/*
=head1 GV Functions
-
A GV is a structure which corresponds to to a Perl typeglob, ie *foo.
It is a structure that holds a pointer to a scalar, an array, a hash etc,
corresponding to $foo, @foo, %foo.
#include "EXTERN.h"
#define PERL_IN_GV_C
#include "perl.h"
-#include "overload.c"
+#include "overload.inc"
#include "keywords.h"
#include "feature.h"
static const char S_autoload[] = "AUTOLOAD";
-static const STRLEN S_autolen = sizeof(S_autoload)-1;
+#define S_autolen (sizeof("AUTOLOAD")-1)
GV *
Perl_gv_add_by_type(pTHX_ GV *gv, svtype type)
{
*where = newSV_type(type);
if (type == SVt_PVAV && GvNAMELEN(gv) == 3
- && strnEQ(GvNAME(gv), "ISA", 3))
+ && strEQs(GvNAME(gv), "ISA"))
sv_magic(*where, (SV *)gv, PERL_MAGIC_isa, NULL, 0);
}
return gv;
Perl_gv_fetchfile_flags(pTHX_ const char *const name, const STRLEN namelen,
const U32 flags)
{
- dVAR;
char smallbuf[128];
char *tmpbuf;
const STRLEN tmplen = namelen + 2;
sv_setpvn(GvSV(gv), name, namelen);
#endif
}
- if ((PERLDB_LINE || PERLDB_SAVESRC) && !GvAV(gv))
+ if (PERLDB_LINE_OR_SAVESRC && !GvAV(gv))
hv_magic(GvHVn(gv), GvAVn(gv), PERL_MAGIC_dbfile);
if (tmpbuf != smallbuf)
Safefree(tmpbuf);
If C<gv> is a typeglob whose subroutine entry is a constant sub eligible for
inlining, or C<gv> is a placeholder reference that would be promoted to such
a typeglob, then returns the value returned by the sub. Otherwise, returns
-NULL.
+C<NULL>.
=cut
*/
Perl_gv_const_sv(pTHX_ GV *gv)
{
PERL_ARGS_ASSERT_GV_CONST_SV;
+ PERL_UNUSED_CONTEXT;
if (SvTYPE(gv) == SVt_PVGV)
return cv_const_sv(GvCVu(gv));
- return SvROK(gv) && SvTYPE(SvRV(gv)) != SVt_PVAV ? SvRV(gv) : NULL;
+ return SvROK(gv) && SvTYPE(SvRV(gv)) != SVt_PVAV && SvTYPE(SvRV(gv)) != SVt_PVCV ? SvRV(gv) : NULL;
}
GP *
void
Perl_cvgv_set(pTHX_ CV* cv, GV* gv)
{
- GV * const oldgv = CvGV(cv);
+ GV * const oldgv = CvNAMED(cv) ? NULL : SvANY(cv)->xcv_gv_u.xcv_gv;
HEK *hek;
PERL_ARGS_ASSERT_CVGV_SET;
sv_del_backref(MUTABLE_SV(oldgv), MUTABLE_SV(cv));
}
}
- else if ((hek = CvNAME_HEK(cv))) unshare_hek(hek);
+ else if ((hek = CvNAME_HEK(cv))) {
+ unshare_hek(hek);
+ CvLEXICAL_off(cv);
+ }
+ CvNAMED_off(cv);
SvANY(cv)->xcv_gv_u.xcv_gv = gv;
assert(!CvCVGV_RC(cv));
}
}
+/* Convert CvSTASH + CvNAME_HEK into a GV. Conceptually, all subs have a
+ GV, but for efficiency that GV may not in fact exist. This function,
+ called by CvGV, reifies it. */
+
+GV *
+Perl_cvgv_from_hek(pTHX_ CV *cv)
+{
+ GV *gv;
+ SV **svp;
+ PERL_ARGS_ASSERT_CVGV_FROM_HEK;
+ assert(SvTYPE(cv) == SVt_PVCV);
+ if (!CvSTASH(cv)) return NULL;
+ ASSUME(CvNAME_HEK(cv));
+ svp = hv_fetchhek(CvSTASH(cv), CvNAME_HEK(cv), 0);
+ gv = MUTABLE_GV(svp && *svp ? *svp : newSV(0));
+ if (!isGV(gv))
+ gv_init_pvn(gv, CvSTASH(cv), HEK_KEY(CvNAME_HEK(cv)),
+ HEK_LEN(CvNAME_HEK(cv)),
+ SVf_UTF8 * !!HEK_UTF8(CvNAME_HEK(cv)));
+ if (!CvNAMED(cv)) { /* gv_init took care of it */
+ assert (SvANY(cv)->xcv_gv_u.xcv_gv == gv);
+ return gv;
+ }
+ unshare_hek(CvNAME_HEK(cv));
+ CvNAMED_off(cv);
+ SvANY(cv)->xcv_gv_u.xcv_gv = gv;
+ if (svp && *svp) SvREFCNT_inc_simple_void_NN(gv);
+ CvCVGV_RC_on(cv);
+ return gv;
+}
+
/* Assign CvSTASH(cv) = st, handling weak references. */
void
Converts a scalar into a typeglob. This is an incoercible typeglob;
assigning a reference to it will assign to one of its slots, instead of
-overwriting it as happens with typeglobs created by SvSetSV. Converting
-any scalar that is SvOK() may produce unpredictable results and is reserved
+overwriting it as happens with typeglobs created by C<SvSetSV>. Converting
+any scalar that is C<SvOK()> may produce unpredictable results and is reserved
for perl's internal use.
C<gv> is the scalar to be converted.
passed to this function matches the name of the element. If it does not
match, perl's internal bookkeeping will get out of sync.
-C<flags> can be set to SVf_UTF8 if C<name> is a UTF8 string, or
+C<flags> can be set to C<SVf_UTF8> if C<name> is a UTF-8 string, or
the return value of SvUTF8(sv). It can also take the
-GV_ADDMULTI flag, which means to pretend that the GV has been
+C<GV_ADDMULTI> flag, which means to pretend that the GV has been
seen before (i.e., suppress "Used once" warnings).
=for apidoc gv_init
-The old form of gv_init_pvn(). It does not work with UTF8 strings, as it
+The old form of C<gv_init_pvn()>. It does not work with UTF-8 strings, as it
has no flags parameter. If the C<multi> parameter is set, the
-GV_ADDMULTI flag will be passed to gv_init_pvn().
+C<GV_ADDMULTI> flag will be passed to C<gv_init_pvn()>.
=for apidoc gv_init_pv
-Same as gv_init_pvn(), but takes a nul-terminated string for the name
+Same as C<gv_init_pvn()>, but takes a nul-terminated string for the name
instead of separate char * and length parameters.
=for apidoc gv_init_sv
-Same as gv_init_pvn(), but takes an SV * for the name instead of separate
+Same as C<gv_init_pvn()>, but takes an SV * for the name instead of separate
char * and length parameters. C<flags> is currently unused.
