/// <summary>
/// Creates a new rope representing the empty string.
/// </summary>
public Rope()
{
// we'll construct the empty rope as a clone of an imaginary static empty rope
this.root = RopeNode <T> .emptyRopeNode;
root.CheckInvariants();
}
internal Rope(RopeNode <T> root)
{
this.root = root;
root.CheckInvariants();
}
internal RopeCacheEntry(RopeNode <T> node, int nodeStartOffset)
{
this.node = node;
this.nodeStartIndex = nodeStartOffset;
}
/// <summary>
/// Resets the rope to an empty list.
/// Runs in O(1).
/// </summary>
public void Clear()
{
root = RopeNode <T> .emptyRopeNode;
OnChanged();
}