X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/c445ea15829fa1ef23c4453a817f9c096a56a192..810e611394e65af2f8be3aaa197ca7d2ca61e563:/universal.c diff --git a/universal.c b/universal.c index 097cc64..396dd3d 100644 --- a/universal.c +++ b/universal.c @@ -1,7 +1,7 @@ /* universal.c * * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, - * 2005, by Larry Wall and others + * 2005, 2006, 2007 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. @@ -31,98 +31,46 @@ * 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, - int len, int level) +STATIC bool +S_isa_lookup(pTHX_ HV *stash, const char * const name, const HV* const name_stash) { - AV* av; - GV* gv; - GV** gvp; - HV* hv = NULL; - SV* subgen = NULL; + dVAR; + AV* stash_linear_isa; + SV** svp; const char *hvname; + I32 items; /* 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; - - if (level > 100) - Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", - hvname); - - gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, 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; - } - } - else { - DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", - hvname) ); - hv_clear(hv); - sv_setiv(subgen, PL_sub_generation); + return TRUE; + + stash_linear_isa = mro_get_linear_isa(stash); + svp = AvARRAY(stash_linear_isa) + 1; + items = AvFILLp(stash_linear_isa); + while (items--) { + SV* const basename_sv = *svp++; + HV* const basestash = gv_stashsv(basename_sv, 0); + if (!basestash) { + if (ckWARN(WARN_SYNTAX)) + Perl_warner(aTHX_ packWARN(WARN_SYNTAX), + "Can't locate package %"SVf" for the parents of %s", + SVfARG(basename_sv), hvname); + continue; } + if(name_stash == basestash || strEQ(name, SvPVX(basename_sv))) + return TRUE; } - gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); - - if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { - if (!hv || !subgen) { - gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); - - gv = *gvp; - - if (SvTYPE(gv) != SVt_PVGV) - gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); - - if (!hv) - hv = GvHVn(gv); - if (!subgen) { - subgen = newSViv(PL_sub_generation); - GvSV(gv) = subgen; - } - } - if (hv) { - SV** svp = AvARRAY(av); - /* NOTE: No support for tied ISA */ - I32 items = AvFILLp(av) + 1; - while (items--) { - SV* const sv = *svp++; - HV* const basestash = gv_stashsv(sv, FALSE); - if (!basestash) { - if (ckWARN(WARN_MISC)) - Perl_warner(aTHX_ packWARN(WARN_SYNTAX), - "Can't locate package %"SVf" for @%s::ISA", - sv, hvname); - continue; - } - if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, - len, level + 1)) { - (void)hv_store(hv,name,len,&PL_sv_yes,0); - return &PL_sv_yes; - } - } - (void)hv_store(hv,name,len,&PL_sv_no,0); - } - } - return &PL_sv_no; + return FALSE; } /* @@ -130,9 +78,9 @@ S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash, =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. It works -for class names as well as for objects. +Returns a boolean indicating whether the SV is derived from the specified class +I. To check derivation at the Perl level, call C as a +normal Perl method. =cut */ @@ -140,35 +88,112 @@ for class names as well as for objects. bool Perl_sv_derived_from(pTHX_ SV *sv, const char *name) { - const char *type = NULL; - HV *stash = NULL; - 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); + stash = gv_stashsv(sv, 0); } - name_stash = gv_stashpv(name, FALSE); + if (stash) { + HV * const name_stash = gv_stashpv(name, 0); + return isa_lookup(stash, name, name_stash); + } + 