public static IEqualityComparer GetRandomizedEqualityComparer(object comparer)
{
Contract.Assert(comparer == null || comparer == System.Collections.Generic.EqualityComparer <string> .Default || comparer is IWellKnownStringEqualityComparer);
if (comparer == null)
{
return(new System.Collections.Generic.RandomizedObjectEqualityComparer());
}
if (comparer == System.Collections.Generic.EqualityComparer <string> .Default)
{
return(new System.Collections.Generic.RandomizedStringEqualityComparer());
}
IWellKnownStringEqualityComparer cmp = comparer as IWellKnownStringEqualityComparer;
if (cmp != null)
{
return(cmp.GetRandomizedEqualityComparer());
}
Contract.Assert(false, "Missing case in GetRandomizedEqualityComparer!");
return(null);
}
public static object GetEqualityComparerForSerialization(object comparer)
{
if (comparer == null)
{
return(null);
}
IWellKnownStringEqualityComparer wellKnownStringEqualityComparer = comparer as IWellKnownStringEqualityComparer;
if (wellKnownStringEqualityComparer != null)
{
return(wellKnownStringEqualityComparer.GetEqualityComparerForSerialization());
}
return(comparer);
}
public static IEqualityComparer GetRandomizedEqualityComparer(object comparer)
{
if (comparer == null)
{
return(new RandomizedObjectEqualityComparer());
}
if (comparer == EqualityComparer <string> .Default)
{
return(new RandomizedStringEqualityComparer());
}
IWellKnownStringEqualityComparer wellKnownStringEqualityComparer = comparer as IWellKnownStringEqualityComparer;
if (wellKnownStringEqualityComparer != null)
{
return(wellKnownStringEqualityComparer.GetRandomizedEqualityComparer());
}
return(null);
}
