creation_sourcecode: {{
    "language": "Solidity",
    "sources": {
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/interfaces/ILayerZeroExecutor.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface ILayerZeroExecutor {\n    // @notice query price and assign jobs at the same time\n    // @param _dstEid - the destination endpoint identifier\n    // @param _sender - the source sending contract address. executors may apply price discrimination to senders\n    // @param _calldataSize - dynamic data size of message + caller params\n    // @param _options - optional parameters for extra service plugins, e.g. sending dust tokens at the destination chain\n    function assignJob(\n        uint32 _dstEid,\n        address _sender,\n        uint256 _calldataSize,\n        bytes calldata _options\n    ) external returns (uint256 price);\n\n    // @notice query the executor price for relaying the payload and its proof to the destination chain\n    // @param _dstEid - the destination endpoint identifier\n    // @param _sender - the source sending contract address. executors may apply price discrimination to senders\n    // @param _calldataSize - dynamic data size of message + caller params\n    // @param _options - optional parameters for extra service plugins, e.g. sending dust tokens at the destination chain\n    function getFee(\n        uint32 _dstEid,\n        address _sender,\n        uint256 _calldataSize,\n        bytes calldata _options\n    ) external view returns (uint256 price);\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/interfaces/ILayerZeroTreasury.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface ILayerZeroTreasury {\n    function getFee(\n        address _sender,\n        uint32 _dstEid,\n        uint256 _totalNativeFee,\n        bool _payInLzToken\n    ) external view returns (uint256 fee);\n\n    function payFee(\n        address _sender,\n        uint32 _dstEid,\n        uint256 _totalNativeFee,\n        bool _payInLzToken\n    ) external payable returns (uint256 fee);\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/libs/SafeCall.sol": {
        "content": "// SPDX-License-Identifier: MIT OR Apache-2.0\n\npragma solidity ^0.8.20;\n\n/// @dev copied from https://github.com/nomad-xyz/ExcessivelySafeCall/blob/main/src/ExcessivelySafeCall.sol.\nlibrary SafeCall {\n    /// @notice calls a contract with a specified gas limit and value and captures the return data\n    /// @param _target The address to call\n    /// @param _gas The amount of gas to forward to the remote contract\n    /// @param _value The value in wei to send to the remote contract\n    /// to memory.\n    /// @param _maxCopy The maximum number of bytes of returndata to copy\n    /// to memory.\n    /// @param _calldata The data to send to the remote contract\n    /// @return success and returndata, as `.call()`. Returndata is capped to\n    /// `_maxCopy` bytes.\n    function safeCall(\n        address _target,\n        uint256 _gas,\n        uint256 _value,\n        uint16 _maxCopy,\n        bytes memory _calldata\n    ) internal returns (bool, bytes memory) {\n        // check that target has code\n        uint size;\n        assembly {\n            size := extcodesize(_target)\n        }\n        if (size == 0) {\n            return (false, new bytes(0));\n        }\n\n        // set up for assembly call\n        uint256 _toCopy;\n        bool _success;\n        bytes memory _returnData = new bytes(_maxCopy);\n        // dispatch message to recipient\n        // by assembly calling \"handle\" function\n        // we call via assembly to avoid memcopying a very large returndata\n        // returned by a malicious contract\n        assembly {\n            _success := call(\n                _gas, // gas\n                _target, // recipient\n                _value, // ether value\n                add(_calldata, 0x20), // inloc\n                mload(_calldata), // inlen\n                0, // outloc\n                0 // outlen\n            )\n            // limit our copy to 100 bytes\n            _toCopy := returndatasize()\n            if gt(_toCopy, _maxCopy) {\n                _toCopy := _maxCopy\n            }\n            // Store the length of the copied bytes\n            mstore(_returnData, _toCopy)\n            // copy the bytes from returndata[0:_toCopy]\n            returndatacopy(add(_returnData, 0x20), 0, _toCopy)\n        }\n        return (_success, _returnData);\n    }\n\n    /// @notice Use when you _really_ really _really_ don't trust the called\n    /// contract. This prevents the called contract from causing reversion of\n    /// the caller in as many ways as we can.\n    /// @dev The main difference between this and a solidity low-level call is\n    /// that we limit the number of bytes that the callee can cause to be\n    /// copied to caller memory. This prevents stupid things like malicious\n    /// contracts returning 10,000,000 bytes causing a local OOG when copying\n    /// to memory.\n    /// @param _target The address to call\n    /// @param _gas The amount of gas to forward to the remote contract\n    /// @param _maxCopy The maximum number of bytes of returndata to copy\n    /// to memory.\n    /// @param _calldata The data to send to the remote contract\n    /// @return success and returndata, as `.call()`. Returndata is capped to\n    /// `_maxCopy` bytes.\n    function safeStaticCall(\n        address _target,\n        uint256 _gas,\n        uint16 _maxCopy,\n        bytes memory _calldata\n    ) internal view returns (bool, bytes memory) {\n        // check that target has code\n        uint size;\n        assembly {\n            size := extcodesize(_target)\n        }\n        if (size == 0) {\n            return (false, new bytes(0));\n        }\n\n        // set up for assembly call\n        uint256 _toCopy;\n        bool _success;\n        bytes memory _returnData = new bytes(_maxCopy);\n        // dispatch message to recipient\n        // by assembly calling \"handle\" function\n        // we call via assembly to avoid memcopying a very large returndata\n        // returned by a malicious contract\n        assembly {\n            _success := staticcall(\n                _gas, // gas\n                _target, // recipient\n                add(_calldata, 0x20), // inloc\n                mload(_calldata), // inlen\n                0, // outloc\n                0 // outlen\n            )\n            // limit our copy to 256 bytes\n            _toCopy := returndatasize()\n            if gt(_toCopy, _maxCopy) {\n                _toCopy := _maxCopy\n            }\n            // Store the length of the copied bytes\n            mstore(_returnData, _toCopy)\n            // copy the bytes from returndata[0:_toCopy]\n            returndatacopy(add(_returnData, 0x20), 0, _toCopy)\n        }\n        return (_success, _returnData);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/MessageLibBase.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\n/// @dev simply a container of endpoint address and local eid\nabstract contract MessageLibBase {\n    address internal immutable endpoint;\n    uint32 internal immutable localEid;\n\n    error LZ_MessageLib_OnlyEndpoint();\n\n    modifier onlyEndpoint() {\n        if (endpoint != msg.sender) revert LZ_MessageLib_OnlyEndpoint();\n        _;\n    }\n\n    constructor(address _endpoint, uint32 _localEid) {\n        endpoint = _endpoint;\n        localEid = _localEid;\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/SendLibBase.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { Ownable } from \"@openzeppelin/contracts/access/Ownable.sol\";\nimport { Transfer } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/libs/Transfer.sol\";\n\nimport { ILayerZeroExecutor } from \"./interfaces/ILayerZeroExecutor.sol\";\nimport { ILayerZeroTreasury } from \"./interfaces/ILayerZeroTreasury.sol\";\nimport { SafeCall } from \"./libs/SafeCall.sol\";\nimport { MessageLibBase } from \"./MessageLibBase.sol\";\n\nstruct WorkerOptions {\n    uint8 workerId;\n    bytes options;\n}\n\nstruct SetDefaultExecutorConfigParam {\n    uint32 eid;\n    ExecutorConfig config;\n}\n\nstruct ExecutorConfig {\n    uint32 maxMessageSize;\n    address executor;\n}\n\n/// @dev base contract for both SendLibBaseE1 and SendLibBaseE2\nabstract contract SendLibBase is MessageLibBase, Ownable {\n    using SafeCall for address;\n\n    address private constant DEFAULT_CONFIG = address(0);\n    uint16 internal constant TREASURY_MAX_COPY = 32;\n\n    uint256 internal immutable treasuryGasLimit;\n    uint256 internal treasuryNativeFeeCap;\n\n    // config\n    address public treasury;\n    mapping(address oapp => mapping(uint32 eid => ExecutorConfig)) public executorConfigs;\n\n    // accumulated fees for workers and treasury\n    mapping(address worker => uint256) public fees;\n\n    event ExecutorFeePaid(address executor, uint256 fee);\n    event TreasurySet(address treasury);\n    event DefaultExecutorConfigsSet(SetDefaultExecutorConfigParam[] params);\n    event ExecutorConfigSet(address oapp, uint32 eid, ExecutorConfig config);\n    event TreasuryNativeFeeCapSet(uint256 newTreasuryNativeFeeCap);\n\n    error LZ_MessageLib_InvalidMessageSize(uint256 actual, uint256 max);\n    error LZ_MessageLib_InvalidAmount(uint256 requested, uint256 available);\n    error LZ_MessageLib_TransferFailed();\n    error LZ_MessageLib_InvalidExecutor();\n    error LZ_MessageLib_ZeroMessageSize();\n\n    constructor(\n        address _endpoint,\n        uint32 _localEid,\n        uint256 _treasuryGasLimit,\n        uint256 _treasuryNativeFeeCap\n    ) MessageLibBase(_endpoint, _localEid) {\n        treasuryGasLimit = _treasuryGasLimit;\n        treasuryNativeFeeCap = _treasuryNativeFeeCap;\n    }\n\n    function setDefaultExecutorConfigs(SetDefaultExecutorConfigParam[] calldata _params) external onlyOwner {\n        for (uint256 i = 0; i < _params.length; ++i) {\n            SetDefaultExecutorConfigParam calldata param = _params[i];\n\n            if (param.config.executor == address(0x0)) revert LZ_MessageLib_InvalidExecutor();\n            if (param.config.maxMessageSize == 0) revert LZ_MessageLib_ZeroMessageSize();\n\n            executorConfigs[DEFAULT_CONFIG][param.eid] = param.config;\n        }\n        emit DefaultExecutorConfigsSet(_params);\n    }\n\n    /// @dev the new value can not be greater than the old value, i.e. down only\n    function setTreasuryNativeFeeCap(uint256 _newTreasuryNativeFeeCap) external onlyOwner {\n        // assert the new value is no greater than the old value\n        if (_newTreasuryNativeFeeCap > treasuryNativeFeeCap)\n            revert LZ_MessageLib_InvalidAmount(_newTreasuryNativeFeeCap, treasuryNativeFeeCap);\n        treasuryNativeFeeCap = _newTreasuryNativeFeeCap;\n        emit TreasuryNativeFeeCapSet(_newTreasuryNativeFeeCap);\n    }\n\n    // ============================ View ===================================\n    // @dev get the executor config and if not set, return the default config\n    function getExecutorConfig(address _oapp, uint32 _remoteEid) public view returns (ExecutorConfig memory rtnConfig) {\n        ExecutorConfig storage defaultConfig = executorConfigs[DEFAULT_CONFIG][_remoteEid];\n        ExecutorConfig storage customConfig = executorConfigs[_oapp][_remoteEid];\n\n        uint32 maxMessageSize = customConfig.maxMessageSize;\n        rtnConfig.maxMessageSize = maxMessageSize != 0 ? maxMessageSize : defaultConfig.maxMessageSize;\n\n        address executor = customConfig.executor;\n        rtnConfig.executor = executor != address(0x0) ? executor : defaultConfig.executor;\n    }\n\n    // ======================= Internal =======================\n    function _assertMessageSize(uint256 _actual, uint256 _max) internal pure {\n        if (_actual > _max) revert LZ_MessageLib_InvalidMessageSize(_actual, _max);\n    }\n\n    function _payExecutor(\n        address _executor,\n        uint32 _dstEid,\n        address _sender,\n        uint256 _msgSize,\n        bytes memory _executorOptions\n    ) internal returns (uint256 executorFee) {\n        executorFee = ILayerZeroExecutor(_executor).assignJob(_dstEid, _sender, _msgSize, _executorOptions);\n        if (executorFee > 0) {\n            fees[_executor] += executorFee;\n        }\n        emit ExecutorFeePaid(_executor, executorFee);\n    }\n\n    function _payTreasury(\n        address _sender,\n        uint32 _dstEid,\n        uint256 _totalNativeFee,\n        bool _payInLzToken\n    ) internal returns (uint256 treasuryNativeFee, uint256 lzTokenFee) {\n        if (treasury != address(0x0)) {\n            bytes memory callData = abi.encodeCall(\n                ILayerZeroTreasury.payFee,\n                (_sender, _dstEid, _totalNativeFee, _payInLzToken)\n            );\n            (bool success, bytes memory result) = treasury.safeCall(treasuryGasLimit, 0, TREASURY_MAX_COPY, callData);\n\n            (treasuryNativeFee, lzTokenFee) = _parseTreasuryResult(_totalNativeFee, _payInLzToken, success, result);\n            // fee should be in lzTokenFee if payInLzToken, otherwise in native\n            if (treasuryNativeFee > 0) {\n                fees[treasury] += treasuryNativeFee;\n            }\n        }\n    }\n\n    /// @dev the abstract process for quote() is:\n    /// 0/ split out the executor options and options of other workers\n    /// 1/ quote workers\n    /// 2/ quote executor\n    /// 3/ quote treasury\n    /// @return nativeFee, lzTokenFee\n    function _quote(\n        address _sender,\n        uint32 _dstEid,\n        uint256 _msgSize,\n        bool _payInLzToken,\n        bytes calldata _options\n    ) internal view returns (uint256, uint256) {\n        (bytes memory executorOptions, WorkerOptions[] memory validationOptions) = _splitOptions(_options);\n\n        // quote the verifier used in the library. for ULN, it is a list of DVNs\n        uint256 nativeFee = _quoteVerifier(_sender, _dstEid, validationOptions);\n\n        // quote executor\n        ExecutorConfig memory config = getExecutorConfig(_sender, _dstEid);\n        // assert msg size\n        _assertMessageSize(_msgSize, config.maxMessageSize);\n\n        nativeFee += ILayerZeroExecutor(config.executor).getFee(_dstEid, _sender, _msgSize, executorOptions);\n\n        // quote treasury\n        (uint256 treasuryNativeFee, uint256 lzTokenFee) = _quoteTreasury(_sender, _dstEid, nativeFee, _payInLzToken);\n        nativeFee += treasuryNativeFee;\n\n        return (nativeFee, lzTokenFee);\n    }\n\n    /// @dev this interface should be DoS-free if the user is paying with native. properties\n    /// 1/ treasury can return an overly high lzToken fee\n    /// 2/ if treasury returns an overly high native fee, it will be capped by maxNativeFee,\n    ///    which can be reasoned with the configurations\n    /// 3/ the owner can not configure the treasury in a way that force this function to revert\n    function _quoteTreasury(\n        address _sender,\n        uint32 _dstEid,\n        uint256 _totalNativeFee,\n        bool _payInLzToken\n    ) internal view returns (uint256 nativeFee, uint256 lzTokenFee) {\n        // treasury must be set, and it has to be a contract\n        if (treasury != address(0x0)) {\n            bytes memory callData = abi.encodeCall(\n                ILayerZeroTreasury.getFee,\n                (_sender, _dstEid, _totalNativeFee, _payInLzToken)\n            );\n            (bool success, bytes memory result) = treasury.safeStaticCall(\n                treasuryGasLimit,\n                TREASURY_MAX_COPY,\n                callData\n            );\n\n            return _parseTreasuryResult(_totalNativeFee, _payInLzToken, success, result);\n        }\n    }\n\n    function _parseTreasuryResult(\n        uint256 _totalNativeFee,\n        bool _payInLzToken,\n        bool _success,\n        bytes memory _result\n    ) internal view returns (uint256 nativeFee, uint256 lzTokenFee) {\n        // failure, charges nothing\n        if (!_success || _result.length < TREASURY_MAX_COPY) return (0, 0);\n\n        // parse the result\n        uint256 treasureFeeQuote = abi.decode(_result, (uint256));\n        if (_payInLzToken) {\n            lzTokenFee = treasureFeeQuote;\n        } else {\n            // pay in native\n            // we must prevent high-treasuryFee Dos attack\n            // nativeFee = min(treasureFeeQuote, maxNativeFee)\n            // opportunistically raise the maxNativeFee to be the same as _totalNativeFee\n            // can't use the _totalNativeFee alone because the oapp can use custom workers to force the fee to 0.\n            // maxNativeFee = max (_totalNativeFee, treasuryNativeFeeCap)\n            uint256 maxNativeFee = _totalNativeFee > treasuryNativeFeeCap ? _totalNativeFee : treasuryNativeFeeCap;\n\n            // min (treasureFeeQuote, nativeFeeCap)\n            nativeFee = treasureFeeQuote > maxNativeFee ? maxNativeFee : treasureFeeQuote;\n        }\n    }\n\n    /// @dev authenticated by msg.sender only\n    function _debitFee(uint256 _amount) internal {\n        uint256 fee = fees[msg.sender];\n        if (_amount > fee) revert LZ_MessageLib_InvalidAmount(_amount, fee);\n        unchecked {\n            fees[msg.sender] = fee - _amount;\n        }\n    }\n\n    function _setTreasury(address _treasury) internal {\n        treasury = _treasury;\n        emit TreasurySet(_treasury);\n    }\n\n    function _setExecutorConfig(uint32 _remoteEid, address _oapp, ExecutorConfig memory _config) internal {\n        executorConfigs[_oapp][_remoteEid] = _config;\n        emit ExecutorConfigSet(_oapp, _remoteEid, _config);\n    }\n\n    // ======================= Virtual =======================\n    /// @dev these two functions will be overridden with specific logics of the library function\n    function _quoteVerifier(\n        address _oapp,\n        uint32 _eid,\n        WorkerOptions[] memory _options\n    ) internal view virtual returns (uint256 nativeFee);\n\n    /// @dev this function will split the options into executorOptions and validationOptions\n    function _splitOptions(\n        bytes calldata _options\n    ) internal view virtual returns (bytes memory executorOptions, WorkerOptions[] memory validationOptions);\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/SendLibBaseE2.