Struct Store 

pub struct Store { /* private fields */ }

Implementations

impl Store

pub fn open(path: impl AsRef<Path>) -> Result<Self>

Open or create a file-backed store.

pub fn open_in_memory() -> Result<Self>

Open an ephemeral in-memory store (used by tests).

pub fn put(&self, node: &Node) -> Result<NodeHash>

Store a node, returning its content hash. Idempotent: storing an identical node again is a no-op, which is what dedups shared subtrees.

pub fn get(&self, hash: &NodeHash) -> Result<Option<Node>>

Load a single node by hash.

pub fn node_count(&self) -> Result<i64>

Number of distinct nodes stored. Lets a test prove structural sharing.

pub fn checkpoint(&self, name: &str, root: &NodeHash) -> Result<()>

Create an immutable checkpoint pointing at root. Errors if the name is already taken by any ref.

pub fn branch(&self, name: &str, root: &NodeHash) -> Result<()>

Create or move a branch to root. Refuses to overwrite a checkpoint.

pub fn resolve(&self, name: &str) -> Result<Option<NodeHash>>

Resolve a ref name to its root hash.

pub fn materialize(&self, hash: &NodeHash) -> Result<Materialized>

Recursively load the full subtree rooted at hash.