SignUpTokenGatekeeper
This contract allows to gatekeep MACI signups by requiring new voters to own a certain ERC721 token
token
contract SignUpToken token
the reference to the SignUpToken contract
maci
address maci
the reference to the MACI contract
registeredTokenIds
mapping(uint256 => bool) registeredTokenIds
a mapping of tokenIds to whether they have been used to sign up
AlreadyRegistered
error AlreadyRegistered()
custom errors
NotTokenOwner
error NotTokenOwner()
OnlyMACI
error OnlyMACI()
constructor
constructor(contract SignUpToken _token) public payable
creates a new SignUpTokenGatekeeper
Parameters
| Name | Type | Description |
|---|---|---|
| _token | contract SignUpToken | the address of the SignUpToken contract |
setMaciInstance
function setMaciInstance(address _maci) public
Adds an uninitialised MACI instance to allow for token signups
Parameters
| Name | Type | Description |
|---|---|---|
| _maci | address | The MACI contract interface to be stored |
register
function register(address _user, bytes _data) public
Registers the user if they own the token with the token ID encoded in _data. Throws if the user does not own the token or if the token has already been used to sign up.
Parameters
| Name | Type | Description |
|---|---|---|
| _user | address | The user's Ethereum address. |
| _data | bytes | The ABI-encoded tokenId as a uint256. |