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { IERC165 } from \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\nimport { ERC165 } from \"@openzeppelin/contracts/utils/introspection/ERC165.sol\";\n\nimport { ILayerZeroEndpointV2, MessagingFee } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol\";\nimport { IMessageLib, MessageLibType } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLib.sol\";\nimport { ISendLib, Packet } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ISendLib.sol\";\nimport { Transfer } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/libs/Transfer.sol\";\n\nimport { SendLibBase, WorkerOptions, ExecutorConfig } from \"./SendLibBase.sol\";\n\n/// @dev send-side message library base contract on endpoint v2.\n/// design: the high level logic is the same as SendLibBaseE1\n/// 1/ with added interfaces\n/// 2/ adapt the functions to the new types, like uint32 for eid, address for sender.\nabstract contract SendLibBaseE2 is SendLibBase, ERC165, ISendLib {\n    event NativeFeeWithdrawn(address worker, address receiver, uint256 amount);\n    event LzTokenFeeWithdrawn(address lzToken, address receiver, uint256 amount);\n\n    error LZ_MessageLib_NotTreasury();\n    error LZ_MessageLib_CannotWithdrawAltToken();\n\n    constructor(\n        address _endpoint,\n        uint256 _treasuryGasLimit,\n        uint256 _treasuryNativeFeeCap\n    ) SendLibBase(_endpoint, ILayerZeroEndpointV2(_endpoint).eid(), _treasuryGasLimit, _treasuryNativeFeeCap) {}\n\n    function supportsInterface(bytes4 _interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n        return\n            _interfaceId == type(IMessageLib).interfaceId ||\n            _interfaceId == type(ISendLib).interfaceId ||\n            super.supportsInterface(_interfaceId);\n    }\n\n    // ========================= OnlyEndpoint =========================\n    // @dev this function is marked as virtual and public for testing purpose\n    function send(\n        Packet calldata _packet,\n        bytes calldata _options,\n        bool _payInLzToken\n    ) public virtual onlyEndpoint returns (MessagingFee memory, bytes memory) {\n        (bytes memory encodedPacket, uint256 totalNativeFee) = _payWorkers(_packet, _options);\n\n        (uint256 treasuryNativeFee, uint256 lzTokenFee) = _payTreasury(\n            _packet.sender,\n            _packet.dstEid,\n            totalNativeFee,\n            _payInLzToken\n        );\n        totalNativeFee += treasuryNativeFee;\n\n        return (MessagingFee(totalNativeFee, lzTokenFee), encodedPacket);\n    }\n\n    // ========================= OnlyOwner =========================\n    function setTreasury(address _treasury) external onlyOwner {\n        _setTreasury(_treasury);\n    }\n\n    // ========================= External =========================\n    /// @dev E2 only\n    function withdrawFee(address _to, uint256 _amount) external {\n        _debitFee(_amount);\n        address nativeToken = ILayerZeroEndpointV2(endpoint).nativeToken();\n        // transfers native if nativeToken == address(0x0)\n        Transfer.nativeOrToken(nativeToken, _to, _amount);\n        emit NativeFeeWithdrawn(msg.sender, _to, _amount);\n    }\n\n    /// @dev _lzToken is a user-supplied value because lzToken might change in the endpoint before all lzToken can be taken out\n    /// @dev E2 only\n    /// @dev treasury only function\n    function withdrawLzTokenFee(address _lzToken, address _to, uint256 _amount) external {\n        if (msg.sender != treasury) revert LZ_MessageLib_NotTreasury();\n\n        // lz token cannot be the same as the native token\n        if (ILayerZeroEndpointV2(endpoint).nativeToken() == _lzToken) revert LZ_MessageLib_CannotWithdrawAltToken();\n\n        Transfer.token(_lzToken, _to, _amount);\n\n        emit LzTokenFeeWithdrawn(_lzToken, _to, _amount);\n    }\n\n    // ========================= View =========================\n    function quote(\n        Packet calldata _packet,\n        bytes calldata _options,\n        bool _payInLzToken\n    ) external view returns (MessagingFee memory) {\n        (uint256 nativeFee, uint256 lzTokenFee) = _quote(\n            _packet.sender,\n            _packet.dstEid,\n            _packet.message.length,\n            _payInLzToken,\n            _options\n        );\n        return MessagingFee(nativeFee, lzTokenFee);\n    }\n\n    function messageLibType() external pure virtual override returns (MessageLibType) {\n        return MessageLibType.Send;\n    }\n\n    // ========================= Internal =========================\n    /// 1/ handle executor\n    /// 2/ handle other workers\n    function _payWorkers(\n        Packet calldata _packet,\n        bytes calldata _options\n    ) internal returns (bytes memory encodedPacket, uint256 totalNativeFee) {\n        // split workers options\n        (bytes memory executorOptions, WorkerOptions[] memory validationOptions) = _splitOptions(_options);\n\n        // handle executor\n        ExecutorConfig memory config = getExecutorConfig(_packet.sender, _packet.dstEid);\n        uint256 msgSize = _packet.message.length;\n        _assertMessageSize(msgSize, config.maxMessageSize);\n        totalNativeFee += _payExecutor(config.executor, _packet.dstEid, _packet.sender, msgSize, executorOptions);\n\n        // handle other workers\n        (uint256 verifierFee, bytes memory packetBytes) = _payVerifier(_packet, validationOptions); //for ULN, it will be dvns\n        totalNativeFee += verifierFee;\n\n        encodedPacket = packetBytes;\n    }\n\n    // ======================= Virtual =======================\n    // For implementation to override\n    function _payVerifier(\n        Packet calldata _packet,\n        WorkerOptions[] memory _options\n    ) internal virtual returns (uint256 otherWorkerFees, bytes memory encodedPacket);\n\n    // receive native token from endpoint\n    receive() external payable virtual {}\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/interfaces/ILayerZeroDVN.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface ILayerZeroDVN {\n    struct AssignJobParam {\n        uint32 dstEid;\n        bytes packetHeader;\n        bytes32 payloadHash;\n        uint64 confirmations;\n        address sender;\n    }\n\n    // @notice query price and assign jobs at the same time\n    // @param _dstEid - the destination endpoint identifier\n    // @param _packetHeader - version + nonce + path\n    // @param _payloadHash - hash of guid + message\n    // @param _confirmations - block confirmation delay before relaying blocks\n    // @param _sender - the source sending contract address\n    // @param _options - options\n    function assignJob(AssignJobParam calldata _param, bytes calldata _options) external payable returns (uint256 fee);\n\n    // @notice query the dvn fee for relaying block information to the destination chain\n    // @param _dstEid the destination endpoint identifier\n    // @param _confirmations - block confirmation delay before relaying blocks\n    // @param _sender - the source sending contract address\n    // @param _options - options\n    function getFee(\n        uint32 _dstEid,\n        uint64 _confirmations,\n        address _sender,\n        bytes calldata _options\n    ) external view returns (uint256 fee);\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/libs/DVNOptions.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { BytesLib } from \"solidity-bytes-utils/contracts/BytesLib.sol\";\n\nimport { BitMap256 } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/BitMaps.sol\";\nimport { CalldataBytesLib } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/libs/CalldataBytesLib.sol\";\n\nlibrary DVNOptions {\n    using CalldataBytesLib for bytes;\n    using BytesLib for bytes;\n\n    uint8 internal constant WORKER_ID = 2;\n    uint8 internal constant OPTION_TYPE_PRECRIME = 1;\n\n    error DVN_InvalidDVNIdx();\n    error DVN_InvalidDVNOptions(uint256 cursor);\n\n    /// @dev group dvn options by its idx\n    /// @param _options [dvn_id][dvn_option][dvn_id][dvn_option]...\n    ///        dvn_option = [option_size][dvn_idx][option_type][option]\n    ///        option_size = len(dvn_idx) + len(option_type) + len(option)\n    ///        dvn_id: uint8, dvn_idx: uint8, option_size: uint16, option_type: uint8, option: bytes\n    /// @return dvnOptions the grouped options, still share the same format of _options\n    /// @return dvnIndices the dvn indices\n    function groupDVNOptionsByIdx(\n        bytes memory _options\n    ) internal pure returns (bytes[] memory dvnOptions, uint8[] memory dvnIndices) {\n        if (_options.length == 0) return (dvnOptions, dvnIndices);\n\n        uint8 numDVNs = getNumDVNs(_options);\n\n        // if there is only 1 dvn, we can just return the whole options\n        if (numDVNs == 1) {\n            dvnOptions = new bytes[](1);\n            dvnOptions[0] = _options;\n\n            dvnIndices = new uint8[](1);\n            dvnIndices[0] = _options.toUint8(3); // dvn idx\n            return (dvnOptions, dvnIndices);\n        }\n\n        // otherwise, we need to group the options by dvn_idx\n        dvnIndices = new uint8[](numDVNs);\n        dvnOptions = new bytes[](numDVNs);\n        unchecked {\n            uint256 cursor = 0;\n            uint256 start = 0;\n            uint8 lastDVNIdx = 255; // 255 is an invalid dvn_idx\n\n            while (cursor < _options.length) {\n                ++cursor; // skip worker_id\n\n                // optionLength asserted in getNumDVNs (skip check)\n                uint16 optionLength = _options.toUint16(cursor);\n                cursor += 2;\n\n                // dvnIdx asserted in getNumDVNs (skip check)\n                uint8 dvnIdx = _options.toUint8(cursor);\n\n                // dvnIdx must equal to the lastDVNIdx for the first option\n                // so it is always skipped in the first option\n                // this operation slices out options whenever the scan finds a different lastDVNIdx\n                if (lastDVNIdx == 255) {\n                    lastDVNIdx = dvnIdx;\n                } else if (dvnIdx != lastDVNIdx) {\n                    uint256 len = cursor - start - 3; // 3 is for worker_id and option_length\n                    bytes memory opt = _options.slice(start, len);\n                    _insertDVNOptions(dvnOptions, dvnIndices, lastDVNIdx, opt);\n\n                    // reset the start and lastDVNIdx\n                    start += len;\n                    lastDVNIdx = dvnIdx;\n                }\n\n                cursor += optionLength;\n            }\n\n            // skip check the cursor here because the cursor is asserted in getNumDVNs\n            // if we have reached the end of the options, we need to process the last dvn\n            uint256 size = cursor - start;\n            bytes memory op = _options.slice(start, size);\n            _insertDVNOptions(dvnOptions, dvnIndices, lastDVNIdx, op);\n\n            // revert dvnIndices to start from 0\n            for (uint8 i = 0; i < numDVNs; ++i) {\n                --dvnIndices[i];\n            }\n        }\n    }\n\n    function _insertDVNOptions(\n        bytes[] memory _dvnOptions,\n        uint8[] memory _dvnIndices,\n        uint8 _dvnIdx,\n        bytes memory _newOptions\n    ) internal pure {\n        // dvnIdx starts from 0 but default value of dvnIndices is 0,\n        // so we tell if the slot is empty by adding 1 to dvnIdx\n        if (_dvnIdx == 255) revert DVN_InvalidDVNIdx();\n        uint8 dvnIdxAdj = _dvnIdx + 1;\n\n        for (uint256 j = 0; j < _dvnIndices.length; ++j) {\n            uint8 index = _dvnIndices[j];\n            if (dvnIdxAdj == index) {\n                _dvnOptions[j] = abi.encodePacked(_dvnOptions[j], _newOptions);\n                break;\n            } else if (index == 0) {\n                // empty slot, that means it is the first time we see this dvn\n                _dvnIndices[j] = dvnIdxAdj;\n                _dvnOptions[j] = _newOptions;\n                break;\n            }\n        }\n    }\n\n    /// @dev get the number of unique dvns\n    /// @param _options the format is the same as groupDVNOptionsByIdx\n    function getNumDVNs(bytes memory _options) internal pure returns (uint8 numDVNs) {\n        uint256 cursor = 0;\n        BitMap256 bitmap;\n\n        // find number of unique dvn_idx\n        unchecked {\n            while (cursor < _options.length) {\n                ++cursor; // skip worker_id\n\n                uint16 optionLength = _options.toUint16(cursor);\n                cursor += 2;\n                if (optionLength < 2) revert DVN_InvalidDVNOptions(cursor); // at least 1 byte for dvn_idx and 1 byte for option_type\n\n                uint8 dvnIdx = _options.toUint8(cursor);\n\n                // if dvnIdx is not set, increment numDVNs\n                // max num of dvns is 255, 255 is an invalid dvn_idx\n                // The order of the dvnIdx is not required to be sequential, as enforcing the order may weaken\n                // the composability of the options. e.g. if we refrain from enforcing the order, an OApp that has\n                // already enforced certain options can append additional options to the end of the enforced\n                // ones without restrictions.\n                if (dvnIdx == 255) revert DVN_InvalidDVNIdx();\n                if (!bitmap.get(dvnIdx)) {\n                    ++numDVNs;\n                    bitmap = bitmap.set(dvnIdx);\n                }\n\n                cursor += optionLength;\n            }\n        }\n        if (cursor != _options.length) revert DVN_InvalidDVNOptions(cursor);\n    }\n\n    /// @dev decode the next dvn option from _options starting from the specified cursor\n    /// @param _options the format is the same as groupDVNOptionsByIdx\n    /// @param _cursor the cursor to start decoding\n    /// @return optionType the type of the option\n    /// @return option the option\n    /// @return cursor the cursor to start decoding the next option\n    function nextDVNOption(\n        bytes calldata _options,\n        uint256 _cursor\n    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {\n        unchecked {\n            // skip worker id\n            cursor = _cursor + 1;\n\n            // read option size\n            uint16 size = _options.toU16(cursor);\n            cursor += 2;\n\n            // read option type\n            optionType = _options.toU8(cursor + 1); // skip dvn_idx\n\n            // startCursor and endCursor are used to slice the option from _options\n            uint256 startCursor = cursor + 2; // skip option type and dvn_idx\n            uint256 endCursor = cursor + size;\n            option = _options[startCursor:endCursor];\n            cursor += size;\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/libs/UlnOptions.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { SafeCast } from \"@openzeppelin/contracts/utils/math/SafeCast.sol\";\n\nimport { ExecutorOptions } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/ExecutorOptions.sol\";\n\nimport { DVNOptions } from \"./DVNOptions.sol\";\n\nlibrary UlnOptions {\n    using SafeCast for uint256;\n\n    uint16 internal constant TYPE_1 = 1; // legacy options type 1\n    uint16 internal constant TYPE_2 = 2; // legacy options type 2\n    uint16 internal constant TYPE_3 = 3;\n\n    error LZ_ULN_InvalidWorkerOptions(uint256 cursor);\n    error LZ_ULN_InvalidWorkerId(uint8 workerId);\n    error LZ_ULN_InvalidLegacyType1Option();\n    error LZ_ULN_InvalidLegacyType2Option();\n    error LZ_ULN_UnsupportedOptionType(uint16 optionType);\n\n    /// @dev decode the options into executorOptions and dvnOptions\n    /// @param _options the options can be either legacy options (type 1 or 2) or type 3 options\n    /// @return executorOptions the executor options, share the same format of type 3 options\n    /// @return dvnOptions the dvn options, share the same format of type 3 options\n    function decode(\n        bytes calldata _options\n    ) internal pure returns (bytes memory executorOptions, bytes memory dvnOptions) {\n        // at least 2 bytes for the option type, but can have no options\n        if (_options.length < 2) revert LZ_ULN_InvalidWorkerOptions(0);\n\n        uint16 optionsType = uint16(bytes2(_options[0:2]));\n        uint256 cursor = 2;\n\n        // type3 options: [worker_option][worker_option]...