Macro rkyv::out_field

macro_rules! out_field {
    ($out:ident.$field:tt) => { ... };
}

Returns a tuple of the field offset and a mutable pointer to the field of the given struct pointer.

Examples

use core::mem::MaybeUninit;
use rkyv::out_field;

struct Example {
    a: i32,
    b: bool,
}

let mut result = MaybeUninit::<Example>::zeroed();
let out = result.as_mut_ptr();

let (a_off, a) = out_field!(out.a);
unsafe { a.write(42); }
let (b_off, b) = out_field!(out.b);
unsafe { b.write(true); }

let result = unsafe { result.assume_init() };
assert_eq!(result.a, 42);
assert_eq!(result.b, true);