static string Digit(string str)
{
return(MatchChar(Char.IsDigit)(str));
}
//match at least one whitespace character
static string Whitespace_(string str)
{
string stripFirst = MatchChar(Char.IsWhiteSpace)(str);
return(Whitespace(stripFirst));
}
static string RBracket(string str)
{
return(MatchChar(')')(str));
}
new public static Rule Identifier = Node(Opt(MatchChar('@') + SharedGrammar.Identifier);
