/* gv.c
*
- * Copyright (c) 1991-1997, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* laughed Pippin.
*/
+/*
+=head1 GV Functions
+*/
+
#include "EXTERN.h"
+#define PERL_IN_GV_C
#include "perl.h"
GV *
-gv_AVadd(register GV *gv)
+Perl_gv_AVadd(pTHX_ register GV *gv)
{
if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
- croak("Bad symbol for array");
+ Perl_croak(aTHX_ "Bad symbol for array");
if (!GvAV(gv))
GvAV(gv) = newAV();
return gv;
}
GV *
-gv_HVadd(register GV *gv)
+Perl_gv_HVadd(pTHX_ register GV *gv)
{
if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
- croak("Bad symbol for hash");
+ Perl_croak(aTHX_ "Bad symbol for hash");
if (!GvHV(gv))
GvHV(gv) = newHV();
return gv;
}
GV *
-gv_IOadd(register GV *gv)
+Perl_gv_IOadd(pTHX_ register GV *gv)
{
if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
- croak("Bad symbol for filehandle");
- if (!GvIOp(gv))
+ Perl_croak(aTHX_ "Bad symbol for filehandle");
+ if (!GvIOp(gv)) {
+#ifdef GV_UNIQUE_CHECK
+ if (GvUNIQUE(gv)) {
+ Perl_croak(aTHX_ "Bad symbol for filehandle (GV is unique)");
+ }
+#endif
GvIOp(gv) = newIO();
+ }
return gv;
}
GV *
-gv_fetchfile(char *name)
+Perl_gv_fetchfile(pTHX_ const char *name)
{
- dTHR;
char smallbuf[256];
char *tmpbuf;
STRLEN tmplen;
GV *gv;
+ if (!PL_defstash)
+ return Nullgv;
+
tmplen = strlen(name) + 2;
if (tmplen < sizeof smallbuf)
tmpbuf = smallbuf;
else
New(603, tmpbuf, tmplen + 1, char);
+ /* This is where the debugger's %{"::_<$filename"} hash is created */
tmpbuf[0] = '_';
tmpbuf[1] = '<';
strcpy(tmpbuf + 2, name);
gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE);
- if (!isGV(gv))
+ if (!isGV(gv)) {
gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE);
+ sv_setpv(GvSV(gv), name);
+ if (PERLDB_LINE)
+ hv_magic(GvHVn(gv_AVadd(gv)), Nullgv, PERL_MAGIC_dbfile);
+ }
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)
+Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi)
{
- dTHR;
register GP *gp;
bool doproto = SvTYPE(gv) > SVt_NULL;
char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL;
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;
+ GvLINE(gv) = CopLINE(PL_curcop);
+ GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
GvCVGEN(gv) = 0;
GvEGV(gv) = gv;
- sv_magic((SV*)gv, (SV*)gv, '*', name, len);
+ sv_magic((SV*)gv, (SV*)gv, PERL_MAGIC_glob, Nullch, 0);
GvSTASH(gv) = (HV*)SvREFCNT_inc(stash);
GvNAME(gv) = savepvn(name, len);
GvNAMELEN(gv) = len;
LEAVE;
PL_sub_generation++;
- CvGV(GvCV(gv)) = (GV*)SvREFCNT_inc(gv);
- CvFILEGV(GvCV(gv)) = PL_curcop->cop_filegv;
+ CvGV(GvCV(gv)) = gv;
+ CvFILE_set_from_cop(GvCV(gv), PL_curcop);
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)
+S_gv_init_sv(pTHX_ GV *gv, I32 sv_type)
{
switch (sv_type) {
case SVt_PVIO:
}
}
+/*
+=for apidoc gv_fetchmeth
+
+Returns the glob with the given C<name> and a defined subroutine or
+C<NULL>. The glob lives in the given C<stash>, or in the stashes
+accessible via @ISA and UNIVERSAL::.
+
+The argument C<level> should be either 0 or -1. If C<level==0>, as a
+side-effect creates a glob with the given C<name> in the given C<stash>
+which in the case of success contains an alias for the subroutine, and sets
+up caching info for this glob. Similarly for all the searched stashes.
+
+This function grants C<"SUPER"> token as a postfix of the stash name. The
+GV returned from C<gv_fetchmeth> may be a method cache entry, which is not
+visible to Perl code. So when calling C<call_sv>, you should not use
+the GV directly; instead, you should use the method's CV, which can be
+obtained from the GV with the C<GvCV> macro.
+
+=cut
+*/
+
GV *
-gv_fetchmeth(HV *stash, char *name, STRLEN len, I32 level)
+Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level)
{
AV* av;
GV* topgv;
GV** gvp;
CV* cv;
- if (!stash)
- return 0;
+ /* UNIVERSAL methods should be callable without a stash */
+ if (!stash) {
+ level = -1; /* probably appropriate */
+ if(!(stash = gv_stashpvn("UNIVERSAL", 9, FALSE)))
+ return 0;
+ }
+
+ if (!HvNAME(stash))
+ Perl_croak(aTHX_
+ "Can't use anonymous symbol table for method lookup");
+
if ((level > 100) || (level < -100))
- croak("Recursive inheritance detected while looking for method '%s' in package '%s'",
+ Perl_croak(aTHX_ "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)) );
+ DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,HvNAME(stash)) );
gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
if (!gvp)
topgv = *gvp;
if (SvTYPE(topgv) != SVt_PVGV)
gv_init(topgv, stash, name, len, TRUE);
- if (cv = GvCV(topgv)) {
+ if ((cv = GvCV(topgv))) {
/* If genuine method or valid cache entry, use it */
if (!GvCVGEN(topgv) || GvCVGEN(topgv) == PL_sub_generation)
return topgv;
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));
+ Perl_croak(aTHX_ "Cannot create %s::ISA", HvNAME(stash));
if (SvTYPE(gv) != SVt_PVGV)
gv_init(gv, stash, "ISA", 3, TRUE);
SvREFCNT_dec(GvAV(gv));
SV* sv = *svp++;
HV* basestash = gv_stashsv(sv, FALSE);
if (!basestash) {
- dTHR; /* just for ckWARN */
if (ckWARN(WARN_MISC))
- warner(WARN_MISC, "Can't locate package %s for @%s::ISA",
- SvPVX(sv), HvNAME(stash));
+ Perl_warner(aTHX_ packWARN(WARN_MISC), "Can't locate package %"SVf" for @%s::ISA",
+ sv, HvNAME(stash));
continue;
}
gv = gv_fetchmeth(basestash, name, len,
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)) {
+ 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:
(cv = GvCV(gv)) &&
(CvROOT(cv) || CvXSUB(cv)))
{
- if (cv = GvCV(topgv))
+ if ((cv = GvCV(topgv)))
SvREFCNT_dec(cv);
GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv));
GvCVGEN(topgv) = PL_sub_generation;
return 0;
}
+/*
+=for apidoc gv_fetchmeth_autoload
+
+Same as gv_fetchmeth(), but looks for autoloaded subroutines too.
