133 lines
4.0 KiB
Nim
133 lines
4.0 KiB
Nim
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# 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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import
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../constants,
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../db/accounts_cache,
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./interpreter/op_codes,
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./transaction_tracer,
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./v2state,
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./v2types,
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chronicles,
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eth/[common, keys],
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options,
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sets
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logScope:
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topics = "vm compu helper"
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when defined(chronicles_log_level):
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import stew/byteutils
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template accountExists*(c: Computation, address: EthAddress): bool =
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if c.fork >= FkSpurious:
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not c.vmState.readOnlyStateDB.isDeadAccount(address)
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else:
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c.vmState.readOnlyStateDB.accountExists(address)
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proc addLogEntry*(c: Computation, log: Log) {.inline.} =
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c.logEntries.add(log)
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template fork*(c: Computation): untyped =
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c.vmState.fork
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template gasCosts*(c: Computation): untyped =
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c.vmState.gasCosts
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template getBalance*(c: Computation, address: EthAddress): Uint256 =
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c.vmState.readOnlyStateDB.getBalance(address)
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template getBlockHash*(c: Computation, blockNumber: Uint256): Hash256 =
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c.vmState.getAncestorHash(blockNumber.vmWordToBlockNumber)
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template getBlockNumber*(c: Computation): Uint256 =
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c.vmState.blockNumber.blockNumberToVmWord
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template getChainId*(c: Computation): uint =
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c.vmState.chaindb.config.chainId.uint
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template getCode*(c: Computation, address: EthAddress): seq[byte] =
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c.vmState.readOnlyStateDB.getCode(address)
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template getCodeHash*(c: Computation, address: EthAddress): Hash256 =
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let
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db = c.vmState.readOnlyStateDB
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if not db.accountExists(address) or db.isEmptyAccount(address):
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default(Hash256)
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else:
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db.getCodeHash(address)
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template getCodeSize*(c: Computation, address: EthAddress): uint =
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uint(c.vmState.readOnlyStateDB.getCodeSize(address))
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template getCoinbase*(c: Computation): EthAddress =
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c.vmState.coinbase
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template getDifficulty*(c: Computation): DifficultyInt =
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c.vmState.difficulty
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template getGasLimit*(c: Computation): GasInt =
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c.vmState.gasLimit
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template getGasPrice*(c: Computation): GasInt =
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c.vmState.txGasPrice
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template getOrigin*(c: Computation): EthAddress =
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c.vmState.txOrigin
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template getStorage*(c: Computation, slot: Uint256): Uint256 =
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c.vmState.readOnlyStateDB.getStorage(c.msg.contractAddress, slot)
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template getTimestamp*(c: Computation): int64 =
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c.vmState.timestamp.toUnix
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proc prepareTracer*(c: Computation) {.inline.} =
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c.vmState.tracer.prepare(c.msg.depth)
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proc selfDestruct*(c: Computation, beneficiary: EthAddress) =
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c.vmState.mutateStateDB:
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let
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localBalance = c.getBalance(c.msg.contractAddress)
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beneficiaryBalance = c.getBalance(beneficiary)
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# Transfer to beneficiary
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db.setBalance(beneficiary, localBalance + beneficiaryBalance)
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# Zero the balance of the address being deleted.
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# This must come after sending to beneficiary in case the
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# contract named itself as the beneficiary.
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db.setBalance(c.msg.contractAddress, 0.u256)
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trace "SELFDESTRUCT",
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contractAddress = c.msg.contractAddress.toHex,
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localBalance = localBalance.toString,
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beneficiary = beneficiary.toHex
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c.touchedAccounts.incl beneficiary
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# Register the account to be deleted
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c.suicides.incl(c.msg.contractAddress)
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proc setError*(c: Computation, msg: string, burnsGas = false) {.inline.} =
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c.error = Error(info: msg, burnsGas: burnsGas)
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proc traceOpCodeStarted*(c: Computation, op: Op): int {.inline.} =
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c.vmState.tracer.traceOpCodeStarted(c, op)
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proc traceOpCodeEnded*(c: Computation, op: Op, lastIndex: int) {.inline.} =
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c.vmState.tracer.traceOpCodeEnded(c, op, lastIndex)
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proc tracingEnabled*(c: Computation): bool {.inline.} =
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TracerFlags.EnableTracing in c.vmState.tracer.flags
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# deprecated, related to nimvm/evmc implementation
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proc execSelfDestruct*(c: Computation, address: EthAddress) {.deprecated.} =
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c.selfDestruct(address)
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