X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/79072805bf63abe5b5978b5928ab00d360ea3e7f..1d3434b8c1ecb43ba830424cfca969ab84444ed7:/gv.c diff --git a/gv.c b/gv.c index 9e1f533..b48e4d8 100644 --- a/gv.c +++ b/gv.c @@ -1,310 +1,929 @@ -/* $RCSfile: gv.c,v $$Revision: 4.1 $$Date: 92/08/07 18:26:39 $ +/* gv.c * - * Copyright (c) 1991, Larry Wall + * Copyright (c) 1991-1997, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * - * $Log: gv.c,v $ - * Revision 4.1 92/08/07 18:26:39 lwall - * - * Revision 4.0.1.4 92/06/08 15:32:19 lwall - * patch20: fixed confusion between a *var's real name and its effective name - * patch20: the debugger now warns you on lines that can't set a breakpoint - * patch20: the debugger made perl forget the last pattern used by // - * patch20: paragraph mode now skips extra newlines automatically - * patch20: ($<,$>) = ... didn't work on some architectures - * - * Revision 4.0.1.3 91/11/05 18:35:33 lwall - * patch11: length($x) was sometimes wrong for numeric $x - * patch11: perl now issues warning if $SIG{'ALARM'} is referenced - * patch11: *foo = undef coredumped - * patch11: solitary subroutine references no longer trigger typo warnings - * patch11: local(*FILEHANDLE) had a memory leak - * - * Revision 4.0.1.2 91/06/07 11:55:53 lwall - * patch4: new copyright notice - * patch4: added $^P variable to control calling of perldb routines - * patch4: added $^F variable to specify maximum system fd, default 2 - * patch4: $` was busted inside s/// - * patch4: default top-of-form run_format is now FILEHANDLE_TOP - * patch4: length($`), length($&), length($') now optimized to avoid string copy - * patch4: $^D |= 1024 now does syntax tree dump at run-time - * - * Revision 4.0.1.1 91/04/12 09:10:24 lwall - * patch1: Configure now differentiates getgroups() type from getgid() type - * patch1: you may now use "die" and "caller" in a signal handler - * - * Revision 4.0 91/03/20 01:39:41 lwall - * 4.0 baseline. - * + */ + +/* + * 'Mercy!' cried Gandalf. 'If the giving of information is to be the cure + * of your inquisitiveness, I shall spend all the rest of my days answering + * you. What more do you want to know?' + * 'The names of all the stars, and of all living things, and the whole + * history of Middle-earth and Over-heaven and of the Sundering Seas,' + * laughed Pippin. */ #include "EXTERN.h" #include "perl.h" +EXT char rcsid[]; + GV * -gv_AVadd(gv) -register GV *gv; +gv_AVadd(register GV *gv) { + if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) + croak("Bad symbol for array"); if (!GvAV(gv)) GvAV(gv) = newAV(); return gv; } GV * -gv_HVadd(gv) -register GV *gv; +gv_HVadd(register GV *gv) { + if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) + croak("Bad symbol for hash"); if (!GvHV(gv)) - GvHV(gv) = newHV(COEFFSIZE); + GvHV(gv) = newHV(); + return gv; +} + +GV * +gv_IOadd(register GV *gv) +{ + if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) + croak("Bad symbol for filehandle"); + if (!GvIOp(gv)) + GvIOp(gv) = newIO(); return gv; } GV * -gv_fetchfile(name) -char *name; +gv_fetchfile(char *name) { - char tmpbuf[1200]; + dTHR; + char smallbuf[256]; + char *tmpbuf; + STRLEN tmplen; GV *gv; - sprintf(tmpbuf,"'_<%s", name); - gv = gv_fetchpv(tmpbuf, TRUE); + tmplen = strlen(name) + 2; + if (tmplen < sizeof smallbuf) + tmpbuf = smallbuf; + else + New(603, tmpbuf, tmplen + 1, char); + tmpbuf[0] = '_'; + tmpbuf[1] = '<'; + strcpy(tmpbuf + 2, name); + gv = *(GV**)hv_fetch(defstash, tmpbuf, tmplen, TRUE); + if (!isGV(gv)) + gv_init(gv, defstash, tmpbuf, tmplen, FALSE); + if (tmpbuf != smallbuf) + Safefree(tmpbuf); sv_setpv(GvSV(gv), name); - if (perldb) - (void)gv_HVadd(gv_AVadd(gv)); + if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm"))) + GvMULTI_on(gv); + if (PERLDB_LINE) + hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L'); return gv; } +void +gv_init(GV *gv, HV *stash, char *name, STRLEN len, int multi) +{ + dTHR; + register GP *gp; + bool doproto = SvTYPE(gv) > SVt_NULL; + char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; + + sv_upgrade((SV*)gv, SVt_PVGV); + if (SvLEN(gv)) { + if (proto) { + SvPVX(gv) = NULL; + SvLEN(gv) = 0; + SvPOK_off(gv); + } else + Safefree(SvPVX(gv)); + } + Newz(602, gp, 1, GP); + GvGP(gv) = gp_ref(gp); + GvSV(gv) = NEWSV(72,0); + GvLINE(gv) = curcop->cop_line; + GvFILEGV(gv) = curcop->cop_filegv; + GvEGV(gv) = gv; + sv_magic((SV*)gv, (SV*)gv, '*', name, len); + GvSTASH(gv) = (HV*)SvREFCNT_inc(stash); + GvNAME(gv) = savepvn(name, len); + GvNAMELEN(gv) = len; + if (multi) + GvMULTI_on(gv); + if (doproto) { /* Replicate part of newSUB here. */ + ENTER; + start_subparse(0,0); /* Create CV in compcv. */ + GvCV(gv) = compcv; + LEAVE; + + GvCVGEN(gv) = 0; + sub_generation++; + CvGV(GvCV(gv)) = (GV*)SvREFCNT_inc(gv); + CvFILEGV(GvCV(gv)) = curcop->cop_filegv; + CvSTASH(GvCV(gv)) = curstash; +#ifdef USE_THREADS + CvOWNER(GvCV(gv)) = 0; + New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex); + MUTEX_INIT(CvMUTEXP(GvCV(gv))); +#endif /* USE_THREADS */ + if (proto) { + sv_setpv((SV*)GvCV(gv), proto); + Safefree(proto); + } + } +} + +static void +gv_init_sv(GV *gv, I32 sv_type) +{ + switch (sv_type) { + case SVt_PVIO: + (void)GvIOn(gv); + break; + case SVt_PVAV: + (void)GvAVn(gv); + break; + case SVt_PVHV: + (void)GvHVn(gv); + break; + } +} + GV * -gv_fetchmethod(stash, name) -HV* stash; -char* name; +gv_fetchmeth(HV *stash, char *name, STRLEN len, I32 level) { AV* av; + GV* topgv; GV* gv; - GV** gvp = (GV**)hv_fetch(stash,name,strlen(name),FALSE); - if (gvp && (gv = *gvp) != (GV*)&sv_undef && GvCV(gv)) - return gv; + GV** gvp; + CV* cv; + + if (!stash) + return 0; + if ((level > 100) || (level < -100)) + croak("Recursive inheritance detected"); + + DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) ); + + gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); + if (!gvp) + topgv = Nullgv; + else { + topgv = *gvp; + if (SvTYPE(topgv) != SVt_PVGV) + gv_init(topgv, stash, name, len, TRUE); + if (cv = GvCV(topgv)) { + /* If genuine method or valid cache entry, use it */ + if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation) + return topgv; + /* Stale cached entry: junk it */ + SvREFCNT_dec(cv); + GvCV(topgv) = cv = Nullcv; + GvCVGEN(topgv) = 0; + } + } + + gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE); + av = (gvp && (gv = *gvp) && gv != (GV*)&sv_undef) ? GvAV(gv) : Nullav; - gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); - if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { + /* create and re-create @.*::SUPER::ISA on demand */ + if (!av || !SvMAGIC(av)) { + char* packname = HvNAME(stash); + STRLEN packlen = strlen(packname); + + if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) { + HV* basestash; + + packlen -= 7; + basestash = gv_stashpvn(packname, packlen, TRUE); + gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE); + if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { + dTHR; /* just for SvREFCNT_dec */ + gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE); + if (!gvp || !(gv = *gvp)) + croak("Cannot create %s::ISA", HvNAME(stash)); + if (SvTYPE(gv) != SVt_PVGV) + gv_init(gv, stash, "ISA", 3, TRUE); + SvREFCNT_dec(GvAV(gv)); + GvAV(gv) = (AV*)SvREFCNT_inc(av); + } + } + } + + if (av) { SV** svp = AvARRAY(av); - I32 items = AvFILL(av) + 1; + /* NOTE: No support for tied ISA */ + I32 items = AvFILLp(av) + 1; while (items--) { - char tmpbuf[512]; SV* sv = *svp++; - *tmpbuf = '_'; - SvUPGRADE(sv, SVt_PV); - strcpy(tmpbuf+1,SvPVn(sv)); - gv = gv_fetchpv(tmpbuf,FALSE); - if (!gv || !(stash = GvHV(gv))) { + HV* basestash = gv_stashsv(sv, FALSE); + if (!basestash) { if (dowarn) - warn("Can't locate package %s for @%s'ISA", - SvPV(sv), HvNAME(stash)); + warn("Can't locate package %s for @%s::ISA", + SvPVX(sv), HvNAME(stash)); continue; } - gv = gv_fetchmethod(stash, name); + gv = gv_fetchmeth(basestash, name, len, + (level >= 0) ? level + 1 : level - 1); if (gv) + goto gotcha; + } + } + + /* if at top level, try UNIVERSAL */ + + if (level == 0 || level == -1) { + HV* lastchance; + + if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { + if (gv = gv_fetchmeth(lastchance, name, len, + (level >= 0) ? level + 1 : level - 1)) { + gotcha: + /* + * Cache method in topgv if: + * 1. topgv has no synonyms (else inheritance crosses wires) + * 2. method isn't a stub (else AUTOLOAD fails spectacularly) + */ + if (topgv && + GvREFCNT(topgv) == 1 && + (cv = GvCV(gv)) && + (CvROOT(cv) || CvXSUB(cv))) + { + if (cv = GvCV(topgv)) + SvREFCNT_dec(cv); + GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); + GvCVGEN(topgv) = sub_generation; + } return gv; + } } } + return 0; } GV * -gv_fetchpv(name,add) -register char *name; -I32 add; +gv_fetchmethod(HV *stash, char *name) { - register GV *gv; + return gv_fetchmethod_autoload(stash, name, TRUE); +} + +GV * +gv_fetchmethod_autoload(HV *stash, char *name, I32 autoload) +{ + dTHR; + register char *nend; + char *nsplit = 0; + GV* gv; + + for (nend = name; *nend; nend++) { + if (*nend == '\'') + nsplit = nend; + else if (*nend == ':' && *(nend + 1) == ':') + nsplit = ++nend; + } + if (nsplit) { + char *origname = name; + name = nsplit + 1; + if (*nsplit == ':') + --nsplit; + if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { + /* ->SUPER::method should really be looked up in original stash */ + SV *tmpstr = sv_2mortal(newSVpvf("%s::SUPER", + HvNAME(curcop->cop_stash))); + stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); + DEBUG_o( deb("Treating %s as %s::%s\n", + origname, HvNAME(stash), name) ); + } + else + stash = gv_stashpvn(origname, nsplit - origname, TRUE); + } + + gv = gv_fetchmeth(stash, name, nend - name, 0); + if (!gv) { + if (strEQ(name,"import")) + gv = (GV*)&sv_yes; + else if (autoload) + gv = gv_autoload4(stash, name, nend - name, TRUE); + } + else if (autoload) { + CV* cv = GvCV(gv); + if (!CvROOT(cv) && !CvXSUB(cv)) { + GV* stubgv; + GV* autogv; + + if (CvANON(cv)) + stubgv = gv; + else { + stubgv = CvGV(cv); + if (GvCV(stubgv) != cv) /* orphaned import */ + stubgv = gv; + } + autogv = gv_autoload4(GvSTASH(stubgv), + GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); + if (autogv) + gv = autogv; + } + } + + return gv; +} + +GV* +gv_autoload4(HV *stash, char *name, STRLEN len, I32 method) +{ + static char autoload[] = "AUTOLOAD"; + static STRLEN autolen = 8; + GV* gv; + CV* cv; + HV* varstash; + GV* vargv; + SV* varsv; + + if (len == autolen && strnEQ(name, autoload, autolen)) + return Nullgv; + if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) + return Nullgv; + cv = GvCV(gv); + + /* + * Inheriting AUTOLOAD for non-methods works ... for now. + */ + if (dowarn && !method && (GvCVGEN(gv) || GvSTASH(gv) != stash)) + warn( + "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", + HvNAME(stash), (int)len, name); + + /* + * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. + * The subroutine's original name may not be "AUTOLOAD", so we don't + * use that, but for lack of anything better we will use the sub's + * original package to look up $AUTOLOAD. + */ + varstash = GvSTASH(CvGV(cv)); + vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); + if (!isGV(vargv)) + gv_init(vargv, varstash, autoload, autolen, FALSE); + varsv = GvSV(vargv); + sv_setpv(varsv, HvNAME(stash)); + sv_catpvn(varsv, "::", 2); + sv_catpvn(varsv, name, len); + SvTAINTED_off(varsv); + return gv; +} + +HV* +gv_stashpv(char *name, I32 create) +{ + return gv_stashpvn(name, strlen(name), create); +} + +HV* +gv_stashpvn(char *name, U32 namelen, I32 create) +{ + char smallbuf[256]; + char *tmpbuf; + HV *stash; + GV *tmpgv; + + if (namelen + 3 < sizeof smallbuf) + tmpbuf = smallbuf; + else + New(606, tmpbuf, namelen + 3, char); + Copy(name,tmpbuf,namelen,char); + tmpbuf[namelen++] = ':'; + tmpbuf[namelen++] = ':'; + tmpbuf[namelen] = '\0'; + tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV); + if (tmpbuf != smallbuf) + Safefree(tmpbuf); + if (!tmpgv) + return 0; + if (!GvHV(tmpgv)) + GvHV(tmpgv) = newHV(); + stash = GvHV(tmpgv); + if (!HvNAME(stash)) + HvNAME(stash) = savepv(name); + return stash; +} + +HV* +gv_stashsv(SV *sv, I32 create) +{ + register char *ptr; + STRLEN len; + ptr = SvPV(sv,len); + return gv_stashpvn(ptr, len, create); +} + + +GV * +gv_fetchpv(char *nambeg, I32 add, I32 sv_type) +{ + dTHR; + register char *name = nambeg; + register GV *gv = 0; GV**gvp; - register GP *gp; I32 len; register char *namend; - HV *stash; - char *sawquote = Nullch; - char *prevquote = Nullch; - bool global = FALSE; - - if (isUPPER(*name)) { - if (*name > 'I') { - if (*name == 'S' && ( - strEQ(name, "SIG") || - strEQ(name, "STDIN") || - strEQ(name, "STDOUT") || - strEQ(name, "STDERR") )) - global = TRUE; - } - else if (*name > 'E') { - if (*name == 'I' && strEQ(name, "INC")) - global = TRUE; + HV *stash = 0; + U32 add_gvflags = 0; + + if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ + name++; + + for (namend = name; *namend; namend++) { + if ((*namend == '\'' && namend[1]) || + (*namend == ':' && namend[1] == ':')) + { + if (!stash) + stash = defstash; + if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ + return Nullgv; + + len = namend - name; + if (len > 0) { + char *tmpbuf; + char autobuf[64]; + + if (len < sizeof(autobuf) - 2) + tmpbuf = autobuf; + else + New(601, tmpbuf, len+3, char); + Copy(name, tmpbuf, len, char); + tmpbuf[len++] = ':'; + tmpbuf[len++] = ':'; + tmpbuf[len] = '\0'; + gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); + gv = gvp ? *gvp : Nullgv; + if (gv && gv != (GV*)&sv_undef) { + if (SvTYPE(gv) != SVt_PVGV) + gv_init(gv, stash, tmpbuf, len, (add & 2)); + else + GvMULTI_on(gv); + } + if (tmpbuf != autobuf) + Safefree(tmpbuf); + if (!gv || gv == (GV*)&sv_undef) + return Nullgv; + + if (!(stash = GvHV(gv))) + stash = GvHV(gv) = newHV(); + + if (!HvNAME(stash)) + HvNAME(stash) = savepvn(nambeg, namend - nambeg); + } + + if (*namend == ':') + namend++; + namend++; + name = namend; + if (!