Deku

Deku provides bit level serialization/deserialization proc-macro for structs

Under the hood, it uses nom as the consumer or “Reader” and bitvec as the “Writer”

Example

```rust use bitvec::prelude::*; use deku::{BitsReader, BitsSize, BitsWriter, DekuRead, DekuWrite};

/// DekuTest Struct // 0 1 2 3 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | fielda | fieldb |c| field_d | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ //

[derive(Debug, PartialEq, DekuRead, DekuWrite)]

// #[deku(endian = "little")] // By default it uses the system endianess, but can be overwritten struct DekuTest { fielda: u8, #[deku(bits = "7")] fieldb: u8, #[deku(bits = "1")] fieldc: u8, #[deku(endian = "big")] fieldd: u16, }

fn main() { let testdata: &[u8] = [0xAB, 0b10100101, 0xAB, 0xCD].as_ref();

let test_deku: DekuTest = test_data.into();

assert_eq!(
    test_deku,
    DekuTest {
        field_a: 0xAB,
        field_b: 0b0_1010010,
        field_c: 0b0000000_1,
        field_d: 0xCDAB,
    }
);

let test_deku: Vec<u8> = test_deku.into();
assert_eq!(test_data.to_vec(), test_deku);

} ```