Oh, interesting. I've used Bitvec for serializing binary data, and I can see how you can use it for parsing single bits or u8s... do you have an example of how to parse, say, a 3-bit binary number with Bitvec?
use bitvec::prelude::*; // BitView trait, Msb0, etc
let my_input = vec![0b11100000u8];
let bitslice = my_input.view_bits::<Msb0>();
let my_num = bitslice[..3].load_be::<u8>();
// continue parsing after my_num
let nextslice = &bitslice[3..];
You would use Lsb0 instead of Msb0 if you wanted to parse bytes starting at the low bit.
It would be more convenient with a peek/take style wrapper over the slice, but I don't think one is included in the crate.
That's really neat, thanks for showing me. This looks very straightforward for parsing a straightforward format.
I think Nom might be more useful as the format gets more complicated... the combinators can really save you quite a bit of time. Having things like many0, or delimited_pair, or length_count already tested and documented saves time compared to implementing + testing it yourself. It's cool seeing how many different approaches you can use to solve the same problem :)
> I think Nom might be more useful as the format gets more complicated... the combinators can really save you quite a bit of time. Having things like many0, or delimited_pair, or length_count already tested and documented saves time compared to implementing + testing it yourself.
Totally agree -- bitvec works for things that are easy to hand write a parser for. Nom is a lot more powerful.
