编译器
0.6.12+commit.27d51765
文件 1 的 10:BoringBatchable.sol
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import "./libraries/BoringERC20.sol";
contract BaseBoringBatchable {
function _getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
if (_returnData.length < 68) return "Transaction reverted silently";
assembly {
_returnData := add(_returnData, 0x04)
}
return abi.decode(_returnData, (string));
}
function batch(bytes[] calldata calls, bool revertOnFail) external payable returns(bool[] memory successes, bytes[] memory results) {
successes = new bool[](calls.length);
results = new bytes[](calls.length);
for (uint256 i = 0; i < calls.length; i++) {
(bool success, bytes memory result) = address(this).delegatecall(calls[i]);
require(success || !revertOnFail, _getRevertMsg(result));
successes[i] = success;
results[i] = result;
}
}
}
contract BoringBatchable is BaseBoringBatchable {
function permitToken(IERC20 token, address from, address to, uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
token.permit(from, to, amount, deadline, v, r, s);
}
}
文件 2 的 10:BoringERC20.sol
pragma solidity 0.6.12;
import "../interfaces/IERC20.sol";
library BoringERC20 {
function safeSymbol(IERC20 token) internal view returns(string memory) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(0x95d89b41));
return success && data.length > 0 ? abi.decode(data, (string)) : "???";
}
function safeName(IERC20 token) internal view returns(string memory) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(0x06fdde03));
return success && data.length > 0 ? abi.decode(data, (string)) : "???";
}
function safeDecimals(IERC20 token) internal view returns (uint8) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(0x313ce567));
return success && data.length == 32 ? abi.decode(data, (uint8)) : 18;
}
function safeTransfer(IERC20 token, address to, uint256 amount) internal {
(bool success, bytes memory data) = address(token).call(abi.encodeWithSelector(0xa9059cbb, to, amount));
require(success && (data.length == 0 || abi.decode(data, (bool))), "BoringERC20: Transfer failed");
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 amount) internal {
(bool success, bytes memory data) = address(token).call(abi.encodeWithSelector(0x23b872dd, from, to, amount));
require(success && (data.length == 0 || abi.decode(data, (bool))), "BoringERC20: TransferFrom failed");
}
}
文件 3 的 10:BoringMath.sol
pragma solidity 0.6.12;
library BoringMath {
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {require((c = a + b) >= b, "BoringMath: Add Overflow");}
function sub(uint256 a, uint256 b) internal pure returns (uint256 c) {require((c = a - b) <= a, "BoringMath: Underflow");}
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {require(b == 0 || (c = a * b)/b == a, "BoringMath: Mul Overflow");}
function to128(uint256 a) internal pure returns (uint128 c) {
require(a <= uint128(-1), "BoringMath: uint128 Overflow");
c = uint128(a);
}
function to64(uint256 a) internal pure returns (uint64 c) {
require(a <= uint64(-1), "BoringMath: uint64 Overflow");
c = uint64(a);
}
function to32(uint256 a) internal pure returns (uint32 c) {
require(a <= uint32(-1), "BoringMath: uint32 Overflow");
c = uint32(a);
}
}
library BoringMath128 {
function add(uint128 a, uint128 b) internal pure returns (uint128 c) {require((c = a + b) >= b, "BoringMath: Add Overflow");}
function sub(uint128 a, uint128 b) internal pure returns (uint128 c) {require((c = a - b) <= a, "BoringMath: Underflow");}
}
library BoringMath64 {
