#include "perl.h"
#include "XSUB.h"
+/* *********** ppport stuff */
+
+#ifndef PERL_UNUSED_VAR
+# define PERL_UNUSED_VAR(x) ((void)x)
+#endif
+
+#if defined(PERL_GCC_PEDANTIC)
+# ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
+# define PERL_GCC_BRACE_GROUPS_FORBIDDEN
+# endif
+#endif
+
+#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
+# ifndef PERL_USE_GCC_BRACE_GROUPS
+# define PERL_USE_GCC_BRACE_GROUPS
+# endif
+#endif
+
+#ifndef SvREFCNT_inc
+# ifdef PERL_USE_GCC_BRACE_GROUPS
+# define SvREFCNT_inc(sv) \
+ ({ \
+ SV * const _sv = (SV*)(sv); \
+ if (_sv) \
+ (SvREFCNT(_sv))++; \
+ _sv; \
+ })
+# else
+# define SvREFCNT_inc(sv) \
+ ((PL_Sv=(SV*)(sv)) ? (++(SvREFCNT(PL_Sv)),PL_Sv) : NULL)
+# endif
+#endif
+
+#ifndef dAX
+# define dAX I32 ax = MARK - PL_stack_base + 1
+#endif
+
+#ifndef dVAR
+# define dVAR dNOOP
+#endif
+
+#ifndef packWARN
+# define packWARN(a) (a)
+#endif
+
+/* *********** end ppport.h stuff */
+
+#ifndef SVfARG
+# define SVfARG(p) ((void*)(p))
+#endif
+
/* Most of this code is backported from the bleadperl patch's
mro.c, and then modified to work with Class::C3's
internals.
I32 made_mortal_cache = 0;
assert(stash);
- assert(HvAUX(stash));
stashname = HvNAME(stash);
stashname_len = strlen(stashname);
SV* const seqitem = *seq_ptr++;
HE* const he = hv_fetch_ent(tails, seqitem, 0, 0);
if(!he) {
- hv_store_ent(tails, seqitem, newSViv(1), 0);
+ if(!hv_store_ent(tails, seqitem, newSViv(1), 0)) {
+ croak("failed to store value in hash");
+ }
}
else {
SV* const val = HeVAL(he);
/* If we had candidates, but nobody won, then the @ISA
hierarchy is not C3-incompatible */
if(!winner) {
+ SV *errmsg;
+ I32 i;
/* we have to do some cleanup before we croak */
+ errmsg = newSVpvf("Inconsistent hierarchy during C3 merge of class '%s':\n\t"
+ "current merge results [\n", stashname);
+ for (i = 0; i <= av_len(retval); i++) {
+ SV **elem = av_fetch(retval, i, 0);
+ sv_catpvf(errmsg, "\t\t%"SVf",\n", SVfARG(*elem));
+ }
+ sv_catpvf(errmsg, "\t]\n\tmerging failed on '%"SVf"'", SVfARG(cand));
+
SvREFCNT_dec(retval);
Safefree(heads);
- Perl_croak(aTHX_ "Inconsistent hierarchy during C3 merge of class '%s': "
- "merging failed on parent '%s'", stashname, SvPV_nolen(cand));
+ croak("%"SVf, SVfARG(errmsg));
}
}
}
if(!made_mortal_cache) {
SvREFCNT_inc(retval);
- hv_store(cache, stashname, stashname_len, (SV*)retval, 0);
+ if(!hv_store(cache, stashname, stashname_len, (SV*)retval, 0)) {
+ croak("failed to store value in hash");
+ }
}
return retval;
return i;
}
-STATIC SV*
-__nextcan(pTHX_ SV* self, I32 throw_nomethod)
+XS(XS_Class_C3_XS_nextcan);
+XS(XS_Class_C3_XS_nextcan)
{
- register I32 cxix;
+ dVAR; dXSARGS;
+
+ SV* self = ST(0);
+ const I32 throw_nomethod = SvIVX(ST(1));
+ register I32 cxix = cxstack_ix;
register const PERL_CONTEXT *ccstack = cxstack;
const PERL_SI *top_si = PL_curstackinfo;
