aave-protocol-v2/contracts/interfaces/IUniswapExchange.sol

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// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.8;
interface IUniswapExchange {
event TokenPurchase(address indexed buyer, uint256 indexed eth_sold, uint256 indexed tokens_bought);
event EthPurchase(address indexed buyer, uint256 indexed tokens_sold, uint256 indexed eth_bought);
event AddLiquidity(address indexed provider, uint256 indexed eth_amount, uint256 indexed token_amount);
event RemoveLiquidity(address indexed provider, uint256 indexed eth_amount, uint256 indexed token_amount);
}