4 mop_call_xs (pTHX_ XSPROTO(subaddr), CV *cv, SV **mark)
12 #if PERL_BCDVERSION >= 0x5010000
14 mop_check_package_cache_flag (pTHX_ HV *stash)
16 assert(SvTYPE(stash) == SVt_PVHV);
18 /* here we're trying to implement a c version of mro::get_pkg_gen($stash),
19 * however the perl core doesn't make it easy for us. It doesn't provide an
20 * api that just does what we want.
22 * However, we know that the information we want is, inside the core,
23 * available using HvMROMETA(stash)->pkg_gen. Unfortunately, although the
24 * HvMROMETA macro is public, it is implemented using Perl_mro_meta_init,
25 * which is not public and only available inside the core, as the mro
26 * interface as well as the structure returned by mro_meta_init isn't
27 * considered to be stable yet.
29 * Perl_mro_meta_init isn't declared static, so we could just define it
30 * ourselfs if perls headers don't do that for us, except that won't work
31 * on platforms where symbols need to be explicitly exported when linking
34 * So our, hopefully temporary, solution is to be even more evil and
35 * basically reimplement HvMROMETA in a very fragile way that'll blow up
36 * when the relevant parts of the mro implementation in core change.
42 return HvAUX(stash)->xhv_mro_meta
43 ? HvAUX(stash)->xhv_mro_meta->pkg_gen
47 #else /* pre 5.10.0 */
50 mop_check_package_cache_flag (pTHX_ HV *stash)
52 PERL_UNUSED_ARG(stash);
53 assert(SvTYPE(stash) == SVt_PVHV);
55 return PL_sub_generation;
60 mop_call0 (pTHX_ SV *const self, SV *const method)
69 call_sv(method, G_SCALAR | G_METHOD);
79 mop_get_code_info (SV *coderef, char **pkg, char **name)
81 if (!SvOK(coderef) || !SvROK(coderef) || SvTYPE(SvRV(coderef)) != SVt_PVCV) {
85 coderef = SvRV(coderef);
87 /* sub is still being compiled */
92 /* I think this only gets triggered with a mangled coderef, but if
93 we hit it without the guard, we segfault. The slightly odd return
94 value strikes me as an improvement (mst)
97 if ( isGV_with_GP(CvGV(coderef)) ) {
98 GV *gv = CvGV(coderef);
99 *pkg = HvNAME( GvSTASH(gv) ? GvSTASH(gv) : CvSTASH(coderef) );
100 *name = GvNAME( CvGV(coderef) );
102 *pkg = "__UNKNOWN__";
110 mop_get_package_symbols (HV *stash, type_filter_t filter, get_package_symbols_cb_t cb, void *ud)
114 (void)hv_iterinit(stash);
116 if (filter == TYPE_FILTER_NONE) {
117 while ( (he = hv_iternext(stash)) ) {
119 const char *key = HePV(he, keylen);
120 if (!cb(key, keylen, HeVAL(he), ud)) {
127 while ( (he = hv_iternext(stash)) ) {
128 GV * const gv = (GV*)HeVAL(he);
130 const char * const key = HePV(he, keylen);
135 case TYPE_FILTER_CODE: sv = (SV *)GvCVu(gv); break;
136 case TYPE_FILTER_ARRAY: sv = (SV *)GvAV(gv); break;
137 case TYPE_FILTER_IO: sv = (SV *)GvIO(gv); break;
138 case TYPE_FILTER_HASH: sv = (SV *)GvHV(gv); break;
139 case TYPE_FILTER_SCALAR: sv = (SV *)GvSV(gv); break;
141 croak("Unknown type");
144 /* expand the gv into a real typeglob if it
145 * contains stub functions or constants and we
146 * were asked to return CODE references */
147 else if (filter == TYPE_FILTER_CODE) {
148 gv_init(gv, stash, key, keylen, GV_ADDMULTI);
153 if (!cb(key, keylen, sv, ud)) {
161 collect_all_symbols (const char *key, STRLEN keylen, SV *val, void *ud)
165 if (!hv_store (hash, key, keylen, newRV_inc(val), 0)) {
