Re: [pygccxml-development] Implicit virtual functions in derived classes

[Roman Y. <rom...@gm...>]

On Fri, Feb 15, 2008 at 3:22 AM, Julian Scheid <jul...@rs...> wrote:
> Hi,
>
>  I ran into the following problem with Py++ 0.9.0.
>
> Consider this class hierarchy:
>
>  class A
>  {
>    public:
>     virtual void foo() {}
>  };
>
>  class B: public A
>  {
>  };
>
>
>  This will not generate a wrapper for B even though B inherits A's
>  virtual function. Now if I have the following Python code:
>
>  class C(B):
>         def foo(self):
>                 print "C.foo"
>
>  ... then when foo() is invoked on this instance on the C++ side of
>  things, the Python code won't be executed as the wrapper is missing.
>
>  I managed to force generation of a wrapper for B, but even then it won't
>  generate the necessary override code (virtual void foo, void
>  default_foo, and the registration code.)
>
>  My workaround is currently to manually add any implicit virtual
>  functions that I need to override, but this is cumbersome and
>  error-prone. Is there a way to configure or patch Py++ so that this is
>  not necessary?

Thank you very much for bug reporting. Few minutes ago I committed fix
and added new test case.

The whole revision content:
http://pygccxml.svn.sourceforge.net/viewvc/pygccxml?view=rev&revision=1238

The fix:
http://pygccxml.svn.sourceforge.net/viewvc/pygccxml/pyplusplus_dev/pyplusplus/decl_wrappers/class_wrapper.py?r1=1238&r2=1237&pathrev=1238

I tested the fix again Py++ 0.9.5, but I guess it will also work for
your version too.

-- 
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/