Trait bm_le::Construct

pub trait Construct {
    type Value: Clone + Default;
    fn intermediate_of(left: &Self::Value, right: &Self::Value) -> Self::Value;
    fn empty_at<DB>(
        db: &mut DB, 
        depth_to_bottom: usize
    ) -> Result<Self::Value, <DB as Backend>::Error>
    where
        DB: WriteBackend<Construct = Self> + ?Sized;
}

Construct for a merkle tree.

Associated Types

type Value: Clone + Default

Value stored in this merkle database.

Loading content...

Required methods

fn intermediate_of(left: &Self::Value, right: &Self::Value) -> Self::Value

Get the intermediate value of given left and right child.

fn empty_at<DB>(
    db: &mut DB,
    depth_to_bottom: usize
) -> Result<Self::Value, <DB as Backend>::Error> where
    DB: WriteBackend<Construct = Self> + ?Sized, 

Get or create the empty value given a backend. empty_at(0) should always equal to Value::End(Default::default()).

Loading content...

Implementors

impl<D, V> Construct for InheritedDigestConstruct<D, V> where
    D: Digest,
    V: From<GenericArray<u8, <D as Digest>::OutputSize>> + AsRef<[u8]> + Default + Clone, 

type Value = V

fn intermediate_of(
    left: &<InheritedDigestConstruct<D, V> as Construct>::Value,
    right: &<InheritedDigestConstruct<D, V> as Construct>::Value
) -> <InheritedDigestConstruct<D, V> as Construct>::Value

fn empty_at<DB>(
    db: &mut DB,
    depth_to_bottom: usize
) -> Result<<InheritedDigestConstruct<D, V> as Construct>::Value, <DB as Backend>::Error> where
    DB: WriteBackend<Construct = InheritedDigestConstruct<D, V>> + ?Sized, 

impl<D, V> Construct for UnitDigestConstruct<D, V> where
    D: Digest,
    V: From<GenericArray<u8, <D as Digest>::OutputSize>> + AsRef<[u8]> + Default + Clone, 

type Value = V

fn intermediate_of(
    left: &<UnitDigestConstruct<D, V> as Construct>::Value,
    right: &<UnitDigestConstruct<D, V> as Construct>::Value
) -> <UnitDigestConstruct<D, V> as Construct>::Value

fn empty_at<DB>(
    _db: &mut DB,
    _depth_to_bottom: usize
) -> Result<<UnitDigestConstruct<D, V> as Construct>::Value, <DB as Backend>::Error> where
    DB: WriteBackend<Construct = UnitDigestConstruct<D, V>> + ?Sized, 

Loading content...