Contract 0xdcaeee2731b488328e43693d8b8f948e56c2eaed

Txn Hash Method
Block
From
To
Value [Txn Fee]
0x9e1e3433cedb370178fb8ee74455047a7fdfd084a1033d02a878fd86c2568983Create Vault Tok...319429002022-02-25 15:07:50132 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM9.07995162
0x05d9e24f69f0285ad89ae4cc9162fda07dc9383ff4e5e84ad3a0caacb7155cf6Create Vault Tok...306676902022-02-11 18:09:24145 days 22 hrs agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.97499556
0x7ec041d8d5c074b01a2f76ad747a6cfbd548ec5a1906beaf17169936cdeaad5fCreate Vault Tok...306676852022-02-11 18:09:18145 days 22 hrs agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.97499556
0x83704666c79bb6a73acc9a96b5a8dcd18b8eaff10e78ff6ec0c0e022057a4c50Create Vault Tok...291123562022-01-26 15:47:38162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.536955471497
0xe8afb1d8522fe248b99a2687582087808051240b7eb89218a8aa42a1971377aaCreate Vault Tok...291123482022-01-26 15:47:32162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.529430799881
0xb550595df07b43bcff52b402b0d96be176fea9309917611e2a3834c6f88dae5eCreate Vault Tok...291123382022-01-26 15:47:24162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.517597794944
0x84efdb80583fae269829c58abbae1f100c95f8cbc9f406cce72eb1ef615d8c6cCreate Vault Tok...291123362022-01-26 15:47:19162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.501419750969
0xd9a5b315c0fdf65c44b65176e96b1706288008ae7598628ae0c5cef6009bb28aCreate Vault Tok...291123272022-01-26 15:47:12162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.482557601571
0x6fbee84c758402d6a7322b4c4064abd30a86f4e326eee1fa1cae2d662d5afd3aCreate Vault Tok...291123182022-01-26 15:47:04162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.478671383974
0x14d3d0bd1f1a4da6ca1b67c33f6c079f9703225ead455037d04ae40108a43eeeCreate Vault Tok...291123122022-01-26 15:46:59162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.466452969027
0xd39fada3205db7345ab53bdfab91c4e0d95d296dfb6509158c7bd788a199b3d9Create Vault Tok...291123042022-01-26 15:46:53162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.461525226761
0x1cab9002613aa52afb434ebb157442578c564011aaf69db5f17a64b95d3534eaCreate Vault Tok...291122962022-01-26 15:46:47162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.455133844102
0xf1aa3fcb74448a66ee4d8a88de4f38ea83ca3edaafcac9320c33329b24408a50Create Vault Tok...291122912022-01-26 15:46:42162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.422543757219
0x8cc5e408659a080a9c186a609e934054c2e9aaf59f1c585242dde3bbc095c2d2Create Vault Tok...291122762022-01-26 15:46:28162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.411472395872
0x2257f4397d3cf48d9360c9ad3a61bed3cebca6bd33d5b7226fdcc8c9e9d925a8Create Vault Tok...291122712022-01-26 15:46:21162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.382309705145
0xb0cd2c426a8f93329c846d40ab266d1c2f175f4ef1e25ce563be4d02bc02e5d7Create Vault Tok...291122642022-01-26 15:46:15162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.576230586761
0x005ceabd24e25cf60e8eb64a9f20a12f867ccf8c0cc0b1b4b0bf8817f3ea5917Create Vault Tok...291122332022-01-26 15:45:37162 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.372513867401
0x53889aaeff9201854d3c2e2cee6e7faff2e1f7cc17ae7f55ca8b99edbc411e65Create Vault Tok...287767342022-01-23 1:51:56165 days 15 hrs agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.106855680114
0x2a8d554781e86576de5ddbabe45ea5494a5ff6c54d73809bb01284ad48231ea9Create Vault Tok...225269802021-11-19 16:55:40230 days 2 mins agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.954803093951
0x0e94986476262b31729d9534abae15a34dcd9910f575130e222464b0fd3e88eaCreate Vault Tok...223316622021-11-17 15:58:03232 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.637278012633
0x826585c9080cd773655b117bfcdec0f946f15f8b5ef5519f8f2049fd4920128eCreate Vault Tok...223316512021-11-17 15:57:55232 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.637278012633
0x9940ba4a2916501b44964386025d2488a78c84f65c868f17bb18e63000e00553Create Vault Tok...223316412021-11-17 15:57:47232 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.637278012633
0x148c51fef87bf69a2cf248a36d8a61614775f8d6800613af23fd74724af01b78Create Vault Tok...223316342021-11-17 15:57:41232 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.637278012633
