/* pad.c
*
- * Copyright (C) 2002,2003 by Larry Wall and others
+ * Copyright (C) 2002, 2003, 2004, 2005 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.
/*
=head1 Pad Data Structures
+This file contains the functions that create and manipulate scratchpads,
+which are array-of-array data structures attached to a CV (ie a sub)
+and which store lexical variables and opcode temporary and per-thread
+values.
+
=for apidoc m|AV *|CvPADLIST|CV *cv
CV's can have CvPADLIST(cv) set to point to an AV.
NV+1..IV inclusive is a range of cop_seq numbers for which the name is
valid. For typed lexicals name SV is SVt_PVMG and SvSTASH points at the
type. For C<our> lexicals, the type is SVt_PVGV, and GvSTASH points at the
-stash of the associated global (so that duplicate C<our> delarations in the
+stash of the associated global (so that duplicate C<our> declarations in the
same package can be detected). SvCUR is sometimes hijacked to
store the generation number during compilation.
Note that formats are treated as anon subs, and are cloned each time
write is called (if necessary).
+The flag SVf_PADSTALE is cleared on lexicals each time the my() is executed,
+and set on scope exit. This allows the 'Variable $x is not available' warning
+to be generated in evals, such as
+
+ { my $x = 1; sub f { eval '$x'} } f();
+
=cut
*/
PADLIST *
Perl_pad_new(pTHX_ int flags)
{
- AV *padlist, *padname, *pad, *a0;
+ AV *padlist, *padname, *pad;
ASSERT_CURPAD_LEGAL("pad_new");
* dispensed with eventually ???
*/
- a0 = newAV(); /* will be @_ */
+ AV * const a0 = newAV(); /* will be @_ */
av_extend(a0, 0);
av_store(pad, 0, (SV*)a0);
- AvFLAGS(a0) = AVf_REIFY;
+ AvREIFY_only(a0);
}
else {
av_store(pad, 0, Nullsv);
Perl_pad_undef(pTHX_ CV* cv)
{
I32 ix;
- PADLIST *padlist = CvPADLIST(cv);
+ const PADLIST * const padlist = CvPADLIST(cv);
if (!padlist)
return;
* children, or integrate this loop with general cleanup */
if (!PL_dirty) { /* don't bother during global destruction */
- CV *outercv = CvOUTSIDE(cv);
- U32 seq = CvOUTSIDE_SEQ(cv);
- AV *comppad_name = (AV*)AvARRAY(padlist)[0];
- SV **namepad = AvARRAY(comppad_name);
- AV *comppad = (AV*)AvARRAY(padlist)[1];
- SV **curpad = AvARRAY(comppad);
+ CV * const outercv = CvOUTSIDE(cv);
+ const U32 seq = CvOUTSIDE_SEQ(cv);
+ AV * const comppad_name = (AV*)AvARRAY(padlist)[0];
+ SV ** const namepad = AvARRAY(comppad_name);
+ AV * const comppad = (AV*)AvARRAY(padlist)[1];
+ SV ** const curpad = AvARRAY(comppad);
for (ix = AvFILLp(comppad_name); ix > 0; ix--) {