\n        // worker_option: [worker_id][option_size][option]\n        // worker_id: uint8, option_size: uint16, option: bytes\n        if (optionsType == TYPE_3) {\n            unchecked {\n                uint256 start = cursor;\n                uint8 lastWorkerId; // worker_id starts from 1, so 0 is an invalid worker_id\n\n                // heuristic: we assume that the options are mostly EXECUTOR options only\n                // checking the workerID can reduce gas usage for most cases\n                while (cursor < _options.length) {\n                    uint8 workerId = uint8(bytes1(_options[cursor:cursor + 1]));\n                    if (workerId == 0) revert LZ_ULN_InvalidWorkerId(0);\n\n                    // workerId must equal to the lastWorkerId for the first option\n                    // so it is always skipped in the first option\n                    // this operation slices out options whenever the the scan finds a different workerId\n                    if (lastWorkerId == 0) {\n                        lastWorkerId = workerId;\n                    } else if (workerId != lastWorkerId) {\n                        bytes calldata op = _options[start:cursor]; // slice out the last worker's options\n                        (executorOptions, dvnOptions) = _insertWorkerOptions(\n                            executorOptions,\n                            dvnOptions,\n                            lastWorkerId,\n                            op\n                        );\n\n                        // reset the start cursor and lastWorkerId\n                        start = cursor;\n                        lastWorkerId = workerId;\n                    }\n\n                    ++cursor; // for workerId\n\n                    uint16 size = uint16(bytes2(_options[cursor:cursor + 2]));\n                    if (size == 0) revert LZ_ULN_InvalidWorkerOptions(cursor);\n                    cursor += size + 2;\n                }\n\n                // the options length must be the same as the cursor at the end\n                if (cursor != _options.length) revert LZ_ULN_InvalidWorkerOptions(cursor);\n\n                // if we have reached the end of the options and the options are not empty\n                // we need to process the last worker's options\n                if (_options.length > 2) {\n                    bytes calldata op = _options[start:cursor];\n                    (executorOptions, dvnOptions) = _insertWorkerOptions(executorOptions, dvnOptions, lastWorkerId, op);\n                }\n            }\n        } else {\n            executorOptions = decodeLegacyOptions(optionsType, _options);\n        }\n    }\n\n    function _insertWorkerOptions(\n        bytes memory _executorOptions,\n        bytes memory _dvnOptions,\n        uint8 _workerId,\n        bytes calldata _newOptions\n    ) private pure returns (bytes memory, bytes memory) {\n        if (_workerId == ExecutorOptions.WORKER_ID) {\n            _executorOptions = _executorOptions.length == 0\n                ? _newOptions\n                : abi.encodePacked(_executorOptions, _newOptions);\n        } else if (_workerId == DVNOptions.WORKER_ID) {\n            _dvnOptions = _dvnOptions.length == 0 ? _newOptions : abi.encodePacked(_dvnOptions, _newOptions);\n        } else {\n            revert LZ_ULN_InvalidWorkerId(_workerId);\n        }\n        return (_executorOptions, _dvnOptions);\n    }\n\n    /// @dev decode the legacy options (type 1 or 2) into executorOptions\n    /// @param _optionType the legacy option type\n    /// @param _options the legacy options, which still has the option type in the first 2 bytes\n    /// @return executorOptions the executor options, share the same format of type 3 options\n    /// Data format:\n    /// legacy type 1: [extraGas]\n    /// legacy type 2: [extraGas][dstNativeAmt][dstNativeAddress]\n    /// extraGas: uint256, dstNativeAmt: uint256, dstNativeAddress: bytes\n    function decodeLegacyOptions(\n        uint16 _optionType,\n        bytes calldata _options\n    ) internal pure returns (bytes memory executorOptions) {\n        if (_optionType == TYPE_1) {\n            if (_options.length != 34) revert LZ_ULN_InvalidLegacyType1Option();\n\n            // execution gas\n            uint128 executionGas = uint256(bytes32(_options[2:2 + 32])).toUint128();\n\n            // dont use the encode function in the ExecutorOptions lib for saving gas by calling abi.encodePacked once\n            // the result is a lzReceive option: [executor_id][option_size][option_type][execution_gas]\n            // option_type: uint8, execution_gas: uint128\n            // option_size = len(option_type) + len(execution_gas) = 1 + 16 = 17\n            executorOptions = abi.encodePacked(\n                ExecutorOptions.WORKER_ID,\n                uint16(17), // 16 + 1, 16 for option_length, + 1 for option_type\n                ExecutorOptions.OPTION_TYPE_LZRECEIVE,\n                executionGas\n            );\n        } else if (_optionType == TYPE_2) {\n            // receiver size <= 32\n            if (_options.length <= 66 || _options.length > 98) revert LZ_ULN_InvalidLegacyType2Option();\n\n            // execution gas\n            uint128 executionGas = uint256(bytes32(_options[2:2 + 32])).toUint128();\n\n            // nativeDrop (amount + receiver)\n            uint128 amount = uint256(bytes32(_options[34:34 + 32])).toUint128(); // offset 2 + 32\n            bytes32 receiver;\n            unchecked {\n                uint256 receiverLen = _options.length - 66; // offset 2 + 32 + 32\n                receiver = bytes32(_options[66:]);\n                receiver = receiver >> (8 * (32 - receiverLen)); // padding 0 to the left\n            }\n\n            // dont use the encode function in the ExecutorOptions lib for saving gas by calling abi.encodePacked once\n            // the result has one lzReceive option and one nativeDrop option:\n            //      [executor_id][lzReceive_option_size][option_type][execution_gas] +\n            //      [executor_id][nativeDrop_option_size][option_type][nativeDrop_amount][receiver]\n            // option_type: uint8, execution_gas: uint128, nativeDrop_amount: uint128, receiver: bytes32\n            // lzReceive_option_size = len(option_type) + len(execution_gas) = 1 + 16 = 17\n            // nativeDrop_option_size = len(option_type) + len(nativeDrop_amount) + len(receiver) = 1 + 16 + 32 = 49\n            executorOptions = abi.encodePacked(\n                ExecutorOptions.WORKER_ID,\n                uint16(17), // 16 + 1, 16 for option_length, + 1 for option_type\n                ExecutorOptions.OPTION_TYPE_LZRECEIVE,\n                executionGas,\n                ExecutorOptions.WORKER_ID,\n                uint16(49), // 48 + 1, 32 + 16 for option_length, + 1 for option_type\n                ExecutorOptions.OPTION_TYPE_NATIVE_DROP,\n                amount,\n                receiver\n            );\n        } else {\n            revert LZ_ULN_UnsupportedOptionType(_optionType);\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/SendUlnBase.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { Packet } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ISendLib.sol\";\nimport { PacketV1Codec } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/PacketV1Codec.sol\";\n\nimport { ILayerZeroDVN } from \"./interfaces/ILayerZeroDVN.sol\";\nimport { DVNOptions } from \"./libs/DVNOptions.sol\";\nimport { UlnOptions } from \"./libs/UlnOptions.sol\";\nimport { WorkerOptions } from \"../SendLibBase.sol\";\nimport { UlnConfig, UlnBase } from \"./UlnBase.sol\";\n\n/// @dev includes the utility functions for checking ULN states and logics\nabstract contract SendUlnBase is UlnBase {\n    event DVNFeePaid(address[] requiredDVNs, address[] optionalDVNs, uint256[] fees);\n\n    function _splitUlnOptions(bytes calldata _options) internal pure returns (bytes memory, WorkerOptions[] memory) {\n        (bytes memory executorOpts, bytes memory dvnOpts) = UlnOptions.decode(_options);\n\n        if (dvnOpts.length == 0) {\n            return (executorOpts, new WorkerOptions[](0));\n        }\n\n        WorkerOptions[] memory workerOpts = new WorkerOptions[](1);\n        workerOpts[0] = WorkerOptions(DVNOptions.WORKER_ID, dvnOpts);\n        return (executorOpts, workerOpts);\n    }\n\n    /// ---------- pay and assign jobs ----------\n\n    function _payDVNs(\n        mapping(address => uint256) storage _fees,\n        Packet memory _packet,\n        WorkerOptions[] memory _options\n    ) internal returns (uint256 totalFee, bytes memory encodedPacket) {\n        bytes memory packetHeader = PacketV1Codec.encodePacketHeader(_packet);\n        bytes memory payload = PacketV1Codec.encodePayload(_packet);\n        bytes32 payloadHash = keccak256(payload);\n        uint32 dstEid = _packet.dstEid;\n        address sender = _packet.sender;\n        UlnConfig memory config = getUlnConfig(sender, dstEid);\n\n        // if options is not empty, it must be dvn options\n        bytes memory dvnOptions = _options.length == 0 ? bytes(\"\") : _options[0].options;\n        uint256[] memory dvnFees;\n        (totalFee, dvnFees) = _assignJobs(\n            _fees,\n            config,\n            ILayerZeroDVN.AssignJobParam(dstEid, packetHeader, payloadHash, config.confirmations, sender),\n            dvnOptions\n        );\n        encodedPacket = abi.encodePacked(packetHeader, payload);\n\n        emit DVNFeePaid(config.requiredDVNs, config.optionalDVNs, dvnFees);\n    }\n\n    function _assignJobs(\n        mapping(address => uint256) storage _fees,\n        UlnConfig memory _ulnConfig,\n        ILayerZeroDVN.AssignJobParam memory _param,\n        bytes memory dvnOptions\n    ) internal returns (uint256 totalFee, uint256[] memory dvnFees) {\n        (bytes[] memory optionsArray, uint8[] memory dvnIds) = DVNOptions.groupDVNOptionsByIdx(dvnOptions);\n\n        uint8 dvnsLength = _ulnConfig.requiredDVNCount + _ulnConfig.optionalDVNCount;\n        dvnFees = new uint256[](dvnsLength);\n        for (uint8 i = 0; i < dvnsLength; ++i) {\n            address dvn = i < _ulnConfig.requiredDVNCount\n                ? _ulnConfig.requiredDVNs[i]\n                : _ulnConfig.optionalDVNs[i - _ulnConfig.requiredDVNCount];\n\n            bytes memory options = \"\";\n            for (uint256 j = 0; j < dvnIds.length; ++j) {\n                if (dvnIds[j] == i) {\n                    options = optionsArray[j];\n                    break;\n                }\n            }\n\n            dvnFees[i] = ILayerZeroDVN(dvn).assignJob(_param, options);\n            if (dvnFees[i] > 0) {\n                _fees[dvn] += dvnFees[i];\n                totalFee += dvnFees[i];\n            }\n        }\n    }\n\n    /// ---------- quote ----------\n    function _quoteDVNs(\n        address _sender,\n        uint32 _dstEid,\n        WorkerOptions[] memory _options\n    ) internal view returns (uint256 totalFee) {\n        UlnConfig memory config = getUlnConfig(_sender, _dstEid);\n\n        // if options is not empty, it must be dvn options\n        bytes memory dvnOptions = _options.length == 0 ? bytes(\"\") : _options[0].options;\n        (bytes[] memory optionsArray, uint8[] memory dvnIndices) = DVNOptions.groupDVNOptionsByIdx(dvnOptions);\n\n        totalFee = _getFees(config, _dstEid, _sender, optionsArray, dvnIndices);\n    }\n\n    function _getFees(\n        UlnConfig memory _config,\n        uint32 _dstEid,\n        address _sender,\n        bytes[] memory _optionsArray,\n        uint8[] memory _dvnIds\n    ) internal view returns (uint256 totalFee) {\n        // here we merge 2 list of dvns into 1 to allocate the indexed dvn options to the right dvn\n        uint8 dvnsLength = _config.requiredDVNCount + _config.optionalDVNCount;\n        for (uint8 i = 0; i < dvnsLength; ++i) {\n            address dvn = i < _config.requiredDVNCount\n                ? _config.requiredDVNs[i]\n                : _config.optionalDVNs[i - _config.requiredDVNCount];\n\n            bytes memory options = \"\";\n            // it is a double loop here. however, if the list is short, the cost is very acceptable.\n            for (uint256 j = 0; j < _dvnIds.length; ++j) {\n                if (_dvnIds[j] == i) {\n                    options = _optionsArray[j];\n                    break;\n                }\n            }\n            totalFee += ILayerZeroDVN(dvn).getFee(_dstEid, _config.confirmations, _sender, options);\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/uln302/SendUln302.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { Packet } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ISendLib.sol\";\nimport { SetConfigParam } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLibManager.sol\";\n\nimport { ExecutorConfig } from \"../../SendLibBase.sol\";\nimport { SendLibBaseE2, WorkerOptions } from \"../../SendLibBaseE2.sol\";\nimport { UlnConfig } from \"../UlnBase.sol\";\nimport { SendUlnBase } from \"../SendUlnBase.sol\";\n\n/// @dev This is a gluing contract. It simply parses the requests and forward to the super.impl() accordingly.\n/// @dev In this case, it combines the logic of SendUlnBase and SendLibBaseE2\ncontract SendUln302 is SendUlnBase, SendLibBaseE2 {\n    uint32 internal constant CONFIG_TYPE_EXECUTOR = 1;\n    uint32 internal constant CONFIG_TYPE_ULN = 2;\n\n    error LZ_ULN_InvalidConfigType(uint32 configType);\n\n    constructor(\n        address _endpoint,\n        uint256 _treasuryGasLimit,\n        uint256 _treasuryGasForFeeCap\n    ) SendLibBaseE2(_endpoint, _treasuryGasLimit, _treasuryGasForFeeCap) {}\n\n    // ============================ OnlyEndpoint ===================================\n\n    // on the send side the user can config both the executor and the ULN\n    function setConfig(address _oapp, SetConfigParam[] calldata _params) external override onlyEndpoint {\n        for (uint256 i = 0; i < _params.length; i++) {\n            SetConfigParam calldata param = _params[i];\n            _assertSupportedEid(param.eid);\n            if (param.configType == CONFIG_TYPE_EXECUTOR) {\n                _setExecutorConfig(param.eid, _oapp, abi.decode(param.config, (ExecutorConfig)));\n            } else if (param.configType == CONFIG_TYPE_ULN) {\n                _setUlnConfig(param.eid, _oapp, abi.decode(param.config, (UlnConfig)));\n            } else {\n                revert LZ_ULN_InvalidConfigType(param.configType);\n            }\n        }\n    }\n\n    // ============================ View ===================================\n\n    function getConfig(uint32 _eid, address _oapp, uint32 _configType) external view override returns (bytes memory) {\n        if (_configType == CONFIG_TYPE_EXECUTOR) {\n            return abi.encode(getExecutorConfig(_oapp, _eid));\n        } else if (_configType == CONFIG_TYPE_ULN) {\n            return abi.encode(getUlnConfig(_oapp, _eid));\n        } else {\n            revert LZ_ULN_InvalidConfigType(_configType);\n        }\n    }\n\n    function version() external pure override returns (uint64 major, uint8 minor, uint8 endpointVersion) {\n        return (3, 0, 2);\n    }\n\n    function isSupportedEid(uint32 _eid) external view override returns (bool) {\n        return _isSupportedEid(_eid);\n    }\n\n    // ============================ Internal ===================================\n\n    function _quoteVerifier(\n        address _sender,\n        uint32 _dstEid,\n        WorkerOptions[] memory _options\n    ) internal view override returns (uint256) {\n        return _quoteDVNs(_sender, _dstEid, _options);\n    }\n\n    function _payVerifier(\n        Packet calldata _packet,\n        WorkerOptions[] memory _options\n    ) internal override returns (uint256 otherWorkerFees, bytes memory encodedPacket) {\n        (otherWorkerFees, encodedPacket) = _payDVNs(fees, _packet, _options);\n    }\n\n    function _splitOptions(\n        bytes calldata _options\n    ) internal pure override returns (bytes memory, WorkerOptions[] memory) {\n        return _splitUlnOptions(_options);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/UlnBase.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { Ownable } from \"@openzeppelin/contracts/access/Ownable.sol\";\n\n// the formal properties are documented in the setter functions\nstruct UlnConfig {\n    uint64 confirmations;\n    // we store the length of required DVNs and optional DVNs instead of using DVN.length directly to save gas\n    uint8 requiredDVNCount; // 0 indicate DEFAULT, NIL_DVN_COUNT indicate NONE (to override the value of default)\n    uint8 optionalDVNCount; // 0 indicate DEFAULT, NIL_DVN_COUNT indicate NONE (to override the value of default)\n    uint8 optionalDVNThreshold; // (0, optionalDVNCount]\n    address[] requiredDVNs; // no duplicates. sorted an an ascending order. allowed overlap with optionalDVNs\n    address[] optionalDVNs; // no duplicates. sorted an an ascending order. allowed overlap with requiredDVNs\n}\n\nstruct SetDefaultUlnConfigParam {\n    uint32 eid;\n    UlnConfig config;\n}\n\n/// @dev includes the utility functions for checking ULN states and logics\nabstract contract UlnBase is Ownable {\n    address private constant DEFAULT_CONFIG = address(0);\n    // reserved values for\n    uint8 internal constant DEFAULT = 0;\n    uint8 internal constant NIL_DVN_COUNT = type(uint8).max;\n    uint64 internal constant NIL_CONFIRMATIONS = type(uint64).max;\n    // 127 to prevent total number of DVNs (127 * 2) exceeding uint8.max (255)\n    // by limiting the total size, it would help constraint the design of DVNOptions\n    uint8 private constant MAX_COUNT = (type(uint8).max - 1) / 2;\n\n    mapping(address oapp => mapping(uint32 eid => UlnConfig)) internal ulnConfigs;\n\n    error LZ_ULN_Unsorted();\n    error LZ_ULN_InvalidRequiredDVNCount();\n    error LZ_ULN_InvalidOptionalDVNCount();\n    error LZ_ULN_AtLeastOneDVN();\n    error LZ_ULN_InvalidOptionalDVNThreshold();\n    error LZ_ULN_InvalidConfirmations();\n    error LZ_ULN_UnsupportedEid(uint32 eid);\n\n    event DefaultUlnConfigsSet(SetDefaultUlnConfigParam[] params);\n    event UlnConfigSet(address oapp, uint32 eid, UlnConfig config);\n\n    // ============================ OnlyOwner ===================================\n\n    /// @dev about the DEFAULT ULN config\n    /// 1) its values are all LITERAL (e.g. 0 is 0). whereas in the oapp ULN config, 0 (default value) points to the default ULN config\n    ///     this design enables the oapp to point to DEFAULT config without explicitly setting the config\n    /// 2) its configuration is more restrictive than the oapp ULN config that\n    ///     a) it must not use NIL value, where NIL is used only by oapps to indicate the LITERAL 0\n    ///     b) it must have at least one DVN\n    function setDefaultUlnConfigs(SetDefaultUlnConfigParam[] calldata _params) external onlyOwner {\n        for (uint256 i = 0; i < _params.length; ++i) {\n            SetDefaultUlnConfigParam calldata param = _params[i];\n\n            // 2.a must not use NIL\n            if (param.config.requiredDVNCount == NIL_DVN_COUNT) revert LZ_ULN_InvalidRequiredDVNCount();\n            if (param.config.optionalDVNCount == NIL_DVN_COUNT) revert LZ_ULN_InvalidOptionalDVNCount();\n            if (param.config.confirmations == NIL_CONFIRMATIONS) revert