public TreeNode Parse(string s)
{
var root = new TreeNode();
var stack = new Stack<TreeNode>();
stack.Push(root);
foreach (var c in s)
{
var current = stack.Peek();
if (current.IsEnd(c))
{
stack.Pop();
}
else if (IsStart(c))
{
if (current.GetType() == typeof(TextTreeNode))
{
stack.Pop();
current = stack.Peek();
}
//create node of that type
var boldTreeNode = new BoldTreeNode();
current.Add(boldTreeNode);
stack.Push(boldTreeNode);
}
else
{
if (current.GetType() != typeof(TextTreeNode))
{
var textNode = new TextTreeNode();
textNode.Add(c);
current.Add(textNode);
stack.Push(textNode);
}
else
{
var textNode = (TextTreeNode) current;
textNode.Add(c);
}
}
}
return root;
}
public void Translate(TextTreeNode node, StringBuilder textBuilder)
{
textBuilder.Append(node.Text);
}