*name) + return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE); } - else if (*name > 'A') { - if (*name == 'E' && strEQ(name, "ENV")) + } + len = namend - name; + if (!len) + len = 1; + + /* No stash in name, so see how we can default */ + + if (!stash) { + if (isIDFIRST(*name)) { + bool global = FALSE; + + if (isUPPER(*name)) { + if (*name > 'I') { + if (*name == 'S' && ( + strEQ(name, "SIG") || + strEQ(name, "STDIN") || + strEQ(name, "STDOUT") || + strEQ(name, "STDERR") )) + global = TRUE; + } + else if (*name > 'E') { + if (*name == 'I' && strEQ(name, "INC")) + global = TRUE; + } + else if (*name > 'A') { + if (*name == 'E' && strEQ(name, "ENV")) + global = TRUE; + } + else if (*name == 'A' && ( + strEQ(name, "ARGV") || + strEQ(name, "ARGVOUT") )) + global = TRUE; + } + else if (*name == '_' && !name[1]) global = TRUE; + + if (global) + stash = defstash; + else if ((COP*)curcop == &compiling) { + stash = curstash; + if (add && (hints & HINT_STRICT_VARS) && + sv_type != SVt_PVCV && + sv_type != SVt_PVGV && + sv_type != SVt_PVFM && + sv_type != SVt_PVIO && + !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) + { + gvp = (GV**)hv_fetch(stash,name,len,0); + if (!gvp || + *gvp == (GV*)&sv_undef || + SvTYPE(*gvp) != SVt_PVGV) + { + stash = 0; + } + else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || + sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || + sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) + { + warn("Variable \"%c%s\" is not imported", + sv_type == SVt_PVAV ? '@' : + sv_type == SVt_PVHV ? '%' : '$', + name); + if (GvCVu(*gvp)) + warn("(Did you mean &%s instead?)\n", name); + stash = 0; + } + } + } + else + stash = curcop->cop_stash; } - else if (*name == 'A' && ( - strEQ(name, "ARGV") || - strEQ(name, "ARGVOUT") )) - global = TRUE; - } - for (namend = name; *namend; namend++) { - if (*namend == '\'' && namend[1]) - prevquote = sawquote, sawquote = namend; + else + stash = defstash; } - if (sawquote == name && name[1]) { - stash = defstash; - sawquote = Nullch; - name++; - } - else if (!isALPHA(*name) || global) - stash = defstash; - else if ((COP*)curcop == &compiling) - stash = curstash; - else - stash = curcop->cop_stash; - if (sawquote) { - char tmpbuf[256]; - char *s, *d; - - *sawquote = '\0'; - /*SUPPRESS 560*/ - if (s = prevquote) { - strncpy(tmpbuf,name,s-name+1); - d = tmpbuf+(s-name+1); - *d++ = '_'; - strcpy(d,s+1); - } - else { - *tmpbuf = '_'; - strcpy(tmpbuf+1,name); + + /* By this point we should have a stash and a name */ + + if (!stash) { + if (!add) + return Nullgv; + if (add & ~2) { + char sv_type_char = ((sv_type == SVt_PV) ? '$' + : (sv_type == SVt_PVAV) ? '@' + : (sv_type == SVt_PVHV) ? '%' + : 0); + if (sv_type_char) + warn("Global symbol \"%c%s\" requires explicit package name", + sv_type_char, name); + else + warn("Global symbol \"%s\" requires explicit package name", + name); } - gv = gv_fetchpv(tmpbuf,TRUE); - if (!(stash = GvHV(gv))) - stash = GvHV(gv) = newHV(0); - if (!HvNAME(stash)) - HvNAME(stash) = savestr(name); - name = sawquote+1; - *sawquote = '\''; + ++error_count; + stash = curstash ? curstash : defstash; /* avoid core dumps */ + add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV + : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV + : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV + : 0); } - len = namend - name; + + if (!SvREFCNT(stash)) /* symbol table under destruction */ + return Nullgv; + gvp = (GV**)hv_fetch(stash,name,len,add); if (!gvp || *gvp == (GV*)&sv_undef) return Nullgv; gv = *gvp; if (SvTYPE(gv) == SVt_PVGV) { - SvMULTI_on(gv); + if (add) { + GvMULTI_on(gv); + gv_init_sv(gv, sv_type); + } return gv; - } - else { - sv_upgrade(gv, SVt_PVGV); - if (SvLEN(gv)) - Safefree(SvPV(gv)); - Newz(602,gp, 1, GP); - GvGP(gv) = gp; - GvREFCNT(gv) = 1; - GvSV(gv) = NEWSV(72,0); - GvLINE(gv) = curcop->cop_line; - GvEGV(gv) = gv; - sv_magic((SV*)gv, (SV*)gv, '*', name, len); - GvSTASH(gv) = stash; - GvNAME(gv) = nsavestr(name, len); - GvNAMELEN(gv) = len; - if (isDIGIT(*name) && *name != '0') - sv_magic(GvSV(gv), (SV*)gv, 0, name, len); - if (add & 2) - SvMULTI_on(gv); + } else if (add & GV_NOINIT) { return gv; } + + /* Adding a new symbol */ + + if (add & GV_ADDWARN) + warn("Had to create %s unexpectedly", nambeg); + gv_init(gv, stash, name, len, add & GV_ADDMULTI); + gv_init_sv(gv, sv_type); + GvFLAGS(gv) |= add_gvflags; + + /* set up magic where warranted */ + switch (*name) { + case 'A': + if (strEQ(name, "ARGV")) { + IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; + } + break; + + case 'a': + case 'b': + if (len == 1) + GvMULTI_on(gv); + break; + case 'E': + if (strnEQ(name, "EXPORT", 6)) + GvMULTI_on(gv); + break; + case 