private static string OperatorFor(ADomains index)
{
Contract.Ensures(Contract.Result <string>() != null);
Contract.Assert(index >= 0);
Contract.Assert((int)index < WeaklyRelationalDomainsCount);
switch (index)
{
case ADomains.Equalities:
return("=");
case ADomains.DisEqualities:
return("!=");
case ADomains.StrictUpperBounds:
return("<");
case ADomains.WeakUpperBounds:
return("<=");
case ADomains.Existential:
return("E");
default:
{
Contract.Assert(false); // should be unreachable
return("");
}
}
}
public NonRelationalValueAbstraction <Variable, Expression> Update(ADomains what, SetOfConstraints <Variable> value)
{
#region Contracts
Contract.Requires(value != null);
Contract.Ensures(Contract.Result <NonRelationalValueAbstraction <Variable, Expression> >() != null);
Contract.Assert(Enum.IsDefined(typeof(ADomains), what));
#endregion
var copy = new SetOfConstraints <Variable> [weaklyRelationalDomains.Length];
Array.Copy(weaklyRelationalDomains, copy, weaklyRelationalDomains.Length);
copy[(int)what] = value;
return(new NonRelationalValueAbstraction <Variable, Expression>(disInterval, symbolicConditions, copy));
}
