mirror of
https://github.com/Instadapp/aave-protocol-v2.git
synced 2024-07-29 21:47:30 +00:00
Added natspec comments to stable debt token, cleaned up stable debt token code
This commit is contained in:
emilio
parent
da6273a951
commit
7813e8cec0
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@ -186,14 +186,14 @@ contract TokenDistributor is ReentrancyGuard, VersionedInitializable {
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require(_success, "ERROR_ON_EXCHANGE");
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_amountToBurn = abi.decode(_result, (uint256));
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}
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internalBurn(_amountToBurn);
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_burn(_amountToBurn);
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}
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}
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}
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/// @notice Internal function to send _amount of tokenToBurn to the 0x0 address
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/// @param _amount The amount to burn
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function internalBurn(uint256 _amount) internal {
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function _burn(uint256 _amount) internal {
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require(IERC20(tokenToBurn).transfer(recipientBurn, _amount), "INTERNAL_BURN. Reverted transfer to recipientBurn address");
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emit Burn(_amount);
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}
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@ -211,8 +211,6 @@ contract LendingPoolLiquidationManager is ReentrancyGuard, VersionedInitializabl
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}
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}
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console.log("Balance before liquidation is %s", IERC20(principalReserve.stableDebtTokenAddress).balanceOf(_user));
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//TODO Burn debt tokens
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if(vars.userVariableDebt >= vars.actualAmountToLiquidate){
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IVariableDebtToken(principalReserve.variableDebtTokenAddress).burn(_user, vars.actualAmountToLiquidate);
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@ -222,8 +220,6 @@ contract LendingPoolLiquidationManager is ReentrancyGuard, VersionedInitializabl
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IStableDebtToken(principalReserve.stableDebtTokenAddress).burn(_user, vars.actualAmountToLiquidate.sub(vars.userVariableDebt));
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}
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console.log("Balance after liquidation is %s", IERC20(principalReserve.stableDebtTokenAddress).balanceOf(_user));
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vars.collateralAtoken = AToken(collateralReserve.aTokenAddress);
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//if liquidator reclaims the aToken, he receives the equivalent atoken amount
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@ -237,13 +233,10 @@ contract LendingPoolLiquidationManager is ReentrancyGuard, VersionedInitializabl
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//otherwise receives the underlying asset
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//burn the equivalent amount of atoken
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vars.collateralAtoken.burnOnLiquidation(_user, vars.maxCollateralToLiquidate);
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console.log("Burned %s collateral tokens, collateral %s",vars.maxCollateralToLiquidate, _collateral);
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IERC20(_collateral).universalTransfer(msg.sender, vars.maxCollateralToLiquidate);
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}
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console.log("Transferring principal, amount %s",vars.actualAmountToLiquidate);
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//transfers the principal currency to the pool
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IERC20(_reserve).universalTransferFromSenderToThis(vars.actualAmountToLiquidate, true);
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@ -238,8 +238,6 @@ library GenericLogic {
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uint256 liquidationThreshold
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) internal view returns (uint256) {
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console.log("Borrow balance ETH is %s", borrowBalanceETH);
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if (borrowBalanceETH == 0) return uint256(-1);
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return
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@ -38,11 +38,8 @@ library UniversalERC20 {
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}
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if (isETH(token)) {
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console.log("transfer of ETH, value %s", amount);
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console.log("Balance is %s", address(this).balance);
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(bool result, ) = payable(to).call{value: amount, gas: DEFAULT_TRANSFER_GAS}('');
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console.log("Transfer done, result %s", result);
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require(result, 'ETH_TRANSFER_FAILED');
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} else {
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@ -1,14 +1,24 @@
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pragma solidity ^0.6.0;
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import '@openzeppelin/contracts/GSN/Context.sol';
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import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
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import '@openzeppelin/contracts/math/SafeMath.sol';
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import '@openzeppelin/contracts/utils/Address.sol';
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import {Context} from '@openzeppelin/contracts/GSN/Context.sol';
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import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
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import {SafeMath} from '@openzeppelin/contracts/math/SafeMath.sol';
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import {Address} from '@openzeppelin/contracts/utils/Address.sol';
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import {DebtTokenBase} from './base/DebtTokenBase.sol';
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import {MathUtils} from '../libraries/MathUtils.sol';
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import {WadRayMath} from '../libraries/WadRayMath.sol';
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import {IStableDebtToken} from './interfaces/IStableDebtToken.sol';
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/**
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* @title contract StableDebtToken
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*
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* @notice defines the interface for the stable debt token
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*
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* @dev it does not inherit from IERC20 to save in code size
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*
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* @author Aave
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*
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**/
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contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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using SafeMath for uint256;
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using WadRayMath for uint256;
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@ -23,6 +33,15 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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mapping(address => UserData) usersData;
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/**
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* @dev emitted when new stable debt is minted
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* @param _user the address of the user
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* @param _amount the amount minted
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* @param _previousBalance the previous balance of the user
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* @param _currentBalance the current balance of the user
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* @param _balanceIncrease the debt increase since the last update
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* @param _newRate the rate of the debt after the minting
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**/
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event mintDebt(
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address _user,
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uint256 _amount,
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@ -31,6 +50,15 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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uint256 _balanceIncrease,
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uint256 _newRate
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);
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/**
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* @dev emitted when new stable debt is burned
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* @param _user the address of the user
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* @param _amount the amount minted
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* @param _previousBalance the previous balance of the user
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* @param _currentBalance the current balance of the user
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* @param _balanceIncrease the debt increase since the last update
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**/
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event burnDebt(
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address _user,
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uint256 _amount,
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@ -52,9 +80,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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return usersData[_user].currentRate;
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}
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/**
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* @dev See {IERC20-balanceOf}.