'I': + if (strEQ(name, "ISA")) { + AV* av = GvAVn(gv); + GvMULTI_on(gv); + sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); + /* NOTE: No support for tied ISA */ + if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") + && AvFILLp(av) == -1) + { + char *pname; + av_push(av, newSVpv(pname = "NDBM_File",0)); + gv_stashpvn(pname, 9, TRUE); + av_push(av, newSVpv(pname = "DB_File",0)); + gv_stashpvn(pname, 7, TRUE); + av_push(av, newSVpv(pname = "GDBM_File",0)); + gv_stashpvn(pname, 9, TRUE); + av_push(av, newSVpv(pname = "SDBM_File",0)); + gv_stashpvn(pname, 9, TRUE); + av_push(av, newSVpv(pname = "ODBM_File",0)); + gv_stashpvn(pname, 9, TRUE); + } + } + break; +#ifdef OVERLOAD + case 'O': + if (strEQ(name, "OVERLOAD")) { + HV* hv = GvHVn(gv); + GvMULTI_on(gv); + hv_magic(hv, gv, 'A'); + } + break; +#endif /* OVERLOAD */ + case 'S': + if (strEQ(name, "SIG")) { + HV *hv; + I32 i; + siggv = gv; + GvMULTI_on(siggv); + hv = GvHVn(siggv); + hv_magic(hv, siggv, 'S'); + for(i=1;sig_name[i];i++) { + SV ** init; + init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1); + if(init) + sv_setsv(*init,&sv_undef); + psig_ptr[i] = 0; + psig_name[i] = 0; + } + } + break; + + case '&': + if (len > 1) + break; + ampergv = gv; + sawampersand = TRUE; + goto ro_magicalize; + + case '`': + if (len > 1) + break; + leftgv = gv; + sawampersand = TRUE; + goto ro_magicalize; + + case '\'': + if (len > 1) + break; + rightgv = gv; + sawampersand = TRUE; + goto ro_magicalize; + + case ':': + if (len > 1) + break; + sv_setpv(GvSV(gv),chopset); + goto magicalize; + + case '?': + if (len > 1) + break; +#ifdef COMPLEX_STATUS + sv_upgrade(GvSV(gv), SVt_PVLV); +#endif + goto magicalize; + + case '!': + if(len > 1) + break; + if(sv_type > SVt_PV) { + HV* stash = gv_stashpvn("Errno",5,FALSE); + if(!stash || !(gv_fetchmethod(stash, "TIEHASH"))) { + dSP; + PUTBACK; + perl_require_pv("Errno.pm"); + SPAGAIN; + stash = gv_stashpvn("Errno",5,FALSE); + if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) + croak("Can't use %%! because Errno.pm is not avaliable"); + } + } + goto magicalize; + case '#': + case '*': + if (dowarn && len == 1 && sv_type == SVt_PV) + warn("Use of $%s is deprecated", name); + /* FALL THROUGH */ + case '[': + case '^': + case '~': + case '=': + case '-': + case '%': + case '.': + case '(': + case ')': + case '<': + case '>': + case ',': + case '\\': + case '/': + case '|': + case '\001': + case '\004': + case '\005': + case '\006': + case '\010': + case '\017': + case '\t': + case '\020': + case '\024': + case '\027': + if (len > 1) + break; + goto magicalize; + + case '+': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case '\023': + ro_magicalize: + SvREADONLY_on(GvSV(gv)); + magicalize: + sv_magic(GvSV(gv), (SV*)gv, 0, name, len); + break; + + case '\014': + if (len > 1) + break; + sv_setpv(GvSV(gv),"\f"); + formfeed = GvSV(gv); + break; + case ';': + if (len > 1) + break; + sv_setpv(GvSV(gv),"\034"); + break; + case ']': + if (len == 1) { + SV *sv = GvSV(gv); + sv_upgrade(sv, SVt_PVNV); + sv_setpv(sv, patchlevel); + (void)sv_2nv(sv); + SvREADONLY_on(sv); + } + break; + } + return gv; } void -gv_fullname(sv,gv) -SV *sv; -GV *gv; +gv_fullname3(SV *sv, GV *gv, char *prefix) { HV *hv = GvSTASH(gv); - - if (!hv) + if (!hv) { + SvOK_off(sv); return; - sv_setpv(sv, sv == (SV*)gv ? "*" : ""); + } + sv_setpv(sv, prefix ? prefix : ""); sv_catpv(sv,HvNAME(hv)); - sv_catpvn(sv,"'", 1); + sv_catpvn(sv,"::", 2); sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); } void -gv_efullname(sv,gv) -SV *sv; -GV *gv; +gv_efullname3(SV *sv, GV *gv, char *prefix) { - GV* egv = GvEGV(gv); - HV *hv = GvSTASH(egv); + GV *egv = GvEGV(gv); + if (!egv) + egv = gv; + gv_fullname3(sv, egv, prefix); +} - if (!hv) - return; - sv_setpv(sv, sv == (SV*)gv ? "*" : ""); - sv_catpv(sv,HvNAME(hv)); - sv_catpvn(sv,"'", 1); - sv_catpvn(sv,GvNAME(egv),GvNAMELEN(egv)); +/* XXX compatibility with versions <= 5.003. */ +void +gv_fullname(SV *sv, GV *gv) +{ + gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); +} + +/* XXX compatibility with versions <= 5.003. */ +void +gv_efullname(SV *sv, GV *gv) +{ + gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); } IO * -newIO() +newIO(void) { + dTHR; IO *io; + GV *iogv; - Newz(603,io,1,IO); - io->page_len = 60; + io = (IO*)NEWSV(0,0); + sv_upgrade((SV *)io,SVt_PVIO); + SvREFCNT(io) = 1; + SvOBJECT_on(io); + iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); + if (!iogv) + iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); + SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); return io; } void -gv_check(min,max) -I32 min; -register I32 max; +gv_check(HV *stash) { + dTHR; register HE *entry; register I32 i; register GV *gv; + HV *hv; + GV *filegv; - for (i = min; i <= max; i++) { - for (entry = HvARRAY(defstash)[i]; entry; entry = entry->hent_next) { - gv = (GV*)entry->hent_val; - if (SvMULTI(gv)) - continue; - curcop->cop_line = GvLINE(gv); - warn("Possible typo: \"%s\"", GvNAME(gv)); + if (!HvARRAY(stash)) + return; + for (i = 0; i <= (I32) HvMAX(stash); i++) { + for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { + if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && + (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) + { + if (hv != defstash) + gv_check(hv); /* nested package */ + } + else if (isALPHA(*HeKEY(entry))) { + gv = (GV*)HeVAL(entry); + if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) + continue; + curcop->cop_line = GvLINE(gv); + filegv = GvFILEGV(gv); + curcop->cop_filegv = filegv; + if (filegv && GvMULTI(filegv)) /* Filename began with slash */ + continue; + warn("Name \"%s::%s\" used only once: possible typo", + HvNAME(stash), GvNAME(gv)); + } } } } GV * -newGVgen() +newGVgen(char *pack) { - (void)sprintf(tokenbuf,"_GEN_%d",gensym++); - return gv_fetchpv(tokenbuf,TRUE); + return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)gensym++), + TRUE, SVt_PVGV); } /* hopefully this is only called on local symbol table entries */ GP* -gp_ref(gp) -GP* gp; +gp_ref(GP *gp) { gp->gp_refcnt++; + if (gp->gp_cv) { + if (gp->gp_cvgen) { + /* multi-named GPs cannot be used for method cache */ + SvREFCNT_dec(gp->gp_cv); + gp->gp_cv = Nullcv; + gp->gp_cvgen = 0; + } + else { + /* Adding a new name to a subroutine invalidates method cache */ + sub_generation++; + } + } return gp; - } void -gp_free(gv) -GV* gv; +gp_free(GV *gv) { - IO *io; - CV *cv; GP* gp; + CV* cv; if (!gv || !(gp = GvGP(gv))) return; @@ -312,20 +931,23 @@ GV* gv; warn("Attempt to free unreferenced glob pointers"); return; } - if (--gp->gp_refcnt > 0) + if (gp->gp_cv) { + /* Deleting the name of a subroutine invalidates method cache */ + sub_generation++; + } + if (--gp->gp_refcnt > 0) { + if (gp->gp_egv == gv) + gp->gp_egv = 0; return; - - sv_free(gp->gp_sv); - sv_free(gp->gp_av); - sv_free(gp->gp_hv); - if (io = gp->gp_io) { - do_close(gv,FALSE); - Safefree(io->top_name); - Safefree(io->fmt_name); - Safefree(io); } - if (cv = gp->gp_cv) - sv_free(cv); + + SvREFCNT_dec(gp->gp_sv); + SvREFCNT_dec(gp->gp_av); + SvREFCNT_dec(gp->gp_hv); + SvREFCNT_dec(gp->gp_io); + SvREFCNT_dec(gp->gp_cv); + SvREFCNT_dec(gp->gp_form); + Safefree(gp); GvGP(gv) = 0; } @@ -354,35 +976,445 @@ register GV *gv; } #endif /* Microport 2.4 hack */ -GV * -fetch_gv(op,num) -OP *op; -I32 num; +#ifdef OVERLOAD +/* Updates and caches the CV's */ + +bool +Gv_AMupdate(HV *stash) { - if (op->op_private < num) - return 0; - if (op->op_flags & OPf_STACKED) - return gv_fetchpv(SvPVnx(*(stack_sp--)),TRUE); - else - return cGVOP->op_gv; + dTHR; + GV** gvp; + HV* hv; + GV* gv; + CV* cv; + MAGIC* mg=mg_find((SV*)stash,'c'); + AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; + AMT amt; + + if (mg && amtp->was_ok_am == amagic_generation + && amtp->was_ok_sub == sub_generation) + return AMT_AMAGIC(amtp); + if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ + int i; + for (i=1; itable[i]) { + SvREFCNT_dec(amtp->table[i]); + } + } + } + sv_unmagic((SV*)stash, 'c'); + + DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) ); + + amt.was_ok_am = amagic_generation; + amt.was_ok_sub = sub_generation; + amt.fallback = AMGfallNO; + amt.flags = 0; + +#ifdef OVERLOAD_VIA_HASH + gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ + if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) { + int filled=0; + int i; + char *cp; + SV* sv; + SV** svp; + + /* Work with "fallback" key, which we assume to be first in AMG_names */ + + if (( cp = (char *)AMG_names[0] ) && + (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { + if (SvTRUE(sv)) amt.fallback=AMGfallYES; + else if (SvOK(sv)) amt.fallback=AMGfallNEVER; + } + for (i = 1; i < NofAMmeth; i++) { + cv = 0; + cp = (char *)AMG_names[i]; + + svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); + if (svp && ((sv = *svp) != &sv_undef)) { + switch (SvTYPE(sv)) { + default: + if (!SvROK(sv)) { + if (!SvOK(sv)) break; + gv = gv_fetchmethod(stash, SvPV(sv, na)); + if (gv) cv = GvCV(gv); + break; + } + cv = (CV*)SvRV(sv); + if (SvTYPE(cv) == SVt_PVCV) + break; + /* FALL THROUGH */ + case SVt_PVHV: + case SVt_PVAV: + croak("Not a subroutine reference in overload table"); + return FALSE; + case SVt_PVCV: + cv = (CV*)sv; + break; + case SVt_PVGV: + if (!