88 lines
2.4 KiB
Solidity
88 lines
2.4 KiB
Solidity
// SPDX-License-Identifier: MIT
|
||
pragma solidity ^0.8.0;
|
||
|
||
import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
|
||
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
|
||
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
|
||
import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
|
||
|
||
/**
|
||
* @title USDY Token
|
||
* @notice 统一计价代币
|
||
* @dev 只有授权的Vault可以铸造和销毁，UUPS可升级合约
|
||
*/
|
||
contract USDY is Initializable, ERC20Upgradeable, OwnableUpgradeable, UUPSUpgradeable {
|
||
|
||
error Forbidden();
|
||
error InvalidVault();
|
||
|
||
mapping(address => bool) public vaults;
|
||
|
||
event VaultAdded(address indexed vault);
|
||
event VaultRemoved(address indexed vault);
|
||
|
||
modifier onlyVault() {
|
||
if (!vaults[msg.sender]) revert Forbidden();
|
||
_;
|
||
}
|
||
|
||
/**
|
||
* @notice 初始化合约
|
||
*/
|
||
function initialize() external initializer {
|
||
__ERC20_init("YT USD", "USDY");
|
||
__Ownable_init(msg.sender);
|
||
__UUPSUpgradeable_init();
|
||
}
|
||
|
||
/**
|
||
* @notice 授权升级（仅owner可调用）
|
||
* @param newImplementation 新实现合约地址
|
||
*/
|
||
function _authorizeUpgrade(address newImplementation) internal override onlyOwner {}
|
||
|
||
/**
|
||
* @notice 添加授权的Vault地址
|
||
* @param _vault Vault合约地址
|
||
*/
|
||
function addVault(address _vault) external onlyOwner {
|
||
if (_vault == address(0)) revert InvalidVault();
|
||
vaults[_vault] = true;
|
||
emit VaultAdded(_vault);
|
||
}
|
||
|
||
/**
|
||
* @notice 移除授权的Vault地址
|
||
* @param _vault Vault合约地址
|
||
*/
|
||
function removeVault(address _vault) external onlyOwner {
|
||
vaults[_vault] = false;
|
||
emit VaultRemoved(_vault);
|
||
}
|
||
|
||
/**
|
||
* @notice 铸造USDY代币
|
||
* @param _account 接收地址
|
||
* @param _amount 铸造数量
|
||
*/
|
||
function mint(address _account, uint256 _amount) external onlyVault {
|
||
_mint(_account, _amount);
|
||
}
|
||
|
||
/**
|
||
* @notice 销毁USDY代币
|
||
* @param _account 销毁地址
|
||
* @param _amount 销毁数量
|
||
*/
|
||
function burn(address _account, uint256 _amount) external onlyVault {
|
||
_burn(_account, _amount);
|
||
}
|
||
|
||
/**
|
||
* @dev 预留存储空间，用于未来升级时添加新的状态变量
|
||
* 50个slot = 50 * 32 bytes = 1600 bytes
|
||
*/
|
||
uint256[50] private __gap;
|
||
}
|
||
|