- SV *namesv = namepad[ix];
+ SV * const namesv = namepad[ix];
if (namesv && namesv != &PL_sv_undef
- && *SvPVX(namesv) == '&')
+ && *SvPVX_const(namesv) == '&')
{
- CV *innercv = (CV*)curpad[ix];
+ CV * const innercv = (CV*)curpad[ix];
+ U32 inner_rc = SvREFCNT(innercv);
+ assert(inner_rc);
namepad[ix] = Nullsv;
SvREFCNT_dec(namesv);
- curpad[ix] = Nullsv;
- SvREFCNT_dec(innercv);
- if (SvREFCNT(innercv) /* in use, not just a prototype */
+
+ if (SvREFCNT(comppad) < 2) { /* allow for /(?{ sub{} })/ */
+ curpad[ix] = Nullsv;
+ SvREFCNT_dec(innercv);
+ inner_rc--;
+ }
+ if (inner_rc /* in use, not just a prototype */
&& CvOUTSIDE(innercv) == cv)
{
assert(CvWEAKOUTSIDE(innercv));
- CvWEAKOUTSIDE_off(innercv);
- CvOUTSIDE_SEQ(innercv) = seq;
/* don't relink to grandfather if he's being freed */
- if (SvREFCNT(outercv)) {
+ if (outercv && SvREFCNT(outercv)) {
+ CvWEAKOUTSIDE_off(innercv);
CvOUTSIDE(innercv) = outercv;
- SvREFCNT_inc(outercv);
+ CvOUTSIDE_SEQ(innercv) = seq;
+ (void)SvREFCNT_inc(outercv);
}
else {
CvOUTSIDE(innercv) = Nullcv;
}
+
}
+
}
}
}
ix = AvFILLp(padlist);
while (ix >= 0) {
- SV* sv = AvARRAY(padlist)[ix--];
+ SV* const sv = AvARRAY(padlist)[ix--];
if (!sv)
continue;
if (sv == (SV*)PL_comppad_name)
*/
PADOFFSET
-Perl_pad_add_name(pTHX_ char *name, HV* typestash, HV* ourstash, bool fake)
+Perl_pad_add_name(pTHX_ const char *name, HV* typestash, HV* ourstash, bool fake)
{
- PADOFFSET offset = pad_alloc(OP_PADSV, SVs_PADMY);
- SV* namesv = NEWSV(1102, 0);
+ const PADOFFSET offset = pad_alloc(OP_PADSV, SVs_PADMY);
+ SV* const namesv = NEWSV(1102, 0);
ASSERT_CURPAD_ACTIVE("pad_add_name");
if (typestash) {
SvFLAGS(namesv) |= SVpad_TYPED;
- SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*) typestash);
+ SvSTASH_set(namesv, (HV*)SvREFCNT_inc((SV*) typestash));
}
if (ourstash) {
SvFLAGS(namesv) |= SVpad_OUR;
- GvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*) ourstash);
+ GvSTASH(namesv) = ourstash;
+ Perl_sv_add_backref(aTHX_ (SV*)ourstash, namesv);
}
av_store(PL_comppad_name, offset, namesv);
}
else {
/* not yet introduced */
- SvNVX(namesv) = (NV)PAD_MAX; /* min */
- SvIVX(namesv) = 0; /* max */
+ SvNV_set(namesv, (NV)PAD_MAX); /* min */
+ SvIV_set(namesv, 0); /* max */
if (!PL_min_intro_pending)
PL_min_intro_pending = offset;
Allocate a new my or tmp pad entry. For a my, simply push a null SV onto
the end of PL_comppad, but for a tmp, scan the pad from PL_padix upwards
-for a slot which has no name and and no active value.
+for a slot which has no name and no active value.
