README.md - mozsearch

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# scroll_derive

Macros 1.1 implementing #[derive(Pread, Pwrite)] for https://github.com/m4b/scroll

Add derive annotations to your POD seamlessly and easily:

```rust

extern crate scroll;

#[macro_use]

extern crate scroll_derive;

#[derive(Debug, PartialEq, Pread, Pwrite, IOread, IOwrite, SizeWith)]

#[repr(C)]

struct Data {

    id: u32,

    timestamp: f64,

    arr: [u16; 2],

use scroll::{Pread, Pwrite, Cread, 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);

```