3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 * 2005, 2006, 2007 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "The roots of those mountains must be roots indeed; there must be
13 * great secrets buried there which have not been discovered since the
14 * beginning." --Gandalf, relating Gollum's story
17 /* This file contains the code that implements the functions in Perl's
18 * UNIVERSAL package, such as UNIVERSAL->can().
22 #define PERL_IN_UNIVERSAL_C
26 #include "perliol.h" /* For the PERLIO_F_XXX */
30 * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com>
31 * The main guts of traverse_isa was actually copied from gv_fetchmeth
35 S_isa_lookup(pTHX_ HV *stash, const char *name, const HV* const name_stash,
46 /* A stash/class can go by many names (ie. User == main::User), so
47 we compare the stash itself just in case */
48 if (name_stash && ((const HV *)stash == name_stash))
51 hvname = HvNAME_get(stash);
53 if (strEQ(hvname, name))
56 if (strEQ(name, "UNIVERSAL"))
60 Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'",
63 gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", FALSE);
65 if (gvp && (gv = *gvp) && isGV_with_GP(gv) && (subgen = GvSV(gv))
68 if (SvIV(subgen) == (IV)PL_sub_generation) {
69 SV** const svp = (SV**)hv_fetch(hv, name, len, FALSE);
73 if (sv != &PL_sv_undef)
74 DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n",
77 return (sv == &PL_sv_yes);
81 DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n",
84 sv_setiv(subgen, PL_sub_generation);
88 gvp = (GV**)hv_fetchs(stash, "ISA", FALSE);
90 if (gvp && (gv = *gvp) && isGV_with_GP(gv) && (av = GvAV(gv))) {
92 gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", TRUE);
96 if (SvTYPE(gv) != SVt_PVGV)
97 gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE);
102 subgen = newSViv(PL_sub_generation);
107 SV** svp = AvARRAY(av);
108 /* NOTE: No support for tied ISA */
109 I32 items = AvFILLp(av) + 1;
111 SV* const sv = *svp++;
112 HV* const basestash = gv_stashsv(sv, 0);
114 if (ckWARN(WARN_MISC))
115 Perl_warner(aTHX_ packWARN(WARN_SYNTAX),
116 "Can't locate package %"SVf" for @%s::ISA",
120 if (isa_lookup(basestash, name, name_stash, len, level + 1)) {
121 (void)hv_store(hv,name,len,&PL_sv_yes,0);
125 (void)hv_store(hv,name,len,&PL_sv_no,0);
132 =head1 SV Manipulation Functions
134 =for apidoc sv_derived_from
136 Returns a boolean indicating whether the SV is derived from the specified class
137 I<at the C level>. To check derivation at the Perl level, call C<isa()> as a
144 Perl_sv_derived_from(pTHX_ SV *sv, const char *name)
154 type = sv_reftype(sv,0);
155 if (type && strEQ(type,name))
157 stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL;
160 stash = gv_stashsv(sv, 0);
164 HV * const name_stash = gv_stashpv(name, 0);
165 return isa_lookup(stash, name, name_stash, strlen(name), 0);
175 Returns a boolean indicating whether the SV performs a specific, named role.
176 The SV can be a Perl object or the name of a Perl class.
184 Perl_sv_does(pTHX_ SV *sv, const char *name)
186 const char *classname;
195 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
196 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
199 if (sv_isobject(sv)) {
200 classname = sv_reftype(SvRV(sv),TRUE);
202 classname = SvPV(sv,PL_na);
205 if (strEQ(name,classname))
210 XPUSHs(sv_2mortal(newSVpv(name, 0)));
213 call_method("isa", G_SCALAR);
216 does_it = SvTRUE( TOPs );
224 Perl_get_re_arg( pTHX_ SV *sv, U32 flags, MAGIC **mgp) {
230 (sv = (SV*)SvRV(sv)) && /* assign deliberate */
231 SvTYPE(sv) == SVt_PVMG &&
232 (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */
235 return (regexp *)mg->mg_obj;
238 if (mgp) *mgp = NULL;
239 return ((flags && PL_curpm) ? PM_GETRE(PL_curpm) : NULL);
243 PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv);
244 PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv);
245 PERL_XS_EXPORT_C void XS_UNIVERSAL_DOES(pTHX_ CV *cv);
246 PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv);
248 XS(XS_version_stringify);
