Security That Powers the World’s Open Financial System

/// @inheritdoc IPoolManager function donate(PoolKey memory key, uint256 amount0, uint256 amount1, bytes calldata hookData) external override onlyWhenUnlocked returns (BalanceDelta delta) { Pool.State storage pool = _getPool(key.toId()); pool.checkPoolInitialized(); key.hooks.beforeDonate(key, amount0, amount1, hookData); delta = pool.donate(amount0, amount1); _accountPoolBalanceDelta(key, delta, msg.sender); key.hooks.afterDonate(key, amount0, amount1, hookData); } /// @inheritdoc IPoolManager function sync(Currency currency) public returns (uint256 balance) { balance = currency.balanceOfSelf(); currency.setReserves(balance); } /// @inheritdoc IPoolManager function take(Currency currency, address to, uint256 amount) external override onlyWhenUnlocked { unchecked { // negation must be safe as amount is not negative _accountDelta(currency, -(amount.toInt128()), msg.sender); currency.transfer(to, amount); } } /// @inheritdoc IPoolManager function settle(Currency currency) external payable override onlyWhenUnlocked returns (uint256 paid) { if (currency.isNative()) { paid = msg.value;Critical 01 : L281-290 } else { if (msg.value > 0) NonZeroNativeValue.selector.revertWith(); uint256 reservesBefore = currency.getReserves(); uint256 reservesNow = sync(currency); paid = reservesNow - reservesBefore; } _accountDelta(currency, paid.toInt128(), msg.sender); }