=cut
void
Perl_gv_init_pvn(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, U32 flags)
{
- dVAR;
const U32 old_type = SvTYPE(gv);
const bool doproto = old_type > SVt_NULL;
char * const proto = (doproto && SvPOK(gv))
assert (!(proto && has_constant));
if (has_constant) {
- /* The constant has to be a simple scalar type. */
+ /* The constant has to be a scalar, array or subroutine. */
switch (SvTYPE(has_constant)) {
case SVt_PVHV:
- case SVt_PVCV:
case SVt_PVFM:
case SVt_PVIO:
Perl_croak(aTHX_ "Cannot convert a reference to %s to typeglob",
sv_reftype(has_constant, 0));
break;
+
default: NOOP;
}
SvRV_set(gv, NULL);
gv_name_set(gv, name, len, GV_ADD | ( flags & SVf_UTF8 ? SVf_UTF8 : 0 ));
if (flags & GV_ADDMULTI || doproto) /* doproto means it */
GvMULTI_on(gv); /* _was_ mentioned */
- if (doproto) {
+ if (has_constant && SvTYPE(has_constant) == SVt_PVCV) {
+ /* Not actually a constant. Just a regular sub. */
+ CV * const cv = (CV *)has_constant;
+ GvCV_set(gv,cv);
+ if (CvSTASH(cv) == stash && (
+ CvNAME_HEK(cv) == GvNAME_HEK(gv)
+ || ( HEK_LEN(CvNAME_HEK(cv)) == HEK_LEN(GvNAME_HEK(gv))
+ && HEK_FLAGS(CvNAME_HEK(cv)) != HEK_FLAGS(GvNAME_HEK(gv))
+ && HEK_UTF8(CvNAME_HEK(cv)) == HEK_UTF8(GvNAME_HEK(gv))
+ && memEQ(HEK_KEY(CvNAME_HEK(cv)), GvNAME(gv), GvNAMELEN(gv))
+ )
+ ))
+ CvGV_set(cv,gv);
+ }
+ else if (doproto) {
CV *cv;
if (has_constant) {
/* newCONSTSUB takes ownership of the reference from us. */
return NULL;
case KEY_chdir:
case KEY_chomp: case KEY_chop: case KEY_defined: case KEY_delete:
- case KEY_each : case KEY_eof : case KEY_exec : case KEY_exists:
- case KEY_keys:
+ case KEY_eof : case KEY_exec: case KEY_exists :
case KEY_lstat:
- case KEY_pop:
- case KEY_push:
- case KEY_shift:
- case KEY_splice: case KEY_split:
+ case KEY_split:
case KEY_stat:
case KEY_system:
case KEY_truncate: case KEY_unlink:
- case KEY_unshift:
- case KEY_values:
ampable = FALSE;
}
if (!gv) {
GvCVGEN(gv) = 0;
CvISXSUB_on(cv);
CvXSUB(cv) = core_xsub;
+ PoisonPADLIST(cv);
}
CvGV_set(cv, gv); /* This stops new ATTRSUB from setting CvFILE
from PL_curcop. */
- (void)gv_fetchfile(file);
+ /* XSUBs can't be perl lang/perl5db.pl debugged
+ if (PERLDB_LINE_OR_SAVESRC)
+ (void)gv_fetchfile(file); */
CvFILE(cv) = (char *)file;
/* XXX This is inefficient, as doing things this order causes
a prototype check in newATTRSUB. But we have to do
)) != NULL) {
assert(GvCV(gv) == orig_cv);
if (opnum != OP_VEC && opnum != OP_SUBSTR && opnum != OP_POS
- && opnum != OP_UNDEF)
+ && opnum != OP_UNDEF && opnum != OP_KEYS)
CvLVALUE_off(cv); /* Now *that* was a neat trick. */
}
LEAVE;
GV *
Perl_gv_fetchmeth_sv(pTHX_ HV *stash, SV *namesv, I32 level, U32 flags)
{
- char *namepv;
- STRLEN namelen;
- PERL_ARGS_ASSERT_GV_FETCHMETH_SV;
- namepv = SvPV(namesv, namelen);
- if (SvUTF8(namesv))
- flags |= SVf_UTF8;
- return gv_fetchmeth_pvn(stash, namepv, namelen, level, flags);
+ char *namepv;
+ STRLEN namelen;
+ PERL_ARGS_ASSERT_GV_FETCHMETH_SV;
+ if (LIKELY(SvPOK_nog(namesv))) /* common case */
+ return gv_fetchmeth_internal(stash, namesv, NULL, 0, level, flags);
+ namepv = SvPV(namesv, namelen);
+ if (SvUTF8(namesv)) flags |= SVf_UTF8;
+ return gv_fetchmeth_pvn(stash, namepv, namelen, level, flags);
}
/*
Perl_gv_fetchmeth_pv(pTHX_ HV *stash, const char *name, I32 level, U32 flags)
{
PERL_ARGS_ASSERT_GV_FETCHMETH_PV;
- return gv_fetchmeth_pvn(stash, name, strlen(name), level, flags);
+ return gv_fetchmeth_internal(stash, NULL, name, strlen(name), level, flags);
}
/*
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::.
+accessible via C<@ISA> and C<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.
-The only significant values for C<flags> are GV_SUPER and SVf_UTF8.
+The only significant values for C<flags> are C<GV_SUPER> and C<SVf_UTF8>.
-GV_SUPER indicates that we want to look up the method in the superclasses
+C<GV_SUPER> indicates that we want to look up the method in the superclasses
of the C<stash>.
The
/* NOTE: No support for tied ISA */
-GV *
-Perl_gv_fetchmeth_pvn(pTHX_ HV *stash, const char *name, STRLEN len, I32 level, U32 flags)
+PERL_STATIC_INLINE GV*
+S_gv_fetchmeth_internal(pTHX_ HV* stash, SV* meth, const char* name, STRLEN len, I32 level, U32 flags)
{
- dVAR;
GV** gvp;
+ HE* he;
AV* linear_av;
SV** linear_svp;
SV* linear_sv;
CV* cand_cv = NULL;
GV* topgv = NULL;
const char *hvname;
- I32 create = (level >= 0) ? 1 : 0;
+ I32 create = (level >= 0) ? HV_FETCH_LVALUE : 0;
I32 items;
U32 topgen_cmp;
U32 is_utf8 = flags & SVf_UTF8;
- PERL_ARGS_ASSERT_GV_FETCHMETH_PVN;
-
/* UNIVERSAL methods should be callable without a stash */
if (!stash) {
create = 0; /* probably appropriate */
Perl_croak(aTHX_ "Can't use anonymous symbol table for method lookup");
assert(hvname);
- assert(name);
+ assert(name || meth);
DEBUG_o( Perl_deb(aTHX_ "Looking for %smethod %s in package %s\n",
- flags & GV_SUPER ? "SUPER " : "",name,hvname) );
+ flags & GV_SUPER ? "SUPER " : "",
+ name ? name : SvPV_nolen(meth), hvname) );
topgen_cmp = HvMROMETA(stash)->cache_gen + PL_sub_generation;
else cachestash = stash;
/* check locally for a real method or a cache entry */
- gvp = (GV**)hv_fetch(cachestash, name, is_utf8 ? -(I32)len : (I32)len,
- create);
+ he = (HE*)hv_common(
+ cachestash, meth, name, len, (flags & SVf_UTF8) ? HVhek_UTF8 : 0, create, NULL, 0
+ );
+ if (he) gvp = (GV**)&HeVAL(he);
+ else gvp = NULL;
+
if(gvp) {
topgv = *gvp;
have_gv:
assert(topgv);
if (SvTYPE(topgv) != SVt_PVGV)
+ {
+ if (!name)
+ name = SvPV_nomg(meth, len);
gv_init_pvn(topgv, stash, name, len, GV_ADDMULTI|is_utf8);
+ }
if ((cand_cv = GvCV(topgv))) {
/* If genuine method or valid cache entry, use it */
if (!GvCVGEN(topgv) || GvCVGEN(topgv) == topgen_cmp) {
}
else if (stash == cachestash
&& len > 1 /* shortest is uc */ && HvNAMELEN_get(stash) == 4
- && strnEQ(hvname, "CORE", 4)
+ && strEQs(hvname, "CORE")
&& S_maybe_add_coresub(aTHX_ NULL,topgv,name,len))
goto have_gv;
}
if (!cstash) {
Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),
- "Can't locate package %"SVf" for @%"HEKf"::ISA",
+ "Can't locate package %" SVf " for @%" HEKf "::ISA",
SVfARG(linear_sv),
HEKfARG(HvNAME_HEK(stash)));
continue;
if (!gvp) {
if (len > 1 && HvNAMELEN_get(cstash) == 4) {
const char *hvname = HvNAME(cstash); assert(hvname);
- if (strnEQ(hvname, "CORE", 4)
+ if (strEQs(hvname, "CORE")
&& (candidate =
S_maybe_add_coresub(aTHX_ cstash,NULL,name,len)
))
/* Check UNIVERSAL without caching */
if(level == 0 || level == -1) {
- candidate = gv_fetchmeth_pvn(NULL, name, len, 1, flags &~GV_SUPER);
+ candidate = gv_fetchmeth_internal(NULL, meth, name, len, 1,
+ flags &~GV_SUPER);
if(candidate) {
cand_cv = GvCV(candidate);
if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) {
return 0;
}
+GV *
+Perl_gv_fetchmeth_pvn(pTHX_ HV *stash, const char *name, STRLEN len, I32 level, U32 flags)
+{
+ PERL_ARGS_ASSERT_GV_FETCHMETH_PVN;
+ return gv_fetchmeth_internal(stash, NULL, name, len, level, flags);
+}
+
/*
=for apidoc gv_fetchmeth_autoload
/*
=for apidoc gv_fetchmeth_pvn_autoload
-Same as gv_fetchmeth_pvn(), but looks for autoloaded subroutines too.
