--- /dev/null
+#include "mop.h"
+
+void
+mop_call_xs (pTHX_ void (*subaddr) (pTHX_ CV *), CV *cv, SV **mark)
+{
+ dSP;
+ PUSHMARK(mark);
+ (*subaddr)(aTHX_ cv);
+ PUTBACK;
+}
+
+#if PERL_VERSION >= 10
+UV
+mop_check_package_cache_flag (pTHX_ HV *stash)
+{
+ assert(SvTYPE(stash) == SVt_PVHV);
+
+ /* here we're trying to implement a c version of mro::get_pkg_gen($stash),
+ * however the perl core doesn't make it easy for us. It doesn't provide an
+ * api that just does what we want.
+ *
+ * However, we know that the information we want is, inside the core,
+ * available using HvMROMETA(stash)->pkg_gen. Unfortunately, although the
+ * HvMROMETA macro is public, it is implemented using Perl_mro_meta_init,
+ * which is not public and only available inside the core, as the mro
+ * interface as well as the structure returned by mro_meta_init isn't
+ * considered to be stable yet.
+ *
+ * Perl_mro_meta_init isn't declared static, so we could just define it
+ * ourselfs if perls headers don't do that for us, except that won't work
+ * on platforms where symbols need to be explicitly exported when linking
+ * shared libraries.
+ *
+ * So our, hopefully temporary, solution is to be even more evil and
+ * basically reimplement HvMROMETA in a very fragile way that'll blow up
+ * when the relevant parts of the mro implementation in core change.
+ *
+ * :-(
+ *
+ */
+
+ return HvAUX(stash)->xhv_mro_meta
+ ? HvAUX(stash)->xhv_mro_meta->pkg_gen
+ : 0;
+}
+
+#else /* pre 5.10.0 */
+
+UV
+mop_check_package_cache_flag (pTHX_ HV *stash)
+{
+ PERL_UNUSED_ARG(stash);
+ assert(SvTYPE(stash) == SVt_PVHV);
+
+ return PL_sub_generation;
+}
+#endif
+
+SV *
+mop_call0 (pTHX_ SV *const self, SV *const method)
+{
+ dSP;
+ SV *ret;
+
+ PUSHMARK(SP);
+ XPUSHs(self);
+ PUTBACK;
+
+ call_sv(method, G_SCALAR | G_METHOD);
+
+ SPAGAIN;
+ ret = POPs;
+ PUTBACK;
+
+ return ret;
+}
+
+int
+get_code_info (SV *coderef, char **pkg, char **name)
+{
+ if (!SvOK(coderef) || !SvROK(coderef) || SvTYPE(SvRV(coderef)) != SVt_PVCV) {
+ return 0;
+ }
+
+ coderef = SvRV(coderef);
++
++ /* sub is still being compiled */
++ if (!CvGV(coderef)) {
++ return 0;
++ }
++
+ /* I think this only gets triggered with a mangled coderef, but if
+ we hit it without the guard, we segfault. The slightly odd return
+ value strikes me as an improvement (mst)
+ */
+#ifdef isGV_with_GP
+ if ( isGV_with_GP(CvGV(coderef)) ) {
+#endif
+ *pkg = HvNAME( GvSTASH(CvGV(coderef)) );
+ *name = GvNAME( CvGV(coderef) );
+#ifdef isGV_with_GP
+ } else {
+ *pkg = "__UNKNOWN__";
+ *name = "__ANON__";
+ }
+#endif
+
+ return 1;
+}
+
+void
+get_package_symbols (HV *stash, type_filter_t filter, get_package_symbols_cb_t cb, void *ud)
+{
+ HE *he;
+
+ (void)hv_iterinit(stash);
+
+ if (filter == TYPE_FILTER_NONE) {
+ while ( (he = hv_iternext(stash)) ) {
+ STRLEN keylen;
+ const char *key = HePV(he, keylen);
+ if (!cb(key, keylen, HeVAL(he), ud)) {
+ return;
+ }
+ }
+ return;
+ }
+
+ while ( (he = hv_iternext(stash)) ) {
+ SV *const gv = HeVAL(he);
+ SV *sv = NULL;
+ char *key;
+ STRLEN keylen;
+ char *package;
+ SV *fq;
+
+ switch( SvTYPE(gv) ) {
+#ifndef SVt_RV
+ case SVt_RV:
+#endif
+ case SVt_PV:
+ case SVt_IV:
+ /* expand the gv into a real typeglob if it
+ * contains stub functions and we were asked to
+ * return CODE symbols */
+ if (filter == TYPE_FILTER_CODE) {
+ if (SvROK(gv)) {
+ /* we don't really care about the length,
+ but that's the API */
+ key = HePV(he, keylen);
+ package = HvNAME(stash);
+ fq = newSVpvf("%s::%s", package, key);
+ sv = (SV *)get_cv(SvPV_nolen(fq), 0);
+ break;
+ }
+
+ key = HePV(he, keylen);
+ gv_init((GV *)gv, stash, key, keylen, GV_ADDMULTI);
+ }
+ /* fall through */
+ case SVt_PVGV:
+ switch (filter) {
+ case TYPE_FILTER_CODE: sv = (SV *)GvCVu(gv); break;
+ case TYPE_FILTER_ARRAY: sv = (SV *)GvAV(gv); break;
+ case TYPE_FILTER_IO: sv = (SV *)GvIO(gv); break;
+ case TYPE_FILTER_HASH: sv = (SV *)GvHV(gv); break;
+ case TYPE_FILTER_SCALAR: sv = (SV *)GvSV(gv); break;
+ default:
+ croak("Unknown type");
+ }
+ break;
+ default:
+ continue;
+ }
+
+ if (sv) {
+ const char *key = HePV(he, keylen);
+ if (!cb(key, keylen, sv, ud)) {
+ return;
+ }
+ }
+ }
+}
+
+static bool
+collect_all_symbols (const char *key, STRLEN keylen, SV *val, void *ud)
+{
+ HV *hash = (HV *)ud;
+
+ if (!hv_store (hash, key, keylen, newRV_inc(val), 0)) {
+ croak("failed to store symbol ref");
+ }
+
+ return TRUE;
+}
+
+HV *
+get_all_package_symbols (HV *stash, type_filter_t filter)
+{
+ HV *ret = newHV ();
+ get_package_symbols (stash, filter, collect_all_symbols, ret);
+ return ret;
+}
projects / gitmo/Class-MOP.git / commitdiff