编译器
0.8.10+commit.fc410830
文件 1 的 8:Address.sol
pragma solidity >=0.8.0 <0.9.0;
library Address {
function isContract(address account) internal view returns (bool) {
return account.code.length > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
文件 2 的 8:Context.sol
pragma solidity >=0.8.0 <0.9.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
文件 3 的 8:IERC20.sol
pragma solidity >=0.8.0 <0.9.0;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
文件 4 的 8:IERC721.sol
pragma solidity >=0.8.0 <0.9.0;
interface IERC721 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function setApprovalForAll(address operator, bool _approved) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
文件 5 的 8:IERC721Receiver.sol
pragma solidity >=0.8.0 <0.9.0;
interface IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
文件 6 的 8:Mutex.sol
pragma solidity >=0.8.0 <0.9.0;
contract Mutex {
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
modifier nonReentrant() {
require(_status != _ENTERED, "Mutex: reentrant call");
_status = _ENTERED;
_;
_status = _NOT_ENTERED;
}
}
文件 7 的 8:Ownable.sol
pragma solidity >=0.8.0 <0.9.0;
import "./Context.sol";
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() external onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) external onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
文件 8 的 8:staking.sol
pragma solidity >=0.8.0 <0.9.0;
import "./Ownable.sol";
import "./Mutex.sol";
import "./IERC20.sol";
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./Address.sol";
contract ParaStaking is Ownable, Mutex, IERC721Receiver {
using Address for address;
struct TokenInfo {
address collection;
uint256 tokenId;
}
struct StakeInfo {
uint256 id;
bool state;
uint256 amount;
uint256 startTime;
uint256 lockPeriod;
address staker;
}
struct RewardInfo {
uint256 amount;
uint256 updateTime;
}
struct UserInfo {
uint256 amount;
uint256 tokenCnt;
uint256 reward;
uint256[] stakes;
}
StakeInfo[] _stakes;
mapping(uint256 => TokenInfo[]) _tokens;
mapping(uint256 => RewardInfo) _rewards;
mapping(address => UserInfo) _users;
mapping(address => uint256) _multipliers;
IERC20 _token;
uint256 _totalStake;
uint256 _totalToken;
uint256 _baseReward = 5800000 * (10 ** 18);
uint256 constant _denominator = 100;
bool public isUnlocked;
address public rewardPool;
constructor(address token) {
_token = IERC20(token);
rewardPool = _msgSender();
}
event Stake(uint256 indexed id, address indexed account, uint256 amount, uint8 lockDays, TokenInfo[] tokens);
event Unstake(uint256 indexed id);
event Claim(uint256 indexed id, uint256 amount);
event Update(uint256 indexed id, uint256 amount, uint256 updateTime);
function isStakeholder(address account) external view returns (bool) {
return _users[account].stakes.length > 0;
}
function stakeOf(address account) external view returns (uint256) {
return _users[account].amount;
}
function numOfToken(address account) external view returns (uint256) {
return _users[account].tokenCnt;
}
function rewardOf(address account) external view returns (uint256) {
return _users[account].reward;
}
function totalStake() external view returns (uint256) {
return _totalStake;
}
function totalToken() external view returns (uint256) {
return _totalToken;
}
function multiplierOf(address collection) external view returns (uint256) {
return _multipliers[collection];
}
function baseReward() external view returns (uint256) {
return _baseReward;
}
function getReward(uint256 id) external view returns (uint256) {
uint dayCnt = (block.timestamp - _rewards[id].updateTime) / 1 days;
uint256 reward = _rewards[id].amount + dayCnt * _calculateReward(id);
return reward;
}
function stake(uint256 amount, uint8 lockDays, address[] memory collections, uint256[] memory tokenIds) external {
require(amount > 0, "Stake: deposit zero");
require(lockDays == 0 || lockDays == 30 || lockDays == 60 || lockDays == 90 || lockDays == 120, "Stake: invalid lock option");
require(collections.length == tokenIds.length, "Stake: array length mismatch");
require(tokenIds.length < 21, "Stake: token limit exceeds");
require(_token.transferFrom(_msgSender(), address(this), amount), "Stake: failed to transfer deposit");
StakeInfo memory newStake;
newStake.id = _stakes.length;
newStake.state = true;
newStake.amount = amount;
newStake.startTime = block.timestamp;
newStake.lockPeriod = lockDays * 1 days;
newStake.staker = _msgSender();
for(uint8 i; i < collections.length; i++) {
require(IERC721(collections[i]).isApprovedForAll(_msgSender(), address(this)), "Stake: unapproved collection");
IERC721(collections[i]).safeTransferFrom(_msgSender(), address(this), tokenIds[i]);
_tokens[newStake.id].push(TokenInfo(collections[i], tokenIds[i]));
}
_stakes.push(newStake);
_rewards[newStake.id].updateTime = block.timestamp;
_totalStake += amount;
_totalToken += collections.length;
_users[_msgSender()].amount += amount;
_users[_msgSender()].tokenCnt += collections.length;
_users[_msgSender()].stakes.push(newStake.id);
emit Stake(newStake.id, _msgSender(), amount, lockDays, _tokens[newStake.id]);
}
function unstake(uint256 id) external nonReentrant {
require(_stakes[id].state, "Unstake: invalid stake");
require(_msgSender() == _stakes[id].staker, "Unstake: caller is not staker");
if(!isUnlocked)
require(block.timestamp > _stakes[id].startTime + _stakes[id].lockPeriod, "Unstake: lock is not expired");