0xe11e2eaf87ee2d8f062791a978c610d2c8a55a8b7d5dbe7ee25f511577977963Create Vault Tok...223316152021-11-17 15:57:25232 days 1 hr agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM0.637278012633
0x89eb1560872af47ce688c37ca2e2003f812216de01d333adb634da47faa9dae8Create Vault Tok...189328952021-10-12 17:59:20267 days 22 hrs agoTarot: Deployer IN  0xdcaeee2731b488328e43693d8b8f948e56c2eaed0 FTM1.153526470733
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0x9e1e3433cedb370178fb8ee74455047a7fdfd084a1033d02a878fd86c2568983319429002022-02-25 15:07:50132 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x05d9e24f69f0285ad89ae4cc9162fda07dc9383ff4e5e84ad3a0caacb7155cf6306676902022-02-11 18:09:24145 days 22 hrs ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x7ec041d8d5c074b01a2f76ad747a6cfbd548ec5a1906beaf17169936cdeaad5f306676852022-02-11 18:09:18145 days 22 hrs ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x83704666c79bb6a73acc9a96b5a8dcd18b8eaff10e78ff6ec0c0e022057a4c50291123562022-01-26 15:47:38162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xe8afb1d8522fe248b99a2687582087808051240b7eb89218a8aa42a1971377aa291123482022-01-26 15:47:32162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xb550595df07b43bcff52b402b0d96be176fea9309917611e2a3834c6f88dae5e291123382022-01-26 15:47:24162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x84efdb80583fae269829c58abbae1f100c95f8cbc9f406cce72eb1ef615d8c6c291123362022-01-26 15:47:19162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xd9a5b315c0fdf65c44b65176e96b1706288008ae7598628ae0c5cef6009bb28a291123272022-01-26 15:47:12162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x6fbee84c758402d6a7322b4c4064abd30a86f4e326eee1fa1cae2d662d5afd3a291123182022-01-26 15:47:04162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x14d3d0bd1f1a4da6ca1b67c33f6c079f9703225ead455037d04ae40108a43eee291123122022-01-26 15:46:59162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xd39fada3205db7345ab53bdfab91c4e0d95d296dfb6509158c7bd788a199b3d9291123042022-01-26 15:46:53162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x1cab9002613aa52afb434ebb157442578c564011aaf69db5f17a64b95d3534ea291122962022-01-26 15:46:47162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xf1aa3fcb74448a66ee4d8a88de4f38ea83ca3edaafcac9320c33329b24408a50291122912022-01-26 15:46:42162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x8cc5e408659a080a9c186a609e934054c2e9aaf59f1c585242dde3bbc095c2d2291122762022-01-26 15:46:28162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x2257f4397d3cf48d9360c9ad3a61bed3cebca6bd33d5b7226fdcc8c9e9d925a8291122712022-01-26 15:46:21162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xb0cd2c426a8f93329c846d40ab266d1c2f175f4ef1e25ce563be4d02bc02e5d7291122642022-01-26 15:46:15162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x005ceabd24e25cf60e8eb64a9f20a12f867ccf8c0cc0b1b4b0bf8817f3ea5917291122332022-01-26 15:45:37162 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x53889aaeff9201854d3c2e2cee6e7faff2e1f7cc17ae7f55ca8b99edbc411e65287767342022-01-23 1:51:56165 days 15 hrs ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x2a8d554781e86576de5ddbabe45ea5494a5ff6c54d73809bb01284ad48231ea9225269802021-11-19 16:55:40230 days 2 mins ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x0e94986476262b31729d9534abae15a34dcd9910f575130e222464b0fd3e88ea223316622021-11-17 15:58:03232 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x826585c9080cd773655b117bfcdec0f946f15f8b5ef5519f8f2049fd4920128e223316512021-11-17 15:57:55232 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x9940ba4a2916501b44964386025d2488a78c84f65c868f17bb18e63000e00553223316412021-11-17 15:57:47232 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x148c51fef87bf69a2cf248a36d8a61614775f8d6800613af23fd74724af01b78223316342021-11-17 15:57:41232 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0xe11e2eaf87ee2d8f062791a978c610d2c8a55a8b7d5dbe7ee25f511577977963223316152021-11-17 15:57:25232 days 1 hr ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
0x89eb1560872af47ce688c37ca2e2003f812216de01d333adb634da47faa9dae8189328952021-10-12 17:59:20267 days 22 hrs ago 0xdcaeee2731b488328e43693d8b8f948e56c2eaed  Contract Creation0 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
VaultTokenFactory

