/// <summary>
/// Gets the set of roles not filled. Numbers in the set correspond to the argument positions in the frame file for the
/// current nominal predicate. Only valid for root nodes.
/// </summary>
/// <param name="considerNullElementNodes">Whether or not to consider null-element nodes when checking whether a role is filled</param>
public Set <int> GetUnfilledRoles(bool considerNullElementNodes)
{
if (!IsRoot)
{
throw new Exception("Not valid for non-root nodes");
}
// check for a node that fills each role in the set
Set <int> unfilledRoles = new Set <int>();
foreach (Role role in RoleSet)
{
bool filled = false;
NomBankNodeLabel.NodeType argType = (NomBankNodeLabel.NodeType)Enum.Parse(typeof(NomBankNodeLabel.NodeType), "Arg" + role.Number);
foreach (NomBankNode node in GetDescendants(argType))
{
if (!node.IsNullElement || considerNullElementNodes)
{
filled = true;
break;
}
}
if (!filled)
{
unfilledRoles.Add(role.Number);
}
}
return(unfilledRoles);
}
/// <summary>
/// Gets whether or not this node is of the given type
/// </summary>
/// <param name="type">Type to check for</param>
/// <returns>True if node is of given type and false otherwise</returns>
public bool HasType(NomBankNodeLabel.NodeType type)
{
foreach (NomBankNodeLabel label in _labels)
{
if (label.Type == type)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Gets labels matching given type
/// </summary>
/// <param name="type">Type of label to get</param>
/// <returns>Set of labels</returns>
public Set <NomBankNodeLabel> GetLabels(NomBankNodeLabel.NodeType type)
{
Set <NomBankNodeLabel> labels = new Set <NomBankNodeLabel>();
foreach (NomBankNodeLabel label in _labels)
{
if (label.Type == type)
{
labels.Add(label);
}
}
return(labels);
}
/// <summary>
/// Gets descendant nodes by their type
/// </summary>
/// <param name="type">Type of node to get</param>
/// <returns>List of nodes of given type</returns>
public List <NomBankNode> GetDescendants(NomBankNodeLabel.NodeType type)
{
List <NomBankNode> nodes = new List <NomBankNode>();
foreach (NomBankNode n in Descendants)
{
if (n.HasType(type))
{
nodes.Add(n);
}
}
return(nodes);
}
/// <summary>
/// Removes labels of a given type
/// </summary>
/// <param name="type">Type of label to remove</param>
public void RemoveLabels(NomBankNodeLabel.NodeType type)
{
List <NomBankNodeLabel> toRemove = new List <NomBankNodeLabel>();
foreach (NomBankNodeLabel label in _labels)
{
if (label.Type == type)
{
toRemove.Add(label);
}
}
foreach (NomBankNodeLabel label in toRemove)
{
RemoveLabel(label);
}
}
