nimbus-eth2/tests/spec_epoch_processing/epoch_utils.nim

43 lines
1.7 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2021 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import
# Specs
../../beacon_chain/spec/[
forkedbeaconstate_helpers, state_transition, state_transition_epoch],
../../beacon_chain/spec/datatypes/base
proc processSlotsUntilEndCurrentEpoch(state: var ForkedHashedBeaconState) =
# Process all slots until the end of the last slot of the current epoch
var
cache = StateCache()
rewards = RewardInfo()
let slot =
getStateField(state, slot) + SLOTS_PER_EPOCH -
(getStateField(state, slot) mod SLOTS_PER_EPOCH)
# Transition to slot before the epoch state transition
discard process_slots(state, slot - 1, cache, rewards, {}, FAR_FUTURE_SLOT)
# For the last slot of the epoch,
# only process_slot without process_epoch
# (see process_slots()) - state.root is invalid after here!
process_slot(state.hbsPhase0.data, getStateRoot(state))
proc transitionEpochUntilJustificationFinalization*(state: var ForkedHashedBeaconState) =
# Process slots and do the epoch transition until crosslinks
processSlotsUntilEndCurrentEpoch(state)
var
cache = StateCache()
rewards = RewardInfo()
rewards.init(state.hbsPhase0.data)
rewards.process_attestations(state.hbsPhase0.data, cache)
process_justification_and_finalization(
state.hbsPhase0.data, rewards.total_balances)