/* gv.c
*
- * Copyright (c) 1991-1994, 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.
#include "EXTERN.h"
#include "perl.h"
-extern 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");
}
GV *
-gv_HVadd(gv)
-register GV *gv;
+gv_HVadd(register GV *gv)
{
if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
croak("Bad symbol for hash");
}
GV *
-gv_IOadd(gv)
-register GV *gv;
+gv_IOadd(register GV *gv)
{
if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
croak("Bad symbol for filehandle");
}
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, SVt_PVGV);
+ 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")))
+ if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm")))
GvMULTI_on(gv);
- if (perldb)
+ if (PERLDB_LINE)
hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L');
return gv;
}
void
-gv_init(gv, stash, name, len, multi)
-GV *gv;
-HV *stash;
-char *name;
-STRLEN len;
-int multi;
+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))
- Safefree(SvPVX(gv));
- Newz(602,gp, 1, GP);
+ 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);
- GvREFCNT(gv) = 1;
GvSV(gv) = NEWSV(72,0);
- GvLINE(gv) = curcop->cop_line;
- GvFILEGV(gv) = curcop->cop_filegv;
+ 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) = stash;
+ 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, sv_type)
-GV* gv;
-I32 sv_type;
+STATIC void
+gv_init_sv(GV *gv, I32 sv_type)
{
switch (sv_type) {
case SVt_PVIO:
}
GV *
-gv_fetchmeth(stash, name, len, level)
-HV* stash;
-char* name;
-STRLEN len;
-I32 level;
+gv_fetchmeth(HV *stash, char *name, STRLEN len, I32 level)
{
AV* av;
GV* topgv;
GV* gv;
GV** gvp;
- HV* lastchance;
CV* cv;
if (!stash)
return 0;
- if (level > 100)
- croak("Recursive inheritance detected");
-
- gvp = (GV**)hv_fetch(stash, name, len, TRUE);
+ 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)) );
- topgv = *gvp;
- if (SvTYPE(topgv) != SVt_PVGV)
- gv_init(topgv, stash, name, len, TRUE);
-
- if (cv=GvCV(topgv)) {
- if (GvCVGEN(topgv) >= sub_generation)
- return topgv; /* valid cached inheritance */
- if (!GvCVGEN(topgv)) { /* not an inheritance cache */
- return topgv;
- }
- else {
- /* stale cached entry, just junk it */
- GvCV(topgv) = cv = 0;
+
+ 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 */
}
- /* if cv is still set, we have to free it if we find something to cache */
- gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
- if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
+ 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);
- I32 items = AvFILL(av) + 1;
+ /* 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 (dowarn)
- warn("Can't locate package %s for @%s::ISA",
+ dTHR; /* just for ckWARN */
+ if (ckWARN(WARN_MISC))
+ warner(WARN_MISC, "Can't locate package %s for @%s::ISA",
SvPVX(sv), HvNAME(stash));
continue;
}
- gv = gv_fetchmeth(basestash, name, len, level + 1);
- if (gv) {
- if (cv) { /* junk old undef */
- assert(SvREFCNT(topgv) > 1);
- SvREFCNT_dec(topgv);
- SvREFCNT_dec(cv);
- }
- GvCV(topgv) = GvCV(gv); /* cache the CV */
- GvCVGEN(topgv) = sub_generation; /* valid for now */
- return gv;
- }
+ gv = gv_fetchmeth(basestash, name, len,
+ (level >= 0) ? level + 1 : level - 1);
+ if (gv)
+ goto gotcha;
}
}
- if (!level) {
+ /* 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 + 1)) {
- if (cv) { /* junk old undef */
- assert(SvREFCNT(topgv) > 1);
- SvREFCNT_dec(topgv);
- SvREFCNT_dec(cv);
+ 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;
}
- GvCV(topgv) = GvCV(gv); /* cache the CV */
- GvCVGEN(topgv) = sub_generation; /* valid for now */
return gv;
}
+ else if (topgv && GvREFCNT(topgv) == 1) {
+ /* cache the fact that the method is not defined */
+ GvCVGEN(topgv) = PL_sub_generation;
+ }
}
}
}
GV *
-gv_fetchmethod(stash, name)
-HV* stash;
-char* name;
+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 == ':' || *nend == '\'')
+ if (*nend == '\'')
