public static PersistentHashMap <K, V> FromTwoNodes(int s, uint h1, PersistentHashMap <K, V> n1, uint h2, PersistentHashMap <K, V> n2)
{
Debug.Assert(h1 != h2);
Debug.Assert(s < TrieMaxShift);
var b1 = Bit(h1, s);
var b2 = Bit(h2, s);
if (b1 < b2)
{
return(new BitmapNodeN <K, V> (b1 | b2, new [] { n1, n2 }));
}
else if (b1 > b2)
{
return(new BitmapNodeN <K, V> (b2 | b1, new [] { n2, n1 }));
}
else
{
return(new BitmapNode1 <K, V> (b1, FromTwoNodes(s + TrieShift, h1, n1, h2, n2)));
}
}
public BitmapNode1(uint b, PersistentHashMap <K, V> n)
{
Bitmap = b;
Node = n;
}