+Same as C<gv_fetchmeth_pvn()>, 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()
+if C<level < 0>. For an autoloaded subroutine without a stub, C<GvCV()>
of the result may be zero.
-Currently, the only significant value for C<flags> is SVf_UTF8.
+Currently, the only significant value for C<flags> is C<SVf_UTF8>.
=cut
*/
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 $AUTOLOAD is
+glob for "AUTOLOAD". In this case the corresponding variable C<$AUTOLOAD> is
already setup.
The third parameter of C<gv_fetchmethod_autoload> determines whether
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 $AUTOLOAD changing its value. Use the glob
+different subroutine due to C<$AUTOLOAD> changing its value. Use the glob
created as a side effect to do this.
These functions have the same side-effects as C<gv_fetchmeth> with
return gv_fetchmethod_pvn_flags(stash, name, strlen(name), flags);
}
-/* Don't merge this yet, as it's likely to get a len parameter, and possibly
- even a U32 hash */
GV *
Perl_gv_fetchmethod_pvn_flags(pTHX_ HV *stash, const char *name, const STRLEN len, U32 flags)
{
- dVAR;
- const char *nend;
- const char *nsplit = NULL;
+ const char * const origname = name;
+ const char * const name_end = name + len;
+ const char *last_separator = NULL;
GV* gv;
HV* ostash = stash;
- const char * const origname = name;
SV *const error_report = MUTABLE_SV(stash);
const U32 autoload = flags & GV_AUTOLOAD;
const U32 do_croak = flags & GV_CROAK;
if (SvTYPE(stash) < SVt_PVHV)
stash = NULL;
else {
- /* The only way stash can become NULL later on is if nsplit is set,
+ /* The only way stash can become NULL later on is if last_separator is set,
which in turn means that there is no need for a SVt_PVHV case
the error reporting code. */
}
- for (nend = name; *nend || nend != (origname + len); nend++) {
- if (*nend == '\'') {
- nsplit = nend;
- name = nend + 1;
- }
- else if (*nend == ':' && *(nend + 1) == ':') {
- nsplit = nend++;
- name = nend + 1;
- }
+ {
+ /* check if the method name is fully qualified or
+ * not, and separate the package name from the actual
+ * method name.
+ *
+ * leaves last_separator pointing to the beginning of the
+ * last package separator (either ' or ::) or 0
+ * if none was found.
+ *
+ * leaves name pointing at the beginning of the
+ * method name.
+ */
+ const char *name_cursor = name;
+ const char * const name_em1 = name_end - 1; /* name_end minus 1 */
+ for (name_cursor = name; name_cursor < name_end ; name_cursor++) {
+ if (*name_cursor == '\'') {
+ last_separator = name_cursor;
+ name = name_cursor + 1;
+ }
+ else if (name_cursor < name_em1 && *name_cursor == ':' && name_cursor[1] == ':') {
+ last_separator = name_cursor++;
+ name = name_cursor + 1;
+ }
+ }
}
- if (nsplit) {
- if ((nsplit - origname) == 5 && memEQ(origname, "SUPER", 5)) {
+
+ /* did we find a separator? */
+ if (last_separator) {
+ STRLEN sep_len= last_separator - origname;
+ if ( memEQs(origname, sep_len, "SUPER")) {
/* ->SUPER::method should really be looked up in original stash */
stash = CopSTASH(PL_curcop);
flags |= GV_SUPER;
DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n",
origname, HvENAME_get(stash), name) );
}
- else if ((nsplit - origname) >= 7 &&
- strnEQ(nsplit - 7, "::SUPER", 7)) {
+ else if ( sep_len >= 7 &&
+ strEQs(last_separator - 7, "::SUPER")) {
/* don't autovifify if ->NoSuchStash::SUPER::method */
- stash = gv_stashpvn(origname, nsplit - origname - 7, is_utf8);
+ stash = gv_stashpvn(origname, sep_len - 7, is_utf8);
if (stash) flags |= GV_SUPER;
}
else {
/* don't autovifify if ->NoSuchStash::method */
- stash = gv_stashpvn(origname, nsplit - origname, is_utf8);
+ stash = gv_stashpvn(origname, sep_len, is_utf8);
}
ostash = stash;
}
- gv = gv_fetchmeth_pvn(stash, name, nend - name, 0, flags);
+ gv = gv_fetchmeth_pvn(stash, name, name_end - name, 0, flags);
if (!gv) {
+ /* This is the special case that exempts Foo->import and
+ Foo->unimport from being an error even if there's no
+ import/unimport subroutine */
if (strEQ(name,"import") || strEQ(name,"unimport"))
gv = MUTABLE_GV(&PL_sv_yes);
else if (autoload)
gv = gv_autoload_pvn(
- ostash, name, nend - name, GV_AUTOLOAD_ISMETHOD|flags
+ ostash, name, name_end - name, GV_AUTOLOAD_ISMETHOD|flags
);
if (!gv && do_croak) {
/* Right now this is exclusively for the benefit of S_method_common
HV_FETCH_ISEXISTS, NULL, 0)
) {
require_pv("IO/File.pm");
- gv = gv_fetchmeth_pvn(stash, name, nend - name, 0, flags);
+ gv = gv_fetchmeth_pvn(stash, name, name_end - name, 0, flags);
if (gv)
return gv;
}
Perl_croak(aTHX_
- "Can't locate object method \"%"UTF8f
- "\" via package \"%"HEKf"\"",
- UTF8fARG(is_utf8, nend - name, name),
+ "Can't locate object method \"%" UTF8f
+ "\" via package \"%" HEKf "\"",
+ UTF8fARG(is_utf8, name_end - name, name),
HEKfARG(HvNAME_HEK(stash)));
}
else {
SV* packnamesv;
- if (nsplit) {
- packnamesv = newSVpvn_flags(origname, nsplit - origname,
+ if (last_separator) {
+ packnamesv = newSVpvn_flags(origname, last_separator - origname,
SVs_TEMP | is_utf8);
} else {
packnamesv = error_report;
}
Perl_croak(aTHX_
- "Can't locate object method \"%"UTF8f
- "\" via package \"%"SVf"\""
- " (perhaps you forgot to load \"%"SVf"\"?)",
- UTF8fARG(is_utf8, nend - name, name),
+ "Can't locate object method \"%" UTF8f
+ "\" via package \"%" SVf "\""
+ " (perhaps you forgot to load \"%" SVf "\"?)",
+ UTF8fARG(is_utf8, name_end - name, name),
SVfARG(packnamesv), SVfARG(packnamesv));
}
}
GV* stubgv;
GV* autogv;
- if (CvANON(cv) || !CvGV(cv))
+ if (CvANON(cv) || CvLEXICAL(cv))
stubgv = gv;
else {
stubgv = CvGV(cv);
GV*
Perl_gv_autoload_pvn(pTHX_ HV *stash, const char *name, STRLEN len, U32 flags)
{
- dVAR;
GV* gv;
CV* cv;
HV* varstash;
&& (GvCVGEN(gv) || GvSTASH(gv) != stash)
)
Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
- "Use of inherited AUTOLOAD for non-method %"SVf
- "::%"UTF8f"() is deprecated",
+ "Use of inherited AUTOLOAD for non-method %" SVf
+ "::%" UTF8f "() is deprecated. This will be "
+ "fatal in Perl 5.28",
SVfARG(packname),
UTF8fARG(is_utf8, len, name));
* use that, but for lack of anything better we will use the sub's
* original package to look up $AUTOLOAD.
