3 * Copyright (c) 1991-1994, 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)
139 if ((level > 100) || (level < -100))
140 croak("Recursive inheritance detected");
142 DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) );
144 gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
149 if (SvTYPE(topgv) != SVt_PVGV)
150 gv_init(topgv, stash, name, len, TRUE);
151 if (cv = GvCV(topgv)) {
152 /* If genuine method or valid cache entry, use it */
153 if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation)
155 /* Stale cached entry: junk it */
157 GvCV(topgv) = cv = Nullcv;
162 gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
163 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
164 SV** svp = AvARRAY(av);
165 I32 items = AvFILL(av) + 1;
168 HV* basestash = gv_stashsv(sv, FALSE);
171 warn("Can't locate package %s for @%s::ISA",
172 SvPVX(sv), HvNAME(stash));
175 gv = gv_fetchmeth(basestash, name, len,
176 (level >= 0) ? level + 1 : level - 1);
182 if (level == 0 || level == -1) {
183 if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) {
184 if (gv = gv_fetchmeth(lastchance, name, len,
185 (level >= 0) ? level + 1 : level - 1)) {
187 /* Use topgv for cache only if it has no synonyms */
188 if (topgv && GvREFCNT(topgv) == 1) {
189 if (cv = GvCV(topgv))
191 GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
192 GvCVGEN(topgv) = sub_generation;
203 gv_fetchmethod(stash, name)
211 for (nend = name; *nend; nend++) {
212 if (*nend == ':' || *nend == '\'')
217 char *origname = name;
223 if (strEQ(origname,"SUPER")) {
224 /* Degenerate case ->SUPER::method should really lookup in original stash */
225 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0));
226 sv_catpvn(tmpstr, "::SUPER", 7);
227 stash = gv_stashpvn(SvPVX(tmpstr),SvCUR(tmpstr),TRUE);
229 DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) );
231 stash = gv_stashpvn(origname, nsplit - origname, TRUE);
235 gv = gv_fetchmeth(stash, name, nend - name, 0);
238 /* Failed obvious case - look for SUPER as last element of stash's name */
239 char *packname = HvNAME(stash);
240 STRLEN len = strlen(packname);
241 if (len >= 7 && strEQ(packname+len-7,"::SUPER")) {
242 /* Now look for @.*::SUPER::ISA */
243 GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
245 if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) {
246 /* No @ISA in package ending in ::SUPER - drop suffix
247 and see if there is an @ISA there
250 char ch = packname[len];
252 packname[len] = '\0';
253 basestash = gv_stashpvn(packname, len, TRUE);
255 gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE);
256 if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
257 /* Okay found @ISA after dropping the SUPER, alias it */
258 SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
259 sv_catpvn(tmpstr, "::ISA", 5);
260 gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV);
262 GvAV(gv) = (AV*)SvREFCNT_inc(av);
263 /* ... and re-try lookup */
264 gv = gv_fetchmeth(stash, name, nend - name, 0);
266 croak("Cannot create %s::ISA",HvNAME(stash));
274 if (strEQ(name,"import"))
277 gv = gv_autoload(stash, name, nend - name);
284 gv_autoload(stash, name, len)
289 static char autoload[] = "AUTOLOAD";
290 static STRLEN autolen = 8;
297 if (len == autolen && strnEQ(name, autoload, autolen))
299 if (!(gv = gv_fetchmeth(stash, autoload, autolen, 0)))
304 * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
305 * The subroutine's original name may not be "AUTOLOAD", so we don't
306 * use that, but for lack of anything better we will use the sub's
307 * original package to look up $AUTOLOAD.