+Returns a glob for the subroutine.
+
+For an autoloaded subroutine without a GV, will create a GV even
+if C<level < 0>. For an autoloaded subroutine without a stub, GvCV()
+of the result may be zero.
+
+=cut
+*/
+
+GV *
+Perl_gv_fetchmeth_autoload(pTHX_ HV *stash, const char *name, STRLEN len, I32 level)
+{
+ GV *gv = gv_fetchmeth(stash, name, len, level);
+
+ if (!gv) {
+ char autoload[] = "AUTOLOAD";
+ STRLEN autolen = sizeof(autoload)-1;
+ CV *cv;
+ GV **gvp;
+
+ if (!stash)
+ return Nullgv; /* UNIVERSAL::AUTOLOAD could cause trouble */
+ if (len == autolen && strnEQ(name, autoload, autolen))
+ return Nullgv;
+ if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
+ return Nullgv;
+ cv = GvCV(gv);
+ if (!(CvROOT(cv) || CvXSUB(cv)))
+ return Nullgv;
+ /* Have an autoload */
+ if (level < 0) /* Cannot do without a stub */
+ gv_fetchmeth(stash, name, len, 0);
+ gvp = (GV**)hv_fetch(stash, name, len, (level >= 0));
+ if (!gvp)
+ return Nullgv;
+ return *gvp;
+ }
+ return gv;
+}
+
+/*
+=for apidoc gv_fetchmethod
+
+See L<gv_fetchmethod_autoload>.
+
+=cut
+*/
+
GV *
-gv_fetchmethod(HV *stash, char *name)
+Perl_gv_fetchmethod(pTHX_ HV *stash, const char *name)
{
return gv_fetchmethod_autoload(stash, name, TRUE);
}
+/*
+=for apidoc gv_fetchmethod_autoload
+
+Returns the glob which contains the subroutine to call to invoke the method
+on the C<stash>. In fact in the presence of autoloading this may be the
+glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is
+already setup.
+
+The third parameter of C<gv_fetchmethod_autoload> determines whether
+AUTOLOAD lookup is performed if the given method is not present: non-zero
+means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD.
+Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload>
+with a non-zero C<autoload> parameter.
+
+These functions grant C<"SUPER"> token as a prefix of the method name. Note
+that if you want to keep the returned glob for a long time, you need to
+check for it being "AUTOLOAD", since at the later time the call may load a
+different subroutine due to $AUTOLOAD changing its value. Use the glob
+created via a side effect to do this.
+
+These functions have the same side-effects and as C<gv_fetchmeth> with
+C<level==0>. C<name> should be writable if contains C<':'> or C<'
+''>. The warning against passing the GV returned by C<gv_fetchmeth> to
+C<call_sv> apply equally to these functions.
+
+=cut
+*/
+
GV *
-gv_fetchmethod_autoload(HV *stash, char *name, I32 autoload)
+Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload)
{
- dTHR;
- register char *nend;
- char *nsplit = 0;
+ register const char *nend;
+ const char *nsplit = 0;
GV* gv;
-
+ HV* ostash = stash;
+
+ if (stash && SvTYPE(stash) < SVt_PVHV)
+ stash = Nullhv;
+
for (nend = name; *nend; nend++) {
if (*nend == '\'')
nsplit = nend;
nsplit = ++nend;
}
if (nsplit) {
- char *origname = name;
+ const 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)));
+ SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER",
+ CopSTASHPV(PL_curcop)));
+ /* __PACKAGE__::SUPER stash should be autovivified */
stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
- DEBUG_o( deb("Treating %s as %s::%s\n",
+ DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n",
origname, HvNAME(stash), name) );
}
- else
- stash = gv_stashpvn(origname, nsplit - origname, TRUE);
+ else {
+ /* don't autovifify if ->NoSuchStash::method */
+ stash = gv_stashpvn(origname, nsplit - origname, FALSE);
+
+ /* however, explicit calls to Pkg::SUPER::method may
+ happen, and may require autovivification to work */
+ if (!stash && (nsplit - origname) >= 7 &&
+ strnEQ(nsplit - 7, "::SUPER", 7) &&
+ gv_stashpvn(origname, nsplit - origname - 7, FALSE))
+ stash = gv_stashpvn(origname, nsplit - origname, TRUE);
+ }
+ ostash = stash;
}
gv = gv_fetchmeth(stash, name, nend - name, 0);
if (!gv) {
- if (strEQ(name,"import"))
+ if (strEQ(name,"import") || strEQ(name,"unimport"))
gv = (GV*)&PL_sv_yes;
else if (autoload)
- gv = gv_autoload4(stash, name, nend - name, TRUE);
+ gv = gv_autoload4(ostash, name, nend - name, TRUE);
}
else if (autoload) {
CV* cv = GvCV(gv);
}
GV*
-gv_autoload4(HV *stash, char *name, STRLEN len, I32 method)
+Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method)
{
- dTHR;
- static char autoload[] = "AUTOLOAD";
- static STRLEN autolen = 8;
+ char autoload[] = "AUTOLOAD";
+ STRLEN autolen = sizeof(autoload)-1;
GV* gv;
CV* cv;
HV* varstash;
GV* vargv;
SV* varsv;
+ char *packname = "";
if (len == autolen && strnEQ(name, autoload, autolen))
return Nullgv;
+ if (stash) {
+ if (SvTYPE(stash) < SVt_PVHV) {
+ packname = SvPV_nolen((SV*)stash);
+ stash = Nullhv;
+ }
+ else {
+ packname = HvNAME(stash);
+ }
+ }
if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
return Nullgv;
cv = GvCV(gv);
+ if (!(CvROOT(cv) || CvXSUB(cv)))
+ return Nullgv;
+
/*
* Inheriting AUTOLOAD for non-methods works ... for now.
