55 lines
1.6 KiB
Solidity
55 lines
1.6 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.0;
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import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
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import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
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import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
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import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
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/**
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* @title WUSD
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* @notice Wrapped USD - 简单的ERC20代币
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*/
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contract WUSD is Initializable, ERC20Upgradeable, UUPSUpgradeable, OwnableUpgradeable {
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/**
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* @notice 初始化合约
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* @param _name 代币名称
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* @param _symbol 代币符号
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*/
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function initialize(string memory _name, string memory _symbol) external initializer {
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__ERC20_init(_name, _symbol);
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__UUPSUpgradeable_init();
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__Ownable_init(msg.sender);
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}
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/**
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* @notice 授权升级（仅owner可调用）
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* @param newImplementation 新实现合约地址
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*/
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function _authorizeUpgrade(address newImplementation) internal override onlyOwner {}
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/**
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* @notice 铸造代币
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* @param _to 接收地址
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* @param _amount 铸造数量
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*/
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function mint(address _to, uint256 _amount) external onlyOwner {
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_mint(_to, _amount);
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}
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/**
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* @notice 销毁代币
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* @param _from 销毁地址
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* @param _amount 销毁数量
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*/
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function burn(address _from, uint256 _amount) external onlyOwner {
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_burn(_from, _amount);
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}
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/**
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* @dev 预留存储空间，用于未来升级时添加新的状态变量
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*/
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uint256[50] private __gap;
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}
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