Struct NvimHost 

pub struct NvimHost { /* private fields */ }

Host-side Nvim state: the only thing the host must track itself is the pending-Z flag for the ZZ/ZQ two-key sequence.

Implementations

impl NvimHost

pub fn new() -> Self

pub fn handle_key( &mut self, nvim: &NvimBackend, key: &KeyEvent, tx: &AppTx, ) -> NvimKeyResult

Apply one key to the Nvim backend: classify, update the pending-Z flag, then forward / emit as the decision dictates.

The snapshot Mutex (shared with the reverse-refresh task) is locked only when the decision actually consults mode/cmdline — see [needs_snapshot]. Ordinary keystrokes (insert-mode typing, the pending-Z second key) take the lock-free path: no lock, no clone.

pub fn frame_sync( &self, nvim: &NvimBackend, width: u16, height: u16, ) -> FrameSync

Per-frame sync: resize nvim to the editor area, then read the snapshot’s content_gen and active visual selection.

Canonical explanation of the revision mirror (referenced from the host’s key handler): the editor tracks two independent counters. edit_generation (bumped by every forwarded key) invalidates the view cache; content_gen is owned by the reverse-refresh task in backend.rs, which bumps it only when snap.lines actually diffs. We mirror content_gen into the host’s content_revision here. Because navigation keystrokes don’t change lines, they don’t bump content_gen, so an in-flight autosave’s revision token stays valid across cursor movement. NonZeroU64::new(gen + 1) maps the initial gen == 0 to “no change yet” (None leaves the host’s revision untouched).

Trait Implementations

impl Debug for NvimHost

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for NvimHost

fn default() -> NvimHost

Returns the “default value” for a type.