Contract Name:
MasterchefV2
Contract Source Code:
File 1 of 1 : MasterchefV2
pragma solidity ^0.8.7;
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be _NOT_ENTERED
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
}
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
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");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
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");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
interface IBoringERC20 {
function mint(address to, uint256 amount) external;
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
);
/// @notice EIP 2612
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
interface IComplexRewarder {
function onBasedReward(
uint256 pid,
address user,
uint256 newLpAmount
) external;
function pendingTokens(uint256 pid, address user)
external
view
returns (uint256 pending);
function rewardToken() external view returns (IBoringERC20);
function poolRewardsPerSec(uint256 pid) external view returns (uint256);
}
// solhint-disable avoid-low-level-calls
library BoringERC20 {
bytes4 private constant SIG_SYMBOL = 0x95d89b41; // symbol()
bytes4 private constant SIG_NAME = 0x06fdde03; // name()
bytes4 private constant SIG_DECIMALS = 0x313ce567; // decimals()
bytes4 private constant SIG_TRANSFER = 0xa9059cbb; // transfer(address,uint256)
bytes4 private constant SIG_TRANSFER_FROM = 0x23b872dd; // transferFrom(address,address,uint256)
function returnDataToString(bytes memory data)
internal
pure
returns (string memory)
{
if (data.length >= 64) {
return abi.decode(data, (string));
} else if (data.length == 32) {
uint8 i = 0;
while (i < 32 && data[i] != 0) {
i++;
}
bytes memory bytesArray = new bytes(i);
for (i = 0; i < 32 && data[i] != 0; i++) {
bytesArray[i] = data[i];
}
return string(bytesArray);
} else {
return "???";
}
}
/// @notice Provides a safe ERC20.symbol version which returns '???' as fallback string.
/// @param token The address of the ERC-20 token contract.
/// @return (string) Token symbol.
function safeSymbol(IBoringERC20 token)
internal
view
returns (string memory)
{
(bool success, bytes memory data) = address(token).staticcall(
abi.encodeWithSelector(SIG_SYMBOL)
);
return success ? returnDataToString(data) : "???";
}
/// @notice Provides a safe ERC20.name version which returns '???' as fallback string.
/// @param token The address of the ERC-20 token contract.
/// @return (string) Token name.
function safeName(IBoringERC20 token)
internal
view
returns (string memory)
{
(bool success, bytes memory data) = address(token).staticcall(
abi.encodeWithSelector(SIG_NAME)
);
return success ? returnDataToString(data) : "???";
}
/// @notice Provides a safe ERC20.decimals version which returns '18' as fallback value.
/// @param token The address of the ERC-20 token contract.
/// @return (uint8) Token decimals.
function safeDecimals(IBoringERC20 token) internal view returns (uint8) {
(bool success, bytes memory data) = address(token).staticcall(
abi.encodeWithSelector(SIG_DECIMALS)
);
return success && data.length == 32 ? abi.decode(data, (uint8)) : 18;
}
/// @notice Provides a safe ERC20.transfer version for different ERC-20 implementations.
/// Reverts on a failed transfer.
/// @param token The address of the ERC-20 token.
/// @param to Transfer tokens to.
/// @param amount The token amount.
function safeTransfer(
IBoringERC20 token,
address to,
uint256 amount
) internal {
(bool success, bytes memory data) = address(token).call(
abi.encodeWithSelector(SIG_TRANSFER, to, amount)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"BoringERC20: Transfer failed"
);
}
/// @notice Provides a safe ERC20.transferFrom version for different ERC-20 implementations.
/// Reverts on a failed transfer.
/// @param token The address of the ERC-20 token.
/// @param from Transfer tokens from.
/// @param to Transfer tokens to.
/// @param amount The token amount.
function safeTransferFrom(
IBoringERC20 token,
address from,
address to,
uint256 amount
) internal {
(bool success, bytes memory data) = address(token).call(
abi.encodeWithSelector(SIG_TRANSFER_FROM, from, to, amount)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"BoringERC20: TransferFrom failed"
);
}
}
interface IUniswapV2Pair {
function initialize(address, address) external;
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
contract MasterchefV2 is Ownable, ReentrancyGuard {
using BoringERC20 for IBoringERC20;
// Info of each user.
struct UserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
uint256 rewardLockedUp; // Reward locked up.
uint256 nextHarvestUntil; // When can the user harvest again.
