#include "perl.h"
#include "XSUB.h"
+#define NEED_newRV_noinc
#define NEED_sv_2pv_flags
#define NEED_sv_2pv_nolen
#include "ppport.h"
-SV *key_name;
-U32 hash_name;
+#define DECLARE_KEY(name) SV *key_##name; U32 hash_##name;
-SV *key_package;
-U32 hash_package;
+#define PREHASH_KEY_WITH_VALUE(name, value) do { \
+ key_##name = newSVpvs(value); \
+ PERL_HASH(hash_##name, value, sizeof(value) - 1); \
+} while (0)
-SV *key_package_name;
-U32 hash_package_name;
+/* this is basically the same as the above macro, except that the value will be
+ * the stringified name. However, we can't just implement this in terms of
+ * PREHASH_KEY_WITH_VALUE as that'd cause macro expansion on the value of
+ * 'name' when it's being passed to the other macro. suggestions on how to make
+ * this more elegant would be much appreciated */
-SV *key_body;
-U32 hash_body;
+#define PREHASH_KEY(name) do { \
+ key_##name = newSVpvs(#name); \
+ PERL_HASH(hash_##name, #name, sizeof(#name) - 1); \
+} while (0)
-SV* method_metaclass;
-SV* associated_metaclass;
-SV* wrap;
+DECLARE_KEY(name);
+DECLARE_KEY(package);
+DECLARE_KEY(package_name);
+DECLARE_KEY(body);
+DECLARE_KEY(package_cache_flag);
+DECLARE_KEY(methods);
+DECLARE_KEY(VERSION);
+DECLARE_KEY(ISA);
+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 */
+#define check_package_cache_flag(stash) mop_check_package_cache_flag(aTHX_ stash)
+#if PERL_VERSION >= 10
static UV
mop_check_package_cache_flag(pTHX_ HV* stash) {
assert(SvTYPE(stash) == SVt_PVHV);
- return HvMROMETA(stash)->pkg_gen; /* mro::get_pkg_gen($pkg) */
+ /* here we're trying to implement a c version of mro::get_pkg_gen($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 */
static UV
-mop_check_package_cache_flag(pTHX_ HV* stash) {
+mop_check_package_cache_flag(pTHX_ HV *stash) {
PERL_UNUSED_ARG(stash);
assert(SvTYPE(stash) == SVt_PVHV);
#endif
#define call0(s, m) mop_call0(aTHX_ s, m)
-static SV*
-mop_call0(pTHX_ SV* const self, SV* const method) {
+static SV *
+mop_call0(pTHX_ SV *const self, SV *const method) {
dSP;
- SV* ret;
+ SV *ret;
PUSHMARK(SP);
XPUSHs(self);
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;
-
- /* this function massivly overlaps with the xs version of
- * get_all_package_symbols. a common c function to walk the symbol table
- * should be factored out and used by both. --rafl */
+static int
+get_code_info (SV *coderef, char **pkg, char **name)
+{
+ if (!SvOK(coderef) || !SvROK(coderef) || SvTYPE(SvRV(coderef)) != SVt_PVCV) {
+ return 0;
+ }
- hv_iterinit(stash);
- while ( (gv = (GV*)hv_iternextsv(stash, &method_name, &method_name_len)) ) {
- CV* cv;
- switch (SvTYPE (gv)) {
-#ifndef SVt_RV
- case SVt_RV:
+ 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
+ value strikes me as an improvement (mst)
+ */
+#ifdef isGV_with_GP
+ if ( isGV_with_GP(CvGV(coderef)) ) {
#endif
- case SVt_IV:
- case SVt_PV:
- /* 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);
- /* fall through */
- default:
- break;
- }
-
- 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;
- }
+ *pkg = HvNAME( GvSTASH(CvGV(coderef)) );
+ *name = GvNAME( CvGV(coderef) );
+#ifdef isGV_with_GP
+ } else {
+ *pkg = "__UNKNOWN__";
+ *name = "__ANON__";
}
+#endif
+
+ return 1;
}
typedef enum {
while ( (he = hv_iternext(stash)) ) {
STRLEN keylen;
char *key = HePV(he, keylen);
- hv_store(ret, key, keylen, SvREFCNT_inc(HeVAL(he)), 0);
+ if (!hv_store(ret, key, keylen, SvREFCNT_inc(HeVAL(he)), 0)) {
+ croak("failed to store glob ref");
+ }
}
return ret;
if (sv) {
char *key = HePV(he, keylen);
- hv_store(ret, key, keylen, newRV_inc(sv), 0);
+ if (!hv_store(ret, key, keylen, newRV_inc(sv), 0)) {
+ croak("failed to store symbol ref");
+ }
}
}
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;
+ SV *coderef;
+ HV *symbols;
+ dSP;
+
+ symbols = get_all_package_symbols(stash, TYPE_FILTER_CODE);
+
+ (void)hv_iterinit(symbols);
+ while ( (coderef = hv_iternextsv(symbols, &method_name, &method_name_len)) ) {
+ CV *cv = (CV *)SvRV(coderef);
+ char *cvpkg_name;
+ char *cv_name;
+ SV *method_slot;
+ SV *method_object;
+
+ if (!get_code_info(coderef, &cvpkg_name, &cv_name)) {
+ continue;
+ }
+
+ /* 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:
MODULE = Class::MOP PACKAGE = Class::MOP
BOOT:
- key_name = newSVpvs("name");
- key_body = newSVpvs("body");
- key_package = newSVpvs("package");
- key_package_name = newSVpvs("package_name");
-
- PERL_HASH(hash_name, "name", 4);
- PERL_HASH(hash_body, "body", 4);
- PERL_HASH(hash_package, "package", 7);
- PERL_HASH(hash_package_name, "package_name", 12);
+ PREHASH_KEY(name);
+ PREHASH_KEY(body);
+ PREHASH_KEY(package);
+ PREHASH_KEY(package_name);
+ PREHASH_KEY(methods);
+ PREHASH_KEY(ISA);
+ PREHASH_KEY(VERSION);
+ PREHASH_KEY_WITH_VALUE(package_cache_flag, "_package_cache_flag");
method_metaclass = newSVpvs("method_metaclass");
wrap = newSVpvs("wrap");
associated_metaclass = newSVpvs("associated_metaclass");
-PROTOTYPES: ENABLE
-
+PROTOTYPES: DISABLE
+# use prototype here to be compatible with get_code_info from Sub::Identify
void
get_code_info(coderef)
- SV* coderef
- PREINIT:
- char* name;
- char* pkg;
- PPCODE:
- 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
- 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
+ SV *coderef
+ PROTOTYPE: $
+ PREINIT:
+ char *pkg = NULL;
+ char *name = NULL;
+ PPCODE:
+ if (get_code_info(coderef, &pkg, &name)) {
+ EXTEND(SP, 2);
+ PUSHs(newSVpv(pkg, 0));
+ PUSHs(newSVpv(name, 0));
+ }
- EXTEND(SP, 2);
- PUSHs(newSVpvn(pkg, strlen(pkg)));
- PUSHs(newSVpvn(name, strlen(name)));
- }
+void
+is_class_loaded(klass=&PL_sv_undef)
+ SV *klass
+ PREINIT:
+ HV *stash;
+ char *key;
+ I32 keylen;
+ GV *gv;
+ PPCODE:
+ if (!SvPOK(klass) || !SvCUR(klass)) {
+ XSRETURN_NO;
+ }
+ stash = gv_stashsv(klass, 0);
+ if (!stash) {
+ XSRETURN_NO;
+ }
+
+ if (hv_exists_ent (stash, key_VERSION, hash_VERSION)) {
+ HE *version = hv_fetch_ent(stash, key_VERSION, 0, hash_VERSION);
+ if (version && HeVAL(version) && GvSV(HeVAL(version))) {
+ XSRETURN_YES;
+ }
+ }
+
+ if (hv_exists_ent (stash, key_ISA, hash_ISA)) {
+ HE *isa = hv_fetch_ent(stash, key_ISA, 0, hash_ISA);
+ if (isa && HeVAL(isa) && GvAV(HeVAL(isa))) {
+ XSRETURN_YES;
+ }
+ }
+
+ (void)hv_iterinit(stash);
+ while ((gv = (GV *)hv_iternextsv(stash, &key, &keylen))) {
+ if (keylen <= 0) {
+ continue;
+ }
+
+ if (key[keylen - 1] == ':' && key[keylen - 2] == ':') {
+ continue;
+ }
+
+ if (!isGV(gv) || GvCV(gv) || GvSV(gv) || GvAV(gv) || GvHV(gv) || GvIO(gv) || GvFORM(gv)) {
+ XSRETURN_YES;
+ }
+ }
+
+ XSRETURN_NO;
MODULE = Class::MOP PACKAGE = Class::MOP::Package
get_all_package_symbols(self, filter=TYPE_FILTER_NONE)
SV *self
type_filter_t filter
- PROTOTYPE: $;$
PREINIT:
HV *stash = NULL;
HV *symbols = NULL;
void
get_method_map(self)
- SV* self
+ SV *self
PREINIT:
- SV* const class_name = HeVAL( hv_fetch_ent((HV*)SvRV(self), key_package, TRUE, hash_package) );
- HV* const stash = gv_stashsv(class_name, TRUE);
+ HV *const obj = (HV *)SvRV(self);
+ SV *const class_name = HeVAL( hv_fetch_ent(obj, key_package, 0, hash_package) );
+ HV *const stash = gv_stashsv(class_name, 0);
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);
+ SV *const cache_flag = HeVAL( hv_fetch_ent(obj, key_package_cache_flag, TRUE, hash_package_cache_flag));
+ SV *const map_ref = HeVAL( hv_fetch_ent(obj, key_methods, TRUE, hash_methods));
PPCODE:
- if ( ! SvRV(self) ) {
- die("Cannot call get_method_map as a class method");
- }
-
/* 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());
+ 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));
+ if ( !SvOK(cache_flag) || SvUV(cache_flag) != current ) {
+ 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;
}
XPUSHs(map_ref);
-
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