*/
/*
-=head1 GV Functions
+=head1 GV Handling
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.
GVs are usually found as values in stashes (symbol table hashes) where
Perl stores its global variables.
+=for apidoc Ayh||GV
+
=cut
*/
if (!*where)
{
*where = newSV_type(type);
- if (type == SVt_PVAV && GvNAMELEN(gv) == 3
- && strnEQ(GvNAME(gv), "ISA", 3))
+ if (type == SVt_PVAV
+ && memEQs(GvNAME(gv), GvNAMELEN(gv), "ISA"))
sv_magic(*where, (SV *)gv, PERL_MAGIC_isa, NULL, 0);
}
return gv;
#ifndef USE_ITHREADS
GV *filegv;
#endif
- dVAR;
PERL_ARGS_ASSERT_NEWGP;
Newxz(gp, 1, GP);
C<GV_ADDMULTI> flag, which means to pretend that the GV has been
seen before (i.e., suppress "Used once" warnings).
+=for apidoc Amnh||GV_ADDMULTI
+
=for apidoc gv_init
The old form of C<gv_init_pvn()>. It does not work with UTF-8 strings, as it
const U32 proto_utf8 = proto ? SvUTF8(gv) : 0;
SV *const has_constant = doproto && SvROK(gv) ? SvRV(gv) : NULL;
const U32 exported_constant = has_constant ? SvPCS_IMPORTED(gv) : 0;
+ const bool really_sub =
+ has_constant && SvTYPE(has_constant) == SVt_PVCV;
+ COP * const old = PL_curcop;
PERL_ARGS_ASSERT_GV_INIT_PVN;
assert (!(proto && has_constant));
case SVt_PVIO:
Perl_croak(aTHX_ "Cannot convert a reference to %s to typeglob",
sv_reftype(has_constant, 0));
+ NOT_REACHED; /* NOTREACHED */
break;
default: NOOP;
SvIOK_off(gv);
isGV_with_GP_on(gv);
+ if (really_sub && !CvISXSUB(has_constant) && CvSTART(has_constant)
+ && ( CvSTART(has_constant)->op_type == OP_NEXTSTATE
+ || CvSTART(has_constant)->op_type == OP_DBSTATE))
+ PL_curcop = (COP *)CvSTART(has_constant);
GvGP_set(gv, Perl_newGP(aTHX_ gv));
+ PL_curcop = old;
GvSTASH(gv) = stash;
if (stash)
Perl_sv_add_backref(aTHX_ MUTABLE_SV(stash), MUTABLE_SV(gv));
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 (has_constant && SvTYPE(has_constant) == SVt_PVCV) {
+ if (really_sub) {
/* Not actually a constant. Just a regular sub. */
CV * const cv = (CV *)has_constant;
GvCV_set(gv,cv);
- if (CvSTASH(cv) == stash && (
+ if (CvNAMED(cv) && 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))
case KEY_do : case KEY_dump : case KEY_else : case KEY_elsif :
case KEY_END : case KEY_eq : case KEY_eval :
case KEY_for : case KEY_foreach: case KEY_format: case KEY_ge :
- case KEY_given : case KEY_goto : case KEY_grep :
- case KEY_gt : case KEY_if: case KEY_INIT: case KEY_last: case KEY_le:
- case KEY_local: case KEY_lt: case KEY_m : case KEY_map : case KEY_my:
+ case KEY_given : case KEY_goto : case KEY_grep : case KEY_gt :
+ case KEY_if : case KEY_isa : case KEY_INIT : case KEY_last :
+ case KEY_le : case KEY_local : case KEY_lt : case KEY_m :
+ case KEY_map : case KEY_my:
case KEY_ne : case KEY_next : case KEY_no: case KEY_or: case KEY_our:
case KEY_package: case KEY_print: case KEY_printf:
case KEY_q : case KEY_qq : case KEY_qr : case KEY_qw :
PL_compcv = oldcompcv;
}
if (cv) {
- SV *opnumsv = opnum ? newSVuv((UV)opnum) : (SV *)NULL;
- cv_set_call_checker(
- cv, Perl_ck_entersub_args_core, opnumsv ? opnumsv : (SV *)cv
- );
- SvREFCNT_dec(opnumsv);
+ SV *opnumsv = newSViv(
+ (opnum == OP_ENTEREVAL && len == 9 && memEQ(name, "evalbytes", 9)) ?
