private void DisplayNode(Node node)
{
Console.WriteLine(node.Text);
foreach (var input in node.Inputs)
{
Console.Write(input.MatchText+"\t");
}
Console.WriteLine();
}
private Node HandleInput(Node currentNode, string input)
{
var nodeLabel = currentNode.Inputs.Find(o => o.MatchText == input);
if (nodeLabel == null)
{
return currentNode;
}
var nextNode = Nodes.Find(o => o.Label == nodeLabel.Target);
if (nextNode == null)
{
return null;
}
return nextNode;
}
private void ApplyCommand(Command command, Node newNode)
{
switch (command.Type)
{
case CommandType.end:
break;
case CommandType.input:
var input = new UserInput();
input.MatchText = command.Attributes["input"];
input.Target = command.Attributes["target"];
newNode.Inputs.Add(input);
break;
case CommandType.label:
newNode.Label = command.Attributes["label"];
break;
default:
throw new ArgumentOutOfRangeException();
}
HandleModifiers(command, newNode);
}
public Node GetNextNode()
{
var nodeText = new StringBuilder();
var newNode = new Node();
var line = "";
while (line != "#end")
{
line = _reader.ReadLine();
if (!string.IsNullOrEmpty(line))
{
if (line[0] == '#') //Must be a command line
{
var command = GetCommandFromLine(line);
ApplyCommand(command, newNode);
}
else //must be node text then
{
nodeText.AppendLine(line);
}
}
}
newNode.Text = nodeText.ToString();
return newNode;
}
private void HandleModifiers(Command command, Node newNode)
{
if (command.Type == CommandType.label)
{
foreach (var commandModifyer in command.Modifyers)
{
if (commandModifyer == CommandModifyer.start || commandModifyer == CommandModifyer.finish)
{
newNode.Type = commandModifyer;
}
}
}
}