249 XS(XS_version_numify);
250 XS(XS_version_normal);
252 XS(XS_version_boolean);
253 #ifdef HASATTRIBUTE_NORETURN
254 XS(XS_version_noop) __attribute__noreturn__;
258 XS(XS_version_is_alpha);
265 XS(XS_utf8_downgrade);
266 XS(XS_utf8_unicode_to_native);
267 XS(XS_utf8_native_to_unicode);
268 XS(XS_Internals_SvREADONLY);
269 XS(XS_Internals_SvREFCNT);
270 XS(XS_Internals_hv_clear_placehold);
271 XS(XS_PerlIO_get_layers);
272 XS(XS_Regexp_DESTROY);
273 XS(XS_Internals_hash_seed);
274 XS(XS_Internals_rehash_seed);
275 XS(XS_Internals_HvREHASH);
276 XS(XS_Internals_inc_sub_generation);
280 XS(XS_re_regnames_iterinit);
281 XS(XS_re_regnames_iternext);
282 XS(XS_re_regnames_count);
285 Perl_boot_core_UNIVERSAL(pTHX)
288 static const char file[] = __FILE__;
290 newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file);
291 newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file);
292 newXS("UNIVERSAL::DOES", XS_UNIVERSAL_DOES, file);
293 newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file);
295 /* register the overloading (type 'A') magic */
296 PL_amagic_generation++;
297 /* Make it findable via fetchmethod */
298 newXS("version::()", XS_version_noop, file);
299 newXS("version::new", XS_version_new, file);
300 newXS("version::(\"\"", XS_version_stringify, file);
301 newXS("version::stringify", XS_version_stringify, file);
302 newXS("version::(0+", XS_version_numify, file);
303 newXS("version::numify", XS_version_numify, file);
304 newXS("version::normal", XS_version_normal, file);
305 newXS("version::(cmp", XS_version_vcmp, file);
306 newXS("version::(<=>", XS_version_vcmp, file);
307 newXS("version::vcmp", XS_version_vcmp, file);
308 newXS("version::(bool", XS_version_boolean, file);
309 newXS("version::boolean", XS_version_boolean, file);
310 newXS("version::(nomethod", XS_version_noop, file);
311 newXS("version::noop", XS_version_noop, file);
312 newXS("version::is_alpha", XS_version_is_alpha, file);
313 newXS("version::qv", XS_version_qv, file);
315 newXS("utf8::is_utf8", XS_utf8_is_utf8, file);
316 newXS("utf8::valid", XS_utf8_valid, file);
317 newXS("utf8::encode", XS_utf8_encode, file);
318 newXS("utf8::decode", XS_utf8_decode, file);
319 newXS("utf8::upgrade", XS_utf8_upgrade, file);
320 newXS("utf8::downgrade", XS_utf8_downgrade, file);
321 newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file);
322 newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file);
323 newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$");
324 newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$");
325 newXSproto("Internals::hv_clear_placeholders",
326 XS_Internals_hv_clear_placehold, file, "\\%");
327 newXSproto("PerlIO::get_layers",
328 XS_PerlIO_get_layers, file, "*;@");
329 newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file);
330 newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, "");
331 newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, "");
332 newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%");
333 newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation,
335 newXSproto("re::is_regexp", XS_re_is_regexp, file, "$");
336 newXSproto("re::regname", XS_re_regname, file, ";$$$");
337 newXSproto("re::regnames", XS_re_regnames, file, ";$$");
338 newXSproto("re::regnames_iterinit", XS_re_regnames_iterinit, file, ";$");
339 newXSproto("re::regnames_iternext", XS_re_regnames_iternext, file, ";$$");
340 newXSproto("re::regnames_count", XS_re_regnames_count, file, ";$");
351 Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)");
353 SV * const sv = ST(0);
358 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
359 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
362 name = SvPV_nolen_const(ST(1));
364 ST(0) = boolSV(sv_derived_from(sv, name));
380 Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)");
386 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
387 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
390 name = SvPV_nolen_const(ST(1));
399 pkg = gv_stashsv(sv, 0);