+ (OP_ENTEREVAL | (1<<16))
+ : opnum ? opnum : (((I32)name[2]) << 16));
+ cv_set_call_checker_flags(cv, Perl_ck_entersub_args_core, opnumsv, 0);
+ SvREFCNT_dec_NN(opnumsv);
}
return gv;
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);
+ return gv_fetchmeth_internal(stash, namesv, NULL, 0, level,
+ flags | SvUTF8(namesv));
namepv = SvPV(namesv, namelen);
if (SvUTF8(namesv)) flags |= SVf_UTF8;
return gv_fetchmeth_pvn(stash, namepv, namelen, level, flags);
the GV directly; instead, you should use the method's CV, which can be
obtained from the GV with the C<GvCV> macro.
+=for apidoc Amnh||GV_SUPER
+
=cut
*/
CV* cand_cv = NULL;
GV* topgv = NULL;
const char *hvname;
+ STRLEN hvnamelen;
I32 create = (level >= 0) ? HV_FETCH_LVALUE : 0;
I32 items;
U32 topgen_cmp;
assert(stash);
hvname = HvNAME_get(stash);
+ hvnamelen = HvNAMELEN_get(stash);
if (!hvname)
Perl_croak(aTHX_ "Can't use anonymous symbol table for method lookup");
/* check locally for a real method or a cache entry */
he = (HE*)hv_common(
- cachestash, meth, name, len, (flags & SVf_UTF8) ? HVhek_UTF8 : 0, create, NULL, 0
+ cachestash, meth, name, len, is_utf8 ? HVhek_UTF8 : 0, create, NULL, 0
);
if (he) gvp = (GV**)&HeVAL(he);
else gvp = NULL;
return 0;
}
else if (stash == cachestash
- && len > 1 /* shortest is uc */ && HvNAMELEN_get(stash) == 4
- && strnEQ(hvname, "CORE", 4)
+ && len > 1 /* shortest is uc */
+ && memEQs(hvname, HvNAMELEN_get(stash), "CORE")
&& S_maybe_add_coresub(aTHX_ NULL,topgv,name,len))
goto have_gv;
}
cstash = gv_stashsv(linear_sv, 0);
if (!cstash) {
- Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),
- "Can't locate package %"SVf" for @%"HEKf"::ISA",
- SVfARG(linear_sv),
- HEKfARG(HvNAME_HEK(stash)));
+ if ( ckWARN(WARN_SYNTAX)) {
+ if( /* these are loaded from Perl_Gv_AMupdate() one way or another */
+ ( len && name[0] == '(' ) /* overload.pm related, in particular "()" */
+ || ( memEQs( name, len, "DESTROY") )
+ ) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),
+ "Can't locate package %" SVf " for @%" HEKf "::ISA",
+ SVfARG(linear_sv),
+ HEKfARG(HvNAME_HEK(stash)));
+
+ } else if( memEQs( name, len, "AUTOLOAD") ) {
+ /* gobble this warning */
+ } else {
+ Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),
+ "While trying to resolve method call %.*s->%.*s()"
+ " can not locate package \"%" SVf "\" yet it is mentioned in @%.*s::ISA"
+ " (perhaps you forgot to load \"%" SVf "\"?)",
+ (int) hvnamelen, hvname,
+ (int) len, name,
+ SVfARG(linear_sv),
+ (int) hvnamelen, hvname,
+ SVfARG(linear_sv));
+ }
+ }
continue;
}
assert(cstash);
- gvp = (GV**)hv_fetch(cstash, name, is_utf8 ? -(I32)len : (I32)len, 0);
+ gvp = (GV**)hv_common(
+ cstash, meth, name, len, is_utf8 ? HVhek_UTF8 : 0, HV_FETCH_JUST_SV, NULL, 0
+ );
if (!gvp) {
if (len > 1 && HvNAMELEN_get(cstash) == 4) {
const char *hvname = HvNAME(cstash); assert(hvname);
- if (strnEQ(hvname, "CORE", 4)
+ if (strBEGINs(hvname, "CORE")
&& (candidate =
S_maybe_add_coresub(aTHX_ cstash,NULL,name,len)
))
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)
{
- 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 &&
+ strBEGINs(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) {
- if (strEQ(name,"import") || strEQ(name,"unimport"))
- gv = MUTABLE_GV(&PL_sv_yes);
- else if (autoload)
+ /* 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 = (GV*)sv_2mortal((SV*)newCONSTSUB_flags(NULL,
+ NULL, 0, 0, NULL));
+ } 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));
}
}
return NULL;
/*
- * Inheriting AUTOLOAD for non-methods works ... for now.