nsplit = nend;
+ else if (*nend == ':' && *(nend + 1) == ':')
+ nsplit = ++nend;
}
if (nsplit) {
- char ch;
char *origname = name;
name = nsplit + 1;
- ch = *nsplit;
if (*nsplit == ':')
--nsplit;
- *nsplit = '\0';
- if (strEQ(origname,"SUPER")) {
- /* Degenerate case ->SUPER::method should really lookup in original stash */
- SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0));
- sv_catpvn(tmpstr, "::SUPER", 7);
- stash = gv_stashpvn(SvPVX(tmpstr),SvCUR(tmpstr),TRUE);
- *nsplit = ch;
- DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) );
- } else {
- stash = gv_stashpvn(origname, nsplit - origname, TRUE);
- *nsplit = ch;
+ 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);
+ gv = gv_fetchmeth(stash, name, nend - name, 0);
if (!gv) {
- /* Failed obvious case - look for SUPER as last element of stash's name */
- char *packname = HvNAME(stash);
- STRLEN len = strlen(packname);
- if (len >= 7 && strEQ(packname+len-7,"::SUPER")) {
- /* Now look for @.*::SUPER::ISA */
- GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
- len -= 7;
- if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) {
- /* No @ISA in package ending in ::SUPER - drop suffix
- and see if there is an @ISA there
- */
- HV *basestash;
- char ch = packname[len];
- AV *av;
- packname[len] = '\0';
- basestash = gv_stashpvn(packname, len, TRUE);
- packname[len] = ch;
- gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE);
- if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) {
- /* Okay found @ISA after dropping the SUPER, alias it */
- SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
- sv_catpvn(tmpstr, "::ISA", 5);
- gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV);
- if (gv) {
- GvAV(gv) = (AV*)SvREFCNT_inc(av);
- /* ... and re-try lookup */
- gv = gv_fetchmeth(stash, name, nend - name, 0);
- } else {
- croak("Cannot create %s::ISA",HvNAME(stash));
- }
- }
- }
- }
+ if (strEQ(name,"import"))
+ gv = (GV*)&PL_sv_yes;
+ else if (autoload)
+ gv = gv_autoload4(stash, name, nend - name, TRUE);
}
-
- if (!gv) {
- CV* cv;
-
- if (strEQ(name,"import") || strEQ(name,"unimport"))
- gv = (GV*)&sv_yes;
- else if (strNE(name, "AUTOLOAD")) {
- gv = gv_fetchmeth(stash, "AUTOLOAD", 8, 0);
- if (gv && (cv = GvCV(gv))) { /* One more chance... */
- SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0));
- sv_catpvn(tmpstr,"::", 2);
- sv_catpvn(tmpstr, name, nend - name);
- sv_setsv(GvSV(CvGV(cv)), tmpstr);
- if (tainting)
- sv_unmagic(GvSV(CvGV(cv)), 't');
+ 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)
+{
+ dTHR;
+ 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 (ckWARN(WARN_DEPRECATED) && !method &&
+ (GvCVGEN(gv) || GvSTASH(gv) != stash))
+ warner(WARN_DEPRECATED,
+ "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(name,create)
-char *name;
-I32 create;
+gv_stashpv(char *name, I32 create)
{
return gv_stashpvn(name, strlen(name), create);
}
HV*
-gv_stashpvn(name,namelen,create)
-char *name;
-U32 namelen;
-I32 create;
+gv_stashpvn(char *name, U32 namelen, I32 create)
{
- char tmpbuf[1203];
+ char smallbuf[256];
+ char *tmpbuf;
HV *stash;
GV *tmpgv;
- if (namelen > 1200) {
- namelen = 1200;
-#ifdef VMS
- warn("Weird package name \"%s\" truncated", name);
-#else
- warn("Weird package name \"%.*s...\" truncated", namelen, name);
-#endif
- }
+ 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);
+ tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV);
+ if (tmpbuf != smallbuf)
+ Safefree(tmpbuf);
if (!tmpgv)
return 0;
if (!GvHV(tmpgv))
}
HV*
-gv_stashsv(sv,create)
-SV *sv;
-I32 create;
+gv_stashsv(SV *sv, I32 create)
{
register char *ptr;
STRLEN len;
GV *
-gv_fetchpv(nambeg,add,sv_type)
-char *nambeg;
-I32 add;
-I32 sv_type;
+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;
- bool global = FALSE;
- char *tmpbuf;
+ U32 add_gvflags = 0;
if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */
name++;
