nimbus-eth2/beacon_chain/extras.nim

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Nim

# beacon_chain
# Copyright (c) 2018-2022 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.
{.push raises: [Defect].}
# Temporary dumping ground for extra types and helpers that could make it into
# the spec potentially
#
# The `skipXXXValidation` flags are used to skip over certain checks that are
# normally done when an untrusted block arrives from the network. The
# primary use case for this flag is when a proposer must propose a new
# block - in order to do so, it needs to update the state as if the block
# was valid, before it can sign it. Also useful for some testing, fuzzing with
# improved coverage, and to avoid unnecessary validation when replaying trusted
# (previously validated) blocks.
type
UpdateFlag* = enum
skipBlsValidation ##\
## Skip verification of BLS signatures in block processing.
## Predominantly intended for use in testing, e.g. to allow extra coverage.
## Also useful to avoid unnecessary work when replaying known, good blocks.
skipStateRootValidation ##\
## Skip verification of block state root.
strictVerification ##\
## Strictly assert on unexpected conditions to aid debugging.
## Should not be used in production, as additional asserts are reachable.
slotProcessed ##\
## Allow blocks to be applied to states with the same slot number as the
## block which is what happens when `process_block` is called separately
skipLastStateRootCalculation ##\
## When process_slots() is being called as part of a state_transition(),
## the hash_tree_root() from the block will fill in the state.root so it
## should skip calculating that last state root.
enableTestFeatures ##\
## Whether to enable extra features for testing.
UpdateFlags* = set[UpdateFlag]