403 GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE);
405 rv = sv_2mortal(newRV((SV*)GvCV(gv)));
412 XS(XS_UNIVERSAL_DOES)
419 Perl_croak(aTHX_ "Usage: invocant->does(kind)");
421 SV * const sv = ST(0);
424 name = SvPV_nolen_const(ST(1));
425 if (sv_does( sv, name ))
432 XS(XS_UNIVERSAL_VERSION)
444 sv = (SV*)SvRV(ST(0));
446 Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
450 pkg = gv_stashsv(ST(0), 0);
453 gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
455 if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
456 SV * const nsv = sv_newmortal();
459 if ( !sv_derived_from(sv, "version"))
464 sv = (SV*)&PL_sv_undef;
473 const char * const name = HvNAME_get(pkg);
475 "%s does not define $%s::VERSION--version check failed",
479 "%s defines neither package nor VERSION--version check failed",
480 SvPVx_nolen_const(ST(0)) );
484 if ( !sv_derived_from(req, "version")) {
485 /* req may very well be R/O, so create a new object */
486 SV * const nsv = sv_newmortal();
492 if ( vcmp( req, sv ) > 0 )
493 Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--"
494 "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg),
495 SVfARG(vnumify(req)),
496 SVfARG(vnormal(req)),
498 SVfARG(vnormal(sv)));
501 if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
516 Perl_croak(aTHX_ "Usage: version::new(class, version)");
521 const char * const classname =
522 sv_isobject(ST(0)) /* get the class if called as an object method */
523 ? HvNAME(SvSTASH(SvRV(ST(0))))
524 : (char *)SvPV_nolen(ST(0));
526 if ( items == 1 || vs == &PL_sv_undef ) { /* no param or explicit undef */
527 /* create empty object */
531 else if ( items == 3 ) {
533 Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2)));
536 rv = new_version(vs);
537 if ( strcmp(classname,"version") != 0 ) /* inherited new() */
538 sv_bless(rv, gv_stashpv(classname, GV_ADD));
540 PUSHs(sv_2mortal(rv));
546 XS(XS_version_stringify)
552 Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)");
557 if (sv_derived_from(ST(0), "version")) {
561 Perl_croak(aTHX_ "lobj is not of type version");
563 PUSHs(sv_2mortal(vstringify(lobj)));
570 XS(XS_version_numify)
576 Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)");
581 if (sv_derived_from(ST(0), "version")) {
585 Perl_croak(aTHX_ "lobj is not of type version");
587 PUSHs(sv_2mortal(vnumify(lobj)));
594 XS(XS_version_normal)
600 Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)");
605 if (sv_derived_from(ST(0), "version")) {
609 Perl_croak(aTHX_ "lobj is not of type version");
611 PUSHs(sv_2mortal(vnormal(lobj)));
624 Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)");
629 if (sv_derived_from(ST(0), "version")) {
633 Perl_croak(aTHX_ "lobj is not of type version");
639 const IV swap = (IV)SvIV(ST(2));
641 if ( ! sv_derived_from(robj, "version") )
643 robj = new_version(robj);
649 rs = newSViv(vcmp(rvs,lobj));
653 rs = newSViv(vcmp(lobj,rvs));
656 PUSHs(sv_2mortal(rs));
664 XS(XS_version_boolean)
670 Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)");
672 if (sv_derived_from(ST(0), "version")) {
673 SV * const lobj = SvRV(ST(0));
674 SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) );
675 PUSHs(sv_2mortal(rs));
680 Perl_croak(aTHX_ "lobj is not of type version");
689 Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)");
690 if (sv_derived_from(ST(0), "version"))
691 Perl_croak(aTHX_ "operation not supported with version object");
693 Perl_croak(aTHX_ "lobj is not of type version");
694 #ifndef HASATTRIBUTE_NORETURN
699 XS(XS_version_is_alpha)
705 Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)");
707 if (sv_derived_from(ST(0), "version")) {
708 SV * const lobj = ST(0);
709 if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) )
717 Perl_croak(aTHX_ "lobj is not of type version");
726 Perl_croak(aTHX_ "Usage: version::qv(ver)");
730 if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */
731 SV * const vs = sv_newmortal();
733 if ( SvNOK(ver) ) /* may get too much accuracy */
736 #ifdef USE_LOCALE_NUMERIC
