/* universal.c
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- * 2005, by Larry Wall and others
+ * 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.
* The main guts of traverse_isa was actually copied from gv_fetchmeth
*/
-STATIC SV *
-S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash,
+STATIC bool
+S_isa_lookup(pTHX_ HV *stash, const char *name, const HV* const name_stash,
int len, int level)
{
+ dVAR;
AV* av;
GV* gv;
GV** gvp;
- HV* hv = Nullhv;
- SV* subgen = Nullsv;
+ HV* hv = NULL;
+ SV* subgen = NULL;
const char *hvname;
/* A stash/class can go by many names (ie. User == main::User), so
we compare the stash itself just in case */
- if (name_stash && (stash == name_stash))
- return &PL_sv_yes;
+ if (name_stash && ((const HV *)stash == name_stash))
+ return TRUE;
hvname = HvNAME_get(stash);
if (strEQ(hvname, name))
- return &PL_sv_yes;
+ return TRUE;
if (strEQ(name, "UNIVERSAL"))
- return &PL_sv_yes;
+ return TRUE;
if (level > 100)
Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'",
hvname);
- gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE);
+ gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", FALSE);
if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv))
&& (hv = GvHV(gv)))
{
if (SvIV(subgen) == (IV)PL_sub_generation) {
- SV* sv;
SV** const svp = (SV**)hv_fetch(hv, name, len, FALSE);
- if (svp && (sv = *svp) != (SV*)&PL_sv_undef) {
- DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n",
- name, hvname) );
- return sv;
+ if (svp) {
+ SV * const sv = *svp;
+#ifdef DEBUGGING
+ if (sv != &PL_sv_undef)
+ DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n",
+ name, hvname) );
+#endif
+ return (sv == &PL_sv_yes);
}
}
else {
}
}
- gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE);
+ gvp = (GV**)hv_fetchs(stash, "ISA", FALSE);
if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) {
if (!hv || !subgen) {
- gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE);
+ gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", TRUE);
gv = *gvp;
if (ckWARN(WARN_MISC))
Perl_warner(aTHX_ packWARN(WARN_SYNTAX),
"Can't locate package %"SVf" for @%s::ISA",
- sv, hvname);
+ (void*)sv, hvname);
continue;
}
- if (&PL_sv_yes == isa_lookup(basestash, name, name_stash,
- len, level + 1)) {
+ if (isa_lookup(basestash, name, name_stash, len, level + 1)) {
(void)hv_store(hv,name,len,&PL_sv_yes,0);
- return &PL_sv_yes;
+ return TRUE;
}
}
(void)hv_store(hv,name,len,&PL_sv_no,0);
}
}
- return &PL_sv_no;
+ return FALSE;
}
/*
=for apidoc sv_derived_from
-Returns a boolean indicating whether the SV is derived from the specified
-class. This is the function that implements C<UNIVERSAL::isa>. It works
-for class names as well as for objects.
+Returns a boolean indicating whether the SV is derived from the specified class
+I<at the C level>. To check derivation at the Perl level, call C<isa()> as a
+normal Perl method.
=cut
*/
bool
Perl_sv_derived_from(pTHX_ SV *sv, const char *name)
{
- const char *type = Nullch;
- HV *stash = Nullhv;
- HV *name_stash;
+ dVAR;
+ HV *stash;
SvGETMAGIC(sv);
if (SvROK(sv)) {
+ const char *type;
sv = SvRV(sv);
type = sv_reftype(sv,0);
- if (SvOBJECT(sv))
- stash = SvSTASH(sv);
+ if (type && strEQ(type,name))
+ return TRUE;
+ stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL;
}
else {
stash = gv_stashsv(sv, FALSE);
}
- name_stash = gv_stashpv(name, FALSE);
+ if (stash) {
+ HV * const name_stash = gv_stashpv(name, FALSE);
+ return isa_lookup(stash, name, name_stash, strlen(name), 0);
+ }
+ else
+ return FALSE;
- return (type && strEQ(type,name)) ||
- (stash && isa_lookup(stash, name, name_stash, strlen(name), 0)
- == &PL_sv_yes)
- ? TRUE
- : FALSE ;
}
+/*
+=for apidoc sv_does
+
+Returns a boolean indicating whether the SV performs a specific, named role.
+The SV can be a Perl object or the name of a Perl class.