LZ_ULN_InvalidConfirmations();\n\n            // 2.b must have at least one dvn\n            _assertAtLeastOneDVN(param.config);\n\n            _setConfig(DEFAULT_CONFIG, param.eid, param.config);\n        }\n        emit DefaultUlnConfigsSet(_params);\n    }\n\n    // ============================ View ===================================\n    // @dev assuming most oapps use default, we get default as memory and custom as storage to save gas\n    function getUlnConfig(address _oapp, uint32 _remoteEid) public view returns (UlnConfig memory rtnConfig) {\n        UlnConfig storage defaultConfig = ulnConfigs[DEFAULT_CONFIG][_remoteEid];\n        UlnConfig storage customConfig = ulnConfigs[_oapp][_remoteEid];\n\n        // if confirmations is 0, use default\n        uint64 confirmations = customConfig.confirmations;\n        if (confirmations == DEFAULT) {\n            rtnConfig.confirmations = defaultConfig.confirmations;\n        } else if (confirmations != NIL_CONFIRMATIONS) {\n            // if confirmations is uint64.max, no block confirmations required\n            rtnConfig.confirmations = confirmations;\n        } // else do nothing, rtnConfig.confirmation is 0\n\n        if (customConfig.requiredDVNCount == DEFAULT) {\n            if (defaultConfig.requiredDVNCount > 0) {\n                // copy only if count > 0. save gas\n                rtnConfig.requiredDVNs = defaultConfig.requiredDVNs;\n                rtnConfig.requiredDVNCount = defaultConfig.requiredDVNCount;\n            } // else, do nothing\n        } else {\n            if (customConfig.requiredDVNCount != NIL_DVN_COUNT) {\n                rtnConfig.requiredDVNs = customConfig.requiredDVNs;\n                rtnConfig.requiredDVNCount = customConfig.requiredDVNCount;\n            } // else, do nothing\n        }\n\n        if (customConfig.optionalDVNCount == DEFAULT) {\n            if (defaultConfig.optionalDVNCount > 0) {\n                // copy only if count > 0. save gas\n                rtnConfig.optionalDVNs = defaultConfig.optionalDVNs;\n                rtnConfig.optionalDVNCount = defaultConfig.optionalDVNCount;\n                rtnConfig.optionalDVNThreshold = defaultConfig.optionalDVNThreshold;\n            }\n        } else {\n            if (customConfig.optionalDVNCount != NIL_DVN_COUNT) {\n                rtnConfig.optionalDVNs = customConfig.optionalDVNs;\n                rtnConfig.optionalDVNCount = customConfig.optionalDVNCount;\n                rtnConfig.optionalDVNThreshold = customConfig.optionalDVNThreshold;\n            }\n        }\n\n        // the final value must have at least one dvn\n        // it is possible that some default config result into 0 dvns\n        _assertAtLeastOneDVN(rtnConfig);\n    }\n\n    /// @dev Get the uln config without the default config for the given remoteEid.\n    function getAppUlnConfig(address _oapp, uint32 _remoteEid) external view returns (UlnConfig memory) {\n        return ulnConfigs[_oapp][_remoteEid];\n    }\n\n    // ============================ Internal ===================================\n    function _setUlnConfig(uint32 _remoteEid, address _oapp, UlnConfig memory _param) internal {\n        _setConfig(_oapp, _remoteEid, _param);\n\n        // get ULN config again as a catch all to ensure the config is valid\n        getUlnConfig(_oapp, _remoteEid);\n        emit UlnConfigSet(_oapp, _remoteEid, _param);\n    }\n\n    /// @dev a supported Eid must have a valid default uln config, which has at least one dvn\n    function _isSupportedEid(uint32 _remoteEid) internal view returns (bool) {\n        UlnConfig storage defaultConfig = ulnConfigs[DEFAULT_CONFIG][_remoteEid];\n        return defaultConfig.requiredDVNCount > 0 || defaultConfig.optionalDVNThreshold > 0;\n    }\n\n    function _assertSupportedEid(uint32 _remoteEid) internal view {\n        if (!_isSupportedEid(_remoteEid)) revert LZ_ULN_UnsupportedEid(_remoteEid);\n    }\n\n    // ============================ Private ===================================\n\n    function _assertAtLeastOneDVN(UlnConfig memory _config) private pure {\n        if (_config.requiredDVNCount == 0 && _config.optionalDVNThreshold == 0) revert LZ_ULN_AtLeastOneDVN();\n    }\n\n    /// @dev this private function is used in both setDefaultUlnConfigs and setUlnConfig\n    function _setConfig(address _oapp, uint32 _eid, UlnConfig memory _param) private {\n        // @dev required dvns\n        // if dvnCount == NONE, dvns list must be empty\n        // if dvnCount == DEFAULT, dvn list must be empty\n        // otherwise, dvnList.length == dvnCount and assert the list is valid\n        if (_param.requiredDVNCount == NIL_DVN_COUNT || _param.requiredDVNCount == DEFAULT) {\n            if (_param.requiredDVNs.length != 0) revert LZ_ULN_InvalidRequiredDVNCount();\n        } else {\n            if (_param.requiredDVNs.length != _param.requiredDVNCount || _param.requiredDVNCount > MAX_COUNT)\n                revert LZ_ULN_InvalidRequiredDVNCount();\n            _assertNoDuplicates(_param.requiredDVNs);\n        }\n\n        // @dev optional dvns\n        // if optionalDVNCount == NONE, optionalDVNs list must be empty and threshold must be 0\n        // if optionalDVNCount == DEFAULT, optionalDVNs list must be empty and threshold must be 0\n        // otherwise, optionalDVNs.length == optionalDVNCount, threshold > 0 && threshold <= optionalDVNCount and assert the list is valid\n\n        // example use case: an oapp uses the DEFAULT 'required' but\n        //     a) use a custom 1/1 dvn (practically a required dvn), or\n        //     b) use a custom 2/3 dvn\n        if (_param.optionalDVNCount == NIL_DVN_COUNT || _param.optionalDVNCount == DEFAULT) {\n            if (_param.optionalDVNs.length != 0) revert LZ_ULN_InvalidOptionalDVNCount();\n            if (_param.optionalDVNThreshold != 0) revert LZ_ULN_InvalidOptionalDVNThreshold();\n        } else {\n            if (_param.optionalDVNs.length != _param.optionalDVNCount || _param.optionalDVNCount > MAX_COUNT)\n                revert LZ_ULN_InvalidOptionalDVNCount();\n            if (_param.optionalDVNThreshold == 0 || _param.optionalDVNThreshold > _param.optionalDVNCount)\n                revert LZ_ULN_InvalidOptionalDVNThreshold();\n            _assertNoDuplicates(_param.optionalDVNs);\n        }\n        // don't assert valid count here, as it needs to be validated along side default config\n\n        ulnConfigs[_oapp][_eid] = _param;\n    }\n\n    function _assertNoDuplicates(address[] memory _dvns) private pure {\n        address lastDVN = address(0);\n        for (uint256 i = 0; i < _dvns.length; i++) {\n            address dvn = _dvns[i];\n            if (dvn <= lastDVN) revert LZ_ULN_Unsorted(); // to ensure no duplicates\n            lastDVN = dvn;\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { IMessageLibManager } from \"./IMessageLibManager.sol\";\nimport { IMessagingComposer } from \"./IMessagingComposer.sol\";\nimport { IMessagingChannel } from \"./IMessagingChannel.sol\";\nimport { IMessagingContext } from \"./IMessagingContext.sol\";\n\nstruct MessagingParams {\n    uint32 dstEid;\n    bytes32 receiver;\n    bytes message;\n    bytes options;\n    bool payInLzToken;\n}\n\nstruct MessagingReceipt {\n    bytes32 guid;\n    uint64 nonce;\n    MessagingFee fee;\n}\n\nstruct MessagingFee {\n    uint256 nativeFee;\n    uint256 lzTokenFee;\n}\n\nstruct Origin {\n    uint32 srcEid;\n    bytes32 sender;\n    uint64 nonce;\n}\n\ninterface ILayerZeroEndpointV2 is IMessageLibManager, IMessagingComposer, IMessagingChannel, IMessagingContext {\n    event PacketSent(bytes encodedPayload, bytes options, address sendLibrary);\n\n    event PacketVerified(Origin origin, address receiver, bytes32 payloadHash);\n\n    event PacketDelivered(Origin origin, address receiver);\n\n    event LzReceiveAlert(\n        address indexed receiver,\n        address indexed executor,\n        Origin origin,\n        bytes32 guid,\n        uint256 gas,\n        uint256 value,\n        bytes message,\n        bytes extraData,\n        bytes reason\n    );\n\n    event LzTokenSet(address token);\n\n    event DelegateSet(address sender, address delegate);\n\n    function quote(MessagingParams calldata _params, address _sender) external view returns (MessagingFee memory);\n\n    function send(\n        MessagingParams calldata _params,\n        address _refundAddress\n    ) external payable returns (MessagingReceipt memory);\n\n    function verify(Origin calldata _origin, address _receiver, bytes32 _payloadHash) external;\n\n    function verifiable(Origin calldata _origin, address _receiver) external view returns (bool);\n\n    function initializable(Origin calldata _origin, address _receiver) external view returns (bool);\n\n    function lzReceive(\n        Origin calldata _origin,\n        address _receiver,\n        bytes32 _guid,\n        bytes calldata _message,\n        bytes calldata _extraData\n    ) external payable;\n\n    // oapp can burn messages partially by calling this function with its own business logic if messages are verified in order\n    function clear(address _oapp, Origin calldata _origin, bytes32 _guid, bytes calldata _message) external;\n\n    function setLzToken(address _lzToken) external;\n\n    function lzToken() external view returns (address);\n\n    function nativeToken() external view returns (address);\n\n    function setDelegate(address _delegate) external;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLib.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { IERC165 } from \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\n\nimport { SetConfigParam } from \"./IMessageLibManager.sol\";\n\nenum MessageLibType {\n    Send,\n    Receive,\n    SendAndReceive\n}\n\ninterface IMessageLib is IERC165 {\n    function setConfig(address _oapp, SetConfigParam[] calldata _config) external;\n\n    function getConfig(uint32 _eid, address _oapp, uint32 _configType) external view returns (bytes memory config);\n\n    function isSupportedEid(uint32 _eid) external view returns (bool);\n\n    // message libs of same major version are compatible\n    function version() external view returns (uint64 major, uint8 minor, uint8 endpointVersion);\n\n    function messageLibType() external view returns (MessageLibType);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLibManager.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nstruct SetConfigParam {\n    uint32 eid;\n    uint32 configType;\n    bytes config;\n}\n\ninterface IMessageLibManager {\n    struct Timeout {\n        address lib;\n        uint256 expiry;\n    }\n\n    event LibraryRegistered(address newLib);\n    event DefaultSendLibrarySet(uint32 eid, address newLib);\n    event DefaultReceiveLibrarySet(uint32 eid, address newLib);\n    event DefaultReceiveLibraryTimeoutSet(uint32 eid, address oldLib, uint256 expiry);\n    event SendLibrarySet(address sender, uint32 eid, address newLib);\n    event ReceiveLibrarySet(address receiver, uint32 eid, address newLib);\n    event ReceiveLibraryTimeoutSet(address receiver, uint32 eid, address oldLib, uint256 timeout);\n\n    function registerLibrary(address _lib) external;\n\n    function isRegisteredLibrary(address _lib) external view returns (bool);\n\n    function getRegisteredLibraries() external view returns (address[] memory);\n\n    function setDefaultSendLibrary(uint32 _eid, address _newLib) external;\n\n    function defaultSendLibrary(uint32 _eid) external view returns (address);\n\n    function setDefaultReceiveLibrary(uint32 _eid, address _newLib, uint256 _timeout) external;\n\n    function defaultReceiveLibrary(uint32 _eid) external view returns (address);\n\n    function setDefaultReceiveLibraryTimeout(uint32 _eid, address _lib, uint256 _expiry) external;\n\n    function defaultReceiveLibraryTimeout(uint32 _eid) external view returns (address lib, uint256 expiry);\n\n    function isSupportedEid(uint32 _eid) external view returns (bool);\n\n    function isValidReceiveLibrary(address _receiver, uint32 _eid, address _lib) external view returns (bool);\n\n    /// ------------------- OApp interfaces -------------------\n    function setSendLibrary(address _oapp, uint32 _eid, address _newLib) external;\n\n    function getSendLibrary(address _sender, uint32 _eid) external view returns (address lib);\n\n    function isDefaultSendLibrary(address _sender, uint32 _eid) external view returns (bool);\n\n    function setReceiveLibrary(address _oapp, uint32 _eid, address _newLib, uint256 _gracePeriod) external;\n\n    function getReceiveLibrary(address _receiver, uint32 _eid) external view returns (address lib, bool isDefault);\n\n    function setReceiveLibraryTimeout(address _oapp, uint32 _eid, address _lib, uint256 _gracePeriod) external;\n\n    function receiveLibraryTimeout(address _receiver, uint32 _eid) external view returns (address lib, uint256 expiry);\n\n    function setConfig(address _oapp, address _lib, SetConfigParam[] calldata _params) external;\n\n    function getConfig(\n        address _oapp,\n        address _lib,\n        uint32 _eid,\n        uint32 _configType\n    ) external view returns (bytes memory config);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingChannel.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface IMessagingChannel {\n    event InboundNonceSkipped(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce);\n    event PacketNilified(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);\n    event PacketBurnt(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);\n\n    function eid() external view returns (uint32);\n\n    // this is an emergency function if a message cannot be verified for some reasons\n    // required to provide _nextNonce to avoid race condition\n    function skip(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce) external;\n\n    function nilify(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;\n\n    function burn(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;\n\n    function nextGuid(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (bytes32);\n\n    function inboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);\n\n    function outboundNonce(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (uint64);\n\n    function inboundPayloadHash(\n        address _receiver,\n        uint32 _srcEid,\n        bytes32 _sender,\n        uint64 _nonce\n    ) external view returns (bytes32);\n\n    function lazyInboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingComposer.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface IMessagingComposer {\n    event ComposeSent(address from, address to, bytes32 guid, uint16 index, bytes message);\n    event ComposeDelivered(address from, address to, bytes32 guid, uint16 index);\n    event LzComposeAlert(\n        address indexed from,\n        address indexed to,\n        address indexed executor,\n        bytes32 guid,\n        uint16 index,\n        uint256 gas,\n        uint256 value,\n        bytes message,\n        bytes extraData,\n        bytes reason\n    );\n\n    function composeQueue(\n        address _from,\n        address _to,\n        bytes32 _guid,\n        uint16 _index\n    ) external view returns (bytes32 messageHash);\n\n    function sendCompose(address _to, bytes32 _guid, uint16 _index, bytes calldata _message) external;\n\n    function lzCompose(\n        address _from,\n        address _to,\n        bytes32 _guid,\n        uint16 _index,\n        bytes calldata _message,\n        bytes calldata _extraData\n    ) external payable;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingContext.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface IMessagingContext {\n    function isSendingMessage() external view returns (bool);\n\n    function getSendContext() external view returns (uint32 dstEid, address sender);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ISendLib.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { MessagingFee } from \"./ILayerZeroEndpointV2.sol\";\nimport { IMessageLib } from \"./IMessageLib.sol\";\n\nstruct Packet {\n    uint64 nonce;\n    uint32 srcEid;\n    address sender;\n    uint32 dstEid;\n    bytes32 receiver;\n    bytes32 guid;\n    bytes message;\n}\n\ninterface ISendLib is IMessageLib {\n    function send(\n        Packet calldata _packet,\n        bytes calldata _options,\n        bool _payInLzToken\n    ) external returns (MessagingFee memory, bytes memory encodedPacket);\n\n    function quote(\n        Packet calldata _packet,\n        bytes calldata _options,\n        bool _payInLzToken\n    ) external view returns (MessagingFee memory);\n\n    function setTreasury(address _treasury) external;\n\n    function withdrawFee(address _to, uint256 _amount) external;\n\n    function withdrawLzTokenFee(address _lzToken, address _to, uint256 _amount) external;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/AddressCast.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nlibrary AddressCast {\n    error AddressCast_InvalidSizeForAddress();\n    error AddressCast_InvalidAddress();\n\n    function toBytes32(bytes calldata _addressBytes) internal pure returns (bytes32 result) {\n        if (_addressBytes.length > 32) revert AddressCast_InvalidAddress();\n        result = bytes32(_addressBytes);\n        unchecked {\n            uint256 offset = 32 - _addressBytes.length;\n            result = result >> (offset * 8);\n        }\n    }\n\n    function toBytes32(address _address) internal pure returns (bytes32 result) {\n        result = bytes32(uint256(uint160(_address)));\n    }\n\n    function toBytes(bytes32 _addressBytes32, uint256 _size) internal pure returns (bytes memory result) {\n        if (_size == 0 || _size > 32) revert AddressCast_InvalidSizeForAddress();\n        result = new bytes(_size);\n        unchecked {\n            uint256 offset = 256 - _size * 8;\n            assembly {\n                mstore(add(result, 32), shl(offset, _addressBytes32))\n            }\n        }\n    }\n\n    function toAddress(bytes32 _addressBytes32) internal pure returns (address result) {\n        result = address(uint160(uint256(_addressBytes32)));\n    }\n\n    function toAddress(bytes calldata _addressBytes) internal pure returns (address result) {\n        if (_addressBytes.length != 20) revert AddressCast_InvalidAddress();\n        result = address(bytes20(_addressBytes));\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/CalldataBytesLib.