737 char *loc = setlocale(LC_NUMERIC, "C");
739 STRLEN len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVgf, SvNVX(ver));
740 #ifdef USE_LOCALE_NUMERIC
741 setlocale(LC_NUMERIC, loc);
743 while (tbuf[len-1] == '0' && len > 0) len--;
744 version = savepvn(tbuf, len);
748 version = savesvpv(ver);
750 (void)scan_version(version,vs,TRUE);
757 PUSHs(sv_2mortal(new_version(ver)));
771 Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)");
773 const SV * const sv = ST(0);
788 Perl_croak(aTHX_ "Usage: utf8::valid(sv)");
790 SV * const sv = ST(0);
792 const char * const s = SvPV_const(sv,len);
793 if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len))
807 Perl_croak(aTHX_ "Usage: utf8::encode(sv)");
808 sv_utf8_encode(ST(0));
818 Perl_croak(aTHX_ "Usage: utf8::decode(sv)");
820 SV * const sv = ST(0);
821 const bool RETVAL = sv_utf8_decode(sv);
822 ST(0) = boolSV(RETVAL);
834 Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)");
836 SV * const sv = ST(0);
840 RETVAL = sv_utf8_upgrade(sv);
841 XSprePUSH; PUSHi((IV)RETVAL);
846 XS(XS_utf8_downgrade)
851 if (items < 1 || items > 2)
852 Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)");
854 SV * const sv = ST(0);
855 const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1));
856 const bool RETVAL = sv_utf8_downgrade(sv, failok);
858 ST(0) = boolSV(RETVAL);
864 XS(XS_utf8_native_to_unicode)
868 const UV uv = SvUV(ST(0));
872 Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)");
874 ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv)));
878 XS(XS_utf8_unicode_to_native)
882 const UV uv = SvUV(ST(0));
886 Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)");
888 ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv)));
892 XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */
896 SV * const sv = SvRV(ST(0));
905 else if (items == 2) {
911 /* I hope you really know what you are doing. */
916 XSRETURN_UNDEF; /* Can't happen. */
919 XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */
923 SV * const sv = SvRV(ST(0));
927 XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */
928 else if (items == 2) {
929 /* I hope you really know what you are doing. */
930 SvREFCNT(sv) = SvIV(ST(1));
931 XSRETURN_IV(SvREFCNT(sv));
933 XSRETURN_UNDEF; /* Can't happen. */
936 XS(XS_Internals_hv_clear_placehold)
943 Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)");
945 HV * const hv = (HV *) SvRV(ST(0));
946 hv_clear_placeholders(hv);
951 XS(XS_Regexp_DESTROY)
957 XS(XS_PerlIO_get_layers)
962 if (items < 1 || items % 2 == 0)
963 Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])");
970 bool details = FALSE;
974 for (svp = MARK + 2; svp <= SP; svp += 2) {
975 SV * const * const varp = svp;
976 SV * const * const valp = svp + 1;
978 const char * const key = SvPV_const(*varp, klen);
982 if (klen == 5 && memEQ(key, "input", 5)) {
983 input = SvTRUE(*valp);
988 if (klen == 6 && memEQ(key, "output", 6)) {
989 input = !SvTRUE(*valp);
994 if (klen == 7 && memEQ(key, "details", 7)) {
995 details = SvTRUE(*valp);
1002 "get_layers: unknown argument '%s'",
1014 if (SvROK(sv) && isGV(SvRV(sv)))
1016 else if (SvPOKp(sv))
1017 gv = gv_fetchsv(sv, 0, SVt_PVIO);
1020 if (gv && (io = GvIO(gv))) {
1022 AV* const av = PerlIO_get_layers(aTHX_ input ?
1023 IoIFP(io) : IoOFP(io));
1025 const I32 last = av_len(av);
1028 for (i = last; i >= 0; i -= 3) {
1029 SV * const * const namsvp = av_fetch(av, i - 2, FALSE);
1030 SV * const * const argsvp = av_fetch(av, i - 1, FALSE);
1031 SV * const * const flgsvp = av_fetch(av, i, FALSE);
1033 const bool namok = namsvp && *namsvp && SvPOK(*namsvp);
1034 const bool argok = argsvp && *argsvp && SvPOK(*argsvp);
1035 const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp);
1039 ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp))
1042 ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp))
1045 XPUSHi(SvIVX(*flgsvp));
1047 XPUSHs(&PL_sv_undef);
1052 XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")",
1056 XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf,
