/* scope.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
SV**
Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
{
+ dVAR;
PL_stack_sp = sp;
#ifndef STRESS_REALLOC
av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
PERL_SI *
Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
{
+ dVAR;
PERL_SI *si;
- New(56, si, 1, PERL_SI);
+ Newx(si, 1, PERL_SI);
si->si_stack = newAV();
AvREAL_off(si->si_stack);
av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
si->si_cxmax = cxitems - 1;
si->si_cxix = -1;
si->si_type = PERLSI_UNDEF;
- New(56, si->si_cxstack, cxitems, PERL_CONTEXT);
+ Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
/* Without any kind of initialising PUSHSUBST()
* in pp_subst() will read uninitialised heap. */
Poison(si->si_cxstack, cxitems, PERL_CONTEXT);
I32
Perl_cxinc(pTHX)
{
- IV old_max = cxstack_max;
+ dVAR;
+ const IV old_max = cxstack_max;
cxstack_max = GROW(cxstack_max);
Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
/* Without any kind of initialising deep enough recursion
void
Perl_push_scope(pTHX)
{
+ dVAR;
if (PL_scopestack_ix == PL_scopestack_max) {
PL_scopestack_max = GROW(PL_scopestack_max);
Renew(PL_scopestack, PL_scopestack_max, I32);
void
Perl_pop_scope(pTHX)
{
+ dVAR;
const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
LEAVE_SCOPE(oldsave);
}
void
Perl_markstack_grow(pTHX)
{
+ dVAR;
const I32 oldmax = PL_markstack_max - PL_markstack;
const I32 newmax = GROW(oldmax);
void
Perl_savestack_grow(pTHX)
{
+ dVAR;
PL_savestack_max = GROW(PL_savestack_max) + 4;
Renew(PL_savestack, PL_savestack_max, ANY);
}
void
Perl_savestack_grow_cnt(pTHX_ I32 need)
{
+ dVAR;
PL_savestack_max = PL_savestack_ix + need;
Renew(PL_savestack, PL_savestack_max, ANY);
}
void
Perl_tmps_grow(pTHX_ I32 n)
{
+ dVAR;
#ifndef STRESS_REALLOC
if (n < 128)
n = (PL_tmps_max < 512) ? 128 : 512;
void
Perl_free_tmps(pTHX)
{
+ dVAR;
/* XXX should tmps_floor live in cxstack? */
const I32 myfloor = PL_tmps_floor;
while (PL_tmps_ix > myfloor) { /* clean up after last statement */
- SV* sv = PL_tmps_stack[PL_tmps_ix];
+ SV* const sv = PL_tmps_stack[PL_tmps_ix];
PL_tmps_stack[PL_tmps_ix--] = Nullsv;
if (sv && sv != &PL_sv_undef) {
SvTEMP_off(sv);
STATIC SV *
S_save_scalar_at(pTHX_ SV **sptr)
{
- register SV *sv;
- SV *osv = *sptr;
+ dVAR;
+ SV * const osv = *sptr;
+ register SV * const sv = *sptr = newSV(0);
- sv = *sptr = NEWSV(0,0);
if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
- MAGIC *mg;
- sv_upgrade(sv, SvTYPE(osv));
if (SvGMAGICAL(osv)) {
const bool oldtainted = PL_tainted;
- mg_get(osv); /* note, can croak! */
- if (PL_tainting && PL_tainted &&
- (mg = mg_find(osv, PERL_MAGIC_taint))) {
- SAVESPTR(mg->mg_obj);
- mg->mg_obj = osv;
- }
SvFLAGS(osv) |= (SvFLAGS(osv) &
