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Contract Name:
CollateralUtil
Compiler Version
v0.5.16+commit.9c3226ce
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at sepolia-optimism.etherscan.io on 2023-12-11 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: CollateralUtil.sol * * Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/CollateralUtil.sol * Docs: https://docs.synthetix.io/contracts/CollateralUtil * * Contract Dependencies: * - IAddressResolver * - ICollateralLoan * - ICollateralUtil * - MixinResolver * - MixinSystemSettings * - Owned * Libraries: * - SafeDecimalMath * - SafeMath * * MIT License * =========== * * Copyright (c) 2023 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity >=0.4.24; // https://docs.synthetix.io/contracts/source/interfaces/iaddressresolver interface IAddressResolver { function getAddress(bytes32 name) external view returns (address); function getSynth(bytes32 key) external view returns (address); function requireAndGetAddress(bytes32 name, string calldata reason) external view returns (address); } pragma experimental ABIEncoderV2; interface ICollateralLoan { struct Loan { // ID for the loan uint id; // Acccount that created the loan address payable account; // Amount of collateral deposited uint collateral; // The synth that was borowed bytes32 currency; // Amount of synths borrowed uint amount; // Indicates if the position was short sold bool short; // interest amounts accrued uint accruedInterest; // last interest index uint interestIndex; // time of last interaction. uint lastInteraction; } } interface ICollateralUtil { function getCollateralRatio(ICollateralLoan.Loan calldata loan, bytes32 collateralKey) external view returns (uint cratio); function maxLoan( uint amount, bytes32 currency, uint minCratio, bytes32 collateralKey ) external view returns (uint max); function liquidationAmount( ICollateralLoan.Loan calldata loan, uint minCratio, bytes32 collateralKey ) external view returns (uint amount); function collateralRedeemed( bytes32 currency, uint amount, bytes32 collateralKey ) external view returns (uint collateral); } // https://docs.synthetix.io/contracts/source/interfaces/IDirectIntegration interface IDirectIntegrationManager { struct ParameterIntegrationSettings { bytes32 currencyKey; address dexPriceAggregator; address atomicEquivalentForDexPricing; uint atomicExchangeFeeRate; uint atomicTwapWindow; uint atomicMaxVolumePerBlock; uint atomicVolatilityConsiderationWindow; uint atomicVolatilityUpdateThreshold; uint exchangeFeeRate; uint exchangeMaxDynamicFee; uint exchangeDynamicFeeRounds; uint exchangeDynamicFeeThreshold; uint exchangeDynamicFeeWeightDecay; } function getExchangeParameters(address integration, bytes32 key) external view returns (ParameterIntegrationSettings memory settings); function setExchangeParameters( address integration, bytes32[] calldata currencyKeys, ParameterIntegrationSettings calldata params ) external; } // https://docs.synthetix.io/contracts/source/interfaces/iexchangerates interface IExchangeRates { // Structs struct RateAndUpdatedTime { uint216 rate; uint40 time; } // Views function aggregators(bytes32 currencyKey) external view returns (address); function aggregatorWarningFlags() external view returns (address); function anyRateIsInvalid(bytes32[] calldata currencyKeys) external view returns (bool); function anyRateIsInvalidAtRound(bytes32[] calldata currencyKeys, uint[] calldata roundIds) external view returns (bool); function currenciesUsingAggregator(address aggregator) external view returns (bytes32[] memory); function effectiveValue( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external view returns (uint value); function effectiveValueAndRates( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external view returns ( uint value, uint sourceRate, uint destinationRate ); function effectiveValueAndRatesAtRound( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, uint roundIdForSrc, uint roundIdForDest ) external view returns ( uint value, uint sourceRate, uint destinationRate ); function effectiveAtomicValueAndRates( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external view returns ( uint value, uint systemValue, uint systemSourceRate, uint systemDestinationRate ); function effectiveAtomicValueAndRates( IDirectIntegrationManager.ParameterIntegrationSettings calldata sourceSettings, uint sourceAmount, IDirectIntegrationManager.ParameterIntegrationSettings calldata destinationSettings, IDirectIntegrationManager.ParameterIntegrationSettings calldata usdSettings ) external view returns ( uint value, uint systemValue, uint systemSourceRate, uint systemDestinationRate ); function getCurrentRoundId(bytes32 currencyKey) external view returns (uint); function getLastRoundIdBeforeElapsedSecs( bytes32 currencyKey, uint startingRoundId, uint startingTimestamp, uint timediff ) external view returns (uint); function lastRateUpdateTimes(bytes32 currencyKey) external view returns (uint256); function rateAndTimestampAtRound(bytes32 currencyKey, uint roundId) external view returns (uint rate, uint time); function rateAndUpdatedTime(bytes32 currencyKey) external view returns (uint rate, uint time); function rateAndInvalid(bytes32 currencyKey) external view returns (uint rate, bool isInvalid); function rateForCurrency(bytes32 currencyKey) external view returns (uint); function rateIsFlagged(bytes32 currencyKey) external view