40 lines
1.7 KiB
Nim
40 lines
1.7 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2020 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.push raises: [Defect].}
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import
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# Standard library
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std/sets,
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# Internals
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./datatypes, ./beaconstate
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# Helpers used in epoch transition and trace-level block transition
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# --------------------------------------------------------
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/specs/phase0/beacon-chain.md#helper-functions-1
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func get_attesting_indices*(
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state: BeaconState, attestations: openArray[PendingAttestation],
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cache: var StateCache): HashSet[ValidatorIndex] =
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# This is part of get_unslashed_attesting_indices(...) in spec.
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# Exported bceause of external trace-level chronicles logging.
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result = initHashSet[ValidatorIndex]()
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for a in attestations:
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result.incl get_attesting_indices(
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state, a.data, a.aggregation_bits, cache)
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/specs/phase0/beacon-chain.md#helper-functions-1
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func get_unslashed_attesting_indices*(
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state: BeaconState, attestations: openArray[PendingAttestation],
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cache: var StateCache): HashSet[ValidatorIndex] =
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result = initHashSet[ValidatorIndex]()
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for a in attestations:
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for idx in get_attesting_indices(
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state, a.data, a.aggregation_bits, cache):
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if not state.validators[idx].slashed:
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result.incl idx
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