nim-eth/eth/common/transaction.nim

78 lines
1.6 KiB
Nim

import
nimcrypto/keccak,
".."/[common, rlp, keys]
const
EIP155_CHAIN_ID_OFFSET* = 35'i64
func rlpEncodeLegacy(tx: Transaction): auto =
var w = initRlpWriter()
w.startList(6)
w.append(tx.nonce)
w.append(tx.gasPrice)
w.append(tx.gasLimit)
w.append(tx.to)
w.append(tx.value)
w.append(tx.payload)
w.finish()
func rlpEncodeEip155(tx: Transaction): auto =
let chainId = (tx.V - EIP155_CHAIN_ID_OFFSET) div 2
var w = initRlpWriter()
w.startList(9)
w.append(tx.nonce)
w.append(tx.gasPrice)
w.append(tx.gasLimit)
w.append(tx.to)
w.append(tx.value)
w.append(tx.payload)
w.append(chainId)
w.append(0)
w.append(0)
w.finish()
func rlpEncodeEip2930(tx: Transaction): auto =
var w = initRlpWriter()
w.append(1)
w.startList(8)
w.append(tx.chainId.uint64)
w.append(tx.nonce)
w.append(tx.gasPrice)
w.append(tx.gasLimit)
w.append(tx.to)
w.append(tx.value)
w.append(tx.payload)
w.append(tx.accessList)
w.finish()
func rlpEncodeEip1559(tx: Transaction): auto =
var w = initRlpWriter()
w.append(2)
w.startList(9)
w.append(tx.chainId.uint64)
w.append(tx.nonce)
w.append(tx.maxPriorityFee)
w.append(tx.maxFee)
w.append(tx.gasLimit)
w.append(tx.to)
w.append(tx.value)
w.append(tx.payload)
w.append(tx.accessList)
w.finish()
func rlpEncode*(tx: Transaction): auto =
case tx.txType
of TxLegacy:
if tx.V >= EIP155_CHAIN_ID_OFFSET:
tx.rlpEncodeEIP155
else:
tx.rlpEncodeLegacy
of TxEip2930:
tx.rlpEncodeEip2930
of TxEip1559:
tx.rlpEncodeEip1559
func txHashNoSignature*(tx: Transaction): Hash256 =
# Hash transaction without signature
keccak256.digest(rlpEncode(tx))