AlkemiEarnPublic.sol

View Source: contracts/AlkemiEarnPublic.sol

↗ Extends: Exponential, SafeToken

Structs

Balance

struct Balance {
 uint256 principal,
 uint256 interestIndex
}

Market

struct Market {
 bool isSupported,
 uint256 blockNumber,
 contract InterestRateModel interestRateModel,
 uint256 totalSupply,
 uint256 supplyRateMantissa,
 uint256 supplyIndex,
 uint256 totalBorrows,
 uint256 borrowRateMantissa,
 uint256 borrowIndex
}

SupplyLocalVars

struct SupplyLocalVars {
 uint256 startingBalance,
 uint256 newSupplyIndex,
 uint256 userSupplyCurrent,
 uint256 userSupplyUpdated,
 uint256 newTotalSupply,
 uint256 currentCash,
 uint256 updatedCash,
 uint256 newSupplyRateMantissa,
 uint256 newBorrowIndex,
 uint256 newBorrowRateMantissa
}

WithdrawLocalVars

struct WithdrawLocalVars {
 uint256 withdrawAmount,
 uint256 startingBalance,
 uint256 newSupplyIndex,
 uint256 userSupplyCurrent,
 uint256 userSupplyUpdated,
 uint256 newTotalSupply,
 uint256 currentCash,
 uint256 updatedCash,
 uint256 newSupplyRateMantissa,
 uint256 newBorrowIndex,
 uint256 newBorrowRateMantissa,
 uint256 withdrawCapacity,
 struct Exponential.Exp accountLiquidity,
 struct Exponential.Exp accountShortfall,
 struct Exponential.Exp ethValueOfWithdrawal
}

AccountValueLocalVars

struct AccountValueLocalVars {
 address assetAddress,
 uint256 collateralMarketsLength,
 uint256 newSupplyIndex,
 uint256 userSupplyCurrent,
 uint256 newBorrowIndex,
 uint256 userBorrowCurrent,
 struct Exponential.Exp supplyTotalValue,
 struct Exponential.Exp sumSupplies,
 struct Exponential.Exp borrowTotalValue,
 struct Exponential.Exp sumBorrows
}

PayBorrowLocalVars

struct PayBorrowLocalVars {
 uint256 newBorrowIndex,
 uint256 userBorrowCurrent,
 uint256 repayAmount,
 uint256 userBorrowUpdated,
 uint256 newTotalBorrows,
 uint256 currentCash,
 uint256 updatedCash,
 uint256 newSupplyIndex,
 uint256 newSupplyRateMantissa,
 uint256 newBorrowRateMantissa,
 uint256 startingBalance
}

BorrowLocalVars

struct BorrowLocalVars {
 uint256 newBorrowIndex,
 uint256 userBorrowCurrent,
 uint256 borrowAmountWithFee,
 uint256 userBorrowUpdated,
 uint256 newTotalBorrows,
 uint256 currentCash,
 uint256 updatedCash,
 uint256 newSupplyIndex,
 uint256 newSupplyRateMantissa,
 uint256 newBorrowRateMantissa,
 uint256 startingBalance,
 struct Exponential.Exp accountLiquidity,
 struct Exponential.Exp accountShortfall,
 struct Exponential.Exp ethValueOfBorrowAmountWithFee
}