309 varstash = GvSTASH(CvGV(cv));
310 vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
312 gv_init(vargv, varstash, autoload, autolen, FALSE);
314 sv_setpv(varsv, HvNAME(stash));
315 sv_catpvn(varsv, "::", 2);
316 sv_catpvn(varsv, name, len);
317 SvTAINTED_off(varsv);
322 gv_stashpv(name,create)
326 return gv_stashpvn(name, strlen(name), create);
330 gv_stashpvn(name,namelen,create)
339 if (namelen > 1200) {
342 warn("Weird package name \"%s\" truncated", name);
344 warn("Weird package name \"%.*s...\" truncated", namelen, name);
347 Copy(name,tmpbuf,namelen,char);
348 tmpbuf[namelen++] = ':';
349 tmpbuf[namelen++] = ':';
350 tmpbuf[namelen] = '\0';
351 tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV);
355 GvHV(tmpgv) = newHV();
358 HvNAME(stash) = savepv(name);
363 gv_stashsv(sv,create)
370 return gv_stashpvn(ptr, len, create);
375 gv_fetchpv(nambeg,add,sv_type)
380 register char *name = nambeg;
384 register char *namend;
389 if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
392 for (namend = name; *namend; namend++) {
393 if ((*namend == '\'' && namend[1]) ||
394 (*namend == ':' && namend[1] == ':'))
398 if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
403 New(601, tmpbuf, len+3, char);
404 Copy(name, tmpbuf, len, char);
408 gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
410 if (!gvp || *gvp == (GV*)&sv_undef)
414 if (SvTYPE(gv) == SVt_PVGV)
419 gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
421 if (!(stash = GvHV(gv)))
422 stash = GvHV(gv) = newHV();
425 HvNAME(stash) = savepvn(nambeg, namend - nambeg);
433 return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
440 /* No stash in name, so see how we can default */
443 if (isIDFIRST(*name)) {
444 if (isUPPER(*name)) {
446 if (*name == 'S' && (
447 strEQ(name, "SIG") ||
448 strEQ(name, "STDIN") ||
449 strEQ(name, "STDOUT") ||
450 strEQ(name, "STDERR") ))
453 else if (*name > 'E') {
454 if (*name == 'I' && strEQ(name, "INC"))
457 else if (*name > 'A') {
458 if (*name == 'E' && strEQ(name, "ENV"))
461 else if (*name == 'A' && (
462 strEQ(name, "ARGV") ||
463 strEQ(name, "ARGVOUT") ))
466 else if (*name == '_' && !name[1])
470 else if ((COP*)curcop == &compiling) {
472 if (add && (hints & HINT_STRICT_VARS) &&
473 sv_type != SVt_PVCV &&
474 sv_type != SVt_PVGV &&
475 sv_type != SVt_PVFM &&
476 sv_type != SVt_PVIO &&
477 !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) )
479 gvp = (GV**)hv_fetch(stash,name,len,0);
481 *gvp == (GV*)&sv_undef ||
482 SvTYPE(*gvp) != SVt_PVGV)
486 else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
487 sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
488 sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
490 warn("Variable \"%c%s\" is not imported",
491 sv_type == SVt_PVAV ? '@' :
492 sv_type == SVt_PVHV ? '%' : '$',
495 warn("(Did you mean &%s instead?)\n", name);
501 stash = curcop->cop_stash;
507 /* By this point we should have a stash and a name */
511 warn("Global symbol \"%s\" requires explicit package name", name);
513 stash = curstash ? curstash : defstash; /* avoid core dumps */
519 if (!SvREFCNT(stash)) /* symbol table under destruction */
522 gvp = (GV**)hv_fetch(stash,name,len,add);
523 if (!gvp || *gvp == (GV*)&sv_undef)
526 if (SvTYPE(gv) == SVt_PVGV) {
529 gv_init_sv(gv, sv_type);
534 /* Adding a new symbol */
537 warn("Had to create %s unexpectedly", nambeg);
538 gv_init(gv, stash, name, len, add & 2);
539 gv_init_sv(gv, sv_type);
541 /* set up magic where warranted */
544 if (strEQ(name, "ARGV")) {
545 IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
555 if (strnEQ(name, "EXPORT", 6))
559 if (strEQ(name, "ISA")) {
562 sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
563 if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
566 av_push(av, newSVpv(pname = "NDBM_File",0));
567 gv_stashpvn(pname, 9, TRUE);
568 av_push(av, newSVpv(pname = "DB_File",0));
569 gv_stashpvn(pname, 7, TRUE);
570 av_push(av, newSVpv(pname = "GDBM_File",0));
571 gv_stashpvn(pname, 9, TRUE);