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 14 : VaultTokenFactory.sol
pragma solidity =0.5.16;

import "./VaultToken.sol";
import "./interfaces/IMasterChef.sol";
import "./interfaces/IVaultTokenFactory.sol";
import "./interfaces/IUniswapV2Pair.sol";
import "./interfaces/IUniswapV2Router01.sol";

contract VaultTokenFactory is IVaultTokenFactory {
    address public router;
    address public masterChef;
    address public rewardsToken;
    uint256 public swapFeeFactor;

    mapping(uint256 => address) public getVaultToken;
    address[] public allVaultTokens;

    event VaultTokenCreated(
        uint256 indexed pid,
        address vaultToken,
        uint256 vaultTokenIndex
    );

    constructor(
        address _router,
        address _masterChef,
        address _rewardsToken,
        uint256 _swapFeeFactor
    ) public {
        require(
            _swapFeeFactor >= 900 && _swapFeeFactor <= 1000,
            "VaultTokenFactory: INVALID_FEE_FACTOR"
        );
        router = _router;
        masterChef = _masterChef;
        rewardsToken = _rewardsToken;
        swapFeeFactor = _swapFeeFactor;
    }

    function allVaultTokensLength() external view returns (uint256) {
        return allVaultTokens.length;
    }

    function createVaultToken(uint256 pid)
        external
        returns (address vaultToken)
    {
        require(
            getVaultToken[pid] == address(0),
            "VaultTokenFactory: PID_EXISTS"
        );
        bytes memory bytecode = type(VaultToken).creationCode;
        assembly {
            vaultToken := create2(0, add(bytecode, 32), mload(bytecode), pid)
        }
        VaultToken(vaultToken)._initialize(
            IUniswapV2Router01(router),
            IMasterChef(masterChef),
            rewardsToken,
            swapFeeFactor,
            pid
        );
        getVaultToken[pid] = vaultToken;
        allVaultTokens.push(vaultToken);
        emit VaultTokenCreated(pid, vaultToken, allVaultTokens.length);
    }
}

File 2 of 14 : VaultToken.sol
pragma solidity =0.5.16;

import "./PoolToken.sol";
import "./interfaces/IMasterChef.sol";
import "./interfaces/IVaultToken.sol";
import "./interfaces/IERC20.sol";
import "./interfaces/IUniswapV2Router01.sol";
import "./interfaces/IUniswapV2Pair.sol";
import "./libraries/SafeToken.sol";
import "./libraries/Math.sol";

contract VaultToken is IVaultToken, IUniswapV2Pair, PoolToken {
    using SafeToken for address;

    bool public constant isVaultToken = true;

    IUniswapV2Router01 public router;
    IMasterChef public masterChef;
    address public rewardsToken;
    address public WETH;
    address public token0;
    address public token1;
    uint256 public swapFeeFactor;
    uint256 public pid;
    uint256 public constant REINVEST_BOUNTY = 0.01e18;

    event Reinvest(address indexed caller, uint256 reward, uint256 bounty);

    function _initialize(
        IUniswapV2Router01 _router,
        IMasterChef _masterChef,
        address _rewardsToken,
        uint256 _swapFeeFactor,
        uint256 _pid
    ) external {
        require(factory == address(0), "VaultToken: FACTORY_ALREADY_SET"); // sufficient check
        factory = msg.sender;
        _setName("Tarot Vault Token", "vTAROT");
        WETH = _router.WETH();
        router = _router;
        masterChef = _masterChef;
        swapFeeFactor = _swapFeeFactor;
        pid = _pid;
        (IERC20 _underlying, , , ) = masterChef.poolInfo(_pid);
        underlying = address(_underlying);
        token0 = IUniswapV2Pair(underlying).token0();
        token1 = IUniswapV2Pair(underlying).token1();
        rewardsToken = _rewardsToken;
        rewardsToken.safeApprove(address(router), uint256(-1));
        WETH.safeApprove(address(router), uint256(-1));
        underlying.safeApprove(address(masterChef), uint256(-1));
    }

    /*** PoolToken Overrides ***/

    function _update() internal {
        (uint256 _totalBalance, ) = masterChef.userInfo(pid, address(this));
        totalBalance = _totalBalance;
        emit Sync(totalBalance);
    }

