Class _DescendClassHierarchyImpl
Implement the inverseExtend method.
There are many ways to implement this method. One involves the use of
yield. It doesn't require a callNext parameter, but it is not possible
to use such an implementation in a function that has a return statement
(which Cheetah methods always do, unfortunately). Another involves the use
of a closure. This is elegant, but not viable if you are stuck with an old
version of Python. The implementation here is based on a class that has a
__call__ method and can thus pretend to be a closure. I may switch back to
the closure version of this code once they upgrade the version of Python at
work.
Do not use this class directly, rather use
aquarium.util.InternalLibrary.inverseExtend.
The following private variables are used:
- _obj
- This is the instance that the bound method belongs to.
- _methods
- This will contain the methods from the least senior classes first
because it will be treated as a stack in __call__.
| Method Summary |
| |
__init__(self,
boundMethod)
Build all the necessary data structures. |
| |
__call__(self,
*args,
**kargs)
This is like super(), but it calls the subclass's method. |
__init__(self,
boundMethod)
(Constructor)
Build all the necessary data structures.
-
|