*/
- if (ckWARN(WARN_DEPRECATED) && !method &&
+ if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX) && !method &&
(GvCVGEN(gv) || GvSTASH(gv) != stash))
- warner(WARN_DEPRECATED,
+ Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
"Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
- HvNAME(stash), (int)len, name);
+ packname, (int)len, name);
+
+ if (CvXSUB(cv)) {
+ /* rather than lookup/init $AUTOLOAD here
+ * only to have the XSUB do another lookup for $AUTOLOAD
+ * and split that value on the last '::',
+ * pass along the same data via some unused fields in the CV
+ */
+ CvSTASH(cv) = stash;
+ SvPVX(cv) = (char *)name; /* cast to lose constness warning */
+ SvCUR(cv) = len;
+ return gv;
+ }
/*
* Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
*/
varstash = GvSTASH(CvGV(cv));
vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
+ ENTER;
+
if (!isGV(vargv))
gv_init(vargv, varstash, autoload, autolen, FALSE);
+ LEAVE;
varsv = GvSV(vargv);
- sv_setpv(varsv, HvNAME(stash));
+ sv_setpv(varsv, packname);
sv_catpvn(varsv, "::", 2);
sv_catpvn(varsv, name, len);
SvTAINTED_off(varsv);
return gv;
}
+/* The "gv" parameter should be the glob known to Perl code as *!
+ * The scalar must already have been magicalized.
+ */
+STATIC void
+S_require_errno(pTHX_ GV *gv)
+{
+ HV* stash = gv_stashpvn("Errno",5,FALSE);
+
+ if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) {
+ dSP;
+ PUTBACK;
+ ENTER;
+ save_scalar(gv); /* keep the value of $! */
+ Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT,
+ newSVpvn("Errno",5), Nullsv);
+ LEAVE;
+ SPAGAIN;
+ stash = gv_stashpvn("Errno",5,FALSE);
+ if (!stash || !(gv_fetchmethod(stash, "TIEHASH")))
+ Perl_croak(aTHX_ "Can't use %%! because Errno.pm is not available");
+ }
+}
+
+/*
+=for apidoc gv_stashpv
+
+Returns a pointer to the stash for a specified package. C<name> should
+be a valid UTF-8 string. If C<create> is set then the package will be
+created if it does not already exist. If C<create> is not set and the
+package does not exist then NULL is returned.
+
+=cut
+*/
+
HV*
-gv_stashpv(char *name, I32 create)
+Perl_gv_stashpv(pTHX_ const char *name, I32 create)
{
return gv_stashpvn(name, strlen(name), create);
}
HV*
-gv_stashpvn(char *name, U32 namelen, I32 create)
+Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create)
{
char smallbuf[256];
char *tmpbuf;
return stash;
}
+/*
+=for apidoc gv_stashsv
+
+Returns a pointer to the stash for a specified package, which must be a
+valid UTF-8 string. See C<gv_stashpv>.
+
+=cut
+*/
+
HV*
-gv_stashsv(SV *sv, I32 create)
+Perl_gv_stashsv(pTHX_ SV *sv, I32 create)
{
register char *ptr;
STRLEN len;
GV *
-gv_fetchpv(char *nambeg, I32 add, I32 sv_type)
+Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
{
- dTHR;
- register char *name = nambeg;
+ register const char *name = nambeg;
register GV *gv = 0;
GV**gvp;
I32 len;
- register char *namend;
+ register const 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 ((*namend == ':' && namend[1] == ':')
+ || (*namend == '\'' && namend[1]))
{
if (!stash)
stash = PL_defstash;
char smallbuf[256];
char *tmpbuf;
- if (len + 3 < sizeof smallbuf)
+ if (len + 3 < sizeof (smallbuf))
tmpbuf = smallbuf;
else
New(601, tmpbuf, len+3, char);
}
}
len = namend - name;
- if (!len)
- len = 1;
+
+ /* $_ should always be in main:: even when our'ed */
+ if (*name == '_' && !name[1])
+ stash = PL_defstash;
/* No stash in name, so see how we can default */
if (!stash) {
- if (isIDFIRST(*name)
- || (IN_UTF8 && ((*name & 0xc0) == 0xc0) && isIDFIRST_utf8((U8*)name)))
- {
+ if (isIDFIRST_lazy(name)) {
bool global = FALSE;
if (isUPPER(*name)) {
if (global)
stash = PL_defstash;
- else if ((COP*)PL_curcop == &PL_compiling) {
+ else if (IN_PERL_COMPILETIME) {
stash = PL_curstash;
if (add && (PL_hints & HINT_STRICT_VARS) &&
sv_type != SVt_PVCV &&
{
stash = 0;
}
- else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) ||
- sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) ||
- sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) )
+ else if ((sv_type == SVt_PV && !GvIMPORTED_SV(*gvp)) ||