require(_token.transfer(_msgSender(), _stakes[id].amount), "Unstake: failed to transfer tokens");
if(block.timestamp > _rewards[id].updateTime + 1 days)
_updateReward(id);
if(_rewards[id].amount > 0) {
require(_token.transferFrom(rewardPool, _msgSender(), _rewards[id].amount), "Claim: failed to transfer tokens");
emit Claim(id, _rewards[id].amount);
_users[_msgSender()].reward -= _rewards[id].amount;
_rewards[id].amount = 0;
}
for(uint8 i; i < _tokens[id].length; i++) {
IERC721(_tokens[id][i].collection).safeTransferFrom(address(this), _msgSender(), _tokens[id][i].tokenId);
delete _tokens[id][i];
}
_users[_msgSender()].amount -= _stakes[id].amount;
_users[_msgSender()].tokenCnt -= _tokens[id].length;
_totalStake -= _stakes[id].amount;
_totalToken -= _tokens[id].length;
_stakes[id].state = false;
_stakes[id].amount = 0;
emit Unstake(id);
}
function updateReward(uint256 id) external {
require(_stakes[id].state, "Update: invalid stake");
require(block.timestamp > _rewards[id].updateTime + 1 days, "Update: early time for update");
_updateReward(id);
}
function claimReward(uint256 id) external nonReentrant {
require(_stakes[id].state, "Claim: invalid stake");
require(block.timestamp > _rewards[id].updateTime + 1 days, "Claim: to early for claim.");
_updateReward(id);
require(_rewards[id].amount > 0, "Claim: no reward");
require(_token.transferFrom(rewardPool, _msgSender(), _rewards[id].amount), "Claim: failed to transfer token");
emit Claim(id, _rewards[id].amount);
_users[_msgSender()].reward -= _rewards[id].amount;
_rewards[id].amount = 0;
}
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external override returns (bytes4) {
return this.onERC721Received.selector;
}
function _updateReward(uint256 id) internal {
uint dayCnt = (block.timestamp - _rewards[id].updateTime) / 1 days;
uint256 reward = dayCnt * _calculateReward(id);
_rewards[id].amount += reward;
_rewards[id].updateTime += dayCnt * 1 days;
_users[_msgSender()].reward += reward;
emit Update(id, reward, _rewards[id].updateTime);
}
function _calculateReward(uint256 id) internal view returns (uint256) {
uint lockMultiplier = (_stakes[id].lockPeriod / 30 days) * 25;
uint tokenMultiplier;
for(uint8 i; i < _tokens[id].length; i++) {
tokenMultiplier += _multipliers[_tokens[id][i].collection];
}
uint256 bonus = _stakes[id].amount * (lockMultiplier + tokenMultiplier) / _denominator;
return _baseReward * (_stakes[id].amount + bonus) / (_totalStake + bonus);
}
function setBaseReward(uint256 value) external onlyOwner {
_baseReward = value;
}
function setMultiplier(address collection, uint256 value) external onlyOwner {
require(collection.isContract(), "invalid address");
_multipliers[collection] = value;
}
function unlock(bool flag) external onlyOwner {
isUnlocked = flag;
}
function setRewardPool(address account) external onlyOwner {
rewardPool = account;
}
function updateTokenAddress(address tokenAddress) external onlyOwner {
_token = IERC20(tokenAddress);
}
function stakeIds(address stakeAddress) external returns (uint[] memory _stakeIds){
_users[stakeAddress].stakes = new uint[](_users[stakeAddress].stakes.length);
for(uint i=0;i<_users[stakeAddress].stakes.length;i++)
{
_stakeIds[i] = _users[stakeAddress].stakes[i];
}
}
}
{
"compilationTarget": {
"staking.sol": "ParaStaking"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
[{"inputs":[{"internalType":"address","name":"token","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint8","name":"lockDays","type":"uint8"},{"components":[{"internalType":"address","name":"collection","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"indexed":false,"internalType":"struct ParaStaking.TokenInfo[]","name":"tokens","type":"tuple[]"}],"name":"Stake","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"}],"name":"Unstake","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"updateTime","type":"uint256"}],"name":"Update","type":"event"},{"inputs":[],"name":"baseReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"claimReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"isStakeholder","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isUnlocked","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"collection","type":"address"}],"name":"multiplierOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"numOfToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"rewardOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"setBaseReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"collection","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"setMultiplier","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"setRewardPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint8","name":"lockDays","type":"uint8"},{"internalType":"address[]","name":"collections","type":"address[]"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"stakeAddress","type":"address"}],"name":"stakeIds","outputs":[{"internalType":"uint256[]","name":"_stakeIds","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"stakeOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalStake","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"flag","type":"bool"}],"name":"unlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"updateReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"}],"name":"updateTokenAddress","outputs":[],"stateMutability":"nonpayable","type":"function"}]