Add SimpleERC20 contract

celo-org · Mar 24, 2023 · bf780e1 · bf780e1
1 parent f50aa93
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diff --git a/packages/hardhat/contracts/SimpleERC20.sol b/packages/hardhat/contracts/SimpleERC20.sol
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.9;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Snapshot.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/security/Pausable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20FlashMint.sol";
+
+contract MyToken is ERC20, ERC20Burnable, ERC20Snapshot, Ownable, Pausable, ERC20Permit, ERC20Votes, ERC20FlashMint {
+    constructor() ERC20("MyToken", "MTK") ERC20Permit("MyToken") {}
+
+    function snapshot() public onlyOwner {
+        _snapshot();
+    }
+
+    function pause() public onlyOwner {
+        _pause();
+    }
+
+    function unpause() public onlyOwner {
+        _unpause();
+    }
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+
+    function _beforeTokenTransfer(address from, address to, uint256 amount)
+        internal
+        whenNotPaused
+        override(ERC20, ERC20Snapshot)
+    {
+        super._beforeTokenTransfer(from, 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);
+    }
+}
diff --git a/packages/truffle/contracts/.gitkeep b/packages/truffle/contracts/.gitkeep
diff --git a/packages/truffle/contracts/SimpleERC20.sol b/packages/truffle/contracts/SimpleERC20.sol
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.9;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Snapshot.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/security/Pausable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20FlashMint.sol";
+
+contract MyToken is ERC20, ERC20Burnable, ERC20Snapshot, Ownable, Pausable, ERC20Permit, ERC20Votes, ERC20FlashMint {
+    constructor() ERC20("MyToken", "MTK") ERC20Permit("MyToken") {}
+
+    function snapshot() public onlyOwner {
+        _snapshot();
+    }
+
+    function pause() public onlyOwner {
+        _pause();
+    }
+
+    function unpause() public onlyOwner {
+        _unpause();
+    }
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+
+    function _beforeTokenTransfer(address from, address to, uint256 amount)
+        internal
+        whenNotPaused
+        override(ERC20, ERC20Snapshot)
+    {
+        super._beforeTokenTransfer(from, 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);
+    }
+}