function add(uint64 a, uint64 b) internal pure returns (uint64 c) {require((c = a + b) >= b, "BoringMath: Add Overflow");}
function sub(uint64 a, uint64 b) internal pure returns (uint64 c) {require((c = a - b) <= a, "BoringMath: Underflow");}
}
library BoringMath32 {
function add(uint32 a, uint32 b) internal pure returns (uint32 c) {require((c = a + b) >= b, "BoringMath: Add Overflow");}
function sub(uint32 a, uint32 b) internal pure returns (uint32 c) {require((c = a - b) <= a, "BoringMath: Underflow");}
}
文件 4 的 10:Context.sol
pragma solidity >=0.6.0 <0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
文件 5 的 10:IERC20.sol
pragma solidity 0.6.12;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, 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);
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
}
文件 6 的 10:IRewarder.sol
pragma solidity 0.6.12;
interface IRewarder {
function onStakingReward(uint256 pid, address user, uint256 rewardAmount) external;
function pendingTokens(uint256 pid, address user, uint256 rewardAmount) external returns (address[] memory, uint256[] memory);
}
文件 7 的 10:IRewardsSchedule.sol
pragma solidity 0.6.12;
interface IRewardsSchedule {
event EarlyEndBlockSet(uint256 earlyEndBlock);
function startBlock() external view returns (uint256);
function endBlock() external view returns (uint256);
function getRewardsForBlockRange(uint256 from, uint256 to) external view returns (uint256);
function setEarlyEndBlock(uint256 earlyEndBlock) external;
}
文件 8 的 10:MultiTokenStaking.sol
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import "@boringcrypto/boring-solidity/contracts/libraries/BoringMath.sol";
import "@boringcrypto/boring-solidity/contracts/BoringBatchable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./libraries/SignedSafeMath.sol";
import "./interfaces/IRewarder.sol";
import "./interfaces/IRewardsSchedule.sol";
contract MultiTokenStaking is Ownable, BoringBatchable {
using BoringMath for uint256;
using BoringMath128 for uint128;
using BoringERC20 for IERC20;
using SignedSafeMath for int256;
uint256 private constant ACC_REWARDS_PRECISION = 1e12;
IERC20 public immutable rewardsToken;
IRewardsSchedule public immutable rewardsSchedule;
struct UserInfo {
uint256 amount;
int256 rewardDebt;
}
struct PoolInfo {
uint128 accRewardsPerShare;
uint64 lastRewardBlock;
uint64 allocPoint;
}
event Deposit(address indexed user, uint256 indexed pid, uint256 amount, address indexed to);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount, address indexed to);
event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount, address indexed to);
event Harvest(address indexed user, uint256 indexed pid, uint256 amount);
event LogPoolAddition(uint256 indexed pid, uint256 allocPoint, IERC20 indexed lpToken, IRewarder indexed rewarder);
event LogSetPool(uint256 indexed pid, uint256 allocPoint, IRewarder indexed rewarder, bool overwrite);
event LogUpdatePool(uint256 indexed pid, uint64 lastRewardBlock, uint256 lpSupply, uint256 accRewardsPerShare);
event RewardsAdded(uint256 amount);
event PointsAllocatorSet(address pointsAllocator);
mapping(address => bool) public stakingPoolExists;
PoolInfo[] public poolInfo;
mapping(uint256 => IERC20) public lpToken;
mapping(uint256 => IRewarder) public rewarder;
mapping(uint256 => mapping(address => UserInfo)) public userInfo;
uint256 public totalAllocPoint = 0;
address public pointsAllocator;
uint256 public totalRewardsReceived;
function poolLength() external view returns (uint256) {