+ * Inheriting AUTOLOAD for non-methods no longer works
*/
if (
!(flags & GV_AUTOLOAD_ISMETHOD)
&& (GvCVGEN(gv) || GvSTASH(gv) != stash)
)
- Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
- "Use of inherited AUTOLOAD for non-method %"SVf
- "::%"UTF8f"() is deprecated",
+ Perl_croak(aTHX_ "Use of inherited AUTOLOAD for non-method %" SVf
+ "::%" UTF8f "() is no longer allowed",
SVfARG(packname),
UTF8fARG(is_utf8, len, name));
if (SvUTF8(cv))
sv_utf8_upgrade_flags_grow(tmpsv, 0, CvPROTOLEN(cv) + 2);
ulen = SvCUR(tmpsv);
- SvCUR(tmpsv)++; /* include null in string */
+ SvCUR_set(tmpsv, SvCUR(tmpsv) + 1); /* include null in string */
sv_catpvn_flags(
tmpsv, proto, CvPROTOLEN(cv), SV_CATBYTES*!SvUTF8(cv)
);
sv_setsv_nomg((SV *)cv, tmpsv);
SvTEMP_off(tmpsv);
SvREFCNT_dec_NN(tmpsv);
- SvLEN(cv) = SvCUR(cv) + 1;
- SvCUR(cv) = ulen;
+ SvLEN_set(cv, SvCUR(cv) + 1);
+ SvCUR_set(cv, ulen);
}
else {
sv_setpvn((SV *)cv, name, len);
/* 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 $! to work (it is set by this routine)
* the sv slot must already be magicalized.
*/
-STATIC HV*
-S_require_tie_mod(pTHX_ GV *gv, const char *varpv, SV* namesv, const char *methpv,const U32 flags)
+STATIC void
+S_require_tie_mod(pTHX_ GV *gv, const char varname, const char * name,
+ STRLEN len, const U32 flags)
{
- HV* stash = gv_stashsv(namesv, 0);
+ const SV * const target = varname == '[' ? GvSV(gv) : (SV *)GvHV(gv);
PERL_ARGS_ASSERT_REQUIRE_TIE_MOD;
- if (!stash || !(gv_fetchmethod_autoload(stash, methpv, FALSE))) {
- SV *module = newSVsv(namesv);
- char varname = *varpv; /* varpv might be clobbered by load_module,
- so save it. For the moment it's always
- a single char. */
+ /* If it is not tied */
+ if (!target || !SvRMAGICAL(target)
+ || !mg_find(target,
+ varname == '[' ? PERL_MAGIC_tiedscalar : PERL_MAGIC_tied))
+ {
+ HV *stash;
+ GV **gvp;
+ dSP;
+
+ PUSHSTACKi(PERLSI_MAGIC);
+ ENTER;
+
+#define GET_HV_FETCH_TIE_FUNC \
+ ( (gvp = (GV **)hv_fetchs(stash, "_tie_it", 0)) \
+ && *gvp \
+ && ( (isGV(*gvp) && GvCV(*gvp)) \
+ || (SvROK(*gvp) && SvTYPE(SvRV(*gvp)) == SVt_PVCV) ) \
+ )
+
+ /* Load the module if it is not loaded. */
+ if (!(stash = gv_stashpvn(name, len, 0))
+ || ! GET_HV_FETCH_TIE_FUNC)
+ {
+ SV * const module = newSVpvn(name, len);
const char type = varname == '[' ? '$' : '%';
-#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 (! GET_HV_FETCH_TIE_FUNC)
+ 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);
+ PUSHMARK(SP);
+ XPUSHs((SV *)gv);
+ PUTBACK;
+ call_sv((SV *)*gvp, G_VOID|G_DISCARD);
+ LEAVE;
+ POPSTACK;
}
- 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
Note, use of C<gv_stashsv> instead of C<gv_stashpvn> where possible is strongly
recommended for performance reasons.
