/// <summary>Attaches trivia to the input nodes provided.</summary>
/// <param name="nodes">List of input nodes. This method calls nodes.MoveNext()
/// before calling nodes.Current.</param>
/// <remarks>Trailing trivia after all nodes is attached to the final node. If
/// <c>nodes</c> is empty then <see cref="GetEmptyResultSet"/> is called to
/// create a dummy node and attach all trivia to it.</remarks>
public IEnumerator <LNode> Run(IEnumerator <LNode> nodes)
{
NextIndex = 0;
var e = RunCore(WithIndexes(nodes), null);
if (e.MoveNext())
{
LNode next = e.Current.A;
while (e.MoveNext())
{
yield return(next);
next = e.Current.A;
}
// Associate remaining trivia with final node
if (NextIndex < SortedTrivia.Count)
{
next = AttachTriviaTo(next, SortedTrivia.Slice(NextIndex), TriviaLocation.TrailingExtra, null, int.MaxValue) ?? next;
}
yield return(next);
}
else
{
// No nodes exist
var result = GetEmptyResultSet();
if (result != null)
{
yield return(result);
}
}
}
private Maybe <Trivia> CurrentTrivia(out SourceRange range)
{
var trivia = SortedTrivia.TryGet(NextIndex);
if (trivia.HasValue)
{
range = GetRange(trivia.Value);
}
else
{
range = default(SourceRange);
}
return(trivia);
}
