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,
44 PERL_UNUSED_ARG(level);
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"))
59 stash_linear_isa = mro_get_linear_isa(stash);
60 svp = AvARRAY(stash_linear_isa) + 1;
61 items = AvFILLp(stash_linear_isa);
63 SV* const basename_sv = *svp++;
64 HV* basestash = gv_stashsv(basename_sv, 0);
66 if (ckWARN(WARN_MISC))
67 Perl_warner(aTHX_ packWARN(WARN_SYNTAX),
68 "Can't locate package %"SVf" for the parents of %s",
69 SVfARG(basename_sv), hvname);
72 if(name_stash == basestash || strEQ(name, SvPVX(basename_sv)))
80 =head1 SV Manipulation Functions
82 =for apidoc sv_derived_from
84 Returns a boolean indicating whether the SV is derived from the specified class
85 I<at the C level>. To check derivation at the Perl level, call C<isa()> as a
92 Perl_sv_derived_from(pTHX_ SV *sv, const char *name)
102 type = sv_reftype(sv,0);
103 if (type && strEQ(type,name))
105 stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL;
108 stash = gv_stashsv(sv, 0);
112 HV * const name_stash = gv_stashpv(name, 0);
113 return isa_lookup(stash, name, name_stash, strlen(name), 0);
123 Returns a boolean indicating whether the SV performs a specific, named role.
124 The SV can be a Perl object or the name of a Perl class.
132 Perl_sv_does(pTHX_ SV *sv, const char *name)
134 const char *classname;
144 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
145 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
148 if (sv_isobject(sv)) {
149 classname = sv_reftype(SvRV(sv),TRUE);
151 classname = SvPV_nolen(sv);
154 if (strEQ(name,classname))
159 XPUSHs(sv_2mortal(newSVpv(name, 0)));
162 methodname = sv_2mortal(newSVpv("isa", 0));
163 /* ugly hack: use the SvSCREAM flag so S_method_common
164 * can figure out we're calling DOES() and not isa(),
165 * and report eventual errors correctly. --rgs */
166 SvSCREAM_on(methodname);
167 call_sv(methodname, G_SCALAR | G_METHOD);
170 does_it = SvTRUE( TOPs );
178 Perl_get_re_arg( pTHX_ SV *sv, U32 flags, MAGIC **mgp) {
184 (sv = (SV*)SvRV(sv)) && /* assign deliberate */
185 SvTYPE(sv) == SVt_PVMG &&
186 (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */
189 return (regexp *)mg->mg_obj;
192 if (mgp) *mgp = NULL;
193 return ((flags && PL_curpm) ? PM_GETRE(PL_curpm) : NULL);
197 PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv);
198 PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv);
199 PERL_XS_EXPORT_C void XS_UNIVERSAL_DOES(pTHX_ CV *cv);
200 PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv);
202 XS(XS_version_stringify);
203 XS(XS_version_numify);
204 XS(XS_version_normal);
206 XS(XS_version_boolean);
207 #ifdef HASATTRIBUTE_NORETURN
208 XS(XS_version_noop) __attribute__noreturn__;
212 XS(XS_version_is_alpha);
219 XS(XS_utf8_downgrade);
220 XS(XS_utf8_unicode_to_native);
221 XS(XS_utf8_native_to_unicode);
222 XS(XS_Internals_SvREADONLY);
223 XS(XS_Internals_SvREFCNT);
224 XS(XS_Internals_hv_clear_placehold);
225 XS(XS_PerlIO_get_layers);
226 XS(XS_Regexp_DESTROY);
227 XS(XS_Internals_hash_seed);
228 XS(XS_Internals_rehash_seed);
229 XS(XS_Internals_HvREHASH);
230 XS(XS_Internals_inc_sub_generation);
234 XS(XS_re_regnames_iterinit);
235 XS(XS_re_regnames_iternext);
236 XS(XS_re_regnames_count);
239 Perl_boot_core_UNIVERSAL(pTHX)
242 static const char file[] = __FILE__;
244 newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file);
245 newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file);
246 newXS("UNIVERSAL::DOES", XS_UNIVERSAL_DOES, file);
247 newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file);
249 /* register the overloading (type 'A') magic */
250 PL_amagic_generation++;