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*/
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function balanceOf(address account) public virtual override view returns (uint256) {
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if(balances[account] == 0) {
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return 0;
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@ -69,15 +95,6 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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return balances[account].wadToRay().rayMul(cumulatedInterest).rayToWad();
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}
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/** @dev Creates `amount` tokens and assigns them to `account`, increasing
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* the total supply.
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*
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* Emits a {Transfer} event with `from` set to the zero address.
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*
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* Requirements
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*
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* - `to` cannot be the zero address.
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*/
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struct MintLocalVars {
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uint256 newSupply;
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@ -85,45 +102,55 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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uint256 newStableRate;
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}
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/**
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* @dev mints debt token to the target user. The resulting rate is the weighted average
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* between the rate of the new debt and the rate of the previous debt
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* @param _user the address of the user
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* @param _amount the amount of debt tokens to mint
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* @param _rate the rate of the debt being minted.
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**/
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function mint(
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address account,
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uint256 amount,
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uint256 rate
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address _user,
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uint256 _amount,
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uint256 _rate
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) public override onlyLendingPool {
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MintLocalVars memory vars;
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//cumulates the user debt
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(
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uint256 previousBalance,
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uint256 currentBalance,
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uint256 balanceIncrease
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) = internalCumulateBalance(account);
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) = _cumulateBalance(_user);
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vars.newSupply = totalSupply.add(_amount);
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vars.newSupply = totalSupply.add(amount);
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vars.amountInRay = _amount.wadToRay();
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vars.amountInRay = amount.wadToRay();
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vars.newStableRate = usersData[account]
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//calculates the new stable rate for the user
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vars.newStableRate = usersData[_user]
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.currentRate
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.rayMul(currentBalance.wadToRay())
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.add(vars.amountInRay.rayMul(rate))
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.rayDiv(currentBalance.add(amount).wadToRay());
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.add(vars.amountInRay.rayMul(_rate))
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.rayDiv(currentBalance.add(_amount).wadToRay());
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usersData[account].currentRate = vars.newStableRate;
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usersData[_user].currentRate = vars.newStableRate;
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usersData[account].lastUpdateTimestamp = uint40(block.timestamp);
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//solium-disable-next-line
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usersData[_user].lastUpdateTimestamp = uint40(block.timestamp);
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//calculates the updated average stable rate
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avgStableRate = avgStableRate
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.rayMul(totalSupply.wadToRay())
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.add(rate.rayMul(vars.amountInRay))
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.add(_rate.rayMul(vars.amountInRay))
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.rayDiv(vars.newSupply.wadToRay());
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internalMint(account, amount);
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_mint(_user, _amount);
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emit mintDebt(
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account,
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amount,
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_user,
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_amount,
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previousBalance,
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currentBalance,
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balanceIncrease,
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@ -132,22 +159,16 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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}
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/**
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* @dev Destroys `amount` tokens from `account`, reducing the
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* total supply.
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*
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* Emits a {Transfer} event with `to` set to the zero address.
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*
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* Requirements
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*
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* - `account` cannot be the zero address.
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* - `account` must have at least `amount` tokens.
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*/
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function burn(address _account, uint256 _amount) public override onlyLendingPool {
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* @dev burns debt of the target user.
