MasterChefV3 API

PoolInfo

struct PoolInfo {
  uint256 allocPoint;
  ICryptoV3Pool v3Pool;
  address token0;
  address token1;
  uint24 fee;
  uint256 totalLiquidity;
  uint256 totalBoostLiquidity;
}

UserPositionInfo

struct UserPositionInfo {
  uint128 liquidity;
  uint128 boostLiquidity;
  int24 tickLower;
  int24 tickUpper;
  uint256 rewardGrowthInside;
  uint256 reward;
  address user;
  uint256 pid;
  uint256 boostMultiplier;
}

poolLength

uint256 poolLength

poolInfo

mapping(uint256 => PoolInfo) poolInfo

Info of each MCV3 pool.

userPositionInfos

mapping(uint256 => UserPositionInfo) userPositionInfos

userPositionInfos[tokenId] => UserPositionInfo

TokenId is unique, and we can query the pid by tokenId.

v3PoolPid

mapping(address => mapping(address => mapping(uint24 => uint256))) v3PoolPid

v3PoolPid[token0][token1][fee] => pid

v3PoolAddressPid

mapping(address => uint256) v3PoolAddressPid

v3PoolAddressPid[v3PoolAddress] => pid

CST

IERC20 CST

Address of CST contract.

WETH

address WETH

Address of WETH contract.

receiver

address receiver

Address of Receiver contract.

nonfungiblePositionManager

INonfungiblePositionManager nonfungiblePositionManager

LMPoolDeployer

ILMPoolDeployer LMPoolDeployer

Address of liquidity mining pool deployer contract.

FARM_BOOSTER

IFarmBooster FARM_BOOSTER

Address of farm booster contract.

emergency

bool emergency

Only use for emergency situations.

totalAllocPoint

uint256 totalAllocPoint

Total allocation points. Must be the sum of all pools' allocation points.

latestPeriodNumber

uint256 latestPeriodNumber

latestPeriodStartTime

uint256 latestPeriodStartTime

latestPeriodEndTime

uint256 latestPeriodEndTime

latestPeriodcryptoPerSecond

uint256 latestPeriodcryptoPerSecond

operatorAddress

address operatorAddress

Address of the operator.

PERIOD_DURATION

uint256 PERIOD_DURATION

Default period duration.

MAX_DURATION

uint256 MAX_DURATION

MIN_DURATION

uint256 MIN_DURATION

PRECISION

uint256 PRECISION

BOOST_PRECISION

uint256 BOOST_PRECISION

Basic boost factor, none boosted user's boost factor

MAX_BOOST_PRECISION

uint256 MAX_BOOST_PRECISION

Hard limit for maxmium boost factor, it must greater than BOOST_PRECISION

Q128

uint256 Q128

MAX_U256

uint256 MAX_U256

cryptoAmountBelongToMC

uint256 cryptoAmountBelongToMC

Record the CST amount belong to

constructor

constructor(IERC20 _crypto, INonfungiblePositionManager _nonfungiblePositionManager, address _WETH) public

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _crypto | IERC20 | The CST token contract address. | | _nonfungiblePositionManager | INonfungiblePositionManager | the NFT position manager contract address. | | _WETH | address | |

getLatestPeriodInfoByPid

function getLatestPeriodInfoByPid(uint256 _pid) public view returns (uint256 cryptoPerSecond, uint256 endTime)

Returns the CST per second , period end time.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _pid | uint256 | The pool pid. |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | cryptoPerSecond | uint256 | CST reward per second. | | endTime | uint256 | Period end time. |

getLatestPeriodInfo

function getLatestPeriodInfo(address _v3Pool) public view returns (uint256 cryptoPerSecond, uint256 endTime)

Returns the CST per second , period end time. This is for liquidity mining pool.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _v3Pool | address | Address of the V3 pool. |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | cryptoPerSecond | uint256 | CST reward per second. | | endTime | uint256 | Period end time. |

pendingcrypto

function pendingcrypto(uint256 _tokenId) external view returns (uint256 reward)

View function for checking pending CST rewards.