(SVp_NOK|SVp_POK)) >> PRIVSHIFT;
PL_tainted = oldtainted;
}
- SvMAGIC(sv) = SvMAGIC(osv);
- /* if it's a special scalar or if it has no 'set' magic,
- * propagate the SvREADONLY flag. --rgs 20030922 */
- for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- if (mg->mg_type == '\0'
- || !(mg->mg_virtual && mg->mg_virtual->svt_set))
- {
- SvFLAGS(sv) |= SvREADONLY(osv);
- break;
- }
- }
- SvFLAGS(sv) |= SvMAGICAL(osv);
- /* XXX SvMAGIC() is *shared* between osv and sv. This can
- * lead to coredumps when both SVs are destroyed without one
- * of their SvMAGIC() slots being NULLed. */
- PL_localizing = 1;
- SvSETMAGIC(sv);
- PL_localizing = 0;
+ mg_localize(osv, sv);
}
return sv;
}
SV *
Perl_save_scalar(pTHX_ GV *gv)
{
- SV **sptr = &GvSV(gv);
+ dVAR;
+ SV ** const sptr = &GvSV(gv);
+ PL_localizing = 1;
+ SvGETMAGIC(*sptr);
+ PL_localizing = 0;
SSCHECK(3);
SSPUSHPTR(SvREFCNT_inc(gv));
SSPUSHPTR(SvREFCNT_inc(*sptr));
SV*
Perl_save_svref(pTHX_ SV **sptr)
{
+ dVAR;
+ SvGETMAGIC(*sptr);
SSCHECK(3);
SSPUSHPTR(sptr);
SSPUSHPTR(SvREFCNT_inc(*sptr));
void
Perl_save_generic_svref(pTHX_ SV **sptr)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(sptr);
SSPUSHPTR(SvREFCNT_inc(*sptr));
void
Perl_save_generic_pvref(pTHX_ char **str)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(str);
SSPUSHPTR(*str);
void
Perl_save_shared_pvref(pTHX_ char **str)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(str);
SSPUSHPTR(*str);
void
Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
{
+ dVAR;
SSCHECK(4);
SSPUSHPTR(sv);
SSPUSHINT(mask);
void
Perl_save_gp(pTHX_ GV *gv, I32 empty)
{
+ dVAR;
SSGROW(6);
SSPUSHIV((IV)SvLEN(gv));
- SvLEN(gv) = 0; /* forget that anything was allocated here */
+ SvLEN_set(gv, 0); /* forget that anything was allocated here */
SSPUSHIV((IV)SvCUR(gv));
- SSPUSHPTR(SvPVX(gv));
+ SSPUSHPTR(SvPVX_const(gv));
SvPOK_off(gv);
SSPUSHPTR(SvREFCNT_inc(gv));
SSPUSHPTR(GvGP(gv));
if (empty) {
register GP *gp;
- Newz(602, gp, 1, GP);
+ Newxz(gp, 1, GP);
if (GvCVu(gv))
PL_sub_generation++; /* taking a method out of circulation */
IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
}
GvGP(gv) = gp_ref(gp);
- GvSV(gv) = NEWSV(72,0);
+ GvSV(gv) = newSV(0);
GvLINE(gv) = CopLINE(PL_curcop);
- GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
+ /* XXX Ideally this cast would be replaced with a change to const char*
+ in the struct. */
+ GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : (char *) "";
GvEGV(gv) = gv;
}
else {
AV *
Perl_save_ary(pTHX_ GV *gv)
{
- AV *oav = GvAVn(gv);
+ dVAR;
+ AV * const oav = GvAVn(gv);
AV *av;
if (!AvREAL(oav) && AvREIFY(oav))
GvAV(gv) = Null(AV*);
av = GvAVn(gv);
- if (SvMAGIC(oav)) {
- SvMAGIC(av) = SvMAGIC(oav);
- SvFLAGS((SV*)av) |= SvMAGICAL(oav);
- SvMAGICAL_off(oav);
