public static bool IsEqual(PredicateEdgeBase <TValue> a, PredicateEdgeBase <TValue> b)
{
if (ReferenceEquals(a, b))
{
return(true);
}
if (a.IsFuncPredicate && b.IsFuncPredicate)
{
var aa = (FuncPredicateEdge <TValue>)a;
var bb = (FuncPredicateEdge <TValue>)b;
return(ReferenceEquals(aa.Condition, bb.Condition));
}
if (a.IsComparePredicate && b.IsComparePredicate)
{
var aa = (ComparePredicateEdge <TValue>)a;
var bb = (ComparePredicateEdge <TValue>)b;
return(ReferenceEquals(aa.Comparer, bb.Comparer) && aa.Comparer.Equals(aa.Value, bb.Value));
}
if (a.IsSystemPredicate && b.IsSystemPredicate)
{
if (ReferenceEquals(a, b))
{
return(true);
}
var aa = (SystemPredicateEdge <TValue>)a;
var bb = (SystemPredicateEdge <TValue>)b;
return(!aa.IsUnique && !bb.IsUnique && aa.Name == bb.Name);
}
return(false);
}
public static bool IsEpsilon(PredicateEdgeBase <TValue> a)
{
return(a.IsSystemPredicate);
}