    // this low-level function should be called from another contract
    function mint(address minter)
        external
        nonReentrant
        update
        returns (uint256 mintTokens)
    {
        uint256 mintAmount = underlying.myBalance();
        // handle pools with deposit fees by checking balance before and after deposit
        (uint256 _totalBalanceBefore, ) = masterChef.userInfo(
            pid,
            address(this)
        );
        masterChef.deposit(pid, mintAmount);
        (uint256 _totalBalanceAfter, ) = masterChef.userInfo(
            pid,
            address(this)
        );

        mintTokens = _totalBalanceAfter.sub(_totalBalanceBefore).mul(1e18).div(
            exchangeRate()
        );

        if (totalSupply == 0) {
            // permanently lock the first MINIMUM_LIQUIDITY tokens
            mintTokens = mintTokens.sub(MINIMUM_LIQUIDITY);
            _mint(address(0), MINIMUM_LIQUIDITY);
        }
        require(mintTokens > 0, "VaultToken: MINT_AMOUNT_ZERO");
        _mint(minter, mintTokens);
        emit Mint(msg.sender, minter, mintAmount, mintTokens);
    }

    // this low-level function should be called from another contract
    function redeem(address redeemer)
        external
        nonReentrant
        update
        returns (uint256 redeemAmount)
    {
        uint256 redeemTokens = balanceOf[address(this)];
        redeemAmount = redeemTokens.mul(exchangeRate()).div(1e18);

        require(redeemAmount > 0, "VaultToken: REDEEM_AMOUNT_ZERO");
        require(redeemAmount <= totalBalance, "VaultToken: INSUFFICIENT_CASH");
        _burn(address(this), redeemTokens);
        masterChef.withdraw(pid, redeemAmount);
        _safeTransfer(redeemer, redeemAmount);
        emit Redeem(msg.sender, redeemer, redeemAmount, redeemTokens);
    }

    /*** Reinvest ***/

    function _optimalDepositA(
        uint256 _amountA,
        uint256 _reserveA,
        uint256 _swapFeeFactor
    ) internal pure returns (uint256) {
        uint256 a = uint256(1000).add(_swapFeeFactor).mul(_reserveA);
        uint256 b = _amountA.mul(1000).mul(_reserveA).mul(4).mul(
            _swapFeeFactor
        );
        uint256 c = Math.sqrt(a.mul(a).add(b));
        uint256 d = uint256(2).mul(_swapFeeFactor);
        return c.sub(a).div(d);
    }

    function approveRouter(address token, uint256 amount) internal {
        if (IERC20(token).allowance(address(this), address(router)) >= amount)
            return;
        token.safeApprove(address(router), uint256(-1));
    }

    function swapExactTokensForTokens(
        address tokenIn,
        address tokenOut,
        uint256 amount
    ) internal {
        address[] memory path = new address[](2);
        path[0] = address(tokenIn);
        path[1] = address(tokenOut);
        approveRouter(tokenIn, amount);
        router.swapExactTokensForTokens(amount, 0, path, address(this), now);
    }

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountA,
        uint256 amountB
    ) internal returns (uint256 liquidity) {
        approveRouter(tokenA, amountA);
        approveRouter(tokenB, amountB);
        (, , liquidity) = router.addLiquidity(
            tokenA,
            tokenB,
            amountA,
            amountB,
            0,
            0,
            address(this),
            now
        );
    }

    function reinvest() external nonReentrant update {
        require(msg.sender == tx.origin);
        // 1. Withdraw all the rewards.
        masterChef.withdraw(pid, 0);
        uint256 reward = rewardsToken.myBalance();
        if (reward == 0) return;
        // 2. Send the reward bounty to the caller.
        uint256 bounty = reward.mul(REINVEST_BOUNTY) / 1e18;
        rewardsToken.safeTransfer(msg.sender, bounty);
        // 3. Convert all the remaining rewards to token0 or token1.
        address tokenA;
        address tokenB;
        if (token0 == rewardsToken || token1 == rewardsToken) {
            (tokenA, tokenB) = token0 == rewardsToken
                ? (token0, token1)
                : (token1, token0);
        } else {
            swapExactTokensForTokens(rewardsToken, WETH, reward.sub(bounty));
            if (token0 == WETH || token1 == WETH) {
                (tokenA, tokenB) = token0 == WETH
                    ? (token0, token1)
                    : (token1, token0);
            } else {
                swapExactTokensForTokens(WETH, token0, WETH.myBalance());
                (tokenA, tokenB) = (token0, token1);
            }
        }
        // 4. Convert tokenA to LP Token underlyings.
        uint256 totalAmountA = tokenA.myBalance();
        assert(totalAmountA > 0);
        (uint256 r0, uint256 r1, ) = IUniswapV2Pair(underlying).getReserves();
        uint256 reserveA = tokenA == token0 ? r0 : r1;
        uint256 swapAmount = _optimalDepositA(
            totalAmountA,
            reserveA,
            swapFeeFactor
        );
        swapExactTokensForTokens(tokenA, tokenB, swapAmount);
        uint256 liquidity = addLiquidity(
            tokenA,
            tokenB,
            totalAmountA.sub(swapAmount),
            tokenB.myBalance()
        );
        // 5. Stake the LP Tokens.
        masterChef.deposit(pid, liquidity);
        emit Reinvest(msg.sender, reward, bounty);
    }

