nimbus-eth1/nimbus/vm_types.nim

138 lines
4.1 KiB
Nim

# Nimbus
# Copyright (c) 2018 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.
import
tables, eth/common, options,
./constants, json, sets,
./vm/[memory, stack, code_stream],
./vm/interpreter/[gas_costs, opcode_values, vm_forks], # TODO - will be hidden at a lower layer
./db/[db_chain, state_db]
type
BaseVMState* = ref object of RootObj
prevHeaders* : seq[BlockHeader]
chaindb* : BaseChainDB
accessLogs* : AccessLogs
blockHeader* : BlockHeader
name* : string
tracingEnabled*: bool
tracer* : TransactionTracer
logEntries* : seq[Log]
receipts* : seq[Receipt]
accountDb* : AccountStateDB
AccessLogs* = ref object
reads*: Table[string, string]
writes*: Table[string, string]
TracerFlags* {.pure.} = enum
EnableTracing
DisableStorage
DisableMemory
DisableStack
DisableState
DisableStateDiff
EnableAccount
TransactionTracer* = object
trace*: JsonNode
gasRemaining*: GasInt
flags*: set[TracerFlags]
accounts*: HashSet[EthAddress]
storageKeys*: HashSet[Uint256]
OpcodeExecutor* = proc(computation: var BaseComputation)
BaseComputation* = ref object of RootObj
# The execution computation
vmState*: BaseVMState
msg*: Message
memory*: Memory
stack*: Stack
gasMeter*: GasMeter
code*: CodeStream
children*: seq[BaseComputation]
rawOutput*: seq[byte]
returnData*: seq[byte]
error*: Error
shouldEraseReturnData*: bool
accountsToDelete*: Table[EthAddress, EthAddress]
opcodes*: Table[Op, proc(computation: var BaseComputation){.nimcall.}]
gasCosts*: GasCosts # TODO - will be hidden at a lower layer
opCodeExec*: OpcodeExecutor
forkOverride*: Option[Fork]
Error* = ref object
info*: string
burnsGas*: bool
erasesReturnData*: bool
Opcode* = ref object of RootObj
# TODO can't use a stack-allocated object because
# "BaseComputation is not a concrete type"
# TODO: We can probably remove this.
kind*: Op
runLogic*: proc(computation: var BaseComputation)
GasMeter* = object
gasRefunded*: GasInt
startGas*: GasInt
gasRemaining*: GasInt
CallKind* = enum
evmcCall = 0, # CALL
evmcDelegateCall = 1, # DELEGATECALL
evmcCallCode = 2, # CALLCODE
evmcCreate = 3, # CREATE
evmcCreate2 = 4 # CREATE2
MsgFlags* = enum
emvcNoFlags = 0
emvcStatic = 1
Message* = ref object
# A message for VM computation
# https://github.com/ethereum/evmc/blob/master/include/evmc/evmc.h
# depth = None
# code = None
# codeAddress = None
# createAddress = None
# logger = logging.getLogger("evm.vm.message.Message")
destination*: EthAddress
sender*: EthAddress
value*: UInt256
data*: seq[byte]
# size_t input_size;
codeHash*: UInt256
create2Salt*: Uint256
gas*: GasInt
gasPrice*: GasInt
depth*: int
kind*: CallKind
flags*: MsgFlags
# Not in EVMC API
# TODO: Done via callback function (v)table in EVMC
code*: seq[byte]
internalOrigin*: EthAddress
internalCodeAddress*: EthAddress
internalStorageAddress*: EthAddress
MessageOptions* = ref object
origin*: EthAddress
depth*: int
createAddress*: EthAddress
codeAddress*: EthAddress
flags*: MsgFlags