+ (sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) ||
+ (sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) )
{
- warn("Variable \"%c%s\" is not imported",
+ Perl_warn(aTHX_ "Variable \"%c%s\" is not imported",
sv_type == SVt_PVAV ? '@' :
sv_type == SVt_PVHV ? '%' : '$',
name);
if (GvCVu(*gvp))
- warn("(Did you mean &%s instead?)\n", name);
+ Perl_warn(aTHX_ "\t(Did you mean &%s instead?)\n", name);
stash = 0;
}
}
}
else
- stash = PL_curcop->cop_stash;
+ stash = CopSTASH(PL_curcop);
}
else
stash = PL_defstash;
/* By this point we should have a stash and a name */
if (!stash) {
- if (!add)
- return Nullgv;
- {
- char sv_type_char = ((sv_type == SVt_PV) ? '$'
- : (sv_type == SVt_PVAV) ? '@'
- : (sv_type == SVt_PVHV) ? '%'
- : 0);
- if (sv_type_char)
- warn("Global symbol \"%c%s\" requires explicit package name",
- sv_type_char, name);
- else
- warn("Global symbol \"%s\" requires explicit package name",
- name);
+ if (add) {
+ register SV *err = Perl_mess(aTHX_
+ "Global symbol \"%s%s\" requires explicit package name",
+ (sv_type == SVt_PV ? "$"
+ : sv_type == SVt_PVAV ? "@"
+ : sv_type == SVt_PVHV ? "%"
+ : ""), name);
+ if (USE_UTF8_IN_NAMES)
+ SvUTF8_on(err);
+ qerror(err);
+ stash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
}
- ++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);
+ else
+ return Nullgv;
}
if (!SvREFCNT(stash)) /* symbol table under destruction */
if (add) {
GvMULTI_on(gv);
gv_init_sv(gv, sv_type);
+ if (*name=='!' && sv_type == SVt_PVHV && len==1)
+ require_errno(gv);
}
return gv;
} else if (add & GV_NOINIT) {
/* Adding a new symbol */
- if (add & GV_ADDWARN)
- warn("Had to create %s unexpectedly", nambeg);
+ if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL))
+ Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "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;
+
+ if (isALPHA(name[0]) && ! (isLEXWARN_on ? ckWARN(WARN_ONCE)
+ : (PL_dowarn & G_WARN_ON ) ) )
+ GvMULTI_on(gv) ;
/* set up magic where warranted */
switch (*name) {
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);
if (strEQ(name, "ISA")) {
AV* av = GvAVn(gv);
GvMULTI_on(gv);
- sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0);
+ sv_magic((SV*)av, (SV*)gv, PERL_MAGIC_isa, 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));
+ av_push(av, newSVpvn(pname = "NDBM_File",9));
gv_stashpvn(pname, 9, TRUE);
- av_push(av, newSVpv(pname = "DB_File",0));
+ av_push(av, newSVpvn(pname = "DB_File",7));
gv_stashpvn(pname, 7, TRUE);
- av_push(av, newSVpv(pname = "GDBM_File",0));
+ av_push(av, newSVpvn(pname = "GDBM_File",9));
gv_stashpvn(pname, 9, TRUE);
- av_push(av, newSVpv(pname = "SDBM_File",0));
+ av_push(av, newSVpvn(pname = "SDBM_File",9));
gv_stashpvn(pname, 9, TRUE);
- av_push(av, newSVpv(pname = "ODBM_File",0));
+ av_push(av, newSVpvn(pname = "ODBM_File",9));
gv_stashpvn(pname, 9, TRUE);
}
}
if (strEQ(name, "OVERLOAD")) {
HV* hv = GvHVn(gv);
GvMULTI_on(gv);
- hv_magic(hv, gv, 'A');
+ hv_magic(hv, Nullgv, PERL_MAGIC_overload);
}
break;
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;PL_sig_name[i];i++) {
+ if (!PL_psig_ptr) {
+ Newz(73, PL_psig_ptr, SIG_SIZE, SV*);
+ Newz(73, PL_psig_name, SIG_SIZE, SV*);
+ Newz(73, PL_psig_pend, SIG_SIZE, int);
+ }
+ GvMULTI_on(gv);
+ hv = GvHVn(gv);
+ hv_magic(hv, Nullgv, PERL_MAGIC_sig);
+ for (i = 1; i < SIG_SIZE; i++) {
SV ** init;
- init=hv_fetch(hv,PL_sig_name[i],strlen(PL_sig_name[i]),1);
- if(init)
- sv_setsv(*init,&PL_sv_undef);
+ init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1);
+ if (init)
+ sv_setsv(*init, &PL_sv_undef);
PL_psig_ptr[i] = 0;
PL_psig_name[i] = 0;
+ PL_psig_pend[i] = 0;
}
}
break;
+ case 'V':
+ if (strEQ(name, "VERSION"))
+ GvMULTI_on(gv);
+ 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;
+ if (
+ len > 1 ||
+ sv_type == SVt_PVAV ||
+ sv_type == SVt_PVHV ||
+ sv_type == SVt_PVCV ||
+ sv_type == SVt_PVFM ||
+ sv_type == SVt_PVIO
+ ) { break; }
PL_sawampersand = TRUE;
goto ro_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;
+
+ /* If %! has been used, automatically load Errno.pm.
