def to_constraint(self):
if isinstance(self.args[1],Some):
if self.args[1].if_value() != None:
return And(Implies(self.args[1].args[1],
lg.Exists([self.args[1].args[0]],
And(self.args[1].args[1],Equals(self.args[0],self.args[1].if_value())))),
Or(lg.Exists([self.args[1].args[0]],self.args[1].args[1]),
Equals(self.args[0],self.args[1].else_value())))
return lg.ForAll([self.args[1].args[0]],
Implies(self.args[1].args[1],
lu.substitute(self.args[1].args[1],{self.args[1].args[0]:self.args[0]})))
if is_individual(self.args[0]):
return Equals(*self.args)
return Iff(*self.args)
def standardize_action(self, f, nexvars, name):
nexSet = set()
for n in nexvars:
nexSet.add(n)
self.updated.add(n)
cons = lgu.used_constants(f)
subs = dict()
evars = []
for c in cons:
if c in self.nex:
if c not in nexSet:
subs[c] = self.nex2pre[c]
# elif False and (c not in self.pre):
elif c not in self.pre:
if (not c.sort.dom) and (c.sort != lg.Boolean):
vname = "Vtmp" + c.name
# vname = vname.replace(":", "")
qv = lg.Var(vname, c.sort)
subs[c] = qv
evars.append(qv)
action = f
if len(subs) != 0:
# for k, v in subs.iteritems():
# print("\treplacing %s -> %s in %s" % (k, v, name))
action = lgu.substitute(f, subs)
if len(evars) != 0:
action = lg.Exists(evars, action)
return action