- SvMAGIC(oav) = 0;
- PL_localizing = 1;
- SvSETMAGIC((SV*)av);
- PL_localizing = 0;
- }
+ if (SvMAGIC(oav))
+ mg_localize((SV*)oav, (SV*)av);
return av;
}
HV *
Perl_save_hash(pTHX_ GV *gv)
{
+ dVAR;
HV *ohv, *hv;
SSCHECK(3);
GvHV(gv) = Null(HV*);
hv = GvHVn(gv);
- if (SvMAGIC(ohv)) {
- SvMAGIC(hv) = SvMAGIC(ohv);
- SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
- SvMAGICAL_off(ohv);
- SvMAGIC(ohv) = 0;
- PL_localizing = 1;
- SvSETMAGIC((SV*)hv);
- PL_localizing = 0;
- }
+ if (SvMAGIC(ohv))
+ mg_localize((SV*)ohv, (SV*)hv);
return hv;
}
void
Perl_save_item(pTHX_ register SV *item)
{
- register SV *sv = newSVsv(item);
+ dVAR;
+ register SV * const sv = newSVsv(item);
SSCHECK(3);
SSPUSHPTR(item); /* remember the pointer */
void
Perl_save_int(pTHX_ int *intp)
{
+ dVAR;
SSCHECK(3);
SSPUSHINT(*intp);
SSPUSHPTR(intp);
void
Perl_save_long(pTHX_ long int *longp)
{
+ dVAR;
SSCHECK(3);
SSPUSHLONG(*longp);
SSPUSHPTR(longp);
void
Perl_save_bool(pTHX_ bool *boolp)
{
+ dVAR;
SSCHECK(3);
SSPUSHBOOL(*boolp);
SSPUSHPTR(boolp);
void
Perl_save_I32(pTHX_ I32 *intp)
{
+ dVAR;
SSCHECK(3);
SSPUSHINT(*intp);
SSPUSHPTR(intp);
void
Perl_save_I16(pTHX_ I16 *intp)
{
+ dVAR;
SSCHECK(3);
SSPUSHINT(*intp);
SSPUSHPTR(intp);
void
Perl_save_I8(pTHX_ I8 *bytep)
{
+ dVAR;
SSCHECK(3);
SSPUSHINT(*bytep);
SSPUSHPTR(bytep);
void
Perl_save_iv(pTHX_ IV *ivp)
{
+ dVAR;
SSCHECK(3);
SSPUSHIV(*ivp);
SSPUSHPTR(ivp);
void
Perl_save_pptr(pTHX_ char **pptr)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(*pptr);
SSPUSHPTR(pptr);
void
Perl_save_vptr(pTHX_ void *ptr)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(*(char**)ptr);
SSPUSHPTR(ptr);
void
Perl_save_sptr(pTHX_ SV **sptr)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(*sptr);
SSPUSHPTR(sptr);
void
Perl_save_padsv(pTHX_ PADOFFSET off)
{
+ dVAR;
SSCHECK(4);
ASSERT_CURPAD_ACTIVE("save_padsv");
SSPUSHPTR(PL_curpad[off]);
SV **
Perl_save_threadsv(pTHX_ PADOFFSET i)
{
+ dVAR;
Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
- (void)i;
-#ifndef HASATTRIBUTE
- /* No __attribute__, so the compiler doesn't know that croak never returns
- */
- return 0;
-#endif
+ PERL_UNUSED_ARG(i);
+ NORETURN_FUNCTION_END;
}
void
Perl_save_nogv(pTHX_ GV *gv)
{
+ dVAR;
SSCHECK(2);
SSPUSHPTR(gv);
SSPUSHINT(SAVEt_NSTAB);
void
Perl_save_hptr(pTHX_ HV **hptr)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(*hptr);
SSPUSHPTR(hptr);
void
Perl_save_aptr(pTHX_ AV **aptr)
{
+ dVAR;
SSCHECK(3);
SSPUSHPTR(*aptr);
SSPUSHPTR(aptr);
void
Perl_save_freesv(pTHX_ SV *sv)
{
+ dVAR;
SSCHECK(2);
SSPUSHPTR(sv);
SSPUSHINT(SAVEt_FREESV);
void
Perl_save_mortalizesv(pTHX_ SV *sv)
{
+ dVAR;
SSCHECK(2);
SSPUSHPTR(sv);
SSPUSHINT(SAVEt_MORTALIZESV);
void
Perl_save_freeop(pTHX_ OP *o)
{
+ dVAR;
SSCHECK(2);
SSPUSHPTR(o);