The pending CST amount is based on the last state in LMPool. The actual amount will happen whenever liquidity changes or harvest.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _tokenId | uint256 | Token Id of NFT. |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | reward | uint256 | Pending reward. |

setEmergency

function setEmergency(bool _emergency) external

For emergency use only.

setReceiver

function setReceiver(address _receiver) external

setLMPoolDeployer

function setLMPoolDeployer(ILMPoolDeployer _LMPoolDeployer) external

add

function add(uint256 _allocPoint, ICryptoV3Pool _v3Pool, bool _withUpdate) external

Add a new pool. Can only be called by the owner. One v3 pool can only create one pool.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _allocPoint | uint256 | Number of allocation points for the new pool. | | _v3Pool | ICryptoV3Pool | Address of the V3 pool. | | _withUpdate | bool | Whether call "massUpdatePools" operation. |

set

function set(uint256 _pid, uint256 _allocPoint, bool _withUpdate) external

Update the given pool's CST allocation point. Can only be called by the owner.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _pid | uint256 | The id of the pool. See poolInfo. | | _allocPoint | uint256 | New number of allocation points for the pool. | | _withUpdate | bool | Whether call "massUpdatePools" operation. |

onERC721Received

function onERC721Received(address, address _from, uint256 _tokenId, bytes) external returns (bytes4)

Upon receiving a ERC721

harvest

function harvest(uint256 _tokenId, address _to) external returns (uint256 reward)

harvest CST from pool.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _tokenId | uint256 | Token Id of NFT. | | _to | address | Address to. |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | reward | uint256 | CST reward. |

withdraw

function withdraw(uint256 _tokenId, address _to) external returns (uint256 reward)

Withdraw LP tokens from pool.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _tokenId | uint256 | Token Id of NFT to deposit. | | _to | address | Address to which NFT token to withdraw. |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | reward | uint256 | CST reward. |

updateLiquidity

function updateLiquidity(uint256 _tokenId) external

Update liquidity for the NFT position.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _tokenId | uint256 | Token Id of NFT to update. |

updateBoostMultiplier

function updateBoostMultiplier(uint256 _tokenId, uint256 _newMultiplier) external

Update farm boost multiplier for the NFT position.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _tokenId | uint256 | Token Id of NFT to update. | | _newMultiplier | uint256 | New boost multiplier. |

IncreaseLiquidityParams

struct IncreaseLiquidityParams {
  uint256 tokenId;
  uint256 amount0Desired;
  uint256 amount1Desired;
  uint256 amount0Min;
  uint256 amount1Min;
  uint256 deadline;
}

increaseLiquidity

function increaseLiquidity(struct IncreaseLiquidityParams params) external payable returns (uint128 liquidity, uint256 amount0, uint256 amount1)

Increases the amount of liquidity in a position, with tokens paid by the msg.sender

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | params | struct IncreaseLiquidityParams | tokenId The ID of the token for which liquidity is being increased, amount0Desired The desired amount of token0 to be spent, amount1Desired The desired amount of token1 to be spent, amount0Min The minimum amount of token0 to spend, which serves as a slippage check, amount1Min The minimum amount of token1 to spend, which serves as a slippage check, deadline The time by which the transaction must be included to effect the change |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | liquidity | uint128 | The new liquidity amount as a result of the increase | | amount0 | uint256 | The amount of token0 to acheive resulting liquidity | | amount1 | uint256 | The amount of token1 to acheive resulting liquidity |

DecreaseLiquidityParams

struct DecreaseLiquidityParams {
  uint256 tokenId;
  uint128 liquidity;
  uint256 amount0Min;
  uint256 amount1Min;
  uint256 deadline;
}

decreaseLiquidity

function decreaseLiquidity(struct DecreaseLiquidityParams params) external returns (uint256 amount0, uint256 amount1)

Decreases the amount of liquidity in a position and accounts it to the position

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | params | struct DecreaseLiquidityParams | tokenId The ID of the token for which liquidity is being decreased, amount The amount by which liquidity will be decreased, amount0Min The minimum amount of token0 that should be accounted for the burned liquidity, amount1Min The minimum amount of token1 that should be accounted for the burned liquidity, deadline The time by which the transaction must be included to effect the change |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | amount0 | uint256 | The amount of token0 accounted to the position's tokens owed | | amount1 | uint256 | The amount of token1 accounted to the position's tokens owed |

CollectParams

struct CollectParams {
  uint256 tokenId;
  address recipient;
  uint128 amount0Max;
  uint128 amount1Max;
}

collect

function collect(struct CollectParams params) external returns (uint256 amount0, uint256 amount1)

Collects up to a maximum amount of fees owed to a specific position to the recipient

Warning!!! Please make sure to use multicall to call unwrapWETH9 or sweepToken when set recipient address(0), or you will lose your funds. amount0Max The maximum amount of token0 to collect, amount1Max The maximum amount of token1 to collect

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | params | struct CollectParams | tokenId The ID of the NFT for which tokens are being collected, recipient The account that should receive the tokens, |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | amount0 | uint256 | The amount of fees collected in token0 | | amount1 | uint256 | The amount of fees collected in token1 |

collectTo

function collectTo(struct CollectParams params, address to) external returns (uint256 amount0, uint256 amount1)

Collects up to a maximum amount of fees owed to a specific position to the recipient, then refund.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | params | struct CollectParams | CollectParams. | | to | address | Refund recipient. |

Return Values

| Name | Type | Description | | ---- | ---- | ----------- | | amount0 | uint256 | The amount of fees collected in token0 | | amount1 | uint256 | The amount of fees collected in token1 |

unwrapWETH9

function unwrapWETH9(uint256 amountMinimum, address recipient) external

Unwraps the contract's WETH9 balance and sends it to recipient as ETH.

