Added method to take care of the details of ownership transfer to C++.

Simple ownership transference, i.e. without parenting, is now performed
by the new BindingManager::transferOwnershipToCpp method. It remove the
parent of the transfered object and proceeds transfer or invalidation
if needed. The generated code for simple ownership transfer from Python
to C++ now reflects this change.

Fixed the method BlackBox::keepObjectType that steals an ObjectType
ownership to C++ to remove it from its parent also. The BlackBox
class does not take care of the stolen object as a proper parent
would, but its destructor deletes the object, so the "unparenting"
is needed to avoid freeing the same memory twice.

Created an unit test that adds children to a parent ObjectType and then
steal the children to C++ with BlackBox.keepObjectType.

Reviewed by Hugo Lima <hugo.lima@openbossa.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/libshiboken/bindingmanager.cpp b/libshiboken/bindingmanager.cpp
index 3610e2907..8c8be3e46 100644
--- a/libshiboken/bindingmanager.cpp
+++ b/libshiboken/bindingmanager.cpp
@@ -153,5 +153,16 @@ void BindingManager::invalidateWrapper(const void* cptr)
         invalidateWrapper(iter->second);
 }
 
+void BindingManager::transferOwnershipToCpp(PyBaseWrapper* wrapper)
+{
+    if (wrapper->parentInfo)
+        Shiboken::removeParent(wrapper);
+
+    if (PyBaseWrapper_containsCppWrapper(wrapper))
+        PyBaseWrapper_setOwnership(wrapper, false);
+    else
+        invalidateWrapper(wrapper);
+}
+
 } // namespace Shiboken