mirror of
https://github.com/logos-storage/nim-ethers.git
synced 2026-01-17 13:03:10 +00:00
113 lines
3.2 KiB
Nim
113 lines
3.2 KiB
Nim
import std/json
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import std/strformat
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import std/strutils
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import pkg/json_rpc/jsonmarshal
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import pkg/stew/byteutils
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import ../../basics
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import ../../transaction
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import ../../blocktag
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import ../../provider
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export jsonmarshal
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func fromJson*(T: type, json: JsonNode, name = ""): T =
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fromJson(json, name, result)
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# byte sequence
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func `%`*(bytes: seq[byte]): JsonNode =
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%("0x" & bytes.toHex)
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func fromJson*(json: JsonNode, name: string, result: var seq[byte]) =
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result = hexToSeqByte(json.getStr())
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# byte arrays
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func `%`*[N](bytes: array[N, byte]): JsonNode =
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%("0x" & bytes.toHex)
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func fromJson*[N](json: JsonNode, name: string, result: var array[N, byte]) =
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hexToByteArray(json.getStr(), result)
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# Address
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func `%`*(address: Address): JsonNode =
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%($address)
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func fromJson*(json: JsonNode, name: string, result: var Address) =
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if address =? Address.init(json.getStr()):
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result = address
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else:
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raise newException(ValueError, "\"" & name & "\"is not an Address")
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# UInt256
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func `%`*(integer: UInt256): JsonNode =
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%("0x" & toHex(integer))
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func fromJson*(json: JsonNode, name: string, result: var UInt256) =
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result = UInt256.fromHex(json.getStr())
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# Transaction
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func `%`*(transaction: Transaction): JsonNode =
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result = %{ "to": %transaction.to, "data": %transaction.data }
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if sender =? transaction.sender:
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result["from"] = %sender
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if nonce =? transaction.nonce:
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result["nonce"] = %nonce
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if chainId =? transaction.chainId:
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result["chainId"] = %chainId
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if gasPrice =? transaction.gasPrice:
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result["gasPrice"] = %gasPrice
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if gasLimit =? transaction.gasLimit:
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result["gas"] = %gasLimit
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# BlockTag
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func `%`*(blockTag: BlockTag): JsonNode =
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%($blockTag)
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# Log
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func fromJson*(json: JsonNode, name: string, result: var Log) =
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if not (json.hasKey("data") and json.hasKey("topics")):
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raise newException(ValueError, "'data' and/or 'topics' fields not found")
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var data: seq[byte]
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var topics: seq[Topic]
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fromJson(json["data"], "data", data)
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fromJson(json["topics"], "topics", topics)
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result = Log(data: data, topics: topics)
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# TransactionStatus
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func fromJson*(json: JsonNode, name: string, result: var TransactionStatus) =
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let val = fromHex[int](json.getStr)
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result = TransactionStatus(val)
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func `%`*(status: TransactionStatus): JsonNode =
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%(status.int.toHex)
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# Transaction
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func fromJson*(json: JsonNode, name: string, result: var Transaction) =
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# Deserializes a transaction response, eg eth_getTransactionByHash.
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# Spec: https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_gettransactionbyhash
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let expectedFields =
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@["input", "from", "to", "value", "nonce", "chainId", "gasPrice"]
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for fieldName in expectedFields:
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if not json.hasKey(fieldName):
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raise newException(ValueError,
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fmt"'{fieldName}' field not found in ${json}")
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result = Transaction(
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sender: fromJson(?Address, json["from"], "from"),
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to: Address.fromJson(json["to"], "to"),
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data: seq[byte].fromJson(json["input"], "input"),
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value: UInt256.fromJson(json["value"], "value"),
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nonce: fromJson(?UInt256, json["nonce"], "nonce"),
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chainId: fromJson(?UInt256, json["chainId"], "chainId"),
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gasPrice: fromJson(?UInt256, json["gasPrice"], "gasPrice")
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) |