    /*** Mirrored From uniswapV2Pair ***/

    function getReserves()
        external
        view
        returns (
            uint112 reserve0,
            uint112 reserve1,
            uint32 blockTimestampLast
        )
    {
        (reserve0, reserve1, blockTimestampLast) = IUniswapV2Pair(underlying)
        .getReserves();
        // if no token has been minted yet mirror uniswap getReserves
        if (totalSupply == 0) return (reserve0, reserve1, blockTimestampLast);
        // else, return the underlying reserves of this contract
        uint256 _totalBalance = totalBalance;
        uint256 _totalSupply = IUniswapV2Pair(underlying).totalSupply();
        reserve0 = safe112(_totalBalance.mul(reserve0).div(_totalSupply));
        reserve1 = safe112(_totalBalance.mul(reserve1).div(_totalSupply));
        require(
            reserve0 > 100 && reserve1 > 100,
            "VaultToken: INSUFFICIENT_RESERVES"
        );
    }

    function price0CumulativeLast() external view returns (uint256) {
        return IUniswapV2Pair(underlying).price0CumulativeLast();
    }

    function price1CumulativeLast() external view returns (uint256) {
        return IUniswapV2Pair(underlying).price1CumulativeLast();
    }

    /*** Utilities ***/

    function safe112(uint256 n) internal pure returns (uint112) {
        require(n < 2**112, "VaultToken: SAFE112");
        return uint112(n);
    }
}

File 3 of 14 : IMasterChef.sol
pragma solidity 0.5.16;

import "./IERC20.sol";

// Making the original MasterChef as an interface leads to compilation fail.
// Use Contract instead of Interface here
contract IMasterChef {
    // Info of each user.
    struct UserInfo {
        uint256 amount; // How many LP tokens the user has provided.
        uint256 rewardDebt; // Reward debt. See explanation below.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken; // Address of LP token contract.
        uint256 allocPoint; // How many allocation points assigned to this pool. Reward tokens to distribute per block.
        uint256 lastRewardBlock; // Last block number that reward token distribution occurs.
        uint256 accRewardTokenPerShare; // Accumulated reward tokens per share, times 1e12. See below.
    }

    // Info of each user that stakes LP tokens.
    mapping(uint256 => PoolInfo) public poolInfo;
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;

    // Deposit LP tokens to MasterChef.
    function deposit(uint256 _pid, uint256 _amount) external {}

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) external {}
}

File 4 of 14 : IVaultTokenFactory.sol
pragma solidity >=0.5.0;

interface IVaultTokenFactory {
    event VaultTokenCreated(
        uint256 indexed pid,
        address vaultToken,
        uint256 vaultTokenIndex
    );

    function router() external view returns (address);

    function masterChef() external view returns (address);

    function rewardsToken() external view returns (address);

    function swapFeeFactor() external view returns (uint256);

    function getVaultToken(uint256) external view returns (address);

    function allVaultTokens(uint256) external view returns (address);

    function allVaultTokensLength() external view returns (uint256);

    function createVaultToken(uint256 pid)
        external
        returns (address vaultToken);
}

File 5 of 14 : IUniswapV2Pair.sol
pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 value);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 reserve0,
            uint112 reserve1,
            uint32 blockTimestampLast
        );

    function price0CumulativeLast() external view returns (uint256);

    function price1CumulativeLast() external view returns (uint256);
}

File 6 of 14 : IUniswapV2Router01.sol
pragma solidity >=0.5.0;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