=cut
*/
retval = AvFILLp(PL_comppad);
}
else {
- SV **names = AvARRAY(PL_comppad_name);
- SSize_t names_fill = AvFILLp(PL_comppad_name);
+ SV * const * const names = AvARRAY(PL_comppad_name);
+ const SSize_t names_fill = AvFILLp(PL_comppad_name);
for (;;) {
/*
* "foreach" index vars temporarily become aliases to non-"my"
"Pad 0x%"UVxf"[0x%"UVxf"] alloc: %ld for %s\n",
PTR2UV(PL_comppad), PTR2UV(PL_curpad), (long) retval,
PL_op_name[optype]));
+#ifdef DEBUG_LEAKING_SCALARS
+ sv->sv_debug_optype = optype;
+ sv->sv_debug_inpad = 1;
+#endif
return (PADOFFSET)retval;
}
Perl_pad_add_anon(pTHX_ SV* sv, OPCODE op_type)
{
PADOFFSET ix;
- SV* name;
-
- name = NEWSV(1106, 0);
+ SV* const name = NEWSV(1106, 0);
sv_upgrade(name, SVt_PVNV);
sv_setpvn(name, "&", 1);
- SvIVX(name) = -1;
- SvNVX(name) = 1;
+ SvIV_set(name, -1);
+ SvNV_set(name, 1);
ix = pad_alloc(op_type, SVs_PADMY);
av_store(PL_comppad_name, ix, name);
/* XXX DAPM use PL_curpad[] ? */
/* XXX DAPM integrate this into pad_add_name ??? */
void
-Perl_pad_check_dup(pTHX_ char *name, bool is_our, HV *ourstash)
+Perl_pad_check_dup(pTHX_ const char *name, bool is_our, const HV *ourstash)
{
- SV **svp, *sv;
+ SV **svp;
PADOFFSET top, off;
ASSERT_CURPAD_ACTIVE("pad_check_dup");
- if (!ckWARN(WARN_MISC) || AvFILLp(PL_comppad_name) < 0)
+ if (AvFILLp(PL_comppad_name) < 0 || !ckWARN(WARN_MISC))
return; /* nothing to check */
svp = AvARRAY(PL_comppad_name);
/* XXX DAPM - why the (I32) cast - shouldn't we ensure they're the same
* type ? */
for (off = top; (I32)off > PL_comppad_name_floor; off--) {
- if ((sv = svp[off])
+ SV * const sv = svp[off];
+ if (sv
&& sv != &PL_sv_undef
&& !SvFAKE(sv)
&& (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0)
- && (!is_our
- || ((SvFLAGS(sv) & SVpad_OUR) && GvSTASH(sv) == ourstash))
- && strEQ(name, SvPVX(sv)))
+ && strEQ(name, SvPVX_const(sv)))
{
+ if (is_our && (SvFLAGS(sv) & SVpad_OUR))
+ break; /* "our" masking "our" */
Perl_warner(aTHX_ packWARN(WARN_MISC),
"\"%s\" variable %s masks earlier declaration in same %s",
(is_our ? "our" : "my"),
/* check the rest of the pad */
if (is_our) {
do {
- if ((sv = svp[off])
+ SV * const sv = svp[off];
+ if (sv
&& sv != &PL_sv_undef
&& !SvFAKE(sv)
&& (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0)
&& ((SvFLAGS(sv) & SVpad_OUR) && GvSTASH(sv) == ourstash)
- && strEQ(name, SvPVX(sv)))
+ && strEQ(name, SvPVX_const(sv)))
{
Perl_warner(aTHX_ packWARN(WARN_MISC),
"\"our\" variable %s redeclared", name);
- Perl_warner(aTHX_ packWARN(WARN_MISC),
- "\t(Did you mean \"local\" instead of \"our\"?)\n");
+ if ((I32)off <= PL_comppad_name_floor)
+ Perl_warner(aTHX_ packWARN(WARN_MISC),
+ "\t(Did you mean \"local\" instead of \"our\"?)\n");
break;
}
} while ( off-- > 0 );
*/
PADOFFSET
-Perl_pad_findmy(pTHX_ char *name)
+Perl_pad_findmy(pTHX_ const char *name)
{
SV *out_sv;
int out_flags;
I32 offset;
- AV *nameav;
+ const AV *nameav;
SV **name_svp;
offset = pad_findlex(name, PL_compcv, PL_cop_seqmax, 1,
nameav = (AV*)AvARRAY(CvPADLIST(PL_compcv))[0];
name_svp = AvARRAY(nameav);
for (offset = AvFILLp(nameav); offset > 0; offset--) {
- SV *namesv = name_svp[offset];
+ const SV * const namesv = name_svp[offset];
if (namesv && namesv != &PL_sv_undef
&& !SvFAKE(namesv)
&& (SvFLAGS(namesv) & SVpad_OUR)
- && strEQ(SvPVX(namesv), name)
+ && strEQ(SvPVX_const(namesv), name)
&& U_32(SvNVX(namesv)) == PAD_MAX /* min */
)
return offset;
return NOT_IN_PAD;
}
+/*
+ * Returns the offset of a lexical $_, if there is one, at run time.
