gistfile1.cs

private static readonly Regex ExpressionArgumentPattern = new Regex(@"
	^
	\s*
	(?<SelectorType>Current|SiteMarker) # Match one of these selector types.
	\s*
	(=
		\s*
		(?<SelectorArgument>.+?) # Optionally match a selector argument (one or more of any character, non-greedy).
	)?
	(
		\s*
		,
		\s*
		(?<ReturnType>Entity|Node|Url) # Optionally match one of these return types.
	)?
	\s*
	$", RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace | RegexOptions.ExplicitCapture);