*/
- varstash = GvSTASH(CvGV(cv));
+ varstash = CvNAMED(cv) ? CvSTASH(cv) : GvSTASH(CvGV(cv));
vargv = *(GV**)hv_fetch(varstash, S_autoload, S_autolen, TRUE);
ENTER;
/* require_tie_mod() internal routine for requiring a module
* that implements the logic of automatic ties like %! and %-
+ * It loads the module and then calls the _tie_it subroutine
+ * with the passed gv as an argument.
*
* The "gv" parameter should be the glob.
- * "varpv" holds the name of the var, used for error messages.
+ * "varname" holds the 1-char name of the var, used for error messages.
* "namesv" holds the module name. Its refcount will be decremented.
- * "methpv" holds the method name to test for to check that things
- * are working reasonably close to as expected.
* "flags": if flag & 1 then save the scalar before loading.
* For the protection of $! to work (it is set by this routine)
* the sv slot must already be magicalized.
*/
-STATIC HV*
-S_require_tie_mod(pTHX_ GV *gv, const char *varpv, SV* namesv, const char *methpv,const U32 flags)
+STATIC void
+S_require_tie_mod(pTHX_ GV *gv, const char varname, const char * name,
+ STRLEN len, const U32 flags)
{
- dVAR;
- HV* stash = gv_stashsv(namesv, 0);
+ const SV * const target = varname == '[' ? GvSV(gv) : (SV *)GvHV(gv);
PERL_ARGS_ASSERT_REQUIRE_TIE_MOD;
- if (!stash || !(gv_fetchmethod_autoload(stash, methpv, FALSE))) {
- SV *module = newSVsv(namesv);
- char varname = *varpv; /* varpv might be clobbered by load_module,
- so save it. For the moment it's always
- a single char. */
+ /* If it is not tied */
+ if (!target || !SvRMAGICAL(target)
+ || !mg_find(target,
+ varname == '[' ? PERL_MAGIC_tiedscalar : PERL_MAGIC_tied))
+ {
+ HV *stash;
+ GV **gvp;
+ dSP;
+
+ ENTER;
+
+#define HV_FETCH_TIE_FUNC (GV **)hv_fetchs(stash, "_tie_it", 0)
+
+ /* Load the module if it is not loaded. */
+ if (!(stash = gv_stashpvn(name, len, 0))
+ || !(gvp = HV_FETCH_TIE_FUNC) || !*gvp || !GvCV(*gvp))
+ {
+ SV * const module = newSVpvn(name, len);
const char type = varname == '[' ? '$' : '%';
-#ifdef DEBUGGING
- dSP;
-#endif
- ENTER;
- SAVEFREESV(namesv);
if ( flags & 1 )
save_scalar(gv);
Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, module, NULL);
assert(sp == PL_stack_sp);
- stash = gv_stashsv(namesv, 0);
+ stash = gv_stashpvn(name, len, 0);
if (!stash)
- Perl_croak(aTHX_ "panic: Can't use %c%c because %"SVf" is not available",
- type, varname, SVfARG(namesv));
- else if (!gv_fetchmethod(stash, methpv))
- Perl_croak(aTHX_ "panic: Can't use %c%c because %"SVf" does not support method %s",
- type, varname, SVfARG(namesv), methpv);
- LEAVE;
+ Perl_croak(aTHX_ "panic: Can't use %c%c because %s is not available",
+ type, varname, name);
+ else if (!(gvp = HV_FETCH_TIE_FUNC) || !*gvp || !GvCV(*gvp))
+ Perl_croak(aTHX_ "panic: Can't use %c%c because %s does not define _tie_it",
+ type, varname, name);
+ }
+ /* Now call the tie function. It should be in *gvp. */
+ assert(gvp); assert(*gvp); assert(GvCV(*gvp));
+ PUSHMARK(SP);
+ XPUSHs((SV *)gv);
+ PUTBACK;
+ call_sv((SV *)*gvp, G_VOID|G_DISCARD);
+ LEAVE;
}
- else SvREFCNT_dec_NN(namesv);
- return stash;
}
+/* add a require_tie_mod_s - the _s suffix is similar to pvs type suffixes,
+ * IOW it means we do STR_WITH_LEN() ourselves and the user should pass in
+ * a true string WITHOUT a len.
+ */
+#define require_tie_mod_s(gv, varname, name, flags) \
+ S_require_tie_mod(aTHX_ gv, varname, STR_WITH_LEN(name), flags)
+
/*
=for apidoc gv_stashpv
parameter indicates the length of the C<name>, in bytes. C<flags> is passed
to C<gv_fetchpvn_flags()>, so if set to C<GV_ADD> then the package will be
created if it does not already exist. If the package does not exist and
-C<flags> is 0 (or any other setting that does not create packages) then NULL
+C<flags> is 0 (or any other setting that does not create packages) then C<NULL>
is returned.
Flags may be one of:
GV_NOEXPAND
GV_ADDMG
-The most important of which are probably GV_ADD and SVf_UTF8.
+The most important of which are probably C<GV_ADD> and C<SVf_UTF8>.
+
+Note, use of C<gv_stashsv> instead of C<gv_stashpvn> where possible is strongly
+recommended for performance reasons.
=cut
*/
-HV*
-Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 flags)
+/*
+gv_stashpvn_internal
+
+Perform the internal bits of gv_stashsvpvn_cached. You could think of this
+as being one half of the logic. Not to be called except from gv_stashsvpvn_cached().
+
+*/
+
+PERL_STATIC_INLINE HV*
+S_gv_stashpvn_internal(pTHX_ const char *name, U32 namelen, I32 flags)
{
char smallbuf[128];
char *tmpbuf;
GV *tmpgv;
U32 tmplen = namelen + 2;
- PERL_ARGS_ASSERT_GV_STASHPVN;
+ PERL_ARGS_ASSERT_GV_STASHPVN_INTERNAL;
if (tmplen <= sizeof smallbuf)
tmpbuf = smallbuf;
tmpgv = gv_fetchpvn_flags(tmpbuf, tmplen, flags, SVt_PVHV);
if (tmpbuf != smallbuf)
Safefree(tmpbuf);
- if (!tmpgv)
+ if (!tmpgv || !isGV_with_GP(tmpgv))
return NULL;
stash = GvHV(tmpgv);
if (!(flags & ~GV_NOADD_MASK) && !stash) return NULL;
}
/*
+gv_stashsvpvn_cached
+
+Returns a pointer to the stash for a specified package, possibly
+cached. Implements both C<gv_stashpvn> and C<gv_stashsv>.
+
+Requires one of either namesv or namepv to be non-null.
+
+See C<L</gv_stashpvn>> for details on "flags".
+
+Note the sv interface is strongly preferred for performance reasons.
+
+*/
+
+#define PERL_ARGS_ASSERT_GV_STASHSVPVN_CACHED \
+ assert(namesv || name)
+
+PERL_STATIC_INLINE HV*
+S_gv_stashsvpvn_cached(pTHX_ SV *namesv, const char *name, U32 namelen, I32 flags)
+{
+ HV* stash;
+ HE* he;
+
+ PERL_ARGS_ASSERT_GV_STASHSVPVN_CACHED;
+
+ he = (HE *)hv_common(
+ PL_stashcache, namesv, name, namelen,
+ (flags & SVf_UTF8) ? HVhek_UTF8 : 0, 0, NULL, 0
+ );
+
+ if (he) return INT2PTR(HV*,SvIVX(HeVAL(he)));
+ else if (flags & GV_CACHE_ONLY) return NULL;
+
+ if (namesv) {
+ if (SvOK(namesv)) { /* prevent double uninit warning */
+ STRLEN len;
+ name = SvPV_const(namesv, len);
+ namelen = len;
+ flags |= SvUTF8(namesv);
+ } else {
+ name = ""; namelen = 0;
+ }
+ }
+ stash = gv_stashpvn_internal(name, namelen, flags);
+
+ if (stash && namelen) {
+ SV* const ref = newSViv(PTR2IV(stash));
+ (void)hv_store(PL_stashcache, name,
+ (flags & SVf_UTF8) ? -(I32)namelen : (I32)namelen, ref, 0);
+ }
+
+ return stash;
+}
+
+HV*
+Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 flags)
+{
+ PERL_ARGS_ASSERT_GV_STASHPVN;
+ return gv_stashsvpvn_cached(NULL, name, namelen, flags);
+}
+
+/*
=for apidoc gv_stashsv
-Returns a pointer to the stash for a specified package. See C<gv_stashpvn>.