+ * Used by the UNDERBAR XS macro.
+ */
+
+PADOFFSET
+Perl_find_rundefsvoffset(pTHX)
+{
+ SV *out_sv;
+ int out_flags;
+ return pad_findlex("$_", find_runcv(NULL), PL_curcop->cop_seq, 1,
+ Null(SV**), &out_sv, &out_flags);
+}
/*
=for apidoc pad_findlex
STATIC PADOFFSET
-S_pad_findlex(pTHX_ char *name, CV* cv, U32 seq, int warn,
+S_pad_findlex(pTHX_ const char *name, const CV* cv, U32 seq, int warn,
SV** out_capture, SV** out_name_sv, int *out_flags)
{
I32 offset, new_offset;
SV *new_capture;
SV **new_capturep;
- AV *padlist = CvPADLIST(cv);
+ const AV * const padlist = CvPADLIST(cv);
*out_flags = 0;
if (padlist) { /* not an undef CV */
I32 fake_offset = 0;
- AV *nameav = (AV*)AvARRAY(padlist)[0];
- SV **name_svp = AvARRAY(nameav);
+ const AV * const nameav = (AV*)AvARRAY(padlist)[0];
+ SV * const * const name_svp = AvARRAY(nameav);
for (offset = AvFILLp(nameav); offset > 0; offset--) {
- SV *namesv = name_svp[offset];
+ const SV * const namesv = name_svp[offset];
if (namesv && namesv != &PL_sv_undef
- && strEQ(SvPVX(namesv), name))
+ && strEQ(SvPVX_const(namesv), name))
{
if (SvFAKE(namesv))
fake_offset = offset; /* in case we don't find a real one */
"Pad findlex cv=0x%"UVxf" chasing lex in outer pad\n",
PTR2UV(cv)));
n = *out_name_sv;
- pad_findlex(name, CvOUTSIDE(cv), CvOUTSIDE_SEQ(cv),
+ (void) pad_findlex(name, CvOUTSIDE(cv),
+ CvOUTSIDE_SEQ(cv),
newwarn, out_capture, out_name_sv, out_flags);
*out_name_sv = n;
return offset;
{
SV *new_namesv;
- AV *ocomppad_name = PL_comppad_name;
- PAD *ocomppad = PL_comppad;
+ AV * const ocomppad_name = PL_comppad_name;
+ PAD * const ocomppad = PL_comppad;
PL_comppad_name = (AV*)AvARRAY(padlist)[0];
PL_comppad = (AV*)AvARRAY(padlist)[1];
PL_curpad = AvARRAY(PL_comppad);
new_offset = pad_add_name(
- SvPVX(*out_name_sv),
+ SvPVX_const(*out_name_sv),
(SvFLAGS(*out_name_sv) & SVpad_TYPED)
? SvSTASH(*out_name_sv) : Nullhv,
(SvFLAGS(*out_name_sv) & SVpad_OUR)
);
new_namesv = AvARRAY(PL_comppad_name)[new_offset];
- SvIVX(new_namesv) = *out_flags;
+ SvIV_set(new_namesv, *out_flags);
- SvNVX(new_namesv) = (NV)0;
+ SvNV_set(new_namesv, (NV)0);
if (SvFLAGS(new_namesv) & SVpad_OUR) {
/* do nothing */
}
else if (CvLATE(cv)) {
/* delayed creation - just note the offset within parent pad */
- SvNVX(new_namesv) = (NV)offset;
+ SvNV_set(new_namesv, (NV)offset);
CvCLONE_on(cv);
}
else {
Perl_intro_my(pTHX)
{
SV **svp;
- SV *sv;
I32 i;
ASSERT_CURPAD_ACTIVE("intro_my");
svp = AvARRAY(PL_comppad_name);
for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) {
- if ((sv = svp[i]) && sv != &PL_sv_undef
- && !SvFAKE(sv) && !SvIVX(sv))
- {
- SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */
- SvNVX(sv) = (NV)PL_cop_seqmax;
+ SV * const sv = svp[i];
+
+ if (sv && sv != &PL_sv_undef && !SvFAKE(sv) && !SvIVX(sv)) {
+ SvIV_set(sv, PAD_MAX); /* Don't know scope end yet. */
+ SvNV_set(sv, (NV)PL_cop_seqmax);
