Struct bm_le::InMemoryBackend

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

In-memory merkle database.

Methods

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

pub fn new_with_unit_empty(
    value: <InMemoryBackend<D, T> as Backend>::End
) -> InMemoryBackend<D, T>

Create an in-memory database with unit empty value.

pub fn new_with_inherited_empty() -> InMemoryBackend<D, T>

Create an in-memory database with inherited empty value.

pub fn populate(
    &mut self,
    proofs: HashMap<<InMemoryBackend<D, T> as Backend>::Intermediate, (Value<<InMemoryBackend<D, T> as Backend>::Intermediate, <InMemoryBackend<D, T> as Backend>::End>, Value<<InMemoryBackend<D, T> as Backend>::Intermediate, <InMemoryBackend<D, T> as Backend>::End>), RandomState>
)

Populate the database with proofs.

Trait Implementations

impl<D, T> AsRef<HashMap<<InMemoryBackend<D, T> as Backend>::Intermediate, ((Value<<InMemoryBackend<D, T> as Backend>::Intermediate, <InMemoryBackend<D, T> as Backend>::End>, Value<<InMemoryBackend<D, T> as Backend>::Intermediate, <InMemoryBackend<D, T> as Backend>::End>), Option<usize>), RandomState>> for InMemoryBackend<D, T> where
    D: Digest,
    T: Clone + Default + AsRef<[u8]>, 

fn as_ref(
    &self
) -> &HashMap<<InMemoryBackend<D, T> as Backend>::Intermediate, ((Value<<InMemoryBackend<D, T> as Backend>::Intermediate, <InMemoryBackend<D, T> as Backend>::End>, Value<<InMemoryBackend<D, T> as Backend>::Intermediate, <InMemoryBackend<D, T> as Backend>::End>), Option<usize>), RandomState>

Performs the conversion.

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

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

Returns a copy of the value.

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

Performs copy-assignment from source.

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

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

Intermediate value stored in this merkle database.

type End = V

End value stored in this merkle database.

type Error = InMemoryBackendError

Error type for DB access.

fn intermediate_of(
    &self,
    left: &Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>,
    right: &Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>
) -> <InMemoryBackend<D, V> as Backend>::Intermediate

Get the intermediate value of given left and right child.

fn empty_at(
    &mut self,
    depth_to_bottom: usize
) -> Result<Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>, <InMemoryBackend<D, V> as Backend>::Error>

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

fn get(
    &self,
    key: &<InMemoryBackend<D, V> as Backend>::Intermediate
) -> Result<(Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>, Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>), <InMemoryBackend<D, V> as Backend>::Error>

Get an internal item by key.

fn rootify(
    &mut self,
    key: &<InMemoryBackend<D, V> as Backend>::Intermediate
) -> Result<(), <InMemoryBackend<D, V> as Backend>::Error>

Rootify a key.

fn unrootify(
    &mut self,
    key: &<InMemoryBackend<D, V> as Backend>::Intermediate
) -> Result<(), <InMemoryBackend<D, V> as Backend>::Error>

Unrootify a key.

fn insert(
    &mut self,
    key: <InMemoryBackend<D, V> as Backend>::Intermediate,
    value: (Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>, Value<<InMemoryBackend<D, V> as Backend>::Intermediate, <InMemoryBackend<D, V> as Backend>::End>)
) -> Result<(), <InMemoryBackend<D, V> as Backend>::Error>

Insert a new internal item.