+
+=cut
+*/
+
#include "XSUB.h"
+bool
+Perl_sv_does(pTHX_ SV *sv, const char *name)
+{
+ const char *classname;
+ bool does_it;
+
+ dSP;
+ ENTER;
+ SAVETMPS;
+
+ SvGETMAGIC(sv);
+
+ if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
+ || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
+ return FALSE;
+
+ if (sv_isobject(sv)) {
+ classname = sv_reftype(SvRV(sv),TRUE);
+ } else {
+ classname = SvPV(sv,PL_na);
+ }
+
+ if (strEQ(name,classname))
+ return TRUE;
+
+ PUSHMARK(SP);
+ XPUSHs(sv);
+ XPUSHs(sv_2mortal(newSVpv(name, 0)));
+ PUTBACK;
+
+ call_method("isa", G_SCALAR);
+ SPAGAIN;
+
+ does_it = SvTRUE( TOPs );
+ FREETMPS;
+ LEAVE;
+
+ return does_it;
+}
+
PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv);
PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv);
+PERL_XS_EXPORT_C void XS_UNIVERSAL_DOES(pTHX_ CV *cv);
PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv);
XS(XS_version_new);
XS(XS_version_stringify);
XS(XS_Internals_hash_seed);
XS(XS_Internals_rehash_seed);
XS(XS_Internals_HvREHASH);
-XS(XS_utf8_SWASHGET_heavy);
+XS(XS_Internals_inc_sub_generation);
void
Perl_boot_core_UNIVERSAL(pTHX)
{
- const char file[] = __FILE__;
+ dVAR;
+ static const char file[] = __FILE__;
newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file);
newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file);
+ newXS("UNIVERSAL::DOES", XS_UNIVERSAL_DOES, file);
newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file);
{
/* register the overloading (type 'A') magic */
newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, "");
newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, "");
newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%");
- newXS("utf8::SWASHGET_heavy", XS_utf8_SWASHGET_heavy, file);
+ newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation,
+ file, "");
}
XS(XS_UNIVERSAL_isa)
{
+ dVAR;
dXSARGS;
if (items != 2)
XS(XS_UNIVERSAL_can)
{
+ dVAR;
dXSARGS;
SV *sv;
const char *name;
XSRETURN(1);
}
+XS(XS_UNIVERSAL_DOES)
+{
+ dVAR;
+ dXSARGS;
+
+ if (items != 2)
+ Perl_croak(aTHX_ "Usage: invocant->does(kind)");
+ else {
+ SV * const sv = ST(0);
+ const char *name;
+
+ name = SvPV_nolen_const(ST(1));
+ if (sv_does( sv, name ))
+ XSRETURN_YES;
+
+ XSRETURN_NO;
+ }
+}
+
XS(XS_UNIVERSAL_VERSION)
{
+ dVAR;
dXSARGS;
HV *pkg;
GV **gvp;
pkg = gv_stashsv(ST(0), FALSE);
}
- gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**);
+ gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
SV * const nsv = sv_newmortal();
sv = nsv;
if ( !sv_derived_from(sv, "version"))
upg_version(sv);
- undef = Nullch;
+ undef = NULL;
}
else {
sv = (SV*)&PL_sv_undef;
if ( vcmp( req, sv ) > 0 )
Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--"
- "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg),
- vnumify(req),vnormal(req),vnumify(sv),vnormal(sv));
+ "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg),
+ (void*)vnumify(req),
+ (void*)vnormal(req),
+ (void*)vnumify(sv),
+ (void*)vnormal(sv));
}
if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
XS(XS_version_new)
{
+ dVAR;
dXSARGS;
if (items > 3)
Perl_croak(aTHX_ "Usage: version::new(class, version)");
? HvNAME(SvSTASH(SvRV(ST(0))))
: (char *)SvPV_nolen(ST(0));
- if ( items == 1 ) {