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* @param _user the address of the user
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* @param _amount the amount of debt tokens to mint
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**/
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function burn(address _user, uint256 _amount) public override onlyLendingPool {
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(
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uint256 previousBalance,
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uint256 currentBalance,
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uint256 balanceIncrease
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) = internalCumulateBalance(_account);
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) = _cumulateBalance(_user);
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uint256 newSupply = totalSupply.sub(_amount);
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@ -158,18 +179,18 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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} else {
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avgStableRate = avgStableRate
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.rayMul(totalSupply.wadToRay())
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.sub(usersData[_account].currentRate.rayMul(amountInRay))
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.sub(usersData[_user].currentRate.rayMul(amountInRay))
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.rayDiv(newSupply.wadToRay());
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}
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if(_amount == currentBalance){
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usersData[_account].currentRate = 0;
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usersData[_account].lastUpdateTimestamp = 0;
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usersData[_user].currentRate = 0;
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usersData[_user].lastUpdateTimestamp = 0;
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}
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internalBurn(_account, _amount);
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_burn(_user, _amount);
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emit burnDebt(_account, _amount, previousBalance, currentBalance, balanceIncrease);
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emit burnDebt(_user, _amount, previousBalance, currentBalance, balanceIncrease);
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}
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/**
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@ -177,7 +198,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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* @param _user the address of the user for which the interest is being accumulated
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* @return the previous principal balance, the new principal balance, the balance increase
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**/
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function internalCumulateBalance(address _user)
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function _cumulateBalance(address _user)
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internal
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returns (
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uint256,
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@ -194,7 +215,7 @@ contract StableDebtToken is IStableDebtToken, DebtTokenBase {
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//calculate the accrued interest since the last accumulation
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uint256 balanceIncrease = balanceOf(_user).sub(previousPrincipalBalance);
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//mints an amount of tokens equivalent to the amount accumulated
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internalMint(_user, balanceIncrease);
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_mint(_user, balanceIncrease);
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return (
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previousPrincipalBalance,
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@ -69,7 +69,7 @@ contract VariableDebtToken is DebtTokenBase, IVariableDebtToken {
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uint256 balanceIncrease
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) = internalCumulateBalance(account);
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internalMint(account, amount);
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_mint(account, amount);
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userIndexes[account] = pool.getReserveNormalizedVariableDebt(underlyingAssetAddress);
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@ -94,7 +94,7 @@ contract VariableDebtToken is DebtTokenBase, IVariableDebtToken {
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uint256 balanceIncrease
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) = internalCumulateBalance(account);
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internalBurn(account, amount);
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_burn(account, amount);
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//if user repaid everything
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if (currentBalance == amount) {
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@ -130,7 +130,7 @@ contract VariableDebtToken is DebtTokenBase, IVariableDebtToken {
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uint256 balanceIncrease = balanceOf(_user).sub(previousPrincipalBalance);
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//mints an amount of tokens equivalent to the amount accumulated
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internalMint(_user, balanceIncrease);
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_mint(_user, balanceIncrease);
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return (
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previousPrincipalBalance,
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@ -152,12 +152,12 @@ abstract contract DebtTokenBase is IERC20 {
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revert('ALLOWANCE_NOT_SUPPORTED');
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}
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function internalMint(address account, uint256 amount) internal {
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function _mint(address account, uint256 amount) internal {
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totalSupply = totalSupply.add(amount);
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balances[account] = balances[account].add(amount);
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}
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function internalBurn(address account, uint256 amount) internal {
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function _burn(address account, uint256 amount) internal {
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totalSupply = totalSupply.sub(amount);
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balances[account] = balances[account].sub(amount);
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}
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@ -1,19 +1,54 @@
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pragma solidity ^0.6.0;
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/**
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* @title interface IStableDebtToken
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*
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* @notice defines the interface for the stable debt token
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*
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* @dev it does not inherit from IERC20 to save in code size
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*
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* @author Aave
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*
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**/
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interface IStableDebtToken {
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/**
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* @dev mints debt token to the target user. The resulting rate is the weighted average
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* between the rate of the new debt and the rate of the previous debt
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* @param _user the address of the user
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* @param _amount the amount of debt tokens to mint
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* @param _rate the rate of the debt being minted.
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**/
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function mint(
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address account,
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uint256 amount,
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uint256 rate
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address _user,
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uint256 _amount,
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uint256 _rate
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) external virtual;
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function burn(address _account, uint256 _amount) external virtual;
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/**
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* @dev burns debt of the target user.
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* @param _user the address of the user
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* @param _amount the amount of debt tokens to mint
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**/
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function burn(address _user, uint256 _amount) external virtual;
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/**
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* @dev returns the average rate of all the stable rate loans.
