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Revert `process_crosslinks` and add comment

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Hsiao-Wei Wang 2020-06-18 23:32:23 +08:00
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20
specs/phase1/beacon-chain.md
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@ -926,20 +926,20 @@ def process_crosslinks(state: BeaconState,
committee_count = get_committee_count_at_slot(state, on_time_attestation_slot) committee_count = get_committee_count_at_slot(state, on_time_attestation_slot)
for committee_index in map(CommitteeIndex, range(committee_count)): for committee_index in map(CommitteeIndex, range(committee_count)):
# All attestations in the block for this committee/shard and current slot # All attestations in the block for this committee/shard and current slot
shard = compute_shard_from_committee_index(state, committee_index, on_time_attestation_slot)
# Since the attestations are validated, all `shard_attestations` satisfy `attestation.data.shard == shard`
shard_attestations = [ shard_attestations = [
attestation for attestation in attestations attestation for attestation in attestations
if is_on_time_attestation(state, attestation) and attestation.data.index == committee_index if is_on_time_attestation(state, attestation) and attestation.data.index == committee_index
] ]
if len(shard_attestations) > 0: winning_root = process_crosslink_for_shard(
shard = shard_attestations[0].data.shard state, committee_index, shard_transitions[shard], shard_attestations
winning_root = process_crosslink_for_shard( )
state, committee_index, shard_transitions[shard], shard_attestations if winning_root != Root():
) # Mark relevant pending attestations as creating a successful crosslink
if winning_root != Root(): for pending_attestation in state.current_epoch_attestations:
# Mark relevant pending attestations as creating a successful crosslink if is_winning_attestation(state, pending_attestation, committee_index, winning_root):
for pending_attestation in state.current_epoch_attestations: pending_attestation.crosslink_success = True
if is_winning_attestation(state, pending_attestation, committee_index, winning_root):
pending_attestation.crosslink_success = True
``` ```
###### `verify_empty_shard_transition` ###### `verify_empty_shard_transition`