if (!*where)
*where = newSV_type(type);
+ if (type == SVt_PVAV && GvNAMELEN(gv) == 3
+ && strnEQ(GvNAME(gv), "ISA", 3))
+ sv_magic(*where, (SV *)gv, PERL_MAGIC_isa, NULL, 0);
return gv;
}
{
GP *gp;
U32 hash;
-#ifdef USE_ITHREADS
- const char *const file
- = (PL_curcop && CopFILE(PL_curcop)) ? CopFILE(PL_curcop) : "";
- const STRLEN len = strlen(file);
-#else
- SV *const temp_sv = CopFILESV(PL_curcop);
const char *file;
STRLEN len;
+#ifndef USE_ITHREADS
+ SV * temp_sv;
+#endif
+ dVAR;
PERL_ARGS_ASSERT_NEWGP;
+ Newxz(gp, 1, GP);
+ gp->gp_egv = gv; /* allow compiler to reuse gv after this */
+#ifndef PERL_DONT_CREATE_GVSV
+ gp->gp_sv = newSV(0);
+#endif
+#ifdef USE_ITHREADS
+ if (PL_curcop) {
+ gp->gp_line = CopLINE(PL_curcop); /* 0 otherwise Newxz */
+ if (CopFILE(PL_curcop)) {
+ file = CopFILE(PL_curcop);
+ len = strlen(file);
+ }
+ else goto no_file;
+ }
+ else {
+ no_file:
+ file = "";
+ len = 0;
+ }
+#else
+ if(PL_curcop)
+ gp->gp_line = CopLINE(PL_curcop); /* 0 otherwise Newxz */
+ temp_sv = CopFILESV(PL_curcop);
if (temp_sv) {
file = SvPVX(temp_sv);
len = SvCUR(temp_sv);
#endif
PERL_HASH(hash, file, len);
-
- Newxz(gp, 1, GP);
-
-#ifndef PERL_DONT_CREATE_GVSV
- gp->gp_sv = newSV(0);
-#endif
-
- gp->gp_line = PL_curcop ? CopLINE(PL_curcop) : 0;
- /* XXX Ideally this cast would be replaced with a change to const char*
- in the struct. */
gp->gp_file_hek = share_hek(file, len, hash);
- gp->gp_egv = gv;
gp->gp_refcnt = 1;
return gp;
Perl_cvgv_set(pTHX_ CV* cv, GV* gv)
{
GV * const oldgv = CvGV(cv);
+ HEK *hek;
PERL_ARGS_ASSERT_CVGV_SET;
if (oldgv == gv)
if (oldgv) {
if (CvCVGV_RC(cv)) {
- SvREFCNT_dec(oldgv);
+ SvREFCNT_dec_NN(oldgv);
CvCVGV_RC_off(cv);
}
else {
sv_del_backref(MUTABLE_SV(oldgv), MUTABLE_SV(cv));
}
}
+ else if ((hek = CvNAME_HEK(cv))) unshare_hek(hek);
- SvANY(cv)->xcv_gv = gv;
+ SvANY(cv)->xcv_gv_u.xcv_gv = gv;
assert(!CvCVGV_RC(cv));
if (!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 (doproto) { /* Replicate part of newSUB here. */
+ if (doproto) {
CV *cv;
- ENTER;
if (has_constant) {
/* newCONSTSUB takes ownership of the reference from us. */
cv = newCONSTSUB_flags(stash, name, len, flags, has_constant);
from a reference to CV. */
if (exported_constant)
GvIMPORTED_CV_on(gv);
+ CvSTASH_set(cv, PL_curstash); /* XXX Why is this needed? */
} else {
- (void) start_subparse(0,0); /* Create empty CV in compcv. */
- cv = PL_compcv;
- GvCV_set(gv,cv);
+ cv = newSTUB(gv,1);
}
- LEAVE;
-
- mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar($) { (shift) } sub ASDF::baz($); *ASDF::baz = \&Foo::bar */
- CvGV_set(cv, gv);
- CvFILE_set_from_cop(cv, PL_curcop);
- CvSTASH_set(cv, PL_curstash);
if (proto) {
sv_usepvn_flags(MUTABLE_SV(cv), proto, protolen,
SV_HAS_TRAILING_NUL);
