Merged CMOP into Moose

[gitmo/Moose.git] / xs / MOP.xs

diff --git a/xs/MOP.xs b/xs/MOP.xs
new file mode 100644 (file)
index 0000000..c500891
--- /dev/null
+++ b/xs/MOP.xs
@@ -0,0 +1,119 @@
+#include "mop.h"
+
+static bool
+find_method (const char *key, STRLEN keylen, SV *val, void *ud)
+{
+    bool *found_method = (bool *)ud;
+    PERL_UNUSED_ARG(key);
+    PERL_UNUSED_ARG(keylen);
+    PERL_UNUSED_ARG(val);
+    *found_method = TRUE;
+    return FALSE;
+}
+
+static bool
+check_version (SV *klass, SV *required_version)
+{
+    bool ret = 0;
+
+    dSP;
+    ENTER;
+    SAVETMPS;
+    PUSHMARK(SP);
+    EXTEND(SP, 2);
+    PUSHs(klass);
+    PUSHs(required_version);
+    PUTBACK;
+
+    call_method("VERSION", G_DISCARD|G_VOID|G_EVAL);
+
+    SPAGAIN;
+
+    if (!SvTRUE(ERRSV)) {
+        ret = 1;
+    }
+
+    PUTBACK;
+    FREETMPS;
+    LEAVE;
+
+    return ret;
+}
+
+MODULE = Class::MOP   PACKAGE = Class::MOP
+
+PROTOTYPES: DISABLE
+
+# use prototype here to be compatible with get_code_info from Sub::Identify
+void
+get_code_info(coderef)
+    SV *coderef
+    PROTOTYPE: $
+    PREINIT:
+        char *pkg  = NULL;
+        char *name = NULL;
+    PPCODE:
+        SvGETMAGIC(coderef);
+        if (mop_get_code_info(coderef, &pkg, &name)) {
+            EXTEND(SP, 2);
+            mPUSHs(newSVpv(pkg, 0));
+            mPUSHs(newSVpv(name, 0));
+        }
+
+void
+is_class_loaded(klass, options=NULL)
+    SV *klass
+    HV *options
+    PREINIT:
+        HV *stash;
+        bool found_method = FALSE;
+    PPCODE:
+        SvGETMAGIC(klass);
+        if (!(SvPOKp(klass) && SvCUR(klass))) { /* XXX: SvPOK does not work with magical scalars */
+            XSRETURN_NO;
+        }
+
+        stash = gv_stashsv(klass, 0);
+        if (!stash) {
+            XSRETURN_NO;
+        }
+
+        if (options && hv_exists_ent(options, KEY_FOR(_version), HASH_FOR(_version))) {
+            HE *required_version = hv_fetch_ent(options, KEY_FOR(_version), 0, HASH_FOR(_version));
+            if (check_version (klass, HeVAL(required_version))) {
+                XSRETURN_YES;
+            }
+
+            XSRETURN_NO;
+        }
+
+        if (hv_exists_ent (stash, KEY_FOR(VERSION), HASH_FOR(VERSION))) {
+            HE *version = hv_fetch_ent(stash, KEY_FOR(VERSION), 0, HASH_FOR(VERSION));
+            SV *version_sv;
+            if (version && HeVAL(version) && (version_sv = GvSV(HeVAL(version)))) {
+                if (SvROK(version_sv)) {
+                    SV *version_sv_ref = SvRV(version_sv);
+
+                    if (SvOK(version_sv_ref)) {
+                        XSRETURN_YES;
+                    }
+                }
+                else if (SvOK(version_sv)) {
+                    XSRETURN_YES;
+                }
+            }
+        }
+
+        if (hv_exists_ent (stash, KEY_FOR(ISA), HASH_FOR(ISA))) {
+            HE *isa = hv_fetch_ent(stash, KEY_FOR(ISA), 0, HASH_FOR(ISA));
+            if (isa && HeVAL(isa) && GvAV(HeVAL(isa)) && av_len(GvAV(HeVAL(isa))) != -1) {
+                XSRETURN_YES;
+            }
+        }
+
+        mop_get_package_symbols(stash, TYPE_FILTER_CODE, find_method, &found_method);
+        if (found_method) {
+            XSRETURN_YES;
+        }
+
+        XSRETURN_NO;