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;
196 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
197 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
200 if (sv_isobject(sv)) {
201 classname = sv_reftype(SvRV(sv),TRUE);
203 classname = SvPV_nolen(sv);
206 if (strEQ(name,classname))
211 XPUSHs(sv_2mortal(newSVpv(name, 0)));
214 methodname = sv_2mortal(newSVpv("isa", 0));
215 /* ugly hack: use the SvSCREAM flag so S_method_common
216 * can figure out we're calling DOES() and not isa(),
217 * and report eventual errors correctly. --rgs */
218 SvSCREAM_on(methodname);
219 call_sv(methodname, G_SCALAR | G_METHOD);
222 does_it = SvTRUE( TOPs );
230 Perl_get_re_arg( pTHX_ SV *sv, U32 flags, MAGIC **mgp) {
236 (sv = (SV*)SvRV(sv)) && /* assign deliberate */
237 SvTYPE(sv) == SVt_PVMG &&
238 (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */
241 return (regexp *)mg->mg_obj;
244 if (mgp) *mgp = NULL;
245 return ((flags && PL_curpm) ? PM_GETRE(PL_curpm) : NULL);
249 PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv);
250 PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv);
251 PERL_XS_EXPORT_C void XS_UNIVERSAL_DOES(pTHX_ CV *cv);
252 PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv);
254 XS(XS_version_stringify);
255 XS(XS_version_numify);
256 XS(XS_version_normal);
258 XS(XS_version_boolean);
259 #ifdef HASATTRIBUTE_NORETURN
260 XS(XS_version_noop) __attribute__noreturn__;
264 XS(XS_version_is_alpha);
271 XS(XS_utf8_downgrade);
272 XS(XS_utf8_unicode_to_native);
273 XS(XS_utf8_native_to_unicode);
274 XS(XS_Internals_SvREADONLY);
275 XS(XS_Internals_SvREFCNT);
276 XS(XS_Internals_hv_clear_placehold);
277 XS(XS_PerlIO_get_layers);
278 XS(XS_Regexp_DESTROY);
279 XS(XS_Internals_hash_seed);
280 XS(XS_Internals_rehash_seed);
281 XS(XS_Internals_HvREHASH);
282 XS(XS_Internals_inc_sub_generation);
286 XS(XS_re_regnames_iterinit);
287 XS(XS_re_regnames_iternext);
288 XS(XS_re_regnames_count);
291 Perl_boot_core_UNIVERSAL(pTHX)
294 static const char file[] = __FILE__;
296 newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file);
297 newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file);
298 newXS("UNIVERSAL::DOES", XS_UNIVERSAL_DOES, file);
299 newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file);
301 /* register the overloading (type 'A') magic */
302 PL_amagic_generation++;
303 /* Make it findable via fetchmethod */
304 newXS("version::()", XS_version_noop, file);
305 newXS("version::new", XS_version_new, file);
306 newXS("version::(\"\"", XS_version_stringify, file);
307 newXS("version::stringify", XS_version_stringify, file);
308 newXS("version::(0+", XS_version_numify, file);
309 newXS("version::numify", XS_version_numify, file);
310 newXS("version::normal", XS_version_normal, file);
311 newXS("version::(cmp", XS_version_vcmp, file);
312 newXS("version::(<=>", XS_version_vcmp, file);
313 newXS("version::vcmp", XS_version_vcmp, file);
314 newXS("version::(bool", XS_version_boolean, file);
315 newXS("version::boolean", XS_version_boolean, file);
316 newXS("version::(nomethod", XS_version_noop, file);
317 newXS("version::noop", XS_version_noop, file);
318 newXS("version::is_alpha", XS_version_is_alpha, file);
319 newXS("version::qv", XS_version_qv, file);
321 newXS("utf8::is_utf8", XS_utf8_is_utf8, file);
322 newXS("utf8::valid", XS_utf8_valid, file);
323 newXS("utf8::encode", XS_utf8_encode, file);
