public WT_Inner(WT_Inner parent, bool building)
: base(parent)
{
if (building) {
this.B = new FakeBitmap ();
}
this.Left = null;
this.Right = null;
}
public WT_Leaf(WT_Inner parent, int symbol)
: base(parent)
{
// this.Count = 1;
this.Symbol = symbol;
}
void Walk(WT_Inner node,
Func<WT_Inner, object> preorder,
Func<WT_Inner, object> inorder,
Func<WT_Inner, object> postorder)
{
if (node == null) {
return;
}
if (preorder != null) {
preorder (node);
}
this.Walk (node.Left as WT_Inner, preorder, inorder, postorder);
if (inorder != null) {
inorder (node);
}
this.Walk (node.Right as WT_Inner, preorder, inorder, postorder);
if (postorder != null) {
postorder (node);
}
}
WT_Node LoadNode(BinaryReader Input, WT_Inner parent)
{
// Console.WriteLine ("xxxxxxxxx LoadNode");
var isInner = Input.ReadBoolean ();
if (isInner) {
var node = new WT_Inner (parent, false);
node.B = GenericIO<Bitmap>.Load (Input);
var hasLeft = Input.ReadBoolean ();
if (hasLeft) {
node.Left = this.LoadNode (Input, node);
}
var hasRight = Input.ReadBoolean ();
if (hasRight) {
node.Right = this.LoadNode (Input, node);
}
return node;
} else {
// var count = Input.ReadInt32 ();
var symbol = Input.ReadInt32 ();
// Console.WriteLine ("--leaf> count: {0}, symbol: {1}", count, symbol);
//var leaf = new WT_Leaf (parent, symbol, count);
var leaf = new WT_Leaf (parent, symbol);
this.Alphabet[symbol] = leaf;
return leaf;
}
}
void FinishBuild(WT_Inner node)
{
if (node == null) {
return;
}
node.B = this.BitmapBuilder(node.B as FakeBitmap);
this.FinishBuild (node.Left as WT_Inner);
this.FinishBuild (node.Right as WT_Inner);
}
public void Load(BinaryReader Input)
{
var size = Input.ReadInt32 ();
this.Alphabet = new WT_Leaf[size];
this.Coder = IEncoder32GenericIO.Load (Input);
// Console.WriteLine ("Input.Position: {0}", Input.BaseStream.Position);
this.Root = this.LoadNode (Input, null) as WT_Inner;
}
public void Build(IList<int> text, int alphabet_size, IIEncoder32 coder = null)
{
this.Alphabet = new WT_Leaf[alphabet_size];
this.Root = new WT_Inner (null, true);
if (coder == null) {
coder = new BinaryCoding(ListIFS.GetNumBits(alphabet_size-1));
}
this.Coder = coder;
for (int i = 0; i < text.Count; i++) {
this.Add (text [i]);
}
this.FinishBuild (this.Root);
}