public CommentNode Parse(IEnumerator <LexerItem> items)
{
var root = new CommentNode();
this.Parse(root, items);
return(root);
}
private CommentNode Parse(XmlLexerItem item, IEnumerator <LexerItem> items)
{
var node = new CommentNode(item);
if (!item.IsCloseTag)
{
this.Parse(node, items, xml => !xml.IsOpenTag && xml.IsCloseTag && xml.TagName == item.TagName);
}
return(node);
}
internal CommentNode Add(CommentNode node)
{
node.Parent = this;
var last = this.children.LastOrDefault();
if (last != null)
{
last.Next = node;
node.Previous = last;
}
this.children.Add(node);
return(node);
}
private void Parse(CommentNode root, IEnumerator <LexerItem> items, Predicate <XmlLexerItem> shouldCloseAfter)
{
while (items.MoveNext())
{
var item = items.Current;
if (item is XmlLexerItem xmlItem)
{
root.Add(this.Parse(xmlItem, items));
if (shouldCloseAfter(xmlItem))
{
return;
}
}
else if (item is TextLexerItem textItem)
{
root.Add(new CommentNode(textItem));
}
else
{
throw new InvalidOperationException($"Unhandled lexer item type '{item.GetType().Name}'.");
}
}
}
private void Parse(CommentNode root, IEnumerator <LexerItem> items)
{
this.Parse(root, items, _ => false);
}