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_prototype: case KEY_q: case KEY_qq: case KEY_qr: case KEY_qw:
+ case KEY_q : case KEY_qq : case KEY_qr : case KEY_qw :
case KEY_qx : case KEY_redo : case KEY_require: case KEY_return:
- case KEY_s : case KEY_say : case KEY_scalar : case KEY_sort :
- case KEY_split: case KEY_state: case KEY_study : case KEY_sub :
- case KEY_tr : case KEY_undef: case KEY_UNITCHECK: case KEY_unless:
+ case KEY_s : case KEY_say : case KEY_sort :
+ case KEY_state: case KEY_sub :
+ case KEY_tr : case KEY_UNITCHECK: case KEY_unless:
case KEY_until: case KEY_use : case KEY_when : case KEY_while :
case KEY_x : case KEY_xor : case KEY_y :
return NULL;
case KEY_pop:
case KEY_push:
case KEY_shift:
- case KEY_splice:
+ case KEY_splice: case KEY_split:
case KEY_stat:
case KEY_system:
case KEY_truncate: case KEY_unlink:
1
);
assert(GvCV(gv) == cv);
- if (opnum != OP_VEC && opnum != OP_SUBSTR && opnum != OP_POS)
+ if (opnum != OP_VEC && opnum != OP_SUBSTR && opnum != OP_POS
+ && opnum != OP_UNDEF)
CvLVALUE_off(cv); /* Now *that* was a neat trick. */
LEAVE;
PL_parser = oldparser;
which in the case of success contains an alias for the subroutine, and sets
up caching info for this glob.
-Currently, the only significant value for C<flags> is SVf_UTF8.
+The only significant values for C<flags> are GV_SUPER and SVf_UTF8.
-This function grants C<"SUPER"> token as a postfix of the stash name. The
+GV_SUPER indicates that we want to look up the method in the superclasses
+of the C<stash>.
+
+The
GV returned from C<gv_fetchmeth> may be a method cache entry, which is not
visible to Perl code. So when calling C<call_sv>, you should not use
the GV directly; instead, you should use the method's CV, which can be
AV* linear_av;
SV** linear_svp;
SV* linear_sv;
- HV* cstash;
+ HV* cstash, *cachestash;
GV* candidate = NULL;
CV* cand_cv = NULL;
GV* topgv = NULL;
const char *hvname;
I32 create = (level >= 0) ? 1 : 0;
I32 items;
- STRLEN packlen;
U32 topgen_cmp;
U32 is_utf8 = flags & SVf_UTF8;
assert(hvname);
assert(name);
- DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,hvname) );
+ DEBUG_o( Perl_deb(aTHX_ "Looking for %smethod %s in package %s\n",
+ flags & GV_SUPER ? "SUPER " : "",name,hvname) );
topgen_cmp = HvMROMETA(stash)->cache_gen + PL_sub_generation;
+ if (flags & GV_SUPER) {
+ if (!HvAUX(stash)->xhv_super) HvAUX(stash)->xhv_super = newHV();
+ cachestash = HvAUX(stash)->xhv_super;
+ }
+ else cachestash = stash;
+
/* check locally for a real method or a cache entry */
- gvp = (GV**)hv_fetch(stash, name, is_utf8 ? -(I32)len : (I32)len, create);
+ gvp = (GV**)hv_fetch(cachestash, name, is_utf8 ? -(I32)len : (I32)len,
+ create);
if(gvp) {
topgv = *gvp;
have_gv:
}
else {
/* stale cache entry, junk it and move on */
- SvREFCNT_dec(cand_cv);
+ SvREFCNT_dec_NN(cand_cv);