(*namend == ':' && namend[1] == ':'))
{
if (!stash)
- stash = defstash;
+ stash = PL_defstash;
if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */
return Nullgv;
len = namend - name;
if (len > 0) {
- New(601, tmpbuf, len+3, char);
+ 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);
- Safefree(tmpbuf);
- if (!gvp || *gvp == (GV*)&sv_undef)
+ 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;
- gv = *gvp;
-
- if (SvTYPE(gv) == SVt_PVGV)
- GvMULTI_on(gv);
- else if (!add)
- return Nullgv;
- else
- gv_init(gv, stash, nambeg, namend - nambeg, (add & 2));
if (!(stash = GvHV(gv)))
stash = GvHV(gv) = newHV();
namend++;
name = namend;
if (!*name)
- return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE);
+ return gv ? gv : (GV*)*hv_fetch(PL_defstash, "main::", 6, TRUE);
}
}
len = namend - name;
/* No stash in name, so see how we can default */
if (!stash) {
- if (isIDFIRST(*name)) {
+ if (isIDFIRST(*name)
+ || (IN_UTF8 && ((*name & 0xc0) == 0xc0) && isIDFIRST_utf8((U8*)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;
- }
+ 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") ))
+ 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) &&
+ 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 &&
{
gvp = (GV**)hv_fetch(stash,name,len,0);
if (!gvp ||
- *gvp == (GV*)&sv_undef ||
+ *gvp == (GV*)&PL_sv_undef ||
SvTYPE(*gvp) != SVt_PVGV)
{
stash = 0;
sv_type == SVt_PVAV ? '@' :
sv_type == SVt_PVHV ? '%' : '$',
name);
- if (GvCV(*gvp))
+ if (GvCVu(*gvp))
warn("(Did you mean &%s instead?)\n", name);
stash = 0;
}
}
}
else
- stash = curcop->cop_stash;
+ stash = PL_curcop->cop_stash;
}
else
- stash = defstash;
+ stash = PL_defstash;
}
/* By this point we should have a stash and a name */
if (!stash) {
- if (add) {
- warn("Global symbol \"%s\" requires explicit package name", name);
- ++error_count;
- stash = curstash ? curstash : defstash; /* avoid core dumps */
- }
- else
+ if (!add)
return Nullgv;
+ {
+ 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*)&sv_undef)
+ if (!gvp || *gvp == (GV*)&PL_sv_undef)
return Nullgv;
gv = *gvp;
if (SvTYPE(gv) == SVt_PVGV) {
gv_init_sv(gv, sv_type);
}
return gv;
+ } else if (add & GV_NOINIT) {
+ return gv;
}
/* Adding a new symbol */
- if (add & 4)
+ if (add & GV_ADDWARN)
warn("Had to create %s unexpectedly", nambeg);
- gv_init(gv, stash, name, len, add & 2);
+ 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) {
AV* av = GvAVn(gv);
GvMULTI_on(gv);
sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
- if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1)
+ /* 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));
if (strEQ(name, "OVERLOAD")) {
HV* hv = GvHVn(gv);
GvMULTI_on(gv);
- sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0);
+ hv_magic(hv, gv, 'A');
}
break;
#endif /* OVERLOAD */
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++) {
+ PL_siggv = gv;
+ GvMULTI_on(PL_siggv);
+ hv = GvHVn(PL_siggv);
+ hv_magic(hv, PL_siggv, 'S');
+ for(i=1;PL_sig_name[i];i++) {
SV ** init;
- init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1);
+ init=hv_fetch(hv,PL_sig_name[i],strlen(PL_sig_name[i]),1);
if(init)
- sv_setsv(*init,&sv_undef);
- psig_ptr[i] = 0;
- psig_name[i] = 0;
+ sv_setsv(*init,&PL_sv_undef);
+ PL_psig_ptr[i] = 0;
+ PL_psig_name[i] = 0;
}
- /* initialize signal stack */
- signalstack = newAV();
- AvREAL_off(signalstack);
- av_extend(signalstack, 30);
- av_fill(signalstack, 0);
}
break;
case '&':
if (len > 1)
break;
- ampergv = gv;
- sawampersand = TRUE;
+ PL_ampergv = gv;
+ PL_sawampersand = TRUE;
goto ro_magicalize;
case '`':
if (len > 1)
break;
- leftgv = gv;
- sawampersand = TRUE;
+ PL_leftgv = gv;
+ PL_sawampersand = TRUE;
goto ro_magicalize;
case '\'':
if (len > 1)
break;
- rightgv = gv;
- sawampersand = TRUE;
+ PL_rightgv = gv;
+ PL_sawampersand = TRUE;
goto ro_magicalize;
case ':':
if (len > 1)
break;
- sv_setpv(GvSV(gv),chopset);
