Contract 0x1205f31718499dbf1fca446663b532ef87481fe1 5

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0x1cb51c1ac3626f6e07981f3a427bbde9225d4018703f996ba32d0cac012a8268Approve255819542023-01-29 21:43:022 hrs 55 mins ago0xb3ed4d6c759a48f00392ac1c4da329951490b00c IN  Stargate Finance: S*USDC Token0 AVAX0.001244152334 26.717468051
0xcf7cba5fe4fcf371bdda15f57cc124973790c697c1776de694967e40c0c0d754Approve255731412023-01-29 16:47:137 hrs 51 mins ago0xefe8685d3005c56c6cf7be23fd1428c55c456b3f IN  Stargate Finance: S*USDC Token0 AVAX0.001367439955 29.365
0xb42d3665407c39d4867846f4b2038ede306cd87a0a0223ed83f9e71fc26c3801Approve255711352023-01-29 15:39:268 hrs 58 mins ago0xbe8a62dcd18a6eb65cdb0f69a2caf8bbf2694b19 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0xdc5dfbb76c3e756472a085e0ab73d3f2786ef74229fa2ebf9df5d6945b30aa4bApprove255634292023-01-29 11:19:5113 hrs 18 mins ago0x00001eeeb6f8ca55c9d956fba882cd977a42b933 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x34d11f1f0815518b7e665afea848dacef291d4fe14833f8fa5781c780eb0f657Approve255293752023-01-28 16:08:521 day 8 hrs ago0x9a2baa30a0cc34201f8b9b7cccb684f13eb9fd3d IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0xc52f0e5d7eae178800ad20d5199421f92144c72bf55f89450977bf22d940347cApprove255192122023-01-28 10:26:411 day 14 hrs ago0x5bf2c82bc66d561ebf0995eabfa26ff0ec3a6a1d IN  Stargate Finance: S*USDC Token0 AVAX0.001273712225 27.35225
0x394778830e9691fa46a23f1776a367d0905f7e3f2810981e8477ffb31921ddb2Approve255163872023-01-28 8:49:541 day 15 hrs ago0x58c20084c7b26817620e08745aa0c907ecbad2f0 IN  Stargate Finance: S*USDC Token0 AVAX0.0012267115 26.5
0xfcdcdc80f1d56986fb88b9a3d297c0bbb85aba389153e9fb0f98f13c4f168ebfApprove254780522023-01-27 11:20:322 days 13 hrs ago0xcb92f1b559d54337e2cce2d744201e3178dbd70d IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x4a22abe89bd88e02245070e04cad9a1b1585adc748af24bf645f6636ca1b5cedApprove254730712023-01-27 8:29:382 days 16 hrs ago0xba93b56424dc3ec52468caf609164ce3d699f055 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x7b249d8842ca7e8d3498bbf3a799aef512f69e6c20452daeabeb44ac48e5f7f6Approve254494452023-01-26 18:57:123 days 5 hrs ago0x90a795b82e369c795aac9bd7d63ea86e335e34ce IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0xa035ff8b560f974dc2125e6d9c7c125f6a10a04ad67c65a83a08486a72f015bdApprove254481222023-01-26 18:12:183 days 6 hrs ago0x638db4ec10b5da4b42bfb5e0633421d6d031d296 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x19aee83e045712c972a13a3b0e27524603f06428b41eae771972553a6c338579Approve254405812023-01-26 14:00:523 days 10 hrs ago0x2ffd669e12d0497e8457641ac27b386bd2a3c4e4 IN  Stargate Finance: S*USDC Token0 AVAX0.00153671133
0xa6d99d8a602d64762c1e7abc2cb09b7e036161b29ea149c1423b998d5ff7061cApprove254179572023-01-26 1:08:533 days 23 hrs ago0x89df40061155f04a7e5c011cbe038ae9643cb59e IN  Stargate Finance: S*USDC Token0 AVAX0.000770911208 26.50727946
0x6e2f3d55eee8b5a8df921c4fc9fa2e7efc063db1ef2c0f54d7903202ad55c2d6Approve254071922023-01-25 19:06:214 days 5 hrs ago0xbee2d469aacb46251ae33cca91f482e26c971dff IN  Stargate Finance: S*USDC Token0 AVAX0.001270426108 27.2816825
0xd89f68a772134ddff4f26b279352595f1768bb742ab9e4554cf9a80ca9b2eebcApprove254070352023-01-25 19:01:044 days 5 hrs ago0x201a19858c53185165fcbeec2b70891bf596c5ed IN  Stargate Finance: S*USDC Token0 AVAX0.0012251215 26.5
0xc7b173b5101d573fda2158dae5ecc68996f9813a9dfd6479e02f5e596e5ed40eApprove254035542023-01-25 17:03:014 days 7 hrs ago0x90653c8000a28cec60ec7f94020a8a0c1d444aeb IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x2f71f9c3b90783faeb67948de201fcf8593751df1e75d34197149be90acdd551Approve254011762023-01-25 15:41:564 days 8 hrs ago0x23323e87fcf0f45d8903b3460752c06479c41449 IN  Stargate Finance: S*USDC Token0 AVAX0.001273712225 27.35225
0xf073700980f9372d20f92223f770f639694963b2005f79e24562906006f14ac6Approve253981742023-01-25 14:01:034 days 10 hrs ago0xe0e480e422ebef484ea10548ac7c02939bc3f8c3 IN  Stargate Finance: S*USDC Token0 AVAX0.00116417525
0xbb166f176f2fd8f52ce5210a4e875112a4d538c3f1057dd0d1643adb7f7b2943Approve253962342023-01-25 12:54:464 days 11 hrs ago0x57702217d1cdbf4df7110abd91832216310b4062 IN  Stargate Finance: S*USDC Token0 AVAX0.00130387628
0x559160a11e7b453fdd590c400433a95ef0276ae61c5fa82768b90a9038608b31Approve253951272023-01-25 12:17:164 days 12 hrs ago0xaf2d0b9579566fc198c2999b40aeaf88f92e96d9 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x1afb9596d41cf7fc9c7d2338a9a3b5bf72f1873b5dea28a35af5301d387d32d9Approve253712802023-01-24 22:39:015 days 1 hr ago0xc152cd87af2b3774e93ed2ad2523c90c576db5fa IN  Stargate Finance: S*USDC Token0 AVAX0.001203566 26
0xaf5599972e417f53803a72f355653ea911558d993b397111acbe67b7fac53e53Approve253570012023-01-24 14:39:055 days 9 hrs ago0x993104097a62f948b0b7f58fecc36862ba001502 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
0x65641309534aaa655ff5ba7ca432dfa13396216b35f335cc5b007160c95bac3fApprove253521882023-01-24 11:54:155 days 12 hrs ago0x25493740e4507cbcce792b951a9eff3953b774cd IN  Stargate Finance: S*USDC Token0 AVAX0.00125180478 26.8818
0xdb55ab7b4e4e04e9bb1e9cada478ff97d919ca2921eb410cba1efef34de5fe12Approve253498702023-01-24 10:33:575 days 14 hrs ago0x4eb7a8a41c906d85824ff7706a9492561f99fe9d IN  Stargate Finance: S*USDC Token0 AVAX0.001267238575 27.213232025
0x489c81f51a2c87055eabca2c98fd59090428150456ec0b3514d28726c0fe0d44Approve253372912023-01-24 3:17:555 days 21 hrs ago0x465d5ca6210cecfccad803d68e09f4035652dfd9 IN  Stargate Finance: S*USDC Token0 AVAX0.0012340255 26.5
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0xca0545c4fd263a25dc83f4eeabc9f327dfb0f95de98badec124290206a026cc5122191592022-03-17 10:07:58318 days 14 hrs ago 0x808d7c71ad2ba3fa531b068a2417c63106bc0949  Contract Creation0 AVAX
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Contract Source Code Verified (Exact Match)