LiquidateLocalVars

struct LiquidateLocalVars {
 address targetAccount,
 address assetBorrow,
 address liquidator,
 address assetCollateral,
 uint256 newBorrowIndex_UnderwaterAsset,
 uint256 newSupplyIndex_UnderwaterAsset,
 uint256 newBorrowIndex_CollateralAsset,
 uint256 newSupplyIndex_CollateralAsset,
 uint256 currentBorrowBalance_TargetUnderwaterAsset,
 uint256 updatedBorrowBalance_TargetUnderwaterAsset,
 uint256 newTotalBorrows_ProtocolUnderwaterAsset,
 uint256 startingBorrowBalance_TargetUnderwaterAsset,
 uint256 startingSupplyBalance_TargetCollateralAsset,
 uint256 startingSupplyBalance_LiquidatorCollateralAsset,
 uint256 currentSupplyBalance_TargetCollateralAsset,
 uint256 updatedSupplyBalance_TargetCollateralAsset,
 uint256 currentSupplyBalance_LiquidatorCollateralAsset,
 uint256 updatedSupplyBalance_LiquidatorCollateralAsset,
 uint256 newTotalSupply_ProtocolCollateralAsset,
 uint256 currentCash_ProtocolUnderwaterAsset,
 uint256 updatedCash_ProtocolUnderwaterAsset,
 uint256 newSupplyRateMantissa_ProtocolUnderwaterAsset,
 uint256 newBorrowRateMantissa_ProtocolUnderwaterAsset,
 uint256 discountedRepayToEvenAmount,
 uint256 discountedBorrowDenominatedCollateral,
 uint256 maxCloseableBorrowAmount_TargetUnderwaterAsset,
 uint256 closeBorrowAmount_TargetUnderwaterAsset,
 uint256 seizeSupplyAmount_TargetCollateralAsset,
 uint256 reimburseAmount,
 struct Exponential.Exp collateralPrice,
 struct Exponential.Exp underwaterAssetPrice
}

Contract Members

Constants & Variables

//internal members
uint256 internal initialInterestIndex;
uint256 internal defaultOriginationFee;
uint256 internal defaultCollateralRatio;
uint256 internal defaultLiquidationDiscount;

//public members
uint256 public minimumCollateralRatioMantissa;
uint256 public maximumLiquidationDiscountMantissa;
address public pendingAdmin;
address public admin;
mapping(address => bool) public managers;
contract ChainLink public priceOracle;
mapping(address => mapping(address => struct AlkemiEarnPublic.Balance)) public supplyBalances;
mapping(address => mapping(address => struct AlkemiEarnPublic.Balance)) public borrowBalances;
contract AlkemiWETH public WETHContract;
mapping(address => struct AlkemiEarnPublic.Market) public markets;
address[] public collateralMarkets;
struct Exponential.Exp public collateralRatio;
struct Exponential.Exp public originationFee;
struct Exponential.Exp public liquidationDiscount;
bool public paused;
mapping(address => mapping(address => uint256)) public originationFeeBalance;
contract RewardControlInterface public rewardControl;
uint256 public closeFactorMantissa;
uint256 public _guardCounter;

//private members
bool private initializationDone;
address private oracle;
address private wethAddress;

Events

event SupplyReceived(address  account, address  asset, uint256  amount, uint256  startingBalance, uint256  newBalance);
event SupplyOrgFeeAsAdmin(address  account, address  asset, uint256  amount, uint256  startingBalance, uint256  newBalance);
event SupplyWithdrawn(address  account, address  asset, uint256  amount, uint256  startingBalance, uint256  newBalance);
event BorrowTaken(address  account, address  asset, uint256  amount, uint256  startingBalance, uint256  borrowAmountWithFee, uint256  newBalance);
event BorrowRepaid(address  account, address  asset, uint256  amount, uint256  startingBalance, uint256  newBalance);
event BorrowLiquidated(address  targetAccount, address  assetBorrow, uint256  borrowBalanceAccumulated, uint256  amountRepaid, address  liquidator, address  assetCollateral, uint256  amountSeized);
event NewAdmin(address  oldAdmin, address  newAdmin);
event SupportedMarket(address  asset, address  interestRateModel);
event NewRiskParameters(uint256  oldCollateralRatioMantissa, uint256  newCollateralRatioMantissa, uint256  oldLiquidationDiscountMantissa, uint256  newLiquidationDiscountMantissa);
event NewOriginationFee(uint256  oldOriginationFeeMantissa, uint256  newOriginationFeeMantissa);
event SetMarketInterestRateModel(address  asset, address  interestRateModel);
event EquityWithdrawn(address  asset, uint256  equityAvailableBefore, uint256  amount, address  owner);