}
// Info of each pool.
struct PoolInfo {
IBoringERC20 lpToken; // Address of LP token contract.
uint256 allocPoint; // How many allocation points assigned to this pool. SWIFT to distribute per block.
uint256 lastRewardTimestamp; // Last block number that based distribution occurs.
uint256 accSwiftPerShare; // Accumulated Swift per share, times 1e18. See below.
uint16 depositFeeBP; // Deposit fee in basis points
uint256 harvestInterval; // Harvest interval in seconds
uint256 totalLp; // Total token in Pool
IComplexRewarder[] rewarders; // Array of rewarder contract for pools with incentives
}
IBoringERC20 public swift;
// Swift tokens created per second
uint256 public swiftPerSec;
// Max harvest interval: 14 days
uint256 public constant MAXIMUM_HARVEST_INTERVAL = 14 days;
// Maximum deposit fee rate: 5%
uint16 public constant MAXIMUM_DEPOSIT_FEE_RATE = 500;
// Info of each pool
PoolInfo[] public poolInfo;
// Info of each user that stakes LP tokens.
mapping(uint256 => mapping(address => UserInfo)) public userInfo;
// Total allocation points. Must be the sum of all allocation points in all pools.
uint256 public totalAllocPoint = 0;
// The timestamp when Swift mining starts.
uint256 public startTimestamp;
// Total locked up rewards
uint256 public totalLockedUpRewards;
// Total Swift in Swift Pools (can be multiple pools)
uint256 public totalSwiftInPools = 0;
// Team address.
address public teamAddress;
// Treasury address.
address public treasuryAddress;
// Investor address.
address public investorAddress;
// Percentage of pool rewards that goto the team.
uint256 public teamPercent;
// Percentage of pool rewards that goes to the treasury.
uint256 public treasuryPercent;
// Percentage of pool rewards that goes to the investor.
uint256 public investorPercent;
// The precision factor
uint256 private immutable ACC_TOKEN_PRECISION = 1e12;
modifier validatePoolByPid(uint256 _pid) {
require(_pid < poolInfo.length, "Pool does not exist");
_;
}
event Add(
uint256 indexed pid,
uint256 allocPoint,
IBoringERC20 indexed lpToken,
uint16 depositFeeBP,
uint256 harvestInterval,
IComplexRewarder[] indexed rewarders
);
event Set(
uint256 indexed pid,
uint256 allocPoint,
uint16 depositFeeBP,
uint256 harvestInterval,
IComplexRewarder[] indexed rewarders
);
event UpdatePool(
uint256 indexed pid,
uint256 lastRewardTimestamp,
uint256 lpSupply,
uint256 accSwiftPerShare
);
event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
event EmergencyWithdraw(
address indexed user,
uint256 indexed pid,
uint256 amount
);
event EmissionRateUpdated(
address indexed caller,
uint256 previousValue,
uint256 newValue
);
event RewardLockedUp(
address indexed user,
uint256 indexed pid,
uint256 amountLockedUp
);
event AllocPointsUpdated(
address indexed caller,
uint256 previousAmount,
uint256 newAmount
);
event SetTeamAddress(
address indexed oldAddress,
address indexed newAddress
);
event SetTreasuryAddress(
address indexed oldAddress,
address indexed newAddress
);
event SetInvestorAddress(
address indexed oldAddress,
address indexed newAddress
);
event SetTeamPercent(uint256 oldPercent, uint256 newPercent);
event SetTreasuryPercent(uint256 oldPercent, uint256 newPercent);
event SetInvestorPercent(uint256 oldPercent, uint256 newPercent);
constructor(
IBoringERC20 _swift,
uint256 _swiftPerSec,
address _teamAddress,
address _treasuryAddress,
address _investorAddress,
uint256 _teamPercent,
uint256 _treasuryPercent,
uint256 _investorPercent
) {
require(
_teamPercent <= 500,
"constructor: invalid team percent value"
);
require(
_treasuryPercent <= 500,
"constructor: invalid treasury percent value"
);
require(
_investorPercent <= 500,
"constructor: invalid investor percent value"
);
require(
_teamPercent + _treasuryPercent + _investorPercent <= 500,
"constructor: total percent over max"
);
//StartBlock always many years later from contract construct, will be set later in StartFarming function
startTimestamp = block.timestamp + (60 * 60 * 24 * 365);
swift = _swift;
swiftPerSec = _swiftPerSec;
teamAddress = _teamAddress;
treasuryAddress = _treasuryAddress;
investorAddress = _investorAddress;
teamPercent = _teamPercent;
treasuryPercent = _treasuryPercent;
investorPercent = _investorPercent;
}
// Set farming start, can call only once
function startFarming() public onlyOwner {
require(
block.timestamp < startTimestamp,
"start farming: farm started already"
);
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
PoolInfo storage pool = poolInfo[pid];
pool.lastRewardTimestamp = block.timestamp;
}
startTimestamp = block.timestamp;
}
function poolLength() external view returns (uint256) {
return poolInfo.length;
}
// Add a new lp to the pool. Can only be called by the owner.
