xo-gc xo-alloc2: move Collector faceet gc/ -> alloc2/ for levelling

include/xo/alloc2/GCObject.hpp

@@ -0,0 +1,47 @@
+/** @file GCObject.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/GCObject.json5]
+ *  2. jinja2 template for facet .hpp file:
+ *       [facet.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/GCObject.json5]
+ **/
+
+#pragma once
+
+#include "gc/AGCObject.hpp"
+#include "gc/IGCObject_Any.hpp"
+#include "gc/IGCObject_Xfer.hpp"
+#include "gc/RGCObject.hpp"
+
+namespace xo {
+    namespace mm {
+        /** defined here to avoid #include cycle, since
+         *  template obj<AGCObject,DRepr> awkward to make available there
+         **/
+        template <typename Object>
+        template <typename DRepr>
+        void
+        RCollector<Object>::forward_inplace(xo::facet::obj<AGCObject,DRepr> * p_obj)
+        {
+            this->forward_inplace(p_obj->iface(), (void **)&(p_obj->data_));
+        }
+
+        template <typename Object>
+        template <typename DRepr>
+        void
+        RCollector<Object>::forward_inplace(DRepr ** p_repr)
+        {
+            // fetch static interface for DRepr
+            auto iface = xo::facet::impl_for<AGCObject,DRepr>();
+
+            this->forward_inplace(&iface, (void **)p_repr);
+        }
+    }
+}
+
+/* end GCObject.hpp */