[PEAK] Strange dispatch problem after cvs up

[Jay Parlar]

I was finally able to reproduce the problem with a trivial example:


>>> import dispatch
>>> class A:
...  [dispatch.generic()]
...  def make(self, ctrl):
...   '''
...   stuff
...   '''
...  [make_header.when('ctrl == 4')]
...  def make(self, ctrl):
...   print "four"
...
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 7, in A
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 690, in when
    return self._decorate(cond)
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 577, in _deco
rate
    cond = self.parseRule(cond,frame=frame) or cond
  File "<string>", line 10, in parseRule
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 440, in parse
Rule
    return self.parse(rule, frame.f_locals, frame.f_globals)
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 323, in parse

    from dispatch.predicates import CriteriaBuilder
  File "c:\Python24\Lib\site-packages\dispatch\predicates.py", line 722, in ?
    [expressionSignature.when(
  File "c:\Python24\Lib\site-packages\dispatch\predicates.py", line 722, in ?
    [expressionSignature.when(
  File "c:\Python24\Lib\site-packages\protocols\advice.py", line 289, in tracer
    frm.f_locals[k] = callback(frm,k,v,old_locals)
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 597, in regis
terMethod
    self.addMethod(cond,func)
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 559, in addMe
thod
    self[signature] = function
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 421, in __set
item__
    signature = strategy.Signature(
  File "c:\Python24\Lib\site-packages\dispatch\functions.py", line 500, in _disp
atch_id
    self.disp_indexes[disp] = criterion.node_type.make_index()
TypeError: unbound method make_index() must be called with Node instance as firs
t argument (got nothing instead)



This also failed using the regular @ decorator syntax, and with
new-style classes.

However, if I do something like:

>>> import dispatch
>>> class A:
...  [dispatch.on('ctrl')]
...  def make(self, ctrl):
...   '''
...   stuff
...   '''
...  [make_header.when(int)]
...  def make(self, ctrl):
...   print "four"


it works just fine.

Jay P.