Struct grin_core::core::pmmr::RewindablePMMR

pub struct RewindablePMMR<'a, T, B> where
    T: PMMRable,
    B: Backend<T>,  { /* fields omitted */ }

Rewindable (but still readonly) view of a PMMR.

Methods

impl<'a, T, B> RewindablePMMR<'a, T, B> where
    T: PMMRable,
    B: 'a + Backend<T>, 

pub fn new(backend: &'a B) -> RewindablePMMR<T, B>

Build a new readonly PMMR.

pub fn backend(&'a self) -> &dyn Backend<T>

Reference to the underlying storage backend.

pub fn at(backend: &'a B, last_pos: u64) -> RewindablePMMR<T, B>

Build a new readonly PMMR pre-initialized to last_pos with the provided backend.

pub fn rewind(&mut self, position: u64) -> Result<(), String>

Note: We only rewind the last_pos, we do not rewind the (readonly) backend. Prunable backends are not supported here.

pub fn get_data(&self, pos: u64) -> Option<T::E>

Get the data element at provided position in the MMR.

pub fn is_empty(&self) -> bool

Is the MMR empty?

pub fn root(&self) -> Result<Hash, String>

Computes the root of the MMR. Find all the peaks in the current tree and "bags" them to get a single peak.

pub fn peaks(&self) -> Vec<Hash>

Returns a vec of the peaks of this MMR.

pub fn unpruned_size(&self) -> u64

Total size of the tree, including intermediary nodes and ignoring any pruning.