Contract Name:
Pool

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 7 : Pool.sol
// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.7.6;
pragma abicoder v2;

// imports
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "./LPTokenERC20.sol";
import "./interfaces/IStargateFeeLibrary.sol";

// libraries
import "@openzeppelin/contracts/math/SafeMath.sol";

/// Pool contracts on other chains and managed by the Stargate protocol.
contract Pool is LPTokenERC20, ReentrancyGuard {
    using SafeMath for uint256;

    //---------------------------------------------------------------------------
    // CONSTANTS
    bytes4 private constant SELECTOR = bytes4(keccak256(bytes("transfer(address,uint256)")));
    uint256 public constant BP_DENOMINATOR = 10000;

    //---------------------------------------------------------------------------
    // STRUCTS
    struct ChainPath {
        bool ready; // indicate if the counter chainPath has been created.
        uint16 dstChainId;
        uint256 dstPoolId;
        uint256 weight;
        uint256 balance;
        uint256 lkb;
        uint256 credits;
        uint256 idealBalance;
    }

    struct SwapObj {
        uint256 amount;
        uint256 eqFee;
        uint256 eqReward;
        uint256 lpFee;
        uint256 protocolFee;
        uint256 lkbRemove;
    }

    struct CreditObj {
        uint256 credits;
        uint256 idealBalance;
    }

    //---------------------------------------------------------------------------
    // VARIABLES

    // chainPath
    ChainPath[] public chainPaths; // list of connected chains with shared pools
    mapping(uint16 => mapping(uint256 => uint256)) public chainPathIndexLookup; // lookup for chainPath by chainId => poolId =>index

