getTransactionByBlockHashAndIndex method

Future<EthereumTransaction?> getTransactionByBlockHashAndIndex(
  1. EthereumData? blockHash,
  2. int? index
)

Get transaction by block hash and index. Returns information about a transaction by block hash and transaction index position. Hash of a block and integer of the transaction index position. Returns see getTransactionByHash.

Implementation

Future<EthereumTransaction?> getTransactionByBlockHashAndIndex(
    EthereumData? blockHash, int? index) async {
  if (blockHash == null) {
    throw ArgumentError.notNull(
        'Ethereum::getTransactionByBlockHashAndIndex - blockHash');
  }
  if (index == null) {
    throw ArgumentError.notNull(
        'Ethereum::getTransactionByBlockHashAndIndex - index');
  }
  final dynamic params = <dynamic>[
    blockHash.asString,
    EthereumUtilities.intToHex(index)
  ];
  const method = EthereumRpcMethods.getTransactionByBlockHashAndIndex;
  final dynamic res = await _client.rpcClient.request(method, params);
  if (res != null && res.containsKey(EthereumConstants.ethResultKey)) {
    return EthereumTransaction.fromMap(res[EthereumConstants.ethResultKey]);
  }
  _client.processError(method, res);
  return null;
}