silly question about manual parsers:

suppose you have a list of strings, or regexes, or something

and you want to convert a string into a series of tokens/symbols (typically on a microcontroller)

```rust
let test_string = "string1 jfjfjfj string2 faewfa string3 2342342".to_string();
enum Symbol {
  String1, String2, String3
}
...
fn magic(test_string: String) -> Vec<Symbol> { ... }
```

Is there some ergonomic way to do this mapping automatically?