- /* no parameter provided */
- if ( sv_isobject(ST(0)) ) {
- /* copy existing object */
- vs = ST(0);
- }
- else {
- /* create empty object */
- vs = sv_newmortal();
- sv_setpvn(vs,"",0);
- }
+ if ( items == 1 || vs == &PL_sv_undef ) { /* no param or explicit undef */
+ /* create empty object */
+ vs = sv_newmortal();
+ sv_setpvn(vs,"",0);
}
else if ( items == 3 ) {
vs = sv_newmortal();
XS(XS_version_stringify)
{
+ dVAR;
dXSARGS;
if (items < 1)
Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)");
XS(XS_version_numify)
{
+ dVAR;
dXSARGS;
if (items < 1)
Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)");
XS(XS_version_normal)
{
+ dVAR;
dXSARGS;
if (items < 1)
Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)");
XS(XS_version_vcmp)
{
+ dVAR;
dXSARGS;
if (items < 1)
Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)");
XS(XS_version_boolean)
{
- dXSARGS;
- if (items < 1)
- Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)");
- SP -= items;
+ dVAR;
+ dXSARGS;
+ if (items < 1)
+ Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)");
+ SP -= items;
if (sv_derived_from(ST(0), "version")) {
SV * const lobj = SvRV(ST(0));
- SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) );
+ SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) );
PUSHs(sv_2mortal(rs));
PUTBACK;
return;
XS(XS_version_noop)
{
+ dVAR;
dXSARGS;
if (items < 1)
Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)");
XS(XS_version_is_alpha)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)");
XS(XS_version_qv)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: version::qv(ver)");
if ( SvNOK(ver) ) /* may get too much accuracy */
{
char tbuf[64];
- const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver));
+#ifdef USE_LOCALE_NUMERIC
+ char *loc = setlocale(LC_NUMERIC, "C");
+#endif
+ STRLEN len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVgf, SvNVX(ver));
+#ifdef USE_LOCALE_NUMERIC
+ setlocale(LC_NUMERIC, loc);
+#endif
+ while (tbuf[len-1] == '0' && len > 0) len--;
version = savepvn(tbuf, len);
}
else
XS(XS_utf8_is_utf8)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)");
XS(XS_utf8_valid)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: utf8::valid(sv)");
XS(XS_utf8_encode)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: utf8::encode(sv)");
XS(XS_utf8_decode)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: utf8::decode(sv)");
XS(XS_utf8_upgrade)
{
+ dVAR;
dXSARGS;
if (items != 1)
Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)");
XS(XS_utf8_downgrade)
{
+ dVAR;
dXSARGS;
if (items < 1 || items > 2)
Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)");
XS(XS_utf8_native_to_unicode)
{
+ dVAR;
dXSARGS;
const UV uv = SvUV(ST(0));
XS(XS_utf8_unicode_to_native)
{
+ dVAR;
dXSARGS;
const UV uv = SvUV(ST(0));
XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */
{
+ dVAR;
dXSARGS;
SV * const sv = SvRV(ST(0));
XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */
{
+ dVAR;
dXSARGS;
SV * const sv = SvRV(ST(0));
XS(XS_Internals_hv_clear_placehold)
{
+ dVAR;
dXSARGS;
if (items != 1)
XS(XS_Regexp_DESTROY)
{
+ PERL_UNUSED_CONTEXT;
PERL_UNUSED_ARG(cv);
}
XS(XS_PerlIO_get_layers)
{
+ dVAR;
dXSARGS;
if (items < 1 || items % 2 == 0)
Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])");
