/// <summary>
/// get the operator node matching to the data
/// </summary>
/// <param name="data">data making up the operator</param>
/// <returns>node matching the operator data</returns>
public OperatorNode Get(string data)
{
if (string.IsNullOrEmpty(data))
{
throw new ArgumentNullException(nameof(data));
}
OperatorNode node = root;
foreach (char character in data)
{
OperatorNode child = node[character];
if (child == null)
{
return(null);
}
node = child;
}
return(node);
}
/// <summary>
/// adds an operator to the tree
/// </summary>
/// <param name="data">data identifying the operator</param>
/// <param name="op">operator type</param>
public void Add(string data, Operator op)
{
if (string.IsNullOrEmpty(data))
{
throw new ArgumentNullException(nameof(data));
}
OperatorNode node = root;
foreach (char character in data)
{
OperatorNode child = node[character];
if (child == null)
{
node[character] = child = new OperatorNode(character);
}
node = child;
}
node.Operator = op;
}