@etherspot/contracts/deployments/goerli/solcInputs/75b4ea7228ac6b339feb05b961462ee8.json

Etherspot Solidity contracts

{
  "language": "Solidity",
  "sources": {
    "src/bridges/Diamond.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4 <0.9.0;\n\nimport {LibDiamond} from \"./libs/LibDiamond.sol\";\nimport {IDiamondCut} from \"./interfaces/IDiamondCut.sol\";\n\ncontract Diamond {\n  constructor(address _contractOwner, address _diamondCutFacet) payable {\n    LibDiamond.setContractOwner(_contractOwner);\n\n    // Add the diamondCut external function from the diamondCutFacet\n    IDiamondCut.FacetCut[] memory cut = new IDiamondCut.FacetCut[](1);\n    bytes4[] memory functionSelectors = new bytes4[](1);\n    functionSelectors[0] = IDiamondCut.diamondCut.selector;\n    cut[0] = IDiamondCut.FacetCut({\n      facetAddress: _diamondCutFacet,\n      action: IDiamondCut.FacetCutAction.Add,\n      functionSelectors: functionSelectors\n    });\n    LibDiamond.diamondCut(cut, address(0), \"\");\n  }\n\n  // Find facet for function that is called and execute the\n  // function if a facet is found and return any value.\n  // solhint-disable-next-line no-complex-fallback\n  fallback() external payable {\n    LibDiamond.DiamondStorage storage ds;\n    bytes32 position = LibDiamond.DIAMOND_STORAGE_POSITION;\n\n    // get diamond storage\n    // solhint-disable-next-line no-inline-assembly\n    assembly {\n      ds.slot := position\n    }\n\n    // get facet from function selector\n    address facet = ds.selectorToFacetAndPosition[msg.sig].facetAddress;\n    require(facet != address(0), \"Diamond: Function does not exist\");\n\n    // Execute external function from facet using delegatecall and return any value.\n    // solhint-disable-next-line no-inline-assembly\n    assembly {\n      // copy function selector and any arguments\n      calldatacopy(0, 0, calldatasize())\n      // execute function call using the facet\n      let result := delegatecall(gas(), facet, 0, calldatasize(), 0, 0)\n      // get any return value\n      returndatacopy(0, 0, returndatasize())\n      // return any return value or error back to the caller\n      switch result\n      case 0 {\n        revert(0, returndatasize())\n      }\n      default {\n        return(0, returndatasize())\n      }\n    }\n  }\n\n  // Able to receive ether\n  // solhint-disable-next-line no-empty-blocks\n  receive() external payable {}\n}\n"
    },
    "src/bridges/libs/LibDiamond.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4 <0.9.0;\n\nimport {IDiamondCut} from \"../interfaces/IDiamondCut.sol\";\n\nlibrary LibDiamond {\n    bytes32 internal constant DIAMOND_STORAGE_POSITION =\n        keccak256(\"diamond.standard.diamond.storage\");\n\n    struct FacetAddressAndPosition {\n        address facetAddress;\n        uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array\n    }\n\n    struct FacetFunctionSelectors {\n        bytes4[] functionSelectors;\n        uint256 facetAddressPosition; // position of facetAddress in facetAddresses array\n    }\n\n    struct DiamondStorage {\n        // maps function selector to the facet address and\n        // the position of the selector in the facetFunctionSelectors.selectors array\n        mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition;\n        // maps facet addresses to function selectors\n        mapping(address => FacetFunctionSelectors) facetFunctionSelectors;\n        // facet addresses\n        address[] facetAddresses;\n        // Used to query if a contract implements an interface.\n        // Used to implement ERC-165.\n        mapping(bytes4 => bool) supportedInterfaces;\n        // owner of the contract\n        address contractOwner;\n    }\n\n    function diamondStorage()\n        internal\n        pure\n        returns (DiamondStorage storage ds)\n    {\n        bytes32 position = DIAMOND_STORAGE_POSITION;\n        // solhint-disable-next-line no-inline-assembly\n        assembly {\n            ds.slot := position\n        }\n    }\n\n    event OwnershipTransferred(\n        address indexed previousOwner,\n        address indexed newOwner\n    );\n\n    function setContractOwner(address _newOwner) internal {\n        DiamondStorage storage ds = diamondStorage();\n        address previousOwner = ds.contractOwner;\n        ds.contractOwner = _newOwner;\n        emit OwnershipTransferred(previousOwner, _newOwner);\n    }\n\n    function contractOwner() internal