DEBUG_Xv(PerlIO_printf(Perl_debug_log,
"Pad intromy: %ld \"%s\", (%ld,%ld)\n",
- (long)i, SvPVX(sv),
+ (long)i, SvPVX_const(sv),
(long)U_32(SvNVX(sv)), (long)SvIVX(sv))
);
}
Perl_pad_leavemy(pTHX)
{
I32 off;
- SV **svp = AvARRAY(PL_comppad_name);
- SV *sv;
+ SV * const * const svp = AvARRAY(PL_comppad_name);
PL_pad_reset_pending = FALSE;
ASSERT_CURPAD_ACTIVE("pad_leavemy");
if (PL_min_intro_pending && PL_comppad_name_fill < PL_min_intro_pending) {
for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) {
- if ((sv = svp[off]) && sv != &PL_sv_undef
+ const SV * const sv = svp[off];
+ if (sv && sv != &PL_sv_undef
&& !SvFAKE(sv) && ckWARN_d(WARN_INTERNAL))
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
"%"SVf" never introduced", sv);
}
/* "Deintroduce" my variables that are leaving with this scope. */
for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_fill; off--) {
- if ((sv = svp[off]) && sv != &PL_sv_undef
- && !SvFAKE(sv) && SvIVX(sv) == PAD_MAX)
- {
- SvIVX(sv) = PL_cop_seqmax;
+ const SV * const sv = svp[off];
+ if (sv && sv != &PL_sv_undef && !SvFAKE(sv) && SvIVX(sv) == PAD_MAX) {
+ SvIV_set(sv, PL_cop_seqmax);
DEBUG_Xv(PerlIO_printf(Perl_debug_log,
"Pad leavemy: %ld \"%s\", (%ld,%ld)\n",
- (long)off, SvPVX(sv),
+ (long)off, SvPVX_const(sv),
(long)U_32(SvNVX(sv)), (long)SvIVX(sv))
);
}
if (refadjust)
SvREFCNT_dec(PL_curpad[po]);
+
+ /* if pad tmps aren't shared between ops, then there's no need to
+ * create a new tmp when an existing op is freed */
+#ifdef USE_BROKEN_PAD_RESET
PL_curpad[po] = NEWSV(1107,0);
SvPADTMP_on(PL_curpad[po]);
+#else
+ PL_curpad[po] = &PL_sv_undef;
+#endif
if ((I32)po < PL_padix)
PL_padix = po - 1;
}
Perl_pad_reset(pTHX)
{
#ifdef USE_BROKEN_PAD_RESET
- register I32 po;
-
if (AvARRAY(PL_comppad) != PL_curpad)
Perl_croak(aTHX_ "panic: pad_reset curpad");
);
if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */
+ register I32 po;
for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) {
if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po]))
SvPADTMP_off(PL_curpad[po]);
void
Perl_pad_tidy(pTHX_ padtidy_type type)
{
- PADOFFSET ix;
- CV *cv;
+ dVAR;
ASSERT_CURPAD_ACTIVE("pad_tidy");
*/
if (PL_cv_has_eval || PL_perldb) {
+ const CV *cv;
for (cv = PL_compcv ;cv; cv = CvOUTSIDE(cv)) {
if (cv != PL_compcv && CvCOMPILED(cv))
break; /* no need to mark already-compiled code */
av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv);
if (type == padtidy_SUBCLONE) {
- SV **namep = AvARRAY(PL_comppad_name);
+ SV * const * const namep = AvARRAY(PL_comppad_name);
+ PADOFFSET ix;
for (ix = AvFILLp(PL_comppad); ix > 0; ix--) {
SV *namesv;
*/
if (!((namesv = namep[ix]) != Nullsv &&
namesv != &PL_sv_undef &&
- *SvPVX(namesv) == '&'))
+ *SvPVX_const(namesv) == '&'))
{
SvREFCNT_dec(PL_curpad[ix]);
PL_curpad[ix] = Nullsv;
}
else if (type == padtidy_SUB) {
/* XXX DAPM this same bit of code keeps appearing !!! Rationalise? */
