4 static MGVTBL mop_accessor_vtbl; /* the MAGIC identity */
7 mop_accessor_get_mg(pTHX_ CV* const xsub){
8 return mop_mg_find(aTHX_ (SV*)xsub, &mop_accessor_vtbl, MOPf_DIE_ON_FAIL);
12 mop_install_accessor(pTHX_ const char* const fq_name, const char* const key, I32 const keylen, XSPROTO(accessor_impl), const mop_instance_vtbl* vtbl){
13 CV* const xsub = newXS((char*)fq_name, accessor_impl, __FILE__);
14 SV* const keysv = newSVpvn_share(key, keylen, 0U);
15 AV* const meta = newAV();
19 vtbl = mop_get_default_instance_vtbl(aTHX);
23 /* generated_xsub need sv_2mortal */
24 sv_2mortal((SV*)xsub);
27 mg = sv_magicext((SV*)xsub, (SV*)meta, PERL_MAGIC_ext, &mop_accessor_vtbl, (char*)vtbl, 0);
28 SvREFCNT_dec(meta); /* sv_magicext() increases refcnt in mg_obj */
30 av_store(meta, MOP_MI_SLOT, keysv);
33 * although we use MAGIC for gc, we also store mg to any slot for efficiency (gfx)
35 CvXSUBANY(xsub).any_ptr = (void*)mg;
42 mop_instantiate_xs_accessor(pTHX_ SV* const accessor, XSPROTO(accessor_impl), mop_instance_vtbl* const vtbl){
43 /* $key = $accessor->associated_attribute->name */
44 SV* const attr = mop_call0(aTHX_ accessor, mop_associated_attribute);
45 SV* const key = mop_call0(aTHX_ attr, mop_name);
47 const char* const kpv = SvPV_const(key, klen);
49 return mop_install_accessor(aTHX_ NULL /* anonymous */, kpv, klen, accessor_impl, vtbl);
53 mop_accessor_get_self(pTHX_ I32 const ax, I32 const items, CV* const cv) {
57 croak("too few arguments for %s", GvNAME(CvGV(cv)));
60 /* NOTE: If self has GETMAGIC, $self->accessor will invoke GETMAGIC
61 * before calling methods, so SvGETMAGIC(self) is not necessarily needed here.
65 if(!(SvROK(self) && SvOBJECT(SvRV(self)))){
66 croak("cant call %s as a class method", GvNAME(CvGV(cv)));
73 mop_debug_mi_access(pTHX_ AV* const mi, I32 const attr_ix){
75 assert(SvTYPE(mi) == SVt_PVAV);
76 assert(AvMAX(mi) >= attr_ix);
77 return &AvARRAY(mi)[attr_ix];
81 XS(mop_xs_simple_accessor)
84 dMOP_METHOD_COMMON; /* self, mg */
87 if(items == 1){ /* reader */
88 value = MOP_mg_get_slot(mg, self);
90 else if (items == 2){ /* writer */
91 value = MOP_mg_set_slot(mg, self, ST(1));
94 croak("expected exactly one or two argument");
97 ST(0) = value ? value : &PL_sv_undef;
102 XS(mop_xs_simple_reader)
105 dMOP_METHOD_COMMON; /* self, mg */
109 croak("expected exactly one argument");
112 value = MOP_mg_get_slot(mg, self);
113 ST(0) = value ? value : &PL_sv_undef;
117 XS(mop_xs_simple_writer)
120 dMOP_METHOD_COMMON; /* self, mg */
123 croak("expected exactly two argument");
126 ST(0) = MOP_mg_set_slot(mg, self, ST(1));
130 XS(mop_xs_simple_clearer)
133 dMOP_METHOD_COMMON; /* self, mg */
137 croak("expected exactly one argument");
140 value = MOP_mg_delete_slot(mg, self);
141 ST(0) = value ? value : &PL_sv_undef;
146 XS(mop_xs_simple_predicate)
149 dMOP_METHOD_COMMON; /* self, mg */
152 croak("expected exactly one argument");
155 ST(0) = boolSV( MOP_mg_has_slot(mg, self) );
160 XS(mop_xs_simple_predicate_for_metaclass)
163 dMOP_METHOD_COMMON; /* self, mg */
167 croak("expected exactly one argument");
170 value = MOP_mg_get_slot(mg, self);
171 ST(0) = boolSV( value && SvOK(value ));
175 MODULE = Class::MOP::Method::Accessor PACKAGE = Class::MOP::Method::Accessor
180 INSTALL_SIMPLE_READER_WITH_KEY(Method::Accessor, associated_attribute, attribute);
181 INSTALL_SIMPLE_READER(Method::Accessor, accessor_type);
185 _generate_accessor_method_xs(SV* self, void* instance_vtbl)
187 RETVAL = mop_instantiate_xs_accessor(aTHX_ self, mop_xs_simple_accessor, instance_vtbl);
192 _generate_reader_method_xs(SV* self, void* instance_vtbl)
194 RETVAL = mop_instantiate_xs_accessor(aTHX_ self, mop_xs_simple_reader, instance_vtbl);
199 _generate_writer_method_xs(SV* self, void* instance_vtbl)
201 RETVAL = mop_instantiate_xs_accessor(aTHX_ self, mop_xs_simple_writer, instance_vtbl);
206 _generate_predicate_method_xs(SV* self, void* instance_vtbl)
208 RETVAL = mop_instantiate_xs_accessor(aTHX_ self, mop_xs_simple_predicate, instance_vtbl);
213 _generate_clearer_method_xs(SV* self, void* instance_vtbl)
215 RETVAL = mop_instantiate_xs_accessor(aTHX_ self, mop_xs_simple_clearer, instance_vtbl);