def factory(func):
args, vargs, vkeys, defaults = spec = cgetargspec(func)
names = set(list(args) + [vargs, vkeys])
n, _join, csg = 'cs_str', ''.join, dict(__builtin__.__dict__)
csg.update(self.connect_settings.get('globals', {}))
# Find name that is unbound
while n in names or n in csg:
n = _join(n, '_')
# Pre-compile expression into a code object
csg[n] = compile_str(s.strip(), __file__, 'eval')
# Build a new function
code_args = args + [v for v in (vargs, vkeys) if v != None]
fcode = Code(CodeList(), (), code_args, bool(vargs), bool(vkeys), True, 'whenfunc', '<dyn>', 1, None)
fcode.code[:] = ([(SetLineno, 2), (LOAD_GLOBAL, 'bool'), (LOAD_GLOBAL, 'eval'),
(LOAD_GLOBAL, n), (CALL_FUNCTION, 1), (CALL_FUNCTION, 1),
(RETURN_VALUE, None)])
whenfunc = newfunction(fcode.to_code(), csg, 'whenfunc', default_argvals(args, defaults))
self._vars['settings']['weakcondf'] = False
return condfunc(whenfunc)(func)
def factory(func):
args, vargs, vkeys, defaults = cgetargspec(func)
names = set(list(args) + [vargs, vkeys])
n, sn, _join, csg = 'cs_str', 'cs_stop_str', ''.join, dict(__builtin__.__dict__)
csg['StopCascade'] = StopCascade
csg.update(self.connect_settings.get('globals', {}))
# Find names that are unbound
while n in names or n in csg:
n = _join(n, '_')
while sn in names or sn in csg:
sn = _join(sn, '_')
# Pre-compile expression into a code object
csg[n] = compile_str(s.strip(), '<dynamic cascade expression>', 'eval')
csg[sn] = (stop if not isinstance(stop, basestring)
else compile_str(str(stop).strip(), '<dynamic cascade stop condition>', 'eval'))
# Build a new function:
# def cascadefunc(*args, **kwargs): # Not really, dynamically generate args
# ret = bool(eval(s))
# if isinstance(stop, basestring):
# stop = eval(stop)
# if bool(stop):
# raise StopCascade(ret)
# return ret
code_args = args + [v for v in (vargs, vkeys) if v != None]
fcode = Code(CodeList(), (), code_args, bool(vargs), bool(vkeys), True, 'cascadefunc', '<dynamic cascade function>', 1, None)
labels = map(lambda i: Label(), xrange(4))
fcode.code[:] = ([(SetLineno, 2),
(LOAD_GLOBAL, 'bool'),
(LOAD_GLOBAL, 'eval'),
(LOAD_GLOBAL, n),
(CALL_FUNCTION, 1),
(CALL_FUNCTION, 1),
(STORE_FAST, 'ret'),
(SetLineno, 3),
(LOAD_GLOBAL, sn),
(STORE_FAST, 'stop'),
(SetLineno, 4),
(LOAD_GLOBAL, 'isinstance'),
(LOAD_FAST, 'stop'),
(LOAD_GLOBAL, 'basestring'),
(CALL_FUNCTION, 2),
(JUMP_IF_FALSE, labels[0]),
(POP_TOP, None),
(SetLineno, 5),
(LOAD_GLOBAL, 'eval'),
(LOAD_FAST, 'stop'),
(CALL_FUNCTION, 1),
(STORE_FAST, 'stop'),
(JUMP_FORWARD, labels[1]),
(labels[0], None),
(POP_TOP, None),
(labels[1], None),
(SetLineno, 6),
(LOAD_FAST, 'stop'),
(JUMP_IF_FALSE, labels[2]),
(POP_TOP, None),
(SetLineno, 7),
(LOAD_GLOBAL, 'StopCascade'),
(LOAD_FAST, 'ret'),
(CALL_FUNCTION, 1),
(RAISE_VARARGS, 1),
(JUMP_FORWARD, labels[3]),
(labels[2], None),
(POP_TOP, None),
(SetLineno, 8),
(labels[3], None),
(LOAD_FAST, 'ret'),
(RETURN_VALUE, None)])
cascadefunc = newfunction(fcode.to_code(), csg, 'cascadefunc', default_argvals(args, defaults))
self._vars['settings']['weakcondf'] = False
return condfunc(cascadefunc)(func)
