Merge branch 'fix/61' into 'master'

Resolve "Fix stable rate token events"

Closes #61

See merge request aave-tech/protocol-v2!69

contracts/tokenization/StableDebtToken.sol

@@ -131,7 +131,8 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
     _totalSupplyTimestamp = _timestamps[user] = uint40(block.timestamp);
 
     //calculates the updated average stable rate
-    _avgStableRate = vars.currentAvgStableRate
+    _avgStableRate = vars
+      .currentAvgStableRate
       .rayMul(vars.previousSupply.wadToRay())
       .add(rate.rayMul(vars.amountInRay))
       .rayDiv(vars.nextSupply.wadToRay());
@@ -141,14 +142,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
     // transfer event to track balances
     emit Transfer(address(0), user, amount);
 
-    emit MintDebt(
-      user,
-      amount,
-      previousBalance,
-      currentBalance,
-      balanceIncrease,
-      vars.newStableRate
-    );
+    emit Mint(user, amount, previousBalance, currentBalance, balanceIncrease, vars.newStableRate);
   }
 
   /**
@@ -163,7 +157,6 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
       uint256 balanceIncrease
     ) = _calculateBalanceIncrease(user);
 
-      
     uint256 previousSupply = totalSupply();
 
     //since the total supply and each single user debt accrue separately,
@@ -184,7 +177,6 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
     if (amount == currentBalance) {
       _usersData[user] = 0;
       _timestamps[user] = 0;
-
     } else {
       //solium-disable-next-line
       _timestamps[user] = uint40(block.timestamp);
@@ -201,7 +193,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
     // transfer event to track balances
     emit Transfer(user, address(0), amount);
 
-    emit BurnDebt(user, amount, previousBalance, currentBalance, balanceIncrease);
+    emit Burn(user, amount, previousBalance, currentBalance, balanceIncrease);
   }
 
   /**
@@ -238,7 +230,17 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
   /**
    * @dev returns the principal and total supply, the average borrow rate and the last supply update timestamp
    **/
-  function getSupplyData() public override view returns (uint256, uint256, uint256,uint40) {
+  function getSupplyData()
+    public
+    override
+    view
+    returns (
+      uint256,
+      uint256,
+      uint256,
+      uint40
+    )
+  {
     uint256 avgRate = _avgStableRate;
     return (super.totalSupply(), _calcTotalSupply(avgRate), avgRate, _totalSupplyTimestamp);
   }
@@ -261,7 +263,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
   /**
    * @dev returns the timestamp at which the total supply was updated
    **/
-  function getTotalSupplyLastUpdated() public override view returns(uint40) {
+  function getTotalSupplyLastUpdated() public override view returns (uint40) {
     return _totalSupplyTimestamp;
   }
 
@@ -274,13 +276,12 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
     return super.balanceOf(user);
   }
 
-
   /**
    * @dev calculates the total supply
    * @param avgRate the average rate at which calculate the total supply
    * @return The debt balance of the user since the last burn/mint action
    **/
-  function _calcTotalSupply(uint256 avgRate) internal view returns(uint256) {
+  function _calcTotalSupply(uint256 avgRate) internal view returns (uint256) {
     uint256 principalSupply = super.totalSupply();
 
     if (principalSupply == 0) {
@@ -301,8 +302,11 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
    * @param amount the amount being minted
    * @param oldTotalSupply the total supply before the minting event
    **/
-   function _mint(address account, uint256 amount, uint256 oldTotalSupply) internal {
-
+  function _mint(
+    address account,
+    uint256 amount,
+    uint256 oldTotalSupply
+  ) internal {
     uint256 oldAccountBalance = _balances[account];
     _balances[account] = oldAccountBalance.add(amount);
 
@@ -317,8 +321,11 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
    * @param amount the amount being burned
    * @param oldTotalSupply the total supply before the burning event
    **/
-  function _burn(address account, uint256 amount, uint256 oldTotalSupply) internal {
- 
+  function _burn(
+    address account,
+    uint256 amount,
+    uint256 oldTotalSupply
+  ) internal {
     uint256 oldAccountBalance = _balances[account];
     _balances[account] = oldAccountBalance.sub(amount, 'ERC20: burn amount exceeds balance');
 

contracts/tokenization/interfaces/IStableDebtToken.sol

@@ -22,8 +22,8 @@ interface IStableDebtToken {
    * @param balanceIncrease the debt increase since the last update
    * @param newRate the rate of the debt after the minting
    **/
-  event MintDebt(
-    address user,
+  event Mint(
+    address indexed user,
     uint256 amount,
     uint256 previousBalance,
     uint256 currentBalance,
@@ -39,8 +39,8 @@ interface IStableDebtToken {
    * @param currentBalance the current balance of the user
    * @param balanceIncrease the debt increase since the last update
    **/
-  event BurnDebt(
-    address user,
+  event Burn(
+    address indexed user,
     uint256 amount,
     uint256 previousBalance,
     uint256 currentBalance,
@@ -88,7 +88,15 @@ interface IStableDebtToken {
   /**
    * @dev returns the principal, the total supply and the average stable rate
    **/
-  function getSupplyData() external view returns (uint256, uint256, uint256, uint40);
+  function getSupplyData()
+    external
+    view
+    returns (
+      uint256,
+      uint256,
+      uint256,
+      uint40
+    );
 
   /**
    * @dev returns the timestamp of the last update of the total supply