Modifiers

• nonReentrant

nonReentrant

Prevents a contract from calling itself, directly or indirectly. If you mark a function nonReentrant, you should also mark it external. Calling one nonReentrant function from another is not supported. Instead, you can implement a private function doing the actual work, and an external wrapper marked as nonReentrant.

modifier nonReentrant() internal

Arguments

Name	Type	Description

Functions

• initializer()

• ()

• min(uint256 a, uint256 b)

• addCollateralMarket(address asset)

• getCollateralMarketsLength()

• calculateInterestIndex(uint256 startingInterestIndex, uint256 interestRateMantissa, uint256 blockStart, uint256 blockEnd)

• calculateBalance(uint256 startingBalance, uint256 interestIndexStart, uint256 interestIndexEnd)

• getPriceForAssetAmount(address asset, uint256 assetAmount)

• getPriceForAssetAmountMulCollatRatio(address asset, uint256 assetAmount)

• calculateBorrowAmountWithFee(uint256 borrowAmount)

• fetchAssetPrice(address asset)

• assetPrices(address asset)

• getAssetAmountForValue(address asset, struct Exponential.Exp ethValue)

• _adminFunctions(address newPendingAdmin, address newOracle, bool requestedState, uint256 originationFeeMantissa, uint256 newCloseFactorMantissa)

• _acceptAdmin()

• getAccountLiquidity(address account)

• getSupplyBalance(address account, address asset)

• getBorrowBalance(address account, address asset)

• _supportMarket(address asset, InterestRateModel interestRateModel)

• _suspendMarket(address asset)

• _setRiskParameters(uint256 collateralRatioMantissa, uint256 liquidationDiscountMantissa)

• _setMarketInterestRateModel(address asset, InterestRateModel interestRateModel)

• _withdrawEquity(address asset, uint256 amount)

• setWethAddress(address wethContractAddress)

• supplyEther(address user, uint256 etherAmount)

• revertEtherToUser(address user, uint256 etherAmount)

• supply(address asset, uint256 amount)

• withdrawEther(address user, uint256 etherAmount)

• withdraw(address asset, uint256 requestedAmount)

• calculateAccountLiquidity(address userAddress)

• calculateAccountValuesInternal(address userAddress)

• calculateAccountValues(address userAddress)

• repayBorrow(address asset, uint256 amount)

• liquidateBorrow(address targetAccount, address assetBorrow, address assetCollateral, uint256 requestedAmountClose)

• calculateDiscountedRepayToEvenAmount(address targetAccount, struct Exponential.Exp underwaterAssetPrice, address assetBorrow)

• calculateDiscountedBorrowDenominatedCollateral(struct Exponential.Exp underwaterAssetPrice, struct Exponential.Exp collateralPrice, uint256 supplyCurrent_TargetCollateralAsset)

• calculateAmountSeize(struct Exponential.Exp underwaterAssetPrice, struct Exponential.Exp collateralPrice, uint256 closeBorrowAmount_TargetUnderwaterAsset)

• borrow(address asset, uint256 amount)

• supplyOriginationFeeAsAdmin(address asset, address user, uint256 amount, uint256 newSupplyIndex)

• setRewardControlAddress(address _rewardControl)

• refreshAlkSupplyIndex(address market, address supplier, bool isVerified)

• refreshAlkBorrowIndex(address market, address borrower, bool isVerified)

• getMarketBalances(address asset)

• revertIfError(enum ErrorReporter.Error err)

initializer

AlkemiEarnPublic is the core contract

function initializer() public nonpayable

Arguments

Name	Type	Description

Do not pay directly into AlkemiEarnPublic, please use supply.