    // metadata
    uint256 public immutable poolId; // shared id between chains to represent same pool
    uint256 public sharedDecimals; // the shared decimals (lowest common decimals between chains)
    uint256 public localDecimals; // the decimals for the token
    uint256 public immutable convertRate; // the decimals for the token
    address public immutable token; // the token for the pool
    address public immutable router; // the token for the pool

    bool public stopSwap; // flag to stop swapping in extreme cases

    // Fee and Liquidity
    uint256 public totalLiquidity; // the total amount of tokens added on this side of the chain (fees + deposits - withdrawals)
    uint256 public totalWeight; // total weight for pool percentages
    uint256 public mintFeeBP; // fee basis points for the mint/deposit
    uint256 public protocolFeeBalance; // fee balance created from dao fee
    uint256 public mintFeeBalance; // fee balance created from mint fee
    uint256 public eqFeePool; // pool rewards in Shared Decimal format. indicate the total budget for reverse swap incentive
    address public feeLibrary; // address for retrieving fee params for swaps

    // Delta related
    uint256 public deltaCredit; // credits accumulated from txn
    bool public batched; // flag to indicate if we want batch processing.
    bool public defaultSwapMode; // flag for the default mode for swap
    bool public defaultLPMode; // flag for the default mode for lp
    uint256 public swapDeltaBP; // basis points of poolCredits to activate Delta in swap
    uint256 public lpDeltaBP; // basis points of poolCredits to activate Delta in liquidity events

    //---------------------------------------------------------------------------
    // EVENTS
    event Mint(address to, uint256 amountLP, uint256 amountSD, uint256 mintFeeAmountSD);
    event Burn(address from, uint256 amountLP, uint256 amountSD);
    event RedeemLocalCallback(address _to, uint256 _amountSD, uint256 _amountToMintSD);
    event Swap(
        uint16 chainId,
        uint256 dstPoolId,
        address from,
        uint256 amountSD,
        uint256 eqReward,
        uint256 eqFee,
        uint256 protocolFee,
        uint256 lpFee
    );
    event SendCredits(uint16 dstChainId, uint256 dstPoolId, uint256 credits, uint256 idealBalance);
    event RedeemRemote(uint16 chainId, uint256 dstPoolId, address from, uint256 amountLP, uint256 amountSD);
    event RedeemLocal(address from, uint256 amountLP, uint256 amountSD, uint16 chainId, uint256 dstPoolId, bytes to);
    event InstantRedeemLocal(address from, uint256 amountLP, uint256 amountSD, address to);
    event CreditChainPath(uint16 chainId, uint256 srcPoolId, uint256 amountSD, uint256 idealBalance);
    event SwapRemote(address to, uint256 amountSD, uint256 protocolFee, uint256 dstFee);
    event WithdrawRemote(uint16 srcChainId, uint256 srcPoolId, uint256 swapAmount, uint256 mintAmount);
    event ChainPathUpdate(uint16 dstChainId, uint256 dstPoolId, uint256 weight);
    event FeesUpdated(uint256 mintFeeBP);
    event FeeLibraryUpdated(address feeLibraryAddr);
    event StopSwapUpdated(bool swapStop);
    event WithdrawProtocolFeeBalance(address to, uint256 amountSD);
    event WithdrawMintFeeBalance(address to, uint256 amountSD);
    event DeltaParamUpdated(bool batched, uint256 swapDeltaBP, uint256 lpDeltaBP, bool defaultSwapMode, bool defaultLPMode);

    //---------------------------------------------------------------------------
    // MODIFIERS
    modifier onlyRouter() {
        require(msg.sender == router, "Stargate: only the router can call this method");
        _;
    }

    constructor(
        uint256 _poolId,
        address _router,
        address _token,
        uint256 _sharedDecimals,
        uint256 _localDecimals,
        address _feeLibrary,
        string memory _name,
        string memory _symbol
    ) LPTokenERC20(_name, _symbol) {
        require(_token != address(0x0), "Stargate: _token cannot be 0x0");
        require(_router != address(0x0), "Stargate: _router cannot be 0x0");
        poolId = _poolId;
        router = _router;
        token = _token;
        sharedDecimals = _sharedDecimals;
        decimals = uint8(_sharedDecimals);
        localDecimals = _localDecimals;
        convertRate = 10**(uint256(localDecimals).sub(sharedDecimals));
        totalWeight = 0;
        feeLibrary = _feeLibrary;