324 newXS("utf8::decode", XS_utf8_decode, file);
325 newXS("utf8::upgrade", XS_utf8_upgrade, file);
326 newXS("utf8::downgrade", XS_utf8_downgrade, file);
327 newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file);
328 newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file);
329 newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$");
330 newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$");
331 newXSproto("Internals::hv_clear_placeholders",
332 XS_Internals_hv_clear_placehold, file, "\\%");
333 newXSproto("PerlIO::get_layers",
334 XS_PerlIO_get_layers, file, "*;@");
335 newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file);
336 newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, "");
337 newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, "");
338 newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%");
339 newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation,
341 newXSproto("re::is_regexp", XS_re_is_regexp, file, "$");
342 newXSproto("re::regname", XS_re_regname, file, ";$$");
343 newXSproto("re::regnames", XS_re_regnames, file, ";$");
344 newXSproto("re::regnames_iterinit", XS_re_regnames_iterinit, file, "");
345 newXSproto("re::regnames_iternext", XS_re_regnames_iternext, file, ";$");
346 newXSproto("re::regnames_count", XS_re_regnames_count, file, "");
357 Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)");
359 SV * const sv = ST(0);
364 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
365 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
368 name = SvPV_nolen_const(ST(1));
370 ST(0) = boolSV(sv_derived_from(sv, name));
386 Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)");
392 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
393 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
396 name = SvPV_nolen_const(ST(1));
405 pkg = gv_stashsv(sv, 0);
409 GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE);
411 rv = sv_2mortal(newRV((SV*)GvCV(gv)));
418 XS(XS_UNIVERSAL_DOES)
425 Perl_croak(aTHX_ "Usage: invocant->does(kind)");
427 SV * const sv = ST(0);
430 name = SvPV_nolen_const(ST(1));
431 if (sv_does( sv, name ))
438 XS(XS_UNIVERSAL_VERSION)
450 sv = (SV*)SvRV(ST(0));
452 Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
456 pkg = gv_stashsv(ST(0), 0);
459 gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
461 if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
462 SV * const nsv = sv_newmortal();
465 if ( !sv_derived_from(sv, "version"))
466 upg_version(sv, FALSE);
470 sv = (SV*)&PL_sv_undef;
479 const char * const name = HvNAME_get(pkg);
481 "%s does not define $%s::VERSION--version check failed",
485 "%s defines neither package nor VERSION--version check failed",
486 SvPVx_nolen_const(ST(0)) );
490 if ( !sv_derived_from(req, "version")) {
491 /* req may very well be R/O, so create a new object */
492 req = sv_2mortal( new_version(req) );
495 if ( vcmp( req, sv ) > 0 ) {
496 if ( hv_exists((HV*)SvRV(req), "qv", 2 ) ) {
497 Perl_croak(aTHX_ "%s version %"SVf" required--"
498 "this is only version %"SVf"", HvNAME_get(pkg),
499 SVfARG(vnormal(req)),
500 SVfARG(vnormal(sv)));
502 Perl_croak(aTHX_ "%s version %"SVf" required--"
503 "this is only version %"SVf"", HvNAME_get(pkg),
504 SVfARG(vnumify(req)),
505 SVfARG(vnumify(sv)));
511 if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
526 Perl_croak(aTHX_ "Usage: version::new(class, version)");
531 const char * const classname =
