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-rw-r--r--contrib/perl5/gv.c1448
1 files changed, 1448 insertions, 0 deletions
diff --git a/contrib/perl5/gv.c b/contrib/perl5/gv.c
new file mode 100644
index 000000000000..0d96ffa97c3e
--- /dev/null
+++ b/contrib/perl5/gv.c
@@ -0,0 +1,1448 @@
+/* gv.c
+ *
+ * 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.
+ *
+ */
+
+/*
+ * '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"
+
+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(register GV *gv)
+{
+ if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
+ croak("Bad symbol for hash");
+ if (!GvHV(gv))
+ 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(char *name)
+{
+ dTHR;
+ char smallbuf[256];
+ char *tmpbuf;
+ STRLEN tmplen;
+ GV *gv;
+
+ 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(PL_defstash, tmpbuf, tmplen, TRUE);
+ if (!isGV(gv))
+ gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE);
+ if (tmpbuf != smallbuf)
+ Safefree(tmpbuf);
+ sv_setpv(GvSV(gv), name);
+ 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) = PL_curcop->cop_line;
+ GvFILEGV(gv) = PL_curcop->cop_filegv;
+ GvCVGEN(gv) = 0;
+ 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. */
+ SvIOK_off(gv);
+ ENTER;
+ start_subparse(0,0); /* Create CV in compcv. */
+ GvCV(gv) = PL_compcv;
+ LEAVE;
+
+ PL_sub_generation++;
+ CvGV(GvCV(gv)) = (GV*)SvREFCNT_inc(gv);
+ CvFILEGV(GvCV(gv)) = PL_curcop->cop_filegv;
+ CvSTASH(GvCV(gv)) = PL_curstash;
+#ifdef USE_THREADS
+ CvOWNER(GvCV(gv)) = 0;
+ if (!CvMUTEXP(GvCV(gv)))
+ 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_fetchmeth(HV *stash, char *name, STRLEN len, I32 level)
+{
+ AV* av;
+ GV* topgv;
+ GV* gv;
+ GV** gvp;
+ CV* cv;
+
+ if (!stash)
+ return 0;
+ if ((level > 100) || (level < -100))
+ croak("Recursive inheritance detected while looking for method '%s' in package '%s'",
+ name, HvNAME(stash));
+
+ 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) == PL_sub_generation)
+ return topgv;
+ /* Stale cached entry: junk it */
+ SvREFCNT_dec(cv);
+ GvCV(topgv) = cv = Nullcv;
+ GvCVGEN(topgv) = 0;
+ }
+ else if (GvCVGEN(topgv) == PL_sub_generation)
+ return 0; /* cache indicates sub doesn't exist */
+ }
+
+ gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE);
+ av = (gvp && (gv = *gvp) && gv != (GV*)&PL_sv_undef) ? GvAV(gv) : Nullav;
+
+ /* 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*)&PL_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);
+ /* NOTE: No support for tied ISA */
+ I32 items = AvFILLp(av) + 1;
+ while (items--) {
+ SV* sv = *svp++;
+ HV* basestash = gv_stashsv(sv, FALSE);
+ if (!basestash) {
+ if (PL_dowarn)
+ warn("Can't locate package %s for @%s::ISA",
+ SvPVX(sv), HvNAME(stash));
+ continue;
+ }
+ 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) = PL_sub_generation;
+ }
+ return gv;
+ }
+ else if (topgv && GvREFCNT(topgv) == 1) {
+ /* cache the fact that the method is not defined */
+ GvCVGEN(topgv) = PL_sub_generation;
+ }
+ }
+ }
+
+ return 0;
+}
+
+GV *
+gv_fetchmethod(HV *stash, char *name)
+{
+ 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(PL_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*)&PL_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 (PL_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;
+ I32 len;
+ register char *namend;
+ 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 = PL_defstash;
+ if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
+ return Nullgv;
+
+ len = namend - name;
+ if (len > 0) {
+ char smallbuf[256];
+ char *tmpbuf;
+
+ if (len + 3 < sizeof smallbuf)
+ tmpbuf = smallbuf;
+ 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*)&PL_sv_undef) {
+ if (SvTYPE(gv) != SVt_PVGV)
+ gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI));
+ else
+ GvMULTI_on(gv);
+ }
+ if (tmpbuf != smallbuf)
+ Safefree(tmpbuf);
+ if (!gv || gv == (GV*)&PL_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(PL_defstash, "main::", 6, TRUE);
+ }
+ }
+ 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 == 'S' && (
+ strEQ(name, "SIG") ||
+ strEQ(name, "STDIN") ||
+ strEQ(name, "STDOUT") ||