- AV *av = newAV(); /* Will be @_ */
+ AV * const av = newAV(); /* Will be @_ */
av_extend(av, 0);
av_store(PL_comppad, 0, (SV*)av);
- AvFLAGS(av) = AVf_REIFY;
+ AvREIFY_only(av);
}
/* XXX DAPM rationalise these two similar branches */
if (type == padtidy_SUB) {
+ PADOFFSET ix;
for (ix = AvFILLp(PL_comppad); ix > 0; ix--) {
if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix]))
continue;
}
}
else if (type == padtidy_FORMAT) {
+ PADOFFSET ix;
for (ix = AvFILLp(PL_comppad); ix > 0; ix--) {
if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix]))
SvPADTMP_on(PL_curpad[ix]);
/*
=for apidoc pad_free
-Free the SV at offet po in the current pad.
+Free the SV at offset po in the current pad.
=cut
*/
#ifdef USE_ITHREADS
/* SV could be a shared hash key (eg bugid #19022) */
if (
-#ifdef PERL_COPY_ON_WRITE
+#ifdef PERL_OLD_COPY_ON_WRITE
!SvIsCOW(PL_curpad[po])
#else
!SvFAKE(PL_curpad[po])
void
Perl_do_dump_pad(pTHX_ I32 level, PerlIO *file, PADLIST *padlist, int full)
{
- AV *pad_name;
- AV *pad;
+ const AV *pad_name;
+ const AV *pad;
SV **pname;
SV **ppad;
- SV *namesv;
I32 ix;
if (!padlist) {
);
for (ix = 1; ix <= AvFILLp(pad_name); ix++) {
- namesv = pname[ix];
+ const SV *namesv = pname[ix];
if (namesv && namesv == &PL_sv_undef) {
namesv = Nullsv;
}
if (namesv) {
if (SvFAKE(namesv))
Perl_dump_indent(aTHX_ level+1, file,
- "%2d. 0x%"UVxf"<%lu> FAKE \"%s\" flags=0x%x index=%lu\n",
+ "%2d. 0x%"UVxf"<%lu> FAKE \"%s\" flags=0x%lx index=%lu\n",
(int) ix,
PTR2UV(ppad[ix]),
(unsigned long) (ppad[ix] ? SvREFCNT(ppad[ix]) : 0),
- SvPVX(namesv),
+ SvPVX_const(namesv),
(unsigned long)SvIVX(namesv),
(unsigned long)SvNVX(namesv)
(unsigned long) (ppad[ix] ? SvREFCNT(ppad[ix]) : 0),
(long)U_32(SvNVX(namesv)),
(long)SvIVX(namesv),
- SvPVX(namesv)
+ SvPVX_const(namesv)
);
}
else if (full) {
#ifdef DEBUGGING
STATIC void
-S_cv_dump(pTHX_ CV *cv, char *title)
+S_cv_dump(pTHX_ const CV *cv, const char *title)
{
- CV *outside = CvOUTSIDE(cv);
- AV* padlist = CvPADLIST(cv);
+ const CV * const outside = CvOUTSIDE(cv);
+ AV* const padlist = CvPADLIST(cv);
PerlIO_printf(Perl_debug_log,
" %s: CV=0x%"UVxf" (%s), OUTSIDE=0x%"UVxf" (%s)\n",
CV *
Perl_cv_clone(pTHX_ CV *proto)
{
+ dVAR;
I32 ix;
- AV* protopadlist = CvPADLIST(proto);
- AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE);
- AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE);
- SV** pname = AvARRAY(protopad_name);
- SV** ppad = AvARRAY(protopad);
- I32 fname = AvFILLp(protopad_name);
- I32 fpad = AvFILLp(protopad);
- AV* comppadlist;
+ AV* const protopadlist = CvPADLIST(proto);
+ const AV* const protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE);
+ const AV* const protopad = (AV*)*av_fetch(protopadlist, 1, FALSE);
+ SV** const pname = AvARRAY(protopad_name);
+ SV** const ppad = AvARRAY(protopad);
+ const I32 fname = AvFILLp(protopad_name);
+ const I32 fpad = AvFILLp(protopad);
