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)) {
215 /* Use topgv for cache only if it has no synonyms */
216 if (topgv && GvREFCNT(topgv) == 1) {
217 if (cv = GvCV(topgv))
219 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
220 GvCVGEN(topgv) = sub_generation;
231 gv_fetchmethod(stash, name)
239 for (nend = name; *nend; nend++) {
242 else if (*nend == ':' && *(nend + 1) == ':')
246 char *origname = name;
250 if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
251 /* ->SUPER::method should really be looked up in original stash */
252 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash), 0));
253 sv_catpvn(tmpstr, "::SUPER", 7);
254 stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
255 DEBUG_o( deb("Treating %s as %s::%s\n",
256 origname, HvNAME(stash), name) );
259 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
262 gv = gv_fetchmeth(stash, name, nend - name, 0);
264 if (strEQ(name,"import"))
267 gv = gv_autoload(stash, name, nend - name);
274 gv_autoload(stash, name, len)
279 static char autoload[] = "AUTOLOAD";
280 static STRLEN autolen = 8;
287 if (len == autolen && strnEQ(name, autoload, autolen))
289 if (!(gv = gv_fetchmeth(stash, autoload, autolen, 0)))
294 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
295 * The subroutine's original name may not be "AUTOLOAD", so we don't
296 * use that, but for lack of anything better we will use the sub's
297 * original package to look up $AUTOLOAD.
299 varstash = GvSTASH(CvGV(cv));
300 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
302 gv_init(vargv, varstash, autoload, autolen, FALSE);
304 sv_setpv(varsv, HvNAME(stash));
305 sv_catpvn(varsv, "::", 2);
306 sv_catpvn(varsv, name, len);
307 SvTAINTED_off(varsv);
312 gv_stashpv(name,create)
316 return gv_stashpvn(name, strlen(name), create);
320 gv_stashpvn(name,namelen,create)
329 if (namelen > 1200) {
332 warn("Weird package name \"%s\" truncated", name);
334 warn("Weird package name \"%.*s...\" truncated", (int)namelen, name);
337 Copy(name,tmpbuf,namelen,char);
338 tmpbuf[namelen++] = ':';
339 tmpbuf[namelen++] = ':';
340 tmpbuf[namelen] = '\0';
341 tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV);
345 GvHV(tmpgv) = newHV();
348 HvNAME(stash) = savepv(name);
353 gv_stashsv(sv,create)
360 return gv_stashpvn(ptr, len, create);
365 gv_fetchpv(nambeg,add,sv_type)
370 register char *name = nambeg;
374 register char *namend;
379 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
382 for (namend = name; *namend; namend++) {
383 if ((*namend == '\'' && namend[1]) ||
384 (*namend == ':' && namend[1] == ':'))
388 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
393 New(601, tmpbuf, len+3, char);
394 Copy(name, tmpbuf, len, char);
398 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
400 if (!gvp || *gvp == (GV*)&sv_undef)
404 if (SvTYPE(gv) == SVt_PVGV)
409 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
411 if (!(stash = GvHV(gv)))
412 stash = GvHV(gv) = newHV();
415 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
423 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
430 /* No stash in name, so see how we can default */
433 if (isIDFIRST(*name)) {
436 if (isUPPER(*name)) {
438 if (*name == 'S' && (
439 strEQ(name, "SIG") ||
440 strEQ(name, "STDIN") ||
441 strEQ(name, "STDOUT") ||
442 strEQ(name, "STDERR") ))
445 else if (*name > 'E') {
446 if (*name == 'I' && strEQ(name, "INC"))
449 else if (*name > 'A') {
450 if (*name == 'E' && strEQ(name, "ENV"))
453 else if (*name == 'A' && (
454 strEQ(name, "ARGV") ||
455 strEQ(name, "ARGVOUT") ))
458 else if (*name == '_' && !name[1])
463 else if ((COP*)curcop == &compiling) {
465 if (add && (hints & HINT_STRICT_VARS) &&
466 sv_type != SVt_PVCV &&
467 sv_type != SVt_PVGV &&
468 sv_type != SVt_PVFM &&
469 sv_type != SVt_PVIO &&
470 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
472 gvp = (GV**)hv_fetch(stash,name,len,0);
474 *gvp == (GV*)&sv_undef ||
475 SvTYPE(*gvp) != SVt_PVGV)
479 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
480 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
481 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
483 warn("Variable \"%c%s\" is not imported",
484 sv_type == SVt_PVAV ? '@' :
485 sv_type == SVt_PVHV ? '%' : '$',
488 warn("(Did you mean &%s instead?)\n", name);
494 stash = curcop->cop_stash;
500 /* By this point we should have a stash and a name */