+=for apidoc Amnh||GV_ADD
+=for apidoc Amnh||GV_NOADD_NOINIT
+=for apidoc Amnh||GV_NOINIT
+=for apidoc Amnh||GV_NOEXPAND
+=for apidoc Amnh||GV_ADDMG
+=for apidoc Amnh||SVf_UTF8
+
=cut
*/
gv_stashsvpvn_cached
Returns a pointer to the stash for a specified package, possibly
-cached. Implements both C<gv_stashpvn> and C<gc_stashsv>.
+cached. Implements both C<L</gv_stashpvn>> and C<L</gv_stashsv>>.
-Requires one of either namesv or namepv to be non-null.
+Requires one of either C<namesv> or C<namepv> to be non-null.
-See C<L</gv_stashpvn>> for details on "flags".
+See C<L</gv_stashpvn>> for details on C<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*
+Perl_gv_stashsvpvn_cached(pTHX_ SV *namesv, const char *name, U32 namelen, I32 flags)
{
HV* stash;
HE* he;
(flags & SVf_UTF8) ? HVhek_UTF8 : 0, 0, NULL, 0
);
- if (he) return INT2PTR(HV*,SvIVX(HeVAL(he)));
+ if (he) {
+ SV *sv = HeVAL(he);
+ HV *hv;
+ assert(SvIOK(sv));
+ hv = INT2PTR(HV*, SvIVX(sv));
+ assert(SvTYPE(hv) == SVt_PVHV);
+ return hv;
+ }
else if (flags & GV_CACHE_ONLY) return NULL;
if (namesv) {
PERL_ARGS_ASSERT_GV_STASHSV;
return gv_stashsvpvn_cached(sv, NULL, 0, flags);
}
-
-
GV *
-Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, const svtype sv_type) {
+Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 flags, const svtype sv_type) {
PERL_ARGS_ASSERT_GV_FETCHPV;
- return gv_fetchpvn_flags(nambeg, strlen(nambeg), add, sv_type);
+ return gv_fetchpvn_flags(nambeg, strlen(nambeg), flags, sv_type);
}
GV *
STRLEN *len, const char *nambeg, STRLEN full_len,
const U32 is_utf8, const I32 add)
{
+ char *tmpfullbuf = NULL; /* only malloc one big chunk of memory when the smallbuff is not large enough */
const char *name_cursor;
const char *const name_end = nambeg + full_len;
const char *const name_em1 = name_end - 1;
+ char smallbuf[64]; /* small buffer to avoid a malloc when possible */
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)++;
}
if (!*stash)
*stash = PL_defstash;
if (!*stash || !SvREFCNT(*stash)) /* symbol table under destruction */
- return FALSE;
+ goto notok;
*len = name_cursor - *name;
if (name_cursor > nambeg) { /* Skip for initial :: or ' */
key = *name;
*len += 2;
}
- else {
+ else { /* using ' for package separator */
+ /* use our pre-allocated buffer when possible to save a malloc */
char *tmpbuf;
- Newx(tmpbuf, *len+2, char);
+ if ( *len+2 <= sizeof smallbuf)
+ tmpbuf = smallbuf;
+ else {
+ /* only malloc once if needed */
+ if (tmpfullbuf == NULL) /* only malloc&free once, a little more than needed */
+ Newx(tmpfullbuf, full_len+2, char);
+ tmpbuf = tmpfullbuf;
+ }
Copy(*name, tmpbuf, *len, char);
tmpbuf[(*len)++] = ':';
tmpbuf[(*len)++] = ':';
}
gvp = (GV**)hv_fetch(*stash, key, is_utf8 ? -((I32)*len) : (I32)*len, add);
*gv = gvp ? *gvp : NULL;
- if (*gv && *gv != (const GV *)&PL_sv_undef) {
- if (SvTYPE(*gv) != SVt_PVGV)
- gv_init_pvn(*gv, *stash, key, *len, (add & GV_ADDMULTI)|is_utf8);
- else
- GvMULTI_on(*gv);
+ if (!*gv || *gv == (const GV *)&PL_sv_undef) {
+ goto notok;
}
- if (key != *name)
- Safefree(key);
- if (!*gv || *gv == (const GV *)&PL_sv_undef)
- return FALSE;
+ /* here we know that *gv && *gv != &PL_sv_undef */
+ if (SvTYPE(*gv) != SVt_PVGV)
+ gv_init_pvn(*gv, *stash, key, *len, (add & GV_ADDMULTI)|is_utf8);
+ else
+ GvMULTI_on(*gv);
