-
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
SV *key_body;
U32 hash_body;
+SV* method_metaclass;
+SV* associated_metaclass;
+SV* wrap;
+
+
+#define check_package_cache_flag(stash) mop_check_package_cache_flag(aTHX_ stash)
+#ifdef HvMROMETA /* 5.10.0 */
+
+#ifndef mro_meta_init
+#define mro_meta_init(stash) Perl_mro_meta_init(aTHX_ stash) /* used in HvMROMETA macro */
+#endif /* !mro_meta_init */
+
+static UV
+mop_check_package_cache_flag(pTHX_ HV* stash) {
+ assert(SvTYPE(stash) == SVt_PVHV);
+
+ return HvMROMETA(stash)->pkg_gen; /* mro::get_pkg_gen($pkg) */
+}
+
+#else /* pre 5.10.0 */
+
+static UV
+mop_check_package_cache_flag(pTHX_ HV* stash) {
+ PERL_UNUSED_ARG(stash);
+ assert(SvTYPE(stash) == SVt_PVHV);
+
+ return PL_sub_generation;
+}
+#endif
+
+#define call0(s, m) mop_call0(aTHX_ s, m)
+static SV*
+mop_call0(pTHX_ SV* const self, SV* const method) {
+ dSP;
+ SV* ret;
+
+ PUSHMARK(SP);
+ XPUSHs(self);
+ PUTBACK;
+
+ call_sv(method, G_SCALAR | G_METHOD);
+
+ SPAGAIN;
+ ret = POPs;
+ PUTBACK;
+
+ return ret;
+}
+
+static void
+mop_update_method_map(pTHX_ SV* const self, SV* const class_name, HV* const stash, HV* const map) {
+ const char* const class_name_pv = HvNAME(stash); /* must be HvNAME(stash), not SvPV_nolen_const(class_name) */
+ SV* method_metaclass_name;
+ char* method_name;
+ I32 method_name_len;
+ GV* gv;
+ dSP;
+
+ hv_iterinit(stash);
+ while((gv = (GV*)hv_iternextsv(stash, &method_name, &method_name_len))) {
+ CV* cv;
+ if ( SvROK(gv) ) {
+ /* rafl says that this wastes memory savings that GvSVs have
+ in 5.8.9 and 5.10.x. But without it some tests fail. rafl
+ says the right thing to do is to handle GvSVs differently
+ here. */
+ gv_init((GV*)gv, stash, method_name, method_name_len, GV_ADDMULTI);
+ }
+
+ if ( SvTYPE(gv) == SVt_PVGV && (cv = GvCVu(gv)) ) {
+ GV* const cvgv = CvGV(cv);
+ /* ($cvpkg_name, $cv_name) = get_code_info($cv) */
+ const char* const cvpkg_name = HvNAME(GvSTASH(cvgv));
+ const char* const cv_name = GvNAME(cvgv);
+ SV* method_slot;
+ SV* method_object;
+
+ /* this checks to see that the subroutine is actually from our package */
+ if ( !(strEQ(cvpkg_name, "constant") && strEQ(cv_name, "__ANON__")) ) {
+ if ( strNE(cvpkg_name, class_name_pv) ) {
+ continue;
+ }
+ }
+
+ method_slot = *hv_fetch(map, method_name, method_name_len, TRUE);
+ if ( SvOK(method_slot) ) {
+ SV* const body = call0(method_slot, key_body); /* $method_object->body() */
+ if ( SvROK(body) && ((CV*) SvRV(body)) == cv ) {
+ continue;
+ }
+ }
+
+ method_metaclass_name = call0(self, method_metaclass); /* $self->method_metaclass() */
+
+ /*
+ $method_object = $method_metaclass->wrap(
+ $cv,
+ associated_metaclass => $self,
+ package_name => $class_name,
+ name => $method_name
+ );
+ */
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ EXTEND(SP, 8);
+ PUSHs(method_metaclass_name); /* invocant */
+ mPUSHs(newRV_inc((SV*)cv));
+ PUSHs(associated_metaclass);
+ PUSHs(self);
+ PUSHs(key_package_name);
+ PUSHs(class_name);
+ PUSHs(key_name);
+ mPUSHs(newSVpv(method_name, method_name_len));
+ PUTBACK;
+
+ call_sv(wrap, G_SCALAR | G_METHOD);
+ SPAGAIN;
+ method_object = POPs;
+ PUTBACK;
+ /* $map->{$method_name} = $method_object */
+ sv_setsv(method_slot, method_object);
+
+ FREETMPS;
+ LEAVE;
+ }
+ }
+}
+
+
/*
get_code_info:
Pass in a coderef, returns:
PERL_HASH(hash_package, "package", 7);
PERL_HASH(hash_package_name, "package_name", 12);
+ method_metaclass = newSVpvs("method_metaclass");
+ wrap = newSVpvs("wrap");
+ associated_metaclass = newSVpvs("associated_metaclass");
+
PROTOTYPES: ENABLE
char* name;
char* pkg;
PPCODE:
- if( SvOK(coderef) && SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV){
+ if( SvOK(coderef) && SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV) {
coderef = SvRV(coderef);
/* I think this only gets triggered with a mangled coderef, but if
we hit it without the guard, we segfault. The slightly odd return
XPUSHs(HeVAL(he));
else
ST(0) = &PL_sv_undef;
+
+
+MODULE = Class::MOP PACKAGE = Class::MOP::Class
+
+void
+get_method_map(self)
+ SV* self
+INIT:
+ if ( !SvRV(self) ) {
+ die("Cannot call get_method_map as a class method");
+ }
+CODE:
+ HE* const he = hv_fetch_ent((HV*)SvRV(self), key_package, TRUE, hash_package); /* $self->name() */
+ SV* const class_name = HeVAL(he);
+ HV* const stash = gv_stashsv(class_name, TRUE);
+ UV const current = check_package_cache_flag(stash);
+ SV* const cache_flag = *hv_fetchs((HV*)SvRV(self), "_package_cache_flag", TRUE);
+ SV* const map_ref = *hv_fetchs((HV*)SvRV(self), "methods", TRUE);
+
+ /* in $self->{methods} does not yet exist (or got deleted) */
+ if ( ! (SvROK(map_ref) && SvTYPE(SvRV(map_ref)) == SVt_PVHV) ) {
+ SV* new_map_ref = newRV_noinc((SV*)newHV());
+ sv_2mortal(new_map_ref);
+ sv_setsv(map_ref, new_map_ref);
+ }
+
+ if ( ! (SvOK(cache_flag) && SvUV(cache_flag) == current) ) {
+ ENTER;
+ SAVETMPS;
+
+ mop_update_method_map(aTHX_ self, class_name, stash, (HV*)SvRV(map_ref));
+ sv_setuv(cache_flag, check_package_cache_flag(stash)); /* update_cache_flag() */
+
+ FREETMPS;
+ LEAVE;
+ }
+ ST(0) = map_ref; /* map_ref is already mortal */
projects / gitmo/Class-MOP.git / commitdiff