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use crate::primitives::*;
use crate::types::*;
use crate::{Config, BeaconState, BLSConfig, Error};
use bm_le::{MaxVec, Compact, tree_root};
pub fn genesis<C: Config, BLS: BLSConfig>(
genesis_validator_deposits: &[Deposit],
genesis_time: Uint,
genesis_eth1_data: Eth1Data,
) -> Result<(BeaconBlock<C>, BeaconState<C>), Error> {
let state = genesis_beacon_state::<C, BLS>(
genesis_validator_deposits, genesis_time, genesis_eth1_data
)?;
Ok((BeaconBlock {
state_root: tree_root::<C::Digest, _>(&state),
..Default::default()
}, state))
}
pub fn genesis_beacon_state<C: Config, BLS: BLSConfig>(
deposits: &[Deposit],
genesis_time: Uint,
genesis_eth1_data: Eth1Data,
) -> Result<BeaconState<C>, Error> {
let mut state = BeaconState {
genesis_time,
eth1_data: genesis_eth1_data,
latest_block_header: BeaconBlockHeader {
body_root: tree_root::<C::Digest, _>(
&BeaconBlockBody::<C>::default()
),
..Default::default()
},
..BeaconState::<C>::default()
};
for deposit in deposits {
state.process_deposit::<BLS>(deposit.clone())?;
}
for validator in state.validators.iter_mut() {
if validator.effective_balance >= C::max_effective_balance() {
validator.activation_eligibility_epoch = C::genesis_epoch();
validator.activation_epoch = C::genesis_epoch();
}
}
let genesis_active_index_root = tree_root::<C::Digest, _>(
&Compact(MaxVec::<_, C::ValidatorRegistryLimit>::from(
state.active_validator_indices(C::genesis_epoch())
))
);
for index in 0..C::epochs_per_historical_vector() {
state.active_index_roots[index as usize] =
genesis_active_index_root;
}
Ok(state)
}