nimbus-eth1/nimbus/db/aristo/aristo_constants.nim

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# nimbus-eth1
# Copyright (c) 2021 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.
{.push raises: [].}
import
eth/[common, trie/nibbles],
./aristo_desc/desc_identifiers
const
EmptyBlob* = seq[byte].default
## Useful shortcut (borrowed from `sync/snap/constants.nim`)
EmptyNibbleSeq* = EmptyBlob.initNibbleRange
## Useful shortcut (borrowed from `sync/snap/constants.nim`)
EmptyVidSeq* = seq[VertexID].default
## Useful shortcut
EmptyQidPairSeq* = seq[(QueueID,QueueID)].default
## Useful shortcut
VOID_CODE_HASH* = EMPTY_CODE_HASH
## Equivalent of `nil` for `Account` object code hash
VOID_HASH_KEY* = EMPTY_ROOT_HASH.to(HashKey)
## Void equivalent for Merkle hash value
VOID_HASH_LABEL* = HashLabel(root: VertexID(0), key: VOID_HASH_KEY)
## Void equivalent for Merkle hash value
DEFAULT_QID_QUEUES* = [
(128, 0), ## Consecutive list of 128 filter slots
( 64, 63), ## Overflow list, 64 filters, skipping 63 filters in-between
( 64, 127), ## ..
( 64, 255)]
# End