504 warn("Global symbol \"%s\" requires explicit package name", name);
506 stash = curstash ? curstash : defstash; /* avoid core dumps */
507 add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV
508 : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV
509 : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV
516 if (!SvREFCNT(stash)) /* symbol table under destruction */
519 gvp = (GV**)hv_fetch(stash,name,len,add);
520 if (!gvp || *gvp == (GV*)&sv_undef)
523 if (SvTYPE(gv) == SVt_PVGV) {
526 gv_init_sv(gv, sv_type);
531 /* Adding a new symbol */
534 warn("Had to create %s unexpectedly", nambeg);
535 gv_init(gv, stash, name, len, add & 2);
536 gv_init_sv(gv, sv_type);
537 GvFLAGS(gv) |= add_gvflags;
539 /* set up magic where warranted */
542 if (strEQ(name, "ARGV")) {
543 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
553 if (strnEQ(name, "EXPORT", 6))
557 if (strEQ(name, "ISA")) {
560 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
561 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
564 av_push(av, newSVpv(pname = "NDBM_File",0));
565 gv_stashpvn(pname, 9, TRUE);
566 av_push(av, newSVpv(pname = "DB_File",0));
567 gv_stashpvn(pname, 7, TRUE);
568 av_push(av, newSVpv(pname = "GDBM_File",0));
569 gv_stashpvn(pname, 9, TRUE);
570 av_push(av, newSVpv(pname = "SDBM_File",0));
571 gv_stashpvn(pname, 9, TRUE);
572 av_push(av, newSVpv(pname = "ODBM_File",0));
573 gv_stashpvn(pname, 9, TRUE);
579 if (strEQ(name, "OVERLOAD")) {
582 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
585 #endif /* OVERLOAD */
587 if (strEQ(name, "SIG")) {
593 hv_magic(hv, siggv, 'S');
594 for(i=1;sig_name[i];i++) {
596 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
598 sv_setsv(*init,&sv_undef);
602 /* initialize signal stack */
603 signalstack = newAV();
604 AvREAL_off(signalstack);
605 av_extend(signalstack, 30);
606 av_fill(signalstack, 0);
634 sv_setpv(GvSV(gv),chopset);
640 #ifdef COMPLEX_STATUS
641 sv_upgrade(GvSV(gv), SVt_PVLV);
647 if (dowarn && len == 1 && sv_type == SVt_PV)
648 warn("Use of $%s is deprecated", name);
691 SvREADONLY_on(GvSV(gv));
693 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
699 sv_setpv(GvSV(gv),"\f");
705 sv_setpv(GvSV(gv),"\034");
710 sv_upgrade(sv, SVt_PVNV);
711 sv_setpv(sv, patchlevel);
721 gv_fullname3(sv, gv, prefix)
726 HV *hv = GvSTASH(gv);
731 sv_setpv(sv, prefix ? prefix : "");
732 sv_catpv(sv,HvNAME(hv));
733 sv_catpvn(sv,"::", 2);
734 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
738 gv_efullname3(sv, gv, prefix)
746 gv_fullname3(sv, egv, prefix);
749 /* XXX compatibility with versions <= 5.003. */
755 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
758 /* XXX compatibility with versions <= 5.003. */
764 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
773 io = (IO*)NEWSV(0,0);
774 sv_upgrade((SV *)io,SVt_PVIO);
777 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
778 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
794 for (i = 0; i <= (I32) HvMAX(stash); i++) {
795 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
796 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
797 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
800 gv_check(hv); /* nested package */
802 else if (isALPHA(*HeKEY(entry))) {
803 gv = (GV*)HeVAL(entry);
806 curcop->cop_line = GvLINE(gv);
807 filegv = GvFILEGV(gv);
808 curcop->cop_filegv = filegv;
809 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
811 warn("Name \"%s::%s\" used only once: possible typo",
812 HvNAME(stash), GvNAME(gv));
822 (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
823 return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
826 /* hopefully this is only called on local symbol table entries */
835 /* multi-named GPs cannot be used for method cache */
836 SvREFCNT_dec(gp->gp_cv);
841 /* Adding a new name to a subroutine invalidates method cache */
855 if (!gv || !(gp = GvGP(gv)))
857 if (gp->gp_refcnt == 0) {
858 warn("Attempt to free unreferenced glob pointers");
862 /* Deleting the name of a subroutine invalidates method cache */
865 if (--gp->gp_refcnt > 0) {
866 if (gp->gp_egv == gv)
871 SvREFCNT_dec(gp->gp_sv);
872 SvREFCNT_dec(gp->gp_av);
873 SvREFCNT_dec(gp->gp_hv);
874 SvREFCNT_dec(gp->gp_io);
875 SvREFCNT_dec(gp->gp_cv);
876 SvREFCNT_dec(gp->gp_form);
882 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
886 #ifdef MICROPORT /* Microport 2.4 hack */
891 return GvGP(gv)->gp_av;
893 return GvGP(gv_AVadd(gv))->gp_av;