+ The require will itself set errno, so in order to
+ preserve its value we have to set up the magic
+ now (rather than going to magicalize)
+ */
+
+ sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len);
+
+ if (sv_type == SVt_PVHV)
+ require_errno(gv);
+
+ break;
case '-':
if (len > 1)
break;
else {
AV* av = GvAVn(gv);
- sv_magic((SV*)av, Nullsv, 'D', Nullch, 0);
+ sv_magic((SV*)av, Nullsv, PERL_MAGIC_regdata, Nullch, 0);
+ SvREADONLY_on(av);
}
goto magicalize;
- case '#':
case '*':
- if (ckWARN(WARN_DEPRECATED) && len == 1 && sv_type == SVt_PV)
- warner(WARN_DEPRECATED, "Use of $%s is deprecated", name);
+ if (len == 1 && sv_type == SVt_PV && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX))
+ Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
+ "$* is no longer supported");
+ break;
+ case '#':
+ if (len == 1 && sv_type == SVt_PV && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX))
+ Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
+ "Use of $# is deprecated");
/* FALL THROUGH */
case '[':
case '^':
case ',':
case '\\':
case '/':
+ case '\001': /* $^A */
+ case '\003': /* $^C */
+ case '\004': /* $^D */
+ case '\006': /* $^F */
+ case '\010': /* $^H */
+ case '\011': /* $^I, NOT \t in EBCDIC */
+ case '\016': /* $^N */
+ case '\020': /* $^P */
+ if (len > 1)
+ break;
+ goto magicalize;
case '|':
- case '\001':
- case '\002':
- case '\003':
- 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;
+ sv_setiv(GvSV(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0);
goto magicalize;
- case '\023':
+ case '\005': /* $^E && $^ENCODING */
+ if (len > 1 && strNE(name, "\005NCODING"))
+ break;
+ goto magicalize;
+
+ case '\017': /* $^O & $^OPEN */
+ if (len > 1 && strNE(name, "\017PEN"))
+ break;
+ goto magicalize;
+ case '\023': /* $^S */
if (len > 1)
break;
goto ro_magicalize;
+ case '\024': /* $^T, ${^TAINT} */
+ if (len == 1)
+ goto magicalize;
+ else if (strEQ(name, "\024AINT"))
+ goto ro_magicalize;
+ else
+ break;
+ case '\025':
+ if (len > 1 && strNE(name, "\025NICODE"))
+ break;
+ goto ro_magicalize;
+
+ case '\027': /* $^W & $^WARNING_BITS */
+ if (len > 1
+ && strNE(name, "\027ARNING_BITS")
+ )
+ break;
+ goto magicalize;
case '+':
if (len > 1)
break;
else {
AV* av = GvAVn(gv);
- sv_magic((SV*)av, (SV*)av, 'D', Nullch, 0);
+ sv_magic((SV*)av, (SV*)av, PERL_MAGIC_regdata, Nullch, 0);
+ SvREADONLY_on(av);
}
/* FALL THROUGH */
case '1':
case '7':
case '8':
case '9':
+ /* ensures variable is only digits */
+ /* ${"1foo"} fails this test (and is thus writeable) */
+ /* added by japhy, but borrowed from is_gv_magical */
+
+ if (len > 1) {
+ const char *end = name + len;
+ while (--end > name) {
+ if (!isDIGIT(*end)) return gv;
+ }
+ }
+
ro_magicalize:
SvREADONLY_on(GvSV(gv));
magicalize:
- sv_magic(GvSV(gv), (SV*)gv, 0, name, len);
+ sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len);
break;
- case '\014':
+ case '\014': /* $^L */
if (len > 1)
break;
sv_setpv(GvSV(gv),"\f");
if (len == 1) {
SV *sv = GvSV(gv);
(void)SvUPGRADE(sv, SVt_PVNV);
- sv_setpv(sv, PL_patchlevel);
- (void)sv_2nv(sv);
+ Perl_sv_setpvf(aTHX_ sv,
+#if defined(PERL_SUBVERSION) && (PERL_SUBVERSION > 0)
+ "%8.6"
+#else
+ "%5.3"
+#endif
+ NVff,
+ SvNVX(PL_patchlevel));
+ SvNVX(sv) = SvNVX(PL_patchlevel);
+ SvNOK_on(sv);
SvREADONLY_on(sv);
}
break;
+ case '\026': /* $^V */
+ if (len == 1) {
+ SV *sv = GvSV(gv);
+ GvSV(gv) = SvREFCNT_inc(PL_patchlevel);
+ SvREFCNT_dec(sv);
+ }
+ break;
}
return gv;
}
void
-gv_fullname3(SV *sv, GV *gv, char *prefix)
+Perl_gv_fullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain)
{
+ char *name;
HV *hv = GvSTASH(gv);
if (!hv) {
- SvOK_off(sv);
+ (void)SvOK_off(sv);
return;
}
sv_setpv(sv, prefix ? prefix : "");
- sv_catpv(sv,HvNAME(hv));
- sv_catpvn(sv,"::", 2);
+
+ if (!HvNAME(hv))
+ name = "__ANON__";
+ else
+ name = HvNAME(hv);
+ if (keepmain || strNE(name, "main")) {
+ sv_catpv(sv,name);
+ sv_catpvn(sv,"::", 2);
+ }
sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
}
void
-gv_efullname3(SV *sv, GV *gv, char *prefix)
+Perl_gv_fullname3(pTHX_ SV *sv, GV *gv, const char *prefix)
+{
+ gv_fullname4(sv, gv, prefix, TRUE);
+}
+
+void
+Perl_gv_efullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain)
{
GV *egv = GvEGV(gv);
if (!egv)
egv = gv;
- gv_fullname3(sv, egv, prefix);
+ gv_fullname4(sv, egv, prefix, keepmain);
+}
+
+void
+Perl_gv_efullname3(pTHX_ SV *sv, GV *gv, const char *prefix)
+{
+ gv_efullname4(sv, gv, prefix, TRUE);
}
/* XXX compatibility with versions <= 5.003. */
void
-gv_fullname(SV *sv, GV *gv)
+Perl_gv_fullname(pTHX_ SV *sv, GV *gv)
{
gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : "");
}
/* XXX compatibility with versions <= 5.003. */
void
-gv_efullname(SV *sv, GV *gv)
+Perl_gv_efullname(pTHX_ SV *sv, GV *gv)
{
gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : "");
}
IO *
-newIO(void)
+Perl_newIO(pTHX)
{
- dTHR;
IO *io;
GV *iogv;
sv_upgrade((SV *)io,SVt_PVIO);
SvREFCNT(io) = 1;
SvOBJECT_on(io);
+ /* Clear the stashcache because a new IO could overrule a
+ package name */
+ hv_clear(PL_stashcache);
iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV);
/* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */
if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv))))
}
void
-gv_check(HV *stash)
+Perl_gv_check(pTHX_ 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))
+ (gv = (GV*)HeVAL(entry)) && isGV(gv) && (hv = GvHV(gv)))
{
- if (hv != PL_defstash)
+ if (hv != PL_defstash && hv != stash)
gv_check(hv); /* nested package */
}
else if (isALPHA(*HeKEY(entry))) {
+ char *file;
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 */
+ file = GvFILE(gv);
+ /* performance hack: if filename is absolute and it's a standard
+ * module, don't bother warning */
+ if (file
+ && PERL_FILE_IS_ABSOLUTE(file)
+#ifdef MACOS_TRADITIONAL
+ && (instr(file, ":lib:")
+#else
+ && (instr(file, "/lib/")
+#endif
+ || instr(file, ".pm")))
+ {
continue;
- warner(WARN_ONCE,
+ }
+ CopLINE_set(PL_curcop, GvLINE(gv));
+#ifdef USE_ITHREADS
+ CopFILE(PL_curcop) = file; /* set for warning */
+#else
+ CopFILEGV(PL_curcop) = gv_fetchfile(file);
+#endif
+ Perl_warner(aTHX_ packWARN(WARN_ONCE),
"Name \"%s::%s\" used only once: possible typo",
HvNAME(stash), GvNAME(gv));
}
}
GV *
-newGVgen(char *pack)
+Perl_newGVgen(pTHX_ char *pack)
{
- return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)PL_gensym++),
+ return gv_fetchpv(Perl_form(aTHX_ "%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)
+Perl_gp_ref(pTHX_ GP *gp)
{
+ if (!gp)
+ return (GP*)NULL;
gp->gp_refcnt++;
if (gp->gp_cv) {
if (gp->gp_cvgen) {
}
void
-gp_free(GV *gv)
+Perl_gp_free(pTHX_ GV *gv)
{
GP* gp;
- CV* cv;
if (!gv || !(gp = GvGP(gv)))
return;
if (gp->gp_refcnt == 0) {
- warn("Attempt to free unreferenced glob pointers");
+ if (ckWARN_d(WARN_INTERNAL))
+ Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
+ "Attempt to free unreferenced glob pointers"
+ pTHX__FORMAT pTHX__VALUE);
return;
}
if (gp->gp_cv) {
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);
+ if (gp->gp_sv) SvREFCNT_dec(gp->gp_sv);
+ if (gp->gp_av) SvREFCNT_dec(gp->gp_av);
+ if (gp->gp_hv) {
+ if (PL_stashcache && HvNAME(gp->gp_hv))
+ hv_delete(PL_stashcache,
+ HvNAME(gp->gp_hv), strlen(HvNAME(gp->gp_hv)),
+ G_DISCARD);
+ SvREFCNT_dec(gp->gp_hv);
+ }
+ if (gp->gp_io) SvREFCNT_dec(gp->gp_io);
+ if (gp->gp_cv) SvREFCNT_dec(gp->gp_cv);
+ if (gp->gp_form) 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;
+int
+Perl_magic_freeovrld(pTHX_ SV *sv, MAGIC *mg)
{
- 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;
+ AMT *amtp = (AMT*)mg->mg_ptr;
+ if (amtp && AMT_AMAGIC(amtp)) {
+ int i;
+ for (i = 1; i < NofAMmeth; i++) {
+ CV *cv = amtp->table[i];
+ if (cv != Nullcv) {
+ SvREFCNT_dec((SV *) cv);
+ amtp->table[i] = Nullcv;
+ }
+ }
+ }
+ return 0;
}
-#endif /* Microport 2.4 hack */
/* Updates and caches the CV's */
bool
-Gv_AMupdate(HV *stash)
+Perl_Gv_AMupdate(pTHX_ HV *stash)
{
- dTHR;
- GV** gvp;
- HV* hv;
GV* gv;
CV* cv;
- MAGIC* mg=mg_find((SV*)stash,'c');
+ MAGIC* mg=mg_find((SV*)stash, PERL_MAGIC_overload_table);
AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL;
AMT amt;
- STRLEN n_a;
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');
+ return (bool)AMT_OVERLOADED(amtp);
+ sv_unmagic((SV*)stash, PERL_MAGIC_overload_table);
- DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) );
+ DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME(stash)) );
+ Zero(&amt,1,AMT);
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 PL_AMG_names */
-
- 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; 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, n_a));
- 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;
+ int filled = 0, have_ovl = 0;
+ int i, lim = 1;
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",
+ /* Try to find via inheritance. */
+ gv = gv_fetchmeth(stash, PL_AMG_names[0], 2, -1);
+ if (gv)
+ sv = GvSV(gv);
+
+ if (!gv)
+ lim = DESTROY_amg; /* Skip overloading entries. */
+ else if (SvTRUE(sv))
+ amt.fallback=AMGfallYES;
+ else if (SvOK(sv))
+ amt.fallback=AMGfallNEVER;
+
+ for (i = 1; i < lim; i++)
+ amt.table[i] = Nullcv;
+ for (; i < NofAMmeth; i++) {
+ char *cooky = (char*)PL_AMG_names[i];
+ /* Human-readable form, for debugging: */
+ char *cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i));
+ STRLEN l = strlen(cooky);
+
+ DEBUG_o( Perl_deb(aTHX_ "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);
+ /* don't fill the cache while looking up!
+ Creation of inheritance stubs in intermediate packages may
+ conflict with the logic of runtime method substitution.
+ Indeed, for inheritance A -> B -> C, if C overloads "+0",
+ then we could have created stubs for "(+0" in A and C too.