File 7 of 14 : PoolToken.sol
pragma solidity =0.5.16;

import "./TarotERC20.sol";
import "./interfaces/IERC20.sol";
import "./interfaces/IPoolToken.sol";
import "./libraries/SafeMath.sol";

contract PoolToken is IPoolToken, TarotERC20 {
    uint256 internal constant initialExchangeRate = 1e18;
    address public underlying;
    address public factory;
    uint256 public totalBalance;
    uint256 public constant MINIMUM_LIQUIDITY = 1000;

    event Mint(
        address indexed sender,
        address indexed minter,
        uint256 mintAmount,
        uint256 mintTokens
    );
    event Redeem(
        address indexed sender,
        address indexed redeemer,
        uint256 redeemAmount,
        uint256 redeemTokens
    );
    event Sync(uint256 totalBalance);

    /*** Initialize ***/

    // called once by the factory
    function _setFactory() external {
        require(factory == address(0), "Tarot: FACTORY_ALREADY_SET");
        factory = msg.sender;
    }

    /*** PoolToken ***/

    function _update() internal {
        totalBalance = IERC20(underlying).balanceOf(address(this));
        emit Sync(totalBalance);
    }

    function exchangeRate() public view returns (uint256) {
        uint256 _totalSupply = totalSupply; // gas savings
        uint256 _totalBalance = totalBalance; // gas savings
        if (_totalSupply == 0 || _totalBalance == 0) return initialExchangeRate;
        return _totalBalance.mul(1e18).div(_totalSupply);
    }

    // this low-level function should be called from another contract
    function mint(address minter)
        external
        nonReentrant
        update
        returns (uint256 mintTokens)
    {
        uint256 balance = IERC20(underlying).balanceOf(address(this));
        uint256 mintAmount = balance.sub(totalBalance);
        mintTokens = mintAmount.mul(1e18).div(exchangeRate());

        if (totalSupply == 0) {
            // permanently lock the first MINIMUM_LIQUIDITY tokens
            mintTokens = mintTokens.sub(MINIMUM_LIQUIDITY);
            _mint(address(0), MINIMUM_LIQUIDITY);
        }
        require(mintTokens > 0, "Tarot: MINT_AMOUNT_ZERO");
        _mint(minter, mintTokens);
        emit Mint(msg.sender, minter, mintAmount, mintTokens);
    }

    // this low-level function should be called from another contract
    function redeem(address redeemer)
        external
        nonReentrant
        update
        returns (uint256 redeemAmount)
    {
        uint256 redeemTokens = balanceOf[address(this)];
        redeemAmount = redeemTokens.mul(exchangeRate()).div(1e18);

        require(redeemAmount > 0, "Tarot: REDEEM_AMOUNT_ZERO");
        require(redeemAmount <= totalBalance, "Tarot: INSUFFICIENT_CASH");
        _burn(address(this), redeemTokens);
        _safeTransfer(redeemer, redeemAmount);
        emit Redeem(msg.sender, redeemer, redeemAmount, redeemTokens);
    }

    // force real balance to match totalBalance
    function skim(address to) external nonReentrant {
        _safeTransfer(
            to,
            IERC20(underlying).balanceOf(address(this)).sub(totalBalance)
        );
    }

    // force totalBalance to match real balance
    function sync() external nonReentrant update {}

    /*** Utilities ***/

    // same safe transfer function used by UniSwapV2 (with fixed underlying)
    bytes4 private constant SELECTOR =
        bytes4(keccak256(bytes("transfer(address,uint256)")));

    function _safeTransfer(address to, uint256 amount) internal {
        (bool success, bytes memory data) = underlying.call(
            abi.encodeWithSelector(SELECTOR, to, amount)
        );
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "Tarot: TRANSFER_FAILED"
        );
    }

    // prevents a contract from calling itself, directly or indirectly.
    bool internal _notEntered = true;
    modifier nonReentrant() {
        require(_notEntered, "Tarot: REENTERED");
        _notEntered = false;
        _;
        _notEntered = true;
    }

    // update totalBalance with current balance
    modifier update() {
        _;
        _update();
    }
}

