def transform_Implies(self, node):
new_a = self.transform(node.a)
new_b = self.transform(node.b)
return ir.Disjunction(ir.Complement(new_a), new_b)
def transform_Forall(self, node: Forall):
var_refs, conds = unzip(
map(extract_var_cond, map(self.transform, node.var_preds)))
return ir.Complement(
ir.Exists(var_refs, conds,
ir.Complement(self.transform(node.pred))))
def transform_Complement(self, node):
return ir.Complement(self.transform(node.a))
def transform_NotEquals(self, node):
return ir.Complement(self.transform(Equals(node.a, node.b)))