        //delta algo related
        batched = false;
        defaultSwapMode = true;
        defaultLPMode = true;
    }

    function getChainPathsLength() public view returns (uint256) {
        return chainPaths.length;
    }

    //---------------------------------------------------------------------------
    // LOCAL CHAIN FUNCTIONS

    function mint(address _to, uint256 _amountLD) external nonReentrant onlyRouter returns (uint256) {
        return _mintLocal(_to, _amountLD, true, true);
    }

    // Local                                    Remote
    // -------                                  ---------
    // swap             ->                      swapRemote
    function swap(
        uint16 _dstChainId,
        uint256 _dstPoolId,
        address _from,
        uint256 _amountLD,
        uint256 _minAmountLD,
        bool newLiquidity
    ) external nonReentrant onlyRouter returns (SwapObj memory) {
        require(!stopSwap, "Stargate: swap func stopped");
        ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
        require(cp.ready == true, "Stargate: counter chainPath is not ready");

        uint256 amountSD = amountLDtoSD(_amountLD);
        uint256 minAmountSD = amountLDtoSD(_minAmountLD);

        // request fee params from library
        SwapObj memory s = IStargateFeeLibrary(feeLibrary).getFees(poolId, _dstPoolId, _dstChainId, _from, amountSD);

        // equilibrium fee and reward. note eqFee/eqReward are separated from swap liquidity
        eqFeePool = eqFeePool.sub(s.eqReward);
        // update the new amount the user gets minus the fees
        s.amount = amountSD.sub(s.eqFee).sub(s.protocolFee).sub(s.lpFee);
        // users will also get the eqReward
        require(s.amount.add(s.eqReward) >= minAmountSD, "Stargate: slippage too high");

        // behaviours
        //     - protocolFee: booked, stayed and withdrawn at remote.
        //     - eqFee: booked, stayed and withdrawn at remote.
        //     - lpFee: booked and stayed at remote, can be withdrawn anywhere

        s.lkbRemove = amountSD.sub(s.lpFee).add(s.eqReward);
        // check for transfer solvency.
        require(cp.balance >= s.lkbRemove, "Stargate: dst balance too low");
        cp.balance = cp.balance.sub(s.lkbRemove);

        if (newLiquidity) {
            deltaCredit = deltaCredit.add(amountSD).add(s.eqReward);
        } else if (s.eqReward > 0) {
            deltaCredit = deltaCredit.add(s.eqReward);
        }

        // distribute credits on condition.
        if (!batched || deltaCredit >= totalLiquidity.mul(swapDeltaBP).div(BP_DENOMINATOR)) {
            _delta(defaultSwapMode);
        }

        emit Swap(_dstChainId, _dstPoolId, _from, s.amount, s.eqReward, s.eqFee, s.protocolFee, s.lpFee);
        return s;
    }

    // Local                                    Remote
    // -------                                  ---------
    // sendCredits      ->                      creditChainPath
    function sendCredits(uint16 _dstChainId, uint256 _dstPoolId) external nonReentrant onlyRouter returns (CreditObj memory c) {
        ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
        require(cp.ready == true, "Stargate: counter chainPath is not ready");
        cp.lkb = cp.lkb.add(cp.credits);
        c.idealBalance = totalLiquidity.mul(cp.weight).div(totalWeight);
        c.credits = cp.credits;
        cp.credits = 0;
        emit SendCredits(_dstChainId, _dstPoolId, c.credits, c.idealBalance);
    }

    // Local                                    Remote
    // -------                                  ---------
    // redeemRemote   ->                        swapRemote
    function redeemRemote(
        uint16 _dstChainId,
        uint256 _dstPoolId,
        address _from,
        uint256 _amountLP
    ) external nonReentrant onlyRouter {
        require(_from != address(0x0), "Stargate: _from cannot be 0x0");
        uint256 amountSD = _burnLocal(_from, _amountLP);
        //run Delta
        if (!batched || deltaCredit > totalLiquidity.mul(lpDeltaBP).div(BP_DENOMINATOR)) {
            _delta(defaultLPMode);
        }
        uint256 amountLD = amountSDtoLD(amountSD);
        emit RedeemRemote(_dstChainId, _dstPoolId, _from, _amountLP, amountLD);
    }

    function instantRedeemLocal(
        address _from,
        uint256 _amountLP,
        address _to
    ) external nonReentrant onlyRouter returns (uint256 amountSD) {
        require(_from != address(0x0), "Stargate: _from cannot be 0x0");
        uint256 _deltaCredit = deltaCredit; // sload optimization.
        uint256 _capAmountLP = _amountSDtoLP(_deltaCredit);

        if (_amountLP > _capAmountLP) _amountLP = _capAmountLP;

        amountSD = _burnLocal(_from, _amountLP);
        deltaCredit = _deltaCredit.sub(amountSD);
        uint256 amountLD = amountSDtoLD(amountSD);
        _safeTransfer(token, _to, amountLD);
        emit InstantRedeemLocal(_from, _amountLP, amountSD, _to);
    }

