public static IExpression SpecializeToSmallestType(this IExpression e)
{
if (e.Types.Count() == 1)
{
return(e);
}
Type smallest = null;
foreach (var t in e.Types)
{
if (smallest == null)
{
smallest = t;
continue;
}
var smallestIsSuperset = smallest.IsSuperSet(t);
if (!t.IsSuperSet(smallest) && !smallestIsSuperset)
{
// Neither one is smaller then the other, we can not compare them
return(e);
}
if (smallestIsSuperset)
{
smallest = t;
}
}
return(e.Specialize(new[] { smallest }));
}
public static IExpression Specialize(this IExpression e, Type t)
{
if (t == null)
{
throw new NullReferenceException("Cannot specialize to null");
}
return(e.Specialize(new[] { t }));
}
public Constant(Type t, object o)
{
Types = new List <Type> {
t
};
if (o is IEnumerable <IExpression> enumerable)
{
o = enumerable.ToList();
if (enumerable.Any(x => x == null))
{
throw new NullReferenceException("Some subexpression is null");
}
}
_o = o;
}