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nlibrary CalldataBytesLib {\n    function toU8(bytes calldata _bytes, uint256 _start) internal pure returns (uint8) {\n        return uint8(_bytes[_start]);\n    }\n\n    function toU16(bytes calldata _bytes, uint256 _start) internal pure returns (uint16) {\n        unchecked {\n            uint256 end = _start + 2;\n            return uint16(bytes2(_bytes[_start:end]));\n        }\n    }\n\n    function toU32(bytes calldata _bytes, uint256 _start) internal pure returns (uint32) {\n        unchecked {\n            uint256 end = _start + 4;\n            return uint32(bytes4(_bytes[_start:end]));\n        }\n    }\n\n    function toU64(bytes calldata _bytes, uint256 _start) internal pure returns (uint64) {\n        unchecked {\n            uint256 end = _start + 8;\n            return uint64(bytes8(_bytes[_start:end]));\n        }\n    }\n\n    function toU128(bytes calldata _bytes, uint256 _start) internal pure returns (uint128) {\n        unchecked {\n            uint256 end = _start + 16;\n            return uint128(bytes16(_bytes[_start:end]));\n        }\n    }\n\n    function toU256(bytes calldata _bytes, uint256 _start) internal pure returns (uint256) {\n        unchecked {\n            uint256 end = _start + 32;\n            return uint256(bytes32(_bytes[_start:end]));\n        }\n    }\n\n    function toAddr(bytes calldata _bytes, uint256 _start) internal pure returns (address) {\n        unchecked {\n            uint256 end = _start + 20;\n            return address(bytes20(_bytes[_start:end]));\n        }\n    }\n\n    function toB32(bytes calldata _bytes, uint256 _start) internal pure returns (bytes32) {\n        unchecked {\n            uint256 end = _start + 32;\n            return bytes32(_bytes[_start:end]);\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/Transfer.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { SafeERC20 } from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport { IERC20 } from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\nlibrary Transfer {\n    using SafeERC20 for IERC20;\n\n    address internal constant ADDRESS_ZERO = address(0);\n\n    error Transfer_NativeFailed(address _to, uint256 _value);\n    error Transfer_ToAddressIsZero();\n\n    function native(address _to, uint256 _value) internal {\n        if (_to == ADDRESS_ZERO) revert Transfer_ToAddressIsZero();\n        (bool success, ) = _to.call{ value: _value }(\"\");\n        if (!success) revert Transfer_NativeFailed(_to, _value);\n    }\n\n    function token(address _token, address _to, uint256 _value) internal {\n        if (_to == ADDRESS_ZERO) revert Transfer_ToAddressIsZero();\n        IERC20(_token).safeTransfer(_to, _value);\n    }\n\n    function nativeOrToken(address _token, address _to, uint256 _value) internal {\n        if (_token == ADDRESS_ZERO) {\n            native(_to, _value);\n        } else {\n            token(_token, _to, _value);\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/BitMaps.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\n// modified from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/structs/BitMaps.sol\npragma solidity ^0.8.20;\n\ntype BitMap256 is uint256;\n\nusing BitMaps for BitMap256 global;\n\nlibrary BitMaps {\n    /**\n     * @dev Returns whether the bit at `index` is set.\n     */\n    function get(BitMap256 bitmap, uint8 index) internal pure returns (bool) {\n        uint256 mask = 1 << index;\n        return BitMap256.unwrap(bitmap) & mask != 0;\n    }\n\n    /**\n     * @dev Sets the bit at `index`.\n     */\n    function set(BitMap256 bitmap, uint8 index) internal pure returns (BitMap256) {\n        uint256 mask = 1 << index;\n        return BitMap256.wrap(BitMap256.unwrap(bitmap) | mask);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/ExecutorOptions.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { CalldataBytesLib } from \"../../libs/CalldataBytesLib.sol\";\n\nlibrary ExecutorOptions {\n    using CalldataBytesLib for bytes;\n\n    uint8 internal constant WORKER_ID = 1;\n\n    uint8 internal constant OPTION_TYPE_LZRECEIVE = 1;\n    uint8 internal constant OPTION_TYPE_NATIVE_DROP = 2;\n    uint8 internal constant OPTION_TYPE_LZCOMPOSE = 3;\n    uint8 internal constant OPTION_TYPE_ORDERED_EXECUTION = 4;\n\n    error Executor_InvalidLzReceiveOption();\n    error Executor_InvalidNativeDropOption();\n    error Executor_InvalidLzComposeOption();\n\n    /// @dev decode the next executor option from the options starting from the specified cursor\n    /// @param _options [executor_id][executor_option][executor_id][executor_option]...\n    ///        executor_option = [option_size][option_type][option]\n    ///        option_size = len(option_type) + len(option)\n    ///        executor_id: uint8, option_size: uint16, option_type: uint8, option: bytes\n    /// @param _cursor the cursor to start decoding from\n    /// @return optionType the type of the option\n    /// @return option the option of the executor\n    /// @return cursor the cursor to start decoding the next executor option\n    function nextExecutorOption(\n        bytes calldata _options,\n        uint256 _cursor\n    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {\n        unchecked {\n            // skip worker id\n            cursor = _cursor + 1;\n\n            // read option size\n            uint16 size = _options.toU16(cursor);\n            cursor += 2;\n\n            // read option type\n            optionType = _options.toU8(cursor);\n\n            // startCursor and endCursor are used to slice the option from _options\n            uint256 startCursor = cursor + 1; // skip option type\n            uint256 endCursor = cursor + size;\n            option = _options[startCursor:endCursor];\n            cursor += size;\n        }\n    }\n\n    function decodeLzReceiveOption(bytes calldata _option) internal pure returns (uint128 gas, uint128 value) {\n        if (_option.length != 16 && _option.length != 32) revert Executor_InvalidLzReceiveOption();\n        gas = _option.toU128(0);\n        value = _option.length == 32 ? _option.toU128(16) : 0;\n    }\n\n    function decodeNativeDropOption(bytes calldata _option) internal pure returns (uint128 amount, bytes32 receiver) {\n        if (_option.length != 48) revert Executor_InvalidNativeDropOption();\n        amount = _option.toU128(0);\n        receiver = _option.toB32(16);\n    }\n\n    function decodeLzComposeOption(\n        bytes calldata _option\n    ) internal pure returns (uint16 index, uint128 gas, uint128 value) {\n        if (_option.length != 18 && _option.length != 34) revert Executor_InvalidLzComposeOption();\n        index = _option.toU16(0);\n        gas = _option.toU128(2);\n        value = _option.length == 34 ? _option.toU128(18) : 0;\n    }\n\n    function encodeLzReceiveOption(uint128 _gas, uint128 _value) internal pure returns (bytes memory) {\n        return _value == 0 ? abi.encodePacked(_gas) : abi.encodePacked(_gas, _value);\n    }\n\n    function encodeNativeDropOption(uint128 _amount, bytes32 _receiver) internal pure returns (bytes memory) {\n        return abi.encodePacked(_amount, _receiver);\n    }\n\n    function encodeLzComposeOption(uint16 _index, uint128 _gas, uint128 _value) internal pure returns (bytes memory) {\n        return _value == 0 ? abi.encodePacked(_index, _gas) : abi.encodePacked(_index, _gas, _value);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/PacketV1Codec.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.20;\n\nimport { Packet } from \"../../interfaces/ISendLib.sol\";\nimport { AddressCast } from \"../../libs/AddressCast.sol\";\n\nlibrary PacketV1Codec {\n    using AddressCast for address;\n    using AddressCast for bytes32;\n\n    uint8 internal constant PACKET_VERSION = 1;\n\n    // header (version + nonce + path)\n    // version\n    uint256 private constant PACKET_VERSION_OFFSET = 0;\n    //    nonce\n    uint256 private constant NONCE_OFFSET = 1;\n    //    path\n    uint256 private constant SRC_EID_OFFSET = 9;\n    uint256 private constant SENDER_OFFSET = 13;\n    uint256 private constant DST_EID_OFFSET = 45;\n    uint256 private constant RECEIVER_OFFSET = 49;\n    // payload (guid + message)\n    uint256 private constant GUID_OFFSET = 81; // keccak256(nonce + path)\n    uint256 private constant MESSAGE_OFFSET = 113;\n\n    function encode(Packet memory _packet) internal pure returns (bytes memory encodedPacket) {\n        encodedPacket = abi.encodePacked(\n            PACKET_VERSION,\n            _packet.nonce,\n            _packet.srcEid,\n            _packet.sender.toBytes32(),\n            _packet.dstEid,\n            _packet.receiver,\n            _packet.guid,\n            _packet.message\n        );\n    }\n\n    function encodePacketHeader(Packet memory _packet) internal pure returns (bytes memory) {\n        return\n            abi.encodePacked(\n                PACKET_VERSION,\n                _packet.nonce,\n                _packet.srcEid,\n                _packet.sender.toBytes32(),\n                _packet.dstEid,\n                _packet.receiver\n            );\n    }\n\n    function encodePayload(Packet memory _packet) internal pure returns (bytes memory) {\n        return abi.encodePacked(_packet.guid, _packet.message);\n    }\n\n    function header(bytes calldata _packet) internal pure returns (bytes calldata) {\n        return _packet[0:GUID_OFFSET];\n    }\n\n    function version(bytes calldata _packet) internal pure returns (uint8) {\n        return uint8(bytes1(_packet[PACKET_VERSION_OFFSET:NONCE_OFFSET]));\n    }\n\n    function nonce(bytes calldata _packet) internal pure returns (uint64) {\n        return uint64(bytes8(_packet[NONCE_OFFSET:SRC_EID_OFFSET]));\n    }\n\n    function srcEid(bytes calldata _packet) internal pure returns (uint32) {\n        return uint32(bytes4(_packet[SRC_EID_OFFSET:SENDER_OFFSET]));\n    }\n\n    function sender(bytes calldata _packet) internal pure returns (bytes32) {\n        return bytes32(_packet[SENDER_OFFSET:DST_EID_OFFSET]);\n    }\n\n    function senderAddressB20(bytes calldata _packet) internal pure returns (address) {\n        return sender(_packet).toAddress();\n    }\n\n    function dstEid(bytes calldata _packet) internal pure returns (uint32) {\n        return uint32(bytes4(_packet[DST_EID_OFFSET:RECEIVER_OFFSET]));\n    }\n\n    function receiver(bytes calldata _packet) internal pure returns (bytes32) {\n        return bytes32(_packet[RECEIVER_OFFSET:GUID_OFFSET]);\n    }\n\n    function receiverB20(bytes calldata _packet) internal pure returns (address) {\n        return receiver(_packet).toAddress();\n    }\n\n    function guid(bytes calldata _packet) internal pure returns (bytes32) {\n        return bytes32(_packet[GUID_OFFSET:MESSAGE_OFFSET]);\n    }\n\n    function message(bytes calldata _packet) internal pure returns (bytes calldata) {\n        return bytes(_packet[MESSAGE_OFFSET:]);\n    }\n\n    function payload(bytes calldata _packet) internal pure returns (bytes calldata) {\n        return bytes(_packet[GUID_OFFSET:]);\n    }\n\n    function payloadHash(bytes calldata _packet) internal pure returns (bytes32) {\n        return keccak256(payload(_packet));\n    }\n}\n"
      },
      "@openzeppelin/contracts/access/Ownable.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby disabling any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n *\n * ==== Security Considerations\n *\n * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature\n * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be\n * considered as an intention to spend the allowance in any specific way. The second is that because permits have\n * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should\n * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be\n * generally recommended is:\n *\n * ```solidity\n * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {\n *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}\n *     doThing(..., value);\n * }\n *\n * function doThing(..., uint256 value) public {\n *     token.safeTransferFrom(msg.sender, address(this), value);\n *     ...\n * }\n * ```\n *\n * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of\n * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also\n * {SafeERC20-safeTransferFrom}).\n *\n * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so\n * contracts should have entry points that don't rely on permit.\n */\ninterface IERC20Permit {\n    /**\n     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n     * given ``owner``'s signed approval.\n     *\n     * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n     * ordering also apply here.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `deadline` must be a timestamp in the future.\n     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n     * over the EIP712-formatted function arguments.\n     * - the signature must use ``owner``'s current nonce (see {nonces}).\n     *\n     * For more information on the signature format, see the\n     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n     * section].\n     *\n     * CAUTION: See Security Considerations above.\n     */\n    function permit(\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) external;\n\n    /**\n     * @dev Returns the current nonce for `owner`. This value must be\n     * included whenever a signature is generated for {permit}.\n     *\n     * Every successful call to {permit} increases ``owner``'s nonce by one. This\n     * prevents a signature from being used multiple times.\n     */\n    function nonces(address owner) external view returns (uint256);\n\n    /**\n     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address from, address to, uint256 amount) external returns (bool);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../extensions/IERC20Permit.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    /**\n     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeTransfer(IERC20 token, address to, uint256 value) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    /**\n     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the\n     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.\n     */\n    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(IERC20 token, address spender, uint256 value) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    /**\n     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n        uint256 oldAllowance = token.allowance(address(this), spender);\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));\n    }\n\n    /**\n     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));\n        }\n    }\n\n    /**\n     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval\n     * to be set to zero before setting it to a non-zero value, such as USDT.\n     */\n    function forceApprove(IERC20 token, address spender, uint256 value) internal {\n        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);\n\n        if (!_callOptionalReturnBool(token, approvalCall)) {\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));\n            _callOptionalReturn(token, approvalCall);\n        }\n    }\n\n    /**\n     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.\n     * Revert on invalid signature.\n     */\n    function safePermit(\n        IERC20Permit token,\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal {\n        uint256 nonceBefore = token.nonces(owner);\n        token.permit(owner, spender, value, deadline, v, r, s);\n        uint256 nonceAfter = token.nonces(owner);\n        require(nonceAfter == nonceBefore + 1, \"SafeERC20: permit did not succeed\");\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        require(returndata.length == 0 || abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     *\n     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.\n     */\n    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false\n        // and not revert is the subcall reverts.\n\n        (bool success, bytes memory returndata) = address(token).call(data);\n        return\n            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Address.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     *\n     * Furthermore, `isContract` will also return true if the target contract within\n     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n     * which only has an effect at the end of a transaction.\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n     *\n     * _Available since v4.8._\n     */\n    function verifyCallResultFromTarget(\n        address target,\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        if (success) {\n            if (returndata.length == 0) {\n                // only check isContract if the call was successful and the return data is empty\n                // otherwise we already know that it was a contract\n                require(isContract(target), \"Address: call to non-contract\");\n            }\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    /**\n     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason or using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    function _revert(bytes memory returndata, string memory errorMessage) private pure {\n        // Look for revert reason and bubble it up if present\n        if (returndata.length > 0) {\n            // The easiest way to bubble the revert reason is using memory via assembly\n            /// @solidity memory-safe-assembly\n            assembly {\n                let returndata_size := mload(returndata)\n                revert(add(32, returndata), returndata_size)\n            }\n        } else {\n            revert(errorMessage);\n        }\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Context.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n\n    function _contextSuffixLength() internal view virtual returns (uint256) {\n        return 0;\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/introspection/ERC165.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165).interfaceId;\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
