private int IndexOf(Parse child, Parse parent)
{
var kids = AbstractBottomUpParser.CollapsePunctuation(parent.Children, Punctuation);
for (var ki = 0; ki < kids.Length; ki++)
{
if (child.Equals(kids[ki]))
{
return(ki);
}
}
return(-1);
}
private int NonPunctChildCount(Parse node)
{
return(AbstractBottomUpParser.CollapsePunctuation(node.Children, Punctuation).Length);
}
/// <summary>
/// Checks if the specified child is the first child of the specified parent.
/// </summary>
/// <param name="child">The child parse.</param>
/// <param name="parent">The parent parse.</param>
/// <returns><c>true</c> if the specified child is the first child of the specified parent, <c>false</c> otherwise.</returns>
protected bool FirstChild(Parse child, Parse parent)
{
return(AbstractBottomUpParser.CollapsePunctuation(parent.Children, Punctuation)[0].Equals(child));
}
public string[] GetContext(Parse parent, Parse[] constituents, int index, bool trimFrontier)
{
var features = new List <string> {
"default"
};
var children = AbstractBottomUpParser.CollapsePunctuation(parent.Children, punctSet);
var pStart = children[0];
var pend = children[children.Length - 1];
var type = parent.Type;
CheckCons(pStart, "begin", type, features);
CheckCons(pend, "last", type, features);
var production = "p=" + Production(parent, false);
var punctProduction = "pp=" + Production(parent, true);
features.Add(production);
features.Add(punctProduction);
Parse p1 = null;
Parse p2 = null;
var p1s = constituents[index].NextPunctuationSet;
SortedSet <Parse> p2s = null;
var p_1s = constituents[index].PreviousPunctuationSet;
SortedSet <Parse> p_2s = null;
List <Parse> rf;
if (index == 0)
{
rf = new List <Parse>();
}
else
{
rf = Parser.GetRightFrontier(constituents[0], punctSet);
if (trimFrontier)
{
var pi = rf.IndexOf(parent);
if (pi == -1)
{
throw new InvalidOperationException("Parent not found in right frontier:" + parent + " rf=" + rf);
}
for (var ri = 0; ri <= pi; ri++)
{
//System.err.println(pi+" removing "+((Parse)rf.get(0)).getType()+" "+rf.get(0)+" "+(rf.size()-1)+" remain");
rf.RemoveAt(0);
}
}
}
GetFrontierNodes(rf, leftNodes);
var p_1 = leftNodes[0];
var p_2 = leftNodes[1];
var ps = constituents.Length;
if (p_1 != null)
{
p_2s = p_1.PreviousPunctuationSet;
}
if (index + 1 < ps)
{
p1 = constituents[index + 1];
p2s = p1.NextPunctuationSet;
}
if (index + 2 < ps)
{
p2 = constituents[index + 2];
}
Surround(p_1, -1, type, p_1s, features);
Surround(p_2, -2, type, p_2s, features);
Surround(p1, 1, type, p1s, features);
Surround(p2, 2, type, p2s, features);
return(features.ToArray());
}