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 and re-create @.*::SUPER::ISA on demand */
174 if (!av || !SvMAGIC(av)) {
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);
745 SvREADONLY_on(GvSV(gv));
747 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
753 sv_setpv(GvSV(gv),"\f");
759 sv_setpv(GvSV(gv),"\034");
764 sv_upgrade(sv, SVt_PVNV);
765 sv_setpv(sv, patchlevel);
775 gv_fullname3(sv, gv, prefix)
780 HV *hv = GvSTASH(gv);
785 sv_setpv(sv, prefix ? prefix : "");
786 sv_catpv(sv,HvNAME(hv));
787 sv_catpvn(sv,"::", 2);
788 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
792 gv_efullname3(sv, gv, prefix)
800 gv_fullname3(sv, egv, prefix);
803 /* XXX compatibility with versions <= 5.003. */
809 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
812 /* XXX compatibility with versions <= 5.003. */
818 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
827 io = (IO*)NEWSV(0,0);
828 sv_upgrade((SV *)io,SVt_PVIO);
831 iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV);
833 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
834 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
850 for (i = 0; i <= (I32) HvMAX(stash); i++) {
851 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
852 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
853 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
856 gv_check(hv); /* nested package */
858 else if (isALPHA(*HeKEY(entry))) {
859 gv = (GV*)HeVAL(entry);
862 curcop->cop_line = GvLINE(gv);
863 filegv = GvFILEGV(gv);
864 curcop->cop_filegv = filegv;
865 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
867 warn("Name \"%s::%s\" used only once: possible typo",
868 HvNAME(stash), GvNAME(gv));
878 return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)gensym++),
882 /* hopefully this is only called on local symbol table entries */
891 /* multi-named GPs cannot be used for method cache */
892 SvREFCNT_dec(gp->gp_cv);
897 /* Adding a new name to a subroutine invalidates method cache */
911 if (!gv || !(gp = GvGP(gv)))
913 if (gp->gp_refcnt == 0) {
914 warn("Attempt to free unreferenced glob pointers");
918 /* Deleting the name of a subroutine invalidates method cache */
921 if (--gp->gp_refcnt > 0) {
922 if (gp->gp_egv == gv)
927 SvREFCNT_dec(gp->gp_sv);
928 SvREFCNT_dec(gp->gp_av);
929 SvREFCNT_dec(gp->gp_hv);
930 SvREFCNT_dec(gp->gp_io);
931 SvREFCNT_dec(gp->gp_cv);
932 SvREFCNT_dec(gp->gp_form);
938 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
942 #ifdef MICROPORT /* Microport 2.4 hack */
947 return GvGP(gv)->gp_av;
949 return GvGP(gv_AVadd(gv))->gp_av;
956 return GvGP(gv)->gp_hv;
958 return GvGP(gv_HVadd(gv))->gp_hv;
960 #endif /* Microport 2.4 hack */
963 /* Updates and caches the CV's */
973 MAGIC* mg=mg_find((SV*)stash,'c');
974 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
977 if (mg && amtp->was_ok_am == amagic_generation
978 && amtp->was_ok_sub == sub_generation)
979 return AMT_AMAGIC(amtp);
980 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
982 for (i=1; i<NofAMmeth; i++) {
983 if (amtp->table[i]) {
984 SvREFCNT_dec(amtp->table[i]);
988 sv_unmagic((SV*)stash, 'c');
990 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
992 amt.was_ok_am = amagic_generation;
993 amt.was_ok_sub = sub_generation;
994 amt.fallback = AMGfallNO;
997 #ifdef OVERLOAD_VIA_HASH
998 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
999 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
1006 /* Work with "fallback" key, which we assume to be first in AMG_names */
1008 if (( cp = (char *)AMG_names[0] ) &&
1009 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
1010 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1011 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1013 for (i = 1; i < NofAMmeth; i++) {
1015 cp = (char *)AMG_names[i];
1017 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
1018 if (svp && ((sv = *svp) != &sv_undef)) {
1019 switch (SvTYPE(sv)) {
1022 if (!SvOK(sv)) break;
1023 gv = gv_fetchmethod(stash, SvPV(sv, na));
1024 if (gv) cv = GvCV(gv);
1028 if (SvTYPE(cv) == SVt_PVCV)
1033 croak("Not a subroutine reference in overload table");
1039 if (!(cv = GvCVu((GV*)sv)))
1040 cv = sv_2cv(sv, &stash, &gv, TRUE);
1045 croak("Method for operation %s not found in package %.256s during blessing\n",
1058 /* Work with "fallback" key, which we assume to be first in AMG_names */
1060 if ( cp = AMG_names[0] ) {
1061 /* Try to find via inheritance. */
1062 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1063 if (gv) sv = GvSV(gv);
1065 if (!gv) goto no_table;
1066 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1067 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1070 for (i = 1; i < NofAMmeth; i++) {
1071 SV *cookie = sv_2mortal(newSVpvf("(%s", cp = AMG_names[i]));
1072 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1073 cp, HvNAME(stash)) );
1074 /* don't fill the cache while looking up! */
1075 gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1);
1077 if(gv && (cv = GvCV(gv))) {
1078 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1079 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1080 /* GvSV contains the name of the method. */
1083 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1084 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1085 if (!SvPOK(GvSV(gv))
1086 || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)),
1089 /* Can be an import stub (created by `can'). */
1091 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1092 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1095 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1096 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1099 cv = GvCV(gv = ngv);
1101 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1102 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1103 GvNAME(CvGV(cv))) );
1107 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1110 AMT_AMAGIC_on(&amt);
1111 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1115 /* Here we have no table: */
1117 AMT_AMAGIC_off(&amt);
1118 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1122 /* During call to this subroutine stack can be reallocated. It is
1123 * advised to call SPAGAIN macro in your code after call */
1126 amagic_call(left,right,method,flags)
1134 CV **cvp=NULL, **ocvp=NULL;
1136 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1137 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1139 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1140 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1141 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1142 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1144 && ((cv = cvp[off=method+assignshift])
1145 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1147 (fl = 1, cv = cvp[off=method])))) {
1148 lr = -1; /* Call method for left argument */
1150 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1153 /* look for substituted methods */
1156 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1157 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1158 right = &sv_yes; lr = -1; assign = 1;
1162 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1163 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1164 right = &sv_yes; lr = -1; assign = 1;
1168 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1171 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1174 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1177 (void)((cv = cvp[off=bool__amg])
1178 || (cv = cvp[off=numer_amg])
1179 || (cv = cvp[off=string_amg]));
1185 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) {
1187 * Just to be extra cautious. Maybe in some
1188 * additional cases sv_setsv is safe, too.