    // Local                                    Remote
    // -------                                  ---------
    // redeemLocal   ->                         redeemLocalCheckOnRemote
    // redeemLocalCallback             <-
    function redeemLocal(
        address _from,
        uint256 _amountLP,
        uint16 _dstChainId,
        uint256 _dstPoolId,
        bytes calldata _to
    ) external nonReentrant onlyRouter returns (uint256 amountSD) {
        require(_from != address(0x0), "Stargate: _from cannot be 0x0");

        // safeguard.
        require(chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]].ready == true, "Stargate: counter chainPath is not ready");
        amountSD = _burnLocal(_from, _amountLP);

        // run Delta
        if (!batched || deltaCredit > totalLiquidity.mul(lpDeltaBP).div(BP_DENOMINATOR)) {
            _delta(false);
        }
        emit RedeemLocal(_from, _amountLP, amountSD, _dstChainId, _dstPoolId, _to);
    }

    //---------------------------------------------------------------------------
    // REMOTE CHAIN FUNCTIONS

    // Local                                    Remote
    // -------                                  ---------
    // sendCredits      ->                      creditChainPath
    function creditChainPath(
        uint16 _dstChainId,
        uint256 _dstPoolId,
        CreditObj memory _c
    ) external nonReentrant onlyRouter {
        ChainPath storage cp = chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]];
        cp.balance = cp.balance.add(_c.credits);
        if (cp.idealBalance != _c.idealBalance) {
            cp.idealBalance = _c.idealBalance;
        }
        emit CreditChainPath(_dstChainId, _dstPoolId, _c.credits, _c.idealBalance);
    }

    // Local                                    Remote
    // -------                                  ---------
    // swap             ->                      swapRemote
    function swapRemote(
        uint16 _srcChainId,
        uint256 _srcPoolId,
        address _to,
        SwapObj memory _s
    ) external nonReentrant onlyRouter returns (uint256 amountLD) {
        // booking lpFee
        totalLiquidity = totalLiquidity.add(_s.lpFee);
        // booking eqFee
        eqFeePool = eqFeePool.add(_s.eqFee);
        // booking stargateFee
        protocolFeeBalance = protocolFeeBalance.add(_s.protocolFee);

        // update LKB
        uint256 chainPathIndex = chainPathIndexLookup[_srcChainId][_srcPoolId];
        chainPaths[chainPathIndex].lkb = chainPaths[chainPathIndex].lkb.sub(_s.lkbRemove);

        // user receives the amount + the srcReward
        amountLD = amountSDtoLD(_s.amount.add(_s.eqReward));
        _safeTransfer(token, _to, amountLD);
        emit SwapRemote(_to, _s.amount.add(_s.eqReward), _s.protocolFee, _s.eqFee);
    }

    // Local                                    Remote
    // -------                                  ---------
    // redeemLocal   ->                         redeemLocalCheckOnRemote
    // redeemLocalCallback             <-
    function redeemLocalCallback(
        uint16 _srcChainId,
        uint256 _srcPoolId,
        address _to,
        uint256 _amountSD,
        uint256 _amountToMintSD
    ) external nonReentrant onlyRouter {
        if (_amountToMintSD > 0) {
            _mintLocal(_to, amountSDtoLD(_amountToMintSD), false, false);
        }

        ChainPath storage cp = getAndCheckCP(_srcChainId, _srcPoolId);
        cp.lkb = cp.lkb.sub(_amountSD);

        uint256 amountLD = amountSDtoLD(_amountSD);
        _safeTransfer(token, _to, amountLD);
        emit RedeemLocalCallback(_to, _amountSD, _amountToMintSD);
    }

    // Local                                    Remote
    // -------                                  ---------
    // redeemLocal(amount)   ->               redeemLocalCheckOnRemote
    // redeemLocalCallback             <-
    function redeemLocalCheckOnRemote(
        uint16 _srcChainId,
        uint256 _srcPoolId,
        uint256 _amountSD
    ) external nonReentrant onlyRouter returns (uint256 swapAmount, uint256 mintAmount) {
        ChainPath storage cp = getAndCheckCP(_srcChainId, _srcPoolId);
        if (_amountSD > cp.balance) {
            mintAmount = _amountSD - cp.balance;
            swapAmount = cp.balance;
            cp.balance = 0;
        } else {
            cp.balance = cp.balance.sub(_amountSD);
            swapAmount = _amountSD;
            mintAmount = 0;
        }
        emit WithdrawRemote(_srcChainId, _srcPoolId, swapAmount, mintAmount);
    }

