Struct CheckpointManager 

pub struct CheckpointManager { /* private fields */ }

Session-scoped checkpoint store.

Implementations

impl CheckpointManager

pub fn save( &mut self, label: String, description: Option<String>, status: Status, ) -> &CheckpointEntry

Store a snapshot under label. If the label already exists, the new snapshot overwrites it (and moves to the front of the FIFO order — treat re-saving as a “touch”). Returns the entry’s position-from-newest, for observability.

pub fn get(&self, label: &str) -> Result<&Status, BasicError>

Look up a snapshot’s Status without consuming it. Returns Err(BasicError::CheckpointNotFound) if the label is unknown (fail-loud per design).

pub fn delete(&mut self, label: &str) -> bool

Remove a checkpoint by label. Returns true if it existed.

pub fn list(&self) -> Vec<CheckpointMeta>

List all checkpoints, newest-first. Excludes the Status payload — callers only need the labels and metadata.

pub fn len(&self) -> usize

Total entries currently held.

pub fn is_empty(&self) -> bool

True when empty.

pub fn clear(&mut self)

Drop every checkpoint. Used on file save/load — checkpoints are session state, not file state.

Trait Implementations

impl Debug for CheckpointManager

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

Formats the value using the given formatter.

impl Default for CheckpointManager

fn default() -> CheckpointManager

Returns the “default value” for a type.