(cv = GvCVu((GV*)sv))) + cv = sv_2cv(sv, &stash, &gv, TRUE); + break; + } + if (cv) filled=1; + else { + croak("Method for operation %s not found in package %.256s during blessing\n", + cp,HvNAME(stash)); + return FALSE; + } + } +#else + { + int filled = 0; + int i; + const char *cp; + SV* sv = NULL; + SV** svp; + + /* Work with "fallback" key, which we assume to be first in AMG_names */ + + if ( cp = AMG_names[0] ) { + /* Try to find via inheritance. */ + gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */ + if (gv) sv = GvSV(gv); + + if (!gv) goto no_table; + else if (SvTRUE(sv)) amt.fallback=AMGfallYES; + else if (SvOK(sv)) amt.fallback=AMGfallNEVER; + } + + for (i = 1; i < NofAMmeth; i++) { + SV *cookie = sv_2mortal(newSVpvf("(%s", cp = AMG_names[i])); + DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n", + cp, HvNAME(stash)) ); + /* don't fill the cache while looking up! */ + gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1); + cv = 0; + if(gv && (cv = GvCV(gv))) { + if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") + && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { + /* GvSV contains the name of the method. */ + GV *ngv; + + DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n", + SvPV(GvSV(gv), na), cp, HvNAME(stash)) ); + if (!SvPOK(GvSV(gv)) + || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), + FALSE))) + { + /* Can be an import stub (created by `can'). */ + if (GvCVGEN(gv)) { + croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'", + (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), + cp, HvNAME(stash)); + } else + croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'", + (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), + cp, HvNAME(stash)); + } + cv = GvCV(gv = ngv); + } + DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", + cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), + GvNAME(CvGV(cv))) ); + filled = 1; + } +#endif + amt.table[i]=(CV*)SvREFCNT_inc(cv); + } + if (filled) { + AMT_AMAGIC_on(&amt); + sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); + return TRUE; + } + } + /* Here we have no table: */ + no_table: + AMT_AMAGIC_off(&amt); + sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); + return FALSE; } -IO * -fetch_io(op,num) -OP *op; -I32 num; +SV* +amagic_call(SV *left, SV *right, int method, int flags) { - GV *gv; + dTHR; + MAGIC *mg; + CV *cv; + CV **cvp=NULL, **ocvp=NULL; + AMT *amtp, *oamtp; + int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; + int postpr=0, inc_dec_ass=0, assignshift=assign?1:0; + HV* stash; + if (!(AMGf_noleft & flags) && SvAMAGIC(left) + && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) + && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) + ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table + : (CV **) NULL)) + && ((cv = cvp[off=method+assignshift]) + || (assign && amtp->fallback > AMGfallNEVER && /* fallback to + * usual method */ + (fl = 1, cv = cvp[off=method])))) { + lr = -1; /* Call method for left argument */ + } else { + if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { + int logic; - if (op->op_private < num) - return 0; - if (op->op_flags & OPf_STACKED) - gv = gv_fetchpv(SvPVnx(*(stack_sp--)),TRUE); - else - gv = cGVOP->op_gv; + /* look for substituted methods */ + switch (method) { + case inc_amg: + if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1)) + || ((cv = cvp[off=add_amg]) && (postpr=1))) { + right = &sv_yes; lr = -1; assign = 1; + } + break; + case dec_amg: + if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1)) + || ((cv = cvp[off=subtr_amg]) && (postpr=1))) { + right = &sv_yes; lr = -1; assign = 1; + } + break; + case bool__amg: + (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); + break; + case numer_amg: + (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); + break; + case string_amg: + (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); + break; + case not_amg: + (void)((cv = cvp[off=bool__amg]) + || (cv = cvp[off=numer_amg]) + || (cv = cvp[off=string_amg])); + postpr = 1; + break; + case copy_amg: + { + SV* ref=SvRV(left); + if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { + /* + * Just to be extra cautious. Maybe in some + * additional cases sv_setsv is safe, too. + */ + SV* newref = newSVsv(ref); + SvOBJECT_on(newref); + SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref)); + return newref; + } + } + break; + case abs_amg: + if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) + && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { + SV* nullsv=sv_2mortal(newSViv(0)); + if (off1==lt_amg) { + SV* lessp = amagic_call(left,nullsv, + lt_amg,AMGf_noright); + logic = SvTRUE(lessp); + } else { + SV* lessp = amagic_call(left,nullsv, + ncmp_amg,AMGf_noright); + logic = (SvNV(lessp) < 0); + } + if (logic) { + if (off==subtr_amg) { + right = left; + left = nullsv; + lr = 1; + } + } else { + return left; + } + } + break; + case neg_amg: + if (cv = cvp[off=subtr_amg]) { + right = left; + left = sv_2mortal(newSViv(0)); + lr = 1; + } + break; + default: + goto not_found; + } + if (!cv) goto not_found; + } else if (!