+Returns a pointer to the stash for a specified package. See
+C<L</gv_stashpvn>>.
+
+Note this interface is strongly preferred over C<gv_stashpvn> for performance
+reasons.
=cut
*/
HV*
Perl_gv_stashsv(pTHX_ SV *sv, I32 flags)
{
- STRLEN len;
- const char * const ptr = SvPV_const(sv,len);
-
PERL_ARGS_ASSERT_GV_STASHSV;
-
- return gv_stashpvn(ptr, len, flags | SvUTF8(sv));
+ return gv_stashsvpvn_cached(sv, NULL, 0, flags);
}
PERL_ARGS_ASSERT_PARSE_GV_STASH_NAME;
- if (full_len > 2 && **name == '*' && isIDFIRST_lazy_if(*name + 1, is_utf8)) {
+ if ( full_len > 2
+ && **name == '*'
+ && isIDFIRST_lazy_if_safe(*name + 1, name_end, is_utf8))
+ {
/* accidental stringify on a GV? */
(*name)++;
}
*stash = GvHV(*gv) = newHV();
if (!HvNAME_get(*stash)) {
if (GvSTASH(*gv) == PL_defstash && *len == 6
- && strnEQ(*name, "CORE", 4))
- hv_name_set(*stash, "CORE", 4, 0);
+ && strEQs(*name, "CORE"))
+ hv_name_sets(*stash, "CORE", 0);
else
hv_name_set(
*stash, nambeg, name_cursor-nambeg, is_utf8
name_cursor++;
*name = name_cursor+1;
if (*name == name_end) {
- if (!*gv)
- *gv = MUTABLE_GV(*hv_fetchs(PL_defstash, "main::", TRUE));
+ if (!*gv) {
+ *gv = MUTABLE_GV(*hv_fetchs(PL_defstash, "main::", TRUE));
+ if (SvTYPE(*gv) != SVt_PVGV) {
+ gv_init_pvn(*gv, PL_defstash, "main::", 6,
+ GV_ADDMULTI);
+ GvHV(*gv) =
+ MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
+ }
+ }
return TRUE;
}
}
PERL_ARGS_ASSERT_GV_IS_IN_MAIN;
/* If it's an alphanumeric variable */
- if ( len && isIDFIRST_lazy_if(name, is_utf8) ) {
+ if ( len && isIDFIRST_lazy_if_safe(name, name + len, is_utf8) ) {
/* Some "normal" variables are always in main::,
* like INC or STDOUT.
*/
/* diag_listed_as: Variable "%s" is not imported%s */
Perl_ck_warner_d(
aTHX_ packWARN(WARN_MISC),
- "Variable \"%c%"UTF8f"\" is not imported",
+ "Variable \"%c%" UTF8f "\" is not imported",
sv_type == SVt_PVAV ? '@' :
sv_type == SVt_PVHV ? '%' : '$',
UTF8fARG(is_utf8, len, name));
if (GvCVu(*gvp))
Perl_ck_warner_d(
aTHX_ packWARN(WARN_MISC),
- "\t(Did you mean &%"UTF8f" instead?)\n",
+ "\t(Did you mean &%" UTF8f " instead?)\n",
UTF8fARG(is_utf8, len, name)
);
*stash = NULL;
if (!*stash) {
if (add && !PL_in_clean_all) {
- SV * const err = Perl_mess(aTHX_
- "Global symbol \"%s%"UTF8f
- "\" requires explicit package name",
+ GV *gv;
+ qerror(Perl_mess(aTHX_
+ "Global symbol \"%s%" UTF8f
+ "\" requires explicit package name (did you forget to "
+ "declare \"my %s%" UTF8f "\"?)",
(sv_type == SVt_PV ? "$"
: sv_type == SVt_PVAV ? "@"
: sv_type == SVt_PVHV ? "%"
- : ""), UTF8fARG(is_utf8, len, name));
- GV *gv;
- if (is_utf8)
- SvUTF8_on(err);
- qerror(err);
+ : ""), UTF8fARG(is_utf8, len, name),
+ (sv_type == SVt_PV ? "$"
+ : sv_type == SVt_PVAV ? "@"
+ : sv_type == SVt_PVHV ? "%"
+ : ""), UTF8fARG(is_utf8, len, name)));
/* To maintain the output of errors after the strict exception
* above, and to keep compat with older releases, rather than
* placing the variables in the pad, we place
return TRUE;
}
+/* gv_magicalize only turns on the SVf_READONLY flag, not SVf_PROTECT. So
+ redefine SvREADONLY_on for that purpose. We don’t use it later on in
+ this file. */
+#undef SvREADONLY_on
+#define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
+
/* gv_magicalize() is called by gv_fetchpvn_flags when creating
* a new GV.
* Note that it does not insert the GV into the stash prior to
* magicalization, which some variables require need in order
* to work (like $[, %+, %-, %!), so callers must take care of
- * that beforehand.
+ * that.
*
- * The return value has a specific meaning for gv_fetchpvn_flags:
- * If it returns true, and the gv is empty, it indicates that its
- * refcount should be decreased.
+ * It returns true if the gv did turn out to be magical one; i.e.,
+ * if gv_magicalize actually did something.
*/
PERL_STATIC_INLINE bool
S_gv_magicalize(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len,
- bool addmg, const svtype sv_type)
+ const svtype sv_type)
{
SSize_t paren;
and VERSION. All the others apply only to the main stash or to
CORE (which is checked right after this). */
if (len) {
- const char * const name2 = name + 1;
switch (*name) {
case 'E':
- if (strnEQ(name2, "XPORT", 5))
+ if (
+ len >= 6 && name[1] == 'X' &&
+ (memEQs(name, len, "EXPORT")
+ ||memEQs(name, len, "EXPORT_OK")
+ ||memEQs(name, len, "EXPORT_FAIL")
+ ||memEQs(name, len, "EXPORT_TAGS"))
+ )
GvMULTI_on(gv);
break;
case 'I':
- if (strEQ(name2, "SA"))
+ if (memEQs(name, len, "ISA"))
gv_magicalize_isa(gv);
break;
case 'V':
- if (strEQ(name2, "ERSION"))
+ if (memEQs(name, len, "VERSION"))
GvMULTI_on(gv);
break;
case 'a':
+ if (stash == PL_debstash && memEQs(name, len, "args")) {
+ GvMULTI_on(gv_AVadd(gv));
+ break;
+ }
+ /* FALLTHROUGH */
case 'b':
if (len == 1 && sv_type == SVt_PV)
GvMULTI_on(gv);
default:
goto try_core;
}
- return addmg;
+ goto ret;
}
try_core:
if (len > 1 /* shortest is uc */ && HvNAMELEN_get(stash) == 4) {
/* Avoid null warning: */
const char * const stashname = HvNAME(stash); assert(stashname);
- if (strnEQ(stashname, "CORE", 4))
+ if (strEQs(stashname, "CORE"))
S_maybe_add_coresub(aTHX_ 0, gv, name, len);
}
}
} else
#endif
{
- const char * const name2 = name + 1;
switch (*name) {
case 'A':
- if (strEQ(name2, "RGV")) {
+ if (memEQs(name, len, "ARGV")) {
IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START;
}
- else if (strEQ(name2, "RGVOUT")) {
+ else if (memEQs(name, len, "ARGVOUT")) {
GvMULTI_on(gv);
}
break;
case 'E':
- if (strnEQ(name2, "XPORT", 5))
+ if (
+ len >= 6 && name[1] == 'X' &&
+ (memEQs(name, len, "EXPORT")
+ ||memEQs(name, len, "EXPORT_OK")
+ ||memEQs(name, len, "EXPORT_FAIL")
+ ||memEQs(name, len, "EXPORT_TAGS"))
+ )
GvMULTI_on(gv);
break;
case 'I':
- if (strEQ(name2, "SA")) {
+ if (memEQs(name, len, "ISA")) {
gv_magicalize_isa(gv);
}