    //---------------------------------------------------------------------------
    // DAO Calls
    function createChainPath(
        uint16 _dstChainId,
        uint256 _dstPoolId,
        uint256 _weight
    ) external onlyRouter {
        for (uint256 i = 0; i < chainPaths.length; ++i) {
            ChainPath memory cp = chainPaths[i];
            bool exists = cp.dstChainId == _dstChainId && cp.dstPoolId == _dstPoolId;
            require(!exists, "Stargate: cant createChainPath of existing dstChainId and _dstPoolId");
        }
        totalWeight = totalWeight.add(_weight);
        chainPathIndexLookup[_dstChainId][_dstPoolId] = chainPaths.length;
        chainPaths.push(ChainPath(false, _dstChainId, _dstPoolId, _weight, 0, 0, 0, 0));
        emit ChainPathUpdate(_dstChainId, _dstPoolId, _weight);
    }

    function setWeightForChainPath(
        uint16 _dstChainId,
        uint256 _dstPoolId,
        uint16 _weight
    ) external onlyRouter {
        ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
        totalWeight = totalWeight.sub(cp.weight).add(_weight);
        cp.weight = _weight;
        emit ChainPathUpdate(_dstChainId, _dstPoolId, _weight);
    }

    function setFee(uint256 _mintFeeBP) external onlyRouter {
        require(_mintFeeBP <= BP_DENOMINATOR, "Bridge: cum fees > 100%");
        mintFeeBP = _mintFeeBP;
        emit FeesUpdated(mintFeeBP);
    }

    function setFeeLibrary(address _feeLibraryAddr) external onlyRouter {
        require(_feeLibraryAddr != address(0x0), "Stargate: fee library cant be 0x0");
        feeLibrary = _feeLibraryAddr;
        emit FeeLibraryUpdated(_feeLibraryAddr);
    }

    function setSwapStop(bool _swapStop) external onlyRouter {
        stopSwap = _swapStop;
        emit StopSwapUpdated(_swapStop);
    }

    function setDeltaParam(
        bool _batched,
        uint256 _swapDeltaBP,
        uint256 _lpDeltaBP,
        bool _defaultSwapMode,
        bool _defaultLPMode
    ) external onlyRouter {
        require(_swapDeltaBP <= BP_DENOMINATOR && _lpDeltaBP <= BP_DENOMINATOR, "Stargate: wrong Delta param");
        batched = _batched;
        swapDeltaBP = _swapDeltaBP;
        lpDeltaBP = _lpDeltaBP;
        defaultSwapMode = _defaultSwapMode;
        defaultLPMode = _defaultLPMode;
        emit DeltaParamUpdated(_batched, _swapDeltaBP, _lpDeltaBP, _defaultSwapMode, _defaultLPMode);
    }

    function callDelta(bool _fullMode) external onlyRouter {
        _delta(_fullMode);
    }

    function activateChainPath(uint16 _dstChainId, uint256 _dstPoolId) external onlyRouter {
        ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
        require(cp.ready == false, "Stargate: chainPath is already active");
        // this func will only be called once
        cp.ready = true;
    }

    function withdrawProtocolFeeBalance(address _to) external onlyRouter {
        if (protocolFeeBalance > 0) {
            uint256 amountOfLD = amountSDtoLD(protocolFeeBalance);
            protocolFeeBalance = 0;
            _safeTransfer(token, _to, amountOfLD);
            emit WithdrawProtocolFeeBalance(_to, amountOfLD);
        }
    }

    function withdrawMintFeeBalance(address _to) external onlyRouter {
        if (mintFeeBalance > 0) {
            uint256 amountOfLD = amountSDtoLD(mintFeeBalance);
            mintFeeBalance = 0;
            _safeTransfer(token, _to, amountOfLD);
            emit WithdrawMintFeeBalance(_to, amountOfLD);
        }
    }

