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Fixed event for the avg stable rate

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This commit is contained in:
emilio 2020-10-27 10:36:02 +01:00
parent 31a76ef047
commit aba38a800f
2 changed files with 20 additions and 7 deletions
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19
contracts/tokenization/StableDebtToken.sol
View File

@ -128,7 +128,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
_totalSupplyTimestamp = _timestamps[user] = uint40(block.timestamp);
//calculates the updated average stable rate
_avgStableRate = vars
vars.currentAvgStableRate = _avgStableRate = vars
.currentAvgStableRate
.rayMul(vars.previousSupply.wadToRay())
.add(rate.rayMul(vars.amountInRay))
@ -139,7 +139,15 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
// transfer event to track balances
emit Transfer(address(0), user, amount);
emit Mint(user, amount, previousBalance, currentBalance, balanceIncrease, vars.newStableRate);
emit Mint(
user,
amount,
previousBalance,
currentBalance,
balanceIncrease,
vars.newStableRate,
vars.currentAvgStableRate
);
}
/**
@ -155,17 +163,18 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
) = _calculateBalanceIncrease(user);
uint256 previousSupply = totalSupply();
uint256 newStableRate = 0;
//since the total supply and each single user debt accrue separately,
//there might be accumulation errors so that the last borrower repaying
//might actually try to repay more than the available debt supply.
//in this case we simply set the total supply and the avg stable rate to 0
if (previousSupply <= amount) {
_avgStableRate = 0;
newStableRate = _avgStableRate = 0;
_totalSupply = 0;
} else {
uint256 nextSupply = _totalSupply = previousSupply.sub(amount);
_avgStableRate = _avgStableRate
newStableRate = _avgStableRate = _avgStableRate
.rayMul(previousSupply.wadToRay())
.sub(_usersData[user].rayMul(amount.wadToRay()))
.rayDiv(nextSupply.wadToRay());
@ -190,7 +199,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
// transfer event to track balances
emit Transfer(user, address(0), amount);
emit Burn(user, amount, previousBalance, currentBalance, balanceIncrease);
emit Burn(user, amount, previousBalance, currentBalance, balanceIncrease, newStableRate);
}
/**

8
contracts/tokenization/interfaces/IStableDebtToken.sol
View File

@ -21,6 +21,7 @@ interface IStableDebtToken {
* @param currentBalance the current balance of the user
* @param balanceIncrease the debt increase since the last update
* @param newRate the rate of the debt after the minting
* @param avgStableRate the new average stable rate after the minting
**/
event Mint(
address indexed user,
@ -28,7 +29,8 @@ interface IStableDebtToken {
uint256 previousBalance,
uint256 currentBalance,
uint256 balanceIncrease,
uint256 newRate
uint256 newRate,
uint256 avgStableRate
);
/**
@ -38,13 +40,15 @@ interface IStableDebtToken {
* @param previousBalance the previous balance of the user
* @param currentBalance the current balance of the user
* @param balanceIncrease the debt increase since the last update
* @param avgStableRate the new average stable rate after the minting
**/
event Burn(
address indexed user,
uint256 amount,
uint256 previousBalance,
uint256 currentBalance,
uint256 balanceIncrease
uint256 balanceIncrease,
uint256 avgStableRate
);
/**