break;
case 'S':
- if (strEQ(name2, "IG")) {
+ if (memEQs(name, len, "SIG")) {
HV *hv;
I32 i;
if (!PL_psig_name) {
}
break;
case 'V':
- if (strEQ(name2, "ERSION"))
+ if (memEQs(name, len, "VERSION"))
GvMULTI_on(gv);
break;
case '\003': /* $^CHILD_ERROR_NATIVE */
- if (strEQ(name2, "HILD_ERROR_NATIVE"))
+ if (memEQs(name, len, "\003HILD_ERROR_NATIVE"))
goto magicalize;
+ /* @{^CAPTURE} %{^CAPTURE} */
+ if (memEQs(name, len, "\003APTURE")) {
+ AV* const av = GvAVn(gv);
+ UV uv= *name;
+
+ sv_magic(MUTABLE_SV(av), (SV*)uv, PERL_MAGIC_regdata, NULL, 0);
+ SvREADONLY_on(av);
+
+ if (sv_type == SVt_PVHV || sv_type == SVt_PVGV)
+ require_tie_mod_s(gv, '-', "Tie::Hash::NamedCapture",0);
+
+ } else /* %{^CAPTURE_ALL} */
+ if (memEQs(name, len, "\003APTURE_ALL")) {
+ if (sv_type == SVt_PVHV || sv_type == SVt_PVGV)
+ require_tie_mod_s(gv, '+', "Tie::Hash::NamedCapture",0);
+ }
break;
case '\005': /* $^ENCODING */
- if (strEQ(name2, "NCODING"))
+ if (memEQs(name, len, "\005NCODING"))
goto magicalize;
break;
case '\007': /* $^GLOBAL_PHASE */
- if (strEQ(name2, "LOBAL_PHASE"))
+ if (memEQs(name, len, "\007LOBAL_PHASE"))
goto ro_magicalize;
break;
case '\014': /* $^LAST_FH */
- if (strEQ(name2, "AST_FH"))
+ if (memEQs(name, len, "\014AST_FH"))
goto ro_magicalize;
break;
case '\015': /* $^MATCH */
- if (strEQ(name2, "ATCH")) {
+ if (memEQs(name, len, "\015ATCH")) {
paren = RX_BUFF_IDX_CARET_FULLMATCH;
goto storeparen;
}
break;
case '\017': /* $^OPEN */
- if (strEQ(name2, "PEN"))
+ if (memEQs(name, len, "\017PEN"))
goto magicalize;
break;
case '\020': /* $^PREMATCH $^POSTMATCH */
- if (strEQ(name2, "REMATCH")) {
+ if (memEQs(name, len, "\020REMATCH")) {
paren = RX_BUFF_IDX_CARET_PREMATCH;
goto storeparen;
}
- if (strEQ(name2, "OSTMATCH")) {
+ if (memEQs(name, len, "\020OSTMATCH")) {
paren = RX_BUFF_IDX_CARET_POSTMATCH;
goto storeparen;
}
break;
case '\024': /* ${^TAINT} */
- if (strEQ(name2, "AINT"))
+ if (memEQs(name, len, "\024AINT"))
goto ro_magicalize;
break;
case '\025': /* ${^UNICODE}, ${^UTF8LOCALE} */
- if (strEQ(name2, "NICODE"))
+ if (memEQs(name, len, "\025NICODE"))
goto ro_magicalize;
- if (strEQ(name2, "TF8LOCALE"))
+ if (memEQs(name, len, "\025TF8LOCALE"))
goto ro_magicalize;
- if (strEQ(name2, "TF8CACHE"))
+ if (memEQs(name, len, "\025TF8CACHE"))
goto magicalize;
break;
case '\027': /* $^WARNING_BITS */
- if (strEQ(name2, "ARNING_BITS"))
+ if (memEQs(name, len, "\027ARNING_BITS"))
+ goto magicalize;
+#ifdef WIN32
+ else if (memEQs(name, len, "\027IN32_SLOPPY_STAT"))
goto magicalize;
+#endif
break;
case '1':
case '2':
{
/* Ensures that we have an all-digit variable, ${"1foo"} fails
this test */
- /* This snippet is taken from is_gv_magical */
- const char *end = name + len;
- while (--end > name) {
- if (!isDIGIT(*end))
- return addmg;
- }
- paren = strtoul(name, NULL, 10);
+ UV uv;
+ if (!grok_atoUV(name, &uv, NULL) || uv > I32_MAX)
+ goto ret;
+ /* XXX why are we using a SSize_t? */
+ paren = (SSize_t)(I32)uv;
goto storeparen;
}
}
sv_magic(GvSVn(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, name, len);
- /* magicalization must be done before require_tie_mod is called */
+ /* magicalization must be done before require_tie_mod_s is called */
if (sv_type == SVt_PVHV || sv_type == SVt_PVGV)
- {
- require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1);
- addmg = FALSE;
- }
+ require_tie_mod_s(gv, '!', "Errno", 1);
break;
- case '-': /* $- */
- case '+': /* $+ */
- GvMULTI_on(gv); /* no used once warnings here */
- {
- AV* const av = GvAVn(gv);
- SV* const avc = (*name == '+') ? MUTABLE_SV(av) : NULL;
-
- sv_magic(MUTABLE_SV(av), avc, PERL_MAGIC_regdata, NULL, 0);
- sv_magic(GvSVn(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, name, len);
- if (avc)
- SvREADONLY_on(GvSVn(gv));
- SvREADONLY_on(av);
-
- if (sv_type == SVt_PVHV || sv_type == SVt_PVGV)
- {
- require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0);
- addmg = FALSE;
- }
+ case '-': /* $-, %-, @- */
+ case '+': /* $+, %+, @+ */
+ GvMULTI_on(gv); /* no used once warnings here */
+ { /* $- $+ */
+ sv_magic(GvSVn(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, name, len);
+ if (*name == '+')
+ SvREADONLY_on(GvSVn(gv));
+ }
+ { /* %- %+ */
+ if (sv_type == SVt_PVHV || sv_type == SVt_PVGV)
+ require_tie_mod_s(gv, *name, "Tie::Hash::NamedCapture",0);
+ }
+ { /* @- @+ */
+ AV* const av = GvAVn(gv);
+ const UV uv = (UV)*name;
+ sv_magic(MUTABLE_SV(av), (SV*)uv, PERL_MAGIC_regdata, NULL, 0);
+ SvREADONLY_on(av);
+ }
break;
- }
case '*': /* $* */
case '#': /* $# */
if (sv_type == SVt_PV)
- /* diag_listed_as: $* is no longer supported */
+ /* diag_listed_as: $* is no longer supported. Its use will be fatal in Perl 5.30 */
Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
- "$%c is no longer supported", *name);
+ "$%c is no longer supported. Its use "
+ "will be fatal in Perl 5.30", *name);
break;
case '\010': /* $^H */
{
case '[': /* $[ */
if ((sv_type == SVt_PV || sv_type == SVt_PVGV)
&& FEATURE_ARYBASE_IS_ENABLED) {
- require_tie_mod(gv,name,newSVpvs("arybase"),"FETCH",0);
- addmg = FALSE;
+ require_tie_mod_s(gv,'[',"arybase",0);
}
else goto magicalize;
break;
}
}
- return addmg;
+ ret:
+ /* Return true if we actually did something. */
+ return GvAV(gv) || GvHV(gv) || GvIO(gv) || GvCV(gv)
+ || ( GvSV(gv) && (
+ SvOK(GvSV(gv)) || SvMAGICAL(GvSV(gv))
+ )
+ );
}
+/* If we do ever start using this later on in the file, we need to make
+ sure we don’t accidentally use the wrong definition. */
+#undef SvREADONLY_on
+
/* This function is called when the stash already holds the GV of the magic
* variable we're looking for, but we need to check that it has the correct
* kind of magic. For example, if someone first uses $! and then %!, the
if (sv_type == SVt_PVHV || sv_type == SVt_PVGV) {
if (*name == '!')