+ But if B overloads "bool", we may want to use it for
+ numifying instead of C's "+0". */
+ if (i >= DESTROY_amg)
+ gv = Perl_gv_fetchmeth_autoload(aTHX_ stash, cooky, l, 0);
+ else /* Autoload taken care of below */
+ gv = Perl_gv_fetchmeth(aTHX_ stash, cooky, l, -1);
cv = 0;
- if(gv && (cv = GvCV(gv))) {
+ if (gv && (cv = GvCV(gv))) {
if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")
&& strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) {
+ /* This is a hack to support autoloading..., while
+ knowing *which* methods were declared as overloaded. */
/* GvSV contains the name of the method. */
- GV *ngv;
+ GV *ngv = Nullgv;
- DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n",
- SvPV(GvSV(gv), n_a), cp, HvNAME(stash)) );
- if (!SvPOK(GvSV(gv))
+ DEBUG_o( Perl_deb(aTHX_ "Resolving method `%"SVf256\
+ "' for overloaded `%s' in package `%.256s'\n",
+ GvSV(gv), 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));
+ SV *gvsv = GvSV(gv);
+ const char *name = SvPOK(gvsv) ? SvPVX(gvsv) : "???";
+ Perl_croak(aTHX_ "%s method `%.256s' overloading `%s' "\
+ "in package `%.256s'",
+ (GvCVGEN(gv) ? "Stub found while resolving"
+ : "Can't resolve"),
+ name, cp, HvNAME(stash));
}
cv = GvCV(gv = ngv);
}
- DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
+ DEBUG_o( Perl_deb(aTHX_ "Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n",
cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))),
GvNAME(CvGV(cv))) );
filled = 1;
+ if (i < DESTROY_amg)
+ have_ovl = 1;
+ } else if (gv) { /* Autoloaded... */
+ cv = (CV*)gv;
+ 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;
+ if (have_ovl)
+ AMT_OVERLOADED_on(&amt);
+ sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table,
+ (char*)&amt, sizeof(AMT));
+ return have_ovl;
}
}
/* Here we have no table: */
- no_table:
+ /* no_table: */
AMT_AMAGIC_off(&amt);
- sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS));
+ sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table,
+ (char*)&amt, sizeof(AMTS));
return FALSE;
}
+
+CV*
+Perl_gv_handler(pTHX_ HV *stash, I32 id)
+{
+ MAGIC *mg;
+ AMT *amtp;
+ CV *ret;
+
+ if (!stash || !HvNAME(stash))
+ return Nullcv;
+ mg = mg_find((SV*)stash, PERL_MAGIC_overload_table);
+ if (!mg) {
+ do_update:
+ Gv_AMupdate(stash);
+ mg = mg_find((SV*)stash, PERL_MAGIC_overload_table);
+ }
+ amtp = (AMT*)mg->mg_ptr;
+ if ( amtp->was_ok_am != PL_amagic_generation
+ || amtp->was_ok_sub != PL_sub_generation )
+ goto do_update;
+ if (AMT_AMAGIC(amtp)) {
+ ret = amtp->table[id];
+ if (ret && isGV(ret)) { /* Autoloading stab */
+ /* Passing it through may have resulted in a warning
+ "Inherited AUTOLOAD for a non-method deprecated", since
+ our caller is going through a function call, not a method call.
+ So return the CV for AUTOLOAD, setting $AUTOLOAD. */
+ GV *gv = gv_fetchmethod(stash, (char*)PL_AMG_names[id]);
+
+ if (gv && GvCV(gv))
+ return GvCV(gv);
+ }
+ return ret;
+ }
+
+ return Nullcv;
+}
+
+
SV*
-amagic_call(SV *left, SV *right, int method, int flags)
+Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags)
{
- dTHR;
- MAGIC *mg;
- CV *cv;
+ MAGIC *mg;
+ CV *cv=NULL;
CV **cvp=NULL, **ocvp=NULL;
- AMT *amtp, *oamtp;
- int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
+ AMT *amtp=NULL, *oamtp=NULL;
+ int off=0, off1, lr=0, assign=AMGf_assign & flags, notfound=0;
int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0;
- HV* stash;
+#ifdef DEBUGGING
+ int fl=0;
+#endif
+ HV* stash=NULL;
if (!(AMGf_noleft & flags) && SvAMAGIC(left)
- && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c'))
- && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
+ && (stash = SvSTASH(SvRV(left)))
+ && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table))
+ && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
? (oamtp = amtp = (AMT*)mg->mg_ptr)->table
: (CV **) NULL))
- && ((cv = cvp[off=method+assignshift])
+ && ((cv = cvp[off=method+assignshift])
|| (assign && amtp->fallback > AMGfallNEVER && /* fallback to
* usual method */
- (fl = 1, cv = cvp[off=method])))) {
+ (
+#ifdef DEBUGGING
+ fl = 1,
+#endif
+ cv = cvp[off=method])))) {
lr = -1; /* Call method for left argument */
} else {
if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) {
(void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg]));
break;
case not_amg:
- (void)((cv = cvp[off=bool__amg])
+ (void)((cv = cvp[off=bool__amg])
|| (cv = cvp[off=numer_amg])
|| (cv = cvp[off=string_amg]));
postpr = 1;
}
break;
case abs_amg:
- if ((cvp[off1=lt_amg] || cvp[off1=ncmp_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) {
}
break;
case neg_amg:
- if (cv = cvp[off=subtr_amg]) {
+ if ((cv = cvp[off=subtr_amg])) {
right = left;
left = sv_2mortal(newSViv(0));
lr = 1;
}
break;
+ case int_amg:
case iter_amg: /* XXXX Eventually should do to_gv. */
+ /* FAIL safe */
+ return NULL; /* Delegate operation to standard mechanisms. */
+ break;
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. */
+ return left; /* 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 = (AMT_AMAGIC((AMT*)mg->mg_ptr)
+ && (stash = SvSTASH(SvRV(right)))
+ && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_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;
- } else if (((ocvp && oamtp->fallback > AMGfallNEVER
- && (cvp=ocvp) && (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
}
} else {
not_found: /* No method found, either report or croak */
+ switch (method) {
+ case to_sv_amg:
+ case to_av_amg:
+ case to_hv_amg:
+ case to_gv_amg:
+ case to_cv_amg:
+ /* FAIL safe */
+ return left; /* Delegate operation to standard mechanisms. */
+ break;
+ }
if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */
notfound = 1; lr = -1;
} else if (cvp && (cv=cvp[nomethod_amg])) {
} else {
SV *msg;
if (off==-1) off=method;
- msg = sv_2mortal(newSVpvf(
+ msg = sv_2mortal(Perl_newSVpvf(aTHX_
"Operation `%s': no method found,%sargument %s%s%s%s",
- PL_AMG_names[method + assignshift],
+ AMG_id2name(method + assignshift),
(flags & AMGf_unary ? " " : "\n\tleft "),
- SvAMAGIC(left)?