// Can add multiple pool with same lp token without messing up rewards, because each pool's balance is tracked using its own totalLp
function add(
uint256 _allocPoint,
IBoringERC20 _lpToken,
uint16 _depositFeeBP,
uint256 _harvestInterval,
IComplexRewarder[] calldata _rewarders
) public onlyOwner {
require(_rewarders.length <= 10, "add: too many rewarders");
require(
_depositFeeBP <= MAXIMUM_DEPOSIT_FEE_RATE,
"add: deposit fee too high"
);
require(
_harvestInterval <= MAXIMUM_HARVEST_INTERVAL,
"add: invalid harvest interval"
);
require(
Address.isContract(address(_lpToken)),
"add: LP token must be a valid contract"
);
for (
uint256 rewarderId = 0;
rewarderId < _rewarders.length;
++rewarderId
) {
require(
Address.isContract(address(_rewarders[rewarderId])),
"add: rewarder must be contract"
);
}
_massUpdatePools();
uint256 lastRewardTimestamp = block.timestamp > startTimestamp
? block.timestamp
: startTimestamp;
totalAllocPoint += _allocPoint;
poolInfo.push(
PoolInfo({
lpToken: _lpToken,
allocPoint: _allocPoint,
lastRewardTimestamp: lastRewardTimestamp,
accSwiftPerShare: 0,
depositFeeBP: _depositFeeBP,
harvestInterval: _harvestInterval,
totalLp: 0,
rewarders: _rewarders
})
);
emit Add(
poolInfo.length - 1,
_allocPoint,
_lpToken,
_depositFeeBP,
_harvestInterval,
_rewarders
);
}
// Update the given pool's Swift allocation point and deposit fee. Can only be called by the owner.
function set(
uint256 _pid,
uint256 _allocPoint,
uint16 _depositFeeBP,
uint256 _harvestInterval,
IComplexRewarder[] calldata _rewarders
) public onlyOwner validatePoolByPid(_pid) {
require(_rewarders.length <= 10, "set: too many rewarders");
require(
_depositFeeBP <= MAXIMUM_DEPOSIT_FEE_RATE,
"set: deposit fee too high"
);
require(
_harvestInterval <= MAXIMUM_HARVEST_INTERVAL,
"set: invalid harvest interval"
);
for (
uint256 rewarderId = 0;
rewarderId < _rewarders.length;
++rewarderId
) {
require(
Address.isContract(address(_rewarders[rewarderId])),
"set: rewarder must be contract"
);
}
_massUpdatePools();
totalAllocPoint =
totalAllocPoint -
poolInfo[_pid].allocPoint +
_allocPoint;
poolInfo[_pid].allocPoint = _allocPoint;
poolInfo[_pid].depositFeeBP = _depositFeeBP;
poolInfo[_pid].harvestInterval = _harvestInterval;
poolInfo[_pid].rewarders = _rewarders;
emit Set(
_pid,
_allocPoint,
_depositFeeBP,
_harvestInterval,
_rewarders
);
}
// View function to see pending rewards on frontend.