if (SvROK(sv) && isGV(SvRV(sv)))
gv = (GV*)SvRV(sv);
else if (SvPOKp(sv))
- gv = gv_fetchsv(sv, FALSE, SVt_PVIO);
+ gv = gv_fetchsv(sv, 0, SVt_PVIO);
}
if (gv && (io = GvIO(gv))) {
else {
if (namok && argok)
XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")",
- *namsvp, *argsvp));
+ (void*)*namsvp,
+ (void*)*argsvp));
else if (namok)
- XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp));
+ XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf,
+ (void*)*namsvp));
else
XPUSHs(&PL_sv_undef);
nitem++;
const IV flags = SvIVX(*flgsvp);
if (flags & PERLIO_F_UTF8) {
- XPUSHs(newSVpvn("utf8", 4));
+ XPUSHs(newSVpvs("utf8"));
nitem++;
}
}
XS(XS_Internals_hash_seed)
{
+ dVAR;
/* Using dXSARGS would also have dITEM and dSP,
* which define 2 unused local variables. */
dAXMARK;
XS(XS_Internals_rehash_seed)
{
+ dVAR;
/* Using dXSARGS would also have dITEM and dSP,
* which define 2 unused local variables. */
dAXMARK;
XS(XS_Internals_HvREHASH) /* Subject to change */
{
+ dVAR;
dXSARGS;
if (SvROK(ST(0))) {
const HV * const hv = (HV *) SvRV(ST(0));
Perl_croak(aTHX_ "Internals::HvREHASH $hashref");
}
-XS(XS_utf8_SWASHGET_heavy)
+XS(XS_Internals_inc_sub_generation)
{
- dXSARGS;
- if (items != 4) {
- Perl_croak(aTHX_
- "Usage: utf8::SWASHGET_heavy($self, $start, $len, DEBUG)");
- }
- {
- SV* self = ST(0);
- const I32 i_start = (I32)SvIV(ST(1));
- const I32 i_len = (I32)SvIV(ST(2));
- const I32 debug = (I32)SvIV(ST(3));
- U32 start = (U32)i_start;
- U32 len = (U32)i_len;
-
- HV *hv;
- SV **listsvp, **typesvp, **bitssvp, **nonesvp, **extssvp, *swatch;
- U8 *l, *lend, *x, *xend, *s, *nextline;
- STRLEN lcur, xcur, scur;
- U8* typestr;
- int typeto;
- U32 bits, none, end, octets;
-
- if (SvROK(self) && SvTYPE(SvRV(self))==SVt_PVHV)
- hv = (HV*)SvRV(self);
- else
- Perl_croak(aTHX_ "hv is not a hash reference");
-
- if (i_start < 0)
- Perl_croak(aTHX_ "SWASHGET negative start");
- if (i_len < 0)
- Perl_croak(aTHX_ "SWASHGET negative len");
-
- listsvp = hv_fetch(hv, "LIST", 4, FALSE);
- typesvp = hv_fetch(hv, "TYPE", 4, FALSE);
- bitssvp = hv_fetch(hv, "BITS", 4, FALSE);
- nonesvp = hv_fetch(hv, "NONE", 4, FALSE);
- extssvp = hv_fetch(hv, "EXTRAS", 6, FALSE);
- typestr = SvPV_nolen(*typesvp);
- typeto = typestr[0] == 'T' && typestr[1] == 'o';
- bits = (U32)SvUV(*bitssvp);
- none = (U32)SvUV(*nonesvp);
- end = start + len;
- octets = bits >> 3; /* if bits == 1, then octets == 0 */
-
- if (bits != 1 && bits != 8 && bits != 16 && bits != 32) {
- Perl_croak(aTHX_ "SWASHGET unknown bits %"UVuf, (UV)bits);
- }
- if (debug) {
- char* selfstr = SvPV_nolen(self);
- PerlIO_printf(Perl_error_log, "SWASHGET ");
- PerlIO_printf(Perl_error_log, "%s %"UVuf" %"UVuf" ",
- selfstr, (UV)start, (UV)len);
- PerlIO_printf(Perl_error_log, "[%s/%"UVuf"/%"UVuf"]\n",
- typestr, (UV)bits, (UV)none);
- }
-
- /* initialize $swatch */
- swatch = newSVpvn("",0);
- scur = octets ? (len * octets) : (len + 7) / 8;
- SvGROW(swatch, scur + 1);
- s = (U8*)SvPVX(swatch);
- if (octets && none) {
- const U8* e = s + scur;
- while (s < e) {
- if (bits == 8)
- *s++ = (U8)(none & 0xff);
- else if (bits == 16) {
- *s++ = (U8)((none >> 8) & 0xff);
- *s++ = (U8)( none & 0xff);
- }
- else if (bits == 32) {
- *s++ = (U8)((none >> 24) & 0xff);