view returns (address contractOwner_) {\n        contractOwner_ = diamondStorage().contractOwner;\n    }\n\n    function enforceIsContractOwner() internal view {\n        require(\n            msg.sender == diamondStorage().contractOwner,\n            \"LibDiamond: Must be contract owner\"\n        );\n    }\n\n    event DiamondCut(\n        IDiamondCut.FacetCut[] _diamondCut,\n        address _init,\n        bytes _calldata\n    );\n\n    // Internal function version of diamondCut\n    function diamondCut(\n        IDiamondCut.FacetCut[] memory _diamondCut,\n        address _init,\n        bytes memory _calldata\n    ) internal {\n        for (\n            uint256 facetIndex;\n            facetIndex < _diamondCut.length;\n            facetIndex++\n        ) {\n            IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action;\n            if (action == IDiamondCut.FacetCutAction.Add) {\n                addFunctions(\n                    _diamondCut[facetIndex].facetAddress,\n                    _diamondCut[facetIndex].functionSelectors\n                );\n            } else if (action == IDiamondCut.FacetCutAction.Replace) {\n                replaceFunctions(\n                    _diamondCut[facetIndex].facetAddress,\n                    _diamondCut[facetIndex].functionSelectors\n                );\n            } else if (action == IDiamondCut.FacetCutAction.Remove) {\n                removeFunctions(\n                    _diamondCut[facetIndex].facetAddress,\n                    _diamondCut[facetIndex].functionSelectors\n                );\n            } else {\n                revert(\"LibDiamondCut: Incorrect FacetCutAction\");\n            }\n        }\n        emit DiamondCut(_diamondCut, _init, _calldata);\n        initializeDiamondCut(_init, _calldata);\n    }\n\n    function addFunctions(\n        address _facetAddress,\n        bytes4[] memory _functionSelectors\n    ) internal {\n        require(\n            _functionSelectors.length > 0,\n            \"LibDiamondCut: No selectors in facet to cut\"\n        );\n        DiamondStorage storage ds = diamondStorage();\n        require(\n            _facetAddress != address(0),\n            \"LibDiamondCut: Add facet can't be address(0)\"\n        );\n        uint96 selectorPosition = uint96(\n            ds.facetFunctionSelectors[_facetAddress].functionSelectors.length\n        );\n        // add new facet address if it does not exist\n        if (selectorPosition == 0) {\n            addFacet(ds, _facetAddress);\n        }\n        for (\n            uint256 selectorIndex;\n            selectorIndex < _functionSelectors.length;\n            selectorIndex++\n        ) {\n            bytes4 selector = _functionSelectors[selectorIndex];\n            address oldFacetAddress = ds\n                .selectorToFacetAndPosition[selector]\n                .facetAddress;\n            require(\n                oldFacetAddress == address(0),\n                \"LibDiamondCut: Can't add function that already exists\"\n            );\n            addFunction(ds, selector, selectorPosition, _facetAddress);\n            selectorPosition++;\n        }\n    }\n\n    function replaceFunctions(\n        address _facetAddress,\n        bytes4[] memory _functionSelectors\n    ) internal {\n        require(\n            _functionSelectors.length > 0,\n            \"LibDiamondCut: No selectors in facet to cut\"\n        );\n        DiamondStorage storage ds = diamondStorage();\n        require(\n            _facetAddress != address(0),\n            \"LibDiamondCut: Add facet can't be address(0)\"\n        );\n        uint96 selectorPosition = uint96(\n            ds.facetFunctionSelectors[_facetAddress].functionSelectors.length\n        );\n        // add new facet address if it does not exist\n        if (selectorPosition == 0) {\n            addFacet(ds, _facetAddress);\n        }\n        for (\n            uint256 selectorIndex;\n            selectorIndex < _functionSelectors.length;\n            selectorIndex++\n        ) {\n            bytes4 selector = _functionSelectors[selectorIndex];\n            address oldFacetAddress = ds\n                .selectorToFacetAndPosition[selector]\n                .facetAddress;\n            require(\n                oldFacetAddress != _facetAddress,\n                \"LibDiamondCut: Can't replace function with same function\"\n            );\n            