function pendingTokens(uint256 _pid, address _user)
external
view
validatePoolByPid(_pid)
returns (
address[] memory addresses,
string[] memory symbols,
uint256[] memory decimals,
uint256[] memory amounts
)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 accSwiftPerShare = pool.accSwiftPerShare;
uint256 lpSupply = pool.totalLp;
if (block.timestamp > pool.lastRewardTimestamp && lpSupply != 0) {
uint256 multiplier = block.timestamp - pool.lastRewardTimestamp;
uint256 total = 1000;
uint256 lpPercent = total -
teamPercent -
treasuryPercent -
investorPercent;
uint256 swiftReward = (multiplier *
swiftPerSec *
pool.allocPoint *
lpPercent) /
totalAllocPoint /
total;
accSwiftPerShare += (
((swiftReward * ACC_TOKEN_PRECISION) / lpSupply)
);
}
uint256 pendingSwift = (((user.amount * accSwiftPerShare) /
ACC_TOKEN_PRECISION) - user.rewardDebt) + user.rewardLockedUp;
addresses = new address[](pool.rewarders.length + 1);
symbols = new string[](pool.rewarders.length + 1);
amounts = new uint256[](pool.rewarders.length + 1);
decimals = new uint256[](pool.rewarders.length + 1);
addresses[0] = address(swift);
symbols[0] = IBoringERC20(swift).safeSymbol();
decimals[0] = IBoringERC20(swift).safeDecimals();
amounts[0] = pendingSwift;
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
addresses[rewarderId + 1] = address(
pool.rewarders[rewarderId].rewardToken()
);
symbols[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeSymbol();
decimals[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeDecimals();
amounts[rewarderId + 1] = pool.rewarders[rewarderId].pendingTokens(
_pid,
_user
);
}
}
/// @notice View function to see pool rewards per sec
function poolRewardsPerSec(uint256 _pid)
external
view
validatePoolByPid(_pid)
returns (
address[] memory addresses,
string[] memory symbols,
uint256[] memory decimals,
uint256[] memory rewardsPerSec
)
{
PoolInfo storage pool = poolInfo[_pid];
addresses = new address[](pool.rewarders.length + 1);
symbols = new string[](pool.rewarders.length + 1);
decimals = new uint256[](pool.rewarders.length + 1);
rewardsPerSec = new uint256[](pool.rewarders.length + 1);
addresses[0] = address(swift);
symbols[0] = IBoringERC20(swift).safeSymbol();
decimals[0] = IBoringERC20(swift).safeDecimals();
uint256 total = 1000;
uint256 lpPercent = total -
teamPercent -
treasuryPercent -
investorPercent;
rewardsPerSec[0] =
(pool.allocPoint * swiftPerSec * lpPercent) /
totalAllocPoint /
total;
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
addresses[rewarderId + 1] = address(
pool.rewarders[rewarderId].rewardToken()
);
symbols[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeSymbol();
decimals[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeDecimals();
rewardsPerSec[rewarderId + 1] = pool
.rewarders[rewarderId]
.poolRewardsPerSec(_pid);
}
}
// View function to see rewarders for a pool
function poolRewarders(uint256 _pid)
external
view
validatePoolByPid(_pid)
returns (address[] memory rewarders)
{
PoolInfo storage pool = poolInfo[_pid];
rewarders = new address[](pool.rewarders.length);
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
rewarders[rewarderId] = address(pool.rewarders[rewarderId]);
}
}
// View function to see if user can harvest Swift.
function canHarvest(uint256 _pid, address _user)
public
view
validatePoolByPid(_pid)
returns (bool)
{
UserInfo storage user = userInfo[_pid][_user];
return
block.timestamp >= startTimestamp &&
block.timestamp >= user.nextHarvestUntil;
}
// Update reward vairables for all pools. Be careful of gas spending!
function massUpdatePools() external nonReentrant {
_massUpdatePools();
}
// Internal method for massUpdatePools
function _massUpdatePools() internal {
for (uint256 pid = 0; pid < poolInfo.length; ++pid) {
_updatePool(pid);
}
}
// Update reward variables of the given pool to be up-to-date.
function updatePool(uint256 _pid) external nonReentrant {
_updatePool(_pid);
}
// Internal method for _updatePool
function _updatePool(uint256 _pid) internal validatePoolByPid(_pid) {
PoolInfo storage pool = poolInfo[_pid];
if (block.timestamp <= pool.lastRewardTimestamp) {
return;
}
uint256 lpSupply = pool.totalLp;
if (lpSupply == 0 || pool.allocPoint == 0) {
pool.lastRewardTimestamp = block.timestamp;
return;
}
uint256 multiplier = block.timestamp - pool.lastRewardTimestamp;
uint256 swiftReward = ((multiplier * swiftPerSec) * pool.allocPoint) /
totalAllocPoint;
uint256 total = 1000;
uint256 lpPercent = total -
teamPercent -
treasuryPercent -
investorPercent;
swift.mint(teamAddress, (swiftReward * teamPercent) / total);
swift.mint(treasuryAddress, (swiftReward * treasuryPercent) / total);
swift.mint(investorAddress, (swiftReward * investorPercent) / total);
swift.mint(address(this), (swiftReward * lpPercent) / total);
pool.accSwiftPerShare +=
(swiftReward * ACC_TOKEN_PRECISION * lpPercent) /
pool.totalLp /
total;
pool.lastRewardTimestamp = block.timestamp;
emit UpdatePool(
_pid,
pool.lastRewardTimestamp,
lpSupply,
pool.accSwiftPerShare
);
}
function depositWithPermit(
uint256 pid,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public nonReentrant validatePoolByPid(pid) {
PoolInfo storage pool = poolInfo[pid];
IUniswapV2Pair pair = IUniswapV2Pair(address(pool.lpToken));
pair.permit(msg.sender, address(this), amount, deadline, v, r, s);
_deposit(pid, amount);
}
// Deposit tokens for Swift allocation.