251 /* Make it findable via fetchmethod */
252 newXS("version::()", XS_version_noop, file);
253 newXS("version::new", XS_version_new, file);
254 newXS("version::(\"\"", XS_version_stringify, file);
255 newXS("version::stringify", XS_version_stringify, file);
256 newXS("version::(0+", XS_version_numify, file);
257 newXS("version::numify", XS_version_numify, file);
258 newXS("version::normal", XS_version_normal, file);
259 newXS("version::(cmp", XS_version_vcmp, file);
260 newXS("version::(<=>", XS_version_vcmp, file);
261 newXS("version::vcmp", XS_version_vcmp, file);
262 newXS("version::(bool", XS_version_boolean, file);
263 newXS("version::boolean", XS_version_boolean, file);
264 newXS("version::(nomethod", XS_version_noop, file);
265 newXS("version::noop", XS_version_noop, file);
266 newXS("version::is_alpha", XS_version_is_alpha, file);
267 newXS("version::qv", XS_version_qv, file);
269 newXS("utf8::is_utf8", XS_utf8_is_utf8, file);
270 newXS("utf8::valid", XS_utf8_valid, file);
271 newXS("utf8::encode", XS_utf8_encode, file);
272 newXS("utf8::decode", XS_utf8_decode, file);
273 newXS("utf8::upgrade", XS_utf8_upgrade, file);
274 newXS("utf8::downgrade", XS_utf8_downgrade, file);
275 newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file);
276 newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file);
277 newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$");
278 newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$");
279 newXSproto("Internals::hv_clear_placeholders",
280 XS_Internals_hv_clear_placehold, file, "\\%");
281 newXSproto("PerlIO::get_layers",
282 XS_PerlIO_get_layers, file, "*;@");
283 newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file);
284 newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, "");
285 newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, "");
286 newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%");
287 newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation,
289 newXSproto("re::is_regexp", XS_re_is_regexp, file, "$");
290 newXSproto("re::regname", XS_re_regname, file, ";$$");
291 newXSproto("re::regnames", XS_re_regnames, file, ";$");
292 newXSproto("re::regnames_iterinit", XS_re_regnames_iterinit, file, "");
293 newXSproto("re::regnames_iternext", XS_re_regnames_iternext, file, ";$");
294 newXSproto("re::regnames_count", XS_re_regnames_count, file, "");
305 Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)");
307 SV * const sv = ST(0);
312 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
313 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
316 name = SvPV_nolen_const(ST(1));
318 ST(0) = boolSV(sv_derived_from(sv, name));
334 Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)");
340 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
341 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
344 name = SvPV_nolen_const(ST(1));
353 pkg = gv_stashsv(sv, 0);
357 GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE);
359 rv = sv_2mortal(newRV((SV*)GvCV(gv)));
366 XS(XS_UNIVERSAL_DOES)
373 Perl_croak(aTHX_ "Usage: invocant->DOES(kind)");
375 SV * const sv = ST(0);
378 name = SvPV_nolen_const(ST(1));
379 if (sv_does( sv, name ))
386 XS(XS_UNIVERSAL_VERSION)
398 sv = (SV*)SvRV(ST(0));
400 Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
404 pkg = gv_stashsv(ST(0), 0);
407 gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
409 if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
410 SV * const nsv = sv_newmortal();
413 if ( !sv_derived_from(sv, "version"))
414 upg_version(sv, FALSE);
418 sv = (SV*)&PL_sv_undef;
427 const char * const name = HvNAME_get(pkg);
429 "%s does not define $%s::VERSION--version check failed",