+ strEQ(name, "STDERR")))
+ global = TRUE;
+ else if (*name == 'I' && strEQ(name, "INC"))
+ global = TRUE;
+ else 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 = PL_defstash;
+ else if ((COP*)PL_curcop == &PL_compiling) {
+ stash = PL_curstash;
+ if (add && (PL_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*)&PL_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 = PL_curcop->cop_stash;
+ }
+ else
+ stash = PL_defstash;
+ }
+
+ /* By this point we should have a stash and a name */
+
+ if (!stash) {
+ if (!add)
+ return Nullgv;
+ if (add & ~GV_ADDMULTI) {
+ 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);
+ }
+ ++PL_error_count;
+ stash = PL_curstash ? PL_curstash : PL_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);
+ }
+
+ if (!SvREFCNT(stash)) /* symbol table under destruction */
+ return Nullgv;
+
+ gvp = (GV**)hv_fetch(stash,name,len,add);
+ if (!gvp || *gvp == (GV*)&PL_sv_undef)
+ return Nullgv;
+ gv = *gvp;
+ if (SvTYPE(gv) == SVt_PVGV) {
+ if (add) {
+ GvMULTI_on(gv);
+ gv_init_sv(gv, sv_type);
+ }
+ return 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;
+ PL_siggv = gv;
+ GvMULTI_on(PL_siggv);
+ hv = GvHVn(PL_siggv);
+ hv_magic(hv, PL_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,&PL_sv_undef);
+ psig_ptr[i] = 0;
+ psig_name[i] = 0;
+ }
+ }
+ break;
+
+ case '&':
+ if (len > 1)
+ break;
+ PL_ampergv = gv;
+ PL_sawampersand = TRUE;
+ goto ro_magicalize;
+
+ case '`':
+ if (len > 1)
+ break;
+ PL_leftgv = gv;
+ PL_sawampersand = TRUE;
+ goto ro_magicalize;
+
+ case '\'':
+ if (len > 1)
+ break;
+ PL_rightgv = gv;
+ PL_sawampersand = TRUE;
+ goto ro_magicalize;
+
+ case ':':
+ if (len > 1)
+ break;
+ sv_setpv(GvSV(gv),PL_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 && PL_curcop != &PL_compiling) {
+ 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 available");
+ }
+ }
+ goto magicalize;
+ case '#':
+ case '*':
+ if (PL_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 '\011': /* NOT \t in EBCDIC */
+ case '\017':
+ 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");
+ PL_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, PL_patchlevel);
+ (void)sv_2nv(sv);
+ SvREADONLY_on(sv);
+ }
+ break;
+ }
+ return gv;
+}
+
+void
+gv_fullname3(SV *sv, GV *gv, char *prefix)
+{
+ HV *hv = GvSTASH(gv);
+ if (!hv) {
+ SvOK_off(sv);
+ return;
+ }
+ sv_setpv(sv, prefix ? prefix : "");
+ sv_catpv(sv,HvNAME(hv));
+ sv_catpvn(sv,"::", 2);
+ sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
+}
+
+void
+gv_efullname3(SV *sv, GV *gv, char *prefix)
+{
+ GV *egv = GvEGV(gv);
+ if (!egv)
+ egv = gv;
+ gv_fullname3(sv, egv, prefix);
+}
+
+/* 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(void)
+{
+ dTHR;
+ IO *io;
+ GV *iogv;
+
+ 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(HV *stash)
+{
+ dTHR;
+ register HE *entry;
+ register I32 i;
+ register GV *gv;
+ HV *hv;
+ GV *filegv;
+
+ 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 != PL_defstash)
+ gv_check(hv); /* nested package */
+ }
+ else if (isALPHA(*HeKEY(entry))) {
+ gv = (GV*)HeVAL(entry);
+ if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv))
+ continue;
+ PL_curcop->cop_line = GvLINE(gv);
+ filegv = GvFILEGV(gv);
+ PL_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(char *pack)
+{
+ return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)PL_gensym++),
+ TRUE, SVt_PVGV);
+}
+
+/* hopefully this is only called on local symbol table entries */
+
+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 */
+ PL_sub_generation++;
+ }
+ }
+ return gp;
+}
+
+void
+gp_free(GV *gv)
+{
+ GP* gp;
+ CV* cv;
+
+ if (!gv || !(gp = GvGP(gv)))
+ return;
+ if (gp->gp_refcnt == 0) {
+ warn("Attempt to free unreferenced glob pointers");
+ return;
+ }
+ if (gp->gp_cv) {
+ /* Deleting the name of a subroutine invalidates method cache */
+ PL_sub_generation++;
+ }
+ if (--gp->gp_refcnt > 0) {
+ if (gp->gp_egv == gv)
+ gp->gp_egv = 0;
+ return;
+ }
+
+ 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;
+}
+
+#if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
+#define MICROPORT
+#endif
+
