Rust でメモリ上の生のバイト列を見るやつ

get_raw_bytes.rs

fn get_raw_bytes<T>(p: *const T) -> Vec<u8> {
    // https://www.reddit.com/r/rust/comments/2ngnmk/viewing_any_object_as_a_raw_memory_array/
    let size = std::mem::size_of::<T>();
    let mut buf = Vec::with_capacity(size);
    let view = p as *const _ as *const u8;
    for i in 0..size {
        buf.push(unsafe {*view.offset(i as isize)});
    }
    buf
}

fn print_bytes(bytes: Vec<u8>) {
    for (i, x) in bytes.iter().enumerate() {
        if i % 16 == 0 {
            if i != 0 { println!(""); }
            print!("{:04x}| ", i);
        }
        print!("{:02x} ", x);
    }
    println!("");
}

fn print_raw_bytes<T>(p: *const T) {
    print_bytes(get_raw_bytes(p));
}