returns (bool); function rateIsInvalid(bytes32 currencyKey) external view returns (bool); function rateIsStale(bytes32 currencyKey) external view returns (bool); function rateStalePeriod() external view returns (uint); function ratesAndUpdatedTimeForCurrencyLastNRounds( bytes32 currencyKey, uint numRounds, uint roundId ) external view returns (uint[] memory rates, uint[] memory times); function ratesAndInvalidForCurrencies(bytes32[] calldata currencyKeys) external view returns (uint[] memory rates, bool anyRateInvalid); function ratesForCurrencies(bytes32[] calldata currencyKeys) external view returns (uint[] memory); function synthTooVolatileForAtomicExchange(bytes32 currencyKey) external view returns (bool); function synthTooVolatileForAtomicExchange(IDirectIntegrationManager.ParameterIntegrationSettings calldata settings) external view returns (bool); function rateWithSafetyChecks(bytes32 currencyKey) external returns ( uint rate, bool broken, bool invalid ); } // https://docs.synthetix.io/contracts/source/contracts/owned contract Owned { address public owner; address public nominatedOwner; constructor(address _owner) public { require(_owner != address(0), "Owner address cannot be 0"); owner = _owner; emit OwnerChanged(address(0), _owner); } function nominateNewOwner(address _owner) external onlyOwner { nominatedOwner = _owner; emit OwnerNominated(_owner); } function acceptOwnership() external { require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership"); emit OwnerChanged(owner, nominatedOwner); owner = nominatedOwner; nominatedOwner = address(0); } modifier onlyOwner { _onlyOwner(); _; } function _onlyOwner() private view { require(msg.sender == owner, "Only the contract owner may perform this action"); } event OwnerNominated(address newOwner); event OwnerChanged(address oldOwner, address newOwner); } // https://docs.synthetix.io/contracts/source/interfaces/isynth interface ISynth { // Views function currencyKey() external view returns (bytes32); function transferableSynths(address account) external view returns (uint); // Mutative functions function transferAndSettle(address to, uint value) external returns (bool); function transferFromAndSettle( address from, address to, uint value ) external returns (bool); // Restricted: used internally to Synthetix function burn(address account, uint amount) external; function issue(address account, uint amount) external; } // https://docs.synthetix.io/contracts/source/interfaces/iissuer interface IIssuer { // Views function allNetworksDebtInfo() external view returns ( uint256 debt, uint256 sharesSupply, bool isStale ); function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid); function availableCurrencyKeys() external view returns (bytes32[] memory); function availableSynthCount() external view returns (uint); function availableSynths(uint index) external view returns (ISynth); function canBurnSynths(address account) external view returns (bool); function collateral(address account) external view returns (uint); function collateralisationRatio(address issuer) external view returns (uint); function collateralisationRatioAndAnyRatesInvalid(address _issuer) external view returns (uint cratio, bool anyRateIsInvalid); function debtBalanceOf(address issuer, bytes32 currencyKey) external view returns (uint debtBalance); function issuanceRatio() external view returns (uint); function lastIssueEvent(address account) external view returns (uint); function maxIssuableSynths(address issuer) external view returns (uint maxIssuable); function minimumStakeTime() external view returns (uint); function remainingIssuableSynths(address issuer) external view returns ( uint maxIssuable, uint alreadyIssued, uint totalSystemDebt ); function synths(bytes32 currencyKey) external view returns (ISynth); function getSynths(bytes32[] calldata currencyKeys) external view returns (ISynth[] memory); function synthsByAddress(address synthAddress) external view returns (bytes32); function totalIssuedSynths(bytes32 currencyKey, bool excludeOtherCollateral) external view returns (uint); function transferableSynthetixAndAnyRateIsInvalid(address account, uint balance) external view returns (uint transferable, bool anyRateIsInvalid); function liquidationAmounts(address account, bool isSelfLiquidation) external view returns ( uint totalRedeemed, uint debtToRemove, uint escrowToLiquidate, uint initialDebtBalance ); // Restricted: used internally to Synthetix function addSynths(ISynth[] calldata synthsToAdd) external; function issueSynths(address from, uint amount) external; function issueSynthsOnBehalf( address issueFor, address from, uint amount ) external; function issueMaxSynths(address from) external; function issueMaxSynthsOnBehalf(address issueFor, address from) external; function burnSynths(address from, uint amount) external; function burnSynthsOnBehalf( address burnForAddress, address from, uint amount ) external; function burnSynthsToTarget(address from) external; function burnSynthsToTargetOnBehalf(address burnForAddress, address from) external; function burnForRedemption( address deprecatedSynthProxy, address account, uint balance ) external; function setCurrentPeriodId(uint128 periodId) external; function liquidateAccount(address account, bool isSelfLiquidation) external returns ( uint totalRedeemed, uint debtRemoved, uint escrowToLiquidate ); function issueSynthsWithoutDebt( bytes32 currencyKey, address to, uint amount ) external returns (bool rateInvalid); function burnSynthsWithoutDebt( bytes32 currencyKey, address to, uint amount ) external returns (bool rateInvalid); function modifyDebtSharesForMigration(address account, uint amount) external; } // Inheritance // Internal references // https://docs.synthetix.io/contracts/source/contracts/addressresolver contract AddressResolver is Owned, IAddressResolver { mapping(bytes32 => address) public repository; constructor(address _owner) public Owned(_owner) {} /* ========== RESTRICTED FUNCTIONS ========== */ function importAddresses(bytes32[] calldata names, address[] calldata destinations) external onlyOwner { require(names.length == destinations.length, "Input lengths must match"); for (uint i = 0; i < names.length; i++) { bytes32 name = names[i]; address destination = destinations[i]; repository[name] = destination; emit AddressImported(name, destination); } } /* ========= PUBLIC FUNCTIONS ========== */ function rebuildCaches(MixinResolver[] calldata destinations) external { for (uint i = 0; i < destinations.length; i++) { destinations[i].rebuildCache(); } } /* ========== VIEWS ========== */ function areAddressesImported(bytes32[] calldata names, address[] calldata destinations) external view returns (bool) { for (uint i = 0; i < names.length; i++) { if (repository[names[i]] != destinations[i]) { return false; } } return true; } function getAddress(bytes32 name) external view returns (address) { return repository[name]; } function requireAndGetAddress(bytes32 name, string calldata reason) external view returns (address) { address _foundAddress = repository[name]; require(_foundAddress != address(0), reason); return _foundAddress; } function getSynth(bytes32 key) external view returns (address) { IIssuer issuer = IIssuer(repository["Issuer"]); require(address(issuer) != address(0), "Cannot find Issuer address"); return address(issuer.synths(key)); } /* ========== EVENTS ========== */ event AddressImported(bytes32 name, address destination); } // Internal references // https://docs.synthetix.io/contracts/source/contracts/mixinresolver contract MixinResolver { AddressResolver public resolver; mapping(bytes32 => address) private addressCache; constructor(address _resolver) internal { resolver = AddressResolver(_resolver); } /* ========== INTERNAL FUNCTIONS ========== */ function combineArrays(bytes32[] memory first, bytes32[] memory second) internal pure returns (bytes32[] memory combination) { combination = new bytes32[](first.length + second.length); for (uint i = 0; i < first.length; i++) { combination[i] = first[i]; } for (uint j = 0; j < second.length; j++) { combination[first.length + j] = second[j]; } } /* ========== PUBLIC FUNCTIONS ========== */ // Note: this function is public not external in order for it to be overridden and invoked via super in subclasses function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {} function rebuildCache() public { bytes32[] memory requiredAddresses = resolverAddressesRequired(); // The resolver must call this function whenver it updates its state for (uint i = 0; i < requiredAddresses.length; i++) { bytes32 name = requiredAddresses[i]; // Note: can only be invoked once the resolver has all the targets needed added address destination = resolver.requireAndGetAddress(name, string(abi.encodePacked("Resolver missing target: ", name))); addressCache[name] = destination; emit CacheUpdated(name, destination); } } /* ========== VIEWS ========== */ function isResolverCached() external view returns (bool) { bytes32[] memory requiredAddresses = resolverAddressesRequired(); for (uint i = 0; i < requiredAddresses.length; i++) { bytes32 name = requiredAddresses[i]; // false if our cache is invalid or if the resolver doesn't have the required address if (resolver.getAddress(name) != addressCache[name] || addressCache[name] == address(0)) { return false; } } return true; } /* ========== INTERNAL FUNCTIONS ========== */ function requireAndGetAddress(bytes32 name) internal view returns (address) { address _foundAddress = addressCache[name]; require(_foundAddress != address(0), string(abi.encodePacked("Missing address: ", name))); return _foundAddress; } /* ========== EVENTS ========== */ event CacheUpdated(bytes32 name, address destination); } // https://docs.synthetix.io/contracts/source/interfaces/iflexiblestorage interface IFlexibleStorage { // Views function getUIntValue(bytes32 contractName, bytes32 record) external view returns (uint); function getUIntValues(bytes32 contractName, bytes32[] calldata records) external view returns (uint[] memory); function getIntValue(bytes32 contractName, bytes32 record) external view returns (int); function getIntValues(bytes32 contractName, bytes32[] calldata records) external view returns (int[] memory); function getAddressValue(bytes32 contractName, bytes32 record) external view returns (address); function getAddressValues(bytes32 contractName, bytes32[] calldata records) external view returns (address[] memory); function getBoolValue(bytes32 contractName, bytes32 record) external view returns (bool); function getBoolValues(bytes32 contractName, bytes32[] calldata records) external view returns (bool[] memory); function getBytes32Value(bytes32 contractName, bytes32 record) external view returns (bytes32); function getBytes32Values(bytes32 contractName, bytes32[] calldata records) external view returns (bytes32[] memory); // Mutative functions function deleteUIntValue(bytes32 contractName, bytes32 record) external; function deleteIntValue(bytes32 contractName, bytes32 record) external; function deleteAddressValue(bytes32 contractName, bytes32 record) external; function deleteBoolValue(bytes32 contractName, bytes32 record) external; function deleteBytes32Value(bytes32 contractName, bytes32 record) external; function setUIntValue( bytes32 contractName, bytes32 record, uint value ) external; function setUIntValues( bytes32 contractName, bytes32[] calldata records, uint[] calldata values ) external; function setIntValue( bytes32 contractName, bytes32 record, int value ) external; function setIntValues( bytes32 contractName, bytes32[] calldata records, int[] calldata values ) external; function setAddressValue( bytes32 contractName, bytes32 record, address value ) external; function setAddressValues( bytes32 contractName, bytes32[] calldata records, address[] calldata values ) external; function setBoolValue( bytes32 contractName, bytes32 record, bool value ) external; function setBoolValues( bytes32 contractName, bytes32[] calldata records, bool[] calldata values ) external; function setBytes32Value( bytes32 contractName, bytes32 record, bytes32 value ) external; function setBytes32Values( bytes32 contractName, bytes32[] calldata records, bytes32[] calldata values ) external; } // Internal references // https://docs.synthetix.io/contracts/source/contracts/mixinsystemsettings contract MixinSystemSettings is MixinResolver { // must match the one defined SystemSettingsLib, defined in both places due to sol v0.5 limitations bytes32 internal constant SETTING_CONTRACT_NAME = "SystemSettings"; bytes32 internal constant SETTING_WAITING_PERIOD_SECS = "waitingPeriodSecs"; bytes32 internal constant SETTING_PRICE_DEVIATION_THRESHOLD_FACTOR = "priceDeviationThresholdFactor"; bytes32 internal constant SETTING_ISSUANCE_RATIO = "issuanceRatio"; bytes32 internal constant SETTING_FEE_PERIOD_DURATION = "feePeriodDuration"; bytes32 internal constant SETTING_TARGET_THRESHOLD = "targetThreshold"; bytes32 internal constant SETTING_LIQUIDATION_DELAY = "liquidationDelay"; bytes32 internal constant SETTING_LIQUIDATION_RATIO = "liquidationRatio"; bytes32 internal constant SETTING_LIQUIDATION_ESCROW_DURATION = "liquidationEscrowDuration"; bytes32 internal constant SETTING_LIQUIDATION_PENALTY = "liquidationPenalty"; bytes32 internal constant SETTING_SNX_LIQUIDATION_PENALTY = "snxLiquidationPenalty"; bytes32 internal constant SETTING_SELF_LIQUIDATION_PENALTY = "selfLiquidationPenalty"; bytes32 internal constant SETTING_FLAG_REWARD = "flagReward"; bytes32 internal constant SETTING_LIQUIDATE_REWARD = "liquidateReward"; bytes32 internal constant SETTING_RATE_STALE_PERIOD = "rateStalePeriod"; /* ========== Exchange Fees Related ========== */ bytes32 internal constant SETTING_EXCHANGE_FEE_RATE = "exchangeFeeRate"; bytes32 internal constant SETTING_EXCHANGE_DYNAMIC_FEE_THRESHOLD = "exchangeDynamicFeeThreshold"; bytes32 internal constant SETTING_EXCHANGE_DYNAMIC_FEE_WEIGHT_DECAY = "exchangeDynamicFeeWeightDecay"; bytes32 internal constant SETTING_EXCHANGE_DYNAMIC_FEE_ROUNDS = "exchangeDynamicFeeRounds"; bytes32 internal constant SETTING_EXCHANGE_MAX_DYNAMIC_FEE = "exchangeMaxDynamicFee"; /* ========== End Exchange Fees Related ========== */ bytes32 internal constant SETTING_MINIMUM_STAKE_TIME = "minimumStakeTime"; bytes32 internal constant SETTING_AGGREGATOR_WARNING_FLAGS = "aggregatorWarningFlags"; bytes32 internal constant SETTING_TRADING_REWARDS_ENABLED = "tradingRewardsEnabled"; bytes32 internal constant SETTING_DEBT_SNAPSHOT_STALE_TIME = "debtSnapshotStaleTime"; bytes32 internal constant SETTING_CROSS_DOMAIN_DEPOSIT_GAS_LIMIT = "crossDomainDepositGasLimit"; bytes32 internal constant SETTING_CROSS_DOMAIN_ESCROW_GAS_LIMIT = "crossDomainEscrowGasLimit"; bytes32 internal constant SETTING_CROSS_DOMAIN_REWARD_GAS_LIMIT = "crossDomainRewardGasLimit"; bytes32 internal constant SETTING_CROSS_DOMAIN_WITHDRAWAL_GAS_LIMIT = "crossDomainWithdrawalGasLimit"; bytes32 internal constant SETTING_CROSS_DOMAIN_FEE_PERIOD_CLOSE_GAS_LIMIT = "crossDomainCloseGasLimit"; bytes32 internal constant SETTING_CROSS_DOMAIN_RELAY_GAS_LIMIT = "crossDomainRelayGasLimit"; bytes32 internal constant SETTING_ETHER_WRAPPER_MAX_ETH = "etherWrapperMaxETH"; bytes32 internal constant SETTING_ETHER_WRAPPER_MINT_FEE_RATE = "etherWrapperMintFeeRate"; bytes32 internal constant SETTING_ETHER_WRAPPER_BURN_FEE_RATE = "etherWrapperBurnFeeRate"; bytes32 internal constant SETTING_WRAPPER_MAX_TOKEN_AMOUNT = "wrapperMaxTokens"; bytes32 internal constant SETTING_WRAPPER_MINT_FEE_RATE = "wrapperMintFeeRate"; bytes32 internal constant SETTING_WRAPPER_BURN_FEE_RATE = "wrapperBurnFeeRate"; bytes32 internal constant SETTING_INTERACTION_DELAY = "interactionDelay"; bytes32 internal constant SETTING_COLLAPSE_FEE_RATE = "collapseFeeRate"; bytes32 internal constant SETTING_ATOMIC_MAX_VOLUME_PER_BLOCK = "atomicMaxVolumePerBlock"; bytes32 internal constant SETTING_ATOMIC_TWAP_WINDOW = "atomicTwapWindow"; bytes32 internal constant SETTING_ATOMIC_EQUIVALENT_FOR_DEX_PRICING = "atomicEquivalentForDexPricing"; bytes32 internal constant SETTING_ATOMIC_EXCHANGE_FEE_RATE = "atomicExchangeFeeRate"; bytes32 internal constant SETTING_ATOMIC_VOLATILITY_CONSIDERATION_WINDOW = "atomicVolConsiderationWindow"; bytes32 internal constant SETTING_ATOMIC_VOLATILITY_UPDATE_THRESHOLD = "atomicVolUpdateThreshold"; bytes32 internal constant SETTING_PURE_CHAINLINK_PRICE_FOR_ATOMIC_SWAPS_ENABLED = "pureChainlinkForAtomicsEnabled"; bytes32 internal constant SETTING_CROSS_SYNTH_TRANSFER_ENABLED = "crossChainSynthTransferEnabled"; bytes32 internal constant CONTRACT_FLEXIBLESTORAGE = "FlexibleStorage"; enum CrossDomainMessageGasLimits {Deposit, Escrow, Reward, Withdrawal, CloseFeePeriod, Relay} struct DynamicFeeConfig { uint threshold; uint weightDecay; uint rounds; uint maxFee; } constructor(address _resolver) internal MixinResolver(_resolver) {} function resolverAddressesRequired() public view returns (bytes32[] memory addresses) { addresses = new bytes32[](1); addresses[0] = CONTRACT_FLEXIBLESTORAGE; } function flexibleStorage() internal view returns (IFlexibleStorage) { return IFlexibleStorage(requireAndGetAddress(CONTRACT_FLEXIBLESTORAGE)); } function _getGasLimitSetting(CrossDomainMessageGasLimits gasLimitType) internal pure returns (bytes32) { if (gasLimitType == CrossDomainMessageGasLimits.Deposit) { return SETTING_CROSS_DOMAIN_DEPOSIT_GAS_LIMIT; } else if (gasLimitType == CrossDomainMessageGasLimits.Escrow) { return SETTING_CROSS_DOMAIN_ESCROW_GAS_LIMIT; } else if (gasLimitType == CrossDomainMessageGasLimits.Reward) { return SETTING_CROSS_DOMAIN_REWARD_GAS_LIMIT; } else if (gasLimitType == CrossDomainMessageGasLimits.Withdrawal) { return SETTING_CROSS_DOMAIN_WITHDRAWAL_GAS_LIMIT; } else if (gasLimitType == CrossDomainMessageGasLimits.Relay) { return SETTING_CROSS_DOMAIN_RELAY_GAS_LIMIT; } else if (gasLimitType == CrossDomainMessageGasLimits.CloseFeePeriod) { return SETTING_CROSS_DOMAIN_FEE_PERIOD_CLOSE_GAS_LIMIT; } else { revert("Unknown gas limit type"); } } function getCrossDomainMessageGasLimit(CrossDomainMessageGasLimits gasLimitType) internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, _getGasLimitSetting(gasLimitType)); } function getTradingRewardsEnabled() internal view returns (bool) { return flexibleStorage().getBoolValue(SETTING_CONTRACT_NAME, SETTING_TRADING_REWARDS_ENABLED); } function getWaitingPeriodSecs() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_WAITING_PERIOD_SECS); } function getPriceDeviationThresholdFactor() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_PRICE_DEVIATION_THRESHOLD_FACTOR); } function getIssuanceRatio() internal view returns (uint) { // lookup on flexible storage directly for gas savings (rather than via SystemSettings) return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_ISSUANCE_RATIO); } function getFeePeriodDuration() internal view returns (uint) { // lookup on flexible storage directly for gas savings (rather than via SystemSettings) return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_FEE_PERIOD_DURATION); } function getTargetThreshold() internal view returns (uint) { // lookup on flexible storage directly for gas savings (rather than via SystemSettings) return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_TARGET_THRESHOLD); } function getLiquidationDelay() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_LIQUIDATION_DELAY); } function getLiquidationRatio() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_LIQUIDATION_RATIO); } function getLiquidationEscrowDuration() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_LIQUIDATION_ESCROW_DURATION); } function getLiquidationPenalty() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_LIQUIDATION_PENALTY); } function getSnxLiquidationPenalty() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_SNX_LIQUIDATION_PENALTY); } function getSelfLiquidationPenalty() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_SELF_LIQUIDATION_PENALTY); } function getFlagReward() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_FLAG_REWARD); } function getLiquidateReward() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_LIQUIDATE_REWARD); } function getRateStalePeriod() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_RATE_STALE_PERIOD); } /* ========== Exchange Related Fees ========== */ function getExchangeFeeRate(bytes32 currencyKey) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_EXCHANGE_FEE_RATE, currencyKey)) ); } /// @notice Get exchange dynamic fee related keys /// @return threshold, weight decay, rounds, and max fee function getExchangeDynamicFeeConfig() internal view returns (DynamicFeeConfig memory) { bytes32[] memory keys = new bytes32[](4); keys[0] = SETTING_EXCHANGE_DYNAMIC_FEE_THRESHOLD; keys[1] = SETTING_EXCHANGE_DYNAMIC_FEE_WEIGHT_DECAY; keys[2] = SETTING_EXCHANGE_DYNAMIC_FEE_ROUNDS; keys[3] = SETTING_EXCHANGE_MAX_DYNAMIC_FEE; uint[] memory values = flexibleStorage().getUIntValues(SETTING_CONTRACT_NAME, keys); return DynamicFeeConfig({threshold: values[0], weightDecay: values[1], rounds: values[2], maxFee: values[3]}); } /* ========== End Exchange Related Fees ========== */ function getMinimumStakeTime() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_MINIMUM_STAKE_TIME); } function getAggregatorWarningFlags() internal view returns (address) { return flexibleStorage().getAddressValue(SETTING_CONTRACT_NAME, SETTING_AGGREGATOR_WARNING_FLAGS); } function getDebtSnapshotStaleTime() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_DEBT_SNAPSHOT_STALE_TIME); } function getEtherWrapperMaxETH() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_ETHER_WRAPPER_MAX_ETH); } function getEtherWrapperMintFeeRate() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_ETHER_WRAPPER_MINT_FEE_RATE); } function getEtherWrapperBurnFeeRate() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_ETHER_WRAPPER_BURN_FEE_RATE); } function getWrapperMaxTokenAmount(address wrapper) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_WRAPPER_MAX_TOKEN_AMOUNT, wrapper)) ); } function getWrapperMintFeeRate(address wrapper) internal view returns (int) { return flexibleStorage().getIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_WRAPPER_MINT_FEE_RATE, wrapper)) ); } function getWrapperBurnFeeRate(address wrapper) internal view returns (int) { return flexibleStorage().getIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_WRAPPER_BURN_FEE_RATE, wrapper)) ); } function getInteractionDelay(address collateral) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_INTERACTION_DELAY, collateral)) ); } function getCollapseFeeRate(address collateral) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_COLLAPSE_FEE_RATE, collateral)) ); } function getAtomicMaxVolumePerBlock() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_ATOMIC_MAX_VOLUME_PER_BLOCK); } function getAtomicTwapWindow() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_ATOMIC_TWAP_WINDOW); } function getAtomicEquivalentForDexPricing(bytes32 currencyKey) internal view returns (address) { return flexibleStorage().getAddressValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_ATOMIC_EQUIVALENT_FOR_DEX_PRICING, currencyKey)) ); } function getAtomicExchangeFeeRate(bytes32 currencyKey) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_ATOMIC_EXCHANGE_FEE_RATE, currencyKey)) ); } function getAtomicVolatilityConsiderationWindow(bytes32 currencyKey) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_ATOMIC_VOLATILITY_CONSIDERATION_WINDOW, currencyKey)) ); } function getAtomicVolatilityUpdateThreshold(bytes32 currencyKey) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_ATOMIC_VOLATILITY_UPDATE_THRESHOLD, currencyKey)) ); } function getPureChainlinkPriceForAtomicSwapsEnabled(bytes32 currencyKey) internal view returns (bool) { return flexibleStorage().getBoolValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_PURE_CHAINLINK_PRICE_FOR_ATOMIC_SWAPS_ENABLED, currencyKey)) ); } function getCrossChainSynthTransferEnabled(bytes32 currencyKey) internal view returns (uint) { return flexibleStorage().getUIntValue( SETTING_CONTRACT_NAME, keccak256(abi.encodePacked(SETTING_CROSS_SYNTH_TRANSFER_ENABLED, currencyKey)) ); } function getExchangeMaxDynamicFee() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_EXCHANGE_MAX_DYNAMIC_FEE); } function getExchangeDynamicFeeRounds() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_EXCHANGE_DYNAMIC_FEE_ROUNDS); } function getExchangeDynamicFeeThreshold() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_EXCHANGE_DYNAMIC_FEE_THRESHOLD); } function getExchangeDynamicFeeWeightDecay() internal view returns (uint) { return flexibleStorage().getUIntValue(SETTING_CONTRACT_NAME, SETTING_EXCHANGE_DYNAMIC_FEE_WEIGHT_DECAY); } } /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } // Libraries // https://docs.synthetix.io/contracts/source/libraries/safedecimalmath library SafeDecimalMath { using SafeMath for uint; /* Number of decimal places in the representations. */ uint8 public constant decimals = 18; uint8 public constant highPrecisionDecimals = 27; /* The number representing 1.0. */ uint public constant UNIT = 10**uint(decimals); /* The number representing 1.0 for higher fidelity numbers. */ uint public constant PRECISE_UNIT = 10**uint(highPrecisionDecimals); uint private constant UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR = 10**uint(highPrecisionDecimals - decimals); /** * @return Provides an interface to UNIT. */ function unit() external pure returns (uint) { return UNIT; } /** * @return Provides an interface to PRECISE_UNIT. */ function preciseUnit() external pure returns (uint) { return PRECISE_UNIT; } /** * @return The result of multiplying x and y, interpreting the operands as fixed-point * decimals. * * @dev A unit factor is divided out after the product of x and y is evaluated, * so that product must be less than 2**256. As this is an integer division, * the internal division always rounds down. This helps save on gas. Rounding * is more expensive on gas. */ function multiplyDecimal(uint x, uint y) internal pure returns (uint) { /* Divide by UNIT to remove the extra factor introduced by the product. */ return x.mul(y) / UNIT; } /** * @return The result of safely multiplying x and y, interpreting the operands * as fixed-point decimals of the specified precision unit. * * @dev The operands should be in the form of a the specified unit factor which will be * divided out after the product of x and y is evaluated, so that product must be * less than 2**256. * * Unlike multiplyDecimal, this function rounds the result to the nearest increment. * Rounding is useful when you need to retain fidelity for small decimal numbers * (eg. small fractions or percentages). */ function _multiplyDecimalRound( uint x, uint y, uint precisionUnit ) private pure returns (uint) { /* Divide by UNIT to remove the extra factor introduced by the product. */ uint quotientTimesTen = x.mul(y) / (precisionUnit / 10); if (quotientTimesTen % 10 >= 5) { quotientTimesTen += 10; } return quotientTimesTen / 10; } /** * @return The result of safely multiplying x and y, interpreting the operands * as fixed-point decimals of a precise unit. * * @dev The operands should be in the precise unit factor which will be * divided out after the product of x and y is evaluated, so that product must be * less than 2**256. * * Unlike multiplyDecimal, this function rounds the result to the nearest increment. * Rounding is useful when you need to retain fidelity for small decimal numbers * (eg. small fractions or percentages). */ function multiplyDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) { return _multiplyDecimalRound(x, y, PRECISE_UNIT); } /** * @return The result of safely multiplying x and y, interpreting the operands * as fixed-point decimals of a standard unit. * * @dev The operands should be in the standard unit factor which will be * divided out after the product of x and y is evaluated, so that product must be * less than 2**256. * * Unlike multiplyDecimal, this function rounds the result to the nearest increment. * Rounding is useful when you need to retain fidelity for small decimal numbers * (eg. small fractions or percentages). */ function multiplyDecimalRound(uint x, uint y) internal pure returns (uint) { return _multiplyDecimalRound(x, y, UNIT); } /** * @return The result of safely dividing x and y. The return value is a high * precision decimal. * * @dev y is divided after the product of x and the standard precision unit * is evaluated, so the product of x and UNIT must be less than 2**256. As * this is an integer division, the result is always rounded down. * This helps save on gas. Rounding is more expensive on gas. */ function divideDecimal(uint x, uint y) internal pure returns (uint) { /* Reintroduce the UNIT factor that will be divided out by y. */ return x.mul(UNIT).div(y); } /** * @return The result of safely dividing x and y. The return value is as a rounded * decimal in the precision unit specified in the parameter. * * @dev y is divided after the product of x and the specified precision unit * is evaluated, so the product of x and the specified precision unit must * be less than 2**256. The result is rounded to the nearest increment. */ function _divideDecimalRound( uint x, uint y, uint precisionUnit ) private pure returns (uint) { uint resultTimesTen = x.mul(precisionUnit * 10).div(y); if (resultTimesTen % 10 >= 5) { resultTimesTen += 10; } return resultTimesTen / 10; } /** * @return The result of safely dividing x and y. The return value is as a rounded * standard precision decimal. * * @dev y is divided after the product of x and the standard precision unit * is evaluated, so the product of x and the standard precision unit must * be less than 2**256. The result is rounded to the nearest increment. */ function divideDecimalRound(uint x, uint y) internal pure returns (uint) { return _divideDecimalRound(x, y, UNIT); } /** * @return The result of safely dividing x and y. The return value is as a rounded * high precision decimal. * * @dev y is divided after the product of x and the high precision unit * is evaluated, so the product of x and the high precision unit must * be less than 2**256. The result is rounded to the nearest increment. */ function divideDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) { return _divideDecimalRound(x, y, PRECISE_UNIT); } /** * @dev Convert a standard decimal representation to a high precision one. */ function decimalToPreciseDecimal(uint i) internal pure returns (uint) { return i.mul(UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR); } /** * @dev Convert a high precision decimal to a standard decimal representation. */ function preciseDecimalToDecimal(uint i) internal pure returns (uint) { uint quotientTimesTen = i / (UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR / 10); if (quotientTimesTen % 10 >= 5) { quotientTimesTen += 10; } return quotientTimesTen / 10; } // Computes `a - b`, setting the value to 0 if b > a. function floorsub(uint a, uint b) internal pure returns (uint) { return b >= a ? 0 : a - b; } /* ---------- Utilities ---------- */ /* * Absolute value of the input, returned as a signed number. */ function signedAbs(int x) internal pure returns (int) { return x < 0 ? -x : x; } /* * Absolute value of the input, returned as an unsigned number. */ function abs(int x) internal pure returns (uint) { return uint(signedAbs(x)); } } // Inheritance contract CollateralUtil is ICollateralUtil, ICollateralLoan, MixinSystemSettings { /* ========== LIBRARIES ========== */ using SafeMath for uint; using SafeDecimalMath for uint; /* ========== CONSTANTS ========== */ bytes32 private constant sUSD = "sUSD"; /* ========== ADDRESS RESOLVER CONFIGURATION ========== */ bytes32 private constant CONTRACT_EXRATES = "ExchangeRates"; function resolverAddressesRequired() public view returns (bytes32[] memory addresses) { bytes32[] memory existingAddresses = MixinSystemSettings.resolverAddressesRequired(); bytes32[] memory newAddresses = new bytes32[](1); newAddresses[0] = CONTRACT_EXRATES; addresses = combineArrays(existingAddresses, newAddresses); } /* ---------- Related Contracts ---------- */ function _exchangeRates() internal view returns (IExchangeRates) { return IExchangeRates(resolver.requireAndGetAddress(CONTRACT_EXRATES, "Missing ExchangeRates contract")); } constructor(address _resolver) public MixinSystemSettings(_resolver) {} /* ========== UTILITY VIEW FUNCS ========== */ function getCollateralRatio(Loan calldata loan, bytes32 collateralKey) external view returns (uint cratio) { uint cvalue = _exchangeRates().effectiveValue(collateralKey, loan.collateral, sUSD); uint dvalue = _exchangeRates().effectiveValue(loan.currency, loan.amount.add(loan.accruedInterest), sUSD); return cvalue.divideDecimal(dvalue); } function maxLoan( uint amount, bytes32 currency, uint minCratio, bytes32 collateralKey ) external view returns (uint max) { uint ratio = SafeDecimalMath.unit().divideDecimalRound(minCratio); return ratio.multiplyDecimal(_exchangeRates().effectiveValue(collateralKey, amount, currency)); } /** * r = target issuance ratio * D = debt value in sUSD * V = collateral value in sUSD * P = liquidation penalty * Calculates amount of synths = (D - V * r) / (1 - (1 + P) * r) * Note: if you pass a loan in here that is not eligible for liquidation it will revert. * We check the ratio first in liquidateInternal and only pass eligible loans in. */ function liquidationAmount( Loan calldata loan, uint minCratio, bytes32 collateralKey ) external view returns (uint amount) { uint liquidationPenalty = getLiquidationPenalty(); uint debtValue = _exchangeRates().effectiveValue(loan.currency, loan.amount.add(loan.accruedInterest), sUSD); uint collateralValue = _exchangeRates().effectiveValue(collateralKey, loan.collateral, sUSD); uint unit = SafeDecimalMath.unit(); uint dividend = debtValue.sub(collateralValue.divideDecimal(minCratio)); uint divisor = unit.sub(unit.add(liquidationPenalty).divideDecimal(minCratio)); uint sUSDamount = dividend.divideDecimal(divisor); return _exchangeRates().effectiveValue(sUSD, sUSDamount, loan.currency); } function collateralRedeemed( bytes32 currency, uint amount, bytes32 collateralKey ) external view returns (uint collateral) { uint liquidationPenalty = getLiquidationPenalty(); collateral = _exchangeRates().effectiveValue(currency, amount, collateralKey); return collateral.multiplyDecimal(SafeDecimalMath.unit().add(liquidationPenalty)); } }
[{"inputs":[{"internalType":"address","name":"_resolver","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"name","type":"bytes32"},{"indexed":false,"internalType":"address","name":"destination","type":"address"}],"name":"CacheUpdated","type":"event"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"currency","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"collateralKey","type":"bytes32"}],"name":"collateralRedeemed","outputs":[{"internalType":"uint256","name":"collateral","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"components":[{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"address payable","name":"account","type":"address"},{"internalType":"uint256","name":"collateral","type":"uint256"},{"internalType":"bytes32","name":"currency","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"short","type":"bool"},{"internalType":"uint256","name":"accruedInterest","type":"uint256"},{"internalType":"uint256","name":"interestIndex","type":"uint256"},{"internalType":"uint256","name":"lastInteraction","type":"uint256"}],"internalType":"struct ICollateralLoan.Loan","name":"loan","type":"tuple"},{"internalType":"bytes32","name":"collateralKey","type":"bytes32"}],"name":"getCollateralRatio","outputs":[{"internalType":"uint256","name":"cratio","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"isResolverCached","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"components":[{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"address payable","name":"account","type":"address"},{"internalType":"uint256","name":"collateral","type":"uint256"},{"internalType":"bytes32","name":"currency","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"short","type":"bool"},{"internalType":"uint256","name":"accruedInterest","type":"uint256"},{"internalType":"uint256","name":"interestIndex","type":"uint256"},{"internalType":"uint256","name":"lastInteraction","type":"uint256"}],"internalType":"struct ICollateralLoan.Loan","name":"loan","type":"tuple"},{"internalType":"uint256","name":"minCratio","type":"uint256"},{"internalType":"bytes32","name":"collateralKey","type":"bytes32"}],"name":"liquidationAmount","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"currency","type":"bytes32"},{"internalType":"uint256","name":"minCratio","type":"uint256"},{"internalType":"bytes32","name":"collateralKey","type":"bytes32"}],"name":"maxLoan","outputs":[{"internalType":"uint256","name":"max","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"rebuildCache","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"resolver","outputs":[{"internalType":"contract AddressResolver","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"resolverAddressesRequired","outputs":[{"internalType":"bytes32[]","name":"addresses","type":"bytes32[]"}],"payable":false,"stateMutability":"view","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000529c553ef2d0370279dc8abf19702b98b166d252
-----Decoded View---------------
Arg [0] : _resolver (address): 0x529C553eF2d0370279DC8AbF19702B98b166D252
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000529c553ef2d0370279dc8abf19702b98b166d252
Library Used
SafeDecimalMath : 0x2ad7ccaac0eeb396c3a5fc2b73a885435688c0d5SystemSettingsLib : 0x343b5efcbf331957d3f4236eb16c338d7256f62dSignedSafeDecimalMath : 0xc7dcc0929881530d3386de51d9ffdd35b8009c6eExchangeSettlementLib : 0x3f60ffaef1ebd84e3c2d0c9c0e12388365d5df12
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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.