public ParsingTreeNodeInfo(IParsingTreeNode node, ISourceTextReader textReader, Func <IParsingTreeGroup, ParsingTreeNodeInfo, IEnumerable <ParsingTreeNodeInfo> > childsAccessor, bool fullInfo, ParsingTreeNodeInfo parent = null)
{
this.Node = node;
this.Parent = parent;
var terminal = node as IParsingTreeTerminal;
if (terminal != null)
{
this.Text = "'" + textReader.GetText(terminal.From, terminal.To) + "'";
if (fullInfo)
{
this.Text = (node.Rule == null ? "<NULL>" : node.Rule.Name) + ": " +
(node.Expression == null ? "<NULL>" : node.Expression.ToString()) + "; " + this.Text;
}
}
var group = node as IParsingTreeGroup;
if (group != null)
{
this.Childs = childsAccessor(group, this);
this.Text = node.Rule == null ? "<NULL>" : node.Rule.Name;
if (fullInfo)
{
this.Text += ": " + (node.Expression == null ? "<NULL>" : node.Expression.ToString()) + ";";
}
}
}
public static string GetContent(this IParsingTreeNode node, ISourceTextReader reader)
{
var from = node.GetFromLocation();
if (from.HasValue)
{
var to = node.GetToLocation();
return(reader.GetText(from.Value, to.Value));
}
else
{
return(string.Empty);
}
}
protected override bool TryRunImpl(ISourceTextReader reader, out string content)
{
bool result;
var text = reader.GetText();
var pos = reader.GetPosition();
var match = _regex.Match(text, pos);
if (match.Success && match.Index == pos)
{
content = match.Value;
result = reader.Move(match.Length);
}
else
{
content = null;
result = false;
}
return(result);
}