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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0x9a7e9c3b...e723819c2 The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
QAdmin
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts-upgradeable/access/AccessControlEnumerableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./interfaces/IFixedRateMarket.sol"; import "./interfaces/IQollateralManager.sol"; import "./interfaces/IFeeEmissionsQontroller.sol"; import "./interfaces/IStakingEmissionsQontroller.sol"; import "./interfaces/ITradingEmissionsQontroller.sol"; import "./interfaces/IQAdmin.sol"; import "./interfaces/IVeQoda.sol"; import "./libraries/QTypes.sol"; contract QAdmin is Initializable, AccessControlEnumerableUpgradeable, IQAdmin { /// @notice Identifier of the admin role bytes32 public constant ADMIN_ROLE = keccak256("ADMIN"); /// @notice Identifier of the market role bytes32 public constant MARKET_ROLE = keccak256("MARKET"); /// @notice Identifier of the role who allows accounts to mint tokens in QodaERC20 bytes32 public constant MINTER_ROLE = keccak256("MINTER"); /// @notice Identifier of the veToken role to do stake / unstake in StakingEmissionsQontroller bytes32 public constant VETOKEN_ROLE = keccak256("VETOKEN"); /// @notice Contract for managing user collateral IQollateralManager private _qollateralManager; /// @notice Contract for staking rewards IStakingEmissionsQontroller private _stakingEmissionsQontroller; /// @notice Contract for trading volume rewards ITradingEmissionsQontroller private _tradingEmissionsQontroller; /// @notice Contract for handling protocol fee charging and emission IFeeEmissionsQontroller private _feeEmissionsQontroller; /// @notice Contract for veQoda Token IVeQoda private _veQoda; /// @notice Iterable list of all `Asset` addresses address[] private _allAssets; /// @notice If collateral ratio falls below `_minCollateralRatio`, it is subject to liquidation /// Scaled by 1e8 uint private _minCollateralRatio; /// @notice When initially taking a loan, collateral ratio must be higher than this. /// `_initCollateralRatio` should always be higher than `_minCollateralRatio` /// Scaled by 1e8 uint private _initCollateralRatio; /// @notice The percent, ranging from 0% to 100%, of a liquidatable account's /// borrow that can be repaid in a single liquidate transaction. /// Scaled by 1e8 uint private _closeFactor; /// @notice Grace period (in seconds) after maturity before liquidators are allowed to /// liquidate underwater accounts. uint private _repaymentGracePeriod; /// @notice Grace period (in seconds) after maturity before lenders are allowed to /// redeem their qTokens for underlying tokens uint private _maturityGracePeriod; /// @notice Additional collateral given to liquidator as incentive to liquidate /// underwater accounts. For example, if liquidation incentive is 1.1, liquidator /// receives extra 10% of borrowers' collateral /// Scaled by 1e8 uint private _liquidationIncentive; /// @notice threshold in USD where protocol fee from each market will be transferred into `FeeEmissionsQontroller` /// once this amount is reached, scaled by 1e6 uint private _thresholdUSD; /// @notice Mapping for the annualized fee for loans in basis points for each `FixedRateMarket`. /// The fee is charged to both the lender and the borrower on any given deal. The fee rate will /// need to be scaled for loans that mature outside of 1 year. /// Scaled by 1e4 mapping(IFixedRateMarket => uint) private _protocolFee; /// @notice All enabled `Asset`s /// tokenAddress => Asset mapping(IERC20 => QTypes.Asset) private _assets; /// @notice Get the `FixedRateMarket` contract address for any given /// token and maturity time /// tokenAddress => maturity => fixedRateMarket mapping(IERC20 => mapping(uint => IFixedRateMarket)) private _fixedRateMarkets; /// @notice Mapping for the MToken market corresponding to any underlying ERC20 /// tokenAddress => mTokenAddress mapping(IERC20 => address) private _underlyingToMToken; /// @notice Mapping to determine whether a `FixedRateMarket` address /// is enabled or not /// fixedRateMarket => bool mapping(IFixedRateMarket => bool) private _enabledMarkets; /// @notice Mapping to determine the minimum quote size for any `FixedRateMarket` /// in PV terms, denominated in local currency /// fixedRateMarket => minQuoteSize mapping(IFixedRateMarket => uint) private _minQuoteSize; /// @notice Get the allowed limit in USD for each address to do uncollateralized borrow, scaled by 1e18 /// userAddress => creditLimit mapping(address => uint) private _creditLimit; /// @notice Constructor for upgradeable contracts function initialize(address admin) public initializer { // Initialize access control __AccessControlEnumerable_init(); _setupRole(ADMIN_ROLE, admin); _setupRole(MARKET_ROLE, admin); _setupRole(MINTER_ROLE, admin); _setupRole(VETOKEN_ROLE, admin); _setRoleAdmin(ADMIN_ROLE, ADMIN_ROLE); _setRoleAdmin(MARKET_ROLE, ADMIN_ROLE); _setRoleAdmin(MINTER_ROLE, ADMIN_ROLE); _setRoleAdmin(VETOKEN_ROLE, ADMIN_ROLE); // Set initial values for parameters _minCollateralRatio = 1e8; _initCollateralRatio = 1.1e8; _closeFactor = 0.5e8; _repaymentGracePeriod = 14400; _maturityGracePeriod = 28800; _liquidationIncentive = 1.1e8; } modifier onlyAdmin() { require(hasRole(ADMIN_ROLE, msg.sender), "QAdmin: only admin"); _; } modifier onlyMarket() { require(hasRole(MARKET_ROLE, msg.sender), "QAdmin: only market"); _; } modifier onlyVeToken() { require(hasRole(VETOKEN_ROLE, msg.sender), "QAdmin: only veToken"); _; } /** ADMIN FUNCTIONS **/ /// @notice Call upon initialization after deploying `QollateralManager` contract /// @param qollateralManagerAddress Address of `QollateralManager` deployment function _setQollateralManager(address qollateralManagerAddress) external onlyAdmin { // Initialize the value _qollateralManager = IQollateralManager(qollateralManagerAddress); // Emit the event emit SetQollateralManager(qollateralManagerAddress); } /// @notice Call upon initialization after deploying `StakingEmissionsQontroller` contract /// @param stakingEmissionsQontrollerAddress Address of `StakingEmissionsQontroller` deployment function _setStakingEmissionsQontroller(address stakingEmissionsQontrollerAddress) external onlyAdmin { // Initialize the value _stakingEmissionsQontroller = IStakingEmissionsQontroller(stakingEmissionsQontrollerAddress); // Emit the event emit SetStakingEmissionsQontroller(stakingEmissionsQontrollerAddress); } /// @notice Call upon initialization after deploying `TradingEmissionsQontroller` contract /// @param tradingEmissionsQontrollerAddress Address of `TradingEmissionsQontroller` deployment function _setTradingEmissionsQontroller(address tradingEmissionsQontrollerAddress) external onlyAdmin { // Initialize the value _tradingEmissionsQontroller = ITradingEmissionsQontroller(tradingEmissionsQontrollerAddress); // Emit the event emit SetTradingEmissionsQontroller(tradingEmissionsQontrollerAddress); } /// @notice Call upon initialization after deploying `FeeEmissionsQontroller` contract /// @param feeEmissionsQontrollerAddress Address of `FeeEmissionsQontroller` deployment function _setFeeEmissionsQontroller(address feeEmissionsQontrollerAddress) external onlyAdmin { _feeEmissionsQontroller = IFeeEmissionsQontroller(feeEmissionsQontrollerAddress); // Emit the event emit SetFeeEmissionsQontroller(feeEmissionsQontrollerAddress); } /// @notice Call upon initialization after deploying `veQoda` contract /// @param veQodaAddress Address of `veQoda` deployment function _setVeQoda(address veQodaAddress) external onlyAdmin { // Initialize the value _veQoda = IVeQoda(veQodaAddress); // Give `veQoda` the VETOKEN access control role _setupRole(VETOKEN_ROLE, veQodaAddress); // Emit the event emit SetVeQoda(veQodaAddress); } /// @notice Call to adjust allowed limit in USD for given address to do uncollateralized borrow /// Note that if credit limit is lowered, there might be chance where user's loan is subjected to /// instant liquidations. So it's crucial to notify the user in advance before attempting the action. /// @param accountAddress accoutn for credit limit adjustment /// @param creditLimit_ new credit limit in USD, scaled by 1e18 function _setCreditLimit(address accountAddress, uint creditLimit_) external onlyAdmin { // Emit the event emit SetCreditLimit(accountAddress, _creditLimit[accountAddress], creditLimit_); _creditLimit[accountAddress] = creditLimit_; } /// @notice Admin function for adding new Assets. An Asset must be added before it /// can be used as collateral or borrowed. Note: We can create functionality for /// allowing borrows of a token but not using it as collateral by setting /// `collateralFactor` to zero. /// @param token ERC20 token corresponding to the Asset /// @param isYieldBearing True if token bears interest (eg aToken, cToken, mToken, etc) /// @param underlying Address of the underlying token /// @param oracleFeed Chainlink price feed address /// @param collateralFactor_ 0.0 to 1.0 (scaled to 1e8) for discounting risky assets /// @param marketFactor_ 0.0 to 1.0 (scaled to 1e8) for premium on risky borrows function _addAsset( IERC20 token, bool isYieldBearing, address underlying, address oracleFeed, uint collateralFactor_, uint marketFactor_ ) external onlyAdmin { // Cannot add the same asset twice require(!