    //---------------------------------------------------------------------------
    // INTERNAL
    // Conversion Helpers
    //---------------------------------------------------------------------------
    function amountLPtoLD(uint256 _amountLP) external view returns (uint256) {
        return amountSDtoLD(_amountLPtoSD(_amountLP));
    }

    function _amountLPtoSD(uint256 _amountLP) internal view returns (uint256) {
        require(totalSupply > 0, "Stargate: cant convert LPtoSD when totalSupply == 0");
        return _amountLP.mul(totalLiquidity).div(totalSupply);
    }

    function _amountSDtoLP(uint256 _amountSD) internal view returns (uint256) {
        require(totalLiquidity > 0, "Stargate: cant convert SDtoLP when totalLiq == 0");
        return _amountSD.mul(totalSupply).div(totalLiquidity);
    }

    function amountSDtoLD(uint256 _amount) internal view returns (uint256) {
        return _amount.mul(convertRate);
    }

    function amountLDtoSD(uint256 _amount) internal view returns (uint256) {
        return _amount.div(convertRate);
    }

    function getAndCheckCP(uint16 _dstChainId, uint256 _dstPoolId) internal view returns (ChainPath storage) {
        require(chainPaths.length > 0, "Stargate: no chainpaths exist");
        ChainPath storage cp = chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]];
        require(cp.dstChainId == _dstChainId && cp.dstPoolId == _dstPoolId, "Stargate: local chainPath does not exist");
        return cp;
    }

    function getChainPath(uint16 _dstChainId, uint256 _dstPoolId) external view returns (ChainPath memory) {
        ChainPath memory cp = chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]];
        require(cp.dstChainId == _dstChainId && cp.dstPoolId == _dstPoolId, "Stargate: local chainPath does not exist");
        return cp;
    }

    function _burnLocal(address _from, uint256 _amountLP) internal returns (uint256) {
        require(totalSupply > 0, "Stargate: cant burn when totalSupply == 0");
        uint256 amountOfLPTokens = balanceOf[_from];
        require(amountOfLPTokens >= _amountLP, "Stargate: not enough LP tokens to burn");

        uint256 amountSD = _amountLP.mul(totalLiquidity).div(totalSupply);
        //subtract totalLiquidity accordingly
        totalLiquidity = totalLiquidity.sub(amountSD);

        _burn(_from, _amountLP);
        emit Burn(_from, _amountLP, amountSD);
        return amountSD;
    }

    function _delta(bool fullMode) internal {
        if (deltaCredit > 0 && totalWeight > 0) {
            uint256 cpLength = chainPaths.length;
            uint256[] memory deficit = new uint256[](cpLength);
            uint256 totalDeficit = 0;

            // algorithm steps 6-9: calculate the total and the amounts required to get to balance state
            for (uint256 i = 0; i < cpLength; ++i) {
                ChainPath storage cp = chainPaths[i];
                // (liquidity * (weight/totalWeight)) - (lkb+credits)
                uint256 balLiq = totalLiquidity.mul(cp.weight).div(totalWeight);
                uint256 currLiq = cp.lkb.add(cp.credits);
                if (balLiq > currLiq) {
                    // save gas since we know balLiq > currLiq and we know deficit[i] > 0
                    deficit[i] = balLiq - currLiq;
                    totalDeficit = totalDeficit.add(deficit[i]);
                }
            }

            // indicates how much delta credit is distributed
            uint256 spent;

            // handle credits with 2 tranches. the [ < totalDeficit] [excessCredit]
            // run full Delta, allocate all credits
            if (totalDeficit == 0) {
                // only fullMode delta will allocate excess credits
                if (fullMode && deltaCredit > 0) {
                    // credit ChainPath by weights
                    for (uint256 i = 0; i < cpLength; ++i) {
                        ChainPath storage cp = chainPaths[i];
                        // credits = credits + toBalanceChange + remaining allocation based on weight
                        uint256 amtToCredit = deltaCredit.mul(cp.weight).div(totalWeight);
                        spent = spent.add(amtToCredit);
                        cp.credits = cp.credits.add(amtToCredit);
                    }
                } // else do nth
            } else if (totalDeficit <= deltaCredit) {
                if (fullMode) {
                    // algorithm step 13: calculate amount to disperse to bring to balance state or as close as possible
                    uint256 excessCredit = deltaCredit - totalDeficit;
                    // algorithm steps 14-16: calculate credits
                    for (uint256 i = 0; i < cpLength; ++i) {
                        if (deficit[i] > 0) {
                            ChainPath storage cp = chainPaths[i];
                            // credits = credits + deficit + remaining allocation based on weight
                            uint256 amtToCredit = deficit[i].add(excessCredit.mul(cp.weight).div(totalWeight));
                            spent = spent.add(amtToCredit);
                            cp.credits = cp.credits.add(amtToCredit);
                        }
                    }
                } else {
                    // totalDeficit <= deltaCredit but not running fullMode
                    // credit chainPaths as is if any deficit, not using all deltaCredit
                    for (uint256 i = 0; i < cpLength; ++i) {
                        if (deficit[i] > 0) {
                            ChainPath storage cp = chainPaths[i];
                            uint256 amtToCredit = deficit[i];
                            spent = spent.add(amtToCredit);
                            cp.credits = cp.credits.add(amtToCredit);
                        }
                    }
                }
            } else {
                // totalDeficit > deltaCredit, fullMode or not, normalize the deficit by deltaCredit
                for (uint256 i = 0; i < cpLength; ++i) {
                    if (deficit[i] > 0) {
                        ChainPath storage cp = chainPaths[i];
                        uint256 proportionalDeficit = deficit[i].mul(deltaCredit).div(totalDeficit);
                        spent = spent.add(proportionalDeficit);
                        cp.credits = cp.credits.add(proportionalDeficit);
                    }
                }
            }

