[boost] Boost::Python exception translation not working?

31 Aug 2004

      I attempted a simple exception translation that was almost an exact copy
of the examples in the docs.

struct MySQLException : public std::exception
{
	MySQLException( const char * what = "MySQL Exception" ) :
std::exception( what ) {}
};

And then in a class's default constructor I throw this exception.

I tried exposing it as both a function and a functor:

void mysql_translate( MySQLException& e )
{
	PyErr_SetString( PyExc_RuntimeError, e.what() );
}

BOOST_PYTHON_MODULE(pymysql)
{
	// regular expression translation

	py::register_exception_translator< MySQLException >(
&mysql_translate );
}

And...

struct mysql_translate
{
	void operator ()( const MySQLException& e ) const
	{
		PyErr_SetString( PyExc_RuntimeError, e.what() );
	}	
};

BOOST_PYTHON_MODULE(pymysql)
{
	// regular expression translation

	py::register_exception_translator< MySQLException >(
mysql_translate() );
}

Both had the same result when I created the exported object.
"RuntimeError: unidentifiable C++ exception".

What am I doing wrong?

Thanks,
-Dan