File 8 of 14 : IVaultToken.sol
pragma solidity >=0.5.0;

import "./IMasterChef.sol";
import "./IUniswapV2Router01.sol";

interface IVaultToken {
    /*** Tarot ERC20 ***/

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /*** Pool Token ***/

    event Mint(
        address indexed sender,
        address indexed minter,
        uint256 mintAmount,
        uint256 mintTokens
    );
    event Redeem(
        address indexed sender,
        address indexed redeemer,
        uint256 redeemAmount,
        uint256 redeemTokens
    );
    event Sync(uint256 totalBalance);

    function underlying() external view returns (address);

    function factory() external view returns (address);

    function totalBalance() external view returns (uint256);

    function MINIMUM_LIQUIDITY() external pure returns (uint256);

    function exchangeRate() external view returns (uint256);

    function mint(address minter) external returns (uint256 mintTokens);

    function redeem(address redeemer) external returns (uint256 redeemAmount);

    function skim(address to) external;

    function sync() external;

    function _setFactory() external;

    /*** VaultToken ***/

    event Reinvest(address indexed caller, uint256 reward, uint256 bounty);

    function isVaultToken() external pure returns (bool);

    function router() external view returns (IUniswapV2Router01);

    function masterChef() external view returns (IMasterChef);

    function rewardsToken() external view returns (address);

    function WETH() external view returns (address);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function swapFeeFactor() external view returns (uint256);

    function pid() external view returns (uint256);

    function REINVEST_BOUNTY() external pure returns (uint256);

    function getReserves()
        external
        view
        returns (
            uint112 reserve0,
            uint112 reserve1,
            uint32 blockTimestampLast
        );

    function price0CumulativeLast() external view returns (uint256);

    function price1CumulativeLast() external view returns (uint256);

    function _initialize(
        IUniswapV2Router01 _router,
        IMasterChef _masterChef,
        address _rewardsToken,
        uint256 _swapFeeFactor,
        uint256 _pid
    ) external;

    function reinvest() external;
}

File 9 of 14 : IERC20.sol
pragma solidity >=0.5.0;

interface IERC20 {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 value);

    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);
}

File 10 of 14 : SafeToken.sol
pragma solidity 0.5.16;

interface ERC20Interface {
    function balanceOf(address user) external view returns (uint256);
}

library SafeToken {
    function myBalance(address token) internal view returns (uint256) {
        return ERC20Interface(token).balanceOf(address(this));
    }

    function balanceOf(address token, address user)
        internal
        view
        returns (uint256)
    {
        return ERC20Interface(token).balanceOf(user);
    }

    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(0x095ea7b3, to, value)
        );
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "!safeApprove"
        );
    }

    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(0xa9059cbb, to, value)
        );
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "!safeTransfer"
        );
    }

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(0x23b872dd, from, to, value)
        );
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "!safeTransferFrom"
        );
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call.value(value)(new bytes(0));
        require(success, "!safeTransferETH");
    }
}

File 11 of 14 : Math.sol
pragma solidity =0.5.16;

// a library for performing various math operations
// forked from: https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/libraries/Math.sol

library Math {
    function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        z = x < y ? x : y;
    }

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}

File 12 of 14 : TarotERC20.sol
pragma solidity =0.5.16;

import "./libraries/SafeMath.sol";

// This contract is basically UniswapV2ERC20 with small modifications
// src: https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol

contract TarotERC20 {
    using SafeMath for uint256;

    string public name;
    string public symbol;
    uint8 public decimals = 18;
    uint256 public totalSupply;
    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    bytes32 public DOMAIN_SEPARATOR;
    mapping(address => uint256) public nonces;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    constructor() public {}

    function _setName(string memory _name, string memory _symbol) internal {
        name = _name;
        symbol = _symbol;
        uint256 chainId;
        assembly {
            chainId := chainid
        }
        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                keccak256(
                    "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
                ),
                keccak256(bytes(_name)),
                keccak256(bytes("1")),
                chainId,
                address(this)
            )
        );
    }

    function _mint(address to, uint256 value) internal {
        totalSupply = totalSupply.add(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(address(0), to, value);
    }

    function _burn(address from, uint256 value) internal {
        balanceOf[from] = balanceOf[from].sub(value);
        totalSupply = totalSupply.sub(value);
        emit Transfer(from, address(0), value);
    }

    function _approve(
        address owner,
        address spender,
        uint256 value
    ) private {
        allowance[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    function _transfer(
        address from,
        address to,
        uint256 value
    ) internal {
        balanceOf[from] = balanceOf[from].sub(
            value,
            "Tarot: TRANSFER_TOO_HIGH"
        );
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(from, to, value);
    }

    function approve(address spender, uint256 value) external returns (bool) {
        _approve(msg.sender, spender, value);
        return true;
    }