900 return GvGP(gv)->gp_hv;
902 return GvGP(gv_HVadd(gv))->gp_hv;
904 #endif /* Microport 2.4 hack */
907 /* Updates and caches the CV's */
917 MAGIC* mg=mg_find((SV*)stash,'c');
918 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
921 if (mg && amtp->was_ok_am == amagic_generation
922 && amtp->was_ok_sub == sub_generation)
923 return AMT_AMAGIC(amtp);
924 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
926 for (i=1; i<NofAMmeth; i++) {
927 if (amtp->table[i]) {
928 SvREFCNT_dec(amtp->table[i]);
932 sv_unmagic((SV*)stash, 'c');
934 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
936 amt.was_ok_am = amagic_generation;
937 amt.was_ok_sub = sub_generation;
938 amt.fallback = AMGfallNO;
941 #ifdef OVERLOAD_VIA_HASH
942 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
943 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
950 /* Work with "fallback" key, which we assume to be first in AMG_names */
952 if (( cp = (char *)AMG_names[0] ) &&
953 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
954 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
955 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
957 for (i = 1; i < NofAMmeth; i++) {
959 cp = (char *)AMG_names[i];
961 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
962 if (svp && ((sv = *svp) != &sv_undef)) {
963 switch (SvTYPE(sv)) {
966 if (!SvOK(sv)) break;
967 gv = gv_fetchmethod(stash, SvPV(sv, na));
968 if (gv) cv = GvCV(gv);
972 if (SvTYPE(cv) == SVt_PVCV)
977 croak("Not a subroutine reference in overload table");
983 if (!(cv = GvCVu((GV*)sv)))
984 cv = sv_2cv(sv, &stash, &gv, TRUE);
989 croak("Method for operation %s not found in package %.256s during blessing\n",
1002 /* Work with "fallback" key, which we assume to be first in AMG_names */
1004 if ( cp = AMG_names[0] ) {
1005 /* Try to find via inheritance. */
1006 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1007 if (gv) sv = GvSV(gv);
1009 if (!gv) goto no_table;
1010 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1011 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1014 for (i = 1; i < NofAMmeth; i++) {
1018 *buf = '('; /* A cookie: "(". */
1019 strcpy(buf + 1, cp);
1020 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1021 cp, HvNAME(stash)) );
1022 gv = gv_fetchmeth(stash, buf, strlen(buf), -1); /* no filling stash! */
1023 if(gv && (cv = GvCV(gv))) {
1025 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1026 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1027 /* GvSV contains the name of the method. */
1030 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1031 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1033 && (ngv = gv_fetchmethod(stash, SvPVX(GvSV(gv))))) {
1034 name = SvPVX(GvSV(gv));
1035 cv = GvCV(gv = ngv);
1037 /* Can be an import stub (created by `can'). */
1039 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1040 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1043 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1044 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1047 /* If the sub is only a stub then we may have a gv to AUTOLOAD */
1048 gv = (GV*)*hv_fetch(GvSTASH(gv), name, strlen(name), TRUE);
1051 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1052 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1053 GvNAME(CvGV(cv))) );
1057 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1060 AMT_AMAGIC_on(&amt);
1061 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1065 /* Here we have no table: */
1067 AMT_AMAGIC_off(&amt);
1068 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1072 /* During call to this subroutine stack can be reallocated. It is
1073 * advised to call SPAGAIN macro in your code after call */
1076 amagic_call(left,right,method,flags)
1084 CV **cvp=NULL, **ocvp=NULL;
1086 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1087 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1089 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1090 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1091 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1092 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1094 && ((cv = cvp[off=method+assignshift])
1095 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1097 (fl = 1, cv = cvp[off=method])))) {
1098 lr = -1; /* Call method for left argument */
1100 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1103 /* look for substituted methods */
