/// <summary>
/// Copies particular labels from the current node to corresponding nodes in another tree
/// </summary>
/// <param name="n">Tree to which to copy labels</param>
/// <param name="labels">Labels to copy</param>
public void CopyLabelsTo(NomBankNode n, params NomBankNodeLabel[] labels)
{
foreach (NomBankNodeLabel label in labels)
{
foreach (NomBankNode fromNode in GetDescendants(label))
{
int startToken = fromNode.FirstToken.TokenNumber;
int endToken = fromNode.LastToken.TokenNumber;
NomBankNode toNode = n.GetLowestCommonAncestorOfTokens(startToken, endToken) as NomBankNode;
toNode.AddLabel(label.Copy(), true);
}
}
}
/// <summary>
/// Applies the current type to a node, or does nothing if the node already has the type
/// </summary>
/// <param name="n">Node to apply type to</param>
private void ApplyType(NomBankNode n)
{
// don't reapply type
if (n.HasLabel(_label))
{
return;
}
// add label without hyphen indexes, and don't bother synching with root collection (this collection will be added to the root)
NomBankNodeLabel label = _label.Copy();
label.HyphenIndexes.Clear();
n.AddLabel(label, false);
// only apply hyphen indexes to text with a hyphen or slash
string nodeText = n.SurfaceText;
char[] hyphenSlash = new char[] { '-', '/' };
if (nodeText.IndexOfAny(hyphenSlash) == -1)
{
return;
}
// try to apply each hyphen index
foreach (NomBankNodeLabel.HyphenationIndex hyphenIndex in _label.HyphenIndexes)
{
int numParts = nodeText.Split(hyphenSlash, StringSplitOptions.RemoveEmptyEntries).Length;
// get numeric hyphen index
int index = int.Parse(hyphenIndex.ToString().Substring(1));
// add index to node's label if applicable
if (index < numParts)
{
if (_appliedIndexes.Contains(hyphenIndex))
{
throw new Exception("Hyphen index applied more than once");
}
label.AddHyphenIndex(hyphenIndex);
_appliedIndexes.Add(hyphenIndex);
}
}
}