- *s++ = (U8)((none >> 16) & 0xff);
- *s++ = (U8)((none >> 8) & 0xff);
- *s++ = (U8)( none & 0xff);
- }
- }
- *s = '\0';
- }
- else {
- (void)memzero((U8*)s, scur + 1);
- }
- SvCUR_set(swatch, scur);
- s = (U8*)SvPVX(swatch);
-
- /* read $self->{LIST} */
- l = (U8*)SvPV(*listsvp, lcur);
- lend = l + lcur;
- while (l < lend) {
- U32 min, max, val, key;
- STRLEN numlen;
- I32 flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX;
-
- nextline = (U8*)memchr(l, '\n', lend - l);
-
- numlen = lend - l;
- min = (U32)grok_hex(l, &numlen, &flags, NULL);
- if (numlen)
- l += numlen;
- else if (nextline) {
- l = nextline + 1; /* 1 is length of "\n" */
- continue;
- }
- else {
- l = lend; /* to the end of LIST, at which no \n */
- break;
- }
-
- if (isBLANK(*l)) {
- ++l;
- flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX;
- numlen = lend - l;
- max = (U32)grok_hex(l, &numlen, &flags, NULL);
- if (numlen)
- l += numlen;
- else
- max = min;
-
- if (octets) {
- if (isBLANK(*l)) {
- ++l;
- flags = PERL_SCAN_SILENT_ILLDIGIT |
- PERL_SCAN_DISALLOW_PREFIX;
- numlen = lend - l;
- val = (U32)grok_hex(l, &numlen, &flags, NULL);
- if (numlen)
- l += numlen;
- else
- val = 0;
- }
- else {
- val = 0;
- if (typeto) {
- Perl_croak(aTHX_ "%s: illegal mapping '%s'",
- typestr, l);
- }
- }
- }
- }
- else {
- max = min;
- if (octets) {
- val = 0;
- if (typeto) {
- Perl_croak(aTHX_ "%s: illegal mapping '%s'",
- typestr, l);
- }
- }
- }
-
- if (nextline)
- l = nextline + 1;
- else
- l = lend;
-
- if (max < start)
- continue;
-
- if (octets) {
- if (debug) {
- PerlIO_printf(Perl_error_log,
- "%"UVuf" %"UVuf" %"UVuf"\n",
- (UV)min, (UV)max, (UV)val);
- }
- if (min < start) {
- if (!none || val < none) {
- val += start - min;
- }
- min = start;
- }
- for (key = min; key <= max; key++) {
- U32 offset;
- if (key >= end)
- goto go_out_list;
- if (debug) {
- PerlIO_printf(Perl_error_log,
- "%"UVuf" => %"UVuf"\n",
- (UV)key, (UV)val);
- }
-
- /* offset must be non-negative (start <= min <= key < end) */
- offset = (key - start) * octets;
- if (bits == 8)
- s[offset] = (U8)(val & 0xff);
- else if (bits == 16) {
- s[offset ] = (U8)((val >> 8) & 0xff);
- s[offset + 1] = (U8)( val & 0xff);
- }
- else if (bits == 32) {
- s[offset ] = (U8)((val >> 24) & 0xff);
- s[offset + 1] = (U8)((val >> 16) & 0xff);
- s[offset + 2] = (U8)((val >> 8) & 0xff);
- s[offset + 3] = (U8)( val & 0xff);
- }
-
- if (!none || val < none)
- ++val;
- }
- }
- else {
- if (min < start)
- min = start;
- for (key = min; key <= max; key++) {
- U32 offset = key - start;
- if (key >= end)
- goto go_out_list;
- if (debug) {
- PerlIO_printf(Perl_error_log,
- "%"UVuf" => 1\n", (UV)key);
- }
- s[offset >> 3] |= 1 << (offset & 7);
- }
- }
- }
- go_out_list:
-
- /* read $self->{EXTRAS} */
- x = (U8*)SvPV(*extssvp, xcur);
- xend = x + xcur;
- while (x < xend) {
- STRLEN namelen;
- U8 *namestr;
- SV** othersvp;
- U32 otherbits;
-
- U8 opc = *x++;
- if (opc == '\n')
- continue;
-
- nextline = (U8*)memchr(x, '\n', xend - x);
-
- if (opc != '-' && opc != '+' && opc != '!' && opc != '&') {
- if (nextline) {
- x = nextline + 1;
- continue;
- }
- else {
- x = xend;
- break;
- }
- }
-
- namestr = x;
-
- if (nextline) {
- namelen = nextline - namestr;
