#define SvRXOK(sv) (SvROK(sv) && SvMAGICAL(SvRV(sv)) && mg_find(SvRV(sv), PERL_MAGIC_qr))
#endif
+typedef int (*check_fptr_t)(pTHX_ SV* const data, SV* const sv);
+
int
mouse_tc_check(pTHX_ SV* const tc_code, SV* const sv) {
- if(SvIOK(tc_code)){ /* built-in type constraints */
- return mouse_builtin_tc_check(aTHX_ SvIVX(tc_code), sv);
+ CV* cv;
+ assert(SvROK(tc_code) && SvTYPE(SvRV(tc_code)));
+
+ cv = (CV*)SvRV(tc_code);
+
+ if(CvISXSUB(cv)){ /* can be built-in tc */
+ if(CvXSUB(cv) == XS_Mouse__Util__TypeConstraints_Item){
+ assert(CvXSUBANY(cv).any_iv > 0);
+
+ return mouse_builtin_tc_check(aTHX_ CvXSUBANY(cv).any_iv, sv);
+ }
+ else if(CvXSUB(cv) == XS_Mouse_parameterized_check){
+ MAGIC* const mg = (MAGIC*)CvXSUBANY(cv).any_ptr;
+
+ assert(CvXSUBANY(cv).any_ptr != NULL);
+ return CALL_FPTR((check_fptr_t)mg->mg_ptr)(aTHX_ mg->mg_obj /* stash */, sv);
+ }
}
- else {
+
+ /* user-defined type constraints */
+ {
int ok;
dSP;
meta = POPs;
PUTBACK;
- ok = is_instance_of(meta, newSVpvs_flags("Mouse::Meta::Role", SVs_TEMP));
+ ok = is_an_instance_of("Mouse::Meta::Role", meta);
FREETMPS;
LEAVE;
}
}
- return is_instance_of(sv, newSVpvs_flags("IO::Handle", SVs_TEMP));
+ return is_an_instance_of("IO::Handle", sv);
}
int
#define MG_klass_pv(mg) ((mg)->mg_ptr)
#define MG_klass_len(mg) ((mg)->mg_len)
-const char*
+static const char*
mouse_canonicalize_package_name(const char* name){
/* "::Foo" -> "Foo" */
}
static int
-lookup_isa(pTHX_ HV* const instance_stash, const char* const klass_pv){
+mouse_lookup_isa(pTHX_ HV* const instance_stash, const char* const klass_pv){
AV* const linearized_isa = mro_get_linear_isa(instance_stash);
SV** svp = AvARRAY(linearized_isa);
SV** const end = svp + AvFILLp(linearized_isa) + 1;
return FALSE;
}
-static int
-instance_isa(pTHX_ SV* const instance, const MAGIC* const mg){
- dMY_CXT;
- HV* const instance_stash = SvSTASH(SvRV(instance));
- GV* const instance_isa = gv_fetchmeth_autoload(instance_stash, "isa", sizeof("isa")-1, 0);
-
- /* the instance has no own isa method */
- if(instance_isa == NULL || GvCV(instance_isa) == GvCV(MY_CXT.universal_isa)){
- return MG_klass_stash(mg) == instance_stash
- || lookup_isa(aTHX_ instance_stash, MG_klass_pv(mg));
- }
- /* the instance has its own isa method */
- else {
- int retval;
- dSP;
+int
+mouse_is_an_instance_of(pTHX_ HV* const stash, SV* const instance){
+ assert(stash);
+ assert(SvTYPE(stash) == SVt_PVHV);
+
+ if(IsObject(instance)){
+ dMY_CXT;
+ HV* const instance_stash = SvSTASH(SvRV(instance));
+ GV* const instance_isa = gv_fetchmeth_autoload(instance_stash, "isa", sizeof("isa")-1, 0);
+
+ /* the instance has no own isa method */
+ if(instance_isa == NULL || GvCV(instance_isa) == GvCV(MY_CXT.universal_isa)){
+ return stash == instance_stash