_assets[token].isEnabled, "QAdmin: asset already exists"); // `collateralFactor` must be between 0 and 1 (scaled to 1e8) require( collateralFactor_ <= MAX_COLLATERAL_FACTOR(), "QAdmin: invalid collateral factor" ); // `marketFactor` must be between 0 and 1 (scaled to 1e8) require( marketFactor_ <= MAX_MARKET_FACTOR(), "QAdmin: invalid market factor" ); // Initialize the `Asset` with the given parameters, and no enabled // maturities to begin with uint[] memory maturities_; QTypes.Asset memory asset = QTypes.Asset( true, isYieldBearing, underlying, oracleFeed, collateralFactor_, marketFactor_, maturities_ ); _assets[token] = asset; _allAssets.push(address(token)); // Add yield-bearing assets to the (underlying => MToken) mapping if(isYieldBearing) { _underlyingToMToken[IERC20(underlying)]= address(token); } // Emit the event emit AddAsset(address(token), isYieldBearing, oracleFeed, collateralFactor_, marketFactor_); } /// @notice Adds a new `FixedRateMarket` contract into the internal mapping of /// whitelisted market addresses /// @param market New `FixedRateMarket` contract function _addFixedRateMarket(IFixedRateMarket market) external onlyAdmin { // Get athe values from the corresponding `FixedRateMarket` contract uint maturity = market.maturity(); IERC20 token = market.underlyingToken(); // Don't allow zero address require(address(token) != address(0), "QAdmin: invalid token address"); // Only allow `Markets` where the corresponding `Asset` is enabled require(_assets[token].isEnabled, "QAdmin: unsupported asset"); // Check that this market hasn't already been instantiated before require( address(_fixedRateMarkets[token][maturity]) == address(0), "QAdmin: market already exists" ); // Add the maturity as enabled to the corresponding Asset QTypes.Asset storage asset = _assets[token]; asset.maturities.push(maturity); // Add newly-created `FixedRateMarket` to the lookup list _fixedRateMarkets[token][maturity] = market; // Enable newly-created `FixedRateMarket` _enabledMarkets[market] = true; // Give `FixedRateMarket` the MARKET access control role _setupRole(MARKET_ROLE, address(market)); // Emit the event emit CreateFixedRateMarket( address(market), address(token), maturity ); } /// @notice Update the `collateralFactor` for a given `Asset` /// @param token ERC20 token corresponding to the Asset /// @param collateralFactor_ 0.0 to 1.0 (scaled to 1e8) for discounting risky assets function _setCollateralFactor( IERC20 token, uint collateralFactor_ ) external onlyAdmin { // Asset must already be enabled require(_assets[token].isEnabled, "QAdmin: asset not enabled"); // `collateralFactor` must be between 0 and 1 (scaled to 1e8) require( collateralFactor_ <= MAX_COLLATERAL_FACTOR(), "QAdmin: invalid collateral factor" ); // Look up the corresponding asset QTypes.Asset storage asset = _assets[token]; // Emit the event emit SetCollateralFactor(address(token), asset.collateralFactor, collateralFactor_); // Set `collateralFactor` asset.collateralFactor = collateralFactor_; } /// @notice Update the `marketFactor` for a given `Asset` /// @param token Address of the token corresponding to the Asset /// @param marketFactor_ 0.0 to 1.0 (scaled to 1e8) for discounting risky assets function _setMarketFactor( IERC20 token, uint marketFactor_ ) external onlyAdmin { // Asset must already be enabled require(_assets[token].isEnabled, "QAdmin: asset not enabled"); // `marketFactor` must be between 0 and 1 (scaled to 1e8) require( marketFactor_ <= MAX_MARKET_FACTOR(), "QAdmin: invalid asset factor" ); // Look up the corresponding asset QTypes.Asset storage asset = _assets[token]; // Emit the event emit SetMarketFactor(address(token), asset.marketFactor, marketFactor_); // Set `marketFactor` asset.marketFactor = marketFactor_; } /// @notice Set the minimum quote size for a particular `FixedRateMarket` /// @param market Address of the `FixedRateMarket` contract /// @param minQuoteSize_ Size in PV terms, local currency function _setMinQuoteSize(IFixedRateMarket market, uint minQuoteSize_) external onlyAdmin { // `FixedRateMarket` must already exist require( address(_fixedRateMarkets[market.underlyingToken()][market.maturity()]) != address(0), "QAdmin: market doesn't exist" ); // Emit the event emit SetMinQuoteSize(address(market), _minQuoteSize[market], minQuoteSize_); // Set `minQuoteSize` _minQuoteSize[market] = minQuoteSize_; } /// @notice Set the global initial collateral ratio /// @param initCollateralRatio_ New collateral ratio value function _setInitCollateralRatio(uint initCollateralRatio_) external onlyAdmin { // `_initCollateralRatio` cannot be below `_minCollateralRatio` require( initCollateralRatio_ >= _minCollateralRatio, "QAdmin: init collateral ratio must be greater than min collateral ratio" ); // Emit the event emit SetInitCollateralRatio(_initCollateralRatio, initCollateralRatio_); // Set `_initialCollateralRatio` to new value _initCollateralRatio = initCollateralRatio_; } /// @notice Set the global close factor /// @param closeFactor_ New close factor value function _setCloseFactor(uint closeFactor_) external onlyAdmin { // `_closeFactor` needs to be between 0 and 1 require(closeFactor_ <= MANTISSA_FACTORS(), "QAdmin: must be between 0 and 1"); // Emit the event emit SetCloseFactor(_closeFactor, closeFactor_); // Set `_closeFactor` to new value _closeFactor = closeFactor_; } /// @notice Set the global repayment grace period /// @param repaymentGracePeriod_ New repayment grace period function _setRepaymentGracePeriod(uint repaymentGracePeriod_) external onlyAdmin { // `_repaymentGracePeriod` needs to be <= 60*60*24 (ie 24 hours) require(repaymentGracePeriod_ <= 86400, "QAdmin: must be below 1 day"); // Emit the event emit SetRepaymentGracePeriod(_repaymentGracePeriod, repaymentGracePeriod_); // set `_repaymentGracePeriod` to new value _repaymentGracePeriod = repaymentGracePeriod_; } /// @notice Set the global maturity grace period /// @param maturityGracePeriod_ New maturity grace period function _setMaturityGracePeriod(uint maturityGracePeriod_) external onlyAdmin { // `_maturityGracePeriod` needs to be <= 60*60*24 (ie 24 hours) require(maturityGracePeriod_ <= 86400, "QAdmin: must be below 1 day"); // Emit the event emit SetMaturityGracePeriod(_maturityGracePeriod, maturityGracePeriod_); // set `_maturityGracePeriod` to new value _maturityGracePeriod = maturityGracePeriod_; } /// @notice Set the global liquidation incetive /// @param liquidationIncentive_ New liquidation incentive value function _setLiquidationIncentive(uint liquidationIncentive_) external onlyAdmin { // `_liquidationIncentive` needs to be greater than or equal to 1 require( liquidationIncentive_ >= MANTISSA_FACTORS(), "QAdmin: must be greater than or equal to 1" ); // Emit the event emit SetLiquidationIncentive(_liquidationIncentive, liquidationIncentive_); // Set `_liquidationIncentive` to new value _liquidationIncentive = liquidationIncentive_; } /// @notice Set the global annualized protocol fees for each market in basis points /// @param market Address of the `FixedRateMarket` contract /// @param protocolFee_ New protocol fee value (scaled to 1e4) function _setProtocolFee(IFixedRateMarket market, uint protocolFee_) external onlyAdmin { // Max annual protocol fees of 250 basis points require(protocolFee_ <= 