SSPUSHINT(SAVEt_FREEOP);
void
Perl_save_freepv(pTHX_ char *pv)
{
+ dVAR;
SSCHECK(2);
SSPUSHPTR(pv);
SSPUSHINT(SAVEt_FREEPV);
void
Perl_save_clearsv(pTHX_ SV **svp)
{
+ dVAR;
ASSERT_CURPAD_ACTIVE("save_clearsv");
SSCHECK(2);
SSPUSHLONG((long)(svp-PL_curpad));
void
Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
{
+ dVAR;
SSCHECK(4);
SSPUSHINT(klen);
SSPUSHPTR(key);
void
Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
{
- register SV *sv;
+ dVAR;
register I32 i;
for (i = 1; i <= maxsarg; i++) {
- sv = NEWSV(0,0);
+ register SV * const sv = newSV(0);
sv_setsv(sv,sarg[i]);
SSCHECK(3);
SSPUSHPTR(sarg[i]); /* remember the pointer */
void
Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
{
+ dVAR;
SSCHECK(3);
SSPUSHDPTR(f);
SSPUSHPTR(p);
void
Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
{
+ dVAR;
SSCHECK(3);
SSPUSHDXPTR(f);
SSPUSHPTR(p);
void
Perl_save_aelem(pTHX_ const AV *av, I32 idx, SV **sptr)
{
+ dVAR;
SV *sv;
+ SvGETMAGIC(*sptr);
SSCHECK(4);
SSPUSHPTR(SvREFCNT_inc(av));
SSPUSHINT(idx);
void
Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
{
+ dVAR;
SV *sv;
+ SvGETMAGIC(*sptr);
SSCHECK(4);
SSPUSHPTR(SvREFCNT_inc(hv));
SSPUSHPTR(SvREFCNT_inc(key));
void
Perl_save_op(pTHX)
{
+ dVAR;
SSCHECK(2);
SSPUSHPTR(PL_op);
SSPUSHINT(SAVEt_OP);
I32
Perl_save_alloc(pTHX_ I32 size, I32 pad)
{
+ dVAR;
register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
- (char*)PL_savestack);
register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
void
Perl_leave_scope(pTHX_ I32 base)
{
+ dVAR;
register SV *sv;
register SV *value;
register GV *gv;
register AV *av;
register HV *hv;
- register void* ptr;
+ void* ptr;
register char* str;
I32 i;
case SAVEt_SVREF: /* scalar reference */
value = (SV*)SSPOPPTR;
ptr = SSPOPPTR;
- av = Nullav; /* what to refcnt_dec */
+ av = NULL; /* what to refcnt_dec */
restore_sv:
sv = *(SV**)ptr;
DEBUG_S(PerlIO_printf(Perl_debug_log,
"restore svref: %p %p:%s -> %p:%s\n",
ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
- if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
- SvTYPE(sv) != SVt_PVGV)
- {
- (void)SvUPGRADE(value, SvTYPE(sv));
- SvMAGIC(value) = SvMAGIC(sv);
- SvFLAGS(value) |= SvMAGICAL(sv);
- SvMAGICAL_off(sv);
- SvMAGIC(sv) = 0;
- }
- /* XXX This branch is pretty bogus. This code irretrievably
- * clears(!) the magic on the SV (either to avoid further
- * croaking that might ensue when the SvSETMAGIC() below is
- * called, or to avoid two different SVs pointing at the same
- * SvMAGIC()). This needs a total rethink. --GSAR */
- else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
- SvTYPE(value) != SVt_PVGV)
- {
- SvFLAGS(value) |= (SvFLAGS(value) &
- (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
- SvMAGICAL_off(value);