433 "%s defines neither package nor VERSION--version check failed",
434 SvPVx_nolen_const(ST(0)) );
438 if ( !sv_derived_from(req, "version")) {
439 /* req may very well be R/O, so create a new object */
440 req = sv_2mortal( new_version(req) );
443 if ( vcmp( req, sv ) > 0 ) {
444 if ( hv_exists((HV*)SvRV(req), "qv", 2 ) ) {
445 Perl_croak(aTHX_ "%s version %"SVf" required--"
446 "this is only version %"SVf"", HvNAME_get(pkg),
447 SVfARG(vnormal(req)),
448 SVfARG(vnormal(sv)));
450 Perl_croak(aTHX_ "%s version %"SVf" required--"
451 "this is only version %"SVf"", HvNAME_get(pkg),
452 SVfARG(vnumify(req)),
453 SVfARG(vnumify(sv)));
459 if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
474 Perl_croak(aTHX_ "Usage: version::new(class, version)");
479 const char * const classname =
480 sv_isobject(ST(0)) /* get the class if called as an object method */
481 ? HvNAME(SvSTASH(SvRV(ST(0))))
482 : (char *)SvPV_nolen(ST(0));
484 if ( items == 1 || vs == &PL_sv_undef ) { /* no param or explicit undef */
485 /* create empty object */
489 else if ( items == 3 ) {
491 Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2)));
494 rv = new_version(vs);
495 if ( strcmp(classname,"version") != 0 ) /* inherited new() */
496 sv_bless(rv, gv_stashpv(classname, GV_ADD));
498 PUSHs(sv_2mortal(rv));
504 XS(XS_version_stringify)
510 Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)");
515 if (sv_derived_from(ST(0), "version")) {
519 Perl_croak(aTHX_ "lobj is not of type version");
521 PUSHs(sv_2mortal(vstringify(lobj)));
528 XS(XS_version_numify)
534 Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)");
539 if (sv_derived_from(ST(0), "version")) {
543 Perl_croak(aTHX_ "lobj is not of type version");
545 PUSHs(sv_2mortal(vnumify(lobj)));
552 XS(XS_version_normal)
558 Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)");
563 if (sv_derived_from(ST(0), "version")) {
567 Perl_croak(aTHX_ "lobj is not of type version");
569 PUSHs(sv_2mortal(vnormal(lobj)));
582 Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)");
587 if (sv_derived_from(ST(0), "version")) {
591 Perl_croak(aTHX_ "lobj is not of type version");
597 const IV swap = (IV)SvIV(ST(2));
599 if ( ! sv_derived_from(robj, "version") )
601 robj = new_version(robj);
607 rs = newSViv(vcmp(rvs,lobj));
611 rs = newSViv(vcmp(lobj,rvs));
614 PUSHs(sv_2mortal(rs));
622 XS(XS_version_boolean)
628 Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)");
630 if (sv_derived_from(ST(0), "version")) {
631 SV * const lobj = SvRV(ST(0));
632 SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) );
633 PUSHs(sv_2mortal(rs));
638 Perl_croak(aTHX_ "lobj is not of type version");
647 Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)");
648 if (sv_derived_from(ST(0), "version"))
649 Perl_croak(aTHX_ "operation not supported with version object");
651 Perl_croak(aTHX_ "lobj is not of type version");
652 #ifndef HASATTRIBUTE_NORETURN
657 XS(XS_version_is_alpha)
663 Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)");
665 if (sv_derived_from(ST(0), "version")) {
666 SV * const lobj = ST(0);
667 if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) )
675 Perl_croak(aTHX_ "lobj is not of type version");
684 Perl_croak(aTHX_ "Usage: version::qv(ver)");
688 if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */
689 SV * const rv = sv_newmortal();
690 sv_setsv(rv,ver); /* make a duplicate */
691 upg_version(rv, TRUE);
696 PUSHs(sv_2mortal(new_version(ver)));
710 Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)");
712 const SV * const sv = ST(0);
727 Perl_croak(aTHX_ "Usage: utf8::valid(sv)");
729 SV * const sv = ST(0);
731 const char * const s = SvPV_const(sv,len);
