Malex is a lexer based on macroses.
use malex::*;
token_rules!{
TokenKind("string representation") => |input: &str| -> Option<usize> { returns token size },
}
fn main() {
let lexer = Lexer::new(input).tokenize();
}Thats all, see example for more information.
I don't know, it's simple and that's all, simplicity in code makes it slow, because for searching Token it goes through vector of rules and than returns a vector of matched rules.