1059 XPUSHs(&PL_sv_undef);
1062 const IV flags = SvIVX(*flgsvp);
1064 if (flags & PERLIO_F_UTF8) {
1065 XPUSHs(newSVpvs("utf8"));
1082 XS(XS_Internals_hash_seed)
1085 /* Using dXSARGS would also have dITEM and dSP,
1086 * which define 2 unused local variables. */
1088 PERL_UNUSED_ARG(cv);
1089 PERL_UNUSED_VAR(mark);
1090 XSRETURN_UV(PERL_HASH_SEED);
1093 XS(XS_Internals_rehash_seed)
1096 /* Using dXSARGS would also have dITEM and dSP,
1097 * which define 2 unused local variables. */
1099 PERL_UNUSED_ARG(cv);
1100 PERL_UNUSED_VAR(mark);
1101 XSRETURN_UV(PL_rehash_seed);
1104 XS(XS_Internals_HvREHASH) /* Subject to change */
1108 PERL_UNUSED_ARG(cv);
1110 const HV * const hv = (HV *) SvRV(ST(0));
1111 if (items == 1 && SvTYPE(hv) == SVt_PVHV) {
1118 Perl_croak(aTHX_ "Internals::HvREHASH $hashref");
1121 XS(XS_Internals_inc_sub_generation)
1124 /* Using dXSARGS would also have dITEM and dSP,
1125 * which define 2 unused local variables. */
1127 PERL_UNUSED_ARG(cv);
1128 PERL_UNUSED_VAR(mark);
1129 ++PL_sub_generation;
1138 Perl_croak(aTHX_ "Usage: %s(%s)", "re::is_regexp", "sv");
1139 PERL_UNUSED_VAR(cv); /* -W */
1140 PERL_UNUSED_VAR(ax); /* -Wall */
1144 if ( Perl_get_re_arg( aTHX_ sv, 0, NULL ) )
1161 if (items < 1 || items > 3)
1162 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regname", "sv, qr = NULL, all = NULL");
1163 PERL_UNUSED_VAR(cv); /* -W */
1164 PERL_UNUSED_VAR(ax); /* -Wall */
1185 re = Perl_get_re_arg( aTHX_ qr, 1, NULL);
1186 if (SvPOK(sv) && re && re->paren_names) {
1187 bufs = CALLREG_NAMEDBUF(re,sv,all && SvTRUE(all));
1189 if (all && SvTRUE(all))
1190 XPUSHs(newRV(bufs));
1192 XPUSHs(SvREFCNT_inc(bufs));
1207 if (items < 0 || items > 2)
1208 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames", "sv = NULL, all = NULL");
1209 PERL_UNUSED_VAR(cv); /* -W */
1210 PERL_UNUSED_VAR(ax); /* -Wall */
1230 re = Perl_get_re_arg( aTHX_ sv, 1, NULL );
1231 if (re && re->paren_names) {
1232 HV *hv= re->paren_names;
1233 (void)hv_iterinit(hv);
1235 HE *temphe = hv_iternext_flags(hv,0);
1239 SV* sv_dat = HeVAL(temphe);
1240 I32 *nums = (I32*)SvPVX(sv_dat);
1241 for ( i = 0; i < SvIVX(sv_dat); i++ ) {
1242 if ((I32)(re->lastcloseparen) >= nums[i] &&
1243 re->startp[nums[i]] != -1 &&
1244 re->endp[nums[i]] != -1)
1250 if (parno || (all && SvTRUE(all))) {
1252 char *pv = HePV(temphe, len);
1253 if ( GIMME_V == G_ARRAY )
1254 XPUSHs(newSVpvn(pv,len));
1262 if ( GIMME_V == G_ARRAY )
1273 XS(XS_re_regnames_iterinit)
1277 if (items < 0 || items > 1)
1278 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_iterinit", "sv = NULL");
1279 PERL_UNUSED_VAR(cv); /* -W */
1280 PERL_UNUSED_VAR(ax); /* -Wall */
1292 re = Perl_get_re_arg( aTHX_ sv, 1, NULL );
1293 if (re && re->paren_names) {
1294 (void)hv_iterinit(re->paren_names);
1295 XPUSHs(newSViv(HvTOTALKEYS(re->paren_names)));
1306 XS(XS_re_regnames_iternext)
1310 if (items < 0 || items > 2)
1311 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_iternext", "sv = NULL, all = NULL");
1312 PERL_UNUSED_VAR(cv); /* -W */
1313 PERL_UNUSED_VAR(ax); /* -Wall */
1332 re = Perl_get_re_arg( aTHX_ sv, 1, NULL );
1333 if (re && re->paren_names) {
1334 HV *hv= re->paren_names;
1336 HE *temphe = hv_iternext_flags(hv,0);
1340 SV* sv_dat = HeVAL(temphe);
1341 I32 *nums = (I32*)SvPVX(sv_dat);
1342 for ( i = 0; i < SvIVX(sv_dat); i++ ) {
1343 if ((I32)(re->lastcloseparen) >= nums[i] &&
1344 re->startp[nums[i]] != -1 &&
1345 re->endp[nums[i]] != -1)
1351 if (parno || (all && SvTRUE(all))) {
1353 char *pv = HePV(temphe, len);
1354 XPUSHs(newSVpvn(pv,len));
1370 XS(XS_re_regnames_count)
1377 if (items < 0 || items > 1)
1378 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_count", "sv = NULL");
1379 PERL_UNUSED_VAR(cv); /* -W */
1380 PERL_UNUSED_VAR(ax); /* -Wall */
1387 re = Perl_get_re_arg( aTHX_ sv, 1, NULL );
1388 if (re && re->paren_names) {
1389 XPUSHs(newSViv(HvTOTALKEYS(re->paren_names)));
1400 * c-indentation-style: bsd
1402 * indent-tabs-mode: t
1405 * ex: set ts=8 sts=4 sw=4 noet: