def assertit(self):
"""Assert the fact within CLIPS."""
data = clips.data.DataObject(self._env)
data.value = list(self._multifield)
if lib.EnvPutFactSlot(self._env, self._fact, ffi.NULL,
data.byref) != 1:
raise CLIPSError(self._env)
super(ImpliedFact, self).assertit()
def __setitem__(self, key, value):
if self.asserted:
raise RuntimeError("Fact already asserted")
data = clips.data.DataObject(self._env)
data.value = value
ret = lib.EnvPutFactSlot(self._env, self._fact,
str(key).encode(), data.byref)
if ret != 1:
if key not in (s.name for s in self.template.slots()):
raise KeyError("'%s' fact has not slot '%s'" %
(self.template.name, key))
raise CLIPSError(self._env)