+ sv_setpv(GvSV(gv),PL_chopset);
goto magicalize;
+ case '?':
+ if (len > 1)
+ break;
+#ifdef COMPLEX_STATUS
+ (void)SvUPGRADE(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 '-':
+ if (len > 1)
+ break;
+ else {
+ AV* av = GvAVn(gv);
+ sv_magic((SV*)av, Nullsv, 'D', Nullch, 0);
+ }
+ goto magicalize;
case '#':
case '*':
- if (dowarn && len == 1 && sv_type == SVt_PV)
- warn("Use of $%s is deprecated", name);
+ if (ckWARN(WARN_DEPRECATED) && len == 1 && sv_type == SVt_PV)
+ warner(WARN_DEPRECATED, "Use of $%s is deprecated", name);
/* FALL THROUGH */
case '[':
- case '!':
- case '?':
case '^':
case '~':
case '=':
- case '-':
case '%':
case '.':
case '(':
case '/':
case '|':
case '\001':
+ case '\002':
+ case '\003':
case '\004':
case '\005':
case '\006':
case '\010':
+ case '\011': /* NOT \t in EBCDIC */
case '\017':
- case '\t':
case '\020':
case '\024':
case '\027':
if (len > 1)
break;
goto magicalize;
+ case '\023':
+ if (len > 1)
+ break;
+ goto ro_magicalize;
case '+':
+ if (len > 1)
+ break;
+ else {
+ AV* av = GvAVn(gv);
+ sv_magic((SV*)av, (SV*)av, 'D', Nullch, 0);
+ }
+ /* FALL THROUGH */
case '1':
case '2':
case '3':
if (len > 1)
break;
sv_setpv(GvSV(gv),"\f");
- formfeed = GvSV(gv);
+ PL_formfeed = GvSV(gv);
break;
case ';':
if (len > 1)
break;
case ']':
if (len == 1) {
- SV *sv;
- sv = GvSV(gv);
- sv_upgrade(sv, SVt_PVNV);
- sv_setpv(sv, patchlevel);
+ SV *sv = GvSV(gv);
+ (void)SvUPGRADE(sv, SVt_PVNV);
+ sv_setpv(sv, PL_patchlevel);
+ (void)sv_2nv(sv);
+ SvREADONLY_on(sv);
}
break;
}
}
void
-gv_fullname3(sv, gv, prefix)
-SV *sv;
-GV *gv;
-char *prefix;
+gv_fullname3(SV *sv, GV *gv, char *prefix)
{
HV *hv = GvSTASH(gv);
if (!hv) {
}
void
-gv_efullname3(sv, gv, prefix)
-SV *sv;
-GV *gv;
-char *prefix;
+gv_efullname3(SV *sv, GV *gv, char *prefix)
{
GV *egv = GvEGV(gv);
if (!egv)
/* XXX compatibility with versions <= 5.003. */
void
-gv_fullname(sv,gv)
-SV *sv;
-GV *gv;
+gv_fullname(SV *sv, GV *gv)
{
gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
}
/* XXX compatibility with versions <= 5.003. */
void
-gv_efullname(sv,gv)
-SV *sv;
-GV *gv;
+gv_efullname(SV *sv, GV *gv)
{
gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
}
IO *
-newIO()
+newIO(void)
{
+ dTHR;
IO *io;
GV *iogv;
sv_upgrade((SV *)io,SVt_PVIO);
SvREFCNT(io) = 1;
SvOBJECT_on(io);
- iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
+ iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV);
+ /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */
+ if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv))))
+ iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv));
return io;
}
void
-gv_check(stash)
-HV* stash;
+gv_check(HV *stash)
{
+ dTHR;
register HE *entry;
register I32 i;
register GV *gv;
if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
(gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv))
{
- if (hv != defstash)
+ if (hv != PL_defstash)
gv_check(hv); /* nested package */
}
else if (isALPHA(*HeKEY(entry))) {
gv = (GV*)HeVAL(entry);
- if (GvMULTI(gv))
+ if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv))
continue;
- curcop->cop_line = GvLINE(gv);
+ PL_curcop->cop_line = GvLINE(gv);
filegv = GvFILEGV(gv);
- curcop->cop_filegv = filegv;
+ PL_curcop->cop_filegv = filegv;
if (filegv && GvMULTI(filegv)) /* Filename began with slash */
continue;
- warn("Name \"%s::%s\" used only once: possible typo",
+ warner(WARN_ONCE,
+ "Name \"%s::%s\" used only once: possible typo",
HvNAME(stash), GvNAME(gv));
}
}
}
GV *
-newGVgen(pack)
-char *pack;
+newGVgen(char *pack)
{
- (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++);
- return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV);
+ 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_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* gv;
+gp_free(GV *gv)
{
GP* gp;
CV* cv;
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;
SvREFCNT_dec(gp->gp_av);
