internal virtual bool IsPunc(Tree t)
{
if (t.IsPreTerminal())
{
string s = t.Label().Value();
if (tlp.IsEvalBIgnoredPunctuationTag(s))
{
return(true);
}
}
return(false);
}
public virtual Tree TransformTree(Tree tree)
{
if (tree == null)
{
return(null);
}
ITreeFactory tf = tree.TreeFactory();
string s = tree.Value();
if (tlp.IsStartSymbol(s))
{
return(TransformTree(tree.FirstChild()));
}
if (tree.IsLeaf())
{
return(tf.NewLeaf(tree.Label()));
}
s = tlp.BasicCategory(s);
if (((whOption & 1) != 0) && s.StartsWith("WH"))
{
s = Sharpen.Runtime.Substring(s, 2);
}
if ((whOption & 2) != 0)
{
s = s.ReplaceAll("^WP", "PRP");
// does both WP and WP$ !!
s = s.ReplaceAll("^WDT", "DT");
s = s.ReplaceAll("^WRB", "RB");
}
if (((whOption & 4) != 0) && s.StartsWith("WH"))
{
s = Sharpen.Runtime.Substring(s, 2);
}
// wsg2010: Might need a better way to deal with tag ambiguity. This still doesn't handle the
// case where the GOLD tree does not label a punctuation mark as such (common in French), and
// the guess tree does.
if (deletePunct && tree.IsPreTerminal() && (tlp.IsEvalBIgnoredPunctuationTag(s) || tlp.IsPunctuationWord(tree.FirstChild().Value())))
{
return(null);
}
// remove the extra NPs inserted in the collinsBaseNP option
if (fixCollinsBaseNP && s.Equals("NP"))
{
Tree[] kids = tree.Children();
if (kids.Length == 1 && tlp.BasicCategory(kids[0].Value()).Equals("NP"))
{
return(TransformTree(kids[0]));
}
}
// Magerman erased this distinction, and everyone else has followed like sheep...
if (s.Equals("PRT"))
{
s = "ADVP";
}
IList <Tree> children = new List <Tree>();
for (int cNum = 0; cNum < numKids; cNum++)
{
Tree child = tree.Children()[cNum];
Tree newChild = TransformTree(child);
if (newChild != null)
{
children.Add(newChild);
}
}
if (children.IsEmpty())
{
return(null);
}
Tree node = tf.NewTreeNode(tree.Label(), children);
node.SetValue(s);
return(node);
}