public static string GetPositionedText(this IParseTree tree, char filler = ' ')
{
var sb = new StringBuilder();
foreach (var descendant in tree.Descendants().OfType <TerminalNodeImpl>())
{
var fillerCharCount = descendant.Payload.StartIndex - sb.Length;
if (fillerCharCount > 0)
{
sb.Append(filler, fillerCharCount);
}
sb.Append(descendant.Payload.Text);
}
return(sb.ToString());
}
