Struct Overlay 

pub struct Overlay { /* private fields */ }

An in-memory overlay that captures writes on top of the immutable DAG. Reads check the overlay first; if not found, fall through to the DAG/CAS.

Implementations

impl Overlay

pub fn new() -> Self

pub fn write(&mut self, path: &str, data: Vec<u8>)

Write data to a path in the overlay.

pub fn read(&self, path: &str) -> Option<&[u8]>

Read data from the overlay. Returns None if path is not in the overlay.

pub fn delete(&mut self, path: &str)

Mark a path as deleted in the overlay.

pub fn is_deleted(&self, path: &str) -> bool

Check if a path is explicitly deleted.

pub fn modified_paths(&self) -> Vec<&str>

Return all modified paths (written + deleted).

pub fn clear(&mut self)

Clear all overlay state.

pub fn is_empty(&self) -> bool

Check if the overlay has any modifications.

Trait Implementations

impl Default for Overlay

fn default() -> Self

Returns the “default value” for a type.