Changes in api and upwards

- Removed out-of-stack error reporting
- Revised module system to match previous Orchid system
- Errors are now in a Vec everywhere
- Implemented atoms and lexer
- Started implementation of line parser
- Tree is now ephemeral to avoid copying Atoms held inside
- Moved numbers into std and the shared parser into base
- Started implementation of Commands

orchid-api/src/interner.rs

@@ -4,7 +4,7 @@ use std::sync::Arc;
 use orchid_api_derive::{Coding, Hierarchy};
 use orchid_api_traits::Request;
 
-use crate::proto::{ExtHostReq, HostExtReq};
+use crate::proto::{ExtHostNotif, ExtHostReq, HostExtReq};
 
 /// Intern requests sent by the replica to the master. These requests are
 /// repeatable.
@@ -80,6 +80,16 @@ impl Request for Sweep {
   type Response = Retained;
 }
 
+/// A notification from the extension to the host, that the extension would benefit from a sweep
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(ExtHostNotif)]
+pub struct AdviseSweep(SweepReason);
+
+#[derive(Clone, Debug, Coding)]
+pub enum SweepReason {
+  None
+}
+
 /// List of keys in this replica that couldn't be sweeped because local
 /// datastructures reference their value.
 #[derive(Clone, Debug, Coding)]