HV* selfstash;
GV* candidate = NULL;
CV* cand_cv = NULL;
const char *hvname;
- I32 items;
+ I32 entries;
HV* nmcache;
HE* cache_entry;
SV* cachekey;
+ I32 i;
+
+ SP -= items;
if(sv_isobject(self))
selfstash = SvSTASH(SvRV(self));
if (!hvname)
Perl_croak(aTHX_ "Can't use anonymous symbol table for method lookup");
- cxix = __dopoptosub_at(cxstack, cxstack_ix);
-
/* This block finds the contextually-enclosing fully-qualified subname,
much like looking at (caller($i))[3] until you find a real sub that
- isn't ANON, etc */
- for (;;) {
- /* we may be in a higher stacklevel, so dig down deeper */
- while (cxix < 0) {
- if(top_si->si_type == PERLSI_MAIN)
- Perl_croak(aTHX_ "next::method/next::can/maybe::next::method must be used in method context");
- top_si = top_si->si_prev;
- ccstack = top_si->si_cxstack;
- cxix = __dopoptosub_at(ccstack, top_si->si_cxix);
- }
+ isn't ANON, etc (also skips over pureperl next::method, etc) */
+ for(i = 0; i < 2; i++) {
+ cxix = __dopoptosub_at(ccstack, cxix);
+ for (;;) {
+ /* we may be in a higher stacklevel, so dig down deeper */
+ while (cxix < 0) {
+ if(top_si->si_type == PERLSI_MAIN)
+ Perl_croak(aTHX_ "next::method/next::can/maybe::next::method must be used in method context");
+ top_si = top_si->si_prev;
+ ccstack = top_si->si_cxstack;
+ cxix = __dopoptosub_at(ccstack, top_si->si_cxix);
+ }
- if(CxTYPE((PERL_CONTEXT*)(&ccstack[cxix])) != CXt_SUB
- || (PL_DBsub && GvCV(PL_DBsub) && ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))) {
- cxix = __dopoptosub_at(ccstack, cxix - 1);
- continue;
- }
+ if(CxTYPE((PERL_CONTEXT*)(&ccstack[cxix])) != CXt_SUB
+ || (PL_DBsub && GvCV(PL_DBsub) && ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))) {
+ cxix = __dopoptosub_at(ccstack, cxix - 1);
+ continue;
+ }
- {
- const I32 dbcxix = __dopoptosub_at(ccstack, cxix - 1);
- if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) {
- if(CxTYPE((PERL_CONTEXT*)(&ccstack[dbcxix])) != CXt_SUB) {
- cxix = dbcxix;
- continue;
+ {
+ const I32 dbcxix = __dopoptosub_at(ccstack, cxix - 1);
+ if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) {
+ if(CxTYPE((PERL_CONTEXT*)(&ccstack[dbcxix])) != CXt_SUB) {
+ cxix = dbcxix;
+ continue;
+ }
}
}
- }
- cvgv = CvGV(ccstack[cxix].blk_sub.cv);
+ cvgv = CvGV(ccstack[cxix].blk_sub.cv);
- if(!isGV(cvgv)) {
- cxix = __dopoptosub_at(ccstack, cxix - 1);
- continue;
- }
+ if(!isGV(cvgv)) {
+ cxix = __dopoptosub_at(ccstack, cxix - 1);
+ continue;
+ }
- /* we found a real sub here */
- sv = sv_2mortal(newSV(0));
+ /* we found a real sub here */
+ sv = sv_2mortal(newSV(0));
- gv_efullname3(sv, cvgv, NULL);
+ gv_efullname3(sv, cvgv, NULL);
- fq_subname = SvPVX(sv);
- fq_subname_len = SvCUR(sv);
+ fq_subname = SvPVX(sv);
+ fq_subname_len = SvCUR(sv);
- subname = strrchr(fq_subname, ':');
- if(!subname)
