def addGroupCardConstraints(self):
self.upperGCard = self.element.gcard.interval[1].value
self.lowerGCard = self.element.gcard.interval[0].value
if (len(self.fields) == 0
and ((not self.superSort) or self.superSort.fields == 0)):
return
#lower bounds
if not self.fields:
return # front end is broken
if self.lowerGCard == 0 and self.upperGCard == -1:
return
for i in range(self.numInstances):
bigSumm = SMTLib.SMT_IntConst(0)
for j in self.fields:
bigSumm = SMTLib.SMT_Plus(bigSumm, j.summs[i])
#**** LEAVE THIS CODE ****
#don't include inherited fields for now
#if self.superSort:
# for j in self.superSort.fields:
# print("found " + str(j))
# bigSumm = bigSumm + j.summs[i + self.indexInSuper]
if self.lowerGCard != 0:
self.constraints.addGroupCardConstraint(
SMTLib.SMT_Implies(
self.isOn(i),
SMTLib.SMT_GE(bigSumm,
SMTLib.SMT_IntConst(self.lowerGCard))))
if self.upperGCard != -1:
self.constraints.addGroupCardConstraint(
SMTLib.SMT_Implies(
self.isOn(i),
SMTLib.SMT_LE(bigSumm,
SMTLib.SMT_IntConst(self.upperGCard))))
def op_add(left, right):
'''
:param left:
:type left: :class:`~IntArg`
:param right:
:type right: :class:`~IntArg`
:returns: :class:`~IntArg`
Returns left + right.
'''
assert isinstance(left, ExprArg)
assert isinstance(right, ExprArg)
lval = left.getInts()
lval = [SMTLib.createIf(c, e, SMTLib.SMT_IntConst(0)) for (e, c) in lval]
lval = SMTLib.createSum(lval)
rval = right.getInts()
rval = [SMTLib.createIf(c, e, SMTLib.SMT_IntConst(0)) for (e, c) in rval]
rval = SMTLib.createSum(rval)
return IntArg(SMTLib.SMT_Plus(lval, rval))
