openmls 0.4.1

This is a WIP Rust implementation of the Messaging Layer Security (MLS) protocol based on draft 12+.
Documentation 
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use tls_codec::{TlsDeserialize, TlsSerialize, TlsSize, TlsVecU32};

use super::{Deserialize, Serialize};
use crate::treesync::node::Node;

/// # Ratchet Tree Extension.
///
/// The ratchet tree extension contains a list of (optional) [`Node`]s that
/// represent the public state of the tree in an MLS group.
#[derive(
    PartialEq, Clone, Debug, Default, Serialize, Deserialize, TlsSerialize, TlsDeserialize, TlsSize,
)]
pub struct RatchetTreeExtension {
    tree: TlsVecU32<Option<Node>>,
}

impl RatchetTreeExtension {
    /// Build a new extension from a vector of [`Node`]s.
    pub fn new(tree: Vec<Option<Node>>) -> Self {
        RatchetTreeExtension { tree: tree.into() }
    }

    /// Get a slice of the nodes in tis tree.
    pub(crate) fn as_slice(&self) -> &[Option<Node>] {
        self.tree.as_slice()
    }
}