+#ifdef MICROPORT /* Microport 2.4 hack */
+AV *GvAVn(gv)
+register GV *gv;
+{
+ if (GvGP(gv)->gp_av)
+ return GvGP(gv)->gp_av;
+ else
+ return GvGP(gv_AVadd(gv))->gp_av;
+}
+
+HV *GvHVn(gv)
+register GV *gv;
+{
+ if (GvGP(gv)->gp_hv)
+ return GvGP(gv)->gp_hv;
+ else
+ return GvGP(gv_HVadd(gv))->gp_hv;
+}
+#endif /* Microport 2.4 hack */
+
+#ifdef OVERLOAD
+/* Updates and caches the CV's */
+
+bool
+Gv_AMupdate(HV *stash)
+{
+ 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 == PL_amagic_generation
+ && amtp->was_ok_sub == PL_sub_generation)
+ return AMT_AMAGIC(amtp);
+ if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */
+ int i;
+ for (i=1; i<NofAMmeth; i++) {
+ if (amtp->table[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 = PL_amagic_generation;
+ amt.was_ok_sub = PL_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*)&PL_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) != &PL_sv_undef)) {
+ switch (SvTYPE(sv)) {
+ default:
+ if (!SvROK(sv)) {
+ if (!SvOK(sv)) break;
+ gv = gv_fetchmethod(stash, SvPV(sv, PL_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), PL_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;
+}
+
+SV*
+amagic_call(SV *left, SV *right, int method, int flags)
+{
+ 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, force_cpy = 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;
+
+ /* look for substituted methods */
+ /* In all the covered cases we should be called with assign==0. */
+ switch (method) {
+ case inc_amg:
+ force_cpy = 1;
+ if ((cv = cvp[off=add_ass_amg])
+ || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) {
+ right = &PL_sv_yes; lr = -1; assign = 1;
+ }
+ break;
+ case dec_amg:
+ force_cpy = 1;
+ if ((cv = cvp[off = subtr_ass_amg])
+ || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) {
+ right = &PL_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 causes confusion with the interpreter variable of
+ * the same name
+ */
+ SV* tmpRef=SvRV(left);
+ if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) {
+ /*
+ * Just to be extra cautious. Maybe in some
+ * additional cases sv_setsv is safe, too.
+ */
+ SV* newref = newSVsv(tmpRef);
+ SvOBJECT_on(newref);
+ SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef));
+ 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;
+ }
+ force_cpy = force_cpy || assign;
+ }
+ }
+ 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
+ */
+ /* We need to copy in following cases:
+ * a) Assignment form was called.
+ * assignshift==1, assign==T, method + 1 == off
+ * b) Increment or decrement, called directly.
+ * assignshift==0, assign==0, method + 0 == off
+ * c) Increment or decrement, translated to assignment add/subtr.
+ * assignshift==0, assign==T,
+ * force_cpy == T
+ * d) Increment or decrement, translated to nomethod.
+ * assignshift==0, assign==0,
+ * force_cpy == T
+ * e) Assignment form translated to nomethod.
+ * assignshift==1, assign==T, method + 1 != off
+ * force_cpy == T
+ */
+ /* off is method, method+assignshift, or a result of opcode substitution.
+ * In the latter case assignshift==0, so only notfound case is important.
+ */
+ if (( (method + assignshift == off)
+ && (assign || (method == inc_amg) || (method == dec_amg)))
+ || force_cpy)
+ RvDEEPCP(left);
+ {
+ dSP;
+ BINOP myop;
+ SV* res;
+ bool oldcatch = CATCH_GET;
+
+ CATCH_SET(TRUE);
+ Zero(&myop, 1, BINOP);
+ myop.op_last = (OP *) &myop;
+ myop.op_next = Nullop;
+ myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
+
+ PUSHSTACKi(PERLSI_OVERLOAD);
+ ENTER;
+ SAVEOP();
+ PL_op = (OP *) &myop;
+ if (PERLDB_SUB && PL_curstash != PL_debstash)
+ PL_op->op_private |= OPpENTERSUB_DB;
+ PUTBACK;
+ pp_pushmark(ARGS);
+
+ EXTEND(SP, notfound + 5);
+ PUSHs(lr>0? right: left);
+ PUSHs(lr>0? left: right);
+ PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no ));
+ if (notfound) {
+ PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) );
+ }
+ PUSHs((SV*)cv);
+ PUTBACK;
+
+ if (PL_op = pp_entersub(ARGS))
+ CALLRUNOPS();
+ 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 */
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-22 12:20:14 +0000