removeFunction(ds, oldFacetAddress, selector);\n            addFunction(ds, selector, selectorPosition, _facetAddress);\n            selectorPosition++;\n        }\n    }\n\n    function removeFunctions(\n        address _facetAddress,\n        bytes4[] memory _functionSelectors\n    ) internal {\n        require(\n            _functionSelectors.length > 0,\n            \"LibDiamondCut: No selectors in facet to cut\"\n        );\n        DiamondStorage storage ds = diamondStorage();\n        // if function does not exist then do nothing and return\n        require(\n            _facetAddress == address(0),\n            \"LibDiamondCut: Remove facet address must be address(0)\"\n        );\n        for (\n            uint256 selectorIndex;\n            selectorIndex < _functionSelectors.length;\n            selectorIndex++\n        ) {\n            bytes4 selector = _functionSelectors[selectorIndex];\n            address oldFacetAddress = ds\n                .selectorToFacetAndPosition[selector]\n                .facetAddress;\n            removeFunction(ds, oldFacetAddress, selector);\n        }\n    }\n\n    function addFacet(DiamondStorage storage ds, address _facetAddress)\n        internal\n    {\n        enforceHasContractCode(\n            _facetAddress,\n            \"LibDiamondCut: New facet has no code\"\n        );\n        ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds\n            .facetAddresses\n            .length;\n        ds.facetAddresses.push(_facetAddress);\n    }\n\n    function addFunction(\n        DiamondStorage storage ds,\n        bytes4 _selector,\n        uint96 _selectorPosition,\n        address _facetAddress\n    ) internal {\n        ds\n            .selectorToFacetAndPosition[_selector]\n            .functionSelectorPosition = _selectorPosition;\n        ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(\n            _selector\n        );\n        ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress;\n    }\n\n    function removeFunction(\n        DiamondStorage storage ds,\n        address _facetAddress,\n        bytes4 _selector\n    ) internal {\n        require(\n            _facetAddress != address(0),\n            \"LibDiamondCut: Can't remove function that doesn't exist\"\n        );\n        // an immutable function is a function defined directly in a diamond\n        require(\n            _facetAddress != address(this),\n            \"LibDiamondCut: Can't remove immutable function\"\n        );\n        // replace selector with last selector, then delete last selector\n        uint256 selectorPosition = ds\n            .selectorToFacetAndPosition[_selector]\n            .functionSelectorPosition;\n        uint256 lastSelectorPosition = ds\n            .facetFunctionSelectors[_facetAddress]\n            .functionSelectors\n            .length - 1;\n        // if not the same then replace _selector with lastSelector\n        if (selectorPosition != lastSelectorPosition) {\n            bytes4 lastSelector = ds\n                .facetFunctionSelectors[_facetAddress]\n                .functionSelectors[lastSelectorPosition];\n            ds.facetFunctionSelectors[_facetAddress].functionSelectors[\n                    selectorPosition\n                ] = lastSelector;\n            ds\n                .selectorToFacetAndPosition[lastSelector]\n                .functionSelectorPosition = uint96(selectorPosition);\n        }\n        // delete the last selector\n        ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop();\n        delete ds.selectorToFacetAndPosition[_selector];\n\n        // if no more selectors for facet address then delete the facet address\n        if (lastSelectorPosition == 0) {\n            // replace facet address with last facet address and delete last facet address\n            uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1;\n            uint256 facetAddressPosition = ds\n                .facetFunctionSelectors[_facetAddress]\n                .facetAddressPosition;\n            if (facetAddressPosition != lastFacetAddressPosition) {\n                address lastFacetAddress = ds.facetAddresses[\n                    lastFacetAddressPosition\n                ];\n                ds.facetAddresses[facetAddressPosition] = lastFacetAddress;\n                ds\n                    .facetFunctionSelectors[lastFacetAddress]\n                    .facetAddressPosition = facetAddressPosition;\n            }\n            ds.facetAddresses.pop();\n            delete ds\n                .facetFunctionSelectors[_facetAddress]\n                .facetAddressPosition;\n        }\n    }\n\n    function initializeDiamondCut(address _init, bytes memory _calldata)\n        internal\n    {\n        if (_init == address(0)) {\n            require(\n                _calldata.length == 0,\n                \"LibDiamondCut: _init is address(0) but_calldata is not empty\"\n            );\n        } else {\n            require(\n                _calldata.length > 0,\n                \"LibDiamondCut: _calldata is empty but _init is not address(0)\"\n            );\n            if (_init != address(this)) {\n                enforceHasContractCode(\n                    _init,\n                    \"LibDiamondCut: _init address has no code\"\n                );\n            }\n            // solhint-disable-next-line avoid-low-level-calls\n            (bool success, bytes memory error) = _init.delegatecall(_calldata);\n            if (!success) {\n                if (error.length > 0) {\n                    // bubble up the error\n                    revert(string(error));\n                } else {\n                    revert(\"LibDiamondCut: _init function reverted\");\n                }\n            }\n        }\n    }\n\n    function enforceHasContractCode(\n        address _contract,\n        string memory _errorMessage\n    ) internal view {\n        uint256 contractSize;\n        // solhint-disable-next-line no-inline-assembly\n        assembly {\n            contractSize := extcodesize(_contract)\n        }\n        require(contractSize > 0, _errorMessage);\n    }\n}\n"
    },
    "src/bridges/interfaces/IDiamondCut.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4 <0.9.0;\n\ninterface IDiamondCut {\n    enum FacetCutAction {\n        Add,\n        Replace,\n        Remove\n    }\n    // Add=0, Replace=1, Remove=2\n\n    struct FacetCut {\n        address facetAddress;\n        FacetCutAction action;\n        bytes4[] functionSelectors;\n    }\n\n    /// @notice Add/replace/remove any number of functions and optionally execute\n    ///         a function with delegatecall\n    /// @param _diamondCut Contains the facet addresses and function selectors\n    /// @param _init The address of the contract or facet to execute _calldata\n    /// @param _calldata A function call, including function selector and arguments\n    ///                  _calldata is executed with delegatecall on _init\n    function diamondCut(\n        FacetCut[] calldata _diamondCut,\n        address _init,\n        bytes calldata _calldata\n    ) external;\n\n    event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);\n}\n"
    },
    "src/bridges/facets/DiamondCutFacet.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4 <0.9.0;\n\nimport { IDiamondCut } from \"../interfaces/IDiamondCut.sol\";\nimport { LibDiamond } from \"../libs/LibDiamond.sol\";\n\ncontract DiamondCutFacet is IDiamondCut {\n  /// @notice Add/replace/remove any number of functions and optionally execute\n  ///         a function with delegatecall\n  /// @param _diamondCut Contains the facet addresses and function selectors\n  /// @param _init The address of the contract or facet to execute _calldata\n  /// @param _calldata A function call, including function selector and arguments\n  ///                  _calldata is executed with delegatecall on _init\n  function diamondCut(\n    FacetCut[] calldata _diamondCut,\n    address _init,\n    bytes calldata _calldata\n  ) external override {\n    LibDiamond.enforceIsContractOwner();\n    LibDiamond.diamondCut(_diamondCut, _init, _calldata);\n  }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (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(\n        address from,\n        address to,\n        uint256 amount\n    ) external returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../token/ERC20/IERC20.sol\";\n"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (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     *\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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, \"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(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) 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        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(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        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(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        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason 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            // 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\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}\n"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.