43 lines
1.8 KiB
Nim
43 lines
1.8 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2019 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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import
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# Standard library
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sets,
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# Internals
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./datatypes, ./digest, ./beaconstate
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# Logging utilities
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# --------------------------------------------------------
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# TODO: gather all logging utilities
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# from crypto, digest, etc in a single file
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func shortLog*(x: Checkpoint): string =
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"(epoch: " & $x.epoch & ", root: \"" & shortLog(x.root) & "\")"
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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/v0.9.2/specs/core/0_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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stateCache: var StateCache): HashSet[ValidatorIndex] =
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# This is part of get_unslashed_attesting_indices(...) in spec.
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result = initHashSet[ValidatorIndex]()
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for a in attestations:
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result = result.union(get_attesting_indices(
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state, a.data, a.aggregation_bits, stateCache))
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# https://github.com/ethereum/eth2.0-specs/blob/v0.9.4/specs/core/0_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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stateCache: var StateCache): HashSet[ValidatorIndex] =
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result = get_attesting_indices(state, attestations, stateCache)
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for index in result:
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if state.validators[index].slashed:
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result.excl index
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