if (!(*stash = GvHV(*gv))) {
*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);
+ && strBEGINs(*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));
- return 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));
+ }
+ }
+ goto ok;
}
}
}
*len = name_cursor - *name;
+ ok:
+ Safefree(tmpfullbuf); /* free our tmpfullbuf if it was used */
return TRUE;
+ notok:
+ Safefree(tmpfullbuf); /* free our tmpfullbuf if it was used */
+ return FALSE;
}
+
/* Checks if an unqualified name is in the main stash */
PERL_STATIC_INLINE bool
S_gv_is_in_main(pTHX_ const char *name, STRLEN len, const U32 is_utf8)
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 ? '%' : '$',
UTF8fARG(is_utf8, len, name));
if (GvCVu(*gvp))
Perl_ck_warner_d(
aTHX_ packWARN(WARN_MISC),
- "\t(Did you mean &%"UTF8f" instead?)\n",
+ "\t(Did you mean &%" UTF8f " instead?)\n",
UTF8fARG(is_utf8, len, name)
);
*stash = NULL;
if (add && !PL_in_clean_all) {
GV *gv;
qerror(Perl_mess(aTHX_
- "Global symbol \"%s%"UTF8f
+ "Global symbol \"%s%" UTF8f
"\" requires explicit package name (did you forget to "
- "declare \"my %s%"UTF8f"\"?)",
+ "declare \"my %s%" UTF8f "\"?)",
(sv_type == SVt_PV ? "$"
: sv_type == SVt_PVAV ? "@"
: sv_type == SVt_PVHV ? "%"
* 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.
+ * to work (like %+, %-, %!), so callers must take care of
+ * 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 (strBEGINs(stashname, "CORE"))
S_maybe_add_coresub(aTHX_ 0, gv, name, len);
}
}
} else
#endif
{
- const char * 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);
+ const Size_t n = *name;
+
+ sv_magic(MUTABLE_SV(av), (SV*)n, PERL_MAGIC_regdata, NULL, 0);
+ SvREADONLY_on(av);
+
+ require_tie_mod_s(gv, '+', "Tie::Hash::NamedCapture",0);
+
+ } else /* %{^CAPTURE_ALL} */
+ if (memEQs(name, len, "\003APTURE_ALL")) {
+ require_tie_mod_s(gv, '-', "Tie::Hash::NamedCapture",0);
+ }
break;
case '\005': /* $^ENCODING */
- if (*name2 == '_') {
- name2++;
- }
- 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 '\023':
+ if (memEQs(name, len, "\023AFE_LOCALES"))
+ goto ro_magicalize;
+ 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 (strEQ(name2, "IN32_SLOPPY_STAT"))
+ else if (memEQs(name, len, "\027IN32_SLOPPY_STAT"))
goto magicalize;
#endif
break;
this test */
UV uv;
if (!grok_atoUV(name, &uv, NULL) || uv > I32_MAX)
- return addmg;
+ 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 Size_t n = *name;
+ sv_magic(MUTABLE_SV(av), (SV*)n, PERL_MAGIC_regdata, NULL, 0);
+ SvREADONLY_on(av);
+ }
break;
- }
case '*': /* $* */
case '#': /* $# */
- if (sv_type == SVt_PV)
- /* diag_listed_as: $* is no longer supported */
- Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
- "$%c is no longer supported", *name);
- break;
+ if (sv_type == SVt_PV)
+ /* diag_listed_as: $* is no longer supported as of Perl 5.30 */
+ Perl_croak(aTHX_ "$%c is no longer supported as of Perl 5.30", *name);
+ break;
case '\010': /* $^H */
{
HV *const hv = GvHVn(gv);
hv_magic(hv, NULL, PERL_MAGIC_hints);
}
goto magicalize;
- 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;
- }
- else goto magicalize;
- break;
case '\023': /* $^S */
ro_magicalize:
SvREADONLY_on(GvSVn(gv));
case '/': /* $/ */
case '|': /* $| */
case '$': /* $$ */
+ case '[': /* $[ */
case '\001': /* $^A */
