Trait DiffTarget

Source

pub trait DiffTarget {
Show 21 methods    // Required methods
    fn get_fork(&self) -> ForkName;
    fn scalar_header_mut(&mut self) -> &mut Vec<u8> ⓘ;
    fn balances_mut(&mut self) -> &mut impl ListMutTarget<u64>;
    fn validators_mut(&mut self) -> &mut impl ValidatorMutTarget;
    fn block_roots_mut(&mut self) -> &mut [[u8; 32]];
    fn state_roots_mut(&mut self) -> &mut [[u8; 32]];
    fn randao_mixes_mut(&mut self) -> &mut [[u8; 32]];
    fn slashings_mut(&mut self) -> &mut [u64];
    fn eth1_data_votes_mut(&mut self) -> &mut Vec<u8> ⓘ;
    fn historical_roots_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn previous_epoch_attestations_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn current_epoch_attestations_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn previous_participation_mut(
        &mut self,
    ) -> Option<&mut impl ListMutTarget<u8>>;
    fn current_participation_mut(
        &mut self,
    ) -> Option<&mut impl ListMutTarget<u8>>;
    fn inactivity_scores_mut(&mut self) -> Option<&mut Vec<u64>>;
    fn current_sync_committee_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn next_sync_committee_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn historical_summaries_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn pending_deposits_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn pending_partial_withdrawals_mut(&mut self) -> Option<&mut Vec<u8>>;
    fn pending_consolidations_mut(&mut self) -> Option<&mut Vec<u8>>;
}

Expand description

Mutable state interface used by apply.

Implement this trait for a beacon-state representation to allow an archived BeaconStateDelta to be applied directly to the client’s native state.

The trait deliberately exposes only the mutable views required by the delta algorithms. It does not require the underlying state to use the same memory layout as Ethereum’s SSZ representation.

§Fork requirements

get_fork must return the fork of the state being modified. apply rejects the operation if it differs from the fork stored in the delta.

Fork-specific accessors should return None when the corresponding field does not exist in the state representation.

§Mutation

Implementations must return references to the actual state storage. apply mutates these collections in place.

If an implementation returns a view backed by temporary storage rather than the actual state, the reconstructed values will not be persisted to the beacon state.