/// <summary>
/// Remove puncation from child nodes
/// </summary>
private void removePunctuation()
{
for (int i = 0; i < ChildNodes.Count; ++i)
{
var child = ChildNodes[i];
if (child.TerminalEdge == null)
{
//only terminals can be puncation
continue;
}
if (!Grammar.IsPunctuation(child.TerminalEdge.Match.MatchedData))
{
continue;
}
ChildNodes.RemoveAt(i);
i--;
}
}