case '\003': /* $^C */
case '\004': /* $^D */
}
}
- 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
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: $* is no longer supported */
- Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED,
- WARN_SYNTAX),
- "$%c is no longer supported", *name);
+ /* diag_listed_as: $* is no longer supported as of Perl 5.30 */
+ Perl_croak(aTHX_ "$%c is no longer supported as of 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);
- break;
#ifdef PERL_SAWAMPERSAND
case '`':
PL_sawampersand |= SAWAMPERSAND_LEFT;
}
}
+/*
+=for apidoc gv_fetchpv
+=for apidoc_item |GV *|gv_fetchpvn|const char * nambeg|STRLEN full_len|I32 flags|const svtype sv_type
+=for apidoc_item ||gv_fetchpvn_flags
+=for apidoc_item |GV *|gv_fetchpvs|"name"|I32 flags|const svtype sv_type
+=for apidoc_item ||gv_fetchsv
+=for apidoc_item |GV *|gv_fetchsv_nomg|SV *name|I32 flags|const svtype sv_type
+
+These all return the GV of type C<sv_type> whose name is given by the inputs,
+or NULL if no GV of that name and type could be found. See L<perlguts/Stashes
+and Globs>.
+
+The only differences are how the input name is specified, and if 'get' magic is
+normally used in getting that name.
+
+Don't be fooled by the fact that only one form has C<flags> in its name. They
+all have a C<flags> parameter in fact, and all the flag bits have the same
+meanings for all
+
+If any of the flags C<GV_ADD>, C<GV_ADDMG>, C<GV_ADDWARN>, C<GV_ADDMULTI>, or
+C<GV_NOINIT> is set, a GV is created if none already exists for the input name
+and type. However, C<GV_ADDMG> will only do the creation for magical GV's.
+For all of these flags except C<GV_NOINIT>, C<L</gv_init_pvn>> is called after
+the addition. C<GV_ADDWARN> is used when the caller expects that adding won't
+be necessary because the symbol should already exist; but if not, add it
+anyway, with a warning that it was unexpectedly absent. The C<GV_ADDMULTI>
+flag means to pretend that the GV has been seen before (I<i.e.>, suppress "Used
+once" warnings).
+
+The flag C<GV_NOADD_NOINIT> causes C<L</gv_init_pvn>> not be to called if the
+GV existed but isn't PVGV.
+
+If the C<SVf_UTF8> bit is set, the name is treated as being encoded in UTF-8;
+otherwise the name won't be considered to be UTF-8 in the C<pv>-named forms,
+and the UTF-8ness of the underlying SVs will be used in the C<sv> forms.
+
+If the flag C<GV_NOTQUAL> is set, the caller warrants that the input name is a
+plain symbol name, not qualified with a package, otherwise the name is checked
+for being a qualified one.
+
+In C<gv_fetchpv>, C<nambeg> is a C string, NUL-terminated with no intermediate
+NULs.
+
+In C<gv_fetchpvs>, C<name> is a literal C string, hence is enclosed in
+double quotes.
+
+C<gv_fetchpvn> and C<gv_fetchpvn_flags> are identical. In these, <nambeg> is
+a Perl string whose byte length is given by C<full_len>, and may contain
+embedded NULs.
+
+In C<gv_fetchsv> and C<gv_fetchsv_nomg>, the name is extracted from the PV of
+the input C<name> SV. The only difference between these two forms is that
+'get' magic is normally done on C<name> in C<gv_fetchsv>, and always skipped
+with C<gv_fetchsv_nomg>. Including C<GV_NO_SVGMAGIC> in the C<flags> parameter
+to C<gv_fetchsv> makes it behave identically to C<gv_fetchsv_nomg>.