- x = nextline + 1;
- }
- else {
- namelen = xend - namestr;
- x = xend;
- }
-
- if (debug) {
- U8* tmpstr;
- Newx(tmpstr, namelen + 1, U8);
- Move(namestr, tmpstr, namelen, U8);
- tmpstr[namelen] = '\0';
- PerlIO_printf(Perl_error_log,
- "INDIRECT %c %s\n", opc, tmpstr);
- Safefree(tmpstr);
- }
-
- {
- HV* otherhv;
- SV **otherbitssvp;
-
- othersvp = hv_fetch(hv, namestr, namelen, FALSE);
- if (*othersvp && SvROK(*othersvp) &&
- SvTYPE(SvRV(*othersvp))==SVt_PVHV)
- otherhv = (HV*)SvRV(*othersvp);
- else
- Perl_croak(aTHX_ "otherhv is not a hash reference");
-
- otherbitssvp = hv_fetch(otherhv, "BITS", 4, FALSE);
- otherbits = (U32)SvUV(*otherbitssvp);
- if (bits < otherbits)
- Perl_croak(aTHX_ "SWASHGET size mismatch");
- }
-
- {
- dSP;
- ENTER;
- SAVETMPS;
- PUSHMARK(SP);
- EXTEND(SP,3);
- PUSHs(*othersvp);
- PUSHs(sv_2mortal(newSViv(start)));
- PUSHs(sv_2mortal(newSViv(len)));
- PUTBACK;
- if (call_method("SWASHGET", G_SCALAR)) {
- U8 *s, *o;
- STRLEN slen, olen;
- SV* tmpsv = *PL_stack_sp--;
- o = (U8*)SvPV(tmpsv, olen);
-
- if (!olen)
- Perl_croak(aTHX_ "SWASHGET didn't return valid swatch");
- s = SvPV(swatch, slen);
- if (bits == 1 && otherbits == 1) {
- if (slen != olen)
- Perl_croak(aTHX_ "SWASHGET length mismatch");
-
- switch (opc) {
- case '+':
- while (slen--)
- *s++ |= *o++;
- break;
- case '!':
- while (slen--)
- *s++ |= ~*o++;
- break;
- case '-':
- while (slen--)
- *s++ &= ~*o++;
- break;
- case '&':
- while (slen--)
- *s++ &= *o++;
- break;
- default:
- break;
- }
- }
- else {
- U32 otheroctets = otherbits / 8;
- U32 offset = 0;
- U8* send = s + slen;
-
- while (s < send) {
- U32 val = 0;
-
- if (otherbits == 1) {
- val = (o[offset >> 3] >> (offset & 7)) & 1;
- ++offset;
- }
- else {
- U32 vlen = otheroctets;
- val = *o++;
- while (--vlen) {
- val <<= 8;
- val |= *o++;
- }
- }
-
- if (opc == '+' && val)
- val = 1;
- else if (opc == '!' && !val)
- val = 1;
- else if (opc == '-' && val)
- val = 0;
- else if (opc == '&' && !val)
- val = 0;
- else {
- s += octets;
- continue;
- }
-
- if (bits == 8)
- *s++ = (U8)( val & 0xff);
- else if (bits == 16) {
- *s++ = (U8)((val >> 8) & 0xff);
- *s++ = (U8)( val & 0xff);
- }
- else if (bits == 32) {
- *s++ = (U8)((val >> 24) & 0xff);
- *s++ = (U8)((val >> 16) & 0xff);
- *s++ = (U8)((val >> 8) & 0xff);
- *s++ = (U8)( val & 0xff);
- }
- }
- }
- }
- FREETMPS;
- LEAVE;
- }
- }
-
- if (debug) {
- U8* s = (U8*)SvPVX(swatch);
- PerlIO_printf(Perl_error_log, "CELLS ");
- if (bits == 1) {
- U32 key;
- for (key = 0; key < len; key++) {
- int val = (s[key >> 3] >> (key & 7)) & 1;
- PerlIO_printf(Perl_error_log, val ? "1 " : "0 ");
- }
- }
- else {
- U8* send = s + len * octets;
- while (s < send) {
- U32 vlen = octets;
- U32 val = *s++;
- while (--vlen) {
- val <<= 8;
- val |= *s++;
- }
- PerlIO_printf(Perl_error_log, "%"UVuf" ", (UV)val);
- }
- }
- PerlIO_printf(Perl_error_log, "\n");
- }
-
- ST(0) = swatch;
- sv_2mortal(ST(0));
- }
- XSRETURN(1);
+ dVAR;
+ /* Using dXSARGS would also have dITEM and dSP,
+ * which define 2 unused local variables. */
+ dAXMARK;
+ PERL_UNUSED_ARG(cv);
+ PERL_UNUSED_VAR(mark);
+ ++PL_sub_generation;
+ XSRETURN_EMPTY;
}
-
/*
* Local variables:
* c-indentation-style: bsd
https://perl5.git.perl.org / perl5.git / blobdiff