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* @return the average stable rate
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**/
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function getAverageStableRate() external virtual view returns(uint256);
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/**
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* @dev returns the stable rate of the user debt
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* @return the stable rate of the user
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**/
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function getUserStableRate(address _user) external virtual view returns(uint256);
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/**
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* @dev returns the timestamp of the last update of the user
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* @return the timestamp
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**/
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function getUserLastUpdated(address _user) external virtual view returns (uint40);
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}
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@ -70,7 +70,7 @@
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},
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"PriceOracle": {
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"buidlerevm": {
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"address": "0x8731324a6C09a1745bD15009Dc8FcceF11c05F4a",
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"address": "0x85bdE212E66e2BAE510E44Ed59116c1eC712795b",
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"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
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},
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"localhost": {
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@ -80,7 +80,7 @@
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},
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"MockAggregator": {
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"buidlerevm": {
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"address": "0x474d9b0D5F1Bb1602711F9346743a7a7478d6f52",
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"address": "0xAF6BA11790D1942625C0c2dA07da19AB63845cfF",
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"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
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},
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"localhost": {
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@ -90,7 +90,7 @@
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},
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"ChainlinkProxyPriceProvider": {
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"buidlerevm": {
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"address": "0xf91aC1098F3b154671Ce83290114aaE45ac0225f",
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"address": "0xD83D2773a7873ae2b5f8Fb92097e20a8C64F691E",
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"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
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},
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"localhost": {
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@ -100,7 +100,7 @@
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},
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"LendingRateOracle": {
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"buidlerevm": {
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"address": "0xf4830d6b1D70C8595d3BD8A63f9ed9F636DB9ef2",
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"address": "0xf91aC1098F3b154671Ce83290114aaE45ac0225f",
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"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
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},
|
||||
"localhost": {
|
||||
|
|
@ -110,7 +110,7 @@
|
|||
},
|
||||
"DefaultReserveInterestRateStrategy": {
|
||||
"buidlerevm": {
|
||||
"address": "0xC8Df507578fEfb60aA626ABFDDB20B48ee439ad1",
|
||||
"address": "0x2dD8146Ad2138ac61F93E549f8F917927B47E28a",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
|
|
@ -146,7 +146,7 @@
|
|||
},
|
||||
"TokenDistributor": {
|
||||
"buidlerevm": {
|
||||
"address": "0x24E420B42971372F060a93129846761F354Bc50B"
|
||||
"address": "0xC5f7aC6895DcB76877E71db756433fB0E0478FEB"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xb840b4fe440b5E26e1840cd2D6320FAda1C0ca5d"
|
||||
|
|
@ -154,7 +154,7 @@
|
|||
},
|
||||
"InitializableAdminUpgradeabilityProxy": {
|
||||
"buidlerevm": {
|
||||
"address": "0x24E420B42971372F060a93129846761F354Bc50B",
|
||||
