[C++-sig] Re: abstract templates and pyste question.

[Nicodemus]

David Abrahams wrote:

>Nicodemus <nicodemus at esss.com.br> writes:
>
>
>>>There are two choices:
>>>
>>> 1. It can be no_init
>>>
>>> 2. PreProcessor_char_Wrapper must define getSize() and getObject()
>>>
>>>Clearly, whatever was generated by pyste does neither of these.
>>>
>>>
>>The Wrapper defines getSize() and getObject(), but not no_init, and
>>this compiles under msvc 6.0. 
>>
>
>I don't see what vc6 has to do with this.  The OP has a compilation
>error indicating that getSize and getObject are not defined in the
>wrapper.
>
>??
>

You're right, I didn't read the error message carefully. But Pyste does 
generate the methods in the wrapper:

struct PreProcessor_float_Wrapper: PreProcessor<float>
{
    PreProcessor_float_Wrapper(PyObject* self_, const 
PreProcessor<float>& p0):
        PreProcessor<float>(p0), self(self_) {}

    PreProcessor_float_Wrapper(PyObject* self_):
        PreProcessor<float>(), self(self_) {}

    const int getSize() {
        return call_method< const int >(self, "getSize");
    }

    float getObject(int p0) {
        return call_method< float >(self, "getObject", p0);
    }

    PyObject* self;
};


// Module 
======================================================================
BOOST_PYTHON_MODULE(temp)
{
    class_< PreProcessor<float>, boost::noncopyable, 
PreProcessor_float_Wrapper >("PreProcessor_float", init<  >())
        .def("getSize", pure_virtual(&PreProcessor<float>::getSize))
        .def("getObject", pure_virtual(&PreProcessor<float>::getObject))
    ;

}
 

And this compiles fine under msvc 6.0. Perhaps the generated code by the 
OP is different?