GvCV_set(topgv, NULL);
cand_cv = NULL;
GvCVGEN(topgv) = 0;
/* cache indicates no such method definitively */
return 0;
}
- else if (len > 1 /* shortest is uc */ && HvNAMELEN_get(stash) == 4
+ else if (stash == cachestash
+ && len > 1 /* shortest is uc */ && HvNAMELEN_get(stash) == 4
&& strnEQ(hvname, "CORE", 4)
&& S_maybe_add_coresub(aTHX_ NULL,topgv,name,len))
goto have_gv;
}
- packlen = HvNAMELEN_get(stash);
- if (packlen >= 7 && strEQ(hvname + packlen - 7, "::SUPER")) {
- HV* basestash;
- packlen -= 7;
- basestash = gv_stashpvn(hvname, packlen,
- GV_ADD | (HvNAMEUTF8(stash) ? SVf_UTF8 : 0));
- linear_av = mro_get_linear_isa(basestash);
- }
- else {
- linear_av = mro_get_linear_isa(stash); /* has ourselves at the top of the list */
- }
-
+ linear_av = mro_get_linear_isa(stash); /* has ourselves at the top of the list */
linear_svp = AvARRAY(linear_av) + 1; /* skip over self */
items = AvFILLp(linear_av); /* no +1, to skip over self */
while (items--) {
/* Check UNIVERSAL without caching */
if(level == 0 || level == -1) {
- candidate = gv_fetchmeth_pvn(NULL, name, len, 1, flags);
+ candidate = gv_fetchmeth_pvn(NULL, name, len, 1, flags &~GV_SUPER);
if(candidate) {
cand_cv = GvCV(candidate);
if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) {
=cut
*/
-STATIC HV*
-S_gv_get_super_pkg(pTHX_ const char* name, I32 namelen, U32 flags)
-{
- AV* superisa;
- GV** gvp;
- GV* gv;
- HV* stash;
-
- PERL_ARGS_ASSERT_GV_GET_SUPER_PKG;
-
- stash = gv_stashpvn(name, namelen, flags);
- if(stash) return stash;
-
- /* If we must create it, give it an @ISA array containing
- the real package this SUPER is for, so that it's tied
- into the cache invalidation code correctly */
- stash = gv_stashpvn(name, namelen, GV_ADD | flags);
- gvp = (GV**)hv_fetchs(stash, "ISA", TRUE);
- gv = *gvp;
- gv_init(gv, stash, "ISA", 3, TRUE);
- superisa = GvAVn(gv);
- GvMULTI_on(gv);
- sv_magic(MUTABLE_SV(superisa), MUTABLE_SV(gv), PERL_MAGIC_isa, NULL, 0);
-#ifdef USE_ITHREADS
- av_push(superisa, newSVpvn_flags(CopSTASHPV(PL_curcop),
- CopSTASH_len(PL_curcop) < 0
- ? -CopSTASH_len(PL_curcop)
- : CopSTASH_len(PL_curcop),
- SVf_UTF8*(CopSTASH_len(PL_curcop) < 0)
- ));
-#else
- av_push(superisa, newSVhek(CopSTASH(PL_curcop)
- ? HvNAME_HEK(CopSTASH(PL_curcop)) : NULL));
-#endif
-
- return stash;
-}
-
GV *
Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload)
{
Perl_gv_fetchmethod_pvn_flags(pTHX_ HV *stash, const char *name, const STRLEN len, U32 flags)
{
dVAR;
- register const char *nend;
+ const char *nend;
const char *nsplit = NULL;
GV* gv;
HV* ostash = stash;
if (nsplit) {
if ((nsplit - origname) == 5 && memEQ(origname, "SUPER", 5)) {
/* ->SUPER::method should really be looked up in original stash */
- SV * const tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_