"address": "0xC5f7aC6895DcB76877E71db756433fB0E0478FEB",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
|
|
@ -164,7 +164,7 @@
|
|||
},
|
||||
"MockFlashLoanReceiver": {
|
||||
"buidlerevm": {
|
||||
"address": "0x1a432D97211e8b2CD53DF262c8Da0EfeBa6b6b3D"
|
||||
"address": "0x24E420B42971372F060a93129846761F354Bc50B"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x5c98c9202b73d27A618662d34A6805c34AB041B8"
|
||||
|
|
@ -172,7 +172,7 @@
|
|||
},
|
||||
"WalletBalanceProvider": {
|
||||
"buidlerevm": {
|
||||
"address": "0xC91A0D5B404a66d0d66daF32DA23BB0c434F7F6b",
|
||||
"address": "0x285671fF5C8172dE63cF5eA264B2e827aDBC6740",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
|
|
@ -412,7 +412,7 @@
|
|||
},
|
||||
"AaveProtocolTestHelpers": {
|
||||
"buidlerevm": {
|
||||
"address": "0x5c98c9202b73d27A618662d34A6805c34AB041B8"
|
||||
"address": "0xb840b4fe440b5E26e1840cd2D6320FAda1C0ca5d"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xBE7fFcC01164C890e59D298FD755FcBE6B7941a9"
|
||||
|
|
@ -420,7 +420,7 @@
|
|||
},
|
||||
"StableDebtToken": {
|
||||
"buidlerevm": {
|
||||
"address": "0xD325d114a728C2114Bd33Ad47152f790f2a29c5c",
|
||||
"address": "0xBdFE372Bb5a0db801A1a17796EC5cfF2F30A714C",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
|
|
@ -430,7 +430,7 @@
|
|||
},
|
||||
"VariableDebtToken": {
|
||||
"buidlerevm": {
|
||||
"address": "0x910b6a78b413e47401f20aA2350d264b55ae0189",
|
||||
"address": "0xD325d114a728C2114Bd33Ad47152f790f2a29c5c",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
|
|
|
|||
|
|
@ -449,15 +449,6 @@ export const calcExpectedReserveDataAfterRepay = (
|
|||
userDataBeforeAction.principalStableDebt
|
||||
);
|
||||
|
||||
console.log(
|
||||
'Debt accrued: ',
|
||||
debtAccrued.toFixed(),
|
||||
' Total liquidity:',
|
||||
reserveDataBeforeAction.totalLiquidity.toFixed(),
|
||||
' total borrow stable: ',
|
||||
reserveDataBeforeAction.totalBorrowsStable.toFixed()
|
||||
);
|
||||
|
||||
expectedReserveData.totalLiquidity = reserveDataBeforeAction.totalLiquidity.plus(debtAccrued);
|
||||
|
||||
expectedReserveData.totalBorrowsStable = reserveDataBeforeAction.totalBorrowsStable
|
||||
|
|
|
|||
|
|
@ -178,8 +178,6 @@ makeSuite('LendingPool liquidation - liquidator receiving the underlying asset',
|
|||
txTimestamp.plus(2)
|
||||
);
|
||||
|
||||
console.log("debt: ", stableDebtBeforeTx.toFixed(), userReserveDataBefore.currentStableDebt.toFixed(), userReserveDataAfter.currentStableDebt.toString())
|
||||
|
||||
expect(userReserveDataAfter.currentStableDebt.toString()).to.be.bignumber.almostEqual(
|
||||
new BigNumber(stableDebtBeforeTx).minus(amountToLiquidate).toFixed(0),
|
||||
'Invalid user debt after liquidation'
|
||||
|
|
@ -190,8 +188,6 @@ makeSuite('LendingPool liquidation - liquidator receiving the underlying asset',
|
|||
'Invalid principal available liquidity'
|
||||
);
|
||||
|
||||
console.log('eth liquidity: ', daiReserveDataAfter.availableLiquidity.toString());
|
||||
|
||||
expect(ethReserveDataAfter.availableLiquidity.toString()).to.be.bignumber.almostEqual(
|
||||
new BigNumber(ethReserveDataBefore.availableLiquidity)
|
||||
.minus(expectedCollateralLiquidated)
|
||||
|
|
@ -303,14 +299,6 @@ makeSuite('LendingPool liquidation - liquidator receiving the underlying asset',
|
|||
'Invalid health factor'
|
||||
);
|
||||
|
||||
console.log(
|
||||
'Debt: ',
|
||||
userReserveDataAfter.currentStableDebt.toString(),
|
||||
new BigNumber(userReserveDataBefore.currentStableDebt.toString())
|
||||
.minus(amountToLiquidate)
|
||||
.toFixed(0)
|
||||
);
|
||||
|
||||
expect(userReserveDataAfter.currentStableDebt.toString()).to.be.bignumber.almostEqual(
|
||||
new BigNumber(userReserveDataBefore.currentStableDebt.toString())
|
||||
.minus(amountToLiquidate)
|
||||
|
|
@ -323,14 +311,6 @@ makeSuite('LendingPool liquidation - liquidator receiving the underlying asset',
|
|||
'Invalid principal available liquidity'
|
||||
);
|
||||
|
||||
console.log(
|
||||
'Debt: ',
|
||||
usdcReserveDataAfter.availableLiquidity.toString(),
|
||||
new BigNumber(usdcReserveDataBefore.availableLiquidity.toString())
|
||||
.plus(amountToLiquidate)
|
||||
.toFixed(0)
|
||||
);
|
||||
|
||||
expect(ethReserveDataAfter.availableLiquidity.toString()).to.be.bignumber.almostEqual(
|
||||
new BigNumber(ethReserveDataBefore.availableLiquidity)
|
||||
.minus(expectedCollateralLiquidated)
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ BigNumber.config({DECIMAL_PLACES: 0, ROUNDING_MODE: BigNumber.ROUND_DOWN});
|
|||
|
||||
const scenarioFolder = './test/helpers/scenarios/';
|
||||
|
||||
const selectedScenarios: string[] = ['borrow-repay-variable.json'];
|
||||
const selectedScenarios: string[] = [];
|
||||
|
||||
fs.readdirSync(scenarioFolder).forEach((file) => {
|
||||
if (selectedScenarios.length > 0 && !selectedScenarios.includes(file)) return;
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user