return poolInfo.length;
}
modifier onlyPointsAllocatorOrOwner {
require(
msg.sender == pointsAllocator || msg.sender == owner(),
"MultiTokenStaking: not authorized to allocate points"
);
_;
}
constructor(address _rewardsToken, address _rewardsSchedule) public {
rewardsToken = IERC20(_rewardsToken);
rewardsSchedule = IRewardsSchedule(_rewardsSchedule);
}
function setPointsAllocator(address _pointsAllocator) external onlyOwner {
pointsAllocator = _pointsAllocator;
emit PointsAllocatorSet(_pointsAllocator);
}
function addRewards(uint256 amount) external onlyPointsAllocatorOrOwner {
rewardsToken.safeTransferFrom(msg.sender, address(this), amount);
totalRewardsReceived = totalRewardsReceived.add(amount);
emit RewardsAdded(amount);
}
function setEarlyEndBlock(uint256 earlyEndBlock) external onlyOwner {
uint256 totalRewards = rewardsSchedule.getRewardsForBlockRange(
rewardsSchedule.startBlock(),
earlyEndBlock
);
uint256 undistributedAmount = totalRewardsReceived.sub(totalRewards);
rewardsSchedule.setEarlyEndBlock(earlyEndBlock);
rewardsToken.safeTransfer(owner(), undistributedAmount);
}
function add(uint256 _allocPoint, IERC20 _lpToken, IRewarder _rewarder) public onlyPointsAllocatorOrOwner {
require(address(_lpToken) != address(rewardsToken), "MultiTokenStaking: Can not add rewards token.");
require(!stakingPoolExists[address(_lpToken)], "MultiTokenStaking: Staking pool already exists.");
uint256 pid = poolInfo.length;
totalAllocPoint = totalAllocPoint.add(_allocPoint);
lpToken[pid] = _lpToken;
if (address(_rewarder) != address(0)) {
rewarder[pid] = _rewarder;
}
poolInfo.push(PoolInfo({
allocPoint: _allocPoint.to64(),
lastRewardBlock: block.number.to64(),
accRewardsPerShare: 0
}));
stakingPoolExists[address(_lpToken)] = true;
emit LogPoolAddition(pid, _allocPoint, _lpToken, _rewarder);
}
function set(uint256 _pid, uint256 _allocPoint, IRewarder _rewarder, bool _overwrite) public onlyPointsAllocatorOrOwner {
totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
poolInfo[_pid].allocPoint = _allocPoint.to64();
if (_overwrite) {
rewarder[_pid] = _rewarder;
}
emit LogSetPool(_pid, _allocPoint, _overwrite ? _rewarder : rewarder[_pid], _overwrite);
}
function massUpdatePools(uint256[] calldata pids) external {
uint256 len = pids.length;
for (uint256 i = 0; i < len; ++i) {
updatePool(pids[i]);
}
}
function updatePool(uint256 _pid) public returns (PoolInfo memory pool) {
pool = poolInfo[_pid];
if (block.number > pool.lastRewardBlock) {
uint256 lpSupply = lpToken[_pid].balanceOf(address(this));
if (lpSupply > 0) {
uint256 rewardsTotal = rewardsSchedule.getRewardsForBlockRange(pool.lastRewardBlock, block.number);
uint256 poolReward = rewardsTotal.mul(pool.allocPoint) / totalAllocPoint;
pool.accRewardsPerShare = pool.accRewardsPerShare.add((poolReward.mul(ACC_REWARDS_PRECISION) / lpSupply).to128());
}
pool.lastRewardBlock = block.number.to64();
poolInfo[_pid] = pool;
emit LogUpdatePool(_pid, pool.lastRewardBlock, lpSupply, pool.accRewardsPerShare);
}
}
function pendingRewards(uint256 _pid, address _user) external view returns (uint256 pending) {
PoolInfo memory pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 accRewardsPerShare = pool.accRewardsPerShare;
uint256 lpSupply = lpToken[_pid].balanceOf(address(this));
if (block.number > pool.lastRewardBlock && lpSupply != 0) {
uint256 rewardsTotal = rewardsSchedule.getRewardsForBlockRange(pool.lastRewardBlock, block.number);
uint256 poolReward = rewardsTotal.mul(pool.allocPoint) / totalAllocPoint;