      },
      "@openzeppelin/contracts/utils/math/SafeCast.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)\n// This file was procedurally generated from scripts/generate/templates/SafeCast.js.\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow\n * checks.\n *\n * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can\n * easily result in undesired exploitation or bugs, since developers usually\n * assume that overflows raise errors. `SafeCast` restores this intuition by\n * reverting the transaction when such an operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n *\n * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing\n * all math on `uint256` and `int256` and then downcasting.\n */\nlibrary SafeCast {\n    /**\n     * @dev Returns the downcasted uint248 from uint256, reverting on\n     * overflow (when the input is greater than largest uint248).\n     *\n     * Counterpart to Solidity's `uint248` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 248 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint248(uint256 value) internal pure returns (uint248) {\n        require(value <= type(uint248).max, \"SafeCast: value doesn't fit in 248 bits\");\n        return uint248(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint240 from uint256, reverting on\n     * overflow (when the input is greater than largest uint240).\n     *\n     * Counterpart to Solidity's `uint240` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 240 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint240(uint256 value) internal pure returns (uint240) {\n        require(value <= type(uint240).max, \"SafeCast: value doesn't fit in 240 bits\");\n        return uint240(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint232 from uint256, reverting on\n     * overflow (when the input is greater than largest uint232).\n     *\n     * Counterpart to Solidity's `uint232` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 232 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint232(uint256 value) internal pure returns (uint232) {\n        require(value <= type(uint232).max, \"SafeCast: value doesn't fit in 232 bits\");\n        return uint232(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint224 from uint256, reverting on\n     * overflow (when the input is greater than largest uint224).\n     *\n     * Counterpart to Solidity's `uint224` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 224 bits\n     *\n     * _Available since v4.2._\n     */\n    function toUint224(uint256 value) internal pure returns (uint224) {\n        require(value <= type(uint224).max, \"SafeCast: value doesn't fit in 224 bits\");\n        return uint224(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint216 from uint256, reverting on\n     * overflow (when the input is greater than largest uint216).\n     *\n     * Counterpart to Solidity's `uint216` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 216 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint216(uint256 value) internal pure returns (uint216) {\n        require(value <= type(uint216).max, \"SafeCast: value doesn't fit in 216 bits\");\n        return uint216(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint208 from uint256, reverting on\n     * overflow (when the input is greater than largest uint208).\n     *\n     * Counterpart to Solidity's `uint208` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 208 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint208(uint256 value) internal pure returns (uint208) {\n        require(value <= type(uint208).max, \"SafeCast: value doesn't fit in 208 bits\");\n        return uint208(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint200 from uint256, reverting on\n     * overflow (when the input is greater than largest uint200).\n     *\n     * Counterpart to Solidity's `uint200` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 200 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint200(uint256 value) internal pure returns (uint200) {\n        require(value <= type(uint200).max, \"SafeCast: value doesn't fit in 200 bits\");\n        return uint200(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint192 from uint256, reverting on\n     * overflow (when the input is greater than largest uint192).\n     *\n     * Counterpart to Solidity's `uint192` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 192 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint192(uint256 value) internal pure returns (uint192) {\n        require(value <= type(uint192).max, \"SafeCast: value doesn't fit in 192 bits\");\n        return uint192(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint184 from uint256, reverting on\n     * overflow (when the input is greater than largest uint184).\n     *\n     * Counterpart to Solidity's `uint184` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 184 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint184(uint256 value) internal pure returns (uint184) {\n        require(value <= type(uint184).max, \"SafeCast: value doesn't fit in 184 bits\");\n        return uint184(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint176 from uint256, reverting on\n     * overflow (when the input is greater than largest uint176).\n     *\n     * Counterpart to Solidity's `uint176` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 176 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint176(uint256 value) internal pure returns (uint176) {\n        require(value <= type(uint176).max, \"SafeCast: value doesn't fit in 176 bits\");\n        return uint176(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint168 from uint256, reverting on\n     * overflow (when the input is greater than largest uint168).\n     *\n     * Counterpart to Solidity's `uint168` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 168 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint168(uint256 value) internal pure returns (uint168) {\n        require(value <= type(uint168).max, \"SafeCast: value doesn't fit in 168 bits\");\n        return uint168(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint160 from uint256, reverting on\n     * overflow (when the input is greater than largest uint160).\n     *\n     * Counterpart to Solidity's `uint160` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 160 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint160(uint256 value) internal pure returns (uint160) {\n        require(value <= type(uint160).max, \"SafeCast: value doesn't fit in 160 bits\");\n        return uint160(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint152 from uint256, reverting on\n     * overflow (when the input is greater than largest uint152).\n     *\n     * Counterpart to Solidity's `uint152` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 152 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint152(uint256 value) internal pure returns (uint152) {\n        require(value <= type(uint152).max, \"SafeCast: value doesn't fit in 152 bits\");\n        return uint152(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint144 from uint256, reverting on\n     * overflow (when the input is greater than largest uint144).\n     *\n     * Counterpart to Solidity's `uint144` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 144 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint144(uint256 value) internal pure returns (uint144) {\n        require(value <= type(uint144).max, \"SafeCast: value doesn't fit in 144 bits\");\n        return uint144(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint136 from uint256, reverting on\n     * overflow (when the input is greater than largest uint136).\n     *\n     * Counterpart to Solidity's `uint136` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 136 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint136(uint256 value) internal pure returns (uint136) {\n        require(value <= type(uint136).max, \"SafeCast: value doesn't fit in 136 bits\");\n        return uint136(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint128 from uint256, reverting on\n     * overflow (when the input is greater than largest uint128).\n     *\n     * Counterpart to Solidity's `uint128` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 128 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint128(uint256 value) internal pure returns (uint128) {\n        require(value <= type(uint128).max, \"SafeCast: value doesn't fit in 128 bits\");\n        return uint128(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint120 from uint256, reverting on\n     * overflow (when the input is greater than largest uint120).\n     *\n     * Counterpart to Solidity's `uint120` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 120 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint120(uint256 value) internal pure returns (uint120) {\n        require(value <= type(uint120).max, \"SafeCast: value doesn't fit in 120 bits\");\n        return uint120(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint112 from uint256, reverting on\n     * overflow (when the input is greater than largest uint112).\n     *\n     * Counterpart to Solidity's `uint112` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 112 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint112(uint256 value) internal pure returns (uint112) {\n        require(value <= type(uint112).max, \"SafeCast: value doesn't fit in 112 bits\");\n        return uint112(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint104 from uint256, reverting on\n     * overflow (when the input is greater than largest uint104).\n     *\n     * Counterpart to Solidity's `uint104` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 104 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint104(uint256 value) internal pure returns (uint104) {\n        require(value <= type(uint104).max, \"SafeCast: value doesn't fit in 104 bits\");\n        return uint104(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint96 from uint256, reverting on\n     * overflow (when the input is greater than largest uint96).\n     *\n     * Counterpart to Solidity's `uint96` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 96 bits\n     *\n     * _Available since v4.2._\n     */\n    function toUint96(uint256 value) internal pure returns (uint96) {\n        require(value <= type(uint96).max, \"SafeCast: value doesn't fit in 96 bits\");\n        return uint96(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint88 from uint256, reverting on\n     * overflow (when the input is greater than largest uint88).\n     *\n     * Counterpart to Solidity's `uint88` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 88 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint88(uint256 value) internal pure returns (uint88) {\n        require(value <= type(uint88).max, \"SafeCast: value doesn't fit in 88 bits\");\n        return uint88(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint80 from uint256, reverting on\n     * overflow (when the input is greater than largest uint80).\n     *\n     * Counterpart to Solidity's `uint80` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 80 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint80(uint256 value) internal pure returns (uint80) {\n        require(value <= type(uint80).max, \"SafeCast: value doesn't fit in 80 bits\");\n        return uint80(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint72 from uint256, reverting on\n     * overflow (when the input is greater than largest uint72).\n     *\n     * Counterpart to Solidity's `uint72` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 72 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint72(uint256 value) internal pure returns (uint72) {\n        require(value <= type(uint72).max, \"SafeCast: value doesn't fit in 72 bits\");\n        return uint72(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint64 from uint256, reverting on\n     * overflow (when the input is greater than largest uint64).\n     *\n     * Counterpart to Solidity's `uint64` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 64 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint64(uint256 value) internal pure returns (uint64) {\n        require(value <= type(uint64).max, \"SafeCast: value doesn't fit in 64 bits\");\n        return uint64(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint56 from uint256, reverting on\n     * overflow (when the input is greater than largest uint56).\n     *\n     * Counterpart to Solidity's `uint56` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 56 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint56(uint256 value) internal pure returns (uint56) {\n        require(value <= type(uint56).max, \"SafeCast: value doesn't fit in 56 bits\");\n        return uint56(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint48 from uint256, reverting on\n     * overflow (when the input is greater than largest uint48).\n     *\n     * Counterpart to Solidity's `uint48` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 48 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint48(uint256 value) internal pure returns (uint48) {\n        require(value <= type(uint48).max, \"SafeCast: value doesn't fit in 48 bits\");\n        return uint48(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint40 from uint256, reverting on\n     * overflow (when the input is greater than largest uint40).\n     *\n     * Counterpart to Solidity's `uint40` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 40 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint40(uint256 value) internal pure returns (uint40) {\n        require(value <= type(uint40).max, \"SafeCast: value doesn't fit in 40 bits\");\n        return uint40(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint32 from uint256, reverting on\n     * overflow (when the input is greater than largest uint32).\n     *\n     * Counterpart to Solidity's `uint32` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 32 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint32(uint256 value) internal pure returns (uint32) {\n        require(value <= type(uint32).max, \"SafeCast: value doesn't fit in 32 bits\");\n        return uint32(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint24 from uint256, reverting on\n     * overflow (when the input is greater than largest uint24).\n     *\n     * Counterpart to Solidity's `uint24` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 24 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint24(uint256 value) internal pure returns (uint24) {\n        require(value <= type(uint24).max, \"SafeCast: value doesn't fit in 24 bits\");\n        return uint24(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint16 from uint256, reverting on\n     * overflow (when the input is greater than largest uint16).\n     *\n     * Counterpart to Solidity's `uint16` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 16 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint16(uint256 value) internal pure returns (uint16) {\n        require(value <= type(uint16).max, \"SafeCast: value doesn't fit in 16 bits\");\n        return uint16(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint8 from uint256, reverting on\n     * overflow (when the input is greater than largest uint8).\n     *\n     * Counterpart to Solidity's `uint8` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 8 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint8(uint256 value) internal pure returns (uint8) {\n        require(value <= type(uint8).max, \"SafeCast: value doesn't fit in 8 bits\");\n        return uint8(value);\n    }\n\n    /**\n     * @dev Converts a signed int256 into an unsigned uint256.\n     *\n     * Requirements:\n     *\n     * - input must be greater than or equal to 0.\n     *\n     * _Available since v3.0._\n     */\n    function toUint256(int256 value) internal pure returns (uint256) {\n        require(value >= 0, \"SafeCast: value must be positive\");\n        return uint256(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int248 from int256, reverting on\n     * overflow (when the input is less than smallest int248 or\n     * greater than largest int248).\n     *\n     * Counterpart to Solidity's `int248` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 248 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt248(int256 value) internal pure returns (int248 downcasted) {\n        downcasted = int248(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 248 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int240 from int256, reverting on\n     * overflow (when the input is less than smallest int240 or\n     * greater than largest int240).\n     *\n     * Counterpart to Solidity's `int240` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 240 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt240(int256 value) internal pure returns (int240 downcasted) {\n        downcasted = int240(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 240 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int232 from int256, reverting on\n     * overflow (when the input is less than smallest int232 or\n     * greater than largest int232).\n     *\n     * Counterpart to Solidity's `int232` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 232 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt232(int256 value) internal pure returns (int232 downcasted) {\n        downcasted = int232(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 232 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int224 from int256, reverting on\n     * overflow (when the input is less than smallest int224 or\n     * greater than largest int224).\n     *\n     * Counterpart to Solidity's `int224` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 224 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt224(int256 value) internal pure returns (int224 downcasted) {\n        downcasted = int224(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 224 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int216 from int256, reverting on\n     * overflow (when the input is less than smallest int216 or\n     * greater than largest int216).\n     *\n     * Counterpart to Solidity's `int216` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 216 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt216(int256 value) internal pure returns (int216 downcasted) {\n        downcasted = int216(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 216 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int208 from int256, reverting on\n     * overflow (when the input is less than smallest int208 or\n     * greater than largest int208).\n     *\n     * Counterpart to Solidity's `int208` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 208 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt208(int256 value) internal pure returns (int208 downcasted) {\n        downcasted = int208(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 208 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int200 from int256, reverting on\n     * overflow (when the input is less than smallest int200 or\n     * greater than largest int200).\n     *\n     * Counterpart to Solidity's `int200` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 200 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt200(int256 value) internal pure returns (int200 downcasted) {\n        downcasted = int200(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 200 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int192 from int256, reverting on\n     * overflow (when the input is less than smallest int192 or\n     * greater than largest int192).\n     *\n     * Counterpart to Solidity's `int192` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 192 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt192(int256 value) internal pure returns (int192 downcasted) {\n        downcasted = int192(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 192 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int184 from int256, reverting on\n     * overflow (when the input is less than smallest int184 or\n     * greater than largest int184).\n     *\n     * Counterpart to Solidity's `int184` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 184 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt184(int256 value) internal pure returns (int184 downcasted) {\n        downcasted = int184(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 184 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int176 from int256, reverting on\n     * overflow (when the input is less than smallest int176 or\n     * greater than largest int176).\n     *\n     * Counterpart to Solidity's `int176` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 176 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt176(int256 value) internal pure returns (int176 downcasted) {\n        downcasted = int176(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 176 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int168 from int256, reverting on\n     * overflow (when the input is less than smallest int168 or\n     * greater than largest int168).\n     *\n     * Counterpart to Solidity's `int168` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 168 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt168(int256 value) internal pure returns (int168 downcasted) {\n        downcasted = int168(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 168 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int160 from int256, reverting on\n     * overflow (when the input is less than smallest int160 or\n     * greater than largest int160).\n     *\n     * Counterpart to Solidity's `int160` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 160 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt160(int256 value) internal pure returns (int160 downcasted) {\n        downcasted = int160(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 160 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int152 from int256, reverting on\n     * overflow (when the input is less than smallest int152 or\n     * greater than largest int152).\n     *\n     * Counterpart to Solidity's `int152` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 152 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt152(int256 value) internal pure returns (int152 downcasted) {\n        downcasted = int152(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 152 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int144 from int256, reverting on\n     * overflow (when the input is less than smallest int144 or\n     * greater than largest int144).\n     *\n     * Counterpart to Solidity's `int144` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 144 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt144(int256 value) internal pure returns (int144 downcasted) {\n        downcasted = int144(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 144 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int136 from int256, reverting on\n     * overflow (when the input is less than smallest int136 or\n     * greater than largest int136).\n     *\n     * Counterpart to Solidity's `int136` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 136 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt136(int256 value) internal pure returns (int136 downcasted) {\n        downcasted = int136(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 136 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int128 from int256, reverting on\n     * overflow (when the input is less than smallest int128 or\n     * greater than largest int128).\n     *\n     * Counterpart to Solidity's `int128` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 128 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt128(int256 value) internal pure returns (int128 downcasted) {\n        downcasted = int128(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 128 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int120 from int256, reverting on\n     * overflow (when the input is less than smallest int120 or\n     * greater than largest int120).\n     *\n     * Counterpart to Solidity's `int120` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 120 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt120(int256 value) internal pure returns (int120 downcasted) {\n        downcasted = int120(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 120 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int112 from int256, reverting on\n     * overflow (when the input is less than smallest int112 or\n     * greater than largest int112).\n     *\n     * Counterpart to Solidity's `int112` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 112 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt112(int256 value) internal pure returns (int112 downcasted) {\n        downcasted = int112(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 112 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int104 from int256, reverting on\n     * overflow (when the input is less than smallest int104 or\n     * greater than largest int104).\n     *\n     * Counterpart to Solidity's `int104` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 104 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt104(int256 value) internal pure returns (int104 downcasted) {\n        downcasted = int104(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 104 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int96 from int256, reverting on\n     * overflow (when the input is less than smallest int96 or\n     * greater than largest int96).\n     *\n     * Counterpart to Solidity's `int96` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 96 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt96(int256 value) internal pure returns (int96 downcasted) {\n        downcasted = int96(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 96 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int88 from int256, reverting on\n     * overflow (when the input is less than smallest int88 or\n     * greater than largest int88).\n     *\n     * Counterpart to Solidity's `int88` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 88 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt88(int256 value) internal pure returns (int88 downcasted) {\n        downcasted = int88(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 88 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int80 from int256, reverting on\n     * overflow (when the input is less than smallest int80 or\n     * greater than largest int80).\n     *\n     * Counterpart to Solidity's `int80` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 80 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt80(int256 value) internal pure returns (int80 downcasted) {\n        downcasted = int80(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 80 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int72 from int256, reverting on\n     * overflow (when the input is less than smallest int72 or\n     * greater than largest int72).\n     *\n     * Counterpart to Solidity's `int72` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 72 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt72(int256 value) internal pure returns (int72 downcasted) {\n        downcasted = int72(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 72 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int64 from int256, reverting on\n     * overflow (when the input is less than smallest int64 or\n     * greater than largest int64).\n     *\n     * Counterpart to Solidity's `int64` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 64 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt64(int256 value) internal pure returns (int64 downcasted) {\n        downcasted = int64(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 64 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int56 from int256, reverting on\n     * overflow (when the input is less than smallest int56 or\n     * greater than largest int56).\n     *\n     * Counterpart to Solidity's `int56` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 56 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt56(int256 value) internal pure returns (int56 downcasted) {\n        downcasted = int56(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 56 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int48 from int256, reverting on\n     * overflow (when the input is less than smallest int48 or\n     * greater than largest int48).\n     *\n     * Counterpart to Solidity's `int48` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 48 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt48(int256 value) internal pure returns (int48 downcasted) {\n        downcasted = int48(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 48 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int40 from int256, reverting on\n     * overflow (when the input is less than smallest int40 or\n     * greater than largest int40).\n     *\n     * Counterpart to Solidity's `int40` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 40 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt40(int256 value) internal pure returns (int40 downcasted) {\n        downcasted = int40(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 40 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int32 from int256, reverting on\n     * overflow (when the input is less than smallest int32 or\n     * greater than largest int32).\n     *\n     * Counterpart to Solidity's `int32` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 32 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt32(int256 value) internal pure returns (int32 downcasted) {\n        downcasted = int32(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 32 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int24 from int256, reverting on\n     * overflow (when the input is less than smallest int24 or\n     * greater than largest int24).\n     *\n     * Counterpart to Solidity's `int24` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 24 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt24(int256 value) internal pure returns (int24 downcasted) {\n        downcasted = int24(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 24 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int16 from int256, reverting on\n     * overflow (when the input is less than smallest int16 or\n     * greater than largest int16).\n     *\n     * Counterpart to Solidity's `int16` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 16 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt16(int256 value) internal pure returns (int16 downcasted) {\n        downcasted = int16(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 16 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int8 from int256, reverting on\n     * overflow (when the input is less than smallest int8 or\n     * greater than largest int8).\n     *\n     * Counterpart to Solidity's `int8` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 8 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt8(int256 value) internal pure returns (int8 downcasted) {\n        downcasted = int8(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 8 bits\");\n    }\n\n    /**\n     * @dev Converts an unsigned uint256 into a signed int256.\n     *\n     * Requirements:\n     *\n     * - input must be less than or equal to maxInt256.\n     *\n     * _Available since v3.0._\n     */\n    function toInt256(uint256 value) internal pure returns (int256) {\n        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive\n        require(value <= uint256(type(int256).max), \"SafeCast: value doesn't fit in an int256\");\n        return int256(value);\n    }\n}\n"
      },
      "solidity-bytes-utils/contracts/BytesLib.sol": {
        "content": "// SPDX-License-Identifier: Unlicense\n/*\n * @title Solidity Bytes Arrays Utils\n * @author Gonçalo Sá <goncalo.sa@consensys.net>\n *\n * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.\n *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.\n */\npragma solidity >=0.8.0 <0.9.0;\n\n\nlibrary BytesLib {\n    function concat(\n        bytes memory _preBytes,\n        bytes memory _postBytes\n    )\n        internal\n        pure\n        returns (bytes memory)\n    {\n        bytes memory tempBytes;\n\n        assembly {\n            // Get a location of some free memory and store it in tempBytes as\n            // Solidity does for memory variables.\n            tempBytes := mload(0x40)\n\n            // Store the length of the first bytes array at the beginning of\n            // the memory for tempBytes.\n            let length := mload(_preBytes)\n            mstore(tempBytes, length)\n\n            // Maintain a memory counter for the current write location in the\n            // temp bytes array by adding the 32 bytes for the array length to\n            // the starting location.\n            let mc := add(tempBytes, 0x20)\n            // Stop copying when the memory counter reaches the length of the\n            // first bytes array.\n            let end := add(mc, length)\n\n            for {\n                // Initialize a copy counter to the start of the _preBytes data,\n                // 32 bytes into its memory.\n                let cc := add(_preBytes, 0x20)\n            } lt(mc, end) {\n                // Increase both counters by 32 bytes each iteration.\n                mc := add(mc, 0x20)\n                cc := add(cc, 0x20)\n            } {\n                // Write the _preBytes data into the tempBytes memory 32 bytes\n                // at a time.\n                mstore(mc, mload(cc))\n            }\n\n            // Add the length of _postBytes to the current length of tempBytes\n            // and store it as the new length in the first 32 bytes of the\n            // tempBytes memory.\n            length := mload(_postBytes)\n            mstore(tempBytes, add(length, mload(tempBytes)))\n\n            // Move the memory counter back from a multiple of 0x20 to the\n            // actual end of the _preBytes data.\n            mc := end\n            // Stop copying when the memory counter reaches the new combined\n            // length of the arrays.\n            end := add(mc, length)\n\n            for {\n                let cc := add(_postBytes, 0x20)\n            } lt(mc, end) {\n                mc := add(mc, 0x20)\n                cc := add(cc, 0x20)\n            } {\n                mstore(mc, mload(cc))\n            }\n\n            // Update the free-memory pointer by padding our last write location\n            // to 32 bytes: add 31 bytes to the end of tempBytes to move to the\n            // next 32 byte block, then round down to the nearest multiple of\n            // 32. If the sum of the length of the two arrays is zero then add\n            // one before rounding down to leave a blank 32 bytes (the length block with 0).\n            mstore(0x40, and(\n              add(add(end, iszero(add(length, mload(_preBytes)))), 31),\n              not(31) // Round down to the nearest 32 bytes.