function () public payable

Arguments

Name	Type	Description

min

Simple function to calculate min between two numbers.

function min(uint256 a, uint256 b) internal pure
returns(uint256)

Arguments

Name	Type	Description
a	uint256
b	uint256

addCollateralMarket

Adds a given asset to the list of collateral markets. This operation is impossible to reverse. Note: this will not add the asset if it already exists.

function addCollateralMarket(address asset) internal nonpayable

Arguments

Name	Type	Description
asset	address

getCollateralMarketsLength

return the number of elements in collateralMarkets

function getCollateralMarketsLength() public view
returns(uint256)

Returns

the length of collateralMarkets

Arguments

Name	Type	Description

calculateInterestIndex

Calculates a new supply/borrow index based on the prevailing interest rates applied over time This is defined as we multiply the most recent supply/borrow index by (1 + blocks times rate)

function calculateInterestIndex(uint256 startingInterestIndex, uint256 interestRateMantissa, uint256 blockStart, uint256 blockEnd) internal pure
returns(enum ErrorReporter.Error, uint256)

Returns

Return value is expressed in 1e18 scale

Arguments

Name	Type	Description
startingInterestIndex	uint256
interestRateMantissa	uint256
blockStart	uint256
blockEnd	uint256

calculateBalance

Calculates a new balance based on a previous balance and a pair of interest indices This is defined as: The user's last balance checkpoint is multiplied by the currentSupplyIndex value and divided by the user's checkpoint index value

function calculateBalance(uint256 startingBalance, uint256 interestIndexStart, uint256 interestIndexEnd) internal pure
returns(enum ErrorReporter.Error, uint256)

Returns

Return value is expressed in 1e18 scale

Arguments

Name	Type	Description
startingBalance	uint256
interestIndexStart	uint256
interestIndexEnd	uint256

getPriceForAssetAmount

Gets the price for the amount specified of the given asset.

function getPriceForAssetAmount(address asset, uint256 assetAmount) internal view
returns(enum ErrorReporter.Error, struct Exponential.Exp)

Returns

Return value is expressed in a magnified scale per token decimals

Arguments

Name	Type	Description
asset	address
assetAmount	uint256

getPriceForAssetAmountMulCollatRatio

Gets the price for the amount specified of the given asset multiplied by the current collateral ratio (i.e., assetAmountWei collateralRatio oraclePrice = totalValueInEth). We will group this as (oraclePrice * collateralRatio) * assetAmountWei

function getPriceForAssetAmountMulCollatRatio(address asset, uint256 assetAmount) internal view
returns(enum ErrorReporter.Error, struct Exponential.Exp)

Returns

Return value is expressed in a magnified scale per token decimals

Arguments

Name	Type	Description
asset	address
assetAmount	uint256

calculateBorrowAmountWithFee

Calculates the origination fee added to a given borrowAmount This is simply (1 + originationFee) * borrowAmount

function calculateBorrowAmountWithFee(uint256 borrowAmount) internal view
returns(enum ErrorReporter.Error, uint256)

Returns

Return value is expressed in 1e18 scale

Arguments

Name	Type	Description
borrowAmount	uint256

fetchAssetPrice

fetches the price of asset from the PriceOracle and converts it to Exp

function fetchAssetPrice(address asset) internal view
returns(enum ErrorReporter.Error, struct Exponential.Exp)

Returns

Return value is expressed in a magnified scale per token decimals

Arguments

Name	Type	Description
asset	address	asset whose price should be fetched

assetPrices

Reads scaled price of specified asset from the price oracle

function assetPrices(address asset) public view
returns(uint256)

Returns

0 on an error or missing price, the price scaled by 1e18 otherwise

Arguments

Name	Type	Description
asset	address	Asset whose price should be retrieved

getAssetAmountForValue

Gets the amount of the specified asset given the specified Eth value ethValue / oraclePrice = assetAmountWei If there's no oraclePrice, this returns (Error.DIVISION_BY_ZERO, 0)

function getAssetAmountForValue(address asset, struct Exponential.Exp ethValue) internal view
returns(enum ErrorReporter.Error, uint256)

