Uniswap是一个去中心化的交易所,使用智能合约在以太坊网络上进行代币交换。以下是一个简化的Uniswap交易所逻辑代码示例,使用Solidity编写,以太坊网络和REST API实现代币交换。在这个示例中,我们将使用Custom ERC20 Token(自定义ERC20代币)作为交换媒介。
1. 首先,创建一个名为`exchange.sol`的文件,并添加以下代码:注意I80流程2857技术8624过程!它也是的概念,
```solidity
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/utils/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/access/OwnableContract.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20Interface.sol";
contract Exchange is ERC20Interface, Ownable, Counters {
using SafeMath for uint256;
using Counters for uint256;
address public exchangeAddress;
mapping(address => uint256) public balances;
constructor() ERC20("exchange") public {
exchangeAddress = msg.sender;
balances[exchangeAddress] = 1000000 * ERC20Interface.TOKENS_PER_SALE;
}
function exchange(uint256 _from, ui