\n            ))\n        }\n\n        return tempBytes;\n    }\n\n    function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal {\n        assembly {\n            // Read the first 32 bytes of _preBytes storage, which is the length\n            // of the array. (We don't need to use the offset into the slot\n            // because arrays use the entire slot.)\n            let fslot := sload(_preBytes.slot)\n            // Arrays of 31 bytes or less have an even value in their slot,\n            // while longer arrays have an odd value. The actual length is\n            // the slot divided by two for odd values, and the lowest order\n            // byte divided by two for even values.\n            // If the slot is even, bitwise and the slot with 255 and divide by\n            // two to get the length. If the slot is odd, bitwise and the slot\n            // with -1 and divide by two.\n            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)\n            let mlength := mload(_postBytes)\n            let newlength := add(slength, mlength)\n            // slength can contain both the length and contents of the array\n            // if length < 32 bytes so let's prepare for that\n            // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage\n            switch add(lt(slength, 32), lt(newlength, 32))\n            case 2 {\n                // Since the new array still fits in the slot, we just need to\n                // update the contents of the slot.\n                // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length\n                sstore(\n                    _preBytes.slot,\n                    // all the modifications to the slot are inside this\n                    // next block\n                    add(\n                        // we can just add to the slot contents because the\n                        // bytes we want to change are the LSBs\n                        fslot,\n                        add(\n                            mul(\n                                div(\n                                    // load the bytes from memory\n                                    mload(add(_postBytes, 0x20)),\n                                    // zero all bytes to the right\n                                    exp(0x100, sub(32, mlength))\n                                ),\n                                // and now shift left the number of bytes to\n                                // leave space for the length in the slot\n                                exp(0x100, sub(32, newlength))\n                            ),\n                            // increase length by the double of the memory\n                            // bytes length\n                            mul(mlength, 2)\n                        )\n                    )\n                )\n            }\n            case 1 {\n                // The stored value fits in the slot, but the combined value\n                // will exceed it.\n                // get the keccak hash to get the contents of the array\n                mstore(0x0, _preBytes.slot)\n                let sc := add(keccak256(0x0, 0x20), div(slength, 32))\n\n                // save new length\n                sstore(_preBytes.slot, add(mul(newlength, 2), 1))\n\n                // The contents of the _postBytes array start 32 bytes into\n                // the structure. Our first read should obtain the `submod`\n                // bytes that can fit into the unused space in the last word\n                // of the stored array. To get this, we read 32 bytes starting\n                // from `submod`, so the data we read overlaps with the array\n                // contents by `submod` bytes. Masking the lowest-order\n                // `submod` bytes allows us to add that value directly to the\n                // stored value.\n\n                let submod := sub(32, slength)\n                let mc := add(_postBytes, submod)\n                let end := add(_postBytes, mlength)\n                let mask := sub(exp(0x100, submod), 1)\n\n                sstore(\n                    sc,\n                    add(\n                        and(\n                            fslot,\n                            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00\n                        ),\n                        and(mload(mc), mask)\n                    )\n                )\n\n                for {\n                    mc := add(mc, 0x20)\n                    sc := add(sc, 1)\n                } lt(mc, end) {\n                    sc := add(sc, 1)\n                    mc := add(mc, 0x20)\n                } {\n                    sstore(sc, mload(mc))\n                }\n\n                mask := exp(0x100, sub(mc, end))\n\n                sstore(sc, mul(div(mload(mc), mask), mask))\n            }\n            default {\n                // get the keccak hash to get the contents of the array\n                mstore(0x0, _preBytes.slot)\n                // Start copying to the last used word of the stored array.\n                let sc := add(keccak256(0x0, 0x20), div(slength, 32))\n\n                // save new length\n                sstore(_preBytes.slot, add(mul(newlength, 2), 1))\n\n                // Copy over the first `submod` bytes of the new data as in\n                // case 1 above.\n                let slengthmod := mod(slength, 32)\n                let mlengthmod := mod(mlength, 32)\n                let submod := sub(32, slengthmod)\n                let mc := add(_postBytes, submod)\n                let end := add(_postBytes, mlength)\n                let mask := sub(exp(0x100, submod), 1)\n\n                sstore(sc, add(sload(sc), and(mload(mc), mask)))\n\n                for {\n                    sc := add(sc, 1)\n                    mc := add(mc, 0x20)\n                } lt(mc, end) {\n                    sc := add(sc, 1)\n                    mc := add(mc, 0x20)\n                } {\n                    sstore(sc, mload(mc))\n                }\n\n                mask := exp(0x100, sub(mc, end))\n\n                sstore(sc, mul(div(mload(mc), mask), mask))\n            }\n        }\n    }\n\n    function slice(\n        bytes memory _bytes,\n        uint256 _start,\n        uint256 _length\n    )\n        internal\n        pure\n        returns (bytes memory)\n    {\n        require(_length + 31 >= _length, \"slice_overflow\");\n        require(_bytes.length >= _start + _length, \"slice_outOfBounds\");\n\n        bytes memory tempBytes;\n\n        assembly {\n            switch iszero(_length)\n            case 0 {\n                // Get a location of some free memory and store it in tempBytes as\n                // Solidity does for memory variables.\n                tempBytes := mload(0x40)\n\n                // The first word of the slice result is potentially a partial\n                // word read from the original array. To read it, we calculate\n                // the length of that partial word and start copying that many\n                // bytes into the array. The first word we copy will start with\n                // data we don't care about, but the last `lengthmod` bytes will\n                // land at the beginning of the contents of the new array. When\n                // we're done copying, we overwrite the full first word with\n                // the actual length of the slice.\n                let lengthmod := and(_length, 31)\n\n                // The multiplication in the next line is necessary\n                // because when slicing multiples of 32 bytes (lengthmod == 0)\n                // the following copy loop was copying the origin's length\n                // and then ending prematurely not copying everything it should.\n                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))\n                let end := add(mc, _length)\n\n                for {\n                    // The multiplication in the next line has the same exact purpose\n                    // as the one above.\n                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)\n                } lt(mc, end) {\n                    mc := add(mc, 0x20)\n                    cc := add(cc, 0x20)\n                } {\n                    mstore(mc, mload(cc))\n                }\n\n                mstore(tempBytes, _length)\n\n                //update free-memory pointer\n                //allocating the array padded to 32 bytes like the compiler does now\n                mstore(0x40, and(add(mc, 31), not(31)))\n            }\n            //if we want a zero-length slice let's just return a zero-length array\n            default {\n                tempBytes := mload(0x40)\n                //zero out the 32 bytes slice we are about to return\n                //we need to do it because Solidity does not garbage collect\n                mstore(tempBytes, 0)\n\n                mstore(0x40, add(tempBytes, 0x20))\n            }\n        }\n\n        return tempBytes;\n    }\n\n    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {\n        require(_bytes.length >= _start + 20, \"toAddress_outOfBounds\");\n        address tempAddress;\n\n        assembly {\n            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)\n        }\n\n        return tempAddress;\n    }\n\n    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {\n        require(_bytes.length >= _start + 1 , \"toUint8_outOfBounds\");\n        uint8 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0x1), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {\n        require(_bytes.length >= _start + 2, \"toUint16_outOfBounds\");\n        uint16 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0x2), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {\n        require(_bytes.length >= _start + 4, \"toUint32_outOfBounds\");\n        uint32 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0x4), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {\n        require(_bytes.length >= _start + 8, \"toUint64_outOfBounds\");\n        uint64 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0x8), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {\n        require(_bytes.length >= _start + 12, \"toUint96_outOfBounds\");\n        uint96 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0xc), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {\n        require(_bytes.length >= _start + 16, \"toUint128_outOfBounds\");\n        uint128 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0x10), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {\n        require(_bytes.length >= _start + 32, \"toUint256_outOfBounds\");\n        uint256 tempUint;\n\n        assembly {\n            tempUint := mload(add(add(_bytes, 0x20), _start))\n        }\n\n        return tempUint;\n    }\n\n    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {\n        require(_bytes.length >= _start + 32, \"toBytes32_outOfBounds\");\n        bytes32 tempBytes32;\n\n        assembly {\n            tempBytes32 := mload(add(add(_bytes, 0x20), _start))\n        }\n\n        return tempBytes32;\n    }\n\n    function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {\n        bool success = true;\n\n        assembly {\n            let length := mload(_preBytes)\n\n            // if lengths don't match the arrays are not equal\n            switch eq(length, mload(_postBytes))\n            case 1 {\n                // cb is a circuit breaker in the for loop since there's\n                //  no said feature for inline assembly loops\n                // cb = 1 - don't breaker\n                // cb = 0 - break\n                let cb := 1\n\n                let mc := add(_preBytes, 0x20)\n                let end := add(mc, length)\n\n                for {\n                    let cc := add(_postBytes, 0x20)\n                // the next line is the loop condition:\n                // while(uint256(mc < end) + cb == 2)\n                } eq(add(lt(mc, end), cb), 2) {\n                    mc := add(mc, 0x20)\n                    cc := add(cc, 0x20)\n                } {\n                    // if any of these checks fails then arrays are not equal\n                    if iszero(eq(mload(mc), mload(cc))) {\n                        // unsuccess:\n                        success := 0\n                        cb := 0\n                    }\n                }\n            }\n            default {\n                // unsuccess:\n                success := 0\n            }\n        }\n\n        return success;\n    }\n\n    function equal_nonAligned(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {\n        bool success = true;\n\n        assembly {\n            let length := mload(_preBytes)\n\n            // if lengths don't match the arrays are not equal\n            switch eq(length, mload(_postBytes))\n            case 1 {\n                // cb is a circuit breaker in the for loop since there's\n                //  no said feature for inline assembly loops\n                // cb = 1 - don't breaker\n                // cb = 0 - break\n                let cb := 1\n\n                let endMinusWord := add(_preBytes, length)\n                let mc := add(_preBytes, 0x20)\n                let cc := add(_postBytes, 0x20)\n\n                for {\n                // the next line is the loop condition:\n                // while(uint256(mc < endWord) + cb == 2)\n                } eq(add(lt(mc, endMinusWord), cb), 2) {\n                    mc := add(mc, 0x20)\n                    cc := add(cc, 0x20)\n                } {\n                    // if any of these checks fails then arrays are not equal\n                    if iszero(eq(mload(mc), mload(cc))) {\n                        // unsuccess:\n                        success := 0\n                        cb := 0\n                    }\n                }\n\n                // Only if still successful\n                // For <1 word tail bytes\n                if gt(success, 0) {\n                    // Get the remainder of length/32\n                    // length % 32 = AND(length, 32 - 1)\n                    let numTailBytes := and(length, 0x1f)\n                    let mcRem := mload(mc)\n                    let ccRem := mload(cc)\n                    for {\n                        let i := 0\n                    // the next line is the loop condition:\n                    // while(uint256(i < numTailBytes) + cb == 2)\n                    } eq(add(lt(i, numTailBytes), cb), 2) {\n                        i := add(i, 1)\n                    } {\n                        if iszero(eq(byte(i, mcRem), byte(i, ccRem))) {\n                            // unsuccess:\n                            success := 0\n                            cb := 0\n                        }\n                    }\n                }\n            }\n            default {\n                // unsuccess:\n                success := 0\n            }\n        }\n\n        return success;\n    }\n\n    function equalStorage(\n        bytes storage _preBytes,\n        bytes memory _postBytes\n    )\n        internal\n        view\n        returns (bool)\n    {\n        bool success = true;\n\n        assembly {\n            // we know _preBytes_offset is 0\n            let fslot := sload(_preBytes.slot)\n            // Decode the length of the stored array like in concatStorage().\n            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)\n            let mlength := mload(_postBytes)\n\n            // if lengths don't match the arrays are not equal\n            switch eq(slength, mlength)\n            case 1 {\n                // slength can contain both the length and contents of the array\n                // if length < 32 bytes so let's prepare for that\n                // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage\n                if iszero(iszero(slength)) {\n                    switch lt(slength, 32)\n                    case 1 {\n                        // blank the last byte which is the length\n                        fslot := mul(div(fslot, 0x100), 0x100)\n\n                        if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) {\n                            // unsuccess:\n                            success := 0\n                        }\n                    }\n                    default {\n                        // cb is a circuit breaker in the for loop since there's\n                        //  no said feature for inline assembly loops\n                        // cb = 1 - don't breaker\n                        // cb = 0 - break\n                        let cb := 1\n\n                        // get the keccak hash to get the contents of the array\n                        mstore(0x0, _preBytes.slot)\n                        let sc := keccak256(0x0, 0x20)\n\n                        let mc := add(_postBytes, 0x20)\n                        let end := add(mc, mlength)\n\n                        // the next line is the loop condition:\n                        // while(uint256(mc < end) + cb == 2)\n                        for {} eq(add(lt(mc, end), cb), 2) {\n                            sc := add(sc, 1)\n                            mc := add(mc, 0x20)\n                        } {\n                            if iszero(eq(sload(sc), mload(mc))) {\n                                // unsuccess:\n                                success := 0\n                                cb := 0\n                            }\n                        }\n                    }\n                }\n            }\n            default {\n                // unsuccess:\n                success := 0\n            }\n        }\n\n        return success;\n    }\n}\n"
      }
    },
    "settings": {
      "optimizer": {
        "enabled": true,
        "runs": 200
      },
      "evmVersion": "paris",
      "outputSelection": {
        "*": {
          "*": [
            "evm.bytecode",
            "evm.deployedBytecode",
            "devdoc",
            "userdoc",
            "metadata",
            "abi"
          ]
        }
      },
      "libraries": {}
    }
  }}