- "%"HEKf"::SUPER",
- HEKfARG(HvNAME_HEK((HV*)CopSTASH(PL_curcop)))
- ));
- /* __PACKAGE__::SUPER stash should be autovivified */
- stash = gv_get_super_pkg(SvPVX_const(tmpstr), SvCUR(tmpstr), SvUTF8(tmpstr));
+ stash = CopSTASH(PL_curcop);
+ flags |= GV_SUPER;
DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n",
- origname, HvNAME_get(stash), name) );
+ origname, HvENAME_get(stash), name) );
+ }
+ else if ((nsplit - origname) >= 7 &&
+ strnEQ(nsplit - 7, "::SUPER", 7)) {
+ /* don't autovifify if ->NoSuchStash::SUPER::method */
+ stash = gv_stashpvn(origname, nsplit - origname - 7, is_utf8);
+ if (stash) flags |= GV_SUPER;
}
else {
/* don't autovifify if ->NoSuchStash::method */
stash = gv_stashpvn(origname, nsplit - origname, is_utf8);
-
- /* however, explicit calls to Pkg::SUPER::method may
- happen, and may require autovivification to work */
- if (!stash && (nsplit - origname) >= 7 &&
- strnEQ(nsplit - 7, "::SUPER", 7) &&
- gv_stashpvn(origname, nsplit - origname - 7, is_utf8))
- stash = gv_get_super_pkg(origname, nsplit - origname, flags);
}
ostash = stash;
}
}
else
packname = sv_2mortal(newSVhek(HvNAME_HEK(stash)));
+ if (flags & GV_SUPER) sv_catpvs(packname, "::SUPER");
}
if (!(gv = gv_fetchmeth_pvn(stash, S_autoload, S_autolen, FALSE, is_utf8)))
return NULL;
*/
CvSTASH_set(cv, stash);
if (SvPOK(cv)) { /* Ouch! */
- SV *tmpsv = newSVpvn_flags(name, len, is_utf8);
+ SV * const tmpsv = newSVpvn_flags(name, len, is_utf8);
STRLEN ulen;
const char *proto = CvPROTO(cv);
assert(proto);
SvTEMP_on(tmpsv); /* Allow theft */
sv_setsv_nomg((SV *)cv, tmpsv);
SvTEMP_off(tmpsv);
- SvREFCNT_dec(tmpsv);
+ SvREFCNT_dec_NN(tmpsv);
SvLEN(cv) = SvCUR(cv) + 1;
SvCUR(cv) = ulen;
}
}
LEAVE;
varsv = GvSVn(vargv);
+ SvTAINTED_off(varsv); /* previous $AUTOLOAD taint is obsolete */
+ /* XXX: this process is not careful to avoid extra magic gets and sets; tied $AUTOLOAD will get noise */
sv_setsv(varsv, packname);
sv_catpvs(varsv, "::");
/* Ensure SvSETMAGIC() is called if necessary. In particular, to clear
const char type = varname == '[' ? '$' : '%';
dSP;
ENTER;
+ SAVEFREESV(namesv);
if ( flags & 1 )
save_scalar(gv);
PUSHSTACKi(PERLSI_MAGIC);
Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, module, NULL);
POPSTACK;
- LEAVE;
- SPAGAIN;
stash = gv_stashsv(namesv, 0);
if (!stash)
Perl_croak(aTHX_ "panic: Can't use %c%c because %"SVf" is not available",
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;
}
- SvREFCNT_dec(namesv);
+ else SvREFCNT_dec_NN(namesv);
return stash;
}
C<flags> is 0 (or any other setting that does not create packages) then NULL
is returned.
+Flags may be one of:
+
+ GV_ADD
+ SVf_UTF8
+ GV_NOADD_NOINIT
+ GV_NOINIT
+ GV_NOEXPAND
+ GV_ADDMG
+
+The most important of which are probably GV_ADD and SVf_UTF8.
