82 lines
2.4 KiB
Solidity
82 lines
2.4 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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import {ERC20} from "@openzeppelin-contracts/token/ERC20/ERC20.sol";
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import {ERC20Permit} from "@openzeppelin-contracts/token/ERC20/extensions/ERC20Permit.sol";
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import {ERC20Votes} from "@openzeppelin-contracts/token/ERC20/extensions/ERC20Votes.sol";
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import {Nonces} from "@openzeppelin-contracts/utils/Nonces.sol";
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import {ISTNK} from "./interfaces/ISTNK.sol";
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import {IGHST} from "./interfaces/IGHST.sol";
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contract Ghost is IGHST, ERC20, ERC20Permit, ERC20Votes {
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address public override staking;
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address public override stnk;
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address private _initializer;
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error GhostDelegationIsBuiltIn();
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constructor(address _stnk, string memory name, string memory symbol)
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ERC20(name, symbol)
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ERC20Permit(name)
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{
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stnk = _stnk;
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_initializer = msg.sender;
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}
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function initialize(address _staking) external {
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if (msg.sender != _initializer) revert NotStakingContract();
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staking = _staking;
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_initializer = address(0);
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}
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function mint(address _to, uint256 _amount) external override {
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if (msg.sender != staking) revert NotStakingContract();
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_mint(_to, _amount);
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}
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function burn(address _from, uint256 _amount) external override {
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if (msg.sender != staking) revert NotStakingContract();
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_burn(_from, _amount);
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}
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function delegate(address) public override pure {
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revert GhostDelegationIsBuiltIn();
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}
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function delegateBySig(
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address,
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uint256,
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uint256,
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uint8,
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bytes32,
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bytes32
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) public override pure {
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revert GhostDelegationIsBuiltIn();
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}
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function index() public view override returns (uint256) {
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return ISTNK(stnk).index();
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}
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function balanceFrom(uint256 _amount) public view override returns (uint256) {
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return _amount * index() / 1e18;
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}
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function balanceTo(uint256 _amount) public view override returns (uint256) {
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return _amount * 1e18 / index();
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}
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function nonces(address owner) public view override(ERC20Permit, Nonces) returns (uint256) {
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return super.nonces(owner);
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}
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function delegates(address account) public pure override returns (address) {
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return account;
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}
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function _update(address from, address to, uint256 amount) internal override(ERC20, ERC20Votes) {
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super._update(from, to, amount);
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}
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}
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