Reuse transaction utils from eth-common

nimbus/transaction.nim

@@ -8,18 +8,8 @@
 import
   constants, errors, eth/[common, rlp, keys], nimcrypto, utils
 
-proc initTransaction*(nonce: AccountNonce, gasPrice, gasLimit: GasInt, to: EthAddress,
-  value: UInt256, payload: Blob, V: byte, R, S: UInt256, isContractCreation = false): Transaction =
-  result.accountNonce = nonce
-  result.gasPrice = gasPrice
-  result.gasLimit = gasLimit
-  result.to = to
-  result.value = value
-  result.payload = payload
-  result.V = V
-  result.R = R
-  result.S = S
-  result.isContractCreation = isContractCreation
+import eth/common/transaction as common_transaction
+export common_transaction
 
 func intrinsicGas*(data: openarray[byte]): GasInt =
   result = 21_000   # GasTransaction
@@ -42,63 +32,6 @@ proc validate*(t: Transaction) =
     raise newException(ValidationError, "Insufficient gas")
   #  self.check_signature_validity()
 
-type
-  TransHashObj = object
-    accountNonce:  AccountNonce
-    gasPrice:      GasInt
-    gasLimit:      GasInt
-    to {.rlpCustomSerialization.}: EthAddress
-    value:         UInt256
-    payload:       Blob
-    mIsContractCreation {.rlpIgnore.}: bool
-
-proc read(rlp: var Rlp, t: var TransHashObj, _: type EthAddress): EthAddress {.inline.} =
-  if rlp.blobLen != 0:
-    result = rlp.read(EthAddress)
-  else:
-    t.mIsContractCreation = true
-
-proc append(rlpWriter: var RlpWriter, t: TransHashObj, a: EthAddress) {.inline.} =
-  if t.mIsContractCreation:
-    rlpWriter.append("")
-  else:
-    rlpWriter.append(a)
-
-const
-  EIP155_CHAIN_ID_OFFSET = 35
-
-func rlpEncode*(transaction: Transaction): auto =
-  # Encode transaction without signature
-  return rlp.encode(TransHashObj(
-    accountNonce: transaction.accountNonce,
-    gasPrice: transaction.gasPrice,
-    gasLimit: transaction.gasLimit,
-    to: transaction.to,
-    value: transaction.value,
-    payload: transaction.payload,
-    mIsContractCreation: transaction.isContractCreation
-    ))
-
-func rlpEncodeEIP155*(tx: Transaction): auto =
-  let V = (tx.V.int - EIP155_CHAIN_ID_OFFSET) div 2
-  # Encode transaction without signature
-  return rlp.encode(Transaction(
-    accountNonce: tx.accountNonce,
-    gasPrice: tx.gasPrice,
-    gasLimit: tx.gasLimit,
-    to: tx.to,
-    value: tx.value,
-    payload: tx.payload,
-    isContractCreation: tx.isContractCreation,
-    V: V.byte,
-    R: 0.u256,
-    S: 0.u256
-    ))
-
-func txHashNoSignature*(tx: Transaction): Hash256 =
-  # Hash transaction without signature
-  return keccak256.digest(if tx.V.int >= EIP155_CHAIN_ID_OFFSET: tx.rlpEncodeEIP155 else: tx.rlpEncode)
-
 proc getSignature*(transaction: Transaction, output: var Signature): bool =
   var bytes: array[65, byte]
   bytes[0..31] = transaction.R.toByteArrayBE()