732 if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len))
746 Perl_croak(aTHX_ "Usage: utf8::encode(sv)");
747 sv_utf8_encode(ST(0));
757 Perl_croak(aTHX_ "Usage: utf8::decode(sv)");
759 SV * const sv = ST(0);
760 const bool RETVAL = sv_utf8_decode(sv);
761 ST(0) = boolSV(RETVAL);
773 Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)");
775 SV * const sv = ST(0);
779 RETVAL = sv_utf8_upgrade(sv);
780 XSprePUSH; PUSHi((IV)RETVAL);
785 XS(XS_utf8_downgrade)
790 if (items < 1 || items > 2)
791 Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)");
793 SV * const sv = ST(0);
794 const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1));
795 const bool RETVAL = sv_utf8_downgrade(sv, failok);
797 ST(0) = boolSV(RETVAL);
803 XS(XS_utf8_native_to_unicode)
807 const UV uv = SvUV(ST(0));
811 Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)");
813 ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv)));
817 XS(XS_utf8_unicode_to_native)
821 const UV uv = SvUV(ST(0));
825 Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)");
827 ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv)));
831 XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */
835 SV * const sv = SvRV(ST(0));
844 else if (items == 2) {
850 /* I hope you really know what you are doing. */
855 XSRETURN_UNDEF; /* Can't happen. */
858 XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */
862 SV * const sv = SvRV(ST(0));
866 XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */
867 else if (items == 2) {
868 /* I hope you really know what you are doing. */
869 SvREFCNT(sv) = SvIV(ST(1));
870 XSRETURN_IV(SvREFCNT(sv));
872 XSRETURN_UNDEF; /* Can't happen. */
875 XS(XS_Internals_hv_clear_placehold)
882 Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)");
884 HV * const hv = (HV *) SvRV(ST(0));
885 hv_clear_placeholders(hv);
890 XS(XS_Regexp_DESTROY)
896 XS(XS_PerlIO_get_layers)
901 if (items < 1 || items % 2 == 0)
902 Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])");
909 bool details = FALSE;
913 for (svp = MARK + 2; svp <= SP; svp += 2) {
914 SV * const * const varp = svp;
915 SV * const * const valp = svp + 1;
917 const char * const key = SvPV_const(*varp, klen);
921 if (klen == 5 && memEQ(key, "input", 5)) {
922 input = SvTRUE(*valp);
927 if (klen == 6 && memEQ(key, "output", 6)) {
928 input = !SvTRUE(*valp);
933 if (klen == 7 && memEQ(key, "details", 7)) {
934 details = SvTRUE(*valp);
941 "get_layers: unknown argument '%s'",
953 if (SvROK(sv) && isGV(SvRV(sv)))
956 gv = gv_fetchsv(sv, 0, SVt_PVIO);
959 if (gv && (io = GvIO(gv))) {
961 AV* const av = PerlIO_get_layers(aTHX_ input ?
962 IoIFP(io) : IoOFP(io));
964 const I32 last = av_len(av);
967 for (i = last; i >= 0; i -= 3) {
968 SV * const * const namsvp = av_fetch(av, i - 2, FALSE);
969 SV * const * const argsvp = av_fetch(av, i - 1, FALSE);
970 SV * const * const flgsvp = av_fetch(av, i, FALSE);
972 const bool namok = namsvp && *namsvp && SvPOK(*namsvp);
973 const bool argok = argsvp && *argsvp && SvPOK(*argsvp);
974 const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp);
978 ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp))
981 ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp))
984 XPUSHi(SvIVX(*flgsvp));
986 XPUSHs(&PL_sv_undef);
991 XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")",
995 XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf,
998 XPUSHs(&PL_sv_undef);
1001 const IV flags = SvIVX(*flgsvp);
1003 if (flags & PERLIO_F_UTF8) {
1004 XPUSHs(newSVpvs("utf8"));
1021 XS(XS_Internals_hash_seed)
1024 /* Using dXSARGS would also have dITEM and dSP,
1025 * which define 2 unused local variables. */