- require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1);
+ require_tie_mod_s(gv, '!', "Errno", 1);
else if (*name == '-' || *name == '+')
- require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0);
+ require_tie_mod_s(gv, *name, "Tie::Hash::NamedCapture", 0);
} else if (sv_type == SVt_PV) {
if (*name == '*' || *name == '#') {
- /* diag_listed_as: $* is no longer supported */
+ /* diag_listed_as: $# is no longer supported. Its use will be fatal in Perl 5.30 */
Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED,
WARN_SYNTAX),
- "$%c is no longer supported", *name);
+ "$%c is no longer supported. Its use "
+ "will be fatal in Perl 5.30", *name);
}
}
if (sv_type==SVt_PV || sv_type==SVt_PVGV) {
switch (*name) {
case '[':
- require_tie_mod(gv,name,newSVpvs("arybase"),"FETCH",0);
+ require_tie_mod_s(gv,'[',"arybase",0);
break;
#ifdef PERL_SAWAMPERSAND
case '`':
Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags,
const svtype sv_type)
{
- dVAR;
const char *name = nambeg;
GV *gv = NULL;
GV**gvp;
maybe_multimagic_gv(gv, name, sv_type);
}
else if (len == 3 && sv_type == SVt_PVAV
- && strnEQ(name, "ISA", 3)
+ && strEQs(name, "ISA")
&& (!GvAV(gv) || !SvSMAGICAL(GvAV(gv))))
gv_magicalize_isa(gv);
}
if (add & GV_ADDWARN)
Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
- "Had to create %"UTF8f" unexpectedly",
+ "Had to create %" UTF8f " unexpectedly",
UTF8fARG(is_utf8, name_end-nambeg, nambeg));
gv_init_pvn(gv, stash, name, len, (add & GV_ADDMULTI)|is_utf8);
- if ( isIDFIRST_lazy_if(name, is_utf8) && !ckWARN(WARN_ONCE) )
+ if ( full_len != 0
+ && isIDFIRST_lazy_if_safe(name, name + full_len, is_utf8)
+ && !ckWARN(WARN_ONCE) )
+ {
GvMULTI_on(gv) ;
-
- /* First, store the gv in the symtab if we're adding magic,
- * but only for non-empty GVs
- */
-#define GvEMPTY(gv) !(GvAV(gv) || GvHV(gv) || GvIO(gv) \
- || GvCV(gv) || (GvSV(gv) && SvOK(GvSV(gv))))
-
- if ( addmg && !GvEMPTY(gv) ) {
- (void)hv_store(stash,name,len,(SV *)gv,0);
}
/* set up magic where warranted */
- if ( gv_magicalize(gv, stash, name, len, addmg, sv_type) ) {
+ if ( gv_magicalize(gv, stash, name, len, sv_type) ) {
/* See 23496c6 */
- if (GvEMPTY(gv)) {
- if ( GvSV(gv) && SvMAGICAL(GvSV(gv)) ) {
- /* The GV was and still is "empty", except that now
- * it has the magic flags turned on, so we want it
+ if (addmg) {
+ /* gv_magicalize magicalised this gv, so we want it
* stored in the symtab.
+ * Effectively the caller is asking, ‘Does this gv exist?’
+ * And we respond, ‘Er, *now* it does!’
*/
(void)hv_store(stash,name,len,(SV *)gv,0);
- }
- else {
- /* Most likely the temporary GV created above */
+ }
+ }
+ else if (addmg) {
+ /* The temporary GV created above */
SvREFCNT_dec_NN(gv);
gv = NULL;
- }
- }
}
if (gv) gv_init_svtype(gv, faking_it ? SVt_PVCV : sv_type);
void
Perl_gv_check(pTHX_ HV *stash)
{
- dVAR;
I32 i;
PERL_ARGS_ASSERT_GV_CHECK;
- if (!HvARRAY(stash))
+ if (!SvOOK(stash))
return;
- assert(SvOOK(stash));
+ assert(HvARRAY(stash));
for (i = 0; i <= (I32) HvMAX(stash); i++) {
const HE *entry;
for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
GV *gv;
HV *hv;
- if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
+ STRLEN keylen = HeKLEN(entry);
+ const char * const key = HeKEY(entry);
+
+ if (keylen >= 2 && key[keylen-2] == ':' && key[keylen-1] == ':' &&
(gv = MUTABLE_GV(HeVAL(entry))) && isGV(gv) && (hv = GvHV(gv)))
{
if (hv != PL_defstash && hv != stash
)
gv_check(hv); /* nested package */
}
- else if ( *HeKEY(entry) != '_'
- && isIDFIRST_lazy_if(HeKEY(entry), HeUTF8(entry)) ) {
+ else if ( HeKLEN(entry) != 0
+ && *HeKEY(entry) != '_'
+ && isIDFIRST_lazy_if_safe(HeKEY(entry),
+ HeKEY(entry) + HeKLEN(entry),
+ HeUTF8(entry)) )
+ {
const char *file;
gv = MUTABLE_GV(HeVAL(entry));
if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv))
= gv_fetchfile_flags(file, HEK_LEN(GvFILE_HEK(gv)), 0);
#endif
Perl_warner(aTHX_ packWARN(WARN_ONCE),
- "Name \"%"HEKf"::%"HEKf
+ "Name \"%" HEKf "::%" HEKf
"\" used only once: possible typo",
HEKfARG(HvNAME_HEK(stash)),
HEKfARG(GvNAME_HEK(gv)));
GV *
Perl_newGVgen_flags(pTHX_ const char *pack, U32 flags)
{
- dVAR;
PERL_ARGS_ASSERT_NEWGVGEN_FLAGS;
assert(!(flags & ~SVf_UTF8));
- return gv_fetchpv(Perl_form(aTHX_ "%"UTF8f"::_GEN_%ld",
+ return gv_fetchpv(Perl_form(aTHX_ "%" UTF8f "::_GEN_%ld",
UTF8fARG(flags, strlen(pack), pack),
(long)PL_gensym++),
GV_ADD, SVt_PVGV);
GP*
Perl_gp_ref(pTHX_ GP *gp)
{
- dVAR;
if (!gp)
return NULL;
gp->gp_refcnt++;
void
Perl_gp_free(pTHX_ GV *gv)
{
- dVAR;
GP* gp;
int attempts = 100;
Somehow gp->gp_hv can end up pointing at freed garbage. */
if (hv && SvTYPE(hv) == SVt_PVHV) {
const HEK *hvname_hek = HvNAME_HEK(hv);
- DEBUG_o(Perl_deb(aTHX_ "gp_free clearing PL_stashcache for '%"HEKf"'\n", hvname_hek));
- if (PL_stashcache && hvname_hek)
+ if (PL_stashcache && hvname_hek) {
+ DEBUG_o(Perl_deb(aTHX_
+ "gp_free clearing PL_stashcache for '%" HEKf "'\n",
+ HEKfARG(hvname_hek)));
(void)hv_deletehek(PL_stashcache, hvname_hek, G_DISCARD);
+ }
SvREFCNT_dec(hv);
}
+ if (io && SvREFCNT(io) == 1 && IoIFP(io)
+ && (IoTYPE(io) == IoTYPE_WRONLY ||
+ IoTYPE(io) == IoTYPE_RDWR ||
+ IoTYPE(io) == IoTYPE_APPEND)
+ && ckWARN_d(WARN_IO)
+ && IoIFP(io) != PerlIO_stdin()
+ && IoIFP(io) != PerlIO_stdout()
+ && IoIFP(io) != PerlIO_stderr()
+ && !(IoFLAGS(io) & IOf_FAKE_DIRP))
+ io_close(io, gv, FALSE, TRUE);
SvREFCNT_dec(io);
SvREFCNT_dec(cv);
SvREFCNT_dec(form);
int