function deposit(uint256 _pid, uint256 _amount) public nonReentrant {
_deposit(_pid, _amount);
}
// Deposit tokens for Swift allocation.
function _deposit(uint256 _pid, uint256 _amount)
internal
validatePoolByPid(_pid)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
_updatePool(_pid);
payOrLockupPendingSwift(_pid);
if (_amount > 0) {
uint256 beforeDeposit = pool.lpToken.balanceOf(address(this));
pool.lpToken.safeTransferFrom(msg.sender, address(this), _amount);
uint256 afterDeposit = pool.lpToken.balanceOf(address(this));
_amount = afterDeposit - beforeDeposit;
if (pool.depositFeeBP > 0) {
uint256 depositFee = (_amount * pool.depositFeeBP) / 10000;
pool.lpToken.safeTransfer(treasuryAddress, depositFee);
_amount = _amount - depositFee;
}
user.amount += _amount;
if (address(pool.lpToken) == address(swift)) {
totalSwiftInPools += _amount;
}
}
user.rewardDebt =
(user.amount * pool.accSwiftPerShare) /
ACC_TOKEN_PRECISION;
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
pool.rewarders[rewarderId].onBasedReward(
_pid,
msg.sender,
user.amount
);
}
if (_amount > 0) {
pool.totalLp += _amount;
}
emit Deposit(msg.sender, _pid, _amount);
}
//withdraw tokens
function withdraw(uint256 _pid, uint256 _amount)
public
nonReentrant
validatePoolByPid(_pid)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
//this will make sure that user can only withdraw from his pool
require(user.amount >= _amount, "withdraw: user amount not enough");
//cannot withdraw more than pool's balance
require(pool.totalLp >= _amount, "withdraw: pool total not enough");
_updatePool(_pid);
payOrLockupPendingSwift(_pid);
if (_amount > 0) {
user.amount -= _amount;
if (address(pool.lpToken) == address(swift)) {
totalSwiftInPools -= _amount;
}
pool.lpToken.safeTransfer(msg.sender, _amount);
}
user.rewardDebt =
(user.amount * pool.accSwiftPerShare) /
ACC_TOKEN_PRECISION;
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
pool.rewarders[rewarderId].onBasedReward(
_pid,
msg.sender,
user.amount
);
}
if (_amount > 0) {
pool.totalLp -= _amount;
}
emit Withdraw(msg.sender, _pid, _amount);
}
// Withdraw without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) public nonReentrant {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
uint256 amount = user.amount;
//Cannot withdraw more than pool's balance
require(
pool.totalLp >= amount,
"emergency withdraw: pool total not enough"
);
user.amount = 0;
user.rewardDebt = 0;
user.rewardLockedUp = 0;
user.nextHarvestUntil = 0;
pool.totalLp -= amount;
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
pool.rewarders[rewarderId].onBasedReward(_pid, msg.sender, 0);
}
if (address(pool.lpToken) == address(swift)) {
totalSwiftInPools -= amount;
}
pool.lpToken.safeTransfer(msg.sender, amount);
emit EmergencyWithdraw(msg.sender, _pid, amount);
}
// Pay or lockup pending Swift.
function payOrLockupPendingSwift(uint256 _pid) internal {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
if (user.nextHarvestUntil == 0 && block.timestamp >= startTimestamp) {
user.nextHarvestUntil = block.timestamp + pool.harvestInterval;
}
uint256 pending = ((user.amount * pool.accSwiftPerShare) /
ACC_TOKEN_PRECISION) - user.rewardDebt;
if (canHarvest(_pid, msg.sender)) {
if (pending > 0 || user.rewardLockedUp > 0) {
uint256 pendingRewards = pending + user.rewardLockedUp;
// reset lockup
totalLockedUpRewards -= user.rewardLockedUp;
user.rewardLockedUp = 0;
user.nextHarvestUntil = block.timestamp + pool.harvestInterval;
// send rewards
safeSwiftTransfer(msg.sender, pendingRewards);
}
} else if (pending > 0) {
totalLockedUpRewards += pending;
user.rewardLockedUp += pending;
emit RewardLockedUp(msg.sender, _pid, pending);
}
}
// Safe Swift transfer function, just in case if rounding error causes pool do not have enough Swift.