1190 SV* newref = newSVsv(ref);
1191 SvOBJECT_on(newref);
1192 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1198 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1199 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1200 SV* nullsv=sv_2mortal(newSViv(0));
1202 SV* lessp = amagic_call(left,nullsv,
1203 lt_amg,AMGf_noright);
1204 logic = SvTRUE(lessp);
1206 SV* lessp = amagic_call(left,nullsv,
1207 ncmp_amg,AMGf_noright);
1208 logic = (SvNV(lessp) < 0);
1211 if (off==subtr_amg) {
1222 if (cv = cvp[off=subtr_amg]) {
1224 left = sv_2mortal(newSViv(0));
1231 if (!cv) goto not_found;
1232 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1233 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1234 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1235 ? (amtp = (AMT*)mg->mg_ptr)->table
1237 && (cv = cvp[off=method])) { /* Method for right
1240 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1241 && (cvp=ocvp) && (lr = -1))
1242 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1243 && !(flags & AMGf_unary)) {
1244 /* We look for substitution for
1245 * comparison operations and
1247 if (method==concat_amg || method==concat_ass_amg
1248 || method==repeat_amg || method==repeat_ass_amg) {
1249 return NULL; /* Delegate operation to string conversion */
1259 postpr = 1; off=ncmp_amg; break;
1266 postpr = 1; off=scmp_amg; break;
1268 if (off != -1) cv = cvp[off];
1273 not_found: /* No method found, either report or croak */
1274 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1275 notfound = 1; lr = -1;
1276 } else if (cvp && (cv=cvp[nomethod_amg])) {
1277 notfound = 1; lr = 1;
1280 if (off==-1) off=method;
1281 msg = sv_2mortal(newSVpvf(
1282 "Operation `%s': no method found,%sargument %s%s%s%s",
1283 AMG_names[method + assignshift],
1284 (flags & AMGf_unary ? " " : "\n\tleft "),
1286 "in overloaded package ":
1287 "has no overloaded magic",
1289 HvNAME(SvSTASH(SvRV(left))):
1292 ",\n\tright argument in overloaded package ":
1295 : ",\n\tright argument has no overloaded magic"),
1297 HvNAME(SvSTASH(SvRV(right))):
1299 if (amtp && amtp->fallback >= AMGfallYES) {
1300 DEBUG_o( deb("%s", SvPVX(msg)) );
1310 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n",
1312 method+assignshift==off? "" :
1314 method+assignshift==off? "" :
1315 AMG_names[method+assignshift],
1316 method+assignshift==off? "" : "')",
1317 flags & AMGf_unary? "" :
1318 lr==1 ? " for right argument": " for left argument",
1319 flags & AMGf_unary? " for argument" : "",
1321 fl? ",\n\tassignment variant used": "") );
1322 /* Since we use shallow copy during assignment, we need
1323 * to dublicate the contents, probably calling user-supplied
1324 * version of copy operator
1326 if ((method + assignshift==off
1327 && (assign || method==inc_amg || method==dec_amg))
1328 || inc_dec_ass) RvDEEPCP(left);
1334 bool oldcatch = CATCH_GET;
1337 Zero(&myop, 1, BINOP);
1338 myop.op_last = (OP *) &myop;
1339 myop.op_next = Nullop;
1340 myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
1345 if (PERLDB_SUB && curstash != debstash)
1346 op->op_private |= OPpENTERSUB_DB;
1350 EXTEND(sp, notfound + 5);
1351 PUSHs(lr>0? right: left);
1352 PUSHs(lr>0? left: right);
1353 PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no ));
1355 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1360 if (op = pp_entersub())
1367 CATCH_SET(oldcatch);
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 ans=SvIV(res)==0; break;
1389 ans=SvIV(res)!=0; break;
1392 SvSetSV(left,res); return left;
1394 ans=!SvOK(res); break;
1397 } else if (method==copy_amg) {
1399 croak("Copy method did not return a reference");
1401 return SvREFCNT_inc(SvRV(res));
1407 #endif /* OVERLOAD */