The amountMinimum parameter prevents malicious contracts from stealing WETH9 from users.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | amountMinimum | uint256 | The minimum amount of WETH9 to unwrap | | recipient | address | The address receiving ETH |

sweepToken

function sweepToken(address token, uint256 amountMinimum, address recipient) external

Transfers the full amount of a token held by this contract to recipient

The amountMinimum parameter prevents malicious contracts from stealing the token from users

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | token | address | The contract address of the token which will be transferred to recipient | | amountMinimum | uint256 | The minimum amount of token required for a transfer | | recipient | address | The destination address of the token |

burn

function burn(uint256 _tokenId) external

Burns a token ID, which deletes it from the NFT contract. The token must have 0 liquidity and all tokens must be collected first.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _tokenId | uint256 | The ID of the token that is being burned |

upkeep

function upkeep(uint256 _amount, uint256 _duration, bool _withUpdate) external

Upkeep period.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _amount | uint256 | The amount of CST injected. | | _duration | uint256 | The period duration. | | _withUpdate | bool | Whether call "massUpdatePools" operation. |

updatePools

function updatePools(uint256[] pids) external

Update CST reward for the liquidity mining pool.

Avoid too many pools, and a single transaction cannot be fully executed for all pools.

setOperator

function setOperator(address _operatorAddress) external

Set operator address.

Callable by owner

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _operatorAddress | address | New operator address. |

setPeriodDuration

function setPeriodDuration(uint256 _periodDuration) external

Set period duration.

Callable by owner

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _periodDuration | uint256 | New period duration. |

updateFarmBoostContract

function updateFarmBoostContract(address _newFarmBoostContract) external

Update farm boost contract address.

Parameters

| Name | Type | Description | | ---- | ---- | ----------- | | _newFarmBoostContract | address | The new farm booster address. |

ZeroAddress

error ZeroAddress()

NotOwnerOrOperator

error NotOwnerOrOperator()

NoBalance

error NoBalance()

NotCryptoNFT

error NotCryptoNFT()

InvalidNFT

error InvalidNFT()

NotOwner

error NotOwner()

NoLiquidity

error NoLiquidity()

InvalidPeriodDuration

error InvalidPeriodDuration()

NoLMPool

error NoLMPool()

InvalidPid

error InvalidPid()

DuplicatedPool

error DuplicatedPool(uint256 pid)

NotEmpty

error NotEmpty()

WrongReceiver

error WrongReceiver()

InconsistentAmount

error InconsistentAmount()

InsufficientAmount

error InsufficientAmount()

Init

event Init()

AddPool

event AddPool(uint256 pid, uint256 allocPoint, ICryptoV3Pool v3Pool, ILMPool lmPool)

SetPool

event SetPool(uint256 pid, uint256 allocPoint)

Deposit

event Deposit(address from, uint256 pid, uint256 tokenId, uint256 liquidity, int24 tickLower, int24 tickUpper)

Withdraw

event Withdraw(address from, address to, uint256 pid, uint256 tokenId)

UpdateLiquidity

event UpdateLiquidity(address from, uint256 pid, uint256 tokenId, int128 liquidity, int24 tickLower, int24 tickUpper)

NewOperatorAddress

event NewOperatorAddress(address operator)

NewLMPoolDeployerAddress

event NewLMPoolDeployerAddress(address deployer)

NewReceiver

event NewReceiver(address receiver)

NewPeriodDuration

event NewPeriodDuration(uint256 periodDuration)

Harvest

event Harvest(address sender, address to, uint256 pid, uint256 tokenId, uint256 reward)

NewUpkeepPeriod

event NewUpkeepPeriod(uint256 periodNumber, uint256 startTime, uint256 endTime, uint256 cryptoPerSecond, uint256 cryptoAmount)

UpdateUpkeepPeriod

event UpdateUpkeepPeriod(uint256 periodNumber, uint256 oldEndTime, uint256 newEndTime, uint256 remainingcrypto)

UpdateFarmBoostContract

event UpdateFarmBoostContract(address farmBoostContract)

SetEmergency

event SetEmergency(bool emergency)