function safeSwiftTransfer(address _to, uint256 _amount) internal {
if (swift.balanceOf(address(this)) > totalSwiftInPools) {
//swiftBal = total Swift in BasedDistributor - total Swift in Swift pools, this will make sure that BasedDistributor never transfer rewards from deposited Swift pools
uint256 swiftBal = swift.balanceOf(address(this)) -
totalSwiftInPools;
if (_amount >= swiftBal) {
swift.safeTransfer(_to, swiftBal);
} else if (_amount > 0) {
swift.safeTransfer(_to, _amount);
}
}
}
function updateEmissionRate(uint256 _swiftPerSec) public onlyOwner {
_massUpdatePools();
emit EmissionRateUpdated(msg.sender, swiftPerSec, _swiftPerSec);
swiftPerSec = _swiftPerSec;
}
function updateAllocPoint(uint256 _pid, uint256 _allocPoint)
public
onlyOwner
{
_massUpdatePools();
emit AllocPointsUpdated(
msg.sender,
poolInfo[_pid].allocPoint,
_allocPoint
);
totalAllocPoint =
totalAllocPoint -
poolInfo[_pid].allocPoint +
_allocPoint;
poolInfo[_pid].allocPoint = _allocPoint;
}
function poolTotalLp(uint256 pid) external view returns (uint256) {
return poolInfo[pid].totalLp;
}
// Function to harvest many pools in a single transaction
function harvestMany(uint256[] calldata _pids) public nonReentrant {
require(_pids.length <= 30, "harvest many: too many pool ids");
for (uint256 index = 0; index < _pids.length; ++index) {
_deposit(_pids[index], 0);
}
}
// Update team address by the previous team address.
function setTeamAddress(address _teamAddress) public {
require(
msg.sender == teamAddress,
"set team address: only previous team address can call this method"
);
require(
_teamAddress != address(0),
"set team address: invalid new team address"
);
teamAddress = _teamAddress;
emit SetTeamAddress(msg.sender, _teamAddress);
}
function setTeamPercent(uint256 _newTeamPercent) public onlyOwner {
require(
_newTeamPercent <= 500,
"set team percent: invalid percent value"
);
require(
treasuryPercent + _newTeamPercent + investorPercent <= 500,
"set team percent: total percent over max"
);
emit SetTeamPercent(teamPercent, _newTeamPercent);
teamPercent = _newTeamPercent;
}
// Update treasury address by the previous treasury.
function setTreasuryAddress(address _treasuryAddress) public {
require(
msg.sender == treasuryAddress,
"set treasury address: only previous treasury address can call this method"
);
require(
_treasuryAddress != address(0),
"set treasury address: invalid new treasury address"
);
treasuryAddress = _treasuryAddress;
emit SetTreasuryAddress(msg.sender, _treasuryAddress);
}
function setTreasuryPercent(uint256 _newTreasuryPercent) public onlyOwner {
require(
_newTreasuryPercent <= 500,
"set treasury percent: invalid percent value"
);
require(
teamPercent + _newTreasuryPercent + investorPercent <= 500,
"set treasury percent: total percent over max"
);
emit SetTreasuryPercent(treasuryPercent, _newTreasuryPercent);
treasuryPercent = _newTreasuryPercent;
}
// Update the investor address by the previous investor.
function setInvestorAddress(address _investorAddress) public {
require(
msg.sender == investorAddress,
"set investor address: only previous investor can call this method"
);
require(
_investorAddress != address(0),
"set investor address: invalid new investor address"
);
investorAddress = _investorAddress;
emit SetInvestorAddress(msg.sender, _investorAddress);
}
function setInvestorPercent(uint256 _newInvestorPercent) public onlyOwner {
require(
_newInvestorPercent <= 500,
"set investor percent: invalid percent value"
);
require(
teamPercent + _newInvestorPercent + treasuryPercent <= 500,
"set investor percent: total percent over max"
);
emit SetInvestorPercent(investorPercent, _newInvestorPercent);
investorPercent = _newInvestorPercent;
}
}