#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 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);
+ /* 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;
+}
+
+typedef enum {
+ TYPE_FILTER_NONE,
+ TYPE_FILTER_CODE,
+ TYPE_FILTER_ARRAY,
+ TYPE_FILTER_IO,
+ TYPE_FILTER_HASH,
+ TYPE_FILTER_SCALAR,
+} type_filter_t;
+
+static HV *
+get_all_package_symbols(HV *stash, type_filter_t filter)
+{
+ HE *he;
+ HV *ret = newHV();
+
+ (void)hv_iterinit(stash);
+
+ if (filter == TYPE_FILTER_NONE) {
+ while ( (he = hv_iternext(stash)) ) {
+ STRLEN keylen;
+ char *key = HePV(he, keylen);
+ if (!hv_store(ret, key, keylen, SvREFCNT_inc(HeVAL(he)), 0)) {
+ croak("failed to store glob ref");
+ }
+ }
+
+ return ret;
+ }
+
+ 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) {
+ char *key = HePV(he, keylen);
+ 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;
+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;
+ SV *coderef;
+ HV *symbols;
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);
+ 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;
}
- 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;
- }
+ /* 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_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;
}
+
+ 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
void
-get_all_package_symbols(self, ...)
+get_all_package_symbols(self, filter=TYPE_FILTER_NONE)
SV *self
- PROTOTYPE: $;$
+ type_filter_t filter
PREINIT:
HV *stash = NULL;
- SV *type_filter = NULL;
+ HV *symbols = NULL;
register HE *he;
PPCODE:
if ( ! SvROK(self) ) {
die("Cannot call get_all_package_symbols as a class method");
}
- switch (GIMME_V) {
- case G_VOID: return; break;
- case G_SCALAR: ST(0) = &PL_sv_undef; return; break;
+ if (GIMME_V == G_VOID) {
+ XSRETURN_EMPTY;
}
- if ( items > 1 ) type_filter = ST(1);
PUTBACK;
- if ( (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)) )
- stash = gv_stashsv(HeVAL(he),0);
-
- if (stash) {
-
- (void)hv_iterinit(stash);
-
- if ( type_filter && SvPOK(type_filter) ) {
- const char *const type = SvPV_nolen(type_filter);
-
- while ( (he = hv_iternext(stash)) ) {
- SV *const gv = HeVAL(he);
- SV *sv = NULL;
- char *key;
- STRLEN keylen;
- char *package;
- SV *fq;
-
- switch( SvTYPE(gv) ) {
- 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 (*type == 'C') {
- key = HePV(he, keylen);
- gv_init((GV *)gv, stash, key, keylen, GV_ADDMULTI);
- }
- /* fall through */
- case SVt_PVGV:
- switch (*type) {
- case 'C': sv = (SV *)GvCVu(gv); break; /* CODE */
- case 'A': sv = (SV *)GvAV(gv); break; /* ARRAY */
- case 'I': sv = (SV *)GvIO(gv); break; /* IO */
- case 'H': sv = (SV *)GvHV(gv); break; /* HASH */
- case 'S': sv = (SV *)GvSV(gv); break; /* SCALAR */
- default:
- croak("Unknown type %s\n", type);
- }
- break;
- case SVt_RV:
- /* BAH! constants are horrible */
-
- if ( ! SvROK(gv) ) {
- continue;
- }
-
- /* 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;
- default:
- continue;
- }
+ if ( (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)) ) {
+ stash = gv_stashsv(HeVAL(he), 0);
+ }
- if (sv) {
- SV *key = hv_iterkeysv(he);
- SPAGAIN;
- EXTEND(SP, 2);
- PUSHs(key);
- PUSHs(sv_2mortal(newRV_inc(sv)));
- PUTBACK;
- }
- }
- } else {
- EXTEND(SP, HvKEYS(stash) * 2);
-
- while ( (he = hv_iternext(stash)) ) {
- SV *key = hv_iterkeysv(he);
- SV *sv = HeVAL(he);
- SPAGAIN;
- PUSHs(key);
- PUSHs(sv);
- PUTBACK;
- }
+
+ if (!stash) {
+ switch (GIMME_V) {
+ case G_SCALAR: XSRETURN_UNDEF; break;
+ case G_ARRAY: XSRETURN_EMPTY; break;
}
+ }
+
+ symbols = get_all_package_symbols(stash, filter);
+ switch (GIMME_V) {
+ case G_SCALAR:
+ PUSHs(sv_2mortal(newRV_inc((SV *)symbols)));
+ break;
+ case G_ARRAY:
+ warn("Class::MOP::Package::get_all_package_symbols in list context is deprecated. use scalar context instead.");
+
+ EXTEND(SP, HvKEYS(symbols) * 2);
+
+ while ((he = hv_iternext(symbols))) {
+ PUSHs(hv_iterkeysv(he));
+ PUSHs(sv_2mortal(SvREFCNT_inc(HeVAL(he))));
+ }
+
+ break;
+ default:
+ break;
}
+ SvREFCNT_dec((SV *)symbols);
+
void
name(self)
SV *self
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);
-
projects / gitmo/Class-MOP.git / blobdiff