use Automerge as Document instead of AutoCommit

This allows a lot of operations to drop mut.

1 files changed, 8 insertions, 6 deletions

diff --git a/src/document/mod.rs b/src/document/mod.rs
index 9633241..fa1fa77 100644
--- a/src/document/mod.rs
+++ b/src/document/mod.rs
@@ -2,21 +2,23 @@
 //! (merged-view paths over JSON) the HTTP API and remakes work with.
 
 /// The engine's types, under the names the rest of the crate uses: the document
-/// (Automerge's `AutoCommit`), its changes and their hashes, and its writers (actors);
-/// and what can be written like a document (`Transactable`).
+/// (Automerge's `Automerge`), its changes and their hashes, and its writers (actors);
+/// a write to it (`Transaction`: one change, committed or dropped whole), and what can
+/// be read like a document (`ReadDoc`: the document, or a write in progress) and written
+/// like one (`Transactable`).
 /// Only `document` and `remake` use Automerge itself (`architecture.md`, The document).
-pub(crate) use automerge::transaction::Transactable;
-pub(crate) use automerge::{ActorId, AutoCommit as Document, Change, ChangeHash};
+pub(crate) use automerge::transaction::{Transactable, Transaction};
+pub(crate) use automerge::{ActorId, Automerge as Document, Change, ChangeHash, ReadDoc};
 
 /// The whole document as bytes, as the engine saves it: a backup, the document
 /// file's full save, the size a joining node downloads.
-pub(crate) fn save(doc: &mut Document) -> Vec<u8> {
+pub(crate) fn save(doc: &Document) -> Vec<u8> {
     doc.save()
 }
 
 /// The changes after `since` as bytes that, appended to a save, load with it (the
 /// document file's appends).
-pub(crate) fn save_since(doc: &mut Document, since: &[ChangeHash]) -> Vec<u8> {
+pub(crate) fn save_since(doc: &Document, since: &[ChangeHash]) -> Vec<u8> {
     doc.save_after(since)
 }