SvREFCNT_dec(gp->gp_hv);
SvREFCNT_dec(gp->gp_io);
- if ((cv = gp->gp_cv) && !GvCVGEN(gv))
- SvREFCNT_dec(cv);
+ SvREFCNT_dec(gp->gp_cv);
SvREFCNT_dec(gp->gp_form);
Safefree(gp);
/* Updates and caches the CV's */
bool
-Gv_AMupdate(stash)
-HV* stash;
+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: NULL;
+ AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL;
+ AMT amt;
- if (mg && (amtp=((AMT*)(mg->mg_ptr)))->was_ok_am == amagic_generation &&
- amtp->was_ok_sub == sub_generation)
- return HV_AMAGIC(stash)? TRUE: FALSE;
- gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE);
- if (amtp && amtp->table) {
+ 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*2;i++) {
+ for (i=1; i<NofAMmeth; i++) {
if (amtp->table[i]) {
SvREFCNT_dec(amtp->table[i]);
}
DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
- if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) {
+ 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;
- AMT amt;
SV* sv;
SV** svp;
- GV** gvp;
-/* if (*(svp)==(SV*)amagic_generation && *(svp+1)==(SV*)sub_generation) {
- DEBUG_o( deb("Overload magic in package %s up-to-date\n",HvNAME(stash))
-);
- return HV_AMAGIC(stash)? TRUE: FALSE;
- }*/
+ /* Work with "fallback" key, which we assume to be first in PL_AMG_names */
- amt.was_ok_am=amagic_generation;
- amt.was_ok_sub=sub_generation;
- amt.fallback=AMGfallNO;
-
- /* 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 (( cp = (char *)PL_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*2;i++) {
- cv=0;
-
- if ( (cp=((char**)(*AMG_names))[i]) ) {
- svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE);
- if (svp && ((sv = *svp) != &sv_undef)) {
+ for (i = 1; i < NofAMmeth; i++) {
+ cv = 0;
+ cp = (char *)PL_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, na));
+ gv = gv_fetchmethod(stash, SvPV(sv, PL_na));
if (gv) cv = GvCV(gv);
break;
}
/* FALL THROUGH */
case SVt_PVHV:
case SVt_PVAV:
- die("Not a subroutine reference in overload table");
+ croak("Not a subroutine reference in overload table");
return FALSE;
case SVt_PVCV:
- cv = (CV*)sv;
- break;
+ cv = (CV*)sv;
+ break;
case SVt_PVGV:
- if (!(cv = GvCV((GV*)sv)))
- cv = sv_2cv(sv, &stash, &gv, TRUE);
- break;
+ if (!(cv = GvCVu((GV*)sv)))
+ cv = sv_2cv(sv, &stash, &gv, TRUE);
+ break;
}
if (cv) filled=1;
else {
- die("Method for operation %s not found in package %.256s during blessing\n",
+ croak("Method for operation %s not found in package %.256s during blessing\n",
cp,HvNAME(stash));
return FALSE;
}
}
- }
- amt.table[i]=(CV*)SvREFCNT_inc(cv);
+#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 PL_AMG_names */
+
+ if ( cp = PL_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 = PL_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);
}
- sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(amt));
if (filled) {
-/* HV_badAMAGIC_off(stash);*/
- HV_AMAGIC_on(stash);
+ AMT_AMAGIC_on(&amt);
+ sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT));
return TRUE;
}
}
-/*HV_badAMAGIC_off(stash);*/
- HV_AMAGIC_off(stash);
+ /* Here we have no table: */
+ no_table:
+ AMT_AMAGIC_off(&amt);
+ sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
return FALSE;
}
-/* During call to this subroutine stack can be reallocated. It is
- * advised to call SPAGAIN macro in your code after call */
-
SV*
-amagic_call(left,right,method,flags)
-SV* left;
-SV* right;
-int method;
-int flags;
+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, inc_dec_ass=0, assignshift=assign?1:0;
+ 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 = ((oamtp=amtp=(AMT*)mg->mg_ptr)->table))
+ && (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 */
int logic;
/* look for substituted methods */
+ /* In all the covered cases we should be called with assign==0. */
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;
+ 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:
