67 lines
2.3 KiB
Nim
67 lines
2.3 KiB
Nim
import ./basics
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import ./provider
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export basics
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type Signer* = ref object of RootObj
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type SignerError* = object of EthersError
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template raiseSignerError(message: string) =
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raise newException(SignerError, message)
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method provider*(signer: Signer): Provider {.base.} =
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doAssert false, "not implemented"
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method getAddress*(signer: Signer): Future[Address] {.base.} =
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doAssert false, "not implemented"
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method signMessage*(signer: Signer,
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message: seq[byte]): Future[seq[byte]] {.base, async.} =
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doAssert false, "not implemented"
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method sendTransaction*(signer: Signer,
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transaction: Transaction) {.base, async.} =
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doAssert false, "not implemented"
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method getGasPrice*(signer: Signer): Future[UInt256] {.base.} =
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signer.provider.getGasPrice()
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method getTransactionCount*(signer: Signer,
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blockTag = BlockTag.latest):
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Future[UInt256] {.base, async.} =
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let address = await signer.getAddress()
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return await signer.provider.getTransactionCount(address, blockTag)
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method estimateGas*(signer: Signer,
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transaction: Transaction): Future[UInt256] {.base, async.} =
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var transaction = transaction
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transaction.sender = some(await signer.getAddress)
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return await signer.provider.estimateGas(transaction)
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method getChainId*(signer: Signer): Future[UInt256] {.base.} =
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signer.provider.getChainId()
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method populateTransaction*(signer: Signer,
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transaction: Transaction):
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Future[Transaction] {.base, async.} =
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if sender =? transaction.sender and sender != await signer.getAddress():
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raiseSignerError("from address mismatch")
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if chainId =? transaction.chainId and chainId != await signer.getChainId():
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raiseSignerError("chain id mismatch")
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var populated = transaction
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if transaction.sender.isNone:
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populated.sender = some(await signer.getAddress())
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if transaction.nonce.isNone:
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populated.nonce = some(await signer.getTransactionCount(BlockTag.pending))
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if transaction.chainId.isNone:
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populated.chainId = some(await signer.getChainId())
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if transaction.gasPrice.isNone:
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populated.gasPrice = some(await signer.getGasPrice())
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if transaction.gasLimit.isNone:
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populated.gasLimit = some(await signer.estimateGas(populated))
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return populated
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