Returns

Return value is expressed in a magnified scale per token decimals

Arguments

Name	Type	Description
asset	address
ethValue	struct Exponential.Exp

_adminFunctions

Admin Functions. The newPendingAdmin must call _acceptAdmin to finalize the transfer.

function _adminFunctions(address newPendingAdmin, address newOracle, bool requestedState, uint256 originationFeeMantissa, uint256 newCloseFactorMantissa) public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
newPendingAdmin	address	New pending admin
newOracle	address	New oracle address
requestedState	bool	value to assign to paused
originationFeeMantissa	uint256	rational collateral ratio, scaled by 1e18.
newCloseFactorMantissa	uint256

_acceptAdmin

Accepts transfer of admin rights. msg.sender must be pendingAdmin

function _acceptAdmin() public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description

getAccountLiquidity

returns the liquidity for given account. a positive result indicates ability to borrow, whereas a negative result indicates a shortfall which may be liquidated

function getAccountLiquidity(address account) public view
returns(int256)

Returns

signed integer in terms of eth-wei (negative indicates a shortfall)

Arguments

Name	Type	Description
account	address	the account to examine

getSupplyBalance

return supply balance with any accumulated interest for asset belonging to account

function getSupplyBalance(address account, address asset) public view
returns(uint256)

Returns

uint supply balance on success, throws on failed assertion otherwise

Arguments

Name	Type	Description
account	address	the account to examine
asset	address	the market asset whose supply balance belonging to account should be checked

getBorrowBalance

return borrow balance with any accumulated interest for asset belonging to account

function getBorrowBalance(address account, address asset) public view
returns(uint256)

Returns

uint borrow balance on success, throws on failed assertion otherwise

Arguments

Name	Type	Description
account	address	the account to examine
asset	address	the market asset whose borrow balance belonging to account should be checked

_supportMarket

Supports a given market (asset) for use

function _supportMarket(address asset, InterestRateModel interestRateModel) public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	Asset to support; MUST already have a non-zero price set
interestRateModel	InterestRateModel	InterestRateModel to use for the asset

_suspendMarket

Suspends a given supported market (asset) from use. Assets in this state do count for collateral, but users may only withdraw, payBorrow, and liquidate the asset. The liquidate function no longer checks collateralization.

function _suspendMarket(address asset) public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	Asset to suspend

_setRiskParameters

Sets the risk parameters: collateral ratio and liquidation discount

function _setRiskParameters(uint256 collateralRatioMantissa, uint256 liquidationDiscountMantissa) public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
collateralRatioMantissa	uint256	rational collateral ratio, scaled by 1e18. The de-scaled value must be >= 1.1
liquidationDiscountMantissa	uint256	rational liquidation discount, scaled by 1e18. The de-scaled value must be <= 0.1 and must be less than (descaled collateral ratio minus 1)

_setMarketInterestRateModel

Sets the interest rate model for a given market

function _setMarketInterestRateModel(address asset, InterestRateModel interestRateModel) public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	Asset to support
interestRateModel	InterestRateModel

_withdrawEquity

withdraws amount of asset from equity for asset, as long as amount <= equity. Equity = cash + borrows - supply

function _withdrawEquity(address asset, uint256 amount) public nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	asset whose equity should be withdrawn
amount	uint256	amount of equity to withdraw; must not exceed equity available

setWethAddress

Set WETH token contract address

function setWethAddress(address wethContractAddress) public nonpayable
returns(uint256)

Arguments

Name	Type	Description
wethContractAddress	address	Enter the WETH token address

supplyEther

Convert Ether supplied by user into WETH tokens and then supply corresponding WETH to user

function supplyEther(address user, uint256 etherAmount) internal nonpayable
returns(uint256)

