internal static IEnumerable <ParseNode> TraverseSegmentsDepthFirst(this ParseNode startNode)
{
var visited = new HashSet <ParseNode>();
var stack = new Stack <ParseNode>();
var parents = startNode.AncestorsAndSelf();
stack.Push(startNode);
while (stack.Any())
{
var current = stack.Pop();
if (!visited.Add(current))
{
continue;
}
if (current.Prefix == Prefixes.S)
{
yield return(current);
}
var neighbours = current.NeighboursWithExclusion(parents).Where(p => !visited.Contains(p));
foreach (var neighbour in neighbours.Reverse())
{
stack.Push(neighbour);
}
}
}
internal static object Analyze(this List <SegmentContext> segments, Separators separators, Type type, string rulesAssemblyName)
{
if (segments == null)
{
throw new ArgumentNullException("segments");
}
if (separators == null)
{
throw new ArgumentNullException("separators");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
var messageGrammar = ParseNode.BuldTree(type, true);
if (messageGrammar.Prefix != Prefixes.M)
{
throw new Exception(string.Format("Only messages are supported: {0}", messageGrammar.Name));
}
var segmentPosition = messageGrammar.Children.First();
var instancePosition = new ParseNode(type);
foreach (var segment in segments)
{
if (segment.IsHeader)
{
continue;
}
Logger.Log(string.Format("Segment to match: {0}", segment.LogName));
try
{
// Jump back to HL segment if needed
if (segment.IsJump)
{
segmentPosition = messageGrammar.JumpToHl(instancePosition.Root(), segment.ParentId);
}
var currSeg = segmentPosition.TraverseSegmentsDepthFirst().FirstOrDefault(n => n.IsEqual(segment));
if (currSeg == null)
{
throw new Exception(
string.Format(
"Segment {0} was not found after segment {1} in class {2}.",
segment.Value, segmentPosition.EdiName, type.Name));
}
var segmentTree = currSeg.AncestorsToIntersection(segmentPosition);
instancePosition = instancePosition.AncestorsAndSelf().Last(nt => nt.Name == segmentTree.First().Parent.Name);
foreach (var parseTree in segmentTree)
{
instancePosition = instancePosition.AddChild(parseTree.Type, parseTree.Type.Name);
if (parseTree.Prefix == Prefixes.S)
{
instancePosition.ParseSegment(segment.Value, separators);
}
}
segmentPosition = currSeg;
}
catch (Exception ex)
{
throw new ParserException("Failed at line: " + segment.Value, ex);
}
Logger.Log(string.Format("Matched segment: {0}", segmentPosition.Name));
}
return(instancePosition.Root().ToInstance());
}