- /* XXX this is a leak when we get here because the
- * mg_get() in save_scalar_at() croaked */
- SvMAGIC(value) = 0;
- }
*(SV**)ptr = value;
SvREFCNT_dec(sv);
PL_localizing = 2;
gv = (GV*)SSPOPPTR;
if (GvAV(gv)) {
AV * const goner = GvAV(gv);
- SvMAGIC(av) = SvMAGIC(goner);
+ /* FIXME - this is a temporary hack until we work out what
+ the correct behaviour for magic should be. */
+ sv_unmagic((SV*)goner, PERL_MAGIC_arylen_p);
+ SvMAGIC_set(av, SvMAGIC(goner));
SvFLAGS((SV*)av) |= SvMAGICAL(goner);
SvMAGICAL_off(goner);
- SvMAGIC(goner) = 0;
+ SvMAGIC_set(goner, NULL);
SvREFCNT_dec(goner);
}
GvAV(gv) = av;
gv = (GV*)SSPOPPTR;
if (GvHV(gv)) {
HV * const goner = GvHV(gv);
- SvMAGIC(hv) = SvMAGIC(goner);
+ SvMAGIC_set(hv, SvMAGIC(goner));
SvFLAGS(hv) |= SvMAGICAL(goner);
SvMAGICAL_off(goner);
- SvMAGIC(goner) = 0;
+ SvMAGIC_set(goner, NULL);
SvREFCNT_dec(goner);
}
GvHV(gv) = hv;
case SAVEt_GP: /* scalar reference */
ptr = SSPOPPTR;
gv = (GV*)SSPOPPTR;
- if (SvPVX(gv) && SvLEN(gv) > 0) {
- Safefree(SvPVX(gv));
+ if (SvPVX_const(gv) && SvLEN(gv) > 0) {
+ Safefree(SvPVX_mutable(gv));
}
- SvPVX(gv) = (char *)SSPOPPTR;
- SvCUR(gv) = (STRLEN)SSPOPIV;
- SvLEN(gv) = (STRLEN)SSPOPIV;
+ SvPV_set(gv, (char *)SSPOPPTR);
+ SvCUR_set(gv, (STRLEN)SSPOPIV);
+ SvLEN_set(gv, (STRLEN)SSPOPIV);
gp_free(gv);
GvGP(gv) = (GP*)ptr;
if (GvCVu(gv))
break;
case SAVEt_FREEPV:
ptr = SSPOPPTR;
- Safefree((char*)ptr);
+ Safefree(ptr);
break;
case SAVEt_CLEARSV:
ptr = (void*)&PL_curpad[SSPOPLONG];
switch (SvTYPE(sv)) { /* Console ourselves with a new value */
case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
- default: *(SV**)ptr = NEWSV(0,0); break;
+ default: *(SV**)ptr = newSV(0); break;
}
SvREFCNT_dec(sv); /* Cast current value to the winds. */
/* preserve pad nature, but also mark as not live
case SAVEt_SAVESWITCHSTACK:
{
dSP;
- AV* t = (AV*)SSPOPPTR;
- AV* f = (AV*)SSPOPPTR;
+ AV* const t = (AV*)SSPOPPTR;
+ AV* const f = (AV*)SSPOPPTR;
SWITCHSTACK(t,f);
PL_curstackinfo->si_stack = f;
}
void
Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
{
+ dVAR;
#ifdef DEBUGGING
PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
if (CxTYPE(cx) != CXt_SUBST) {
PL_op_desc[cx->blk_eval.old_op_type]);
if (cx->blk_eval.old_namesv)
PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
- SvPVX(cx->blk_eval.old_namesv));
+ SvPVX_const(cx->blk_eval.old_namesv));
PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
PTR2UV(cx->blk_eval.old_eval_root));
PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
PTR2UV(cx->sb_rxres));
break;
}
+#else
+ PERL_UNUSED_ARG(cx);
#endif /* DEBUGGING */
}
* indent-tabs-mode: t
* End:
*
- * vim: shiftwidth=4:
-*/
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
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