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Update ERC20Votes.sol #3

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Update ERC20Votes.sol #3

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35 changes: 6 additions & 29 deletions hardhat/contracts/ERC20Votes.sol
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Original file line number Diff line number Diff line change
@@ -1,43 +1,20 @@
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol";

contract MyToken is ERC20, AccessControl, ERC20Permit, ERC20Votes {
contract LotteryToken is ERC20, ERC20Burnable, AccessControl {
bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");

constructor() ERC20("MyToken", "MTK") ERC20Permit("MyToken") {
constructor(string memory name, string memory symbol) ERC20(name, symbol) {
// constructor() ERC20("MyToken", "TKN") {
_grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
_grantRole(MINTER_ROLE, msg.sender);
}

function mint(address to, uint256 amount) public onlyRole(MINTER_ROLE) {
_mint(to, amount);
}

// The following functions are overrides required by Solidity.

function _afterTokenTransfer(address from, address to, uint256 amount)
internal
override(ERC20, ERC20Votes)
{
super._afterTokenTransfer(from, to, amount);
}

function _mint(address to, uint256 amount)
internal
override(ERC20, ERC20Votes)
{
super._mint(to, amount);
}

function _burn(address account, uint256 amount)
internal
override(ERC20, ERC20Votes)
{
super._burn(account, amount);
}
}