Function parser_c::parser::lexer::token_plus

pub fn token_plus<T, R, M>(
    mkTok: M, 
    fromStr: R, 
    pos: Position, 
    len: isize, 
    inp: InputStream
) -> Result<CToken, ParseError> where
    R: Fn(&str) -> Result<T, String>,
    M: Fn(PosLength, T) -> CToken, 

token that may fail