- Perl_croak(aTHX_ "next::method/next::can/maybe::next::method cannot find enclosing method");
+ subname = strrchr(fq_subname, ':');
+ if(!subname)
+ Perl_croak(aTHX_ "next::method/next::can/maybe::next::method cannot find enclosing method");
- subname++;
- subname_len = fq_subname_len - (subname - fq_subname);
- if(subname_len == 8 && strEQ(subname, "__ANON__")) {
- cxix = __dopoptosub_at(ccstack, cxix - 1);
- continue;
+ subname++;
+ subname_len = fq_subname_len - (subname - fq_subname);
+ if(subname_len == 8 && strEQ(subname, "__ANON__")) {
+ cxix = __dopoptosub_at(ccstack, cxix - 1);
+ continue;
+ }
+ break;
}
- break;
+ cxix--;
}
/* If we made it to here, we found our context */
if(val == &PL_sv_undef) {
if(throw_nomethod)
Perl_croak(aTHX_ "No next::method '%s' found for %s", subname, hvname);
- return &PL_sv_undef;
+ XSRETURN_EMPTY;
}
- return SvREFCNT_inc(val);
+ XPUSHs(sv_2mortal(newRV_inc(val)));
+ XSRETURN(1);
}
/* beyond here is just for cache misses, so perf isn't as critical */
linear_av = __mro_linear_isa_c3(aTHX_ selfstash, NULL, 0);
linear_svp = AvARRAY(linear_av);
- items = AvFILLp(linear_av) + 1;
+ entries = AvFILLp(linear_av) + 1;
- while (items--) {
+ while (entries--) {
SV* const linear_sv = *linear_svp++;
assert(linear_sv);
if(sv_eq(linear_sv, stashname))
break;
}
- if(items > 0) {
+ if(entries > 0) {
SV* sub_sv = sv_2mortal(newSVpv(subname, subname_len));
HV* cc3_mro = get_hv("Class::C3::MRO", 0);
- while (items--) {
+ while (entries--) {
SV* const linear_sv = *linear_svp++;
assert(linear_sv);
if (SvTYPE(candidate) == SVt_PVGV && (cand_cv = GvCV(candidate)) && !GvCVGEN(candidate)) {
SvREFCNT_dec(linear_av);
SvREFCNT_inc((SV*)cand_cv);
- hv_store_ent(nmcache, newSVsv(cachekey), (SV*)cand_cv, 0);
- return (SV*)cand_cv;
+ if (!hv_store_ent(nmcache, newSVsv(cachekey), (SV*)cand_cv, 0)) {
+ croak("failed to store value in hash");
+ }
+ XPUSHs(sv_2mortal(newRV_inc((SV*)cand_cv)));
+ XSRETURN(1);
}
}
}
SvREFCNT_dec(linear_av);
- hv_store_ent(nmcache, newSVsv(cachekey), &PL_sv_undef, 0);
+ if (!hv_store_ent(nmcache, newSVsv(cachekey), &PL_sv_undef, 0)) {
+ croak("failed to store value in hash");
+ }
if(throw_nomethod)
Perl_croak(aTHX_ "No next::method '%s' found for %s", subname, hvname);
- return &PL_sv_undef;
+ XSRETURN_EMPTY;
}
XS(XS_Class_C3_XS_calculateMRO);
XS(XS_Class_C3_XS_calculateMRO)
{
-#ifdef dVAR
dVAR; dXSARGS;
-#else
- dXSARGS;
-#endif
SV* classname;
HV* class_stash;
XS(XS_Class_C3_XS_plsubgen);
XS(XS_Class_C3_XS_plsubgen)
{
- #ifdef dVAR
- dVAR; dXSARGS;
- #else
- dXSARGS;
- #endif
+ dVAR; dXSARGS;
SP -= items;
XPUSHs(sv_2mortal(newSViv(PL_sub_generation)));
XS(XS_Class_C3_XS_calc_mdt);
XS(XS_Class_C3_XS_calc_mdt)
{
-#ifdef dVAR
dVAR; dXSARGS;
-#else
- dXSARGS;
-#endif
SV* classname;
HV* cache;
class_mro = __mro_linear_isa_c3(aTHX_ class_stash, cache, 0);
our_c3mro = newHV();
- hv_store(our_c3mro, "MRO", 3, (SV*)newRV_noinc((SV*)class_mro), 0);
