warn("Can't locate package %s for @%s::ISA",
205 SvPVX(sv), HvNAME(stash));
208 gv = gv_fetchmeth(basestash, name, len,
209 (level >= 0) ? level + 1 : level - 1);
215 /* if at top level, try UNIVERSAL */
217 if (level == 0 || level == -1) {
220 if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) {
221 if (gv = gv_fetchmeth(lastchance, name, len,
222 (level >= 0) ? level + 1 : level - 1)) {
225 * Cache method in topgv if:
226 * 1. topgv has no synonyms (else inheritance crosses wires)
227 * 2. method isn't a stub (else AUTOLOAD fails spectacularly)
230 GvREFCNT(topgv) == 1 &&
232 (CvROOT(cv) || CvXSUB(cv)))
234 if (cv = GvCV(topgv))
236 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
237 GvCVGEN(topgv) = sub_generation;
248 gv_fetchmethod(stash, name)
252 return gv_fetchmethod_autoload(stash, name, TRUE);
256 gv_fetchmethod_autoload(stash, name, autoload)
265 for (nend = name; *nend; nend++) {
268 else if (*nend == ':' && *(nend + 1) == ':')
272 char *origname = name;
276 if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
277 /* ->SUPER::method should really be looked up in original stash */
278 SV *tmpstr = sv_2mortal(newSVpvf("%s::SUPER",
279 HvNAME(curcop->cop_stash)));
280 stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
281 DEBUG_o( deb("Treating %s as %s::%s\n",
282 origname, HvNAME(stash), name) );
285 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
288 gv = gv_fetchmeth(stash, name, nend - name, 0);
290 if (strEQ(name,"import"))
293 gv = gv_autoload4(stash, name, nend - name, TRUE);
297 if (!CvROOT(cv) && !CvXSUB(cv)) {
305 if (GvCV(stubgv) != cv) /* orphaned import */
308 autogv = gv_autoload4(GvSTASH(stubgv),
309 GvNAME(stubgv), GvNAMELEN(stubgv), TRUE);
319 gv_autoload4(stash, name, len, method)
325 static char autoload[] = "AUTOLOAD";
326 static STRLEN autolen = 8;
333 if (len == autolen && strnEQ(name, autoload, autolen))
335 if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
340 * Inheriting AUTOLOAD for non-methods works ... for now.
342 if (dowarn && !method && (GvCVGEN(gv) || GvSTASH(gv) != stash))
344 "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
345 HvNAME(stash), (int)len, name);
348 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
349 * The subroutine's original name may not be "AUTOLOAD", so we don't
350 * use that, but for lack of anything better we will use the sub's
351 * original package to look up $AUTOLOAD.
353 varstash = GvSTASH(CvGV(cv));
354 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
356 gv_init(vargv, varstash, autoload, autolen, FALSE);
358 sv_setpv(varsv, HvNAME(stash));
359 sv_catpvn(varsv, "::", 2);
360 sv_catpvn(varsv, name, len);
361 SvTAINTED_off(varsv);
366 gv_stashpv(name,create)
370 return gv_stashpvn(name, strlen(name), create);
374 gv_stashpvn(name,namelen,create)
384 if (namelen + 3 < sizeof smallbuf)
387 New(606, tmpbuf, namelen + 3, char);
388 Copy(name,tmpbuf,namelen,char);
389 tmpbuf[namelen++] = ':';
390 tmpbuf[namelen++] = ':';
391 tmpbuf[namelen] = '\0';
392 tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV);
393 if (tmpbuf != smallbuf)
398 GvHV(tmpgv) = newHV();
401 HvNAME(stash) = savepv(name);
406 gv_stashsv(sv,create)
413 return gv_stashpvn(ptr, len, create);
418 gv_fetchpv(nambeg,add,sv_type)
423 register char *name = nambeg;
427 register char *namend;
432 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
435 for (namend = name; *namend; namend++) {
436 if ((*namend == '\'' && namend[1]) ||
437 (*namend == ':' && namend[1] == ':'))
441 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
446 New(601, tmpbuf, len+3, char);
447 Copy(name, tmpbuf, len, char);
451 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
453 if (!gvp || *gvp == (GV*)&sv_undef)
457 if (SvTYPE(gv) == SVt_PVGV)
462 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
464 if (!(stash = GvHV(gv)))
465 stash = GvHV(gv) = newHV();
468 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
476 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
483 /* No stash in name, so see how we can default */
486 if (isIDFIRST(*name)) {
489 if (isUPPER(*name)) {
491 if (*name == 'S' && (
492 strEQ(name, "SIG") ||
493 strEQ(name, "STDIN") ||
494 strEQ(name, "STDOUT") ||
495 strEQ(name, "STDERR") ))
498 else if (*name > 'E') {
499 if (*name == 'I' && strEQ(name, "INC"))
502 else if (*name > 'A') {
503 if (*name == 'E' && strEQ(name, "ENV"))
506 else if (*name == 'A' && (
507 strEQ(name, "ARGV") ||
508 strEQ(name, "ARGVOUT") ))
511 else if (*name == '_' && !name[1])
516 else if ((COP*)curcop == &compiling) {
518 if (add && (hints & HINT_STRICT_VARS) &&
519 sv_type != SVt_PVCV &&
520 sv_type != SVt_PVGV &&
521 sv_type != SVt_PVFM &&
522 sv_type != SVt_PVIO &&
523 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
525 gvp = (GV**)hv_fetch(stash,name,len,0);
527 *gvp == (GV*)&sv_undef ||
528 SvTYPE(*gvp) != SVt_PVGV)
532 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