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; + SV *methodname; + + 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_nolen(sv); + } + + if (strEQ(name,classname)) + return TRUE; + + PUSHMARK(SP); + XPUSHs(sv); + XPUSHs(sv_2mortal(newSVpv(name, 0))); + PUTBACK; + + methodname = sv_2mortal(newSVpv("isa", 0)); + /* ugly hack: use the SvSCREAM flag so S_method_common + * can figure out we're calling DOES() and not isa(), + * and report eventual errors correctly. --rgs */ + SvSCREAM_on(methodname); + call_sv(methodname, G_SCALAR | G_METHOD); + SPAGAIN; + + does_it = SvTRUE( TOPs ); + FREETMPS; + LEAVE; + + return does_it; +} + +regexp * +Perl_get_re_arg( pTHX_ SV *sv, U32 flags, MAGIC **mgp) { + MAGIC *mg; + if (sv) { + if (SvMAGICAL(sv)) + mg_get(sv); + if (SvROK(sv) && + (sv = (SV*)SvRV(sv)) && /* assign deliberate */ + SvTYPE(sv) == SVt_PVMG && + (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */ + { + if (mgp) *mgp = mg; + return (regexp *)mg->mg_obj; + } + } + if (mgp) *mgp = NULL; + return ((flags && PL_curpm) ? PM_GETRE(PL_curpm) : NULL); +} + + 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); @@ -199,14 +224,23 @@ XS(XS_Regexp_DESTROY); XS(XS_Internals_hash_seed); XS(XS_Internals_rehash_seed); XS(XS_Internals_HvREHASH); +XS(XS_Internals_inc_sub_generation); +XS(XS_re_is_regexp); +XS(XS_re_regname); +XS(XS_re_regnames); +XS(XS_re_regnames_iterinit); +XS(XS_re_regnames_iternext); +XS(XS_re_regnames_count); 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 */ @@ -247,12 +281,20 @@ Perl_boot_core_UNIVERSAL(pTHX) 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, "\\%"); + newXSproto("re::is_regexp", XS_re_is_regexp, file, "$"); + newXSproto("re::regname", XS_re_regname, file, ";$$"); + newXSproto("re::regnames", XS_re_regnames, file, ";$"); + newXSproto("re::regnames_iterinit", XS_re_regnames_iterinit, file, ""); + newXSproto("re::regnames_iternext", XS_re_regnames_iternext, file, ";$"); + newXSproto("re::regnames_count", XS_re_regnames_count, file, ""); } XS(XS_UNIVERSAL_isa) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 2) Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); @@ -275,11 +317,13 @@ XS(XS_UNIVERSAL_isa) XS(XS_UNIVERSAL_can) { + dVAR; dXSARGS; SV *sv; const char *name; SV *rv; HV *pkg = NULL; + PERL_UNUSED_ARG(cv); if (items != 2) Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); @@ -301,7 +345,7 @@ XS(XS_UNIVERSAL_can) pkg = SvSTASH(sv); } else { - pkg = gv_stashsv(sv, FALSE); + pkg = gv_stashsv(sv, 0); } if (pkg) { @@ -314,14 +358,36 @@ XS(XS_UNIVERSAL_can) XSRETURN(1); } +XS(XS_UNIVERSAL_DOES) +{ + dVAR; + dXSARGS; + PERL_UNUSED_ARG(cv); + + 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; GV *gv; SV *sv; const char *undef; + PERL_UNUSED_ARG(cv); if (SvROK(ST(0))) { sv = (SV*)SvRV(ST(0)); @@ -330,17 +396,17 @@ XS(XS_UNIVERSAL_VERSION) pkg = SvSTASH(sv); } else { - pkg = gv_stashsv(ST(0), FALSE); + pkg = gv_stashsv(ST(0), 0); } - 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_setsv(nsv, sv); sv = nsv; if ( !sv_derived_from(sv, "version")) - upg_version(sv); + upg_version(sv, FALSE); undef = NULL; } else { @@ -366,20 +432,27 @@ XS(XS_UNIVERSAL_VERSION) if ( !sv_derived_from(req, "version")) { /* req may very well be R/O, so create a new object */ - SV * const nsv = sv_newmortal(); - sv_setsv(nsv, req); - req = nsv; - upg_version(req); + req = sv_2mortal( new_version(req) ); + } + + if ( vcmp( req, sv ) > 0 ) { + if ( hv_exists((HV*)SvRV(req), "qv", 2 ) ) { + Perl_croak(aTHX_ "%s version %"SVf" required--" + "this is only