532 sv_isobject(ST(0)) /* get the class if called as an object method */
533 ? HvNAME(SvSTASH(SvRV(ST(0))))
534 : (char *)SvPV_nolen(ST(0));
536 if ( items == 1 || vs == &PL_sv_undef ) { /* no param or explicit undef */
537 /* create empty object */
541 else if ( items == 3 ) {
543 Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2)));
546 rv = new_version(vs);
547 if ( strcmp(classname,"version") != 0 ) /* inherited new() */
548 sv_bless(rv, gv_stashpv(classname, GV_ADD));
550 PUSHs(sv_2mortal(rv));
556 XS(XS_version_stringify)
562 Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)");
567 if (sv_derived_from(ST(0), "version")) {
571 Perl_croak(aTHX_ "lobj is not of type version");
573 PUSHs(sv_2mortal(vstringify(lobj)));
580 XS(XS_version_numify)
586 Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)");
591 if (sv_derived_from(ST(0), "version")) {
595 Perl_croak(aTHX_ "lobj is not of type version");
597 PUSHs(sv_2mortal(vnumify(lobj)));
604 XS(XS_version_normal)
610 Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)");
615 if (sv_derived_from(ST(0), "version")) {
619 Perl_croak(aTHX_ "lobj is not of type version");
621 PUSHs(sv_2mortal(vnormal(lobj)));
634 Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)");
639 if (sv_derived_from(ST(0), "version")) {
643 Perl_croak(aTHX_ "lobj is not of type version");
649 const IV swap = (IV)SvIV(ST(2));
651 if ( ! sv_derived_from(robj, "version") )
653 robj = new_version(robj);
659 rs = newSViv(vcmp(rvs,lobj));
663 rs = newSViv(vcmp(lobj,rvs));
666 PUSHs(sv_2mortal(rs));
674 XS(XS_version_boolean)
680 Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)");
682 if (sv_derived_from(ST(0), "version")) {
683 SV * const lobj = SvRV(ST(0));
684 SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) );
685 PUSHs(sv_2mortal(rs));
690 Perl_croak(aTHX_ "lobj is not of type version");
699 Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)");
700 if (sv_derived_from(ST(0), "version"))
701 Perl_croak(aTHX_ "operation not supported with version object");
703 Perl_croak(aTHX_ "lobj is not of type version");
704 #ifndef HASATTRIBUTE_NORETURN
709 XS(XS_version_is_alpha)
715 Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)");
717 if (sv_derived_from(ST(0), "version")) {
718 SV * const lobj = ST(0);
719 if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) )
727 Perl_croak(aTHX_ "lobj is not of type version");
736 Perl_croak(aTHX_ "Usage: version::qv(ver)");
740 if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */
741 SV * const rv = sv_newmortal();
742 sv_setsv(rv,ver); /* make a duplicate */
743 upg_version(rv, TRUE);
748 PUSHs(sv_2mortal(new_version(ver)));
762 Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)");
764 const SV * const sv = ST(0);
779 Perl_croak(aTHX_ "Usage: utf8::valid(sv)");
781 SV * const sv = ST(0);
783 const char * const s = SvPV_const(sv,len);
784 if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len))
798 Perl_croak(aTHX_ "Usage: utf8::encode(sv)");
799 sv_utf8_encode(ST(0));
809 Perl_croak(aTHX_ "Usage: utf8::decode(sv)");
811 SV * const sv = ST(0);
812 const bool RETVAL = sv_utf8_decode(sv);
813 ST(0) = boolSV(RETVAL);
825 Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)");
827 SV * const sv = ST(0);
831 RETVAL = sv_utf8_upgrade(sv);
832 XSprePUSH; PUSHi((IV)RETVAL);
837 XS(XS_utf8_downgrade)
842 if (items < 1 || items > 2)