533 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
534 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
536 warn("Variable \"%c%s\" is not imported",
537 sv_type == SVt_PVAV ? '@' :
538 sv_type == SVt_PVHV ? '%' : '$',
541 warn("(Did you mean &%s instead?)\n", name);
547 stash = curcop->cop_stash;
553 /* By this point we should have a stash and a name */
557 warn("Global symbol \"%s\" requires explicit package name", name);
559 stash = curstash ? curstash : defstash; /* avoid core dumps */
560 add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV
561 : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV
562 : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV
569 if (!SvREFCNT(stash)) /* symbol table under destruction */
572 gvp = (GV**)hv_fetch(stash,name,len,add);
573 if (!gvp || *gvp == (GV*)&sv_undef)
576 if (SvTYPE(gv) == SVt_PVGV) {
579 gv_init_sv(gv, sv_type);
584 /* Adding a new symbol */
587 warn("Had to create %s unexpectedly", nambeg);
588 gv_init(gv, stash, name, len, add & 2);
589 gv_init_sv(gv, sv_type);
590 GvFLAGS(gv) |= add_gvflags;
592 /* set up magic where warranted */
595 if (strEQ(name, "ARGV")) {
596 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
606 if (strnEQ(name, "EXPORT", 6))
610 if (strEQ(name, "ISA")) {
613 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
614 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
617 av_push(av, newSVpv(pname = "NDBM_File",0));
618 gv_stashpvn(pname, 9, TRUE);
619 av_push(av, newSVpv(pname = "DB_File",0));
620 gv_stashpvn(pname, 7, TRUE);
621 av_push(av, newSVpv(pname = "GDBM_File",0));
622 gv_stashpvn(pname, 9, TRUE);
623 av_push(av, newSVpv(pname = "SDBM_File",0));
624 gv_stashpvn(pname, 9, TRUE);
625 av_push(av, newSVpv(pname = "ODBM_File",0));
626 gv_stashpvn(pname, 9, TRUE);
632 if (strEQ(name, "OVERLOAD")) {
635 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
638 #endif /* OVERLOAD */
640 if (strEQ(name, "SIG")) {
646 hv_magic(hv, siggv, 'S');
647 for(i=1;sig_name[i];i++) {
649 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
651 sv_setsv(*init,&sv_undef);
655 /* initialize signal stack */
656 signalstack = newAV();
657 AvREAL_off(signalstack);
658 av_extend(signalstack, 30);
659 av_fill(signalstack, 0);
687 sv_setpv(GvSV(gv),chopset);
693 #ifdef COMPLEX_STATUS
694 sv_upgrade(GvSV(gv), SVt_PVLV);
700 if (dowarn && len == 1 && sv_type == SVt_PV)
701 warn("Use of $%s is deprecated", name);
744 SvREADONLY_on(GvSV(gv));
746 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
752 sv_setpv(GvSV(gv),"\f");
758 sv_setpv(GvSV(gv),"\034");
763 sv_upgrade(sv, SVt_PVNV);
764 sv_setpv(sv, patchlevel);
774 gv_fullname3(sv, gv, prefix)
779 HV *hv = GvSTASH(gv);
784 sv_setpv(sv, prefix ? prefix : "");
785 sv_catpv(sv,HvNAME(hv));
786 sv_catpvn(sv,"::", 2);
787 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
791 gv_efullname3(sv, gv, prefix)
799 gv_fullname3(sv, egv, prefix);
802 /* XXX compatibility with versions <= 5.003. */
808 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
811 /* XXX compatibility with versions <= 5.003. */
817 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
826 io = (IO*)NEWSV(0,0);
827 sv_upgrade((SV *)io,SVt_PVIO);
830 iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV);
832 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
833 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
849 for (i = 0; i <= (I32) HvMAX(stash); i++) {
850 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
851 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
852 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
855 gv_check(hv); /* nested package */
857 else if (isALPHA(*HeKEY(entry))) {
858 gv = (GV*)HeVAL(entry);
861 curcop->cop_line = GvLINE(gv);
862 filegv = GvFILEGV(gv);
863 curcop->cop_filegv = filegv;
864 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
866 warn("Name \"%s::%s\" used only once: possible typo",
867 HvNAME(stash), GvNAME(gv));
877 return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)gensym++),
881 /* hopefully this is only called on local symbol table entries */
890 /* multi-named GPs cannot be used for method cache */
891 SvREFCNT_dec(gp->gp_cv);
896 /* Adding a new name to a subroutine invalidates method cache */
910 if (!gv || !(gp = GvGP(gv)))
912 if (gp->gp_refcnt == 0) {
913 warn("Attempt to free unreferenced glob pointers");
917 /* Deleting the name of a subroutine invalidates method cache */
920 if (--gp->gp_refcnt > 0) {
921 if (gp->gp_egv == gv)
926 SvREFCNT_dec(gp->gp_sv);
927 SvREFCNT_dec(gp->gp_av);
928 SvREFCNT_dec(gp->gp_hv);
929 SvREFCNT_dec(gp->gp_io);
930 SvREFCNT_dec(gp->gp_cv);
931 SvREFCNT_dec(gp->gp_form);
937 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
941 #ifdef MICROPORT /* Microport 2.4 hack */
946 return GvGP(gv)->gp_av;
948 return GvGP(gv_AVadd(gv))->gp_av;
955 return GvGP(gv)->gp_hv;
957 return GvGP(gv_HVadd(gv))->gp_hv;
959 #endif /* Microport 2.4 hack */
962 /* Updates and caches the CV's */
