CFGLib.CFGParser.InitRegex C# (CSharp) Method

		private static void InitRegex() {
			var arrow = @"(?:(?:->)|→)";
			var variablePattern = @"[a-zA-Z_][a-zA-Z0-9_]*";
			var terminalPattern = @"[^']+";
			var lhsPattern = string.Format(@"<(?<lhs>{0})>", variablePattern);
			var rhsPattern = string.Format(@"(?:\s+(?:<(?<nt>{0})>|'(?<t>{1})'|ε))*", variablePattern, terminalPattern);
			var probabilityPattern = string.Format(@"(?:\s+\[(?<weight>[0-9]*\.?[0-9]*)\])?");
			var regexString = string.Format(@"^\s*{0}\s+{1}{2}{3}\s*$", lhsPattern, arrow, rhsPattern, probabilityPattern);
			_productionRegex = new Regex(regexString);
		}