=cut
*/
const svtype sv_type)
{
dVAR;
- register const char *name = nambeg;
- register GV *gv = NULL;
+ const char *name = nambeg;
+ GV *gv = NULL;
GV**gvp;
I32 len;
- register const char *name_cursor;
+ const char *name_cursor;
HV *stash = NULL;
const I32 no_init = flags & (GV_NOADD_NOINIT | GV_NOINIT);
const I32 no_expand = flags & GV_NOEXPAND;
if (!stash) {
no_stash:
- if (len && isIDFIRST_lazy(name)) {
+ if (len && isIDFIRST_lazy_if(name, is_utf8)) {
bool global = FALSE;
switch (len) {
/* By this point we should have a stash and a name */
if (!stash) {
- if (add) {
+ if (add && !PL_in_clean_all) {
+ SV * const namesv = newSVpvn_flags(name, len, is_utf8);
SV * const err = Perl_mess(aTHX_
"Global symbol \"%s%"SVf"\" requires explicit package name",
(sv_type == SVt_PV ? "$"
: sv_type == SVt_PVAV ? "@"
: sv_type == SVt_PVHV ? "%"
- : ""), SVfARG(newSVpvn_flags(name, len, SVs_TEMP | is_utf8)));
+ : ""), SVfARG(namesv));
GV *gv;
- if (USE_UTF8_IN_NAMES)
+ SvREFCNT_dec_NN(namesv);
+ if (is_utf8)
SvUTF8_on(err);
qerror(err);
gv = gv_fetchpvs("<none>::", GV_ADDMULTI, SVt_PVHV);
if (add) {
GvMULTI_on(gv);
gv_init_svtype(gv, sv_type);
+ /* You reach this path once the typeglob has already been created,
+ either by the same or a different sigil. If this path didn't
+ exist, then (say) referencing $! first, and %! second would
+ mean that %! was not handled correctly. */
if (len == 1 && stash == PL_defstash) {
if (sv_type == SVt_PVHV || sv_type == SVt_PVGV) {
if (*name == '!')
require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1);
else if (*name == '-' || *name == '+')
require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0);
- }
+ } else if (sv_type == SVt_PV && *name == '#') {
+ Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED,
+ WARN_SYNTAX),
+ "$# is no longer supported");
+ }
+ if (*name == '*') {
+ if (sv_type == SVt_PV)
+ Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED,
+ WARN_SYNTAX),
+ "$* is no longer supported, and will become a syntax error");
+ else
+ Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
+ "%c* is deprecated, and will become a syntax error",
+ sv_type == SVt_PVAV ? '@'
+ : sv_type == SVt_PVCV ? '&'
+ : sv_type == SVt_PVHV ? '%'
+ : '*');
+ }
if (sv_type==SVt_PV || sv_type==SVt_PVGV) {
- if (*name == '[')
- require_tie_mod(gv,name,newSVpvs("arybase"),"FETCH",0);
- else if (*name == '&' || *name == '`' || *name == '\'') {
- PL_sawampersand = TRUE;
- (void)GvSVn(gv);
- }
+ switch (*name) {
+ case '[':
+ require_tie_mod(gv,name,newSVpvs("arybase"),"FETCH",0);
+ break;
+#ifdef PERL_SAWAMPERSAND
+ case '`':
+ PL_sawampersand |= SAWAMPERSAND_LEFT;
+ (void)GvSVn(gv);
+ break;
+ case '&':
+ PL_sawampersand |= SAWAMPERSAND_MIDDLE;
+ (void)GvSVn(gv);
+ break;
+ case '\'':
+ PL_sawampersand |= SAWAMPERSAND_RIGHT;
+ (void)GvSVn(gv);
+ break;
+#endif
+ }
}
}
else if (len == 3 && sv_type == SVt_PVAV
if (strEQ(name2, "LOBAL_PHASE"))
goto ro_magicalize;
break;
+ case '\014': /* $^LAST_FH */
+ if (strEQ(name2, "AST_FH"))
+ goto ro_magicalize;
+ break;
case '\015': /* $^MATCH */
if (strEQ(name2, "ATCH"))
goto magicalize;
case '&': /* $& */
case '`': /* $` */
case '\'': /* $' */
+#ifdef PERL_SAWAMPERSAND
if (!(
sv_type == SVt_PVAV ||
sv_type == SVt_PVHV ||
sv_type == SVt_PVCV ||
sv_type == SVt_PVFM ||
sv_type == SVt_PVIO
- )) { PL_sawampersand = TRUE; }
+ )) { PL_sawampersand |=
+ (*name == '`')
+ ? SAWAMPERSAND_LEFT
+ : (*name == '&')
+ ? SAWAMPERSAND_MIDDLE
+ : SAWAMPERSAND_RIGHT;
+ }
+#endif
goto magicalize;