+
+=for apidoc Amnh||GV_ADD
+=for apidoc Amnh||GV_ADDMG
+=for apidoc Amnh||GV_ADDMULTI
+=for apidoc Amnh||GV_ADDWARN
+=for apidoc Amnh||GV_NOADD_NOINIT
+=for apidoc Amnh||GV_NOINIT
+=for apidoc Amnh||GV_NOTQUAL
+=for apidoc Amnh||GV_NO_SVGMAGIC
+=for apidoc Amnh||SVf_UTF8
+
+=cut
+*/
+
GV *
Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags,
const svtype sv_type)
/* By this point we should have a stash and a name */
gvp = (GV**)hv_fetch(stash,name,is_utf8 ? -(I32)len : (I32)len,add);
if (!gvp || *gvp == (const GV *)&PL_sv_undef) {
- if (addmg) gv = (GV *)newSV(0);
+ if (addmg) gv = (GV *)newSV(0); /* tentatively */
else return NULL;
}
else gv = *gvp, addmg = 0;
if (len == 1 && stash == PL_defstash) {
maybe_multimagic_gv(gv, name, sv_type);
}
- else if (len == 3 && sv_type == SVt_PVAV
- && strnEQ(name, "ISA", 3)
+ else if (sv_type == SVt_PVAV
+ && memEQs(name, len, "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);
if (hv && (name = HvNAME(hv))) {
const STRLEN len = HvNAMELEN(hv);
- if (keepmain || strnNE(name, "main", len)) {
+ if (keepmain || ! memBEGINs(name, len, "main")) {
sv_catpvn_flags(sv,name,len,HvNAMEUTF8(hv)?SV_CATUTF8:SV_CATBYTES);
sv_catpvs(sv,"::");
}
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;
)
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)));
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);
const HEK *hvname_hek = HvNAME_HEK(hv);
if (PL_stashcache && hvname_hek) {
DEBUG_o(Perl_deb(aTHX_
- "gp_free clearing PL_stashcache for '%"HEKf"'\n",
+ "gp_free clearing PL_stashcache for '%" HEKf "'\n",
HEKfARG(hvname_hek)));
(void)hv_deletehek(PL_stashcache, hvname_hek, G_DISCARD);
}
gv = Perl_gv_fetchmeth_pvn(aTHX_ stash, cooky, l, -1, 0);
cv = 0;
if (gv && (cv = GvCV(gv)) && CvHASGV(cv)) {
- const HEK * const gvhek =
- CvNAMED(cv) ? CvNAME_HEK(cv) : GvNAME_HEK(CvGV(cv));
+ const HEK * const gvhek = CvGvNAME_HEK(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")) {
+ if (memEQs(HEK_KEY(gvhek), HEK_LEN(gvhek), "nil")
+ && stashek
+ && memEQs(HEK_KEY(stashek), HEK_LEN(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,
/* Implement tryAMAGICun_MG macro.
Do get magic, then see if the stack arg is overloaded and if so call it.
Flags:
- AMGf_set return the arg using SETs rather than assigning to
- the targ
AMGf_numeric apply sv_2num to the stack arg.
*/
AMGf_noright | AMGf_unary
| (flags & AMGf_numarg))))
{
- if (flags & AMGf_set) {
- SETs(tmpsv);
- }
- else {
- dTARGET;
- if (SvPADMY(TARG)) {
- sv_setsv(TARG, tmpsv);
- SETTARG;
- }
- else
- SETs(tmpsv);
- }
+ /* where the op is of the form:
+ * $lex = $x op $y (where the assign is optimised away)
+ * then assign the returned value to targ and return that;
+ * otherwise return the value directly
+ */
+ if ( (PL_opargs[PL_op->op_type] & OA_TARGLEX)
+ && (PL_op->op_private & OPpTARGET_MY))
+ {
+ dTARGET;
+ sv_setsv(TARG, tmpsv);
+ SETTARG;
+ }
+ else
+ SETs(tmpsv);
+
PUTBACK;
return TRUE;
}
Do get magic, then see if the two stack args are overloaded and if so
call it.
