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Contract

0x3a52e9200Ed7403D9d21664fDee540C2d02c099d

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0 ETH

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$0.00

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Transaction Hash
Method
Block
From
To
Create Swap Pair1123944762023-07-18 7:42:50876 days ago1689666170IN
Arbswap: Stableswap Factory
0 ETH0.000543220.1
Create Swap Pair1123936992023-07-18 7:39:36876 days ago1689665976IN
Arbswap: Stableswap Factory
0 ETH0.000546380.1
Create Swap Pair788437452023-04-10 1:45:18975 days ago1681091118IN
Arbswap: Stableswap Factory
0 ETH0.000566710.1
Create Swap Pair788436562023-04-10 1:44:55975 days ago1681091095IN
Arbswap: Stableswap Factory
0 ETH0.00056890.1

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Contract Source Code Verified (Exact Match)

Contract Name:
ArbswapStableSwapFactory

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 100 runs

Other Settings:
default evmVersion
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "@openzeppelin-4.5.0/contracts/access/Ownable.sol";
import "./interfaces/IArbswapStableSwap.sol";
import "./interfaces/IArbswapStableSwapLP.sol";
import "./interfaces/IArbswapStableSwapDeployer.sol";
import "./interfaces/IArbswapStableSwapLPFactory.sol";

contract ArbswapStableSwapFactory is Ownable {
    struct StableSwapPairInfo {
        address swapContract;
        address token0;
        address token1;
        address LPContract;
    }
    struct StableSwapThreePoolPairInfo {
        address swapContract;
        address token0;
        address token1;
        address token2;
        address LPContract;
    }

    mapping(address => mapping(address => mapping(address => StableSwapThreePoolPairInfo))) public stableSwapPairInfo;
    // Query three pool pair infomation by two tokens.
    mapping(address => mapping(address => StableSwapThreePoolPairInfo)) threePoolInfo;
    mapping(uint256 => address) public swapPairContract;

    IArbswapStableSwapLPFactory public immutable LPFactory;
    IArbswapStableSwapDeployer public immutable SwapTwoPoolDeployer;
    IArbswapStableSwapDeployer public immutable SwapThreePoolDeployer;

    address constant ZEROADDRESS = address(0);

    uint256 public pairLength;

    event NewStableSwapPair(address indexed swapContract, address tokenA, address tokenB, address tokenC, address LP);

    /**
     * @notice constructor
     * _LPFactory: LP factory
     * _SwapTwoPoolDeployer: Swap two pool deployer
     * _SwapThreePoolDeployer: Swap three pool deployer
     */
    constructor(
        IArbswapStableSwapLPFactory _LPFactory,
        IArbswapStableSwapDeployer _SwapTwoPoolDeployer,
        IArbswapStableSwapDeployer _SwapThreePoolDeployer
    ) {
        LPFactory = _LPFactory;
        SwapTwoPoolDeployer = _SwapTwoPoolDeployer;
        SwapThreePoolDeployer = _SwapThreePoolDeployer;
    }

    // returns sorted token addresses, used to handle return values from pairs sorted in this order
    function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
        require(tokenA != tokenB, "IDENTICAL_ADDRESSES");
        (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
    }

    function sortTokens(
        address tokenA,
        address tokenB,
        address tokenC
    )
        internal
        pure
        returns (
            address,
            address,
            address
        )
    {
        require(tokenA != tokenB && tokenA != tokenC && tokenB != tokenC, "IDENTICAL_ADDRESSES");
        address tmp;
        if (tokenA > tokenB) {
            tmp = tokenA;
            tokenA = tokenB;
            tokenB = tmp;
        }
        if (tokenB > tokenC) {
            tmp = tokenB;
            tokenB = tokenC;
            tokenC = tmp;
            if (tokenA > tokenB) {
                tmp = tokenA;
                tokenA = tokenB;
                tokenB = tmp;
            }
        }
        return (tokenA, tokenB, tokenC);
    }

    /**
     * @notice createSwapPair
     * @param _tokenA: Addresses of ERC20 conracts .
     * @param _tokenB: Addresses of ERC20 conracts .
     * @param _A: Amplification coefficient multiplied by n * (n - 1)
     * @param _fee: Fee to charge for exchanges
     * @param _admin_fee: Admin fee
     */
    function createSwapPair(
        address _tokenA,
        address _tokenB,
        uint256 _A,
        uint256 _fee,
        uint256 _admin_fee
    ) external onlyOwner {
        require(_tokenA != ZEROADDRESS && _tokenB != ZEROADDRESS && _tokenA != _tokenB, "Illegal token");
        (address t0, address t1) = sortTokens(_tokenA, _tokenB);
        address LP = LPFactory.createSwapLP(t0, t1, ZEROADDRESS, address(this));
        address swapContract = SwapTwoPoolDeployer.createSwapPair(t0, t1, _A, _fee, _admin_fee, msg.sender, LP);
        IArbswapStableSwapLP(LP).setMinter(swapContract);
        addPairInfoInternal(swapContract, t0, t1, ZEROADDRESS, LP);
    }