972 MAGIC* mg=mg_find((SV*)stash,'c');
973 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
976 if (mg && amtp->was_ok_am == amagic_generation
977 && amtp->was_ok_sub == sub_generation)
978 return AMT_AMAGIC(amtp);
979 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
981 for (i=1; i<NofAMmeth; i++) {
982 if (amtp->table[i]) {
983 SvREFCNT_dec(amtp->table[i]);
987 sv_unmagic((SV*)stash, 'c');
989 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
991 amt.was_ok_am = amagic_generation;
992 amt.was_ok_sub = sub_generation;
993 amt.fallback = AMGfallNO;
996 #ifdef OVERLOAD_VIA_HASH
997 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
998 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
1005 /* Work with "fallback" key, which we assume to be first in AMG_names */
1007 if (( cp = (char *)AMG_names[0] ) &&
1008 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
1009 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1010 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1012 for (i = 1; i < NofAMmeth; i++) {
1014 cp = (char *)AMG_names[i];
1016 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
1017 if (svp && ((sv = *svp) != &sv_undef)) {
1018 switch (SvTYPE(sv)) {
1021 if (!SvOK(sv)) break;
1022 gv = gv_fetchmethod(stash, SvPV(sv, na));
1023 if (gv) cv = GvCV(gv);
1027 if (SvTYPE(cv) == SVt_PVCV)
1032 croak("Not a subroutine reference in overload table");
1038 if (!(cv = GvCVu((GV*)sv)))
1039 cv = sv_2cv(sv, &stash, &gv, TRUE);
1044 croak("Method for operation %s not found in package %.256s during blessing\n",
1057 /* Work with "fallback" key, which we assume to be first in AMG_names */
1059 if ( cp = AMG_names[0] ) {
1060 /* Try to find via inheritance. */
1061 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1062 if (gv) sv = GvSV(gv);
1064 if (!gv) goto no_table;
1065 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1066 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1069 for (i = 1; i < NofAMmeth; i++) {
1070 SV *cookie = sv_2mortal(newSVpvf("(%s", cp = AMG_names[i]));
1071 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1072 cp, HvNAME(stash)) );
1073 /* don't fill the cache while looking up! */
1074 gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1);
1076 if(gv && (cv = GvCV(gv))) {
1077 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1078 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1079 /* GvSV contains the name of the method. */
1082 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1083 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1084 if (!SvPOK(GvSV(gv))
1085 || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)),
1088 /* Can be an import stub (created by `can'). */
1090 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1091 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1094 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1095 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1098 cv = GvCV(gv = ngv);
1100 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1101 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1102 GvNAME(CvGV(cv))) );
1106 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1109 AMT_AMAGIC_on(&amt);
1110 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1114 /* Here we have no table: */
1116 AMT_AMAGIC_off(&amt);
1117 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1121 /* During call to this subroutine stack can be reallocated. It is
1122 * advised to call SPAGAIN macro in your code after call */
1125 amagic_call(left,right,method,flags)
1133 CV **cvp=NULL, **ocvp=NULL;
1135 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1136 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1138 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1139 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1140 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1141 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1143 && ((cv = cvp[off=method+assignshift])
1144 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1146 (fl = 1, cv = cvp[off=method])))) {
1147 lr = -1; /* Call method for left argument */
1149 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1152 /* look for substituted methods */
1155 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1156 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1157 right = &sv_yes; lr = -1; assign = 1;
1161 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1162 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1163 right = &sv_yes; lr = -1; assign = 1;
1167 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1170 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1173 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1176 (void)((cv = cvp[off=bool__amg])
1177 || (cv = cvp[off=numer_amg])
1178 || (cv = cvp[off=string_amg]));
1184 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) {
1186 * Just to be extra cautious. Maybe in some
1187 * additional cases sv_setsv is safe, too.