572 av_push(av, newSVpv(pname = "SDBM_File",0));
573 gv_stashpvn(pname, 9, TRUE);
574 av_push(av, newSVpv(pname = "ODBM_File",0));
575 gv_stashpvn(pname, 9, TRUE);
581 if (strEQ(name, "OVERLOAD")) {
584 sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
587 #endif /* OVERLOAD */
589 if (strEQ(name, "SIG")) {
595 hv_magic(hv, siggv, 'S');
596 for(i=1;sig_name[i];i++) {
598 init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
600 sv_setsv(*init,&sv_undef);
604 /* initialize signal stack */
605 signalstack = newAV();
606 AvREAL_off(signalstack);
607 av_extend(signalstack, 30);
608 av_fill(signalstack, 0);
636 sv_setpv(GvSV(gv),chopset);
641 if (dowarn && len == 1 && sv_type == SVt_PV)
642 warn("Use of $%s is deprecated", name);
687 SvREADONLY_on(GvSV(gv));
689 sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
695 sv_setpv(GvSV(gv),"\f");
701 sv_setpv(GvSV(gv),"\034");
706 sv_upgrade(sv, SVt_PVNV);
707 sv_setpv(sv, patchlevel);
717 gv_fullname3(sv, gv, prefix)
722 HV *hv = GvSTASH(gv);
727 sv_setpv(sv, prefix ? prefix : "");
728 sv_catpv(sv,HvNAME(hv));
729 sv_catpvn(sv,"::", 2);
730 sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
734 gv_efullname3(sv, gv, prefix)
742 gv_fullname3(sv, egv, prefix);
745 /* XXX compatibility with versions <= 5.003. */
751 gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
754 /* XXX compatibility with versions <= 5.003. */
760 gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
769 io = (IO*)NEWSV(0,0);
770 sv_upgrade((SV *)io,SVt_PVIO);
773 iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
774 SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
790 for (i = 0; i <= (I32) HvMAX(stash); i++) {
791 for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
792 if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
793 (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
796 gv_check(hv); /* nested package */
798 else if (isALPHA(*HeKEY(entry))) {
799 gv = (GV*)HeVAL(entry);
802 curcop->cop_line = GvLINE(gv);
803 filegv = GvFILEGV(gv);
804 curcop->cop_filegv = filegv;
805 if (filegv && GvMULTI(filegv)) /* Filename began with slash */
807 warn("Name \"%s::%s\" used only once: possible typo",
808 HvNAME(stash), GvNAME(gv));
818 (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
819 return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
822 /* hopefully this is only called on local symbol table entries */
831 /* multi-named GPs cannot be used for method cache */
832 SvREFCNT_dec(gp->gp_cv);
837 /* Adding a new name to a subroutine invalidates method cache */
851 if (!gv || !(gp = GvGP(gv)))
853 if (gp->gp_refcnt == 0) {
854 warn("Attempt to free unreferenced glob pointers");
858 /* Deleting the name of a subroutine invalidates method cache */
861 if (--gp->gp_refcnt > 0) {
862 if (gp->gp_egv == gv)
867 SvREFCNT_dec(gp->gp_sv);
868 SvREFCNT_dec(gp->gp_av);
869 SvREFCNT_dec(gp->gp_hv);
870 SvREFCNT_dec(gp->gp_io);
871 SvREFCNT_dec(gp->gp_cv);
872 SvREFCNT_dec(gp->gp_form);
878 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
882 #ifdef MICROPORT /* Microport 2.4 hack */
887 return GvGP(gv)->gp_av;
889 return GvGP(gv_AVadd(gv))->gp_av;
896 return GvGP(gv)->gp_hv;
898 return GvGP(gv_HVadd(gv))->gp_hv;
900 #endif /* Microport 2.4 hack */
903 /* Updates and caches the CV's */
913 MAGIC* mg=mg_find((SV*)stash,'c');
914 AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL;
917 if (mg && amtp->was_ok_am == amagic_generation
918 && amtp->was_ok_sub == sub_generation)
919 return AMT_AMAGIC(amtp);
920 if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
922 for (i=1; i<NofAMmeth; i++) {
923 if (amtp->table[i]) {
924 SvREFCNT_dec(amtp->table[i]);
928 sv_unmagic((SV*)stash, 'c');
930 DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
932 amt.was_ok_am = amagic_generation;
933 amt.was_ok_sub = sub_generation;
934 amt.fallback = AMGfallNO;
937 #ifdef OVERLOAD_VIA_HASH
938 gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */
939 if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
