[beast/devel: 13/26] BSE: introduce Bse::ImplicitBase for shared_ptr handling

[Tim Janik <timj src gnome org>]

commit f50049831a1dae75ce853723bbf7f18287b1839b
Author: Tim Janik <timj gnu org>
Date:   Sun Oct 12 05:18:25 2014 +0200

    BSE: introduce Bse::ImplicitBase for shared_ptr handling

 bse/Makefile.am |    4 ++--
 bse/bseutils.hh |   17 +++++++++++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)
---
diff --git a/bse/Makefile.am b/bse/Makefile.am
index 195cdf1..983a7c2 100644
--- a/bse/Makefile.am
+++ b/bse/Makefile.am
@@ -304,13 +304,13 @@ GENERATED += bseclientapi.cc
 bseserverapi.hh: $(srcdir)/bseapi.idl $(AUXTYPES_PY)
        $(AM_V_GEN)
        $(Q) ${AIDACC} -x CxxStub -x $(AUXTYPES_PY) -G serverhh -G cppguard=__BST_BSESERVERAPI_HH_ \
-               -G iface-base=BseImplicitBase $< -o xgen-$(@F)
+               -G iface-base=Bse::ImplicitBase $< -o xgen-$(@F)
        $(Q) mv xgen-$(@F) $@
 GENERATED += bseserverapi.hh
 bseserverapi.cc: $(srcdir)/bseapi.idl $(AUXTYPES_PY)
        $(AM_V_GEN)
        $(Q) ${AIDACC} -x CxxStub -x $(AUXTYPES_PY) -G servercc -G cppguard=__BST_BSESERVERAPI_CC_ \
-               -G iface-base=BseImplicitBase $< -o xgen-$(@F)
+               -G iface-base=Bse::ImplicitBase $< -o xgen-$(@F)
        $(Q) patch < patch-bseserverapi.cc.diff
        $(Q) mv xgen-$(@F) $@
 GENERATED += bseserverapi.cc
diff --git a/bse/bseutils.hh b/bse/bseutils.hh
index 69beffd..210d490 100644
--- a/bse/bseutils.hh
+++ b/bse/bseutils.hh
@@ -3,6 +3,23 @@
 #define __BSE_UTILS_H__
 
 #include <bse/bseclientapi.hh>
+#include <rapicorn-core.hh>
+
+namespace Bse {
+
+/// IDL API base class until Rapicorn supports ImplicitBaseP out of the box.
+class ImplicitBase : public virtual Rapicorn::Aida::ImplicitBase,
+                     public virtual std::enable_shared_from_this<ImplicitBase> {
+public:
+  template<class Class, typename std::enable_if<std::is_base_of<ImplicitBase, Class>::value>::type* = 
nullptr>
+  static std::shared_ptr<Class> shared_ptr (Class *object) ///< Wrap ImplicitBase or derived type into a 
std::shared_ptr<>().
+  {
+    return object ? std::shared_ptr<Class> (object->shared_from_this()) : std::shared_ptr<Class>();
+  }
+};
+
+} // Bse
+
 #include <bse/bseserverapi.hh>
 
 #include <bse/bseenums.hh>