/// <summary>
/// Adds a label to this node
/// </summary>
/// <param name="label">Label to add</param>
/// <param name="syncWithRootNodeCollection">Whether or not to add this node to the corresponding node collection on the root. The
/// root collections are shortcut collections that allow quick searching for particular node types. Thus, the collections need to
/// remain synchronized with the labels that are applied to the nodes. Passing true here will perform this synchronization. If you
/// will do the synchronization on your own later, pass false.</param>
public void AddLabel(NomBankNodeLabel label, bool syncWithRootNodeCollection)
{
_labels.Add(label);
// add node to root's collection if needed
if (syncWithRootNodeCollection)
{
GetLabeledNodeCollection(label, true).AddSingleNode(this);
}
}
/// <summary>
/// Gets a deep copy of this label
/// </summary>
/// <returns>Deep copy of this label</returns>
public NomBankNodeLabel Copy()
{
NomBankNodeLabel copied = new NomBankNodeLabel(_type, _feature, _confidence);
foreach (HyphenationIndex hyphenIndex in _hyphenIndexes)
{
copied.AddHyphenIndex(hyphenIndex);
}
return(copied);
}
/// <summary>
/// Gets whether or not this NomBankNodeLabel equals another object
/// </summary>
/// <param name="obj">Object to compare this one with</param>
/// <returns>True if the other object is a NomBankNodeLabel and is equal to this one, false otherwise</returns>
public override bool Equals(object obj)
{
if (!(obj is NomBankNodeLabel))
{
return(false);
}
NomBankNodeLabel label = obj as NomBankNodeLabel;
return(_type == label.Type && _feature == label.Feature);
}
/// <summary>
/// Removes a label from this node
/// </summary>
/// <param name="label">Label to remove</param>
public void RemoveLabel(NomBankNodeLabel label)
{
_labels.Remove(label);
// remove from root node collection if it is present
NomBankLabeledNodeCollection nodes = GetLabeledNodeCollection(label, false);
if (nodes != null && nodes.ContainsSingleNode(this))
{
nodes.RemoveSingleNode(this);
}
}
/// <summary>
/// Tries to get a label on this node that matches a given label
/// </summary>
/// <param name="label">Label to find</param>
/// <param name="matchingLabel">Matching label, or null if none was found</param>
/// <returns>Whether or not label was found</returns>
public bool TryGetLabel(NomBankNodeLabel label, out NomBankNodeLabel matchingLabel)
{
matchingLabel = null;
if (!HasLabel(label))
{
return(false);
}
matchingLabel = GetLabel(label);
return(true);
}
/// <summary>
/// Gets label on the current node that matches the given label
/// </summary>
/// <param name="label">Label to match</param>
/// <returns>Matching label</returns>
public NomBankNodeLabel GetLabel(NomBankNodeLabel label)
{
// check each label
foreach (NomBankNodeLabel current in _labels)
{
if (current == label)
{
return(current);
}
}
throw new Exception("Given label not found");
}
/// <summary>
/// Gets descendant nodes by label
/// </summary>
/// <param name="label">Label of nodes to get</param>
/// <returns>List of nodes matching label</returns>
public List <NomBankNode> GetDescendants(NomBankNodeLabel label)
{
List <NomBankNode> nodes = new List <NomBankNode>();
foreach (NomBankNode n in Descendants)
{
if (n.Labels.Contains(label))
{
nodes.Add(n);
}
}
return(nodes);
}
/// <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);
}
}
}
/// <summary>
/// Gets labeled node collection
/// </summary>
/// <param name="label">Label of node collection to get</param>
/// <param name="createIfMissing">Whether or not to create and return a new node collection if none exists</param>
/// <returns>Labeled node collection</returns>
public NomBankLabeledNodeCollection GetLabeledNodeCollection(NomBankNodeLabel label, bool createIfMissing)
{
// look for an existing collection with the given label
foreach (NomBankLabeledNodeCollection nodeCollection in LabeledNodeCollections)
{
if (nodeCollection.Label == label)
{
return(nodeCollection);
}
}
if (!createIfMissing)
{
return(null);
}
// return new collection
NomBankLabeledNodeCollection newCollection = new NomBankLabeledNodeCollection(label);
LabeledNodeCollections.Add(newCollection);
return(newCollection);
}
/// <summary>
/// Gets whether or not this node has a particular label
/// </summary>
/// <param name="label">Label to check for</param>
/// <returns>True if label is present and false otherwise</returns>
public bool HasLabel(NomBankNodeLabel label)
{
return(_labels.Contains(label));
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="label">Label for collection</param>
public NomBankLabeledNodeCollection(NomBankNodeLabel label)
{
_label = label;
_appliedIndexes = new List <NomBankNodeLabel.HyphenationIndex>();
}