- 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;
+ 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:
break;
case copy_amg:
{
- SV* ref=SvRV(left);
- if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be
- * extra
- * causious,
- * maybe in some
- * additional
- * cases sv_setsv
- * is safe too */
- SV* newref = newSVsv(ref);
+ /*
+ * 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(ref));
+ SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef));
return newref;
}
}
lr = 1;
}
break;
+ case iter_amg: /* XXXX Eventually should do to_gv. */
+ case to_sv_amg:
+ case to_av_amg:
+ case to_hv_amg:
+ case to_gv_amg:
+ case to_cv_amg:
+ /* FAIL safe */
+ return NULL; /* Delegate operation to standard mechanisms. */
+ 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 = ((amtp=(AMT*)mg->mg_ptr)->table))
+ && (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;
&& !(flags & AMGf_unary)) {
/* We look for substitution for
* comparison operations and
- * concatendation */
+ * concatenation */
if (method==concat_amg || method==concat_ass_amg
|| method==repeat_amg || method==repeat_ass_amg) {
return NULL; /* Delegate operation to string conversion */
goto not_found;
}
} else {
- not_found: /* No method found, either report or die */
+ 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 {
- if (off==-1) off=method;
- sprintf(buf, "Operation `%s': no method found,\n\tleft argument %s%.256s,\n\tright argument %s%.256s",
- ((char**)AMG_names)[method + assignshift],
+ SV *msg;
+ if (off==-1) off=method;
+ msg = sv_2mortal(newSVpvf(
+ "Operation `%s': no method found,%sargument %s%s%s%s",
+ PL_AMG_names[method + assignshift],
+ (flags & AMGf_unary ? " " : "\n\tleft "),
SvAMAGIC(left)?
"in overloaded package ":
"has no overloaded magic",
HvNAME(SvSTASH(SvRV(left))):
"",
SvAMAGIC(right)?
- "in overloaded package ":
- "has no overloaded magic",
+ ",\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(buf) );
+ DEBUG_o( deb("%s", SvPVX(msg)) );
} else {
- die(buf);
+ 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 %.256s%s\n",
- ((char**)AMG_names)[off],
+ DEBUG_o( deb(
+ "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n",
+ PL_AMG_names[off],
method+assignshift==off? "" :
" (initially `",
method+assignshift==off? "" :
- ((char**)AMG_names)[method+assignshift],
+ PL_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);
- }
+ /* 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_KNOW|OPf_STACKED;
+ myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
+ PUSHSTACKi(PERLSI_OVERLOAD);
ENTER;
- SAVESPTR(op);
- op = (OP *) &myop;
- if (perldb && curstash != debstash)
- op->op_private |= OPpENTERSUB_DB;
+ SAVEOP();
+ PL_op = (OP *) &myop;
+ if (PERLDB_SUB && PL_curstash != PL_debstash)
+ PL_op->op_private |= OPpENTERSUB_DB;
PUTBACK;
- pp_pushmark();
+ pp_pushmark(ARGS);
- EXTEND(sp, notfound + 5);
+ EXTEND(SP, notfound + 5);
PUSHs(lr>0? right: left);
PUSHs(lr>0? left: right);
- PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no));
+ 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_2mortal(newSVpv((char *)PL_AMG_names[method + assignshift],0)));
}
PUSHs((SV*)cv);
PUTBACK;
- if (op = pp_entersub())
- runops();
+ if (PL_op = pp_entersub(ARGS))
+ CALLRUNOPS();
LEAVE;
SPAGAIN;
res=POPs;
PUTBACK;
-
- if (notfound) {
- /* sv_2mortal(res); */
- return NULL;
- }
+ POPSTACK;
+ CATCH_SET(oldcatch);
if (postpr) {
int ans;
ans=SvIV(res)!=0; break;
case inc_amg:
case dec_amg:
- SvSetSV(left,res); return res; break;
+ SvSetSV(left,res); return left;
case not_amg:
-ans=!SvOK(res); break;
+ ans=!SvOK(res); break;
}
- return ans? &sv_yes: &sv_no;
+ return boolSV(ans);
} else if (method==copy_amg) {
if (!SvROK(res)) {
- die("Copy method did not return a reference");
+ croak("Copy method did not return a reference");
}
return SvREFCNT_inc(SvRV(res));
} else {
}
}
#endif /* OVERLOAD */
+
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