250, "QAdmin: must be less than 2.5%"); // Min annual protocol fees of 1 basis point require(protocolFee_ >= 1, "QAdmin: must be greater than .01%"); // Emit the event emit SetProtocolFee(_protocolFee[market], protocolFee_); // Set `_protocolFee` to new value _protocolFee[market] = protocolFee_; } /// @notice Set the global threshold in USD for protocol fee transfer /// @param thresholdUSD_ New threshold USD value (scaled by 1e6) function _setThresholdUSD(uint thresholdUSD_) external { _thresholdUSD = thresholdUSD_; } /** VIEW FUNCTIONS **/ /// @notice Get the address of the `QollateralManager` contract function qollateralManager() external view returns(address) { return address(_qollateralManager); } /// @notice Get the address of the `QPriceOracle` contract function qPriceOracle() external view returns(address) { if(address(_qollateralManager) != address(0)){ return _qollateralManager.qPriceOracle(); }else { return address(0); } } /// @notice Get the address of the `StakingEmissionsQontroller` contract function stakingEmissionsQontroller() external view returns(address) { return address(_stakingEmissionsQontroller); } /// @notice Get the address of the `TradingEmissionsQontroller` contract function tradingEmissionsQontroller() external view returns(address) { return address(_tradingEmissionsQontroller); } /// @notice Get the address of the `FeeEmissionsQontroller` contract function feeEmissionsQontroller() external view returns(address) { return address(_feeEmissionsQontroller); } /// @notice Get the address of the `veQoda` contract function veQoda() external view returns(address) { return address(_veQoda); } /// @notice Get the credit limit with associated address, scaled by 1e6 function creditLimit(address accountAddress) external view returns(uint) { return _creditLimit[accountAddress]; } /// @notice Gets the `Asset` mapped to the address of a ERC20 token /// @param token ERC20 token /// @return QTypes.Asset Associated `Asset` function assets(IERC20 token) external view returns(QTypes.Asset memory) { return _assets[token]; } /// @notice Get all enabled `Asset`s /// @return address[] iterable list of enabled `Asset`s function allAssets() external view returns(address[] memory) { return _allAssets; } /// @notice Gets the `CollateralFactor` associated with a ERC20 token /// @param token ERC20 token /// @return uint Collateral Factor, scaled by 1e8 function collateralFactor(IERC20 token) external view returns(uint) { return _assets[token].collateralFactor; } /// @notice Gets the `MarketFactor` associated with a ERC20 token /// @param token ERC20 token /// @return uint Market Factor, scaled by 1e8 function marketFactor(IERC20 token) external view returns(uint) { return _assets[token].marketFactor; } /// @notice Gets the `maturities` associated with a ERC20 token /// @param token ERC20 token /// @return uint[] array of UNIX timestamps (in seconds) of the maturity dates function maturities(IERC20 token) external view returns(uint[] memory) { return _assets[token].maturities; } /// @notice Get the MToken market corresponding to any underlying ERC20 /// tokenAddress => mTokenAddress function underlyingToMToken(IERC20 token) external view returns(address) { return _underlyingToMToken[token]; } /// @notice Gets the address of the `FixedRateMarket` contract /// @param token ERC20 token /// @param maturity UNIX timestamp of the maturity date /// @return IFixedRateMarket Address of `FixedRateMarket` contract function fixedRateMarkets( IERC20 token, uint maturity ) external view returns(IFixedRateMarket){ return _fixedRateMarkets[token][maturity]; } /// @notice Check whether an address is a valid FixedRateMarket address. /// Can be used for checks for inter-contract admin/restricted function call. /// @param market `FixedRateMarket` contract /// @return bool True if valid false otherwise function isMarketEnabled(IFixedRateMarket market) external view returns(bool){ return _enabledMarkets[market]; } function minQuoteSize(IFixedRateMarket market) external view returns(uint) { return _minQuoteSize[market]; } function minCollateralRatio() public view returns(uint){ return _minCollateralRatio; } function initCollateralRatio() public view returns(uint){ return _initCollateralRatio; } function closeFactor() public view returns(uint){ return _closeFactor; } function repaymentGracePeriod() public view returns(uint){ return _repaymentGracePeriod; } function maturityGracePeriod() public view returns(uint){ return _maturityGracePeriod; } function liquidationIncentive() public view returns(uint){ return _liquidationIncentive; } /// @notice Annualized protocol fee in basis points, scaled by 1e4 function protocolFee(IFixedRateMarket market) public view returns(uint){ return _protocolFee[market]; } /// @notice threshold in USD where protocol fee from each market will be transferred into `FeeEmissionsQontroller` /// once this amount is reached, scaled by 1e6 function thresholdUSD() external view returns(uint) { return _thresholdUSD; } /// @notice 2**256 - 1 function UINT_MAX() public pure returns(uint){ return type(uint).max; } /// @notice Generic mantissa corresponding to ETH decimals function MANTISSA_DEFAULT() public pure returns(uint){ return 1e18; } /// @notice Mantissa for USD function MANTISSA_USD() public pure returns(uint){ return 1e18; } /// @notice Mantissa for collateral ratio function MANTISSA_COLLATERAL_RATIO() public pure returns(uint){ return 1e8; } /// @notice `assetFactor` and `marketFactor` have up to 8 decimal places precision function MANTISSA_FACTORS() public pure returns(uint){ return 1e8; } /// @notice Basis points have 4 decimal place precision function MANTISSA_BPS() public pure returns(uint){ return 1e4; } /// @notice Staked Qoda has 6 decimal place precision function MANTISSA_STAKING() public pure returns(uint) { return 1e6; } /// @notice `collateralFactor` cannot be above 1.0 function MAX_COLLATERAL_FACTOR() public pure returns(uint){ return 1e8; } /// @notice `marketFactor` cannot be above 1.0 function MAX_MARKET_FACTOR() public pure returns(uint){ return 1e8; } /// @notice version number of this contract, will be bumped upon contractual change function VERSION_NUMBER() public pure returns(string memory){ return "0.2.1"; } }
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IFixedRateMarket.sol"; interface IQollateralManager { /// @notice Emitted when an account deposits collateral into the contract event DepositCollateral(address indexed account, address tokenAddress, uint amount); /// @notice Emitted when an account withdraws collateral from the contract event WithdrawCollateral(address indexed account, address tokenAddress, uint amount); /// @notice Emitted when an account first interacts with the `Market` event AddAccountMarket(address indexed account, address indexed market); /// @notice Emitted when collateral is transferred from one account to another event TransferCollateral(address indexed tokenAddress, address indexed from, address indexed to, uint amount); /// @notice Constructor for upgradeable contracts /// @param qAdminAddress_ Address of the `QAdmin` contract /// @param qPriceOracleAddress_ Address of the `QPriceOracle` contract function initialize(address qAdminAddress_, address qPriceOracleAddress_) external; /** ADMIN/RESTRICTED FUNCTIONS **/ /// @notice Record when an account has either borrowed or lent into a /// `FixedRateMarket`. This is necessary because we need to iterate /// across all markets that an account has borrowed/lent to to calculate their /// `borrowValue`. Only the `FixedRateMarket` contract itself may call /// this function /// @param account User account /// @param market Address of the `FixedRateMarket` market function _addAccountMarket(address account, IFixedRateMarket market) external; /// @notice Transfer collateral balances from one account to another. Only /// `FixedRateMarket` contracts can call this restricted function. This is used /// for when a liquidator liquidates an account. /// @param token ERC20 token /// @param from Sender address /// @param to Recipient address /// @param amount Amount to transfer function _transferCollateral(IERC20 token, address from, address to, uint amount) external; /** USER INTERFACE **/ /// @notice Users call this to deposit collateral to fund their borrows /// @param token ERC20 token /// @param amount Amount to deposit (in local ccy) /// @return uint New collateral balance function depositCollateral(IERC20 token, uint amount) external returns(uint); /// @notice Users call this to deposit collateral to fund their borrows, where their /// collateral is automatically wrapped into MTokens for convenience so users can /// automatically earn interest on their collateral. /// @param underlying Underlying ERC20 token /// @param amount Amount to deposit (in underlying local currency) /// @return uint New collateral balance (in MToken balance) function depositCollateralWithMTokenWrap(IERC20 underlying, uint amount) external returns(uint); /// @notice Users call this to withdraw collateral /// @param token ERC20 token /// @param amount Amount to withdraw (in local ccy) /// @return uint New collateral balance function withdrawCollateral(IERC20 token, uint amount) external returns(uint); /// @notice Users call this to withdraw mToken collateral, where their /// collateral is automatically unwrapped into underlying tokens for /// convenience. /// @param mTokenAddress Yield-bearing token address /// @param amount Amount to withdraw (in mToken local currency) /// @return uint New collateral balance (in MToken balance) function withdrawCollateralWithMTokenUnwrap( address mTokenAddress, uint amount ) external returns(uint); /** VIEW FUNCTIONS **/ /// @notice Get the address of the `QAdmin` contract /// @return address Address of `QAdmin` contract function qAdmin() external view returns(address); /// @notice Get the address of the `QPriceOracle` contract /// @return address Address of `QPriceOracle` contract function qPriceOracle() external view returns(address); /// @notice Get all enabled `Asset`s /// @return address[] iterable list of enabled `Asset`s function allAssets() external view returns(address[] memory); /// @notice Gets the `CollateralFactor` associated with a ERC20 token /// @param token ERC20 token /// @return uint Collateral Factor, scaled by 1e8 function collateralFactor(IERC20 token) external view returns(uint); /// @notice Gets the `MarketFactor` associated with a ERC20 token /// @param token ERC20 token /// @return uint Market Factor, scaled by 1e8 function marketFactor(IERC20 token) external view returns(uint); /// @notice Return what the collateral ratio for an account would be /// with a hypothetical collateral withdraw/deposit and/or token borrow/lend. /// The collateral ratio is calculated as: /// (`virtualCollateralValue` / `virtualBorrowValue`) /// If the returned value falls below 1e8, the account can be liquidated /// @param account User account /// @param hypotheticalToken Currency of hypothetical withdraw / deposit /// @param withdrawAmount Amount of hypothetical withdraw in local currency /// @param depositAmount Amount of hypothetical deposit in local currency /// @param hypotheticalMarket Market of hypothetical borrow /// @param borrowAmount Amount of hypothetical borrow in local ccy /// @param lendAmount Amount of hypothetical lend in local ccy /// @return uint Hypothetical collateral ratio function hypotheticalCollateralRatio( address account, IERC20 hypotheticalToken, uint withdrawAmount, uint depositAmount, IFixedRateMarket hypotheticalMarket, uint borrowAmount, uint lendAmount ) external view returns(uint); /// @notice Return the current collateral ratio for an account. /// The collateral ratio is calculated as: /// (`virtualCollateralValue` / `virtualBorrowValue`) /// If the returned value falls below 1e8, the account can be liquidated /// @param account User account /// @return uint Collateral ratio function collateralRatio(address account) external view returns(uint); /// @notice Get the `collateralFactor` weighted value (in USD) of all the /// collateral deposited for an account /// @param account Account to query /// @return uint Total value of account in USD, scaled to 1e18 function virtualCollateralValue(address account) external view returns(uint); /// @notice Get the `collateralFactor` weighted value (in USD) for the tokens /// deposited for an account /// @param account Account to query /// @param token ERC20 token /// @return uint Value of token collateral of account in USD, scaled to 1e18 function virtualCollateralValueByToken( address account, IERC20 token ) external view returns(uint); /// @notice Get the `marketFactor` weighted net borrows (i.e. borrows - lends) /// in USD summed across all `Market`s participated in by the user /// @param account Account to query /// @return uint Borrow value of account in USD, scaled to 1e18 function virtualBorrowValue(address account) external view returns(uint); /// @notice Get the `marketFactor` weighted net borrows (i.e. borrows - lends) /// in USD for a particular `Market` /// @param account Account to query /// @param market `FixedRateMarket` contract /// @return uint Borrow value of account in USD, scaled to 1e18 function virtualBorrowValueByMarket( address account, IFixedRateMarket market ) external view returns(uint); /// @notice Return what the weighted total borrow value for an account would be with a hypothetical borrow /// @param account Account to query /// @param hypotheticalMarket Market of hypothetical borrow / lend /// @param borrowAmount Amount of hypothetical borrow in local ccy /// @param lendAmount Amount of hypothetical lend in local ccy /// @return uint Borrow value of account in USD, scaled to 1e18 function hypotheticalVirtualBorrowValue( address account, IFixedRateMarket hypotheticalMarket, uint borrowAmount, uint lendAmount ) external view returns(uint); /// @notice Get the unweighted value (in USD) of all the collateral deposited /// for an account /// @param account Account to query /// @return uint Total value of account in USD, scaled to 1e18 function realCollateralValue(address account) external view returns(uint); /// @notice Get the unweighted value (in USD) of the tokens deposited /// for an account /// @param account Account to query /// @param token ERC20 token /// @return uint Value of token collateral of account in USD, scaled to 1e18 function realCollateralValueByToken( address account, IERC20 token ) external view returns(uint); /// @notice Get the unweighted current net value borrowed (i.e. borrows - lends) /// in USD summed across all `Market`s participated in by the user /// @param account Account to query /// @return uint Borrow value of account in USD, scaled to 1e18 function realBorrowValue(address account) external view returns(uint); /// @notice Get the unweighted current net value borrowed (i.e. borrows - lends) /// in USD for a particular `Market` /// @param account Account to query /// @param market `FixedRateMarket` contract /// @return uint Borrow value of account in USD, scaled to 1e18 function realBorrowValueByMarket( address account, IFixedRateMarket market ) external view returns(uint); /// @notice Get the minimum collateral ratio. Scaled by 1e8. /// @return uint Minimum collateral ratio function minCollateralRatio() external view returns(uint); /// @notice Get the initial collateral ratio. Scaled by 1e8 /// @return uint Initial collateral ratio function initCollateralRatio() external view returns(uint); /// @notice Get the close factor. Scaled by 1e8 /// @return uint Close factor function closeFactor() external view returns(uint); /// @notice Get the liquidation incentive. Scaled by 1e8 /// @return uint Liquidation incentive function liquidationIncentive() external view returns(uint); /// @notice Use this for quick lookups of collateral balances by asset /// @param account User account /// @param token ERC20 token /// @return uint Balance in local function collateralBalance(address account, IERC20 token) external view returns(uint); /// @notice Get iterable list of collateral addresses which an account has nonzero balance. /// @param account User account /// @return address[] Iterable list of ERC20 token addresses function iterableCollateralAddresses(address account) external view returns(IERC20[] memory); /// @notice Quick lookup of whether an account has a particular collateral /// @param account User account /// @param token ERC20 token addresses /// @return bool True if account has collateralized with given ERC20 token, false otherwise function accountCollateral(address account, IERC20 token) external view returns(bool); /// @notice Get iterable list of all Markets which an account has participated /// @param account User account /// @return address[] Iterable list of `FixedRateLoanMarket` contract addresses function iterableAccountMarkets(address account) external view returns(IFixedRateMarket[] memory); /// @notice Quick lookup of whether an account has participated in a Market /// @param account User account /// @param market`FixedRateLoanMarket` contract /// @return bool True if participated, false otherwise function accountMarkets(address account, IFixedRateMarket market) external view returns(bool); /// @notice Converts any local value into its value in USD using oracle feed price /// @param token ERC20 token /// @param amountLocal Amount denominated in terms of the ERC20 token /// @return uint Amount in USD, scaled to 1e18 function localToUSD(IERC20 token, uint amountLocal) external view returns(uint); /// @notice Converts any value in USD into its value in local using oracle feed price /// @param token ERC20 token /// @param valueUSD Amount in USD /// @return uint Amount denominated in terms of the ERC20 token function USDToLocal(IERC20 token, uint valueUSD) external view returns(uint); }
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts-upgradeable/access/IAccessControlUpgradeable.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IFixedRateMarket.sol"; import "../libraries/QTypes.sol"; interface IQAdmin is IAccessControlUpgradeable { /// @notice Emitted when a new FixedRateMarket is deployed event CreateFixedRateMarket(address indexed marketAddress, address indexed tokenAddress, uint maturity); /// @notice Emitted when a new `Asset` is added event AddAsset( address indexed tokenAddress, bool isYieldBearing, address oracleFeed, uint collateralFactor, uint marketFactor); /// @notice Emitted when setting `_qollateralManager` event SetQollateralManager(address qollateralManagerAddress); /// @notice Emitted when setting `_stakingEmissionsQontroller` event SetStakingEmissionsQontroller(address stakingEmissionsQontrollerAddress); /// @notice Emitted when setting `_tradingEmissionsQontroller` event SetTradingEmissionsQontroller(address tradingEmissionsQontrollerAddress); /// @notice Emitted when setting `_feeEmissionsQontroller` event SetFeeEmissionsQontroller(address feeEmissionsQontrollerAddress); /// @notice Emitted when setting `_veQoda` event SetVeQoda(address veQodaAddress); /// @notice Emitted when setting `collateralFactor` event SetCollateralFactor(address indexed tokenAddress, uint oldValue, uint newValue); /// @notice Emitted when setting `marketFactor` event SetMarketFactor(address indexed tokenAddress, uint oldValue, uint newValue); /// @notice Emitted when setting `minQuoteSize` event SetMinQuoteSize(address indexed tokenAddress, uint oldValue, uint newValue); /// @notice Emitted when `_initCollateralRatio` gets updated event SetInitCollateralRatio(uint oldValue, uint newValue); /// @notice Emitted when `_closeFactor` gets updated event SetCloseFactor(uint oldValue, uint newValue); /// @notice Emitted when `_repaymentGracePeriod` gets updated event SetRepaymentGracePeriod(uint oldValue, uint newValue); /// @notice Emitted when `_maturityGracePeriod` gets updated event SetMaturityGracePeriod(uint oldValue, uint newValue); /// @notice Emitted when `_liquidationIncentive` gets updated event SetLiquidationIncentive(uint oldValue, uint newValue); /// @notice Emitted when `_protocolFee` gets updated event SetProtocolFee(uint oldValue, uint newValue); /// @notice Emitted when `creditLimit` gets updated event SetCreditLimit(address accountAddress, uint oldValue, uint newValue); /** ADMIN FUNCTIONS **/ /// @notice Call upon initialization after deploying `QollateralManager` contract /// @param qollateralManagerAddress Address of `QollateralManager` deployment function _setQollateralManager(address qollateralManagerAddress) external; /// @notice Call upon initialization after deploying `StakingEmissionsQontroller` contract /// @param stakingEmissionsQontrollerAddress Address of `StakingEmissionsQontroller` deployment function _setStakingEmissionsQontroller(address stakingEmissionsQontrollerAddress) external; /// @notice Call upon initialization after deploying `TradingEmissionsQontroller` contract /// @param tradingEmissionsQontrollerAddress Address of `TradingEmissionsQontroller` deployment function _setTradingEmissionsQontroller(address tradingEmissionsQontrollerAddress) external; /// @notice Call upon initialization after deploying `FeeEmissionsQontroller` contract /// @param feeEmissionsQontrollerAddress Address of `FeeEmissionsQontroller` deployment function _setFeeEmissionsQontroller(address feeEmissionsQontrollerAddress) external; /// @notice Call upon initialization after deploying `veQoda` contract /// @param veQodaAddress Address of `veQoda` deployment function _setVeQoda(address veQodaAddress) external; /// @notice Call to adjust allowed limit in USD for given address to do uncollateralized borrow /// Note that if credit limit is lowered, there might be chance where user's loan is subjected to /// instant liquidations. So it's crucial to notify the user in advance before attempting the action. /// @param accountAddress accoutn for credit limit adjustment /// @param creditLimit_ new credit limit in USD, scaled by 1e18 function _setCreditLimit(address accountAddress, uint creditLimit_) external; /// @notice Admin function for adding new Assets. An Asset must be added before it /// can be used as collateral or borrowed. Note: We can create functionality for /// allowing borrows of a token but not using it as collateral by setting /// `collateralFactor` to zero. /// @param token ERC20 token corresponding to the Asset /// @param isYieldBearing True if token bears interest (eg aToken, cToken, mToken, etc) /// @param underlying Address of the underlying token /// @param oracleFeed Chainlink price feed address /// @param collateralFactor 0.0 to 1.0 (scaled to 1e8) for discounting risky assets /// @param marketFactor 0.0 to 1.0 (scaled to 1e8) for premium on risky borrows function _addAsset( IERC20 token, bool isYieldBearing, address underlying, address oracleFeed, uint collateralFactor, uint marketFactor ) external; /// @notice Adds a new `FixedRateMarket` contract into the internal mapping of /// whitelisted market addresses /// @param market New `FixedRateMarket` contract function _addFixedRateMarket(IFixedRateMarket market) external; /// @notice Update the `collateralFactor` for a given `Asset` /// @param token ERC20 token corresponding to the Asset /// @param collateralFactor 0.0 to 1.0 (scaled to 1e8) for discounting risky assets function _setCollateralFactor(IERC20 token, uint collateralFactor) external; /// @notice Update the `marketFactor` for a given `Asset` /// @param token Address of the token corresponding to the Asset /// @param marketFactor 0.0 to 1.0 (scaled to 1e8) for discounting risky assets function _setMarketFactor(IERC20 token, uint marketFactor) external; /// @notice Set the minimum quote size for a particular `FixedRateMarket` /// @param market Address of the `FixedRateMarket` contract /// @param minQuoteSize_ Size in PV terms, local currency function _setMinQuoteSize(IFixedRateMarket market, uint minQuoteSize_) external; /// @notice Set the global initial collateral ratio /// @param initCollateralRatio_ New collateral ratio value function _setInitCollateralRatio(uint initCollateralRatio_) external; /// @notice Set the global close factor /// @param closeFactor_ New close factor value function _setCloseFactor(uint closeFactor_) external; /// @notice Set the global repayment grace period /// @param repaymentGracePeriod_ New repayment grace period function _setRepaymentGracePeriod(uint repaymentGracePeriod_) external; /// @notice Set the global maturity grace period /// @param maturityGracePeriod_ New maturity grace period function _setMaturityGracePeriod(uint maturityGracePeriod_) external; /// @notice Set the global liquidation incetive /// @param liquidationIncentive_ New liquidation incentive value function _setLiquidationIncentive(uint liquidationIncentive_) external; /// @notice Set the global annualized protocol fees for each market in basis points /// @param market Address of the `FixedRateMarket` contract /// @param protocolFee_ New protocol fee value (scaled to 1e4) function _setProtocolFee(IFixedRateMarket market, uint protocolFee_) external; /// @notice Set the global threshold in USD for protocol fee transfer /// @param thresholdUSD_ New threshold USD value (scaled by 1e6) function _setThresholdUSD(uint thresholdUSD_) external; /** VIEW FUNCTIONS **/ function ADMIN_ROLE() external view returns(bytes32); function MARKET_ROLE() external view returns(bytes32); function MINTER_ROLE() external view returns(bytes32); function VETOKEN_ROLE() external view returns(bytes32); /// @notice Get the address of the `QollateralManager` contract function qollateralManager() external view returns(address); /// @notice Get the address of the `QPriceOracle` contract function qPriceOracle() external view returns(address); /// @notice Get the address of the `StakingEmissionsQontroller` contract function stakingEmissionsQontroller() external view returns(address); /// @notice Get the address of the `TradingEmissionsQontroller` contract function tradingEmissionsQontroller() external view returns(address); /// @notice Get the address of the `FeeEmissionsQontroller` contract function feeEmissionsQontroller() external view returns(address); /// @notice Get the address of the `veQoda` contract function veQoda() external view returns(address); /// @notice Get the credit limit with associated address, scaled by 1e18 function creditLimit(address accountAddress) external view returns(uint); /// @notice Gets the `Asset` mapped to the address of a ERC20 token /// @param token ERC20 token /// @return QTypes.Asset Associated `Asset` function assets(IERC20 token) external view returns(QTypes.Asset memory); /// @notice Get all enabled `Asset`s /// @return address[] iterable list of enabled `Asset`s function allAssets() external view returns(address[] memory); /// @notice Gets the `CollateralFactor` associated with a ERC20 token /// @param token ERC20 token /// @return uint Collateral Factor, scaled by 1e8 function collateralFactor(IERC20 token) external view returns(uint); /// @notice Gets the `MarketFactor` associated with a ERC20 token /// @param token ERC20 token /// @return uint Market Factor, scaled by 1e8 function marketFactor(IERC20 token) external view returns(uint); /// @notice Gets the `maturities` associated with a ERC20 token /// @param token ERC20 token /// @return uint[] array of UNIX timestamps (in seconds) of the maturity dates function maturities(IERC20 token) external view returns(uint[] memory); /// @notice Get the MToken market corresponding to any underlying ERC20 /// tokenAddress => mTokenAddress function underlyingToMToken(IERC20 token) external view returns(address); /// @notice Gets the address of the `FixedRateMarket` contract /// @param token ERC20 token /// @param maturity UNIX timestamp of the maturity date /// @return IFixedRateMarket Address of `FixedRateMarket` contract function fixedRateMarkets(IERC20 token, uint maturity) external view returns(IFixedRateMarket); /// @notice Check whether an address is a valid FixedRateMarket address. /// Can be used for checks for inter-contract admin/restricted function call. /// @param market `FixedRateMarket` contract /// @return bool True if valid false otherwise function isMarketEnabled(IFixedRateMarket market) external view returns(bool); function minQuoteSize(IFixedRateMarket market) external view returns(uint); function minCollateralRatio() external view returns(uint); function initCollateralRatio() external view returns(uint); function closeFactor() external view returns(uint); function repaymentGracePeriod() external view returns(uint); function maturityGracePeriod() external view returns(uint); function liquidationIncentive() external view returns(uint); /// @notice Annualized protocol fee in basis points, scaled by 1e4 function protocolFee(IFixedRateMarket market) external view returns(uint); /// @notice threshold in USD where protocol fee from each market will be transferred into `FeeEmissionsQontroller` /// once this amount is reached, scaled by 1e6 function thresholdUSD() external view returns(uint); /// @notice 2**256 - 1 function UINT_MAX() external pure returns(uint); /// @notice Generic mantissa corresponding to ETH decimals function MANTISSA_DEFAULT() external pure returns(uint); /// @notice Mantissa for USD function MANTISSA_USD() external pure returns(uint); /// @notice Mantissa for collateral ratio function MANTISSA_COLLATERAL_RATIO() external pure returns(uint); /// @notice `assetFactor` and `marketFactor` have up to 8 decimal places precision function MANTISSA_FACTORS() external pure returns(uint); /// @notice Basis points have 4 decimal place precision function MANTISSA_BPS() external pure returns(uint); /// @notice Staked Qoda has 6 decimal place precision function MANTISSA_STAKING() external pure returns(uint); /// @notice `collateralFactor` cannot be above 1.0 function MAX_COLLATERAL_FACTOR() external pure returns(uint); /// @notice `marketFactor` cannot be above 1.0 function MAX_MARKET_FACTOR() external pure returns(uint); /// @notice version number of this contract, will be bumped upon contractual change function VERSION_NUMBER() external pure returns(string memory); }
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IFixedRateMarket is IERC20Upgradeable, IERC20MetadataUpgradeable { /// @notice Emitted when a borrower repays borrow. /// Boolean flag `withQTokens`= true if repaid via qTokens, false otherwise. event RepayBorrow(address indexed borrower, uint amount, bool withQTokens); /// @notice Emitted when a borrower is liquidated event LiquidateBorrow( address indexed borrower, address indexed liquidator, uint amount, address collateralTokenAddress, uint reward ); /// @notice Emitted when a borrower and lender are matched for a fixed rate loan event FixedRateLoan( bytes32 indexed quoteId, address indexed borrower, address indexed lender, uint amountPV, uint amountFV, uint feeIncurred); /// @notice Emitted when an account cancels their Quote event CancelQuote(address indexed account, uint nonce); /// @notice Emitted when an account redeems their qTokens event RedeemQTokens(address indexed account, uint amount); /** USER INTERFACE **/ /// @notice Execute against Quote as a borrower. /// @param amountPV Amount that the borrower wants to execute as PV /// @param lender Account of the lender /// @param quoteType *Lender's* type preference, 0 for PV+APR, 1 for FV+APR /// @param quoteExpiryTime Timestamp after which the quote is no longer valid /// @param APR In decimal form scaled by 1e4 (ex. 10.52% = 1052) /// @param cashflow Can be PV or FV depending on `quoteType` /// @param nonce For uniqueness of signature /// @param signature signed hash of the Quote message /// @return uint, uint Loan amount (`amountPV`) and repayment amount (`amountFV`) function borrow( uint amountPV, address lender, uint8 quoteType, uint64 quoteExpiryTime, uint64 APR, uint cashflow, uint nonce, bytes memory signature ) external returns(uint, uint); /// @notice Execute against Quote as a lender. /// @param amountPV Amount that the lender wants to execute as PV /// @param borrower Account of the borrower /// @param quoteType *Borrower's* type preference, 0 for PV+APR, 1 for FV+APR /// @param quoteExpiryTime Timestamp after which the quote is no longer valid /// @param APR In decimal form scaled by 1e4 (ex. 10.52% = 1052) /// @param cashflow Can be PV or FV depending on `quoteType` /// @param nonce For uniqueness of signature /// @param signature signed hash of the Quote message /// @return uint, uint Loan amount (`amountPV`) and repayment amount (`amountFV`) function lend( uint amountPV, address borrower, uint8 quoteType, uint64 quoteExpiryTime, uint64 APR, uint cashflow, uint nonce, bytes memory signature ) external returns(uint, uint); /// @notice Borrower will make repayments to the smart contract, which /// holds the value in escrow until maturity to release to lenders. /// @param amount Amount to repay /// @return uint Remaining account borrow amount function repayBorrow(uint amount) external returns(uint); /// @notice By setting the nonce in `_voidNonces` to true, this is equivalent to /// invalidating the Quote (i.e. cancelling the quote) /// param nonce Nonce of the Quote to be cancelled function cancelQuote(uint nonce) external; /// @notice This function allows net lenders to redeem qTokens for the /// underlying token. Redemptions may only be permitted after loan maturity /// plus `_maturityGracePeriod`. The public interface redeems specified amount /// of qToken from existing balance. /// @param amount Amount of qTokens to redeem /// @return uint Amount of qTokens redeemed function redeemQTokensByRatio(uint amount) external returns(uint); /// @notice This function allows net lenders to redeem qTokens for the /// underlying token. Redemptions may only be permitted after loan maturity /// plus `_maturityGracePeriod`. The public interface redeems the entire qToken /// balance. /// @return uint Amount of qTokens redeemed function redeemAllQTokensByRatio() external returns(uint); /// @notice Get amount of qTokens user can redeem based on current loan repayment ratio /// @return uint amount of qTokens user can redeem function redeemableQTokens() external view returns(uint); /// @notice If an account is in danger of being undercollateralized (i.e. /// collateralRatio < 1.0) or has not repaid past maturity plus `_repaymentGracePeriod`, /// any user may liquidate that account by paying back the loan on behalf of the account. /// In return, the liquidator receives collateral belonging to the account equal in value to /// the repayment amount in USD plus the liquidation incentive amount as a bonus. /// @param borrower Address of account that is undercollateralized /// @param amount Amount to repay on behalf of account /// @param collateralToken Liquidator's choice of which currency to be paid in function liquidateBorrow( address borrower, uint amount, IERC20 collateralToken ) external; /** VIEW FUNCTIONS **/ /// @notice Get the address of the `QollateralManager` /// @return address function qollateralManager() external view returns(address); /// @notice Get the address of the ERC20 token which the loan will be denominated /// @return IERC20 function underlyingToken() external view returns(IERC20); /// @notice Get the UNIX timestamp (in seconds) when the market matures /// @return uint function maturity() external view returns(uint); /// @notice Get the minimum quote size for this market /// @return uint Minimum quote size, in PV terms, local currency function minQuoteSize() external view returns(uint); /// @notice True if a nonce for a Quote is voided, false otherwise. /// Used for checking if a Quote is a duplicated. /// @param account Account to query /// @param nonce Nonce to query /// @return bool True if used, false otherwise function isNonceVoid(address account, uint nonce) external view returns(bool); /// @notice Get the total balance of borrows by user /// @param account Account to query /// @return uint Borrows function accountBorrows(address account) external view returns(uint); /// @notice Get the current total partial fill for a Quote /// @param quoteId ID of the Quote - this is the keccak256 hash of the signature /// @return uint Partial fill function quoteFill(bytes32 quoteId) external view returns(uint); /// @notice Get the `protocolFee` associated with this market /// @return uint annualized protocol fee, scaled by 1e4 function protocolFee() external view returns(uint); /// @notice Get the `protocolFee` associated with this market, prorated by time till maturity /// @param amount loan amount /// @param timeNow block timestamp for calculating time till maturity /// @return uint prorated protocol fee, scaled by 1e4 function proratedProtocolFee(uint amount, uint timeNow) external view returns(uint); /// @notice Get the `protocolFee` associated with this market, prorated by time till maturity from now /// @param amount loan amount /// @return uint prorated protocol fee, scaled by 1e4 function proratedProtocolFeeNow(uint amount) external view returns(uint); /// @notice Gets the current `redemptionRatio` where owned qTokens can be redeemed up to /// @return uint redemption ratio, scaled by 1e18 function redemptionRatio() external view returns(uint); /// @notice Tokens redeemed across all users so far /// @return uint redeemed amount of qToken function tokensRedeemedTotal() external view returns(uint); /// @notice Get total protocol fee accrued in this market so far, in local currency /// @return uint accrued fee function totalAccruedFees() external view returns(uint); }
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; interface ITradingEmissionsQontroller { /** ACCESS CONTROLLED FUNCTIONS **/ /// @notice Use the fees generated (in USD) as basis to calculate how much /// token reward to disburse for trading volumes. Only `FixedRateMarket` /// contracts may call this function. /// @param borrower Address of the borrower /// @param lender Address of the lender /// @param feeUSD Fees generated (in USD, scaled to 1e18) function updateRewards(address borrower, address lender, uint feeUSD) external; /** USER INTERFACE **/ /// @notice Mint the unclaimed rewards to user and reset their claimable emissions function claimEmissions() external; /** VIEW FUNCTIONS **/ /// @notice Checks the amount of unclaimed trading rewards that the user can claim /// @param account Address of the user /// @return uint Amount of QODA token rewards the user may claim function claimableEmissions(address account) external view returns(uint); function qAdmin() external view returns(address); function qodaERC20() external view returns(address); function numPhases() external view returns(uint); function currentPhase() external view returns(uint); function totalAllocation() external view returns(uint); function emissionsPhase(uint phase) external view returns(uint, uint, uint); }
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; interface IStakingEmissionsQontroller { /** EVENTS **/ /// @notice Emitted when we move to a new emissions regime event NewEmissionsPerBlock(uint indexed currentPeriod, uint startBlock, uint emissions, uint numBlocks); /// @notice Emitted when user claims emissions event ClaimEmissions(address indexed account, uint emission); /// @notice Emitted when user deposits event Deposit(address indexed account, uint amount); /// @notice Emitted when user withdraws event Withdraw(address indexed account, uint amount); /** ACCESS CONTROLLED FUNCTIONS **/ /// @notice Credits the account with the given amount in `StakingEmissionsQontroller` /// This function should only be called by the veToken contract when the user /// claims their accrued veTokens. /// @param account Address of the user /// @param amount Amount to credit the account function deposit(address account, uint amount) external; /// @notice Cancels account's full amount and debt from `StakingEmissionsQontroller` /// and claims any remaining emissions for that account. This should only /// be called by the veToken contract when the user unstakes the underlying /// @param account Address of the user. function withdraw(address account) external; /** USER INTERFACE **/ /// @notice Transfer accrued emissions from `StakingEmissionsQontroller` to veToken holder /// This function can be called by the user anytime and as often as they wish. function claimEmissions() external; /// @notice Update emissions variables of the pool function updatePool() external; /** VIEW FUNCTIONS **/ /// @notice Calculates the amount of emissions claimable by a user by updating /// the pool info in memory without writing to storage so that viewing the /// claimable amount does not incur gas costs. /// @param account Address of the user /// @return uint Amount claimable function claimableEmissions(address account) external view returns(uint); function qodaERC20() external view returns(address); function veToken() external view returns(address); function numPeriods() external view returns(uint); function accTokenPerShare() external view returns(uint); function currentPeriod() external view returns(uint); function endBlock() external view returns(uint); function lastEmissionsBlock() external view returns(uint); function emissions() external view returns(uint); function numBlocks() external view returns(uint); // @return emissions per block, scaled by 1e6 function emissionsPerBlock() external view returns(uint); function userInfo(address account) external view returns(uint, uint); function stakingPeriod(uint i) external view returns(uint, uint); }
