/// <summary>
/// Visits all items in the given order
/// </summary>
/// <param name="item">The item to visit</param>
/// <param name="start">The state to use</param>
/// <returns>All items, including the start item, in the given order</returns>
private static IEnumerable <VisitedItem> All(ParsedItem item, VisitedItem start, TraverseOrder order)
{
start = start ?? new VisitedItem();
if (order == TraverseOrder.DepthFirstPostOrder)
{
start.Parents.Add(item);
foreach (var n in item.Children)
{
foreach (var c in All(n, start, order))
{
yield return(c);
}
}
start.Parents.RemoveAt(start.Parents.Count - 1);
start.Current = item;
yield return(start);
}
else //if (order == TraverseOrder.DepthFirstPreOrder)
{
start.Current = item;
yield return(start);
start.Parents.Add(item);
foreach (var n in item.Children)
{
foreach (var c in All(n, start, order))
{
yield return(c);
}
}
start.Parents.RemoveAt(start.Parents.Count - 1);
}
}
/// <summary>
/// Visits all items in the given order
/// </summary>
/// <param name="item">The item to visit</param>
/// <param name="order">The order to visit in</param>
/// <returns>All items, including the start item, in the given order</returns>
public static IEnumerable <VisitedItem> All(this ParsedItem item, TraverseOrder order = TraverseOrder.DepthFirstPreOrder)
{
return(All(item, new VisitedItem(), order));
}
/// <summary>
/// Constructs a new parserexception
/// </summary>
/// <param name="message">The error message</param>
/// <param name="source">The item with the problem</param>
public ParserException(string message, AST.ParsedItem source)
: this(message, source.SourceToken)
{
Item = source;
}