Perl_Gv_AMupdate(pTHX_ HV *stash, bool destructing)
{
- dVAR;
MAGIC* const mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table);
AMT amt;
const struct mro_meta* stash_meta = HvMROMETA(stash);
numifying instead of C's "+0". */
gv = Perl_gv_fetchmeth_pvn(aTHX_ stash, cooky, l, -1, 0);
cv = 0;
- if (gv && (cv = GvCV(gv))) {
- if(GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil")){
- const char * const hvname = HvNAME_get(GvSTASH(CvGV(cv)));
- if (hvname && HEK_LEN(HvNAME_HEK(GvSTASH(CvGV(cv)))) == 8
- && strEQ(hvname, "overload")) {
+ if (gv && (cv = GvCV(gv)) && CvHASGV(cv)) {
+ const HEK * const gvhek =
+ CvNAMED(cv) ? CvNAME_HEK(cv) : GvNAME_HEK(CvGV(cv));
+ const HEK * const stashek =
+ HvNAME_HEK(CvNAMED(cv) ? CvSTASH(cv) : GvSTASH(CvGV(cv)));
+ if (HEK_LEN(gvhek) == 3 && strEQ(HEK_KEY(gvhek), "nil")
+ && stashek && HEK_LEN(stashek) == 8
+ && strEQ(HEK_KEY(stashek), "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 = NULL;
SV *gvsv = GvSV(gv);
- DEBUG_o( Perl_deb(aTHX_ "Resolving method \"%"SVf256\
+ DEBUG_o( Perl_deb(aTHX_ "Resolving method \"%" SVf256\
"\" for overloaded \"%s\" in package \"%.256s\"\n",
(void*)GvSV(gv), cp, HvNAME(stash)) );
if (!gvsv || !SvPOK(gvsv)
? gvsv
: newSVpvs_flags("???", SVs_TEMP);
/* diag_listed_as: Can't resolve method "%s" overloading "%s" in package "%s" */
- Perl_croak(aTHX_ "%s method \"%"SVf256
+ Perl_croak(aTHX_ "%s method \"%" SVf256
"\" overloading \"%s\" "\
- "in package \"%"HEKf256"\"",
+ "in package \"%" HEKf256 "\"",
(GvCVGEN(gv) ? "Stub found while resolving"
: "Can't resolve"),
SVfARG(name), cp,
}
}
cv = GvCV(gv = ngv);
- }
}
DEBUG_o( Perl_deb(aTHX_ "Overloading \"%s\" in package \"%.256s\" via \"%.256s::%.256s\"\n",
cp, HvNAME_get(stash), HvNAME_get(GvSTASH(CvGV(cv))),
CV*
Perl_gv_handler(pTHX_ HV *stash, I32 id)
{
- dVAR;
MAGIC *mg;
AMT *amtp;
U32 newgen;
bool
Perl_try_amagic_un(pTHX_ int method, int flags) {
- dVAR;
dSP;
SV* tmpsv;
SV* const arg = TOPs;
SvGETMAGIC(arg);
if (SvAMAGIC(arg) && (tmpsv = amagic_call(arg, &PL_sv_undef, method,
- AMGf_noright | AMGf_unary))) {
+ AMGf_noright | AMGf_unary
+ | (flags & AMGf_numarg))))
+ {
if (flags & AMGf_set) {
SETs(tmpsv);
}
bool
Perl_try_amagic_bin(pTHX_ int method, int flags) {
- dVAR;
dSP;
SV* const left = TOPm1s;
SV* const right = TOPs;
if (SvAMAGIC(left) || SvAMAGIC(right)) {
SV * const tmpsv = amagic_call(left, right, method,
- ((flags & AMGf_assign) && opASSIGN ? AMGf_assign: 0));
+ ((flags & AMGf_assign) && opASSIGN ? AMGf_assign: 0)
+ | (flags & AMGf_numarg));
if (tmpsv) {
if (flags & AMGf_set) {
(void)POPs;
case regexp_amg:
/* FAIL safe */
return NULL; /* Delegate operation to standard mechanisms. */
- break;
+
case to_sv_amg:
case to_av_amg:
case to_hv_amg:
case to_cv_amg:
/* FAIL safe */
return left; /* Delegate operation to standard mechanisms. */
- break;
+
default:
goto not_found;
}
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;
SV *msg;
if (off==-1) off=method;
msg = sv_2mortal(Perl_newSVpvf(aTHX_
- "Operation \"%s\": no method found,%sargument %s%"SVf"%s%"SVf,
+ "Operation \"%s\": no method found,%sargument %s%" SVf "%s%" SVf,
AMG_id2name(method + assignshift),
(flags & AMGf_unary ? " " : "\n\tleft "),
SvAMAGIC(left)?
SVfARG(sv_2mortal(newSVhek(HvNAME_HEK(SvSTASH(SvRV(right)))))):
SVfARG(&PL_sv_no)));
if (use_default_op) {
- DEBUG_o( Perl_deb(aTHX_ "%"SVf, SVfARG(msg)) );
+ DEBUG_o( Perl_deb(aTHX_ "%" SVf, SVfARG(msg)) );
} else {
- Perl_croak(aTHX_ "%"SVf, SVfARG(msg));
+ Perl_croak(aTHX_ "%" SVf, SVfARG(msg));
}
return NULL;
}
case band_amg:
case bor_amg:
case bxor_amg:
+ case sband_amg:
+ case sbor_amg:
+ case sbxor_amg:
if (assign)
force_scalar = 1;
break;
#ifdef DEBUGGING
if (!notfound) {
DEBUG_o(Perl_deb(aTHX_
- "Overloaded operator \"%s\"%s%s%s:\n\tmethod%s found%s in package %"SVf"%s\n",
+ "Overloaded operator \"%s\"%s%s%s:\n\tmethod%s found%s in package %" SVf "%s\n",
AMG_id2name(off),
method+assignshift==off? "" :
" (initially \"",
SV* res;
const bool oldcatch = CATCH_GET;
I32 oldmark, nret;
- int gimme = force_scalar ? G_SCALAR : GIMME_V;
+ U8 gimme = force_scalar ? G_SCALAR : GIMME_V;
CATCH_SET(TRUE);
Zero(&myop, 1, BINOP);
PUSHs(newSVpvn_flags(AMG_id2name(method + assignshift),
AMG_id2namelen(method + assignshift), SVs_TEMP));
}
+ else if (flags & AMGf_numarg)
+ PUSHs(&PL_sv_undef);
+ if (flags & AMGf_numarg)
+ PUSHs(&PL_sv_yes);
PUSHs(MUTABLE_SV(cv));
PUTBACK;
oldmark = TOPMARK;
PERL_ARGS_ASSERT_GV_NAME_SET;
if (len > I32_MAX)
- Perl_croak(aTHX_ "panic: gv name too long (%"UVuf")", (UV) len);
+ Perl_croak(aTHX_ "panic: gv name too long (%" UVuf ")", (UV) len);
if (!(flags & GV_ADD) && GvNAME_HEK(gv)) {
unshare_hek(GvNAME_HEK(gv));
(void)hv_deletehek(stash, gvnhek, G_DISCARD);
} else if (GvMULTI(gv) && cv && SvREFCNT(cv) == 1 &&
!SvOBJECT(cv) && !SvMAGICAL(cv) && !SvREADONLY(cv) &&
- CvSTASH(cv) == stash && CvGV(cv) == gv &&
+ CvSTASH(cv) == stash && !CvNAMED(cv) && CvGV(cv) == gv &&
CvCONST(cv) && !CvMETHOD(cv) && !CvLVALUE(cv) && !CvUNIQUE(cv) &&
!CvNODEBUG(cv) && !CvCLONE(cv) && !CvCLONED(cv) && !CvANON(cv) &&
(namehek = GvNAME_HEK(gv)) &&
sv_clear((SV*)gv);
SvREFCNT(gv) = 1;
SvFLAGS(gv) = SVt_IV|SVf_ROK|SVprv_PCS_IMPORTED * imported;
+
+ /* See also: 'SET_SVANY_FOR_BODYLESS_IV' in sv.c */
SvANY(gv) = (XPVGV*)((char*)&(gv->sv_u.svu_iv) -
STRUCT_OFFSET(XPVIV, xiv_iv));
SvRV_set(gv, value);
}
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
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