50 lines
1.8 KiB
Solidity
50 lines
1.8 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.19;
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import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
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import "@openzeppelin/contracts/access/AccessControl.sol";
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/**
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* @title CompliantWrappedToken
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* @notice ERC-20 wrapper for bridged compliant tokens (cWUSDT, cWUSDC, etc.) on public chains.
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* @dev Only MINTER_ROLE can mint (e.g. CCIP receiver/bridge); BURNER_ROLE can burn (bridge-back).
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* Admin can grant/revoke roles. Used for cW* representation of Chain 138 compliant tokens.
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*/
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contract CompliantWrappedToken is ERC20, AccessControl {
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bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
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bytes32 public constant BURNER_ROLE = keccak256("BURNER_ROLE");
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uint8 private immutable _decimalsStorage;
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constructor(
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string memory name_,
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string memory symbol_,
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uint8 decimals_,
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address admin_
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) ERC20(name_, symbol_) {
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_decimalsStorage = decimals_;
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_grantRole(DEFAULT_ADMIN_ROLE, admin_);
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_grantRole(MINTER_ROLE, admin_);
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_grantRole(BURNER_ROLE, admin_);
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}
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function decimals() public view override returns (uint8) {
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return _decimalsStorage;
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}
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/// @notice Mint to account (only MINTER_ROLE, e.g. bridge receiver).
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function mint(address to, uint256 amount) external onlyRole(MINTER_ROLE) {
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_mint(to, amount);
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}
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/// @notice Burn from account (only BURNER_ROLE, e.g. bridge for burn-on-exit).
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function burn(address from, uint256 amount) external onlyRole(BURNER_ROLE) {
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_burn(from, amount);
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}
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/// @notice Burn from account (only BURNER_ROLE). Enables TwoWayTokenBridgeL2 and other bridges that call burnFrom(user, amount) for outbound.
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function burnFrom(address from, uint256 amount) external onlyRole(BURNER_ROLE) {
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_burn(from, amount);
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}
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}
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