case ':': /* $: */
break;
}
case '*': /* $* */
+ if (sv_type == SVt_PV)
+ Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
+ "$* is no longer supported, and will become a syntax error");
+ else {
+ Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
+ "%c* is deprecated, and will become a syntax error",
+ sv_type == SVt_PVAV ? '@'
+ : sv_type == SVt_PVCV ? '&'
+ : sv_type == SVt_PVHV ? '%'
+ : '*');
+ }
+ break;
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);
+ "$# is no longer supported");
break;
- case '|': /* $| */
- sv_setiv(GvSVn(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0);
- goto magicalize;
-
case '\010': /* $^H */
{
HV *const hv = GvHVn(gv);
case '>': /* $> */
case '\\': /* $\ */
case '/': /* $/ */
+ case '|': /* $| */
case '$': /* $$ */
case '\001': /* $^A */
case '\003': /* $^C */
case '\014': /* $^L */
sv_setpvs(GvSVn(gv),"\f");
- PL_formfeed = GvSVn(gv);
break;
case ';': /* $; */
sv_setpvs(GvSVn(gv),"\034");
GvSV(gv) && (SvOK(GvSV(gv)) || SvMAGICAL(GvSV(gv)))
))
(void)hv_store(stash,name,len,(SV *)gv,0);
- else SvREFCNT_dec(gv), gv = NULL;
+ else SvREFCNT_dec_NN(gv), gv = NULL;
}
if (gv) gv_init_svtype(gv, faking_it ? SVt_PVCV : sv_type);
return gv;
Perl_gv_check(pTHX_ const HV *stash)
{
dVAR;
- register I32 i;
+ I32 i;
PERL_ARGS_ASSERT_GV_CHECK;
for (i = 0; i <= (I32) HvMAX(stash); i++) {
const HE *entry;
for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
- register GV *gv;
+ GV *gv;
HV *hv;
if (HeKEY(entry)[HeKLEN(entry)-1] == ':' &&
(gv = MUTABLE_GV(HeVAL(entry))) && isGV(gv) && (hv = GvHV(gv)))
/* If the GP they asked for a reference to contains
a method cache entry, clear it first, so that we
don't infect them with our cached entry */
- SvREFCNT_dec(gp->gp_cv);
+ SvREFCNT_dec_NN(gp->gp_cv);
gp->gp_cv = NULL;
gp->gp_cvgen = 0;
}
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)
(void)hv_delete(PL_stashcache, HEK_KEY(hvname_hek),
(HEK_UTF8(hvname_hek) ? -HEK_LEN(hvname_hek) : HEK_LEN(hvname_hek)),
for (i = 1; i < NofAMmeth; i++) {
CV * const cv = amtp->table[i];
if (cv) {
- SvREFCNT_dec(MUTABLE_SV(cv));
+ SvREFCNT_dec_NN(MUTABLE_SV(cv));
amtp->table[i] = NULL;
}
}
if (mg) {
const AMT * const amtp = (AMT*)mg->mg_ptr;
if (amtp->was_ok_sub == newgen) {
- return AMT_OVERLOADED(amtp) ? 1 : 0;
+ return AMT_AMAGIC(amtp) ? 1 : 0;
}
sv_unmagic(MUTABLE_SV(stash), PERL_MAGIC_overload_table);
}
amt.flags = 0;
{
- int filled = 0, have_ovl = 0;
- int i, lim = 1;
+ int filled = 0;
+ int i;
/* Work with "fallback" key, which we assume to be first in PL_AMG_names */
if (!gv)
{
if (!gv_fetchmeth_pvn(stash, "((", 2, -1, 0))
- lim = DESTROY_amg; /* Skip overloading entries. */
+ goto no_table;
}
#ifdef PERL_DONT_CREATE_GVSV
else if (!sv) {
}
#endif
else if (SvTRUE(sv))
+ /* don't need to set overloading here because fallback => 1
+ * is the default setting for classes without overloading */
amt.fallback=AMGfallYES;
- else if (SvOK(sv))
+ else if (SvOK(sv)) {
amt.fallback=AMGfallNEVER;
+ filled = 1;
+ }
+ else {
+ filled = 1;
+ }
- for (i = 1; i < lim; i++)
- amt.table[i] = NULL;
- for (; i < NofAMmeth; i++) {
+ for (i = 1; i < NofAMmeth; i++) {
const char * const cooky = PL_AMG_names[i];
/* Human-readable form, for debugging: */
- const char * const cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i));
+ const char * const cp = AMG_id2name(i);
const STRLEN l = PL_AMG_namelens[i];
DEBUG_o( Perl_deb(aTHX_ "Checking overloading of \"%s\" in package \"%.256s\"\n",
then we could have created stubs for "(+0" in A and C too.
