private static Exception _TryParse(string text, out DomSelector result)
{
result = null;
if (CssSelector.TryParse(text, out CssSelector css))
{
result = css;
return(null);
}
return(Failure.NotParsable("text", typeof(DomSelector)));
}
private static Exception _TryParse(string text, out CssSelector result)
{
result = null;
if (text == null)
{
return(new ArgumentNullException(nameof(text)));
}
text = text.Trim();
if (text.Length == 0)
{
return(Failure.AllWhitespace(nameof(text)));
}
try {
var opts = new QueryParserOptions();
var evaluator = QueryParser.Parse(text, opts);
result = new CssSelector(evaluator);
return(null);
} catch (Exception ex) {
return(Failure.NotParsable(nameof(text), typeof(CssSelector), ex));
}
}
public static bool TryParse(string text, out CssSelector result)
{
return(_TryParse(text, out result) == null);
}
protected virtual DomSelector CreateDomSelector(string selector)
{
return(CssSelector.Parse(selector));
}