1027 PERL_UNUSED_ARG(cv);
1028 PERL_UNUSED_VAR(mark);
1029 XSRETURN_UV(PERL_HASH_SEED);
1032 XS(XS_Internals_rehash_seed)
1035 /* Using dXSARGS would also have dITEM and dSP,
1036 * which define 2 unused local variables. */
1038 PERL_UNUSED_ARG(cv);
1039 PERL_UNUSED_VAR(mark);
1040 XSRETURN_UV(PL_rehash_seed);
1043 XS(XS_Internals_HvREHASH) /* Subject to change */
1047 PERL_UNUSED_ARG(cv);
1049 const HV * const hv = (HV *) SvRV(ST(0));
1050 if (items == 1 && SvTYPE(hv) == SVt_PVHV) {
1057 Perl_croak(aTHX_ "Internals::HvREHASH $hashref");
1060 XS(XS_Internals_inc_sub_generation)
1063 /* Using dXSARGS would also have dITEM and dSP,
1064 * which define 2 unused local variables. */
1066 PERL_UNUSED_ARG(cv);
1067 PERL_UNUSED_VAR(mark);
1068 ++PL_sub_generation;
1077 Perl_croak(aTHX_ "Usage: %s(%s)", "re::is_regexp", "sv");
1078 PERL_UNUSED_VAR(cv); /* -W */
1079 PERL_UNUSED_VAR(ax); /* -Wall */
1083 if ( Perl_get_re_arg( aTHX_ sv, 0, NULL ) )
1100 if (items < 1 || items > 2)
1101 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regname", "name[, all ]");
1102 PERL_UNUSED_VAR(cv); /* -W */
1103 PERL_UNUSED_VAR(ax); /* -Wall */
1108 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1117 if (SvPOK(sv) && re && re->paren_names) {
1118 bufs = CALLREG_NAMEDBUF(re,sv,all && SvTRUE(all));
1120 if (all && SvTRUE(all))
1121 XPUSHs(newRV(bufs));
1123 XPUSHs(SvREFCNT_inc(bufs));
1138 if (items < 0 || items > 1)
1139 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames", "[all]");
1140 PERL_UNUSED_VAR(cv); /* -W */
1141 PERL_UNUSED_VAR(ax); /* -Wall */
1145 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1154 if (re && re->paren_names) {
1155 HV *hv= re->paren_names;
1156 (void)hv_iterinit(hv);
1158 HE *temphe = hv_iternext_flags(hv,0);
1162 SV* sv_dat = HeVAL(temphe);
1163 I32 *nums = (I32*)SvPVX(sv_dat);
1164 for ( i = 0; i < SvIVX(sv_dat); i++ ) {
1165 if ((I32)(re->lastcloseparen) >= nums[i] &&
1166 re->offs[nums[i]].start != -1 &&
1167 re->offs[nums[i]].end != -1)
1173 if (parno || (all && SvTRUE(all))) {
1175 char *pv = HePV(temphe, len);
1176 if ( GIMME_V == G_ARRAY )
1177 XPUSHs(newSVpvn(pv,len));
1185 if ( GIMME_V == G_ARRAY )
1196 XS(XS_re_regnames_iterinit)
1201 Perl_croak(aTHX_ "Usage: re::regnames_iterinit()");
1202 PERL_UNUSED_VAR(cv); /* -W */
1203 PERL_UNUSED_VAR(ax); /* -Wall */
1206 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1207 if (re && re->paren_names) {
1208 (void)hv_iterinit(re->paren_names);
1209 XPUSHs(newSViv(HvTOTALKEYS(re->paren_names)));
1219 XS(XS_re_regnames_iternext)
1223 if (items < 0 || items > 1)
1224 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_iternext", "[all]");
1225 PERL_UNUSED_VAR(cv); /* -W */
1226 PERL_UNUSED_VAR(ax); /* -Wall */
1230 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1237 if (re && re->paren_names) {
1238 HV *hv= re->paren_names;
1240 HE *temphe = hv_iternext_flags(hv,0);
1244 SV* sv_dat = HeVAL(temphe);
1245 I32 *nums = (I32*)SvPVX(sv_dat);
1246 for ( i = 0; i < SvIVX(sv_dat); i++ ) {
1247 if ((I32)(re->lastcloseparen) >= nums[i] &&
1248 re->offs[nums[i]].start != -1 &&
1249 re->offs[nums[i]].end != -1)
1255 if (parno || (all && SvTRUE(all))) {
1257 char *pv = HePV(temphe, len);
1258 XPUSHs(newSVpvn(pv,len));
1273 XS(XS_re_regnames_count)
1275 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1280 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_count", "");
1281 PERL_UNUSED_VAR(cv); /* -W */
1282 PERL_UNUSED_VAR(ax); /* -Wall */
1285 if (re && re->paren_names) {
1286 XPUSHs(newSViv(HvTOTALKEYS(re->paren_names)));
1297 * c-indentation-style: bsd
1299 * indent-tabs-mode: t
1302 * ex: set ts=8 sts=4 sw=4 noet: