Module postcard

TreeSerialize/TreeDeserialize with postcard.

use ::postcard::{de_flavors::Slice, ser_flavors::AllocVec};
use miniconf::{postcard, Leaf, Packed, Tree, TreeKey};

#[derive(Tree, Default, PartialEq, Debug)]
struct S {
    foo: Leaf<u32>,
    bar: [Leaf<u16>; 2],
};

let source = S {
    foo: 9.into(),
    bar: [7.into(), 11.into()],
};
let kv: Vec<_> = S::nodes::<Packed, 2>()
    .map(|p| {
        let (p, _node) = p.unwrap();
        let v = postcard::get_by_key(&source, p, AllocVec::new()).unwrap();
        (p.into_lsb().get(), v)
    })
    .collect();
assert_eq!(kv, [(2, vec![9]), (6, vec![7]), (7, vec![11])]);

let mut target = S::default();
for (k, v) in kv {
    let p = Packed::from_lsb(k.try_into().unwrap());
    postcard::set_by_key(&mut target, p, Slice::new(&v[..])).unwrap();
}
assert_eq!(source, target);

Functions

• get_by_key
  Get and serialize a node value into a postcard flavor.
• set_by_key
  Deserialize and set a node value from a postcard flavor.