    /**
     * @notice createThreePoolPair
     * @param _tokenA: Addresses of ERC20 conracts .
     * @param _tokenB: Addresses of ERC20 conracts .
     * @param _tokenC: Addresses of ERC20 conracts .
     * @param _A: Amplification coefficient multiplied by n * (n - 1)
     * @param _fee: Fee to charge for exchanges
     * @param _admin_fee: Admin fee
     */
    function createThreePoolPair(
        address _tokenA,
        address _tokenB,
        address _tokenC,
        uint256 _A,
        uint256 _fee,
        uint256 _admin_fee
    ) external onlyOwner {
        require(
            _tokenA != ZEROADDRESS &&
                _tokenB != ZEROADDRESS &&
                _tokenC != ZEROADDRESS &&
                _tokenA != _tokenB &&
                _tokenA != _tokenC &&
                _tokenB != _tokenC,
            "Illegal token"
        );
        (address t0, address t1, address t2) = sortTokens(_tokenA, _tokenB, _tokenC);
        address LP = LPFactory.createSwapLP(t0, t1, t2, address(this));
        address swapContract = SwapThreePoolDeployer.createSwapPair(t0, t1, t2, _A, _fee, _admin_fee, msg.sender, LP);
        IArbswapStableSwapLP(LP).setMinter(swapContract);
        addPairInfoInternal(swapContract, t0, t1, t2, LP);
    }

    function addPairInfoInternal(
        address _swapContract,
        address _t0,
        address _t1,
        address _t2,
        address _LP
    ) internal {
        StableSwapThreePoolPairInfo storage info = stableSwapPairInfo[_t0][_t1][_t2];
        info.swapContract = _swapContract;
        info.token0 = _t0;
        info.token1 = _t1;
        info.token2 = _t2;
        info.LPContract = _LP;
        swapPairContract[pairLength] = _swapContract;
        pairLength += 1;
        if (_t2 != ZEROADDRESS) {
            addThreePoolPairInfo(_t0, _t1, _t2, info);
        }

        emit NewStableSwapPair(_swapContract, _t0, _t1, _t2, _LP);
    }

    function addThreePoolPairInfo(
        address _t0,
        address _t1,
        address _t2,
        StableSwapThreePoolPairInfo memory info
    ) internal {
        threePoolInfo[_t0][_t1] = info;
        threePoolInfo[_t0][_t2] = info;
        threePoolInfo[_t1][_t2] = info;
    }

    function addPairInfo(address _swapContract) external onlyOwner {
        IArbswapStableSwap swap = IArbswapStableSwap(_swapContract);
        uint256 N_COINS = swap.N_COINS();
        if (N_COINS == 2) {
            addPairInfoInternal(_swapContract, swap.coins(0), swap.coins(1), ZEROADDRESS, swap.token());
        } else if (N_COINS == 3) {
            addPairInfoInternal(_swapContract, swap.coins(0), swap.coins(1), swap.coins(2), swap.token());
        }
    }

    function getPairInfo(address _tokenA, address _tokenB) external view returns (StableSwapPairInfo memory info) {
        (address t0, address t1) = sortTokens(_tokenA, _tokenB);
        StableSwapThreePoolPairInfo memory pairInfo = stableSwapPairInfo[t0][t1][ZEROADDRESS];
        info.swapContract = pairInfo.swapContract;
        info.token0 = pairInfo.token0;
        info.token1 = pairInfo.token1;
        info.LPContract = pairInfo.LPContract;
    }

    function getThreePoolPairInfo(address _tokenA, address _tokenB)
        external
        view
        returns (StableSwapThreePoolPairInfo memory info)
    {
        (address t0, address t1) = sortTokens(_tokenA, _tokenB);
        info = threePoolInfo[t0][t1];
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

interface IArbswapStableSwap {
    function token() external view returns (address);

    function balances(uint256 i) external view returns (uint256);

    function N_COINS() external view returns (uint256);

    function RATES(uint256 i) external view returns (uint256);

    function coins(uint256 i) external view returns (address);

    function PRECISION_MUL(uint256 i) external view returns (uint256);

    function fee() external view returns (uint256);

    function admin_fee() external view returns (uint256);

    function A() external view returns (uint256);

    function get_D_mem(uint256[2] memory _balances, uint256 amp) external view returns (uint256);

    function get_y(
        uint256 i,
        uint256 j,
        uint256 x,
        uint256[2] memory xp_
    ) external view returns (uint256);

    function calc_withdraw_one_coin(uint256 _token_amount, uint256 i) external view returns (uint256);

    function add_liquidity(uint256[2] memory amounts, uint256 min_mint_amount) external payable;

