gecko-dev/third_party/rust/scroll_derive/examples/main.rs

use scroll_derive::{IOread, IOwrite, Pread, Pwrite, SizeWith};

#[derive(Debug, PartialEq, Pread, Pwrite, IOread, IOwrite, SizeWith)]
#[repr(C)]
struct Data {
    id: u32,
    timestamp: f64,
    arr: [u16; 2],
}

use scroll::{Cread, Pread, Pwrite, LE};

fn main() {
    let bytes = [
        0xefu8, 0xbe, 0xad, 0xde, 0, 0, 0, 0, 0, 0, 224, 63, 0xad, 0xde, 0xef, 0xbe,
    ];
    let data: Data = bytes.pread_with(0, LE).unwrap();
    println!("data: {:?}", &data);
    assert_eq!(data.id, 0xdeadbeefu32);
    let mut bytes2 = vec![0; ::std::mem::size_of::<Data>()];
    bytes2.pwrite_with(data, 0, LE).unwrap();
    let data: Data = bytes.pread_with(0, LE).unwrap();
    let data2: Data = bytes2.pread_with(0, LE).unwrap();
    assert_eq!(data, data2);

    let data: Data = bytes.cread_with(0, LE);
    assert_eq!(data, data2);
}