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IVeQoda is IERC20 { /** EVENTS **/ /// @notice Emitted when user stakes underlying QODA event Stake(address indexed account, uint amount); /// @notice Emitted when user unstakes underlying QODA event Unstake(address indexed account, uint amount); /// @notice Emitted when user claims veToken event Claim(address indexed account, uint amount); /** USER INTERFACE **/ /// @notice Stake underlying into contract /// @param amount Amount of underlying to stake function stake(uint256 amount) external; /// @notice Unstake underlying tokens /// NOTE: You will lose ALL your veToken if you unstake ANY amount of underlying tokens /// @param amount Amount of underlying tokens to unstake function unstake(uint amount) external; /// @notice Claims accumulated veToken function claimVeToken() external; /** VIEW FUNCTIONS **/ /// @notice checks whether user has underlying staked /// @param account The user address to check /// @return true if the user has underlying in stake, false otherwise function hasStaked(address account) external view returns (bool); /// @notice Calculate the amount of veToken that can be claimed by user /// @param account Address to check /// @return uint Amount of veToken that can be claimed by user function claimableVeToken(address account) external view returns(uint); /// @notice Returns the underlying amount of underlying staked by the user /// @param account User address to check /// @return uint Amount of staked underlying underlying function getStakedAmount(address account) external view returns(uint); function qodaERC20() external view returns(address); function stakingEmissionsQontroller() external view returns(address); function feeEmissionsQontroller() external view returns(address); function veTokenPerBlock() external view returns(uint); function maxVeToken() external view returns(uint); }
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; library QTypes { /// @notice Contains all the details of an Asset. Assets must be defined /// before they can be used as collateral. /// @member isEnabled True if an asset is defined, false otherwise /// @member isYieldBearing True if token bears interest (eg aToken, cToken, mToken, etc) /// @member underlying Address of the underlying token /// @member oracleFeed Address of the corresponding chainlink oracle feed /// @member collateralFactor 0.0 to 1.0 (scaled to 1e8) for discounting risky assets /// @member marketFactor 0.0 1.0 for premium on risky borrows /// @member maturities Iterable storage for all enabled maturities struct Asset { bool isEnabled; bool isYieldBearing; address underlying; address oracleFeed; uint collateralFactor; uint marketFactor; uint[] maturities; } /// @notice Contains all the fields of a published Quote /// @notice quoteId ID of the quote - this is the keccak256 hash of signature /// @param marketAddress Address of `FixedRateLoanMarket` contract /// @param quoter Account of the Quoter /// @param quoteType 0 for PV+APR, 1 for FV+APR /// @param side 0 if Quoter is borrowing, 1 if Quoter is lending /// @param quoteExpiryTime Timestamp after which the quote is no longer valid /// @param APR In decimal form scaled by 1e4 (ex. 10.52% = 1052) /// @param cashflow Can be PV or FV depending on `quoteType` /// @param nonce For uniqueness of signature /// @param signature Signed hash of the Quote message struct Quote { bytes32 quoteId; address marketAddress; address quoter; uint8 quoteType; uint8 side; uint64 quoteExpiryTime; //if 0, then quote never expires uint64 APR; uint cashflow; uint nonce; bytes signature; } }
//SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IFeeEmissionsQontroller { /// @notice Emitted when user claims emissions event ClaimEmissions(address account, uint amount); /// @notice Emitted when fee is accrued in a round event FeesAccrued(uint round, address token, uint amount, uint amountInRound); /// @notice Emitted when we move to a new round event NewFeeEmissionsRound(uint indexed currentPeriod, uint startBlock, uint endBlock); /** ACCESS CONTROLLED FUNCTIONS **/ function receiveFees(IERC20 underlyingToken, uint feeLocal) external; function veIncrease(address account, uint veIncreased) external; function veReset(address account) external; /** USER INTERFACE **/ function claimEmissions() external; function claimEmissions(address account) external; /** VIEW FUNCTIONS **/ function claimableEmissions(address account) external view returns(uint); function qAdmin() external view returns (address); function veToken() external view returns (address); function swapContract() external view returns (address); function WETH() external view returns (IERC20); function emissionsRound() external view returns (uint, uint, uint); function emissionsRound(uint round_) external view returns (uint, uint, uint); function blocksTillRoundEnd() external view returns (uint); function stakedVeAtRound(address account, uint round) external view returns (uint); function roundInterval() external view returns (uint); function currentRound() external view returns (uint); function lastClaimedRound() external view returns (uint); function lastClaimedRound(address account) external view returns (uint); function lastClaimedVeBalance() external view returns (uint); function lastClaimedVeBalance(address account) external view returns (uint); function totalFeesAccrued() external view returns (uint); function totalFeesClaimed() external view returns (uint); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControlEnumerableUpgradeable.sol"; import "./AccessControlUpgradeable.sol"; import "../utils/structs/EnumerableSetUpgradeable.sol"; import "../proxy/utils/Initializable.sol"; /** * @dev Extension of {AccessControl} that allows enumerating the members of each role. */ abstract contract AccessControlEnumerableUpgradeable is Initializable, IAccessControlEnumerableUpgradeable, AccessControlUpgradeable { function __AccessControlEnumerable_init() internal onlyInitializing { } function __AccessControlEnumerable_init_unchained() internal onlyInitializing { } using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet; mapping(bytes32 => EnumerableSetUpgradeable.AddressSet) private _roleMembers; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControlEnumerableUpgradeable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) { return _roleMembers[role].at(index); } /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) { return _roleMembers[role].length(); } /** * @dev Overload {_grantRole} to track enumerable memberships */ function _grantRole(bytes32 role, address account) internal virtual override { super._grantRole(role, account); _roleMembers[role].add(account); } /** * @dev Overload {_revokeRole} to track enumerable memberships */ function _revokeRole(bytes32 role, address account) internal virtual override { super._revokeRole(role, account); _roleMembers[role].remove(account); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Upgradeable { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20Upgradeable.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20MetadataUpgradeable is IERC20Upgradeable { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControlUpgradeable { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControlUpgradeable.sol"; /** * @dev External interface of AccessControlEnumerable declared to support ERC165 detection. */ interface IAccessControlEnumerableUpgradeable is IAccessControlUpgradeable { /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) external view returns (address); /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControlUpgradeable.sol"; import "../utils/ContextUpgradeable.sol"; import "../utils/StringsUpgradeable.sol"; import "../utils/introspection/ERC165Upgradeable.sol"; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable { function __AccessControl_init() internal onlyInitializing { } function __AccessControl_init_unchained() internal onlyInitializing { } struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", StringsUpgradeable.toHexString(uint160(account), 20), " is missing role ", StringsUpgradeable.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet. * ==== */ library EnumerableSetUpgradeable { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal onlyInitializing { } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165Upgradeable { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.