946 /* Work with "fallback" key, which we assume to be first in AMG_names */
948 if (( cp = (char *)AMG_names[0] ) &&
949 (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) {
950 if (SvTRUE(sv)) amt.fallback=AMGfallYES;
951 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
953 for (i = 1; i < NofAMmeth; i++) {
955 cp = (char *)AMG_names[i];
957 svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE);
958 if (svp && ((sv = *svp) != &sv_undef)) {
959 switch (SvTYPE(sv)) {
962 if (!SvOK(sv)) break;
963 gv = gv_fetchmethod(stash, SvPV(sv, na));
964 if (gv) cv = GvCV(gv);
968 if (SvTYPE(cv) == SVt_PVCV)
973 croak("Not a subroutine reference in overload table");
979 if (!(cv = GvCVu((GV*)sv)))
980 cv = sv_2cv(sv, &stash, &gv, TRUE);
985 croak("Method for operation %s not found in package %.256s during blessing\n",
998 /* Work with "fallback" key, which we assume to be first in AMG_names */
1000 if ( cp = (char *)AMG_names[0] ) {
1001 /* Try to find via inheritance. */
1002 gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */
1003 if (gv) sv = GvSV(gv);
1005 if (!gv) goto no_table;
1006 else if (SvTRUE(sv)) amt.fallback=AMGfallYES;
1007 else if (SvOK(sv)) amt.fallback=AMGfallNEVER;
1010 for (i = 1; i < NofAMmeth; i++) {
1012 cp = (char *)AMG_names[i];
1014 *buf = '('; /* A cookie: "(". */
1015 strcpy(buf + 1, cp);
1016 DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n",
1017 cp, HvNAME(stash)) );
1018 gv = gv_fetchmeth(stash, buf, strlen(buf), -1); /* no filling stash! */
1019 if(gv && (cv = GvCV(gv))) {
1021 if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
1022 && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
1023 /* GvSV contains the name of the method. */
1026 DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
1027 SvPV(GvSV(gv), na), cp, HvNAME(stash)) );
1029 && (ngv = gv_fetchmethod(stash, SvPVX(GvSV(gv))))) {
1030 name = SvPVX(GvSV(gv));
1031 cv = GvCV(gv = ngv);
1033 /* Can be an import stub (created by `can'). */
1035 croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'",
1036 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1039 croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'",
1040 (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ),
1043 /* If the sub is only a stub then we may have a gv to AUTOLOAD */
1044 gv = (GV*)*hv_fetch(GvSTASH(gv), name, strlen(name), TRUE);
1047 DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
1048 cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
1049 GvNAME(CvGV(cv))) );
1053 amt.table[i]=(CV*)SvREFCNT_inc(cv);
1056 AMT_AMAGIC_on(&amt);
1057 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
1061 /* Here we have no table: */
1063 AMT_AMAGIC_off(&amt);
1064 sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
1068 /* During call to this subroutine stack can be reallocated. It is
1069 * advised to call SPAGAIN macro in your code after call */
1072 amagic_call(left,right,method,flags)
1080 CV **cvp=NULL, **ocvp=NULL;
1082 int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
1083 int postpr=0, inc_dec_ass=0, assignshift=assign?1:0;
1085 if (!(AMGf_noleft & flags) && SvAMAGIC(left)
1086 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
1087 && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1088 ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
1090 && ((cv = cvp[off=method+assignshift])
1091 || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
1093 (fl = 1, cv = cvp[off=method])))) {
1094 lr = -1; /* Call method for left argument */
1096 if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
1099 /* look for substituted methods */
1102 if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1))
1103 || ((cv = cvp[off=add_amg]) && (postpr=1))) {
1104 right = &sv_yes; lr = -1; assign = 1;
1108 if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1))
1109 || ((cv = cvp[off=subtr_amg]) && (postpr=1))) {
1110 right = &sv_yes; lr = -1; assign = 1;
1114 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg]));
