X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=universal.c;h=032a536e556054dbab376e2d4420c3bf59b9109d;hb=dcc96bbd648270d5e7184f192cb9bada22ded67e;hp=938538f2a65911ed63ce0afb9a9ad590aec3a2eb;hpb=54310121b442974721115f93666234a200f5c7e4;p=p5sagit%2Fp5-mst-13.2.git diff --git a/universal.c b/universal.c index 938538f..032a536 100644 --- a/universal.c +++ b/universal.c @@ -1,18 +1,14 @@ #include "EXTERN.h" +#define PERL_IN_UNIVERSAL_C #include "perl.h" -#include "XSUB.h" /* * Contributed by Graham Barr * The main guts of traverse_isa was actually copied from gv_fetchmeth */ -static SV * -isa_lookup(stash, name, len, level) -HV *stash; -char *name; -int len; -int level; +STATIC SV * +S_isa_lookup(pTHX_ HV *stash, const char *name, int len, int level) { AV* av; GV* gv; @@ -20,26 +16,26 @@ int level; HV* hv = Nullhv; if (!stash) - return &sv_undef; + return &PL_sv_undef; if(strEQ(HvNAME(stash), name)) - return &sv_yes; + return &PL_sv_yes; if (level > 100) - croak("Recursive inheritance detected"); + Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", HvNAME(stash)); gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); - if (gvp && (gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv))) { + if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (hv = GvHV(gv))) { SV* sv; SV** svp = (SV**)hv_fetch(hv, name, len, FALSE); - if (svp && (sv = *svp) != (SV*)&sv_undef) + if (svp && (sv = *svp) != (SV*)&PL_sv_undef) return sv; } gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); - if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { + if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { if(!hv) { gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); @@ -52,32 +48,33 @@ int level; } if(hv) { SV** svp = AvARRAY(av); - I32 items = AvFILL(av) + 1; + /* NOTE: No support for tied ISA */ + I32 items = AvFILLp(av) + 1; while (items--) { SV* sv = *svp++; HV* basestash = gv_stashsv(sv, FALSE); if (!basestash) { - if (dowarn) - warn("Can't locate package %s for @%s::ISA", + dTHR; + if (ckWARN(WARN_MISC)) + Perl_warner(aTHX_ WARN_SYNTAX, + "Can't locate package %s for @%s::ISA", SvPVX(sv), HvNAME(stash)); continue; } - if(&sv_yes == isa_lookup(basestash, name, len, level + 1)) { - (void)hv_store(hv,name,len,&sv_yes,0); - return &sv_yes; + if(&PL_sv_yes == isa_lookup(basestash, name, len, level + 1)) { + (void)hv_store(hv,name,len,&PL_sv_yes,0); + return &PL_sv_yes; } } - (void)hv_store(hv,name,len,&sv_no,0); + (void)hv_store(hv,name,len,&PL_sv_no,0); } } - return &sv_no; + return boolSV(strEQ(name, "UNIVERSAL")); } bool -sv_derived_from(sv, name) -SV * sv ; -char * name ; +Perl_sv_derived_from(pTHX_ SV *sv, const char *name) { SV *rv; char *type; @@ -100,47 +97,64 @@ char * name ; } return (type && strEQ(type,name)) || - (stash && isa_lookup(stash, name, strlen(name), 0) == &sv_yes) + (stash && isa_lookup(stash, name, strlen(name), 0) == &PL_sv_yes) ? TRUE : FALSE ; } +void XS_UNIVERSAL_isa(pTHXo_ CV *cv); +void XS_UNIVERSAL_can(pTHXo_ CV *cv); +void XS_UNIVERSAL_VERSION(pTHXo_ CV *cv); + +void +Perl_boot_core_UNIVERSAL(pTHX) +{ + char *file = __FILE__; + + newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); + newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); + newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); +} + +#ifdef PERL_OBJECT +#define NO_XSLOCKS +#endif /* PERL_OBJECT */ + +#include "XSUB.h" -static XS(XS_UNIVERSAL_isa) { dXSARGS; SV *sv; char *name; + STRLEN n_a; if (items != 2) - croak("Usage: UNIVERSAL::isa(reference, kind)"); + Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); sv = ST(0); - name = (char *)SvPV(ST(1),na); + name = (char *)SvPV(ST(1),n_a); ST(0) = boolSV(sv_derived_from(sv, name)); XSRETURN(1); } -static XS(XS_UNIVERSAL_can) { dXSARGS; SV *sv; char *name; SV *rv; - GV *gv; - CV *cvp; HV *pkg = NULL; + STRLEN n_a; if (items != 2) - croak("Usage: UNIVERSAL::can(object-ref, method)"); + Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); sv = ST(0); - name = (char *)SvPV(ST(1),na); - rv = &sv_undef; + name = (char *)SvPV(ST(1),n_a); + rv = &PL_sv_undef; if(SvROK(sv)) { sv = (SV*)SvRV(sv); @@ -152,23 +166,15 @@ XS(XS_UNIVERSAL_can) } if (pkg) { - gv = gv_fetchmethod(pkg, name); - - if(gv && GvCV(gv)) { - /* If the sub is only a stub then we may have a gv to AUTOLOAD */ - GV **gvp = (GV**)hv_fetch(GvSTASH(gv), name, strlen(name), TRUE); - if(gvp && (cvp = GvCV(*gvp))) { - rv = sv_newmortal(); - sv_setsv(rv, newRV((SV*)cvp)); - } - } + GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); + if (gv && isGV(gv)) + rv = sv_2mortal(newRV((SV*)GvCV(gv))); } ST(0) = rv; XSRETURN(1); } -static XS(XS_UNIVERSAL_VERSION) { dXSARGS; @@ -177,12 +183,12 @@ XS(XS_UNIVERSAL_VERSION) GV *gv; SV *sv; char *undef; - double req; + NV req; if(SvROK(ST(0))) { sv = (SV*)SvRV(ST(0)); if(!SvOBJECT(sv)) - croak("Cannot find version of an unblessed reference"); + Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); pkg = SvSTASH(sv); } else { @@ -191,32 +197,25 @@ XS(XS_UNIVERSAL_VERSION) gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); - if (gvp && (gv = *gvp) != (GV*)&sv_undef && (sv = GvSV(gv))) { + if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (sv = GvSV(gv))) { SV *nsv = sv_newmortal(); sv_setsv(nsv, sv); sv = nsv; undef = Nullch; } else { - sv = (SV*)&sv_undef; + sv = (SV*)&PL_sv_undef; undef = "(undef)"; } - if (items > 1 && (undef || (req = SvNV(ST(1)), req > SvNV(sv)))) - croak("%s version %s required--this is only version %s", - HvNAME(pkg), SvPV(ST(1),na), undef ? undef : SvPV(sv,na)); + if (items > 1 && (undef || (req = SvNV(ST(1)), req > SvNV(sv)))) { + STRLEN n_a; + Perl_croak(aTHX_ "%s version %s required--this is only version %s", + HvNAME(pkg), SvPV(ST(1),n_a), undef ? undef : SvPV(sv,n_a)); + } ST(0) = sv; XSRETURN(1); } -void -boot_core_UNIVERSAL() -{ - char *file = __FILE__; - - newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); - newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); - newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); -}