(AMGf_noright & flags) && SvAMAGIC(right) + && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) + && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) + ? (amtp = (AMT*)mg->mg_ptr)->table + : (CV **) NULL)) + && (cv = cvp[off=method])) { /* Method for right + * argument found */ + lr=1; + } else if (((ocvp && oamtp->fallback > AMGfallNEVER + && (cvp=ocvp) && (lr = -1)) + || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) + && !(flags & AMGf_unary)) { + /* We look for substitution for + * comparison operations and + * concatenation */ + if (method==concat_amg || method==concat_ass_amg + || method==repeat_amg || method==repeat_ass_amg) { + return NULL; /* Delegate operation to string conversion */ + } + off = -1; + switch (method) { + case lt_amg: + case le_amg: + case gt_amg: + case ge_amg: + case eq_amg: + case ne_amg: + postpr = 1; off=ncmp_amg; break; + case slt_amg: + case sle_amg: + case sgt_amg: + case sge_amg: + case seq_amg: + case sne_amg: + postpr = 1; off=scmp_amg; break; + } + if (off != -1) cv = cvp[off]; + if (!cv) { + goto not_found; + } + } else { + not_found: /* No method found, either report or croak */ + if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ + notfound = 1; lr = -1; + } else if (cvp && (cv=cvp[nomethod_amg])) { + notfound = 1; lr = 1; + } else { + SV *msg; + if (off==-1) off=method; + msg = sv_2mortal(newSVpvf( + "Operation `%s': no method found,%sargument %s%s%s%s", + AMG_names[method + assignshift], + (flags & AMGf_unary ? " " : "\n\tleft "), + SvAMAGIC(left)? + "in overloaded package ": + "has no overloaded magic", + SvAMAGIC(left)? + HvNAME(SvSTASH(SvRV(left))): + "", + SvAMAGIC(right)? + ",\n\tright argument in overloaded package ": + (flags & AMGf_unary + ? "" + : ",\n\tright argument has no overloaded magic"), + SvAMAGIC(right)? + HvNAME(SvSTASH(SvRV(right))): + "")); + if (amtp && amtp->fallback >= AMGfallYES) { + DEBUG_o( deb("%s", SvPVX(msg)) ); + } else { + croak("%_", msg); + } + return NULL; + } + } + } + if (!notfound) { + DEBUG_o( deb( + "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", + AMG_names[off], + method+assignshift==off? "" : + " (initially `", + method+assignshift==off? "" : + AMG_names[method+assignshift], + method+assignshift==off? "" : "')", + flags & AMGf_unary? "" : + lr==1 ? " for right argument": " for left argument", + flags & AMGf_unary? " for argument" : "", + HvNAME(stash), + fl? ",\n\tassignment variant used": "") ); + /* Since we use shallow copy during assignment, we need + * to dublicate the contents, probably calling user-supplied + * version of copy operator + */ + if ((method + assignshift==off + && (assign || method==inc_amg || method==dec_amg)) + || inc_dec_ass) RvDEEPCP(left); + } + { + dSP; + BINOP myop; + SV* res; + bool oldcatch = CATCH_GET; - if (!gv) - return 0; + CATCH_SET(TRUE); + Zero(&myop, 1, BINOP); + myop.op_last = (OP *) &myop; + myop.op_next = Nullop; + myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; + + PUSHSTACK(SI_OVERLOAD); + ENTER; + SAVEOP(); + op = (OP *) &myop; + if (PERLDB_SUB && curstash != debstash) + op->op_private |= OPpENTERSUB_DB; + PUTBACK; + pp_pushmark(ARGS); - return GvIOn(gv); + EXTEND(SP, notfound + 5); + PUSHs(lr>0? right: left); + PUSHs(lr>0? left: right); + PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no )); + if (notfound) { + PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) ); + } + PUSHs((SV*)cv); + PUTBACK; + + if (op = pp_entersub(ARGS)) + runops(); + LEAVE; + SPAGAIN; + + res=POPs; + POPSTACK(); + CATCH_SET(oldcatch); + + if (postpr) { + int ans; + switch (method) { + case le_amg: + case sle_amg: + ans=SvIV(res)<=0; break; + case lt_amg: + case slt_amg: + ans=SvIV(res)<0; break; + case ge_amg: + case sge_amg: + ans=SvIV(res)>=0; break; + case gt_amg: + case sgt_amg: + ans=SvIV(res)>0; break; + case eq_amg: + case seq_amg: + ans=SvIV(res)==0; break; + case ne_amg: + case sne_amg: + ans=SvIV(res)!=0; break; + case inc_amg: + case dec_amg: + SvSetSV(left,res); return left; + case not_amg: + ans=!SvOK(res); break; + } + return boolSV(ans); + } else if (method==copy_amg) { + if (!SvROK(res)) { + croak("Copy method did not return a reference"); + } + return SvREFCNT_inc(SvRV(res)); + } else { + return res; + } + } } +#endif /* OVERLOAD */ +