/// <summary>
/// Initializes a new instance of the <see cref="TreeNode"/> class.
/// </summary>
/// <param name="parent">
/// Parent node.
/// </param>
/// <param name="content">
/// Content of the this node.
/// </param>
/// <param name="table">
/// Parameters table.
/// </param>
/// <exception cref="ArgumentNullException">
/// Thrown if parent is null.
/// </exception>
public TreeNode(AbstractNode parent, IBaseObject content, PhantomTable table)
{
if (parent == null)
{
throw new ArgumentNullException("parent", "Parent node is null");
}
this.parent = parent;
Level = this.parent.Level + 1;
Volume = table[Level + 1].Volume;
id = content;
StartPosition = table.StartPositions[Level];
}
/// <summary>
/// Initializes a new instance of the <see cref="TreeTop"/> class,
/// representing root element of the tree.
/// </summary>
/// <param name="source">
/// The input chain.
/// </param>
/// <param name="generator">
/// The gen.
/// </param>
public TreeTop(BaseChain source, IGenerator generator)
{
table = new PhantomTable(source);
this.generator = generator;
StartPosition = 0;
Volume = table[0].Volume;
Level = -1;
if ((table[1].Content[0] is ValueString) || (table[1].Content[0] is BaseChain))
{
isString = true;
}
if ((source != null) && (source.GetLength() != 0))
{
var temp = (ValuePhantom)source[0];
for (int i = 0; i < temp.Cardinality; i++)
{
Children.Add(new TreeNode(this, temp[i], table));
}
}
}
/// <summary>
/// Choosing which child will generate next element of sequence.
/// </summary>
/// <param name="result">
/// Intermediate result.
/// </param>
/// <param name="generator">
/// Random numbers generator.
/// </param>
/// <param name="table">
/// Phantom sequence parameters table.
/// </param>
protected void Find(BaseChain result, IGenerator generator, PhantomTable table)
{
// if not leaf node
if (Children.Count != 0)
{
double val = generator.Next();
ulong curVal = 0;
foreach (TreeNode child in Children)
{
curVal += child.Volume;
if (val <= ((double)curVal / Volume))
{
child.FillChain(result, generator, table);
return;
}
}
}
else
{
// if there is no children nodes then generation is done and decrement procedure is started
Decrement();
}
}
/// <summary>
/// Method adds new element into generated sequence.
/// And calls the same method of one of the children if sequence is incomplete.
/// </summary>
/// <param name="result">
/// Generated sequence.
/// </param>
/// <param name="generator">
/// Random number generator.
/// </param>
/// <param name="table">
/// Parameters table.
/// </param>
public void FillChain(BaseChain result, IGenerator generator, PhantomTable table)
{
if ((table.Length != (Level + 2)) && (Children.Count == 0))
{
ValuePhantom temp = table[Level + 2].Content;
for (int i = 0; i < temp.Cardinality; i++)
{
Children.Add(new TreeNode(this, temp[i], table));
}
}
if ((id is BaseChain) || (id is ValueString))
{
string amino = id.ToString();
for (int k = 0; k < amino.Length; k++)
{
result[StartPosition + k] = new ValueString(amino[k]);
}
}
else
{
result[StartPosition] = id;
}
Find(result, generator, table);
}