CV* cv;
SV** outpad;
CV* outside;
#endif
CvGV(cv) = CvGV(proto);
CvSTASH(cv) = CvSTASH(proto);
+ OP_REFCNT_LOCK;
CvROOT(cv) = OpREFCNT_inc(CvROOT(proto));
+ OP_REFCNT_UNLOCK;
CvSTART(cv) = CvSTART(proto);
CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside);
CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(proto);
if (SvPOK(proto))
- sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto));
+ sv_setpvn((SV*)cv, SvPVX_const(proto), SvCUR(proto));
- CvPADLIST(cv) = comppadlist = pad_new(padnew_CLONE|padnew_SAVE);
+ CvPADLIST(cv) = pad_new(padnew_CLONE|padnew_SAVE);
av_fill(PL_comppad, fpad);
for (ix = fname; ix >= 0; ix--)
outpad = AvARRAY(AvARRAY(CvPADLIST(outside))[depth]);
for (ix = fpad; ix > 0; ix--) {
- SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
+ SV* const namesv = (ix <= fname) ? pname[ix] : Nullsv;
SV *sv = Nullsv;
if (namesv && namesv != &PL_sv_undef) { /* lexical */
if (SvFAKE(namesv)) { /* lexical from outside? */
if (SvTYPE(proto) == SVt_PVFM && SvPADSTALE(sv)) {
if (ckWARN(WARN_CLOSURE))
Perl_warner(aTHX_ packWARN(WARN_CLOSURE),
- "Variable \"%s\" is not available", SvPVX(namesv));
+ "Variable \"%s\" is not available", SvPVX_const(namesv));
sv = Nullsv;
}
else {
}
}
if (!sv) {
- char *name = SvPVX(namesv);
- if (*name == '&')
+ const char sigil = SvPVX_const(namesv)[0];
+ if (sigil == '&')
sv = SvREFCNT_inc(ppad[ix]);
- else if (*name == '@')
+ else if (sigil == '@')
sv = (SV*)newAV();
- else if (*name == '%')
+ else if (sigil == '%')
sv = (SV*)newHV();
else
sv = NEWSV(0, 0);
* so try to grab the current const value, and if successful,
* turn into a const sub:
*/
- SV* const_sv = op_const_sv(CvSTART(cv), cv);
+ SV* const const_sv = op_const_sv(CvSTART(cv), cv);
if (const_sv) {
SvREFCNT_dec(cv);
- cv = newCONSTSUB(CvSTASH(proto), 0, const_sv);
+ cv = newCONSTSUB(CvSTASH(proto), Nullch, const_sv);
}
else {
CvCONST_off(cv);
Perl_pad_fixup_inner_anons(pTHX_ PADLIST *padlist, CV *old_cv, CV *new_cv)
{
I32 ix;
- AV *comppad_name = (AV*)AvARRAY(padlist)[0];
- AV *comppad = (AV*)AvARRAY(padlist)[1];
- SV **namepad = AvARRAY(comppad_name);
- SV **curpad = AvARRAY(comppad);
+ AV * const comppad_name = (AV*)AvARRAY(padlist)[0];
+ AV * const comppad = (AV*)AvARRAY(padlist)[1];
+ SV ** const namepad = AvARRAY(comppad_name);
+ SV ** const curpad = AvARRAY(comppad);
for (ix = AvFILLp(comppad_name); ix > 0; ix--) {
- SV *namesv = namepad[ix];
+ const SV * const namesv = namepad[ix];
if (namesv && namesv != &PL_sv_undef
- && *SvPVX(namesv) == '&')
+ && *SvPVX_const(namesv) == '&')
{
- CV *innercv = (CV*)curpad[ix];
+ CV * const innercv = (CV*)curpad[ix];
assert(CvWEAKOUTSIDE(innercv));
assert(CvOUTSIDE(innercv) == old_cv);
CvOUTSIDE(innercv) = new_cv;
=for apidoc pad_push
Push a new pad frame onto the padlist, unless there's already a pad at
-this depth, in which case don't bother creating a new one.
