MintSwapCanonicalTokenFreezable (#268)

contracts/pegged-bridge/tokens/freezable/MintSwapCanonicalTokenFreezable.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+pragma solidity 0.8.17;
+
+import "./Freezable.sol";
+import "../MintSwapCanonicalToken.sol";
+
+/**
+ * @title Canonical token that supports multi-bridge minter and multi-token swap. Support freezable erc20 transfer
+ */
+contract MintSwapCanonicalTokenFreezable is MintSwapCanonicalToken, Freezable {
+    string private _name;
+    string private _symbol;
+
+    constructor(
+        string memory name_,
+        string memory symbol_,
+        uint8 decimals_
+    ) MintSwapCanonicalToken(name_, symbol_, decimals_) {}
+
+    // freezable related
+    function _beforeTokenTransfer(
+        address from,
+        address to,
+        uint256 amount
+    ) internal virtual override {
+        super._beforeTokenTransfer(from, to, amount);
+        require(!isFrozen(from), "ERC20Freezable: from account is frozen");
+        require(!isFrozen(to), "ERC20Freezable: to account is frozen");
+    }
+
+    function freeze(address _account) public onlyOwner {
+        freezes[_account] = true;
+        emit Frozen(_account);
+    }
+
+    function unfreeze(address _account) public onlyOwner {
+        freezes[_account] = false;
+        emit Unfrozen(_account);
+    }
+}

deploy/pegged-bridge/tokens/freezable/001_mint_swap_canonical_token_freezable.ts

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+import * as dotenv from 'dotenv';
+import { DeployFunction } from 'hardhat-deploy/types';
+import { HardhatRuntimeEnvironment } from 'hardhat/types';
+
+dotenv.config();
+
+const deployFunc: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
+  const { deployments, getNamedAccounts } = hre;
+  const { deploy } = deployments;
+  const { deployer } = await getNamedAccounts();
+
+  await deploy('MintSwapCanonicalTokenFreezable', {
+    from: deployer,
+    log: true,
+    args: [
+      process.env.MINT_SWAP_CANONICAL_TOKEN_NAME,
+      process.env.MINT_SWAP_CANONICAL_TOKEN_SYMBOL,
+      process.env.MINT_SWAP_CANONICAL_TOKEN_DECIMALS
+    ]
+  });
+};
+
+deployFunc.tags = ['MintSwapCanonicalTokenFreezable'];
+deployFunc.dependencies = [];
+export default deployFunc;