            // deduct the amount of credit sent
            deltaCredit = deltaCredit.sub(spent);
        }
    }

    function _mintLocal(
        address _to,
        uint256 _amountLD,
        bool _feesEnabled,
        bool _creditDelta
    ) internal returns (uint256 amountSD) {
        require(totalWeight > 0, "Stargate: No ChainPaths exist");
        amountSD = amountLDtoSD(_amountLD);

        uint256 mintFeeSD = 0;
        if (_feesEnabled) {
            mintFeeSD = amountSD.mul(mintFeeBP).div(BP_DENOMINATOR);
            amountSD = amountSD.sub(mintFeeSD);
            mintFeeBalance = mintFeeBalance.add(mintFeeSD);
        }

        if (_creditDelta) {
            deltaCredit = deltaCredit.add(amountSD);
        }

        uint256 amountLPTokens = amountSD;
        if (totalSupply != 0) {
            amountLPTokens = amountSD.mul(totalSupply).div(totalLiquidity);
        }
        totalLiquidity = totalLiquidity.add(amountSD);

        _mint(_to, amountLPTokens);
        emit Mint(_to, amountLPTokens, amountSD, mintFeeSD);

        // add to credits and call delta. short circuit to save gas
        if (!batched || deltaCredit > totalLiquidity.mul(lpDeltaBP).div(BP_DENOMINATOR)) {
            _delta(defaultLPMode);
        }
    }

    function _safeTransfer(
        address _token,
        address _to,
        uint256 _value
    ) private {
        (bool success, bytes memory data) = _token.call(abi.encodeWithSelector(SELECTOR, _to, _value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "Stargate: TRANSFER_FAILED");
    }
}

File 2 of 7 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 3 of 7 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 4 of 7 : LPTokenERC20.sol
// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.7.6;

// libraries
import "@openzeppelin/contracts/math/SafeMath.sol";

contract LPTokenERC20 {
    using SafeMath for uint256;

    //---------------------------------------------------------------------------
    // CONSTANTS
    string public name;
    string public symbol;
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    // set in constructor
    bytes32 public DOMAIN_SEPARATOR;

    //---------------------------------------------------------------------------
    // VARIABLES
    uint256 public decimals;
    uint256 public totalSupply;
    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;
    mapping(address => uint256) public nonces;

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

    constructor(string memory _name, string memory _symbol) {
        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
    ) private {
        balanceOf[from] = balanceOf[from].sub(value);
        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);
        }
        _transfer(from, to, value);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][spender].add(addedValue));
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

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

File 5 of 7 : IStargateFeeLibrary.sol
// SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.7.6;
pragma abicoder v2;
import "../Pool.sol";

interface IStargateFeeLibrary {
    function getFees(
        uint256 _srcPoolId,
        uint256 _dstPoolId,
        uint16 _dstChainId,
        address _from,
        uint256 _amountSD
    ) external returns (Pool.SwapObj memory s);

    function getVersion() external view returns (string memory);
}

File 6 of 7 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @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, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

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

    /**
     * @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) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting 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) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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;
    }
}

File 7 of 7 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

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

-----Decoded View---------------
Arg [0] : _poolId (uint256): 1
Arg [1] : _router (address): 0x45a01e4e04f14f7a4a6702c74187c5f6222033cd
Arg [2] : _token (address): 0xb97ef9ef8734c71904d8002f8b6bc66dd9c48a6e
Arg [3] : _sharedDecimals (uint256): 6
Arg [4] : _localDecimals (uint256): 6
Arg [5] : _feeLibrary (address): 0x693604e757ac7e2c4a8263594a18d69c35562341
Arg [6] : _name (string): USD Coin-LP
Arg [7] : _symbol (string): S*USDC

-----Encoded View---------------
12 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [1] : 00000000000000000000000045a01e4e04f14f7a4a6702c74187c5f6222033cd
Arg [2] : 000000000000000000000000b97ef9ef8734c71904d8002f8b6bc66dd9c48a6e
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [5] : 000000000000000000000000693604e757ac7e2c4a8263594a18d69c35562341
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [8] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [9] : 55534420436f696e2d4c50000000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [11] : 532a555344430000000000000000000000000000000000000000000000000000


Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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