Created
October 8, 2017 01:19
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dynamic proxy for wrapped instances
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#!/usr/bin/env python | |
class BaseVector(object): | |
def cross(self, v): | |
print("base vector cross") | |
def dot(self, v): | |
print("base vector dot") | |
def proxy(wrapper, function_list): | |
def inner(cls): | |
for func_name in function_list: | |
def func(self, *largs, **kwargs): | |
print("proxy %s" % func_name) | |
print(" me: %r" % func) | |
wrapped_func = getattr(getattr(self, wrapper), func_name) | |
print(" name: %s" % wrapped_func.__name__) | |
return wrapped_func(*largs, **kwargs) | |
func.__name__ = func_name | |
setattr(cls, func_name, func) | |
print("func: %s" % func_name) | |
print(" id: %s" % id(func)) | |
print(" func repr: %r" % getattr(cls, func_name)) | |
return cls | |
return inner | |
@proxy('_wrapped', ('cross', 'dot')) | |
class Vector(object): | |
def __init__(self, obj): | |
self._wrapped = obj | |
v = Vector(BaseVector()) | |
print("") | |
v.cross(None) | |
print("") | |
v.dot(None) |
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@dcowden
regarding https://github.com/dcowden/cadquery/blob/master/cadquery/freecad_impl/geom.py#L124
Although I'm sure it's possible... I think the code above is a strong argument to avoid auto wrapping.
it would be faaaar to difficult to debug, and customize
anyway, I just wanted to see if I could do it...
apparently the answer is "no"... I still have no idea why the above doesn't work.