Introduction

ACO Factory is an implementation of an upgradable proxy that follows the EIP-897. The proxy code is available in ACOProxy.sol. The implementation of the factory is responsible to create all the ACO tokens. The factory serves as a public registry and is used to look up all ACO tokens added to the system. It is also used to set the ACO tokens' implementation address used to deploy a new one. It also contains logic to turn on the protocol charge. At the moment there are no protocol fees.

Code

​ACOFactory.sol​

Address

The proxy for ACOFactory.sol is deployed at 0x176b98ab38d1aE8fF3F30bF07f9B93E26F559C17 on the Ethereum mainnet.

Events

SetFactoryAdmin

event SetFactoryAdmin(address indexed previousFactoryAdmin, address indexed newFactoryAdmin);

Emitted when the factory admin address has been changed.

• previousFactoryAdmin Address of the previous factory admin.

• newFactoryAdmin Address of the new factory admin.

SetAcoTokenImplementation

event SetAcoTokenImplementation(address indexed previousAcoTokenImplementation, address indexed newAcoTokenImplementation);

Emitted when the ACO token implementation has been changed.

• previousAcoTokenImplementation Address of the previous ACO token implementation.

• newAcoTokenImplementation Address of the new ACO token implementation.

SetAcoFee

event SetAcoFee(uint256 indexed previousAcoFee, uint256 indexed newAcoFee);

Emitted when the ACO fee has been changed.

• previousAcoFee Value of the previous ACO fee.

• newAcoFee Value of the new ACO fee.

SetAcoFeeDestination

event SetAcoFeeDestination(address indexed previousAcoFeeDestination, address indexed newAcoFeeDestination);

Emitted when the ACO fee destination address has been changed.

• previousAcoFeeDestination Address of the previous ACO fee destination.

• newAcoFeeDestination Address of the new ACO fee destination.

NewAcoToken

event NewAcoToken(address indexed underlying, address indexed strikeAsset, bool indexed isCall, uint256 strikePrice, uint256 expiryTime, address acoToken, address acoTokenImplementation);

Emitted when a new ACO token has been created.

• underlying Address of the underlying asset (address(0) for Ethereum).

• strikeAsset Address of the strike asset (address(0) for Ethereum).

• isCall True if the type is CALL, false for PUT.

• strikePrice The strike price with the strike asset precision.

• expiryTime The UNIX time for the ACO token expiration.

• acoToken Address of the new ACO token created.

• acoTokenImplementation Address of the ACO token implementation used on creation.

Read-Only Functions

factoryAdmin

function factoryAdmin() external view returns(address);

Returns the factory admin address.

acoTokenImplementation

function acoTokenImplementation() external view returns(address);

Returns the ACO token implementation address.

acoFee

function acoFee() external view returns(uint256);

Returns the ACO fee value used on creating new ACO tokens. It is a percentage value (100000 is 100%).

acoFeeDestination

function acoFeeDestination() external view returns(address);

Returns the ACO fee destination address used on creating new ACO tokens.

State-Changing Functions

init

function init(address _factoryAdmin, address _acoTokenImplementation, uint256 _acoFee, address _acoFeeDestination) external;

Function to initialize the contract. It should be called through the data argument when creating the proxy implementation. It must be called only once. The assert is to guarantee that behavior.

setFactoryAdmin

function setFactoryAdmin(address newFactoryAdmin) external;

Function to set the factory admin address. Only can be called by the factory admin.

• newFactoryAdmin Address of the new factory admin.

setAcoTokenImplementation

function setAcoTokenImplementation(address newAcoTokenImplementation) external;

Function to set the ACO token implementation address. Only can be called by the factory admin.

• newAcoTokenImplementation Address of the new ACO token implementation.

setAcoFee

function setAcoFee(uint256 newAcoFee) external;

Function to set the ACO fee. Only can be called by the factory admin.

• newAcoFee Value of the new ACO fee. It is a percentage value (100000 is 100%).

setAcoFeeDestination

function setAcoFeeDestination(address newAcoFeeDestination) external;

Function to set the ACO fee destination address. Only can be called by the factory admin.

• newAcoFeeDestination Address of the new ACO fee destination.

createAcoToken

function createAcoToken( address underlying, address strikeAsset, bool isCall, uint256 strikePrice, uint256 expiryTime, uint256 maxExercisedAccounts ) external;

Function to create a new ACO token. It deploys a minimal proxy for the ACO token implementation address. Currently, only can be called by the factory admin.

• underlying Address of the underlying asset (0x0 for Ethereum).

• strikeAsset Address of the strike asset (0x0 for Ethereum).

• isCall Whether the ACO token is the Call type. (False for Put)

• strikePrice The strike price with the strike asset precision.

• expiryTime The UNIX time for the ACO token expiration.

• maxExercisedAccounts The maximum number of accounts that can be exercised by a transaction.

ABI

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