+ SvAMAGIC(left)?
"in overloaded package ":
"has no overloaded magic",
- SvAMAGIC(left)?
+ SvAMAGIC(left)?
HvNAME(SvSTASH(SvRV(left))):
"",
- SvAMAGIC(right)?
+ SvAMAGIC(right)?
",\n\tright argument in overloaded package ":
- (flags & AMGf_unary
+ (flags & AMGf_unary
? ""
: ",\n\tright argument has no overloaded magic"),
- SvAMAGIC(right)?
+ SvAMAGIC(right)?
HvNAME(SvSTASH(SvRV(right))):
""));
if (amtp && amtp->fallback >= AMGfallYES) {
- DEBUG_o( deb("%s", SvPVX(msg)) );
+ DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) );
} else {
- croak("%_", msg);
+ Perl_croak(aTHX_ "%"SVf, msg);
}
return NULL;
}
force_cpy = force_cpy || assign;
}
}
+#ifdef DEBUGGING
if (!notfound) {
- 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? "" :
- 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": "") );
+ DEBUG_o(Perl_deb(aTHX_
+ "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n",
+ AMG_id2name(off),
+ method+assignshift==off? "" :
+ " (initially `",
+ method+assignshift==off? "" :
+ AMG_id2name(method+assignshift),
+ method+assignshift==off? "" : "')",
+ flags & AMGf_unary? "" :
+ lr==1 ? " for right argument": " for left argument",
+ flags & AMGf_unary? " for argument" : "",
+ stash ? HvNAME(stash) : "null",
+ fl? ",\n\tassignment variant used": "") );
}
+#endif
/* Since we use shallow copy during assignment, we need
* to dublicate the contents, probably calling user-supplied
* version of copy operator
* 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,
+ * assignshift==0, assign==T,
* force_cpy == T
* d) Increment or decrement, translated to nomethod.
- * assignshift==0, assign==0,
+ * assignshift==0, assign==0,
* force_cpy == T
* e) Assignment form translated to nomethod.
* assignshift==1, assign==T, method + 1 != off
if (PERLDB_SUB && PL_curstash != PL_debstash)
PL_op->op_private |= OPpENTERSUB_DB;
PUTBACK;
- pp_pushmark(ARGS);
+ pp_pushmark();
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 *)PL_AMG_names[method + assignshift],0)));
+ PUSHs( sv_2mortal(newSVpv(AMG_id2name(method + assignshift),0)));
}
PUSHs((SV*)cv);
PUTBACK;
- if (PL_op = pp_entersub(ARGS))
- CALLRUNOPS();
+ if ((PL_op = Perl_pp_entersub(aTHX)))
+ CALLRUNOPS(aTHX);
LEAVE;
SPAGAIN;
CATCH_SET(oldcatch);
if (postpr) {
- int ans;
+ int ans=0;
switch (method) {
case le_amg:
case sle_amg:
case dec_amg:
SvSetSV(left,res); return left;
case not_amg:
- ans=!SvOK(res); break;
+ ans=!SvTRUE(res); break;
}
return boolSV(ans);
} else if (method==copy_amg) {
if (!SvROK(res)) {
- croak("Copy method did not return a reference");
+ Perl_croak(aTHX_ "Copy method did not return a reference");
}
return SvREFCNT_inc(SvRV(res));
} else {
}
}
}
+
+/*
+=for apidoc is_gv_magical
+
+Returns C<TRUE> if given the name of a magical GV.
+
+Currently only useful internally when determining if a GV should be
+created even in rvalue contexts.
+
+C<flags> is not used at present but available for future extension to
+allow selecting particular classes of magical variable.
+
+=cut
+*/
+bool
+Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags)
+{
+ if (!len)
+ return FALSE;
+
+ switch (*name) {
+ case 'I':
+ if (len == 3 && strEQ(name, "ISA"))
+ goto yes;
+ break;
+ case 'O':
+ if (len == 8 && strEQ(name, "OVERLOAD"))
+ goto yes;
+ break;
+ case 'S':
+ if (len == 3 && strEQ(name, "SIG"))
+ goto yes;
+ break;
+ case '\017': /* $^O & $^OPEN */
+ if (len == 1
+ || (len == 4 && strEQ(name, "\017PEN")))
+ {
+ goto yes;
+ }
+ break;
+ case '\025':
+ if (len > 1 && strEQ(name, "\025NICODE"))
+ goto yes;
+ case '\027': /* $^W & $^WARNING_BITS */
+ if (len == 1
+ || (len == 12 && strEQ(name, "\027ARNING_BITS"))
+ )
+ {
+ goto yes;
+ }
+ break;
+
+ case '&':
+ case '`':
+ case '\'':
+ case ':':
+ case '?':
+ case '!':
+ case '-':
+ case '#':
+ case '[':
+ case '^':
+ case '~':
+ case '=':
+ case '%':
+ case '.':
+ case '(':
+ case ')':
+ case '<':
+ case '>':
+ case ',':
+ case '\\':
+ case '/':
+ case '|':
+ case '+':
+ case ';':
+ case ']':
+ case '\001': /* $^A */
+ case '\003': /* $^C */
+ case '\004': /* $^D */
+ case '\005': /* $^E */
+ case '\006': /* $^F */
+ case '\010': /* $^H */
+ case '\011': /* $^I, NOT \t in EBCDIC */
+ case '\014': /* $^L */
+ case '\016': /* $^N */
+ case '\020': /* $^P */
+ case '\023': /* $^S */
+ case '\026': /* $^V */
+ if (len == 1)
+ goto yes;
+ break;
+ case '\024': /* $^T, ${^TAINT} */
+ if (len == 1 || strEQ(name, "\024AINT"))
+ goto yes;
+ break;
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ if (len > 1) {
+ char *end = name + len;
+ while (--end > name) {
+ if (!isDIGIT(*end))
+ return FALSE;
+ }
+ }
+ yes:
+ return TRUE;
+ default:
+ break;
+ }
+ return FALSE;
+}
https://perl5.git.perl.org / perl5.git / blobdiff