166 croak("failed to store symbol ref");
173 mop_get_all_package_symbols (HV *stash, type_filter_t filter)
176 mop_get_package_symbols (stash, filter, collect_all_symbols, ret);
180 static MGVTBL mop_accessor_vtbl; /* the MAGIC identity */
183 mop_install_simple_accessor(pTHX_ const char* const fq_name, const char* const key, I32 const keylen, XSPROTO(accessor_impl)){
184 CV* const xsub = newXS((char*)fq_name, accessor_impl, __FILE__);
185 SV* const keysv = newSVpvn_share(key, keylen, 0U);
187 sv_magicext((SV*)xsub, keysv, PERL_MAGIC_ext, &mop_accessor_vtbl, NULL, 0);
188 SvREFCNT_dec(keysv); /* sv_magicext() increases refcnt in mg_obj */
193 mop_mg_find_by_vtbl(pTHX_ SV* const sv, const MGVTBL* const vtbl){
197 for(mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic){
198 if(mg->mg_virtual == vtbl){
206 mop_fetch_attr(pTHX_ SV* const self, SV* const key, I32 const create, CV* const cv){
209 croak("can't call %s as a class method", GvNAME(CvGV(cv)));
211 if (SvTYPE(SvRV(self)) != SVt_PVHV) {
212 croak("object is not a hashref");
214 if((he = hv_fetch_ent((HV*)SvRV(self), key, create, 0U))){
220 mop_delete_attr(pTHX_ SV* const self, SV* const key, CV* const cv){
223 croak("can't call %s as a class method", GvNAME(CvGV(cv)));
225 if (SvTYPE(SvRV(self)) != SVt_PVHV) {
226 croak("object is not a hashref");
228 if((sv = hv_delete_ent((HV*)SvRV(self), key, 0, 0U))){
234 XS(mop_xs_simple_accessor)
237 MAGIC* const mg = mop_mg_find_by_vtbl(aTHX_ (SV*)cv, &mop_accessor_vtbl);
238 SV* const key = mg->mg_obj;
240 if(items == 1){ /* reader */
241 attr = mop_fetch_attr(aTHX_ ST(0), key, FALSE, cv);
243 else if (items == 2){ /* writer */
244 attr = mop_fetch_attr(aTHX_ ST(0), key, TRUE, cv);
245 sv_setsv(attr, ST(1));
248 croak("expected exactly one or two argument");
250 ST(0) = attr ? attr : &PL_sv_undef;
255 XS(mop_xs_simple_reader)
258 MAGIC* const mg = mop_mg_find_by_vtbl(aTHX_ (SV*)cv, &mop_accessor_vtbl);
259 SV* const key = mg->mg_obj;
263 croak("expected exactly one argument");
266 attr = mop_fetch_attr(aTHX_ ST(0), key, FALSE, cv);
267 ST(0) = attr ? attr : &PL_sv_undef;
271 XS(mop_xs_simple_writer)
274 MAGIC* const mg = mop_mg_find_by_vtbl(aTHX_ (SV*)cv, &mop_accessor_vtbl);
275 SV* const key = mg->mg_obj;
279 croak("expected exactly two argument");
282 attr = mop_fetch_attr(aTHX_ ST(0), key, TRUE, cv);
283 sv_setsv(attr, ST(1));
288 XS(mop_xs_simple_clearer)
291 MAGIC* const mg = mop_mg_find_by_vtbl(aTHX_ (SV*)cv, &mop_accessor_vtbl);
292 SV* const key = mg->mg_obj;
296 croak("expected exactly one argument");
299 attr = mop_delete_attr(aTHX_ ST(0), key, cv);
300 ST(0) = attr ? attr : &PL_sv_undef;
305 XS(mop_xs_simple_predicate)
308 MAGIC* const mg = mop_mg_find_by_vtbl(aTHX_ (SV*)cv, &mop_accessor_vtbl);
309 SV* const key = mg->mg_obj;
313 croak("expected exactly one argument");
316 attr = mop_fetch_attr(aTHX_ ST(0), key, FALSE, cv);
317 ST(0) = boolSV(attr); /* exists */
322 XS(mop_xs_simple_predicate_for_metaclass)
325 MAGIC* const mg = mop_mg_find_by_vtbl(aTHX_ (SV*)cv, &mop_accessor_vtbl);
326 SV* const key = mg->mg_obj;
330 croak("expected exactly one argument");
333 attr = mop_fetch_attr(aTHX_ ST(0), key, FALSE, cv);
334 ST(0) = boolSV(attr && SvOK(attr)); /* defined */