accRewardsPerShare = accRewardsPerShare.add(poolReward.mul(ACC_REWARDS_PRECISION) / lpSupply);
}
pending = int256(user.amount.mul(accRewardsPerShare) / ACC_REWARDS_PRECISION).sub(user.rewardDebt).toUInt256();
}
function deposit(uint256 _pid, uint256 _amount, address _to) public {
PoolInfo memory pool = updatePool(_pid);
UserInfo storage user = userInfo[_pid][_to];
user.amount = user.amount.add(_amount);
user.rewardDebt = user.rewardDebt.add(int256(_amount.mul(pool.accRewardsPerShare) / ACC_REWARDS_PRECISION));
lpToken[_pid].safeTransferFrom(msg.sender, address(this), _amount);
emit Deposit(msg.sender, _pid, _amount, _to);
}
function withdraw(uint256 _pid, uint256 _amount, address _to) public {
PoolInfo memory pool = updatePool(_pid);
UserInfo storage user = userInfo[_pid][msg.sender];
user.rewardDebt = user.rewardDebt.sub(int256(_amount.mul(pool.accRewardsPerShare) / ACC_REWARDS_PRECISION));
user.amount = user.amount.sub(_amount);
lpToken[_pid].safeTransfer(_to, _amount);
emit Withdraw(msg.sender, _pid, _amount, _to);
}
function harvest(uint256 _pid, address _to) public {
PoolInfo memory pool = updatePool(_pid);
UserInfo storage user = userInfo[_pid][msg.sender];
int256 accumulatedRewards = int256(user.amount.mul(pool.accRewardsPerShare) / ACC_REWARDS_PRECISION);
uint256 _pendingRewards = accumulatedRewards.sub(user.rewardDebt).toUInt256();
user.rewardDebt = accumulatedRewards;
rewardsToken.safeTransfer(_to, _pendingRewards);
address _rewarder = address(rewarder[_pid]);
if (_rewarder != address(0)) {
IRewarder(_rewarder).onStakingReward(_pid, msg.sender, _pendingRewards);
}
emit Harvest(msg.sender, _pid, _pendingRewards);
}
function withdrawAndHarvest(uint256 _pid, uint256 _amount, address _to) public {
PoolInfo memory pool = updatePool(_pid);
UserInfo storage user = userInfo[_pid][msg.sender];
int256 accumulatedRewards = int256(user.amount.mul(pool.accRewardsPerShare) / ACC_REWARDS_PRECISION);
uint256 _pendingRewards = accumulatedRewards.sub(user.rewardDebt).toUInt256();
user.rewardDebt = accumulatedRewards.sub(int256(_amount.mul(pool.accRewardsPerShare) / ACC_REWARDS_PRECISION));
user.amount = user.amount.sub(_amount);
rewardsToken.safeTransfer(_to, _pendingRewards);
lpToken[_pid].safeTransfer(_to, _amount);
address _rewarder = address(rewarder[_pid]);
if (_rewarder != address(0)) {
IRewarder(_rewarder).onStakingReward(_pid, msg.sender, _pendingRewards);
}
emit Harvest(msg.sender, _pid, _pendingRewards);
emit Withdraw(msg.sender, _pid, _amount, _to);
}
function emergencyWithdraw(uint256 _pid, address _to) public {
UserInfo storage user = userInfo[_pid][msg.sender];
uint256 amount = user.amount;
user.amount = 0;
user.rewardDebt = 0;
lpToken[_pid].safeTransfer(_to, amount);
emit EmergencyWithdraw(msg.sender, _pid, amount, _to);
}
}
文件 9 的 10:Ownable.sol
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
文件 10 的 10:SignedSafeMath.sol
pragma solidity 0.6.12;
library SignedSafeMath {
int256 constant private _INT256_MIN = -2**255;
function mul(int256 a, int256 b) internal pure returns (int256) {
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
function toUInt256(int256 a) internal pure returns (uint256) {
require(a >= 0, "Integer < 0");
return uint256(a);
}
}
{
"compilationTarget": {
"contracts/MultiTokenStaking.sol": "MultiTokenStaking"
},
"evmVersion": "istanbul",
"libraries": {},
"metadata": {
"bytecodeHash": "none",
"useLiteralContent": true
},
"optimizer": {
"enabled": true,
"runs": 800
},
"remappings": []
}
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