1189 SV* newref = newSVsv(ref);
1190 SvOBJECT_on(newref);
1191 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1197 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1198 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1199 SV* nullsv=sv_2mortal(newSViv(0));
1201 SV* lessp = amagic_call(left,nullsv,
1202 lt_amg,AMGf_noright);
1203 logic = SvTRUE(lessp);
1205 SV* lessp = amagic_call(left,nullsv,
1206 ncmp_amg,AMGf_noright);
1207 logic = (SvNV(lessp) < 0);
1210 if (off==subtr_amg) {
1221 if (cv = cvp[off=subtr_amg]) {
1223 left = sv_2mortal(newSViv(0));
1230 if (!cv) goto not_found;
1231 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1232 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1233 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1234 ? (amtp = (AMT*)mg->mg_ptr)->table
1236 && (cv = cvp[off=method])) { /* Method for right
1239 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1240 && (cvp=ocvp) && (lr = -1))
1241 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1242 && !(flags & AMGf_unary)) {
1243 /* We look for substitution for
1244 * comparison operations and
1246 if (method==concat_amg || method==concat_ass_amg
1247 || method==repeat_amg || method==repeat_ass_amg) {
1248 return NULL; /* Delegate operation to string conversion */
1258 postpr = 1; off=ncmp_amg; break;
1265 postpr = 1; off=scmp_amg; break;
1267 if (off != -1) cv = cvp[off];
1272 not_found: /* No method found, either report or croak */
1273 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1274 notfound = 1; lr = -1;
1275 } else if (cvp && (cv=cvp[nomethod_amg])) {
1276 notfound = 1; lr = 1;
1279 if (off==-1) off=method;
1280 msg = sv_2mortal(newSVpvf(
1281 "Operation `%s': no method found,%sargument %s%s%s%s",
1282 AMG_names[method + assignshift],
1283 (flags & AMGf_unary ? " " : "\n\tleft "),
1285 "in overloaded package ":
1286 "has no overloaded magic",
1288 HvNAME(SvSTASH(SvRV(left))):
1291 ",\n\tright argument in overloaded package ":
1294 : ",\n\tright argument has no overloaded magic"),
1296 HvNAME(SvSTASH(SvRV(right))):
1298 if (amtp && amtp->fallback >= AMGfallYES) {
1299 DEBUG_o( deb("%s", SvPVX(msg)) );
1309 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n",
1311 method+assignshift==off? "" :
1313 method+assignshift==off? "" :
1314 AMG_names[method+assignshift],
1315 method+assignshift==off? "" : "')",
1316 flags & AMGf_unary? "" :
1317 lr==1 ? " for right argument": " for left argument",
1318 flags & AMGf_unary? " for argument" : "",
1320 fl? ",\n\tassignment variant used": "") );
1321 /* Since we use shallow copy during assignment, we need
1322 * to dublicate the contents, probably calling user-supplied
1323 * version of copy operator
1325 if ((method + assignshift==off
1326 && (assign || method==inc_amg || method==dec_amg))
1327 || inc_dec_ass) RvDEEPCP(left);
1333 bool oldcatch = CATCH_GET;
1336 Zero(&myop, 1, BINOP);
1337 myop.op_last = (OP *) &myop;
1338 myop.op_next = Nullop;
1339 myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
1344 if (PERLDB_SUB && curstash != debstash)
1345 op->op_private |= OPpENTERSUB_DB;
1349 EXTEND(sp, notfound + 5);
1350 PUSHs(lr>0? right: left);
1351 PUSHs(lr>0? left: right);
1352 PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no ));
1354 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1359 if (op = pp_entersub())
1366 CATCH_SET(oldcatch);
1373 ans=SvIV(res)<=0; break;
1376 ans=SvIV(res)<0; break;
1379 ans=SvIV(res)>=0; break;
1382 ans=SvIV(res)>0; break;
1385 ans=SvIV(res)==0; break;
1388 ans=SvIV(res)!=0; break;
1391 SvSetSV(left,res); return left;
1393 ans=!SvOK(res); break;
1396 } else if (method==copy_amg) {
1398 croak("Copy method did not return a reference");
1400 return SvREFCNT_inc(SvRV(res));
1406 #endif /* OVERLOAD */