Struct bm::NoopBackend

pub struct NoopBackend<D: Digest, T: AsRef<[u8]> + Clone + Default>(_, _);

Noop merkle database.

Methods

impl<D: Digest, T: AsRef<[u8]> + Clone + Default> NoopBackend<D, T>

pub fn new_with_unit_empty(value: EndOf<Self>) -> Self

Create an in-memory database with unit empty value.

pub fn new_with_inherited_empty() -> Self

Create an in-memory database with inherited empty value.

Trait Implementations

impl<D: Digest, V: AsRef<[u8]> + Clone + Default> Backend for NoopBackend<D, V>

type Intermediate = GenericArray<u8, D::OutputSize>

Intermediate value stored in this merkle database.

type End = V

End value stored in this merkle database.

type Error = NoopBackendError

Error type for DB access.

fn intermediate_of(
    &self,
    left: &ValueOf<Self>,
    right: &ValueOf<Self>
) -> IntermediateOf<Self>

Get the intermediate value of given left and right child.

fn empty_at(
    &mut self,
    depth_to_bottom: usize
) -> Result<ValueOf<Self>, Self::Error>

Get or create the empty value at given depth-to-bottom.

fn get(
    &self,
    _key: &IntermediateOf<Self>
) -> Result<(ValueOf<Self>, ValueOf<Self>), Self::Error>

Get an internal item by key.

fn rootify(&mut self, _key: &IntermediateOf<Self>) -> Result<(), Self::Error>

Rootify a key.

fn unrootify(&mut self, _key: &IntermediateOf<Self>) -> Result<(), Self::Error>

Unrootify a key.

fn insert(
    &mut self,
    _key: IntermediateOf<Self>,
    _value: (ValueOf<Self>, ValueOf<Self>)
) -> Result<(), Self::Error>

Insert a new internal item.

impl<D: Clone + Digest, T: Clone + AsRef<[u8]> + Default> Clone for NoopBackend<D, T>

fn clone(&self) -> NoopBackend<D, T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.