75 lines
2.2 KiB
Nim
75 lines
2.2 KiB
Nim
# Nimbus
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# Copyright (c) 2018 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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# This source must have the <vm2_enabled> compiler flag set.
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#
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# why:
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# ../config, ../transaction, etc include ../vm_* interface files which in
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# turn will refer to the ../vm/* definitions rather than ../vm2/* unless the
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# <vm2_enabled> compiler flag is set.
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#
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when not defined(vm2_enabled):
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{.error: "NIM flag must be set: -d:vm2_enabled".}
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import
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../chain_config,
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../constants,
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../forks,
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../db/accounts_cache,
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../transaction,
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./computation,
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./interpreter_dispatch,
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./interpreter/[gas_costs, gas_meter],
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./message,
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./state,
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./types,
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chronicles,
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eth/common,
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eth/common/eth_types,
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options,
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sets
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proc setupTxContext*(vmState: BaseVMState, origin: EthAddress, gasPrice: GasInt, forkOverride=none(Fork)) =
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## this proc will be called each time a new transaction
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## is going to be executed
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vmState.txOrigin = origin
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vmState.txGasPrice = gasPrice
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vmState.fork =
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if forkOverride.isSome:
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forkOverride.get
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else:
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vmState.chainDB.config.toFork(vmState.blockNumber)
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vmState.gasCosts = vmState.fork.forkToSchedule
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proc refundGas*(c: Computation, tx: Transaction, sender: EthAddress) =
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let maxRefund = (tx.gasLimit - c.gasMeter.gasRemaining) div 2
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c.gasMeter.returnGas min(c.getGasRefund(), maxRefund)
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c.vmState.mutateStateDB:
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db.addBalance(sender, c.gasMeter.gasRemaining.u256 * tx.gasPrice.u256)
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proc execComputation*(c: Computation) =
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if not c.msg.isCreate:
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c.vmState.mutateStateDB:
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db.incNonce(c.msg.sender)
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c.execCallOrCreate()
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if c.isSuccess:
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if c.fork < FkLondon:
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# EIP-3529: Reduction in refunds
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c.refundSelfDestruct()
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shallowCopy(c.vmState.selfDestructs, c.selfDestructs)
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shallowCopy(c.vmState.logEntries, c.logEntries)
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c.vmState.touchedAccounts.incl c.touchedAccounts
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c.vmState.status = c.isSuccess
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