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    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) 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(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) 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    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\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        if (returndata.length > 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}\n"
    },
    "@connext/nxtp-contracts/contracts/core/connext/libraries/AssetLogic.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.17;\n\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {IERC20Metadata} from \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\n\nimport {TypeCasts} from \"../../../shared/libraries/TypeCasts.sol\";\n\nimport {IStableSwap} from \"../interfaces/IStableSwap.sol\";\n\nimport {LibConnextStorage, AppStorage, TokenConfig} from \"./LibConnextStorage.sol\";\nimport {SwapUtils} from \"./SwapUtils.sol\";\nimport {Constants} from \"./Constants.sol\";\nimport {TokenId} from \"./TokenId.sol\";\n\nlibrary AssetLogic {\n  // ============ Libraries ============\n\n  using SwapUtils for SwapUtils.Swap;\n  using SafeERC20 for IERC20Metadata;\n\n  // ============ Errors ============\n\n  error AssetLogic__handleIncomingAsset_nativeAssetNotSupported();\n  error AssetLogic__handleIncomingAsset_feeOnTransferNotSupported();\n  error AssetLogic__handleOutgoingAsset_notNative();\n  error AssetLogic__getTokenIndexFromStableSwapPool_notExist();\n  error AssetLogic__getConfig_notRegistered();\n  error AssetLogic__swapAsset_externalStableSwapPoolDoesNotExist();\n\n  // ============ Internal: Handle Transfer ============\n\n  function getConfig(bytes32 _key) internal view returns (TokenConfig storage) {\n    AppStorage storage s = LibConnextStorage.connextStorage();\n    TokenConfig storage config = s.tokenConfigs[_key];\n\n    // Sanity check: not empty\n    // NOTE: adopted decimals will *always* be nonzero (or reflect what is onchain\n    // for the asset). The same is not true for the representation assets, which\n    // will always have 0 decimals on the canonical domain\n    if (config.adoptedDecimals < 1) {\n      revert AssetLogic__getConfig_notRegistered();\n    }\n\n    return config;\n  }\n\n  /**\n   * @notice Handles transferring funds from msg.sender to the Connext contract.\n   * @dev Does NOT work with fee-on-transfer tokens: will revert.\n   *\n   * @param _asset - The address of the ERC20 token to transfer.\n   * @param _amount - The specified amount to transfer.\n   */\n  function handleIncomingAsset(address _asset, uint256 _amount) internal {\n    // Sanity check: if amount is 0, do nothing.\n    if (_amount == 0) {\n      return;\n    }\n    // Sanity check: asset address is not zero.\n    if (_asset == address(0)) {\n      revert AssetLogic__handleIncomingAsset_nativeAssetNotSupported();\n    }\n\n    IERC20Metadata asset = IERC20Metadata(_asset);\n\n    // Record starting amount to validate correct amount is transferred.\n    uint256 starting = asset.balanceOf(address(this));\n\n    // Transfer asset to contract.\n    asset.safeTransferFrom(msg.sender, address(this), _amount);\n\n    // Ensure correct amount was transferred (i.e. this was not a fee-on-transfer token).\n    if (asset.balanceOf(address(this)) - starting != _amount) {\n      revert AssetLogic__handleIncomingAsset_feeOnTransferNotSupported();\n    }\n  }\n\n  /**\n   * @notice Handles transferring funds from the Connext contract to a specified address\n   * @param _asset - The address of the ERC20 token to transfer.\n   * @param _to - The recipient address that will receive the funds.\n   * @param _amount - The amount to withdraw from contract.\n   */\n  function handleOutgoingAsset(\n    address _asset,\n    address _to,\n    uint256 _amount\n  ) internal {\n    // Sanity check: if amount is 0, do nothing.\n    if (_amount == 0) {\n      return;\n    }\n    // Sanity check: asset address is not zero.\n    if (_asset == address(0)) revert AssetLogic__handleOutgoingAsset_notNative();\n\n    // Transfer ERC20 asset to target recipient.\n    SafeERC20.safeTransfer(IERC20Metadata(_asset), _to, _amount);\n  }\n\n  // ============ Internal: StableSwap Pools ============\n\n  /**\n   * @notice Return the index of the given token address. Reverts if no matching\n   * token is found.\n   * @param key the hash of the canonical id and domain\n   * @param tokenAddress address of the token\n   * @return the index of the given token address\n   */\n  function getTokenIndexFromStableSwapPool(bytes32 key, address tokenAddress) internal view returns (uint8) {\n    AppStorage storage s = LibConnextStorage.connextStorage();\n    uint8 index = s.tokenIndexes[key][tokenAddress];\n    if (address(s.swapStorages[key].pooledTokens[index]) != tokenAddress)\n      revert AssetLogic__getTokenIndexFromStableSwapPool_notExist();\n    return index;\n  }\n\n  // ============ Internal: Handle Swap ============\n\n  /**\n   * @notice Swaps an adopted asset to the local (representation or canonical) asset.\n   * @dev Will not swap if the asset passed in is the local asset.\n   * @param _key - The hash of canonical id and domain.\n   * @param _asset - The address of the adopted asset to swap into the local asset.\n   * @param _amount - The amount of the adopted asset to swap.\n   * @param _slippage - The maximum amount of slippage user will take on from _amount in BPS.\n   * @return uint256 The amount of local asset received from swap.\n   */\n  function swapToLocalAssetIfNeeded(\n    bytes32 _key,\n    address _asset,\n    address _local,\n    uint256 _amount,\n    uint256 _slippage\n  ) internal returns (uint256) {\n    // If there's no amount, no need to swap.\n    if (_amount == 0) {\n      return 0;\n    }\n\n    // Check the case where the adopted asset *is* the local asset. If so, no need to swap.\n    if (_local == _asset) {\n      return _amount;\n    }\n\n    // Get the configs.\n    TokenConfig storage config = getConfig(_key);\n\n    // Swap the asset to the proper local asset.\n    (uint256 out, ) = _swapAsset(\n      _key,\n      _asset,\n      _local,\n      _amount,\n      calculateSlippageBoundary(config.adoptedDecimals, config.representationDecimals, _amount, _slippage)\n    );\n    return out;\n  }\n\n  /**\n   * @notice Swaps a local bridge asset for the adopted asset using the stored stable swap\n   * @dev Will not swap if the asset passed in is the adopted asset\n   * @param _key the hash of the canonical id and domain\n   * @param _asset - The address of the local asset to swap into the adopted asset\n   * @param _amount - The amount of the local asset to swap\n   * @param _slippage - The minimum amount of slippage user will take on from _amount in BPS\n   * @param _normalizedIn - The amount sent in on xcall to take the slippage from, in 18 decimals\n   * by convention\n   * @return The amount of adopted asset received from swap\n   * @return The address of asset received post-swap\n   */\n  function swapFromLocalAssetIfNeeded(\n    bytes32 _key,\n    address _asset,\n    uint256 _amount,\n    uint256 _slippage,\n    uint256 _normalizedIn\n  ) internal returns (uint256, address) {\n    // Get the token config.\n    TokenConfig storage config = getConfig(_key);\n    address adopted = config.adopted;\n\n    // If the adopted asset is the local asset, no need to swap.\n    if (adopted == _asset) {\n      return (_amount, adopted);\n    }\n\n    // If there's no amount, no need to swap.\n    if (_amount == 0) {\n      return (_amount, adopted);\n    }\n\n    // Swap the asset to the proper local asset\n    return\n      _swapAsset(\n        _key,\n        _asset,\n        adopted,\n        _amount,\n        // NOTE: To get the slippage boundary here, you must take the slippage % off of the\n        // normalized amount in (at 18 decimals by convention), then convert that amount\n        // to the proper decimals of adopted.\n        calculateSlippageBoundary(\n          Constants.DEFAULT_NORMALIZED_DECIMALS,\n          config.adoptedDecimals,\n          _normalizedIn,\n          _slippage\n        )\n      );\n  }\n\n  /**\n   * @notice Swaps a local bridge asset for the adopted asset using the stored stable swap\n   * @dev Will not swap if the asset passed in is the adopted asset\n   * @param _key the hash of the canonical id and domain\n   * @param _asset - The address of the local asset to swap into the adopted asset\n   * @param _amount - The exact amount to receive out of the swap\n   * @param _maxIn - The most you will supply to the swap\n   * @return The amount of local asset put into  swap\n   * @return The address of asset received post-swap\n   */\n  function swapFromLocalAssetIfNeededForExactOut(\n    bytes32 _key,\n    address _asset,\n    uint256 _amount,\n    uint256 _maxIn\n  ) internal returns (uint256, address) {\n    TokenConfig storage config = getConfig(_key);\n\n    // If the adopted asset is the local asset, no need to swap.\n    address adopted = config.adopted;\n    if (adopted == _asset) {\n      return (_amount, adopted);\n    }\n\n    return _swapAssetOut(_key, _asset, adopted, _amount, _maxIn);\n  }\n\n  /**\n   * @notice Swaps assetIn to assetOut using the stored stable swap or internal swap pool.\n   * @dev Will not swap if the asset passed in is the adopted asset\n   * @param _key - The hash of canonical id and domain.\n   * @param _assetIn - The address of the from asset\n   * @param _assetOut - The address of the to asset\n   * @param _amount - The amount of the local asset to swap\n   * @param _minOut - The minimum amount of `_assetOut` the user will accept\n   * @return The amount of asset received\n   * @return The address of asset received\n   */\n  function _swapAsset(\n    bytes32 _key,\n    address _assetIn,\n    address _assetOut,\n    uint256 _amount,\n    uint256 _minOut\n  ) internal returns (uint256, address) {\n    AppStorage storage s = LibConnextStorage.connextStorage();\n\n    // Retrieve internal swap pool reference.\n    SwapUtils.Swap storage ipool = s.swapStorages[_key];\n\n    if (ipool.exists()) {\n      // Swap via the internal pool.\n      return (\n        ipool.swapInternal(\n          getTokenIndexFromStableSwapPool(_key, _assetIn),\n          getTokenIndexFromStableSwapPool(_key, _assetOut),\n          _amount,\n          _minOut\n        ),\n        _assetOut\n      );\n    } else {\n      // Otherwise, swap via external stableswap pool.\n      IStableSwap pool = IStableSwap(getConfig(_key).adoptedToLocalExternalPools);\n\n      IERC20Metadata assetIn = IERC20Metadata(_assetIn);\n\n      assetIn.safeApprove(address(pool), 0);\n      assetIn.safeIncreaseAllowance(address(pool), _amount);\n\n      // NOTE: If pool is not registered here, then this call will revert.\n      return (\n        pool.swapExact(_amount, _assetIn, _assetOut, _minOut, block.timestamp + Constants.DEFAULT_DEADLINE_EXTENSION),\n        _assetOut\n      );\n    }\n  }\n\n  /**\n   * @notice Swaps assetIn to assetOut using the stored stable swap or internal swap pool.\n   * @param _key - The hash of the canonical id and domain.\n   * @param _assetIn - The address of the from asset.\n   * @param _assetOut - The address of the to asset.\n   * @param _amountOut - The amount of the _assetOut to swap.\n   * @param _maxIn - The most you will supply to the swap.\n   * @return amountIn The amount of assetIn. Will be 0 if the swap was unsuccessful (slippage\n   * too high).\n   * @return assetOut The address of asset received.\n   */\n  function _swapAssetOut(\n    bytes32 _key,\n    address _assetIn,\n    address _assetOut,\n    uint256 _amountOut,\n    uint256 _maxIn\n  ) internal returns (uint256, address) {\n    AppStorage storage s = LibConnextStorage.connextStorage();\n\n    // Retrieve internal swap pool reference. If it doesn't exist, we'll resort to using an\n    // external stableswap below.\n    SwapUtils.Swap storage ipool = s.swapStorages[_key];\n\n    // Swap the asset to the proper local asset.\n    // NOTE: IFF slippage was too high to perform swap in either case: success = false, amountIn = 0\n    if (ipool.exists()) {\n      // Swap via the internal pool.\n      return (\n        ipool.swapInternalOut(\n          getTokenIndexFromStableSwapPool(_key, _assetIn),\n          getTokenIndexFromStableSwapPool(_key, _assetOut),\n          _amountOut,\n          _maxIn\n        ),\n        _assetOut\n      );\n    } else {\n      // Otherwise, swap via external stableswap pool.\n      // NOTE: This call will revert if the external stableswap pool doesn't exist.\n      IStableSwap pool = IStableSwap(getConfig(_key).adoptedToLocalExternalPools);\n      address poolAddress = address(pool);\n\n      // Perform the swap.