regex-lexer

A regex-based lexer (tokenizer) in Rust.

Basic Usage

enum Token {
    Num(usize),
    // ...
}

let lexer = regex_lexer::LexerBuilder::new()
  .token(r"[0-9]+", |num| Some(Token::Num(num.parse().unwrap())))
  .token(r"\s+", |_| None) // skip whitespace
  // ...
  .build();
  
let tokens = lexer.tokens(/* source */);

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT License (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusing in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.