private void AddResult(Type t, IEnumerable <BoxedExpression> newInvariants)
{
IEnumerable <BoxedExpression> prevExpressions;
// We already saw the type, and got top for it
if (this.topInvariants.Contains(t))
{
return;
}
if (this.inferredInvariants.TryGetValue(t, out prevExpressions))
{
if (ExtensionsForComparingSequencesOfBoxedExpression.IncludedIn(newInvariants, prevExpressions))
{
if (newInvariants.Count() == prevExpressions.Count())
{
#if DEBUG
Console.WriteLine("Found the same invariant for {0}", t);
#endif
}
else
{
#if DEBUG
Console.WriteLine("Found a new invariant for {0}", t);
Console.WriteLine("Previous invariant: {0}", ToString(prevExpressions));
#endif
this.HasNewInvariants = true;
this.inferredInvariants[t] = newInvariants;
}
}
else
{
#if DEBUG
Console.WriteLine("Removed invariant for {0}", t);
#endif
this.inferredInvariants.Remove(t);
this.topInvariants.Add(t);
}
}
else
{
#if DEBUG
Console.WriteLine("Found new invariant for {0}", t);
#endif
this.HasNewInvariants = true;
this.inferredInvariants[t] = newInvariants;
}
}
public IEnumerable <BoxedExpression> Join()
{
IEnumerable <BoxedExpression> result = null;
foreach (var c in this.post.Values)
{
if (c == null)
{
continue;
}
if (result != null)
{
var cEnumerable = c.GetEnumerable();
Print("new value to intersect with", cEnumerable);
// result = result.Intersect(cEnumerable);
if (cEnumerable == null)
{
Print("Giving up, intersecting with null", null);
return(null);
}
result = ExtensionsForComparingSequencesOfBoxedExpression.Intersection(result, cEnumerable);
Print("result of the intersection", result);
}
else
{
result = c.GetEnumerable();
Print("First", result);
}
if (result == null || !result.Any())
{
Print("Giving up", null);
return(result);
}
}
return(result);
}