Returns

errors if any

Arguments

Name	Type	Description
user	address	User account address
etherAmount	uint256	Amount of ether to be converted to WETH

revertEtherToUser

Revert Ether paid by user back to user's account in case transaction fails due to some other reason

function revertEtherToUser(address user, uint256 etherAmount) internal nonpayable

Arguments

Name	Type	Description
user	address	User account address
etherAmount	uint256	Amount of ether to be sent back to user

supply

supply amount of asset (which must be supported) to msg.sender in the protocol

function supply(address asset, uint256 amount) public payable nonReentrant 
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	The market asset to supply
amount	uint256	The amount to supply

withdrawEther

withdraw amount of ether from sender's account to sender's address

function withdrawEther(address user, uint256 etherAmount) internal nonpayable
returns(uint256)

Arguments

Name	Type	Description
user	address	User account address
etherAmount	uint256	Amount of ether to be converted to WETH

withdraw

withdraw amount of asset from sender's account to sender's address

function withdraw(address asset, uint256 requestedAmount) public nonpayable nonReentrant 
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	The market asset to withdraw
requestedAmount	uint256	The amount to withdraw (or -1 for max)

calculateAccountLiquidity

Gets the user's account liquidity and account shortfall balances. This includes any accumulated interest thus far but does NOT actually update anything in storage, it simply calculates the account liquidity and shortfall with liquidity being returned as the first Exp, ie (Error, accountLiquidity, accountShortfall).

function calculateAccountLiquidity(address userAddress) internal view
returns(enum ErrorReporter.Error, struct Exponential.Exp, struct Exponential.Exp)

Returns

Return values are expressed in 1e18 scale

Arguments

Name	Type	Description
userAddress	address

calculateAccountValuesInternal

Gets the ETH values of the user's accumulated supply and borrow balances, scaled by 10e18. This includes any accumulated interest thus far but does NOT actually update anything in storage

function calculateAccountValuesInternal(address userAddress) internal view
returns(enum ErrorReporter.Error, struct Exponential.Exp, struct Exponential.Exp)

Returns

(error code, sum ETH value of supplies scaled by 10e18, sum ETH value of borrows scaled by 10e18)

Arguments

Name	Type	Description
userAddress	address	account for which to sum values

calculateAccountValues

Gets the ETH values of the user's accumulated supply and borrow balances, scaled by 10e18. This includes any accumulated interest thus far but does NOT actually update anything in storage

function calculateAccountValues(address userAddress) public view
returns(uint256, uint256, uint256)

Returns

(uint 0=success; otherwise a failure (see ErrorReporter.sol for details), sum ETH value of supplies scaled by 10e18, sum ETH value of borrows scaled by 10e18)

Arguments

Name	Type	Description
userAddress	address	account for which to sum values

repayBorrow

Users repay borrowed assets from their own address to the protocol.

function repayBorrow(address asset, uint256 amount) public payable nonReentrant 
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	The market asset to repay
amount	uint256	The amount to repay (or -1 for max)

liquidateBorrow

users repay all or some of an underwater borrow and receive collateral

function liquidateBorrow(address targetAccount, address assetBorrow, address assetCollateral, uint256 requestedAmountClose) public payable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
targetAccount	address	The account whose borrow should be liquidated
assetBorrow	address	The market asset to repay
assetCollateral	address	The borrower's market asset to receive in exchange
requestedAmountClose	uint256	The amount to repay (or -1 for max)

calculateDiscountedRepayToEvenAmount

This should ONLY be called if market is supported. It returns shortfall / [Oracle price for the borrow * (collateralRatio - liquidationDiscount - 1)] If the market isn't supported, we support liquidation of asset regardless of shortfall because we want borrows of the unsupported asset to be closed. Note that if collateralRatio = liquidationDiscount + 1, then the denominator will be zero and the function will fail with DIVISION_BY_ZERO.

