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6bd6bae86c
Since these types were written, we've gained an executable spec: https://github.com/ethereum/execution-specs This PR aligns some of the types we use with this spec to simplify comparisons and cross-referencing. Using a `distinct` type is a tradeoff between nim ergonomics, type safety and the ability to work around nim quirks and stdlib weaknesses. In particular, it allows us to overload common functions such as `hash` with correct and performant versions as well as maintain control over string conversions etc at the cost of a little bit of ceremony when instantiating them. Apart from distinct byte types, `Hash32`, is introduced in lieu of the existing `Hash256`, again aligning this commonly used type with the spec which picks bytes rather than bits in the name.
76 lines
2.1 KiB
Nim
76 lines
2.1 KiB
Nim
# eth
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# Copyright (c) 2024 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.push raises: [].}
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import "."/addresses, base
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export addresses, base
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type
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AccessPair* = object
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address* : Address
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storageKeys*: seq[Bytes32]
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AccessList* = seq[AccessPair]
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VersionedHash* = Bytes32
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Authorization* = object
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chainId*: ChainId
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address*: Address
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nonce*: AccountNonce
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yParity*: uint64
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R*: UInt256
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S*: UInt256
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TxType* = enum
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TxLegacy # 0
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TxEip2930 # 1
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TxEip1559 # 2
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TxEip4844 # 3
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TxEip7702 # 4
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Transaction* = object
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txType* : TxType # EIP-2718
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chainId* : ChainId # EIP-2930
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nonce* : AccountNonce
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gasPrice* : GasInt
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maxPriorityFeePerGas*: GasInt # EIP-1559
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maxFeePerGas* : GasInt # EIP-1559
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gasLimit* : GasInt
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to* : Opt[Address]
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value* : UInt256
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payload* : seq[byte]
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accessList* : AccessList # EIP-2930
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maxFeePerBlobGas*: UInt256 # EIP-4844
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versionedHashes*: seq[VersionedHash] # EIP-4844
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authorizationList*: seq[Authorization]# EIP-7702
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V* : uint64
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R*, S* : UInt256
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# 32 -> UInt256
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# 4096 -> FIELD_ELEMENTS_PER_BLOB
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NetworkBlob* = array[32*4096, byte]
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BlobsBundle* = object
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commitments*: seq[KzgCommitment]
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proofs*: seq[KzgProof]
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blobs*: seq[NetworkBlob]
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# TODO why was this part of eth types?
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NetworkPayload* = ref BlobsBundle
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PooledTransaction* = object
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tx*: Transaction
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networkPayload*: NetworkPayload # EIP-4844
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func destination*(tx: Transaction): Address =
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# use getRecipient if you also want to get
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# the contract address
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tx.to.valueOr(default(Address))
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