843 Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)");
845 SV * const sv = ST(0);
846 const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1));
847 const bool RETVAL = sv_utf8_downgrade(sv, failok);
849 ST(0) = boolSV(RETVAL);
855 XS(XS_utf8_native_to_unicode)
859 const UV uv = SvUV(ST(0));
863 Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)");
865 ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv)));
869 XS(XS_utf8_unicode_to_native)
873 const UV uv = SvUV(ST(0));
877 Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)");
879 ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv)));
883 XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */
887 SV * const sv = SvRV(ST(0));
896 else if (items == 2) {
902 /* I hope you really know what you are doing. */
907 XSRETURN_UNDEF; /* Can't happen. */
910 XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */
914 SV * const sv = SvRV(ST(0));
918 XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */
919 else if (items == 2) {
920 /* I hope you really know what you are doing. */
921 SvREFCNT(sv) = SvIV(ST(1));
922 XSRETURN_IV(SvREFCNT(sv));
924 XSRETURN_UNDEF; /* Can't happen. */
927 XS(XS_Internals_hv_clear_placehold)
934 Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)");
936 HV * const hv = (HV *) SvRV(ST(0));
937 hv_clear_placeholders(hv);
942 XS(XS_Regexp_DESTROY)
948 XS(XS_PerlIO_get_layers)
953 if (items < 1 || items % 2 == 0)
954 Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])");
961 bool details = FALSE;
965 for (svp = MARK + 2; svp <= SP; svp += 2) {
966 SV * const * const varp = svp;
967 SV * const * const valp = svp + 1;
969 const char * const key = SvPV_const(*varp, klen);
973 if (klen == 5 && memEQ(key, "input", 5)) {
974 input = SvTRUE(*valp);
979 if (klen == 6 && memEQ(key, "output", 6)) {
980 input = !SvTRUE(*valp);
985 if (klen == 7 && memEQ(key, "details", 7)) {
986 details = SvTRUE(*valp);
993 "get_layers: unknown argument '%s'",
1005 if (SvROK(sv) && isGV(SvRV(sv)))
1007 else if (SvPOKp(sv))
1008 gv = gv_fetchsv(sv, 0, SVt_PVIO);
1011 if (gv && (io = GvIO(gv))) {
1013 AV* const av = PerlIO_get_layers(aTHX_ input ?
1014 IoIFP(io) : IoOFP(io));
1016 const I32 last = av_len(av);
1019 for (i = last; i >= 0; i -= 3) {
1020 SV * const * const namsvp = av_fetch(av, i - 2, FALSE);
1021 SV * const * const argsvp = av_fetch(av, i - 1, FALSE);
1022 SV * const * const flgsvp = av_fetch(av, i, FALSE);
1024 const bool namok = namsvp && *namsvp && SvPOK(*namsvp);
1025 const bool argok = argsvp && *argsvp && SvPOK(*argsvp);
1026 const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp);
1030 ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp))
1033 ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp))
1036 XPUSHi(SvIVX(*flgsvp));
1038 XPUSHs(&PL_sv_undef);
1043 XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")",
1047 XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf,
1050 XPUSHs(&PL_sv_undef);
1053 const IV flags = SvIVX(*flgsvp);
1055 if (flags & PERLIO_F_UTF8) {
1056 XPUSHs(newSVpvs("utf8"));
1073 XS(XS_Internals_hash_seed)
1076 /* Using dXSARGS would also have dITEM and dSP,
1077 * which define 2 unused local variables. */
1079 PERL_UNUSED_ARG(cv);
1080 PERL_UNUSED_VAR(mark);
1081 XSRETURN_UV(PERL_HASH_SEED);
1084 XS(XS_Internals_rehash_seed)
1087 /* Using dXSARGS would also have dITEM and dSP,
1088 * which define 2 unused local variables. */
1090 PERL_UNUSED_ARG(cv);