+ || mouse_lookup_isa(aTHX_ instance_stash, HvNAME_get(stash));
+ }
+ /* the instance has its own isa method */
+ else {
+ int retval;
+ dSP;
- ENTER;
- SAVETMPS;
+ ENTER;
+ SAVETMPS;
- PUSHMARK(SP);
- EXTEND(SP, 2);
- PUSHs(instance);
- mPUSHp(MG_klass_pv(mg), MG_klass_len(mg));
- PUTBACK;
+ PUSHMARK(SP);
+ EXTEND(SP, 2);
+ PUSHs(instance);
+ mPUSHp(HvNAME_get(stash), HvNAMELEN_get(stash));
+ PUTBACK;
- call_sv((SV*)instance_isa, G_SCALAR);
+ call_sv((SV*)instance_isa, G_SCALAR);
- SPAGAIN;
+ SPAGAIN;
- retval = SvTRUEx(POPs);
+ retval = SvTRUEx(POPs);
- PUTBACK;
+ PUTBACK;
- FREETMPS;
- LEAVE;
+ FREETMPS;
+ LEAVE;
- return retval;
+ return retval;
+ }
}
+ return FALSE;
}
+static int
+mouse_is_an_instance_of_universal(pTHX_ SV* const data, SV* const sv){
+ PERL_UNUSED_ARG(data);
+ return SvROK(sv) && SvOBJECT(SvRV(sv));
+}
-XS(XS_isa_check){
- dVAR;
- dXSARGS;
- SV* sv;
+static MGVTBL mouse_util_type_constraints_vtbl; /* not used, only for identity */
- assert(XSANY.any_ptr != NULL);
+CV*
+mouse_generate_isa_predicate_for(pTHX_ SV* const klass, const char* const predicate_name){
+ STRLEN klass_len;
+ const char* klass_pv = SvPV_const(klass, klass_len);
+ CV* xsub;
+ SV* mg_obj;
+ void* mg_ptr;
- if(items != 1){
- if(items < 1){
- croak("Not enough arguments for is-a predicate");
- }
- else{
- croak("Too many arguments for is-a predicate");
- }
+ klass_pv = mouse_canonicalize_package_name(klass_pv);
+
+ if(strNE(klass_pv, "UNIVERSAL")){
+ mg_obj = (SV*)gv_stashpvn(klass_pv, klass_len, GV_ADD);
+ mg_ptr = (void*)mouse_is_an_instance_of;
+
+ }
+ else{
+ mg_obj = NULL;
+ mg_ptr = (void*)mouse_is_an_instance_of_universal;
}
- sv = ST(0);
- SvGETMAGIC(sv);
+ xsub = newXS(predicate_name, XS_Mouse_parameterized_check, __FILE__);
- ST(0) = boolSV( SvROK(sv) && SvOBJECT(SvRV(sv)) && instance_isa(aTHX_ sv, (MAGIC*)XSANY.any_ptr) );
- XSRETURN(1);
-}
+ CvXSUBANY(xsub).any_ptr = sv_magicext(
+ (SV*)xsub,
+ mg_obj,
+ PERL_MAGIC_ext,
+ &mouse_util_type_constraints_vtbl,
+ mg_ptr,
+ 0 /* indicates static data */
+ );
+ if(!predicate_name){
+ sv_2mortal((SV*)xsub);
+ }
+
+ return xsub;
+}
-XS(XS_isa_check_for_universal){
+XS(XS_Mouse_parameterized_check) {
dVAR;
dXSARGS;
- SV* sv;
- PERL_UNUSED_VAR(cv);
+ MAGIC* const mg = (MAGIC*)XSANY.any_ptr;
- if(items != 1){
- if(items < 1){
- croak("Not enough arguments for is-a predicate");
- }
- else{
- croak("Too many arguments for is-a predicate");
- }
+ if(items < 1){
+ croak("Too few arguments for parameterized check functions");
}
- sv = ST(0);
- SvGETMAGIC(sv);
-
- ST(0) = boolSV( SvROK(sv) && SvOBJECT(SvRV(sv)) );
+ SvGETMAGIC( ST(0) );
+ ST(0) = boolSV( CALL_FPTR((check_fptr_t)mg->mg_ptr)(aTHX_ mg->mg_obj, ST(0)) );
XSRETURN(1);
}
projects / gitmo/Mouse.git / blobdiff