    function transfer(address to, uint256 value) external returns (bool) {
        _transfer(msg.sender, to, value);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool) {
        if (allowance[from][msg.sender] != uint256(-1)) {
            allowance[from][msg.sender] = allowance[from][msg.sender].sub(
                value,
                "Tarot: TRANSFER_NOT_ALLOWED"
            );
        }
        _transfer(from, to, value);
        return true;
    }

    function _checkSignature(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s,
        bytes32 typehash
    ) internal {
        require(deadline >= block.timestamp, "Tarot: EXPIRED");
        bytes32 digest = keccak256(
            abi.encodePacked(
                "\x19\x01",
                DOMAIN_SEPARATOR,
                keccak256(
                    abi.encode(
                        typehash,
                        owner,
                        spender,
                        value,
                        nonces[owner]++,
                        deadline
                    )
                )
            )
        );
        address recoveredAddress = ecrecover(digest, v, r, s);
        require(
            recoveredAddress != address(0) && recoveredAddress == owner,
            "Tarot: INVALID_SIGNATURE"
        );
    }

    // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 public constant PERMIT_TYPEHASH =
        0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external {
        _checkSignature(
            owner,
            spender,
            value,
            deadline,
            v,
            r,
            s,
            PERMIT_TYPEHASH
        );
        _approve(owner, spender, value);
    }
}

File 13 of 14 : IPoolToken.sol
pragma solidity >=0.5.0;

interface IPoolToken {
    /*** Tarot ERC20 ***/

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /*** Pool Token ***/

    event Mint(
        address indexed sender,
        address indexed minter,
        uint256 mintAmount,
        uint256 mintTokens
    );
    event Redeem(
        address indexed sender,
        address indexed redeemer,
        uint256 redeemAmount,
        uint256 redeemTokens
    );
    event Sync(uint256 totalBalance);

    function underlying() external view returns (address);

    function factory() external view returns (address);

    function totalBalance() external view returns (uint256);

    function MINIMUM_LIQUIDITY() external pure returns (uint256);

    function exchangeRate() external view returns (uint256);

    function mint(address minter) external returns (uint256 mintTokens);

    function redeem(address redeemer) external returns (uint256 redeemAmount);

    function skim(address to) external;

    function sync() external;

    function _setFactory() external;
}

File 14 of 14 : SafeMath.sol
pragma solidity =0.5.16;

// From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/Math.sol
// Subject to the MIT license.

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting with custom message on overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, errorMessage);

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on underflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot underflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction underflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on underflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot underflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, errorMessage);

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers.
     * Reverts on division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers.
     * Reverts with custom message on division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_router","type":"address"},{"internalType":"address","name":"_masterChef","type":"address"},{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"uint256","name":"_swapFeeFactor","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"address","name":"vaultToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"vaultTokenIndex","type":"uint256"}],"name":"VaultTokenCreated","type":"event"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"allVaultTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"allVaultTokensLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"pid","type":"uint256"}],"name":"createVaultToken","outputs":[{"internalType":"address","name":"vaultToken","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"getVaultToken","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"masterChef","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rewardsToken","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"router","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"swapFeeFactor","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000f491e7b69e4244ad4002bc14e878a34207e38c290000000000000000000000002b2929e785374c651a81a63878ab22742656dcdd000000000000000000000000841fad6eae12c286d1fd18d1d525dffa75c7effe00000000000000000000000000000000000000000000000000000000000003e6

-----Decoded View---------------
Arg [0] : _router (address): 0xf491e7b69e4244ad4002bc14e878a34207e38c29
Arg [1] : _masterChef (address): 0x2b2929e785374c651a81a63878ab22742656dcdd
Arg [2] : _rewardsToken (address): 0x841fad6eae12c286d1fd18d1d525dffa75c7effe
Arg [3] : _swapFeeFactor (uint256): 998

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000f491e7b69e4244ad4002bc14e878a34207e38c29
Arg [1] : 0000000000000000000000002b2929e785374c651a81a63878ab22742656dcdd
Arg [2] : 000000000000000000000000841fad6eae12c286d1fd18d1d525dffa75c7effe
Arg [3] : 00000000000000000000000000000000000000000000000000000000000003e6


Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Validator ID :
0 FTM

Amount Staked
0

Amount Delegated
0

Staking Total
0

Staking Start Epoch
0

Staking Start Time
0

Proof of Importance
0

Origination Score
0

Validation Score
0

Active
0

Online
0

Downtime
0 s
Address Amount claimed Rewards Created On Epoch Created On
Block Uncle Number Difficulty Gas Used Reward
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