ComptrollerLens
ComptrollerLens Contract
The ComptrollerLens contract has functions to get the number of tokens that can be seized through liquidation, hypothetical account liquidity and shortfall of an account.
Solidity API
struct AccountLiquidityLocalVars {
uint256 sumCollateral;
uint256 sumBorrowPlusEffects;
uint256 vTokenBalance;
uint256 borrowBalance;
uint256 exchangeRateMantissa;
uint256 oraclePriceMantissa;
struct ExponentialNoError.Exp weightedFactor;
struct ExponentialNoError.Exp exchangeRate;
struct ExponentialNoError.Exp oraclePrice;
struct ExponentialNoError.Exp tokensToDenom;
}liquidateCalculateSeizeTokens
Computes the number of collateral tokens to be seized in a liquidation event
function liquidateCalculateSeizeTokens(address comptroller, address vTokenBorrowed, address vTokenCollateral, uint256 actualRepayAmount) external view returns (uint256, uint256)Parameters
comptroller
address
Address of comptroller
vTokenBorrowed
address
Address of the borrowed vToken
vTokenCollateral
address
Address of collateral for the borrow
actualRepayAmount
uint256
Repayment amount i.e amount to be repaid of total borrowed amount
Return Values
[0]
uint256
A tuple of error code, and tokens to seize
[1]
uint256
liquidateCalculateSeizeTokens
Computes the number of collateral tokens to be seized in a liquidation event
function liquidateCalculateSeizeTokens(address borrower, address comptroller, address vTokenBorrowed, address vTokenCollateral, uint256 actualRepayAmount) external view returns (uint256, uint256)Parameters
borrower
address
Address of borrower whose collateral is being seized
comptroller
address
Address of comptroller
vTokenBorrowed
address
Address of the borrowed vToken
vTokenCollateral
address
Address of collateral for the borrow
actualRepayAmount
uint256
Repayment amount i.e amount to be repaid of total borrowed amount
Return Values
[0]
uint256
A tuple of error code, and tokens to seize
[1]
uint256
liquidateVAICalculateSeizeTokens
Computes the number of VAI tokens to be seized in a liquidation event
function liquidateVAICalculateSeizeTokens(address comptroller, address vTokenCollateral, uint256 actualRepayAmount) external view returns (uint256, uint256)Parameters
comptroller
address
Address of comptroller
vTokenCollateral
address
Address of collateral for vToken
actualRepayAmount
uint256
Repayment amount i.e amount to be repaid of the total borrowed amount
Return Values
[0]
uint256
A tuple of error code, and tokens to seize
[1]
uint256
getHypotheticalAccountLiquidity
Computes the hypothetical liquidity and shortfall of an account given a hypothetical borrow A snapshot of the account is taken and the total borrow amount of the account is calculated
function getHypotheticalAccountLiquidity(address comptroller, address account, contract VToken vTokenModify, uint256 redeemTokens, uint256 borrowAmount, enum WeightFunction weightingStrategy) external view returns (uint256, uint256, uint256)Parameters
comptroller
address
Address of comptroller
account
address
Address of the borrowed vToken
vTokenModify
contract VToken
Address of collateral for vToken
redeemTokens
uint256
Number of vTokens being redeemed
borrowAmount
uint256
Amount borrowed
weightingStrategy
enum WeightFunction
The weighting strategy to use: - WeightFunction.USE_COLLATERAL_FACTOR to use collateral factor - WeightFunction.USE_LIQUIDATION_THRESHOLD to use liquidation threshold
Return Values
[0]
uint256
Returns a tuple of error code, liquidity, and shortfall
[1]
uint256
[2]
uint256
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