getStorageAt method
Future<EthereumData?>
getStorageAt(
- EthereumAddress? address,
- int? pos,
- EthereumDefaultBlock? block
Get Storage at, the value from a storage position at a given address. Parameters are the address of the storage, the integer position of the storage and the default block parameter.
Implementation
Future<EthereumData?> getStorageAt(
EthereumAddress? address, int? pos, EthereumDefaultBlock? block) async {
if (address == null) {
throw ArgumentError.notNull('Ethereum::getStorageAt - address');
}
if (pos == null) {
throw ArgumentError.notNull('Ethereum::getStorageAt - pos');
}
if (block == null) {
throw ArgumentError.notNull('Ethereum::getStorageAt - block');
}
const method = EthereumRpcMethods.storageAt;
final blockString = block.getSelection();
final params = <String?>[
address.asString,
EthereumUtilities.intToHex(pos),
blockString
];
final dynamic res = await _client.rpcClient.request(method, params);
if (res != null && res.containsKey(EthereumConstants.ethResultKey)) {
return EthereumData.fromString(res[EthereumConstants.ethResultKey]);
}
_client.processError(method, res);
return null;
}