function calculateDiscountedRepayToEvenAmount(address targetAccount, struct Exponential.Exp underwaterAssetPrice, address assetBorrow) internal view
returns(enum ErrorReporter.Error, uint256)

Returns

Return values are expressed in 1e18 scale

Arguments

Name	Type	Description
targetAccount	address
underwaterAssetPrice	struct Exponential.Exp
assetBorrow	address

calculateDiscountedBorrowDenominatedCollateral

discountedBorrowDenominatedCollateral = [supplyCurrent / (1 + liquidationDiscount)] * (Oracle price for the collateral / Oracle price for the borrow)

function calculateDiscountedBorrowDenominatedCollateral(struct Exponential.Exp underwaterAssetPrice, struct Exponential.Exp collateralPrice, uint256 supplyCurrent_TargetCollateralAsset) internal view
returns(enum ErrorReporter.Error, uint256)

Returns

Return values are expressed in 1e18 scale

Arguments

Name	Type	Description
underwaterAssetPrice	struct Exponential.Exp
collateralPrice	struct Exponential.Exp
supplyCurrent_TargetCollateralAsset	uint256

calculateAmountSeize

returns closeBorrowAmount_TargetUnderwaterAsset (1+liquidationDiscount) priceBorrow/priceCollateral

function calculateAmountSeize(struct Exponential.Exp underwaterAssetPrice, struct Exponential.Exp collateralPrice, uint256 closeBorrowAmount_TargetUnderwaterAsset) internal view
returns(enum ErrorReporter.Error, uint256)

Returns

Return values are expressed in 1e18 scale

Arguments

Name	Type	Description
underwaterAssetPrice	struct Exponential.Exp
collateralPrice	struct Exponential.Exp
closeBorrowAmount_TargetUnderwaterAsset	uint256

borrow

Users borrow assets from the protocol to their own address

function borrow(address asset, uint256 amount) public nonpayable nonReentrant 
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	The market asset to borrow
amount	uint256	The amount to borrow

supplyOriginationFeeAsAdmin

supply amount of asset (which must be supported) to admin in the protocol

function supplyOriginationFeeAsAdmin(address asset, address user, uint256 amount, uint256 newSupplyIndex) private nonpayable

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
asset	address	The market asset to supply
user	address
amount	uint256	The amount to supply
newSupplyIndex	uint256

setRewardControlAddress

Set the address of the Reward Control contract to be triggered to accrue ALK rewards for participants

function setRewardControlAddress(address _rewardControl) external nonpayable
returns(uint256)

Returns

uint 0=success, otherwise a failure (see ErrorReporter.sol for details)

Arguments

Name	Type	Description
_rewardControl	address	The address of the underlying reward control contract

refreshAlkSupplyIndex

Trigger the underlying Reward Control contract to accrue ALK supply rewards for the supplier on the specified market

function refreshAlkSupplyIndex(address market, address supplier, bool isVerified) internal nonpayable

Arguments

Name	Type	Description
market	address	The address of the market to accrue rewards
supplier	address	The address of the supplier to accrue rewards
isVerified	bool	Verified / Public protocol

refreshAlkBorrowIndex

Trigger the underlying Reward Control contract to accrue ALK borrow rewards for the borrower on the specified market

function refreshAlkBorrowIndex(address market, address borrower, bool isVerified) internal nonpayable

Arguments

Name	Type	Description
market	address	The address of the market to accrue rewards
borrower	address	The address of the borrower to accrue rewards
isVerified	bool	Verified / Public protocol

getMarketBalances

Get supply and borrows for a market

function getMarketBalances(address asset) public view
returns(uint256, uint256)

Returns

updated supply and borrows

Arguments

Name	Type	Description
asset	address	The market asset to find balances of

revertIfError

Function to revert in case of an internal exception

function revertIfError(enum ErrorReporter.Error err) internal pure

Arguments

Name	Type	Description
err	enum ErrorReporter.Error