version %"SVf"", HvNAME_get(pkg), + SVfARG(vnormal(req)), + SVfARG(vnormal(sv))); + } else { + Perl_croak(aTHX_ "%s version %"SVf" required--" + "this is only version %"SVf"", HvNAME_get(pkg), + SVfARG(vstringify(req)), + SVfARG(vstringify(sv))); + } } - 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)); } if ( SvOK(sv) && sv_derived_from(sv, "version") ) { - ST(0) = vnumify(sv); + ST(0) = vstringify(sv); } else { ST(0) = sv; } @@ -389,7 +462,9 @@ XS(XS_UNIVERSAL_VERSION) XS(XS_version_new) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items > 3) Perl_croak(aTHX_ "Usage: version::new(class, version)"); SP -= items; @@ -401,17 +476,10 @@ XS(XS_version_new) ? 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(); @@ -420,7 +488,7 @@ XS(XS_version_new) rv = new_version(vs); if ( strcmp(classname,"version") != 0 ) /* inherited new() */ - sv_bless(rv, gv_stashpv(classname,TRUE)); + sv_bless(rv, gv_stashpv(classname, GV_ADD)); PUSHs(sv_2mortal(rv)); PUTBACK; @@ -430,7 +498,9 @@ XS(XS_version_new) XS(XS_version_stringify) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1) Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); SP -= items; @@ -452,7 +522,9 @@ XS(XS_version_stringify) XS(XS_version_numify) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1) Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); SP -= items; @@ -474,7 +546,9 @@ XS(XS_version_numify) XS(XS_version_normal) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1) Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); SP -= items; @@ -496,7 +570,9 @@ XS(XS_version_normal) XS(XS_version_vcmp) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1) Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); SP -= items; @@ -540,13 +616,15 @@ XS(XS_version_vcmp) XS(XS_version_boolean) { - dXSARGS; - if (items < 1) - Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); - SP -= items; + dVAR; + dXSARGS; + PERL_UNUSED_ARG(cv); + 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; @@ -557,7 +635,9 @@ XS(XS_version_boolean) XS(XS_version_noop) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1) Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); if (sv_derived_from(ST(0), "version")) @@ -571,7 +651,9 @@ XS(XS_version_noop) XS(XS_version_is_alpha) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); SP -= items; @@ -590,29 +672,19 @@ XS(XS_version_is_alpha) XS(XS_version_qv) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: version::qv(ver)"); SP -= items; { SV * ver = ST(0); if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ - SV * const vs = sv_newmortal(); - char *version; - if ( SvNOK(ver) ) /* may get too much accuracy */ - { - char tbuf[64]; - const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); - version = savepvn(tbuf, len); - } - else - { - version = savesvpv(ver); - } - (void)scan_version(version,vs,TRUE); - Safefree(version); - - PUSHs(vs); + SV * const rv = sv_newmortal(); + sv_setsv(rv,ver); /* make a duplicate */ + upg_version(rv, TRUE); + PUSHs(rv); } else { @@ -626,7 +698,9 @@ XS(XS_version_qv) XS(XS_utf8_is_utf8) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); else { @@ -641,7 +715,9 @@ XS(XS_utf8_is_utf8) XS(XS_utf8_valid) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); else { @@ -658,7 +734,9 @@ XS(XS_utf8_valid) XS(XS_utf8_encode) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); sv_utf8_encode(ST(0)); @@ -667,7 +745,9 @@ XS(XS_utf8_encode) XS(XS_utf8_decode) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); else { @@ -681,7 +761,9 @@ XS(XS_utf8_decode) XS(XS_utf8_upgrade) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); else { @@ -697,7 +779,9 @@ XS(XS_utf8_upgrade) XS(XS_utf8_downgrade) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1 || items > 2) Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); else { @@ -713,8 +797,10 @@ XS(XS_utf8_downgrade) XS(XS_utf8_native_to_unicode) { + dVAR; dXSARGS; const UV uv = SvUV(ST(0)); + PERL_UNUSED_ARG(cv); if (items > 1) Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); @@ -725,8 +811,10 @@ XS(XS_utf8_native_to_unicode) XS(XS_utf8_unicode_to_native) { + dVAR; dXSARGS; const UV uv = SvUV(ST(0)); + PERL_UNUSED_ARG(cv); if (items > 1) Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); @@ -737,8 +825,10 @@ XS(XS_utf8_unicode_to_native) XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ { + dVAR; dXSARGS; SV * const sv = SvRV(ST(0)); + PERL_UNUSED_ARG(cv); if (items == 1) { if (SvREADONLY(sv)) @@ -762,8 +852,10 @@ XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ { + dVAR; dXSARGS; SV * const sv = SvRV(ST(0)); + PERL_UNUSED_ARG(cv); if (items == 1) XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ @@ -777,7 +869,9 @@ XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ XS(XS_Internals_hv_clear_placehold) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items != 1) Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); @@ -790,12 +884,15 @@ XS(XS_Internals_hv_clear_placehold) XS(XS_Regexp_DESTROY) { + PERL_UNUSED_CONTEXT; PERL_UNUSED_ARG(cv); } XS(XS_PerlIO_get_layers) { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (items < 1 || items % 2 == 0) Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); #ifdef USE_PERLIO @@ -887,9 +984,11 @@ XS(XS_PerlIO_get_layers) else { if (namok && argok) XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", - *namsvp, *argsvp)); + SVfARG(*namsvp), + SVfARG(*argsvp))); else if (namok) - XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); + XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, + SVfARG(*namsvp))); else XPUSHs(&PL_sv_undef); nitem++; @@ -897,7 +996,7 @@ XS(XS_PerlIO_get_layers) const IV flags = SvIVX(*flgsvp); if (flags & PERLIO_F_UTF8) { - XPUSHs(newSVpvn("utf8", 4)); + XPUSHs(newSVpvs("utf8")); nitem++; } } @@ -916,6 +1015,7 @@ XS(XS_PerlIO_get_layers) XS(XS_Internals_hash_seed) { + dVAR; /* Using dXSARGS would also have dITEM and dSP, * which define 2 unused local variables. */ dAXMARK; @@ -926,6 +1026,7 @@ XS(XS_Internals_hash_seed) XS(XS_Internals_rehash_seed) { + dVAR; /* Using dXSARGS would also have dITEM and dSP, * which define 2 unused local variables. */ dAXMARK; @@ -936,7 +1037,9 @@ XS(XS_Internals_rehash_seed) XS(XS_Internals_HvREHASH) /* Subject to change */ { + dVAR; dXSARGS; + PERL_UNUSED_ARG(cv); if (SvROK(ST(0))) { const HV * const hv = (HV *) SvRV(ST(0)); if (items == 1 && SvTYPE(hv) == SVt_PVHV) { @@ -949,6 +1052,229 @@ XS(XS_Internals_HvREHASH) /* Subject to change */ Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); } +XS(XS_re_is_regexp) +{ + dVAR; + dXSARGS; + if (items != 1) + Perl_croak(aTHX_ "Usage: %s(%s)", "re::is_regexp", "sv"); + PERL_UNUSED_VAR(cv); /* -W */ + PERL_UNUSED_VAR(ax); /* -Wall */ + SP -= items; + { + SV * sv = ST(0); + if ( Perl_get_re_arg( aTHX_ sv, 0, NULL ) ) + { + XSRETURN_YES; + } else { + XSRETURN_NO; + } + /* NOTREACHED */ + PUTBACK; + return; + } +} + +XS(XS_re_regname) +{ + + dVAR; + dXSARGS; + if (items < 1 || items > 2) + Perl_croak(aTHX_ "Usage: %s(%s)", "re::regname", "name[, all ]"); + PERL_UNUSED_VAR(cv); /* -W */ + PERL_UNUSED_VAR(ax); /* -Wall */ + SP -= items; + { + SV * sv = ST(0); + SV * all; + regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL; + SV *bufs = NULL; + + if (items < 2) + all = NULL; + else { + all = ST(1); + } + { + if (SvPOK(sv) && re && re->paren_names) { + bufs = CALLREG_NAMEDBUF_FETCH(re,sv,all && SvTRUE(all)); + if (bufs) { + if (all && SvTRUE(all)) + XPUSHs(newRV(bufs)); + else + XPUSHs(SvREFCNT_inc(bufs)); + XSRETURN(1); + } + } + XSRETURN_UNDEF; + } + PUTBACK; + return; + } +} + +XS(XS_re_regnames) +{ + dVAR; + dXSARGS; + if (items < 0 || items > 1) + Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames", "[all]"); + PERL_UNUSED_VAR(cv); /* -W */ + PERL_UNUSED_VAR(ax); /* -Wall */ + SP -= items; + { + SV * all; + regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL; + IV count = 0; + + if (items < 1) + all = NULL; + else { + all = ST(0); + } + { + if (re && re->paren_names) { + HV *hv= re->paren_names; + (void)hv_iterinit(hv); + while (1) { + HE *temphe = hv_iternext_flags(hv,0); + if (temphe) { + IV i; + IV parno = 0; + SV* sv_dat = HeVAL(temphe); + I32 *nums = (I32*)SvPVX(sv_dat); + for ( i = 0; i < SvIVX(sv_dat); i++ ) { + if ((I32)(re->lastcloseparen) >= nums[i] && + re->offs[nums[i]].start != -1 && + re->offs[nums[i]].end != -1) + { + parno = nums[i]; + break; + } + } + if (parno || (all && SvTRUE(all))) { + STRLEN len; + char *pv = HePV(temphe, len); + if ( GIMME_V == G_ARRAY ) + XPUSHs(newSVpvn(pv,len)); + count++; + } + } else { + break; + } + } + } + if ( GIMME_V == G_ARRAY ) + XSRETURN(count); + else + XSRETURN_UNDEF; + } + PUTBACK; + return; + } +} + + +XS(XS_re_regnames_iterinit) +{ + dVAR; + dXSARGS; + if (items != 0) + Perl_croak(aTHX_ "Usage: re::regnames_iterinit()"); + PERL_UNUSED_VAR(cv); /* -W */ + PERL_UNUSED_VAR(ax); /* -Wall */ + SP -= items; + { + regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL; + if (re && re->paren_names) { + (void)hv_iterinit(re->paren_names); + XPUSHs(newSViv(HvTOTALKEYS(re->paren_names))); + } else { + XSRETURN_UNDEF; + } + PUTBACK; + return; + } +} + + +XS(XS_re_regnames_iternext) +{ + dVAR; + dXSARGS; + if (items < 0 || items > 1) + Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_iternext", "[all]"); + PERL_UNUSED_VAR(cv); /* -W */ + PERL_UNUSED_VAR(ax); /* -Wall */ + SP -= items; + { + SV * all; + regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL; + + if (items < 1) + all = NULL; + else { + all = ST(0); + } + if (re && re->paren_names) { + HV *hv= re->paren_names; + while (1) { + HE *temphe = hv_iternext_flags(hv,0); + if (temphe) { + IV i; + IV parno = 0; + SV* sv_dat = HeVAL(temphe); + I32 *nums = (I32*)SvPVX(sv_dat); + for ( i = 0; i < SvIVX(sv_dat); i++ ) { + if ((I32)(re->lastcloseparen) >= nums[i] && + re->offs[nums[i]].start != -1 && + re->offs[nums[i]].end != -1) + { + parno = nums[i]; + break; + } + } + if (parno || (all && SvTRUE(all))) { + STRLEN len; + char *pv = HePV(temphe, len); + XPUSHs(newSVpvn(pv,len)); + XSRETURN(1); + } + } else { + break; + } + } + } + XSRETURN_UNDEF; + PUTBACK; + return; + } +} + + +XS(XS_re_regnames_count) +{ + regexp *re = PL_curpm ? PM_GETRE(PL_curpm) : NULL; + dVAR; + dXSARGS; + + if (items != 0) + Perl_croak(aTHX_ "Usage: %s(%s)", "re::regnames_count", ""); + PERL_UNUSED_VAR(cv); /* -W */ + PERL_UNUSED_VAR(ax); /* -Wall */ + SP -= items; + + if (re && re->paren_names) { + XPUSHs(newSViv(HvTOTALKEYS(re->paren_names))); + } else { + XSRETURN_UNDEF; + } + PUTBACK; + return; +} + + /* * Local variables: * c-indentation-style: bsd