[C++-sig] wrapping abstract classes question (original) (raw)

Roman Yakovenko roman.yakovenko at gmail.com
Sun Dec 4 13:36:47 CET 2005

Hi. What is the right way to wrap next abstract classes?

struct base{ virtual int do_smth() = 0; };

struct derived : base{ virtual int do_smth_else() = 0; };

It is obvious to me that I should create wrapper classes for base and derived. My question is what is definition of derived wrapper?

struct base_wrapper : base, boost::python::wrapper< base > { ... }

The are 2 approaches to create wrapper for derived class 1.

struct derived_wrapper : derived, boost::python::wrapper< derived >{

virtual int do_smth( ){ boost::python::override do_smth = this->get_override( "do_smth" ); return do_smth( ); }

virtual int do_smth_else( ){ boost::python::override do_smth_else = this->get_override( "do_smth_else" ); return do_smth_else( ); }

}

struct derived_wrapper : derived, base_wrapper, boost::python::wrapper< derived >{

virtual int do_smth_else( ){ boost::python::override do_smth_else = this->get_override( "do_smth_else" ); return do_smth_else( ); }

}

It seems to me that both approaches will work, but I do not know which one is better ( right ) and which one is not.

Thanks for help.

Roman Yakovenko