Flags:
- AMGf_set return the arg using SETs rather than assigning to
- the targ
AMGf_assign op may be called as mutator (eg +=)
AMGf_numeric apply sv_2num to the stack arg.
*/
SvGETMAGIC(right);
if (SvAMAGIC(left) || SvAMAGIC(right)) {
- SV * const tmpsv = amagic_call(left, right, method,
- ((flags & AMGf_assign) && opASSIGN ? AMGf_assign: 0)
+ SV * tmpsv;
+ /* STACKED implies mutator variant, e.g. $x += 1 */
+ bool mutator = (flags & AMGf_assign) && (PL_op->op_flags & OPf_STACKED);
+
+ tmpsv = amagic_call(left, right, method,
+ (mutator ? AMGf_assign: 0)
| (flags & AMGf_numarg));
if (tmpsv) {
- if (flags & AMGf_set) {
- (void)POPs;
- SETs(tmpsv);
- }
- else {
- dATARGET;
- (void)POPs;
- if (opASSIGN || SvPADMY(TARG)) {
- sv_setsv(TARG, tmpsv);
- SETTARG;
- }
- else
- SETs(tmpsv);
- }
+ (void)POPs;
+ /* where the op is one of the two forms:
+ * $x op= $y
+ * $lex = $x op $y (where the assign is optimised away)
+ * then assign the returned value to targ and return that;
+ * otherwise return the value directly
+ */
+ if ( mutator
+ || ( (PL_opargs[PL_op->op_type] & OA_TARGLEX)
+ && (PL_op->op_private & OPpTARGET_MY)))
+ {
+ dTARG;
+ TARG = mutator ? *SP : PAD_SV(PL_op->op_targ);
+ sv_setsv(TARG, tmpsv);
+ SETTARG;
+ }
+ else
+ SETs(tmpsv);
+
PUTBACK;
return TRUE;
}
}
+
if(left==right && SvGMAGICAL(left)) {
SV * const left = sv_newmortal();
*(sp-1) = left;
SV*
Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags)
{
- dVAR;
MAGIC *mg;
CV *cv=NULL;
CV **cvp=NULL, **ocvp=NULL;
case abs_amg:
if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg])
&& ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) {
- SV* const nullsv=sv_2mortal(newSViv(0));
+ SV* const nullsv=&PL_sv_zero;
if (off1==lt_amg) {
SV* const lessp = amagic_call(left,nullsv,
lt_amg,AMGf_noright);
- logic = SvTRUE(lessp);
+ logic = SvTRUE_NN(lessp);
} else {
SV* const lessp = amagic_call(left,nullsv,
ncmp_amg,AMGf_noright);
case neg_amg:
if ((cv = cvp[off=subtr_amg])) {
right = left;
- left = sv_2mortal(newSViv(0));
+ left = &PL_sv_zero;
lr = 1;
}
break;
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;
}
#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;
- U8 gimme = force_scalar ? G_SCALAR : GIMME_V;
+ /* for multiconcat, we may call overload several times,
+ * with the context of individual concats being scalar,
+ * regardless of the overall context of the multiconcat op
+ */
+ U8 gimme = (force_scalar || PL_op->op_type == OP_MULTICONCAT)
+ ? G_SCALAR : GIMME_V;
CATCH_SET(TRUE);
Zero(&myop, 1, BINOP);
res = &PL_sv_undef;
SP = PL_stack_base + oldmark;
break;
- case G_ARRAY: {
+ case G_ARRAY:
if (flags & AMGf_want_list) {
res = sv_2mortal((SV *)newAV());
av_extend((AV *)res, nret);
break;
}
/* FALLTHROUGH */
- }
default:
res = POPs;
break;
case dec_amg:
SvSetSV(left,res); return left;
case not_amg:
- ans=!SvTRUE(res); break;
+ ans=!SvTRUE_NN(res); break;
default:
ans=0; break;
}
void
Perl_gv_name_set(pTHX_ GV *gv, const char *name, U32 len, U32 flags)
{
- dVAR;
U32 hash;
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));
https://perl5.git.perl.org / perl5.git / blobdiff