But if B overloads "bool", we may want to use it for
numifying instead of C's "+0". */
- if (i >= DESTROY_amg)
- gv = Perl_gv_fetchmeth_pvn_autoload(aTHX_ stash, cooky, l, 0, 0);
- else /* Autoload taken care of below */
- gv = Perl_gv_fetchmeth_pvn(aTHX_ stash, cooky, l, -1, 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")){
cp, HvNAME_get(stash), HvNAME_get(GvSTASH(CvGV(cv))),
GvNAME(CvGV(cv))) );
filled = 1;
- if (i < DESTROY_amg)
- have_ovl = 1;
} else if (gv) { /* Autoloaded... */
cv = MUTABLE_CV(gv);
filled = 1;
}
if (filled) {
AMT_AMAGIC_on(&amt);
- if (have_ovl)
- AMT_OVERLOADED_on(&amt);
sv_magic(MUTABLE_SV(stash), 0, PERL_MAGIC_overload_table,
(char*)&amt, sizeof(AMT));
- return have_ovl;
+ return TRUE;
}
}
/* Here we have no table: */
- /* no_table: */
+ no_table:
AMT_AMAGIC_off(&amt);
sv_magic(MUTABLE_SV(stash), 0, PERL_MAGIC_overload_table,
(char*)&amt, sizeof(AMTS));
mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table);
if (!mg) {
do_update:
- /* If we're looking up a destructor to invoke, we must avoid
- * that Gv_AMupdate croaks, because we might be dying already */
- if (Gv_AMupdate(stash, cBOOL(id == DESTROY_amg)) == -1) {
- /* and if it didn't found a destructor, we fall back
- * to a simpler method that will only look for the
- * destructor instead of the whole magic */
- if (id == DESTROY_amg) {
- GV * const gv = gv_fetchmethod(stash, "DESTROY");
- if (gv)
- return GvCV(gv);
- }
+ if (Gv_AMupdate(stash, 0) == -1)
return NULL;
- }
mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table);
}
assert(mg);
int assign = AMGf_assign & flags;
const int assignshift = assign ? 1 : 0;
int use_default_op = 0;
+ int force_scalar = 0;
#ifdef DEBUGGING
int fl=0;
#endif
&& (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr)
? (amtp = (AMT*)mg->mg_ptr)->table
: NULL))
- && ((cv = cvp[off=method+assignshift])
- || (assign && amtp->fallback > AMGfallNEVER && /* fallback to
- * usual method */
- (
-#ifdef DEBUGGING
- fl = 1,
-#endif
- cv = cvp[off=method])))) { /* Method for right
- * argument found */
- lr=1;
+ && (cv = cvp[off=method])) { /* Method for right
+ * argument found */
+ lr=1;
} else if (((cvp && amtp->fallback > AMGfallNEVER)
|| (ocvp && oamtp->fallback > AMGfallNEVER))
&& !(flags & AMGf_unary)) {
force_cpy = force_cpy || assign;
}
}
+
+ switch (method) {
+ /* in these cases, we're calling '+' or '-' as a fallback for a ++ or --
+ * operation. we need this to return a value, so that it can be assigned
+ * later on, in the postpr block (case inc_amg/dec_amg), even if the
+ * increment or decrement was itself called in void context */
+ case inc_amg:
+ if (off == add_amg)
+ force_scalar = 1;
+ break;
+ case dec_amg:
+ if (off == subtr_amg)
+ force_scalar = 1;
+ break;
+ /* in these cases, we're calling an assignment variant of an operator
+ * (+= rather than +, for instance). regardless of whether it's a
