manatlan wrote:
> To explain better, here is another code
> class JQueryCaller(object):
> def __init__(self,callback):
> self.__callback=callback
> self._s=[]
>
> def __getattr__(self,name):
> def _caller(*args):
> sargs=["'%s'"%i for i in args]
> self._s.append("%s(%s)"%(name,",".join(sargs)))
> return self
> return _caller
>
> def __call__(self):
> return self.__callback(".".join(self._s))
>
>
> class MyObject(list):
> def __init__(self):
> list.__init__([])
>
> js=property(lambda self:JQueryCaller(self.__add))
>
> def __add(self,j):
> self.append(j)
>
>
> if __name__ == "__main__":
> o=MyObject()
>
> o.js.kiki(12).kuku()()
> o.js.kiki(12).kuku().roro("gfde")()
>
> assert o==["kiki('12').kuku()", "kiki('12').kuku().roro('gfde')"]
> here, it uses the __call__ of JQueryCaller by adding the "()" trick at
> the end ...
>
> I'd really like to have the same result, without the "()" trick, like
> this:
>
> o=MyObject()
>
> o.js.kiki(12).kuku()
> o.js.kiki(12).kuku().roro("gfde")
>
> assert o==["kiki('12').kuku()", "kiki('12').kuku().roro('gfde')"]
You could preallocate slots in MyObject:
from functools import partial
class JQueryCaller(object):
def __init__(self,callback):
self.__callback=callback
self._s=[]
def __getattr__(self,name):
def _caller(*args):
sargs=["'%s'"%i for i in args]
self._s.append("%s(%s)"%(name,",".join(sargs)))
self.__callback(".".join(self._s))
return self
return _caller
class MyObject(list):
def __init__(self):
list.__init__([])
@property
def js(self):
n = len(self)
self.append(None)
return JQueryCaller(partial(self._add, n))
def _add(self, i, j):
self[i] = j
if __name__ == "__main__":
o=MyObject()
o.js.kiki(12).kuku()
o.js.kiki(12).kuku().roro("gfde")
assert o==["kiki('12').kuku()", "kiki('12').kuku().roro('gfde')"]
This will course fail if you try things like
a = o.js.kiki
a(1)
a(2)
Peter
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