+ if(!hv_store(our_c3mro, "MRO", 3, (SV*)newRV_noinc((SV*)class_mro), 0)) {
+ croak("failed to store value in hash");
+ }
hv = get_hv("Class::C3::MRO", 1);
- hv_store_ent(hv, classname, (SV*)newRV_noinc((SV*)our_c3mro), 0);
+ if(!hv_store_ent(hv, classname, (SV*)newRV_noinc((SV*)our_c3mro), 0)) {
+ croak("failed to store value in hash");
+ }
methods = newHV();
}
hv_iterinit(mro_stash);
- while(he = hv_iternext(mro_stash)) {
+ while((he = hv_iternext(mro_stash))) {
CV* code;
SV* mskey;
SV* msval;
orig = newSVsv(mro_class);
sv_catpvn(orig, "::", 2);
sv_catsv(orig, mskey);
- hv_store(meth_hash, "orig", 4, orig, 0);
- hv_store(meth_hash, "code", 4, newRV_inc((SV*)code), 0);
- hv_store_ent(methods, mskey, newRV_noinc((SV*)meth_hash), 0);
+ if( !hv_store(meth_hash, "orig", 4, orig, 0)
+ || !hv_store(meth_hash, "code", 4, newRV_inc((SV*)code), 0)
+ || !hv_store_ent(methods, mskey, newRV_noinc((SV*)meth_hash), 0) ) {
+ croak("failed to store value in hash");
+ }
}
}
- hv_store(our_c3mro, "methods", 7, newRV_noinc((SV*)methods), 0);
- if(has_ovf) hv_store(our_c3mro, "has_overload_fallback", 21, SvREFCNT_inc(has_ovf), 0);
- XSRETURN_EMPTY;
-}
-
-XS(XS_next_can);
-XS(XS_next_can)
-{
-#ifdef dVAR
- dVAR; dXSARGS;
-#else
- dXSARGS;
-#endif
-
- SV* self = ST(0);
- SV* methcv = __nextcan(aTHX_ self, 0);
-
- PERL_UNUSED_VAR(items);
-
- if(methcv == &PL_sv_undef) {
- ST(0) = &PL_sv_undef;
+ if(!hv_store(our_c3mro, "methods", 7, newRV_noinc((SV*)methods), 0)) {
+ croak("failed to store value in hash");
}
- else {
- ST(0) = sv_2mortal(newRV_inc(methcv));
+ if(has_ovf) {
+ if(!hv_store(our_c3mro, "has_overload_fallback", 21, SvREFCNT_inc(has_ovf), 0)) {
+ croak("failed to store value in hash");
+ }
}
-
- XSRETURN(1);
-}
-
-XS(XS_next_method);
-XS(XS_next_method)
-{
- dMARK;
- dAX;
- SV* self = ST(0);
- SV* methcv = __nextcan(aTHX_ self, 1);
-
- PL_markstack_ptr++;
- call_sv(methcv, GIMME_V);
+ XSRETURN_EMPTY;
}
-XS(XS_maybe_next_method);
-XS(XS_maybe_next_method)
-{
- dMARK;
- dAX;
- SV* self = ST(0);
- SV* methcv = __nextcan(aTHX_ self, 0);
-
- if(methcv == &PL_sv_undef) {
- ST(0) = &PL_sv_undef;
- XSRETURN(1);
- }
-
- PL_markstack_ptr++;
- call_sv(methcv, GIMME_V);
-}
+MODULE = Class::C3::XS PACKAGE = Class::C3::XS
-MODULE = Class::C3::XS PACKAGE = Class::C3::XS
+PROTOTYPES: DISABLED
BOOT:
newXS("Class::C3::XS::calculateMRO", XS_Class_C3_XS_calculateMRO, __FILE__);
newXS("Class::C3::XS::_plsubgen", XS_Class_C3_XS_plsubgen, __FILE__);
newXS("Class::C3::XS::_calculate_method_dispatch_table", XS_Class_C3_XS_calc_mdt, __FILE__);
- newXS("next::can", XS_next_can, __FILE__);
- newXS("next::method", XS_next_method, __FILE__);
- newXS("maybe::next::method", XS_maybe_next_method, __FILE__);
+ newXS("Class::C3::XS::_nextcan", XS_Class_C3_XS_nextcan, __FILE__);
projects / gitmo/Class-C3-XS.git / blobdiff