+ * fallback or not, it always has to return a value, which will be
+ * assigned to the proper variable later */
+ case add_amg:
+ case subtr_amg:
+ case mult_amg:
+ case div_amg:
+ case modulo_amg:
+ case pow_amg:
+ case lshift_amg:
+ case rshift_amg:
+ case repeat_amg:
+ case concat_amg:
+ case band_amg:
+ case bor_amg:
+ case bxor_amg:
+ if (assign)
+ force_scalar = 1;
+ break;
+ /* the copy constructor always needs to return a value */
+ case copy_amg:
+ force_scalar = 1;
+ break;
+ /* because of the way these are implemented (they don't perform the
+ * dereferencing themselves, they return a reference that perl then
+ * dereferences later), they always have to be in scalar context */
+ case to_sv_amg:
+ case to_av_amg:
+ case to_hv_amg:
+ case to_gv_amg:
+ case to_cv_amg:
+ force_scalar = 1;
+ break;
+ /* these don't have an op of their own; they're triggered by their parent
+ * op, so the context there isn't meaningful ('$a and foo()' in void
+ * context still needs to pass scalar context on to $a's bool overload) */
+ case bool__amg:
+ case numer_amg:
+ case string_amg:
+ force_scalar = 1;
+ break;
+ }
+
#ifdef DEBUGGING
if (!notfound) {
DEBUG_o(Perl_deb(aTHX_
if (SvREFCNT(tmpRef) > 1 && (rv_copy = AMG_CALLunary(left,copy_amg))) {
SvRV_set(left, rv_copy);
SvSETMAGIC(left);
- SvREFCNT_dec(tmpRef);
+ SvREFCNT_dec_NN(tmpRef);
}
}
BINOP myop;
SV* res;
const bool oldcatch = CATCH_GET;
+ I32 oldmark, nret;
+ int gimme = force_scalar ? G_SCALAR : GIMME_V;
CATCH_SET(TRUE);
Zero(&myop, 1, BINOP);
myop.op_last = (OP *) &myop;
myop.op_next = NULL;
- myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED;
+ myop.op_flags = OPf_STACKED;
+
+ switch (gimme) {
+ case G_VOID:
+ myop.op_flags |= OPf_WANT_VOID;
+ break;
+ case G_ARRAY:
+ if (flags & AMGf_want_list) {
+ myop.op_flags |= OPf_WANT_LIST;
+ break;
+ }
+ /* FALLTHROUGH */
+ default:
+ myop.op_flags |= OPf_WANT_SCALAR;
+ break;
+ }
PUSHSTACKi(PERLSI_OVERLOAD);
ENTER;
}
PUSHs(MUTABLE_SV(cv));
PUTBACK;
+ oldmark = TOPMARK;
if ((PL_op = PL_ppaddr[OP_ENTERSUB](aTHX)))
CALLRUNOPS(aTHX);
LEAVE;
SPAGAIN;
+ nret = SP - (PL_stack_base + oldmark);
+
+ switch (gimme) {
+ case G_VOID:
+ /* returning NULL has another meaning, and we check the context
+ * at the call site too, so this can be differentiated from the
+ * scalar case */
+ res = &PL_sv_undef;
+ SP = PL_stack_base + oldmark;
+ break;
+ case G_ARRAY: {
+ if (flags & AMGf_want_list) {
+ res = sv_2mortal((SV *)newAV());
+ av_extend((AV *)res, nret);
+ while (nret--)
+ av_store((AV *)res, nret, POPs);
+ break;
+ }
+ /* FALLTHROUGH */
+ }
+ default:
+ res = POPs;
+ break;
+ }
- res=POPs;
PUTBACK;
POPSTACK;
CATCH_SET(oldcatch);
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
- * indent-tabs-mode: t
+ * indent-tabs-mode: nil
* End:
*
- * ex: set ts=8 sts=4 sw=4 noet:
+ * ex: set ts=8 sts=4 sw=4 et:
*/
https://perl5.git.perl.org / perl5.git / blobdiff