[Pyrex] A problem in generating Python extension types.

[Daehyok Shin]

I am trying to replace complex C structures with Python extension
types generated from PyRex code. My purpose is to create Python
extension types which allows other C programs to access structure
variables inside the extension types.

A problem I met during the development may be best explained with the
following simple example.

---------  C Code --------------------------------
struct child_object {
  int ID;
}

struct parent_object {
  struct child_object *child;
}

----------   PyRex Code  ------------------------
public Child[object child_object, type child_type]:
  cdef public int ID

public Parent[object parent_object, type parent_type]:
  cdef Child child

  def __new__(self)
    self.child = Child() # I got an error message here when compiling
generated C code.

  def __dealloc_(self):
    del self.child

I succeeded in creating the same C structures from the above PyRex
code, but when I compiled the generated C code, I got an error message
because self.child expects a pointer to child_object  but Child()
returns a pointer to PyObject.
Is there any way I can solve this problem so that the extension types
act as a commond data models for both Python programs and C programs.
Thanks in advance.

Shin