1117 (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg]));
1120 (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
1123 (void)((cv = cvp[off=bool__amg])
1124 || (cv = cvp[off=numer_amg])
1125 || (cv = cvp[off=string_amg]));
1131 if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
1138 SV* newref = newSVsv(ref);
1139 SvOBJECT_on(newref);
1140 SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref));
1146 if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
1147 && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
1148 SV* nullsv=sv_2mortal(newSViv(0));
1150 SV* lessp = amagic_call(left,nullsv,
1151 lt_amg,AMGf_noright);
1152 logic = SvTRUE(lessp);
1154 SV* lessp = amagic_call(left,nullsv,
1155 ncmp_amg,AMGf_noright);
1156 logic = (SvNV(lessp) < 0);
1159 if (off==subtr_amg) {
1170 if (cv = cvp[off=subtr_amg]) {
1172 left = sv_2mortal(newSViv(0));
1179 if (!cv) goto not_found;
1180 } else if (!(AMGf_noright & flags) && SvAMAGIC(right)
1181 && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c'))
1182 && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
1183 ? (amtp = (AMT*)mg->mg_ptr)->table
1185 && (cv = cvp[off=method])) { /* Method for right
1188 } else if (((ocvp && oamtp->fallback > AMGfallNEVER
1189 && (cvp=ocvp) && (lr = -1))
1190 || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
1191 && !(flags & AMGf_unary)) {
1192 /* We look for substitution for
1193 * comparison operations and
1195 if (method==concat_amg || method==concat_ass_amg
1196 || method==repeat_amg || method==repeat_ass_amg) {
1197 return NULL; /* Delegate operation to string conversion */
1207 postpr = 1; off=ncmp_amg; break;
1214 postpr = 1; off=scmp_amg; break;
1216 if (off != -1) cv = cvp[off];
1221 not_found: /* No method found, either report or croak */
1222 if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
1223 notfound = 1; lr = -1;
1224 } else if (cvp && (cv=cvp[nomethod_amg])) {
1225 notfound = 1; lr = 1;
1227 if (off==-1) off=method;
1229 "Operation `%s': no method found,%sargument %s%.256s%s%.256s",
1230 AMG_names[method + assignshift],
1231 (flags & AMGf_unary ? " " : "\n\tleft "),
1233 "in overloaded package ":
1234 "has no overloaded magic",
1236 HvNAME(SvSTASH(SvRV(left))):
1239 ",\n\tright argument in overloaded package ":
1242 : ",\n\tright argument has no overloaded magic"),
1244 HvNAME(SvSTASH(SvRV(right))):
1246 if (amtp && amtp->fallback >= AMGfallYES) {
1247 DEBUG_o( deb(buf) );
1257 "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n",
1259 method+assignshift==off? "" :
1261 method+assignshift==off? "" :
1262 AMG_names[method+assignshift],
1263 method+assignshift==off? "" : "')",
1264 flags & AMGf_unary? "" :
1265 lr==1 ? " for right argument": " for left argument",
1266 flags & AMGf_unary? " for argument" : "",
1268 fl? ",\n\tassignment variant used": "") );
1269 /* Since we use shallow copy during assignment, we need
1270 * to dublicate the contents, probably calling user-supplied
1271 * version of copy operator
1273 if ((method + assignshift==off
1274 && (assign || method==inc_amg || method==dec_amg))
1275 || inc_dec_ass) RvDEEPCP(left);
1282 Zero(&myop, 1, BINOP);
1283 myop.op_last = (OP *) &myop;
1284 myop.op_next = Nullop;
1285 myop.op_flags = OPf_KNOW|OPf_STACKED;
1290 if (perldb && curstash != debstash)
1291 op->op_private |= OPpENTERSUB_DB;
1295 EXTEND(sp, notfound + 5);
1296 PUSHs(lr>0? right: left);
1297 PUSHs(lr>0? left: right);
1298 PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no));
1300 PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
1305 if (op = pp_entersub())
1314 /* sv_2mortal(res); */
1323 ans=SvIV(res)<=0; break;
1326 ans=SvIV(res)<0; break;
1329 ans=SvIV(res)>=0; break;
1332 ans=SvIV(res)>0; break;
1335 ans=SvIV(res)==0; break;
1338 ans=SvIV(res)!=0; break;
1341 SvSetSV(left,res); return left;
1343 ans=!SvOK(res); break;
1345 return ans? &sv_yes: &sv_no;
1346 } else if (method==copy_amg) {
1348 croak("Copy method did not return a reference");
1350 return SvREFCNT_inc(SvRV(res));
1356 #endif /* OVERLOAD */