internal static IList <ParseNode> AncestorsAndSelf(this ParseNode node)
{
var result = node.Ancestors().Reverse().ToList();
result.Add(node);
return(result);
}
internal static IEnumerable <ParseNode> AncestorsToIntersection(this ParseNode segment, ParseNode lastFoundSegment)
{
if (segment.Prefix != Prefixes.S)
{
throw new ParserException("Not a segment " + segment.Name);
}
var lastParents = lastFoundSegment.Ancestors();
var parents = segment.Ancestors().ToList();
var intersect = parents.Select(n => n.Name).Intersect(lastParents.Select(n => n.Name)).ToList();
var result = parents.TakeWhile(parent => parent.Name != intersect.First()).Reverse().ToList();
if (!result.Any() && segment.IsTrigger)
{
result.Add(segment.Parent);
}
result.Add(segment);
return(result);
}
internal static ParseNode Root(this ParseNode parseNode)
{
return(parseNode.Ancestors().Last());
}