-If has_args is true, give the new pad an @_ in slot zero.
+this depth, in which case don't bother creating a new one. Then give
+the new pad an @_ in slot zero.
=cut
*/
void
-Perl_pad_push(pTHX_ PADLIST *padlist, int depth, int has_args)
+Perl_pad_push(pTHX_ PADLIST *padlist, int depth)
{
if (depth <= AvFILLp(padlist))
return;
{
- SV** svp = AvARRAY(padlist);
- AV *newpad = newAV();
- SV **oldpad = AvARRAY(svp[depth-1]);
+ SV** const svp = AvARRAY(padlist);
+ AV* const newpad = newAV();
+ SV** const oldpad = AvARRAY(svp[depth-1]);
I32 ix = AvFILLp((AV*)svp[1]);
- I32 names_fill = AvFILLp((AV*)svp[0]);
- SV** names = AvARRAY(svp[0]);
- SV* sv;
+ const I32 names_fill = AvFILLp((AV*)svp[0]);
+ SV** const names = AvARRAY(svp[0]);
+ AV *av;
+
for ( ;ix > 0; ix--) {
if (names_fill >= ix && names[ix] != &PL_sv_undef) {
- char *name = SvPVX(names[ix]);
- if ((SvFLAGS(names[ix]) & SVf_FAKE) || *name == '&') {
+ const char sigil = SvPVX_const(names[ix])[0];
+ if ((SvFLAGS(names[ix]) & SVf_FAKE) || sigil == '&') {
/* outer lexical or anon code */
av_store(newpad, ix, SvREFCNT_inc(oldpad[ix]));
}
else { /* our own lexical */
- if (*name == '@')
- av_store(newpad, ix, sv = (SV*)newAV());
- else if (*name == '%')
- av_store(newpad, ix, sv = (SV*)newHV());
+ SV *sv;
+ if (sigil == '@')
+ sv = (SV*)newAV();
+ else if (sigil == '%')
+ sv = (SV*)newHV();
else
- av_store(newpad, ix, sv = NEWSV(0, 0));
+ sv = NEWSV(0, 0);
+ av_store(newpad, ix, sv);
SvPADMY_on(sv);
}
}
else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) {
- av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix]));
+ av_store(newpad, ix, SvREFCNT_inc(oldpad[ix]));
}
else {
/* save temporaries on recursion? */
- av_store(newpad, ix, sv = NEWSV(0, 0));
+ SV * const sv = NEWSV(0, 0);
+ av_store(newpad, ix, sv);
SvPADTMP_on(sv);
}
}
- if (has_args) {
- AV* av = newAV();
- av_extend(av, 0);
- av_store(newpad, 0, (SV*)av);
- AvFLAGS(av) = AVf_REIFY;
- }
+ av = newAV();
+ av_extend(av, 0);
+ av_store(newpad, 0, (SV*)av);
+ AvREIFY_only(av);
+
av_store(padlist, depth, (SV*)newpad);
AvFILLp(padlist) = depth;
}
}
+
+
+HV *
+Perl_pad_compname_type(pTHX_ const PADOFFSET po)
+{
+ SV* const * const av = av_fetch(PL_comppad_name, po, FALSE);
+ if ( SvFLAGS(*av) & SVpad_TYPED ) {
+ return SvSTASH(*av);
+ }
+ return Nullhv;
+}
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
https://perl5.git.perl.org / perl5.git / blobdiff