1106 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1107 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1108 right = &sv_yes; lr = -1; assign = 1;
1112 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1113 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1114 right = &sv_yes; lr = -1; assign = 1;
1118 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1121 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1124 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1127 (void)((cv = cvp[off=bool__amg])
1128 || (cv = cvp[off=numer_amg])
1129 || (cv = cvp[off=string_amg]));
1135 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
1142 SV* newref = newSVsv(ref);
1143 SvOBJECT_on(newref);
1144 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1150 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1151 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1152 SV* nullsv=sv_2mortal(newSViv(0));
1154 SV* lessp = amagic_call(left,nullsv,
1155 lt_amg,AMGf_noright);
1156 logic = SvTRUE(lessp);
1158 SV* lessp = amagic_call(left,nullsv,
1159 ncmp_amg,AMGf_noright);
1160 logic = (SvNV(lessp) < 0);
1163 if (off==subtr_amg) {
1174 if (cv = cvp[off=subtr_amg]) {
1176 left = sv_2mortal(newSViv(0));
1183 if (!cv) goto not_found;
1184 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1185 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1186 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1187 ? (amtp = (AMT*)mg->mg_ptr)->table
1189 && (cv = cvp[off=method])) { /* Method for right
1192 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1193 && (cvp=ocvp) && (lr = -1))
1194 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1195 && !(flags & AMGf_unary)) {
1196 /* We look for substitution for
1197 * comparison operations and
1199 if (method==concat_amg || method==concat_ass_amg
1200 || method==repeat_amg || method==repeat_ass_amg) {
1201 return NULL; /* Delegate operation to string conversion */
1211 postpr = 1; off=ncmp_amg; break;
1218 postpr = 1; off=scmp_amg; break;
1220 if (off != -1) cv = cvp[off];
1225 not_found: /* No method found, either report or croak */
1226 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1227 notfound = 1; lr = -1;
1228 } else if (cvp && (cv=cvp[nomethod_amg])) {
1229 notfound = 1; lr = 1;
1231 if (off==-1) off=method;
1233 "Operation `%s': no method found,%sargument %s%.256s%s%.256s",
1234 AMG_names[method + assignshift],
1235 (flags & AMGf_unary ? " " : "\n\tleft "),
1237 "in overloaded package ":
1238 "has no overloaded magic",
1240 HvNAME(SvSTASH(SvRV(left))):
1243 ",\n\tright argument in overloaded package ":
1246 : ",\n\tright argument has no overloaded magic"),
1248 HvNAME(SvSTASH(SvRV(right))):
1250 if (amtp && amtp->fallback >= AMGfallYES) {
1251 DEBUG_o( deb(buf) );
1261 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n",
1263 method+assignshift==off? "" :
1265 method+assignshift==off? "" :
1266 AMG_names[method+assignshift],
1267 method+assignshift==off? "" : "')",
1268 flags & AMGf_unary? "" :
1269 lr==1 ? " for right argument": " for left argument",
1270 flags & AMGf_unary? " for argument" : "",
1272 fl? ",\n\tassignment variant used": "") );
1273 /* Since we use shallow copy during assignment, we need
1274 * to dublicate the contents, probably calling user-supplied
1275 * version of copy operator
1277 if ((method + assignshift==off
1278 && (assign || method==inc_amg || method==dec_amg))
1279 || inc_dec_ass) RvDEEPCP(left);
1285 bool oldmustcatch = mustcatch;
1287 Zero(&myop, 1, BINOP);
1288 myop.op_last = (OP *) &myop;
1289 myop.op_next = Nullop;
1290 myop.op_flags = OPf_KNOW|OPf_STACKED;
1296 if (perldb && curstash != debstash)
1297 op->op_private |= OPpENTERSUB_DB;
1301 EXTEND(sp, notfound + 5);
1302 PUSHs(lr>0? right: left);
1303 PUSHs(lr>0? left: right);
1304 PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no));
1306 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1311 if (op = pp_entersub())
1318 mustcatch = oldmustcatch;
1325 ans=SvIV(res)<=0; break;
1328 ans=SvIV(res)<0; break;
1331 ans=SvIV(res)>=0; break;
1334 ans=SvIV(res)>0; break;
1337 ans=SvIV(res)==0; break;
1340 ans=SvIV(res)!=0; break;
1343 SvSetSV(left,res); return left;
1345 ans=!SvOK(res); break;
1347 return ans? &sv_yes: &sv_no;
1348 } else if (method==copy_amg) {
1350 croak("Copy method did not return a reference");
1352 return SvREFCNT_inc(SvRV(res));
1358 #endif /* OVERLOAD */