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https://github.com/status-im/nimbus-eth1.git
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2a3c67b4be
simplify EVM and delegete those things to accounts cache. also no more manual state clearing, accounts cache will be responsible for both collecting touched account and perform state clearing.
44 lines
1.7 KiB
Nim
44 lines
1.7 KiB
Nim
# Nimbus
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# Copyright (c) 2023 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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import
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../../nimbus/common/common,
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../../nimbus/[vm_state, vm_types],
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../../nimbus/db/accounts_cache
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proc coinbaseStateClearing*(vmState: BaseVMState,
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miner: EthAddress,
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fork: EVMFork,
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touched = true) =
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# This is necessary due to the manner in which the state tests are
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# generated. State tests are generated from the BlockChainTest tests
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# in which these transactions are included in the larger context of a
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# block and thus, the mechanisms which would touch/create/clear the
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# coinbase account based on the mining reward are present during test
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# generation, but not part of the execution, thus we must artificially
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# create the account in VMs prior to the state clearing rules,
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# as well as conditionally cleaning up the coinbase account when left
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# empty in VMs after the state clearing rules came into effect.
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vmState.mutateStateDB:
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if touched:
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db.addBalance(miner, 0.u256)
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# db.persist is an important step when using accounts_cache
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# it will affect the account storage's location
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# during the next call to `getComittedStorage`
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# and the result of rootHash
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# do not clear cache, we need the cache when constructing
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# post state
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db.persist(
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clearEmptyAccount = fork >= FkSpurious,
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clearCache = false)
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