1091 PERL_UNUSED_VAR(mark);
1092 XSRETURN_UV(PL_rehash_seed);
1095 XS(XS_Internals_HvREHASH) /* Subject to change */
1099 PERL_UNUSED_ARG(cv);
1101 const HV * const hv = (HV *) SvRV(ST(0));
1102 if (items == 1 && SvTYPE(hv) == SVt_PVHV) {
1109 Perl_croak(aTHX_ "Internals::HvREHASH $hashref");
1112 XS(XS_Internals_inc_sub_generation)
1115 /* Using dXSARGS would also have dITEM and dSP,
1116 * which define 2 unused local variables. */
1118 PERL_UNUSED_ARG(cv);
1119 PERL_UNUSED_VAR(mark);
1120 ++PL_sub_generation;
1129 Perl_croak(aTHX_ "Usage: %s(%s)", "re::is_regexp", "sv");
1130 PERL_UNUSED_VAR(cv); /* -W */
1131 PERL_UNUSED_VAR(ax); /* -Wall */
1135 if ( Perl_get_re_arg( aTHX_ sv, 0, NULL ) )
1152 if (items < 1 || items > 2)
1153 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regname", "name[, all ]");
1154 PERL_UNUSED_VAR(cv); /* -W */
1155 PERL_UNUSED_VAR(ax); /* -Wall */
1160 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1169 if (SvPOK(sv) && re && re->paren_names) {
1170 bufs = CALLREG_NAMEDBUF(re,sv,all && SvTRUE(all));
1172 if (all && SvTRUE(all))
1173 XPUSHs(newRV(bufs));
1175 XPUSHs(SvREFCNT_inc(bufs));
1190 if (items < 0 || items > 1)
1191 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames", "[all]");
1192 PERL_UNUSED_VAR(cv); /* -W */
1193 PERL_UNUSED_VAR(ax); /* -Wall */
1197 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1206 if (re && re->paren_names) {
1207 HV *hv= re->paren_names;
1208 (void)hv_iterinit(hv);
1210 HE *temphe = hv_iternext_flags(hv,0);
1214 SV* sv_dat = HeVAL(temphe);
1215 I32 *nums = (I32*)SvPVX(sv_dat);
1216 for ( i = 0; i < SvIVX(sv_dat); i++ ) {
1217 if ((I32)(re->lastcloseparen) >= nums[i] &&
1218 re->offs[nums[i]].start != -1 &&
1219 re->offs[nums[i]].end != -1)
1225 if (parno || (all && SvTRUE(all))) {
1227 char *pv = HePV(temphe, len);
1228 if ( GIMME_V == G_ARRAY )
1229 XPUSHs(newSVpvn(pv,len));
1237 if ( GIMME_V == G_ARRAY )
1248 XS(XS_re_regnames_iterinit)
1253 Perl_croak(aTHX_ "Usage: re::regnames_iterinit()");
1254 PERL_UNUSED_VAR(cv); /* -W */
1255 PERL_UNUSED_VAR(ax); /* -Wall */
1258 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1259 if (re && re->paren_names) {
1260 (void)hv_iterinit(re->paren_names);
1261 XPUSHs(newSViv(HvTOTALKEYS(re->paren_names)));
1271 XS(XS_re_regnames_iternext)
1275 if (items < 0 || items > 1)
1276 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_iternext", "[all]");
1277 PERL_UNUSED_VAR(cv); /* -W */
1278 PERL_UNUSED_VAR(ax); /* -Wall */
1282 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1289 if (re && re->paren_names) {
1290 HV *hv= re->paren_names;
1292 HE *temphe = hv_iternext_flags(hv,0);
1296 SV* sv_dat = HeVAL(temphe);
1297 I32 *nums = (I32*)SvPVX(sv_dat);
1298 for ( i = 0; i < SvIVX(sv_dat); i++ ) {
1299 if ((I32)(re->lastcloseparen) >= nums[i] &&
1300 re->offs[nums[i]].start != -1 &&
1301 re->offs[nums[i]].end != -1)
1307 if (parno || (all && SvTRUE(all))) {
1309 char *pv = HePV(temphe, len);
1310 XPUSHs(newSVpvn(pv,len));
1325 XS(XS_re_regnames_count)
1327 regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1332 Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_count", "");
1333 PERL_UNUSED_VAR(cv); /* -W */
1334 PERL_UNUSED_VAR(ax); /* -Wall */
1337 if (re && re->paren_names) {
1338 XPUSHs(newSViv(HvTOTALKEYS(re->paren_names)));
1349 * c-indentation-style: bsd
1351 * indent-tabs-mode: t
1354 * ex: set ts=8 sts=4 sw=4 noet: