{"sources":{"contracts/LisUSD.sol":{"content":"// SPDX-License-Identifier: AGPL-3.0-or-later\n\n/// LisUSD.sol -- Lista Stablecoin ERC-20 Token\n\n// Copyright (C) 2017, 2018, 2019 dbrock, rain, mrchico\n\n// This program is free software: you can redistribute it and/or modify\n// it under the terms of the GNU Affero General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// This program is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU Affero General Public License for more details.\n//\n// You should have received a copy of the GNU Affero General Public License\n// along with this program.  If not, see <https://www.gnu.org/licenses/>.\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol\";\n\n// FIXME: This contract was altered compared to the production version.\n// It doesn't use LibNote anymore.\n// New deployments of this contract will need to include custom events (TO DO).\n\ncontract LisUSD is Initializable, IERC20MetadataUpgradeable {\n    enum Role {\n        NONE, // 0\n        MINTER, // 1\n        MANAGER, // 2\n        ADMIN // 3\n    }\n\n    // --- Auth ---\n    mapping (address => uint) public wards;\n    function rely(address guy, uint role) external onlyAdmin {\n        require(role > 0 && role <= uint(type(Role).max), \"LisUSD/invalid-role\");\n        wards[guy] = role;\n    }\n    function deny(address guy) external onlyAdmin { wards[guy] = 0; }\n\n    modifier onlyMinter() {\n        require(wards[msg.sender] == uint(Role.MINTER), \"LisUSD/not-authorized-minter\");\n        _;\n    }\n\n    modifier onlyManager() {\n        require(wards[msg.sender] == uint(Role.MANAGER), \"LisUSD/not-authorized-manager\");\n        _;\n    }\n\n    modifier onlyAdmin() {\n        require(wards[msg.sender] == uint(Role.ADMIN) || msg.sender == DEFAULT_ADMIN, \"LisUSD/not-authorized-admin\");\n        _;\n    }\n\n    // --- ERC20 Data ---\n    string  public constant name     = \"Lista USD\";\n    string  public symbol;\n    string  public constant version  = \"1\";\n    uint8   public constant decimals = 18;\n    uint256 public totalSupply;\n\n    mapping (address => uint)                      public balanceOf;\n    mapping (address => mapping (address => uint)) public allowance;\n    mapping (address => uint)                      public nonces;\n\n    uint256 public supplyCap;\n\n    event SupplyCapSet(uint256 oldCap, uint256 newCap);\n\n    // --- EIP712 niceties ---\n    bytes32 public DOMAIN_SEPARATOR;\n    // bytes32 public constant PERMIT_TYPEHASH = keccak256(\"Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)\");\n    bytes32 public constant PERMIT_TYPEHASH = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;\n\n    // default admin is TimeLock contract\n    address public constant DEFAULT_ADMIN = 0x07D274a68393E8b8a2CCf19A2ce4Ba3518735253;\n\n    function initialize(uint256 chainId_, string memory symbol_, uint256 supplyCap_) external initializer {\n        wards[msg.sender] = 1;\n        DOMAIN_SEPARATOR = keccak256(abi.encode(\n            keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"),\n            keccak256(bytes(name)),\n            keccak256(bytes(version)),\n            chainId_,\n            address(this)\n        ));\n        symbol = symbol_;\n        supplyCap = supplyCap_;\n    }\n\n    // --- Token ---\n    function transfer(address dst, uint wad) external returns (bool) {\n        return transferFrom(msg.sender, dst, wad);\n    }\n    function transferFrom(address src, address dst, uint wad) public returns (bool) {\n        require(src != address(0), \"LisUSD/transfer-from-zero-address\");\n        require(dst != address(0), \"LisUSD/transfer-to-zero-address\");\n        require(balanceOf[src] >= wad, \"LisUSD/insufficient-balance\");\n        if (src != msg.sender && allowance[src][msg.sender] != type(uint256).max) {\n            require(allowance[src][msg.sender] >= wad, \"LisUSD/insufficient-allowance\");\n            allowance[src][msg.sender] -= wad;\n        }\n        balanceOf[src] -= wad;\n        balanceOf[dst] += wad;\n        emit Transfer(src, dst, wad);\n        return true;\n    }\n    function mint(address usr, uint wad) external onlyMinter {\n        require(usr != address(0), \"LisUSD/mint-to-zero-address\");\n        require(totalSupply + wad <= supplyCap, \"LisUSD/cap-reached\");\n        balanceOf[usr] += wad;\n        totalSupply    += wad;\n        emit Transfer(address(0), usr, wad);\n    }\n    function burn(address usr, uint wad) external {\n        require(usr != address(0), \"LisUSD/burn-from-zero-address\");\n        require(balanceOf[usr] >= wad, \"LisUSD/insufficient-balance\");\n        if (usr != msg.sender && allowance[usr][msg.sender] != type(uint256).max) {\n            require(allowance[usr][msg.sender] >= wad, \"LisUSD/insufficient-allowance\");\n            allowance[usr][msg.sender] -= wad;\n        }\n        balanceOf[usr] -= wad;\n        totalSupply    -= wad;\n        emit Transfer(usr, address(0), wad);\n    }\n    function approve(address usr, uint wad) external returns (bool) {\n        _approve(msg.sender, usr, wad);\n\n        emit Approval(msg.sender, usr, wad);\n        return true;\n    }\n\n    // --- Alias ---\n    function push(address usr, uint wad) external {\n        transferFrom(msg.sender, usr, wad);\n    }\n    function pull(address usr, uint wad) external {\n        transferFrom(usr, msg.sender, wad);\n    }\n    function move(address src, address dst, uint wad) external {\n        transferFrom(src, dst, wad);\n    }\n\n    // --- Approve by signature ---\n    function permit(address holder, address spender, uint256 nonce, uint256 expiry,\n                    bool allowed, uint8 v, bytes32 r, bytes32 s) external\n    {\n        bytes32 digest =\n            keccak256(abi.encodePacked(\n                \"\\x19\\x01\",\n                DOMAIN_SEPARATOR,\n                keccak256(abi.encode(PERMIT_TYPEHASH,\n                                     holder,\n                                     spender,\n                                     nonce,\n                                     expiry,\n                                     allowed))\n        ));\n\n        require(holder != address(0), \"LisUSD/invalid-address-0\");\n        require(holder == ecrecover(digest, v, r, s), \"LisUSD/invalid-permit\");\n        require(expiry == 0 || block.timestamp <= expiry, \"LisUSD/permit-expired\");\n        require(nonce == nonces[holder]++, \"LisUSD/invalid-nonce\");\n        uint wad = allowed ? type(uint256).max : 0;\n        allowance[holder][spender] = wad;\n        emit Approval(holder, spender, wad);\n    }\n\n    function _approve(\n        address owner,\n        address spender,\n        uint256 amount\n    ) internal virtual {\n        require(owner != address(0), \"LisUSD/approve-from-zero-address\");\n        require(spender != address(0), \"LisUSD/approve-to-zero-address\");\n\n        allowance[owner][spender] = amount;\n        emit Approval(owner, spender, amount);\n    }\n\n    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {\n        address owner = msg.sender;\n        _approve(owner, spender, allowance[owner][spender] + addedValue);\n        return true;\n    }\n\n    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {\n        address owner = msg.sender;\n        uint256 currentAllowance = allowance[owner][spender];\n        require(currentAllowance >= subtractedValue, \"LisUSD/decreased-allowance-below-zero\");\n        unchecked {\n            _approve(owner, spender, currentAllowance - subtractedValue);\n        }\n        return true;\n    }\n\n    function setSupplyCap(uint256 wad) public onlyManager {\n        require(wad >= totalSupply, \"LisUSD/more-supply-than-cap\");\n        uint256 oldCap = supplyCap;\n        supplyCap = wad;\n        emit SupplyCapSet(oldCap, supplyCap);\n    }\n\n    function updateDomainSeparator(uint256 chainId_) external onlyManager {\n        DOMAIN_SEPARATOR = keccak256(abi.encode(\n            keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"),\n            keccak256(bytes(name)),\n            keccak256(bytes(version)),\n            chainId_,\n            address(this)\n        ));\n    }\n}\n"},"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * contract MyToken is ERC20Upgradeable {\n *     function initialize() initializer public {\n *         __ERC20_init(\"MyToken\", \"MTK\");\n *     }\n * }\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n *     function initializeV2() reinitializer(2) public {\n *         __ERC20Permit_init(\"MyToken\");\n *     }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n *     _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n    /**\n     * @dev Indicates that the contract has been initialized.\n     * @custom:oz-retyped-from bool\n     */\n    uint8 private _initialized;\n\n    /**\n     * @dev Indicates that the contract is in the process of being initialized.\n     */\n    bool private _initializing;\n\n    /**\n     * @dev Triggered when the contract has been initialized or reinitialized.\n     */\n    event Initialized(uint8 version);\n\n    /**\n     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n     * `onlyInitializing` functions can be used to initialize parent contracts.\n     *\n     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a\n     * constructor.\n     *\n     * Emits an {Initialized} event.\n     */\n    modifier initializer() {\n        bool isTopLevelCall = !_initializing;\n        require(\n            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),\n            \"Initializable: contract is already initialized\"\n        );\n        _initialized = 1;\n        if (isTopLevelCall) {\n            _initializing = true;\n        }\n        _;\n        if (isTopLevelCall) {\n            _initializing = false;\n            emit Initialized(1);\n        }\n    }\n\n    /**\n     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n     * used to initialize parent contracts.\n     *\n     * A reinitializer may be used after the original initialization step. This is essential to configure modules that\n     * are added through upgrades and that require initialization.\n     *\n     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`\n     * cannot be nested. If one is invoked in the context of another, execution will revert.\n     *\n     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n     * a contract, executing them in the right order is up to the developer or operator.\n     *\n     * WARNING: setting the version to 255 will prevent any future reinitialization.\n     *\n     * Emits an {Initialized} event.\n     */\n    modifier reinitializer(uint8 version) {\n        require(!_initializing && _initialized < version, \"Initializable: contract is already initialized\");\n        _initialized = version;\n        _initializing = true;\n        _;\n        _initializing = false;\n        emit Initialized(version);\n    }\n\n    /**\n     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n     * {initializer} and {reinitializer} modifiers, directly or indirectly.\n     */\n    modifier onlyInitializing() {\n        require(_initializing, \"Initializable: contract is not initializing\");\n        _;\n    }\n\n    /**\n     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n     * through proxies.\n     *\n     * Emits an {Initialized} event the first time it is successfully executed.\n     */\n    function _disableInitializers() internal virtual {\n        require(!_initializing, \"Initializable: contract is initializing\");\n        if (_initialized < type(uint8).max) {\n            _initialized = type(uint8).max;\n            emit Initialized(type(uint8).max);\n        }\n    }\n\n    /**\n     * @dev Returns the highest version that has been initialized. See {reinitializer}.\n     */\n    function _getInitializedVersion() internal view returns (uint8) {\n        return _initialized;\n    }\n\n    /**\n     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.\n     */\n    function _isInitializing() internal view returns (bool) {\n        return _initializing;\n    }\n}\n"},"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.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 IERC20Upgradeable {\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-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20Upgradeable.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20MetadataUpgradeable is IERC20Upgradeable {\n    /**\n     * @dev Returns the name of the token.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the symbol of the token.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the decimals places of the token.\n     */\n    function decimals() external view returns (uint8);\n}\n"},"@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\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 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(\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        (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 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"}},"matchId":"5630868","creationMatch":"exact_match","runtimeMatch":"exact_match","verifiedAt":"2024-11-12T07:01:36Z","match":"exact_match","chainId":"56","address":"0xF5bd9b192092517D60E90c9AF17b69b134c4d7f8"}