    function remove_liquidity(uint256 _amount, uint256[2] memory min_amounts) external;

    function remove_liquidity_imbalance(uint256[2] memory amounts, uint256 max_burn_amount) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

interface IArbswapStableSwapLP {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    function mint(address _to, uint256 _amount) external;

    function burnFrom(address _to, uint256 _amount) external;

    function setMinter(address _newMinter) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

interface IArbswapStableSwapDeployer {
    function createSwapPair(
        address _tokenA,
        address _tokenB,
        uint256 _A,
        uint256 _fee,
        uint256 _admin_fee,
        address _admin,
        address _LP
    ) external returns (address);

    function createSwapPair(
        address _tokenA,
        address _tokenB,
        address _tokenC,
        uint256 _A,
        uint256 _fee,
        uint256 _admin_fee,
        address _admin,
        address _LP
    ) external returns (address);
}

File 6 of 7 : IArbswapStableSwapLPFactory.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

interface IArbswapStableSwapLPFactory {
    function createSwapLP(
        address _tokenA,
        address _tokenB,
        address _tokenC,
        address _minter
    ) external returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"contract IArbswapStableSwapLPFactory","name":"_LPFactory","type":"address"},{"internalType":"contract IArbswapStableSwapDeployer","name":"_SwapTwoPoolDeployer","type":"address"},{"internalType":"contract IArbswapStableSwapDeployer","name":"_SwapThreePoolDeployer","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"swapContract","type":"address"},{"indexed":false,"internalType":"address","name":"tokenA","type":"address"},{"indexed":false,"internalType":"address","name":"tokenB","type":"address"},{"indexed":false,"internalType":"address","name":"tokenC","type":"address"},{"indexed":false,"internalType":"address","name":"LP","type":"address"}],"name":"NewStableSwapPair","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"LPFactory","outputs":[{"internalType":"contract IArbswapStableSwapLPFactory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SwapThreePoolDeployer","outputs":[{"internalType":"contract IArbswapStableSwapDeployer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SwapTwoPoolDeployer","outputs":[{"internalType":"contract IArbswapStableSwapDeployer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_swapContract","type":"address"}],"name":"addPairInfo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenA","type":"address"},{"internalType":"address","name":"_tokenB","type":"address"},{"internalType":"uint256","name":"_A","type":"uint256"},{"internalType":"uint256","name":"_fee","type":"uint256"},{"internalType":"uint256","name":"_admin_fee","type":"uint256"}],"name":"createSwapPair","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenA","type":"address"},{"internalType":"address","name":"_tokenB","type":"address"},{"internalType":"address","name":"_tokenC","type":"address"},{"internalType":"uint256","name":"_A","type":"uint256"},{"internalType":"uint256","name":"_fee","type":"uint256"},{"internalType":"uint256","name":"_admin_fee","type":"uint256"}],"name":"createThreePoolPair","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenA","type":"address"},{"internalType":"address","name":"_tokenB","type":"address"}],"name":"getPairInfo","outputs":[{"components":[{"internalType":"address","name":"swapContract","type":"address"},{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"address","name":"LPContract","type":"address"}],"internalType":"struct ArbswapStableSwapFactory.StableSwapPairInfo","name":"info","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenA","type":"address"},{"internalType":"address","name":"_tokenB","type":"address"}],"name":"getThreePoolPairInfo","outputs":[{"components":[{"internalType":"address","name":"swapContract","type":"address"},{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"address","name":"token2","type":"address"},{"internalType":"address","name":"LPContract","type":"address"}],"internalType":"struct ArbswapStableSwapFactory.StableSwapThreePoolPairInfo","name":"info","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pairLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"stableSwapPairInfo","outputs":[{"internalType":"address","name":"swapContract","type":"address"},{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"address","name":"token2","type":"address"},{"internalType":"address","name":"LPContract","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"swapPairContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000005bbebd93777dfa334f6346271fbc6a56ed3718f10000000000000000000000006b23bbdddbbef5f999b9cb7e9b579231ac69507c000000000000000000000000c1b418879750fc785b2112a77d73498eaa125e67

-----Decoded View---------------
Arg [0] : _LPFactory (address): 0x5bbebD93777DFa334f6346271FBC6a56Ed3718F1
Arg [1] : _SwapTwoPoolDeployer (address): 0x6b23bBddDBbef5F999B9CB7e9b579231aC69507C
Arg [2] : _SwapThreePoolDeployer (address): 0xc1b418879750Fc785B2112a77d73498EaA125e67

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000005bbebd93777dfa334f6346271fbc6a56ed3718f1
Arg [1] : 0000000000000000000000006b23bbdddbbef5f999b9cb7e9b579231ac69507c
Arg [2] : 000000000000000000000000c1b418879750fc785b2112a77d73498eaa125e67


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.