\n      // Edge case with some tokens: Example USDT in ETH Mainnet, after the backUnbacked call\n      // there could be a remaining allowance if not the whole amount is pulled by aave.\n      // Later, if we try to increase the allowance it will fail. USDT demands if allowance\n      // is not 0, it has to be set to 0 first.\n      // Example: https://github.com/aave/aave-v3-periphery/blob/ca184e5278bcbc10d28c3dbbc604041d7cfac50b/contracts/adapters/paraswap/ParaSwapRepayAdapter.sol#L138-L140\n      IERC20Metadata assetIn = IERC20Metadata(_assetIn);\n\n      assetIn.safeApprove(poolAddress, 0);\n      assetIn.safeIncreaseAllowance(poolAddress, _maxIn);\n\n      uint256 out = pool.swapExactOut(\n        _amountOut,\n        _assetIn,\n        _assetOut,\n        _maxIn,\n        block.timestamp + Constants.DEFAULT_DEADLINE_EXTENSION\n      );\n\n      // Reset allowance\n      assetIn.safeApprove(poolAddress, 0);\n      return (out, _assetOut);\n    }\n  }\n\n  /**\n   * @notice Calculate amount of tokens you receive on a local bridge asset for the adopted asset\n   * using the stored stable swap\n   * @dev Will not use the stored stable swap if the asset passed in is the local asset\n   * @param _key - The hash of the canonical id and domain\n   * @param _asset - The address of the local asset to swap into the local asset\n   * @param _amount - The amount of the local asset to swap\n   * @return The amount of local asset received from swap\n   * @return The address of asset received post-swap\n   */\n  function calculateSwapFromLocalAssetIfNeeded(\n    bytes32 _key,\n    address _asset,\n    uint256 _amount\n  ) internal view returns (uint256, address) {\n    AppStorage storage s = LibConnextStorage.connextStorage();\n\n    // If the adopted asset is the local asset, no need to swap.\n    TokenConfig storage config = getConfig(_key);\n    address adopted = config.adopted;\n    if (adopted == _asset) {\n      return (_amount, adopted);\n    }\n\n    SwapUtils.Swap storage ipool = s.swapStorages[_key];\n\n    // Calculate the swap using the appropriate pool.\n    if (ipool.exists()) {\n      // Calculate with internal swap pool.\n      uint8 tokenIndexIn = getTokenIndexFromStableSwapPool(_key, _asset);\n      uint8 tokenIndexOut = getTokenIndexFromStableSwapPool(_key, adopted);\n      return (ipool.calculateSwap(tokenIndexIn, tokenIndexOut, _amount), adopted);\n    } else {\n      // Otherwise, try to calculate with external pool.\n      IStableSwap pool = IStableSwap(config.adoptedToLocalExternalPools);\n      // NOTE: This call will revert if no external pool exists.\n      return (pool.calculateSwapFromAddress(_asset, adopted, _amount), adopted);\n    }\n  }\n\n  /**\n   * @notice Calculate amount of tokens you receive of a local bridge asset for the adopted asset\n   * using the stored stable swap\n   * @dev Will not use the stored stable swap if the asset passed in is the local asset\n   * @param _asset - The address of the asset to swap into the local asset\n   * @param _amount - The amount of the asset to swap\n   * @return The amount of local asset received from swap\n   * @return The address of asset received post-swap\n   */\n  function calculateSwapToLocalAssetIfNeeded(\n    bytes32 _key,\n    address _asset,\n    address _local,\n    uint256 _amount\n  ) internal view returns (uint256, address) {\n    AppStorage storage s = LibConnextStorage.connextStorage();\n\n    // If the asset is the local asset, no swap needed\n    if (_asset == _local) {\n      return (_amount, _local);\n    }\n\n    SwapUtils.Swap storage ipool = s.swapStorages[_key];\n\n    // Calculate the swap using the appropriate pool.\n    if (ipool.exists()) {\n      // if internal swap pool exists\n      uint8 tokenIndexIn = getTokenIndexFromStableSwapPool(_key, _asset);\n      uint8 tokenIndexOut = getTokenIndexFromStableSwapPool(_key, _local);\n      return (ipool.calculateSwap(tokenIndexIn, tokenIndexOut, _amount), _local);\n    } else {\n      IStableSwap pool = IStableSwap(getConfig(_key).adoptedToLocalExternalPools);\n\n      return (pool.calculateSwapFromAddress(_asset, _local, _amount), _local);\n    }\n  }\n\n  // ============ Internal: Token ID Helpers ============\n\n  /**\n   * @notice Gets the canonical information for a given candidate.\n   * @dev First checks the `address(0)` convention, then checks if the asset given is the\n   * adopted asset, then calculates the local address.\n   * @return TokenId The canonical token ID information for the given